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.freenode.net\r\n";
23 static const char *host = "irc.freenode.net";
24 static const int port = 6667;
25 static const char *nick = "garbeam";
26 static const char *fullname = "Anselm R. Garbe";
27 static const char *password = NULL;
29 static char bufin[MAXMSG], bufout[MAXMSG];
31 static time_t trespond;
34 getline(int fd, unsigned int len, char *buf)
39 if(read(fd, &c, sizeof(char)) != sizeof(char))
43 while(c != '\n' && i < len);
49 pout(char *channel, char *msg)
51 static char timestr[18];
54 strftime(timestr, sizeof(timestr), "%F %R", localtime(&t));
55 fprintf(stdout, "%s: %s %s\n", channel, timestr, msg);
59 privmsg(char *channel, char *msg)
61 snprintf(bufout, sizeof(bufout), "<%s> %s", nick, msg);
62 pout(channel, bufout);
63 snprintf(bufout, sizeof(bufout), "PRIVMSG %s :%s\r\n", channel, msg);
64 write(srv, bufout, strlen(bufout));
72 if((p = strchr(msg, ' ')))
74 if(msg[0] != '/' && msg[0] != 0) {
78 if((p = strchr(&msg[3], ' ')))
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]);
96 snprintf(bufout, sizeof(bufout), "TOPIC %s :%s\r\n", &msg[3], p);
99 snprintf(bufout, sizeof(bufout), "%s\r\n", &msg[1]);
102 write(srv, bufout, strlen(bufout));
106 tokenize(char **result, unsigned int reslen, char *str, char delim)
113 for(n = str; *n == delim; n++);
115 for(i = 0; *n != 0;) {
126 if((i < reslen) && (p < n) && strlen(p))
128 return i; /* number of tokens */
134 char *argv[Tlast], *cmd, *p;
139 for(i = 0; i < Tlast; i++)
143 <bufout> ::= [':' <prefix> <SPACE> ] <command> <params> <crlf>
144 <prefix> ::= <servername> | <nick> [ '!' <user> ] [ '@' <host> ]
145 <command> ::= <letter> { <letter> } | <number> <number> <number>
146 <SPACE> ::= ' ' { ' ' }
147 <params> ::= <SPACE> [ ':' <trailing> | <middle> <params> ]
148 <middle> ::= <Any *non-empty* sequence of octets not including SPACE
149 or NUL or CR or LF, the first of which may not be ':'>
150 <trailing> ::= <Any, possibly *empty*, sequence of octets not including NUL or CR or LF>
153 if(msg[0] == ':') { /* check prefix */
154 p = strchr(msg, ' ');
156 for(++p; *p == ' '; p++);
158 argv[Tnick] = &msg[1];
159 if((p = strchr(msg, '!'))) {
167 for(p = cmd; p && *p != 0; p++)
168 if(*p == '\r' || *p == '\n')
171 if((p = strchr(cmd, ':'))) {
175 tokenize(&argv[Tcmd], Tlast - Tcmd, cmd, ' ');
177 if(!strncmp("PONG", argv[Tcmd], 5)) {
179 } else if(!strncmp("PING", argv[Tcmd], 5)) {
180 snprintf(bufout, sizeof(bufout), "PONG %s\r\n", argv[Ttext]);
181 write(srv, bufout, strlen(bufout));
183 } else if(!argv[Tnick] || !argv[Tuser]) { /* server command */
184 snprintf(bufout, sizeof(bufout), "%s", argv[Ttext] ? argv[Ttext] : "");
185 pout((char *)host, bufout);
187 } else if(!strncmp("ERROR", argv[Tcmd], 6))
188 snprintf(bufout, sizeof(bufout), "-!- error %s",
189 argv[Ttext] ? argv[Ttext] : "unknown");
190 else if(!strncmp("JOIN", argv[Tcmd], 5)) {
191 if(argv[Ttext]!=NULL){
192 p = strchr(argv[Ttext], ' ');
196 argv[Tchan] = argv[Ttext];
197 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has joined %s",
198 argv[Tnick], argv[Tuser], argv[Ttext]);
199 } else if(!strncmp("PART", argv[Tcmd], 5)) {
200 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has left %s",
201 argv[Tnick], argv[Tuser], argv[Tchan]);
202 } else if(!strncmp("MODE", argv[Tcmd], 5))
203 snprintf(bufout, sizeof(bufout), "-!- %s changed mode/%s -> %s %s",
204 argv[Tnick], argv[Tcmd + 1],
205 argv[Tcmd + 2], argv[Tcmd + 3]);
206 else if(!strncmp("QUIT", argv[Tcmd], 5))
207 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has quit \"%s\"",
208 argv[Tnick], argv[Tuser],
209 argv[Ttext] ? argv[Ttext] : "");
210 else if(!strncmp("NICK", argv[Tcmd], 5))
211 snprintf(bufout, sizeof(bufout), "-!- %s changed nick to %s",
212 argv[Tnick], argv[Ttext]);
213 else if(!strncmp("TOPIC", argv[Tcmd], 6))
214 snprintf(bufout, sizeof(bufout), "-!- %s changed topic to \"%s\"",
215 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
216 else if(!strncmp("KICK", argv[Tcmd], 5))
217 snprintf(bufout, sizeof(bufout), "-!- %s kicked %s (\"%s\")",
218 argv[Tnick], argv[Targ],
219 argv[Ttext] ? argv[Ttext] : "");
220 else if(!strncmp("NOTICE", argv[Tcmd], 7))
221 snprintf(bufout, sizeof(bufout), "-!- \"%s\")",
222 argv[Ttext] ? argv[Ttext] : "");
223 else if(!strncmp("PRIVMSG", argv[Tcmd], 8))
224 snprintf(bufout, sizeof(bufout), "<%s> %s",
225 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
226 if(!argv[Tchan] || !strncmp(argv[Tchan], nick, strlen(nick)))
227 pout(argv[Tnick], bufout);
229 pout(argv[Tchan], bufout);
236 struct sockaddr_in addr = { 0 };
240 if((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
242 hp = gethostbyname(host);
243 addr.sin_family = AF_INET;
244 addr.sin_port = htons(port);
245 bcopy(hp->h_addr, &addr.sin_addr, hp->h_length);
247 if(connect(fd, (struct sockaddr *) &addr,
248 sizeof(struct sockaddr_in))) {
256 main(int argc, char *argv[])
262 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
263 switch (argv[i][1]) {
265 fputs("usage: sic [-v]\n", stderr);
269 fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
275 if((srv = tcpopen()) == -1) {
276 fprintf(stderr, "sic: cannot connect server '%s'\n", host);
281 snprintf(bufout, sizeof(bufout),
282 "PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
283 password, nick, nick, host, fullname ? fullname : nick);
285 snprintf(bufout, sizeof(bufout), "NICK %s\r\nUSER %s localhost %s :%s\r\n",
286 nick, nick, host, fullname ? fullname : nick);
287 write(srv, bufout, strlen(bufout));
295 i = select(srv + 1, &rd, 0, 0, &tv);
299 perror("sic: error on select()");
302 if(time(NULL) - trespond >= PINGTIMEOUT) {
303 pout((char *)host, "-!- sic shutting down: parseing timeout");
306 write(srv, ping, strlen(ping));
309 if(FD_ISSET(srv, &rd)) {
310 if(getline(srv, sizeof(bufin), bufin) == -1) {
311 perror("sic: remote host closed connection");
315 trespond = time(NULL);
317 if(FD_ISSET(0, &rd)) {
318 if(getline(0, sizeof(bufin), bufin) == -1) {
319 perror("sic: broken pipe");