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212380e3 | 1 | /* |
b37021a4 | 2 | * charybdis: an advanced ircd. |
212380e3 | 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 | 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 | 26 | */ |
27 | #include "stdinc.h" | |
28 | #include "config.h" | |
29 | ||
212380e3 | 30 | #include "client.h" |
31 | #include "class.h" | |
32 | #include "common.h" | |
212380e3 | 33 | #include "hash.h" |
13ae2f4b | 34 | #include "match.h" |
212380e3 | 35 | #include "ircd.h" |
212380e3 | 36 | #include "numeric.h" |
37 | #include "packet.h" | |
38 | #include "s_auth.h" | |
212380e3 | 39 | #include "s_conf.h" |
40 | #include "s_newconf.h" | |
d3455e2c | 41 | #include "logger.h" |
212380e3 | 42 | #include "s_serv.h" |
43 | #include "s_stats.h" | |
44 | #include "send.h" | |
45 | #include "whowas.h" | |
46 | #include "s_user.h" | |
212380e3 | 47 | #include "hash.h" |
212380e3 | 48 | #include "hostmask.h" |
212380e3 | 49 | #include "listener.h" |
50 | #include "hook.h" | |
51 | #include "msg.h" | |
52 | #include "monitor.h" | |
53 | #include "blacklist.h" | |
54015b5f | 54 | #include "reject.h" |
994544c2 | 55 | #include "scache.h" |
b37021a4 | 56 | #include "irc_dictionary.h" |
8db00894 | 57 | #include "sslproc.h" |
212380e3 | 58 | |
59 | #define DEBUG_EXITED_CLIENTS | |
60 | ||
af81d5a0 WP |
61 | static void check_pings_list(rb_dlink_list * list); |
62 | static void check_unknowns_list(rb_dlink_list * list); | |
212380e3 | 63 | static void free_exited_clients(void *unused); |
64 | static void exit_aborted_clients(void *unused); | |
65 | ||
66 | static int exit_remote_client(struct Client *, struct Client *, struct Client *,const char *); | |
67 | static int exit_remote_server(struct Client *, struct Client *, struct Client *,const char *); | |
68 | static int exit_local_client(struct Client *, struct Client *, struct Client *,const char *); | |
69 | static int exit_unknown_client(struct Client *, struct Client *, struct Client *,const char *); | |
70 | static int exit_local_server(struct Client *, struct Client *, struct Client *,const char *); | |
71 | static int qs_server(struct Client *, struct Client *, struct Client *, const char *comment); | |
72 | ||
73 | static EVH check_pings; | |
74 | ||
6992eef0 VY |
75 | static rb_bh *client_heap = NULL; |
76 | static rb_bh *lclient_heap = NULL; | |
bb79db15 | 77 | static rb_bh *pclient_heap = NULL; |
6992eef0 | 78 | static rb_bh *user_heap = NULL; |
c387fc41 | 79 | static rb_bh *away_heap = NULL; |
6992eef0 | 80 | static char current_uid[IDLEN]; |
212380e3 | 81 | |
43de0f45 WP |
82 | struct Dictionary *nd_dict = NULL; |
83 | ||
212380e3 | 84 | enum |
85 | { | |
86 | D_LINED, | |
c6525f80 | 87 | K_LINED |
212380e3 | 88 | }; |
89 | ||
af81d5a0 | 90 | rb_dlink_list dead_list; |
212380e3 | 91 | #ifdef DEBUG_EXITED_CLIENTS |
af81d5a0 | 92 | static rb_dlink_list dead_remote_list; |
212380e3 | 93 | #endif |
94 | ||
95 | struct abort_client | |
96 | { | |
af81d5a0 | 97 | rb_dlink_node node; |
212380e3 | 98 | struct Client *client; |
99 | char notice[REASONLEN]; | |
100 | }; | |
101 | ||
af81d5a0 | 102 | static rb_dlink_list abort_list; |
212380e3 | 103 | |
104 | ||
105 | /* | |
106 | * init_client | |
107 | * | |
108 | * inputs - NONE | |
109 | * output - NONE | |
110 | * side effects - initialize client free memory | |
111 | */ | |
112 | void | |
113 | init_client(void) | |
114 | { | |
115 | /* | |
116 | * start off the check ping event .. -- adrian | |
117 | * Every 30 seconds is plenty -- db | |
118 | */ | |
ae4091d2 | 119 | client_heap = rb_bh_create(sizeof(struct Client), CLIENT_HEAP_SIZE, "client_heap"); |
784fdac0 VY |
120 | lclient_heap = rb_bh_create(sizeof(struct LocalUser), LCLIENT_HEAP_SIZE, "lclient_heap"); |
121 | pclient_heap = rb_bh_create(sizeof(struct PreClient), PCLIENT_HEAP_SIZE, "pclient_heap"); | |
bb79db15 | 122 | user_heap = rb_bh_create(sizeof(struct User), USER_HEAP_SIZE, "user_heap"); |
c387fc41 | 123 | away_heap = rb_bh_create(AWAYLEN, AWAY_HEAP_SIZE, "away_heap"); |
784fdac0 | 124 | |
780087dc JT |
125 | rb_event_addish("check_pings", check_pings, NULL, 30); |
126 | rb_event_addish("free_exited_clients", &free_exited_clients, NULL, 4); | |
127 | rb_event_addish("exit_aborted_clients", exit_aborted_clients, NULL, 1); | |
6227ed01 | 128 | rb_event_add("flood_recalc", flood_recalc, NULL, 1); |
43de0f45 WP |
129 | |
130 | nd_dict = irc_dictionary_create(irccmp); | |
212380e3 | 131 | } |
132 | ||
133 | ||
134 | /* | |
135 | * make_client - create a new Client struct and set it to initial state. | |
136 | * | |
137 | * from == NULL, create local client (a client connected | |
138 | * to a socket). | |
139 | * | |
140 | * from, create remote client (behind a socket | |
141 | * associated with the client defined by | |
142 | * 'from'). ('from' is a local client!!). | |
143 | */ | |
144 | struct Client * | |
145 | make_client(struct Client *from) | |
146 | { | |
147 | struct Client *client_p = NULL; | |
148 | struct LocalUser *localClient; | |
149 | ||
6e9b4415 | 150 | client_p = rb_bh_alloc(client_heap); |
212380e3 | 151 | |
152 | if(from == NULL) | |
153 | { | |
154 | client_p->from = client_p; /* 'from' of local client is self! */ | |
155 | ||
bb79db15 | 156 | localClient = rb_bh_alloc(lclient_heap); |
212380e3 | 157 | SetMyConnect(client_p); |
158 | client_p->localClient = localClient; | |
159 | ||
9f6bbe3c | 160 | client_p->localClient->lasttime = client_p->localClient->firsttime = rb_current_time(); |
212380e3 | 161 | |
de057244 | 162 | client_p->localClient->F = NULL; |
212380e3 | 163 | |
bb79db15 | 164 | client_p->preClient = rb_bh_alloc(pclient_heap);; |
212380e3 | 165 | |
166 | /* as good a place as any... */ | |
af81d5a0 | 167 | rb_dlinkAdd(client_p, &client_p->localClient->tnode, &unknown_list); |
212380e3 | 168 | } |
169 | else | |
170 | { /* from is not NULL */ | |
171 | client_p->localClient = NULL; | |
172 | client_p->preClient = NULL; | |
173 | client_p->from = from; /* 'from' of local client is self! */ | |
174 | } | |
175 | ||
176 | SetUnknown(client_p); | |
177 | strcpy(client_p->username, "unknown"); | |
178 | ||
179 | return client_p; | |
180 | } | |
181 | ||
182 | void | |
183 | free_pre_client(struct Client *client_p) | |
184 | { | |
185 | struct Blacklist *blptr; | |
186 | ||
187 | s_assert(NULL != client_p); | |
188 | ||
189 | if(client_p->preClient == NULL) | |
190 | return; | |
191 | ||
192 | blptr = client_p->preClient->dnsbl_listed; | |
193 | if (blptr != NULL) | |
194 | unref_blacklist(blptr); | |
195 | abort_blacklist_queries(client_p); | |
6e9b4415 | 196 | rb_bh_free(pclient_heap, client_p->preClient); |
212380e3 | 197 | client_p->preClient = NULL; |
198 | } | |
199 | ||
200 | static void | |
201 | free_local_client(struct Client *client_p) | |
202 | { | |
203 | s_assert(NULL != client_p); | |
204 | s_assert(&me != client_p); | |
205 | ||
206 | if(client_p->localClient == NULL) | |
207 | return; | |
208 | ||
209 | /* | |
210 | * clean up extra sockets from P-lines which have been discarded. | |
211 | */ | |
212 | if(client_p->localClient->listener) | |
213 | { | |
214 | s_assert(0 < client_p->localClient->listener->ref_count); | |
215 | if(0 == --client_p->localClient->listener->ref_count | |
216 | && !client_p->localClient->listener->active) | |
217 | free_listener(client_p->localClient->listener); | |
218 | client_p->localClient->listener = 0; | |
219 | } | |
220 | ||
8db00894 VY |
221 | if(client_p->localClient->F != NULL) |
222 | { | |
223 | del_from_cli_fd_hash(client_p); | |
780087dc | 224 | rb_close(client_p->localClient->F); |
8db00894 | 225 | } |
212380e3 | 226 | |
227 | if(client_p->localClient->passwd) | |
228 | { | |
229 | memset(client_p->localClient->passwd, 0, | |
230 | strlen(client_p->localClient->passwd)); | |
90a3c35b | 231 | rb_free(client_p->localClient->passwd); |
212380e3 | 232 | } |
233 | ||
90a3c35b VY |
234 | rb_free(client_p->localClient->challenge); |
235 | rb_free(client_p->localClient->fullcaps); | |
236 | rb_free(client_p->localClient->opername); | |
237 | rb_free(client_p->localClient->mangledhost); | |
0ba0bb4c JT |
238 | if (client_p->localClient->privset) |
239 | privilegeset_unref(client_p->localClient->privset); | |
212380e3 | 240 | |
62271ba9 AS |
241 | if(IsSSL(client_p)) |
242 | ssld_decrement_clicount(client_p->localClient->ssl_ctl); | |
243 | ||
244 | if(IsCapable(client_p, CAP_ZIP)) | |
245 | ssld_decrement_clicount(client_p->localClient->z_ctl); | |
8db00894 | 246 | |
6e9b4415 | 247 | rb_bh_free(lclient_heap, client_p->localClient); |
212380e3 | 248 | client_p->localClient = NULL; |
249 | } | |
250 | ||
251 | void | |
252 | free_client(struct Client *client_p) | |
253 | { | |
254 | s_assert(NULL != client_p); | |
255 | s_assert(&me != client_p); | |
256 | free_local_client(client_p); | |
257 | free_pre_client(client_p); | |
6e9b4415 | 258 | rb_bh_free(client_heap, client_p); |
212380e3 | 259 | } |
260 | ||
261 | /* | |
262 | * check_pings - go through the local client list and check activity | |
263 | * kill off stuff that should die | |
264 | * | |
265 | * inputs - NOT USED (from event) | |
266 | * output - next time_t when check_pings() should be called again | |
267 | * side effects - | |
268 | * | |
269 | * | |
270 | * A PING can be sent to clients as necessary. | |
271 | * | |
272 | * Client/Server ping outs are handled. | |
273 | */ | |
274 | ||
275 | /* | |
276 | * Addon from adrian. We used to call this after nextping seconds, | |
277 | * however I've changed it to run once a second. This is only for | |
278 | * PING timeouts, not K/etc-line checks (thanks dianora!). Having it | |
279 | * run once a second makes life a lot easier - when a new client connects | |
280 | * and they need a ping in 4 seconds, if nextping was set to 20 seconds | |
281 | * we end up waiting 20 seconds. This is stupid. :-) | |
282 | * I will optimise (hah!) check_pings() once I've finished working on | |
283 | * tidying up other network IO evilnesses. | |
284 | * -- adrian | |
285 | */ | |
286 | ||
287 | static void | |
288 | check_pings(void *notused) | |
289 | { | |
290 | check_pings_list(&lclient_list); | |
291 | check_pings_list(&serv_list); | |
292 | check_unknowns_list(&unknown_list); | |
293 | } | |
294 | ||
295 | /* | |
296 | * Check_pings_list() | |
297 | * | |
298 | * inputs - pointer to list to check | |
299 | * output - NONE | |
300 | * side effects - | |
301 | */ | |
302 | static void | |
af81d5a0 | 303 | check_pings_list(rb_dlink_list * list) |
212380e3 | 304 | { |
305 | char scratch[32]; /* way too generous but... */ | |
306 | struct Client *client_p; /* current local client_p being examined */ | |
307 | int ping = 0; /* ping time value from client */ | |
90a3c35b | 308 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 309 | |
90a3c35b | 310 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 | 311 | { |
312 | client_p = ptr->data; | |
313 | ||
212380e3 | 314 | if(!MyConnect(client_p) || IsDead(client_p)) |
315 | continue; | |
316 | ||
e883cf07 | 317 | ping = get_client_ping(client_p); |
212380e3 | 318 | |
9f6bbe3c | 319 | if(ping < (rb_current_time() - client_p->localClient->lasttime)) |
212380e3 | 320 | { |
321 | /* | |
322 | * If the client/server hasnt talked to us in 2*ping seconds | |
323 | * and it has a ping time, then close its connection. | |
324 | */ | |
9f6bbe3c | 325 | if(((rb_current_time() - client_p->localClient->lasttime) >= (2 * ping) |
212380e3 | 326 | && (client_p->flags & FLAGS_PINGSENT))) |
327 | { | |
e883cf07 | 328 | if(IsServer(client_p)) |
212380e3 | 329 | { |
e883cf07 | 330 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 | 331 | "No response from %s, closing link", |
715b28fe | 332 | client_p->name); |
212380e3 | 333 | ilog(L_SERVER, |
334 | "No response from %s, closing link", | |
335 | log_client_name(client_p, HIDE_IP)); | |
336 | } | |
38e6acdd | 337 | (void) rb_snprintf(scratch, sizeof(scratch), |
212380e3 | 338 | "Ping timeout: %d seconds", |
9f6bbe3c | 339 | (int) (rb_current_time() - client_p->localClient->lasttime)); |
212380e3 | 340 | |
341 | exit_client(client_p, client_p, &me, scratch); | |
342 | continue; | |
343 | } | |
344 | else if((client_p->flags & FLAGS_PINGSENT) == 0) | |
345 | { | |
346 | /* | |
347 | * if we havent PINGed the connection and we havent | |
348 | * heard from it in a while, PING it to make sure | |
349 | * it is still alive. | |
350 | */ | |
351 | client_p->flags |= FLAGS_PINGSENT; | |
352 | /* not nice but does the job */ | |
9f6bbe3c | 353 | client_p->localClient->lasttime = rb_current_time() - ping; |
212380e3 | 354 | sendto_one(client_p, "PING :%s", me.name); |
355 | } | |
356 | } | |
357 | /* ping_timeout: */ | |
358 | ||
359 | } | |
360 | } | |
361 | ||
362 | /* | |
363 | * check_unknowns_list | |
364 | * | |
365 | * inputs - pointer to list of unknown clients | |
366 | * output - NONE | |
367 | * side effects - unknown clients get marked for termination after n seconds | |
368 | */ | |
369 | static void | |
af81d5a0 | 370 | check_unknowns_list(rb_dlink_list * list) |
212380e3 | 371 | { |
90a3c35b | 372 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 373 | struct Client *client_p; |
16d59a0d | 374 | int timeout; |
212380e3 | 375 | |
90a3c35b | 376 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 | 377 | { |
378 | client_p = ptr->data; | |
379 | ||
380 | if(IsDead(client_p) || IsClosing(client_p)) | |
381 | continue; | |
382 | ||
8813d184 JT |
383 | /* still has DNSbls to validate against */ |
384 | if(client_p->preClient != NULL && | |
385 | rb_dlink_list_length(&client_p->preClient->dnsbl_queries) > 0) | |
386 | continue; | |
387 | ||
212380e3 | 388 | /* |
389 | * Check UNKNOWN connections - if they have been in this state | |
390 | * for > 30s, close them. | |
391 | */ | |
392 | ||
16d59a0d | 393 | timeout = IsAnyServer(client_p) ? ConfigFileEntry.connect_timeout : 30; |
9f6bbe3c | 394 | if((rb_current_time() - client_p->localClient->firsttime) > timeout) |
16d59a0d JT |
395 | { |
396 | if(IsAnyServer(client_p)) | |
397 | { | |
398 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
399 | "No response from %s, closing link", | |
715b28fe | 400 | client_p->name); |
16d59a0d JT |
401 | ilog(L_SERVER, |
402 | "No response from %s, closing link", | |
403 | log_client_name(client_p, HIDE_IP)); | |
404 | } | |
212380e3 | 405 | exit_client(client_p, client_p, &me, "Connection timed out"); |
16d59a0d | 406 | } |
212380e3 | 407 | } |
408 | } | |
409 | ||
410 | static void | |
411 | notify_banned_client(struct Client *client_p, struct ConfItem *aconf, int ban) | |
412 | { | |
413 | static const char conn_closed[] = "Connection closed"; | |
414 | static const char d_lined[] = "D-lined"; | |
415 | static const char k_lined[] = "K-lined"; | |
212380e3 | 416 | const char *reason = NULL; |
417 | const char *exit_reason = conn_closed; | |
418 | ||
419 | if(ConfigFileEntry.kline_with_reason && !EmptyString(aconf->passwd)) | |
420 | { | |
421 | reason = aconf->passwd; | |
422 | exit_reason = aconf->passwd; | |
423 | } | |
424 | else | |
425 | { | |
4fd52c8c | 426 | reason = aconf->status == D_LINED ? d_lined : k_lined; |
212380e3 | 427 | } |
428 | ||
429 | if(ban == D_LINED && !IsPerson(client_p)) | |
430 | sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined"); | |
431 | else | |
432 | sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP), | |
433 | me.name, client_p->name, reason); | |
434 | ||
435 | exit_client(client_p, client_p, &me, | |
436 | EmptyString(ConfigFileEntry.kline_reason) ? exit_reason : | |
437 | ConfigFileEntry.kline_reason); | |
438 | } | |
439 | ||
440 | /* | |
441 | * check_banned_lines | |
442 | * inputs - NONE | |
443 | * output - NONE | |
d5a432fa | 444 | * side effects - Check all connections for a pending k/dline against the |
212380e3 | 445 | * client, exit the client if found. |
446 | */ | |
447 | void | |
448 | check_banned_lines(void) | |
449 | { | |
48191237 JT |
450 | check_dlines(); |
451 | check_klines(); | |
452 | check_xlines(); | |
212380e3 | 453 | } |
454 | ||
455 | /* check_klines_event() | |
456 | * | |
457 | * inputs - | |
458 | * outputs - | |
459 | * side effects - check_klines() is called, kline_queued unset | |
460 | */ | |
461 | void | |
462 | check_klines_event(void *unused) | |
463 | { | |
464 | kline_queued = 0; | |
465 | check_klines(); | |
466 | } | |
467 | ||
468 | /* check_klines | |
469 | * | |
470 | * inputs - | |
471 | * outputs - | |
472 | * side effects - all clients will be checked for klines | |
473 | */ | |
474 | void | |
475 | check_klines(void) | |
476 | { | |
477 | struct Client *client_p; | |
478 | struct ConfItem *aconf; | |
af81d5a0 | 479 | rb_dlink_node *ptr; |
90a3c35b | 480 | rb_dlink_node *next_ptr; |
212380e3 | 481 | |
90a3c35b | 482 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 | 483 | { |
484 | client_p = ptr->data; | |
485 | ||
486 | if(IsMe(client_p) || !IsPerson(client_p)) | |
487 | continue; | |
488 | ||
489 | if((aconf = find_kline(client_p)) != NULL) | |
490 | { | |
491 | if(IsExemptKline(client_p)) | |
492 | { | |
493 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
13ea0f1c JT |
494 | "KLINE over-ruled for %s, client is kline_exempt [%s@%s]", |
495 | get_client_name(client_p, HIDE_IP), | |
496 | aconf->user, aconf->host); | |
212380e3 | 497 | continue; |
498 | } | |
499 | ||
500 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
501 | "KLINE active for %s", | |
502 | get_client_name(client_p, HIDE_IP)); | |
503 | ||
504 | notify_banned_client(client_p, aconf, K_LINED); | |
505 | continue; | |
506 | } | |
507 | } | |
508 | } | |
509 | ||
212380e3 | 510 | /* check_dlines() |
511 | * | |
512 | * inputs - | |
513 | * outputs - | |
514 | * side effects - all clients will be checked for dlines | |
515 | */ | |
516 | void | |
517 | check_dlines(void) | |
518 | { | |
519 | struct Client *client_p; | |
520 | struct ConfItem *aconf; | |
af81d5a0 | 521 | rb_dlink_node *ptr; |
90a3c35b | 522 | rb_dlink_node *next_ptr; |
212380e3 | 523 | |
90a3c35b | 524 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 | 525 | { |
526 | client_p = ptr->data; | |
527 | ||
528 | if(IsMe(client_p)) | |
529 | continue; | |
530 | ||
21c9d815 | 531 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) |
212380e3 | 532 | { |
533 | if(aconf->status & CONF_EXEMPTDLINE) | |
534 | continue; | |
535 | ||
536 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
537 | "DLINE active for %s", | |
538 | get_client_name(client_p, HIDE_IP)); | |
539 | ||
540 | notify_banned_client(client_p, aconf, D_LINED); | |
541 | continue; | |
542 | } | |
543 | } | |
544 | ||
545 | /* dlines need to be checked against unknowns too */ | |
90a3c35b | 546 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) |
212380e3 | 547 | { |
548 | client_p = ptr->data; | |
549 | ||
21c9d815 | 550 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) |
212380e3 | 551 | { |
552 | if(aconf->status & CONF_EXEMPTDLINE) | |
553 | continue; | |
554 | ||
555 | notify_banned_client(client_p, aconf, D_LINED); | |
556 | } | |
557 | } | |
558 | } | |
559 | ||
560 | /* check_xlines | |
561 | * | |
562 | * inputs - | |
563 | * outputs - | |
564 | * side effects - all clients will be checked for xlines | |
565 | */ | |
566 | void | |
567 | check_xlines(void) | |
568 | { | |
569 | struct Client *client_p; | |
570 | struct ConfItem *aconf; | |
af81d5a0 | 571 | rb_dlink_node *ptr; |
90a3c35b | 572 | rb_dlink_node *next_ptr; |
212380e3 | 573 | |
90a3c35b | 574 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 | 575 | { |
576 | client_p = ptr->data; | |
577 | ||
578 | if(IsMe(client_p) || !IsPerson(client_p)) | |
579 | continue; | |
580 | ||
581 | if((aconf = find_xline(client_p->info, 1)) != NULL) | |
582 | { | |
583 | if(IsExemptKline(client_p)) | |
584 | { | |
585 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
13ea0f1c JT |
586 | "XLINE over-ruled for %s, client is kline_exempt [%s]", |
587 | get_client_name(client_p, HIDE_IP), | |
70c6c150 | 588 | aconf->host); |
212380e3 | 589 | continue; |
590 | } | |
591 | ||
592 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
593 | get_client_name(client_p, HIDE_IP)); | |
594 | ||
595 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
596 | continue; | |
597 | } | |
598 | } | |
599 | } | |
600 | ||
601 | /* | |
602 | * update_client_exit_stats | |
603 | * | |
604 | * input - pointer to client | |
605 | * output - NONE | |
606 | * side effects - | |
607 | */ | |
608 | static void | |
609 | update_client_exit_stats(struct Client *client_p) | |
610 | { | |
611 | if(IsServer(client_p)) | |
612 | { | |
613 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
614 | "Server %s split from %s", | |
615 | client_p->name, client_p->servptr->name); | |
616 | if(HasSentEob(client_p)) | |
617 | eob_count--; | |
618 | } | |
619 | else if(IsClient(client_p)) | |
620 | { | |
621 | --Count.total; | |
622 | if(IsOper(client_p)) | |
623 | --Count.oper; | |
624 | if(IsInvisible(client_p)) | |
625 | --Count.invisi; | |
626 | } | |
627 | ||
628 | if(splitchecking && !splitmode) | |
629 | check_splitmode(NULL); | |
630 | } | |
631 | ||
632 | /* | |
633 | * release_client_state | |
634 | * | |
635 | * input - pointer to client to release | |
636 | * output - NONE | |
637 | * side effects - | |
638 | */ | |
639 | static void | |
640 | release_client_state(struct Client *client_p) | |
641 | { | |
642 | if(client_p->user != NULL) | |
643 | { | |
644 | free_user(client_p->user, client_p); /* try this here */ | |
645 | } | |
646 | if(client_p->serv) | |
647 | { | |
648 | if(client_p->serv->user != NULL) | |
649 | free_user(client_p->serv->user, client_p); | |
650 | if(client_p->serv->fullcaps) | |
90a3c35b VY |
651 | rb_free(client_p->serv->fullcaps); |
652 | rb_free(client_p->serv); | |
212380e3 | 653 | } |
654 | } | |
655 | ||
656 | /* | |
657 | * remove_client_from_list | |
658 | * inputs - point to client to remove | |
659 | * output - NONE | |
660 | * side effects - taken the code from ExitOneClient() for this | |
661 | * and placed it here. - avalon | |
662 | */ | |
663 | static void | |
664 | remove_client_from_list(struct Client *client_p) | |
665 | { | |
666 | s_assert(NULL != client_p); | |
667 | ||
668 | if(client_p == NULL) | |
669 | return; | |
670 | ||
671 | /* A client made with make_client() | |
672 | * is on the unknown_list until removed. | |
673 | * If it =does= happen to exit before its removed from that list | |
674 | * and its =not= on the global_client_list, it will core here. | |
675 | * short circuit that case now -db | |
676 | */ | |
677 | if(client_p->node.prev == NULL && client_p->node.next == NULL) | |
678 | return; | |
679 | ||
af81d5a0 | 680 | rb_dlinkDelete(&client_p->node, &global_client_list); |
212380e3 | 681 | |
682 | update_client_exit_stats(client_p); | |
683 | } | |
684 | ||
685 | ||
686 | /* | |
687 | * find_person - find person by (nick)name. | |
688 | * inputs - pointer to name | |
689 | * output - return client pointer | |
690 | * side effects - | |
691 | */ | |
692 | struct Client * | |
693 | find_person(const char *name) | |
694 | { | |
695 | struct Client *c2ptr; | |
696 | ||
697 | c2ptr = find_client(name); | |
698 | ||
699 | if(c2ptr && IsPerson(c2ptr)) | |
700 | return (c2ptr); | |
701 | return (NULL); | |
702 | } | |
703 | ||
704 | struct Client * | |
705 | find_named_person(const char *name) | |
706 | { | |
707 | struct Client *c2ptr; | |
708 | ||
709 | c2ptr = find_named_client(name); | |
710 | ||
711 | if(c2ptr && IsPerson(c2ptr)) | |
712 | return (c2ptr); | |
713 | return (NULL); | |
714 | } | |
715 | ||
716 | ||
717 | /* | |
718 | * find_chasing - find the client structure for a nick name (user) | |
719 | * using history mechanism if necessary. If the client is not found, | |
720 | * an error message (NO SUCH NICK) is generated. If the client was found | |
721 | * through the history, chasing will be 1 and otherwise 0. | |
722 | */ | |
723 | struct Client * | |
724 | find_chasing(struct Client *source_p, const char *user, int *chasing) | |
725 | { | |
726 | struct Client *who; | |
727 | ||
728 | if(MyClient(source_p)) | |
729 | who = find_named_person(user); | |
730 | else | |
731 | who = find_person(user); | |
732 | ||
733 | if(chasing) | |
734 | *chasing = 0; | |
735 | ||
736 | if(who || IsDigit(*user)) | |
737 | return who; | |
738 | ||
739 | if(!(who = get_history(user, (long) KILLCHASETIMELIMIT))) | |
740 | { | |
741 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
742 | form_str(ERR_NOSUCHNICK), user); | |
743 | return (NULL); | |
744 | } | |
745 | if(chasing) | |
746 | *chasing = 1; | |
747 | return who; | |
748 | } | |
749 | ||
750 | /* | |
751 | * get_client_name - Return the name of the client | |
752 | * for various tracking and | |
753 | * admin purposes. The main purpose of this function is to | |
754 | * return the "socket host" name of the client, if that | |
755 | * differs from the advertised name (other than case). | |
756 | * But, this can be used to any client structure. | |
757 | * | |
758 | * NOTE 1: | |
759 | * Watch out the allocation of "nbuf", if either source_p->name | |
760 | * or source_p->sockhost gets changed into pointers instead of | |
761 | * directly allocated within the structure... | |
762 | * | |
763 | * NOTE 2: | |
764 | * Function return either a pointer to the structure (source_p) or | |
765 | * to internal buffer (nbuf). *NEVER* use the returned pointer | |
766 | * to modify what it points!!! | |
767 | */ | |
768 | ||
769 | const char * | |
770 | get_client_name(struct Client *client, int showip) | |
771 | { | |
772 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
773 | ||
774 | s_assert(NULL != client); | |
775 | if(client == NULL) | |
776 | return NULL; | |
777 | ||
778 | if(MyConnect(client)) | |
779 | { | |
780 | if(!irccmp(client->name, client->host)) | |
781 | return client->name; | |
782 | ||
783 | if(ConfigFileEntry.hide_spoof_ips && | |
784 | showip == SHOW_IP && IsIPSpoof(client)) | |
785 | showip = MASK_IP; | |
212380e3 | 786 | if(IsAnyServer(client)) |
787 | showip = MASK_IP; | |
212380e3 | 788 | |
789 | /* And finally, let's get the host information, ip or name */ | |
790 | switch (showip) | |
791 | { | |
792 | case SHOW_IP: | |
38e6acdd | 793 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", |
212380e3 | 794 | client->name, client->username, |
795 | client->sockhost); | |
796 | break; | |
797 | case MASK_IP: | |
38e6acdd | 798 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", |
212380e3 | 799 | client->name, client->username); |
800 | break; | |
801 | default: | |
38e6acdd | 802 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", |
212380e3 | 803 | client->name, client->username, client->host); |
804 | } | |
805 | return nbuf; | |
806 | } | |
807 | ||
808 | /* As pointed out by Adel Mezibra | |
809 | * Neph|l|m@EFnet. Was missing a return here. | |
810 | */ | |
811 | return client->name; | |
812 | } | |
212380e3 | 813 | |
814 | /* log_client_name() | |
815 | * | |
816 | * This version is the same as get_client_name, but doesnt contain the | |
817 | * code that will hide IPs always. This should be used for logfiles. | |
818 | */ | |
819 | const char * | |
820 | log_client_name(struct Client *target_p, int showip) | |
821 | { | |
822 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
823 | ||
824 | if(target_p == NULL) | |
825 | return NULL; | |
826 | ||
827 | if(MyConnect(target_p)) | |
828 | { | |
829 | if(irccmp(target_p->name, target_p->host) == 0) | |
830 | return target_p->name; | |
831 | ||
832 | switch (showip) | |
833 | { | |
834 | case SHOW_IP: | |
38e6acdd | 835 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, |
212380e3 | 836 | target_p->username, target_p->sockhost); |
837 | break; | |
838 | ||
839 | case MASK_IP: | |
38e6acdd | 840 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", |
212380e3 | 841 | target_p->name, target_p->username); |
842 | ||
843 | default: | |
38e6acdd | 844 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, |
212380e3 | 845 | target_p->username, target_p->host); |
846 | } | |
847 | ||
848 | return nbuf; | |
849 | } | |
850 | ||
851 | return target_p->name; | |
852 | } | |
853 | ||
854 | /* is_remote_connect - Returns whether a server was /connect'ed by a remote | |
855 | * oper (send notices netwide) */ | |
856 | int | |
857 | is_remote_connect(struct Client *client_p) | |
858 | { | |
859 | struct Client *oper; | |
860 | ||
861 | if (client_p->serv == NULL) | |
862 | return FALSE; | |
863 | oper = find_named_person(client_p->serv->by); | |
864 | return oper != NULL && IsOper(oper) && !MyConnect(oper); | |
865 | } | |
866 | ||
867 | static void | |
868 | free_exited_clients(void *unused) | |
869 | { | |
af81d5a0 | 870 | rb_dlink_node *ptr, *next; |
212380e3 | 871 | struct Client *target_p; |
872 | ||
8e69bb4e | 873 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_list.head) |
212380e3 | 874 | { |
875 | target_p = ptr->data; | |
876 | ||
877 | #ifdef DEBUG_EXITED_CLIENTS | |
878 | { | |
879 | struct abort_client *abt; | |
af81d5a0 | 880 | rb_dlink_node *aptr; |
212380e3 | 881 | int found = 0; |
882 | ||
8e69bb4e | 883 | RB_DLINK_FOREACH(aptr, abort_list.head) |
212380e3 | 884 | { |
885 | abt = aptr->data; | |
886 | if(abt->client == target_p) | |
887 | { | |
888 | s_assert(0); | |
889 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
890 | "On abort_list: %s stat: %u flags: %u/%u handler: %c", | |
891 | target_p->name, (unsigned int) target_p->status, | |
892 | target_p->flags, target_p->flags2, target_p->handler); | |
893 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 894 | "Please report this to the charybdis developers!"); |
212380e3 | 895 | found++; |
896 | } | |
897 | } | |
898 | ||
899 | if(found) | |
900 | { | |
af81d5a0 | 901 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 | 902 | continue; |
903 | } | |
904 | } | |
905 | #endif | |
906 | ||
907 | if(ptr->data == NULL) | |
908 | { | |
909 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
910 | "Warning: null client on dead_list!"); | |
af81d5a0 | 911 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 | 912 | continue; |
913 | } | |
914 | release_client_state(target_p); | |
915 | free_client(target_p); | |
af81d5a0 | 916 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 | 917 | } |
918 | ||
919 | #ifdef DEBUG_EXITED_CLIENTS | |
8e69bb4e | 920 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_remote_list.head) |
212380e3 | 921 | { |
922 | target_p = ptr->data; | |
923 | ||
924 | if(ptr->data == NULL) | |
925 | { | |
926 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
927 | "Warning: null client on dead_list!"); | |
af81d5a0 | 928 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 | 929 | continue; |
930 | } | |
931 | release_client_state(target_p); | |
932 | free_client(target_p); | |
af81d5a0 | 933 | rb_dlinkDestroy(ptr, &dead_remote_list); |
212380e3 | 934 | } |
935 | #endif | |
936 | ||
937 | } | |
938 | ||
939 | /* | |
940 | ** Recursively send QUITs and SQUITs for source_p and all its dependent clients | |
941 | ** and servers to those servers that need them. A server needs the client | |
942 | ** QUITs if it can't figure them out from the SQUIT (ie pre-TS4) or if it | |
943 | ** isn't getting the SQUIT because of @#(*&@)# hostmasking. With TS4, once | |
944 | ** a link gets a SQUIT, it doesn't need any QUIT/SQUITs for clients depending | |
945 | ** on that one -orabidoo | |
946 | */ | |
947 | static void | |
948 | recurse_send_quits(struct Client *client_p, struct Client *source_p, | |
949 | struct Client *to, const char *comment1, | |
950 | const char *comment) | |
951 | { | |
952 | struct Client *target_p; | |
af81d5a0 | 953 | rb_dlink_node *ptr, *ptr_next; |
212380e3 | 954 | /* If this server can handle quit storm (QS) removal |
955 | * of dependents, just send the SQUIT | |
956 | */ | |
957 | ||
958 | if(IsCapable(to, CAP_QS)) | |
959 | { | |
960 | sendto_one(to, "SQUIT %s :%s", | |
961 | get_id(source_p, to), comment); | |
962 | } | |
963 | else | |
964 | { | |
8e69bb4e | 965 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) |
212380e3 | 966 | { |
967 | target_p = ptr->data; | |
968 | sendto_one(to, ":%s QUIT :%s", target_p->name, comment1); | |
969 | } | |
8e69bb4e | 970 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) |
212380e3 | 971 | { |
972 | target_p = ptr->data; | |
973 | recurse_send_quits(client_p, target_p, to, comment1, comment); | |
974 | } | |
975 | sendto_one(to, "SQUIT %s :%s", source_p->name, comment); | |
976 | } | |
977 | } | |
978 | ||
979 | /* | |
980 | ** Remove all clients that depend on source_p; assumes all (S)QUITs have | |
981 | ** already been sent. we make sure to exit a server's dependent clients | |
982 | ** and servers before the server itself; exit_one_client takes care of | |
983 | ** actually removing things off llists. tweaked from +CSr31 -orabidoo | |
984 | */ | |
985 | /* | |
986 | * added sanity test code.... source_p->serv might be NULL... | |
987 | */ | |
988 | static void | |
989 | recurse_remove_clients(struct Client *source_p, const char *comment) | |
990 | { | |
991 | struct Client *target_p; | |
af81d5a0 | 992 | rb_dlink_node *ptr, *ptr_next; |
212380e3 | 993 | |
994 | if(IsMe(source_p)) | |
995 | return; | |
996 | ||
997 | if(source_p->serv == NULL) /* oooops. uh this is actually a major bug */ | |
998 | return; | |
999 | ||
1000 | /* this is very ugly, but it saves cpu :P */ | |
1001 | if(ConfigFileEntry.nick_delay > 0) | |
1002 | { | |
8e69bb4e | 1003 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) |
212380e3 | 1004 | { |
1005 | target_p = ptr->data; | |
1006 | target_p->flags |= FLAGS_KILLED; | |
1007 | add_nd_entry(target_p->name); | |
1008 | ||
1009 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1010 | exit_remote_client(NULL, target_p, &me, comment); | |
1011 | } | |
1012 | } | |
1013 | else | |
1014 | { | |
8e69bb4e | 1015 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) |
212380e3 | 1016 | { |
1017 | target_p = ptr->data; | |
1018 | target_p->flags |= FLAGS_KILLED; | |
1019 | ||
1020 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1021 | exit_remote_client(NULL, target_p, &me, comment); | |
1022 | } | |
1023 | } | |
1024 | ||
8e69bb4e | 1025 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) |
212380e3 | 1026 | { |
1027 | target_p = ptr->data; | |
1028 | recurse_remove_clients(target_p, comment); | |
1029 | qs_server(NULL, target_p, &me, comment); | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | /* | |
1034 | ** Remove *everything* that depends on source_p, from all lists, and sending | |
1035 | ** all necessary QUITs and SQUITs. source_p itself is still on the lists, | |
1036 | ** and its SQUITs have been sent except for the upstream one -orabidoo | |
1037 | */ | |
1038 | static void | |
1039 | remove_dependents(struct Client *client_p, | |
1040 | struct Client *source_p, | |
1041 | struct Client *from, const char *comment, const char *comment1) | |
1042 | { | |
1043 | struct Client *to; | |
af81d5a0 | 1044 | rb_dlink_node *ptr, *next; |
212380e3 | 1045 | |
8e69bb4e | 1046 | RB_DLINK_FOREACH_SAFE(ptr, next, serv_list.head) |
212380e3 | 1047 | { |
1048 | to = ptr->data; | |
1049 | ||
1050 | if(IsMe(to) || to == source_p->from || | |
1051 | (to == client_p && IsCapable(to, CAP_QS))) | |
1052 | continue; | |
1053 | ||
1054 | recurse_send_quits(client_p, source_p, to, comment1, comment); | |
1055 | } | |
1056 | ||
1057 | recurse_remove_clients(source_p, comment1); | |
1058 | } | |
1059 | ||
1060 | void | |
1061 | exit_aborted_clients(void *unused) | |
1062 | { | |
1063 | struct abort_client *abt; | |
af81d5a0 | 1064 | rb_dlink_node *ptr, *next; |
8e69bb4e | 1065 | RB_DLINK_FOREACH_SAFE(ptr, next, abort_list.head) |
212380e3 | 1066 | { |
1067 | abt = ptr->data; | |
1068 | ||
1069 | #ifdef DEBUG_EXITED_CLIENTS | |
1070 | { | |
af81d5a0 | 1071 | if(rb_dlinkFind(abt->client, &dead_list)) |
212380e3 | 1072 | { |
1073 | s_assert(0); | |
1074 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1075 | "On dead_list: %s stat: %u flags: %u/%u handler: %c", | |
1076 | abt->client->name, (unsigned int) abt->client->status, | |
1077 | abt->client->flags, abt->client->flags2, abt->client->handler); | |
1078 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1079 | "Please report this to the charybdis developers!"); |
212380e3 | 1080 | continue; |
1081 | } | |
1082 | } | |
1083 | #endif | |
1084 | ||
1085 | s_assert(*((unsigned long*)abt->client) != 0xdeadbeef); /* This is lame but its a debug thing */ | |
af81d5a0 | 1086 | rb_dlinkDelete(ptr, &abort_list); |
212380e3 | 1087 | |
1088 | if(IsAnyServer(abt->client)) | |
1089 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1090 | "Closing link to %s: %s", | |
715b28fe | 1091 | abt->client->name, abt->notice); |
212380e3 | 1092 | |
1093 | /* its no longer on abort list - we *must* remove | |
1094 | * FLAGS_CLOSING otherwise exit_client() will not run --fl | |
1095 | */ | |
1096 | abt->client->flags &= ~FLAGS_CLOSING; | |
1097 | exit_client(abt->client, abt->client, &me, abt->notice); | |
90a3c35b | 1098 | rb_free(abt); |
212380e3 | 1099 | } |
1100 | } | |
1101 | ||
1102 | ||
1103 | /* | |
1104 | * dead_link - Adds client to a list of clients that need an exit_client() | |
1105 | * | |
1106 | */ | |
1107 | void | |
25b1f927 | 1108 | dead_link(struct Client *client_p, int sendqex) |
212380e3 | 1109 | { |
1110 | struct abort_client *abt; | |
1111 | ||
1112 | s_assert(!IsMe(client_p)); | |
1113 | if(IsDead(client_p) || IsClosing(client_p) || IsMe(client_p)) | |
1114 | return; | |
1115 | ||
8e43b0b4 | 1116 | abt = (struct abort_client *) rb_malloc(sizeof(struct abort_client)); |
212380e3 | 1117 | |
25b1f927 | 1118 | if(sendqex) |
907468c4 | 1119 | rb_strlcpy(abt->notice, "Max SendQ exceeded", sizeof(abt->notice)); |
212380e3 | 1120 | else |
38e6acdd | 1121 | rb_snprintf(abt->notice, sizeof(abt->notice), "Write error: %s", strerror(errno)); |
212380e3 | 1122 | |
1123 | abt->client = client_p; | |
1124 | SetIOError(client_p); | |
1125 | SetDead(client_p); | |
1126 | SetClosing(client_p); | |
af81d5a0 | 1127 | rb_dlinkAdd(abt, &abt->node, &abort_list); |
212380e3 | 1128 | } |
1129 | ||
1130 | ||
1131 | /* This does the remove of the user from channels..local or remote */ | |
1132 | static inline void | |
1133 | exit_generic_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1134 | const char *comment) | |
1135 | { | |
90a3c35b | 1136 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 1137 | |
1138 | if(IsOper(source_p)) | |
af81d5a0 | 1139 | rb_dlinkFindDestroy(source_p, &oper_list); |
212380e3 | 1140 | |
1141 | sendto_common_channels_local(source_p, ":%s!%s@%s QUIT :%s", | |
1142 | source_p->name, | |
1143 | source_p->username, source_p->host, comment); | |
1144 | ||
1145 | remove_user_from_channels(source_p); | |
1146 | ||
1147 | /* Should not be in any channels now */ | |
1148 | s_assert(source_p->user->channel.head == NULL); | |
1149 | ||
1150 | /* Clean up invitefield */ | |
90a3c35b | 1151 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->user->invited.head) |
212380e3 | 1152 | { |
1153 | del_invite(ptr->data, source_p); | |
1154 | } | |
1155 | ||
1156 | /* Clean up allow lists */ | |
1157 | del_all_accepts(source_p); | |
1158 | ||
1159 | add_history(source_p, 0); | |
1160 | off_history(source_p); | |
1161 | ||
1162 | monitor_signoff(source_p); | |
1163 | ||
1164 | if(has_id(source_p)) | |
1165 | del_from_id_hash(source_p->id, source_p); | |
1166 | ||
1167 | del_from_hostname_hash(source_p->orighost, source_p); | |
1168 | del_from_client_hash(source_p->name, source_p); | |
1169 | remove_client_from_list(source_p); | |
1170 | } | |
1171 | ||
1172 | /* | |
1173 | * Assumes IsPerson(source_p) && !MyConnect(source_p) | |
1174 | */ | |
1175 | ||
1176 | static int | |
1177 | exit_remote_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1178 | const char *comment) | |
1179 | { | |
1180 | exit_generic_client(client_p, source_p, from, comment); | |
1181 | ||
1182 | if(source_p->servptr && source_p->servptr->serv) | |
1183 | { | |
af81d5a0 | 1184 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users); |
212380e3 | 1185 | } |
1186 | ||
1187 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1188 | { | |
1189 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1190 | ":%s QUIT :%s", use_id(source_p), comment); | |
212380e3 | 1191 | } |
1192 | ||
1193 | SetDead(source_p); | |
1194 | #ifdef DEBUG_EXITED_CLIENTS | |
af81d5a0 | 1195 | rb_dlinkAddAlloc(source_p, &dead_remote_list); |
212380e3 | 1196 | #else |
af81d5a0 | 1197 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 | 1198 | #endif |
1199 | return(CLIENT_EXITED); | |
1200 | } | |
1201 | ||
1202 | /* | |
1203 | * This assumes IsUnknown(source_p) == TRUE and MyConnect(source_p) == TRUE | |
1204 | */ | |
1205 | ||
1206 | static int | |
1207 | exit_unknown_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1208 | const char *comment) | |
1209 | { | |
1210 | delete_auth_queries(source_p); | |
cecb5c1e JT |
1211 | if (source_p->localClient->dnsquery) |
1212 | { | |
1213 | delete_resolver_queries(source_p->localClient->dnsquery); | |
1214 | rb_free(source_p->localClient->dnsquery); | |
1215 | } | |
af81d5a0 | 1216 | rb_dlinkDelete(&source_p->localClient->tnode, &unknown_list); |
212380e3 | 1217 | |
1218 | if(!IsIOError(source_p)) | |
dd12a19c | 1219 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", |
1220 | source_p->user != NULL ? source_p->host : "127.0.0.1", | |
1221 | comment); | |
212380e3 | 1222 | |
1223 | close_connection(source_p); | |
1224 | ||
1225 | if(has_id(source_p)) | |
1226 | del_from_id_hash(source_p->id, source_p); | |
1227 | ||
1228 | del_from_hostname_hash(source_p->host, source_p); | |
1229 | del_from_client_hash(source_p->name, source_p); | |
1230 | remove_client_from_list(source_p); | |
212380e3 | 1231 | SetDead(source_p); |
af81d5a0 | 1232 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 | 1233 | |
1234 | /* Note that we don't need to add unknowns to the dead_list */ | |
1235 | return(CLIENT_EXITED); | |
1236 | } | |
1237 | ||
1238 | static int | |
1239 | exit_remote_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1240 | const char *comment) | |
1241 | { | |
1242 | static char comment1[(HOSTLEN*2)+2]; | |
1243 | static char newcomment[BUFSIZE]; | |
1244 | struct Client *target_p; | |
1245 | ||
1246 | if(ConfigServerHide.flatten_links) | |
1247 | strcpy(comment1, "*.net *.split"); | |
1248 | else | |
1249 | { | |
66c8fdd2 | 1250 | strcpy(comment1, source_p->servptr->name); |
212380e3 | 1251 | strcat(comment1, " "); |
1252 | strcat(comment1, source_p->name); | |
1253 | } | |
1254 | if (IsPerson(from)) | |
38e6acdd | 1255 | rb_snprintf(newcomment, sizeof(newcomment), "by %s: %s", |
212380e3 | 1256 | from->name, comment); |
1257 | ||
1258 | if(source_p->serv != NULL) | |
1259 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1260 | ||
1261 | if(source_p->servptr && source_p->servptr->serv) | |
af81d5a0 | 1262 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 | 1263 | else |
1264 | s_assert(0); | |
1265 | ||
af81d5a0 | 1266 | rb_dlinkFindDestroy(source_p, &global_serv_list); |
212380e3 | 1267 | target_p = source_p->from; |
1268 | ||
1269 | if(target_p != NULL && IsServer(target_p) && target_p != client_p && | |
1270 | !IsMe(target_p) && (source_p->flags & FLAGS_KILLED) == 0) | |
1271 | { | |
1272 | sendto_one(target_p, ":%s SQUIT %s :%s", | |
1273 | get_id(from, target_p), get_id(source_p, target_p), | |
1274 | comment); | |
1275 | } | |
1276 | ||
1277 | if(has_id(source_p)) | |
1278 | del_from_id_hash(source_p->id, source_p); | |
1279 | ||
1280 | del_from_client_hash(source_p->name, source_p); | |
1281 | remove_client_from_list(source_p); | |
994544c2 | 1282 | scache_split(source_p->serv->nameinfo); |
212380e3 | 1283 | |
1284 | SetDead(source_p); | |
1285 | #ifdef DEBUG_EXITED_CLIENTS | |
af81d5a0 | 1286 | rb_dlinkAddAlloc(source_p, &dead_remote_list); |
212380e3 | 1287 | #else |
af81d5a0 | 1288 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 | 1289 | #endif |
1290 | return 0; | |
1291 | } | |
1292 | ||
1293 | static int | |
1294 | qs_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1295 | const char *comment) | |
1296 | { | |
212380e3 | 1297 | if(source_p->servptr && source_p->servptr->serv) |
af81d5a0 | 1298 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 | 1299 | else |
1300 | s_assert(0); | |
1301 | ||
af81d5a0 | 1302 | rb_dlinkFindDestroy(source_p, &global_serv_list); |
212380e3 | 1303 | |
1304 | if(has_id(source_p)) | |
1305 | del_from_id_hash(source_p->id, source_p); | |
1306 | ||
1307 | del_from_client_hash(source_p->name, source_p); | |
1308 | remove_client_from_list(source_p); | |
4f5ec033 | 1309 | scache_split(source_p->serv->nameinfo); |
212380e3 | 1310 | |
1311 | SetDead(source_p); | |
af81d5a0 | 1312 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 | 1313 | return 0; |
1314 | } | |
1315 | ||
1316 | static int | |
1317 | exit_local_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1318 | const char *comment) | |
1319 | { | |
1320 | static char comment1[(HOSTLEN*2)+2]; | |
1321 | static char newcomment[BUFSIZE]; | |
1322 | unsigned int sendk, recvk; | |
1323 | ||
af81d5a0 WP |
1324 | rb_dlinkDelete(&source_p->localClient->tnode, &serv_list); |
1325 | rb_dlinkFindDestroy(source_p, &global_serv_list); | |
212380e3 | 1326 | |
1327 | unset_chcap_usage_counts(source_p); | |
1328 | sendk = source_p->localClient->sendK; | |
1329 | recvk = source_p->localClient->receiveK; | |
1330 | ||
1331 | /* Always show source here, so the server notices show | |
1332 | * which side initiated the split -- jilles | |
1333 | */ | |
38e6acdd | 1334 | rb_snprintf(newcomment, sizeof(newcomment), "by %s: %s", |
212380e3 | 1335 | from == source_p ? me.name : from->name, comment); |
1336 | if (!IsIOError(source_p)) | |
1337 | sendto_one(source_p, "SQUIT %s :%s", use_id(source_p), | |
1338 | newcomment); | |
1339 | if(client_p != NULL && source_p != client_p && !IsIOError(source_p)) | |
1340 | { | |
1341 | sendto_one(source_p, "ERROR :Closing Link: 127.0.0.1 %s (%s)", | |
1342 | source_p->name, comment); | |
1343 | } | |
1344 | ||
212380e3 | 1345 | if(source_p->servptr && source_p->servptr->serv) |
af81d5a0 | 1346 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 | 1347 | else |
1348 | s_assert(0); | |
1349 | ||
1350 | ||
1351 | close_connection(source_p); | |
1352 | ||
1353 | if(ConfigServerHide.flatten_links) | |
1354 | strcpy(comment1, "*.net *.split"); | |
1355 | else | |
1356 | { | |
66c8fdd2 | 1357 | strcpy(comment1, source_p->servptr->name); |
212380e3 | 1358 | strcat(comment1, " "); |
1359 | strcat(comment1, source_p->name); | |
1360 | } | |
1361 | ||
1362 | if(source_p->serv != NULL) | |
1363 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1364 | ||
1365 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s was connected" | |
1366 | " for %ld seconds. %d/%d sendK/recvK.", | |
784fdac0 | 1367 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); |
212380e3 | 1368 | |
1369 | ilog(L_SERVER, "%s was connected for %ld seconds. %d/%d sendK/recvK.", | |
784fdac0 | 1370 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); |
212380e3 | 1371 | |
1372 | if(has_id(source_p)) | |
1373 | del_from_id_hash(source_p->id, source_p); | |
1374 | ||
1375 | del_from_client_hash(source_p->name, source_p); | |
1376 | remove_client_from_list(source_p); | |
994544c2 | 1377 | scache_split(source_p->serv->nameinfo); |
212380e3 | 1378 | |
1379 | SetDead(source_p); | |
af81d5a0 | 1380 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 | 1381 | return 0; |
1382 | } | |
1383 | ||
1384 | ||
1385 | /* | |
1386 | * This assumes IsPerson(source_p) == TRUE && MyConnect(source_p) == TRUE | |
1387 | */ | |
1388 | ||
1389 | static int | |
1390 | exit_local_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1391 | const char *comment) | |
1392 | { | |
1393 | unsigned long on_for; | |
08a5f1f9 | 1394 | char tbuf[26]; |
212380e3 | 1395 | |
1396 | exit_generic_client(client_p, source_p, from, comment); | |
1397 | clear_monitor(source_p); | |
1398 | ||
1399 | s_assert(IsPerson(source_p)); | |
af81d5a0 WP |
1400 | rb_dlinkDelete(&source_p->localClient->tnode, &lclient_list); |
1401 | rb_dlinkDelete(&source_p->lnode, &me.serv->users); | |
212380e3 | 1402 | |
1403 | if(IsOper(source_p)) | |
af81d5a0 | 1404 | rb_dlinkFindDestroy(source_p, &local_oper_list); |
212380e3 | 1405 | |
1406 | sendto_realops_snomask(SNO_CCONN, L_ALL, | |
1407 | "Client exiting: %s (%s@%s) [%s] [%s]", | |
1408 | source_p->name, | |
1409 | source_p->username, source_p->host, comment, | |
1410 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255"); | |
1411 | ||
1412 | sendto_realops_snomask(SNO_CCONNEXT, L_ALL, | |
1413 | "CLIEXIT %s %s %s %s 0 %s", | |
1414 | source_p->name, source_p->username, source_p->host, | |
1415 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255", | |
1416 | comment); | |
1417 | ||
9f6bbe3c | 1418 | on_for = rb_current_time() - source_p->localClient->firsttime; |
212380e3 | 1419 | |
f8d9b229 | 1420 | ilog(L_USER, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d", |
08a5f1f9 | 1421 | rb_ctime(rb_current_time(), tbuf, sizeof(tbuf)), on_for / 3600, |
212380e3 | 1422 | (on_for % 3600) / 60, on_for % 60, |
1423 | source_p->name, source_p->username, source_p->host, | |
f8d9b229 | 1424 | source_p->sockhost, |
212380e3 | 1425 | source_p->localClient->sendK, source_p->localClient->receiveK); |
1426 | ||
1427 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", source_p->host, comment); | |
1428 | close_connection(source_p); | |
1429 | ||
1430 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1431 | { | |
1432 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1433 | ":%s QUIT :%s", use_id(source_p), comment); | |
212380e3 | 1434 | } |
1435 | ||
1436 | SetDead(source_p); | |
af81d5a0 | 1437 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 | 1438 | return(CLIENT_EXITED); |
1439 | } | |
1440 | ||
1441 | ||
1442 | /* | |
1443 | ** exit_client - This is old "m_bye". Name changed, because this is not a | |
1444 | ** protocol function, but a general server utility function. | |
1445 | ** | |
1446 | ** This function exits a client of *any* type (user, server, etc) | |
1447 | ** from this server. Also, this generates all necessary prototol | |
1448 | ** messages that this exit may cause. | |
1449 | ** | |
1450 | ** 1) If the client is a local client, then this implicitly | |
1451 | ** exits all other clients depending on this connection (e.g. | |
1452 | ** remote clients having 'from'-field that points to this. | |
1453 | ** | |
1454 | ** 2) If the client is a remote client, then only this is exited. | |
1455 | ** | |
1456 | ** For convenience, this function returns a suitable value for | |
1457 | ** m_function return value: | |
1458 | ** | |
1459 | ** CLIENT_EXITED if (client_p == source_p) | |
1460 | ** 0 if (client_p != source_p) | |
1461 | */ | |
1462 | int | |
1463 | exit_client(struct Client *client_p, /* The local client originating the | |
1464 | * exit or NULL, if this exit is | |
1465 | * generated by this server for | |
1466 | * internal reasons. | |
1467 | * This will not get any of the | |
1468 | * generated messages. */ | |
1469 | struct Client *source_p, /* Client exiting */ | |
1470 | struct Client *from, /* Client firing off this Exit, | |
1471 | * never NULL! */ | |
1472 | const char *comment /* Reason for the exit */ | |
1473 | ) | |
1474 | { | |
1475 | hook_data_client_exit hdata; | |
1476 | if(IsClosing(source_p)) | |
1477 | return -1; | |
1478 | ||
1479 | /* note, this HAS to be here, when we exit a client we attempt to | |
1480 | * send them data, if this generates a write error we must *not* add | |
1481 | * them to the abort list --fl | |
1482 | */ | |
1483 | SetClosing(source_p); | |
1484 | ||
1485 | hdata.local_link = client_p; | |
1486 | hdata.target = source_p; | |
1487 | hdata.from = from; | |
1488 | hdata.comment = comment; | |
1489 | call_hook(h_client_exit, &hdata); | |
1490 | ||
1491 | if(MyConnect(source_p)) | |
1492 | { | |
1493 | /* Local clients of various types */ | |
1494 | if(IsPerson(source_p)) | |
1495 | return exit_local_client(client_p, source_p, from, comment); | |
1496 | else if(IsServer(source_p)) | |
1497 | return exit_local_server(client_p, source_p, from, comment); | |
1498 | /* IsUnknown || IsConnecting || IsHandShake */ | |
1499 | else if(!IsReject(source_p)) | |
1500 | return exit_unknown_client(client_p, source_p, from, comment); | |
1501 | } | |
1502 | else | |
1503 | { | |
1504 | /* Remotes */ | |
1505 | if(IsPerson(source_p)) | |
1506 | return exit_remote_client(client_p, source_p, from, comment); | |
1507 | else if(IsServer(source_p)) | |
1508 | return exit_remote_server(client_p, source_p, from, comment); | |
1509 | } | |
1510 | ||
1511 | return -1; | |
1512 | } | |
1513 | ||
1514 | /* | |
1515 | * Count up local client memory | |
1516 | */ | |
1517 | ||
1518 | /* XXX one common Client list now */ | |
1519 | void | |
1520 | count_local_client_memory(size_t * count, size_t * local_client_memory_used) | |
1521 | { | |
ae4091d2 JT |
1522 | size_t lusage; |
1523 | rb_bh_usage(lclient_heap, count, NULL, &lusage, NULL); | |
784fdac0 | 1524 | *local_client_memory_used = lusage + (*count * (sizeof(void *) + sizeof(struct Client))); |
212380e3 | 1525 | } |
1526 | ||
1527 | /* | |
1528 | * Count up remote client memory | |
1529 | */ | |
1530 | void | |
1531 | count_remote_client_memory(size_t * count, size_t * remote_client_memory_used) | |
1532 | { | |
ae4091d2 JT |
1533 | size_t lcount, rcount; |
1534 | rb_bh_usage(lclient_heap, &lcount, NULL, NULL, NULL); | |
1535 | rb_bh_usage(client_heap, &rcount, NULL, NULL, NULL); | |
1536 | *count = rcount - lcount; | |
784fdac0 | 1537 | *remote_client_memory_used = *count * (sizeof(void *) + sizeof(struct Client)); |
212380e3 | 1538 | } |
1539 | ||
1540 | ||
1541 | /* | |
1542 | * accept processing, this adds a form of "caller ID" to ircd | |
1543 | * | |
1544 | * If a client puts themselves into "caller ID only" mode, | |
1545 | * only clients that match a client pointer they have put on | |
1546 | * the accept list will be allowed to message them. | |
1547 | * | |
1548 | * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ] | |
1549 | * | |
1550 | * [target.allow_list] -> [ source1 ] -> [source2 ] | |
1551 | * | |
1552 | * i.e. a target will have a link list of source pointers it will allow | |
1553 | * each source client then has a back pointer pointing back | |
1554 | * to the client that has it on its accept list. | |
1555 | * This allows for exit_one_client to remove these now bogus entries | |
1556 | * from any client having an accept on them. | |
1557 | */ | |
1558 | /* | |
1559 | * del_all_accepts | |
1560 | * | |
1561 | * inputs - pointer to exiting client | |
1562 | * output - NONE | |
1563 | * side effects - Walk through given clients allow_list and on_allow_list | |
1564 | * remove all references to this client | |
1565 | */ | |
1566 | void | |
1567 | del_all_accepts(struct Client *client_p) | |
1568 | { | |
af81d5a0 | 1569 | rb_dlink_node *ptr; |
90a3c35b | 1570 | rb_dlink_node *next_ptr; |
212380e3 | 1571 | struct Client *target_p; |
1572 | ||
1573 | if(MyClient(client_p) && client_p->localClient->allow_list.head) | |
1574 | { | |
1575 | /* clear this clients accept list, and remove them from | |
1576 | * everyones on_accept_list | |
1577 | */ | |
90a3c35b | 1578 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->allow_list.head) |
212380e3 | 1579 | { |
1580 | target_p = ptr->data; | |
af81d5a0 WP |
1581 | rb_dlinkFindDestroy(client_p, &target_p->on_allow_list); |
1582 | rb_dlinkDestroy(ptr, &client_p->localClient->allow_list); | |
212380e3 | 1583 | } |
1584 | } | |
1585 | ||
1586 | /* remove this client from everyones accept list */ | |
90a3c35b | 1587 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) |
212380e3 | 1588 | { |
1589 | target_p = ptr->data; | |
af81d5a0 WP |
1590 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); |
1591 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
212380e3 | 1592 | } |
1593 | } | |
1594 | ||
1595 | /* | |
1596 | * show_ip() - asks if the true IP shoudl be shown when source is | |
1597 | * askin for info about target | |
1598 | * | |
1599 | * Inputs - source_p who is asking | |
1600 | * - target_p who do we want the info on | |
1601 | * Output - returns 1 if clear IP can be showed, otherwise 0 | |
1602 | * Side Effects - none | |
1603 | */ | |
1604 | ||
1605 | int | |
1606 | show_ip(struct Client *source_p, struct Client *target_p) | |
1607 | { | |
1608 | if(IsAnyServer(target_p)) | |
1609 | { | |
212380e3 | 1610 | return 0; |
1611 | } | |
1612 | else if(IsIPSpoof(target_p)) | |
1613 | { | |
1614 | /* source == NULL indicates message is being sent | |
1615 | * to local opers. | |
1616 | */ | |
1617 | if(!ConfigFileEntry.hide_spoof_ips && | |
1618 | (source_p == NULL || MyOper(source_p))) | |
1619 | return 1; | |
1620 | return 0; | |
1621 | } | |
1622 | else if(IsDynSpoof(target_p) && (source_p != NULL && !IsOper(source_p))) | |
1623 | return 0; | |
1624 | else | |
1625 | return 1; | |
1626 | } | |
1627 | ||
1628 | int | |
1629 | show_ip_conf(struct ConfItem *aconf, struct Client *source_p) | |
1630 | { | |
1631 | if(IsConfDoSpoofIp(aconf)) | |
1632 | { | |
1633 | if(!ConfigFileEntry.hide_spoof_ips && MyOper(source_p)) | |
1634 | return 1; | |
1635 | ||
1636 | return 0; | |
1637 | } | |
1638 | else | |
1639 | return 1; | |
1640 | } | |
1641 | ||
212380e3 | 1642 | /* |
1643 | * make_user | |
1644 | * | |
1645 | * inputs - pointer to client struct | |
1646 | * output - pointer to struct User | |
1647 | * side effects - add's an User information block to a client | |
1648 | * if it was not previously allocated. | |
1649 | */ | |
1650 | struct User * | |
1651 | make_user(struct Client *client_p) | |
1652 | { | |
1653 | struct User *user; | |
1654 | ||
1655 | user = client_p->user; | |
1656 | if(!user) | |
1657 | { | |
6e9b4415 | 1658 | user = (struct User *) rb_bh_alloc(user_heap); |
212380e3 | 1659 | user->refcnt = 1; |
1660 | client_p->user = user; | |
1661 | } | |
1662 | return user; | |
1663 | } | |
1664 | ||
1665 | /* | |
1666 | * make_server | |
1667 | * | |
1668 | * inputs - pointer to client struct | |
1669 | * output - pointer to server_t | |
1670 | * side effects - add's an Server information block to a client | |
1671 | * if it was not previously allocated. | |
1672 | */ | |
1673 | server_t * | |
1674 | make_server(struct Client *client_p) | |
1675 | { | |
1676 | server_t *serv = client_p->serv; | |
1677 | ||
1678 | if(!serv) | |
1679 | { | |
8e43b0b4 | 1680 | serv = (server_t *) rb_malloc(sizeof(server_t)); |
212380e3 | 1681 | client_p->serv = serv; |
1682 | } | |
1683 | return client_p->serv; | |
1684 | } | |
1685 | ||
1686 | /* | |
1687 | * free_user | |
1688 | * | |
1689 | * inputs - pointer to user struct | |
1690 | * - pointer to client struct | |
1691 | * output - none | |
1692 | * side effects - Decrease user reference count by one and release block, | |
1693 | * if count reaches 0 | |
1694 | */ | |
1695 | void | |
1696 | free_user(struct User *user, struct Client *client_p) | |
1697 | { | |
c387fc41 SB |
1698 | free_away(client_p); |
1699 | ||
212380e3 | 1700 | if(--user->refcnt <= 0) |
1701 | { | |
c387fc41 SB |
1702 | if(user->away) |
1703 | rb_free((char *) user->away); | |
212380e3 | 1704 | /* |
1705 | * sanity check | |
1706 | */ | |
1707 | if(user->refcnt < 0 || user->invited.head || user->channel.head) | |
1708 | { | |
1709 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1710 | "* %#lx user (%s!%s@%s) %#lx %#lx %#lx %lu %d *", | |
1711 | (unsigned long) client_p, | |
1712 | client_p ? client_p-> | |
1713 | name : "<noname>", | |
1714 | client_p->username, | |
1715 | client_p->host, | |
1716 | (unsigned long) user, | |
1717 | (unsigned long) user->invited.head, | |
1718 | (unsigned long) user->channel.head, | |
af81d5a0 | 1719 | rb_dlink_list_length(&user->channel), |
212380e3 | 1720 | user->refcnt); |
1721 | s_assert(!user->refcnt); | |
1722 | s_assert(!user->invited.head); | |
1723 | s_assert(!user->channel.head); | |
1724 | } | |
1725 | ||
6e9b4415 | 1726 | rb_bh_free(user_heap, user); |
212380e3 | 1727 | } |
1728 | } | |
1729 | ||
e5847c3e | 1730 | void |
c387fc41 | 1731 | allocate_away(struct Client *client_p) |
e5847c3e | 1732 | { |
c387fc41 SB |
1733 | if(client_p->user->away == NULL) |
1734 | client_p->user->away = rb_bh_alloc(away_heap); | |
e5847c3e WP |
1735 | } |
1736 | ||
c387fc41 | 1737 | |
e5847c3e | 1738 | void |
c387fc41 | 1739 | free_away(struct Client *client_p) |
e5847c3e | 1740 | { |
c387fc41 SB |
1741 | if(client_p->user != NULL && client_p->user->away != NULL) { |
1742 | rb_bh_free(away_heap, client_p->user->away); | |
1743 | client_p->user->away = NULL; | |
e5847c3e WP |
1744 | } |
1745 | } | |
1746 | ||
212380e3 | 1747 | void |
1748 | init_uid(void) | |
1749 | { | |
1750 | int i; | |
1751 | ||
1752 | for(i = 0; i < 3; i++) | |
1753 | current_uid[i] = me.id[i]; | |
1754 | ||
1755 | for(i = 3; i < 9; i++) | |
1756 | current_uid[i] = 'A'; | |
1757 | ||
1758 | current_uid[9] = '\0'; | |
1759 | } | |
1760 | ||
1761 | ||
1762 | char * | |
1763 | generate_uid(void) | |
1764 | { | |
1765 | int i; | |
1766 | ||
1767 | for(i = 8; i > 3; i--) | |
1768 | { | |
1769 | if(current_uid[i] == 'Z') | |
1770 | { | |
1771 | current_uid[i] = '0'; | |
1772 | return current_uid; | |
1773 | } | |
1774 | else if(current_uid[i] != '9') | |
1775 | { | |
1776 | current_uid[i]++; | |
1777 | return current_uid; | |
1778 | } | |
1779 | else | |
1780 | current_uid[i] = 'A'; | |
1781 | } | |
1782 | ||
1783 | /* if this next if() triggers, we're fucked. */ | |
1784 | if(current_uid[3] == 'Z') | |
1785 | { | |
1786 | current_uid[i] = 'A'; | |
1787 | s_assert(0); | |
1788 | } | |
1789 | else | |
1790 | current_uid[i]++; | |
1791 | ||
1792 | return current_uid; | |
1793 | } | |
1794 | ||
1795 | /* | |
1796 | * close_connection | |
1797 | * Close the physical connection. This function must make | |
1798 | * MyConnect(client_p) == FALSE, and set client_p->from == NULL. | |
1799 | */ | |
1800 | void | |
1801 | close_connection(struct Client *client_p) | |
1802 | { | |
1803 | s_assert(client_p != NULL); | |
1804 | if(client_p == NULL) | |
1805 | return; | |
1806 | ||
1807 | s_assert(MyConnect(client_p)); | |
1808 | if(!MyConnect(client_p)) | |
1809 | return; | |
1810 | ||
1811 | if(IsServer(client_p)) | |
1812 | { | |
1813 | struct server_conf *server_p; | |
1814 | ||
b717a466 JT |
1815 | ServerStats.is_sv++; |
1816 | ServerStats.is_sbs += client_p->localClient->sendB; | |
1817 | ServerStats.is_sbr += client_p->localClient->receiveB; | |
17d00839 | 1818 | ServerStats.is_sti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); |
212380e3 | 1819 | |
1820 | /* | |
1821 | * If the connection has been up for a long amount of time, schedule | |
1822 | * a 'quick' reconnect, else reset the next-connect cycle. | |
1823 | */ | |
1824 | if((server_p = find_server_conf(client_p->name)) != NULL) | |
1825 | { | |
1826 | /* | |
1827 | * Reschedule a faster reconnect, if this was a automatically | |
1828 | * connected configuration entry. (Note that if we have had | |
1829 | * a rehash in between, the status has been changed to | |
1830 | * CONF_ILLEGAL). But only do this if it was a "good" link. | |
1831 | */ | |
1832 | server_p->hold = time(NULL); | |
1833 | server_p->hold += | |
1834 | (server_p->hold - client_p->localClient->lasttime > | |
1835 | HANGONGOODLINK) ? HANGONRETRYDELAY : ConFreq(server_p->class); | |
1836 | } | |
1837 | ||
1838 | } | |
1839 | else if(IsClient(client_p)) | |
1840 | { | |
b717a466 JT |
1841 | ServerStats.is_cl++; |
1842 | ServerStats.is_cbs += client_p->localClient->sendB; | |
1843 | ServerStats.is_cbr += client_p->localClient->receiveB; | |
17d00839 | 1844 | ServerStats.is_cti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); |
212380e3 | 1845 | } |
1846 | else | |
83251205 | 1847 | ServerStats.is_ni++; |
21c9d815 | 1848 | |
8db00894 | 1849 | if(client_p->localClient->F != NULL) |
21c9d815 VY |
1850 | { |
1851 | /* attempt to flush any pending dbufs. Evil, but .. -- adrian */ | |
1852 | if(!IsIOError(client_p)) | |
1853 | send_queued(client_p); | |
1854 | ||
8db00894 | 1855 | del_from_cli_fd_hash(client_p); |
21c9d815 VY |
1856 | rb_close(client_p->localClient->F); |
1857 | client_p->localClient->F = NULL; | |
1858 | } | |
1859 | ||
527ec911 JT |
1860 | rb_linebuf_donebuf(&client_p->localClient->buf_sendq); |
1861 | rb_linebuf_donebuf(&client_p->localClient->buf_recvq); | |
212380e3 | 1862 | detach_conf(client_p); |
1863 | ||
1864 | /* XXX shouldnt really be done here. */ | |
1865 | detach_server_conf(client_p); | |
1866 | ||
1867 | client_p->from = NULL; /* ...this should catch them! >:) --msa */ | |
1868 | ClearMyConnect(client_p); | |
1869 | SetIOError(client_p); | |
1870 | } | |
1871 | ||
1872 | ||
1873 | ||
1874 | void | |
1875 | error_exit_client(struct Client *client_p, int error) | |
1876 | { | |
1877 | /* | |
1878 | * ...hmm, with non-blocking sockets we might get | |
1879 | * here from quite valid reasons, although.. why | |
1880 | * would select report "data available" when there | |
1881 | * wasn't... so, this must be an error anyway... --msa | |
1882 | * actually, EOF occurs when read() returns 0 and | |
1883 | * in due course, select() returns that fd as ready | |
1884 | * for reading even though it ends up being an EOF. -avalon | |
1885 | */ | |
1886 | char errmsg[255]; | |
527ec911 | 1887 | int current_error = rb_get_sockerr(client_p->localClient->F); |
212380e3 | 1888 | |
1889 | SetIOError(client_p); | |
1890 | ||
1891 | if(IsServer(client_p) || IsHandshake(client_p)) | |
1892 | { | |
212380e3 | 1893 | if(error == 0) |
1894 | { | |
1895 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
1896 | "Server %s closed the connection", | |
715b28fe | 1897 | client_p->name); |
212380e3 | 1898 | |
1899 | ilog(L_SERVER, "Server %s closed the connection", | |
1900 | log_client_name(client_p, SHOW_IP)); | |
1901 | } | |
1902 | else | |
1903 | { | |
1904 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
1905 | "Lost connection to %s: %s", | |
1906 | client_p->name, strerror(current_error)); | |
1907 | ilog(L_SERVER, "Lost connection to %s: %s", | |
1908 | log_client_name(client_p, SHOW_IP), strerror(current_error)); | |
1909 | } | |
212380e3 | 1910 | } |
1911 | ||
1912 | if(error == 0) | |
907468c4 | 1913 | rb_strlcpy(errmsg, "Remote host closed the connection", sizeof(errmsg)); |
212380e3 | 1914 | else |
38e6acdd | 1915 | rb_snprintf(errmsg, sizeof(errmsg), "Read error: %s", strerror(current_error)); |
212380e3 | 1916 | |
1917 | exit_client(client_p, client_p, &me, errmsg); | |
1918 | } |