4 files changed, 0 insertions, 266 deletions

diff --git a/bin/irc/.gitignore b/bin/irc/.gitignore
deleted file mode 100644
index 32e541af..00000000
--- a/bin/irc/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-relay
diff --git a/bin/irc/Makefile b/bin/irc/Makefile
deleted file mode 100644
index c909f067..00000000
--- a/bin/irc/Makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-LIBRESSL_PREFIX = /usr/local
-
-CFLAGS += -Wall -Wextra -Wpedantic
-CFLAGS += -I$(LIBRESSL_PREFIX)/include
-LDFLAGS += -L$(LIBRESSL_PREFIX)/lib
-LDLIBS = -ltls
-
--include config.mk
-
-relay:
-
-clean:
-	rm -f relay
diff --git a/bin/irc/relay.1 b/bin/irc/relay.1
deleted file mode 100644
index 402c4726..00000000
--- a/bin/irc/relay.1
+++ /dev/null
@@ -1,48 +0,0 @@
-.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/irc/relay.c b/bin/irc/relay.c
deleted file mode 100644
index 7c70b4db..00000000
--- a/bin/irc/relay.c
+++ /dev/null
@@ -1,204 +0,0 @@
-/* Copyright (C) 2019  June 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 <netdb.h>
-#include <netinet/in.h>
-#include <poll.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\u200B%s %.*s\n", nick[0], &nick[1], (int)len, line);
-	} else if (command[0] == 'N') {
-		printf("-%c\u200B%s- %s\n", nick[0], &nick[1], line);
-	} else {
-		printf("<%c\u200B%s> %s\n", nick[0], &nick[1], line);
-	}
-}
-
-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);
-
-	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__
-	cap_rights_t rights;
-
-	error = cap_enter();
-	if (error) err(EX_OSERR, "cap_enter");
-
-	cap_rights_init(&rights, CAP_READ, CAP_EVENT);
-	error = cap_rights_limit(STDIN_FILENO, &rights);
-	if (error) err(EX_OSERR, "cap_rights_limit");
-
-	cap_rights_init(&rights, CAP_WRITE);
-	error = cap_rights_limit(STDOUT_FILENO, &rights);
-	if (error) err(EX_OSERR, "cap_rights_limit");
-
-	error = cap_rights_limit(STDERR_FILENO, &rights);
-	if (error) err(EX_OSERR, "cap_rights_limit");
-
-	cap_rights_init(&rights, CAP_READ, CAP_WRITE, CAP_EVENT);
-	error = cap_rights_limit(sock, &rights);
-	if (error) err(EX_OSERR, "cap_rights_limit");
-#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");
-}