/[cvs]/eggdrop1.8/src/main.c
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Contents of /eggdrop1.8/src/main.c

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Revision 1.4 - (show annotations) (download) (as text)
Tue Oct 19 12:13:33 2010 UTC (8 years, 7 months ago) by pseudo
Branch: MAIN
Changes since 1.3: +25 -2 lines
File MIME type: text/x-chdr
Added full SSL support including Tcl commands.
Added support for certificate authentication.
Added support for botnet and partyline encryption using ssl.
Documented the new features and commands.
Fixed add_server() problems with IPv6 addresses in the server list.

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 1.3 2010/10/10 21:24:43 pseudo Exp $
9 */
10 /*
11 * Copyright (C) 1997 Robey Pointer
12 * Copyright (C) 1999 - 2010 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
36 #include <fcntl.h>
37 #include <errno.h>
38 #include <signal.h>
39 #include <netdb.h>
40 #include <setjmp.h>
41
42 #ifdef TIME_WITH_SYS_TIME
43 # include <sys/time.h>
44 # include <time.h>
45 #else
46 # ifdef HAVE_SYS_TIME_H
47 # include <sys/time.h>
48 # else
49 # include <time.h>
50 # endif
51 #endif
52
53 #ifdef STOP_UAC /* OSF/1 complains a lot */
54 # include <sys/sysinfo.h>
55 # define UAC_NOPRINT 0x00000001 /* Don't report unaligned fixups */
56 #endif
57
58 #include "chan.h"
59 #include "modules.h"
60 #include "tandem.h"
61 #include "bg.h"
62
63 #ifdef DEBUG /* For debug compile */
64 # include <sys/resource.h> /* setrlimit() */
65 #endif
66
67 #ifdef CYGWIN_HACKS
68 # include <windows.h>
69 #endif
70
71 #ifndef _POSIX_SOURCE
72 # define _POSIX_SOURCE 1 /* Solaris needs this */
73 #endif
74
75 extern char origbotname[], userfile[], botnetnick[];
76 extern int dcc_total, conmask, cache_hit, cache_miss, max_logs, quick_logs,
77 quiet_save;
78 extern struct dcc_t *dcc;
79 extern struct userrec *userlist;
80 extern struct chanset_t *chanset;
81 extern log_t *logs;
82 extern Tcl_Interp *interp;
83 extern tcl_timer_t *timer, *utimer;
84 extern sigjmp_buf alarmret;
85 time_t now;
86 static int argc;
87 static char **argv;
88
89 /*
90 * Please use the PATCH macro instead of directly altering the version
91 * string from now on (it makes it much easier to maintain patches).
92 * Also please read the README file regarding your rights to distribute
93 * modified versions of this bot.
94 */
95
96 char egg_version[1024] = "1.8.0";
97 int egg_numver = 1080000;
98
99 char notify_new[121] = ""; /* Person to send a note to for new users */
100 int default_flags = 0; /* Default user flags */
101 int default_uflags = 0; /* Default user-definied flags */
102
103 int backgrd = 1; /* Run in the background? */
104 int con_chan = 0; /* Foreground: constantly display channel stats? */
105 int term_z = 0; /* Foreground: use the terminal as a partyline? */
106 int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
107
108 char configfile[121] = "eggdrop.conf"; /* Default config file name */
109 char pid_file[120]; /* Name of the pid file */
110 char helpdir[121] = "help/"; /* Directory of help files */
111 char textdir[121] = "text/"; /* Directory for text files */
112
113 int keep_all_logs = 0; /* Never erase logfiles? */
114 char logfile_suffix[21] = ".%d%b%Y"; /* Format of logfile suffix */
115 int switch_logfiles_at = 300; /* When to switch logfiles */
116
117 time_t online_since; /* time that the bot was started */
118
119 int make_userfile = 0; /* Using bot in userfile-creation mode? */
120 char owner[121] = ""; /* Permanent owner(s) of the bot */
121
122 int save_users_at = 0; /* Minutes past the hour to save the userfile? */
123 int notify_users_at = 0; /* Minutes past the hour to notify users of notes? */
124
125 char version[81]; /* Version info (long form) */
126 char ver[41]; /* Version info (short form) */
127 char egg_xtra[2048]; /* Patch info */
128
129 int do_restart = 0; /* .restart has been called, restart ASAP */
130 int die_on_sighup = 0; /* Die if bot receives SIGHUP */
131 int die_on_sigterm = 1; /* Die if bot receives SIGTERM */
132 int resolve_timeout = 15; /* Hostname/address lookup timeout */
133 char quit_msg[1024]; /* Quit message */
134
135 /* Traffic stats */
136 unsigned long otraffic_irc = 0;
137 unsigned long otraffic_irc_today = 0;
138 unsigned long otraffic_bn = 0;
139 unsigned long otraffic_bn_today = 0;
140 unsigned long otraffic_dcc = 0;
141 unsigned long otraffic_dcc_today = 0;
142 unsigned long otraffic_filesys = 0;
143 unsigned long otraffic_filesys_today = 0;
144 unsigned long otraffic_trans = 0;
145 unsigned long otraffic_trans_today = 0;
146 unsigned long otraffic_unknown = 0;
147 unsigned long otraffic_unknown_today = 0;
148 unsigned long itraffic_irc = 0;
149 unsigned long itraffic_irc_today = 0;
150 unsigned long itraffic_bn = 0;
151 unsigned long itraffic_bn_today = 0;
152 unsigned long itraffic_dcc = 0;
153 unsigned long itraffic_dcc_today = 0;
154 unsigned long itraffic_trans = 0;
155 unsigned long itraffic_trans_today = 0;
156 unsigned long itraffic_unknown = 0;
157 unsigned long itraffic_unknown_today = 0;
158
159 #ifdef DEBUG_CONTEXT
160 /* Context storage for fatal crashes */
161 char cx_file[16][30];
162 char cx_note[16][256];
163 int cx_line[16];
164 int cx_ptr = 0;
165 #endif
166
167 #ifdef TLS
168 int ssl_cleanup();
169 #endif
170
171 void fatal(const char *s, int recoverable)
172 {
173 int i;
174
175 putlog(LOG_MISC, "*", "* %s", s);
176 flushlogs();
177 for (i = 0; i < dcc_total; i++)
178 if (dcc[i].sock >= 0)
179 killsock(dcc[i].sock);
180 #ifdef TLS
181 ssl_cleanup();
182 #endif
183 unlink(pid_file);
184 if (!recoverable) {
185 bg_send_quit(BG_ABORT);
186 exit(1);
187 }
188 }
189
190 int expmem_chanprog();
191 int expmem_users();
192 int expmem_misc();
193 int expmem_dccutil();
194 int expmem_botnet();
195 int expmem_tcl();
196 int expmem_tclhash();
197 int expmem_net();
198 int expmem_modules(int);
199 int expmem_language();
200 int expmem_tcldcc();
201 int expmem_tclmisc();
202 int expmem_dns();
203 #ifdef TLS
204 int expmem_tls();
205 #endif
206
207 /* For mem.c : calculate memory we SHOULD be using
208 */
209 int expected_memory(void)
210 {
211 int tot;
212
213 tot = expmem_chanprog() + expmem_users() + expmem_misc() + expmem_dccutil() +
214 expmem_botnet() + expmem_tcl() + expmem_tclhash() + expmem_net() +
215 expmem_modules(0) + expmem_language() + expmem_tcldcc() +
216 expmem_tclmisc() + expmem_dns();
217 #ifdef TLS
218 tot += expmem_tls();
219 #endif
220 return tot;
221 }
222
223 static void check_expired_dcc()
224 {
225 int i;
226
227 for (i = 0; i < dcc_total; i++)
228 if (dcc[i].type && dcc[i].type->timeout_val &&
229 ((now - dcc[i].timeval) > *(dcc[i].type->timeout_val))) {
230 if (dcc[i].type->timeout)
231 dcc[i].type->timeout(i);
232 else if (dcc[i].type->eof)
233 dcc[i].type->eof(i);
234 else
235 continue;
236 /* Only timeout 1 socket per cycle, too risky for more */
237 return;
238 }
239 }
240
241 #ifndef DEBUG_CONTEXT
242 #define write_debug() do {} while (0)
243 #else
244 static int nested_debug = 0;
245
246 static void write_debug()
247 {
248 int x;
249 char s[25];
250 int y;
251
252 if (nested_debug) {
253 /* Yoicks, if we have this there's serious trouble!
254 * All of these are pretty reliable, so we'll try these.
255 *
256 * NOTE: dont try and display context-notes in here, it's
257 * _not_ safe <cybah>
258 */
259 x = creat("DEBUG.DEBUG", 0644);
260 setsock(x, SOCK_NONSOCK);
261 if (x >= 0) {
262 strncpyz(s, ctime(&now), sizeof s);
263 dprintf(-x, "Debug (%s) written %s\n", ver, s);
264 dprintf(-x, "Please report problem to bugs@eggheads.org\n");
265 dprintf(-x, "after a visit to http://www.eggheads.org/bugzilla/\n");
266 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
267 dprintf(-x, "Context: ");
268 cx_ptr = cx_ptr & 15;
269 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
270 dprintf(-x, "%s/%d,\n ", cx_file[y], cx_line[y]);
271 dprintf(-x, "%s/%d\n\n", cx_file[y], cx_line[y]);
272 killsock(x);
273 close(x);
274 }
275 bg_send_quit(BG_ABORT);
276 exit(1); /* Dont even try & tell people about, that may
277 * have caused the fault last time. */
278 } else
279 nested_debug = 1;
280 putlog(LOG_MISC, "*", "* Last context: %s/%d [%s]", cx_file[cx_ptr],
281 cx_line[cx_ptr], cx_note[cx_ptr][0] ? cx_note[cx_ptr] : "");
282 putlog(LOG_MISC, "*", "* Please REPORT this BUG!");
283 putlog(LOG_MISC, "*", "* Check doc/BUG-REPORT on how to do so.");
284 x = creat("DEBUG", 0644);
285 setsock(x, SOCK_NONSOCK);
286 if (x < 0) {
287 putlog(LOG_MISC, "*", "* Failed to write DEBUG");
288 } else {
289 strncpyz(s, ctime(&now), sizeof s);
290 dprintf(-x, "Debug (%s) written %s\n", ver, s);
291 dprintf(-x, "Full Patch List: %s\n", egg_xtra);
292 #ifdef STATIC
293 dprintf(-x, "STATICALLY LINKED\n");
294 #endif
295
296 /* info library */
297 dprintf(-x, "Tcl library: %s\n",
298 ((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
299 tcl_resultstring() : "*unknown*");
300
301 /* info tclversion/patchlevel */
302 dprintf(-x, "Tcl version: %s (header version %s)\n",
303 ((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
304 tcl_resultstring() : (Tcl_Eval(interp, "info tclversion") == TCL_OK) ?
305 tcl_resultstring() : "*unknown*", TCL_PATCH_LEVEL ? TCL_PATCH_LEVEL :
306 "*unknown*");
307
308 if (tcl_threaded())
309 dprintf(-x, "Tcl is threaded\n");
310 #ifdef IPV6
311 dprintf(-x, "Compiled with IPv6 support\n");
312 #else
313 dprintf(-x, "Compiled without IPv6 support\n");
314 #endif
315
316 dprintf(-x, "Configure flags: %s\n", EGG_AC_ARGS);
317 #ifdef CCFLAGS
318 dprintf(-x, "Compile flags: %s\n", CCFLAGS);
319 #endif
320
321 #ifdef LDFLAGS
322 dprintf(-x, "Link flags: %s\n", LDFLAGS);
323 #endif
324
325 #ifdef STRIPFLAGS
326 dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
327 #endif
328
329 dprintf(-x, "Context: ");
330 cx_ptr = cx_ptr & 15;
331 for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
332 dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
333 (cx_note[y][0]) ? cx_note[y] : "");
334 dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
335 (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
336 tell_dcc(-x);
337 dprintf(-x, "\n");
338 debug_mem_to_dcc(-x);
339 killsock(x);
340 close(x);
341 putlog(LOG_MISC, "*", "* Wrote DEBUG");
342 }
343 }
344 #endif /* DEBUG_CONTEXT */
345
346 static void got_bus(int z)
347 {
348 write_debug();
349 fatal("BUS ERROR -- CRASHING!", 1);
350 #ifdef SA_RESETHAND
351 kill(getpid(), SIGBUS);
352 #else
353 bg_send_quit(BG_ABORT);
354 exit(1);
355 #endif
356 }
357
358 static void got_segv(int z)
359 {
360 write_debug();
361 fatal("SEGMENT VIOLATION -- CRASHING!", 1);
362 #ifdef SA_RESETHAND
363 kill(getpid(), SIGSEGV);
364 #else
365 bg_send_quit(BG_ABORT);
366 exit(1);
367 #endif
368 }
369
370 static void got_fpe(int z)
371 {
372 write_debug();
373 fatal("FLOATING POINT ERROR -- CRASHING!", 0);
374 }
375
376 static void got_term(int z)
377 {
378 write_userfile(-1);
379 check_tcl_event("sigterm");
380 if (die_on_sigterm) {
381 botnet_send_chat(-1, botnetnick, "ACK, I've been terminated!");
382 fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
383 } else
384 putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
385 }
386
387 static void got_quit(int z)
388 {
389 check_tcl_event("sigquit");
390 putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
391 return;
392 }
393
394 static void got_hup(int z)
395 {
396 write_userfile(-1);
397 check_tcl_event("sighup");
398 if (die_on_sighup) {
399 fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
400 } else
401 putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
402 do_restart = -2;
403 return;
404 }
405
406 /* A call to resolver (gethostbyname, etc) timed out
407 */
408 static void got_alarm(int z)
409 {
410 siglongjmp(alarmret, 1);
411
412 /* -Never reached- */
413 }
414
415 /* Got ILL signal -- log context and continue
416 */
417 static void got_ill(int z)
418 {
419 check_tcl_event("sigill");
420 #ifdef DEBUG_CONTEXT
421 putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
422 cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
423 #endif
424 }
425
426 #ifdef DEBUG_CONTEXT
427 /* Called from the Context macro.
428 */
429 void eggContext(const char *file, int line, const char *module)
430 {
431 char x[31], *p;
432
433 p = strrchr(file, '/');
434 if (!module) {
435 strncpyz(x, p ? p + 1 : file, sizeof x);
436 } else
437 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
438 cx_ptr = ((cx_ptr + 1) & 15);
439 strcpy(cx_file[cx_ptr], x);
440 cx_line[cx_ptr] = line;
441 cx_note[cx_ptr][0] = 0;
442 }
443
444 /* Called from the ContextNote macro.
445 */
446 void eggContextNote(const char *file, int line, const char *module,
447 const char *note)
448 {
449 char x[31], *p;
450
451 p = strrchr(file, '/');
452 if (!module)
453 strncpyz(x, p ? p + 1 : file, sizeof x);
454 else
455 egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
456 cx_ptr = ((cx_ptr + 1) & 15);
457 strcpy(cx_file[cx_ptr], x);
458 cx_line[cx_ptr] = line;
459 strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
460 }
461 #endif /* DEBUG_CONTEXT */
462
463 #ifdef DEBUG_ASSERT
464 /* Called from the Assert macro.
465 */
466 void eggAssert(const char *file, int line, const char *module)
467 {
468 write_debug();
469 if (!module)
470 putlog(LOG_MISC, "*", "* In file %s, line %u", file, line);
471 else
472 putlog(LOG_MISC, "*", "* In file %s:%s, line %u", module, file, line);
473 fatal("ASSERT FAILED -- CRASHING!", 1);
474 }
475 #endif
476
477 static void do_arg(char *s)
478 {
479 char x[512], *z = x;
480 int i;
481
482 if (s[0] == '-')
483 for (i = 1; i < strlen(s); i++) {
484 switch (s[i]) {
485 case 'n':
486 backgrd = 0;
487 break;
488 case 'c':
489 con_chan = 1;
490 term_z = 0;
491 break;
492 case 't':
493 con_chan = 0;
494 term_z = 1;
495 break;
496 case 'm':
497 make_userfile = 1;
498 break;
499 case 'v':
500 strncpyz(x, egg_version, sizeof x);
501 newsplit(&z);
502 newsplit(&z);
503 printf("%s\n", version);
504 if (z[0])
505 printf(" (patches: %s)\n", z);
506 printf("Configured with: " EGG_AC_ARGS "\n");
507 printf("Compiled with: ");
508 #ifdef IPV6
509 printf("IPv6, ");
510 #endif
511 printf("handlen=%d\n", HANDLEN);
512 bg_send_quit(BG_ABORT);
513 exit(0);
514 break; /* this should never be reached */
515 case 'h':
516 printf("\n%s\n\n", version);
517 printf(EGG_USAGE);
518 printf("\n");
519 bg_send_quit(BG_ABORT);
520 exit(0);
521 break; /* this should never be reached */
522 }
523 } else
524 strncpyz(configfile, s, sizeof configfile);
525 }
526
527 void backup_userfile(void)
528 {
529 char s[125];
530
531 if (quiet_save < 2)
532 putlog(LOG_MISC, "*", USERF_BACKUP);
533 egg_snprintf(s, sizeof s, "%s~bak", userfile);
534 copyfile(userfile, s);
535 }
536
537 /* Timer info */
538 static int lastmin = 99;
539 static time_t then;
540 static struct tm nowtm;
541
542 /* Called once a second.
543 *
544 * Note: Try to not put any Context lines in here (guppy 21Mar2000).
545 */
546 static void core_secondly()
547 {
548 static int cnt = 0;
549 int miltime;
550
551 do_check_timers(&utimer); /* Secondly timers */
552 cnt++;
553 if (cnt >= 10) { /* Every 10 seconds */
554 cnt = 0;
555 check_expired_dcc();
556 if (con_chan && !backgrd) {
557 dprintf(DP_STDOUT, "\033[2J\033[1;1H");
558 tell_verbose_status(DP_STDOUT);
559 do_module_report(DP_STDOUT, 0, "server");
560 do_module_report(DP_STDOUT, 0, "channels");
561 tell_mem_status_dcc(DP_STDOUT);
562 }
563 }
564 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
565 if (nowtm.tm_min != lastmin) {
566 int i = 0;
567
568 /* Once a minute */
569 lastmin = (lastmin + 1) % 60;
570 call_hook(HOOK_MINUTELY);
571 check_expired_ignores();
572 autolink_cycle(NULL); /* Attempt autolinks */
573 /* In case for some reason more than 1 min has passed: */
574 while (nowtm.tm_min != lastmin) {
575 /* Timer drift, dammit */
576 debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
577 i++;
578 lastmin = (lastmin + 1) % 60;
579 call_hook(HOOK_MINUTELY);
580 }
581 if (i > 1)
582 putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
583 miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
584 if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
585 call_hook(HOOK_5MINUTELY);
586 check_botnet_pings();
587 if (!quick_logs) {
588 flushlogs();
589 check_logsize();
590 }
591 if (!miltime) { /* At midnight */
592 char s[25];
593 int j;
594
595 strncpyz(s, ctime(&now), sizeof s);
596 if (quiet_save < 3)
597 putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
598 call_hook(HOOK_BACKUP);
599 for (j = 0; j < max_logs; j++) {
600 if (logs[j].filename != NULL && logs[j].f != NULL) {
601 fclose(logs[j].f);
602 logs[j].f = NULL;
603 }
604 }
605 }
606 }
607 if (nowtm.tm_min == notify_users_at)
608 call_hook(HOOK_HOURLY);
609 /* These no longer need checking since they are all check vs minutely
610 * settings and we only get this far on the minute.
611 */
612 if (miltime == switch_logfiles_at) {
613 call_hook(HOOK_DAILY);
614 if (!keep_all_logs) {
615 if (quiet_save < 3)
616 putlog(LOG_MISC, "*", MISC_LOGSWITCH);
617 for (i = 0; i < max_logs; i++)
618 if (logs[i].filename) {
619 char s[1024];
620
621 if (logs[i].f) {
622 fclose(logs[i].f);
623 logs[i].f = NULL;
624 }
625 egg_snprintf(s, sizeof s, "%s.yesterday", logs[i].filename);
626 unlink(s);
627 movefile(logs[i].filename, s);
628 }
629 }
630 }
631 }
632 }
633
634 static void core_minutely()
635 {
636 check_tcl_time(&nowtm);
637 check_tcl_cron(&nowtm);
638 do_check_timers(&timer);
639 if (quick_logs != 0) {
640 flushlogs();
641 check_logsize();
642 }
643 }
644
645 static void core_hourly()
646 {
647 write_userfile(-1);
648 }
649
650 static void event_rehash()
651 {
652 check_tcl_event("rehash");
653 }
654
655 static void event_prerehash()
656 {
657 check_tcl_event("prerehash");
658 }
659
660 static void event_save()
661 {
662 check_tcl_event("save");
663 }
664
665 static void event_logfile()
666 {
667 check_tcl_event("logfile");
668 }
669
670 static void event_resettraffic()
671 {
672 otraffic_irc += otraffic_irc_today;
673 itraffic_irc += itraffic_irc_today;
674 otraffic_bn += otraffic_bn_today;
675 itraffic_bn += itraffic_bn_today;
676 otraffic_dcc += otraffic_dcc_today;
677 itraffic_dcc += itraffic_dcc_today;
678 otraffic_unknown += otraffic_unknown_today;
679 itraffic_unknown += itraffic_unknown_today;
680 otraffic_trans += otraffic_trans_today;
681 itraffic_trans += itraffic_trans_today;
682 otraffic_irc_today = otraffic_bn_today = 0;
683 otraffic_dcc_today = otraffic_unknown_today = 0;
684 itraffic_irc_today = itraffic_bn_today = 0;
685 itraffic_dcc_today = itraffic_unknown_today = 0;
686 itraffic_trans_today = otraffic_trans_today = 0;
687 }
688
689 static void event_loaded()
690 {
691 check_tcl_event("loaded");
692 }
693
694 void kill_tcl();
695 extern module_entry *module_list;
696 void restart_chons();
697
698 #ifdef STATIC
699 void check_static(char *, char *(*)());
700
701 #include "mod/static.h"
702 #endif
703 int init_threaddata(int);
704 int init_mem();
705 int init_userent();
706 int init_misc();
707 int init_bots();
708 int init_modules();
709 int init_tcl(int, char **);
710 int init_language(int);
711 #ifdef TLS
712 int ssl_init();
713 #endif
714
715 static void patch(const char *str)
716 {
717 char *p = strchr(egg_version, '+');
718
719 if (!p)
720 p = &egg_version[strlen(egg_version)];
721 sprintf(p, "+%s", str);
722 egg_numver++;
723 sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
724 }
725
726 static inline void garbage_collect(void)
727 {
728 static u_8bit_t run_cnt = 0;
729
730 if (run_cnt == 3)
731 garbage_collect_tclhash();
732 else
733 run_cnt++;
734 }
735
736 int mainloop(int toplevel)
737 {
738 static int socket_cleanup = 0;
739 int xx, i, eggbusy = 1, tclbusy = 0;
740 char buf[520];
741
742 /* Lets move some of this here, reducing the numer of actual
743 * calls to periodic_timers
744 */
745 now = time(NULL);
746 /*
747 * FIXME: Get rid of this, it's ugly and wastes lots of cpu.
748 *
749 * pre-1.3.0 Eggdrop had random() in the once a second block below.
750 *
751 * This attempts to keep random() more random by constantly
752 * calling random() and updating the state information.
753 */
754 random(); /* Woop, lets really jumble things */
755
756 /* If we want to restart, we have to unwind to the toplevel.
757 * Tcl will Panic if we kill the interp with Tcl_Eval in progress.
758 * This is done by returning -1 in tickle_WaitForEvent.
759 */
760 if (do_restart && do_restart != -2 && !toplevel)
761 return -1;
762
763 /* Once a second */
764 if (now != then) {
765 call_hook(HOOK_SECONDLY);
766 then = now;
767 }
768
769 /* Only do this every so often. */
770 if (!socket_cleanup) {
771 socket_cleanup = 5;
772
773 /* Remove dead dcc entries. */
774 dcc_remove_lost();
775
776 /* Check for server or dcc activity. */
777 dequeue_sockets();
778 } else
779 socket_cleanup--;
780
781 /* Free unused structures. */
782 garbage_collect();
783
784 xx = sockgets(buf, &i);
785 if (xx >= 0) { /* Non-error */
786 int idx;
787
788 for (idx = 0; idx < dcc_total; idx++)
789 if (dcc[idx].sock == xx) {
790 if (dcc[idx].type && dcc[idx].type->activity) {
791 /* Traffic stats */
792 if (dcc[idx].type->name) {
793 if (!strncmp(dcc[idx].type->name, "BOT", 3))
794 itraffic_bn_today += strlen(buf) + 1;
795 else if (!strcmp(dcc[idx].type->name, "SERVER"))
796 itraffic_irc_today += strlen(buf) + 1;
797 else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
798 itraffic_dcc_today += strlen(buf) + 1;
799 else if (!strncmp(dcc[idx].type->name, "FILES", 5))
800 itraffic_dcc_today += strlen(buf) + 1;
801 else if (!strcmp(dcc[idx].type->name, "SEND"))
802 itraffic_trans_today += strlen(buf) + 1;
803 else if (!strncmp(dcc[idx].type->name, "GET", 3))
804 itraffic_trans_today += strlen(buf) + 1;
805 else
806 itraffic_unknown_today += strlen(buf) + 1;
807 }
808 dcc[idx].type->activity(idx, buf, i);
809 } else
810 putlog(LOG_MISC, "*",
811 "!!! untrapped dcc activity: type %s, sock %d",
812 dcc[idx].type->name, dcc[idx].sock);
813 break;
814 }
815 } else if (xx == -1) { /* EOF from someone */
816 int idx;
817
818 if (i == STDOUT && !backgrd)
819 fatal("END OF FILE ON TERMINAL", 0);
820 for (idx = 0; idx < dcc_total; idx++)
821 if (dcc[idx].sock == i) {
822 if (dcc[idx].type && dcc[idx].type->eof)
823 dcc[idx].type->eof(idx);
824 else {
825 putlog(LOG_MISC, "*",
826 "*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
827 i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
828 killsock(i);
829 lostdcc(idx);
830 }
831 idx = dcc_total + 1;
832 }
833 if (idx == dcc_total) {
834 putlog(LOG_MISC, "*",
835 "(@) EOF socket %d, not a dcc socket, not anything.", i);
836 close(i);
837 killsock(i);
838 }
839 } else if (xx == -2 && errno != EINTR) { /* select() error */
840 putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
841 for (i = 0; i < dcc_total; i++) {
842 if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno == EBADF)) {
843 putlog(LOG_MISC, "*",
844 "DCC socket %d (type %d, name '%s') expired -- pfft",
845 dcc[i].sock, dcc[i].type, dcc[i].nick);
846 killsock(dcc[i].sock);
847 lostdcc(i);
848 i--;
849 }
850 }
851 } else if (xx == -3) {
852 call_hook(HOOK_IDLE);
853 socket_cleanup = 0; /* If we've been idle, cleanup & flush */
854 eggbusy = 0;
855 } else if (xx == -5) {
856 eggbusy = 0;
857 tclbusy = 1;
858 }
859
860 if (do_restart) {
861 if (do_restart == -2)
862 rehash();
863 else if (!toplevel)
864 return -1; /* Unwind to toplevel before restarting */
865 else {
866 /* Unload as many modules as possible */
867 int f = 1;
868 module_entry *p;
869 Function startfunc;
870 char name[256];
871
872 /* oops, I guess we should call this event before tcl is restarted */
873 check_tcl_event("prerestart");
874
875 while (f) {
876 f = 0;
877 for (p = module_list; p != NULL; p = p->next) {
878 dependancy *d = dependancy_list;
879 int ok = 1;
880
881 while (ok && d) {
882 if (d->needed == p)
883 ok = 0;
884 d = d->next;
885 }
886 if (ok) {
887 strcpy(name, p->name);
888 if (module_unload(name, botnetnick) == NULL) {
889 f = 1;
890 break;
891 }
892 }
893 }
894 }
895
896 /* Make sure we don't have any modules left hanging around other than
897 * "eggdrop" and the two that are supposed to be.
898 */
899 for (f = 0, p = module_list; p; p = p->next) {
900 if (strcmp(p->name, "eggdrop") && strcmp(p->name, "encryption") &&
901 strcmp(p->name, "uptime")) {
902 f++;
903 }
904 }
905 if (f != 0) {
906 putlog(LOG_MISC, "*", MOD_STAGNANT);
907 }
908
909 flushlogs();
910 kill_tcl();
911 init_tcl(argc, argv);
912 init_language(0);
913
914 /* this resets our modules which we didn't unload (encryption and uptime) */
915 for (p = module_list; p; p = p->next) {
916 if (p->funcs) {
917 startfunc = p->funcs[MODCALL_START];
918 startfunc(NULL);
919 }
920 }
921
922 rehash();
923 #ifdef TLS
924 ssl_cleanup();
925 ssl_init();
926 #endif
927 restart_chons();
928 call_hook(HOOK_LOADED);
929 }
930 eggbusy = 1;
931 do_restart = 0;
932 }
933
934 #ifdef USE_TCL_EVENTS
935 if (!eggbusy) {
936 /* Process all pending tcl events */
937 # ifdef REPLACE_NOTIFIER
938 if (Tcl_ServiceAll())
939 tclbusy = 1;
940 # else
941 while (Tcl_DoOneEvent(TCL_DONT_WAIT | TCL_ALL_EVENTS))
942 tclbusy = 1;
943 # endif /* REPLACE_NOTIFIER */
944 #endif /* USE_TCL_EVENTS */
945 }
946
947 return (eggbusy || tclbusy);
948 }
949
950 int main(int arg_c, char **arg_v)
951 {
952 int i, xx;
953 char s[25];
954 FILE *f;
955 struct sigaction sv;
956 struct chanset_t *chan;
957 #ifdef DEBUG
958 struct rlimit cdlim;
959 #endif
960 #ifdef STOP_UAC
961 int nvpair[2];
962 #endif
963
964 /* Make sure it can write core, if you make debug. Else it's pretty
965 * useless (dw)
966 *
967 * Only allow unlimited size core files when compiled with DEBUG defined.
968 * This is not a good idea for normal builds -- in these cases, use the
969 * default system resource limits instead.
970 */
971 #ifdef DEBUG
972 cdlim.rlim_cur = RLIM_INFINITY;
973 cdlim.rlim_max = RLIM_INFINITY;
974 setrlimit(RLIMIT_CORE, &cdlim);
975 #endif
976
977 #ifdef DEBUG_CONTEXT
978 /* Initialise context list */
979 for (i = 0; i < 16; i++)
980 Context;
981 #endif
982
983 /* Include patch.h header for patch("...") */
984 #include "patch.h"
985
986 argc = arg_c;
987 argv = arg_v;
988
989 /* Version info! */
990 egg_snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
991 egg_snprintf(version, sizeof version,
992 "Eggdrop v%s (C) 1997 Robey Pointer (C) 2010 Eggheads",
993 egg_version);
994 /* Now add on the patchlevel (for Tcl) */
995 sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
996 strcat(egg_version, egg_xtra);
997
998 /* For OSF/1 */
999 #ifdef STOP_UAC
1000 /* Don't print "unaligned access fixup" warning to the user */
1001 nvpair[0] = SSIN_UACPROC;
1002 nvpair[1] = UAC_NOPRINT;
1003 setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
1004 #endif
1005
1006 /* Set up error traps: */
1007 sv.sa_handler = got_bus;
1008 sigemptyset(&sv.sa_mask);
1009 #ifdef SA_RESETHAND
1010 sv.sa_flags = SA_RESETHAND;
1011 #else
1012 sv.sa_flags = 0;
1013 #endif
1014 sigaction(SIGBUS, &sv, NULL);
1015 sv.sa_handler = got_segv;
1016 sigaction(SIGSEGV, &sv, NULL);
1017 #ifdef SA_RESETHAND
1018 sv.sa_flags = 0;
1019 #endif
1020 sv.sa_handler = got_fpe;
1021 sigaction(SIGFPE, &sv, NULL);
1022 sv.sa_handler = got_term;
1023 sigaction(SIGTERM, &sv, NULL);
1024 sv.sa_handler = got_hup;
1025 sigaction(SIGHUP, &sv, NULL);
1026 sv.sa_handler = got_quit;
1027 sigaction(SIGQUIT, &sv, NULL);
1028 sv.sa_handler = SIG_IGN;
1029 sigaction(SIGPIPE, &sv, NULL);
1030 sv.sa_handler = got_ill;
1031 sigaction(SIGILL, &sv, NULL);
1032 sv.sa_handler = got_alarm;
1033 sigaction(SIGALRM, &sv, NULL);
1034
1035 /* Initialize variables and stuff */
1036 now = time(NULL);
1037 chanset = NULL;
1038 egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
1039 lastmin = nowtm.tm_min;
1040 srandom((unsigned int) (now % (getpid() + getppid())));
1041 init_mem();
1042 init_language(1);
1043 if (argc > 1)
1044 for (i = 1; i < argc; i++)
1045 do_arg(argv[i]);
1046
1047 printf("\n%s\n", version);
1048
1049 #ifndef CYGWIN_HACKS
1050 /* Don't allow eggdrop to run as root
1051 * This check isn't useful under cygwin and has been
1052 * reported to cause trouble in some situations.
1053 */
1054 if (((int) getuid() == 0) || ((int) geteuid() == 0))
1055 fatal("ERROR: Eggdrop will not run as root!", 0);
1056 #endif
1057
1058 #ifndef REPLACE_NOTIFIER
1059 init_threaddata(1);
1060 #endif
1061 init_userent();
1062 init_misc();
1063 init_bots();
1064 init_modules();
1065 if (backgrd)
1066 bg_prepare_split();
1067 init_tcl(argc, argv);
1068 init_language(0);
1069 #ifdef STATIC
1070 link_statics();
1071 #endif
1072 strncpyz(s, ctime(&now), sizeof s);
1073 strcpy(&s[11], &s[20]);
1074 putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
1075 chanprog();
1076 if (!encrypt_pass) {
1077 printf(MOD_NOCRYPT);
1078 bg_send_quit(BG_ABORT);
1079 exit(1);
1080 }
1081 i = 0;
1082 for (chan = chanset; chan; chan = chan->next)
1083 i++;
1084 putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
1085 botnetnick, i, count_users(userlist));
1086 #ifdef TLS
1087 ssl_init();
1088 #endif
1089 cache_miss = 0;
1090 cache_hit = 0;
1091 if (!pid_file[0])
1092 egg_snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
1093
1094 /* Check for pre-existing eggdrop! */
1095 f = fopen(pid_file, "r");
1096 if (f != NULL) {
1097 fgets(s, 10, f);
1098 xx = atoi(s);
1099 i = kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
1100 * is used */
1101 if (i == 0 || errno != ESRCH) {
1102 printf(EGG_RUNNING1, botnetnick);
1103 printf(EGG_RUNNING2, pid_file);
1104 bg_send_quit(BG_ABORT);
1105 exit(1);
1106 }
1107 }
1108
1109 /* Move into background? */
1110 if (backgrd) {
1111 bg_do_split();
1112 } else { /* !backgrd */
1113 xx = getpid();
1114 if (xx != 0) {
1115 FILE *fp;
1116
1117 /* Write pid to file */
1118 unlink(pid_file);
1119 fp = fopen(pid_file, "w");
1120 if (fp != NULL) {
1121 fprintf(fp, "%u\n", xx);
1122 if (fflush(fp)) {
1123 /* Let the bot live since this doesn't appear to be a botchk */
1124 printf(EGG_NOWRITE, pid_file);
1125 fclose(fp);
1126 unlink(pid_file);
1127 } else
1128 fclose(fp);
1129 } else
1130 printf(EGG_NOWRITE, pid_file);
1131 }
1132 }
1133
1134 use_stderr = 0; /* Stop writing to stderr now */
1135 if (backgrd) {
1136 /* Ok, try to disassociate from controlling terminal (finger cross) */
1137 #ifdef HAVE_SETPGID
1138 setpgid(0, 0);
1139 #endif
1140 /* Tcl wants the stdin, stdout and stderr file handles kept open. */
1141 freopen("/dev/null", "r", stdin);
1142 freopen("/dev/null", "w", stdout);
1143 freopen("/dev/null", "w", stderr);
1144 #ifdef CYGWIN_HACKS
1145 FreeConsole();
1146 #endif
1147 }
1148
1149 /* Terminal emulating dcc chat */
1150 if (!backgrd && term_z) {
1151 int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
1152
1153 getvhost(&dcc[n].sockname, AF_INET);
1154 dcc[n].sock = STDOUT;
1155 dcc[n].timeval = now;
1156 dcc[n].u.chat->con_flags = conmask;
1157 dcc[n].u.chat->strip_flags = STRIP_ALL;
1158 dcc[n].status = STAT_ECHO;
1159 strcpy(dcc[n].nick, "HQ");
1160 strcpy(dcc[n].host, "llama@console");
1161 /* HACK: Workaround not to pass literal "HQ" as a non-const arg */
1162 dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
1163 /* Make sure there's an innocuous HQ user if needed */
1164 if (!dcc[n].user) {
1165 userlist = adduser(userlist, dcc[n].nick, "none", "-", USER_PARTY);
1166 dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
1167 }
1168 setsock(STDOUT, 0); /* Entry in net table */
1169 dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
1170 dcc_chatter(n);
1171 }
1172
1173 then = now;
1174 online_since = now;
1175 autolink_cycle(NULL); /* Hurry and connect to tandem bots */
1176 add_help_reference("cmds1.help");
1177 add_help_reference("cmds2.help");
1178 add_help_reference("core.help");
1179 add_hook(HOOK_SECONDLY, (Function) core_secondly);
1180 add_hook(HOOK_MINUTELY, (Function) core_minutely);
1181 add_hook(HOOK_HOURLY, (Function) core_hourly);
1182 add_hook(HOOK_REHASH, (Function) event_rehash);
1183 add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
1184 add_hook(HOOK_USERFILE, (Function) event_save);
1185 add_hook(HOOK_BACKUP, (Function) backup_userfile);
1186 add_hook(HOOK_DAILY, (Function) event_logfile);
1187 add_hook(HOOK_DAILY, (Function) event_resettraffic);
1188 add_hook(HOOK_LOADED, (Function) event_loaded);
1189
1190 call_hook(HOOK_LOADED);
1191
1192 debug0("main: entering loop");
1193 while (1) {
1194 mainloop(1);
1195 }
1196 }

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