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

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Revision 1.89 - (show annotations) (download) (as text)
Wed Oct 17 06:08:11 2001 UTC (17 years, 9 months ago) by stdarg
Branch: MAIN
Changes since 1.88: +3 -1 lines
File MIME type: text/x-chdr
Updates to timer code.
Added USER and CALLBACK types to perl module.

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 1.88 2001/10/17 03:28:16 stdarg 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 #include "egg_timer.h"
57 #include "core_binds.h"
58
59 #include "adns/adns.h"
60
61 #ifdef CYGWIN_HACKS
62 #include <windows.h>
63 #endif
64
65 #ifndef _POSIX_SOURCE
66 /* Solaris needs this */
67 #define _POSIX_SOURCE 1
68 #endif
69
70 extern char origbotname[], userfile[], botnetnick[];
71 extern int dcc_total, conmask, cache_hit, cache_miss,
72 max_logs, quick_logs;
73 extern struct dcc_t *dcc;
74 extern struct userrec *userlist;
75 extern struct chanset_t *chanset;
76 extern log_t *logs;
77 extern Tcl_Interp *interp;
78 extern tcl_timer_t *timer,
79 *utimer;
80 extern jmp_buf alarmret;
81
82
83 /*
84 * Please use the PATCH macro instead of directly altering the version
85 * string from now on (it makes it much easier to maintain patches).
86 * Also please read the README file regarding your rights to distribute
87 * modified versions of this bot.
88 */
89
90 char egg_version[1024] = VERSION;
91 int egg_numver = VERSION_NUM;
92
93 char notify_new[121] = ""; /* Person to send a note to for new users */
94 int default_flags = 0; /* Default user flags and */
95 int default_uflags = 0; /* Default userdefinied flags for people
96 who say 'hello' or for .adduser */
97
98 int backgrd = 1; /* Run in the background? */
99 int con_chan = 0; /* Foreground: constantly display channel
100 stats? */
101 int term_z = 0; /* Foreground: use the terminal as a party
102 line? */
103 char configfile[121] = "eggdrop.conf"; /* Name of the config file */
104 char helpdir[121]; /* Directory of help files (if used) */
105 char textdir[121] = ""; /* Directory for text files that get dumped */
106 int keep_all_logs = 0; /* Never erase logfiles, no matter how old
107 they are? */
108 char logfile_suffix[21] = ".%d%b%Y"; /* Format of logfile suffix. */
109 time_t online_since; /* Unix-time that the bot loaded up */
110 int make_userfile = 0; /* Using bot in make-userfile mode? (first
111 user to 'hello' becomes master) */
112 char owner[121] = ""; /* Permanent owner(s) of the bot */
113 char pid_file[HANDLEN + 5]; /* Name of the file for the pid to be
114 stored in */
115 int save_users_at = 0; /* How many minutes past the hour to
116 save the userfile? */
117 int notify_users_at = 0; /* How many minutes past the hour to
118 notify users of notes? */
119 int switch_logfiles_at = 300; /* When (military time) to switch logfiles */
120 char version[81]; /* Version info (long form) */
121 char ver[41]; /* Version info (short form) */
122 char egg_xtra[2048]; /* Patch info */
123 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
124 int do_restart = 0; /* .restart has been called, restart asap */
125 int die_on_sighup = 0; /* die if bot receives SIGHUP */
126 int die_on_sigterm = 1; /* die if bot receives SIGTERM */
127 int resolve_timeout = 15; /* hostname/address lookup timeout */
128 char quit_msg[1024]; /* quit message */
129 time_t now; /* duh, now :) */
130
131 /* Traffic stats
132 */
133 unsigned long otraffic_irc = 0;
134 unsigned long otraffic_irc_today = 0;
135 unsigned long otraffic_bn = 0;
136 unsigned long otraffic_bn_today = 0;
137 unsigned long otraffic_dcc = 0;
138 unsigned long otraffic_dcc_today = 0;
139 unsigned long otraffic_filesys = 0;
140 unsigned long otraffic_filesys_today = 0;
141 unsigned long otraffic_trans = 0;
142 unsigned long otraffic_trans_today = 0;
143 unsigned long otraffic_unknown = 0;
144 unsigned long otraffic_unknown_today = 0;
145 unsigned long itraffic_irc = 0;
146 unsigned long itraffic_irc_today = 0;
147 unsigned long itraffic_bn = 0;
148 unsigned long itraffic_bn_today = 0;
149 unsigned long itraffic_dcc = 0;
150 unsigned long itraffic_dcc_today = 0;
151 unsigned long itraffic_trans = 0;
152 unsigned long itraffic_trans_today = 0;
153 unsigned long itraffic_unknown = 0;
154 unsigned long itraffic_unknown_today = 0;
155
156 #ifdef DEBUG_CONTEXT
157 /* Context storage for fatal crashes */
158 char cx_file[16][30];
159 char cx_note[16][256];
160 int cx_line[16];
161 int cx_ptr = 0;
162 #endif
163
164
165 void fatal(const char *s, int recoverable)
166 {
167 int i;
168
169 putlog(LOG_MISC, "*", "* %s", s);
170 flushlogs();
171 for (i = 0; i < dcc_total; i++)
172 if (dcc[i].sock >= 0)
173 killsock(dcc[i].sock);
174 unlink(pid_file);
175 if (!recoverable) {
176 bg_send_quit(BG_ABORT);
177 exit(1);
178 }
179 }
180
181 static void check_expired_dcc()
182 {
183 int i;
184
185 for (i = 0; i < dcc_total; i++)
186 if (dcc[i].type && dcc[i].type->timeout_val &&
187 ((now - dcc[i].timeval) > *(dcc[i].type->timeout_val))) {
188 if (dcc[i].type->timeout)
189 dcc[i].type->timeout(i);
190 else if (dcc[i].type->eof)
191 dcc[i].type->eof(i);
192 else
193 continue;
194 /* Only timeout 1 socket per cycle, too risky for more */
195 return;
196 }
197 }
198
199 #ifdef DEBUG_CONTEXT
200 static int nested_debug = 0;
201
202 void write_debug()
203 {
204 int x;
205 char s[25];
206 int y;
207
208 if (nested_debug) {
209 /* Yoicks, if we have this there's serious trouble!
210 * All of these are pretty reliable, so we'll try these.
211 *
212 * NOTE: dont try and display context-notes in here, it's
213 * _not_ safe <cybah>
214 */
215 x = creat("DEBUG.DEBUG", 0644);
216 setsock(x, SOCK_NONSOCK);
217 if (x >= 0) {
218 strncpyz(s, ctime(&now), sizeof s);
219 dprintf(-x, "Debug (%s) written %s\n", ver, s);
220 dprintf(-x, "Please report problem to bugs@eggheads.org\n");
221 dprintf(-x, "after a visit to http://www.eggheads.org/bugzilla/\n");
222 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
223 dprintf(-x, "Context: ");
224 cx_ptr = cx_ptr & 15;
225 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
226 dprintf(-x, "%s/%d,\n ", cx_file[y], cx_line[y]);
227 dprintf(-x, "%s/%d\n\n", cx_file[y], cx_line[y]);
228 killsock(x);
229 close(x);
230 }
231 bg_send_quit(BG_ABORT);
232 exit(1); /* Dont even try & tell people about, that may
233 have caused the fault last time. */
234 } else
235 nested_debug = 1;
236 putlog(LOG_MISC, "*", "* Last context: %s/%d [%s]", cx_file[cx_ptr],
237 cx_line[cx_ptr], cx_note[cx_ptr][0] ? cx_note[cx_ptr] : "");
238 putlog(LOG_MISC, "*", "* Please REPORT this BUG!");
239 putlog(LOG_MISC, "*", "* Check doc/BUG-REPORT on how to do so.");
240 x = creat("DEBUG", 0644);
241 setsock(x, SOCK_NONSOCK);
242 if (x < 0) {
243 putlog(LOG_MISC, "*", "* Failed to write DEBUG");
244 } else {
245 strncpyz(s, ctime(&now), sizeof s);
246 dprintf(-x, "Debug (%s) written %s\n", ver, s);
247 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
248 #ifdef STATIC
249 dprintf(-x, "STATICALLY LINKED\n");
250 #endif
251
252 /* info library */
253 dprintf(-x, "TCL library: %s\n",
254 ((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
255 interp->result : "*unknown*");
256
257 /* info tclversion/patchlevel */
258 dprintf(-x, "TCL version: %s (header version %s)\n",
259 ((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
260 interp->result : (Tcl_Eval(interp, "info tclversion") == TCL_OK) ?
261 interp->result : "*unknown*", TCL_PATCH_LEVEL ? TCL_PATCH_LEVEL :
262 "*unknown*");
263
264 #if HAVE_TCL_THREADS
265 dprintf(-x, "TCL is threaded\n");
266 #endif
267
268 #ifdef CCFLAGS
269 dprintf(-x, "Compile flags: %s\n", CCFLAGS);
270 #endif
271 #ifdef LDFLAGS
272 dprintf(-x, "Link flags: %s\n", LDFLAGS);
273 #endif
274 #ifdef STRIPFLAGS
275 dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
276 #endif
277
278 dprintf(-x, "Context: ");
279 cx_ptr = cx_ptr & 15;
280 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
281 dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
282 (cx_note[y][0]) ? cx_note[y] : "");
283 dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
284 (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
285 tell_dcc(-x);
286 dprintf(-x, "\n");
287 tell_netdebug(-x);
288 killsock(x);
289 close(x);
290 putlog(LOG_MISC, "*", "* Wrote DEBUG");
291 }
292 }
293 #endif
294
295 static void got_bus(int z)
296 {
297 #ifdef DEBUG_CONTEXT
298 write_debug();
299 #endif
300 fatal("BUS ERROR -- CRASHING!", 1);
301 #ifdef SA_RESETHAND
302 kill(getpid(), SIGBUS);
303 #else
304 bg_send_quit(BG_ABORT);
305 exit(1);
306 #endif
307 }
308
309 static void got_segv(int z)
310 {
311 #ifdef DEBUG_CONTEXT
312 write_debug();
313 #endif
314 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
315 #ifdef SA_RESETHAND
316 kill(getpid(), SIGSEGV);
317 #else
318 bg_send_quit(BG_ABORT);
319 exit(1);
320 #endif
321 }
322
323 static void got_fpe(int z)
324 {
325 #ifdef DEBUG_CONTEXT
326 write_debug();
327 #endif
328 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
329 }
330
331 static void got_term(int z)
332 {
333 write_userfile(-1);
334 check_bind_event("sigterm");
335 if (die_on_sigterm) {
336 fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
337 } else {
338 putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
339 }
340 }
341
342 static void got_quit(int z)
343 {
344 check_bind_event("sigquit");
345 putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
346 return;
347 }
348
349 static void got_hup(int z)
350 {
351 write_userfile(-1);
352 check_bind_event("sighup");
353 if (die_on_sighup) {
354 fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
355 } else
356 putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
357 do_restart = -2;
358 return;
359 }
360
361 /* A call to resolver (gethostbyname, etc) timed out
362 */
363 static void got_alarm(int z)
364 {
365 longjmp(alarmret, 1);
366
367 /* -Never reached- */
368 }
369
370 /* Got ILL signal -- log context and continue
371 */
372 static void got_ill(int z)
373 {
374 check_bind_event("sigill");
375 #ifdef DEBUG_CONTEXT
376 putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
377 cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
378 #endif
379 }
380
381 #ifdef DEBUG_CONTEXT
382 /* Context */
383 void eggContext(const char *file, int line, const char *module)
384 {
385 char x[31], *p;
386
387 p = strrchr(file, '/');
388 if (!module) {
389 strncpyz(x, p ? p + 1 : file, sizeof x);
390 } else
391 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
392 cx_ptr = ((cx_ptr + 1) & 15);
393 strcpy(cx_file[cx_ptr], x);
394 cx_line[cx_ptr] = line;
395 cx_note[cx_ptr][0] = 0;
396 }
397
398 /* Called from the ContextNote macro.
399 */
400 void eggContextNote(const char *file, int line, const char *module,
401 const char *note)
402 {
403 char x[31], *p;
404
405 p = strrchr(file, '/');
406 if (!module) {
407 strncpyz(x, p ? p + 1 : file, sizeof x);
408 } else
409 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
410 cx_ptr = ((cx_ptr + 1) & 15);
411 strcpy(cx_file[cx_ptr], x);
412 cx_line[cx_ptr] = line;
413 strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
414 }
415 #endif
416
417 static void do_arg(char *s)
418 {
419 char x[1024], *z = x;
420 int i;
421
422 if (s[0] == '-')
423 for (i = 1; i < strlen(s); i++) {
424 switch (s[i]) {
425 case 'n':
426 backgrd = 0;
427 break;
428 case 'c':
429 con_chan = 1;
430 term_z = 0;
431 break;
432 case 't':
433 con_chan = 0;
434 term_z = 1;
435 break;
436 case 'm':
437 make_userfile = 1;
438 break;
439 case 'v':
440 strncpyz(x, egg_version, sizeof x);
441 newsplit(&z);
442 newsplit(&z);
443 printf("%s\n", version);
444 if (z[0])
445 printf(" (patches: %s)\n", z);
446 bg_send_quit(BG_ABORT);
447 exit(0);
448 break; /* this should never be reached */
449 case 'h':
450 printf("\n%s\n\n", version);
451 printf(_("Command line arguments:\n\
452 -h help\n\
453 -v print version and exit\n\
454 -n don't go into the background\n\
455 -c (with -n) display channel stats every 10 seconds\n\
456 -t (with -n) use terminal to simulate dcc-chat\n\
457 -m userfile creation mode\n\
458 optional config filename (default 'eggdrop.conf')\n"));
459 printf("\n");
460 bg_send_quit(BG_ABORT);
461 exit(0);
462 break; /* this should never be reached */
463 }
464 } else
465 strncpyz(configfile, s, sizeof configfile);
466 }
467
468 void backup_userfile(void)
469 {
470 char s[125];
471
472 putlog(LOG_MISC, "*", _("Backing up user file..."));
473 egg_snprintf(s, sizeof s, "%s~bak", userfile);
474 copyfile(userfile, s);
475 }
476
477 /* Timer info */
478 static int lastmin = 99;
479 static time_t then;
480 static struct tm nowtm;
481
482 /* Called once a second.
483 *
484 * Note: Try to not put any Context lines in here (guppy 21Mar2000).
485 */
486 static void core_secondly()
487 {
488 static int cnt = 0;
489 int miltime;
490
491 call_hook(HOOK_SECONDLY); /* Will be removed later */
492 cnt++;
493 if (cnt >= 10) { /* Every 10 seconds */
494 cnt = 0;
495 check_expired_dcc();
496 if (con_chan && !backgrd) {
497 dprintf(DP_STDOUT, "\033[2J\033[1;1H");
498 tell_verbose_status(DP_STDOUT);
499 do_module_report(DP_STDOUT, 0, "server");
500 do_module_report(DP_STDOUT, 0, "channels");
501 }
502 }
503 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
504 if (nowtm.tm_min != lastmin) {
505 int i = 0;
506
507 /* Once a minute */
508 lastmin = (lastmin + 1) % 60;
509 call_hook(HOOK_MINUTELY);
510 check_expired_ignores();
511 autolink_cycle(NULL); /* Attempt autolinks */
512 /* In case for some reason more than 1 min has passed: */
513 while (nowtm.tm_min != lastmin) {
514 /* Timer drift, dammit */
515 debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
516 i++;
517 lastmin = (lastmin + 1) % 60;
518 call_hook(HOOK_MINUTELY);
519 }
520 if (i > 1)
521 putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
522 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
523 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
524 call_hook(HOOK_5MINUTELY);
525 if (!quick_logs) {
526 flushlogs();
527 check_logsize();
528 }
529 if (!miltime) { /* At midnight */
530 char s[25];
531 int j;
532
533 strncpyz(s, ctime(&now), sizeof s);
534 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
535 call_hook(HOOK_BACKUP);
536 for (j = 0; j < max_logs; j++) {
537 if (logs[j].filename != NULL && logs[j].f != NULL) {
538 fclose(logs[j].f);
539 logs[j].f = NULL;
540 }
541 }
542 }
543 }
544 if (nowtm.tm_min == notify_users_at)
545 call_hook(HOOK_HOURLY);
546 /* These no longer need checking since they are all check vs minutely
547 * settings and we only get this far on the minute.
548 */
549 if (miltime == switch_logfiles_at) {
550 call_hook(HOOK_DAILY);
551 if (!keep_all_logs) {
552 putlog(LOG_MISC, "*", _("Switching logfiles..."));
553 for (i = 0; i < max_logs; i++)
554 if (logs[i].filename) {
555 char s[1024];
556
557 if (logs[i].f) {
558 fclose(logs[i].f);
559 logs[i].f = NULL;
560 }
561 egg_snprintf(s, sizeof s, "%s.yesterday", logs[i].filename);
562 unlink(s);
563 movefile(logs[i].filename, s);
564 }
565 }
566 }
567 }
568 }
569
570 static void core_minutely()
571 {
572 check_bind_time(&nowtm);
573 if (quick_logs != 0) {
574 flushlogs();
575 check_logsize();
576 }
577 }
578
579 static void core_hourly()
580 {
581 write_userfile(-1);
582 }
583
584 static void event_rehash()
585 {
586 check_bind_event("rehash");
587 }
588
589 static void event_prerehash()
590 {
591 check_bind_event("prerehash");
592 }
593
594 static void event_save()
595 {
596 check_bind_event("save");
597 }
598
599 static void event_logfile()
600 {
601 check_bind_event("logfile");
602 }
603
604 static void event_resettraffic()
605 {
606 otraffic_irc += otraffic_irc_today;
607 itraffic_irc += itraffic_irc_today;
608 otraffic_bn += otraffic_bn_today;
609 itraffic_bn += itraffic_bn_today;
610 otraffic_dcc += otraffic_dcc_today;
611 itraffic_dcc += itraffic_dcc_today;
612 otraffic_unknown += otraffic_unknown_today;
613 itraffic_unknown += itraffic_unknown_today;
614 otraffic_trans += otraffic_trans_today;
615 itraffic_trans += itraffic_trans_today;
616 otraffic_irc_today = otraffic_bn_today = 0;
617 otraffic_dcc_today = otraffic_unknown_today = 0;
618 itraffic_irc_today = itraffic_bn_today = 0;
619 itraffic_dcc_today = itraffic_unknown_today = 0;
620 itraffic_trans_today = otraffic_trans_today = 0;
621 }
622
623 static void event_loaded()
624 {
625 check_bind_event("loaded");
626 }
627
628 void kill_tcl();
629 extern module_entry *module_list;
630 void restart_chons();
631
632 int init_dcc_max(), init_userent(), init_misc(), init_net(),
633 init_modules(), init_tcl(int, char **);
634 void timer_init();
635 void botnet_init();
636 void dns_init();
637 void script_init();
638 void binds_init();
639
640 void patch(const char *str)
641 {
642 char *p = strchr(egg_version, '+');
643
644 if (!p)
645 p = &egg_version[strlen(egg_version)];
646 sprintf(p, "+%s", str);
647 egg_numver++;
648 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
649 }
650
651 static inline void garbage_collect(void)
652 {
653 static u_8bit_t run_cnt = 0;
654
655 if (run_cnt == 3)
656 garbage_collect_tclhash();
657 else
658 run_cnt++;
659 }
660
661 int main(int argc, char **argv)
662 {
663 int xx, i;
664 char buf[520], s[25];
665 FILE *f;
666 struct sigaction sv;
667 struct chanset_t *chan;
668 egg_timeval_t howlong;
669
670 #ifdef DEBUG
671 /* Make sure it can write core, if you make debug. Else it's pretty
672 * useless (dw)
673 */
674 {
675 #include <sys/resource.h>
676 struct rlimit cdlim;
677
678 cdlim.rlim_cur = RLIM_INFINITY;
679 cdlim.rlim_max = RLIM_INFINITY;
680 setrlimit(RLIMIT_CORE, &cdlim);
681 }
682 #endif
683
684 /* Initialise context list */
685 for (i = 0; i < 16; i++)
686 Context;
687
688 setlocale(LC_MESSAGES, "");
689 bindtextdomain(PACKAGE, LOCALEDIR);
690 textdomain(PACKAGE);
691
692 #include "patch.h"
693 /* Version info! */
694 egg_snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
695 egg_snprintf(version, sizeof version, "Eggdrop v%s (C)1997 Robey Pointer (C)2001 Eggheads",
696 egg_version);
697 /* Now add on the patchlevel (for Tcl) */
698 sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
699 strcat(egg_version, egg_xtra);
700 #ifdef STOP_UAC
701 {
702 int nvpair[2];
703
704 nvpair[0] = SSIN_UACPROC;
705 nvpair[1] = UAC_NOPRINT;
706 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
707 }
708 #endif
709
710 /* Set up error traps: */
711 sv.sa_handler = got_bus;
712 sigemptyset(&sv.sa_mask);
713 #ifdef SA_RESETHAND
714 sv.sa_flags = SA_RESETHAND;
715 #else
716 sv.sa_flags = 0;
717 #endif
718 sigaction(SIGBUS, &sv, NULL);
719 sv.sa_handler = got_segv;
720 sigaction(SIGSEGV, &sv, NULL);
721 #ifdef SA_RESETHAND
722 sv.sa_flags = 0;
723 #endif
724 sv.sa_handler = got_fpe;
725 sigaction(SIGFPE, &sv, NULL);
726 sv.sa_handler = got_term;
727 sigaction(SIGTERM, &sv, NULL);
728 sv.sa_handler = got_hup;
729 sigaction(SIGHUP, &sv, NULL);
730 sv.sa_handler = got_quit;
731 sigaction(SIGQUIT, &sv, NULL);
732 sv.sa_handler = SIG_IGN;
733 sigaction(SIGPIPE, &sv, NULL);
734 sv.sa_handler = got_ill;
735 sigaction(SIGILL, &sv, NULL);
736 sv.sa_handler = got_alarm;
737 sigaction(SIGALRM, &sv, NULL);
738
739 /* Initialize variables and stuff */
740 now = time(NULL);
741 chanset = NULL;
742 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
743 lastmin = nowtm.tm_min;
744 srandom(now % (getpid() + getppid()));
745 if (argc > 1)
746 for (i = 1; i < argc; i++)
747 do_arg(argv[i]);
748 printf("\n%s\n", version);
749
750 /* Don't allow eggdrop to run as root */
751 if (((int) getuid() == 0) || ((int) geteuid() == 0))
752 fatal(_("ERROR: Eggdrop will not run as root!"), 0);
753
754 script_init();
755 timer_init();
756 dns_init();
757 binds_init();
758 core_binds_init();
759 init_dcc_max();
760 init_userent();
761 init_misc();
762 botnet_init();
763 init_net();
764 init_modules();
765
766 if (backgrd)
767 bg_prepare_split();
768
769 init_tcl(argc, argv);
770
771 strncpyz(s, ctime(&now), sizeof s);
772 strcpy(&s[11], &s[20]);
773 putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
774 chanprog();
775 if (!encrypt_pass) {
776 printf(_("You have installed modules but have not selected an encryption\n\
777 module, please consult the default config file for info.\n"));
778 bg_send_quit(BG_ABORT);
779 exit(1);
780 }
781 i = 0;
782 for (chan = chanset; chan; chan = chan->next)
783 i++;
784 putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
785 botnetnick, i, count_users(userlist));
786 cache_miss = 0;
787 cache_hit = 0;
788 egg_snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
789
790 /* Check for pre-existing eggdrop! */
791 f = fopen(pid_file, "r");
792 if (f != NULL) {
793 fgets(s, 10, f);
794 xx = atoi(s);
795 kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
796 is used */
797 if (errno != ESRCH) {
798 printf(_("I detect %s already running from this directory.\n"), origbotname);
799 printf(_("If this is incorrect, erase the %s\n"), pid_file);
800 bg_send_quit(BG_ABORT);
801 exit(1);
802 }
803 }
804
805 /* Move into background? */
806 if (backgrd) {
807 #ifndef CYGWIN_HACKS
808 bg_do_split();
809 } else { /* !backgrd */
810 #endif
811 xx = getpid();
812 if (xx != 0) {
813 FILE *fp;
814
815 /* Write pid to file */
816 unlink(pid_file);
817 fp = fopen(pid_file, "w");
818 if (fp != NULL) {
819 fprintf(fp, "%u\n", xx);
820 if (fflush(fp)) {
821 /* Let the bot live since this doesn't appear to be a botchk */
822 printf(_("* Warning! Could not write %s file!\n"), pid_file);
823 fclose(fp);
824 unlink(pid_file);
825 } else
826 fclose(fp);
827 } else
828 printf(_("* Warning! Could not write %s file!\n"), pid_file);
829 #ifdef CYGWIN_HACKS
830 printf("Launched into the background (pid: %d)\n\n", xx);
831 #endif
832 }
833 }
834
835 use_stderr = 0; /* Stop writing to stderr now */
836 if (backgrd) {
837 /* Ok, try to disassociate from controlling terminal (finger cross) */
838 #if HAVE_SETPGID && !defined(CYGWIN_HACKS)
839 setpgid(0, 0);
840 #endif
841 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
842 freopen("/dev/null", "r", stdin);
843 freopen("/dev/null", "w", stdout);
844 freopen("/dev/null", "w", stderr);
845 #ifdef CYGWIN_HACKS
846 FreeConsole();
847 #endif
848 }
849
850 /* Terminal emulating dcc chat */
851 if (!backgrd && term_z) {
852 int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
853
854 dcc[n].addr[0] = '\0';
855 dcc[n].sock = STDOUT;
856 dcc[n].timeval = now;
857 dcc[n].u.chat->con_flags = conmask;
858 dcc[n].u.chat->strip_flags = STRIP_ALL;
859 dcc[n].status = STAT_ECHO;
860 strcpy(dcc[n].nick, "HQ");
861 strcpy(dcc[n].host, "llama@console");
862 dcc[n].user = get_user_by_handle(userlist, "HQ");
863 /* Make sure there's an innocuous HQ user if needed */
864 if (!dcc[n].user) {
865 userlist = adduser(userlist, "HQ", "none", "-", USER_PARTY);
866 dcc[n].user = get_user_by_handle(userlist, "HQ");
867 }
868 setsock(STDOUT, 0); /* Entry in net table */
869 dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
870 dcc_chatter(n);
871 }
872
873 then = now;
874 online_since = now;
875 autolink_cycle(NULL); /* Hurry and connect to tandem bots */
876 add_help_reference("cmds1.help");
877 add_help_reference("cmds2.help");
878 add_help_reference("core.help");
879 howlong.sec = 1;
880 howlong.usec = 0;
881 timer_create_repeater(&howlong, (Function) core_secondly);
882 add_hook(HOOK_MINUTELY, (Function) core_minutely);
883 add_hook(HOOK_HOURLY, (Function) core_hourly);
884 add_hook(HOOK_REHASH, (Function) event_rehash);
885 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
886 add_hook(HOOK_USERFILE, (Function) event_save);
887 add_hook(HOOK_BACKUP, (Function) backup_userfile);
888 add_hook(HOOK_DAILY, (Function) event_logfile);
889 add_hook(HOOK_DAILY, (Function) event_resettraffic);
890 add_hook(HOOK_LOADED, (Function) event_loaded);
891
892 call_hook(HOOK_LOADED);
893
894 debug0("main: entering loop");
895 while (1) {
896 int socket_cleanup = 0;
897
898 #if !defined(HAVE_PRE7_5_TCL)
899 /* Process a single tcl event */
900 Tcl_DoOneEvent(TCL_ALL_EVENTS | TCL_DONT_WAIT);
901 #endif
902
903 /* Lets move some of this here, reducing the numer of actual
904 * calls to periodic_timers
905 */
906 now = time(NULL);
907 random(); /* Woop, lets really jumble things */
908 timer_run();
909 if (now != then) { /* Once a second */
910 /* call_hook(HOOK_SECONDLY); */
911 then = now;
912 }
913
914 /* Only do this every so often. */
915 if (!socket_cleanup) {
916 socket_cleanup = 5;
917
918 /* Remove dead dcc entries. */
919 dcc_remove_lost();
920
921 /* Check for server or dcc activity. */
922 dequeue_sockets();
923 } else
924 socket_cleanup--;
925
926 /* Free unused structures. */
927 garbage_collect();
928
929 xx = sockgets(buf, &i);
930 if (xx >= 0) { /* Non-error */
931 int idx;
932
933 for (idx = 0; idx < dcc_total; idx++)
934 if (dcc[idx].sock == xx) {
935 if (dcc[idx].type && dcc[idx].type->activity) {
936 /* Traffic stats */
937 if (dcc[idx].type->name) {
938 if (!strncmp(dcc[idx].type->name, "BOT", 3))
939 itraffic_bn_today += strlen(buf) + 1;
940 else if (!strcmp(dcc[idx].type->name, "SERVER"))
941 itraffic_irc_today += strlen(buf) + 1;
942 else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
943 itraffic_dcc_today += strlen(buf) + 1;
944 else if (!strncmp(dcc[idx].type->name, "FILES", 5))
945 itraffic_dcc_today += strlen(buf) + 1;
946 else if (!strcmp(dcc[idx].type->name, "SEND"))
947 itraffic_trans_today += strlen(buf) + 1;
948 else if (!strncmp(dcc[idx].type->name, "GET", 3))
949 itraffic_trans_today += strlen(buf) + 1;
950 else
951 itraffic_unknown_today += strlen(buf) + 1;
952 }
953 dcc[idx].type->activity(idx, buf, i);
954 } else
955 putlog(LOG_MISC, "*",
956 "!!! untrapped dcc activity: type %s, sock %d",
957 dcc[idx].type->name, dcc[idx].sock);
958 break;
959 }
960 } else if (xx == -1) { /* EOF from someone */
961 int idx;
962
963 if (i == STDOUT && !backgrd)
964 fatal("END OF FILE ON TERMINAL", 0);
965 for (idx = 0; idx < dcc_total; idx++)
966 if (dcc[idx].sock == i) {
967 if (dcc[idx].type && dcc[idx].type->eof)
968 dcc[idx].type->eof(idx);
969 else {
970 putlog(LOG_MISC, "*",
971 "*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
972 i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
973 killsock(i);
974 lostdcc(idx);
975 }
976 idx = dcc_total + 1;
977 }
978 if (idx == dcc_total) {
979 putlog(LOG_MISC, "*",
980 "(@) EOF socket %d, not a dcc socket, not anything.", i);
981 close(i);
982 killsock(i);
983 }
984 } else if (xx == -2 && errno != EINTR) { /* select() error */
985 putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
986 for (i = 0; i < dcc_total; i++) {
987 if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno = EBADF)) {
988 putlog(LOG_MISC, "*",
989 "DCC socket %d (type %d, name '%s') expired -- pfft",
990 dcc[i].sock, dcc[i].type, dcc[i].nick);
991 killsock(dcc[i].sock);
992 lostdcc(i);
993 i--;
994 }
995 }
996 } else if (xx == -3) {
997 call_hook(HOOK_IDLE);
998 socket_cleanup = 0; /* If we've been idle, cleanup & flush */
999 }
1000
1001 if (do_restart) {
1002 if (do_restart == -2)
1003 rehash();
1004 else {
1005 /* Unload as many modules as possible */
1006 int f = 1;
1007 module_entry *p;
1008 Function x;
1009 char xx[256];
1010
1011 /* oops, I guess we should call this event before tcl is restarted */
1012 check_bind_event("prerestart");
1013
1014 while (f) {
1015 f = 0;
1016 for (p = module_list; p != NULL; p = p->next) {
1017 dependancy *d = dependancy_list;
1018 int ok = 1;
1019
1020 while (ok && d) {
1021 if (d->needed == p)
1022 ok = 0;
1023 d = d->next;
1024 }
1025 if (ok) {
1026 strcpy(xx, p->name);
1027 if (module_unload(xx, origbotname) == NULL) {
1028 f = 1;
1029 break;
1030 }
1031 }
1032 }
1033 }
1034 p = module_list;
1035 if (p && p->next && p->next->next)
1036 /* Should be only 2 modules now - blowfish (or some other
1037 encryption module) and eggdrop. */
1038 putlog(LOG_MISC, "*", _("Stagnant module; there WILL be memory leaks!"));
1039 flushlogs();
1040 kill_tcl();
1041 timer_destroy_all(); /* Destroy all timers. */
1042 init_tcl(argc, argv);
1043 /* We expect the encryption module as the current module pointed
1044 * to by `module_list'.
1045 */
1046 x = p->funcs[MODCALL_START];
1047 /* `NULL' indicates that we just recently restarted. The module
1048 * is expected to re-initialise as needed.
1049 */
1050 x(NULL);
1051 rehash();
1052 restart_chons();
1053 call_hook(HOOK_LOADED);
1054 }
1055 do_restart = 0;
1056 }
1057 }
1058 }

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