-/*
- * (C)opyright MMV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
+/* (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.
*/
-
#include <errno.h>
#include <netdb.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
+#include <unistd.h>
#include <sys/socket.h>
#include <sys/time.h>
enum { Tnick, Tuser, Tcmd, Tchan, Targ, Ttext, Tlast };
static char *server = "irc.oftc.net";
-static int port = 6667;
+static unsigned short port = 6667;
static char *nick = NULL;
static char *fullname = NULL;
static char *password = NULL;
static time_t trespond;
static int
-getline(int fd, unsigned int len, char *buf)
-{
+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;
}
static void
-pout(char *channel, char *msg)
-{
+pout(char *channel, char *msg) {
static char timestr[18];
time_t t = time(0);
}
static void
-privmsg(char *channel, char *msg)
-{
+privmsg(char *channel, char *msg) {
snprintf(bufout, sizeof(bufout), "<%s> %s", nick, msg);
pout(channel, bufout);
snprintf(bufout, sizeof(bufout), "PRIVMSG %s :%s\r\n", channel, msg);
}
static void
-parsein(char *msg)
-{
+parsein(char *msg) {
char *p;
if(msg[0] == 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':
+ 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\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':
+ }
+ else if(!strncmp(msg + 1, "s ", 2)) {
strncpy(channel, &msg[3], sizeof(channel));
return;
- case 't':
+ }
+ else if(!strncmp(msg + 1, "t ", 2)) {
+ if((p = strchr(&msg[3], ' '))
+ *(p++) = 0;
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)
-{
+tokenize(char **result, unsigned int reslen, char *str, char delim) {
char *p, *n;
unsigned int i = 0;
}
static void
-parsesrv(char *msg)
-{
+parsesrv(char *msg) {
char *argv[Tlast], *cmd, *p;
int i;
+
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
+ /* <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, ' ');
}
} else
cmd = msg;
-
/* remove CRLFs */
for(p = cmd; p && *p != 0; p++)
if(*p == '\r' || *p == '\n')
*p = 0;
-
if((p = strchr(cmd, ':'))) {
*p = 0;
argv[Ttext] = ++p;
}
tokenize(&argv[Tcmd], Tlast - Tcmd, cmd, ' ');
-
- if(!strncmp("PONG", argv[Tcmd], 5)) {
+ if(!strncmp("PONG", argv[Tcmd], 5))
return;
- } else if(!strncmp("PING", argv[Tcmd], 5)) {
+ 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 */
+ }
+ 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))
+ }
+ 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)) {
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)) {
+ }
+ 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))
+ }
+ 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]);
}
int
-main(int argc, char *argv[])
-{
+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;
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':
+ for(i = 1; i < argc; i++)
+ if(!strncmp(argv[i], "-s", 3))
server = argv[++i];
- break;
- case 'p':
- port = atoi(argv[++i]);
- break;
- case 'n':
+ else if(!strncmp(argv[i], "-p", 3))
+ port = (unsigned short)atoi(argv[++i]);
+ else if(!strncmp(argv[i], "-n", 3))
nick = argv[++i];
- break;
- case 'k':
+ else if(!strncmp(argv[i], "-k", 3))
password = argv[++i];
- break;
- case 'f':
+ else if(!strncmp(argv[i], "-f", 3))
fullname = argv[++i];
- break;
- case 'v':
+ else if(!strncmp(argv[i], "-v", 3)) {
fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
exit(EXIT_SUCCESS);
- break;
}
- }
+ else {
+ fputs("usage: sic [-s server] [-p port] [-n nick]"
+ " [-k keyword] [-f fullname] [-v]\n", stderr);
+ exit(EXIT_FAILURE);
+ }
/* 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 (NULL == (hp = gethostbyname(server))) {
+ fprintf(stderr, "sic: cannot resolve hostname '%s'\n", server);
+ exit(EXIT_FAILURE);
+ }
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);
}
-
/* login */
if(password)
snprintf(bufout, sizeof(bufout),
snprintf(bufout, sizeof(bufout), "NICK %s\r\nUSER %s localhost %s :%s\r\n",
nick, nick, server, fullname);
write(srv, bufout, strlen(bufout));
-
snprintf(ping, sizeof(ping), "PING %s\r\n", server);
channel[0] = 0;
setbuf(stdout, NULL); /* unbuffered stdout */
- for(;;) {
+
+ for(;;) { /* main loop */
FD_ZERO(&rd);
FD_SET(0, &rd);
FD_SET(srv, &rd);
parsein(bufin);
}
}
-
return 0;
}
projects / sic.git / blobdiff