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>
13 #include <sys/socket.h>
16 #define PINGTIMEOUT 300
19 static char *host = "irc.oftc.net";
20 static unsigned short port = 6667;
21 static char *nick = NULL;
22 static char *fullname = NULL;
23 static char *password = NULL;
25 static char bufin[MAXMSG], bufout[MAXMSG];
26 static char channel[256];
28 static time_t trespond;
31 getline(int fd, unsigned int len, char *buf) {
36 if(read(fd, &c, sizeof(char)) != sizeof(char))
40 while(c != '\n' && i < len);
46 pout(char *channel, char *msg) {
47 static char timestr[18];
50 strftime(timestr, sizeof timestr, "%D %R", localtime(&t));
51 fprintf(stdout, "%-12.12s: %s %s\n", channel, timestr, msg);
55 privmsg(char *channel, char *msg) {
58 snprintf(bufout, sizeof bufout, "<%s> %s", nick, msg);
59 pout(channel, bufout);
60 snprintf(bufout, sizeof bufout, "PRIVMSG %s :%s\r\n", channel, msg);
61 write(srv, bufout, strlen(bufout));
71 privmsg(channel, msg);
74 if(!strncmp(msg + 1, "j ", 2) && (msg[3] == '#'))
75 snprintf(bufout, sizeof bufout, "JOIN %s\r\n", msg + 3);
76 else if(!strncmp(msg + 1, "l ", 2))
77 snprintf(bufout, sizeof bufout, "PART %s :sic - 250 LOC are too much!\r\n", msg + 3);
78 else if(!strncmp(msg + 1, "m ", 2)) {
79 if((p = strchr(msg + 3, ' ')))
84 else if(!strncmp(msg + 1, "s ", 2)) {
85 strncpy(channel, msg + 3, sizeof channel);
88 else if(!strncmp(msg + 1, "t ", 2)) {
89 if((p = strchr(msg + 3, ' ')))
91 snprintf(bufout, sizeof bufout, "TOPIC %s :%s\r\n", msg + 3, p);
94 snprintf(bufout, sizeof bufout, "%s\r\n", msg + 1);
95 write(srv, bufout, strlen(bufout));
100 char *chan, *cmd, *p, *txt, *usr;
106 return; /* don't handle prefix-less server commands */
107 if(!(p = strchr(msg, ' ')))
112 if((p = strchr(usr, '!')))
114 for(p = cmd; *p; p++) /* remove CRLFs */
115 if(*p == '\r' || *p == '\n')
117 if((p = strchr(cmd, ':'))) {
121 if(!strncmp("PONG", cmd, 4))
123 if(!strncmp("PRIVMSG", cmd, 7) && txt) {
124 if(!(p = strchr(cmd, ' ')))
128 for(; *p && *p != ' '; p++);
130 snprintf(bufout, sizeof bufout, "<%s> %s", usr, txt);
133 else if(!strncmp("PING", cmd, 4) && txt) {
134 snprintf(bufout, sizeof bufout, "PONG %s\r\n", txt);
135 write(srv, bufout, strlen(bufout));
138 snprintf(bufout, sizeof bufout, ">< %s: %s", cmd, txt ? txt : "");
144 main(int argc, char *argv[]) {
148 static struct sockaddr_in addr; /* initially filled with 0's */
152 nick = fullname = getenv("USER");
153 for(i = 1; i < argc; i++)
154 if(!strncmp(argv[i], "-h", 3)) {
155 if(++i < argc) host = argv[i];
157 else if(!strncmp(argv[i], "-p", 3)) {
158 if(++i < argc) port = (unsigned short)atoi(argv[i]);
160 else if(!strncmp(argv[i], "-n", 3)) {
161 if(++i < argc) nick = argv[i];
163 else if(!strncmp(argv[i], "-k", 3)) {
164 if(++i < argc) password = argv[i];
166 else if(!strncmp(argv[i], "-f", 3)) {
167 if(++i < argc) fullname = argv[i];
169 else if(!strncmp(argv[i], "-v", 3)) {
170 fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
174 fputs("usage: sic [-h host] [-p port] [-n nick]"
175 " [-k keyword] [-f fullname] [-v]\n", stderr);
180 if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
181 fprintf(stderr, "sic: cannot connect host '%s'\n", host);
184 if (NULL == (hp = gethostbyname(host))) {
185 fprintf(stderr, "sic: cannot resolve hostname '%s'\n", host);
188 addr.sin_family = AF_INET;
189 addr.sin_port = htons(port);
190 memcpy(&addr.sin_addr, hp->h_addr, hp->h_length);
191 if(connect(srv, (struct sockaddr *) &addr, sizeof(struct sockaddr_in))) {
193 fprintf(stderr, "sic: cannot connect host '%s'\n", host);
198 snprintf(bufout, sizeof bufout,
199 "PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
200 password, nick, nick, host, fullname);
202 snprintf(bufout, sizeof bufout, "NICK %s\r\nUSER %s localhost %s :%s\r\n",
203 nick, nick, host, fullname);
204 write(srv, bufout, strlen(bufout));
205 snprintf(ping, sizeof ping, "PING %s\r\n", host);
207 setbuf(stdout, NULL); /* unbuffered stdout */
209 for(;;) { /* main loop */
215 i = select(srv + 1, &rd, 0, 0, &tv);
219 perror("sic: error on select()");
222 if(time(NULL) - trespond >= PINGTIMEOUT) {
223 pout(host, "-!- 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 perror("sic: remote host closed connection");
235 trespond = time(NULL);
237 if(FD_ISSET(0, &rd)) {
238 if(getline(0, sizeof bufin, bufin) == -1) {
239 perror("sic: broken pipe");