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

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Revision 1.2 - (show annotations) (download) (as text)
Thu Aug 5 18:12:05 2010 UTC (8 years, 10 months ago) by pseudo
Branch: MAIN
Changes since 1.1: +2 -2 lines
File MIME type: text/x-chdr
Added new, full IPv6 support to eggdrop.

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 1.1.1.1 2010/07/26 21:11:06 simple 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 die_on_sighup = 0; /* Die if bot receives SIGHUP */
131 int die_on_sigterm = 1; /* Die if bot receives SIGTERM */
132 int resolve_timeout = 15; /* Hostname/address lookup timeout */
133 char quit_msg[1024]; /* Quit message */
134
135 /* Traffic stats */
136 unsigned long otraffic_irc = 0;
137 unsigned long otraffic_irc_today = 0;
138 unsigned long otraffic_bn = 0;
139 unsigned long otraffic_bn_today = 0;
140 unsigned long otraffic_dcc = 0;
141 unsigned long otraffic_dcc_today = 0;
142 unsigned long otraffic_filesys = 0;
143 unsigned long otraffic_filesys_today = 0;
144 unsigned long otraffic_trans = 0;
145 unsigned long otraffic_trans_today = 0;
146 unsigned long otraffic_unknown = 0;
147 unsigned long otraffic_unknown_today = 0;
148 unsigned long itraffic_irc = 0;
149 unsigned long itraffic_irc_today = 0;
150 unsigned long itraffic_bn = 0;
151 unsigned long itraffic_bn_today = 0;
152 unsigned long itraffic_dcc = 0;
153 unsigned long itraffic_dcc_today = 0;
154 unsigned long itraffic_trans = 0;
155 unsigned long itraffic_trans_today = 0;
156 unsigned long itraffic_unknown = 0;
157 unsigned long itraffic_unknown_today = 0;
158
159 #ifdef DEBUG_CONTEXT
160 /* Context storage for fatal crashes */
161 char cx_file[16][30];
162 char cx_note[16][256];
163 int cx_line[16];
164 int cx_ptr = 0;
165 #endif
166
167
168 void fatal(const char *s, int recoverable)
169 {
170 int i;
171
172 putlog(LOG_MISC, "*", "* %s", s);
173 flushlogs();
174 for (i = 0; i < dcc_total; i++)
175 if (dcc[i].sock >= 0)
176 killsock(dcc[i].sock);
177 unlink(pid_file);
178 if (!recoverable) {
179 bg_send_quit(BG_ABORT);
180 exit(1);
181 }
182 }
183
184 int expmem_chanprog();
185 int expmem_users();
186 int expmem_misc();
187 int expmem_dccutil();
188 int expmem_botnet();
189 int expmem_tcl();
190 int expmem_tclhash();
191 int expmem_net();
192 int expmem_modules(int);
193 int expmem_language();
194 int expmem_tcldcc();
195 int expmem_tclmisc();
196
197 /* For mem.c : calculate memory we SHOULD be using
198 */
199 int expected_memory(void)
200 {
201 int tot;
202
203 tot = expmem_chanprog() + expmem_users() + expmem_misc() + expmem_dccutil() +
204 expmem_botnet() + expmem_tcl() + expmem_tclhash() + expmem_net() +
205 expmem_modules(0) + expmem_language() + expmem_tcldcc() +
206 expmem_tclmisc();
207 return tot;
208 }
209
210 static void check_expired_dcc()
211 {
212 int i;
213
214 for (i = 0; i < dcc_total; i++)
215 if (dcc[i].type && dcc[i].type->timeout_val &&
216 ((now - dcc[i].timeval) > *(dcc[i].type->timeout_val))) {
217 if (dcc[i].type->timeout)
218 dcc[i].type->timeout(i);
219 else if (dcc[i].type->eof)
220 dcc[i].type->eof(i);
221 else
222 continue;
223 /* Only timeout 1 socket per cycle, too risky for more */
224 return;
225 }
226 }
227
228 #ifndef DEBUG_CONTEXT
229 #define write_debug() do {} while (0)
230 #else
231 static int nested_debug = 0;
232
233 static void write_debug()
234 {
235 int x;
236 char s[25];
237 int y;
238
239 if (nested_debug) {
240 /* Yoicks, if we have this there's serious trouble!
241 * All of these are pretty reliable, so we'll try these.
242 *
243 * NOTE: dont try and display context-notes in here, it's
244 * _not_ safe <cybah>
245 */
246 x = creat("DEBUG.DEBUG", 0644);
247 setsock(x, SOCK_NONSOCK);
248 if (x >= 0) {
249 strncpyz(s, ctime(&now), sizeof s);
250 dprintf(-x, "Debug (%s) written %s\n", ver, s);
251 dprintf(-x, "Please report problem to bugs@eggheads.org\n");
252 dprintf(-x, "after a visit to http://www.eggheads.org/bugzilla/\n");
253 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
254 dprintf(-x, "Context: ");
255 cx_ptr = cx_ptr & 15;
256 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
257 dprintf(-x, "%s/%d,\n ", cx_file[y], cx_line[y]);
258 dprintf(-x, "%s/%d\n\n", cx_file[y], cx_line[y]);
259 killsock(x);
260 close(x);
261 }
262 bg_send_quit(BG_ABORT);
263 exit(1); /* Dont even try & tell people about, that may
264 * have caused the fault last time. */
265 } else
266 nested_debug = 1;
267 putlog(LOG_MISC, "*", "* Last context: %s/%d [%s]", cx_file[cx_ptr],
268 cx_line[cx_ptr], cx_note[cx_ptr][0] ? cx_note[cx_ptr] : "");
269 putlog(LOG_MISC, "*", "* Please REPORT this BUG!");
270 putlog(LOG_MISC, "*", "* Check doc/BUG-REPORT on how to do so.");
271 x = creat("DEBUG", 0644);
272 setsock(x, SOCK_NONSOCK);
273 if (x < 0) {
274 putlog(LOG_MISC, "*", "* Failed to write DEBUG");
275 } else {
276 strncpyz(s, ctime(&now), sizeof s);
277 dprintf(-x, "Debug (%s) written %s\n", ver, s);
278 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
279 #ifdef STATIC
280 dprintf(-x, "STATICALLY LINKED\n");
281 #endif
282
283 /* info library */
284 dprintf(-x, "Tcl library: %s\n",
285 ((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
286 tcl_resultstring() : "*unknown*");
287
288 /* info tclversion/patchlevel */
289 dprintf(-x, "Tcl version: %s (header version %s)\n",
290 ((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
291 tcl_resultstring() : (Tcl_Eval(interp, "info tclversion") == TCL_OK) ?
292 tcl_resultstring() : "*unknown*", TCL_PATCH_LEVEL ? TCL_PATCH_LEVEL :
293 "*unknown*");
294
295 if (tcl_threaded())
296 dprintf(-x, "Tcl is threaded\n");
297
298 #ifdef CCFLAGS
299 dprintf(-x, "Compile flags: %s\n", CCFLAGS);
300 #endif
301
302 #ifdef LDFLAGS
303 dprintf(-x, "Link flags: %s\n", LDFLAGS);
304 #endif
305
306 #ifdef STRIPFLAGS
307 dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
308 #endif
309
310 dprintf(-x, "Context: ");
311 cx_ptr = cx_ptr & 15;
312 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
313 dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
314 (cx_note[y][0]) ? cx_note[y] : "");
315 dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
316 (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
317 tell_dcc(-x);
318 dprintf(-x, "\n");
319 debug_mem_to_dcc(-x);
320 killsock(x);
321 close(x);
322 putlog(LOG_MISC, "*", "* Wrote DEBUG");
323 }
324 }
325 #endif /* DEBUG_CONTEXT */
326
327 static void got_bus(int z)
328 {
329 write_debug();
330 fatal("BUS ERROR -- CRASHING!", 1);
331 #ifdef SA_RESETHAND
332 kill(getpid(), SIGBUS);
333 #else
334 bg_send_quit(BG_ABORT);
335 exit(1);
336 #endif
337 }
338
339 static void got_segv(int z)
340 {
341 write_debug();
342 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
343 #ifdef SA_RESETHAND
344 kill(getpid(), SIGSEGV);
345 #else
346 bg_send_quit(BG_ABORT);
347 exit(1);
348 #endif
349 }
350
351 static void got_fpe(int z)
352 {
353 write_debug();
354 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
355 }
356
357 static void got_term(int z)
358 {
359 write_userfile(-1);
360 check_tcl_event("sigterm");
361 if (die_on_sigterm) {
362 botnet_send_chat(-1, botnetnick, "ACK, I've been terminated!");
363 fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
364 } else
365 putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
366 }
367
368 static void got_quit(int z)
369 {
370 check_tcl_event("sigquit");
371 putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
372 return;
373 }
374
375 static void got_hup(int z)
376 {
377 write_userfile(-1);
378 check_tcl_event("sighup");
379 if (die_on_sighup) {
380 fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
381 } else
382 putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
383 do_restart = -2;
384 return;
385 }
386
387 /* A call to resolver (gethostbyname, etc) timed out
388 */
389 static void got_alarm(int z)
390 {
391 siglongjmp(alarmret, 1);
392
393 /* -Never reached- */
394 }
395
396 /* Got ILL signal -- log context and continue
397 */
398 static void got_ill(int z)
399 {
400 check_tcl_event("sigill");
401 #ifdef DEBUG_CONTEXT
402 putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
403 cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
404 #endif
405 }
406
407 #ifdef DEBUG_CONTEXT
408 /* Called from the Context macro.
409 */
410 void eggContext(const char *file, int line, const char *module)
411 {
412 char x[31], *p;
413
414 p = strrchr(file, '/');
415 if (!module) {
416 strncpyz(x, p ? p + 1 : file, sizeof x);
417 } else
418 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
419 cx_ptr = ((cx_ptr + 1) & 15);
420 strcpy(cx_file[cx_ptr], x);
421 cx_line[cx_ptr] = line;
422 cx_note[cx_ptr][0] = 0;
423 }
424
425 /* Called from the ContextNote macro.
426 */
427 void eggContextNote(const char *file, int line, const char *module,
428 const char *note)
429 {
430 char x[31], *p;
431
432 p = strrchr(file, '/');
433 if (!module)
434 strncpyz(x, p ? p + 1 : file, sizeof x);
435 else
436 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
437 cx_ptr = ((cx_ptr + 1) & 15);
438 strcpy(cx_file[cx_ptr], x);
439 cx_line[cx_ptr] = line;
440 strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
441 }
442 #endif /* DEBUG_CONTEXT */
443
444 #ifdef DEBUG_ASSERT
445 /* Called from the Assert macro.
446 */
447 void eggAssert(const char *file, int line, const char *module)
448 {
449 write_debug();
450 if (!module)
451 putlog(LOG_MISC, "*", "* In file %s, line %u", file, line);
452 else
453 putlog(LOG_MISC, "*", "* In file %s:%s, line %u", module, file, line);
454 fatal("ASSERT FAILED -- CRASHING!", 1);
455 }
456 #endif
457
458 static void do_arg(char *s)
459 {
460 char x[512], *z = x;
461 int i;
462
463 if (s[0] == '-')
464 for (i = 1; i < strlen(s); i++) {
465 switch (s[i]) {
466 case 'n':
467 backgrd = 0;
468 break;
469 case 'c':
470 con_chan = 1;
471 term_z = 0;
472 break;
473 case 't':
474 con_chan = 0;
475 term_z = 1;
476 break;
477 case 'm':
478 make_userfile = 1;
479 break;
480 case 'v':
481 strncpyz(x, egg_version, sizeof x);
482 newsplit(&z);
483 newsplit(&z);
484 printf("%s\n", version);
485 if (z[0])
486 printf(" (patches: %s)\n", z);
487 bg_send_quit(BG_ABORT);
488 exit(0);
489 break; /* this should never be reached */
490 case 'h':
491 printf("\n%s\n\n", version);
492 printf(EGG_USAGE);
493 printf("\n");
494 bg_send_quit(BG_ABORT);
495 exit(0);
496 break; /* this should never be reached */
497 }
498 } else
499 strncpyz(configfile, s, sizeof configfile);
500 }
501
502 void backup_userfile(void)
503 {
504 char s[125];
505
506 if (quiet_save < 2)
507 putlog(LOG_MISC, "*", USERF_BACKUP);
508 egg_snprintf(s, sizeof s, "%s~bak", userfile);
509 copyfile(userfile, s);
510 }
511
512 /* Timer info */
513 static int lastmin = 99;
514 static time_t then;
515 static struct tm nowtm;
516
517 /* Called once a second.
518 *
519 * Note: Try to not put any Context lines in here (guppy 21Mar2000).
520 */
521 static void core_secondly()
522 {
523 static int cnt = 0;
524 int miltime;
525
526 do_check_timers(&utimer); /* Secondly timers */
527 cnt++;
528 if (cnt >= 10) { /* Every 10 seconds */
529 cnt = 0;
530 check_expired_dcc();
531 if (con_chan && !backgrd) {
532 dprintf(DP_STDOUT, "\033[2J\033[1;1H");
533 tell_verbose_status(DP_STDOUT);
534 do_module_report(DP_STDOUT, 0, "server");
535 do_module_report(DP_STDOUT, 0, "channels");
536 tell_mem_status_dcc(DP_STDOUT);
537 }
538 }
539 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
540 if (nowtm.tm_min != lastmin) {
541 int i = 0;
542
543 /* Once a minute */
544 lastmin = (lastmin + 1) % 60;
545 call_hook(HOOK_MINUTELY);
546 check_expired_ignores();
547 autolink_cycle(NULL); /* Attempt autolinks */
548 /* In case for some reason more than 1 min has passed: */
549 while (nowtm.tm_min != lastmin) {
550 /* Timer drift, dammit */
551 debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
552 i++;
553 lastmin = (lastmin + 1) % 60;
554 call_hook(HOOK_MINUTELY);
555 }
556 if (i > 1)
557 putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
558 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
559 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
560 call_hook(HOOK_5MINUTELY);
561 check_botnet_pings();
562 if (!quick_logs) {
563 flushlogs();
564 check_logsize();
565 }
566 if (!miltime) { /* At midnight */
567 char s[25];
568 int j;
569
570 strncpyz(s, ctime(&now), sizeof s);
571 if (quiet_save < 3)
572 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
573 call_hook(HOOK_BACKUP);
574 for (j = 0; j < max_logs; j++) {
575 if (logs[j].filename != NULL && logs[j].f != NULL) {
576 fclose(logs[j].f);
577 logs[j].f = NULL;
578 }
579 }
580 }
581 }
582 if (nowtm.tm_min == notify_users_at)
583 call_hook(HOOK_HOURLY);
584 /* These no longer need checking since they are all check vs minutely
585 * settings and we only get this far on the minute.
586 */
587 if (miltime == switch_logfiles_at) {
588 call_hook(HOOK_DAILY);
589 if (!keep_all_logs) {
590 if (quiet_save < 3)
591 putlog(LOG_MISC, "*", MISC_LOGSWITCH);
592 for (i = 0; i < max_logs; i++)
593 if (logs[i].filename) {
594 char s[1024];
595
596 if (logs[i].f) {
597 fclose(logs[i].f);
598 logs[i].f = NULL;
599 }
600 egg_snprintf(s, sizeof s, "%s.yesterday", logs[i].filename);
601 unlink(s);
602 movefile(logs[i].filename, s);
603 }
604 }
605 }
606 }
607 }
608
609 static void core_minutely()
610 {
611 check_tcl_time(&nowtm);
612 check_tcl_cron(&nowtm);
613 do_check_timers(&timer);
614 if (quick_logs != 0) {
615 flushlogs();
616 check_logsize();
617 }
618 }
619
620 static void core_hourly()
621 {
622 write_userfile(-1);
623 }
624
625 static void event_rehash()
626 {
627 check_tcl_event("rehash");
628 }
629
630 static void event_prerehash()
631 {
632 check_tcl_event("prerehash");
633 }
634
635 static void event_save()
636 {
637 check_tcl_event("save");
638 }
639
640 static void event_logfile()
641 {
642 check_tcl_event("logfile");
643 }
644
645 static void event_resettraffic()
646 {
647 otraffic_irc += otraffic_irc_today;
648 itraffic_irc += itraffic_irc_today;
649 otraffic_bn += otraffic_bn_today;
650 itraffic_bn += itraffic_bn_today;
651 otraffic_dcc += otraffic_dcc_today;
652 itraffic_dcc += itraffic_dcc_today;
653 otraffic_unknown += otraffic_unknown_today;
654 itraffic_unknown += itraffic_unknown_today;
655 otraffic_trans += otraffic_trans_today;
656 itraffic_trans += itraffic_trans_today;
657 otraffic_irc_today = otraffic_bn_today = 0;
658 otraffic_dcc_today = otraffic_unknown_today = 0;
659 itraffic_irc_today = itraffic_bn_today = 0;
660 itraffic_dcc_today = itraffic_unknown_today = 0;
661 itraffic_trans_today = otraffic_trans_today = 0;
662 }
663
664 static void event_loaded()
665 {
666 check_tcl_event("loaded");
667 }
668
669 void kill_tcl();
670 extern module_entry *module_list;
671 void restart_chons();
672
673 #ifdef STATIC
674 void check_static(char *, char *(*)());
675
676 #include "mod/static.h"
677 #endif
678 int init_threaddata(int);
679 int init_mem();
680 int init_userent();
681 int init_misc();
682 int init_bots();
683 int init_modules();
684 int init_tcl(int, char **);
685 int init_language(int);
686
687 static void patch(const char *str)
688 {
689 char *p = strchr(egg_version, '+');
690
691 if (!p)
692 p = &egg_version[strlen(egg_version)];
693 sprintf(p, "+%s", str);
694 egg_numver++;
695 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
696 }
697
698 static inline void garbage_collect(void)
699 {
700 static u_8bit_t run_cnt = 0;
701
702 if (run_cnt == 3)
703 garbage_collect_tclhash();
704 else
705 run_cnt++;
706 }
707
708 int mainloop(int toplevel)
709 {
710 static int socket_cleanup = 0;
711 int xx, i, eggbusy = 1, tclbusy = 0;
712 char buf[520];
713
714 /* Lets move some of this here, reducing the numer of actual
715 * calls to periodic_timers
716 */
717 now = time(NULL);
718 /*
719 * FIXME: Get rid of this, it's ugly and wastes lots of cpu.
720 *
721 * pre-1.3.0 Eggdrop had random() in the once a second block below.
722 *
723 * This attempts to keep random() more random by constantly
724 * calling random() and updating the state information.
725 */
726 random(); /* Woop, lets really jumble things */
727
728 /* If we want to restart, we have to unwind to the toplevel.
729 * Tcl will Panic if we kill the interp with Tcl_Eval in progress.
730 * This is done by returning -1 in tickle_WaitForEvent.
731 */
732 if (do_restart && do_restart != -2 && !toplevel)
733 return -1;
734
735 /* Once a second */
736 if (now != then) {
737 call_hook(HOOK_SECONDLY);
738 then = now;
739 }
740
741 /* Only do this every so often. */
742 if (!socket_cleanup) {
743 socket_cleanup = 5;
744
745 /* Remove dead dcc entries. */
746 dcc_remove_lost();
747
748 /* Check for server or dcc activity. */
749 dequeue_sockets();
750 } else
751 socket_cleanup--;
752
753 /* Free unused structures. */
754 garbage_collect();
755
756 xx = sockgets(buf, &i);
757 if (xx >= 0) { /* Non-error */
758 int idx;
759
760 for (idx = 0; idx < dcc_total; idx++)
761 if (dcc[idx].sock == xx) {
762 if (dcc[idx].type && dcc[idx].type->activity) {
763 /* Traffic stats */
764 if (dcc[idx].type->name) {
765 if (!strncmp(dcc[idx].type->name, "BOT", 3))
766 itraffic_bn_today += strlen(buf) + 1;
767 else if (!strcmp(dcc[idx].type->name, "SERVER"))
768 itraffic_irc_today += strlen(buf) + 1;
769 else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
770 itraffic_dcc_today += strlen(buf) + 1;
771 else if (!strncmp(dcc[idx].type->name, "FILES", 5))
772 itraffic_dcc_today += strlen(buf) + 1;
773 else if (!strcmp(dcc[idx].type->name, "SEND"))
774 itraffic_trans_today += strlen(buf) + 1;
775 else if (!strncmp(dcc[idx].type->name, "GET", 3))
776 itraffic_trans_today += strlen(buf) + 1;
777 else
778 itraffic_unknown_today += strlen(buf) + 1;
779 }
780 dcc[idx].type->activity(idx, buf, i);
781 } else
782 putlog(LOG_MISC, "*",
783 "!!! untrapped dcc activity: type %s, sock %d",
784 dcc[idx].type->name, dcc[idx].sock);
785 break;
786 }
787 } else if (xx == -1) { /* EOF from someone */
788 int idx;
789
790 if (i == STDOUT && !backgrd)
791 fatal("END OF FILE ON TERMINAL", 0);
792 for (idx = 0; idx < dcc_total; idx++)
793 if (dcc[idx].sock == i) {
794 if (dcc[idx].type && dcc[idx].type->eof)
795 dcc[idx].type->eof(idx);
796 else {
797 putlog(LOG_MISC, "*",
798 "*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
799 i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
800 killsock(i);
801 lostdcc(idx);
802 }
803 idx = dcc_total + 1;
804 }
805 if (idx == dcc_total) {
806 putlog(LOG_MISC, "*",
807 "(@) EOF socket %d, not a dcc socket, not anything.", i);
808 close(i);
809 killsock(i);
810 }
811 } else if (xx == -2 && errno != EINTR) { /* select() error */
812 putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
813 for (i = 0; i < dcc_total; i++) {
814 if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno == EBADF)) {
815 putlog(LOG_MISC, "*",
816 "DCC socket %d (type %d, name '%s') expired -- pfft",
817 dcc[i].sock, dcc[i].type, dcc[i].nick);
818 killsock(dcc[i].sock);
819 lostdcc(i);
820 i--;
821 }
822 }
823 } else if (xx == -3) {
824 call_hook(HOOK_IDLE);
825 socket_cleanup = 0; /* If we've been idle, cleanup & flush */
826 eggbusy = 0;
827 } else if (xx == -5) {
828 eggbusy = 0;
829 tclbusy = 1;
830 }
831
832 if (do_restart) {
833 if (do_restart == -2)
834 rehash();
835 else if (!toplevel)
836 return -1; /* Unwind to toplevel before restarting */
837 else {
838 /* Unload as many modules as possible */
839 int f = 1;
840 module_entry *p;
841 Function startfunc;
842 char name[256];
843
844 /* oops, I guess we should call this event before tcl is restarted */
845 check_tcl_event("prerestart");
846
847 while (f) {
848 f = 0;
849 for (p = module_list; p != NULL; p = p->next) {
850 dependancy *d = dependancy_list;
851 int ok = 1;
852
853 while (ok && d) {
854 if (d->needed == p)
855 ok = 0;
856 d = d->next;
857 }
858 if (ok) {
859 strcpy(name, p->name);
860 if (module_unload(name, botnetnick) == NULL) {
861 f = 1;
862 break;
863 }
864 }
865 }
866 }
867
868 /* Make sure we don't have any modules left hanging around other than
869 * "eggdrop" and the two that are supposed to be.
870 */
871 for (f = 0, p = module_list; p; p = p->next) {
872 if (strcmp(p->name, "eggdrop") && strcmp(p->name, "encryption") &&
873 strcmp(p->name, "uptime")) {
874 f++;
875 }
876 }
877 if (f != 0) {
878 putlog(LOG_MISC, "*", MOD_STAGNANT);
879 }
880
881 flushlogs();
882 kill_tcl();
883 init_tcl(argc, argv);
884 init_language(0);
885
886 /* this resets our modules which we didn't unload (encryption and uptime) */
887 for (p = module_list; p; p = p->next) {
888 if (p->funcs) {
889 startfunc = p->funcs[MODCALL_START];
890 startfunc(NULL);
891 }
892 }
893
894 rehash();
895 restart_chons();
896 call_hook(HOOK_LOADED);
897 }
898 eggbusy = 1;
899 do_restart = 0;
900 }
901
902 #ifdef USE_TCL_EVENTS
903 if (!eggbusy) {
904 /* Process all pending tcl events */
905 # ifdef REPLACE_NOTIFIER
906 if (Tcl_ServiceAll())
907 tclbusy = 1;
908 # else
909 while (Tcl_DoOneEvent(TCL_DONT_WAIT | TCL_ALL_EVENTS))
910 tclbusy = 1;
911 # endif /* REPLACE_NOTIFIER */
912 #endif /* USE_TCL_EVENTS */
913 }
914
915 return (eggbusy || tclbusy);
916 }
917
918 int main(int arg_c, char **arg_v)
919 {
920 int i, xx;
921 char s[25];
922 FILE *f;
923 struct sigaction sv;
924 struct chanset_t *chan;
925 #ifdef DEBUG
926 struct rlimit cdlim;
927 #endif
928 #ifdef STOP_UAC
929 int nvpair[2];
930 #endif
931
932 /* Make sure it can write core, if you make debug. Else it's pretty
933 * useless (dw)
934 *
935 * Only allow unlimited size core files when compiled with DEBUG defined.
936 * This is not a good idea for normal builds -- in these cases, use the
937 * default system resource limits instead.
938 */
939 #ifdef DEBUG
940 cdlim.rlim_cur = RLIM_INFINITY;
941 cdlim.rlim_max = RLIM_INFINITY;
942 setrlimit(RLIMIT_CORE, &cdlim);
943 #endif
944
945 #ifdef DEBUG_CONTEXT
946 /* Initialise context list */
947 for (i = 0; i < 16; i++)
948 Context;
949 #endif
950
951 /* Include patch.h header for patch("...") */
952 #include "patch.h"
953
954 argc = arg_c;
955 argv = arg_v;
956
957 /* Version info! */
958 egg_snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
959 egg_snprintf(version, sizeof version,
960 "Eggdrop v%s (C) 1997 Robey Pointer (C) 2010 Eggheads",
961 egg_version);
962 /* Now add on the patchlevel (for Tcl) */
963 sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
964 strcat(egg_version, egg_xtra);
965
966 /* For OSF/1 */
967 #ifdef STOP_UAC
968 /* Don't print "unaligned access fixup" warning to the user */
969 nvpair[0] = SSIN_UACPROC;
970 nvpair[1] = UAC_NOPRINT;
971 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
972 #endif
973
974 /* Set up error traps: */
975 sv.sa_handler = got_bus;
976 sigemptyset(&sv.sa_mask);
977 #ifdef SA_RESETHAND
978 sv.sa_flags = SA_RESETHAND;
979 #else
980 sv.sa_flags = 0;
981 #endif
982 sigaction(SIGBUS, &sv, NULL);
983 sv.sa_handler = got_segv;
984 sigaction(SIGSEGV, &sv, NULL);
985 #ifdef SA_RESETHAND
986 sv.sa_flags = 0;
987 #endif
988 sv.sa_handler = got_fpe;
989 sigaction(SIGFPE, &sv, NULL);
990 sv.sa_handler = got_term;
991 sigaction(SIGTERM, &sv, NULL);
992 sv.sa_handler = got_hup;
993 sigaction(SIGHUP, &sv, NULL);
994 sv.sa_handler = got_quit;
995 sigaction(SIGQUIT, &sv, NULL);
996 sv.sa_handler = SIG_IGN;
997 sigaction(SIGPIPE, &sv, NULL);
998 sv.sa_handler = got_ill;
999 sigaction(SIGILL, &sv, NULL);
1000 sv.sa_handler = got_alarm;
1001 sigaction(SIGALRM, &sv, NULL);
1002
1003 /* Initialize variables and stuff */
1004 now = time(NULL);
1005 chanset = NULL;
1006 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
1007 lastmin = nowtm.tm_min;
1008 srandom((unsigned int) (now % (getpid() + getppid())));
1009 init_mem();
1010 init_language(1);
1011 if (argc > 1)
1012 for (i = 1; i < argc; i++)
1013 do_arg(argv[i]);
1014
1015 printf("\n%s\n", version);
1016
1017 #ifndef CYGWIN_HACKS
1018 /* Don't allow eggdrop to run as root
1019 * This check isn't useful under cygwin and has been
1020 * reported to cause trouble in some situations.
1021 */
1022 if (((int) getuid() == 0) || ((int) geteuid() == 0))
1023 fatal("ERROR: Eggdrop will not run as root!", 0);
1024 #endif
1025
1026 #ifndef REPLACE_NOTIFIER
1027 init_threaddata(1);
1028 #endif
1029 init_userent();
1030 init_misc();
1031 init_bots();
1032 init_modules();
1033 if (backgrd)
1034 bg_prepare_split();
1035 init_tcl(argc, argv);
1036 init_language(0);
1037 #ifdef STATIC
1038 link_statics();
1039 #endif
1040 strncpyz(s, ctime(&now), sizeof s);
1041 strcpy(&s[11], &s[20]);
1042 putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
1043 chanprog();
1044 if (!encrypt_pass) {
1045 printf(MOD_NOCRYPT);
1046 bg_send_quit(BG_ABORT);
1047 exit(1);
1048 }
1049 i = 0;
1050 for (chan = chanset; chan; chan = chan->next)
1051 i++;
1052 putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
1053 botnetnick, i, count_users(userlist));
1054 cache_miss = 0;
1055 cache_hit = 0;
1056 if (!pid_file[0])
1057 egg_snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
1058
1059 /* Check for pre-existing eggdrop! */
1060 f = fopen(pid_file, "r");
1061 if (f != NULL) {
1062 fgets(s, 10, f);
1063 xx = atoi(s);
1064 i = kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
1065 * is used */
1066 if (i == 0 || errno != ESRCH) {
1067 printf(EGG_RUNNING1, botnetnick);
1068 printf(EGG_RUNNING2, pid_file);
1069 bg_send_quit(BG_ABORT);
1070 exit(1);
1071 }
1072 }
1073
1074 /* Move into background? */
1075 if (backgrd) {
1076 bg_do_split();
1077 } else { /* !backgrd */
1078 xx = getpid();
1079 if (xx != 0) {
1080 FILE *fp;
1081
1082 /* Write pid to file */
1083 unlink(pid_file);
1084 fp = fopen(pid_file, "w");
1085 if (fp != NULL) {
1086 fprintf(fp, "%u\n", xx);
1087 if (fflush(fp)) {
1088 /* Let the bot live since this doesn't appear to be a botchk */
1089 printf(EGG_NOWRITE, pid_file);
1090 fclose(fp);
1091 unlink(pid_file);
1092 } else
1093 fclose(fp);
1094 } else
1095 printf(EGG_NOWRITE, pid_file);
1096 }
1097 }
1098
1099 use_stderr = 0; /* Stop writing to stderr now */
1100 if (backgrd) {
1101 /* Ok, try to disassociate from controlling terminal (finger cross) */
1102 #ifdef HAVE_SETPGID
1103 setpgid(0, 0);
1104 #endif
1105 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
1106 freopen("/dev/null", "r", stdin);
1107 freopen("/dev/null", "w", stdout);
1108 freopen("/dev/null", "w", stderr);
1109 #ifdef CYGWIN_HACKS
1110 FreeConsole();
1111 #endif
1112 }
1113
1114 /* Terminal emulating dcc chat */
1115 if (!backgrd && term_z) {
1116 int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
1117
1118 getvhost(&dcc[n].sockname, AF_INET);
1119 dcc[n].sock = STDOUT;
1120 dcc[n].timeval = now;
1121 dcc[n].u.chat->con_flags = conmask;
1122 dcc[n].u.chat->strip_flags = STRIP_ALL;
1123 dcc[n].status = STAT_ECHO;
1124 strcpy(dcc[n].nick, "HQ");
1125 strcpy(dcc[n].host, "llama@console");
1126 /* HACK: Workaround not to pass literal "HQ" as a non-const arg */
1127 dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
1128 /* Make sure there's an innocuous HQ user if needed */
1129 if (!dcc[n].user) {
1130 userlist = adduser(userlist, dcc[n].nick, "none", "-", USER_PARTY);
1131 dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
1132 }
1133 setsock(STDOUT, 0); /* Entry in net table */
1134 dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
1135 dcc_chatter(n);
1136 }
1137
1138 then = now;
1139 online_since = now;
1140 autolink_cycle(NULL); /* Hurry and connect to tandem bots */
1141 add_help_reference("cmds1.help");
1142 add_help_reference("cmds2.help");
1143 add_help_reference("core.help");
1144 add_hook(HOOK_SECONDLY, (Function) core_secondly);
1145 add_hook(HOOK_MINUTELY, (Function) core_minutely);
1146 add_hook(HOOK_HOURLY, (Function) core_hourly);
1147 add_hook(HOOK_REHASH, (Function) event_rehash);
1148 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
1149 add_hook(HOOK_USERFILE, (Function) event_save);
1150 add_hook(HOOK_BACKUP, (Function) backup_userfile);
1151 add_hook(HOOK_DAILY, (Function) event_logfile);
1152 add_hook(HOOK_DAILY, (Function) event_resettraffic);
1153 add_hook(HOOK_LOADED, (Function) event_loaded);
1154
1155 call_hook(HOOK_LOADED);
1156
1157 debug0("main: entering loop");
1158 while (1) {
1159 mainloop(1);
1160 }
1161 }

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