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

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Revision 1.73 - (show annotations) (download) (as text)
Fri Aug 10 23:51:20 2001 UTC (18 years ago) by ite
Branch: MAIN
Changes since 1.72: +18 -10 lines
File MIME type: text/x-chdr
Gettext phase 1: created a dummy _() macro, replaced old get_lang #defines with the respective string entries in english.*.lang and removed them.

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 1.72 2001/07/31 16:40:40 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 #ifdef STOP_UAC /* osf/1 complains a lot */
43 #include <sys/sysinfo.h>
44 #define UAC_NOPRINT 0x00000001 /* Don't report unaligned fixups */
45 #endif
46 /* Some systems have a working sys/wait.h even though configure will
47 * decide it's not bsd compatable. Oh well.
48 */
49
50 #include "chan.h"
51 #include "modules.h"
52 #include "tandem.h"
53 #include "bg.h"
54
55 #include "adns/adns.h"
56
57 #ifdef CYGWIN_HACKS
58 #include <windows.h>
59 #endif
60
61 #ifndef _POSIX_SOURCE
62 /* Solaris needs this */
63 #define _POSIX_SOURCE 1
64 #endif
65
66 extern char origbotname[], userfile[], botnetnick[];
67 extern int dcc_total, conmask, cache_hit, cache_miss,
68 max_logs, quick_logs;
69 extern struct dcc_t *dcc;
70 extern struct userrec *userlist;
71 extern struct chanset_t *chanset;
72 extern log_t *logs;
73 extern Tcl_Interp *interp;
74 extern tcl_timer_t *timer,
75 *utimer;
76 extern jmp_buf alarmret;
77
78
79 /*
80 * Please use the PATCH macro instead of directly altering the version
81 * string from now on (it makes it much easier to maintain patches).
82 * Also please read the README file regarding your rights to distribute
83 * modified versions of this bot.
84 */
85
86 char egg_version[1024] = "1.7.0";
87 int egg_numver = 1070000;
88
89 char notify_new[121] = ""; /* Person to send a note to for new users */
90 int default_flags = 0; /* Default user flags and */
91 int default_uflags = 0; /* Default userdefinied flags for people
92 who say 'hello' or for .adduser */
93
94 int backgrd = 1; /* Run in the background? */
95 int con_chan = 0; /* Foreground: constantly display channel
96 stats? */
97 int term_z = 0; /* Foreground: use the terminal as a party
98 line? */
99 char configfile[121] = "eggdrop.conf"; /* Name of the config file */
100 char helpdir[121]; /* Directory of help files (if used) */
101 char textdir[121] = ""; /* Directory for text files that get dumped */
102 int keep_all_logs = 0; /* Never erase logfiles, no matter how old
103 they are? */
104 char logfile_suffix[21] = ".%d%b%Y"; /* Format of logfile suffix. */
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[HANDLEN + 5]; /* 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 int switch_logfiles_at = 300; /* When (military time) to switch logfiles */
116 char version[81]; /* Version info (long form) */
117 char ver[41]; /* Version info (short form) */
118 char egg_xtra[2048]; /* Patch info */
119 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
120 int do_restart = 0; /* .restart has been called, restart asap */
121 int die_on_sighup = 0; /* die if bot receives SIGHUP */
122 int die_on_sigterm = 1; /* die if bot receives SIGTERM */
123 int resolve_timeout = 15; /* hostname/address lookup timeout */
124 char quit_msg[1024]; /* quit message */
125 time_t now; /* duh, now :) */
126
127 /* Traffic stats
128 */
129 unsigned long otraffic_irc = 0;
130 unsigned long otraffic_irc_today = 0;
131 unsigned long otraffic_bn = 0;
132 unsigned long otraffic_bn_today = 0;
133 unsigned long otraffic_dcc = 0;
134 unsigned long otraffic_dcc_today = 0;
135 unsigned long otraffic_filesys = 0;
136 unsigned long otraffic_filesys_today = 0;
137 unsigned long otraffic_trans = 0;
138 unsigned long otraffic_trans_today = 0;
139 unsigned long otraffic_unknown = 0;
140 unsigned long otraffic_unknown_today = 0;
141 unsigned long itraffic_irc = 0;
142 unsigned long itraffic_irc_today = 0;
143 unsigned long itraffic_bn = 0;
144 unsigned long itraffic_bn_today = 0;
145 unsigned long itraffic_dcc = 0;
146 unsigned long itraffic_dcc_today = 0;
147 unsigned long itraffic_trans = 0;
148 unsigned long itraffic_trans_today = 0;
149 unsigned long itraffic_unknown = 0;
150 unsigned long itraffic_unknown_today = 0;
151
152 #ifdef DEBUG_CONTEXT
153 /* Context storage for fatal crashes */
154 char cx_file[16][30];
155 char cx_note[16][256];
156 int cx_line[16];
157 int cx_ptr = 0;
158 #endif
159
160
161 void fatal(const char *s, int recoverable)
162 {
163 int i;
164
165 putlog(LOG_MISC, "*", "* %s", s);
166 flushlogs();
167 for (i = 0; i < dcc_total; i++)
168 if (dcc[i].sock >= 0)
169 killsock(dcc[i].sock);
170 unlink(pid_file);
171 if (!recoverable) {
172 bg_send_quit(BG_ABORT);
173 exit(1);
174 }
175 }
176
177
178 int expmem_chanprog(), expmem_users(), expmem_misc(), expmem_dccutil(),
179 expmem_botnet(), expmem_tcl(), expmem_tclhash(), expmem_net(),
180 expmem_modules(int), expmem_language(), expmem_tcldcc();
181
182 /* For mem.c : calculate memory we SHOULD be using
183 */
184 int expected_memory(void)
185 {
186 int tot;
187
188 tot = expmem_chanprog() + expmem_users() + expmem_misc() +
189 expmem_dccutil() + expmem_botnet() + expmem_tcl() + expmem_tclhash() +
190 expmem_net() + expmem_modules(0) + expmem_language() + expmem_tcldcc();
191 return tot;
192 }
193
194 static void check_expired_dcc()
195 {
196 int i;
197
198 for (i = 0; i < dcc_total; i++)
199 if (dcc[i].type && dcc[i].type->timeout_val &&
200 ((now - dcc[i].timeval) > *(dcc[i].type->timeout_val))) {
201 if (dcc[i].type->timeout)
202 dcc[i].type->timeout(i);
203 else if (dcc[i].type->eof)
204 dcc[i].type->eof(i);
205 else
206 continue;
207 /* Only timeout 1 socket per cycle, too risky for more */
208 return;
209 }
210 }
211
212 #ifdef DEBUG_CONTEXT
213 static int nested_debug = 0;
214
215 void write_debug()
216 {
217 int x;
218 char s[25];
219 int y;
220
221 if (nested_debug) {
222 /* Yoicks, if we have this there's serious trouble!
223 * All of these are pretty reliable, so we'll try these.
224 *
225 * NOTE: dont try and display context-notes in here, it's
226 * _not_ safe <cybah>
227 */
228 x = creat("DEBUG.DEBUG", 0644);
229 setsock(x, SOCK_NONSOCK);
230 if (x >= 0) {
231 strncpyz(s, ctime(&now), sizeof s);
232 dprintf(-x, "Debug (%s) written %s\n", ver, s);
233 dprintf(-x, "Please report problem to bugs@eggheads.org\n");
234 dprintf(-x, "after a visit to http://www.eggheads.org/bugzilla/\n");
235 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
236 dprintf(-x, "Context: ");
237 cx_ptr = cx_ptr & 15;
238 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
239 dprintf(-x, "%s/%d,\n ", cx_file[y], cx_line[y]);
240 dprintf(-x, "%s/%d\n\n", cx_file[y], cx_line[y]);
241 killsock(x);
242 close(x);
243 }
244 bg_send_quit(BG_ABORT);
245 exit(1); /* Dont even try & tell people about, that may
246 have caused the fault last time. */
247 } else
248 nested_debug = 1;
249 putlog(LOG_MISC, "*", "* Last context: %s/%d [%s]", cx_file[cx_ptr],
250 cx_line[cx_ptr], cx_note[cx_ptr][0] ? cx_note[cx_ptr] : "");
251 putlog(LOG_MISC, "*", "* Please REPORT this BUG!");
252 putlog(LOG_MISC, "*", "* Check doc/BUG-REPORT on how to do so.");
253 x = creat("DEBUG", 0644);
254 setsock(x, SOCK_NONSOCK);
255 if (x < 0) {
256 putlog(LOG_MISC, "*", "* Failed to write DEBUG");
257 } else {
258 strncpyz(s, ctime(&now), sizeof s);
259 dprintf(-x, "Debug (%s) written %s\n", ver, s);
260 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
261 #ifdef STATIC
262 dprintf(-x, "STATICALLY LINKED\n");
263 #endif
264
265 /* info library */
266 dprintf(-x, "TCL library: %s\n",
267 ((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
268 interp->result : "*unknown*");
269
270 /* info tclversion */
271 dprintf(-x, "TCL version: %s (header version %s)\n",
272 ((interp) && (Tcl_Eval(interp, "info tclversion") == TCL_OK)) ?
273 interp->result : "*unknown*", TCL_VERSION);
274
275 /* info patchlevel */
276 dprintf(-x, "TCL patchlevel: %s (header patchlevel %s)\n",
277 ((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
278 interp->result : "*unknown*",
279 TCL_PATCH_LEVEL ? TCL_PATCH_LEVEL : "*unknown*");
280
281 #if HAVE_TCL_THREADS
282 dprintf(-x, "TCL is threaded\n");
283 #else
284 dprintf(-x, "TCL isn't threaded\n");
285 #endif
286
287 #ifdef CCFLAGS
288 dprintf(-x, "Compile flags: %s\n", CCFLAGS);
289 #endif
290 #ifdef LDFLAGS
291 dprintf(-x, "Link flags: %s\n", LDFLAGS);
292 #endif
293 #ifdef STRIPFLAGS
294 dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
295 #endif
296
297 dprintf(-x, "Context: ");
298 cx_ptr = cx_ptr & 15;
299 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
300 dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
301 (cx_note[y][0]) ? cx_note[y] : "");
302 dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
303 (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
304 tell_dcc(-x);
305 dprintf(-x, "\n");
306 debug_mem_to_dcc(-x);
307 killsock(x);
308 close(x);
309 putlog(LOG_MISC, "*", "* Wrote DEBUG");
310 }
311 }
312 #endif
313
314 static void got_bus(int z)
315 {
316 #ifdef DEBUG_CONTEXT
317 write_debug();
318 #endif
319 fatal("BUS ERROR -- CRASHING!", 1);
320 #ifdef SA_RESETHAND
321 kill(getpid(), SIGBUS);
322 #else
323 bg_send_quit(BG_ABORT);
324 exit(1);
325 #endif
326 }
327
328 static void got_segv(int z)
329 {
330 #ifdef DEBUG_CONTEXT
331 write_debug();
332 #endif
333 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
334 #ifdef SA_RESETHAND
335 kill(getpid(), SIGSEGV);
336 #else
337 bg_send_quit(BG_ABORT);
338 exit(1);
339 #endif
340 }
341
342 static void got_fpe(int z)
343 {
344 #ifdef DEBUG_CONTEXT
345 write_debug();
346 #endif
347 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
348 }
349
350 static void got_term(int z)
351 {
352 write_userfile(-1);
353 check_tcl_event("sigterm");
354 if (die_on_sigterm) {
355 botnet_send_chat(-1, botnetnick, "ACK, I've been terminated!");
356 fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
357 } else {
358 putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
359 }
360 }
361
362 static void got_quit(int z)
363 {
364 check_tcl_event("sigquit");
365 putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
366 return;
367 }
368
369 static void got_hup(int z)
370 {
371 write_userfile(-1);
372 check_tcl_event("sighup");
373 if (die_on_sighup) {
374 fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
375 } else
376 putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
377 do_restart = -2;
378 return;
379 }
380
381 /* A call to resolver (gethostbyname, etc) timed out
382 */
383 static void got_alarm(int z)
384 {
385 longjmp(alarmret, 1);
386
387 /* -Never reached- */
388 }
389
390 /* Got ILL signal -- log context and continue
391 */
392 static void got_ill(int z)
393 {
394 check_tcl_event("sigill");
395 #ifdef DEBUG_CONTEXT
396 putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
397 cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
398 #endif
399 }
400
401 #ifdef DEBUG_CONTEXT
402 /* Context */
403 void eggContext(const char *file, int line, const char *module)
404 {
405 char x[31], *p;
406
407 p = strrchr(file, '/');
408 if (!module) {
409 strncpyz(x, p ? p + 1 : file, sizeof x);
410 } else
411 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
412 cx_ptr = ((cx_ptr + 1) & 15);
413 strcpy(cx_file[cx_ptr], x);
414 cx_line[cx_ptr] = line;
415 cx_note[cx_ptr][0] = 0;
416 }
417
418 /* Called from the ContextNote macro.
419 */
420 void eggContextNote(const char *file, int line, const char *module,
421 const char *note)
422 {
423 char x[31], *p;
424
425 p = strrchr(file, '/');
426 if (!module) {
427 strncpyz(x, p ? p + 1 : file, sizeof x);
428 } else
429 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
430 cx_ptr = ((cx_ptr + 1) & 15);
431 strcpy(cx_file[cx_ptr], x);
432 cx_line[cx_ptr] = line;
433 strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
434 }
435 #endif
436
437 #ifdef DEBUG_ASSERT
438 /* Called from the Assert macro.
439 */
440 void eggAssert(const char *file, int line, const char *module)
441 {
442 #ifdef DEBUG_CONTEXT
443 write_debug();
444 #endif
445 if (!module)
446 putlog(LOG_MISC, "*", "* In file %s, line %u", file, line);
447 else
448 putlog(LOG_MISC, "*", "* In file %s:%s, line %u", module, file, line);
449 fatal("ASSERT FAILED -- CRASHING!", 1);
450 }
451 #endif
452
453 static void do_arg(char *s)
454 {
455 char x[1024], *z = x;
456 int i;
457
458 if (s[0] == '-')
459 for (i = 1; i < strlen(s); i++) {
460 switch (s[i]) {
461 case 'n':
462 backgrd = 0;
463 break;
464 case 'c':
465 con_chan = 1;
466 term_z = 0;
467 break;
468 case 't':
469 con_chan = 0;
470 term_z = 1;
471 break;
472 case 'm':
473 make_userfile = 1;
474 break;
475 case 'v':
476 strncpyz(x, egg_version, sizeof x);
477 newsplit(&z);
478 newsplit(&z);
479 printf("%s\n", version);
480 if (z[0])
481 printf(" (patches: %s)\n", z);
482 bg_send_quit(BG_ABORT);
483 exit(0);
484 break; /* this should never be reached */
485 case 'h':
486 printf("\n%s\n\n", version);
487 printf(_("Command line arguments:\n\
488 -h help\n\
489 -v print version and exit\n\
490 -n don't go into the background\n\
491 -c (with -n) display channel stats every 10 seconds\n\
492 -t (with -n) use terminal to simulate dcc-chat\n\
493 -m userfile creation mode\n\
494 optional config filename (default 'eggdrop.conf')\n"));
495 printf("\n");
496 bg_send_quit(BG_ABORT);
497 exit(0);
498 break; /* this should never be reached */
499 }
500 } else
501 strncpyz(configfile, s, sizeof configfile);
502 }
503
504 void backup_userfile(void)
505 {
506 char s[125];
507
508 putlog(LOG_MISC, "*", _("Backing up user file..."));
509 egg_snprintf(s, sizeof s, "%s~bak", userfile);
510 copyfile(userfile, s);
511 }
512
513 /* Timer info */
514 static int lastmin = 99;
515 static time_t then;
516 static struct tm nowtm;
517
518 /* Called once a second.
519 *
520 * Note: Try to not put any Context lines in here (guppy 21Mar2000).
521 */
522 static void core_secondly()
523 {
524 static int cnt = 0;
525 int miltime;
526
527 do_check_timers(&utimer); /* Secondly timers */
528 cnt++;
529 if (cnt >= 10) { /* Every 10 seconds */
530 cnt = 0;
531 check_expired_dcc();
532 if (con_chan && !backgrd) {
533 dprintf(DP_STDOUT, "\033[2J\033[1;1H");
534 tell_verbose_status(DP_STDOUT);
535 do_module_report(DP_STDOUT, 0, "server");
536 do_module_report(DP_STDOUT, 0, "channels");
537 tell_mem_status_dcc(DP_STDOUT);
538 }
539 }
540 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
541 if (nowtm.tm_min != lastmin) {
542 int i = 0;
543
544 /* Once a minute */
545 lastmin = (lastmin + 1) % 60;
546 call_hook(HOOK_MINUTELY);
547 check_expired_ignores();
548 autolink_cycle(NULL); /* Attempt autolinks */
549 /* In case for some reason more than 1 min has passed: */
550 while (nowtm.tm_min != lastmin) {
551 /* Timer drift, dammit */
552 debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
553 i++;
554 lastmin = (lastmin + 1) % 60;
555 call_hook(HOOK_MINUTELY);
556 }
557 if (i > 1)
558 putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
559 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
560 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
561 call_hook(HOOK_5MINUTELY);
562 check_botnet_pings();
563 if (!quick_logs) {
564 flushlogs();
565 check_logsize();
566 }
567 if (!miltime) { /* At midnight */
568 char s[25];
569 int j;
570
571 strncpyz(s, ctime(&now), sizeof s);
572 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
573 call_hook(HOOK_BACKUP);
574 for (j = 0; j < max_logs; j++) {
575 if (logs[j].filename != NULL && logs[j].f != NULL) {
576 fclose(logs[j].f);
577 logs[j].f = NULL;
578 }
579 }
580 }
581 }
582 if (nowtm.tm_min == notify_users_at)
583 call_hook(HOOK_HOURLY);
584 /* These no longer need checking since they are all check vs minutely
585 * settings and we only get this far on the minute.
586 */
587 if (miltime == switch_logfiles_at) {
588 call_hook(HOOK_DAILY);
589 if (!keep_all_logs) {
590 putlog(LOG_MISC, "*", _("Switching logfiles..."));
591 for (i = 0; i < max_logs; i++)
592 if (logs[i].filename) {
593 char s[1024];
594
595 if (logs[i].f) {
596 fclose(logs[i].f);
597 logs[i].f = NULL;
598 }
599 egg_snprintf(s, sizeof s, "%s.yesterday", logs[i].filename);
600 unlink(s);
601 movefile(logs[i].filename, s);
602 }
603 }
604 }
605 }
606 }
607
608 static void core_minutely()
609 {
610 check_tcl_time(&nowtm);
611 do_check_timers(&timer);
612 if (quick_logs != 0) {
613 flushlogs();
614 check_logsize();
615 }
616 }
617
618 static void core_hourly()
619 {
620 write_userfile(-1);
621 }
622
623 static void event_rehash()
624 {
625 check_tcl_event("rehash");
626 }
627
628 static void event_prerehash()
629 {
630 check_tcl_event("prerehash");
631 }
632
633 static void event_save()
634 {
635 check_tcl_event("save");
636 }
637
638 static void event_logfile()
639 {
640 check_tcl_event("logfile");
641 }
642
643 static void event_resettraffic()
644 {
645 otraffic_irc += otraffic_irc_today;
646 itraffic_irc += itraffic_irc_today;
647 otraffic_bn += otraffic_bn_today;
648 itraffic_bn += itraffic_bn_today;
649 otraffic_dcc += otraffic_dcc_today;
650 itraffic_dcc += itraffic_dcc_today;
651 otraffic_unknown += otraffic_unknown_today;
652 itraffic_unknown += itraffic_unknown_today;
653 otraffic_trans += otraffic_trans_today;
654 itraffic_trans += itraffic_trans_today;
655 otraffic_irc_today = otraffic_bn_today = 0;
656 otraffic_dcc_today = otraffic_unknown_today = 0;
657 itraffic_irc_today = itraffic_bn_today = 0;
658 itraffic_dcc_today = itraffic_unknown_today = 0;
659 itraffic_trans_today = otraffic_trans_today = 0;
660 }
661
662 static void event_loaded()
663 {
664 check_tcl_event("loaded");
665 }
666
667 void kill_tcl();
668 extern module_entry *module_list;
669 void restart_chons();
670
671 #ifdef STATIC
672 void check_static(char *, char *(*)());
673
674 #include "mod/static.h"
675 #endif
676 int init_mem(), init_dcc_max(), init_userent(), init_misc(), init_bots(),
677 init_net(), init_modules(), init_tcl(int, char **),
678 init_language(int);
679
680 void patch(const char *str)
681 {
682 char *p = strchr(egg_version, '+');
683
684 if (!p)
685 p = &egg_version[strlen(egg_version)];
686 sprintf(p, "+%s", str);
687 egg_numver++;
688 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
689 }
690
691 static inline void garbage_collect(void)
692 {
693 static u_8bit_t run_cnt = 0;
694
695 if (run_cnt == 3)
696 garbage_collect_tclhash();
697 else
698 run_cnt++;
699 }
700
701 int main(int argc, char **argv)
702 {
703 int xx, i;
704 char buf[520], s[25];
705 FILE *f;
706 struct sigaction sv;
707 struct chanset_t *chan;
708
709 #ifdef DEBUG_MEM
710 /* Make sure it can write core, if you make debug. Else it's pretty
711 * useless (dw)
712 */
713 {
714 #include <sys/resource.h>
715 struct rlimit cdlim;
716
717 cdlim.rlim_cur = RLIM_INFINITY;
718 cdlim.rlim_max = RLIM_INFINITY;
719 setrlimit(RLIMIT_CORE, &cdlim);
720 }
721 #endif
722
723 /* Initialise context list */
724 for (i = 0; i < 16; i++)
725 Context;
726
727 #include "patch.h"
728 /* Version info! */
729 egg_snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
730 egg_snprintf(version, sizeof version, "Eggdrop v%s (C)1997 Robey Pointer (C)2001 Eggheads",
731 egg_version);
732 /* Now add on the patchlevel (for Tcl) */
733 sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
734 strcat(egg_version, egg_xtra);
735 #ifdef STOP_UAC
736 {
737 int nvpair[2];
738
739 nvpair[0] = SSIN_UACPROC;
740 nvpair[1] = UAC_NOPRINT;
741 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
742 }
743 #endif
744
745 /* Set up error traps: */
746 sv.sa_handler = got_bus;
747 sigemptyset(&sv.sa_mask);
748 #ifdef SA_RESETHAND
749 sv.sa_flags = SA_RESETHAND;
750 #else
751 sv.sa_flags = 0;
752 #endif
753 sigaction(SIGBUS, &sv, NULL);
754 sv.sa_handler = got_segv;
755 sigaction(SIGSEGV, &sv, NULL);
756 #ifdef SA_RESETHAND
757 sv.sa_flags = 0;
758 #endif
759 sv.sa_handler = got_fpe;
760 sigaction(SIGFPE, &sv, NULL);
761 sv.sa_handler = got_term;
762 sigaction(SIGTERM, &sv, NULL);
763 sv.sa_handler = got_hup;
764 sigaction(SIGHUP, &sv, NULL);
765 sv.sa_handler = got_quit;
766 sigaction(SIGQUIT, &sv, NULL);
767 sv.sa_handler = SIG_IGN;
768 sigaction(SIGPIPE, &sv, NULL);
769 sv.sa_handler = got_ill;
770 sigaction(SIGILL, &sv, NULL);
771 sv.sa_handler = got_alarm;
772 sigaction(SIGALRM, &sv, NULL);
773
774 /* Initialize variables and stuff */
775 now = time(NULL);
776 chanset = NULL;
777 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
778 lastmin = nowtm.tm_min;
779 srandom(now % (getpid() + getppid()));
780 init_mem();
781 init_language(1);
782 if (argc > 1)
783 for (i = 1; i < argc; i++)
784 do_arg(argv[i]);
785 printf("\n%s\n", version);
786
787 /* Don't allow eggdrop to run as root */
788 if (((int) getuid() == 0) || ((int) geteuid() == 0))
789 fatal("ERROR: Eggdrop will not run as root!", 0);
790
791 init_dcc_max();
792 init_userent();
793 init_misc();
794 init_bots();
795 init_net();
796 init_modules();
797 if (backgrd)
798 bg_prepare_split();
799 init_tcl(argc, argv);
800 init_language(0);
801 #ifdef STATIC
802 link_statics();
803 #endif
804 strncpyz(s, ctime(&now), sizeof s);
805 strcpy(&s[11], &s[20]);
806 putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
807 chanprog();
808 if (!encrypt_pass) {
809 printf(_("You have installed modules but have not selected an encryption\n\
810 module, please consult the default config file for info.\n"));
811 bg_send_quit(BG_ABORT);
812 exit(1);
813 }
814 i = 0;
815 for (chan = chanset; chan; chan = chan->next)
816 i++;
817 putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
818 botnetnick, i, count_users(userlist));
819 cache_miss = 0;
820 cache_hit = 0;
821 egg_snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
822
823 /* Check for pre-existing eggdrop! */
824 f = fopen(pid_file, "r");
825 if (f != NULL) {
826 fgets(s, 10, f);
827 xx = atoi(s);
828 kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
829 is used */
830 if (errno != ESRCH) {
831 printf(_("I detect %s already running from this directory.\n"), origbotname);
832 printf(_("If this is incorrect, erase the %s\n"), pid_file);
833 bg_send_quit(BG_ABORT);
834 exit(1);
835 }
836 }
837
838 /* Move into background? */
839 if (backgrd) {
840 #ifndef CYGWIN_HACKS
841 bg_do_split();
842 } else { /* !backgrd */
843 #endif
844 xx = getpid();
845 if (xx != 0) {
846 FILE *fp;
847
848 /* Write pid to file */
849 unlink(pid_file);
850 fp = fopen(pid_file, "w");
851 if (fp != NULL) {
852 fprintf(fp, "%u\n", xx);
853 if (fflush(fp)) {
854 /* Let the bot live since this doesn't appear to be a botchk */
855 printf(_("* Warning! Could not write %s file!\n"), pid_file);
856 fclose(fp);
857 unlink(pid_file);
858 } else
859 fclose(fp);
860 } else
861 printf(_("* Warning! Could not write %s file!\n"), pid_file);
862 #ifdef CYGWIN_HACKS
863 printf("Launched into the background (pid: %d)\n\n", xx);
864 #endif
865 }
866 }
867
868 use_stderr = 0; /* Stop writing to stderr now */
869 if (backgrd) {
870 /* Ok, try to disassociate from controlling terminal (finger cross) */
871 #if HAVE_SETPGID && !defined(CYGWIN_HACKS)
872 setpgid(0, 0);
873 #endif
874 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
875 freopen("/dev/null", "r", stdin);
876 freopen("/dev/null", "w", stdout);
877 freopen("/dev/null", "w", stderr);
878 #ifdef CYGWIN_HACKS
879 FreeConsole();
880 #endif
881 }
882
883 /* Terminal emulating dcc chat */
884 if (!backgrd && term_z) {
885 int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
886
887 dcc[n].addr[0] = '\0';
888 dcc[n].sock = STDOUT;
889 dcc[n].timeval = now;
890 dcc[n].u.chat->con_flags = conmask;
891 dcc[n].u.chat->strip_flags = STRIP_ALL;
892 dcc[n].status = STAT_ECHO;
893 strcpy(dcc[n].nick, "HQ");
894 strcpy(dcc[n].host, "llama@console");
895 dcc[n].user = get_user_by_handle(userlist, "HQ");
896 /* Make sure there's an innocuous HQ user if needed */
897 if (!dcc[n].user) {
898 userlist = adduser(userlist, "HQ", "none", "-", USER_PARTY);
899 dcc[n].user = get_user_by_handle(userlist, "HQ");
900 }
901 setsock(STDOUT, 0); /* Entry in net table */
902 dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
903 dcc_chatter(n);
904 }
905
906 then = now;
907 online_since = now;
908 autolink_cycle(NULL); /* Hurry and connect to tandem bots */
909 add_help_reference("cmds1.help");
910 add_help_reference("cmds2.help");
911 add_help_reference("core.help");
912 add_hook(HOOK_SECONDLY, (Function) core_secondly);
913 add_hook(HOOK_MINUTELY, (Function) core_minutely);
914 add_hook(HOOK_HOURLY, (Function) core_hourly);
915 add_hook(HOOK_REHASH, (Function) event_rehash);
916 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
917 add_hook(HOOK_USERFILE, (Function) event_save);
918 add_hook(HOOK_BACKUP, (Function) backup_userfile);
919 add_hook(HOOK_DAILY, (Function) event_logfile);
920 add_hook(HOOK_DAILY, (Function) event_resettraffic);
921 add_hook(HOOK_LOADED, (Function) event_loaded);
922
923 call_hook(HOOK_LOADED);
924
925 debug0("main: entering loop");
926 while (1) {
927 int socket_cleanup = 0;
928
929 #if !defined(HAVE_PRE7_5_TCL)
930 /* Process a single tcl event */
931 Tcl_DoOneEvent(TCL_ALL_EVENTS | TCL_DONT_WAIT);
932 #endif
933
934 /* Lets move some of this here, reducing the numer of actual
935 * calls to periodic_timers
936 */
937 now = time(NULL);
938 random(); /* Woop, lets really jumble things */
939 if (now != then) { /* Once a second */
940 call_hook(HOOK_SECONDLY);
941 then = now;
942 }
943
944 /* Only do this every so often. */
945 if (!socket_cleanup) {
946 socket_cleanup = 5;
947
948 /* Remove dead dcc entries. */
949 dcc_remove_lost();
950
951 /* Check for server or dcc activity. */
952 dequeue_sockets();
953 } else
954 socket_cleanup--;
955
956 /* Free unused structures. */
957 garbage_collect();
958
959 xx = sockgets(buf, &i);
960 if (xx >= 0) { /* Non-error */
961 int idx;
962
963 for (idx = 0; idx < dcc_total; idx++)
964 if (dcc[idx].sock == xx) {
965 if (dcc[idx].type && dcc[idx].type->activity) {
966 /* Traffic stats */
967 if (dcc[idx].type->name) {
968 if (!strncmp(dcc[idx].type->name, "BOT", 3))
969 itraffic_bn_today += strlen(buf) + 1;
970 else if (!strcmp(dcc[idx].type->name, "SERVER"))
971 itraffic_irc_today += strlen(buf) + 1;
972 else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
973 itraffic_dcc_today += strlen(buf) + 1;
974 else if (!strncmp(dcc[idx].type->name, "FILES", 5))
975 itraffic_dcc_today += strlen(buf) + 1;
976 else if (!strcmp(dcc[idx].type->name, "SEND"))
977 itraffic_trans_today += strlen(buf) + 1;
978 else if (!strncmp(dcc[idx].type->name, "GET", 3))
979 itraffic_trans_today += strlen(buf) + 1;
980 else
981 itraffic_unknown_today += strlen(buf) + 1;
982 }
983 dcc[idx].type->activity(idx, buf, i);
984 } else
985 putlog(LOG_MISC, "*",
986 "!!! untrapped dcc activity: type %s, sock %d",
987 dcc[idx].type->name, dcc[idx].sock);
988 break;
989 }
990 } else if (xx == -1) { /* EOF from someone */
991 int idx;
992
993 if (i == STDOUT && !backgrd)
994 fatal("END OF FILE ON TERMINAL", 0);
995 for (idx = 0; idx < dcc_total; idx++)
996 if (dcc[idx].sock == i) {
997 if (dcc[idx].type && dcc[idx].type->eof)
998 dcc[idx].type->eof(idx);
999 else {
1000 putlog(LOG_MISC, "*",
1001 "*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
1002 i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
1003 killsock(i);
1004 lostdcc(idx);
1005 }
1006 idx = dcc_total + 1;
1007 }
1008 if (idx == dcc_total) {
1009 putlog(LOG_MISC, "*",
1010 "(@) EOF socket %d, not a dcc socket, not anything.", i);
1011 close(i);
1012 killsock(i);
1013 }
1014 } else if (xx == -2 && errno != EINTR) { /* select() error */
1015 putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
1016 for (i = 0; i < dcc_total; i++) {
1017 if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno = EBADF)) {
1018 putlog(LOG_MISC, "*",
1019 "DCC socket %d (type %d, name '%s') expired -- pfft",
1020 dcc[i].sock, dcc[i].type, dcc[i].nick);
1021 killsock(dcc[i].sock);
1022 lostdcc(i);
1023 i--;
1024 }
1025 }
1026 } else if (xx == -3) {
1027 call_hook(HOOK_IDLE);
1028 socket_cleanup = 0; /* If we've been idle, cleanup & flush */
1029 }
1030
1031 if (do_restart) {
1032 if (do_restart == -2)
1033 rehash();
1034 else {
1035 /* Unload as many modules as possible */
1036 int f = 1;
1037 module_entry *p;
1038 Function x;
1039 char xx[256];
1040
1041 /* oops, I guess we should call this event before tcl is restarted */
1042 check_tcl_event("prerestart");
1043
1044 while (f) {
1045 f = 0;
1046 for (p = module_list; p != NULL; p = p->next) {
1047 dependancy *d = dependancy_list;
1048 int ok = 1;
1049
1050 while (ok && d) {
1051 if (d->needed == p)
1052 ok = 0;
1053 d = d->next;
1054 }
1055 if (ok) {
1056 strcpy(xx, p->name);
1057 if (module_unload(xx, origbotname) == NULL) {
1058 f = 1;
1059 break;
1060 }
1061 }
1062 }
1063 }
1064 p = module_list;
1065 if (p && p->next && p->next->next)
1066 /* Should be only 2 modules now - blowfish (or some other
1067 encryption module) and eggdrop. */
1068 putlog(LOG_MISC, "*", _("Stagnant module; there WILL be memory leaks!"));
1069 flushlogs();
1070 kill_tcl();
1071 init_tcl(argc, argv);
1072 init_language(0);
1073 /* We expect the encryption module as the current module pointed
1074 * to by `module_list'.
1075 */
1076 x = p->funcs[MODCALL_START];
1077 /* `NULL' indicates that we just recently restarted. The module
1078 * is expected to re-initialise as needed.
1079 */
1080 x(NULL);
1081 rehash();
1082 restart_chons();
1083 call_hook(HOOK_LOADED);
1084 }
1085 do_restart = 0;
1086 }
1087 }
1088 }

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