-/*
- * (C)opyright MMV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
- * (C)opyright MMV-MMVI Nico Golde <nico at ngolde dot de>
- * See LICENSE file for license details.
- */
-
+/* © 2005-2008 Anselm R Garbe <garbeam at gmail dot com>
+ * © 2005 Nico Golde <nico at ngolde dot de>
+ * See LICENSE file for license details. */
#include <errno.h>
#include <netdb.h>
#include <netinet/in.h>
+#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
+#include <unistd.h>
#include <sys/socket.h>
#include <sys/time.h>
#define PINGTIMEOUT 300
-#define MAXMSG 4096
+#define MAXMSG 4096
-enum { Tnick, Tuser, Tcmd, Tchan, Targ, Ttext, Tlast };
+static void die(const char *errstr, ...);
+static void printl(char *channel, char *msg);
+static void privmsg(char *channel, char *msg);
+static void parsein(char *msg);
+static void parsesrv(char *msg);
+static int readl(int fd, unsigned int len, char *buf);
-static char *server = "irc.oftc.net";
-static int port = 6667;
-static char *nick = NULL;
-static char *fullname = NULL;
+static char *host = "irc.oftc.net";
+static unsigned short port = 6667;
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 int
-getline(int fd, unsigned int len, char *buf)
-{
- unsigned int i = 0;
- char c;
- do {
- if(read(fd, &c, sizeof(char)) != sizeof(char))
- return -1;
- buf[i++] = c;
- }
- while(c != '\n' && i < len);
- buf[i - 1] = 0;
- return 0;
+void
+die(const char *errstr, ...) {
+ va_list ap;
+
+ va_start(ap, errstr);
+ vfprintf(stderr, errstr, ap);
+ va_end(ap);
+ exit(EXIT_FAILURE);
}
-static void
-pout(char *channel, char *msg)
-{
+void
+printl(char *channel, char *msg) {
static char timestr[18];
time_t t = time(0);
- strftime(timestr, sizeof(timestr), "%a %R", localtime(&t));
+ 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)
-{
- snprintf(bufout, sizeof(bufout), "<%12s> %s", nick, msg);
- pout(channel, bufout);
- snprintf(bufout, sizeof(bufout), "PRIVMSG %s :%s\r\n", channel, msg);
+void
+privmsg(char *channel, char *msg) {
+ if(channel[0] == 0)
+ return;
+ snprintf(bufout, sizeof bufout, "<%s> %s", nick, msg);
+ printl(channel, bufout);
+ snprintf(bufout, sizeof bufout, "PRIVMSG %s :%s\r\n", channel, msg);
write(srv, bufout, strlen(bufout));
}
-static void
-parsein(char *msg)
-{
+void
+parsein(char *msg) {
char *p;
- if(msg[0] != '/') {
+ if(msg[0] == 0)
+ return;
+ if(msg[0] != ':') {
privmsg(channel, msg);
return;
}
- if((p = strchr(&msg[3], ' ')))
- *(p++) = 0;
- switch (msg[1]) {
- default:
- snprintf(bufout, sizeof(bufout), "%s\r\n", &msg[1]);
- break;
- case 'j':
- if(msg[3] == '#')
- snprintf(bufout, sizeof(bufout), "JOIN %s\r\n", &msg[3]);
- else if(p) {
- privmsg(&msg[3], p + 1);
- return;
- }
- break;
- case 'l':
- if(p)
- snprintf(bufout, sizeof(bufout), "PART %s :%s\r\n", &msg[3], p);
- else
- snprintf(bufout, sizeof(bufout), "PART %s :sic\r\n", &msg[3]);
- break;
- case 'm':
- privmsg(&msg[3], p);
+ if(!strncmp(msg + 1, "j ", 2) && (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 - 250 LOC are too much!\r\n", msg + 3);
+ else if(!strncmp(msg + 1, "m ", 2)) {
+ if((p = strchr(msg + 3, ' ')))
+ *(p++) = 0;
+ privmsg(msg + 3, p);
return;
- case 's':
- strncpy(channel, &msg[3], sizeof(channel));
+ }
+ else if(!strncmp(msg + 1, "s ", 2)) {
+ strncpy(channel, msg + 3, sizeof channel);
return;
- case 't':
- snprintf(bufout, sizeof(bufout), "TOPIC %s :%s\r\n", &msg[3], p);
- break;
}
+ else
+ 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 */
-}
+void
+parsesrv(char *msg) {
+ char *chan, *cmd, *p, *txt, *usr;
-static void
-parsesrv(char *msg)
-{
- char *argv[Tlast], *cmd, *p;
- int i;
+ txt = NULL;
+ usr = host;
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 */
- p = strchr(msg, ' ');
+ if(msg[0] != ':')
+ cmd = msg;
+ else {
+ if(!(p = strchr(msg, ' ')))
+ return;
*p = 0;
- for(++p; *p == ' '; p++);
- cmd = p;
- argv[Tnick] = &msg[1];
- if((p = strchr(msg, '!'))) {
+ usr = msg + 1;
+ cmd = ++p;
+ if((p = strchr(usr, '!')))
*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(!strncmp("PONG", argv[Tcmd], 5)) {
+ if(!strncmp("PONG", cmd, 4))
return;
- } else if(!strncmp("PING", argv[Tcmd], 5)) {
- snprintf(bufout, sizeof(bufout), "PONG %s\r\n", argv[Ttext]);
+ 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);
+ printl(chan, bufout);
+ }
+ else if(!strncmp("PING", cmd, 4) && txt) {
+ snprintf(bufout, sizeof bufout, "PONG %s\r\n", txt);
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);
- return;
- } 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("PART", argv[Tcmd], 5)) {
- snprintf(bufout, sizeof(bufout), "-!- %s(%s) has left %s",
- argv[Tnick], argv[Tuser], argv[Tchan]);
- } else if(!strncmp("MODE", argv[Tcmd], 5))
- snprintf(bufout, sizeof(bufout), "-!- %s changed mode/%s -> %s %s",
- argv[Tnick], argv[Tcmd + 1],
- argv[Tcmd + 2], 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), "<%12s> %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);
+ }
+ else {
+ snprintf(bufout, sizeof bufout, ">< %s: %s", cmd, txt ? txt : "");
+ printl(usr, bufout);
+ if(!strncmp("NICK", cmd, 4) && !strncmp(usr, nick, sizeof nick) && txt)
+ strncpy(nick, txt, sizeof nick);
+ }
}
int
-main(int argc, char *argv[])
-{
+readl(int fd, unsigned int len, char *buf) {
+ unsigned int i = 0;
+ char c;
+
+ do {
+ if(read(fd, &c, sizeof(char)) != sizeof(char))
+ return -1;
+ buf[i++] = c;
+ }
+ while(c != '\n' && i < len);
+ buf[i - 1] = 0;
+ return 0;
+}
+
+
+int
+main(int argc, char *argv[]) {
int i;
struct timeval tv;
struct hostent *hp;
- struct sockaddr_in addr = { 0 };
+ static struct sockaddr_in addr; /* initially filled with 0's */
char ping[256];
fd_set rd;
- pout(server, "test 123");
- pout(server, "test whdhwdwjdw djwhdwkjdwhk dwhdwkdw 123");
- pout("kjfwefiuewu", "test 123");
- pout(server, "test dwdw 123");
- nick = fullname = getenv("USER");
- for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
- switch (argv[i][1]) {
- default:
- fputs("usage: sic [-s server] [-p port] [-n nick]"
- " [-k keyword] [-f fullname] [-v]\n", stderr);
- exit(EXIT_FAILURE);
- break;
- case 's':
- server = argv[++i];
- break;
- case 'p':
- port = atoi(argv[++i]);
- break;
- case 'n':
- nick = argv[++i];
- break;
- case 'k':
- password = argv[++i];
- break;
- case 'f':
- fullname = argv[++i];
- break;
- case 'v':
- fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
- exit(EXIT_SUCCESS);
- break;
+ strncpy(nick, getenv("USER"), sizeof nick);
+ for(i = 1; i < argc; 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) strncpy(nick, argv[i], sizeof nick);
+ }
+ else if(!strncmp(argv[i], "-k", 3)) {
+ if(++i < argc) password = argv[i];
+ }
+ else if(!strncmp(argv[i], "-v", 3))
+ die("sic-"VERSION", © 2005-2008 Anselm R Garbe, Nico Golde\n");
+ else
+ die("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);
- }
- hp = gethostbyname(server);
+ if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+ die("error: cannot connect host '%s'\n", host);
+ if(NULL == (hp = gethostbyname(host)))
+ die("error: cannot resolve hostname '%s'\n", host);
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
- bcopy(hp->h_addr, &addr.sin_addr, hp->h_length);
+ 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);
+ die("error: 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 ? fullname : nick);
+ snprintf(bufout, sizeof bufout,
+ "PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
+ password, nick, nick, host, nick);
else
- snprintf(bufout, sizeof(bufout), "NICK %s\r\nUSER %s localhost %s :%s\r\n",
- nick, nick, server, fullname ? fullname : nick);
+ snprintf(bufout, sizeof bufout, "NICK %s\r\nUSER %s localhost %s :%s\r\n",
+ 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 */
- for(;;) {
+
+ for(;;) { /* main loop */
FD_ZERO(&rd);
FD_SET(0, &rd);
FD_SET(srv, &rd);
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: parseing timeout");
- exit(EXIT_FAILURE);
- }
+ die("error: error on select()");
+ }
+ else if(i == 0) {
+ if(time(NULL) - trespond >= PINGTIMEOUT)
+ die("error: 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(readl(srv, sizeof bufin, bufin) == -1)
+ die("error: 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(readl(0, sizeof bufin, bufin) == -1)
+ die("error: broken pipe");
parsein(bufin);
}
}
-
return 0;
}
projects / sic.git / blobdiff