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-rw-r--r--extra/notify/notify.c353
1 files changed, 0 insertions, 353 deletions
diff --git a/extra/notify/notify.c b/extra/notify/notify.c
deleted file mode 100644
index 935ba26..0000000
--- a/extra/notify/notify.c
+++ /dev/null
@@ -1,353 +0,0 @@
-/* Copyright (C) 2021  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/>.
- *
- * Additional permission under GNU GPL version 3 section 7:
- *
- * If you modify this Program, or any covered work, by linking or
- * combining it with OpenSSL (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 OpenSSL used as well as that of the
- * covered work.
- */
-
-#include <assert.h>
-#include <ctype.h>
-#include <err.h>
-#include <signal.h>
-#include <stdarg.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/wait.h>
-#include <sysexits.h>
-#include <time.h>
-#include <tls.h>
-#include <unistd.h>
-
-#define ARRAY_LEN(a) (sizeof(a) / sizeof((a)[0]))
-
-static bool verbose;
-static struct tls *client;
-
-static void clientWrite(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 format(const char *format, ...) {
-	char buf[1024];
-	va_list ap;
-	va_start(ap, format);
-	int len = vsnprintf(buf, sizeof(buf), format, ap);
-	va_end(ap);
-	assert((size_t)len < sizeof(buf));
-	if (verbose) fprintf(stderr, "%s", buf);
-	clientWrite(buf, len);
-}
-
-enum { ParamCap = 2 };
-struct Message {
-	char *time;
-	char *nick;
-	char *user;
-	char *host;
-	char *cmd;
-	char *params[ParamCap];
-};
-
-static struct Message parse(char *line) {
-	if (verbose) fprintf(stderr, "%s\n", line);
-	struct Message msg = {0};
-	if (line[0] == '@') {
-		char *tags = 1 + strsep(&line, " ");
-		while (tags) {
-			char *tag = strsep(&tags, ";");
-			char *key = strsep(&tag, "=");
-			if (!strcmp(key, "time")) msg.time = tag;
-		}
-	}
-	if (line[0] == ':') {
-		char *origin = 1 + strsep(&line, " ");
-		msg.nick = strsep(&origin, "!");
-		msg.user = strsep(&origin, "@");
-		msg.host = origin;
-	}
-	msg.cmd = strsep(&line, " ");
-	for (size_t i = 0; line && i < ParamCap; ++i) {
-		if (line[0] == ':') {
-			msg.params[i] = &line[1];
-			break;
-		}
-		msg.params[i] = strsep(&line, " ");
-	}
-	return msg;
-}
-
-static void require(const struct Message *msg, bool nick, size_t len) {
-	if (nick && !msg->nick) errx(EX_PROTOCOL, "%s missing origin", msg->cmd);
-	for (size_t i = 0; i < len; ++i) {
-		if (msg->params[i]) continue;
-		errx(EX_PROTOCOL, "%s missing parameter %zu", msg->cmd, 1 + i);
-	}
-}
-
-typedef void Handler(struct Message *msg);
-
-static void handlePing(struct Message *msg) {
-	require(msg, false, 1);
-	format("PONG :%s\r\n", msg->params[0]);
-}
-
-static void handleError(struct Message *msg) {
-	require(msg, false, 1);
-	errx(EX_UNAVAILABLE, "%s", msg->params[0]);
-}
-
-static char *nick;
-static bool away;
-
-static void handleReplyWelcome(struct Message *msg) {
-	require(msg, false, 1);
-	free(nick);
-	nick = strdup(msg->params[0]);
-	if (!nick) err(EX_OSERR, "strdup");
-	format("USERHOST %s\r\n", nick);
-}
-
-static void handleNick(struct Message *msg) {
-	require(msg, true, 1);
-	if (nick && !strcmp(msg->nick, nick)) {
-		free(nick);
-		nick = strdup(msg->params[0]);
-		if (!nick) err(EX_OSERR, "strdup");
-	}
-}
-
-static void handleReplyUserHost(struct Message *msg) {
-	require(msg, false, 2);
-	while (msg->params[1]) {
-		char *reply = strsep(&msg->params[1], " ");
-		char *replyNick = strsep(&reply, "*=");
-		if (strcmp(replyNick, nick)) continue;
-		if (reply && !reply[0]) strsep(&msg->params[1], "=");
-		if (!reply) errx(EX_PROTOCOL, "invalid USERHOST reply");
-		away = (reply[0] == '-');
-		break;
-	}
-}
-
-static void handleReplyNowAway(struct Message *msg) {
-	(void)msg;
-	away = true;
-}
-
-static void handleReplyUnaway(struct Message *msg) {
-	(void)msg;
-	away = false;
-}
-
-static const char *command;
-
-static void handlePrivmsg(struct Message *msg) {
-	require(msg, true, 2);
-	if (!nick || !away) return;
-
-	if (!msg->time) return;
-	struct tm tm = {0};
-	strptime(msg->time, "%FT%T", &tm);
-	time_t then = timegm(&tm);
-	if (time(NULL) - then > 60) return;
-
-	bool query = (msg->params[0][0] != '#');
-	bool mention = false;
-	size_t len = strlen(nick);
-	for (
-		char *match = msg->params[1];
-		NULL != (match = strstr(match, nick));
-		match = &match[len]
-	) {
-		char a = (match > msg->params[1] ? match[-1] : ' ');
-		char b = (match[len] ? match[len] : ' ');
-		if (b == '\1') b = ' ';
-		if ((isspace(a) || ispunct(a)) && (isspace(b) || ispunct(b))) {
-			mention = true;
-			break;
-		}
-		match = &match[len];
-	}
-	if (!query && !mention) return;
-
-	pid_t pid = fork();
-	if (pid < 0) err(EX_OSERR, "fork");
-	if (pid) return;
-
-	setenv("NOTIFY_TIME", msg->time, 1);
-	setenv("NOTIFY_NICK", msg->nick, 1);
-	if (msg->user) setenv("NOTIFY_USER", msg->user, 1);
-	if (msg->host) setenv("NOTIFY_HOST", msg->host, 1);
-	if (!query) setenv("NOTIFY_CHANNEL", msg->params[0], 1);
-	setenv("NOTIFY_MESSAGE", msg->params[1], 1);
-
-	const char *shell = getenv("SHELL");
-	if (!shell) shell = "/bin/sh";
-	execl(shell, "sh", "-c", command, NULL);
-	err(EX_OSERR, "%s", shell);
-}
-
-static const struct {
-	const char *cmd;
-	Handler *fn;
-} Handlers[] = {
-	{ "001", handleReplyWelcome },
-	{ "302", handleReplyUserHost },
-	{ "305", handleReplyUnaway },
-	{ "306", handleReplyNowAway },
-	{ "ERROR", handleError },
-	{ "NICK", handleNick },
-	{ "PING", handlePing },
-	{ "PRIVMSG", handlePrivmsg },
-};
-
-static void handle(struct Message *msg) {
-	if (!msg->cmd) return;
-	for (size_t i = 0; i < ARRAY_LEN(Handlers); ++i) {
-		if (strcmp(msg->cmd, Handlers[i].cmd)) continue;
-		Handlers[i].fn(msg);
-		break;
-	}
-}
-
-static void reap(int sig) {
-	(void)sig;
-	int status;
-	wait(&status);
-}
-
-static void quit(int sig) {
-	(void)sig;
-	format("QUIT\r\n");
-	tls_close(client);
-	_exit(EX_OK);
-}
-
-int main(int argc, char *argv[]) {
-	bool insecure = false;
-	const char *cert = NULL;
-	const char *priv = NULL;
-	const char *host = NULL;
-	const char *port = "6697";
-	const char *pass = NULL;
-	const char *trust = NULL;
-	const char *user = "pounce-notify";
-
-	for (int opt; 0 < (opt = getopt(argc, argv, "!c:k:p:t:u:vw:"));) {
-		switch (opt) {
-			break; case '!': insecure = true;
-			break; case 'c': cert = optarg;
-			break; case 'k': priv = optarg;
-			break; case 'p': port = optarg;
-			break; case 't': trust = optarg;
-			break; case 'u': user = optarg;
-			break; case 'v': verbose = true;
-			break; case 'w': pass = optarg;
-			break; default:  return EX_USAGE;
-		}
-	}
-	if (argc - optind < 1) errx(EX_USAGE, "host required");
-	if (argc - optind < 2) errx(EX_USAGE, "command required");
-	host = argv[optind++];
-	command = argv[optind];
-
-	setenv("POUNCE_HOST", host, 1);
-	setenv("POUNCE_PORT", port, 1);
-
-	client = tls_client();
-	if (!client) errx(EX_SOFTWARE, "tls_client");
-
-	struct tls_config *config = tls_config_new();
-	if (!config) errx(EX_SOFTWARE, "tls_config_new");
-
-	if (insecure) {
-		tls_config_insecure_noverifycert(config);
-		tls_config_insecure_noverifyname(config);
-	}
-
-	int error;
-	if (trust) {
-		tls_config_insecure_noverifyname(config);
-		error = tls_config_set_ca_file(config, trust);
-		if (error) errx(EX_NOINPUT, "%s: %s", trust, tls_config_error(config));
-	}
-	if (cert) {
-		error = tls_config_set_keypair_file(config, cert, (priv ? priv : cert));
-		if (error) {
-			errx(
-				EX_NOINPUT, "tls_config_set_keypair_file: %s",
-				tls_config_error(config)
-			);
-		}
-	}
-
-	error = tls_configure(client, config);
-	if (error) errx(EX_SOFTWARE, "tls_configure: %s", tls_error(client));
-	tls_config_free(config);
-
-	error = tls_connect(client, host, port);
-	if (error) errx(EX_UNAVAILABLE, "tls_connect: %s", tls_error(client));
-
-	if (pass) format("PASS :%s\r\n", pass);
-	format(
-		"CAP REQ :causal.agency/passive server-time\r\n"
-		"CAP END\r\n"
-		"NICK *\r\n"
-		"USER %s 0 * :pounce-notify\r\n",
-		user
-	);
-
-	signal(SIGINT, quit);
-	signal(SIGTERM, quit);
-	signal(SIGCHLD, reap);
-
-	size_t len = 0;
-	char buf[8191 + 512];
-	for (;;) {
-		ssize_t ret = tls_read(client, &buf[len], sizeof(buf) - len);
-		if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT) continue;
-		if (ret < 0) errx(EX_IOERR, "tls_read: %s", tls_error(client));
-		if (!ret) errx(EX_PROTOCOL, "server closed connection");
-		len += ret;
-
-		char *line = buf;
-		for (;;) {
-			char *crlf = memmem(line, &buf[len] - line, "\r\n", 2);
-			if (!crlf) break;
-			*crlf = '\0';
-			struct Message msg = parse(line);
-			handle(&msg);
-			line = crlf + 2;
-		}
-		len -= line - buf;
-		memmove(buf, line, len);
-	}
-}
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-19 00:33:46 +0000