/[cvs]/eggdrop1.9/src/main.c
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Contents of /eggdrop1.9/src/main.c

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Revision 1.142 - (show annotations) (download) (as text)
Mon Mar 24 02:11:39 2003 UTC (16 years, 5 months ago) by stdarg
Branch: MAIN
Changes since 1.141: +21 -3 lines
File MIME type: text/x-chdr
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1 /*
2 * main.c --
3 *
4 * core event handling
5 * signal handling
6 * command line arguments
7 */
8 /*
9 * Copyright (C) 1997 Robey Pointer
10 * Copyright (C) 1999, 2000, 2001, 2002, 2003 Eggheads Development Team
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 */
26 /*
27 * The author (Robey Pointer) can be reached at: robey@netcom.com
28 * NOTE: Robey is no longer working on this code, there is a discussion
29 * list available at eggheads@eggheads.org.
30 */
31
32 #ifndef lint
33 static const char rcsid[] = "$Id: main.c,v 1.141 2003/03/04 22:02:27 wcc Exp $";
34 #endif
35
36 #include <eggdrop/eggdrop.h>
37 #include "main.h"
38 #include "core_config.h"
39 #include <fcntl.h>
40 #ifdef TIME_WITH_SYS_TIME
41 # include <sys/time.h>
42 # include <time.h>
43 #else
44 # ifdef HAVE_SYS_TIME_H
45 # include <sys/time.h>
46 # else
47 # include <time.h>
48 # endif
49 #endif
50 #include <sys/stat.h>
51 #include <errno.h>
52 #include <signal.h>
53 #include <netdb.h>
54 #include <setjmp.h>
55 #include <locale.h>
56 #include <ctype.h>
57
58 #ifdef STOP_UAC /* osf/1 complains a lot */
59 #include <sys/sysinfo.h>
60 #define UAC_NOPRINT 0x00000001 /* Don't report unaligned fixups */
61 #endif
62 /* Some systems have a working sys/wait.h even though configure will
63 * decide it's not bsd compatable. Oh well.
64 */
65
66 #include "chan.h"
67 #include "modules.h"
68 #include "bg.h"
69 #include "core_binds.h"
70 #include "logfile.h"
71 #include "misc.h"
72 #include "traffic.h"
73
74 #ifdef CYGWIN_HACKS
75 #include <windows.h>
76 #endif
77
78 #ifndef _POSIX_SOURCE
79 /* Solaris needs this */
80 #define _POSIX_SOURCE 1
81 #endif
82
83 extern int conmask;
84 extern struct dcc_t *dcc;
85 extern struct userrec *userlist;
86
87 #ifndef MAKING_MODS
88 extern struct dcc_table DCC_CHAT;
89 #endif /* MAKING_MODS */
90
91 /*
92 * Please use the PATCH macro instead of directly altering the version
93 * string from now on (it makes it much easier to maintain patches).
94 * Also please read the README file regarding your rights to distribute
95 * modified versions of this bot.
96 */
97
98 char egg_version[1024] = VERSION;
99 int egg_numver = VERSION_NUM;
100
101 eggdrop_t *egg = NULL; /* Eggdrop's context */
102
103 char notify_new[121] = ""; /* Person to send a note to for new users */
104 int default_flags = 0; /* Default user flags and */
105 int default_uflags = 0; /* Default userdefinied flags for people
106 who say 'hello' or for .adduser */
107
108 int backgrd = 1; /* Run in the background? */
109 int con_chan = 0; /* Foreground: constantly display channel
110 stats? */
111 int term_z = 0; /* Foreground: use the terminal as a party
112 line? */
113 char configfile[121] = "config.xml"; /* Name of the config file */
114 char helpdir[121] = "help/"; /* Directory of help files (if used) */
115 char textdir[121] = "text/"; /* Directory for text files that get dumped */
116 time_t online_since; /* Unix-time that the bot loaded up */
117 int make_userfile = 0; /* Using bot in make-userfile mode? (first
118 user to 'hello' becomes master) */
119 char owner[121] = ""; /* Permanent owner(s) of the bot */
120 char pid_file[120]; /* Name of the file for the pid to be
121 stored in */
122 int save_users_at = 0; /* How many minutes past the hour to
123 save the userfile? */
124 int notify_users_at = 0; /* How many minutes past the hour to
125 notify users of notes? */
126 char version[81]; /* Version info (long form) */
127 char ver[41]; /* Version info (short form) */
128 char egg_xtra[2048]; /* Patch info */
129 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
130 int do_restart = 0; /* .restart has been called, restart asap */
131 int die_on_sighup = 0; /* die if bot receives SIGHUP */
132 int die_on_sigterm = 1; /* die if bot receives SIGTERM */
133 int resolve_timeout = 15; /* hostname/address lookup timeout */
134 char quit_msg[1024]; /* quit message */
135 time_t now; /* duh, now :) */
136 egg_timeval_t egg_timeval_now; /* Same thing, but seconds and microseconds. */
137
138 void fatal(const char *s, int recoverable)
139 {
140 putlog(LOG_MISC, "*", "* %s", s);
141 flushlogs();
142 unlink(pid_file);
143 if (!recoverable) {
144 bg_send_quit(BG_ABORT);
145 exit(1);
146 }
147 }
148
149 static void got_bus(int z)
150 {
151 fatal("BUS ERROR -- CRASHING!", 1);
152 #ifdef SA_RESETHAND
153 kill(getpid(), SIGBUS);
154 #else
155 bg_send_quit(BG_ABORT);
156 exit(1);
157 #endif
158 }
159
160 static void got_segv(int z)
161 {
162 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
163 #ifdef SA_RESETHAND
164 kill(getpid(), SIGSEGV);
165 #else
166 bg_send_quit(BG_ABORT);
167 exit(1);
168 #endif
169 }
170
171 static void got_fpe(int z)
172 {
173 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
174 }
175
176 static void got_term(int z)
177 {
178 check_bind_event("sigterm");
179 if (die_on_sigterm) {
180 fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
181 } else {
182 putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
183 }
184 }
185
186 static void got_quit(int z)
187 {
188 check_bind_event("sigquit");
189 putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
190 return;
191 }
192
193 static void got_hup(int z)
194 {
195 check_bind_event("sighup");
196 if (die_on_sighup) {
197 fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
198 } else
199 putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
200 do_restart = -2;
201 return;
202 }
203
204 /* Got ILL signal
205 */
206 static void got_ill(int z)
207 {
208 check_bind_event("sigill");
209 }
210
211
212 static void print_version(void)
213 {
214 char x[1024], *z = x;
215
216 strlcpy(x, egg_version, sizeof x);
217 newsplit(&z);
218 newsplit(&z);
219 printf("%s\n", version);
220 if (z[0])
221 printf(" (patches: %s)\n", z);
222 }
223
224 static void print_help(void)
225 {
226 print_version ();
227 printf("\n\
228 Usage: %s [OPTIONS]... [FILE]\n", PACKAGE);
229 printf(_("\n\
230 -h, --help Print help and exit\n\
231 -v, --version Print version and exit\n\
232 -n, --foreground Don't go into the background (default=off)\n\
233 -c --channel-stats (with -n) Display channel stats every 10 seconds\n\
234 -t --terminal (with -n) Use terminal to simulate dcc-chat\n\
235 -m --make-userfile Userfile creation mode\n\
236 FILE optional config filename (default 'config.xml')\n"));
237 printf("\n");
238 }
239
240 static void do_args(int argc, char * const *argv)
241 {
242 int c;
243
244 optarg = 0;
245 optind = 1;
246 opterr = 1;
247 optopt = '?';
248
249 while (1) {
250 int option_index = 0;
251 static struct option long_options[] = {
252 { "help", 0, NULL, 'h' },
253 { "version", 0, NULL, 'v' },
254 { "load-module", 1, NULL, 'p' },
255 { "foreground", 0, NULL, 'n' },
256 { "channel-stats", 0, NULL, 'c' },
257 { "terminal", 0, NULL, 't' },
258 { "make-userfile", 0, NULL, 'm' },
259 { NULL, 0, NULL, 0 }
260 };
261
262 c = getopt_long (argc, argv, "hvp:nctm", long_options, &option_index);
263
264 if (c == -1) break;
265
266 switch (c) {
267 case 'n':
268 backgrd = 0;
269 break;
270
271 case 'c':
272 con_chan = 1;
273 term_z = 0;
274 break;
275
276 case 't':
277 con_chan = 0;
278 term_z = 1;
279 break;
280
281 case 'm':
282 make_userfile = 1;
283 break;
284
285 case 'v':
286 print_version();
287 bg_send_quit(BG_ABORT);
288 exit(0);
289 break; /* this should never be reached */
290
291 case 'h':
292 print_help();
293 bg_send_quit(BG_ABORT);
294 exit(0);
295 break; /* this should never be reached */
296
297 case 0: /* Long option with no short option */
298 case '?': /* Invalid option. */
299 /* getopt_long() already printed an error message. */
300 bg_send_quit(BG_ABORT);
301 exit(1);
302
303 default: /* bug: option not considered. */
304 fprintf (stderr, "%s: option unknown: %c\n", PACKAGE, c);
305 bg_send_quit(BG_ABORT);
306 exit(1);
307 break; /* this should never be reached */
308 }
309 }
310 if (optind < argc)
311 strlcpy(configfile, argv[optind], sizeof configfile);
312 }
313
314 /* Timer info */
315 static int lastmin = 99;
316 static struct tm nowtm;
317
318 /* Called once a second.
319 */
320 static int core_secondly()
321 {
322 static int cnt = 0;
323 int miltime;
324
325 call_hook(HOOK_SECONDLY); /* Will be removed later */
326 cnt++;
327 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
328 if (nowtm.tm_min != lastmin) {
329 int i = 0;
330
331 /* Once a minute */
332 lastmin = (lastmin + 1) % 60;
333 call_hook(HOOK_MINUTELY);
334 /* In case for some reason more than 1 min has passed: */
335 while (nowtm.tm_min != lastmin) {
336 /* Timer drift, dammit */
337 putlog(LOG_DEBUG, "*", "timer: drift (lastmin=%d, now=%d)", lastmin,
338 nowtm.tm_min);
339 i++;
340 lastmin = (lastmin + 1) % 60;
341 call_hook(HOOK_MINUTELY);
342 }
343 if (i > 1)
344 putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
345 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
346 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
347 call_hook(HOOK_5MINUTELY);
348 if (!miltime) { /* At midnight */
349 char s[25];
350
351 strlcpy(s, ctime(&now), sizeof s);
352 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
353 call_hook(HOOK_BACKUP);
354 call_hook(HOOK_DAILY);
355 }
356 }
357 if (nowtm.tm_min == notify_users_at)
358 call_hook(HOOK_HOURLY);
359 }
360 return(0);
361 }
362
363 static void core_minutely()
364 {
365 check_bind_time(&nowtm);
366 }
367
368 static void core_hourly()
369 {
370 }
371
372 static void event_rehash()
373 {
374 check_bind_event("rehash");
375 }
376
377 static void event_prerehash()
378 {
379 check_bind_event("prerehash");
380 }
381
382 static void event_save()
383 {
384 check_bind_event("save");
385 }
386
387 static void event_logfile()
388 {
389 check_bind_event("logfile");
390 }
391
392 static void event_loaded()
393 {
394 check_bind_event("loaded");
395 }
396
397 extern module_entry *module_list;
398
399 void core_party_init();
400 void core_config_init();
401 void telnet_init();
402 void binds_init();
403
404 void patch(const char *str)
405 {
406 char *p = strchr(egg_version, '+');
407
408 if (!p)
409 p = &egg_version[strlen(egg_version)];
410 sprintf(p, "+%s", str);
411 egg_numver++;
412 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
413 }
414
415 /*
416 static inline void garbage_collect(void)
417 {
418 static u_8bit_t run_cnt = 0;
419
420 if (run_cnt == 3)
421 garbage_collect_tclhash();
422 else
423 run_cnt++;
424 }
425 */
426
427 int owner_check(const char *handle)
428 {
429 int len;
430 char *powner;
431
432 len = strlen(handle);
433 if (!len) return(-1);
434
435 powner = core_config.owner;
436 while (powner) {
437 while (*powner && !isalnum(*powner)) powner++;
438 if (!*powner) break;
439 if (!strncasecmp(powner, handle, len)) {
440 powner += len;
441 if (!*powner || isalnum(*powner)) return(0);
442 }
443 while (*powner && isalnum(*powner)) powner++;
444 }
445 return(-1);
446 }
447
448 int file_check(const char *filename)
449 {
450 struct stat sbuf = {0};
451 int r;
452
453 r = stat(filename, &sbuf);
454 if (r) return(-1);
455 errno = 0;
456 if (sbuf.st_mode & (S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) return(-1);
457 return(0);
458 }
459
460 int main(int argc, char **argv)
461 {
462 int xx, i;
463 char s[25];
464 FILE *f;
465 struct sigaction sv;
466 egg_timeval_t howlong;
467 int timeout;
468 void *config_root, *entry;
469 char *modname, *scriptname;
470
471 #ifdef DEBUG
472 /* Make sure it can write core, if you make debug. Else it's pretty
473 * useless (dw)
474 */
475 {
476 #include <sys/resource.h>
477 struct rlimit cdlim;
478
479 cdlim.rlim_cur = RLIM_INFINITY;
480 cdlim.rlim_max = RLIM_INFINITY;
481 setrlimit(RLIMIT_CORE, &cdlim);
482 }
483 #endif
484
485 #ifdef ENABLE_NLS
486 setlocale(LC_MESSAGES, "");
487 bindtextdomain(PACKAGE, LOCALEDIR);
488 textdomain(PACKAGE);
489 #endif
490
491 #include "patch.h"
492 /* Version info! */
493 snprintf(ver, sizeof ver, "%s v%s", PACKAGE, egg_version);
494 snprintf(version, sizeof version, "Eggdrop v%s (C) 1997 Robey Pointer (C) 2003 Eggheads",
495 egg_version);
496 /* Now add on the patchlevel (for Tcl) */
497 sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
498 strcat(egg_version, egg_xtra);
499 #ifdef STOP_UAC
500 {
501 int nvpair[2];
502
503 nvpair[0] = SSIN_UACPROC;
504 nvpair[1] = UAC_NOPRINT;
505 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
506 }
507 #endif
508
509 /* Set up error traps: */
510 sv.sa_handler = got_bus;
511 sigemptyset(&sv.sa_mask);
512 #ifdef SA_RESETHAND
513 sv.sa_flags = SA_RESETHAND;
514 #else
515 sv.sa_flags = 0;
516 #endif
517 sigaction(SIGBUS, &sv, NULL);
518 sv.sa_handler = got_segv;
519 sigaction(SIGSEGV, &sv, NULL);
520 #ifdef SA_RESETHAND
521 sv.sa_flags = 0;
522 #endif
523 sv.sa_handler = got_fpe;
524 sigaction(SIGFPE, &sv, NULL);
525 sv.sa_handler = got_term;
526 sigaction(SIGTERM, &sv, NULL);
527 sv.sa_handler = got_hup;
528 sigaction(SIGHUP, &sv, NULL);
529 sv.sa_handler = got_quit;
530 sigaction(SIGQUIT, &sv, NULL);
531 sv.sa_handler = SIG_IGN;
532 sigaction(SIGPIPE, &sv, NULL);
533 sv.sa_handler = got_ill;
534 sigaction(SIGILL, &sv, NULL);
535
536 /* Initialize variables and stuff */
537 timer_update_now(&egg_timeval_now);
538 now = egg_timeval_now.sec;
539 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
540 lastmin = nowtm.tm_min;
541 srandom(now % (getpid() + getppid()));
542
543 do_args(argc, argv);
544
545 printf("\n%s\n", version);
546 printf(" *** WARNING: Do NOT run this DEVELOPMENT version for any purpose other than testing.\n\n");
547
548 /* Don't allow eggdrop to run as root */
549 if (((int) getuid() == 0) || ((int) geteuid() == 0))
550 fatal(_("ERROR: Eggdrop will not run as root!"), 0);
551
552 if (file_check(configfile)) {
553 if (errno) perror(configfile);
554 else fprintf(stderr, "ERROR\n\nCheck file permissions on your config file!\nMake sure other groups and users cannot read/write it.\n");
555 exit(-1);
556 }
557
558 egg = eggdrop_new();
559 config_init();
560 core_config_init(configfile);
561 egglog_init();
562 logfile_init();
563 script_init();
564 user_init();
565 if (core_config.userfile) user_load(core_config.userfile);
566 partyline_init();
567 core_party_init();
568 telnet_init();
569 modules_init();
570 egg_net_init();
571 core_binds_init();
572
573 if (backgrd)
574 bg_prepare_split();
575
576 strlcpy(s, ctime(&now), sizeof s);
577 strcpy(&s[11], &s[20]);
578 putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
579
580 /* Scan the autoload section of config. */
581 config_root = config_get_root("eggdrop");
582 for (i = 0; (entry = config_exists(config_root, "eggdrop", 0, "autoload", 0, "module", i, NULL)); i++) {
583 modname = NULL;
584 config_get_str(&modname, entry, NULL);
585 module_load(modname);
586 }
587 for (i = 0; (entry = config_exists(config_root, "eggdrop", 0, "autoload", 0, "script", i, NULL)); i++) {
588 scriptname = NULL;
589 config_get_str(&scriptname, entry, NULL);
590 script_load(scriptname);
591 }
592
593
594
595 if (!pid_file[0])
596 snprintf(pid_file, sizeof pid_file, "pid.%s", core_config.botname);
597
598 /* Check for pre-existing eggdrop! */
599 f = fopen(pid_file, "r");
600 if (f != NULL) {
601 fgets(s, 10, f);
602 xx = atoi(s);
603 kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
604 is used */
605 if (errno != ESRCH) {
606 printf(_("I detect %s already running from this directory.\n"), core_config.botname);
607 printf(_("If this is incorrect, erase the %s\n"), pid_file);
608 bg_send_quit(BG_ABORT);
609 exit(1);
610 }
611 }
612
613 /* Move into background? */
614 if (backgrd) {
615 #ifndef CYGWIN_HACKS
616 bg_do_split();
617 } else { /* !backgrd */
618 #endif
619 xx = getpid();
620 if (xx != 0) {
621 FILE *fp;
622
623 /* Write pid to file */
624 unlink(pid_file);
625 fp = fopen(pid_file, "w");
626 if (fp != NULL) {
627 fprintf(fp, "%u\n", xx);
628 if (fflush(fp)) {
629 /* Let the bot live since this doesn't appear to be a botchk */
630 printf(_("* Warning! Could not write %s file!\n"), pid_file);
631 fclose(fp);
632 unlink(pid_file);
633 } else
634 fclose(fp);
635 } else
636 printf(_("* Warning! Could not write %s file!\n"), pid_file);
637 #ifdef CYGWIN_HACKS
638 printf("Launched into the background (pid: %d)\n\n", xx);
639 #endif
640 }
641 }
642
643 use_stderr = 0; /* Stop writing to stderr now */
644 if (backgrd) {
645 /* Ok, try to disassociate from controlling terminal (finger cross) */
646 #if HAVE_SETPGID && !defined(CYGWIN_HACKS)
647 setpgid(0, 0);
648 #endif
649 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
650 freopen("/dev/null", "r", stdin);
651 freopen("/dev/null", "w", stdout);
652 freopen("/dev/null", "w", stderr);
653 #ifdef CYGWIN_HACKS
654 FreeConsole();
655 #endif
656 }
657
658 online_since = now;
659 howlong.sec = 1;
660 howlong.usec = 0;
661 timer_create_repeater(&howlong, core_secondly);
662
663 /* init time'd hooks */
664 add_hook(HOOK_MINUTELY, (Function) core_minutely);
665 add_hook(HOOK_HOURLY, (Function) core_hourly);
666 add_hook(HOOK_REHASH, (Function) event_rehash);
667 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
668 add_hook(HOOK_USERFILE, (Function) event_save);
669 add_hook(HOOK_DAILY, (Function) event_logfile);
670 add_hook(HOOK_LOADED, (Function) event_loaded);
671
672 call_hook(HOOK_LOADED);
673
674 putlog(LOG_DEBUG, "*", "main: entering loop");
675 while (1) {
676 timer_update_now(&egg_timeval_now);
677 now = egg_timeval_now.sec;
678 random(); /* Woop, lets really jumble things */
679 timer_run();
680
681 if (timer_get_shortest(&howlong)) {
682 timeout = 1000;
683 }
684 else {
685 timeout = howlong.sec * 1000 + howlong.usec / 1000;
686 }
687 sockbuf_update_all(timeout);
688 }
689 }

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