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

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Revision 1.71 - (show annotations) (download) (as text)
Thu Jul 26 17:04:33 2001 UTC (17 years, 11 months ago) by drummer
Branch: MAIN
Changes since 1.70: +4 -2 lines
File MIME type: text/x-chdr
added adns dir

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 1.70 2001/07/25 04:21:07 guppy Exp $
9 */
10 /*
11 * Copyright (C) 1997 Robey Pointer
12 * Copyright (C) 1999, 2000, 2001 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 #include <fcntl.h>
36 #include <time.h>
37 #include <errno.h>
38 #include <signal.h>
39 #include <netdb.h>
40 #include <setjmp.h>
41
42 #ifdef STOP_UAC /* osf/1 complains a lot */
43 #include <sys/sysinfo.h>
44 #define UAC_NOPRINT 0x00000001 /* Don't report unaligned fixups */
45 #endif
46 /* Some systems have a working sys/wait.h even though configure will
47 * decide it's not bsd compatable. Oh well.
48 */
49
50 #include "chan.h"
51 #include "modules.h"
52 #include "tandem.h"
53 #include "bg.h"
54
55 #include "adns/adns.h"
56
57 #ifdef CYGWIN_HACKS
58 #include <windows.h>
59 #endif
60
61 #ifndef _POSIX_SOURCE
62 /* Solaris needs this */
63 #define _POSIX_SOURCE 1
64 #endif
65
66 extern char origbotname[], userfile[], botnetnick[];
67 extern int dcc_total, conmask, cache_hit, cache_miss,
68 max_logs, quick_logs;
69 extern struct dcc_t *dcc;
70 extern struct userrec *userlist;
71 extern struct chanset_t *chanset;
72 extern log_t *logs;
73 extern Tcl_Interp *interp;
74 extern tcl_timer_t *timer,
75 *utimer;
76 extern jmp_buf alarmret;
77
78
79 /*
80 * Please use the PATCH macro instead of directly altering the version
81 * string from now on (it makes it much easier to maintain patches).
82 * Also please read the README file regarding your rights to distribute
83 * modified versions of this bot.
84 */
85
86 char egg_version[1024] = "1.7.0";
87 int egg_numver = 1070000;
88
89 char notify_new[121] = ""; /* Person to send a note to for new users */
90 int default_flags = 0; /* Default user flags and */
91 int default_uflags = 0; /* Default userdefinied flags for people
92 who say 'hello' or for .adduser */
93
94 int backgrd = 1; /* Run in the background? */
95 int con_chan = 0; /* Foreground: constantly display channel
96 stats? */
97 int term_z = 0; /* Foreground: use the terminal as a party
98 line? */
99 char configfile[121] = "eggdrop.conf"; /* Name of the config file */
100 char helpdir[121]; /* Directory of help files (if used) */
101 char textdir[121] = ""; /* Directory for text files that get dumped */
102 int keep_all_logs = 0; /* Never erase logfiles, no matter how old
103 they are? */
104 char logfile_suffix[21] = ".%d%b%Y"; /* Format of logfile suffix. */
105 time_t online_since; /* Unix-time that the bot loaded up */
106 int make_userfile = 0; /* Using bot in make-userfile mode? (first
107 user to 'hello' becomes master) */
108 char owner[121] = ""; /* Permanent owner(s) of the bot */
109 char pid_file[HANDLEN + 5]; /* Name of the file for the pid to be
110 stored in */
111 int save_users_at = 0; /* How many minutes past the hour to
112 save the userfile? */
113 int notify_users_at = 0; /* How many minutes past the hour to
114 notify users of notes? */
115 int switch_logfiles_at = 300; /* When (military time) to switch logfiles */
116 char version[81]; /* Version info (long form) */
117 char ver[41]; /* Version info (short form) */
118 char egg_xtra[2048]; /* Patch info */
119 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
120 int do_restart = 0; /* .restart has been called, restart asap */
121 int die_on_sighup = 0; /* die if bot receives SIGHUP */
122 int die_on_sigterm = 1; /* die if bot receives SIGTERM */
123 int resolve_timeout = 15; /* hostname/address lookup timeout */
124 time_t now; /* duh, now :) */
125
126 /* Traffic stats
127 */
128 unsigned long otraffic_irc = 0;
129 unsigned long otraffic_irc_today = 0;
130 unsigned long otraffic_bn = 0;
131 unsigned long otraffic_bn_today = 0;
132 unsigned long otraffic_dcc = 0;
133 unsigned long otraffic_dcc_today = 0;
134 unsigned long otraffic_filesys = 0;
135 unsigned long otraffic_filesys_today = 0;
136 unsigned long otraffic_trans = 0;
137 unsigned long otraffic_trans_today = 0;
138 unsigned long otraffic_unknown = 0;
139 unsigned long otraffic_unknown_today = 0;
140 unsigned long itraffic_irc = 0;
141 unsigned long itraffic_irc_today = 0;
142 unsigned long itraffic_bn = 0;
143 unsigned long itraffic_bn_today = 0;
144 unsigned long itraffic_dcc = 0;
145 unsigned long itraffic_dcc_today = 0;
146 unsigned long itraffic_trans = 0;
147 unsigned long itraffic_trans_today = 0;
148 unsigned long itraffic_unknown = 0;
149 unsigned long itraffic_unknown_today = 0;
150
151 #ifdef DEBUG_CONTEXT
152 /* Context storage for fatal crashes */
153 char cx_file[16][30];
154 char cx_note[16][256];
155 int cx_line[16];
156 int cx_ptr = 0;
157 #endif
158
159
160 void fatal(const char *s, int recoverable)
161 {
162 int i;
163
164 putlog(LOG_MISC, "*", "* %s", s);
165 flushlogs();
166 for (i = 0; i < dcc_total; i++)
167 if (dcc[i].sock >= 0)
168 killsock(dcc[i].sock);
169 unlink(pid_file);
170 if (!recoverable) {
171 bg_send_quit(BG_ABORT);
172 exit(1);
173 }
174 }
175
176
177 int expmem_chanprog(), expmem_users(), expmem_misc(), expmem_dccutil(),
178 expmem_botnet(), expmem_tcl(), expmem_tclhash(), expmem_net(),
179 expmem_modules(int), expmem_language(), expmem_tcldcc();
180
181 /* For mem.c : calculate memory we SHOULD be using
182 */
183 int expected_memory(void)
184 {
185 int tot;
186
187 tot = expmem_chanprog() + expmem_users() + expmem_misc() +
188 expmem_dccutil() + expmem_botnet() + expmem_tcl() + expmem_tclhash() +
189 expmem_net() + expmem_modules(0) + expmem_language() + expmem_tcldcc();
190 return tot;
191 }
192
193 static void check_expired_dcc()
194 {
195 int i;
196
197 for (i = 0; i < dcc_total; i++)
198 if (dcc[i].type && dcc[i].type->timeout_val &&
199 ((now - dcc[i].timeval) > *(dcc[i].type->timeout_val))) {
200 if (dcc[i].type->timeout)
201 dcc[i].type->timeout(i);
202 else if (dcc[i].type->eof)
203 dcc[i].type->eof(i);
204 else
205 continue;
206 /* Only timeout 1 socket per cycle, too risky for more */
207 return;
208 }
209 }
210
211 #ifdef DEBUG_CONTEXT
212 static int nested_debug = 0;
213
214 void write_debug()
215 {
216 int x;
217 char s[25];
218 int y;
219
220 if (nested_debug) {
221 /* Yoicks, if we have this there's serious trouble!
222 * All of these are pretty reliable, so we'll try these.
223 *
224 * NOTE: dont try and display context-notes in here, it's
225 * _not_ safe <cybah>
226 */
227 x = creat("DEBUG.DEBUG", 0644);
228 setsock(x, SOCK_NONSOCK);
229 if (x >= 0) {
230 strncpyz(s, ctime(&now), sizeof s);
231 dprintf(-x, "Debug (%s) written %s\n", ver, s);
232 dprintf(-x, "Please report problem to bugs@eggheads.org\n");
233 dprintf(-x, "after a visit to http://www.eggheads.org/bugzilla/\n");
234 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
235 dprintf(-x, "Context: ");
236 cx_ptr = cx_ptr & 15;
237 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
238 dprintf(-x, "%s/%d,\n ", cx_file[y], cx_line[y]);
239 dprintf(-x, "%s/%d\n\n", cx_file[y], cx_line[y]);
240 killsock(x);
241 close(x);
242 }
243 bg_send_quit(BG_ABORT);
244 exit(1); /* Dont even try & tell people about, that may
245 have caused the fault last time. */
246 } else
247 nested_debug = 1;
248 putlog(LOG_MISC, "*", "* Last context: %s/%d [%s]", cx_file[cx_ptr],
249 cx_line[cx_ptr], cx_note[cx_ptr][0] ? cx_note[cx_ptr] : "");
250 putlog(LOG_MISC, "*", "* Please REPORT this BUG!");
251 putlog(LOG_MISC, "*", "* Check doc/BUG-REPORT on how to do so.");
252 x = creat("DEBUG", 0644);
253 setsock(x, SOCK_NONSOCK);
254 if (x < 0) {
255 putlog(LOG_MISC, "*", "* Failed to write DEBUG");
256 } else {
257 strncpyz(s, ctime(&now), sizeof s);
258 dprintf(-x, "Debug (%s) written %s\n", ver, s);
259 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
260 #ifdef STATIC
261 dprintf(-x, "STATICALLY LINKED\n");
262 #endif
263
264 /* info library */
265 dprintf(-x, "TCL library: %s\n",
266 ((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
267 interp->result : "*unknown*");
268
269 /* info tclversion */
270 dprintf(-x, "TCL version: %s (header version %s)\n",
271 ((interp) && (Tcl_Eval(interp, "info tclversion") == TCL_OK)) ?
272 interp->result : "*unknown*", TCL_VERSION);
273
274 /* info patchlevel */
275 dprintf(-x, "TCL patchlevel: %s (header patchlevel %s)\n",
276 ((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
277 interp->result : "*unknown*",
278 TCL_PATCH_LEVEL ? TCL_PATCH_LEVEL : "*unknown*");
279
280 #if HAVE_TCL_THREADS
281 dprintf(-x, "TCL is threaded\n");
282 #else
283 dprintf(-x, "TCL isn't threaded\n");
284 #endif
285
286 #ifdef CCFLAGS
287 dprintf(-x, "Compile flags: %s\n", CCFLAGS);
288 #endif
289 #ifdef LDFLAGS
290 dprintf(-x, "Link flags: %s\n", LDFLAGS);
291 #endif
292 #ifdef STRIPFLAGS
293 dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
294 #endif
295
296 dprintf(-x, "Context: ");
297 cx_ptr = cx_ptr & 15;
298 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
299 dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
300 (cx_note[y][0]) ? cx_note[y] : "");
301 dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
302 (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
303 tell_dcc(-x);
304 dprintf(-x, "\n");
305 debug_mem_to_dcc(-x);
306 killsock(x);
307 close(x);
308 putlog(LOG_MISC, "*", "* Wrote DEBUG");
309 }
310 }
311 #endif
312
313 static void got_bus(int z)
314 {
315 #ifdef DEBUG_CONTEXT
316 write_debug();
317 #endif
318 fatal("BUS ERROR -- CRASHING!", 1);
319 #ifdef SA_RESETHAND
320 kill(getpid(), SIGBUS);
321 #else
322 bg_send_quit(BG_ABORT);
323 exit(1);
324 #endif
325 }
326
327 static void got_segv(int z)
328 {
329 #ifdef DEBUG_CONTEXT
330 write_debug();
331 #endif
332 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
333 #ifdef SA_RESETHAND
334 kill(getpid(), SIGSEGV);
335 #else
336 bg_send_quit(BG_ABORT);
337 exit(1);
338 #endif
339 }
340
341 static void got_fpe(int z)
342 {
343 #ifdef DEBUG_CONTEXT
344 write_debug();
345 #endif
346 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
347 }
348
349 static void got_term(int z)
350 {
351 write_userfile(-1);
352 check_tcl_event("sigterm");
353 if (die_on_sigterm) {
354 botnet_send_chat(-1, botnetnick, "ACK, I've been terminated!");
355 fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
356 } else {
357 putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
358 }
359 }
360
361 static void got_quit(int z)
362 {
363 check_tcl_event("sigquit");
364 putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
365 return;
366 }
367
368 static void got_hup(int z)
369 {
370 write_userfile(-1);
371 check_tcl_event("sighup");
372 if (die_on_sighup) {
373 fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
374 } else
375 putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
376 do_restart = -2;
377 return;
378 }
379
380 /* A call to resolver (gethostbyname, etc) timed out
381 */
382 static void got_alarm(int z)
383 {
384 longjmp(alarmret, 1);
385
386 /* -Never reached- */
387 }
388
389 /* Got ILL signal -- log context and continue
390 */
391 static void got_ill(int z)
392 {
393 check_tcl_event("sigill");
394 #ifdef DEBUG_CONTEXT
395 putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
396 cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
397 #endif
398 }
399
400 #ifdef DEBUG_CONTEXT
401 /* Context */
402 void eggContext(const char *file, int line, const char *module)
403 {
404 char x[31], *p;
405
406 p = strrchr(file, '/');
407 if (!module) {
408 strncpyz(x, p ? p + 1 : file, sizeof x);
409 } else
410 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
411 cx_ptr = ((cx_ptr + 1) & 15);
412 strcpy(cx_file[cx_ptr], x);
413 cx_line[cx_ptr] = line;
414 cx_note[cx_ptr][0] = 0;
415 }
416
417 /* Called from the ContextNote macro.
418 */
419 void eggContextNote(const char *file, int line, const char *module,
420 const char *note)
421 {
422 char x[31], *p;
423
424 p = strrchr(file, '/');
425 if (!module) {
426 strncpyz(x, p ? p + 1 : file, sizeof x);
427 } else
428 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
429 cx_ptr = ((cx_ptr + 1) & 15);
430 strcpy(cx_file[cx_ptr], x);
431 cx_line[cx_ptr] = line;
432 strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
433 }
434 #endif
435
436 #ifdef DEBUG_ASSERT
437 /* Called from the Assert macro.
438 */
439 void eggAssert(const char *file, int line, const char *module)
440 {
441 #ifdef DEBUG_CONTEXT
442 write_debug();
443 #endif
444 if (!module)
445 putlog(LOG_MISC, "*", "* In file %s, line %u", file, line);
446 else
447 putlog(LOG_MISC, "*", "* In file %s:%s, line %u", module, file, line);
448 fatal("ASSERT FAILED -- CRASHING!", 1);
449 }
450 #endif
451
452 static void do_arg(char *s)
453 {
454 char x[1024], *z = x;
455 int i;
456
457 if (s[0] == '-')
458 for (i = 1; i < strlen(s); i++) {
459 switch (s[i]) {
460 case 'n':
461 backgrd = 0;
462 break;
463 case 'c':
464 con_chan = 1;
465 term_z = 0;
466 break;
467 case 't':
468 con_chan = 0;
469 term_z = 1;
470 break;
471 case 'm':
472 make_userfile = 1;
473 break;
474 case 'v':
475 strncpyz(x, egg_version, sizeof x);
476 newsplit(&z);
477 newsplit(&z);
478 printf("%s\n", version);
479 if (z[0])
480 printf(" (patches: %s)\n", z);
481 bg_send_quit(BG_ABORT);
482 exit(0);
483 break; /* this should never be reached */
484 case 'h':
485 printf("\n%s\n\n", version);
486 printf(EGG_USAGE);
487 printf("\n");
488 bg_send_quit(BG_ABORT);
489 exit(0);
490 break; /* this should never be reached */
491 }
492 } else
493 strncpyz(configfile, s, sizeof configfile);
494 }
495
496 void backup_userfile(void)
497 {
498 char s[125];
499
500 putlog(LOG_MISC, "*", USERF_BACKUP);
501 egg_snprintf(s, sizeof s, "%s~bak", userfile);
502 copyfile(userfile, s);
503 }
504
505 /* Timer info */
506 static int lastmin = 99;
507 static time_t then;
508 static struct tm nowtm;
509
510 /* Called once a second.
511 *
512 * Note: Try to not put any Context lines in here (guppy 21Mar2000).
513 */
514 static void core_secondly()
515 {
516 static int cnt = 0;
517 int miltime;
518
519 do_check_timers(&utimer); /* Secondly timers */
520 cnt++;
521 if (cnt >= 10) { /* Every 10 seconds */
522 cnt = 0;
523 check_expired_dcc();
524 if (con_chan && !backgrd) {
525 dprintf(DP_STDOUT, "\033[2J\033[1;1H");
526 tell_verbose_status(DP_STDOUT);
527 do_module_report(DP_STDOUT, 0, "server");
528 do_module_report(DP_STDOUT, 0, "channels");
529 tell_mem_status_dcc(DP_STDOUT);
530 }
531 }
532 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
533 if (nowtm.tm_min != lastmin) {
534 int i = 0;
535
536 /* Once a minute */
537 lastmin = (lastmin + 1) % 60;
538 call_hook(HOOK_MINUTELY);
539 check_expired_ignores();
540 autolink_cycle(NULL); /* Attempt autolinks */
541 /* In case for some reason more than 1 min has passed: */
542 while (nowtm.tm_min != lastmin) {
543 /* Timer drift, dammit */
544 debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
545 i++;
546 lastmin = (lastmin + 1) % 60;
547 call_hook(HOOK_MINUTELY);
548 }
549 if (i > 1)
550 putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
551 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
552 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
553 call_hook(HOOK_5MINUTELY);
554 check_botnet_pings();
555 if (!quick_logs) {
556 flushlogs();
557 check_logsize();
558 }
559 if (!miltime) { /* At midnight */
560 char s[25];
561 int j;
562
563 strncpyz(s, ctime(&now), sizeof s);
564 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
565 call_hook(HOOK_BACKUP);
566 for (j = 0; j < max_logs; j++) {
567 if (logs[j].filename != NULL && logs[j].f != NULL) {
568 fclose(logs[j].f);
569 logs[j].f = NULL;
570 }
571 }
572 }
573 }
574 if (nowtm.tm_min == notify_users_at)
575 call_hook(HOOK_HOURLY);
576 /* These no longer need checking since they are all check vs minutely
577 * settings and we only get this far on the minute.
578 */
579 if (miltime == switch_logfiles_at) {
580 call_hook(HOOK_DAILY);
581 if (!keep_all_logs) {
582 putlog(LOG_MISC, "*", MISC_LOGSWITCH);
583 for (i = 0; i < max_logs; i++)
584 if (logs[i].filename) {
585 char s[1024];
586
587 if (logs[i].f) {
588 fclose(logs[i].f);
589 logs[i].f = NULL;
590 }
591 egg_snprintf(s, sizeof s, "%s.yesterday", logs[i].filename);
592 unlink(s);
593 movefile(logs[i].filename, s);
594 }
595 }
596 }
597 }
598 }
599
600 static void core_minutely()
601 {
602 check_tcl_time(&nowtm);
603 do_check_timers(&timer);
604 if (quick_logs != 0) {
605 flushlogs();
606 check_logsize();
607 }
608 }
609
610 static void core_hourly()
611 {
612 write_userfile(-1);
613 }
614
615 static void event_rehash()
616 {
617 check_tcl_event("rehash");
618 }
619
620 static void event_prerehash()
621 {
622 check_tcl_event("prerehash");
623 }
624
625 static void event_save()
626 {
627 check_tcl_event("save");
628 }
629
630 static void event_logfile()
631 {
632 check_tcl_event("logfile");
633 }
634
635 static void event_resettraffic()
636 {
637 otraffic_irc += otraffic_irc_today;
638 itraffic_irc += itraffic_irc_today;
639 otraffic_bn += otraffic_bn_today;
640 itraffic_bn += itraffic_bn_today;
641 otraffic_dcc += otraffic_dcc_today;
642 itraffic_dcc += itraffic_dcc_today;
643 otraffic_unknown += otraffic_unknown_today;
644 itraffic_unknown += itraffic_unknown_today;
645 otraffic_trans += otraffic_trans_today;
646 itraffic_trans += itraffic_trans_today;
647 otraffic_irc_today = otraffic_bn_today = 0;
648 otraffic_dcc_today = otraffic_unknown_today = 0;
649 itraffic_irc_today = itraffic_bn_today = 0;
650 itraffic_dcc_today = itraffic_unknown_today = 0;
651 itraffic_trans_today = otraffic_trans_today = 0;
652 }
653
654 static void event_loaded()
655 {
656 check_tcl_event("loaded");
657 }
658
659 void kill_tcl();
660 extern module_entry *module_list;
661 void restart_chons();
662
663 #ifdef STATIC
664 void check_static(char *, char *(*)());
665
666 #include "mod/static.h"
667 #endif
668 int init_mem(), init_dcc_max(), init_userent(), init_misc(), init_bots(),
669 init_net(), init_modules(), init_tcl(int, char **),
670 init_language(int);
671
672 void patch(const char *str)
673 {
674 char *p = strchr(egg_version, '+');
675
676 if (!p)
677 p = &egg_version[strlen(egg_version)];
678 sprintf(p, "+%s", str);
679 egg_numver++;
680 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
681 }
682
683 static inline void garbage_collect(void)
684 {
685 static u_8bit_t run_cnt = 0;
686
687 if (run_cnt == 3)
688 garbage_collect_tclhash();
689 else
690 run_cnt++;
691 }
692
693 int main(int argc, char **argv)
694 {
695 int xx, i;
696 char buf[520], s[25];
697 FILE *f;
698 struct sigaction sv;
699 struct chanset_t *chan;
700
701 #ifdef DEBUG_MEM
702 /* Make sure it can write core, if you make debug. Else it's pretty
703 * useless (dw)
704 */
705 {
706 #include <sys/resource.h>
707 struct rlimit cdlim;
708
709 cdlim.rlim_cur = RLIM_INFINITY;
710 cdlim.rlim_max = RLIM_INFINITY;
711 setrlimit(RLIMIT_CORE, &cdlim);
712 }
713 #endif
714
715 /* Initialise context list */
716 for (i = 0; i < 16; i++)
717 Context;
718
719 #include "patch.h"
720 /* Version info! */
721 egg_snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
722 egg_snprintf(version, sizeof version, "Eggdrop v%s (C)1997 Robey Pointer (C)2001 Eggheads",
723 egg_version);
724 /* Now add on the patchlevel (for Tcl) */
725 sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
726 strcat(egg_version, egg_xtra);
727 #ifdef STOP_UAC
728 {
729 int nvpair[2];
730
731 nvpair[0] = SSIN_UACPROC;
732 nvpair[1] = UAC_NOPRINT;
733 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
734 }
735 #endif
736
737 /* Set up error traps: */
738 sv.sa_handler = got_bus;
739 sigemptyset(&sv.sa_mask);
740 #ifdef SA_RESETHAND
741 sv.sa_flags = SA_RESETHAND;
742 #else
743 sv.sa_flags = 0;
744 #endif
745 sigaction(SIGBUS, &sv, NULL);
746 sv.sa_handler = got_segv;
747 sigaction(SIGSEGV, &sv, NULL);
748 #ifdef SA_RESETHAND
749 sv.sa_flags = 0;
750 #endif
751 sv.sa_handler = got_fpe;
752 sigaction(SIGFPE, &sv, NULL);
753 sv.sa_handler = got_term;
754 sigaction(SIGTERM, &sv, NULL);
755 sv.sa_handler = got_hup;
756 sigaction(SIGHUP, &sv, NULL);
757 sv.sa_handler = got_quit;
758 sigaction(SIGQUIT, &sv, NULL);
759 sv.sa_handler = SIG_IGN;
760 sigaction(SIGPIPE, &sv, NULL);
761 sv.sa_handler = got_ill;
762 sigaction(SIGILL, &sv, NULL);
763 sv.sa_handler = got_alarm;
764 sigaction(SIGALRM, &sv, NULL);
765
766 /* Initialize variables and stuff */
767 now = time(NULL);
768 chanset = NULL;
769 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
770 lastmin = nowtm.tm_min;
771 srandom(now % (getpid() + getppid()));
772 init_mem();
773 init_language(1);
774 if (argc > 1)
775 for (i = 1; i < argc; i++)
776 do_arg(argv[i]);
777 printf("\n%s\n", version);
778
779 /* Don't allow eggdrop to run as root */
780 if (((int) getuid() == 0) || ((int) geteuid() == 0))
781 fatal("ERROR: Eggdrop will not run as root!", 0);
782
783 init_dcc_max();
784 init_userent();
785 init_misc();
786 init_bots();
787 init_net();
788 init_modules();
789 if (backgrd)
790 bg_prepare_split();
791 init_tcl(argc, argv);
792 init_language(0);
793 #ifdef STATIC
794 link_statics();
795 #endif
796 strncpyz(s, ctime(&now), sizeof s);
797 strcpy(&s[11], &s[20]);
798 putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
799 chanprog();
800 if (!encrypt_pass) {
801 printf(MOD_NOCRYPT);
802 bg_send_quit(BG_ABORT);
803 exit(1);
804 }
805 i = 0;
806 for (chan = chanset; chan; chan = chan->next)
807 i++;
808 putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
809 botnetnick, i, count_users(userlist));
810 cache_miss = 0;
811 cache_hit = 0;
812 egg_snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
813
814 /* Check for pre-existing eggdrop! */
815 f = fopen(pid_file, "r");
816 if (f != NULL) {
817 fgets(s, 10, f);
818 xx = atoi(s);
819 kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
820 is used */
821 if (errno != ESRCH) {
822 printf(EGG_RUNNING1, origbotname);
823 printf(EGG_RUNNING2, pid_file);
824 bg_send_quit(BG_ABORT);
825 exit(1);
826 }
827 }
828
829 /* Move into background? */
830 if (backgrd) {
831 #ifndef CYGWIN_HACKS
832 bg_do_split();
833 } else { /* !backgrd */
834 #endif
835 xx = getpid();
836 if (xx != 0) {
837 FILE *fp;
838
839 /* Write pid to file */
840 unlink(pid_file);
841 fp = fopen(pid_file, "w");
842 if (fp != NULL) {
843 fprintf(fp, "%u\n", xx);
844 if (fflush(fp)) {
845 /* Let the bot live since this doesn't appear to be a botchk */
846 printf(EGG_NOWRITE, pid_file);
847 fclose(fp);
848 unlink(pid_file);
849 } else
850 fclose(fp);
851 } else
852 printf(EGG_NOWRITE, pid_file);
853 #ifdef CYGWIN_HACKS
854 printf("Launched into the background (pid: %d)\n\n", xx);
855 #endif
856 }
857 }
858
859 use_stderr = 0; /* Stop writing to stderr now */
860 if (backgrd) {
861 /* Ok, try to disassociate from controlling terminal (finger cross) */
862 #if HAVE_SETPGID && !defined(CYGWIN_HACKS)
863 setpgid(0, 0);
864 #endif
865 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
866 freopen("/dev/null", "r", stdin);
867 freopen("/dev/null", "w", stdout);
868 freopen("/dev/null", "w", stderr);
869 #ifdef CYGWIN_HACKS
870 FreeConsole();
871 #endif
872 }
873
874 /* Terminal emulating dcc chat */
875 if (!backgrd && term_z) {
876 int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
877
878 dcc[n].addr[0] = '\0';
879 dcc[n].sock = STDOUT;
880 dcc[n].timeval = now;
881 dcc[n].u.chat->con_flags = conmask;
882 dcc[n].u.chat->strip_flags = STRIP_ALL;
883 dcc[n].status = STAT_ECHO;
884 strcpy(dcc[n].nick, "HQ");
885 strcpy(dcc[n].host, "llama@console");
886 dcc[n].user = get_user_by_handle(userlist, "HQ");
887 /* Make sure there's an innocuous HQ user if needed */
888 if (!dcc[n].user) {
889 userlist = adduser(userlist, "HQ", "none", "-", USER_PARTY);
890 dcc[n].user = get_user_by_handle(userlist, "HQ");
891 }
892 setsock(STDOUT, 0); /* Entry in net table */
893 dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
894 dcc_chatter(n);
895 }
896
897 then = now;
898 online_since = now;
899 autolink_cycle(NULL); /* Hurry and connect to tandem bots */
900 add_help_reference("cmds1.help");
901 add_help_reference("cmds2.help");
902 add_help_reference("core.help");
903 add_hook(HOOK_SECONDLY, (Function) core_secondly);
904 add_hook(HOOK_MINUTELY, (Function) core_minutely);
905 add_hook(HOOK_HOURLY, (Function) core_hourly);
906 add_hook(HOOK_REHASH, (Function) event_rehash);
907 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
908 add_hook(HOOK_USERFILE, (Function) event_save);
909 add_hook(HOOK_BACKUP, (Function) backup_userfile);
910 add_hook(HOOK_DAILY, (Function) event_logfile);
911 add_hook(HOOK_DAILY, (Function) event_resettraffic);
912 add_hook(HOOK_LOADED, (Function) event_loaded);
913
914 call_hook(HOOK_LOADED);
915
916 debug0("main: entering loop");
917 while (1) {
918 int socket_cleanup = 0;
919
920 #if !defined(HAVE_PRE7_5_TCL)
921 /* Process a single tcl event */
922 Tcl_DoOneEvent(TCL_ALL_EVENTS | TCL_DONT_WAIT);
923 #endif
924
925 /* Lets move some of this here, reducing the numer of actual
926 * calls to periodic_timers
927 */
928 now = time(NULL);
929 random(); /* Woop, lets really jumble things */
930 if (now != then) { /* Once a second */
931 call_hook(HOOK_SECONDLY);
932 then = now;
933 }
934
935 /* Only do this every so often. */
936 if (!socket_cleanup) {
937 socket_cleanup = 5;
938
939 /* Remove dead dcc entries. */
940 dcc_remove_lost();
941
942 /* Check for server or dcc activity. */
943 dequeue_sockets();
944 } else
945 socket_cleanup--;
946
947 /* Free unused structures. */
948 garbage_collect();
949
950 xx = sockgets(buf, &i);
951 if (xx >= 0) { /* Non-error */
952 int idx;
953
954 for (idx = 0; idx < dcc_total; idx++)
955 if (dcc[idx].sock == xx) {
956 if (dcc[idx].type && dcc[idx].type->activity) {
957 /* Traffic stats */
958 if (dcc[idx].type->name) {
959 if (!strncmp(dcc[idx].type->name, "BOT", 3))
960 itraffic_bn_today += strlen(buf) + 1;
961 else if (!strcmp(dcc[idx].type->name, "SERVER"))
962 itraffic_irc_today += strlen(buf) + 1;
963 else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
964 itraffic_dcc_today += strlen(buf) + 1;
965 else if (!strncmp(dcc[idx].type->name, "FILES", 5))
966 itraffic_dcc_today += strlen(buf) + 1;
967 else if (!strcmp(dcc[idx].type->name, "SEND"))
968 itraffic_trans_today += strlen(buf) + 1;
969 else if (!strncmp(dcc[idx].type->name, "GET", 3))
970 itraffic_trans_today += strlen(buf) + 1;
971 else
972 itraffic_unknown_today += strlen(buf) + 1;
973 }
974 dcc[idx].type->activity(idx, buf, i);
975 } else
976 putlog(LOG_MISC, "*",
977 "!!! untrapped dcc activity: type %s, sock %d",
978 dcc[idx].type->name, dcc[idx].sock);
979 break;
980 }
981 } else if (xx == -1) { /* EOF from someone */
982 int idx;
983
984 if (i == STDOUT && !backgrd)
985 fatal("END OF FILE ON TERMINAL", 0);
986 for (idx = 0; idx < dcc_total; idx++)
987 if (dcc[idx].sock == i) {
988 if (dcc[idx].type && dcc[idx].type->eof)
989 dcc[idx].type->eof(idx);
990 else {
991 putlog(LOG_MISC, "*",
992 "*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
993 i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
994 killsock(i);
995 lostdcc(idx);
996 }
997 idx = dcc_total + 1;
998 }
999 if (idx == dcc_total) {
1000 putlog(LOG_MISC, "*",
1001 "(@) EOF socket %d, not a dcc socket, not anything.", i);
1002 close(i);
1003 killsock(i);
1004 }
1005 } else if (xx == -2 && errno != EINTR) { /* select() error */
1006 putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
1007 for (i = 0; i < dcc_total; i++) {
1008 if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno = EBADF)) {
1009 putlog(LOG_MISC, "*",
1010 "DCC socket %d (type %d, name '%s') expired -- pfft",
1011 dcc[i].sock, dcc[i].type, dcc[i].nick);
1012 killsock(dcc[i].sock);
1013 lostdcc(i);
1014 i--;
1015 }
1016 }
1017 } else if (xx == -3) {
1018 call_hook(HOOK_IDLE);
1019 socket_cleanup = 0; /* If we've been idle, cleanup & flush */
1020 }
1021
1022 if (do_restart) {
1023 if (do_restart == -2)
1024 rehash();
1025 else {
1026 /* Unload as many modules as possible */
1027 int f = 1;
1028 module_entry *p;
1029 Function x;
1030 char xx[256];
1031
1032 /* oops, I guess we should call this event before tcl is restarted */
1033 check_tcl_event("prerestart");
1034
1035 while (f) {
1036 f = 0;
1037 for (p = module_list; p != NULL; p = p->next) {
1038 dependancy *d = dependancy_list;
1039 int ok = 1;
1040
1041 while (ok && d) {
1042 if (d->needed == p)
1043 ok = 0;
1044 d = d->next;
1045 }
1046 if (ok) {
1047 strcpy(xx, p->name);
1048 if (module_unload(xx, origbotname) == NULL) {
1049 f = 1;
1050 break;
1051 }
1052 }
1053 }
1054 }
1055 p = module_list;
1056 if (p && p->next && p->next->next)
1057 /* Should be only 2 modules now - blowfish (or some other
1058 encryption module) and eggdrop. */
1059 putlog(LOG_MISC, "*", MOD_STAGNANT);
1060 flushlogs();
1061 kill_tcl();
1062 init_tcl(argc, argv);
1063 init_language(0);
1064 /* We expect the encryption module as the current module pointed
1065 * to by `module_list'.
1066 */
1067 x = p->funcs[MODCALL_START];
1068 /* `NULL' indicates that we just recently restarted. The module
1069 * is expected to re-initialise as needed.
1070 */
1071 x(NULL);
1072 rehash();
1073 restart_chons();
1074 call_hook(HOOK_LOADED);
1075 }
1076 do_restart = 0;
1077 }
1078 }
1079 }

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