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

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Revision 1.77 - (show annotations) (download) (as text)
Thu Sep 20 19:50:19 2001 UTC (17 years, 11 months ago) by stdarg
Branch: MAIN
Changes since 1.76: +12 -2 lines
File MIME type: text/x-chdr
STill removing tcl from the bind table.
Created first non-tcl bind entry ("event") and bind2/unbind2.

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 1.76 2001/08/21 00:21:17 ite 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 #include <locale.h>
43
44 #ifdef STOP_UAC /* osf/1 complains a lot */
45 #include <sys/sysinfo.h>
46 #define UAC_NOPRINT 0x00000001 /* Don't report unaligned fixups */
47 #endif
48 /* Some systems have a working sys/wait.h even though configure will
49 * decide it's not bsd compatable. Oh well.
50 */
51
52 #include "chan.h"
53 #include "modules.h"
54 #include "tandem.h"
55 #include "bg.h"
56
57 #include "adns/adns.h"
58
59 #ifdef CYGWIN_HACKS
60 #include <windows.h>
61 #endif
62
63 #ifndef _POSIX_SOURCE
64 /* Solaris needs this */
65 #define _POSIX_SOURCE 1
66 #endif
67
68 extern char origbotname[], userfile[], botnetnick[];
69 extern int dcc_total, conmask, cache_hit, cache_miss,
70 max_logs, quick_logs;
71 extern struct dcc_t *dcc;
72 extern struct userrec *userlist;
73 extern struct chanset_t *chanset;
74 extern log_t *logs;
75 extern Tcl_Interp *interp;
76 extern tcl_timer_t *timer,
77 *utimer;
78 extern jmp_buf alarmret;
79
80
81 /*
82 * Please use the PATCH macro instead of directly altering the version
83 * string from now on (it makes it much easier to maintain patches).
84 * Also please read the README file regarding your rights to distribute
85 * modified versions of this bot.
86 */
87
88 char egg_version[1024] = VERSION;
89 int egg_numver = VERSION_NUM;
90
91 char notify_new[121] = ""; /* Person to send a note to for new users */
92 int default_flags = 0; /* Default user flags and */
93 int default_uflags = 0; /* Default userdefinied flags for people
94 who say 'hello' or for .adduser */
95
96 int backgrd = 1; /* Run in the background? */
97 int con_chan = 0; /* Foreground: constantly display channel
98 stats? */
99 int term_z = 0; /* Foreground: use the terminal as a party
100 line? */
101 char configfile[121] = "eggdrop.conf"; /* Name of the config file */
102 char helpdir[121]; /* Directory of help files (if used) */
103 char textdir[121] = ""; /* Directory for text files that get dumped */
104 int keep_all_logs = 0; /* Never erase logfiles, no matter how old
105 they are? */
106 char logfile_suffix[21] = ".%d%b%Y"; /* Format of logfile suffix. */
107 time_t online_since; /* Unix-time that the bot loaded up */
108 int make_userfile = 0; /* Using bot in make-userfile mode? (first
109 user to 'hello' becomes master) */
110 char owner[121] = ""; /* Permanent owner(s) of the bot */
111 char pid_file[HANDLEN + 5]; /* Name of the file for the pid to be
112 stored in */
113 int save_users_at = 0; /* How many minutes past the hour to
114 save the userfile? */
115 int notify_users_at = 0; /* How many minutes past the hour to
116 notify users of notes? */
117 int switch_logfiles_at = 300; /* When (military time) to switch logfiles */
118 char version[81]; /* Version info (long form) */
119 char ver[41]; /* Version info (short form) */
120 char egg_xtra[2048]; /* Patch info */
121 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
122 int do_restart = 0; /* .restart has been called, restart asap */
123 int die_on_sighup = 0; /* die if bot receives SIGHUP */
124 int die_on_sigterm = 1; /* die if bot receives SIGTERM */
125 int resolve_timeout = 15; /* hostname/address lookup timeout */
126 char quit_msg[1024]; /* quit message */
127 time_t now; /* duh, now :) */
128
129 /* Traffic stats
130 */
131 unsigned long otraffic_irc = 0;
132 unsigned long otraffic_irc_today = 0;
133 unsigned long otraffic_bn = 0;
134 unsigned long otraffic_bn_today = 0;
135 unsigned long otraffic_dcc = 0;
136 unsigned long otraffic_dcc_today = 0;
137 unsigned long otraffic_filesys = 0;
138 unsigned long otraffic_filesys_today = 0;
139 unsigned long otraffic_trans = 0;
140 unsigned long otraffic_trans_today = 0;
141 unsigned long otraffic_unknown = 0;
142 unsigned long otraffic_unknown_today = 0;
143 unsigned long itraffic_irc = 0;
144 unsigned long itraffic_irc_today = 0;
145 unsigned long itraffic_bn = 0;
146 unsigned long itraffic_bn_today = 0;
147 unsigned long itraffic_dcc = 0;
148 unsigned long itraffic_dcc_today = 0;
149 unsigned long itraffic_trans = 0;
150 unsigned long itraffic_trans_today = 0;
151 unsigned long itraffic_unknown = 0;
152 unsigned long itraffic_unknown_today = 0;
153
154 #ifdef DEBUG_CONTEXT
155 /* Context storage for fatal crashes */
156 char cx_file[16][30];
157 char cx_note[16][256];
158 int cx_line[16];
159 int cx_ptr = 0;
160 #endif
161
162
163 void fatal(const char *s, int recoverable)
164 {
165 int i;
166
167 putlog(LOG_MISC, "*", "* %s", s);
168 flushlogs();
169 for (i = 0; i < dcc_total; i++)
170 if (dcc[i].sock >= 0)
171 killsock(dcc[i].sock);
172 unlink(pid_file);
173 if (!recoverable) {
174 bg_send_quit(BG_ABORT);
175 exit(1);
176 }
177 }
178
179
180 int expmem_chanprog(), expmem_users(), expmem_misc(), expmem_dccutil(),
181 expmem_botnet(), expmem_tcl(), expmem_tclhash(), expmem_net(),
182 expmem_modules(int), expmem_tcldcc();
183
184 /* For mem.c : calculate memory we SHOULD be using
185 */
186 int expected_memory(void)
187 {
188 int tot;
189
190 tot = expmem_chanprog() + expmem_users() + expmem_misc() +
191 expmem_dccutil() + expmem_botnet() + expmem_tcl() + expmem_tclhash() +
192 expmem_net() + expmem_modules(0) + expmem_tcldcc();
193 return tot;
194 }
195
196 static void check_expired_dcc()
197 {
198 int i;
199
200 for (i = 0; i < dcc_total; i++)
201 if (dcc[i].type && dcc[i].type->timeout_val &&
202 ((now - dcc[i].timeval) > *(dcc[i].type->timeout_val))) {
203 if (dcc[i].type->timeout)
204 dcc[i].type->timeout(i);
205 else if (dcc[i].type->eof)
206 dcc[i].type->eof(i);
207 else
208 continue;
209 /* Only timeout 1 socket per cycle, too risky for more */
210 return;
211 }
212 }
213
214 #ifdef DEBUG_CONTEXT
215 static int nested_debug = 0;
216
217 void write_debug()
218 {
219 int x;
220 char s[25];
221 int y;
222
223 if (nested_debug) {
224 /* Yoicks, if we have this there's serious trouble!
225 * All of these are pretty reliable, so we'll try these.
226 *
227 * NOTE: dont try and display context-notes in here, it's
228 * _not_ safe <cybah>
229 */
230 x = creat("DEBUG.DEBUG", 0644);
231 setsock(x, SOCK_NONSOCK);
232 if (x >= 0) {
233 strncpyz(s, ctime(&now), sizeof s);
234 dprintf(-x, "Debug (%s) written %s\n", ver, s);
235 dprintf(-x, "Please report problem to bugs@eggheads.org\n");
236 dprintf(-x, "after a visit to http://www.eggheads.org/bugzilla/\n");
237 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
238 dprintf(-x, "Context: ");
239 cx_ptr = cx_ptr & 15;
240 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
241 dprintf(-x, "%s/%d,\n ", cx_file[y], cx_line[y]);
242 dprintf(-x, "%s/%d\n\n", cx_file[y], cx_line[y]);
243 killsock(x);
244 close(x);
245 }
246 bg_send_quit(BG_ABORT);
247 exit(1); /* Dont even try & tell people about, that may
248 have caused the fault last time. */
249 } else
250 nested_debug = 1;
251 putlog(LOG_MISC, "*", "* Last context: %s/%d [%s]", cx_file[cx_ptr],
252 cx_line[cx_ptr], cx_note[cx_ptr][0] ? cx_note[cx_ptr] : "");
253 putlog(LOG_MISC, "*", "* Please REPORT this BUG!");
254 putlog(LOG_MISC, "*", "* Check doc/BUG-REPORT on how to do so.");
255 x = creat("DEBUG", 0644);
256 setsock(x, SOCK_NONSOCK);
257 if (x < 0) {
258 putlog(LOG_MISC, "*", "* Failed to write DEBUG");
259 } else {
260 strncpyz(s, ctime(&now), sizeof s);
261 dprintf(-x, "Debug (%s) written %s\n", ver, s);
262 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
263 #ifdef STATIC
264 dprintf(-x, "STATICALLY LINKED\n");
265 #endif
266
267 /* info library */
268 dprintf(-x, "TCL library: %s\n",
269 ((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
270 interp->result : "*unknown*");
271
272 /* info tclversion/patchlevel */
273 dprintf(-x, "TCL version: %s (header version %s)\n",
274 ((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
275 interp->result : (Tcl_Eval(interp, "info tclversion") == TCL_OK) ?
276 interp->result : "*unknown*", TCL_PATCH_LEVEL ? TCL_PATCH_LEVEL :
277 "*unknown*");
278
279 #if HAVE_TCL_THREADS
280 dprintf(-x, "TCL is threaded\n");
281 #endif
282
283 #ifdef CCFLAGS
284 dprintf(-x, "Compile flags: %s\n", CCFLAGS);
285 #endif
286 #ifdef LDFLAGS
287 dprintf(-x, "Link flags: %s\n", LDFLAGS);
288 #endif
289 #ifdef STRIPFLAGS
290 dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
291 #endif
292
293 dprintf(-x, "Context: ");
294 cx_ptr = cx_ptr & 15;
295 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
296 dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
297 (cx_note[y][0]) ? cx_note[y] : "");
298 dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
299 (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
300 tell_dcc(-x);
301 dprintf(-x, "\n");
302 debug_mem_to_dcc(-x);
303 killsock(x);
304 close(x);
305 putlog(LOG_MISC, "*", "* Wrote DEBUG");
306 }
307 }
308 #endif
309
310 static void got_bus(int z)
311 {
312 #ifdef DEBUG_CONTEXT
313 write_debug();
314 #endif
315 fatal("BUS ERROR -- CRASHING!", 1);
316 #ifdef SA_RESETHAND
317 kill(getpid(), SIGBUS);
318 #else
319 bg_send_quit(BG_ABORT);
320 exit(1);
321 #endif
322 }
323
324 static void got_segv(int z)
325 {
326 #ifdef DEBUG_CONTEXT
327 write_debug();
328 #endif
329 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
330 #ifdef SA_RESETHAND
331 kill(getpid(), SIGSEGV);
332 #else
333 bg_send_quit(BG_ABORT);
334 exit(1);
335 #endif
336 }
337
338 static void got_fpe(int z)
339 {
340 #ifdef DEBUG_CONTEXT
341 write_debug();
342 #endif
343 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
344 }
345
346 static void got_term(int z)
347 {
348 write_userfile(-1);
349 check_tcl_event("sigterm");
350 check_event2("sigterm");
351 if (die_on_sigterm) {
352 botnet_send_chat(-1, botnetnick, "ACK, I've been terminated!");
353 fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
354 } else {
355 putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
356 }
357 }
358
359 static void got_quit(int z)
360 {
361 check_tcl_event("sigquit");
362 check_event2("sigquit");
363 putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
364 return;
365 }
366
367 static void got_hup(int z)
368 {
369 write_userfile(-1);
370 check_tcl_event("sighup");
371 check_event2("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 check_event2("sigill");
395 #ifdef DEBUG_CONTEXT
396 putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
397 cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
398 #endif
399 }
400
401 #ifdef DEBUG_CONTEXT
402 /* Context */
403 void eggContext(const char *file, int line, const char *module)
404 {
405 char x[31], *p;
406
407 p = strrchr(file, '/');
408 if (!module) {
409 strncpyz(x, p ? p + 1 : file, sizeof x);
410 } else
411 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
412 cx_ptr = ((cx_ptr + 1) & 15);
413 strcpy(cx_file[cx_ptr], x);
414 cx_line[cx_ptr] = line;
415 cx_note[cx_ptr][0] = 0;
416 }
417
418 /* Called from the ContextNote macro.
419 */
420 void eggContextNote(const char *file, int line, const char *module,
421 const char *note)
422 {
423 char x[31], *p;
424
425 p = strrchr(file, '/');
426 if (!module) {
427 strncpyz(x, p ? p + 1 : file, sizeof x);
428 } else
429 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
430 cx_ptr = ((cx_ptr + 1) & 15);
431 strcpy(cx_file[cx_ptr], x);
432 cx_line[cx_ptr] = line;
433 strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
434 }
435 #endif
436
437 #ifdef DEBUG_ASSERT
438 /* Called from the Assert macro.
439 */
440 void eggAssert(const char *file, int line, const char *module)
441 {
442 #ifdef DEBUG_CONTEXT
443 write_debug();
444 #endif
445 if (!module)
446 putlog(LOG_MISC, "*", "* In file %s, line %u", file, line);
447 else
448 putlog(LOG_MISC, "*", "* In file %s:%s, line %u", module, file, line);
449 fatal("ASSERT FAILED -- CRASHING!", 1);
450 }
451 #endif
452
453 static void do_arg(char *s)
454 {
455 char x[1024], *z = x;
456 int i;
457
458 if (s[0] == '-')
459 for (i = 1; i < strlen(s); i++) {
460 switch (s[i]) {
461 case 'n':
462 backgrd = 0;
463 break;
464 case 'c':
465 con_chan = 1;
466 term_z = 0;
467 break;
468 case 't':
469 con_chan = 0;
470 term_z = 1;
471 break;
472 case 'm':
473 make_userfile = 1;
474 break;
475 case 'v':
476 strncpyz(x, egg_version, sizeof x);
477 newsplit(&z);
478 newsplit(&z);
479 printf("%s\n", version);
480 if (z[0])
481 printf(" (patches: %s)\n", z);
482 bg_send_quit(BG_ABORT);
483 exit(0);
484 break; /* this should never be reached */
485 case 'h':
486 printf("\n%s\n\n", version);
487 printf(_("Command line arguments:\n\
488 -h help\n\
489 -v print version and exit\n\
490 -n don't go into the background\n\
491 -c (with -n) display channel stats every 10 seconds\n\
492 -t (with -n) use terminal to simulate dcc-chat\n\
493 -m userfile creation mode\n\
494 optional config filename (default 'eggdrop.conf')\n"));
495 printf("\n");
496 bg_send_quit(BG_ABORT);
497 exit(0);
498 break; /* this should never be reached */
499 }
500 } else
501 strncpyz(configfile, s, sizeof configfile);
502 }
503
504 void backup_userfile(void)
505 {
506 char s[125];
507
508 putlog(LOG_MISC, "*", _("Backing up user file..."));
509 egg_snprintf(s, sizeof s, "%s~bak", userfile);
510 copyfile(userfile, s);
511 }
512
513 /* Timer info */
514 static int lastmin = 99;
515 static time_t then;
516 static struct tm nowtm;
517
518 /* Called once a second.
519 *
520 * Note: Try to not put any Context lines in here (guppy 21Mar2000).
521 */
522 static void core_secondly()
523 {
524 static int cnt = 0;
525 int miltime;
526
527 do_check_timers(&utimer); /* Secondly timers */
528 cnt++;
529 if (cnt >= 10) { /* Every 10 seconds */
530 cnt = 0;
531 check_expired_dcc();
532 if (con_chan && !backgrd) {
533 dprintf(DP_STDOUT, "\033[2J\033[1;1H");
534 tell_verbose_status(DP_STDOUT);
535 do_module_report(DP_STDOUT, 0, "server");
536 do_module_report(DP_STDOUT, 0, "channels");
537 tell_mem_status_dcc(DP_STDOUT);
538 }
539 }
540 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
541 if (nowtm.tm_min != lastmin) {
542 int i = 0;
543
544 /* Once a minute */
545 lastmin = (lastmin + 1) % 60;
546 call_hook(HOOK_MINUTELY);
547 check_expired_ignores();
548 autolink_cycle(NULL); /* Attempt autolinks */
549 /* In case for some reason more than 1 min has passed: */
550 while (nowtm.tm_min != lastmin) {
551 /* Timer drift, dammit */
552 debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
553 i++;
554 lastmin = (lastmin + 1) % 60;
555 call_hook(HOOK_MINUTELY);
556 }
557 if (i > 1)
558 putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
559 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
560 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
561 call_hook(HOOK_5MINUTELY);
562 check_botnet_pings();
563 if (!quick_logs) {
564 flushlogs();
565 check_logsize();
566 }
567 if (!miltime) { /* At midnight */
568 char s[25];
569 int j;
570
571 strncpyz(s, ctime(&now), sizeof s);
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 putlog(LOG_MISC, "*", _("Switching logfiles..."));
591 for (i = 0; i < max_logs; i++)
592 if (logs[i].filename) {
593 char s[1024];
594
595 if (logs[i].f) {
596 fclose(logs[i].f);
597 logs[i].f = NULL;
598 }
599 egg_snprintf(s, sizeof s, "%s.yesterday", logs[i].filename);
600 unlink(s);
601 movefile(logs[i].filename, s);
602 }
603 }
604 }
605 }
606 }
607
608 static void core_minutely()
609 {
610 check_tcl_time(&nowtm);
611 do_check_timers(&timer);
612 if (quick_logs != 0) {
613 flushlogs();
614 check_logsize();
615 }
616 }
617
618 static void core_hourly()
619 {
620 write_userfile(-1);
621 }
622
623 static void event_rehash()
624 {
625 check_tcl_event("rehash");
626 check_event2("rehash");
627 }
628
629 static void event_prerehash()
630 {
631 check_tcl_event("prerehash");
632 check_event2("prerehash");
633 }
634
635 static void event_save()
636 {
637 check_tcl_event("save");
638 check_event2("save");
639 }
640
641 static void event_logfile()
642 {
643 check_tcl_event("logfile");
644 check_event2("logfile");
645 }
646
647 static void event_resettraffic()
648 {
649 otraffic_irc += otraffic_irc_today;
650 itraffic_irc += itraffic_irc_today;
651 otraffic_bn += otraffic_bn_today;
652 itraffic_bn += itraffic_bn_today;
653 otraffic_dcc += otraffic_dcc_today;
654 itraffic_dcc += itraffic_dcc_today;
655 otraffic_unknown += otraffic_unknown_today;
656 itraffic_unknown += itraffic_unknown_today;
657 otraffic_trans += otraffic_trans_today;
658 itraffic_trans += itraffic_trans_today;
659 otraffic_irc_today = otraffic_bn_today = 0;
660 otraffic_dcc_today = otraffic_unknown_today = 0;
661 itraffic_irc_today = itraffic_bn_today = 0;
662 itraffic_dcc_today = itraffic_unknown_today = 0;
663 itraffic_trans_today = otraffic_trans_today = 0;
664 }
665
666 static void event_loaded()
667 {
668 check_tcl_event("loaded");
669 check_event2("loaded");
670 }
671
672 void kill_tcl();
673 extern module_entry *module_list;
674 void restart_chons();
675
676 #ifdef STATIC
677 void check_static(char *, char *(*)());
678
679 #include "mod/static.h"
680 #endif
681 int init_mem(), init_dcc_max(), init_userent(), init_misc(), init_bots(),
682 init_net(), init_modules(), init_tcl(int, char **);
683
684 void patch(const char *str)
685 {
686 char *p = strchr(egg_version, '+');
687
688 if (!p)
689 p = &egg_version[strlen(egg_version)];
690 sprintf(p, "+%s", str);
691 egg_numver++;
692 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
693 }
694
695 static inline void garbage_collect(void)
696 {
697 static u_8bit_t run_cnt = 0;
698
699 if (run_cnt == 3)
700 garbage_collect_tclhash();
701 else
702 run_cnt++;
703 }
704
705 int main(int argc, char **argv)
706 {
707 int xx, i;
708 char buf[520], s[25];
709 FILE *f;
710 struct sigaction sv;
711 struct chanset_t *chan;
712
713 #ifdef DEBUG_MEM
714 /* Make sure it can write core, if you make debug. Else it's pretty
715 * useless (dw)
716 */
717 {
718 #include <sys/resource.h>
719 struct rlimit cdlim;
720
721 cdlim.rlim_cur = RLIM_INFINITY;
722 cdlim.rlim_max = RLIM_INFINITY;
723 setrlimit(RLIMIT_CORE, &cdlim);
724 }
725 #endif
726
727 /* Initialise context list */
728 for (i = 0; i < 16; i++)
729 Context;
730
731 setlocale(LC_MESSAGES, "");
732 bindtextdomain(PACKAGE, LOCALEDIR);
733 textdomain(PACKAGE);
734
735 #include "patch.h"
736 /* Version info! */
737 egg_snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
738 egg_snprintf(version, sizeof version, "Eggdrop v%s (C)1997 Robey Pointer (C)2001 Eggheads",
739 egg_version);
740 /* Now add on the patchlevel (for Tcl) */
741 sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
742 strcat(egg_version, egg_xtra);
743 #ifdef STOP_UAC
744 {
745 int nvpair[2];
746
747 nvpair[0] = SSIN_UACPROC;
748 nvpair[1] = UAC_NOPRINT;
749 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
750 }
751 #endif
752
753 /* Set up error traps: */
754 sv.sa_handler = got_bus;
755 sigemptyset(&sv.sa_mask);
756 #ifdef SA_RESETHAND
757 sv.sa_flags = SA_RESETHAND;
758 #else
759 sv.sa_flags = 0;
760 #endif
761 sigaction(SIGBUS, &sv, NULL);
762 sv.sa_handler = got_segv;
763 sigaction(SIGSEGV, &sv, NULL);
764 #ifdef SA_RESETHAND
765 sv.sa_flags = 0;
766 #endif
767 sv.sa_handler = got_fpe;
768 sigaction(SIGFPE, &sv, NULL);
769 sv.sa_handler = got_term;
770 sigaction(SIGTERM, &sv, NULL);
771 sv.sa_handler = got_hup;
772 sigaction(SIGHUP, &sv, NULL);
773 sv.sa_handler = got_quit;
774 sigaction(SIGQUIT, &sv, NULL);
775 sv.sa_handler = SIG_IGN;
776 sigaction(SIGPIPE, &sv, NULL);
777 sv.sa_handler = got_ill;
778 sigaction(SIGILL, &sv, NULL);
779 sv.sa_handler = got_alarm;
780 sigaction(SIGALRM, &sv, NULL);
781
782 /* Initialize variables and stuff */
783 now = time(NULL);
784 chanset = NULL;
785 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
786 lastmin = nowtm.tm_min;
787 srandom(now % (getpid() + getppid()));
788 init_mem();
789 if (argc > 1)
790 for (i = 1; i < argc; i++)
791 do_arg(argv[i]);
792 printf("\n%s\n", version);
793
794 /* Don't allow eggdrop to run as root */
795 if (((int) getuid() == 0) || ((int) geteuid() == 0))
796 fatal(_("ERROR: Eggdrop will not run as root!"), 0);
797
798 init_dcc_max();
799 init_userent();
800 init_misc();
801 init_bots();
802 init_net();
803 init_modules();
804 if (backgrd)
805 bg_prepare_split();
806 init_tcl(argc, argv);
807 #ifdef STATIC
808 link_statics();
809 #endif
810 strncpyz(s, ctime(&now), sizeof s);
811 strcpy(&s[11], &s[20]);
812 putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
813 chanprog();
814 if (!encrypt_pass) {
815 printf(_("You have installed modules but have not selected an encryption\n\
816 module, please consult the default config file for info.\n"));
817 bg_send_quit(BG_ABORT);
818 exit(1);
819 }
820 i = 0;
821 for (chan = chanset; chan; chan = chan->next)
822 i++;
823 putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
824 botnetnick, i, count_users(userlist));
825 cache_miss = 0;
826 cache_hit = 0;
827 egg_snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
828
829 /* Check for pre-existing eggdrop! */
830 f = fopen(pid_file, "r");
831 if (f != NULL) {
832 fgets(s, 10, f);
833 xx = atoi(s);
834 kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
835 is used */
836 if (errno != ESRCH) {
837 printf(_("I detect %s already running from this directory.\n"), origbotname);
838 printf(_("If this is incorrect, erase the %s\n"), pid_file);
839 bg_send_quit(BG_ABORT);
840 exit(1);
841 }
842 }
843
844 /* Move into background? */
845 if (backgrd) {
846 #ifndef CYGWIN_HACKS
847 bg_do_split();
848 } else { /* !backgrd */
849 #endif
850 xx = getpid();
851 if (xx != 0) {
852 FILE *fp;
853
854 /* Write pid to file */
855 unlink(pid_file);
856 fp = fopen(pid_file, "w");
857 if (fp != NULL) {
858 fprintf(fp, "%u\n", xx);
859 if (fflush(fp)) {
860 /* Let the bot live since this doesn't appear to be a botchk */
861 printf(_("* Warning! Could not write %s file!\n"), pid_file);
862 fclose(fp);
863 unlink(pid_file);
864 } else
865 fclose(fp);
866 } else
867 printf(_("* Warning! Could not write %s file!\n"), pid_file);
868 #ifdef CYGWIN_HACKS
869 printf("Launched into the background (pid: %d)\n\n", xx);
870 #endif
871 }
872 }
873
874 use_stderr = 0; /* Stop writing to stderr now */
875 if (backgrd) {
876 /* Ok, try to disassociate from controlling terminal (finger cross) */
877 #if HAVE_SETPGID && !defined(CYGWIN_HACKS)
878 setpgid(0, 0);
879 #endif
880 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
881 freopen("/dev/null", "r", stdin);
882 freopen("/dev/null", "w", stdout);
883 freopen("/dev/null", "w", stderr);
884 #ifdef CYGWIN_HACKS
885 FreeConsole();
886 #endif
887 }
888
889 /* Terminal emulating dcc chat */
890 if (!backgrd && term_z) {
891 int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
892
893 dcc[n].addr[0] = '\0';
894 dcc[n].sock = STDOUT;
895 dcc[n].timeval = now;
896 dcc[n].u.chat->con_flags = conmask;
897 dcc[n].u.chat->strip_flags = STRIP_ALL;
898 dcc[n].status = STAT_ECHO;
899 strcpy(dcc[n].nick, "HQ");
900 strcpy(dcc[n].host, "llama@console");
901 dcc[n].user = get_user_by_handle(userlist, "HQ");
902 /* Make sure there's an innocuous HQ user if needed */
903 if (!dcc[n].user) {
904 userlist = adduser(userlist, "HQ", "none", "-", USER_PARTY);
905 dcc[n].user = get_user_by_handle(userlist, "HQ");
906 }
907 setsock(STDOUT, 0); /* Entry in net table */
908 dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
909 dcc_chatter(n);
910 }
911
912 then = now;
913 online_since = now;
914 autolink_cycle(NULL); /* Hurry and connect to tandem bots */
915 add_help_reference("cmds1.help");
916 add_help_reference("cmds2.help");
917 add_help_reference("core.help");
918 add_hook(HOOK_SECONDLY, (Function) core_secondly);
919 add_hook(HOOK_MINUTELY, (Function) core_minutely);
920 add_hook(HOOK_HOURLY, (Function) core_hourly);
921 add_hook(HOOK_REHASH, (Function) event_rehash);
922 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
923 add_hook(HOOK_USERFILE, (Function) event_save);
924 add_hook(HOOK_BACKUP, (Function) backup_userfile);
925 add_hook(HOOK_DAILY, (Function) event_logfile);
926 add_hook(HOOK_DAILY, (Function) event_resettraffic);
927 add_hook(HOOK_LOADED, (Function) event_loaded);
928
929 call_hook(HOOK_LOADED);
930
931 debug0("main: entering loop");
932 while (1) {
933 int socket_cleanup = 0;
934
935 #if !defined(HAVE_PRE7_5_TCL)
936 /* Process a single tcl event */
937 Tcl_DoOneEvent(TCL_ALL_EVENTS | TCL_DONT_WAIT);
938 #endif
939
940 /* Lets move some of this here, reducing the numer of actual
941 * calls to periodic_timers
942 */
943 now = time(NULL);
944 random(); /* Woop, lets really jumble things */
945 if (now != then) { /* Once a second */
946 call_hook(HOOK_SECONDLY);
947 then = now;
948 }
949
950 /* Only do this every so often. */
951 if (!socket_cleanup) {
952 socket_cleanup = 5;
953
954 /* Remove dead dcc entries. */
955 dcc_remove_lost();
956
957 /* Check for server or dcc activity. */
958 dequeue_sockets();
959 } else
960 socket_cleanup--;
961
962 /* Free unused structures. */
963 garbage_collect();
964
965 xx = sockgets(buf, &i);
966 if (xx >= 0) { /* Non-error */
967 int idx;
968
969 for (idx = 0; idx < dcc_total; idx++)
970 if (dcc[idx].sock == xx) {
971 if (dcc[idx].type && dcc[idx].type->activity) {
972 /* Traffic stats */
973 if (dcc[idx].type->name) {
974 if (!strncmp(dcc[idx].type->name, "BOT", 3))
975 itraffic_bn_today += strlen(buf) + 1;
976 else if (!strcmp(dcc[idx].type->name, "SERVER"))
977 itraffic_irc_today += strlen(buf) + 1;
978 else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
979 itraffic_dcc_today += strlen(buf) + 1;
980 else if (!strncmp(dcc[idx].type->name, "FILES", 5))
981 itraffic_dcc_today += strlen(buf) + 1;
982 else if (!strcmp(dcc[idx].type->name, "SEND"))
983 itraffic_trans_today += strlen(buf) + 1;
984 else if (!strncmp(dcc[idx].type->name, "GET", 3))
985 itraffic_trans_today += strlen(buf) + 1;
986 else
987 itraffic_unknown_today += strlen(buf) + 1;
988 }
989 dcc[idx].type->activity(idx, buf, i);
990 } else
991 putlog(LOG_MISC, "*",
992 "!!! untrapped dcc activity: type %s, sock %d",
993 dcc[idx].type->name, dcc[idx].sock);
994 break;
995 }
996 } else if (xx == -1) { /* EOF from someone */
997 int idx;
998
999 if (i == STDOUT && !backgrd)
1000 fatal("END OF FILE ON TERMINAL", 0);
1001 for (idx = 0; idx < dcc_total; idx++)
1002 if (dcc[idx].sock == i) {
1003 if (dcc[idx].type && dcc[idx].type->eof)
1004 dcc[idx].type->eof(idx);
1005 else {
1006 putlog(LOG_MISC, "*",
1007 "*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
1008 i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
1009 killsock(i);
1010 lostdcc(idx);
1011 }
1012 idx = dcc_total + 1;
1013 }
1014 if (idx == dcc_total) {
1015 putlog(LOG_MISC, "*",
1016 "(@) EOF socket %d, not a dcc socket, not anything.", i);
1017 close(i);
1018 killsock(i);
1019 }
1020 } else if (xx == -2 && errno != EINTR) { /* select() error */
1021 putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
1022 for (i = 0; i < dcc_total; i++) {
1023 if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno = EBADF)) {
1024 putlog(LOG_MISC, "*",
1025 "DCC socket %d (type %d, name '%s') expired -- pfft",
1026 dcc[i].sock, dcc[i].type, dcc[i].nick);
1027 killsock(dcc[i].sock);
1028 lostdcc(i);
1029 i--;
1030 }
1031 }
1032 } else if (xx == -3) {
1033 call_hook(HOOK_IDLE);
1034 socket_cleanup = 0; /* If we've been idle, cleanup & flush */
1035 }
1036
1037 if (do_restart) {
1038 if (do_restart == -2)
1039 rehash();
1040 else {
1041 /* Unload as many modules as possible */
1042 int f = 1;
1043 module_entry *p;
1044 Function x;
1045 char xx[256];
1046
1047 /* oops, I guess we should call this event before tcl is restarted */
1048 check_tcl_event("prerestart");
1049 check_event2("prerestart");
1050
1051 while (f) {
1052 f = 0;
1053 for (p = module_list; p != NULL; p = p->next) {
1054 dependancy *d = dependancy_list;
1055 int ok = 1;
1056
1057 while (ok && d) {
1058 if (d->needed == p)
1059 ok = 0;
1060 d = d->next;
1061 }
1062 if (ok) {
1063 strcpy(xx, p->name);
1064 if (module_unload(xx, origbotname) == NULL) {
1065 f = 1;
1066 break;
1067 }
1068 }
1069 }
1070 }
1071 p = module_list;
1072 if (p && p->next && p->next->next)
1073 /* Should be only 2 modules now - blowfish (or some other
1074 encryption module) and eggdrop. */
1075 putlog(LOG_MISC, "*", _("Stagnant module; there WILL be memory leaks!"));
1076 flushlogs();
1077 kill_tcl();
1078 init_tcl(argc, argv);
1079 /* We expect the encryption module as the current module pointed
1080 * to by `module_list'.
1081 */
1082 x = p->funcs[MODCALL_START];
1083 /* `NULL' indicates that we just recently restarted. The module
1084 * is expected to re-initialise as needed.
1085 */
1086 x(NULL);
1087 rehash();
1088 restart_chons();
1089 call_hook(HOOK_LOADED);
1090 }
1091 do_restart = 0;
1092 }
1093 }
1094 }

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