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Contents of /eggdrop1.9/src/main.c

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Revision 1.97 - (show annotations) (download) (as text)
Wed Oct 31 04:02:51 2001 UTC (17 years, 11 months ago) by tothwolf
Branch: MAIN
Changes since 1.96: +2 -4 lines
File MIME type: text/x-chdr
* 39 less gcc warnings...

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 1.96 2001/10/28 13:30:33 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 #include "egg_timer.h"
57 #include "core_binds.h"
58
59 #include "lib/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 Tcl_Interp *interp;
77 extern jmp_buf alarmret;
78
79
80 /*
81 * Please use the PATCH macro instead of directly altering the version
82 * string from now on (it makes it much easier to maintain patches).
83 * Also please read the README file regarding your rights to distribute
84 * modified versions of this bot.
85 */
86
87 char egg_version[1024] = VERSION;
88 int egg_numver = VERSION_NUM;
89
90 char notify_new[121] = ""; /* Person to send a note to for new users */
91 int default_flags = 0; /* Default user flags and */
92 int default_uflags = 0; /* Default userdefinied flags for people
93 who say 'hello' or for .adduser */
94
95 int backgrd = 1; /* Run in the background? */
96 int con_chan = 0; /* Foreground: constantly display channel
97 stats? */
98 int term_z = 0; /* Foreground: use the terminal as a party
99 line? */
100 char configfile[121] = "eggdrop.conf"; /* Name of the config file */
101 char helpdir[121]; /* Directory of help files (if used) */
102 char textdir[121] = ""; /* Directory for text files that get dumped */
103 time_t online_since; /* Unix-time that the bot loaded up */
104 int make_userfile = 0; /* Using bot in make-userfile mode? (first
105 user to 'hello' becomes master) */
106 char owner[121] = ""; /* Permanent owner(s) of the bot */
107 char pid_file[120]; /* Name of the file for the pid to be
108 stored in */
109 int save_users_at = 0; /* How many minutes past the hour to
110 save the userfile? */
111 int notify_users_at = 0; /* How many minutes past the hour to
112 notify users of notes? */
113 char version[81]; /* Version info (long form) */
114 char ver[41]; /* Version info (short form) */
115 char egg_xtra[2048]; /* Patch info */
116 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
117 int do_restart = 0; /* .restart has been called, restart asap */
118 int die_on_sighup = 0; /* die if bot receives SIGHUP */
119 int die_on_sigterm = 1; /* die if bot receives SIGTERM */
120 int resolve_timeout = 15; /* hostname/address lookup timeout */
121 char quit_msg[1024]; /* quit message */
122 time_t now; /* duh, now :) */
123
124 /* Traffic stats
125 */
126 unsigned long otraffic_irc = 0;
127 unsigned long otraffic_irc_today = 0;
128 unsigned long otraffic_bn = 0;
129 unsigned long otraffic_bn_today = 0;
130 unsigned long otraffic_dcc = 0;
131 unsigned long otraffic_dcc_today = 0;
132 unsigned long otraffic_filesys = 0;
133 unsigned long otraffic_filesys_today = 0;
134 unsigned long otraffic_trans = 0;
135 unsigned long otraffic_trans_today = 0;
136 unsigned long otraffic_unknown = 0;
137 unsigned long otraffic_unknown_today = 0;
138 unsigned long itraffic_irc = 0;
139 unsigned long itraffic_irc_today = 0;
140 unsigned long itraffic_bn = 0;
141 unsigned long itraffic_bn_today = 0;
142 unsigned long itraffic_dcc = 0;
143 unsigned long itraffic_dcc_today = 0;
144 unsigned long itraffic_trans = 0;
145 unsigned long itraffic_trans_today = 0;
146 unsigned long itraffic_unknown = 0;
147 unsigned long itraffic_unknown_today = 0;
148
149 #ifdef DEBUG_CONTEXT
150 /* Context storage for fatal crashes */
151 char cx_file[16][30];
152 char cx_note[16][256];
153 int cx_line[16];
154 int cx_ptr = 0;
155 #endif
156
157
158 void fatal(const char *s, int recoverable)
159 {
160 int i;
161
162 putlog(LOG_MISC, "*", "* %s", s);
163 flushlogs();
164 for (i = 0; i < dcc_total; i++)
165 if (dcc[i].sock >= 0)
166 killsock(dcc[i].sock);
167 unlink(pid_file);
168 if (!recoverable) {
169 bg_send_quit(BG_ABORT);
170 exit(1);
171 }
172 }
173
174 static void check_expired_dcc()
175 {
176 int i;
177
178 for (i = 0; i < dcc_total; i++)
179 if (dcc[i].type && dcc[i].type->timeout_val &&
180 ((now - dcc[i].timeval) > *(dcc[i].type->timeout_val))) {
181 if (dcc[i].type->timeout)
182 dcc[i].type->timeout(i);
183 else if (dcc[i].type->eof)
184 dcc[i].type->eof(i);
185 else
186 continue;
187 /* Only timeout 1 socket per cycle, too risky for more */
188 return;
189 }
190 }
191
192 #ifdef DEBUG_CONTEXT
193 static int nested_debug = 0;
194
195 void write_debug()
196 {
197 int x;
198 char s[25];
199 int y;
200
201 if (nested_debug) {
202 /* Yoicks, if we have this there's serious trouble!
203 * All of these are pretty reliable, so we'll try these.
204 *
205 * NOTE: dont try and display context-notes in here, it's
206 * _not_ safe <cybah>
207 */
208 x = creat("DEBUG.DEBUG", 0644);
209 setsock(x, SOCK_NONSOCK);
210 if (x >= 0) {
211 strncpyz(s, ctime(&now), sizeof s);
212 dprintf(-x, "Debug (%s) written %s\n", ver, s);
213 dprintf(-x, "Please report problem to bugs@eggheads.org\n");
214 dprintf(-x, "after a visit to http://www.eggheads.org/bugzilla/\n");
215 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
216 dprintf(-x, "Context: ");
217 cx_ptr = cx_ptr & 15;
218 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
219 dprintf(-x, "%s/%d,\n ", cx_file[y], cx_line[y]);
220 dprintf(-x, "%s/%d\n\n", cx_file[y], cx_line[y]);
221 killsock(x);
222 close(x);
223 }
224 bg_send_quit(BG_ABORT);
225 exit(1); /* Dont even try & tell people about, that may
226 have caused the fault last time. */
227 } else
228 nested_debug = 1;
229 putlog(LOG_MISC, "*", "* Last context: %s/%d [%s]", cx_file[cx_ptr],
230 cx_line[cx_ptr], cx_note[cx_ptr][0] ? cx_note[cx_ptr] : "");
231 putlog(LOG_MISC, "*", "* Please REPORT this BUG!");
232 putlog(LOG_MISC, "*", "* Check doc/BUG-REPORT on how to do so.");
233 x = creat("DEBUG", 0644);
234 setsock(x, SOCK_NONSOCK);
235 if (x < 0) {
236 putlog(LOG_MISC, "*", "* Failed to write DEBUG");
237 } else {
238 strncpyz(s, ctime(&now), sizeof s);
239 dprintf(-x, "Debug (%s) written %s\n", ver, s);
240 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
241 #ifdef STATIC
242 dprintf(-x, "STATICALLY LINKED\n");
243 #endif
244
245 /* info library */
246 dprintf(-x, "TCL library: %s\n",
247 ((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
248 interp->result : "*unknown*");
249
250 /* info tclversion/patchlevel */
251 dprintf(-x, "TCL version: %s (header version %s)\n",
252 ((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
253 interp->result : (Tcl_Eval(interp, "info tclversion") == TCL_OK) ?
254 interp->result : "*unknown*", TCL_PATCH_LEVEL ? TCL_PATCH_LEVEL :
255 "*unknown*");
256
257 #if HAVE_TCL_THREADS
258 dprintf(-x, "TCL is threaded\n");
259 #endif
260
261 #ifdef CCFLAGS
262 dprintf(-x, "Compile flags: %s\n", CCFLAGS);
263 #endif
264 #ifdef LDFLAGS
265 dprintf(-x, "Link flags: %s\n", LDFLAGS);
266 #endif
267 #ifdef STRIPFLAGS
268 dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
269 #endif
270
271 dprintf(-x, "Context: ");
272 cx_ptr = cx_ptr & 15;
273 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
274 dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
275 (cx_note[y][0]) ? cx_note[y] : "");
276 dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
277 (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
278 tell_dcc(-x);
279 dprintf(-x, "\n");
280 tell_netdebug(-x);
281 killsock(x);
282 close(x);
283 putlog(LOG_MISC, "*", "* Wrote DEBUG");
284 }
285 }
286 #endif
287
288 static void got_bus(int z)
289 {
290 #ifdef DEBUG_CONTEXT
291 write_debug();
292 #endif
293 fatal("BUS ERROR -- CRASHING!", 1);
294 #ifdef SA_RESETHAND
295 kill(getpid(), SIGBUS);
296 #else
297 bg_send_quit(BG_ABORT);
298 exit(1);
299 #endif
300 }
301
302 static void got_segv(int z)
303 {
304 #ifdef DEBUG_CONTEXT
305 write_debug();
306 #endif
307 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
308 #ifdef SA_RESETHAND
309 kill(getpid(), SIGSEGV);
310 #else
311 bg_send_quit(BG_ABORT);
312 exit(1);
313 #endif
314 }
315
316 static void got_fpe(int z)
317 {
318 #ifdef DEBUG_CONTEXT
319 write_debug();
320 #endif
321 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
322 }
323
324 static void got_term(int z)
325 {
326 write_userfile(-1);
327 check_bind_event("sigterm");
328 if (die_on_sigterm) {
329 fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
330 } else {
331 putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
332 }
333 }
334
335 static void got_quit(int z)
336 {
337 check_bind_event("sigquit");
338 putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
339 return;
340 }
341
342 static void got_hup(int z)
343 {
344 write_userfile(-1);
345 check_bind_event("sighup");
346 if (die_on_sighup) {
347 fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
348 } else
349 putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
350 do_restart = -2;
351 return;
352 }
353
354 /* A call to resolver (gethostbyname, etc) timed out
355 */
356 static void got_alarm(int z)
357 {
358 longjmp(alarmret, 1);
359
360 /* -Never reached- */
361 }
362
363 /* Got ILL signal -- log context and continue
364 */
365 static void got_ill(int z)
366 {
367 check_bind_event("sigill");
368 #ifdef DEBUG_CONTEXT
369 putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
370 cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
371 #endif
372 }
373
374 #ifdef DEBUG_CONTEXT
375 /* Context */
376 void eggContext(const char *file, int line, const char *module)
377 {
378 char x[31], *p;
379
380 p = strrchr(file, '/');
381 if (!module) {
382 strncpyz(x, p ? p + 1 : file, sizeof x);
383 } else
384 snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
385 cx_ptr = ((cx_ptr + 1) & 15);
386 strcpy(cx_file[cx_ptr], x);
387 cx_line[cx_ptr] = line;
388 cx_note[cx_ptr][0] = 0;
389 }
390
391 /* Called from the ContextNote macro.
392 */
393 void eggContextNote(const char *file, int line, const char *module,
394 const char *note)
395 {
396 char x[31], *p;
397
398 p = strrchr(file, '/');
399 if (!module) {
400 strncpyz(x, p ? p + 1 : file, sizeof x);
401 } else
402 snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
403 cx_ptr = ((cx_ptr + 1) & 15);
404 strcpy(cx_file[cx_ptr], x);
405 cx_line[cx_ptr] = line;
406 strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
407 }
408 #endif
409
410 static void do_arg(char *s)
411 {
412 char x[1024], *z = x;
413 int i;
414
415 if (s[0] == '-')
416 for (i = 1; i < strlen(s); i++) {
417 switch (s[i]) {
418 case 'n':
419 backgrd = 0;
420 break;
421 case 'c':
422 con_chan = 1;
423 term_z = 0;
424 break;
425 case 't':
426 con_chan = 0;
427 term_z = 1;
428 break;
429 case 'm':
430 make_userfile = 1;
431 break;
432 case 'v':
433 strncpyz(x, egg_version, sizeof x);
434 newsplit(&z);
435 newsplit(&z);
436 printf("%s\n", version);
437 if (z[0])
438 printf(" (patches: %s)\n", z);
439 bg_send_quit(BG_ABORT);
440 exit(0);
441 break; /* this should never be reached */
442 case 'h':
443 printf("\n%s\n\n", version);
444 printf(_("Command line arguments:\n\
445 -h help\n\
446 -v print version and exit\n\
447 -n don't go into the background\n\
448 -c (with -n) display channel stats every 10 seconds\n\
449 -t (with -n) use terminal to simulate dcc-chat\n\
450 -m userfile creation mode\n\
451 optional config filename (default 'eggdrop.conf')\n"));
452 printf("\n");
453 bg_send_quit(BG_ABORT);
454 exit(0);
455 break; /* this should never be reached */
456 }
457 } else
458 strncpyz(configfile, s, sizeof configfile);
459 }
460
461 void backup_userfile(void)
462 {
463 char s[125];
464
465 putlog(LOG_MISC, "*", _("Backing up user file..."));
466 snprintf(s, sizeof s, "%s~bak", userfile);
467 copyfile(userfile, s);
468 }
469
470 /* Timer info */
471 static int lastmin = 99;
472 static time_t then;
473 static struct tm nowtm;
474
475 /* Called once a second.
476 *
477 * Note: Try to not put any Context lines in here (guppy 21Mar2000).
478 */
479 static void core_secondly()
480 {
481 static int cnt = 0;
482 int miltime;
483
484 call_hook(HOOK_SECONDLY); /* Will be removed later */
485 cnt++;
486 if (cnt >= 10) { /* Every 10 seconds */
487 cnt = 0;
488 check_expired_dcc();
489 if (con_chan && !backgrd) {
490 dprintf(DP_STDOUT, "\033[2J\033[1;1H");
491 tell_verbose_status(DP_STDOUT);
492 do_module_report(DP_STDOUT, 0, "server");
493 do_module_report(DP_STDOUT, 0, "channels");
494 }
495 }
496 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
497 if (nowtm.tm_min != lastmin) {
498 int i = 0;
499
500 /* Once a minute */
501 lastmin = (lastmin + 1) % 60;
502 call_hook(HOOK_MINUTELY);
503 check_expired_ignores();
504 autolink_cycle(NULL); /* Attempt autolinks */
505 /* In case for some reason more than 1 min has passed: */
506 while (nowtm.tm_min != lastmin) {
507 /* Timer drift, dammit */
508 debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
509 i++;
510 lastmin = (lastmin + 1) % 60;
511 call_hook(HOOK_MINUTELY);
512 }
513 if (i > 1)
514 putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
515 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
516 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
517 call_hook(HOOK_5MINUTELY);
518 if (!miltime) { /* At midnight */
519 char s[25];
520
521 strncpyz(s, ctime(&now), sizeof s);
522 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
523 call_hook(HOOK_BACKUP);
524 call_hook(HOOK_DAILY);
525 }
526 }
527 if (nowtm.tm_min == notify_users_at)
528 call_hook(HOOK_HOURLY);
529 }
530 }
531
532 static void core_minutely()
533 {
534 check_bind_time(&nowtm);
535 }
536
537 static void core_hourly()
538 {
539 write_userfile(-1);
540 }
541
542 static void event_rehash()
543 {
544 check_bind_event("rehash");
545 }
546
547 static void event_prerehash()
548 {
549 check_bind_event("prerehash");
550 }
551
552 static void event_save()
553 {
554 check_bind_event("save");
555 }
556
557 static void event_logfile()
558 {
559 check_bind_event("logfile");
560 }
561
562 static void event_resettraffic()
563 {
564 otraffic_irc += otraffic_irc_today;
565 itraffic_irc += itraffic_irc_today;
566 otraffic_bn += otraffic_bn_today;
567 itraffic_bn += itraffic_bn_today;
568 otraffic_dcc += otraffic_dcc_today;
569 itraffic_dcc += itraffic_dcc_today;
570 otraffic_unknown += otraffic_unknown_today;
571 itraffic_unknown += itraffic_unknown_today;
572 otraffic_trans += otraffic_trans_today;
573 itraffic_trans += itraffic_trans_today;
574 otraffic_irc_today = otraffic_bn_today = 0;
575 otraffic_dcc_today = otraffic_unknown_today = 0;
576 itraffic_irc_today = itraffic_bn_today = 0;
577 itraffic_dcc_today = itraffic_unknown_today = 0;
578 itraffic_trans_today = otraffic_trans_today = 0;
579 }
580
581 static void event_loaded()
582 {
583 check_bind_event("loaded");
584 }
585
586 void kill_tcl();
587 extern module_entry *module_list;
588 void restart_chons();
589
590 int init_userent(), init_net(),
591 init_modules(), init_tcl(int, char **);
592 void timer_init();
593 void logfile_init();
594 void botnet_init();
595 void dns_init();
596 void script_init();
597 void binds_init();
598 void dcc_init();
599
600 void patch(const char *str)
601 {
602 char *p = strchr(egg_version, '+');
603
604 if (!p)
605 p = &egg_version[strlen(egg_version)];
606 sprintf(p, "+%s", str);
607 egg_numver++;
608 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
609 }
610
611 static inline void garbage_collect(void)
612 {
613 static u_8bit_t run_cnt = 0;
614
615 if (run_cnt == 3)
616 garbage_collect_tclhash();
617 else
618 run_cnt++;
619 }
620
621 int main(int argc, char **argv)
622 {
623 int xx, i;
624 char buf[520], s[25];
625 FILE *f;
626 struct sigaction sv;
627 struct chanset_t *chan;
628 egg_timeval_t howlong;
629
630 #ifdef DEBUG
631 /* Make sure it can write core, if you make debug. Else it's pretty
632 * useless (dw)
633 */
634 {
635 #include <sys/resource.h>
636 struct rlimit cdlim;
637
638 cdlim.rlim_cur = RLIM_INFINITY;
639 cdlim.rlim_max = RLIM_INFINITY;
640 setrlimit(RLIMIT_CORE, &cdlim);
641 }
642 #endif
643
644 /* Initialise context list */
645 for (i = 0; i < 16; i++)
646 Context;
647
648 setlocale(LC_MESSAGES, "");
649 bindtextdomain(PACKAGE, LOCALEDIR);
650 textdomain(PACKAGE);
651
652 #include "patch.h"
653 /* Version info! */
654 snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
655 snprintf(version, sizeof version, "Eggdrop v%s (C)1997 Robey Pointer (C)2001 Eggheads",
656 egg_version);
657 /* Now add on the patchlevel (for Tcl) */
658 sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
659 strcat(egg_version, egg_xtra);
660 #ifdef STOP_UAC
661 {
662 int nvpair[2];
663
664 nvpair[0] = SSIN_UACPROC;
665 nvpair[1] = UAC_NOPRINT;
666 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
667 }
668 #endif
669
670 /* Set up error traps: */
671 sv.sa_handler = got_bus;
672 sigemptyset(&sv.sa_mask);
673 #ifdef SA_RESETHAND
674 sv.sa_flags = SA_RESETHAND;
675 #else
676 sv.sa_flags = 0;
677 #endif
678 sigaction(SIGBUS, &sv, NULL);
679 sv.sa_handler = got_segv;
680 sigaction(SIGSEGV, &sv, NULL);
681 #ifdef SA_RESETHAND
682 sv.sa_flags = 0;
683 #endif
684 sv.sa_handler = got_fpe;
685 sigaction(SIGFPE, &sv, NULL);
686 sv.sa_handler = got_term;
687 sigaction(SIGTERM, &sv, NULL);
688 sv.sa_handler = got_hup;
689 sigaction(SIGHUP, &sv, NULL);
690 sv.sa_handler = got_quit;
691 sigaction(SIGQUIT, &sv, NULL);
692 sv.sa_handler = SIG_IGN;
693 sigaction(SIGPIPE, &sv, NULL);
694 sv.sa_handler = got_ill;
695 sigaction(SIGILL, &sv, NULL);
696 sv.sa_handler = got_alarm;
697 sigaction(SIGALRM, &sv, NULL);
698
699 /* Initialize variables and stuff */
700 now = time(NULL);
701 chanset = NULL;
702 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
703 lastmin = nowtm.tm_min;
704 srandom(now % (getpid() + getppid()));
705 if (argc > 1)
706 for (i = 1; i < argc; i++)
707 do_arg(argv[i]);
708 printf("\n%s\n", version);
709 printf(" *** WARNING: Do NOT run this DEVELOPMENT version for any purpose other than testing.\n\n");
710
711 /* Don't allow eggdrop to run as root */
712 if (((int) getuid() == 0) || ((int) geteuid() == 0))
713 fatal(_("ERROR: Eggdrop will not run as root!"), 0);
714
715 script_init();
716 logfile_init();
717 timer_init();
718 dns_init();
719 binds_init();
720 core_binds_init();
721 dcc_init();
722 init_userent();
723 botnet_init();
724 init_net();
725 init_modules();
726
727 if (backgrd)
728 bg_prepare_split();
729
730 init_tcl(argc, argv);
731
732 strncpyz(s, ctime(&now), sizeof s);
733 strcpy(&s[11], &s[20]);
734 putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
735 chanprog();
736 if (!encrypt_pass) {
737 printf(_("You have installed modules but have not selected an encryption\n\
738 module, please consult the default config file for info.\n"));
739 bg_send_quit(BG_ABORT);
740 exit(1);
741 }
742 i = 0;
743 for (chan = chanset; chan; chan = chan->next)
744 i++;
745 putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
746 botnetnick, i, count_users(userlist));
747 cache_miss = 0;
748 cache_hit = 0;
749
750 if (!pid_file[0])
751 snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
752
753 /* Check for pre-existing eggdrop! */
754 f = fopen(pid_file, "r");
755 if (f != NULL) {
756 fgets(s, 10, f);
757 xx = atoi(s);
758 kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
759 is used */
760 if (errno != ESRCH) {
761 printf(_("I detect %s already running from this directory.\n"), origbotname);
762 printf(_("If this is incorrect, erase the %s\n"), pid_file);
763 bg_send_quit(BG_ABORT);
764 exit(1);
765 }
766 }
767
768 /* Move into background? */
769 if (backgrd) {
770 #ifndef CYGWIN_HACKS
771 bg_do_split();
772 } else { /* !backgrd */
773 #endif
774 xx = getpid();
775 if (xx != 0) {
776 FILE *fp;
777
778 /* Write pid to file */
779 unlink(pid_file);
780 fp = fopen(pid_file, "w");
781 if (fp != NULL) {
782 fprintf(fp, "%u\n", xx);
783 if (fflush(fp)) {
784 /* Let the bot live since this doesn't appear to be a botchk */
785 printf(_("* Warning! Could not write %s file!\n"), pid_file);
786 fclose(fp);
787 unlink(pid_file);
788 } else
789 fclose(fp);
790 } else
791 printf(_("* Warning! Could not write %s file!\n"), pid_file);
792 #ifdef CYGWIN_HACKS
793 printf("Launched into the background (pid: %d)\n\n", xx);
794 #endif
795 }
796 }
797
798 use_stderr = 0; /* Stop writing to stderr now */
799 if (backgrd) {
800 /* Ok, try to disassociate from controlling terminal (finger cross) */
801 #if HAVE_SETPGID && !defined(CYGWIN_HACKS)
802 setpgid(0, 0);
803 #endif
804 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
805 freopen("/dev/null", "r", stdin);
806 freopen("/dev/null", "w", stdout);
807 freopen("/dev/null", "w", stderr);
808 #ifdef CYGWIN_HACKS
809 FreeConsole();
810 #endif
811 }
812
813 /* Terminal emulating dcc chat */
814 if (!backgrd && term_z) {
815 int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
816
817 dcc[n].addr[0] = '\0';
818 dcc[n].sock = STDOUT;
819 dcc[n].timeval = now;
820 dcc[n].u.chat->con_flags = conmask;
821 dcc[n].u.chat->strip_flags = STRIP_ALL;
822 dcc[n].status = STAT_ECHO;
823 strcpy(dcc[n].nick, "HQ");
824 strcpy(dcc[n].host, "llama@console");
825 dcc[n].user = get_user_by_handle(userlist, "HQ");
826 /* Make sure there's an innocuous HQ user if needed */
827 if (!dcc[n].user) {
828 userlist = adduser(userlist, "HQ", "none", "-", USER_PARTY);
829 dcc[n].user = get_user_by_handle(userlist, "HQ");
830 }
831 setsock(STDOUT, 0); /* Entry in net table */
832 dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
833 dcc_chatter(n);
834 }
835
836 then = now;
837 online_since = now;
838 autolink_cycle(NULL); /* Hurry and connect to tandem bots */
839 add_help_reference("cmds1.help");
840 add_help_reference("cmds2.help");
841 add_help_reference("core.help");
842 howlong.sec = 1;
843 howlong.usec = 0;
844 timer_create_repeater(&howlong, (Function) core_secondly);
845 add_hook(HOOK_MINUTELY, (Function) core_minutely);
846 add_hook(HOOK_HOURLY, (Function) core_hourly);
847 add_hook(HOOK_REHASH, (Function) event_rehash);
848 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
849 add_hook(HOOK_USERFILE, (Function) event_save);
850 add_hook(HOOK_BACKUP, (Function) backup_userfile);
851 add_hook(HOOK_DAILY, (Function) event_logfile);
852 add_hook(HOOK_DAILY, (Function) event_resettraffic);
853 add_hook(HOOK_LOADED, (Function) event_loaded);
854
855 call_hook(HOOK_LOADED);
856
857 debug0("main: entering loop");
858 while (1) {
859 int socket_cleanup = 0;
860
861 #if !defined(HAVE_PRE7_5_TCL)
862 /* Process a single tcl event */
863 Tcl_DoOneEvent(TCL_ALL_EVENTS | TCL_DONT_WAIT);
864 #endif
865
866 /* Lets move some of this here, reducing the numer of actual
867 * calls to periodic_timers
868 */
869 now = time(NULL);
870 random(); /* Woop, lets really jumble things */
871 timer_run();
872 if (now != then) { /* Once a second */
873 /* call_hook(HOOK_SECONDLY); */
874 then = now;
875 }
876
877 /* Only do this every so often. */
878 if (!socket_cleanup) {
879 socket_cleanup = 5;
880
881 /* Remove dead dcc entries. */
882 dcc_remove_lost();
883
884 /* Check for server or dcc activity. */
885 dequeue_sockets();
886 } else
887 socket_cleanup--;
888
889 /* Free unused structures. */
890 garbage_collect();
891
892 xx = sockgets(buf, &i);
893 if (xx >= 0) { /* Non-error */
894 int idx;
895
896 for (idx = 0; idx < dcc_total; idx++)
897 if (dcc[idx].sock == xx) {
898 if (dcc[idx].type && dcc[idx].type->activity) {
899 /* Traffic stats */
900 if (dcc[idx].type->name) {
901 if (!strncmp(dcc[idx].type->name, "BOT", 3))
902 itraffic_bn_today += strlen(buf) + 1;
903 else if (!strcmp(dcc[idx].type->name, "SERVER"))
904 itraffic_irc_today += strlen(buf) + 1;
905 else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
906 itraffic_dcc_today += strlen(buf) + 1;
907 else if (!strncmp(dcc[idx].type->name, "FILES", 5))
908 itraffic_dcc_today += strlen(buf) + 1;
909 else if (!strcmp(dcc[idx].type->name, "SEND"))
910 itraffic_trans_today += strlen(buf) + 1;
911 else if (!strncmp(dcc[idx].type->name, "GET", 3))
912 itraffic_trans_today += strlen(buf) + 1;
913 else
914 itraffic_unknown_today += strlen(buf) + 1;
915 }
916 dcc[idx].type->activity(idx, buf, i);
917 } else
918 putlog(LOG_MISC, "*",
919 "!!! untrapped dcc activity: type %s, sock %d",
920 dcc[idx].type->name, dcc[idx].sock);
921 break;
922 }
923 } else if (xx == -1) { /* EOF from someone */
924 int idx;
925
926 if (i == STDOUT && !backgrd)
927 fatal("END OF FILE ON TERMINAL", 0);
928 for (idx = 0; idx < dcc_total; idx++)
929 if (dcc[idx].sock == i) {
930 if (dcc[idx].type && dcc[idx].type->eof)
931 dcc[idx].type->eof(idx);
932 else {
933 putlog(LOG_MISC, "*",
934 "*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
935 i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
936 killsock(i);
937 lostdcc(idx);
938 }
939 idx = dcc_total + 1;
940 }
941 if (idx == dcc_total) {
942 putlog(LOG_MISC, "*",
943 "(@) EOF socket %d, not a dcc socket, not anything.", i);
944 close(i);
945 killsock(i);
946 }
947 } else if (xx == -2 && errno != EINTR) { /* select() error */
948 putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
949 for (i = 0; i < dcc_total; i++) {
950 if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno = EBADF)) {
951 putlog(LOG_MISC, "*",
952 "DCC socket %d (type %d, name '%s') expired -- pfft",
953 dcc[i].sock, dcc[i].type, dcc[i].nick);
954 killsock(dcc[i].sock);
955 lostdcc(i);
956 i--;
957 }
958 }
959 } else if (xx == -3) {
960 call_hook(HOOK_IDLE);
961 socket_cleanup = 0; /* If we've been idle, cleanup & flush */
962 }
963
964 if (do_restart) {
965 if (do_restart == -2)
966 rehash();
967 else {
968 /* Unload as many modules as possible */
969 int f = 1;
970 module_entry *p;
971 Function x;
972 char xx[256];
973
974 /* oops, I guess we should call this event before tcl is restarted */
975 check_bind_event("prerestart");
976
977 while (f) {
978 f = 0;
979 for (p = module_list; p != NULL; p = p->next) {
980 dependancy *d = dependancy_list;
981 int ok = 1;
982
983 while (ok && d) {
984 if (d->needed == p)
985 ok = 0;
986 d = d->next;
987 }
988 if (ok) {
989 strcpy(xx, p->name);
990 if (module_unload(xx, origbotname) == NULL) {
991 f = 1;
992 break;
993 }
994 }
995 }
996 }
997 p = module_list;
998 if (p && p->next && p->next->next)
999 /* Should be only 2 modules now - blowfish (or some other
1000 encryption module) and eggdrop. */
1001 putlog(LOG_MISC, "*", _("Stagnant module; there WILL be memory leaks!"));
1002 flushlogs();
1003 kill_tcl();
1004 timer_destroy_all(); /* Destroy all timers. */
1005 init_tcl(argc, argv);
1006 /* We expect the encryption module as the current module pointed
1007 * to by `module_list'.
1008 */
1009 x = p->funcs[MODCALL_START];
1010 /* `NULL' indicates that we just recently restarted. The module
1011 * is expected to re-initialise as needed.
1012 */
1013 x(NULL);
1014 rehash();
1015 restart_chons();
1016 call_hook(HOOK_LOADED);
1017 }
1018 do_restart = 0;
1019 }
1020 }
1021 }

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