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

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Revision 1.81 - (show annotations) (download) (as text)
Fri Oct 12 15:50:26 2001 UTC (18 years ago) by tothwolf
Branch: MAIN
Changes since 1.80: +2 -18 lines
File MIME type: text/x-chdr
* DEBUG_ASSERT renamed to DEBUG
* Assert macro removed, replaced with ANSI assert support
* Removed more kludge code

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 1.80 2001/10/12 02:27:45 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
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 static void check_expired_dcc()
180 {
181 int i;
182
183 for (i = 0; i < dcc_total; i++)
184 if (dcc[i].type && dcc[i].type->timeout_val &&
185 ((now - dcc[i].timeval) > *(dcc[i].type->timeout_val))) {
186 if (dcc[i].type->timeout)
187 dcc[i].type->timeout(i);
188 else if (dcc[i].type->eof)
189 dcc[i].type->eof(i);
190 else
191 continue;
192 /* Only timeout 1 socket per cycle, too risky for more */
193 return;
194 }
195 }
196
197 #ifdef DEBUG_CONTEXT
198 static int nested_debug = 0;
199
200 void write_debug()
201 {
202 int x;
203 char s[25];
204 int y;
205
206 if (nested_debug) {
207 /* Yoicks, if we have this there's serious trouble!
208 * All of these are pretty reliable, so we'll try these.
209 *
210 * NOTE: dont try and display context-notes in here, it's
211 * _not_ safe <cybah>
212 */
213 x = creat("DEBUG.DEBUG", 0644);
214 setsock(x, SOCK_NONSOCK);
215 if (x >= 0) {
216 strncpyz(s, ctime(&now), sizeof s);
217 dprintf(-x, "Debug (%s) written %s\n", ver, s);
218 dprintf(-x, "Please report problem to bugs@eggheads.org\n");
219 dprintf(-x, "after a visit to http://www.eggheads.org/bugzilla/\n");
220 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
221 dprintf(-x, "Context: ");
222 cx_ptr = cx_ptr & 15;
223 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
224 dprintf(-x, "%s/%d,\n ", cx_file[y], cx_line[y]);
225 dprintf(-x, "%s/%d\n\n", cx_file[y], cx_line[y]);
226 killsock(x);
227 close(x);
228 }
229 bg_send_quit(BG_ABORT);
230 exit(1); /* Dont even try & tell people about, that may
231 have caused the fault last time. */
232 } else
233 nested_debug = 1;
234 putlog(LOG_MISC, "*", "* Last context: %s/%d [%s]", cx_file[cx_ptr],
235 cx_line[cx_ptr], cx_note[cx_ptr][0] ? cx_note[cx_ptr] : "");
236 putlog(LOG_MISC, "*", "* Please REPORT this BUG!");
237 putlog(LOG_MISC, "*", "* Check doc/BUG-REPORT on how to do so.");
238 x = creat("DEBUG", 0644);
239 setsock(x, SOCK_NONSOCK);
240 if (x < 0) {
241 putlog(LOG_MISC, "*", "* Failed to write DEBUG");
242 } else {
243 strncpyz(s, ctime(&now), sizeof s);
244 dprintf(-x, "Debug (%s) written %s\n", ver, s);
245 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
246 #ifdef STATIC
247 dprintf(-x, "STATICALLY LINKED\n");
248 #endif
249
250 /* info library */
251 dprintf(-x, "TCL library: %s\n",
252 ((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
253 interp->result : "*unknown*");
254
255 /* info tclversion/patchlevel */
256 dprintf(-x, "TCL version: %s (header version %s)\n",
257 ((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
258 interp->result : (Tcl_Eval(interp, "info tclversion") == TCL_OK) ?
259 interp->result : "*unknown*", TCL_PATCH_LEVEL ? TCL_PATCH_LEVEL :
260 "*unknown*");
261
262 #if HAVE_TCL_THREADS
263 dprintf(-x, "TCL is threaded\n");
264 #endif
265
266 #ifdef CCFLAGS
267 dprintf(-x, "Compile flags: %s\n", CCFLAGS);
268 #endif
269 #ifdef LDFLAGS
270 dprintf(-x, "Link flags: %s\n", LDFLAGS);
271 #endif
272 #ifdef STRIPFLAGS
273 dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
274 #endif
275
276 dprintf(-x, "Context: ");
277 cx_ptr = cx_ptr & 15;
278 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
279 dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
280 (cx_note[y][0]) ? cx_note[y] : "");
281 dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
282 (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
283 tell_dcc(-x);
284 dprintf(-x, "\n");
285 tell_netdebug(-x);
286 killsock(x);
287 close(x);
288 putlog(LOG_MISC, "*", "* Wrote DEBUG");
289 }
290 }
291 #endif
292
293 static void got_bus(int z)
294 {
295 #ifdef DEBUG_CONTEXT
296 write_debug();
297 #endif
298 fatal("BUS ERROR -- CRASHING!", 1);
299 #ifdef SA_RESETHAND
300 kill(getpid(), SIGBUS);
301 #else
302 bg_send_quit(BG_ABORT);
303 exit(1);
304 #endif
305 }
306
307 static void got_segv(int z)
308 {
309 #ifdef DEBUG_CONTEXT
310 write_debug();
311 #endif
312 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
313 #ifdef SA_RESETHAND
314 kill(getpid(), SIGSEGV);
315 #else
316 bg_send_quit(BG_ABORT);
317 exit(1);
318 #endif
319 }
320
321 static void got_fpe(int z)
322 {
323 #ifdef DEBUG_CONTEXT
324 write_debug();
325 #endif
326 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
327 }
328
329 static void got_term(int z)
330 {
331 write_userfile(-1);
332 check_tcl_event("sigterm");
333 if (die_on_sigterm) {
334 fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
335 } else {
336 putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
337 }
338 }
339
340 static void got_quit(int z)
341 {
342 check_tcl_event("sigquit");
343 putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
344 return;
345 }
346
347 static void got_hup(int z)
348 {
349 write_userfile(-1);
350 check_tcl_event("sighup");
351 if (die_on_sighup) {
352 fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
353 } else
354 putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
355 do_restart = -2;
356 return;
357 }
358
359 /* A call to resolver (gethostbyname, etc) timed out
360 */
361 static void got_alarm(int z)
362 {
363 longjmp(alarmret, 1);
364
365 /* -Never reached- */
366 }
367
368 /* Got ILL signal -- log context and continue
369 */
370 static void got_ill(int z)
371 {
372 check_tcl_event("sigill");
373 #ifdef DEBUG_CONTEXT
374 putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
375 cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
376 #endif
377 }
378
379 #ifdef DEBUG_CONTEXT
380 /* Context */
381 void eggContext(const char *file, int line, const char *module)
382 {
383 char x[31], *p;
384
385 p = strrchr(file, '/');
386 if (!module) {
387 strncpyz(x, p ? p + 1 : file, sizeof x);
388 } else
389 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
390 cx_ptr = ((cx_ptr + 1) & 15);
391 strcpy(cx_file[cx_ptr], x);
392 cx_line[cx_ptr] = line;
393 cx_note[cx_ptr][0] = 0;
394 }
395
396 /* Called from the ContextNote macro.
397 */
398 void eggContextNote(const char *file, int line, const char *module,
399 const char *note)
400 {
401 char x[31], *p;
402
403 p = strrchr(file, '/');
404 if (!module) {
405 strncpyz(x, p ? p + 1 : file, sizeof x);
406 } else
407 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
408 cx_ptr = ((cx_ptr + 1) & 15);
409 strcpy(cx_file[cx_ptr], x);
410 cx_line[cx_ptr] = line;
411 strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
412 }
413 #endif
414
415 static void do_arg(char *s)
416 {
417 char x[1024], *z = x;
418 int i;
419
420 if (s[0] == '-')
421 for (i = 1; i < strlen(s); i++) {
422 switch (s[i]) {
423 case 'n':
424 backgrd = 0;
425 break;
426 case 'c':
427 con_chan = 1;
428 term_z = 0;
429 break;
430 case 't':
431 con_chan = 0;
432 term_z = 1;
433 break;
434 case 'm':
435 make_userfile = 1;
436 break;
437 case 'v':
438 strncpyz(x, egg_version, sizeof x);
439 newsplit(&z);
440 newsplit(&z);
441 printf("%s\n", version);
442 if (z[0])
443 printf(" (patches: %s)\n", z);
444 bg_send_quit(BG_ABORT);
445 exit(0);
446 break; /* this should never be reached */
447 case 'h':
448 printf("\n%s\n\n", version);
449 printf(_("Command line arguments:\n\
450 -h help\n\
451 -v print version and exit\n\
452 -n don't go into the background\n\
453 -c (with -n) display channel stats every 10 seconds\n\
454 -t (with -n) use terminal to simulate dcc-chat\n\
455 -m userfile creation mode\n\
456 optional config filename (default 'eggdrop.conf')\n"));
457 printf("\n");
458 bg_send_quit(BG_ABORT);
459 exit(0);
460 break; /* this should never be reached */
461 }
462 } else
463 strncpyz(configfile, s, sizeof configfile);
464 }
465
466 void backup_userfile(void)
467 {
468 char s[125];
469
470 putlog(LOG_MISC, "*", _("Backing up user file..."));
471 egg_snprintf(s, sizeof s, "%s~bak", userfile);
472 copyfile(userfile, s);
473 }
474
475 /* Timer info */
476 static int lastmin = 99;
477 static time_t then;
478 static struct tm nowtm;
479
480 /* Called once a second.
481 *
482 * Note: Try to not put any Context lines in here (guppy 21Mar2000).
483 */
484 static void core_secondly()
485 {
486 static int cnt = 0;
487 int miltime;
488
489 do_check_timers(&utimer); /* Secondly timers */
490 cnt++;
491 if (cnt >= 10) { /* Every 10 seconds */
492 cnt = 0;
493 check_expired_dcc();
494 if (con_chan && !backgrd) {
495 dprintf(DP_STDOUT, "\033[2J\033[1;1H");
496 tell_verbose_status(DP_STDOUT);
497 do_module_report(DP_STDOUT, 0, "server");
498 do_module_report(DP_STDOUT, 0, "channels");
499 }
500 }
501 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
502 if (nowtm.tm_min != lastmin) {
503 int i = 0;
504
505 /* Once a minute */
506 lastmin = (lastmin + 1) % 60;
507 call_hook(HOOK_MINUTELY);
508 check_expired_ignores();
509 autolink_cycle(NULL); /* Attempt autolinks */
510 /* In case for some reason more than 1 min has passed: */
511 while (nowtm.tm_min != lastmin) {
512 /* Timer drift, dammit */
513 debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
514 i++;
515 lastmin = (lastmin + 1) % 60;
516 call_hook(HOOK_MINUTELY);
517 }
518 if (i > 1)
519 putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
520 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
521 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
522 call_hook(HOOK_5MINUTELY);
523 if (!quick_logs) {
524 flushlogs();
525 check_logsize();
526 }
527 if (!miltime) { /* At midnight */
528 char s[25];
529 int j;
530
531 strncpyz(s, ctime(&now), sizeof s);
532 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
533 call_hook(HOOK_BACKUP);
534 for (j = 0; j < max_logs; j++) {
535 if (logs[j].filename != NULL && logs[j].f != NULL) {
536 fclose(logs[j].f);
537 logs[j].f = NULL;
538 }
539 }
540 }
541 }
542 if (nowtm.tm_min == notify_users_at)
543 call_hook(HOOK_HOURLY);
544 /* These no longer need checking since they are all check vs minutely
545 * settings and we only get this far on the minute.
546 */
547 if (miltime == switch_logfiles_at) {
548 call_hook(HOOK_DAILY);
549 if (!keep_all_logs) {
550 putlog(LOG_MISC, "*", _("Switching logfiles..."));
551 for (i = 0; i < max_logs; i++)
552 if (logs[i].filename) {
553 char s[1024];
554
555 if (logs[i].f) {
556 fclose(logs[i].f);
557 logs[i].f = NULL;
558 }
559 egg_snprintf(s, sizeof s, "%s.yesterday", logs[i].filename);
560 unlink(s);
561 movefile(logs[i].filename, s);
562 }
563 }
564 }
565 }
566 }
567
568 static void core_minutely()
569 {
570 check_tcl_time(&nowtm);
571 do_check_timers(&timer);
572 if (quick_logs != 0) {
573 flushlogs();
574 check_logsize();
575 }
576 }
577
578 static void core_hourly()
579 {
580 write_userfile(-1);
581 }
582
583 static void event_rehash()
584 {
585 check_tcl_event("rehash");
586 }
587
588 static void event_prerehash()
589 {
590 check_tcl_event("prerehash");
591 }
592
593 static void event_save()
594 {
595 check_tcl_event("save");
596 }
597
598 static void event_logfile()
599 {
600 check_tcl_event("logfile");
601 }
602
603 static void event_resettraffic()
604 {
605 otraffic_irc += otraffic_irc_today;
606 itraffic_irc += itraffic_irc_today;
607 otraffic_bn += otraffic_bn_today;
608 itraffic_bn += itraffic_bn_today;
609 otraffic_dcc += otraffic_dcc_today;
610 itraffic_dcc += itraffic_dcc_today;
611 otraffic_unknown += otraffic_unknown_today;
612 itraffic_unknown += itraffic_unknown_today;
613 otraffic_trans += otraffic_trans_today;
614 itraffic_trans += itraffic_trans_today;
615 otraffic_irc_today = otraffic_bn_today = 0;
616 otraffic_dcc_today = otraffic_unknown_today = 0;
617 itraffic_irc_today = itraffic_bn_today = 0;
618 itraffic_dcc_today = itraffic_unknown_today = 0;
619 itraffic_trans_today = otraffic_trans_today = 0;
620 }
621
622 static void event_loaded()
623 {
624 check_tcl_event("loaded");
625 }
626
627 void kill_tcl();
628 extern module_entry *module_list;
629 void restart_chons();
630
631 #ifdef STATIC
632 void check_static(char *, char *(*)());
633
634 #include "mod/static.h"
635 #endif
636 int init_dcc_max(), init_userent(), init_misc(), init_net(),
637 init_modules(), init_tcl(int, char **);
638 void botnet_init();
639 void init_binds();
640
641 void patch(const char *str)
642 {
643 char *p = strchr(egg_version, '+');
644
645 if (!p)
646 p = &egg_version[strlen(egg_version)];
647 sprintf(p, "+%s", str);
648 egg_numver++;
649 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
650 }
651
652 static inline void garbage_collect(void)
653 {
654 static u_8bit_t run_cnt = 0;
655
656 if (run_cnt == 3)
657 garbage_collect_tclhash();
658 else
659 run_cnt++;
660 }
661
662 int main(int argc, char **argv)
663 {
664 int xx, i;
665 char buf[520], s[25];
666 FILE *f;
667 struct sigaction sv;
668 struct chanset_t *chan;
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 init_binds();
755 init_dcc_max();
756 init_userent();
757 init_misc();
758 botnet_init();
759 init_net();
760 init_modules();
761
762 if (backgrd)
763 bg_prepare_split();
764
765 init_tcl(argc, argv);
766
767 #ifdef STATIC
768 link_statics();
769 #endif
770 strncpyz(s, ctime(&now), sizeof s);
771 strcpy(&s[11], &s[20]);
772 putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
773 chanprog();
774 if (!encrypt_pass) {
775 printf(_("You have installed modules but have not selected an encryption\n\
776 module, please consult the default config file for info.\n"));
777 bg_send_quit(BG_ABORT);
778 exit(1);
779 }
780 i = 0;
781 for (chan = chanset; chan; chan = chan->next)
782 i++;
783 putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
784 botnetnick, i, count_users(userlist));
785 cache_miss = 0;
786 cache_hit = 0;
787 egg_snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
788
789 /* Check for pre-existing eggdrop! */
790 f = fopen(pid_file, "r");
791 if (f != NULL) {
792 fgets(s, 10, f);
793 xx = atoi(s);
794 kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
795 is used */
796 if (errno != ESRCH) {
797 printf(_("I detect %s already running from this directory.\n"), origbotname);
798 printf(_("If this is incorrect, erase the %s\n"), pid_file);
799 bg_send_quit(BG_ABORT);
800 exit(1);
801 }
802 }
803
804 /* Move into background? */
805 if (backgrd) {
806 #ifndef CYGWIN_HACKS
807 bg_do_split();
808 } else { /* !backgrd */
809 #endif
810 xx = getpid();
811 if (xx != 0) {
812 FILE *fp;
813
814 /* Write pid to file */
815 unlink(pid_file);
816 fp = fopen(pid_file, "w");
817 if (fp != NULL) {
818 fprintf(fp, "%u\n", xx);
819 if (fflush(fp)) {
820 /* Let the bot live since this doesn't appear to be a botchk */
821 printf(_("* Warning! Could not write %s file!\n"), pid_file);
822 fclose(fp);
823 unlink(pid_file);
824 } else
825 fclose(fp);
826 } else
827 printf(_("* Warning! Could not write %s file!\n"), pid_file);
828 #ifdef CYGWIN_HACKS
829 printf("Launched into the background (pid: %d)\n\n", xx);
830 #endif
831 }
832 }
833
834 use_stderr = 0; /* Stop writing to stderr now */
835 if (backgrd) {
836 /* Ok, try to disassociate from controlling terminal (finger cross) */
837 #if HAVE_SETPGID && !defined(CYGWIN_HACKS)
838 setpgid(0, 0);
839 #endif
840 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
841 freopen("/dev/null", "r", stdin);
842 freopen("/dev/null", "w", stdout);
843 freopen("/dev/null", "w", stderr);
844 #ifdef CYGWIN_HACKS
845 FreeConsole();
846 #endif
847 }
848
849 /* Terminal emulating dcc chat */
850 if (!backgrd && term_z) {
851 int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
852
853 dcc[n].addr[0] = '\0';
854 dcc[n].sock = STDOUT;
855 dcc[n].timeval = now;
856 dcc[n].u.chat->con_flags = conmask;
857 dcc[n].u.chat->strip_flags = STRIP_ALL;
858 dcc[n].status = STAT_ECHO;
859 strcpy(dcc[n].nick, "HQ");
860 strcpy(dcc[n].host, "llama@console");
861 dcc[n].user = get_user_by_handle(userlist, "HQ");
862 /* Make sure there's an innocuous HQ user if needed */
863 if (!dcc[n].user) {
864 userlist = adduser(userlist, "HQ", "none", "-", USER_PARTY);
865 dcc[n].user = get_user_by_handle(userlist, "HQ");
866 }
867 setsock(STDOUT, 0); /* Entry in net table */
868 dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
869 dcc_chatter(n);
870 }
871
872 then = now;
873 online_since = now;
874 autolink_cycle(NULL); /* Hurry and connect to tandem bots */
875 add_help_reference("cmds1.help");
876 add_help_reference("cmds2.help");
877 add_help_reference("core.help");
878 add_hook(HOOK_SECONDLY, (Function) core_secondly);
879 add_hook(HOOK_MINUTELY, (Function) core_minutely);
880 add_hook(HOOK_HOURLY, (Function) core_hourly);
881 add_hook(HOOK_REHASH, (Function) event_rehash);
882 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
883 add_hook(HOOK_USERFILE, (Function) event_save);
884 add_hook(HOOK_BACKUP, (Function) backup_userfile);
885 add_hook(HOOK_DAILY, (Function) event_logfile);
886 add_hook(HOOK_DAILY, (Function) event_resettraffic);
887 add_hook(HOOK_LOADED, (Function) event_loaded);
888
889 call_hook(HOOK_LOADED);
890
891 debug0("main: entering loop");
892 while (1) {
893 int socket_cleanup = 0;
894
895 #if !defined(HAVE_PRE7_5_TCL)
896 /* Process a single tcl event */
897 Tcl_DoOneEvent(TCL_ALL_EVENTS | TCL_DONT_WAIT);
898 #endif
899
900 /* Lets move some of this here, reducing the numer of actual
901 * calls to periodic_timers
902 */
903 now = time(NULL);
904 random(); /* Woop, lets really jumble things */
905 if (now != then) { /* Once a second */
906 call_hook(HOOK_SECONDLY);
907 then = now;
908 }
909
910 /* Only do this every so often. */
911 if (!socket_cleanup) {
912 socket_cleanup = 5;
913
914 /* Remove dead dcc entries. */
915 dcc_remove_lost();
916
917 /* Check for server or dcc activity. */
918 dequeue_sockets();
919 } else
920 socket_cleanup--;
921
922 /* Free unused structures. */
923 garbage_collect();
924
925 xx = sockgets(buf, &i);
926 if (xx >= 0) { /* Non-error */
927 int idx;
928
929 for (idx = 0; idx < dcc_total; idx++)
930 if (dcc[idx].sock == xx) {
931 if (dcc[idx].type && dcc[idx].type->activity) {
932 /* Traffic stats */
933 if (dcc[idx].type->name) {
934 if (!strncmp(dcc[idx].type->name, "BOT", 3))
935 itraffic_bn_today += strlen(buf) + 1;
936 else if (!strcmp(dcc[idx].type->name, "SERVER"))
937 itraffic_irc_today += strlen(buf) + 1;
938 else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
939 itraffic_dcc_today += strlen(buf) + 1;
940 else if (!strncmp(dcc[idx].type->name, "FILES", 5))
941 itraffic_dcc_today += strlen(buf) + 1;
942 else if (!strcmp(dcc[idx].type->name, "SEND"))
943 itraffic_trans_today += strlen(buf) + 1;
944 else if (!strncmp(dcc[idx].type->name, "GET", 3))
945 itraffic_trans_today += strlen(buf) + 1;
946 else
947 itraffic_unknown_today += strlen(buf) + 1;
948 }
949 dcc[idx].type->activity(idx, buf, i);
950 } else
951 putlog(LOG_MISC, "*",
952 "!!! untrapped dcc activity: type %s, sock %d",
953 dcc[idx].type->name, dcc[idx].sock);
954 break;
955 }
956 } else if (xx == -1) { /* EOF from someone */
957 int idx;
958
959 if (i == STDOUT && !backgrd)
960 fatal("END OF FILE ON TERMINAL", 0);
961 for (idx = 0; idx < dcc_total; idx++)
962 if (dcc[idx].sock == i) {
963 if (dcc[idx].type && dcc[idx].type->eof)
964 dcc[idx].type->eof(idx);
965 else {
966 putlog(LOG_MISC, "*",
967 "*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
968 i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
969 killsock(i);
970 lostdcc(idx);
971 }
972 idx = dcc_total + 1;
973 }
974 if (idx == dcc_total) {
975 putlog(LOG_MISC, "*",
976 "(@) EOF socket %d, not a dcc socket, not anything.", i);
977 close(i);
978 killsock(i);
979 }
980 } else if (xx == -2 && errno != EINTR) { /* select() error */
981 putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
982 for (i = 0; i < dcc_total; i++) {
983 if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno = EBADF)) {
984 putlog(LOG_MISC, "*",
985 "DCC socket %d (type %d, name '%s') expired -- pfft",
986 dcc[i].sock, dcc[i].type, dcc[i].nick);
987 killsock(dcc[i].sock);
988 lostdcc(i);
989 i--;
990 }
991 }
992 } else if (xx == -3) {
993 call_hook(HOOK_IDLE);
994 socket_cleanup = 0; /* If we've been idle, cleanup & flush */
995 }
996
997 if (do_restart) {
998 if (do_restart == -2)
999 rehash();
1000 else {
1001 /* Unload as many modules as possible */
1002 int f = 1;
1003 module_entry *p;
1004 Function x;
1005 char xx[256];
1006
1007 /* oops, I guess we should call this event before tcl is restarted */
1008 check_tcl_event("prerestart");
1009
1010 while (f) {
1011 f = 0;
1012 for (p = module_list; p != NULL; p = p->next) {
1013 dependancy *d = dependancy_list;
1014 int ok = 1;
1015
1016 while (ok && d) {
1017 if (d->needed == p)
1018 ok = 0;
1019 d = d->next;
1020 }
1021 if (ok) {
1022 strcpy(xx, p->name);
1023 if (module_unload(xx, origbotname) == NULL) {
1024 f = 1;
1025 break;
1026 }
1027 }
1028 }
1029 }
1030 p = module_list;
1031 if (p && p->next && p->next->next)
1032 /* Should be only 2 modules now - blowfish (or some other
1033 encryption module) and eggdrop. */
1034 putlog(LOG_MISC, "*", _("Stagnant module; there WILL be memory leaks!"));
1035 flushlogs();
1036 kill_tcl();
1037 init_tcl(argc, argv);
1038 /* We expect the encryption module as the current module pointed
1039 * to by `module_list'.
1040 */
1041 x = p->funcs[MODCALL_START];
1042 /* `NULL' indicates that we just recently restarted. The module
1043 * is expected to re-initialise as needed.
1044 */
1045 x(NULL);
1046 rehash();
1047 restart_chons();
1048 call_hook(HOOK_LOADED);
1049 }
1050 do_restart = 0;
1051 }
1052 }
1053 }

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