[hackers] [sic] added kris' sic.c and util.c temporarily, will need some time to see what will and won't be integrated into mainstream sic.c || Anselm R Garbe

changeset: 100:fe7d70b90d11
tag: tip
user: Anselm R Garbe <garbeam_AT_gmail.com>
date: Wed Sep 23 14:32:20 2009 +0100
files: kris/sic.c kris/util.c
description:
added kris' sic.c and util.c temporarily, will need some time to see what will and won't be integrated into mainstream sic.c

diff -r f112861ce888 -r fe7d70b90d11 kris/sic.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/kris/sic.c Wed Sep 23 14:32:20 2009 +0100
@@ -0,0 +1,223 @@
+/* ? 2005-2007 Anselm R. Garbe <garbeam at gmail dot com>
+ * ? 2007 Kris Maglione <fbsdaemon_AT_gmail.com>
+ * ? 2005 Nico Golde <nico at ngolde dot de>
+ * See LICENSE file for license details.
+ */
+#include <ctype.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#define nil ((void*)0)
+typedef unsigned short ushort;
+
+#define PINGTIMEOUT 300
+
+static char* host = "irc.oftc.net";
+static ushort port = 6667;
+static char* password;
+static char nick[32];
+
+static char bufin[4096];
+static char bufout[4096];
+static char channel[256];
+static time_t trespond;
+static FILE *srv;
+
+#define va_buf(buf, fmt) {\
+ va_list ap; \
+ \
+ va_start(ap, fmt); \
+ vsnprintf(buf, sizeof buf, fmt, ap); \
+ va_end(ap); \
+}
+
+#include "util.c"
+
+static void
+pout(char *channel, char *fmt, ...) {
+ static char timestr[18];
+ time_t t;
+
+ va_buf(bufout, fmt);
+
+ t = time(nil);
+ strftime(timestr, sizeof timestr, "%D %R", localtime(&t));
+ fprintf(stdout, "%-12s: %s %s\n", channel, timestr, bufout);
+}
+
+static void
+sout(char *fmt, ...) {
+ va_buf(bufout, fmt);
+ fprintf(srv, "%s\r\n", bufout);
+}
+
+static void
+privmsg(char *channel, char *msg) {
+ if(channel[0] == '\0') {
+ pout("", "No channel to send to");
+ return;
+ }
+ pout(channel, "<%s> %s", nick, msg);
+ sout("PRIVMSG %s :%s", channel, msg);
+}
+
+static void
+parsein(char *msg) {
+ char *p;
+ char c;
+
+ if(msg[0] == '\0')
+ return;
+ msg = ctok(&msg, '\n');
+ if(msg[0] != ':') {
+ privmsg(channel, msg);
+ return;
+ }
+ c = *++msg;
+ if(!c || !isspace(msg[1]))
+ sout("%s", msg);
+ else {
+ if(msg[1])
+ msg += 2;
+ switch(c) {
+ case 'j':
+ sout("JOIN %s", msg);
+ if(channel[0] == '\0')
+ strlcpy(channel, msg, sizeof channel);
+ break;
+ case 'l':
+ p = tok(&msg);
+ if(!*p)
+ p = channel;
+ if(!*msg)
+ msg = "sic - 250 LOC are too much!";
+ sout("PART %s :%s", p, msg);
+ break;
+ case 'm':
+ p = tok(&msg);
+ privmsg(p, msg);
+ break;
+ case 's':
+ strlcpy(channel, msg, sizeof channel);
+ break;
+ default:
+ sout("%c %s", c, msg);
+ break;
+ }
+ }
+}
+
+static void
+parsesrv(char *msg) {
+ char *cmd, *p, *usr, *txt;
+
+ usr = host;
+ if(!msg || !*msg)
+ return;
+ if(msg[0] == ':') {
+ msg++;
+ p = tok(&msg);
+ if(!*msg)
+ return;
+ usr = ctok(&p, '!');
+ }
+ txt = ctok(&msg, '\r');
+ msg = ctok(&txt, ':');
+ cmd = tok(&msg);
+ if(!strcmp("PONG", cmd))
+ return;
+ if(!strcmp("PRIVMSG", cmd))
+ pout(msg, "<%s> %s", usr, txt);
+ else if(!strcmp("PING", cmd))
+ sout("PONG %s", txt);
+ else {
+ pout(usr, ">< %s: %s", cmd, txt);
+ if(!strcmp("NICK", cmd) && !strcmp(usr, nick))
+ strlcpy(nick, txt, sizeof nick);
+ }
+}
+
+int
+main(int argc, char *argv[]) {
+ int i, c;
+ struct timeval tv;
+ fd_set rd;
+
+ strlcpy(nick, getenv("USER"), sizeof nick);
+ for(i = 1; i < argc; i++) {
+ c = argv[i][1];
+ if(argv[i][0] != '-' || argv[i][2])
+ c = -1;
+ switch(c) {
+ case 'h':
+ if(++i < argc) host = argv[i];
+ break;
+ case 'p':
+ if(++i < argc) port = atoi(argv[i]);
+ break;
+ case 'n':
+ if(++i < argc) strlcpy(nick, argv[i], sizeof nick);
+ break;
+ case 'k':
+ if(++i < argc) password = argv[i];
+ break;
+ case 'v':
+ eprint("sic-"VERSION", ? 2005-2007 Anselm R. Garbe, Nico Golde\n");
+ default:
+ eprint("usage: sic [-h host] [-p port] [-n nick] [-k keyword] [-v]\n");
+ }
+ }
+
+ /* init */
+ i = dial(host, port);
+ srv = fdopen(i, "r+");
+
+ /* login */
+ if(password)
+ sout("PASS %s", password);
+ sout("NICK %s", nick);
+ sout("USER %s localhost %s :%s", nick, host, nick);
+ fflush(srv);
+
+ setbuf(stdout, nil);
+ setbuf(srv, nil);
+
+ for(;;) { /* main loop */
+ FD_ZERO(&rd);
+ FD_SET(0, &rd);
+ FD_SET(fileno(srv), &rd);
+ tv.tv_sec = 120;
+ tv.tv_usec = 0;
+ i = select(fileno(srv) + 1, &rd, 0, 0, &tv);
+ if(i < 0) {
+ if(errno == EINTR)
+ continue;
+ eprint("sic: error on select():");
+ }
+ else if(i == 0) {
+ if(time(nil) - trespond >= PINGTIMEOUT)
+ eprint("sic shutting down: parse timeout\n");
+ sout("PING %s", host);
+ continue;
+ }
+ if(FD_ISSET(fileno(srv), &rd)) {
+ if(fgets(bufin, sizeof bufin, srv) == nil)
+ eprint("sic: remote host closed connection\n");
+ parsesrv(bufin);
+ trespond = time(nil);
+ }
+ if(FD_ISSET(0, &rd)) {
+ if(fgets(bufin, sizeof bufin, stdin) == nil)
+ eprint("sic: broken pipe\n");
+ parsein(bufin);
+ }
+ }
+ return 0;
+}
+
+
diff -r f112861ce888 -r fe7d70b90d11 kris/util.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/kris/util.c Wed Sep 23 14:32:20 2009 +0100
@@ -0,0 +1,73 @@
+#include <netdb.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+static void
+eprint(const char *fmt, ...) {
+
+ va_buf(bufout, fmt);
+ fprintf(stderr, "%s", bufout);
+
+ if(fmt[0] && fmt[strlen(fmt)-1] == ':')
+ fprintf(stderr, " %s\n", strerror(errno));
+ exit(1);
+}
+
+static int
+dial(char *host, int port) {
+ struct hostent *hp;
+ static struct sockaddr_in addr;
+ int i;
+
+ if((i = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+ eprint("sic: cannot connect host '%s':", host);
+ if(nil == (hp = gethostbyname(host)))
+ eprint("sic: cannot resolve hostname '%s': %s\n", host, hstrerror(h_errno));
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(port);
+ memcpy(&addr.sin_addr, hp->h_addr, hp->h_length);
+ if(connect(i, (struct sockaddr*)&addr, sizeof(struct sockaddr_in)))
+ eprint("sic: cannot connect host '%s':", host);
+ return i;
+}
+
+#define strlcpy _strlcpy
+static void
+strlcpy(char *to, const char *from, int l) {
+ strncpy(to, from, l-1);
+ to[l-1] = '\0';
+}
+
+static void
+eat(char **s, int (*p)(int), int r) {
+ char *q;
+
+ for(q=*s; *q && p(*q) == r; q++)
+ ;
+ *s = q;
+}
+
+static char*
+tok(char **s) {
+ char *p;
+
+ eat(s, isspace, 1);
+ p = *s;
+ eat(s, isspace, 0);
+ if(**s) *(*s)++ = '\0';
+ return p;
+}
+
+static char*
+ctok(char **s, int c) {
+ char *p, *q;
+
+ q = *s;
+ for(p=q; *p && *p != c; p++)
+ ;
+ if(*p) *p++ = '\0';
+ *s = p;
+ return q;
+}
+
+
Received on Wed Sep 23 2009 - 13:32:27 UTC