2 * (C)opyright MMV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * (C)opyright MMV-MMVI Nico Golde <nico at ngolde dot de>
4 * See LICENSE file for license details.
9 #include <netinet/in.h>
13 #include <sys/socket.h>
16 #define PINGTIMEOUT 300
19 enum { Tnick, Tuser, Tcmd, Tchan, Targ, Ttext, Tlast };
21 static char *server = "irc.oftc.net";
22 static int port = 6667;
23 static char *nick = NULL;
24 static char *fullname = NULL;
25 static char *password = NULL;
27 static char bufin[MAXMSG], bufout[MAXMSG];
28 static char channel[256];
30 static time_t trespond;
33 getline(int fd, unsigned int len, char *buf)
38 if(read(fd, &c, sizeof(char)) != sizeof(char))
42 while(c != '\n' && i < len);
48 pout(char *channel, char *msg)
50 static char timestr[18];
53 strftime(timestr, sizeof(timestr), "%a %R", localtime(&t));
54 fprintf(stdout, "%s: %s %s\n", channel, timestr, msg);
58 privmsg(char *channel, char *msg)
60 snprintf(bufout, sizeof(bufout), "<%s> %s", nick, msg);
61 pout(channel, bufout);
62 snprintf(bufout, sizeof(bufout), "PRIVMSG %s :%s\r\n", channel, msg);
63 write(srv, bufout, strlen(bufout));
72 privmsg(channel, msg);
75 if((p = strchr(&msg[3], ' ')))
79 snprintf(bufout, sizeof(bufout), "%s\r\n", &msg[1]);
83 snprintf(bufout, sizeof(bufout), "JOIN %s\r\n", &msg[3]);
85 privmsg(&msg[3], p + 1);
91 snprintf(bufout, sizeof(bufout), "PART %s :%s\r\n", &msg[3], p);
93 snprintf(bufout, sizeof(bufout), "PART %s :sic\r\n", &msg[3]);
99 strncpy(channel, &msg[3], sizeof(channel));
102 snprintf(bufout, sizeof(bufout), "TOPIC %s :%s\r\n", &msg[3], p);
105 write(srv, bufout, strlen(bufout));
109 tokenize(char **result, unsigned int reslen, char *str, char delim)
116 for(n = str; *n == delim; n++);
118 for(i = 0; *n != 0;) {
129 if((i < reslen) && (p < n) && strlen(p))
131 return i; /* number of tokens */
137 char *argv[Tlast], *cmd, *p;
142 for(i = 0; i < Tlast; i++)
146 <bufout> ::= [':' <prefix> <SPACE> ] <command> <params> <crlf>
147 <prefix> ::= <servername> | <nick> [ '!' <user> ] [ '@' <server> ]
148 <command> ::= <letter> { <letter> } | <number> <number> <number>
149 <SPACE> ::= ' ' { ' ' }
150 <params> ::= <SPACE> [ ':' <trailing> | <middle> <params> ]
151 <middle> ::= <Any *non-empty* sequence of octets not including SPACE
152 or NUL or CR or LF, the first of which may not be ':'>
153 <trailing> ::= <Any, possibly *empty*, sequence of octets not including NUL or CR or LF>
156 if(msg[0] == ':') { /* check prefix */
157 p = strchr(msg, ' ');
159 for(++p; *p == ' '; p++);
161 argv[Tnick] = &msg[1];
162 if((p = strchr(msg, '!'))) {
170 for(p = cmd; p && *p != 0; p++)
171 if(*p == '\r' || *p == '\n')
174 if((p = strchr(cmd, ':'))) {
178 tokenize(&argv[Tcmd], Tlast - Tcmd, cmd, ' ');
180 if(!strncmp("PONG", argv[Tcmd], 5)) {
182 } else if(!strncmp("PING", argv[Tcmd], 5)) {
183 snprintf(bufout, sizeof(bufout), "PONG %s\r\n", argv[Ttext]);
184 write(srv, bufout, strlen(bufout));
186 } else if(!argv[Tnick] || !argv[Tuser]) { /* server command */
187 snprintf(bufout, sizeof(bufout), "%s", argv[Ttext] ? argv[Ttext] : "");
188 pout(server, bufout);
190 } else if(!strncmp("ERROR", argv[Tcmd], 6))
191 snprintf(bufout, sizeof(bufout), "-!- error %s",
192 argv[Ttext] ? argv[Ttext] : "unknown");
193 else if(!strncmp("JOIN", argv[Tcmd], 5)) {
194 if(argv[Ttext]!=NULL){
195 p = strchr(argv[Ttext], ' ');
199 argv[Tchan] = argv[Ttext];
200 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has joined %s",
201 argv[Tnick], argv[Tuser], argv[Ttext]);
202 } else if(!strncmp("PART", argv[Tcmd], 5)) {
203 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has left %s",
204 argv[Tnick], argv[Tuser], argv[Tchan]);
205 } else if(!strncmp("MODE", argv[Tcmd], 5))
206 snprintf(bufout, sizeof(bufout), "-!- %s changed mode/%s -> %s %s",
207 argv[Tnick], argv[Tcmd + 1],
208 argv[Tcmd + 2], argv[Tcmd + 3]);
209 else if(!strncmp("QUIT", argv[Tcmd], 5))
210 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has quit \"%s\"",
211 argv[Tnick], argv[Tuser],
212 argv[Ttext] ? argv[Ttext] : "");
213 else if(!strncmp("NICK", argv[Tcmd], 5))
214 snprintf(bufout, sizeof(bufout), "-!- %s changed nick to %s",
215 argv[Tnick], argv[Ttext]);
216 else if(!strncmp("TOPIC", argv[Tcmd], 6))
217 snprintf(bufout, sizeof(bufout), "-!- %s changed topic to \"%s\"",
218 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
219 else if(!strncmp("KICK", argv[Tcmd], 5))
220 snprintf(bufout, sizeof(bufout), "-!- %s kicked %s (\"%s\")",
221 argv[Tnick], argv[Targ],
222 argv[Ttext] ? argv[Ttext] : "");
223 else if(!strncmp("NOTICE", argv[Tcmd], 7))
224 snprintf(bufout, sizeof(bufout), "-!- \"%s\")",
225 argv[Ttext] ? argv[Ttext] : "");
226 else if(!strncmp("PRIVMSG", argv[Tcmd], 8)) snprintf(bufout, sizeof(bufout), "<%s> %s",
227 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
228 if(!argv[Tchan] || !strncmp(argv[Tchan], nick, strlen(nick)))
229 pout(argv[Tnick], bufout);
231 pout(argv[Tchan], bufout);
235 main(int argc, char *argv[])
240 struct sockaddr_in addr = { 0 };
244 nick = fullname = getenv("USER");
245 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
246 switch (argv[i][1]) {
248 fputs("usage: sic [-s server] [-p port] [-n nick]"
249 " [-k keyword] [-f fullname] [-v]\n", stderr);
256 port = atoi(argv[i++]);
262 password = argv[i++];
265 fullname = argv[i++];
268 fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
275 if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
276 fprintf(stderr, "sic: cannot connect server '%s'\n", server);
279 hp = gethostbyname(server);
280 addr.sin_family = AF_INET;
281 addr.sin_port = htons(port);
282 bcopy(hp->h_addr, &addr.sin_addr, hp->h_length);
283 if(connect(srv, (struct sockaddr *) &addr, sizeof(struct sockaddr_in))) {
285 fprintf(stderr, "sic: cannot connect server '%s'\n", server);
291 snprintf(bufout, sizeof(bufout),
292 "PASS %s\r\nNICK %s\r\nUSER %s localserver %s :%s\r\n",
293 password, nick, nick, server, fullname ? fullname : nick);
295 snprintf(bufout, sizeof(bufout), "NICK %s\r\nUSER %s localserver %s :%s\r\n",
296 nick, nick, server, fullname ? fullname : nick);
297 write(srv, bufout, strlen(bufout));
299 snprintf(ping, sizeof(ping), "PING %s\r\n", server);
301 setbuf(stdout, NULL); /* unbuffered stdout */
308 i = select(srv + 1, &rd, 0, 0, &tv);
312 perror("sic: error on select()");
315 if(time(NULL) - trespond >= PINGTIMEOUT) {
316 pout(server, "-!- sic shutting down: parseing timeout");
319 write(srv, ping, strlen(ping));
322 if(FD_ISSET(srv, &rd)) {
323 if(getline(srv, sizeof(bufin), bufin) == -1) {
324 perror("sic: remote server closed connection");
328 trespond = time(NULL);
330 if(FD_ISSET(0, &rd)) {
331 if(getline(0, sizeof(bufin), bufin) == -1) {
332 perror("sic: broken pipe");