diff options
Diffstat (limited to 'home')
| -rwxr-xr-x | home/.bin/bri.c | 77 | ||||
| -rwxr-xr-x | home/.bin/dtch.c | 254 | ||||
| -rwxr-xr-x | home/.bin/hnel.c | 115 | ||||
| -rwxr-xr-x | home/.bin/jrp.c | 273 | ||||
| -rwxr-xr-x | home/.bin/pbd.c | 136 | ||||
| -rwxr-xr-x | home/.bin/wake.c | 41 | ||||
| -rwxr-xr-x | home/.bin/watch.c | 100 | ||||
| -rwxr-xr-x | home/.bin/xx.c | 117 |
8 files changed, 0 insertions, 1113 deletions
diff --git a/home/.bin/bri.c b/home/.bin/bri.c deleted file mode 100755 index d085814b..00000000 --- a/home/.bin/bri.c +++ /dev/null @@ -1,77 +0,0 @@ -#if 0 -set -e -bin=$(dirname $0) -cc -Wall -Wextra -pedantic $@ -o $bin/bri $0 -sudo chown root:root $bin/bri -sudo chmod u+s $bin/bri -exit -#endif - -// Backlight brightness control. - -#include <dirent.h> -#include <err.h> -#include <errno.h> -#include <stdio.h> -#include <string.h> -#include <sysexits.h> -#include <unistd.h> - -static const char *CLASS = "/sys/class/backlight"; - -int main(int argc, char *argv[]) { - int error; - - if (argc < 2) errx(EX_USAGE, "usage: bri N | +... | -..."); - - error = chdir(CLASS); - if (error) err(EX_IOERR, "%s", CLASS); - - DIR *dir = opendir("."); - if (!dir) err(EX_IOERR, "%s", CLASS); - - struct dirent *entry; - while (NULL != (errno = 0, entry = readdir(dir))) { - if (entry->d_name[0] == '.') continue; - - error = chdir(entry->d_name); - if (error) err(EX_IOERR, "%s", entry->d_name); - break; - } - if (!entry) { - if (errno) err(EX_IOERR, "%s", CLASS); - errx(EX_CONFIG, "empty %s", CLASS); - } - - char *value = argv[1]; - - if (value[0] == '+' || value[0] == '-') { - FILE *actual = fopen("actual_brightness", "r"); - if (!actual) err(EX_IOERR, "actual_brightness"); - - unsigned int brightness; - int match = fscanf(actual, "%u", &brightness); - if (match == EOF) err(EX_IOERR, "actual_brightness"); - if (match < 1) err(EX_DATAERR, "actual_brightness"); - - size_t count = strnlen(value, 15); - if (value[0] == '+') { - brightness += 16 * count; - } else { - brightness -= 16 * count; - } - - char buf[15]; - snprintf(buf, sizeof(buf), "%u", brightness); - - value = buf; - } - - FILE *brightness = fopen("brightness", "w"); - if (!brightness) err(EX_IOERR, "brightness"); - - int count = fprintf(brightness, "%s", value); - if (count < 0) err(EX_IOERR, "brightness"); - - return EX_OK; -} diff --git a/home/.bin/dtch.c b/home/.bin/dtch.c deleted file mode 100755 index a37eeeeb..00000000 --- a/home/.bin/dtch.c +++ /dev/null @@ -1,254 +0,0 @@ -#if 0 -set -e -bin=$(dirname $0) -cc -Wall -Wextra -pedantic $@ -lutil -o $bin/dtch $0 -ln -f $bin/dtch $bin/atch -exit -#endif - -// Session attach and detach. - -#include <err.h> -#include <errno.h> -#include <fcntl.h> -#include <poll.h> -#include <pwd.h> -#include <stdio.h> -#include <stdlib.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/stat.h> -#include <sys/types.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 struct passwd *getUser(void) { - uid_t uid = getuid(); - struct passwd *user = getpwuid(uid); - if (!user) err(EX_OSFILE, "/etc/passwd"); - return user; -} - -static struct sockaddr_un sockAddr(const char *home, const char *name) { - struct sockaddr_un addr = { .sun_family = AF_LOCAL }; - snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/.dtch/%s", home, name); - return addr; -} - -static ssize_t writeAll(int fd, const char *buf, size_t len) { - ssize_t writeLen; - while (0 < (writeLen = write(fd, buf, len))) { - buf += writeLen; - len -= writeLen; - } - return writeLen; -} - -char z; -struct iovec iov = { .iov_base = &z, .iov_len = 1 }; - -static ssize_t sendFd(int sock, int fd) { - size_t len = CMSG_LEN(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 = len; - 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_LEN(sizeof(int)); - char buf[len]; - struct msghdr msg = { - .msg_iov = &iov, - .msg_iovlen = 1, - .msg_control = buf, - .msg_controllen = len, - }; - - ssize_t n = recvmsg(sock, &msg, 0); - if (n < 0) return -1; - - struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg); - if (!cmsg) { errno = ENOMSG; return -1; } - if (cmsg->cmsg_type != SCM_RIGHTS) { errno = EBADMSG; return -1; } - - return *(int *)CMSG_DATA(cmsg); -} - -static struct sockaddr_un addr; - -static void unlinkAddr(void) { - unlink(addr.sun_path); -} - -static int dtch(int argc, char *argv[]) { - int error; - - struct passwd *user = getUser(); - - char *name = user->pw_name; - char *cmd = user->pw_shell; - if (argc > 2) { - name = argv[1]; - cmd = argv[2]; - argv += 2; - } else if (argc > 1) { - name = argv[1]; - argv++; - } - - int home = open(user->pw_dir, 0); - if (home < 0) err(EX_IOERR, "%s", user->pw_dir); - error = mkdirat(home, ".dtch", S_IRWXU); - if (error && errno != EEXIST) err(EX_IOERR, "%s/.dtch", user->pw_dir); - error = close(home); - if (error) err(EX_IOERR, "%s", user->pw_dir); - - int server = socket(PF_LOCAL, SOCK_STREAM, 0); - if (server < 0) err(EX_OSERR, "socket"); - - addr = sockAddr(user->pw_dir, name); - error = bind(server, (struct sockaddr *)&addr, sizeof(addr)); - if (error) err(EX_IOERR, "%s", addr.sun_path); - atexit(unlinkAddr); - - error = chmod(addr.sun_path, 0600); - if (error) err(EX_IOERR, "%s", addr.sun_path); - - int master; - pid_t pid = forkpty(&master, NULL, NULL, NULL); - if (pid < 0) err(EX_OSERR, "forkpty"); - - if (!pid) { - error = close(server); - if (error) warn("close(%d)", server); - execvp(cmd, argv); - err(EX_OSERR, "%s", cmd); - } - - error = listen(server, 0); - if (error) err(EX_OSERR, "listen"); - - for (;;) { - int client = accept(server, NULL, NULL); - if (client < 0) err(EX_IOERR, "accept(%d)", server); - - ssize_t len = sendFd(client, master); - if (len < 0) warn("sendmsg(%d)", client); - - len = recv(client, &z, sizeof(z), 0); - if (len < 0) warn("recv(%d)", client); - - error = close(client); - if (error) warn("close(%d)", client); - - pid_t dead = waitpid(pid, NULL, WNOHANG); - if (dead < 0) warn("waitpid(%d)", pid); - if (dead) exit(EX_OK); - } -} - -static struct termios saveTerm; - -static void restoreTerm(void) { - tcsetattr(STDERR_FILENO, TCSADRAIN, &saveTerm); - printf( - "\x1b[?1049l" // rmcup - "\x1b\x63\x1b[!p\x1b[?3;4l\x1b[4l\x1b>" // reset - ); -} - -static int atch(int argc, char *argv[]) { - int error; - - struct passwd *user = getUser(); - char *name = (argc > 1) ? argv[1] : user->pw_name; - - int client = socket(PF_LOCAL, SOCK_STREAM, 0); - if (client < 0) err(EX_OSERR, "socket"); - - struct sockaddr_un addr = sockAddr(user->pw_dir, name); - error = connect(client, (struct sockaddr *)&addr, sizeof(addr)); - if (error) err(EX_IOERR, "%s", addr.sun_path); - - int master = recvFd(client); - if (master < 0) err(EX_IOERR, "recvmsg(%d)", client); - - struct winsize window; - error = ioctl(STDERR_FILENO, TIOCGWINSZ, &window); - if (error) err(EX_IOERR, "ioctl(%d, TIOCGWINSZ)", STDERR_FILENO); - - error = ioctl(master, TIOCSWINSZ, &window); - if (error) err(EX_IOERR, "ioctl(%d, TIOCSWINSZ)", master); - - error = tcgetattr(STDERR_FILENO, &saveTerm); - if (error) err(EX_IOERR, "tcgetattr(%d)", STDERR_FILENO); - atexit(restoreTerm); - - struct termios raw; - cfmakeraw(&raw); - error = tcsetattr(STDERR_FILENO, TCSADRAIN, &raw); - if (error) err(EX_IOERR, "tcsetattr(%d)", STDERR_FILENO); - - char ctrlL = CTRL('L'); - ssize_t len = write(master, &ctrlL, 1); - if (len < 0) err(EX_IOERR, "write(%d)", master); - - struct pollfd fds[2] = { - { .fd = STDIN_FILENO, .events = POLLIN }, - { .fd = master, .events = POLLIN }, - }; - - while (0 < poll(fds, 2, -1)) { - char buf[4096]; - ssize_t len; - - if (fds[0].revents) { - len = read(STDIN_FILENO, buf, sizeof(buf)); - if (len < 0) err(EX_IOERR, "read(%d)", STDIN_FILENO); - - if (len && buf[0] == CTRL('Q')) exit(EX_OK); - - len = writeAll(master, buf, len); - if (len < 0) err(EX_IOERR, "write(%d)", master); - } - - if (fds[1].revents) { - len = read(master, buf, sizeof(buf)); - if (len < 0) err(EX_IOERR, "read(%d)", master); - len = writeAll(STDOUT_FILENO, buf, len); - if (len < 0) err(EX_IOERR, "write(%d)", STDOUT_FILENO); - } - } - err(EX_IOERR, "poll([%d,%d])", STDIN_FILENO, master); -} - -int main(int argc, char *argv[]) { - switch (argv[0][0]) { - case 'd': return dtch(argc, argv); - case 'a': return atch(argc, argv); - } - return EX_USAGE; -} diff --git a/home/.bin/hnel.c b/home/.bin/hnel.c deleted file mode 100755 index 3aec85b3..00000000 --- a/home/.bin/hnel.c +++ /dev/null @@ -1,115 +0,0 @@ -#if 0 -exec cc -Wall -Wextra -pedantic $@ -lutil -o $(dirname $0)/hnel $0 -#endif - -// PTY wrapper for preserving HJKL in Tarmak layouts. - -#include <err.h> -#include <poll.h> -#include <stdbool.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 - -static char table[256] = { - ['n'] = 'j', ['N'] = 'J', [CTRL('N')] = CTRL('J'), - ['e'] = 'k', ['E'] = 'K', [CTRL('E')] = CTRL('K'), - ['j'] = 'e', ['J'] = 'E', [CTRL('J')] = CTRL('E'), - ['k'] = 'n', ['K'] = 'N', [CTRL('K')] = CTRL('N'), -}; - -static ssize_t writeAll(int fd, const char *buf, size_t len) { - ssize_t writeLen; - while (0 < (writeLen = write(fd, buf, len))) { - buf += writeLen; - len -= writeLen; - } - return writeLen; -} - -static struct termios saveTerm; - -static void restoreTerm(void) { - tcsetattr(STDERR_FILENO, TCSADRAIN, &saveTerm); -} - -int main(int argc, char *argv[]) { - int error; - - if (argc < 2) return EX_USAGE; - - error = tcgetattr(STDERR_FILENO, &saveTerm); - if (error) err(EX_IOERR, "tcgetattr"); - atexit(restoreTerm); - - struct termios raw; - 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, "ioctl(%d, TIOCGWINSZ)", STDERR_FILENO); - - int master; - pid_t pid = forkpty(&master, NULL, NULL, &window); - if (pid < 0) err(EX_OSERR, "forkpty"); - - if (!pid) { - execvp(argv[1], argv + 1); - err(EX_OSERR, "%s", argv[1]); - } - - bool enable = true; - - struct pollfd fds[2] = { - { .fd = STDIN_FILENO, .events = POLLIN }, - { .fd = master, .events = POLLIN }, - }; - while (0 < poll(fds, 2, -1)) { - char buf[4096]; - ssize_t len; - - if (fds[0].revents) { - len = read(STDIN_FILENO, buf, sizeof(buf)); - if (len < 0) err(EX_IOERR, "read(%d)", STDIN_FILENO); - - if (len == 1) { - if (buf[0] == CTRL('S')) { - enable = !enable; - continue; - } - - unsigned char c = buf[0]; - if (enable && table[c]) buf[0] = table[c]; - } - - len = writeAll(master, buf, len); - if (len < 0) err(EX_IOERR, "write(%d)", master); - } - - if (fds[1].revents) { - len = read(master, buf, sizeof(buf)); - if (len < 0) err(EX_IOERR, "read(%d)", master); - len = writeAll(STDOUT_FILENO, buf, len); - if (len < 0) err(EX_IOERR, "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/home/.bin/jrp.c b/home/.bin/jrp.c deleted file mode 100755 index 9317ac8e..00000000 --- a/home/.bin/jrp.c +++ /dev/null @@ -1,273 +0,0 @@ -#if 0 -exec cc -Wall -Wextra -pedantic $@ $0 -ledit -o $(dirname $0)/jrp -#endif - -// JIT RPN calculator. - -#include <err.h> -#include <histedit.h> -#include <stdbool.h> -#include <stdio.h> -#include <stdlib.h> -#include <sys/mman.h> -#include <sysexits.h> -#include <unistd.h> - -typedef unsigned long qop; -typedef unsigned int dop; - -typedef long qvalue; -typedef int dvalue; -typedef unsigned long uvalue; - -typedef qvalue *(*jitFn)(qvalue *); -typedef void (*rtFn)(qvalue); - -static char *formatBin(qvalue val) { - static char buf[sizeof(qvalue) * 8 + 1]; - uvalue uval = val; - size_t i = sizeof(buf); - do { - buf[--i] = '0' + (uval & 1); - } while (uval >>= 1); - return &buf[i]; -} - -static void rtPrintAscii(qvalue val) { - printf("%c\n", (char)val); -} -static void rtPrintBin(qvalue val) { - printf("%s\n", formatBin(val)); -} -static void rtPrintOct(qvalue val) { - printf("%lo\n", val); -} -static void rtPrintDec(qvalue val) { - printf("%ld\n", val); -} -static void rtPrintHex(qvalue val) { - printf("%lx\n", val); -} - -static const dop DOP_NOP = 0x90666666; // nop -static const dop DOP_PUSH = 0xc7c74857; // push rdi; mov rdi, strict dword 0 -static const dop DOP_DROP = 0x9066665f; // pop rdi -static const dop DOP_DUP = 0x90666657; // push rdi -static const dop DOP_SWAP = 0x243c8748; // xchg rdi, [rsp] -static const dop DOP_NEG = 0x90dff748; // neg rdi -static const dop DOP_ADD = 0xc7014858; // pop rax; add rdi, rax -static const dop DOP_QUO = 0x90c78948; // mov rdi, rax -static const dop DOP_REM = 0x90d78948; // mov rdi, rdx -static const dop DOP_NOT = 0x90d7f748; // not rdi -static const dop DOP_AND = 0xc7214858; // pop rax; and rdi, rax -static const dop DOP_OR = 0xc7094858; // pop rax; or rdi, rax -static const dop DOP_XOR = 0xc7314858; // pop rax; xor rdi, rax - -static const qop QOP_PROL = 0x5ffc8948e5894855; // push rbp; mov rbp, rsp; mov rsp, rdi; pop rdi -static const qop QOP_EPIL = 0x5dec8948e0894857; // push rdi; mov rax, rsp; mov rsp, rbp; pop rbp -static const qop QOP_RET = 0x90666666906666c3; // ret -static const qop QOP_CRT = 0xb848906690e58748; // xchg rsp, rbp; mov rax, strict qword 0 -static const qop QOP_CALL = 0x90665fe58748d0ff; // call rax; xchg rsp, rbp; pop rdi -static const qop QOP_PUSH = 0xbf48906690666657; // push rdi; mov rdi, strict qword 0 -static const qop QOP_SUB = 0x9066665f243c2948; // sub [rsp], rdi; pop rdi -static const qop QOP_MUL = 0x906666f8af0f4858; // pop rax; imul rdi, rax -static const qop QOP_DIV = 0x9066fff748994858; // pop rax; cqo; idiv rdi -static const qop QOP_SHL = 0x5f2424d348f98948; // mov rcx, rdi; shl qword [rsp], cl; pop rdi -static const qop QOP_SHR = 0x5f242cd348f98948; // mov rcx, rdi; shr qword [rsp], cl; pop rdi - -static int radix = 10; - -static struct { - qop *base; - qop *ptr; - dop dop; -} code; - -static struct { - qvalue *base; - qvalue *limit; - qvalue *ptr; -} stack; - -static void jitDop(dop op) { - if (code.dop) { - *code.ptr++ = (qop)op << 32 | code.dop; - code.dop = 0; - } else { - code.dop = op; - } -} - -static void jitQop(qop op) { - if (code.dop) jitDop(DOP_NOP); - *code.ptr++ = op; -} - -static void jitPush(qvalue imm) { - if ((dvalue)imm == imm) { - jitQop(DOP_PUSH | (qop)imm << 32); - } else { - jitQop(QOP_PUSH); - jitQop((qop)imm); - } -} - -static void jitCall(rtFn fn) { - jitQop(QOP_CRT); - jitQop((qop)fn); - jitQop(QOP_CALL); -} - -static void jitBegin(void) { - code.ptr = code.base; - jitQop(QOP_PROL); -} - -static void jitEnd(void) { - jitQop(QOP_EPIL); - jitQop(QOP_RET); -} - -static void jitInit(void) { - code.base = mmap(0, getpagesize(), PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0); - if (code.base == MAP_FAILED) err(EX_OSERR, "mmap"); -} - -static void stackInit(void) { - stack.base = mmap(0, 2 * getpagesize(), PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0); - if (stack.base == MAP_FAILED) err(EX_OSERR, "mmap"); - stack.limit = stack.base + getpagesize() / sizeof(qvalue); - stack.ptr = stack.limit; -} - -static void jitExec(void) { - int error; - error = mprotect(code.base, getpagesize(), PROT_READ | PROT_EXEC); - if (error) err(EX_OSERR, "mprotect"); - stack.ptr = ((jitFn)code.base)(stack.ptr); - if (stack.ptr > stack.limit) stack.ptr = stack.limit; - error = mprotect(code.base, getpagesize(), PROT_READ | PROT_WRITE); - if (error) err(EX_OSERR, "mprotect"); -} - -static void jitSrc(const char *src) { - bool quote = false; - while (*src) { - if (quote) { - jitPush(*src++); - quote = false; - continue; - } - - switch (*src) { - case ' ': break; - case 39: quote = true; break; - case 'B': radix = 2; break; - case 'O': radix = 8; break; - case 'D': radix = 10; break; - case 'X': radix = 16; break; - case ';': jitDop(DOP_DROP); break; - case ':': jitDop(DOP_DUP); break; - case 92: jitDop(DOP_SWAP); break; - case '_': jitDop(DOP_NEG); break; - case '+': jitDop(DOP_ADD); break; - case '-': jitQop(QOP_SUB); break; - case '*': jitQop(QOP_MUL); break; - case '/': jitQop(QOP_DIV); jitDop(DOP_QUO); break; - case '%': jitQop(QOP_DIV); jitDop(DOP_REM); break; - case '~': jitDop(DOP_NOT); break; - case '&': jitDop(DOP_AND); break; - case '|': jitDop(DOP_OR); break; - case '^': jitDop(DOP_XOR); break; - case '<': jitQop(QOP_SHL); break; - case '>': jitQop(QOP_SHR); break; - case ',': jitCall(rtPrintAscii); break; - case '.': switch (radix) { - case 2: jitCall(rtPrintBin); break; - case 8: jitCall(rtPrintOct); break; - case 10: jitCall(rtPrintDec); break; - case 16: jitCall(rtPrintHex); break; - } break; - - default: { - char *rest; - qvalue val = strtol(src, &rest, radix); - if (rest != src) { - src = rest; - jitPush(val); - continue; - } - } - } - - src++; - } -} - -static void jitDump(const char *path, FILE *file) { - size_t nitems = code.ptr - code.base; - size_t written = fwrite(code.base, sizeof(qop), nitems, file); - if (written < nitems) err(EX_IOERR, "%s", path); -} - -static char *prompt(EditLine *el __attribute((unused))) { - static char buf[4096]; - char *bufPtr = buf; - for (qvalue *stackPtr = stack.limit - 1; stackPtr >= stack.ptr; --stackPtr) { - size_t bufLen = sizeof(buf) - (bufPtr - buf) - 2; - switch (radix) { - case 2: bufPtr += snprintf(bufPtr, bufLen, " %s", formatBin(*stackPtr)); break; - case 8: bufPtr += snprintf(bufPtr, bufLen, " %lo", *stackPtr); break; - case 10: bufPtr += snprintf(bufPtr, bufLen, " %ld", *stackPtr); break; - case 16: bufPtr += snprintf(bufPtr, bufLen, " %lx", *stackPtr); break; - } - } - buf[0] = '['; - if (bufPtr == buf) bufPtr++; - *bufPtr++ = ']'; - *bufPtr++ = ' '; - *bufPtr = 0; - return buf; -} - -int main(int argc, char *argv[]) { - FILE *file = NULL; - char *path = getenv("JRP_DUMP"); - if (path) { - file = fopen(path, "w"); - if (!file) err(EX_CANTCREAT, "%s", path); - } - - jitInit(); - stackInit(); - - if (argc > 1) { - jitBegin(); - for (int i = 1; i < argc; ++i) - jitSrc(argv[i]); - jitEnd(); - if (file) jitDump(path, file); - jitExec(); - return EX_OK; - } - - EditLine *el = el_init(argv[0], stdin, stdout, stderr); - el_set(el, EL_PROMPT, prompt); - el_set(el, EL_SIGNAL, true); - - for (;;) { - int count; - const char *line = el_gets(el, &count); - if (count < 0) err(EX_IOERR, "el_gets"); - if (!line) break; - - jitBegin(); - jitSrc(line); - jitEnd(); - if (file) jitDump(path, file); - jitExec(); - } - - el_end(el); - return EX_OK; -} diff --git a/home/.bin/pbd.c b/home/.bin/pbd.c deleted file mode 100755 index 01e5c07d..00000000 --- a/home/.bin/pbd.c +++ /dev/null @@ -1,136 +0,0 @@ -#if 0 -set -e -bin=$(dirname $0) -cc -Wall -Wextra -pedantic $@ -o $bin/pbd $0 -ln -f $bin/pbd $bin/pbcopy -ln -f $bin/pbd $bin/pbpaste -exit -#endif - -// TCP server which pipes between macOS pbcopy and pbpaste, and pbcopy and -// pbpaste implementations which connect to it. - -#include <arpa/inet.h> -#include <err.h> -#include <netinet/in.h> -#include <stdbool.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <sys/socket.h> -#include <sys/wait.h> -#include <sysexits.h> -#include <unistd.h> - -static void spawn(const char *cmd, int childFd, int parentFd) { - pid_t pid = fork(); - if (pid < 0) err(EX_OSERR, "fork"); - - if (pid) { - int status; - pid_t wait = waitpid(pid, &status, 0); - if (wait < 0) err(EX_OSERR, "waitpid"); - - if (status) { - warnx("child %s status %d", cmd, status); - } - } else { - int fd = dup2(parentFd, childFd); - if (fd < 0) err(EX_OSERR, "dup2"); - - int error = execlp(cmd, cmd, NULL); - if (error) err(EX_OSERR, "execlp"); - } -} - -static int pbd(void) { - int error; - - int server = socket(PF_INET, SOCK_STREAM, 0); - if (server < 0) err(EX_OSERR, "socket"); - - 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_OSERR, "bind"); - - error = listen(server, 1); - if (error) err(EX_OSERR, "listen"); - - for (;;) { - int client = accept(server, NULL, NULL); - if (client < 0) err(EX_OSERR, "accept"); - - spawn("pbpaste", STDOUT_FILENO, client); - - uint8_t p; - ssize_t peek = recv(client, &p, 1, MSG_PEEK); - if (peek < 0) err(EX_IOERR, "recv"); - - if (peek) { - spawn("pbcopy", STDIN_FILENO, client); - } - - error = close(client); - if (error) err(EX_IOERR, "close"); - } -} - -static int pbdClient(void) { - 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_OSERR, "connect"); - - return client; -} - -static void copy(int fdIn, int fdOut) { - char readBuf[4096]; - ssize_t readLen; - while (0 < (readLen = read(fdIn, readBuf, sizeof(readBuf)))) { - char *writeBuf = readBuf; - ssize_t writeLen; - while (0 < (writeLen = write(fdOut, writeBuf, readLen))) { - writeBuf += writeLen; - readLen -= writeLen; - } - if (writeLen < 0) err(EX_IOERR, "write"); - } - if (readLen < 0) err(EX_IOERR, "read"); -} - -static int pbcopy(void) { - int client = pbdClient(); - copy(STDIN_FILENO, client); - return EX_OK; -} - -static int pbpaste(void) { - int client = pbdClient(); - int error = shutdown(client, SHUT_WR); - if (error) err(EX_OSERR, "shutdown"); - copy(client, STDOUT_FILENO); - return EX_OK; -} - -int main(int argc __attribute((unused)), char *argv[]) { - if (!argv[0][0] || !argv[0][1]) return EX_USAGE; - switch (argv[0][2]) { - case 'd': return pbd(); - case 'c': return pbcopy(); - case 'p': return pbpaste(); - } - return EX_USAGE; -} diff --git a/home/.bin/wake.c b/home/.bin/wake.c deleted file mode 100755 index 2f314975..00000000 --- a/home/.bin/wake.c +++ /dev/null @@ -1,41 +0,0 @@ -#if 0 -exec cc -Wall -Wextra -Wpedantic $@ -o $(dirname $0)/wake $0 -#endif - -#include <err.h> -#include <netinet/in.h> -#include <stdint.h> -#include <stdlib.h> -#include <sys/socket.h> -#include <sysexits.h> - -#define MAC 0x04, 0x7D, 0x7B, 0xD5, 0x6A, 0x53 - -const uint8_t payload[] = { - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - MAC, MAC, MAC, MAC, MAC, MAC, MAC, MAC, - MAC, MAC, MAC, MAC, MAC, MAC, MAC, MAC, -}; - -int main() { - int sock = socket(PF_INET, SOCK_DGRAM, 0); - if (sock < 0) err(EX_OSERR, "socket"); - - int on = 1; - int error = setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on)); - if (error) err(EX_OSERR, "setsockopt"); - - struct sockaddr_in addr = { - .sin_family = AF_INET, - .sin_port = 9, - .sin_addr.s_addr = INADDR_BROADCAST, - }; - - ssize_t len = sendto( - sock, payload, sizeof(payload), 0, - (struct sockaddr *)&addr, sizeof(addr) - ); - if (len < 0) err(EX_IOERR, "sendto"); - - return EX_OK; -} diff --git a/home/.bin/watch.c b/home/.bin/watch.c deleted file mode 100755 index c13f6d71..00000000 --- a/home/.bin/watch.c +++ /dev/null @@ -1,100 +0,0 @@ -#if 0 -exec cc -Wall -Wextra -Wpedantic -o $(dirname $0)/watch $0 -#endif - -/* - * Execute a command each time files change. - * - * Copyright (c) 2017, Curtis McEnroe <programble@gmail.com> - * - * 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 <stdlib.h> -#include <sys/event.h> -#include <sys/wait.h> -#include <sysexits.h> -#include <unistd.h> - -static void watch(int kq, char *path) { - int fd = open(path, O_RDONLY); - if (fd < 0) err(EX_IOERR, "%s", path); - - struct kevent event = { - .ident = fd, - .filter = EVFILT_VNODE, - .flags = EV_ADD | EV_CLEAR, - .fflags = NOTE_WRITE | NOTE_DELETE, - .udata = path, - }; - int nevents = kevent(kq, &event, 1, NULL, 0, NULL); - if (nevents < 0) err(EX_IOERR, "kevent"); -} - -static void exec(char *const argv[]) { - pid_t pid = fork(); - if (pid < 0) err(EX_OSERR, "fork"); - - if (!pid) { - execvp(argv[0], argv); - err(EX_OSERR, "%s", argv[0]); - } - - int status; - pid = wait(&status); - if (pid < 0) err(EX_OSERR, "wait"); - - if (WIFEXITED(status)) { - warnx("exit %d", WEXITSTATUS(status)); - } else if (WIFSIGNALED(status)) { - warnx("signal %d", WTERMSIG(status)); - } else { - warnx("status %d", status); - } -} - -int main(int argc, char *argv[]) { - if (argc < 3) return EX_USAGE; - - int kq = kqueue(); - if (kq < 0) err(EX_OSERR, "kqueue"); - - int index; - for (index = 1; index < argc - 1; ++index) { - if (argv[index][0] == '-') { - index++; - break; - } - watch(kq, argv[index]); - } - - exec(&argv[index]); - - for (;;) { - struct kevent event; - int nevents = kevent(kq, NULL, 0, &event, 1, NULL); - if (nevents < 0) err(EX_IOERR, "kevent"); - - if (event.fflags & NOTE_DELETE) { - close(event.ident); - watch(kq, event.udata); - } - - exec(&argv[index]); - } -} diff --git a/home/.bin/xx.c b/home/.bin/xx.c deleted file mode 100755 index 78d8db4c..00000000 --- a/home/.bin/xx.c +++ /dev/null @@ -1,117 +0,0 @@ -#if 0 -exec cc -Wall -Wextra -pedantic $@ -o $(dirname $0)/xx $0 -#endif - -// Hexdump. - -#include <ctype.h> -#include <err.h> -#include <stdbool.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <sysexits.h> -#include <unistd.h> - -static bool allZero(const uint8_t *buf, size_t len) { - for (size_t i = 0; i < len; ++i) - if (buf[i]) return false; - return true; -} - -enum { - FLAG_ASCII = 1 << 0, - FLAG_OFFSET = 1 << 1, - FLAG_SKIP = 1 << 2, - FLAG_UNDUMP = 1 << 3, -}; - -static void dump(size_t cols, size_t group, uint8_t flags, FILE *file) { - uint8_t buf[cols]; - size_t offset = 0, len = 0; - for (;;) { - offset += len; - len = fread(buf, 1, sizeof(buf), file); - if (!len) break; - - if ((flags & FLAG_SKIP) && len == sizeof(buf)) { - static bool skip; - if (allZero(buf, len)) { - if (!skip) printf("*\n"); - skip = true; - continue; - } - skip = false; - } - - if (flags & FLAG_OFFSET) { - printf("%08zx: ", offset); - } - - for (size_t i = 0; i < len; ++i) { - if (group && i && !(i % group)) printf(" "); - printf("%02x ", buf[i]); - } - - if (flags & FLAG_ASCII) { - for (size_t i = len; i < cols; ++i) { - printf((group && !(i % group)) ? " " : " "); - } - printf(" "); - for (size_t i = 0; i < len; ++i) { - if (group && i && !(i % group)) printf(" "); - printf("%c", isprint(buf[i]) ? buf[i] : '.'); - } - } - - printf("\n"); - if (len < sizeof(buf)) break; - } -} - -static void undump(FILE *file) { - uint8_t byte; - int match; - while (1 == (match = fscanf(file, " %hhx", &byte))) { - printf("%c", byte); - } - if (match == 0) errx(EX_DATAERR, "invalid input"); -} - -int main(int argc, char *argv[]) { - size_t cols = 16; - size_t group = 8; - uint8_t flags = FLAG_ASCII | FLAG_OFFSET; - char *path = NULL; - - int opt; - while (0 < (opt = getopt(argc, argv, "ac:fg:hku"))) { - switch (opt) { - case 'a': flags ^= FLAG_ASCII; break; - case 'f': flags ^= FLAG_OFFSET; break; - case 'k': flags ^= FLAG_SKIP; break; - case 'u': flags ^= FLAG_UNDUMP; break; - case 'c': cols = strtoul(optarg, NULL, 10); break; - case 'g': group = strtoul(optarg, NULL, 10); break; - default: - fprintf(stderr, "usage: xx [-afku] [-c cols] [-g group] [file]\n"); - return (opt == 'h') ? EX_OK : EX_USAGE; - } - } - if (!cols) return EX_USAGE; - if (argc > optind) { - path = argv[optind]; - } - - FILE *file = path ? fopen(path, "r") : stdin; - if (!file) err(EX_NOINPUT, "%s", path); - - if (flags & FLAG_UNDUMP) { - undump(file); - } else { - dump(cols, group, flags, file); - } - - if (ferror(file)) err(EX_IOERR, "%s", path); - return EX_OK; -} |