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 };
22 static const char *ping = "PING irc.oftc.net\r\n";
23 static const char *host = "irc.oftc.net";
24 static const int port = 6667;
25 static const char *nick = "arg";
26 static const char *fullname = "Anselm R. Garbe";
27 static const 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, "%s: %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));
74 privmsg(channel, msg);
77 if((p = strchr(&msg[3], ' ')))
81 snprintf(bufout, sizeof(bufout), "%s\r\n", &msg[1]);
85 snprintf(bufout, sizeof(bufout), "JOIN %s\r\n", &msg[3]);
87 privmsg(&msg[3], p + 1);
93 snprintf(bufout, sizeof(bufout), "PART %s :%s\r\n", &msg[3], p);
95 snprintf(bufout, sizeof(bufout), "PART %s :sic\r\n", &msg[3]);
101 strncpy(channel, &msg[3], sizeof(channel));
104 snprintf(bufout, sizeof(bufout), "TOPIC %s :%s\r\n", &msg[3], p);
107 write(srv, bufout, strlen(bufout));
111 tokenize(char **result, unsigned int reslen, char *str, char delim)
118 for(n = str; *n == delim; n++);
120 for(i = 0; *n != 0;) {
131 if((i < reslen) && (p < n) && strlen(p))
133 return i; /* number of tokens */
139 char *argv[Tlast], *cmd, *p;
144 for(i = 0; i < Tlast; i++)
148 <bufout> ::= [':' <prefix> <SPACE> ] <command> <params> <crlf>
149 <prefix> ::= <servername> | <nick> [ '!' <user> ] [ '@' <host> ]
150 <command> ::= <letter> { <letter> } | <number> <number> <number>
151 <SPACE> ::= ' ' { ' ' }
152 <params> ::= <SPACE> [ ':' <trailing> | <middle> <params> ]
153 <middle> ::= <Any *non-empty* sequence of octets not including SPACE
154 or NUL or CR or LF, the first of which may not be ':'>
155 <trailing> ::= <Any, possibly *empty*, sequence of octets not including NUL or CR or LF>
158 if(msg[0] == ':') { /* check prefix */
159 p = strchr(msg, ' ');
161 for(++p; *p == ' '; p++);
163 argv[Tnick] = &msg[1];
164 if((p = strchr(msg, '!'))) {
172 for(p = cmd; p && *p != 0; p++)
173 if(*p == '\r' || *p == '\n')
176 if((p = strchr(cmd, ':'))) {
180 tokenize(&argv[Tcmd], Tlast - Tcmd, cmd, ' ');
182 if(!strncmp("PONG", argv[Tcmd], 5)) {
184 } else if(!strncmp("PING", argv[Tcmd], 5)) {
185 snprintf(bufout, sizeof(bufout), "PONG %s\r\n", argv[Ttext]);
186 write(srv, bufout, strlen(bufout));
188 } else if(!argv[Tnick] || !argv[Tuser]) { /* server command */
189 snprintf(bufout, sizeof(bufout), "%s", argv[Ttext] ? argv[Ttext] : "");
190 pout((char *)host, bufout);
192 } else if(!strncmp("ERROR", argv[Tcmd], 6))
193 snprintf(bufout, sizeof(bufout), "-!- error %s",
194 argv[Ttext] ? argv[Ttext] : "unknown");
195 else if(!strncmp("JOIN", argv[Tcmd], 5)) {
196 if(argv[Ttext]!=NULL){
197 p = strchr(argv[Ttext], ' ');
201 argv[Tchan] = argv[Ttext];
202 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has joined %s",
203 argv[Tnick], argv[Tuser], argv[Ttext]);
204 } else if(!strncmp("PART", argv[Tcmd], 5)) {
205 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has left %s",
206 argv[Tnick], argv[Tuser], argv[Tchan]);
207 } else if(!strncmp("MODE", argv[Tcmd], 5))
208 snprintf(bufout, sizeof(bufout), "-!- %s changed mode/%s -> %s %s",
209 argv[Tnick], argv[Tcmd + 1],
210 argv[Tcmd + 2], argv[Tcmd + 3]);
211 else if(!strncmp("QUIT", argv[Tcmd], 5))
212 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has quit \"%s\"",
213 argv[Tnick], argv[Tuser],
214 argv[Ttext] ? argv[Ttext] : "");
215 else if(!strncmp("NICK", argv[Tcmd], 5))
216 snprintf(bufout, sizeof(bufout), "-!- %s changed nick to %s",
217 argv[Tnick], argv[Ttext]);
218 else if(!strncmp("TOPIC", argv[Tcmd], 6))
219 snprintf(bufout, sizeof(bufout), "-!- %s changed topic to \"%s\"",
220 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
221 else if(!strncmp("KICK", argv[Tcmd], 5))
222 snprintf(bufout, sizeof(bufout), "-!- %s kicked %s (\"%s\")",
223 argv[Tnick], argv[Targ],
224 argv[Ttext] ? argv[Ttext] : "");
225 else if(!strncmp("NOTICE", argv[Tcmd], 7))
226 snprintf(bufout, sizeof(bufout), "-!- \"%s\")",
227 argv[Ttext] ? argv[Ttext] : "");
228 else if(!strncmp("PRIVMSG", argv[Tcmd], 8)) snprintf(bufout, sizeof(bufout), "<%s> %s",
229 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
230 if(!argv[Tchan] || !strncmp(argv[Tchan], nick, strlen(nick)))
231 pout(argv[Tnick], bufout);
233 pout(argv[Tchan], bufout);
237 main(int argc, char *argv[])
242 struct sockaddr_in addr = { 0 };
245 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
246 switch (argv[i][1]) {
248 fputs("usage: sic [-v]\n", stderr);
252 fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
259 if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
260 fprintf(stderr, "sic: cannot connect server '%s'\n", host);
263 hp = gethostbyname(host);
264 addr.sin_family = AF_INET;
265 addr.sin_port = htons(port);
266 bcopy(hp->h_addr, &addr.sin_addr, hp->h_length);
267 if(connect(srv, (struct sockaddr *) &addr, sizeof(struct sockaddr_in))) {
269 fprintf(stderr, "sic: cannot connect server '%s'\n", host);
275 snprintf(bufout, sizeof(bufout),
276 "PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
277 password, nick, nick, host, fullname ? fullname : nick);
279 snprintf(bufout, sizeof(bufout), "NICK %s\r\nUSER %s localhost %s :%s\r\n",
280 nick, nick, host, fullname ? fullname : nick);
281 write(srv, bufout, strlen(bufout));
284 setbuf(stdout, NULL); /* unbuffered stdout */
291 i = select(srv + 1, &rd, 0, 0, &tv);
295 perror("sic: error on select()");
298 if(time(NULL) - trespond >= PINGTIMEOUT) {
299 pout((char *)host, "-!- sic shutting down: parseing timeout");
302 write(srv, ping, strlen(ping));
305 if(FD_ISSET(srv, &rd)) {
306 if(getline(srv, sizeof(bufin), bufin) == -1) {
307 perror("sic: remote host closed connection");
311 trespond = time(NULL);
313 if(FD_ISSET(0, &rd)) {
314 if(getline(0, sizeof(bufin), bufin) == -1) {
315 perror("sic: broken pipe");