/[cvs]/eggdrop1.8/src/main.c
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Revision 1.5 - (hide annotations) (download) (as text)
Tue Oct 19 14:20:56 2010 UTC (8 years, 8 months ago) by pseudo
Branch: MAIN
Changes since 1.4: +10 -1 lines
File MIME type: text/x-chdr
Added few autoconf checks for ssl.
Added tls to tcl_status()

1 simple 1.1 /*
2     * main.c -- handles:
3     * core event handling
4     * signal handling
5     * command line arguments
6     * context and assert debugging
7     *
8 pseudo 1.5 * $Id: main.c,v 1.4 2010/10/19 12:13:33 pseudo Exp $
9 simple 1.1 */
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 pseudo 1.4 #ifdef TLS
168     int ssl_cleanup();
169     #endif
170 simple 1.1
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 pseudo 1.4 #ifdef TLS
181     ssl_cleanup();
182     #endif
183 simple 1.1 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 pseudo 1.4 int expmem_dns();
203     #ifdef TLS
204     int expmem_tls();
205     #endif
206 simple 1.1
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 pseudo 1.4 expmem_tclmisc() + expmem_dns();
217     #ifdef TLS
218     tot += expmem_tls();
219     #endif
220 simple 1.1 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 pseudo 1.3 #ifdef IPV6
311     dprintf(-x, "Compiled with IPv6 support\n");
312     #else
313     dprintf(-x, "Compiled without IPv6 support\n");
314     #endif
315 simple 1.1
316 pseudo 1.5 #ifdef TLS
317     dprintf(-x, "Compiled with TLS support\n");
318     #else
319     dprintf(-x, "Compiled without TLS support\n");
320     #endif
321    
322 pseudo 1.3 dprintf(-x, "Configure flags: %s\n", EGG_AC_ARGS);
323 simple 1.1 #ifdef CCFLAGS
324     dprintf(-x, "Compile flags: %s\n", CCFLAGS);
325     #endif
326    
327     #ifdef LDFLAGS
328     dprintf(-x, "Link flags: %s\n", LDFLAGS);
329     #endif
330    
331     #ifdef STRIPFLAGS
332     dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
333     #endif
334    
335     dprintf(-x, "Context: ");
336     cx_ptr = cx_ptr & 15;
337     for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
338     dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
339     (cx_note[y][0]) ? cx_note[y] : "");
340     dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
341     (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
342     tell_dcc(-x);
343     dprintf(-x, "\n");
344     debug_mem_to_dcc(-x);
345     killsock(x);
346     close(x);
347     putlog(LOG_MISC, "*", "* Wrote DEBUG");
348     }
349     }
350     #endif /* DEBUG_CONTEXT */
351    
352     static void got_bus(int z)
353     {
354     write_debug();
355     fatal("BUS ERROR -- CRASHING!", 1);
356     #ifdef SA_RESETHAND
357     kill(getpid(), SIGBUS);
358     #else
359     bg_send_quit(BG_ABORT);
360     exit(1);
361     #endif
362     }
363    
364     static void got_segv(int z)
365     {
366     write_debug();
367     fatal("SEGMENT VIOLATION -- CRASHING!", 1);
368     #ifdef SA_RESETHAND
369     kill(getpid(), SIGSEGV);
370     #else
371     bg_send_quit(BG_ABORT);
372     exit(1);
373     #endif
374     }
375    
376     static void got_fpe(int z)
377     {
378     write_debug();
379     fatal("FLOATING POINT ERROR -- CRASHING!", 0);
380     }
381    
382     static void got_term(int z)
383     {
384     write_userfile(-1);
385     check_tcl_event("sigterm");
386     if (die_on_sigterm) {
387     botnet_send_chat(-1, botnetnick, "ACK, I've been terminated!");
388     fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
389     } else
390     putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
391     }
392    
393     static void got_quit(int z)
394     {
395     check_tcl_event("sigquit");
396     putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
397     return;
398     }
399    
400     static void got_hup(int z)
401     {
402     write_userfile(-1);
403     check_tcl_event("sighup");
404     if (die_on_sighup) {
405     fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
406     } else
407     putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
408     do_restart = -2;
409     return;
410     }
411    
412     /* A call to resolver (gethostbyname, etc) timed out
413     */
414     static void got_alarm(int z)
415     {
416     siglongjmp(alarmret, 1);
417    
418     /* -Never reached- */
419     }
420    
421     /* Got ILL signal -- log context and continue
422     */
423     static void got_ill(int z)
424     {
425     check_tcl_event("sigill");
426     #ifdef DEBUG_CONTEXT
427     putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
428     cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
429     #endif
430     }
431    
432     #ifdef DEBUG_CONTEXT
433     /* Called from the Context macro.
434     */
435     void eggContext(const char *file, int line, const char *module)
436     {
437     char x[31], *p;
438    
439     p = strrchr(file, '/');
440     if (!module) {
441     strncpyz(x, p ? p + 1 : file, sizeof x);
442     } else
443     egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
444     cx_ptr = ((cx_ptr + 1) & 15);
445     strcpy(cx_file[cx_ptr], x);
446     cx_line[cx_ptr] = line;
447     cx_note[cx_ptr][0] = 0;
448     }
449    
450     /* Called from the ContextNote macro.
451     */
452     void eggContextNote(const char *file, int line, const char *module,
453     const char *note)
454     {
455     char x[31], *p;
456    
457     p = strrchr(file, '/');
458     if (!module)
459     strncpyz(x, p ? p + 1 : file, sizeof x);
460     else
461     egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
462     cx_ptr = ((cx_ptr + 1) & 15);
463     strcpy(cx_file[cx_ptr], x);
464     cx_line[cx_ptr] = line;
465     strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
466     }
467     #endif /* DEBUG_CONTEXT */
468    
469     #ifdef DEBUG_ASSERT
470     /* Called from the Assert macro.
471     */
472     void eggAssert(const char *file, int line, const char *module)
473     {
474     write_debug();
475     if (!module)
476     putlog(LOG_MISC, "*", "* In file %s, line %u", file, line);
477     else
478     putlog(LOG_MISC, "*", "* In file %s:%s, line %u", module, file, line);
479     fatal("ASSERT FAILED -- CRASHING!", 1);
480     }
481     #endif
482    
483     static void do_arg(char *s)
484     {
485     char x[512], *z = x;
486     int i;
487    
488     if (s[0] == '-')
489     for (i = 1; i < strlen(s); i++) {
490     switch (s[i]) {
491     case 'n':
492     backgrd = 0;
493     break;
494     case 'c':
495     con_chan = 1;
496     term_z = 0;
497     break;
498     case 't':
499     con_chan = 0;
500     term_z = 1;
501     break;
502     case 'm':
503     make_userfile = 1;
504     break;
505     case 'v':
506     strncpyz(x, egg_version, sizeof x);
507     newsplit(&z);
508     newsplit(&z);
509     printf("%s\n", version);
510     if (z[0])
511     printf(" (patches: %s)\n", z);
512 pseudo 1.3 printf("Configured with: " EGG_AC_ARGS "\n");
513     printf("Compiled with: ");
514     #ifdef IPV6
515     printf("IPv6, ");
516     #endif
517 pseudo 1.5 #ifdef TLS
518     printf("TLS, ");
519     #endif
520 pseudo 1.3 printf("handlen=%d\n", HANDLEN);
521 simple 1.1 bg_send_quit(BG_ABORT);
522     exit(0);
523     break; /* this should never be reached */
524     case 'h':
525     printf("\n%s\n\n", version);
526     printf(EGG_USAGE);
527     printf("\n");
528     bg_send_quit(BG_ABORT);
529     exit(0);
530     break; /* this should never be reached */
531     }
532     } else
533     strncpyz(configfile, s, sizeof configfile);
534     }
535    
536     void backup_userfile(void)
537     {
538     char s[125];
539    
540     if (quiet_save < 2)
541     putlog(LOG_MISC, "*", USERF_BACKUP);
542     egg_snprintf(s, sizeof s, "%s~bak", userfile);
543     copyfile(userfile, s);
544     }
545    
546     /* Timer info */
547     static int lastmin = 99;
548     static time_t then;
549     static struct tm nowtm;
550    
551     /* Called once a second.
552     *
553     * Note: Try to not put any Context lines in here (guppy 21Mar2000).
554     */
555     static void core_secondly()
556     {
557     static int cnt = 0;
558     int miltime;
559    
560     do_check_timers(&utimer); /* Secondly timers */
561     cnt++;
562     if (cnt >= 10) { /* Every 10 seconds */
563     cnt = 0;
564     check_expired_dcc();
565     if (con_chan && !backgrd) {
566     dprintf(DP_STDOUT, "\033[2J\033[1;1H");
567     tell_verbose_status(DP_STDOUT);
568     do_module_report(DP_STDOUT, 0, "server");
569     do_module_report(DP_STDOUT, 0, "channels");
570     tell_mem_status_dcc(DP_STDOUT);
571     }
572     }
573     egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
574     if (nowtm.tm_min != lastmin) {
575     int i = 0;
576    
577     /* Once a minute */
578     lastmin = (lastmin + 1) % 60;
579     call_hook(HOOK_MINUTELY);
580     check_expired_ignores();
581     autolink_cycle(NULL); /* Attempt autolinks */
582     /* In case for some reason more than 1 min has passed: */
583     while (nowtm.tm_min != lastmin) {
584     /* Timer drift, dammit */
585     debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
586     i++;
587     lastmin = (lastmin + 1) % 60;
588     call_hook(HOOK_MINUTELY);
589     }
590     if (i > 1)
591     putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
592     miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
593     if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
594     call_hook(HOOK_5MINUTELY);
595     check_botnet_pings();
596     if (!quick_logs) {
597     flushlogs();
598     check_logsize();
599     }
600     if (!miltime) { /* At midnight */
601     char s[25];
602     int j;
603    
604     strncpyz(s, ctime(&now), sizeof s);
605     if (quiet_save < 3)
606     putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
607     call_hook(HOOK_BACKUP);
608     for (j = 0; j < max_logs; j++) {
609     if (logs[j].filename != NULL && logs[j].f != NULL) {
610     fclose(logs[j].f);
611     logs[j].f = NULL;
612     }
613     }
614     }
615     }
616     if (nowtm.tm_min == notify_users_at)
617     call_hook(HOOK_HOURLY);
618     /* These no longer need checking since they are all check vs minutely
619     * settings and we only get this far on the minute.
620     */
621     if (miltime == switch_logfiles_at) {
622     call_hook(HOOK_DAILY);
623     if (!keep_all_logs) {
624     if (quiet_save < 3)
625     putlog(LOG_MISC, "*", MISC_LOGSWITCH);
626     for (i = 0; i < max_logs; i++)
627     if (logs[i].filename) {
628     char s[1024];
629    
630     if (logs[i].f) {
631     fclose(logs[i].f);
632     logs[i].f = NULL;
633     }
634     egg_snprintf(s, sizeof s, "%s.yesterday", logs[i].filename);
635     unlink(s);
636     movefile(logs[i].filename, s);
637     }
638     }
639     }
640     }
641     }
642    
643     static void core_minutely()
644     {
645     check_tcl_time(&nowtm);
646     check_tcl_cron(&nowtm);
647     do_check_timers(&timer);
648     if (quick_logs != 0) {
649     flushlogs();
650     check_logsize();
651     }
652     }
653    
654     static void core_hourly()
655     {
656     write_userfile(-1);
657     }
658    
659     static void event_rehash()
660     {
661     check_tcl_event("rehash");
662     }
663    
664     static void event_prerehash()
665     {
666     check_tcl_event("prerehash");
667     }
668    
669     static void event_save()
670     {
671     check_tcl_event("save");
672     }
673    
674     static void event_logfile()
675     {
676     check_tcl_event("logfile");
677     }
678    
679     static void event_resettraffic()
680     {
681     otraffic_irc += otraffic_irc_today;
682     itraffic_irc += itraffic_irc_today;
683     otraffic_bn += otraffic_bn_today;
684     itraffic_bn += itraffic_bn_today;
685     otraffic_dcc += otraffic_dcc_today;
686     itraffic_dcc += itraffic_dcc_today;
687     otraffic_unknown += otraffic_unknown_today;
688     itraffic_unknown += itraffic_unknown_today;
689     otraffic_trans += otraffic_trans_today;
690     itraffic_trans += itraffic_trans_today;
691     otraffic_irc_today = otraffic_bn_today = 0;
692     otraffic_dcc_today = otraffic_unknown_today = 0;
693     itraffic_irc_today = itraffic_bn_today = 0;
694     itraffic_dcc_today = itraffic_unknown_today = 0;
695     itraffic_trans_today = otraffic_trans_today = 0;
696     }
697    
698     static void event_loaded()
699     {
700     check_tcl_event("loaded");
701     }
702    
703     void kill_tcl();
704     extern module_entry *module_list;
705     void restart_chons();
706    
707     #ifdef STATIC
708     void check_static(char *, char *(*)());
709    
710     #include "mod/static.h"
711     #endif
712     int init_threaddata(int);
713     int init_mem();
714     int init_userent();
715     int init_misc();
716     int init_bots();
717     int init_modules();
718     int init_tcl(int, char **);
719     int init_language(int);
720 pseudo 1.4 #ifdef TLS
721     int ssl_init();
722     #endif
723 simple 1.1
724     static void patch(const char *str)
725     {
726     char *p = strchr(egg_version, '+');
727    
728     if (!p)
729     p = &egg_version[strlen(egg_version)];
730     sprintf(p, "+%s", str);
731     egg_numver++;
732     sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
733     }
734    
735     static inline void garbage_collect(void)
736     {
737     static u_8bit_t run_cnt = 0;
738    
739     if (run_cnt == 3)
740     garbage_collect_tclhash();
741     else
742     run_cnt++;
743     }
744    
745     int mainloop(int toplevel)
746     {
747     static int socket_cleanup = 0;
748     int xx, i, eggbusy = 1, tclbusy = 0;
749     char buf[520];
750    
751     /* Lets move some of this here, reducing the numer of actual
752     * calls to periodic_timers
753     */
754     now = time(NULL);
755     /*
756     * FIXME: Get rid of this, it's ugly and wastes lots of cpu.
757     *
758     * pre-1.3.0 Eggdrop had random() in the once a second block below.
759     *
760     * This attempts to keep random() more random by constantly
761     * calling random() and updating the state information.
762     */
763     random(); /* Woop, lets really jumble things */
764    
765     /* If we want to restart, we have to unwind to the toplevel.
766     * Tcl will Panic if we kill the interp with Tcl_Eval in progress.
767     * This is done by returning -1 in tickle_WaitForEvent.
768     */
769     if (do_restart && do_restart != -2 && !toplevel)
770     return -1;
771    
772     /* Once a second */
773     if (now != then) {
774     call_hook(HOOK_SECONDLY);
775     then = now;
776     }
777    
778     /* Only do this every so often. */
779     if (!socket_cleanup) {
780     socket_cleanup = 5;
781    
782     /* Remove dead dcc entries. */
783     dcc_remove_lost();
784    
785     /* Check for server or dcc activity. */
786     dequeue_sockets();
787     } else
788     socket_cleanup--;
789    
790     /* Free unused structures. */
791     garbage_collect();
792    
793     xx = sockgets(buf, &i);
794     if (xx >= 0) { /* Non-error */
795     int idx;
796    
797     for (idx = 0; idx < dcc_total; idx++)
798     if (dcc[idx].sock == xx) {
799     if (dcc[idx].type && dcc[idx].type->activity) {
800     /* Traffic stats */
801     if (dcc[idx].type->name) {
802     if (!strncmp(dcc[idx].type->name, "BOT", 3))
803     itraffic_bn_today += strlen(buf) + 1;
804     else if (!strcmp(dcc[idx].type->name, "SERVER"))
805     itraffic_irc_today += strlen(buf) + 1;
806     else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
807     itraffic_dcc_today += strlen(buf) + 1;
808     else if (!strncmp(dcc[idx].type->name, "FILES", 5))
809     itraffic_dcc_today += strlen(buf) + 1;
810     else if (!strcmp(dcc[idx].type->name, "SEND"))
811     itraffic_trans_today += strlen(buf) + 1;
812     else if (!strncmp(dcc[idx].type->name, "GET", 3))
813     itraffic_trans_today += strlen(buf) + 1;
814     else
815     itraffic_unknown_today += strlen(buf) + 1;
816     }
817     dcc[idx].type->activity(idx, buf, i);
818     } else
819     putlog(LOG_MISC, "*",
820     "!!! untrapped dcc activity: type %s, sock %d",
821     dcc[idx].type->name, dcc[idx].sock);
822     break;
823     }
824     } else if (xx == -1) { /* EOF from someone */
825     int idx;
826    
827     if (i == STDOUT && !backgrd)
828     fatal("END OF FILE ON TERMINAL", 0);
829     for (idx = 0; idx < dcc_total; idx++)
830     if (dcc[idx].sock == i) {
831     if (dcc[idx].type && dcc[idx].type->eof)
832     dcc[idx].type->eof(idx);
833     else {
834     putlog(LOG_MISC, "*",
835     "*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
836     i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
837     killsock(i);
838     lostdcc(idx);
839     }
840     idx = dcc_total + 1;
841     }
842     if (idx == dcc_total) {
843     putlog(LOG_MISC, "*",
844     "(@) EOF socket %d, not a dcc socket, not anything.", i);
845     close(i);
846     killsock(i);
847     }
848     } else if (xx == -2 && errno != EINTR) { /* select() error */
849     putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
850     for (i = 0; i < dcc_total; i++) {
851     if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno == EBADF)) {
852     putlog(LOG_MISC, "*",
853     "DCC socket %d (type %d, name '%s') expired -- pfft",
854     dcc[i].sock, dcc[i].type, dcc[i].nick);
855     killsock(dcc[i].sock);
856     lostdcc(i);
857     i--;
858     }
859     }
860     } else if (xx == -3) {
861     call_hook(HOOK_IDLE);
862     socket_cleanup = 0; /* If we've been idle, cleanup & flush */
863     eggbusy = 0;
864     } else if (xx == -5) {
865     eggbusy = 0;
866     tclbusy = 1;
867     }
868    
869     if (do_restart) {
870     if (do_restart == -2)
871     rehash();
872     else if (!toplevel)
873     return -1; /* Unwind to toplevel before restarting */
874     else {
875     /* Unload as many modules as possible */
876     int f = 1;
877     module_entry *p;
878     Function startfunc;
879     char name[256];
880    
881     /* oops, I guess we should call this event before tcl is restarted */
882     check_tcl_event("prerestart");
883    
884     while (f) {
885     f = 0;
886     for (p = module_list; p != NULL; p = p->next) {
887     dependancy *d = dependancy_list;
888     int ok = 1;
889    
890     while (ok && d) {
891     if (d->needed == p)
892     ok = 0;
893     d = d->next;
894     }
895     if (ok) {
896     strcpy(name, p->name);
897     if (module_unload(name, botnetnick) == NULL) {
898     f = 1;
899     break;
900     }
901     }
902     }
903     }
904    
905     /* Make sure we don't have any modules left hanging around other than
906     * "eggdrop" and the two that are supposed to be.
907     */
908     for (f = 0, p = module_list; p; p = p->next) {
909     if (strcmp(p->name, "eggdrop") && strcmp(p->name, "encryption") &&
910     strcmp(p->name, "uptime")) {
911     f++;
912     }
913     }
914     if (f != 0) {
915     putlog(LOG_MISC, "*", MOD_STAGNANT);
916     }
917    
918     flushlogs();
919     kill_tcl();
920     init_tcl(argc, argv);
921     init_language(0);
922    
923     /* this resets our modules which we didn't unload (encryption and uptime) */
924     for (p = module_list; p; p = p->next) {
925     if (p->funcs) {
926     startfunc = p->funcs[MODCALL_START];
927     startfunc(NULL);
928     }
929     }
930    
931     rehash();
932 pseudo 1.4 #ifdef TLS
933     ssl_cleanup();
934     ssl_init();
935     #endif
936 simple 1.1 restart_chons();
937     call_hook(HOOK_LOADED);
938     }
939     eggbusy = 1;
940     do_restart = 0;
941     }
942    
943     #ifdef USE_TCL_EVENTS
944     if (!eggbusy) {
945     /* Process all pending tcl events */
946     # ifdef REPLACE_NOTIFIER
947     if (Tcl_ServiceAll())
948     tclbusy = 1;
949     # else
950     while (Tcl_DoOneEvent(TCL_DONT_WAIT | TCL_ALL_EVENTS))
951     tclbusy = 1;
952     # endif /* REPLACE_NOTIFIER */
953     #endif /* USE_TCL_EVENTS */
954     }
955    
956     return (eggbusy || tclbusy);
957     }
958    
959     int main(int arg_c, char **arg_v)
960     {
961     int i, xx;
962     char s[25];
963     FILE *f;
964     struct sigaction sv;
965     struct chanset_t *chan;
966     #ifdef DEBUG
967     struct rlimit cdlim;
968     #endif
969     #ifdef STOP_UAC
970     int nvpair[2];
971     #endif
972    
973     /* Make sure it can write core, if you make debug. Else it's pretty
974     * useless (dw)
975     *
976     * Only allow unlimited size core files when compiled with DEBUG defined.
977     * This is not a good idea for normal builds -- in these cases, use the
978     * default system resource limits instead.
979     */
980     #ifdef DEBUG
981     cdlim.rlim_cur = RLIM_INFINITY;
982     cdlim.rlim_max = RLIM_INFINITY;
983     setrlimit(RLIMIT_CORE, &cdlim);
984     #endif
985    
986     #ifdef DEBUG_CONTEXT
987     /* Initialise context list */
988     for (i = 0; i < 16; i++)
989     Context;
990     #endif
991    
992     /* Include patch.h header for patch("...") */
993     #include "patch.h"
994    
995     argc = arg_c;
996     argv = arg_v;
997    
998     /* Version info! */
999     egg_snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
1000     egg_snprintf(version, sizeof version,
1001     "Eggdrop v%s (C) 1997 Robey Pointer (C) 2010 Eggheads",
1002     egg_version);
1003     /* Now add on the patchlevel (for Tcl) */
1004     sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
1005     strcat(egg_version, egg_xtra);
1006    
1007     /* For OSF/1 */
1008     #ifdef STOP_UAC
1009     /* Don't print "unaligned access fixup" warning to the user */
1010     nvpair[0] = SSIN_UACPROC;
1011     nvpair[1] = UAC_NOPRINT;
1012     setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
1013     #endif
1014    
1015     /* Set up error traps: */
1016     sv.sa_handler = got_bus;
1017     sigemptyset(&sv.sa_mask);
1018     #ifdef SA_RESETHAND
1019     sv.sa_flags = SA_RESETHAND;
1020     #else
1021     sv.sa_flags = 0;
1022     #endif
1023     sigaction(SIGBUS, &sv, NULL);
1024     sv.sa_handler = got_segv;
1025     sigaction(SIGSEGV, &sv, NULL);
1026     #ifdef SA_RESETHAND
1027     sv.sa_flags = 0;
1028     #endif
1029     sv.sa_handler = got_fpe;
1030     sigaction(SIGFPE, &sv, NULL);
1031     sv.sa_handler = got_term;
1032     sigaction(SIGTERM, &sv, NULL);
1033     sv.sa_handler = got_hup;
1034     sigaction(SIGHUP, &sv, NULL);
1035     sv.sa_handler = got_quit;
1036     sigaction(SIGQUIT, &sv, NULL);
1037     sv.sa_handler = SIG_IGN;
1038     sigaction(SIGPIPE, &sv, NULL);
1039     sv.sa_handler = got_ill;
1040     sigaction(SIGILL, &sv, NULL);
1041     sv.sa_handler = got_alarm;
1042     sigaction(SIGALRM, &sv, NULL);
1043    
1044     /* Initialize variables and stuff */
1045     now = time(NULL);
1046     chanset = NULL;
1047     egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
1048     lastmin = nowtm.tm_min;
1049     srandom((unsigned int) (now % (getpid() + getppid())));
1050     init_mem();
1051     init_language(1);
1052     if (argc > 1)
1053     for (i = 1; i < argc; i++)
1054     do_arg(argv[i]);
1055    
1056     printf("\n%s\n", version);
1057    
1058     #ifndef CYGWIN_HACKS
1059     /* Don't allow eggdrop to run as root
1060     * This check isn't useful under cygwin and has been
1061     * reported to cause trouble in some situations.
1062     */
1063     if (((int) getuid() == 0) || ((int) geteuid() == 0))
1064     fatal("ERROR: Eggdrop will not run as root!", 0);
1065     #endif
1066    
1067     #ifndef REPLACE_NOTIFIER
1068     init_threaddata(1);
1069     #endif
1070     init_userent();
1071     init_misc();
1072     init_bots();
1073     init_modules();
1074     if (backgrd)
1075     bg_prepare_split();
1076     init_tcl(argc, argv);
1077     init_language(0);
1078     #ifdef STATIC
1079     link_statics();
1080     #endif
1081     strncpyz(s, ctime(&now), sizeof s);
1082     strcpy(&s[11], &s[20]);
1083     putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
1084     chanprog();
1085     if (!encrypt_pass) {
1086     printf(MOD_NOCRYPT);
1087     bg_send_quit(BG_ABORT);
1088     exit(1);
1089     }
1090     i = 0;
1091     for (chan = chanset; chan; chan = chan->next)
1092     i++;
1093     putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
1094     botnetnick, i, count_users(userlist));
1095 pseudo 1.4 #ifdef TLS
1096     ssl_init();
1097     #endif
1098 simple 1.1 cache_miss = 0;
1099     cache_hit = 0;
1100     if (!pid_file[0])
1101     egg_snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
1102    
1103     /* Check for pre-existing eggdrop! */
1104     f = fopen(pid_file, "r");
1105     if (f != NULL) {
1106     fgets(s, 10, f);
1107     xx = atoi(s);
1108     i = kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
1109     * is used */
1110     if (i == 0 || errno != ESRCH) {
1111     printf(EGG_RUNNING1, botnetnick);
1112     printf(EGG_RUNNING2, pid_file);
1113     bg_send_quit(BG_ABORT);
1114     exit(1);
1115     }
1116     }
1117    
1118     /* Move into background? */
1119     if (backgrd) {
1120     bg_do_split();
1121     } else { /* !backgrd */
1122     xx = getpid();
1123     if (xx != 0) {
1124     FILE *fp;
1125    
1126     /* Write pid to file */
1127     unlink(pid_file);
1128     fp = fopen(pid_file, "w");
1129     if (fp != NULL) {
1130     fprintf(fp, "%u\n", xx);
1131     if (fflush(fp)) {
1132     /* Let the bot live since this doesn't appear to be a botchk */
1133     printf(EGG_NOWRITE, pid_file);
1134     fclose(fp);
1135     unlink(pid_file);
1136     } else
1137     fclose(fp);
1138     } else
1139     printf(EGG_NOWRITE, pid_file);
1140     }
1141     }
1142    
1143     use_stderr = 0; /* Stop writing to stderr now */
1144     if (backgrd) {
1145     /* Ok, try to disassociate from controlling terminal (finger cross) */
1146     #ifdef HAVE_SETPGID
1147     setpgid(0, 0);
1148     #endif
1149     /* Tcl wants the stdin, stdout and stderr file handles kept open. */
1150     freopen("/dev/null", "r", stdin);
1151     freopen("/dev/null", "w", stdout);
1152     freopen("/dev/null", "w", stderr);
1153     #ifdef CYGWIN_HACKS
1154     FreeConsole();
1155     #endif
1156     }
1157    
1158     /* Terminal emulating dcc chat */
1159     if (!backgrd && term_z) {
1160     int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
1161    
1162 pseudo 1.2 getvhost(&dcc[n].sockname, AF_INET);
1163 simple 1.1 dcc[n].sock = STDOUT;
1164     dcc[n].timeval = now;
1165     dcc[n].u.chat->con_flags = conmask;
1166     dcc[n].u.chat->strip_flags = STRIP_ALL;
1167     dcc[n].status = STAT_ECHO;
1168     strcpy(dcc[n].nick, "HQ");
1169     strcpy(dcc[n].host, "llama@console");
1170     /* HACK: Workaround not to pass literal "HQ" as a non-const arg */
1171     dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
1172     /* Make sure there's an innocuous HQ user if needed */
1173     if (!dcc[n].user) {
1174     userlist = adduser(userlist, dcc[n].nick, "none", "-", USER_PARTY);
1175     dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
1176     }
1177     setsock(STDOUT, 0); /* Entry in net table */
1178     dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
1179     dcc_chatter(n);
1180     }
1181    
1182     then = now;
1183     online_since = now;
1184     autolink_cycle(NULL); /* Hurry and connect to tandem bots */
1185     add_help_reference("cmds1.help");
1186     add_help_reference("cmds2.help");
1187     add_help_reference("core.help");
1188     add_hook(HOOK_SECONDLY, (Function) core_secondly);
1189     add_hook(HOOK_MINUTELY, (Function) core_minutely);
1190     add_hook(HOOK_HOURLY, (Function) core_hourly);
1191     add_hook(HOOK_REHASH, (Function) event_rehash);
1192     add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
1193     add_hook(HOOK_USERFILE, (Function) event_save);
1194     add_hook(HOOK_BACKUP, (Function) backup_userfile);
1195     add_hook(HOOK_DAILY, (Function) event_logfile);
1196     add_hook(HOOK_DAILY, (Function) event_resettraffic);
1197     add_hook(HOOK_LOADED, (Function) event_loaded);
1198    
1199     call_hook(HOOK_LOADED);
1200    
1201     debug0("main: entering loop");
1202     while (1) {
1203     mainloop(1);
1204     }
1205     }

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