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Contents of /eggdrop1.9/src/main.c

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Revision 1.191 - (show annotations) (download) (as text)
Tue Nov 6 00:05:40 2007 UTC (11 years, 9 months ago) by sven
Branch: MAIN
CVS Tags: HEAD
Changes since 1.190: +1 -3 lines
File MIME type: text/x-chdr
 * Added a new socketfilter that provides a per socket timer for easy
   implementation of various timeouts.
 * All sockets that expect user logins now have a 60 second timeout for
   the user to supply a valid login.
 * All botnet sockets now have a 30 second timeout for the bot to do a
   successful login. After that it has a 90 second timeout after which
   a ping will be sent. After another 90 seconds the socket is closed.

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 1.190 2007-05-09 01:32:32 sven Exp $";
23 #endif
24
25 #include <eggdrop/eggdrop.h>
26 #include <unistd.h>
27 #include <fcntl.h>
28 #include <sys/stat.h>
29 #include <errno.h>
30 #include <signal.h>
31 #include <locale.h>
32 #include <ltdl.h>
33
34 #include "debug.h"
35 #include "core_config.h"
36 #include "core_party.h"
37 #include "core_binds.h"
38 #include "logfile.h"
39 #include "terminal.h"
40 #include "bg.h"
41 #include "main.h"
42
43 #ifdef STOP_UAC /* OSF/1 complains a lot */
44 # include <sys/sysinfo.h>
45 # define UAC_NOPRINT 0x00000001 /* Don't report unaligned fixups */
46 #endif
47
48 #ifdef CYGWIN_HACKS
49 # include <windows.h>
50 #endif
51
52 #ifndef _POSIX_SOURCE
53 # define _POSIX_SOURCE 1 /* Solaris needs this */
54 #endif
55
56 #define RUNMODE_NORMAL 1
57 #define RUNMODE_SHUTDOWN 2
58 #define RUNMODE_RESTART 3
59
60 int runmode = 1; /* The most important variable ever! */
61 int backgrd = 1; /* Run in the background? */
62 int make_userfile = 0; /* Start bot in make-userfile mode? */
63 int terminal_mode = 0; /* Terminal mode */
64
65 /* XXX: remove this feature (but not yet) */
66 int debug_run = 0; /* Just init and shutdown */
67
68 const char *configfile = NULL; /* Name of the config file */
69 char pid_file[512]; /* Name of Eggdrop's pid file */
70
71 time_t online_since; /* Time the bot was started */
72 time_t now; /* Current time */
73 egg_timeval_t egg_timeval_now; /* Current time in seconds and microseconds. */
74
75 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
76
77 char version[81];
78
79 static int lastmin = 99;
80 static struct tm nowtm;
81
82 void fatal(const char *errmsg)
83 {
84 putlog(LOG_MISC, "*", "Fatal: %s", errmsg);
85 flushlogs();
86 exit(1);
87 }
88
89 static void got_bus(int z)
90 {
91 fatal("BUS ERROR.");
92 }
93
94 static void got_segv(int z)
95 {
96 fatal("SEGMENT VIOLATION.");
97 }
98
99 static void got_fpe(int z)
100 {
101 fatal("FLOATING POINT ERROR.");
102 }
103
104 static void got_term(int z)
105 {
106 eggdrop_event("sigterm");
107 if (core_config.die_on_sigterm) core_shutdown(SHUTDOWN_SIGTERM, NULL, NULL);
108 else putlog(LOG_MISC, "*", _("Received TERM signal (ignoring)."));
109 }
110
111 static void got_quit(int z)
112 {
113 eggdrop_event("sigquit");
114 putlog(LOG_MISC, "*", _("Received QUIT signal (ignoring)."));
115 return;
116 }
117
118 static void got_hup(int z)
119 {
120 eggdrop_event("sighup");
121 putlog(LOG_MISC, "*", _("Received HUP signal (ignoring)."));
122 return;
123 }
124
125 static void print_version(void)
126 {
127 printf("%s\n", version);
128 }
129
130 static void print_help(char *const *argv)
131 {
132 print_version();
133 printf(_("\nUsage: %s [OPTIONS]... [FILE]\n"), argv[0]);
134 printf(_("\n\
135 -h, --help Print help and exit\n\
136 -v, --version Print version and exit\n\
137 -n, --foreground Don't go into the background (default=off)\n\
138 -c --channel-stats (with -n) Display channel stats every 10 seconds\n\
139 -t --terminal (with -n) Use terminal to simulate dcc-chat\n\
140 -m --make-userfile Userfile creation mode\n\
141 -d --debug Do a debugging dry-run\n\
142 FILE optional config filename (default 'config.xml')\n"));
143 printf("\n");
144 }
145
146 static void do_args(int argc, char **argv)
147 {
148 int c;
149
150 optarg = 0;
151 optind = 1;
152 opterr = 1;
153 optopt = '?';
154
155 while (1) {
156 int option_index = 0;
157
158 static struct option long_options[] = {
159 { "help", 0, NULL, 'h' },
160 { "version", 0, NULL, 'v' },
161 { "load-module", 1, NULL, 'p' },
162 { "foreground", 0, NULL, 'n' },
163 { "terminal", 0, NULL, 't' },
164 { "make-userfile", 0, NULL, 'm' },
165 { "debug", 0, NULL, 'd' },
166 {NULL, 0, NULL, 0}
167 };
168
169 c = getopt_long(argc, argv, "hvp:nctmd", long_options, &option_index);
170 if (c == -1) break;
171 switch (c) {
172 case 'n':
173 backgrd = 0;
174 break;
175 case 't':
176 terminal_mode = 1;
177 break;
178 case 'm':
179 make_userfile = 1;
180 break;
181 case 'd':
182 backgrd = 0;
183 debug_run = 1;
184 break;
185 case 'v':
186 print_version();
187 exit(0);
188 break; /* this should never be reached */
189 case 'h':
190 print_help(argv);
191 exit(0);
192 break; /* this should never be reached */
193 case 0: /* Long option with no short option */
194 case '?': /* Invalid option. */
195 /* getopt_long() already printed an error message. */
196 exit(1);
197 default: /* bug: option not considered. */
198 fprintf(stderr, _("%s: option unknown: %c\n"), argv[0], c);
199 exit(1);
200 break; /* this should never be reached */
201 }
202 }
203 if (optind < argc) {
204 configfile = argv[optind++];
205 eggdrop_set_params((const char **)&argv[optind], argc-optind);
206 }
207 else configfile = "config.xml";
208 }
209
210 /* Called once a second.
211 */
212 static int core_secondly()
213 {
214 static int cnt = 0;
215 int miltime;
216
217 check_bind_secondly();
218 cnt++;
219 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
220 if (nowtm.tm_min != lastmin) {
221 int i = 0;
222
223 /* Once a minute */
224 lastmin = (lastmin + 1) % 60;
225 eggdrop_event("minutely");
226 check_bind_time(&nowtm);
227 /* In case for some reason more than 1 min has passed: */
228 while (nowtm.tm_min != lastmin) {
229 /* Timer drift, dammit */
230 putlog(LOG_DEBUG, "*", "timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
231 i++;
232 lastmin = (lastmin + 1) % 60;
233 eggdrop_event("minutely");
234 }
235 if (i > 1) putlog(LOG_MISC, "*", _("Warning: timer drift (%d minutes)."), i);
236
237 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
238 if (nowtm.tm_min % 5 == 0) {
239 eggdrop_event("5minutely");
240 botnet_autolink();
241 }
242 if (nowtm.tm_min == 0) eggdrop_event("hourly");
243 if (!miltime) { /* At midnight */
244 char s[25];
245
246 strlcpy(s, ctime(&now), sizeof s);
247 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
248 eggdrop_event("backup");
249 eggdrop_event("daily");
250 }
251 }
252 return(0);
253 }
254
255
256 int file_check(const char *filename)
257 {
258 struct stat sbuf = {0};
259 int r;
260
261 r = stat(filename, &sbuf);
262 if (r) return(-1);
263 errno = 0;
264 if (sbuf.st_mode & (S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) return(-1);
265 return(0);
266 }
267
268 static int create_userfile(void)
269 {
270 user_t *owner;
271 char handle[512], password[12];
272 int len;
273
274 printf("\n");
275 if (user_count() != 0) {
276 printf("You are trying to create a new userfile, but the old one still exists (%s)!\n", core_config.userfile);
277 printf("Please remove the userfile, or do not pass the -m option.\n\n");
278 return(-1);
279 }
280
281 printf("Hello! I see you are creating a new userfile.\n\n");
282 printf("Let's create the owner account.\n\n");
283 do {
284 printf("Enter the owner handle: ");
285 fflush(stdout);
286 fgets(handle, sizeof(handle), stdin);
287 for (len = 0; handle[len]; len++) {
288 if (!ispunct(handle[len]) && !isalnum(handle[len])) break;
289 }
290 if (len == 0) printf("Come on, enter a real handle.\n\n");
291 } while (len <= 0);
292 handle[len] = 0;
293
294 owner = user_new(handle);
295 if (!owner) {
296 printf("Failed to create user record! Out of memory?\n\n");
297 return(-1);
298 }
299
300 user_rand_pass(password, sizeof(password));
301 user_set_pass(owner, password);
302 user_set_flags_str(owner, NULL, "+n");
303 printf("Your owner handle is '%s' and your password is '%s' (without the quotes).\n\n", handle, password);
304 memset(password, 0, sizeof(password));
305 str_redup(&core_config.owner, handle);
306 core_config_save();
307 user_save(core_config.userfile);
308
309 return(0);
310 }
311
312 static void init_signals(void)
313 {
314 struct sigaction sv;
315
316
317 sv.sa_handler = got_bus;
318 sigemptyset(&sv.sa_mask);
319 #ifdef SA_RESETHAND
320 sv.sa_flags = SA_RESETHAND;
321 #else
322 sv.sa_flags = 0;
323 #endif
324 sigaction(SIGBUS, &sv, NULL);
325
326 sv.sa_handler = got_segv;
327 //sigaction(SIGSEGV, &sv, NULL);
328 #ifdef SA_RESETHAND
329 sv.sa_flags = 0;
330 #endif
331
332 sv.sa_handler = got_fpe;
333 sigaction(SIGFPE, &sv, NULL);
334
335 sv.sa_handler = got_term;
336 sigaction(SIGTERM, &sv, NULL);
337
338 sv.sa_handler = got_hup;
339 sigaction(SIGHUP, &sv, NULL);
340
341 sv.sa_handler = got_quit;
342 sigaction(SIGQUIT, &sv, NULL);
343
344 sv.sa_handler = SIG_IGN;
345 sigaction(SIGPIPE, &sv, NULL);
346
347 sv.sa_handler = SIG_IGN;
348 sigaction(SIGUSR1, &sv, NULL);
349 }
350
351 static void core_shutdown_or_restart()
352 {
353 /* notifiy shutdown listeners */
354 check_bind_shutdown();
355
356 putlog(LOG_MISC, "*", _("Saving user file..."));
357 user_save(core_config.userfile);
358
359 /* destroy terminal */
360 if (terminal_mode)
361 terminal_shutdown(runmode);
362
363 /* unload core help */
364 //help_unload_by_module("core");
365
366 /* shutdown core binds */
367 core_binds_shutdown();
368
369 /* shutdown logging */
370 logfile_shutdown();
371
372 putlog(LOG_MISC, "*", _("Saving config file..."));
373 core_config_save();
374
375 /* shutdown libeggdrop */
376 eggdrop_shutdown();
377
378 /* force a garbage run */
379 garbage_run();
380
381 /* just remove pid file if didn't restart */
382 if (runmode != RUNMODE_RESTART)
383 unlink(pid_file);
384 }
385
386 int main(int argc, char **argv)
387 {
388 int timeout;
389
390 #ifdef DEBUG
391 {
392 # include <sys/resource.h>
393 struct rlimit cdlim;
394
395 cdlim.rlim_cur = RLIM_INFINITY;
396 cdlim.rlim_max = RLIM_INFINITY;
397 setrlimit(RLIMIT_CORE, &cdlim);
398 }
399 #endif
400
401 init_signals();
402
403 #ifdef ENABLE_NLS
404 setlocale(LC_MESSAGES, "");
405 bindtextdomain(PACKAGE, LOCALEDIR);
406 textdomain(PACKAGE);
407 #endif
408
409 /* Initialize ltdl. */
410 LTDL_SET_PRELOADED_SYMBOLS();
411 if (lt_dlinit()) {
412 printf("Fatal error initializing ltdl: %s\n", lt_dlerror());
413 return(-1);
414 }
415
416 snprintf(version, sizeof version, "Eggdrop v%s (C) 1997 Robey Pointer (C) 2004 Eggheads Development Team", VERSION);
417
418 #ifdef STOP_UAC
419 {
420 int nvpair[2];
421
422 nvpair[0] = SSIN_UACPROC;
423 nvpair[1] = UAC_NOPRINT;
424 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
425 }
426 #endif
427
428 timer_update_now(&egg_timeval_now);
429 now = egg_timeval_now.sec;
430 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
431 lastmin = nowtm.tm_min;
432
433 srandom(now % (getpid() + getppid()));
434
435 do_args(argc, argv);
436 printf("\n%s\n", version);
437 printf("WARNING: Do NOT run this DEVELOPMENT version for any purpose other than testing.\n\n");
438
439 /* we may not run as root */
440 if (((int) getuid() == 0) || ((int) geteuid() == 0)) {
441 fprintf(stderr, "ERROR\n");
442 fprintf(stderr, "\tEggdrop will not run as root!\n\n");
443 return -1;
444 }
445
446 init_flag_map();
447
448 /* config file may not be world read/writeable */
449 if (file_check(configfile)) {
450 fprintf(stderr, "ERROR\n");
451 if (errno) {
452 fprintf(stderr, "\tFailed to load config file '%s': %s\n\n", configfile, strerror(errno));
453 } else {
454 fprintf(stderr, "\tCheck file permissions on your config file '%s'!\n", configfile);
455 fprintf(stderr, "\tMake sure other groups and users cannot read/write it.\n\n");
456 }
457 return -1;
458 }
459
460 /* set uptime */
461 online_since = now;
462
463 do {
464 int tid;
465 egg_timeval_t howlong;
466
467 /* default select timeout is 1 sec */
468 howlong.sec = 1;
469 howlong.usec = 0;
470
471 tid = timer_create_repeater(&howlong, "main loop", core_secondly);
472
473 /* init core */
474 if (core_init() != 0)
475 break;
476
477 /* set normal running mode */
478 runmode = RUNMODE_NORMAL;
479
480 /* try to link other bots */
481 botnet_autolink();
482
483 putlog(LOG_DEBUG, "*", "Entering main loop.");
484
485 /* main loop */
486 while (!debug_run && runmode == RUNMODE_NORMAL) {
487 /* Update the time. */
488 timer_update_now(&egg_timeval_now);
489 now = egg_timeval_now.sec;
490
491 /* Run any expired timers. */
492 timer_run();
493
494 /* Figure out how long to wait for activity. */
495 if (timer_get_shortest(&howlong)) timeout = 1000;
496 else timeout = howlong.sec * 1000 + howlong.usec / 1000;
497
498 /* Wait and monitor sockets. */
499 sockbuf_update_all(timeout);
500
501 /* Run any scheduled cleanups. */
502 garbage_run();
503 }
504
505 /* shutdown secondly timer */
506 timer_destroy(tid);
507
508 /* Save user file, config file, ... */
509 core_shutdown_or_restart();
510
511 /* the only chance to loop again is that running = 2, meaning
512 we have a restart */
513 } while (runmode == RUNMODE_RESTART);
514
515 return 0;
516 }
517
518 int core_init()
519 {
520 int i;
521 char *name;
522 void *config_root, *entry;
523 char datetime[25];
524 static int lockfd = -1;
525 struct flock lock;
526
527 /* init libeggdrop */
528 eggdrop_init();
529
530 /* load config */
531 if (core_config_init(configfile) != 0)
532 return (-1);
533
534 /* init logging */
535 logfile_init();
536
537 /* did the user specify -m? */
538 if (make_userfile) {
539 if (create_userfile()) return(-1);
540 make_userfile = 0;
541 }
542
543 /* init background mode and pid file */
544 if (runmode != RUNMODE_RESTART) {
545 if (backgrd) bg_begin_split();
546 }
547
548 /* Check lock file. */
549 if (core_config.lockfile && lockfd == -1) {
550 lockfd = open(core_config.lockfile, O_WRONLY | O_CREAT, S_IWUSR);
551 if (lockfd < 0) {
552 fatal("Could not open lock file!");
553 }
554 memset(&lock, 0, sizeof(lock));
555 lock.l_type = F_WRLCK;
556 if (fcntl(lockfd, F_SETLK, &lock) != 0) {
557 fatal("Lock file is already locked! Is eggdrop already running?");
558 }
559 }
560
561 /* just issue this "Loading Eggdrop" message if we are not
562 * restarting */
563 if (runmode != RUNMODE_RESTART) {
564 strlcpy(datetime, ctime(&now), sizeof(datetime));
565 strcpy(&datetime[11], &datetime[20]);
566 putlog(LOG_ALL, "*", "Loading Eggdrop %s (%s)", VERSION, datetime);
567 }
568
569 /* load userlist */
570 if (core_config.userfile)
571 user_load(core_config.userfile);
572
573 /* init core bindings */
574 core_binds_init();
575
576 /* init core partyline */
577 core_party_init();
578
579 /* Load core help */
580 help_load_by_module ("core");
581
582 /* Put the module directory in the ltdl search path. */
583 if (core_config.module_path) module_add_dir(core_config.module_path);
584
585 /* Set a botname. */
586 if (core_config.botname) botnet_set_name(core_config.botname);
587
588 /* Initialize help system. */
589 if (core_config.help_path) {
590 help_set_default_path(core_config.help_path);
591 /* Load all help files here... */
592 }
593
594 /* Scan the autoload section of config. */
595 config_root = config_get_root("eggdrop");
596 for (i = 0; (entry = config_exists(config_root, "eggdrop", 0, "autoload", 0, "module", i, NULL)); i++) {
597 name = NULL;
598 config_get_str(&name, entry, NULL);
599 module_load(name);
600 /* For now we'll just load these help files... */
601 help_load_by_module(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 }
616 if (terminal_mode) terminal_init();
617
618 return (0);
619 }
620
621 int core_restart(const char *nick)
622 {
623 putlog(LOG_MISC, "*", "Restarting...");
624 runmode = RUNMODE_RESTART;
625 return (0);
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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