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212380e3 | 1 | /* |
b37021a4 | 2 | * charybdis: an advanced ircd. |
212380e3 AC |
3 | * client.c: Controls clients. |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
b37021a4 | 8 | * Copyright (C) 2007 William Pitcock |
212380e3 AC |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
23 | * USA | |
24 | * | |
f80a1823 | 25 | * $Id: client.c 3514 2007-06-06 16:25:21Z nenolod $ |
212380e3 AC |
26 | */ |
27 | #include "stdinc.h" | |
28 | #include "config.h" | |
29 | ||
30 | #include "tools.h" | |
31 | #include "client.h" | |
32 | #include "class.h" | |
33 | #include "common.h" | |
34 | #include "event.h" | |
35 | #include "hash.h" | |
36 | #include "irc_string.h" | |
37 | #include "sprintf_irc.h" | |
38 | #include "ircd.h" | |
39 | #include "s_gline.h" | |
40 | #include "numeric.h" | |
41 | #include "packet.h" | |
42 | #include "s_auth.h" | |
43 | #include "commio.h" | |
44 | #include "s_conf.h" | |
45 | #include "s_newconf.h" | |
46 | #include "s_log.h" | |
47 | #include "s_serv.h" | |
48 | #include "s_stats.h" | |
49 | #include "send.h" | |
50 | #include "whowas.h" | |
51 | #include "s_user.h" | |
52 | #include "linebuf.h" | |
53 | #include "hash.h" | |
54 | #include "memory.h" | |
55 | #include "hostmask.h" | |
56 | #include "balloc.h" | |
57 | #include "listener.h" | |
58 | #include "hook.h" | |
59 | #include "msg.h" | |
60 | #include "monitor.h" | |
61 | #include "blacklist.h" | |
54015b5f | 62 | #include "reject.h" |
994544c2 | 63 | #include "scache.h" |
b37021a4 | 64 | #include "irc_dictionary.h" |
212380e3 AC |
65 | |
66 | #define DEBUG_EXITED_CLIENTS | |
67 | ||
68 | static void check_pings_list(dlink_list * list); | |
69 | static void check_unknowns_list(dlink_list * list); | |
70 | static void free_exited_clients(void *unused); | |
71 | static void exit_aborted_clients(void *unused); | |
72 | ||
73 | static int exit_remote_client(struct Client *, struct Client *, struct Client *,const char *); | |
74 | static int exit_remote_server(struct Client *, struct Client *, struct Client *,const char *); | |
75 | static int exit_local_client(struct Client *, struct Client *, struct Client *,const char *); | |
76 | static int exit_unknown_client(struct Client *, struct Client *, struct Client *,const char *); | |
77 | static int exit_local_server(struct Client *, struct Client *, struct Client *,const char *); | |
78 | static int qs_server(struct Client *, struct Client *, struct Client *, const char *comment); | |
79 | ||
80 | static EVH check_pings; | |
81 | ||
82 | extern BlockHeap *client_heap; | |
83 | extern BlockHeap *lclient_heap; | |
84 | extern BlockHeap *pclient_heap; | |
85 | ||
86 | extern char current_uid[IDLEN]; | |
87 | ||
43de0f45 AC |
88 | struct Dictionary *nd_dict = NULL; |
89 | ||
212380e3 AC |
90 | enum |
91 | { | |
92 | D_LINED, | |
93 | K_LINED, | |
94 | G_LINED | |
95 | }; | |
96 | ||
97 | dlink_list dead_list; | |
98 | #ifdef DEBUG_EXITED_CLIENTS | |
99 | static dlink_list dead_remote_list; | |
100 | #endif | |
101 | ||
102 | struct abort_client | |
103 | { | |
104 | dlink_node node; | |
105 | struct Client *client; | |
106 | char notice[REASONLEN]; | |
107 | }; | |
108 | ||
109 | static dlink_list abort_list; | |
110 | ||
111 | ||
112 | /* | |
113 | * init_client | |
114 | * | |
115 | * inputs - NONE | |
116 | * output - NONE | |
117 | * side effects - initialize client free memory | |
118 | */ | |
119 | void | |
120 | init_client(void) | |
121 | { | |
122 | /* | |
123 | * start off the check ping event .. -- adrian | |
124 | * Every 30 seconds is plenty -- db | |
125 | */ | |
126 | client_heap = BlockHeapCreate(sizeof(struct Client), CLIENT_HEAP_SIZE); | |
127 | lclient_heap = BlockHeapCreate(sizeof(struct LocalUser), LCLIENT_HEAP_SIZE); | |
128 | pclient_heap = BlockHeapCreate(sizeof(struct PreClient), PCLIENT_HEAP_SIZE); | |
129 | eventAddIsh("check_pings", check_pings, NULL, 30); | |
130 | eventAddIsh("free_exited_clients", &free_exited_clients, NULL, 4); | |
131 | eventAddIsh("exit_aborted_clients", exit_aborted_clients, NULL, 1); | |
43de0f45 AC |
132 | |
133 | nd_dict = irc_dictionary_create(irccmp); | |
212380e3 AC |
134 | } |
135 | ||
136 | ||
137 | /* | |
138 | * make_client - create a new Client struct and set it to initial state. | |
139 | * | |
140 | * from == NULL, create local client (a client connected | |
141 | * to a socket). | |
142 | * | |
143 | * from, create remote client (behind a socket | |
144 | * associated with the client defined by | |
145 | * 'from'). ('from' is a local client!!). | |
146 | */ | |
147 | struct Client * | |
148 | make_client(struct Client *from) | |
149 | { | |
150 | struct Client *client_p = NULL; | |
151 | struct LocalUser *localClient; | |
152 | ||
153 | client_p = BlockHeapAlloc(client_heap); | |
154 | ||
155 | if(from == NULL) | |
156 | { | |
157 | client_p->from = client_p; /* 'from' of local client is self! */ | |
158 | ||
159 | localClient = (struct LocalUser *) BlockHeapAlloc(lclient_heap); | |
160 | SetMyConnect(client_p); | |
161 | client_p->localClient = localClient; | |
162 | ||
163 | client_p->localClient->lasttime = client_p->localClient->firsttime = CurrentTime; | |
164 | ||
c5c2f506 | 165 | client_p->localClient->F = NULL; |
212380e3 AC |
166 | client_p->localClient->ctrlfd = -1; |
167 | ||
168 | client_p->preClient = (struct PreClient *) BlockHeapAlloc(pclient_heap); | |
169 | ||
170 | /* as good a place as any... */ | |
171 | dlinkAdd(client_p, &client_p->localClient->tnode, &unknown_list); | |
172 | } | |
173 | else | |
174 | { /* from is not NULL */ | |
175 | client_p->localClient = NULL; | |
176 | client_p->preClient = NULL; | |
177 | client_p->from = from; /* 'from' of local client is self! */ | |
178 | } | |
179 | ||
180 | SetUnknown(client_p); | |
181 | strcpy(client_p->username, "unknown"); | |
182 | ||
183 | return client_p; | |
184 | } | |
185 | ||
186 | void | |
187 | free_pre_client(struct Client *client_p) | |
188 | { | |
189 | struct Blacklist *blptr; | |
190 | ||
191 | s_assert(NULL != client_p); | |
192 | ||
193 | if(client_p->preClient == NULL) | |
194 | return; | |
195 | ||
196 | blptr = client_p->preClient->dnsbl_listed; | |
197 | if (blptr != NULL) | |
198 | unref_blacklist(blptr); | |
199 | abort_blacklist_queries(client_p); | |
200 | BlockHeapFree(pclient_heap, client_p->preClient); | |
201 | client_p->preClient = NULL; | |
202 | } | |
203 | ||
204 | static void | |
205 | free_local_client(struct Client *client_p) | |
206 | { | |
207 | s_assert(NULL != client_p); | |
208 | s_assert(&me != client_p); | |
209 | ||
210 | if(client_p->localClient == NULL) | |
211 | return; | |
212 | ||
213 | /* | |
214 | * clean up extra sockets from P-lines which have been discarded. | |
215 | */ | |
216 | if(client_p->localClient->listener) | |
217 | { | |
218 | s_assert(0 < client_p->localClient->listener->ref_count); | |
219 | if(0 == --client_p->localClient->listener->ref_count | |
220 | && !client_p->localClient->listener->active) | |
221 | free_listener(client_p->localClient->listener); | |
222 | client_p->localClient->listener = 0; | |
223 | } | |
224 | ||
c5c2f506 AC |
225 | if(client_p->localClient->F->fd >= 0) |
226 | comm_close(client_p->localClient->F->fd); | |
212380e3 AC |
227 | |
228 | if(client_p->localClient->passwd) | |
229 | { | |
230 | memset(client_p->localClient->passwd, 0, | |
231 | strlen(client_p->localClient->passwd)); | |
232 | MyFree(client_p->localClient->passwd); | |
233 | } | |
234 | ||
235 | MyFree(client_p->localClient->challenge); | |
236 | MyFree(client_p->localClient->fullcaps); | |
237 | MyFree(client_p->localClient->opername); | |
238 | MyFree(client_p->localClient->mangledhost); | |
239 | ||
240 | BlockHeapFree(lclient_heap, client_p->localClient); | |
241 | client_p->localClient = NULL; | |
242 | } | |
243 | ||
244 | void | |
245 | free_client(struct Client *client_p) | |
246 | { | |
247 | s_assert(NULL != client_p); | |
248 | s_assert(&me != client_p); | |
249 | free_local_client(client_p); | |
250 | free_pre_client(client_p); | |
251 | BlockHeapFree(client_heap, client_p); | |
252 | } | |
253 | ||
254 | /* | |
255 | * check_pings - go through the local client list and check activity | |
256 | * kill off stuff that should die | |
257 | * | |
258 | * inputs - NOT USED (from event) | |
259 | * output - next time_t when check_pings() should be called again | |
260 | * side effects - | |
261 | * | |
262 | * | |
263 | * A PING can be sent to clients as necessary. | |
264 | * | |
265 | * Client/Server ping outs are handled. | |
266 | */ | |
267 | ||
268 | /* | |
269 | * Addon from adrian. We used to call this after nextping seconds, | |
270 | * however I've changed it to run once a second. This is only for | |
271 | * PING timeouts, not K/etc-line checks (thanks dianora!). Having it | |
272 | * run once a second makes life a lot easier - when a new client connects | |
273 | * and they need a ping in 4 seconds, if nextping was set to 20 seconds | |
274 | * we end up waiting 20 seconds. This is stupid. :-) | |
275 | * I will optimise (hah!) check_pings() once I've finished working on | |
276 | * tidying up other network IO evilnesses. | |
277 | * -- adrian | |
278 | */ | |
279 | ||
280 | static void | |
281 | check_pings(void *notused) | |
282 | { | |
283 | check_pings_list(&lclient_list); | |
284 | check_pings_list(&serv_list); | |
285 | check_unknowns_list(&unknown_list); | |
286 | } | |
287 | ||
288 | /* | |
289 | * Check_pings_list() | |
290 | * | |
291 | * inputs - pointer to list to check | |
292 | * output - NONE | |
293 | * side effects - | |
294 | */ | |
295 | static void | |
296 | check_pings_list(dlink_list * list) | |
297 | { | |
298 | char scratch[32]; /* way too generous but... */ | |
299 | struct Client *client_p; /* current local client_p being examined */ | |
300 | int ping = 0; /* ping time value from client */ | |
301 | dlink_node *ptr, *next_ptr; | |
302 | ||
303 | DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) | |
304 | { | |
305 | client_p = ptr->data; | |
306 | ||
307 | /* | |
308 | ** Note: No need to notify opers here. It's | |
309 | ** already done when "FLAGS_DEADSOCKET" is set. | |
310 | */ | |
311 | if(!MyConnect(client_p) || IsDead(client_p)) | |
312 | continue; | |
313 | ||
314 | if(IsPerson(client_p)) | |
315 | { | |
316 | if(!IsExemptKline(client_p) && | |
317 | GlobalSetOptions.idletime && | |
318 | !IsOper(client_p) && | |
319 | !IsIdlelined(client_p) && | |
320 | ((CurrentTime - client_p->localClient->last) > GlobalSetOptions.idletime)) | |
321 | { | |
322 | struct ConfItem *aconf; | |
323 | ||
324 | aconf = make_conf(); | |
325 | aconf->status = CONF_KILL; | |
326 | ||
327 | DupString(aconf->host, client_p->host); | |
328 | DupString(aconf->passwd, "idle exceeder"); | |
329 | DupString(aconf->user, client_p->username); | |
330 | aconf->port = 0; | |
331 | aconf->hold = CurrentTime + 60; | |
332 | add_temp_kline(aconf); | |
333 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
334 | "Idle time limit exceeded for %s - temp k-lining", | |
335 | get_client_name(client_p, HIDE_IP)); | |
336 | ||
337 | exit_client(client_p, client_p, &me, aconf->passwd); | |
338 | continue; | |
339 | } | |
340 | } | |
341 | ||
e2a98043 | 342 | ping = get_client_ping(client_p); |
212380e3 AC |
343 | |
344 | if(ping < (CurrentTime - client_p->localClient->lasttime)) | |
345 | { | |
346 | /* | |
347 | * If the client/server hasnt talked to us in 2*ping seconds | |
348 | * and it has a ping time, then close its connection. | |
349 | */ | |
350 | if(((CurrentTime - client_p->localClient->lasttime) >= (2 * ping) | |
351 | && (client_p->flags & FLAGS_PINGSENT))) | |
352 | { | |
e2a98043 | 353 | if(IsServer(client_p)) |
212380e3 | 354 | { |
e2a98043 | 355 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 AC |
356 | "No response from %s, closing link", |
357 | get_server_name(client_p, HIDE_IP)); | |
358 | ilog(L_SERVER, | |
359 | "No response from %s, closing link", | |
360 | log_client_name(client_p, HIDE_IP)); | |
361 | } | |
362 | (void) ircsnprintf(scratch, sizeof(scratch), | |
363 | "Ping timeout: %d seconds", | |
364 | (int) (CurrentTime - client_p->localClient->lasttime)); | |
365 | ||
366 | exit_client(client_p, client_p, &me, scratch); | |
367 | continue; | |
368 | } | |
369 | else if((client_p->flags & FLAGS_PINGSENT) == 0) | |
370 | { | |
371 | /* | |
372 | * if we havent PINGed the connection and we havent | |
373 | * heard from it in a while, PING it to make sure | |
374 | * it is still alive. | |
375 | */ | |
376 | client_p->flags |= FLAGS_PINGSENT; | |
377 | /* not nice but does the job */ | |
378 | client_p->localClient->lasttime = CurrentTime - ping; | |
379 | sendto_one(client_p, "PING :%s", me.name); | |
380 | } | |
381 | } | |
382 | /* ping_timeout: */ | |
383 | ||
384 | } | |
385 | } | |
386 | ||
387 | /* | |
388 | * check_unknowns_list | |
389 | * | |
390 | * inputs - pointer to list of unknown clients | |
391 | * output - NONE | |
392 | * side effects - unknown clients get marked for termination after n seconds | |
393 | */ | |
394 | static void | |
395 | check_unknowns_list(dlink_list * list) | |
396 | { | |
397 | dlink_node *ptr, *next_ptr; | |
398 | struct Client *client_p; | |
35cf4c79 | 399 | int timeout; |
212380e3 AC |
400 | |
401 | DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) | |
402 | { | |
403 | client_p = ptr->data; | |
404 | ||
405 | if(IsDead(client_p) || IsClosing(client_p)) | |
406 | continue; | |
407 | ||
408 | /* | |
409 | * Check UNKNOWN connections - if they have been in this state | |
410 | * for > 30s, close them. | |
411 | */ | |
412 | ||
35cf4c79 JT |
413 | timeout = IsAnyServer(client_p) ? ConfigFileEntry.connect_timeout : 30; |
414 | if((CurrentTime - client_p->localClient->firsttime) > timeout) | |
415 | { | |
416 | if(IsAnyServer(client_p)) | |
417 | { | |
418 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
419 | "No response from %s, closing link", | |
420 | get_server_name(client_p, HIDE_IP)); | |
421 | ilog(L_SERVER, | |
422 | "No response from %s, closing link", | |
423 | log_client_name(client_p, HIDE_IP)); | |
424 | } | |
212380e3 | 425 | exit_client(client_p, client_p, &me, "Connection timed out"); |
35cf4c79 | 426 | } |
212380e3 AC |
427 | } |
428 | } | |
429 | ||
430 | static void | |
431 | notify_banned_client(struct Client *client_p, struct ConfItem *aconf, int ban) | |
432 | { | |
433 | static const char conn_closed[] = "Connection closed"; | |
434 | static const char d_lined[] = "D-lined"; | |
435 | static const char k_lined[] = "K-lined"; | |
436 | static const char g_lined[] = "G-lined"; | |
437 | const char *reason = NULL; | |
438 | const char *exit_reason = conn_closed; | |
439 | ||
440 | if(ConfigFileEntry.kline_with_reason && !EmptyString(aconf->passwd)) | |
441 | { | |
442 | reason = aconf->passwd; | |
443 | exit_reason = aconf->passwd; | |
444 | } | |
445 | else | |
446 | { | |
447 | switch (aconf->status) | |
448 | { | |
449 | case D_LINED: | |
450 | reason = d_lined; | |
451 | break; | |
452 | case G_LINED: | |
453 | reason = g_lined; | |
454 | break; | |
455 | default: | |
456 | reason = k_lined; | |
457 | break; | |
458 | } | |
459 | } | |
460 | ||
461 | if(ban == D_LINED && !IsPerson(client_p)) | |
462 | sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined"); | |
463 | else | |
464 | sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP), | |
465 | me.name, client_p->name, reason); | |
466 | ||
467 | exit_client(client_p, client_p, &me, | |
468 | EmptyString(ConfigFileEntry.kline_reason) ? exit_reason : | |
469 | ConfigFileEntry.kline_reason); | |
470 | } | |
471 | ||
472 | /* | |
473 | * check_banned_lines | |
474 | * inputs - NONE | |
475 | * output - NONE | |
476 | * side effects - Check all connections for a pending k/d/gline against the | |
477 | * client, exit the client if found. | |
478 | */ | |
479 | void | |
480 | check_banned_lines(void) | |
481 | { | |
482 | struct Client *client_p; /* current local client_p being examined */ | |
483 | struct ConfItem *aconf = NULL; | |
484 | dlink_node *ptr, *next_ptr; | |
485 | ||
486 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
487 | { | |
488 | client_p = ptr->data; | |
489 | ||
490 | if(IsMe(client_p)) | |
491 | continue; | |
492 | ||
493 | /* if there is a returned struct ConfItem then kill it */ | |
494 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, client_p->localClient->ip.ss_family))) | |
495 | { | |
496 | if(aconf->status & CONF_EXEMPTDLINE) | |
497 | continue; | |
498 | ||
499 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
500 | "DLINE active for %s", | |
501 | get_client_name(client_p, HIDE_IP)); | |
502 | ||
503 | notify_banned_client(client_p, aconf, D_LINED); | |
504 | continue; /* and go examine next fd/client_p */ | |
505 | } | |
506 | ||
507 | if(!IsPerson(client_p)) | |
508 | continue; | |
509 | ||
510 | if((aconf = find_kline(client_p)) != NULL) | |
511 | { | |
512 | if(IsExemptKline(client_p)) | |
513 | { | |
514 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
515 | "KLINE over-ruled for %s, client is kline_exempt [%s@%s]", | |
516 | get_client_name(client_p, HIDE_IP), | |
517 | aconf->user, aconf->host); | |
518 | continue; | |
519 | } | |
520 | ||
521 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
522 | "KLINE active for %s", | |
523 | get_client_name(client_p, HIDE_IP)); | |
524 | notify_banned_client(client_p, aconf, K_LINED); | |
525 | continue; | |
526 | } | |
527 | else if((aconf = find_gline(client_p)) != NULL) | |
528 | { | |
529 | if(IsExemptKline(client_p)) | |
530 | { | |
531 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
532 | "GLINE over-ruled for %s, client is kline_exempt [%s@%s]", | |
533 | get_client_name(client_p, HIDE_IP), | |
534 | aconf->user, aconf->host); | |
535 | continue; | |
536 | } | |
537 | ||
538 | if(IsExemptGline(client_p)) | |
539 | { | |
540 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
541 | "GLINE over-ruled for %s, client is gline_exempt [%s@%s]", | |
542 | get_client_name(client_p, HIDE_IP), | |
543 | aconf->user, aconf->host); | |
544 | continue; | |
545 | } | |
546 | ||
547 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
548 | "GLINE active for %s", | |
549 | get_client_name(client_p, HIDE_IP)); | |
550 | ||
551 | notify_banned_client(client_p, aconf, G_LINED); | |
552 | continue; | |
553 | } | |
554 | else if((aconf = find_xline(client_p->info, 1)) != NULL) | |
555 | { | |
556 | if(IsExemptKline(client_p)) | |
557 | { | |
558 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
559 | "XLINE over-ruled for %s, client is kline_exempt [%s]", | |
560 | get_client_name(client_p, HIDE_IP), | |
561 | aconf->name); | |
562 | continue; | |
563 | } | |
564 | ||
565 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
566 | get_client_name(client_p, HIDE_IP)); | |
567 | ||
568 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
569 | continue; | |
570 | } | |
571 | } | |
572 | ||
573 | /* also check the unknowns list for new dlines */ | |
574 | DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) | |
575 | { | |
576 | client_p = ptr->data; | |
577 | ||
578 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family))) | |
579 | { | |
580 | if(aconf->status & CONF_EXEMPTDLINE) | |
581 | continue; | |
582 | ||
583 | notify_banned_client(client_p, aconf, D_LINED); | |
584 | } | |
585 | } | |
586 | ||
587 | } | |
588 | ||
589 | /* check_klines_event() | |
590 | * | |
591 | * inputs - | |
592 | * outputs - | |
593 | * side effects - check_klines() is called, kline_queued unset | |
594 | */ | |
595 | void | |
596 | check_klines_event(void *unused) | |
597 | { | |
598 | kline_queued = 0; | |
599 | check_klines(); | |
600 | } | |
601 | ||
602 | /* check_klines | |
603 | * | |
604 | * inputs - | |
605 | * outputs - | |
606 | * side effects - all clients will be checked for klines | |
607 | */ | |
608 | void | |
609 | check_klines(void) | |
610 | { | |
611 | struct Client *client_p; | |
612 | struct ConfItem *aconf; | |
613 | dlink_node *ptr; | |
614 | dlink_node *next_ptr; | |
615 | ||
616 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
617 | { | |
618 | client_p = ptr->data; | |
619 | ||
620 | if(IsMe(client_p) || !IsPerson(client_p)) | |
621 | continue; | |
622 | ||
623 | if((aconf = find_kline(client_p)) != NULL) | |
624 | { | |
625 | if(IsExemptKline(client_p)) | |
626 | { | |
627 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
628 | "KLINE over-ruled for %s, client is kline_exempt", | |
629 | get_client_name(client_p, HIDE_IP)); | |
630 | continue; | |
631 | } | |
632 | ||
633 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
634 | "KLINE active for %s", | |
635 | get_client_name(client_p, HIDE_IP)); | |
636 | ||
637 | notify_banned_client(client_p, aconf, K_LINED); | |
638 | continue; | |
639 | } | |
640 | } | |
641 | } | |
642 | ||
643 | /* check_glines() | |
644 | * | |
645 | * inputs - | |
646 | * outputs - | |
647 | * side effects - all clients will be checked for glines | |
648 | */ | |
649 | void | |
650 | check_glines(void) | |
651 | { | |
652 | struct Client *client_p; | |
653 | struct ConfItem *aconf; | |
654 | dlink_node *ptr; | |
655 | dlink_node *next_ptr; | |
656 | ||
657 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
658 | { | |
659 | client_p = ptr->data; | |
660 | ||
661 | if(IsMe(client_p) || !IsPerson(client_p)) | |
662 | continue; | |
663 | ||
664 | if((aconf = find_gline(client_p)) != NULL) | |
665 | { | |
666 | if(IsExemptKline(client_p)) | |
667 | { | |
668 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
669 | "GLINE over-ruled for %s, client is kline_exempt", | |
670 | get_client_name(client_p, HIDE_IP)); | |
671 | continue; | |
672 | } | |
673 | ||
674 | if(IsExemptGline(client_p)) | |
675 | { | |
676 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
677 | "GLINE over-ruled for %s, client is gline_exempt", | |
678 | get_client_name(client_p, HIDE_IP)); | |
679 | continue; | |
680 | } | |
681 | ||
682 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
683 | "GLINE active for %s", | |
684 | get_client_name(client_p, HIDE_IP)); | |
685 | ||
686 | notify_banned_client(client_p, aconf, K_LINED); | |
687 | continue; | |
688 | } | |
689 | } | |
690 | } | |
691 | ||
692 | /* check_dlines() | |
693 | * | |
694 | * inputs - | |
695 | * outputs - | |
696 | * side effects - all clients will be checked for dlines | |
697 | */ | |
698 | void | |
699 | check_dlines(void) | |
700 | { | |
701 | struct Client *client_p; | |
702 | struct ConfItem *aconf; | |
703 | dlink_node *ptr; | |
704 | dlink_node *next_ptr; | |
705 | ||
706 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
707 | { | |
708 | client_p = ptr->data; | |
709 | ||
710 | if(IsMe(client_p)) | |
711 | continue; | |
712 | ||
713 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) | |
714 | { | |
715 | if(aconf->status & CONF_EXEMPTDLINE) | |
716 | continue; | |
717 | ||
718 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
719 | "DLINE active for %s", | |
720 | get_client_name(client_p, HIDE_IP)); | |
721 | ||
722 | notify_banned_client(client_p, aconf, D_LINED); | |
723 | continue; | |
724 | } | |
725 | } | |
726 | ||
727 | /* dlines need to be checked against unknowns too */ | |
728 | DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) | |
729 | { | |
730 | client_p = ptr->data; | |
731 | ||
732 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) | |
733 | { | |
734 | if(aconf->status & CONF_EXEMPTDLINE) | |
735 | continue; | |
736 | ||
737 | notify_banned_client(client_p, aconf, D_LINED); | |
738 | } | |
739 | } | |
740 | } | |
741 | ||
742 | /* check_xlines | |
743 | * | |
744 | * inputs - | |
745 | * outputs - | |
746 | * side effects - all clients will be checked for xlines | |
747 | */ | |
748 | void | |
749 | check_xlines(void) | |
750 | { | |
751 | struct Client *client_p; | |
752 | struct ConfItem *aconf; | |
753 | dlink_node *ptr; | |
754 | dlink_node *next_ptr; | |
755 | ||
756 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
757 | { | |
758 | client_p = ptr->data; | |
759 | ||
760 | if(IsMe(client_p) || !IsPerson(client_p)) | |
761 | continue; | |
762 | ||
763 | if((aconf = find_xline(client_p->info, 1)) != NULL) | |
764 | { | |
765 | if(IsExemptKline(client_p)) | |
766 | { | |
767 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
768 | "XLINE over-ruled for %s, client is kline_exempt", | |
769 | get_client_name(client_p, HIDE_IP)); | |
770 | continue; | |
771 | } | |
772 | ||
773 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
774 | get_client_name(client_p, HIDE_IP)); | |
775 | ||
776 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
777 | continue; | |
778 | } | |
779 | } | |
780 | } | |
781 | ||
782 | /* | |
783 | * update_client_exit_stats | |
784 | * | |
785 | * input - pointer to client | |
786 | * output - NONE | |
787 | * side effects - | |
788 | */ | |
789 | static void | |
790 | update_client_exit_stats(struct Client *client_p) | |
791 | { | |
792 | if(IsServer(client_p)) | |
793 | { | |
794 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
795 | "Server %s split from %s", | |
796 | client_p->name, client_p->servptr->name); | |
797 | if(HasSentEob(client_p)) | |
798 | eob_count--; | |
799 | } | |
800 | else if(IsClient(client_p)) | |
801 | { | |
802 | --Count.total; | |
803 | if(IsOper(client_p)) | |
804 | --Count.oper; | |
805 | if(IsInvisible(client_p)) | |
806 | --Count.invisi; | |
807 | } | |
808 | ||
809 | if(splitchecking && !splitmode) | |
810 | check_splitmode(NULL); | |
811 | } | |
812 | ||
813 | /* | |
814 | * release_client_state | |
815 | * | |
816 | * input - pointer to client to release | |
817 | * output - NONE | |
818 | * side effects - | |
819 | */ | |
820 | static void | |
821 | release_client_state(struct Client *client_p) | |
822 | { | |
823 | if(client_p->user != NULL) | |
824 | { | |
825 | free_user(client_p->user, client_p); /* try this here */ | |
826 | } | |
827 | if(client_p->serv) | |
828 | { | |
829 | if(client_p->serv->user != NULL) | |
830 | free_user(client_p->serv->user, client_p); | |
831 | if(client_p->serv->fullcaps) | |
832 | MyFree(client_p->serv->fullcaps); | |
833 | MyFree(client_p->serv); | |
834 | } | |
835 | } | |
836 | ||
837 | /* | |
838 | * remove_client_from_list | |
839 | * inputs - point to client to remove | |
840 | * output - NONE | |
841 | * side effects - taken the code from ExitOneClient() for this | |
842 | * and placed it here. - avalon | |
843 | */ | |
844 | static void | |
845 | remove_client_from_list(struct Client *client_p) | |
846 | { | |
847 | s_assert(NULL != client_p); | |
848 | ||
849 | if(client_p == NULL) | |
850 | return; | |
851 | ||
852 | /* A client made with make_client() | |
853 | * is on the unknown_list until removed. | |
854 | * If it =does= happen to exit before its removed from that list | |
855 | * and its =not= on the global_client_list, it will core here. | |
856 | * short circuit that case now -db | |
857 | */ | |
858 | if(client_p->node.prev == NULL && client_p->node.next == NULL) | |
859 | return; | |
860 | ||
861 | dlinkDelete(&client_p->node, &global_client_list); | |
862 | ||
863 | update_client_exit_stats(client_p); | |
864 | } | |
865 | ||
866 | ||
867 | /* | |
868 | * find_person - find person by (nick)name. | |
869 | * inputs - pointer to name | |
870 | * output - return client pointer | |
871 | * side effects - | |
872 | */ | |
873 | struct Client * | |
874 | find_person(const char *name) | |
875 | { | |
876 | struct Client *c2ptr; | |
877 | ||
878 | c2ptr = find_client(name); | |
879 | ||
880 | if(c2ptr && IsPerson(c2ptr)) | |
881 | return (c2ptr); | |
882 | return (NULL); | |
883 | } | |
884 | ||
885 | struct Client * | |
886 | find_named_person(const char *name) | |
887 | { | |
888 | struct Client *c2ptr; | |
889 | ||
890 | c2ptr = find_named_client(name); | |
891 | ||
892 | if(c2ptr && IsPerson(c2ptr)) | |
893 | return (c2ptr); | |
894 | return (NULL); | |
895 | } | |
896 | ||
897 | ||
898 | /* | |
899 | * find_chasing - find the client structure for a nick name (user) | |
900 | * using history mechanism if necessary. If the client is not found, | |
901 | * an error message (NO SUCH NICK) is generated. If the client was found | |
902 | * through the history, chasing will be 1 and otherwise 0. | |
903 | */ | |
904 | struct Client * | |
905 | find_chasing(struct Client *source_p, const char *user, int *chasing) | |
906 | { | |
907 | struct Client *who; | |
908 | ||
909 | if(MyClient(source_p)) | |
910 | who = find_named_person(user); | |
911 | else | |
912 | who = find_person(user); | |
913 | ||
914 | if(chasing) | |
915 | *chasing = 0; | |
916 | ||
917 | if(who || IsDigit(*user)) | |
918 | return who; | |
919 | ||
920 | if(!(who = get_history(user, (long) KILLCHASETIMELIMIT))) | |
921 | { | |
922 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
923 | form_str(ERR_NOSUCHNICK), user); | |
924 | return (NULL); | |
925 | } | |
926 | if(chasing) | |
927 | *chasing = 1; | |
928 | return who; | |
929 | } | |
930 | ||
931 | /* | |
932 | * get_client_name - Return the name of the client | |
933 | * for various tracking and | |
934 | * admin purposes. The main purpose of this function is to | |
935 | * return the "socket host" name of the client, if that | |
936 | * differs from the advertised name (other than case). | |
937 | * But, this can be used to any client structure. | |
938 | * | |
939 | * NOTE 1: | |
940 | * Watch out the allocation of "nbuf", if either source_p->name | |
941 | * or source_p->sockhost gets changed into pointers instead of | |
942 | * directly allocated within the structure... | |
943 | * | |
944 | * NOTE 2: | |
945 | * Function return either a pointer to the structure (source_p) or | |
946 | * to internal buffer (nbuf). *NEVER* use the returned pointer | |
947 | * to modify what it points!!! | |
948 | */ | |
949 | ||
950 | const char * | |
951 | get_client_name(struct Client *client, int showip) | |
952 | { | |
953 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
954 | ||
955 | s_assert(NULL != client); | |
956 | if(client == NULL) | |
957 | return NULL; | |
958 | ||
959 | if(MyConnect(client)) | |
960 | { | |
961 | if(!irccmp(client->name, client->host)) | |
962 | return client->name; | |
963 | ||
964 | if(ConfigFileEntry.hide_spoof_ips && | |
965 | showip == SHOW_IP && IsIPSpoof(client)) | |
966 | showip = MASK_IP; | |
967 | #ifdef HIDE_SERVERS_IPS | |
968 | if(IsAnyServer(client)) | |
969 | showip = MASK_IP; | |
970 | #endif | |
971 | ||
972 | /* And finally, let's get the host information, ip or name */ | |
973 | switch (showip) | |
974 | { | |
975 | case SHOW_IP: | |
976 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
977 | client->name, client->username, | |
978 | client->sockhost); | |
979 | break; | |
980 | case MASK_IP: | |
981 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
982 | client->name, client->username); | |
983 | break; | |
984 | default: | |
985 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
986 | client->name, client->username, client->host); | |
987 | } | |
988 | return nbuf; | |
989 | } | |
990 | ||
991 | /* As pointed out by Adel Mezibra | |
992 | * Neph|l|m@EFnet. Was missing a return here. | |
993 | */ | |
994 | return client->name; | |
995 | } | |
996 | ||
997 | const char * | |
998 | get_server_name(struct Client *target_p, int showip) | |
999 | { | |
1000 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
1001 | ||
1002 | if(target_p == NULL) | |
1003 | return NULL; | |
1004 | ||
1005 | if(!MyConnect(target_p) || !irccmp(target_p->name, target_p->host)) | |
1006 | return target_p->name; | |
1007 | ||
1008 | #ifdef HIDE_SERVERS_IPS | |
1009 | if(EmptyString(target_p->name)) | |
1010 | { | |
1011 | ircsnprintf(nbuf, sizeof(nbuf), "[%s@255.255.255.255]", | |
1012 | target_p->username); | |
1013 | return nbuf; | |
1014 | } | |
1015 | else | |
1016 | return target_p->name; | |
1017 | #endif | |
1018 | ||
1019 | switch (showip) | |
1020 | { | |
1021 | case SHOW_IP: | |
1022 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
1023 | target_p->name, target_p->username, | |
1024 | target_p->sockhost); | |
1025 | break; | |
1026 | ||
1027 | case MASK_IP: | |
1028 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
1029 | target_p->name, target_p->username); | |
1030 | ||
1031 | default: | |
1032 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
1033 | target_p->name, target_p->username, | |
1034 | target_p->host); | |
1035 | } | |
1036 | ||
1037 | return nbuf; | |
1038 | } | |
1039 | ||
1040 | /* log_client_name() | |
1041 | * | |
1042 | * This version is the same as get_client_name, but doesnt contain the | |
1043 | * code that will hide IPs always. This should be used for logfiles. | |
1044 | */ | |
1045 | const char * | |
1046 | log_client_name(struct Client *target_p, int showip) | |
1047 | { | |
1048 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
1049 | ||
1050 | if(target_p == NULL) | |
1051 | return NULL; | |
1052 | ||
1053 | if(MyConnect(target_p)) | |
1054 | { | |
1055 | if(irccmp(target_p->name, target_p->host) == 0) | |
1056 | return target_p->name; | |
1057 | ||
1058 | switch (showip) | |
1059 | { | |
1060 | case SHOW_IP: | |
1061 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, | |
1062 | target_p->username, target_p->sockhost); | |
1063 | break; | |
1064 | ||
1065 | case MASK_IP: | |
1066 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
1067 | target_p->name, target_p->username); | |
1068 | ||
1069 | default: | |
1070 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, | |
1071 | target_p->username, target_p->host); | |
1072 | } | |
1073 | ||
1074 | return nbuf; | |
1075 | } | |
1076 | ||
1077 | return target_p->name; | |
1078 | } | |
1079 | ||
1080 | /* is_remote_connect - Returns whether a server was /connect'ed by a remote | |
1081 | * oper (send notices netwide) */ | |
1082 | int | |
1083 | is_remote_connect(struct Client *client_p) | |
1084 | { | |
1085 | struct Client *oper; | |
1086 | ||
1087 | if (client_p->serv == NULL) | |
1088 | return FALSE; | |
1089 | oper = find_named_person(client_p->serv->by); | |
1090 | return oper != NULL && IsOper(oper) && !MyConnect(oper); | |
1091 | } | |
1092 | ||
1093 | static void | |
1094 | free_exited_clients(void *unused) | |
1095 | { | |
1096 | dlink_node *ptr, *next; | |
1097 | struct Client *target_p; | |
1098 | ||
1099 | DLINK_FOREACH_SAFE(ptr, next, dead_list.head) | |
1100 | { | |
1101 | target_p = ptr->data; | |
1102 | ||
1103 | #ifdef DEBUG_EXITED_CLIENTS | |
1104 | { | |
1105 | struct abort_client *abt; | |
1106 | dlink_node *aptr; | |
1107 | int found = 0; | |
1108 | ||
1109 | DLINK_FOREACH(aptr, abort_list.head) | |
1110 | { | |
1111 | abt = aptr->data; | |
1112 | if(abt->client == target_p) | |
1113 | { | |
1114 | s_assert(0); | |
1115 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1116 | "On abort_list: %s stat: %u flags: %u/%u handler: %c", | |
1117 | target_p->name, (unsigned int) target_p->status, | |
1118 | target_p->flags, target_p->flags2, target_p->handler); | |
1119 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1120 | "Please report this to the charybdis developers!"); |
212380e3 AC |
1121 | found++; |
1122 | } | |
1123 | } | |
1124 | ||
1125 | if(found) | |
1126 | { | |
1127 | dlinkDestroy(ptr, &dead_list); | |
1128 | continue; | |
1129 | } | |
1130 | } | |
1131 | #endif | |
1132 | ||
1133 | if(ptr->data == NULL) | |
1134 | { | |
1135 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1136 | "Warning: null client on dead_list!"); | |
1137 | dlinkDestroy(ptr, &dead_list); | |
1138 | continue; | |
1139 | } | |
1140 | release_client_state(target_p); | |
1141 | free_client(target_p); | |
1142 | dlinkDestroy(ptr, &dead_list); | |
1143 | } | |
1144 | ||
1145 | #ifdef DEBUG_EXITED_CLIENTS | |
1146 | DLINK_FOREACH_SAFE(ptr, next, dead_remote_list.head) | |
1147 | { | |
1148 | target_p = ptr->data; | |
1149 | ||
1150 | if(ptr->data == NULL) | |
1151 | { | |
1152 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1153 | "Warning: null client on dead_list!"); | |
1154 | dlinkDestroy(ptr, &dead_list); | |
1155 | continue; | |
1156 | } | |
1157 | release_client_state(target_p); | |
1158 | free_client(target_p); | |
1159 | dlinkDestroy(ptr, &dead_remote_list); | |
1160 | } | |
1161 | #endif | |
1162 | ||
1163 | } | |
1164 | ||
1165 | /* | |
1166 | ** Recursively send QUITs and SQUITs for source_p and all its dependent clients | |
1167 | ** and servers to those servers that need them. A server needs the client | |
1168 | ** QUITs if it can't figure them out from the SQUIT (ie pre-TS4) or if it | |
1169 | ** isn't getting the SQUIT because of @#(*&@)# hostmasking. With TS4, once | |
1170 | ** a link gets a SQUIT, it doesn't need any QUIT/SQUITs for clients depending | |
1171 | ** on that one -orabidoo | |
1172 | */ | |
1173 | static void | |
1174 | recurse_send_quits(struct Client *client_p, struct Client *source_p, | |
1175 | struct Client *to, const char *comment1, | |
1176 | const char *comment) | |
1177 | { | |
1178 | struct Client *target_p; | |
1179 | dlink_node *ptr, *ptr_next; | |
1180 | /* If this server can handle quit storm (QS) removal | |
1181 | * of dependents, just send the SQUIT | |
1182 | */ | |
1183 | ||
1184 | if(IsCapable(to, CAP_QS)) | |
1185 | { | |
1186 | sendto_one(to, "SQUIT %s :%s", | |
1187 | get_id(source_p, to), comment); | |
1188 | } | |
1189 | else | |
1190 | { | |
1191 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1192 | { | |
1193 | target_p = ptr->data; | |
1194 | sendto_one(to, ":%s QUIT :%s", target_p->name, comment1); | |
1195 | } | |
1196 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) | |
1197 | { | |
1198 | target_p = ptr->data; | |
1199 | recurse_send_quits(client_p, target_p, to, comment1, comment); | |
1200 | } | |
1201 | sendto_one(to, "SQUIT %s :%s", source_p->name, comment); | |
1202 | } | |
1203 | } | |
1204 | ||
1205 | /* | |
1206 | ** Remove all clients that depend on source_p; assumes all (S)QUITs have | |
1207 | ** already been sent. we make sure to exit a server's dependent clients | |
1208 | ** and servers before the server itself; exit_one_client takes care of | |
1209 | ** actually removing things off llists. tweaked from +CSr31 -orabidoo | |
1210 | */ | |
1211 | /* | |
1212 | * added sanity test code.... source_p->serv might be NULL... | |
1213 | */ | |
1214 | static void | |
1215 | recurse_remove_clients(struct Client *source_p, const char *comment) | |
1216 | { | |
1217 | struct Client *target_p; | |
1218 | dlink_node *ptr, *ptr_next; | |
1219 | ||
1220 | if(IsMe(source_p)) | |
1221 | return; | |
1222 | ||
1223 | if(source_p->serv == NULL) /* oooops. uh this is actually a major bug */ | |
1224 | return; | |
1225 | ||
1226 | /* this is very ugly, but it saves cpu :P */ | |
1227 | if(ConfigFileEntry.nick_delay > 0) | |
1228 | { | |
1229 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1230 | { | |
1231 | target_p = ptr->data; | |
1232 | target_p->flags |= FLAGS_KILLED; | |
1233 | add_nd_entry(target_p->name); | |
1234 | ||
1235 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1236 | exit_remote_client(NULL, target_p, &me, comment); | |
1237 | } | |
1238 | } | |
1239 | else | |
1240 | { | |
1241 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1242 | { | |
1243 | target_p = ptr->data; | |
1244 | target_p->flags |= FLAGS_KILLED; | |
1245 | ||
1246 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1247 | exit_remote_client(NULL, target_p, &me, comment); | |
1248 | } | |
1249 | } | |
1250 | ||
1251 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) | |
1252 | { | |
1253 | target_p = ptr->data; | |
1254 | recurse_remove_clients(target_p, comment); | |
1255 | qs_server(NULL, target_p, &me, comment); | |
1256 | } | |
1257 | } | |
1258 | ||
1259 | /* | |
1260 | ** Remove *everything* that depends on source_p, from all lists, and sending | |
1261 | ** all necessary QUITs and SQUITs. source_p itself is still on the lists, | |
1262 | ** and its SQUITs have been sent except for the upstream one -orabidoo | |
1263 | */ | |
1264 | static void | |
1265 | remove_dependents(struct Client *client_p, | |
1266 | struct Client *source_p, | |
1267 | struct Client *from, const char *comment, const char *comment1) | |
1268 | { | |
1269 | struct Client *to; | |
1270 | dlink_node *ptr, *next; | |
1271 | ||
1272 | DLINK_FOREACH_SAFE(ptr, next, serv_list.head) | |
1273 | { | |
1274 | to = ptr->data; | |
1275 | ||
1276 | if(IsMe(to) || to == source_p->from || | |
1277 | (to == client_p && IsCapable(to, CAP_QS))) | |
1278 | continue; | |
1279 | ||
1280 | recurse_send_quits(client_p, source_p, to, comment1, comment); | |
1281 | } | |
1282 | ||
1283 | recurse_remove_clients(source_p, comment1); | |
1284 | } | |
1285 | ||
1286 | void | |
1287 | exit_aborted_clients(void *unused) | |
1288 | { | |
1289 | struct abort_client *abt; | |
1290 | dlink_node *ptr, *next; | |
1291 | DLINK_FOREACH_SAFE(ptr, next, abort_list.head) | |
1292 | { | |
1293 | abt = ptr->data; | |
1294 | ||
1295 | #ifdef DEBUG_EXITED_CLIENTS | |
1296 | { | |
1297 | if(dlinkFind(abt->client, &dead_list)) | |
1298 | { | |
1299 | s_assert(0); | |
1300 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1301 | "On dead_list: %s stat: %u flags: %u/%u handler: %c", | |
1302 | abt->client->name, (unsigned int) abt->client->status, | |
1303 | abt->client->flags, abt->client->flags2, abt->client->handler); | |
1304 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1305 | "Please report this to the charybdis developers!"); |
212380e3 AC |
1306 | continue; |
1307 | } | |
1308 | } | |
1309 | #endif | |
1310 | ||
1311 | s_assert(*((unsigned long*)abt->client) != 0xdeadbeef); /* This is lame but its a debug thing */ | |
1312 | dlinkDelete(ptr, &abort_list); | |
1313 | ||
1314 | if(IsAnyServer(abt->client)) | |
1315 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1316 | "Closing link to %s: %s", | |
1317 | get_server_name(abt->client, HIDE_IP), abt->notice); | |
1318 | ||
1319 | /* its no longer on abort list - we *must* remove | |
1320 | * FLAGS_CLOSING otherwise exit_client() will not run --fl | |
1321 | */ | |
1322 | abt->client->flags &= ~FLAGS_CLOSING; | |
1323 | exit_client(abt->client, abt->client, &me, abt->notice); | |
1324 | MyFree(abt); | |
1325 | } | |
1326 | } | |
1327 | ||
1328 | ||
1329 | /* | |
1330 | * dead_link - Adds client to a list of clients that need an exit_client() | |
1331 | * | |
1332 | */ | |
1333 | void | |
1334 | dead_link(struct Client *client_p) | |
1335 | { | |
1336 | struct abort_client *abt; | |
1337 | ||
1338 | s_assert(!IsMe(client_p)); | |
1339 | if(IsDead(client_p) || IsClosing(client_p) || IsMe(client_p)) | |
1340 | return; | |
1341 | ||
1342 | abt = (struct abort_client *) MyMalloc(sizeof(struct abort_client)); | |
1343 | ||
1344 | if(client_p->flags & FLAGS_SENDQEX) | |
1345 | strlcpy(abt->notice, "Max SendQ exceeded", sizeof(abt->notice)); | |
1346 | else | |
1347 | ircsnprintf(abt->notice, sizeof(abt->notice), "Write error: %s", strerror(errno)); | |
1348 | ||
1349 | abt->client = client_p; | |
1350 | SetIOError(client_p); | |
1351 | SetDead(client_p); | |
1352 | SetClosing(client_p); | |
1353 | dlinkAdd(abt, &abt->node, &abort_list); | |
1354 | } | |
1355 | ||
1356 | ||
1357 | /* This does the remove of the user from channels..local or remote */ | |
1358 | static inline void | |
1359 | exit_generic_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1360 | const char *comment) | |
1361 | { | |
1362 | dlink_node *ptr, *next_ptr; | |
1363 | ||
1364 | if(IsOper(source_p)) | |
1365 | dlinkFindDestroy(source_p, &oper_list); | |
1366 | ||
1367 | sendto_common_channels_local(source_p, ":%s!%s@%s QUIT :%s", | |
1368 | source_p->name, | |
1369 | source_p->username, source_p->host, comment); | |
1370 | ||
1371 | remove_user_from_channels(source_p); | |
1372 | ||
1373 | /* Should not be in any channels now */ | |
1374 | s_assert(source_p->user->channel.head == NULL); | |
1375 | ||
1376 | /* Clean up invitefield */ | |
1377 | DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->user->invited.head) | |
1378 | { | |
1379 | del_invite(ptr->data, source_p); | |
1380 | } | |
1381 | ||
1382 | /* Clean up allow lists */ | |
1383 | del_all_accepts(source_p); | |
1384 | ||
1385 | add_history(source_p, 0); | |
1386 | off_history(source_p); | |
1387 | ||
1388 | monitor_signoff(source_p); | |
1389 | ||
1390 | if(has_id(source_p)) | |
1391 | del_from_id_hash(source_p->id, source_p); | |
1392 | ||
1393 | del_from_hostname_hash(source_p->orighost, source_p); | |
1394 | del_from_client_hash(source_p->name, source_p); | |
1395 | remove_client_from_list(source_p); | |
1396 | } | |
1397 | ||
1398 | /* | |
1399 | * Assumes IsPerson(source_p) && !MyConnect(source_p) | |
1400 | */ | |
1401 | ||
1402 | static int | |
1403 | exit_remote_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1404 | const char *comment) | |
1405 | { | |
1406 | exit_generic_client(client_p, source_p, from, comment); | |
1407 | ||
1408 | if(source_p->servptr && source_p->servptr->serv) | |
1409 | { | |
1410 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users); | |
1411 | } | |
1412 | ||
1413 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1414 | { | |
1415 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1416 | ":%s QUIT :%s", use_id(source_p), comment); | |
1417 | sendto_server(client_p, NULL, NOCAPS, CAP_TS6, | |
1418 | ":%s QUIT :%s", source_p->name, comment); | |
1419 | } | |
1420 | ||
1421 | SetDead(source_p); | |
1422 | #ifdef DEBUG_EXITED_CLIENTS | |
1423 | dlinkAddAlloc(source_p, &dead_remote_list); | |
1424 | #else | |
1425 | dlinkAddAlloc(source_p, &dead_list); | |
1426 | #endif | |
1427 | return(CLIENT_EXITED); | |
1428 | } | |
1429 | ||
1430 | /* | |
1431 | * This assumes IsUnknown(source_p) == TRUE and MyConnect(source_p) == TRUE | |
1432 | */ | |
1433 | ||
1434 | static int | |
1435 | exit_unknown_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1436 | const char *comment) | |
1437 | { | |
1438 | delete_auth_queries(source_p); | |
1439 | client_flush_input(source_p); | |
54015b5f | 1440 | del_unknown_ip(source_p); |
212380e3 AC |
1441 | dlinkDelete(&source_p->localClient->tnode, &unknown_list); |
1442 | ||
1443 | if(!IsIOError(source_p)) | |
dd12a19c JT |
1444 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", |
1445 | source_p->user != NULL ? source_p->host : "127.0.0.1", | |
1446 | comment); | |
212380e3 AC |
1447 | |
1448 | close_connection(source_p); | |
1449 | ||
1450 | if(has_id(source_p)) | |
1451 | del_from_id_hash(source_p->id, source_p); | |
1452 | ||
1453 | del_from_hostname_hash(source_p->host, source_p); | |
1454 | del_from_client_hash(source_p->name, source_p); | |
1455 | remove_client_from_list(source_p); | |
212380e3 AC |
1456 | SetDead(source_p); |
1457 | dlinkAddAlloc(source_p, &dead_list); | |
1458 | ||
1459 | /* Note that we don't need to add unknowns to the dead_list */ | |
1460 | return(CLIENT_EXITED); | |
1461 | } | |
1462 | ||
1463 | static int | |
1464 | exit_remote_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1465 | const char *comment) | |
1466 | { | |
1467 | static char comment1[(HOSTLEN*2)+2]; | |
1468 | static char newcomment[BUFSIZE]; | |
1469 | struct Client *target_p; | |
1470 | ||
1471 | if(ConfigServerHide.flatten_links) | |
1472 | strcpy(comment1, "*.net *.split"); | |
1473 | else | |
1474 | { | |
66c8fdd2 | 1475 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1476 | strcat(comment1, " "); |
1477 | strcat(comment1, source_p->name); | |
1478 | } | |
1479 | if (IsPerson(from)) | |
1480 | ircsnprintf(newcomment, sizeof(newcomment), "by %s: %s", | |
1481 | from->name, comment); | |
1482 | ||
1483 | if(source_p->serv != NULL) | |
1484 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1485 | ||
1486 | if(source_p->servptr && source_p->servptr->serv) | |
1487 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1488 | else | |
1489 | s_assert(0); | |
1490 | ||
1491 | dlinkFindDestroy(source_p, &global_serv_list); | |
1492 | target_p = source_p->from; | |
1493 | ||
1494 | if(target_p != NULL && IsServer(target_p) && target_p != client_p && | |
1495 | !IsMe(target_p) && (source_p->flags & FLAGS_KILLED) == 0) | |
1496 | { | |
1497 | sendto_one(target_p, ":%s SQUIT %s :%s", | |
1498 | get_id(from, target_p), get_id(source_p, target_p), | |
1499 | comment); | |
1500 | } | |
1501 | ||
1502 | if(has_id(source_p)) | |
1503 | del_from_id_hash(source_p->id, source_p); | |
1504 | ||
1505 | del_from_client_hash(source_p->name, source_p); | |
1506 | remove_client_from_list(source_p); | |
994544c2 | 1507 | scache_split(source_p->serv->nameinfo); |
212380e3 AC |
1508 | |
1509 | SetDead(source_p); | |
1510 | #ifdef DEBUG_EXITED_CLIENTS | |
1511 | dlinkAddAlloc(source_p, &dead_remote_list); | |
1512 | #else | |
1513 | dlinkAddAlloc(source_p, &dead_list); | |
1514 | #endif | |
1515 | return 0; | |
1516 | } | |
1517 | ||
1518 | static int | |
1519 | qs_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1520 | const char *comment) | |
1521 | { | |
1522 | struct Client *target_p; | |
1523 | ||
1524 | if(source_p->servptr && source_p->servptr->serv) | |
1525 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1526 | else | |
1527 | s_assert(0); | |
1528 | ||
1529 | dlinkFindDestroy(source_p, &global_serv_list); | |
1530 | target_p = source_p->from; | |
1531 | ||
1532 | if(has_id(source_p)) | |
1533 | del_from_id_hash(source_p->id, source_p); | |
1534 | ||
1535 | del_from_client_hash(source_p->name, source_p); | |
1536 | remove_client_from_list(source_p); | |
1537 | ||
1538 | SetDead(source_p); | |
1539 | dlinkAddAlloc(source_p, &dead_list); | |
1540 | return 0; | |
1541 | } | |
1542 | ||
1543 | static int | |
1544 | exit_local_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1545 | const char *comment) | |
1546 | { | |
1547 | static char comment1[(HOSTLEN*2)+2]; | |
1548 | static char newcomment[BUFSIZE]; | |
1549 | unsigned int sendk, recvk; | |
1550 | ||
1551 | dlinkDelete(&source_p->localClient->tnode, &serv_list); | |
1552 | dlinkFindDestroy(source_p, &global_serv_list); | |
1553 | ||
1554 | unset_chcap_usage_counts(source_p); | |
1555 | sendk = source_p->localClient->sendK; | |
1556 | recvk = source_p->localClient->receiveK; | |
1557 | ||
1558 | /* Always show source here, so the server notices show | |
1559 | * which side initiated the split -- jilles | |
1560 | */ | |
1561 | ircsnprintf(newcomment, sizeof(newcomment), "by %s: %s", | |
1562 | from == source_p ? me.name : from->name, comment); | |
1563 | if (!IsIOError(source_p)) | |
1564 | sendto_one(source_p, "SQUIT %s :%s", use_id(source_p), | |
1565 | newcomment); | |
1566 | if(client_p != NULL && source_p != client_p && !IsIOError(source_p)) | |
1567 | { | |
1568 | sendto_one(source_p, "ERROR :Closing Link: 127.0.0.1 %s (%s)", | |
1569 | source_p->name, comment); | |
1570 | } | |
1571 | ||
212380e3 AC |
1572 | if(source_p->servptr && source_p->servptr->serv) |
1573 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1574 | else | |
1575 | s_assert(0); | |
1576 | ||
1577 | ||
1578 | close_connection(source_p); | |
1579 | ||
1580 | if(ConfigServerHide.flatten_links) | |
1581 | strcpy(comment1, "*.net *.split"); | |
1582 | else | |
1583 | { | |
66c8fdd2 | 1584 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1585 | strcat(comment1, " "); |
1586 | strcat(comment1, source_p->name); | |
1587 | } | |
1588 | ||
1589 | if(source_p->serv != NULL) | |
1590 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1591 | ||
1592 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s was connected" | |
1593 | " for %ld seconds. %d/%d sendK/recvK.", | |
1594 | source_p->name, CurrentTime - source_p->localClient->firsttime, sendk, recvk); | |
1595 | ||
1596 | ilog(L_SERVER, "%s was connected for %ld seconds. %d/%d sendK/recvK.", | |
1597 | source_p->name, CurrentTime - source_p->localClient->firsttime, sendk, recvk); | |
1598 | ||
1599 | if(has_id(source_p)) | |
1600 | del_from_id_hash(source_p->id, source_p); | |
1601 | ||
1602 | del_from_client_hash(source_p->name, source_p); | |
1603 | remove_client_from_list(source_p); | |
994544c2 | 1604 | scache_split(source_p->serv->nameinfo); |
212380e3 AC |
1605 | |
1606 | SetDead(source_p); | |
1607 | dlinkAddAlloc(source_p, &dead_list); | |
1608 | return 0; | |
1609 | } | |
1610 | ||
1611 | ||
1612 | /* | |
1613 | * This assumes IsPerson(source_p) == TRUE && MyConnect(source_p) == TRUE | |
1614 | */ | |
1615 | ||
1616 | static int | |
1617 | exit_local_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1618 | const char *comment) | |
1619 | { | |
1620 | unsigned long on_for; | |
1621 | ||
1622 | exit_generic_client(client_p, source_p, from, comment); | |
1623 | clear_monitor(source_p); | |
1624 | ||
1625 | s_assert(IsPerson(source_p)); | |
1626 | client_flush_input(source_p); | |
1627 | dlinkDelete(&source_p->localClient->tnode, &lclient_list); | |
1628 | dlinkDelete(&source_p->lnode, &me.serv->users); | |
1629 | ||
1630 | if(IsOper(source_p)) | |
1631 | dlinkFindDestroy(source_p, &local_oper_list); | |
1632 | ||
1633 | sendto_realops_snomask(SNO_CCONN, L_ALL, | |
1634 | "Client exiting: %s (%s@%s) [%s] [%s]", | |
1635 | source_p->name, | |
1636 | source_p->username, source_p->host, comment, | |
1637 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255"); | |
1638 | ||
1639 | sendto_realops_snomask(SNO_CCONNEXT, L_ALL, | |
1640 | "CLIEXIT %s %s %s %s 0 %s", | |
1641 | source_p->name, source_p->username, source_p->host, | |
1642 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255", | |
1643 | comment); | |
1644 | ||
1645 | on_for = CurrentTime - source_p->localClient->firsttime; | |
1646 | ||
1647 | ilog(L_USER, "%s (%3lu:%02lu:%02lu): %s!%s@%s %d/%d", | |
1648 | myctime(CurrentTime), on_for / 3600, | |
1649 | (on_for % 3600) / 60, on_for % 60, | |
1650 | source_p->name, source_p->username, source_p->host, | |
1651 | source_p->localClient->sendK, source_p->localClient->receiveK); | |
1652 | ||
1653 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", source_p->host, comment); | |
1654 | close_connection(source_p); | |
1655 | ||
1656 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1657 | { | |
1658 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1659 | ":%s QUIT :%s", use_id(source_p), comment); | |
1660 | sendto_server(client_p, NULL, NOCAPS, CAP_TS6, | |
1661 | ":%s QUIT :%s", source_p->name, comment); | |
1662 | } | |
1663 | ||
1664 | SetDead(source_p); | |
1665 | dlinkAddAlloc(source_p, &dead_list); | |
1666 | return(CLIENT_EXITED); | |
1667 | } | |
1668 | ||
1669 | ||
1670 | /* | |
1671 | ** exit_client - This is old "m_bye". Name changed, because this is not a | |
1672 | ** protocol function, but a general server utility function. | |
1673 | ** | |
1674 | ** This function exits a client of *any* type (user, server, etc) | |
1675 | ** from this server. Also, this generates all necessary prototol | |
1676 | ** messages that this exit may cause. | |
1677 | ** | |
1678 | ** 1) If the client is a local client, then this implicitly | |
1679 | ** exits all other clients depending on this connection (e.g. | |
1680 | ** remote clients having 'from'-field that points to this. | |
1681 | ** | |
1682 | ** 2) If the client is a remote client, then only this is exited. | |
1683 | ** | |
1684 | ** For convenience, this function returns a suitable value for | |
1685 | ** m_function return value: | |
1686 | ** | |
1687 | ** CLIENT_EXITED if (client_p == source_p) | |
1688 | ** 0 if (client_p != source_p) | |
1689 | */ | |
1690 | int | |
1691 | exit_client(struct Client *client_p, /* The local client originating the | |
1692 | * exit or NULL, if this exit is | |
1693 | * generated by this server for | |
1694 | * internal reasons. | |
1695 | * This will not get any of the | |
1696 | * generated messages. */ | |
1697 | struct Client *source_p, /* Client exiting */ | |
1698 | struct Client *from, /* Client firing off this Exit, | |
1699 | * never NULL! */ | |
1700 | const char *comment /* Reason for the exit */ | |
1701 | ) | |
1702 | { | |
1703 | hook_data_client_exit hdata; | |
1704 | if(IsClosing(source_p)) | |
1705 | return -1; | |
1706 | ||
1707 | /* note, this HAS to be here, when we exit a client we attempt to | |
1708 | * send them data, if this generates a write error we must *not* add | |
1709 | * them to the abort list --fl | |
1710 | */ | |
1711 | SetClosing(source_p); | |
1712 | ||
1713 | hdata.local_link = client_p; | |
1714 | hdata.target = source_p; | |
1715 | hdata.from = from; | |
1716 | hdata.comment = comment; | |
1717 | call_hook(h_client_exit, &hdata); | |
1718 | ||
1719 | if(MyConnect(source_p)) | |
1720 | { | |
1721 | /* Local clients of various types */ | |
1722 | if(IsPerson(source_p)) | |
1723 | return exit_local_client(client_p, source_p, from, comment); | |
1724 | else if(IsServer(source_p)) | |
1725 | return exit_local_server(client_p, source_p, from, comment); | |
1726 | /* IsUnknown || IsConnecting || IsHandShake */ | |
1727 | else if(!IsReject(source_p)) | |
1728 | return exit_unknown_client(client_p, source_p, from, comment); | |
1729 | } | |
1730 | else | |
1731 | { | |
1732 | /* Remotes */ | |
1733 | if(IsPerson(source_p)) | |
1734 | return exit_remote_client(client_p, source_p, from, comment); | |
1735 | else if(IsServer(source_p)) | |
1736 | return exit_remote_server(client_p, source_p, from, comment); | |
1737 | } | |
1738 | ||
1739 | return -1; | |
1740 | } | |
1741 | ||
1742 | /* | |
1743 | * Count up local client memory | |
1744 | */ | |
1745 | ||
1746 | /* XXX one common Client list now */ | |
1747 | void | |
1748 | count_local_client_memory(size_t * count, size_t * local_client_memory_used) | |
1749 | { | |
1750 | size_t lusage; | |
1751 | BlockHeapUsage(lclient_heap, count, NULL, &lusage); | |
1752 | *local_client_memory_used = lusage + (*count * (sizeof(MemBlock) + sizeof(struct Client))); | |
1753 | } | |
1754 | ||
1755 | /* | |
1756 | * Count up remote client memory | |
1757 | */ | |
1758 | void | |
1759 | count_remote_client_memory(size_t * count, size_t * remote_client_memory_used) | |
1760 | { | |
1761 | size_t lcount, rcount; | |
1762 | BlockHeapUsage(lclient_heap, &lcount, NULL, NULL); | |
1763 | BlockHeapUsage(client_heap, &rcount, NULL, NULL); | |
1764 | *count = rcount - lcount; | |
1765 | *remote_client_memory_used = *count * (sizeof(MemBlock) + sizeof(struct Client)); | |
1766 | } | |
1767 | ||
1768 | ||
1769 | /* | |
1770 | * accept processing, this adds a form of "caller ID" to ircd | |
1771 | * | |
1772 | * If a client puts themselves into "caller ID only" mode, | |
1773 | * only clients that match a client pointer they have put on | |
1774 | * the accept list will be allowed to message them. | |
1775 | * | |
1776 | * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ] | |
1777 | * | |
1778 | * [target.allow_list] -> [ source1 ] -> [source2 ] | |
1779 | * | |
1780 | * i.e. a target will have a link list of source pointers it will allow | |
1781 | * each source client then has a back pointer pointing back | |
1782 | * to the client that has it on its accept list. | |
1783 | * This allows for exit_one_client to remove these now bogus entries | |
1784 | * from any client having an accept on them. | |
1785 | */ | |
1786 | /* | |
1787 | * del_all_accepts | |
1788 | * | |
1789 | * inputs - pointer to exiting client | |
1790 | * output - NONE | |
1791 | * side effects - Walk through given clients allow_list and on_allow_list | |
1792 | * remove all references to this client | |
1793 | */ | |
1794 | void | |
1795 | del_all_accepts(struct Client *client_p) | |
1796 | { | |
1797 | dlink_node *ptr; | |
1798 | dlink_node *next_ptr; | |
1799 | struct Client *target_p; | |
1800 | ||
1801 | if(MyClient(client_p) && client_p->localClient->allow_list.head) | |
1802 | { | |
1803 | /* clear this clients accept list, and remove them from | |
1804 | * everyones on_accept_list | |
1805 | */ | |
1806 | DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->allow_list.head) | |
1807 | { | |
1808 | target_p = ptr->data; | |
1809 | dlinkFindDestroy(client_p, &target_p->on_allow_list); | |
1810 | dlinkDestroy(ptr, &client_p->localClient->allow_list); | |
1811 | } | |
1812 | } | |
1813 | ||
1814 | /* remove this client from everyones accept list */ | |
1815 | DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) | |
1816 | { | |
1817 | target_p = ptr->data; | |
1818 | dlinkFindDestroy(client_p, &target_p->localClient->allow_list); | |
1819 | dlinkDestroy(ptr, &client_p->on_allow_list); | |
1820 | } | |
1821 | } | |
1822 | ||
1823 | /* | |
1824 | * show_ip() - asks if the true IP shoudl be shown when source is | |
1825 | * askin for info about target | |
1826 | * | |
1827 | * Inputs - source_p who is asking | |
1828 | * - target_p who do we want the info on | |
1829 | * Output - returns 1 if clear IP can be showed, otherwise 0 | |
1830 | * Side Effects - none | |
1831 | */ | |
1832 | ||
1833 | int | |
1834 | show_ip(struct Client *source_p, struct Client *target_p) | |
1835 | { | |
1836 | if(IsAnyServer(target_p)) | |
1837 | { | |
1838 | #ifndef HIDE_SERVERS_IPS | |
1839 | if(source_p == NULL || IsOper(source_p)) | |
1840 | return 1; | |
1841 | #endif | |
1842 | return 0; | |
1843 | } | |
1844 | else if(IsIPSpoof(target_p)) | |
1845 | { | |
1846 | /* source == NULL indicates message is being sent | |
1847 | * to local opers. | |
1848 | */ | |
1849 | if(!ConfigFileEntry.hide_spoof_ips && | |
1850 | (source_p == NULL || MyOper(source_p))) | |
1851 | return 1; | |
1852 | return 0; | |
1853 | } | |
1854 | else if(IsDynSpoof(target_p) && (source_p != NULL && !IsOper(source_p))) | |
1855 | return 0; | |
1856 | else | |
1857 | return 1; | |
1858 | } | |
1859 | ||
1860 | int | |
1861 | show_ip_conf(struct ConfItem *aconf, struct Client *source_p) | |
1862 | { | |
1863 | if(IsConfDoSpoofIp(aconf)) | |
1864 | { | |
1865 | if(!ConfigFileEntry.hide_spoof_ips && MyOper(source_p)) | |
1866 | return 1; | |
1867 | ||
1868 | return 0; | |
1869 | } | |
1870 | else | |
1871 | return 1; | |
1872 | } | |
1873 | ||
1874 | /* | |
1875 | * initUser | |
1876 | * | |
1877 | * inputs - none | |
1878 | * outputs - none | |
1879 | * | |
1880 | * side effects - Creates a block heap for struct Users | |
1881 | * | |
1882 | */ | |
1883 | static BlockHeap *user_heap; | |
1884 | void | |
1885 | initUser(void) | |
1886 | { | |
1887 | user_heap = BlockHeapCreate(sizeof(struct User), USER_HEAP_SIZE); | |
1888 | if(!user_heap) | |
1889 | outofmemory(); | |
1890 | } | |
1891 | ||
1892 | /* | |
1893 | * make_user | |
1894 | * | |
1895 | * inputs - pointer to client struct | |
1896 | * output - pointer to struct User | |
1897 | * side effects - add's an User information block to a client | |
1898 | * if it was not previously allocated. | |
1899 | */ | |
1900 | struct User * | |
1901 | make_user(struct Client *client_p) | |
1902 | { | |
1903 | struct User *user; | |
1904 | ||
1905 | user = client_p->user; | |
1906 | if(!user) | |
1907 | { | |
1908 | user = (struct User *) BlockHeapAlloc(user_heap); | |
1909 | user->refcnt = 1; | |
1910 | client_p->user = user; | |
1911 | } | |
1912 | return user; | |
1913 | } | |
1914 | ||
1915 | /* | |
1916 | * make_server | |
1917 | * | |
1918 | * inputs - pointer to client struct | |
1919 | * output - pointer to server_t | |
1920 | * side effects - add's an Server information block to a client | |
1921 | * if it was not previously allocated. | |
1922 | */ | |
1923 | server_t * | |
1924 | make_server(struct Client *client_p) | |
1925 | { | |
1926 | server_t *serv = client_p->serv; | |
1927 | ||
1928 | if(!serv) | |
1929 | { | |
1930 | serv = (server_t *) MyMalloc(sizeof(server_t)); | |
1931 | client_p->serv = serv; | |
1932 | } | |
1933 | return client_p->serv; | |
1934 | } | |
1935 | ||
1936 | /* | |
1937 | * free_user | |
1938 | * | |
1939 | * inputs - pointer to user struct | |
1940 | * - pointer to client struct | |
1941 | * output - none | |
1942 | * side effects - Decrease user reference count by one and release block, | |
1943 | * if count reaches 0 | |
1944 | */ | |
1945 | void | |
1946 | free_user(struct User *user, struct Client *client_p) | |
1947 | { | |
1948 | if(--user->refcnt <= 0) | |
1949 | { | |
1950 | if(user->away) | |
1951 | MyFree((char *) user->away); | |
1952 | /* | |
1953 | * sanity check | |
1954 | */ | |
1955 | if(user->refcnt < 0 || user->invited.head || user->channel.head) | |
1956 | { | |
1957 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1958 | "* %#lx user (%s!%s@%s) %#lx %#lx %#lx %lu %d *", | |
1959 | (unsigned long) client_p, | |
1960 | client_p ? client_p-> | |
1961 | name : "<noname>", | |
1962 | client_p->username, | |
1963 | client_p->host, | |
1964 | (unsigned long) user, | |
1965 | (unsigned long) user->invited.head, | |
1966 | (unsigned long) user->channel.head, | |
1967 | dlink_list_length(&user->channel), | |
1968 | user->refcnt); | |
1969 | s_assert(!user->refcnt); | |
1970 | s_assert(!user->invited.head); | |
1971 | s_assert(!user->channel.head); | |
1972 | } | |
1973 | ||
1974 | BlockHeapFree(user_heap, user); | |
1975 | } | |
1976 | } | |
1977 | ||
1978 | void | |
1979 | init_uid(void) | |
1980 | { | |
1981 | int i; | |
1982 | ||
1983 | for(i = 0; i < 3; i++) | |
1984 | current_uid[i] = me.id[i]; | |
1985 | ||
1986 | for(i = 3; i < 9; i++) | |
1987 | current_uid[i] = 'A'; | |
1988 | ||
1989 | current_uid[9] = '\0'; | |
1990 | } | |
1991 | ||
1992 | ||
1993 | char * | |
1994 | generate_uid(void) | |
1995 | { | |
1996 | int i; | |
1997 | ||
1998 | for(i = 8; i > 3; i--) | |
1999 | { | |
2000 | if(current_uid[i] == 'Z') | |
2001 | { | |
2002 | current_uid[i] = '0'; | |
2003 | return current_uid; | |
2004 | } | |
2005 | else if(current_uid[i] != '9') | |
2006 | { | |
2007 | current_uid[i]++; | |
2008 | return current_uid; | |
2009 | } | |
2010 | else | |
2011 | current_uid[i] = 'A'; | |
2012 | } | |
2013 | ||
2014 | /* if this next if() triggers, we're fucked. */ | |
2015 | if(current_uid[3] == 'Z') | |
2016 | { | |
2017 | current_uid[i] = 'A'; | |
2018 | s_assert(0); | |
2019 | } | |
2020 | else | |
2021 | current_uid[i]++; | |
2022 | ||
2023 | return current_uid; | |
2024 | } | |
2025 | ||
2026 | /* | |
2027 | * close_connection | |
2028 | * Close the physical connection. This function must make | |
2029 | * MyConnect(client_p) == FALSE, and set client_p->from == NULL. | |
2030 | */ | |
2031 | void | |
2032 | close_connection(struct Client *client_p) | |
2033 | { | |
2034 | s_assert(client_p != NULL); | |
2035 | if(client_p == NULL) | |
2036 | return; | |
2037 | ||
2038 | s_assert(MyConnect(client_p)); | |
2039 | if(!MyConnect(client_p)) | |
2040 | return; | |
2041 | ||
2042 | if(IsServer(client_p)) | |
2043 | { | |
2044 | struct server_conf *server_p; | |
2045 | ||
2046 | ServerStats->is_sv++; | |
2047 | ServerStats->is_sbs += client_p->localClient->sendB; | |
2048 | ServerStats->is_sbr += client_p->localClient->receiveB; | |
2049 | ServerStats->is_sks += client_p->localClient->sendK; | |
2050 | ServerStats->is_skr += client_p->localClient->receiveK; | |
2051 | ServerStats->is_sti += CurrentTime - client_p->localClient->firsttime; | |
2052 | if(ServerStats->is_sbs > 2047) | |
2053 | { | |
2054 | ServerStats->is_sks += (ServerStats->is_sbs >> 10); | |
2055 | ServerStats->is_sbs &= 0x3ff; | |
2056 | } | |
2057 | if(ServerStats->is_sbr > 2047) | |
2058 | { | |
2059 | ServerStats->is_skr += (ServerStats->is_sbr >> 10); | |
2060 | ServerStats->is_sbr &= 0x3ff; | |
2061 | } | |
2062 | ||
2063 | /* | |
2064 | * If the connection has been up for a long amount of time, schedule | |
2065 | * a 'quick' reconnect, else reset the next-connect cycle. | |
2066 | */ | |
2067 | if((server_p = find_server_conf(client_p->name)) != NULL) | |
2068 | { | |
2069 | /* | |
2070 | * Reschedule a faster reconnect, if this was a automatically | |
2071 | * connected configuration entry. (Note that if we have had | |
2072 | * a rehash in between, the status has been changed to | |
2073 | * CONF_ILLEGAL). But only do this if it was a "good" link. | |
2074 | */ | |
2075 | server_p->hold = time(NULL); | |
2076 | server_p->hold += | |
2077 | (server_p->hold - client_p->localClient->lasttime > | |
2078 | HANGONGOODLINK) ? HANGONRETRYDELAY : ConFreq(server_p->class); | |
2079 | } | |
2080 | ||
2081 | } | |
2082 | else if(IsClient(client_p)) | |
2083 | { | |
2084 | ServerStats->is_cl++; | |
2085 | ServerStats->is_cbs += client_p->localClient->sendB; | |
2086 | ServerStats->is_cbr += client_p->localClient->receiveB; | |
2087 | ServerStats->is_cks += client_p->localClient->sendK; | |
2088 | ServerStats->is_ckr += client_p->localClient->receiveK; | |
2089 | ServerStats->is_cti += CurrentTime - client_p->localClient->firsttime; | |
2090 | if(ServerStats->is_cbs > 2047) | |
2091 | { | |
2092 | ServerStats->is_cks += (ServerStats->is_cbs >> 10); | |
2093 | ServerStats->is_cbs &= 0x3ff; | |
2094 | } | |
2095 | if(ServerStats->is_cbr > 2047) | |
2096 | { | |
2097 | ServerStats->is_ckr += (ServerStats->is_cbr >> 10); | |
2098 | ServerStats->is_cbr &= 0x3ff; | |
2099 | } | |
2100 | } | |
2101 | else | |
2102 | ServerStats->is_ni++; | |
2103 | ||
c5c2f506 | 2104 | if(client_p->localClient->F) |
212380e3 AC |
2105 | { |
2106 | /* attempt to flush any pending dbufs. Evil, but .. -- adrian */ | |
2107 | if(!IsIOError(client_p)) | |
c5c2f506 | 2108 | send_queued_write(client_p->localClient->F->fd, client_p); |
212380e3 | 2109 | |
c5c2f506 AC |
2110 | comm_close(client_p->localClient->F->fd); |
2111 | client_p->localClient->F = NULL; | |
212380e3 AC |
2112 | } |
2113 | ||
64f2a7eb | 2114 | if(-1 < client_p->localClient->ctrlfd) |
212380e3 | 2115 | { |
64f2a7eb JT |
2116 | comm_close(client_p->localClient->ctrlfd); |
2117 | client_p->localClient->ctrlfd = -1; | |
212380e3 AC |
2118 | } |
2119 | ||
2120 | linebuf_donebuf(&client_p->localClient->buf_sendq); | |
2121 | linebuf_donebuf(&client_p->localClient->buf_recvq); | |
2122 | detach_conf(client_p); | |
2123 | ||
2124 | /* XXX shouldnt really be done here. */ | |
2125 | detach_server_conf(client_p); | |
2126 | ||
2127 | client_p->from = NULL; /* ...this should catch them! >:) --msa */ | |
2128 | ClearMyConnect(client_p); | |
2129 | SetIOError(client_p); | |
2130 | } | |
2131 | ||
2132 | ||
2133 | ||
2134 | void | |
2135 | error_exit_client(struct Client *client_p, int error) | |
2136 | { | |
2137 | /* | |
2138 | * ...hmm, with non-blocking sockets we might get | |
2139 | * here from quite valid reasons, although.. why | |
2140 | * would select report "data available" when there | |
2141 | * wasn't... so, this must be an error anyway... --msa | |
2142 | * actually, EOF occurs when read() returns 0 and | |
2143 | * in due course, select() returns that fd as ready | |
2144 | * for reading even though it ends up being an EOF. -avalon | |
2145 | */ | |
2146 | char errmsg[255]; | |
c5c2f506 | 2147 | int current_error = comm_get_sockerr(client_p->localClient->F->fd); |
212380e3 AC |
2148 | |
2149 | SetIOError(client_p); | |
2150 | ||
2151 | if(IsServer(client_p) || IsHandshake(client_p)) | |
2152 | { | |
212380e3 AC |
2153 | if(error == 0) |
2154 | { | |
2155 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2156 | "Server %s closed the connection", | |
2157 | get_server_name(client_p, SHOW_IP)); | |
2158 | ||
2159 | ilog(L_SERVER, "Server %s closed the connection", | |
2160 | log_client_name(client_p, SHOW_IP)); | |
2161 | } | |
2162 | else | |
2163 | { | |
2164 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2165 | "Lost connection to %s: %s", | |
2166 | client_p->name, strerror(current_error)); | |
2167 | ilog(L_SERVER, "Lost connection to %s: %s", | |
2168 | log_client_name(client_p, SHOW_IP), strerror(current_error)); | |
2169 | } | |
212380e3 AC |
2170 | } |
2171 | ||
2172 | if(error == 0) | |
2173 | strlcpy(errmsg, "Remote host closed the connection", sizeof(errmsg)); | |
2174 | else | |
2175 | ircsnprintf(errmsg, sizeof(errmsg), "Read error: %s", strerror(current_error)); | |
2176 | ||
2177 | exit_client(client_p, client_p, &me, errmsg); | |
2178 | } |