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

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Revision 1.94 - (show annotations) (download) (as text)
Sun Oct 21 06:02:48 2001 UTC (17 years, 9 months ago) by stdarg
Branch: MAIN
Changes since 1.93: +4 -3 lines
File MIME type: text/x-chdr
* Changed the FILT bind to use a global variable instead of returning a string.
This will make it easier for multiple callbacks to act on one string.
* Made a new config variable called "dcc_command_chars" that lets you change
which chars represent a command on the console. Default is "./".

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 1.93 2001/10/20 08:04:22 guppy Exp $
9 */
10 /*
11 * Copyright (C) 1997 Robey Pointer
12 * Copyright (C) 1999, 2000, 2001 Eggheads Development Team
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 */
28 /*
29 * The author (Robey Pointer) can be reached at: robey@netcom.com
30 * NOTE: Robey is no long working on this code, there is a discussion
31 * list available at eggheads@eggheads.org.
32 */
33
34 #include "main.h"
35 #include <fcntl.h>
36 #include <time.h>
37 #include <errno.h>
38 #include <signal.h>
39 #include <netdb.h>
40 #include <setjmp.h>
41
42 #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 Tcl_Interp *interp;
77 extern tcl_timer_t *timer,
78 *utimer;
79 extern jmp_buf alarmret;
80
81
82 /*
83 * Please use the PATCH macro instead of directly altering the version
84 * string from now on (it makes it much easier to maintain patches).
85 * Also please read the README file regarding your rights to distribute
86 * modified versions of this bot.
87 */
88
89 char egg_version[1024] = VERSION;
90 int egg_numver = VERSION_NUM;
91
92 char notify_new[121] = ""; /* Person to send a note to for new users */
93 int default_flags = 0; /* Default user flags and */
94 int default_uflags = 0; /* Default userdefinied flags for people
95 who say 'hello' or for .adduser */
96
97 int backgrd = 1; /* Run in the background? */
98 int con_chan = 0; /* Foreground: constantly display channel
99 stats? */
100 int term_z = 0; /* Foreground: use the terminal as a party
101 line? */
102 char configfile[121] = "eggdrop.conf"; /* Name of the config file */
103 char helpdir[121]; /* Directory of help files (if used) */
104 char textdir[121] = ""; /* Directory for text files that get dumped */
105 time_t online_since; /* Unix-time that the bot loaded up */
106 int make_userfile = 0; /* Using bot in make-userfile mode? (first
107 user to 'hello' becomes master) */
108 char owner[121] = ""; /* Permanent owner(s) of the bot */
109 char pid_file[120]; /* Name of the file for the pid to be
110 stored in */
111 int save_users_at = 0; /* How many minutes past the hour to
112 save the userfile? */
113 int notify_users_at = 0; /* How many minutes past the hour to
114 notify users of notes? */
115 char version[81]; /* Version info (long form) */
116 char ver[41]; /* Version info (short form) */
117 char egg_xtra[2048]; /* Patch info */
118 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
119 int do_restart = 0; /* .restart has been called, restart asap */
120 int die_on_sighup = 0; /* die if bot receives SIGHUP */
121 int die_on_sigterm = 1; /* die if bot receives SIGTERM */
122 int resolve_timeout = 15; /* hostname/address lookup timeout */
123 char quit_msg[1024]; /* quit message */
124 time_t now; /* duh, now :) */
125
126 /* Traffic stats
127 */
128 unsigned long otraffic_irc = 0;
129 unsigned long otraffic_irc_today = 0;
130 unsigned long otraffic_bn = 0;
131 unsigned long otraffic_bn_today = 0;
132 unsigned long otraffic_dcc = 0;
133 unsigned long otraffic_dcc_today = 0;
134 unsigned long otraffic_filesys = 0;
135 unsigned long otraffic_filesys_today = 0;
136 unsigned long otraffic_trans = 0;
137 unsigned long otraffic_trans_today = 0;
138 unsigned long otraffic_unknown = 0;
139 unsigned long otraffic_unknown_today = 0;
140 unsigned long itraffic_irc = 0;
141 unsigned long itraffic_irc_today = 0;
142 unsigned long itraffic_bn = 0;
143 unsigned long itraffic_bn_today = 0;
144 unsigned long itraffic_dcc = 0;
145 unsigned long itraffic_dcc_today = 0;
146 unsigned long itraffic_trans = 0;
147 unsigned long itraffic_trans_today = 0;
148 unsigned long itraffic_unknown = 0;
149 unsigned long itraffic_unknown_today = 0;
150
151 #ifdef DEBUG_CONTEXT
152 /* Context storage for fatal crashes */
153 char cx_file[16][30];
154 char cx_note[16][256];
155 int cx_line[16];
156 int cx_ptr = 0;
157 #endif
158
159
160 void fatal(const char *s, int recoverable)
161 {
162 int i;
163
164 putlog(LOG_MISC, "*", "* %s", s);
165 flushlogs();
166 for (i = 0; i < dcc_total; i++)
167 if (dcc[i].sock >= 0)
168 killsock(dcc[i].sock);
169 unlink(pid_file);
170 if (!recoverable) {
171 bg_send_quit(BG_ABORT);
172 exit(1);
173 }
174 }
175
176 static void check_expired_dcc()
177 {
178 int i;
179
180 for (i = 0; i < dcc_total; i++)
181 if (dcc[i].type && dcc[i].type->timeout_val &&
182 ((now - dcc[i].timeval) > *(dcc[i].type->timeout_val))) {
183 if (dcc[i].type->timeout)
184 dcc[i].type->timeout(i);
185 else if (dcc[i].type->eof)
186 dcc[i].type->eof(i);
187 else
188 continue;
189 /* Only timeout 1 socket per cycle, too risky for more */
190 return;
191 }
192 }
193
194 #ifdef DEBUG_CONTEXT
195 static int nested_debug = 0;
196
197 void write_debug()
198 {
199 int x;
200 char s[25];
201 int y;
202
203 if (nested_debug) {
204 /* Yoicks, if we have this there's serious trouble!
205 * All of these are pretty reliable, so we'll try these.
206 *
207 * NOTE: dont try and display context-notes in here, it's
208 * _not_ safe <cybah>
209 */
210 x = creat("DEBUG.DEBUG", 0644);
211 setsock(x, SOCK_NONSOCK);
212 if (x >= 0) {
213 strncpyz(s, ctime(&now), sizeof s);
214 dprintf(-x, "Debug (%s) written %s\n", ver, s);
215 dprintf(-x, "Please report problem to bugs@eggheads.org\n");
216 dprintf(-x, "after a visit to http://www.eggheads.org/bugzilla/\n");
217 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
218 dprintf(-x, "Context: ");
219 cx_ptr = cx_ptr & 15;
220 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
221 dprintf(-x, "%s/%d,\n ", cx_file[y], cx_line[y]);
222 dprintf(-x, "%s/%d\n\n", cx_file[y], cx_line[y]);
223 killsock(x);
224 close(x);
225 }
226 bg_send_quit(BG_ABORT);
227 exit(1); /* Dont even try & tell people about, that may
228 have caused the fault last time. */
229 } else
230 nested_debug = 1;
231 putlog(LOG_MISC, "*", "* Last context: %s/%d [%s]", cx_file[cx_ptr],
232 cx_line[cx_ptr], cx_note[cx_ptr][0] ? cx_note[cx_ptr] : "");
233 putlog(LOG_MISC, "*", "* Please REPORT this BUG!");
234 putlog(LOG_MISC, "*", "* Check doc/BUG-REPORT on how to do so.");
235 x = creat("DEBUG", 0644);
236 setsock(x, SOCK_NONSOCK);
237 if (x < 0) {
238 putlog(LOG_MISC, "*", "* Failed to write DEBUG");
239 } else {
240 strncpyz(s, ctime(&now), sizeof s);
241 dprintf(-x, "Debug (%s) written %s\n", ver, s);
242 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
243 #ifdef STATIC
244 dprintf(-x, "STATICALLY LINKED\n");
245 #endif
246
247 /* info library */
248 dprintf(-x, "TCL library: %s\n",
249 ((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
250 interp->result : "*unknown*");
251
252 /* info tclversion/patchlevel */
253 dprintf(-x, "TCL version: %s (header version %s)\n",
254 ((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
255 interp->result : (Tcl_Eval(interp, "info tclversion") == TCL_OK) ?
256 interp->result : "*unknown*", TCL_PATCH_LEVEL ? TCL_PATCH_LEVEL :
257 "*unknown*");
258
259 #if HAVE_TCL_THREADS
260 dprintf(-x, "TCL is threaded\n");
261 #endif
262
263 #ifdef CCFLAGS
264 dprintf(-x, "Compile flags: %s\n", CCFLAGS);
265 #endif
266 #ifdef LDFLAGS
267 dprintf(-x, "Link flags: %s\n", LDFLAGS);
268 #endif
269 #ifdef STRIPFLAGS
270 dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
271 #endif
272
273 dprintf(-x, "Context: ");
274 cx_ptr = cx_ptr & 15;
275 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
276 dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
277 (cx_note[y][0]) ? cx_note[y] : "");
278 dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
279 (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
280 tell_dcc(-x);
281 dprintf(-x, "\n");
282 tell_netdebug(-x);
283 killsock(x);
284 close(x);
285 putlog(LOG_MISC, "*", "* Wrote DEBUG");
286 }
287 }
288 #endif
289
290 static void got_bus(int z)
291 {
292 #ifdef DEBUG_CONTEXT
293 write_debug();
294 #endif
295 fatal("BUS ERROR -- CRASHING!", 1);
296 #ifdef SA_RESETHAND
297 kill(getpid(), SIGBUS);
298 #else
299 bg_send_quit(BG_ABORT);
300 exit(1);
301 #endif
302 }
303
304 static void got_segv(int z)
305 {
306 #ifdef DEBUG_CONTEXT
307 write_debug();
308 #endif
309 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
310 #ifdef SA_RESETHAND
311 kill(getpid(), SIGSEGV);
312 #else
313 bg_send_quit(BG_ABORT);
314 exit(1);
315 #endif
316 }
317
318 static void got_fpe(int z)
319 {
320 #ifdef DEBUG_CONTEXT
321 write_debug();
322 #endif
323 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
324 }
325
326 static void got_term(int z)
327 {
328 write_userfile(-1);
329 check_bind_event("sigterm");
330 if (die_on_sigterm) {
331 fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
332 } else {
333 putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
334 }
335 }
336
337 static void got_quit(int z)
338 {
339 check_bind_event("sigquit");
340 putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
341 return;
342 }
343
344 static void got_hup(int z)
345 {
346 write_userfile(-1);
347 check_bind_event("sighup");
348 if (die_on_sighup) {
349 fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
350 } else
351 putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
352 do_restart = -2;
353 return;
354 }
355
356 /* A call to resolver (gethostbyname, etc) timed out
357 */
358 static void got_alarm(int z)
359 {
360 longjmp(alarmret, 1);
361
362 /* -Never reached- */
363 }
364
365 /* Got ILL signal -- log context and continue
366 */
367 static void got_ill(int z)
368 {
369 check_bind_event("sigill");
370 #ifdef DEBUG_CONTEXT
371 putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
372 cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
373 #endif
374 }
375
376 #ifdef DEBUG_CONTEXT
377 /* Context */
378 void eggContext(const char *file, int line, const char *module)
379 {
380 char x[31], *p;
381
382 p = strrchr(file, '/');
383 if (!module) {
384 strncpyz(x, p ? p + 1 : file, sizeof x);
385 } else
386 snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
387 cx_ptr = ((cx_ptr + 1) & 15);
388 strcpy(cx_file[cx_ptr], x);
389 cx_line[cx_ptr] = line;
390 cx_note[cx_ptr][0] = 0;
391 }
392
393 /* Called from the ContextNote macro.
394 */
395 void eggContextNote(const char *file, int line, const char *module,
396 const char *note)
397 {
398 char x[31], *p;
399
400 p = strrchr(file, '/');
401 if (!module) {
402 strncpyz(x, p ? p + 1 : file, sizeof x);
403 } else
404 snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
405 cx_ptr = ((cx_ptr + 1) & 15);
406 strcpy(cx_file[cx_ptr], x);
407 cx_line[cx_ptr] = line;
408 strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
409 }
410 #endif
411
412 static void do_arg(char *s)
413 {
414 char x[1024], *z = x;
415 int i;
416
417 if (s[0] == '-')
418 for (i = 1; i < strlen(s); i++) {
419 switch (s[i]) {
420 case 'n':
421 backgrd = 0;
422 break;
423 case 'c':
424 con_chan = 1;
425 term_z = 0;
426 break;
427 case 't':
428 con_chan = 0;
429 term_z = 1;
430 break;
431 case 'm':
432 make_userfile = 1;
433 break;
434 case 'v':
435 strncpyz(x, egg_version, sizeof x);
436 newsplit(&z);
437 newsplit(&z);
438 printf("%s\n", version);
439 if (z[0])
440 printf(" (patches: %s)\n", z);
441 bg_send_quit(BG_ABORT);
442 exit(0);
443 break; /* this should never be reached */
444 case 'h':
445 printf("\n%s\n\n", version);
446 printf(_("Command line arguments:\n\
447 -h help\n\
448 -v print version and exit\n\
449 -n don't go into the background\n\
450 -c (with -n) display channel stats every 10 seconds\n\
451 -t (with -n) use terminal to simulate dcc-chat\n\
452 -m userfile creation mode\n\
453 optional config filename (default 'eggdrop.conf')\n"));
454 printf("\n");
455 bg_send_quit(BG_ABORT);
456 exit(0);
457 break; /* this should never be reached */
458 }
459 } else
460 strncpyz(configfile, s, sizeof configfile);
461 }
462
463 void backup_userfile(void)
464 {
465 char s[125];
466
467 putlog(LOG_MISC, "*", _("Backing up user file..."));
468 snprintf(s, sizeof s, "%s~bak", userfile);
469 copyfile(userfile, s);
470 }
471
472 /* Timer info */
473 static int lastmin = 99;
474 static time_t then;
475 static struct tm nowtm;
476
477 /* Called once a second.
478 *
479 * Note: Try to not put any Context lines in here (guppy 21Mar2000).
480 */
481 static void core_secondly()
482 {
483 static int cnt = 0;
484 int miltime;
485
486 call_hook(HOOK_SECONDLY); /* Will be removed later */
487 cnt++;
488 if (cnt >= 10) { /* Every 10 seconds */
489 cnt = 0;
490 check_expired_dcc();
491 if (con_chan && !backgrd) {
492 dprintf(DP_STDOUT, "\033[2J\033[1;1H");
493 tell_verbose_status(DP_STDOUT);
494 do_module_report(DP_STDOUT, 0, "server");
495 do_module_report(DP_STDOUT, 0, "channels");
496 }
497 }
498 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
499 if (nowtm.tm_min != lastmin) {
500 int i = 0;
501
502 /* Once a minute */
503 lastmin = (lastmin + 1) % 60;
504 call_hook(HOOK_MINUTELY);
505 check_expired_ignores();
506 autolink_cycle(NULL); /* Attempt autolinks */
507 /* In case for some reason more than 1 min has passed: */
508 while (nowtm.tm_min != lastmin) {
509 /* Timer drift, dammit */
510 debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
511 i++;
512 lastmin = (lastmin + 1) % 60;
513 call_hook(HOOK_MINUTELY);
514 }
515 if (i > 1)
516 putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
517 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
518 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
519 call_hook(HOOK_5MINUTELY);
520 if (!miltime) { /* At midnight */
521 char s[25];
522 int j;
523
524 strncpyz(s, ctime(&now), sizeof s);
525 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
526 call_hook(HOOK_BACKUP);
527 call_hook(HOOK_DAILY);
528 }
529 }
530 if (nowtm.tm_min == notify_users_at)
531 call_hook(HOOK_HOURLY);
532 }
533 }
534
535 static void core_minutely()
536 {
537 check_bind_time(&nowtm);
538 }
539
540 static void core_hourly()
541 {
542 write_userfile(-1);
543 }
544
545 static void event_rehash()
546 {
547 check_bind_event("rehash");
548 }
549
550 static void event_prerehash()
551 {
552 check_bind_event("prerehash");
553 }
554
555 static void event_save()
556 {
557 check_bind_event("save");
558 }
559
560 static void event_logfile()
561 {
562 check_bind_event("logfile");
563 }
564
565 static void event_resettraffic()
566 {
567 otraffic_irc += otraffic_irc_today;
568 itraffic_irc += itraffic_irc_today;
569 otraffic_bn += otraffic_bn_today;
570 itraffic_bn += itraffic_bn_today;
571 otraffic_dcc += otraffic_dcc_today;
572 itraffic_dcc += itraffic_dcc_today;
573 otraffic_unknown += otraffic_unknown_today;
574 itraffic_unknown += itraffic_unknown_today;
575 otraffic_trans += otraffic_trans_today;
576 itraffic_trans += itraffic_trans_today;
577 otraffic_irc_today = otraffic_bn_today = 0;
578 otraffic_dcc_today = otraffic_unknown_today = 0;
579 itraffic_irc_today = itraffic_bn_today = 0;
580 itraffic_dcc_today = itraffic_unknown_today = 0;
581 itraffic_trans_today = otraffic_trans_today = 0;
582 }
583
584 static void event_loaded()
585 {
586 check_bind_event("loaded");
587 }
588
589 void kill_tcl();
590 extern module_entry *module_list;
591 void restart_chons();
592
593 int init_userent(), init_misc(), init_net(),
594 init_modules(), init_tcl(int, char **);
595 void timer_init();
596 void logfile_init();
597 void botnet_init();
598 void dns_init();
599 void script_init();
600 void binds_init();
601 void dcc_init();
602
603 void patch(const char *str)
604 {
605 char *p = strchr(egg_version, '+');
606
607 if (!p)
608 p = &egg_version[strlen(egg_version)];
609 sprintf(p, "+%s", str);
610 egg_numver++;
611 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
612 }
613
614 static inline void garbage_collect(void)
615 {
616 static u_8bit_t run_cnt = 0;
617
618 if (run_cnt == 3)
619 garbage_collect_tclhash();
620 else
621 run_cnt++;
622 }
623
624 int main(int argc, char **argv)
625 {
626 int xx, i;
627 char buf[520], s[25];
628 FILE *f;
629 struct sigaction sv;
630 struct chanset_t *chan;
631 egg_timeval_t howlong;
632
633 #ifdef DEBUG
634 /* Make sure it can write core, if you make debug. Else it's pretty
635 * useless (dw)
636 */
637 {
638 #include <sys/resource.h>
639 struct rlimit cdlim;
640
641 cdlim.rlim_cur = RLIM_INFINITY;
642 cdlim.rlim_max = RLIM_INFINITY;
643 setrlimit(RLIMIT_CORE, &cdlim);
644 }
645 #endif
646
647 /* Initialise context list */
648 for (i = 0; i < 16; i++)
649 Context;
650
651 setlocale(LC_MESSAGES, "");
652 bindtextdomain(PACKAGE, LOCALEDIR);
653 textdomain(PACKAGE);
654
655 #include "patch.h"
656 /* Version info! */
657 snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
658 snprintf(version, sizeof version, "Eggdrop v%s (C)1997 Robey Pointer (C)2001 Eggheads",
659 egg_version);
660 /* Now add on the patchlevel (for Tcl) */
661 sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
662 strcat(egg_version, egg_xtra);
663 #ifdef STOP_UAC
664 {
665 int nvpair[2];
666
667 nvpair[0] = SSIN_UACPROC;
668 nvpair[1] = UAC_NOPRINT;
669 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
670 }
671 #endif
672
673 /* Set up error traps: */
674 sv.sa_handler = got_bus;
675 sigemptyset(&sv.sa_mask);
676 #ifdef SA_RESETHAND
677 sv.sa_flags = SA_RESETHAND;
678 #else
679 sv.sa_flags = 0;
680 #endif
681 sigaction(SIGBUS, &sv, NULL);
682 sv.sa_handler = got_segv;
683 sigaction(SIGSEGV, &sv, NULL);
684 #ifdef SA_RESETHAND
685 sv.sa_flags = 0;
686 #endif
687 sv.sa_handler = got_fpe;
688 sigaction(SIGFPE, &sv, NULL);
689 sv.sa_handler = got_term;
690 sigaction(SIGTERM, &sv, NULL);
691 sv.sa_handler = got_hup;
692 sigaction(SIGHUP, &sv, NULL);
693 sv.sa_handler = got_quit;
694 sigaction(SIGQUIT, &sv, NULL);
695 sv.sa_handler = SIG_IGN;
696 sigaction(SIGPIPE, &sv, NULL);
697 sv.sa_handler = got_ill;
698 sigaction(SIGILL, &sv, NULL);
699 sv.sa_handler = got_alarm;
700 sigaction(SIGALRM, &sv, NULL);
701
702 /* Initialize variables and stuff */
703 now = time(NULL);
704 chanset = NULL;
705 memcpy(&nowtm, localtime(&now), sizeof(struct tm));
706 lastmin = nowtm.tm_min;
707 srandom(now % (getpid() + getppid()));
708 if (argc > 1)
709 for (i = 1; i < argc; i++)
710 do_arg(argv[i]);
711 printf("\n%s\n", version);
712 printf(" *** WARNING: Do NOT run this DEVELOPMENT version for any purpose other than testing.\n\n");
713
714 /* Don't allow eggdrop to run as root */
715 if (((int) getuid() == 0) || ((int) geteuid() == 0))
716 fatal(_("ERROR: Eggdrop will not run as root!"), 0);
717
718 script_init();
719 logfile_init();
720 timer_init();
721 dns_init();
722 binds_init();
723 core_binds_init();
724 dcc_init();
725 init_userent();
726 init_misc();
727 botnet_init();
728 init_net();
729 init_modules();
730
731 if (backgrd)
732 bg_prepare_split();
733
734 init_tcl(argc, argv);
735
736 strncpyz(s, ctime(&now), sizeof s);
737 strcpy(&s[11], &s[20]);
738 putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
739 chanprog();
740 if (!encrypt_pass) {
741 printf(_("You have installed modules but have not selected an encryption\n\
742 module, please consult the default config file for info.\n"));
743 bg_send_quit(BG_ABORT);
744 exit(1);
745 }
746 i = 0;
747 for (chan = chanset; chan; chan = chan->next)
748 i++;
749 putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
750 botnetnick, i, count_users(userlist));
751 cache_miss = 0;
752 cache_hit = 0;
753
754 if (!pid_file[0])
755 snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
756
757 /* Check for pre-existing eggdrop! */
758 f = fopen(pid_file, "r");
759 if (f != NULL) {
760 fgets(s, 10, f);
761 xx = atoi(s);
762 kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
763 is used */
764 if (errno != ESRCH) {
765 printf(_("I detect %s already running from this directory.\n"), origbotname);
766 printf(_("If this is incorrect, erase the %s\n"), pid_file);
767 bg_send_quit(BG_ABORT);
768 exit(1);
769 }
770 }
771
772 /* Move into background? */
773 if (backgrd) {
774 #ifndef CYGWIN_HACKS
775 bg_do_split();
776 } else { /* !backgrd */
777 #endif
778 xx = getpid();
779 if (xx != 0) {
780 FILE *fp;
781
782 /* Write pid to file */
783 unlink(pid_file);
784 fp = fopen(pid_file, "w");
785 if (fp != NULL) {
786 fprintf(fp, "%u\n", xx);
787 if (fflush(fp)) {
788 /* Let the bot live since this doesn't appear to be a botchk */
789 printf(_("* Warning! Could not write %s file!\n"), pid_file);
790 fclose(fp);
791 unlink(pid_file);
792 } else
793 fclose(fp);
794 } else
795 printf(_("* Warning! Could not write %s file!\n"), pid_file);
796 #ifdef CYGWIN_HACKS
797 printf("Launched into the background (pid: %d)\n\n", xx);
798 #endif
799 }
800 }
801
802 use_stderr = 0; /* Stop writing to stderr now */
803 if (backgrd) {
804 /* Ok, try to disassociate from controlling terminal (finger cross) */
805 #if HAVE_SETPGID && !defined(CYGWIN_HACKS)
806 setpgid(0, 0);
807 #endif
808 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
809 freopen("/dev/null", "r", stdin);
810 freopen("/dev/null", "w", stdout);
811 freopen("/dev/null", "w", stderr);
812 #ifdef CYGWIN_HACKS
813 FreeConsole();
814 #endif
815 }
816
817 /* Terminal emulating dcc chat */
818 if (!backgrd && term_z) {
819 int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
820
821 dcc[n].addr[0] = '\0';
822 dcc[n].sock = STDOUT;
823 dcc[n].timeval = now;
824 dcc[n].u.chat->con_flags = conmask;
825 dcc[n].u.chat->strip_flags = STRIP_ALL;
826 dcc[n].status = STAT_ECHO;
827 strcpy(dcc[n].nick, "HQ");
828 strcpy(dcc[n].host, "llama@console");
829 dcc[n].user = get_user_by_handle(userlist, "HQ");
830 /* Make sure there's an innocuous HQ user if needed */
831 if (!dcc[n].user) {
832 userlist = adduser(userlist, "HQ", "none", "-", USER_PARTY);
833 dcc[n].user = get_user_by_handle(userlist, "HQ");
834 }
835 setsock(STDOUT, 0); /* Entry in net table */
836 dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
837 dcc_chatter(n);
838 }
839
840 then = now;
841 online_since = now;
842 autolink_cycle(NULL); /* Hurry and connect to tandem bots */
843 add_help_reference("cmds1.help");
844 add_help_reference("cmds2.help");
845 add_help_reference("core.help");
846 howlong.sec = 1;
847 howlong.usec = 0;
848 timer_create_repeater(&howlong, (Function) core_secondly);
849 add_hook(HOOK_MINUTELY, (Function) core_minutely);
850 add_hook(HOOK_HOURLY, (Function) core_hourly);
851 add_hook(HOOK_REHASH, (Function) event_rehash);
852 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
853 add_hook(HOOK_USERFILE, (Function) event_save);
854 add_hook(HOOK_BACKUP, (Function) backup_userfile);
855 add_hook(HOOK_DAILY, (Function) event_logfile);
856 add_hook(HOOK_DAILY, (Function) event_resettraffic);
857 add_hook(HOOK_LOADED, (Function) event_loaded);
858
859 call_hook(HOOK_LOADED);
860
861 debug0("main: entering loop");
862 while (1) {
863 int socket_cleanup = 0;
864
865 #if !defined(HAVE_PRE7_5_TCL)
866 /* Process a single tcl event */
867 Tcl_DoOneEvent(TCL_ALL_EVENTS | TCL_DONT_WAIT);
868 #endif
869
870 /* Lets move some of this here, reducing the numer of actual
871 * calls to periodic_timers
872 */
873 now = time(NULL);
874 random(); /* Woop, lets really jumble things */
875 timer_run();
876 if (now != then) { /* Once a second */
877 /* call_hook(HOOK_SECONDLY); */
878 then = now;
879 }
880
881 /* Only do this every so often. */
882 if (!socket_cleanup) {
883 socket_cleanup = 5;
884
885 /* Remove dead dcc entries. */
886 dcc_remove_lost();
887
888 /* Check for server or dcc activity. */
889 dequeue_sockets();
890 } else
891 socket_cleanup--;
892
893 /* Free unused structures. */
894 garbage_collect();
895
896 xx = sockgets(buf, &i);
897 if (xx >= 0) { /* Non-error */
898 int idx;
899
900 for (idx = 0; idx < dcc_total; idx++)
901 if (dcc[idx].sock == xx) {
902 if (dcc[idx].type && dcc[idx].type->activity) {
903 /* Traffic stats */
904 if (dcc[idx].type->name) {
905 if (!strncmp(dcc[idx].type->name, "BOT", 3))
906 itraffic_bn_today += strlen(buf) + 1;
907 else if (!strcmp(dcc[idx].type->name, "SERVER"))
908 itraffic_irc_today += strlen(buf) + 1;
909 else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
910 itraffic_dcc_today += strlen(buf) + 1;
911 else if (!strncmp(dcc[idx].type->name, "FILES", 5))
912 itraffic_dcc_today += strlen(buf) + 1;
913 else if (!strcmp(dcc[idx].type->name, "SEND"))
914 itraffic_trans_today += strlen(buf) + 1;
915 else if (!strncmp(dcc[idx].type->name, "GET", 3))
916 itraffic_trans_today += strlen(buf) + 1;
917 else
918 itraffic_unknown_today += strlen(buf) + 1;
919 }
920 dcc[idx].type->activity(idx, buf, i);
921 } else
922 putlog(LOG_MISC, "*",
923 "!!! untrapped dcc activity: type %s, sock %d",
924 dcc[idx].type->name, dcc[idx].sock);
925 break;
926 }
927 } else if (xx == -1) { /* EOF from someone */
928 int idx;
929
930 if (i == STDOUT && !backgrd)
931 fatal("END OF FILE ON TERMINAL", 0);
932 for (idx = 0; idx < dcc_total; idx++)
933 if (dcc[idx].sock == i) {
934 if (dcc[idx].type && dcc[idx].type->eof)
935 dcc[idx].type->eof(idx);
936 else {
937 putlog(LOG_MISC, "*",
938 "*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
939 i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
940 killsock(i);
941 lostdcc(idx);
942 }
943 idx = dcc_total + 1;
944 }
945 if (idx == dcc_total) {
946 putlog(LOG_MISC, "*",
947 "(@) EOF socket %d, not a dcc socket, not anything.", i);
948 close(i);
949 killsock(i);
950 }
951 } else if (xx == -2 && errno != EINTR) { /* select() error */
952 putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
953 for (i = 0; i < dcc_total; i++) {
954 if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno = EBADF)) {
955 putlog(LOG_MISC, "*",
956 "DCC socket %d (type %d, name '%s') expired -- pfft",
957 dcc[i].sock, dcc[i].type, dcc[i].nick);
958 killsock(dcc[i].sock);
959 lostdcc(i);
960 i--;
961 }
962 }
963 } else if (xx == -3) {
964 call_hook(HOOK_IDLE);
965 socket_cleanup = 0; /* If we've been idle, cleanup & flush */
966 }
967
968 if (do_restart) {
969 if (do_restart == -2)
970 rehash();
971 else {
972 /* Unload as many modules as possible */
973 int f = 1;
974 module_entry *p;
975 Function x;
976 char xx[256];
977
978 /* oops, I guess we should call this event before tcl is restarted */
979 check_bind_event("prerestart");
980
981 while (f) {
982 f = 0;
983 for (p = module_list; p != NULL; p = p->next) {
984 dependancy *d = dependancy_list;
985 int ok = 1;
986
987 while (ok && d) {
988 if (d->needed == p)
989 ok = 0;
990 d = d->next;
991 }
992 if (ok) {
993 strcpy(xx, p->name);
994 if (module_unload(xx, origbotname) == NULL) {
995 f = 1;
996 break;
997 }
998 }
999 }
1000 }
1001 p = module_list;
1002 if (p && p->next && p->next->next)
1003 /* Should be only 2 modules now - blowfish (or some other
1004 encryption module) and eggdrop. */
1005 putlog(LOG_MISC, "*", _("Stagnant module; there WILL be memory leaks!"));
1006 flushlogs();
1007 kill_tcl();
1008 timer_destroy_all(); /* Destroy all timers. */
1009 init_tcl(argc, argv);
1010 /* We expect the encryption module as the current module pointed
1011 * to by `module_list'.
1012 */
1013 x = p->funcs[MODCALL_START];
1014 /* `NULL' indicates that we just recently restarted. The module
1015 * is expected to re-initialise as needed.
1016 */
1017 x(NULL);
1018 rehash();
1019 restart_chons();
1020 call_hook(HOOK_LOADED);
1021 }
1022 do_restart = 0;
1023 }
1024 }
1025 }

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