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root/svn/ircd-hybrid/src/client.c
Revision: 235
Committed: Sat Nov 5 11:31:51 2005 UTC (18 years, 4 months ago) by michael
Content type: text/x-csrc
File size: 49786 byte(s)
Log Message:
- Fixed and cleaned up new acceptcode, e.g fix memory leaks,
  don't allow wildcards in a mask when removing accepts, don't
  allow redundant masks etc.

File Contents

# Content
1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * client.c: Controls clients.
4 *
5 * Copyright (C) 2002 by the past and present ircd coders, and others.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 * $Id$
23 */
24
25 #include "stdinc.h"
26 #include "client.h"
27 #include "channel_mode.h"
28 #include "common.h"
29 #include "hash.h"
30 #include "ircd.h"
31 #include "s_gline.h"
32 #include "numeric.h"
33 #include "packet.h"
34 #include "s_auth.h"
35 #include "s_conf.h"
36 #include "parse_aline.h"
37 #include "s_serv.h"
38 #include "send.h"
39 #include "whowas.h"
40 #include "s_user.h"
41 #include "hostmask.h"
42 #include "listener.h"
43 #include "userhost.h"
44 #include "s_stats.h"
45 #include "watch.h"
46
47 dlink_list listing_client_list = { NULL, NULL, 0 };
48 /* Pointer to beginning of Client list */
49 dlink_list global_client_list = {NULL, NULL, 0};
50 /* unknown/client pointer lists */
51 dlink_list unknown_list = {NULL, NULL, 0};
52 dlink_list local_client_list = {NULL, NULL, 0};
53 dlink_list serv_list = {NULL, NULL, 0};
54 dlink_list global_serv_list = {NULL, NULL, 0};
55 dlink_list oper_list = {NULL, NULL, 0};
56
57 static EVH check_pings;
58
59 static BlockHeap *client_heap = NULL;
60 static BlockHeap *lclient_heap = NULL;
61
62 static dlink_list dead_list = { NULL, NULL, 0};
63 static dlink_list abort_list = { NULL, NULL, 0};
64
65 static dlink_node *eac_next; /* next aborted client to exit */
66
67 static void check_pings_list(dlink_list *);
68 static void check_unknowns_list(void);
69 static void close_connection(struct Client *);
70 static void ban_them(struct Client *client_p, struct ConfItem *conf);
71 static void del_all_accepts(struct Client *);
72
73 /* init_client()
74 *
75 * inputs - NONE
76 * output - NONE
77 * side effects - initialize client free memory
78 */
79 void
80 init_client(void)
81 {
82 /* start off the check ping event .. -- adrian
83 * Every 30 seconds is plenty -- db
84 */
85 client_heap = BlockHeapCreate("client", sizeof(struct Client), CLIENT_HEAP_SIZE);
86 lclient_heap = BlockHeapCreate("local client", sizeof(struct LocalUser), LCLIENT_HEAP_SIZE);
87 eventAdd("check_pings", check_pings, NULL, 5);
88 }
89
90 /*
91 * make_client - create a new Client struct and set it to initial state.
92 *
93 * from == NULL, create local client (a client connected
94 * to a socket).
95 * WARNING: This leaves the client in a dangerous
96 * state where fd == -1, dead flag is not set and
97 * the client is on the unknown_list; therefore,
98 * the first thing to do after calling make_client(NULL)
99 * is setting fd to something reasonable. -adx
100 *
101 * from, create remote client (behind a socket
102 * associated with the client defined by
103 * 'from'). ('from' is a local client!!).
104 */
105 struct Client *
106 make_client(struct Client *from)
107 {
108 struct Client *client_p = BlockHeapAlloc(client_heap);
109
110 if (from == NULL)
111 {
112 client_p->from = client_p; /* 'from' of local client is self! */
113 client_p->since = client_p->lasttime = client_p->firsttime = CurrentTime;
114
115 client_p->localClient = BlockHeapAlloc(lclient_heap);
116 /* as good a place as any... */
117 dlinkAdd(client_p, make_dlink_node(), &unknown_list);
118 }
119 else
120 client_p->from = from; /* 'from' of local client is self! */
121
122 client_p->hnext = client_p;
123 client_p->status = STAT_UNKNOWN;
124 strcpy(client_p->username, "unknown");
125
126 return client_p;
127 }
128
129 /*
130 * free_client
131 *
132 * inputs - pointer to client
133 * output - NONE
134 * side effects - client pointed to has its memory freed
135 */
136 static void
137 free_client(struct Client *client_p)
138 {
139 assert(client_p != NULL);
140 assert(client_p != &me);
141 assert(client_p->hnext == client_p);
142 assert(client_p->invited.head == NULL);
143 assert(client_p->channel.head == NULL);
144 assert(dlink_list_length(&client_p->invited) == 0);
145 assert(dlink_list_length(&client_p->channel) == 0);
146
147 MyFree(client_p->away);
148 MyFree(client_p->serv);
149
150 if (MyConnect(client_p))
151 {
152 assert(IsClosing(client_p) && IsDead(client_p));
153
154 MyFree(client_p->localClient->response);
155 MyFree(client_p->localClient->auth_oper);
156
157 /*
158 * clean up extra sockets from P-lines which have been discarded.
159 */
160 if (client_p->localClient->listener)
161 {
162 assert(0 < client_p->localClient->listener->ref_count);
163 if (0 == --client_p->localClient->listener->ref_count &&
164 !client_p->localClient->listener->active)
165 free_listener(client_p->localClient->listener);
166 }
167
168 dbuf_clear(&client_p->localClient->buf_recvq);
169 dbuf_clear(&client_p->localClient->buf_sendq);
170
171 BlockHeapFree(lclient_heap, client_p->localClient);
172 }
173
174 BlockHeapFree(client_heap, client_p);
175 }
176
177 /*
178 * check_pings - go through the local client list and check activity
179 * kill off stuff that should die
180 *
181 * inputs - NOT USED (from event)
182 * output - next time_t when check_pings() should be called again
183 * side effects -
184 *
185 *
186 * A PING can be sent to clients as necessary.
187 *
188 * Client/Server ping outs are handled.
189 */
190
191 /*
192 * Addon from adrian. We used to call this after nextping seconds,
193 * however I've changed it to run once a second. This is only for
194 * PING timeouts, not K/etc-line checks (thanks dianora!). Having it
195 * run once a second makes life a lot easier - when a new client connects
196 * and they need a ping in 4 seconds, if nextping was set to 20 seconds
197 * we end up waiting 20 seconds. This is stupid. :-)
198 * I will optimise (hah!) check_pings() once I've finished working on
199 * tidying up other network IO evilnesses.
200 * -- adrian
201 */
202
203 static void
204 check_pings(void *notused)
205 {
206 check_pings_list(&local_client_list);
207 check_pings_list(&serv_list);
208 check_unknowns_list();
209 }
210
211 /* check_pings_list()
212 *
213 * inputs - pointer to list to check
214 * output - NONE
215 * side effects -
216 */
217 static void
218 check_pings_list(dlink_list *list)
219 {
220 char scratch[32]; /* way too generous but... */
221 struct Client *client_p; /* current local client_p being examined */
222 int ping, pingwarn; /* ping time value from client */
223 dlink_node *ptr, *next_ptr;
224
225 DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
226 {
227 client_p = ptr->data;
228
229 /*
230 ** Note: No need to notify opers here. It's
231 ** already done when "FLAGS_DEADSOCKET" is set.
232 */
233 if (IsDead(client_p))
234 {
235 /* Ignore it, its been exited already */
236 continue;
237 }
238
239 if (client_p->localClient->reject_delay > 0)
240 {
241 if (client_p->localClient->reject_delay <= CurrentTime)
242 exit_client(client_p, &me, "Rejected");
243 continue;
244 }
245
246 if (GlobalSetOptions.idletime && IsClient(client_p))
247 {
248 if (!IsExemptKline(client_p) && !IsOper(client_p) &&
249 !IsIdlelined(client_p) &&
250 ((CurrentTime - client_p->localClient->last) > GlobalSetOptions.idletime))
251 {
252 struct ConfItem *conf;
253 struct AccessItem *aconf;
254
255 conf = make_conf_item(KLINE_TYPE);
256 aconf = &conf->conf.AccessItem;
257
258 DupString(aconf->host, client_p->host);
259 DupString(aconf->reason, "idle exceeder");
260 DupString(aconf->user, client_p->username);
261 aconf->hold = CurrentTime + 60;
262 add_temp_line(conf);
263
264 sendto_realops_flags(UMODE_ALL, L_ALL,
265 "Idle time limit exceeded for %s - temp k-lining",
266 get_client_name(client_p, HIDE_IP));
267 exit_client(client_p, &me, aconf->reason);
268 continue;
269 }
270 }
271
272 if (!IsRegistered(client_p))
273 ping = CONNECTTIMEOUT, pingwarn = 0;
274 else
275 ping = get_client_ping(client_p, &pingwarn);
276
277 if (ping < CurrentTime - client_p->lasttime)
278 {
279 if (!IsPingSent(client_p))
280 {
281 /*
282 * if we havent PINGed the connection and we havent
283 * heard from it in a while, PING it to make sure
284 * it is still alive.
285 */
286 SetPingSent(client_p);
287 ClearPingWarning(client_p);
288 client_p->lasttime = CurrentTime - ping;
289 sendto_one(client_p, "PING :%s", ID_or_name(&me, client_p));
290 }
291 else
292 {
293 if (CurrentTime - client_p->lasttime >= 2 * ping)
294 {
295 /*
296 * If the client/server hasn't talked to us in 2*ping seconds
297 * and it has a ping time, then close its connection.
298 */
299 if (IsServer(client_p) || IsHandshake(client_p))
300 {
301 sendto_realops_flags(UMODE_ALL, L_ADMIN,
302 "No response from %s, closing link",
303 get_client_name(client_p, HIDE_IP));
304 sendto_realops_flags(UMODE_ALL, L_OPER,
305 "No response from %s, closing link",
306 get_client_name(client_p, MASK_IP));
307 ilog(L_NOTICE, "No response from %s, closing link",
308 get_client_name(client_p, HIDE_IP));
309 }
310 ircsprintf(scratch, "Ping timeout: %d seconds",
311 (int)(CurrentTime - client_p->lasttime));
312
313 exit_client(client_p, &me, scratch);
314 }
315 else if (!IsPingWarning(client_p) && pingwarn > 0 &&
316 (IsServer(client_p) || IsHandshake(client_p)) &&
317 CurrentTime - client_p->lasttime >= ping + pingwarn)
318 {
319 /*
320 * If the server hasn't replied in pingwarn seconds after sending
321 * the PING, notify the opers so that they are aware of the problem.
322 */
323 SetPingWarning(client_p);
324 sendto_realops_flags(UMODE_ALL, L_ADMIN,
325 "Warning, no response from %s in %d seconds",
326 get_client_name(client_p, HIDE_IP), pingwarn);
327 sendto_realops_flags(UMODE_ALL, L_OPER,
328 "Warning, no response from %s in %d seconds",
329 get_client_name(client_p, MASK_IP), pingwarn);
330 ilog(L_NOTICE, "No response from %s in %d seconds",
331 get_client_name(client_p, HIDE_IP), pingwarn);
332 }
333 }
334 }
335 }
336 }
337
338 /* check_unknowns_list()
339 *
340 * inputs - pointer to list of unknown clients
341 * output - NONE
342 * side effects - unknown clients get marked for termination after n seconds
343 */
344 static void
345 check_unknowns_list(void)
346 {
347 dlink_node *ptr, *next_ptr;
348
349 DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head)
350 {
351 struct Client *client_p = ptr->data;
352
353 if (client_p->localClient->reject_delay > 0)
354 {
355 if (client_p->localClient->reject_delay <= CurrentTime)
356 exit_client(client_p, &me, "Rejected");
357 continue;
358 }
359
360 /* Check UNKNOWN connections - if they have been in this state
361 * for > 30s, close them.
362 */
363 if (client_p->firsttime ? ((CurrentTime - client_p->firsttime) > 30) : 0)
364 exit_client(client_p, &me, "Connection timed out");
365 }
366 }
367
368 /* check_conf_klines()
369 *
370 * inputs - NONE
371 * output - NONE
372 * side effects - Check all connections for a pending kline against the
373 * client, exit the client if a kline matches.
374 */
375 void
376 check_conf_klines(void)
377 {
378 struct Client *client_p = NULL; /* current local client_p being examined */
379 struct AccessItem *aconf = NULL;
380 struct ConfItem *conf = NULL;
381 dlink_node *ptr, *next_ptr;
382
383 DLINK_FOREACH_SAFE(ptr, next_ptr, local_client_list.head)
384 {
385 client_p = ptr->data;
386
387 /* If a client is already being exited
388 */
389 if (IsDead(client_p) || !IsClient(client_p))
390 continue;
391
392 /* if there is a returned struct ConfItem then kill it */
393 if ((aconf = find_dline_conf(&client_p->localClient->ip,
394 client_p->localClient->aftype)) != NULL)
395 {
396 if (aconf->status & CONF_EXEMPTDLINE)
397 continue;
398
399 conf = aconf->conf_ptr;
400 ban_them(client_p, conf);
401 continue; /* and go examine next fd/client_p */
402 }
403
404 if (ConfigFileEntry.glines && (aconf = find_gline(client_p)) != NULL)
405 {
406 if (IsExemptKline(client_p) || IsExemptGline(client_p))
407 {
408 sendto_realops_flags(UMODE_ALL, L_ALL,
409 "GLINE over-ruled for %s, client is %cline_exempt",
410 get_client_name(client_p, HIDE_IP),
411 IsExemptKline(client_p) ? 'k' : 'g');
412 continue;
413 }
414
415 conf = aconf->conf_ptr;
416 ban_them(client_p, conf);
417 /* and go examine next fd/client_p */
418 continue;
419 }
420
421 if ((aconf = find_kill(client_p)) != NULL)
422 {
423
424 /* if there is a returned struct AccessItem.. then kill it */
425 if (IsExemptKline(client_p))
426 {
427 sendto_realops_flags(UMODE_ALL, L_ALL,
428 "KLINE over-ruled for %s, client is kline_exempt",
429 get_client_name(client_p, HIDE_IP));
430 continue;
431 }
432
433 conf = aconf->conf_ptr;
434 ban_them(client_p, conf);
435 continue;
436 }
437
438 /* if there is a returned struct MatchItem then kill it */
439 if ((conf = find_matching_name_conf(XLINE_TYPE, client_p->info,
440 NULL, NULL, 0)) != NULL ||
441 (conf = find_matching_name_conf(RXLINE_TYPE, client_p->info,
442 NULL, NULL, 0)) != NULL)
443 {
444 ban_them(client_p, conf);
445 continue;
446 }
447 }
448
449 /* also check the unknowns list for new dlines */
450 DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head)
451 {
452 client_p = ptr->data;
453
454 if ((aconf = find_dline_conf(&client_p->localClient->ip,
455 client_p->localClient->aftype)))
456 {
457 if (aconf->status & CONF_EXEMPTDLINE)
458 continue;
459
460 exit_client(client_p, &me, "D-lined");
461 }
462 }
463 }
464
465 /*
466 * ban_them
467 *
468 * inputs - pointer to client to ban
469 * - pointer to ConfItem
470 * output - NONE
471 * side effects - given client_p is banned
472 */
473 static void
474 ban_them(struct Client *client_p, struct ConfItem *conf)
475 {
476 const char *user_reason = NULL; /* What is sent to user */
477 const char *channel_reason = NULL; /* What is sent to channel */
478 struct AccessItem *aconf = NULL;
479 struct MatchItem *xconf = NULL;
480 const char *type_string = NULL;
481 const char dline_string[] = "D-line";
482 const char kline_string[] = "K-line";
483 const char gline_string[] = "G-line";
484 const char xline_string[] = "X-line";
485
486 switch (conf->type)
487 {
488 case RKLINE_TYPE:
489 case KLINE_TYPE:
490 type_string = kline_string;
491 aconf = &conf->conf.AccessItem;
492 break;
493 case DLINE_TYPE:
494 type_string = dline_string;
495 aconf = &conf->conf.AccessItem;
496 break;
497 case GLINE_TYPE:
498 type_string = gline_string;
499 aconf = &conf->conf.AccessItem;
500 break;
501 case RXLINE_TYPE:
502 case XLINE_TYPE:
503 type_string = xline_string;
504 xconf = &conf->conf.MatchItem;
505 ++xconf->count;
506 break;
507 default:
508 assert(0);
509 break;
510 }
511
512 if (ConfigFileEntry.kline_with_reason)
513 {
514 if (aconf != NULL)
515 user_reason = aconf->reason ? aconf->reason : type_string;
516 if (xconf != NULL)
517 user_reason = xconf->reason ? xconf->reason : type_string;
518 }
519 else
520 user_reason = type_string;
521
522 if (ConfigFileEntry.kline_reason != NULL)
523 channel_reason = ConfigFileEntry.kline_reason;
524 else
525 channel_reason = user_reason;
526
527 sendto_realops_flags(UMODE_ALL, L_ALL, "%s active for %s",
528 type_string, get_client_name(client_p, HIDE_IP));
529
530 if (IsClient(client_p))
531 sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP),
532 me.name, client_p->name, user_reason);
533
534 exit_client(client_p, &me, channel_reason);
535 }
536
537 /* update_client_exit_stats()
538 *
539 * input - pointer to client
540 * output - NONE
541 * side effects -
542 */
543 static void
544 update_client_exit_stats(struct Client *client_p)
545 {
546 if (IsServer(client_p))
547 {
548 sendto_realops_flags(UMODE_EXTERNAL, L_ALL,
549 "Server %s split from %s",
550 client_p->name, client_p->servptr->name);
551 }
552 else if (IsClient(client_p))
553 {
554 --Count.total;
555 if (IsOper(client_p))
556 --Count.oper;
557 if (IsInvisible(client_p))
558 --Count.invisi;
559 }
560
561 if (splitchecking && !splitmode)
562 check_splitmode(NULL);
563 }
564
565 /* find_person()
566 *
567 * inputs - pointer to name
568 * output - return client pointer
569 * side effects - find person by (nick)name
570 */
571 /* XXX - ugly wrapper */
572 struct Client *
573 find_person(const struct Client *client_p, const char *name)
574 {
575 struct Client *c2ptr;
576
577 if (IsDigit(*name))
578 {
579 if ((c2ptr = hash_find_id(name)) != NULL)
580 {
581 /* invisible users shall not be found by UID guessing */
582 if (IsInvisible(c2ptr) && !IsServer(client_p))
583 c2ptr = NULL;
584 }
585 }
586 else
587 c2ptr = find_client(name);
588
589 return ((c2ptr != NULL && IsClient(c2ptr)) ? c2ptr : NULL);
590 }
591
592 /*
593 * find_chasing - find the client structure for a nick name (user)
594 * using history mechanism if necessary. If the client is not found,
595 * an error message (NO SUCH NICK) is generated. If the client was found
596 * through the history, chasing will be 1 and otherwise 0.
597 */
598 struct Client *
599 find_chasing(struct Client *client_p, struct Client *source_p, const char *user, int *chasing)
600 {
601 struct Client *who = find_person(client_p, user);
602
603 if (chasing)
604 *chasing = 0;
605
606 if (who)
607 return(who);
608
609 if (IsDigit(*user))
610 return(NULL);
611
612 if ((who = get_history(user,
613 (time_t)ConfigFileEntry.kill_chase_time_limit))
614 == NULL)
615 {
616 sendto_one(source_p, form_str(ERR_NOSUCHNICK),
617 me.name, source_p->name, user);
618 return(NULL);
619 }
620
621 if (chasing)
622 *chasing = 1;
623
624 return(who);
625 }
626
627 /*
628 * get_client_name - Return the name of the client
629 * for various tracking and
630 * admin purposes. The main purpose of this function is to
631 * return the "socket host" name of the client, if that
632 * differs from the advertised name (other than case).
633 * But, this can be used to any client structure.
634 *
635 * NOTE 1:
636 * Watch out the allocation of "nbuf", if either source_p->name
637 * or source_p->sockhost gets changed into pointers instead of
638 * directly allocated within the structure...
639 *
640 * NOTE 2:
641 * Function return either a pointer to the structure (source_p) or
642 * to internal buffer (nbuf). *NEVER* use the returned pointer
643 * to modify what it points!!!
644 */
645 const char *
646 get_client_name(struct Client *client, int showip)
647 {
648 static char nbuf[HOSTLEN * 2 + USERLEN + 5];
649
650 assert(client != NULL);
651
652 if (irccmp(client->name, client->host) == 0)
653 return(client->name);
654
655 if (ConfigServerHide.hide_server_ips)
656 if (IsServer(client) || IsConnecting(client) || IsHandshake(client))
657 showip = MASK_IP;
658
659 if (ConfigFileEntry.hide_spoof_ips)
660 if (showip == SHOW_IP && IsIPSpoof(client))
661 showip = MASK_IP;
662
663 /* And finally, let's get the host information, ip or name */
664 switch (showip)
665 {
666 case SHOW_IP:
667 if (MyConnect(client))
668 {
669 ircsprintf(nbuf, "%s[%s@%s]", client->name, client->username,
670 client->sockhost);
671 break;
672 }
673 case MASK_IP:
674 ircsprintf(nbuf, "%s[%s@255.255.255.255]", client->name,
675 client->username);
676 break;
677 default:
678 ircsprintf(nbuf, "%s[%s@%s]", client->name, client->username,
679 client->host);
680 }
681
682 return(nbuf);
683 }
684
685 void
686 free_exited_clients(void)
687 {
688 dlink_node *ptr, *next;
689 struct Client *target_p;
690
691 DLINK_FOREACH_SAFE(ptr, next, dead_list.head)
692 {
693 target_p = ptr->data;
694
695 if (ptr->data == NULL)
696 {
697 sendto_realops_flags(UMODE_ALL, L_ALL,
698 "Warning: null client on dead_list!");
699 dlinkDelete(ptr, &dead_list);
700 free_dlink_node(ptr);
701 continue;
702 }
703
704 free_client(target_p);
705 dlinkDelete(ptr, &dead_list);
706 free_dlink_node(ptr);
707 }
708 }
709
710 /*
711 * Exit one client, local or remote. Assuming all dependents have
712 * been already removed, and socket closed for local client.
713 *
714 * The only messages generated are QUITs on channels.
715 */
716 static void
717 exit_one_client(struct Client *source_p, const char *quitmsg)
718 {
719 dlink_node *lp = NULL, *next_lp = NULL;
720
721 assert(!IsMe(source_p));
722
723 if (IsServer(source_p))
724 {
725 dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers);
726
727 if ((lp = dlinkFindDelete(&global_serv_list, source_p)) != NULL)
728 free_dlink_node(lp);
729
730 if (!MyConnect(source_p))
731 {
732 source_p->from->serv->dep_servers--;
733 assert(source_p->from->serv->dep_servers > 0);
734 }
735 }
736 else if (IsClient(source_p))
737 {
738 if (source_p->servptr->serv != NULL)
739 dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users);
740
741 /* If a person is on a channel, send a QUIT notice
742 ** to every client (person) on the same channel (so
743 ** that the client can show the "**signoff" message).
744 ** (Note: The notice is to the local clients *only*)
745 */
746 sendto_common_channels_local(source_p, 0, ":%s!%s@%s QUIT :%s",
747 source_p->name, source_p->username,
748 source_p->host, quitmsg);
749 DLINK_FOREACH_SAFE(lp, next_lp, source_p->channel.head)
750 remove_user_from_channel(lp->data);
751
752 /* Clean up invitefield */
753 DLINK_FOREACH_SAFE(lp, next_lp, source_p->invited.head)
754 del_invite(lp->data, source_p);
755
756 /* Clean up allow lists */
757 del_all_accepts(source_p);
758 add_history(source_p, 0);
759 off_history(source_p);
760
761 assert(source_p->whowas.head == NULL);
762 assert(source_p->whowas.tail == NULL);
763
764 if (!MyConnect(source_p))
765 {
766 source_p->from->serv->dep_users--;
767 assert(source_p->from->serv->dep_users >= 0);
768 }
769 }
770
771 /* Remove source_p from the client lists */
772 if (HasID(source_p))
773 hash_del_id(source_p);
774 if (source_p->name[0])
775 hash_del_client(source_p);
776
777 hash_check_watch(source_p, RPL_LOGOFF);
778
779 if (IsUserHostIp(source_p))
780 delete_user_host(source_p->username, source_p->host, !MyConnect(source_p));
781
782 /* remove from global client list
783 * NOTE: source_p->node.next cannot be NULL if the client is added
784 * to global_client_list (there is always &me at its end)
785 */
786 if (source_p != NULL && source_p->node.next != NULL)
787 dlinkDelete(&source_p->node, &global_client_list);
788
789 update_client_exit_stats(source_p);
790
791 /* Check to see if the client isn't already on the dead list */
792 assert(dlinkFind(&dead_list, source_p) == NULL);
793
794 /* add to dead client dlist */
795 SetDead(source_p);
796 dlinkAdd(source_p, make_dlink_node(), &dead_list);
797 }
798
799 /* Recursively send QUITs and SQUITs for source_p and all its dependent clients
800 * and servers to those servers that need them. A server needs the client
801 * QUITs if it can't figure them out from the SQUIT (ie pre-TS4) or if it
802 * isn't getting the SQUIT because of @#(*&@)# hostmasking. With TS4, once
803 * a link gets a SQUIT, it doesn't need any QUIT/SQUITs for clients depending
804 * on that one -orabidoo
805 *
806 * This is now called on each local server -adx
807 */
808 static void
809 recurse_send_quits(struct Client *original_source_p, struct Client *source_p,
810 struct Client *from, struct Client *to, const char *comment,
811 const char *splitstr, const char *myname)
812 {
813 dlink_node *ptr, *next;
814 struct Client *target_p;
815 int hidden = match(myname, source_p->name);
816
817 assert(to != source_p); /* should be already removed from serv_list */
818
819 /* If this server can handle quit storm (QS) removal
820 * of dependents, just send the SQUIT
821 *
822 * Always check *all* dependent servers if some of them are
823 * hidden behind fakename. If so, send out the QUITs -adx
824 */
825 if (hidden || !IsCapable(to, CAP_QS))
826 DLINK_FOREACH_SAFE(ptr, next, source_p->serv->users.head)
827 {
828 target_p = ptr->data;
829 sendto_one(to, ":%s QUIT :%s", target_p->name, splitstr);
830 }
831
832 DLINK_FOREACH_SAFE(ptr, next, source_p->serv->servers.head)
833 recurse_send_quits(original_source_p, ptr->data, from, to,
834 comment, splitstr, myname);
835
836 if (!hidden && ((source_p == original_source_p && to != from) ||
837 !IsCapable(to, CAP_QS)))
838 {
839 /* don't use a prefix here - we have to be 100% sure the message
840 * will be accepted without Unknown prefix etc.. */
841 sendto_one(to, "SQUIT %s :%s", ID_or_name(source_p, to), comment);
842 }
843 }
844
845 /*
846 * Remove all clients that depend on source_p; assumes all (S)QUITs have
847 * already been sent. we make sure to exit a server's dependent clients
848 * and servers before the server itself; exit_one_client takes care of
849 * actually removing things off llists. tweaked from +CSr31 -orabidoo
850 */
851 static void
852 recurse_remove_clients(struct Client *source_p, const char *quitmsg)
853 {
854 dlink_node *ptr, *next;
855
856 DLINK_FOREACH_SAFE(ptr, next, source_p->serv->users.head)
857 exit_one_client(ptr->data, quitmsg);
858
859 DLINK_FOREACH_SAFE(ptr, next, source_p->serv->servers.head)
860 {
861 recurse_remove_clients(ptr->data, quitmsg);
862 exit_one_client(ptr->data, quitmsg);
863 }
864
865 assert(source_p->serv->dep_servers == 1);
866 assert(source_p->serv->dep_users == 0);
867 }
868
869 /*
870 ** Remove *everything* that depends on source_p, from all lists, and sending
871 ** all necessary QUITs and SQUITs. source_p itself is still on the lists,
872 ** and its SQUITs have been sent except for the upstream one -orabidoo
873 */
874 static void
875 remove_dependents(struct Client *source_p, struct Client *from,
876 const char *comment, const char *splitstr)
877 {
878 struct Client *to;
879 struct ConfItem *conf;
880 struct AccessItem *aconf;
881 static char myname[HOSTLEN+1];
882 dlink_node *ptr;
883
884 DLINK_FOREACH(ptr, serv_list.head)
885 {
886 to = ptr->data;
887
888 if ((conf = to->serv->sconf) != NULL)
889 {
890 aconf = &conf->conf.AccessItem;
891 strlcpy(myname, my_name_for_link(aconf), sizeof(myname));
892 }
893 else
894 strlcpy(myname, me.name, sizeof(myname));
895 recurse_send_quits(source_p, source_p, from, to,
896 comment, splitstr, myname);
897 }
898
899 recurse_remove_clients(source_p, splitstr);
900 }
901
902 /*
903 * exit_client - exit a client of any type. Generally, you can use
904 * this on any struct Client, regardless of its state.
905 *
906 * Note, you shouldn't exit remote _users_ without first doing
907 * SetKilled and propagating a kill or similar message. However,
908 * it is perfectly correct to call exit_client to force a _server_
909 * quit (either local or remote one).
910 *
911 * inputs: - a client pointer that is going to be exited
912 * - for servers, the second argument is a pointer to who
913 * is firing the server. This side won't get any generated
914 * messages. NEVER NULL!
915 * output: none
916 * side effects: the client is delinked from all lists, disconnected,
917 * and the rest of IRC network is notified of the exit.
918 * Client memory is scheduled to be freed
919 */
920 void
921 exit_client(struct Client *source_p, struct Client *from, const char *comment)
922 {
923 dlink_node *m;
924
925 if (MyConnect(source_p))
926 {
927 /* DO NOT REMOVE. exit_client can be called twice after a failed
928 * read/write.
929 */
930 if (IsClosing(source_p))
931 return;
932
933 SetClosing(source_p);
934
935 if (IsIpHash(source_p))
936 remove_one_ip(&source_p->localClient->ip);
937
938 delete_auth(source_p);
939
940 /* This source_p could have status of one of STAT_UNKNOWN, STAT_CONNECTING
941 * STAT_HANDSHAKE or STAT_UNKNOWN
942 * all of which are lumped together into unknown_list
943 *
944 * In all above cases IsRegistered() will not be true.
945 */
946 if (!IsRegistered(source_p))
947 {
948 if ((m = dlinkFindDelete(&unknown_list, source_p)) != NULL)
949 free_dlink_node(m);
950 }
951 else if (IsClient(source_p))
952 {
953 Count.local--;
954
955 if (IsOper(source_p))
956 {
957 if ((m = dlinkFindDelete(&oper_list, source_p)) != NULL)
958 free_dlink_node(m);
959 }
960
961 dlinkDelete(&source_p->localClient->lclient_node, &local_client_list);
962 if (source_p->localClient->list_task != NULL)
963 free_list_task(source_p->localClient->list_task, source_p);
964 hash_del_watch_list(source_p);
965 sendto_realops_flags(UMODE_CCONN, L_ALL, "Client exiting: %s (%s@%s) [%s] [%s]",
966 source_p->name, source_p->username, source_p->host, comment,
967 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
968 "255.255.255.255" : source_p->sockhost);
969 }
970
971 /* As soon as a client is known to be a server of some sort
972 * it has to be put on the serv_list, or SJOIN's to this new server
973 * from the connect burst will not be seen.
974 */
975 if (IsServer(source_p) || IsConnecting(source_p) ||
976 IsHandshake(source_p))
977 {
978 if ((m = dlinkFindDelete(&serv_list, source_p)) != NULL)
979 {
980 free_dlink_node(m);
981 unset_chcap_usage_counts(source_p);
982 }
983
984 if (IsServer(source_p))
985 {
986 Count.myserver--;
987 if (ServerInfo.hub)
988 remove_lazylink_flags(source_p->localClient->serverMask);
989 else
990 uplink = NULL;
991 }
992 }
993
994 log_user_exit(source_p);
995
996 if (!IsDead(source_p))
997 {
998 if (IsServer(source_p))
999 {
1000 /* for them, we are exiting the network */
1001 sendto_one(source_p, ":%s SQUIT %s :%s",
1002 ID_or_name(from, source_p), me.name, comment);
1003 }
1004
1005 sendto_one(source_p, "ERROR :Closing Link: %s (%s)",
1006 source_p->host, comment);
1007 }
1008
1009 /*
1010 ** Currently only server connections can have
1011 ** depending remote clients here, but it does no
1012 ** harm to check for all local clients. In
1013 ** future some other clients than servers might
1014 ** have remotes too...
1015 **
1016 ** Close the Client connection first and mark it
1017 ** so that no messages are attempted to send to it.
1018 ** Remember it makes source_p->from == NULL.
1019 */
1020 close_connection(source_p);
1021 }
1022
1023 if (IsServer(source_p))
1024 {
1025 char splitstr[HOSTLEN + HOSTLEN + 2];
1026
1027 /* This shouldn't ever happen */
1028 assert(source_p->serv != NULL && source_p->servptr != NULL);
1029
1030 if (ConfigServerHide.hide_servers)
1031 /* set netsplit message to "*.net *.split" to still show
1032 * that its a split, but hide the servers splitting
1033 */
1034 strcpy(splitstr, "*.net *.split");
1035 else
1036 snprintf(splitstr, sizeof(splitstr), "%s %s",
1037 source_p->servptr->name, source_p->name);
1038
1039 remove_dependents(source_p, from->from, comment, splitstr);
1040
1041 if (source_p->servptr == &me)
1042 {
1043 sendto_realops_flags(UMODE_ALL, L_ALL,
1044 "%s was connected for %d seconds. %llu/%llu sendK/recvK.",
1045 source_p->name, (int)(CurrentTime - source_p->firsttime),
1046 source_p->localClient->send.bytes >> 10,
1047 source_p->localClient->recv.bytes >> 10);
1048 ilog(L_NOTICE, "%s was connected for %d seconds. %llu/%llu sendK/recvK.",
1049 source_p->name, (int)(CurrentTime - source_p->firsttime),
1050 source_p->localClient->send.bytes >> 10,
1051 source_p->localClient->recv.bytes >> 10);
1052 }
1053 }
1054 else if (IsClient(source_p) && !IsKilled(source_p))
1055 {
1056 sendto_server(NULL, source_p, NULL, CAP_TS6, NOCAPS, NOFLAGS,
1057 ":%s QUIT :%s", ID(source_p), comment);
1058 sendto_server(NULL, source_p, NULL, NOCAPS, CAP_TS6, NOFLAGS,
1059 ":%s QUIT :%s", source_p->name, comment);
1060 }
1061
1062 /* The client *better* be off all of the lists */
1063 assert(dlinkFind(&unknown_list, source_p) == NULL);
1064 assert(dlinkFind(&local_client_list, source_p) == NULL);
1065 assert(dlinkFind(&serv_list, source_p) == NULL);
1066 assert(dlinkFind(&oper_list, source_p) == NULL);
1067
1068 exit_one_client(source_p, comment);
1069 }
1070
1071 /*
1072 * close_connection
1073 * Close the physical connection. This function must make
1074 * MyConnect(client_p) == FALSE, and set client_p->from == NULL.
1075 */
1076 static void
1077 close_connection(struct Client *client_p)
1078 {
1079 struct ConfItem *conf;
1080 struct AccessItem *aconf;
1081 struct ClassItem *aclass;
1082
1083 assert(NULL != client_p);
1084
1085 if (IsServer(client_p))
1086 {
1087 ServerStats->is_sv++;
1088 ServerStats->is_sbs += client_p->localClient->send.bytes;
1089 ServerStats->is_sbr += client_p->localClient->recv.bytes;
1090 ServerStats->is_sti += CurrentTime - client_p->firsttime;
1091
1092 /* XXX Does this even make any sense at all anymore?
1093 * scheduling a 'quick' reconnect could cause a pile of
1094 * nick collides under TSora protocol... -db
1095 */
1096 /*
1097 * If the connection has been up for a long amount of time, schedule
1098 * a 'quick' reconnect, else reset the next-connect cycle.
1099 */
1100 if ((conf = find_exact_name_conf(SERVER_TYPE,
1101 client_p->name, client_p->username,
1102 client_p->host)))
1103 {
1104 /*
1105 * Reschedule a faster reconnect, if this was a automatically
1106 * connected configuration entry. (Note that if we have had
1107 * a rehash in between, the status has been changed to
1108 * CONF_ILLEGAL). But only do this if it was a "good" link.
1109 */
1110 aconf = &conf->conf.AccessItem;
1111 aclass = &((struct ConfItem *)aconf->class_ptr)->conf.ClassItem;
1112 aconf->hold = time(NULL);
1113 aconf->hold += (aconf->hold - client_p->since > HANGONGOODLINK) ?
1114 HANGONRETRYDELAY : ConFreq(aclass);
1115 if (nextconnect > aconf->hold)
1116 nextconnect = aconf->hold;
1117 }
1118 }
1119 else if (IsClient(client_p))
1120 {
1121 ServerStats->is_cl++;
1122 ServerStats->is_cbs += client_p->localClient->send.bytes;
1123 ServerStats->is_cbr += client_p->localClient->recv.bytes;
1124 ServerStats->is_cti += CurrentTime - client_p->firsttime;
1125 }
1126 else
1127 ServerStats->is_ni++;
1128
1129 if (!IsDead(client_p))
1130 {
1131 /* attempt to flush any pending dbufs. Evil, but .. -- adrian */
1132 /* there is still a chance that we might send data to this socket
1133 * even if it is marked as blocked (COMM_SELECT_READ handler is called
1134 * before COMM_SELECT_WRITE). Let's try, nothing to lose.. -adx
1135 */
1136 ClearSendqBlocked(client_p);
1137 send_queued_write(client_p);
1138 }
1139
1140 #ifdef HAVE_LIBCRYPTO
1141 if (client_p->localClient->fd.ssl)
1142 SSL_shutdown(client_p->localClient->fd.ssl);
1143 #endif
1144 if (client_p->localClient->fd.flags.open)
1145 fd_close(&client_p->localClient->fd);
1146
1147 if (HasServlink(client_p))
1148 {
1149 if (client_p->localClient->ctrlfd.flags.open)
1150 fd_close(&client_p->localClient->ctrlfd);
1151 }
1152
1153 dbuf_clear(&client_p->localClient->buf_sendq);
1154 dbuf_clear(&client_p->localClient->buf_recvq);
1155
1156 MyFree(client_p->localClient->passwd);
1157 detach_conf(client_p, CONF_TYPE);
1158 client_p->from = NULL; /* ...this should catch them! >:) --msa */
1159 }
1160
1161 /*
1162 * report_error - report an error from an errno.
1163 * Record error to log and also send a copy to all *LOCAL* opers online.
1164 *
1165 * text is a *format* string for outputing error. It must
1166 * contain only two '%s', the first will be replaced
1167 * by the sockhost from the client_p, and the latter will
1168 * be taken from sys_errlist[errno].
1169 *
1170 * client_p if not NULL, is the *LOCAL* client associated with
1171 * the error.
1172 *
1173 * Cannot use perror() within daemon. stderr is closed in
1174 * ircd and cannot be used. And, worse yet, it might have
1175 * been reassigned to a normal connection...
1176 *
1177 * Actually stderr is still there IFF ircd was run with -s --Rodder
1178 */
1179 void
1180 report_error(int level, const char *text, const char *who, int error)
1181 {
1182 who = (who != NULL) ? who : "";
1183
1184 sendto_realops_flags(UMODE_DEBUG, level, text, who, strerror(error));
1185 log_oper_action(LOG_IOERR_TYPE, NULL, "%s %s %s\n", who, text, strerror(error));
1186 ilog(L_ERROR, text, who, strerror(error));
1187 }
1188
1189 /*
1190 * dead_link_on_write - report a write error if not already dead,
1191 * mark it as dead then exit it
1192 */
1193 void
1194 dead_link_on_write(struct Client *client_p, int ierrno)
1195 {
1196 dlink_node *ptr;
1197
1198 if (IsDefunct(client_p))
1199 return;
1200
1201 dbuf_clear(&client_p->localClient->buf_recvq);
1202 dbuf_clear(&client_p->localClient->buf_sendq);
1203
1204 assert(dlinkFind(&abort_list, client_p) == NULL);
1205 ptr = make_dlink_node();
1206 /* don't let exit_aborted_clients() finish yet */
1207 dlinkAddTail(client_p, ptr, &abort_list);
1208
1209 if (eac_next == NULL)
1210 eac_next = ptr;
1211
1212 SetDead(client_p); /* You are dead my friend */
1213 }
1214
1215 /*
1216 * dead_link_on_read - report a read error if not already dead,
1217 * mark it as dead then exit it
1218 */
1219 void
1220 dead_link_on_read(struct Client *client_p, int error)
1221 {
1222 char errmsg[255];
1223 int current_error;
1224
1225 if (IsDefunct(client_p))
1226 return;
1227
1228 dbuf_clear(&client_p->localClient->buf_recvq);
1229 dbuf_clear(&client_p->localClient->buf_sendq);
1230
1231 current_error = get_sockerr(client_p->localClient->fd.fd);
1232
1233 if (IsServer(client_p) || IsHandshake(client_p))
1234 {
1235 int connected = CurrentTime - client_p->firsttime;
1236
1237 if (error == 0)
1238 {
1239 /* Admins get the real IP */
1240 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1241 "Server %s closed the connection",
1242 get_client_name(client_p, SHOW_IP));
1243
1244 /* Opers get a masked IP */
1245 sendto_realops_flags(UMODE_ALL, L_OPER,
1246 "Server %s closed the connection",
1247 get_client_name(client_p, MASK_IP));
1248
1249 ilog(L_NOTICE, "Server %s closed the connection",
1250 get_client_name(client_p, SHOW_IP));
1251 }
1252 else
1253 {
1254 report_error(L_ADMIN, "Lost connection to %s: %d",
1255 get_client_name(client_p, SHOW_IP), current_error);
1256 report_error(L_OPER, "Lost connection to %s: %d",
1257 get_client_name(client_p, MASK_IP), current_error);
1258 }
1259
1260 sendto_realops_flags(UMODE_ALL, L_ALL,
1261 "%s had been connected for %d day%s, %2d:%02d:%02d",
1262 client_p->name, connected/86400,
1263 (connected/86400 == 1) ? "" : "s",
1264 (connected % 86400) / 3600, (connected % 3600) / 60,
1265 connected % 60);
1266 }
1267
1268 if (error == 0)
1269 strlcpy(errmsg, "Remote host closed the connection",
1270 sizeof(errmsg));
1271 else
1272 ircsprintf(errmsg, "Read error: %s",
1273 strerror(current_error));
1274
1275 exit_client(client_p, &me, errmsg);
1276 }
1277
1278 void
1279 exit_aborted_clients(void)
1280 {
1281 dlink_node *ptr;
1282 struct Client *target_p;
1283 const char *notice;
1284
1285 DLINK_FOREACH_SAFE(ptr, eac_next, abort_list.head)
1286 {
1287 target_p = ptr->data;
1288 eac_next = ptr->next;
1289
1290 if (target_p == NULL)
1291 {
1292 sendto_realops_flags(UMODE_ALL, L_ALL,
1293 "Warning: null client on abort_list!");
1294 dlinkDelete(ptr, &abort_list);
1295 free_dlink_node(ptr);
1296 continue;
1297 }
1298
1299 dlinkDelete(ptr, &abort_list);
1300
1301 if (IsSendQExceeded(target_p))
1302 notice = "Max SendQ exceeded";
1303 else
1304 notice = "Write error: connection closed";
1305
1306 exit_client(target_p, &me, notice);
1307 free_dlink_node(ptr);
1308 }
1309 }
1310
1311 /*
1312 * accept processing, this adds a form of "caller ID" to ircd
1313 *
1314 * If a client puts themselves into "caller ID only" mode,
1315 * only clients that match a client pointer they have put on
1316 * the accept list will be allowed to message them.
1317 *
1318 * Diane Bruce, "Dianora" db@db.net
1319 */
1320
1321 void
1322 del_accept(struct Accept *accept, struct Client *client_p)
1323 {
1324 dlinkDelete(ptr, &client_p->localClient->acceptlist);
1325
1326 MyFree(accept->nick);
1327 MyFree(accept->user);
1328 MyFree(accept->host);
1329 MyFree(accept);
1330 }
1331
1332 struct Accept *
1333 find_accept(const char *nick, const char *user,
1334 const char *host, struct Client *client_p, int do_match)
1335 {
1336 dlink_node *ptr = NULL;
1337 /* XXX We wouldn't need that if match() would return 0 on match */
1338 int (*cmpfunc)(const char *, const char *) = do_match ? match : irccmp;
1339
1340 DLINK_FOREACH(ptr, client_p->localClient->acceptlist.head)
1341 {
1342 struct Accept *accept = ptr->data;
1343
1344 if (cmpfunc(accept->nick, nick) == do_match &&
1345 cmpfunc(accept->user, user) == do_match &&
1346 cmpfunc(accept->host, host) == do_match)
1347 return accept;
1348 }
1349
1350 return NULL;
1351 }
1352
1353 /* accept_message()
1354 *
1355 * inputs - pointer to nick
1356 * - pointer to username
1357 * - pointer to hostname
1358 * - pointer to source client
1359 * - pointer to target client
1360 * output - 1 if accept this message 0 if not
1361 * side effects - See if source is on target's allow list
1362 */
1363 int
1364 accept_message(struct Client *source,
1365 struct Client *target)
1366 {
1367 dlink_node *ptr = NULL;
1368
1369 if (source == target || find_accept(source_p->name, source_p->username,
1370 source_p->host, target, 1))
1371 return 1;
1372
1373 if (IsSoftCallerId(target))
1374 DLINK_FOREACH(ptr, target->channel.head)
1375 if (IsMember(source, ptr->data))
1376 return 1;
1377
1378 return 0;
1379 }
1380
1381 /* del_all_accepts()
1382 *
1383 * inputs - pointer to exiting client
1384 * output - NONE
1385 * side effects - Walk through given clients acceptlist and remove all entries
1386 */
1387 void
1388 del_all_accepts(struct Client *client_p)
1389 {
1390 dlink_node *ptr = NULL, *next_ptr = NULL;
1391
1392 DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->acceptlist.head)
1393 del_accept(ptr->data, client_p);
1394 }
1395
1396 /* set_initial_nick()
1397 *
1398 * inputs
1399 * output
1400 * side effects -
1401 *
1402 * This function is only called to set up an initially registering
1403 * client.
1404 */
1405 void
1406 set_initial_nick(struct Client *client_p, struct Client *source_p,
1407 const char *nick)
1408 {
1409 char buf[USERLEN + 1];
1410
1411 /* Client setting NICK the first time */
1412
1413 /* This had to be copied here to avoid problems.. */
1414 source_p->tsinfo = CurrentTime;
1415
1416 if (source_p->name[0])
1417 hash_del_client(source_p);
1418
1419 strlcpy(source_p->name, nick, sizeof(source_p->name));
1420 hash_add_client(source_p);
1421
1422 /* fd_desc is long enough */
1423 fd_note(&client_p->localClient->fd, "Nick: %s", nick);
1424
1425 /* They have the nick they want now.. */
1426 client_p->localClient->llname[0] = '\0';
1427
1428 if (source_p->flags & FLAGS_GOTUSER)
1429 {
1430 strlcpy(buf, source_p->username, sizeof(buf));
1431
1432 /*
1433 * USER already received, now we have NICK.
1434 * *NOTE* For servers "NICK" *must* precede the
1435 * user message (giving USER before NICK is possible
1436 * only for local client connection!). register_user
1437 * may reject the client and call exit_client for it
1438 * --must test this and exit m_nick too!!!
1439 */
1440 register_local_user(client_p, source_p, nick, buf);
1441 }
1442 }
1443
1444 /* change_local_nick()
1445 *
1446 * inputs - pointer to server
1447 * - pointer to client
1448 * - nick
1449 * output -
1450 * side effects - changes nick of a LOCAL user
1451 */
1452 void
1453 change_local_nick(struct Client *client_p, struct Client *source_p, const char *nick)
1454 {
1455 int samenick = 0;
1456 /*
1457 ** Client just changing his/her nick. If he/she is
1458 ** on a channel, send note of change to all clients
1459 ** on that channel. Propagate notice to other servers.
1460 */
1461 if ((source_p->localClient->last_nick_change +
1462 ConfigFileEntry.max_nick_time) < CurrentTime)
1463 source_p->localClient->number_of_nick_changes = 0;
1464 source_p->localClient->last_nick_change = CurrentTime;
1465 source_p->localClient->number_of_nick_changes++;
1466
1467 if ((ConfigFileEntry.anti_nick_flood &&
1468 (source_p->localClient->number_of_nick_changes
1469 <= ConfigFileEntry.max_nick_changes)) ||
1470 !ConfigFileEntry.anti_nick_flood ||
1471 (IsOper(source_p) && ConfigFileEntry.no_oper_flood))
1472 {
1473 samenick = !irccmp(source_p->name, nick);
1474 if (!samenick)
1475 source_p->tsinfo = CurrentTime;
1476
1477 /* XXX - the format of this notice should eventually be changed
1478 * to either %s[%s@%s], or even better would be get_client_name() -bill
1479 */
1480 sendto_realops_flags(UMODE_NCHANGE, L_ALL, "Nick change: From %s to %s [%s@%s]",
1481 source_p->name, nick, source_p->username, source_p->host);
1482 sendto_common_channels_local(source_p, 1, ":%s!%s@%s NICK :%s",
1483 source_p->name, source_p->username,
1484 source_p->host, nick);
1485
1486 add_history(source_p, 1);
1487
1488 /* Only hubs care about lazy link nicks not being sent on yet
1489 * lazylink leafs/leafs always send their nicks up to hub,
1490 * hence must always propagate nick changes.
1491 * hubs might not propagate a nick change, if the leaf
1492 * does not know about that client yet.
1493 */
1494 sendto_server(client_p, source_p, NULL, CAP_TS6, NOCAPS, NOFLAGS,
1495 ":%s NICK %s :%lu",
1496 ID(source_p), nick, (unsigned long)source_p->tsinfo);
1497 sendto_server(client_p, source_p, NULL, NOCAPS, CAP_TS6, NOFLAGS,
1498 ":%s NICK %s :%lu",
1499 source_p->name, nick, (unsigned long)source_p->tsinfo);
1500 }
1501 else
1502 {
1503 sendto_one(source_p, form_str(ERR_NICKTOOFAST),
1504 me.name, source_p->name, source_p->name,
1505 nick, ConfigFileEntry.max_nick_time);
1506 return;
1507 }
1508
1509 /* Finally, add to hash */
1510 assert(source_p->name[0]);
1511
1512 hash_del_client(source_p);
1513 if (!samenick)
1514 hash_check_watch(source_p, RPL_LOGOFF);
1515 strcpy(source_p->name, nick);
1516 hash_add_client(source_p);
1517
1518 if (!samenick)
1519 hash_check_watch(source_p, RPL_LOGON);
1520
1521 /* fd_desc is long enough */
1522 fd_note(&client_p->localClient->fd, "Nick: %s", nick);
1523 }
1524
1525 /* log_user_exit()
1526 *
1527 * inputs - pointer to connecting client
1528 * output - NONE
1529 * side effects - Current exiting client is logged to
1530 * either SYSLOG or to file.
1531 */
1532 void
1533 log_user_exit(struct Client *source_p)
1534 {
1535 time_t on_for = CurrentTime - source_p->firsttime;
1536 #ifdef SYSLOG_USERS
1537 if (IsClient(source_p))
1538 {
1539 ilog(L_INFO, "%s (%3ld:%02ld:%02ld): %s!%s@%s %llu/%llu\n",
1540 myctime(source_p->firsttime),
1541 (signed long) on_for / 3600,
1542 (signed long) (on_for % 3600)/60,
1543 (signed long) on_for % 60,
1544 source_p->name, source_p->username, source_p->host,
1545 source_p->localClient->send.bytes>>10,
1546 source_p->localClient->recv.bytes>>10);
1547 }
1548 #else
1549 {
1550 char linebuf[BUFSIZ];
1551
1552 /*
1553 * This conditional makes the logfile active only after
1554 * it's been created - thus logging can be turned off by
1555 * removing the file.
1556 * -Taner
1557 */
1558 if (IsClient(source_p))
1559 {
1560 if (user_log_fb == NULL)
1561 {
1562 if ((ConfigLoggingEntry.userlog[0] != '\0') &&
1563 (user_log_fb = fbopen(ConfigLoggingEntry.userlog, "r")) != NULL)
1564 {
1565 fbclose(user_log_fb);
1566 user_log_fb = fbopen(ConfigLoggingEntry.userlog, "a");
1567 }
1568 }
1569
1570 if (user_log_fb != NULL)
1571 {
1572 size_t nbytes = ircsprintf(linebuf,
1573 "%s (%3ld:%02ld:%02ld): %s!%s@%s %llu/%llu\n",
1574 myctime(source_p->firsttime),
1575 (signed long) on_for / 3600,
1576 (signed long) (on_for % 3600)/60,
1577 (signed long) on_for % 60,
1578 source_p->name, source_p->username, source_p->host,
1579 source_p->localClient->send.bytes>>10,
1580 source_p->localClient->recv.bytes>>10);
1581 fbputs(linebuf, user_log_fb, nbytes);
1582 }
1583 }
1584 }
1585 #endif
1586 }
1587
1588
1589 /* log_oper_action()
1590 *
1591 * inputs - type of oper log entry
1592 * - pointer to oper
1593 * - const char *pattern == format string
1594 * - var args for format string
1595 * output - none
1596 * side effects - corresponding log is written to, if its present.
1597 *
1598 * rewritten sept 5 2005 - Dianora
1599 */
1600 void
1601 log_oper_action(int log_type, const struct Client *source_p,
1602 const char *pattern, ...)
1603 {
1604 va_list args;
1605 char linebuf[IRCD_BUFSIZE];
1606 FBFILE *log_fb;
1607 char *logfile;
1608 const char *log_message;
1609 size_t nbytes;
1610 size_t n_preamble;
1611 char *p;
1612
1613 switch(log_type)
1614 {
1615 case LOG_OPER_TYPE:
1616 logfile = ConfigLoggingEntry.operlog;
1617 log_message = "OPER";
1618 break;
1619 case LOG_FAILED_OPER_TYPE:
1620 logfile = ConfigLoggingEntry.failed_operlog;
1621 log_message = "FAILED OPER";
1622 break;
1623 case LOG_KLINE_TYPE:
1624 logfile = ConfigLoggingEntry.klinelog;
1625 log_message = "KLINE";
1626 break;
1627 case LOG_RKLINE_TYPE:
1628 logfile = ConfigLoggingEntry.klinelog;
1629 log_message = "RKLINE";
1630 break;
1631 case LOG_DLINE_TYPE:
1632 logfile = ConfigLoggingEntry.klinelog;
1633 log_message = "DLINE";
1634 break;
1635 case LOG_TEMP_DLINE_TYPE:
1636 logfile = ConfigLoggingEntry.klinelog;
1637 log_message = "TEMP DLINE";
1638 break;
1639 case LOG_TEMP_KLINE_TYPE:
1640 logfile = ConfigLoggingEntry.klinelog;
1641 log_message = "TEMP KLINE";
1642 break;
1643 case LOG_GLINE_TYPE:
1644 logfile = ConfigLoggingEntry.glinelog;
1645 log_message = "GLINE";
1646 break;
1647 case LOG_KILL_TYPE:
1648 logfile = ConfigLoggingEntry.killlog;
1649 log_message = "KILL";
1650 break;
1651 case LOG_IOERR_TYPE:
1652 logfile = ConfigLoggingEntry.ioerrlog;
1653 log_message = "IO ERR";
1654 break;
1655 default:
1656 return;
1657 }
1658
1659 if (*logfile == '\0')
1660 return;
1661
1662 p = linebuf;
1663 if (source_p != NULL)
1664 {
1665 n_preamble = ircsprintf(linebuf, "%s %s by (%s!%s@%s) :",
1666 myctime(CurrentTime), log_message,
1667 source_p->name, source_p->username, source_p->host);
1668
1669 }
1670 else
1671 {
1672 n_preamble = ircsprintf(linebuf, "%s %s :",
1673 myctime(CurrentTime), log_message);
1674 }
1675
1676 p += n_preamble;
1677
1678 if ((log_fb = fbopen(logfile, "r")) != NULL)
1679 {
1680 fbclose(log_fb);
1681 log_fb = fbopen(logfile, "a");
1682 if (log_fb == NULL)
1683 return;
1684 va_start(args, pattern);
1685 /* XXX add check for IRCD_BUFSIZE-(n_preamble+1) < 0 ? -db */
1686 nbytes = vsnprintf(p, IRCD_BUFSIZE-(n_preamble+1), pattern, args);
1687 nbytes += n_preamble;
1688 va_end(args);
1689 fbputs(linebuf, log_fb, nbytes);
1690 fbclose(log_fb);
1691 }
1692 }

Properties

Name Value
svn:eol-style native
svn:keywords Id Revision