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362 files changed, 44869 insertions, 12 deletions
diff --git a/.gitignore b/.gitignore index 661df346..3bcf7b3f 100644 --- a/.gitignore +++ b/.gitignore @@ -1,12 +1,4 @@ -# Files I don't care to see in git-status/commit -/cgit -cgit.conf -CGIT-CFLAGS -VERSION -cgitrc.5 -cgitrc.5.fo -cgitrc.5.html -cgitrc.5.pdf -cgitrc.5.xml -*.o -*.d +/build +/clone +/git +/trash diff --git a/bin/.gitignore b/bin/.gitignore new file mode 100644 index 00000000..df322fd4 --- /dev/null +++ b/bin/.gitignore @@ -0,0 +1,36 @@ +*.html +*.o +beef +bibsort +bit +bri +c +config.mk +dtch +ever +fbatt +fbclock +glitch +hi +hnel +modem +nudge +open +order +pbcopy +pbd +pbpaste +pngo +psf2png +psfed +ptee +relay +scheme +scheme.h +shotty +tags +title +ttpre +up +when +xx diff --git a/bin/LICENSE b/bin/LICENSE new file mode 100644 index 00000000..dba13ed2 --- /dev/null +++ b/bin/LICENSE @@ -0,0 +1,661 @@ + GNU AFFERO GENERAL PUBLIC LICENSE + Version 3, 19 November 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU Affero General Public License is a free, copyleft license for +software and other kinds of works, specifically designed to ensure +cooperation with the community in the case of network server software. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + <one line to give the program's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + +Also add information on how to contact you by electronic and paper mail. + + If your software can interact with users remotely through a computer +network, you should also make sure that it provides a way for users to +get its source. For example, if your program is a web application, its +interface could display a "Source" link that leads users to an archive +of the code. There are many ways you could offer source, and different +solutions will be better for different programs; see section 13 for the +specific requirements. + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU AGPL, see +<http://www.gnu.org/licenses/>. diff --git a/bin/Makefile b/bin/Makefile new file mode 100644 index 00000000..5691b0fc --- /dev/null +++ b/bin/Makefile @@ -0,0 +1,153 @@ +PREFIX = ~/.local +MANDIR = ${PREFIX}/share/man + +LIBS_PREFIX = /usr/local +CFLAGS += -I${LIBS_PREFIX}/include +LDFLAGS += -L${LIBS_PREFIX}/lib + +CFLAGS += -Wall -Wextra -Wpedantic -Wno-gnu-case-range +LDLIBS.dtch = -lutil +LDLIBS.fbclock = -lz +LDLIBS.glitch = -lz +LDLIBS.hnel = -lutil +LDLIBS.modem = -lutil +LDLIBS.pngo = -lz +LDLIBS.ptee = -lutil +LDLIBS.relay = -ltls +LDLIBS.scheme = -lm +LDLIBS.title = -lcurl + +-include config.mk + +BINS += beef +BINS += bibsort +BINS += bit +BINS += c +BINS += dtch +BINS += glitch +BINS += hi +BINS += hnel +BINS += modem +BINS += nudge +BINS += order +BINS += pbd +BINS += pngo +BINS += psf2png +BINS += ptee +BINS += scheme +BINS += shotty +BINS += title +BINS += ttpre +BINS += up +BINS += when +BINS += xx + +LINKS += open +LINKS += pbcopy +LINKS += pbpaste + +BINS_BSD += ever +BINS_LINUX += bri +BINS_LINUX += fbatt +BINS_LINUX += fbclock +BINS_LINUX += psfed +BINS_TLS += relay + +BINS_ALL = ${BINS} ${BINS_BSD} ${BINS_LINUX} ${BINS_TLS} +MANS_ALL = ${BINS_ALL:%=man1/%.1} + +any: meta ${BINS} ${LINKS} + +bsd: meta ${BINS_BSD} + +linux: meta ${BINS_LINUX} + +tls: meta ${BINS_TLS} + +meta: .gitignore tags + +.SUFFIXES: .pl + +.c: + ${CC} ${CFLAGS} ${LDFLAGS} $< ${LDLIBS.$@} -o $@ + +.o: + ${CC} ${LDFLAGS} $< ${LDLIBS.$@} -o $@ + +.pl: + cp -f $< $@ + chmod a+x $@ + +hi: hi.c + ${CC} ${CFLAGS} ${LDFLAGS} hi.c ${LDLIBS.$@} -o $@ + ./hi -c + +open pbcopy pbpaste: pbd + ln -f pbd $@ + +fbatt.o fbclock.o: scheme.h + +psf2png.o scheme.o: png.h + +scheme.h: scheme + ./scheme -c > scheme.h + +tags: *.h *.c + ctags -w *.h *.c + +IGNORE = *.o *.html ${BINS_ALL} ${LINKS} scheme.h tags + +.gitignore: Makefile + echo config.mk '${IGNORE}' | tr ' ' '\n' | sort > .gitignore + +clean: + rm -f ${IGNORE} + +setuid: bri + chown root bri + chmod u+s bri + +link: + install -d ${PREFIX}/bin ${MANDIR}/man1 + ln -fs ${BINS_ALL:%=${PWD}/%} ${PREFIX}/bin + ln -fs ${MANS_ALL:%=${PWD}/%} ${MANDIR}/man1 + ln -fs ${LINKS:%=${PWD}/%} ${PREFIX}/bin + +unlink: + rm -f ${BINS_ALL:%=${PREFIX}/bin/%} + rm -f ${MANS_ALL:%=${MANDIR}/%} + rm -f ${LINKS:%=${PREFIX}/bin/%} + +HTMLS = index.html ${BINS_ALL:=.html} png.html +WEBROOT = /usr/local/www/causal.agency + +html: ${HTMLS} + @true + +${HTMLS}: html.sh scheme hi ttpre + +.SUFFIXES: .html + +.c.html: + sh html.sh $< man1/${<:.c=.1} > $@ + +.h.html: + sh html.sh $< man3/${<:.h=.3} > $@ + +.y.html: + sh html.sh $< man1/${<:.y=.1} > $@ + +.sh.html: + sh html.sh $< man1/${<:.sh=.1} > $@ + +.pl.html: + sh html.sh $< man1/${<:.pl=.1} > $@ + +index.html: Makefile README.7 + sh html.sh Makefile README.7 \ + | sed -E 's,([a-z0-9-]+)[(][1-9][)],<a href="\1.html">&</a>,' \ + > index.html + +install-html: ${HTMLS} + install -d ${WEBROOT}/bin + install -C -m 644 ${HTMLS} ${WEBROOT}/bin diff --git a/bin/README.7 b/bin/README.7 new file mode 100644 index 00000000..40dcdd0b --- /dev/null +++ b/bin/README.7 @@ -0,0 +1,83 @@ +.Dd December 15, 2020 +.Dt BIN 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm bin +.Nd various utilities +. +.Sh DESCRIPTION +Various tools primarily targeting +Darwin, +.Fx +and +.Nx . +Some tools target Linux. +. +.Pp +.Bl -tag -width "fbclock(1)" -compact +.It Xr beef 1 +Befunge-93 interpreter +.It Xr bibsort 1 +reformat bibliography +.It Xr bit 1 +calculator +.It Xr bri 1 +backlight brightness control +.It Xr c 1 +run C statements +.It Xr dtch 1 +detached sessions +.It Xr ever 1 +watch files +.It Xr fbatt 1 +framebuffer battery indicator +.It Xr fbclock 1 +framebuffer clock +.It Xr glitch 1 +PNG glitcher +.It Xr hi 1 +syntax highlighter +.It Xr hnel 1 +PTY input remapper +.It Xr modem 1 +fixed baud rate wrapper +.It Xr nudge 1 +terminal vibrator +.It Xr order 1 +operator precedence +.It Xr pbd 1 +macOS pasteboard daemon +.It Xr pngo 1 +PNG optimizer +.It Xr psf2png 1 +PSF2 to PNG renderer +.It Xr psfed 1 +PSF2 font editor +.It Xr ptee 1 +tee for PTYs +.It Xr relay 1 +IRC relay bot +.It Xr scheme 1 +color scheme +.It Xr shotty 1 +terminal capture +.It Xr title 1 +page titles +.It Xr ttpre 1 +man output to HTML +.It Xr up 1 +upload file +.It Xr when 1 +date calculator +.It Xr xx 1 +hexdump +.El +. +.Pp +One piece of reused code. +.Pp +.Bl -tag -width "png(3)" -compact +.It Xr png 3 +basic PNG output +.El diff --git a/bin/beef.c b/bin/beef.c new file mode 100644 index 00000000..b2579b73 --- /dev/null +++ b/bin/beef.c @@ -0,0 +1,141 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <time.h> + +enum { + Cols = 80, + Rows = 25, +}; +static char page[Rows][Cols]; + +static char get(int y, int x) { + if (y < 0 || y >= Rows) return 0; + if (x < 0 || x >= Cols) return 0; + return page[y][x]; +} +static void put(int y, int x, char v) { + if (y < 0 || y >= Rows) return; + if (x < 0 || x >= Cols) return; + page[y][x] = v; +} + +enum { StackLen = 1024 }; +static long stack[StackLen]; +static size_t top = StackLen; + +static void push(long val) { + if (!top) errx(EX_SOFTWARE, "stack overflow"); + stack[--top] = val; +} +static long pop(void) { + if (top == StackLen) return 0; + return stack[top++]; +} + +static struct { + int y, x; + int dy, dx; +} pc = { .dx = 1 }; + +static void inc(void) { + pc.y += pc.dy; + pc.x += pc.dx; + if (pc.y == -1) pc.y += Rows; + if (pc.x == -1) pc.x += Cols; + if (pc.y == Rows) pc.y -= Rows; + if (pc.x == Cols) pc.x -= Cols; +} + +static bool string; + +static bool step(void) { + char ch = page[pc.y][pc.x]; + + if (ch == '"') { + string ^= true; + } else if (string) { + push(ch); + inc(); + return true; + } + + if (ch == '?') ch = "><^v"[rand() % 4]; + + long x, y, v; + switch (ch) { + break; case '+': push(pop() + pop()); + break; case '-': y = pop(); x = pop(); push(x - y); + break; case '*': push(pop() * pop()); + break; case '/': y = pop(); x = pop(); push(x / y); + break; case '%': y = pop(); x = pop(); push(x % y); + break; case '!': push(!pop()); + break; case '`': y = pop(); x = pop(); push(x > y); + break; case '>': pc.dy = 0; pc.dx = +1; + break; case '<': pc.dy = 0; pc.dx = -1; + break; case '^': pc.dy = -1; pc.dx = 0; + break; case 'v': pc.dy = +1; pc.dx = 0; + break; case '_': pc.dy = 0; pc.dx = (pop() ? -1 : +1); + break; case '|': pc.dx = 0; pc.dy = (pop() ? -1 : +1); + break; case ':': x = pop(); push(x); push(x); + break; case '\\': y = pop(); x = pop(); push(y); push(x); + break; case '$': pop(); + break; case '.': printf("%ld ", pop()); fflush(stdout); + break; case ',': printf("%c", (char)pop()); fflush(stdout); + break; case '#': inc(); + break; case 'g': y = pop(); x = pop(); push(get(y, x)); + break; case 'p': y = pop(); x = pop(); v = pop(); put(y, x, v); + break; case '&': x = EOF; scanf("%ld", &x); push(x); + break; case '~': push(getchar()); + break; case '@': return false; + break; default: if (ch >= '0' && ch <= '9') push(ch - '0'); + } + + inc(); + return true; +} + +int main(int argc, char *argv[]) { + srand(time(NULL)); + memset(page, ' ', sizeof(page)); + + FILE *file = stdin; + if (argc > 1) { + file = fopen(argv[1], "r"); + if (!file) err(EX_NOINPUT, "%s", argv[1]); + } + + int y = 0; + char *line = NULL; + size_t cap = 0; + while (y < Rows && 0 < getline(&line, &cap, file)) { + for (int x = 0; x < Cols; ++x) { + if (line[x] == '\n' || !line[x]) break; + page[y][x] = line[x]; + } + y++; + } + free(line); + + while (step()); + return pop(); +} diff --git a/bin/bibsort.pl b/bin/bibsort.pl new file mode 100644 index 00000000..f87f066f --- /dev/null +++ b/bin/bibsort.pl @@ -0,0 +1,66 @@ +#!/usr/bin/env perl +use strict; +use warnings; + +while (<>) { + print; + last if /^[.]Sh STANDARDS$/; +} + +my ($ref, @refs); +while (<>) { + next if /^[.](Bl|It|$)/; + last if /^[.]El$/; + if (/^[.]Rs$/) { + $ref = {}; + } elsif (/^[.]%(.) (.*)/) { + $ref->{$1} = [] unless $ref->{$1}; + push @{$ref->{$1}}, $2; + } elsif (/^[.]Re$/) { + push @refs, $ref; + } else { + print; + } +} + +sub byLast { + my ($af, $al) = split /\s(\S+)(,.*)?$/, $a; + my ($bf, $bl) = split /\s(\S+)(,.*)?$/, $b; + $al cmp $bl || $af cmp $bf; +} + +foreach $ref (@refs) { + @{$ref->{A}} = sort byLast @{$ref->{A}}; + @{$ref->{Q}} = sort @{$ref->{Q}} if $ref->{Q}; + next unless $ref->{N}; + if ($ref->{N}[0] =~ /RFC/) { + $ref->{R} = $ref->{N}; + delete $ref->{N}; + } +} + +sub byAuthor { + local ($a, $b) = ($a->{A}[0], $b->{A}[0]); + byLast(); +} + +{ + local ($,, $\) = (' ', "\n"); + print '.Bl', '-item'; + foreach $ref (sort byAuthor @refs) { + print '.It'; + print '.Rs'; + foreach my $key (qw(A T B I J R N V U P Q C D O)) { + next unless $ref->{$key}; + foreach (@{$ref->{$key}}) { + print ".%${key}", $_; + } + } + print '.Re'; + } + print '.El'; +} + +while (<>) { + print; +} diff --git a/bin/bit.y b/bin/bit.y new file mode 100644 index 00000000..0a9bc7ce --- /dev/null +++ b/bin/bit.y @@ -0,0 +1,194 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +%{ + +#include <ctype.h> +#include <err.h> +#include <inttypes.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <sysexits.h> + +#define MASK(b) ((1ULL << (b)) - 1) + +static void yyerror(const char *str); +static int yylex(void); + +#define YYSTYPE uint64_t + +static uint64_t vars[128]; + +%} + +%right '=' +%left '|' +%left '^' +%left '&' +%left Shl Shr Sar +%left '+' '-' +%left '*' '/' '%' +%right '~' +%left 'K' 'M' 'G' 'T' + +%token Int Var + +%% + +stmt: + expr { vars['_'] = $1; } + ; + +expr: + Int + | Var { $$ = vars[$1]; } + | '(' expr ')' { $$ = $2; } + | expr 'K' { $$ = $1 << 10; } + | expr 'M' { $$ = $1 << 20; } + | expr 'G' { $$ = $1 << 30; } + | expr 'T' { $$ = $1 << 40; } + | '~' expr { $$ = ~$2; } + | '-' expr { $$ = -$2; } + | expr '*' expr { $$ = $1 * $3; } + | expr '/' expr { $$ = $1 / $3; } + | expr '%' expr { $$ = $1 % $3; } + | expr '+' expr { $$ = $1 + $3; } + | expr '-' expr { $$ = $1 - $3; } + | expr Shl expr { $$ = $1 << $3; } + | expr Shr expr { $$ = $1 >> $3; } + | expr Sar expr { $$ = (int64_t)$1 >> $3; } + | expr '&' expr { $$ = $1 & $3; } + | expr '^' expr { $$ = $1 ^ $3; } + | expr '|' expr { $$ = $1 | $3; } + | Var '=' expr { $$ = vars[$1] = $3; } + ; + +%% + +static void yyerror(const char *str) { + warnx("%s", str); +} + +#define T(a, b) ((int)(a) << 8 | (int)(b)) + +static const char *input; + +static int lexInt(uint64_t base) { + for (yylval = 0; input[0]; ++input) { + uint64_t digit; + if (input[0] == '_') { + continue; + } else if (input[0] >= '0' && input[0] <= '9') { + digit = input[0] - '0'; + } else if (input[0] >= 'A' && input[0] <= 'F') { + digit = 0xA + input[0] - 'A'; + } else if (input[0] >= 'a' && input[0] <= 'f') { + digit = 0xA + input[0] - 'a'; + } else { + return Int; + } + if (digit >= base) return Int; + yylval *= base; + yylval += digit; + } + return Int; +} + +static int yylex(void) { + while (isspace(input[0])) input++; + if (!input[0]) return EOF; + + if (input[0] == '\'' && input[1] && input[2] == '\'') { + yylval = input[1]; + input += 3; + return Int; + } + + if (input[0] == '0') { + if (input[1] == 'b') { + input += 2; + return lexInt(2); + } else if (input[1] == 'x') { + input += 2; + return lexInt(16); + } else { + input += 1; + return lexInt(8); + } + } else if (isdigit(input[0])) { + return lexInt(10); + } + + if (input[0] == '_' || islower(input[0])) { + yylval = *input++; + return Var; + } + + switch (T(input[0], input[1])) { + case T('<', '<'): input += 2; return Shl; + case T('>', '>'): input += 2; return Shr; + case T('-', '>'): input += 2; return Sar; + default: return *input++; + } +} + +int main(void) { + char *line = NULL; + size_t cap = 0; + while (0 < getline(&line, &cap, stdin)) { + if (line[0] == '\n') continue; + + input = line; + int error = yyparse(); + if (error) continue; + + uint64_t result = vars['_']; + + int bits = result > UINT32_MAX ? 64 + : result > UINT16_MAX ? 32 + : result > UINT8_MAX ? 16 + : 8; + + printf("0x%0*"PRIX64" %"PRId64"", bits >> 2, result, (int64_t)result); + + if (bits == 8) { + char bin[9] = {0}; + for (int i = 0; i < 8; ++i) { + bin[i] = '0' + (result >> (7 - i) & 1); + } + printf(" 0b%s", bin); + } + + if (result < 128 && isprint(result)) { + printf(" '%c'", (char)result); + } + + if (result) { + if (!(result & MASK(40))) { + printf(" %"PRIu64"T", result >> 40); + } else if (!(result & MASK(30))) { + printf(" %"PRIu64"G", result >> 30); + } else if (!(result & MASK(20))) { + printf(" %"PRIu64"M", result >> 20); + } else if (!(result & MASK(10))) { + printf(" %"PRIu64"K", result >> 10); + } + } + + printf("\n\n"); + } +} diff --git a/bin/bri.c b/bin/bri.c new file mode 100644 index 00000000..81df2995 --- /dev/null +++ b/bin/bri.c @@ -0,0 +1,85 @@ +/* Copyright (C) 2017 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <dirent.h> +#include <err.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <unistd.h> + +typedef unsigned uint; + +static const char *Class = "/sys/class/backlight"; + +int main(int argc, char *argv[]) { + int error; + + const char *input = (argc > 1) ? argv[1] : NULL; + + error = chdir(Class); + if (error) err(EX_OSFILE, "%s", Class); + + DIR *dir = opendir("."); + if (!dir) err(EX_OSFILE, "%s", Class); + + struct dirent *entry; + while (NULL != (errno = 0, entry = readdir(dir))) { + if (entry->d_name[0] == '.') continue; + + error = chdir(entry->d_name); + if (error) err(EX_OSFILE, "%s/%s", Class, entry->d_name); + break; + } + if (!entry) { + if (errno) err(EX_IOERR, "%s", Class); + errx(EX_CONFIG, "%s: empty", Class); + } + + FILE *actual = fopen("actual_brightness", "r"); + if (!actual) err(EX_OSFILE, "actual_brightness"); + + uint value; + int match = fscanf(actual, "%u", &value); + if (match == EOF) err(EX_IOERR, "actual_brightness"); + if (match < 1) errx(EX_DATAERR, "actual_brightness"); + + if (!input) { + printf("%u\n", value); + return EX_OK; + } + + if (input[0] == '+' || input[0] == '-') { + size_t count = strnlen(input, 16); + if (input[0] == '+') { + value += 16 * count; + } else { + value -= 16 * count; + } + } else { + value = strtoul(input, NULL, 0); + } + + FILE *brightness = fopen("brightness", "w"); + if (!brightness) err(EX_OSFILE, "brightness"); + + int size = fprintf(brightness, "%u", value); + if (size < 0) err(EX_IOERR, "brightness"); + + return EX_OK; +} diff --git a/bin/c.sh b/bin/c.sh new file mode 100644 index 00000000..f1143fd3 --- /dev/null +++ b/bin/c.sh @@ -0,0 +1,87 @@ +#!/bin/sh +set -eu + +temp=$(mktemp -d) +trap 'rm -r "${temp}"' EXIT + +exec 3>>"${temp}/run.c" + +cat >&3 <<EOF +#include <assert.h> +#include <ctype.h> +#include <errno.h> +#include <inttypes.h> +#include <limits.h> +#include <locale.h> +#include <math.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <wchar.h> +#include <wctype.h> + +#include <fcntl.h> +#include <strings.h> +#include <unistd.h> +EOF + +expr= +while getopts 'e:i:' opt; do + case "${opt}" in + (e) expr=$OPTARG;; + (i) echo "#include <${OPTARG}>" >&3;; + (?) exit 1;; + esac +done +shift $((OPTIND - 1)) + +cat >&3 <<EOF +int main(int argc, char *argv[]) { + (void)argc; + (void)argv; + $*; +EOF + +if [ -n "${expr}" ]; then + cat >&3 <<EOF + printf( + _Generic( + ${expr}, + char: "%c\n", + char *: "%s\n", + const char *: "%s\n", + wchar_t *: "%ls\n", + const wchar_t *: "%ls\n", + signed char: "%hhd\n", + short: "%hd\n", + int: "%d\n", + long: "%ld\n", + long long: "%lld\n", + unsigned char: "%hhu\n", + unsigned short: "%hu\n", + unsigned int: "%u\n", + unsigned long: "%lu\n", + unsigned long long: "%llu\n", + double: "%g\n", + default: "%p\n" + ), + ${expr} + ); +EOF +fi + +if [ $# -eq 0 -a -z "${expr}" ]; then + cat >&3 +fi + +echo '}' >&3 + +cat >"${temp}/Makefile" <<EOF +CFLAGS += -Wall -Wextra -Wpedantic +EOF + +make -s -C "${temp}" run +"${temp}/run" diff --git a/bin/dash/.gitignore b/bin/dash/.gitignore new file mode 100644 index 00000000..e349901a --- /dev/null +++ b/bin/dash/.gitignore @@ -0,0 +1,42 @@ +# .gitignore for dash + +# generated by autogen.sh +Makefile.in +/aclocal.m4 +/autom4te.cache/ +/compile +/config.h.in +/configure +/depcomp +/install-sh +/missing + +# generated by configure +Makefile +.deps +.dirstamp +/config.cache +/config.h +/config.log +/config.status +/stamp-h1 + +# generated by make +/src/token_vars.h + +# Apple debug symbol bundles +*.dSYM/ + +# backups and patch artefacts +*~ +*.bak +*.orig +*.rej + +# OS generated files +.DS_Store +.DS_Store? +._* +.Spotlight* +.Trash* +*[Tt]humbs.db diff --git a/bin/dash/COPYING b/bin/dash/COPYING new file mode 100644 index 00000000..37f8189c --- /dev/null +++ b/bin/dash/COPYING @@ -0,0 +1,56 @@ +Copyright (c) 1989-1994 + The Regents of the University of California. All rights reserved. +Copyright (c) 1997 Christos Zoulas. All rights reserved. +Copyright (c) 1997-2005 + Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + +This code is derived from software contributed to Berkeley by Kenneth Almquist. + + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. +3. Neither the name of the University nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +SUCH DAMAGE. + +mksignames.c: + +This file is not directly linked with dash. However, its output is. + +Copyright (C) 1992 Free Software Foundation, Inc. + +This file is part of GNU Bash, the Bourne Again SHell. + +Bash is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 2, or (at your option) any later +version. + +Bash is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License with +your Debian GNU/Linux system, in /usr/share/common-licenses/GPL, or with the +Debian GNU/Linux hello source package as the file COPYING. If not, +write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, +Boston, MA 02111 USA. diff --git a/bin/dash/ChangeLog b/bin/dash/ChangeLog new file mode 100644 index 00000000..406e20c0 --- /dev/null +++ b/bin/dash/ChangeLog @@ -0,0 +1,806 @@ +2014-11-17 Stéphane Aulery <saulery@free.fr> + + * Correct typo in manual page. + * Document redirection file descriptor limitation. + +2014-10-30 Herbert Xu <herbert@gondor.apana.org.au> + + * Catch variable length expansions on non-existant specials. + +2014-10-28 Herbert Xu <herbert@gondor.apana.org.au> + + * Removed unnecessary pungetc on EOF from parser. + * Simplify EOF/newline handling in list parser. + +2014-10-27 Herbert Xu <herbert@gondor.apana.org.au> + + * Add printf support for format string a, A, and F. + * Handle embedded NULs correctly in printf. + * Replace open-coded flushall in preadbuffer. + * Add likely tag in outmem. + * Add ifdefs around MEM_OUT handling in outmem. + * Remove unnecessary restoration of format string in printf. + * Remove getintmax in printf. + * Use error instead of warnx for fatal errors in printf. + * Optimise handling of backslash octals in printf. + * Simplify echo command. + * Handle -- in dotcmd. + +2014-10-13 Eric Blake <eblake@redhat.com> + + * cd: support drive letters on Cygwin. + +2014-10-08 Herbert Xu <herbert@gondor.apana.org.au> + + * Split unquoted $@/$* correctly when IFS is set but empty. + * Do not split quoted VSLENGTH and VSTRIM. + * Optimise nulonly away and just use quoted as before. + +2014-10-07 Herbert Xu <herbert@gondor.apana.org.au> + + * Use setvareq to set OPTIND initially. + +2014-10-06 Herbert Xu <herbert@gondor.apana.org.au> + + * Exit without arguments in a trap should use status outside traps. + * Do not allow break to break across function calls. + * Move common skipcount logic into skiploop. + * Allow return in loop conditional to set exit status. + * Return without arguments in a trap should use status outside traps. + +2014-10-03 Herbert Xu <herbert@gondor.apana.org.au> + + * Do not clobber exitstatus in evalcommand. + +2014-10-02 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix use-after-free in dotrap/evalstring. + * Make sure evalskip is zero before running traps. + * Set exitstatus in onint. + +2014-09-29 Herbert Xu <herbert@gondor.apana.org.au> + + * Kill pgetc_macro. + * Handle backslash newlines properly after dollar sign. + * Add nlprompt/nlnoprompt helpers. + +2014-09-28 Herbert Xu <herbert@gondor.apana.org.au> + + * Correctly handle test ! ! = !. + +2014-09-26 Herbert Xu <herbert@gondor.apana.org.au> + + * Small optimisation of command -pv change. + * Set command -p path to /usr/sbin:/usr/bin:/sbin:/bin. + * Change "characters" for printf precision to "bytes". + * Release 0.5.8. + +2014-09-26 Jonathan Nieder <jrnieder@gmail.com> + + * Clarify "trap '' signals" syntax in manual page. + +2014-09-26 Adam Buchbinder <adam.buchbinder@gmail.com> + + * Clarify that 0 and EXIT are both acceptable for exit traps. + +2014-09-26 Harald van Dijk <harald@gigawatt.nl> + + * command: allow combining -p with -v. + * getjob: Fix off-by-one error for multiple of four job numbers + +2013-08-23 Herbert Xu <herbert@gondor.apana.org.au> + + * Propagate EXP_QPAT in subevalvar. + * Initialise OPTIND after importing environment. + * Fixed argument parsing crash in test. + +2013-03-12 Peter Rosin <peda@lysator.liu.se> + + * Add newline when tracing in poplocalvars. + +2013-01-10 Jérémie Courrèges-Anglas <jca+dash@wxcvbn.org> + + * Markup fixes in manual for mandoc 1.12.1. + +2012-12-03 Harald van Dijk <harald@gigawatt.nl> + + * Use PRIdMAX instead of %j in printf. + +2012-07-20 Kimo Rosenbaum <kimor79@yahoo.com> + + * Fix typo for wait in manual. + +2012-06-09 Christoph Mathys <eraserix@gmail.com> + + * Add support for ulimit -r. + +2012-03-11 Jim Meyering <meyering@redhat.com> + + * Avoid overflow for very long variable name. + $ perl -le 'print "v"x(2**31+1) ."=1"' | dash + +2012-02-25 Herbert Xu <herbert@gondor.apana.org.au> + + * Sanitise environment variable names on entry. + +2011-08-17 David S. Miller <davem@davemloft.net> + + * Allow building without LINEO support. + * Add top-level autogen.sh. + +2011-07-26 Harald van Dijk <harald@gigawatt.nl> + + * Avoid imaxdiv when only one of the results is wanted. + +2010-07-09 maximilian attems <max@stro.at> + + * Fix klibc DEBUG compilation. + +2011-07-09 Herbert Xu <herbert@gondor.apana.org.au> + + * Merge SKIPFUNC/SKIPFILE and only clear SKIPFUNC when leaving dotcmd. + +2011-07-08 Herbert Xu <herbert@gondor.apana.org.au> + + * Release 0.5.7. + +2011-07-07 Herbert Xu <herbert@gondor.apana.org.au> + + * Optimize dash -c "command" to avoid a fork. + * Eliminate unnecessary promotion in echocmd. + +2011-05-25 Jim Meyering <meyering@redhat.com> + + * Avoid using undefined handler. + +2011-05-23 Jim Meyering <meyering@redhat.com> + + * Avoid gcc warning: variable 'oldstackp' set but not used. + * Avoid clang warning about dead store to "size". + +2011-05-22 Jonathan Nieder <jrnieder@gmail.com> + + * Make outc an inline function. + +2011-05-02 Kalle Olavi Niemitalo <kon@iki.fi> + + * Remove spurious space in descriptions of PS1, PS2, PS4. + +2011-04-10 Jonathan Nieder <jrnieder@gmail.com> + + * Remove unused EV_BACKCMD flag. + +2011-03-15 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix clobbering of checkkwd. + +2011-03-15 Jonathan Nieder <jrnieder@gmail.com> + + * Free IFS state after here document expansion. + * Use va_copy when reusing a va_list. + +2011-03-15 Harald van Dijk <harald@gigawatt.nl> + + * Let funcnode refer to a function definition, not its first command. + * Improve LINENO support. + +2011-03-15 Brian Koropoff <bkoropoff@gmail.com> + + * Port to Solaris. + +2011-03-11 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix backslash handling in read(1). + +2011-03-10 Jonathan Nieder <jrnieder@gmail.com> + + * Dotcmd should exit with zero when doing nothing. + +2011-03-10 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix CTLESC clobbering by read(1). + +2011-03-10 Brian Koropoff <bkoropoff@gmail.com> + + * Port to AIX. + +2011-03-10 Jilles Tjoelker <jilles@stack.nl> + + * Replace GPL noclobberopen code with the FreeBSD version. + * Do not split the result of tilde expansion. + +2010-11-28 Maciej Å»enczykowski <zenczykowski@gmail.com> + + * Mark status as volatile in exitshell. + +2010-11-28 Jonathan Nieder <jrnieder@gmail.com> + + * Use EXEXIT in place of EXEXEC. + * Stop documenting EXSHELLPROC. + +2010-11-28 Gerrit Pape <pape@smarden.org> + + * Use exit status 127 when the script to run does not exist. + +2010-11-28 Philipp Weis <pweis@pweis.com> + + * Document optional open parenthesis for case patterns. + +2010-11-28 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed trap/return regression due to SKIPEVAL removal. + * Allow the originator of EXERROR to set the exit status. + * Free IFS state in evalbackcmd. + +2010-10-18 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix ifsfirst/ifslastp leak in casematch. + +2010-10-07 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix EXEXEC status clobbering. + +2010-09-08 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix ifsfirst/ifslastp leak. + * Fix trailing field bug in read(1). + +2010-09-08 maximilian attems <max@stro.at> + + * Debug compile fix. + +2010-09-08 Jilles Tjoelker <jilles@stack.nl> + + * Fix varinit ordering that broke fc. + +2010-07-06 Gerrit Pape <pape@smarden.org> + + * Check exit for eval NSUBSHELL. + +2010-07-06 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix loss of variables when hash collides. + * Removed dead code for eval NPIPE. + +2010-06-28 Gerrit Pape <pape@smarden.org> + + * Don't clear eflag in evalbackcmd. + +2010-05-29 Herbert Xu <herbert@gondor.apana.org.au> + + * Continue after EINTR in read(1) with no pending signals. + +2010-05-27 Jilles Tjoelker <jilles@stack.nl> + + * Force fork if any trap is set, not just on EXIT. + * Fix corruption of redirections with byte 0x81. + +2010-05-27 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix poplocalvar on abnormal exit from function. + * Do not poplocalvars prematurely on regular utilities. + * Move null redirect checks into caller. + * Fix popredir on abnormal exit from built-in. + * Fix wait regression where it does not wait for all jobs. + +2010-05-26 Herbert Xu <herbert@gondor.apana.org.au> + + * Replace cmdenviron with localvars. + +2010-05-25 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix poplocalvar leak. + * Move unsetvar functionality into setvareq. + +2010-05-24 Herbert Xu <herbert@gondor.apana.org.au> + + * Add localvars nesting, local now fails outside functions. + +2010-05-03 Gerrit Pape <pape@smarden.org> + + * Fix command -- crash. + +2010-04-15 H. Peter Anvin <hpa@zytor.com> + + * Fix for job control off warning. + +2010-04-02 Herbert Xu <herbert@gondor.apana.org.au> + + * Use faccessat if available. + +2010-04-02 Herbert Xu <herbert@gondor.apana.org.au> + + * Make trap signal name/number errors non-fatal. + * Release 0.5.6. + +2010-04-02 maximilian attems <max@stro.at> + + * Use TMPDIR in mkbuiltins. + +2010-03-10 Jilles Tjoelker <jilles@stack.nl> + + * Fix logical or result value. + +2010-03-09 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix binary operator parsing. + +2009-11-26 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix off-by-one recordregion in readcmd. + +2009-09-28 Jim Meyering <meyering@redhat.com> + + don't read-uninitialized for \177 in a here-doc + A DEL (0177, dec 127) byte in a here-document would cause dash to + access uninitialized memory at the end of one of the syntax.c tables, + since those tables are sized to accommodate a maximum index of + BASESYNTAX + 126. Make the generated tables one byte larger. + printf ':<<\\E\n\200y\nE'|./dash + * src/mksyntax.c (filltable): Use 258, not 257 as the size, + so that BASESYNTAX(=130) + 127 is a valid index. + (print): Likewise. + Don't emit explicit array dimension in declaration. + +2009-08-31 Eric Blake <ebb9@byu.net> + + * Avoid compiler warnings on isdigit. + +2009-08-31 Matthew Burgess <matthew@linuxfromscratch.org> + + * Add another missing LC_COLLATE to mkbuiltins. + +2009-08-31 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix NUL termination in readcmd. + * Lookup PWD after going through CDPATH. + +2009-08-11 Herbert Xu <herbert@gondor.apana.org.au> + + * Pass EV_TESTED into evalcmd. + * Revert SKIPEVAL into EXEXIT. + +2009-08-11 Rocky Bernstein <rocky.bernstein@gmail.com> + + * Add preliminary LINENO support. + +2009-08-11 Stefan Potyra <stefan.potyra@informatik.uni-erlangen.de> + + * Honor tab as IFS whitespace when splitting fields in readcmd. + +2009-06-30 Herbert Xu <herbert@gondor.apana.org.au> + + * Do not truncate file for FROMTO redirection. + +2009-06-27 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix quoted pattern patch breakage. + +2009-05-23 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix incorrect savefd conversions. + +2009-02-22 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix dowait signal race. + * Remove EXSIG. + * Do not close stderr when /dev/tty fails to open. + * Allow newlines after var name in for statements. + * Use CHKNL to parse case statements. + +2009-02-22 Gerrit Pape <pape@smarden.org> + + * Update manual page to differentiate dash from ash. + +2009-01-14 Herbert Xu <herbert@gondor.apana.org.au> + + * Add arith_yacc.h to dash_SOURCES. + * Release 0.5.5.1. + +2009-01-13 Herbert Xu <herbert@gondor.apana.org.au> + + * Release 0.5.5. + +2009-01-13 Mark Mentovai <mmentovai@gmail.com> + + * Fixed build on OS X. + +2008-12-26 Aleksey Cheusov <vle@gmx.net> + + * Fixed build on NetBSD. + +2008-10-17 Herbert Xu <herbert@gondor.apana.org.au> + + * Removed obsolete for loop syntax in manual. + +2008-08-05 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed getcwd build error for the non-glibc case. + +2008-06-13 Gerrit Pape <pape@smarden.org> + + * Added missing right parenthesis in manual page. + +2008-06-13 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed 3,4-argument cases for test per POSIX. + * Made aexpr/oexpr non-recursive. + * Made t_lex reentrant. + * Made setinputfd static. + * Expand ENV before using it. + * Added support for -l. + +2008-05-19 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed non-leading slash treatment in expmeta. + +2008-05-07 Gerrit Pape <pape@smarden.org> + + * Fixed lexical error in arithmetic expansion of & and |. + +2008-05-03 Dan McGee <dpmcgee@gmail.com> + + * Fixed klibc/klcc build problems. + * Added gitignore. + +2008-05-03 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed _PATH_BSHELL warning. + * Test __GLIBC__ instead of _GNU_SOURCE. + * Restored warning when getcwd fails. + * Set default exvwarning2 arg0 for errors during early initialisation. + * Use uninitialized_var to silence bogus warnings. + +2008-05-02 Herbert Xu <herbert@gondor.apana.org.au> + + * Restored non-glibc getcwd support. + +2008-03-07 Larry Doolittle <ldoolitt@recycle.lbl.gov> + + * Fix cmdtxt crash on if statements. + +2008-01-01 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix slash treatment in expmeta. + +2007-12-27 Herbert Xu <herbert@gondor.apana.org.au> + + * Add FAKEEOFMARK for expandstr. + * Do not show prompts in expandstr. + +2007-12-23 Gerrit Pape <pape@smarden.org> + + * If imaxdiv() isn't available, use / and % operators. + +2007-12-23 Richard M Kreuter <kreuter@progn.net> + + * Add set +o support. + +2007-12-23 Steve Langasek <steve.langasek@canonical.com> + + * Fixed bad pointer arithmetic in evalcommand. + +2007-11-11 Herbert Xu <herbert@gondor.apana.org.au> + + * Removed noexpand/length check on eofmark. + * Removed herefd hack. + * Expand here-documents in the current shell environment. + +2007-10-20 Herbert Xu <herbert@gondor.apana.org.au> + + * Added configure --enable-glob and --enable-fnmatch options. + * Fix here-doc corruption. + +2007-10-17 Herbert Xu <herbert@gondor.apana.org.au> + + * Replace shared illnum message by badnum function. + +2007-10-17 Oleg Verych <olecom@flower.upol.cz> + + * Disallow completely blank strings in non-arithmetic context. + +2007-10-15 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed execing of scripts with no hash-bang. + +2007-10-11 Herbert Xu <herbert@gondor.apana.org.au> + + * Add assignment support in arithmetic expansions. + * Size optimisations in arithmetic lexer. + * Add likely flags in expari. + * Use setvarint to set OPTIND. + +2007-10-08 Herbert Xu <herbert@gondor.apana.org.au> + + * Report substition errors at expansion time. + +2007-10-06 Herbert Xu <herbert@gondor.apana.org.au> + + * Add pushstackmark. + * Treat OPTIND=0 in the same way as OPTIND=1. + * Remove setvarsafe. + * Use intmax_t arithmetic in test. + +2007-10-05 Herbert Xu <herbert@gondor.apana.org.au> + + * Made grabstackblock an inline wrapper for stalloc. + +2007-10-04 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix parsing of ${##1}. + * Size optimisations in parameter expansion parser. + +2007-10-04 Alexey Gladkov <legion@altlinux.org> + + * Add --enable-static option to configure. + +2007-09-26 Herbert Xu <herbert@gondor.apana.org.au> + + * Recognise here-doc delimiters terminated by EOF. + +2007-09-26 Roy Marples <uberlord@gentoo.org> + + * Refresh stack pointers after makestrspace in _rmescapes. + +2007-09-25 Gerrit Pape <pape@smarden.org> + + * Clarify description of -nt, -ot options to test builtin. + * Clarify syntax of the for command. + +2007-09-25 Herbert Xu <herbert@gondor.apana.org.au> + + * Do not expand tilde in parameter expansion within quotes. + * Move parse-time quote flag detection to run-time. + +2007-09-24 Herbert Xu <herbert@gondor.apana.org.au> + + * Do not quote back slashes in parameter expansions outside quotes. + * Perform tilde expansion in all parameter expansion words. + * Remove superfluous arinest test in CENDQUOTE. + * Remove superfluous arinest test for dqvarnest. + * Remove superfluous dblquote settings when ending arith. + * Remove arithmetic expansion collapsing at parse time. + +2007-09-22 Oleg Verych <olecom@flower.upol.cz> + + * White space fixes for test(1). + * Use direct comparison instead of strcmp in test(1). + +2007-09-22 Herbert Xu <herbert@gondor.apana.org.au> + + * Move flushall to the point just before _exit. + +2007-09-21 Denis Vlasenko <vda.linux@googlemail.com> + + * Restore foreground process group on exit. + +2007-07-12 Herbert Xu <herbert@gondor.apana.org.au> + + * Release 0.5.4. + +2007-05-12 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix redirect restore on closed file descriptors. + * Size optimisations in redir.c. + +2007-05-06 Herbert Xu <herbert@gondor.apana.org.au> + + * Removed unnecessary inclusion of redir.h from parser.c. + * Invoke sh_error on error in copyfd. + * Use dup2 instead of copyfd in evalbackcmd. + * Replace copyfd by savefd and dup2. + * Removed redundant CLOEXEC calls. + +2007-05-05 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed typo in parser.h comment. + +2007-04-28 Dan Nicholson <dbn.lists@gmail.com> + + * Set LC_COLLATE for sort in mkbuiltin. + +2006-10-22 Gerrit Pape <pape@smarden.org> + + * Fixed command -v segmentation fault. + +2006-10-13 Alexey Gladkov <legion@altlinux.org> + + * Check return code for getgroups and fwrite. + +2006-10-04 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed inverted char class matching. + +2006-05-23 Alexey Gladkov <legion@altlinux.org> + + * Added --with-libedit option to configure. + +2006-03-29 Herbert Xu <herbert@gondor.apana.org.au> + + * Removed useless parsebackquote flag. + * Use alloca to get rid of setjmp in parse.c. + * Only use signed char for syntax arrays. + +2006-01-12 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed eval exit status with empty arguments. + +2005-11-26 Herbert Xu <herbert@gondor.apana.org.au> + + * Release 0.5.3. + +2005-11-14 Herbert Xu <herbert@gondor.apana.org.au> + + * Fix \c spillage across echo commands. + +2005-11-13 Herbert Xu <herbert@gondor.apana.org.au> + + * Remove unnecessary truncation in _STPUTC. + * Always call conv_escape_str in echocmd. + +2005-11-04 Herbert Xu <herbert@gondor.apana.org.au> + + * Use mktemp if tempfile is not available. + +2005-10-30 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed support for disabling job control. + +2005-10-29 Herbert Xu <herbert@gondor.apana.org.au> + + * Updated BSD licence to 3-clause version per NetBSD. + * Updated copyright. + * Removed CVS IDs and inclusion of sys/cdefs.h. + * Removed use of __P from error.h. + * Use bsd_signal if it exists and signal does not. + * Stop using sysexits.h in commandcmd. + * Use stat if stat64 does not exist. + * Added default implementation of bsearch. + * Added getpwhome as a wrapper for getpwnam. + * Fixed gcc 4.0 compilation problems. + * Added missing system.h inclusion for mempcpy. + * Added default implementation of strsignal. + * Added default implementation of killpg. + * Disable ulimit if there is no getrlimit. + * Disable histcmd completely when SMALL is defined. + * Added default definition for SSIZE_MAX. + * Removed standalone/csh support from printf. + * Added dummy strtod implementation. + * Removed standalone/csh support from test. + * Added dummy sysconf implementation. + * Include system.h for stpcpy in nodes.c. + * Added out-of-line ctypes functions for klibc. + * Fixed fallback stpcpy implementation. + +2005-10-26 Herbert Xu <herbert@gondor.apana.org.au> + + * Size optimisations in preadbuffer(). + +2005-10-01 Herbert Xu <herbert@gondor.apana.org.au> + + * Skip NUL characters properly in input.c. + +2005-03-28 Herbert Xu <herbert@gondor.apana.org.au> + + * Removed some unnecessary inclusions of input.h. + * Removed unnecessary inclusion of main.h from eval.c. + * Removed unnecessary inclusion of eval.h from parser.c. + * Generalise setinputfile for use in read_profile/readcmdfile. + * Handle SKIPEVAL in read_profile by exiting. + * Let evaltree handle traps from cmdloop. + * Reset evalskip after minusc is executed. + * Stop executing traps once SKIPEVAL is seen. + * Only handle each signal once in dotrap. + +2005-03-25 Gerrit Pape <pape@smarden.org> + + * Add trailing equal sign in setvar for variables set to null. + +2005-03-25 Herbert Xu <herbert@gondor.apana.org.au> + + * Cleaned up src/Makefile.am. + * Get rid of duplicate -g -O2 in CFLAGS. + * Eliminate first null termination in setvar. + * Turn evalskip into a bit field. + +2005-03-25 Gilles Chanteperdrix <gilles.chanteperdrix@laposte.net> + + * Fixed support for cross-compilation. + +2005-03-03 Herbert Xu <herbert@gondor.apana.org.au> + + * Removed qflag. + * Removed redundant setstackmark from dotcmd. + * Do not clobber exit status in dotcmd. + +2005-03-02 Herbert Xu <herbert@gondor.apana.org.au> + + * Renamed symbols to avoid conflict with libc. + * Optimisations in bltin/test.c. + +2005-02-28 Herbert Xu <herbert@gondor.apana.org.au> + + * Replaced EXEVAL with SKIPEVAL. + * Update funcnest atomically. + * Only set skipcount for break and continue. + * Removed expcmd built-in. + * Normalise input in likely/unlikely macros. + +2005-02-28 A Costa <agcosta@gis.net> + + * Corrected that/than typo in manual page. + +2005-02-25 A Costa <agcosta@gis.net> + + * Corrected grammar in manual page. + +2005-02-25 Herbert Xu <herbert@gondor.apana.org.au> + + * Changed boolean rootshell into shlvl counter. + * Catch set -e exits within built-in commands. + * Size optimisations with setjmp in main(). + * Only reread exitstatus on EXEXIT in exitshell. + * Eliminated global exerrno. + +2005-01-31 Gerrit Pape <pape@smarden.org> + + * Release 0.5.2. + * Corrected manual entry about ENV and non-interactive shells. + +2004-11-24 Gerrit Pape <pape@smarden.org> + + * Spell behaviour consistently in manual page. + +2004-11-23 A Costa <agcosta@gis.net> + + * Fixed spelling errors in manual page. + +2004-08-21 Herbert Xu <herbert@gondor.apana.org.au> + + * Size optimisations around varvalue() in src/expand.c. + * Fixed signed char promotion in src/expand.c. + +2004-08-18 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed $@ expansion when leading argument is null in src/expand.c. + +2004-08-07 Herbert Xu <herbert@gondor.apana.org.au> + + * Allow negative pid argument to kill(1) in src/jobs.c. + +2004-08-04 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed cd - when OLDPWD is unset in src/cd.c. + +2004-07-09 Herbert Xu <herbert@gondor.apana.org.au> + + * Include system.h (Gerrit Pape): + . src/mystring.c + . src/var.c + . src/bltin/printf.c + +2004-07-03 Herbert Xu <herbert@gondor.apana.org.au> + + * Release 0.5.1. + * Use automake and autoconf. + * Include stdlib.h for exit(3) in src/mksyntax.c. + +2004-06-29 Herbert Xu <herbert@gondor.apana.org.au> + + * Added sigclearmask. + * Removed hack for _setjmp/_longjmp. + * Added default implementations of mempcpy/stpcpy/strchrnul. + * Use strtoll/strtoull if strtoimax/strtoumax are unavailable. + * Removed sh.1 to dash.1. + +2004-05-28 Herbert Xu <herbert@gondor.apana.org.au> + + * Fixed vstype trim operator ordering in cmdputs. + * Fixed quote for CTLENDVAR in cmdputs. + * Fixed VSLENGTH crash in cmdputs. + * Turned vstype back into a 2-d array of chars. + * Added POSIX character class support in pmatch. + +For older ChangeLogs see ChangeLog.O. + +ChangeLog ends here diff --git a/bin/dash/ChangeLog.O b/bin/dash/ChangeLog.O new file mode 100644 index 00000000..dfdb2cec --- /dev/null +++ b/bin/dash/ChangeLog.O @@ -0,0 +1,1023 @@ +dash (0.4.26) unstable; urgency=low + + * Disabled fnmatch code again (closes: #240887). + * Updated copyright. + * Updated German debconf translation (Florian Ernst, closes: #244507). + * Fixed obstack corruption in setprompt (closes: #246635). + + -- Herbert Xu <herbert@debian.org> Fri, 30 Apr 2004 21:48:52 +1000 + +dash (0.4.25) unstable; urgency=low + + * Fixed use-after-free bug in setvareq (Vladimir N. Oleynik). + * Fixed value of expdest after _STPUTC in expandarg (closes: #238265). + + -- Herbert Xu <herbert@debian.org> Thu, 18 Mar 2004 20:55:57 +1100 + +dash (0.4.24) unstable; urgency=low + + * Fixed segmentation fault when PWD is undefined. + + -- Herbert Xu <herbert@debian.org> Tue, 9 Mar 2004 19:58:41 +1100 + +dash (0.4.23) unstable; urgency=low + + * Verify PWD before using it. + + -- Herbert Xu <herbert@debian.org> Mon, 8 Mar 2004 20:12:27 +1100 + +dash (0.4.22) unstable; urgency=low + + * Read PWD from environment (closes: #228659). + * Added Danish debconf translation (Claus Hindsgaul, closes: #233756). + * Added check_gcc to support gcc 2.95 (closes: #235933). + * Perform here-doc expansion on PS1/PS2/PS4 (closes: #230858). + + -- Herbert Xu <herbert@debian.org> Sun, 7 Mar 2004 21:50:04 +1100 + +dash (0.4.21) unstable; urgency=low + + * Fixed typo that broke ulimit (GCS, closes: #228369). + + -- Herbert Xu <herbert@debian.org> Mon, 19 Jan 2004 19:02:32 +1100 + +dash (0.4.20) unstable; urgency=low + + * Added Dutch debconf translation (Tim Dijkstra, closes: #218904). + * Check existence RLIMIT symbols for ulimit. + * Removed table lookup in errmsg. + * Restored NULL check in cmdtxt. + * Restored ash postrm to purge debconf entries (closes: #221913). + * Fixed exit status of exit in EXIT trap (closes: #227734). + * Updated Brazilian debconf translation (Andre Luis Lopes, closes: #228095). + * Restored goodname check in prehash. + + -- Herbert Xu <herbert@debian.org> Sat, 17 Jan 2004 09:57:14 +1100 + +dash (0.4.19) unstable; urgency=low + + * Fixed handling of evalskip in dotcmd (closes: #212975). + * Updated Russian debconf translation (Ilgiz Kalmetev, closes: #214333). + * Added Portugese debconf translation (Bruno Rodrigues, closes: #216214). + * Updated Spanish debconf translation (Carlos Valdivia, closes: #216338). + * Fixed length expansion of special variables (closes: #216767). + * Replaced umask builtin with pdksh version. + * Reverted bogus eval change in 0.3.1-20. + * Added vmemory/locks support in ulimit. + * Call install -D instead of cp for merged template. + + -- Herbert Xu <herbert@debian.org> Wed, 29 Oct 2003 22:14:22 +1100 + +dash (0.4.18) unstable; urgency=low + + * Fixed boundary checks in getopts. + * Updated Japanese debconf template (Tomohiro KUBOTA, closes: #192382). + * Use -falign-* instead -malign-*. + * Use strtoll for parsing integers in arith expansion. + * Added support for add-shell/remove-shell (closes: #163131). + * Fixed JOBS ifdefs in sprint_status (closes: #211009). + * Fixed bit-wise or in arith expansion (Mototoshi KONDO, closes: #212825). + * Print PS4 on previous stderr. + * Converted debconf templates to gettext (Christian Perrier, + closes: #200112). + + -- Herbert Xu <herbert@debian.org> Sat, 27 Sep 2003 14:26:36 +1000 + +dash (0.4.17) unstable; urgency=low + + * Reset rehash when recylcing cmd entries. + * Fixed null arg0 segfault with -c (closes: #191687). + * Relocate job pointers in makejob (closes: #191595). + + -- Herbert Xu <herbert@debian.org> Sat, 3 May 2003 20:57:46 +1000 + +dash (0.4.16) unstable; urgency=low + + * Fixed printf so that exit status is cleared on entry. + * Call nextopt() in printf. + * Fixed command substitution corruption by grabbing expdest in expbackq + (closes: #187896). + + -- Herbert Xu <herbert@debian.org> Mon, 7 Apr 2003 21:21:30 +1000 + +dash (0.4.15) unstable; urgency=low + + * Fixed octal escapes in echo/printf (closes: #187827). + + -- Herbert Xu <herbert@debian.org> Sun, 6 Apr 2003 20:45:38 +1000 + +dash (0.4.14) unstable; urgency=low + + * Added missing newline when printing in dowait. + * Do not print status in dowait when stopped. + * Fixed job status display. + * Fixed current job setting. + * Fixed kill segfault with no arguments (closes: #187189). + * Fixed sorting of set output. + * Removed setvar builtin. + + -- Herbert Xu <herbert@debian.org> Thu, 3 Apr 2003 20:38:33 +1000 + +dash (0.4.13) unstable; urgency=low + + * Fixed precision type on 64 bit systems in showvars. + + -- Herbert Xu <herbert@debian.org> Wed, 26 Mar 2003 20:00:03 +1100 + +dash (0.4.12) unstable; urgency=low + + * Fixed dash_errno build problem with gcc 3.2. + + -- Herbert Xu <herbert@debian.org> Tue, 25 Mar 2003 22:28:50 +1100 + +dash (0.4.11) unstable; urgency=low + + * Removed unused pgrp field from job structure. + * Free jobs when calling wait with no arguments. + * Fixed build problem with bison. + * Merged changes from NetBSD 20030123. + . printf: + - Fixed mklong sefault. + - Fixed precision/field width with %b. + . Improved option parsing of command(1). + . Added rudimentary support for PS4. + * Moved builtin flags into builtins.def. + * Updated Spanish debconf template (Carlos Valdivia Yagüe, closes: #178359). + * Fixed ordering of redirection versus assignment substitution. + * Fixed potential setvareq memory leaks. + * Use bison instead of byacc. + * Fixed wait(1) race condition. + * Fixed alignment memory corruption bug in growstackblock(). + * Fixed potential memory corruption in parsing position parameters. + * Fixed getopts done check. + + -- Herbert Xu <herbert@debian.org> Mon, 24 Mar 2003 20:42:29 +1100 + +dash (0.4.10) unstable; urgency=low + + * Fixed redirection fd leak when execing. + + -- Herbert Xu <herbert@debian.org> Sun, 19 Jan 2003 13:25:41 +1100 + +dash (0.4.9) unstable; urgency=low + + * Reset exitstatus in evalsubshell if backgnd is true. + * Fixed glibc glob syntax error in expand.c. + + -- Herbert Xu <herbert@debian.org> Sat, 11 Jan 2003 16:04:02 +1100 + +dash (0.4.8) unstable; urgency=low + + * Removed backgnd flag from ncmd due to previous redirection change. + * Set lim after the stack stablises in updatepwd (closes: #173884). + * Do not clobber the exitstatus after redirection. + + -- Herbert Xu <herbert@debian.org> Mon, 23 Dec 2002 19:50:06 +1100 + +dash (0.4.7) unstable; urgency=low + + * Merged clearredir with reset code in redir.c. + * Redirect before command search in evalcommand (closes: #168862). + * Build binary-all packages in binary-indep (closes: #173191). + + -- Herbert Xu <herbert@debian.org> Sat, 21 Dec 2002 13:52:37 +1100 + +dash (0.4.6) unstable; urgency=low + + * Restored code for leaving job control. + + -- Herbert Xu <herbert@debian.org> Sun, 8 Dec 2002 15:21:58 +1100 + +dash (0.4.5) unstable; urgency=low + + * Optimised doformat so that vsnprintf is usually called only once. + * Reset redirlist in clearredir so that popredir can work (closes: #170247). + + -- Herbert Xu <herbert@debian.org> Sat, 23 Nov 2002 22:09:59 +1100 + +dash (0.4.4) unstable; urgency=low + + * Fixed duplicate define warnings in init.c. + * Set debhelper compat to 4. + * Vanishing mail boxes no longer elicit "you have mail" messages. + * Function redirection errors no longer abort the shell. + * Fixed potential memory leak in redirect. + * Only allocate memory if necessary in redirect. + * Reap dead here documents. + * Do not strdup default values of static shell variables. + * Removed unnecessary setprompt(0) calls. + * Read in BUFSIZ chunks rather than BUFSIZ - 1. + * Documented undefined escape behaviour for echo(1) (closes: #167893). + * Do va_copy when we use a va_list twice (closes: #169503). + + -- Herbert Xu <herbert@debian.org> Wed, 20 Nov 2002 19:48:31 +1100 + +dash (0.4.3) unstable; urgency=low + + * Added manual entry for PPID. + * Exporting an unset variable no longer causes it to be set. + * Fixed fd0 redirection in asynchronous lists. + * Only stat if necessary in cdcmd (see #42880). + * Removed extra newline in error message in arith lexer. + * Set heredoclist to 0 ASAP in parseheredoc. + * Removed BSD advertising clause from copyright file. + * Check non-ash diversions as well in dash.postinst. + * Duplicated diversion checking in ash.postinst (closes: #166441). + + -- Herbert Xu <herbert@debian.org> Sat, 26 Oct 2002 21:28:33 +1000 + +dash (0.4.2) unstable; urgency=low + + * Give benefits of dash in templates (closes: #161527). + * Fixed signed/unsigned on result of xwrite (closes: #161606). + * Removed support for SIG prefixes in kill and trap. + * Added -- processing in trap. + * Dropped use of unset in postinst (closes: 161868). + * Fixed printf(1) %* processing on bad integers and zero. + * Use stat64 in test(1). + * Allocate group_array with stalloc in test(1). + * Disabled alias checking after a pattern in a case statement. + * Wait now returns 128 + last trapped signal. + * Printf now keeps going after errors. + * Empty non-trivial parameter expansions are now removed correctly. + * Call reset() before exitshell() is called. This fixes the bug where + returning an error from a function running under set -e caused the exit + trap to be taken with evalskip set. + * Fixed quoting of empty strings in single_quote(). + * Show line numbers on all errors. + * Function names must be valid identifiers. + * Removed unused dependency on groff. + * Fixed race condition before entering a function. + * Fixed getopts initialisation for functions. + * Added memory barriers in INT macros. + * Banned empty compound lists in most places. + * Keep usage counters on functions (closes: #164234). + * Updated copyright file. + * Check evalskip in evalstring (closes: #165056). + * Merged changes from NetBSD 1.6: + . Added intmax support in printf(1). + . Implemented set -u. + + -- Herbert Xu <herbert@debian.org> Sat, 19 Oct 2002 14:23:11 +1000 + +dash (0.4.1) unstable; urgency=low + + * Removed extra new line in command -v output for aliases. + * Removed alais prefix in the output of alias. + * Recognise octal and hex numbers in arith expansion (closes: #151449). + * Added sh(1) entries for echo, printf and test (closes: #156446). + * Renamed to dash --- the Debian Almquist Shell. + * Cleaned up rules file (Matej Vela). + * Check mtime instead of size in chkmail per POSIX. + * Added support for LFS (closes: #157884). + * Added SuS options to cd and pwd (closes: #145828). + + -- Herbert Xu <herbert@debian.org> Fri, 13 Sep 2002 20:35:06 +1000 + +ash (0.3.8-38) unstable; urgency=low + + * Turned pre-dependency to dependency in udeb since the former is not allowed + (closes: #143749). + + -- Herbert Xu <herbert@debian.org> Sun, 28 Apr 2002 11:59:05 +1000 + +ash (0.3.8-37) unstable; urgency=low + + * Added Japanese debconf translation (Tomohiro KUBOTA, closes: #137431). + * Added missing escapes in manual page (Aaron Schrab, closes: #137966). + * Added Russian debconf translation (Ilgiz Kalmetev, closes: #137618). + * Fixed trap(1) documentation (closes: #140973). + * Do not abort if getcwd fails. + + -- Herbert Xu <herbert@debian.org> Wed, 3 Apr 2002 20:58:09 +1000 + +ash (0.3.8-36) unstable; urgency=low + + * Added library dependency for ash-udeb. + * Handle null case statements correctly. + * Fixed alias expansions in case statements (NetBSD). + * Disabled unused jobid command. + * Corrected documentation about shifting too much. + * Added French debconf translation (Denis Barbier, closes: #134625). + * Updated Spanish debconf translation (Carlos Valdivia, closes: #136366). + + -- Herbert Xu <herbert@debian.org> Sat, 2 Mar 2002 18:31:22 +1100 + +ash (0.3.8-35) unstable; urgency=low + + * Moved PWD initialisation into var.c (closes: #124032). + + -- Herbert Xu <herbert@debian.org> Mon, 24 Dec 2001 09:34:55 +1100 + +ash (0.3.8-34) unstable; urgency=low + + * NSEMI must be NOR + 1. + * Set exitstatus to zero before evaluating cases (closes: #124066). + * Explicitly set default answer of the ash/sh question to false so that + people whose debconf priority is set to low and who keeps banging on their + keyboards don't accidently end up with ash as /bin/sh. + + -- Herbert Xu <herbert@debian.org> Fri, 21 Dec 2001 20:30:49 +1100 + +ash (0.3.8-33) unstable; urgency=low + + * Added missing inclusion of bltin.h in bltin/times.c. + + -- Herbert Xu <herbert@debian.org> Thu, 13 Dec 2001 18:46:07 +1100 + +ash (0.3.8-32) unstable; urgency=low + + * Back slashes in expansions are now escaped (closes: #121516). + + -- Herbert Xu <herbert@debian.org> Wed, 28 Nov 2001 20:15:01 +1100 + +ash (0.3.8-31) unstable; urgency=low + + * Made sure all back slashes are escaped. + + -- Herbert Xu <herbert@debian.org> Mon, 26 Nov 2001 19:10:27 +1100 + +ash (0.3.8-30) unstable; urgency=low + + * Restored fnmatch(3) code. + * Treat escaped slashes correctly while globbing. + * Restored missing EV_EXIT check in evalcommand (closes: #120364). + * Fixed stack corruption in _rmescapes. + + -- Herbert Xu <herbert@debian.org> Sun, 25 Nov 2001 17:51:19 +1100 + +ash (0.3.8-29) unstable; urgency=low + + * Added missing va_end in fmtstr (NetBSD). + * Removed shellproc crap. + * Updated Swedish debconf translation (Mikael Hedin, closes: #116097). + * Updated German debconf translation (Andreas Metzler, closes: #117160). + * Break now treats illegal numbers according to SuS. + * Errors in special builtins now rise to the top. + * Normal redirection errors no longer abort the shell. + * Functions now have the same variable assignment properties as special + builtins. + + -- Herbert Xu <herbert@debian.org> Sat, 3 Nov 2001 11:36:36 +1100 + +ash (0.3.8-28) unstable; urgency=low + + * Local variables are now unset properly in shprocvar() (closes: #114917). + + -- Herbert Xu <herbert@debian.org> Sat, 13 Oct 2001 14:07:21 +1000 + +ash (0.3.8-27) unstable; urgency=low + + * Kill no longer aborts if it fails to kill someone. + + -- Herbert Xu <herbert@debian.org> Sun, 30 Sep 2001 22:20:36 +1000 + +ash (0.3.8-26) unstable; urgency=low + + * The sh.1.gz diversion now agrees with reality (closes: #113831). + + -- Herbert Xu <herbert@debian.org> Sat, 29 Sep 2001 08:43:27 +1000 + +ash (0.3.8-25) unstable; urgency=low + + * Only read ENV if the shell is interactive (closes: #110421). + + -- Herbert Xu <herbert@debian.org> Wed, 29 Aug 2001 19:18:53 +1000 + +ash (0.3.8-24) unstable; urgency=low + + * Handle SIGINT when waiting even if there is no trap (closes: #107699). + * Protect all makejob/forkshell/waitforjobs sequences from SIGINT. + * Work around gcc bug that generates bad ..ng references (closes: #107994). + + -- Herbert Xu <herbert@debian.org> Wed, 8 Aug 2001 20:28:28 +1000 + +ash (0.3.8-23) unstable; urgency=low + + * Fixed fence post error in scanleft (closes: #107229). + * Removed stunalloc in expname as it interferes with addfname. + * Fixed CTLESC skipping in scanright. + + -- Herbert Xu <herbert@debian.org> Thu, 2 Aug 2001 20:06:00 +1000 + +ash (0.3.8-22) unstable; urgency=low + + * Fixed trailing back slash bug in echo/printf (closes: #106693). + * Some quoted's are meant to be quotes. + * Added Brazilian translation (Andre Luis Lopes, closes: #107041). + + -- Herbert Xu <herbert@debian.org> Mon, 30 Jul 2001 20:21:52 +1000 + +ash (0.3.8-21) unstable; urgency=low + + * Fixed EV_EXIT/redirection bugs that caused core dumps. + + -- Herbert Xu <herbert@debian.org> Sat, 28 Jul 2001 17:03:28 +1000 + +ash (0.3.8-20) unstable; urgency=low + + * Don't save fd2 if job control is turned off. + * Don't push redirections when EV_EXIT is set. + * Fixed assignment recognition in the presence of back ticks. + * Combined checkkwd and checkalias. + + -- Herbert Xu <herbert@debian.org> Fri, 27 Jul 2001 22:29:41 +1000 + +ash (0.3.8-19) unstable; urgency=low + + * Recompute strings after growing in subevalvar (closes: #106050). + + -- Herbert Xu <herbert@debian.org> Mon, 23 Jul 2001 21:16:50 +1000 + +ash (0.3.8-18) unstable; urgency=low + + * Added more space optimisations for udeb on i386. + * Set stack mark in patmatch (closes: #106050). + * Fixed theoretical bug in expari. + + -- Herbert Xu <herbert@debian.org> Sat, 21 Jul 2001 20:08:15 +1000 + +ash (0.3.8-17) unstable; urgency=low + + * Don't complain about unknown escape codes in echo and printf + (closes: #105659). + * Updated build-time dependency on groff-base (closes: #105612). + + -- Herbert Xu <herbert@debian.org> Wed, 18 Jul 2001 19:33:20 +1000 + +ash (0.3.8-16) unstable; urgency=low + + * Fixed backslash bug in new pattern matching code. + + -- Herbert Xu <herbert@debian.org> Mon, 16 Jul 2001 21:47:39 +1000 + +ash (0.3.8-15) unstable; urgency=low + + * Added Swedish translation of templates (Martin Sjögren, closes: #103158). + * Restored escape code support in echo. + * Removed assignment builtins since it is at best undefined by the SuS and + also can't be implemented consistently. + * Removed extraneous volatile modifier (closes: #104518). + * General overhaul of word expansion (closes: #96588). + * Redirection prefixes no longer stop assignments from being recognised. + + -- Herbert Xu <herbert@debian.org> Sun, 15 Jul 2001 17:27:03 +1000 + +ash (0.3.8-14) unstable; urgency=low + + * Divert sh.1.gz to sh.distrib.1.gz (closes: #102251). + * Added HETIO support for ^D and ^U (Aaron Lehmann, closes: #102215). + * Added Spaniash translation of debconf templates (Carlos Valdivia Yagüe, + closes: #103040). + * Added versioned build-time dependency on groff. + + -- Herbert Xu <herbert@debian.org> Mon, 2 Jul 2001 19:32:03 +1000 + +ash (0.3.8-13) unstable; urgency=low + + * Fixed a bug where errors in pipelines which are part of andor lists were + not ignored when -e is in effect. + + -- Herbert Xu <herbert@debian.org> Mon, 25 Jun 2001 19:40:27 +1000 + +ash (0.3.8-12) unstable; urgency=low + + * Rewrote arith_lex.l in C (Aaron Lehmann, closes: #101741). + * && and || in arithmetic expansions now return either 0 or 1. + + -- Herbert Xu <herbert@debian.org> Sun, 24 Jun 2001 20:14:29 +1000 + +ash (0.3.8-11) unstable; urgency=low + + * Check for NULL argument in evaltree() (closes: #98865, #98867). + + -- Herbert Xu <herbert@debian.org> Sun, 27 May 2001 17:53:14 +1000 + +ash (0.3.8-10) unstable; urgency=low + + * Use /bin/ash in postinst to sidestep bugs in other shells (closes: #98739). + * Exit status is now tested on non-negated pipelines (closes: #98736). + + -- Herbert Xu <herbert@debian.org> Sat, 26 May 2001 23:56:07 +1000 + +ash (0.3.8-9) unstable; urgency=medium + + * IFS is now fetched using bltinlookup() again in read (closes: #98343). + * Divert sh(1) man page as well as /bin/sh (closes: #98525). + + -- Herbert Xu <herbert@debian.org> Fri, 25 May 2001 20:30:06 +1000 + +ash (0.3.8-8) unstable; urgency=low + + * Fixed diversion removal in prerm (duh, closes: #98031). + + -- Herbert Xu <herbert@debian.org> Mon, 21 May 2001 20:52:48 +1000 + +ash (0.3.8-7) unstable; urgency=low + + * Fixed diversion test in prerm (closes: #98031). + + -- Herbert Xu <herbert@debian.org> Sun, 20 May 2001 12:30:53 +1000 + +ash (0.3.8-6) unstable; urgency=low + + * Make sure that fd2 is closed when clearing redirects (closes: #96619). + * Fixed memory corruption in stunalloc(). + * The output of export/readonly/set is now correctly quoted. + * Fixed newline eating bug in expbackq(). + * Set OLDPWD. + * Removed ash-medium as neither bf or di uses it. + * Wait now waits for all its argument rather than the first one. + * Wait will exit with 129 when interrupted by a signal for a which a trap has + been set. + + -- Herbert Xu <herbert@debian.org> Fri, 18 May 2001 21:51:41 +1000 + +ash (0.3.8-5) unstable; urgency=low + + * Added German translation to template file (Sebastian Feltel, + closes: #96203). + * Added missing initialisation in setalias() (closes: #95433). + + -- Herbert Xu <herbert@debian.org> Fri, 4 May 2001 20:54:31 +1000 + +ash (0.3.8-4) unstable; urgency=low + + * Disabled fnmatch code as fnmatch(3) in glibc is broken. + * Fixed echo example in man page (Kalle Olavi Niemitalo, closes: #96014). + * Fixed trailing semicolon bug with eval (NetBSD). + * Fixed globbing inconsistency with broken symlinks (NetBSD). + + -- Herbert Xu <herbert@debian.org> Wed, 2 May 2001 22:57:16 +1000 + +ash (0.3.8-3) unstable; urgency=low + + * Work around broken autoconf scripts (closes: #95430). + + -- Herbert Xu <herbert@debian.org> Tue, 1 May 2001 18:27:50 +1000 + +ash (0.3.8-2) unstable; urgency=low + + * Save checkalias before calling xxreadtoken() (closes: #95628). + + -- Herbert Xu <herbert@debian.org> Sun, 29 Apr 2001 17:36:01 +1000 + +ash (0.3.8-1) unstable; urgency=low + + * NetBSD-current version as of 20010316. + * Removed code that sets IFS. + * Fixed memory leak with PWD. + * Set PPID. + * Fixed inconsistencies in alias expansion. + * Restored original output code. + * Enabled fnmatch code again. + * Added builtin printf. + * Offer to divert /bin/sh (closes: #70462). + + -- Herbert Xu <herbert@debian.org> Wed, 25 Apr 2001 22:32:39 +1000 + +ash (0.3.7-16) unstable; urgency=low + + * Fixed incorrect default IFS in readcmd (closes: #88950). + * Added missing return in hashcmd. + + -- Herbert Xu <herbert@debian.org> Fri, 9 Mar 2001 20:44:40 +1100 + +ash (0.3.7-15) unstable; urgency=low + + * Unknown escape codes are now prnted literally by echo (closes: #82869). + * Made hetio_read_input() fail if fd is not stdin. + * Some uses of VSQUOTE were really meant to be quotes (closes: #88777). + * Build different ashes in different subdirectories. + + -- Herbert Xu <herbert@debian.org> Thu, 8 Mar 2001 21:32:28 +1100 + +ash (0.3.7-14) unstable; urgency=low + + * Removed predependency from udeb (closes: #81995). + * Added /bin/sh symlink to udeb (closes: #81967). + + -- Herbert Xu <herbert@debian.org> Sat, 13 Jan 2001 15:23:21 +1100 + +ash (0.3.7-13) unstable; urgency=low + + * Renamed the udeb to ash-udeb. + + -- Herbert Xu <herbert@debian.org> Wed, 20 Dec 2000 19:32:34 +1100 + +ash (0.3.7-12) unstable; urgency=low + + * Added support for udebs (Randolph Chung, closes: #79237). + + -- Herbert Xu <herbert@debian.org> Sat, 16 Dec 2000 13:53:28 +1100 + +ash (0.3.7-11) unstable; urgency=low + + * Preserve the previous exit status upon entering a function + (closes: #78374). + + -- Herbert Xu <herbert@debian.org> Sun, 3 Dec 2000 13:34:27 +1100 + +ash (0.3.7-10) unstable; urgency=low + + * Merged changes for GNU from Igor Khavkine. + * Minimise the number of sigactions. + + -- Herbert Xu <herbert@debian.org> Fri, 3 Nov 2000 20:31:52 +1100 + +ash (0.3.7-9) unstable; urgency=low + + * Predepend on the libraries. + * Always save fd 2 when it is redirected (closes: #75302). + + -- Herbert Xu <herbert@debian.org> Sun, 22 Oct 2000 08:40:40 +1100 + +ash (0.3.7-8) unstable; urgency=high + + * More redirection fixes (closes: #73613). + + -- Herbert Xu <herbert@debian.org> Thu, 5 Oct 2000 18:22:17 +1100 + +ash (0.3.7-7) unstable; urgency=high + + * Added missing break in redirection code (closes: #72956). + + -- Herbert Xu <herbert@debian.org> Tue, 3 Oct 2000 07:58:04 +1100 + +ash (0.3.7-6) unstable; urgency=low + + * command -[vV] no longer displays an error message on stdout. + * Redirecting to /proc/self/fd/* now works (closes: #72852). + + -- Herbert Xu <herbert@debian.org> Sun, 1 Oct 2000 12:56:39 +1100 + +ash (0.3.7-5) unstable; urgency=low + + * Implemented set -a. + + -- Herbert Xu <herbert@debian.org> Sat, 30 Sep 2000 16:00:33 +1100 + +ash (0.3.7-4) unstable; urgency=low + + * Added build-time dependency on debhelper (closes: #69920). + * Extended maximum length of arithmetic expansions to match 32-bit integers. + + -- Herbert Xu <herbert@debian.org> Wed, 20 Sep 2000 14:28:16 +1100 + +ash (0.3.7-3) unstable; urgency=low + + * Switch to the old globbing code since glob(3) is hopelessly broken + (closes: #69455). + + -- Herbert Xu <herbert@debian.org> Mon, 21 Aug 2000 20:37:15 +1000 + +ash (0.3.7-2) unstable; urgency=low + + * Call glob(3) with GLOB_NOMAGIC (ouch). + + -- Herbert Xu <herbert@debian.org> Sun, 6 Aug 2000 17:47:08 +1000 + +ash (0.3.7-1) unstable; urgency=low + + * NetBSD-current version as of 20000729. + * Use fnmatch(3) and glob(3). + * Fixed the use of backslashes in the pattern in parameter substitutions, + hopefully for the last time. + * Applied HETIO patch and built ash.medium (closes: #50788). Will do ash.big + when readline is fixed so that it doesn't leak anymore. + + -- Herbert Xu <herbert@debian.org> Fri, 4 Aug 2000 21:36:44 +1000 + +ash (0.3.6-5) unstable; urgency=low + + * Fixed manpage entry for read with patch from Kevin Ryde (closes: #62500). + * Fixed a file descriptor leak for pipelines. + + -- Herbert Xu <herbert@debian.org> Wed, 19 Apr 2000 18:56:20 +1000 + +ash (0.3.6-4) unstable; urgency=low + + * Fixed the case of an empty command with redirections. + + -- Herbert Xu <herbert@debian.org> Fri, 7 Apr 2000 12:07:18 +1000 + +ash (0.3.6-3) unstable; urgency=low + + * ! is now recognised correctly. + * Ash is now more strict on the syntax, e.g., a lone ! is no longer accepted + as an alternative to ! true. + + -- Herbert Xu <herbert@debian.org> Fri, 7 Apr 2000 10:46:06 +1000 + +ash (0.3.6-2) unstable; urgency=low + + * Fixed a problem with fmtstr() which broke getopts. + + -- Herbert Xu <herbert@debian.org> Sun, 2 Apr 2000 10:49:26 +1000 + +ash (0.3.6-1) unstable; urgency=low + + * NetBSD-current version as of 20000326. + * Added a Build-Depends on groff (closes: #61041). + * Implemented noclobber (closes: #59028). + * Rewrote output.c to use stream IO. + + -- Herbert Xu <herbert@debian.org> Sat, 1 Apr 2000 19:24:31 +1000 + +ash (0.3.5-10) frozen unstable; urgency=low + + * Don't stat mail boxes in non-interactive mode (closes: #59213). + * Added an fflush(stdout) to the times builtin (closes: #59027). + * Documented the times builtin. + * Added source depends. + + -- Herbert Xu <herbert@debian.org> Sat, 18 Mar 2000 18:58:44 +1100 + +ash (0.3.5-9) unstable; urgency=low + + * Double quotes inside paramater substitutions inside double quotes are now + ignored as in bash (the originial behaviour was POSIX compliant too but + IMHO this one makes a little bit more sense). + This one broke mwm (but it was actually mwm's fault). + * Corrected backslash/CTLESC treatment for patterns in parameter + substitutions. + + -- Herbert Xu <herbert@debian.org> Sat, 6 Nov 1999 18:13:19 +1100 + +ash (0.3.5-8) unstable; urgency=low + + * Replaced use of echo -n in manual page with escape codes. + * Made FHS compliant (closes: #47978). + * Restored echo's option processing ability. + + -- Herbert Xu <herbert@debian.org> Fri, 22 Oct 1999 10:20:58 +1000 + +ash (0.3.5-7) unstable; urgency=low + + * echo no longer supports options. + * Don't quote patterns inside parameter substitutions enclosed by double + quotes (closes: #47842). + + -- Herbert Xu <herbert@debian.org> Wed, 20 Oct 1999 20:28:14 +1000 + +ash (0.3.5-6) unstable; urgency=low + + * Use getcwd() instead of /bin/pwd -- Zack Weinberg (closes: #46981). + + -- Herbert Xu <herbert@debian.org> Sun, 10 Oct 1999 16:31:49 +1000 + +ash (0.3.5-5) unstable; urgency=low + + * Only test for -e on simple commands (fixes #44559). + + -- Herbert Xu <herbert@debian.org> Wed, 8 Sep 1999 22:18:27 +1000 + +ash (0.3.5-4) unstable; urgency=low + + * Don't wait for stopped children if job control is disabled (fixes #42814). + * Allow an option '(' in a case statement (fixes #42364). + + -- Herbert Xu <herbert@debian.org> Thu, 12 Aug 1999 23:30:30 +1000 + +ash (0.3.5-3) unstable; urgency=low + + * OK, the fix to the esoteric problem in 0.3.5-1 actually breaks VSASSIGN + and VSQUESTION, they should work properly now (fixes #41327). + + -- Herbert Xu <herbert@debian.org> Thu, 15 Jul 1999 22:47:13 +1000 + +ash (0.3.5-2) unstable; urgency=low + + * PATH search and execution is now correct. + * hash no longer shows builtins. + * Added kill builtin. + * New description from James R. van Zandt reformatted by Josip Rodin. + + -- Herbert Xu <herbert@debian.org> Mon, 12 Jul 1999 18:51:42 +1000 + +ash (0.3.5-1) unstable; urgency=low + + * New upstream release. + * Adapted to new pmake (fixes #38737). + * Fixed behvaiour of backslashes preceding a closing brace for a parameter + substituion inside double quotes (even bash messes this one up :). + * Fixed command (fixes #34639). + * Fixed a pipe bug where stdin may be wrongly closed (fixes #35452). + * Revamped getopts (fixes #39694). + + -- Herbert Xu <herbert@debian.org> Sun, 4 Jul 1999 12:19:01 +1000 + +ash (0.3.4-7) unstable; urgency=low + + * Fixed a glibc 2.1 compatitibility problem. + * Fixed a PWD inconsistency that stuffed up the kernel compilation. + + -- Herbert Xu <herbert@debian.org> Mon, 17 May 1999 23:14:57 +1000 + +ash (0.3.4-6) unstable; urgency=low + + * Fixed incorrect -e test due to the last bug fix (fixes #26509). + + -- Herbert Xu <herbert@debian.org> Tue, 8 Sep 1998 10:02:46 +1000 + +ash (0.3.4-5) unstable; urgency=low + + * Use test_eaccess from bash instead of access(2) (fixes #26110). + + -- Herbert Xu <herbert@debian.org> Wed, 26 Aug 1998 21:22:49 +1000 + +ash (0.3.4-4) unstable; urgency=low + + * Only upload to unstable. + + -- Herbert Xu <herbert@debian.org> Tue, 5 May 1998 18:01:02 +1000 + +ash (0.3.4-3) frozen unstable; urgency=low + + * Applied sparc patch (fixes #21562). + + -- Herbert Xu <herbert@debian.org> Fri, 1 May 1998 19:48:13 +1000 + +ash (0.3.4-2) frozen unstable; urgency=low + + * Fixed the incorrect trap fixes (fixes #20363). + + -- Herbert Xu <herbert@debian.org> Thu, 16 Apr 1998 21:07:10 +1000 + +ash (0.3.4-1) unstable; urgency=low + + * New upstream release. + * Reverted word splitting change in 0.3.2-1 since the fix was broken and + major work (the quote removal is done too quickly at the moment) is needed + to fix it properly. + * Fixed more trap noncompliance. + + -- Herbert Xu <herbert@debian.org> Thu, 19 Mar 1998 22:59:12 +1100 + +ash (0.3.2-5) unstable; urgency=low + + * Fixed a bug when doing pattern matching in parameter expansions. + + -- Herbert Xu <herbert@debian.org> Tue, 10 Mar 1998 21:25:40 +1100 + +ash (0.3.2-4) unstable; urgency=low + + * Allow ] to be quoted in bracket expressions (fixes #17533). + * Move dh_fixperms to second last spot (fixes #18267). + * Don't do field splitting in evalfor. + + -- Herbert Xu <herbert@debian.org> Tue, 17 Feb 1998 13:32:09 +1100 + +ash (0.3.2-3) unstable; urgency=low + + * Fixed stupid core dump. + + -- Herbert Xu <herbert@debian.org> Wed, 11 Feb 1998 21:33:55 +1100 + +ash (0.3.2-2) unstable; urgency=low + + * Hack for special builtins (fixes #18055). + * Hack for command. + + -- Herbert Xu <herbert@debian.org> Wed, 11 Feb 1998 21:19:46 +1100 + +ash (0.3.2-1) unstable; urgency=low + + * NetBSD-current version as of 19980209. + * Fixed a word splitting problem after parameter expansion thanks to Alexey + Marinichev. + * Converted to debhelper (fixes #14612, #15005). + + -- Herbert Xu <herbert@debian.org> Mon, 9 Feb 1998 16:53:48 +1100 + +ash (0.3.1-20) unstable; urgency=low + + * Fixed -e problem with eval. + + -- Herbert Xu <herbert@debian.org> Sun, 7 Dec 1997 20:19:00 +1100 + +ash (0.3.1-19) unstable; urgency=low + + * Fixed -e problem with command substitution. + + -- Herbert Xu <herbert@debian.org> Sun, 7 Dec 1997 19:44:49 +1100 + +ash (0.3.1-18) unstable; urgency=low + + * Do not link with ncurses (#15485). + + -- Herbert Xu <herbert@debian.org> Sun, 30 Nov 1997 12:00:11 +1100 + +ash (0.3.1-17) unstable; urgency=low + + * Set PATH like bash (#15238). + + -- Herbert Xu <herbert@debian.org> Wed, 26 Nov 1997 16:17:27 +1100 + +ash (0.3.1-16) unstable; urgency=low + + * Fixed incorrect assignment builtin code. + + -- Herbert Xu <herbert@debian.org> Mon, 24 Nov 1997 16:19:10 +1100 + +ash (0.3.1-15) unstable; urgency=low + + * hash now returns error codes (needed by the Linux kernel). + + -- Herbert Xu <herbert@debian.org> Sun, 23 Nov 1997 21:37:08 +1100 + +ash (0.3.1-14) unstable; urgency=low + + * Disabled word-splitting for assignment builtins. + + -- Herbert Xu <herbert@debian.org> Sun, 23 Nov 1997 12:45:15 +1100 + +ash (0.3.1-13) unstable; urgency=low + + * ! is now recognised even after &&/||. + + -- Herbert Xu <herbert@debian.org> Fri, 21 Nov 1997 22:09:05 +1100 + +ash (0.3.1-12) unstable; urgency=low + + * More fixes to the handling of SIGINT when forking. + + -- Herbert Xu <herbert@debian.org> Fri, 14 Nov 1997 15:14:32 +1100 + +ash (0.3.1-11) unstable; urgency=low + + * Ignore SIGINT when forking non-interactively. + + -- Herbert Xu <herbert@debian.org> Mon, 3 Nov 1997 12:00:02 +1100 + +ash (0.3.1-10) unstable; urgency=low + + * echo now handles options correctly. + * echo nolonger returns 0 if erorrs occured while writing to stdout. + * New code from GNU echo merged. + * Error messages from test now work. + + -- Herbert Xu <herbert@debian.org> Wed, 8 Oct 1997 21:47:13 +1000 + +ash (0.3.1-9) unstable; urgency=low + + * ! is recognised at pipeline level like bash. + + -- Herbert Xu <herbert@debian.org> Mon, 15 Sep 1997 23:13:45 +1000 + +ash (0.3.1-8) unstable; urgency=medium + + * Old patch regarding SIGCHLD in again. + + -- Herbert Xu <herbert@debian.org> Sun, 31 Aug 1997 11:20:27 +1000 + +ash (0.3.1-7) unstable; urgency=low + + * /bin/sh -e is behaving even better now (for loops within conditionals). + + -- Herbert Xu <herbert@debian.org> Sat, 23 Aug 1997 22:08:19 +1000 + +ash (0.3.1-6) unstable; urgency=low + + * /bin/sh -e is behaving better now. + + -- Herbert Xu <herbert@debian.org> Sat, 23 Aug 1997 13:16:26 +1000 + +ash (0.3.1-5) unstable; urgency=low + + * hash -v /dir/command doesn't coredump anymore. + * type /dir/command now works correctly. + + -- Herbert Xu <herbert@debian.org> Fri, 1 Aug 1997 20:48:19 +1000 + +ash (0.3.1-4) unstable; urgency=low + + * trap now understands symbolic signal names. + + -- Herbert Xu <herbert@debian.org> Sat, 26 Jul 1997 14:04:46 +1000 + +ash (0.3.1-3) unstable; urgency=low + + * Added the builtin test command. + + -- Herbert Xu <herbert@debian.org> Sun, 20 Jul 1997 15:00:14 +1000 + +ash (0.3.1-2) unstable; urgency=medium + + * Fixed a coredump involving $*. + + -- Herbert Xu <herbert@debian.org> Sat, 19 Jul 1997 12:03:02 +1000 + +ash (0.3.1-1) unstable; urgency=medium + + * NetBSD-current version as of 19970715. + * Fixed a "use after free" bug (#11294). + + -- Herbert Xu <herbert@debian.org> Fri, 18 Jul 1997 13:48:09 +1000 + +ash (0.3-1) unstable; urgency=low + + * Initial Release. + + -- Herbert Xu <herbert@debian.org> Thu, 19 Jun 1997 19:29:16 +1000 + diff --git a/bin/dash/Makefile.am b/bin/dash/Makefile.am new file mode 100644 index 00000000..af437a64 --- /dev/null +++ b/bin/dash/Makefile.am @@ -0,0 +1 @@ +SUBDIRS = src diff --git a/bin/dash/autogen.sh b/bin/dash/autogen.sh new file mode 100755 index 00000000..9879c53e --- /dev/null +++ b/bin/dash/autogen.sh @@ -0,0 +1,6 @@ +#!/bin/sh + +aclocal \ +&& autoheader \ +&& automake --add-missing \ +&& autoconf diff --git a/bin/dash/configure.ac b/bin/dash/configure.ac new file mode 100644 index 00000000..1edc45b8 --- /dev/null +++ b/bin/dash/configure.ac @@ -0,0 +1,194 @@ +AC_INIT([dash],[0.5.11.2]) +AM_INIT_AUTOMAKE([foreign subdir-objects]) +AC_CONFIG_SRCDIR([src/main.c]) + +AC_CONFIG_HEADERS(config.h) + +m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES(yes)]) + +dnl Checks for programs. +AC_PROG_CC +AC_USE_SYSTEM_EXTENSIONS + +AC_MSG_CHECKING([for build system compiler]) +if test "$cross_compiling" = yes; then + CC_FOR_BUILD=${CC_FOR_BUILD-cc} +else + CC_FOR_BUILD=${CC} +fi +AC_MSG_RESULT(${CC_FOR_BUILD}) +AC_SUBST(CC_FOR_BUILD) + +AC_MSG_CHECKING([for __attribute__((__alias__()))]) +dash_cv_have_attribute_alias=no +AC_LINK_IFELSE([AC_LANG_PROGRAM([void t() {} + void a() __attribute__((__alias__("t")));], + [a();])], + [dash_cv_have_attribute_alias=yes]) +AC_MSG_RESULT($dash_cv_have_attribute_alias) +if test "x$dash_cv_have_attribute_alias" = xyes; then + AC_DEFINE([HAVE_ALIAS_ATTRIBUTE], 1, + [Define if __attribute__((__alias__())) is supported]) +fi + +AC_ARG_ENABLE(static, AS_HELP_STRING(--enable-static, \ + [Build statical linked program])) +if test "$enable_static" = "yes"; then + export LDFLAGS="-static -Wl,--fatal-warnings" +fi + +AC_ARG_ENABLE(fnmatch, AS_HELP_STRING(--enable-fnmatch, \ + [Use fnmatch(3) from libc])) +AC_ARG_ENABLE(glob, AS_HELP_STRING(--enable-glob, [Use glob(3) from libc])) + +dnl Checks for libraries. + +dnl Checks for header files. +AC_CHECK_HEADERS(alloca.h paths.h) + +dnl Check for declarations +AC_CHECK_DECL([_PATH_BSHELL],,AC_DEFINE_UNQUOTED([_PATH_BSHELL], "/bin/sh", [Define to system shell path]),[ +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif +]) +AC_CHECK_DECL([_PATH_DEVNULL],,AC_DEFINE_UNQUOTED([_PATH_DEVNULL], "/dev/null", [Define to devnull device node path]),[ +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif +]) +AC_CHECK_DECL([_PATH_TTY],,AC_DEFINE_UNQUOTED([_PATH_TTY], "/dev/tty", [Define to tty device node path]),[ +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif +]) + +dnl Some systems lack isblank +AC_CHECK_DECLS([isblank],,,[#include <ctype.h>]) + +dnl Check for sizes of types +AC_CHECK_SIZEOF([intmax_t]) +AC_CHECK_SIZEOF([long long int]) + +dnl Select a fallback format string for intmax_t in case we don't find PRIdMAX +if test "x$ac_cv_sizeof_intmax_t" = "x$ac_cv_sizeof_long_long_int"; then + intmax_fstr="lld" +else + intmax_fstr="jd" +fi + +dnl Check for PRIdMAX and define it to a fallback if not found +AC_CHECK_DECL([PRIdMAX],, + [AC_DEFINE_UNQUOTED([PRIdMAX], "$intmax_fstr", + [Define to printf format string for intmax_t])], + [ +#include <inttypes.h> +]) + +dnl Checks for library functions. +AC_CHECK_FUNCS(bsearch faccessat getpwnam getrlimit isalpha killpg \ + mempcpy \ + sigsetmask stpcpy strchrnul strsignal strtod strtoimax \ + strtoumax sysconf) + +dnl Check whether it's worth working around FreeBSD PR kern/125009. +dnl The traditional behavior of access/faccessat is crazy, but +dnl POSIX.1-2008 explicitly allows those functions to misbehave. +dnl +dnl Unaffected kernels: +dnl +dnl - all versions of Linux +dnl - NetBSD sys/kern/vfs_subr.c 1.64, 1997-04-23 +dnl - FreeBSD 9 (r212002), 2010-09-10 +dnl - OpenBSD sys/kern/vfs_subr.c 1.166, 2008-06-09 +dnl +dnl Also worked around in Debian's libc0.1 2.13-19 when using +dnl kFreeBSD 8. + +AC_ARG_ENABLE(test-workaround, AS_HELP_STRING(--enable-test-workaround, \ + [Guard against faccessat(2) that tells root all files are executable]),, + [enable_test_workaround=auto]) + +if test "enable_test_workaround" = "auto" && + test "$ac_cv_func_faccessat" = yes; then + case `uname -s 2>/dev/null` in + GNU/kFreeBSD | \ + FreeBSD) + enable_test_workaround=yes + esac +fi +if test "$enable_test_workaround" = "yes"; then + AC_DEFINE([HAVE_TRADITIONAL_FACCESSAT], [1], + [Define if your faccessat tells root all files are executable]) +fi + +if test "$enable_fnmatch" = yes; then + use_fnmatch= + AC_CHECK_FUNCS(fnmatch, use_fnmatch=yes) +fi + +if test "$use_fnmatch" = yes && test "$enable_glob" = yes; then + AC_CHECK_FUNCS(glob) +fi + +dnl Check for klibc signal. +AC_CHECK_FUNC(signal) +if test "$ac_cv_func_signal" != yes; then + AC_CHECK_FUNC(bsd_signal, + [AC_DEFINE(signal, bsd_signal, + [klibc has bsd_signal instead of signal])]) +fi + +dnl Check for stat64 (dietlibc/klibc). +AC_CHECK_FUNC(stat64,, [ + AC_DEFINE(fstat64, fstat, [64-bit operations are the same as 32-bit]) + AC_DEFINE(lstat64, lstat, [64-bit operations are the same as 32-bit]) + AC_DEFINE(stat64, stat, [64-bit operations are the same as 32-bit]) +]) + +dnl OS X apparently has stat64 but not open64. +AC_CHECK_FUNC(open64,, [ + AC_DEFINE(open64, open, [64-bit operations are the same as 32-bit]) + AC_DEFINE(readdir64, readdir, + [64-bit operations are the same as 32-bit]) + AC_DEFINE(dirent64, dirent, + [64-bit operations are the same as 32-bit]) +]) + +dnl Check if struct stat has st_mtim. +AC_MSG_CHECKING(for stat::st_mtim) +AC_COMPILE_IFELSE( +[AC_LANG_PROGRAM([#include <time.h> +#include <sys/time.h> +#include <sys/stat.h>], +[struct stat foo; return sizeof(foo.st_mtim.tv_sec)])], +have_st_mtim=yes, have_st_mtim=no) +AC_MSG_RESULT($have_st_mtim) +if test "$have_st_mtim" = "yes"; then + AC_DEFINE([HAVE_ST_MTIM], [1], + [Define if your `struct stat' has `st_mtim']) +fi + +AC_ARG_WITH(libedit, + AS_HELP_STRING(--without-libedit, [Compile without libedit support])) +use_libedit= +if test "$with_libedit" != "no"; then + AC_CHECK_LIB(edit, history_init, [ + AC_CHECK_HEADER([histedit.h], [use_libedit="yes"], + AC_MSG_ERROR( + [Can't find required header files.]))], [ + AC_MSG_ERROR([Can't find libedit.])]) +fi +if test "$use_libedit" != "yes"; then + AC_DEFINE([SMALL], 1, [Define if you build with -DSMALL]) +else + export LIBS="$LIBS -ledit" + AC_CHECK_FUNCS(_el_fn_sh_complete) +fi +AC_ARG_ENABLE(lineno, AS_HELP_STRING(--disable-lineno, \ + [Disable LINENO support])) +if test "$enable_lineno" != "no"; then + AC_DEFINE([WITH_LINENO], 1, [Define if you build with -DWITH_LINENO]) +fi +AC_CONFIG_FILES([Makefile src/Makefile]) +AC_OUTPUT diff --git a/bin/dash/src/.gitignore b/bin/dash/src/.gitignore new file mode 100644 index 00000000..644eccb8 --- /dev/null +++ b/bin/dash/src/.gitignore @@ -0,0 +1,13 @@ +*.o +builtins.[ch] +builtins.def +dash +init.c +mkinit +mknodes +mksignames +mksyntax +nodes.[ch] +signames.c +syntax.[ch] +token.h diff --git a/bin/dash/src/Makefile.am b/bin/dash/src/Makefile.am new file mode 100644 index 00000000..fb8229f1 --- /dev/null +++ b/bin/dash/src/Makefile.am @@ -0,0 +1,70 @@ +AM_YFLAGS = -d + +COMMON_CFLAGS = -Wall +COMMON_CPPFLAGS = \ + -DBSD=1 -DSHELL + +AM_CFLAGS = $(COMMON_CFLAGS) +AM_CPPFLAGS = -include $(top_builddir)/config.h $(COMMON_CPPFLAGS) +AM_CFLAGS_FOR_BUILD = -g -O2 $(COMMON_CFLAGS) +AM_CPPFLAGS_FOR_BUILD = $(COMMON_CPPFLAGS) + +COMPILE_FOR_BUILD = \ + $(CC_FOR_BUILD) $(DEFAULT_INCLUDES) $(AM_CPPFLAGS_FOR_BUILD) \ + $(CPPFLAGS_FOR_BUILD) \ + $(AM_CFLAGS_FOR_BUILD) $(CFLAGS_FOR_BUILD) + +bin_PROGRAMS = dash + +dash_CFILES = \ + alias.c arith_yacc.c arith_yylex.c cd.c error.c eval.c exec.c expand.c \ + histedit.c input.c jobs.c mail.c main.c memalloc.c miscbltin.c \ + mystring.c options.c parser.c redir.c show.c trap.c output.c \ + bltin/printf.c system.c bltin/test.c bltin/times.c var.c +dash_SOURCES = \ + $(dash_CFILES) \ + alias.h arith_yacc.h bltin/bltin.h cd.h error.h eval.h exec.h \ + expand.h \ + init.h input.h jobs.h machdep.h mail.h main.h memalloc.h miscbltin.h \ + myhistedit.h mystring.h options.h output.h parser.h redir.h shell.h \ + show.h system.h trap.h var.h +dash_LDADD = builtins.o init.o nodes.o signames.o syntax.o + +HELPERS = mkinit mksyntax mknodes mksignames + +BUILT_SOURCES = builtins.h nodes.h syntax.h token.h token_vars.h +CLEANFILES = \ + $(BUILT_SOURCES) $(dash_LDADD:%.o=%.c) \ + $(HELPERS) builtins.def + +man_MANS = dash.1 +EXTRA_DIST = \ + $(man_MANS) \ + mktokens mkbuiltins builtins.def.in mkinit.c \ + mknodes.c nodetypes nodes.c.pat mksyntax.c mksignames.c + +token.h token_vars.h: mktokens + $(AM_V_GEN)$(SHELL) mktokens + +builtins.def: builtins.def.in $(top_builddir)/config.h + $(AM_V_CC)$(COMPILE) -E -x c -o $@ builtins.def.in + +builtins.c builtins.h: mkbuiltins builtins.def + $(AM_V_GEN)$(SHELL) mkbuiltins builtins.def + +init.c: mkinit $(dash_CFILES) + $(AM_V_GEN)./mkinit $(dash_CFILES) + +nodes.c nodes.h: mknodes nodetypes nodes.c.pat + $(AM_V_GEN)./mknodes nodetypes nodes.c.pat + +syntax.c syntax.h: mksyntax + $(AM_V_GEN)./mksyntax + +signames.c: mksignames + $(AM_V_GEN)./mksignames + +mksyntax: token.h + +$(HELPERS): + $(AM_V_CC)$(COMPILE_FOR_BUILD) -o $@ $@.c diff --git a/bin/dash/src/TOUR b/bin/dash/src/TOUR new file mode 100644 index 00000000..e30836e1 --- /dev/null +++ b/bin/dash/src/TOUR @@ -0,0 +1,343 @@ +# @(#)TOUR 8.1 (Berkeley) 5/31/93 + +NOTE -- This is the original TOUR paper distributed with ash and +does not represent the current state of the shell. It is provided anyway +since it provides helpful information for how the shell is structured, +but be warned that things have changed -- the current shell is +still under development. + +================================================================ + + A Tour through Ash + + Copyright 1989 by Kenneth Almquist. + + +DIRECTORIES: The subdirectory bltin contains commands which can +be compiled stand-alone. The rest of the source is in the main +ash directory. + +SOURCE CODE GENERATORS: Files whose names begin with "mk" are +programs that generate source code. A complete list of these +programs is: + + program intput files generates + ------- ------------ --------- + mkbuiltins builtins builtins.h builtins.c + mkinit *.c init.c + mknodes nodetypes nodes.h nodes.c + mksignames - signames.h signames.c + mksyntax - syntax.h syntax.c + mktokens - token.h + bltin/mkexpr unary_op binary_op operators.h operators.c + +There are undoubtedly too many of these. Mkinit searches all the +C source files for entries looking like: + + INIT { + x = 1; /* executed during initialization */ + } + + RESET { + x = 2; /* executed when the shell does a longjmp + back to the main command loop */ + } + +It pulls this code out into routines which are when particular +events occur. The intent is to improve modularity by isolating +the information about which modules need to be explicitly +initialized/reset within the modules themselves. + +Mkinit recognizes several constructs for placing declarations in +the init.c file. + INCLUDE "file.h" +includes a file. The storage class MKINIT makes a declaration +available in the init.c file, for example: + MKINIT int funcnest; /* depth of function calls */ +MKINIT alone on a line introduces a structure or union declara- +tion: + MKINIT + struct redirtab { + short renamed[10]; + }; +Preprocessor #define statements are copied to init.c without any +special action to request this. + +INDENTATION: The ash source is indented in multiples of six +spaces. The only study that I have heard of on the subject con- +cluded that the optimal amount to indent is in the range of four +to six spaces. I use six spaces since it is not too big a jump +from the widely used eight spaces. If you really hate six space +indentation, use the adjind (source included) program to change +it to something else. + +EXCEPTIONS: Code for dealing with exceptions appears in +exceptions.c. The C language doesn't include exception handling, +so I implement it using setjmp and longjmp. The global variable +exception contains the type of exception. EXERROR is raised by +calling error. EXINT is an interrupt. + +INTERRUPTS: In an interactive shell, an interrupt will cause an +EXINT exception to return to the main command loop. (Exception: +EXINT is not raised if the user traps interrupts using the trap +command.) The INTOFF and INTON macros (defined in exception.h) +provide uninterruptable critical sections. Between the execution +of INTOFF and the execution of INTON, interrupt signals will be +held for later delivery. INTOFF and INTON can be nested. + +MEMALLOC.C: Memalloc.c defines versions of malloc and realloc +which call error when there is no memory left. It also defines a +stack oriented memory allocation scheme. Allocating off a stack +is probably more efficient than allocation using malloc, but the +big advantage is that when an exception occurs all we have to do +to free up the memory in use at the time of the exception is to +restore the stack pointer. The stack is implemented using a +linked list of blocks. + +STPUTC: If the stack were contiguous, it would be easy to store +strings on the stack without knowing in advance how long the +string was going to be: + p = stackptr; + *p++ = c; /* repeated as many times as needed */ + stackptr = p; +The following three macros (defined in memalloc.h) perform these +operations, but grow the stack if you run off the end: + STARTSTACKSTR(p); + STPUTC(c, p); /* repeated as many times as needed */ + grabstackstr(p); + +We now start a top-down look at the code: + +MAIN.C: The main routine performs some initialization, executes +the user's profile if necessary, and calls cmdloop. Cmdloop is +repeatedly parses and executes commands. + +OPTIONS.C: This file contains the option processing code. It is +called from main to parse the shell arguments when the shell is +invoked, and it also contains the set builtin. The -i and -j op- +tions (the latter turns on job control) require changes in signal +handling. The routines setjobctl (in jobs.c) and setinteractive +(in trap.c) are called to handle changes to these options. + +PARSING: The parser code is all in parser.c. A recursive des- +cent parser is used. Syntax tables (generated by mksyntax) are +used to classify characters during lexical analysis. There are +three tables: one for normal use, one for use when inside single +quotes, and one for use when inside double quotes. The tables +are machine dependent because they are indexed by character vari- +ables and the range of a char varies from machine to machine. + +PARSE OUTPUT: The output of the parser consists of a tree of +nodes. The various types of nodes are defined in the file node- +types. + +Nodes of type NARG are used to represent both words and the con- +tents of here documents. An early version of ash kept the con- +tents of here documents in temporary files, but keeping here do- +cuments in memory typically results in significantly better per- +formance. It would have been nice to make it an option to use +temporary files for here documents, for the benefit of small +machines, but the code to keep track of when to delete the tem- +porary files was complex and I never fixed all the bugs in it. +(AT&T has been maintaining the Bourne shell for more than ten +years, and to the best of my knowledge they still haven't gotten +it to handle temporary files correctly in obscure cases.) + +The text field of a NARG structure points to the text of the +word. The text consists of ordinary characters and a number of +special codes defined in parser.h. The special codes are: + + CTLVAR Variable substitution + CTLENDVAR End of variable substitution + CTLBACKQ Command substitution + CTLESC Escape next character + +A variable substitution contains the following elements: + + CTLVAR type name '=' [ alternative-text CTLENDVAR ] + +The type field is a single character specifying the type of sub- +stitution. The possible types are: + + VSNORMAL $var + VSMINUS ${var-text} + VSMINUS|VSNUL ${var:-text} + VSPLUS ${var+text} + VSPLUS|VSNUL ${var:+text} + VSQUESTION ${var?text} + VSQUESTION|VSNUL ${var:?text} + VSASSIGN ${var=text} + VSASSIGN|VSNUL ${var=text} + +The name of the variable comes next, terminated by an equals +sign. If the type is not VSNORMAL, then the text field in the +substitution follows, terminated by a CTLENDVAR byte. + +Commands in back quotes are parsed and stored in a linked list. +The locations of these commands in the string are indicated by +the CTLBACKQ character. + +The character CTLESC escapes the next character, so that in case +any of the CTL characters mentioned above appear in the input, +they can be passed through transparently. CTLESC is also used to +escape '*', '?', '[', and '!' characters which were quoted by the +user and thus should not be used for file name generation. + +CTLESC characters have proved to be particularly tricky to get +right. In the case of here documents which are not subject to +variable and command substitution, the parser doesn't insert any +CTLESC characters to begin with (so the contents of the text +field can be written without any processing). Other here docu- +ments, and words which are not subject to splitting and file name +generation, have the CTLESC characters removed during the vari- +able and command substitution phase. Words which are subject +splitting and file name generation have the CTLESC characters re- +moved as part of the file name phase. + +EXECUTION: Command execution is handled by the following files: + eval.c The top level routines. + redir.c Code to handle redirection of input and output. + jobs.c Code to handle forking, waiting, and job control. + exec.c Code to path searches and the actual exec sys call. + expand.c Code to evaluate arguments. + var.c Maintains the variable symbol table. Called from expand.c. + +EVAL.C: Evaltree recursively executes a parse tree. The exit +status is returned in the global variable exitstatus. The alter- +native entry evalbackcmd is called to evaluate commands in back +quotes. It saves the result in memory if the command is a buil- +tin; otherwise it forks off a child to execute the command and +connects the standard output of the child to a pipe. + +JOBS.C: To create a process, you call makejob to return a job +structure, and then call forkshell (passing the job structure as +an argument) to create the process. Waitforjob waits for a job +to complete. These routines take care of process groups if job +control is defined. + +REDIR.C: Ash allows file descriptors to be redirected and then +restored without forking off a child process. This is accom- +plished by duplicating the original file descriptors. The redir- +tab structure records where the file descriptors have be dupli- +cated to. + +EXEC.C: The routine find_command locates a command, and enters +the command in the hash table if it is not already there. The +third argument specifies whether it is to print an error message +if the command is not found. (When a pipeline is set up, +find_command is called for all the commands in the pipeline be- +fore any forking is done, so to get the commands into the hash +table of the parent process. But to make command hashing as +transparent as possible, we silently ignore errors at that point +and only print error messages if the command cannot be found +later.) + +The routine shellexec is the interface to the exec system call. + +EXPAND.C: Arguments are processed in three passes. The first +(performed by the routine argstr) performs variable and command +substitution. The second (ifsbreakup) performs word splitting +and the third (expandmeta) performs file name generation. If the +"/u" directory is simulated, then when "/u/username" is replaced +by the user's home directory, the flag "didudir" is set. This +tells the cd command that it should print out the directory name, +just as it would if the "/u" directory were implemented using +symbolic links. + +VAR.C: Variables are stored in a hash table. Probably we should +switch to extensible hashing. The variable name is stored in the +same string as the value (using the format "name=value") so that +no string copying is needed to create the environment of a com- +mand. Variables which the shell references internally are preal- +located so that the shell can reference the values of these vari- +ables without doing a lookup. + +When a program is run, the code in eval.c sticks any environment +variables which precede the command (as in "PATH=xxx command") in +the variable table as the simplest way to strip duplicates, and +then calls "environment" to get the value of the environment. +There are two consequences of this. First, if an assignment to +PATH precedes the command, the value of PATH before the assign- +ment must be remembered and passed to shellexec. Second, if the +program turns out to be a shell procedure, the strings from the +environment variables which preceded the command must be pulled +out of the table and replaced with strings obtained from malloc, +since the former will automatically be freed when the stack (see +the entry on memalloc.c) is emptied. + +BUILTIN COMMANDS: The procedures for handling these are scat- +tered throughout the code, depending on which location appears +most appropriate. They can be recognized because their names al- +ways end in "cmd". The mapping from names to procedures is +specified in the file builtins, which is processed by the mkbuil- +tins command. + +A builtin command is invoked with argc and argv set up like a +normal program. A builtin command is allowed to overwrite its +arguments. Builtin routines can call nextopt to do option pars- +ing. This is kind of like getopt, but you don't pass argc and +argv to it. Builtin routines can also call error. This routine +normally terminates the shell (or returns to the main command +loop if the shell is interactive), but when called from a builtin +command it causes the builtin command to terminate with an exit +status of 2. + +The directory bltins contains commands which can be compiled in- +dependently but can also be built into the shell for efficiency +reasons. The makefile in this directory compiles these programs +in the normal fashion (so that they can be run regardless of +whether the invoker is ash), but also creates a library named +bltinlib.a which can be linked with ash. The header file bltin.h +takes care of most of the differences between the ash and the +stand-alone environment. The user should call the main routine +"main", and #define main to be the name of the routine to use +when the program is linked into ash. This #define should appear +before bltin.h is included; bltin.h will #undef main if the pro- +gram is to be compiled stand-alone. + +CD.C: This file defines the cd and pwd builtins. The pwd com- +mand runs /bin/pwd the first time it is invoked (unless the user +has already done a cd to an absolute pathname), but then +remembers the current directory and updates it when the cd com- +mand is run, so subsequent pwd commands run very fast. The main +complication in the cd command is in the docd command, which +resolves symbolic links into actual names and informs the user +where the user ended up if he crossed a symbolic link. + +SIGNALS: Trap.c implements the trap command. The routine set- +signal figures out what action should be taken when a signal is +received and invokes the signal system call to set the signal ac- +tion appropriately. When a signal that a user has set a trap for +is caught, the routine "onsig" sets a flag. The routine dotrap +is called at appropriate points to actually handle the signal. +When an interrupt is caught and no trap has been set for that +signal, the routine "onint" in error.c is called. + +OUTPUT: Ash uses it's own output routines. There are three out- +put structures allocated. "Output" represents the standard out- +put, "errout" the standard error, and "memout" contains output +which is to be stored in memory. This last is used when a buil- +tin command appears in backquotes, to allow its output to be col- +lected without doing any I/O through the UNIX operating system. +The variables out1 and out2 normally point to output and errout, +respectively, but they are set to point to memout when appropri- +ate inside backquotes. + +INPUT: The basic input routine is pgetc, which reads from the +current input file. There is a stack of input files; the current +input file is the top file on this stack. The code allows the +input to come from a string rather than a file. (This is for the +-c option and the "." and eval builtin commands.) The global +variable plinno is saved and restored when files are pushed and +popped from the stack. The parser routines store the number of +the current line in this variable. + +DEBUGGING: If DEBUG is defined in shell.h, then the shell will +write debugging information to the file $HOME/trace. Most of +this is done using the TRACE macro, which takes a set of printf +arguments inside two sets of parenthesis. Example: +"TRACE(("n=%d0, n))". The double parenthesis are necessary be- +cause the preprocessor can't handle functions with a variable +number of arguments. Defining DEBUG also causes the shell to +generate a core dump if it is sent a quit signal. The tracing +code is in show.c. diff --git a/bin/dash/src/alias.c b/bin/dash/src/alias.c new file mode 100644 index 00000000..daeacbb8 --- /dev/null +++ b/bin/dash/src/alias.c @@ -0,0 +1,227 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <stdlib.h> +#include "shell.h" +#include "input.h" +#include "output.h" +#include "error.h" +#include "memalloc.h" +#include "mystring.h" +#include "alias.h" +#include "options.h" /* XXX for argptr (should remove?) */ + +#define ATABSIZE 39 + +struct alias *atab[ATABSIZE]; + +STATIC void setalias(const char *, const char *); +STATIC struct alias *freealias(struct alias *); +STATIC struct alias **__lookupalias(const char *); + +STATIC +void +setalias(const char *name, const char *val) +{ + struct alias *ap, **app; + + app = __lookupalias(name); + ap = *app; + INTOFF; + if (ap) { + if (!(ap->flag & ALIASINUSE)) { + ckfree(ap->val); + } + ap->val = savestr(val); + ap->flag &= ~ALIASDEAD; + } else { + /* not found */ + ap = ckmalloc(sizeof (struct alias)); + ap->name = savestr(name); + ap->val = savestr(val); + ap->flag = 0; + ap->next = 0; + *app = ap; + } + INTON; +} + +int +unalias(const char *name) +{ + struct alias **app; + + app = __lookupalias(name); + + if (*app) { + INTOFF; + *app = freealias(*app); + INTON; + return (0); + } + + return (1); +} + +void +rmaliases(void) +{ + struct alias *ap, **app; + int i; + + INTOFF; + for (i = 0; i < ATABSIZE; i++) { + app = &atab[i]; + for (ap = *app; ap; ap = *app) { + *app = freealias(*app); + if (ap == *app) { + app = &ap->next; + } + } + } + INTON; +} + +struct alias * +lookupalias(const char *name, int check) +{ + struct alias *ap = *__lookupalias(name); + + if (check && ap && (ap->flag & ALIASINUSE)) + return (NULL); + return (ap); +} + +/* + * TODO - sort output + */ +int +aliascmd(int argc, char **argv) +{ + char *n, *v; + int ret = 0; + struct alias *ap; + + if (argc == 1) { + int i; + + for (i = 0; i < ATABSIZE; i++) + for (ap = atab[i]; ap; ap = ap->next) { + printalias(ap); + } + return (0); + } + while ((n = *++argv) != NULL) { + if ((v = strchr(n+1, '=')) == NULL) { /* n+1: funny ksh stuff */ + if ((ap = *__lookupalias(n)) == NULL) { + outfmt(out2, "%s: %s not found\n", "alias", n); + ret = 1; + } else + printalias(ap); + } else { + *v++ = '\0'; + setalias(n, v); + } + } + + return (ret); +} + +int +unaliascmd(int argc, char **argv) +{ + int i; + + while ((i = nextopt("a")) != '\0') { + if (i == 'a') { + rmaliases(); + return (0); + } + } + for (i = 0; *argptr; argptr++) { + if (unalias(*argptr)) { + outfmt(out2, "%s: %s not found\n", "unalias", *argptr); + i = 1; + } + } + + return (i); +} + +STATIC struct alias * +freealias(struct alias *ap) { + struct alias *next; + + if (ap->flag & ALIASINUSE) { + ap->flag |= ALIASDEAD; + return ap; + } + + next = ap->next; + ckfree(ap->name); + ckfree(ap->val); + ckfree(ap); + return next; +} + +void +printalias(const struct alias *ap) { + out1fmt("%s=%s\n", ap->name, single_quote(ap->val)); +} + +STATIC struct alias ** +__lookupalias(const char *name) { + unsigned int hashval; + struct alias **app; + const char *p; + unsigned int ch; + + p = name; + + ch = (unsigned char)*p; + hashval = ch << 4; + while (ch) { + hashval += ch; + ch = (unsigned char)*++p; + } + app = &atab[hashval % ATABSIZE]; + + for (; *app; app = &(*app)->next) { + if (equal(name, (*app)->name)) { + break; + } + } + + return app; +} diff --git a/bin/dash/src/alias.h b/bin/dash/src/alias.h new file mode 100644 index 00000000..fb841d64 --- /dev/null +++ b/bin/dash/src/alias.h @@ -0,0 +1,52 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)alias.h 8.2 (Berkeley) 5/4/95 + */ + +#define ALIASINUSE 1 +#define ALIASDEAD 2 + +struct alias { + struct alias *next; + char *name; + char *val; + int flag; +}; + +struct alias *lookupalias(const char *, int); +int aliascmd(int, char **); +int unaliascmd(int, char **); +void rmaliases(void); +int unalias(const char *); +void printalias(const struct alias *); diff --git a/bin/dash/src/arith_yacc.c b/bin/dash/src/arith_yacc.c new file mode 100644 index 00000000..1a087c32 --- /dev/null +++ b/bin/dash/src/arith_yacc.c @@ -0,0 +1,304 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 2007 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <inttypes.h> +#include <stdlib.h> +#include "arith_yacc.h" +#include "expand.h" +#include "shell.h" +#include "error.h" +#include "output.h" +#include "var.h" + +#if ARITH_BOR + 11 != ARITH_BORASS || ARITH_ASS + 11 != ARITH_EQ +#error Arithmetic tokens are out of order. +#endif + +static const char *arith_startbuf; + +const char *arith_buf; +union yystype yylval; + +static int last_token; + +#define ARITH_PRECEDENCE(op, prec) [op - ARITH_BINOP_MIN] = prec + +static const char prec[ARITH_BINOP_MAX - ARITH_BINOP_MIN] = { + ARITH_PRECEDENCE(ARITH_MUL, 0), + ARITH_PRECEDENCE(ARITH_DIV, 0), + ARITH_PRECEDENCE(ARITH_REM, 0), + ARITH_PRECEDENCE(ARITH_ADD, 1), + ARITH_PRECEDENCE(ARITH_SUB, 1), + ARITH_PRECEDENCE(ARITH_LSHIFT, 2), + ARITH_PRECEDENCE(ARITH_RSHIFT, 2), + ARITH_PRECEDENCE(ARITH_LT, 3), + ARITH_PRECEDENCE(ARITH_LE, 3), + ARITH_PRECEDENCE(ARITH_GT, 3), + ARITH_PRECEDENCE(ARITH_GE, 3), + ARITH_PRECEDENCE(ARITH_EQ, 4), + ARITH_PRECEDENCE(ARITH_NE, 4), + ARITH_PRECEDENCE(ARITH_BAND, 5), + ARITH_PRECEDENCE(ARITH_BXOR, 6), + ARITH_PRECEDENCE(ARITH_BOR, 7), +}; + +#define ARITH_MAX_PREC 8 + +static void yyerror(const char *s) __attribute__ ((noreturn)); +static void yyerror(const char *s) +{ + sh_error("arithmetic expression: %s: \"%s\"", s, arith_startbuf); + /* NOTREACHED */ +} + +static inline int arith_prec(int op) +{ + return prec[op - ARITH_BINOP_MIN]; +} + +static inline int higher_prec(int op1, int op2) +{ + return arith_prec(op1) < arith_prec(op2); +} + +static intmax_t do_binop(int op, intmax_t a, intmax_t b) +{ + switch (op) { + default: + case ARITH_REM: + case ARITH_DIV: + if (!b) + yyerror("division by zero"); + return op == ARITH_REM ? a % b : a / b; + case ARITH_MUL: + return a * b; + case ARITH_ADD: + return a + b; + case ARITH_SUB: + return a - b; + case ARITH_LSHIFT: + return a << b; + case ARITH_RSHIFT: + return a >> b; + case ARITH_LT: + return a < b; + case ARITH_LE: + return a <= b; + case ARITH_GT: + return a > b; + case ARITH_GE: + return a >= b; + case ARITH_EQ: + return a == b; + case ARITH_NE: + return a != b; + case ARITH_BAND: + return a & b; + case ARITH_BXOR: + return a ^ b; + case ARITH_BOR: + return a | b; + } +} + +static intmax_t assignment(int var, int noeval); + +static intmax_t primary(int token, union yystype *val, int op, int noeval) +{ + intmax_t result; + +again: + switch (token) { + case ARITH_LPAREN: + result = assignment(op, noeval); + if (last_token != ARITH_RPAREN) + yyerror("expecting ')'"); + last_token = yylex(); + return result; + case ARITH_NUM: + last_token = op; + return val->val; + case ARITH_VAR: + last_token = op; + return noeval ? val->val : lookupvarint(val->name); + case ARITH_ADD: + token = op; + *val = yylval; + op = yylex(); + goto again; + case ARITH_SUB: + *val = yylval; + return -primary(op, val, yylex(), noeval); + case ARITH_NOT: + *val = yylval; + return !primary(op, val, yylex(), noeval); + case ARITH_BNOT: + *val = yylval; + return ~primary(op, val, yylex(), noeval); + default: + yyerror("expecting primary"); + } +} + +static intmax_t binop2(intmax_t a, int op, int prec, int noeval) +{ + for (;;) { + union yystype val; + intmax_t b; + int op2; + int token; + + token = yylex(); + val = yylval; + + b = primary(token, &val, yylex(), noeval); + + op2 = last_token; + if (op2 >= ARITH_BINOP_MIN && op2 < ARITH_BINOP_MAX && + higher_prec(op2, op)) { + b = binop2(b, op2, arith_prec(op), noeval); + op2 = last_token; + } + + a = noeval ? b : do_binop(op, a, b); + + if (op2 < ARITH_BINOP_MIN || op2 >= ARITH_BINOP_MAX || + arith_prec(op2) >= prec) + return a; + + op = op2; + } +} + +static intmax_t binop(int token, union yystype *val, int op, int noeval) +{ + intmax_t a = primary(token, val, op, noeval); + + op = last_token; + if (op < ARITH_BINOP_MIN || op >= ARITH_BINOP_MAX) + return a; + + return binop2(a, op, ARITH_MAX_PREC, noeval); +} + +static intmax_t and(int token, union yystype *val, int op, int noeval) +{ + intmax_t a = binop(token, val, op, noeval); + intmax_t b; + + op = last_token; + if (op != ARITH_AND) + return a; + + token = yylex(); + *val = yylval; + + b = and(token, val, yylex(), noeval | !a); + + return a && b; +} + +static intmax_t or(int token, union yystype *val, int op, int noeval) +{ + intmax_t a = and(token, val, op, noeval); + intmax_t b; + + op = last_token; + if (op != ARITH_OR) + return a; + + token = yylex(); + *val = yylval; + + b = or(token, val, yylex(), noeval | !!a); + + return a || b; +} + +static intmax_t cond(int token, union yystype *val, int op, int noeval) +{ + intmax_t a = or(token, val, op, noeval); + intmax_t b; + intmax_t c; + + if (last_token != ARITH_QMARK) + return a; + + b = assignment(yylex(), noeval | !a); + + if (last_token != ARITH_COLON) + yyerror("expecting ':'"); + + token = yylex(); + *val = yylval; + + c = cond(token, val, yylex(), noeval | !!a); + + return a ? b : c; +} + +static intmax_t assignment(int var, int noeval) +{ + union yystype val = yylval; + int op = yylex(); + intmax_t result; + + if (var != ARITH_VAR) + return cond(var, &val, op, noeval); + + if (op != ARITH_ASS && (op < ARITH_ASS_MIN || op >= ARITH_ASS_MAX)) + return cond(var, &val, op, noeval); + + result = assignment(yylex(), noeval); + if (noeval) + return result; + + return setvarint(val.name, + op == ARITH_ASS ? result : + do_binop(op - 11, lookupvarint(val.name), result), 0); +} + +intmax_t arith(const char *s) +{ + intmax_t result; + + arith_buf = arith_startbuf = s; + + result = assignment(yylex(), 0); + + if (last_token) + yyerror("expecting EOF"); + + return result; +} diff --git a/bin/dash/src/arith_yacc.h b/bin/dash/src/arith_yacc.h new file mode 100644 index 00000000..ff34d524 --- /dev/null +++ b/bin/dash/src/arith_yacc.h @@ -0,0 +1,89 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 2007 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#define ARITH_ASS 1 + +#define ARITH_OR 2 +#define ARITH_AND 3 +#define ARITH_BAD 4 +#define ARITH_NUM 5 +#define ARITH_VAR 6 +#define ARITH_NOT 7 + +#define ARITH_BINOP_MIN 8 +#define ARITH_LE 8 +#define ARITH_GE 9 +#define ARITH_LT 10 +#define ARITH_GT 11 +#define ARITH_EQ 12 +#define ARITH_REM 13 +#define ARITH_BAND 14 +#define ARITH_LSHIFT 15 +#define ARITH_RSHIFT 16 +#define ARITH_MUL 17 +#define ARITH_ADD 18 +#define ARITH_BOR 19 +#define ARITH_SUB 20 +#define ARITH_BXOR 21 +#define ARITH_DIV 22 +#define ARITH_NE 23 +#define ARITH_BINOP_MAX 24 + +#define ARITH_ASS_MIN 24 +#define ARITH_REMASS 24 +#define ARITH_BANDASS 25 +#define ARITH_LSHIFTASS 26 +#define ARITH_RSHIFTASS 27 +#define ARITH_MULASS 28 +#define ARITH_ADDASS 29 +#define ARITH_BORASS 30 +#define ARITH_SUBASS 31 +#define ARITH_BXORASS 32 +#define ARITH_DIVASS 33 +#define ARITH_ASS_MAX 34 + +#define ARITH_LPAREN 34 +#define ARITH_RPAREN 35 +#define ARITH_BNOT 36 +#define ARITH_QMARK 37 +#define ARITH_COLON 38 + +union yystype { + intmax_t val; + char *name; +}; + +extern union yystype yylval; + +int yylex(void); diff --git a/bin/dash/src/arith_yylex.c b/bin/dash/src/arith_yylex.c new file mode 100644 index 00000000..ec5b5b25 --- /dev/null +++ b/bin/dash/src/arith_yylex.c @@ -0,0 +1,240 @@ +/*- + * Copyright (c) 2002 + * Herbert Xu. + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <inttypes.h> +#include <stdlib.h> +#include <string.h> +#include "arith_yacc.h" +#include "expand.h" +#include "error.h" +#include "shell.h" +#include "memalloc.h" +#include "syntax.h" +#include "system.h" + +#if ARITH_BOR + 11 != ARITH_BORASS || ARITH_ASS + 11 != ARITH_EQ +#error Arithmetic tokens are out of order. +#endif + +extern const char *arith_buf; + +int +yylex() +{ + int value; + const char *buf = arith_buf; + const char *p; + + for (;;) { + value = *buf; + switch (value) { + case ' ': + case '\t': + case '\n': + buf++; + continue; + default: + return ARITH_BAD; + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + yylval.val = strtoimax(buf, (char **)&arith_buf, 0); + return ARITH_NUM; + case 'A': + case 'B': + case 'C': + case 'D': + case 'E': + case 'F': + case 'G': + case 'H': + case 'I': + case 'J': + case 'K': + case 'L': + case 'M': + case 'N': + case 'O': + case 'P': + case 'Q': + case 'R': + case 'S': + case 'T': + case 'U': + case 'V': + case 'W': + case 'X': + case 'Y': + case 'Z': + case '_': + case 'a': + case 'b': + case 'c': + case 'd': + case 'e': + case 'f': + case 'g': + case 'h': + case 'i': + case 'j': + case 'k': + case 'l': + case 'm': + case 'n': + case 'o': + case 'p': + case 'q': + case 'r': + case 's': + case 't': + case 'u': + case 'v': + case 'w': + case 'x': + case 'y': + case 'z': + p = buf; + while (buf++, is_in_name(*buf)) + ; + yylval.name = stalloc(buf - p + 1); + *(char *)mempcpy(yylval.name, p, buf - p) = 0; + value = ARITH_VAR; + goto out; + case '=': + value += ARITH_ASS - '='; +checkeq: + buf++; +checkeqcur: + if (*buf != '=') + goto out; + value += 11; + break; + case '>': + switch (*++buf) { + case '=': + value += ARITH_GE - '>'; + break; + case '>': + value += ARITH_RSHIFT - '>'; + goto checkeq; + default: + value += ARITH_GT - '>'; + goto out; + } + break; + case '<': + switch (*++buf) { + case '=': + value += ARITH_LE - '<'; + break; + case '<': + value += ARITH_LSHIFT - '<'; + goto checkeq; + default: + value += ARITH_LT - '<'; + goto out; + } + break; + case '|': + if (*++buf != '|') { + value += ARITH_BOR - '|'; + goto checkeqcur; + } + value += ARITH_OR - '|'; + break; + case '&': + if (*++buf != '&') { + value += ARITH_BAND - '&'; + goto checkeqcur; + } + value += ARITH_AND - '&'; + break; + case '!': + if (*++buf != '=') { + value += ARITH_NOT - '!'; + goto out; + } + value += ARITH_NE - '!'; + break; + case 0: + goto out; + case '(': + value += ARITH_LPAREN - '('; + break; + case ')': + value += ARITH_RPAREN - ')'; + break; + case '*': + value += ARITH_MUL - '*'; + goto checkeq; + case '/': + value += ARITH_DIV - '/'; + goto checkeq; + case '%': + value += ARITH_REM - '%'; + goto checkeq; + case '+': + value += ARITH_ADD - '+'; + goto checkeq; + case '-': + value += ARITH_SUB - '-'; + goto checkeq; + case '~': + value += ARITH_BNOT - '~'; + break; + case '^': + value += ARITH_BXOR - '^'; + goto checkeq; + case '?': + value += ARITH_QMARK - '?'; + break; + case ':': + value += ARITH_COLON - ':'; + break; + } + break; + } + + buf++; +out: + arith_buf = buf; + return value; +} diff --git a/bin/dash/src/bltin/bltin.h b/bin/dash/src/bltin/bltin.h new file mode 100644 index 00000000..f5ac06f2 --- /dev/null +++ b/bin/dash/src/bltin/bltin.h @@ -0,0 +1,89 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)bltin.h 8.1 (Berkeley) 5/31/93 + */ + +/* + * This file is included by programs which are optionally built into the + * shell. If SHELL is defined, we try to map the standard UNIX library + * routines to ash routines using defines. + */ + +#include "../shell.h" +#include "../mystring.h" +#include "../options.h" +#ifdef SHELL +#include "../memalloc.h" +#include "../output.h" +#include "../error.h" +#ifndef USE_GLIBC_STDIO +#undef stdout +#undef stderr +#undef putc +#undef putchar +#undef fileno +#define stdout out1 +#define stderr out2 +#define printf out1fmt +#define putc(c, file) outc(c, file) +#define putchar(c) out1c(c) +#define FILE struct output +#define fprintf outfmt +#define fputs outstr +#define fflush flushout +#define fileno(f) ((f)->fd) +#define ferror outerr +#endif +#define INITARGS(argv) +#define error sh_error +#define warn sh_warn +#define warnx sh_warnx +#define exit sh_exit +#define setprogname(s) +#define getprogname() commandname +#define setlocate(l,s) 0 + +#define getenv(p) bltinlookup((p),0) + +#else +#undef NULL +#include <stdio.h> +#undef main +#define INITARGS(argv) if ((commandname = argv[0]) == NULL) {fputs("Argc is zero\n", stderr); exit(2);} else +#endif + +int echocmd(int, char **); + + +extern const char *commandname; diff --git a/bin/dash/src/bltin/echo.1 b/bin/dash/src/bltin/echo.1 new file mode 100644 index 00000000..fbc7fb43 --- /dev/null +++ b/bin/dash/src/bltin/echo.1 @@ -0,0 +1,109 @@ +.\" Copyright (c) 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" Copyright (c) 1997-2005 +.\" Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Kenneth Almquist. +.\" Copyright 1989 by Kenneth Almquist +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)echo.1 8.1 (Berkeley) 5/31/93 +.\" +.Dd May 31, 1993 +.Dt ECHO 1 +.Os +.Sh NAME +.Nm echo +.Nd produce message in a shell script +.Sh SYNOPSIS +.Nm +.Op Fl n | Fl e +.Ar args ... +.Sh DESCRIPTION +.Nm +prints its arguments on the standard output, separated by spaces. +Unless the +.Fl n +option is present, a newline is output following the arguments. +The +.Fl e +option causes +.Nm +to treat the escape sequences specially, as described in the following +paragraph. +The +.Fl e +option is the default, and is provided solely for compatibility with +other systems. +Only one of the options +.Fl n +and +.Fl e +may be given. +.Pp +If any of the following sequences of characters is encountered during +output, the sequence is not output. Instead, the specified action is +performed: +.Bl -tag -width indent +.It Li \eb +A backspace character is output. +.It Li \ec +Subsequent output is suppressed. This is normally used at the end of the +last argument to suppress the trailing newline that +.Nm +would otherwise output. +.It Li \ef +Output a form feed. +.It Li \en +Output a newline character. +.It Li \er +Output a carriage return. +.It Li \et +Output a (horizontal) tab character. +.It Li \ev +Output a vertical tab. +.It Li \e0 Ns Ar digits +Output the character whose value is given by zero to three digits. +If there are zero digits, a nul character is output. +.It Li \e\e +Output a backslash. +.El +.Sh HINTS +Remember that backslash is special to the shell and needs to be escaped. +To output a message to standard error, say +.Pp +.D1 echo message \*[Gt]\*[Am]2 +.Sh BUGS +The octal character escape mechanism +.Pq Li \e0 Ns Ar digits +differs from the +C language mechanism. +.Pp +There is no way to force +.Nm +to treat its arguments literally, rather than interpreting them as +options and escape sequences. diff --git a/bin/dash/src/bltin/printf.1 b/bin/dash/src/bltin/printf.1 new file mode 100644 index 00000000..38731732 --- /dev/null +++ b/bin/dash/src/bltin/printf.1 @@ -0,0 +1,354 @@ +.\" Copyright (c) 1989, 1990, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" Copyright (c) 1997-2005 +.\" Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the Institute of Electrical and Electronics Engineers, Inc. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" from: @(#)printf.1 8.1 (Berkeley) 6/6/93 +.\" +.Dd November 5, 1993 +.Dt PRINTF 1 +.Os +.Sh NAME +.Nm printf +.Nd formatted output +.Sh SYNOPSIS +.Nm +.Ar format +.Op Ar arguments ... +.Sh DESCRIPTION +.Nm +formats and prints its arguments, after the first, under control +of the +.Ar format . +The +.Ar format +is a character string which contains three types of objects: plain characters, +which are simply copied to standard output, character escape sequences which +are converted and copied to the standard output, and format specifications, +each of which causes printing of the next successive +.Ar argument . +.Pp +The +.Ar arguments +after the first are treated as strings if the corresponding format is +either +.Cm b , +.Cm B , +.Cm c +or +.Cm s ; +otherwise it is evaluated as a C constant, with the following extensions: +.Pp +.Bl -bullet -offset indent -compact +.It +A leading plus or minus sign is allowed. +.It +If the leading character is a single or double quote, the value is the +.Tn ASCII +code of the next character. +.El +.Pp +The format string is reused as often as necessary to satisfy the +.Ar arguments . +Any extra format specifications are evaluated with zero or the null +string. +.Pp +Character escape sequences are in backslash notation as defined in +.St -ansiC . +The characters and their meanings are as follows: +.Bl -tag -width Ds -offset indent +.It Cm \ee +Write an \*[Lt]escape\*[Gt] character. +.It Cm \ea +Write a \*[Lt]bell\*[Gt] character. +.It Cm \eb +Write a \*[Lt]backspace\*[Gt] character. +.It Cm \ef +Write a \*[Lt]form-feed\*[Gt] character. +.It Cm \en +Write a \*[Lt]new-line\*[Gt] character. +.It Cm \er +Write a \*[Lt]carriage return\*[Gt] character. +.It Cm \et +Write a \*[Lt]tab\*[Gt] character. +.It Cm \ev +Write a \*[Lt]vertical tab\*[Gt] character. +.It Cm \e\' +Write a \*[Lt]single quote\*[Gt] character. +.It Cm \e" +Write a \*[Lt]double quote\*[Gt] character. +.It Cm \e\e +Write a backslash character. +.It Cm \e Ns Ar num +Write an 8\-bit character whose +.Tn ASCII +value is the 1\-, 2\-, or 3\-digit octal number +.Ar num . +.It Cm \ex Ns Ar xx +Write an 8\-bit character whose +.Tn ASCII +value is the 1\- or 2\-digit hexadecimal number +.Ar xx . +.El +.Pp +Each format specification is introduced by the percent character +(``%''). +The remainder of the format specification includes, +in the following order: +.Bl -tag -width Ds +.It "Zero or more of the following flags:" +.Bl -tag -width Ds +.It Cm # +A `#' character +specifying that the value should be printed in an ``alternative form''. +For +.Cm b , +.Cm c , +.Cm d , +and +.Cm s +formats, this option has no effect. +For the +.Cm o +format the precision of the number is increased to force the first +character of the output string to a zero. +For the +.Cm x +.Pq Cm X +format, a non-zero result has the string +.Li 0x +.Pq Li 0X +prepended to it. +For +.Cm e , +.Cm E , +.Cm f , +.Cm g , +and +.Cm G +formats, the result will always contain a decimal point, even if no +digits follow the point (normally, a decimal point only appears in the +results of those formats if a digit follows the decimal point). +For +.Cm g +and +.Cm G +formats, trailing zeros are not removed from the result as they +would otherwise be. +.\" I turned this off - decided it isn't a valid use of '#' +.\" For the +.\" .Cm B +.\" format, backslash-escape sequences are expanded first; +.It Cm \&\- +A minus sign `\-' which specifies +.Em left adjustment +of the output in the indicated field; +.It Cm \&+ +A `+' character specifying that there should always be +a sign placed before the number when using signed formats. +.It Sq \&\ \& +A space specifying that a blank should be left before a positive number +for a signed format. +A `+' overrides a space if both are used; +.It Cm \&0 +A zero `0' character indicating that zero-padding should be used +rather than blank-padding. +A `\-' overrides a `0' if both are used; +.El +.It "Field Width:" +An optional digit string specifying a +.Em field width ; +if the output string has fewer characters than the field width it will +be blank-padded on the left (or right, if the left-adjustment indicator +has been given) to make up the field width (note that a leading zero +is a flag, but an embedded zero is part of a field width); +.It Precision : +An optional period, +.Sq Cm \&.\& , +followed by an optional digit string giving a +.Em precision +which specifies the number of digits to appear after the decimal point, +for +.Cm e +and +.Cm f +formats, or the maximum number of characters to be printed +from a string +.Sm off +.Pf ( Cm b No , +.Sm on +.Cm B +and +.Cm s +formats); if the digit string is missing, the precision is treated +as zero; +.It Format : +A character which indicates the type of format to use (one of +.Cm diouxXfwEgGbBcs ) . +.El +.Pp +A field width or precision may be +.Sq Cm \&* +instead of a digit string. +In this case an +.Ar argument +supplies the field width or precision. +.Pp +The format characters and their meanings are: +.Bl -tag -width Fl +.It Cm diouXx +The +.Ar argument +is printed as a signed decimal (d or i), unsigned octal, unsigned decimal, +or unsigned hexadecimal (X or x), respectively. +.It Cm f +The +.Ar argument +is printed in the style +.Sm off +.Pf [\-]ddd Cm \&. No ddd +.Sm on +where the number of d's +after the decimal point is equal to the precision specification for +the argument. +If the precision is missing, 6 digits are given; if the precision +is explicitly 0, no digits and no decimal point are printed. +.It Cm eE +The +.Ar argument +is printed in the style +.Sm off +.Pf [\-]d Cm \&. No ddd Cm e No \\*(Pmdd +.Sm on +where there +is one digit before the decimal point and the number after is equal to +the precision specification for the argument; when the precision is +missing, 6 digits are produced. +An upper-case E is used for an `E' format. +.It Cm gG +The +.Ar argument +is printed in style +.Cm f +or in style +.Cm e +.Pq Cm E +whichever gives full precision in minimum space. +.It Cm b +Characters from the string +.Ar argument +are printed with backslash-escape sequences expanded. +.br +The following additional backslash-escape sequences are supported: +.Bl -tag -width Ds +.It Cm \ec +Causes +.Nm +to ignore any remaining characters in the string operand containing it, +any remaining string operands, and any additional characters in +the format operand. +.It Cm \e0 Ns Ar num +Write an 8\-bit character whose +.Tn ASCII +value is the 1\-, 2\-, or 3\-digit +octal number +.Ar num . +.It Cm \e^ Ns Ar c +Write the control character +.Ar c . +Generates characters `\e000' through `\e037`, and `\e177' (from `\e^?'). +.It Cm \eM\- Ns Ar c +Write the character +.Ar c +with the 8th bit set. +Generates characters `\e241' through `\e376`. +.It Cm \eM^ Ns Ar c +Write the control character +.Ar c +with the 8th bit set. +Generates characters `\e000' through `\e037`, and `\e177' (from `\eM^?'). +.El +.It Cm B +Characters from the string +.Ar argument +are printed with unprintable characters backslash-escaped using the +.Sm off +.Pf ` Cm \e Ar c No ', +.Pf ` Cm \e^ Ar c No ', +.Pf ` Cm \eM\- Ar c No ' +or +.Pf ` Cm \eM^ Ar c No ', +.Sm on +formats described above. +.It Cm c +The first character of +.Ar argument +is printed. +.It Cm s +Characters from the string +.Ar argument +are printed until the end is reached or until the number of characters +indicated by the precision specification is reached; if the +precision is omitted, all characters in the string are printed. +.It Cm \&% +Print a `%'; no argument is used. +.El +.Pp +In no case does a non-existent or small field width cause truncation of +a field; padding takes place only if the specified field width exceeds +the actual width. +.Sh EXIT STATUS +.Nm +exits 0 on success, 1 on failure. +.Sh SEE ALSO +.Xr echo 1 , +.Xr printf 3 , +.Xr printf 9 +.Xr vis 3 +.Sh STANDARDS +The +.Nm +utility conforms to +.St -p1003.1-2001 . +.Pp +Support for the floating point formats and `*' as a field width and precision +are optional in POSIX. +.Pp +The behaviour of the %B format and the \e', \e", \exxx, \ee and +\e[M][\-|^]c escape sequences are undefined in POSIX. +.Sh BUGS +Since the floating point numbers are translated from +.Tn ASCII +to floating-point and +then back again, floating-point precision may be lost. +.Pp +Hexadecimal character constants are restricted to, and should be specified +as, two character constants. This is contrary to the ISO C standard but +does guarantee detection of the end of the constant. diff --git a/bin/dash/src/bltin/printf.c b/bin/dash/src/bltin/printf.c new file mode 100644 index 00000000..7785735b --- /dev/null +++ b/bin/dash/src/bltin/printf.c @@ -0,0 +1,478 @@ +/* + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/types.h> + +#include <ctype.h> +#include <errno.h> +#include <inttypes.h> +#include <limits.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +static int conv_escape_str(char *, char **); +static char *conv_escape(char *, int *); +static int getchr(void); +static double getdouble(void); +static uintmax_t getuintmax(int); +static char *getstr(void); +static char *mklong(const char *, const char *); +static void check_conversion(const char *, const char *); + +static int rval; +static char **gargv; + +#define isodigit(c) ((c) >= '0' && (c) <= '7') +#define octtobin(c) ((c) - '0') + +#include "bltin.h" +#include "system.h" + +#define PF(f, func) { \ + switch ((char *)param - (char *)array) { \ + default: \ + (void)printf(f, array[0], array[1], func); \ + break; \ + case sizeof(*param): \ + (void)printf(f, array[0], func); \ + break; \ + case 0: \ + (void)printf(f, func); \ + break; \ + } \ +} + +#define ASPF(sp, f, func) ({ \ + int ret; \ + switch ((char *)param - (char *)array) { \ + default: \ + ret = xasprintf(sp, f, array[0], array[1], func); \ + break; \ + case sizeof(*param): \ + ret = xasprintf(sp, f, array[0], func); \ + break; \ + case 0: \ + ret = xasprintf(sp, f, func); \ + break; \ + } \ + ret; \ +}) + + +static int print_escape_str(const char *f, int *param, int *array, char *s) +{ + struct stackmark smark; + char *p, *q; + int done; + int len; + int total; + + setstackmark(&smark); + done = conv_escape_str(s, &q); + p = stackblock(); + len = q - p; + total = len - 1; + + q[-1] = (!!((f[1] - 's') | done) - 1) & f[2]; + total += !!q[-1]; + if (f[1] == 's') + goto easy; + + p = makestrspace(len, q); + memset(p, 'X', total); + p[total] = 0; + + q = stackblock(); + total = ASPF(&p, f, p); + + len = strchrnul(p, 'X') - p; + memcpy(p + len, q, strspn(p + len, "X")); + +easy: + out1mem(p, total); + + popstackmark(&smark); + return done; +} + + +int printfcmd(int argc, char *argv[]) +{ + char *fmt; + char *format; + int ch; + + rval = 0; + + nextopt(nullstr); + + argv = argptr; + format = *argv; + + if (!format) + error("usage: printf format [arg ...]"); + + gargv = ++argv; + +#define SKIP1 "#-+ 0" +#define SKIP2 "*0123456789" + do { + /* + * Basic algorithm is to scan the format string for conversion + * specifications -- once one is found, find out if the field + * width or precision is a '*'; if it is, gather up value. + * Note, format strings are reused as necessary to use up the + * provided arguments, arguments of zero/null string are + * provided to use up the format string. + */ + + /* find next format specification */ + for (fmt = format; (ch = *fmt++) ;) { + char *start; + char nextch; + int array[2]; + int *param; + + if (ch == '\\') { + int c_ch; + fmt = conv_escape(fmt, &c_ch); + ch = c_ch; + goto pc; + } + if (ch != '%' || (*fmt == '%' && (++fmt || 1))) { +pc: + putchar(ch); + continue; + } + + /* Ok - we've found a format specification, + Save its address for a later printf(). */ + start = fmt - 1; + param = array; + + /* skip to field width */ + fmt += strspn(fmt, SKIP1); + if (*fmt == '*') { + ++fmt; + *param++ = getuintmax(1); + } else { + /* skip to possible '.', + * get following precision + */ + fmt += strspn(fmt, SKIP2); + } + + if (*fmt == '.') { + ++fmt; + if (*fmt == '*') { + ++fmt; + *param++ = getuintmax(1); + } else + fmt += strspn(fmt, SKIP2); + } + + ch = *fmt; + if (!ch) + error("missing format character"); + /* null terminate format string to we can use it + as an argument to printf. */ + nextch = fmt[1]; + fmt[1] = 0; + switch (ch) { + + case 'b': + *fmt = 's'; + /* escape if a \c was encountered */ + if (print_escape_str(start, param, array, + getstr())) + goto out; + *fmt = 'b'; + break; + case 'c': { + int p = getchr(); + PF(start, p); + break; + } + case 's': { + char *p = getstr(); + PF(start, p); + break; + } + case 'd': + case 'i': { + uintmax_t p = getuintmax(1); + start = mklong(start, fmt); + PF(start, p); + break; + } + case 'o': + case 'u': + case 'x': + case 'X': { + uintmax_t p = getuintmax(0); + start = mklong(start, fmt); + PF(start, p); + break; + } + case 'a': + case 'A': + case 'e': + case 'E': + case 'f': + case 'F': + case 'g': + case 'G': { + double p = getdouble(); + PF(start, p); + break; + } + default: + error("%s: invalid directive", start); + } + *++fmt = nextch; + } + } while (gargv != argv && *gargv); + +out: + return rval; +} + + +/* + * Print SysV echo(1) style escape string + * Halts processing string if a \c escape is encountered. + */ +static int +conv_escape_str(char *str, char **sp) +{ + int c; + int ch; + char *cp; + + /* convert string into a temporary buffer... */ + STARTSTACKSTR(cp); + + do { + c = ch = *str++; + if (ch != '\\') + continue; + + c = *str++; + if (c == 'c') { + /* \c as in SYSV echo - abort all processing.... */ + c = ch = 0x100; + continue; + } + + /* + * %b string octal constants are not like those in C. + * They start with a \0, and are followed by 0, 1, 2, + * or 3 octal digits. + */ + if (c == '0' && isodigit(*str)) + str++; + + /* Finally test for sequences valid in the format string */ + str = conv_escape(str - 1, &c); + } while (STPUTC(c, cp), (char)ch); + + *sp = cp; + + return ch; +} + +/* + * Print "standard" escape characters + */ +static char * +conv_escape(char *str, int *conv_ch) +{ + int value; + int ch; + + ch = *str; + + switch (ch) { + default: + if (!isodigit(*str)) { + value = '\\'; + goto out; + } + + ch = 3; + value = 0; + do { + value <<= 3; + value += octtobin(*str++); + } while (isodigit(*str) && --ch); + goto out; + + case '\\': value = '\\'; break; /* backslash */ + case 'a': value = '\a'; break; /* alert */ + case 'b': value = '\b'; break; /* backspace */ + case 'f': value = '\f'; break; /* form-feed */ + case 'n': value = '\n'; break; /* newline */ + case 'r': value = '\r'; break; /* carriage-return */ + case 't': value = '\t'; break; /* tab */ + case 'v': value = '\v'; break; /* vertical-tab */ + } + + str++; +out: + *conv_ch = value; + return str; +} + +static char * +mklong(const char *str, const char *ch) +{ + /* + * Replace a string like "%92.3u" with "%92.3"PRIuMAX. + * + * Although C99 does not guarantee it, we assume PRIiMAX, + * PRIoMAX, PRIuMAX, PRIxMAX, and PRIXMAX are all the same + * as PRIdMAX with the final 'd' replaced by the corresponding + * character. + */ + + char *copy; + size_t len; + + len = ch - str + sizeof(PRIdMAX); + STARTSTACKSTR(copy); + copy = makestrspace(len, copy); + memcpy(copy, str, len - sizeof(PRIdMAX)); + memcpy(copy + len - sizeof(PRIdMAX), PRIdMAX, sizeof(PRIdMAX)); + copy[len - 2] = *ch; + return (copy); +} + +static int +getchr(void) +{ + int val = 0; + + if (*gargv) + val = **gargv++; + return val; +} + +static char * +getstr(void) +{ + char *val = nullstr; + + if (*gargv) + val = *gargv++; + return val; +} + +static uintmax_t +getuintmax(int sign) +{ + uintmax_t val = 0; + char *cp, *ep; + + cp = *gargv; + if (cp == NULL) + goto out; + gargv++; + + val = (unsigned char) cp[1]; + if (*cp == '\"' || *cp == '\'') + goto out; + + errno = 0; + val = sign ? strtoimax(cp, &ep, 0) : strtoumax(cp, &ep, 0); + check_conversion(cp, ep); +out: + return val; +} + +static double +getdouble(void) +{ + double val; + char *cp, *ep; + + cp = *gargv; + if (cp == NULL) + return 0; + gargv++; + + if (*cp == '\"' || *cp == '\'') + return (unsigned char) cp[1]; + + errno = 0; + val = strtod(cp, &ep); + check_conversion(cp, ep); + return val; +} + +static void +check_conversion(const char *s, const char *ep) +{ + if (*ep) { + if (ep == s) + warnx("%s: expected numeric value", s); + else + warnx("%s: not completely converted", s); + rval = 1; + } else if (errno == ERANGE) { + warnx("%s: %s", s, strerror(ERANGE)); + rval = 1; + } +} + +int +echocmd(int argc, char **argv) +{ + const char *lastfmt = snlfmt; + int nonl; + + if (*++argv && equal(*argv, "-n")) { + argv++; + lastfmt = "%s"; + } + + do { + const char *fmt = "%s "; + char *s = *argv; + + if (!s || !*++argv) + fmt = lastfmt; + + nonl = print_escape_str(fmt, NULL, NULL, s ?: nullstr); + } while (!nonl && *argv); + return 0; +} diff --git a/bin/dash/src/bltin/test.1 b/bin/dash/src/bltin/test.1 new file mode 100644 index 00000000..42435fb3 --- /dev/null +++ b/bin/dash/src/bltin/test.1 @@ -0,0 +1,309 @@ +.\" Copyright (c) 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" Copyright (c) 1997-2005 +.\" Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the Institute of Electrical and Electronics Engineers, Inc. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)test.1 8.1 (Berkeley) 5/31/93 +.\" +.Dd May 31, 1993 +.Dt TEST 1 +.Os +.Sh NAME +.Nm test , +.Nm \&[ +.Nd condition evaluation utility +.Sh SYNOPSIS +.Nm test +.Ar expression +.Nm \&[ +.Ar expression Cm ] +.Sh DESCRIPTION +The +.Nm test +utility evaluates the expression and, if it evaluates +to true, returns a zero (true) exit status; otherwise +it returns 1 (false). +If there is no expression, test also +returns 1 (false). +.Pp +All operators and flags are separate arguments to the +.Nm test +utility. +.Pp +The following primaries are used to construct expression: +.Bl -tag -width Ar +.It Fl b Ar file +True if +.Ar file +exists and is a block special +file. +.It Fl c Ar file +True if +.Ar file +exists and is a character +special file. +.It Fl d Ar file +True if +.Ar file +exists and is a directory. +.It Fl e Ar file +True if +.Ar file +exists (regardless of type). +.It Fl f Ar file +True if +.Ar file +exists and is a regular file. +.It Fl g Ar file +True if +.Ar file +exists and its set group ID flag +is set. +.It Fl h Ar file +True if +.Ar file +exists and is a symbolic link. +.It Fl k Ar file +True if +.Ar file +exists and its sticky bit is set. +.It Fl n Ar string +True if the length of +.Ar string +is nonzero. +.It Fl p Ar file +True if +.Ar file +is a named pipe +.Po Tn FIFO Pc . +.It Fl r Ar file +True if +.Ar file +exists and is readable. +.It Fl s Ar file +True if +.Ar file +exists and has a size greater +than zero. +.It Fl t Ar file_descriptor +True if the file whose file descriptor number +is +.Ar file_descriptor +is open and is associated with a terminal. +.It Fl u Ar file +True if +.Ar file +exists and its set user ID flag +is set. +.It Fl w Ar file +True if +.Ar file +exists and is writable. +True +indicates only that the write flag is on. +The file is not writable on a read-only file +system even if this test indicates true. +.It Fl x Ar file +True if +.Ar file +exists and is executable. +True +indicates only that the execute flag is on. +If +.Ar file +is a directory, true indicates that +.Ar file +can be searched. +.It Fl z Ar string +True if the length of +.Ar string +is zero. +.It Fl L Ar file +True if +.Ar file +exists and is a symbolic link. +This operator is retained for compatibility with previous versions of +this program. +Do not rely on its existence; use +.Fl h +instead. +.It Fl O Ar file +True if +.Ar file +exists and its owner matches the effective user id of this process. +.It Fl G Ar file +True if +.Ar file +exists and its group matches the effective group id of this process. +.It Fl S Ar file +True if +.Ar file +exists and is a socket. +.It Ar file1 Fl nt Ar file2 +True if +.Ar file1 +exists and is newer than +.Ar file2 . +.It Ar file1 Fl ot Ar file2 +True if +.Ar file1 +exists and is older than +.Ar file2 . +.It Ar file1 Fl ef Ar file2 +True if +.Ar file1 +and +.Ar file2 +exist and refer to the same file. +.It Ar string +True if +.Ar string +is not the null +string. +.It Ar \&s\&1 Cm \&= Ar \&s\&2 +True if the strings +.Ar \&s\&1 +and +.Ar \&s\&2 +are identical. +.It Ar \&s\&1 Cm \&!= Ar \&s\&2 +True if the strings +.Ar \&s\&1 +and +.Ar \&s\&2 +are not identical. +.It Ar \&s\&1 Cm \&\*[Lt] Ar \&s\&2 +True if string +.Ar \&s\&1 +comes before +.Ar \&s\&2 +based on the ASCII value of their characters. +.It Ar \&s\&1 Cm \&\*[Gt] Ar \&s\&2 +True if string +.Ar \&s\&1 +comes after +.Ar \&s\&2 +based on the ASCII value of their characters. +.It Ar \&n\&1 Fl \&eq Ar \&n\&2 +True if the integers +.Ar \&n\&1 +and +.Ar \&n\&2 +are algebraically +equal. +.It Ar \&n\&1 Fl \&ne Ar \&n\&2 +True if the integers +.Ar \&n\&1 +and +.Ar \&n\&2 +are not +algebraically equal. +.It Ar \&n\&1 Fl \> Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically +greater than the integer +.Ar \&n\&2 . +.It Ar \&n\&1 Fl \&ge Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically +greater than or equal to the integer +.Ar \&n\&2 . +.It Ar \&n\&1 Fl \< Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically less +than the integer +.Ar \&n\&2 . +.It Ar \&n\&1 Fl \&le Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically less +than or equal to the integer +.Ar \&n\&2 . +.El +.Pp +These primaries can be combined with the following operators: +.Bl -tag -width Ar +.It Cm \&! Ar expression +True if +.Ar expression +is false. +.It Ar expression1 Fl a Ar expression2 +True if both +.Ar expression1 +and +.Ar expression2 +are true. +.It Ar expression1 Fl o Ar expression2 +True if either +.Ar expression1 +or +.Ar expression2 +are true. +.It Cm \&( Ns Ar expression Ns Cm \&) +True if expression is true. +.El +.Pp +The +.Fl a +operator has higher precedence than the +.Fl o +operator. +.Sh GRAMMAR AMBIGUITY +The +.Nm test +grammar is inherently ambiguous. +In order to assure a degree of consistency, the cases described in +.St -p1003.2 +section 4.62.4, +are evaluated consistently according to the rules specified in the +standards document. +All other cases are subject to the ambiguity in the command semantics. +.Sh EXIT STATUS +The +.Nm test +utility exits with one of the following values: +.Bl -tag -width Ds +.It 0 +expression evaluated to true. +.It 1 +expression evaluated to false or expression was +missing. +.It \*[Gt]1 +An error occurred. +.El +.Sh STANDARDS +The +.Nm test +utility implements a superset of the +.St -p1003.2 +specification. diff --git a/bin/dash/src/bltin/test.c b/bin/dash/src/bltin/test.c new file mode 100644 index 00000000..c7fc479d --- /dev/null +++ b/bin/dash/src/bltin/test.c @@ -0,0 +1,700 @@ +/* + * test(1); version 7-like -- author Erik Baalbergen + * modified by Eric Gisin to be used as built-in. + * modified by Arnold Robbins to add SVR3 compatibility + * (-x -c -b -p -u -g -k) plus Korn's -L -nt -ot -ef and new -S (socket). + * modified by J.T. Conklin for NetBSD. + * + * This program is in the Public Domain. + */ + +#include <sys/stat.h> +#include <sys/types.h> + +#include <fcntl.h> +#include <inttypes.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <stdarg.h> +#include "bltin.h" + +/* test(1) accepts the following grammar: + oexpr ::= aexpr | aexpr "-o" oexpr ; + aexpr ::= nexpr | nexpr "-a" aexpr ; + nexpr ::= primary | "!" primary + primary ::= unary-operator operand + | operand binary-operator operand + | operand + | "(" oexpr ")" + ; + unary-operator ::= "-r"|"-w"|"-x"|"-f"|"-d"|"-c"|"-b"|"-p"| + "-u"|"-g"|"-k"|"-s"|"-t"|"-z"|"-n"|"-o"|"-O"|"-G"|"-L"|"-S"; + + binary-operator ::= "="|"!="|"-eq"|"-ne"|"-ge"|"-gt"|"-le"|"-lt"| + "-nt"|"-ot"|"-ef"; + operand ::= <any legal UNIX file name> +*/ + +enum token { + EOI, + FILRD, + FILWR, + FILEX, + FILEXIST, + FILREG, + FILDIR, + FILCDEV, + FILBDEV, + FILFIFO, + FILSOCK, + FILSYM, + FILGZ, + FILTT, + FILSUID, + FILSGID, + FILSTCK, + FILNT, + FILOT, + FILEQ, + FILUID, + FILGID, + STREZ, + STRNZ, + STREQ, + STRNE, + STRLT, + STRGT, + INTEQ, + INTNE, + INTGE, + INTGT, + INTLE, + INTLT, + UNOT, + BAND, + BOR, + LPAREN, + RPAREN, + OPERAND +}; + +enum token_types { + UNOP, + BINOP, + BUNOP, + BBINOP, + PAREN +}; + +static struct t_op { + const char *op_text; + short op_num, op_type; +} const ops [] = { + {"-r", FILRD, UNOP}, + {"-w", FILWR, UNOP}, + {"-x", FILEX, UNOP}, + {"-e", FILEXIST,UNOP}, + {"-f", FILREG, UNOP}, + {"-d", FILDIR, UNOP}, + {"-c", FILCDEV,UNOP}, + {"-b", FILBDEV,UNOP}, + {"-p", FILFIFO,UNOP}, + {"-u", FILSUID,UNOP}, + {"-g", FILSGID,UNOP}, + {"-k", FILSTCK,UNOP}, + {"-s", FILGZ, UNOP}, + {"-t", FILTT, UNOP}, + {"-z", STREZ, UNOP}, + {"-n", STRNZ, UNOP}, + {"-h", FILSYM, UNOP}, /* for backwards compat */ + {"-O", FILUID, UNOP}, + {"-G", FILGID, UNOP}, + {"-L", FILSYM, UNOP}, + {"-S", FILSOCK,UNOP}, + {"=", STREQ, BINOP}, + {"!=", STRNE, BINOP}, + {"<", STRLT, BINOP}, + {">", STRGT, BINOP}, + {"-eq", INTEQ, BINOP}, + {"-ne", INTNE, BINOP}, + {"-ge", INTGE, BINOP}, + {"-gt", INTGT, BINOP}, + {"-le", INTLE, BINOP}, + {"-lt", INTLT, BINOP}, + {"-nt", FILNT, BINOP}, + {"-ot", FILOT, BINOP}, + {"-ef", FILEQ, BINOP}, + {"!", UNOT, BUNOP}, + {"-a", BAND, BBINOP}, + {"-o", BOR, BBINOP}, + {"(", LPAREN, PAREN}, + {")", RPAREN, PAREN}, + {0, 0, 0} +}; + +static char **t_wp; +static struct t_op const *t_wp_op; + +static void syntax(const char *, const char *); +static int oexpr(enum token); +static int aexpr(enum token); +static int nexpr(enum token); +static int primary(enum token); +static int binop(void); +static int filstat(char *, enum token); +static enum token t_lex(char **); +static int isoperand(char **); +static int newerf(const char *, const char *); +static int olderf(const char *, const char *); +static int equalf(const char *, const char *); +#ifdef HAVE_FACCESSAT +static int test_file_access(const char *, int); +#else +static int test_access(const struct stat64 *, int); +#endif + +#ifdef HAVE_FACCESSAT +# ifdef HAVE_TRADITIONAL_FACCESSAT +static inline int faccessat_confused_about_superuser(void) { return 1; } +# else +static inline int faccessat_confused_about_superuser(void) { return 0; } +# endif +#endif + +static inline intmax_t getn(const char *s) +{ + return atomax10(s); +} + +static const struct t_op *getop(const char *s) +{ + const struct t_op *op; + + for (op = ops; op->op_text; op++) { + if (strcmp(s, op->op_text) == 0) + return op; + } + + return NULL; +} + +int +testcmd(int argc, char **argv) +{ + const struct t_op *op; + enum token n; + int res = 1; + + if (*argv[0] == '[') { + if (*argv[--argc] != ']') + error("missing ]"); + argv[argc] = NULL; + } + + t_wp_op = NULL; + +recheck: + argv++; + argc--; + + if (argc < 1) + return res; + + /* + * POSIX prescriptions: he who wrote this deserves the Nobel + * peace prize. + */ + switch (argc) { + case 3: + op = getop(argv[1]); + if (op && op->op_type == BINOP) { + n = OPERAND; + goto eval; + } + /* fall through */ + + case 4: + if (!strcmp(argv[0], "(") && !strcmp(argv[argc - 1], ")")) { + argv[--argc] = NULL; + argv++; + argc--; + } else if (!strcmp(argv[0], "!")) { + res = 0; + goto recheck; + } + } + + n = t_lex(argv); + +eval: + t_wp = argv; + res ^= oexpr(n); + argv = t_wp; + + if (argv[0] != NULL && argv[1] != NULL) + syntax(argv[0], "unexpected operator"); + + return res; +} + +static void +syntax(const char *op, const char *msg) +{ + if (op && *op) + error("%s: %s", op, msg); + else + error("%s", msg); +} + +static int +oexpr(enum token n) +{ + int res = 0; + + for (;;) { + res |= aexpr(n); + n = t_lex(t_wp + 1); + if (n != BOR) + break; + n = t_lex(t_wp += 2); + } + return res; +} + +static int +aexpr(enum token n) +{ + int res = 1; + + for (;;) { + if (!nexpr(n)) + res = 0; + n = t_lex(t_wp + 1); + if (n != BAND) + break; + n = t_lex(t_wp += 2); + } + return res; +} + +static int +nexpr(enum token n) +{ + if (n != UNOT) + return primary(n); + + n = t_lex(t_wp + 1); + if (n != EOI) + t_wp++; + return !nexpr(n); +} + +static int +primary(enum token n) +{ + enum token nn; + int res; + + if (n == EOI) + return 0; /* missing expression */ + if (n == LPAREN) { + if ((nn = t_lex(++t_wp)) == RPAREN) + return 0; /* missing expression */ + res = oexpr(nn); + if (t_lex(++t_wp) != RPAREN) + syntax(NULL, "closing paren expected"); + return res; + } + if (t_wp_op && t_wp_op->op_type == UNOP) { + /* unary expression */ + if (*++t_wp == NULL) + syntax(t_wp_op->op_text, "argument expected"); + switch (n) { + case STREZ: + return strlen(*t_wp) == 0; + case STRNZ: + return strlen(*t_wp) != 0; + case FILTT: + return isatty(getn(*t_wp)); +#ifdef HAVE_FACCESSAT + case FILRD: + return test_file_access(*t_wp, R_OK); + case FILWR: + return test_file_access(*t_wp, W_OK); + case FILEX: + return test_file_access(*t_wp, X_OK); +#endif + default: + return filstat(*t_wp, n); + } + } + + if (t_lex(t_wp + 1), t_wp_op && t_wp_op->op_type == BINOP) { + return binop(); + } + + return strlen(*t_wp) > 0; +} + +static int +binop(void) +{ + const char *opnd1, *opnd2; + struct t_op const *op; + + opnd1 = *t_wp; + (void) t_lex(++t_wp); + op = t_wp_op; + + if ((opnd2 = *++t_wp) == (char *)0) + syntax(op->op_text, "argument expected"); + + switch (op->op_num) { + default: +#ifdef DEBUG + abort(); + /* NOTREACHED */ +#endif + case STREQ: + return strcmp(opnd1, opnd2) == 0; + case STRNE: + return strcmp(opnd1, opnd2) != 0; + case STRLT: + return strcmp(opnd1, opnd2) < 0; + case STRGT: + return strcmp(opnd1, opnd2) > 0; + case INTEQ: + return getn(opnd1) == getn(opnd2); + case INTNE: + return getn(opnd1) != getn(opnd2); + case INTGE: + return getn(opnd1) >= getn(opnd2); + case INTGT: + return getn(opnd1) > getn(opnd2); + case INTLE: + return getn(opnd1) <= getn(opnd2); + case INTLT: + return getn(opnd1) < getn(opnd2); + case FILNT: + return newerf (opnd1, opnd2); + case FILOT: + return olderf (opnd1, opnd2); + case FILEQ: + return equalf (opnd1, opnd2); + } +} + +static int +filstat(char *nm, enum token mode) +{ + struct stat64 s; + + if (mode == FILSYM ? lstat64(nm, &s) : stat64(nm, &s)) + return 0; + + switch (mode) { +#ifndef HAVE_FACCESSAT + case FILRD: + return test_access(&s, R_OK); + case FILWR: + return test_access(&s, W_OK); + case FILEX: + return test_access(&s, X_OK); +#endif + case FILEXIST: + return 1; + case FILREG: + return S_ISREG(s.st_mode); + case FILDIR: + return S_ISDIR(s.st_mode); + case FILCDEV: + return S_ISCHR(s.st_mode); + case FILBDEV: + return S_ISBLK(s.st_mode); + case FILFIFO: + return S_ISFIFO(s.st_mode); + case FILSOCK: + return S_ISSOCK(s.st_mode); + case FILSYM: + return S_ISLNK(s.st_mode); + case FILSUID: + return (s.st_mode & S_ISUID) != 0; + case FILSGID: + return (s.st_mode & S_ISGID) != 0; + case FILSTCK: + return (s.st_mode & S_ISVTX) != 0; + case FILGZ: + return !!s.st_size; + case FILUID: + return s.st_uid == geteuid(); + case FILGID: + return s.st_gid == getegid(); + default: + return 1; + } +} + +static enum token t_lex(char **tp) +{ + struct t_op const *op; + char *s = *tp; + + if (s == 0) { + t_wp_op = (struct t_op *)0; + return EOI; + } + + op = getop(s); + if (op && !(op->op_type == UNOP && isoperand(tp)) && + !(op->op_num == LPAREN && !tp[1])) { + t_wp_op = op; + return op->op_num; + } + + t_wp_op = (struct t_op *)0; + return OPERAND; +} + +static int isoperand(char **tp) +{ + struct t_op const *op; + char *s; + + if (!(s = tp[1])) + return 1; + if (!tp[2]) + return 0; + + op = getop(s); + return op && op->op_type == BINOP; +} + +static int +newerf (const char *f1, const char *f2) +{ + struct stat64 b1, b2; + +#ifdef HAVE_ST_MTIM + return (stat64(f1, &b1) == 0 && + stat64(f2, &b2) == 0 && + ( b1.st_mtim.tv_sec > b2.st_mtim.tv_sec || + (b1.st_mtim.tv_sec == b2.st_mtim.tv_sec && (b1.st_mtim.tv_nsec > b2.st_mtim.tv_nsec ))) + ); +#else + return (stat64(f1, &b1) == 0 && + stat64(f2, &b2) == 0 && + b1.st_mtime > b2.st_mtime); +#endif +} + +static int +olderf (const char *f1, const char *f2) +{ + struct stat64 b1, b2; + +#ifdef HAVE_ST_MTIM + return (stat64(f1, &b1) == 0 && + stat64(f2, &b2) == 0 && + (b1.st_mtim.tv_sec < b2.st_mtim.tv_sec || + (b1.st_mtim.tv_sec == b2.st_mtim.tv_sec && (b1.st_mtim.tv_nsec < b2.st_mtim.tv_nsec ))) + ); +#else + return (stat64(f1, &b1) == 0 && + stat64(f2, &b2) == 0 && + b1.st_mtime < b2.st_mtime); +#endif +} + +static int +equalf (const char *f1, const char *f2) +{ + struct stat64 b1, b2; + + return (stat64(f1, &b1) == 0 && + stat64(f2, &b2) == 0 && + b1.st_dev == b2.st_dev && + b1.st_ino == b2.st_ino); +} + +#ifdef HAVE_FACCESSAT +static int has_exec_bit_set(const char *path) +{ + struct stat64 st; + + if (stat64(path, &st)) + return 0; + return st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH); +} + +static int test_file_access(const char *path, int mode) +{ + if (faccessat_confused_about_superuser() && + mode == X_OK && geteuid() == 0 && !has_exec_bit_set(path)) + return 0; + return !faccessat(AT_FDCWD, path, mode, AT_EACCESS); +} +#else /* HAVE_FACCESSAT */ +/* + * The manual, and IEEE POSIX 1003.2, suggests this should check the mode bits, + * not use access(): + * + * True shall indicate only that the write flag is on. The file is not + * writable on a read-only file system even if this test indicates true. + * + * Unfortunately IEEE POSIX 1003.1-2001, as quoted in SuSv3, says only: + * + * True shall indicate that permission to read from file will be granted, + * as defined in "File Read, Write, and Creation". + * + * and that section says: + * + * When a file is to be read or written, the file shall be opened with an + * access mode corresponding to the operation to be performed. If file + * access permissions deny access, the requested operation shall fail. + * + * and of course access permissions are described as one might expect: + * + * * If a process has the appropriate privilege: + * + * * If read, write, or directory search permission is requested, + * access shall be granted. + * + * * If execute permission is requested, access shall be granted if + * execute permission is granted to at least one user by the file + * permission bits or by an alternate access control mechanism; + * otherwise, access shall be denied. + * + * * Otherwise: + * + * * The file permission bits of a file contain read, write, and + * execute/search permissions for the file owner class, file group + * class, and file other class. + * + * * Access shall be granted if an alternate access control mechanism + * is not enabled and the requested access permission bit is set for + * the class (file owner class, file group class, or file other class) + * to which the process belongs, or if an alternate access control + * mechanism is enabled and it allows the requested access; otherwise, + * access shall be denied. + * + * and when I first read this I thought: surely we can't go about using + * open(O_WRONLY) to try this test! However the POSIX 1003.1-2001 Rationale + * section for test does in fact say: + * + * On historical BSD systems, test -w directory always returned false + * because test tried to open the directory for writing, which always + * fails. + * + * and indeed this is in fact true for Seventh Edition UNIX, UNIX 32V, and UNIX + * System III, and thus presumably also for BSD up to and including 4.3. + * + * Secondly I remembered why using open() and/or access() are bogus. They + * don't work right for detecting read and write permissions bits when called + * by root. + * + * Interestingly the 'test' in 4.4BSD was closer to correct (as per + * 1003.2-1992) and it was implemented efficiently with stat() instead of + * open(). + * + * This was apparently broken in NetBSD around about 1994/06/30 when the old + * 4.4BSD implementation was replaced with a (arguably much better coded) + * implementation derived from pdksh. + * + * Note that modern pdksh is yet different again, but still not correct, at + * least not w.r.t. 1003.2-1992. + * + * As I think more about it and read more of the related IEEE docs I don't like + * that wording about 'test -r' and 'test -w' in 1003.1-2001 at all. I very + * much prefer the original wording in 1003.2-1992. It is much more useful, + * and so that's what I've implemented. + * + * (Note that a strictly conforming implementation of 1003.1-2001 is in fact + * totally useless for the case in question since its 'test -w' and 'test -r' + * can never fail for root for any existing files, i.e. files for which 'test + * -e' succeeds.) + * + * The rationale for 1003.1-2001 suggests that the wording was "clarified" in + * 1003.1-2001 to align with the 1003.2b draft. 1003.2b Draft 12 (July 1999), + * which is the latest copy I have, does carry the same suggested wording as is + * in 1003.1-2001, with its rationale saying: + * + * This change is a clarification and is the result of interpretation + * request PASC 1003.2-92 #23 submitted for IEEE Std 1003.2-1992. + * + * That interpretation can be found here: + * + * http://www.pasc.org/interps/unofficial/db/p1003.2/pasc-1003.2-23.html + * + * Not terribly helpful, unfortunately. I wonder who that fence sitter was. + * + * Worse, IMVNSHO, I think the authors of 1003.2b-D12 have mis-interpreted the + * PASC interpretation and appear to be gone against at least one widely used + * implementation (namely 4.4BSD). The problem is that for file access by root + * this means that if test '-r' and '-w' are to behave as if open() were called + * then there's no way for a shell script running as root to check if a file + * has certain access bits set other than by the grotty means of interpreting + * the output of 'ls -l'. This was widely considered to be a bug in V7's + * "test" and is, I believe, one of the reasons why direct use of access() was + * avoided in some more recent implementations! + * + * I have always interpreted '-r' to match '-w' and '-x' as per the original + * wording in 1003.2-1992, not the other way around. I think 1003.2b goes much + * too far the wrong way without any valid rationale and that it's best if we + * stick with 1003.2-1992 and test the flags, and not mimic the behaviour of + * open() since we already know very well how it will work -- existance of the + * file is all that matters to open() for root. + * + * Unfortunately the SVID is no help at all (which is, I guess, partly why + * we're in this mess in the first place :-). + * + * The SysV implementation (at least in the 'test' builtin in /bin/sh) does use + * access(name, 2) even though it also goes to much greater lengths for '-x' + * matching the 1003.2-1992 definition (which is no doubt where that definition + * came from). + * + * The ksh93 implementation uses access() for '-r' and '-w' if + * (euid==uid&&egid==gid), but uses st_mode for '-x' iff running as root. + * i.e. it does strictly conform to 1003.1-2001 (and presumably 1003.2b). + */ +static int test_access(const struct stat64 *sp, int stmode) +{ + gid_t *groups; + register int n; + uid_t euid; + int maxgroups; + + /* + * I suppose we could use access() if not running as root and if we are + * running with ((euid == uid) && (egid == gid)), but we've already + * done the stat() so we might as well just test the permissions + * directly instead of asking the kernel to do it.... + */ + euid = geteuid(); + if (euid == 0) { + if (stmode != X_OK) + return 1; + + /* any bit is good enough */ + stmode = (stmode << 6) | (stmode << 3) | stmode; + } else if (sp->st_uid == euid) + stmode <<= 6; + else if (sp->st_gid == getegid()) + stmode <<= 3; + else { + /* XXX stolen almost verbatim from ksh93.... */ + /* on some systems you can be in several groups */ + maxgroups = getgroups(0, NULL); + groups = stalloc(maxgroups * sizeof(*groups)); + n = getgroups(maxgroups, groups); + while (--n >= 0) { + if (groups[n] == sp->st_gid) { + stmode <<= 3; + break; + } + } + } + + return sp->st_mode & stmode; +} +#endif /* HAVE_FACCESSAT */ diff --git a/bin/dash/src/bltin/times.c b/bin/dash/src/bltin/times.c new file mode 100644 index 00000000..1166a68e --- /dev/null +++ b/bin/dash/src/bltin/times.c @@ -0,0 +1,42 @@ +/* + * Copyright (c) 1999 Herbert Xu <herbert@gondor.apana.org.au> + * This file contains code for the times builtin. + */ + +#include <sys/times.h> +#include <unistd.h> +#ifdef USE_GLIBC_STDIO +#include <stdio.h> +#else +#include "bltin.h" +#endif +#include "system.h" + +int timescmd() { + struct tms buf; + long int clk_tck = sysconf(_SC_CLK_TCK); + int mutime, mstime, mcutime, mcstime; + double utime, stime, cutime, cstime; + + times(&buf); + + utime = (double)buf.tms_utime / clk_tck; + mutime = utime / 60; + utime -= mutime * 60.0; + + stime = (double)buf.tms_stime / clk_tck; + mstime = stime / 60; + stime -= mstime * 60.0; + + cutime = (double)buf.tms_cutime / clk_tck; + mcutime = cutime / 60; + cutime -= mcutime * 60.0; + + cstime = (double)buf.tms_cstime / clk_tck; + mcstime = cstime / 60; + cstime -= mcstime * 60.0; + + printf("%dm%fs %dm%fs\n%dm%fs %dm%fs\n", mutime, utime, mstime, stime, + mcutime, cutime, mcstime, cstime); + return 0; +} diff --git a/bin/dash/src/builtins.def.in b/bin/dash/src/builtins.def.in new file mode 100644 index 00000000..95e420cc --- /dev/null +++ b/bin/dash/src/builtins.def.in @@ -0,0 +1,94 @@ +/* + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)builtins.def 8.4 (Berkeley) 5/4/95 + */ + +/* + * This file lists all the builtin commands. The first column is the name + * of a C routine. + * The -a flag specifies that this is a posix 'assignment builtin' command. + * The -s flag specifies that this is a posix 'special builtin' command. + * The -u flag specifies that this is a posix 'standard utility'. + * The -n flag specifies that this command has a special entry point. + * The rest of the line specifies the command name or names used to run + * the command. + */ + +#ifndef JOBS +#define JOBS 1 +#endif + +#if JOBS +bgcmd -u bg +fgcmd -u fg +#endif + +#ifndef SMALL +histcmd -u fc +#endif + +breakcmd -s break -s continue +cdcmd -u cd chdir +commandcmd -u command +dotcmd -s . +echocmd echo +evalcmd -ns eval +execcmd -s exec +exitcmd -s exit +exportcmd -as export -as readonly +falsecmd -u false +getoptscmd -u getopts +hashcmd -u hash +jobscmd -u jobs +localcmd -as local +printfcmd printf +pwdcmd -u pwd +readcmd -u read +returncmd -s return +setcmd -s set +shiftcmd -s shift +timescmd -s times +trapcmd -s trap +truecmd -s : -u true +typecmd -u type +umaskcmd -u umask +unaliascmd -u unalias +unsetcmd -s unset +waitcmd -u wait +aliascmd -au alias +#ifdef HAVE_GETRLIMIT +ulimitcmd -u ulimit +#endif +testcmd test [ +killcmd -u kill diff --git a/bin/dash/src/cd.c b/bin/dash/src/cd.c new file mode 100644 index 00000000..1ef1dc56 --- /dev/null +++ b/bin/dash/src/cd.c @@ -0,0 +1,332 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <limits.h> +#ifdef __CYGWIN__ +#include <sys/cygwin.h> +#endif + +/* + * The cd and pwd commands. + */ + +#include "shell.h" +#include "var.h" +#include "nodes.h" /* for jobs.h */ +#include "jobs.h" +#include "options.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "exec.h" +#include "redir.h" +#include "main.h" +#include "mystring.h" +#include "show.h" +#include "cd.h" + +#define CD_PHYSICAL 1 +#define CD_PRINT 2 + +STATIC int docd(const char *, int); +STATIC const char *updatepwd(const char *); +STATIC char *getpwd(void); +STATIC int cdopt(void); + +STATIC char *curdir = nullstr; /* current working directory */ +STATIC char *physdir = nullstr; /* physical working directory */ + +STATIC int +cdopt() +{ + int flags = 0; + int i, j; + + j = 'L'; + while ((i = nextopt("LP"))) { + if (i != j) { + flags ^= CD_PHYSICAL; + j = i; + } + } + + return flags; +} + +int +cdcmd(int argc, char **argv) +{ + const char *dest; + const char *path; + const char *p; + char c; + struct stat64 statb; + int flags; + int len; + + flags = cdopt(); + dest = *argptr; + if (!dest) + dest = bltinlookup(homestr); + else if (dest[0] == '-' && dest[1] == '\0') { + dest = bltinlookup("OLDPWD"); + flags |= CD_PRINT; + } + if (!dest) + dest = nullstr; + if (*dest == '/') + goto step6; + if (*dest == '.') { + c = dest[1]; +dotdot: + switch (c) { + case '\0': + case '/': + goto step6; + case '.': + c = dest[2]; + if (c != '.') + goto dotdot; + } + } + if (!*dest) + dest = "."; + path = bltinlookup("CDPATH"); + while (p = path, (len = padvance_magic(&path, dest, 0)) >= 0) { + c = *p; + p = stalloc(len); + + if (stat64(p, &statb) >= 0 && S_ISDIR(statb.st_mode)) { + if (c && c != ':') + flags |= CD_PRINT; +docd: + if (!docd(p, flags)) + goto out; + goto err; + } + } + +step6: + p = dest; + goto docd; + +err: + sh_error("can't cd to %s", dest); + /* NOTREACHED */ +out: + if (flags & CD_PRINT) + out1fmt(snlfmt, curdir); + return 0; +} + + +/* + * Actually do the chdir. We also call hashcd to let the routines in exec.c + * know that the current directory has changed. + */ + +STATIC int +docd(const char *dest, int flags) +{ + const char *dir = 0; + int err; + + TRACE(("docd(\"%s\", %d) called\n", dest, flags)); + + INTOFF; + if (!(flags & CD_PHYSICAL)) { + dir = updatepwd(dest); + if (dir) + dest = dir; + } + err = chdir(dest); + if (err) + goto out; + setpwd(dir, 1); + hashcd(); +out: + INTON; + return err; +} + + +/* + * Update curdir (the name of the current directory) in response to a + * cd command. + */ + +STATIC const char * +updatepwd(const char *dir) +{ + char *new; + char *p; + char *cdcomppath; + const char *lim; + +#ifdef __CYGWIN__ + /* On cygwin, thanks to drive letters, some absolute paths do + not begin with slash; but cygwin includes a function that + forces normalization to the posix form */ + char pathbuf[PATH_MAX]; + if (cygwin_conv_path(CCP_WIN_A_TO_POSIX | CCP_RELATIVE, dir, pathbuf, + sizeof(pathbuf)) < 0) + sh_error("can't normalize %s", dir); + dir = pathbuf; +#endif + + cdcomppath = sstrdup(dir); + STARTSTACKSTR(new); + if (*dir != '/') { + if (curdir == nullstr) + return 0; + new = stputs(curdir, new); + } + new = makestrspace(strlen(dir) + 2, new); + lim = stackblock() + 1; + if (*dir != '/') { + if (new[-1] != '/') + USTPUTC('/', new); + if (new > lim && *lim == '/') + lim++; + } else { + USTPUTC('/', new); + cdcomppath++; + if (dir[1] == '/' && dir[2] != '/') { + USTPUTC('/', new); + cdcomppath++; + lim++; + } + } + p = strtok(cdcomppath, "/"); + while (p) { + switch(*p) { + case '.': + if (p[1] == '.' && p[2] == '\0') { + while (new > lim) { + STUNPUTC(new); + if (new[-1] == '/') + break; + } + break; + } else if (p[1] == '\0') + break; + /* fall through */ + default: + new = stputs(p, new); + USTPUTC('/', new); + } + p = strtok(0, "/"); + } + if (new > lim) + STUNPUTC(new); + *new = 0; + return stackblock(); +} + + +/* + * Find out what the current directory is. If we already know the current + * directory, this routine returns immediately. + */ +inline +STATIC char * +getpwd() +{ +#ifdef __GLIBC__ + char *dir = getcwd(0, 0); + + if (dir) + return dir; +#else + char buf[PATH_MAX]; + + if (getcwd(buf, sizeof(buf))) + return savestr(buf); +#endif + + sh_warnx("getcwd() failed: %s", strerror(errno)); + return nullstr; +} + +int +pwdcmd(int argc, char **argv) +{ + int flags; + const char *dir = curdir; + + flags = cdopt(); + if (flags) { + if (physdir == nullstr) + setpwd(dir, 0); + dir = physdir; + } + out1fmt(snlfmt, dir); + return 0; +} + +void +setpwd(const char *val, int setold) +{ + char *oldcur, *dir; + + oldcur = dir = curdir; + + if (setold) { + setvar("OLDPWD", oldcur, VEXPORT); + } + INTOFF; + if (physdir != nullstr) { + if (physdir != oldcur) + free(physdir); + physdir = nullstr; + } + if (oldcur == val || !val) { + char *s = getpwd(); + physdir = s; + if (!val) + dir = s; + } else + dir = savestr(val); + if (oldcur != dir && oldcur != nullstr) { + free(oldcur); + } + curdir = dir; + INTON; + setvar("PWD", dir, VEXPORT); +} diff --git a/bin/dash/src/cd.h b/bin/dash/src/cd.h new file mode 100644 index 00000000..87631619 --- /dev/null +++ b/bin/dash/src/cd.h @@ -0,0 +1,35 @@ +/*- + * Copyright (c) 1995 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +int cdcmd(int, char **); +int pwdcmd(int, char **); +void setpwd(const char *, int); diff --git a/bin/dash/src/dash.1 b/bin/dash/src/dash.1 new file mode 100644 index 00000000..9bc51cd6 --- /dev/null +++ b/bin/dash/src/dash.1 @@ -0,0 +1,2361 @@ +.\" Copyright (c) 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" Copyright (c) 1997-2005 +.\" Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Kenneth Almquist. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)sh.1 8.6 (Berkeley) 5/4/95 +.\" +.Dd December 22, 2020 +.Os +.Dt DASH 1 +.Sh NAME +.Nm dash +.Nd command interpreter (shell) +.Sh SYNOPSIS +.Nm +.Bk -words +.Op Fl aCefnuvxIimqVEb +.Op Cm +aCefnuvxIimqVEb +.Ek +.Bk -words +.Op Fl o Ar option_name +.Op Cm +o Ar option_name +.Ek +.Bk -words +.Op Ar command_file Oo Ar argument ... Oc +.Ek +.Nm +.Fl c +.Bk -words +.Op Fl aCefnuvxIimqVEb +.Op Cm +aCefnuvxIimqVEb +.Ek +.Bk -words +.Op Fl o Ar option_name +.Op Cm +o Ar option_name +.Ek +.Bk -words +.Ar command_string +.Op Ar command_name Oo Ar argument ... Oc +.Ek +.Nm +.Fl s +.Bk -words +.Op Fl aCefnuvxIimqVEb +.Op Cm +aCefnuvxIimqVEb +.Ek +.Bk -words +.Op Fl o Ar option_name +.Op Cm +o Ar option_name +.Ek +.Bk -words +.Op Ar argument ... +.Ek +.Sh DESCRIPTION +.Nm +is the standard command interpreter for the system. +The current version of +.Nm +is in the process of being changed to conform with the +.Tn POSIX +1003.2 and 1003.2a specifications for the shell. +This version has many +features which make it appear similar in some respects to the Korn shell, +but it is not a Korn shell clone (see +.Xr ksh 1 ) . +Only features designated by +.Tn POSIX , +plus a few Berkeley extensions, are being incorporated into this shell. +This man page is not intended +to be a tutorial or a complete specification of the shell. +.Ss Overview +The shell is a command that reads lines from either a file or the +terminal, interprets them, and generally executes other commands. +It is the program that is running when a user logs into the system +(although a user can select a different shell with the +.Xr chsh 1 +command). +The shell implements a language that has flow control +constructs, a macro facility that provides a variety of features in +addition to data storage, along with built in history and line editing +capabilities. +It incorporates many features to aid interactive use and +has the advantage that the interpretative language is common to both +interactive and non-interactive use (shell scripts). +That is, commands +can be typed directly to the running shell or can be put into a file and +the file can be executed directly by the shell. +.Ss Invocation +If no args are present and if the standard input of the shell +is connected to a terminal (or if the +.Fl i +flag is set), +and the +.Fl c +option is not present, the shell is considered an interactive shell. +An interactive shell generally prompts before each command and handles +programming and command errors differently (as described below). +When first starting, +the shell inspects argument 0, and if it begins with a dash +.Sq - , +the shell is also considered +a login shell. +This is normally done automatically by the system +when the user first logs in. +A login shell first reads commands +from the files +.Pa /etc/profile +and +.Pa .profile +if they exist. +If the environment variable +.Ev ENV +is set on entry to an interactive shell, or is set in the +.Pa .profile +of a login shell, the shell next reads +commands from the file named in +.Ev ENV . +Therefore, a user should place commands that are to be executed only at +login time in the +.Pa .profile +file, and commands that are executed for every interactive shell inside the +.Ev ENV +file. +To set the +.Ev ENV +variable to some file, place the following line in your +.Pa .profile +of your home directory +.Pp +.Dl ENV=$HOME/.shinit; export ENV +.Pp +substituting for +.Dq .shinit +any filename you wish. +.Pp +If command line arguments besides the options have been specified, then +the shell treats the first argument as the name of a file from which to +read commands (a shell script), and the remaining arguments are set as the +positional parameters of the shell ($1, $2, etc). +Otherwise, the shell +reads commands from its standard input. +.Ss Argument List Processing +All of the single letter options that have a corresponding name can be +used as an argument to the +.Fl o +option. +The set +.Fl o +name is provided next to the single letter option in +the description below. +Specifying a dash +.Dq - +turns the option on, while using a plus +.Dq + +disables the option. +The following options can be set from the command line or +with the +.Ic set +builtin (described later). +.Bl -tag -width aaaallexportfoo -offset indent +.It Fl a Em allexport +Export all variables assigned to. +.It Fl c +Read commands from the +.Ar command_string +operand instead of from the standard input. +Special parameter 0 will be set from the +.Ar command_name +operand and the positional parameters ($1, $2, etc.) +set from the remaining argument operands. +.It Fl C Em noclobber +Don't overwrite existing files with +.Dq \*[Gt] . +.It Fl e Em errexit +If not interactive, exit immediately if any untested command fails. +The exit status of a command is considered to be +explicitly tested if the command is used to control an +.Ic if , +.Ic elif , +.Ic while , +or +.Ic until ; +or if the command is the left hand operand of an +.Dq && +or +.Dq || +operator. +.It Fl f Em noglob +Disable pathname expansion. +.It Fl n Em noexec +If not interactive, read commands but do not execute them. +This is useful for checking the syntax of shell scripts. +.It Fl u Em nounset +Write a message to standard error when attempting to expand a variable +that is not set, and if the shell is not interactive, exit immediately. +.It Fl v Em verbose +The shell writes its input to standard error as it is read. +Useful for debugging. +.It Fl x Em xtrace +Write each command to standard error (preceded by a +.Sq +\ ) +before it is executed. +Useful for debugging. +.It Fl I Em ignoreeof +Ignore EOF's from input when interactive. +.It Fl i Em interactive +Force the shell to behave interactively. +.It Fl l +Make dash act as if it had been invoked as a login shell. +.It Fl m Em monitor +Turn on job control (set automatically when interactive). +.It Fl s Em stdin +Read commands from standard input (set automatically if no file arguments +are present). +This option has no effect when set after the shell has +already started running (i.e. with +.Ic set ) . +.It Fl V Em vi +Enable the built-in +.Xr vi 1 +command line editor (disables +.Fl E +if it has been set). +.It Fl E Em emacs +Enable the built-in +.Xr emacs 1 +command line editor (disables +.Fl V +if it has been set). +.It Fl b Em notify +Enable asynchronous notification of background job completion. +(UNIMPLEMENTED for 4.4alpha) +.El +.Ss Lexical Structure +The shell reads input in terms of lines from a file and breaks it up into +words at whitespace (blanks and tabs), and at certain sequences of +characters that are special to the shell called +.Dq operators . +There are two types of operators: control operators and redirection +operators (their meaning is discussed later). +Following is a list of operators: +.Bl -ohang -offset indent +.It "Control operators:" +.Dl & && \&( \&) \&; ;; | || \*[Lt]newline\*[Gt] +.It "Redirection operators:" +.Dl \*[Lt] \*[Gt] \*[Gt]| \*[Lt]\*[Lt] \*[Gt]\*[Gt] \*[Lt]& \*[Gt]& \*[Lt]\*[Lt]- \*[Lt]\*[Gt] +.El +.Ss Quoting +Quoting is used to remove the special meaning of certain characters or +words to the shell, such as operators, whitespace, or keywords. +There are three types of quoting: matched single quotes, +matched double quotes, and backslash. +.Ss Backslash +A backslash preserves the literal meaning of the following +character, with the exception of +.Aq newline . +A backslash preceding a +.Aq newline +is treated as a line continuation. +.Ss Single Quotes +Enclosing characters in single quotes preserves the literal meaning of all +the characters (except single quotes, making it impossible to put +single-quotes in a single-quoted string). +.Ss Double Quotes +Enclosing characters within double quotes preserves the literal +meaning of all characters except dollarsign +.Pq $ , +backquote +.Pq ` , +and backslash +.Pq \e . +The backslash inside double quotes is historically weird, and serves to +quote only the following characters: +.Dl $ ` \*q \e \*[Lt]newline\*[Gt] . +Otherwise it remains literal. +.Ss Reserved Words +Reserved words are words that have special meaning to the +shell and are recognized at the beginning of a line and +after a control operator. +The following are reserved words: +.Bl -column while while while while while -offset indent +.It ! Ta elif Ta fi Ta while Ta case +.It else Ta for Ta then Ta { Ta } +.It do Ta done Ta until Ta if Ta esac +.El +.Pp +Their meaning is discussed later. +.Ss Aliases +An alias is a name and corresponding value set using the +.Xr alias 1 +builtin command. +Whenever a reserved word may occur (see above), +and after checking for reserved words, the shell +checks the word to see if it matches an alias. +If it does, it replaces it in the input stream with its value. +For example, if there is an alias called +.Dq lf +with the value +.Dq "ls -F" , +then the input: +.Pp +.Dl lf foobar Aq return +.Pp +would become +.Pp +.Dl ls -F foobar Aq return +.Pp +Aliases provide a convenient way for naive users to create shorthands for +commands without having to learn how to create functions with arguments. +They can also be used to create lexically obscure code. +This use is discouraged. +.Ss Commands +The shell interprets the words it reads according to a language, the +specification of which is outside the scope of this man page (refer to the +BNF in the +.Tn POSIX +1003.2 document). +Essentially though, a line is read and if the first +word of the line (or after a control operator) is not a reserved word, +then the shell has recognized a simple command. +Otherwise, a complex +command or some other special construct may have been recognized. +.Ss Simple Commands +If a simple command has been recognized, the shell performs +the following actions: +.Bl -enum -offset indent +.It +Leading words of the form +.Dq name=value +are stripped off and assigned to the environment of the simple command. +Redirection operators and their arguments (as described below) are +stripped off and saved for processing. +.It +The remaining words are expanded as described in +the section called +.Dq Expansions , +and the first remaining word is considered the command name and the +command is located. +The remaining words are considered the arguments of the command. +If no command name resulted, then the +.Dq name=value +variable assignments recognized in item 1 affect the current shell. +.It +Redirections are performed as described in the next section. +.El +.Ss Redirections +Redirections are used to change where a command reads its input or sends +its output. +In general, redirections open, close, or duplicate an +existing reference to a file. +The overall format used for redirection is: +.Pp +.Dl [n] Va redir-op Ar file +.Pp +where +.Va redir-op +is one of the redirection operators mentioned previously. +Following is a list of the possible redirections. +The +.Bq n +is an optional number between 0 and 9, as in +.Sq 3 +(not +.Sq Bq 3 ) , +that refers to a file descriptor. +.Bl -tag -width aaabsfiles -offset indent +.It [n] Ns \*[Gt] file +Redirect standard output (or n) to file. +.It [n] Ns \*[Gt]| file +Same, but override the +.Fl C +option. +.It [n] Ns \*[Gt]\*[Gt] file +Append standard output (or n) to file. +.It [n] Ns \*[Lt] file +Redirect standard input (or n) from file. +.It [n1] Ns \*[Lt]& Ns n2 +Copy file descriptor n2 as stdout (or fd n1). +fd n2. +.It [n] Ns \*[Lt]&- +Close standard input (or n). +.It [n1] Ns \*[Gt]& Ns n2 +Copy file descriptor n2 as stdin (or fd n1). +fd n2. +.It [n] Ns \*[Gt]&- +Close standard output (or n). +.It [n] Ns \*[Lt]\*[Gt] file +Open file for reading and writing on standard input (or n). +.El +.Pp +The following redirection is often called a +.Dq here-document . +.Bl -item -offset indent +.It +.Li [n]\*[Lt]\*[Lt] delimiter +.Dl here-doc-text ... +.Li delimiter +.El +.Pp +All the text on successive lines up to the delimiter is saved away and +made available to the command on standard input, or file descriptor n if +it is specified. +If the delimiter as specified on the initial line is +quoted, then the here-doc-text is treated literally, otherwise the text is +subjected to parameter expansion, command substitution, and arithmetic +expansion (as described in the section on +.Dq Expansions ) . +If the operator is +.Dq \*[Lt]\*[Lt]- +instead of +.Dq \*[Lt]\*[Lt] , +then leading tabs in the here-doc-text are stripped. +.Ss Search and Execution +There are three types of commands: shell functions, builtin commands, and +normal programs -- and the command is searched for (by name) in that order. +They each are executed in a different way. +.Pp +When a shell function is executed, all of the shell positional parameters +(except $0, which remains unchanged) are set to the arguments of the shell +function. +The variables which are explicitly placed in the environment of +the command (by placing assignments to them before the function name) are +made local to the function and are set to the values given. +Then the command given in the function definition is executed. +The positional parameters are restored to their original values +when the command completes. +This all occurs within the current shell. +.Pp +Shell builtins are executed internally to the shell, without spawning a +new process. +.Pp +Otherwise, if the command name doesn't match a function or builtin, the +command is searched for as a normal program in the file system (as +described in the next section). +When a normal program is executed, the shell runs the program, +passing the arguments and the environment to the program. +If the program is not a normal executable file (i.e., if it does +not begin with the "magic number" whose +.Tn ASCII +representation is "#!", so +.Xr execve 2 +returns +.Er ENOEXEC +then) the shell will interpret the program in a subshell. +The child shell will reinitialize itself in this case, +so that the effect will be as if a +new shell had been invoked to handle the ad-hoc shell script, except that +the location of hashed commands located in the parent shell will be +remembered by the child. +.Pp +Note that previous versions of this document and the source code itself +misleadingly and sporadically refer to a shell script without a magic +number as a "shell procedure". +.Ss Path Search +When locating a command, the shell first looks to see if it has a shell +function by that name. +Then it looks for a builtin command by that name. +If a builtin command is not found, one of two things happen: +.Bl -enum +.It +Command names containing a slash are simply executed without performing +any searches. +.It +The shell searches each entry in +.Ev PATH +in turn for the command. +The value of the +.Ev PATH +variable should be a series of entries separated by colons. +Each entry consists of a directory name. +The current directory may be indicated +implicitly by an empty directory name, or explicitly by a single period. +.El +.Ss Command Exit Status +Each command has an exit status that can influence the behaviour +of other shell commands. +The paradigm is that a command exits +with zero for normal or success, and non-zero for failure, +error, or a false indication. +The man page for each command +should indicate the various exit codes and what they mean. +Additionally, the builtin commands return exit codes, as does +an executed shell function. +.Pp +If a command consists entirely of variable assignments then the +exit status of the command is that of the last command substitution +if any, otherwise 0. +.Ss Complex Commands +Complex commands are combinations of simple commands with control +operators or reserved words, together creating a larger complex command. +More generally, a command is one of the following: +.Bl -bullet +.It +simple command +.It +pipeline +.It +list or compound-list +.It +compound command +.It +function definition +.El +.Pp +Unless otherwise stated, the exit status of a command is that of the last +simple command executed by the command. +.Ss Pipelines +A pipeline is a sequence of one or more commands separated +by the control operator |. +The standard output of all but +the last command is connected to the standard input +of the next command. +The standard output of the last +command is inherited from the shell, as usual. +.Pp +The format for a pipeline is: +.Pp +.Dl [!] command1 [ | command2 ...] +.Pp +The standard output of command1 is connected to the standard input of +command2. +The standard input, standard output, or both of a command is +considered to be assigned by the pipeline before any redirection specified +by redirection operators that are part of the command. +.Pp +If the pipeline is not in the background (discussed later), the shell +waits for all commands to complete. +.Pp +If the reserved word ! does not precede the pipeline, the exit status is +the exit status of the last command specified in the pipeline. +Otherwise, the exit status is the logical NOT of the exit status of the +last command. +That is, if the last command returns zero, the exit status +is 1; if the last command returns greater than zero, the exit status is +zero. +.Pp +Because pipeline assignment of standard input or standard output or both +takes place before redirection, it can be modified by redirection. +For example: +.Pp +.Dl $ command1 2\*[Gt]&1 | command2 +.Pp +sends both the standard output and standard error of command1 +to the standard input of command2. +.Pp +A ; or +.Aq newline +terminator causes the preceding AND-OR-list (described +next) to be executed sequentially; a & causes asynchronous execution of +the preceding AND-OR-list. +.Pp +Note that unlike some other shells, each process in the pipeline is a +child of the invoking shell (unless it is a shell builtin, in which case +it executes in the current shell -- but any effect it has on the +environment is wiped). +.Ss Background Commands -- & +If a command is terminated by the control operator ampersand (&), the +shell executes the command asynchronously -- that is, the shell does not +wait for the command to finish before executing the next command. +.Pp +The format for running a command in background is: +.Pp +.Dl command1 & [command2 & ...] +.Pp +If the shell is not interactive, the standard input of an asynchronous +command is set to +.Pa /dev/null . +.Ss Lists -- Generally Speaking +A list is a sequence of zero or more commands separated by newlines, +semicolons, or ampersands, and optionally terminated by one of these three +characters. +The commands in a list are executed in the order they are written. +If command is followed by an ampersand, the shell starts the +command and immediately proceeds onto the next command; otherwise it waits +for the command to terminate before proceeding to the next one. +.Ss Short-Circuit List Operators +.Dq && +and +.Dq || +are AND-OR list operators. +.Dq && +executes the first command, and then executes the second command if and only +if the exit status of the first command is zero. +.Dq || +is similar, but executes the second command if and only if the exit status +of the first command is nonzero. +.Dq && +and +.Dq || +both have the same priority. +.Ss Flow-Control Constructs -- if, while, for, case +The syntax of the if command is +.Bd -literal -offset indent +if list +then list +[ elif list +then list ] ... +[ else list ] +fi +.Ed +.Pp +The syntax of the while command is +.Bd -literal -offset indent +while list +do list +done +.Ed +.Pp +The two lists are executed repeatedly while the exit status of the +first list is zero. +The until command is similar, but has the word +until in place of while, which causes it to +repeat until the exit status of the first list is zero. +.Pp +The syntax of the for command is +.Bd -literal -offset indent +for variable [ in [ word ... ] ] +do list +done +.Ed +.Pp +The words following +.Pa in +are expanded, and then the list is executed repeatedly with the +variable set to each word in turn. +Omitting in word ... is equivalent to in "$@". +.Pp +The syntax of the break and continue command is +.Bd -literal -offset indent +break [ num ] +continue [ num ] +.Ed +.Pp +Break terminates the num innermost for or while loops. +Continue continues with the next iteration of the innermost loop. +These are implemented as builtin commands. +.Pp +The syntax of the case command is +.Bd -literal -offset indent +case word in +[(]pattern) list ;; +\&... +esac +.Ed +.Pp +The pattern can actually be one or more patterns (see +.Sx Shell Patterns +described later), separated by +.Dq \*(Ba +characters. +The +.Do +( +.Dc +character before the pattern is optional. +.Ss Grouping Commands Together +Commands may be grouped by writing either +.Pp +.Dl (list) +.Pp +or +.Pp +.Dl { list; } +.Pp +The first of these executes the commands in a subshell. +Builtin commands grouped into a (list) will not affect the current shell. +The second form does not fork another shell so is slightly more efficient. +Grouping commands together this way allows you to redirect +their output as though they were one program: +.Pp +.Bd -literal -offset indent +{ printf \*q hello \*q ; printf \*q world\\n" ; } \*[Gt] greeting +.Ed +.Pp +Note that +.Dq } +must follow a control operator (here, +.Dq \&; ) +so that it is recognized as a reserved word and not as another command argument. +.Ss Functions +The syntax of a function definition is +.Pp +.Dl name ( ) command +.Pp +A function definition is an executable statement; when executed it +installs a function named name and returns an exit status of zero. +The command is normally a list enclosed between +.Dq { +and +.Dq } . +.Pp +Variables may be declared to be local to a function by using a local +command. +This should appear as the first statement of a function, and the syntax is +.Pp +.Dl local [ variable | - ] ... +.Pp +Local is implemented as a builtin command. +.Pp +When a variable is made local, it inherits the initial value and exported +and readonly flags from the variable with the same name in the surrounding +scope, if there is one. +Otherwise, the variable is initially unset. +The shell uses dynamic scoping, so that if you make the variable x local to +function f, which then calls function g, references to the variable x made +inside g will refer to the variable x declared inside f, not to the global +variable named x. +.Pp +The only special parameter that can be made local is +.Dq - . +Making +.Dq - +local any shell options that are changed via the set command inside the +function to be restored to their original values when the function +returns. +.Pp +The syntax of the return command is +.Pp +.Dl return [ exitstatus ] +.Pp +It terminates the currently executing function. +Return is implemented as a builtin command. +.Ss Variables and Parameters +The shell maintains a set of parameters. +A parameter denoted by a name is called a variable. +When starting up, the shell turns all the environment +variables into shell variables. +New variables can be set using the form +.Pp +.Dl name=value +.Pp +Variables set by the user must have a name consisting solely of +alphabetics, numerics, and underscores - the first of which must not be +numeric. +A parameter can also be denoted by a number or a special +character as explained below. +.Ss Positional Parameters +A positional parameter is a parameter denoted by a number (n \*[Gt] 0). +The shell sets these initially to the values of its command line arguments +that follow the name of the shell script. +The +.Ic set +builtin can also be used to set or reset them. +.Ss Special Parameters +A special parameter is a parameter denoted by one of the following special +characters. +The value of the parameter is listed next to its character. +.Bl -tag -width thinhyphena +.It * +Expands to the positional parameters, starting from one. +When the +expansion occurs within a double-quoted string it expands to a single +field with the value of each parameter separated by the first character of +the +.Ev IFS +variable, or by a +.Aq space +if +.Ev IFS +is unset. +.It @ +Expands to the positional parameters, starting from one. +When the expansion occurs within double-quotes, each positional +parameter expands as a separate argument. +If there are no positional parameters, the +expansion of @ generates zero arguments, even when @ is +double-quoted. +What this basically means, for example, is +if $1 is +.Dq abc +and $2 is +.Dq def ghi , +then +.Qq $@ +expands to +the two arguments: +.Pp +.Sm off +.Dl \*q abc \*q \ \*q def\ ghi \*q +.Sm on +.It # +Expands to the number of positional parameters. +.It ? +Expands to the exit status of the most recent pipeline. +.It - (Hyphen.) +Expands to the current option flags (the single-letter +option names concatenated into a string) as specified on +invocation, by the set builtin command, or implicitly +by the shell. +.It $ +Expands to the process ID of the invoked shell. +A subshell retains the same value of $ as its parent. +.It ! +Expands to the process ID of the most recent background +command executed from the current shell. +For a pipeline, the process ID is that of the last command in the pipeline. +.It 0 (Zero.) +Expands to the name of the shell or shell script. +.El +.Ss Word Expansions +This clause describes the various expansions that are performed on words. +Not all expansions are performed on every word, as explained later. +.Pp +Tilde expansions, parameter expansions, command substitutions, arithmetic +expansions, and quote removals that occur within a single word expand to a +single field. +It is only field splitting or pathname expansion that can +create multiple fields from a single word. +The single exception to this +rule is the expansion of the special parameter @ within double-quotes, as +was described above. +.Pp +The order of word expansion is: +.Bl -enum +.It +Tilde Expansion, Parameter Expansion, Command Substitution, +Arithmetic Expansion (these all occur at the same time). +.It +Field Splitting is performed on fields +generated by step (1) unless the +.Ev IFS +variable is null. +.It +Pathname Expansion (unless set +.Fl f +is in effect). +.It +Quote Removal. +.El +.Pp +The $ character is used to introduce parameter expansion, command +substitution, or arithmetic evaluation. +.Ss Tilde Expansion (substituting a user's home directory) +A word beginning with an unquoted tilde character (~) is +subjected to tilde expansion. +All the characters up to +a slash (/) or the end of the word are treated as a username +and are replaced with the user's home directory. +If the username is missing (as in +.Pa ~/foobar ) , +the tilde is replaced with the value of the +.Va HOME +variable (the current user's home directory). +.Ss Parameter Expansion +The format for parameter expansion is as follows: +.Pp +.Dl ${expression} +.Pp +where expression consists of all characters until the matching +.Dq } . +Any +.Dq } +escaped by a backslash or within a quoted string, and characters in +embedded arithmetic expansions, command substitutions, and variable +expansions, are not examined in determining the matching +.Dq } . +.Pp +The simplest form for parameter expansion is: +.Pp +.Dl ${parameter} +.Pp +The value, if any, of parameter is substituted. +.Pp +The parameter name or symbol can be enclosed in braces, which are +optional except for positional parameters with more than one digit or +when parameter is followed by a character that could be interpreted as +part of the name. +If a parameter expansion occurs inside double-quotes: +.Bl -enum +.It +Pathname expansion is not performed on the results of the expansion. +.It +Field splitting is not performed on the results of the +expansion, with the exception of @. +.El +.Pp +In addition, a parameter expansion can be modified by using one of the +following formats. +.Bl -tag -width aaparameterwordaaaaa +.It ${parameter:-word} +Use Default Values. +If parameter is unset or null, the expansion of word +is substituted; otherwise, the value of parameter is substituted. +.It ${parameter:=word} +Assign Default Values. +If parameter is unset or null, the expansion of +word is assigned to parameter. +In all cases, the final value of parameter is substituted. +Only variables, not positional parameters or special +parameters, can be assigned in this way. +.It ${parameter:?[word]} +Indicate Error if Null or Unset. +If parameter is unset or null, the +expansion of word (or a message indicating it is unset if word is omitted) +is written to standard error and the shell exits with a nonzero exit status. +Otherwise, the value of parameter is substituted. +An interactive shell need not exit. +.It ${parameter:+word} +Use Alternative Value. +If parameter is unset or null, null is +substituted; otherwise, the expansion of word is substituted. +.El +.Pp +In the parameter expansions shown previously, use of the colon in the +format results in a test for a parameter that is unset or null; omission +of the colon results in a test for a parameter that is only unset. +.Bl -tag -width aaparameterwordaaaaa +.It ${#parameter} +String Length. +The length in characters of the value of parameter. +.El +.Pp +The following four varieties of parameter expansion provide for substring +processing. +In each case, pattern matching notation (see +.Sx Shell Patterns ) , +rather than regular expression notation, is used to evaluate the patterns. +If parameter is * or @, the result of the expansion is unspecified. +Enclosing the full parameter expansion string in double-quotes does not +cause the following four varieties of pattern characters to be quoted, +whereas quoting characters within the braces has this effect. +.Bl -tag -width aaparameterwordaaaaa +.It ${parameter%word} +Remove Smallest Suffix Pattern. +The word is expanded to produce a pattern. +The parameter expansion then results in parameter, with the +smallest portion of the suffix matched by the pattern deleted. +.It ${parameter%%word} +Remove Largest Suffix Pattern. +The word is expanded to produce a pattern. +The parameter expansion then results in parameter, with the largest +portion of the suffix matched by the pattern deleted. +.It ${parameter#word} +Remove Smallest Prefix Pattern. +The word is expanded to produce a pattern. +The parameter expansion then results in parameter, with the +smallest portion of the prefix matched by the pattern deleted. +.It ${parameter##word} +Remove Largest Prefix Pattern. +The word is expanded to produce a pattern. +The parameter expansion then results in parameter, with the largest +portion of the prefix matched by the pattern deleted. +.El +.Ss Command Substitution +Command substitution allows the output of a command to be substituted in +place of the command name itself. +Command substitution occurs when the command is enclosed as follows: +.Pp +.Dl $(command) +.Pp +or +.Po +.Dq backquoted +version +.Pc : +.Pp +.Dl `command` +.Pp +The shell expands the command substitution by executing command in a +subshell environment and replacing the command substitution with the +standard output of the command, removing sequences of one or more +.Ao newline Ac Ns s +at the end of the substitution. +(Embedded +.Ao newline Ac Ns s +before +the end of the output are not removed; however, during field splitting, +they may be translated into +.Ao space Ac Ns s , +depending on the value of +.Ev IFS +and quoting that is in effect.) +.Ss Arithmetic Expansion +Arithmetic expansion provides a mechanism for evaluating an arithmetic +expression and substituting its value. +The format for arithmetic expansion is as follows: +.Pp +.Dl $((expression)) +.Pp +The expression is treated as if it were in double-quotes, except +that a double-quote inside the expression is not treated specially. +The shell expands all tokens in the expression for parameter expansion, +command substitution, and quote removal. +.Pp +Next, the shell treats this as an arithmetic expression and +substitutes the value of the expression. +.Ss White Space Splitting (Field Splitting) +After parameter expansion, command substitution, and +arithmetic expansion the shell scans the results of +expansions and substitutions that did not occur in double-quotes for +field splitting and multiple fields can result. +.Pp +The shell treats each character of the +.Ev IFS +as a delimiter and uses the delimiters to split the results of parameter +expansion and command substitution into fields. +.Ss Pathname Expansion (File Name Generation) +Unless the +.Fl f +flag is set, file name generation is performed after word splitting is +complete. +Each word is viewed as a series of patterns, separated by slashes. +The process of expansion replaces the word with the names of all +existing files whose names can be formed by replacing each pattern with a +string that matches the specified pattern. +There are two restrictions on +this: first, a pattern cannot match a string containing a slash, and +second, a pattern cannot match a string starting with a period unless the +first character of the pattern is a period. +The next section describes the +patterns used for both Pathname Expansion and the +.Ic case +command. +.Ss Shell Patterns +A pattern consists of normal characters, which match themselves, +and meta-characters. +The meta-characters are +.Dq \&! , +.Dq * , +.Dq \&? , +and +.Dq \&[ . +These characters lose their special meanings if they are quoted. +When command or variable substitution is performed +and the dollar sign or back quotes are not double quoted, +the value of the variable or the output of +the command is scanned for these characters and they are turned into +meta-characters. +.Pp +An asterisk +.Pq Dq * +matches any string of characters. +A question mark matches any single character. +A left bracket +.Pq Dq \&[ +introduces a character class. +The end of the character class is indicated by a +.Pq Dq \&] ; +if the +.Dq \&] +is missing then the +.Dq \&[ +matches a +.Dq \&[ +rather than introducing a character class. +A character class matches any of the characters between the square brackets. +A range of characters may be specified using a minus sign. +The character class may be complemented +by making an exclamation point the first character of the character class. +.Pp +To include a +.Dq \&] +in a character class, make it the first character listed (after the +.Dq \&! , +if any). +To include a minus sign, make it the first or last character listed. +.Ss Builtins +This section lists the builtin commands which are builtin because they +need to perform some operation that can't be performed by a separate +process. +In addition to these, there are several other commands that may +be builtin for efficiency (e.g. +.Xr printf 1 , +.Xr echo 1 , +.Xr test 1 , +etc). +.Bl -tag -width 5n +.It : +.It true +A null command that returns a 0 (true) exit value. +.It \&. file +The commands in the specified file are read and executed by the shell. +.It alias Op Ar name Ns Op Ar "=string ..." +If +.Ar name=string +is specified, the shell defines the alias +.Ar name +with value +.Ar string . +If just +.Ar name +is specified, the value of the alias +.Ar name +is printed. +With no arguments, the +.Ic alias +builtin prints the +names and values of all defined aliases (see +.Ic unalias ) . +.It bg [ Ar job ] ... +Continue the specified jobs (or the current job if no +jobs are given) in the background. +.It Xo command +.Op Fl p +.Op Fl v +.Op Fl V +.Ar command +.Op Ar arg ... +.Xc +Execute the specified command but ignore shell functions when searching +for it. +(This is useful when you +have a shell function with the same name as a builtin command.) +.Bl -tag -width 5n +.It Fl p +search for command using a +.Ev PATH +that guarantees to find all the standard utilities. +.It Fl V +Do not execute the command but +search for the command and print the resolution of the +command search. +This is the same as the type builtin. +.It Fl v +Do not execute the command but +search for the command and print the absolute pathname +of utilities, the name for builtins or the expansion of aliases. +.El +.It cd Ar - +.It Xo cd Op Fl LP +.Op Ar directory +.Xc +Switch to the specified directory (default +.Ev HOME ) . +If an entry for +.Ev CDPATH +appears in the environment of the +.Ic cd +command or the shell variable +.Ev CDPATH +is set and the directory name does not begin with a slash, then the +directories listed in +.Ev CDPATH +will be searched for the specified directory. +The format of +.Ev CDPATH +is the same as that of +.Ev PATH . +If a single dash is specified as the argument, it will be replaced by the +value of +.Ev OLDPWD . +The +.Ic cd +command will print out the name of the +directory that it actually switched to if this is different from the name +that the user gave. +These may be different either because the +.Ev CDPATH +mechanism was used or because the argument is a single dash. +The +.Fl P +option causes the physical directory structure to be used, that is, all +symbolic links are resolved to their respective values. The +.Fl L +option turns off the effect of any preceding +.Fl P +options. +.It Xo echo Op Fl n +.Ar args... +.Xc +Print the arguments on the standard output, separated by spaces. +Unless the +.Fl n +option is present, a newline is output following the arguments. +.Pp +If any of the following sequences of characters is encountered during +output, the sequence is not output. Instead, the specified action is +performed: +.Bl -tag -width indent +.It Li \eb +A backspace character is output. +.It Li \ec +Subsequent output is suppressed. This is normally used at the end of the +last argument to suppress the trailing newline that +.Ic echo +would otherwise output. +.It Li \ef +Output a form feed. +.It Li \en +Output a newline character. +.It Li \er +Output a carriage return. +.It Li \et +Output a (horizontal) tab character. +.It Li \ev +Output a vertical tab. +.It Li \e0 Ns Ar digits +Output the character whose value is given by zero to three octal digits. +If there are zero digits, a nul character is output. +.It Li \e\e +Output a backslash. +.El +.Pp +All other backslash sequences elicit undefined behaviour. +.It eval Ar string ... +Concatenate all the arguments with spaces. +Then re-parse and execute the command. +.It exec Op Ar command arg ... +Unless command is omitted, the shell process is replaced with the +specified program (which must be a real program, not a shell builtin or +function). +Any redirections on the +.Ic exec +command are marked as permanent, so that they are not undone when the +.Ic exec +command finishes. +.It exit Op Ar exitstatus +Terminate the shell process. +If +.Ar exitstatus +is given it is used as the exit status of the shell; otherwise the +exit status of the preceding command is used. +.It export Ar name ... +.It export Fl p +The specified names are exported so that they will appear in the +environment of subsequent commands. +The only way to un-export a variable is to unset it. +The shell allows the value of a variable to be set at the +same time it is exported by writing +.Pp +.Dl export name=value +.Pp +With no arguments the export command lists the names of all exported variables. +With the +.Fl p +option specified the output will be formatted suitably for non-interactive use. +.It Xo fc Op Fl e Ar editor +.Op Ar first Op Ar last +.Xc +.It Xo fc Fl l +.Op Fl nr +.Op Ar first Op Ar last +.Xc +.It Xo fc Fl s Op Ar old=new +.Op Ar first +.Xc +The +.Ic fc +builtin lists, or edits and re-executes, commands previously entered +to an interactive shell. +.Bl -tag -width 5n +.It Fl e No editor +Use the editor named by editor to edit the commands. +The editor string is a command name, subject to search via the +.Ev PATH +variable. +The value in the +.Ev FCEDIT +variable is used as a default when +.Fl e +is not specified. +If +.Ev FCEDIT +is null or unset, the value of the +.Ev EDITOR +variable is used. +If +.Ev EDITOR +is null or unset, +.Xr ed 1 +is used as the editor. +.It Fl l No (ell) +List the commands rather than invoking an editor on them. +The commands are written in the sequence indicated by +the first and last operands, as affected by +.Fl r , +with each command preceded by the command number. +.It Fl n +Suppress command numbers when listing with -l. +.It Fl r +Reverse the order of the commands listed (with +.Fl l ) +or edited (with neither +.Fl l +nor +.Fl s ) . +.It Fl s +Re-execute the command without invoking an editor. +.It first +.It last +Select the commands to list or edit. +The number of previous commands that +can be accessed are determined by the value of the +.Ev HISTSIZE +variable. +The value of first or last or both are one of the following: +.Bl -tag -width 5n +.It [+]number +A positive number representing a command number; command numbers can be +displayed with the +.Fl l +option. +.It Fl number +A negative decimal number representing the command that was executed +number of commands previously. +For example, \-1 is the immediately previous command. +.El +.It string +A string indicating the most recently entered command that begins with +that string. +If the old=new operand is not also specified with +.Fl s , +the string form of the first operand cannot contain an embedded equal sign. +.El +.Pp +The following environment variables affect the execution of fc: +.Bl -tag -width HISTSIZE +.It Ev FCEDIT +Name of the editor to use. +.It Ev HISTSIZE +The number of previous commands that are accessible. +.El +.It fg Op Ar job +Move the specified job or the current job to the foreground. +.It getopts Ar optstring var +The +.Tn POSIX +.Ic getopts +command, not to be confused with the +.Em Bell Labs +-derived +.Xr getopt 1 . +.Pp +The first argument should be a series of letters, each of which may be +optionally followed by a colon to indicate that the option requires an +argument. +The variable specified is set to the parsed option. +.Pp +The +.Ic getopts +command deprecates the older +.Xr getopt 1 +utility due to its handling of arguments containing whitespace. +.Pp +The +.Ic getopts +builtin may be used to obtain options and their arguments +from a list of parameters. +When invoked, +.Ic getopts +places the value of the next option from the option string in the list in +the shell variable specified by +.Va var +and its index in the shell variable +.Ev OPTIND . +When the shell is invoked, +.Ev OPTIND +is initialized to 1. +For each option that requires an argument, the +.Ic getopts +builtin will place it in the shell variable +.Ev OPTARG . +If an option is not allowed for in the +.Va optstring , +then +.Ev OPTARG +will be unset. +.Pp +.Va optstring +is a string of recognized option letters (see +.Xr getopt 3 ) . +If a letter is followed by a colon, the option is expected to have an +argument which may or may not be separated from it by white space. +If an option character is not found where expected, +.Ic getopts +will set the variable +.Va var +to a +.Dq \&? ; +.Ic getopts +will then unset +.Ev OPTARG +and write output to standard error. +By specifying a colon as the first character of +.Va optstring +all errors will be ignored. +.Pp +After the last option +.Ic getopts +will return a non-zero value and set +.Va var +to +.Dq \&? . +.Pp +The following code fragment shows how one might process the arguments +for a command that can take the options +.Op a +and +.Op b , +and the option +.Op c , +which requires an argument. +.Pp +.Bd -literal -offset indent +while getopts abc: f +do + case $f in + a | b) flag=$f;; + c) carg=$OPTARG;; + \\?) echo $USAGE; exit 1;; + esac +done +shift `expr $OPTIND - 1` +.Ed +.Pp +This code will accept any of the following as equivalent: +.Pp +.Bd -literal -offset indent +cmd \-acarg file file +cmd \-a \-c arg file file +cmd \-carg -a file file +cmd \-a \-carg \-\- file file +.Ed +.It hash Fl rv Ar command ... +The shell maintains a hash table which remembers the +locations of commands. +With no arguments whatsoever, +the +.Ic hash +command prints out the contents of this table. +Entries which have not been looked at since the last +.Ic cd +command are marked with an asterisk; it is possible for these entries +to be invalid. +.Pp +With arguments, the +.Ic hash +command removes the specified commands from the hash table (unless +they are functions) and then locates them. +With the +.Fl v +option, hash prints the locations of the commands as it finds them. +The +.Fl r +option causes the hash command to delete all the entries in the hash table +except for functions. +.It pwd Op Fl LP +builtin command remembers what the current directory +is rather than recomputing it each time. +This makes it faster. +However, if the current directory is renamed, the builtin version of +.Ic pwd +will continue to print the old name for the directory. +The +.Fl P +option causes the physical value of the current working directory to be shown, +that is, all symbolic links are resolved to their respective values. The +.Fl L +option turns off the effect of any preceding +.Fl P +options. +.It Xo read Op Fl p Ar prompt +.Op Fl r +.Ar variable +.Op Ar ... +.Xc +The prompt is printed if the +.Fl p +option is specified and the standard input is a terminal. +Then a line is read from the standard input. +The trailing newline is deleted from the +line and the line is split as described in the section on word splitting +above, and the pieces are assigned to the variables in order. +At least one variable must be specified. +If there are more pieces than variables, the remaining pieces +(along with the characters in +.Ev IFS +that separated them) are assigned to the last variable. +If there are more variables than pieces, +the remaining variables are assigned the null string. +The +.Ic read +builtin will indicate success unless EOF is encountered on input, in +which case failure is returned. +.Pp +By default, unless the +.Fl r +option is specified, the backslash +.Dq \e +acts as an escape character, causing the following character to be treated +literally. +If a backslash is followed by a newline, the backslash and the +newline will be deleted. +.It readonly Ar name ... +.It readonly Fl p +The specified names are marked as read only, so that they cannot be +subsequently modified or unset. +The shell allows the value of a variable +to be set at the same time it is marked read only by writing +.Pp +.Dl readonly name=value +.Pp +With no arguments the readonly command lists the names of all read only +variables. +With the +.Fl p +option specified the output will be formatted suitably for non-interactive use. +.Pp +.It Xo printf Ar format +.Op Ar arguments ... +.Xc +.Ic printf +formats and prints its arguments, after the first, under control +of the +.Ar format . +The +.Ar format +is a character string which contains three types of objects: plain characters, +which are simply copied to standard output, character escape sequences which +are converted and copied to the standard output, and format specifications, +each of which causes printing of the next successive +.Ar argument . +.Pp +The +.Ar arguments +after the first are treated as strings if the corresponding format is +either +.Cm b , +.Cm c +or +.Cm s ; +otherwise it is evaluated as a C constant, with the following extensions: +.Pp +.Bl -bullet -offset indent -compact +.It +A leading plus or minus sign is allowed. +.It +If the leading character is a single or double quote, the value is the +.Tn ASCII +code of the next character. +.El +.Pp +The format string is reused as often as necessary to satisfy the +.Ar arguments . +Any extra format specifications are evaluated with zero or the null +string. +.Pp +Character escape sequences are in backslash notation as defined in +.St -ansiC . +The characters and their meanings are as follows: +.Bl -tag -width Ds -offset indent +.It Cm \ea +Write a \*[Lt]bell\*[Gt] character. +.It Cm \eb +Write a \*[Lt]backspace\*[Gt] character. +.It Cm \ef +Write a \*[Lt]form-feed\*[Gt] character. +.It Cm \en +Write a \*[Lt]new-line\*[Gt] character. +.It Cm \er +Write a \*[Lt]carriage return\*[Gt] character. +.It Cm \et +Write a \*[Lt]tab\*[Gt] character. +.It Cm \ev +Write a \*[Lt]vertical tab\*[Gt] character. +.It Cm \e\e +Write a backslash character. +.It Cm \e Ns Ar num +Write an 8\-bit character whose +.Tn ASCII +value is the 1\-, 2\-, or 3\-digit +octal number +.Ar num . +.El +.Pp +Each format specification is introduced by the percent character +(``%''). +The remainder of the format specification includes, +in the following order: +.Bl -tag -width Ds +.It "Zero or more of the following flags:" +.Bl -tag -width Ds +.It Cm # +A `#' character +specifying that the value should be printed in an ``alternative form''. +For +.Cm b , +.Cm c , +.Cm d , +and +.Cm s +formats, this option has no effect. +For the +.Cm o +format the precision of the number is increased to force the first +character of the output string to a zero. +For the +.Cm x +.Pq Cm X +format, a non-zero result has the string +.Li 0x +.Pq Li 0X +prepended to it. +For +.Cm e , +.Cm E , +.Cm f , +.Cm g , +and +.Cm G +formats, the result will always contain a decimal point, even if no +digits follow the point (normally, a decimal point only appears in the +results of those formats if a digit follows the decimal point). +For +.Cm g +and +.Cm G +formats, trailing zeros are not removed from the result as they +would otherwise be. +.It Cm \&\- +A minus sign `\-' which specifies +.Em left adjustment +of the output in the indicated field; +.It Cm \&+ +A `+' character specifying that there should always be +a sign placed before the number when using signed formats. +.It Sq \&\ \& +A space specifying that a blank should be left before a positive number +for a signed format. +A `+' overrides a space if both are used; +.It Cm \&0 +A zero `0' character indicating that zero-padding should be used +rather than blank-padding. +A `\-' overrides a `0' if both are used; +.El +.It "Field Width:" +An optional digit string specifying a +.Em field width ; +if the output string has fewer characters than the field width it will +be blank-padded on the left (or right, if the left-adjustment indicator +has been given) to make up the field width (note that a leading zero +is a flag, but an embedded zero is part of a field width); +.It Precision : +An optional period, +.Sq Cm \&.\& , +followed by an optional digit string giving a +.Em precision +which specifies the number of digits to appear after the decimal point, +for +.Cm e +and +.Cm f +formats, or the maximum number of bytes to be printed +from a string +.Sm off +.Pf ( Cm b +.Sm on +and +.Cm s +formats); if the digit string is missing, the precision is treated +as zero; +.It Format : +A character which indicates the type of format to use (one of +.Cm diouxXfwEgGbcs ) . +.El +.Pp +A field width or precision may be +.Sq Cm \&* +instead of a digit string. +In this case an +.Ar argument +supplies the field width or precision. +.Pp +The format characters and their meanings are: +.Bl -tag -width Fl +.It Cm diouXx +The +.Ar argument +is printed as a signed decimal (d or i), unsigned octal, unsigned decimal, +or unsigned hexadecimal (X or x), respectively. +.It Cm f +The +.Ar argument +is printed in the style +.Sm off +.Pf [\-]ddd Cm \&. No ddd +.Sm on +where the number of d's +after the decimal point is equal to the precision specification for +the argument. +If the precision is missing, 6 digits are given; if the precision +is explicitly 0, no digits and no decimal point are printed. +.It Cm eE +The +.Ar argument +is printed in the style +.Sm off +.Pf [\-]d Cm \&. No ddd Cm e No \*(Pmdd +.Sm on +where there +is one digit before the decimal point and the number after is equal to +the precision specification for the argument; when the precision is +missing, 6 digits are produced. +An upper-case E is used for an `E' format. +.It Cm gG +The +.Ar argument +is printed in style +.Cm f +or in style +.Cm e +.Pq Cm E +whichever gives full precision in minimum space. +.It Cm b +Characters from the string +.Ar argument +are printed with backslash-escape sequences expanded. +.br +The following additional backslash-escape sequences are supported: +.Bl -tag -width Ds +.It Cm \ec +Causes +.Nm +to ignore any remaining characters in the string operand containing it, +any remaining string operands, and any additional characters in +the format operand. +.It Cm \e0 Ns Ar num +Write an 8\-bit character whose +.Tn ASCII +value is the 1\-, 2\-, or 3\-digit +octal number +.Ar num . +.El +.It Cm c +The first character of +.Ar argument +is printed. +.It Cm s +Characters from the string +.Ar argument +are printed until the end is reached or until the number of bytes +indicated by the precision specification is reached; if the +precision is omitted, all characters in the string are printed. +.It Cm \&% +Print a `%'; no argument is used. +.El +.Pp +In no case does a non-existent or small field width cause truncation of +a field; padding takes place only if the specified field width exceeds +the actual width. +.It Xo set +.Oo { +.Fl options | Cm +options | Cm -- } +.Oc Ar arg ... +.Xc +The +.Ic set +command performs three different functions. +.Pp +With no arguments, it lists the values of all shell variables. +.Pp +If options are given, it sets the specified option +flags, or clears them as described in the section called +.Sx Argument List Processing . +As a special case, if the option is -o or +o and no argument is +supplied, the shell prints the settings of all its options. If the +option is -o, the settings are printed in a human-readable format; if +the option is +o, the settings are printed in a format suitable for +reinput to the shell to affect the same option settings. +.Pp +The third use of the set command is to set the values of the shell's +positional parameters to the specified args. +To change the positional +parameters without changing any options, use +.Dq -- +as the first argument to set. +If no args are present, the set command +will clear all the positional parameters (equivalent to executing +.Dq shift $# . ) +.It shift Op Ar n +Shift the positional parameters n times. +A +.Ic shift +sets the value of +.Va $1 +to the value of +.Va $2 , +the value of +.Va $2 +to the value of +.Va $3 , +and so on, decreasing +the value of +.Va $# +by one. +If n is greater than the number of positional parameters, +.Ic shift +will issue an error message, and exit with return status 2. +.It test Ar expression +.It \&[ Ar expression Cm \&] +The +.Ic test +utility evaluates the expression and, if it evaluates +to true, returns a zero (true) exit status; otherwise +it returns 1 (false). +If there is no expression, test also +returns 1 (false). +.Pp +All operators and flags are separate arguments to the +.Ic test +utility. +.Pp +The following primaries are used to construct expression: +.Bl -tag -width Ar +.It Fl b Ar file +True if +.Ar file +exists and is a block special +file. +.It Fl c Ar file +True if +.Ar file +exists and is a character +special file. +.It Fl d Ar file +True if +.Ar file +exists and is a directory. +.It Fl e Ar file +True if +.Ar file +exists (regardless of type). +.It Fl f Ar file +True if +.Ar file +exists and is a regular file. +.It Fl g Ar file +True if +.Ar file +exists and its set group ID flag +is set. +.It Fl h Ar file +True if +.Ar file +exists and is a symbolic link. +.It Fl k Ar file +True if +.Ar file +exists and its sticky bit is set. +.It Fl n Ar string +True if the length of +.Ar string +is nonzero. +.It Fl p Ar file +True if +.Ar file +is a named pipe +.Po Tn FIFO Pc . +.It Fl r Ar file +True if +.Ar file +exists and is readable. +.It Fl s Ar file +True if +.Ar file +exists and has a size greater +than zero. +.It Fl t Ar file_descriptor +True if the file whose file descriptor number +is +.Ar file_descriptor +is open and is associated with a terminal. +.It Fl u Ar file +True if +.Ar file +exists and its set user ID flag +is set. +.It Fl w Ar file +True if +.Ar file +exists and is writable. +True +indicates only that the write flag is on. +The file is not writable on a read-only file +system even if this test indicates true. +.It Fl x Ar file +True if +.Ar file +exists and is executable. +True +indicates only that the execute flag is on. +If +.Ar file +is a directory, true indicates that +.Ar file +can be searched. +.It Fl z Ar string +True if the length of +.Ar string +is zero. +.It Fl L Ar file +True if +.Ar file +exists and is a symbolic link. +This operator is retained for compatibility with previous versions of +this program. +Do not rely on its existence; use +.Fl h +instead. +.It Fl O Ar file +True if +.Ar file +exists and its owner matches the effective user id of this process. +.It Fl G Ar file +True if +.Ar file +exists and its group matches the effective group id of this process. +.It Fl S Ar file +True if +.Ar file +exists and is a socket. +.It Ar file1 Fl nt Ar file2 +True if +.Ar file1 +and +.Ar file2 +exist and +.Ar file1 +is newer than +.Ar file2 . +.It Ar file1 Fl ot Ar file2 +True if +.Ar file1 +and +.Ar file2 +exist and +.Ar file1 +is older than +.Ar file2 . +.It Ar file1 Fl ef Ar file2 +True if +.Ar file1 +and +.Ar file2 +exist and refer to the same file. +.It Ar string +True if +.Ar string +is not the null +string. +.It Ar \&s\&1 Cm \&= Ar \&s\&2 +True if the strings +.Ar \&s\&1 +and +.Ar \&s\&2 +are identical. +.It Ar \&s\&1 Cm \&!= Ar \&s\&2 +True if the strings +.Ar \&s\&1 +and +.Ar \&s\&2 +are not identical. +.It Ar \&s\&1 Cm \&\*[Lt] Ar \&s\&2 +True if string +.Ar \&s\&1 +comes before +.Ar \&s\&2 +based on the ASCII value of their characters. +.It Ar \&s\&1 Cm \&\*[Gt] Ar \&s\&2 +True if string +.Ar \&s\&1 +comes after +.Ar \&s\&2 +based on the ASCII value of their characters. +.It Ar \&n\&1 Fl \&eq Ar \&n\&2 +True if the integers +.Ar \&n\&1 +and +.Ar \&n\&2 +are algebraically +equal. +.It Ar \&n\&1 Fl \&ne Ar \&n\&2 +True if the integers +.Ar \&n\&1 +and +.Ar \&n\&2 +are not +algebraically equal. +.It Ar \&n\&1 Fl \> Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically +greater than the integer +.Ar \&n\&2 . +.It Ar \&n\&1 Fl \&ge Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically +greater than or equal to the integer +.Ar \&n\&2 . +.It Ar \&n\&1 Fl \< Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically less +than the integer +.Ar \&n\&2 . +.It Ar \&n\&1 Fl \&le Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically less +than or equal to the integer +.Ar \&n\&2 . +.El +.Pp +These primaries can be combined with the following operators: +.Bl -tag -width Ar +.It Cm \&! Ar expression +True if +.Ar expression +is false. +.It Ar expression1 Fl a Ar expression2 +True if both +.Ar expression1 +and +.Ar expression2 +are true. +.It Ar expression1 Fl o Ar expression2 +True if either +.Ar expression1 +or +.Ar expression2 +are true. +.It Cm \&( Ns Ar expression Ns Cm \&) +True if expression is true. +.El +.Pp +The +.Fl a +operator has higher precedence than the +.Fl o +operator. +.It times +Print the accumulated user and system times for the shell and for processes +run from the shell. The return status is 0. +.It Xo trap +.Op Ar action Ar signal ... +.Xc +Cause the shell to parse and execute action when any of the specified +signals are received. +The signals are specified by signal number or as the name of the signal. +If +.Ar signal +is +.Li 0 +or +.Li EXIT , +the action is executed when the shell exits. +.Ar action +may be empty +.Li ( "''" ) , +which causes the specified signals to be ignored. +With +.Ar action +omitted or set to `-' the specified signals are set to their default action. +When the shell forks off a subshell, it resets trapped (but not ignored) +signals to the default action. +The +.Ic trap +command has no effect on signals that were +ignored on entry to the shell. +.Ic trap +without any arguments cause it to write a list of signals and their +associated action to the standard output in a format that is suitable +as an input to the shell that achieves the same trapping results. +.Pp +Examples: +.Pp +.Dl trap +.Pp +List trapped signals and their corresponding action +.Pp +.Dl trap '' INT QUIT tstp 30 +.Pp +Ignore signals INT QUIT TSTP USR1 +.Pp +.Dl trap date INT +.Pp +Print date upon receiving signal INT +.It type Op Ar name ... +Interpret each name as a command and print the resolution of the command +search. +Possible resolutions are: +shell keyword, alias, shell builtin, +command, tracked alias and not found. +For aliases the alias expansion is +printed; for commands and tracked aliases the complete pathname of the +command is printed. +.It ulimit Xo +.Op Fl H \*(Ba Fl S +.Op Fl a \*(Ba Fl tfdscmlpnv Op Ar value +.Xc +Inquire about or set the hard or soft limits on processes or set new +limits. +The choice between hard limit (which no process is allowed to +violate, and which may not be raised once it has been lowered) and soft +limit (which causes processes to be signaled but not necessarily killed, +and which may be raised) is made with these flags: +.Bl -tag -width Fl +.It Fl H +set or inquire about hard limits +.It Fl S +set or inquire about soft limits. +If neither +.Fl H +nor +.Fl S +is specified, the soft limit is displayed or both limits are set. +If both are specified, the last one wins. +.El +.Pp +The limit to be interrogated or set, then, is chosen by specifying +any one of these flags: +.Bl -tag -width Fl +.It Fl a +show all the current limits +.It Fl t +show or set the limit on CPU time (in seconds) +.It Fl f +show or set the limit on the largest file that can be created +(in 512-byte blocks) +.It Fl d +show or set the limit on the data segment size of a process (in kilobytes) +.It Fl s +show or set the limit on the stack size of a process (in kilobytes) +.It Fl c +show or set the limit on the largest core dump size that can be produced +(in 512-byte blocks) +.It Fl m +show or set the limit on the total physical memory that can be +in use by a process (in kilobytes) +.It Fl l +show or set the limit on how much memory a process can lock with +.Xr mlock 2 +(in kilobytes) +.It Fl p +show or set the limit on the number of processes this user can +have at one time +.It Fl n +show or set the limit on the number files a process can have open at once +.It Fl v +show or set the limit on the total virtual memory that can be +in use by a process (in kilobytes) +.It Fl r +show or set the limit on the real-time scheduling priority of a process +.El +.Pp +If none of these is specified, it is the limit on file size that is shown +or set. +If value is specified, the limit is set to that number; otherwise +the current limit is displayed. +.Pp +Limits of an arbitrary process can be displayed or set using the +.Xr sysctl 8 +utility. +.Pp +.It umask Op Ar mask +Set the value of umask (see +.Xr umask 2 ) +to the specified octal value. +If the argument is omitted, the umask value is printed. +.It unalias Xo +.Op Fl a +.Op Ar name +.Xc +If +.Ar name +is specified, the shell removes that alias. +If +.Fl a +is specified, all aliases are removed. +.It unset Xo +.Op Fl fv +.Ar name ... +.Xc +The specified variables and functions are unset and unexported. +If +.Fl f +or +.Fl v +is specified, the corresponding function or variable is unset, respectively. +If a given name corresponds to both a variable and a function, and no +options are given, only the variable is unset. +.It wait Op Ar job +Wait for the specified job to complete and return the exit status of the +last process in the job. +If the argument is omitted, wait for all jobs to +complete and return an exit status of zero. +.El +.Ss Command Line Editing +When +.Nm +is being used interactively from a terminal, the current command +and the command history (see +.Ic fc +in +.Sx Builtins ) +can be edited using vi-mode command-line editing. +This mode uses commands, described below, +similar to a subset of those described in the vi man page. +The command +.Ql set -o vi +enables vi-mode editing and places sh into vi insert mode. +With vi-mode +enabled, sh can be switched between insert mode and command mode. +It is similar to vi: typing +.Aq ESC +enters vi command mode. +Hitting +.Aq return +while in command mode will pass the line to the shell. +.Sh EXIT STATUS +Errors that are detected by the shell, such as a syntax error, will cause the +shell to exit with a non-zero exit status. +If the shell is not an +interactive shell, the execution of the shell file will be aborted. +Otherwise +the shell will return the exit status of the last command executed, or +if the exit builtin is used with a numeric argument, it will return the +argument. +.Sh ENVIRONMENT +.Bl -tag -width MAILCHECK +.It Ev HOME +Set automatically by +.Xr login 1 +from the user's login directory in the password file +.Pq Xr passwd 4 . +This environment variable also functions as the default argument for the +cd builtin. +.It Ev PATH +The default search path for executables. +See the above section +.Sx Path Search . +.It Ev CDPATH +The search path used with the cd builtin. +.It Ev MAIL +The name of a mail file, that will be checked for the arrival of new mail. +Overridden by +.Ev MAILPATH . +.It Ev MAILCHECK +The frequency in seconds that the shell checks for the arrival of mail +in the files specified by the +.Ev MAILPATH +or the +.Ev MAIL +file. +If set to 0, the check will occur at each prompt. +.It Ev MAILPATH +A colon +.Dq \&: +separated list of file names, for the shell to check for incoming mail. +This environment setting overrides the +.Ev MAIL +setting. +There is a maximum of 10 mailboxes that can be monitored at once. +.It Ev PS1 +The primary prompt string, which defaults to +.Dq $\ , +unless you are the superuser, in which case it defaults to +.Dq #\ . +.It Ev PS2 +The secondary prompt string, which defaults to +.Dq \*[Gt]\ . +.It Ev PS4 +Output before each line when execution trace (set -x) is enabled, +defaults to +.Dq +\ . +.It Ev RPS1 +The primary right prompt string. +.It Ev RPS2 +The secondary right prompt string. +.It Ev IFS +Input Field Separators. +This is normally set to +.Aq space , +.Aq tab , +and +.Aq newline . +See the +.Sx White Space Splitting +section for more details. +.It Ev TERM +The default terminal setting for the shell. +This is inherited by +children of the shell, and is used in the history editing modes. +.It Ev HISTSIZE +The number of lines in the history buffer for the shell. +.It Ev PWD +The logical value of the current working directory. This is set by the +.Ic cd +command. +.It Ev OLDPWD +The previous logical value of the current working directory. This is set by +the +.Ic cd +command. +.It Ev PPID +The process ID of the parent process of the shell. +.El +.Sh FILES +.Bl -item -width HOMEprofilexxxx +.It +.Pa $HOME/.profile +.It +.Pa /etc/profile +.El +.Sh SEE ALSO +.Xr csh 1 , +.Xr echo 1 , +.Xr getopt 1 , +.Xr ksh 1 , +.Xr login 1 , +.Xr printf 1 , +.Xr test 1 , +.Xr getopt 3 , +.Xr passwd 5 , +.\" .Xr profile 4 , +.Xr environ 7 , +.Xr sysctl 8 +.Sh HISTORY +.Nm +is a POSIX-compliant implementation of /bin/sh that aims to be as small as +possible. +.Nm +is a direct descendant of the NetBSD version of ash (the Almquist SHell), +ported to Linux in early 1997. +It was renamed to +.Nm +in 2002. +.Sh BUGS +Setuid shell scripts should be avoided at all costs, as they are a +significant security risk. +.Pp +PS1, PS2, and PS4 should be subject to parameter expansion before +being displayed. diff --git a/bin/dash/src/error.c b/bin/dash/src/error.c new file mode 100644 index 00000000..728ff885 --- /dev/null +++ b/bin/dash/src/error.c @@ -0,0 +1,238 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Errors and exceptions. + */ + +#include <signal.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> + +#include "jobs.h" +#include "shell.h" +#include "main.h" +#include "options.h" +#include "output.h" +#include "error.h" +#include "show.h" +#include "eval.h" +#include "parser.h" +#include "system.h" + + +/* + * Code to handle exceptions in C. + */ + +struct jmploc *handler; +int exception; +int suppressint; +volatile sig_atomic_t intpending; +int errlinno; + + +static void exverror(int, const char *, va_list) + __attribute__((__noreturn__)); + +/* + * Called to raise an exception. Since C doesn't include exceptions, we + * just do a longjmp to the exception handler. The type of exception is + * stored in the global variable "exception". + */ + +void +exraise(int e) +{ +#ifdef DEBUG + if (handler == NULL) + abort(); +#endif + + if (vforked) + _exit(exitstatus); + + INTOFF; + + exception = e; + longjmp(handler->loc, 1); +} + + +/* + * Called from trap.c when a SIGINT is received. (If the user specifies + * that SIGINT is to be trapped or ignored using the trap builtin, then + * this routine is not called.) Suppressint is nonzero when interrupts + * are held using the INTOFF macro. (The test for iflag is just + * defensive programming.) + */ + +void +onint(void) { + + intpending = 0; + sigclearmask(); + if (!(rootshell && iflag)) { + signal(SIGINT, SIG_DFL); + raise(SIGINT); + } + exitstatus = SIGINT + 128; + exraise(EXINT); + /* NOTREACHED */ +} + +static void +exvwarning2(const char *msg, va_list ap) +{ + struct output *errs; + const char *name; + const char *fmt; + + errs = out2; + name = arg0 ? arg0 : "sh"; + if (!commandname) + fmt = "%s: %d: "; + else + fmt = "%s: %d: %s: "; + outfmt(errs, fmt, name, errlinno, commandname); + doformat(errs, msg, ap); +#if FLUSHERR + outc('\n', errs); +#else + outcslow('\n', errs); +#endif +} + +#define exvwarning(a, b, c) exvwarning2(b, c) + +/* + * Exverror is called to raise the error exception. If the second argument + * is not NULL then error prints an error message using printf style + * formatting. It then raises the error exception. + */ +static void +exverror(int cond, const char *msg, va_list ap) +{ +#ifdef DEBUG + if (msg) { + va_list aq; + TRACE(("exverror(%d, \"", cond)); + va_copy(aq, ap); + TRACEV((msg, aq)); + va_end(aq); + TRACE(("\") pid=%d\n", getpid())); + } else + TRACE(("exverror(%d, NULL) pid=%d\n", cond, getpid())); + if (msg) +#endif + exvwarning(-1, msg, ap); + + flushall(); + exraise(cond); + /* NOTREACHED */ +} + + +void +sh_error(const char *msg, ...) +{ + va_list ap; + + exitstatus = 2; + + va_start(ap, msg); + exverror(EXERROR, msg, ap); + /* NOTREACHED */ + va_end(ap); +} + + +void +exerror(int cond, const char *msg, ...) +{ + va_list ap; + + va_start(ap, msg); + exverror(cond, msg, ap); + /* NOTREACHED */ + va_end(ap); +} + +/* + * error/warning routines for external builtins + */ + +void +sh_warnx(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + exvwarning(-1, fmt, ap); + va_end(ap); +} + + +/* + * Return a string describing an error. The returned string may be a + * pointer to a static buffer that will be overwritten on the next call. + * Action describes the operation that got the error. + */ + +const char * +errmsg(int e, int action) +{ + if (e != ENOENT && e != ENOTDIR) + return strerror(e); + + if (action & E_OPEN) + return "No such file"; + else if (action & E_CREAT) + return "Directory nonexistent"; + else + return "not found"; +} + + +#ifdef REALLY_SMALL +void +__inton() { + if (--suppressint == 0 && intpending) { + onint(); + } +} +#endif diff --git a/bin/dash/src/error.h b/bin/dash/src/error.h new file mode 100644 index 00000000..94e30a27 --- /dev/null +++ b/bin/dash/src/error.h @@ -0,0 +1,129 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)error.h 8.2 (Berkeley) 5/4/95 + */ + +#include <setjmp.h> +#include <signal.h> + +/* + * Types of operations (passed to the errmsg routine). + */ + +#define E_OPEN 01 /* opening a file */ +#define E_CREAT 02 /* creating a file */ +#define E_EXEC 04 /* executing a program */ + + +/* + * We enclose jmp_buf in a structure so that we can declare pointers to + * jump locations. The global variable handler contains the location to + * jump to when an exception occurs, and the global variable exception + * contains a code identifying the exeception. To implement nested + * exception handlers, the user should save the value of handler on entry + * to an inner scope, set handler to point to a jmploc structure for the + * inner scope, and restore handler on exit from the scope. + */ + +struct jmploc { + jmp_buf loc; +}; + +extern struct jmploc *handler; +extern int exception; + +/* exceptions */ +#define EXINT 0 /* SIGINT received */ +#define EXERROR 1 /* a generic error */ +#define EXEND 3 /* exit the shell */ +#define EXEXIT 4 /* exit the shell via exitcmd */ + + +/* + * These macros allow the user to suspend the handling of interrupt signals + * over a period of time. This is similar to SIGHOLD to or sigblock, but + * much more efficient and portable. (But hacking the kernel is so much + * more fun than worrying about efficiency and portability. :-)) + */ + +extern int suppressint; +extern volatile sig_atomic_t intpending; + +#define barrier() ({ __asm__ __volatile__ ("": : :"memory"); }) +#define INTOFF \ + ({ \ + suppressint++; \ + barrier(); \ + 0; \ + }) +#ifdef REALLY_SMALL +void __inton(void); +#define INTON __inton() +#else +#define INTON \ + ({ \ + barrier(); \ + if (--suppressint == 0 && intpending) onint(); \ + 0; \ + }) +#endif +#define FORCEINTON \ + ({ \ + barrier(); \ + suppressint = 0; \ + if (intpending) onint(); \ + 0; \ + }) +#define SAVEINT(v) ((v) = suppressint) +#define RESTOREINT(v) \ + ({ \ + barrier(); \ + if ((suppressint = (v)) == 0 && intpending) onint(); \ + 0; \ + }) +#define CLEAR_PENDING_INT intpending = 0 +#define int_pending() intpending + +void exraise(int) __attribute__((__noreturn__)); +#ifdef USE_NORETURN +void onint(void) __attribute__((__noreturn__)); +#else +void onint(void); +#endif +extern int errlinno; +void sh_error(const char *, ...) __attribute__((__noreturn__)); +void exerror(int, const char *, ...) __attribute__((__noreturn__)); +const char *errmsg(int, int); + +void sh_warnx(const char *, ...); diff --git a/bin/dash/src/eval.c b/bin/dash/src/eval.c new file mode 100644 index 00000000..1b5d61dc --- /dev/null +++ b/bin/dash/src/eval.c @@ -0,0 +1,1147 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <stdlib.h> +#include <signal.h> +#include <unistd.h> +#include <sys/types.h> + +/* + * Evaluate a command. + */ + +#include "init.h" +#include "main.h" +#include "shell.h" +#include "nodes.h" +#include "syntax.h" +#include "expand.h" +#include "parser.h" +#include "jobs.h" +#include "eval.h" +#include "builtins.h" +#include "options.h" +#include "exec.h" +#include "redir.h" +#include "input.h" +#include "output.h" +#include "trap.h" +#include "var.h" +#include "memalloc.h" +#include "error.h" +#include "show.h" +#include "mystring.h" +#ifndef SMALL +#include "myhistedit.h" +#endif + + +int evalskip; /* set if we are skipping commands */ +STATIC int skipcount; /* number of levels to skip */ +MKINIT int loopnest; /* current loop nesting level */ +static int funcline; /* starting line number of current function, or 0 if not in a function */ + + +char *commandname; +int exitstatus; /* exit status of last command */ +int back_exitstatus; /* exit status of backquoted command */ +int savestatus = -1; /* exit status of last command outside traps */ + + +#if !defined(__alpha__) || (defined(__GNUC__) && __GNUC__ >= 3) +STATIC +#endif +void evaltreenr(union node *, int) __attribute__ ((__noreturn__)); +STATIC int evalloop(union node *, int); +STATIC int evalfor(union node *, int); +STATIC int evalcase(union node *, int); +STATIC int evalsubshell(union node *, int); +STATIC void expredir(union node *); +STATIC int evalpipe(union node *, int); +#ifdef notyet +STATIC int evalcommand(union node *, int, struct backcmd *); +#else +STATIC int evalcommand(union node *, int); +#endif +STATIC int evalbltin(const struct builtincmd *, int, char **, int); +STATIC int evalfun(struct funcnode *, int, char **, int); +STATIC void prehash(union node *); +STATIC int eprintlist(struct output *, struct strlist *, int); +STATIC int bltincmd(int, char **); + + +STATIC const struct builtincmd bltin = { + .name = nullstr, + .builtin = bltincmd, + .flags = BUILTIN_REGULAR, +}; + + +/* + * Called to reset things after an exception. + */ + +#ifdef mkinit +INCLUDE "eval.h" + +EXITRESET { + if (savestatus >= 0) { + if (exception == EXEXIT || evalskip == SKIPFUNCDEF) + exitstatus = savestatus; + savestatus = -1; + } + evalskip = 0; + loopnest = 0; +} +#endif + + + +/* + * The eval commmand. + */ + +static int evalcmd(int argc, char **argv, int flags) +{ + char *p; + char *concat; + char **ap; + + if (argc > 1) { + p = argv[1]; + if (argc > 2) { + STARTSTACKSTR(concat); + ap = argv + 2; + for (;;) { + concat = stputs(p, concat); + if ((p = *ap++) == NULL) + break; + STPUTC(' ', concat); + } + STPUTC('\0', concat); + p = grabstackstr(concat); + } + return evalstring(p, flags & EV_TESTED); + } + return 0; +} + + +/* + * Execute a command or commands contained in a string. + */ + +int +evalstring(char *s, int flags) +{ + union node *n; + struct stackmark smark; + int status; + + s = sstrdup(s); + setinputstring(s); + setstackmark(&smark); + + status = 0; + for (; (n = parsecmd(0)) != NEOF; popstackmark(&smark)) { + int i; + + i = evaltree(n, flags & ~(parser_eof() ? 0 : EV_EXIT)); + if (n) + status = i; + + if (evalskip) + break; + } + popstackmark(&smark); + popfile(); + stunalloc(s); + + return status; +} + + + +/* + * Evaluate a parse tree. The value is left in the global variable + * exitstatus. + */ + +int +evaltree(union node *n, int flags) +{ + int checkexit = 0; + int (*evalfn)(union node *, int); + struct stackmark smark; + unsigned isor; + int status = 0; + + setstackmark(&smark); + + if (n == NULL) { + TRACE(("evaltree(NULL) called\n")); + goto out; + } + + dotrap(); + +#ifndef SMALL + displayhist = 1; /* show history substitutions done with fc */ +#endif + TRACE(("pid %d, evaltree(%p: %d, %d) called\n", + getpid(), n, n->type, flags)); + switch (n->type) { + default: +#ifdef DEBUG + out1fmt("Node type = %d\n", n->type); +#ifndef USE_GLIBC_STDIO + flushout(out1); +#endif + break; +#endif + case NNOT: + status = !evaltree(n->nnot.com, EV_TESTED); + goto setstatus; + case NREDIR: + errlinno = lineno = n->nredir.linno; + if (funcline) + lineno -= funcline - 1; + expredir(n->nredir.redirect); + pushredir(n->nredir.redirect); + status = redirectsafe(n->nredir.redirect, REDIR_PUSH) ?: + evaltree(n->nredir.n, flags & EV_TESTED); + if (n->nredir.redirect) + popredir(0); + goto setstatus; + case NCMD: +#ifdef notyet + if (eflag && !(flags & EV_TESTED)) + checkexit = ~0; + status = evalcommand(n, flags, (struct backcmd *)NULL); + goto setstatus; +#else + evalfn = evalcommand; +checkexit: + if (eflag && !(flags & EV_TESTED)) + checkexit = ~0; + goto calleval; +#endif + case NFOR: + evalfn = evalfor; + goto calleval; + case NWHILE: + case NUNTIL: + evalfn = evalloop; + goto calleval; + case NSUBSHELL: + case NBACKGND: + evalfn = evalsubshell; + goto checkexit; + case NPIPE: + evalfn = evalpipe; + goto checkexit; + case NCASE: + evalfn = evalcase; + goto calleval; + case NAND: + case NOR: + case NSEMI: +#if NAND + 1 != NOR +#error NAND + 1 != NOR +#endif +#if NOR + 1 != NSEMI +#error NOR + 1 != NSEMI +#endif + isor = n->type - NAND; + status = evaltree(n->nbinary.ch1, + (flags | ((isor >> 1) - 1)) & EV_TESTED); + if ((!status) == isor || evalskip) + break; + n = n->nbinary.ch2; +evaln: + evalfn = evaltree; +calleval: + status = evalfn(n, flags); + goto setstatus; + case NIF: + status = evaltree(n->nif.test, EV_TESTED); + if (evalskip) + break; + if (!status) { + n = n->nif.ifpart; + goto evaln; + } else if (n->nif.elsepart) { + n = n->nif.elsepart; + goto evaln; + } + status = 0; + goto setstatus; + case NDEFUN: + defun(n); +setstatus: + exitstatus = status; + break; + } +out: + dotrap(); + + if (checkexit & status) + goto exexit; + + if (flags & EV_EXIT) { +exexit: + exraise(EXEND); + } + + popstackmark(&smark); + + return exitstatus; +} + + +#if !defined(__alpha__) || (defined(__GNUC__) && __GNUC__ >= 3) +STATIC +#endif +void evaltreenr(union node *n, int flags) +#ifdef HAVE_ATTRIBUTE_ALIAS + __attribute__ ((alias("evaltree"))); +#else +{ + evaltree(n, flags); + abort(); +} +#endif + + +static int skiploop(void) +{ + int skip = evalskip; + + switch (skip) { + case 0: + break; + + case SKIPBREAK: + case SKIPCONT: + if (likely(--skipcount <= 0)) { + evalskip = 0; + break; + } + + skip = SKIPBREAK; + break; + } + + return skip; +} + + +STATIC int +evalloop(union node *n, int flags) +{ + int skip; + int status; + + loopnest++; + status = 0; + flags &= EV_TESTED; + do { + int i; + + i = evaltree(n->nbinary.ch1, EV_TESTED); + skip = skiploop(); + if (skip == SKIPFUNC) + status = i; + if (skip) + continue; + if (n->type != NWHILE) + i = !i; + if (i != 0) + break; + status = evaltree(n->nbinary.ch2, flags); + skip = skiploop(); + } while (!(skip & ~SKIPCONT)); + loopnest--; + + return status; +} + + + +STATIC int +evalfor(union node *n, int flags) +{ + struct arglist arglist; + union node *argp; + struct strlist *sp; + int status; + + errlinno = lineno = n->nfor.linno; + if (funcline) + lineno -= funcline - 1; + + arglist.lastp = &arglist.list; + for (argp = n->nfor.args ; argp ; argp = argp->narg.next) { + expandarg(argp, &arglist, EXP_FULL | EXP_TILDE); + } + *arglist.lastp = NULL; + + status = 0; + loopnest++; + flags &= EV_TESTED; + for (sp = arglist.list ; sp ; sp = sp->next) { + setvar(n->nfor.var, sp->text, 0); + status = evaltree(n->nfor.body, flags); + if (skiploop() & ~SKIPCONT) + break; + } + loopnest--; + + return status; +} + + + +STATIC int +evalcase(union node *n, int flags) +{ + union node *cp; + union node *patp; + struct arglist arglist; + int status = 0; + + errlinno = lineno = n->ncase.linno; + if (funcline) + lineno -= funcline - 1; + + arglist.lastp = &arglist.list; + expandarg(n->ncase.expr, &arglist, EXP_TILDE); + for (cp = n->ncase.cases ; cp && evalskip == 0 ; cp = cp->nclist.next) { + for (patp = cp->nclist.pattern ; patp ; patp = patp->narg.next) { + if (casematch(patp, arglist.list->text)) { + /* Ensure body is non-empty as otherwise + * EV_EXIT may prevent us from setting the + * exit status. + */ + if (evalskip == 0 && cp->nclist.body) { + status = evaltree(cp->nclist.body, + flags); + } + goto out; + } + } + } +out: + return status; +} + + + +/* + * Kick off a subshell to evaluate a tree. + */ + +STATIC int +evalsubshell(union node *n, int flags) +{ + struct job *jp; + int backgnd = (n->type == NBACKGND); + int status; + + errlinno = lineno = n->nredir.linno; + if (funcline) + lineno -= funcline - 1; + + expredir(n->nredir.redirect); + INTOFF; + if (!backgnd && flags & EV_EXIT && !have_traps()) { + forkreset(); + goto nofork; + } + jp = makejob(n, 1); + if (forkshell(jp, n, backgnd) == 0) { + flags |= EV_EXIT; + if (backgnd) + flags &=~ EV_TESTED; +nofork: + INTON; + redirect(n->nredir.redirect, 0); + evaltreenr(n->nredir.n, flags); + /* never returns */ + } + status = 0; + if (! backgnd) + status = waitforjob(jp); + INTON; + return status; +} + + + +/* + * Compute the names of the files in a redirection list. + */ + +STATIC void +expredir(union node *n) +{ + union node *redir; + + for (redir = n ; redir ; redir = redir->nfile.next) { + struct arglist fn; + fn.lastp = &fn.list; + switch (redir->type) { + case NFROMTO: + case NFROM: + case NTO: + case NCLOBBER: + case NAPPEND: + expandarg(redir->nfile.fname, &fn, EXP_TILDE | EXP_REDIR); + redir->nfile.expfname = fn.list->text; + break; + case NFROMFD: + case NTOFD: + if (redir->ndup.vname) { + expandarg(redir->ndup.vname, &fn, EXP_TILDE | EXP_REDIR); + fixredir(redir, fn.list->text, 1); + } + break; + } + } +} + + + +/* + * Evaluate a pipeline. All the processes in the pipeline are children + * of the process creating the pipeline. (This differs from some versions + * of the shell, which make the last process in a pipeline the parent + * of all the rest.) + */ + +STATIC int +evalpipe(union node *n, int flags) +{ + struct job *jp; + struct nodelist *lp; + int pipelen; + int prevfd; + int pip[2]; + int status = 0; + + TRACE(("evalpipe(0x%lx) called\n", (long)n)); + pipelen = 0; + for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) + pipelen++; + flags |= EV_EXIT; + INTOFF; + jp = makejob(n, pipelen); + prevfd = -1; + for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) { + prehash(lp->n); + pip[1] = -1; + if (lp->next) { + if (pipe(pip) < 0) { + close(prevfd); + sh_error("Pipe call failed"); + } + } + if (forkshell(jp, lp->n, n->npipe.backgnd) == 0) { + INTON; + if (pip[1] >= 0) { + close(pip[0]); + } + if (prevfd > 0) { + dup2(prevfd, 0); + close(prevfd); + } + if (pip[1] > 1) { + dup2(pip[1], 1); + close(pip[1]); + } + evaltreenr(lp->n, flags); + /* never returns */ + } + if (prevfd >= 0) + close(prevfd); + prevfd = pip[0]; + close(pip[1]); + } + if (n->npipe.backgnd == 0) { + status = waitforjob(jp); + TRACE(("evalpipe: job done exit status %d\n", status)); + } + INTON; + + return status; +} + + + +/* + * Execute a command inside back quotes. If it's a builtin command, we + * want to save its output in a block obtained from malloc. Otherwise + * we fork off a subprocess and get the output of the command via a pipe. + * Should be called with interrupts off. + */ + +void +evalbackcmd(union node *n, struct backcmd *result) +{ + int pip[2]; + struct job *jp; + + result->fd = -1; + result->buf = NULL; + result->nleft = 0; + result->jp = NULL; + if (n == NULL) { + goto out; + } + + if (pipe(pip) < 0) + sh_error("Pipe call failed"); + jp = makejob(n, 1); + if (forkshell(jp, n, FORK_NOJOB) == 0) { + FORCEINTON; + close(pip[0]); + if (pip[1] != 1) { + dup2(pip[1], 1); + close(pip[1]); + } + ifsfree(); + evaltreenr(n, EV_EXIT); + /* NOTREACHED */ + } + close(pip[1]); + result->fd = pip[0]; + result->jp = jp; + +out: + TRACE(("evalbackcmd done: fd=%d buf=0x%x nleft=%d jp=0x%x\n", + result->fd, result->buf, result->nleft, result->jp)); +} + +static struct strlist *fill_arglist(struct arglist *arglist, + union node **argpp) +{ + struct strlist **lastp = arglist->lastp; + union node *argp; + + while ((argp = *argpp)) { + expandarg(argp, arglist, EXP_FULL | EXP_TILDE); + *argpp = argp->narg.next; + if (*lastp) + break; + } + + return *lastp; +} + +static int parse_command_args(struct arglist *arglist, union node **argpp, + const char **path) +{ + struct strlist *sp = arglist->list; + char *cp, c; + + for (;;) { + sp = unlikely(sp->next) ? sp->next : + fill_arglist(arglist, argpp); + if (!sp) + return 0; + cp = sp->text; + if (*cp++ != '-') + break; + if (!(c = *cp++)) + break; + if (c == '-' && !*cp) { + if (likely(!sp->next) && !fill_arglist(arglist, argpp)) + return 0; + sp = sp->next; + break; + } + do { + switch (c) { + case 'p': + *path = defpath; + break; + default: + /* run 'typecmd' for other options */ + return 0; + } + } while ((c = *cp++)); + } + + arglist->list = sp; + return DO_NOFUNC; +} + +/* + * Execute a simple command. + */ + +STATIC int +#ifdef notyet +evalcommand(union node *cmd, int flags, struct backcmd *backcmd) +#else +evalcommand(union node *cmd, int flags) +#endif +{ + struct localvar_list *localvar_stop; + struct parsefile *file_stop; + struct redirtab *redir_stop; + union node *argp; + struct arglist arglist; + struct arglist varlist; + char **argv; + int argc; + struct strlist *osp; + struct strlist *sp; +#ifdef notyet + int pip[2]; +#endif + struct cmdentry cmdentry; + struct job *jp; + char *lastarg; + const char *path; + int spclbltin; + int cmd_flag; + int execcmd; + int status; + char **nargv; + int vflags; + int vlocal; + + errlinno = lineno = cmd->ncmd.linno; + if (funcline) + lineno -= funcline - 1; + + /* First expand the arguments. */ + TRACE(("evalcommand(0x%lx, %d) called\n", (long)cmd, flags)); + file_stop = parsefile; + back_exitstatus = 0; + + cmdentry.cmdtype = CMDBUILTIN; + cmdentry.u.cmd = &bltin; + varlist.lastp = &varlist.list; + *varlist.lastp = NULL; + arglist.lastp = &arglist.list; + *arglist.lastp = NULL; + + cmd_flag = 0; + execcmd = 0; + spclbltin = -1; + vflags = 0; + vlocal = 0; + path = NULL; + + argc = 0; + argp = cmd->ncmd.args; + if ((osp = fill_arglist(&arglist, &argp))) { + int pseudovarflag = 0; + + for (;;) { + find_command(arglist.list->text, &cmdentry, + cmd_flag | DO_REGBLTIN, pathval()); + + vlocal++; + + /* implement bltin and command here */ + if (cmdentry.cmdtype != CMDBUILTIN) + break; + + pseudovarflag = cmdentry.u.cmd->flags & BUILTIN_ASSIGN; + if (likely(spclbltin < 0)) { + spclbltin = + cmdentry.u.cmd->flags & + BUILTIN_SPECIAL + ; + vlocal = spclbltin ^ BUILTIN_SPECIAL; + } + execcmd = cmdentry.u.cmd == EXECCMD; + if (likely(cmdentry.u.cmd != COMMANDCMD)) + break; + + cmd_flag = parse_command_args(&arglist, &argp, &path); + if (!cmd_flag) + break; + } + + for (; argp; argp = argp->narg.next) + expandarg(argp, &arglist, + pseudovarflag && + isassignment(argp->narg.text) ? + EXP_VARTILDE : EXP_FULL | EXP_TILDE); + + for (sp = arglist.list; sp; sp = sp->next) + argc++; + + if (execcmd && argc > 1) + vflags = VEXPORT; + } + + localvar_stop = pushlocalvars(vlocal); + + /* Reserve one extra spot at the front for shellexec. */ + nargv = stalloc(sizeof (char *) * (argc + 2)); + argv = ++nargv; + for (sp = arglist.list ; sp ; sp = sp->next) { + TRACE(("evalcommand arg: %s\n", sp->text)); + *nargv++ = sp->text; + } + *nargv = NULL; + + lastarg = NULL; + if (iflag && funcline == 0 && argc > 0) + lastarg = nargv[-1]; + + preverrout.fd = 2; + expredir(cmd->ncmd.redirect); + redir_stop = pushredir(cmd->ncmd.redirect); + status = redirectsafe(cmd->ncmd.redirect, REDIR_PUSH|REDIR_SAVEFD2); + + if (unlikely(status)) { +bail: + exitstatus = status; + + /* We have a redirection error. */ + if (spclbltin > 0) + exraise(EXERROR); + + goto out; + } + + for (argp = cmd->ncmd.assign; argp; argp = argp->narg.next) { + struct strlist **spp; + + spp = varlist.lastp; + expandarg(argp, &varlist, EXP_VARTILDE); + + if (vlocal) + mklocal((*spp)->text, VEXPORT); + else + setvareq((*spp)->text, vflags); + } + + /* Print the command if xflag is set. */ + if (xflag) { + struct output *out; + int sep; + + out = &preverrout; + outstr(expandstr(ps4val()), out); + sep = 0; + sep = eprintlist(out, varlist.list, sep); + eprintlist(out, osp, sep); + outcslow('\n', out); +#ifdef FLUSHERR + flushout(out); +#endif + } + + /* Now locate the command. */ + if (cmdentry.cmdtype != CMDBUILTIN || + !(cmdentry.u.cmd->flags & BUILTIN_REGULAR)) { + path = unlikely(path) ? path : pathval(); + find_command(argv[0], &cmdentry, cmd_flag | DO_ERR, path); + } + + jp = NULL; + + /* Execute the command. */ + switch (cmdentry.cmdtype) { + case CMDUNKNOWN: + status = 127; +#ifdef FLUSHERR + flushout(&errout); +#endif + goto bail; + + default: + /* Fork off a child process if necessary. */ + if (!(flags & EV_EXIT) || have_traps()) { + INTOFF; + jp = vforkexec(cmd, argv, path, cmdentry.u.index); + break; + } + shellexec(argv, path, cmdentry.u.index); + /* NOTREACHED */ + + case CMDBUILTIN: + if (evalbltin(cmdentry.u.cmd, argc, argv, flags) && + !(exception == EXERROR && spclbltin <= 0)) { +raise: + longjmp(handler->loc, 1); + } + break; + + case CMDFUNCTION: + if (evalfun(cmdentry.u.func, argc, argv, flags)) + goto raise; + break; + } + + status = waitforjob(jp); + FORCEINTON; + +out: + if (cmd->ncmd.redirect) + popredir(execcmd); + unwindredir(redir_stop); + unwindfiles(file_stop); + unwindlocalvars(localvar_stop); + if (lastarg) + /* dsl: I think this is intended to be used to support + * '_' in 'vi' command mode during line editing... + * However I implemented that within libedit itself. + */ + setvar("_", lastarg, 0); + + return status; +} + +STATIC int +evalbltin(const struct builtincmd *cmd, int argc, char **argv, int flags) +{ + char *volatile savecmdname; + struct jmploc *volatile savehandler; + struct jmploc jmploc; + int status; + int i; + + savecmdname = commandname; + savehandler = handler; + if ((i = setjmp(jmploc.loc))) + goto cmddone; + handler = &jmploc; + commandname = argv[0]; + argptr = argv + 1; + optptr = NULL; /* initialize nextopt */ + if (cmd == EVALCMD) + status = evalcmd(argc, argv, flags); + else + status = (*cmd->builtin)(argc, argv); + flushall(); + if (outerr(out1)) + sh_warnx("%s: I/O error", commandname); + status |= outerr(out1); + exitstatus = status; +cmddone: + freestdout(); + commandname = savecmdname; + handler = savehandler; + + return i; +} + +STATIC int +evalfun(struct funcnode *func, int argc, char **argv, int flags) +{ + volatile struct shparam saveparam; + struct jmploc *volatile savehandler; + struct jmploc jmploc; + int e; + int savefuncline; + int saveloopnest; + + saveparam = shellparam; + savefuncline = funcline; + saveloopnest = loopnest; + savehandler = handler; + if ((e = setjmp(jmploc.loc))) { + goto funcdone; + } + INTOFF; + handler = &jmploc; + shellparam.malloc = 0; + func->count++; + funcline = func->n.ndefun.linno; + loopnest = 0; + INTON; + shellparam.nparam = argc - 1; + shellparam.p = argv + 1; + shellparam.optind = 1; + shellparam.optoff = -1; + evaltree(func->n.ndefun.body, flags & EV_TESTED); +funcdone: + INTOFF; + loopnest = saveloopnest; + funcline = savefuncline; + freefunc(func); + freeparam(&shellparam); + shellparam = saveparam; + handler = savehandler; + INTON; + evalskip &= ~(SKIPFUNC | SKIPFUNCDEF); + return e; +} + + +/* + * Search for a command. This is called before we fork so that the + * location of the command will be available in the parent as well as + * the child. The check for "goodname" is an overly conservative + * check that the name will not be subject to expansion. + */ + +STATIC void +prehash(union node *n) +{ + struct cmdentry entry; + + if (n->type == NCMD && n->ncmd.args) + if (goodname(n->ncmd.args->narg.text)) + find_command(n->ncmd.args->narg.text, &entry, 0, + pathval()); +} + + + +/* + * Builtin commands. Builtin commands whose functions are closely + * tied to evaluation are implemented here. + */ + +/* + * No command given. + */ + +STATIC int +bltincmd(int argc, char **argv) +{ + /* + * Preserve exitstatus of a previous possible redirection + * as POSIX mandates + */ + return back_exitstatus; +} + + +/* + * Handle break and continue commands. Break, continue, and return are + * all handled by setting the evalskip flag. The evaluation routines + * above all check this flag, and if it is set they start skipping + * commands rather than executing them. The variable skipcount is + * the number of loops to break/continue, or the number of function + * levels to return. (The latter is always 1.) It should probably + * be an error to break out of more loops than exist, but it isn't + * in the standard shell so we don't make it one here. + */ + +int +breakcmd(int argc, char **argv) +{ + int n = argc > 1 ? number(argv[1]) : 1; + + if (n <= 0) + badnum(argv[1]); + if (n > loopnest) + n = loopnest; + if (n > 0) { + evalskip = (**argv == 'c')? SKIPCONT : SKIPBREAK; + skipcount = n; + } + return 0; +} + + +/* + * The return command. + */ + +int +returncmd(int argc, char **argv) +{ + int skip; + int status; + + /* + * If called outside a function, do what ksh does; + * skip the rest of the file. + */ + if (argv[1]) { + skip = SKIPFUNC; + status = number(argv[1]); + } else { + skip = SKIPFUNCDEF; + status = exitstatus; + } + evalskip = skip; + + return status; +} + + +int +falsecmd(int argc, char **argv) +{ + return 1; +} + + +int +truecmd(int argc, char **argv) +{ + return 0; +} + + +int +execcmd(int argc, char **argv) +{ + if (argc > 1) { + iflag = 0; /* exit on error */ + mflag = 0; + optschanged(); + shellexec(argv + 1, pathval(), 0); + } + return 0; +} + + +STATIC int +eprintlist(struct output *out, struct strlist *sp, int sep) +{ + while (sp) { + const char *p; + + p = " %s"; + p += (1 - sep); + sep |= 1; + outfmt(out, p, sp->text); + sp = sp->next; + } + + return sep; +} diff --git a/bin/dash/src/eval.h b/bin/dash/src/eval.h new file mode 100644 index 00000000..63e7d865 --- /dev/null +++ b/bin/dash/src/eval.h @@ -0,0 +1,65 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)eval.h 8.2 (Berkeley) 5/4/95 + */ + +extern char *commandname; /* currently executing command */ +extern int exitstatus; /* exit status of last command */ +extern int back_exitstatus; /* exit status of backquoted command */ +extern int savestatus; /* exit status of last command outside traps */ + + +struct backcmd { /* result of evalbackcmd */ + int fd; /* file descriptor to read from */ + char *buf; /* buffer */ + int nleft; /* number of chars in buffer */ + struct job *jp; /* job structure for command */ +}; + +/* flags in argument to evaltree */ +#define EV_EXIT 01 /* exit after evaluating tree */ +#define EV_TESTED 02 /* exit status is checked; ignore -e flag */ + +int evalstring(char *, int); +union node; /* BLETCH for ansi C */ +int evaltree(union node *, int); +void evalbackcmd(union node *, struct backcmd *); + +extern int evalskip; + +/* reasons for skipping commands (see comment on breakcmd routine) */ +#define SKIPBREAK (1 << 0) +#define SKIPCONT (1 << 1) +#define SKIPFUNC (1 << 2) +#define SKIPFUNCDEF (1 << 3) diff --git a/bin/dash/src/exec.c b/bin/dash/src/exec.c new file mode 100644 index 00000000..87354d49 --- /dev/null +++ b/bin/dash/src/exec.c @@ -0,0 +1,908 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <fcntl.h> +#include <stdlib.h> +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif + +/* + * When commands are first encountered, they are entered in a hash table. + * This ensures that a full path search will not have to be done for them + * on each invocation. + * + * We should investigate converting to a linear search, even though that + * would make the command name "hash" a misnomer. + */ + +#include "shell.h" +#include "main.h" +#include "nodes.h" +#include "parser.h" +#include "redir.h" +#include "eval.h" +#include "exec.h" +#include "builtins.h" +#include "var.h" +#include "options.h" +#include "output.h" +#include "syntax.h" +#include "memalloc.h" +#include "error.h" +#include "init.h" +#include "mystring.h" +#include "show.h" +#include "jobs.h" +#include "alias.h" +#include "system.h" + + +#define CMDTABLESIZE 31 /* should be prime */ +#define ARB 1 /* actual size determined at run time */ + + + +struct tblentry { + struct tblentry *next; /* next entry in hash chain */ + union param param; /* definition of builtin function */ + short cmdtype; /* index identifying command */ + char rehash; /* if set, cd done since entry created */ + char cmdname[ARB]; /* name of command */ +}; + + +STATIC struct tblentry *cmdtable[CMDTABLESIZE]; +STATIC int builtinloc = -1; /* index in path of %builtin, or -1 */ + + +STATIC void tryexec(char *, char **, char **); +STATIC void printentry(struct tblentry *); +STATIC void clearcmdentry(void); +STATIC struct tblentry *cmdlookup(const char *, int); +STATIC void delete_cmd_entry(void); +STATIC void addcmdentry(char *, struct cmdentry *); +STATIC int describe_command(struct output *, char *, const char *, int); + + +/* + * Exec a program. Never returns. If you change this routine, you may + * have to change the find_command routine as well. + */ + +void +shellexec(char **argv, const char *path, int idx) +{ + char *cmdname; + int e; + char **envp; + int exerrno; + + envp = environment(); + if (strchr(argv[0], '/') != NULL) { + tryexec(argv[0], argv, envp); + e = errno; + } else { + e = ENOENT; + while (padvance(&path, argv[0]) >= 0) { + cmdname = stackblock(); + if (--idx < 0 && pathopt == NULL) { + tryexec(cmdname, argv, envp); + if (errno != ENOENT && errno != ENOTDIR) + e = errno; + } + } + } + + /* Map to POSIX errors */ + switch (e) { + default: + exerrno = 126; + break; + case ELOOP: + case ENAMETOOLONG: + case ENOENT: + case ENOTDIR: + exerrno = 127; + break; + } + exitstatus = exerrno; + TRACE(("shellexec failed for %s, errno %d, suppressint %d\n", + argv[0], e, suppressint )); + exerror(EXEND, "%s: %s", argv[0], errmsg(e, E_EXEC)); + /* NOTREACHED */ +} + + +STATIC void +tryexec(char *cmd, char **argv, char **envp) +{ + char *const path_bshell = _PATH_BSHELL; + +repeat: +#ifdef SYSV + do { + execve(cmd, argv, envp); + } while (errno == EINTR); +#else + execve(cmd, argv, envp); +#endif + if (cmd != path_bshell && errno == ENOEXEC) { + *argv-- = cmd; + *argv = cmd = path_bshell; + goto repeat; + } +} + +static const char *legal_pathopt(const char *opt, const char *term, int magic) +{ + switch (magic) { + case 0: + opt = NULL; + break; + + case 1: + opt = prefix(opt, "builtin") ?: prefix(opt, "func"); + break; + + default: + opt += strcspn(opt, term); + break; + } + + if (opt && *opt == '%') + opt++; + + return opt; +} + +/* + * Do a path search. The variable path (passed by reference) should be + * set to the start of the path before the first call; padvance will update + * this value as it proceeds. Successive calls to padvance will return + * the possible path expansions in sequence. If an option (indicated by + * a percent sign) appears in the path entry then the global variable + * pathopt will be set to point to it; otherwise pathopt will be set to + * NULL. + * + * If magic is 0 then pathopt recognition will be disabled. If magic is + * 1 we shall recognise %builtin/%func. Otherwise we shall accept any + * pathopt. + */ + +const char *pathopt; + +int padvance_magic(const char **path, const char *name, int magic) +{ + const char *term = "%:"; + const char *lpathopt; + const char *p; + char *q; + const char *start; + size_t qlen; + size_t len; + + if (*path == NULL) + return -1; + + lpathopt = NULL; + start = *path; + + if (*start == '%' && (p = legal_pathopt(start + 1, term, magic))) { + lpathopt = start + 1; + start = p; + term = ":"; + } + + len = strcspn(start, term); + p = start + len; + + if (*p == '%') { + size_t extra = strchrnul(p, ':') - p; + + if (legal_pathopt(p + 1, term, magic)) + lpathopt = p + 1; + else + len += extra; + + p += extra; + } + + pathopt = lpathopt; + *path = *p == ':' ? p + 1 : NULL; + + /* "2" is for '/' and '\0' */ + qlen = len + strlen(name) + 2; + q = growstackto(qlen); + + if (likely(len)) { + q = mempcpy(q, start, len); + *q++ = '/'; + } + strcpy(q, name); + + return qlen; +} + + + +/*** Command hashing code ***/ + + +int +hashcmd(int argc, char **argv) +{ + struct tblentry **pp; + struct tblentry *cmdp; + int c; + struct cmdentry entry; + char *name; + + while ((c = nextopt("r")) != '\0') { + clearcmdentry(); + return 0; + } + if (*argptr == NULL) { + for (pp = cmdtable ; pp < &cmdtable[CMDTABLESIZE] ; pp++) { + for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { + if (cmdp->cmdtype == CMDNORMAL) + printentry(cmdp); + } + } + return 0; + } + c = 0; + while ((name = *argptr) != NULL) { + if ((cmdp = cmdlookup(name, 0)) && + (cmdp->cmdtype == CMDNORMAL || + (cmdp->cmdtype == CMDBUILTIN && + !(cmdp->param.cmd->flags & BUILTIN_REGULAR) && + builtinloc > 0))) + delete_cmd_entry(); + find_command(name, &entry, DO_ERR, pathval()); + if (entry.cmdtype == CMDUNKNOWN) + c = 1; + argptr++; + } + return c; +} + + +STATIC void +printentry(struct tblentry *cmdp) +{ + int idx; + const char *path; + char *name; + + idx = cmdp->param.index; + path = pathval(); + do { + padvance(&path, cmdp->cmdname); + } while (--idx >= 0); + name = stackblock(); + out1str(name); + out1fmt(snlfmt, cmdp->rehash ? "*" : nullstr); +} + + + +/* + * Resolve a command name. If you change this routine, you may have to + * change the shellexec routine as well. + */ + +void +find_command(char *name, struct cmdentry *entry, int act, const char *path) +{ + struct tblentry *cmdp; + int idx; + int prev; + char *fullname; + struct stat64 statb; + int e; + int updatetbl; + struct builtincmd *bcmd; + int len; + + /* If name contains a slash, don't use PATH or hash table */ + if (strchr(name, '/') != NULL) { + entry->u.index = -1; + if (act & DO_ABS) { + while (stat64(name, &statb) < 0) { +#ifdef SYSV + if (errno == EINTR) + continue; +#endif + entry->cmdtype = CMDUNKNOWN; + return; + } + } + entry->cmdtype = CMDNORMAL; + return; + } + + updatetbl = (path == pathval()); + if (!updatetbl) + act |= DO_ALTPATH; + + /* If name is in the table, check answer will be ok */ + if ((cmdp = cmdlookup(name, 0)) != NULL) { + int bit; + + switch (cmdp->cmdtype) { + default: +#if DEBUG + abort(); +#endif + case CMDNORMAL: + bit = DO_ALTPATH | DO_REGBLTIN; + break; + case CMDFUNCTION: + bit = DO_NOFUNC; + break; + case CMDBUILTIN: + bit = cmdp->param.cmd->flags & BUILTIN_REGULAR ? + 0 : DO_REGBLTIN; + break; + } + if (act & bit) { + if (act & bit & DO_REGBLTIN) + goto fail; + + updatetbl = 0; + cmdp = NULL; + } else if (cmdp->rehash == 0) + /* if not invalidated by cd, we're done */ + goto success; + } + + /* If %builtin not in path, check for builtin next */ + bcmd = find_builtin(name); + if (bcmd && ((bcmd->flags & BUILTIN_REGULAR) | (act & DO_ALTPATH) | + (builtinloc <= 0))) + goto builtin_success; + + if (act & DO_REGBLTIN) + goto fail; + + /* We have to search path. */ + prev = -1; /* where to start */ + if (cmdp && cmdp->rehash) { /* doing a rehash */ + if (cmdp->cmdtype == CMDBUILTIN) + prev = builtinloc; + else + prev = cmdp->param.index; + } + + e = ENOENT; + idx = -1; +loop: + while ((len = padvance(&path, name)) >= 0) { + const char *lpathopt = pathopt; + + fullname = stackblock(); + idx++; + if (lpathopt) { + if (*lpathopt == 'b') { + if (bcmd) + goto builtin_success; + continue; + } else if (!(act & DO_NOFUNC)) { + /* handled below */ + } else { + /* ignore unimplemented options */ + continue; + } + } + /* if rehash, don't redo absolute path names */ + if (fullname[0] == '/' && idx <= prev) { + if (idx < prev) + continue; + TRACE(("searchexec \"%s\": no change\n", name)); + goto success; + } + while (stat64(fullname, &statb) < 0) { +#ifdef SYSV + if (errno == EINTR) + continue; +#endif + if (errno != ENOENT && errno != ENOTDIR) + e = errno; + goto loop; + } + e = EACCES; /* if we fail, this will be the error */ + if (!S_ISREG(statb.st_mode)) + continue; + if (lpathopt) { /* this is a %func directory */ + stalloc(len); + readcmdfile(fullname); + if ((cmdp = cmdlookup(name, 0)) == NULL || + cmdp->cmdtype != CMDFUNCTION) + sh_error("%s not defined in %s", name, + fullname); + stunalloc(fullname); + goto success; + } +#ifdef notdef + /* XXX this code stops root executing stuff, and is buggy + if you need a group from the group list. */ + if (statb.st_uid == geteuid()) { + if ((statb.st_mode & 0100) == 0) + goto loop; + } else if (statb.st_gid == getegid()) { + if ((statb.st_mode & 010) == 0) + goto loop; + } else { + if ((statb.st_mode & 01) == 0) + goto loop; + } +#endif + TRACE(("searchexec \"%s\" returns \"%s\"\n", name, fullname)); + if (!updatetbl) { + entry->cmdtype = CMDNORMAL; + entry->u.index = idx; + return; + } + INTOFF; + cmdp = cmdlookup(name, 1); + cmdp->cmdtype = CMDNORMAL; + cmdp->param.index = idx; + INTON; + goto success; + } + + /* We failed. If there was an entry for this command, delete it */ + if (cmdp && updatetbl) + delete_cmd_entry(); + if (act & DO_ERR) + sh_warnx("%s: %s", name, errmsg(e, E_EXEC)); +fail: + entry->cmdtype = CMDUNKNOWN; + return; + +builtin_success: + if (!updatetbl) { + entry->cmdtype = CMDBUILTIN; + entry->u.cmd = bcmd; + return; + } + INTOFF; + cmdp = cmdlookup(name, 1); + cmdp->cmdtype = CMDBUILTIN; + cmdp->param.cmd = bcmd; + INTON; +success: + cmdp->rehash = 0; + entry->cmdtype = cmdp->cmdtype; + entry->u = cmdp->param; +} + + + +/* + * Search the table of builtin commands. + */ + +struct builtincmd * +find_builtin(const char *name) +{ + struct builtincmd *bp; + + bp = bsearch( + &name, builtincmd, NUMBUILTINS, sizeof(struct builtincmd), + pstrcmp + ); + return bp; +} + + + +/* + * Called when a cd is done. Marks all commands so the next time they + * are executed they will be rehashed. + */ + +void +hashcd(void) +{ + struct tblentry **pp; + struct tblentry *cmdp; + + for (pp = cmdtable ; pp < &cmdtable[CMDTABLESIZE] ; pp++) { + for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { + if (cmdp->cmdtype == CMDNORMAL || ( + cmdp->cmdtype == CMDBUILTIN && + !(cmdp->param.cmd->flags & BUILTIN_REGULAR) && + builtinloc > 0 + )) + cmdp->rehash = 1; + } + } +} + + + +/* + * Fix command hash table when PATH changed. + * Called before PATH is changed. The argument is the new value of PATH; + * pathval() still returns the old value at this point. + * Called with interrupts off. + */ + +void +changepath(const char *newval) +{ + const char *new; + int idx; + int bltin; + + new = newval; + idx = 0; + bltin = -1; + for (;;) { + if (*new == '%' && prefix(new + 1, "builtin")) { + bltin = idx; + break; + } + new = strchr(new, ':'); + if (!new) + break; + idx++; + new++; + } + builtinloc = bltin; + clearcmdentry(); +} + + +/* + * Clear out command entries. The argument specifies the first entry in + * PATH which has changed. + */ + +STATIC void +clearcmdentry(void) +{ + struct tblentry **tblp; + struct tblentry **pp; + struct tblentry *cmdp; + + INTOFF; + for (tblp = cmdtable ; tblp < &cmdtable[CMDTABLESIZE] ; tblp++) { + pp = tblp; + while ((cmdp = *pp) != NULL) { + if (cmdp->cmdtype == CMDNORMAL || + (cmdp->cmdtype == CMDBUILTIN && + !(cmdp->param.cmd->flags & BUILTIN_REGULAR) && + builtinloc > 0)) { + *pp = cmdp->next; + ckfree(cmdp); + } else { + pp = &cmdp->next; + } + } + } + INTON; +} + + + +/* + * Locate a command in the command hash table. If "add" is nonzero, + * add the command to the table if it is not already present. The + * variable "lastcmdentry" is set to point to the address of the link + * pointing to the entry, so that delete_cmd_entry can delete the + * entry. + * + * Interrupts must be off if called with add != 0. + */ + +struct tblentry **lastcmdentry; + + +STATIC struct tblentry * +cmdlookup(const char *name, int add) +{ + unsigned int hashval; + const char *p; + struct tblentry *cmdp; + struct tblentry **pp; + + p = name; + hashval = (unsigned char)*p << 4; + while (*p) + hashval += (unsigned char)*p++; + hashval &= 0x7FFF; + pp = &cmdtable[hashval % CMDTABLESIZE]; + for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { + if (equal(cmdp->cmdname, name)) + break; + pp = &cmdp->next; + } + if (add && cmdp == NULL) { + cmdp = *pp = ckmalloc(sizeof (struct tblentry) - ARB + + strlen(name) + 1); + cmdp->next = NULL; + cmdp->cmdtype = CMDUNKNOWN; + strcpy(cmdp->cmdname, name); + } + lastcmdentry = pp; + return cmdp; +} + +/* + * Delete the command entry returned on the last lookup. + */ + +STATIC void +delete_cmd_entry(void) +{ + struct tblentry *cmdp; + + INTOFF; + cmdp = *lastcmdentry; + *lastcmdentry = cmdp->next; + if (cmdp->cmdtype == CMDFUNCTION) + freefunc(cmdp->param.func); + ckfree(cmdp); + INTON; +} + + + +#ifdef notdef +void +getcmdentry(char *name, struct cmdentry *entry) +{ + struct tblentry *cmdp = cmdlookup(name, 0); + + if (cmdp) { + entry->u = cmdp->param; + entry->cmdtype = cmdp->cmdtype; + } else { + entry->cmdtype = CMDUNKNOWN; + entry->u.index = 0; + } +} +#endif + + +/* + * Add a new command entry, replacing any existing command entry for + * the same name - except special builtins. + */ + +STATIC void +addcmdentry(char *name, struct cmdentry *entry) +{ + struct tblentry *cmdp; + + cmdp = cmdlookup(name, 1); + if (cmdp->cmdtype == CMDFUNCTION) { + freefunc(cmdp->param.func); + } + cmdp->cmdtype = entry->cmdtype; + cmdp->param = entry->u; + cmdp->rehash = 0; +} + + +/* + * Define a shell function. + */ + +void +defun(union node *func) +{ + struct cmdentry entry; + + INTOFF; + entry.cmdtype = CMDFUNCTION; + entry.u.func = copyfunc(func); + addcmdentry(func->ndefun.text, &entry); + INTON; +} + + +/* + * Delete a function if it exists. + */ + +void +unsetfunc(const char *name) +{ + struct tblentry *cmdp; + + if ((cmdp = cmdlookup(name, 0)) != NULL && + cmdp->cmdtype == CMDFUNCTION) + delete_cmd_entry(); +} + +/* + * Locate and print what a word is... + */ + +int +typecmd(int argc, char **argv) +{ + int i; + int err = 0; + + for (i = 1; i < argc; i++) { + err |= describe_command(out1, argv[i], NULL, 1); + } + return err; +} + +STATIC int +describe_command(out, command, path, verbose) + struct output *out; + char *command; + const char *path; + int verbose; +{ + struct cmdentry entry; + struct tblentry *cmdp; + const struct alias *ap; + + if (verbose) { + outstr(command, out); + } + + /* First look at the keywords */ + if (findkwd(command)) { + outstr(verbose ? " is a shell keyword" : command, out); + goto out; + } + + /* Then look at the aliases */ + if ((ap = lookupalias(command, 0)) != NULL) { + if (verbose) { + outfmt(out, " is an alias for %s", ap->val); + } else { + outstr("alias ", out); + printalias(ap); + return 0; + } + goto out; + } + + /* Then if the standard search path is used, check if it is + * a tracked alias. + */ + if (path == NULL) { + path = pathval(); + cmdp = cmdlookup(command, 0); + } else { + cmdp = NULL; + } + + if (cmdp != NULL) { + entry.cmdtype = cmdp->cmdtype; + entry.u = cmdp->param; + } else { + /* Finally use brute force */ + find_command(command, &entry, DO_ABS, path); + } + + switch (entry.cmdtype) { + case CMDNORMAL: { + int j = entry.u.index; + char *p; + if (j == -1) { + p = command; + } else { + do { + padvance(&path, command); + } while (--j >= 0); + p = stackblock(); + } + if (verbose) { + outfmt( + out, " is%s %s", + cmdp ? " a tracked alias for" : nullstr, p + ); + } else { + outstr(p, out); + } + break; + } + + case CMDFUNCTION: + if (verbose) { + outstr(" is a shell function", out); + } else { + outstr(command, out); + } + break; + + case CMDBUILTIN: + if (verbose) { + outfmt( + out, " is a %sshell builtin", + entry.u.cmd->flags & BUILTIN_SPECIAL ? + "special " : nullstr + ); + } else { + outstr(command, out); + } + break; + + default: + if (verbose) { + outstr(": not found\n", out); + } + return 127; + } + +out: + outc('\n', out); + return 0; +} + +int +commandcmd(argc, argv) + int argc; + char **argv; +{ + char *cmd; + int c; + enum { + VERIFY_BRIEF = 1, + VERIFY_VERBOSE = 2, + } verify = 0; + const char *path = NULL; + + while ((c = nextopt("pvV")) != '\0') + if (c == 'V') + verify |= VERIFY_VERBOSE; + else if (c == 'v') + verify |= VERIFY_BRIEF; +#ifdef DEBUG + else if (c != 'p') + abort(); +#endif + else + path = defpath; + + cmd = *argptr; + if (verify && cmd) + return describe_command(out1, cmd, path, verify - VERIFY_BRIEF); + + return 0; +} diff --git a/bin/dash/src/exec.h b/bin/dash/src/exec.h new file mode 100644 index 00000000..423b07e6 --- /dev/null +++ b/bin/dash/src/exec.h @@ -0,0 +1,84 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)exec.h 8.3 (Berkeley) 6/8/95 + */ + +/* values of cmdtype */ +#define CMDUNKNOWN -1 /* no entry in table for command */ +#define CMDNORMAL 0 /* command is an executable program */ +#define CMDFUNCTION 1 /* command is a shell function */ +#define CMDBUILTIN 2 /* command is a shell builtin */ + + +struct cmdentry { + int cmdtype; + union param { + int index; + const struct builtincmd *cmd; + struct funcnode *func; + } u; +}; + + +/* action to find_command() */ +#define DO_ERR 0x01 /* prints errors */ +#define DO_ABS 0x02 /* checks absolute paths */ +#define DO_NOFUNC 0x04 /* don't return shell functions, for command */ +#define DO_ALTPATH 0x08 /* using alternate path */ +#define DO_REGBLTIN 0x10 /* regular built-ins and functions only */ + +union node; + +extern const char *pathopt; /* set by padvance */ + +void shellexec(char **, const char *, int) + __attribute__((__noreturn__)); +int padvance_magic(const char **path, const char *name, int magic); +int hashcmd(int, char **); +void find_command(char *, struct cmdentry *, int, const char *); +struct builtincmd *find_builtin(const char *); +void hashcd(void); +void changepath(const char *); +#ifdef notdef +void getcmdentry(char *, struct cmdentry *); +#endif +void defun(union node *); +void unsetfunc(const char *); +int typecmd(int, char **); +int commandcmd(int, char **); + +static inline int padvance(const char **path, const char *name) +{ + return padvance_magic(path, name, 1); +} diff --git a/bin/dash/src/expand.c b/bin/dash/src/expand.c new file mode 100644 index 00000000..1730670e --- /dev/null +++ b/bin/dash/src/expand.c @@ -0,0 +1,1753 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <sys/time.h> +#include <sys/stat.h> +#include <dirent.h> +#include <unistd.h> +#ifdef HAVE_GETPWNAM +#include <pwd.h> +#endif +#include <stdlib.h> +#include <stdio.h> +#include <inttypes.h> +#include <limits.h> +#include <string.h> +#ifdef HAVE_FNMATCH +#include <fnmatch.h> +#endif +#ifdef HAVE_GLOB +#include <glob.h> +#endif +#include <ctype.h> +#include <stdbool.h> + +/* + * Routines to expand arguments to commands. We have to deal with + * backquotes, shell variables, and file metacharacters. + */ + +#include "shell.h" +#include "main.h" +#include "nodes.h" +#include "eval.h" +#include "expand.h" +#include "syntax.h" +#include "parser.h" +#include "jobs.h" +#include "options.h" +#include "var.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "mystring.h" +#include "show.h" +#include "system.h" + +/* + * _rmescape() flags + */ +#define RMESCAPE_ALLOC 0x1 /* Allocate a new string */ +#define RMESCAPE_GLOB 0x2 /* Add backslashes for glob */ +#define RMESCAPE_GROW 0x8 /* Grow strings instead of stalloc */ +#define RMESCAPE_HEAP 0x10 /* Malloc strings instead of stalloc */ + +/* Add CTLESC when necessary. */ +#define QUOTES_ESC (EXP_FULL | EXP_CASE) + +/* + * Structure specifying which parts of the string should be searched + * for IFS characters. + */ + +struct ifsregion { + struct ifsregion *next; /* next region in list */ + int begoff; /* offset of start of region */ + int endoff; /* offset of end of region */ + int nulonly; /* search for nul bytes only */ +}; + +/* output of current string */ +static char *expdest; +/* list of back quote expressions */ +static struct nodelist *argbackq; +/* first struct in list of ifs regions */ +static struct ifsregion ifsfirst; +/* last struct in list */ +static struct ifsregion *ifslastp; +/* holds expanded arg list */ +static struct arglist exparg; + +static char *argstr(char *p, int flag); +static char *exptilde(char *startp, int flag); +static char *expari(char *start, int flag); +STATIC void expbackq(union node *, int); +STATIC char *evalvar(char *, int); +static size_t strtodest(const char *p, int flags); +static size_t memtodest(const char *p, size_t len, int flags); +STATIC ssize_t varvalue(char *, int, int, int); +STATIC void expandmeta(struct strlist *); +#ifdef HAVE_GLOB +STATIC void addglob(const glob_t *); +#else +STATIC void expmeta(char *, unsigned, unsigned); +STATIC struct strlist *expsort(struct strlist *); +STATIC struct strlist *msort(struct strlist *, int); +#endif +STATIC void addfname(char *); +STATIC int patmatch(char *, const char *); +#ifndef HAVE_FNMATCH +STATIC int pmatch(const char *, const char *); +#else +#define pmatch(a, b) !fnmatch((a), (b), 0) +#endif +static size_t cvtnum(intmax_t num, int flags); +STATIC size_t esclen(const char *, const char *); +STATIC char *scanleft(char *, char *, char *, char *, int, int); +STATIC char *scanright(char *, char *, char *, char *, int, int); +STATIC void varunset(const char *, const char *, const char *, int) + __attribute__((__noreturn__)); + + +/* + * Prepare a pattern for a glob(3) call. + * + * Returns an stalloced string. + */ + +STATIC inline char * +preglob(const char *pattern, int flag) { + flag |= RMESCAPE_GLOB; + return _rmescapes((char *)pattern, flag); +} + + +STATIC size_t +esclen(const char *start, const char *p) { + size_t esc = 0; + + while (p > start && *--p == (char)CTLESC) { + esc++; + } + return esc; +} + + +static inline const char *getpwhome(const char *name) +{ +#ifdef HAVE_GETPWNAM + struct passwd *pw = getpwnam(name); + return pw ? pw->pw_dir : 0; +#else + return 0; +#endif +} + + +/* + * Perform variable substitution and command substitution on an argument, + * placing the resulting list of arguments in arglist. If EXP_FULL is true, + * perform splitting and file name expansion. When arglist is NULL, perform + * here document expansion. + */ + +void +expandarg(union node *arg, struct arglist *arglist, int flag) +{ + struct strlist *sp; + char *p; + + argbackq = arg->narg.backquote; + STARTSTACKSTR(expdest); + argstr(arg->narg.text, flag); + if (arglist == NULL) { + /* here document expanded */ + goto out; + } + p = grabstackstr(expdest); + exparg.lastp = &exparg.list; + /* + * TODO - EXP_REDIR + */ + if (flag & EXP_FULL) { + ifsbreakup(p, -1, &exparg); + *exparg.lastp = NULL; + exparg.lastp = &exparg.list; + expandmeta(exparg.list); + } else { + sp = (struct strlist *)stalloc(sizeof (struct strlist)); + sp->text = p; + *exparg.lastp = sp; + exparg.lastp = &sp->next; + } + *exparg.lastp = NULL; + if (exparg.list) { + *arglist->lastp = exparg.list; + arglist->lastp = exparg.lastp; + } + +out: + ifsfree(); +} + + + +/* + * Perform variable and command substitution. If EXP_FULL is set, output CTLESC + * characters to allow for further processing. Otherwise treat + * $@ like $* since no splitting will be performed. + */ + +static char *argstr(char *p, int flag) +{ + static const char spclchars[] = { + '=', + ':', + CTLQUOTEMARK, + CTLENDVAR, + CTLESC, + CTLVAR, + CTLBACKQ, + CTLARI, + CTLENDARI, + 0 + }; + const char *reject = spclchars; + int c; + int breakall = (flag & (EXP_WORD | EXP_QUOTED)) == EXP_WORD; + int inquotes; + size_t length; + int startloc; + + reject += !!(flag & EXP_VARTILDE2); + reject += flag & EXP_VARTILDE ? 0 : 2; + inquotes = 0; + length = 0; + if (flag & EXP_TILDE) { + flag &= ~EXP_TILDE; +tilde: + if (*p == '~') + p = exptilde(p, flag); + } +start: + startloc = expdest - (char *)stackblock(); + for (;;) { + int end; + + length += strcspn(p + length, reject); + end = 0; + c = (signed char)p[length]; + if (!(c & 0x80) || c == CTLENDARI || c == CTLENDVAR) { + /* + * c == '=' || c == ':' || c == '\0' || + * c == CTLENDARI || c == CTLENDVAR + */ + length++; + /* c == '\0' || c == CTLENDARI || c == CTLENDVAR */ + end = !!((c - 1) & 0x80); + } + if (length > 0 && !(flag & EXP_DISCARD)) { + int newloc; + char *q; + + q = stnputs(p, length, expdest); + q[-1] &= end - 1; + expdest = q - (flag & EXP_WORD ? end : 0); + newloc = q - (char *)stackblock() - end; + if (breakall && !inquotes && newloc > startloc) { + recordregion(startloc, newloc, 0); + } + startloc = newloc; + } + p += length + 1; + length = 0; + + if (end) + break; + + switch (c) { + case '=': + flag |= EXP_VARTILDE2; + reject++; + /* fall through */ + case ':': + /* + * sort of a hack - expand tildes in variable + * assignments (after the first '=' and after ':'s). + */ + if (*--p == '~') { + goto tilde; + } + continue; + case CTLQUOTEMARK: + /* "$@" syntax adherence hack */ + if (!inquotes && !memcmp(p, dolatstr + 1, + DOLATSTRLEN - 1)) { + p = evalvar(p + 1, flag | EXP_QUOTED) + 1; + goto start; + } + inquotes ^= EXP_QUOTED; +addquote: + if (flag & QUOTES_ESC) { + p--; + length++; + startloc++; + } + break; + case CTLESC: + startloc++; + length++; + goto addquote; + case CTLVAR: + p = evalvar(p, flag | inquotes); + goto start; + case CTLBACKQ: + expbackq(argbackq->n, flag | inquotes); + goto start; + case CTLARI: + p = expari(p, flag | inquotes); + goto start; + } + } + return p - 1; +} + +static char *exptilde(char *startp, int flag) +{ + signed char c; + char *name; + const char *home; + char *p; + + p = startp; + name = p + 1; + + while ((c = *++p) != '\0') { + switch(c) { + case CTLESC: + return (startp); + case CTLQUOTEMARK: + return (startp); + case ':': + if (flag & EXP_VARTILDE) + goto done; + break; + case '/': + case CTLENDVAR: + goto done; + } + } +done: + if (flag & EXP_DISCARD) + goto out; + *p = '\0'; + if (*name == '\0') { + home = lookupvar(homestr); + } else { + home = getpwhome(name); + } + *p = c; + if (!home) + goto lose; + strtodest(home, flag | EXP_QUOTED); +out: + return (p); +lose: + return (startp); +} + + +void +removerecordregions(int endoff) +{ + if (ifslastp == NULL) + return; + + if (ifsfirst.endoff > endoff) { + while (ifsfirst.next != NULL) { + struct ifsregion *ifsp; + INTOFF; + ifsp = ifsfirst.next->next; + ckfree(ifsfirst.next); + ifsfirst.next = ifsp; + INTON; + } + if (ifsfirst.begoff > endoff) + ifslastp = NULL; + else { + ifslastp = &ifsfirst; + ifsfirst.endoff = endoff; + } + return; + } + + ifslastp = &ifsfirst; + while (ifslastp->next && ifslastp->next->begoff < endoff) + ifslastp=ifslastp->next; + while (ifslastp->next != NULL) { + struct ifsregion *ifsp; + INTOFF; + ifsp = ifslastp->next->next; + ckfree(ifslastp->next); + ifslastp->next = ifsp; + INTON; + } + if (ifslastp->endoff > endoff) + ifslastp->endoff = endoff; +} + + +/* + * Expand arithmetic expression. Backup to start of expression, + * evaluate, place result in (backed up) result, adjust string position. + */ +static char *expari(char *start, int flag) +{ + struct stackmark sm; + int begoff; + int endoff; + int len; + intmax_t result; + char *p; + + p = stackblock(); + begoff = expdest - p; + p = argstr(start, flag & EXP_DISCARD); + + if (flag & EXP_DISCARD) + goto out; + + start = stackblock(); + endoff = expdest - start; + start += begoff; + STADJUST(start - expdest, expdest); + + removerecordregions(begoff); + + if (likely(flag & QUOTES_ESC)) + rmescapes(start); + + pushstackmark(&sm, endoff); + result = arith(start); + popstackmark(&sm); + + len = cvtnum(result, flag); + + if (likely(!(flag & EXP_QUOTED))) + recordregion(begoff, begoff + len, 0); + +out: + return p; +} + + +/* + * Expand stuff in backwards quotes. + */ + +STATIC void +expbackq(union node *cmd, int flag) +{ + struct backcmd in; + int i; + char buf[128]; + char *p; + char *dest; + int startloc; + struct stackmark smark; + + if (flag & EXP_DISCARD) + goto out; + + INTOFF; + startloc = expdest - (char *)stackblock(); + pushstackmark(&smark, startloc); + evalbackcmd(cmd, (struct backcmd *) &in); + popstackmark(&smark); + + p = in.buf; + i = in.nleft; + if (i == 0) + goto read; + for (;;) { + memtodest(p, i, flag); +read: + if (in.fd < 0) + break; + do { + i = read(in.fd, buf, sizeof buf); + } while (i < 0 && errno == EINTR); + TRACE(("expbackq: read returns %d\n", i)); + if (i <= 0) + break; + p = buf; + } + + if (in.buf) + ckfree(in.buf); + if (in.fd >= 0) { + close(in.fd); + back_exitstatus = waitforjob(in.jp); + } + INTON; + + /* Eat all trailing newlines */ + dest = expdest; + for (; dest > ((char *)stackblock() + startloc) && dest[-1] == '\n';) + STUNPUTC(dest); + expdest = dest; + + if (!(flag & EXP_QUOTED)) + recordregion(startloc, dest - (char *)stackblock(), 0); + TRACE(("evalbackq: size=%d: \"%.*s\"\n", + (dest - (char *)stackblock()) - startloc, + (dest - (char *)stackblock()) - startloc, + stackblock() + startloc)); + +out: + argbackq = argbackq->next; +} + + +STATIC char * +scanleft( + char *startp, char *rmesc, char *rmescend, char *str, int quotes, + int zero +) { + char *loc; + char *loc2; + char c; + + loc = startp; + loc2 = rmesc; + do { + int match; + const char *s = loc2; + c = *loc2; + if (zero) { + *loc2 = '\0'; + s = rmesc; + } + match = pmatch(str, s); + *loc2 = c; + if (match) + return loc; + if (quotes && *loc == (char)CTLESC) + loc++; + loc++; + loc2++; + } while (c); + return 0; +} + + +STATIC char * +scanright( + char *startp, char *rmesc, char *rmescend, char *str, int quotes, + int zero +) { + int esc = 0; + char *loc; + char *loc2; + + for (loc = str - 1, loc2 = rmescend; loc >= startp; loc2--) { + int match; + char c = *loc2; + const char *s = loc2; + if (zero) { + *loc2 = '\0'; + s = rmesc; + } + match = pmatch(str, s); + *loc2 = c; + if (match) + return loc; + loc--; + if (quotes) { + if (--esc < 0) { + esc = esclen(startp, loc); + } + if (esc % 2) { + esc--; + loc--; + } + } + } + return 0; +} + +static char *subevalvar(char *start, char *str, int strloc, int startloc, + int varflags, int flag) +{ + int subtype = varflags & VSTYPE; + int quotes = flag & QUOTES_ESC; + char *startp; + char *loc; + long amount; + char *rmesc, *rmescend; + int zero; + char *(*scan)(char *, char *, char *, char *, int , int); + char *p; + + p = argstr(start, (flag & EXP_DISCARD) | EXP_TILDE | + (str ? 0 : EXP_CASE)); + if (flag & EXP_DISCARD) + return p; + + startp = stackblock() + startloc; + + switch (subtype) { + case VSASSIGN: + setvar(str, startp, 0); + + loc = startp; + goto out; + + case VSQUESTION: + varunset(start, str, startp, varflags); + /* NOTREACHED */ + } + + subtype -= VSTRIMRIGHT; +#ifdef DEBUG + if (subtype < 0 || subtype > 3) + abort(); +#endif + + rmesc = startp; + rmescend = stackblock() + strloc; + if (quotes) { + rmesc = _rmescapes(startp, RMESCAPE_ALLOC | RMESCAPE_GROW); + if (rmesc != startp) { + rmescend = expdest; + startp = stackblock() + startloc; + } + } + rmescend--; + str = stackblock() + strloc; + preglob(str, 0); + + /* zero = subtype == VSTRIMLEFT || subtype == VSTRIMLEFTMAX */ + zero = subtype >> 1; + /* VSTRIMLEFT/VSTRIMRIGHTMAX -> scanleft */ + scan = (subtype & 1) ^ zero ? scanleft : scanright; + + loc = scan(startp, rmesc, rmescend, str, quotes, zero); + if (loc) { + if (zero) { + memmove(startp, loc, str - loc); + loc = startp + (str - loc) - 1; + } + *loc = '\0'; + } else + loc = str - 1; + +out: + amount = loc - expdest; + STADJUST(amount, expdest); + + /* Remove any recorded regions beyond start of variable */ + removerecordregions(startloc); + + return p; +} + + +/* + * Expand a variable, and return a pointer to the next character in the + * input string. + */ +STATIC char * +evalvar(char *p, int flag) +{ + int subtype; + int varflags; + char *var; + int patloc; + int startloc; + ssize_t varlen; + int discard; + int quoted; + + varflags = *p++; + subtype = varflags & VSTYPE; + + quoted = flag & EXP_QUOTED; + var = p; + startloc = expdest - (char *)stackblock(); + p = strchr(p, '=') + 1; + +again: + varlen = varvalue(var, varflags, flag, quoted); + if (varflags & VSNUL) + varlen--; + + discard = varlen < 0 ? EXP_DISCARD : 0; + + switch (subtype) { + case VSPLUS: + discard ^= EXP_DISCARD; + /* fall through */ + + case 0: + case VSMINUS: + p = argstr(p, flag | EXP_TILDE | EXP_WORD | + (discard ^ EXP_DISCARD)); + goto record; + + case VSASSIGN: + case VSQUESTION: + p = subevalvar(p, var, 0, startloc, varflags, + (flag & ~QUOTES_ESC) | + (discard ^ EXP_DISCARD)); + + if ((flag | ~discard) & EXP_DISCARD) + goto record; + + varflags &= ~VSNUL; + subtype = VSNORMAL; + goto again; + } + + if ((discard & ~flag) && uflag) + varunset(p, var, 0, 0); + + if (subtype == VSLENGTH) { + p++; + if (flag & EXP_DISCARD) + return p; + cvtnum(varlen > 0 ? varlen : 0, flag); + goto really_record; + } + + if (subtype == VSNORMAL) + goto record; + +#ifdef DEBUG + switch (subtype) { + case VSTRIMLEFT: + case VSTRIMLEFTMAX: + case VSTRIMRIGHT: + case VSTRIMRIGHTMAX: + break; + default: + abort(); + } +#endif + + flag |= discard; + if (!(flag & EXP_DISCARD)) { + /* + * Terminate the string and start recording the pattern + * right after it + */ + STPUTC('\0', expdest); + } + + patloc = expdest - (char *)stackblock(); + p = subevalvar(p, NULL, patloc, startloc, varflags, flag); + +record: + if ((flag | discard) & EXP_DISCARD) + return p; + +really_record: + if (quoted) { + quoted = *var == '@' && shellparam.nparam; + if (!quoted) + return p; + } + recordregion(startloc, expdest - (char *)stackblock(), quoted); + return p; +} + + +/* + * Put a string on the stack. + */ + +static size_t memtodest(const char *p, size_t len, int flags) +{ + const char *syntax = flags & EXP_QUOTED ? DQSYNTAX : BASESYNTAX; + char *q; + char *s; + + if (unlikely(!len)) + return 0; + + q = makestrspace(len * 2, expdest); + s = q; + + do { + int c = (signed char)*p++; + if (c) { + if ((flags & QUOTES_ESC) && + ((syntax[c] == CCTL) || + (flags & EXP_QUOTED && syntax[c] == CBACK))) + USTPUTC(CTLESC, q); + } else if (!(flags & EXP_KEEPNUL)) + continue; + USTPUTC(c, q); + } while (--len); + + expdest = q; + return q - s; +} + + +static size_t strtodest(const char *p, int flags) +{ + size_t len = strlen(p); + memtodest(p, len, flags); + return len; +} + + + +/* + * Add the value of a specialized variable to the stack string. + */ + +STATIC ssize_t +varvalue(char *name, int varflags, int flags, int quoted) +{ + int num; + char *p; + int i; + int sep; + char sepc; + char **ap; + int subtype = varflags & VSTYPE; + int discard = (subtype == VSPLUS || subtype == VSLENGTH) | + (flags & EXP_DISCARD); + ssize_t len = 0; + char c; + + if (!subtype) { + if (discard) + return -1; + + sh_error("Bad substitution"); + } + + flags |= EXP_KEEPNUL; + flags &= discard ? ~QUOTES_ESC : ~0; + sep = (flags & EXP_FULL) << CHAR_BIT; + + switch (*name) { + case '$': + num = rootpid; + goto numvar; + case '?': + num = exitstatus; + goto numvar; + case '#': + num = shellparam.nparam; + goto numvar; + case '!': + num = backgndpid; + if (num == 0) + return -1; +numvar: + len = cvtnum(num, flags); + break; + case '-': + p = makestrspace(NOPTS, expdest); + for (i = NOPTS - 1; i >= 0; i--) { + if (optlist[i] && optletters[i]) { + USTPUTC(optletters[i], p); + len++; + } + } + expdest = p; + break; + case '@': + if (quoted && sep) + goto param; + /* fall through */ + case '*': + /* We will set c to 0 or ~0 depending on whether + * we're doing field splitting. We won't do field + * splitting if either we're quoted or sep is zero. + * + * Instead of testing (quoted || !sep) the following + * trick optimises away any branches by using the + * fact that EXP_QUOTED (which is the only bit that + * can be set in quoted) is the same as EXP_FULL << + * CHAR_BIT (which is the only bit that can be set + * in sep). + */ +#if EXP_QUOTED >> CHAR_BIT != EXP_FULL +#error The following two lines expect EXP_QUOTED == EXP_FULL << CHAR_BIT +#endif + c = !((quoted | ~sep) & EXP_QUOTED) - 1; + sep &= ~quoted; + sep |= ifsset() ? (unsigned char)(c & ifsval()[0]) : ' '; +param: + sepc = sep; + if (!(ap = shellparam.p)) + return -1; + while ((p = *ap++)) { + len += strtodest(p, flags); + + if (*ap && sep) { + len++; + memtodest(&sepc, 1, flags); + } + } + break; + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + num = atoi(name); + if (num < 0 || num > shellparam.nparam) + return -1; + p = num ? shellparam.p[num - 1] : arg0; + goto value; + default: + p = lookupvar(name); +value: + if (!p) + return -1; + + len = strtodest(p, flags); + break; + } + + if (discard) + STADJUST(-len, expdest); + + return len; +} + + + +/* + * Record the fact that we have to scan this region of the + * string for IFS characters. + */ + +void +recordregion(int start, int end, int nulonly) +{ + struct ifsregion *ifsp; + + if (ifslastp == NULL) { + ifsp = &ifsfirst; + } else { + INTOFF; + ifsp = (struct ifsregion *)ckmalloc(sizeof (struct ifsregion)); + ifsp->next = NULL; + ifslastp->next = ifsp; + INTON; + } + ifslastp = ifsp; + ifslastp->begoff = start; + ifslastp->endoff = end; + ifslastp->nulonly = nulonly; +} + + + +/* + * Break the argument string into pieces based upon IFS and add the + * strings to the argument list. The regions of the string to be + * searched for IFS characters have been stored by recordregion. + * If maxargs is non-negative, at most maxargs arguments will be created, by + * joining together the last arguments. + */ +void +ifsbreakup(char *string, int maxargs, struct arglist *arglist) +{ + struct ifsregion *ifsp; + struct strlist *sp; + char *start; + char *p; + char *q; + char *r = NULL; + const char *ifs, *realifs; + int ifsspc; + int nulonly; + + + start = string; + if (ifslastp != NULL) { + ifsspc = 0; + nulonly = 0; + realifs = ifsset() ? ifsval() : defifs; + ifsp = &ifsfirst; + do { + int afternul; + + p = string + ifsp->begoff; + afternul = nulonly; + nulonly = ifsp->nulonly; + ifs = nulonly ? nullstr : realifs; + ifsspc = 0; + while (p < string + ifsp->endoff) { + int c; + bool isifs; + bool isdefifs; + + q = p; + c = *p++; + if (c == (char)CTLESC) + c = *p++; + + isifs = strchr(ifs, c); + isdefifs = false; + if (isifs) + isdefifs = strchr(defifs, c); + + /* If only reading one more argument: + * If we have exactly one field, + * read that field without its terminator. + * If we have more than one field, + * read all fields including their terminators, + * except for trailing IFS whitespace. + * + * This means that if we have only IFS + * characters left, and at most one + * of them is non-whitespace, we stop + * reading here. + * Otherwise, we read all the remaining + * characters except for trailing + * IFS whitespace. + * + * In any case, r indicates the start + * of the characters to remove, or NULL + * if no characters should be removed. + */ + if (!maxargs) { + if (isdefifs) { + if (!r) + r = q; + continue; + } + + if (!(isifs && ifsspc)) + r = NULL; + + ifsspc = 0; + continue; + } + + if (ifsspc) { + if (isifs) + q = p; + + start = q; + + if (isdefifs) + continue; + + isifs = false; + } + + if (isifs) { + if (!(afternul || nulonly)) + ifsspc = isdefifs; + /* Ignore IFS whitespace at start */ + if (q == start && ifsspc) { + start = p; + ifsspc = 0; + continue; + } + if (maxargs > 0 && !--maxargs) { + r = q; + continue; + } + *q = '\0'; + sp = (struct strlist *)stalloc(sizeof *sp); + sp->text = start; + *arglist->lastp = sp; + arglist->lastp = &sp->next; + start = p; + continue; + } + + ifsspc = 0; + } + } while ((ifsp = ifsp->next) != NULL); + if (nulonly) + goto add; + } + + if (r) + *r = '\0'; + + if (!*start) + return; + +add: + sp = (struct strlist *)stalloc(sizeof *sp); + sp->text = start; + *arglist->lastp = sp; + arglist->lastp = &sp->next; +} + +void ifsfree(void) +{ + struct ifsregion *p = ifsfirst.next; + + if (!p) + goto out; + + INTOFF; + do { + struct ifsregion *ifsp; + ifsp = p->next; + ckfree(p); + p = ifsp; + } while (p); + ifsfirst.next = NULL; + INTON; + +out: + ifslastp = NULL; +} + + + +/* + * Expand shell metacharacters. At this point, the only control characters + * should be escapes. The results are stored in the list exparg. + */ + +#ifdef HAVE_GLOB +STATIC void +expandmeta(struct strlist *str) +{ + /* TODO - EXP_REDIR */ + + while (str) { + const char *p; + glob_t pglob; + int i; + + if (fflag) + goto nometa; + INTOFF; + p = preglob(str->text, RMESCAPE_ALLOC | RMESCAPE_HEAP); + i = glob(p, GLOB_NOMAGIC, 0, &pglob); + if (p != str->text) + ckfree(p); + switch (i) { + case 0: + if ((pglob.gl_flags & (GLOB_NOMAGIC | GLOB_NOCHECK)) == + (GLOB_NOMAGIC | GLOB_NOCHECK)) + goto nometa2; + addglob(&pglob); + globfree(&pglob); + INTON; + break; + case GLOB_NOMATCH: +nometa2: + globfree(&pglob); + INTON; +nometa: + *exparg.lastp = str; + rmescapes(str->text); + exparg.lastp = &str->next; + break; + default: /* GLOB_NOSPACE */ + sh_error("Out of space"); + } + str = str->next; + } +} + + +/* + * Add the result of glob(3) to the list. + */ + +STATIC void +addglob(pglob) + const glob_t *pglob; +{ + char **p = pglob->gl_pathv; + + do { + addfname(*p); + } while (*++p); +} + + +#else /* HAVE_GLOB */ +STATIC char *expdir; +STATIC unsigned expdir_max; + + +STATIC void +expandmeta(struct strlist *str) +{ + static const char metachars[] = { + '*', '?', '[', 0 + }; + /* TODO - EXP_REDIR */ + + while (str) { + struct strlist **savelastp; + struct strlist *sp; + char *p; + unsigned len; + + if (fflag) + goto nometa; + if (!strpbrk(str->text, metachars)) + goto nometa; + savelastp = exparg.lastp; + + INTOFF; + p = preglob(str->text, RMESCAPE_ALLOC | RMESCAPE_HEAP); + len = strlen(p); + expdir_max = len + PATH_MAX; + expdir = ckmalloc(expdir_max); + + expmeta(p, len, 0); + ckfree(expdir); + if (p != str->text) + ckfree(p); + INTON; + if (exparg.lastp == savelastp) { + /* + * no matches + */ +nometa: + *exparg.lastp = str; + rmescapes(str->text); + exparg.lastp = &str->next; + } else { + *exparg.lastp = NULL; + *savelastp = sp = expsort(*savelastp); + while (sp->next != NULL) + sp = sp->next; + exparg.lastp = &sp->next; + } + str = str->next; + } +} + + +/* + * Do metacharacter (i.e. *, ?, [...]) expansion. + */ + +STATIC void +expmeta(char *name, unsigned name_len, unsigned expdir_len) +{ + char *enddir = expdir + expdir_len; + char *p; + const char *cp; + char *start; + char *endname; + int metaflag; + struct stat64 statb; + DIR *dirp; + struct dirent64 *dp; + int atend; + int matchdot; + int esc; + + metaflag = 0; + start = name; + for (p = name; esc = 0, *p; p += esc + 1) { + if (*p == '*' || *p == '?') + metaflag = 1; + else if (*p == '[') { + char *q = p + 1; + if (*q == '!') + q++; + for (;;) { + if (*q == '\\') + q++; + if (*q == '/' || *q == '\0') + break; + if (*++q == ']') { + metaflag = 1; + break; + } + } + } else { + if (*p == '\\' && p[1]) + esc++; + if (p[esc] == '/') { + if (metaflag) + break; + start = p + esc + 1; + } + } + } + if (metaflag == 0) { /* we've reached the end of the file name */ + if (!expdir_len) + return; + p = name; + do { + if (*p == '\\' && p[1]) + p++; + *enddir++ = *p; + } while (*p++); + if (lstat64(expdir, &statb) >= 0) + addfname(expdir); + return; + } + endname = p; + if (name < start) { + p = name; + do { + if (*p == '\\' && p[1]) + p++; + *enddir++ = *p++; + } while (p < start); + } + *enddir = 0; + cp = expdir; + expdir_len = enddir - cp; + if (!expdir_len) + cp = "."; + if ((dirp = opendir(cp)) == NULL) + return; + if (*endname == 0) { + atend = 1; + } else { + atend = 0; + *endname = '\0'; + endname += esc + 1; + } + name_len -= endname - name; + matchdot = 0; + p = start; + if (*p == '\\') + p++; + if (*p == '.') + matchdot++; + while (! int_pending() && (dp = readdir64(dirp)) != NULL) { + if (dp->d_name[0] == '.' && ! matchdot) + continue; + if (pmatch(start, dp->d_name)) { + if (atend) { + scopy(dp->d_name, enddir); + addfname(expdir); + } else { + unsigned offset; + unsigned len; + + p = stpcpy(enddir, dp->d_name); + *p = '/'; + + offset = p - expdir + 1; + len = offset + name_len + NAME_MAX; + if (len > expdir_max) { + len += PATH_MAX; + expdir = ckrealloc(expdir, len); + expdir_max = len; + } + + expmeta(endname, name_len, offset); + enddir = expdir + expdir_len; + } + } + } + closedir(dirp); + if (! atend) + endname[-esc - 1] = esc ? '\\' : '/'; +} +#endif /* HAVE_GLOB */ + + +/* + * Add a file name to the list. + */ + +STATIC void +addfname(char *name) +{ + struct strlist *sp; + + sp = (struct strlist *)stalloc(sizeof *sp); + sp->text = sstrdup(name); + *exparg.lastp = sp; + exparg.lastp = &sp->next; +} + + +#ifndef HAVE_GLOB +/* + * Sort the results of file name expansion. It calculates the number of + * strings to sort and then calls msort (short for merge sort) to do the + * work. + */ + +STATIC struct strlist * +expsort(struct strlist *str) +{ + int len; + struct strlist *sp; + + len = 0; + for (sp = str ; sp ; sp = sp->next) + len++; + return msort(str, len); +} + + +STATIC struct strlist * +msort(struct strlist *list, int len) +{ + struct strlist *p, *q = NULL; + struct strlist **lpp; + int half; + int n; + + if (len <= 1) + return list; + half = len >> 1; + p = list; + for (n = half ; --n >= 0 ; ) { + q = p; + p = p->next; + } + q->next = NULL; /* terminate first half of list */ + q = msort(list, half); /* sort first half of list */ + p = msort(p, len - half); /* sort second half */ + lpp = &list; + for (;;) { + if (strcmp(p->text, q->text) < 0) { + *lpp = p; + lpp = &p->next; + if ((p = *lpp) == NULL) { + *lpp = q; + break; + } + } else { + *lpp = q; + lpp = &q->next; + if ((q = *lpp) == NULL) { + *lpp = p; + break; + } + } + } + return list; +} +#endif + + +/* + * Returns true if the pattern matches the string. + */ + +STATIC inline int +patmatch(char *pattern, const char *string) +{ + return pmatch(preglob(pattern, 0), string); +} + + +#ifndef HAVE_FNMATCH +STATIC int ccmatch(const char *p, int chr, const char **r) +{ + static const struct class { + char name[10]; + int (*fn)(int); + } classes[] = { + { .name = ":alnum:]", .fn = isalnum }, + { .name = ":cntrl:]", .fn = iscntrl }, + { .name = ":lower:]", .fn = islower }, + { .name = ":space:]", .fn = isspace }, + { .name = ":alpha:]", .fn = isalpha }, + { .name = ":digit:]", .fn = isdigit }, + { .name = ":print:]", .fn = isprint }, + { .name = ":upper:]", .fn = isupper }, + { .name = ":blank:]", .fn = isblank }, + { .name = ":graph:]", .fn = isgraph }, + { .name = ":punct:]", .fn = ispunct }, + { .name = ":xdigit:]", .fn = isxdigit }, + }; + const struct class *class, *end; + + end = classes + sizeof(classes) / sizeof(classes[0]); + for (class = classes; class < end; class++) { + const char *q; + + q = prefix(p, class->name); + if (!q) + continue; + *r = q; + return class->fn(chr); + } + + *r = 0; + return 0; +} + +STATIC int +pmatch(const char *pattern, const char *string) +{ + const char *p, *q; + char c; + + p = pattern; + q = string; + for (;;) { + switch (c = *p++) { + case '\0': + goto breakloop; + case '\\': + if (*p) { + c = *p++; + } + goto dft; + case '?': + if (*q++ == '\0') + return 0; + break; + case '*': + c = *p; + while (c == '*') + c = *++p; + if (c != '\\' && c != '?' && c != '*' && c != '[') { + while (*q != c) { + if (*q == '\0') + return 0; + q++; + } + } + do { + if (pmatch(p, q)) + return 1; + } while (*q++ != '\0'); + return 0; + case '[': { + const char *startp; + int invert, found; + char chr; + + startp = p; + invert = 0; + if (*p == '!') { + invert++; + p++; + } + found = 0; + chr = *q; + if (chr == '\0') + return 0; + c = *p++; + do { + if (!c) { + p = startp; + c = '['; + goto dft; + } + if (c == '[') { + const char *r; + + found |= !!ccmatch(p, chr, &r); + if (r) { + p = r; + continue; + } + } else if (c == '\\') + c = *p++; + if (*p == '-' && p[1] != ']') { + p++; + if (*p == '\\') + p++; + if (chr >= c && chr <= *p) + found = 1; + p++; + } else { + if (chr == c) + found = 1; + } + } while ((c = *p++) != ']'); + if (found == invert) + return 0; + q++; + break; + } +dft: default: + if (*q++ != c) + return 0; + break; + } + } +breakloop: + if (*q != '\0') + return 0; + return 1; +} +#endif + + + +/* + * Remove any CTLESC characters from a string. + */ + +char * +_rmescapes(char *str, int flag) +{ + char *p, *q, *r; + int notescaped; + int globbing; + + p = strpbrk(str, qchars); + if (!p) { + return str; + } + q = p; + r = str; + if (flag & RMESCAPE_ALLOC) { + size_t len = p - str; + size_t fulllen = len + strlen(p) + 1; + + if (flag & RMESCAPE_GROW) { + int strloc = str - (char *)stackblock(); + + r = makestrspace(fulllen, expdest); + str = (char *)stackblock() + strloc; + p = str + len; + } else if (flag & RMESCAPE_HEAP) { + r = ckmalloc(fulllen); + } else { + r = stalloc(fulllen); + } + q = r; + if (len > 0) { + q = mempcpy(q, str, len); + } + } + globbing = flag & RMESCAPE_GLOB; + notescaped = globbing; + while (*p) { + if (*p == (char)CTLQUOTEMARK) { + p++; + notescaped = globbing; + continue; + } + if (*p == '\\') { + /* naked back slash */ + notescaped = 0; + goto copy; + } + if (*p == (char)CTLESC) { + p++; + if (notescaped) + *q++ = '\\'; + } + notescaped = globbing; +copy: + *q++ = *p++; + } + *q = '\0'; + if (flag & RMESCAPE_GROW) { + expdest = r; + STADJUST(q - r + 1, expdest); + } + return r; +} + + + +/* + * See if a pattern matches in a case statement. + */ + +int +casematch(union node *pattern, char *val) +{ + struct stackmark smark; + int result; + + setstackmark(&smark); + argbackq = pattern->narg.backquote; + STARTSTACKSTR(expdest); + argstr(pattern->narg.text, EXP_TILDE | EXP_CASE); + ifsfree(); + result = patmatch(stackblock(), val); + popstackmark(&smark); + return result; +} + +/* + * Our own itoa(). + */ + +static size_t cvtnum(intmax_t num, int flags) +{ + int len = max_int_length(sizeof(num)); + char buf[len]; + + len = fmtstr(buf, len, "%" PRIdMAX, num); + return memtodest(buf, len, flags); +} + +STATIC void +varunset(const char *end, const char *var, const char *umsg, int varflags) +{ + const char *msg; + const char *tail; + + tail = nullstr; + msg = "parameter not set"; + if (umsg) { + if (*end == (char)CTLENDVAR) { + if (varflags & VSNUL) + tail = " or null"; + } else + msg = umsg; + } + sh_error("%.*s: %s%s", end - var - 1, var, msg, tail); +} + +#ifdef mkinit + +INCLUDE "expand.h" + +EXITRESET { + ifsfree(); +} + +#endif diff --git a/bin/dash/src/expand.h b/bin/dash/src/expand.h new file mode 100644 index 00000000..c44b8481 --- /dev/null +++ b/bin/dash/src/expand.h @@ -0,0 +1,83 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)expand.h 8.2 (Berkeley) 5/4/95 + */ + +#include <inttypes.h> + +struct strlist { + struct strlist *next; + char *text; +}; + + +struct arglist { + struct strlist *list; + struct strlist **lastp; +}; + +/* + * expandarg() flags + */ +#define EXP_FULL 0x1 /* perform word splitting & file globbing */ +#define EXP_TILDE 0x2 /* do normal tilde expansion */ +#define EXP_VARTILDE 0x4 /* expand tildes in an assignment */ +#define EXP_REDIR 0x8 /* file glob for a redirection (1 match only) */ +#define EXP_CASE 0x10 /* keeps quotes around for CASE pattern */ +#define EXP_VARTILDE2 0x40 /* expand tildes after colons only */ +#define EXP_WORD 0x80 /* expand word in parameter expansion */ +#define EXP_QUOTED 0x100 /* expand word in double quotes */ +#define EXP_KEEPNUL 0x200 /* do not skip NUL characters */ +#define EXP_DISCARD 0x400 /* discard result of expansion */ + + +union node; +void expandarg(union node *, struct arglist *, int); +#define rmescapes(p) _rmescapes((p), 0) +char *_rmescapes(char *, int); +int casematch(union node *, char *); +void recordregion(int, int, int); +void removerecordregions(int); +void ifsbreakup(char *, int, struct arglist *); +void ifsfree(void); + +/* From arith.y */ +intmax_t arith(const char *); +int expcmd(int , char **); +#ifdef USE_LEX +void arith_lex_reset(void); +#else +#define arith_lex_reset() +#endif +int yylex(void); diff --git a/bin/dash/src/funcs/cmv b/bin/dash/src/funcs/cmv new file mode 100644 index 00000000..91a67c53 --- /dev/null +++ b/bin/dash/src/funcs/cmv @@ -0,0 +1,47 @@ +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)cmv 8.2 (Berkeley) 5/4/95 + +# Conditional move--don't replace an existing file. + +cmv() { + if test $# != 2 + then echo "cmv: arg count" + return 2 + fi + if test -f "$2" -o -w "$2" + then echo "$2 exists" + return 2 + fi + /bin/mv "$1" "$2" +} diff --git a/bin/dash/src/funcs/dirs b/bin/dash/src/funcs/dirs new file mode 100644 index 00000000..5f6ce635 --- /dev/null +++ b/bin/dash/src/funcs/dirs @@ -0,0 +1,71 @@ +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)dirs 8.2 (Berkeley) 5/4/95 + +# pushd, popd, and dirs --- written by Chris Bertin +# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris +# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW + +pushd () { + SAVE=`pwd` + if [ "$1" = "" ] + then if [ "$DSTACK" = "" ] + then echo "pushd: directory stack empty." + return 1 + fi + set $DSTACK + cd $1 || return + shift 1 + DSTACK="$*" + else cd $1 > /dev/null || return + fi + DSTACK="$SAVE $DSTACK" + dirs +} + +popd () { + if [ "$DSTACK" = "" ] + then echo "popd: directory stack empty." + return 1 + fi + set $DSTACK + cd $1 + shift + DSTACK=$* + dirs +} + +dirs () { + echo "`pwd` $DSTACK" + return 0 +} diff --git a/bin/dash/src/funcs/kill b/bin/dash/src/funcs/kill new file mode 100644 index 00000000..c5df95f5 --- /dev/null +++ b/bin/dash/src/funcs/kill @@ -0,0 +1,47 @@ +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)kill 8.2 (Berkeley) 5/4/95 + +# Convert job names to process ids and then run /bin/kill. + +kill() { + local args x + args= + for x in "$@" + do case $x in + %*) x=`jobid "$x"` ;; + esac + args="$args $x" + done + /bin/kill $args +} diff --git a/bin/dash/src/funcs/login b/bin/dash/src/funcs/login new file mode 100644 index 00000000..215e5352 --- /dev/null +++ b/bin/dash/src/funcs/login @@ -0,0 +1,36 @@ +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)login 8.2 (Berkeley) 5/4/95 + +# replaces the login builtin in the BSD shell +login () exec login "$@" diff --git a/bin/dash/src/funcs/newgrp b/bin/dash/src/funcs/newgrp new file mode 100644 index 00000000..ec0e7e5a --- /dev/null +++ b/bin/dash/src/funcs/newgrp @@ -0,0 +1,35 @@ +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)newgrp 8.2 (Berkeley) 5/4/95 + +newgrp() exec newgrp "$@" diff --git a/bin/dash/src/funcs/popd b/bin/dash/src/funcs/popd new file mode 100644 index 00000000..7bccf50d --- /dev/null +++ b/bin/dash/src/funcs/popd @@ -0,0 +1,71 @@ +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)popd 8.2 (Berkeley) 5/4/95 + +# pushd, popd, and dirs --- written by Chris Bertin +# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris +# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW + +pushd () { + SAVE=`pwd` + if [ "$1" = "" ] + then if [ "$DSTACK" = "" ] + then echo "pushd: directory stack empty." + return 1 + fi + set $DSTACK + cd $1 || return + shift 1 + DSTACK="$*" + else cd $1 > /dev/null || return + fi + DSTACK="$SAVE $DSTACK" + dirs +} + +popd () { + if [ "$DSTACK" = "" ] + then echo "popd: directory stack empty." + return 1 + fi + set $DSTACK + cd $1 + shift + DSTACK=$* + dirs +} + +dirs () { + echo "`pwd` $DSTACK" + return 0 +} diff --git a/bin/dash/src/funcs/pushd b/bin/dash/src/funcs/pushd new file mode 100644 index 00000000..19ac8e08 --- /dev/null +++ b/bin/dash/src/funcs/pushd @@ -0,0 +1,71 @@ +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)pushd 8.2 (Berkeley) 5/4/95 + +# pushd, popd, and dirs --- written by Chris Bertin +# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris +# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW + +pushd () { + SAVE=`pwd` + if [ "$1" = "" ] + then if [ "$DSTACK" = "" ] + then echo "pushd: directory stack empty." + return 1 + fi + set $DSTACK + cd $1 || return + shift 1 + DSTACK="$*" + else cd $1 > /dev/null || return + fi + DSTACK="$SAVE $DSTACK" + dirs +} + +popd () { + if [ "$DSTACK" = "" ] + then echo "popd: directory stack empty." + return 1 + fi + set $DSTACK + cd $1 + shift + DSTACK=$* + dirs +} + +dirs () { + echo "`pwd` $DSTACK" + return 0 +} diff --git a/bin/dash/src/funcs/suspend b/bin/dash/src/funcs/suspend new file mode 100644 index 00000000..44844678 --- /dev/null +++ b/bin/dash/src/funcs/suspend @@ -0,0 +1,39 @@ +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)suspend 8.2 (Berkeley) 5/4/95 + +suspend() { + local - + set +j + kill -TSTP 0 +} diff --git a/bin/dash/src/histedit.c b/bin/dash/src/histedit.c new file mode 100644 index 00000000..58163314 --- /dev/null +++ b/bin/dash/src/histedit.c @@ -0,0 +1,503 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/param.h> +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <getopt.h> +/* + * Editline and history functions (and glue). + */ +#include "shell.h" +#include "parser.h" +#include "var.h" +#include "options.h" +#include "main.h" +#include "output.h" +#include "mystring.h" +#include "error.h" +#ifndef SMALL +#include "myhistedit.h" +#include "eval.h" +#include "memalloc.h" + +#define MAXHISTLOOPS 4 /* max recursions through fc */ +#define DEFEDITOR "ed" /* default editor *should* be $EDITOR */ + +History *hist; /* history cookie */ +EditLine *el; /* editline cookie */ +int displayhist; +static FILE *el_in, *el_out; + +STATIC const char *fc_replace(const char *, char *, char *); + +#ifdef DEBUG +extern FILE *tracefile; +#endif + +/* + * Set history and editing status. Called whenever the status may + * have changed (figures out what to do). + */ +void +histedit(void) +{ + FILE *el_err; + +#define editing (Eflag || Vflag) + + if (iflag) { + if (!hist) { + /* + * turn history on + */ + INTOFF; + hist = history_init(); + INTON; + + if (hist != NULL) + sethistsize(histsizeval()); + else + out2str("sh: can't initialize history\n"); + } + if (editing && !el && isatty(0)) { /* && isatty(2) ??? */ + /* + * turn editing on + */ + INTOFF; + if (el_in == NULL) + el_in = fdopen(0, "r"); + if (el_out == NULL) + el_out = fdopen(2, "w"); + if (el_in == NULL || el_out == NULL) + goto bad; + el_err = el_out; +#if DEBUG + if (tracefile) + el_err = tracefile; +#endif + el = el_init(arg0, el_in, el_out, el_err); + if (el != NULL) { + if (hist) + el_set(el, EL_HIST, history, hist); + el_set(el, EL_PROMPT, getprompt); + el_set(el, EL_RPROMPT, getrprompt); +#ifdef HAVE__EL_FN_SH_COMPLETE + el_set(el, EL_ADDFN, "sh-complete", "Filename completion", + _el_fn_sh_complete); +#else + el_set(el, EL_ADDFN, "sh-complete", "Filename completion", + _el_fn_complete); +#endif + } else { +bad: + out2str("sh: can't initialize editing\n"); + } + INTON; + } else if (!editing && el) { + INTOFF; + el_end(el); + el = NULL; + INTON; + } + if (el) { + if (Vflag) + el_set(el, EL_EDITOR, "vi"); + else if (Eflag) + el_set(el, EL_EDITOR, "emacs"); + el_source(el, NULL); + el_set(el, EL_BIND, "^I", "sh-complete", NULL); + } + } else { + INTOFF; + if (el) { /* no editing if not interactive */ + el_end(el); + el = NULL; + } + if (hist) { + history_end(hist); + hist = NULL; + } + INTON; + } +} + + +void +sethistsize(const char *hs) +{ + int histsize; + HistEvent he; + + if (hist != NULL) { + if (hs == NULL || *hs == '\0' || + (histsize = atoi(hs)) < 0) + histsize = 100; + history(hist, &he, H_SETSIZE, histsize); + } +} + +void +setterm(const char *term) +{ + if (el != NULL && term != NULL) + if (el_set(el, EL_TERMINAL, term) != 0) { + outfmt(out2, "sh: Can't set terminal type %s\n", term); + outfmt(out2, "sh: Using dumb terminal settings.\n"); + } +} + +/* + * This command is provided since POSIX decided to standardize + * the Korn shell fc command. Oh well... + */ +int +histcmd(int argc, char **argv) +{ + int ch; + const char *editor = NULL; + HistEvent he; + int lflg = 0, nflg = 0, rflg = 0, sflg = 0; + int i, retval; + const char *firststr, *laststr; + int first, last, direction; + char *pat = NULL, *repl; /* ksh "fc old=new" crap */ + static int active = 0; + struct jmploc jmploc; + struct jmploc *volatile savehandler; + char editfile[MAXPATHLEN + 1]; + FILE *efp; +#ifdef __GNUC__ + /* Avoid longjmp clobbering */ + (void) &editor; + (void) &lflg; + (void) &nflg; + (void) &rflg; + (void) &sflg; + (void) &firststr; + (void) &laststr; + (void) &pat; + (void) &repl; + (void) &efp; + (void) &argc; + (void) &argv; +#endif + + if (hist == NULL) + sh_error("history not active"); + + if (argc == 1) + sh_error("missing history argument"); + +#ifdef __GLIBC__ + optind = 0; +#else + optreset = 1; optind = 1; /* initialize getopt */ +#endif + while (not_fcnumber(argv[optind]) && + (ch = getopt(argc, argv, ":e:lnrs")) != -1) + switch ((char)ch) { + case 'e': + editor = optionarg; + break; + case 'l': + lflg = 1; + break; + case 'n': + nflg = 1; + break; + case 'r': + rflg = 1; + break; + case 's': + sflg = 1; + break; + case ':': + sh_error("option -%c expects argument", optopt); + /* NOTREACHED */ + case '?': + default: + sh_error("unknown option: -%c", optopt); + /* NOTREACHED */ + } + argc -= optind, argv += optind; + + /* + * If executing... + */ + if (lflg == 0 || editor || sflg) { + lflg = 0; /* ignore */ + editfile[0] = '\0'; + /* + * Catch interrupts to reset active counter and + * cleanup temp files. + */ + if (setjmp(jmploc.loc)) { + active = 0; + if (*editfile) + unlink(editfile); + handler = savehandler; + longjmp(handler->loc, 1); + } + savehandler = handler; + handler = &jmploc; + if (++active > MAXHISTLOOPS) { + active = 0; + displayhist = 0; + sh_error("called recursively too many times"); + } + /* + * Set editor. + */ + if (sflg == 0) { + if (editor == NULL && + (editor = bltinlookup("FCEDIT")) == NULL && + (editor = bltinlookup("EDITOR")) == NULL) + editor = DEFEDITOR; + if (editor[0] == '-' && editor[1] == '\0') { + sflg = 1; /* no edit */ + editor = NULL; + } + } + } + + /* + * If executing, parse [old=new] now + */ + if (lflg == 0 && argc > 0 && + ((repl = strchr(argv[0], '=')) != NULL)) { + pat = argv[0]; + *repl++ = '\0'; + argc--, argv++; + } + /* + * determine [first] and [last] + */ + switch (argc) { + case 0: + firststr = lflg ? "-16" : "-1"; + laststr = "-1"; + break; + case 1: + firststr = argv[0]; + laststr = lflg ? "-1" : argv[0]; + break; + case 2: + firststr = argv[0]; + laststr = argv[1]; + break; + default: + sh_error("too many args"); + /* NOTREACHED */ + } + /* + * Turn into event numbers. + */ + first = str_to_event(firststr, 0); + last = str_to_event(laststr, 1); + + if (rflg) { + i = last; + last = first; + first = i; + } + /* + * XXX - this should not depend on the event numbers + * always increasing. Add sequence numbers or offset + * to the history element in next (diskbased) release. + */ + direction = first < last ? H_PREV : H_NEXT; + + /* + * If editing, grab a temp file. + */ + if (editor) { + int fd; + INTOFF; /* easier */ + sprintf(editfile, "%s_shXXXXXX", _PATH_TMP); + if ((fd = mkstemp(editfile)) < 0) + sh_error("can't create temporary file %s", editfile); + if ((efp = fdopen(fd, "w")) == NULL) { + close(fd); + sh_error("can't allocate stdio buffer for temp"); + } + } + + /* + * Loop through selected history events. If listing or executing, + * do it now. Otherwise, put into temp file and call the editor + * after. + * + * The history interface needs rethinking, as the following + * convolutions will demonstrate. + */ + history(hist, &he, H_FIRST); + retval = history(hist, &he, H_NEXT_EVENT, first); + for (;retval != -1; retval = history(hist, &he, direction)) { + if (lflg) { + if (!nflg) + out1fmt("%5d ", he.num); + out1str(he.str); + } else { + const char *s = pat ? + fc_replace(he.str, pat, repl) : he.str; + + if (sflg) { + if (displayhist) { + out2str(s); + } + + evalstring(s, 0); + if (displayhist && hist) { + /* + * XXX what about recursive and + * relative histnums. + */ + history(hist, &he, H_ENTER, s); + } + } else + fputs(s, efp); + } + /* + * At end? (if we were to lose last, we'd sure be + * messed up). + */ + if (he.num == last) + break; + } + if (editor) { + char *editcmd; + + fclose(efp); + editcmd = stalloc(strlen(editor) + strlen(editfile) + 2); + sprintf(editcmd, "%s %s", editor, editfile); + /* XXX - should use no JC command */ + evalstring(editcmd, 0); + INTON; + readcmdfile(editfile); /* XXX - should read back - quick tst */ + unlink(editfile); + } + + if (lflg == 0 && active > 0) + --active; + if (displayhist) + displayhist = 0; + return 0; +} + +STATIC const char * +fc_replace(const char *s, char *p, char *r) +{ + char *dest; + int plen = strlen(p); + + STARTSTACKSTR(dest); + while (*s) { + if (*s == *p && strncmp(s, p, plen) == 0) { + while (*r) + STPUTC(*r++, dest); + s += plen; + *p = '\0'; /* so no more matches */ + } else + STPUTC(*s++, dest); + } + STACKSTRNUL(dest); + dest = grabstackstr(dest); + + return (dest); +} + +int +not_fcnumber(char *s) +{ + if (s == NULL) + return 0; + if (*s == '-') + s++; + return (!is_number(s)); +} + +int +str_to_event(const char *str, int last) +{ + HistEvent he; + const char *s = str; + int relative = 0; + int i, retval; + + retval = history(hist, &he, H_FIRST); + switch (*s) { + case '-': + relative = 1; + /*FALLTHROUGH*/ + case '+': + s++; + } + if (is_number(s)) { + i = atoi(s); + if (relative) { + while (retval != -1 && i--) { + retval = history(hist, &he, H_NEXT); + } + if (retval == -1) + retval = history(hist, &he, H_LAST); + } else { + retval = history(hist, &he, H_NEXT_EVENT, i); + if (retval == -1) { + /* + * the notion of first and last is + * backwards to that of the history package + */ + retval = history(hist, &he, + last ? H_FIRST : H_LAST); + } + } + if (retval == -1) + sh_error("history number %s not found (internal error)", + str); + } else { + /* + * pattern + */ + retval = history(hist, &he, H_PREV_STR, str); + if (retval == -1) + sh_error("history pattern not found: %s", str); + } + return (he.num); +} +#endif diff --git a/bin/dash/src/init.h b/bin/dash/src/init.h new file mode 100644 index 00000000..d56fb28e --- /dev/null +++ b/bin/dash/src/init.h @@ -0,0 +1,40 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)init.h 8.2 (Berkeley) 5/4/95 + */ + +void init(void); +void exitreset(void); +void forkreset(void); +void reset(void); diff --git a/bin/dash/src/input.c b/bin/dash/src/input.c new file mode 100644 index 00000000..4167bd18 --- /dev/null +++ b/bin/dash/src/input.c @@ -0,0 +1,498 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <stdio.h> /* defines BUFSIZ */ +#include <fcntl.h> +#include <unistd.h> +#include <stdlib.h> +#include <string.h> + +/* + * This file implements the input routines used by the parser. + */ + +#include "eval.h" +#include "shell.h" +#include "redir.h" +#include "syntax.h" +#include "input.h" +#include "output.h" +#include "options.h" +#include "memalloc.h" +#include "error.h" +#include "alias.h" +#include "parser.h" +#include "main.h" +#ifndef SMALL +#include "myhistedit.h" +#endif + +#define EOF_NLEFT -99 /* value of parsenleft when EOF pushed back */ +#define IBUFSIZ (BUFSIZ + 1) + + +MKINIT struct parsefile basepf; /* top level input file */ +MKINIT char basebuf[IBUFSIZ]; /* buffer for top level input file */ +struct parsefile *parsefile = &basepf; /* current input file */ +int whichprompt; /* 1 == PS1, 2 == PS2 */ + +STATIC void pushfile(void); +static int preadfd(void); +static void setinputfd(int fd, int push); +static int preadbuffer(void); + +#ifdef mkinit +INCLUDE <stdio.h> +INCLUDE <unistd.h> +INCLUDE "input.h" +INCLUDE "error.h" + +INIT { + basepf.nextc = basepf.buf = basebuf; + basepf.linno = 1; +} + +RESET { + /* clear input buffer */ + basepf.lleft = basepf.nleft = 0; + popallfiles(); +} + +FORKRESET { + popallfiles(); + if (parsefile->fd > 0) { + close(parsefile->fd); + parsefile->fd = 0; + } +} +#endif + + +/* + * Read a character from the script, returning PEOF on end of file. + * Nul characters in the input are silently discarded. + */ + +int +pgetc(void) +{ + int c; + + if (parsefile->unget) + return parsefile->lastc[--parsefile->unget]; + + if (--parsefile->nleft >= 0) + c = (signed char)*parsefile->nextc++; + else + c = preadbuffer(); + + parsefile->lastc[1] = parsefile->lastc[0]; + parsefile->lastc[0] = c; + + return c; +} + + +/* + * Same as pgetc(), but ignores PEOA. + */ + +int +pgetc2() +{ + int c; + do { + c = pgetc(); + } while (c == PEOA); + return c; +} + + +static int +preadfd(void) +{ + int nr; + char *buf = parsefile->buf; + parsefile->nextc = buf; + +retry: +#ifndef SMALL + if (parsefile->fd == 0 && el) { + static const char *rl_cp; + static int el_len; + + if (rl_cp == NULL) + rl_cp = el_gets(el, &el_len); + if (rl_cp == NULL) + nr = 0; + else { + nr = el_len; + if (nr > IBUFSIZ - 1) + nr = IBUFSIZ - 1; + memcpy(buf, rl_cp, nr); + if (nr != el_len) { + el_len -= nr; + rl_cp += nr; + } else + rl_cp = 0; + } + + } else +#endif + nr = read(parsefile->fd, buf, IBUFSIZ - 1); + + + if (nr < 0) { + if (errno == EINTR) + goto retry; + if (parsefile->fd == 0 && errno == EWOULDBLOCK) { + int flags = fcntl(0, F_GETFL, 0); + if (flags >= 0 && flags & O_NONBLOCK) { + flags &=~ O_NONBLOCK; + if (fcntl(0, F_SETFL, flags) >= 0) { + out2str("sh: turning off NDELAY mode\n"); + goto retry; + } + } + } + } + return nr; +} + +/* + * Refill the input buffer and return the next input character: + * + * 1) If a string was pushed back on the input, pop it; + * 2) If an EOF was pushed back (parsenleft == EOF_NLEFT) or we are reading + * from a string so we can't refill the buffer, return EOF. + * 3) If the is more stuff in this buffer, use it else call read to fill it. + * 4) Process input up to the next newline, deleting nul characters. + */ + +static int preadbuffer(void) +{ + char *q; + int more; +#ifndef SMALL + int something; +#endif + char savec; + + if (unlikely(parsefile->strpush)) { + if ( + parsefile->nleft == -1 && + parsefile->strpush->ap && + parsefile->nextc[-1] != ' ' && + parsefile->nextc[-1] != '\t' + ) { + return PEOA; + } + popstring(); + return pgetc(); + } + if (unlikely(parsefile->nleft == EOF_NLEFT || + parsefile->buf == NULL)) + return PEOF; + flushall(); + + more = parsefile->lleft; + if (more <= 0) { +again: + if ((more = preadfd()) <= 0) { + parsefile->lleft = parsefile->nleft = EOF_NLEFT; + return PEOF; + } + } + + q = parsefile->nextc; + + /* delete nul characters */ +#ifndef SMALL + something = 0; +#endif + for (;;) { + int c; + + more--; + c = *q; + + if (!c) + memmove(q, q + 1, more); + else { + q++; + + if (c == '\n') { + parsefile->nleft = q - parsefile->nextc - 1; + break; + } + +#ifndef SMALL + switch (c) { + default: + something = 1; + /* fall through */ + case '\t': + case ' ': + break; + } +#endif + } + + if (more <= 0) { + parsefile->nleft = q - parsefile->nextc - 1; + if (parsefile->nleft < 0) + goto again; + break; + } + } + parsefile->lleft = more; + + savec = *q; + *q = '\0'; + +#ifndef SMALL + if (parsefile->fd == 0 && hist && something) { + HistEvent he; + INTOFF; + history(hist, &he, whichprompt == 1? H_ENTER : H_APPEND, + parsefile->nextc); + INTON; + } +#endif + + if (vflag) { + out2str(parsefile->nextc); +#ifdef FLUSHERR + flushout(out2); +#endif + } + + *q = savec; + + return (signed char)*parsefile->nextc++; +} + +/* + * Undo a call to pgetc. Only two characters may be pushed back. + * PEOF may be pushed back. + */ + +void +pungetc(void) +{ + parsefile->unget++; +} + +/* + * Push a string back onto the input at this current parsefile level. + * We handle aliases this way. + */ +void +pushstring(char *s, void *ap) +{ + struct strpush *sp; + size_t len; + + len = strlen(s); + INTOFF; +/*dprintf("*** calling pushstring: %s, %d\n", s, len);*/ + if (parsefile->strpush) { + sp = ckmalloc(sizeof (struct strpush)); + sp->prev = parsefile->strpush; + parsefile->strpush = sp; + } else + sp = parsefile->strpush = &(parsefile->basestrpush); + sp->prevstring = parsefile->nextc; + sp->prevnleft = parsefile->nleft; + sp->unget = parsefile->unget; + memcpy(sp->lastc, parsefile->lastc, sizeof(sp->lastc)); + sp->ap = (struct alias *)ap; + if (ap) { + ((struct alias *)ap)->flag |= ALIASINUSE; + sp->string = s; + } + parsefile->nextc = s; + parsefile->nleft = len; + parsefile->unget = 0; + INTON; +} + +void +popstring(void) +{ + struct strpush *sp = parsefile->strpush; + + INTOFF; + if (sp->ap) { + if (parsefile->nextc[-1] == ' ' || + parsefile->nextc[-1] == '\t') { + checkkwd |= CHKALIAS; + } + if (sp->string != sp->ap->val) { + ckfree(sp->string); + } + sp->ap->flag &= ~ALIASINUSE; + if (sp->ap->flag & ALIASDEAD) { + unalias(sp->ap->name); + } + } + parsefile->nextc = sp->prevstring; + parsefile->nleft = sp->prevnleft; + parsefile->unget = sp->unget; + memcpy(parsefile->lastc, sp->lastc, sizeof(sp->lastc)); +/*dprintf("*** calling popstring: restoring to '%s'\n", parsenextc);*/ + parsefile->strpush = sp->prev; + if (sp != &(parsefile->basestrpush)) + ckfree(sp); + INTON; +} + +/* + * Set the input to take input from a file. If push is set, push the + * old input onto the stack first. + */ + +int +setinputfile(const char *fname, int flags) +{ + int fd; + + INTOFF; + if ((fd = open64(fname, O_RDONLY)) < 0) { + if (flags & INPUT_NOFILE_OK) + goto out; + exitstatus = 127; + exerror(EXERROR, "Can't open %s", fname); + } + if (fd < 10) + fd = savefd(fd, fd); + setinputfd(fd, flags & INPUT_PUSH_FILE); +out: + INTON; + return fd; +} + + +/* + * Like setinputfile, but takes an open file descriptor. Call this with + * interrupts off. + */ + +static void +setinputfd(int fd, int push) +{ + if (push) { + pushfile(); + parsefile->buf = 0; + } + parsefile->fd = fd; + if (parsefile->buf == NULL) + parsefile->buf = ckmalloc(IBUFSIZ); + parsefile->lleft = parsefile->nleft = 0; + plinno = 1; +} + + +/* + * Like setinputfile, but takes input from a string. + */ + +void +setinputstring(char *string) +{ + INTOFF; + pushfile(); + parsefile->nextc = string; + parsefile->nleft = strlen(string); + parsefile->buf = NULL; + plinno = 1; + INTON; +} + + + +/* + * To handle the "." command, a stack of input files is used. Pushfile + * adds a new entry to the stack and popfile restores the previous level. + */ + +STATIC void +pushfile(void) +{ + struct parsefile *pf; + + pf = (struct parsefile *)ckmalloc(sizeof (struct parsefile)); + pf->prev = parsefile; + pf->fd = -1; + pf->strpush = NULL; + pf->basestrpush.prev = NULL; + pf->unget = 0; + parsefile = pf; +} + + +void +popfile(void) +{ + struct parsefile *pf = parsefile; + + INTOFF; + if (pf->fd >= 0) + close(pf->fd); + if (pf->buf) + ckfree(pf->buf); + while (pf->strpush) + popstring(); + parsefile = pf->prev; + ckfree(pf); + INTON; +} + + +void unwindfiles(struct parsefile *stop) +{ + while (parsefile != stop) + popfile(); +} + + +/* + * Return to top level. + */ + +void +popallfiles(void) +{ + unwindfiles(&basepf); +} diff --git a/bin/dash/src/input.h b/bin/dash/src/input.h new file mode 100644 index 00000000..8acc6e9f --- /dev/null +++ b/bin/dash/src/input.h @@ -0,0 +1,101 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)input.h 8.2 (Berkeley) 5/4/95 + */ + +/* PEOF (the end of file marker) is defined in syntax.h */ + +enum { + INPUT_PUSH_FILE = 1, + INPUT_NOFILE_OK = 2, +}; + +struct alias; + +struct strpush { + struct strpush *prev; /* preceding string on stack */ + char *prevstring; + int prevnleft; + struct alias *ap; /* if push was associated with an alias */ + char *string; /* remember the string since it may change */ + + /* Remember last two characters for pungetc. */ + int lastc[2]; + + /* Number of outstanding calls to pungetc. */ + int unget; +}; + +/* + * The parsefile structure pointed to by the global variable parsefile + * contains information about the current file being read. + */ + +struct parsefile { + struct parsefile *prev; /* preceding file on stack */ + int linno; /* current line */ + int fd; /* file descriptor (or -1 if string) */ + int nleft; /* number of chars left in this line */ + int lleft; /* number of chars left in this buffer */ + char *nextc; /* next char in buffer */ + char *buf; /* input buffer */ + struct strpush *strpush; /* for pushing strings at this level */ + struct strpush basestrpush; /* so pushing one is fast */ + + /* Remember last two characters for pungetc. */ + int lastc[2]; + + /* Number of outstanding calls to pungetc. */ + int unget; +}; + +extern struct parsefile *parsefile; + +/* + * The input line number. Input.c just defines this variable, and saves + * and restores it when files are pushed and popped. The user of this + * package must set its value. + */ +#define plinno (parsefile->linno) + +int pgetc(void); +int pgetc2(void); +void pungetc(void); +void pushstring(char *, void *); +void popstring(void); +int setinputfile(const char *, int); +void setinputstring(char *); +void popfile(void); +void unwindfiles(struct parsefile *); +void popallfiles(void); diff --git a/bin/dash/src/jobs.c b/bin/dash/src/jobs.c new file mode 100644 index 00000000..d4c13c0f --- /dev/null +++ b/bin/dash/src/jobs.c @@ -0,0 +1,1545 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <fcntl.h> +#include <signal.h> +#include <unistd.h> +#include <stdlib.h> +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif +#include <sys/types.h> +#include <sys/param.h> +#ifdef BSD +#include <sys/wait.h> +#include <sys/time.h> +#include <sys/resource.h> +#endif +#include <sys/ioctl.h> + +#include "shell.h" +#if JOBS +#include <termios.h> +#undef CEOF /* syntax.h redefines this */ +#endif +#include "exec.h" +#include "eval.h" +#include "init.h" +#include "redir.h" +#include "show.h" +#include "main.h" +#include "parser.h" +#include "nodes.h" +#include "jobs.h" +#include "options.h" +#include "trap.h" +#include "syntax.h" +#include "input.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "mystring.h" +#include "system.h" + +/* mode flags for set_curjob */ +#define CUR_DELETE 2 +#define CUR_RUNNING 1 +#define CUR_STOPPED 0 + +/* mode flags for dowait */ +#define DOWAIT_NONBLOCK 0 +#define DOWAIT_BLOCK 1 +#define DOWAIT_WAITCMD 2 + +/* array of jobs */ +static struct job *jobtab; +/* size of array */ +static unsigned njobs; +/* pid of last background process */ +pid_t backgndpid; + +#if JOBS +/* pgrp of shell on invocation */ +static int initialpgrp; +/* control terminal */ +static int ttyfd = -1; +#endif + +/* current job */ +static struct job *curjob; + +/* Set if we are in the vforked child */ +int vforked; + +STATIC void set_curjob(struct job *, unsigned); +STATIC int jobno(const struct job *); +STATIC int sprint_status(char *, int, int); +STATIC void freejob(struct job *); +STATIC struct job *getjob(const char *, int); +STATIC struct job *growjobtab(void); +STATIC void forkchild(struct job *, union node *, int); +STATIC void forkparent(struct job *, union node *, int, pid_t); +STATIC int dowait(int, struct job *); +#ifdef SYSV +STATIC int onsigchild(void); +#endif +STATIC int waitproc(int, int *); +STATIC char *commandtext(union node *); +STATIC void cmdtxt(union node *); +STATIC void cmdlist(union node *, int); +STATIC void cmdputs(const char *); +STATIC void showpipe(struct job *, struct output *); +STATIC int getstatus(struct job *); + +#if JOBS +static int restartjob(struct job *, int); +static void xtcsetpgrp(int, pid_t); +#endif + +STATIC void +set_curjob(struct job *jp, unsigned mode) +{ + struct job *jp1; + struct job **jpp, **curp; + + /* first remove from list */ + jpp = curp = &curjob; + do { + jp1 = *jpp; + if (jp1 == jp) + break; + jpp = &jp1->prev_job; + } while (1); + *jpp = jp1->prev_job; + + /* Then re-insert in correct position */ + jpp = curp; + switch (mode) { + default: +#ifdef DEBUG + abort(); +#endif + case CUR_DELETE: + /* job being deleted */ + break; + case CUR_RUNNING: + /* newly created job or backgrounded job, + put after all stopped jobs. */ + do { + jp1 = *jpp; + if (!JOBS || !jp1 || jp1->state != JOBSTOPPED) + break; + jpp = &jp1->prev_job; + } while (1); + /* FALLTHROUGH */ +#if JOBS + case CUR_STOPPED: +#endif + /* newly stopped job - becomes curjob */ + jp->prev_job = *jpp; + *jpp = jp; + break; + } +} + +#if JOBS +/* + * Turn job control on and off. + * + * Note: This code assumes that the third arg to ioctl is a character + * pointer, which is true on Berkeley systems but not System V. Since + * System V doesn't have job control yet, this isn't a problem now. + * + * Called with interrupts off. + */ + +int jobctl; + +void +setjobctl(int on) +{ + int fd; + int pgrp; + + if (on == jobctl || rootshell == 0) + return; + if (on) { + int ofd; + ofd = fd = open64(_PATH_TTY, O_RDWR); + if (fd < 0) { + fd += 3; + while (!isatty(fd)) + if (--fd < 0) + goto out; + } + fd = savefd(fd, ofd); + do { /* while we are in the background */ + if ((pgrp = tcgetpgrp(fd)) < 0) { +out: + sh_warnx("can't access tty; job control turned off"); + mflag = on = 0; + goto close; + } + if (pgrp == getpgrp()) + break; + killpg(0, SIGTTIN); + } while (1); + initialpgrp = pgrp; + + setsignal(SIGTSTP); + setsignal(SIGTTOU); + setsignal(SIGTTIN); + pgrp = rootpid; + setpgid(0, pgrp); + xtcsetpgrp(fd, pgrp); + } else { + /* turning job control off */ + fd = ttyfd; + pgrp = initialpgrp; + xtcsetpgrp(fd, pgrp); + setpgid(0, pgrp); + setsignal(SIGTSTP); + setsignal(SIGTTOU); + setsignal(SIGTTIN); +close: + close(fd); + fd = -1; + } + ttyfd = fd; + jobctl = on; +} +#endif + + +int +killcmd(argc, argv) + int argc; + char **argv; +{ + extern char *signal_names[]; + int signo = -1; + int list = 0; + int i; + pid_t pid; + struct job *jp; + + if (argc <= 1) { +usage: + sh_error( +"Usage: kill [-s sigspec | -signum | -sigspec] [pid | job]... or\n" +"kill -l [exitstatus]" + ); + } + + if (**++argv == '-') { + signo = decode_signal(*argv + 1, 1); + if (signo < 0) { + int c; + + while ((c = nextopt("ls:")) != '\0') + switch (c) { + default: +#ifdef DEBUG + abort(); +#endif + case 'l': + list = 1; + break; + case 's': + signo = decode_signal(optionarg, 1); + if (signo < 0) { + sh_error( + "invalid signal number or name: %s", + optionarg + ); + } + break; + } + argv = argptr; + } else + argv++; + } + + if (!list && signo < 0) + signo = SIGTERM; + + if ((signo < 0 || !*argv) ^ list) { + goto usage; + } + + if (list) { + struct output *out; + + out = out1; + if (!*argv) { + outstr("0\n", out); + for (i = 1; i < NSIG; i++) { + outfmt(out, snlfmt, signal_names[i]); + } + return 0; + } + signo = number(*argv); + if (signo > 128) + signo -= 128; + if (0 < signo && signo < NSIG) + outfmt(out, snlfmt, signal_names[signo]); + else + sh_error("invalid signal number or exit status: %s", + *argv); + return 0; + } + + i = 0; + do { + if (**argv == '%') { + jp = getjob(*argv, 0); + pid = -jp->ps[0].pid; + } else + pid = **argv == '-' ? + -number(*argv + 1) : number(*argv); + if (kill(pid, signo) != 0) { + sh_warnx("%s\n", strerror(errno)); + i = 1; + } + } while (*++argv); + + return i; +} + +STATIC int +jobno(const struct job *jp) +{ + return jp - jobtab + 1; +} + +#if JOBS +int +fgcmd(int argc, char **argv) +{ + struct job *jp; + struct output *out; + int mode; + int retval; + + mode = (**argv == 'f') ? FORK_FG : FORK_BG; + nextopt(nullstr); + argv = argptr; + out = out1; + do { + jp = getjob(*argv, 1); + if (mode == FORK_BG) { + set_curjob(jp, CUR_RUNNING); + outfmt(out, "[%d] ", jobno(jp)); + } + outstr(jp->ps->cmd, out); + showpipe(jp, out); + retval = restartjob(jp, mode); + } while (*argv && *++argv); + return retval; +} + +int bgcmd(int argc, char **argv) +#ifdef HAVE_ALIAS_ATTRIBUTE + __attribute__((__alias__("fgcmd"))); +#else +{ + return fgcmd(argc, argv); +} +#endif + + +STATIC int +restartjob(struct job *jp, int mode) +{ + struct procstat *ps; + int i; + int status; + pid_t pgid; + + INTOFF; + if (jp->state == JOBDONE) + goto out; + jp->state = JOBRUNNING; + pgid = jp->ps->pid; + if (mode == FORK_FG) + xtcsetpgrp(ttyfd, pgid); + killpg(pgid, SIGCONT); + ps = jp->ps; + i = jp->nprocs; + do { + if (WIFSTOPPED(ps->status)) { + ps->status = -1; + } + } while (ps++, --i); +out: + status = (mode == FORK_FG) ? waitforjob(jp) : 0; + INTON; + return status; +} +#endif + +STATIC int +sprint_status(char *os, int status, int sigonly) +{ + char *s = os; + int st; + + st = WEXITSTATUS(status); + if (!WIFEXITED(status)) { +#if JOBS + st = WSTOPSIG(status); + if (!WIFSTOPPED(status)) +#endif + st = WTERMSIG(status); + if (sigonly) { + if (st == SIGINT || st == SIGPIPE) + goto out; +#if JOBS + if (WIFSTOPPED(status)) + goto out; +#endif + } + s = stpncpy(s, strsignal(st), 32); +#ifdef WCOREDUMP + if (WCOREDUMP(status)) { + s = stpcpy(s, " (core dumped)"); + } +#endif + } else if (!sigonly) { + if (st) + s += fmtstr(s, 16, "Done(%d)", st); + else + s = stpcpy(s, "Done"); + } + +out: + return s - os; +} + +static void +showjob(struct output *out, struct job *jp, int mode) +{ + struct procstat *ps; + struct procstat *psend; + int col; + int indent; + char s[80]; + + ps = jp->ps; + + if (mode & SHOW_PGID) { + /* just output process (group) id of pipeline */ + outfmt(out, "%d\n", ps->pid); + return; + } + + col = fmtstr(s, 16, "[%d] ", jobno(jp)); + indent = col; + + if (jp == curjob) + s[col - 2] = '+'; + else if (curjob && jp == curjob->prev_job) + s[col - 2] = '-'; + + if (mode & SHOW_PID) + col += fmtstr(s + col, 16, "%d ", ps->pid); + + psend = ps + jp->nprocs; + + if (jp->state == JOBRUNNING) { + scopy("Running", s + col); + col += strlen("Running"); + } else { + int status = psend[-1].status; +#if JOBS + if (jp->state == JOBSTOPPED) + status = jp->stopstatus; +#endif + col += sprint_status(s + col, status, 0); + } + + goto start; + + do { + /* for each process */ + col = fmtstr(s, 48, " |\n%*c%d ", indent, ' ', ps->pid) - 3; + +start: + outfmt( + out, "%s%*c%s", + s, 33 - col >= 0 ? 33 - col : 0, ' ', ps->cmd + ); + if (!(mode & SHOW_PID)) { + showpipe(jp, out); + break; + } + if (++ps == psend) { + outcslow('\n', out); + break; + } + } while (1); + + jp->changed = 0; + + if (jp->state == JOBDONE) { + TRACE(("showjob: freeing job %d\n", jobno(jp))); + freejob(jp); + } +} + + +int +jobscmd(int argc, char **argv) +{ + int mode, m; + struct output *out; + + mode = 0; + while ((m = nextopt("lp"))) + if (m == 'l') + mode = SHOW_PID; + else + mode = SHOW_PGID; + + out = out1; + argv = argptr; + if (*argv) + do + showjob(out, getjob(*argv,0), mode); + while (*++argv); + else + showjobs(out, mode); + + return 0; +} + + +/* + * Print a list of jobs. If "change" is nonzero, only print jobs whose + * statuses have changed since the last call to showjobs. + */ + +void +showjobs(struct output *out, int mode) +{ + struct job *jp; + + TRACE(("showjobs(%x) called\n", mode)); + + /* If not even one job changed, there is nothing to do */ + dowait(DOWAIT_NONBLOCK, NULL); + + for (jp = curjob; jp; jp = jp->prev_job) { + if (!(mode & SHOW_CHANGED) || jp->changed) + showjob(out, jp, mode); + } +} + +/* + * Mark a job structure as unused. + */ + +STATIC void +freejob(struct job *jp) +{ + struct procstat *ps; + int i; + + INTOFF; + for (i = jp->nprocs, ps = jp->ps ; --i >= 0 ; ps++) { + if (ps->cmd != nullstr) + ckfree(ps->cmd); + } + if (jp->ps != &jp->ps0) + ckfree(jp->ps); + jp->used = 0; + set_curjob(jp, CUR_DELETE); + INTON; +} + + + +int +waitcmd(int argc, char **argv) +{ + struct job *job; + int retval; + struct job *jp; + + nextopt(nullstr); + retval = 0; + + argv = argptr; + if (!*argv) { + /* wait for all jobs */ + for (;;) { + jp = curjob; + while (1) { + if (!jp) { + /* no running procs */ + goto out; + } + if (jp->state == JOBRUNNING) + break; + jp->waited = 1; + jp = jp->prev_job; + } + if (!dowait(DOWAIT_WAITCMD, 0)) + goto sigout; + } + } + + retval = 127; + do { + if (**argv != '%') { + pid_t pid = number(*argv); + job = curjob; + goto start; + do { + if (job->ps[job->nprocs - 1].pid == pid) + break; + job = job->prev_job; +start: + if (!job) + goto repeat; + } while (1); + } else + job = getjob(*argv, 0); + /* loop until process terminated or stopped */ + if (!dowait(DOWAIT_WAITCMD, job)) + goto sigout; + job->waited = 1; + retval = getstatus(job); +repeat: + ; + } while (*++argv); + +out: + return retval; + +sigout: + retval = 128 + pending_sig; + goto out; +} + + + +/* + * Convert a job name to a job structure. + */ + +STATIC struct job * +getjob(const char *name, int getctl) +{ + struct job *jp; + struct job *found; + const char *err_msg = "No such job: %s"; + unsigned num; + int c; + const char *p; + char *(*match)(const char *, const char *); + + jp = curjob; + p = name; + if (!p) + goto currentjob; + + if (*p != '%') + goto err; + + c = *++p; + if (!c) + goto currentjob; + + if (!p[1]) { + if (c == '+' || c == '%') { +currentjob: + err_msg = "No current job"; + goto check; + } else if (c == '-') { + if (jp) + jp = jp->prev_job; + err_msg = "No previous job"; +check: + if (!jp) + goto err; + goto gotit; + } + } + + if (is_number(p)) { + num = atoi(p); + if (num > 0 && num <= njobs) { + jp = jobtab + num - 1; + if (jp->used) + goto gotit; + goto err; + } + } + + match = prefix; + if (*p == '?') { + match = strstr; + p++; + } + + found = 0; + while (jp) { + if (match(jp->ps[0].cmd, p)) { + if (found) + goto err; + found = jp; + err_msg = "%s: ambiguous"; + } + jp = jp->prev_job; + } + + if (!found) + goto err; + jp = found; + +gotit: +#if JOBS + err_msg = "job %s not created under job control"; + if (getctl && jp->jobctl == 0) + goto err; +#endif + return jp; +err: + sh_error(err_msg, name); +} + + + +/* + * Return a new job structure. + * Called with interrupts off. + */ + +struct job * +makejob(union node *node, int nprocs) +{ + int i; + struct job *jp; + + for (i = njobs, jp = jobtab ; ; jp++) { + if (--i < 0) { + jp = growjobtab(); + break; + } + if (jp->used == 0) + break; + if (jp->state != JOBDONE || !jp->waited) + continue; + if (jobctl) + continue; + freejob(jp); + break; + } + memset(jp, 0, sizeof(*jp)); +#if JOBS + if (jobctl) + jp->jobctl = 1; +#endif + jp->prev_job = curjob; + curjob = jp; + jp->used = 1; + jp->ps = &jp->ps0; + if (nprocs > 1) { + jp->ps = ckmalloc(nprocs * sizeof (struct procstat)); + } + TRACE(("makejob(0x%lx, %d) returns %%%d\n", (long)node, nprocs, + jobno(jp))); + return jp; +} + +STATIC struct job * +growjobtab(void) +{ + size_t len; + ptrdiff_t offset; + struct job *jp, *jq; + + len = njobs * sizeof(*jp); + jq = jobtab; + jp = ckrealloc(jq, len + 4 * sizeof(*jp)); + + offset = (char *)jp - (char *)jq; + if (offset) { + /* Relocate pointers */ + size_t l = len; + + jq = (struct job *)((char *)jq + l); + while (l) { + l -= sizeof(*jp); + jq--; +#define joff(p) ((struct job *)((char *)(p) + l)) +#define jmove(p) (p) = (void *)((char *)(p) + offset) + if (likely(joff(jp)->ps == &jq->ps0)) + jmove(joff(jp)->ps); + if (joff(jp)->prev_job) + jmove(joff(jp)->prev_job); + } + if (curjob) + jmove(curjob); +#undef joff +#undef jmove + } + + njobs += 4; + jobtab = jp; + jp = (struct job *)((char *)jp + len); + jq = jp + 3; + do { + jq->used = 0; + } while (--jq >= jp); + return jp; +} + + +/* + * Fork off a subshell. If we are doing job control, give the subshell its + * own process group. Jp is a job structure that the job is to be added to. + * N is the command that will be evaluated by the child. Both jp and n may + * be NULL. The mode parameter can be one of the following: + * FORK_FG - Fork off a foreground process. + * FORK_BG - Fork off a background process. + * FORK_NOJOB - Like FORK_FG, but don't give the process its own + * process group even if job control is on. + * + * When job control is turned off, background processes have their standard + * input redirected to /dev/null (except for the second and later processes + * in a pipeline). + * + * Called with interrupts off. + */ + +static void forkchild(struct job *jp, union node *n, int mode) +{ + int lvforked; + int oldlvl; + + TRACE(("Child shell %d\n", getpid())); + + oldlvl = shlvl; + lvforked = vforked; + + if (!lvforked) { + shlvl++; + + forkreset(); + +#if JOBS + /* do job control only in root shell */ + jobctl = 0; +#endif + } + +#if JOBS + if (mode != FORK_NOJOB && jp->jobctl && !oldlvl) { + pid_t pgrp; + + if (jp->nprocs == 0) + pgrp = getpid(); + else + pgrp = jp->ps[0].pid; + /* This can fail because we are doing it in the parent also */ + (void)setpgid(0, pgrp); + if (mode == FORK_FG) + xtcsetpgrp(ttyfd, pgrp); + setsignal(SIGTSTP); + setsignal(SIGTTOU); + } else +#endif + if (mode == FORK_BG) { + ignoresig(SIGINT); + ignoresig(SIGQUIT); + if (jp->nprocs == 0) { + close(0); + if (open64(_PATH_DEVNULL, O_RDONLY) != 0) + sh_error("Can't open %s", _PATH_DEVNULL); + } + } + if (!oldlvl && iflag) { + if (mode != FORK_BG) { + setsignal(SIGINT); + setsignal(SIGQUIT); + } + setsignal(SIGTERM); + } + + if (lvforked) + return; + + for (jp = curjob; jp; jp = jp->prev_job) + freejob(jp); +} + +static void forkparent(struct job *jp, union node *n, int mode, pid_t pid) +{ + if (pid < 0) { + TRACE(("Fork failed, errno=%d", errno)); + if (jp) + freejob(jp); + sh_error("Cannot fork"); + /* NOTREACHED */ + } + + TRACE(("In parent shell: child = %d\n", pid)); + if (!jp) + return; +#if JOBS + if (mode != FORK_NOJOB && jp->jobctl) { + int pgrp; + + if (jp->nprocs == 0) + pgrp = pid; + else + pgrp = jp->ps[0].pid; + /* This can fail because we are doing it in the child also */ + (void)setpgid(pid, pgrp); + } +#endif + if (mode == FORK_BG) { + backgndpid = pid; /* set $! */ + set_curjob(jp, CUR_RUNNING); + } + if (jp) { + struct procstat *ps = &jp->ps[jp->nprocs++]; + ps->pid = pid; + ps->status = -1; + ps->cmd = nullstr; + if (jobctl && n) + ps->cmd = commandtext(n); + } +} + +int +forkshell(struct job *jp, union node *n, int mode) +{ + int pid; + + TRACE(("forkshell(%%%d, %p, %d) called\n", jobno(jp), n, mode)); + pid = fork(); + if (pid == 0) + forkchild(jp, n, mode); + else + forkparent(jp, n, mode, pid); + + return pid; +} + +struct job *vforkexec(union node *n, char **argv, const char *path, int idx) +{ + struct job *jp; + int pid; + + jp = makejob(n, 1); + + sigblockall(NULL); + vforked++; + + pid = vfork(); + + if (!pid) { + forkchild(jp, n, FORK_FG); + sigclearmask(); + shellexec(argv, path, idx); + /* NOTREACHED */ + } + + vforked = 0; + sigclearmask(); + forkparent(jp, n, FORK_FG, pid); + + return jp; +} + +/* + * Wait for job to finish. + * + * Under job control we have the problem that while a child process is + * running interrupts generated by the user are sent to the child but not + * to the shell. This means that an infinite loop started by an inter- + * active user may be hard to kill. With job control turned off, an + * interactive user may place an interactive program inside a loop. If + * the interactive program catches interrupts, the user doesn't want + * these interrupts to also abort the loop. The approach we take here + * is to have the shell ignore interrupt signals while waiting for a + * forground process to terminate, and then send itself an interrupt + * signal if the child process was terminated by an interrupt signal. + * Unfortunately, some programs want to do a bit of cleanup and then + * exit on interrupt; unless these processes terminate themselves by + * sending a signal to themselves (instead of calling exit) they will + * confuse this approach. + * + * Called with interrupts off. + */ + +int +waitforjob(struct job *jp) +{ + int st; + + TRACE(("waitforjob(%%%d) called\n", jp ? jobno(jp) : 0)); + dowait(jp ? DOWAIT_BLOCK : DOWAIT_NONBLOCK, jp); + if (!jp) + return exitstatus; + + st = getstatus(jp); +#if JOBS + if (jp->jobctl) { + xtcsetpgrp(ttyfd, rootpid); + /* + * This is truly gross. + * If we're doing job control, then we did a TIOCSPGRP which + * caused us (the shell) to no longer be in the controlling + * session -- so we wouldn't have seen any ^C/SIGINT. So, we + * intuit from the subprocess exit status whether a SIGINT + * occurred, and if so interrupt ourselves. Yuck. - mycroft + */ + if (jp->sigint) + raise(SIGINT); + } +#endif + if (! JOBS || jp->state == JOBDONE) + freejob(jp); + return st; +} + + + +/* + * Wait for a process to terminate. + */ + +static int waitone(int block, struct job *job) +{ + int pid; + int status; + struct job *jp; + struct job *thisjob = NULL; + int state; + + INTOFF; + TRACE(("dowait(%d) called\n", block)); + pid = waitproc(block, &status); + TRACE(("wait returns pid %d, status=%d\n", pid, status)); + if (pid <= 0) + goto out; + + for (jp = curjob; jp; jp = jp->prev_job) { + struct procstat *sp; + struct procstat *spend; + if (jp->state == JOBDONE) + continue; + state = JOBDONE; + spend = jp->ps + jp->nprocs; + sp = jp->ps; + do { + if (sp->pid == pid) { + TRACE(("Job %d: changing status of proc %d from 0x%x to 0x%x\n", jobno(jp), pid, sp->status, status)); + sp->status = status; + thisjob = jp; + } + if (sp->status == -1) + state = JOBRUNNING; +#if JOBS + if (state == JOBRUNNING) + continue; + if (WIFSTOPPED(sp->status)) { + jp->stopstatus = sp->status; + state = JOBSTOPPED; + } +#endif + } while (++sp < spend); + if (thisjob) + goto gotjob; + } + goto out; + +gotjob: + if (state != JOBRUNNING) { + thisjob->changed = 1; + + if (thisjob->state != state) { + TRACE(("Job %d: changing state from %d to %d\n", jobno(thisjob), thisjob->state, state)); + thisjob->state = state; +#if JOBS + if (state == JOBSTOPPED) { + set_curjob(thisjob, CUR_STOPPED); + } +#endif + } + } + +out: + INTON; + + if (thisjob && thisjob == job) { + char s[48 + 1]; + int len; + + len = sprint_status(s, status, 1); + if (len) { + s[len] = '\n'; + s[len + 1] = 0; + outstr(s, out2); + } + } + return pid; +} + +static int dowait(int block, struct job *jp) +{ + int gotchld = *(volatile int *)&gotsigchld; + int rpid; + int pid; + + if (jp && jp->state != JOBRUNNING) + block = DOWAIT_NONBLOCK; + + if (block == DOWAIT_NONBLOCK && !gotchld) + return 1; + + rpid = 1; + + do { + pid = waitone(block, jp); + rpid &= !!pid; + + if (!pid || (jp && jp->state != JOBRUNNING)) + block = DOWAIT_NONBLOCK; + } while (pid >= 0); + + return rpid; +} + +/* + * Do a wait system call. If block is zero, we return -1 rather than + * blocking. If block is DOWAIT_WAITCMD, we return 0 when a signal + * other than SIGCHLD interrupted the wait. + * + * We use sigsuspend in conjunction with a non-blocking wait3 in + * order to ensure that waitcmd exits promptly upon the reception + * of a signal. + * + * For code paths other than waitcmd we either use a blocking wait3 + * or a non-blocking wait3. For the latter case the caller of dowait + * must ensure that it is called over and over again until all dead + * children have been reaped. Otherwise zombies may linger. + */ + + +STATIC int +waitproc(int block, int *status) +{ + sigset_t oldmask; + int flags = block == DOWAIT_BLOCK ? 0 : WNOHANG; + int err; + +#if JOBS + if (jobctl) + flags |= WUNTRACED; +#endif + + do { + gotsigchld = 0; + do + err = wait3(status, flags, NULL); + while (err < 0 && errno == EINTR); + + if (err || (err = -!block)) + break; + + sigblockall(&oldmask); + + while (!gotsigchld && !pending_sig) + sigsuspend(&oldmask); + + sigclearmask(); + } while (gotsigchld); + + return err; +} + +/* + * return 1 if there are stopped jobs, otherwise 0 + */ +int job_warning; +int +stoppedjobs(void) +{ + struct job *jp; + int retval; + + retval = 0; + if (job_warning) + goto out; + jp = curjob; + if (jp && jp->state == JOBSTOPPED) { + out2str("You have stopped jobs.\n"); + job_warning = 2; + retval++; + } + +out: + return retval; +} + +/* + * Return a string identifying a command (to be printed by the + * jobs command). + */ + +STATIC char *cmdnextc; + +STATIC char * +commandtext(union node *n) +{ + char *name; + + STARTSTACKSTR(cmdnextc); + cmdtxt(n); + name = stackblock(); + TRACE(("commandtext: name %p, end %p\n", name, cmdnextc)); + return savestr(name); +} + + +STATIC void +cmdtxt(union node *n) +{ + union node *np; + struct nodelist *lp; + const char *p; + char s[2]; + + if (!n) + return; + switch (n->type) { + default: +#if DEBUG + abort(); +#endif + case NPIPE: + lp = n->npipe.cmdlist; + for (;;) { + cmdtxt(lp->n); + lp = lp->next; + if (!lp) + break; + cmdputs(" | "); + } + break; + case NSEMI: + p = "; "; + goto binop; + case NAND: + p = " && "; + goto binop; + case NOR: + p = " || "; +binop: + cmdtxt(n->nbinary.ch1); + cmdputs(p); + n = n->nbinary.ch2; + goto donode; + case NREDIR: + case NBACKGND: + n = n->nredir.n; + goto donode; + case NNOT: + cmdputs("!"); + n = n->nnot.com; +donode: + cmdtxt(n); + break; + case NIF: + cmdputs("if "); + cmdtxt(n->nif.test); + cmdputs("; then "); + if (n->nif.elsepart) { + cmdtxt(n->nif.ifpart); + cmdputs("; else "); + n = n->nif.elsepart; + } else { + n = n->nif.ifpart; + } + p = "; fi"; + goto dotail; + case NSUBSHELL: + cmdputs("("); + n = n->nredir.n; + p = ")"; + goto dotail; + case NWHILE: + p = "while "; + goto until; + case NUNTIL: + p = "until "; +until: + cmdputs(p); + cmdtxt(n->nbinary.ch1); + n = n->nbinary.ch2; + p = "; done"; +dodo: + cmdputs("; do "); +dotail: + cmdtxt(n); + goto dotail2; + case NFOR: + cmdputs("for "); + cmdputs(n->nfor.var); + cmdputs(" in "); + cmdlist(n->nfor.args, 1); + n = n->nfor.body; + p = "; done"; + goto dodo; + case NDEFUN: + cmdputs(n->ndefun.text); + p = "() { ... }"; + goto dotail2; + case NCMD: + cmdlist(n->ncmd.args, 1); + cmdlist(n->ncmd.redirect, 0); + break; + case NARG: + p = n->narg.text; +dotail2: + cmdputs(p); + break; + case NHERE: + case NXHERE: + p = "<<..."; + goto dotail2; + case NCASE: + cmdputs("case "); + cmdputs(n->ncase.expr->narg.text); + cmdputs(" in "); + for (np = n->ncase.cases; np; np = np->nclist.next) { + cmdtxt(np->nclist.pattern); + cmdputs(") "); + cmdtxt(np->nclist.body); + cmdputs(";; "); + } + p = "esac"; + goto dotail2; + case NTO: + p = ">"; + goto redir; + case NCLOBBER: + p = ">|"; + goto redir; + case NAPPEND: + p = ">>"; + goto redir; + case NTOFD: + p = ">&"; + goto redir; + case NFROM: + p = "<"; + goto redir; + case NFROMFD: + p = "<&"; + goto redir; + case NFROMTO: + p = "<>"; +redir: + s[0] = n->nfile.fd + '0'; + s[1] = '\0'; + cmdputs(s); + cmdputs(p); + if (n->type == NTOFD || n->type == NFROMFD) { + s[0] = n->ndup.dupfd + '0'; + p = s; + goto dotail2; + } else { + n = n->nfile.fname; + goto donode; + } + } +} + +STATIC void +cmdlist(union node *np, int sep) +{ + for (; np; np = np->narg.next) { + if (!sep) + cmdputs(spcstr); + cmdtxt(np); + if (sep && np->narg.next) + cmdputs(spcstr); + } +} + + +STATIC void +cmdputs(const char *s) +{ + const char *p, *str; + char cc[2] = " "; + char *nextc; + signed char c; + int subtype = 0; + int quoted = 0; + static const char vstype[VSTYPE + 1][4] = { + "", "}", "-", "+", "?", "=", + "%", "%%", "#", "##", + }; + + nextc = makestrspace((strlen(s) + 1) * 8, cmdnextc); + p = s; + while ((c = *p++) != 0) { + str = 0; + switch (c) { + case CTLESC: + c = *p++; + break; + case CTLVAR: + subtype = *p++; + if ((subtype & VSTYPE) == VSLENGTH) + str = "${#"; + else + str = "${"; + goto dostr; + case CTLENDVAR: + str = "\"}"; + str += !(quoted & 1); + quoted >>= 1; + subtype = 0; + goto dostr; + case CTLBACKQ: + str = "$(...)"; + goto dostr; + case CTLARI: + str = "$(("; + goto dostr; + case CTLENDARI: + str = "))"; + goto dostr; + case CTLQUOTEMARK: + quoted ^= 1; + c = '"'; + break; + case '=': + if (subtype == 0) + break; + if ((subtype & VSTYPE) != VSNORMAL) + quoted <<= 1; + str = vstype[subtype & VSTYPE]; + if (subtype & VSNUL) + c = ':'; + else + goto checkstr; + break; + case '\'': + case '\\': + case '"': + case '$': + /* These can only happen inside quotes */ + cc[0] = c; + str = cc; + c = '\\'; + break; + default: + break; + } + USTPUTC(c, nextc); +checkstr: + if (!str) + continue; +dostr: + while ((c = *str++)) { + USTPUTC(c, nextc); + } + } + if (quoted & 1) { + USTPUTC('"', nextc); + } + *nextc = 0; + cmdnextc = nextc; +} + + +STATIC void +showpipe(struct job *jp, struct output *out) +{ + struct procstat *sp; + struct procstat *spend; + + spend = jp->ps + jp->nprocs; + for (sp = jp->ps + 1; sp < spend; sp++) + outfmt(out, " | %s", sp->cmd); + outcslow('\n', out); + flushall(); +} + + +#if JOBS +STATIC void +xtcsetpgrp(int fd, pid_t pgrp) +{ + if (tcsetpgrp(fd, pgrp)) + sh_error("Cannot set tty process group (%s)", strerror(errno)); +} +#endif + + +STATIC int +getstatus(struct job *job) { + int status; + int retval; + + status = job->ps[job->nprocs - 1].status; + retval = WEXITSTATUS(status); + if (!WIFEXITED(status)) { +#if JOBS + retval = WSTOPSIG(status); + if (!WIFSTOPPED(status)) +#endif + { + /* XXX: limits number of signals */ + retval = WTERMSIG(status); +#if JOBS + if (retval == SIGINT) + job->sigint = 1; +#endif + } + retval += 128; + } + TRACE(("getstatus: job %d, nproc %d, status %x, retval %x\n", + jobno(job), job->nprocs, status, retval)); + return retval; +} diff --git a/bin/dash/src/jobs.h b/bin/dash/src/jobs.h new file mode 100644 index 00000000..6ac6c56d --- /dev/null +++ b/bin/dash/src/jobs.h @@ -0,0 +1,113 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)jobs.h 8.2 (Berkeley) 5/4/95 + */ + +#include <inttypes.h> +#include <sys/types.h> + +/* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ +#define FORK_FG 0 +#define FORK_BG 1 +#define FORK_NOJOB 2 + +/* mode flags for showjob(s) */ +#define SHOW_PGID 0x01 /* only show pgid - for jobs -p */ +#define SHOW_PID 0x04 /* include process pid */ +#define SHOW_CHANGED 0x08 /* only jobs whose state has changed */ + + +/* + * A job structure contains information about a job. A job is either a + * single process or a set of processes contained in a pipeline. In the + * latter case, pidlist will be non-NULL, and will point to a -1 terminated + * array of pids. + */ + +struct procstat { + pid_t pid; /* process id */ + int status; /* last process status from wait() */ + char *cmd; /* text of command being run */ +}; + +struct job { + struct procstat ps0; /* status of process */ + struct procstat *ps; /* status or processes when more than one */ +#if JOBS + int stopstatus; /* status of a stopped job */ +#endif + uint32_t + nprocs: 16, /* number of processes */ + state: 8, +#define JOBRUNNING 0 /* at least one proc running */ +#define JOBSTOPPED 1 /* all procs are stopped */ +#define JOBDONE 2 /* all procs are completed */ +#if JOBS + sigint: 1, /* job was killed by SIGINT */ + jobctl: 1, /* job running under job control */ +#endif + waited: 1, /* true if this entry has been waited for */ + used: 1, /* true if this entry is in used */ + changed: 1; /* true if status has changed */ + struct job *prev_job; /* previous job */ +}; + +union node; + +extern pid_t backgndpid; /* pid of last background process */ +extern int job_warning; /* user was warned about stopped jobs */ +#if JOBS +extern int jobctl; /* true if doing job control */ +#else +#define jobctl 0 +#endif +extern int vforked; /* Set if we are in the vforked child */ + +void setjobctl(int); +int killcmd(int, char **); +int fgcmd(int, char **); +int bgcmd(int, char **); +int jobscmd(int, char **); +struct output; +void showjobs(struct output *, int); +int waitcmd(int, char **); +struct job *makejob(union node *, int); +int forkshell(struct job *, union node *, int); +struct job *vforkexec(union node *n, char **argv, const char *path, int idx); +int waitforjob(struct job *); +int stoppedjobs(void); + +#if ! JOBS +#define setjobctl(on) ((void)(on)) /* do nothing */ +#endif diff --git a/bin/dash/src/machdep.h b/bin/dash/src/machdep.h new file mode 100644 index 00000000..f2ff0ad8 --- /dev/null +++ b/bin/dash/src/machdep.h @@ -0,0 +1,47 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)machdep.h 8.2 (Berkeley) 5/4/95 + */ + +/* + * Most machines require the value returned from malloc to be aligned + * in some way. The following macro will get this right on many machines. + */ + +#define SHELL_SIZE (sizeof(union {int i; char *cp; double d; }) - 1) +/* + * It appears that grabstackstr() will barf with such alignments + * because stalloc() will return a string allocated in a new stackblock. + */ +#define SHELL_ALIGN(nbytes) (((nbytes) + SHELL_SIZE) & ~SHELL_SIZE) diff --git a/bin/dash/src/mail.c b/bin/dash/src/mail.c new file mode 100644 index 00000000..8eacb2d0 --- /dev/null +++ b/bin/dash/src/mail.c @@ -0,0 +1,115 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Routines to check for mail. (Perhaps make part of main.c?) + */ +#include <sys/types.h> +#include <sys/stat.h> +#include <stdlib.h> + +#include "shell.h" +#include "nodes.h" +#include "exec.h" /* defines padvance() */ +#include "var.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "mail.h" +#include "mystring.h" + + +#define MAXMBOXES 10 + +/* times of mailboxes */ +static time_t mailtime[MAXMBOXES]; +/* Set if MAIL or MAILPATH is changed. */ +static int changed; + + + +/* + * Print appropriate message(s) if mail has arrived. If changed is set, + * then the value of MAIL has changed, so we just update the values. + */ + +void +chkmail(void) +{ + const char *mpath; + char *p; + char *q; + time_t *mtp; + struct stackmark smark; + struct stat64 statb; + + setstackmark(&smark); + mpath = mpathset() ? mpathval() : mailval(); + for (mtp = mailtime; mtp < mailtime + MAXMBOXES; mtp++) { + int len; + + len = padvance_magic(&mpath, nullstr, 2); + if (!len) + break; + p = stackblock(); + if (*p == '\0') + continue; + for (q = p ; *q ; q++); +#ifdef DEBUG + if (q[-1] != '/') + abort(); +#endif + q[-1] = '\0'; /* delete trailing '/' */ + if (stat64(p, &statb) < 0) { + *mtp = 0; + continue; + } + if (!changed && statb.st_mtime != *mtp) { + outfmt( + &errout, snlfmt, + pathopt ? pathopt : "you have mail" + ); + } + *mtp = statb.st_mtime; + } + changed = 0; + popstackmark(&smark); +} + + +void +changemail(const char *val) +{ + changed++; +} diff --git a/bin/dash/src/mail.h b/bin/dash/src/mail.h new file mode 100644 index 00000000..3c6b21d2 --- /dev/null +++ b/bin/dash/src/mail.h @@ -0,0 +1,38 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)mail.h 8.2 (Berkeley) 5/4/95 + */ + +void chkmail(void); +void changemail(const char *); diff --git a/bin/dash/src/main.c b/bin/dash/src/main.c new file mode 100644 index 00000000..7a285346 --- /dev/null +++ b/bin/dash/src/main.c @@ -0,0 +1,363 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <stdio.h> +#include <signal.h> +#include <sys/stat.h> +#include <unistd.h> +#include <fcntl.h> + + +#include "shell.h" +#include "main.h" +#include "mail.h" +#include "options.h" +#include "output.h" +#include "parser.h" +#include "nodes.h" +#include "expand.h" +#include "eval.h" +#include "jobs.h" +#include "input.h" +#include "trap.h" +#include "var.h" +#include "show.h" +#include "memalloc.h" +#include "error.h" +#include "init.h" +#include "mystring.h" +#include "exec.h" +#include "cd.h" + +#define PROFILE 0 + +int rootpid; +int shlvl; +#ifdef __GLIBC__ +int *dash_errno; +#endif +#if PROFILE +short profile_buf[16384]; +extern int etext(); +#endif +MKINIT struct jmploc main_handler; + +STATIC void read_profile(const char *); +STATIC char *find_dot_file(char *); +static int cmdloop(int); +int main(int, char **); + +/* + * Main routine. We initialize things, parse the arguments, execute + * profiles if we're a login shell, and then call cmdloop to execute + * commands. The setjmp call sets up the location to jump to when an + * exception occurs. When an exception occurs the variable "state" + * is used to figure out how far we had gotten. + */ + +int +main(int argc, char **argv) +{ + char *shinit; + volatile int state; + struct stackmark smark; + int login; + +#ifdef __GLIBC__ + dash_errno = __errno_location(); +#endif + +#if PROFILE + monitor(4, etext, profile_buf, sizeof profile_buf, 50); +#endif + state = 0; + if (unlikely(setjmp(main_handler.loc))) { + int e; + int s; + + exitreset(); + + e = exception; + + s = state; + if (e == EXEND || e == EXEXIT || s == 0 || iflag == 0 || shlvl) + exitshell(); + + reset(); + + if (e == EXINT +#if ATTY + && (! attyset() || equal(termval(), "emacs")) +#endif + ) { + out2c('\n'); +#ifdef FLUSHERR + flushout(out2); +#endif + } + popstackmark(&smark); + FORCEINTON; /* enable interrupts */ + if (s == 1) + goto state1; + else if (s == 2) + goto state2; + else if (s == 3) + goto state3; + else + goto state4; + } + handler = &main_handler; +#ifdef DEBUG + opentrace(); + trputs("Shell args: "); trargs(argv); +#endif + rootpid = getpid(); + init(); + setstackmark(&smark); + login = procargs(argc, argv); + if (login) { + state = 1; + read_profile("/etc/profile"); +state1: + state = 2; + read_profile("$HOME/.profile"); + } +state2: + state = 3; + if ( +#ifndef linux + getuid() == geteuid() && getgid() == getegid() && +#endif + iflag + ) { + if ((shinit = lookupvar("ENV")) != NULL && *shinit != '\0') { + read_profile(shinit); + } + } + popstackmark(&smark); +state3: + state = 4; + if (minusc) + evalstring(minusc, sflag ? 0 : EV_EXIT); + + if (sflag || minusc == NULL) { +state4: /* XXX ??? - why isn't this before the "if" statement */ + cmdloop(1); + } +#if PROFILE + monitor(0); +#endif +#if GPROF + { + extern void _mcleanup(void); + _mcleanup(); + } +#endif + exitshell(); + /* NOTREACHED */ +} + + +/* + * Read and execute commands. "Top" is nonzero for the top level command + * loop; it turns on prompting if the shell is interactive. + */ + +static int +cmdloop(int top) +{ + union node *n; + struct stackmark smark; + int inter; + int status = 0; + int numeof = 0; + + TRACE(("cmdloop(%d) called\n", top)); + for (;;) { + int skip; + + setstackmark(&smark); + if (jobctl) + showjobs(out2, SHOW_CHANGED); + inter = 0; + if (iflag && top) { + inter++; + chkmail(); + } + n = parsecmd(inter); + /* showtree(n); DEBUG */ + if (n == NEOF) { + if (!top || numeof >= 50) + break; + if (!stoppedjobs()) { + if (!Iflag) { + if (iflag) { + out2c('\n'); +#ifdef FLUSHERR + flushout(out2); +#endif + } + break; + } + out2str("\nUse \"exit\" to leave shell.\n"); + } + numeof++; + } else if (nflag == 0) { + int i; + + job_warning = (job_warning == 2) ? 1 : 0; + numeof = 0; + i = evaltree(n, 0); + if (n) + status = i; + } + popstackmark(&smark); + + skip = evalskip; + if (skip) { + evalskip &= ~(SKIPFUNC | SKIPFUNCDEF); + break; + } + } + + return status; +} + + + +/* + * Read /etc/profile or .profile. Return on error. + */ + +STATIC void +read_profile(const char *name) +{ + name = expandstr(name); + if (setinputfile(name, INPUT_PUSH_FILE | INPUT_NOFILE_OK) < 0) + return; + + cmdloop(0); + popfile(); +} + + + +/* + * Read a file containing shell functions. + */ + +void +readcmdfile(char *name) +{ + setinputfile(name, INPUT_PUSH_FILE); + cmdloop(0); + popfile(); +} + + + +/* + * Take commands from a file. To be compatible we should do a path + * search for the file, which is necessary to find sub-commands. + */ + + +STATIC char * +find_dot_file(char *basename) +{ + char *fullname; + const char *path = pathval(); + struct stat64 statb; + int len; + + /* don't try this for absolute or relative paths */ + if (strchr(basename, '/')) + return basename; + + while ((len = padvance(&path, basename)) >= 0) { + fullname = stackblock(); + if ((!pathopt || *pathopt == 'f') && + !stat64(fullname, &statb) && S_ISREG(statb.st_mode)) { + /* This will be freed by the caller. */ + return stalloc(len); + } + } + + /* not found in the PATH */ + sh_error("%s: not found", basename); + /* NOTREACHED */ +} + +int +dotcmd(int argc, char **argv) +{ + int status = 0; + + nextopt(nullstr); + argv = argptr; + + if (*argv) { + char *fullname; + + fullname = find_dot_file(*argv); + setinputfile(fullname, INPUT_PUSH_FILE); + commandname = fullname; + status = cmdloop(0); + popfile(); + } + + return status; +} + + +int +exitcmd(int argc, char **argv) +{ + if (stoppedjobs()) + return 0; + + if (argc > 1) + savestatus = number(argv[1]); + + exraise(EXEXIT); + /* NOTREACHED */ +} + +#ifdef mkinit +INCLUDE "error.h" + +FORKRESET { + handler = &main_handler; +} +#endif diff --git a/bin/dash/src/main.h b/bin/dash/src/main.h new file mode 100644 index 00000000..19e49835 --- /dev/null +++ b/bin/dash/src/main.h @@ -0,0 +1,54 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)main.h 8.2 (Berkeley) 5/4/95 + */ + +#include <errno.h> + +/* pid of main shell */ +extern int rootpid; +/* shell level: 0 for the main shell, 1 for its children, and so on */ +extern int shlvl; +#define rootshell (!shlvl) + +#ifdef __GLIBC__ +/* glibc sucks */ +extern int *dash_errno; +#undef errno +#define errno (*dash_errno) +#endif + +void readcmdfile(char *); +int dotcmd(int, char **); +int exitcmd(int, char **); diff --git a/bin/dash/src/memalloc.c b/bin/dash/src/memalloc.c new file mode 100644 index 00000000..60637da1 --- /dev/null +++ b/bin/dash/src/memalloc.c @@ -0,0 +1,300 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <stdlib.h> +#include <unistd.h> + +#include "shell.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "machdep.h" +#include "mystring.h" +#include "system.h" + +/* + * Like malloc, but returns an error when out of space. + */ + +pointer +ckmalloc(size_t nbytes) +{ + pointer p; + + p = malloc(nbytes); + if (p == NULL) + sh_error("Out of space"); + return p; +} + + +/* + * Same for realloc. + */ + +pointer +ckrealloc(pointer p, size_t nbytes) +{ + p = realloc(p, nbytes); + if (p == NULL) + sh_error("Out of space"); + return p; +} + + +/* + * Make a copy of a string in safe storage. + */ + +char * +savestr(const char *s) +{ + char *p = strdup(s); + if (!p) + sh_error("Out of space"); + return p; +} + + +/* + * Parse trees for commands are allocated in lifo order, so we use a stack + * to make this more efficient, and also to avoid all sorts of exception + * handling code to handle interrupts in the middle of a parse. + * + * The size 504 was chosen because the Ultrix malloc handles that size + * well. + */ + +/* minimum size of a block */ +#define MINSIZE SHELL_ALIGN(504) + +struct stack_block { + struct stack_block *prev; + char space[MINSIZE]; +}; + +struct stack_block stackbase; +struct stack_block *stackp = &stackbase; +char *stacknxt = stackbase.space; +size_t stacknleft = MINSIZE; +char *sstrend = stackbase.space + MINSIZE; + +pointer +stalloc(size_t nbytes) +{ + char *p; + size_t aligned; + + aligned = SHELL_ALIGN(nbytes); + if (aligned > stacknleft) { + size_t len; + size_t blocksize; + struct stack_block *sp; + + blocksize = aligned; + if (blocksize < MINSIZE) + blocksize = MINSIZE; + len = sizeof(struct stack_block) - MINSIZE + blocksize; + if (len < blocksize) + sh_error("Out of space"); + INTOFF; + sp = ckmalloc(len); + sp->prev = stackp; + stacknxt = sp->space; + stacknleft = blocksize; + sstrend = stacknxt + blocksize; + stackp = sp; + INTON; + } + p = stacknxt; + stacknxt += aligned; + stacknleft -= aligned; + return p; +} + + +void +stunalloc(pointer p) +{ +#ifdef DEBUG + if (!p || (stacknxt < (char *)p) || ((char *)p < stackp->space)) { + write(2, "stunalloc\n", 10); + abort(); + } +#endif + stacknleft += stacknxt - (char *)p; + stacknxt = p; +} + + + +void pushstackmark(struct stackmark *mark, size_t len) +{ + mark->stackp = stackp; + mark->stacknxt = stacknxt; + mark->stacknleft = stacknleft; + grabstackblock(len); +} + +void setstackmark(struct stackmark *mark) +{ + pushstackmark(mark, stacknxt == stackp->space && stackp != &stackbase); +} + + +void +popstackmark(struct stackmark *mark) +{ + struct stack_block *sp; + + INTOFF; + while (stackp != mark->stackp) { + sp = stackp; + stackp = sp->prev; + ckfree(sp); + } + stacknxt = mark->stacknxt; + stacknleft = mark->stacknleft; + sstrend = mark->stacknxt + mark->stacknleft; + INTON; +} + + +/* + * When the parser reads in a string, it wants to stick the string on the + * stack and only adjust the stack pointer when it knows how big the + * string is. Stackblock (defined in stack.h) returns a pointer to a block + * of space on top of the stack and stackblocklen returns the length of + * this block. Growstackblock will grow this space by at least one byte, + * possibly moving it (like realloc). Grabstackblock actually allocates the + * part of the block that has been used. + */ + +static void growstackblock(size_t min) +{ + size_t newlen; + + newlen = stacknleft * 2; + if (newlen < stacknleft) + sh_error("Out of space"); + min = SHELL_ALIGN(min | 128); + if (newlen < min) + newlen += min; + + if (stacknxt == stackp->space && stackp != &stackbase) { + struct stack_block *sp; + struct stack_block *prevstackp; + size_t grosslen; + + INTOFF; + sp = stackp; + prevstackp = sp->prev; + grosslen = newlen + sizeof(struct stack_block) - MINSIZE; + sp = ckrealloc((pointer)sp, grosslen); + sp->prev = prevstackp; + stackp = sp; + stacknxt = sp->space; + stacknleft = newlen; + sstrend = sp->space + newlen; + INTON; + } else { + char *oldspace = stacknxt; + int oldlen = stacknleft; + char *p = stalloc(newlen); + + /* free the space we just allocated */ + stacknxt = memcpy(p, oldspace, oldlen); + stacknleft += newlen; + } +} + +/* + * The following routines are somewhat easier to use than the above. + * The user declares a variable of type STACKSTR, which may be declared + * to be a register. The macro STARTSTACKSTR initializes things. Then + * the user uses the macro STPUTC to add characters to the string. In + * effect, STPUTC(c, p) is the same as *p++ = c except that the stack is + * grown as necessary. When the user is done, she can just leave the + * string there and refer to it using stackblock(). Or she can allocate + * the space for it using grabstackstr(). If it is necessary to allow + * someone else to use the stack temporarily and then continue to grow + * the string, the user should use grabstack to allocate the space, and + * then call ungrabstr(p) to return to the previous mode of operation. + * + * USTPUTC is like STPUTC except that it doesn't check for overflow. + * CHECKSTACKSPACE can be called before USTPUTC to ensure that there + * is space for at least one character. + */ + +void * +growstackstr(void) +{ + size_t len = stackblocksize(); + + growstackblock(0); + return stackblock() + len; +} + +char *growstackto(size_t len) +{ + if (stackblocksize() < len) + growstackblock(len); + return stackblock(); +} + +/* + * Called from CHECKSTRSPACE. + */ + +char * +makestrspace(size_t newlen, char *p) +{ + size_t len = p - stacknxt; + + return growstackto(len + newlen) + len; +} + +char * +stnputs(const char *s, size_t n, char *p) +{ + p = makestrspace(n, p); + p = mempcpy(p, s, n); + return p; +} + +char * +stputs(const char *s, char *p) +{ + return stnputs(s, strlen(s), p); +} diff --git a/bin/dash/src/memalloc.h b/bin/dash/src/memalloc.h new file mode 100644 index 00000000..b9adf764 --- /dev/null +++ b/bin/dash/src/memalloc.h @@ -0,0 +1,101 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 + */ + +#include <stddef.h> +#include <stdlib.h> + +struct stackmark { + struct stack_block *stackp; + char *stacknxt; + size_t stacknleft; +}; + + +extern char *stacknxt; +extern size_t stacknleft; +extern char *sstrend; + +pointer ckmalloc(size_t); +pointer ckrealloc(pointer, size_t); +char *savestr(const char *); +pointer stalloc(size_t); +void stunalloc(pointer); +void pushstackmark(struct stackmark *mark, size_t len); +void setstackmark(struct stackmark *); +void popstackmark(struct stackmark *); +void *growstackstr(void); +char *growstackto(size_t len); +char *makestrspace(size_t, char *); +char *stnputs(const char *, size_t, char *); +char *stputs(const char *, char *); + + +static inline void grabstackblock(size_t len) +{ + stalloc(len); +} + +static inline char *_STPUTC(int c, char *p) { + if (p == sstrend) + p = growstackstr(); + *p++ = c; + return p; +} + +#define stackblock() ((void *)stacknxt) +#define stackblocksize() stacknleft +#define STARTSTACKSTR(p) ((p) = stackblock()) +#define STPUTC(c, p) ((p) = _STPUTC((c), (p))) +#define CHECKSTRSPACE(n, p) \ + ({ \ + char *q = (p); \ + size_t l = (n); \ + size_t m = sstrend - q; \ + if (l > m) \ + (p) = makestrspace(l, q); \ + 0; \ + }) +#define USTPUTC(c, p) (*p++ = (c)) +#define STACKSTRNUL(p) ((p) == sstrend? (p = growstackstr(), *p = '\0') : (*p = '\0')) +#define STUNPUTC(p) (--p) +#define STTOPC(p) p[-1] +#define STADJUST(amount, p) (p += (amount)) + +#define grabstackstr(p) stalloc((char *)(p) - (char *)stackblock()) +#define ungrabstackstr(s, p) stunalloc((s)) +#define stackstrend() ((void *)sstrend) + +#define ckfree(p) free((pointer)(p)) diff --git a/bin/dash/src/miscbltin.c b/bin/dash/src/miscbltin.c new file mode 100644 index 00000000..5ccbbcb8 --- /dev/null +++ b/bin/dash/src/miscbltin.c @@ -0,0 +1,506 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Miscelaneous builtins. + */ + +#include <sys/types.h> /* quad_t */ +#include <sys/param.h> /* BSD4_4 */ +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/resource.h> +#include <unistd.h> +#include <stdlib.h> +#include <ctype.h> +#include <inttypes.h> + +#include "shell.h" +#include "options.h" +#include "var.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "miscbltin.h" +#include "mystring.h" +#include "main.h" +#include "expand.h" +#include "parser.h" +#include "trap.h" + +#undef rflag + + +/** handle one line of the read command. + * more fields than variables -> remainder shall be part of last variable. + * less fields than variables -> remaining variables unset. + * + * @param line complete line of input + * @param ac argument count + * @param ap argument (variable) list + * @param len length of line including trailing '\0' + */ +static void +readcmd_handle_line(char *s, int ac, char **ap) +{ + struct arglist arglist; + struct strlist *sl; + + s = grabstackstr(s); + + arglist.lastp = &arglist.list; + + ifsbreakup(s, ac, &arglist); + *arglist.lastp = NULL; + ifsfree(); + + sl = arglist.list; + + do { + if (!sl) { + /* nullify remaining arguments */ + do { + setvar(*ap, nullstr, 0); + } while (*++ap); + + return; + } + + /* set variable to field */ + rmescapes(sl->text); + setvar(*ap, sl->text, 0); + sl = sl->next; + } while (*++ap); +} + +/* + * The read builtin. The -e option causes backslashes to escape the + * following character. The -p option followed by an argument prompts + * with the argument. + * + * This uses unbuffered input, which may be avoidable in some cases. + */ + +int +readcmd(int argc, char **argv) +{ + char **ap; + char c; + int rflag; + char *prompt; + char *p; + int startloc; + int newloc; + int status; + int i; + + rflag = 0; + prompt = NULL; + while ((i = nextopt("p:r")) != '\0') { + if (i == 'p') + prompt = optionarg; + else + rflag = 1; + } + if (prompt && isatty(0)) { + out2str(prompt); +#ifdef FLUSHERR + flushall(); +#endif + } + if (*(ap = argptr) == NULL) + sh_error("arg count"); + + status = 0; + STARTSTACKSTR(p); + + goto start; + + for (;;) { + switch (read(0, &c, 1)) { + case 1: + break; + default: + if (errno == EINTR && !pending_sig) + continue; + /* fall through */ + case 0: + status = 1; + goto out; + } + if (c == '\0') + continue; + if (newloc >= startloc) { + if (c == '\n') + goto resetbs; + goto put; + } + if (!rflag && c == '\\') { + newloc = p - (char *)stackblock(); + continue; + } + if (c == '\n') + break; +put: + CHECKSTRSPACE(2, p); + if (strchr(qchars, c)) + USTPUTC(CTLESC, p); + USTPUTC(c, p); + + if (newloc >= startloc) { +resetbs: + recordregion(startloc, newloc, 0); +start: + startloc = p - (char *)stackblock(); + newloc = startloc - 1; + } + } +out: + recordregion(startloc, p - (char *)stackblock(), 0); + STACKSTRNUL(p); + readcmd_handle_line(p + 1, argc - (ap - argv), ap); + return status; +} + + + +/* + * umask builtin + * + * This code was ripped from pdksh 5.2.14 and hacked for use with + * dash by Herbert Xu. + * + * Public domain. + */ + +int +umaskcmd(int argc, char **argv) +{ + char *ap; + int mask; + int i; + int symbolic_mode = 0; + + while ((i = nextopt("S")) != '\0') { + symbolic_mode = 1; + } + + INTOFF; + mask = umask(0); + umask(mask); + INTON; + + if ((ap = *argptr) == NULL) { + if (symbolic_mode) { + char buf[18]; + int j; + + mask = ~mask; + ap = buf; + for (i = 0; i < 3; i++) { + *ap++ = "ugo"[i]; + *ap++ = '='; + for (j = 0; j < 3; j++) + if (mask & (1 << (8 - (3*i + j)))) + *ap++ = "rwx"[j]; + *ap++ = ','; + } + ap[-1] = '\0'; + out1fmt("%s\n", buf); + } else { + out1fmt("%.4o\n", mask); + } + } else { + int new_mask; + + if (isdigit((unsigned char) *ap)) { + new_mask = 0; + do { + if (*ap >= '8' || *ap < '0') + sh_error(illnum, *argptr); + new_mask = (new_mask << 3) + (*ap - '0'); + } while (*++ap != '\0'); + } else { + int positions, new_val; + char op; + + mask = ~mask; + new_mask = mask; + positions = 0; + while (*ap) { + while (*ap && strchr("augo", *ap)) + switch (*ap++) { + case 'a': positions |= 0111; break; + case 'u': positions |= 0100; break; + case 'g': positions |= 0010; break; + case 'o': positions |= 0001; break; + } + if (!positions) + positions = 0111; /* default is a */ + if (!strchr("=+-", op = *ap)) + break; + ap++; + new_val = 0; + while (*ap && strchr("rwxugoXs", *ap)) + switch (*ap++) { + case 'r': new_val |= 04; break; + case 'w': new_val |= 02; break; + case 'x': new_val |= 01; break; + case 'u': new_val |= mask >> 6; + break; + case 'g': new_val |= mask >> 3; + break; + case 'o': new_val |= mask >> 0; + break; + case 'X': if (mask & 0111) + new_val |= 01; + break; + case 's': /* ignored */ + break; + } + new_val = (new_val & 07) * positions; + switch (op) { + case '-': + new_mask &= ~new_val; + break; + case '=': + new_mask = new_val + | (new_mask & ~(positions * 07)); + break; + case '+': + new_mask |= new_val; + } + if (*ap == ',') { + positions = 0; + ap++; + } else if (!strchr("=+-", *ap)) + break; + } + if (*ap) { + sh_error("Illegal mode: %s", *argptr); + return 1; + } + new_mask = ~new_mask; + } + umask(new_mask); + } + return 0; +} + +#ifdef HAVE_GETRLIMIT +/* + * ulimit builtin + * + * This code, originally by Doug Gwyn, Doug Kingston, Eric Gisin, and + * Michael Rendell was ripped from pdksh 5.0.8 and hacked for use with + * ash by J.T. Conklin. + * + * Public domain. + */ + +struct limits { + const char *name; + int cmd; + int factor; /* multiply by to get rlim_{cur,max} values */ + char option; +}; + +static const struct limits limits[] = { +#ifdef RLIMIT_CPU + { "time(seconds)", RLIMIT_CPU, 1, 't' }, +#endif +#ifdef RLIMIT_FSIZE + { "file(blocks)", RLIMIT_FSIZE, 512, 'f' }, +#endif +#ifdef RLIMIT_DATA + { "data(kbytes)", RLIMIT_DATA, 1024, 'd' }, +#endif +#ifdef RLIMIT_STACK + { "stack(kbytes)", RLIMIT_STACK, 1024, 's' }, +#endif +#ifdef RLIMIT_CORE + { "coredump(blocks)", RLIMIT_CORE, 512, 'c' }, +#endif +#ifdef RLIMIT_RSS + { "memory(kbytes)", RLIMIT_RSS, 1024, 'm' }, +#endif +#ifdef RLIMIT_MEMLOCK + { "locked memory(kbytes)", RLIMIT_MEMLOCK, 1024, 'l' }, +#endif +#ifdef RLIMIT_NPROC + { "process", RLIMIT_NPROC, 1, 'p' }, +#endif +#ifdef RLIMIT_NOFILE + { "nofiles", RLIMIT_NOFILE, 1, 'n' }, +#endif +#ifdef RLIMIT_AS + { "vmemory(kbytes)", RLIMIT_AS, 1024, 'v' }, +#endif +#ifdef RLIMIT_LOCKS + { "locks", RLIMIT_LOCKS, 1, 'w' }, +#endif +#ifdef RLIMIT_RTPRIO + { "rtprio", RLIMIT_RTPRIO, 1, 'r' }, +#endif + { (char *) 0, 0, 0, '\0' } +}; + +enum limtype { SOFT = 0x1, HARD = 0x2 }; + +static void printlim(enum limtype how, const struct rlimit *limit, + const struct limits *l) +{ + rlim_t val; + + val = limit->rlim_max; + if (how & SOFT) + val = limit->rlim_cur; + + if (val == RLIM_INFINITY) + out1fmt("unlimited\n"); + else { + val /= l->factor; + out1fmt("%" PRIdMAX "\n", (intmax_t) val); + } +} + +int +ulimitcmd(int argc, char **argv) +{ + int c; + rlim_t val = 0; + enum limtype how = SOFT | HARD; + const struct limits *l; + int set, all = 0; + int optc, what; + struct rlimit limit; + + what = 'f'; + while ((optc = nextopt("HSa" +#ifdef RLIMIT_CPU + "t" +#endif +#ifdef RLIMIT_FSIZE + "f" +#endif +#ifdef RLIMIT_DATA + "d" +#endif +#ifdef RLIMIT_STACK + "s" +#endif +#ifdef RLIMIT_CORE + "c" +#endif +#ifdef RLIMIT_RSS + "m" +#endif +#ifdef RLIMIT_MEMLOCK + "l" +#endif +#ifdef RLIMIT_NPROC + "p" +#endif +#ifdef RLIMIT_NOFILE + "n" +#endif +#ifdef RLIMIT_AS + "v" +#endif +#ifdef RLIMIT_LOCKS + "w" +#endif + )) != '\0') + switch (optc) { + case 'H': + how = HARD; + break; + case 'S': + how = SOFT; + break; + case 'a': + all = 1; + break; + default: + what = optc; + } + + for (l = limits; l->option != what; l++) + ; + + set = *argptr ? 1 : 0; + if (set) { + char *p = *argptr; + + if (all || argptr[1]) + sh_error("too many arguments"); + if (strcmp(p, "unlimited") == 0) + val = RLIM_INFINITY; + else { + val = (rlim_t) 0; + + while ((c = *p++) >= '0' && c <= '9') + { + val = (val * 10) + (long)(c - '0'); + if (val < (rlim_t) 0) + break; + } + if (c) + sh_error("bad number"); + val *= l->factor; + } + } + if (all) { + for (l = limits; l->name; l++) { + getrlimit(l->cmd, &limit); + out1fmt("%-20s ", l->name); + printlim(how, &limit, l); + } + return 0; + } + + getrlimit(l->cmd, &limit); + if (set) { + if (how & HARD) + limit.rlim_max = val; + if (how & SOFT) + limit.rlim_cur = val; + if (setrlimit(l->cmd, &limit) < 0) + sh_error("error setting limit (%s)", strerror(errno)); + } else { + printlim(how, &limit, l); + } + return 0; +} +#endif diff --git a/bin/dash/src/miscbltin.h b/bin/dash/src/miscbltin.h new file mode 100644 index 00000000..dd9a8d1c --- /dev/null +++ b/bin/dash/src/miscbltin.h @@ -0,0 +1,31 @@ +/* + * Copyright (c) 1997 Christos Zoulas. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +int readcmd(int, char **); +int umaskcmd(int, char **); +int ulimitcmd(int, char **); diff --git a/bin/dash/src/mkbuiltins b/bin/dash/src/mkbuiltins new file mode 100644 index 00000000..f1f25932 --- /dev/null +++ b/bin/dash/src/mkbuiltins @@ -0,0 +1,120 @@ +#!/bin/sh - +# $NetBSD: mkbuiltins,v 1.17 2002/11/24 22:35:41 christos Exp $ +# +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)mkbuiltins 8.2 (Berkeley) 5/4/95 + +tempfile=mktemp +if ! type tempfile > /dev/null 2>&1 && ! type mktemp > /dev/null 2>&1; then + _my_tempfile() + { + local index=0 + while test -f "${TMPDIR:-/tmp}/builtin.$$.$index"; do + index=`expr $index + 1` + done + + touch "${TMPDIR:-/tmp}/builtin.$$.$index" + echo "${TMPDIR:-/tmp}/builtin.$$.$index" + } + + tempfile="_my_tempfile" +elif ! type tempfile > /dev/null 2>&1; then + tempfile="mktemp ${TMPDIR:-/tmp}/builtin.XXXXXX" +fi + +trap 'rm -f $temp $temp2' EXIT +temp=$($tempfile) +temp2=$($tempfile) + +builtins=$1 + +exec > builtins.c +cat <<\! +/* + * This file was generated by the mkbuiltins program. + */ + +#include "shell.h" +#include "builtins.h" + +! +< $builtins sed '/^#/d; /^ *$/d' > $temp +awk '{ printf "int %s(int, char **);\n", $1}' $temp +echo ' +const struct builtincmd builtincmd[] = {' +awk '{ for (i = 2 ; i <= NF ; i++) { + line = $i "\t" $1 + if ($i ~ /^-/) + line = $(++i) "\t" line + print line + }}' $temp | LC_ALL= LC_COLLATE=C sort -k 1,1 | tee $temp2 | awk '{ + opt = "" + if (NF > 2) { + opt = substr($2, 2) + $2 = $3 + } + mask = 0 + cmd = $2 + if (opt ~ /n/) { cmd = "NULL" } + if (opt ~ /s/) { mask += 1 } + if (opt ~ /[su]/) { mask += 2 } + if (opt ~ /a/) { mask += 4 } + printf "\t{ \"%s\", %s, %d },\n", $1, cmd, mask + }' +echo '};' + +exec > builtins.h +cat <<\! +/* + * This file was generated by the mkbuiltins program. + */ + +! +sed 's/ -[a-z]*//' $temp2 | nl -ba -v0 | + LC_ALL= LC_COLLATE=C sort -u -k 3,3 | + tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | + awk '{ printf "#define %s (builtincmd + %d)\n", $3, $1}' +printf '\n#define NUMBUILTINS %d\n' $(wc -l < $temp2) +echo ' +#define BUILTIN_SPECIAL 0x1 +#define BUILTIN_REGULAR 0x2 +#define BUILTIN_ASSIGN 0x4 + +struct builtincmd { + const char *name; + int (*builtin)(int, char **); + unsigned flags; +}; + +extern const struct builtincmd builtincmd[];' diff --git a/bin/dash/src/mkinit.c b/bin/dash/src/mkinit.c new file mode 100644 index 00000000..9025862e --- /dev/null +++ b/bin/dash/src/mkinit.c @@ -0,0 +1,493 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * This program scans all the source files for code to handle various + * special events and combines this code into one file. This (allegedly) + * improves the structure of the program since there is no need for + * anyone outside of a module to know that that module performs special + * operations on particular events. + * + * Usage: mkinit sourcefile... + */ + + +#include <sys/types.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <fcntl.h> +#include <unistd.h> + + +/* + * OUTFILE is the name of the output file. Output is initially written + * to the file OUTTEMP, which is then moved to OUTFILE. + */ + +#define OUTFILE "init.c" +#define OUTTEMP "init.c.new" + + +/* + * A text structure is basicly just a string that grows as more characters + * are added onto the end of it. It is implemented as a linked list of + * blocks of characters. The routines addstr and addchar append a string + * or a single character, respectively, to a text structure. Writetext + * writes the contents of a text structure to a file. + */ + +#define BLOCKSIZE 512 + +struct text { + char *nextc; + int nleft; + struct block *start; + struct block *last; +}; + +struct block { + struct block *next; + char text[BLOCKSIZE]; +}; + + +/* + * There is one event structure for each event that mkinit handles. + */ + +struct event { + char *name; /* name of event (e.g. INIT) */ + char *routine; /* name of routine called on event */ + char *comment; /* comment describing routine */ + struct text code; /* code for handling event */ +}; + + +char writer[] = "\ +/*\n\ + * This file was generated by the mkinit program.\n\ + */\n\ +\n"; + +char init[] = "\ +/*\n\ + * Initialization code.\n\ + */\n"; + +char exitreset[] = "\ +/*\n\ + * This routine is called when an error or an interrupt occurs in an\n\ + * interactive shell and control is returned to the main command loop\n\ + * but prior to exitshell. \n\ + */\n"; + +char forkreset[] = "\ +/*\n\ + * This routine is called when we enter a subshell.\n\ + */\n"; + +char reset[] = "\ +/*\n\ + * This routine is called when an error or an interrupt occurs in an\n\ + * interactive shell and control is returned to the main command loop.\n\ + */\n"; + + +struct event event[] = { + {"INIT", "init", init}, + {"EXITRESET", "exitreset", exitreset}, + {"FORKRESET", "forkreset", forkreset}, + {"RESET", "reset", reset}, + {NULL, NULL} +}; + + +char *curfile; /* current file */ +int linno; /* current line */ +char *header_files[200]; /* list of header files */ +struct text defines; /* #define statements */ +struct text decls; /* declarations */ +int amiddecls; /* for formatting */ + + +void readfile(char *); +int match(char *, char *); +int gooddefine(char *); +void doevent(struct event *, FILE *, char *); +void doinclude(char *); +void dodecl(char *, FILE *); +void output(void); +void addstr(char *, struct text *); +void addchar(int, struct text *); +void writetext(struct text *, FILE *); +FILE *ckfopen(char *, char *); +void *ckmalloc(int); +char *savestr(char *); +static void error(char *); +int main(int, char **); + +#define equal(s1, s2) (strcmp(s1, s2) == 0) + +int +main(int argc, char **argv) +{ + char **ap; + + header_files[0] = "\"shell.h\""; + header_files[1] = "\"mystring.h\""; + header_files[2] = "\"init.h\""; + for (ap = argv + 1 ; *ap ; ap++) + readfile(*ap); + output(); + rename(OUTTEMP, OUTFILE); + exit(0); + /* NOTREACHED */ +} + + +/* + * Parse an input file. + */ + +void +readfile(char *fname) +{ + FILE *fp; + char line[1024]; + struct event *ep; + + fp = ckfopen(fname, "r"); + curfile = fname; + linno = 0; + amiddecls = 0; + while (fgets(line, sizeof line, fp) != NULL) { + linno++; + for (ep = event ; ep->name ; ep++) { + if (line[0] == ep->name[0] && match(ep->name, line)) { + doevent(ep, fp, fname); + break; + } + } + if (line[0] == 'I' && match("INCLUDE", line)) + doinclude(line); + if (line[0] == 'M' && match("MKINIT", line)) + dodecl(line, fp); + if (line[0] == '#' && gooddefine(line)) { + char *cp; + char line2[1024]; + static const char undef[] = "#undef "; + + strcpy(line2, line); + memcpy(line2, undef, sizeof(undef) - 1); + cp = line2 + sizeof(undef) - 1; + while(*cp && (*cp == ' ' || *cp == '\t')) + cp++; + while(*cp && *cp != ' ' && *cp != '\t' && *cp != '\n') + cp++; + *cp++ = '\n'; *cp = '\0'; + addstr(line2, &defines); + addstr(line, &defines); + } + } + fclose(fp); +} + + +int +match(char *name, char *line) +{ + char *p, *q; + + p = name, q = line; + while (*p) { + if (*p++ != *q++) + return 0; + } + if (*q != '{' && *q != ' ' && *q != '\t' && *q != '\n') + return 0; + return 1; +} + + +int +gooddefine(char *line) +{ + char *p; + + if (! match("#define", line)) + return 0; /* not a define */ + p = line + 7; + while (*p == ' ' || *p == '\t') + p++; + while (*p != ' ' && *p != '\t') { + if (*p == '(') + return 0; /* macro definition */ + p++; + } + while (*p != '\n' && *p != '\0') + p++; + if (p[-1] == '\\') + return 0; /* multi-line definition */ + return 1; +} + + +void +doevent(struct event *ep, FILE *fp, char *fname) +{ + char line[1024]; + int indent; + char *p; + + sprintf(line, "\n /* from %s: */\n", fname); + addstr(line, &ep->code); + addstr(" {\n", &ep->code); + for (;;) { + linno++; + if (fgets(line, sizeof line, fp) == NULL) + error("Unexpected EOF"); + if (equal(line, "}\n")) + break; + indent = 6; + for (p = line ; *p == '\t' ; p++) + indent += 8; + for ( ; *p == ' ' ; p++) + indent++; + if (*p == '\n' || *p == '#') + indent = 0; + while (indent >= 8) { + addchar('\t', &ep->code); + indent -= 8; + } + while (indent > 0) { + addchar(' ', &ep->code); + indent--; + } + addstr(p, &ep->code); + } + addstr(" }\n", &ep->code); +} + + +void +doinclude(char *line) +{ + char *p; + char *name; + char **pp; + + for (p = line ; *p != '"' && *p != '<' && *p != '\0' ; p++); + if (*p == '\0') + error("Expecting '\"' or '<'"); + name = p; + while (*p != ' ' && *p != '\t' && *p != '\n') + p++; + if (p[-1] != '"' && p[-1] != '>') + error("Missing terminator"); + *p = '\0'; + + /* name now contains the name of the include file */ + for (pp = header_files ; *pp && ! equal(*pp, name) ; pp++); + if (*pp == NULL) + *pp = savestr(name); +} + + +void +dodecl(char *line1, FILE *fp) +{ + char line[1024]; + char *p, *q; + + if (strcmp(line1, "MKINIT\n") == 0) { /* start of struct/union decl */ + addchar('\n', &decls); + do { + linno++; + if (fgets(line, sizeof line, fp) == NULL) + error("Unterminated structure declaration"); + addstr(line, &decls); + } while (line[0] != '}'); + amiddecls = 0; + } else { + if (! amiddecls) + addchar('\n', &decls); + q = NULL; + for (p = line1 + 6 ; *p && strchr("=/\n", *p) == NULL; p++) + continue; + if (*p == '=') { /* eliminate initialization */ + for (q = p ; *q && *q != ';' ; q++); + if (*q == '\0') + q = NULL; + else { + while (p[-1] == ' ') + p--; + *p = '\0'; + } + } + addstr("extern", &decls); + addstr(line1 + 6, &decls); + if (q != NULL) + addstr(q, &decls); + amiddecls = 1; + } +} + + + +/* + * Write the output to the file OUTTEMP. + */ + +void +output(void) +{ + FILE *fp; + char **pp; + struct event *ep; + + fp = ckfopen(OUTTEMP, "w"); + fputs(writer, fp); + for (pp = header_files ; *pp ; pp++) + fprintf(fp, "#include %s\n", *pp); + fputs("\n\n\n", fp); + writetext(&defines, fp); + fputs("\n\n", fp); + writetext(&decls, fp); + for (ep = event ; ep->name ; ep++) { + fputs("\n\n\n", fp); + fputs(ep->comment, fp); + fprintf(fp, "\nvoid\n%s() {\n", ep->routine); + writetext(&ep->code, fp); + fprintf(fp, "}\n"); + } + fclose(fp); +} + + +/* + * A text structure is simply a block of text that is kept in memory. + * Addstr appends a string to the text struct, and addchar appends a single + * character. + */ + +void +addstr(char *s, struct text *text) +{ + while (*s) { + if (--text->nleft < 0) + addchar(*s++, text); + else + *text->nextc++ = *s++; + } +} + + +void +addchar(int c, struct text *text) +{ + struct block *bp; + + if (--text->nleft < 0) { + bp = ckmalloc(sizeof *bp); + if (text->start == NULL) + text->start = bp; + else + text->last->next = bp; + text->last = bp; + text->nextc = bp->text; + text->nleft = BLOCKSIZE - 1; + } + *text->nextc++ = c; +} + +/* + * Write the contents of a text structure to a file. + */ +void +writetext(struct text *text, FILE *fp) +{ + struct block *bp; + + if (text->start != NULL) { + for (bp = text->start ; bp != text->last ; bp = bp->next) { + if ((fwrite(bp->text, sizeof (char), BLOCKSIZE, fp)) != BLOCKSIZE) + error("Can't write data\n"); + } + if ((fwrite(bp->text, sizeof (char), BLOCKSIZE - text->nleft, fp)) != (BLOCKSIZE - text->nleft)) + error("Can't write data\n"); + } +} + +FILE * +ckfopen(char *file, char *mode) +{ + FILE *fp; + + if ((fp = fopen(file, mode)) == NULL) { + fprintf(stderr, "Can't open %s\n", file); + exit(2); + } + return fp; +} + +void * +ckmalloc(int nbytes) +{ + char *p; + + if ((p = malloc(nbytes)) == NULL) + error("Out of space"); + return p; +} + +char * +savestr(char *s) +{ + char *p; + + p = ckmalloc(strlen(s) + 1); + strcpy(p, s); + return p; +} + +static void +error(char *msg) +{ + if (curfile != NULL) + fprintf(stderr, "%s:%d: ", curfile, linno); + fprintf(stderr, "%s\n", msg); + exit(2); + /* NOTREACHED */ +} diff --git a/bin/dash/src/mknodes.c b/bin/dash/src/mknodes.c new file mode 100644 index 00000000..1903a605 --- /dev/null +++ b/bin/dash/src/mknodes.c @@ -0,0 +1,448 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * This program reads the nodetypes file and nodes.c.pat file. It generates + * the files nodes.h and nodes.c. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdarg.h> + +#define MAXTYPES 50 /* max number of node types */ +#define MAXFIELDS 20 /* max fields in a structure */ +#define BUFLEN 100 /* size of character buffers */ + +/* field types */ +#define T_NODE 1 /* union node *field */ +#define T_NODELIST 2 /* struct nodelist *field */ +#define T_STRING 3 +#define T_INT 4 /* int field */ +#define T_OTHER 5 /* other */ +#define T_TEMP 6 /* don't copy this field */ + + +struct field { /* a structure field */ + char *name; /* name of field */ + int type; /* type of field */ + char *decl; /* declaration of field */ +}; + + +struct str { /* struct representing a node structure */ + char *tag; /* structure tag */ + int nfields; /* number of fields in the structure */ + struct field field[MAXFIELDS]; /* the fields of the structure */ + int done; /* set if fully parsed */ +}; + + +static int ntypes; /* number of node types */ +static char *nodename[MAXTYPES]; /* names of the nodes */ +static struct str *nodestr[MAXTYPES]; /* type of structure used by the node */ +static int nstr; /* number of structures */ +static struct str str[MAXTYPES]; /* the structures */ +static struct str *curstr; /* current structure */ +static FILE *infp; +static char line[1024]; +static int linno; +static char *linep; + +static void parsenode(void); +static void parsefield(void); +static void output(char *); +static void outsizes(FILE *); +static void outfunc(FILE *, int); +static void indent(int, FILE *); +static int nextfield(char *); +static void skipbl(void); +static int readline(void); +static void error(const char *, ...); +static char *savestr(const char *); +int main(int, char **); + + +int +main(int argc, char **argv) +{ + + /* + * some versions of linux complain: initializer element is not + * constant if this is done at compile time. + */ + infp = stdin; + + if (argc != 3) + error("usage: mknodes file"); + if ((infp = fopen(argv[1], "r")) == NULL) + error("Can't open %s", argv[1]); + while (readline()) { + if (line[0] == ' ' || line[0] == '\t') + parsefield(); + else if (line[0] != '\0') + parsenode(); + } + output(argv[2]); + exit(0); + /* NOTREACHED */ +} + + + +static void +parsenode(void) +{ + char name[BUFLEN]; + char tag[BUFLEN]; + struct str *sp; + + if (curstr && curstr->nfields > 0) + curstr->done = 1; + nextfield(name); + if (! nextfield(tag)) + error("Tag expected"); + if (*linep != '\0') + error("Garbage at end of line"); + nodename[ntypes] = savestr(name); + for (sp = str ; sp < str + nstr ; sp++) { + if (strcmp(sp->tag, tag) == 0) + break; + } + if (sp >= str + nstr) { + sp->tag = savestr(tag); + sp->nfields = 0; + curstr = sp; + nstr++; + } + nodestr[ntypes] = sp; + ntypes++; +} + + +static void +parsefield(void) +{ + char name[BUFLEN]; + char type[BUFLEN]; + char decl[2 * BUFLEN]; + struct field *fp; + + if (curstr == NULL || curstr->done) + error("No current structure to add field to"); + if (! nextfield(name)) + error("No field name"); + if (! nextfield(type)) + error("No field type"); + fp = &curstr->field[curstr->nfields]; + fp->name = savestr(name); + if (strcmp(type, "nodeptr") == 0) { + fp->type = T_NODE; + sprintf(decl, "union node *%s", name); + } else if (strcmp(type, "nodelist") == 0) { + fp->type = T_NODELIST; + sprintf(decl, "struct nodelist *%s", name); + } else if (strcmp(type, "string") == 0) { + fp->type = T_STRING; + sprintf(decl, "char *%s", name); + } else if (strcmp(type, "int") == 0) { + fp->type = T_INT; + sprintf(decl, "int %s", name); + } else if (strcmp(type, "other") == 0) { + fp->type = T_OTHER; + } else if (strcmp(type, "temp") == 0) { + fp->type = T_TEMP; + } else { + error("Unknown type %s", type); + } + if (fp->type == T_OTHER || fp->type == T_TEMP) { + skipbl(); + fp->decl = savestr(linep); + } else { + if (*linep) + error("Garbage at end of line"); + fp->decl = savestr(decl); + } + curstr->nfields++; +} + + +char writer[] = "\ +/*\n\ + * This file was generated by the mknodes program.\n\ + */\n\ +\n"; + +static void +output(char *file) +{ + FILE *hfile; + FILE *cfile; + FILE *patfile; + int i; + struct str *sp; + struct field *fp; + char *p; + + if ((patfile = fopen(file, "r")) == NULL) + error("Can't open %s", file); + if ((hfile = fopen("nodes.h", "w")) == NULL) + error("Can't create nodes.h"); + if ((cfile = fopen("nodes.c", "w")) == NULL) + error("Can't create nodes.c"); + fputs(writer, hfile); + for (i = 0 ; i < ntypes ; i++) + fprintf(hfile, "#define %s %d\n", nodename[i], i); + fputs("\n\n\n", hfile); + for (sp = str ; sp < &str[nstr] ; sp++) { + fprintf(hfile, "struct %s {\n", sp->tag); + for (i = sp->nfields, fp = sp->field ; --i >= 0 ; fp++) { + fprintf(hfile, " %s;\n", fp->decl); + } + fputs("};\n\n\n", hfile); + } + fputs("union node {\n", hfile); + fprintf(hfile, " int type;\n"); + for (sp = str ; sp < &str[nstr] ; sp++) { + fprintf(hfile, " struct %s %s;\n", sp->tag, sp->tag); + } + fputs("};\n\n\n", hfile); + fputs("struct nodelist {\n", hfile); + fputs("\tstruct nodelist *next;\n", hfile); + fputs("\tunion node *n;\n", hfile); + fputs("};\n\n\n", hfile); + fputs("struct funcnode {\n", hfile); + fputs("\tint count;\n", hfile); + fputs("\tunion node n;\n", hfile); + fputs("};\n\n\n", hfile); + fputs("struct funcnode *copyfunc(union node *);\n", hfile); + fputs("void freefunc(struct funcnode *);\n", hfile); + + fputs(writer, cfile); + while (fgets(line, sizeof line, patfile) != NULL) { + for (p = line ; *p == ' ' || *p == '\t' ; p++); + if (strcmp(p, "%SIZES\n") == 0) + outsizes(cfile); + else if (strcmp(p, "%CALCSIZE\n") == 0) + outfunc(cfile, 1); + else if (strcmp(p, "%COPY\n") == 0) + outfunc(cfile, 0); + else + fputs(line, cfile); + } +} + + + +static void +outsizes(FILE *cfile) +{ + int i; + + fprintf(cfile, "static const short nodesize[%d] = {\n", ntypes); + for (i = 0 ; i < ntypes ; i++) { + fprintf(cfile, " SHELL_ALIGN(sizeof (struct %s)),\n", + nodestr[i]->tag); + } + fprintf(cfile, "};\n"); +} + + +static void +outfunc(FILE *cfile, int calcsize) +{ + struct str *sp; + struct field *fp; + int i; + + fputs(" if (n == NULL)\n", cfile); + if (calcsize) + fputs(" return;\n", cfile); + else + fputs(" return NULL;\n", cfile); + if (calcsize) + fputs(" funcblocksize += nodesize[n->type];\n", cfile); + else { + fputs(" new = funcblock;\n", cfile); + fputs(" funcblock = (char *) funcblock + nodesize[n->type];\n", cfile); + } + fputs(" switch (n->type) {\n", cfile); + for (sp = str ; sp < &str[nstr] ; sp++) { + for (i = 0 ; i < ntypes ; i++) { + if (nodestr[i] == sp) + fprintf(cfile, " case %s:\n", nodename[i]); + } + for (i = sp->nfields ; --i >= 1 ; ) { + fp = &sp->field[i]; + switch (fp->type) { + case T_NODE: + if (calcsize) { + indent(12, cfile); + fprintf(cfile, "calcsize(n->%s.%s);\n", + sp->tag, fp->name); + } else { + indent(12, cfile); + fprintf(cfile, "new->%s.%s = copynode(n->%s.%s);\n", + sp->tag, fp->name, sp->tag, fp->name); + } + break; + case T_NODELIST: + if (calcsize) { + indent(12, cfile); + fprintf(cfile, "sizenodelist(n->%s.%s);\n", + sp->tag, fp->name); + } else { + indent(12, cfile); + fprintf(cfile, "new->%s.%s = copynodelist(n->%s.%s);\n", + sp->tag, fp->name, sp->tag, fp->name); + } + break; + case T_STRING: + if (calcsize) { + indent(12, cfile); + fprintf(cfile, "funcstringsize += strlen(n->%s.%s) + 1;\n", + sp->tag, fp->name); + } else { + indent(12, cfile); + fprintf(cfile, "new->%s.%s = nodesavestr(n->%s.%s);\n", + sp->tag, fp->name, sp->tag, fp->name); + } + break; + case T_INT: + case T_OTHER: + if (! calcsize) { + indent(12, cfile); + fprintf(cfile, "new->%s.%s = n->%s.%s;\n", + sp->tag, fp->name, sp->tag, fp->name); + } + break; + } + } + indent(12, cfile); + fputs("break;\n", cfile); + } + fputs(" };\n", cfile); + if (! calcsize) + fputs(" new->type = n->type;\n", cfile); +} + + +static void +indent(int amount, FILE *fp) +{ + while (amount >= 8) { + putc('\t', fp); + amount -= 8; + } + while (--amount >= 0) { + putc(' ', fp); + } +} + + +static int +nextfield(char *buf) +{ + char *p, *q; + + p = linep; + while (*p == ' ' || *p == '\t') + p++; + q = buf; + while (*p != ' ' && *p != '\t' && *p != '\0') + *q++ = *p++; + *q = '\0'; + linep = p; + return (q > buf); +} + + +static void +skipbl(void) +{ + while (*linep == ' ' || *linep == '\t') + linep++; +} + + +static int +readline(void) +{ + char *p; + + if (fgets(line, 1024, infp) == NULL) + return 0; + for (p = line ; *p != '#' && *p != '\n' && *p != '\0' ; p++); + while (p > line && (p[-1] == ' ' || p[-1] == '\t')) + p--; + *p = '\0'; + linep = line; + linno++; + if (p - line > BUFLEN) + error("Line too long"); + return 1; +} + + + +static void +error(const char *msg, ...) +{ + va_list va; + + va_start(va, msg); + + (void) fprintf(stderr, "line %d: ", linno); + (void) vfprintf(stderr, msg, va); + (void) fputc('\n', stderr); + + va_end(va); + + exit(2); + /* NOTREACHED */ +} + + + +static char * +savestr(const char *s) +{ + char *p; + + if ((p = malloc(strlen(s) + 1)) == NULL) + error("Out of space"); + (void) strcpy(p, s); + return p; +} diff --git a/bin/dash/src/mksignames.c b/bin/dash/src/mksignames.c new file mode 100644 index 00000000..a832eab9 --- /dev/null +++ b/bin/dash/src/mksignames.c @@ -0,0 +1,417 @@ +/* signames.c -- Create and write `signames.c', which contains an array of + signal names. */ + +/* Copyright (C) 1992 Free Software Foundation, Inc. + + This file is part of GNU Bash, the Bourne Again SHell. + + Bash is free software; you can redistribute it and/or modify it under + the terms of the GNU General Public License as published by the Free + Software Foundation; either version 2, or (at your option) any later + version. + + Bash is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + for more details. + + You should have received a copy of the GNU General Public License along + with Bash; see the file COPYING. If not, write to the Free Software + Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ + +#include <stdio.h> +#include <sys/types.h> +#include <signal.h> +#include <stdlib.h> + +#if !defined (NSIG) +# define NSIG 64 +#endif + +/* + * Special traps: + * EXIT == 0 + */ +#define LASTSIG NSIG-1 + +char *signal_names[2 * NSIG + 3]; + +#define signal_names_size (sizeof(signal_names)/sizeof(signal_names[0])) + +char *progname; + +/* AIX 4.3 defines SIGRTMIN and SIGRTMAX as 888 and 999 respectively. + I don't want to allocate so much unused space for the intervening signal + numbers, so we just punt if SIGRTMAX is past the bounds of the + signal_names array (handled in configure). */ +#if defined (SIGRTMAX) && defined (UNUSABLE_RT_SIGNALS) +# undef SIGRTMAX +# undef SIGRTMIN +#endif + +#if defined (SIGRTMAX) || defined (SIGRTMIN) +# define RTLEN 14 +# define RTLIM 256 +#endif + +void +initialize_signames () +{ + register int i; +#if defined (SIGRTMAX) || defined (SIGRTMIN) + int rtmin, rtmax, rtcnt; +#endif + + for (i = 1; i < signal_names_size; i++) + signal_names[i] = (char *)NULL; + + /* `signal' 0 is what we do on exit. */ + signal_names[0] = "EXIT"; + + /* Place signal names which can be aliases for more common signal + names first. This allows (for example) SIGABRT to overwrite SIGLOST. */ + + /* POSIX 1003.1b-1993 real time signals, but take care of incomplete + implementations. Acoording to the standard, both, SIGRTMIN and + SIGRTMAX must be defined, SIGRTMIN must be stricly less than + SIGRTMAX, and the difference must be at least 7, that is, there + must be at least eight distinct real time signals. */ + + /* The generated signal names are SIGRTMIN, SIGRTMIN+1, ..., + SIGRTMIN+x, SIGRTMAX-x, ..., SIGRTMAX-1, SIGRTMAX. If the number + of RT signals is odd, there is an extra SIGRTMIN+(x+1). + These names are the ones used by ksh and /usr/xpg4/bin/sh on SunOS5. */ + +#if defined (SIGRTMIN) + rtmin = SIGRTMIN; + signal_names[rtmin] = "RTMIN"; +#endif + +#if defined (SIGRTMAX) + rtmax = SIGRTMAX; + signal_names[rtmax] = "RTMAX"; +#endif + +#if defined (SIGRTMAX) && defined (SIGRTMIN) + if (rtmax > rtmin) + { + rtcnt = (rtmax - rtmin - 1) / 2; + /* croak if there are too many RT signals */ + if (rtcnt >= RTLIM/2) + { + rtcnt = RTLIM/2-1; + fprintf(stderr, "%s: error: more than %i real time signals, fix `%s'\n", + progname, RTLIM, progname); + } + + for (i = 1; i <= rtcnt; i++) + { + signal_names[rtmin+i] = (char *)malloc(RTLEN); + if (signal_names[rtmin+i]) + sprintf (signal_names[rtmin+i], "RTMIN+%d", i); + signal_names[rtmax-i] = (char *)malloc(RTLEN); + if (signal_names[rtmax-i]) + sprintf (signal_names[rtmax-i], "RTMAX-%d", i); + } + + if (rtcnt < RTLIM/2-1 && rtcnt != (rtmax-rtmin)/2) + { + /* Need an extra RTMIN signal */ + signal_names[rtmin+rtcnt+1] = (char *)malloc(RTLEN); + if (signal_names[rtmin+rtcnt+1]) + sprintf (signal_names[rtmin+rtcnt+1], "RTMIN+%d", rtcnt+1); + } + } +#endif /* SIGRTMIN && SIGRTMAX */ + +/* AIX */ +#if defined (SIGLOST) /* resource lost (eg, record-lock lost) */ + signal_names[SIGLOST] = "LOST"; +#endif + +#if defined (SIGMSG) /* HFT input data pending */ + signal_names[SIGMSG] = "MSG"; +#endif + +#if defined (SIGDANGER) /* system crash imminent */ + signal_names[SIGDANGER] = "DANGER"; +#endif + +#if defined (SIGMIGRATE) /* migrate process to another CPU */ + signal_names[SIGMIGRATE] = "MIGRATE"; +#endif + +#if defined (SIGPRE) /* programming error */ + signal_names[SIGPRE] = "PRE"; +#endif + +#if defined (SIGVIRT) /* AIX virtual time alarm */ + signal_names[SIGVIRT] = "VIRT"; +#endif + +#if defined (SIGALRM1) /* m:n condition variables */ + signal_names[SIGALRM1] = "ALRM1"; +#endif + +#if defined (SIGWAITING) /* m:n scheduling */ + signal_names[SIGWAITING] = "WAITING"; +#endif + +#if defined (SIGGRANT) /* HFT monitor mode granted */ + signal_names[SIGGRANT] = "GRANT"; +#endif + +#if defined (SIGKAP) /* keep alive poll from native keyboard */ + signal_names[SIGKAP] = "KAP"; +#endif + +#if defined (SIGRETRACT) /* HFT monitor mode retracted */ + signal_names[SIGRETRACT] = "RETRACT"; +#endif + +#if defined (SIGSOUND) /* HFT sound sequence has completed */ + signal_names[SIGSOUND] = "SOUND"; +#endif + +#if defined (SIGSAK) /* Secure Attention Key */ + signal_names[SIGSAK] = "SAK"; +#endif + +/* SunOS5 */ +#if defined (SIGLWP) /* special signal used by thread library */ + signal_names[SIGLWP] = "LWP"; +#endif + +#if defined (SIGFREEZE) /* special signal used by CPR */ + signal_names[SIGFREEZE] = "FREEZE"; +#endif + +#if defined (SIGTHAW) /* special signal used by CPR */ + signal_names[SIGTHAW] = "THAW"; +#endif + +#if defined (SIGCANCEL) /* thread cancellation signal used by libthread */ + signal_names[SIGCANCEL] = "CANCEL"; +#endif + +/* HP-UX */ +#if defined (SIGDIL) /* DIL signal (?) */ + signal_names[SIGDIL] = "DIL"; +#endif + +/* System V */ +#if defined (SIGCLD) /* Like SIGCHLD. */ + signal_names[SIGCLD] = "CLD"; +#endif + +#if defined (SIGPWR) /* power state indication */ + signal_names[SIGPWR] = "PWR"; +#endif + +#if defined (SIGPOLL) /* Pollable event (for streams) */ + signal_names[SIGPOLL] = "POLL"; +#endif + +/* Unknown */ +#if defined (SIGWINDOW) + signal_names[SIGWINDOW] = "WINDOW"; +#endif + +/* Common */ +#if defined (SIGHUP) /* hangup */ + signal_names[SIGHUP] = "HUP"; +#endif + +#if defined (SIGINT) /* interrupt */ + signal_names[SIGINT] = "INT"; +#endif + +#if defined (SIGQUIT) /* quit */ + signal_names[SIGQUIT] = "QUIT"; +#endif + +#if defined (SIGILL) /* illegal instruction (not reset when caught) */ + signal_names[SIGILL] = "ILL"; +#endif + +#if defined (SIGTRAP) /* trace trap (not reset when caught) */ + signal_names[SIGTRAP] = "TRAP"; +#endif + +#if defined (SIGIOT) /* IOT instruction */ + signal_names[SIGIOT] = "IOT"; +#endif + +#if defined (SIGABRT) /* Cause current process to dump core. */ + signal_names[SIGABRT] = "ABRT"; +#endif + +#if defined (SIGEMT) /* EMT instruction */ + signal_names[SIGEMT] = "EMT"; +#endif + +#if defined (SIGFPE) /* floating point exception */ + signal_names[SIGFPE] = "FPE"; +#endif + +#if defined (SIGKILL) /* kill (cannot be caught or ignored) */ + signal_names[SIGKILL] = "KILL"; +#endif + +#if defined (SIGBUS) /* bus error */ + signal_names[SIGBUS] = "BUS"; +#endif + +#if defined (SIGSEGV) /* segmentation violation */ + signal_names[SIGSEGV] = "SEGV"; +#endif + +#if defined (SIGSYS) /* bad argument to system call */ + signal_names[SIGSYS] = "SYS"; +#endif + +#if defined (SIGPIPE) /* write on a pipe with no one to read it */ + signal_names[SIGPIPE] = "PIPE"; +#endif + +#if defined (SIGALRM) /* alarm clock */ + signal_names[SIGALRM] = "ALRM"; +#endif + +#if defined (SIGTERM) /* software termination signal from kill */ + signal_names[SIGTERM] = "TERM"; +#endif + +#if defined (SIGURG) /* urgent condition on IO channel */ + signal_names[SIGURG] = "URG"; +#endif + +#if defined (SIGSTOP) /* sendable stop signal not from tty */ + signal_names[SIGSTOP] = "STOP"; +#endif + +#if defined (SIGTSTP) /* stop signal from tty */ + signal_names[SIGTSTP] = "TSTP"; +#endif + +#if defined (SIGCONT) /* continue a stopped process */ + signal_names[SIGCONT] = "CONT"; +#endif + +#if defined (SIGCHLD) /* to parent on child stop or exit */ + signal_names[SIGCHLD] = "CHLD"; +#endif + +#if defined (SIGTTIN) /* to readers pgrp upon background tty read */ + signal_names[SIGTTIN] = "TTIN"; +#endif + +#if defined (SIGTTOU) /* like TTIN for output if (tp->t_local<OSTOP) */ + signal_names[SIGTTOU] = "TTOU"; +#endif + +#if defined (SIGIO) /* input/output possible signal */ + signal_names[SIGIO] = "IO"; +#endif + +#if defined (SIGXCPU) /* exceeded CPU time limit */ + signal_names[SIGXCPU] = "XCPU"; +#endif + +#if defined (SIGXFSZ) /* exceeded file size limit */ + signal_names[SIGXFSZ] = "XFSZ"; +#endif + +#if defined (SIGVTALRM) /* virtual time alarm */ + signal_names[SIGVTALRM] = "VTALRM"; +#endif + +#if defined (SIGPROF) /* profiling time alarm */ + signal_names[SIGPROF] = "PROF"; +#endif + +#if defined (SIGWINCH) /* window changed */ + signal_names[SIGWINCH] = "WINCH"; +#endif + +/* 4.4 BSD */ +#if defined (SIGINFO) && !defined (_SEQUENT_) /* information request */ + signal_names[SIGINFO] = "INFO"; +#endif + +#if defined (SIGUSR1) /* user defined signal 1 */ + signal_names[SIGUSR1] = "USR1"; +#endif + +#if defined (SIGUSR2) /* user defined signal 2 */ + signal_names[SIGUSR2] = "USR2"; +#endif + +#if defined (SIGKILLTHR) /* BeOS: Kill Thread */ + signal_names[SIGKILLTHR] = "KILLTHR"; +#endif + + for (i = 0; i < NSIG; i++) + if (signal_names[i] == (char *)NULL) + { + signal_names[i] = (char *)malloc (18); + if (signal_names[i]) + sprintf (signal_names[i], "%d", i); + } +} + +void +write_signames (stream) + FILE *stream; +{ + register int i; + + fprintf (stream, "/* This file was automatically created by %s.\n", + progname); + fprintf (stream, " Do not edit. Edit support/mksignames.c instead. */\n\n"); + fprintf (stream, "#include <signal.h>\n\n"); + fprintf (stream, + "/* A translation list so we can be polite to our users. */\n"); + fprintf (stream, "const char *const signal_names[NSIG + 1] = {\n"); + + for (i = 0; i <= LASTSIG; i++) + fprintf (stream, " \"%s\",\n", signal_names[i]); + + fprintf (stream, " (char *)0x0\n"); + fprintf (stream, "};\n"); +} + +int +main(int argc, char **argv) +{ + char *stream_name; + FILE *stream; + + progname = argv[0]; + + if (argc == 1) + { + stream_name = "signames.c"; + } + else if (argc == 2) + { + stream_name = argv[1]; + } + else + { + fprintf (stderr, "Usage: %s [output-file]\n", progname); + exit (1); + } + + stream = fopen (stream_name, "w"); + if (!stream) + { + fprintf (stderr, "%s: %s: cannot open for writing\n", + progname, stream_name); + exit (2); + } + + initialize_signames (); + write_signames (stream); + exit (0); +} diff --git a/bin/dash/src/mksyntax.c b/bin/dash/src/mksyntax.c new file mode 100644 index 00000000..a23c18ca --- /dev/null +++ b/bin/dash/src/mksyntax.c @@ -0,0 +1,315 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * This program creates syntax.h and syntax.c. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include "parser.h" + + +struct synclass { + char *name; + char *comment; +}; + +/* Syntax classes */ +struct synclass synclass[] = { + { "CWORD", "character is nothing special" }, + { "CNL", "newline character" }, + { "CBACK", "a backslash character" }, + { "CSQUOTE", "single quote" }, + { "CDQUOTE", "double quote" }, + { "CENDQUOTE", "a terminating quote" }, + { "CBQUOTE", "backwards single quote" }, + { "CVAR", "a dollar sign" }, + { "CENDVAR", "a '}' character" }, + { "CLP", "a left paren in arithmetic" }, + { "CRP", "a right paren in arithmetic" }, + { "CEOF", "end of file" }, + { "CCTL", "like CWORD, except it must be escaped" }, + { "CSPCL", "these terminate a word" }, + { "CIGN", "character should be ignored" }, + { NULL, NULL } +}; + + +/* + * Syntax classes for is_ functions. Warning: if you add new classes + * you may have to change the definition of the is_in_name macro. + */ +struct synclass is_entry[] = { + { "ISDIGIT", "a digit" }, + { "ISUPPER", "an upper case letter" }, + { "ISLOWER", "a lower case letter" }, + { "ISUNDER", "an underscore" }, + { "ISSPECL", "the name of a special parameter" }, + { NULL, NULL } +}; + +static char writer[] = "\ +/*\n\ + * This file was generated by the mksyntax program.\n\ + */\n\ +\n"; + + +static FILE *cfile; +static FILE *hfile; +static char *syntax[513]; + +static void filltable(char *); +static void init(void); +static void add(char *, char *); +static void print(char *); +static void output_type_macros(void); +int main(int, char **); + +int +main(int argc, char **argv) +{ + int i; + char buf[80]; + int pos; + + /* Create output files */ + if ((cfile = fopen("syntax.c", "w")) == NULL) { + perror("syntax.c"); + exit(2); + } + if ((hfile = fopen("syntax.h", "w")) == NULL) { + perror("syntax.h"); + exit(2); + } + fputs(writer, hfile); + fputs(writer, cfile); + + fputs("#include <ctype.h>\n", hfile); + fputs("\n", hfile); + fputs("#ifdef CEOF\n", hfile); + fputs("#undef CEOF\n", hfile); + fputs("#endif\n", hfile); + fputs("\n", hfile); + + /* Generate the #define statements in the header file */ + fputs("/* Syntax classes */\n", hfile); + for (i = 0 ; synclass[i].name ; i++) { + sprintf(buf, "#define %s %d", synclass[i].name, i); + fputs(buf, hfile); + for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07) + putc('\t', hfile); + fprintf(hfile, "/* %s */\n", synclass[i].comment); + } + putc('\n', hfile); + fputs("/* Syntax classes for is_ functions */\n", hfile); + for (i = 0 ; is_entry[i].name ; i++) { + sprintf(buf, "#define %s %#o", is_entry[i].name, 1 << i); + fputs(buf, hfile); + for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07) + putc('\t', hfile); + fprintf(hfile, "/* %s */\n", is_entry[i].comment); + } + putc('\n', hfile); + fprintf(hfile, "#define SYNBASE %d\n", 130); + fprintf(hfile, "#define PEOF %d\n\n", -130); + fprintf(hfile, "#define PEOA %d\n\n", -129); + putc('\n', hfile); + fputs("#define BASESYNTAX (basesyntax + SYNBASE)\n", hfile); + fputs("#define DQSYNTAX (dqsyntax + SYNBASE)\n", hfile); + fputs("#define SQSYNTAX (sqsyntax + SYNBASE)\n", hfile); + fputs("#define ARISYNTAX (arisyntax + SYNBASE)\n", hfile); + putc('\n', hfile); + output_type_macros(); /* is_digit, etc. */ + putc('\n', hfile); + + /* Generate the syntax tables. */ + fputs("#include \"shell.h\"\n", cfile); + fputs("#include \"syntax.h\"\n\n", cfile); + init(); + fputs("/* syntax table used when not in quotes */\n", cfile); + add("\n", "CNL"); + add("\\", "CBACK"); + add("'", "CSQUOTE"); + add("\"", "CDQUOTE"); + add("`", "CBQUOTE"); + add("$", "CVAR"); + add("}", "CENDVAR"); + add("<>();&| \t", "CSPCL"); + syntax[1] = "CSPCL"; + print("basesyntax"); + init(); + fputs("\n/* syntax table used when in double quotes */\n", cfile); + add("\n", "CNL"); + add("\\", "CBACK"); + add("\"", "CENDQUOTE"); + add("`", "CBQUOTE"); + add("$", "CVAR"); + add("}", "CENDVAR"); + /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */ + add("!*?[=~:/-]", "CCTL"); + print("dqsyntax"); + init(); + fputs("\n/* syntax table used when in single quotes */\n", cfile); + add("\n", "CNL"); + add("'", "CENDQUOTE"); + /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */ + add("!*?[=~:/-]\\", "CCTL"); + print("sqsyntax"); + init(); + fputs("\n/* syntax table used when in arithmetic */\n", cfile); + add("\n", "CNL"); + add("\\", "CBACK"); + add("`", "CBQUOTE"); + add("$", "CVAR"); + add("}", "CENDVAR"); + add("(", "CLP"); + add(")", "CRP"); + print("arisyntax"); + filltable("0"); + fputs("\n/* character classification table */\n", cfile); + add("0123456789", "ISDIGIT"); + add("abcdefghijklmnopqrstucvwxyz", "ISLOWER"); + add("ABCDEFGHIJKLMNOPQRSTUCVWXYZ", "ISUPPER"); + add("_", "ISUNDER"); + add("#?$!-*@", "ISSPECL"); + print("is_type"); + exit(0); + /* NOTREACHED */ +} + + + +/* + * Clear the syntax table. + */ + +static void +filltable(char *dftval) +{ + int i; + + for (i = 0 ; i < 258; i++) + syntax[i] = dftval; +} + + +/* + * Initialize the syntax table with default values. + */ + +static void +init(void) +{ + int ctl; + + filltable("CWORD"); + syntax[0] = "CEOF"; + syntax[1] = "CIGN"; + for (ctl = CTL_FIRST; ctl <= CTL_LAST; ctl++ ) + syntax[130 + ctl] = "CCTL"; +} + + +/* + * Add entries to the syntax table. + */ + +static void +add(char *p, char *type) +{ + while (*p) + syntax[(signed char)*p++ + 130] = type; +} + + + +/* + * Output the syntax table. + */ + +static void +print(char *name) +{ + int i; + int col; + + fprintf(hfile, "extern const char %s[];\n", name); + fprintf(cfile, "const char %s[] = {\n", name); + col = 0; + for (i = 0 ; i < 258; i++) { + if (i == 0) { + fputs(" ", cfile); + } else if ((i & 03) == 0) { + fputs(",\n ", cfile); + col = 0; + } else { + putc(',', cfile); + while (++col < 9 * (i & 03)) + putc(' ', cfile); + } + fputs(syntax[i], cfile); + col += strlen(syntax[i]); + } + fputs("\n};\n", cfile); +} + + + +/* + * Output character classification macros (e.g. is_digit). If digits are + * contiguous, we can test for them quickly. + */ + +static char *macro[] = { + "#define is_digit(c)\t((unsigned)((c) - '0') <= 9)\n", + "#define is_alpha(c)\tisalpha((unsigned char)(c))\n", + "#define is_name(c)\t((c) == '_' || isalpha((unsigned char)(c)))\n", + "#define is_in_name(c)\t((c) == '_' || isalnum((unsigned char)(c)))\n", + "#define is_special(c)\t((is_type+SYNBASE)[(signed char)(c)] & (ISSPECL|ISDIGIT))\n", + NULL +}; + +static void +output_type_macros(void) +{ + char **pp; + + for (pp = macro ; *pp ; pp++) + fputs(*pp, hfile); + fputs("#define digit_val(c)\t((c) - '0')\n", hfile); +} diff --git a/bin/dash/src/mktokens b/bin/dash/src/mktokens new file mode 100644 index 00000000..78055be8 --- /dev/null +++ b/bin/dash/src/mktokens @@ -0,0 +1,97 @@ +#!/bin/sh - +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)mktokens 8.1 (Berkeley) 5/31/93 + +# The following is a list of tokens. The second column is nonzero if the +# token marks the end of a list. The third column is the name to print in +# error messages. + +: "${TMPDIR:=/tmp}" + +cat > "${TMPDIR}"/ka$$ <<\! +TEOF 1 end of file +TNL 0 newline +TSEMI 0 ";" +TBACKGND 0 "&" +TAND 0 "&&" +TOR 0 "||" +TPIPE 0 "|" +TLP 0 "(" +TRP 1 ")" +TENDCASE 1 ";;" +TENDBQUOTE 1 "`" +TREDIR 0 redirection +TWORD 0 word +TNOT 0 "!" +TCASE 0 "case" +TDO 1 "do" +TDONE 1 "done" +TELIF 1 "elif" +TELSE 1 "else" +TESAC 1 "esac" +TFI 1 "fi" +TFOR 0 "for" +TIF 0 "if" +TIN 0 "in" +TTHEN 1 "then" +TUNTIL 0 "until" +TWHILE 0 "while" +TBEGIN 0 "{" +TEND 1 "}" +! +nl=`wc -l "${TMPDIR}"/ka$$` +exec > token.h +awk '{print "#define " $1 " " NR-1}' "${TMPDIR}"/ka$$ + +exec > token_vars.h + +echo ' +/* Array indicating which tokens mark the end of a list */ +static const char tokendlist[] = {' +awk '{print "\t" $2 ","}' "${TMPDIR}"/ka$$ +echo '}; + +static const char *const tokname[] = {' +sed -e 's/"/\\"/g' \ + -e 's/[^ ]*[ ][ ]*[^ ]*[ ][ ]*\(.*\)/ "\1",/' \ + "${TMPDIR}"/ka$$ +echo '}; +' +sed 's/"//g' "${TMPDIR}"/ka$$ | awk ' +/TNOT/{print "#define KWDOFFSET " NR-1; print ""; + print "static const char *const parsekwd[] = {"} +/TNOT/,/neverfound/{if (last) print " \"" last "\","; last = $3} +END{print " \"" last "\"\n};"}' + +rm "${TMPDIR}"/ka$$ diff --git a/bin/dash/src/myhistedit.h b/bin/dash/src/myhistedit.h new file mode 100644 index 00000000..22e5c438 --- /dev/null +++ b/bin/dash/src/myhistedit.h @@ -0,0 +1,46 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)myhistedit.h 8.2 (Berkeley) 5/4/95 + */ + +#include <histedit.h> + +extern History *hist; +extern EditLine *el; +extern int displayhist; + +void histedit(void); +void sethistsize(const char *); +void setterm(const char *); +int histcmd(int, char **); +int not_fcnumber(char *); +int str_to_event(const char *, int); + diff --git a/bin/dash/src/mystring.c b/bin/dash/src/mystring.c new file mode 100644 index 00000000..de624b89 --- /dev/null +++ b/bin/dash/src/mystring.c @@ -0,0 +1,257 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * String functions. + * + * equal(s1, s2) Return true if strings are equal. + * scopy(from, to) Copy a string. + * scopyn(from, to, n) Like scopy, but checks for overflow. + * number(s) Convert a string of digits to an integer. + * is_number(s) Return true if s is a string of digits. + */ + +#include <ctype.h> +#include <errno.h> +#include <inttypes.h> +#include <limits.h> +#include <inttypes.h> +#include <stdlib.h> +#include "shell.h" +#include "syntax.h" +#include "error.h" +#include "mystring.h" +#include "memalloc.h" +#include "parser.h" +#include "system.h" + + +char nullstr[1]; /* zero length string */ +const char spcstr[] = " "; +const char snlfmt[] = "%s\n"; +const char dolatstr[] = { CTLQUOTEMARK, CTLVAR, VSNORMAL, '@', '=', + CTLQUOTEMARK, '\0' }; +const char qchars[] = { CTLESC, CTLQUOTEMARK, 0 }; +const char illnum[] = "Illegal number: %s"; +const char homestr[] = "HOME"; + +/* + * equal - #defined in mystring.h + */ + +/* + * scopy - #defined in mystring.h + */ + + +#if 0 +/* + * scopyn - copy a string from "from" to "to", truncating the string + * if necessary. "To" is always nul terminated, even if + * truncation is performed. "Size" is the size of "to". + */ + +void +scopyn(const char *from, char *to, int size) +{ + + while (--size > 0) { + if ((*to++ = *from++) == '\0') + return; + } + *to = '\0'; +} +#endif + + +/* + * prefix -- see if pfx is a prefix of string. + */ + +char * +prefix(const char *string, const char *pfx) +{ + while (*pfx) { + if (*pfx++ != *string++) + return 0; + } + return (char *) string; +} + +void badnum(const char *s) +{ + sh_error(illnum, s); +} + +/* + * Convert a string into an integer of type intmax_t. Alow trailing spaces. + */ +intmax_t atomax(const char *s, int base) +{ + char *p; + intmax_t r; + + errno = 0; + r = strtoimax(s, &p, base); + + if (errno == ERANGE) + badnum(s); + + /* + * Disallow completely blank strings in non-arithmetic (base != 0) + * contexts. + */ + if (p == s && base) + badnum(s); + + while (isspace((unsigned char)*p)) + p++; + + if (*p) + badnum(s); + + return r; +} + +intmax_t atomax10(const char *s) +{ + return atomax(s, 10); +} + +/* + * Convert a string of digits to an integer, printing an error message on + * failure. + */ + +int +number(const char *s) +{ + intmax_t n = atomax10(s); + + if (n < 0 || n > INT_MAX) + badnum(s); + + return n; +} + + + +/* + * Check for a valid number. This should be elsewhere. + */ + +int +is_number(const char *p) +{ + do { + if (! is_digit(*p)) + return 0; + } while (*++p != '\0'); + return 1; +} + + +/* + * Produce a possibly single quoted string suitable as input to the shell. + * The return string is allocated on the stack. + */ + +char * +single_quote(const char *s) { + char *p; + + STARTSTACKSTR(p); + + do { + char *q; + size_t len; + + len = strchrnul(s, '\'') - s; + + q = p = makestrspace(len + 3, p); + + *q++ = '\''; + q = mempcpy(q, s, len); + *q++ = '\''; + s += len; + + STADJUST(q - p, p); + + len = strspn(s, "'"); + if (!len) + break; + + q = p = makestrspace(len + 3, p); + + *q++ = '"'; + q = mempcpy(q, s, len); + *q++ = '"'; + s += len; + + STADJUST(q - p, p); + } while (*s); + + USTPUTC(0, p); + + return stackblock(); +} + +/* + * Like strdup but works with the ash stack. + */ + +char * +sstrdup(const char *p) +{ + size_t len = strlen(p) + 1; + return memcpy(stalloc(len), p, len); +} + +/* + * Wrapper around strcmp for qsort/bsearch/... + */ +int +pstrcmp(const void *a, const void *b) +{ + return strcmp(*(const char *const *) a, *(const char *const *) b); +} + +/* + * Find a string is in a sorted array. + */ +const char *const * +findstring(const char *s, const char *const *array, size_t nmemb) +{ + return bsearch(&s, array, nmemb, sizeof(const char *), pstrcmp); +} diff --git a/bin/dash/src/mystring.h b/bin/dash/src/mystring.h new file mode 100644 index 00000000..083ea98c --- /dev/null +++ b/bin/dash/src/mystring.h @@ -0,0 +1,63 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)mystring.h 8.2 (Berkeley) 5/4/95 + */ + +#include <inttypes.h> +#include <string.h> + +extern const char snlfmt[]; +extern const char spcstr[]; +extern const char dolatstr[]; +#define DOLATSTRLEN 6 +extern const char qchars[]; +extern const char illnum[]; +extern const char homestr[]; + +#if 0 +void scopyn(const char *, char *, int); +#endif +char *prefix(const char *, const char *); +void badnum(const char *s) __attribute__ ((noreturn)); +intmax_t atomax(const char *, int); +intmax_t atomax10(const char *); +int number(const char *); +int is_number(const char *); +char *single_quote(const char *); +char *sstrdup(const char *); +int pstrcmp(const void *, const void *); +const char *const *findstring(const char *, const char *const *, size_t); + +#define equal(s1, s2) (strcmp(s1, s2) == 0) +#define scopy(s1, s2) ((void)strcpy(s2, s1)) diff --git a/bin/dash/src/nodes.c.pat b/bin/dash/src/nodes.c.pat new file mode 100644 index 00000000..9125bc73 --- /dev/null +++ b/bin/dash/src/nodes.c.pat @@ -0,0 +1,166 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)nodes.c.pat 8.2 (Berkeley) 5/4/95 + */ + +#include <stdlib.h> +/* + * Routine for dealing with parsed shell commands. + */ + +#include "shell.h" +#include "nodes.h" +#include "memalloc.h" +#include "machdep.h" +#include "mystring.h" +#include "system.h" + + +int funcblocksize; /* size of structures in function */ +int funcstringsize; /* size of strings in node */ +pointer funcblock; /* block to allocate function from */ +char *funcstring; /* block to allocate strings from */ + +%SIZES + + +STATIC void calcsize(union node *); +STATIC void sizenodelist(struct nodelist *); +STATIC union node *copynode(union node *); +STATIC struct nodelist *copynodelist(struct nodelist *); +STATIC char *nodesavestr(char *); + + + +/* + * Make a copy of a parse tree. + */ + +struct funcnode * +copyfunc(union node *n) +{ + struct funcnode *f; + size_t blocksize; + + funcblocksize = offsetof(struct funcnode, n); + funcstringsize = 0; + calcsize(n); + blocksize = funcblocksize; + f = ckmalloc(blocksize + funcstringsize); + funcblock = (char *) f + offsetof(struct funcnode, n); + funcstring = (char *) f + blocksize; + copynode(n); + f->count = 0; + return f; +} + + + +STATIC void +calcsize(n) + union node *n; +{ + %CALCSIZE +} + + + +STATIC void +sizenodelist(lp) + struct nodelist *lp; +{ + while (lp) { + funcblocksize += SHELL_ALIGN(sizeof(struct nodelist)); + calcsize(lp->n); + lp = lp->next; + } +} + + + +STATIC union node * +copynode(n) + union node *n; +{ + union node *new; + + %COPY + return new; +} + + +STATIC struct nodelist * +copynodelist(lp) + struct nodelist *lp; +{ + struct nodelist *start; + struct nodelist **lpp; + + lpp = &start; + while (lp) { + *lpp = funcblock; + funcblock = (char *) funcblock + + SHELL_ALIGN(sizeof(struct nodelist)); + (*lpp)->n = copynode(lp->n); + lp = lp->next; + lpp = &(*lpp)->next; + } + *lpp = NULL; + return start; +} + + + +STATIC char * +nodesavestr(s) + char *s; +{ + char *rtn = funcstring; + + funcstring = stpcpy(funcstring, s) + 1; + return rtn; +} + + + +/* + * Free a parse tree. + */ + +void +freefunc(struct funcnode *f) +{ + if (f && --f->count < 0) + ckfree(f); +} diff --git a/bin/dash/src/nodetypes b/bin/dash/src/nodetypes new file mode 100644 index 00000000..ceaf478c --- /dev/null +++ b/bin/dash/src/nodetypes @@ -0,0 +1,151 @@ +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)nodetypes 8.2 (Berkeley) 5/4/95 + +# This file describes the nodes used in parse trees. Unindented lines +# contain a node type followed by a structure tag. Subsequent indented +# lines specify the fields of the structure. Several node types can share +# the same structure, in which case the fields of the structure should be +# specified only once. +# +# A field of a structure is described by the name of the field followed +# by a type. The currently implemented types are: +# nodeptr - a pointer to a node +# nodelist - a pointer to a list of nodes +# string - a pointer to a nul terminated string +# int - an integer +# other - any type that can be copied by assignment +# temp - a field that doesn't have to be copied when the node is copied +# The last two types should be followed by the text of a C declaration for +# the field. + +NCMD ncmd # a simple command + type int + linno int + assign nodeptr # variable assignments + args nodeptr # the arguments + redirect nodeptr # list of file redirections + +NPIPE npipe # a pipeline + type int + backgnd int # set to run pipeline in background + cmdlist nodelist # the commands in the pipeline + +NREDIR nredir # redirection (of a complex command) + type int + linno int + n nodeptr # the command + redirect nodeptr # list of file redirections + +NBACKGND nredir # run command in background +NSUBSHELL nredir # run command in a subshell + +NAND nbinary # the && operator +NOR nbinary # the || operator + +NSEMI nbinary # two commands separated by a semicolon + type int + ch1 nodeptr # the first child + ch2 nodeptr # the second child + +NIF nif # the if statement. Elif clauses are handled + type int # using multiple if nodes. + test nodeptr # if test + ifpart nodeptr # then ifpart + elsepart nodeptr # else elsepart + +NWHILE nbinary # the while statement. First child is the test +NUNTIL nbinary # the until statement + +NFOR nfor # the for statement + type int + linno int + args nodeptr # for var in args + body nodeptr # do body; done + var string # the for variable + +NCASE ncase # a case statement + type int + linno int + expr nodeptr # the word to switch on + cases nodeptr # the list of cases (NCLIST nodes) + +NCLIST nclist # a case + type int + next nodeptr # the next case in list + pattern nodeptr # list of patterns for this case + body nodeptr # code to execute for this case + + +NDEFUN ndefun # a function + type int + linno int + text string + body nodeptr + +NARG narg # represents a word + type int + next nodeptr # next word in list + text string # the text of the word + backquote nodelist # list of commands in back quotes + +NTO nfile # fd> fname +NCLOBBER nfile # fd>| fname +NFROM nfile # fd< fname +NFROMTO nfile # fd<> fname +NAPPEND nfile # fd>> fname + type int + next nodeptr # next redirection in list + fd int # file descriptor being redirected + fname nodeptr # file name, in a NARG node + expfname temp char *expfname # actual file name + +NTOFD ndup # fd<&dupfd +NFROMFD ndup # fd>&dupfd + type int + next nodeptr # next redirection in list + fd int # file descriptor being redirected + dupfd int # file descriptor to duplicate + vname nodeptr # file name if fd>&$var + + +NHERE nhere # fd<<\! +NXHERE nhere # fd<<! + type int + next nodeptr # next redirection in list + fd int # file descriptor being redirected + doc nodeptr # input to command (NARG node) + +NNOT nnot # ! command (actually pipeline) + type int + com nodeptr diff --git a/bin/dash/src/options.c b/bin/dash/src/options.c new file mode 100644 index 00000000..a46c23b9 --- /dev/null +++ b/bin/dash/src/options.c @@ -0,0 +1,558 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <signal.h> +#include <unistd.h> +#include <stdlib.h> + +#include "shell.h" +#define DEFINE_OPTIONS +#include "options.h" +#undef DEFINE_OPTIONS +#include "nodes.h" /* for other header files */ +#include "eval.h" +#include "jobs.h" +#include "input.h" +#include "output.h" +#include "trap.h" +#include "var.h" +#include "memalloc.h" +#include "error.h" +#include "mystring.h" +#ifndef SMALL +#include "myhistedit.h" +#endif +#include "show.h" + +char *arg0; /* value of $0 */ +struct shparam shellparam; /* current positional parameters */ +char **argptr; /* argument list for builtin commands */ +char *optionarg; /* set by nextopt (like getopt) */ +char *optptr; /* used by nextopt */ + +char *minusc; /* argument to -c option */ + +static const char *const optnames[NOPTS] = { + "errexit", + "noglob", + "ignoreeof", + "interactive", + "monitor", + "noexec", + "stdin", + "xtrace", + "verbose", + "vi", + "emacs", + "noclobber", + "allexport", + "notify", + "nounset", + "nolog", + "debug", +}; + +const char optletters[NOPTS] = { + 'e', + 'f', + 'I', + 'i', + 'm', + 'n', + 's', + 'x', + 'v', + 'V', + 'E', + 'C', + 'a', + 'b', + 'u', + 0, + 0, +}; + +char optlist[NOPTS]; + + +static int options(int); +STATIC void minus_o(char *, int); +STATIC void setoption(int, int); +STATIC int getopts(char *, char *, char **); + + +/* + * Process the shell command line arguments. + */ + +int +procargs(int argc, char **argv) +{ + int i; + const char *xminusc; + char **xargv; + int login; + + xargv = argv; + login = xargv[0] && xargv[0][0] == '-'; + arg0 = xargv[0]; + if (argc > 0) + xargv++; + for (i = 0; i < NOPTS; i++) + optlist[i] = 2; + argptr = xargv; + login |= options(1); + xargv = argptr; + xminusc = minusc; + if (*xargv == NULL) { + if (xminusc) + sh_error("-c requires an argument"); + sflag = 1; + } + if (iflag == 2 && sflag == 1 && isatty(0) && isatty(1)) + iflag = 1; + if (mflag == 2) + mflag = iflag; + for (i = 0; i < NOPTS; i++) + if (optlist[i] == 2) + optlist[i] = 0; +#if DEBUG == 2 + debug = 1; +#endif + /* POSIX 1003.2: first arg after -c cmd is $0, remainder $1... */ + if (xminusc) { + minusc = *xargv++; + if (*xargv) + goto setarg0; + } else if (!sflag) { + setinputfile(*xargv, 0); +setarg0: + arg0 = *xargv++; + } + + shellparam.p = xargv; + shellparam.optind = 1; + shellparam.optoff = -1; + /* assert(shellparam.malloc == 0 && shellparam.nparam == 0); */ + while (*xargv) { + shellparam.nparam++; + xargv++; + } + optschanged(); + + return login; +} + + +void +optschanged(void) +{ +#ifdef DEBUG + opentrace(); +#endif + setinteractive(iflag); +#ifndef SMALL + histedit(); +#endif + setjobctl(mflag); +} + +/* + * Process shell options. The global variable argptr contains a pointer + * to the argument list; we advance it past the options. + */ + +STATIC int +options(int cmdline) +{ + char *p; + int val; + int c; + int login = 0; + + if (cmdline) + minusc = NULL; + while ((p = *argptr) != NULL) { + argptr++; + if ((c = *p++) == '-') { + val = 1; + if (p[0] == '\0' || (p[0] == '-' && p[1] == '\0')) { + if (!cmdline) { + /* "-" means turn off -x and -v */ + if (p[0] == '\0') + xflag = vflag = 0; + /* "--" means reset params */ + else if (*argptr == NULL) + setparam(argptr); + } + break; /* "-" or "--" terminates options */ + } + } else if (c == '+') { + val = 0; + } else { + argptr--; + break; + } + while ((c = *p++) != '\0') { + if (c == 'c' && cmdline) { + minusc = p; /* command is after shell args*/ + } else if (c == 'l' && cmdline) { + login = 1; + } else if (c == 'o') { + minus_o(*argptr, val); + if (*argptr) + argptr++; + } else { + setoption(c, val); + } + } + } + + return login; +} + +STATIC void +minus_o(char *name, int val) +{ + int i; + + if (name == NULL) { + if (val) { + out1str("Current option settings\n"); + for (i = 0; i < NOPTS; i++) + out1fmt("%-16s%s\n", optnames[i], + optlist[i] ? "on" : "off"); + } else { + for (i = 0; i < NOPTS; i++) + out1fmt("set %s %s\n", + optlist[i] ? "-o" : "+o", + optnames[i]); + + } + } else { + for (i = 0; i < NOPTS; i++) + if (equal(name, optnames[i])) { + optlist[i] = val; + return; + } + sh_error("Illegal option -o %s", name); + } +} + + +STATIC void +setoption(int flag, int val) +{ + int i; + + for (i = 0; i < NOPTS; i++) + if (optletters[i] == flag) { + optlist[i] = val; + if (val) { + /* #%$ hack for ksh semantics */ + if (flag == 'V') + Eflag = 0; + else if (flag == 'E') + Vflag = 0; + } + return; + } + sh_error("Illegal option -%c", flag); + /* NOTREACHED */ +} + + + +/* + * Set the shell parameters. + */ + +void +setparam(char **argv) +{ + char **newparam; + char **ap; + int nparam; + + for (nparam = 0 ; argv[nparam] ; nparam++); + ap = newparam = ckmalloc((nparam + 1) * sizeof *ap); + while (*argv) { + *ap++ = savestr(*argv++); + } + *ap = NULL; + freeparam(&shellparam); + shellparam.malloc = 1; + shellparam.nparam = nparam; + shellparam.p = newparam; + shellparam.optind = 1; + shellparam.optoff = -1; +} + + +/* + * Free the list of positional parameters. + */ + +void +freeparam(volatile struct shparam *param) +{ + char **ap; + + if (param->malloc) { + for (ap = param->p ; *ap ; ap++) + ckfree(*ap); + ckfree(param->p); + } +} + + + +/* + * The shift builtin command. + */ + +int +shiftcmd(int argc, char **argv) +{ + int n; + char **ap1, **ap2; + + n = 1; + if (argc > 1) + n = number(argv[1]); + if (n > shellparam.nparam) + sh_error("can't shift that many"); + INTOFF; + shellparam.nparam -= n; + for (ap1 = shellparam.p ; --n >= 0 ; ap1++) { + if (shellparam.malloc) + ckfree(*ap1); + } + ap2 = shellparam.p; + while ((*ap2++ = *ap1++) != NULL); + shellparam.optind = 1; + shellparam.optoff = -1; + INTON; + return 0; +} + + + +/* + * The set command builtin. + */ + +int +setcmd(int argc, char **argv) +{ + if (argc == 1) + return showvars(nullstr, 0, VUNSET); + INTOFF; + options(0); + optschanged(); + if (*argptr != NULL) { + setparam(argptr); + } + INTON; + return 0; +} + + +void +getoptsreset(value) + const char *value; +{ + shellparam.optind = number(value) ?: 1; + shellparam.optoff = -1; +} + +/* + * The getopts builtin. Shellparam.optnext points to the next argument + * to be processed. Shellparam.optptr points to the next character to + * be processed in the current argument. If shellparam.optnext is NULL, + * then it's the first time getopts has been called. + */ + +int +getoptscmd(int argc, char **argv) +{ + char **optbase; + + if (argc < 3) + sh_error("Usage: getopts optstring var [arg]"); + else if (argc == 3) { + optbase = shellparam.p; + if ((unsigned)shellparam.optind > shellparam.nparam + 1) { + shellparam.optind = 1; + shellparam.optoff = -1; + } + } + else { + optbase = &argv[3]; + if ((unsigned)shellparam.optind > argc - 2) { + shellparam.optind = 1; + shellparam.optoff = -1; + } + } + + return getopts(argv[1], argv[2], optbase); +} + +STATIC int +getopts(char *optstr, char *optvar, char **optfirst) +{ + char *p, *q; + char c = '?'; + int done = 0; + char s[2]; + char **optnext; + int ind = shellparam.optind; + int off = shellparam.optoff; + + shellparam.optind = -1; + optnext = optfirst + ind - 1; + + if (ind <= 1 || off < 0 || strlen(optnext[-1]) < off) + p = NULL; + else + p = optnext[-1] + off; + if (p == NULL || *p == '\0') { + /* Current word is done, advance */ + p = *optnext; + if (p == NULL || *p != '-' || *++p == '\0') { +atend: + p = NULL; + done = 1; + goto out; + } + optnext++; + if (p[0] == '-' && p[1] == '\0') /* check for "--" */ + goto atend; + } + + c = *p++; + for (q = optstr; *q != c; ) { + if (*q == '\0') { + if (optstr[0] == ':') { + s[0] = c; + s[1] = '\0'; + setvar("OPTARG", s, 0); + } else { + outfmt(&errout, "Illegal option -%c\n", c); + (void) unsetvar("OPTARG"); + } + c = '?'; + goto out; + } + if (*++q == ':') + q++; + } + + if (*++q == ':') { + if (*p == '\0' && (p = *optnext) == NULL) { + if (optstr[0] == ':') { + s[0] = c; + s[1] = '\0'; + setvar("OPTARG", s, 0); + c = ':'; + } else { + outfmt(&errout, "No arg for -%c option\n", c); + (void) unsetvar("OPTARG"); + c = '?'; + } + goto out; + } + + if (p == *optnext) + optnext++; + setvar("OPTARG", p, 0); + p = NULL; + } else + setvar("OPTARG", nullstr, 0); + +out: + ind = optnext - optfirst + 1; + setvarint("OPTIND", ind, VNOFUNC); + s[0] = c; + s[1] = '\0'; + setvar(optvar, s, 0); + + shellparam.optoff = p ? p - *(optnext - 1) : -1; + shellparam.optind = ind; + + return done; +} + +/* + * XXX - should get rid of. have all builtins use getopt(3). the + * library getopt must have the BSD extension static variable "optreset" + * otherwise it can't be used within the shell safely. + * + * Standard option processing (a la getopt) for builtin routines. The + * only argument that is passed to nextopt is the option string; the + * other arguments are unnecessary. It return the character, or '\0' on + * end of input. + */ + +int +nextopt(const char *optstring) +{ + char *p; + const char *q; + char c; + + if ((p = optptr) == NULL || *p == '\0') { + p = *argptr; + if (p == NULL || *p != '-' || *++p == '\0') + return '\0'; + argptr++; + if (p[0] == '-' && p[1] == '\0') /* check for "--" */ + return '\0'; + } + c = *p++; + for (q = optstring ; *q != c ; ) { + if (*q == '\0') + sh_error("Illegal option -%c", c); + if (*++q == ':') + q++; + } + if (*++q == ':') { + if (*p == '\0' && (p = *argptr++) == NULL) + sh_error("No arg for -%c option", c); + optionarg = p; + p = NULL; + } + optptr = p; + return c; +} diff --git a/bin/dash/src/options.h b/bin/dash/src/options.h new file mode 100644 index 00000000..975fe339 --- /dev/null +++ b/bin/dash/src/options.h @@ -0,0 +1,86 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)options.h 8.2 (Berkeley) 5/4/95 + */ + +struct shparam { + int nparam; /* # of positional parameters (without $0) */ + unsigned char malloc; /* if parameter list dynamically allocated */ + char **p; /* parameter list */ + int optind; /* next parameter to be processed by getopts */ + int optoff; /* used by getopts */ +}; + + + +#define eflag optlist[0] +#define fflag optlist[1] +#define Iflag optlist[2] +#define iflag optlist[3] +#define mflag optlist[4] +#define nflag optlist[5] +#define sflag optlist[6] +#define xflag optlist[7] +#define vflag optlist[8] +#define Vflag optlist[9] +#define Eflag optlist[10] +#define Cflag optlist[11] +#define aflag optlist[12] +#define bflag optlist[13] +#define uflag optlist[14] +#define nolog optlist[15] +#define debug optlist[16] + +#define NOPTS 17 + +extern const char optletters[NOPTS]; +extern char optlist[NOPTS]; + + +extern char *minusc; /* argument to -c option */ +extern char *arg0; /* $0 */ +extern struct shparam shellparam; /* $@ */ +extern char **argptr; /* argument list for builtin commands */ +extern char *optionarg; /* set by nextopt */ +extern char *optptr; /* used by nextopt */ + +int procargs(int, char **); +void optschanged(void); +void setparam(char **); +void freeparam(volatile struct shparam *); +int shiftcmd(int, char **); +int setcmd(int, char **); +int getoptscmd(int, char **); +int nextopt(const char *); +void getoptsreset(const char *); diff --git a/bin/dash/src/output.c b/bin/dash/src/output.c new file mode 100644 index 00000000..e9ee9b4d --- /dev/null +++ b/bin/dash/src/output.c @@ -0,0 +1,429 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Shell output routines. We use our own output routines because: + * When a builtin command is interrupted we have to discard + * any pending output. + * When a builtin command appears in back quotes, we want to + * save the output of the command in a region obtained + * via malloc, rather than doing a fork and reading the + * output of the command via a pipe. + * Our output routines may be smaller than the stdio routines. + */ + +#include <sys/types.h> /* quad_t */ +#include <sys/param.h> /* BSD4_4 */ +#include <sys/ioctl.h> + +#include <stdio.h> /* defines BUFSIZ */ +#include <string.h> +#include <unistd.h> +#include <stdlib.h> +#ifdef USE_GLIBC_STDIO +#include <fcntl.h> +#endif +#include <limits.h> + +#include "shell.h" +#include "syntax.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "main.h" +#include "system.h" + + +#define OUTBUFSIZ BUFSIZ +#define MEM_OUT -3 /* output to dynamically allocated memory */ + + +#ifdef USE_GLIBC_STDIO +struct output output = { + .stream = 0, .nextc = 0, .end = 0, .buf = 0, .bufsize = 0, .fd = 1, .flags = 0 +}; +struct output errout = { + .stream = 0, .nextc = 0, .end = 0, .buf = 0, .bufsize = 0, .fd = 2, .flags = 0 +} +#ifdef notyet +struct output memout = { + .stream = 0, .nextc = 0, .end = 0, .buf = 0, .bufsize = 0, .fd = MEM_OUT, .flags = 0 +}; +#endif +#else +struct output output = { + .nextc = 0, .end = 0, .buf = 0, .bufsize = OUTBUFSIZ, .fd = 1, .flags = 0 +}; +struct output errout = { + .nextc = 0, .end = 0, .buf = 0, .bufsize = 0, .fd = 2, .flags = 0 +}; +struct output preverrout; +#ifdef notyet +struct output memout = { + .nextc = 0, .end = 0, .buf = 0, .bufsize = 0, .fd = MEM_OUT, .flags = 0 +}; +#endif +#endif +struct output *out1 = &output; +struct output *out2 = &errout; + + +static int xvsnprintf(char *, size_t, const char *, va_list); + + +#ifdef mkinit + +INCLUDE "output.h" +INCLUDE "memalloc.h" + +INIT { +#ifdef USE_GLIBC_STDIO + initstreams(); +#endif +} + +RESET { +#ifdef notyet + out1 = &output; + out2 = &errout; +#ifdef USE_GLIBC_STDIO + if (memout.stream != NULL) + __closememout(); +#endif + if (memout.buf != NULL) { + ckfree(memout.buf); + memout.buf = NULL; + } +#endif +} + +#endif + + +void +outmem(const char *p, size_t len, struct output *dest) +{ +#ifdef USE_GLIBC_STDIO + INTOFF; + fwrite(p, 1, len, dest->stream); + INTON; +#else + size_t bufsize; + size_t offset; + size_t nleft; + + nleft = dest->end - dest->nextc; + if (likely(nleft >= len)) { +buffered: + dest->nextc = mempcpy(dest->nextc, p, len); + return; + } + + bufsize = dest->bufsize; + if (!bufsize) { + ; + } else if (dest->buf == NULL) { +#ifdef notyet + if (dest->fd == MEM_OUT && len > bufsize) { + bufsize = len; + } +#endif + offset = 0; +#ifdef notyet + goto alloc; + } else if (dest->fd == MEM_OUT) { + offset = bufsize; + if (bufsize >= len) { + bufsize <<= 1; + } else { + bufsize += len; + } + if (bufsize < offset) + goto err; +alloc: +#endif + INTOFF; + dest->buf = ckrealloc(dest->buf, bufsize); + dest->bufsize = bufsize; + dest->end = dest->buf + bufsize; + dest->nextc = dest->buf + offset; + INTON; + } else { + flushout(dest); + } + + nleft = dest->end - dest->nextc; + if (nleft > len) + goto buffered; + + if ((xwrite(dest->fd, p, len))) { +#ifdef notyet +err: +#endif + dest->flags |= OUTPUT_ERR; + } +#endif +} + + +void +outstr(const char *p, struct output *file) +{ +#ifdef USE_GLIBC_STDIO + INTOFF; + fputs(p, file->stream); + INTON; +#else + size_t len; + + len = strlen(p); + outmem(p, len, file); +#endif +} + + +#ifndef USE_GLIBC_STDIO + + +void +outcslow(int c, struct output *dest) +{ + char buf = c; + outmem(&buf, 1, dest); +} +#endif + + +void +flushall(void) +{ + flushout(&output); +#ifdef FLUSHERR + flushout(&errout); +#endif +} + + +void +flushout(struct output *dest) +{ +#ifdef USE_GLIBC_STDIO + INTOFF; + fflush(dest->stream); + INTON; +#else + size_t len; + + len = dest->nextc - dest->buf; + if (!len || dest->fd < 0) + return; + dest->nextc = dest->buf; + if ((xwrite(dest->fd, dest->buf, len))) + dest->flags |= OUTPUT_ERR; +#endif +} + + +void +outfmt(struct output *file, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + doformat(file, fmt, ap); + va_end(ap); +} + + +void +out1fmt(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + doformat(out1, fmt, ap); + va_end(ap); +} + + +int +fmtstr(char *outbuf, size_t length, const char *fmt, ...) +{ + va_list ap; + int ret; + + va_start(ap, fmt); + ret = xvsnprintf(outbuf, length, fmt, ap); + va_end(ap); + return ret > (int)length ? length : ret; +} + + +static int xvasprintf(char **sp, size_t size, const char *f, va_list ap) +{ + char *s; + int len; + va_list ap2; + + va_copy(ap2, ap); + len = xvsnprintf(*sp, size, f, ap2); + va_end(ap2); + if (len < 0) + sh_error("xvsnprintf failed"); + if (len < size) + return len; + + s = stalloc((len >= stackblocksize() ? len : stackblocksize()) + 1); + *sp = s; + len = xvsnprintf(s, len + 1, f, ap); + return len; +} + + +int xasprintf(char **sp, const char *f, ...) +{ + va_list ap; + int ret; + + va_start(ap, f); + ret = xvasprintf(sp, 0, f, ap); + va_end(ap); + return ret; +} + + +#ifndef USE_GLIBC_STDIO +void +doformat(struct output *dest, const char *f, va_list ap) +{ + struct stackmark smark; + char *s; + int len; + int olen; + + setstackmark(&smark); + s = dest->nextc; + olen = dest->end - dest->nextc; + len = xvasprintf(&s, olen, f, ap); + if (likely(olen > len)) { + dest->nextc += len; + goto out; + } + outmem(s, len, dest); +out: + popstackmark(&smark); +} +#endif + + + +/* + * Version of write which resumes after a signal is caught. + */ + +int +xwrite(int fd, const void *p, size_t n) +{ + const char *buf = p; + + while (n) { + ssize_t i; + size_t m; + + m = n; + if (m > SSIZE_MAX) + m = SSIZE_MAX; + do { + i = write(fd, buf, m); + } while (i < 0 && errno == EINTR); + if (i < 0) + return -1; + buf += i; + n -= i; + } + return 0; +} + + +#ifdef notyet +#ifdef USE_GLIBC_STDIO +void initstreams() { + output.stream = stdout; + errout.stream = stderr; +} + + +void +openmemout(void) { + INTOFF; + memout.stream = open_memstream(&memout.buf, &memout.bufsize); + INTON; +} + + +int +__closememout(void) { + int error; + error = fclose(memout.stream); + memout.stream = NULL; + return error; +} +#endif +#endif + + +static int +xvsnprintf(char *outbuf, size_t length, const char *fmt, va_list ap) +{ + int ret; + +#ifdef __sun + /* + * vsnprintf() on older versions of Solaris returns -1 when + * passed a length of 0. To avoid this, use a dummy + * 1-character buffer instead. + */ + char dummy[1]; + + if (length == 0) { + outbuf = dummy; + length = sizeof(dummy); + } +#endif + + INTOFF; + ret = vsnprintf(outbuf, length, fmt, ap); + INTON; + return ret; +} diff --git a/bin/dash/src/output.h b/bin/dash/src/output.h new file mode 100644 index 00000000..c43d4937 --- /dev/null +++ b/bin/dash/src/output.h @@ -0,0 +1,126 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)output.h 8.2 (Berkeley) 5/4/95 + */ + +#ifndef OUTPUT_INCL + +#include <stdarg.h> +#ifdef USE_GLIBC_STDIO +#include <stdio.h> +#endif +#include <sys/types.h> + +struct output { +#ifdef USE_GLIBC_STDIO + FILE *stream; +#endif + char *nextc; + char *end; + char *buf; + size_t bufsize; + int fd; + int flags; +}; + +extern struct output output; +extern struct output errout; +extern struct output preverrout; +#ifdef notyet +extern struct output memout; +#endif +extern struct output *out1; +extern struct output *out2; + +void outmem(const char *, size_t, struct output *); +void outstr(const char *, struct output *); +#ifndef USE_GLIBC_STDIO +void outcslow(int, struct output *); +#endif +void flushall(void); +void flushout(struct output *); +void outfmt(struct output *, const char *, ...) + __attribute__((__format__(__printf__,2,3))); +void out1fmt(const char *, ...) + __attribute__((__format__(__printf__,1,2))); +int fmtstr(char *, size_t, const char *, ...) + __attribute__((__format__(__printf__,3,4))); +int xasprintf(char **, const char *, ...); +#ifndef USE_GLIBC_STDIO +void doformat(struct output *, const char *, va_list); +#endif +int xwrite(int, const void *, size_t); +#ifdef notyet +#ifdef USE_GLIBC_STDIO +void initstreams(void); +void openmemout(void); +int __closememout(void); +#endif +#endif + +static inline void +freestdout() +{ + output.nextc = output.buf; + output.flags = 0; +} + +#define OUTPUT_ERR 01 /* error occurred on output */ + +#ifdef USE_GLIBC_STDIO +static inline void outc(int ch, struct output *file) +{ + putc(ch, file->stream); +} +#define doformat(d, f, a) vfprintf((d)->stream, (f), (a)) +#else +static inline void outc(int ch, struct output *file) +{ + if (file->nextc == file->end) + outcslow(ch, file); + else { + *file->nextc = ch; + file->nextc++; + } +} +#endif +#define out1c(c) outc((c), out1) +#define out2c(c) outcslow((c), out2) +#define out1mem(s, l) outmem((s), (l), out1) +#define out1str(s) outstr((s), out1) +#define out2str(s) outstr((s), out2) +#define outerr(f) (f)->flags + +#define OUTPUT_INCL +#endif diff --git a/bin/dash/src/parser.c b/bin/dash/src/parser.c new file mode 100644 index 00000000..499f7f8e --- /dev/null +++ b/bin/dash/src/parser.c @@ -0,0 +1,1677 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if HAVE_ALLOCA_H +#include <alloca.h> +#endif + +#include <stdlib.h> + +#include "shell.h" +#include "parser.h" +#include "nodes.h" +#include "expand.h" /* defines rmescapes() */ +#include "exec.h" /* defines find_builtin() */ +#include "syntax.h" +#include "options.h" +#include "input.h" +#include "output.h" +#include "var.h" +#include "error.h" +#include "memalloc.h" +#include "mystring.h" +#include "alias.h" +#include "show.h" +#include "builtins.h" +#include "system.h" +#ifndef SMALL +#include "myhistedit.h" +#endif + +/* + * Shell command parser. + */ + +/* values returned by readtoken */ +#include "token_vars.h" + + + +/* Used by expandstr to get here-doc like behaviour. */ +#define FAKEEOFMARK (char *)1 + + + +struct heredoc { + struct heredoc *next; /* next here document in list */ + union node *here; /* redirection node */ + char *eofmark; /* string indicating end of input */ + int striptabs; /* if set, strip leading tabs */ +}; + +struct synstack { + const char *syntax; + struct synstack *prev; + struct synstack *next; + int innerdq; + int varpushed; + int dblquote; + int varnest; /* levels of variables expansion */ + int parenlevel; /* levels of parens in arithmetic */ + int dqvarnest; /* levels of variables expansion within double quotes */ +}; + + + +struct heredoc *heredoclist; /* list of here documents to read */ +int doprompt; /* if set, prompt the user */ +int needprompt; /* true if interactive and at start of line */ +int lasttoken; /* last token read */ +int tokpushback; /* last token pushed back */ +char *wordtext; /* text of last word returned by readtoken */ +int checkkwd; +struct nodelist *backquotelist; +union node *redirnode; +struct heredoc *heredoc; +int quoteflag; /* set if (part of) last token was quoted */ + + +static char *promptcache; +static char *rpromptcache; + + +STATIC union node *list(int); +STATIC union node *andor(void); +STATIC union node *pipeline(void); +STATIC union node *command(void); +STATIC union node *simplecmd(void); +STATIC union node *makename(void); +STATIC void parsefname(void); +STATIC void parseheredoc(void); +STATIC int readtoken(void); +STATIC int xxreadtoken(void); +STATIC int pgetc_eatbnl(); +STATIC int readtoken1(int, char const *, char *, int); +STATIC void synexpect(int) __attribute__((__noreturn__)); +STATIC void synerror(const char *) __attribute__((__noreturn__)); +STATIC void setprompt(int); + + +int isassignment(const char *p) +{ + const char *q = endofname(p); + if (p == q) + return 0; + return *q == '='; +} + +static inline int realeofmark(const char *eofmark) +{ + return eofmark && eofmark != FAKEEOFMARK; +} + + +/* + * Read and parse a command. Returns NEOF on end of file. (NULL is a + * valid parse tree indicating a blank line.) + */ + +union node * +parsecmd(int interact) +{ + tokpushback = 0; + checkkwd = 0; + heredoclist = 0; + doprompt = interact; + if (doprompt) + setprompt(doprompt); + needprompt = 0; + return list(1); +} + + +STATIC union node * +list(int nlflag) +{ + int chknl = nlflag & 1 ? 0 : CHKNL; + union node *n1, *n2, *n3; + int tok; + + n1 = NULL; + for (;;) { + checkkwd = chknl | CHKKWD | CHKALIAS; + tok = readtoken(); + switch (tok) { + case TNL: + parseheredoc(); + return n1; + + case TEOF: + if (!n1 && !chknl) + n1 = NEOF; +out_eof: + parseheredoc(); + tokpushback++; + lasttoken = TEOF; + return n1; + } + + tokpushback++; + if (nlflag == 2 && tokendlist[tok]) + return n1; + nlflag |= 2; + + n2 = andor(); + tok = readtoken(); + if (tok == TBACKGND) { + if (n2->type == NPIPE) { + n2->npipe.backgnd = 1; + } else { + if (n2->type != NREDIR) { + n3 = stalloc(sizeof(struct nredir)); + n3->nredir.n = n2; + n3->nredir.redirect = NULL; + n2 = n3; + } + n2->type = NBACKGND; + } + } + if (n1 == NULL) { + n1 = n2; + } + else { + n3 = (union node *)stalloc(sizeof (struct nbinary)); + n3->type = NSEMI; + n3->nbinary.ch1 = n1; + n3->nbinary.ch2 = n2; + n1 = n3; + } + switch (tok) { + case TEOF: + goto out_eof; + case TNL: + tokpushback++; + /* fall through */ + case TBACKGND: + case TSEMI: + break; + default: + if (!chknl) + synexpect(-1); + tokpushback++; + return n1; + } + } +} + + + +STATIC union node * +andor(void) +{ + union node *n1, *n2, *n3; + int t; + + n1 = pipeline(); + for (;;) { + if ((t = readtoken()) == TAND) { + t = NAND; + } else if (t == TOR) { + t = NOR; + } else { + tokpushback++; + return n1; + } + checkkwd = CHKNL | CHKKWD | CHKALIAS; + n2 = pipeline(); + n3 = (union node *)stalloc(sizeof (struct nbinary)); + n3->type = t; + n3->nbinary.ch1 = n1; + n3->nbinary.ch2 = n2; + n1 = n3; + } +} + + + +STATIC union node * +pipeline(void) +{ + union node *n1, *n2, *pipenode; + struct nodelist *lp, *prev; + int negate; + + negate = 0; + TRACE(("pipeline: entered\n")); + if (readtoken() == TNOT) { + negate = !negate; + checkkwd = CHKKWD | CHKALIAS; + } else + tokpushback++; + n1 = command(); + if (readtoken() == TPIPE) { + pipenode = (union node *)stalloc(sizeof (struct npipe)); + pipenode->type = NPIPE; + pipenode->npipe.backgnd = 0; + lp = (struct nodelist *)stalloc(sizeof (struct nodelist)); + pipenode->npipe.cmdlist = lp; + lp->n = n1; + do { + prev = lp; + lp = (struct nodelist *)stalloc(sizeof (struct nodelist)); + checkkwd = CHKNL | CHKKWD | CHKALIAS; + lp->n = command(); + prev->next = lp; + } while (readtoken() == TPIPE); + lp->next = NULL; + n1 = pipenode; + } + tokpushback++; + if (negate) { + n2 = (union node *)stalloc(sizeof (struct nnot)); + n2->type = NNOT; + n2->nnot.com = n1; + return n2; + } else + return n1; +} + + + +STATIC union node * +command(void) +{ + union node *n1, *n2; + union node *ap, **app; + union node *cp, **cpp; + union node *redir, **rpp; + union node **rpp2; + int t; + int savelinno; + + redir = NULL; + rpp2 = &redir; + + savelinno = plinno; + + switch (readtoken()) { + default: + synexpect(-1); + /* NOTREACHED */ + case TIF: + n1 = (union node *)stalloc(sizeof (struct nif)); + n1->type = NIF; + n1->nif.test = list(0); + if (readtoken() != TTHEN) + synexpect(TTHEN); + n1->nif.ifpart = list(0); + n2 = n1; + while (readtoken() == TELIF) { + n2->nif.elsepart = (union node *)stalloc(sizeof (struct nif)); + n2 = n2->nif.elsepart; + n2->type = NIF; + n2->nif.test = list(0); + if (readtoken() != TTHEN) + synexpect(TTHEN); + n2->nif.ifpart = list(0); + } + if (lasttoken == TELSE) + n2->nif.elsepart = list(0); + else { + n2->nif.elsepart = NULL; + tokpushback++; + } + t = TFI; + break; + case TWHILE: + case TUNTIL: { + int got; + n1 = (union node *)stalloc(sizeof (struct nbinary)); + n1->type = (lasttoken == TWHILE)? NWHILE : NUNTIL; + n1->nbinary.ch1 = list(0); + if ((got=readtoken()) != TDO) { +TRACE(("expecting DO got %s %s\n", tokname[got], got == TWORD ? wordtext : "")); + synexpect(TDO); + } + n1->nbinary.ch2 = list(0); + t = TDONE; + break; + } + case TFOR: + if (readtoken() != TWORD || quoteflag || ! goodname(wordtext)) + synerror("Bad for loop variable"); + n1 = (union node *)stalloc(sizeof (struct nfor)); + n1->type = NFOR; + n1->nfor.linno = savelinno; + n1->nfor.var = wordtext; + checkkwd = CHKNL | CHKKWD | CHKALIAS; + if (readtoken() == TIN) { + app = ≈ + while (readtoken() == TWORD) { + n2 = (union node *)stalloc(sizeof (struct narg)); + n2->type = NARG; + n2->narg.text = wordtext; + n2->narg.backquote = backquotelist; + *app = n2; + app = &n2->narg.next; + } + *app = NULL; + n1->nfor.args = ap; + if (lasttoken != TNL && lasttoken != TSEMI) + synexpect(-1); + } else { + n2 = (union node *)stalloc(sizeof (struct narg)); + n2->type = NARG; + n2->narg.text = (char *)dolatstr; + n2->narg.backquote = NULL; + n2->narg.next = NULL; + n1->nfor.args = n2; + /* + * Newline or semicolon here is optional (but note + * that the original Bourne shell only allowed NL). + */ + if (lasttoken != TSEMI) + tokpushback++; + } + checkkwd = CHKNL | CHKKWD | CHKALIAS; + if (readtoken() != TDO) + synexpect(TDO); + n1->nfor.body = list(0); + t = TDONE; + break; + case TCASE: + n1 = (union node *)stalloc(sizeof (struct ncase)); + n1->type = NCASE; + n1->ncase.linno = savelinno; + if (readtoken() != TWORD) + synexpect(TWORD); + n1->ncase.expr = n2 = (union node *)stalloc(sizeof (struct narg)); + n2->type = NARG; + n2->narg.text = wordtext; + n2->narg.backquote = backquotelist; + n2->narg.next = NULL; + checkkwd = CHKNL | CHKKWD | CHKALIAS; + if (readtoken() != TIN) + synexpect(TIN); + cpp = &n1->ncase.cases; +next_case: + checkkwd = CHKNL | CHKKWD; + t = readtoken(); + while(t != TESAC) { + if (lasttoken == TLP) + readtoken(); + *cpp = cp = (union node *)stalloc(sizeof (struct nclist)); + cp->type = NCLIST; + app = &cp->nclist.pattern; + for (;;) { + *app = ap = (union node *)stalloc(sizeof (struct narg)); + ap->type = NARG; + ap->narg.text = wordtext; + ap->narg.backquote = backquotelist; + if (readtoken() != TPIPE) + break; + app = &ap->narg.next; + readtoken(); + } + ap->narg.next = NULL; + if (lasttoken != TRP) + synexpect(TRP); + cp->nclist.body = list(2); + + cpp = &cp->nclist.next; + + checkkwd = CHKNL | CHKKWD; + if ((t = readtoken()) != TESAC) { + if (t != TENDCASE) + synexpect(TENDCASE); + else + goto next_case; + } + } + *cpp = NULL; + goto redir; + case TLP: + n1 = (union node *)stalloc(sizeof (struct nredir)); + n1->type = NSUBSHELL; + n1->nredir.linno = savelinno; + n1->nredir.n = list(0); + n1->nredir.redirect = NULL; + t = TRP; + break; + case TBEGIN: + n1 = list(0); + t = TEND; + break; + case TWORD: + case TREDIR: + tokpushback++; + return simplecmd(); + } + + if (readtoken() != t) + synexpect(t); + +redir: + /* Now check for redirection which may follow command */ + checkkwd = CHKKWD | CHKALIAS; + rpp = rpp2; + while (readtoken() == TREDIR) { + *rpp = n2 = redirnode; + rpp = &n2->nfile.next; + parsefname(); + } + tokpushback++; + *rpp = NULL; + if (redir) { + if (n1->type != NSUBSHELL) { + n2 = (union node *)stalloc(sizeof (struct nredir)); + n2->type = NREDIR; + n2->nredir.linno = savelinno; + n2->nredir.n = n1; + n1 = n2; + } + n1->nredir.redirect = redir; + } + + return n1; +} + + +STATIC union node * +simplecmd(void) { + union node *args, **app; + union node *n = NULL; + union node *vars, **vpp; + union node **rpp, *redir; + int savecheckkwd; + int savelinno; + + args = NULL; + app = &args; + vars = NULL; + vpp = &vars; + redir = NULL; + rpp = &redir; + + savecheckkwd = CHKALIAS; + savelinno = plinno; + for (;;) { + checkkwd = savecheckkwd; + switch (readtoken()) { + case TWORD: + n = (union node *)stalloc(sizeof (struct narg)); + n->type = NARG; + n->narg.text = wordtext; + n->narg.backquote = backquotelist; + if (savecheckkwd && isassignment(wordtext)) { + *vpp = n; + vpp = &n->narg.next; + } else { + *app = n; + app = &n->narg.next; + savecheckkwd = 0; + } + break; + case TREDIR: + *rpp = n = redirnode; + rpp = &n->nfile.next; + parsefname(); /* read name of redirection file */ + break; + case TLP: + if ( + args && app == &args->narg.next && + !vars && !redir + ) { + struct builtincmd *bcmd; + const char *name; + + /* We have a function */ + if (readtoken() != TRP) + synexpect(TRP); + name = n->narg.text; + if ( + !goodname(name) || ( + (bcmd = find_builtin(name)) && + bcmd->flags & BUILTIN_SPECIAL + ) + ) + synerror("Bad function name"); + n->type = NDEFUN; + checkkwd = CHKNL | CHKKWD | CHKALIAS; + n->ndefun.text = n->narg.text; + n->ndefun.linno = plinno; + n->ndefun.body = command(); + return n; + } + /* fall through */ + default: + tokpushback++; + goto out; + } + } +out: + *app = NULL; + *vpp = NULL; + *rpp = NULL; + n = (union node *)stalloc(sizeof (struct ncmd)); + n->type = NCMD; + n->ncmd.linno = savelinno; + n->ncmd.args = args; + n->ncmd.assign = vars; + n->ncmd.redirect = redir; + return n; +} + +STATIC union node * +makename(void) +{ + union node *n; + + n = (union node *)stalloc(sizeof (struct narg)); + n->type = NARG; + n->narg.next = NULL; + n->narg.text = wordtext; + n->narg.backquote = backquotelist; + return n; +} + +void fixredir(union node *n, const char *text, int err) + { + TRACE(("Fix redir %s %d\n", text, err)); + if (!err) + n->ndup.vname = NULL; + + if (is_digit(text[0]) && text[1] == '\0') + n->ndup.dupfd = digit_val(text[0]); + else if (text[0] == '-' && text[1] == '\0') + n->ndup.dupfd = -1; + else { + + if (err) + synerror("Bad fd number"); + else + n->ndup.vname = makename(); + } +} + + +STATIC void +parsefname(void) +{ + union node *n = redirnode; + + if (n->type == NHERE) + checkkwd = CHKEOFMARK; + if (readtoken() != TWORD) + synexpect(-1); + if (n->type == NHERE) { + struct heredoc *here = heredoc; + struct heredoc *p; + + if (quoteflag == 0) + n->type = NXHERE; + TRACE(("Here document %d\n", n->type)); + rmescapes(wordtext); + here->eofmark = wordtext; + here->next = NULL; + if (heredoclist == NULL) + heredoclist = here; + else { + for (p = heredoclist ; p->next ; p = p->next); + p->next = here; + } + } else if (n->type == NTOFD || n->type == NFROMFD) { + fixredir(n, wordtext, 0); + } else { + n->nfile.fname = makename(); + } +} + + +/* + * Input any here documents. + */ + +STATIC void +parseheredoc(void) +{ + struct heredoc *here; + union node *n; + + here = heredoclist; + heredoclist = 0; + + while (here) { + if (needprompt) { + setprompt(2); + } + if (here->here->type == NHERE) + readtoken1(pgetc(), SQSYNTAX, here->eofmark, here->striptabs); + else + readtoken1(pgetc_eatbnl(), DQSYNTAX, here->eofmark, here->striptabs); + n = (union node *)stalloc(sizeof (struct narg)); + n->narg.type = NARG; + n->narg.next = NULL; + n->narg.text = wordtext; + n->narg.backquote = backquotelist; + here->here->nhere.doc = n; + here = here->next; + } +} + +STATIC int +readtoken(void) +{ + int t; + int kwd = checkkwd; +#ifdef DEBUG + int alreadyseen = tokpushback; +#endif + +top: + t = xxreadtoken(); + + /* + * eat newlines + */ + if (kwd & CHKNL) { + while (t == TNL) { + parseheredoc(); + checkkwd = 0; + t = xxreadtoken(); + } + } + + kwd |= checkkwd; + checkkwd = 0; + + if (t != TWORD || quoteflag) { + goto out; + } + + /* + * check for keywords + */ + if (kwd & CHKKWD) { + const char *const *pp; + + if ((pp = findkwd(wordtext))) { + lasttoken = t = pp - parsekwd + KWDOFFSET; + TRACE(("keyword %s recognized\n", tokname[t])); + goto out; + } + } + + if (kwd & CHKALIAS) { + struct alias *ap; + if ((ap = lookupalias(wordtext, 1)) != NULL) { + if (*ap->val) { + pushstring(ap->val, ap); + } + goto top; + } + } +out: +#ifdef DEBUG + if (!alreadyseen) + TRACE(("token %s %s\n", tokname[t], t == TWORD ? wordtext : "")); + else + TRACE(("reread token %s %s\n", tokname[t], t == TWORD ? wordtext : "")); +#endif + return (t); +} + +static void nlprompt(void) +{ + plinno++; + if (doprompt) + setprompt(2); +} + +static void nlnoprompt(void) +{ + plinno++; + needprompt = doprompt; +} + + +/* + * Read the next input token. + * If the token is a word, we set backquotelist to the list of cmds in + * backquotes. We set quoteflag to true if any part of the word was + * quoted. + * If the token is TREDIR, then we set redirnode to a structure containing + * the redirection. + * + * [Change comment: here documents and internal procedures] + * [Readtoken shouldn't have any arguments. Perhaps we should make the + * word parsing code into a separate routine. In this case, readtoken + * doesn't need to have any internal procedures, but parseword does. + * We could also make parseoperator in essence the main routine, and + * have parseword (readtoken1?) handle both words and redirection.] + */ + +#define RETURN(token) return lasttoken = token + +STATIC int +xxreadtoken(void) +{ + int c; + + if (tokpushback) { + tokpushback = 0; + return lasttoken; + } + if (needprompt) { + setprompt(2); + } + for (;;) { /* until token or start of word found */ + c = pgetc_eatbnl(); + switch (c) { + case ' ': case '\t': + case PEOA: + continue; + case '#': + while ((c = pgetc()) != '\n' && c != PEOF); + pungetc(); + continue; + case '\n': + nlnoprompt(); + RETURN(TNL); + case PEOF: + RETURN(TEOF); + case '&': + if (pgetc_eatbnl() == '&') + RETURN(TAND); + pungetc(); + RETURN(TBACKGND); + case '|': + if (pgetc_eatbnl() == '|') + RETURN(TOR); + pungetc(); + RETURN(TPIPE); + case ';': + if (pgetc_eatbnl() == ';') + RETURN(TENDCASE); + pungetc(); + RETURN(TSEMI); + case '(': + RETURN(TLP); + case ')': + RETURN(TRP); + } + break; + } + return readtoken1(c, BASESYNTAX, (char *)NULL, 0); +#undef RETURN +} + +static int pgetc_eatbnl(void) +{ + int c; + + while ((c = pgetc()) == '\\') { + if (pgetc2() != '\n') { + pungetc(); + break; + } + + nlprompt(); + } + + return c; +} + +static int pgetc_top(struct synstack *stack) +{ + return stack->syntax == SQSYNTAX ? pgetc() : pgetc_eatbnl(); +} + +static void synstack_push(struct synstack **stack, struct synstack *next, + const char *syntax) +{ + memset(next, 0, sizeof(*next)); + next->syntax = syntax; + next->next = *stack; + (*stack)->prev = next; + *stack = next; +} + +static void synstack_pop(struct synstack **stack) +{ + *stack = (*stack)->next; +} + + + +/* + * If eofmark is NULL, read a word or a redirection symbol. If eofmark + * is not NULL, read a here document. In the latter case, eofmark is the + * word which marks the end of the document and striptabs is true if + * leading tabs should be stripped from the document. The argument firstc + * is the first character of the input token or document. + * + * Because C does not have internal subroutines, I have simulated them + * using goto's to implement the subroutine linkage. The following macros + * will run code that appears at the end of readtoken1. + */ + +#define CHECKEND() {goto checkend; checkend_return:;} +#define PARSEREDIR() {goto parseredir; parseredir_return:;} +#define PARSESUB() {goto parsesub; parsesub_return:;} +#define PARSEBACKQOLD() {oldstyle = 1; goto parsebackq; parsebackq_oldreturn:;} +#define PARSEBACKQNEW() {oldstyle = 0; goto parsebackq; parsebackq_newreturn:;} +#define PARSEARITH() {goto parsearith; parsearith_return:;} + +STATIC int +readtoken1(int firstc, char const *syntax, char *eofmark, int striptabs) +{ + int c = firstc; + char *out; + size_t len; + struct nodelist *bqlist; + int quotef; + int oldstyle; + /* syntax stack */ + struct synstack synbase = { .syntax = syntax }; + struct synstack *synstack = &synbase; + + if (syntax == DQSYNTAX) + synstack->dblquote = 1; + quotef = 0; + bqlist = NULL; + + STARTSTACKSTR(out); + loop: { /* for each line, until end of word */ +#if ATTY + if (c == '\034' && doprompt + && attyset() && ! equal(termval(), "emacs")) { + attyline(); + if (synstack->syntax == BASESYNTAX) + return readtoken(); + c = pgetc_top(synstack); + goto loop; + } +#endif + CHECKEND(); /* set c to PEOF if at end of here document */ + for (;;) { /* until end of line or end of word */ + CHECKSTRSPACE(4, out); /* permit 4 calls to USTPUTC */ + switch(synstack->syntax[c]) { + case CNL: /* '\n' */ + if (synstack->syntax == BASESYNTAX && + !synstack->varnest) + goto endword; /* exit outer loop */ + USTPUTC(c, out); + nlprompt(); + c = pgetc_top(synstack); + goto loop; /* continue outer loop */ + case CWORD: + USTPUTC(c, out); + break; + case CCTL: + if ((!eofmark) | synstack->dblquote | + synstack->varnest) + USTPUTC(CTLESC, out); + USTPUTC(c, out); + break; + /* backslash */ + case CBACK: + c = pgetc2(); + if (c == PEOF) { + USTPUTC(CTLESC, out); + USTPUTC('\\', out); + pungetc(); + } else { + if ( + synstack->dblquote && + c != '\\' && c != '`' && + c != '$' && ( + c != '"' || + (eofmark != NULL && + !synstack->varnest) + ) && ( + c != '}' || + !synstack->varnest + ) + ) { + USTPUTC(CTLESC, out); + USTPUTC('\\', out); + } + USTPUTC(CTLESC, out); + USTPUTC(c, out); + quotef++; + } + break; + case CSQUOTE: + synstack->syntax = SQSYNTAX; +quotemark: + if (eofmark == NULL) { + USTPUTC(CTLQUOTEMARK, out); + } + break; + case CDQUOTE: + synstack->syntax = DQSYNTAX; + synstack->dblquote = 1; +toggledq: + if (synstack->varnest) + synstack->innerdq ^= 1; + goto quotemark; + case CENDQUOTE: + if (eofmark && !synstack->varnest) { + USTPUTC(c, out); + break; + } + + if (synstack->dqvarnest == 0) { + synstack->syntax = BASESYNTAX; + synstack->dblquote = 0; + } + + quotef++; + + if (c == '"') + goto toggledq; + + goto quotemark; + case CVAR: /* '$' */ + PARSESUB(); /* parse substitution */ + break; + case CENDVAR: /* '}' */ + if (!synstack->innerdq && + synstack->varnest > 0) { + if (!--synstack->varnest && + synstack->varpushed) + synstack_pop(&synstack); + else if (synstack->dqvarnest > 0) + synstack->dqvarnest--; + USTPUTC(CTLENDVAR, out); + } else { + USTPUTC(c, out); + } + break; + case CLP: /* '(' in arithmetic */ + synstack->parenlevel++; + USTPUTC(c, out); + break; + case CRP: /* ')' in arithmetic */ + if (synstack->parenlevel > 0) { + USTPUTC(c, out); + --synstack->parenlevel; + } else { + if (pgetc_eatbnl() == ')') { + USTPUTC(CTLENDARI, out); + synstack_pop(&synstack); + } else { + /* + * unbalanced parens + * (don't 2nd guess - no error) + */ + pungetc(); + USTPUTC(')', out); + } + } + break; + case CBQUOTE: /* '`' */ + if (checkkwd & CHKEOFMARK) { + USTPUTC('`', out); + break; + } + + PARSEBACKQOLD(); + break; + case CEOF: + goto endword; /* exit outer loop */ + case CIGN: + break; + default: + if (synstack->varnest == 0) + goto endword; /* exit outer loop */ + if (c != PEOA) { + USTPUTC(c, out); + } + } + c = pgetc_top(synstack); + } + } +endword: + if (synstack->syntax == ARISYNTAX) + synerror("Missing '))'"); + if (synstack->syntax != BASESYNTAX && eofmark == NULL) + synerror("Unterminated quoted string"); + if (synstack->varnest != 0) { + /* { */ + synerror("Missing '}'"); + } + USTPUTC('\0', out); + len = out - (char *)stackblock(); + out = stackblock(); + if (eofmark == NULL) { + if ((c == '>' || c == '<') + && quotef == 0 + && len <= 2 + && (*out == '\0' || is_digit(*out))) { + PARSEREDIR(); + return lasttoken = TREDIR; + } else { + pungetc(); + } + } + quoteflag = quotef; + backquotelist = bqlist; + grabstackblock(len); + wordtext = out; + return lasttoken = TWORD; +/* end of readtoken routine */ + + + +/* + * Check to see whether we are at the end of the here document. When this + * is called, c is set to the first character of the next input line. If + * we are at the end of the here document, this routine sets the c to PEOF. + */ + +checkend: { + if (realeofmark(eofmark)) { + int markloc; + char *p; + + if (c == PEOA) { + c = pgetc2(); + } + if (striptabs) { + while (c == '\t') { + c = pgetc2(); + } + } + + markloc = out - (char *)stackblock(); + for (p = eofmark; STPUTC(c, out), *p; p++) { + if (c != *p) + goto more_heredoc; + + c = pgetc2(); + } + + if (c == '\n' || c == PEOF) { + c = PEOF; + nlnoprompt(); + } else { + int len; + +more_heredoc: + p = (char *)stackblock() + markloc + 1; + len = out - p; + + if (len) { + len -= c < 0; + c = p[-1]; + + if (len) { + char *str; + + str = alloca(len + 1); + *(char *)mempcpy(str, p, len) = 0; + + pushstring(str, NULL); + } + } + } + + STADJUST((char *)stackblock() + markloc - out, out); + } + goto checkend_return; +} + + +/* + * Parse a redirection operator. The variable "out" points to a string + * specifying the fd to be redirected. The variable "c" contains the + * first character of the redirection operator. + */ + +parseredir: { + char fd = *out; + union node *np; + + np = (union node *)stalloc(sizeof (struct nfile)); + if (c == '>') { + np->nfile.fd = 1; + c = pgetc_eatbnl(); + if (c == '>') + np->type = NAPPEND; + else if (c == '|') + np->type = NCLOBBER; + else if (c == '&') + np->type = NTOFD; + else { + np->type = NTO; + pungetc(); + } + } else { /* c == '<' */ + np->nfile.fd = 0; + switch (c = pgetc_eatbnl()) { + case '<': + if (sizeof (struct nfile) != sizeof (struct nhere)) { + np = (union node *)stalloc(sizeof (struct nhere)); + np->nfile.fd = 0; + } + np->type = NHERE; + heredoc = (struct heredoc *)stalloc(sizeof (struct heredoc)); + heredoc->here = np; + if ((c = pgetc_eatbnl()) == '-') { + heredoc->striptabs = 1; + } else { + heredoc->striptabs = 0; + pungetc(); + } + break; + + case '&': + np->type = NFROMFD; + break; + + case '>': + np->type = NFROMTO; + break; + + default: + np->type = NFROM; + pungetc(); + break; + } + } + if (fd != '\0') + np->nfile.fd = digit_val(fd); + redirnode = np; + goto parseredir_return; +} + + +/* + * Parse a substitution. At this point, we have read the dollar sign + * and nothing else. + */ + +parsesub: { + int subtype; + int typeloc; + char *p; + static const char types[] = "}-+?="; + + c = pgetc_eatbnl(); + if ( + (checkkwd & CHKEOFMARK) || + c <= PEOA || + (c != '(' && c != '{' && !is_name(c) && !is_special(c)) + ) { + USTPUTC('$', out); + pungetc(); + } else if (c == '(') { /* $(command) or $((arith)) */ + if (pgetc_eatbnl() == '(') { + PARSEARITH(); + } else { + pungetc(); + PARSEBACKQNEW(); + } + } else { + const char *newsyn = synstack->syntax; + + USTPUTC(CTLVAR, out); + typeloc = out - (char *)stackblock(); + STADJUST(1, out); + subtype = VSNORMAL; + if (likely(c == '{')) { + c = pgetc_eatbnl(); + subtype = 0; + } +varname: + if (is_name(c)) { + do { + STPUTC(c, out); + c = pgetc_eatbnl(); + } while (is_in_name(c)); + } else if (is_digit(c)) { + do { + STPUTC(c, out); + c = pgetc_eatbnl(); + } while (!subtype && is_digit(c)); + } else if (c != '}') { + int cc = c; + + c = pgetc_eatbnl(); + + if (!subtype && cc == '#') { + subtype = VSLENGTH; + + if (c == '_' || isalnum(c)) + goto varname; + + cc = c; + c = pgetc_eatbnl(); + if (cc == '}' || c != '}') { + pungetc(); + subtype = 0; + c = cc; + cc = '#'; + } + } + + if (!is_special(cc)) { + if (subtype == VSLENGTH) + subtype = 0; + goto badsub; + } + + USTPUTC(cc, out); + } else + goto badsub; + + if (subtype == 0) { + int cc = c; + + switch (c) { + case ':': + subtype = VSNUL; + c = pgetc_eatbnl(); + /*FALLTHROUGH*/ + default: + p = strchr(types, c); + if (p == NULL) + break; + subtype |= p - types + VSNORMAL; + break; + case '%': + case '#': + subtype = c == '#' ? VSTRIMLEFT : + VSTRIMRIGHT; + c = pgetc_eatbnl(); + if (c == cc) + subtype++; + else + pungetc(); + + newsyn = BASESYNTAX; + break; + } + } else { +badsub: + pungetc(); + } + + if (newsyn == ARISYNTAX) + newsyn = DQSYNTAX; + + if ((newsyn != synstack->syntax || synstack->innerdq) && + subtype != VSNORMAL) { + synstack_push(&synstack, + synstack->prev ?: + alloca(sizeof(*synstack)), + newsyn); + + synstack->varpushed++; + synstack->dblquote = newsyn != BASESYNTAX; + } + + *((char *)stackblock() + typeloc) = subtype; + if (subtype != VSNORMAL) { + synstack->varnest++; + if (synstack->dblquote) + synstack->dqvarnest++; + } + STPUTC('=', out); + } + goto parsesub_return; +} + + +/* + * Called to parse command substitutions. Newstyle is set if the command + * is enclosed inside $(...); nlpp is a pointer to the head of the linked + * list of commands (passed by reference), and savelen is the number of + * characters on the top of the stack which must be preserved. + */ + +parsebackq: { + struct nodelist **nlpp; + union node *n; + char *str; + size_t savelen; + struct heredoc *saveheredoclist; + int uninitialized_var(saveprompt); + + str = NULL; + savelen = out - (char *)stackblock(); + if (savelen > 0) { + str = alloca(savelen); + memcpy(str, stackblock(), savelen); + } + if (oldstyle) { + /* We must read until the closing backquote, giving special + treatment to some slashes, and then push the string and + reread it as input, interpreting it normally. */ + char *pout; + int pc; + size_t psavelen; + char *pstr; + + + STARTSTACKSTR(pout); + for (;;) { + if (needprompt) { + setprompt(2); + } + switch (pc = pgetc_eatbnl()) { + case '`': + goto done; + + case '\\': + pc = pgetc(); + if (pc != '\\' && pc != '`' && pc != '$' + && (!synstack->dblquote || pc != '"')) + STPUTC('\\', pout); + if (pc > PEOA) { + break; + } + /* fall through */ + + case PEOF: + case PEOA: + synerror("EOF in backquote substitution"); + + case '\n': + nlnoprompt(); + break; + + default: + break; + } + STPUTC(pc, pout); + } +done: + STPUTC('\0', pout); + psavelen = pout - (char *)stackblock(); + if (psavelen > 0) { + pstr = grabstackstr(pout); + setinputstring(pstr); + } + } + nlpp = &bqlist; + while (*nlpp) + nlpp = &(*nlpp)->next; + *nlpp = (struct nodelist *)stalloc(sizeof (struct nodelist)); + (*nlpp)->next = NULL; + + saveheredoclist = heredoclist; + heredoclist = NULL; + + if (oldstyle) { + saveprompt = doprompt; + doprompt = 0; + } + + n = list(2); + + if (oldstyle) + doprompt = saveprompt; + else { + if (readtoken() != TRP) + synexpect(TRP); + setinputstring(nullstr); + } + + parseheredoc(); + heredoclist = saveheredoclist; + + (*nlpp)->n = n; + /* Start reading from old file again. */ + popfile(); + /* Ignore any pushed back tokens left from the backquote parsing. */ + if (oldstyle) + tokpushback = 0; + out = growstackto(savelen + 1); + if (str) { + memcpy(out, str, savelen); + STADJUST(savelen, out); + } + USTPUTC(CTLBACKQ, out); + if (oldstyle) + goto parsebackq_oldreturn; + else + goto parsebackq_newreturn; +} + +/* + * Parse an arithmetic expansion (indicate start of one and set state) + */ +parsearith: { + + synstack_push(&synstack, + synstack->prev ?: alloca(sizeof(*synstack)), + ARISYNTAX); + synstack->dblquote = 1; + USTPUTC(CTLARI, out); + goto parsearith_return; +} + +} /* end of readtoken */ + + + +#ifdef mkinit +INCLUDE "parser.h" +#endif + + +/* + * Return of a legal variable name (a letter or underscore followed by zero or + * more letters, underscores, and digits). + */ + +char * +endofname(const char *name) + { + char *p; + + p = (char *) name; + if (! is_name(*p)) + return p; + while (*++p) { + if (! is_in_name(*p)) + break; + } + return p; +} + + +/* + * Called when an unexpected token is read during the parse. The argument + * is the token that is expected, or -1 if more than one type of token can + * occur at this point. + */ + +STATIC void +synexpect(int token) +{ + char msg[64]; + + if (token >= 0) { + fmtstr(msg, 64, "%s unexpected (expecting %s)", + tokname[lasttoken], tokname[token]); + } else { + fmtstr(msg, 64, "%s unexpected", tokname[lasttoken]); + } + synerror(msg); + /* NOTREACHED */ +} + + +STATIC void +synerror(const char *msg) +{ + errlinno = plinno; + sh_error("Syntax error: %s", msg); + /* NOTREACHED */ +} + +const char * +expandstr(const char *ps) +{ + struct parsefile *file_stop; + struct jmploc *volatile savehandler; + struct heredoc *saveheredoclist; + const char *result; + int saveprompt; + struct jmploc jmploc; + union node n; + int err; + + file_stop = parsefile; + + /* XXX Fix (char *) cast. */ + setinputstring((char *)ps); + + saveheredoclist = heredoclist; + heredoclist = NULL; + saveprompt = doprompt; + doprompt = 0; + result = ps; + savehandler = handler; + if (unlikely(err = setjmp(jmploc.loc))) + goto out; + handler = &jmploc; + + readtoken1(pgetc_eatbnl(), DQSYNTAX, FAKEEOFMARK, 0); + + n.narg.type = NARG; + n.narg.next = NULL; + n.narg.text = wordtext; + n.narg.backquote = backquotelist; + + expandarg(&n, NULL, EXP_QUOTED); + result = stackblock(); + +out: + handler = savehandler; + if (err && exception != EXERROR) + longjmp(handler->loc, 1); + + doprompt = saveprompt; + unwindfiles(file_stop); + heredoclist = saveheredoclist; + + return result; +} + +STATIC void +setprompt(int which) +{ + struct stackmark smark; + const char *prompt, *rprompt, *nl; + int show; + + needprompt = 0; + whichprompt = which; + + switch (whichprompt) { + default: +#ifdef DEBUG + prompt = "<internal prompt error>"; + rprompt = prompt; + break; +#endif + case 0: + prompt = nullstr; + rprompt = nullstr; + break; + case 1: + prompt = ps1val(); + rprompt = rps1val(); + break; + case 2: + prompt = ps2val(); + rprompt = rps2val(); + break; + } + +#ifdef SMALL + show = 1; +#else + show = !el; +#endif + pushstackmark(&smark, stackblocksize()); + if (show) { + out2str(expandstr(prompt)); + } else { + free(promptcache); + free(rpromptcache); + promptcache = savestr(expandstr(prompt)); + rpromptcache = savestr(expandstr(rprompt)); + + nl = strrchr(promptcache, '\n'); + if (nl) + outmem(promptcache, &nl[1] - promptcache, out2); + } + popstackmark(&smark); +} + +/* + * called by editline -- return the cached prompt expansion. + */ +const char * +getprompt(void *unused) +{ + const char *nl; + + nl = strrchr(promptcache, '\n'); + + if (nl) + return &nl[1]; + else + return promptcache; +} + +const char * +getrprompt(void *unused) +{ + return rpromptcache; +} + +const char *const * +findkwd(const char *s) +{ + return findstring( + s, parsekwd, sizeof(parsekwd) / sizeof(const char *) + ); +} diff --git a/bin/dash/src/parser.h b/bin/dash/src/parser.h new file mode 100644 index 00000000..6597faa8 --- /dev/null +++ b/bin/dash/src/parser.h @@ -0,0 +1,103 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)parser.h 8.3 (Berkeley) 5/4/95 + */ + +#include "token.h" + +/* control characters in argument strings */ +#define CTL_FIRST -127 /* first 'special' character */ +#define CTLESC -127 /* escape next character */ +#define CTLVAR -126 /* variable defn */ +#define CTLENDVAR -125 +#define CTLBACKQ -124 +#define CTLARI -122 /* arithmetic expression */ +#define CTLENDARI -121 +#define CTLQUOTEMARK -120 +#define CTL_LAST -120 /* last 'special' character */ + +/* variable substitution byte (follows CTLVAR) */ +#define VSTYPE 0x0f /* type of variable substitution */ +#define VSNUL 0x10 /* colon--treat the empty string as unset */ + +/* values of VSTYPE field */ +#define VSNORMAL 0x1 /* normal variable: $var or ${var} */ +#define VSMINUS 0x2 /* ${var-text} */ +#define VSPLUS 0x3 /* ${var+text} */ +#define VSQUESTION 0x4 /* ${var?message} */ +#define VSASSIGN 0x5 /* ${var=text} */ +#define VSTRIMRIGHT 0x6 /* ${var%pattern} */ +#define VSTRIMRIGHTMAX 0x7 /* ${var%%pattern} */ +#define VSTRIMLEFT 0x8 /* ${var#pattern} */ +#define VSTRIMLEFTMAX 0x9 /* ${var##pattern} */ +#define VSLENGTH 0xa /* ${#var} */ + +/* values of checkkwd variable */ +#define CHKALIAS 0x1 +#define CHKKWD 0x2 +#define CHKNL 0x4 +#define CHKEOFMARK 0x8 + + +/* + * NEOF is returned by parsecmd when it encounters an end of file. It + * must be distinct from NULL, so we use the address of a variable that + * happens to be handy. + */ +extern int lasttoken; +extern int tokpushback; +#define NEOF ((union node *)&tokpushback) +extern int whichprompt; /* 1 == PS1, 2 == PS2 */ +extern int checkkwd; + + +int isassignment(const char *p); +union node *parsecmd(int); +void fixredir(union node *, const char *, int); +const char *getprompt(void *); +const char *getrprompt(void *); +const char *const *findkwd(const char *); +char *endofname(const char *); +const char *expandstr(const char *); + +static inline int +goodname(const char *p) +{ + return !*endofname(p); +} + +static inline int parser_eof(void) +{ + return tokpushback && lasttoken == TEOF; +} diff --git a/bin/dash/src/redir.c b/bin/dash/src/redir.c new file mode 100644 index 00000000..895140c3 --- /dev/null +++ b/bin/dash/src/redir.c @@ -0,0 +1,483 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/param.h> /* PIPE_BUF */ +#include <signal.h> +#include <string.h> +#include <fcntl.h> +#include <unistd.h> +#include <stdlib.h> + +/* + * Code for dealing with input/output redirection. + */ + +#include "main.h" +#include "shell.h" +#include "nodes.h" +#include "jobs.h" +#include "options.h" +#include "expand.h" +#include "redir.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" + + +#define EMPTY -2 /* marks an unused slot in redirtab */ +#define CLOSED -1 /* fd opened for redir needs to be closed */ + +#ifndef PIPE_BUF +# define PIPESIZE 4096 /* amount of buffering in a pipe */ +#else +# define PIPESIZE PIPE_BUF +#endif + + +MKINIT +struct redirtab { + struct redirtab *next; + int renamed[10]; +}; + + +MKINIT struct redirtab *redirlist; + +/* Bit map of currently closed file descriptors. */ +static unsigned closed_redirs; + +STATIC int openredirect(union node *); +#ifdef notyet +STATIC void dupredirect(union node *, int, char[10]); +#else +STATIC void dupredirect(union node *, int); +#endif +STATIC int openhere(union node *); + + +static unsigned update_closed_redirs(int fd, int nfd) +{ + unsigned val = closed_redirs; + unsigned bit = 1 << fd; + + if (nfd >= 0) + closed_redirs &= ~bit; + else + closed_redirs |= bit; + + return val & bit; +} + + +/* + * Process a list of redirection commands. If the REDIR_PUSH flag is set, + * old file descriptors are stashed away so that the redirection can be + * undone by calling popredir. If the REDIR_BACKQ flag is set, then the + * standard output, and the standard error if it becomes a duplicate of + * stdout, is saved in memory. + */ + +void +redirect(union node *redir, int flags) +{ + union node *n; + struct redirtab *sv; + int i; + int fd; + int newfd; + int *p; +#if notyet + char memory[10]; /* file descriptors to write to memory */ + + for (i = 10 ; --i >= 0 ; ) + memory[i] = 0; + memory[1] = flags & REDIR_BACKQ; +#endif + if (!redir) + return; + sv = NULL; + INTOFF; + if (likely(flags & REDIR_PUSH)) + sv = redirlist; + n = redir; + do { + newfd = openredirect(n); + if (newfd < -1) + continue; + + fd = n->nfile.fd; + + if (sv) { + int closed; + + p = &sv->renamed[fd]; + i = *p; + + closed = update_closed_redirs(fd, newfd); + + if (likely(i == EMPTY)) { + i = CLOSED; + if (fd != newfd && !closed) { + i = savefd(fd, fd); + fd = -1; + } + } + + *p = i; + } + + if (fd == newfd) + continue; + +#ifdef notyet + dupredirect(n, newfd, memory); +#else + dupredirect(n, newfd); +#endif + } while ((n = n->nfile.next)); + INTON; +#ifdef notyet + if (memory[1]) + out1 = &memout; + if (memory[2]) + out2 = &memout; +#endif + if (flags & REDIR_SAVEFD2 && sv->renamed[2] >= 0) + preverrout.fd = sv->renamed[2]; +} + + +STATIC int +openredirect(union node *redir) +{ + struct stat64 sb; + char *fname; + int f; + + switch (redir->nfile.type) { + case NFROM: + fname = redir->nfile.expfname; + if ((f = open64(fname, O_RDONLY)) < 0) + goto eopen; + break; + case NFROMTO: + fname = redir->nfile.expfname; + if ((f = open64(fname, O_RDWR|O_CREAT, 0666)) < 0) + goto ecreate; + break; + case NTO: + /* Take care of noclobber mode. */ + if (Cflag) { + fname = redir->nfile.expfname; + if (stat64(fname, &sb) < 0) { + if ((f = open64(fname, O_WRONLY|O_CREAT|O_EXCL, 0666)) < 0) + goto ecreate; + } else if (!S_ISREG(sb.st_mode)) { + if ((f = open64(fname, O_WRONLY, 0666)) < 0) + goto ecreate; + if (!fstat64(f, &sb) && S_ISREG(sb.st_mode)) { + close(f); + errno = EEXIST; + goto ecreate; + } + } else { + errno = EEXIST; + goto ecreate; + } + break; + } + /* FALLTHROUGH */ + case NCLOBBER: + fname = redir->nfile.expfname; + if ((f = open64(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0) + goto ecreate; + break; + case NAPPEND: + fname = redir->nfile.expfname; + if ((f = open64(fname, O_WRONLY|O_CREAT|O_APPEND, 0666)) < 0) + goto ecreate; + break; + case NTOFD: + case NFROMFD: + f = redir->ndup.dupfd; + if (f == redir->nfile.fd) + f = -2; + break; + default: +#ifdef DEBUG + abort(); +#endif + /* Fall through to eliminate warning. */ + case NHERE: + case NXHERE: + f = openhere(redir); + break; + } + + return f; +ecreate: + sh_error("cannot create %s: %s", fname, errmsg(errno, E_CREAT)); +eopen: + sh_error("cannot open %s: %s", fname, errmsg(errno, E_OPEN)); +} + + +STATIC void +#ifdef notyet +dupredirect(redir, f, memory) +#else +dupredirect(redir, f) +#endif + union node *redir; + int f; +#ifdef notyet + char memory[10]; +#endif + { + int fd = redir->nfile.fd; + int err = 0; + +#ifdef notyet + memory[fd] = 0; +#endif + if (redir->nfile.type == NTOFD || redir->nfile.type == NFROMFD) { + /* if not ">&-" */ + if (f >= 0) { +#ifdef notyet + if (memory[f]) + memory[fd] = 1; + else +#endif + if (dup2(f, fd) < 0) { + err = errno; + goto err; + } + return; + } + f = fd; + } else if (dup2(f, fd) < 0) + err = errno; + + close(f); + if (err < 0) + goto err; + + return; + +err: + sh_error("%d: %s", f, strerror(err)); +} + + +/* + * Handle here documents. Normally we fork off a process to write the + * data to a pipe. If the document is short, we can stuff the data in + * the pipe without forking. + */ + +STATIC int +openhere(union node *redir) +{ + char *p; + int pip[2]; + size_t len = 0; + + if (pipe(pip) < 0) + sh_error("Pipe call failed"); + + p = redir->nhere.doc->narg.text; + if (redir->type == NXHERE) { + expandarg(redir->nhere.doc, NULL, EXP_QUOTED); + p = stackblock(); + } + + len = strlen(p); + if (len <= PIPESIZE) { + xwrite(pip[1], p, len); + goto out; + } + + if (forkshell((struct job *)NULL, (union node *)NULL, FORK_NOJOB) == 0) { + close(pip[0]); + signal(SIGINT, SIG_IGN); + signal(SIGQUIT, SIG_IGN); + signal(SIGHUP, SIG_IGN); +#ifdef SIGTSTP + signal(SIGTSTP, SIG_IGN); +#endif + signal(SIGPIPE, SIG_DFL); + xwrite(pip[1], p, len); + _exit(0); + } +out: + close(pip[1]); + return pip[0]; +} + + + +/* + * Undo the effects of the last redirection. + */ + +void +popredir(int drop) +{ + struct redirtab *rp; + int i; + + INTOFF; + rp = redirlist; + for (i = 0 ; i < 10 ; i++) { + int closed; + + if (rp->renamed[i] == EMPTY) + continue; + + closed = drop ? 1 : update_closed_redirs(i, rp->renamed[i]); + + switch (rp->renamed[i]) { + case CLOSED: + if (!closed) + close(i); + break; + default: + if (!drop) + dup2(rp->renamed[i], i); + close(rp->renamed[i]); + break; + } + } + redirlist = rp->next; + ckfree(rp); + INTON; +} + +/* + * Undo all redirections. Called on error or interrupt. + */ + +#ifdef mkinit + +INCLUDE "redir.h" + +EXITRESET { + /* + * Discard all saved file descriptors. + */ + unwindredir(0); +} + +FORKRESET { + redirlist = NULL; +} + +#endif + + + +/* + * Move a file descriptor to > 10. Invokes sh_error on error unless + * the original file dscriptor is not open. + */ + +int +savefd(int from, int ofd) +{ + int newfd; + int err; + + newfd = fcntl(from, F_DUPFD, 10); + err = newfd < 0 ? errno : 0; + if (err != EBADF) { + close(ofd); + if (err) + sh_error("%d: %s", from, strerror(err)); + else + fcntl(newfd, F_SETFD, FD_CLOEXEC); + } + + return newfd; +} + + +int +redirectsafe(union node *redir, int flags) +{ + int err; + volatile int saveint; + struct jmploc *volatile savehandler = handler; + struct jmploc jmploc; + + SAVEINT(saveint); + if (!(err = setjmp(jmploc.loc) * 2)) { + handler = &jmploc; + redirect(redir, flags); + } + handler = savehandler; + if (err && exception != EXERROR) + longjmp(handler->loc, 1); + RESTOREINT(saveint); + return err; +} + + +void unwindredir(struct redirtab *stop) +{ + while (redirlist != stop) + popredir(0); +} + + +struct redirtab *pushredir(union node *redir) +{ + struct redirtab *sv; + struct redirtab *q; + int i; + + q = redirlist; + if (!redir) + goto out; + + sv = ckmalloc(sizeof (struct redirtab)); + sv->next = q; + redirlist = sv; + for (i = 0; i < 10; i++) + sv->renamed[i] = EMPTY; + +out: + return q; +} diff --git a/bin/dash/src/redir.h b/bin/dash/src/redir.h new file mode 100644 index 00000000..1cf27616 --- /dev/null +++ b/bin/dash/src/redir.h @@ -0,0 +1,52 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)redir.h 8.2 (Berkeley) 5/4/95 + */ + +/* flags passed to redirect */ +#define REDIR_PUSH 01 /* save previous values of file descriptors */ +#ifdef notyet +#define REDIR_BACKQ 02 /* save the command output in memory */ +#endif +#define REDIR_SAVEFD2 03 /* set preverrout */ + +struct redirtab; +union node; +void redirect(union node *, int); +void popredir(int); +int savefd(int, int); +int redirectsafe(union node *, int); +void unwindredir(struct redirtab *stop); +struct redirtab *pushredir(union node *redir); + diff --git a/bin/dash/src/shell.h b/bin/dash/src/shell.h new file mode 100644 index 00000000..98edc8be --- /dev/null +++ b/bin/dash/src/shell.h @@ -0,0 +1,104 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)shell.h 8.2 (Berkeley) 5/4/95 + */ + +/* + * The follow should be set to reflect the type of system you have: + * JOBS -> 1 if you have Berkeley job control, 0 otherwise. + * SHORTNAMES -> 1 if your linker cannot handle long names. + * define BSD if you are running 4.2 BSD or later. + * define SYSV if you are running under System V. + * define DEBUG=1 to compile in debugging ('set -o debug' to turn on) + * define DEBUG=2 to compile in and turn on debugging. + * define DO_SHAREDVFORK to indicate that vfork(2) shares its address + * with its parent. + * + * When debugging is on, debugging info will be written to ./trace and + * a quit signal will generate a core dump. + */ + +#include <sys/param.h> + +#ifndef JOBS +#define JOBS 1 +#endif +#ifndef BSD +#define BSD 1 +#endif + +#ifndef DO_SHAREDVFORK +#if __NetBSD_Version__ >= 104000000 +#define DO_SHAREDVFORK +#endif +#endif + +typedef void *pointer; +#ifndef NULL +#define NULL (void *)0 +#endif +#define STATIC static +#define MKINIT /* empty */ + +extern char nullstr[1]; /* null string */ + + +#ifdef DEBUG +#define TRACE(param) trace param +#define TRACEV(param) tracev param +#else +#define TRACE(param) +#define TRACEV(param) +#endif + +#if defined(__GNUC__) && __GNUC__ < 3 +#define va_copy __va_copy +#endif + +#if !defined(__GNUC__) || (__GNUC__ == 2 && __GNUC_MINOR__ < 96) +#define __builtin_expect(x, expected_value) (x) +#endif + +#define likely(x) __builtin_expect(!!(x),1) +#define unlikely(x) __builtin_expect(!!(x),0) + +/* + * Hack to calculate maximum length. + * (length * 8 - 1) * log10(2) + 1 + 1 + 12 + * The second 1 is for the minus sign and the 12 is a safety margin. + */ +static inline int max_int_length(int bytes) +{ + return (bytes * 8 - 1) * 0.30102999566398119521 + 14; +} diff --git a/bin/dash/src/show.c b/bin/dash/src/show.c new file mode 100644 index 00000000..4a049e93 --- /dev/null +++ b/bin/dash/src/show.c @@ -0,0 +1,406 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <stdio.h> +#include <stdarg.h> + +#include "shell.h" +#include "parser.h" +#include "nodes.h" +#include "mystring.h" +#include "show.h" +#include "options.h" + + +#ifdef DEBUG +static void shtree(union node *, int, char *, FILE*); +static void shcmd(union node *, FILE *); +static void sharg(union node *, FILE *); +static void indent(int, char *, FILE *); +static void trstring(char *); + + +void +showtree(union node *n) +{ + trputs("showtree called\n"); + shtree(n, 1, NULL, stdout); +} + + +static void +shtree(union node *n, int ind, char *pfx, FILE *fp) +{ + struct nodelist *lp; + const char *s; + + if (n == NULL) + return; + + indent(ind, pfx, fp); + switch(n->type) { + case NSEMI: + s = "; "; + goto binop; + case NAND: + s = " && "; + goto binop; + case NOR: + s = " || "; +binop: + shtree(n->nbinary.ch1, ind, NULL, fp); + /* if (ind < 0) */ + fputs(s, fp); + shtree(n->nbinary.ch2, ind, NULL, fp); + break; + case NCMD: + shcmd(n, fp); + if (ind >= 0) + putc('\n', fp); + break; + case NPIPE: + for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) { + shcmd(lp->n, fp); + if (lp->next) + fputs(" | ", fp); + } + if (n->npipe.backgnd) + fputs(" &", fp); + if (ind >= 0) + putc('\n', fp); + break; + default: + fprintf(fp, "<node type %d>", n->type); + if (ind >= 0) + putc('\n', fp); + break; + } +} + + + +static void +shcmd(union node *cmd, FILE *fp) +{ + union node *np; + int first; + const char *s; + int dftfd; + + first = 1; + for (np = cmd->ncmd.args ; np ; np = np->narg.next) { + if (! first) + putchar(' '); + sharg(np, fp); + first = 0; + } + for (np = cmd->ncmd.redirect ; np ; np = np->nfile.next) { + if (! first) + putchar(' '); + switch (np->nfile.type) { + case NTO: s = ">"; dftfd = 1; break; + case NCLOBBER: s = ">|"; dftfd = 1; break; + case NAPPEND: s = ">>"; dftfd = 1; break; + case NTOFD: s = ">&"; dftfd = 1; break; + case NFROM: s = "<"; dftfd = 0; break; + case NFROMFD: s = "<&"; dftfd = 0; break; + case NFROMTO: s = "<>"; dftfd = 0; break; + default: s = "*error*"; dftfd = 0; break; + } + if (np->nfile.fd != dftfd) + fprintf(fp, "%d", np->nfile.fd); + fputs(s, fp); + if (np->nfile.type == NTOFD || np->nfile.type == NFROMFD) { + fprintf(fp, "%d", np->ndup.dupfd); + } else { + sharg(np->nfile.fname, fp); + } + first = 0; + } +} + + + +static void +sharg(union node *arg, FILE *fp) +{ + char *p; + struct nodelist *bqlist; + int subtype; + + if (arg->type != NARG) { + printf("<node type %d>\n", arg->type); + abort(); + } + bqlist = arg->narg.backquote; + for (p = arg->narg.text ; *p ; p++) { + switch ((signed char)*p) { + case CTLESC: + putc(*++p, fp); + break; + case CTLVAR: + putc('$', fp); + putc('{', fp); + subtype = *++p; + if (subtype == VSLENGTH) + putc('#', fp); + + while (*p != '=') + putc(*p++, fp); + + if (subtype & VSNUL) + putc(':', fp); + + switch (subtype & VSTYPE) { + case VSNORMAL: + putc('}', fp); + break; + case VSMINUS: + putc('-', fp); + break; + case VSPLUS: + putc('+', fp); + break; + case VSQUESTION: + putc('?', fp); + break; + case VSASSIGN: + putc('=', fp); + break; + case VSTRIMLEFT: + putc('#', fp); + break; + case VSTRIMLEFTMAX: + putc('#', fp); + putc('#', fp); + break; + case VSTRIMRIGHT: + putc('%', fp); + break; + case VSTRIMRIGHTMAX: + putc('%', fp); + putc('%', fp); + break; + case VSLENGTH: + break; + default: + printf("<subtype %d>", subtype); + } + break; + case CTLENDVAR: + putc('}', fp); + break; + case CTLBACKQ: + putc('$', fp); + putc('(', fp); + shtree(bqlist->n, -1, NULL, fp); + putc(')', fp); + break; + default: + putc(*p, fp); + break; + } + } +} + + +static void +indent(int amount, char *pfx, FILE *fp) +{ + int i; + + for (i = 0 ; i < amount ; i++) { + if (pfx && i == amount - 1) + fputs(pfx, fp); + putc('\t', fp); + } +} + + + +/* + * Debugging stuff. + */ + + +FILE *tracefile; + + +void +trputc(int c) +{ + if (debug != 1) + return; + putc(c, tracefile); +} + +void +trace(const char *fmt, ...) +{ + va_list va; + + if (debug != 1) + return; + va_start(va, fmt); + (void) vfprintf(tracefile, fmt, va); + va_end(va); +} + +void +tracev(const char *fmt, va_list va) +{ + if (debug != 1) + return; + (void) vfprintf(tracefile, fmt, va); +} + + +void +trputs(const char *s) +{ + if (debug != 1) + return; + fputs(s, tracefile); +} + + +static void +trstring(char *s) +{ + char *p; + char c; + + if (debug != 1) + return; + putc('"', tracefile); + for (p = s ; *p ; p++) { + switch ((signed char)*p) { + case '\n': c = 'n'; goto backslash; + case '\t': c = 't'; goto backslash; + case '\r': c = 'r'; goto backslash; + case '"': c = '"'; goto backslash; + case '\\': c = '\\'; goto backslash; + case CTLESC: c = 'e'; goto backslash; + case CTLVAR: c = 'v'; goto backslash; + case CTLBACKQ: c = 'q'; goto backslash; +backslash: putc('\\', tracefile); + putc(c, tracefile); + break; + default: + if (*p >= ' ' && *p <= '~') + putc(*p, tracefile); + else { + putc('\\', tracefile); + putc(*p >> 6 & 03, tracefile); + putc(*p >> 3 & 07, tracefile); + putc(*p & 07, tracefile); + } + break; + } + } + putc('"', tracefile); +} + + +void +trargs(char **ap) +{ + if (debug != 1) + return; + while (*ap) { + trstring(*ap++); + if (*ap) + putc(' ', tracefile); + else + putc('\n', tracefile); + } +} + + +void +opentrace(void) +{ + char s[100]; +#ifdef O_APPEND + int flags; +#endif + + if (debug != 1) { + if (tracefile) + fflush(tracefile); + /* leave open because libedit might be using it */ + return; + } +#ifdef not_this_way + { + char *p; + if ((p = getenv(homestr)) == NULL) { + if (geteuid() == 0) + p = "/"; + else + p = "/tmp"; + } + scopy(p, s); + strcat(s, "/trace"); + } +#else + scopy("./trace", s); +#endif /* not_this_way */ + if (tracefile) { +#ifndef __KLIBC__ + if (!freopen(s, "a", tracefile)) { +#else + if (!(!fclose(tracefile) && (tracefile = fopen(s, "a")))) { +#endif /* __KLIBC__ */ + fprintf(stderr, "Can't re-open %s\n", s); + debug = 0; + return; + } + } else { + if ((tracefile = fopen(s, "a")) == NULL) { + fprintf(stderr, "Can't open %s\n", s); + debug = 0; + return; + } + } +#ifdef O_APPEND + if ((flags = fcntl(fileno(tracefile), F_GETFL, 0)) >= 0) + fcntl(fileno(tracefile), F_SETFL, flags | O_APPEND); +#endif +#ifndef __KLIBC__ + setlinebuf(tracefile); +#endif /* __KLIBC__ */ + fputs("\nTracing started.\n", tracefile); +} +#endif /* DEBUG */ diff --git a/bin/dash/src/show.h b/bin/dash/src/show.h new file mode 100644 index 00000000..d0ccac79 --- /dev/null +++ b/bin/dash/src/show.h @@ -0,0 +1,45 @@ +/*- + * Copyright (c) 1995 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)show.h 1.1 (Berkeley) 5/4/95 + */ + +#include <stdarg.h> + +#ifdef DEBUG +union node; +void showtree(union node *); +void trace(const char *, ...); +void tracev(const char *, va_list); +void trargs(char **); +void trputc(int); +void trputs(const char *); +void opentrace(void); +#endif diff --git a/bin/dash/src/system.c b/bin/dash/src/system.c new file mode 100644 index 00000000..844a6410 --- /dev/null +++ b/bin/dash/src/system.c @@ -0,0 +1,199 @@ +/* + * Copyright (c) 2004 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef HAVE_ISALPHA +#define isalnum _isalnum +#define iscntrl _iscntrl +#define islower _islower +#define isspace _isspace +#define isalpha _isalpha +#define isdigit _isdigit +#define isprint _isprint +#define isupper _isupper +#define isblank _isblank +#define isgraph _isgraph +#define ispunct _ispunct +#define isxdigit _isxdigit +#include <ctype.h> +#undef isalnum +#undef iscntrl +#undef islower +#undef isspace +#undef isalpha +#undef isdigit +#undef isprint +#undef isupper +#undef isblank +#undef isgraph +#undef ispunct +#undef isxdigit +#endif + +#include <signal.h> +#include <string.h> + +#include "error.h" +#include "output.h" +#include "system.h" + +#ifndef HAVE_MEMPCPY +void *mempcpy(void *dest, const void *src, size_t n) +{ + return memcpy(dest, src, n) + n; +} +#endif + +#ifndef HAVE_STPCPY +char *stpcpy(char *dest, const char *src) +{ + size_t len = strlen(src); + dest[len] = 0; + return mempcpy(dest, src, len); +} +#endif + +#ifndef HAVE_STRCHRNUL +char *strchrnul(const char *s, int c) +{ + char *p = strchr(s, c); + if (!p) + p = (char *)s + strlen(s); + return p; +} +#endif + +#ifndef HAVE_STRSIGNAL +char *strsignal(int sig) +{ + static char buf[19]; + + if ((unsigned)sig < NSIG && sys_siglist[sig]) + return (char *)sys_siglist[sig]; + fmtstr(buf, sizeof(buf), "Signal %d", sig); + return buf; +} +#endif + +#ifndef HAVE_BSEARCH +void *bsearch(const void *key, const void *base, size_t nmemb, + size_t size, int (*cmp)(const void *, const void *)) +{ + while (nmemb) { + size_t mididx = nmemb / 2; + const void *midobj = base + mididx * size; + int diff = cmp(key, midobj); + + if (diff == 0) + return (void *)midobj; + + if (diff > 0) { + base = midobj + size; + nmemb -= mididx + 1; + } else + nmemb = mididx; + } + + return 0; +} +#endif + +#ifndef HAVE_SYSCONF +long sysconf(int name) +{ + sh_error("no sysconf for: %d", name); +} +#endif + +#ifndef HAVE_ISALPHA +int isalnum(int c) { + return _isalnum(c); +} + + +int iscntrl(int c) { + return _iscntrl(c); +} + + +int islower(int c) { + return _islower(c); +} + + +int isspace(int c) { + return _isspace(c); +} + + +int isalpha(int c) { + return _isalpha(c); +} + + +int isdigit(int c) { + return _isdigit(c); +} + + +int isprint(int c) { + return _isprint(c); +} + + +int isupper(int c) { + return _isupper(c); +} + + +#if HAVE_DECL_ISBLANK +int isblank(int c) { + return _isblank(c); +} +#endif + + +int isgraph(int c) { + return _isgraph(c); +} + + +int ispunct(int c) { + return _ispunct(c); +} + + +int isxdigit(int c) { + return _isxdigit(c); +} +#endif + +#if !HAVE_DECL_ISBLANK +int isblank(int c) { + return c == ' ' || c == '\t'; +} +#endif diff --git a/bin/dash/src/system.h b/bin/dash/src/system.h new file mode 100644 index 00000000..007952c5 --- /dev/null +++ b/bin/dash/src/system.h @@ -0,0 +1,118 @@ +/* + * Copyright (c) 2004 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <limits.h> +#include <signal.h> +#include <sys/types.h> + +#ifndef SSIZE_MAX +#define SSIZE_MAX ((ssize_t)((size_t)-1 >> 1)) +#endif + +static inline void sigclearmask(void) +{ +#if defined(HAVE_SIGSETMASK) && \ + (!defined(__GLIBC__) || \ + (defined(__GNUC__) && (__GNUC__ * 1000 + __GNUC_MINOR__) >= 4006)) +#ifdef __GLIBC__ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif + sigsetmask(0); +#ifdef __GLIBC__ +#pragma GCC diagnostic pop +#endif +#else + sigset_t set; + sigemptyset(&set); + sigprocmask(SIG_SETMASK, &set, 0); +#endif +} + +#ifndef HAVE_MEMPCPY +void *mempcpy(void *, const void *, size_t); +#endif + +#ifndef HAVE_STPCPY +char *stpcpy(char *, const char *); +#endif + +#ifndef HAVE_STRCHRNUL +char *strchrnul(const char *, int); +#endif + +#ifndef HAVE_STRSIGNAL +char *strsignal(int); +#endif + +#ifndef HAVE_STRTOD +static inline double strtod(const char *nptr, char **endptr) +{ + *endptr = (char *)nptr; + return 0; +} +#endif + +#ifndef HAVE_STRTOIMAX +#define strtoimax strtoll +#endif + +#ifndef HAVE_STRTOUMAX +#define strtoumax strtoull +#endif + +#ifndef HAVE_BSEARCH +void *bsearch(const void *, const void *, size_t, size_t, + int (*)(const void *, const void *)); +#endif + +#ifndef HAVE_KILLPG +static inline int killpg(pid_t pid, int signal) +{ +#ifdef DEBUG + if (pid < 0) + abort(); +#endif + return kill(-pid, signal); +} +#endif + +#ifndef HAVE_SYSCONF +#define _SC_CLK_TCK 2 +long sysconf(int) __attribute__((__noreturn__)); +#endif + +#if !HAVE_DECL_ISBLANK +int isblank(int c); +#endif + +/* + * A trick to suppress uninitialized variable warning without generating any + * code + */ +#define uninitialized_var(x) x = x diff --git a/bin/dash/src/trap.c b/bin/dash/src/trap.c new file mode 100644 index 00000000..cd84814f --- /dev/null +++ b/bin/dash/src/trap.c @@ -0,0 +1,446 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <signal.h> +#include <unistd.h> +#include <stdlib.h> +#include <string.h> + +#include "shell.h" +#include "main.h" +#include "nodes.h" /* for other headers */ +#include "eval.h" +#include "init.h" +#include "jobs.h" +#include "show.h" +#include "options.h" +#include "syntax.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "trap.h" +#include "mystring.h" + +/* + * Sigmode records the current value of the signal handlers for the various + * modes. A value of zero means that the current handler is not known. + * S_HARD_IGN indicates that the signal was ignored on entry to the shell, + */ + +#define S_DFL 1 /* default signal handling (SIG_DFL) */ +#define S_CATCH 2 /* signal is caught */ +#define S_IGN 3 /* signal is ignored (SIG_IGN) */ +#define S_HARD_IGN 4 /* signal is ignored permenantly */ +#define S_RESET 5 /* temporary - to reset a hard ignored sig */ + + +/* trap handler commands */ +MKINIT char *trap[NSIG]; +/* number of non-null traps */ +int trapcnt; +/* current value of signal */ +char sigmode[NSIG - 1]; +/* indicates specified signal received */ +static char gotsig[NSIG - 1]; +/* last pending signal */ +volatile sig_atomic_t pending_sig; +/* received SIGCHLD */ +volatile sig_atomic_t gotsigchld; + +extern char *signal_names[]; + +static int decode_signum(const char *); + +#ifdef mkinit +INCLUDE "memalloc.h" +INCLUDE "trap.h" + +INIT { + sigmode[SIGCHLD - 1] = S_DFL; + setsignal(SIGCHLD); +} + +FORKRESET { + char **tp; + + INTOFF; + for (tp = trap ; tp < &trap[NSIG] ; tp++) { + if (*tp && **tp) { /* trap not NULL or SIG_IGN */ + ckfree(*tp); + *tp = NULL; + if (tp != &trap[0]) + setsignal(tp - trap); + } + } + trapcnt = 0; + INTON; +} +#endif + +/* + * The trap builtin. + */ + +int +trapcmd(int argc, char **argv) +{ + char *action; + char **ap; + int signo; + + nextopt(nullstr); + ap = argptr; + if (!*ap) { + for (signo = 0 ; signo < NSIG ; signo++) { + if (trap[signo] != NULL) { + out1fmt( + "trap -- %s %s\n", + single_quote(trap[signo]), + signal_names[signo] + ); + } + } + return 0; + } + if (!ap[1] || decode_signum(*ap) >= 0) + action = NULL; + else + action = *ap++; + while (*ap) { + if ((signo = decode_signal(*ap, 0)) < 0) { + outfmt(out2, "trap: %s: bad trap\n", *ap); + return 1; + } + INTOFF; + if (action) { + if (action[0] == '-' && action[1] == '\0') + action = NULL; + else { + if (*action) + trapcnt++; + action = savestr(action); + } + } + if (trap[signo]) { + if (*trap[signo]) + trapcnt--; + ckfree(trap[signo]); + } + trap[signo] = action; + if (signo != 0) + setsignal(signo); + INTON; + ap++; + } + return 0; +} + + + +/* + * Set the signal handler for the specified signal. The routine figures + * out what it should be set to. + */ + +void +setsignal(int signo) +{ + int action; + int lvforked; + char *t, tsig; + struct sigaction act; + + lvforked = vforked; + + if ((t = trap[signo]) == NULL) + action = S_DFL; + else if (*t != '\0') + action = S_CATCH; + else + action = S_IGN; + if (rootshell && action == S_DFL && !lvforked) { + switch (signo) { + case SIGINT: + if (iflag || minusc || sflag == 0) + action = S_CATCH; + break; + case SIGQUIT: +#ifdef DEBUG + if (debug) + break; +#endif + /* FALLTHROUGH */ + case SIGTERM: + if (iflag) + action = S_IGN; + break; +#if JOBS + case SIGTSTP: + case SIGTTOU: + if (mflag) + action = S_IGN; + break; +#endif + } + } + + if (signo == SIGCHLD) + action = S_CATCH; + + t = &sigmode[signo - 1]; + tsig = *t; + if (tsig == 0) { + /* + * current setting unknown + */ + if (sigaction(signo, 0, &act) == -1) { + /* + * Pretend it worked; maybe we should give a warning + * here, but other shells don't. We don't alter + * sigmode, so that we retry every time. + */ + return; + } + if (act.sa_handler == SIG_IGN) { + if (mflag && (signo == SIGTSTP || + signo == SIGTTIN || signo == SIGTTOU)) { + tsig = S_IGN; /* don't hard ignore these */ + } else + tsig = S_HARD_IGN; + } else { + tsig = S_RESET; /* force to be set */ + } + } + if (tsig == S_HARD_IGN || tsig == action) + return; + switch (action) { + case S_CATCH: + act.sa_handler = onsig; + break; + case S_IGN: + act.sa_handler = SIG_IGN; + break; + default: + act.sa_handler = SIG_DFL; + } + if (!lvforked) + *t = action; + act.sa_flags = 0; + sigfillset(&act.sa_mask); + sigaction(signo, &act, 0); +} + +/* + * Ignore a signal. + */ + +void +ignoresig(int signo) +{ + if (sigmode[signo - 1] != S_IGN && sigmode[signo - 1] != S_HARD_IGN) { + signal(signo, SIG_IGN); + } + if (!vforked) + sigmode[signo - 1] = S_HARD_IGN; +} + + + +/* + * Signal handler. + */ + +void +onsig(int signo) +{ + if (vforked) + return; + + if (signo == SIGCHLD) { + gotsigchld = 1; + if (!trap[SIGCHLD]) + return; + } + + gotsig[signo - 1] = 1; + pending_sig = signo; + + if (signo == SIGINT && !trap[SIGINT]) { + if (!suppressint) + onint(); + intpending = 1; + } +} + + + +/* + * Called to execute a trap. Perhaps we should avoid entering new trap + * handlers while we are executing a trap handler. + */ + +void dotrap(void) +{ + char *p; + char *q; + int i; + int status, last_status; + + if (!pending_sig) + return; + + status = savestatus; + last_status = status; + if (likely(status < 0)) { + status = exitstatus; + savestatus = status; + } + pending_sig = 0; + barrier(); + + for (i = 0, q = gotsig; i < NSIG - 1; i++, q++) { + if (!*q) + continue; + + if (evalskip) { + pending_sig = i + 1; + break; + } + + *q = 0; + + p = trap[i + 1]; + if (!p) + continue; + evalstring(p, 0); + if (evalskip != SKIPFUNC) + exitstatus = status; + } + + savestatus = last_status; +} + + + +/* + * Controls whether the shell is interactive or not. + */ + + +void +setinteractive(int on) +{ + static int is_interactive; + + if (++on == is_interactive) + return; + is_interactive = on; + setsignal(SIGINT); + setsignal(SIGQUIT); + setsignal(SIGTERM); +} + + + +/* + * Called to exit the shell. + */ + +void +exitshell(void) +{ + struct jmploc loc; + char *p; + + savestatus = exitstatus; + TRACE(("pid %d, exitshell(%d)\n", getpid(), savestatus)); + if (setjmp(loc.loc)) + goto out; + handler = &loc; + if ((p = trap[0])) { + trap[0] = NULL; + evalskip = 0; + evalstring(p, 0); + evalskip = SKIPFUNCDEF; + } +out: + exitreset(); + /* + * Disable job control so that whoever had the foreground before we + * started can get it back. + */ + if (likely(!setjmp(loc.loc))) + setjobctl(0); + flushall(); + _exit(exitstatus); + /* NOTREACHED */ +} + +static int decode_signum(const char *string) +{ + int signo = -1; + + if (is_number(string)) { + signo = atoi(string); + if (signo >= NSIG) + signo = -1; + } + + return signo; +} + +int decode_signal(const char *string, int minsig) +{ + int signo; + + signo = decode_signum(string); + if (signo >= 0) + return signo; + + for (signo = minsig; signo < NSIG; signo++) { + if (!strcasecmp(string, signal_names[signo])) { + return signo; + } + } + + return -1; +} + +void sigblockall(sigset_t *oldmask) +{ + sigset_t mask; + + sigfillset(&mask); + sigprocmask(SIG_SETMASK, &mask, oldmask); +} diff --git a/bin/dash/src/trap.h b/bin/dash/src/trap.h new file mode 100644 index 00000000..beaf6605 --- /dev/null +++ b/bin/dash/src/trap.h @@ -0,0 +1,57 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)trap.h 8.3 (Berkeley) 6/5/95 + */ + +#include <signal.h> + +extern int trapcnt; +extern char sigmode[]; +extern volatile sig_atomic_t pending_sig; +extern volatile sig_atomic_t gotsigchld; + +int trapcmd(int, char **); +void setsignal(int); +void ignoresig(int); +void onsig(int); +void dotrap(void); +void setinteractive(int); +void exitshell(void) __attribute__((__noreturn__)); +int decode_signal(const char *, int); +void sigblockall(sigset_t *oldmask); + +static inline int have_traps(void) +{ + return trapcnt; +} diff --git a/bin/dash/src/var.c b/bin/dash/src/var.c new file mode 100644 index 00000000..ca9504ef --- /dev/null +++ b/bin/dash/src/var.c @@ -0,0 +1,676 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif + +/* + * Shell variables. + */ + +#include "shell.h" +#include "output.h" +#include "expand.h" +#include "nodes.h" /* for other headers */ +#include "exec.h" +#include "syntax.h" +#include "options.h" +#include "mail.h" +#include "var.h" +#include "memalloc.h" +#include "error.h" +#include "mystring.h" +#include "parser.h" +#include "show.h" +#ifndef SMALL +#include "myhistedit.h" +#endif +#include "system.h" + + +#define VTABSIZE 39 + + +struct localvar_list { + struct localvar_list *next; + struct localvar *lv; +}; + +MKINIT struct localvar_list *localvar_stack; + +const char defpathvar[] = + "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"; +char defifsvar[] = "IFS= \t\n"; +MKINIT char defoptindvar[] = "OPTIND=1"; + +int lineno; +char linenovar[sizeof("LINENO=")+sizeof(int)*CHAR_BIT/3+1] = "LINENO="; + +/* Some macros in var.h depend on the order, add new variables to the end. */ +struct var varinit[] = { +#if ATTY + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "ATTY\0", 0 }, +#endif + { 0, VSTRFIXED|VTEXTFIXED, defifsvar, 0 }, + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "MAIL\0", changemail }, + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "MAILPATH\0", changemail }, + { 0, VSTRFIXED|VTEXTFIXED, defpathvar, changepath }, + { 0, VSTRFIXED|VTEXTFIXED, "PS1=$ ", 0 }, + { 0, VSTRFIXED|VTEXTFIXED, "PS2=> ", 0 }, + { 0, VSTRFIXED|VTEXTFIXED, "PS4=+ ", 0 }, + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "RPS1\0", 0 }, + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "RPS2\0", 0 }, + { 0, VSTRFIXED|VTEXTFIXED, defoptindvar, getoptsreset }, +#ifdef WITH_LINENO + { 0, VSTRFIXED|VTEXTFIXED, linenovar, 0 }, +#endif +#ifndef SMALL + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "TERM\0", 0 }, + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "HISTSIZE\0", sethistsize }, +#endif +}; + +STATIC struct var *vartab[VTABSIZE]; + +STATIC struct var **hashvar(const char *); +STATIC int vpcmp(const void *, const void *); +STATIC struct var **findvar(struct var **, const char *); + +/* + * Initialize the varable symbol tables and import the environment + */ + +#ifdef mkinit +INCLUDE <unistd.h> +INCLUDE <sys/types.h> +INCLUDE <sys/stat.h> +INCLUDE "cd.h" +INCLUDE "output.h" +INCLUDE "var.h" +MKINIT char **environ; +INIT { + char **envp; + static char ppid[32] = "PPID="; + const char *p; + struct stat64 st1, st2; + + initvar(); + for (envp = environ ; *envp ; envp++) { + p = endofname(*envp); + if (p != *envp && *p == '=') { + setvareq(*envp, VEXPORT|VTEXTFIXED); + } + } + + setvareq(defifsvar, VTEXTFIXED); + setvareq(defoptindvar, VTEXTFIXED); + + fmtstr(ppid + 5, sizeof(ppid) - 5, "%ld", (long) getppid()); + setvareq(ppid, VTEXTFIXED); + + p = lookupvar("PWD"); + if (p) + if (*p != '/' || stat64(p, &st1) || stat64(".", &st2) || + st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino) + p = 0; + setpwd(p, 0); +} + +RESET { + unwindlocalvars(0); +} +#endif + + +/* + * This routine initializes the builtin variables. It is called when the + * shell is initialized. + */ + +void +initvar(void) +{ + struct var *vp; + struct var *end; + struct var **vpp; + + vp = varinit; + end = vp + sizeof(varinit) / sizeof(varinit[0]); + do { + vpp = hashvar(vp->text); + vp->next = *vpp; + *vpp = vp; + } while (++vp < end); + /* + * PS1 depends on uid + */ + if (!geteuid()) + vps1.text = "PS1=# "; +} + +/* + * Set the value of a variable. The flags argument is ored with the + * flags of the variable. If val is NULL, the variable is unset. + */ + +struct var *setvar(const char *name, const char *val, int flags) +{ + char *p, *q; + size_t namelen; + char *nameeq; + size_t vallen; + struct var *vp; + + q = endofname(name); + p = strchrnul(q, '='); + namelen = p - name; + if (!namelen || p != q) + sh_error("%.*s: bad variable name", namelen, name); + vallen = 0; + if (val == NULL) { + flags |= VUNSET; + } else { + vallen = strlen(val); + } + INTOFF; + p = mempcpy(nameeq = ckmalloc(namelen + vallen + 2), name, namelen); + if (val) { + *p++ = '='; + p = mempcpy(p, val, vallen); + } + *p = '\0'; + vp = setvareq(nameeq, flags | VNOSAVE); + INTON; + + return vp; +} + +/* + * Set the given integer as the value of a variable. The flags argument is + * ored with the flags of the variable. + */ + +intmax_t setvarint(const char *name, intmax_t val, int flags) +{ + int len = max_int_length(sizeof(val)); + char buf[len]; + + fmtstr(buf, len, "%" PRIdMAX, val); + setvar(name, buf, flags); + return val; +} + + + +/* + * Same as setvar except that the variable and value are passed in + * the first argument as name=value. Since the first argument will + * be actually stored in the table, it should not be a string that + * will go away. + * Called with interrupts off. + */ + +struct var *setvareq(char *s, int flags) +{ + struct var *vp, **vpp; + + vpp = hashvar(s); + flags |= (VEXPORT & (((unsigned) (1 - aflag)) - 1)); + vpp = findvar(vpp, s); + vp = *vpp; + if (vp) { + if (vp->flags & VREADONLY) { + const char *n; + + if (flags & VNOSAVE) + free(s); + n = vp->text; + sh_error("%.*s: is read only", strchrnul(n, '=') - n, + n); + } + + if (flags & VNOSET) + goto out; + + if (vp->func && (flags & VNOFUNC) == 0) + (*vp->func)(strchrnul(s, '=') + 1); + + if ((vp->flags & (VTEXTFIXED|VSTACK)) == 0) + ckfree(vp->text); + + if (((flags & (VEXPORT|VREADONLY|VSTRFIXED|VUNSET)) | + (vp->flags & VSTRFIXED)) == VUNSET) { + *vpp = vp->next; + ckfree(vp); +out_free: + if ((flags & (VTEXTFIXED|VSTACK|VNOSAVE)) == VNOSAVE) + ckfree(s); + goto out; + } + + flags |= vp->flags & ~(VTEXTFIXED|VSTACK|VNOSAVE|VUNSET); + } else { + if (flags & VNOSET) + goto out; + if ((flags & (VEXPORT|VREADONLY|VSTRFIXED|VUNSET)) == VUNSET) + goto out_free; + /* not found */ + vp = ckmalloc(sizeof (*vp)); + vp->next = *vpp; + vp->func = NULL; + *vpp = vp; + } + if (!(flags & (VTEXTFIXED|VSTACK|VNOSAVE))) + s = savestr(s); + vp->text = s; + vp->flags = flags; + +out: + return vp; +} + +/* + * Find the value of a variable. Returns NULL if not set. + */ + +char * +lookupvar(const char *name) +{ + struct var *v; + + if ((v = *findvar(hashvar(name), name)) && !(v->flags & VUNSET)) { +#ifdef WITH_LINENO + if (v == &vlineno && v->text == linenovar) { + fmtstr(linenovar+7, sizeof(linenovar)-7, "%d", lineno); + } +#endif + return strchrnul(v->text, '=') + 1; + } + return NULL; +} + +intmax_t lookupvarint(const char *name) +{ + return atomax(lookupvar(name) ?: nullstr, 0); +} + + + +/* + * Generate a list of variables satisfying the given conditions. + */ + +char ** +listvars(int on, int off, char ***end) +{ + struct var **vpp; + struct var *vp; + char **ep; + int mask; + + STARTSTACKSTR(ep); + vpp = vartab; + mask = on | off; + do { + for (vp = *vpp ; vp ; vp = vp->next) + if ((vp->flags & mask) == on) { + if (ep == stackstrend()) + ep = growstackstr(); + *ep++ = (char *) vp->text; + } + } while (++vpp < vartab + VTABSIZE); + if (ep == stackstrend()) + ep = growstackstr(); + if (end) + *end = ep; + *ep++ = NULL; + return grabstackstr(ep); +} + + + +/* + * POSIX requires that 'set' (but not export or readonly) output the + * variables in lexicographic order - by the locale's collating order (sigh). + * Maybe we could keep them in an ordered balanced binary tree + * instead of hashed lists. + * For now just roll 'em through qsort for printing... + */ + +int +showvars(const char *prefix, int on, int off) +{ + const char *sep; + char **ep, **epend; + + ep = listvars(on, off, &epend); + qsort(ep, epend - ep, sizeof(char *), vpcmp); + + sep = *prefix ? spcstr : prefix; + + for (; ep < epend; ep++) { + const char *p; + const char *q; + + p = strchrnul(*ep, '='); + q = nullstr; + if (*p) + q = single_quote(++p); + + out1fmt("%s%s%.*s%s\n", prefix, sep, (int)(p - *ep), *ep, q); + } + + return 0; +} + + + +/* + * The export and readonly commands. + */ + +int +exportcmd(int argc, char **argv) +{ + struct var *vp; + char *name; + const char *p; + char **aptr; + int flag = argv[0][0] == 'r'? VREADONLY : VEXPORT; + int notp; + + notp = nextopt("p") - 'p'; + if (notp && ((name = *(aptr = argptr)))) { + do { + if ((p = strchr(name, '=')) != NULL) { + p++; + } else { + if ((vp = *findvar(hashvar(name), name))) { + vp->flags |= flag; + continue; + } + } + setvar(name, p, flag); + } while ((name = *++aptr) != NULL); + } else { + showvars(argv[0], flag, 0); + } + return 0; +} + + +/* + * The "local" command. + */ + +int +localcmd(int argc, char **argv) +{ + char *name; + + if (!localvar_stack) + sh_error("not in a function"); + + argv = argptr; + while ((name = *argv++) != NULL) { + mklocal(name, 0); + } + return 0; +} + + +/* + * Make a variable a local variable. When a variable is made local, it's + * value and flags are saved in a localvar structure. The saved values + * will be restored when the shell function returns. We handle the name + * "-" as a special case. + */ + +void mklocal(char *name, int flags) +{ + struct localvar *lvp; + struct var **vpp; + struct var *vp; + + INTOFF; + lvp = ckmalloc(sizeof (struct localvar)); + if (name[0] == '-' && name[1] == '\0') { + char *p; + p = ckmalloc(sizeof(optlist)); + lvp->text = memcpy(p, optlist, sizeof(optlist)); + vp = NULL; + } else { + char *eq; + + vpp = hashvar(name); + vp = *findvar(vpp, name); + eq = strchr(name, '='); + if (vp == NULL) { + if (eq) + vp = setvareq(name, VSTRFIXED | flags); + else + vp = setvar(name, NULL, VSTRFIXED | flags); + lvp->flags = VUNSET; + } else { + lvp->text = vp->text; + lvp->flags = vp->flags; + vp->flags |= VSTRFIXED|VTEXTFIXED; + if (eq) + setvareq(name, flags); + } + } + lvp->vp = vp; + lvp->next = localvar_stack->lv; + localvar_stack->lv = lvp; + INTON; +} + + +/* + * Called after a function returns. + * Interrupts must be off. + */ + +static void +poplocalvars(void) +{ + struct localvar_list *ll; + struct localvar *lvp, *next; + struct var *vp; + + INTOFF; + ll = localvar_stack; + localvar_stack = ll->next; + + next = ll->lv; + ckfree(ll); + + while ((lvp = next) != NULL) { + next = lvp->next; + vp = lvp->vp; + TRACE(("poplocalvar %s\n", vp ? vp->text : "-")); + if (vp == NULL) { /* $- saved */ + memcpy(optlist, lvp->text, sizeof(optlist)); + ckfree(lvp->text); + optschanged(); + } else if (lvp->flags == VUNSET) { + vp->flags &= ~(VSTRFIXED|VREADONLY); + unsetvar(vp->text); + } else { + if (vp->func) + (*vp->func)(strchrnul(lvp->text, '=') + 1); + if ((vp->flags & (VTEXTFIXED|VSTACK)) == 0) + ckfree(vp->text); + vp->flags = lvp->flags; + vp->text = lvp->text; + } + ckfree(lvp); + } + INTON; +} + + +/* + * Create a new localvar environment. + */ +struct localvar_list *pushlocalvars(int push) +{ + struct localvar_list *ll; + struct localvar_list *top; + + top = localvar_stack; + if (!push) + goto out; + + INTOFF; + ll = ckmalloc(sizeof(*ll)); + ll->lv = NULL; + ll->next = top; + localvar_stack = ll; + INTON; + +out: + return top; +} + + +void unwindlocalvars(struct localvar_list *stop) +{ + while (localvar_stack != stop) + poplocalvars(); +} + + +/* + * The unset builtin command. We unset the function before we unset the + * variable to allow a function to be unset when there is a readonly variable + * with the same name. + */ + +int +unsetcmd(int argc, char **argv) +{ + char **ap; + int i; + int flag = 0; + + while ((i = nextopt("vf")) != '\0') { + flag = i; + } + + for (ap = argptr; *ap ; ap++) { + if (flag != 'f') { + unsetvar(*ap); + continue; + } + if (flag != 'v') + unsetfunc(*ap); + } + return 0; +} + + +/* + * Unset the specified variable. + */ + +void unsetvar(const char *s) +{ + setvar(s, 0, 0); +} + + + +/* + * Find the appropriate entry in the hash table from the name. + */ + +STATIC struct var ** +hashvar(const char *p) +{ + unsigned int hashval; + + hashval = ((unsigned char) *p) << 4; + while (*p && *p != '=') + hashval += (unsigned char) *p++; + return &vartab[hashval % VTABSIZE]; +} + + + +/* + * Compares two strings up to the first = or '\0'. The first + * string must be terminated by '='; the second may be terminated by + * either '=' or '\0'. + */ + +int +varcmp(const char *p, const char *q) +{ + int c, d; + + while ((c = *p) == (d = *q)) { + if (!c || c == '=') + goto out; + p++; + q++; + } + if (c == '=') + c = 0; + if (d == '=') + d = 0; +out: + return c - d; +} + +STATIC int +vpcmp(const void *a, const void *b) +{ + return varcmp(*(const char **)a, *(const char **)b); +} + +STATIC struct var ** +findvar(struct var **vpp, const char *name) +{ + for (; *vpp; vpp = &(*vpp)->next) { + if (varequal((*vpp)->text, name)) { + break; + } + } + return vpp; +} diff --git a/bin/dash/src/var.h b/bin/dash/src/var.h new file mode 100644 index 00000000..1d1d87a5 --- /dev/null +++ b/bin/dash/src/var.h @@ -0,0 +1,173 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)var.h 8.2 (Berkeley) 5/4/95 + */ + +#include <inttypes.h> + +/* + * Shell variables. + */ + +/* flags */ +#define VEXPORT 0x01 /* variable is exported */ +#define VREADONLY 0x02 /* variable cannot be modified */ +#define VSTRFIXED 0x04 /* variable struct is statically allocated */ +#define VTEXTFIXED 0x08 /* text is statically allocated */ +#define VSTACK 0x10 /* text is allocated on the stack */ +#define VUNSET 0x20 /* the variable is not set */ +#define VNOFUNC 0x40 /* don't call the callback function */ +#define VNOSET 0x80 /* do not set variable - just readonly test */ +#define VNOSAVE 0x100 /* when text is on the heap before setvareq */ + + +struct var { + struct var *next; /* next entry in hash list */ + int flags; /* flags are defined above */ + const char *text; /* name=value */ + void (*func)(const char *); + /* function to be called when */ + /* the variable gets set/unset */ +}; + + +struct localvar { + struct localvar *next; /* next local variable in list */ + struct var *vp; /* the variable that was made local */ + int flags; /* saved flags */ + const char *text; /* saved text */ +}; + +struct localvar_list; + + +extern struct localvar *localvars; +extern struct var varinit[]; + +#if ATTY +#define vatty varinit[0] +#define vifs varinit[1] +#else +#define vifs varinit[0] +#endif +#define vmail (&vifs)[1] +#define vmpath (&vmail)[1] +#define vpath (&vmpath)[1] +#define vps1 (&vpath)[1] +#define vps2 (&vps1)[1] +#define vps4 (&vps2)[1] +#define vrps1 (&vps4)[1] +#define vrps2 (&vrps1)[1] +#define voptind (&vrps2)[1] +#ifdef WITH_LINENO +#define vlineno (&voptind)[1] +#endif +#ifndef SMALL +#ifdef WITH_LINENO +#define vterm (&vlineno)[1] +#else +#define vterm (&voptind)[1] +#endif +#define vhistsize (&vterm)[1] +#endif + +extern char defifsvar[]; +#define defifs (defifsvar + 4) +extern const char defpathvar[]; +#define defpath (defpathvar + 36) + +extern int lineno; +extern char linenovar[]; + +/* + * The following macros access the values of the above variables. + * They have to skip over the name. They return the null string + * for unset variables. + */ + +#define ifsval() (vifs.text + 4) +#define ifsset() ((vifs.flags & VUNSET) == 0) +#define mailval() (vmail.text + 5) +#define mpathval() (vmpath.text + 9) +#define pathval() (vpath.text + 5) +#define ps1val() (vps1.text + 4) +#define ps2val() (vps2.text + 4) +#define ps4val() (vps4.text + 4) +#define rps1val() (vrps1.text + 5) +#define rps2val() (vrps2.text + 5) +#define optindval() (voptind.text + 7) +#define linenoval() (vlineno.text + 7) +#ifndef SMALL +#define histsizeval() (vhistsize.text + 9) +#define termval() (vterm.text + 5) +#endif + +#if ATTY +#define attyset() ((vatty.flags & VUNSET) == 0) +#endif +#define mpathset() ((vmpath.flags & VUNSET) == 0) + +void initvar(void); +struct var *setvar(const char *name, const char *val, int flags); +intmax_t setvarint(const char *, intmax_t, int); +struct var *setvareq(char *s, int flags); +struct strlist; +char *lookupvar(const char *); +intmax_t lookupvarint(const char *); +char **listvars(int, int, char ***); +#define environment() listvars(VEXPORT, VUNSET, 0) +int showvars(const char *, int, int); +int exportcmd(int, char **); +int localcmd(int, char **); +void mklocal(char *name, int flags); +struct localvar_list *pushlocalvars(int push); +void unwindlocalvars(struct localvar_list *stop); +int unsetcmd(int, char **); +void unsetvar(const char *); +int varcmp(const char *, const char *); + +static inline int varequal(const char *a, const char *b) { + return !varcmp(a, b); +} + +/* + * Search the environment of a builtin command. + */ + +static inline char *bltinlookup(const char *name) +{ + return lookupvar(name); +} + + diff --git a/bin/dtch.c b/bin/dtch.c new file mode 100644 index 00000000..2aea53ae --- /dev/null +++ b/bin/dtch.c @@ -0,0 +1,271 @@ +/* Copyright (C) 2017-2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <poll.h> +#include <signal.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/un.h> +#include <sys/wait.h> +#include <sysexits.h> +#include <termios.h> +#include <unistd.h> + +#if defined __FreeBSD__ +#include <libutil.h> +#elif defined __linux__ +#include <pty.h> +#else +#include <util.h> +#endif + +static char _; +static struct iovec iov = { .iov_base = &_, .iov_len = 1 }; + +static ssize_t sendfd(int sock, int fd) { + size_t len = CMSG_SPACE(sizeof(int)); + char buf[len]; + struct msghdr msg = { + .msg_iov = &iov, + .msg_iovlen = 1, + .msg_control = buf, + .msg_controllen = len, + }; + + struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_len = CMSG_LEN(sizeof(int)); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_RIGHTS; + *(int *)CMSG_DATA(cmsg) = fd; + + return sendmsg(sock, &msg, 0); +} + +static int recvfd(int sock) { + size_t len = CMSG_SPACE(sizeof(int)); + char buf[len]; + struct msghdr msg = { + .msg_iov = &iov, + .msg_iovlen = 1, + .msg_control = buf, + .msg_controllen = len, + }; + if (0 > recvmsg(sock, &msg, 0)) return -1; + + struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg); + if (!cmsg || cmsg->cmsg_type != SCM_RIGHTS) { + errno = ENOMSG; + return -1; + } + return *(int *)CMSG_DATA(cmsg); +} + +static struct sockaddr_un addr = { .sun_family = AF_UNIX }; + +static void handler(int sig) { + unlink(addr.sun_path); + _exit(-sig); +} + +static void detach(int server, bool sink, char *argv[]) { + int pty; + pid_t pid = forkpty(&pty, NULL, NULL, NULL); + if (pid < 0) err(EX_OSERR, "forkpty"); + + if (!pid) { + execvp(argv[0], argv); + err(EX_NOINPUT, "%s", argv[0]); + } + + signal(SIGINT, handler); + signal(SIGTERM, handler); + + int error = listen(server, 0); + if (error) err(EX_OSERR, "listen"); + + struct pollfd fds[] = { + { .events = POLLIN, .fd = server }, + { .events = POLLIN, .fd = pty }, + }; + while (0 < poll(fds, (sink ? 2 : 1), -1)) { + if (fds[0].revents) { + int client = accept(server, NULL, NULL); + if (client < 0) err(EX_IOERR, "accept"); + + ssize_t len = sendfd(client, pty); + if (len < 0) warn("sendfd"); + + len = recv(client, &_, sizeof(_), 0); + if (len < 0) warn("recv"); + + close(client); + } + + if (fds[1].revents) { + char buf[4096]; + ssize_t len = read(pty, buf, sizeof(buf)); + if (len < 0) err(EX_IOERR, "read"); + } + + int status; + pid_t dead = waitpid(pid, &status, WNOHANG); + if (dead < 0) err(EX_OSERR, "waitpid"); + if (dead) { + unlink(addr.sun_path); + exit(WIFEXITED(status) ? WEXITSTATUS(status) : -WTERMSIG(status)); + } + } + err(EX_IOERR, "poll"); +} + +static struct termios saveTerm; +static void restoreTerm(void) { + tcsetattr(STDIN_FILENO, TCSADRAIN, &saveTerm); + fprintf(stderr, "\33c"); // RIS + warnx("detached"); +} + +static void nop(int sig) { + (void)sig; +} + +static void attach(int client) { + int error; + + int pty = recvfd(client); + if (pty < 0) err(EX_IOERR, "recvfd"); + warnx("attached"); + + struct winsize window; + error = ioctl(STDIN_FILENO, TIOCGWINSZ, &window); + if (error) err(EX_IOERR, "ioctl"); + + struct winsize redraw = { .ws_row = 1, .ws_col = 1 }; + error = ioctl(pty, TIOCSWINSZ, &redraw); + if (error) err(EX_IOERR, "ioctl"); + + error = ioctl(pty, TIOCSWINSZ, &window); + if (error) err(EX_IOERR, "ioctl"); + + error = tcgetattr(STDIN_FILENO, &saveTerm); + if (error) err(EX_IOERR, "tcgetattr"); + atexit(restoreTerm); + + struct termios raw = saveTerm; + cfmakeraw(&raw); + error = tcsetattr(STDIN_FILENO, TCSADRAIN, &raw); + if (error) err(EX_IOERR, "tcsetattr"); + + signal(SIGWINCH, nop); + + char buf[4096]; + struct pollfd fds[] = { + { .events = POLLIN, .fd = STDIN_FILENO }, + { .events = POLLIN, .fd = pty }, + }; + for (;;) { + int nfds = poll(fds, 2, -1); + if (nfds < 0) { + if (errno != EINTR) err(EX_IOERR, "poll"); + + error = ioctl(STDIN_FILENO, TIOCGWINSZ, &window); + if (error) err(EX_IOERR, "ioctl"); + + error = ioctl(pty, TIOCSWINSZ, &window); + if (error) err(EX_IOERR, "ioctl"); + + continue; + } + + if (fds[0].revents) { + ssize_t len = read(STDIN_FILENO, buf, sizeof(buf)); + if (len < 0) err(EX_IOERR, "read"); + if (!len) break; + + if (len == 1 && buf[0] == CTRL('Q')) break; + + len = write(pty, buf, len); + if (len < 0) err(EX_IOERR, "write"); + } + + if (fds[1].revents) { + ssize_t len = read(pty, buf, sizeof(buf)); + if (len < 0) err(EX_IOERR, "read"); + if (!len) break; + + len = write(STDOUT_FILENO, buf, len); + if (len < 0) err(EX_IOERR, "write"); + } + } +} + +int main(int argc, char *argv[]) { + int error; + + bool atch = false; + bool sink = false; + + int opt; + while (0 < (opt = getopt(argc, argv, "as"))) { + switch (opt) { + break; case 'a': atch = true; + break; case 's': sink = true; + break; default: return EX_USAGE; + } + } + if (optind == argc) errx(EX_USAGE, "no session name"); + const char *name = argv[optind++]; + + if (optind == argc) { + argv[--optind] = getenv("SHELL"); + if (!argv[optind]) errx(EX_CONFIG, "SHELL unset"); + } + + const char *home = getenv("HOME"); + if (!home) errx(EX_CONFIG, "HOME unset"); + + int fd = open(home, 0); + if (fd < 0) err(EX_CANTCREAT, "%s", home); + + error = mkdirat(fd, ".dtch", 0700); + if (error && errno != EEXIST) err(EX_CANTCREAT, "%s/.dtch", home); + + close(fd); + + int sock = socket(PF_UNIX, SOCK_STREAM, 0); + if (sock < 0) err(EX_OSERR, "socket"); + fcntl(sock, F_SETFD, FD_CLOEXEC); + + snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/.dtch/%s", home, name); + + if (atch) { + error = connect(sock, (struct sockaddr *)&addr, SUN_LEN(&addr)); + if (error) err(EX_NOINPUT, "%s", addr.sun_path); + attach(sock); + } else { + error = bind(sock, (struct sockaddr *)&addr, SUN_LEN(&addr)); + if (error) err(EX_CANTCREAT, "%s", addr.sun_path); + detach(sock, sink, &argv[optind]); + } +} diff --git a/bin/ever.c b/bin/ever.c new file mode 100644 index 00000000..258b058b --- /dev/null +++ b/bin/ever.c @@ -0,0 +1,116 @@ +/* Copyright (C) 2017 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <sys/types.h> + +#include <err.h> +#include <fcntl.h> +#include <stdbool.h> +#include <stdlib.h> +#include <sys/event.h> +#include <sys/wait.h> +#include <sysexits.h> +#include <unistd.h> + +static int watch(int kq, char *path) { + int fd = open(path, O_CLOEXEC); + if (fd < 0) err(EX_NOINPUT, "%s", path); + + struct kevent event; + EV_SET( + &event, + fd, + EVFILT_VNODE, + EV_ADD | EV_CLEAR, + NOTE_WRITE | NOTE_DELETE, + 0, + path + ); + int nevents = kevent(kq, &event, 1, NULL, 0, NULL); + if (nevents < 0) err(EX_OSERR, "kevent"); + + return fd; +} + +static void exec(int fd, char *const argv[]) { + pid_t pid = fork(); + if (pid < 0) err(EX_OSERR, "fork"); + + if (!pid) { + dup2(fd, STDIN_FILENO); + execvp(*argv, argv); + err(EX_NOINPUT, "%s", *argv); + } + + int status; + pid = wait(&status); + if (pid < 0) err(EX_OSERR, "wait"); + + if (WIFEXITED(status)) { + warnx("exit %d\n", WEXITSTATUS(status)); + } else if (WIFSIGNALED(status)) { + warnx("signal %d\n", WTERMSIG(status)); + } else { + warnx("status %d\n", status); + } +} + +int main(int argc, char *argv[]) { + bool input = false; + + for (int opt; 0 < (opt = getopt(argc, argv, "i"));) { + switch (opt) { + break; case 'i': input = true; + break; default: return EX_USAGE; + } + } + argc -= optind; + argv += optind; + if (argc < 2) return EX_USAGE; + + int kq = kqueue(); + if (kq < 0) err(EX_OSERR, "kqueue"); + + int i; + for (i = 0; i < argc - 1; ++i) { + if (argv[i][0] == '-') { + i++; + break; + } + watch(kq, argv[i]); + } + + if (!input) { + exec(STDIN_FILENO, &argv[i]); + } + + for (;;) { + struct kevent event; + int nevents = kevent(kq, NULL, 0, &event, 1, NULL); + if (nevents < 0) err(EX_OSERR, "kevent"); + + if (event.fflags & NOTE_DELETE) { + close(event.ident); + sleep(1); + event.ident = watch(kq, (char *)event.udata); + } else if (input) { + off_t off = lseek(event.ident, 0, SEEK_SET); + if (off < 0) err(EX_IOERR, "lseek"); + } + + exec((input ? event.ident : STDIN_FILENO), &argv[i]); + } +} diff --git a/bin/fbatt.c b/bin/fbatt.c new file mode 100644 index 00000000..9feffe47 --- /dev/null +++ b/bin/fbatt.c @@ -0,0 +1,123 @@ +/* Copyright (C) 2018 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <dirent.h> +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <linux/fb.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sysexits.h> +#include <unistd.h> + +#include "scheme.h" + +static const char *Class = "/sys/class/power_supply"; + +static const uint32_t Right = 5 * 8 + 1; // fbclock width. +static const uint32_t Width = 8; +static const uint32_t Height = 16; + +int main() { + int error; + + DIR *dir = opendir(Class); + if (!dir) err(EX_OSFILE, "%s", Class); + + FILE *chargeFull = NULL; + FILE *chargeNow = NULL; + + const struct dirent *entry; + while (NULL != (errno = 0, entry = readdir(dir))) { + if (entry->d_name[0] == '.') continue; + + error = chdir(Class); + if (error) err(EX_OSFILE, "%s", Class); + + error = chdir(entry->d_name); + if (error) err(EX_OSFILE, "%s/%s", Class, entry->d_name); + + chargeFull = fopen("charge_full", "r"); + chargeNow = fopen("charge_now", "r"); + if (chargeFull && chargeNow) break; + } + if (!chargeFull || !chargeNow) { + if (errno) err(EX_OSFILE, "%s", Class); + errx(EX_CONFIG, "%s: empty", Class); + } + closedir(dir); + + const char *path = getenv("FRAMEBUFFER"); + if (!path) path = "/dev/fb0"; + + int fb = open(path, O_RDWR); + if (fb < 0) err(EX_OSFILE, "%s", path); + + struct fb_var_screeninfo info; + error = ioctl(fb, FBIOGET_VSCREENINFO, &info); + if (error) err(EX_IOERR, "%s", path); + + size_t size = 4 * info.xres * info.yres; + uint32_t *buf = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fb, 0); + if (buf == MAP_FAILED) err(EX_IOERR, "%s", path); + + for (;;) { + int match; + + rewind(chargeFull); + fflush(chargeFull); + uint32_t full; + match = fscanf(chargeFull, "%u", &full); + if (match == EOF) err(EX_IOERR, "charge_full"); + if (match < 1) errx(EX_DATAERR, "charge_full"); + + rewind(chargeNow); + fflush(chargeNow); + uint32_t now; + match = fscanf(chargeNow, "%u", &now); + if (match == EOF) err(EX_IOERR, "charge_now"); + if (match < 1) errx(EX_DATAERR, "charge_now"); + + uint32_t percent = 100 * now / full; + uint32_t height = 16 * now / full; + + for (int i = 0; i < 60; ++i, sleep(1)) { + uint32_t left = info.xres - Right - Width; + + for (uint32_t y = 0; y <= Height; ++y) { + buf[y * info.xres + left - 1] = DarkWhite; + buf[y * info.xres + left + Width] = DarkWhite; + } + for (uint32_t x = left; x < left + Width; ++x) { + buf[Height * info.xres + x] = DarkWhite; + } + + for (uint32_t y = 0; y < Height; ++y) { + for (uint32_t x = left; x < left + Width; ++x) { + buf[y * info.xres + x] = + (Height - 1 - y > height) ? DarkBlack + : (percent <= 10) ? DarkRed + : (percent <= 30) ? DarkYellow + : LightBlack; + } + } + } + } +} diff --git a/bin/fbclock.c b/bin/fbclock.c new file mode 100644 index 00000000..ddc32db6 --- /dev/null +++ b/bin/fbclock.c @@ -0,0 +1,132 @@ +/* Copyright (C) 2018 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <assert.h> +#include <err.h> +#include <fcntl.h> +#include <linux/fb.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sysexits.h> +#include <time.h> +#include <unistd.h> +#include <zlib.h> + +#include "scheme.h" + +static const uint32_t PSF2Magic = 0x864AB572; +struct PSF2Header { + uint32_t magic; + uint32_t version; + uint32_t headerSize; + uint32_t flags; + uint32_t glyphCount; + uint32_t glyphSize; + uint32_t glyphHeight; + uint32_t glyphWidth; +}; + +int main() { + size_t len; + + const char *fontPath = getenv("FONT"); + if (!fontPath) { + fontPath = "/usr/share/kbd/consolefonts/Lat2-Terminus16.psfu.gz"; + } + + gzFile font = gzopen(fontPath, "r"); + if (!font) err(EX_NOINPUT, "%s", fontPath); + + struct PSF2Header header; + len = gzfread(&header, sizeof(header), 1, font); + if (!len && gzeof(font)) errx(EX_DATAERR, "%s: missing header", fontPath); + if (!len) errx(EX_IOERR, "%s", gzerror(font, NULL)); + + if (header.magic != PSF2Magic) { + errx( + EX_DATAERR, "%s: invalid header magic %08X", + fontPath, header.magic + ); + } + if (header.headerSize != sizeof(struct PSF2Header)) { + errx( + EX_DATAERR, "%s: weird header size %d", + fontPath, header.headerSize + ); + } + + uint8_t glyphs[128][header.glyphSize]; + len = gzfread(glyphs, header.glyphSize, 128, font); + if (!len && gzeof(font)) errx(EX_DATAERR, "%s: missing glyphs", fontPath); + if (!len) errx(EX_IOERR, "%s", gzerror(font, NULL)); + + gzclose(font); + + const char *fbPath = getenv("FRAMEBUFFER"); + if (!fbPath) fbPath = "/dev/fb0"; + + int fb = open(fbPath, O_RDWR); + if (fb < 0) err(EX_OSFILE, "%s", fbPath); + + struct fb_var_screeninfo info; + int error = ioctl(fb, FBIOGET_VSCREENINFO, &info); + if (error) err(EX_IOERR, "%s", fbPath); + + size_t size = 4 * info.xres * info.yres; + uint32_t *buf = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fb, 0); + if (buf == MAP_FAILED) err(EX_IOERR, "%s", fbPath); + + for (;;) { + time_t t = time(NULL); + if (t < 0) err(EX_OSERR, "time"); + const struct tm *local = localtime(&t); + if (!local) err(EX_OSERR, "localtime"); + + char str[64]; + len = strftime(str, sizeof(str), "%H:%M", local); + assert(len); + + for (int i = 0; i < (60 - local->tm_sec); ++i, sleep(1)) { + uint32_t left = info.xres - header.glyphWidth * len; + uint32_t bottom = header.glyphHeight; + + for (uint32_t y = 0; y < bottom; ++y) { + buf[y * info.xres + left - 1] = DarkWhite; + } + for (uint32_t x = left - 1; x < info.xres; ++x) { + buf[bottom * info.xres + x] = DarkWhite; + } + + for (const char *s = str; *s; ++s) { + const uint8_t *glyph = glyphs[(unsigned)*s]; + uint32_t stride = header.glyphSize / header.glyphHeight; + for (uint32_t y = 0; y < header.glyphHeight; ++y) { + for (uint32_t x = 0; x < header.glyphWidth; ++x) { + uint8_t bits = glyph[y * stride + x / 8]; + uint8_t bit = bits >> (7 - x % 8) & 1; + buf[y * info.xres + left + x] = bit + ? DarkWhite + : DarkBlack; + } + } + left += header.glyphWidth; + } + } + } +} diff --git a/bin/glitch.c b/bin/glitch.c new file mode 100644 index 00000000..9747f35a --- /dev/null +++ b/bin/glitch.c @@ -0,0 +1,538 @@ +/* Copyright (C) 2018 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <arpa/inet.h> +#include <err.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <unistd.h> +#include <zlib.h> + +#define PACKED __attribute__((packed)) + +#define CRC_INIT (crc32(0, Z_NULL, 0)) + +static const char *path; +static FILE *file; +static uint32_t crc; + +static void readExpect(void *ptr, size_t size, const char *expect) { + fread(ptr, size, 1, file); + if (ferror(file)) err(EX_IOERR, "%s", path); + if (feof(file)) errx(EX_DATAERR, "%s: missing %s", path, expect); + crc = crc32(crc, ptr, size); +} + +static void writeExpect(const void *ptr, size_t size) { + fwrite(ptr, size, 1, file); + if (ferror(file)) err(EX_IOERR, "%s", path); + crc = crc32(crc, ptr, size); +} + +static const uint8_t Signature[8] = "\x89PNG\r\n\x1A\n"; + +static void readSignature(void) { + uint8_t signature[8]; + readExpect(signature, 8, "signature"); + if (0 != memcmp(signature, Signature, 8)) { + errx(EX_DATAERR, "%s: invalid signature", path); + } +} + +static void writeSignature(void) { + writeExpect(Signature, sizeof(Signature)); +} + +struct PACKED Chunk { + uint32_t size; + char type[4]; +}; + +static const char *typeStr(struct Chunk chunk) { + static char buf[5]; + memcpy(buf, chunk.type, 4); + return buf; +} + +static struct Chunk readChunk(void) { + struct Chunk chunk; + readExpect(&chunk, sizeof(chunk), "chunk"); + chunk.size = ntohl(chunk.size); + crc = crc32(CRC_INIT, (Byte *)chunk.type, sizeof(chunk.type)); + return chunk; +} + +static void writeChunk(struct Chunk chunk) { + chunk.size = htonl(chunk.size); + writeExpect(&chunk, sizeof(chunk)); + crc = crc32(CRC_INIT, (Byte *)chunk.type, sizeof(chunk.type)); +} + +static void readCrc(void) { + uint32_t expected = crc; + uint32_t found; + readExpect(&found, sizeof(found), "CRC32"); + found = ntohl(found); + if (found != expected) { + errx( + EX_DATAERR, "%s: expected CRC32 %08X, found %08X", + path, expected, found + ); + } +} + +static void writeCrc(void) { + uint32_t net = htonl(crc); + writeExpect(&net, sizeof(net)); +} + +static void skipChunk(struct Chunk chunk) { + uint8_t discard[chunk.size]; + readExpect(discard, sizeof(discard), "chunk data"); + readCrc(); +} + +static struct PACKED { + uint32_t width; + uint32_t height; + uint8_t depth; + enum PACKED { + Grayscale = 0, + Truecolor = 2, + Indexed = 3, + GrayscaleAlpha = 4, + TruecolorAlpha = 6, + } color; + uint8_t compression; + uint8_t filter; + uint8_t interlace; +} header; +_Static_assert(13 == sizeof(header), "header size"); + +static size_t pixelBits(void) { + switch (header.color) { + case Grayscale: return 1 * header.depth; + case Truecolor: return 3 * header.depth; + case Indexed: return 1 * header.depth; + case GrayscaleAlpha: return 2 * header.depth; + case TruecolorAlpha: return 4 * header.depth; + default: abort(); + } +} + +static size_t pixelSize(void) { + return (pixelBits() + 7) / 8; +} + +static size_t lineSize(void) { + return (header.width * pixelBits() + 7) / 8; +} + +static size_t dataSize(void) { + return (1 + lineSize()) * header.height; +} + +static void readHeader(void) { + struct Chunk ihdr = readChunk(); + if (0 != memcmp(ihdr.type, "IHDR", 4)) { + errx(EX_DATAERR, "%s: expected IHDR, found %s", path, typeStr(ihdr)); + } + if (ihdr.size != sizeof(header)) { + errx( + EX_DATAERR, "%s: expected IHDR size %zu, found %u", + path, sizeof(header), ihdr.size + ); + } + readExpect(&header, sizeof(header), "header"); + readCrc(); + header.width = ntohl(header.width); + header.height = ntohl(header.height); + if (!header.width) errx(EX_DATAERR, "%s: invalid width 0", path); + if (!header.height) errx(EX_DATAERR, "%s: invalid height 0", path); +} + +static void writeHeader(void) { + struct Chunk ihdr = { .size = sizeof(header), .type = "IHDR" }; + writeChunk(ihdr); + header.width = htonl(header.width); + header.height = htonl(header.height); + writeExpect(&header, sizeof(header)); + writeCrc(); + header.width = ntohl(header.width); + header.height = ntohl(header.height); +} + +static struct { + uint32_t len; + uint8_t entries[256][3]; +} palette; + +static void readPalette(void) { + struct Chunk chunk; + for (;;) { + chunk = readChunk(); + if (0 == memcmp(chunk.type, "PLTE", 4)) break; + skipChunk(chunk); + } + palette.len = chunk.size / 3; + readExpect(palette.entries, chunk.size, "palette data"); + readCrc(); +} + +static void writePalette(void) { + struct Chunk plte = { .size = 3 * palette.len, .type = "PLTE" }; + writeChunk(plte); + writeExpect(palette.entries, plte.size); + writeCrc(); +} + +static uint8_t *data; + +static void readData(void) { + data = malloc(dataSize()); + if (!data) err(EX_OSERR, "malloc(%zu)", dataSize()); + + struct z_stream_s stream = { .next_out = data, .avail_out = dataSize() }; + int error = inflateInit(&stream); + if (error != Z_OK) errx(EX_SOFTWARE, "%s: inflateInit: %s", path, stream.msg); + + for (;;) { + struct Chunk chunk = readChunk(); + if (0 == memcmp(chunk.type, "IDAT", 4)) { + uint8_t *idat = malloc(chunk.size); + if (!idat) err(EX_OSERR, "malloc"); + + readExpect(idat, chunk.size, "image data"); + readCrc(); + + stream.next_in = idat; + stream.avail_in = chunk.size; + int error = inflate(&stream, Z_SYNC_FLUSH); + free(idat); + + if (error == Z_STREAM_END) break; + if (error != Z_OK) errx(EX_DATAERR, "%s: inflate: %s", path, stream.msg); + + } else if (0 == memcmp(chunk.type, "IEND", 4)) { + errx(EX_DATAERR, "%s: missing IDAT chunk", path); + } else { + skipChunk(chunk); + } + } + + inflateEnd(&stream); + if ((size_t)stream.total_out != dataSize()) { + errx( + EX_DATAERR, "%s: expected data size %zu, found %zu", + path, dataSize(), (size_t)stream.total_out + ); + } +} + +static void writeData(void) { + uLong size = compressBound(dataSize()); + uint8_t *deflate = malloc(size); + if (!deflate) err(EX_OSERR, "malloc"); + + int error = compress2(deflate, &size, data, dataSize(), Z_BEST_SPEED); + if (error != Z_OK) errx(EX_SOFTWARE, "%s: compress2: %d", path, error); + + struct Chunk idat = { .size = size, .type = "IDAT" }; + writeChunk(idat); + writeExpect(deflate, size); + writeCrc(); + + free(deflate); +} + +static void writeEnd(void) { + struct Chunk iend = { .size = 0, .type = "IEND" }; + writeChunk(iend); + writeCrc(); +} + +enum PACKED Filter { + None, + Sub, + Up, + Average, + Paeth, + FilterCount, +}; + +static struct { + bool brokenPaeth; + bool filt; + bool recon; + uint8_t declareFilter; + uint8_t applyFilter; + enum Filter declareFilters[255]; + enum Filter applyFilters[255]; + bool invert; + bool mirror; + bool zeroX; + bool zeroY; +} options; + +struct Bytes { + uint8_t x; + uint8_t a; + uint8_t b; + uint8_t c; +}; + +static uint8_t paethPredictor(struct Bytes f) { + int32_t p = (int32_t)f.a + (int32_t)f.b - (int32_t)f.c; + int32_t pa = abs(p - (int32_t)f.a); + int32_t pb = abs(p - (int32_t)f.b); + int32_t pc = abs(p - (int32_t)f.c); + if (pa <= pb && pa <= pc) return f.a; + if (options.brokenPaeth) { + if (pb < pc) return f.b; + } else { + if (pb <= pc) return f.b; + } + return f.c; +} + +static uint8_t recon(enum Filter type, struct Bytes f) { + switch (type) { + case None: return f.x; + case Sub: return f.x + f.a; + case Up: return f.x + f.b; + case Average: return f.x + ((uint32_t)f.a + (uint32_t)f.b) / 2; + case Paeth: return f.x + paethPredictor(f); + default: abort(); + } +} + +static uint8_t filt(enum Filter type, struct Bytes f) { + switch (type) { + case None: return f.x; + case Sub: return f.x - f.a; + case Up: return f.x - f.b; + case Average: return f.x - ((uint32_t)f.a + (uint32_t)f.b) / 2; + case Paeth: return f.x - paethPredictor(f); + default: abort(); + } +} + +static struct Line { + enum Filter type; + uint8_t data[]; +} **lines; + +static void scanlines(void) { + lines = calloc(header.height, sizeof(*lines)); + if (!lines) err(EX_OSERR, "calloc(%u, %zu)", header.height, sizeof(*lines)); + + size_t stride = 1 + lineSize(); + for (uint32_t y = 0; y < header.height; ++y) { + lines[y] = (struct Line *)&data[y * stride]; + if (lines[y]->type >= FilterCount) { + errx(EX_DATAERR, "%s: invalid filter type %hhu", path, lines[y]->type); + } + } +} + +static struct Bytes origBytes(uint32_t y, size_t i) { + bool a = (i >= pixelSize()), b = (y > 0), c = (a && b); + return (struct Bytes) { + .x = lines[y]->data[i], + .a = a ? lines[y]->data[i - pixelSize()] : 0, + .b = b ? lines[y - 1]->data[i] : 0, + .c = c ? lines[y - 1]->data[i - pixelSize()] : 0, + }; +} + +static void reconData(void) { + for (uint32_t y = 0; y < header.height; ++y) { + for (size_t i = 0; i < lineSize(); ++i) { + if (options.filt) { + lines[y]->data[i] = filt(lines[y]->type, origBytes(y, i)); + } else { + lines[y]->data[i] = recon(lines[y]->type, origBytes(y, i)); + } + } + lines[y]->type = None; + } +} + +static void filterData(void) { + for (uint32_t y = header.height - 1; y < header.height; --y) { + uint8_t filter[FilterCount][lineSize()]; + uint32_t heuristic[FilterCount] = {0}; + enum Filter minType = None; + for (enum Filter type = None; type < FilterCount; ++type) { + for (size_t i = 0; i < lineSize(); ++i) { + if (options.recon) { + filter[type][i] = recon(type, origBytes(y, i)); + } else { + filter[type][i] = filt(type, origBytes(y, i)); + } + heuristic[type] += abs((int8_t)filter[type][i]); + } + if (heuristic[type] < heuristic[minType]) minType = type; + } + + if (options.declareFilter) { + lines[y]->type = options.declareFilters[y % options.declareFilter]; + } else { + lines[y]->type = minType; + } + + if (options.applyFilter) { + enum Filter type = options.applyFilters[y % options.applyFilter]; + memcpy(lines[y]->data, filter[type], lineSize()); + } else { + memcpy(lines[y]->data, filter[minType], lineSize()); + } + } +} + +static void invert(void) { + for (uint32_t y = 0; y < header.height; ++y) { + for (size_t i = 0; i < lineSize(); ++i) { + lines[y]->data[i] ^= 0xFF; + } + } +} + +static void mirror(void) { + for (uint32_t y = 0; y < header.height; ++y) { + for (size_t i = 0, j = lineSize() - 1; i < j; ++i, --j) { + uint8_t t = lines[y]->data[i]; + lines[y]->data[i] = lines[y]->data[j]; + lines[y]->data[j] = t; + } + } +} + +static void zeroX(void) { + for (uint32_t y = 0; y < header.height; ++y) { + memset(lines[y]->data, 0, pixelSize()); + } +} + +static void zeroY(void) { + memset(lines[0]->data, 0, lineSize()); +} + +static void glitch(const char *inPath, const char *outPath) { + if (inPath) { + path = inPath; + file = fopen(path, "r"); + if (!file) err(EX_NOINPUT, "%s", path); + } else { + path = "(stdin)"; + file = stdin; + } + + readSignature(); + readHeader(); + if (header.color == Indexed) readPalette(); + readData(); + fclose(file); + + scanlines(); + reconData(); + filterData(); + if (options.invert) invert(); + if (options.mirror) mirror(); + if (options.zeroX) zeroX(); + if (options.zeroY) zeroY(); + free(lines); + + if (outPath) { + path = outPath; + file = fopen(path, "w"); + if (!file) err(EX_CANTCREAT, "%s", path); + } else { + path = "(stdout)"; + file = stdout; + } + + writeSignature(); + writeHeader(); + if (header.color == Indexed) writePalette(); + writeData(); + writeEnd(); + free(data); + + int error = fclose(file); + if (error) err(EX_IOERR, "%s", path); +} + +static enum Filter parseFilter(const char *s) { + switch (s[0]) { + case 'N': case 'n': return None; + case 'S': case 's': return Sub; + case 'U': case 'u': return Up; + case 'A': case 'a': return Average; + case 'P': case 'p': return Paeth; + default: errx(EX_USAGE, "invalid filter type %s", s); + } +} + +static uint8_t parseFilters(enum Filter *filters, const char *s) { + uint8_t len = 0; + do { + filters[len++] = parseFilter(s); + s = strchr(s, ','); + } while (s++); + return len; +} + +int main(int argc, char *argv[]) { + bool stdio = false; + char *output = NULL; + + int opt; + while (0 < (opt = getopt(argc, argv, "a:cd:fimo:prxy"))) { + switch (opt) { + break; case 'a': + options.applyFilter = parseFilters(options.applyFilters, optarg); + break; case 'c': stdio = true; + break; case 'd': + options.declareFilter = parseFilters(options.declareFilters, optarg); + break; case 'f': options.filt = true; + break; case 'i': options.invert = true; + break; case 'm': options.mirror = true; + break; case 'o': output = optarg; + break; case 'p': options.brokenPaeth = true; + break; case 'r': options.recon = true; + break; case 'x': options.zeroX = true; + break; case 'y': options.zeroY = true; + break; default: return EX_USAGE; + } + } + + if (argc - optind == 1 && (output || stdio)) { + glitch(argv[optind], output); + } else if (optind < argc) { + for (int i = optind; i < argc; ++i) { + glitch(argv[i], argv[i]); + } + } else { + glitch(NULL, output); + } + + return EX_OK; +} diff --git a/bin/hi.c b/bin/hi.c new file mode 100644 index 00000000..b39c0af4 --- /dev/null +++ b/bin/hi.c @@ -0,0 +1,766 @@ +/* vim: set foldmethod=marker foldlevel=0: */ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <assert.h> +#include <err.h> +#include <locale.h> +#include <regex.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/stat.h> +#include <sysexits.h> +#include <unistd.h> + +#define ARRAY_LEN(a) (sizeof(a) / sizeof(a[0])) + +typedef unsigned Set; +#define SET(x) ((Set)1 << (x)) + +#define ENUM_CLASS \ + X(Normal) \ + X(Keyword) \ + X(Macro) \ + X(Tag) \ + X(String) \ + X(Escape) \ + X(Format) \ + X(Interp) \ + X(Comment) \ + X(Todo) \ + X(DiffOld) \ + X(DiffNew) + +enum Class { +#define X(class) class, + ENUM_CLASS +#undef X + ClassLen, +}; + +static const char *ClassName[ClassLen] = { +#define X(class) [class] = #class, + ENUM_CLASS +#undef X +}; + +struct Syntax { + enum Class class; + Set parent; + bool newline; + size_t subexp; + const char *pattern; +}; + +#define WB "(^|[^_[:alnum:]]|\n)" +#define BL0 "[[:blank:]]*" +#define BL1 "[[:blank:]]+" +#define SP0 "[[:space:]]*" +#define SP1 "[[:space:]]+" +#define PATTERN_ID "[_[:alpha:]][_[:alnum:]]*" +#define PATTERN_SQ "'([^']|[\\]')*'" +#define PATTERN_DQ "\"([^\"]|[\\]\")*\"" +#define PATTERN_BC "/[*]" "([^*]|[*][^/])*" "[*]+/" +#define PATTERN_TODO "FIXME|TODO|XXX" + +// C syntax {{{ +static const struct Syntax CSyntax[] = { + { Keyword, .subexp = 2, .pattern = WB + "(" "auto|extern|register|static|(_T|t)hread_local|typedef" + "|" "_Atomic|const|restrict|volatile" + "|" "inline|(_N|n)oreturn" + "|" "(_A|a)lignas" + "|" "enum|struct|union" + "|" "do|else|for|if|switch|while" + "|" "break|case|continue|default|goto|return" + ")" WB }, + { Macro, + .pattern = "^" BL0 "#(.|[\\]\n)*" }, + { Tag, .parent = SET(Macro), .subexp = 1, + .pattern = "define" BL1 "(" PATTERN_ID ")" "[(]" }, + { Tag, .subexp = 2, + .pattern = "(enum|struct|union)" SP1 "(" PATTERN_ID ")" SP0 "[{]" }, + { Tag, .parent = ~SET(Keyword), .newline = true, .subexp = 1, + .pattern = "(" PATTERN_ID ")" SP0 "[(][^()]*[)]" SP0 "[{]" }, + { Tag, .newline = true, .subexp = 3, .pattern = + "(static|typedef)" SP1 + "(" "(" PATTERN_ID ")" SP0 + "(" "[*]" "|" "[[][^]]*[]]" "|" "[{][^}]*[}]" "|" SP0 ")*" ")+" }, + { String, .parent = SET(Macro), .subexp = 2, + .pattern = "(include|import)" BL0 "(<[^>]*>)" }, + { String, + .pattern = "[LUu]?" PATTERN_SQ }, + { String, .parent = ~SET(String), + .pattern = "([LU]|u8?)?" PATTERN_DQ }, + { Escape, .parent = SET(String), + .pattern = "[\\]([\"'?\\abfnrtv]|[0-7]{1,3}|x[0-9A-Fa-f]+)" }, + { Escape, .parent = SET(String), + .pattern = "[\\](U[0-9A-Fa-f]{8}|u[0-9A-Fa-f]{4})" }, + { Format, .parent = SET(String), .pattern = + "%%|%[ #+-0]*" // flags + "([*]|[0-9]+)?" // field width + "([.]([*]|[0-9]+))?" // precision + "([Lhjltz]|hh|ll)?" // length modifier + "[AEFGXacdefginopsux]" // format specifier + }, + { Comment, .parent = ~SET(String), + .pattern = "//(.|[\\]\n)*" }, + { Comment, .parent = ~SET(String), .newline = true, + .pattern = PATTERN_BC }, + { Todo, .parent = SET(Comment), + .pattern = PATTERN_TODO }, +}; +// }}} + +// diff syntax {{{ +static const struct Syntax DiffSyntax[] = { + { Keyword, .pattern = "^[^ ].*" }, + { Comment, .pattern = "^@@.*" }, + { DiffOld, .pattern = "^[-].*" }, + { DiffNew, .pattern = "^[+].*" }, +}; +// }}} + +// make syntax {{{ +#define MAKE_TARGET "[-./_[:alnum:]]+" +static const struct Syntax MakeSyntax[] = { + { Keyword, .subexp = 2, + .pattern = WB "([.](PHONY|PRECIOUS|SUFFIXES))" WB }, + { Macro, + .pattern = "^ *-?include" }, + { Tag, .parent = ~SET(Keyword), .subexp = 1, .pattern = + "(" MAKE_TARGET ")" "(" BL1 MAKE_TARGET ")*" BL0 ":([^=]|$)" }, + { String, .subexp = 1, + .pattern = "[._[:alnum:]]+" BL0 "[!+:?]?=" BL0 "(.*)" }, + { Normal, + .pattern = "^\t.*" }, + { String, + .pattern = PATTERN_SQ }, + { String, + .pattern = PATTERN_DQ }, + { Interp, + .pattern = "[$]." }, + // Support one level of nesting with the same delimiter. + { Interp, + .pattern = "[$][(](" "[^$)]" "|" "[$]." "|" "[$][(][^)]*[)]" ")*[)]" }, + { Interp, + .pattern = "[$][{](" "[^$}]" "|" "[$]." "|" "[$][{][^}]*[}]" ")*[}]" }, + { Escape, + .pattern = "[$][$]" }, + { Comment, .parent = ~SET(String), + .pattern = "#.*" }, + { Todo, .parent = SET(Comment), + .pattern = PATTERN_TODO }, +}; +// }}} + +// mdoc syntax {{{ +static const struct Syntax MdocSyntax[] = { + { Keyword, .subexp = 2, .pattern = WB + "(" "D[dt]|N[dm]|Os" + "|" "S[hsx]|[LP]p|Xr" + "|" "%[ABCDIJNOPQRTUV]|[BE][dl]|D[1l]|It|Ql|R[es]|Ta" + "|" "Ap|[BE]k|Ns|Pf|Sm" + "|" "Ar|Cm|Ev|Fl|O[cop]|Pa" + "|" "Dv|Er|F[acdnot]|In|Lb|V[at]" + "|" "A[dn]|Cd|Lk|M[st]" + "|" "[BE]f|Em|Li|No|Sy" + "|" "(Br|[ABDPQS])[coq]|E[co]" + "|" "At|(Bs|[BDEFNO])x|Rv|St" + ")" WB }, + { Tag, .subexp = 1, + .pattern = "^[.]S[hs]" BL1 "(.+)" }, + { String, + .pattern = PATTERN_DQ }, + { Normal, + .pattern = "^[^.].*" }, + { String, + .pattern = "[\\](" "." "|" "[(].{2}" "|" "[[][^]]*[]]" ")" }, + { Comment, + .pattern = "^[.][\\]\".*" }, + { Todo, .parent = SET(Comment), + .pattern = PATTERN_TODO }, +}; +// }}} + +// Rust syntax {{{ +static const struct Syntax RustSyntax[] = { + { Keyword, .subexp = 2, .pattern = WB + "(" "'?static|[Ss]elf|abstract|as|async|await|become|box|break|const" + "|" "continue|crate|do|dyn|else|enum|extern|false|final|fn|for|if" + "|" "impl|in|let|loop|macro|match|mod|move|mut|override|priv|pub|ref" + "|" "return|struct|super|trait|true|try|type(of)?|union|uns(afe|ized)" + "|" "use|virtual|where|while|yield" + ")" WB }, + { Tag, .subexp = 2, .pattern = + "(enum|fn|macro_rules!|mod|struct|type|union)" SP1 "(" PATTERN_ID ")" }, + { Macro, .newline = true, + .pattern = "#!?[[][^]]*[]]" }, + { Macro, + .pattern = PATTERN_ID "!" }, + { Interp, + .pattern = "[$]" PATTERN_ID }, + { String, + .pattern = "b?'([^']|[\\]')'" }, + { String, + .pattern = "b?" "\"([^\"]|[\\][\n\"])*\"" }, + { Escape, .parent = SET(String), + .pattern = "[\\]([\"'0\\nrt]|u[{][0-9A-Fa-f]{1,6}[}]|x[0-9A-Fa-f]{2})" }, + { Format, .parent = SET(String), + .pattern = "[{][{]|[{][^{}]*[}]|[}][}]" }, + { String, .parent = ~SET(String), .newline = true, + .pattern = "b?r\"[^\"]*\"" }, + { String, .parent = ~SET(String), .newline = true, + .pattern = "b?r#+\"" "([^\"]|\"[^#])*" "\"+#+" }, + { Comment, .parent = ~SET(String), + .pattern = "//.*" }, + { Comment, .parent = ~SET(String), .newline = true, + .pattern = PATTERN_BC }, + { Todo, .parent = SET(Comment), + .pattern = PATTERN_TODO }, +}; +// }}} + +// sh syntax {{{ +static const struct Syntax ShSyntax[] = { + { Keyword, .subexp = 2, .pattern = WB + "(" "!|case|do|done|elif|else|esac|fi|for|if|in|then|until|while" + "|" "alias|bg|cd|command|false|fc|fg|getopts|jobs|kill|newgrp|pwd|read" + "|" "true|type|ulimit|umask|unalias|wait" + "|" "[.:]|break|continue|eval|exec|exit|export|local|readonly|return" + "|" "set|shift|times|trap|unset" + ")" WB }, + { Tag, .subexp = 2, + .pattern = WB "(" PATTERN_ID ")" BL0 "[(]" BL0 "[)]" }, + { String, .newline = true, .subexp = 1, .pattern = + "<<-?" BL0 "EOF[^\n]*\n" + "(([^\n]|\n\t*[^E]|\n\t*E[^O]|\n\t*EO[^F]|\n\t*EOF[^\n])*)" + "\n\t*EOF\n" }, + { String, .parent = ~SET(String), .newline = true, + .pattern = PATTERN_DQ }, + { Escape, .parent = SET(String), + .pattern = "[\\][\"$\\`]" }, + { Interp, .parent = ~SET(Escape), + .pattern = "[$][(][^)]*[)]" "|" "`[^`]*`" }, + { Interp, .parent = ~SET(Escape), + .pattern = "[$][(][(]([^)]|[)][^)])*[)][)]" }, + { String, .parent = SET(Interp), + .pattern = PATTERN_DQ }, + { Interp, .parent = ~SET(Escape), + .pattern = "[$]([!#$*?@-]|[_[:alnum:]]+|[{][^}]*[}])" }, + { String, .parent = ~SET(Escape), + .pattern = "[\\]." }, + { String, .subexp = 1, .newline = true, .pattern = + "<<-?" BL0 "'EOF'[^\n]*\n" + "(([^\n]|\n\t*[^E]|\n\t*E[^O]|\n\t*EO[^F]|\n\t*EOF[^\n])*)" + "\n\t*EOF\n" }, + { String, .parent = ~SET(String), .newline = true, + .pattern = "'[^']*'" }, + { Comment, .parent = ~SET(String), .subexp = 2, + .pattern = "(^|[[:blank:]]+)(#.*)" }, + { Todo, .parent = SET(Comment), + .pattern = PATTERN_TODO }, +}; +// }}} + +static const struct Language { + const char *name; + const char *pattern; + const struct Syntax *syntax; + size_t len; +} Languages[] = { + { "c", "[.][chlmy]$", CSyntax, ARRAY_LEN(CSyntax) }, + { "diff", "[.](diff|patch)$", DiffSyntax, ARRAY_LEN(DiffSyntax) }, + { "make", "[.]mk$|^Makefile$", MakeSyntax, ARRAY_LEN(MakeSyntax) }, + { "mdoc", "[.][1-9]$", MdocSyntax, ARRAY_LEN(MdocSyntax) }, + { "rust", "[.]rs$", RustSyntax, ARRAY_LEN(RustSyntax) }, + { "sh", "[.](sh|in)$|^[.](profile|shrc)$", ShSyntax, ARRAY_LEN(ShSyntax) }, + { "text", "[.]txt$", NULL, 0 }, +}; + +static regex_t compile(const char *pattern, int flags) { + regex_t regex; + int error = regcomp(®ex, pattern, REG_EXTENDED | flags); + if (!error) return regex; + char buf[256]; + regerror(error, ®ex, buf, sizeof(buf)); + errx(EX_SOFTWARE, "regcomp: %s: %s", buf, pattern); +} + +enum { SubsLen = 8 }; +static void highlight(struct Language lang, enum Class *hi, const char *str) { + for (size_t i = 0; i < lang.len; ++i) { + struct Syntax syn = lang.syntax[i]; + regex_t regex = compile(syn.pattern, syn.newline ? 0 : REG_NEWLINE); + assert(syn.subexp < SubsLen); + assert(syn.subexp <= regex.re_nsub); + regmatch_t subs[SubsLen] = {{0}}; + for (size_t offset = 0; str[offset]; offset += subs[syn.subexp].rm_eo) { + int error = regexec( + ®ex, &str[offset], SubsLen, subs, offset ? REG_NOTBOL : 0 + ); + if (error == REG_NOMATCH) break; + if (error) errx(EX_SOFTWARE, "regexec: %d", error); + regmatch_t *sub = &subs[syn.subexp]; + if (syn.parent && !(syn.parent & SET(hi[offset + sub->rm_so]))) { + sub->rm_eo = sub->rm_so + 1; + continue; + } + for (regoff_t j = sub->rm_so; j < sub->rm_eo; ++j) { + hi[offset + j] = lang.syntax[i].class; + } + } + regfree(®ex); + } +} + +static void check(void) { + for (size_t i = 0; i < ARRAY_LEN(Languages); ++i) { + regex_t regex = compile(Languages[i].pattern, REG_NOSUB); + regfree(®ex); + for (size_t j = 0; j < Languages[i].len; ++j) { + struct Syntax syn = Languages[i].syntax[j]; + regex = compile(syn.pattern, 0); + if (syn.subexp >= SubsLen || syn.subexp > regex.re_nsub) { + errx( + EX_SOFTWARE, "subexpression %zu out of bounds: %s", + syn.subexp, syn.pattern + ); + } + regfree(®ex); + } + } +} + +#define ENUM_OPTION \ + X(Anchor, "anchor") \ + X(CSS, "css") \ + X(Document, "document") \ + X(Inline, "inline") \ + X(Monospace, "monospace") \ + X(Tab, "tab") \ + X(Title, "title") + +enum Option { +#define X(option, _) option, + ENUM_OPTION +#undef X + OptionLen, +}; + +static const char *OptionKey[OptionLen + 1] = { +#define X(option, key) [option] = key, + ENUM_OPTION +#undef X + NULL, +}; + +typedef void HeaderFn(const char *opts[]); +typedef void +OutputFn(const char *opts[], enum Class class, const char *str, size_t len); + +// ANSI format {{{ + +enum SGR { + SGRBoldOn = 1, + SGRUnderlineOn = 4, + SGRBoldOff = 22, + SGRUnderlineOff = 24, + SGRBlack = 30, + SGRRed, + SGRGreen, + SGRYellow, + SGRBlue, + SGRMagenta, + SGRCyan, + SGRWhite, + SGRDefault = 39, +}; + +static const enum SGR ANSIStyle[ClassLen][3] = { + [Normal] = { SGRDefault }, + [Keyword] = { SGRWhite }, + [Macro] = { SGRGreen }, + [Tag] = { SGRDefault, SGRUnderlineOn, SGRUnderlineOff }, + [String] = { SGRCyan }, + [Escape] = { SGRDefault }, + [Format] = { SGRCyan, SGRBoldOn, SGRBoldOff }, + [Interp] = { SGRYellow }, + [Comment] = { SGRBlue }, + [Todo] = { SGRBlue, SGRBoldOn, SGRBoldOff }, + [DiffOld] = { SGRRed }, + [DiffNew] = { SGRGreen }, +}; + +static void +ansiOutput(const char *opts[], enum Class class, const char *str, size_t len) { + (void)opts; + if (ANSIStyle[class][1]) { + printf( + "\x1B[%d;%dm%.*s\x1B[%dm", + ANSIStyle[class][0], ANSIStyle[class][1], + (int)len, str, + ANSIStyle[class][2] + ); + } else { + printf("\x1B[%dm%.*s", ANSIStyle[class][0], (int)len, str); + } +} + +// }}} + +// IRC format {{{ + +enum IRC { + IRCWhite, + IRCBlack, + IRCBlue, + IRCGreen, + IRCRed, + IRCBrown, + IRCMagenta, + IRCOrange, + IRCYellow, + IRCLightGreen, + IRCCyan, + IRCLightCyan, + IRCLightBlue, + IRCPink, + IRCGray, + IRCLightGray, + IRCBold = 0x02, + IRCColor = 0x03, + IRCMonospace = 0x11, + IRCUnderline = 0x1F, +}; + +static const enum IRC SGRIRC[] = { + [SGRBoldOn] = IRCBold, + [SGRBoldOff] = IRCBold, + [SGRUnderlineOn] = IRCUnderline, + [SGRUnderlineOff] = IRCUnderline, + [SGRBlack] = IRCBlack, + [SGRRed] = IRCRed, + [SGRGreen] = IRCGreen, + [SGRYellow] = IRCYellow, + [SGRBlue] = IRCBlue, + [SGRMagenta] = IRCMagenta, + [SGRCyan] = IRCCyan, + [SGRWhite] = IRCGray, + [SGRDefault] = 0, +}; + +static void ircHeader(const char *opts[]) { + if (opts[Monospace]) printf("%c", IRCMonospace); +} + +static void +ircOutput(const char *opts[], enum Class class, const char *str, size_t len) { + char cc[3] = ""; + if (ANSIStyle[class][0] != SGRDefault) { + snprintf(cc, sizeof(cc), "%d", SGRIRC[ANSIStyle[class][0]]); + } + // Prevent trailing formatting after newline ... + bool newline = (str[len - 1] == '\n'); + if (ANSIStyle[class][1]) { + printf( + "%c%s%c%.*s%c%s", + IRCColor, cc, SGRIRC[ANSIStyle[class][1]], + (int)(newline ? len - 1 : len), str, + SGRIRC[ANSIStyle[class][2]], + (newline ? "\n" : "") + ); + } else { + // Double-toggle bold to prevent str being interpreted as color. + printf("%c%s%c%c%.*s", IRCColor, cc, IRCBold, IRCBold, (int)len, str); + } + // ... except for monospace, at the beginning of each line. + if (newline && opts[Monospace]) printf("%c", IRCMonospace); +} + +// }}} + +// HTML format {{{ + +static void htmlEscape(const char *str, size_t len) { + while (len) { + size_t run = strcspn(str, "\"&<>"); + if (run > len) run = len; + switch (str[0]) { + break; case '"': run = 1; printf("""); + break; case '&': run = 1; printf("&"); + break; case '<': run = 1; printf("<"); + break; case '>': run = 1; printf(">"); + break; default: printf("%.*s", (int)run, str); + } + str += run; + len -= run; + } +} + +static const char *HTMLStyle[ClassLen] = { + [Keyword] = "color: dimgray;", + [Macro] = "color: green;", + [Tag] = "color: inherit; text-decoration: underline;", + [String] = "color: teal;", + [Format] = "color: teal; font-weight: bold;", + [Interp] = "color: olive;", + [Comment] = "color: navy;", + [Todo] = "color: navy; font-weight: bold;", + [DiffOld] = "color: red;", + [DiffNew] = "color: green;", +}; + +static void htmlTabSize(const char *tab) { + printf("-moz-tab-size: "); + htmlEscape(tab, strlen(tab)); + printf("; tab-size: "); + htmlEscape(tab, strlen(tab)); + printf(";"); +} + +static void htmlHeader(const char *opts[]) { + if (!opts[Document]) goto body; + printf("<!DOCTYPE html>\n<title>"); + if (opts[Title]) htmlEscape(opts[Title], strlen(opts[Title])); + printf("</title>\n"); + if (opts[CSS]) { + printf("<link rel=\"stylesheet\" href=\""); + htmlEscape(opts[CSS], strlen(opts[CSS])); + printf("\">\n"); + } else if (!opts[Inline]) { + printf("<style>\n"); + if (opts[Tab]) { + printf("pre.hi { "); + htmlTabSize(opts[Tab]); + printf(" }\n"); + } + for (enum Class class = 0; class < ClassLen; ++class) { + if (!HTMLStyle[class]) continue; + printf(".hi.%s { %s }\n", ClassName[class], HTMLStyle[class]); + } + printf( + ".hi.%s:target { color: goldenrod; outline: none; }\n", + ClassName[Tag] + ); + printf("</style>\n"); + } +body: + if (opts[Inline] && opts[Tab]) { + printf("<pre class=\"hi\" style=\""); + htmlTabSize(opts[Tab]); + printf("\">"); + } else { + printf("<pre class=\"hi\">"); + } +} + +static void htmlFooter(const char *opts[]) { + (void)opts; + printf("</pre>\n"); +} + +static void htmlAnchor(const char *opts[], const char *str, size_t len) { + if (opts[Inline]) { + printf("<a style=\"%s\" id=\"", HTMLStyle[Tag] ? HTMLStyle[Tag] : ""); + } else { + printf("<a class=\"hi %s\" id=\"", ClassName[Tag]); + } + htmlEscape(str, len); + printf("\" href=\"#"); + htmlEscape(str, len); + printf("\">"); + htmlEscape(str, len); + printf("</a>"); +} + +static void +htmlOutput(const char *opts[], enum Class class, const char *str, size_t len) { + if (opts[Anchor] && class == Tag) { + htmlAnchor(opts, str, len); + return; + } + if (opts[Inline]) { + printf("<span style=\"%s\">", HTMLStyle[class] ? HTMLStyle[class] : ""); + } else { + printf("<span class=\"hi %s\">", ClassName[class]); + } + htmlEscape(str, len); + printf("</span>"); +} + +// }}} + +// Debug format {{{ +static void +debugOutput(const char *opts[], enum Class class, const char *str, size_t len) { + (void)opts; + printf("%s\t\"", ClassName[class]); + while (len) { + size_t run = strcspn(str, "\t\n\"\\"); + if (run > len) run = len; + switch (str[0]) { + break; case '\t': run = 1; printf("\\t"); + break; case '\n': run = 1; printf("\\n"); + break; case '"': run = 1; printf("\\\""); + break; case '\\': run = 1; printf("\\\\"); + break; default: printf("%.*s", (int)run, str); + } + str += run; + len -= run; + } + printf("\"\n"); +} +// }}} + +static const struct Format { + const char *name; + OutputFn *output; + HeaderFn *header; + HeaderFn *footer; +} Formats[] = { + { "ansi", ansiOutput, NULL, NULL }, + { "irc", ircOutput, ircHeader, NULL }, + { "html", htmlOutput, htmlHeader, htmlFooter }, + { "debug", debugOutput, NULL, NULL }, +}; + +static bool findLanguage(struct Language *lang, const char *name) { + for (size_t i = 0; i < ARRAY_LEN(Languages); ++i) { + if (strcmp(name, Languages[i].name)) continue; + *lang = Languages[i]; + return true; + } + return false; +} + +static bool matchLanguage(struct Language *lang, const char *name) { + for (size_t i = 0; i < ARRAY_LEN(Languages); ++i) { + regex_t regex = compile(Languages[i].pattern, REG_NOSUB); + int error = regexec(®ex, name, 0, NULL, 0); + regfree(®ex); + if (error == REG_NOMATCH) continue; + if (error) errx(EX_SOFTWARE, "regexec: %d", error); + *lang = Languages[i]; + return true; + } + return false; +} + +static bool findFormat(struct Format *format, const char *name) { + for (size_t i = 0; i < ARRAY_LEN(Formats); ++i) { + if (strcmp(name, Formats[i].name)) continue; + *format = Formats[i]; + return true; + } + return false; +} + +int main(int argc, char *argv[]) { + setlocale(LC_CTYPE, ""); + + bool text = false; + const char *name = NULL; + struct Language lang = {0}; + struct Format format = Formats[0]; + const char *opts[OptionLen] = {0}; + + int opt; + while (0 < (opt = getopt(argc, argv, "cf:l:n:o:t"))) { + switch (opt) { + break; case 'c': check(); return EX_OK; + break; case 'f': { + if (!findFormat(&format, optarg)) { + errx(EX_USAGE, "no such format %s", optarg); + } + } + break; case 'l': { + if (!findLanguage(&lang, optarg)) { + errx(EX_USAGE, "no such language %s", optarg); + } + } + break; case 'n': name = optarg; + break; case 'o': { + char *val; + enum Option key; + while (optarg[0]) { + key = getsubopt(&optarg, (char *const *)OptionKey, &val); + if (key >= OptionLen) { + errx(EX_USAGE, "no such option %s", val); + } + opts[key] = (val ? val : ""); + } + } + break; case 't': text = true; + break; default: return EX_USAGE; + } + } + + const char *path = "(stdin)"; + FILE *file = stdin; + if (optind < argc) { + path = argv[optind]; + file = fopen(path, "r"); + if (!file) err(EX_NOINPUT, "%s", path); + } + + if (!name) { + name = strrchr(path, '/'); + name = (name ? &name[1] : path); + } + if (!lang.name && !matchLanguage(&lang, name) && !text) { + errx(EX_USAGE, "cannot infer language for %s", name); + } + if (!opts[Title]) opts[Title] = name; + + struct stat stat; + int error = fstat(fileno(file), &stat); + if (error) err(EX_IOERR, "fstat"); + + size_t cap = (stat.st_mode & S_IFREG ? stat.st_size + 1 : 4096); + char *str = malloc(cap); + if (!str) err(EX_OSERR, "malloc"); + + size_t len = 0, read; + while (0 < (read = fread(&str[len], 1, cap - len - 1, file))) { + len += read; + if (len + 1 < cap) continue; + cap *= 2; + str = realloc(str, cap); + if (!str) err(EX_OSERR, "realloc"); + } + if (ferror(file)) err(EX_IOERR, "fread"); + if (memchr(str, 0, len)) errx(EX_DATAERR, "input is binary"); + str[len] = '\0'; + + enum Class *hi = calloc(len, sizeof(*hi)); + if (!hi) err(EX_OSERR, "calloc"); + + highlight(lang, hi, str); + + size_t run = 0; + if (format.header) format.header(opts); + for (size_t i = 0; i < len; i += run) { + for (run = 1; i + run < len; ++run) { + if (hi[i + run] != hi[i]) break; + if (str[i + run - 1] == '\n') break; + } + format.output(opts, hi[i], &str[i], run); + } + if (format.footer) format.footer(opts); +} diff --git a/bin/hnel.c b/bin/hnel.c new file mode 100644 index 00000000..4a869c2d --- /dev/null +++ b/bin/hnel.c @@ -0,0 +1,120 @@ +/* Copyright (C) 2017 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <poll.h> +#include <stdbool.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> +#include <sys/wait.h> +#include <sysexits.h> +#include <termios.h> +#include <unistd.h> + +#if defined __FreeBSD__ +#include <libutil.h> +#elif defined __linux__ +#include <pty.h> +#else +#include <util.h> +#endif + +typedef unsigned char byte; + +static struct termios saveTerm; +static void restoreTerm(void) { + tcsetattr(STDIN_FILENO, TCSADRAIN, &saveTerm); +} + +int main(int argc, char *argv[]) { + int error; + + if (argc < 4) return EX_USAGE; + + byte table[256] = {0}; + if (strlen(argv[1]) != strlen(argv[2])) return EX_USAGE; + for (const char *from = argv[1], *to = argv[2]; *from; ++from, ++to) { + table[(byte)*from] = *to; + } + + error = tcgetattr(STDERR_FILENO, &saveTerm); + if (error) err(EX_IOERR, "tcgetattr"); + atexit(restoreTerm); + + struct termios raw = saveTerm; + cfmakeraw(&raw); + error = tcsetattr(STDERR_FILENO, TCSADRAIN, &raw); + if (error) err(EX_IOERR, "tcsetattr"); + + struct winsize window; + error = ioctl(STDERR_FILENO, TIOCGWINSZ, &window); + if (error) err(EX_IOERR, "TIOCGWINSZ"); + + int pty; + pid_t pid = forkpty(&pty, NULL, NULL, &window); + if (pid < 0) err(EX_OSERR, "forkpty"); + + if (!pid) { + execvp(argv[3], &argv[3]); + err(EX_NOINPUT, "%s", argv[3]); + } + + bool enable = true; + + byte buf[4096]; + struct pollfd fds[2] = { + { .fd = STDIN_FILENO, .events = POLLIN }, + { .fd = pty, .events = POLLIN }, + }; + while (0 < poll(fds, 2, -1)) { + if (fds[0].revents & POLLIN) { + ssize_t readSize = read(STDIN_FILENO, buf, sizeof(buf)); + if (readSize < 0) err(EX_IOERR, "read(%d)", STDIN_FILENO); + + if (readSize == 1) { + if (buf[0] == CTRL('S')) { + enable ^= true; + continue; + } + + byte c = buf[0]; + if (enable && table[c]) buf[0] = table[c]; + } + + ssize_t writeSize = write(pty, buf, readSize); + if (writeSize < 0) err(EX_IOERR, "write(%d)", pty); + if (writeSize < readSize) errx(EX_IOERR, "short write(%d)", pty); + } + + if (fds[1].revents & POLLIN) { + ssize_t readSize = read(pty, buf, sizeof(buf)); + if (readSize < 0) err(EX_IOERR, "read(%d)", pty); + + ssize_t writeSize = write(STDOUT_FILENO, buf, readSize); + if (writeSize < 0) err(EX_IOERR, "write(%d)", STDOUT_FILENO); + if (writeSize < readSize) { + errx(EX_IOERR, "short write(%d)", STDOUT_FILENO); + } + } + + int status; + pid_t dead = waitpid(pid, &status, WNOHANG); + if (dead < 0) err(EX_OSERR, "waitpid(%d)", pid); + if (dead) return WIFEXITED(status) ? WEXITSTATUS(status) : EX_SOFTWARE; + } + err(EX_IOERR, "poll"); +} diff --git a/bin/html.sh b/bin/html.sh new file mode 100644 index 00000000..e96a7210 --- /dev/null +++ b/bin/html.sh @@ -0,0 +1,41 @@ +#!/bin/sh +set -eu + +readonly GitURL='https://git.causal.agency/src/tree/bin' + +src=$1 +man=${2:-} + +cat <<EOF +<!DOCTYPE html> +<title>${src}</title> +<style> +$(./scheme -st) +html { + font-family: monospace; + color: var(--ansi17); + background-color: var(--ansi16); +} +a { color: var(--ansi4); } +a:visited { color: var(--ansi5); } +pre.hi { + -moz-tab-size: 4; + tab-size: 4; +} +.hi.Keyword { color: var(--ansi7); } +.hi.Macro { color: var(--ansi2); } +.hi.Tag { color: inherit; text-decoration: underline; } +.hi.Tag:target { color: var(--ansi11); outline: none; } +.hi.String { color: var(--ansi6); } +.hi.Format { color: var(--ansi14); } +.hi.Interp { color: var(--ansi3); } +.hi.Comment { color: var(--ansi4); } +.hi.Todo { color: var(--ansi12); } +.hi.DiffOld { color: var(--ansi1); } +.hi.DiffNew { color: var(--ansi2); } +</style> +<a href="${GitURL}/${src}">${src} in git</a> +EOF + +[ -f "$man" ] && man -P cat "${PWD}/${man}" | ./ttpre +./hi -t -f html -o anchor "$src" diff --git a/bin/man1/beef.1 b/bin/man1/beef.1 new file mode 100644 index 00000000..ea52cfa0 --- /dev/null +++ b/bin/man1/beef.1 @@ -0,0 +1,91 @@ +.Dd August 28, 2019 +.Dt BEEF 1 +.Os +. +.Sh NAME +.Nm beef +.Nd Befunge-93 interpreter +. +.Sh SYNOPSIS +.Nm +.Op Ar file +. +.Sh DESCRIPTION +.Nm +is a Befunge-93 interpreter. +If no +.Ar file +is provided, +the program is read from standard input. +. +.Ss Befunge-93 Command Summary +.Bl -tag -width "0-9" -compact +.It \(dq +toggle string mode +.It 0-9 +push value +.It + +add +.It - +subtract +.It * +multiply +.It / +divide +.It % +modulo +.It ! +not +.It ` +greater than +.It > +right +.It < +left +.It ^ +up +.It v +down +.It ? +random +.It _ +horizontal (left) if +.It | +vertical (up) if +.It : +duplicate +.It \e +swap +.It $ +drop +.It . +output integer +.It , +output ASCII +.It # +bridge +.It g +get (y, x) +.It p +put (y, x) = v +.It & +input integer +.It ~ +input ASCII +.It @ +exit +.El +. +.Sh EXIT STATUS +.Nm +exits with the top value left on the stack, +or 0 if the stack is left empty. +. +.Sh STANDARDS +.Rs +.%A Chris Pressey +.%Q Cat's Eye Technologies +.%T Befunge-93 +.%D September, 1993 +.%U https://github.com/catseye/Befunge-93/blob/master/doc/Befunge-93.markdown +.Re diff --git a/bin/man1/bibsort.1 b/bin/man1/bibsort.1 new file mode 100644 index 00000000..9d036920 --- /dev/null +++ b/bin/man1/bibsort.1 @@ -0,0 +1,37 @@ +.Dd December 15, 2020 +.Dt BIBSORT 1 +.Os +. +.Sh NAME +.Nm bibsort +.Nd reformat bibliography +. +.Sh SYNOPSIS +.Nm +.Op Ar file +. +.Sh DESCRIPTION +.Nm +reformats on standard output +the +.Em STANDARDS +section of the +.Xr mdoc 7 +manual page +.Ar file +or standard input. +Bibliographic references +are sorted by author last names, +and formatted in an item list +with macro lines appearing +in the order they are formatted by +.Xr mandoc 1 . +Additionally, +.Ic \&%N +macros referencing RFC numbers +are rewritten to +.Ic \&%R +macros. +. +.Sh EXAMPLES +.Dl :%!bibsort diff --git a/bin/man1/bit.1 b/bin/man1/bit.1 new file mode 100644 index 00000000..b61bc704 --- /dev/null +++ b/bin/man1/bit.1 @@ -0,0 +1,45 @@ +.Dd June 7, 2019 +.Dt BIT 1 +.Os +. +.Sh NAME +.Nm bit +.Nd a calculator +. +.Sh SYNOPSIS +.Nm +. +.Sh DESCRIPTION +.Nm +is an integer calculator. +Its syntax resembles that of C expressions, +with the following changes: +. +.Bl -bullet +.It +Underscores are allowed in integer literals. +.It +The +.Sy 0b +prefix is used for binary literals. +.It +The +.Sy -> +operator is used for arithmetic shift. +.It +The postfix operators +.Sy K , +.Sy M , +.Sy G , +.Sy T +are used as constant multipliers. +.It +Single-letter (lower case) variables +can be assigned. +The variable +.Sy _ +stores the previous result. +.El +. +.Sh SEE ALSO +.Xr operator 7 diff --git a/bin/man1/bri.1 b/bin/man1/bri.1 new file mode 100644 index 00000000..54a02322 --- /dev/null +++ b/bin/man1/bri.1 @@ -0,0 +1,44 @@ +.Dd September 7, 2018 +.Dt BRI 1 +.Os +. +.Sh NAME +.Nm bri +.Nd backlight brightness control +. +.Sh SYNOPSIS +.Nm +.Op Ar brightness +.Nm +.Cm + +.Nm +.Cm - +. +.Sh DESCRIPTION +.Nm +controls the backlight brightness on Linux. +. +.Pp +With no argument, +the current brightness is printed. +With a numerical +.Ar brightness +argument, +the brightness is set. +. +.Pp +The +.Cm + +and +.Cm - +arguments +may be repeated any number of times +and adjust the brightness +in increments of 16. +. +.Sh FILES +.Bl -tag +.It Pa /sys/class/backlight +Files under the first subdirectory found +are used to control the backlight brightness. +.El diff --git a/bin/man1/c.1 b/bin/man1/c.1 new file mode 100644 index 00000000..3ae10945 --- /dev/null +++ b/bin/man1/c.1 @@ -0,0 +1,40 @@ +.Dd May 31, 2020 +.Dt C 1 +.Os +. +.Sh NAME +.Nm c +.Nd run C +. +.Sh SYNOPSIS +.Nm +.Op Fl e Ar expr +.Op Fl i Ar include +.Op Ar stmts ... +. +.Sh DESCRIPTION +The +.Nm +utility compiles and runs +C statements wrapped in +.Fn main +with common includes. +If no +.Ar expr +or +.Ar stmts +are provided, +statements are read from standard input. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl e Ar expr +Print the result of the C expression +.Ar expr +after executing +.Ar stmts . +.It Fl i Ar include +Add the include file +.Ar include . +.El diff --git a/bin/man1/dtch.1 b/bin/man1/dtch.1 new file mode 100644 index 00000000..e27713e1 --- /dev/null +++ b/bin/man1/dtch.1 @@ -0,0 +1,67 @@ +.Dd August 12, 2019 +.Dt DTCH 1 +.Os +. +.Sh NAME +.Nm dtch +.Nd detached sessions +. +.Sh SYNOPSIS +.Nm +.Op Fl s +.Ar name +.Op Ar command ... +.Nm +.Fl a +.Ar name +. +.Sh DESCRIPTION +.Nm +spawns a +.Ar command +in a detachable session. +If no +.Ar command +is given, +the value of +.Ev SHELL +is used. +The +.Nm +process +should be run as a background job +or with +.Xr nohup 1 . +. +.Pp +To attach to an existing session, +pass the +.Fl a +flag. +To detach from the session, +type +.Ic ^Q . +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl a +Attach to an existing session. +.It Fl s +Sink the output of +.Ar command +while detached. +.El +. +.Sh FILES +.Bl -tag -width Ds +.It Pa ~/.dtch +Directory of UNIX-domain sockets +for each session. +.El +. +.Sh EXAMPLES +.Bd -literal -offset indent +dtch foo vim & +dtch -a foo +.Ed diff --git a/bin/man1/ever.1 b/bin/man1/ever.1 new file mode 100644 index 00000000..7689c5fb --- /dev/null +++ b/bin/man1/ever.1 @@ -0,0 +1,49 @@ +.Dd June 1, 2020 +.Dt EVER 1 +.Os +. +.Sh NAME +.Nm ever +.Nd watch files +. +.Sh SYNOPSIS +.Nm +.Op Fl i +.Ar +.Ar command +.Nm +.Op Fl i +.Ar +.Fl - +.Ar command +.Op Ar argument ... +. +.Sh DESCRIPTION +.Nm +executes the +.Ar command +whenever +.Ar file +is modified. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl i +Attach the +.Ar file +which was modified +to the standard input of +.Ar command . +.El +. +.Sh EXAMPLES +.Dl ever ever.c make +.Dl ever when.y ever.c -- make when ever +.Dl ever -i ever.1 mandoc +. +.Sh CAVEATS +.Nm +does not support Linux +since it uses +.Xr kqueue 2 . diff --git a/bin/man1/fbatt.1 b/bin/man1/fbatt.1 new file mode 100644 index 00000000..2d30cba7 --- /dev/null +++ b/bin/man1/fbatt.1 @@ -0,0 +1,34 @@ +.Dd September 7, 2018 +.Dt FBATT 1 +.Os +. +.Sh NAME +.Nm fbatt +.Nd framebuffer battery indicator +. +.Sh SYNOPSIS +.Nm +. +.Sh DESCRIPTION +.Nm +displays a battery charge indicator +in the top-right corner +of the Linux framebuffer. +. +.Sh ENVIRONMENT +.Bl -tag +.It Ev FRAMEBUFFER +The framebuffer device path. +.El +. +.Sh FILES +.Bl -tag +.It Pa /dev/fb0 +The default framebuffer device path. +.It Pa /sys/class/power_supply +The first subdirectory containing +.Pa charge_full +and +.Pa charge_now +is used to read the battery charge. +.El diff --git a/bin/man1/fbclock.1 b/bin/man1/fbclock.1 new file mode 100644 index 00000000..3195eb42 --- /dev/null +++ b/bin/man1/fbclock.1 @@ -0,0 +1,36 @@ +.Dd September 7, 2018 +.Dt FBCLOCK 1 +.Os +. +.Sh NAME +.Nm fbclock +.Nd framebuffer clock +. +.Sh SYNOPSIS +.Nm +. +.Sh DESCRIPTION +.Nm +displays a clock +in the top-right corner +of the Linux framebuffer. +. +.Sh ENVIRONMENT +.Bl -tag +.It Ev FONT +Path to gzipped PSF file. +. +.It Ev FRAMEBUFFER +The framebuffer device path. +.El +. +.Sh FILES +.Bl -tag +.It Pa /dev/fb0 +The default framebuffer device path. +.It Pa /usr/share/kbd/consolefonts/Lat2-Terminus16.psfu.gz +The default font path. +.El +. +.Sh SEE ALSO +.Xr setfont 8 diff --git a/bin/man1/glitch.1 b/bin/man1/glitch.1 new file mode 100644 index 00000000..6562c4dc --- /dev/null +++ b/bin/man1/glitch.1 @@ -0,0 +1,77 @@ +.Dd September 7, 2018 +.Dt GLITCH 1 +.Os +. +.Sh NAME +.Nm glitch +.Nd PNG glitcher +. +.Sh SYNOPSIS +.Nm +.Op Fl cfimprxy +.Op Fl a Ar filters +.Op Fl d Ar filters +.Op Fl o Ar file +.Op Ar +. +.Sh DESCRIPTION +.Nm +misinterprets PNG files +according to the options given +to create natural glitch effects. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl a Ar filters +Apply a pattern of comma-separated filters. +Filters are +.Cm none , +.Cm sub , +.Cm up , +.Cm average , +.Cm paeth . +. +.It Fl c +Write to standard output. +. +.It Fl d Ar filters +Declare a pattern of comma-separated filters. +See +.Fl a +for list of filters. +. +.It Fl f +Apply filtering in place of reconstruction. +. +.It Fl i +Invert image data after filtering. +. +.It Fl m +Mirror scanlines after filtering. +. +.It Fl o Ar file +Write to +.Ar file . +. +.It Fl p +Use a broken Paeth predictor function. +. +.It Fl r +Apply reconstruction in place of filtering. +. +.It Fl x +Zero first pixel of each scanline after filtering. +. +.It Fl y +Zero first scanline after filtering. +.El +. +.Sh EXAMPLES +.Dl glitch -m -a sub -d sub +. +.Sh SEE ALSO +.Xr pngo 1 +. +.Sh BUGS +More wanted. diff --git a/bin/man1/hi.1 b/bin/man1/hi.1 new file mode 100644 index 00000000..517fbab9 --- /dev/null +++ b/bin/man1/hi.1 @@ -0,0 +1,173 @@ +.Dd December 15, 2019 +.Dt HI 1 +.Os +. +.Sh NAME +.Nm hi +.Nd syntax highlighter +. +.Sh SYNOPSIS +.Nm +.Op Fl t +.Op Fl f Ar format +.Op Fl l Ar lang +.Op Fl n Ar name +.Op Fl o Ar opts +.Op Ar file +.Nm +.Fl c +. +.Sh DESCRIPTION +.Nm +highlights the contents of a +.Ar file +or standard input +and formats it +on standard output. +. +.Pp +The arguments are as follows: +.Bl -tag -width "-f format" +.It Fl c +Compile all regular expressions and exit. +.It Fl f Ar format +Set the output format. +.It Fl l Ar lang +Set the input language. +.It Fl n Ar name +Override the name used +to infer the input language. +.It Fl o Ar opts +Set output format options. +.Ar opts +is a comma-separated list of options. +.It Fl t +Default to +.Cm text +if the input language cannot be inferred. +.El +. +.Ss Output Formats +The default output format is +.Cm ansi . +. +.Bl -tag -width Ds +.It Cm ansi +Output ANSI terminal escape codes. +. +.It Cm irc +Output IRC formatting codes. +.Pp +The options are as follows: +.Bl -tag -width "monospace" +.It Cm monospace +Use the monospace formatting code +introduced by IRCCloud. +.El +. +.It Cm html +Output HTML +.Sy <pre> +with +.Sy <span> +classes. +. +.Pp +The options are as follows: +.Bl -tag -width "title=..." +.It Cm anchor +Output tags +(top-level definition names) +as anchor links. +. +.It Cm css Ns = Ns Ar url +With +.Cm document , +output a +.Sy <link> +element for the external stylesheet +.Ar url . +If unset, +output default styles in a +.Sy <style> +element. +. +.It Cm document +Output an HTML document. +. +.It Cm inline +Output inline +.Sy style +attributes rather than classes. +. +.It Cm tab Ns = Ns Ar n +With +.Cm document +or +.Cm inline , +set the +.Sy tab-size +property to +.Ar n . +. +.It Cm title Ns = Ns Ar ... +With +.Cm document , +set the +.Sy <title> +element text. +The default title is the +.Ar file +name. +.El +.El +. +.Ss Input Languages +If no input language is set with +.Fl l , +it may be inferred from the name set by +.Fl m +or from the provided +.Ar file +name. +. +.Bl -tag -width Ds +.It Cm c +The C11 language. +. +.It Cm diff +The output of +.Xr diff 1 +with the +.Fl u +flag. +. +.It Cm make +The portable subset of +.Xr make 1 . +Variable substitution supports +one level of nesting with the same delimiter. +. +.It Cm mdoc +The +.Xr mdoc 7 +language. +. +.It Cm rust +The Rust 2018 language. +Nested raw strings and block comments +are not highlighted correctly. +. +.It Cm sh +The POSIX +.Xr sh 1 +language. +Here-documents are correctly highlighted +only with a delimiter of +.Ql EOF . +Arbitrarily nested strings and command substitutions +are not highlighted correctly. +. +.It Cm text +Plain text. +.El diff --git a/bin/man1/hnel.1 b/bin/man1/hnel.1 new file mode 100644 index 00000000..82305be8 --- /dev/null +++ b/bin/man1/hnel.1 @@ -0,0 +1,36 @@ +.Dd July 8, 2019 +.Dt HNEL 1 +.Os +. +.Sh NAME +.Nm hnel +.Nd PTY input remapper +. +.Sh SYNOPSIS +.Nm +.Ar string1 +.Ar string2 +.Ar command ... +. +.Sh DESCRIPTION +.Nm +runs the +.Ar command +in a new PTY, +remapping input characters in +.Ar string1 +to the corresponding characters in +.Ar string2 . +Type +.Ic ^S +to toggle remapping. +. +.Sh EXAMPLES +.Dl hnel '[]{}' '{}[]' vim +. +.Sh SEE ALSO +.Xr tr 1 +. +.Sh BUGS +Window size changes are not propagated +to the child PTY. diff --git a/bin/man1/modem.1 b/bin/man1/modem.1 new file mode 100644 index 00000000..a4bbc3f1 --- /dev/null +++ b/bin/man1/modem.1 @@ -0,0 +1,31 @@ +.Dd December 8, 2020 +.Dt MODEM 1 +.Os +. +.Sh NAME +.Nm modem +.Nd fixed baud rate wrapper +. +.Sh SYNOPSIS +.Nm +.Op Fl r Ar rate +.Ar command ... +. +.Sh DESCRIPTION +.Nm +runs the +.Ar command +in a new PTY +with a fixed baud rate. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl r Ar rate +Set the baud rate. +The default is 19200. +.El +. +.Sh BUGS +Window size changes are not propagated +to the child PTY. diff --git a/bin/man1/nudge.1 b/bin/man1/nudge.1 new file mode 100644 index 00000000..3ca4294a --- /dev/null +++ b/bin/man1/nudge.1 @@ -0,0 +1,44 @@ +.Dd September 4, 2020 +.Dt NUDGE 1 +.Os +. +.Sh NAME +.Nm nudge +.Nd terminal vibrator +. +.Sh SYNOPSIS +.Nm +.Op Fl f Ar file +.Op Fl n Ar count +.Op Fl s Ar shake +.Op Fl t Ar delay +. +.Sh DESCRIPTION +The +.Nm +utility +nudges the terminal. +An +.Xr xterm 1 +compatible terminal is required. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl f Ar file +Open the terminal named by +.Ar file . +The default is +.Pa /dev/tty . +.It Fl n Ar count +Set the number of times +to nudge the terminal. +The default is 2. +.It Fl s Ar shake +Set the shake intensity in pixels. +The default is 10. +.It Fl t Ar delay +Set the interval between shakes +in milliseconds. +The default is 20. +.El diff --git a/bin/man1/order.1 b/bin/man1/order.1 new file mode 100644 index 00000000..8e0f9661 --- /dev/null +++ b/bin/man1/order.1 @@ -0,0 +1,38 @@ +.Dd July 18, 2020 +.Dt ORDER 1 +.Os +. +.Sh NAME +.Nm order +.Nd operator precedence +. +.Sh SYNOPSIS +.Nm +.Op Ar expr ... +. +.Sh DESCRIPTION +.Nm +parses C expressions +and prints them with parentheses +according to the precedence rules in +.Xr operator 7 . +If no +.Ar expr +are given, +each line of standard input +is parsed and printed. +. +.Sh EXAMPLES +.Bd -literal +$ order 'a & b << 1' +(a & (b << 1)) +.Ed +. +.Sh SEE ALSO +.Xr operator 7 +. +.Sh CAVEATS +.Nm +does not support the +.Sy (type) +operator. diff --git a/bin/man1/pbd.1 b/bin/man1/pbd.1 new file mode 100644 index 00000000..bbc7b785 --- /dev/null +++ b/bin/man1/pbd.1 @@ -0,0 +1,59 @@ +.Dd September 7, 2018 +.Dt PBD 1 +.Os +. +.Sh NAME +.Nm pbd , +.Nm pbcopy , +.Nm pbpaste , +.Nm open +.Nd macOS pasteboard daemon +. +.Sh SYNOPSIS +.Nm +.Nm pbcopy +.Nm pbpaste +.Nm open +.Ar +. +.Sh DESCRIPTION +.Nm +is a daemon which pipes into macOS +.Xr pbcopy 1 , +from +.Xr pbpaste 1 +and invokes +.Xr open 1 +in response to messages +sent over TCP port 7062. +. +.Pp +The socket can be forwarded through +.Xr ssh 1 +and the stub implementations of +.Nm pbcopy , +.Nm pbpaste +and +.Nm open +can be used remotely +to access the local pasteboard +and open URLs. +. +.Pp +Forwarding can be configured with: +.Pp +.Dl RemoteForward 7062 127.0.0.1:7062 +. +.Sh EXAMPLES +.Bd -literal -offset indent +pbd & +ssh -R 7062:127.0.0.1:7062 tux.local +pbpaste +.Ed +. +.Sh SEE ALSO +.Xr open 1 , +.Xr pbcopy 1 , +.Xr pbpaste 1 , +.Xr ssh 1 , +.Xr ssh_config 5 diff --git a/bin/man1/pngo.1 b/bin/man1/pngo.1 new file mode 100644 index 00000000..cec13160 --- /dev/null +++ b/bin/man1/pngo.1 @@ -0,0 +1,56 @@ +.Dd September 17, 2018 +.Dt PNGO 1 +.Os +. +.Sh NAME +.Nm pngo +.Nd PNG optimizer +. +.Sh SYNOPSIS +.Nm +.Op Fl cv +.Op Fl o Ar file +.Op Ar +. +.Sh DESCRIPTION +.Nm +optimizes PNG files for size. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl c +Write to standard output. +.It Fl o Ar file +Write to +.Ar file . +.It Fl v +Output PNG header information. +.El +. +.Pp +.Nm +performs the following optimizations: +.Bl -bullet +.It +Discard ancillary chunks. +.It +Discard unnecessary alpha channel. +.It +Convert unnecessary truecolor to grayscale. +.It +Palletize color and alpha if possible. +.It +Reduce bit depth if possible. +.It +Apply a simple filter heuristic. +.It +Apply zlib's best compresion. +.El +. +.Sh SEE ALSO +.Xr glitch 1 +. +.Sh CAVEATS +.Nm +does not support interlaced PNGs. diff --git a/bin/man1/psf2png.1 b/bin/man1/psf2png.1 new file mode 100644 index 00000000..db74c6e2 --- /dev/null +++ b/bin/man1/psf2png.1 @@ -0,0 +1,53 @@ +.Dd September 28, 2018 +.Dt PSF2PNG 1 +.Os +. +.Sh NAME +.Nm psf2png +.Nd PSF2 to PNG renderer +. +.Sh SYNOPSIS +.Nm +.Op Fl b Ar bg +.Op Fl c Ar cols +.Op Fl f Ar fg +.Op Fl s Ar str +.Op Ar file +. +.Sh DESCRIPTION +.Nm +renders the PSF2 font +.Ar file +or standard input +to PNG +on standard output. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl b Ar bg +Use +.Ar bg +(hexadecimal RGB) +as background color. +The default background color is black. +.It Fl c Ar cols +Arrange glyphs in +.Ar cols +columns. +The default number of columns is 32. +.It Fl f Ar fg +Use +.Ar fg +(hexadecimal RGB) +as foreground color. +The default foreground color is white. +.It Fl s Ar str +Render glyphs for string +.Ar str +rather than all glyphs. +.El +. +.Sh SEE ALSO +.Xr pngo 1 , +.Xr psfed 1 diff --git a/bin/man1/psfed.1 b/bin/man1/psfed.1 new file mode 100644 index 00000000..3fbc4710 --- /dev/null +++ b/bin/man1/psfed.1 @@ -0,0 +1,166 @@ +.Dd January 14, 2019 +.Dt PSFED 1 +.Os +. +.Sh NAME +.Nm psfed +.Nd PSF2 font editor +. +.Sh SYNOPSIS +.Nm +.Op Fl H Ar height +.Op Fl g Ar glyphs +.Op Fl h Ar height +.Op Fl w Ar width +.Ar file +. +.Sh DESCRIPTION +.Nm +is a PSF2 font editor +for the Linux framebuffer. +. +.Pp +The arguments are as follows: +. +.Bl -tag -width Ds +.It Fl H Ar height +Modify the height of an existing font. +Only increasing the height is allowed. +. +.It Fl g Ar glyphs +Set the number of glyphs in a new font. +The default number of glyphs is 256. +. +.It Fl h Ar height +Set the height of a new font. +The default height is 16. +. +.It Fl w Ar width +Set the width of a new font. +The default width is 8. +.El +. +.Ss Normal Mode +In normal mode, +each glyph is displayed in a grid. +. +.Pp +.Bl -tag -width Ds -compact +.It Ic q +Quit. +.Nm +will ask for confirmation +if the font has been modified +since the last write. +. +.It Ic w +Write font to +.Ar file . +. +.It Ic - Ic + +Adjust display scale. +. +.It Ic h Ic l +Select previous/next glyph. +. +.It Ic k Ic j +Select glyph in previous/next row. +. +.It Ic f +Select glyph of next input character. +. +.It Ic ' +Return to previously selected glyph. +. +.It Ic y +Copy selected glyph. +. +.It Ic e +Edit selected glyph in +.Sx Edit Mode . +. +.It Ic i +Enter +.Sx Preview Mode . +.El +. +.Ss Edit Mode +In edit mode, +the selected glyph is displayed for editing +surrounded by a checked border. +The glyph is also displayed unscaled +in the bottom-right corner. +. +.Pp +.Bl -tag -width Ds -compact +.It Ic ESC +Return to +.Sx Normal Mode . +. +.It Ic - Ic + +Adjust display scale. +. +.It Ic g Ic G +Toggle guide on selected column/row. +. +.It Ic h Ic l +Select previous/next bit in row. +. +.It Ic k Ic j +Select previous/next bit in column. +. +.It Ic SPACE +Flip selected bit. +. +.It Ic r +Invert glyph. +. +.It Ic H Ic L +Move glyph left/right. +. +.It Ic K Ic J +Move glyph up/down. +. +.It Ic p +Paste the copied glyph. +. +.It Ic u +Revert glyph to initial state. +.El +. +.Ss Preview Mode +In preview mode, +arbitrary text may be entered +for preview. +Press +.Ic ESC +to return to +.Sx Normal Mode . +. +.Sh ENVIRONMENT +.Bl -tag -width FRAMEBUFFER +.It Ev FRAMEBUFFER +The framebuffer device path. +The default path is +.Pa /dev/fb0 . +.El +. +.Sh SEE ALSO +.Xr psfaddtable 1 , +.Xr psfgettable 1 , +.Xr psfstriptable 1 , +.Xr setfont 8 +. +.Sh CAVEATS +.Nm +does not support Unicode tables. +Use +.Xr psfaddtable 1 +to add Unicode tables +to fonts created by +.Nm . +. +.Sh BUGS +.Nm +makes no attempt to convert header fields +to and from little-endian format. diff --git a/bin/man1/ptee.1 b/bin/man1/ptee.1 new file mode 100644 index 00000000..04f9cdac --- /dev/null +++ b/bin/man1/ptee.1 @@ -0,0 +1,40 @@ +.Dd July 17, 2019 +.Dt PTEE 1 +.Os +. +.Sh NAME +.Nm ptee +.Nd tee for PTYs +. +.Sh SYNOPSIS +.Nm +.Ar command ... +.Cm > +.Ar file +. +.Sh DESCRIPTION +.Nm +runs +.Ar command +in a new PTY +which is mirrored to +the current PTY +and standard output. +Standard output must be redirected +to a file or pipe. +. +.Pp +Type +.Ic ^S +to toggle writing to standard output. +Type +.Ic ^Q +to write the media copy sequence for +.Xr shotty 1 . +. +.Sh SEE ALSO +.Xr tee 1 +. +.Sh BUGS +Window size changes are not propagated +to the child PTY. diff --git a/bin/man1/relay.1 b/bin/man1/relay.1 new file mode 100644 index 00000000..402c4726 --- /dev/null +++ b/bin/man1/relay.1 @@ -0,0 +1,48 @@ +.Dd April 28, 2019 +.Dt RELAY 1 +.Os +. +.Sh NAME +.Nm relay +.Nd IRC relay bot +. +.Sh SYNOPSIS +.Nm +.Ar host +.Ar port +.Ar nick +.Ar chan +. +.Sh DESCRIPTION +.Nm +is one half of an IRC relay pair. +It connects to +.Ar host Ns : Ns Ar port +over TLS +as +.Ar nick +and joins +.Ar chan . +. +.Pp +.Nm +outputs messages from +.Ar chan +to standard output +and sends messages to +.Ar chan +from standard input. +Two +.Nm +processes can be connected with +.Xr mkfifo 1 . +. +.Sh EXAMPLES +.Bd -literal -offset indent +mkfifo a b +relay a.example.com 6697 relay '#example' <>a >b +relay b.example.com 6697 relay '#example' <>b >a +.Ed +. +.Sh SEE ALSO +.Xr mkfifo 1 diff --git a/bin/man1/scheme.1 b/bin/man1/scheme.1 new file mode 100644 index 00000000..9aa4f054 --- /dev/null +++ b/bin/man1/scheme.1 @@ -0,0 +1,56 @@ +.Dd July 6, 2019 +.Dt SCHEME 1 +.Os +. +.Sh NAME +.Nm scheme +.Nd color scheme +. +.Sh SYNOPSIS +.Nm +.Op Fl acghilmstx +.Op Fl p Ar n +. +.Sh DESCRIPTION +.Nm +generates a color scheme +and outputs it in a number of formats. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl a +Generate the 16 ANSI colors. +This is the default. +.It Fl c +Output a C enum. +.It Fl g +Output a swatch PNG. +.It Fl h +Output floating point HSV. +.It Fl i +Swap black and white. +.It Fl l +Output Linux console OSC sequences. +.It Fl m +Output a +.Xr mintty 1 +theme. +Use with +.Fl t . +.It Fl p Ar n +Generate only the color +.Ar n . +.It Fl s +Output CSS +for classes named +.Sy fg Ns Ar n +and +.Sy bg Ns Ar n . +.It Fl t +Generate the 16 ANSI colors as well as +background, foreground, bold, selection and cursor colors. +.It Fl x +Output hexadecimal RGB. +This is the default. +.El diff --git a/bin/man1/shotty.1 b/bin/man1/shotty.1 new file mode 100644 index 00000000..d5eaa780 --- /dev/null +++ b/bin/man1/shotty.1 @@ -0,0 +1,92 @@ +.Dd November 25, 2019 +.Dt SHOTTY 1 +.Os +. +.Sh NAME +.Nm shotty +.Nd terminal capture +. +.Sh SYNOPSIS +.Nm +.Op Fl Bdns +.Op Fl b Ar bg +.Op Fl f Ar fg +.Op Fl h Ar rows +.Op Fl w Ar cols +.Op Ar file +. +.Sh DESCRIPTION +.Nm +interprets terminal output from +.Ar file +or standard input +and produces HTML +.Sy <pre> +on standard output. +. +.Pp +Terminal output +can be captured with +.Xr ptee 1 . +.Nm +targets compatibility with +.Ev TERM Ns = Ns Cm xterm +and +.Ev TERM Ns = Ns Cm xterm-256color +as used by +.Xr ncurses 3 . +A snapshot of the terminal +is output each time +a media copy sequence occurs, +or once at the end of the capture. +. +.Pp +HTML output uses the classes +.Sy bg Ns Va n +and +.Sy fg Ns Va n , +and inline styles for +bold, italic and underline. +CSS for colors can be generated with +.Xr scheme 1 . +. +.Pp +The arguments are as follows: +.Bl -tag -width "-w cols" +.It Fl B +Replace bold with bright colors. +. +.It Fl b Ar bg +Set the default background color. +The default value is 0 (black). +. +.It Fl d +Output the terminal state +following each control sequence. +. +.It Fl f Ar fg +Set the default foreground color. +The default value is 7 (white). +. +.It Fl h Ar rows +Set the terminal height. +The default value is 24. +. +.It Fl n +Do not show the cursor. +. +.It Fl s +Set the terminal size +from the current terminal size. +. +.It Fl w Ar cols +Set the terminal width. +The default value is 80. +.El +. +.Sh EXAMPLES +.Dl ptee htop | shotty -s > htop.html +. +.Sh SEE ALSO +.Xr ptee 1 , +.Xr scheme 1 diff --git a/bin/man1/title.1 b/bin/man1/title.1 new file mode 100644 index 00000000..43ecc5e2 --- /dev/null +++ b/bin/man1/title.1 @@ -0,0 +1,51 @@ +.Dd September 10, 2019 +.Dt TITLE 1 +.Os +. +.Sh NAME +.Nm title +.Nd page titles +. +.Sh SYNOPSIS +.Nm +.Op Fl v +.Op Fl x Ar pattern +.Op Ar url +. +.Sh DESCRIPTION +.Nm +fetches HTML page titles +over HTTP and HTTPS. +.Nm +scans standard input for URLs +and writes their titles to standard output. +If a +.Ar url +argument is given, +.Nm +exits after fetching its title. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl x Ar pattern +Exclude URLs matching +.Ar pattern , +which is a modern regular expression. +See +.Xr re_format 7 . +.It Fl v +Enable +.Xr libcurl 3 +verbose output. +.El +. +.Sh EXAMPLES +.Bd -literal -offset indent +mkfifo snarf titles +relay irc.example.org 6697 snarf '#example' <>titles >snarf +title <snarf >titles +.Ed +. +.Sh SEE ALSO +.Xr relay 1 diff --git a/bin/man1/ttpre.1 b/bin/man1/ttpre.1 new file mode 100644 index 00000000..bd178525 --- /dev/null +++ b/bin/man1/ttpre.1 @@ -0,0 +1,32 @@ +.Dd October 8, 2018 +.Dt TTPRE 1 +.Os +. +.Sh NAME +.Nm ttpre +.Nd man output to HTML +. +.Sh SYNOPSIS +.Nm +. +.Sh DESCRIPTION +.Nm +formats +.Xr man 1 +output on standard input +as an HTML +.Sy <pre> +fragment on standard output. +Ampersands and angle brackets +are replaced with corresponding HTML entities, +and backspace formatting sequences +are replaced with +.Sy <i> +and +.Sy <b> +tags. +. +.Sh SEE ALSO +.Xr less 1 , +.Xr man 1 , +.Xr mandoc 1 diff --git a/bin/man1/up.1 b/bin/man1/up.1 new file mode 100644 index 00000000..58b5359f --- /dev/null +++ b/bin/man1/up.1 @@ -0,0 +1,76 @@ +.Dd July 15, 2019 +.Dt UP 1 +.Os +. +.Sh NAME +.Nm up +.Nd upload file +. +.Sh SYNOPSIS +.Nm +.Op Fl h +.Op Ar file +. +.Nm +.Fl c | t +.Ar command ... +. +.Nm +.Fl s +. +.Sh DESCRIPTION +.Nm +uploads a file +to temp.causal.agency with +.Xr scp 1 . +If no +.Ar file +is provided, +standard input is read +and uploaded as text. +. +.Pp +The destination file name +is chosen using +.Xr date 1 +and +.Xr openssl 1 +.Cm rand . +The URL of the uploaded file is printed +and copied to the pasteboard with +.Xr pbcopy 1 +if available. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl c +Run a command +to produce a text file for upload. +.It Fl h +Use +.Xr hi 1 +to produce an HTML file for upload. +.It Fl s +Use +.Xr screencapture 1 +to produce a PNG file for upload. +The file is optimized by +.Xr pngo 1 +if available. +.It Fl t +Run a command with +.Xr ptee 1 +and +.Xr shotty 1 +to produce an HTML file for upload. +.El +. +.Pp +Any arguments after +.Ql \-\- +are passed to +.Xr hi 1 +and +.Xr screencapture 1 , +respectively. diff --git a/bin/man1/when.1 b/bin/man1/when.1 new file mode 100644 index 00000000..0b473573 --- /dev/null +++ b/bin/man1/when.1 @@ -0,0 +1,76 @@ +.Dd July 24, 2019 +.Dt WHEN 1 +.Os +. +.Sh NAME +.Nm when +.Nd date calculator +. +.Sh SYNOPSIS +.Nm +.Op Ar expr +. +.Sh DESCRIPTION +.Nm +is a date calculator. +If no +.Ar expr +is given, +expressions are read +from standard input. +. +.Pp +The grammar is as follows: +.Bl -tag -width Ds +.It Sy \&. +Today's date. +. +.It Ar month Ar date Op Ar year +A full date, +or a date in the current year. +.Ar month +must be at least three letters. +. +.It Ar day +A day of the week +in the current week. +.Ar day +must be at least three letters. +. +.It Sy < Ar date +The date one week before. +. +.It Sy > Ar date +The date one week after. +. +.It Ar date Sy + Ar interval +The date after some interval. +. +.It Ar date Sy - Ar interval +The date before some interval. +. +.It Ar date Sy - Ar date +The interval between two dates. +. +.It Ar num Sy d +A number of days. +. +.It Ar num Sy w +A number of weeks. +. +.It Ar num Sy m +A number of months. +. +.It Ar num Sy y +A number of years. +.El +. +.Sh EXAMPLES +.Bl -tag -width "Dec 25 - ." +.It Ic Dec 25 - \&. +How long until Christmas. +.It Ic >Fri +The date next Friday. +.It Ic \&. + 2w +Your last day at work. +.El diff --git a/bin/man1/xx.1 b/bin/man1/xx.1 new file mode 100644 index 00000000..d38789a7 --- /dev/null +++ b/bin/man1/xx.1 @@ -0,0 +1,68 @@ +.Dd September 7, 2018 +.Dt XX 1 +.Os +. +.Sh NAME +.Nm xx +.Nd hexdump +. +.Sh SYNOPSIS +.Nm +.Op Fl arsz +.Op Fl c Ar cols +.Op Fl g Ar group +.Op Fl p Ar count +.Op Ar file +. +.Sh DESCRIPTION +.Nm +dumps the contents of a +.Ar file +or standard input +in hexadecimal format. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl a +Toggle ASCII output. +. +.It Fl c Ar cols +Output +.Ar cols +bytes per line. +The default +.Ar cols +is 16. +. +.It Fl g Ar group +Output extra space after every +.Ar group +bytes. +The default +.Ar group +is 8. +. +.It Fl p Ar count +Output a blank line after every +.Ar count +bytes. +.Ar count +must be a multiple of +.Ar cols . +. +.It Fl r +Reverse hexdump. +Read hexadecimal input +and write byte output. +. +.It Fl s +Toggle offset output. +. +.It Fl z +Skip output of lines containing only zeros. +.El +. +.Sh SEE ALSO +.Xr hexdump 1 , +.Xr xxd 1 diff --git a/bin/man3/png.3 b/bin/man3/png.3 new file mode 100644 index 00000000..accffbd7 --- /dev/null +++ b/bin/man3/png.3 @@ -0,0 +1,90 @@ +.Dd July 25, 2019 +.Dt PNG 3 +.Os +. +.Sh NAME +.Nm png +.Nd basic PNG output +. +.Sh SYNOPSIS +.In png.h +. +.Ft void +.Fo pngHead +.Fa "FILE *file" +.Fa "uint32_t width" +.Fa "uint32_t height" +.Fa "uint8_t depth" +.Fa "uint8_t color" +.Fc +. +.Ft void +.Fn pngPalette "FILE *file" "const uint8_t *pal" "uint32_t len" +. +.Ft void +.Fn pngData "FILE *file" "const uint8_t *data" "uint32_t len" +. +.Ft void +.Fn pngTail "FILE *file" +. +.Sh DESCRIPTION +The +.Fn pngHead +function +writes the +.Sy IHDR +chunk to +.Fa file . +The +.Fa color +parameter can be one of +.Dv PNGGrayscale , +.Dv PNGTruecolor +optionally +.Em or Ns 'ed +with +.Dv PNGAlpha , +or +.Dv PNGIndexed . +. +.Pp +The +.Fn pngPalette +function +writes the +.Sy PLTE +chunk to +.Fa file . +. +.Pp +The +.Fn pngData +function +writes the +.Sy IDAT +chunk to +.Fa file +without compression. +The constants +.Dv PNGNone , +.Dv PNGSub , +.Dv PNGUp , +.Dv PNGAverage , +.Dv PNGPaeth +are defined +for use in PNG data. +. +.Pp +The +.Fn pngTail +function +writes the +.Sy IEND +chunk to +.Fa file . +. +.Sh ERRORS +Any errors from writing to +.Fa file +are handled by calling +.Xr err 3 . diff --git a/bin/modem.c b/bin/modem.c new file mode 100644 index 00000000..2133ae08 --- /dev/null +++ b/bin/modem.c @@ -0,0 +1,102 @@ +/* Copyright (C) 2018 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <poll.h> +#include <stdlib.h> +#include <sys/ioctl.h> +#include <sys/wait.h> +#include <sysexits.h> +#include <termios.h> +#include <unistd.h> + +#if defined __FreeBSD__ +#include <libutil.h> +#elif defined __linux__ +#include <pty.h> +#else +#include <util.h> +#endif + +typedef unsigned uint; +typedef unsigned char byte; + +static struct termios saveTerm; +static void restoreTerm(void) { + tcsetattr(STDIN_FILENO, TCSADRAIN, &saveTerm); +} + +int main(int argc, char *argv[]) { + int error; + + uint baudRate = 19200; + for (int opt; 0 < (opt = getopt(argc, argv, "r:"));) { + switch (opt) { + break; case 'r': baudRate = strtoul(optarg, NULL, 10); + break; default: return EX_USAGE; + } + } + if (argc - optind < 1) return EX_USAGE; + + error = tcgetattr(STDIN_FILENO, &saveTerm); + if (error) err(EX_IOERR, "tcgetattr"); + atexit(restoreTerm); + + struct termios raw = saveTerm; + cfmakeraw(&raw); + error = tcsetattr(STDIN_FILENO, TCSADRAIN, &raw); + if (error) err(EX_IOERR, "tcsetattr"); + + struct winsize window; + error = ioctl(STDIN_FILENO, TIOCGWINSZ, &window); + if (error) err(EX_IOERR, "TIOCGWINSZ"); + + int pty; + pid_t pid = forkpty(&pty, NULL, NULL, &window); + if (pid < 0) err(EX_OSERR, "forkpty"); + + if (!pid) { + execvp(argv[optind], &argv[optind]); + err(EX_NOINPUT, "%s", argv[optind]); + } + + byte c; + struct pollfd fds[2] = { + { .events = POLLIN, .fd = STDIN_FILENO }, + { .events = POLLIN, .fd = pty }, + }; + while (usleep(8 * 1000000 / baudRate), 0 < poll(fds, 2, -1)) { + if (fds[0].revents) { + ssize_t size = read(STDIN_FILENO, &c, 1); + if (size < 0) err(EX_IOERR, "read(%d)", STDIN_FILENO); + size = write(pty, &c, 1); + if (size < 0) err(EX_IOERR, "write(%d)", pty); + } + + if (fds[1].revents) { + ssize_t size = read(pty, &c, 1); + if (size < 0) err(EX_IOERR, "read(%d)", pty); + if (!size) break; + size = write(STDOUT_FILENO, &c, 1); + if (size < 0) err(EX_IOERR, "write(%d)", STDOUT_FILENO); + } + } + + int status; + pid_t dead = waitpid(pid, &status, 0); + if (dead < 0) err(EX_OSERR, "waitpid"); + return WIFEXITED(status) ? WEXITSTATUS(status) : EX_SOFTWARE; +} diff --git a/bin/nudge.c b/bin/nudge.c new file mode 100644 index 00000000..108d2459 --- /dev/null +++ b/bin/nudge.c @@ -0,0 +1,78 @@ +/* Copyright (C) 2020 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <sysexits.h> +#include <termios.h> +#include <unistd.h> + +static int shake = 10; +static int delay = 20000; +static int count = 2; + +static void move(int tty, int x, int y) { + dprintf(tty, "\33[3;%d;%dt", x, y); + usleep(delay); +} + +int main(int argc, char *argv[]) { + const char *path = "/dev/tty"; + for (int opt; 0 < (opt = getopt(argc, argv, "f:n:s:t:"));) { + switch (opt) { + break; case 'f': path = optarg; + break; case 'n': count = atoi(optarg); + break; case 's': shake = atoi(optarg); + break; case 't': delay = atoi(optarg) * 1000; + break; default: return EX_USAGE; + } + } + + int tty = open(path, O_RDWR); + if (tty < 0) err(EX_OSFILE, "%s", path); + + struct termios save; + int error = tcgetattr(tty, &save); + if (error) err(EX_IOERR, "tcgetattr"); + + struct termios raw = save; + cfmakeraw(&raw); + error = tcsetattr(tty, TCSAFLUSH, &raw); + if (error) err(EX_IOERR, "tcsetattr"); + + char buf[256]; + dprintf(tty, "\33[13t"); + ssize_t len = read(tty, buf, sizeof(buf) - 1); + buf[(len < 0 ? 0 : len)] = '\0'; + + int x, y; + int n = sscanf(buf, "\33[3;%d;%dt", &x, &y); + + error = tcsetattr(tty, TCSANOW, &save); + if (error) err(EX_IOERR, "tcsetattr"); + if (n < 2) return EX_CONFIG; + + dprintf(tty, "\33[5t"); + for (int i = 0; i < count; ++i) { + move(tty, x - shake, y); + move(tty, x, y + shake); + move(tty, x + shake, y); + move(tty, x, y - shake); + move(tty, x, y); + } +} diff --git a/bin/order.y b/bin/order.y new file mode 100644 index 00000000..b798e634 --- /dev/null +++ b/bin/order.y @@ -0,0 +1,193 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +%{ + +#include <ctype.h> +#include <err.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> + +int vasprintf(char **ret, const char *format, va_list ap); + +static void yyerror(const char *str) { + errx(EX_DATAERR, "%s", str); +} + +#define YYSTYPE char * + +static char *fmt(const char *format, ...) { + char *str = NULL; + va_list ap; + va_start(ap, format); + vasprintf(&str, format, ap); + va_end(ap); + if (!str) err(EX_OSERR, "vasprintf"); + return str; +} + +static int yylex(void); + +%} + +%left ',' +%right '=' MulAss DivAss ModAss AddAss SubAss ShlAss ShrAss AndAss XorAss OrAss +%right '?' ':' +%left Or +%left And +%left '|' +%left '^' +%left '&' +%left Eq Ne +%left '<' Le '>' Ge +%left Shl Shr +%left '+' '-' +%left '*' '/' '%' +%right '!' '~' Inc Dec Sizeof +%left '(' ')' '[' ']' Arr '.' + +%token Var + +%% + +start: + expr { printf("%s\n", $1); } + ; + +expr: + Var + | '(' expr ')' { $$ = $2; } + | expr '[' expr ']' { $$ = fmt("(%s[%s])", $1, $3); } + | expr Arr Var { $$ = fmt("(%s->%s)", $1, $3); } + | expr '.' Var { $$ = fmt("(%s.%s)", $1, $3); } + | '!' expr { $$ = fmt("(!%s)", $2); } + | '~' expr { $$ = fmt("(~%s)", $2); } + | Inc expr { $$ = fmt("(++%s)", $2); } + | Dec expr { $$ = fmt("(--%s)", $2); } + | expr Inc { $$ = fmt("(%s++)", $1); } + | expr Dec { $$ = fmt("(%s--)", $1); } + | '-' expr %prec '!' { $$ = fmt("(-%s)", $2); } + | '*' expr %prec '!' { $$ = fmt("(*%s)", $2); } + | '&' expr %prec '!' { $$ = fmt("(&%s)", $2); } + | Sizeof expr { $$ = fmt("(sizeof %s)", $2); } + | expr '*' expr { $$ = fmt("(%s * %s)", $1, $3); } + | expr '/' expr { $$ = fmt("(%s / %s)", $1, $3); } + | expr '%' expr { $$ = fmt("(%s %% %s)", $1, $3); } + | expr '+' expr { $$ = fmt("(%s + %s)", $1, $3); } + | expr '-' expr { $$ = fmt("(%s - %s)", $1, $3); } + | expr Shl expr { $$ = fmt("(%s << %s)", $1, $3); } + | expr Shr expr { $$ = fmt("(%s >> %s)", $1, $3); } + | expr '<' expr { $$ = fmt("(%s < %s)", $1, $3); } + | expr Le expr { $$ = fmt("(%s <= %s)", $1, $3); } + | expr '>' expr { $$ = fmt("(%s > %s)", $1, $3); } + | expr Ge expr { $$ = fmt("(%s >= %s)", $1, $3); } + | expr Eq expr { $$ = fmt("(%s == %s)", $1, $3); } + | expr Ne expr { $$ = fmt("(%s != %s)", $1, $3); } + | expr '&' expr { $$ = fmt("(%s & %s)", $1, $3); } + | expr '^' expr { $$ = fmt("(%s ^ %s)", $1, $3); } + | expr '|' expr { $$ = fmt("(%s | %s)", $1, $3); } + | expr And expr { $$ = fmt("(%s && %s)", $1, $3); } + | expr Or expr { $$ = fmt("(%s || %s)", $1, $3); } + | expr '?' expr ':' expr { $$ = fmt("(%s ? %s : %s)", $1, $3, $5); } + | expr ass expr %prec '=' { $$ = fmt("(%s %s %s)", $1, $2, $3); } + | expr ',' expr { $$ = fmt("(%s, %s)", $1, $3); } + ; + +ass: + '=' { $$ = "="; } + | MulAss { $$ = "*="; } + | DivAss { $$ = "/="; } + | ModAss { $$ = "%="; } + | AddAss { $$ = "+="; } + | SubAss { $$ = "-="; } + | ShlAss { $$ = "<<="; } + | ShrAss { $$ = ">>="; } + | AndAss { $$ = "&="; } + | XorAss { $$ = "^="; } + | OrAss { $$ = "|="; } + ; + +%% + +#define T(a, b) ((int)(a) << 8 | (int)(b)) + +static const char *input; + +static int yylex(void) { + while (isspace(input[0])) input++; + if (!input[0]) return EOF; + + int len; + for (len = 0; isalnum(input[len]) || input[len] == '_'; ++len); + if (len) { + if (!strncmp(input, "sizeof", len)) { + input += len; + return Sizeof; + } + yylval = fmt("%.*s", len, input); + input += len; + return Var; + } + + int tok; + switch (T(input[0], input[1])) { + break; case T('-', '>'): tok = Arr; + break; case T('+', '+'): tok = Inc; + break; case T('-', '-'): tok = Dec; + break; case T('<', '<'): tok = Shl; + break; case T('>', '>'): tok = Shr; + break; case T('<', '='): tok = Le; + break; case T('>', '='): tok = Ge; + break; case T('=', '='): tok = Eq; + break; case T('!', '='): tok = Ne; + break; case T('&', '&'): tok = And; + break; case T('|', '|'): tok = Or; + break; case T('*', '='): tok = MulAss; + break; case T('/', '='): tok = DivAss; + break; case T('%', '='): tok = ModAss; + break; case T('+', '='): tok = AddAss; + break; case T('-', '='): tok = SubAss; + break; case T('&', '='): tok = AndAss; + break; case T('^', '='): tok = XorAss; + break; case T('|', '='): tok = OrAss; + break; default: return *input++; + } + input += 2; + + switch (T(tok, input[0])) { + case T(Shl, '='): input++; return ShlAss; + case T(Shr, '='): input++; return ShrAss; + } + + return tok; +} + +int main(int argc, char *argv[]) { + for (int i = 1; i < argc; ++i) { + input = argv[i]; + yyparse(); + } + if (argc > 1) return EX_OK; + size_t cap = 0; + char *buf = NULL; + while (0 < getline(&buf, &cap, stdin)) { + input = buf; + yyparse(); + } +} diff --git a/bin/pbd.c b/bin/pbd.c new file mode 100644 index 00000000..2ba333fd --- /dev/null +++ b/bin/pbd.c @@ -0,0 +1,152 @@ +/* Copyright (C) 2017 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <arpa/inet.h> +#include <err.h> +#include <fcntl.h> +#include <netinet/in.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/socket.h> +#include <sys/wait.h> +#include <sysexits.h> +#include <unistd.h> + +typedef unsigned char byte; + +static void spawn(const char *cmd, const char *arg, int dest, int src) { + pid_t pid = fork(); + if (pid < 0) err(EX_OSERR, "fork"); + + if (pid) { + int status; + pid_t dead = waitpid(pid, &status, 0); + if (dead < 0) err(EX_OSERR, "waitpid(%d)", pid); + if (status) warnx("%s: status %d", cmd, status); + + } else { + int fd = dup2(src, dest); + if (fd < 0) err(EX_OSERR, "dup2"); + + execlp(cmd, cmd, arg, NULL); + err(EX_UNAVAILABLE, "%s", cmd); + } +} + +static int pbd(void) { + int error; + + int server = socket(PF_INET, SOCK_STREAM, 0); + if (server < 0) err(EX_OSERR, "socket"); + + error = fcntl(server, F_SETFD, FD_CLOEXEC); + if (error) err(EX_IOERR, "fcntl"); + + struct sockaddr_in addr = { + .sin_family = AF_INET, + .sin_port = htons(7062), + .sin_addr = { .s_addr = htonl(0x7F000001) }, + }; + error = bind(server, (struct sockaddr *)&addr, sizeof(addr)); + if (error) err(EX_UNAVAILABLE, "bind"); + + error = listen(server, 0); + if (error) err(EX_UNAVAILABLE, "listen"); + + for (;;) { + int client = accept(server, NULL, NULL); + if (client < 0) err(EX_IOERR, "accept"); + + error = fcntl(client, F_SETFD, FD_CLOEXEC); + if (error) err(EX_IOERR, "fcntl"); + + char c = 0; + ssize_t size = read(client, &c, 1); + if (size < 0) warn("read"); + + switch (c) { + break; case 'p': spawn("pbpaste", NULL, STDOUT_FILENO, client); + break; case 'c': spawn("pbcopy", NULL, STDIN_FILENO, client); + break; case 'o': spawn("xargs", "open", STDIN_FILENO, client); + } + + close(client); + } +} + +static int pbdClient(char c) { + int client = socket(PF_INET, SOCK_STREAM, 0); + if (client < 0) err(EX_OSERR, "socket"); + + struct sockaddr_in addr = { + .sin_family = AF_INET, + .sin_port = htons(7062), + .sin_addr = { .s_addr = htonl(0x7F000001) }, + }; + int error = connect(client, (struct sockaddr *)&addr, sizeof(addr)); + if (error) err(EX_UNAVAILABLE, "connect"); + + ssize_t size = write(client, &c, 1); + if (size < 0) err(EX_IOERR, "write"); + + return client; +} + +static void copy(int out, int in) { + byte buf[4096]; + ssize_t readSize; + while (0 < (readSize = read(in, buf, sizeof(buf)))) { + ssize_t writeSize = write(out, buf, readSize); + if (writeSize < 0) err(EX_IOERR, "write(%d)", out); + } + if (readSize < 0) err(EX_IOERR, "read(%d)", in); +} + +static int pbcopy(void) { + int client = pbdClient('c'); + copy(client, STDIN_FILENO); + return EX_OK; +} + +static int pbpaste(void) { + int client = pbdClient('p'); + copy(STDOUT_FILENO, client); + return EX_OK; +} + +static int open1(const char *url) { + if (!url) return EX_USAGE; + int client = pbdClient('o'); + ssize_t size = write(client, url, strlen(url)); + if (size < 0) err(EX_IOERR, "write"); + return EX_OK; +} + +int main(int argc, char *argv[]) { + (void)argc; + if (strchr(argv[0], '/')) { + argv[0] = strrchr(argv[0], '/') + 1; + } + switch (argv[0][0] && argv[0][1] ? argv[0][2] : 0) { + case 'd': return pbd(); + case 'c': return pbcopy(); + case 'p': return pbpaste(); + case 'e': return open1(argv[1]); + default: return EX_USAGE; + } +} diff --git a/bin/png.h b/bin/png.h new file mode 100644 index 00000000..15b6d13d --- /dev/null +++ b/bin/png.h @@ -0,0 +1,108 @@ +/* Copyright (C) 2018 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <sysexits.h> + +static inline uint32_t pngCRCTable(uint8_t n) { + static uint32_t table[256]; + if (table[1]) return table[n]; + for (int i = 0; i < 256; ++i) { + table[i] = i; + for (int j = 0; j < 8; ++j) { + table[i] = (table[i] >> 1) ^ (table[i] & 1 ? 0xEDB88320 : 0); + } + } + return table[n]; +} + +static uint32_t pngCRC; + +static inline void pngWrite(FILE *file, const uint8_t *ptr, uint32_t len) { + if (!fwrite(ptr, len, 1, file)) err(EX_IOERR, "pngWrite"); + for (uint32_t i = 0; i < len; ++i) { + pngCRC = pngCRCTable(pngCRC ^ ptr[i]) ^ (pngCRC >> 8); + } +} +static inline void pngInt32(FILE *file, uint32_t n) { + pngWrite(file, (uint8_t []) { n >> 24, n >> 16, n >> 8, n }, 4); +} +static inline void pngChunk(FILE *file, char type[static 4], uint32_t len) { + pngInt32(file, len); + pngCRC = ~0; + pngWrite(file, (uint8_t *)type, 4); +} + +enum { + PNGGrayscale, + PNGTruecolor = 2, + PNGIndexed, + PNGAlpha, +}; + +static inline void pngHead( + FILE *file, uint32_t width, uint32_t height, uint8_t depth, uint8_t color +) { + pngWrite(file, (uint8_t *)"\x89PNG\r\n\x1A\n", 8); + pngChunk(file, "IHDR", 13); + pngInt32(file, width); + pngInt32(file, height); + pngWrite(file, &depth, 1); + pngWrite(file, &color, 1); + pngWrite(file, (uint8_t []) { 0, 0, 0 }, 3); + pngInt32(file, ~pngCRC); +} + +static inline void pngPalette(FILE *file, const uint8_t *pal, uint32_t len) { + pngChunk(file, "PLTE", len); + pngWrite(file, pal, len); + pngInt32(file, ~pngCRC); +} + +enum { + PNGNone, + PNGSub, + PNGUp, + PNGAverage, + PNGPaeth, +}; + +static inline void pngData(FILE *file, const uint8_t *data, uint32_t len) { + uint32_t adler1 = 1, adler2 = 0; + for (uint32_t i = 0; i < len; ++i) { + adler1 = (adler1 + data[i]) % 65521; + adler2 = (adler1 + adler2) % 65521; + } + uint32_t zlen = 2 + 5 * ((len + 0xFFFE) / 0xFFFF) + len + 4; + pngChunk(file, "IDAT", zlen); + pngWrite(file, (uint8_t []) { 0x08, 0x1D }, 2); + for (; len > 0xFFFF; data += 0xFFFF, len -= 0xFFFF) { + pngWrite(file, (uint8_t []) { 0x00, 0xFF, 0xFF, 0x00, 0x00 }, 5); + pngWrite(file, data, 0xFFFF); + } + pngWrite(file, (uint8_t []) { 0x01, len, len >> 8, ~len, ~len >> 8 }, 5); + pngWrite(file, data, len); + pngInt32(file, adler2 << 16 | adler1); + pngInt32(file, ~pngCRC); +} + +static inline void pngTail(FILE *file) { + pngChunk(file, "IEND", 0); + pngInt32(file, ~pngCRC); +} diff --git a/bin/pngo.c b/bin/pngo.c new file mode 100644 index 00000000..322cb1ba --- /dev/null +++ b/bin/pngo.c @@ -0,0 +1,812 @@ +/* Copyright (C) 2018 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <arpa/inet.h> +#include <err.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <unistd.h> +#include <zlib.h> + +#define PACKED __attribute__((packed)) +#define PAIR(a, b) ((uint16_t)(a) << 8 | (uint16_t)(b)) + +#define CRC_INIT (crc32(0, Z_NULL, 0)) + +static bool verbose; +static const char *path; +static FILE *file; +static uint32_t crc; + +static void readExpect(void *ptr, size_t size, const char *expect) { + fread(ptr, size, 1, file); + if (ferror(file)) err(EX_IOERR, "%s", path); + if (feof(file)) errx(EX_DATAERR, "%s: missing %s", path, expect); + crc = crc32(crc, ptr, size); +} + +static void writeExpect(const void *ptr, size_t size) { + fwrite(ptr, size, 1, file); + if (ferror(file)) err(EX_IOERR, "%s", path); + crc = crc32(crc, ptr, size); +} + +static const uint8_t Signature[8] = "\x89PNG\r\n\x1A\n"; + +static void readSignature(void) { + uint8_t signature[8]; + readExpect(signature, 8, "signature"); + if (0 != memcmp(signature, Signature, 8)) { + errx(EX_DATAERR, "%s: invalid signature", path); + } +} + +static void writeSignature(void) { + writeExpect(Signature, sizeof(Signature)); +} + +struct PACKED Chunk { + uint32_t size; + char type[4]; +}; + +static const char *typeStr(struct Chunk chunk) { + static char buf[5]; + memcpy(buf, chunk.type, 4); + return buf; +} + +static struct Chunk readChunk(void) { + struct Chunk chunk; + readExpect(&chunk, sizeof(chunk), "chunk"); + chunk.size = ntohl(chunk.size); + crc = crc32(CRC_INIT, (Byte *)chunk.type, sizeof(chunk.type)); + return chunk; +} + +static void writeChunk(struct Chunk chunk) { + chunk.size = htonl(chunk.size); + writeExpect(&chunk, sizeof(chunk)); + crc = crc32(CRC_INIT, (Byte *)chunk.type, sizeof(chunk.type)); +} + +static void readCrc(void) { + uint32_t expected = crc; + uint32_t found; + readExpect(&found, sizeof(found), "CRC32"); + found = ntohl(found); + if (found != expected) { + errx( + EX_DATAERR, "%s: expected CRC32 %08X, found %08X", + path, expected, found + ); + } +} + +static void writeCrc(void) { + uint32_t net = htonl(crc); + writeExpect(&net, sizeof(net)); +} + +static void skipChunk(struct Chunk chunk) { + if (!(chunk.type[0] & 0x20)) { + errx(EX_CONFIG, "%s: unsupported critical chunk %s", path, typeStr(chunk)); + } + uint8_t discard[4096]; + while (chunk.size > sizeof(discard)) { + readExpect(discard, sizeof(discard), "chunk data"); + chunk.size -= sizeof(discard); + } + if (chunk.size) readExpect(discard, chunk.size, "chunk data"); + readCrc(); +} + +static struct PACKED { + uint32_t width; + uint32_t height; + uint8_t depth; + enum PACKED { + Grayscale = 0, + Truecolor = 2, + Indexed = 3, + GrayscaleAlpha = 4, + TruecolorAlpha = 6, + } color; + enum PACKED { Deflate } compression; + enum PACKED { Adaptive } filter; + enum PACKED { Progressive, Adam7 } interlace; +} header; +_Static_assert(13 == sizeof(header), "header size"); + +static size_t pixelBits(void) { + switch (header.color) { + case Grayscale: return 1 * header.depth; + case Truecolor: return 3 * header.depth; + case Indexed: return 1 * header.depth; + case GrayscaleAlpha: return 2 * header.depth; + case TruecolorAlpha: return 4 * header.depth; + default: abort(); + } +} + +static size_t pixelSize(void) { + return (pixelBits() + 7) / 8; +} + +static size_t lineSize(void) { + return (header.width * pixelBits() + 7) / 8; +} + +static size_t dataSize(void) { + return (1 + lineSize()) * header.height; +} + +static const char *ColorStr[] = { + [Grayscale] = "grayscale", + [Truecolor] = "truecolor", + [Indexed] = "indexed", + [GrayscaleAlpha] = "grayscale alpha", + [TruecolorAlpha] = "truecolor alpha", +}; +static void printHeader(void) { + fprintf( + stderr, + "%s: %ux%u %hhu-bit %s\n", + path, + header.width, header.height, + header.depth, ColorStr[header.color] + ); +} + +static void readHeader(struct Chunk chunk) { + if (chunk.size != sizeof(header)) { + errx( + EX_DATAERR, "%s: expected IHDR size %zu, found %u", + path, sizeof(header), chunk.size + ); + } + readExpect(&header, sizeof(header), "header"); + readCrc(); + + header.width = ntohl(header.width); + header.height = ntohl(header.height); + + if (!header.width) errx(EX_DATAERR, "%s: invalid width 0", path); + if (!header.height) errx(EX_DATAERR, "%s: invalid height 0", path); + switch (PAIR(header.color, header.depth)) { + case PAIR(Grayscale, 1): + case PAIR(Grayscale, 2): + case PAIR(Grayscale, 4): + case PAIR(Grayscale, 8): + case PAIR(Grayscale, 16): + case PAIR(Truecolor, 8): + case PAIR(Truecolor, 16): + case PAIR(Indexed, 1): + case PAIR(Indexed, 2): + case PAIR(Indexed, 4): + case PAIR(Indexed, 8): + case PAIR(GrayscaleAlpha, 8): + case PAIR(GrayscaleAlpha, 16): + case PAIR(TruecolorAlpha, 8): + case PAIR(TruecolorAlpha, 16): + break; + default: + errx( + EX_DATAERR, "%s: invalid color type %hhu and bit depth %hhu", + path, header.color, header.depth + ); + } + if (header.compression != Deflate) { + errx( + EX_DATAERR, "%s: invalid compression method %hhu", + path, header.compression + ); + } + if (header.filter != Adaptive) { + errx(EX_DATAERR, "%s: invalid filter method %hhu", path, header.filter); + } + if (header.interlace > Adam7) { + errx(EX_DATAERR, "%s: invalid interlace method %hhu", path, header.interlace); + } + + if (verbose) printHeader(); +} + +static void writeHeader(void) { + if (verbose) printHeader(); + + struct Chunk ihdr = { .size = sizeof(header), .type = "IHDR" }; + writeChunk(ihdr); + header.width = htonl(header.width); + header.height = htonl(header.height); + writeExpect(&header, sizeof(header)); + writeCrc(); + + header.width = ntohl(header.width); + header.height = ntohl(header.height); +} + +static struct { + uint32_t len; + uint8_t entries[256][3]; +} palette; + +static struct { + uint32_t len; + uint8_t alpha[256]; +} trans; + +static void paletteClear(void) { + palette.len = 0; + trans.len = 0; +} + +static uint32_t paletteIndex(bool alpha, const uint8_t *rgba) { + uint32_t i; + for (i = 0; i < palette.len; ++i) { + if (alpha && i < trans.len && trans.alpha[i] != rgba[3]) continue; + if (0 == memcmp(palette.entries[i], rgba, 3)) break; + } + return i; +} + +static bool paletteAdd(bool alpha, const uint8_t *rgba) { + uint32_t i = paletteIndex(alpha, rgba); + if (i < palette.len) return true; + if (i == 256) return false; + memcpy(palette.entries[i], rgba, 3); + palette.len++; + if (alpha) { + trans.alpha[i] = rgba[3]; + trans.len++; + } + return true; +} + +static void transCompact(void) { + uint32_t i; + for (i = 0; i < trans.len; ++i) { + if (trans.alpha[i] == 0xFF) break; + } + if (i == trans.len) return; + + for (uint32_t j = i + 1; j < trans.len; ++j) { + if (trans.alpha[j] == 0xFF) continue; + + uint8_t alpha = trans.alpha[i]; + trans.alpha[i] = trans.alpha[j]; + trans.alpha[j] = alpha; + + uint8_t rgb[3]; + memcpy(rgb, palette.entries[i], 3); + memcpy(palette.entries[i], palette.entries[j], 3); + memcpy(palette.entries[j], rgb, 3); + + i++; + } + trans.len = i; +} + +static void readPalette(struct Chunk chunk) { + if (chunk.size % 3) { + errx(EX_DATAERR, "%s: PLTE size %u not divisible by 3", path, chunk.size); + } + + palette.len = chunk.size / 3; + if (palette.len > 256) { + errx(EX_DATAERR, "%s: PLTE length %u > 256", path, palette.len); + } + + readExpect(palette.entries, chunk.size, "palette data"); + readCrc(); + + if (verbose) fprintf(stderr, "%s: palette length %u\n", path, palette.len); +} + +static void writePalette(void) { + if (verbose) fprintf(stderr, "%s: palette length %u\n", path, palette.len); + struct Chunk plte = { .size = 3 * palette.len, .type = "PLTE" }; + writeChunk(plte); + writeExpect(palette.entries, plte.size); + writeCrc(); +} + +static void readTrans(struct Chunk chunk) { + trans.len = chunk.size; + if (trans.len > 256) { + errx(EX_DATAERR, "%s: tRNS length %u > 256", path, trans.len); + } + readExpect(trans.alpha, chunk.size, "transparency alpha"); + readCrc(); + if (verbose) fprintf(stderr, "%s: transparency length %u\n", path, trans.len); +} + +static void writeTrans(void) { + if (verbose) fprintf(stderr, "%s: transparency length %u\n", path, trans.len); + struct Chunk trns = { .size = trans.len, .type = "tRNS" }; + writeChunk(trns); + writeExpect(trans.alpha, trns.size); + writeCrc(); +} + +static uint8_t *data; + +static void allocData(void) { + data = malloc(dataSize()); + if (!data) err(EX_OSERR, "malloc(%zu)", dataSize()); +} + +static void readData(struct Chunk chunk) { + if (verbose) fprintf(stderr, "%s: data size %zu\n", path, dataSize()); + + struct z_stream_s stream = { .next_out = data, .avail_out = dataSize() }; + int error = inflateInit(&stream); + if (error != Z_OK) errx(EX_SOFTWARE, "%s: inflateInit: %s", path, stream.msg); + + for (;;) { + if (0 != memcmp(chunk.type, "IDAT", 4)) { + errx(EX_DATAERR, "%s: missing IDAT chunk", path); + } + + uint8_t *idat = malloc(chunk.size); + if (!idat) err(EX_OSERR, "malloc"); + + readExpect(idat, chunk.size, "image data"); + readCrc(); + + stream.next_in = idat; + stream.avail_in = chunk.size; + int error = inflate(&stream, Z_SYNC_FLUSH); + free(idat); + + if (error == Z_STREAM_END) break; + if (error != Z_OK) { + errx(EX_DATAERR, "%s: inflate: %s", path, stream.msg); + } + + chunk = readChunk(); + } + + inflateEnd(&stream); + if ((size_t)stream.total_out != dataSize()) { + errx( + EX_DATAERR, "%s: expected data size %zu, found %zu", + path, dataSize(), (size_t)stream.total_out + ); + } + + if (verbose) { + fprintf( + stderr, "%s: deflate size %zu\n", path, (size_t)stream.total_in + ); + } +} + +static void writeData(void) { + if (verbose) fprintf(stderr, "%s: data size %zu\n", path, dataSize()); + + uLong size = compressBound(dataSize()); + uint8_t *deflate = malloc(size); + if (!deflate) err(EX_OSERR, "malloc"); + + int error = compress2(deflate, &size, data, dataSize(), Z_BEST_COMPRESSION); + if (error != Z_OK) errx(EX_SOFTWARE, "%s: compress2: %d", path, error); + + struct Chunk idat = { .size = size, .type = "IDAT" }; + writeChunk(idat); + writeExpect(deflate, size); + writeCrc(); + + free(deflate); + + if (verbose) fprintf(stderr, "%s: deflate size %lu\n", path, size); +} + +static void writeEnd(void) { + struct Chunk iend = { .size = 0, .type = "IEND" }; + writeChunk(iend); + writeCrc(); +} + +enum PACKED Filter { + None, + Sub, + Up, + Average, + Paeth, + FilterCount, +}; + +struct Bytes { + uint8_t x; + uint8_t a; + uint8_t b; + uint8_t c; +}; + +static uint8_t paethPredictor(struct Bytes f) { + int32_t p = (int32_t)f.a + (int32_t)f.b - (int32_t)f.c; + int32_t pa = abs(p - (int32_t)f.a); + int32_t pb = abs(p - (int32_t)f.b); + int32_t pc = abs(p - (int32_t)f.c); + if (pa <= pb && pa <= pc) return f.a; + if (pb <= pc) return f.b; + return f.c; +} + +static uint8_t recon(enum Filter type, struct Bytes f) { + switch (type) { + case None: return f.x; + case Sub: return f.x + f.a; + case Up: return f.x + f.b; + case Average: return f.x + ((uint32_t)f.a + (uint32_t)f.b) / 2; + case Paeth: return f.x + paethPredictor(f); + default: abort(); + } +} + +static uint8_t filt(enum Filter type, struct Bytes f) { + switch (type) { + case None: return f.x; + case Sub: return f.x - f.a; + case Up: return f.x - f.b; + case Average: return f.x - ((uint32_t)f.a + (uint32_t)f.b) / 2; + case Paeth: return f.x - paethPredictor(f); + default: abort(); + } +} + +static struct Line { + enum Filter type; + uint8_t data[]; +} **lines; + +static void allocLines(void) { + lines = calloc(header.height, sizeof(*lines)); + if (!lines) err(EX_OSERR, "calloc(%u, %zu)", header.height, sizeof(*lines)); +} + +static void scanlines(void) { + size_t stride = 1 + lineSize(); + for (uint32_t y = 0; y < header.height; ++y) { + lines[y] = (struct Line *)&data[y * stride]; + if (lines[y]->type >= FilterCount) { + errx(EX_DATAERR, "%s: invalid filter type %hhu", path, lines[y]->type); + } + } +} + +static struct Bytes origBytes(uint32_t y, size_t i) { + bool a = (i >= pixelSize()), b = (y > 0), c = (a && b); + return (struct Bytes) { + .x = lines[y]->data[i], + .a = a ? lines[y]->data[i - pixelSize()] : 0, + .b = b ? lines[y - 1]->data[i] : 0, + .c = c ? lines[y - 1]->data[i - pixelSize()] : 0, + }; +} + +static void reconData(void) { + for (uint32_t y = 0; y < header.height; ++y) { + for (size_t i = 0; i < lineSize(); ++i) { + lines[y]->data[i] = + recon(lines[y]->type, origBytes(y, i)); + } + lines[y]->type = None; + } +} + +static void filterData(void) { + if (header.color == Indexed || header.depth < 8) return; + for (uint32_t y = header.height - 1; y < header.height; --y) { + uint8_t filter[FilterCount][lineSize()]; + uint32_t heuristic[FilterCount] = {0}; + enum Filter minType = None; + for (enum Filter type = None; type < FilterCount; ++type) { + for (size_t i = 0; i < lineSize(); ++i) { + filter[type][i] = filt(type, origBytes(y, i)); + heuristic[type] += abs((int8_t)filter[type][i]); + } + if (heuristic[type] < heuristic[minType]) minType = type; + } + lines[y]->type = minType; + memcpy(lines[y]->data, filter[minType], lineSize()); + } +} + +static void discardAlpha(void) { + if (header.color != GrayscaleAlpha && header.color != TruecolorAlpha) return; + size_t sampleSize = header.depth / 8; + size_t colorSize = pixelSize() - sampleSize; + for (uint32_t y = 0; y < header.height; ++y) { + for (uint32_t x = 0; x < header.width; ++x) { + for (size_t i = 0; i < sampleSize; ++i) { + if (lines[y]->data[x * pixelSize() + colorSize + i] != 0xFF) return; + } + } + } + + uint8_t *ptr = data; + for (uint32_t y = 0; y < header.height; ++y) { + *ptr++ = lines[y]->type; + for (uint32_t x = 0; x < header.width; ++x) { + memmove(ptr, &lines[y]->data[x * pixelSize()], colorSize); + ptr += colorSize; + } + } + header.color = (header.color == GrayscaleAlpha) ? Grayscale : Truecolor; + scanlines(); +} + +static void discardColor(void) { + if (header.color != Truecolor && header.color != TruecolorAlpha) return; + size_t sampleSize = header.depth / 8; + for (uint32_t y = 0; y < header.height; ++y) { + for (uint32_t x = 0; x < header.width; ++x) { + uint8_t *r = &lines[y]->data[x * pixelSize()]; + uint8_t *g = r + sampleSize; + uint8_t *b = g + sampleSize; + if (0 != memcmp(r, g, sampleSize)) return; + if (0 != memcmp(g, b, sampleSize)) return; + } + } + + uint8_t *ptr = data; + for (uint32_t y = 0; y < header.height; ++y) { + *ptr++ = lines[y]->type; + for (uint32_t x = 0; x < header.width; ++x) { + uint8_t *pixel = &lines[y]->data[x * pixelSize()]; + memmove(ptr, pixel, sampleSize); + ptr += sampleSize; + if (header.color == TruecolorAlpha) { + memmove(ptr, pixel + 3 * sampleSize, sampleSize); + ptr += sampleSize; + } + } + } + header.color = (header.color == Truecolor) ? Grayscale : GrayscaleAlpha; + scanlines(); +} + +static void indexColor(void) { + if (header.color != Truecolor && header.color != TruecolorAlpha) return; + if (header.depth != 8) return; + bool alpha = (header.color == TruecolorAlpha); + for (uint32_t y = 0; y < header.height; ++y) { + for (uint32_t x = 0; x < header.width; ++x) { + if (!paletteAdd(alpha, &lines[y]->data[x * pixelSize()])) return; + } + } + transCompact(); + + uint8_t *ptr = data; + for (uint32_t y = 0; y < header.height; ++y) { + *ptr++ = lines[y]->type; + for (uint32_t x = 0; x < header.width; ++x) { + *ptr++ = paletteIndex(alpha, &lines[y]->data[x * pixelSize()]); + } + } + header.color = Indexed; + scanlines(); +} + +static void reduceDepth8(void) { + if (header.color != Grayscale && header.color != Indexed) return; + if (header.depth != 8) return; + if (header.color == Grayscale) { + for (uint32_t y = 0; y < header.height; ++y) { + for (size_t i = 0; i < lineSize(); ++i) { + uint8_t a = lines[y]->data[i]; + if ((a >> 4) != (a & 0x0F)) return; + } + } + } else if (palette.len > 16) { + return; + } + + uint8_t *ptr = data; + for (uint32_t y = 0; y < header.height; ++y) { + *ptr++ = lines[y]->type; + for (size_t i = 0; i < lineSize(); i += 2) { + uint8_t iByte = lines[y]->data[i]; + uint8_t jByte = (i + 1 < lineSize()) ? lines[y]->data[i + 1] : 0; + uint8_t a = iByte & 0x0F; + uint8_t b = jByte & 0x0F; + *ptr++ = a << 4 | b; + } + } + header.depth = 4; + scanlines(); +} + +static void reduceDepth4(void) { + if (header.depth != 4) return; + if (header.color == Grayscale) { + for (uint32_t y = 0; y < header.height; ++y) { + for (size_t i = 0; i < lineSize(); ++i) { + uint8_t a = lines[y]->data[i] >> 4; + uint8_t b = lines[y]->data[i] & 0x0F; + if ((a >> 2) != (a & 0x03)) return; + if ((b >> 2) != (b & 0x03)) return; + } + } + } else if (palette.len > 4) { + return; + } + + uint8_t *ptr = data; + for (uint32_t y = 0; y < header.height; ++y) { + *ptr++ = lines[y]->type; + for (size_t i = 0; i < lineSize(); i += 2) { + uint8_t iByte = lines[y]->data[i]; + uint8_t jByte = (i + 1 < lineSize()) ? lines[y]->data[i + 1] : 0; + uint8_t a = iByte >> 4 & 0x03, b = iByte & 0x03; + uint8_t c = jByte >> 4 & 0x03, d = jByte & 0x03; + *ptr++ = a << 6 | b << 4 | c << 2 | d; + } + } + header.depth = 2; + scanlines(); +} + +static void reduceDepth2(void) { + if (header.depth != 2) return; + if (header.color == Grayscale) { + for (uint32_t y = 0; y < header.height; ++y) { + for (size_t i = 0; i < lineSize(); ++i) { + uint8_t a = lines[y]->data[i] >> 6; + uint8_t b = lines[y]->data[i] >> 4 & 0x03; + uint8_t c = lines[y]->data[i] >> 2 & 0x03; + uint8_t d = lines[y]->data[i] & 0x03; + if ((a >> 1) != (a & 0x01)) return; + if ((b >> 1) != (b & 0x01)) return; + if ((c >> 1) != (c & 0x01)) return; + if ((d >> 1) != (d & 0x01)) return; + } + } + } else if (palette.len > 2) { + return; + } + + uint8_t *ptr = data; + for (uint32_t y = 0; y < header.height; ++y) { + *ptr++ = lines[y]->type; + for (size_t i = 0; i < lineSize(); i += 2) { + uint8_t iByte = lines[y]->data[i]; + uint8_t jByte = (i + 1 < lineSize()) ? lines[y]->data[i + 1] : 0; + uint8_t a = iByte >> 6 & 0x01, b = iByte >> 4 & 0x01; + uint8_t c = iByte >> 2 & 0x01, d = iByte & 0x01; + uint8_t e = jByte >> 6 & 0x01, f = jByte >> 4 & 0x01; + uint8_t g = jByte >> 2 & 0x01, h = jByte & 0x01; + *ptr++ = a << 7 | b << 6 | c << 5 | d << 4 | e << 3 | f << 2 | g << 1 | h; + } + } + header.depth = 1; + scanlines(); +} + +static void reduceDepth(void) { + reduceDepth8(); + reduceDepth4(); + reduceDepth2(); +} + +static void optimize(const char *inPath, const char *outPath) { + if (inPath) { + path = inPath; + file = fopen(path, "r"); + if (!file) err(EX_NOINPUT, "%s", path); + } else { + path = "(stdin)"; + file = stdin; + } + + readSignature(); + struct Chunk ihdr = readChunk(); + if (0 != memcmp(ihdr.type, "IHDR", 4)) { + errx(EX_DATAERR, "%s: expected IHDR, found %s", path, typeStr(ihdr)); + } + readHeader(ihdr); + if (header.interlace != Progressive) { + errx( + EX_CONFIG, "%s: unsupported interlace method %hhu", + path, header.interlace + ); + } + + paletteClear(); + allocData(); + for (;;) { + struct Chunk chunk = readChunk(); + if (0 == memcmp(chunk.type, "PLTE", 4)) { + readPalette(chunk); + } else if (0 == memcmp(chunk.type, "tRNS", 4)) { + readTrans(chunk); + } else if (0 == memcmp(chunk.type, "IDAT", 4)) { + readData(chunk); + } else if (0 != memcmp(chunk.type, "IEND", 4)) { + skipChunk(chunk); + } else { + break; + } + } + + fclose(file); + + allocLines(); + scanlines(); + reconData(); + + discardAlpha(); + discardColor(); + indexColor(); + reduceDepth(); + filterData(); + free(lines); + + if (outPath) { + path = outPath; + file = fopen(path, "w"); + if (!file) err(EX_CANTCREAT, "%s", path); + } else { + path = "(stdout)"; + file = stdout; + } + + writeSignature(); + writeHeader(); + if (header.color == Indexed) { + writePalette(); + if (trans.len) writeTrans(); + } + writeData(); + writeEnd(); + free(data); + + int error = fclose(file); + if (error) err(EX_IOERR, "%s", path); +} + +int main(int argc, char *argv[]) { + bool stdio = false; + char *output = NULL; + + int opt; + while (0 < (opt = getopt(argc, argv, "co:v"))) { + switch (opt) { + break; case 'c': stdio = true; + break; case 'o': output = optarg; + break; case 'v': verbose = true; + break; default: return EX_USAGE; + } + } + + if (argc - optind == 1 && (output || stdio)) { + optimize(argv[optind], output); + } else if (optind < argc) { + for (int i = optind; i < argc; ++i) { + optimize(argv[i], argv[i]); + } + } else { + optimize(NULL, output); + } + + return EX_OK; +} diff --git a/bin/psf2png.c b/bin/psf2png.c new file mode 100644 index 00000000..1aaa8635 --- /dev/null +++ b/bin/psf2png.c @@ -0,0 +1,107 @@ +/* Copyright (C) 2018 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <unistd.h> + +#include "png.h" + +int main(int argc, char *argv[]) { + uint32_t cols = 32; + const char *str = NULL; + uint32_t fg = 0xFFFFFF; + uint32_t bg = 0x000000; + + int opt; + while (0 < (opt = getopt(argc, argv, "b:c:f:s:"))) { + switch (opt) { + break; case 'b': bg = strtoul(optarg, NULL, 16); + break; case 'c': cols = strtoul(optarg, NULL, 0); + break; case 'f': fg = strtoul(optarg, NULL, 16); + break; case 's': str = optarg; + break; default: return EX_USAGE; + } + } + if (!cols && str) cols = strlen(str); + if (!cols) return EX_USAGE; + + const char *path = NULL; + if (optind < argc) path = argv[optind]; + + FILE *file = path ? fopen(path, "r") : stdin; + if (!file) err(EX_NOINPUT, "%s", path); + if (!path) path = "(stdin)"; + + struct { + uint32_t magic; + uint32_t version; + uint32_t size; + uint32_t flags; + struct { + uint32_t len; + uint32_t size; + uint32_t height; + uint32_t width; + } glyph; + } header; + size_t len = fread(&header, sizeof(header), 1, file); + if (ferror(file)) err(EX_IOERR, "%s", path); + if (len < 1) errx(EX_DATAERR, "%s: truncated header", path); + + uint32_t widthBytes = (header.glyph.width + 7) / 8; + uint8_t glyphs[header.glyph.len][header.glyph.height][widthBytes]; + len = fread(glyphs, header.glyph.size, header.glyph.len, file); + if (ferror(file)) err(EX_IOERR, "%s", path); + if (len < header.glyph.len) { + errx(EX_DATAERR, "%s: truncated glyphs", path); + } + fclose(file); + + uint32_t count = (str ? strlen(str) : header.glyph.len); + uint32_t width = header.glyph.width * cols; + uint32_t rows = (count + cols - 1) / cols; + uint32_t height = header.glyph.height * rows; + + pngHead(stdout, width, height, 8, PNGIndexed); + uint8_t pal[] = { + bg >> 16, bg >> 8, bg, + fg >> 16, fg >> 8, fg, + }; + pngPalette(stdout, pal, sizeof(pal)); + + uint8_t data[height][1 + width]; + memset(data, PNGNone, sizeof(data)); + + for (uint32_t i = 0; i < count; ++i) { + uint32_t row = header.glyph.height * (i / cols); + uint32_t col = 1 + header.glyph.width * (i % cols); + uint32_t g = (str ? str[i] : i); + for (uint32_t y = 0; y < header.glyph.height; ++y) { + for (uint32_t x = 0; x < header.glyph.width; ++x) { + uint8_t bit = glyphs[g][y][x / 8] >> (7 - x % 8) & 1; + data[row + y][col + x] = bit; + } + } + } + + pngData(stdout, (uint8_t *)data, sizeof(data)); + pngTail(stdout); +} diff --git a/bin/psfed.c b/bin/psfed.c new file mode 100644 index 00000000..4f46b500 --- /dev/null +++ b/bin/psfed.c @@ -0,0 +1,577 @@ +/* Copyright (C) 2018 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <linux/fb.h> +#include <locale.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sysexits.h> +#include <termios.h> +#include <unistd.h> +#include <wchar.h> + +static const wchar_t CP437[256] = + L"\0☺☻♥♦♣♠•◘○◙♂♀♪♫☼" + L"►◄↕‼¶§▬↨↑↓→â†âˆŸâ†”▲▼" + L" !\"#$%&'()*+,-./" + L"0123456789:;<=>?" + L"@ABCDEFGHIJKLMNO" + L"PQRSTUVWXYZ[\\]^_" + L"`abcdefghijklmno" + L"pqrstuvwxyz{|}~⌂" + L"Çüéâäà åçêëèïîìÄÅ" + L"ÉæÆôöòûùÿÖÜ¢£¥₧ƒ" + L"áÃóúñѪº¿âŒÂ¬Â½Â¼Â¡Â«Â»" + L"░▒▓│┤╡╢╖╕╣║╗â•â•œâ•›â”" + L"└┴┬├─┼╞╟╚╔╩╦╠â•â•¬â•§" + L"╨╤╥╙╘╒╓╫╪┘┌█▄▌â–â–€" + L"αßΓπΣσµτΦΘΩδ∞φε∩" + L"≡±≥≤⌠⌡÷≈°∙·√â¿Â²â– \0"; + +static struct { + uint32_t width; + uint32_t height; + uint32_t *buffer; + uint32_t background; +} frame; + +static void frameClear(void) { + for (uint32_t i = 0; i < frame.width * frame.height; ++i) { + frame.buffer[i] = frame.background; + } +} + +static void frameOpen(void) { + const char *dev = getenv("FRAMEBUFFER"); + if (!dev) dev = "/dev/fb0"; + + int fd = open(dev, O_RDWR); + if (fd < 0) err(EX_OSFILE, "%s", dev); + + struct fb_var_screeninfo info; + int error = ioctl(fd, FBIOGET_VSCREENINFO, &info); + if (error) err(EX_IOERR, "%s", dev); + + frame.width = info.xres; + frame.height = 3 * info.yres / 4; + frame.buffer = mmap( + NULL, sizeof(*frame.buffer) * frame.width * frame.height, + PROT_READ | PROT_WRITE, MAP_SHARED, + fd, 0 + ); + if (frame.buffer == MAP_FAILED) err(EX_IOERR, "%s", dev); + close(fd); + + frame.background = frame.buffer[0]; + atexit(frameClear); +} + +static const uint32_t Magic = 0x864AB572; +static const uint32_t Version = 0; +static const uint32_t FlagUnicode = 1 << 0; +static uint32_t bytes(uint32_t bits) { + return (bits + 7) / 8; +} + +static char *path; +static struct { + uint32_t magic; + uint32_t version; + uint32_t size; + uint32_t flags; + struct { + uint32_t len; + uint32_t size; + uint32_t height; + uint32_t width; + } glyph; +} header; +static uint8_t *glyphs; + +static void fileRead(uint32_t newLen, uint32_t newWidth, uint32_t newHeight) { + FILE *file = fopen(path, "r"); + if (file) { + size_t len = fread(&header, sizeof(header), 1, file); + if (ferror(file)) err(EX_IOERR, "%s", path); + if (len < 1) errx(EX_DATAERR, "%s: truncated header", path); + + } else { + if (errno != ENOENT) err(EX_NOINPUT, "%s", path); + header.magic = Magic; + header.version = Version; + header.size = sizeof(header); + header.flags = 0; + header.glyph.len = newLen; + header.glyph.size = bytes(newWidth) * newHeight; + header.glyph.height = newHeight; + header.glyph.width = newWidth; + } + + if (header.magic != Magic) { + errx(EX_DATAERR, "%s: invalid magic %08X", path, header.magic); + } + if (header.version != Version) { + errx(EX_DATAERR, "%s: unsupported version %u", path, header.version); + } + if (header.flags & FlagUnicode) { + errx(EX_DATAERR, "%s: unsupported unicode table", path); + } + if (header.flags) { + errx(EX_DATAERR, "%s: unsupported flags %08X", path, header.flags); + } + + if (file && header.size > sizeof(header)) { + int error = fseek(file, header.size, SEEK_SET); + if (error) err(EX_IOERR, "%s", path); + + warnx("%s: truncating long header", path); + header.size = sizeof(header); + } + + glyphs = calloc(header.glyph.len, header.glyph.size); + if (!glyphs) err(EX_OSERR, "calloc"); + + if (file) { + size_t len = fread(glyphs, header.glyph.size, header.glyph.len, file); + if (ferror(file)) err(EX_IOERR, "%s", path); + if (len < header.glyph.len) { + errx(EX_DATAERR, "%s: truncated glyphs", path); + } + fclose(file); + } +} + +static void fileWrite(void) { + FILE *file = fopen(path, "w"); + if (!file) err(EX_CANTCREAT, "%s", path); + + fwrite(&header, sizeof(header), 1, file); + if (ferror(file)) err(EX_IOERR, "%s", path); + + fwrite(glyphs, header.glyph.size, header.glyph.len, file); + if (ferror(file)) err(EX_IOERR, "%s", path); + + int error = fclose(file); + if (error) err(EX_IOERR, "%s", path); +} + +static uint8_t *glyph(uint32_t index) { + return &glyphs[header.glyph.size * index]; +} +static uint8_t *bitByte(uint32_t index, uint32_t x, uint32_t y) { + return &glyph(index)[bytes(header.glyph.width) * y + x / 8]; +} +static uint8_t bitGet(uint32_t index, uint32_t x, uint32_t y) { + return *bitByte(index, x, y) >> (7 - x % 8) & 1; +} +static void bitFlip(uint32_t index, uint32_t x, uint32_t y) { + *bitByte(index, x, y) ^= 1 << (7 - x % 8); +} +static void bitSet(uint32_t index, uint32_t x, uint32_t y, uint8_t bit) { + *bitByte(index, x, y) &= ~(1 << (7 - x % 8)); + *bitByte(index, x, y) |= bit << (7 - x % 8); +} + +static void drawGlyph( + uint32_t destX, uint32_t destY, uint32_t scale, uint32_t index, + uint32_t selectX, uint32_t selectY, uint32_t guideX, uint32_t guideY +) { + destX <<= scale; + destY <<= scale; + + for (uint32_t y = 0; y < (header.glyph.height << scale); ++y) { + if (destY + y >= frame.height) break; + for (uint32_t x = 0; x < (header.glyph.width << scale); ++x) { + if (destX + x >= frame.width) break; + + uint32_t glyphX = x >> scale; + uint32_t glyphY = y >> scale; + uint32_t fill = -bitGet(index, glyphX, glyphY); + if (selectX & 1 << glyphX && selectY & 1 << glyphY) fill ^= 0x77; + if (guideX & 1 << glyphX || guideY & 1 << glyphY) fill ^= 0x3300; + + frame.buffer[frame.width * (destY + y) + destX + x] = fill; + } + } +} + +static void drawBorder(uint32_t destX, uint32_t destY, uint32_t scale) { + destX <<= scale; + destY <<= scale; + + for (uint32_t y = 0; y < destY; ++y) { + if (y >= frame.height) break; + uint32_t fill = -(y >> scale & 1) ^ 0x555555; + for (uint32_t x = 0; x < (uint32_t)(1 << scale); ++x) { + if (destX + x >= frame.width) break; + frame.buffer[frame.width * y + destX + x] = fill; + } + } + + for (uint32_t x = 0; x < destX; ++x) { + if (x >= frame.width) break; + uint32_t fill = -(x >> scale & 1) ^ 0x555555; + for (uint32_t y = 0; y < (uint32_t)(1 << scale); ++y) { + if (destY + y >= frame.height) break; + frame.buffer[frame.width * (destY + y) + x] = fill; + } + } +} + +enum { LF = '\n', Esc = '\33', Del = '\177' }; + +static enum { + Normal, + Edit, + Preview, + Discard, +} mode; + +static struct { + uint32_t scale; + uint32_t index; + bool modified; + bool to; + uint32_t from; +} normal; + +static struct { + uint32_t scale; + uint32_t index; + uint32_t x; + uint32_t y; + uint32_t guideX; + uint32_t guideY; + uint8_t *undo; + uint8_t *copy; +} edit = { + .scale = 4, +}; + +static const uint32_t NormalCols = 32; +static void drawNormal(void) { + for (uint32_t i = 0; i < header.glyph.len; ++i) { + drawGlyph( + header.glyph.width * (i % NormalCols), + header.glyph.height * (i / NormalCols), + normal.scale, i, + -(i == normal.index), -(i == normal.index), 0, 0 + ); + } +} + +static void normalDec(uint32_t n) { + if (normal.index >= n) normal.index -= n; +} +static void normalInc(uint32_t n) { + if (normal.index + n < header.glyph.len) normal.index += n; +} +static void normalPrint(const char *prefix) { + if (normal.index <= 256) { + printf( + "%s: %02X '%lc'\n", + prefix, normal.index, (wint_t)CP437[normal.index] + ); + } else { + printf("%s: %02X\n", prefix, normal.index); + } +} + +static void inputNormal(char ch) { + if (normal.to) { + if (ch < header.glyph.len) normal.index = ch; + normalPrint("index"); + normal.to = false; + return; + } + + switch (ch) { + break; case 'q': { + if (!normal.modified) exit(EX_OK); + mode = Discard; + } + break; case 'w': { + fileWrite(); + printf("write: %s\n", path); + normal.modified = false; + } + break; case '-': if (normal.scale) normal.scale--; frameClear(); + break; case '+': normal.scale++; + break; case 'h': normalDec(1); normalPrint("index"); + break; case 'l': normalInc(1); normalPrint("index"); + break; case 'k': normalDec(NormalCols); normalPrint("index"); + break; case 'j': normalInc(NormalCols); normalPrint("index"); + break; case 'f': normal.from = normal.index; normal.to = true; + break; case 047: normal.index = normal.from; normalPrint("index"); + break; case 'y': { + if (!edit.copy) edit.copy = malloc(header.glyph.size); + if (!edit.copy) err(EX_OSERR, "malloc"); + memcpy(edit.copy, glyph(normal.index), header.glyph.size); + normalPrint("copy"); + } + break; case 'e': { + normal.modified = true; + edit.index = normal.index; + if (!edit.undo) edit.undo = malloc(header.glyph.size); + if (!edit.undo) err(EX_OSERR, "malloc"); + memcpy(edit.undo, glyph(edit.index), header.glyph.size); + mode = Edit; + frameClear(); + } + break; case 'i': mode = Preview; frameClear(); + } +} + +static void drawEdit(void) { + drawGlyph( + 0, 0, edit.scale, edit.index, + 1 << edit.x, 1 << edit.y, edit.guideX, edit.guideY + ); + drawBorder(header.glyph.width, header.glyph.height, edit.scale); + drawGlyph( + header.glyph.width << edit.scale, + header.glyph.height << edit.scale, + 0, edit.index, + 0, 0, 0, 0 + ); +} + +static void inputEdit(char ch) { + switch (ch) { + break; case Esc: mode = Normal; frameClear(); + + break; case '-': if (edit.scale) edit.scale--; frameClear(); + break; case '+': edit.scale++; + break; case 'g': edit.guideY ^= 1 << edit.y; + break; case 'G': edit.guideX ^= 1 << edit.x; + + break; case 'h': if (edit.x) edit.x--; + break; case 'l': if (edit.x + 1 < header.glyph.width) edit.x++; + break; case 'k': if (edit.y) edit.y--; + break; case 'j': if (edit.y + 1 < header.glyph.height) edit.y++; + break; case ' ': bitFlip(edit.index, edit.x, edit.y); + + break; case 'r': { + for (uint32_t y = 0; y < header.glyph.height; ++y) { + for (uint32_t x = 0; x < header.glyph.width; ++x) { + bitFlip(edit.index, x, y); + } + } + } + + break; case 'H': { + for (uint32_t x = 0; x < header.glyph.width; ++x) { + for (uint32_t y = 0; y < header.glyph.height; ++y) { + if (x + 1 < header.glyph.width) { + bitSet(edit.index, x, y, bitGet(edit.index, x + 1, y)); + } else { + bitSet(edit.index, x, y, 0); + } + } + } + } + + break; case 'L': { + uint32_t width = header.glyph.width; + for (uint32_t x = width - 1; x < width; --x) { + for (uint32_t y = 0; y < header.glyph.height; ++y) { + if (x - 1 < width) { + bitSet(edit.index, x, y, bitGet(edit.index, x - 1, y)); + } else { + bitSet(edit.index, x, y, 0); + } + } + } + } + + break; case 'K': { + for (uint32_t y = 0; y < header.glyph.height; ++y) { + for (uint32_t x = 0; x < header.glyph.width; ++x) { + if (y + 1 < header.glyph.height) { + bitSet(edit.index, x, y, bitGet(edit.index, x, y + 1)); + } else { + bitSet(edit.index, x, y, 0); + } + } + } + } + + break; case 'J': { + uint32_t height = header.glyph.height; + for (uint32_t y = height - 1; y < height; --y) { + for (uint32_t x = 0; x < header.glyph.width; ++x) { + if (y - 1 < height) { + bitSet(edit.index, x, y, bitGet(edit.index, x, y - 1)); + } else { + bitSet(edit.index, x, y, 0); + } + } + } + } + + break; case 'p': { + if (!edit.copy) break; + memcpy(glyph(edit.index), edit.copy, header.glyph.size); + } + break; case 'u': { + if (!edit.undo) break; + memcpy(glyph(edit.index), edit.undo, header.glyph.size); + } + } +} + +enum { PreviewRows = 8, PreviewCols = 64 }; +static struct { + uint32_t glyphs[PreviewRows * PreviewCols]; + uint32_t index; +} preview; + +static void drawPreview(void) { + for (uint32_t i = 0; i < PreviewRows * PreviewCols; ++i) { + drawGlyph( + header.glyph.width * (i % PreviewCols), + header.glyph.height * (i / PreviewCols), + 0, preview.glyphs[i], + -(i == preview.index), -(i == preview.index), 0, 0 + ); + } +} + +static void inputPreview(char ch) { + switch (ch) { + break; case Esc: mode = Normal; frameClear(); + break; case Del: { + if (preview.index) preview.index--; + preview.glyphs[preview.index] = 0; + } + break; case LF: { + uint32_t tail = PreviewCols - (preview.index % PreviewCols); + memset( + &preview.glyphs[preview.index], + 0, sizeof(preview.glyphs[0]) * tail + ); + preview.index += tail; + } + break; default: preview.glyphs[preview.index++] = ch; + } + preview.index %= PreviewRows * PreviewCols; +} + +static void drawDiscard(void) { + printf("discard modifications? "); + fflush(stdout); +} + +static void inputDiscard(char ch) { + printf("%c\n", ch); + if (ch == 'Y' || ch == 'y') exit(EX_OK); + mode = Normal; +} + +static void draw(void) { + switch (mode) { + break; case Normal: drawNormal(); + break; case Edit: drawEdit(); + break; case Preview: drawPreview(); + break; case Discard: drawDiscard(); + } +} + +static void input(char ch) { + switch (mode) { + break; case Normal: inputNormal(ch); + break; case Edit: inputEdit(ch); + break; case Preview: inputPreview(ch); + break; case Discard: inputDiscard(ch); + } +} + +static struct termios saveTerm; +static void restoreTerm(void) { + tcsetattr(STDIN_FILENO, TCSADRAIN, &saveTerm); +} + +int main(int argc, char *argv[]) { + setlocale(LC_CTYPE, ""); + + uint32_t newLen = 256; + uint32_t newWidth = 8; + uint32_t newHeight = 16; + uint32_t setHeight = 0; + + int opt; + while (0 < (opt = getopt(argc, argv, "H:g:h:w:"))) { + switch (opt) { + break; case 'H': setHeight = strtoul(optarg, NULL, 0); + break; case 'g': newLen = strtoul(optarg, NULL, 0); + break; case 'h': newHeight = strtoul(optarg, NULL, 0); + break; case 'w': newWidth = strtoul(optarg, NULL, 0); + break; default: return EX_USAGE; + } + } + if (!newLen || !newWidth || !newHeight) return EX_USAGE; + if (optind == argc) return EX_USAGE; + + path = strdup(argv[optind]); + fileRead(newLen, newWidth, newHeight); + + if (setHeight) { + if (setHeight < header.glyph.height) { + errx(EX_CONFIG, "cannot decrease height"); + } + + uint32_t setSize = bytes(header.glyph.width) * setHeight; + uint8_t *setGlyphs = calloc(header.glyph.len, setSize); + for (uint32_t i = 0; i < header.glyph.len; ++i) { + memcpy(&setGlyphs[setSize * i], glyph(i), header.glyph.size); + } + free(glyphs); + glyphs = setGlyphs; + + header.glyph.height = setHeight; + header.glyph.size = setSize; + normal.modified = true; + } + + frameOpen(); + frameClear(); + + int error = tcgetattr(STDIN_FILENO, &saveTerm); + if (error) err(EX_IOERR, "tcgetattr"); + atexit(restoreTerm); + + struct termios term = saveTerm; + term.c_lflag &= ~(ICANON | ECHO); + error = tcsetattr(STDIN_FILENO, TCSADRAIN, &term); + if (error) err(EX_IOERR, "tcsetattr"); + + for (;;) { + draw(); + char ch; + ssize_t size = read(STDIN_FILENO, &ch, 1); + if (size < 0) err(EX_IOERR, "read"); + if (!size) return EX_SOFTWARE; + input(ch); + } +} diff --git a/bin/ptee.c b/bin/ptee.c new file mode 100644 index 00000000..6a9a16b4 --- /dev/null +++ b/bin/ptee.c @@ -0,0 +1,116 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <poll.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/ioctl.h> +#include <sys/wait.h> +#include <sysexits.h> +#include <termios.h> +#include <unistd.h> + +#if defined __FreeBSD__ +#include <libutil.h> +#elif defined __linux__ +#include <pty.h> +#else +#include <util.h> +#endif + +typedef unsigned char byte; + +static struct termios saveTerm; +static void restoreTerm(void) { + tcsetattr(STDIN_FILENO, TCSADRAIN, &saveTerm); +} + +int main(int argc, char *argv[]) { + if (argc < 2) return EX_USAGE; + if (isatty(STDOUT_FILENO)) errx(EX_USAGE, "stdout is not redirected"); + + int error = tcgetattr(STDIN_FILENO, &saveTerm); + if (error) err(EX_IOERR, "tcgetattr"); + atexit(restoreTerm); + + struct termios raw = saveTerm; + cfmakeraw(&raw); + error = tcsetattr(STDIN_FILENO, TCSADRAIN, &raw); + if (error) err(EX_IOERR, "tcsetattr"); + + struct winsize window; + error = ioctl(STDIN_FILENO, TIOCGWINSZ, &window); + if (error) err(EX_IOERR, "ioctl"); + + int pty; + pid_t pid = forkpty(&pty, NULL, NULL, &window); + if (pid < 0) err(EX_OSERR, "forkpty"); + + if (!pid) { + execvp(argv[1], &argv[1]); + err(EX_NOINPUT, "%s", argv[1]); + } + + bool stop = false; + + byte buf[4096]; + struct pollfd fds[2] = { + { .events = POLLIN, .fd = STDIN_FILENO }, + { .events = POLLIN, .fd = pty }, + }; + while (0 < poll(fds, 2, -1)) { + if (fds[0].revents & POLLIN) { + ssize_t rlen = read(STDIN_FILENO, buf, sizeof(buf)); + if (rlen < 0) err(EX_IOERR, "read"); + + if (rlen == 1 && buf[0] == CTRL('S')) { + stop ^= true; + continue; + } + + if (rlen == 1 && buf[0] == CTRL('Q')) { + char dump[] = "\x1B[10i"; + ssize_t wlen = write(STDOUT_FILENO, dump, sizeof(dump) - 1); + if (wlen < 0) err(EX_IOERR, "write"); + continue; + } + + ssize_t wlen = write(pty, buf, rlen); + if (wlen < 0) err(EX_IOERR, "write"); + } + + if (fds[1].revents & POLLIN) { + ssize_t rlen = read(pty, buf, sizeof(buf)); + if (rlen < 0) err(EX_IOERR, "read"); + + ssize_t wlen = write(STDIN_FILENO, buf, rlen); + if (wlen < 0) err(EX_IOERR, "write"); + + if (!stop) { + wlen = write(STDOUT_FILENO, buf, rlen); + if (wlen < 0) err(EX_IOERR, "write"); + } + } + + int status; + pid_t dead = waitpid(pid, &status, WNOHANG); + if (dead < 0) err(EX_OSERR, "waitpid"); + if (dead) return WIFEXITED(status) ? WEXITSTATUS(status) : EX_SOFTWARE; + } + err(EX_IOERR, "poll"); +} diff --git a/bin/relay.c b/bin/relay.c new file mode 100644 index 00000000..aa7913c9 --- /dev/null +++ b/bin/relay.c @@ -0,0 +1,218 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * Additional permission under GNU GPL version 3 section 7: + * + * If you modify this Program, or any covered work, by linking or + * combining it with LibreSSL (or a modified version of that library), + * containing parts covered by the terms of the OpenSSL License and the + * original SSLeay license, the licensors of this Program grant you + * additional permission to convey the resulting work. Corresponding + * Source for a non-source form of such a combination shall include the + * source code for the parts of LibreSSL used as well as that of the + * covered work. + */ + +#include <err.h> +#include <netdb.h> +#include <netinet/in.h> +#include <poll.h> +#include <signal.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/socket.h> +#include <sysexits.h> +#include <tls.h> +#include <unistd.h> + +#ifdef __FreeBSD__ +#include <sys/capsicum.h> +#endif + +static void clientWrite(struct tls *client, const char *ptr, size_t len) { + while (len) { + ssize_t ret = tls_write(client, ptr, len); + if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT) continue; + if (ret < 0) errx(EX_IOERR, "tls_write: %s", tls_error(client)); + ptr += ret; + len -= ret; + } +} + +static void clientFormat(struct tls *client, const char *format, ...) { + char buf[1024]; + va_list ap; + va_start(ap, format); + int len = vsnprintf(buf, sizeof(buf), format, ap); + va_end(ap); + if ((size_t)len > sizeof(buf) - 1) errx(EX_DATAERR, "message too large"); + clientWrite(client, buf, len); +} + +static void clientHandle(struct tls *client, const char *chan, char *line) { + char *prefix = NULL; + if (line[0] == ':') { + prefix = strsep(&line, " ") + 1; + if (!line) errx(EX_PROTOCOL, "unexpected eol"); + } + + char *command = strsep(&line, " "); + if (!strcmp(command, "001") || !strcmp(command, "INVITE")) { + clientFormat(client, "JOIN :%s\r\n", chan); + } else if (!strcmp(command, "PING")) { + clientFormat(client, "PONG %s\r\n", line); + } + if (strcmp(command, "PRIVMSG") && strcmp(command, "NOTICE")) return; + + if (!prefix) errx(EX_PROTOCOL, "message without prefix"); + char *nick = strsep(&prefix, "!"); + + if (!line) errx(EX_PROTOCOL, "message without destination"); + char *dest = strsep(&line, " "); + if (strcmp(dest, chan)) return; + + if (!line || line[0] != ':') errx(EX_PROTOCOL, "message without message"); + line = &line[1]; + + if (!strncmp(line, "\1ACTION ", 8)) { + line = &line[8]; + size_t len = strcspn(line, "\1"); + printf("* %c\u200C%s %.*s\n", nick[0], &nick[1], (int)len, line); + } else if (command[0] == 'N') { + printf("-%c\u200C%s- %s\n", nick[0], &nick[1], line); + } else { + printf("<%c\u200C%s> %s\n", nick[0], &nick[1], line); + } +} + +#ifdef __FreeBSD__ +static void limit(int fd, const cap_rights_t *rights) { + int error = cap_rights_limit(fd, rights); + if (error) err(EX_OSERR, "cap_rights_limit"); +} +#endif + +int main(int argc, char *argv[]) { + int error; + + if (argc < 5) return EX_USAGE; + const char *host = argv[1]; + const char *port = argv[2]; + const char *nick = argv[3]; + const char *chan = argv[4]; + + setlinebuf(stdout); + signal(SIGPIPE, SIG_IGN); + + struct tls_config *config = tls_config_new(); + if (!config) errx(EX_SOFTWARE, "tls_config_new"); + + error = tls_config_set_ciphers(config, "compat"); + if (error) { + errx(EX_SOFTWARE, "tls_config_set_ciphers: %s", tls_config_error(config)); + } + + struct tls *client = tls_client(); + if (!client) errx(EX_SOFTWARE, "tls_client"); + + error = tls_configure(client, config); + if (error) errx(EX_SOFTWARE, "tls_configure: %s", tls_error(client)); + tls_config_free(config); + + struct addrinfo *head; + struct addrinfo hints = { + .ai_family = AF_UNSPEC, + .ai_socktype = SOCK_STREAM, + .ai_protocol = IPPROTO_TCP, + }; + error = getaddrinfo(host, port, &hints, &head); + if (error) errx(EX_NOHOST, "getaddrinfo: %s", gai_strerror(error)); + + int sock = -1; + for (struct addrinfo *ai = head; ai; ai = ai->ai_next) { + sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); + if (sock < 0) err(EX_OSERR, "socket"); + + error = connect(sock, ai->ai_addr, ai->ai_addrlen); + if (!error) break; + + close(sock); + sock = -1; + } + if (sock < 0) err(EX_UNAVAILABLE, "connect"); + freeaddrinfo(head); + + error = tls_connect_socket(client, sock, host); + if (error) errx(EX_PROTOCOL, "tls_connect: %s", tls_error(client)); + +#ifdef __FreeBSD__ + error = cap_enter(); + if (error) err(EX_OSERR, "cap_enter"); + + cap_rights_t rights; + cap_rights_init(&rights, CAP_WRITE); + limit(STDOUT_FILENO, &rights); + limit(STDERR_FILENO, &rights); + + cap_rights_init(&rights, CAP_EVENT, CAP_READ); + limit(STDIN_FILENO, &rights); + + cap_rights_set(&rights, CAP_WRITE); + limit(sock, &rights); +#endif + + clientFormat(client, "NICK :%s\r\nUSER %s 0 * :%s\r\n", nick, nick, nick); + + char *input = NULL; + size_t cap = 0; + + char buf[4096]; + size_t len = 0; + + struct pollfd fds[2] = { + { .events = POLLIN, .fd = STDIN_FILENO }, + { .events = POLLIN, .fd = sock }, + }; + while (0 < poll(fds, 2, -1)) { + if (fds[0].revents) { + ssize_t len = getline(&input, &cap, stdin); + if (len < 0) err(EX_IOERR, "getline"); + input[len - 1] = '\0'; + clientFormat(client, "NOTICE %s :%s\r\n", chan, input); + } + if (!fds[1].revents) continue; + + ssize_t read = tls_read(client, &buf[len], sizeof(buf) - len); + if (read == TLS_WANT_POLLIN || read == TLS_WANT_POLLOUT) continue; + if (read < 0) errx(EX_IOERR, "tls_read: %s", tls_error(client)); + if (!read) return EX_UNAVAILABLE; + len += read; + + char *crlf; + char *line = buf; + for (;;) { + crlf = memmem(line, &buf[len] - line, "\r\n", 2); + if (!crlf) break; + crlf[0] = '\0'; + clientHandle(client, chan, line); + line = &crlf[2]; + } + len -= line - buf; + memmove(buf, line, len); + } + err(EX_IOERR, "poll"); +} diff --git a/bin/scheme.c b/bin/scheme.c new file mode 100644 index 00000000..ec5a2eec --- /dev/null +++ b/bin/scheme.c @@ -0,0 +1,256 @@ +/* Copyright (C) 2018, 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <math.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <unistd.h> + +#include "png.h" + +typedef unsigned uint; +typedef unsigned char byte; + +struct HSV { + double h, s, v; +}; + +struct RGB { + byte r, g, b; +}; + +static struct RGB convert(struct HSV o) { + double c = o.v * o.s; + double h = o.h / 60.0; + double x = c * (1.0 - fabs(fmod(h, 2.0) - 1.0)); + double m = o.v - c; + double r = m, g = m, b = m; + if (h <= 1.0) { r += c; g += x; } + else if (h <= 2.0) { r += x; g += c; } + else if (h <= 3.0) { g += c; b += x; } + else if (h <= 4.0) { g += x; b += c; } + else if (h <= 5.0) { r += x; b += c; } + else if (h <= 6.0) { r += c; b += x; } + return (struct RGB) { r * 255.0, g * 255.0, b * 255.0 }; +} + +static const struct HSV +R = { 0.0, 1.0, 1.0 }, +Y = { 60.0, 1.0, 1.0 }, +G = { 120.0, 1.0, 1.0 }, +C = { 180.0, 1.0, 1.0 }, +B = { 240.0, 1.0, 1.0 }, +M = { 300.0, 1.0, 1.0 }; + +static struct HSV x(struct HSV o, double hd, double sf, double vf) { + return (struct HSV) { + fmod(o.h + hd, 360.0), + fmin(o.s * sf, 1.0), + fmin(o.v * vf, 1.0), + }; +} + +enum { + Black, Red, Green, Yellow, Blue, Magenta, Cyan, White, + Dark = 0, + Light = 8, + Background = 16, + Foreground, + Bold, + Selection, + Cursor, + SchemeLen, +}; +static struct HSV scheme[SchemeLen]; +static struct HSV *dark = &scheme[Dark]; +static struct HSV *light = &scheme[Light]; + +static void generate(void) { + light[Black] = x(R, +45.0, 0.3, 0.3); + light[Red] = x(R, +10.0, 0.9, 0.8); + light[Green] = x(G, -55.0, 0.8, 0.6); + light[Yellow] = x(Y, -20.0, 0.8, 0.8); + light[Blue] = x(B, -55.0, 0.4, 0.5); + light[Magenta] = x(M, +45.0, 0.4, 0.6); + light[Cyan] = x(C, -60.0, 0.3, 0.6); + light[White] = x(R, +45.0, 0.3, 0.8); + + dark[Black] = x(light[Black], 0.0, 1.0, 0.3); + dark[White] = x(light[White], 0.0, 1.0, 0.7); + for (uint i = Red; i < White; ++i) { + dark[i] = x(light[i], 0.0, 1.0, 0.8); + } + + scheme[Background] = x(dark[Black], 0.0, 1.0, 0.9); + scheme[Foreground] = x(light[White], 0.0, 1.0, 0.9); + scheme[Bold] = x(light[White], 0.0, 1.0, 1.0); + scheme[Selection] = x(light[Red], +10.0, 1.0, 0.8); + scheme[Cursor] = x(dark[White], 0.0, 1.0, 0.8); +} + +static void swap(struct HSV *a, struct HSV *b) { + struct HSV c = *a; + *a = *b; + *b = c; +} + +static void invert(void) { + swap(&dark[Black], &light[White]); + swap(&dark[White], &light[Black]); +} + +typedef void OutputFn(const struct HSV *hsv, uint len); + +static void outputHSV(const struct HSV *hsv, uint len) { + for (uint i = 0; i < len; ++i) { + printf("%g,%g,%g\n", hsv[i].h, hsv[i].s, hsv[i].v); + } +} + +#define FORMAT_RGB "%02hhX%02hhX%02hhX" + +static void outputRGB(const struct HSV *hsv, uint len) { + for (uint i = 0; i < len; ++i) { + struct RGB rgb = convert(hsv[i]); + printf(FORMAT_RGB "\n", rgb.r, rgb.g, rgb.b); + } +} + +static void outputLinux(const struct HSV *hsv, uint len) { + for (uint i = 0; i < len; ++i) { + struct RGB rgb = convert(hsv[i]); + printf("\x1B]P%X" FORMAT_RGB, i, rgb.r, rgb.g, rgb.b); + } +} + +static const char *Enum[SchemeLen] = { + "DarkBlack", "DarkRed", "DarkGreen", "DarkYellow", + "DarkBlue", "DarkMagenta", "DarkCyan", "DarkWhite", + "LightBlack", "LightRed", "LightGreen", "LightYellow", + "LightBlue", "LightMagenta", "LightCyan", "LightWhite", + "Background", "Foreground", "Bold", "Selection", "Cursor", +}; + +static void outputEnum(const struct HSV *hsv, uint len) { + printf("enum {\n"); + for (uint i = 0; i < len; ++i) { + struct RGB rgb = convert(hsv[i]); + printf("\t%s = 0x" FORMAT_RGB ",\n", Enum[i], rgb.r, rgb.g, rgb.b); + } + printf("};\n"); +} + +static const char *Mintty[SchemeLen] = { + "Black", "Red", "Green", "Yellow", + "Blue", "Magenta", "Cyan", "White", + "BoldBlack", "BoldRed", "BoldGreen", "BoldYellow", + "BoldBlue", "BoldMagenta", "BoldCyan", "BoldWhite", + [Background] = "BackgroundColour", + [Foreground] = "ForegroundColour", + [Cursor] = "CursorColour", +}; + +static void outputMintty(const struct HSV *hsv, uint len) { + for (uint i = 0; i < len; ++i) { + if (!Mintty[i]) continue; + struct RGB rgb = convert(hsv[i]); + printf("%s=%hhu,%hhu,%hhu\n", Mintty[i], rgb.r, rgb.g, rgb.b); + } +} + +static void outputCSS(const struct HSV *hsv, uint len) { + printf(":root {\n"); + for (uint i = 0; i < len; ++i) { + struct RGB rgb = convert(hsv[i]); + printf("\t--ansi%u: #" FORMAT_RGB ";\n", i, rgb.r, rgb.g, rgb.b); + } + printf("}\n"); + for (uint i = 0; i < len; ++i) { + printf( + ".fg%u { color: var(--ansi%u); }\n" + ".bg%u { background-color: var(--ansi%u); }\n", + i, i, i, i + ); + } +} + +enum { + SwatchWidth = 64, + SwatchHeight = 64, + SwatchCols = 8, +}; + +static void outputPNG(const struct HSV *hsv, uint len) { + uint rows = (len + SwatchCols - 1) / SwatchCols; + uint width = SwatchWidth * SwatchCols; + uint height = SwatchHeight * rows; + pngHead(stdout, width, height, 8, PNGIndexed); + + struct RGB pal[len]; + for (uint i = 0; i < len; ++i) { + pal[i] = convert(hsv[i]); + } + pngPalette(stdout, (byte *)pal, sizeof(pal)); + + byte data[height][1 + width]; + memset(data, 0, sizeof(data)); + for (uint y = 0; y < height; ++y) { + data[y][0] = (y % SwatchHeight ? PNGUp : PNGSub); + } + for (uint i = 0; i < len; ++i) { + uint y = SwatchHeight * (i / SwatchCols); + uint x = SwatchWidth * (i % SwatchCols); + data[y][1 + x] = (x ? 1 : i); + } + pngData(stdout, (byte *)data, sizeof(data)); + pngTail(stdout); +} + +int main(int argc, char *argv[]) { + generate(); + + OutputFn *output = outputRGB; + const struct HSV *hsv = scheme; + uint len = 16; + + int opt; + while (0 < (opt = getopt(argc, argv, "acghilmp:stx"))) { + switch (opt) { + break; case 'a': len = 16; + break; case 'c': output = outputEnum; + break; case 'g': output = outputPNG; + break; case 'h': output = outputHSV; + break; case 'i': invert(); + break; case 'l': output = outputLinux; + break; case 'm': output = outputMintty; + break; case 'p': { + uint p = strtoul(optarg, NULL, 0); + if (p >= SchemeLen) return EX_USAGE; + hsv = &scheme[p]; + len = 1; + } + break; case 's': output = outputCSS; + break; case 't': len = SchemeLen; + break; case 'x': output = outputRGB; + break; default: return EX_USAGE; + } + } + + output(hsv, len); +} diff --git a/bin/shotty.c b/bin/shotty.c new file mode 100644 index 00000000..83b00313 --- /dev/null +++ b/bin/shotty.c @@ -0,0 +1,648 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <assert.h> +#include <err.h> +#include <locale.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> +#include <sysexits.h> +#include <unistd.h> +#include <wchar.h> + +#define BIT(x) x##Bit, x = 1 << x##Bit, x##Bit_ = x##Bit + +typedef unsigned uint; + +enum { + NUL, SOH, STX, ETX, EOT, ENQ, ACK, BEL, + BS, HT, NL, VT, NP, CR, SO, SI, + DLE, DC1, DC2, DC3, DC4, NAK, SYN, ETB, + CAN, EM, SUB, ESC, FS, GS, RS, US, + DEL = 0x7F, +}; + +enum Attr { + BIT(Bold), + BIT(Dim), + BIT(Italic), + BIT(Underline), + BIT(Blink), + BIT(Reverse), +}; + +struct Style { + enum Attr attr; + int bg, fg; +}; + +struct Cell { + struct Style style; + wchar_t ch; +}; + +static uint rows = 24, cols = 80; +static struct Cell *cells; + +static struct Cell *cell(uint y, uint x) { + assert(y <= rows); + assert(x <= cols); + assert(y * cols + x <= rows * cols); + return &cells[y * cols + x]; +} + +static uint y, x; +static struct Style style = { .bg = -1, .fg = -1 }; + +static struct { + uint y, x; +} save; + +enum { ParamCap = 16 }; +static struct { + uint s[ParamCap]; + uint n, i; +} param; + +static uint p(uint i, uint z) { + return (i < param.n ? param.s[i] : z); +} + +static uint min(uint a, uint b) { + return (a < b ? a : b); +} + +#define _ch ch __attribute__((unused)) +typedef void Action(wchar_t ch); + +static void nop(wchar_t _ch) { +} + +static void csi(wchar_t _ch) { + memset(¶m, 0, sizeof(param)); +} + +static void csiSep(wchar_t _ch) { + if (param.n == ParamCap) return; + if (!param.n) param.n++; + param.n++; + param.i++; +} + +static void csiDigit(wchar_t ch) { + param.s[param.i] *= 10; + param.s[param.i] += ch - L'0'; + if (!param.n) param.n++; +} + +static void bs(wchar_t _ch) { if (x) x--; } +static void ht(wchar_t _ch) { x = min(x - x % 8 + 8, cols - 1); } +static void cr(wchar_t _ch) { x = 0; } +static void cuu(wchar_t _ch) { y -= min(p(0, 1), y); } +static void cud(wchar_t _ch) { y = min(y + p(0, 1), rows - 1); } +static void cuf(wchar_t _ch) { x = min(x + p(0, 1), cols - 1); } +static void cub(wchar_t _ch) { x -= min(p(0, 1), x); } +static void cnl(wchar_t _ch) { x = 0; cud(0); } +static void cpl(wchar_t _ch) { x = 0; cuu(0); } +static void cha(wchar_t _ch) { x = min(p(0, 1) - 1, cols - 1); } +static void vpa(wchar_t _ch) { y = min(p(0, 1) - 1, rows - 1); } +static void cup(wchar_t _ch) { + y = min(p(0, 1) - 1, rows - 1); + x = min(p(1, 1) - 1, cols - 1); +} +static void decsc(wchar_t _ch) { + save.y = y; + save.x = x; +} +static void decrc(wchar_t _ch) { + y = save.y; + x = save.x; +} + +static void move(struct Cell *dst, struct Cell *src, size_t len) { + memmove(dst, src, sizeof(*dst) * len); +} + +static void erase(struct Cell *at, struct Cell *to) { + for (; at < to; ++at) { + at->style = style; + at->ch = L' '; + } +} + +static void ed(wchar_t _ch) { + erase( + (p(0, 0) == 0 ? cell(y, x) : cell(0, 0)), + (p(0, 0) == 1 ? cell(y, x) : cell(rows - 1, cols)) + ); +} +static void el(wchar_t _ch) { + erase( + (p(0, 0) == 0 ? cell(y, x) : cell(y, 0)), + (p(0, 0) == 1 ? cell(y, x) : cell(y, cols)) + ); +} +static void ech(wchar_t _ch) { + erase(cell(y, x), cell(y, min(x + p(0, 1), cols))); +} + +static void dch(wchar_t _ch) { + uint n = min(p(0, 1), cols - x); + move(cell(y, x), cell(y, x + n), cols - x - n); + erase(cell(y, cols - n), cell(y, cols)); +} +static void ich(wchar_t _ch) { + uint n = min(p(0, 1), cols - x); + move(cell(y, x + n), cell(y, x), cols - x - n); + erase(cell(y, x), cell(y, x + n)); +} + +static struct { + uint top, bot; +} scroll; + +static void scrollUp(uint top, uint n) { + n = min(n, scroll.bot - top); + move(cell(top, 0), cell(top + n, 0), cols * (scroll.bot - top - n)); + erase(cell(scroll.bot - n, 0), cell(scroll.bot, 0)); +} + +static void scrollDown(uint top, uint n) { + n = min(n, scroll.bot - top); + move(cell(top + n, 0), cell(top, 0), cols * (scroll.bot - top - n)); + erase(cell(top, 0), cell(top + n, 0)); +} + +static void decstbm(wchar_t _ch) { + scroll.bot = min(p(1, rows), rows); + scroll.top = min(p(0, 1) - 1, scroll.bot); +} + +static void su(wchar_t _ch) { scrollUp(scroll.top, p(0, 1)); } +static void sd(wchar_t _ch) { scrollDown(scroll.top, p(0, 1)); } +static void dl(wchar_t _ch) { scrollUp(min(y, scroll.bot), p(0, 1)); } +static void il(wchar_t _ch) { scrollDown(min(y, scroll.bot), p(0, 1)); } + +static void nl(wchar_t _ch) { + if (y + 1 == scroll.bot) { + scrollUp(scroll.top, 1); + } else { + y = min(y + 1, rows - 1); + } +} +static void ri(wchar_t _ch) { + if (y == scroll.top) { + scrollDown(scroll.top, 1); + } else { + if (y) y--; + } +} + +static enum Mode { + BIT(Insert), + BIT(Wrap), + BIT(Cursor), +} mode = Wrap | Cursor; + +static enum Mode paramMode(void) { + enum Mode mode = 0; + for (uint i = 0; i < param.n; ++i) { + switch (param.s[i]) { + break; case 4: mode |= Insert; + break; default: warnx("unhandled SM/RM %u", param.s[i]); + } + } + return mode; +} + +static enum Mode paramDECMode(void) { + enum Mode mode = 0; + for (uint i = 0; i < param.n; ++i) { + switch (param.s[i]) { + break; case 1: // DECCKM + break; case 7: mode |= Wrap; + break; case 12: // "Start Blinking Cursor" + break; case 25: mode |= Cursor; + break; default: { + if (param.s[i] < 1000) { + warnx("unhandled DECSET/DECRST %u", param.s[i]); + } + } + } + } + return mode; +} + +static void sm(wchar_t _ch) { mode |= paramMode(); } +static void rm(wchar_t _ch) { mode &= ~paramMode(); } +static void decset(wchar_t _ch) { mode |= paramDECMode(); } +static void decrst(wchar_t _ch) { mode &= ~paramDECMode(); } + +enum { + Reset, + SetBold, + SetDim, + SetItalic, + SetUnderline, + SetBlink, + SetReverse = 7, + + UnsetBoldDim = 22, + UnsetItalic, + UnsetUnderline, + UnsetBlink, + UnsetReverse = 27, + + SetFg0 = 30, + SetFg7 = 37, + SetFg, + ResetFg, + SetBg0 = 40, + SetBg7 = 47, + SetBg, + ResetBg, + + SetFg8 = 90, + SetFgF = 97, + SetBg8 = 100, + SetBgF = 107, + + Color256 = 5, +}; + +static void sgr(wchar_t _ch) { + uint n = param.i + 1; + for (uint i = 0; i < n; ++i) { + switch (param.s[i]) { + break; case Reset: style = (struct Style) { .bg = -1, .fg = -1 }; + + break; case SetBold: style.attr |= Bold; style.attr &= ~Dim; + break; case SetDim: style.attr |= Dim; style.attr &= ~Bold; + break; case SetItalic: style.attr |= Italic; + break; case SetUnderline: style.attr |= Underline; + break; case SetBlink: style.attr |= Blink; + break; case SetReverse: style.attr |= Reverse; + + break; case UnsetBoldDim: style.attr &= ~(Bold | Dim); + break; case UnsetItalic: style.attr &= ~Italic; + break; case UnsetUnderline: style.attr &= ~Underline; + break; case UnsetBlink: style.attr &= ~Blink; + break; case UnsetReverse: style.attr &= ~Reverse; + + break; case SetFg: { + if (++i < n && param.s[i] == Color256) { + if (++i < n) style.fg = param.s[i]; + } + } + break; case SetBg: { + if (++i < n && param.s[i] == Color256) { + if (++i < n) style.bg = param.s[i]; + } + } + + break; case ResetFg: style.fg = -1; + break; case ResetBg: style.bg = -1; + + break; default: { + uint p = param.s[i]; + if (p >= SetFg0 && p <= SetFg7) { + style.fg = p - SetFg0; + } else if (p >= SetBg0 && p <= SetBg7) { + style.bg = p - SetBg0; + } else if (p >= SetFg8 && p <= SetFgF) { + style.fg = 8 + p - SetFg8; + } else if (p >= SetBg8 && p <= SetBgF) { + style.bg = 8 + p - SetBg8; + } else { + warnx("unhandled SGR %u", p); + } + } + } + } +} + +static enum { + USASCII, + DECSpecial, +} charset; + +static void usascii(wchar_t _ch) { charset = USASCII; } +static void decSpecial(wchar_t _ch) { charset = DECSpecial; } + +static const wchar_t AltCharset[128] = { + ['`'] = L'â—†', ['a'] = L'â–’', ['f'] = L'°', ['g'] = L'±', ['i'] = L'â‹', + ['j'] = L'┘', ['k'] = L'â”', ['l'] = L'┌', ['m'] = L'â””', ['n'] = L'┼', + ['o'] = L'⎺', ['p'] = L'⎻', ['q'] = L'─', ['r'] = L'⎼', ['s'] = L'⎽', + ['t'] = L'├', ['u'] = L'┤', ['v'] = L'â”´', ['w'] = L'┬', ['x'] = L'│', + ['y'] = L'≤', ['z'] = L'≥', ['{'] = L'Ï€', ['|'] = L'≠', ['}'] = L'£', + ['~'] = L'·', +}; + +static void add(wchar_t ch) { + if (charset == DECSpecial && ch < 128 && AltCharset[ch]) { + ch = AltCharset[ch]; + } + + int width = wcwidth(ch); + if (width < 0) { + warnx("unhandled \\u%02X", ch); + return; + } + + if (mode & Insert) { + uint n = min(width, cols - x); + move(cell(y, x + n), cell(y, x), cols - x - n); + } + if (mode & Wrap && x + width > cols) { + cr(0); + nl(0); + } + + cell(y, x)->style = style; + cell(y, x)->ch = ch; + for (int i = 1; i < width && x + i < cols; ++i) { + cell(y, x + i)->style = style; + cell(y, x + i)->ch = L'\0'; + } + x = min(x + width, (mode & Wrap ? cols : cols - 1)); +} + +static void html(void); +static void mc(wchar_t _ch) { + if (p(0, 0) == 10) { + html(); + } else { + warnx("unhandled CSI %u MC", p(0, 0)); + } +} + +static enum { + Data, + Esc, + G0, + CSI, + CSILt, + CSIEq, + CSIGt, + CSIQm, + CSIInter, + OSC, + OSCEsc, +} state; + +static void escDefault(wchar_t ch) { + warnx("unhandled ESC %lc", ch); +} + +static void g0Default(wchar_t ch) { + warnx("unhandled G0 %lc", ch); + charset = USASCII; +} + +static void csiInter(wchar_t ch) { + switch (state) { + break; case CSI: warnx("unhandled CSI %lc ...", ch); + break; case CSILt: warnx("unhandled CSI < %lc ...", ch); + break; case CSIEq: warnx("unhandled CSI = %lc ...", ch); + break; case CSIGt: warnx("unhandled CSI > %lc ...", ch); + break; case CSIQm: warnx("unhandled CSI ? %lc ...", ch); + break; default: abort(); + } +} + +static void csiFinal(wchar_t ch) { + switch (state) { + break; case CSI: warnx("unhandled CSI %lc", ch); + break; case CSILt: warnx("unhandled CSI < %lc", ch); + break; case CSIEq: warnx("unhandled CSI = %lc", ch); + break; case CSIGt: warnx("unhandled CSI > %lc", ch); + break; case CSIQm: warnx("unhandled CSI ? %lc", ch); + break; case CSIInter: warnx("unhandled CSI ... %lc", ch); + break; default: abort(); + } +} + +#define S(s) break; case s: switch (ch) +#define A(c, a, s) break; case c: a(ch); state = s +#define D(a, s) break; default: a(ch); state = s +static void update(wchar_t ch) { + switch (state) { + default: abort(); + + S(Data) { + A(BEL, nop, Data); + A(BS, bs, Data); + A(HT, ht, Data); + A(NL, nl, Data); + A(CR, cr, Data); + A(ESC, nop, Esc); + D(add, Data); + } + + S(Esc) { + A('(', nop, G0); + A('7', decsc, Data); + A('8', decrc, Data); + A('=', nop, Data); + A('>', nop, Data); + A('M', ri, Data); + A('[', csi, CSI); + A(']', nop, OSC); + D(escDefault, Data); + } + S(G0) { + A('0', decSpecial, Data); + A('B', usascii, Data); + D(g0Default, Data); + } + + S(CSI) { + A(' ' ... '/', csiInter, CSIInter); + A('0' ... '9', csiDigit, CSI); + A(':', nop, CSI); + A(';', csiSep, CSI); + A('<', nop, CSILt); + A('=', nop, CSIEq); + A('>', nop, CSIGt); + A('?', nop, CSIQm); + A('@', ich, Data); + A('A', cuu, Data); + A('B', cud, Data); + A('C', cuf, Data); + A('D', cub, Data); + A('E', cnl, Data); + A('F', cpl, Data); + A('G', cha, Data); + A('H', cup, Data); + A('J', ed, Data); + A('K', el, Data); + A('L', il, Data); + A('M', dl, Data); + A('P', dch, Data); + A('S', su, Data); + A('T', sd, Data); + A('X', ech, Data); + A('d', vpa, Data); + A('h', sm, Data); + A('i', mc, Data); + A('l', rm, Data); + A('m', sgr, Data); + A('r', decstbm, Data); + A('t', nop, Data); + D(csiFinal, Data); + } + + S(CSILt ... CSIGt) { + A(' ' ... '/', csiInter, CSIInter); + A('0' ... '9', csiDigit, state); + A(':', nop, state); + A(';', csiSep, state); + D(csiFinal, Data); + } + + S(CSIQm) { + A(' ' ... '/', csiInter, CSIInter); + A('0' ... '9', csiDigit, CSIQm); + A(':', nop, CSIQm); + A(';', csiSep, CSIQm); + A('h', decset, Data); + A('l', decrst, Data); + D(csiFinal, Data); + } + + S(CSIInter) { + D(csiFinal, Data); + } + + S(OSC) { + A(BEL, nop, Data); + A(ESC, nop, OSCEsc); + D(nop, OSC); + } + S(OSCEsc) { + A('\\', nop, Data); + D(nop, OSC); + } + } +} + +static bool bright; +static int defaultBg = 0; +static int defaultFg = 7; + +static void span(const struct Style *prev, const struct Cell *cell) { + struct Style style = cell->style; + if (!prev || memcmp(prev, &style, sizeof(*prev))) { + if (prev) printf("</span>"); + if (style.bg < 0) style.bg = defaultBg; + if (style.fg < 0) style.fg = defaultFg; + if (bright && style.attr & Bold) { + if (style.fg < 8) style.fg += 8; + style.attr ^= Bold; + } + printf( + "<span style=\"%s%s%s\" class=\"bg%u fg%u\">", + (style.attr & Bold ? "font-weight:bold;" : ""), + (style.attr & Italic ? "font-style:italic;" : ""), + (style.attr & Underline ? "text-decoration:underline;" : ""), + (style.attr & Reverse ? style.fg : style.bg), + (style.attr & Reverse ? style.bg : style.fg) + ); + } + switch (cell->ch) { + break; case '&': printf("&"); + break; case '<': printf("<"); + break; case '>': printf(">"); + break; default: printf("%lc", (wint_t)cell->ch); + } +} + +static bool mediaCopy; +static void html(void) { + mediaCopy = true; + if (mode & Cursor) cell(y, x)->style.attr ^= Reverse; + printf( + "<pre style=\"width: %uch;\" class=\"bg%u fg%u\">", + cols, defaultBg, defaultFg + ); + for (uint y = 0; y < rows; ++y) { + for (uint x = 0; x < cols; ++x) { + if (!cell(y, x)->ch) continue; + span(x ? &cell(y, x - 1)->style : NULL, cell(y, x)); + } + printf("</span>\n"); + } + printf("</pre>\n"); + if (mode & Cursor) cell(y, x)->style.attr ^= Reverse; +} + +int main(int argc, char *argv[]) { + setlocale(LC_CTYPE, ""); + + bool debug = false; + bool size = false; + bool hide = false; + + int opt; + while (0 < (opt = getopt(argc, argv, "Bb:df:h:nsw:"))) { + switch (opt) { + break; case 'B': bright = true; + break; case 'b': defaultBg = strtol(optarg, NULL, 0); + break; case 'd': debug = true; + break; case 'f': defaultFg = strtol(optarg, NULL, 0); + break; case 'h': rows = strtoul(optarg, NULL, 0); + break; case 'n': hide = true; + break; case 's': size = true; + break; case 'w': cols = strtoul(optarg, NULL, 0); + break; default: return EX_USAGE; + } + } + + FILE *file = stdin; + if (optind < argc) { + file = fopen(argv[optind], "r"); + if (!file) err(EX_NOINPUT, "%s", argv[optind]); + } + + if (size) { + struct winsize window; + int error = ioctl(STDERR_FILENO, TIOCGWINSZ, &window); + if (error) err(EX_IOERR, "ioctl"); + rows = window.ws_row; + cols = window.ws_col; + } + scroll.bot = rows; + + cells = calloc(rows * cols, sizeof(*cells)); + if (!cells) err(EX_OSERR, "calloc"); + erase(cell(0, 0), cell(rows - 1, cols)); + + wint_t ch; + while (WEOF != (ch = getwc(file))) { + uint prev = state; + update(ch); + if (debug && state != prev && state == Data) html(); + } + if (ferror(file)) err(EX_IOERR, "getwc"); + + if (!mediaCopy) { + if (hide) mode &= ~Cursor; + html(); + } +} diff --git a/bin/title.c b/bin/title.c new file mode 100644 index 00000000..82f89d95 --- /dev/null +++ b/bin/title.c @@ -0,0 +1,211 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <curl/curl.h> +#include <err.h> +#include <locale.h> +#include <regex.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <unistd.h> +#include <wchar.h> + +static regex_t regex(const char *pattern, int flags) { + regex_t regex; + int error = regcomp(®ex, pattern, REG_EXTENDED | flags); + if (!error) return regex; + + char buf[256]; + regerror(error, ®ex, buf, sizeof(buf)); + errx(EX_SOFTWARE, "regcomp: %s: %s", buf, pattern); +} + +static const struct Entity { + wchar_t ch; + const char *name; +} Entities[] = { + { L'"', """ }, + { L'&', "&" }, + { L'<', "<" }, + { L'>', ">" }, + { L'â¤', " " }, +}; + +static wchar_t entity(const char *name) { + for (size_t i = 0; i < sizeof(Entities) / sizeof(Entities[0]); ++i) { + struct Entity entity = Entities[i]; + if (strncmp(name, entity.name, strlen(entity.name))) continue; + return entity.ch; + } + if (!strncmp(name, "&#x", 3)) return strtoul(&name[3], NULL, 16); + if (!strncmp(name, "&#", 2)) return strtoul(&name[2], NULL, 10); + return 0; +} + +static const char EntityPattern[] = { + "[[:space:]]+|&([[:alpha:]]+|#([[:digit:]]+|x[[:xdigit:]]+));" +}; +static regex_t EntityRegex; + +static void showTitle(const char *title) { + regmatch_t match = {0}; + for (; *title; title += match.rm_eo) { + if (regexec(&EntityRegex, title, 1, &match, 0)) break; + if (title[match.rm_so] != '&') { + printf("%.*s ", (int)match.rm_so, title); + continue; + } + wchar_t ch = entity(&title[match.rm_so]); + if (ch) { + printf("%.*s%lc", (int)match.rm_so, title, (wint_t)ch); + } else { + printf("%.*s", (int)match.rm_eo, title); + } + } + printf("%s\n", title); +} + +static CURL *curl; +static bool title; +static struct { + char buf[64 * 1024]; + size_t len; +} body; + +// HE COMES +static const char TitlePattern[] = "<title>([^<]*)</title>"; +static regex_t TitleRegex; + +static size_t handleBody(char *buf, size_t size, size_t nitems, void *user) { + (void)user; + size_t len = size * nitems; + size_t cap = sizeof(body.buf) - body.len - 1; + size_t new = (len < cap ? len : cap); + if (title || !new) return len; + + memcpy(&body.buf[body.len], buf, new); + body.len += new; + body.buf[body.len] = '\0'; + + regmatch_t match[2]; + if (regexec(&TitleRegex, body.buf, 2, match, 0)) return len; + body.buf[match[1].rm_eo] = '\0'; + showTitle(&body.buf[match[1].rm_so]); + title = true; + + return len; +} + +static CURLcode fetchTitle(const char *url) { + CURLcode code = curl_easy_setopt(curl, CURLOPT_URL, url); + if (code) return code; + + curl_easy_setopt(curl, CURLOPT_NOBODY, 1L); + code = curl_easy_perform(curl); + if (code) return code; + + char *type; + code = curl_easy_getinfo(curl, CURLINFO_CONTENT_TYPE, &type); + if (code) return code; + if (!type || strncmp(type, "text/html", 9)) return CURLE_OK; + + char *dest; + curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &dest); + dest = strdup(dest); + if (!dest) err(EX_OSERR, "strdup"); + + code = curl_easy_setopt(curl, CURLOPT_URL, dest); + if (code) return code; + free(dest); + + body.len = 0; + title = false; + curl_easy_setopt(curl, CURLOPT_HTTPGET, 1L); + code = curl_easy_perform(curl); + return code; +} + +int main(int argc, char *argv[]) { + EntityRegex = regex(EntityPattern, 0); + TitleRegex = regex(TitlePattern, REG_ICASE); + + setlocale(LC_CTYPE, ""); + setlinebuf(stdout); + + CURLcode code = curl_global_init(CURL_GLOBAL_ALL); + if (code) errx(EX_OSERR, "curl_global_init: %s", curl_easy_strerror(code)); + + curl = curl_easy_init(); + if (!curl) errx(EX_SOFTWARE, "curl_easy_init"); + + static char error[CURL_ERROR_SIZE]; + curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, error); + + curl_easy_setopt(curl, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS); + curl_easy_setopt( + curl, CURLOPT_USERAGENT, + "curl/7.54.0 facebookexternalhit/1.1 Twitterbot/1.0" + ); + curl_easy_setopt(curl, CURLOPT_ACCEPT_ENCODING, ""); + curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L); + curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 3L); + curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1L); + + curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, handleBody); + + bool exclude = false; + regex_t excludeRegex; + + int opt; + while (0 < (opt = getopt(argc, argv, "x:v"))) { + switch (opt) { + break; case 'x': { + exclude = true; + excludeRegex = regex(optarg, REG_NOSUB); + } + break; case 'v': curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); + break; default: return EX_USAGE; + } + } + + if (optind < argc) { + code = fetchTitle(argv[optind]); + if (!code) return EX_OK; + errx(EX_DATAERR, "curl_easy_perform: %s", error); + } + + char *buf = NULL; + size_t cap = 0; + + regex_t urlRegex = regex("https?://([^[:space:]>\"()]|[(][^)]*[)])+", 0); + while (0 < getline(&buf, &cap, stdin)) { + regmatch_t match = {0}; + for (char *ptr = buf; *ptr; ptr += match.rm_eo) { + if (regexec(&urlRegex, ptr, 1, &match, 0)) break; + ptr[match.rm_eo] = '\0'; + const char *url = &ptr[match.rm_so]; + if (!exclude || regexec(&excludeRegex, url, 0, NULL, 0)) { + code = fetchTitle(url); + if (code) warnx("curl_easy_perform: %s", error); + } + ptr[match.rm_eo] = ' '; + } + } + if (ferror(stdin)) err(EX_IOERR, "getline"); +} diff --git a/bin/ttpre.c b/bin/ttpre.c new file mode 100644 index 00000000..4917be37 --- /dev/null +++ b/bin/ttpre.c @@ -0,0 +1,66 @@ +/* Copyright (C) 2018 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <locale.h> +#include <stdio.h> +#include <stdlib.h> +#include <wchar.h> + +static void put(wchar_t ch) { + switch (ch) { + break; case L'&': printf("&"); + break; case L'<': printf("<"); + break; case L'>': printf(">"); + break; default: printf("%lc", (wint_t)ch); + } +} + +static void tag(const char *open) { + static const char *close = NULL; + if (close == open) return; + if (close) printf("</%s>", close); + if (open) printf("<%s>", open); + close = open; +} + +static void push(wchar_t ch) { + static wchar_t q[3]; + if (q[1] == L'\b' && q[0] == L'_') { + tag("i"); + put(q[2]); + q[0] = q[1] = q[2] = 0; + } else if (q[1] == L'\b' && q[0] == q[2]) { + tag("b"); + put(q[2]); + q[0] = q[1] = q[2] = 0; + } else if (q[0]) { + tag(NULL); + put(q[0]); + } + q[0] = q[1]; + q[1] = q[2]; + q[2] = ch; +} + +int main(void) { + setlocale(LC_CTYPE, ""); + printf("<pre>"); + wint_t ch; + while (WEOF != (ch = getwchar())) push(ch); + push(0); push(0); push(0); + printf("</pre>\n"); + return EXIT_SUCCESS; +} diff --git a/bin/up.sh b/bin/up.sh new file mode 100644 index 00000000..e65d4522 --- /dev/null +++ b/bin/up.sh @@ -0,0 +1,76 @@ +#!/bin/sh +set -eu + +readonly Host='temp.causal.agency' + +upload() { + local src ext ts rand url + src=$1 + ext=${src##*.} + ts=$(date +'%s') + rand=$(openssl rand -hex 4) + url=$(printf '%s/%x%s.%s' "$Host" "$ts" "$rand" "$ext") + scp -q "$src" "${Host}:/usr/local/www/${url}" + echo "https://${url}" +} + +temp() { + temp=$(mktemp -d) + trap "rm -r '$temp'" EXIT +} + +uploadText() { + temp + cat > "${temp}/input.txt" + upload "${temp}/input.txt" +} + +uploadCommand() { + temp + echo "$ $*" > "${temp}/exec.txt" + "$@" >> "${temp}/exec.txt" 2>&1 || true + upload "${temp}/exec.txt" +} + +uploadHi() { + temp + hi -f html -o document,anchor,tab=4 "$@" > "${temp}/hi.html" + upload "${temp}/hi.html" +} + +uploadScreen() { + temp + screencapture -i "$@" "${temp}/capture.png" + pngo "${temp}/capture.png" || true + upload "${temp}/capture.png" +} + +uploadTerminal() { + temp + cat > "${temp}/term.html" <<-EOF + <!DOCTYPE html> + <title>${1}</title> + <style> + $(scheme -s) + </style> + EOF + ptee "$@" | shotty -Bs >> "${temp}/term.html" + upload "${temp}/term.html" +} + +while getopts 'chst' opt; do + case "$opt" in + (c) fn=uploadCommand;; + (h) fn=uploadHi;; + (s) fn=uploadScreen;; + (t) fn=uploadTerminal;; + (?) exit 1;; + esac +done +shift $((OPTIND - 1)) +[ $# -eq 0 ] && : ${fn:=uploadText} +: ${fn:=upload} + +url=$($fn "$@") +printf '%s' "$url" | pbcopy || true +echo "$url" diff --git a/bin/when.y b/bin/when.y new file mode 100644 index 00000000..5367b3b3 --- /dev/null +++ b/bin/when.y @@ -0,0 +1,250 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +%{ + +#include <ctype.h> +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <strings.h> +#include <sysexits.h> +#include <time.h> + +static void yyerror(const char *str); +static int yylex(void); + +#define YYSTYPE struct tm + +static const char *Days[7] = { + "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", +}; + +static const char *Months[12] = { + "Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", +}; + +static const struct tm Week = { .tm_mday = 7 }; + +static struct tm normalize(struct tm date) { + time_t time = timegm(&date); + struct tm *norm = gmtime(&time); + if (!norm) err(EX_OSERR, "gmtime"); + return *norm; +} + +static struct tm today(void) { + time_t now = time(NULL); + struct tm *local = localtime(&now); + if (!local) err(EX_OSERR, "localtime"); + struct tm date = { + .tm_year = local->tm_year, + .tm_mon = local->tm_mon, + .tm_mday = local->tm_mday, + }; + return normalize(date); +} + +static struct tm monthDay(int month, int day) { + struct tm date = today(); + date.tm_mon = month; + date.tm_mday = day; + return normalize(date); +} + +static struct tm monthDayYear(int month, int day, int year) { + struct tm date = today(); + date.tm_mon = month; + date.tm_mday = day; + date.tm_year = year - 1900; + return normalize(date); +} + +static struct tm weekDay(int day) { + struct tm date = today(); + date.tm_mday += day - date.tm_wday; + return normalize(date); +} + +static struct tm scalarAdd(struct tm a, struct tm b) { + a.tm_mday += b.tm_mday; + a.tm_mon += b.tm_mon; + a.tm_year += b.tm_year; + return a; +} + +static struct tm scalarSub(struct tm a, struct tm b) { + a.tm_mday -= b.tm_mday; + a.tm_mon -= b.tm_mon; + a.tm_year -= b.tm_year; + return a; +} + +static struct tm dateAdd(struct tm date, struct tm scalar) { + return normalize(scalarAdd(date, scalar)); +} + +static struct tm dateSub(struct tm date, struct tm scalar) { + return normalize(scalarSub(date, scalar)); +} + +static struct tm dateDiff(struct tm a, struct tm b) { + struct tm diff = { + .tm_year = a.tm_year - b.tm_year, + .tm_mon = a.tm_mon - b.tm_mon, + .tm_mday = a.tm_mday - b.tm_mday, + }; + if (a.tm_mon < b.tm_mon) { + diff.tm_year--; + diff.tm_mon += 12; + } + if (a.tm_mday < b.tm_mday) { + diff.tm_mon--; + diff.tm_mday = 0; + while (dateAdd(b, diff).tm_mday != a.tm_mday) diff.tm_mday++; + } + time_t atime = timegm(&a), btime = timegm(&b); + diff.tm_yday = (atime - btime) / 24 / 60 / 60; + return diff; +} + +static void printDate(struct tm date) { + printf( + "%s %s %d %d\n", + Days[date.tm_wday], Months[date.tm_mon], + date.tm_mday, 1900 + date.tm_year + ); +} + +static void printScalar(struct tm scalar) { + if (scalar.tm_year) printf("%dy ", scalar.tm_year); + if (scalar.tm_mon) printf("%dm ", scalar.tm_mon); + if (scalar.tm_mday % 7) { + printf("%dd ", scalar.tm_mday); + } else if (scalar.tm_mday) { + printf("%dw ", scalar.tm_mday / 7); + } + if (scalar.tm_yday && scalar.tm_mon) printf("(%dd) ", scalar.tm_yday); + printf("\n"); +} + +%} + +%token Number Month Day +%left '+' '-' +%right '<' '>' + +%% + +expr: + date { printDate($1); } + | scalar { printScalar($1); } + ; + +date: + dateLit + | '(' date ')' { $$ = $2; } + | '<' date { $$ = dateSub($2, Week); } + | '>' date { $$ = dateAdd($2, Week); } + | date '+' scalar { $$ = dateAdd($1, $3); } + | date '-' scalar { $$ = dateSub($1, $3); } + ; + +scalar: + scalarLit + | '(' scalar ')' { $$ = $2; } + | scalar '+' scalar { $$ = scalarAdd($1, $3); } + | scalar '-' scalar { $$ = scalarSub($1, $3); } + | date '-' date { $$ = dateDiff($1, $3); } + ; + +dateLit: + { $$ = today(); } + | '.' { $$ = today(); } + | Month Number { $$ = monthDay($1.tm_mon, $2.tm_sec); } + | Month Number Number { $$ = monthDayYear($1.tm_mon, $2.tm_sec, $3.tm_sec); } + | Day { $$ = weekDay($1.tm_wday); } + ; + +scalarLit: + Number 'd' { $$ = (struct tm) { .tm_mday = $1.tm_sec }; } + | Number 'w' { $$ = (struct tm) { .tm_mday = 7 * $1.tm_sec }; } + | Number 'm' { $$ = (struct tm) { .tm_mon = $1.tm_sec }; } + | Number 'y' { $$ = (struct tm) { .tm_year = $1.tm_sec }; } + ; + +%% + +static void yyerror(const char *str) { + warnx("%s", str); +} + +static const char *input; + +static int yylex(void) { + while (isspace(*input)) input++; + if (!*input) return EOF; + + if (isdigit(*input)) { + char *rest; + yylval.tm_sec = strtol(input, &rest, 10); + input = rest; + return Number; + } + + for (int i = 0; i < 7; ++i) { + if (strncasecmp(input, Days[i], 3)) continue; + while (isalpha(*input)) input++; + yylval.tm_wday = i; + return Day; + } + + for (int i = 0; i < 12; ++i) { + if (strncasecmp(input, Months[i], 3)) continue; + while (isalpha(*input)) input++; + yylval.tm_mon = i; + return Month; + } + + return *input++; +} + +int main(int argc, char *argv[]) { + if (argc > 1) { + input = argv[1]; + return yyparse(); + } + + struct tm date = today(); + printDate(date); + printf("\n"); + + char *line = NULL; + size_t cap = 0; + while (0 < getline(&line, &cap, stdin)) { + if (line[0] == '\n') continue; + + if (today().tm_mday != date.tm_mday) { + warnx("the date has changed"); + date = today(); + } + + input = line; + yyparse(); + printf("\n"); + } +} diff --git a/bin/xx.c b/bin/xx.c new file mode 100644 index 00000000..6d04f2f5 --- /dev/null +++ b/bin/xx.c @@ -0,0 +1,142 @@ +/* Copyright (C) 2017 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <ctype.h> +#include <err.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <sysexits.h> +#include <unistd.h> + +typedef unsigned char byte; + +static bool zero(const byte *ptr, size_t size) { + for (size_t i = 0; i < size; ++i) { + if (ptr[i]) return false; + } + return true; +} + +static struct { + size_t cols; + size_t group; + size_t blank; + bool ascii; + bool offset; + bool skip; +} options = { 16, 8, 0, true, true, false }; + +static void dump(FILE *file) { + bool skip = false; + + byte buf[options.cols]; + size_t offset = 0; + for ( + size_t size; + (size = fread(buf, 1, sizeof(buf), file)); + offset += size + ) { + if (options.skip) { + if (zero(buf, size)) { + if (!skip) printf("*\n"); + skip = true; + continue; + } else { + skip = false; + } + } + + if (options.blank) { + if (offset && offset % options.blank == 0) { + printf("\n"); + } + } + + if (options.offset) { + printf("%08zX: ", offset); + } + + for (size_t i = 0; i < sizeof(buf); ++i) { + if (options.group) { + if (i && !(i % options.group)) { + printf(" "); + } + } + if (i < size) { + printf("%02hhX ", buf[i]); + } else { + printf(" "); + } + } + + if (options.ascii) { + printf(" "); + for (size_t i = 0; i < size; ++i) { + if (options.group) { + if (i && !(i % options.group)) { + printf(" "); + } + } + printf("%c", isprint(buf[i]) ? buf[i] : '.'); + } + } + + printf("\n"); + } +} + +static void undump(FILE *file) { + byte c; + int match; + while (0 < (match = fscanf(file, " %hhx", &c))) { + printf("%c", c); + } + if (!match) errx(EX_DATAERR, "invalid input"); +} + +int main(int argc, char *argv[]) { + bool reverse = false; + const char *path = NULL; + + int opt; + while (0 < (opt = getopt(argc, argv, "ac:g:p:rsz"))) { + switch (opt) { + break; case 'a': options.ascii ^= true; + break; case 'c': options.cols = strtoul(optarg, NULL, 0); + break; case 'g': options.group = strtoul(optarg, NULL, 0); + break; case 'p': options.blank = strtoul(optarg, NULL, 0); + break; case 'r': reverse = true; + break; case 's': options.offset ^= true; + break; case 'z': options.skip ^= true; + break; default: return EX_USAGE; + } + } + if (argc > optind) path = argv[optind]; + if (!options.cols) return EX_USAGE; + + FILE *file = path ? fopen(path, "r") : stdin; + if (!file) err(EX_NOINPUT, "%s", path); + + if (reverse) { + undump(file); + } else { + dump(file); + } + if (ferror(file)) err(EX_IOERR, "%s", path); + + return EX_OK; +} diff --git a/doc/pdf/.gitignore b/doc/pdf/.gitignore new file mode 100644 index 00000000..a1363379 --- /dev/null +++ b/doc/pdf/.gitignore @@ -0,0 +1 @@ +*.pdf diff --git a/doc/pdf/Makefile b/doc/pdf/Makefile new file mode 100644 index 00000000..7afbdcf2 --- /dev/null +++ b/doc/pdf/Makefile @@ -0,0 +1,31 @@ +PDFS += abi.pdf +PDFS += c11.pdf +PDFS += elf.pdf +PDFS += intel-64-opt.pdf +PDFS += intel-64-sdm-vol-1.pdf +PDFS += intel-64-sdm-vol-2.pdf +PDFS += intel-64-sdm-vol-3.pdf +PDFS += intel-64-sdm-vol-4.pdf +PDFS += multiboot.pdf + +ELF = https://refspecs.linuxbase.org/elf +INTEL = https://software.intel.com/sites/default/files/managed + +URL.abi.pdf = ${ELF}/x86_64-abi-0.99.pdf +URL.c11.pdf = http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf +URL.elf.pdf = ${ELF}/elf.pdf +URL.intel-64-opt.pdf = ${INTEL}/9e/bc/64-ia-32-architectures-optimization-manual.pdf +URL.intel-64-sdm-vol-1.pdf = ${INTEL}/a4/60/253665-sdm-vol-1.pdf +URL.intel-64-sdm-vol-2.pdf = ${INTEL}/a4/60/325383-sdm-vol-2abcd.pdf +URL.intel-64-sdm-vol-3.pdf = ${INTEL}/a4/60/325384-sdm-vol-3abcd.pdf +URL.intel-64-sdm-vol-4.pdf = ${INTEL}/22/0d/335592-sdm-vol-4.pdf +URL.multiboot.pdf = https://www.gnu.org/software/grub/manual/multiboot/multiboot.pdf + +all: ${PDFS} + +${PDFS}: + curl -Lf -o $@ ${URL.$@} + chmod a-w $@ + +clean: + rm -f ${PDFS} diff --git a/doc/rfc/.gitignore b/doc/rfc/.gitignore new file mode 100644 index 00000000..808cd63e --- /dev/null +++ b/doc/rfc/.gitignore @@ -0,0 +1,3 @@ +*.txt +*.txt.gz +tags diff --git a/doc/rfc/Makefile b/doc/rfc/Makefile new file mode 100644 index 00000000..87462a6c --- /dev/null +++ b/doc/rfc/Makefile @@ -0,0 +1,21 @@ +PREFIX ?= ~/.local + +MODULE = ftp.rfc-editor.org::rfcs-text-only + +tags: rfctags.pl rfc-index.txt.gz + perl rfctags.pl | sort -f > $@ + +rfc-index.txt.gz: + rsync -ptz ${MODULE}/rfc-index.txt ${MODULE}/'rfc[1-9]*.txt' . + gzip -9f *.txt + +clean: + rm -f tags *.txt *.txt.gz + +install: tags rfc.vim + install -d ${PREFIX}/share/rfc ${PREFIX}/share/nvim/site/plugin + ln -f tags *.txt.gz ${PREFIX}/share/rfc + install -m 644 rfc.vim ${PREFIX}/share/nvim/site/plugin + +uninstall: + rm -fr ${PREFIX}/share/rfc ${PREFIX}/share/nvim/site/plugin/rfc.vim diff --git a/doc/rfc/rfc.vim b/doc/rfc/rfc.vim new file mode 100644 index 00000000..2455d8a6 --- /dev/null +++ b/doc/rfc/rfc.vim @@ -0,0 +1,30 @@ +if !exists('g:rfc_path') + let g:rfc_path = expand('<sfile>:h:h:h:h') . '/rfc' +endif + +function! s:RFC(number) + if !empty(a:number) + let number = str2nr(matchstr(a:number, '\d\+'), 10) + else + let number = '-index' + endif + let path = expand(g:rfc_path . '/rfc' . number . '.txt.gz') + if filereadable(path) + execute 'silent' 'noswapfile' 'view' path + else + echohl ErrorMsg | echo 'No such RFC' a:number | echohl None + endif +endfunction + +function! s:BufRead() + setlocal readonly + setlocal keywordprg=:RFC + setlocal iskeyword=a-z,A-Z,48-57,.,[,],-,_ + nmap <buffer> <silent> gO :call search('^Table of Contents', 'bcs')<CR> +endfunction + +command! -bar -nargs=? RFC call s:RFC(<q-args>) +augroup RFC + autocmd! + autocmd BufRead rfc*.txt.gz call s:BufRead() +augroup END diff --git a/doc/rfc/rfctags.pl b/doc/rfc/rfctags.pl new file mode 100644 index 00000000..01324a0d --- /dev/null +++ b/doc/rfc/rfctags.pl @@ -0,0 +1,28 @@ +use strict; +use warnings; +use open ':encoding(ISO-8859-1)'; + +use IO::Uncompress::Gunzip qw($GunzipError); + +($,, $\) = ("\t", "\n"); +print '!_TAG_FILE_SORTED', 2, $0; # Promise to pipe this through sort -f +for my $rfc (<*.txt.gz>) { + my $handle = new IO::Uncompress::Gunzip $rfc + or die "${rfc}: ${GunzipError}"; + while (<$handle>) { + chomp; + # Section headings + if (/^([\d.]+|[A-Z][.])\s+([^\t]+)?/) { + print $1, $rfc, $.; + print $2, $rfc, $. if $2; + print $1, $rfc, $. if $1 =~ /^([\d.]+)[.]$/; + } + # References + if (/^\s*(\[[\w-]+\])\s{2,}/) { + print $1, $rfc, $.; + print "\\$1", $rfc, $.; # vim ^] prepends \ to [ + } + } + die "${rfc}: $!" if $!; + close $handle; +} diff --git a/etc/CodeQWERTY.bundle/Contents/Info.plist b/etc/CodeQWERTY.bundle/Contents/Info.plist new file mode 100644 index 00000000..f78351e8 --- /dev/null +++ b/etc/CodeQWERTY.bundle/Contents/Info.plist @@ -0,0 +1,19 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> +<plist version="1.0"> + <dict> + <key>CFBundleIdentifier</key> + <string>agency.causal.keyboardlayout.code</string> + <key>CFBundleName</key> + <string>Code QWERTY</string> + <key>CFBundleVersion</key> + <string>1.0</string> + <key>KLInfo_Code QWERTY</key> + <dict> + <key>TISInputSourceID</key> + <string>agency.causal.keyboardlayout.code.qwerty</string> + <key>TISIntendedLanguage</key> + <string>en-CA</string> + </dict> + </dict> +</plist> diff --git a/etc/CodeQWERTY.bundle/Contents/Resources/CodeQWERTY.keylayout b/etc/CodeQWERTY.bundle/Contents/Resources/CodeQWERTY.keylayout new file mode 100644 index 00000000..393a86dd --- /dev/null +++ b/etc/CodeQWERTY.bundle/Contents/Resources/CodeQWERTY.keylayout @@ -0,0 +1,1178 @@ +<?xml version="1.1" encoding="UTF-8"?> +<!DOCTYPE keyboard PUBLIC "" "file://localhost/System/Library/DTDs/KeyboardLayout.dtd"> +<keyboard group="0" id="5069" maxout="1" name="Code QWERTY"> + <layouts> + <layout first="0" last="17" mapSet="16c" modifiers="f4"/> + <layout first="18" last="18" mapSet="994" modifiers="f4"/> + <layout first="21" last="23" mapSet="994" modifiers="f4"/> + <layout first="30" last="30" mapSet="994" modifiers="f4"/> + <layout first="194" last="194" mapSet="994" modifiers="f4"/> + <layout first="197" last="197" mapSet="994" modifiers="f4"/> + <layout first="200" last="201" mapSet="994" modifiers="f4"/> + <layout first="206" last="207" mapSet="994" modifiers="f4"/> + </layouts> + <modifierMap defaultIndex="7" id="f4"> + <keyMapSelect mapIndex="8"> + <modifier keys="command?"/> + </keyMapSelect> + <keyMapSelect mapIndex="0"> + <modifier keys="anyShift? caps? command"/> + </keyMapSelect> + <keyMapSelect mapIndex="9"> + <modifier keys="anyShift caps?"/> + </keyMapSelect> + <keyMapSelect mapIndex="2"> + <modifier keys="caps"/> + </keyMapSelect> + <keyMapSelect mapIndex="3"> + <modifier keys="anyOption"/> + </keyMapSelect> + <keyMapSelect mapIndex="4"> + <modifier keys="anyShift caps? anyOption command?"/> + </keyMapSelect> + <keyMapSelect mapIndex="5"> + <modifier keys="caps anyOption"/> + </keyMapSelect> + <keyMapSelect mapIndex="6"> + <modifier keys="caps? anyOption command"/> + </keyMapSelect> + <keyMapSelect mapIndex="7"> + <modifier keys="anyShift caps? option? command? control"/> + <modifier keys="shift? caps? anyOption command? control"/> + <modifier keys="caps? anyOption? command? control"/> + </keyMapSelect> + </modifierMap> + <keyMapSet id="16c"> + <keyMap index="0"> + <key action="13" code="0"/> + <key code="1" output="s"/> + <key code="2" output="d"/> + <key code="3" output="f"/> + <key code="4" output="h"/> + <key code="5" output="g"/> + <key code="6" output="z"/> + <key code="7" output="x"/> + <key code="8" output="c"/> + <key code="9" output="v"/> + <key code="10" output="§"/> + <key code="11" output="b"/> + <key code="12" output="q"/> + <key code="13" output="w"/> + <key action="14" code="14"/> + <key code="15" output="r"/> + <key action="19" code="16"/> + <key code="17" output="t"/> + <key code="18" output="1"/> + <key code="19" output="2"/> + <key code="20" output="3"/> + <key code="21" output="4"/> + <key code="22" output="6"/> + <key code="23" output="5"/> + <key code="24" output="="/> + <key code="25" output="9"/> + <key code="26" output="7"/> + <key code="27" output="-"/> + <key code="28" output="8"/> + <key code="29" output="0"/> + <key code="30" output="]"/> + <key action="17" code="31"/> + <key action="18" code="32"/> + <key code="33" output="["/> + <key action="15" code="34"/> + <key code="35" output="p"/> + <key code="36" output="
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<key>VisualBellOnlyWhenMuted</key> + <false/> + <key>WindowTitle</key> + <string>Terminal</string> + <key>name</key> + <string>Dark</string> + <key>noWarnProcesses</key> + <array> + <dict> + <key>ProcessName</key> + <string>screen</string> + </dict> + <dict> + <key>ProcessName</key> + <string>tmux</string> + </dict> + <dict> + <key>ProcessName</key> + <string>atch</string> + </dict> + </array> + <key>rowCount</key> + <integer>25</integer> + <key>shellExitAction</key> + <integer>1</integer> + <key>type</key> + <string>Window Settings</string> + <key>useOptionAsMetaKey</key> + <false/> +</dict> +</plist> diff --git a/etc/Go-Mono-Bold-Italic.ttf b/etc/Go-Mono-Bold-Italic.ttf new file mode 100644 index 00000000..c138a9e1 --- /dev/null +++ b/etc/Go-Mono-Bold-Italic.ttf Binary files differdiff --git a/etc/Go-Mono-Bold.ttf b/etc/Go-Mono-Bold.ttf new file mode 100644 index 00000000..551da07f --- /dev/null +++ b/etc/Go-Mono-Bold.ttf Binary files differdiff --git a/etc/Go-Mono-Italic.ttf b/etc/Go-Mono-Italic.ttf new file mode 100644 index 00000000..22d4390e --- /dev/null +++ b/etc/Go-Mono-Italic.ttf Binary files differdiff --git a/etc/Go-Mono.ttf b/etc/Go-Mono.ttf new file mode 100644 index 00000000..71e30123 --- /dev/null +++ b/etc/Go-Mono.ttf Binary files differdiff --git a/etc/README.Go-Mono b/etc/README.Go-Mono new file mode 100644 index 00000000..7043c362 --- /dev/null +++ b/etc/README.Go-Mono @@ -0,0 +1,36 @@ +These fonts were created by the Bigelow & Holmes foundry specifically for the +Go project. See https://blog.golang.org/go-fonts for details. + +They are licensed under the same open source license as the rest of the Go +project's software: + +Copyright (c) 2016 Bigelow & Holmes Inc.. All rights reserved. + +Distribution of this font is governed by the following license. If you do not +agree to this license, including the disclaimer, do not distribute or modify +this font. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + + * Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + * Neither the name of Google Inc. nor the names of its contributors may be + used to endorse or promote products derived from this software without + specific prior written permission. + +DISCLAIMER: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/etc/agpl.c b/etc/agpl.c new file mode 100644 index 00000000..4cc71115 --- /dev/null +++ b/etc/agpl.c @@ -0,0 +1,20 @@ +/* Copyright (C) 2020 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <sysexits.h> diff --git a/etc/code.map b/etc/code.map new file mode 100644 index 00000000..a3749b8d --- /dev/null +++ b/etc/code.map @@ -0,0 +1,20 @@ +include "/usr/share/kbd/keymaps/i386/qwerty/us.map.gz" + +keycode 2 = exclam one +keycode 3 = at two +keycode 4 = numbersign three +keycode 5 = dollar four +keycode 6 = percent five +keycode 7 = asciicircum six +keycode 8 = ampersand seven +keycode 9 = asterisk eight +keycode 10 = parenleft nine +keycode 11 = parenright zero +keycode 12 = underscore minus +keycode 26 = braceleft bracketleft +keycode 27 = braceright bracketright +keycode 43 = bar backslash +keycode 58 = Escape + +keycode 100 = Compose +keycode 125 = Escape diff --git a/etc/gpl.c b/etc/gpl.c new file mode 100644 index 00000000..bed24ff0 --- /dev/null +++ b/etc/gpl.c @@ -0,0 +1,20 @@ +/* Copyright (C) 2020 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <sysexits.h> diff --git a/etc/psf/.gitignore b/etc/psf/.gitignore new file mode 100644 index 00000000..446e6b46 --- /dev/null +++ b/etc/psf/.gitignore @@ -0,0 +1,2 @@ +*.png +*.psfu diff --git a/etc/psf/Makefile b/etc/psf/Makefile new file mode 100644 index 00000000..e92178cd --- /dev/null +++ b/etc/psf/Makefile @@ -0,0 +1,24 @@ +TABLE = default.u + +FONTS += sans6x8.psfu +FONTS += sans6x10.psfu +FONTS += sans6x12.psfu + +PNGS = $(FONTS:psfu=png) + +all: $(FONTS) + +png: $(PNGS) + +$(FONTS): $(TABLE) + +.SUFFIXES: .psf .psfu .png + +.psf.psfu: + psfaddtable $< $(TABLE) $@ + +.psf.png: + psf2png $< > $@ + +clean: + rm -f $(FONTS) $(PNGS) diff --git a/etc/psf/default.u b/etc/psf/default.u new file mode 100644 index 00000000..790ad92b --- /dev/null +++ b/etc/psf/default.u @@ -0,0 +1,259 @@ +# +# Character table extracted from font default8x16.psfu +# +0x000 U+2008 +0x001 U+263a +0x002 U+263b +0x003 U+2665 +0x004 U+2666 +0x005 U+2663 +0x006 U+2660 +0x007 U+2022 +0x008 U+25d8 +0x009 U+25cb +0x00a U+25d9 +0x00b U+2642 +0x00c U+2640 +0x00d U+266a +0x00e U+266b U+266c +0x00f U+263c +0x010 U+25b6 U+25ba +0x011 U+25c0 U+25c4 +0x012 U+2195 +0x013 U+203c +0x014 U+00b6 +0x015 U+00a7 +0x016 U+25ac +0x017 U+21a8 +0x018 U+2191 +0x019 U+2193 +0x01a U+2192 +0x01b U+2190 +0x01c U+221f U+2319 +0x01d U+2194 +0x01e U+25b2 +0x01f U+25bc +0x020 U+0020 U+00a0 U+2000 U+2001 U+2002 U+2003 U+2004 U+2005 U+2006 U+2007 U+2008 U+2009 U+200a U+202f +0x021 U+0021 +0x022 U+0022 +0x023 U+0023 +0x024 U+0024 +0x025 U+0025 +0x026 U+0026 +0x027 U+0027 +0x028 U+0028 +0x029 U+0029 +0x02a U+002a +0x02b U+002b +0x02c U+002c +0x02d U+002d +0x02e U+002e +0x02f U+002f +0x030 U+0030 +0x031 U+0031 +0x032 U+0032 +0x033 U+0033 +0x034 U+0034 +0x035 U+0035 +0x036 U+0036 +0x037 U+0037 +0x038 U+0038 +0x039 U+0039 +0x03a U+003a +0x03b U+003b +0x03c U+003c +0x03d U+003d +0x03e U+003e +0x03f U+003f +0x040 U+0040 +0x041 U+0041 +0x042 U+0042 +0x043 U+0043 +0x044 U+0044 +0x045 U+0045 +0x046 U+0046 +0x047 U+0047 +0x048 U+0048 +0x049 U+0049 +0x04a U+004a +0x04b U+004b +0x04c U+004c +0x04d U+004d +0x04e U+004e +0x04f U+004f +0x050 U+0050 +0x051 U+0051 +0x052 U+0052 +0x053 U+0053 +0x054 U+0054 +0x055 U+0055 +0x056 U+0056 +0x057 U+0057 +0x058 U+0058 +0x059 U+0059 +0x05a U+005a +0x05b U+005b +0x05c U+005c +0x05d U+005d +0x05e U+005e +0x05f U+005f +0x060 U+0060 +0x061 U+0061 +0x062 U+0062 +0x063 U+0063 +0x064 U+0064 +0x065 U+0065 +0x066 U+0066 +0x067 U+0067 +0x068 U+0068 +0x069 U+0069 +0x06a U+006a +0x06b U+006b +0x06c U+006c +0x06d U+006d +0x06e U+006e +0x06f U+006f +0x070 U+0070 +0x071 U+0071 +0x072 U+0072 +0x073 U+0073 +0x074 U+0074 +0x075 U+0075 +0x076 U+0076 +0x077 U+0077 +0x078 U+0078 +0x079 U+0079 +0x07a U+007a +0x07b U+007b +0x07c U+007c +0x07d U+007d +0x07e U+007e +0x07f U+2302 +0x080 U+00c7 +0x081 U+00fc +0x082 U+00e9 +0x083 U+00e2 +0x084 U+00e4 +0x085 U+00e0 +0x086 U+00e5 +0x087 U+00e7 +0x088 U+00ea +0x089 U+00eb +0x08a U+00e8 +0x08b U+00ef +0x08c U+00ee +0x08d U+00ec +0x08e U+00c4 +0x08f U+00c5 U+212b +0x090 U+00c9 +0x091 U+00e6 +0x092 U+00c6 +0x093 U+00f4 +0x094 U+00f6 +0x095 U+00f2 +0x096 U+00fb +0x097 U+00f9 +0x098 U+00ff +0x099 U+00d6 +0x09a U+00dc +0x09b U+00a2 +0x09c U+00a3 +0x09d U+00a5 +0x09e U+20a7 +0x09f U+0192 +0x0a0 U+00e1 +0x0a1 U+00ed +0x0a2 U+00f3 +0x0a3 U+00fa +0x0a4 U+00f1 +0x0a5 U+00d1 +0x0a6 U+00aa +0x0a7 U+00ba +0x0a8 U+00bf +0x0a9 U+2310 +0x0aa U+00ac +0x0ab U+00bd +0x0ac U+00bc +0x0ad U+00a1 +0x0ae U+00ab +0x0af U+00bb +0x0b0 U+2591 +0x0b1 U+2592 +0x0b2 U+2593 +0x0b3 U+2502 +0x0b4 U+2524 +0x0b5 U+2561 +0x0b6 U+2562 +0x0b7 U+2556 +0x0b8 U+2555 +0x0b9 U+2563 +0x0ba U+2551 +0x0bb U+2557 +0x0bc U+255d +0x0bd U+255c +0x0be U+255b +0x0bf U+2510 +0x0c0 U+2514 +0x0c1 U+2534 +0x0c2 U+252c +0x0c3 U+251c +0x0c4 U+2500 +0x0c5 U+253c +0x0c6 U+255e +0x0c7 U+255f +0x0c8 U+255a +0x0c9 U+2554 +0x0ca U+2569 +0x0cb U+2566 +0x0cc U+2560 +0x0cd U+2550 +0x0ce U+256c +0x0cf U+2567 +0x0d0 U+2568 +0x0d1 U+2564 +0x0d2 U+2565 +0x0d3 U+2559 +0x0d4 U+2558 +0x0d5 U+2552 +0x0d6 U+2553 +0x0d7 U+256b +0x0d8 U+256a +0x0d9 U+2518 +0x0da U+250c +0x0db U+2588 +0x0dc U+2584 +0x0dd U+258c +0x0de U+2590 +0x0df U+2580 +0x0e0 U+03b1 +0x0e1 U+00df U+03b2 +0x0e2 U+0393 +0x0e3 U+03c0 +0x0e4 U+03a3 +0x0e5 U+03c3 +0x0e6 U+00b5 U+03bc +0x0e7 U+03c4 +0x0e8 U+03a6 +0x0e9 U+0398 +0x0ea U+03a9 U+2126 +0x0eb U+03b4 +0x0ec U+221e +0x0ed U+03c6 U+2205 U+2300 +0x0ee U+03b5 U+2208 +0x0ef U+2229 +0x0f0 U+2261 +0x0f1 U+00b1 +0x0f2 U+2265 +0x0f3 U+2264 +0x0f4 U+2320 +0x0f5 U+2321 +0x0f6 U+00f7 +0x0f7 U+2248 +0x0f8 U+00b0 +0x0f9 U+2219 U+22c5 +0x0fa U+00b7 +0x0fb U+221a +0x0fc U+207f +0x0fd U+00b2 +0x0fe U+220e U+25a0 +0x0ff U+00a0 diff --git a/etc/psf/sans6x10.psf b/etc/psf/sans6x10.psf new file mode 100644 index 00000000..09bb1af6 --- /dev/null +++ b/etc/psf/sans6x10.psf Binary files differdiff --git a/etc/psf/sans6x12.psf b/etc/psf/sans6x12.psf new file mode 100644 index 00000000..75c1fd49 --- /dev/null +++ b/etc/psf/sans6x12.psf Binary files differdiff --git a/etc/psf/sans6x8.psf b/etc/psf/sans6x8.psf new file mode 100644 index 00000000..fef671d8 --- /dev/null +++ b/etc/psf/sans6x8.psf Binary files differdiff --git a/etc/samba_mdns b/etc/samba_mdns new file mode 100644 index 00000000..66b13af7 --- /dev/null +++ b/etc/samba_mdns @@ -0,0 +1,26 @@ +#!/bin/sh + +# PROVIDE: samba_mdns +# REQUIRE: samba_server mdnsd +# KEYWORD: shutdown + +. /etc/rc.subr + +name="samba_mdns" +rcvar="samba_mdns_enable" + +load_rc_config $name + +: ${samba_mdns_enable:="NO"} +: ${samba_mdns_name:="${hostname}"} +: ${samba_mdns_port:="445"} +: ${samba_mdns_text:=""} + +procname="/usr/local/sbin/mdnsctl" +command="/usr/sbin/daemon" +pidfile="/var/run/${name}.pid" + +publish_args="${samba_mdns_name} smb tcp ${samba_mdns_port} '${samba_mdns_text}'" +command_args="-T mdnsctl -p ${pidfile} -- ${procname} publish ${publish_args}" + +run_rc_command "$1" diff --git a/home/.config/git/config b/home/.config/git/config new file mode 100644 index 00000000..71799784 --- /dev/null +++ b/home/.config/git/config @@ -0,0 +1,21 @@ +[user] + name = C. McEnroe + email = june@causal.agency + +[commit] + verbose = true + +[merge] + conflictStyle = diff3 + +[pull] + rebase = true + +[rebase] + autosquash = true + +[pretty] + log = %Cred%h %Creset%s%C(yellow)%d %Cgreen(%ar) %Cblue<%aN> + +[include] + path = ./private diff --git a/home/.config/git/ignore b/home/.config/git/ignore new file mode 100644 index 00000000..fea54519 --- /dev/null +++ b/home/.config/git/ignore @@ -0,0 +1,2 @@ +*.DS_store +*.dSYM/ diff --git a/home/.config/htop/htoprc b/home/.config/htop/htoprc new file mode 100644 index 00000000..cdda268d --- /dev/null +++ b/home/.config/htop/htoprc @@ -0,0 +1,29 @@ +# Beware! This file is rewritten by htop when settings are changed in the interface. +# The parser is also very primitive, and not human-friendly. +fields=0 48 39 2 46 49 1 +sort_key=47 +sort_direction=1 +hide_threads=0 +hide_kernel_threads=1 +hide_userland_threads=1 +shadow_other_users=0 +show_thread_names=0 +show_program_path=1 +highlight_base_name=1 +highlight_megabytes=1 +highlight_threads=1 +tree_view=1 +header_margin=0 +detailed_cpu_time=0 +cpu_count_from_zero=0 +show_cpu_usage=1 +show_cpu_frequency=0 +update_process_names=0 +account_guest_in_cpu_meter=0 +color_scheme=0 +enable_mouse=0 +delay=15 +left_meters=AllCPUs2 +left_meter_modes=1 +right_meters=Memory Swap +right_meter_modes=1 1 diff --git a/home/.config/nvim/colors/trivial.vim b/home/.config/nvim/colors/trivial.vim new file mode 100644 index 00000000..3ebe8d97 --- /dev/null +++ b/home/.config/nvim/colors/trivial.vim @@ -0,0 +1,65 @@ +hi clear +syntax reset +let colors_name = 'trivial' + +hi Normal ctermbg=NONE ctermfg=NONE + +hi ColorColumn ctermbg=0 +hi EndOfBuffer ctermfg=8 +hi VertSplit cterm=NONE ctermbg=NONE ctermfg=8 +hi LineNr ctermfg=8 +hi MatchParen ctermbg=NONE ctermfg=3 +hi ModeMsg ctermfg=8 +hi MoreMsg ctermfg=2 +hi! link Question MoreMsg +hi WarningMsg ctermfg=1 +hi NonText ctermfg=8 +hi Search ctermbg=NONE ctermfg=11 +hi StatusLine cterm=NONE ctermbg=0 ctermfg=7 +hi StatusLineNC cterm=NONE ctermbg=0 ctermfg=8 +hi Folded ctermbg=0 ctermfg=8 +hi Visual cterm=inverse ctermbg=NONE +hi Title ctermfg=5 +hi Directory ctermfg=4 + +hi Comment ctermfg=4 + +hi! link Constant Normal +hi String ctermfg=6 +hi link Character String + +hi! link Identifier Normal + +hi Statement ctermfg=7 +hi link Operator Normal + +hi PreProc ctermfg=2 + +hi! link Type Normal +hi link StorageClass Statement +hi link Structure StorageClass +hi link Typedef Structure + +hi! link Special Normal +hi SpecialComment ctermfg=12 +hi SpecialKey ctermfg=5 + +hi Underlined ctermfg=NONE +hi Error ctermbg=NONE ctermfg=9 +hi SpellBad ctermbg=NONE ctermfg=1 +hi! link Todo SpecialComment + +hi cFormat ctermfg=14 + +hi diffAdded ctermfg=10 +hi diffRemoved ctermfg=9 + +hi manUnderline cterm=italic + +hi link pythonInclude Statement + +hi link rubyDefine Structure +hi link rubyStringDelimiter String +hi link rubySymbol String + +hi link rustModPath Identifier diff --git a/home/.config/nvim/ftdetect/mdoc.vim b/home/.config/nvim/ftdetect/mdoc.vim new file mode 100644 index 00000000..b845fee6 --- /dev/null +++ b/home/.config/nvim/ftdetect/mdoc.vim @@ -0,0 +1 @@ +autocmd BufRead,BufNewFile *.[1-9] set filetype=mdoc diff --git a/home/.config/nvim/init.vim b/home/.config/nvim/init.vim new file mode 100644 index 00000000..9245ccf4 --- /dev/null +++ b/home/.config/nvim/init.vim @@ -0,0 +1,37 @@ +set hidden +set undofile +set shortmess=atI +set wildmode=list:longest wildignore=*.o +set splitbelow splitright +command! W w +command! Q q + +set tabstop=4 shiftwidth=4 shiftround +set smartindent cinoptions=l1(sU1m1 +set ignorecase smartcase inccommand=nosplit +nmap <leader><leader> :nohlsearch<CR> +set foldmethod=syntax foldlevel=99 foldopen-=block +let asmsyntax = "nasm" +let c_syntax_for_h = 1 +let is_posix = 1 +let man_hardwrap = 1 + +set title laststatus=1 +set scrolloff=1 +set noruler colorcolumn=80 +set list listchars=tab:\ \ ,trail:· +colorscheme trivial + +autocmd TermOpen * setlocal statusline=%{b:term_title} +autocmd BufEnter term://* startinsert +tmap <C-w> <C-\><C-n><C-w> + +let g:clipboard = {'copy':{'+':'pbcopy'},'paste':{'+':'pbpaste'}} +nmap gp `[v`] + +nmap <leader>s vip:sort<CR> +nmap <leader>S $vi{:sort<CR> +nmap <leader>a m':0/^#include <<CR>:nohlsearch<CR>O#include < +nmap <leader>l :0read ~/src/etc/agpl.c<CR>'' +nmap <leader>L :0read ~/src/etc/gpl.c<CR>'' +nmap <leader>d :0delete<CR>:0read !date +'.Dd \%B \%e, \%Y'<CR> diff --git a/home/.config/nvim/syntax/mdoc.vim b/home/.config/nvim/syntax/mdoc.vim new file mode 100644 index 00000000..d9d587f5 --- /dev/null +++ b/home/.config/nvim/syntax/mdoc.vim @@ -0,0 +1,12 @@ +if exists("b:current_syntax") + finish +endif + +runtime! syntax/nroff.vim +unlet! b:current_syntax + +setlocal sections+=ShSs +syntax match mdocBlank /^\.$/ conceal +setlocal conceallevel=2 + +let b:current_syntax = "mdoc" diff --git a/home/.editrc b/home/.editrc new file mode 100644 index 00000000..cf779a7d --- /dev/null +++ b/home/.editrc @@ -0,0 +1 @@ +bind -v diff --git a/home/.gdbinit b/home/.gdbinit new file mode 100644 index 00000000..9422460c --- /dev/null +++ b/home/.gdbinit @@ -0,0 +1 @@ +set disassembly-flavor intel diff --git a/home/.hushlogin b/home/.hushlogin new file mode 100644 index 00000000..e69de29b --- /dev/null +++ b/home/.hushlogin diff --git a/home/.inputrc b/home/.inputrc new file mode 100644 index 00000000..b2cc9d61 --- /dev/null +++ b/home/.inputrc @@ -0,0 +1 @@ +set editing-mode vi diff --git a/home/.lldbinit b/home/.lldbinit new file mode 100644 index 00000000..73f3e676 --- /dev/null +++ b/home/.lldbinit @@ -0,0 +1 @@ +settings set target.x86-disassembly-flavor intel diff --git a/home/.local/bin/aes b/home/.local/bin/aes new file mode 100755 index 00000000..32b52637 --- /dev/null +++ b/home/.local/bin/aes @@ -0,0 +1,7 @@ +#!/bin/sh +set -eu + +enwiden() { + exec tr ' -~' '　ï¼-～' +} +[ $# -gt 0 ] && echo "$*" | enwiden || enwiden diff --git a/home/.local/bin/def b/home/.local/bin/def new file mode 100755 index 00000000..6a1681d3 --- /dev/null +++ b/home/.local/bin/def @@ -0,0 +1,47 @@ +#!/bin/sh +set -eu + +macro=$1 +headers=' +assert.h +complex.h +ctype.h +errno.h +fenv.h +float.h +inttypes.h +iso646.h +limits.h +locale.h +math.h +setjmp.h +signal.h +stdalign.h +stdarg.h +stdatomic.h +stdbool.h +stddef.h +stdint.h +stdio.h +stdlib.h +stdnoreturn.h +string.h +tgmath.h +threads.h +time.h +uchar.h +wchar.h +wctype.h +' + +for header in $headers; do + defined=$( + echo "$macro" \ + | cc -E -x c -include "$header" - \ + 2> /dev/null \ + | tail -n 1 + ) + [ $? -ne 0 -o "$defined" = "$macro" ] && continue + echo "#include <${header}>" + echo "$defined" +done diff --git a/home/.local/bin/git-password b/home/.local/bin/git-password new file mode 100755 index 00000000..41351e38 --- /dev/null +++ b/home/.local/bin/git-password @@ -0,0 +1,7 @@ +#!/bin/sh +set -eu + +url=$1 +echo "url=${url}" \ + | git credential fill \ + | sed -En 's/^password=(.*)/\1/p' diff --git a/home/.local/bin/nasd b/home/.local/bin/nasd new file mode 100755 index 00000000..d64b2c3a --- /dev/null +++ b/home/.local/bin/nasd @@ -0,0 +1,9 @@ +#!/bin/sh +set -eu + +dir=$(mktemp -d) +echo 'bits 64' > "${dir}/input" +cat >> "${dir}/input" +nasm -o "${dir}/output" "${dir}/input" || true +ndisasm -b 64 "${dir}/output" || true +rm -r "$dir" diff --git a/home/.local/bin/notify-send b/home/.local/bin/notify-send new file mode 100755 index 00000000..5630440d --- /dev/null +++ b/home/.local/bin/notify-send @@ -0,0 +1,9 @@ +#!/usr/bin/osascript + +on run argv + if count of argv is 2 then + display notification (item 2 of argv) with title (item 1 of argv) + else + display notification (item 1 of argv) + end if +end run diff --git a/home/.local/bin/np b/home/.local/bin/np new file mode 100755 index 00000000..7d54574c --- /dev/null +++ b/home/.local/bin/np @@ -0,0 +1,7 @@ +#!/usr/bin/osascript + +tell application "iTunes" + tell current track + get "/me is listening to " & artist & " — " & name + end tell +end tell diff --git a/home/.local/bin/versions b/home/.local/bin/versions new file mode 100755 index 00000000..25e5ff72 --- /dev/null +++ b/home/.local/bin/versions @@ -0,0 +1,9 @@ +#!/bin/sh +set -u + +for repo in ~/src/git/*; do + version=$(git -C "${repo}" describe --dirty 2>/dev/null) + if [ $? -eq 0 ]; then + echo "${repo##*/}-${version#v}" + fi +done | sort -nr -t '-' -k 3 | column -t -s '-' diff --git a/home/.profile b/home/.profile new file mode 100644 index 00000000..c0c9ce66 --- /dev/null +++ b/home/.profile @@ -0,0 +1,21 @@ +_PATH=$PATH PATH= +path() { [ -d "$1" ] && PATH="${PATH}${PATH:+:}${1}"; } +for prefix in '' /usr/local /opt/local /usr ~/.local; do + path "${prefix}/sbin" + path "${prefix}/bin" +done +path /usr/games + +export PAGER=less +export LESS=FRXx4 +export EDITOR=nvim +export MANPAGER='nvim +Man!' +export MANSECT=2:3:1:8:6:5:7:4:9 +export CLICOLOR=1 +export GPG_TTY=$(tty) +export NETHACKOPTIONS='pickup_types:$!?+/=, color, DECgraphics' + +[ -e /usr/share/mk/sys.mk ] || export CFLAGS=-O +[ -d /usr/home ] && cd + +export ENV=~/.shrc diff --git a/home/.shrc b/home/.shrc new file mode 100644 index 00000000..bf3e0dfe --- /dev/null +++ b/home/.shrc @@ -0,0 +1,49 @@ +set -o noclobber -o nounset -o vi + +CDPATH=:~ + +alias vim=$EDITOR +alias ls='LC_COLLATE=C ls -p' +alias ll='ls -hl' +alias bc='bc -l' +alias gs='git status --short --branch || ls' gd='git diff' +alias gsh='git show' gl='git log --graph --pretty=log' +alias gco='git checkout' gb='git branch' gm='git merge' gst='git stash' +alias ga='git add' gmv='git mv' grm='git rm' +alias gc='git commit' gca='gc --amend' gt='git tag' +alias gp='git push' gu='git pull' gf='git fetch' gr='git rebase' +alias rand='openssl rand -base64 33' +alias private='eval "$(gpg -d ~/.private)"' +type doas >/dev/null 2>&1 && alias sudo=doas + +cd() { + local path + if [ $# -eq 0 ]; then + command cd + elif [ "${1%%:*}" != "$1" ]; then + path=${1#*:} + [ -n "${path}" ] || path=${PWD#${HOME}/} + SSH_CD=$path ssh -o SendEnv=SSH_CD "${1%%:*}" + elif [ -e "$1" -a ! -d "$1" ]; then + command cd "${1%/*}" && $EDITOR "${1##*/}" + else + command cd "$@" + fi +} +if [ -n "${SSH_CD:-}" ]; then + cd "${SSH_CD}" + unset SSH_CD +fi + +hostname=$(hostname -s) +rprompt() { + local pwd + pwd=${PWD#${HOME}} + [ "${pwd}" != "${PWD}" ] && pwd="~${pwd}" + [ "${TERM%-*}" = 'xterm' ] \ + && printf '\33]0;%s\a' "${SSH_CLIENT:+${hostname}:}${pwd##*/}" >&2 + printf '%s' "${SSH_CLIENT:+${hostname}:}${pwd}" +} +PS1=' +$ ' +RPS1='${?#0} $(rprompt)' diff --git a/home/.ssh/config b/home/.ssh/config new file mode 100644 index 00000000..3fc6a8db --- /dev/null +++ b/home/.ssh/config @@ -0,0 +1,18 @@ +IgnoreUnknown Include +Include config_private + +HashKnownHosts yes + +SendEnv LANG LC_* + +Host monday beastie puffy toaster tux progynova + HostName %h.local + ForwardAgent yes + RemoteForward 7062 127.0.0.1:7062 + +Host june july + HostName %h.nyc3.do.causal.agency + Port 2222 + +Host git.causal.agency temp.causal.agency + Port 2222 diff --git a/install.sh b/install.sh new file mode 100644 index 00000000..6051edaf --- /dev/null +++ b/install.sh @@ -0,0 +1,43 @@ +#!/bin/sh +set -eu + +packages='curl htop neovim sl the_silver_searcher tree' + +FreeBSD() { + sudo pkg install ddate $packages +} + +OpenBSD() { + doas pkg_add $packages +} + +Linux() { + sudo pacman -Sy --needed bc ctags gdb openbssh $packages +} + +installMacPorts() { + xcode-select --install + xcodebuild -license + dir=MacPorts-2.6.3 + tar=${dir}.tar.bz2 + curl -O "https://distfiles.macports.org/MacPorts/${tar}" + tar -x -f $tar + (cd $dir && ./configure) + make -C $dir + sudo make -C $dir install + rm -fr $tar $dir +} + +Darwin() { + [ -d /opt/local ] || installMacPorts + sudo /opt/local/bin/port selfupdate + sudo /opt/local/bin/port -N install git mandoc pkgconfig $packages + sudo mkdir -p /opt/local/etc/select/man + printf 'bin/man\nshare/man/man1/man.1\nshare/man/man1/man.1.gz\n' \ + | sudo tee /opt/local/etc/select/man/base >/dev/null + printf '/usr/bin/man\n/usr/share/man/man1/man.1\n-\n' \ + | sudo tee /opt/local/etc/select/man/system >/dev/null + sudo port select --set man system +} + +$(uname) diff --git a/link.sh b/link.sh new file mode 100644 index 00000000..6763f2e0 --- /dev/null +++ b/link.sh @@ -0,0 +1,23 @@ +#!/bin/sh +set -eu + +die() { + echo "$*" + exit 1 +} + +if [ $# -eq 1 ]; then + link=$1 + file="${PWD}/home/${link#${HOME}/}" + [ ! -f "$file" ] || die "${file} exists" + mkdir -p "${file%/*}" + mv "$link" "$file" +fi + +find home -type f | while read -r find; do + file="${PWD}/${find}" + link="${HOME}/${find#home/}" + mkdir -p "${link%/*}" + [ \( -f "$link" -a -L "$link" \) -o ! -f "$link" ] || die "${link} exists" + ln -fs "$file" "$link" +done diff --git a/port/caesar/.gitignore b/port/caesar/.gitignore new file mode 100644 index 00000000..e2c3034b --- /dev/null +++ b/port/caesar/.gitignore @@ -0,0 +1,2 @@ +caesar +rot13 diff --git a/port/caesar/Makefile b/port/caesar/Makefile new file mode 100644 index 00000000..01205b16 --- /dev/null +++ b/port/caesar/Makefile @@ -0,0 +1,19 @@ +PREFIX = ~/.local +MANDIR = ${PREFIX}/share/man + +LDLIBS = -lm + +all: caesar rot13 + +clean: + rm -f caesar rot13 + +install: caesar rot13 caesar.6 + install -d ${PREFIX}/bin ${MANDIR}/man6 + install caesar rot13 ${PREFIX}/bin + install -m 644 caesar.6 ${MANDIR}/man6/caesar.6 + install -m 644 caesar.6 ${MANDIR}/man6/rot13.6 + +uninstall: + rm -f ${PREFIX}/bin/caesar ${PREFIX}/bin/rot13 + rm -f ${MANDIR}/man6/caesar.6 ${MANDIR}/man6/rot13.6 diff --git a/port/caesar/caesar.6 b/port/caesar/caesar.6 new file mode 100644 index 00000000..4c4bbfb4 --- /dev/null +++ b/port/caesar/caesar.6 @@ -0,0 +1,73 @@ +.\" Copyright (c) 1989, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)caesar.6 8.2 (Berkeley) 11/16/93 +.\" $FreeBSD: releng/11.2/usr.bin/caesar/caesar.6 216239 2010-12-06 19:12:51Z uqs $ +.\" +.Dd November 16, 1993 +.Dt CAESAR 6 +.Os +.Sh NAME +.Nm caesar , rot13 +.Nd decrypt caesar ciphers +.Sh SYNOPSIS +.Nm +.Op Ar rotation +.Nm rot13 +.Sh DESCRIPTION +The +.Nm +utility attempts to decrypt caesar ciphers using English letter frequency +statistics. +.Nm Caesar +reads from the standard input and writes to the standard output. +.Pp +The optional numerical argument +.Ar rotation +may be used to specify a specific rotation value. +If invoked as +.Nm rot13 , +a rotation value of 13 will be used. +.Pp +The frequency (from most common to least) of English letters is as follows: +.Bd -ragged -offset indent +ETAONRISHDLFCMUGPYWBVKXJQZ +.Ed +.Pp +Their frequencies as a percentage are as follows: +.Bd -ragged -offset indent +E(13), T(10.5), A(8.1), O(7.9), N(7.1), R(6.8), I(6.3), S(6.1), H(5.2), +D(3.8), L(3.4), F(2.9), C(2.7), M(2.5), U(2.4), G(2), +P(1.9), Y(1.9), +W(1.5), B(1.4), V(.9), K(.4), X(.15), J(.13), Q(.11), Z(.07). +.Ed +.Pp +Rotated postings to +.Tn USENET +and some of the databases used by the +.Xr fortune 6 +program are rotated by 13 characters. diff --git a/port/caesar/caesar.c b/port/caesar/caesar.c new file mode 100644 index 00000000..cd6cd579 --- /dev/null +++ b/port/caesar/caesar.c @@ -0,0 +1,159 @@ +/* + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Rick Adams. + * + * Authors: + * Stan King, John Eldridge, based on algorithm suggested by + * Bob Morris + * 29-Sep-82 + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if 0 +#ifndef lint +static const char copyright[] = +"@(#) Copyright (c) 1989, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static const char sccsid[] = "@(#)caesar.c 8.1 (Berkeley) 5/31/93"; +#endif /* not lint */ +#endif +#include <sys/cdefs.h> +//__FBSDID("$FreeBSD: releng/11.2/usr.bin/caesar/caesar.c 241846 2012-10-22 03:06:53Z eadler $"); + +#include <errno.h> +#include <math.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <unistd.h> + +#define LINELENGTH 2048 +#define ROTATE(ch, perm) \ + isascii(ch) ? ( \ + isupper(ch) ? ('A' + (ch - 'A' + perm) % 26) : \ + islower(ch) ? ('a' + (ch - 'a' + perm) % 26) : ch) : ch + +/* + * letter frequencies (taken from some unix(tm) documentation) + * (unix is a trademark of Bell Laboratories) + */ +static double stdf[26] = { + 7.97, 1.35, 3.61, 4.78, 12.37, 2.01, 1.46, 4.49, 6.39, 0.04, + 0.42, 3.81, 2.69, 5.92, 6.96, 2.91, 0.08, 6.63, 8.77, 9.68, + 2.62, 0.81, 1.88, 0.23, 2.07, 0.06, +}; + +static void printit(char *); + +int +main(int argc, char **argv) +{ + int ch, dot, i, nread, winnerdot = 0; + char *inbuf; + int obs[26], try, winner; + + if (argc > 1) + printit(argv[1]); + + if (!(inbuf = malloc((size_t)LINELENGTH))) { + (void)fprintf(stderr, "caesar: out of memory.\n"); + exit(1); + } + + /* adjust frequency table to weight low probs REAL low */ + for (i = 0; i < 26; ++i) + stdf[i] = log(stdf[i]) + log(26.0 / 100.0); + + /* zero out observation table */ + bzero(obs, 26 * sizeof(int)); + + if ((nread = read(STDIN_FILENO, inbuf, (size_t)LINELENGTH)) < 0) { + (void)fprintf(stderr, "caesar: %s\n", strerror(errno)); + exit(1); + } + for (i = nread; i--;) { + ch = (unsigned char) inbuf[i]; + if (isascii(ch)) { + if (islower(ch)) + ++obs[ch - 'a']; + else if (isupper(ch)) + ++obs[ch - 'A']; + } + } + + /* + * now "dot" the freqs with the observed letter freqs + * and keep track of best fit + */ + for (try = winner = 0; try < 26; ++try) { /* += 13) { */ + dot = 0; + for (i = 0; i < 26; i++) + dot += obs[i] * stdf[(i + try) % 26]; + /* initialize winning score */ + if (try == 0) + winnerdot = dot; + if (dot > winnerdot) { + /* got a new winner! */ + winner = try; + winnerdot = dot; + } + } + + for (;;) { + for (i = 0; i < nread; ++i) { + ch = (unsigned char) inbuf[i]; + putchar(ROTATE(ch, winner)); + } + if (nread < LINELENGTH) + break; + if ((nread = read(STDIN_FILENO, inbuf, (size_t)LINELENGTH)) < 0) { + (void)fprintf(stderr, "caesar: %s\n", strerror(errno)); + exit(1); + } + } + exit(0); +} + +static void +printit(char *arg) +{ + int ch, rot; + + if ((rot = atoi(arg)) < 0) { + (void)fprintf(stderr, "caesar: bad rotation value.\n"); + exit(1); + } + while ((ch = getchar()) != EOF) + putchar(ROTATE(ch, rot)); + exit(0); +} diff --git a/port/caesar/rot13.sh b/port/caesar/rot13.sh new file mode 100644 index 00000000..8ce4b94e --- /dev/null +++ b/port/caesar/rot13.sh @@ -0,0 +1,33 @@ +#!/bin/sh - +# +# Copyright (c) 1992, 1993 +# The Regents of the University of California. All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)rot13.sh 8.1 (Berkeley) 5/31/93 +# $FreeBSD: releng/11.2/usr.bin/caesar/rot13.sh 278616 2015-02-12 05:35:00Z cperciva $ + +exec caesar 13 "$@" diff --git a/port/cgram/.gitignore b/port/cgram/.gitignore new file mode 100644 index 00000000..d4f2ec10 --- /dev/null +++ b/port/cgram/.gitignore @@ -0,0 +1 @@ +cgram diff --git a/port/cgram/Makefile b/port/cgram/Makefile new file mode 100644 index 00000000..02f11eec --- /dev/null +++ b/port/cgram/Makefile @@ -0,0 +1,17 @@ +PREFIX = ~/.local +MANDIR = ${PREFIX}/share/man + +LDLIBS = -lcurses + +cgram: + +clean: + rm -f cgram + +install: cgram cgram.6 + install -d ${PREFIX}/bin ${MANDIR}/man6 + install cgram ${PREFIX}/bin + install -m 644 cgram.6 ${MANDIR}/man6 + +uninstall: + rm -f ${PREFIX}/bin/cgram ${MANDIR}/man6/cgram.6 diff --git a/port/cgram/cgram.6 b/port/cgram/cgram.6 new file mode 100644 index 00000000..9f315804 --- /dev/null +++ b/port/cgram/cgram.6 @@ -0,0 +1,65 @@ +.\" $NetBSD: cgram.6,v 1.2 2013/08/04 07:55:09 wiz Exp $ +.\" +.\" Copyright (c) 2004, 2013 The NetBSD Foundation, Inc. +.\" All rights reserved. +.\" +.\" This code is derived from software contributed to The NetBSD Foundation +.\" by David A. Holland. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS +.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS +.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.Dd August 3, 2013 +.Dt CGRAM 6 +.Os +.Sh NAME +.Nm cgram +.Nd solve Sunday-paper cryptograms +.Sh SYNOPSIS +.Nm +.Sh DESCRIPTION +.Nm +is a curses-based widget for solving Sunday-paper-type cryptograms +based on substitution ciphers. +A random cleartext is chosen using +.Xr fortune 6 +and a random substitution key is generated. +.Pp +The ciphertext is displayed. +Typing a letter changes the key so that the letter under the cursor +maps to the newly typed letter, and updates the display accordingly. +Use Emacs-type cursor commands to move around. +Enter a tilde +.Pq ~ +to quit. +Press asterisk +.Pq * +to enter an easier mode where correct letters are displayed in +boldface. +.Sh SEE ALSO +.Xr caesar 6 +.Sh HISTORY +.Nm +was written circa 2004. +It was imported into +.Nx +in 2013 and first appeared in +.Nx 7.0 . diff --git a/port/cgram/cgram.c b/port/cgram/cgram.c new file mode 100644 index 00000000..76ea55fb --- /dev/null +++ b/port/cgram/cgram.c @@ -0,0 +1,344 @@ +/*- + * Copyright (c) 2013 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by David A. Holland. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <ctype.h> +#include <time.h> +#include <err.h> +#include <assert.h> +#include <curses.h> +#include "pathnames.h" + +//////////////////////////////////////////////////////////// + +static char *xstrdup(const char *s) { + char *ret; + + ret = malloc(strlen(s) + 1); + if (ret == NULL) { + errx(1, "Out of memory"); + } + strcpy(ret, s); + return ret; +} + +//////////////////////////////////////////////////////////// + +struct stringarray { + char **v; + int num; +}; + +static void stringarray_init(struct stringarray *a) { + a->v = NULL; + a->num = 0; +} + +static void stringarray_cleanup(struct stringarray *a) { + free(a->v); +} + +static void stringarray_add(struct stringarray *a, const char *s) { + a->v = realloc(a->v, (a->num + 1) * sizeof(a->v[0])); + if (a->v == NULL) { + errx(1, "Out of memory"); + } + a->v[a->num] = xstrdup(s); + a->num++; +} + +//////////////////////////////////////////////////////////// + +static struct stringarray lines; +static struct stringarray sollines; +static bool hinting; +static int scrolldown; +static unsigned curx; +static int cury; + +static void readquote(void) { + FILE *f = popen(_PATH_FORTUNE, "r"); + if (!f) { + err(1, "%s", _PATH_FORTUNE); + } + + char buf[128], buf2[8*sizeof(buf)]; + while (fgets(buf, sizeof(buf), f)) { + char *s = strrchr(buf, '\n'); + assert(s); + assert(strlen(s)==1); + *s = 0; + + int i,j; + for (i=j=0; buf[i]; i++) { + if (buf[i]=='\t') { + buf2[j++] = ' '; + while (j%8) buf2[j++] = ' '; + } + else if (buf[i]=='\b') { + if (j>0) j--; + } + else { + buf2[j++] = buf[i]; + } + } + buf2[j] = 0; + + stringarray_add(&lines, buf2); + stringarray_add(&sollines, buf2); + } + + pclose(f); +} + +static void encode(void) { + int used[26]; + for (int i=0; i<26; i++) used[i] = 0; + + int key[26]; + int keypos=0; + while (keypos < 26) { + int c = random()%26; + if (used[c]) continue; + key[keypos++] = c; + used[c] = 1; + } + + for (int y=0; y<lines.num; y++) { + for (unsigned x=0; lines.v[y][x]; x++) { + if (islower((unsigned char)lines.v[y][x])) { + int q = lines.v[y][x]-'a'; + lines.v[y][x] = 'a'+key[q]; + } + if (isupper((unsigned char)lines.v[y][x])) { + int q = lines.v[y][x]-'A'; + lines.v[y][x] = 'A'+key[q]; + } + } + } +} + +static int substitute(int ch) { + assert(cury>=0 && cury<lines.num); + if (curx >= strlen(lines.v[cury])) { + beep(); + return -1; + } + + int och = lines.v[cury][curx]; + if (!isalpha((unsigned char)och)) { + beep(); + return -1; + } + + int loch = tolower((unsigned char)och); + int uoch = toupper((unsigned char)och); + int lch = tolower((unsigned char)ch); + int uch = toupper((unsigned char)ch); + + for (int y=0; y<lines.num; y++) { + for (unsigned x=0; lines.v[y][x]; x++) { + if (lines.v[y][x]==loch) { + lines.v[y][x] = lch; + } + else if (lines.v[y][x]==uoch) { + lines.v[y][x] = uch; + } + else if (lines.v[y][x]==lch) { + lines.v[y][x] = loch; + } + else if (lines.v[y][x]==uch) { + lines.v[y][x] = uoch; + } + } + } + return 0; +} + +//////////////////////////////////////////////////////////// + +static void redraw(void) { + erase(); + bool won = true; + for (int i=0; i<LINES-1; i++) { + move(i, 0); + int ln = i+scrolldown; + if (ln < lines.num) { + for (unsigned j=0; lines.v[i][j]; j++) { + int ch = lines.v[i][j]; + if (ch != sollines.v[i][j] && isalpha((unsigned char)ch)) { + won = false; + } + bool bold=false; + if (hinting && ch==sollines.v[i][j] && + isalpha((unsigned char)ch)) { + bold = true; + attron(A_BOLD); + } + addch(lines.v[i][j]); + if (bold) { + attroff(A_BOLD); + } + } + } + clrtoeol(); + } + + move(LINES-1, 0); + if (won) { + addstr("*solved* "); + } + addstr("~ to quit, * to cheat, ^pnfb to move"); + + move(LINES-1, 0); + + move(cury-scrolldown, curx); + + refresh(); +} + +static void opencurses(void) { + initscr(); + cbreak(); + noecho(); +} + +static void closecurses(void) { + endwin(); +} + +//////////////////////////////////////////////////////////// + +static void loop(void) { + bool done=false; + while (!done) { + redraw(); + int ch = getch(); + switch (ch) { + case 1: /* ^A */ + curx=0; + break; + case 2: /* ^B */ + if (curx > 0) { + curx--; + } + else if (cury > 0) { + cury--; + curx = strlen(lines.v[cury]); + } + break; + case 5: /* ^E */ + curx = strlen(lines.v[cury]); + break; + case 6: /* ^F */ + if (curx < strlen(lines.v[cury])) { + curx++; + } + else if (cury < lines.num - 1) { + cury++; + curx = 0; + } + break; + case 12: /* ^L */ + clear(); + break; + case 14: /* ^N */ + if (cury < lines.num-1) { + cury++; + } + if (curx > strlen(lines.v[cury])) { + curx = strlen(lines.v[cury]); + } + if (scrolldown < cury - (LINES-2)) { + scrolldown = cury - (LINES-2); + } + break; + case 16: /* ^P */ + if (cury > 0) { + cury--; + } + if (curx > strlen(lines.v[cury])) { + curx = strlen(lines.v[cury]); + } + if (scrolldown > cury) { + scrolldown = cury; + } + break; + case '*': + hinting = !hinting; + break; + case '~': + done = true; + break; + default: + if (isalpha(ch)) { + if (!substitute(ch)) { + if (curx < strlen(lines.v[cury])) { + curx++; + } + if (curx==strlen(lines.v[cury]) && cury < lines.num-1) { + curx=0; + cury++; + } + } + } + else if (curx < strlen(lines.v[cury]) && ch==lines.v[cury][curx]) { + curx++; + if (curx==strlen(lines.v[cury]) && cury < lines.num-1) { + curx=0; + cury++; + } + } + else { + beep(); + } + break; + } + } +} + +//////////////////////////////////////////////////////////// + +int main(void) { + stringarray_init(&lines); + stringarray_init(&sollines); + srandom(time(NULL)); + readquote(); + encode(); + opencurses(); + + loop(); + + closecurses(); + stringarray_cleanup(&sollines); + stringarray_cleanup(&lines); + return 0; +} diff --git a/port/cgram/pathnames.h b/port/cgram/pathnames.h new file mode 100644 index 00000000..40db1eed --- /dev/null +++ b/port/cgram/pathnames.h @@ -0,0 +1,30 @@ +/*- + * Copyright (c) 2013 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by David A. Holland. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#define _PATH_FORTUNE "fortune" diff --git a/port/file2c/.gitignore b/port/file2c/.gitignore new file mode 100644 index 00000000..aafb358f --- /dev/null +++ b/port/file2c/.gitignore @@ -0,0 +1 @@ +file2c diff --git a/port/file2c/Makefile b/port/file2c/Makefile new file mode 100644 index 00000000..09f6b5d0 --- /dev/null +++ b/port/file2c/Makefile @@ -0,0 +1,15 @@ +PREFIX = ~/.local +MANDIR = ${PREFIX}/share/man + +file2c: + +clean: + rm -f file2c + +install: file2c file2c.1 + install -d ${PREFIX}/bin ${MANDIR}/man1 + install file2c ${PREFIX}/bin + install -m 644 file2c.1 ${MANDIR}/man1 + +uninstall: + rm -f ${PREFIX}/bin/file2c ${MANDIR}/man1/file2c.1 diff --git a/port/file2c/file2c.1 b/port/file2c/file2c.1 new file mode 100644 index 00000000..fe1fe5e7 --- /dev/null +++ b/port/file2c/file2c.1 @@ -0,0 +1,75 @@ +.\"---------------------------------------------------------------------------- +.\" "THE BEER-WARE LICENSE" (Revision 42): +.\" <phk@FreeBSD.org> wrote this file. As long as you retain this notice, you +.\" can do whatever you want with this file. If we meet some day, and you think +.\" this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp +.\" --------------------------------------------------------------------------- +.\" +.\" $FreeBSD: releng/11.2/usr.bin/file2c/file2c.1 173197 2007-10-30 17:49:00Z ru $ +.\" +.Dd March 22, 2007 +.Dt FILE2C 1 +.Os +.Sh NAME +.Nm file2c +.Nd convert file to c-source +.Sh SYNOPSIS +.Nm +.Op Fl sx +.Op Fl n Ar count +.Op Ar prefix Op Ar suffix +.Sh DESCRIPTION +The +.Nm +utility reads a file from stdin and writes it to stdout, converting each +byte to its decimal or hexadecimal representation on the fly. +The byte values are separated by a comma. +This also means that the last byte value is not followed by a comma. +By default the byte values are printed in decimal, but when the +.Fl x +option is given, the values will be printed in hexadecimal. +When +.Fl s +option is given, each line is printed with a leading tab and each comma is +followed by a space except for the last one on the line. +.Pp +If more than 70 characters are printed on the same line, that line is +ended and the output continues on the next line. +With the +.Fl n +option this can be made to happen after the specified number of +byte values have been printed. +The length of the line will not be considered anymore. +To have all the byte values printed on the same line, give the +.Fl n +option a negative number. +.Pp +A prefix and suffix strings can be printed before and after the byte values +(resp.) +If a suffix is to be printed, a prefix must also be specified. +The first non-option word is the prefix, which may optionally be followed +by a word that is to be used as the suffix. +.Pp +This program is typically used to embed binary files into C source files. +The prefix is used to define an array type and the suffix is used to end +the C statement. +The +.Fl n , s +and +.Fl x +options are useful when the binary data represents a bitmap and the output +needs to remain readable and/or editable. +Fonts, for example, are a good example of this. +.Sh EXAMPLES +The command: +.Bd -literal -offset indent +date | file2c 'const char date[] = {' ',0};' +.Ed +.Pp +will produce: +.Bd -literal -offset indent +const char date[] = { +83,97,116,32,74,97,110,32,50,56,32,49,54,58,50,56,58,48,53, +32,80,83,84,32,49,57,57,53,10 +,0}; +.Ed diff --git a/port/file2c/file2c.c b/port/file2c/file2c.c new file mode 100644 index 00000000..cff7f602 --- /dev/null +++ b/port/file2c/file2c.c @@ -0,0 +1,92 @@ +/* + * ---------------------------------------------------------------------------- + * "THE BEER-WARE LICENSE" (Revision 42): + * <phk@FreeBSD.org> wrote this file. As long as you retain this notice you + * can do whatever you want with this stuff. If we meet some day, and you think + * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp + * ---------------------------------------------------------------------------- + */ + +#include <sys/cdefs.h> +//__FBSDID("$FreeBSD: releng/11.2/usr.bin/file2c/file2c.c 200462 2009-12-13 03:14:06Z delphij $"); + +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +static void +usage(void) +{ + + fprintf(stderr, "usage: %s [-sx] [-n count] [prefix [suffix]]\n", + "file2c"); + exit(1); +} + +int +main(int argc, char *argv[]) +{ + int c, count, linepos, maxcount, pretty, radix; + + maxcount = 0; + pretty = 0; + radix = 10; + while ((c = getopt(argc, argv, "n:sx")) != -1) { + switch (c) { + case 'n': /* Max. number of bytes per line. */ + maxcount = strtol(optarg, NULL, 10); + break; + case 's': /* Be more style(9) comliant. */ + pretty = 1; + break; + case 'x': /* Print hexadecimal numbers. */ + radix = 16; + break; + case '?': + default: + usage(); + } + } + argc -= optind; + argv += optind; + + if (argc > 0) + printf("%s\n", argv[0]); + count = linepos = 0; + while((c = getchar()) != EOF) { + if (count) { + putchar(','); + linepos++; + } + if ((maxcount == 0 && linepos > 70) || + (maxcount > 0 && count >= maxcount)) { + putchar('\n'); + count = linepos = 0; + } + if (pretty) { + if (count) { + putchar(' '); + linepos++; + } else { + putchar('\t'); + linepos += 8; + } + } + switch (radix) { + case 10: + linepos += printf("%d", c); + break; + case 16: + linepos += printf("0x%02x", c); + break; + default: + abort(); + } + count++; + } + putchar('\n'); + if (argc > 1) + printf("%s\n", argv[1]); + return (0); +} diff --git a/port/wcwidth/.gitignore b/port/wcwidth/.gitignore new file mode 100644 index 00000000..132e8098 --- /dev/null +++ b/port/wcwidth/.gitignore @@ -0,0 +1,3 @@ +*.o +libwcwidth.dylib +wcfix diff --git a/port/wcwidth/COPYRIGHT b/port/wcwidth/COPYRIGHT new file mode 100644 index 00000000..e6472371 --- /dev/null +++ b/port/wcwidth/COPYRIGHT @@ -0,0 +1,190 @@ +musl as a whole is licensed under the following standard MIT license: + +---------------------------------------------------------------------- +Copyright © 2005-2020 Rich Felker, et al. + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +---------------------------------------------------------------------- + +Authors/contributors include: + +A. Wilcox +Ada Worcester +Alex Dowad +Alex Suykov +Alexander Monakov +Andre McCurdy +Andrew Kelley +Anthony G. Basile +Aric Belsito +Arvid Picciani +Bartosz Brachaczek +Benjamin Peterson +Bobby Bingham +Boris Brezillon +Brent Cook +Chris Spiegel +Clément Vasseur +Daniel Micay +Daniel Sabogal +Daurnimator +David Carlier +David Edelsohn +Denys Vlasenko +Dmitry Ivanov +Dmitry V. Levin +Drew DeVault +Emil Renner Berthing +Fangrui Song +Felix Fietkau +Felix Janda +Gianluca Anzolin +Hauke Mehrtens +He X +Hiltjo Posthuma +Isaac Dunham +Jaydeep Patil +Jens Gustedt +Jeremy Huntwork +Jo-Philipp Wich +Joakim Sindholt +John Spencer +Julien Ramseier +Justin Cormack +Kaarle Ritvanen +Khem Raj +Kylie McClain +Leah Neukirchen +Luca Barbato +Luka Perkov +M Farkas-Dyck (Strake) +Mahesh Bodapati +Markus Wichmann +Masanori Ogino +Michael Clark +Michael Forney +Mikhail Kremnyov +Natanael Copa +Nicholas J. Kain +orc +Pascal Cuoq +Patrick Oppenlander +Petr Hosek +Petr Skocik +Pierre Carrier +Reini Urban +Rich Felker +Richard Pennington +Ryan Fairfax +Samuel Holland +Segev Finer +Shiz +sin +Solar Designer +Stefan Kristiansson +Stefan O'Rear +Szabolcs Nagy +Timo Teräs +Trutz Behn +Valentin Ochs +Will Dietz +William Haddon +William Pitcock + +Portions of this software are derived from third-party works licensed +under terms compatible with the above MIT license: + +The TRE regular expression implementation (src/regex/reg* and +src/regex/tre*) is Copyright © 2001-2008 Ville Laurikari and licensed +under a 2-clause BSD license (license text in the source files). The +included version has been heavily modified by Rich Felker in 2012, in +the interests of size, simplicity, and namespace cleanliness. + +Much of the math library code (src/math/* and src/complex/*) is +Copyright © 1993,2004 Sun Microsystems or +Copyright © 2003-2011 David Schultz or +Copyright © 2003-2009 Steven G. Kargl or +Copyright © 2003-2009 Bruce D. Evans or +Copyright © 2008 Stephen L. Moshier or +Copyright © 2017-2018 Arm Limited +and labelled as such in comments in the individual source files. All +have been licensed under extremely permissive terms. + +The ARM memcpy code (src/string/arm/memcpy_el.S) is Copyright © 2008 +The Android Open Source Project and is licensed under a two-clause BSD +license. It was taken from Bionic libc, used on Android. + +The implementation of DES for crypt (src/crypt/crypt_des.c) is +Copyright © 1994 David Burren. It is licensed under a BSD license. + +The implementation of blowfish crypt (src/crypt/crypt_blowfish.c) was +originally written by Solar Designer and placed into the public +domain. The code also comes with a fallback permissive license for use +in jurisdictions that may not recognize the public domain. + +The smoothsort implementation (src/stdlib/qsort.c) is Copyright © 2011 +Valentin Ochs and is licensed under an MIT-style license. + +The x86_64 port was written by Nicholas J. Kain and is licensed under +the standard MIT terms. + +The mips and microblaze ports were originally written by Richard +Pennington for use in the ellcc project. The original code was adapted +by Rich Felker for build system and code conventions during upstream +integration. It is licensed under the standard MIT terms. + +The mips64 port was contributed by Imagination Technologies and is +licensed under the standard MIT terms. + +The powerpc port was also originally written by Richard Pennington, +and later supplemented and integrated by John Spencer. It is licensed +under the standard MIT terms. + +All other files which have no copyright comments are original works +produced specifically for use as part of this library, written either +by Rich Felker, the main author of the library, or by one or more +contibutors listed above. Details on authorship of individual files +can be found in the git version control history of the project. The +omission of copyright and license comments in each file is in the +interest of source tree size. + +In addition, permission is hereby granted for all public header files +(include/* and arch/*/bits/*) and crt files intended to be linked into +applications (crt/*, ldso/dlstart.c, and arch/*/crt_arch.h) to omit +the copyright notice and permission notice otherwise required by the +license, and to use these files without any requirement of +attribution. These files include substantial contributions from: + +Bobby Bingham +John Spencer +Nicholas J. Kain +Rich Felker +Richard Pennington +Stefan Kristiansson +Szabolcs Nagy + +all of whom have explicitly granted such permission. + +This file previously contained text expressing a belief that most of +the files covered by the above exception were sufficiently trivial not +to be subject to copyright, resulting in confusion over whether it +negated the permissions granted in the license. In the spirit of +permissive licensing, and of not having licensing issues being an +obstacle to adoption, that text has been removed. diff --git a/port/wcwidth/Makefile b/port/wcwidth/Makefile new file mode 100644 index 00000000..50faa653 --- /dev/null +++ b/port/wcwidth/Makefile @@ -0,0 +1,27 @@ +PREFIX ?= ~/.local + +OBJS = wcwidth.o wcswidth.o + +all: libwcwidth.dylib wcfix + +libwcwidth.dylib: ${OBJS} + ${CC} -dynamiclib ${LDFLAGS} ${OBJS} -o $@ + +wcwidth.o: nonspacing.h wide.h + +.SUFFIXES: .in + +.in: + sed 's|%%PREFIX%%|${PREFIX}|g' $< > $@ + chmod a+x $@ + +clean: + rm -f libwcwidth.dylib wcfix ${OBJS} + +install: libwcwidth.dylib wcfix + install -d ${PREFIX}/lib ${PREFIX}/bin + install -m 644 libwcwidth.dylib ${PREFIX}/lib + install wcfix ${PREFIX}/bin + +uninstall: + rm -f ${PREFIX}/lib/libwcwidth.dylib ${PREFIX}/bin/wcfix diff --git a/port/wcwidth/nonspacing.h b/port/wcwidth/nonspacing.h new file mode 100644 index 00000000..5d05a3d1 --- /dev/null +++ b/port/wcwidth/nonspacing.h @@ -0,0 +1,89 @@ +16,16,16,18,19,20,21,22,23,24,25,26,27,28,29,30,31,16,16,32,16,16,16,33,34,35, +36,37,38,39,16,16,40,16,16,16,16,16,16,16,16,16,16,16,41,42,16,16,43,16,16,16, +16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16, +16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16, +16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16, +16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16, +16,16,16,16,16,16,16,16,16,16,44,16,45,46,47,48,16,16,16,16,16,16,16,16,16,16, +16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16, +16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16, +16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,49,16,16,50, +51,16,52,53,54,16,16,16,16,16,16,55,16,16,56,16,57,58,59,60,61,62,63,64,65,66, +67,68,16,69,70,71,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16, 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file mode 100644 index 00000000..832c83d6 --- /dev/null +++ b/port/wcwidth/wcfix.in @@ -0,0 +1,7 @@ +#!/bin/sh +set -eu + +export DYLD_FORCE_FLAT_NAMESPACE=1 +export DYLD_INSERT_LIBRARIES=%%PREFIX%%/lib/libwcwidth.dylib + +exec "$@" diff --git a/port/wcwidth/wcswidth.c b/port/wcwidth/wcswidth.c new file mode 100644 index 00000000..5c8a5a4d --- /dev/null +++ b/port/wcwidth/wcswidth.c @@ -0,0 +1,8 @@ +#include <wchar.h> + +int wcswidth(const wchar_t *wcs, size_t n) +{ + int l=0, k=0; + for (; n-- && *wcs && (k = wcwidth(*wcs)) >= 0; l+=k, wcs++); + return (k < 0) ? k : l; +} diff --git a/port/wcwidth/wcwidth.c b/port/wcwidth/wcwidth.c new file mode 100644 index 00000000..36256a53 --- /dev/null +++ b/port/wcwidth/wcwidth.c @@ -0,0 +1,29 @@ +#include <wchar.h> + +static const unsigned char table[] = { +#include "nonspacing.h" +}; + +static const unsigned char wtable[] = { +#include "wide.h" +}; + +int wcwidth(wchar_t wc) +{ + if (wc < 0xffU) + return (wc+1 & 0x7f) >= 0x21 ? 1 : wc ? -1 : 0; + if ((wc & 0xfffeffffU) < 0xfffe) { + if ((table[table[wc>>8]*32+((wc&255)>>3)]>>(wc&7))&1) + return 0; + if ((wtable[wtable[wc>>8]*32+((wc&255)>>3)]>>(wc&7))&1) + return 2; + return 1; + } + if ((wc & 0xfffe) == 0xfffe) + return -1; + if (wc-0x20000U < 0x20000) + return 2; + if (wc == 0xe0001 || wc-0xe0020U < 0x5f || wc-0xe0100U < 0xef) + return 0; + return 1; +} diff --git a/port/wcwidth/wide.h b/port/wcwidth/wide.h new file mode 100644 index 00000000..e403c9a5 --- /dev/null +++ b/port/wcwidth/wide.h @@ -0,0 +1,65 @@ +16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,18,16,16,16,16,16,16,16,16, +16,16,16,16,16,16,16,16,16,19,16,20,21,22,16,16,16,23,16,16,24,25,26,27,28,17, +17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,29, +17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17, +17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17, 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b/txt/.notemap new file mode 100644 index 00000000..acfe44ab --- /dev/null +++ b/txt/.notemap @@ -0,0 +1,3 @@ +5347bbff-b124-432a-a67e-5d90fa34d0d4 books.txt +9efa92ef-a8c0-4fa6-8a2a-13315992162b music.txt +2d3c58f2-a193-4ff5-b79f-fd430f80eb64 shows.txt diff --git a/txt/books.txt b/txt/books.txt new file mode 100644 index 00000000..35657c91 --- /dev/null +++ b/txt/books.txt @@ -0,0 +1,114 @@ +[ 2020 ] + + 19. ★★★ N. K. Jemisin, The Awakened Kingdom + 18. ★★☆ N. K. Jemisin, The Kingdom of Gods + 17. ★★☆ N. K. Jemisin, The Broken Kingdoms + 16. ★★☆ Ann Leckie, Ancillary Justice + 15. ★★☆ Madeline Miller, The Song of Achilles + 14. ★★☆ N. K. Jemisin, The Hundred Thousand Kingdoms + 13. ★★☆ Annalee Newitz, Autonomous + 12. ★☆☆ Tade Thompson, The Rosewater Insurrection + 11. ★★☆ Alix E. Harrow, The Ten Thousand Doors of January + 10. ★★☆ N. K. Jemisin, The Stone Sky + 9. ★★★ Kai Cheng Thom, Fierce Femmes and Notorious Liars + 8. ★☆☆ Amal El-Mohtar & Max Gladstone, This Is How You Lose the Time War + 7. ★★★ N. K. Jemisin, The Obelisk Gate + 6. ★★★ Becky Chambers, To Be Taught, If Fortunate + 5. ★★★ Annalee Newitz, The Future of Another Timeline + 4. ★★☆ Rivers Solomon, The Deep + 3. ★★☆ ed. Hope Nicholson, Love Beyond Body, Space & Time + 2. ★★☆ Tade Thompson, Rosewater + 1. ★★★ Meg Elison, The Book of Flora + +[ 2019 ] + + 42. ★★★ Meg Elison, The Book of Etta + 41. ★★☆ Martha Wells, Exit Strategy + 40. ★★☆ Martha Wells, Artificial Condition + 39. ★★☆ N. K. Jemisin, The Fifth Season + 38. ★★☆ Martha Wells, Rogue Protocol + 37. ★★☆ Yoon Ha Lee, Ninefox Gambit + 36. ★★★ Rebecca Makkai, The Great Believers + 35. ★★☆ Meg Elison, The Book of the Unnamed Midwife + 34. ★★☆ Martha Wells, All Systems Red + 33. ★★☆ Nnedi Okorafor, The Book of Phoenix + 32. ★★☆ JY Yang, The Red Threads of Fortune + 31. ★★☆ JY Yang, The Black Tides of Heaven + 30. ★☆☆ Rebecca Roanhorse, Trail of Lightning + 29. ★☆☆ Jo Walton, The Just City + 28. ★★★ Arkady Martine, A Memory Called Empire + 27. ★★☆ Mary Robinette Kowal, The Fated Sky + 26. ★★★ Becky Chambers, Record of a Spaceborn Few + 25. ★★☆ Mary Robinette Kowal, The Calculating Stars + 24. ★★☆ Octavia E. Butler, Imago + 23. ★★☆ Octavia E. Butler, Kindred + 22. ★★☆ Octavia E. Butler, Adulthood Rites + 21. ★★★ Octavia E. Butler, Wild Seed + 20. ★★☆ Octavia E. Butler, Parable of the Talents + 19. ★★☆ Jeff VanderMeer, Acceptance + 18. ★★★ Becky Chambers, A Closed and Common Orbit + 17. ★★☆ Octavia E. Butler, Dawn + 16. ★★☆ Jeff VanderMeer, Authority + 15. ★★☆ Octavia E. Butler, Parable of the Sower + 14. ★★☆ C. A. Higgins, Lightless + 13. ★☆☆ Alfred Bester, The Demolished Man + 12. ★★★ Karin Tidbeck, Amatka + 11. ★☆☆ Catherynne M. Valente, Space Opera + 10. ★★☆ Rivers Solomon, An Unkindness of Ghosts + 9. ★★★ Becky Chambers, The Long Way to a Small Angry Planet + 8. ★★☆ Emily St. John Mandel, Station Eleven + 7. ★★★ Douglas Adams, Dirk Gently's Holistic Detective Agency + 6. ★★★ Octavia E. Butler, Fledgling + 5. ★★★ Jeff VanderMeer, Annihilation + 4. ★★☆ Alfred Bester, The Stars My Destination + 3. ★☆☆ Samuel R. Delany, The Einstein Intersection + 2. ★★★ Octavia E. Butler, Mind of My Mind + 1. ★☆☆ Robert A. Heinlein, Waldo & Magic, Inc. + +[ 2018 ] + + 25. ★★★ Douglas Adams, The Long Dark Tea-Time of the Soul + 24. ★★☆ Khaled Hosseini, A Thousand Splendid Suns + 23. ★★☆ Nathan Altice, I Am Error + 22. ★★★ Ruth Ozeki, A Tale for the Time Being + 21. ★☆☆ Arthur C. Clarke, Earthlight + 20. ★★★ Terry Pratchett & Neil Gaiman, Good Omens + 19. ★☆☆ Robert A. Heinlein, Starship Troopers + 18. ★★☆ Liu Cixin, The Three-Body Problem + 17. ★★☆ Robert A. Heinlein, Revolt in 2100 + 16. ★★☆ ed. Robert A. Heinlein, Tomorrow, the Stars + 15. ★★☆ Robert A. Heinlein, Assignment in Eternity + 14. ★☆☆ Robert A. Heinlein, The Rolling Stones + 13. ★★☆ Robert A. Heinlein, Starman Jones + 12. ★☆☆ Robert A. Heinlein, Space Cadet + 11. ★☆☆ Robert A. Heinlein, Farmer in the Sky + 10. ★★☆ Robert A. Heinlein, Between Planets + 9. ★★☆ Robert A. Heinlein, Red Planet + 8. ★☆☆ Robert A. Heinlein, Rocket Ship Galileo + 7. ★☆☆ Robert A. Heinlein, Sixth Column + 6. ★☆☆ Robert A. Heinlein, Beyond This Horizon + 5. ★★☆ Robert A. Heinlein, Orphans of the Sky + 4. ★★☆ Tracy Kidder, The Soul of a New Machine + 3. ★★★ James Alan Gardner, Ascending + 2. ★★★ Anne Frank, The Diary of a Young Girl + 1. ★★★ Harper Lee, Go Set a Watchman + +[ 2017 ] + + 1. ★★★ James Alan Gardner, Expendable + +[ ... ] + + • ★★★ Harper Lee, To Kill a Mockingbird + • ★★★ Douglas Adams, The Hitchhiker's Guide to the Galaxy + • ★★★ Douglas Adams, The Restaurant at the End of the Universe + • ★★☆ Douglas Adams, Life, the Universe and Everything + • ★★★ Douglas Adams, So Long, and Thanks for All the Fish + • ★★☆ Douglas Adams, Mostly Harmless + • ★☆☆ Eoin Colfer, And Another Thing... + • ★★★ Margaret Atwood, The Handmaid's Tale + • ★★☆ Kazuo Ishiguro, Never Let Me Go + • ★★★ Philip Pullman, The Goldan Compass + • ★★★ Philip Pullman, The Subtle Knife + • ★★★ Philip Pullman, The Amber Spyglass + • ★★★ William Goldman, The Princess Bride diff --git a/txt/music.txt b/txt/music.txt new file mode 100644 index 00000000..cd3705c4 --- /dev/null +++ b/txt/music.txt @@ -0,0 +1,285 @@ +Feist — I Feel It All +<https://youtu.be/g-1Gb2rxzlk> + +The Blow — "Come On Petunia" +<https://youtu.be/MO1HSfzK1Ns> + +Black Country, New Road — Sunglasses +<https://youtu.be/UAZhzi9cpkc> + +Mitski, Xiu Xiu — Between the Breaths +<https://youtu.be/HnhTkFl5Imw> + +Black Dresses — CREEP U +<https://youtu.be/w9RSZmltcVI> + +BACKXWASH — DONT COME TO THE WOODS +<https://youtu.be/7ZcJsWyGbOw> + +William Bonney — See Ya Later +<https://youtu.be/-uCUlvUlr9s> + +Four Tet — Hands +<https://youtu.be/ojZoQbRt1tc> + +Buffy Sainte-Marie — Darling Don't Cry + +LINGUA IGNOTA — DO YOU DOUBT ME TRAITOR +<https://youtu.be/M1ZweG__q-w> + +Lizzo — Truth Hurts +<https://youtu.be/P00HMxdsVZI> + +Hobo Johnson and The Lovemakers — Tiny Desk Concert +<https://youtu.be/A8a2EosJIbM> + +Poppy — Concrete +<https://youtu.be/WwoGhpYdebQ> + +Kim Petras — Do Me +<https://youtu.be/LShK0Yhd964> + +Kim Petras — Heart to Break +<https://youtu.be/5CPeHQHAQyo> + +Anomie — Avorter n'est pas tuer +<https://youtu.be/W1iGXRDeZf4> + +Zhaoze — Birds Contending +<https://zhaoze.bandcamp.com/album/birds-contending> + +Colin Stetson — Reborn +<https://youtu.be/MVnSFj6XQZY> + +Holly Herndon — Frontier +<https://youtu.be/rvNqNgHAEys> + +Bleachers — Tiny Desk Concert +<https://youtu.be/QCtkkX2f18M> + +Girlpool — Tiny Desk Concert +<https://youtu.be/VNM8Tg9pvDU> + +Daughters — You Won't Get What You Want +<https://daughters.bandcamp.com/album/you-wont-get-what-you-want> + +La Dispute — FULTON STREET I +<https://ladispute.bandcamp.com/track/fulton-street-i> + +KASHIWA Daisuke — Stella +<https://youtu.be/ei7cdynwRMA> + +Jeff Wayne — The Eve of the War +<https://youtu.be/6YwFvmnbj3E> + +Julia Holter — I Shall Love 2 +<https://youtu.be/k5uwPaCvbhA> + +Chromatics — Running Up That Hill +<https://youtu.be/Mgv88ZLi6LY> + +Low — Double Negative +<https://lowtheband.bandcamp.com/album/double-negative> + +Rival Consoles — Helios +<https://youtu.be/T8n-XC_2a-k> + +Tiffany — I Think We're Alone Now +<https://youtu.be/w6Q3mHyzn78> + +Pulp — Common People +<https://youtu.be/yuTMWgOduFM> + +XTC — Making Plans for Nigel +<https://youtu.be/gZjZBCZWxpg> + +New Order — Temptation +<https://youtu.be/xxDv_RTdLQo> + +Street Sects — In for a World of Hurt +<https://streetsects.bandcamp.com/track/in-for-a-world-of-hurt> + +New Order — Temptation +<https://youtu.be/xxDv_RTdLQo> + +Blondie — Heart of Glass +<https://youtu.be/fWPhhlKHM80> + +Suuns — Watch You, Watch Me +<https://suuns.bandcamp.com/track/watch-you-watch-me> + +Neckbeard Deathcamp — White Nationalism is for Basement Dwelling Losers +<https://neckbearddeathcamp.bandcamp.com/album/white-nationalism-is-for-basement-dwelling-losers> + +rook — shed blood +<https://rooksfeather.bandcamp.com/album/shed-blood> + +SOPHIE — OIL OF EVERY PEARL'S UN-INSIDES +<http://smarturl.it/SOPHIEALBUM> + +Rosetta — Utopioid +<https://theanaesthete.bandcamp.com/album/utopioid> + +Desire — Under Your Spell +<https://youtu.be/9K7rmxjk5RQ> + +Broken Social Scene — Anthems for a Seventeen-Year Old Girl +<https://youtu.be/DDqNL0js0iU> + +Shinsei Kamattechan — Yuugure no tori +<https://youtu.be/sUW4dDWiz-A> + +Petite Meller — The Flute +<https://youtu.be/BLwgeV7dXOI> + +King Gizzard and the Lizard Wizard — Flying Microtonal Banana +<https://youtu.be/D0BsgJxw208> + +rook&nomie — DAYDREAM +<https://youtu.be/00TdaTffFeY> + +Spiritualized — Ladies and Gentlemen We Are Floating in Space +<https://youtu.be/p47V3w4m1yg> + +Street Sects — End Position +<https://streetsects.bandcamp.com/album/end-position-2> + +Converge — The Dusk in Us +<https://convergecult.bandcamp.com/album/the-dusk-in-us> + +St. Vincent — MASSEDUCTION + +Godspeed You! Black Emperor — Undoing a Luciferian Towers +<https://godspeedyoublackemperor.bandcamp.com/track/undoing-a-luciferian-towers> + +Florist — Tiny Desk Concert +<https://youtu.be/WbyyxIZ02Zs> + +CHVRCHES — Tiny Desk Concert +<https://youtu.be/haunJARHPm4> + +Aurora — Tiny Desk Concert +<https://youtu.be/evBgLWQwAFA> + +Joy Division — Atmosphere +<https://youtu.be/1EdUjlawLJM> + +Underworld — Born Slippy +<https://youtu.be/iTFrCbQGyvM> + +Converge — I Can Tell You About Pain +<https://convergecult.bandcamp.com/album/i-can-tell-you-about-pain> + +CocoRosie — Lost Girls +<https://youtu.be/aRa-SlftLQo> + +FAUVE — Blizzard +<https://youtu.be/HMpmedi_pH4> + +FAUVE — Nuits Fauves +<https://youtu.be/cwaAppsy5yo> + +Sarin — House of Leaves +<https://sarin.bandcamp.com/track/house-of-leaves-split-w-guiltfeeder> + +Chromatics — Shadow +<https://youtu.be/IGUboLZx3Tk> + +Arcade Fire — Creature Comfort +<https://youtu.be/xzwicesJQ7E> + +Arcade Fire — Everything Now +<https://youtu.be/zC30BYR3CUk> + +Ed Schrader's Music Beat — Sermon + +Jessica Moss — Pools of Light + +Death Grips — Steroids (Crouching Tiger Hidden Gabber Megamix) +<https://youtu.be/JUTKTk60aGk> + +Saltland — A Common Truth + +Colin Stetson — All This I Do for Glory +<https://colinstetson.bandcamp.com/album/all-this-i-do-for-glory> + +Xiu Xiu — Forget +<https://youtu.be/ywRzfwA75pY> + +Arca — Arca + +Joni Void — Dissociation (Kyla's Song) +<http://cstrecords.com/cst125/> + +Do Make Say Think — Bound and Boundless +<http://cstrecords.com/cst120/> + +The Body Lovers / The Body Haters + +Unwound — Leaves Turn Inside You + +Xiu Xiu — Fabulous Muscles + +Xiu Xiu — A Promise + +Saltland — Light of Mercy +<http://cstrecords.com/saltland-releases-new-single-light-of-mercy/> + +Jessica Moss — Glaciers I (Pt I) +<http://cstrecords.com/cst124/> + +BNNY RBBT — Big World +<http://www.bnnyrbbt.fans> + +Woman is the Earth — Depths +<https://womanistheearth.bandcamp.com/album/depths> + +Saltland — I Only Wish This For You +<http://cstrecords.com/cst123/> + +Sun Kil Moon — Benji +<https://youtu.be/UtndQzCUEY4> + +Neil Cicierega — Mouth Moods +<http://www.neilcic.com/mouthmoods/> + +Those Who Walk Away — "First Degraded Rhythm" + "First Partially Recollected Conversation" +<http://cstrecords.com/cst122/> + +Dan Smith — Some Tunes +<https://thedancemyth.bandcamp.com/album/some-tunes> + +Avec le soleil sortant de sa bouche — Pas pire pop, I Love You So Much + +Arcade Fire — I Give You Power +<https://youtu.be/f6jma9VQEls> + +Xiu Xiu — Jenny GoGo +<https://youtu.be/WMT6MsA3ut8> + +Kero Kero Bonito — Fish Bowl +<https://youtu.be/FY-CjOJCjJE> + +Avec le soleil sortant de sa bouche — Alizé et Margaret D. Midi moins le quart. Sur la plage, un palmier ensanglanté +<http://cstrecords.com/cst121/> + +G.L.O.S.S. — Trans Day of Revenge +<https://girlslivingoutsidesocietysshit.bandcamp.com/releases> + +Joy Division — Love Will Tear Us Apart +<https://youtu.be/zuuObGsB0No> + +Xiu Xiu — Honeysuckle +<https://youtu.be/hYKGR8Er4vM> + +Xiu Xiu — Ceremony +<https://youtu.be/95ms8A2XJY0> + +Xiu Xiu — I Luv the Valley Oh +<https://youtu.be/dztURk0_DOg> + +Porter Robinson & Madeon — Shelter +<https://youtu.be/fzQ6gRAEoy0> + +Julien Baker — Tiny Desk Concert +<https://youtu.be/tADWPTqR_4A> diff --git a/txt/plan.7 b/txt/plan.7 new file mode 100644 index 00000000..5fb8eec1 --- /dev/null +++ b/txt/plan.7 @@ -0,0 +1,45 @@ +.Dd November 26, 2020 +.Dt PLAN 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm plan +.Nd possible future projects +. +.Sh DESCRIPTION +. +.Ss bubger -- mostly works +.Bl -bullet -compact +.It +IMAP mailbox (mailing list) archive generator +.It +export HTML/Atom/mboxrd fragments by UID +.It +assemble fragments into threads using IMAP THREAD +.El +. +.Ss sbubby +.Bl -bullet -compact +.It +mailing list subscription manager for FastMail +.It +process messages from IMAP mailbox +.It +add/remove addresses from CardDAV address book +.It +send confirmations with SMTP +.It +it seems I can't be bothered +implementing all the parts of this +.El +. +.Ss getaddrinfo with SRV +wrap +.Xr getaddrinfo 3 +with +.Xr res_query 3 +SRV lookup +. +.Ss code reuse +discover some method of sharing code +that isn't awful diff --git a/txt/shows.txt b/txt/shows.txt new file mode 100644 index 00000000..62e6a071 --- /dev/null +++ b/txt/shows.txt @@ -0,0 +1,32 @@ +2020-01-23 (La Sala Rossa) Secondsight, BIG|BRAVE +2019-12-10 (Casa del Popolo) meth, Street Sects +2019-06-22 (Casa del Popolo) Persons Unknown, Palissade, Police des Moeurs, Blu Anxiety +2019-06-22 (Bar Le Ritz) Cloakroom, Pelican +2019-06-21 (La Vitrola) Leash Aggression, CPU Rave, Vitex, Pinocchio +2019-06-20 (Casa del Popolo) Beep Test, Liar//Lier, Wetware +2019-06-18 (Casa del Popolo) Nomadic War Machine; it foot, it ears; Wendy Eisenberg +2019-06-17 (La Sala Rossa) SaskPWR, Lubomyr Melnyk, Architek Percussion (Nicole Lizée) +2019-06-08 (La Sotterenea) Eliza Kavtion, Beep Test, Dri Hiev +2019-05-03 (Turbo Haüs) Issfenn +2019-04-21 (Bar Le Ritz PDB) Claud, Hatchie, Girlpool +2018-11-14 (Turbo Haus) Juss, Street Sects +2018-07-26 (Theatre Fairmount) Uniform, Deafheaven +2018-06-14 (Casa del Popolo) Markus Floats, Mark Lowe, Carodiaro, Eliza Kavtion +2018-04-26 (Bar Le Ritz PDB) Strega, Show of Bedlam, Rosetta +2018-04-13 (La Vitrola) Eliza Kavtion, Lungbutter, Wrekmeister Harmonies +2018-03-08 (Brasserie Beaubien) Clayborne, Nightwitches, Aseethe, Vile Creature +2018-02-08 (Bar Le Ritz PDB) KGD, Efrim Manuel Menuck +2017-09-30 (La Sala Rossa) Truster, Lungbutter, Big Brave +2017-09-19 (La Vitrola) Saccharine, Xiu Xiu +2017-06-01 (Casa del Popolo) Genevieve Heistek, Saltland +2017-05-27 (l’Escogriffe) Sough, Ikaray, C H R I S T +2017-05-14 (Bar Le Ritz PDB) Mutter’d, Aim Low, Wrekmeister Harmonies +2016-09-25 (La Sala Rossa) Cloud Rat, Wolves in the Throne Room +2016-09-21 (Theatre Paradoxe) Godspeed You! Black Emperor +2016-04-08 (La Sala Rossa) Caro Diaro, Wreckage With Stick, Ought +2015-08-13 (La Vitrola) Gutser, Chemical Way, Saul Hittner, In the Name of Havoc +2015-06-10 (La Sala Rossa) Ryan Sawyer, Colin Stetson & Sarah Neufeld +2015-06-09 (La Sala Rossa) The Mile End Ladies String Auxiliary, Christof Migone +2015-06-08 (Casa del Popolo) C H R I S T, Jessica Moss, Big Brave +2014-01-19 (Metropolis) Godspeed You! Black Emperor +2014-01-18 (l’Olympia) Elf Power, Neutral Milk Hotel diff --git a/txt/trouble-at-jinx-hotel.txt b/txt/trouble-at-jinx-hotel.txt new file mode 100644 index 00000000..4db28dd6 --- /dev/null +++ b/txt/trouble-at-jinx-hotel.txt @@ -0,0 +1,236 @@ +mollasses + +...à l'hôtel jinx... + +thierry amar; flüffy erskine; norsola johnson; kate lawrence; +jennifer ménard; mike moya; sam shalabi; scott lregrande chernoff... +chris brokaw; bruce cawdron; david michael curry; lisa gamble; efrim +menuck; michel meunier; js truchy; thalia zedek... à l'hôtel jinx. + +lucky 13: siren's song. la la la, amerika. Saint Christopher's +blues. sign of judgment. Lynn Canyon wedding song. coda. You Can't +Win. trouble in mind. las niñas. Miss Peach's Pawnshop. buffaloed +at Wounded Knee/the weeping winds. no love lost. songs from the +basement. + +trouble at jinx hotel. these cursed recordings began in late winter +2003 at the hotel2tango in montréal. it was a bitter sunday in +march. the world was on the brink of war in old mesopotamia, and +we were all of us sick with the influenza. headaches. fevers. wrecked +guts and water on the lungs. coughing like crazy. everyone with a +base case of the shakes. the hotel wass cold and its ghosts were +unhappy. electricity was being weird. lights flickered and all the +microphones crackled with live current. little blue sparks dancing +through the studio rooms. amplifiers were picking up strange radio +frequencies and the piano, which couldn't hold a tune to save its +own life, was behaving like a cantankerous old man. our cats and +dogs were nervous and excited, a-jitter the way animals get whenever +catastrope looms. we started with a 16-track tape machine, three +spools of 1/4" analog audio tape, and a lucky thirteen little songs +hanging in our heads. but when the 16-track busted and broke down +a few days later, we moved to 2" tape on a 24-track machine and +began anew with our fingers crossed. then the 24-track showed the +first symptoms of its own terrible illness. so we did what we could +with digital audio tape while our trusty friend and technician, +garfield lamb, nursed the equipment back to some semblance of health. +then we transfered the digital recordings to 2" tape and went to +work again... waiting to see what the gods would do next. they +toyed with us for a while before unleashing their full fury: the +24-track, seizing mid-song one evening, ate a reel of tape and sent +it spewing around the studio in little pieces, a scene as cruel as +confetti at a funeral. garfield somehow managed to splice the tape +together again. but our nerves were now in tatters too, scattered +all over the hotel floor. when we finally finished tracking this +music in the summer of 2003, the cats and dogs didn't look any less +worried than when we'd begun. of course, they sensed the disaster +we would soon see for ourselves: as we started mixing the very next +night, a faulty lamp at the studio short-circuited and the tape +machine caught on fire. a freak electrical accident. there was an +asterisk of light; then a dragon-tail of smoke coiling across the +room; then there was a darkness; and then the 24-track quietly died. +the animals, cowering in corners, whined, *why didn't you fucking +fools jump ship at the first sign of the storm*? that's when we +drifted away from the jinxed hotel... floating until we found safe +harbour in a studio we could borrow for a few days - one whose own +resident dogs, zoro and ciska, greeted us with idiot grins and the +contented looks of drunken sailors on calm seas. mixing was finished +in a kind of delirious distress at MixArt in notre-dame-de-grace, +montréal, autumn 2003. these lucky thirteen. dieu merci. slgc. *new +year's eve* 2003. + +siren's song. instrumental. + +la la la, amerika. amerika is crawling with cops tonight as we put +our fists through the windows of the world i know you're broken and +you're down at the mouth but you're pouting like a punished little +girl when darkness calls night falls oh mother where are the children +you've orphaned all over the Earth we're frightened and sickened +and poverty-stricken and waiting for you to send word when darkness +calls the sky falls we're tired mother and we're poor we're wretched +at your teeming shore we're homeless and tossed by the storm looking +for the light at your golden door when darkness calls night falls. + +flüffy: marching drum, percussion & choir; norsola: cello & voice; +kate: violin; jennifer: voice; moya: Crumar organ; dmc: viola & +choir; gamble: choir; efrim: choir; js: upright bass; thalia: voice; +scott: acoustic guitars & vocals; scott recorded the air-raid siren +and bombs on the nightly news when baghdad was attacked by the +united states and great britain in march 2003; words & music by +scott chernoff, as stolen from the inscription on the statue of +liberty: *give me your tired your poor your huddled masses yearning +to breathe the wretched refuse of your teeming shore send these the +homeless tempest-tossed to me i lift my lamp beside the golden +door*. + +Saint Christopher's blues. the locusts are in the jimson Shit Creek +is on the rise and you're out wrecking eternity this town looks +like a prison in September's crimson sky when i should be loving +you perfectly you're such a pretty little mess with your Saint +Christopher blues and that doomed little look in your eye the weight +of the world rests all upon your tiny shoes but June why are you +so terrified give me the locust and the flood i'm a Fool for Love +but i'm kneeling in Shit Creek tonight. + +thierry: upright & electric bass; flüffy: marching drum; kate: +violin; jennifer: voice; moya: piano & Crumar organ; bruce: drums; +gramble: scrap metal; scott: electric guitar & vocals. words & music +by scott chernoff. + +sign of judgment. yes sign of judgment yes sign of judgment yes +sign of judgment time ain't long i don't like old Satan none of his +tempting charms cheats you at your Jesus now and roll you in his +arms yes sign of judgment yes sign of judgment yes sign of judgment +time ain't long i don't like old Satan nothing he say or do tell +one lie to hurt us all and two to make it true yes sign of judgment +yes sign of judgment yes sign of judgment time ain't long. + +norsola: cello; jennifer: voice; efrim: electric guitar & harmonium; +js: upright bass; thalia: voice; scott: acoustic guitar & vocals. +words & music by kid prince moore (traditional). + +Lynn Canyon wedding song. well i never cared very much for the west +except for you there who i loved the best now please take me back +east i wrote your name in silver and green where Love and Hate Play +with Fate and History now please take me back east oh please take +me back east we came to the Canyon across the calm and the wild +from Mountain to Mountain and Island to aisle i came for Abel you +came for Cain and we danced on the tables between the cradle and +the grave and i never cared very much for the west but i will be +there in my Sunday best if you will wear your red wedding dress +then please take me back east oh please take me back east. + +flüffy: saw; jennifer: voice; moya: piano & Crumar organ; dmc: viola +& saw; js: upright bass & voice; scott: acoustic guitar & vocals. +words & music by scott chernoff. + +coda. instrumental. + +flüffy: metal heating duct; michel: banjo; dog & voice drone recorded +by julian evans on video tape at Lynn Canyon 2002; mixed by scott +& harris newman in montréal 2003. + +You Can't Win. you with your railroad bones and you with your +golden-spiked skin you with the wind in your clothes and your hat +like a house caving in oh man You Can't Win oh man You Can't Win +oh man You Can't Win when the Angel of Light is at the window with +the Sanctimonious Kid when you're down and out from Sacramento on +the New York City skids oh man You Can't Win oh man You Can't Win +oh man You Can't Win when the East River is groaning all below the +Williamsburg Bridge when airplanes are exploding in the skyline's +falling limbs oh man You Can't Win oh man You Can't Win oh man You +Can't Win when the Swans are at your throat with their busted burning +wings when they squeal and scream and moan at every last ship that +comes in oh man You Can't Win oh man You Can't Win oh man You Can't +Win. + +flüffy: chor; norsola: choir; jennifer: voice; moya: electric guitars +& Crumar organ; sam: oud; bruce: drums & marimba; dmc: choir; +gramble: scrap metal & choir; efrim: electric guitar & choir; js: +choir; thalia: choir; scott: electric & acoustic guitars, vocals. +words & music by scott chernoff, on the road from sacramento to +nyc. september 11 2001, while reading jack black's 1926 hobo memoir +*You Can't Win* and listening to the music of michael gira.. + +trouble in mind. trouble in mind i'm blue but i won't be blue all +the way you know that sun is gonna shine on me someday i'm gonna +lay my head on some lonesome railroad line and let that big +motherfucking engine nullify my mind trouble in mind i'm blue but +i won't be blue all the way you know that sun is gonna shine on me +someday. + +jennifer: voice; sam: electric guitars; chris: electric guitar; +scott: acoustic guitar & vocals. words & music traditional, as +learned from a 1960s recording by sam lightnin' hopkins. + +las niñas. instrumental. + +andrew mayrs recorded his baby daughter illimani crying while banging +on a piano in kitsilano, vancouver 2003; screaming children recorded +by scott at rue roy, montréal 2003. mixed by scott & harris newman +in montréal 2003. + +Miss Peach's Pawnshop. i bought this cross on the island of St. +Thomas because i wanted jesus on my chest i got this tattoo in New +Orleans and this one in the Orient for my honeymoon and i got this +scar somewhere far far away i was drunk as hell and i tried to walk +home and my hands were broken and i found this prayer in the back +of a magazine i know it's ripped but it came like this it came like +this i bought this song at Miss Peach's Pawn with this old overcoat +and a gold-plated wristwatch and i found this prayer in the back +of a magazine i know it's ripped but it came like this it came like +this it came like this it came like this. + +norsola: cello; kate: violin; jennifer: voice; moya: electric guitar, +piano & Crumar organ; dmc: viola; js: upright bass; scott: acoustic +guitar & vocals. words by hilary peach & scott chernoff; music by +scott chernoff. this is a bastard adaptation of peach's poem *Tattoo* +from her album, *Poems Only Dogs Can Hear*. + +buffaloed at Wounded Knee/the weeping winds. instrumental. (for +l.p. & a.i.m. and a pox on mean-spirited sons of bitches everywhere). + +flüffy: saws; dmc: saws. + +no love lost. good-bye old friend it's time to go this is the end +of all that we know when you worship in the house of burden i worship +in the house of blame as you learn to let your spirit burn i yearn +to be a flame to be a flame and there's no love no love lost as +there is the righteous there is the wrong and there is the night +which is betrayed by the dawn and there's no love no love lost as +there is the sinner there is the god and there is the singer profaned +by the song and there's no love no love lost there's no love no +love lost. + +thierry: electric bass; flüffy: bowed piano & saws; jennifer: voice; +moya: piano; michel: banjo; thalia: voice; scott: acoustic guitar, +bowed piano & vocals. words & music by scott chernoff. + +songs from the basement. there's a song for hatred and a song for +love a song for betrayal and a song for trust there's a song for +what's fated a song for dumb luck a song for what's sacred and one +for what's fucked there's a song which is prayed a song which is +cussed these songs from the basement which play unto us. + +norsola: cello; kate: violin; jennifer: voice; sam: electric guitars; +bruce: marimba & cymbals; dmc: viola; efrim: harmonium; garfield +lamb: knife; scott: acoustic guitar & vocals. words & music by scott +chernoff. mixed by howard bilerman at the hotel... ...after the +storm had all blown by... + +recorded by howard bilerman, efrim & scott at mom & pop sounds in +the hotel2tango, mile end, montréal 2003. except where noted, +everything was mixed by howard bilerman & molasses at MixArt in +notre-dame-de-grace, montréal 2003. mastered by harris newman in +little italy, montréal 2003 & 2004. all songs c&p SOCAN 2004, except +*sign of judgment* & *trouble in mind* which are in the public +domain. hilary peach's poem *Tattoo*, which inspired *Miss Peach's +Pawnshop*, is c&p hilary peach 2003. all music arranged by molasses, +design and hand-lettering by slgc ink. in tokyo. photography by dmc +& norsola. layout by slgc ink. with assistance by sean o'hara. all +love to those who helped: sohara & gary at alien8 recordings; howard +bilerman; cada del popolo; don & ian at constellation; eric craven; +julian evans; michael feuerstack; aidan girt; lea grahovac; taras +grescoe; garfield lamb; tim mahony; andrew mayrs, vally mendoza & +illimani mendoza-mayrs; boris & nicolas at MixArt; harris newman, +*who is never wrong*; hilary peach; sugar & smokey; and all the +cars and dogs... xoxo... diff --git a/txt/tweets.txt b/txt/tweets.txt new file mode 100644 index 00000000..7d8f7e71 --- /dev/null +++ b/txt/tweets.txt @@ -0,0 +1,29 @@ +triangle forum +https://twitter.com/g0m/status/963890156477603841 + +damn ya ass fat what's ya pronouns? +https://twitter.com/msbigmilk/status/1291218055939448833 + +afab +https://twitter.com/ErisGael/status/1257524779046907904 + +chaos emeralds +https://twitter.com/ErisGael/status/1190147736244490240 + +might as well salivate +https://twitter.com/prawn_meat/status/857444039833944064 + +notifications +https://twitter.com/WTMMP/status/1259694226595610629 + +all robot & computers +https://twitter.com/cryptcrier/status/1238339418160680960 + +the wet world +https://twitter.com/TragicAllyHere/status/1137187876507140098 + +a purchase? +https://twitter.com/pant_leg/status/1027693563604230144 + +influencer +https://twitter.com/witchpuppy/status/974690828257054721 diff --git a/www/causal.agency/.gitignore b/www/causal.agency/.gitignore new file mode 100644 index 00000000..7935a3c1 --- /dev/null +++ b/www/causal.agency/.gitignore @@ -0,0 +1,3 @@ +*.html +scheme.css +scheme.png diff --git a/www/causal.agency/Makefile b/www/causal.agency/Makefile new file mode 100644 index 00000000..fdb1748e --- /dev/null +++ b/www/causal.agency/Makefile @@ -0,0 +1,31 @@ +WEBROOT = /usr/local/www/causal.agency + +FILES = index.html scheme.png + +all: ${FILES} + +install: ${FILES} + install -C -m 644 ${FILES} ${WEBROOT} + +INCLUDES = scheme.css torus.html play.html catgirl.html scheme.html + +index.html: index.html.in index.sed ${INCLUDES} + sed -f index.sed index.html.in > index.html + +FLAGS.torus.pty = -n -h 25 +FLAGS.scheme.pty = -n -h 10 +FLAGS.play.pty = -h 16 + +.SUFFIXES: .html .pty + +.pty.html: + shotty ${FLAGS.$<} $< > $@ + +scheme.css: + scheme -s > scheme.css + +scheme.png: + scheme -g > scheme.png + +clean: + rm -f ${FILES} ${INCLUDES} diff --git a/www/causal.agency/catgirl.pty b/www/causal.agency/catgirl.pty new file mode 100644 index 00000000..651e83db --- /dev/null +++ b/www/causal.agency/catgirl.pty @@ -0,0 +1,97 @@ +[?1049h[22;0;0t[1;24r(B[m[4l[?7h[39;49m[?1h=[?1004h[?2004h[39;49m(B[m[H[2J(B[0;7m[90m 0 <network> [21d(B[0m[95mcatgirl[39m(B[m is GPLv3 fwee softwawe ^w^ code is avaiwable fwom[22;9Hhttps://git.causal.agency/catgirl +Traveling... +]2;chat.freenode.net <network>[H +[3M[21d[31m-adams.freenode.net-[37m *** Looking up your hostname... +[31m-adams.freenode.net-[37m *** Checking Ident +[31m-adams.freenode.net-[37m *** Couldn't look up your hostname +[39m(B[m[H +[M[23d[31m-adams.freenode.net-[37m *** No Ident response +[39m(B[m[H +[M[23dYou arrive in freenode +[H +[6M[18d[90m-[39m(B[m Welcome to adams.freenode.net. Thanks to ATW Internet Kft +[90m-[39m(B[m (http://www.atw.hu) for sponsoring this server! +[90m- +-[39m(B[m ADAMS, DOUGLAS (1952-2001). Author of The Hitch Hikers Guide +[90m-[39m(B[m to the Galaxy and many other witty and humourous books, +[90m-[39m(B[m portrayed in his uniquely British irony. He is sorely missed +[H +[6M[18d[90m-[39m(B[m by many millions of devoted fans. "So long and thanks for all +[90m-[39m(B[m the books!" +[90m- +-[39m(B[m Welcome to freenode - supporting the free and open source +[90m-[39m(B[m software communities since 1998. +[90m- +[39m(B[m[H +[3M[21d[90m-[39m(B[m By connecting to freenode you indicate that you have read and +[90m-[39m(B[m accept our policies and guidelines as set out on https://freenode.net +[90m- +[39m(B[m[H +[3M[21d[90m-[39m(B[m In the event that you observe behaviour that contravenes our policies, +[90m-[39m(B[m please notify a volunteer staff member via private message, or send us an +[90m-[39m(B[m e-mail to complaints@freenode.net -- we will do our best to address the +[H +[4M[20d[90m-[39m(B[m situation within a reasonable period of time, and we may request further +[90m-[39m(B[m information or, as appropriate, involve other parties such as channel + operators +[90m-[39m(B[m Group Contacts representing an on-topic group. +[H +[6M[18d[90m- +-[39m(B[m freenode runs an open proxy scanner. +[90m- +-[39m(B[m If you are looking for assistance, you may be able to find a list of +[90m-[39m(B[m volunteer staff on '/stats p' (shows only on-call staff) or by joining +[90m-[39m(B[m #freenode and using the '/who freenode/staff/*' command. You may message +[H +[5M[19d[90m-[39m(B[m any of us at any time. Please note that freenode predominantly provides +[90m-[39m(B[m assistance via private message, and while we have a network channel the +[90m-[39m(B[m primary venue for support requests is via private message to a member +[90m-[39m(B[m of the volunteer staff team. +[90m- +[39m(B[m[H +[5M[19d[90m-[39m(B[m From time to time, volunteer staff may send server-wide notices relating to +[90m-[39m(B[m the project, or the communities that we host. The majority of such notices +[90m-[39m(B[m will be sent as wallops, and you can '/mode <yournick> +w' to ensure that you +[90m-[39m(B[m do not miss them. Important messages relating to the freenode project, + including +[H +[7M[17d[90m-[39m(B[m notices of upcoming maintenance and other scheduled downtime will be issued + as +[90m-[39m(B[m global notices. +[90m- +-[39m(B[m Representing an on-topic project? Don't forget to register, more information +[90m-[39m(B[m can be found on the https://freenode.net website under "Group Registration". +[90m- +[39m(B[m[H +[5M[19d[90m-[39m(B[m Thank you also to our server sponsors for the sustained support in keeping + the +[90m-[39m(B[m network going for close to two decades. +[90m- +-[39m(B[m Thank you for using freenode! +[1;14H[95m 1 freenode-connect ([97m2[95m) [24d[39m(B[m]2;freenode <network> (+2!)[H[95m 1 freenode-connect ([97m2[95m) (B[0;7m[31m 2 #ascii.town +[39m(B[m[K +[K +[K +[K +[K +[K +[K +[K +[K +[K +[K +[K +[K +[K +[K +[K +[K +[96mcatgirl[39m(B[m arrives in [31m#ascii.town[39m(B[m[K +The sign in [31m#ascii.town[39m(B[m reads: https://ascii.town public SSH services and IRC +things <3 AGPL[K +In [31m#ascii.town[39m(B[m are catgirl, gjabell, danopia, larbob, ep, nonlinear, epilys, +benharri, june, yourfate, josuah +[96m<catgirl> [39m(B[m]2;freenode #ascii.town (+2!) /[Kclose 1[H(B[0;7m[31m 1[39m(B[m[24P [24d[96m<catgirl> [39m(B[m]2;freenode #ascii.townhello, world![H +[M[23;10H +[96m<catgirl> [39m(B[m[2;23r[23;1H[1S[1;24r[1;16H(B[0;7m[31m(1) [23d(B[0m[3m[34m* june[39m(B[0m[3m waves +(B[m]2;freenode #ascii.town (1)[1;16H[K[24;11H]2;freenode #ascii.town \ No newline at end of file diff --git a/www/causal.agency/index.html.in b/www/causal.agency/index.html.in new file mode 100644 index 00000000..82f2457e --- /dev/null +++ b/www/causal.agency/index.html.in @@ -0,0 +1,125 @@ +<!DOCTYPE html> +<title>Causal Agency</title> +<meta name="viewport" content="width=device-width, initial-scale=1.0"> +<style> +html { + font-family: monospace; + color: var(--ansi15); + background-color: var(--ansi0); +} +body { + max-width: 80ch; + margin: 2em auto; + padding: 0 1ch; +} +h1 { + font-size: inherit; + font-weight: inherit; + margin: 1em 0 0; +} +p { + margin: 0 0 1em 4ch; +} +a { + color: var(--ansi12); + text-decoration: none; +} +a:visited { + color: var(--ansi13); +} +pre { + border: 1px dashed var(--ansi8); +} +hr { + visibility: hidden; +} +/* include:scheme.css */ +</style> + +<p> +Hi. +I make mostly IRC software in C. +I like FreeBSD and OpenBSD +but also the GPL. +You can find me in +<a href="ircs://chat.freenode.net:6697/#ascii.town">#ascii.town</a> +on freenode +or send mail to june@. + +<p> +<a href="https://git.causal.agency">code</a> +-- +<a href="https://text.causal.agency">words</a> + +<h1><a href="https://git.causal.agency/pounce/about">pounce</a></h1> +<p> +multi-client IRC bouncer + +<h1><a href="https://git.causal.agency/catgirl/about">catgirl</a></h1> +<p> +artisanal IRC client +<p> +demo: <a href="ssh://chat@ascii.town">ssh chat@ascii.town</a> +<p> +<!-- include:catgirl.html --> + +<h1><a href="https://git.causal.agency/litterbox/about">litterbox</a></h1> +<p> +full-text search IRC logger + +<h1><a href="https://git.causal.agency/scooper/about">scooper</a></h1> +<p> +web interface for litterbox + +<h1><a href="https://git.causal.agency/catsit/about">catsit</a></h1> +<p> +process supervisor + +<hr> + +<h1><a href="https://git.causal.agency/imbox/about">imbox & git-fetch-email</a></h1> +<p> +IMAP to mbox + +<h1><a href="https://git.causal.agency/notemap/about">notemap</a></h1> +<p> +mirror notes to IMAP + +<hr> + +<h1><a href="https://ascii.town/explore.html">torus</a></h1> +<p> +collaborative ASCII art +<p> +<a href="ssh://torus@ascii.town">ssh torus@ascii.town</a> +-- +<a href="https://git.causal.agency/torus">src</a> +<p> +<!-- include:torus.html --> + +<h1>play</h1> +<p> +2048 over SSH +<p> +<a href="ssh://play@ascii.town">ssh play@ascii.town</a> +-- +<a href="https://git.causal.agency/play">src</a> +<p> +<!-- include:play.html --> + +<hr> + +<h1><a href="https://git.causal.agency/cards/about">cards</a></h1> +<p> +CARDS.DLL loader for SDL + +<h1><a href="bin/scheme.html">scheme</a></h1> +<p> +earthy terminal colours +<p> +<a href="scheme.png">palette</a> +<!-- include:scheme.html --> + +<h1><a href="bin/">bin</a></h1> +<p> +other little tools diff --git a/www/causal.agency/index.sed b/www/causal.agency/index.sed new file mode 100644 index 00000000..ea32675f --- /dev/null +++ b/www/causal.agency/index.sed @@ -0,0 +1,5 @@ +/include:scheme[.]css/r scheme.css +/include:torus[.]html/r torus.html +/include:play[.]html/r play.html +/include:catgirl[.]html/r catgirl.html +/include:scheme[.]html/r scheme.html diff --git a/www/causal.agency/play.pty b/www/causal.agency/play.pty new file mode 100644 index 00000000..3da44fb7 --- /dev/null +++ b/www/causal.agency/play.pty @@ -0,0 +1,23 @@ +[1;24r[m[4l[?12l[?25h[?1h=[39;49m[?25l[?1h=[39;49m[m[H[2J[1;30H0 + + [38;5;7m[48;5;0m [7C[39;49m[mUse the arrow keys to + [38;5;7m[48;5;0m . . . . [7C[39;49m[mslide and merge tiles. + [38;5;7m[48;5;0m [7C[39;49m[mPress q to quit. + [38;5;7m[48;5;0m +[28D . . . . +[28D +[28D [38;5;15m[48;5;1m[1m +[28D[m[38;5;7m[48;5;0m . . [38;5;15m[48;5;1m[1m 2 2 +[28D[m[38;5;7m[48;5;0m [38;5;15m[48;5;1m[1m +[28D[m[38;5;7m[48;5;0m +[28D . . . . +[28D [39;49m[m[1;30H4[6;10H[38;5;15m[48;5;1m[1m [7;10H 2 [8;10H +[14D[38;5;15m[48;5;2m [7C[m[38;5;7m[48;5;0m +[28D[38;5;15m[48;5;2m[1m 4 [7C[m[38;5;7m[48;5;0m . . +[28D[38;5;15m[48;5;2m[1m [7C[m[38;5;7m[48;5;0m [39;49m[m[3;24H[38;5;15m[48;5;1m[1m [4;24H 2 [5;24H [6;10H[m[38;5;7m[48;5;0m [7;10H . [8;10H +[14D +[7D . +[7D +[7D[38;5;15m[48;5;2m[1m [38;5;15m[48;5;1m +[14D[38;5;15m[48;5;2m 4 [38;5;15m[48;5;1m 2 +[14D[38;5;15m[48;5;2m [38;5;15m[48;5;1m [39;49m[m \ No newline at end of file diff --git a/www/causal.agency/scheme.pty b/www/causal.agency/scheme.pty new file mode 100644 index 00000000..74be2196 --- /dev/null +++ b/www/causal.agency/scheme.pty @@ -0,0 +1,10 @@ +[40m [41m [42m [43m [44m [45m [46m [47m [m +[40m [41m [42m [43m [44m [45m [46m [47m [m +[40m [41m [42m [43m [44m [45m [46m [47m [m +[40m [41m [42m [43m [44m [45m [46m [47m [m +[40m [41m [42m [43m [44m [45m [46m [47m [m +[100m [101m [102m [103m [104m [105m [106m [107m [m +[100m [101m [102m [103m [104m [105m [106m [107m [m +[100m [101m [102m [103m [104m [105m [106m [107m [m +[100m [101m [102m [103m [104m [105m [106m [107m [m +[100m [101m [102m [103m [104m [105m [106m [107m [m[H diff --git a/www/causal.agency/torus.pty b/www/causal.agency/torus.pty new file mode 100644 index 00000000..1e147970 --- /dev/null +++ b/www/causal.agency/torus.pty @@ -0,0 +1,774 @@ +[1;25r[m[4l[39;49m[?1h=[?25l[39;49m[38;5;0m[48;5;0m[m[39;49m[38;5;0m[48;5;0m[H[2J[38;5;3m[48;5;0m┌──────────────────────────────────────────────────────────────────────────────â”[2;1H│[38;5;7m[48;5;0m Welcome to [38;5;12m[48;5;0ma[38;5;14m[48;5;0ms[38;5;10m[48;5;0mc[38;5;11m[48;5;0mi[38;5;9m[48;5;0mi[38;5;13m[48;5;0m.[38;5;12m[48;5;0mt[38;5;14m[48;5;0mo[38;5;10m[48;5;0mw[38;5;11m[48;5;0mn[38;5;7m[48;5;0m! 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[38;5;3m[48;5;0m│[21;1H│[38;5;7m[48;5;0m Code is available from [38;5;6m[48;5;0m<https://code.causal.agency/june/torus>[38;5;7m[48;5;0m. [38;5;3m[48;5;0m│[22;1H│[38;5;7m[48;5;0m [38;5;3m[48;5;0m│[23;1H│[38;5;7m[48;5;0m [38;5;3m[48;5;0m│[24;1H│[38;5;7m[48;5;0m Press [38;5;15m[48;5;0m? [38;5;7m[48;5;0mto open this help again. Press any key to continue... 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+[38;5;2m[48;5;4m||||||||||||||||||||[38;5;0m[48;5;4m\[38;5;2m[48;5;4m|||||||||||||||||||||||||[38;5;5m[48;5;0m|[38;5;7m[48;5;0m [38;5;5m[48;5;0m@[2C[38;5;7m[48;5;0m[K +[38;5;8m[48;5;2m#####################[38;5;0m[48;5;2m\[38;5;8m[48;5;2m########################[38;5;5m[48;5;0m|[38;5;7m[48;5;0m [38;5;5m[48;5;0m@[38;5;7m[48;5;0m [38;5;5m[48;5;0m| [38;5;2m[48;5;0mthanks for watching +[38;5;8m[48;5;2m######################[38;5;0m[48;5;2m\[38;5;8m[48;5;2m#######################[38;5;5m[48;5;0m|[38;5;7m[48;5;0m [38;5;5m[48;5;0m@[38;5;7m[48;5;0m [38;5;5m[48;5;0m|[38;5;7m[48;5;0m [38;5;2m[48;5;0m i guess it's done now +[38;5;8m[48;5;2m^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^[38;5;5m[48;5;0m|[38;5;7m[48;5;0m [38;5;5m[48;5;0m@[38;5;7m[48;5;0mq[38;5;5m[48;5;0m|[38;5;7m[48;5;0m [38;5;9m[48;5;0mwonderful :) [38;5;2m[48;5;0mmight do more[4hr[4l[1;41H[m[39;49m[38;5;0m[48;5;0m \ No newline at end of file diff --git a/www/git.causal.agency/.gitignore b/www/git.causal.agency/.gitignore new file mode 100644 index 00000000..8d20f25d --- /dev/null +++ b/www/git.causal.agency/.gitignore @@ -0,0 +1,3 @@ +about-filter +hi +source-filter diff --git a/www/git.causal.agency/Makefile b/www/git.causal.agency/Makefile new file mode 100644 index 00000000..28e08ba5 --- /dev/null +++ b/www/git.causal.agency/Makefile @@ -0,0 +1,18 @@ +ETC = /usr/local/etc +WWW = /usr/local/www/cgit +LIBEXEC = /usr/local/libexec + +BIN = ../../bin +BINS = about-filter source-filter hi + +install: cgitrc custom.css ${BINS} + install -m 644 cgitrc ${ETC} + install -m 644 custom.css ${WWW} + install ${BINS} ${LIBEXEC} + +hi: ${BIN}/hi.c + ${MAKE} -C ${BIN} $@ + cp ${BIN}/$@ $@ + +clean: + rm -f ${BINS} diff --git a/www/git.causal.agency/about-filter.sh b/www/git.causal.agency/about-filter.sh new file mode 100644 index 00000000..d27d2d48 --- /dev/null +++ b/www/git.causal.agency/about-filter.sh @@ -0,0 +1,15 @@ +#!/bin/sh + +options=fragment,man=%N.%S,includes=../tree/%I + +case "$1" in + (README.[1-9]) + exec /usr/bin/mandoc -T html -O $options + ;; + (*.[1-9]) + exec /usr/bin/mandoc -T html -O $options,toc + ;; + (*) + exec /usr/local/libexec/hi -l text -f html + ;; +esac diff --git a/www/git.causal.agency/cgit/.gitignore b/www/git.causal.agency/cgit/.gitignore new file mode 100644 index 00000000..661df346 --- /dev/null +++ b/www/git.causal.agency/cgit/.gitignore @@ -0,0 +1,12 @@ +# Files I don't care to see in git-status/commit +/cgit +cgit.conf +CGIT-CFLAGS +VERSION +cgitrc.5 +cgitrc.5.fo +cgitrc.5.html +cgitrc.5.pdf +cgitrc.5.xml +*.o +*.d diff --git a/.gitmodules b/www/git.causal.agency/cgit/.gitmodules index 5c6ecb4f..5c6ecb4f 100644 --- a/.gitmodules +++ b/www/git.causal.agency/cgit/.gitmodules diff --git a/.mailmap b/www/git.causal.agency/cgit/.mailmap index 03b54796..03b54796 100644 --- a/.mailmap +++ b/www/git.causal.agency/cgit/.mailmap diff --git a/AUTHORS b/www/git.causal.agency/cgit/AUTHORS index 031de338..031de338 100644 --- a/AUTHORS +++ b/www/git.causal.agency/cgit/AUTHORS diff --git a/COPYING b/www/git.causal.agency/cgit/COPYING index d159169d..d159169d 100644 --- a/COPYING +++ b/www/git.causal.agency/cgit/COPYING diff --git a/Makefile b/www/git.causal.agency/cgit/Makefile index 49109adc..49109adc 100644 --- a/Makefile +++ b/www/git.causal.agency/cgit/Makefile diff --git a/README b/www/git.causal.agency/cgit/README index 7a6b4a40..7a6b4a40 100644 --- a/README +++ b/www/git.causal.agency/cgit/README diff --git a/cache.c b/www/git.causal.agency/cgit/cache.c index 2c70be78..2c70be78 100644 --- a/cache.c +++ b/www/git.causal.agency/cgit/cache.c diff --git a/cache.h b/www/git.causal.agency/cgit/cache.h index 470da4fc..470da4fc 100644 --- a/cache.h +++ b/www/git.causal.agency/cgit/cache.h diff --git a/cgit.c b/www/git.causal.agency/cgit/cgit.c index c4320f04..c4320f04 100644 --- a/cgit.c +++ b/www/git.causal.agency/cgit/cgit.c diff --git a/cgit.css b/www/git.causal.agency/cgit/cgit.css index d4aadbfa..d4aadbfa 100644 --- a/cgit.css +++ b/www/git.causal.agency/cgit/cgit.css diff --git a/cgit.h b/www/git.causal.agency/cgit/cgit.h index 7ec46b48..7ec46b48 100644 --- a/cgit.h +++ b/www/git.causal.agency/cgit/cgit.h diff --git a/cgit.mk b/www/git.causal.agency/cgit/cgit.mk index 3fcc1ca3..3fcc1ca3 100644 --- a/cgit.mk +++ b/www/git.causal.agency/cgit/cgit.mk diff --git a/cgit.png b/www/git.causal.agency/cgit/cgit.png index 425528ee..425528ee 100644 --- a/cgit.png +++ b/www/git.causal.agency/cgit/cgit.png Binary files differdiff --git a/cgitrc.5.txt b/www/git.causal.agency/cgit/cgitrc.5.txt index 33a6a8c0..33a6a8c0 100644 --- a/cgitrc.5.txt +++ b/www/git.causal.agency/cgit/cgitrc.5.txt diff --git a/cmd.c b/www/git.causal.agency/cgit/cmd.c index bf6d8f51..bf6d8f51 100644 --- a/cmd.c +++ b/www/git.causal.agency/cgit/cmd.c diff --git a/cmd.h b/www/git.causal.agency/cgit/cmd.h index 6249b1d8..6249b1d8 100644 --- a/cmd.h +++ b/www/git.causal.agency/cgit/cmd.h diff --git a/configfile.c b/www/git.causal.agency/cgit/configfile.c index e0391091..e0391091 100644 --- a/configfile.c +++ b/www/git.causal.agency/cgit/configfile.c diff --git a/configfile.h b/www/git.causal.agency/cgit/configfile.h index af7ca197..af7ca197 100644 --- a/configfile.h +++ b/www/git.causal.agency/cgit/configfile.h diff --git a/contrib/hooks/post-receive.agefile b/www/git.causal.agency/cgit/contrib/hooks/post-receive.agefile index 2f72ae9c..2f72ae9c 100755 --- a/contrib/hooks/post-receive.agefile +++ b/www/git.causal.agency/cgit/contrib/hooks/post-receive.agefile diff --git a/favicon.ico b/www/git.causal.agency/cgit/favicon.ico index 56ff5938..56ff5938 100644 --- a/favicon.ico +++ b/www/git.causal.agency/cgit/favicon.ico Binary files differdiff --git a/filter.c b/www/git.causal.agency/cgit/filter.c index 70f5b749..70f5b749 100644 --- a/filter.c +++ b/www/git.causal.agency/cgit/filter.c diff --git a/filters/about-formatting.sh b/www/git.causal.agency/cgit/filters/about-formatting.sh index 85daf9c2..85daf9c2 100755 --- a/filters/about-formatting.sh +++ b/www/git.causal.agency/cgit/filters/about-formatting.sh diff --git a/filters/commit-links.sh b/www/git.causal.agency/cgit/filters/commit-links.sh index 58819524..58819524 100755 --- a/filters/commit-links.sh +++ b/www/git.causal.agency/cgit/filters/commit-links.sh diff --git a/filters/email-gravatar.lua b/www/git.causal.agency/cgit/filters/email-gravatar.lua index c39b490d..c39b490d 100644 --- a/filters/email-gravatar.lua +++ b/www/git.causal.agency/cgit/filters/email-gravatar.lua diff --git a/filters/email-gravatar.py b/www/git.causal.agency/cgit/filters/email-gravatar.py index d70440ea..d70440ea 100755 --- a/filters/email-gravatar.py +++ b/www/git.causal.agency/cgit/filters/email-gravatar.py diff --git a/filters/email-libravatar.lua b/www/git.causal.agency/cgit/filters/email-libravatar.lua index 7336baf8..7336baf8 100644 --- a/filters/email-libravatar.lua +++ b/www/git.causal.agency/cgit/filters/email-libravatar.lua diff --git 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a/filters/html-converters/rst2html b/www/git.causal.agency/cgit/filters/html-converters/rst2html index 02d90f81..02d90f81 100755 --- a/filters/html-converters/rst2html +++ b/www/git.causal.agency/cgit/filters/html-converters/rst2html diff --git a/filters/html-converters/txt2html b/www/git.causal.agency/cgit/filters/html-converters/txt2html index 495eeceb..495eeceb 100755 --- a/filters/html-converters/txt2html +++ b/www/git.causal.agency/cgit/filters/html-converters/txt2html diff --git a/filters/owner-example.lua b/www/git.causal.agency/cgit/filters/owner-example.lua index 50fc25a8..50fc25a8 100644 --- a/filters/owner-example.lua +++ b/www/git.causal.agency/cgit/filters/owner-example.lua diff --git a/filters/simple-authentication.lua b/www/git.causal.agency/cgit/filters/simple-authentication.lua index 23d34576..23d34576 100644 --- a/filters/simple-authentication.lua +++ b/www/git.causal.agency/cgit/filters/simple-authentication.lua diff --git a/filters/syntax-highlighting.py b/www/git.causal.agency/cgit/filters/syntax-highlighting.py index e912594c..e912594c 100755 --- a/filters/syntax-highlighting.py +++ b/www/git.causal.agency/cgit/filters/syntax-highlighting.py diff --git a/filters/syntax-highlighting.sh b/www/git.causal.agency/cgit/filters/syntax-highlighting.sh index 840bc34f..840bc34f 100755 --- a/filters/syntax-highlighting.sh +++ b/www/git.causal.agency/cgit/filters/syntax-highlighting.sh diff --git a/gen-version.sh b/www/git.causal.agency/cgit/gen-version.sh index 80cf49af..80cf49af 100755 --- a/gen-version.sh +++ b/www/git.causal.agency/cgit/gen-version.sh diff --git a/git b/www/git.causal.agency/cgit/git -Subproject c522f061d551c9bb8684a7c3859b2ece4499b56 +Subproject c522f061d551c9bb8684a7c3859b2ece4499b56 diff --git a/html.c b/www/git.causal.agency/cgit/html.c index 7f81965f..7f81965f 100644 --- a/html.c +++ b/www/git.causal.agency/cgit/html.c diff --git a/html.h b/www/git.causal.agency/cgit/html.h index fa4de775..fa4de775 100644 --- a/html.h +++ b/www/git.causal.agency/cgit/html.h diff --git a/parsing.c b/www/git.causal.agency/cgit/parsing.c index 93b4767e..93b4767e 100644 --- a/parsing.c +++ b/www/git.causal.agency/cgit/parsing.c diff --git a/robots.txt b/www/git.causal.agency/cgit/robots.txt index 4ce948fe..4ce948fe 100644 --- a/robots.txt +++ b/www/git.causal.agency/cgit/robots.txt diff --git a/scan-tree.c b/www/git.causal.agency/cgit/scan-tree.c index 6a2f65a8..6a2f65a8 100644 --- a/scan-tree.c +++ b/www/git.causal.agency/cgit/scan-tree.c diff --git a/scan-tree.h b/www/git.causal.agency/cgit/scan-tree.h index 1afbd4bb..1afbd4bb 100644 --- a/scan-tree.h +++ b/www/git.causal.agency/cgit/scan-tree.h diff --git a/shared.c b/www/git.causal.agency/cgit/shared.c index 8115469a..8115469a 100644 --- a/shared.c +++ b/www/git.causal.agency/cgit/shared.c diff --git a/tests/.gitignore b/www/git.causal.agency/cgit/tests/.gitignore index 3fd2e965..3fd2e965 100644 --- a/tests/.gitignore +++ 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b/www/git.causal.agency/cgit/ui-log.c diff --git a/ui-log.h b/www/git.causal.agency/cgit/ui-log.h index 325607cd..325607cd 100644 --- a/ui-log.h +++ b/www/git.causal.agency/cgit/ui-log.h diff --git a/ui-patch.c b/www/git.causal.agency/cgit/ui-patch.c index 5a964108..5a964108 100644 --- a/ui-patch.c +++ b/www/git.causal.agency/cgit/ui-patch.c diff --git a/ui-patch.h b/www/git.causal.agency/cgit/ui-patch.h index 7a6cacd5..7a6cacd5 100644 --- a/ui-patch.h +++ b/www/git.causal.agency/cgit/ui-patch.h diff --git a/ui-plain.c b/www/git.causal.agency/cgit/ui-plain.c index 2a7b18cc..2a7b18cc 100644 --- a/ui-plain.c +++ b/www/git.causal.agency/cgit/ui-plain.c diff --git a/ui-plain.h b/www/git.causal.agency/cgit/ui-plain.h index 5bff07b8..5bff07b8 100644 --- a/ui-plain.h +++ b/www/git.causal.agency/cgit/ui-plain.h diff --git a/ui-refs.c b/www/git.causal.agency/cgit/ui-refs.c index 456f610d..456f610d 100644 --- a/ui-refs.c +++ b/www/git.causal.agency/cgit/ui-refs.c diff --git a/ui-refs.h b/www/git.causal.agency/cgit/ui-refs.h index 1d4a54a2..1d4a54a2 100644 --- a/ui-refs.h +++ b/www/git.causal.agency/cgit/ui-refs.h diff --git a/ui-repolist.c b/www/git.causal.agency/cgit/ui-repolist.c index 529a2038..529a2038 100644 --- a/ui-repolist.c +++ b/www/git.causal.agency/cgit/ui-repolist.c diff --git a/ui-repolist.h b/www/git.causal.agency/cgit/ui-repolist.h index 1b6b3227..1b6b3227 100644 --- a/ui-repolist.h +++ b/www/git.causal.agency/cgit/ui-repolist.h diff --git a/ui-shared.c b/www/git.causal.agency/cgit/ui-shared.c index d2358f29..d2358f29 100644 --- a/ui-shared.c +++ b/www/git.causal.agency/cgit/ui-shared.c diff --git a/ui-shared.h b/www/git.causal.agency/cgit/ui-shared.h index 6964873a..6964873a 100644 --- a/ui-shared.h +++ b/www/git.causal.agency/cgit/ui-shared.h diff --git a/ui-snapshot.c b/www/git.causal.agency/cgit/ui-snapshot.c index 556d3ed4..556d3ed4 100644 --- a/ui-snapshot.c +++ b/www/git.causal.agency/cgit/ui-snapshot.c diff --git a/ui-snapshot.h b/www/git.causal.agency/cgit/ui-snapshot.h index a8deec36..a8deec36 100644 --- a/ui-snapshot.h +++ b/www/git.causal.agency/cgit/ui-snapshot.h diff --git a/ui-ssdiff.c b/www/git.causal.agency/cgit/ui-ssdiff.c index af8bc9e0..af8bc9e0 100644 --- a/ui-ssdiff.c +++ b/www/git.causal.agency/cgit/ui-ssdiff.c diff --git a/ui-ssdiff.h b/www/git.causal.agency/cgit/ui-ssdiff.h index 11f27144..11f27144 100644 --- a/ui-ssdiff.h +++ b/www/git.causal.agency/cgit/ui-ssdiff.h diff --git a/ui-stats.c b/www/git.causal.agency/cgit/ui-stats.c index 7272a61a..7272a61a 100644 --- a/ui-stats.c +++ b/www/git.causal.agency/cgit/ui-stats.c diff --git a/ui-stats.h b/www/git.causal.agency/cgit/ui-stats.h index 0e61b03d..0e61b03d 100644 --- a/ui-stats.h +++ b/www/git.causal.agency/cgit/ui-stats.h diff --git a/ui-summary.c b/www/git.causal.agency/cgit/ui-summary.c index 947812a8..947812a8 100644 --- a/ui-summary.c +++ b/www/git.causal.agency/cgit/ui-summary.c diff --git a/ui-summary.h b/www/git.causal.agency/cgit/ui-summary.h index cba696af..cba696af 100644 --- a/ui-summary.h +++ b/www/git.causal.agency/cgit/ui-summary.h diff --git a/ui-tag.c b/www/git.causal.agency/cgit/ui-tag.c index 846d5b14..846d5b14 100644 --- a/ui-tag.c +++ b/www/git.causal.agency/cgit/ui-tag.c diff --git a/ui-tag.h b/www/git.causal.agency/cgit/ui-tag.h index d295cdcd..d295cdcd 100644 --- a/ui-tag.h +++ b/www/git.causal.agency/cgit/ui-tag.h diff --git a/ui-tree.c b/www/git.causal.agency/cgit/ui-tree.c index 1e4efb25..1e4efb25 100644 --- a/ui-tree.c +++ b/www/git.causal.agency/cgit/ui-tree.c diff --git a/ui-tree.h b/www/git.causal.agency/cgit/ui-tree.h index bbd34e35..bbd34e35 100644 --- a/ui-tree.h +++ b/www/git.causal.agency/cgit/ui-tree.h diff --git a/www/git.causal.agency/cgitrc b/www/git.causal.agency/cgitrc new file mode 100644 index 00000000..c187e1ee --- /dev/null +++ b/www/git.causal.agency/cgitrc @@ -0,0 +1,27 @@ +root-title=causal agency +root-desc=“then I'm sorry, no offence, but you write toy programs.†+ +clone-url=https://$HTTP_HOST/$CGIT_REPO_URL +snapshots=tar.gz zip + +enable-blame=1 +enable-commit-graph=1 +enable-subject-links=1 +enable-follow-links=1 +enable-index-owner=0 +repository-sort=age +branch-sort=age + +css=/custom.css +email-filter=/usr/local/libexec/cgit-email +about-filter=/usr/local/libexec/about-filter +source-filter=/usr/local/libexec/source-filter + +readme=:README.7 +readme=:README + +remove-suffix=1 +enable-git-config=1 +scan-path=/home/june/pub + +cache-size=1024 diff --git a/www/git.causal.agency/custom.css b/www/git.causal.agency/custom.css new file mode 100644 index 00000000..802882d2 --- /dev/null +++ b/www/git.causal.agency/custom.css @@ -0,0 +1,87 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at https://mozilla.org/MPL/2.0/. */ + +@import url("cgit.css"); + +* { line-height: 1.25em; } + +div#cgit { + max-width: 117ch; + margin: auto; + font-family: monospace; + -moz-tab-size: 4; + tab-size: 4; +} + +div#cgit table#header td.logo { + display: none; +} +div#cgit table#header td.sub { + border-top: none; +} +div#cgit table.tabs { + border-bottom: none; +} +div#cgit div.content { + border-bottom: none; +} +div#cgit table.list th a { + color: inherit; +} +div#cgit table.list tr:nth-child(even) { + background: inherit; +} +div#cgit table.list tr:hover { + background: inherit; +} +div#cgit table.list tr.nohover-highlight:hover:nth-child(even) { + background: inherit; +} + +div#cgit table.blob td.linenumbers a:target { + color: goldenrod; + text-decoration: underline; + outline: none; +} + +div#cgit div#summary { + max-width: 80ch; +} + +/* from hi(1) */ +div#cgit .hi.Keyword { color: dimgray; } +div#cgit .hi.Macro { color: green; } +div#cgit .hi.Tag { color: inherit; text-decoration: underline; } +div#cgit .hi.String { color: teal; } +div#cgit .hi.Format { color: teal; font-weight: bold; } +div#cgit .hi.Interp { color: olive; } +div#cgit .hi.Comment { color: navy; } +div#cgit .hi.Todo { color: navy; font-weight: bold; } +div#cgit .hi.DiffOld { color: red; } +div#cgit .hi.DiffNew { color: green; } +div#cgit .hi.Tag:target { color: goldenrod; outline: none; } + +/* from mandoc(1) */ +table.head, table.foot { width: 100%; } +td.head-rtitle, td.foot-os { text-align: right; } +td.head-vol { text-align: center; } +div.Pp { margin: 1ex 0ex; } +div.Nd, div.Bf, div.Op { display: inline; } +span.Pa, span.Ad { font-style: italic; } +span.Ms { font-weight: bold; } +dl.Bl-diag > dt { font-weight: bold; } +code.Nm, code.Fl, code.Cm, code.Ic, code.In, code.Fd, code.Fn, +code.Cd { font-weight: bold; font-family: inherit; } + +h1.Sh { font-size: 1.5em; } +table.Nm td:first-child { padding-right: 1ch; } +code.Fl { white-space: nowrap; } +span.RsT { font-style: italic; } +dl.Bl-tag:not(.Bl-compact) dt { margin-top: 1em; } +ul.Bl-bullet:not(.Bl-compact) li { margin-top: 1em; } +div.Bd-indent { margin-left: 4ch; } +table.Bl-column { width: 100%; } +table.foot { margin-top: 1em; } + +div#cgit a.permalink { color: inherit; } diff --git a/www/git.causal.agency/source-filter.sh b/www/git.causal.agency/source-filter.sh new file mode 100644 index 00000000..4febc2e0 --- /dev/null +++ b/www/git.causal.agency/source-filter.sh @@ -0,0 +1,3 @@ +#!/bin/sh + +exec /usr/local/libexec/hi -t -n "$1" -f html -o anchor diff --git a/www/temp.causal.agency/.gitignore b/www/temp.causal.agency/.gitignore new file mode 100644 index 00000000..e31ee94e --- /dev/null +++ b/www/temp.causal.agency/.gitignore @@ -0,0 +1 @@ +up diff --git a/www/temp.causal.agency/Makefile b/www/temp.causal.agency/Makefile new file mode 100644 index 00000000..3e908305 --- /dev/null +++ b/www/temp.causal.agency/Makefile @@ -0,0 +1,16 @@ +WEBROOT = /usr/local/www/temp.causal.agency + +CFLAGS += -std=c11 -Wall -Wextra -Wpedantic -I/usr/local/include +LDFLAGS += -static -L/usr/local/lib +LDLIBS = -lkcgihtml -lkcgi -lz -lmd + +up: + +clean: + rm -f up + +install: up + install -m 700 up ${WEBROOT}/up + +uninstall: + rm -f ${WEBROOT}/up diff --git a/www/temp.causal.agency/up.c b/www/temp.causal.agency/up.c new file mode 100644 index 00000000..885b8acd --- /dev/null +++ b/www/temp.causal.agency/up.c @@ -0,0 +1,156 @@ +/* Copyright (C) 2020 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <fcntl.h> +#include <stdarg.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/capsicum.h> +#include <sys/types.h> +#include <sysexits.h> +#include <time.h> +#include <unistd.h> + +#include <kcgi.h> +#include <kcgihtml.h> + +static int cwd = -1; + +static const struct kvalid Key = { NULL, "file" }; + +static enum kcgi_err head(struct kreq *req, enum khttp http, enum kmime mime) { + return khttp_head(req, kresps[KRESP_STATUS], "%s", khttps[http]) + || khttp_head(req, kresps[KRESP_CONTENT_TYPE], "%s", kmimetypes[mime]); +} + +static enum kcgi_err fail(struct kreq *req, enum khttp http) { + return head(req, http, KMIME_TEXT_PLAIN) + || khttp_body(req) + || khttp_printf(req, "%s\n", khttps[http]); +} + +static enum kcgi_err handle(struct kreq *req) { + if (req->page) return fail(req, KHTTP_404); + + if (req->method == KMETHOD_GET) { + struct khtmlreq html; + struct khtmlreq *h = &html; + return head(req, KHTTP_200, KMIME_TEXT_HTML) + || khttp_body(req) + || khtml_open(h, req, 0) + || khtml_elem(h, KELEM_DOCTYPE) + || khtml_elem(h, KELEM_TITLE) + || khtml_puts(h, "Upload") + || khtml_closeelem(h, 1) + || khtml_attr( + h, KELEM_FORM, + KATTR_METHOD, "post", + KATTR_ACTION, "", + KATTR_ENCTYPE, "multipart/form-data", + KATTR__MAX + ) + || khtml_attr( + h, KELEM_INPUT, + KATTR_TYPE, "file", + KATTR_NAME, Key.name, + KATTR__MAX + ) + || khtml_attr( + h, KELEM_INPUT, + KATTR_TYPE, "submit", + KATTR_VALUE, "Upload", + KATTR__MAX + ) + || khtml_close(h); + + } else if (req->method == KMETHOD_POST) { + struct kpair *field = req->fieldmap[0]; + if (!field || !field->valsz) return fail(req, KHTTP_400); + + char name[256]; + const char *ext = strrchr(field->file, '.'); + if (!ext) ext = ""; + snprintf( + name, sizeof(name), "%jx%08x%s", + (intmax_t)time(NULL), arc4random(), ext + ); + + int fd = openat(cwd, name, O_CREAT | O_EXCL | O_WRONLY, 0644); + if (fd < 0) { + warn("openat"); + return fail(req, KHTTP_507); + } + ssize_t len = write(fd, field->val, field->valsz); + int error = close(fd); + if (len < 0 || error) { + warn("write"); + return fail(req, KHTTP_507); + } + + return head(req, KHTTP_303, KMIME_TEXT_PLAIN) + || khttp_head(req, kresps[KRESP_LOCATION], "/%s", name) + || khttp_body(req) + || khttp_puts(req, name); + + } else { + return fail(req, KHTTP_405); + } +} + +static void sandbox(void) { + cwd = open(".", O_DIRECTORY); + if (cwd < 0) err(EX_CONFIG, "."); + + int error = cap_enter(); + if (error) err(EX_OSERR, "cap_enter"); + + cap_rights_t rights; + cap_rights_init(&rights, CAP_LOOKUP, CAP_CREATE, CAP_PWRITE); + error = cap_rights_limit(cwd, &rights); + if (error) err(EX_OSERR, "cap_rights_limit"); +} + +int main(void) { + const char *page = "up"; + if (khttp_fcgi_test()) { + struct kfcgi *fcgi; + enum kcgi_err error = khttp_fcgi_init(&fcgi, &Key, 1, &page, 1, 0); + if (error) errx(EX_CONFIG, "khttp_fcgi_init: %s", kcgi_strerror(error)); + sandbox(); + for ( + struct kreq req; + KCGI_OK == (error = khttp_fcgi_parse(fcgi, &req)); + khttp_free(&req) + ) { + error = handle(&req); + if (error && error != KCGI_HUP) break; + } + if (error != KCGI_EXIT) { + errx(EX_PROTOCOL, "khttp_fcgi_parse: %s", kcgi_strerror(error)); + } + khttp_fcgi_free(fcgi); + } else { + struct kreq req; + enum kcgi_err error = khttp_parse(&req, &Key, 1, &page, 1, 0); + if (error) errx(EX_PROTOCOL, "khttp_parse: %s", kcgi_strerror(error)); + error = handle(&req); + if (error) errx(EX_PROTOCOL, "%s", kcgi_strerror(error)); + khttp_free(&req); + } +} diff --git a/www/text.causal.agency/.gitignore b/www/text.causal.agency/.gitignore new file mode 100644 index 00000000..37dd51ef --- /dev/null +++ b/www/text.causal.agency/.gitignore @@ -0,0 +1,2 @@ +*.txt +feed.atom diff --git a/www/text.causal.agency/001-make.7 b/www/text.causal.agency/001-make.7 new file mode 100644 index 00000000..b4805729 --- /dev/null +++ b/www/text.causal.agency/001-make.7 @@ -0,0 +1,159 @@ +.Dd September 17, 2018 +.Dt MAKE 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm Using Make +.Nd writing less Makefile +. +.Sh DESCRIPTION +Let's talk about +.Xr make 1 . +I think an important thing to know about +.Xr make 1 +is that you don't need to write a +.Pa Makefile +to use it. +There are default rules +for C, C++ and probably Fortran. +To build +.Pa foo +from +.Pa foo.c , +just run: +. +.Pp +.Dl make foo +. +.Pp +The default rule for C files uses the +.Ev CFLAGS +variable, +so you can set that in the environment +to pass flags to the C compiler: +. +.Pp +.Dl CFLAGS=-Wall make foo +. +.Pp +It also uses +.Ev LDLIBS +for linking, +so you can add libraries with: +. +.Pp +.Dl LDLIBS=-lcurses make foo +. +.Pp +Obviously writing this every time +would become tedious, +so it might be time to write a +.Pa Makefile . +But it really doesn't need much: +. +.Bd -literal -offset indent +CFLAGS += -Wall -Wextra +LDLIBS = -lcurses + +foo: +.Ed +. +.Pp +Assigning +.Ev CFLAGS +with +.Ql += +preserves the system default +or anything passed in the environment. +Declaring +.Pa foo +as the first rule +makes it the default when +.Ql make +is run without a target. +Note that the rule doesn't need a definition; +the default will still be used. +. +.Pp +If +.Pa foo +is built from serveral source files, +unfortunately a rule definition is required: +. +.Bd -literal -offset indent +OBJS = foo.o bar.o baz.o + +foo: $(OBJS) + $(CC) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@ +.Ed +. +.Pp +This rule uses +.Ev LDFLAGS +for passing linker flags, +which is what the default rule does. +The +.Ql $@ +variable here expands to +.Ql foo , +so this rule can be copied easily +for other binary targets. +. +.Pp +If some sources depend on a header file, +they can be automatically rebuilt +when the header changes +by declaring a dependency rule: +. +.Pp +.Dl foo.o bar.o: foo.h +. +.Pp +Note that several files can appear +either side of the +.Ql ":" . +. +.Pp +Lastly, +it's always nice to add a +.Cm clean +target: +. +.Bd -literal -offset indent +clean: + rm -f $(OBJS) foo +.Ed +. +.Pp +I hope this helps getting started with +.Xr make 1 +without writing too much +.Pa Makefile ! +. +.Sh EXAMPLES +The example +.Pa Makefile +in its entirety: +. +.Bd -literal -offset indent +CFLAGS += -Wall -Wextra +LDLIBS = -lcurses +OBJS = foo.o bar.o baz.o + +foo: $(OBJS) + $(CC) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@ + +foo.o bar.o: foo.h + +clean: + rm -f $(OBJS) foo +.Ed +. +.Sh AUTHORS +.An Mt june@causal.agency +. +.Pp +This document is produced from +.Xr mdoc 7 +source available from +.Lk https://git.causal.agency/src/tree/www/text.causal.agency diff --git a/www/text.causal.agency/002-writing-mdoc.7 b/www/text.causal.agency/002-writing-mdoc.7 new file mode 100644 index 00000000..b377d364 --- /dev/null +++ b/www/text.causal.agency/002-writing-mdoc.7 @@ -0,0 +1,138 @@ +.Dd September 27, 2018 +.Dt WRITING-MDOC 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm Writing mdoc +.Nd semantic markup +. +.Sh DESCRIPTION +I recently learned how to write man pages +so that I could document +a bunch of little programs I've written. +Modern man pages are written in +.Xr mdoc 7 , +whose documentation is also available from +.Lk http://mandoc.bsd.lv . +. +.Pp +.Xr mdoc 7 +differs from many other markup languages +by providing +.Dq semantic markup +rather than just +.Dq physical markup. +What this means is that +the markup indicates what something is, +not how to format it. +For example, +the +.Ql \&Ar +macro is used to indicate +command-line arguments +rather than one of the macros +for bold, italic or underline. +This frees each author of having to choose +and enables consistent presentation +across different man pages. +. +.Pp +Another advantage of semantic markup +is that information can be extracted from it. +For example, +.Xr makewhatis 8 +can easily extract the name and short description +from each man page +thanks to the +.Ql \&Nm +and +.Ql \&Nd +macros. +I use the same information +to generate an Atom feed for these documents, +though in admittedly a much less robust way than +.Xr mandoc 1 . +. +.Pp +When it comes to actually writing +.Xr mdoc 7 , +it can take some getting used to. +The language is of +.Xr roff 7 +lineage +so its syntax is very particular. +Macros cannot appear inline, +but must start on new lines +beginning with +.Ql \&. . +Sentences should likewise +always start on a new line. +Since I'm in the habit of writing with +semantic line breaks, +I actually find these requirements +fit in well. +. +.Pp +The more frustrating syntax limitation to me +is the rule against empty lines. +Without them, +it can be quite difficult to edit a lengthy document. +Thankfully, +lines with only a +.Ql \&. +on them are allowed, +but this still causes visual noise. +To alleviate that, +I have a +.Xr vim 1 +syntax file for +.Xr mdoc 7 +which conceals the lone dots: +. +.Bd -literal -offset indent +if exists("b:current_syntax") + finish +endif + +runtime! syntax/nroff.vim +unlet! b:current_syntax + +setlocal sections+=ShSs +syntax match mdocBlank /^\\.$/ conceal +setlocal conceallevel=2 + +let b:current_syntax = "mdoc" +.Ed +. +.Pp +It also adds the +.Xr mdoc 7 +section header and subsection header macros to the +.Cm sections +option to make +.Xr vim 1 Ap s +.Ic { +and +.Ic } +motions +aware of them. +. +.Pp +With that, +I've found writing man pages pleasant and rewarding. +I've started writing other documents with +.Xr mdoc 7 +as well, +as you can see here. +. +.Sh SEE ALSO +.Lk http://rhodesmill.org/brandon/2012/one-sentence-per-line/ "Semantic Linefeeds" +. +.Sh AUTHORS +.An Mt june@causal.agency +. +.Pp +This document is produced from +.Xr mdoc 7 +source available from +.Lk https://git.causal.agency/src/tree/www/text.causal.agency diff --git a/www/text.causal.agency/003-pleasant-c.7 b/www/text.causal.agency/003-pleasant-c.7 new file mode 100644 index 00000000..16030b7e --- /dev/null +++ b/www/text.causal.agency/003-pleasant-c.7 @@ -0,0 +1,120 @@ +.Dd September 30, 2018 +.Dt PLEASANT-C 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm Pleasant C +.Nd it's good, actually +. +.Sh DESCRIPTION +I've been writing a lot of C lately +and actually find it very pleasant. +I want to talk about some of its ergonomic features. +These are C99 features unless otherwise noted. +. +.Ss Initializer syntax +Struct and union initializer syntax +is well generalized. +Designators can be chained, +making initializing nested structs easy, +and all uninitialized fields are zeroed. +. +.Bd -literal -offset indent +struct { + struct pollfd fds[2]; +} loop = { + .fds[0].fd = STDIN_FILENO, + .fds[1].fd = STDOUT_FILENO, + .fds[0].events = POLLIN, + .fds[1].events = POLLOUT, +}; +.Ed +. +.Ss Variable-length arrays +VLAs can be multi-dimensional, +which can avoid manual stride multiplications +needed to index a flat +.Xr malloc 3 Ap d +array. +. +.Bd -literal -offset indent +uint8_t glyphs[len][height][width]; +fread(glyphs, height * width, len, stdin); +.Ed +. +.Ss Incomplete array types +The last field of a struct can be an +.Dq incomplete +array type, +which means it doesn't have a length. +A variable amount of space for the struct can be +.Xr malloc 3 Ap d , +or the struct can be used as +a sort of pointer with fields. +. +.Bd -literal -offset indent +struct Line { + enum Filter type; + uint8_t data[]; +} *line = &png.data[1 + lineSize()]; +.Ed +. +.Ss Anonymous struct and union fields (C11) +Members of structs or unions +which are themselves structs or unions +can be unnamed. +In that case, +each of the inner fields +is treated as a member of the outer struct or union. +This makes working with tagged unions nicer. +. +.Bd -literal -offset indent +struct Message { + enum { Foo, Bar } type; + union { + uint8_t foo; + uint32_t bar; + }; +} msg = { .type = Foo, .foo = 0xFF }; +.Ed +. +.Ss Static assert (C11) +Assertions can be made at compile time. +Most useful for checking sizes of structs. +. +.Bd -literal -offset indent +static_assert(13 == sizeof(struct PNGHeader), "PNG IHDR size"); +.Ed +. +.Ss Leading-break switch +This one is just an odd style choice +I came across that C happens to allow. +To prevent accidental fall-through +in switch statements, +you can put breaks before the case labels. +. +.Bd -literal -offset indent +while (0 < (opt = getopt(argc, argv, "h:w:"))) { + switch (opt) { + break; case 'h': height = optarg; + break; case 'w': width = optarg; + break; default: return EX_USAGE; + } +} +.Ed +. +.Sh AUTHORS +.An Mt june@causal.agency +. +.Pp +This document is produced from +.Xr mdoc 7 +source available from +.Lk https://git.causal.agency/src/tree/www/text.causal.agency +. +.Sh CAVEATS +This isn't meant to be advice. +It's just how I like to write C, +and I don't +.Dq ship +software in C. diff --git a/www/text.causal.agency/004-uloc.7 b/www/text.causal.agency/004-uloc.7 new file mode 100644 index 00000000..edd78d80 --- /dev/null +++ b/www/text.causal.agency/004-uloc.7 @@ -0,0 +1,64 @@ +.Dd December 14, 2018 +.Dt ULOC 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm ULOC +.Nd unique lines of code +. +.Sh DESCRIPTION +There are many tools available +which measure SLOC: source lines of code. +These tools are strangely complex +for what they intend to do, +which is to estimate the relative sizes of projects. +They perform some amount of parsing +in order to discount comments in various languages, +and for reasons unknown each format their ouput +in some oddly encumbered way. +. +.Pp +I propose a much simpler method +of estimating relative sizes of projects: +unique lines of code. +ULOC can be calculated with standard tools as follows: +. +.Bd -literal -offset indent +sort -u *.h *.c | wc -l +.Ed +. +.Pp +In my opinion, +the number this produces +should be a better estimate of +the complexity of a project. +Compared to SLOC, +not only are blank lines discounted, +but so are close-brace lines +and other repetitive code +such as common includes. +On the other hand, +ULOC counts comments, +which require just as much maintenance +as the code around them does, +while avoiding inflating the result +with license headers which appear in every file, +for example. +. +.Pp +It can also be amusing +to read all of your code sorted alphabetically. +. +.Sh AUTHORS +.An Mt june@causal.agency +. +.Pp +This document is produced from +.Xr mdoc 7 +source available from +.Lk https://git.causal.agency/src/tree/www/text.causal.agency +. +.Sh CAVEATS +Estimates such as these +should not be used for decision making +as if they were data. diff --git a/www/text.causal.agency/005-testing-c.7 b/www/text.causal.agency/005-testing-c.7 new file mode 100644 index 00000000..d0c636ff --- /dev/null +++ b/www/text.causal.agency/005-testing-c.7 @@ -0,0 +1,73 @@ +.Dd December 21, 2018 +.Dt TESTING-C 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm Testing C +.Nd a simple unit testing setup +. +.Sh DESCRIPTION +This is a simple approach +to unit testing in C +that I've used in a couple projects. +At the bottom of a C file +with some code I want to test, +I add: +. +.Bd -literal -offset indent +#ifdef TEST +#include <assert.h> + +int main(void) { + assert(...); + assert(...); +} + +#endif +.Ed +. +.Pp +This file normally produces a +.Pa .o +to be linked into the main binary. +For testing, +I produce separate binaries +and run them with +.Xr make 1 : +. +.Bd -literal -offset indent +TESTS = foo.t bar.t + +\&.SUFFIXES: .t + +\&.c.t: + $(CC) $(CFLAGS) -DTEST $(LDFLAGS) $< $(LDLIBS) -o $@ + +test: $(TESTS) + set -e; $(TESTS:%=./%;) +.Ed +. +.Pp +Note that the test binaries +aren't linked with the rest of the code, +so there is potential for simple stubbing or mocking. +. +.Pp +To get the best output +from C's simple +.Xr assert 3 , +it's best to assert the result +of a helper function +which takes the expected output +and the test input, +rather than calling +.Xr assert 3 +inside the helper function. +This way, +the message printed by the assert failure +contains a useful line number +and the expected output +rather than just variable names. +. +.Sh AUTHORS +.An Mt june@causal.agency diff --git a/www/text.causal.agency/006-some-libs.7 b/www/text.causal.agency/006-some-libs.7 new file mode 100644 index 00000000..5af65404 --- /dev/null +++ b/www/text.causal.agency/006-some-libs.7 @@ -0,0 +1,96 @@ +.Dd December 11, 2019 +.Dt SOME-LIBS 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm Some Libraries +.Nd good ones +. +.Sh DESCRIPTION +This is a little list of C libraries +I've had good experiences using. +. +.Bl -tag -width Ds +.It Fl lcurl +The library behind the +.Xr curl 1 +command. +It downloads or uploads things on the internet +through a number of protocols, +not just HTTP. +It has an easy-to-use library API, +appropriately named +.Xr libcurl-easy 3 . +I've used it to implement a +.Lk https://causal.agency/bin/title.html "page title fetcher" . +. +.It Fl lcurses +Okay so this one really isn't great. +Its interfaces can seem archaic +and its documentation is often poor. +However, it gets the job done +and is commonly available pretty much everywhere. +Interesting to note that +.Nx +uses its own implementation of curses +that is not GNU ncurses, +unlike +.Fx . +. +.It Fl ledit +This is a BSD line editing library, +similar to GNU readline. +It supports right-aligned prompts, +which I prefer for variable-length +information in shells. +. +.It Fl lkcgi +A CGI and FastCGI library +for web applications in C. +Don't worry, +it isolates HTTP parsing and input validation +from application logic +in sandboxed processes. +I think it's an excellent example +of how to design an API for C. +I used it to implement the +.Lk https://ascii.town/explore.html "torus web viewer" . +. +.It Fl lsqlite3 +An embedded relational database engine. +It's amazing what you can do with this, +and it's super easy to use! +My one gripe with it is that the library and SQL documentation +are not available as +.Xr man 1 +pages. +I'm currently working on a project using SQLite, +but it hasn't gotten very far yet. +. +.It Fl ltls +This is a new library in LibreSSL +which provides a much simpler interface for TLS sockets +compared to +.Fl lssl . +It's much more like what you'd expect +from other TLS socket wrappers, +with calls like +.Xr tls_connect 3 , +.Xr tls_read 3 +and +.Xr tls_write 3 . +I've used this for IRC clients, bouncers and bots. +. +.It Fl lz +An implementation of the DEFLATE compression algorithm +and gzip format. +It's all documented in comments in +.In zlib.h , +which isn't bad, +but for my own use I copied the docs into +.Lk https://code.causal.agency/june/zlib-man-pages "manual pages" . +I've used this for decoding and encoding PNG images. +.El +. +.Sh AUTHORS +.An June Bug Aq Mt june@causal.agency diff --git a/www/text.causal.agency/007-cgit-setup.7 b/www/text.causal.agency/007-cgit-setup.7 new file mode 100644 index 00000000..44fb436a --- /dev/null +++ b/www/text.causal.agency/007-cgit-setup.7 @@ -0,0 +1,271 @@ +.Dd December 15, 2019 +.Dt CGIT-SETUP 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm cgit setup +.Nd configuration notes +. +.Sh DESCRIPTION +I just set up cgit on +.Lk https://git.causal.agency +to replace an instance of gitea. +After 30 days of uptime, +gitea had accumulated over 11 hours of CPU time +and was using hundreds of megabytes of memory. +cgit is much more lightweight +and much more in line with my aesthetic. +I'm documenting how I set it up here +mostly to remind myself in the future. +. +.Ss slowcgi +cgit is CGI software, +but +.Xr nginx 8 +only supports FastCGI. +I used +.Xr slowcgi 8 +as a compatibility layer +by adding the following to +.Pa /etc/rc.conf : +.Bd -literal -offset indent +slowcgi_enable="YES" +slowcgi_flags="-p / -s /var/run/slowcgi.sock" +.Ed +. +.Ss nginx +I added the following in a new +.Cm server +block to +.Pa /usr/local/etc/nginx/nginx.conf : +.Bd -literal -offset indent +root /usr/local/www/cgit; +location / { + try_files $uri @cgit; +} +location @cgit { + fastcgi_pass unix:/var/run/slowcgi.sock; + fastcgi_param SCRIPT_FILENAME $document_root/cgit.cgi; + fastcgi_param SCRIPT_NAME /; + fastcgi_param PATH_INFO $uri; + fastcgi_param QUERY_STRING $query_string; + fastcgi_param REQUEST_METHOD $request_method; + fastcgi_param CONTENT_TYPE $content_type; + fastcgi_param CONTENT_LENGTH $content_length; + fastcgi_param HTTPS $https if_not_empty; + fastcgi_param SERVER_PORT $server_port; + fastcgi_param SERVER_NAME $server_name; +} +.Ed +. +.Pp +The +.Cm try_files +directive causes +.Xr nginx 8 +to first try to serve static files from +.Pa /usr/local/www/cgit +before passing anything else on to FastCGI. +. +.Pp +The +.Va SCRIPT_FILENAME +parameter tells +.Xr slowcgi 8 +the path of the CGI binary to run. +Setting +.Va SCRIPT_NAME +to +.Pa / +tells cgit its root URL +and avoids it using query strings for everything. +. +.Ss cgit +cgit doesn't provide any configuration to start from, +so you have to just read +.Xr cgitrc 5 . +I added the following to +.Pa /usr/local/etc/cgitrc : +.Bd -literal -offset indent +cache-size=1024 +clone-url=https://$HTTP_HOST/$CGIT_REPO_URL +snapshots=tar.gz zip +remove-suffix=1 +enable-git-config=1 +scan-path=/home/june/pub +.Ed +. +.Pp +The +.Cm cache-size +option enables caching, +which by default is stored in +.Pa /var/cache/cgit , +so I made sure that directory exists +and is writable by the +.Sy www +user. +The +.Cm clone-url +option sets the clone URL to advertise. +cgit will automatically serve git over HTTP. +The +.Cm snapshots +option makes tarballs available for tags and commits. +. +.Pp +The +.Cm scan-path +option causes cgit to scan the given path +for git repositories. +I'm putting mine in +.Pa ~/pub . +The +.Cm remove-suffix +option causes cgit to remove the +.Pa .git +suffix from the URLs it uses +for the repositories it finds, +so that +.Pa ~/pub/pounce.git +is served at +.Pa /pounce . +The +.Cm enable-git-config +option allows controlling some cgit options +from the +.Xr git-config 1 +of each repository. +See +.Sx git +below. +. +.Pp +I also set up a filter to render +.Xr mdoc 7 +files +and do syntax highlighting +by adding the following to +.Pa cgitrc : +.Bd -literal -offset indent +readme=:README.7 +readme=:README +about-filter=/usr/local/libexec/cgit-filter +source-filter=/usr/local/libexec/cgit-filter +.Ed +. +.Pp +The +.Cm readme +options tell cgit which files to look for +to render the +.Dq about +page. +The colon prefix causes it to look for them +in the git tree. +The +.Pa /usr/local/libexec/cgit-filter +script contains the following: +.Bd -literal -offset indent +#!/bin/sh +case "$1" in + (*.[1-9]) + /usr/bin/mandoc -T utf8 | /usr/local/libexec/ttpre + ;; + (*) + exec /usr/local/libexec/hi -t -n "$1" -f html -o anchor + ;; +esac +.Ed +. +.Pp +Filter scripts are run with the filename as their first argument +and the contents of the file on standard input. +The +.Xr ttpre 1 +command is my own utility to convert +.Xr man 1 +output to HTML. +The +.Xr hi 1 +command is my own +.Lk https://causal.agency/bin/hi.html "syntax highlighter" . +. +.Ss git +I create my repositories in +.Pa ~/pub +with +.Ql git init --bare +and use +.Pa git.causal.agency:pub/example.git +locally as the remote. +Descriptions are set by editing the +.Pa description +file in each repository. +The section and homepage can be set with +.Xr git-config 1 +through the keys +.Cm cgit.section +and +.Cm cgit.homepage , +respectively, +thanks to the +.Cm enable-git-config +option above. +. +.Ss Redirects +I added the following to the +.Cm server +block that used to serve gitea in +.Pa nginx.conf : +.Bd -literal -offset indent +location ~* /june/([^.]+)[.]git(.*) { + return 301 https://git.causal.agency/$1$2?$query_string; +} +location ~* /june/([^/]+) { + return 301 https://git.causal.agency/$1; +} +location / { + return 301 https://git.causal.agency; +} +.Ed +. +.Pp +This redirects any links to my gitea repos +to the corresponding repo in cgit. +The first +.Sy location +block also redirects gitea HTTP clone URLs to cgit +so that +.Xr git-pull 1 +continues to work on existing clones. +. +.Ss Update: fast HTTPS clones +Someone pointed out that cloning my repos +over HTTPS was incredibly slow, +and this is because cgit only implements the +.Dq dumb +HTTP git transport. +To speed up cloning, +I send the URLs used by the +.Dq smart +HTTP transport to +.Xr git-http-backend 1 +instead: +.Bd -literal -offset indent +location ~ /.+/(info/refs|git-upload-pack) { + fastcgi_pass unix:/var/run/slowcgi.sock; + fastcgi_param SCRIPT_NAME /usr/local/libexec/git-core/git-http-backend; + fastcgi_param GIT_HTTP_EXPORT_ALL 1; + fastcgi_param GIT_PROJECT_ROOT /home/june/pub; + include fastcgi_params; +} +.Ed +. +.Pp +I factored out the FastCGI parameters +I'm using with cgit +to be included here as well. +. +.Sh AUTHORS +.An June Bug Aq Mt june@causal.agency diff --git a/www/text.causal.agency/008-how-irc.7 b/www/text.causal.agency/008-how-irc.7 new file mode 100644 index 00000000..aba1bbf9 --- /dev/null +++ b/www/text.causal.agency/008-how-irc.7 @@ -0,0 +1,193 @@ +.Dd March 8, 2020 +.Dt HOW-IRC 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm How I Relay Chat +.Nd in code +. +.Sh DESCRIPTION +I've been writing a lot of IRC software lately +.Pq Sx SEE ALSO , +and developed some nice code patterns +that I've been reusing. +Here they are. +. +.Ss Parsing +I use fixed size buffers almost everywhere, +so it's necessary to know IRC's size limits. +A traditional IRC message is a maximum of 512 bytes, +but the IRCv3 message-tags spec adds +(unreasonably, in my opinion) +8191 bytes for tags. +IRC messages also have a maximum of 15 command parameters. +.Bd -literal -offset indent +enum { MessageCap = 8191 + 512 }; +enum { ParamCap = 15 }; +.Ed +. +.Pp +If I'm using tags, +I'll use X macros +to declare the set I care about. +X macros are a way of maintaining parallel arrays, +or in this case an enum and an array. +.Bd -literal -offset indent +#define ENUM_TAG \e + X("msgid", TagMsgid) \e + X("time", TagTime) + +enum Tag { +#define X(name, id) id, + ENUM_TAG +#undef X + TagCap, +}; + +static const char *TagNames[TagCap] = { +#define X(name, id) [id] = name, + ENUM_TAG +#undef X +}; +.Ed +. +.Pp +The TagNames array is used by the parsing function +to assign tag values into the message structure, +which looks like this: +.Bd -literal -offset indent +struct Message { + char *tags[TagCap]; + char *nick; + char *user; + char *host; + char *cmd; + char *params[ParamCap]; +}; +.Ed +. +.Pp +I'm a fan of using +.Xr strsep 3 +for simple parsing. +Although it modifies its input +(replacing delimiters with NUL terminators), +since the raw message is in a static buffer, +it is ideal for so-called zero-copy parsing. +I'm not going to include the whole parsing function here, +but I will at least include the part that many get wrong, +which is dealing with the colon-prefixed trailing parameter: +.Bd -literal -offset indent +msg.cmd = strsep(&line, " "); +for (int i = 0; line && i < ParamCap; ++i) { + if (line[0] == ':') { + msg.params[i] = &line[1]; + break; + } + msg.params[i] = strsep(&line, " "); +} +.Ed +. +.Ss Handling +To handle IRC commands and replies +I add handler functions to a big array. +I usually have some form of helper as well +to check the number of expected parameters. +.Bd -literal -offset indent +typedef void HandlerFn(struct Message *msg); + +static const struct Handler { + const char *cmd; + HandlerFn *fn; +} Handlers[] = { + { "001", handleReplyWelcome }, + { "PING", handlePing }, + { "PRIVMSG", handlePrivmsg }, +}; +.Ed +. +.Pp +Since I keep these arrays sorted anyway, +I started using the standard +.Xr bsearch 3 +function, +but a basic for loop probably works just as well. +I do wish I could compile-time assert +that the array really is sorted, though. +.Bd -literal -offset indent +static int compar(const void *cmd, const void *_handler) { + const struct Handler *handler = _handler; + return strcmp(cmd, handler->cmd); +} + +void handle(struct Message msg) { + if (!msg.cmd) return; + const struct Handler *handler = bsearch( + msg.cmd, + Handlers, ARRAY_LEN(Handlers), + sizeof(*handler), compar + ); + if (handler) handler->fn(&msg); +} +.Ed +. +.Ss Capabilities +For IRCv3 capabilties +I use X macros again, +this time with another handy macro +for declaring bit flag enums. +.Bd -literal -offset indent +#define BIT(x) x##Bit, x = 1 << x##Bit, x##Bit_ = x##Bit + +#define ENUM_CAP \e + X("message-tags", CapMessageTags) \e + X("sasl", CapSASL) \e + X("server-time", CapServerTime) + +enum Cap { +#define X(name, id) BIT(id), + ENUM_CAP +#undef X +}; + +static const char *CapNames[] = { +#define X(name, id) [id##Bit] = name, + ENUM_CAP +#undef X +}; +.Ed +. +.Pp +The +.Fn BIT +macro declares, for example, +.Dv CapSASL +as the bit flag and +.Dv CapSASLBit +as the corresponding index. +The +.Vt "enum Cap" +is used as a set, +for example checking if SASL is enabled with +.Ql caps & CapSASL . +. +.Pp +These patterns are serving my IRC software well, +and my IRC projects are serving me well. +It is immensely satisfying +to be (near) constantly using software +that I wrote myself and am happy with, +regardless of how niche it may be. +. +.Sh SEE ALSO +.Bl -item -compact +.It +.Lk https://git.causal.agency/pounce/about "IRC bouncer" +.It +.Lk https://git.causal.agency/litterbox/about "IRC logger" +.It +.Lk https://git.causal.agency/catgirl/about "IRC client" +.El +. +.Sh AUTHORS +.An June Bug Aq Mt june@causal.agency diff --git a/www/text.causal.agency/009-casual-update.7 b/www/text.causal.agency/009-casual-update.7 new file mode 100644 index 00000000..0548436a --- /dev/null +++ b/www/text.causal.agency/009-casual-update.7 @@ -0,0 +1,127 @@ +.Dd May 6, 2020 +.Dt CASUAL-UPDATE 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm casual update +.Nd software developments +. +.Sh DESCRIPTION +I've been figuring out more of IMAP +and Internet Messages in general +while working on a new project +so I've revisited some older ones. +I've copied my somewhat more proper +IMAP parsing code into them, +so they should be more robust. +. +.Pp +.Xr imbox 1 +is my tool to export messages +in mboxrd format directly from IMAP. +It's mostly for applying patches sent by email +without having any kind of local mail setup. +For that, +it includes the +.Xr git-fetch-email 1 +wrapper which works very similarly to +.Xr git-send-email 1 . +I learned by reading the source of +.Xr git-subtree 1 +that +.Xr git-rev-parse 1 +can be used by shell scripts +to parse long options, +so I added those. +I also added the +.Fl Fl apply +flag to automatically pipe to +.Xr git-am 1 +with the right flags for mboxrd. +. +.Pp +.Xr notemap 1 +is a tool for mirroring text files +to an IMAP Notes mailbox, +which is used by FastMail's web UI +and the macOS/iOS Notes app. +Its original parsing code +was particularly ad-hoc. +Since I've now learned +how UTF-8 headers are encoded, +I updated it to properly encode +the file name in the Subject line. +. +.Pp +I also got distracted by +a conversation about UNIX-domain sockets +where I was comparing the macOS and FreeBSD +.Xr unix 4 +pages and the Linux +.Xr unix 7 +page. +This lead me to make +.Xr exman 1 , +a tool to locally install and read +manual pages for Linux, POSIX, +.Fx , +.Nx +and +.Ox . +I've already gotten quite a bit of use out of it. +. +.Pp +In yet another IRC distraction, +I was talking about some further plans for my IRC software, +and realized it might be time to write +my future projects list down. +I opened a +.Pa .plan +file, +immediately wondered how anyone can write plain text, +then switched to a +.Pa plan.7 +file. +There's nothing I won't use +.Xr mdoc 7 +for. +After a little setup, +I can now be fingered, +and make jokes about this silly little protocol +from the days of old. +.Xr finger 1 Ap s +default output fills me with joy: +.Bd -unfilled -offset indent +No Mail. +No Plan. +.Ed +. +.Pp +And speaking of IRC and plans, +I've been meaning to tag +.Xr catgirl 1 +version 1.0 for a while now. +I've been using it as my main client +and my commits to it have really slowed down. +When I do tag it, +I'm planning on writing another post +about my whole +.Dq suite +of IRC software +and how the parts work together. +Watch this space. +. +.Sh SEE ALSO +.Bl -item -compact +.It +.Lk https://git.causal.agency/imbox "imbox" +.It +.Lk https://git.causal.agency/notemap "notemap" +.It +.Lk https://git.causal.agency/exman "exman" +.It +.Lk https://git.causal.agency/catgirl "catgirl" +.El +. +.Sh AUTHORS +.An June Bug Aq Mt june@causal.agency diff --git a/www/text.causal.agency/010-irc-suite.7 b/www/text.causal.agency/010-irc-suite.7 new file mode 100644 index 00000000..b54adf3d --- /dev/null +++ b/www/text.causal.agency/010-irc-suite.7 @@ -0,0 +1,409 @@ +.Dd June 19, 2020 +.Dt IRC-SUITE 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm IRC suite +.Nd my own IRC software +. +.Sh DESCRIPTION +Over the past months +.Po +eight of them, according to +.Xr git-log 1 +.Pc +I developed a new +.Dq suite +of IRC software +that I now use full-time, +consisting of a bouncer, +a new logging and search solution, +and a terminal client. +These new programs share some characteristics: +they are all TLS-only +and use the libtls API from LibreSSL, +they can all be entirely configured from the command line +or with equivalent configuration files, +they are all designed as +a one process to one IRC connection mapping, +and they all take advantage of IRCv3 features. +. +.Pp +For context, +I was previously running +the znc IRC bouncer +and using the Textual IRC client +with its plain text logs. +I also continue to use +the Palaver IRC client for iOS. +. +.Ss Background +A bouncer is a piece of server software +that stays connected to IRC at all times +and acts as a relay +between your client and the IRC server. +When the client is disconnected, +the bouncer buffers incoming messages +to send to the client when it reconnects. +. +.Pp +Aside from this, +bouncers have another advantage: +client multiplexing. +Several clients, +for instance on different computers +or a phone, +should be able to connect to the same bouncer, +and send and receive messages under the same nick. +Unfortunately, +znc does not handle this use-case well at all. +Out of the box it offers two options: +either any client connection totally clears the buffer, +causing other clients to miss chat history; +or the buffer is never cleared, +causing every client connection +to be repeatedly spammed with redundant history. +There is also a znc wiki page +that suggests one way to solve this issue +is to connect znc to itself multiple times over. +Yikes. +. +.Ss pounce +My dissatisfaction with +connecting multiple clients to znc +directly motivated me to start working +on a new multi-client-focused IRC bouncer. +The result is +.Xr pounce 1 , +based on a rather straightforward +single-producer (the IRC server) +multiple-consumer (each IRC client) +ring buffer. +Each client has its own +independent position in the buffer +so can properly be brought up to date +whenever it connects. +. +.Pp +Additionally, +by assuming support for the IRCv3 +.Sy server-time +extension, +all IRC events can be accurately +relayed to clients at any time, +and the internals of +.Xr pounce 1 +can be kept very simple. +In fact, +it completely avoids parsing most IRC messages, +simply pushing them into the buffer +with an associated timestamp. +. +.Pp +The usernames sent by clients during registration +are used as opaque identifiers for buffer consumers. +This was chosen since most clients +can be configured to send an arbitrary username, +and those that don't often default +to the name of the client itself, +making it an appropriate identifier. +. +.Pp +Later, +I added a way for clients +to be informed of their own buffer positions +using a vendor-specific IRCv3 capability. +This means a client +can save the position +of the last message it actually received, +and request to set its position +when it reconnects, +ensuring no messages are lost +to network issues +or software crashes. +. +.Ss calico +Due to the simple design of mapping +one process to one IRC (server) connection, +it is necessary to run several instances of +.Xr pounce 1 . +Initially I simply used different ports for each, +but as I connected to more networks +and even ran some instances for friends, +it became less feasible. +. +.Pp +The solution I came up with +was to dispatch incoming connections +using Server Name Indication, or SNI. +This way, +multiple domains pointing to the same host +could be used with only one port +to connect to different instances of +.Xr pounce 1 . +For example, +I use a +.Li *.irc.causal.agency +wildcard DNS entry +and a subdomain for each IRC network, +all on port 6697. +. +.Pp +The +.Xr calico 1 +daemon included with pounce +accomplishes this dispatch +using the +.Dv MSG_PEEK +flag of +.Xr recvmsg(2) +on incoming connections. +Since SNI is immediately sent by TLS clients +as part of the ClientHello message in clear-text, +it can be processed +without doing any actual TLS. +The connection itself is then +sent to the corresponding +.Xr pounce 1 +instance +over UNIX-domain socket, +which handles TLS as normal. +This means that +.Xr calico 1 +and +.Xr pounce 1 +operate entirely independently of each other. +. +.Ss litterbox +Based on the multiple-consumer ring buffer design, +I realized it would be easy +to implement additional functionality +as independent purpose-built clients +which connect to +.Xr pounce 1 +alongside regular clients. +This could allow dedicated OTR or DCC software +to operate in parallel with a basic client, +or for more passive software +to provide notifications +or dedicated logging. +. +.Pp +For the latter, +I wanted to do better than +plain text log files. +.Xr grep 1 +over files works fine, +but search could be faster and smarter, +and the text format is +more lossy and less structured +than I'd like it to be. +Conveniently, +SQLite provides an extension +(actually two) +for full-text search. +. +.Pp +The litterbox project +is my dedicated logging solution +using SQLite FTS5. +It consists of three tools: +the +.Xr litterbox 1 +daemon itself which connects to pounce +and logs messages to SQLite, +the +.Xr scoop 1 +command line query tool, +and the +.Xr unscoop 1 +plain text import tool. +The +.Xr scoop 1 +tool constructs SQL queries +and formats the results for viewing, +with coloured nicks +and piped to a pager +by default. +. +.Pp +The +.Xr litterbox 1 +daemon +can also provide a simple +.Dq online +.Pq over IRC +search query interface +to other connected clients. +The simplest way to allow different +.Xr pounce 1 +clients to talk to each other +was to route private messages to self +internally without sending them to the IRC server. +So from any client +I can simply message myself +a full-text search query +and +.Xr litterbox 1 +responds with the results. +. +.Pp +Along with routing self-messages, +.Xr pounce 1 +also provides a vendor-specific IRCv3 capability +for passive clients such as +.Xr litterbox 1 +to indicate that they should not influence +the automatic away status, +which is normally only set +when no clients are connected. +. +.Pp +An advantage of this architecture +of dedicated clients +rather than bouncer modules +is that they need not run +on the same host. +I run my bouncers on a VPS, +but I'd rather not store my private logs there, +so +.Xr litterbox 1 +runs instead on a Raspberry Pi +in my apartment. +Also, +since it is essentially +just a regular IRC bot, +it could be used independently +for keeping public logs for a channel. +. +.Ss catgirl +There's not really that much to say +about the client, +.Xr catgirl 1 . +Of the three projects +it contains the most code +but is also the least interesting, +in my opinion. +It just does what I want a client to do, +and gets the details right. +. +.Pp +Tab complete is ordered by most recently seen or used, +and completing several nicks +inserts commas between them +as well as the colon following the final nick. +In the input line, +the prompt is updated +to reflect whether the input +will be interpreted as a command or as a message. +Messages are automatically scanned for URLs, +which can be opened or copied with commands +specifying the nick or a substring of the URL. +. +.Pp +Scrolling in a window creates a split view, +keeping the latest messages visible. +Nick colours are based instead on usernames, +keeping them more stable across renames, +and mentions in messages are coloured +to make the conversation easier to follow. +The visibility of ignored messages +can be toggled at any time. +Channels can be muted +so their activity is hidden +from the status line +unless you are pinged. +. +.Pp +.Xr catgirl 1 +is configured entirely on the command line +or in equivalent simple configuration files. +There's no dynamic manipulation of state +using complex +.Ql / +commands like in some other clients. +. +.Pp +The major caveat is that +.Xr catgirl 1 +connects to only one network at a time. +This keeps the configuration, the interface +and the code much simpler. +.Xr tmux 1 , +.Xr screen 1 +or a tabbed terminal emulator +are good options to run several instances. +. +.Pp +If you're interested in giving +.Xr catgirl 1 +a quick (and necessarily limited) try, +you can +.Li ssh chat@ascii.town . +. +.Ss Future +I think I'm done with IRC software for now. +As mentioned above, +there are a few more pieces +that could fit in to this setup, +but I don't really want or need them right now. +One thing I definitely want to try +at some point +is adding a litterbox component +to index the contents of URLs +to make finding previously shared links easier. +. +.Pp +If you try any of this software +and have feedback, +let me know in +.Li #ascii.town +on freenode +or by email. +And of course, +patches are always welcome. +. +.Ss Update: scooper +Somehow I had the motivation +to create a web interface for litterbox: +.Xr scooper 1 . +It can be used either as CGI +or as a FastCGI worker, +and I used the excellent +.Xr kcgi 3 +library for it. +. +.Pp +The main advantage of this interface +is that you can click on a search result +to be brought to its context in the log viewer. +I also added an option to +.Xr litterbox 1 +to provide a corresponding scooper link +in response to its query interface. +. +.Pp +A small demo of scooper is hosted at +.Aq Lk "https://causal.agency/scooper/" . +It publicly logs the +.Li #litterbox +channel on freenode. +. +.Sh SEE ALSO +.Bl -item -compact +.It +.Lk "https://git.causal.agency/pounce" pounce +.It +.Lk "https://git.causal.agency/litterbox" litterbox +.It +.Lk "https://git.causal.agency/catgirl" catgirl +.It +.Lk "https://www.sqlite.org/fts5.html" "SQLite FTS5 Extension" +.It +.Lk "https://git.causal.agency/scooper" scooper +.It +.Lk "https://kristaps.bsd.lv/kcgi/" kcgi +.El +. +.Sh AUTHORS +.An June Bug Aq Mt june@causal.agency diff --git a/www/text.causal.agency/011-libretls.7 b/www/text.causal.agency/011-libretls.7 new file mode 100644 index 00000000..c29c325e --- /dev/null +++ b/www/text.causal.agency/011-libretls.7 @@ -0,0 +1,220 @@ +.Dd August 9, 2020 +.Dt LIBRETLS 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm LibreTLS +.Nd libtls for OpenSSL +. +.Sh DESCRIPTION +This is a sort of announcement post about LibreTLS, +my port of libtls from LibreSSL to OpenSSL. +If you've wanted to try any of my software +but have been unable to because of LibreSSL, +LibreTLS is an option that will likely work for you. +I'm including instructions +for building it and my IRC software +on Debian as an example, +since manually installing libraries +is less straightforward than it could be. +. +.Pp +libtls is +.Do +a new TLS library, +designed to make it easier to write foolproof applications +.Dc . +It was developed as part of LibreSSL, +.Ox Ap s +fork of OpenSSL, +and is implemented against their version of libssl. +It provides a nice high-level API +for TLS sockets, +with functions like +.Xr tls_connect 3 , +.Xr tls_read 3 +and +.Xr tls_write 3 . +This is a vast improvement over libssl's +confusing mess of an API! +Its relative obscurity is a real shame +for C programmers. +. +.Pp +An obvious cause of its obscurity +is that it is tied to LibreSSL. +Although LibreSSL is available +for platforms other than +.Ox , +it conflicts with OpenSSL +so is difficult to install alongside it +and is often not packaged at all. +Additionally, +even if a user manually installs LibreSSL, +libtls is likely not to work on some distros +due to its hardcoded CA bundle file path. +. +.Pp +Since libtls is implemented against libssl, +which originates in OpenSSL, +it should be possible to use libtls with it. +This is what I set out to do in LibreTLS. +I started by importing the sources +from a LibreSSL-portable release, +then worked on porting the portions +that were incompatible with OpenSSL. +. +.Pp +The simpler changes just involved +replacing internal struct field accesses +with public APIs. +libtls accesses libssl internals +using a hack to get the header files +to declare private struct fields, +and for basically no reason. +The bigger changes involved +reimplementing some functions +which only exist in LibreSSL, +but these were still quite small. +I also imported the necessary compatibility functions +from LibreSSL's libcrypto +and adapated the autotools build files +to produce only a libtls +which depends on OpenSSL. +. +.Pp +Along the way +I decided to make one small behavioural change +in order for LibreTLS to be more likely +to work for everyone. +I removed the hardcoded CA file path +and changed the default configuration +to use OpenSSL's default CA paths, +which include a CA directory. +This seems to be the preferred CA source +on systems such as Debian, +where the default CA file path doesn't exist. +. +.Pp +I think the reason LibreSSL +wants to avoid using a CA directory +is so that it can fully load the CA file +once before being sandboxed. +However, +using OpenSSL's default configuration, +the CA file will still be loaded immediately +if it exists. +If it doesn't exist, +sandboxed applications +will fail when trying to +load certificates from the directory, +but unsandboxed applications +will work just fine. +Since LibreSSL's libtls +would fail either way, +I think the new behaviour +is an improvement. +. +.Pp +Another advantage of separating libtls from LibreSSL +is that it is unencumbered by OpenSSL's +awkward double-license, +both of which are incompatible with the GPL. +libtls is all new ISC-licensed code, +and future versions of OpenSSL (3.0) +will be released under the Apache 2.0 license, +which is compatible with GPLv3. +In the future, +GPL software will be able to link with +libtls and OpenSSL without additional permissions. +. +.Pp +It's also worth noting that LibreSSL +likely will not be able to import any code +from future versions of OpenSSL, +since Apache 2.0 is on +.Ox Ap s +license shitlist. +LLVM is also slowly changing their license +to Apache 2.0, +so it'll be interesting to see what +.Ox +does. +. +.Ss Installing Manually +To install LibreTLS on Debian, +for example, +fetch a release tarball from +.Lk https://causal.agency/libretls/ +and install the build dependencies: +.Bd -literal -offset indent +sudo apt-get install build-essential libssl-dev pkgconf +.Ed +. +.Pp +.Xr pkgconf 1 +isn't a dependency of LibreTLS itself, +but it's how my software +configures its build +for a dependency on libtls. +The usual build steps +will install the library: +.Bd -literal -offset indent +\&./configure +make all +sudo make install +.Ed +. +.Pp +The library will be installed in +.Pa /usr/local/lib +by default, +and you need to make sure +the dynamic linker +will be able to find it there. +On Debian, +.Pa /usr/local/lib +already appears in +.Pa /etc/ld.so.conf.d/libc.conf , +but on other systems +you'll probably need to add it to either +.Pa /etc/ld.so.conf +or a new file such as +.Pa /etc/ld.so.conf.d/local.conf . +Once the library is installed +and the path is configured, +the linker cache needs to be refreshed: +.Bd -literal -offset indent +sudo ldconfig +.Ed +. +.Pp +You'll probably also need to set +.Ev PKG_CONFIG_PATH +for the configure scripts +of my software: +.Bd -literal -offset indent +PKG_CONFIG_PATH=/usr/local/lib/pkgconfig ./configure +.Ed +. +.Pp +On +.Fx , +LibreTLS and some of my IRC software +can be installed from my own +.Lk https://git.causal.agency/ports/ "ports tree" +. +.Sh SEE ALSO +.Bl -item -compact +.It +.Lk https://git.causal.agency/libretls/about LibreTLS +.It +.Lk https://man.openbsd.org/tls_init.3 "libtls API documentation" +.El +. +.Pp +Another alternative libtls implementation, +.Lk https://sr.ht/~mcf/libtls-bearssl/ "libtls-bearssl" +. +.Sh AUTHORS +.An June Bug Aq Mt june@causal.agency diff --git a/www/text.causal.agency/012-inability.7 b/www/text.causal.agency/012-inability.7 new file mode 100644 index 00000000..d352143b --- /dev/null +++ b/www/text.causal.agency/012-inability.7 @@ -0,0 +1,39 @@ +.Dd November 26, 2020 +.Dt INABILITY 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm Inability +.Nd losing the ability to create +. +.Sh DESCRIPTION +For often weeks, sometimes months at a time, +I lose the ability to write new code. +I can still make fixes +and little cleanups +in my existing projects, +but if I try to work on something new, +nothing happens. +I can't get anything done. +. +.Pp +I think it's now been +over 3 months +since I've created anything. +I don't know what to do about it. +In the past I've eventually +regained the ability to code, +but it's unclear to me how or why. +I also don't know what +I should be doing instead. +Writing code is the only hobby +I've ever really developed, +so without it I basically +don't do anything. +. +.Pp +Does this happen to anyone else? +How do you cope? +. +.Sh AUTHORS +.Mt june@causal.agency diff --git a/www/text.causal.agency/013-hot-tips.7 b/www/text.causal.agency/013-hot-tips.7 new file mode 100644 index 00000000..63b6e353 --- /dev/null +++ b/www/text.causal.agency/013-hot-tips.7 @@ -0,0 +1,156 @@ +.Dd December 2, 2020 +.Dt HOT-TIPS 7 +.Os "Causal Agency" +. +.Sh NAME +.Nm hot tips +.Nd from my files +. +.Sh DESCRIPTION +This is a short list of tips +from my configuration files and code +that might be useful. +. +.Ss Shell +.Bl -tag -width Ds +.It CDPATH=:~ +This is useful if you sometimes type, +for example, +.Ql cd src/bin +wanting to go to +.Pa ~/src/bin +but you aren't in +.Pa ~ . +If the path doesn't exist +in the current directory, +.Ic cd +will try it in +.Pa ~ +as well. +. +.It alias ls='LC_COLLATE=C ls' +This makes it so that +.Xr ls 1 +lists files in ASCIIbetical order, +which puts capitalized names like +.Pa README +and +.Pa Makefile +first. +. +.It git config --global commit.verbose true +Not shell but close enough. +This makes it so the entire diff is shown +below the usual summary +in the editor for a +.Xr git-commit(1) +message. +Useful for doing a quick review +of what you're committing. +.El +. +.Ss (neo)vim +.Bl -tag -width Ds +.It set inccommand=nosplit +This is the only +.Xr nvim 1 +feature I really care about +aside from the improved defaults. +This provides a live preview of what a +.Ic :s +substitution command will do. +It makes it much easier to +write complex substitutions. +. +.It nmap <leader>s vip:sort<CR> +This mapping sorts the lines of a paragraph, +or block of text separated by blank lines. +I use this a lot to sort +#include directives. +. +.It nmap <leader>S $vi{:sort<CR> +Similar to the last mapping, +this one sorts lines inside braces. +I use this to sort +switch statement cases +or array initializers. +. +.It nmap <leader>a m':0/^#include <<CR>:nohlsearch<CR>O#include < +I use this mapping to add new +#include directives, +usually followed by +.Ic <leader>s +and +.Ic '' +to sort them +and return to where I was. +. +.It nmap <leader>d :0delete<CR>:0read !date +'.Dd \e%B \e%e, \e%Y'<CR> +I use this to replace the first line of +.Xr mdoc 7 +files with the current date. +.El +. +.Ss C +.Bl -tag -width Ds +.It #define Q(...) #__VA_ARGS__ +This is what I've started using +to quote things like SQL statements +or HTML fragments in C. +Anything that happens to be valid C tokens, +which is most code, +can be quoted this way. +Macros are not expanded +inside the quoted part. +You can embed (matched) quotes +without having to escape them. +Whitespace gets collapsed, +so you can write nicely formatted multi-line SQL +that doesn't mess up your debug logging, +for example. +.Bd -literal -offset indent +const char *sql = Q( + INSERT OR IGNORE INTO names (nick, user, host) + VALUES (:nick, :user, :host); +); +.Ed +. +.It #define BIT(x) x##Bit, x = 1 << x##Bit, x##Bit_ = x##Bit +I use this macro to declare bitflag enums. +It takes advantage of +auto-incrementing enum items +so you don't need to set the values manually. +You also get constants +for both the bit index +and the flag value +for each item. +.Bd -literal -offset indent +enum Attr { + BIT(Bold), + BIT(Reverse), + BIT(Italic), + BIT(Underline), +}; +.Ed +.Pp +For example, +defines +.Sy ItalicBit = 2 +and +.Sy Italic = 1 << 2 . +Ignore the extraneous constants. +. +.It typedef int FnType(const char *str, size_t len); +You can just typedef function types! +It annoys me more than it probably should +that everyone writes ugly +function pointer typedefs. +Just stick +.Sy typedef +on the front of a function declaration +and use +.Vt FnType * . +.El +. +.Sh AUTHORS +.Mt june@causal.agency diff --git a/www/text.causal.agency/Makefile b/www/text.causal.agency/Makefile new file mode 100644 index 00000000..6a8fcc87 --- /dev/null +++ b/www/text.causal.agency/Makefile @@ -0,0 +1,31 @@ +WEBROOT = /usr/local/www/text.causal.agency + +TXTS += 001-make.txt +TXTS += 002-writing-mdoc.txt +TXTS += 003-pleasant-c.txt +TXTS += 004-uloc.txt +TXTS += 005-testing-c.txt +TXTS += 006-some-libs.txt +TXTS += 007-cgit-setup.txt +TXTS += 008-how-irc.txt +TXTS += 009-casual-update.txt +TXTS += 010-irc-suite.txt +TXTS += 011-libretls.txt +TXTS += 012-inability.txt +TXTS += 013-hot-tips.txt + +all: ${TXTS} + +.SUFFIXES: .7 .txt + +.7.txt: + mandoc -T utf8 $< | col -bx > $@ + +feed.atom: feed.sh ${TXTS} + sh feed.sh > feed.atom + +clean: + rm -f ${TXTS} feed.atom + +install: ${TXTS} feed.atom + install -p -m 644 ${TXTS} feed.atom ${WEBROOT} diff --git a/www/text.causal.agency/feed.sh b/www/text.causal.agency/feed.sh new file mode 100644 index 00000000..fe028621 --- /dev/null +++ b/www/text.causal.agency/feed.sh @@ -0,0 +1,55 @@ +#!/bin/sh +set -eu + +readonly Root='https://text.causal.agency' + +updated=$(date -u '+%FT%TZ') +cat <<-EOF + <?xml version="1.0" encoding="utf-8"?> + <feed xmlns="http://www.w3.org/2005/Atom"> + <title>Causal Agency</title> + <author><name>June</name><email>june@causal.agency</email></author> + <link href="${Root}"/> + <link rel="self" href="${Root}/feed.atom"/> + <id>${Root}/</id> + <updated>${updated}</updated> +EOF + +encode() { + sed ' + s/&/\&/g + s/</\</g + s/"/\"/g + ' "$@" +} + +for entry in *.7; do + txt="${entry%.7}.txt" + date=$(grep '^[.]Dd' "$entry" | cut -c 5-) + title=$(grep '^[.]Nm' "$entry" | cut -c 5- | encode) + summary=$(grep '^[.]Nd' "$entry" | cut -c 5- | encode) + published=$(date -ju -f '%B %d, %Y %T' "${date} 00:00:00" '+%FT%TZ') + mtime=$(stat -f '%m' "$entry") + updated=$(date -ju -f '%s' "$mtime" '+%FT%TZ') + cat <<-EOF + <entry> + <title>${title}</title> + <summary>${summary}</summary> + <link href="${Root}/${txt}"/> + <id>${Root}/${txt}</id> + <published>${published}</published> + <updated>${updated}</updated> + <content type="xhtml"> + <div xmlns="http://www.w3.org/1999/xhtml"> + EOF + printf '<pre>' + encode "$txt" + cat <<-EOF + </pre> + </div> + </content> + </entry> + EOF +done + +echo '</feed>' |
