216 lines
4.1 KiB
C
216 lines
4.1 KiB
C
/* ? 2005-2007 Anselm R. Garbe <garbeam at gmail dot com>
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* ? 2007 Kris Maglione <fbsdaemon@gmail.com>
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* ? 2005 Nico Golde <nico at ngolde dot de>
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* See LICENSE file for license details.
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*/
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#include <ctype.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#define nil ((void*)0)
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typedef unsigned short ushort;
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#define PINGTIMEOUT 300
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static char* host = "irc.oftc.net";
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static char* port = "ircd";
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static char* password;
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static char nick[32];
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static char bufin[4096];
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static char bufout[4096];
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static char channel[256];
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static time_t trespond;
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static FILE *srv;
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#include "util.c"
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static void
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pout(char *channel, char *fmt, ...) {
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static char timestr[18];
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time_t t;
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va_buf(bufout, fmt);
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t = time(nil);
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strftime(timestr, sizeof timestr, "%D %R", localtime(&t));
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fprintf(stdout, "%-12s: %s %s\n", channel, timestr, bufout);
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}
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static void
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sout(char *fmt, ...) {
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va_buf(bufout, fmt);
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fprintf(srv, "%s\r\n", bufout);
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}
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static void
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privmsg(char *channel, char *msg) {
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if(channel[0] == '\0') {
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pout("", "No channel to send to");
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return;
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}
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pout(channel, "<%s> %s", nick, msg);
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sout("PRIVMSG %s :%s", channel, msg);
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}
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static void
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parsein(char *msg) {
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char *p;
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char c;
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if(msg[0] == '\0')
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return;
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msg = ctok(&msg, '\n');
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if(msg[0] != ':') {
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privmsg(channel, msg);
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return;
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}
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c = *++msg;
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if(!c || !isspace(msg[1]))
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sout("%s", msg);
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else {
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if(msg[1])
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msg += 2;
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switch(c) {
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case 'j':
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sout("JOIN %s", msg);
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if(channel[0] == '\0')
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strlcpy(channel, msg, sizeof channel);
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break;
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case 'l':
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p = tok(&msg);
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if(!*p)
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p = channel;
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if(!*msg)
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msg = "sic - 250 LOC are too much!";
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sout("PART %s :%s", p, msg);
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break;
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case 'm':
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p = tok(&msg);
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privmsg(p, msg);
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break;
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case 's':
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strlcpy(channel, msg, sizeof channel);
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break;
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default:
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sout("%c %s", c, msg);
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break;
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}
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}
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}
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static void
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parsesrv(char *msg) {
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char *cmd, *p, *usr, *txt;
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usr = host;
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if(!msg || !*msg)
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return;
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if(msg[0] == ':') {
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msg++;
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p = tok(&msg);
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if(!*msg)
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return;
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usr = ctok(&p, '!');
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}
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txt = ctok(&msg, '\r');
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msg = ctok(&txt, ':');
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cmd = tok(&msg);
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if(!strcmp("PONG", cmd))
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return;
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if(!strcmp("PRIVMSG", cmd))
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pout(msg, "<%s> %s", usr, txt);
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else if(!strcmp("PING", cmd))
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sout("PONG %s", txt);
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else {
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pout(usr, ">< %s: %s", cmd, txt);
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if(!strcmp("NICK", cmd) && !strcmp(usr, nick))
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strlcpy(nick, txt, sizeof nick);
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}
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}
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int
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main(int argc, char *argv[]) {
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int i, c;
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struct timeval tv;
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fd_set rd;
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strlcpy(nick, getenv("USER"), sizeof nick);
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for(i = 1; i < argc; i++) {
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c = argv[i][1];
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if(argv[i][0] != '-' || argv[i][2])
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c = -1;
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switch(c) {
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case 'h':
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if(++i < argc) host = argv[i];
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break;
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case 'p':
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if(++i < argc) port = argv[i];
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break;
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case 'n':
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if(++i < argc) strlcpy(nick, argv[i], sizeof nick);
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break;
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case 'k':
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if(++i < argc) password = argv[i];
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break;
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case 'v':
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eprint("sic-"VERSION", ©2005-2009 Kris Maglione, Anselm R. Garbe, Nico Golde\n");
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default:
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eprint("usage: sic [-h host] [-p port] [-n nick] [-k keyword] [-v]\n");
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}
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}
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/* init */
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i = dial(host, port);
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srv = fdopen(i, "r+");
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/* login */
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if(password)
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sout("PASS %s", password);
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sout("NICK %s", nick);
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sout("USER %s localhost %s :%s", nick, host, nick);
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fflush(srv);
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setbuf(stdout, nil);
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setbuf(srv, nil);
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for(;;) { /* main loop */
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FD_ZERO(&rd);
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FD_SET(0, &rd);
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FD_SET(fileno(srv), &rd);
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tv.tv_sec = 120;
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tv.tv_usec = 0;
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i = select(fileno(srv) + 1, &rd, 0, 0, &tv);
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if(i < 0) {
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if(errno == EINTR)
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continue;
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eprint("sic: error on select():");
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}
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else if(i == 0) {
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if(time(nil) - trespond >= PINGTIMEOUT)
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eprint("sic shutting down: parse timeout\n");
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sout("PING %s", host);
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continue;
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}
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if(FD_ISSET(fileno(srv), &rd)) {
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if(fgets(bufin, sizeof bufin, srv) == nil)
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eprint("sic: remote host closed connection\n");
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parsesrv(bufin);
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trespond = time(nil);
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}
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if(FD_ISSET(0, &rd)) {
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if(fgets(bufin, sizeof bufin, stdin) == nil)
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eprint("sic: broken pipe\n");
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parsein(bufin);
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}
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}
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return 0;
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}
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