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root/svn/ircd-hybrid/branches/8.2.x/src/client.c
Revision: 3289
Committed: Wed Apr 9 19:50:19 2014 UTC (9 years, 11 months ago) by michael
Content type: text/x-csrc
Original Path: ircd-hybrid/trunk/src/client.c
File size: 33046 byte(s)
Log Message:
- Made free_list_task() only take one parameter

File Contents

# Content
1 /*
2 * ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3 *
4 * Copyright (c) 1997-2014 ircd-hybrid development team
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19 * USA
20 */
21
22 /*! \file client.c
23 * \brief Controls clients.
24 * \version $Id$
25 */
26
27 #include "stdinc.h"
28 #include "list.h"
29 #include "client.h"
30 #include "event.h"
31 #include "hash.h"
32 #include "irc_string.h"
33 #include "ircd.h"
34 #include "numeric.h"
35 #include "s_auth.h"
36 #include "s_bsd.h"
37 #include "conf.h"
38 #include "log.h"
39 #include "s_misc.h"
40 #include "s_serv.h"
41 #include "send.h"
42 #include "whowas.h"
43 #include "s_user.h"
44 #include "memory.h"
45 #include "mempool.h"
46 #include "hostmask.h"
47 #include "listener.h"
48 #include "userhost.h"
49 #include "watch.h"
50 #include "rng_mt.h"
51 #include "parse.h"
52
53 dlink_list listing_client_list = { NULL, NULL, 0 };
54 /* Pointer to beginning of Client list */
55 dlink_list global_client_list = {NULL, NULL, 0};
56 /* unknown/client pointer lists */
57 dlink_list unknown_list = {NULL, NULL, 0};
58 dlink_list local_client_list = {NULL, NULL, 0};
59 dlink_list serv_list = {NULL, NULL, 0};
60 dlink_list global_serv_list = {NULL, NULL, 0};
61 dlink_list oper_list = {NULL, NULL, 0};
62
63 static EVH check_pings;
64
65 static mp_pool_t *client_pool = NULL;
66 static mp_pool_t *lclient_pool = NULL;
67
68 static dlink_list dead_list = { NULL, NULL, 0};
69 static dlink_list abort_list = { NULL, NULL, 0};
70
71 static dlink_node *eac_next; /* next aborted client to exit */
72
73 static void check_pings_list(dlink_list *);
74 static void check_unknowns_list(void);
75
76
77 /* client_init()
78 *
79 * inputs - NONE
80 * output - NONE
81 * side effects - initialize client free memory
82 */
83 void
84 client_init(void)
85 {
86 /* start off the check ping event .. -- adrian
87 * Every 30 seconds is plenty -- db
88 */
89 client_pool = mp_pool_new(sizeof(struct Client), MP_CHUNK_SIZE_CLIENT);
90 lclient_pool = mp_pool_new(sizeof(struct LocalUser), MP_CHUNK_SIZE_LCLIENT);
91 eventAdd("check_pings", check_pings, NULL, 5);
92 }
93
94 /*
95 * make_client - create a new Client struct and set it to initial state.
96 *
97 * from == NULL, create local client (a client connected
98 * to a socket).
99 * WARNING: This leaves the client in a dangerous
100 * state where fd == -1, dead flag is not set and
101 * the client is on the unknown_list; therefore,
102 * the first thing to do after calling make_client(NULL)
103 * is setting fd to something reasonable. -adx
104 *
105 * from, create remote client (behind a socket
106 * associated with the client defined by
107 * 'from'). ('from' is a local client!!).
108 */
109 struct Client *
110 make_client(struct Client *from)
111 {
112 struct Client *client_p = mp_pool_get(client_pool);
113
114 memset(client_p, 0, sizeof(*client_p));
115
116 if (!from)
117 {
118 client_p->from = client_p; /* 'from' of local client is self! */
119 client_p->localClient = mp_pool_get(lclient_pool);
120
121 memset(client_p->localClient, 0, sizeof(*client_p->localClient));
122
123 client_p->localClient->since = CurrentTime;
124 client_p->localClient->lasttime = CurrentTime;
125 client_p->localClient->firsttime = CurrentTime;
126 client_p->localClient->registration = REG_INIT;
127
128 /* as good a place as any... */
129 dlinkAdd(client_p, &client_p->localClient->lclient_node, &unknown_list);
130 }
131 else
132 client_p->from = from; /* 'from' of local client is self! */
133
134 client_p->idhnext = client_p;
135 client_p->hnext = client_p;
136 SetUnknown(client_p);
137 strcpy(client_p->username, "unknown");
138 strcpy(client_p->svid, "0");
139
140 return client_p;
141 }
142
143 /*
144 * free_client
145 *
146 * inputs - pointer to client
147 * output - NONE
148 * side effects - client pointed to has its memory freed
149 */
150 static void
151 free_client(struct Client *client_p)
152 {
153 assert(client_p);
154 assert(client_p != &me);
155 assert(client_p->hnext == client_p);
156 assert(client_p->idhnext == client_p);
157 assert(client_p->channel.head == NULL);
158 assert(dlink_list_length(&client_p->channel) == 0);
159 assert(dlink_list_length(&client_p->whowas) == 0);
160 assert(!IsServer(client_p) || (IsServer(client_p) && client_p->serv));
161
162 MyFree(client_p->serv);
163 MyFree(client_p->certfp);
164
165 if (MyConnect(client_p))
166 {
167 assert(client_p->localClient->invited.head == NULL);
168 assert(dlink_list_length(&client_p->localClient->invited) == 0);
169 assert(dlink_list_length(&client_p->localClient->watches) == 0);
170 assert(IsClosing(client_p) && IsDead(client_p));
171
172 MyFree(client_p->localClient->response);
173 MyFree(client_p->localClient->auth_oper);
174
175 /*
176 * clean up extra sockets from P-lines which have been discarded.
177 */
178 if (client_p->localClient->listener)
179 {
180 assert(0 < client_p->localClient->listener->ref_count);
181 if (0 == --client_p->localClient->listener->ref_count &&
182 !client_p->localClient->listener->active)
183 free_listener(client_p->localClient->listener);
184 }
185
186 dbuf_clear(&client_p->localClient->buf_recvq);
187 dbuf_clear(&client_p->localClient->buf_sendq);
188
189 mp_pool_release(client_p->localClient);
190 }
191
192 mp_pool_release(client_p);
193 }
194
195 /*
196 * check_pings - go through the local client list and check activity
197 * kill off stuff that should die
198 *
199 * inputs - NOT USED (from event)
200 * output - next time_t when check_pings() should be called again
201 * side effects -
202 *
203 *
204 * A PING can be sent to clients as necessary.
205 *
206 * Client/Server ping outs are handled.
207 */
208
209 /*
210 * Addon from adrian. We used to call this after nextping seconds,
211 * however I've changed it to run once a second. This is only for
212 * PING timeouts, not K/etc-line checks (thanks dianora!). Having it
213 * run once a second makes life a lot easier - when a new client connects
214 * and they need a ping in 4 seconds, if nextping was set to 20 seconds
215 * we end up waiting 20 seconds. This is stupid. :-)
216 * I will optimise (hah!) check_pings() once I've finished working on
217 * tidying up other network IO evilnesses.
218 * -- adrian
219 */
220
221 static void
222 check_pings(void *notused)
223 {
224 check_pings_list(&local_client_list);
225 check_pings_list(&serv_list);
226 check_unknowns_list();
227 }
228
229 /* check_pings_list()
230 *
231 * inputs - pointer to list to check
232 * output - NONE
233 * side effects -
234 */
235 static void
236 check_pings_list(dlink_list *list)
237 {
238 char scratch[IRCD_BUFSIZE];
239 int ping = 0; /* ping time value from client */
240 dlink_node *ptr = NULL, *next_ptr = NULL;
241
242 DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
243 {
244 struct Client *client_p = ptr->data;
245
246 /*
247 ** Note: No need to notify opers here. It's
248 ** already done when "FLAGS_DEADSOCKET" is set.
249 */
250 if (IsDead(client_p))
251 {
252 /* Ignore it, its been exited already */
253 continue;
254 }
255
256 if (!IsRegistered(client_p))
257 ping = CONNECTTIMEOUT;
258 else
259 ping = get_client_ping(&client_p->localClient->confs);
260
261 if (ping < CurrentTime - client_p->localClient->lasttime)
262 {
263 if (!IsPingSent(client_p))
264 {
265 /*
266 * if we havent PINGed the connection and we havent
267 * heard from it in a while, PING it to make sure
268 * it is still alive.
269 */
270 SetPingSent(client_p);
271 client_p->localClient->lasttime = CurrentTime - ping;
272 sendto_one(client_p, "PING :%s", ID_or_name(&me, client_p));
273 }
274 else
275 {
276 if (CurrentTime - client_p->localClient->lasttime >= 2 * ping)
277 {
278 /*
279 * If the client/server hasn't talked to us in 2*ping seconds
280 * and it has a ping time, then close its connection.
281 */
282 if (IsServer(client_p) || IsHandshake(client_p))
283 {
284 sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
285 "No response from %s, closing link",
286 get_client_name(client_p, HIDE_IP));
287 sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
288 "No response from %s, closing link",
289 get_client_name(client_p, MASK_IP));
290 ilog(LOG_TYPE_IRCD, "No response from %s, closing link",
291 get_client_name(client_p, HIDE_IP));
292 }
293
294 snprintf(scratch, sizeof(scratch), "Ping timeout: %d seconds",
295 (int)(CurrentTime - client_p->localClient->lasttime));
296 exit_client(client_p, scratch);
297 }
298 }
299 }
300 }
301 }
302
303 /* check_unknowns_list()
304 *
305 * inputs - pointer to list of unknown clients
306 * output - NONE
307 * side effects - unknown clients get marked for termination after n seconds
308 */
309 static void
310 check_unknowns_list(void)
311 {
312 dlink_node *ptr = NULL, *ptr_next = NULL;
313
314 DLINK_FOREACH_SAFE(ptr, ptr_next, unknown_list.head)
315 {
316 struct Client *client_p = ptr->data;
317
318 /*
319 * Check UNKNOWN connections - if they have been in this state
320 * for > 30s, close them.
321 */
322 if (IsAuthFinished(client_p) && (CurrentTime - client_p->localClient->firsttime) > 30)
323 exit_client(client_p, "Registration timed out");
324 }
325 }
326
327 /* check_conf_klines()
328 *
329 * inputs - NONE
330 * output - NONE
331 * side effects - Check all connections for a pending kline against the
332 * client, exit the client if a kline matches.
333 */
334 void
335 check_conf_klines(void)
336 {
337 struct Client *client_p = NULL; /* current local client_p being examined */
338 struct MaskItem *conf = NULL;
339 dlink_node *ptr, *next_ptr;
340
341 DLINK_FOREACH_SAFE(ptr, next_ptr, local_client_list.head)
342 {
343 client_p = ptr->data;
344
345 /* If a client is already being exited
346 */
347 if (IsDead(client_p) || !IsClient(client_p))
348 continue;
349
350 if ((conf = find_dline_conf(&client_p->localClient->ip,
351 client_p->localClient->aftype)))
352 {
353 if (conf->type == CONF_EXEMPT)
354 continue;
355
356 conf_try_ban(client_p, conf);
357 continue; /* and go examine next fd/client_p */
358 }
359
360 if (ConfigFileEntry.glines)
361 {
362 if ((conf = find_conf_by_address(client_p->host, &client_p->localClient->ip,
363 CONF_GLINE, client_p->localClient->aftype,
364 client_p->username, NULL, 1)))
365 {
366 conf_try_ban(client_p, conf);
367 /* and go examine next fd/client_p */
368 continue;
369 }
370 }
371
372 if ((conf = find_conf_by_address(client_p->host, &client_p->localClient->ip,
373 CONF_KLINE, client_p->localClient->aftype,
374 client_p->username, NULL, 1)))
375 {
376 conf_try_ban(client_p, conf);
377 continue;
378 }
379
380 if ((conf = find_matching_name_conf(CONF_XLINE, client_p->info,
381 NULL, NULL, 0)))
382 {
383 conf_try_ban(client_p, conf);
384 continue;
385 }
386 }
387
388 /* also check the unknowns list for new dlines */
389 DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head)
390 {
391 client_p = ptr->data;
392
393 if ((conf = find_dline_conf(&client_p->localClient->ip,
394 client_p->localClient->aftype)))
395 {
396 if (conf->type == CONF_EXEMPT)
397 continue;
398
399 exit_client(client_p, "D-lined");
400 }
401 }
402 }
403
404 /*
405 * conf_try_ban
406 *
407 * inputs - pointer to client to ban
408 * - pointer to MaskItem
409 * output - NONE
410 * side effects - given client_p is banned
411 */
412 void
413 conf_try_ban(struct Client *client_p, struct MaskItem *conf)
414 {
415 const char *user_reason = NULL; /* What is sent to user */
416 const char *type_string = NULL;
417 const char dline_string[] = "D-line";
418 const char kline_string[] = "K-line";
419 const char gline_string[] = "G-line";
420 const char xline_string[] = "X-line";
421
422 switch (conf->type)
423 {
424 case CONF_KLINE:
425 if (IsExemptKline(client_p))
426 {
427 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
428 "KLINE over-ruled for %s, client is kline_exempt",
429 get_client_name(client_p, HIDE_IP));
430 return;
431 }
432
433 type_string = kline_string;
434 break;
435 case CONF_DLINE:
436 type_string = dline_string;
437 break;
438 case CONF_GLINE:
439 if (IsExemptKline(client_p) ||
440 IsExemptGline(client_p))
441 {
442 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
443 "GLINE over-ruled for %s, client is %sline_exempt",
444 get_client_name(client_p, HIDE_IP), IsExemptKline(client_p) ? "k" : "g");
445 return;
446 }
447
448 type_string = gline_string;
449 break;
450 case CONF_XLINE:
451 type_string = xline_string;
452 ++conf->count;
453 break;
454 default:
455 assert(0);
456 break;
457 }
458
459 user_reason = conf->reason ? conf->reason : type_string;
460
461 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, "%s active for %s",
462 type_string, get_client_name(client_p, HIDE_IP));
463
464 if (IsClient(client_p))
465 sendto_one_numeric(client_p, &me, ERR_YOUREBANNEDCREEP, user_reason);
466
467 exit_client(client_p, user_reason);
468 }
469
470 /* update_client_exit_stats()
471 *
472 * input - pointer to client
473 * output - NONE
474 * side effects -
475 */
476 static void
477 update_client_exit_stats(struct Client *client_p)
478 {
479 if (IsClient(client_p))
480 {
481 assert(Count.total > 0);
482 --Count.total;
483 if (HasUMode(client_p, UMODE_OPER))
484 --Count.oper;
485 if (HasUMode(client_p, UMODE_INVISIBLE))
486 --Count.invisi;
487 }
488 else if (IsServer(client_p))
489 sendto_realops_flags(UMODE_EXTERNAL, L_ALL, SEND_NOTICE,
490 "Server %s split from %s",
491 client_p->name, client_p->servptr->name);
492
493 if (splitchecking && !splitmode)
494 check_splitmode(NULL);
495 }
496
497 /* find_person()
498 *
499 * inputs - pointer to name
500 * output - return client pointer
501 * side effects - find person by (nick)name
502 */
503 struct Client *
504 find_person(const struct Client *const source_p, const char *name)
505 {
506 struct Client *target_p = NULL;
507
508 if (IsDigit(*name))
509 {
510 if (IsServer(source_p->from))
511 target_p = hash_find_id(name);
512 }
513 else
514 target_p = hash_find_client(name);
515
516 return (target_p && IsClient(target_p)) ? target_p : NULL;
517 }
518
519 /*
520 * find_chasing - find the client structure for a nick name (name)
521 * using history mechanism if necessary. If the client is not found,
522 * an error message (NO SUCH NICK) is generated.
523 */
524 struct Client *
525 find_chasing(struct Client *source_p, const char *name)
526 {
527 struct Client *who = find_person(source_p, name);
528
529 if (who)
530 return who;
531
532 if (IsDigit(*name))
533 return NULL;
534
535 if ((who = whowas_get_history(name,
536 (time_t)ConfigFileEntry.kill_chase_time_limit))
537 == NULL)
538 {
539 sendto_one_numeric(source_p, &me, ERR_NOSUCHNICK, name);
540 return NULL;
541 }
542
543 return who;
544 }
545
546 /*
547 * get_client_name - Return the name of the client
548 * for various tracking and
549 * admin purposes. The main purpose of this function is to
550 * return the "socket host" name of the client, if that
551 * differs from the advertised name (other than case).
552 * But, this can be used to any client structure.
553 *
554 * NOTE 1:
555 * Watch out the allocation of "nbuf", if either source_p->name
556 * or source_p->sockhost gets changed into pointers instead of
557 * directly allocated within the structure...
558 *
559 * NOTE 2:
560 * Function return either a pointer to the structure (source_p) or
561 * to internal buffer (nbuf). *NEVER* use the returned pointer
562 * to modify what it points!!!
563 */
564 const char *
565 get_client_name(const struct Client *client_p, enum addr_mask_type type)
566 {
567 static char nbuf[HOSTLEN * 2 + USERLEN + 5];
568
569 assert(client_p);
570
571 if (!MyConnect(client_p))
572 return client_p->name;
573
574 if (IsServer(client_p) || IsConnecting(client_p) || IsHandshake(client_p))
575 {
576 if (!irccmp(client_p->name, client_p->host))
577 return client_p->name;
578 else if (ConfigServerHide.hide_server_ips)
579 type = MASK_IP;
580 }
581
582 if (ConfigFileEntry.hide_spoof_ips)
583 if (type == SHOW_IP && IsIPSpoof(client_p))
584 type = MASK_IP;
585
586 /* And finally, let's get the host information, ip or name */
587 switch (type)
588 {
589 case SHOW_IP:
590 snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]",
591 client_p->name,
592 client_p->username, client_p->sockhost);
593 break;
594 case MASK_IP:
595 if (client_p->localClient->aftype == AF_INET)
596 snprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]",
597 client_p->name, client_p->username);
598 else
599 snprintf(nbuf, sizeof(nbuf), "%s[%s@ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]",
600 client_p->name, client_p->username);
601 break;
602 default:
603 snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]",
604 client_p->name,
605 client_p->username, client_p->host);
606 }
607
608 return nbuf;
609 }
610
611 void
612 free_exited_clients(void)
613 {
614 dlink_node *ptr = NULL, *next = NULL;
615
616 DLINK_FOREACH_SAFE(ptr, next, dead_list.head)
617 {
618 free_client(ptr->data);
619 dlinkDelete(ptr, &dead_list);
620 free_dlink_node(ptr);
621 }
622 }
623
624 /*
625 * Exit one client, local or remote. Assuming all dependents have
626 * been already removed, and socket closed for local client.
627 *
628 * The only messages generated are QUITs on channels.
629 */
630 static void
631 exit_one_client(struct Client *source_p, const char *quitmsg)
632 {
633 dlink_node *ptr = NULL, *ptr_next = NULL;
634
635 assert(!IsMe(source_p));
636
637 if (IsClient(source_p))
638 {
639 dlinkDelete(&source_p->lnode, &source_p->servptr->serv->client_list);
640
641 /*
642 * If a person is on a channel, send a QUIT notice
643 * to every client (person) on the same channel (so
644 * that the client can show the "**signoff" message).
645 * (Note: The notice is to the local clients *only*)
646 */
647 sendto_common_channels_local(source_p, 0, 0, ":%s!%s@%s QUIT :%s",
648 source_p->name, source_p->username,
649 source_p->host, quitmsg);
650 DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->channel.head)
651 remove_user_from_channel(ptr->data);
652
653 whowas_add_history(source_p, 0);
654 whowas_off_history(source_p);
655
656 watch_check_hash(source_p, RPL_LOGOFF);
657
658 if (MyConnect(source_p))
659 {
660 /* Clean up invitefield */
661 DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->localClient->invited.head)
662 del_invite(ptr->data, source_p);
663
664 del_all_accepts(source_p);
665 }
666 }
667 else if (IsServer(source_p))
668 {
669 dlinkDelete(&source_p->lnode, &source_p->servptr->serv->server_list);
670
671 if ((ptr = dlinkFindDelete(&global_serv_list, source_p)))
672 free_dlink_node(ptr);
673 }
674
675 /* Remove source_p from the client lists */
676 if (source_p->id[0])
677 hash_del_id(source_p);
678 if (source_p->name[0])
679 hash_del_client(source_p);
680
681 if (IsUserHostIp(source_p))
682 delete_user_host(source_p->username, source_p->host, !MyConnect(source_p));
683
684 /* remove from global client list
685 * NOTE: source_p->node.next cannot be NULL if the client is added
686 * to global_client_list (there is always &me at its end)
687 */
688 if (source_p->node.next) /* XXX: not needed? */
689 dlinkDelete(&source_p->node, &global_client_list);
690
691 update_client_exit_stats(source_p);
692
693 /* Check to see if the client isn't already on the dead list */
694 assert(dlinkFind(&dead_list, source_p) == NULL);
695
696 /* add to dead client dlist */
697 SetDead(source_p);
698 dlinkAdd(source_p, make_dlink_node(), &dead_list);
699 }
700
701 /*
702 * Remove all clients that depend on source_p; assumes all (S)QUITs have
703 * already been sent. we make sure to exit a server's dependent clients
704 * and servers before the server itself; exit_one_client takes care of
705 * actually removing things off llists. tweaked from +CSr31 -orabidoo
706 */
707 static void
708 recurse_remove_clients(struct Client *source_p, const char *quitmsg)
709 {
710 dlink_node *ptr = NULL, *ptr_next = NULL;
711
712 DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->client_list.head)
713 exit_one_client(ptr->data, quitmsg);
714
715 DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->server_list.head)
716 {
717 recurse_remove_clients(ptr->data, quitmsg);
718 exit_one_client(ptr->data, quitmsg);
719 }
720 }
721
722 /*
723 * exit_client - exit a client of any type. Generally, you can use
724 * this on any struct Client, regardless of its state.
725 *
726 * Note, you shouldn't exit remote _users_ without first doing
727 * AddFlag(x, FLAGS_KILLED) and propagating a kill or similar message.
728 *
729 * However, it is perfectly correct to call exit_client to force a _server_
730 * quit (either local or remote one).
731 *
732 *
733 * inputs: - a client pointer that is going to be exited
734 * output: none
735 * side effects: the client is delinked from all lists, disconnected,
736 * and the rest of IRC network is notified of the exit.
737 * Client memory is scheduled to be freed
738 */
739 void
740 exit_client(struct Client *source_p, const char *comment)
741 {
742 dlink_node *m = NULL;
743
744 if (MyConnect(source_p))
745 {
746 /* DO NOT REMOVE. exit_client can be called twice after a failed
747 * read/write.
748 */
749 if (IsClosing(source_p))
750 return;
751
752 SetClosing(source_p);
753
754 if (IsIpHash(source_p))
755 remove_one_ip(&source_p->localClient->ip);
756
757 delete_auth(&source_p->localClient->auth);
758
759 /*
760 * This source_p could have status of one of STAT_UNKNOWN, STAT_CONNECTING
761 * STAT_HANDSHAKE or STAT_UNKNOWN
762 * all of which are lumped together into unknown_list
763 *
764 * In all above cases IsRegistered() will not be true.
765 */
766 if (!IsRegistered(source_p))
767 {
768 assert(dlinkFind(&unknown_list, source_p));
769
770 dlinkDelete(&source_p->localClient->lclient_node, &unknown_list);
771 }
772 else if (IsClient(source_p))
773 {
774 time_t on_for = CurrentTime - source_p->localClient->firsttime;
775 assert(Count.local > 0);
776 Count.local--;
777
778 if (HasUMode(source_p, UMODE_OPER))
779 if ((m = dlinkFindDelete(&oper_list, source_p)))
780 free_dlink_node(m);
781
782 assert(dlinkFind(&local_client_list, source_p));
783 dlinkDelete(&source_p->localClient->lclient_node, &local_client_list);
784
785 if (source_p->localClient->list_task)
786 free_list_task(source_p);
787
788 watch_del_watch_list(source_p);
789 sendto_realops_flags(UMODE_CCONN, L_ALL, SEND_NOTICE,
790 "Client exiting: %s (%s@%s) [%s] [%s]",
791 source_p->name, source_p->username, source_p->host, comment,
792 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
793 "255.255.255.255" : source_p->sockhost);
794 ilog(LOG_TYPE_USER, "%s (%3u:%02u:%02u): %s!%s@%s %llu/%llu",
795 myctime(source_p->localClient->firsttime), (unsigned int)(on_for / 3600),
796 (unsigned int)((on_for % 3600)/60), (unsigned int)(on_for % 60),
797 source_p->name, source_p->username, source_p->host,
798 source_p->localClient->send.bytes>>10,
799 source_p->localClient->recv.bytes>>10);
800 }
801 else if (IsServer(source_p))
802 {
803 assert(Count.myserver > 0);
804 --Count.myserver;
805
806 assert(dlinkFind(&serv_list, source_p));
807 dlinkDelete(&source_p->localClient->lclient_node, &serv_list);
808 }
809
810 if (!IsDead(source_p))
811 {
812 if (IsServer(source_p))
813 {
814 if (!HasFlag(source_p, FLAGS_SQUIT))
815 {
816 /* for them, we are exiting the network */
817 sendto_one(source_p, ":%s SQUIT %s :%s",
818 me.id, me.id, comment);
819 }
820 }
821
822 sendto_one(source_p, "ERROR :Closing Link: %s (%s)",
823 source_p->host, comment);
824 }
825
826 close_connection(source_p);
827 }
828 else if (IsClient(source_p) && HasFlag(source_p->servptr, FLAGS_EOB))
829 sendto_realops_flags(UMODE_FARCONNECT, L_ALL, SEND_NOTICE,
830 "Client exiting at %s: %s (%s@%s) [%s]",
831 source_p->servptr->name, source_p->name,
832 source_p->username, source_p->host, comment);
833
834 if (IsServer(source_p))
835 {
836 char splitstr[HOSTLEN + HOSTLEN + 2] = "";
837
838 /* This shouldn't ever happen */
839 assert(source_p->serv && source_p->servptr);
840
841 if (ConfigServerHide.hide_servers)
842 /*
843 * Set netsplit message to "*.net *.split" to still show
844 * that its a split, but hide the servers splitting
845 */
846 strlcpy(splitstr, "*.net *.split", sizeof(splitstr));
847 else
848 snprintf(splitstr, sizeof(splitstr), "%s %s",
849 source_p->servptr->name, source_p->name);
850
851 /* Send SQUIT for source_p in every direction. source_p is already off of serv_list here */
852 if (!HasFlag(source_p, FLAGS_SQUIT))
853 sendto_server(NULL, NOCAPS, NOCAPS, "SQUIT %s :%s", source_p->id, comment);
854
855 /* Now exit the clients internally */
856 recurse_remove_clients(source_p, splitstr);
857
858 if (MyConnect(source_p))
859 {
860 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
861 "%s was connected for %d seconds. %llu/%llu sendK/recvK.",
862 source_p->name, (int)(CurrentTime - source_p->localClient->firsttime),
863 source_p->localClient->send.bytes >> 10,
864 source_p->localClient->recv.bytes >> 10);
865 ilog(LOG_TYPE_IRCD, "%s was connected for %d seconds. %llu/%llu sendK/recvK.",
866 source_p->name, (int)(CurrentTime - source_p->localClient->firsttime),
867 source_p->localClient->send.bytes >> 10,
868 source_p->localClient->recv.bytes >> 10);
869 }
870 }
871 else if (IsClient(source_p) && !HasFlag(source_p, FLAGS_KILLED))
872 sendto_server(source_p->from, NOCAPS, NOCAPS, ":%s QUIT :%s",
873 source_p->id, comment);
874
875 /* The client *better* be off all of the lists */
876 assert(dlinkFind(&unknown_list, source_p) == NULL);
877 assert(dlinkFind(&local_client_list, source_p) == NULL);
878 assert(dlinkFind(&serv_list, source_p) == NULL);
879 assert(dlinkFind(&oper_list, source_p) == NULL);
880
881 exit_one_client(source_p, comment);
882 }
883
884 /*
885 * dead_link_on_write - report a write error if not already dead,
886 * mark it as dead then exit it
887 */
888 void
889 dead_link_on_write(struct Client *client_p, int ierrno)
890 {
891 dlink_node *ptr;
892
893 if (IsDefunct(client_p))
894 return;
895
896 dbuf_clear(&client_p->localClient->buf_recvq);
897 dbuf_clear(&client_p->localClient->buf_sendq);
898
899 assert(dlinkFind(&abort_list, client_p) == NULL);
900 ptr = make_dlink_node();
901 /* don't let exit_aborted_clients() finish yet */
902 dlinkAddTail(client_p, ptr, &abort_list);
903
904 if (eac_next == NULL)
905 eac_next = ptr;
906
907 SetDead(client_p); /* You are dead my friend */
908 }
909
910 /*
911 * dead_link_on_read - report a read error if not already dead,
912 * mark it as dead then exit it
913 */
914 void
915 dead_link_on_read(struct Client *client_p, int error)
916 {
917 char errmsg[IRCD_BUFSIZE];
918 int current_error;
919
920 if (IsDefunct(client_p))
921 return;
922
923 dbuf_clear(&client_p->localClient->buf_recvq);
924 dbuf_clear(&client_p->localClient->buf_sendq);
925
926 current_error = get_sockerr(client_p->localClient->fd.fd);
927
928 if (IsServer(client_p) || IsHandshake(client_p))
929 {
930 int connected = CurrentTime - client_p->localClient->firsttime;
931
932 if (error == 0)
933 {
934 /* Admins get the real IP */
935 sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
936 "Server %s closed the connection",
937 get_client_name(client_p, SHOW_IP));
938
939 /* Opers get a masked IP */
940 sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
941 "Server %s closed the connection",
942 get_client_name(client_p, MASK_IP));
943
944 ilog(LOG_TYPE_IRCD, "Server %s closed the connection",
945 get_client_name(client_p, SHOW_IP));
946 }
947 else
948 {
949 report_error(L_ADMIN, "Lost connection to %s: %s",
950 get_client_name(client_p, SHOW_IP), current_error);
951 report_error(L_OPER, "Lost connection to %s: %s",
952 get_client_name(client_p, MASK_IP), current_error);
953 }
954
955 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
956 "%s had been connected for %d day%s, %2d:%02d:%02d",
957 client_p->name, connected/86400,
958 (connected/86400 == 1) ? "" : "s",
959 (connected % 86400) / 3600, (connected % 3600) / 60,
960 connected % 60);
961 }
962
963 if (error == 0)
964 strlcpy(errmsg, "Remote host closed the connection",
965 sizeof(errmsg));
966 else
967 snprintf(errmsg, sizeof(errmsg), "Read error: %s",
968 strerror(current_error));
969
970 exit_client(client_p, errmsg);
971 }
972
973 void
974 exit_aborted_clients(void)
975 {
976 dlink_node *ptr;
977 struct Client *target_p;
978 const char *notice;
979
980 DLINK_FOREACH_SAFE(ptr, eac_next, abort_list.head)
981 {
982 target_p = ptr->data;
983 eac_next = ptr->next;
984
985 if (target_p == NULL)
986 {
987 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
988 "Warning: null client on abort_list!");
989 dlinkDelete(ptr, &abort_list);
990 free_dlink_node(ptr);
991 continue;
992 }
993
994 dlinkDelete(ptr, &abort_list);
995
996 if (IsSendQExceeded(target_p))
997 notice = "Max SendQ exceeded";
998 else
999 notice = "Write error: connection closed";
1000
1001 exit_client(target_p, notice);
1002 free_dlink_node(ptr);
1003 }
1004 }
1005
1006 /*
1007 * accept processing, this adds a form of "caller ID" to ircd
1008 *
1009 * If a client puts themselves into "caller ID only" mode,
1010 * only clients that match a client pointer they have put on
1011 * the accept list will be allowed to message them.
1012 *
1013 * Diane Bruce, "Dianora" db@db.net
1014 */
1015
1016 void
1017 del_accept(struct split_nuh_item *accept_p, struct Client *client_p)
1018 {
1019 dlinkDelete(&accept_p->node, &client_p->localClient->acceptlist);
1020
1021 MyFree(accept_p->nickptr);
1022 MyFree(accept_p->userptr);
1023 MyFree(accept_p->hostptr);
1024 MyFree(accept_p);
1025 }
1026
1027 struct split_nuh_item *
1028 find_accept(const char *nick, const char *user,
1029 const char *host, struct Client *client_p,
1030 int (*cmpfunc)(const char *, const char *))
1031 {
1032 dlink_node *ptr = NULL;
1033
1034 DLINK_FOREACH(ptr, client_p->localClient->acceptlist.head)
1035 {
1036 struct split_nuh_item *accept_p = ptr->data;
1037
1038 if (!cmpfunc(accept_p->nickptr, nick) &&
1039 !cmpfunc(accept_p->userptr, user) &&
1040 !cmpfunc(accept_p->hostptr, host))
1041 return accept_p;
1042 }
1043
1044 return NULL;
1045 }
1046
1047 /* accept_message()
1048 *
1049 * inputs - pointer to source client
1050 * - pointer to target client
1051 * output - 1 if accept this message 0 if not
1052 * side effects - See if source is on target's allow list
1053 */
1054 int
1055 accept_message(struct Client *source,
1056 struct Client *target)
1057 {
1058 dlink_node *ptr = NULL;
1059
1060 if (source == target || find_accept(source->name, source->username,
1061 source->host, target, match))
1062 return 1;
1063
1064 if (HasUMode(target, UMODE_SOFTCALLERID))
1065 DLINK_FOREACH(ptr, target->channel.head)
1066 if (IsMember(source, ((struct Membership *)ptr->data)->chptr))
1067 return 1;
1068
1069 return 0;
1070 }
1071
1072 /* del_all_accepts()
1073 *
1074 * inputs - pointer to exiting client
1075 * output - NONE
1076 * side effects - Walk through given clients acceptlist and remove all entries
1077 */
1078 void
1079 del_all_accepts(struct Client *client_p)
1080 {
1081 dlink_node *ptr = NULL, *ptr_next = NULL;
1082
1083 DLINK_FOREACH_SAFE(ptr, ptr_next, client_p->localClient->acceptlist.head)
1084 del_accept(ptr->data, client_p);
1085 }
1086
1087 unsigned int
1088 idle_time_get(const struct Client *source_p, const struct Client *target_p)
1089 {
1090 unsigned int idle = 0;
1091 unsigned int min_idle = 0;
1092 unsigned int max_idle = 0;
1093 const struct ClassItem *class = get_class_ptr(&target_p->localClient->confs);
1094
1095 if (!(class->flags & CLASS_FLAGS_FAKE_IDLE) || target_p == source_p)
1096 return CurrentTime - target_p->localClient->last_privmsg;
1097 if (HasUMode(source_p, UMODE_OPER) &&
1098 !(class->flags & CLASS_FLAGS_HIDE_IDLE_FROM_OPERS))
1099 return CurrentTime - target_p->localClient->last_privmsg;
1100
1101 min_idle = class->min_idle;
1102 max_idle = class->max_idle;
1103
1104 if (min_idle == max_idle)
1105 return min_idle;
1106
1107 if (class->flags & CLASS_FLAGS_RANDOM_IDLE)
1108 idle = genrand_int32();
1109 else
1110 idle = CurrentTime - target_p->localClient->last_privmsg;
1111
1112 if (!max_idle)
1113 idle = 0;
1114 else
1115 idle %= max_idle;
1116
1117 if (idle < min_idle)
1118 idle = min_idle + (idle % (max_idle - min_idle));
1119
1120 return idle;
1121 }

Properties

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