1 /* (C)opyright MMV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
2 * (C)opyright MMV-MMVI Nico Golde <nico at ngolde dot de>
3 * See LICENSE file for license details.
7 #include <netinet/in.h>
14 #include <sys/socket.h>
17 #define PINGTIMEOUT 300
20 static char *host = "irc.oftc.net";
21 static unsigned short port = 6667;
22 static char *nick = NULL;
23 static char *fullname = NULL;
24 static char *password = NULL;
26 static char bufin[MAXMSG], bufout[MAXMSG];
27 static char channel[256];
29 static time_t trespond;
32 eprint(const char *errstr, ...) {
36 vfprintf(stderr, errstr, ap);
42 getline(int fd, unsigned int len, char *buf) {
47 if(read(fd, &c, sizeof(char)) != sizeof(char))
51 while(c != '\n' && i < len);
57 pout(char *channel, char *msg) {
58 static char timestr[18];
61 strftime(timestr, sizeof timestr, "%D %R", localtime(&t));
62 fprintf(stdout, "%-12.12s: %s %s\n", channel, timestr, msg);
66 privmsg(char *channel, char *msg) {
69 snprintf(bufout, sizeof bufout, "<%s> %s", nick, msg);
70 pout(channel, bufout);
71 snprintf(bufout, sizeof bufout, "PRIVMSG %s :%s\r\n", channel, msg);
72 write(srv, bufout, strlen(bufout));
82 privmsg(channel, msg);
85 if(!strncmp(msg + 1, "j ", 2) && (msg[3] == '#'))
86 snprintf(bufout, sizeof bufout, "JOIN %s\r\n", msg + 3);
87 else if(!strncmp(msg + 1, "l ", 2))
88 snprintf(bufout, sizeof bufout, "PART %s :sic - 250 LOC are too much!\r\n", msg + 3);
89 else if(!strncmp(msg + 1, "m ", 2)) {
90 if((p = strchr(msg + 3, ' ')))
95 else if(!strncmp(msg + 1, "s ", 2)) {
96 strncpy(channel, msg + 3, sizeof channel);
99 else if(!strncmp(msg + 1, "t ", 2)) {
100 if((p = strchr(msg + 3, ' ')))
102 snprintf(bufout, sizeof bufout, "TOPIC %s :%s\r\n", msg + 3, p);
105 snprintf(bufout, sizeof bufout, "%s\r\n", msg + 1);
106 write(srv, bufout, strlen(bufout));
110 parsesrv(char *msg) {
111 char *chan, *cmd, *p, *txt, *usr;
117 return; /* don't handle prefix-less server commands */
118 if(!(p = strchr(msg, ' ')))
123 if((p = strchr(usr, '!')))
125 for(p = cmd; *p; p++) /* remove CRLFs */
126 if(*p == '\r' || *p == '\n')
128 if((p = strchr(cmd, ':'))) {
132 if(!strncmp("PONG", cmd, 4))
134 if(!strncmp("PRIVMSG", cmd, 7) && txt) {
135 if(!(p = strchr(cmd, ' ')))
139 for(; *p && *p != ' '; p++);
141 snprintf(bufout, sizeof bufout, "<%s> %s", usr, txt);
144 else if(!strncmp("PING", cmd, 4) && txt) {
145 snprintf(bufout, sizeof bufout, "PONG %s\r\n", txt);
146 write(srv, bufout, strlen(bufout));
149 snprintf(bufout, sizeof bufout, ">< %s: %s", cmd, txt ? txt : "");
155 main(int argc, char *argv[]) {
159 static struct sockaddr_in addr; /* initially filled with 0's */
163 nick = fullname = getenv("USER");
164 for(i = 1; i < argc; i++)
165 if(!strncmp(argv[i], "-h", 3)) {
166 if(++i < argc) host = argv[i];
168 else if(!strncmp(argv[i], "-p", 3)) {
169 if(++i < argc) port = (unsigned short)atoi(argv[i]);
171 else if(!strncmp(argv[i], "-n", 3)) {
172 if(++i < argc) nick = argv[i];
174 else if(!strncmp(argv[i], "-k", 3)) {
175 if(++i < argc) password = argv[i];
177 else if(!strncmp(argv[i], "-f", 3)) {
178 if(++i < argc) fullname = argv[i];
180 else if(!strncmp(argv[i], "-v", 3))
181 eprint("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n");
183 eprint("usage: sic [-h host] [-p port] [-n nick]"
184 " [-k keyword] [-f fullname] [-v]\n");
187 if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0)
188 eprint("sic: cannot connect host '%s'\n", host);
189 if(NULL == (hp = gethostbyname(host)))
190 eprint("sic: cannot resolve hostname '%s'\n", host);
191 addr.sin_family = AF_INET;
192 addr.sin_port = htons(port);
193 memcpy(&addr.sin_addr, hp->h_addr, hp->h_length);
194 if(connect(srv, (struct sockaddr *) &addr, sizeof(struct sockaddr_in))) {
196 eprint("sic: cannot connect host '%s'\n", host);
200 snprintf(bufout, sizeof bufout,
201 "PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
202 password, nick, nick, host, fullname);
204 snprintf(bufout, sizeof bufout, "NICK %s\r\nUSER %s localhost %s :%s\r\n",
205 nick, nick, host, fullname);
206 write(srv, bufout, strlen(bufout));
207 snprintf(ping, sizeof ping, "PING %s\r\n", host);
209 setbuf(stdout, NULL); /* unbuffered stdout */
211 for(;;) { /* main loop */
217 i = select(srv + 1, &rd, 0, 0, &tv);
221 eprint("sic: error on select()");
224 if(time(NULL) - trespond >= PINGTIMEOUT)
225 eprint("sic shutting down: parse timeout");
226 write(srv, ping, strlen(ping));
229 if(FD_ISSET(srv, &rd)) {
230 if(getline(srv, sizeof bufin, bufin) == -1)
231 eprint("sic: remote host closed connection");
233 trespond = time(NULL);
235 if(FD_ISSET(0, &rd)) {
236 if(getline(0, sizeof bufin, bufin) == -1)
237 eprint("sic: broken pipe");