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], ' ')))
82 snprintf(bufout, sizeof(bufout), "JOIN %s\r\n", &msg[3]);
84 privmsg(&msg[3], p + 1);
90 snprintf(bufout, sizeof(bufout), "PART %s :%s\r\n", &msg[3], p);
92 snprintf(bufout, sizeof(bufout), "PART %s :sic\r\n", &msg[3]);
98 strncpy(channel, &msg[3], sizeof(channel));
102 snprintf(bufout, sizeof(bufout), "TOPIC %s :%s\r\n", &msg[3], p);
105 snprintf(bufout, sizeof(bufout), "%s\r\n", &msg[1]);
108 write(srv, bufout, strlen(bufout));
112 tokenize(char **result, unsigned int reslen, char *str, char delim)
119 for(n = str; *n == delim; n++);
121 for(i = 0; *n != 0;) {
132 if((i < reslen) && (p < n) && strlen(p))
134 return i; /* number of tokens */
140 char *argv[Tlast], *cmd, *p;
145 for(i = 0; i < Tlast; i++)
149 <bufout> ::= [':' <prefix> <SPACE> ] <command> <params> <crlf>
150 <prefix> ::= <servername> | <nick> [ '!' <user> ] [ '@' <host> ]
151 <command> ::= <letter> { <letter> } | <number> <number> <number>
152 <SPACE> ::= ' ' { ' ' }
153 <params> ::= <SPACE> [ ':' <trailing> | <middle> <params> ]
154 <middle> ::= <Any *non-empty* sequence of octets not including SPACE
155 or NUL or CR or LF, the first of which may not be ':'>
156 <trailing> ::= <Any, possibly *empty*, sequence of octets not including NUL or CR or LF>
159 if(msg[0] == ':') { /* check prefix */
160 p = strchr(msg, ' ');
162 for(++p; *p == ' '; p++);
164 argv[Tnick] = &msg[1];
165 if((p = strchr(msg, '!'))) {
173 for(p = cmd; p && *p != 0; p++)
174 if(*p == '\r' || *p == '\n')
177 if((p = strchr(cmd, ':'))) {
181 tokenize(&argv[Tcmd], Tlast - Tcmd, cmd, ' ');
183 if(!strncmp("PONG", argv[Tcmd], 5)) {
185 } else if(!strncmp("PING", argv[Tcmd], 5)) {
186 snprintf(bufout, sizeof(bufout), "PONG %s\r\n", argv[Ttext]);
187 write(srv, bufout, strlen(bufout));
189 } else if(!argv[Tnick] || !argv[Tuser]) { /* server command */
190 snprintf(bufout, sizeof(bufout), "%s", argv[Ttext] ? argv[Ttext] : "");
191 pout((char *)host, bufout);
193 } else if(!strncmp("ERROR", argv[Tcmd], 6))
194 snprintf(bufout, sizeof(bufout), "-!- error %s",
195 argv[Ttext] ? argv[Ttext] : "unknown");
196 else if(!strncmp("JOIN", argv[Tcmd], 5)) {
197 if(argv[Ttext]!=NULL){
198 p = strchr(argv[Ttext], ' ');
202 argv[Tchan] = argv[Ttext];
203 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has joined %s",
204 argv[Tnick], argv[Tuser], argv[Ttext]);
205 } else if(!strncmp("PART", argv[Tcmd], 5)) {
206 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has left %s",
207 argv[Tnick], argv[Tuser], argv[Tchan]);
208 } else if(!strncmp("MODE", argv[Tcmd], 5))
209 snprintf(bufout, sizeof(bufout), "-!- %s changed mode/%s -> %s %s",
210 argv[Tnick], argv[Tcmd + 1],
211 argv[Tcmd + 2], argv[Tcmd + 3]);
212 else if(!strncmp("QUIT", argv[Tcmd], 5))
213 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has quit \"%s\"",
214 argv[Tnick], argv[Tuser],
215 argv[Ttext] ? argv[Ttext] : "");
216 else if(!strncmp("NICK", argv[Tcmd], 5))
217 snprintf(bufout, sizeof(bufout), "-!- %s changed nick to %s",
218 argv[Tnick], argv[Ttext]);
219 else if(!strncmp("TOPIC", argv[Tcmd], 6))
220 snprintf(bufout, sizeof(bufout), "-!- %s changed topic to \"%s\"",
221 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
222 else if(!strncmp("KICK", argv[Tcmd], 5))
223 snprintf(bufout, sizeof(bufout), "-!- %s kicked %s (\"%s\")",
224 argv[Tnick], argv[Targ],
225 argv[Ttext] ? argv[Ttext] : "");
226 else if(!strncmp("NOTICE", argv[Tcmd], 7))
227 snprintf(bufout, sizeof(bufout), "-!- \"%s\")",
228 argv[Ttext] ? argv[Ttext] : "");
229 else if(!strncmp("PRIVMSG", argv[Tcmd], 8)) snprintf(bufout, sizeof(bufout), "<%s> %s",
230 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
231 if(!argv[Tchan] || !strncmp(argv[Tchan], nick, strlen(nick)))
232 pout(argv[Tnick], bufout);
234 pout(argv[Tchan], bufout);
238 main(int argc, char *argv[])
243 struct sockaddr_in addr = { 0 };
246 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
247 switch (argv[i][1]) {
249 fputs("usage: sic [-v]\n", stderr);
253 fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
260 if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
261 fprintf(stderr, "sic: cannot connect server '%s'\n", host);
264 hp = gethostbyname(host);
265 addr.sin_family = AF_INET;
266 addr.sin_port = htons(port);
267 bcopy(hp->h_addr, &addr.sin_addr, hp->h_length);
268 if(connect(srv, (struct sockaddr *) &addr, sizeof(struct sockaddr_in))) {
270 fprintf(stderr, "sic: cannot connect server '%s'\n", host);
276 snprintf(bufout, sizeof(bufout),
277 "PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
278 password, nick, nick, host, fullname ? fullname : nick);
280 snprintf(bufout, sizeof(bufout), "NICK %s\r\nUSER %s localhost %s :%s\r\n",
281 nick, nick, host, fullname ? fullname : nick);
282 write(srv, bufout, strlen(bufout));
285 setbuf(stdout, NULL); /* unbuffered stdout */
292 i = select(srv + 1, &rd, 0, 0, &tv);
296 perror("sic: error on select()");
299 if(time(NULL) - trespond >= PINGTIMEOUT) {
300 pout((char *)host, "-!- sic shutting down: parseing timeout");
303 write(srv, ping, strlen(ping));
306 if(FD_ISSET(srv, &rd)) {
307 if(getline(srv, sizeof(bufin), bufin) == -1) {
308 perror("sic: remote host closed connection");
312 trespond = time(NULL);
314 if(FD_ISSET(0, &rd)) {
315 if(getline(0, sizeof(bufin), bufin) == -1) {
316 perror("sic: broken pipe");