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

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Revision 1.3 - (show annotations) (download) (as text)
Sun Oct 10 21:24:43 2010 UTC (8 years, 7 months ago) by pseudo
Branch: MAIN
Changes since 1.2: +13 -1 lines
File MIME type: text/x-chdr
Removed the unrecognized options warning when configuring modules.
Modified -v output and .status display configure options.

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 1.2 2010/08/05 18:12:05 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 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 #ifdef IPV6
298 dprintf(-x, "Compiled with IPv6 support\n");
299 #else
300 dprintf(-x, "Compiled without IPv6 support\n");
301 #endif
302
303 dprintf(-x, "Configure flags: %s\n", EGG_AC_ARGS);
304 #ifdef CCFLAGS
305 dprintf(-x, "Compile flags: %s\n", CCFLAGS);
306 #endif
307
308 #ifdef LDFLAGS
309 dprintf(-x, "Link flags: %s\n", LDFLAGS);
310 #endif
311
312 #ifdef STRIPFLAGS
313 dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
314 #endif
315
316 dprintf(-x, "Context: ");
317 cx_ptr = cx_ptr & 15;
318 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
319 dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
320 (cx_note[y][0]) ? cx_note[y] : "");
321 dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
322 (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
323 tell_dcc(-x);
324 dprintf(-x, "\n");
325 debug_mem_to_dcc(-x);
326 killsock(x);
327 close(x);
328 putlog(LOG_MISC, "*", "* Wrote DEBUG");
329 }
330 }
331 #endif /* DEBUG_CONTEXT */
332
333 static void got_bus(int z)
334 {
335 write_debug();
336 fatal("BUS ERROR -- CRASHING!", 1);
337 #ifdef SA_RESETHAND
338 kill(getpid(), SIGBUS);
339 #else
340 bg_send_quit(BG_ABORT);
341 exit(1);
342 #endif
343 }
344
345 static void got_segv(int z)
346 {
347 write_debug();
348 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
349 #ifdef SA_RESETHAND
350 kill(getpid(), SIGSEGV);
351 #else
352 bg_send_quit(BG_ABORT);
353 exit(1);
354 #endif
355 }
356
357 static void got_fpe(int z)
358 {
359 write_debug();
360 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
361 }
362
363 static void got_term(int z)
364 {
365 write_userfile(-1);
366 check_tcl_event("sigterm");
367 if (die_on_sigterm) {
368 botnet_send_chat(-1, botnetnick, "ACK, I've been terminated!");
369 fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
370 } else
371 putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
372 }
373
374 static void got_quit(int z)
375 {
376 check_tcl_event("sigquit");
377 putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
378 return;
379 }
380
381 static void got_hup(int z)
382 {
383 write_userfile(-1);
384 check_tcl_event("sighup");
385 if (die_on_sighup) {
386 fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
387 } else
388 putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
389 do_restart = -2;
390 return;
391 }
392
393 /* A call to resolver (gethostbyname, etc) timed out
394 */
395 static void got_alarm(int z)
396 {
397 siglongjmp(alarmret, 1);
398
399 /* -Never reached- */
400 }
401
402 /* Got ILL signal -- log context and continue
403 */
404 static void got_ill(int z)
405 {
406 check_tcl_event("sigill");
407 #ifdef DEBUG_CONTEXT
408 putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
409 cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
410 #endif
411 }
412
413 #ifdef DEBUG_CONTEXT
414 /* Called from the Context macro.
415 */
416 void eggContext(const char *file, int line, const char *module)
417 {
418 char x[31], *p;
419
420 p = strrchr(file, '/');
421 if (!module) {
422 strncpyz(x, p ? p + 1 : file, sizeof x);
423 } else
424 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
425 cx_ptr = ((cx_ptr + 1) & 15);
426 strcpy(cx_file[cx_ptr], x);
427 cx_line[cx_ptr] = line;
428 cx_note[cx_ptr][0] = 0;
429 }
430
431 /* Called from the ContextNote macro.
432 */
433 void eggContextNote(const char *file, int line, const char *module,
434 const char *note)
435 {
436 char x[31], *p;
437
438 p = strrchr(file, '/');
439 if (!module)
440 strncpyz(x, p ? p + 1 : file, sizeof x);
441 else
442 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
443 cx_ptr = ((cx_ptr + 1) & 15);
444 strcpy(cx_file[cx_ptr], x);
445 cx_line[cx_ptr] = line;
446 strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
447 }
448 #endif /* DEBUG_CONTEXT */
449
450 #ifdef DEBUG_ASSERT
451 /* Called from the Assert macro.
452 */
453 void eggAssert(const char *file, int line, const char *module)
454 {
455 write_debug();
456 if (!module)
457 putlog(LOG_MISC, "*", "* In file %s, line %u", file, line);
458 else
459 putlog(LOG_MISC, "*", "* In file %s:%s, line %u", module, file, line);
460 fatal("ASSERT FAILED -- CRASHING!", 1);
461 }
462 #endif
463
464 static void do_arg(char *s)
465 {
466 char x[512], *z = x;
467 int i;
468
469 if (s[0] == '-')
470 for (i = 1; i < strlen(s); i++) {
471 switch (s[i]) {
472 case 'n':
473 backgrd = 0;
474 break;
475 case 'c':
476 con_chan = 1;
477 term_z = 0;
478 break;
479 case 't':
480 con_chan = 0;
481 term_z = 1;
482 break;
483 case 'm':
484 make_userfile = 1;
485 break;
486 case 'v':
487 strncpyz(x, egg_version, sizeof x);
488 newsplit(&z);
489 newsplit(&z);
490 printf("%s\n", version);
491 if (z[0])
492 printf(" (patches: %s)\n", z);
493 printf("Configured with: " EGG_AC_ARGS "\n");
494 printf("Compiled with: ");
495 #ifdef IPV6
496 printf("IPv6, ");
497 #endif
498 printf("handlen=%d\n", HANDLEN);
499 bg_send_quit(BG_ABORT);
500 exit(0);
501 break; /* this should never be reached */
502 case 'h':
503 printf("\n%s\n\n", version);
504 printf(EGG_USAGE);
505 printf("\n");
506 bg_send_quit(BG_ABORT);
507 exit(0);
508 break; /* this should never be reached */
509 }
510 } else
511 strncpyz(configfile, s, sizeof configfile);
512 }
513
514 void backup_userfile(void)
515 {
516 char s[125];
517
518 if (quiet_save < 2)
519 putlog(LOG_MISC, "*", USERF_BACKUP);
520 egg_snprintf(s, sizeof s, "%s~bak", userfile);
521 copyfile(userfile, s);
522 }
523
524 /* Timer info */
525 static int lastmin = 99;
526 static time_t then;
527 static struct tm nowtm;
528
529 /* Called once a second.
530 *
531 * Note: Try to not put any Context lines in here (guppy 21Mar2000).
532 */
533 static void core_secondly()
534 {
535 static int cnt = 0;
536 int miltime;
537
538 do_check_timers(&utimer); /* Secondly timers */
539 cnt++;
540 if (cnt >= 10) { /* Every 10 seconds */
541 cnt = 0;
542 check_expired_dcc();
543 if (con_chan && !backgrd) {
544 dprintf(DP_STDOUT, "\033[2J\033[1;1H");
545 tell_verbose_status(DP_STDOUT);
546 do_module_report(DP_STDOUT, 0, "server");
547 do_module_report(DP_STDOUT, 0, "channels");
548 tell_mem_status_dcc(DP_STDOUT);
549 }
550 }
551 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
552 if (nowtm.tm_min != lastmin) {
553 int i = 0;
554
555 /* Once a minute */
556 lastmin = (lastmin + 1) % 60;
557 call_hook(HOOK_MINUTELY);
558 check_expired_ignores();
559 autolink_cycle(NULL); /* Attempt autolinks */
560 /* In case for some reason more than 1 min has passed: */
561 while (nowtm.tm_min != lastmin) {
562 /* Timer drift, dammit */
563 debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
564 i++;
565 lastmin = (lastmin + 1) % 60;
566 call_hook(HOOK_MINUTELY);
567 }
568 if (i > 1)
569 putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
570 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
571 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
572 call_hook(HOOK_5MINUTELY);
573 check_botnet_pings();
574 if (!quick_logs) {
575 flushlogs();
576 check_logsize();
577 }
578 if (!miltime) { /* At midnight */
579 char s[25];
580 int j;
581
582 strncpyz(s, ctime(&now), sizeof s);
583 if (quiet_save < 3)
584 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
585 call_hook(HOOK_BACKUP);
586 for (j = 0; j < max_logs; j++) {
587 if (logs[j].filename != NULL && logs[j].f != NULL) {
588 fclose(logs[j].f);
589 logs[j].f = NULL;
590 }
591 }
592 }
593 }
594 if (nowtm.tm_min == notify_users_at)
595 call_hook(HOOK_HOURLY);
596 /* These no longer need checking since they are all check vs minutely
597 * settings and we only get this far on the minute.
598 */
599 if (miltime == switch_logfiles_at) {
600 call_hook(HOOK_DAILY);
601 if (!keep_all_logs) {
602 if (quiet_save < 3)
603 putlog(LOG_MISC, "*", MISC_LOGSWITCH);
604 for (i = 0; i < max_logs; i++)
605 if (logs[i].filename) {
606 char s[1024];
607
608 if (logs[i].f) {
609 fclose(logs[i].f);
610 logs[i].f = NULL;
611 }
612 egg_snprintf(s, sizeof s, "%s.yesterday", logs[i].filename);
613 unlink(s);
614 movefile(logs[i].filename, s);
615 }
616 }
617 }
618 }
619 }
620
621 static void core_minutely()
622 {
623 check_tcl_time(&nowtm);
624 check_tcl_cron(&nowtm);
625 do_check_timers(&timer);
626 if (quick_logs != 0) {
627 flushlogs();
628 check_logsize();
629 }
630 }
631
632 static void core_hourly()
633 {
634 write_userfile(-1);
635 }
636
637 static void event_rehash()
638 {
639 check_tcl_event("rehash");
640 }
641
642 static void event_prerehash()
643 {
644 check_tcl_event("prerehash");
645 }
646
647 static void event_save()
648 {
649 check_tcl_event("save");
650 }
651
652 static void event_logfile()
653 {
654 check_tcl_event("logfile");
655 }
656
657 static void event_resettraffic()
658 {
659 otraffic_irc += otraffic_irc_today;
660 itraffic_irc += itraffic_irc_today;
661 otraffic_bn += otraffic_bn_today;
662 itraffic_bn += itraffic_bn_today;
663 otraffic_dcc += otraffic_dcc_today;
664 itraffic_dcc += itraffic_dcc_today;
665 otraffic_unknown += otraffic_unknown_today;
666 itraffic_unknown += itraffic_unknown_today;
667 otraffic_trans += otraffic_trans_today;
668 itraffic_trans += itraffic_trans_today;
669 otraffic_irc_today = otraffic_bn_today = 0;
670 otraffic_dcc_today = otraffic_unknown_today = 0;
671 itraffic_irc_today = itraffic_bn_today = 0;
672 itraffic_dcc_today = itraffic_unknown_today = 0;
673 itraffic_trans_today = otraffic_trans_today = 0;
674 }
675
676 static void event_loaded()
677 {
678 check_tcl_event("loaded");
679 }
680
681 void kill_tcl();
682 extern module_entry *module_list;
683 void restart_chons();
684
685 #ifdef STATIC
686 void check_static(char *, char *(*)());
687
688 #include "mod/static.h"
689 #endif
690 int init_threaddata(int);
691 int init_mem();
692 int init_userent();
693 int init_misc();
694 int init_bots();
695 int init_modules();
696 int init_tcl(int, char **);
697 int init_language(int);
698
699 static void patch(const char *str)
700 {
701 char *p = strchr(egg_version, '+');
702
703 if (!p)
704 p = &egg_version[strlen(egg_version)];
705 sprintf(p, "+%s", str);
706 egg_numver++;
707 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
708 }
709
710 static inline void garbage_collect(void)
711 {
712 static u_8bit_t run_cnt = 0;
713
714 if (run_cnt == 3)
715 garbage_collect_tclhash();
716 else
717 run_cnt++;
718 }
719
720 int mainloop(int toplevel)
721 {
722 static int socket_cleanup = 0;
723 int xx, i, eggbusy = 1, tclbusy = 0;
724 char buf[520];
725
726 /* Lets move some of this here, reducing the numer of actual
727 * calls to periodic_timers
728 */
729 now = time(NULL);
730 /*
731 * FIXME: Get rid of this, it's ugly and wastes lots of cpu.
732 *
733 * pre-1.3.0 Eggdrop had random() in the once a second block below.
734 *
735 * This attempts to keep random() more random by constantly
736 * calling random() and updating the state information.
737 */
738 random(); /* Woop, lets really jumble things */
739
740 /* If we want to restart, we have to unwind to the toplevel.
741 * Tcl will Panic if we kill the interp with Tcl_Eval in progress.
742 * This is done by returning -1 in tickle_WaitForEvent.
743 */
744 if (do_restart && do_restart != -2 && !toplevel)
745 return -1;
746
747 /* Once a second */
748 if (now != then) {
749 call_hook(HOOK_SECONDLY);
750 then = now;
751 }
752
753 /* Only do this every so often. */
754 if (!socket_cleanup) {
755 socket_cleanup = 5;
756
757 /* Remove dead dcc entries. */
758 dcc_remove_lost();
759
760 /* Check for server or dcc activity. */
761 dequeue_sockets();
762 } else
763 socket_cleanup--;
764
765 /* Free unused structures. */
766 garbage_collect();
767
768 xx = sockgets(buf, &i);
769 if (xx >= 0) { /* Non-error */
770 int idx;
771
772 for (idx = 0; idx < dcc_total; idx++)
773 if (dcc[idx].sock == xx) {
774 if (dcc[idx].type && dcc[idx].type->activity) {
775 /* Traffic stats */
776 if (dcc[idx].type->name) {
777 if (!strncmp(dcc[idx].type->name, "BOT", 3))
778 itraffic_bn_today += strlen(buf) + 1;
779 else if (!strcmp(dcc[idx].type->name, "SERVER"))
780 itraffic_irc_today += strlen(buf) + 1;
781 else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
782 itraffic_dcc_today += strlen(buf) + 1;
783 else if (!strncmp(dcc[idx].type->name, "FILES", 5))
784 itraffic_dcc_today += strlen(buf) + 1;
785 else if (!strcmp(dcc[idx].type->name, "SEND"))
786 itraffic_trans_today += strlen(buf) + 1;
787 else if (!strncmp(dcc[idx].type->name, "GET", 3))
788 itraffic_trans_today += strlen(buf) + 1;
789 else
790 itraffic_unknown_today += strlen(buf) + 1;
791 }
792 dcc[idx].type->activity(idx, buf, i);
793 } else
794 putlog(LOG_MISC, "*",
795 "!!! untrapped dcc activity: type %s, sock %d",
796 dcc[idx].type->name, dcc[idx].sock);
797 break;
798 }
799 } else if (xx == -1) { /* EOF from someone */
800 int idx;
801
802 if (i == STDOUT && !backgrd)
803 fatal("END OF FILE ON TERMINAL", 0);
804 for (idx = 0; idx < dcc_total; idx++)
805 if (dcc[idx].sock == i) {
806 if (dcc[idx].type && dcc[idx].type->eof)
807 dcc[idx].type->eof(idx);
808 else {
809 putlog(LOG_MISC, "*",
810 "*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
811 i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
812 killsock(i);
813 lostdcc(idx);
814 }
815 idx = dcc_total + 1;
816 }
817 if (idx == dcc_total) {
818 putlog(LOG_MISC, "*",
819 "(@) EOF socket %d, not a dcc socket, not anything.", i);
820 close(i);
821 killsock(i);
822 }
823 } else if (xx == -2 && errno != EINTR) { /* select() error */
824 putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
825 for (i = 0; i < dcc_total; i++) {
826 if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno == EBADF)) {
827 putlog(LOG_MISC, "*",
828 "DCC socket %d (type %d, name '%s') expired -- pfft",
829 dcc[i].sock, dcc[i].type, dcc[i].nick);
830 killsock(dcc[i].sock);
831 lostdcc(i);
832 i--;
833 }
834 }
835 } else if (xx == -3) {
836 call_hook(HOOK_IDLE);
837 socket_cleanup = 0; /* If we've been idle, cleanup & flush */
838 eggbusy = 0;
839 } else if (xx == -5) {
840 eggbusy = 0;
841 tclbusy = 1;
842 }
843
844 if (do_restart) {
845 if (do_restart == -2)
846 rehash();
847 else if (!toplevel)
848 return -1; /* Unwind to toplevel before restarting */
849 else {
850 /* Unload as many modules as possible */
851 int f = 1;
852 module_entry *p;
853 Function startfunc;
854 char name[256];
855
856 /* oops, I guess we should call this event before tcl is restarted */
857 check_tcl_event("prerestart");
858
859 while (f) {
860 f = 0;
861 for (p = module_list; p != NULL; p = p->next) {
862 dependancy *d = dependancy_list;
863 int ok = 1;
864
865 while (ok && d) {
866 if (d->needed == p)
867 ok = 0;
868 d = d->next;
869 }
870 if (ok) {
871 strcpy(name, p->name);
872 if (module_unload(name, botnetnick) == NULL) {
873 f = 1;
874 break;
875 }
876 }
877 }
878 }
879
880 /* Make sure we don't have any modules left hanging around other than
881 * "eggdrop" and the two that are supposed to be.
882 */
883 for (f = 0, p = module_list; p; p = p->next) {
884 if (strcmp(p->name, "eggdrop") && strcmp(p->name, "encryption") &&
885 strcmp(p->name, "uptime")) {
886 f++;
887 }
888 }
889 if (f != 0) {
890 putlog(LOG_MISC, "*", MOD_STAGNANT);
891 }
892
893 flushlogs();
894 kill_tcl();
895 init_tcl(argc, argv);
896 init_language(0);
897
898 /* this resets our modules which we didn't unload (encryption and uptime) */
899 for (p = module_list; p; p = p->next) {
900 if (p->funcs) {
901 startfunc = p->funcs[MODCALL_START];
902 startfunc(NULL);
903 }
904 }
905
906 rehash();
907 restart_chons();
908 call_hook(HOOK_LOADED);
909 }
910 eggbusy = 1;
911 do_restart = 0;
912 }
913
914 #ifdef USE_TCL_EVENTS
915 if (!eggbusy) {
916 /* Process all pending tcl events */
917 # ifdef REPLACE_NOTIFIER
918 if (Tcl_ServiceAll())
919 tclbusy = 1;
920 # else
921 while (Tcl_DoOneEvent(TCL_DONT_WAIT | TCL_ALL_EVENTS))
922 tclbusy = 1;
923 # endif /* REPLACE_NOTIFIER */
924 #endif /* USE_TCL_EVENTS */
925 }
926
927 return (eggbusy || tclbusy);
928 }
929
930 int main(int arg_c, char **arg_v)
931 {
932 int i, xx;
933 char s[25];
934 FILE *f;
935 struct sigaction sv;
936 struct chanset_t *chan;
937 #ifdef DEBUG
938 struct rlimit cdlim;
939 #endif
940 #ifdef STOP_UAC
941 int nvpair[2];
942 #endif
943
944 /* Make sure it can write core, if you make debug. Else it's pretty
945 * useless (dw)
946 *
947 * Only allow unlimited size core files when compiled with DEBUG defined.
948 * This is not a good idea for normal builds -- in these cases, use the
949 * default system resource limits instead.
950 */
951 #ifdef DEBUG
952 cdlim.rlim_cur = RLIM_INFINITY;
953 cdlim.rlim_max = RLIM_INFINITY;
954 setrlimit(RLIMIT_CORE, &cdlim);
955 #endif
956
957 #ifdef DEBUG_CONTEXT
958 /* Initialise context list */
959 for (i = 0; i < 16; i++)
960 Context;
961 #endif
962
963 /* Include patch.h header for patch("...") */
964 #include "patch.h"
965
966 argc = arg_c;
967 argv = arg_v;
968
969 /* Version info! */
970 egg_snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
971 egg_snprintf(version, sizeof version,
972 "Eggdrop v%s (C) 1997 Robey Pointer (C) 2010 Eggheads",
973 egg_version);
974 /* Now add on the patchlevel (for Tcl) */
975 sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
976 strcat(egg_version, egg_xtra);
977
978 /* For OSF/1 */
979 #ifdef STOP_UAC
980 /* Don't print "unaligned access fixup" warning to the user */
981 nvpair[0] = SSIN_UACPROC;
982 nvpair[1] = UAC_NOPRINT;
983 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
984 #endif
985
986 /* Set up error traps: */
987 sv.sa_handler = got_bus;
988 sigemptyset(&sv.sa_mask);
989 #ifdef SA_RESETHAND
990 sv.sa_flags = SA_RESETHAND;
991 #else
992 sv.sa_flags = 0;
993 #endif
994 sigaction(SIGBUS, &sv, NULL);
995 sv.sa_handler = got_segv;
996 sigaction(SIGSEGV, &sv, NULL);
997 #ifdef SA_RESETHAND
998 sv.sa_flags = 0;
999 #endif
1000 sv.sa_handler = got_fpe;
1001 sigaction(SIGFPE, &sv, NULL);
1002 sv.sa_handler = got_term;
1003 sigaction(SIGTERM, &sv, NULL);
1004 sv.sa_handler = got_hup;
1005 sigaction(SIGHUP, &sv, NULL);
1006 sv.sa_handler = got_quit;
1007 sigaction(SIGQUIT, &sv, NULL);
1008 sv.sa_handler = SIG_IGN;
1009 sigaction(SIGPIPE, &sv, NULL);
1010 sv.sa_handler = got_ill;
1011 sigaction(SIGILL, &sv, NULL);
1012 sv.sa_handler = got_alarm;
1013 sigaction(SIGALRM, &sv, NULL);
1014
1015 /* Initialize variables and stuff */
1016 now = time(NULL);
1017 chanset = NULL;
1018 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
1019 lastmin = nowtm.tm_min;
1020 srandom((unsigned int) (now % (getpid() + getppid())));
1021 init_mem();
1022 init_language(1);
1023 if (argc > 1)
1024 for (i = 1; i < argc; i++)
1025 do_arg(argv[i]);
1026
1027 printf("\n%s\n", version);
1028
1029 #ifndef CYGWIN_HACKS
1030 /* Don't allow eggdrop to run as root
1031 * This check isn't useful under cygwin and has been
1032 * reported to cause trouble in some situations.
1033 */
1034 if (((int) getuid() == 0) || ((int) geteuid() == 0))
1035 fatal("ERROR: Eggdrop will not run as root!", 0);
1036 #endif
1037
1038 #ifndef REPLACE_NOTIFIER
1039 init_threaddata(1);
1040 #endif
1041 init_userent();
1042 init_misc();
1043 init_bots();
1044 init_modules();
1045 if (backgrd)
1046 bg_prepare_split();
1047 init_tcl(argc, argv);
1048 init_language(0);
1049 #ifdef STATIC
1050 link_statics();
1051 #endif
1052 strncpyz(s, ctime(&now), sizeof s);
1053 strcpy(&s[11], &s[20]);
1054 putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
1055 chanprog();
1056 if (!encrypt_pass) {
1057 printf(MOD_NOCRYPT);
1058 bg_send_quit(BG_ABORT);
1059 exit(1);
1060 }
1061 i = 0;
1062 for (chan = chanset; chan; chan = chan->next)
1063 i++;
1064 putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
1065 botnetnick, i, count_users(userlist));
1066 cache_miss = 0;
1067 cache_hit = 0;
1068 if (!pid_file[0])
1069 egg_snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
1070
1071 /* Check for pre-existing eggdrop! */
1072 f = fopen(pid_file, "r");
1073 if (f != NULL) {
1074 fgets(s, 10, f);
1075 xx = atoi(s);
1076 i = kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
1077 * is used */
1078 if (i == 0 || errno != ESRCH) {
1079 printf(EGG_RUNNING1, botnetnick);
1080 printf(EGG_RUNNING2, pid_file);
1081 bg_send_quit(BG_ABORT);
1082 exit(1);
1083 }
1084 }
1085
1086 /* Move into background? */
1087 if (backgrd) {
1088 bg_do_split();
1089 } else { /* !backgrd */
1090 xx = getpid();
1091 if (xx != 0) {
1092 FILE *fp;
1093
1094 /* Write pid to file */
1095 unlink(pid_file);
1096 fp = fopen(pid_file, "w");
1097 if (fp != NULL) {
1098 fprintf(fp, "%u\n", xx);
1099 if (fflush(fp)) {
1100 /* Let the bot live since this doesn't appear to be a botchk */
1101 printf(EGG_NOWRITE, pid_file);
1102 fclose(fp);
1103 unlink(pid_file);
1104 } else
1105 fclose(fp);
1106 } else
1107 printf(EGG_NOWRITE, pid_file);
1108 }
1109 }
1110
1111 use_stderr = 0; /* Stop writing to stderr now */
1112 if (backgrd) {
1113 /* Ok, try to disassociate from controlling terminal (finger cross) */
1114 #ifdef HAVE_SETPGID
1115 setpgid(0, 0);
1116 #endif
1117 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
1118 freopen("/dev/null", "r", stdin);
1119 freopen("/dev/null", "w", stdout);
1120 freopen("/dev/null", "w", stderr);
1121 #ifdef CYGWIN_HACKS
1122 FreeConsole();
1123 #endif
1124 }
1125
1126 /* Terminal emulating dcc chat */
1127 if (!backgrd && term_z) {
1128 int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
1129
1130 getvhost(&dcc[n].sockname, AF_INET);
1131 dcc[n].sock = STDOUT;
1132 dcc[n].timeval = now;
1133 dcc[n].u.chat->con_flags = conmask;
1134 dcc[n].u.chat->strip_flags = STRIP_ALL;
1135 dcc[n].status = STAT_ECHO;
1136 strcpy(dcc[n].nick, "HQ");
1137 strcpy(dcc[n].host, "llama@console");
1138 /* HACK: Workaround not to pass literal "HQ" as a non-const arg */
1139 dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
1140 /* Make sure there's an innocuous HQ user if needed */
1141 if (!dcc[n].user) {
1142 userlist = adduser(userlist, dcc[n].nick, "none", "-", USER_PARTY);
1143 dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
1144 }
1145 setsock(STDOUT, 0); /* Entry in net table */
1146 dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
1147 dcc_chatter(n);
1148 }
1149
1150 then = now;
1151 online_since = now;
1152 autolink_cycle(NULL); /* Hurry and connect to tandem bots */
1153 add_help_reference("cmds1.help");
1154 add_help_reference("cmds2.help");
1155 add_help_reference("core.help");
1156 add_hook(HOOK_SECONDLY, (Function) core_secondly);
1157 add_hook(HOOK_MINUTELY, (Function) core_minutely);
1158 add_hook(HOOK_HOURLY, (Function) core_hourly);
1159 add_hook(HOOK_REHASH, (Function) event_rehash);
1160 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
1161 add_hook(HOOK_USERFILE, (Function) event_save);
1162 add_hook(HOOK_BACKUP, (Function) backup_userfile);
1163 add_hook(HOOK_DAILY, (Function) event_logfile);
1164 add_hook(HOOK_DAILY, (Function) event_resettraffic);
1165 add_hook(HOOK_LOADED, (Function) event_loaded);
1166
1167 call_hook(HOOK_LOADED);
1168
1169 debug0("main: entering loop");
1170 while (1) {
1171 mainloop(1);
1172 }
1173 }

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