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

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Revision 1.178 - (show annotations) (download) (as text)
Wed Jun 23 17:24:43 2004 UTC (15 years ago) by wingman
Branch: MAIN
Changes since 1.177: +6 -6 lines
File MIME type: text/x-chdr
* Added xml_save_str to save xml_node_t into a char *

* Made xml reader more spec compliant and a first start of error handling.
  Now at least we handle some xml errors. Prior you just got "Error while
  loading config file.".

* Added top level elements to config.xml and users.xml.

1 /* main.c
2 *
3 * Copyright (C) 1997 Robey Pointer
4 * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 Eggheads Development Team
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */
20
21 #ifndef lint
22 static const char rcsid[] = "$Id: main.c,v 1.177 2004/06/22 23:20:23 wingman Exp $";
23 #endif
24
25 #if HAVE_CONFIG_H
26 # include <config.h>
27 #endif
28
29 #include <ctype.h>
30 #include <unistd.h>
31 #include <fcntl.h>
32 #include <string.h>
33 #include <stdlib.h>
34 #include <sys/stat.h>
35 #include <errno.h>
36 #include <signal.h>
37 #include <netdb.h>
38 #include <setjmp.h>
39 #include <locale.h>
40 #include <ctype.h>
41 #include <ltdl.h>
42
43 #ifdef TIME_WITH_SYS_TIME
44 # include <sys/time.h>
45 # include <time.h>
46 #else
47 # ifdef HAVE_SYS_TIME_H
48 # include <sys/time.h>
49 # else
50 # include <time.h>
51 # endif
52 #endif
53
54 #include <eggdrop/eggdrop.h>
55 #include "lib/compat/compat.h"
56 #include "debug.h"
57 #include "core_config.h"
58 #include "core_party.h"
59 #include "core_binds.h"
60 #include "logfile.h"
61 #include "terminal.h"
62 #include "bg.h"
63 #include "main.h"
64
65 #ifdef STOP_UAC /* OSF/1 complains a lot */
66 # include <sys/sysinfo.h>
67 # define UAC_NOPRINT 0x00000001 /* Don't report unaligned fixups */
68 #endif
69
70 #ifdef CYGWIN_HACKS
71 # include <windows.h>
72 #endif
73
74 #ifndef _POSIX_SOURCE
75 # define _POSIX_SOURCE 1 /* Solaris needs this */
76 #endif
77
78 #define RUNMODE_NORMAL 1
79 #define RUNMODE_SHUTDOWN 2
80 #define RUNMODE_RESTART 3
81
82 int runmode = 1; /* The most important variable ever! */
83 int backgrd = 1; /* Run in the background? */
84 int make_userfile = 0; /* Start bot in make-userfile mode? */
85 int terminal_mode = 0; /* Terminal mode */
86
87 /* XXX: remove this feature (but not yet) */
88 int debug_run = 0; /* Just init and shutdown */
89
90 const char *configfile = NULL; /* Name of the config file */
91 char pid_file[512]; /* Name of Eggdrop's pid file */
92
93 time_t online_since; /* Time the bot was started */
94 time_t now; /* Current time */
95 egg_timeval_t egg_timeval_now; /* Current time in seconds and microseconds. */
96
97 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
98
99 char version[81];
100
101 static int lastmin = 99;
102 static struct tm nowtm;
103
104 void fatal(const char *errmsg)
105 {
106 putlog(LOG_MISC, "*", "Fatal: %s", errmsg);
107 flushlogs();
108 exit(1);
109 }
110
111 static void got_bus(int z)
112 {
113 fatal("BUS ERROR.");
114 }
115
116 static void got_segv(int z)
117 {
118 fatal("SEGMENT VIOLATION.");
119 }
120
121 static void got_fpe(int z)
122 {
123 fatal("FLOATING POINT ERROR.");
124 }
125
126 static void got_term(int z)
127 {
128 eggdrop_event("sigterm");
129 if (core_config.die_on_sigterm) core_shutdown(SHUTDOWN_SIGTERM, NULL, NULL);
130 else putlog(LOG_MISC, "*", _("Received TERM signal (ignoring)."));
131 }
132
133 static void got_quit(int z)
134 {
135 eggdrop_event("sigquit");
136 putlog(LOG_MISC, "*", _("Received QUIT signal (ignoring)."));
137 return;
138 }
139
140 static void got_hup(int z)
141 {
142 eggdrop_event("sighup");
143 putlog(LOG_MISC, "*", _("Received HUP signal (ignoring)."));
144 return;
145 }
146
147 static void print_version(void)
148 {
149 printf("%s\n", version);
150 }
151
152 static void print_help(char *const *argv)
153 {
154 print_version();
155 printf(_("\nUsage: %s [OPTIONS]... [FILE]\n"), argv[0]);
156 printf(_("\n\
157 -h, --help Print help and exit\n\
158 -v, --version Print version and exit\n\
159 -n, --foreground Don't go into the background (default=off)\n\
160 -c --channel-stats (with -n) Display channel stats every 10 seconds\n\
161 -t --terminal (with -n) Use terminal to simulate dcc-chat\n\
162 -m --make-userfile Userfile creation mode\n\
163 -d --debug Do a debugging dry-run\n\
164 FILE optional config filename (default 'config.xml')\n"));
165 printf("\n");
166 }
167
168 static void do_args(int argc, char *const *argv)
169 {
170 int c;
171
172 optarg = 0;
173 optind = 1;
174 opterr = 1;
175 optopt = '?';
176
177 while (1) {
178 int option_index = 0;
179
180 static struct option long_options[] = {
181 { "help", 0, NULL, 'h' },
182 { "version", 0, NULL, 'v' },
183 { "load-module", 1, NULL, 'p' },
184 { "foreground", 0, NULL, 'n' },
185 { "terminal", 0, NULL, 't' },
186 { "make-userfile", 0, NULL, 'm' },
187 { "debug", 0, NULL, 'd' },
188 {NULL, 0, NULL, 0}
189 };
190
191 c = getopt_long(argc, argv, "hvp:nctmd", long_options, &option_index);
192 if (c == -1) break;
193 switch (c) {
194 case 'n':
195 backgrd = 0;
196 break;
197 case 't':
198 terminal_mode = 1;
199 break;
200 case 'm':
201 make_userfile = 1;
202 break;
203 case 'd':
204 backgrd = 0;
205 debug_run = 1;
206 break;
207 case 'v':
208 print_version();
209 exit(0);
210 break; /* this should never be reached */
211 case 'h':
212 print_help(argv);
213 exit(0);
214 break; /* this should never be reached */
215 case 0: /* Long option with no short option */
216 case '?': /* Invalid option. */
217 /* getopt_long() already printed an error message. */
218 exit(1);
219 default: /* bug: option not considered. */
220 fprintf(stderr, _("%s: option unknown: %c\n"), argv[0], c);
221 exit(1);
222 break; /* this should never be reached */
223 }
224 }
225 if (optind < argc) configfile = argv[optind];
226 else configfile = "config.xml";
227 }
228
229 /* Called once a second.
230 */
231 static int core_secondly()
232 {
233 static int cnt = 0;
234 int miltime;
235
236 check_bind_secondly();
237 cnt++;
238 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
239 if (nowtm.tm_min != lastmin) {
240 int i = 0;
241
242 /* Once a minute */
243 lastmin = (lastmin + 1) % 60;
244 eggdrop_event("minutely");
245 check_bind_time(&nowtm);
246 /* In case for some reason more than 1 min has passed: */
247 while (nowtm.tm_min != lastmin) {
248 /* Timer drift, dammit */
249 putlog(LOG_DEBUG, "*", "timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
250 i++;
251 lastmin = (lastmin + 1) % 60;
252 eggdrop_event("minutely");
253 }
254 if (i > 1) putlog(LOG_MISC, "*", _("Warning: timer drift (%d minutes)."), i);
255
256 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
257 if (nowtm.tm_min % 5 == 0) { /* 5 minutes */
258 eggdrop_event("5minutely");
259 if (!miltime) { /* At midnight */
260 char s[25];
261
262 strlcpy(s, ctime(&now), sizeof s);
263 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
264 eggdrop_event("backup");
265 eggdrop_event("daily");
266 }
267 }
268 }
269 return(0);
270 }
271
272
273 int file_check(const char *filename)
274 {
275 struct stat sbuf = {0};
276 int r;
277
278 r = stat(filename, &sbuf);
279 if (r) return(-1);
280 errno = 0;
281 if (sbuf.st_mode & (S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) return(-1);
282 return(0);
283 }
284
285 static int create_userfile(void)
286 {
287 user_t *owner;
288 char handle[512], password[12];
289 int len;
290
291 printf("\n");
292 if (user_count() != 0) {
293 printf("You are trying to create a new userfile, but the old one still exists (%s)!\n", core_config.userfile);
294 printf("Please remove the userfile, or do not pass the -m option.\n\n");
295 return(-1);
296 }
297
298 printf("Hello! I see you are creating a new userfile.\n\n");
299 printf("Let's create the owner account.\n\n");
300 do {
301 printf("Enter the owner handle: ");
302 fflush(stdout);
303 fgets(handle, sizeof(handle), stdin);
304 for (len = 0; handle[len]; len++) {
305 if (!ispunct(handle[len]) && !isalnum(handle[len])) break;
306 }
307 if (len == 0) printf("Come on, enter a real handle.\n\n");
308 } while (len <= 0);
309 handle[len] = 0;
310
311 owner = user_new(handle);
312 if (!owner) {
313 printf("Failed to create user record! Out of memory?\n\n");
314 return(-1);
315 }
316
317 user_rand_pass(password, sizeof(password));
318 user_set_pass(owner, password);
319 user_set_flags_str(owner, NULL, "+n");
320 printf("Your owner handle is '%s' and your password is '%s' (without the quotes).\n\n", handle, password);
321 memset(password, 0, sizeof(password));
322 str_redup(&core_config.owner, handle);
323 core_config_save();
324 user_save(core_config.userfile);
325
326 return(0);
327 }
328
329 static void init_signals(void)
330 {
331 struct sigaction sv;
332
333
334 sv.sa_handler = got_bus;
335 sigemptyset(&sv.sa_mask);
336 #ifdef SA_RESETHAND
337 sv.sa_flags = SA_RESETHAND;
338 #else
339 sv.sa_flags = 0;
340 #endif
341 sigaction(SIGBUS, &sv, NULL);
342
343 sv.sa_handler = got_segv;
344 sigaction(SIGSEGV, &sv, NULL);
345 #ifdef SA_RESETHAND
346 sv.sa_flags = 0;
347 #endif
348
349 sv.sa_handler = got_fpe;
350 sigaction(SIGFPE, &sv, NULL);
351
352 sv.sa_handler = got_term;
353 sigaction(SIGTERM, &sv, NULL);
354
355 sv.sa_handler = got_hup;
356 sigaction(SIGHUP, &sv, NULL);
357
358 sv.sa_handler = got_quit;
359 sigaction(SIGQUIT, &sv, NULL);
360
361 sv.sa_handler = SIG_IGN;
362 sigaction(SIGPIPE, &sv, NULL);
363 }
364
365 static void core_shutdown_or_restart()
366 {
367 /* notifiy shutdown listeners */
368 check_bind_shutdown();
369
370 putlog(LOG_MISC, "*", _("Saving user file..."));
371 user_save(core_config.userfile);
372
373 putlog(LOG_MISC, "*", _("Saving config file..."));
374 core_config_save();
375
376 /* destroy terminal */
377 if (terminal_mode && runmode != RUNMODE_RESTART)
378 terminal_shutdown();
379
380 /* unload core help */
381 help_unload_by_module("core");
382
383 /* shutdown core binds */
384 core_binds_shutdown();
385
386 /* shutdown logging */
387 logfile_shutdown();
388
389 /* shutdown libeggdrop */
390 eggdrop_shutdown();
391
392 /* force a garbage run */
393 garbage_run();
394
395 /* just remove pid file if didn't restart */
396 if (runmode != RUNMODE_RESTART)
397 unlink(pid_file);
398 }
399
400 int main(int argc, char **argv)
401 {
402 int timeout;
403
404 #ifdef DEBUG
405 {
406 # include <sys/resource.h>
407 struct rlimit cdlim;
408
409 cdlim.rlim_cur = RLIM_INFINITY;
410 cdlim.rlim_max = RLIM_INFINITY;
411 setrlimit(RLIMIT_CORE, &cdlim);
412 }
413 #endif
414
415 init_signals();
416
417 #ifdef ENABLE_NLS
418 setlocale(LC_MESSAGES, "");
419 bindtextdomain(PACKAGE, LOCALEDIR);
420 textdomain(PACKAGE);
421 #endif
422
423 /* Initialize ltdl. */
424 LTDL_SET_PRELOADED_SYMBOLS();
425 if (lt_dlinit()) {
426 printf("Fatal error initializing ltdl: %s\n", lt_dlerror());
427 return(-1);
428 }
429
430 snprintf(version, sizeof version, "Eggdrop v%s (C) 1997 Robey Pointer (C) 2004 Eggheads Development Team", VERSION);
431
432 #ifdef STOP_UAC
433 {
434 int nvpair[2];
435
436 nvpair[0] = SSIN_UACPROC;
437 nvpair[1] = UAC_NOPRINT;
438 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
439 }
440 #endif
441
442 timer_update_now(&egg_timeval_now);
443 now = egg_timeval_now.sec;
444 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
445 lastmin = nowtm.tm_min;
446
447 srandom(now % (getpid() + getppid()));
448
449 do_args(argc, argv);
450 printf("\n%s\n", version);
451 printf("WARNING: Do NOT run this DEVELOPMENT version for any purpose other than testing.\n\n");
452
453 /* we may not run as root */
454 if (((int) getuid() == 0) || ((int) geteuid() == 0)) {
455 fatal("Eggdrop will not run as root!");
456 return -1;
457 }
458
459 /* config file may not be world read/writeable */
460 if (file_check(configfile)) {
461 if (errno) perror(configfile);
462 else {
463 fprintf(stderr, "ERROR\n");
464 fprintf(stderr, "\tCheck file permissions on your config file!");
465 fprintf(stderr, "\tMake sure other groups and users cannot read/write it.\n");
466 return -1;
467 }
468 }
469
470 /* set uptime */
471 online_since = now;
472
473 do {
474 int tid;
475 egg_timeval_t howlong;
476
477 /* default select timeout is 1 sec */
478 howlong.sec = 1;
479 howlong.usec = 0;
480
481 tid = timer_create_repeater(&howlong, "main loop", core_secondly);
482
483 /* init core */
484 if (!core_init())
485 break;
486
487 /* set normal running mode */
488 runmode = RUNMODE_NORMAL;
489
490 putlog(LOG_DEBUG, "*", "Entering main loop.");
491
492 /* main loop */
493 while (!debug_run && runmode == RUNMODE_NORMAL) {
494 /* Update the time. */
495 timer_update_now(&egg_timeval_now);
496 now = egg_timeval_now.sec;
497
498 /* Run any expired timers. */
499 timer_run();
500
501 /* Figure out how long to wait for activity. */
502 if (timer_get_shortest(&howlong)) timeout = 1000;
503 else timeout = howlong.sec * 1000 + howlong.usec / 1000;
504
505 /* Wait and monitor sockets. */
506 sockbuf_update_all(timeout);
507
508 /* Run any scheduled cleanups. */
509 garbage_run();
510 }
511
512 /* shutdown secondly timer */
513 timer_destroy(tid);
514
515 /* Save user file, config file, ... */
516 core_shutdown_or_restart();
517
518 /* the only chance to loop again is that running = 2, meaning
519 we have a restart */
520 } while (runmode == RUNMODE_RESTART);
521
522 if (debug_run)
523 mem_dbg_stats();
524
525 return 0;
526 }
527
528 int core_init()
529 {
530 int i;
531 char *name;
532 void *config_root, *entry;
533 char datetime[25];
534 static int lockfd = -1;
535 struct flock lock;
536
537 /* init libeggdrop */
538 eggdrop_init();
539
540 /* load config */
541 if (core_config_init(configfile) != 0)
542 return (-1);
543
544 /* init logging */
545 logfile_init();
546
547 /* did the user specify -m? */
548 if (make_userfile) {
549 if (create_userfile()) return(-1);
550 make_userfile = 0;
551 }
552
553 /* init background mode and pid file */
554 if (runmode != RUNMODE_RESTART) {
555 if (backgrd) bg_begin_split();
556 }
557
558 /* Check lock file. */
559 if (core_config.lockfile && lockfd == -1) {
560 lockfd = open(core_config.lockfile, O_WRONLY | O_CREAT, S_IWUSR);
561 if (lockfd < 0) {
562 fatal("Could not open lock file!");
563 }
564 memset(&lock, 0, sizeof(lock));
565 lock.l_type = F_WRLCK;
566 if (fcntl(lockfd, F_SETLK, &lock) != 0) {
567 fatal("Lock file is already locked! Is eggdrop already running?");
568 }
569 }
570
571 /* just issue this "Loading Eggdrop" message if we are not
572 * restarting */
573 if (runmode != RUNMODE_RESTART) {
574 strlcpy(datetime, ctime(&now), sizeof(datetime));
575 strcpy(&datetime[11], &datetime[20]);
576 putlog(LOG_ALL, "*", "Loading Eggdrop %s (%s)", VERSION, datetime);
577 }
578
579 /* load userlist */
580 if (core_config.userfile)
581 user_load(core_config.userfile);
582
583 /* init core bindings */
584 core_binds_init();
585
586 /* init core partyline */
587 core_party_init();
588
589 /* Load core help */
590 help_load_by_module ("core");
591
592 /* Put the module directory in the ltdl search path. */
593 if (core_config.module_path)
594 module_add_dir(core_config.module_path);
595
596 /* Scan the autoload section of config. */
597 config_root = config_get_root("eggdrop");
598 for (i = 0; (entry = config_exists(config_root, "eggdrop", 0, "autoload", 0, "module", i, NULL)); i++) {
599 name = NULL;
600 config_get_str(&name, entry, NULL);
601 module_load(name);
602 }
603 for (i = 0; (entry = config_exists(config_root, "eggdrop", 0, "autoload", 0, "script", i, NULL)); i++) {
604 name = NULL;
605 config_get_str(&name, entry, NULL);
606 script_load(name);
607 }
608
609 /* notify init listeners */
610 check_bind_init();
611
612 /* start terminal */
613 if (runmode != RUNMODE_RESTART) {
614 if (backgrd) bg_finish_split();
615 if (terminal_mode) terminal_init();
616 }
617
618 return 1;
619 }
620
621 int core_restart(const char *nick)
622 {
623 putlog(LOG_MISC, "*", "Restarting...");
624 runmode = RUNMODE_RESTART;
625 return 1;
626 }
627
628 int core_shutdown(int how, const char *nick, const char *reason)
629 {
630 if (how == SHUTDOWN_SIGTERM)
631 putlog(LOG_MISC, "*", ("Received TERM signal, shutting down."));
632 else if (how != SHUTDOWN_RESTART)
633 putlog(LOG_MISC, "*", ("Shutdown requested by %s: %s"), nick,
634 (reason) ? reason : _("No reason"));
635
636 /* check how to shut down */
637 switch (how) {
638
639 case (SHUTDOWN_RESTART):
640 runmode = RUNMODE_RESTART;
641 break;
642
643 case (SHUTDOWN_GRACEFULL):
644 runmode = RUNMODE_SHUTDOWN;
645 break;
646
647 /* These two cases are treaded special because something
648 * unusual happened and we're better off if we exit() NOW
649 * than doing a gracefull shutdown with freeing all
650 * memory, closing all sockets, ... */
651 case (SHUTDOWN_HARD):
652 case (SHUTDOWN_SIGTERM):
653 runmode = RUNMODE_SHUTDOWN;
654 core_shutdown_or_restart();
655 exit(0);
656 break;
657
658 }
659
660 return BIND_RET_LOG;
661 }

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