/[cvs]/eggdrop1.8/src/main.c
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Contents of /eggdrop1.8/src/main.c

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Revision 1.6.2.2 - (show annotations) (download) (as text)
Wed Nov 17 13:58:37 2010 UTC (8 years, 10 months ago) by pseudo
Branch: gettext
Changes since 1.6.2.1: +2 -8 lines
File MIME type: text/x-chdr
Removed the old lang system.

1 /*
2 * main.c -- handles:
3 * core event handling
4 * signal handling
5 * command line arguments
6 * context and assert debugging
7 *
8 * $Id: main.c,v 1.6.2.1 2010/11/10 13:39:19 pseudo Exp $
9 */
10 /*
11 * Copyright (C) 1997 Robey Pointer
12 * Copyright (C) 1999 - 2010 Eggheads Development Team
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 */
28 /*
29 * The author (Robey Pointer) can be reached at: robey@netcom.com
30 * NOTE: Robey is no long working on this code, there is a discussion
31 * list available at eggheads@eggheads.org.
32 */
33
34 #include "main.h"
35
36 #include <fcntl.h>
37 #include <errno.h>
38 #include <signal.h>
39 #include <netdb.h>
40 #include <setjmp.h>
41
42 #ifdef TIME_WITH_SYS_TIME
43 # include <sys/time.h>
44 # include <time.h>
45 #else
46 # ifdef HAVE_SYS_TIME_H
47 # include <sys/time.h>
48 # else
49 # include <time.h>
50 # endif
51 #endif
52
53 #ifdef STOP_UAC /* OSF/1 complains a lot */
54 # include <sys/sysinfo.h>
55 # define UAC_NOPRINT 0x00000001 /* Don't report unaligned fixups */
56 #endif
57
58 #include "chan.h"
59 #include "modules.h"
60 #include "tandem.h"
61 #include "bg.h"
62
63 #ifdef DEBUG /* For debug compile */
64 # include <sys/resource.h> /* setrlimit() */
65 #endif
66
67 #ifdef CYGWIN_HACKS
68 # include <windows.h>
69 #endif
70
71 #ifndef _POSIX_SOURCE
72 # define _POSIX_SOURCE 1 /* Solaris needs this */
73 #endif
74
75 extern char origbotname[], userfile[], botnetnick[];
76 extern int dcc_total, conmask, cache_hit, cache_miss, max_logs, quick_logs,
77 quiet_save;
78 extern struct dcc_t *dcc;
79 extern struct userrec *userlist;
80 extern struct chanset_t *chanset;
81 extern log_t *logs;
82 extern Tcl_Interp *interp;
83 extern tcl_timer_t *timer, *utimer;
84 extern sigjmp_buf alarmret;
85 time_t now;
86 static int argc;
87 static char **argv;
88
89 /*
90 * Please use the PATCH macro instead of directly altering the version
91 * string from now on (it makes it much easier to maintain patches).
92 * Also please read the README file regarding your rights to distribute
93 * modified versions of this bot.
94 */
95
96 char egg_version[1024] = "1.8.0";
97 int egg_numver = 1080000;
98
99 char notify_new[121] = ""; /* Person to send a note to for new users */
100 int default_flags = 0; /* Default user flags */
101 int default_uflags = 0; /* Default user-definied flags */
102
103 int backgrd = 1; /* Run in the background? */
104 int con_chan = 0; /* Foreground: constantly display channel stats? */
105 int term_z = 0; /* Foreground: use the terminal as a partyline? */
106 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
107
108 char configfile[121] = "eggdrop.conf"; /* Default config file name */
109 char pid_file[120]; /* Name of the pid file */
110 char helpdir[121] = "help/"; /* Directory of help files */
111 char textdir[121] = "text/"; /* Directory for text files */
112
113 int keep_all_logs = 0; /* Never erase logfiles? */
114 char logfile_suffix[21] = ".%d%b%Y"; /* Format of logfile suffix */
115 int switch_logfiles_at = 300; /* When to switch logfiles */
116
117 time_t online_since; /* time that the bot was started */
118
119 int make_userfile = 0; /* Using bot in userfile-creation mode? */
120 char owner[121] = ""; /* Permanent owner(s) of the bot */
121
122 int save_users_at = 0; /* Minutes past the hour to save the userfile? */
123 int notify_users_at = 0; /* Minutes past the hour to notify users of notes? */
124
125 char version[81]; /* Version info (long form) */
126 char ver[41]; /* Version info (short form) */
127 char egg_xtra[2048]; /* Patch info */
128
129 int do_restart = 0; /* .restart has been called, restart ASAP */
130 int resolve_timeout = 15; /* Hostname/address lookup timeout */
131 char quit_msg[1024]; /* Quit message */
132
133 /* Traffic stats */
134 unsigned long otraffic_irc = 0;
135 unsigned long otraffic_irc_today = 0;
136 unsigned long otraffic_bn = 0;
137 unsigned long otraffic_bn_today = 0;
138 unsigned long otraffic_dcc = 0;
139 unsigned long otraffic_dcc_today = 0;
140 unsigned long otraffic_filesys = 0;
141 unsigned long otraffic_filesys_today = 0;
142 unsigned long otraffic_trans = 0;
143 unsigned long otraffic_trans_today = 0;
144 unsigned long otraffic_unknown = 0;
145 unsigned long otraffic_unknown_today = 0;
146 unsigned long itraffic_irc = 0;
147 unsigned long itraffic_irc_today = 0;
148 unsigned long itraffic_bn = 0;
149 unsigned long itraffic_bn_today = 0;
150 unsigned long itraffic_dcc = 0;
151 unsigned long itraffic_dcc_today = 0;
152 unsigned long itraffic_trans = 0;
153 unsigned long itraffic_trans_today = 0;
154 unsigned long itraffic_unknown = 0;
155 unsigned long itraffic_unknown_today = 0;
156
157 #ifdef DEBUG_CONTEXT
158 /* Context storage for fatal crashes */
159 char cx_file[16][30];
160 char cx_note[16][256];
161 int cx_line[16];
162 int cx_ptr = 0;
163 #endif
164
165 #ifdef TLS
166 int ssl_cleanup();
167 #endif
168
169 void fatal(const char *s, int recoverable)
170 {
171 int i;
172
173 putlog(LOG_MISC, "*", "* %s", s);
174 flushlogs();
175 for (i = 0; i < dcc_total; i++)
176 if (dcc[i].sock >= 0)
177 killsock(dcc[i].sock);
178 #ifdef TLS
179 ssl_cleanup();
180 #endif
181 unlink(pid_file);
182 if (recoverable != 1) {
183 bg_send_quit(BG_ABORT);
184 exit(!recoverable);
185 }
186 }
187
188 int expmem_chanprog();
189 int expmem_users();
190 int expmem_misc();
191 int expmem_dccutil();
192 int expmem_botnet();
193 int expmem_tcl();
194 int expmem_tclhash();
195 int expmem_net();
196 int expmem_modules(int);
197 int expmem_tcldcc();
198 int expmem_tclmisc();
199 int expmem_dns();
200 #ifdef TLS
201 int expmem_tls();
202 #endif
203
204 /* For mem.c : calculate memory we SHOULD be using
205 */
206 int expected_memory(void)
207 {
208 int tot;
209
210 tot = expmem_chanprog() + expmem_users() + expmem_misc() + expmem_dccutil() +
211 expmem_botnet() + expmem_tcl() + expmem_tclhash() + expmem_net() +
212 expmem_modules(0) + expmem_tcldcc() + expmem_tclmisc() + expmem_dns();
213 #ifdef TLS
214 tot += expmem_tls();
215 #endif
216 return tot;
217 }
218
219 static void check_expired_dcc()
220 {
221 int i;
222
223 for (i = 0; i < dcc_total; i++)
224 if (dcc[i].type && dcc[i].type->timeout_val &&
225 ((now - dcc[i].timeval) > *(dcc[i].type->timeout_val))) {
226 if (dcc[i].type->timeout)
227 dcc[i].type->timeout(i);
228 else if (dcc[i].type->eof)
229 dcc[i].type->eof(i);
230 else
231 continue;
232 /* Only timeout 1 socket per cycle, too risky for more */
233 return;
234 }
235 }
236
237 #ifndef DEBUG_CONTEXT
238 #define write_debug() do {} while (0)
239 #else
240 static int nested_debug = 0;
241
242 static void write_debug()
243 {
244 int x;
245 char s[25];
246 int y;
247
248 if (nested_debug) {
249 /* Yoicks, if we have this there's serious trouble!
250 * All of these are pretty reliable, so we'll try these.
251 *
252 * NOTE: dont try and display context-notes in here, it's
253 * _not_ safe <cybah>
254 */
255 x = creat("DEBUG.DEBUG", 0644);
256 setsock(x, SOCK_NONSOCK);
257 if (x >= 0) {
258 strncpyz(s, ctime(&now), sizeof s);
259 dprintf(-x, "Debug (%s) written %s\n", ver, s);
260 dprintf(-x, "Please report problem to bugs@eggheads.org\n");
261 dprintf(-x, "after a visit to http://www.eggheads.org/bugzilla/\n");
262 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
263 dprintf(-x, "Context: ");
264 cx_ptr = cx_ptr & 15;
265 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
266 dprintf(-x, "%s/%d,\n ", cx_file[y], cx_line[y]);
267 dprintf(-x, "%s/%d\n\n", cx_file[y], cx_line[y]);
268 killsock(x);
269 close(x);
270 }
271 bg_send_quit(BG_ABORT);
272 exit(1); /* Dont even try & tell people about, that may
273 * have caused the fault last time. */
274 } else
275 nested_debug = 1;
276 putlog(LOG_MISC, "*", "* Last context: %s/%d [%s]", cx_file[cx_ptr],
277 cx_line[cx_ptr], cx_note[cx_ptr][0] ? cx_note[cx_ptr] : "");
278 putlog(LOG_MISC, "*", "* Please REPORT this BUG!");
279 putlog(LOG_MISC, "*", "* Check doc/BUG-REPORT on how to do so.");
280 x = creat("DEBUG", 0644);
281 setsock(x, SOCK_NONSOCK);
282 if (x < 0) {
283 putlog(LOG_MISC, "*", _("* Failed to write DEBUG"));
284 } else {
285 strncpyz(s, ctime(&now), sizeof s);
286 dprintf(-x, "Debug (%s) written %s\n", ver, s);
287 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
288 #ifdef STATIC
289 dprintf(-x, "STATICALLY LINKED\n");
290 #endif
291
292 /* info library */
293 dprintf(-x, "Tcl library: %s\n",
294 ((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
295 tcl_resultstring() : "*unknown*");
296
297 /* info tclversion/patchlevel */
298 dprintf(-x, "Tcl version: %s (header version %s)\n",
299 ((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
300 tcl_resultstring() : (Tcl_Eval(interp, "info tclversion") == TCL_OK) ?
301 tcl_resultstring() : "*unknown*", TCL_PATCH_LEVEL ? TCL_PATCH_LEVEL :
302 "*unknown*");
303
304 if (tcl_threaded())
305 dprintf(-x, "Tcl is threaded\n");
306 #ifdef IPV6
307 dprintf(-x, "Compiled with IPv6 support\n");
308 #else
309 dprintf(-x, "Compiled without IPv6 support\n");
310 #endif
311
312 #ifdef TLS
313 dprintf(-x, "Compiled with TLS support\n");
314 #else
315 dprintf(-x, "Compiled without TLS support\n");
316 #endif
317
318 dprintf(-x, "Configure flags: %s\n", EGG_AC_ARGS);
319 #ifdef CCFLAGS
320 dprintf(-x, "Compile flags: %s\n", CCFLAGS);
321 #endif
322
323 #ifdef LDFLAGS
324 dprintf(-x, "Link flags: %s\n", LDFLAGS);
325 #endif
326
327 #ifdef STRIPFLAGS
328 dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
329 #endif
330
331 dprintf(-x, "Context: ");
332 cx_ptr = cx_ptr & 15;
333 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
334 dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
335 (cx_note[y][0]) ? cx_note[y] : "");
336 dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
337 (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
338 tell_dcc(-x);
339 dprintf(-x, "\n");
340 debug_mem_to_dcc(-x);
341 killsock(x);
342 close(x);
343 putlog(LOG_MISC, "*", "* Wrote DEBUG");
344 }
345 }
346 #endif /* DEBUG_CONTEXT */
347
348 static void got_bus(int z)
349 {
350 write_debug();
351 fatal("BUS ERROR -- CRASHING!", 1);
352 #ifdef SA_RESETHAND
353 kill(getpid(), SIGBUS);
354 #else
355 bg_send_quit(BG_ABORT);
356 exit(1);
357 #endif
358 }
359
360 static void got_segv(int z)
361 {
362 write_debug();
363 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
364 #ifdef SA_RESETHAND
365 kill(getpid(), SIGSEGV);
366 #else
367 bg_send_quit(BG_ABORT);
368 exit(1);
369 #endif
370 }
371
372 static void got_fpe(int z)
373 {
374 write_debug();
375 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
376 }
377
378 static void got_term(int z)
379 {
380 /* Now we die by default on sigterm, but scripts have the chance to
381 * catch the event themselves and cancel shutdown by returning 1
382 */
383 if (check_tcl_event("sigterm"))
384 return;
385 kill_bot(_("ACK, I've been terminated!"),
386 _("TERMINATE SIGNAL -- SIGNING OFF"));
387 }
388
389 static void got_quit(int z)
390 {
391 if (check_tcl_event("sigquit"))
392 return;
393 putlog(LOG_MISC, "*", _("Received QUIT signal: restarting..."));
394 do_restart = -1;
395 return;
396 }
397
398 static void got_hup(int z)
399 {
400 write_userfile(-1);
401 if (check_tcl_event("sighup"))
402 return;
403 putlog(LOG_MISC, "*", _("Received HUP signal: rehashing..."));
404 do_restart = -2;
405 return;
406 }
407
408 /* A call to resolver (gethostbyname, etc) timed out
409 */
410 static void got_alarm(int z)
411 {
412 siglongjmp(alarmret, 1);
413
414 /* -Never reached- */
415 }
416
417 /* Got ILL signal -- log context and continue
418 */
419 static void got_ill(int z)
420 {
421 check_tcl_event("sigill");
422 #ifdef DEBUG_CONTEXT
423 putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
424 cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
425 #endif
426 }
427
428 #ifdef DEBUG_CONTEXT
429 /* Called from the Context macro.
430 */
431 void eggContext(const char *file, int line, const char *module)
432 {
433 char x[31], *p;
434
435 p = strrchr(file, '/');
436 if (!module) {
437 strncpyz(x, p ? p + 1 : file, sizeof x);
438 } else
439 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
440 cx_ptr = ((cx_ptr + 1) & 15);
441 strcpy(cx_file[cx_ptr], x);
442 cx_line[cx_ptr] = line;
443 cx_note[cx_ptr][0] = 0;
444 }
445
446 /* Called from the ContextNote macro.
447 */
448 void eggContextNote(const char *file, int line, const char *module,
449 const char *note)
450 {
451 char x[31], *p;
452
453 p = strrchr(file, '/');
454 if (!module)
455 strncpyz(x, p ? p + 1 : file, sizeof x);
456 else
457 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
458 cx_ptr = ((cx_ptr + 1) & 15);
459 strcpy(cx_file[cx_ptr], x);
460 cx_line[cx_ptr] = line;
461 strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
462 }
463 #endif /* DEBUG_CONTEXT */
464
465 #ifdef DEBUG_ASSERT
466 /* Called from the Assert macro.
467 */
468 void eggAssert(const char *file, int line, const char *module)
469 {
470 write_debug();
471 if (!module)
472 putlog(LOG_MISC, "*", "* In file %s, line %u", file, line);
473 else
474 putlog(LOG_MISC, "*", "* In file %s:%s, line %u", module, file, line);
475 fatal("ASSERT FAILED -- CRASHING!", 1);
476 }
477 #endif
478
479 static void do_arg(char *s)
480 {
481 char x[512], *z = x;
482 int i;
483
484 if (s[0] == '-')
485 for (i = 1; i < strlen(s); i++) {
486 switch (s[i]) {
487 case 'n':
488 backgrd = 0;
489 break;
490 case 'c':
491 con_chan = 1;
492 term_z = 0;
493 break;
494 case 't':
495 con_chan = 0;
496 term_z = 1;
497 break;
498 case 'm':
499 make_userfile = 1;
500 break;
501 case 'v':
502 strncpyz(x, egg_version, sizeof x);
503 newsplit(&z);
504 newsplit(&z);
505 printf("%s\n", version);
506 if (z[0])
507 printf(_(" (patches: %s)\n"), z);
508 printf(_("Configured with: %s\n"), EGG_AC_ARGS);
509 printf(_("Compiled with: "));
510 #ifdef IPV6
511 printf("IPv6, ");
512 #endif
513 #ifdef TLS
514 printf("TLS, ");
515 #endif
516 printf("%s=%d\n", _("handlen"), HANDLEN);
517 bg_send_quit(BG_ABORT);
518 exit(0);
519 break; /* this should never be reached */
520 case 'h':
521 printf("\n%s\n\n", version);
522 printf(_("Usage: eggdrop [options] [config-file]\n\n"
523 "Options:\n"
524 " -h help\n"
525 " -n Don't background; send all log entries to console.\n"
526 " -nc Don't background; display channel stats every 10 seconds.\n"
527 " -nt Don't background; use terminal to simulate DCC chat.\n"
528 " -m Create userfile.\n"
529 " -h Show this help.\n"
530 " -v Show version info, then quit.\n\n"));
531 printf("\n");
532 bg_send_quit(BG_ABORT);
533 exit(0);
534 break; /* this should never be reached */
535 }
536 } else
537 strncpyz(configfile, s, sizeof configfile);
538 }
539
540 void backup_userfile(void)
541 {
542 char s[125];
543
544 if (quiet_save < 2)
545 putlog(LOG_MISC, "*", _("Backing up user file..."));
546 egg_snprintf(s, sizeof s, "%s~bak", userfile);
547 copyfile(userfile, s);
548 }
549
550 /* Timer info */
551 static int lastmin = 99;
552 static time_t then;
553 static struct tm nowtm;
554
555 /* Called once a second.
556 *
557 * Note: Try to not put any Context lines in here (guppy 21Mar2000).
558 */
559 static void core_secondly()
560 {
561 static int cnt = 0;
562 int miltime;
563
564 do_check_timers(&utimer); /* Secondly timers */
565 cnt++;
566 if (cnt >= 10) { /* Every 10 seconds */
567 cnt = 0;
568 check_expired_dcc();
569 if (con_chan && !backgrd) {
570 dprintf(DP_STDOUT, "\033[2J\033[1;1H");
571 tell_verbose_status(DP_STDOUT);
572 do_module_report(DP_STDOUT, 0, "server");
573 do_module_report(DP_STDOUT, 0, "channels");
574 tell_mem_status_dcc(DP_STDOUT);
575 }
576 }
577 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
578 if (nowtm.tm_min != lastmin) {
579 int i = 0;
580
581 /* Once a minute */
582 lastmin = (lastmin + 1) % 60;
583 call_hook(HOOK_MINUTELY);
584 check_expired_ignores();
585 autolink_cycle(NULL); /* Attempt autolinks */
586 /* In case for some reason more than 1 min has passed: */
587 while (nowtm.tm_min != lastmin) {
588 /* Timer drift, dammit */
589 debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
590 i++;
591 lastmin = (lastmin + 1) % 60;
592 call_hook(HOOK_MINUTELY);
593 }
594 if (i > 1)
595 putlog(LOG_MISC, "*", _("(!) timer drift -- spun %d minutes"), i);
596 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
597 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
598 call_hook(HOOK_5MINUTELY);
599 check_botnet_pings();
600 if (!quick_logs) {
601 flushlogs();
602 check_logsize();
603 }
604 if (!miltime) { /* At midnight */
605 char s[25];
606 int j;
607
608 strncpyz(s, ctime(&now), sizeof s);
609 if (quiet_save < 3)
610 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
611 call_hook(HOOK_BACKUP);
612 for (j = 0; j < max_logs; j++) {
613 if (logs[j].filename != NULL && logs[j].f != NULL) {
614 fclose(logs[j].f);
615 logs[j].f = NULL;
616 }
617 }
618 }
619 }
620 if (nowtm.tm_min == notify_users_at)
621 call_hook(HOOK_HOURLY);
622 /* These no longer need checking since they are all check vs minutely
623 * settings and we only get this far on the minute.
624 */
625 if (miltime == switch_logfiles_at) {
626 call_hook(HOOK_DAILY);
627 if (!keep_all_logs) {
628 if (quiet_save < 3)
629 putlog(LOG_MISC, "*", _("Switching logfiles..."));
630 for (i = 0; i < max_logs; i++)
631 if (logs[i].filename) {
632 char s[1024];
633
634 if (logs[i].f) {
635 fclose(logs[i].f);
636 logs[i].f = NULL;
637 }
638 egg_snprintf(s, sizeof s, "%s.yesterday", logs[i].filename);
639 unlink(s);
640 movefile(logs[i].filename, s);
641 }
642 }
643 }
644 }
645 }
646
647 static void core_minutely()
648 {
649 check_tcl_time(&nowtm);
650 check_tcl_cron(&nowtm);
651 do_check_timers(&timer);
652 if (quick_logs != 0) {
653 flushlogs();
654 check_logsize();
655 }
656 }
657
658 static void core_hourly()
659 {
660 write_userfile(-1);
661 }
662
663 static void event_rehash()
664 {
665 check_tcl_event("rehash");
666 }
667
668 static void event_prerehash()
669 {
670 check_tcl_event("prerehash");
671 }
672
673 static void event_save()
674 {
675 check_tcl_event("save");
676 }
677
678 static void event_logfile()
679 {
680 check_tcl_event("logfile");
681 }
682
683 static void event_resettraffic()
684 {
685 otraffic_irc += otraffic_irc_today;
686 itraffic_irc += itraffic_irc_today;
687 otraffic_bn += otraffic_bn_today;
688 itraffic_bn += itraffic_bn_today;
689 otraffic_dcc += otraffic_dcc_today;
690 itraffic_dcc += itraffic_dcc_today;
691 otraffic_unknown += otraffic_unknown_today;
692 itraffic_unknown += itraffic_unknown_today;
693 otraffic_trans += otraffic_trans_today;
694 itraffic_trans += itraffic_trans_today;
695 otraffic_irc_today = otraffic_bn_today = 0;
696 otraffic_dcc_today = otraffic_unknown_today = 0;
697 itraffic_irc_today = itraffic_bn_today = 0;
698 itraffic_dcc_today = itraffic_unknown_today = 0;
699 itraffic_trans_today = otraffic_trans_today = 0;
700 }
701
702 static void event_loaded()
703 {
704 check_tcl_event("loaded");
705 }
706
707 void kill_tcl();
708 extern module_entry *module_list;
709 void restart_chons();
710
711 #ifdef STATIC
712 void check_static(char *, char *(*)());
713
714 #include "mod/static.h"
715 #endif
716 int init_threaddata(int);
717 int init_mem();
718 int init_userent();
719 int init_misc();
720 int init_bots();
721 int init_modules();
722 int init_tcl(int, char **);
723 #ifdef TLS
724 int ssl_init();
725 #endif
726
727 static void patch(const char *str)
728 {
729 char *p = strchr(egg_version, '+');
730
731 if (!p)
732 p = &egg_version[strlen(egg_version)];
733 sprintf(p, "+%s", str);
734 egg_numver++;
735 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
736 }
737
738 static inline void garbage_collect(void)
739 {
740 static u_8bit_t run_cnt = 0;
741
742 if (run_cnt == 3)
743 garbage_collect_tclhash();
744 else
745 run_cnt++;
746 }
747
748 int mainloop(int toplevel)
749 {
750 static int socket_cleanup = 0;
751 int xx, i, eggbusy = 1, tclbusy = 0;
752 char buf[520];
753
754 /* Lets move some of this here, reducing the numer of actual
755 * calls to periodic_timers
756 */
757 now = time(NULL);
758 /*
759 * FIXME: Get rid of this, it's ugly and wastes lots of cpu.
760 *
761 * pre-1.3.0 Eggdrop had random() in the once a second block below.
762 *
763 * This attempts to keep random() more random by constantly
764 * calling random() and updating the state information.
765 */
766 random(); /* Woop, lets really jumble things */
767
768 /* If we want to restart, we have to unwind to the toplevel.
769 * Tcl will Panic if we kill the interp with Tcl_Eval in progress.
770 * This is done by returning -1 in tickle_WaitForEvent.
771 */
772 if (do_restart && do_restart != -2 && !toplevel)
773 return -1;
774
775 /* Once a second */
776 if (now != then) {
777 call_hook(HOOK_SECONDLY);
778 then = now;
779 }
780
781 /* Only do this every so often. */
782 if (!socket_cleanup) {
783 socket_cleanup = 5;
784
785 /* Remove dead dcc entries. */
786 dcc_remove_lost();
787
788 /* Check for server or dcc activity. */
789 dequeue_sockets();
790 } else
791 socket_cleanup--;
792
793 /* Free unused structures. */
794 garbage_collect();
795
796 xx = sockgets(buf, &i);
797 if (xx >= 0) { /* Non-error */
798 int idx;
799
800 for (idx = 0; idx < dcc_total; idx++)
801 if (dcc[idx].sock == xx) {
802 if (dcc[idx].type && dcc[idx].type->activity) {
803 /* Traffic stats */
804 if (dcc[idx].type->name) {
805 if (!strncmp(dcc[idx].type->name, "BOT", 3))
806 itraffic_bn_today += strlen(buf) + 1;
807 else if (!strcmp(dcc[idx].type->name, "SERVER"))
808 itraffic_irc_today += strlen(buf) + 1;
809 else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
810 itraffic_dcc_today += strlen(buf) + 1;
811 else if (!strncmp(dcc[idx].type->name, "FILES", 5))
812 itraffic_dcc_today += strlen(buf) + 1;
813 else if (!strcmp(dcc[idx].type->name, "SEND"))
814 itraffic_trans_today += strlen(buf) + 1;
815 else if (!strncmp(dcc[idx].type->name, "GET", 3))
816 itraffic_trans_today += strlen(buf) + 1;
817 else
818 itraffic_unknown_today += strlen(buf) + 1;
819 }
820 dcc[idx].type->activity(idx, buf, i);
821 } else
822 putlog(LOG_MISC, "*",
823 _("!!! untrapped dcc activity: type %s, sock %d"),
824 dcc[idx].type->name, dcc[idx].sock);
825 break;
826 }
827 } else if (xx == -1) { /* EOF from someone */
828 int idx;
829
830 if (i == STDOUT && !backgrd)
831 fatal(_("END OF FILE ON TERMINAL"), 0);
832 for (idx = 0; idx < dcc_total; idx++)
833 if (dcc[idx].sock == i) {
834 if (dcc[idx].type && dcc[idx].type->eof)
835 dcc[idx].type->eof(idx);
836 else {
837 if (dcc[idx].type)
838 putlog(LOG_MISC, "*", _("*** ATTENTION: DEAD SOCKET (%d) "
839 "OF TYPE %s UNTRAPPED"), i, dcc[idx].type->name);
840 else
841 putlog(LOG_MISC, "*", _("*** ATTENTION: DEAD SOCKET (%d) "
842 "OF UNKNOWN TYPE UNTRAPPED"), i);
843 killsock(i);
844 lostdcc(idx);
845 }
846 idx = dcc_total + 1;
847 }
848 if (idx == dcc_total) {
849 putlog(LOG_MISC, "*",
850 _("(@) EOF socket %d, not a dcc socket, not anything."), i);
851 close(i);
852 killsock(i);
853 }
854 } else if (xx == -2 && errno != EINTR) { /* select() error */
855 putlog(LOG_MISC, "*", _("* Socket error #%d; recovering."), errno);
856 for (i = 0; i < dcc_total; i++) {
857 if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno == EBADF)) {
858 putlog(LOG_MISC, "*",
859 _("DCC socket %d (type %d, name '%s') expired -- pfft"),
860 dcc[i].sock, dcc[i].type, dcc[i].nick);
861 killsock(dcc[i].sock);
862 lostdcc(i);
863 i--;
864 }
865 }
866 } else if (xx == -3) {
867 call_hook(HOOK_IDLE);
868 socket_cleanup = 0; /* If we've been idle, cleanup & flush */
869 eggbusy = 0;
870 } else if (xx == -5) {
871 eggbusy = 0;
872 tclbusy = 1;
873 }
874
875 if (do_restart) {
876 if (do_restart == -2)
877 rehash();
878 else if (!toplevel)
879 return -1; /* Unwind to toplevel before restarting */
880 else {
881 /* Unload as many modules as possible */
882 int f = 1;
883 module_entry *p;
884 Function startfunc;
885 char name[256];
886
887 /* oops, I guess we should call this event before tcl is restarted */
888 check_tcl_event("prerestart");
889
890 while (f) {
891 f = 0;
892 for (p = module_list; p != NULL; p = p->next) {
893 dependancy *d = dependancy_list;
894 int ok = 1;
895
896 while (ok && d) {
897 if (d->needed == p)
898 ok = 0;
899 d = d->next;
900 }
901 if (ok) {
902 strcpy(name, p->name);
903 if (module_unload(name, botnetnick) == NULL) {
904 f = 1;
905 break;
906 }
907 }
908 }
909 }
910
911 /* Make sure we don't have any modules left hanging around other than
912 * "eggdrop" and the two that are supposed to be.
913 */
914 for (f = 0, p = module_list; p; p = p->next) {
915 if (strcmp(p->name, "eggdrop") && strcmp(p->name, "encryption") &&
916 strcmp(p->name, "uptime")) {
917 f++;
918 }
919 }
920 if (f != 0) {
921 putlog(LOG_MISC, "*", _("Stagnant modules; "
922 "there WILL be memory leaks!"));
923 }
924
925 flushlogs();
926 kill_tcl();
927 init_tcl(argc, argv);
928
929 /* this resets our modules which we didn't unload (encryption and uptime) */
930 for (p = module_list; p; p = p->next) {
931 if (p->funcs) {
932 startfunc = p->funcs[MODCALL_START];
933 startfunc(NULL);
934 }
935 }
936
937 rehash();
938 #ifdef TLS
939 ssl_cleanup();
940 ssl_init();
941 #endif
942 restart_chons();
943 call_hook(HOOK_LOADED);
944 }
945 eggbusy = 1;
946 do_restart = 0;
947 }
948
949 #ifdef USE_TCL_EVENTS
950 if (!eggbusy) {
951 /* Process all pending tcl events */
952 # ifdef REPLACE_NOTIFIER
953 if (Tcl_ServiceAll())
954 tclbusy = 1;
955 # else
956 while (Tcl_DoOneEvent(TCL_DONT_WAIT | TCL_ALL_EVENTS))
957 tclbusy = 1;
958 # endif /* REPLACE_NOTIFIER */
959 #endif /* USE_TCL_EVENTS */
960 }
961
962 return (eggbusy || tclbusy);
963 }
964
965 int main(int arg_c, char **arg_v)
966 {
967 int i, xx;
968 char s[25];
969 FILE *f;
970 struct sigaction sv;
971 struct chanset_t *chan;
972 #ifdef DEBUG
973 struct rlimit cdlim;
974 #endif
975 #ifdef STOP_UAC
976 int nvpair[2];
977 #endif
978
979 /* Make sure it can write core, if you make debug. Else it's pretty
980 * useless (dw)
981 *
982 * Only allow unlimited size core files when compiled with DEBUG defined.
983 * This is not a good idea for normal builds -- in these cases, use the
984 * default system resource limits instead.
985 */
986 #ifdef DEBUG
987 cdlim.rlim_cur = RLIM_INFINITY;
988 cdlim.rlim_max = RLIM_INFINITY;
989 setrlimit(RLIMIT_CORE, &cdlim);
990 #endif
991
992 #ifdef DEBUG_CONTEXT
993 /* Initialise context list */
994 for (i = 0; i < 16; i++)
995 Context;
996 #endif
997
998 /* Include patch.h header for patch("...") */
999 #include "patch.h"
1000
1001 argc = arg_c;
1002 argv = arg_v;
1003
1004 /* Version info! */
1005 egg_snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
1006 egg_snprintf(version, sizeof version,
1007 "Eggdrop v%s (C) 1997 Robey Pointer (C) 2010 Eggheads",
1008 egg_version);
1009 /* Now add on the patchlevel (for Tcl) */
1010 sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
1011 strcat(egg_version, egg_xtra);
1012
1013 /* For OSF/1 */
1014 #ifdef STOP_UAC
1015 /* Don't print "unaligned access fixup" warning to the user */
1016 nvpair[0] = SSIN_UACPROC;
1017 nvpair[1] = UAC_NOPRINT;
1018 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
1019 #endif
1020
1021 /* Set up error traps: */
1022 sv.sa_handler = got_bus;
1023 sigemptyset(&sv.sa_mask);
1024 #ifdef SA_RESETHAND
1025 sv.sa_flags = SA_RESETHAND;
1026 #else
1027 sv.sa_flags = 0;
1028 #endif
1029 sigaction(SIGBUS, &sv, NULL);
1030 sv.sa_handler = got_segv;
1031 sigaction(SIGSEGV, &sv, NULL);
1032 #ifdef SA_RESETHAND
1033 sv.sa_flags = 0;
1034 #endif
1035 sv.sa_handler = got_fpe;
1036 sigaction(SIGFPE, &sv, NULL);
1037 sv.sa_handler = got_term;
1038 sigaction(SIGTERM, &sv, NULL);
1039 sv.sa_handler = got_hup;
1040 sigaction(SIGHUP, &sv, NULL);
1041 sv.sa_handler = got_quit;
1042 sigaction(SIGQUIT, &sv, NULL);
1043 sv.sa_handler = SIG_IGN;
1044 sigaction(SIGPIPE, &sv, NULL);
1045 sv.sa_handler = got_ill;
1046 sigaction(SIGILL, &sv, NULL);
1047 sv.sa_handler = got_alarm;
1048 sigaction(SIGALRM, &sv, NULL);
1049
1050 /* Initialize variables and stuff */
1051 now = time(NULL);
1052 chanset = NULL;
1053 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
1054 lastmin = nowtm.tm_min;
1055 srandom((unsigned int) (now % (getpid() + getppid())));
1056 init_mem();
1057 if (argc > 1)
1058 for (i = 1; i < argc; i++)
1059 do_arg(argv[i]);
1060
1061 printf("\n%s\n", version);
1062
1063 #ifndef CYGWIN_HACKS
1064 /* Don't allow eggdrop to run as root
1065 * This check isn't useful under cygwin and has been
1066 * reported to cause trouble in some situations.
1067 */
1068 if (((int) getuid() == 0) || ((int) geteuid() == 0))
1069 fatal(_("ERROR: Eggdrop will not run as root!"), 0);
1070 #endif
1071
1072 #ifndef REPLACE_NOTIFIER
1073 init_threaddata(1);
1074 #endif
1075 init_userent();
1076 init_misc();
1077 init_bots();
1078 init_modules();
1079 if (backgrd)
1080 bg_prepare_split();
1081 init_tcl(argc, argv);
1082 #ifdef STATIC
1083 link_statics();
1084 #endif
1085 strncpyz(s, ctime(&now), sizeof s);
1086 strcpy(&s[11], &s[20]);
1087 putlog(LOG_ALL, "*", _("--- Loading %s (%s)"), ver, s);
1088 chanprog();
1089 if (!encrypt_pass) {
1090 printf(_("You have installed modules but have not selected an encryption\n"
1091 "module. Please consult the default config file for info.\n"));
1092 bg_send_quit(BG_ABORT);
1093 exit(1);
1094 }
1095 i = 0;
1096 for (chan = chanset; chan; chan = chan->next)
1097 i++;
1098 putlog(LOG_MISC, "*", _("=== %s: %d channels, %d users."),
1099 botnetnick, i, count_users(userlist));
1100 #ifdef TLS
1101 ssl_init();
1102 #endif
1103 cache_miss = 0;
1104 cache_hit = 0;
1105 if (!pid_file[0])
1106 egg_snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
1107
1108 /* Check for pre-existing eggdrop! */
1109 f = fopen(pid_file, "r");
1110 if (f != NULL) {
1111 fgets(s, 10, f);
1112 xx = atoi(s);
1113 i = kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
1114 * is used */
1115 if (i == 0 || errno != ESRCH) {
1116 printf(_("I detect %s already running from this directory.\n"),
1117 botnetnick);
1118 printf(_("If this is incorrect, erase the '%s'\n"), pid_file);
1119 bg_send_quit(BG_ABORT);
1120 exit(1);
1121 }
1122 }
1123
1124 /* Move into background? */
1125 if (backgrd) {
1126 bg_do_split();
1127 } else { /* !backgrd */
1128 xx = getpid();
1129 if (xx != 0) {
1130 FILE *fp;
1131
1132 /* Write pid to file */
1133 unlink(pid_file);
1134 fp = fopen(pid_file, "w");
1135 if (fp != NULL) {
1136 fprintf(fp, "%u\n", xx);
1137 if (fflush(fp)) {
1138 /* Let the bot live since this doesn't appear to be a botchk */
1139 printf(_("* Warning! Could not write %s file!\n"), pid_file);
1140 fclose(fp);
1141 unlink(pid_file);
1142 } else
1143 fclose(fp);
1144 } else
1145 printf(_("* Warning! Could not write %s file!\n"), pid_file);
1146 }
1147 }
1148
1149 use_stderr = 0; /* Stop writing to stderr now */
1150 if (backgrd) {
1151 /* Ok, try to disassociate from controlling terminal (finger cross) */
1152 #ifdef HAVE_SETPGID
1153 setpgid(0, 0);
1154 #endif
1155 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
1156 freopen("/dev/null", "r", stdin);
1157 freopen("/dev/null", "w", stdout);
1158 freopen("/dev/null", "w", stderr);
1159 #ifdef CYGWIN_HACKS
1160 FreeConsole();
1161 #endif
1162 }
1163
1164 /* Terminal emulating dcc chat */
1165 if (!backgrd && term_z) {
1166 int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
1167
1168 getvhost(&dcc[n].sockname, AF_INET);
1169 dcc[n].sock = STDOUT;
1170 dcc[n].timeval = now;
1171 dcc[n].u.chat->con_flags = conmask;
1172 dcc[n].u.chat->strip_flags = STRIP_ALL;
1173 dcc[n].status = STAT_ECHO;
1174 strcpy(dcc[n].nick, "HQ");
1175 strcpy(dcc[n].host, "llama@console");
1176 /* HACK: Workaround not to pass literal "HQ" as a non-const arg */
1177 dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
1178 /* Make sure there's an innocuous HQ user if needed */
1179 if (!dcc[n].user) {
1180 userlist = adduser(userlist, dcc[n].nick, "none", "-", USER_PARTY);
1181 dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
1182 }
1183 setsock(STDOUT, 0); /* Entry in net table */
1184 dprintf(n, _("\n### ENTERING DCC CHAT SIMULATION ###\n\n"));
1185 dcc_chatter(n);
1186 }
1187
1188 then = now;
1189 online_since = now;
1190 autolink_cycle(NULL); /* Hurry and connect to tandem bots */
1191 add_help_reference("cmds1.help");
1192 add_help_reference("cmds2.help");
1193 add_help_reference("core.help");
1194 add_hook(HOOK_SECONDLY, (Function) core_secondly);
1195 add_hook(HOOK_MINUTELY, (Function) core_minutely);
1196 add_hook(HOOK_HOURLY, (Function) core_hourly);
1197 add_hook(HOOK_REHASH, (Function) event_rehash);
1198 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
1199 add_hook(HOOK_USERFILE, (Function) event_save);
1200 add_hook(HOOK_BACKUP, (Function) backup_userfile);
1201 add_hook(HOOK_DAILY, (Function) event_logfile);
1202 add_hook(HOOK_DAILY, (Function) event_resettraffic);
1203 add_hook(HOOK_LOADED, (Function) event_loaded);
1204
1205 call_hook(HOOK_LOADED);
1206
1207 debug0("main: entering loop");
1208 while (1) {
1209 mainloop(1);
1210 }
1211 }

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