#include <errno.h>
#include <netdb.h>
#include <netinet/in.h>
+#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define PINGTIMEOUT 300
#define MAXMSG 4096
-enum { Tnick, Tuser, Tcmd, Tchan, Targ, Ttext, Tlast };
-
-static char *server = "irc.oftc.net";
+static char *host = "irc.oftc.net";
static unsigned short port = 6667;
-static char *nick = NULL;
-static char *fullname = NULL;
static char *password = NULL;
+static char nick[32];
static char bufin[MAXMSG], bufout[MAXMSG];
static char channel[256];
static int srv;
static time_t trespond;
+static void
+eprint(const char *errstr, ...) {
+ va_list ap;
+
+ va_start(ap, errstr);
+ vfprintf(stderr, errstr, ap);
+ va_end(ap);
+ exit(EXIT_FAILURE);
+}
+
static int
getline(int fd, unsigned int len, char *buf) {
unsigned int i = 0;
static char timestr[18];
time_t t = time(0);
- strftime(timestr, sizeof timestr, "%F %R", localtime(&t));
- fprintf(stdout, "%-8.8s: %s %s\n", channel, timestr, msg);
+ strftime(timestr, sizeof timestr, "%D %R", localtime(&t));
+ fprintf(stdout, "%-12.12s: %s %s\n", channel, timestr, msg);
}
static void
privmsg(char *channel, char *msg) {
+ if(channel[0] == 0)
+ return;
snprintf(bufout, sizeof bufout, "<%s> %s", nick, msg);
pout(channel, bufout);
snprintf(bufout, sizeof bufout, "PRIVMSG %s :%s\r\n", channel, msg);
return;
}
if(!strncmp(msg + 1, "j ", 2) && (msg[3] == '#'))
- snprintf(bufout, sizeof bufout, "JOIN %s\r\n", &msg[3]);
+ snprintf(bufout, sizeof bufout, "JOIN %s\r\n", msg + 3);
else if(!strncmp(msg + 1, "l ", 2))
- snprintf(bufout, sizeof bufout, "PART %s :sic - 300 LOC are too much!\r\n", &msg[3]);
+ snprintf(bufout, sizeof bufout, "PART %s :sic - 250 LOC are too much!\r\n", msg + 3);
else if(!strncmp(msg + 1, "m ", 2)) {
- if((p = strchr(&msg[3], ' ')))
+ if((p = strchr(msg + 3, ' ')))
*(p++) = 0;
- privmsg(&msg[3], p);
+ privmsg(msg + 3, p);
return;
}
else if(!strncmp(msg + 1, "s ", 2)) {
- strncpy(channel, &msg[3], sizeof channel);
+ strncpy(channel, msg + 3, sizeof channel);
return;
}
else if(!strncmp(msg + 1, "t ", 2)) {
- if((p = strchr(&msg[3], ' ')))
+ if((p = strchr(msg + 3, ' ')))
*(p++) = 0;
- snprintf(bufout, sizeof bufout, "TOPIC %s :%s\r\n", &msg[3], p);
+ snprintf(bufout, sizeof bufout, "TOPIC %s :%s\r\n", msg + 3, p);
}
else
- snprintf(bufout, sizeof bufout, "%s\r\n", &msg[1]);
+ snprintf(bufout, sizeof bufout, "%s\r\n", msg + 1);
write(srv, bufout, strlen(bufout));
}
-static unsigned int
-tokenize(char **result, unsigned int reslen, char *str, char delim) {
- char *p, *n;
- unsigned int i = 0;
-
- if(!str)
- return 0;
- for(n = str; *n == delim; n++);
- p = n;
- for(i = 0; *n != 0;) {
- if(i == reslen)
- return i;
- if(*n == delim) {
- *n = 0;
- if(strlen(p))
- result[i++] = p;
- p = ++n;
- } else
- n++;
- }
- if((i < reslen) && (p < n) && strlen(p))
- result[i++] = p;
- return i; /* number of tokens */
-}
-
static void
parsesrv(char *msg) {
- char *argv[Tlast], *cmd, *p;
- int i;
+ char *chan, *cmd, *p, *txt, *usr;
+ txt = NULL;
if(!msg || !(*msg))
return;
- for(i = 0; i < Tlast; i++)
- argv[i] = NULL;
- /* <bufout> ::= [':' <prefix> <SPACE> ] <command> <params> <crlf>
- * <prefix> ::= <servername> | <nick> [ '!' <user> ] [ '@' <server> ]
- * <command> ::= <letter> { <letter> } | <number> <number> <number>
- * <SPACE> ::= ' ' { ' ' }
- * <params> ::= <SPACE> [ ':' <trailing> | <middle> <params> ]
- * <middle> ::= <Any *non-empty* sequence of octets not including SPACE
- * or NUL or CR or LF, the first of which may not be ':'>
- * <trailing> ::= <Any, possibly *empty*, sequence of octets not including NUL or CR or LF>
- * <crlf> ::= CR LF
- */
- if(msg[0] == ':') { /* check prefix */
- if (!(p = strchr(msg, ' ')))
- return;
+ if(msg[0] != ':')
+ return; /* don't handle prefix-less server commands */
+ if(!(p = strchr(msg, ' ')))
+ return;
+ usr = msg + 1;
+ *p = 0;
+ cmd = ++p;
+ if((p = strchr(usr, '!')))
*p = 0;
- for(++p; *p == ' '; p++);
- cmd = p;
- argv[Tnick] = &msg[1];
- if((p = strchr(msg, '!'))) {
- *p = 0;
- argv[Tuser] = ++p;
- }
- } else
- cmd = msg;
- /* remove CRLFs */
- for(p = cmd; p && *p != 0; p++)
+ for(p = cmd; *p; p++) /* remove CRLFs */
if(*p == '\r' || *p == '\n')
*p = 0;
if((p = strchr(cmd, ':'))) {
*p = 0;
- argv[Ttext] = ++p;
+ txt = ++p;
}
- tokenize(&argv[Tcmd], Tlast - Tcmd, cmd, ' ');
- if(!argv[Tcmd] || !strncmp("PONG", argv[Tcmd], 5))
- return;
- else if(!strncmp("PING", argv[Tcmd], 5)) {
- snprintf(bufout, sizeof bufout, "PONG %s\r\n", argv[Ttext]);
- write(srv, bufout, strlen(bufout));
- return;
- }
- else if(!argv[Tnick] || !argv[Tuser]) { /* server command */
- snprintf(bufout, sizeof bufout, "%s", argv[Ttext] ? argv[Ttext] : "");
- pout(server, bufout);
+ if(!strncmp("PONG", cmd, 4))
return;
+ if(!strncmp("PRIVMSG", cmd, 7) && txt) {
+ if(!(p = strchr(cmd, ' ')))
+ return;
+ *p = 0;
+ chan = ++p;
+ for(; *p && *p != ' '; p++);
+ *p = 0;
+ snprintf(bufout, sizeof bufout, "<%s> %s", usr, txt);
+ pout(chan, bufout);
}
- else if(!strncmp("ERROR", argv[Tcmd], 6))
- snprintf(bufout, sizeof bufout, "-!- error %s",
- argv[Ttext] ? argv[Ttext] : "unknown");
- else if(!strncmp("JOIN", argv[Tcmd], 5)) {
- if(argv[Ttext]!=NULL){
- p = strchr(argv[Ttext], ' ');
- if(p)
- *p = 0;
- }
- argv[Tchan] = argv[Ttext];
- snprintf(bufout, sizeof bufout, "-!- %s(%s) has joined %s",
- argv[Tnick], argv[Tuser], argv[Ttext]);
+ else if(!strncmp("PING", cmd, 4) && txt) {
+ snprintf(bufout, sizeof bufout, "PONG %s\r\n", txt);
+ write(srv, bufout, strlen(bufout));
}
- else if(!strncmp("PART", argv[Tcmd], 5)) {
- snprintf(bufout, sizeof bufout, "-!- %s(%s) has left %s",
- argv[Tnick], argv[Tuser], argv[Tchan]);
+ else {
+ snprintf(bufout, sizeof bufout, ">< %s: %s", cmd, txt ? txt : "");
+ pout(usr, bufout);
+ if(!strncmp("NICK", cmd, 4) && !strncmp(usr, nick, sizeof nick) && txt)
+ strncpy(nick, txt, sizeof nick);
}
- else if(!strncmp("MODE", argv[Tcmd], 5))
- snprintf(bufout, sizeof bufout, "-!- %s changed mode/%s -> %s %s",
- argv[Tnick], argv[Tcmd + 1] ? argv[Tcmd + 1] : "",
- argv[Tcmd + 2] ? argv[Tcmd + 2] : "",
- argv[Tcmd + 3] ? argv[Tcmd + 3] : "");
- else if(!strncmp("QUIT", argv[Tcmd], 5))
- snprintf(bufout, sizeof bufout, "-!- %s(%s) has quit \"%s\"",
- argv[Tnick], argv[Tuser],
- argv[Ttext] ? argv[Ttext] : "");
- else if(!strncmp("NICK", argv[Tcmd], 5))
- snprintf(bufout, sizeof bufout, "-!- %s changed nick to %s",
- argv[Tnick], argv[Ttext]);
- else if(!strncmp("TOPIC", argv[Tcmd], 6))
- snprintf(bufout, sizeof bufout, "-!- %s changed topic to \"%s\"",
- argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
- else if(!strncmp("KICK", argv[Tcmd], 5))
- snprintf(bufout, sizeof bufout, "-!- %s kicked %s (\"%s\")",
- argv[Tnick], argv[Targ],
- argv[Ttext] ? argv[Ttext] : "");
- else if(!strncmp("NOTICE", argv[Tcmd], 7))
- snprintf(bufout, sizeof bufout, "-!- \"%s\")",
- argv[Ttext] ? argv[Ttext] : "");
- else if(!strncmp("PRIVMSG", argv[Tcmd], 8))
- snprintf(bufout, sizeof bufout, "<%s> %s",
- argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
- if(!argv[Tchan] || !strncmp(argv[Tchan], nick, strlen(nick)))
- pout(argv[Tnick], bufout);
- else
- pout(argv[Tchan], bufout);
}
int
char ping[256];
fd_set rd;
- nick = fullname = getenv("USER");
+ strncpy(nick, getenv("USER"), sizeof nick);
for(i = 1; i < argc; i++)
- if(!strncmp(argv[i], "-s", 3)) {
- if(++i < argc) server = argv[i];
+ if(!strncmp(argv[i], "-h", 3)) {
+ if(++i < argc) host = argv[i];
}
else if(!strncmp(argv[i], "-p", 3)) {
if(++i < argc) port = (unsigned short)atoi(argv[i]);
}
else if(!strncmp(argv[i], "-n", 3)) {
- if(++i < argc) nick = argv[i];
+ if(++i < argc) strncpy(nick, argv[i], sizeof nick);
}
else if(!strncmp(argv[i], "-k", 3)) {
if(++i < argc) password = argv[i];
}
- else if(!strncmp(argv[i], "-f", 3)) {
- if(++i < argc) fullname = argv[i];
- }
- else if(!strncmp(argv[i], "-v", 3)) {
- fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
- exit(EXIT_SUCCESS);
- }
- else {
- fputs("usage: sic [-s server] [-p port] [-n nick]"
- " [-k keyword] [-f fullname] [-v]\n", stderr);
- exit(EXIT_FAILURE);
- }
+ else if(!strncmp(argv[i], "-v", 3))
+ eprint("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n");
+ else
+ eprint("usage: sic [-h host] [-p port] [-n nick] [-k keyword] [-v]\n");
/* init */
- if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
- fprintf(stderr, "sic: cannot connect server '%s'\n", server);
- exit(EXIT_FAILURE);
- }
- if (NULL == (hp = gethostbyname(server))) {
- fprintf(stderr, "sic: cannot resolve hostname '%s'\n", server);
- exit(EXIT_FAILURE);
- }
+ if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+ eprint("sic: cannot connect host '%s'\n", host);
+ if(NULL == (hp = gethostbyname(host)))
+ eprint("sic: cannot resolve hostname '%s'\n", host);
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
memcpy(&addr.sin_addr, hp->h_addr, hp->h_length);
if(connect(srv, (struct sockaddr *) &addr, sizeof(struct sockaddr_in))) {
close(srv);
- fprintf(stderr, "sic: cannot connect server '%s'\n", server);
- exit(EXIT_FAILURE);
+ eprint("sic: cannot connect host '%s'\n", host);
}
/* login */
if(password)
snprintf(bufout, sizeof bufout,
"PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
- password, nick, nick, server, fullname);
+ password, nick, nick, host, nick);
else
snprintf(bufout, sizeof bufout, "NICK %s\r\nUSER %s localhost %s :%s\r\n",
- nick, nick, server, fullname);
+ nick, nick, host, nick);
write(srv, bufout, strlen(bufout));
- snprintf(ping, sizeof ping, "PING %s\r\n", server);
+ snprintf(ping, sizeof ping, "PING %s\r\n", host);
channel[0] = 0;
setbuf(stdout, NULL); /* unbuffered stdout */
if(i < 0) {
if(errno == EINTR)
continue;
- perror("sic: error on select()");
- exit(EXIT_FAILURE);
- } else if(i == 0) {
- if(time(NULL) - trespond >= PINGTIMEOUT) {
- pout(server, "-!- sic shutting down: parse timeout");
- exit(EXIT_FAILURE);
- }
+ eprint("sic: error on select()");
+ }
+ else if(i == 0) {
+ if(time(NULL) - trespond >= PINGTIMEOUT)
+ eprint("sic shutting down: parse timeout");
write(srv, ping, strlen(ping));
continue;
}
if(FD_ISSET(srv, &rd)) {
- if(getline(srv, sizeof bufin, bufin) == -1) {
- perror("sic: remote server closed connection");
- exit(EXIT_FAILURE);
- }
+ if(getline(srv, sizeof bufin, bufin) == -1)
+ eprint("sic: remote host closed connection");
parsesrv(bufin);
trespond = time(NULL);
}
if(FD_ISSET(0, &rd)) {
- if(getline(0, sizeof bufin, bufin) == -1) {
- perror("sic: broken pipe");
- exit(EXIT_FAILURE);
- }
+ if(getline(0, sizeof bufin, bufin) == -1)
+ eprint("sic: broken pipe");
parsein(bufin);
}
}
projects / sic.git / blobdiff