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

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Revision 1.20 - (show annotations) (download) (as text)
Sun Dec 10 15:10:26 2000 UTC (18 years, 7 months ago) by guppy
Branch: MAIN
Changes since 1.19: +12 -22 lines
File MIME type: text/x-chdr
guppy: core_cleanup.diff ...

1 /*
2 * chanprog.c -- handles:
3 * rmspace()
4 * maintaining the server list
5 * revenge punishment
6 * timers, utimers
7 * telling the current programmed settings
8 * initializing a lot of stuff and loading the tcl scripts
9 *
10 * $Id: chanprog.c,v 1.19 2000/11/16 02:49:14 guppy Exp $
11 */
12 /*
13 * Copyright (C) 1997 Robey Pointer
14 * Copyright (C) 1999, 2000 Eggheads
15 *
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License
18 * as published by the Free Software Foundation; either version 2
19 * of the License, or (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 */
30
31 #include "main.h"
32 #if HAVE_GETRUSAGE
33 #include <sys/resource.h>
34 #if HAVE_SYS_RUSAGE_H
35 #include <sys/rusage.h>
36 #endif
37 #endif
38 #ifdef HAVE_UNAME
39 #include <sys/utsname.h>
40 #endif
41 #include "modules.h"
42
43 extern struct userrec *userlist;
44 extern log_t *logs;
45 extern Tcl_Interp *interp;
46 extern char ver[], botnetnick[], firewall[],
47 motdfile[], userfile[], helpdir[], tempdir[],
48 moddir[], notify_new[], owner[], configfile[];
49 extern time_t now, online_since;
50 extern int backgrd, term_z, con_chan, cache_hit, cache_miss,
51 firewallport, default_flags, max_logs, conmask,
52 protect_readonly, make_userfile, noshare,
53 ignore_time;
54
55 tcl_timer_t *timer = NULL; /* Minutely timer */
56 tcl_timer_t *utimer = NULL; /* Secondly timer */
57 unsigned long timer_id = 1; /* Next timer of any sort will
58 have this number */
59 struct chanset_t *chanset = NULL; /* Channel list */
60 char admin[121] = ""; /* Admin info */
61 char origbotname[NICKLEN + 1];
62 char botname[NICKLEN + 1]; /* Primary botname */
63
64
65 /* Remove space characters from beginning and end of string
66 * (more efficent by Fred1)
67 */
68 void rmspace(char *s)
69 {
70 #define whitespace(c) (((c) == 32) || ((c) == 9) || ((c) == 13) || ((c) == 10))
71 char *p;
72
73 if (*s == '\0')
74 return;
75
76 /* Wipe end of string */
77 for (p = s + strlen(s) - 1; ((whitespace(*p)) && (p >= s)); p--);
78 if (p != s + strlen(s) - 1)
79 *(p + 1) = 0;
80 for (p = s; ((whitespace(*p)) && (*p)); p++);
81 if (p != s)
82 strcpy(s, p);
83 }
84
85 /* Returns memberfields if the nick is in the member list.
86 */
87 memberlist *ismember(struct chanset_t *chan, char *nick)
88 {
89 register memberlist *x;
90
91 for (x = chan->channel.member; x && x->nick[0]; x = x->next)
92 if (!rfc_casecmp(x->nick, nick))
93 return x;
94 return NULL;
95 }
96
97 /* Find a chanset by channel name as the server knows it (ie !ABCDEchannel)
98 */
99 struct chanset_t *findchan(const char *name)
100 {
101 register struct chanset_t *chan;
102
103 for (chan = chanset; chan; chan = chan->next)
104 if (!rfc_casecmp(chan->name, name))
105 return chan;
106 return NULL;
107 }
108
109 /* Find a chanset by display name (ie !channel)
110 */
111 struct chanset_t *findchan_by_dname(const char *name)
112 {
113 register struct chanset_t *chan;
114
115 for (chan = chanset; chan; chan = chan->next)
116 if (!rfc_casecmp(chan->dname, name))
117 return chan;
118 return NULL;
119 }
120
121 /*
122 * "caching" functions
123 */
124
125 /* Shortcut for get_user_by_host -- might have user record in one
126 * of the channel caches.
127 */
128 struct userrec *check_chanlist(const char *host)
129 {
130 char *nick, *uhost, buf[UHOSTLEN];
131 register memberlist *m;
132 register struct chanset_t *chan;
133
134 strncpyz(buf, host, sizeof buf);
135 uhost = buf;
136 nick = splitnick(&uhost);
137 for (chan = chanset; chan; chan = chan->next)
138 for (m = chan->channel.member; m && m->nick[0]; m = m->next)
139 if (!rfc_casecmp(nick, m->nick) && !egg_strcasecmp(uhost, m->userhost))
140 return m->user;
141 return NULL;
142 }
143
144 /* Shortcut for get_user_by_handle -- might have user record in channels
145 */
146 struct userrec *check_chanlist_hand(const char *hand)
147 {
148 register struct chanset_t *chan;
149 register memberlist *m;
150
151 for (chan = chanset; chan; chan = chan->next)
152 for (m = chan->channel.member; m && m->nick[0]; m = m->next)
153 if (m->user && !egg_strcasecmp(m->user->handle, hand))
154 return m->user;
155 return NULL;
156 }
157
158 /* Clear the user pointers in the chanlists.
159 *
160 * Necessary when a hostmask is added/removed, a user is added or a new
161 * userfile is loaded.
162 */
163 void clear_chanlist(void)
164 {
165 register memberlist *m;
166 register struct chanset_t *chan;
167
168 for (chan = chanset; chan; chan = chan->next)
169 for (m = chan->channel.member; m && m->nick[0]; m = m->next)
170 m->user = NULL;
171 }
172
173 /* Clear the user pointer of a specific nick in the chanlists.
174 *
175 * Necessary when a hostmask is added/removed, a nick changes, etc.
176 * Does not completely invalidate the channel cache like clear_chanlist().
177 */
178 void clear_chanlist_member(const char *nick)
179 {
180 register memberlist *m;
181 register struct chanset_t *chan;
182
183 for (chan = chanset; chan; chan = chan->next)
184 for (m = chan->channel.member; m && m->nick[0]; m = m->next)
185 if (!rfc_casecmp(m->nick, nick)) {
186 m->user = NULL;
187 break;
188 }
189 }
190
191 /* If this user@host is in a channel, set it (it was null)
192 */
193 void set_chanlist(const char *host, struct userrec *rec)
194 {
195 char *nick, *uhost, buf[UHOSTLEN];
196 register memberlist *m;
197 register struct chanset_t *chan;
198
199 strncpyz(buf, host, sizeof buf);
200 uhost = buf;
201 nick = splitnick(&uhost);
202 for (chan = chanset; chan; chan = chan->next)
203 for (m = chan->channel.member; m && m->nick[0]; m = m->next)
204 if (!rfc_casecmp(nick, m->nick) && !egg_strcasecmp(uhost, m->userhost))
205 m->user = rec;
206 }
207
208 /* Calculate the memory we should be using
209 */
210 int expmem_chanprog()
211 {
212 register int tot = 0;
213 register tcl_timer_t *t;
214
215 for (t = timer; t; t = t->next)
216 tot += sizeof(tcl_timer_t) + strlen(t->cmd) + 1;
217 for (t = utimer; t; t = t->next)
218 tot += sizeof(tcl_timer_t) + strlen(t->cmd) + 1;
219 return tot;
220 }
221
222 /* Dump uptime info out to dcc (guppy 9Jan99)
223 */
224 void tell_verbose_uptime(int idx)
225 {
226 char s[256], s1[121];
227 time_t now2, hr, min;
228
229 now2 = now - online_since;
230 s[0] = 0;
231 if (now2 > 86400) {
232 /* days */
233 sprintf(s, "%d day", (int) (now2 / 86400));
234 if ((int) (now2 / 86400) >= 2)
235 strcat(s, "s");
236 strcat(s, ", ");
237 now2 -= (((int) (now2 / 86400)) * 86400);
238 }
239 hr = (time_t) ((int) now2 / 3600);
240 now2 -= (hr * 3600);
241 min = (time_t) ((int) now2 / 60);
242 sprintf(&s[strlen(s)], "%02d:%02d", (int) hr, (int) min);
243 s1[0] = 0;
244 if (backgrd)
245 strcpy(s1, MISC_BACKGROUND);
246 else {
247 if (term_z)
248 strcpy(s1, MISC_TERMMODE);
249 else if (con_chan)
250 strcpy(s1, MISC_STATMODE);
251 else
252 strcpy(s1, MISC_LOGMODE);
253 }
254 dprintf(idx, "%s %s (%s)\n", MISC_ONLINEFOR, s, s1);
255 }
256
257 /* Dump status info out to dcc
258 */
259 void tell_verbose_status(int idx)
260 {
261 char s[256], s1[121], s2[81];
262 char *vers_t, *uni_t;
263 int i;
264 time_t now2, hr, min;
265 #if HAVE_GETRUSAGE
266 struct rusage ru;
267 #else
268 # if HAVE_CLOCK
269 clock_t cl;
270 # endif
271 #endif
272 #ifdef HAVE_UNAME
273 struct utsname un;
274
275 if (!uname(&un) < 0) {
276 #endif
277 vers_t = " ";
278 uni_t = "*unknown*";
279 #ifdef HAVE_UNAME
280 } else {
281 vers_t = un.release;
282 uni_t = un.sysname;
283 }
284 #endif
285
286 i = count_users(userlist);
287 dprintf(idx, "I am %s, running %s: %d user%s (mem: %uk)\n",
288 botnetnick, ver, i, i == 1 ? "" : "s",
289 (int) (expected_memory() / 1024));
290 dprintf(idx, "Running on %s %s\n", uni_t, vers_t);
291 if (admin[0])
292 dprintf(idx, "Admin: %s\n", admin);
293 now2 = now - online_since;
294 s[0] = 0;
295 if (now2 > 86400) {
296 /* days */
297 sprintf(s, "%d day", (int) (now2 / 86400));
298 if ((int) (now2 / 86400) >= 2)
299 strcat(s, "s");
300 strcat(s, ", ");
301 now2 -= (((int) (now2 / 86400)) * 86400);
302 }
303 hr = (time_t) ((int) now2 / 3600);
304 now2 -= (hr * 3600);
305 min = (time_t) ((int) now2 / 60);
306 sprintf(&s[strlen(s)], "%02d:%02d", (int) hr, (int) min);
307 s1[0] = 0;
308 if (backgrd)
309 strcpy(s1, MISC_BACKGROUND);
310 else {
311 if (term_z)
312 strcpy(s1, MISC_TERMMODE);
313 else if (con_chan)
314 strcpy(s1, MISC_STATMODE);
315 else
316 strcpy(s1, MISC_LOGMODE);
317 }
318 #if HAVE_GETRUSAGE
319 getrusage(RUSAGE_SELF, &ru);
320 hr = (int) ((ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) / 60);
321 min = (int) ((ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) - (hr * 60));
322 sprintf(s2, "CPU %02d:%02d", (int) hr, (int) min); /* Actally min/sec */
323 #else
324 # if HAVE_CLOCK
325 cl = (clock() / CLOCKS_PER_SEC);
326 hr = (int) (cl / 60);
327 min = (int) (cl - (hr * 60));
328 sprintf(s2, "CPU %02d:%02d", (int) hr, (int) min); /* Actually min/sec */
329 # else
330 sprintf(s2, "CPU ???");
331 # endif
332 #endif
333 dprintf(idx, "%s %s (%s) %s %s %4.1f%%\n", MISC_ONLINEFOR,
334 s, s1, s2, MISC_CACHEHIT,
335 100.0 * ((float) cache_hit) / ((float) (cache_hit + cache_miss)));
336 if ((interp) && (Tcl_Eval(interp, "info library") == TCL_OK))
337 dprintf(idx, "%s %s\n", MISC_TCLLIBVER, interp->result);
338 }
339
340 /* Show all internal state variables
341 */
342 void tell_settings(int idx)
343 {
344 char s[1024];
345 int i;
346 struct flag_record fr = {FR_GLOBAL, 0, 0, 0, 0, 0};
347
348 dprintf(idx, "Botnet Nickname: %s\n", botnetnick);
349 if (firewall[0])
350 dprintf(idx, "Firewall: %s, port %d\n", firewall, firewallport);
351 dprintf(idx, "Userfile: %s Motd: %s\n", userfile, motdfile);
352 dprintf(idx, "Directories:\n");
353 dprintf(idx, " Help : %s\n", helpdir);
354 dprintf(idx, " Temp : %s\n", tempdir);
355 #ifndef STATIC
356 dprintf(idx, " Modules : %s\n", moddir);
357 #endif
358 fr.global = default_flags;
359
360 build_flags(s, &fr, NULL);
361 dprintf(idx, "%s [%s], %s: %s\n", MISC_NEWUSERFLAGS, s,
362 MISC_NOTIFY, notify_new);
363 if (owner[0])
364 dprintf(idx, "%s: %s\n", MISC_PERMOWNER, owner);
365 for (i = 0; i < max_logs; i++)
366 if (logs[i].filename != NULL) {
367 dprintf(idx, "Logfile #%d: %s on %s (%s: %s)\n", i + 1,
368 logs[i].filename, logs[i].chname,
369 masktype(logs[i].mask), maskname(logs[i].mask));
370 }
371 dprintf(idx, "Ignores last %d mins\n", ignore_time);
372 }
373
374 void reaffirm_owners()
375 {
376 char *p, *q, s[121];
377 struct userrec *u;
378
379 /* Make sure default owners are +n */
380 if (owner[0]) {
381 q = owner;
382 p = strchr(q, ',');
383 while (p) {
384 strncpyz(s, q, p - q);
385 rmspace(s);
386 u = get_user_by_handle(userlist, s);
387 if (u)
388 u->flags = sanity_check(u->flags | USER_OWNER);
389 q = p + 1;
390 p = strchr(q, ',');
391 }
392 strcpy(s, q);
393 rmspace(s);
394 u = get_user_by_handle(userlist, s);
395 if (u)
396 u->flags = sanity_check(u->flags | USER_OWNER);
397 }
398 }
399
400 void chanprog()
401 {
402 int i;
403
404 admin[0] = 0;
405 helpdir[0] = 0;
406 tempdir[0] = 0;
407 for (i = 0; i < max_logs; i++)
408 logs[i].flags |= LF_EXPIRING;
409 conmask = 0;
410 /* Turn off read-only variables (make them write-able) for rehash */
411 protect_readonly = 0;
412 /* Now read it */
413 if (!readtclprog(configfile))
414 fatal(MISC_NOCONFIGFILE, 0);
415 for (i = 0; i < max_logs; i++) {
416 if (logs[i].flags & LF_EXPIRING) {
417 if (logs[i].filename != NULL) {
418 nfree(logs[i].filename);
419 logs[i].filename = NULL;
420 }
421 if (logs[i].chname != NULL) {
422 nfree(logs[i].chname);
423 logs[i].chname = NULL;
424 }
425 if (logs[i].f != NULL) {
426 fclose(logs[i].f);
427 logs[i].f = NULL;
428 }
429 logs[i].mask = 0;
430 logs[i].flags = 0;
431 }
432 }
433 /* We should be safe now */
434 call_hook(HOOK_REHASH);
435 protect_readonly = 1;
436 if (!userfile[0])
437 fatal(MISC_NOUSERFILE2, 0);
438 if ((int) getuid() == 0) {
439 /* Perhaps you should make it run something innocent here ;)
440 * like rm -rf /etc :) */
441 printf("\n\n%s\n", MISC_ROOTWARN);
442 }
443 if (!readuserfile(userfile, &userlist)) {
444 if (!make_userfile) {
445 char tmp[178];
446
447 egg_snprintf(tmp, sizeof tmp, MISC_NOUSERFILE, configfile);
448 fatal(tmp, 0);
449 }
450 printf("\n\n%s\n", MISC_NOUSERFILE2);
451 if (module_find("server", 0, 0))
452 printf(MISC_USERFCREATE1, origbotname);
453 printf("%s\n\n", MISC_USERFCREATE2);
454 } else if (make_userfile) {
455 make_userfile = 0;
456 printf("%s\n", MISC_USERFEXISTS);
457 }
458 if (helpdir[0])
459 if (helpdir[strlen(helpdir) - 1] != '/')
460 strcat(helpdir, "/");
461 if (tempdir[0])
462 if (tempdir[strlen(tempdir) - 1] != '/')
463 strcat(tempdir, "/");
464 if (!botnetnick[0]) {
465 strncpyz(botnetnick, origbotname, HANDLEN + 1);
466 }
467 if (!botnetnick[0])
468 fatal("I don't have a botnet nick!!\n", 0);
469 /* Test tempdir: it's vital */
470 {
471 FILE *f;
472 char s[161], rands[8];
473
474 /* Possible file race condition solved by using a random string
475 * and the process id in the filename.
476 * FIXME: This race is only partitially fixed. We could still be
477 * overwriting an existing file / following a malicious
478 * link.
479 */
480 make_rand_str(rands, 7); /* create random string */
481 sprintf(s, "%s.test-%u-%s", tempdir, getpid(), rands);
482 f = fopen(s, "w");
483 if (f == NULL)
484 fatal(MISC_CANTWRITETEMP, 0);
485 fclose(f);
486 unlink(s);
487 }
488 reaffirm_owners();
489 }
490
491 /* Reload the user file from disk
492 */
493 void reload()
494 {
495 FILE *f;
496
497 f = fopen(userfile, "r");
498 if (f == NULL) {
499 putlog(LOG_MISC, "*", MISC_CANTRELOADUSER);
500 return;
501 }
502 fclose(f);
503 noshare = 1;
504 clear_userlist(userlist);
505 noshare = 0;
506 userlist = NULL;
507 if (!readuserfile(userfile, &userlist))
508 fatal(MISC_MISSINGUSERF, 0);
509 reaffirm_owners();
510 call_hook(HOOK_READ_USERFILE);
511 }
512
513 void rehash()
514 {
515 call_hook(HOOK_PRE_REHASH);
516 noshare = 1;
517 clear_userlist(userlist);
518 noshare = 0;
519 userlist = NULL;
520 chanprog();
521 }
522
523 /*
524 * Brief venture into timers
525 */
526
527 /* Add a timer
528 */
529 unsigned long add_timer(tcl_timer_t **stack, int elapse, char *cmd,
530 unsigned long prev_id)
531 {
532 tcl_timer_t *old = (*stack);
533
534 *stack = (tcl_timer_t *) nmalloc(sizeof(tcl_timer_t));
535 (*stack)->next = old;
536 (*stack)->mins = elapse;
537 (*stack)->cmd = (char *) nmalloc(strlen(cmd) + 1);
538 strcpy((*stack)->cmd, cmd);
539 /* If it's just being added back and already had an id,
540 * don't create a new one.
541 */
542 if (prev_id > 0)
543 (*stack)->id = prev_id;
544 else
545 (*stack)->id = timer_id++;
546 return (*stack)->id;
547 }
548
549 /* Remove a timer, by id
550 */
551 int remove_timer(tcl_timer_t **stack, unsigned long id)
552 {
553 tcl_timer_t *old;
554 int ok = 0;
555
556 while (*stack) {
557 if ((*stack)->id == id) {
558 ok++;
559 old = *stack;
560 *stack = ((*stack)->next);
561 nfree(old->cmd);
562 nfree(old);
563 } else
564 stack = &((*stack)->next);
565 }
566 return ok;
567 }
568
569 /* Check timers, execute the ones that have expired.
570 */
571 void do_check_timers(tcl_timer_t **stack)
572 {
573 tcl_timer_t *mark = *stack, *old = NULL;
574 char x[16];
575
576 /* New timers could be added by a Tcl script inside a current timer
577 * so i'll just clear out the timer list completely, and add any
578 * unexpired timers back on.
579 */
580 *stack = NULL;
581 while (mark) {
582 if (mark->mins > 0)
583 mark->mins--;
584 old = mark;
585 mark = mark->next;
586 if (!old->mins) {
587 egg_snprintf(x, sizeof x, "timer%lu", old->id);
588 do_tcl(x, old->cmd);
589 nfree(old->cmd);
590 nfree(old);
591 } else {
592 old->next = *stack;
593 *stack = old;
594 }
595 }
596 }
597
598 /* Wipe all timers.
599 */
600 void wipe_timers(Tcl_Interp *irp, tcl_timer_t **stack)
601 {
602 tcl_timer_t *mark = *stack, *old;
603
604 while (mark) {
605 old = mark;
606 mark = mark->next;
607 nfree(old->cmd);
608 nfree(old);
609 }
610 *stack = NULL;
611 }
612
613 /* Return list of timers
614 */
615 void list_timers(Tcl_Interp *irp, tcl_timer_t *stack)
616 {
617 tcl_timer_t *mark = stack;
618 char mins[10], id[16], *argv[3], *x;
619
620 while (mark != NULL) {
621 egg_snprintf(mins, sizeof mins, "%u", mark->mins);
622 egg_snprintf(id, sizeof id, "timer%lu", mark->id);
623 argv[0] = mins;
624 argv[1] = mark->cmd;
625 argv[2] = id;
626 x = Tcl_Merge(3, argv);
627 Tcl_AppendElement(irp, x);
628 Tcl_Free((char *) x);
629 mark = mark->next;
630 }
631 }
632
633 /* Oddly enough, written by proton (Emech's coder)
634 */
635 int isowner(char *name)
636 {
637 char *pa, *pb;
638 char nl, pl;
639
640 if (!owner || !*owner)
641 return (0);
642 if (!name || !*name)
643 return (0);
644 nl = strlen(name);
645 pa = owner;
646 pb = owner;
647 while (1) {
648 while (1) {
649 if ((*pb == 0) || (*pb == ',') || (*pb == ' '))
650 break;
651 pb++;
652 }
653 pl = (unsigned int) pb - (unsigned int) pa;
654 if (pl == nl && !egg_strncasecmp(pa, name, nl))
655 return (1);
656 while (1) {
657 if ((*pb == 0) || ((*pb != ',') && (*pb != ' ')))
658 break;
659 pb++;
660 }
661 if (*pb == 0)
662 return (0);
663 pa = pb;
664 }
665 }

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