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

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Revision 1.155 - (show annotations) (download) (as text)
Tue Dec 16 03:26:42 2003 UTC (15 years, 8 months ago) by wcc
Branch: MAIN
Changes since 1.154: +3 -1 lines
File MIME type: text/x-chdr
* Fixes from last commit.

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, 2004 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 1.154 2003/12/16 03:13:51 wcc Exp $";
34 #endif
35
36 #include <ctype.h>
37 #include <unistd.h>
38 #include <eggdrop/eggdrop.h>
39 #include "main.h"
40 #include "core_config.h"
41 #include "bg.h"
42 #include "core_binds.h"
43 #include "logfile.h"
44 #include <fcntl.h>
45
46 #ifdef TIME_WITH_SYS_TIME
47 # include <sys/time.h>
48 # include <time.h>
49 #else
50 # ifdef HAVE_SYS_TIME_H
51 # include <sys/time.h>
52 # else
53 # include <time.h>
54 # endif
55 #endif
56
57 #include <sys/stat.h>
58 #include <errno.h>
59 #include <signal.h>
60 #include <netdb.h>
61 #include <setjmp.h>
62 #include <locale.h>
63 #include <ctype.h>
64 #include <ltdl.h>
65
66 #ifdef STOP_UAC /* OSF/1 complains a lot */
67 # include <sys/sysinfo.h>
68 # define UAC_NOPRINT 0x00000001 /* Don't report unaligned fixups */
69 #endif
70
71 #ifdef CYGWIN_HACKS
72 # include <windows.h>
73 #endif
74
75 #ifndef _POSIX_SOURCE
76 # define _POSIX_SOURCE 1 /* Solaris needs this */
77 #endif
78
79 eggdrop_t *egg = NULL; /* Eggdrop's context */
80
81 int backgrd = 1; /* Run in the background? */
82 int con_chan = 0; /* Foreground: constantly display channel stats? */
83 int term_z = 0; /* Foreground: use the terminal as a partyline? */
84 int make_userfile = 0; /* Start bot in make-userfile mode? */
85
86 char configfile[121] = "config.xml"; /* Name of the config file */
87 char helpdir[121] = "help/"; /* Directory of help files (if used) */
88 char textdir[121] = "text/"; /* Directory for text files that get dumped */
89 char pid_file[120]; /* Name of Eggdrop's pid file */
90
91 time_t online_since; /* Time the bot was started */
92 time_t now; /* Current time */
93 egg_timeval_t egg_timeval_now; /* Current time in seconds and microseconds. */
94
95 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
96
97 char version[81];
98
99 static int lastmin = 99;
100 static struct tm nowtm;
101
102 void core_party_init();
103 void core_config_init();
104
105 void fatal(const char *s, int recoverable)
106 {
107 putlog(LOG_MISC, "*", "Fatal: %s", s);
108 flushlogs();
109 unlink(pid_file);
110 if (!recoverable) {
111 bg_send_quit(BG_ABORT);
112 exit(1);
113 }
114 }
115
116 static void got_bus(int z)
117 {
118 fatal("BUS ERROR.", 1);
119 #ifdef SA_RESETHAND
120 kill(getpid(), SIGBUS);
121 #else
122 bg_send_quit(BG_ABORT);
123 exit(1);
124 #endif
125 }
126
127 static void got_segv(int z)
128 {
129 fatal("SEGMENT VIOLATION.", 1);
130 #ifdef SA_RESETHAND
131 kill(getpid(), SIGSEGV);
132 #else
133 bg_send_quit(BG_ABORT);
134 exit(1);
135 #endif
136 }
137
138 static void got_fpe(int z)
139 {
140 fatal("FLOATING POINT ERROR.", 0);
141 }
142
143 static void got_term(int z)
144 {
145 eggdrop_event("sigterm");
146 if (core_config.die_on_sigterm) {
147 putlog(LOG_MISC, "*", "Saving user file...");
148 user_save(core_config.userfile);
149 putlog(LOG_MISC, "*", "Saving config file...");
150 core_config_save();
151 putlog(LOG_MISC, "*", "Bot shutting down: received TERMINATE signal.");
152 flushlogs();
153 unlink(pid_file);
154 exit(0);
155 }
156 else putlog(LOG_MISC, "*", "Received TERMINATE signal (ignoring).");
157 }
158
159 static void got_quit(int z)
160 {
161 eggdrop_event("sigquit");
162 putlog(LOG_MISC, "*", "Received QUIT signal (ignoring).");
163 return;
164 }
165
166 static void got_hup(int z)
167 {
168 eggdrop_event("sighup");
169 putlog(LOG_MISC, "*", "Received HUP signal (ignoring).");
170 return;
171 }
172
173 static void got_ill(int z)
174 {
175 eggdrop_event("sigill");
176 putlog(LOG_MISC, "*", "Received ILL signal (ignoring).");
177 }
178
179
180 static void print_version(void)
181 {
182 printf("%s\n", version);
183 }
184
185 static void print_help(const char **argv)
186 {
187 print_version();
188 printf("\nUsage: %s [OPTIONS]... [FILE]\n", argv[0]);
189 printf(_("\n\
190 -h, --help Print help and exit\n\
191 -v, --version Print version and exit\n\
192 -n, --foreground Don't go into the background (default=off)\n\
193 -c --channel-stats (with -n) Display channel stats every 10 seconds\n\
194 -t --terminal (with -n) Use terminal to simulate dcc-chat\n\
195 -m --make-userfile Userfile creation mode\n\
196 FILE optional config filename (default 'config.xml')\n"));
197 printf("\n");
198 }
199
200 static void do_args(int argc, const char **argv)
201 {
202 int c;
203
204 optarg = 0;
205 optind = 1;
206 opterr = 1;
207 optopt = '?';
208
209 while (1) {
210 int option_index = 0;
211
212 static struct option long_options[] = {
213 {"help", 0, NULL, 'h'},
214 {"version", 0, NULL, 'v'},
215 {"load-module", 1, NULL, 'p'},
216 {"foreground", 0, NULL, 'n'},
217 {"channel-stats", 0, NULL, 'c'},
218 {"terminal", 0, NULL, 't'},
219 {"make-userfile", 0, NULL, 'm'},
220 {NULL, 0, NULL, 0}
221 };
222
223 c = getopt_long(argc, argv, "hvp:nctm", long_options, &option_index);
224 if (c == -1) break;
225 switch (c) {
226 case 'n':
227 backgrd = 0;
228 break;
229 case 'c':
230 con_chan = 1;
231 term_z = 0;
232 break;
233 case 't':
234 con_chan = 0;
235 term_z = 1;
236 break;
237 case 'm':
238 make_userfile = 1;
239 break;
240 case 'v':
241 print_version();
242 bg_send_quit(BG_ABORT);
243 exit(0);
244 break; /* this should never be reached */
245 case 'h':
246 print_help(argv);
247 bg_send_quit(BG_ABORT);
248 exit(0);
249 break; /* this should never be reached */
250 case 0: /* Long option with no short option */
251 case '?': /* Invalid option. */
252 /* getopt_long() already printed an error message. */
253 bg_send_quit(BG_ABORT);
254 exit(1);
255 default: /* bug: option not considered. */
256 fprintf(stderr, "%s: option unknown: %c\n", argv[0], c);
257 bg_send_quit(BG_ABORT);
258 exit(1);
259 break; /* this should never be reached */
260 }
261 }
262 if (optind < argc) strlcpy(configfile, argv[optind], sizeof configfile);
263 }
264
265 /* Called once a second.
266 */
267 static int core_secondly()
268 {
269 static int cnt = 0;
270 int miltime;
271
272 check_bind_secondly();
273 cnt++;
274 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
275 if (nowtm.tm_min != lastmin) {
276 int i = 0;
277
278 /* Once a minute */
279 lastmin = (lastmin + 1) % 60;
280 eggdrop_event("minutely");
281 check_bind_time(&nowtm);
282 /* In case for some reason more than 1 min has passed: */
283 while (nowtm.tm_min != lastmin) {
284 /* Timer drift, dammit */
285 putlog(LOG_DEBUG, "*", "timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
286 i++;
287 lastmin = (lastmin + 1) % 60;
288 eggdrop_event("minutely");
289 }
290 if (i > 1) putlog(LOG_MISC, "*", "Warning: timer drift (%d minutes).", i);
291
292 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
293 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 minutes */
294 eggdrop_event("5minutely");
295 if (!miltime) { /* At midnight */
296 char s[25];
297
298 strlcpy(s, ctime(&now), sizeof s);
299 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
300 eggdrop_event("backup");
301 eggdrop_event("daily");
302 }
303 }
304 }
305 return(0);
306 }
307
308
309 int file_check(const char *filename)
310 {
311 struct stat sbuf = {0};
312 int r;
313
314 r = stat(filename, &sbuf);
315 if (r) return(-1);
316 errno = 0;
317 if (sbuf.st_mode & (S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) return(-1);
318 return(0);
319 }
320
321 int main(int argc, char **argv)
322 {
323 int xx, i, timeout;
324 char s[25], *modname, *scriptname;
325 FILE *f;
326 struct sigaction sv;
327 egg_timeval_t howlong;
328 void *config_root, *entry;
329
330 #ifdef DEBUG
331 {
332 # include <sys/resource.h>
333 struct rlimit cdlim;
334
335 cdlim.rlim_cur = RLIM_INFINITY;
336 cdlim.rlim_max = RLIM_INFINITY;
337 setrlimit(RLIMIT_CORE, &cdlim);
338 }
339 #endif
340
341 #ifdef ENABLE_NLS
342 setlocale(LC_MESSAGES, "");
343 bindtextdomain(PACKAGE, LOCALEDIR);
344 textdomain(PACKAGE);
345 #endif
346
347 /* Initialize ltdl. */
348 LTDL_SET_PRELOADED_SYMBOLS();
349 if (lt_dlinit()) {
350 printf("Fatal error initializing ltdl: %s\n", lt_dlerror());
351 return(-1);
352 }
353
354 snprintf(version, sizeof version, "Eggdrop v%s (C) 1997 Robey Pointer (C) 2004 Eggheads Development Team", VERSION);
355
356 #ifdef STOP_UAC
357 {
358 int nvpair[2];
359
360 nvpair[0] = SSIN_UACPROC;
361 nvpair[1] = UAC_NOPRINT;
362 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
363 }
364 #endif
365
366 sv.sa_handler = got_bus;
367 sigemptyset(&sv.sa_mask);
368 #ifdef SA_RESETHAND
369 sv.sa_flags = SA_RESETHAND;
370 #else
371 sv.sa_flags = 0;
372 #endif
373 sigaction(SIGBUS, &sv, NULL);
374
375 sv.sa_handler = got_segv;
376 sigaction(SIGSEGV, &sv, NULL);
377 #ifdef SA_RESETHAND
378 sv.sa_flags = 0;
379 #endif
380
381 sv.sa_handler = got_fpe;
382 sigaction(SIGFPE, &sv, NULL);
383
384 sv.sa_handler = got_term;
385 sigaction(SIGTERM, &sv, NULL);
386
387 sv.sa_handler = got_hup;
388 sigaction(SIGHUP, &sv, NULL);
389
390 sv.sa_handler = got_quit;
391 sigaction(SIGQUIT, &sv, NULL);
392
393 sv.sa_handler = SIG_IGN;
394 sigaction(SIGPIPE, &sv, NULL);
395
396 sv.sa_handler = got_ill;
397 sigaction(SIGILL, &sv, NULL);
398
399 timer_update_now(&egg_timeval_now);
400 now = egg_timeval_now.sec;
401 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
402 lastmin = nowtm.tm_min;
403
404 srandom(now % (getpid() + getppid()));
405
406 do_args(argc, argv);
407 printf("\n%s\n", version);
408 printf("WARNING: Do NOT run this DEVELOPMENT version for any purpose other than testing.\n\n");
409
410 if (((int) getuid() == 0) || ((int) geteuid() == 0)) fatal(_("Eggdrop will not run as root!"), 0);
411
412 if (file_check(configfile)) {
413 if (errno) perror(configfile);
414 else fprintf(stderr, "ERROR\n\nCheck file permissions on your config file!\nMake sure other groups and users cannot read/write it.\n");
415 exit(-1);
416 }
417
418 egg = eggdrop_new();
419 eggdrop_init();
420 core_config_init(configfile);
421 logfile_init();
422 if (core_config.userfile) user_load(core_config.userfile);
423 core_party_init();
424 core_binds_init();
425
426 if (make_userfile) {
427 user_t *owner;
428 char handle[512], password[12];
429 int len;
430
431 if (user_count() != 0) {
432 printf("\n\n\nYou are trying to create a new userfile, but the old one still exists (%s)!\n\nPlease remove the userfile, or do not pass the -m option.\n\n", core_config.userfile);
433 exit(1);
434 }
435
436 printf("\n\n\nHello! I see you are creating a new userfile.\n\n");
437 printf("Let's create the owner account.\n\n");
438 do {
439 printf("Enter the owner handle: ");
440 fflush(stdout);
441 fgets(handle, sizeof(handle), stdin);
442 for (len = 0; handle[len]; len++) {
443 if (!ispunct(handle[len]) && !isalnum(handle[len])) break;
444 }
445 if (len == 0) printf("Come on, enter a real handle.\n\n");
446 } while (len <= 0);
447 handle[len] = 0;
448 owner = user_new(handle);
449 if (!owner) {
450 printf("Failed to create user record! Out of memory?\n\n");
451 exit(1);
452 }
453 user_rand_pass(password, sizeof(password));
454 user_set_pass(owner, password);
455 user_set_flag_str(owner, NULL, "+n");
456 printf("Your owner handle is '%s' and your password is '%s' (without the quotes).\n\n", handle, password);
457 memset(password, 0, sizeof(password));
458 str_redup(&core_config.owner, handle);
459 core_config_save();
460 user_save(core_config.userfile);
461 }
462
463 if (backgrd) bg_prepare_split();
464
465 strlcpy(s, ctime(&now), sizeof s);
466 strcpy(&s[11], &s[20]);
467 putlog(LOG_ALL, "*", "Loading Eggdrop %s (%s)", VERSION, s);
468 snprintf(pid_file, sizeof pid_file, "pid.%s", core_config.botname);
469
470 f = fopen(pid_file, "r");
471 if (f != NULL) {
472 fgets(s, 10, f);
473 xx = atoi(s);
474 kill(xx, SIGCHLD); /* Meaningless kill to determine if pid is used */
475 if (errno != ESRCH) {
476 printf(_("I detect %s already running from this directory.\n"), core_config.botname);
477 printf(_("If this is incorrect, please erase '%s'.\n"), pid_file);
478 bg_send_quit(BG_ABORT);
479 exit(1);
480 }
481 }
482
483 /* Put the module directory in the ltdl search path. */
484 if (core_config.module_path) module_add_dir(core_config.module_path);
485
486 /* Scan the autoload section of config. */
487 config_root = config_get_root("eggdrop");
488 for (i = 0; (entry = config_exists(config_root, "eggdrop", 0, "autoload", 0, "module", i, NULL)); i++) {
489 modname = NULL;
490 config_get_str(&modname, entry, NULL);
491 module_load(modname);
492 }
493 for (i = 0; (entry = config_exists(config_root, "eggdrop", 0, "autoload", 0, "script", i, NULL)); i++) {
494 scriptname = NULL;
495 config_get_str(&scriptname, entry, NULL);
496 script_load(scriptname);
497 }
498
499 if (backgrd) { /* Move into background? */
500 #ifndef CYGWIN_HACKS
501 bg_do_split();
502 }
503 else {
504 #endif
505 xx = getpid();
506 if (xx != 0) {
507 FILE *fp;
508
509 unlink(pid_file);
510 fp = fopen(pid_file, "w");
511 if (fp != NULL) {
512 fprintf(fp, "%u\n", xx);
513 if (fflush(fp)) {
514 /* Let the bot live since this doesn't appear to be a botchk */
515 printf("WARNING: Could not write pid file '%s'.\n", pid_file);
516 fclose(fp);
517 unlink(pid_file);
518 }
519 else fclose(fp);
520 }
521 else printf("WARNING: Could not write pid file '%s'.\n", pid_file);
522 #ifdef CYGWIN_HACKS
523 printf("Launched into the background (pid: %d)\n\n", xx);
524 #endif
525 }
526 }
527
528 use_stderr = 0; /* Stop writing to stderr now */
529
530 if (backgrd) {
531 /* Try to disassociate from controlling terminal (finger cross) */
532 #if HAVE_SETPGID && !defined(CYGWIN_HACKS)
533 setpgid(0, 0);
534 #endif
535 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
536 freopen("/dev/null", "r", stdin);
537 freopen("/dev/null", "w", stdout);
538 freopen("/dev/null", "w", stderr);
539 #ifdef CYGWIN_HACKS
540 FreeConsole();
541 #endif
542 }
543
544 online_since = now;
545 howlong.sec = 1;
546 howlong.usec = 0;
547 timer_create_repeater(&howlong, "main loop", core_secondly);
548
549 putlog(LOG_DEBUG, "*", "Entering main loop.");
550 while (1) {
551 timer_update_now(&egg_timeval_now);
552 now = egg_timeval_now.sec;
553 random(); /* Woop, lets really jumble things */
554 timer_run();
555 if (timer_get_shortest(&howlong)) timeout = 1000;
556 else timeout = howlong.sec * 1000 + howlong.usec / 1000;
557 sockbuf_update_all(timeout);
558 garbage_run();
559 }
560 }

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