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>
15 #include <sys/socket.h>
18 #define PINGTIMEOUT 300
21 enum { Tnick, Tuser, Tcmd, Tchan, Targ, Ttext, Tlast };
23 static char *server = "irc.oftc.net";
24 static unsigned short port = 6667;
25 static char *nick = NULL;
26 static char *fullname = NULL;
27 static char *password = NULL;
29 static char bufin[MAXMSG], bufout[MAXMSG];
30 static char channel[256];
32 static time_t trespond;
35 getline(int fd, unsigned int len, char *buf)
40 if(read(fd, &c, sizeof(char)) != sizeof(char))
44 while(c != '\n' && i < len);
50 pout(char *channel, char *msg)
52 static char timestr[18];
55 strftime(timestr, sizeof(timestr), "%a %R", localtime(&t));
56 fprintf(stdout, "%-8.8s: %s %s\n", channel, timestr, msg);
60 privmsg(char *channel, char *msg)
62 snprintf(bufout, sizeof(bufout), "<%s> %s", nick, msg);
63 pout(channel, bufout);
64 snprintf(bufout, sizeof(bufout), "PRIVMSG %s :%s\r\n", channel, msg);
65 write(srv, bufout, strlen(bufout));
76 privmsg(channel, msg);
79 if(!strncmp(msg + 1, "j ", 2) && (msg[3] == '#'))
80 snprintf(bufout, sizeof(bufout), "JOIN %s\r\n", &msg[3]);
81 else if(!strncmp(msg + 1, "l ", 2))
82 snprintf(bufout, sizeof(bufout), "PART %s :sic\r\n", &msg[3]);
83 else if(!strncmp(msg + 1, "m ", 2)) {
87 else if(!strncmp(msg + 1, "s ", 2)) {
88 strncpy(channel, &msg[3], sizeof(channel));
91 else if(!strncmp(msg + 1, "t ", 2)) {
92 if(p = strchr(&msg[3], ' '))
94 snprintf(bufout, sizeof(bufout), "TOPIC %s :%s\r\n", &msg[3], p);
97 snprintf(bufout, sizeof(bufout), "%s\r\n", &msg[1]);
98 write(srv, bufout, strlen(bufout));
102 tokenize(char **result, unsigned int reslen, char *str, char delim)
109 for(n = str; *n == delim; n++);
111 for(i = 0; *n != 0;) {
122 if((i < reslen) && (p < n) && strlen(p))
124 return i; /* number of tokens */
130 char *argv[Tlast], *cmd, *p;
135 for(i = 0; i < Tlast; i++)
139 <bufout> ::= [':' <prefix> <SPACE> ] <command> <params> <crlf>
140 <prefix> ::= <servername> | <nick> [ '!' <user> ] [ '@' <server> ]
141 <command> ::= <letter> { <letter> } | <number> <number> <number>
142 <SPACE> ::= ' ' { ' ' }
143 <params> ::= <SPACE> [ ':' <trailing> | <middle> <params> ]
144 <middle> ::= <Any *non-empty* sequence of octets not including SPACE
145 or NUL or CR or LF, the first of which may not be ':'>
146 <trailing> ::= <Any, possibly *empty*, sequence of octets not including NUL or CR or LF>
149 if(msg[0] == ':') { /* check prefix */
150 p = strchr(msg, ' ');
152 for(++p; *p == ' '; p++);
154 argv[Tnick] = &msg[1];
155 if((p = strchr(msg, '!'))) {
163 for(p = cmd; p && *p != 0; p++)
164 if(*p == '\r' || *p == '\n')
167 if((p = strchr(cmd, ':'))) {
171 tokenize(&argv[Tcmd], Tlast - Tcmd, cmd, ' ');
173 if(!strncmp("PONG", argv[Tcmd], 5)) {
175 } else if(!strncmp("PING", argv[Tcmd], 5)) {
176 snprintf(bufout, sizeof(bufout), "PONG %s\r\n", argv[Ttext]);
177 write(srv, bufout, strlen(bufout));
179 } else if(!argv[Tnick] || !argv[Tuser]) { /* server command */
180 snprintf(bufout, sizeof(bufout), "%s", argv[Ttext] ? argv[Ttext] : "");
181 pout(server, bufout);
183 } else if(!strncmp("ERROR", argv[Tcmd], 6))
184 snprintf(bufout, sizeof(bufout), "-!- error %s",
185 argv[Ttext] ? argv[Ttext] : "unknown");
186 else if(!strncmp("JOIN", argv[Tcmd], 5)) {
187 if(argv[Ttext]!=NULL){
188 p = strchr(argv[Ttext], ' ');
192 argv[Tchan] = argv[Ttext];
193 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has joined %s",
194 argv[Tnick], argv[Tuser], argv[Ttext]);
195 } else if(!strncmp("PART", argv[Tcmd], 5)) {
196 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has left %s",
197 argv[Tnick], argv[Tuser], argv[Tchan]);
198 } else if(!strncmp("MODE", argv[Tcmd], 5))
199 snprintf(bufout, sizeof(bufout), "-!- %s changed mode/%s -> %s %s",
200 argv[Tnick], argv[Tcmd + 1],
201 argv[Tcmd + 2], argv[Tcmd + 3]);
202 else if(!strncmp("QUIT", argv[Tcmd], 5))
203 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has quit \"%s\"",
204 argv[Tnick], argv[Tuser],
205 argv[Ttext] ? argv[Ttext] : "");
206 else if(!strncmp("NICK", argv[Tcmd], 5))
207 snprintf(bufout, sizeof(bufout), "-!- %s changed nick to %s",
208 argv[Tnick], argv[Ttext]);
209 else if(!strncmp("TOPIC", argv[Tcmd], 6))
210 snprintf(bufout, sizeof(bufout), "-!- %s changed topic to \"%s\"",
211 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
212 else if(!strncmp("KICK", argv[Tcmd], 5))
213 snprintf(bufout, sizeof(bufout), "-!- %s kicked %s (\"%s\")",
214 argv[Tnick], argv[Targ],
215 argv[Ttext] ? argv[Ttext] : "");
216 else if(!strncmp("NOTICE", argv[Tcmd], 7))
217 snprintf(bufout, sizeof(bufout), "-!- \"%s\")",
218 argv[Ttext] ? argv[Ttext] : "");
219 else if(!strncmp("PRIVMSG", argv[Tcmd], 8))
220 snprintf(bufout, sizeof(bufout), "<%s> %s",
221 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
222 if(!argv[Tchan] || !strncmp(argv[Tchan], nick, strlen(nick)))
223 pout(argv[Tnick], bufout);
225 pout(argv[Tchan], bufout);
229 main(int argc, char *argv[])
234 static struct sockaddr_in addr; /* initially filled with 0's */
238 nick = fullname = getenv("USER");
239 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
240 switch (argv[i][1]) {
242 fputs("usage: sic [-s server] [-p port] [-n nick]"
243 " [-k keyword] [-f fullname] [-v]\n", stderr);
250 port = (unsigned short)atoi(argv[++i]);
256 password = argv[++i];
259 fullname = argv[++i];
262 fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
269 if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
270 fprintf(stderr, "sic: cannot connect server '%s'\n", server);
273 if (NULL == (hp = gethostbyname(server))) {
274 fprintf(stderr, "sic: cannot resolve hostname '%s'\n", server);
277 addr.sin_family = AF_INET;
278 addr.sin_port = htons(port);
279 memcpy(&addr.sin_addr, hp->h_addr, hp->h_length);
280 if(connect(srv, (struct sockaddr *) &addr, sizeof(struct sockaddr_in))) {
282 fprintf(stderr, "sic: cannot connect server '%s'\n", server);
288 snprintf(bufout, sizeof(bufout),
289 "PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
290 password, nick, nick, server, fullname);
292 snprintf(bufout, sizeof(bufout), "NICK %s\r\nUSER %s localhost %s :%s\r\n",
293 nick, nick, server, fullname);
294 write(srv, bufout, strlen(bufout));
296 snprintf(ping, sizeof(ping), "PING %s\r\n", server);
298 setbuf(stdout, NULL); /* unbuffered stdout */
305 i = select(srv + 1, &rd, 0, 0, &tv);
309 perror("sic: error on select()");
312 if(time(NULL) - trespond >= PINGTIMEOUT) {
313 pout(server, "-!- sic shutting down: parseing timeout");
316 write(srv, ping, strlen(ping));
319 if(FD_ISSET(srv, &rd)) {
320 if(getline(srv, sizeof(bufin), bufin) == -1) {
321 perror("sic: remote server closed connection");
325 trespond = time(NULL);
327 if(FD_ISSET(0, &rd)) {
328 if(getline(0, sizeof(bufin), bufin) == -1) {
329 perror("sic: broken pipe");