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 enum { Tnick, Tuser, Tcmd, Tchan, Targ, Ttext, Tlast };
21 static char *server = "irc.oftc.net";
22 static unsigned short port = 6667;
23 static char *nick = NULL;
24 static char *fullname = NULL;
25 static char *password = NULL;
27 static char bufin[MAXMSG], bufout[MAXMSG];
28 static char channel[256];
30 static time_t trespond;
33 getline(int fd, unsigned int len, char *buf) {
38 if(read(fd, &c, sizeof(char)) != sizeof(char))
42 while(c != '\n' && i < len);
48 pout(char *channel, char *msg) {
49 static char timestr[18];
52 strftime(timestr, sizeof timestr, "%F %R", localtime(&t));
53 fprintf(stdout, "%-8.8s: %s %s\n", channel, timestr, msg);
57 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 - 300 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));
99 tokenize(char **result, unsigned int reslen, char *str, char delim) {
105 for(n = str; *n == delim; n++);
107 for(i = 0; *n != 0;) {
118 if((i < reslen) && (p < n) && strlen(p))
120 return i; /* number of tokens */
124 parsesrv(char *msg) {
125 char *argv[Tlast], *cmd, *p;
130 for(i = 0; i < Tlast; i++)
132 /* <bufout> ::= [':' <prefix> <SPACE> ] <command> <params> <crlf>
133 * <prefix> ::= <servername> | <nick> [ '!' <user> ] [ '@' <server> ]
134 * <command> ::= <letter> { <letter> } | <number> <number> <number>
135 * <SPACE> ::= ' ' { ' ' }
136 * <params> ::= <SPACE> [ ':' <trailing> | <middle> <params> ]
137 * <middle> ::= <Any *non-empty* sequence of octets not including SPACE
138 * or NUL or CR or LF, the first of which may not be ':'>
139 * <trailing> ::= <Any, possibly *empty*, sequence of octets not including NUL or CR or LF>
142 if(msg[0] == ':') { /* check prefix */
143 if (!(p = strchr(msg, ' ')))
146 for(++p; *p == ' '; p++);
148 argv[Tnick] = &msg[1];
149 if((p = strchr(msg, '!'))) {
156 for(p = cmd; p && *p != 0; p++)
157 if(*p == '\r' || *p == '\n')
159 if((p = strchr(cmd, ':'))) {
164 if(!strncmp("PRIVMSG", cmd, 7) || !strncmp("PING", cmd, 4)) {
165 if(tokenize(&argv[Tcmd], Tlast - Tcmd, cmd, ' ') != Tlast - Tcmd)
167 if(!strncmp("PRIVMSG", argv[Tcmd], 8)) {
168 snprintf(bufout, sizeof bufout, "<%s> %s",
169 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
170 pout(argv[Tchan], bufout);
172 else if(!strncmp("PING", argv[Tcmd], 5)) {
173 snprintf(bufout, sizeof bufout, "PONG %s\r\n", argv[Ttext]);
174 write(srv, bufout, strlen(bufout));
178 snprintf(bufout, sizeof bufout, "-!- %s", cmd);
179 pout(server, bufout);
183 main(int argc, char *argv[]) {
187 static struct sockaddr_in addr; /* initially filled with 0's */
191 nick = fullname = getenv("USER");
192 for(i = 1; i < argc; i++)
193 if(!strncmp(argv[i], "-s", 3)) {
194 if(++i < argc) server = argv[i];
196 else if(!strncmp(argv[i], "-p", 3)) {
197 if(++i < argc) port = (unsigned short)atoi(argv[i]);
199 else if(!strncmp(argv[i], "-n", 3)) {
200 if(++i < argc) nick = argv[i];
202 else if(!strncmp(argv[i], "-k", 3)) {
203 if(++i < argc) password = argv[i];
205 else if(!strncmp(argv[i], "-f", 3)) {
206 if(++i < argc) fullname = argv[i];
208 else if(!strncmp(argv[i], "-v", 3)) {
209 fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
213 fputs("usage: sic [-s server] [-p port] [-n nick]"
214 " [-k keyword] [-f fullname] [-v]\n", stderr);
219 if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
220 fprintf(stderr, "sic: cannot connect server '%s'\n", server);
223 if (NULL == (hp = gethostbyname(server))) {
224 fprintf(stderr, "sic: cannot resolve hostname '%s'\n", server);
227 addr.sin_family = AF_INET;
228 addr.sin_port = htons(port);
229 memcpy(&addr.sin_addr, hp->h_addr, hp->h_length);
230 if(connect(srv, (struct sockaddr *) &addr, sizeof(struct sockaddr_in))) {
232 fprintf(stderr, "sic: cannot connect server '%s'\n", server);
237 snprintf(bufout, sizeof bufout,
238 "PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
239 password, nick, nick, server, fullname);
241 snprintf(bufout, sizeof bufout, "NICK %s\r\nUSER %s localhost %s :%s\r\n",
242 nick, nick, server, fullname);
243 write(srv, bufout, strlen(bufout));
244 snprintf(ping, sizeof ping, "PING %s\r\n", server);
246 setbuf(stdout, NULL); /* unbuffered stdout */
248 for(;;) { /* main loop */
254 i = select(srv + 1, &rd, 0, 0, &tv);
258 perror("sic: error on select()");
261 if(time(NULL) - trespond >= PINGTIMEOUT) {
262 pout(server, "-!- sic shutting down: parse timeout");
265 write(srv, ping, strlen(ping));
268 if(FD_ISSET(srv, &rd)) {
269 if(getline(srv, sizeof bufin, bufin) == -1) {
270 perror("sic: remote server closed connection");
274 trespond = time(NULL);
276 if(FD_ISSET(0, &rd)) {
277 if(getline(0, sizeof bufin, bufin) == -1) {
278 perror("sic: broken pipe");