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Commit | Line | Data |
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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 | ||
212380e3 AC |
30 | #include "client.h" |
31 | #include "class.h" | |
32 | #include "common.h" | |
212380e3 | 33 | #include "hash.h" |
4562c604 | 34 | #include "match.h" |
212380e3 | 35 | #include "ircd.h" |
212380e3 AC |
36 | #include "numeric.h" |
37 | #include "packet.h" | |
38 | #include "s_auth.h" | |
212380e3 AC |
39 | #include "s_conf.h" |
40 | #include "s_newconf.h" | |
4016731b | 41 | #include "logger.h" |
212380e3 AC |
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 AC |
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" |
c6d72037 | 57 | #include "sslproc.h" |
77d3d2db | 58 | #include "s_assert.h" |
212380e3 AC |
59 | |
60 | #define DEBUG_EXITED_CLIENTS | |
61 | ||
330fc5c1 AC |
62 | static void check_pings_list(rb_dlink_list * list); |
63 | static void check_unknowns_list(rb_dlink_list * list); | |
212380e3 AC |
64 | static void free_exited_clients(void *unused); |
65 | static void exit_aborted_clients(void *unused); | |
66 | ||
67 | static int exit_remote_client(struct Client *, struct Client *, struct Client *,const char *); | |
68 | static int exit_remote_server(struct Client *, struct Client *, struct Client *,const char *); | |
69 | static int exit_local_client(struct Client *, struct Client *, struct Client *,const char *); | |
70 | static int exit_unknown_client(struct Client *, struct Client *, struct Client *,const char *); | |
71 | static int exit_local_server(struct Client *, struct Client *, struct Client *,const char *); | |
72 | static int qs_server(struct Client *, struct Client *, struct Client *, const char *comment); | |
73 | ||
74 | static EVH check_pings; | |
75 | ||
5433b83e VY |
76 | static rb_bh *client_heap = NULL; |
77 | static rb_bh *lclient_heap = NULL; | |
b09cbaa3 | 78 | static rb_bh *pclient_heap = NULL; |
5433b83e | 79 | static rb_bh *user_heap = NULL; |
c127b45b | 80 | static rb_bh *away_heap = NULL; |
5433b83e | 81 | static char current_uid[IDLEN]; |
212380e3 | 82 | |
43de0f45 AC |
83 | struct Dictionary *nd_dict = NULL; |
84 | ||
212380e3 AC |
85 | enum |
86 | { | |
87 | D_LINED, | |
aae358c0 | 88 | K_LINED |
212380e3 AC |
89 | }; |
90 | ||
330fc5c1 | 91 | rb_dlink_list dead_list; |
212380e3 | 92 | #ifdef DEBUG_EXITED_CLIENTS |
330fc5c1 | 93 | static rb_dlink_list dead_remote_list; |
212380e3 AC |
94 | #endif |
95 | ||
96 | struct abort_client | |
97 | { | |
330fc5c1 | 98 | rb_dlink_node node; |
212380e3 AC |
99 | struct Client *client; |
100 | char notice[REASONLEN]; | |
101 | }; | |
102 | ||
330fc5c1 | 103 | static rb_dlink_list abort_list; |
212380e3 AC |
104 | |
105 | ||
106 | /* | |
107 | * init_client | |
108 | * | |
109 | * inputs - NONE | |
110 | * output - NONE | |
111 | * side effects - initialize client free memory | |
112 | */ | |
113 | void | |
114 | init_client(void) | |
115 | { | |
116 | /* | |
117 | * start off the check ping event .. -- adrian | |
118 | * Every 30 seconds is plenty -- db | |
119 | */ | |
1087485c | 120 | client_heap = rb_bh_create(sizeof(struct Client), CLIENT_HEAP_SIZE, "client_heap"); |
adc6cc42 VY |
121 | lclient_heap = rb_bh_create(sizeof(struct LocalUser), LCLIENT_HEAP_SIZE, "lclient_heap"); |
122 | pclient_heap = rb_bh_create(sizeof(struct PreClient), PCLIENT_HEAP_SIZE, "pclient_heap"); | |
b09cbaa3 | 123 | user_heap = rb_bh_create(sizeof(struct User), USER_HEAP_SIZE, "user_heap"); |
c127b45b | 124 | away_heap = rb_bh_create(AWAYLEN, AWAY_HEAP_SIZE, "away_heap"); |
adc6cc42 | 125 | |
3b2ebd04 JT |
126 | rb_event_addish("check_pings", check_pings, NULL, 30); |
127 | rb_event_addish("free_exited_clients", &free_exited_clients, NULL, 4); | |
128 | rb_event_addish("exit_aborted_clients", exit_aborted_clients, NULL, 1); | |
5a606a8f | 129 | rb_event_add("flood_recalc", flood_recalc, NULL, 1); |
43de0f45 AC |
130 | |
131 | nd_dict = irc_dictionary_create(irccmp); | |
212380e3 AC |
132 | } |
133 | ||
134 | ||
135 | /* | |
136 | * make_client - create a new Client struct and set it to initial state. | |
137 | * | |
138 | * from == NULL, create local client (a client connected | |
139 | * to a socket). | |
140 | * | |
141 | * from, create remote client (behind a socket | |
142 | * associated with the client defined by | |
143 | * 'from'). ('from' is a local client!!). | |
144 | */ | |
145 | struct Client * | |
146 | make_client(struct Client *from) | |
147 | { | |
148 | struct Client *client_p = NULL; | |
149 | struct LocalUser *localClient; | |
150 | ||
398b6a73 | 151 | client_p = rb_bh_alloc(client_heap); |
212380e3 AC |
152 | |
153 | if(from == NULL) | |
154 | { | |
155 | client_p->from = client_p; /* 'from' of local client is self! */ | |
156 | ||
b09cbaa3 | 157 | localClient = rb_bh_alloc(lclient_heap); |
212380e3 AC |
158 | SetMyConnect(client_p); |
159 | client_p->localClient = localClient; | |
160 | ||
e3354945 | 161 | client_p->localClient->lasttime = client_p->localClient->firsttime = rb_current_time(); |
212380e3 | 162 | |
c5c2f506 | 163 | client_p->localClient->F = NULL; |
212380e3 | 164 | |
5ef68b13 | 165 | client_p->preClient = rb_bh_alloc(pclient_heap); |
212380e3 AC |
166 | |
167 | /* as good a place as any... */ | |
330fc5c1 | 168 | rb_dlinkAdd(client_p, &client_p->localClient->tnode, &unknown_list); |
212380e3 AC |
169 | } |
170 | else | |
171 | { /* from is not NULL */ | |
172 | client_p->localClient = NULL; | |
173 | client_p->preClient = NULL; | |
174 | client_p->from = from; /* 'from' of local client is self! */ | |
175 | } | |
176 | ||
177 | SetUnknown(client_p); | |
178 | strcpy(client_p->username, "unknown"); | |
179 | ||
180 | return client_p; | |
181 | } | |
182 | ||
183 | void | |
184 | free_pre_client(struct Client *client_p) | |
185 | { | |
186 | struct Blacklist *blptr; | |
187 | ||
188 | s_assert(NULL != client_p); | |
189 | ||
190 | if(client_p->preClient == NULL) | |
191 | return; | |
192 | ||
193 | blptr = client_p->preClient->dnsbl_listed; | |
194 | if (blptr != NULL) | |
195 | unref_blacklist(blptr); | |
7fc09bc4 KB |
196 | s_assert(rb_dlink_list_length(&client_p->preClient->dnsbl_queries) == 0); |
197 | ||
398b6a73 | 198 | rb_bh_free(pclient_heap, client_p->preClient); |
212380e3 AC |
199 | client_p->preClient = NULL; |
200 | } | |
201 | ||
202 | static void | |
203 | free_local_client(struct Client *client_p) | |
204 | { | |
205 | s_assert(NULL != client_p); | |
206 | s_assert(&me != client_p); | |
207 | ||
208 | if(client_p->localClient == NULL) | |
209 | return; | |
210 | ||
211 | /* | |
212 | * clean up extra sockets from P-lines which have been discarded. | |
213 | */ | |
214 | if(client_p->localClient->listener) | |
215 | { | |
216 | s_assert(0 < client_p->localClient->listener->ref_count); | |
217 | if(0 == --client_p->localClient->listener->ref_count | |
218 | && !client_p->localClient->listener->active) | |
219 | free_listener(client_p->localClient->listener); | |
220 | client_p->localClient->listener = 0; | |
221 | } | |
222 | ||
c6d72037 VY |
223 | if(client_p->localClient->F != NULL) |
224 | { | |
225 | del_from_cli_fd_hash(client_p); | |
3b2ebd04 | 226 | rb_close(client_p->localClient->F); |
c6d72037 | 227 | } |
212380e3 AC |
228 | |
229 | if(client_p->localClient->passwd) | |
230 | { | |
231 | memset(client_p->localClient->passwd, 0, | |
232 | strlen(client_p->localClient->passwd)); | |
637c4932 | 233 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
234 | } |
235 | ||
90afc118 | 236 | rb_free(client_p->localClient->auth_user); |
637c4932 VY |
237 | rb_free(client_p->localClient->challenge); |
238 | rb_free(client_p->localClient->fullcaps); | |
239 | rb_free(client_p->localClient->opername); | |
240 | rb_free(client_p->localClient->mangledhost); | |
0e52d0d4 JT |
241 | if (client_p->localClient->privset) |
242 | privilegeset_unref(client_p->localClient->privset); | |
212380e3 | 243 | |
a4165b42 AS |
244 | if(IsSSL(client_p)) |
245 | ssld_decrement_clicount(client_p->localClient->ssl_ctl); | |
246 | ||
247 | if(IsCapable(client_p, CAP_ZIP)) | |
248 | ssld_decrement_clicount(client_p->localClient->z_ctl); | |
c6d72037 | 249 | |
398b6a73 | 250 | rb_bh_free(lclient_heap, client_p->localClient); |
212380e3 AC |
251 | client_p->localClient = NULL; |
252 | } | |
253 | ||
254 | void | |
255 | free_client(struct Client *client_p) | |
256 | { | |
257 | s_assert(NULL != client_p); | |
258 | s_assert(&me != client_p); | |
259 | free_local_client(client_p); | |
260 | free_pre_client(client_p); | |
8eda114a | 261 | rb_free(client_p->certfp); |
398b6a73 | 262 | rb_bh_free(client_heap, client_p); |
212380e3 AC |
263 | } |
264 | ||
265 | /* | |
266 | * check_pings - go through the local client list and check activity | |
267 | * kill off stuff that should die | |
268 | * | |
269 | * inputs - NOT USED (from event) | |
270 | * output - next time_t when check_pings() should be called again | |
271 | * side effects - | |
272 | * | |
273 | * | |
274 | * A PING can be sent to clients as necessary. | |
275 | * | |
276 | * Client/Server ping outs are handled. | |
277 | */ | |
278 | ||
279 | /* | |
280 | * Addon from adrian. We used to call this after nextping seconds, | |
281 | * however I've changed it to run once a second. This is only for | |
282 | * PING timeouts, not K/etc-line checks (thanks dianora!). Having it | |
283 | * run once a second makes life a lot easier - when a new client connects | |
284 | * and they need a ping in 4 seconds, if nextping was set to 20 seconds | |
285 | * we end up waiting 20 seconds. This is stupid. :-) | |
286 | * I will optimise (hah!) check_pings() once I've finished working on | |
287 | * tidying up other network IO evilnesses. | |
288 | * -- adrian | |
289 | */ | |
290 | ||
291 | static void | |
292 | check_pings(void *notused) | |
293 | { | |
294 | check_pings_list(&lclient_list); | |
295 | check_pings_list(&serv_list); | |
296 | check_unknowns_list(&unknown_list); | |
297 | } | |
298 | ||
299 | /* | |
300 | * Check_pings_list() | |
301 | * | |
302 | * inputs - pointer to list to check | |
303 | * output - NONE | |
304 | * side effects - | |
305 | */ | |
306 | static void | |
330fc5c1 | 307 | check_pings_list(rb_dlink_list * list) |
212380e3 AC |
308 | { |
309 | char scratch[32]; /* way too generous but... */ | |
310 | struct Client *client_p; /* current local client_p being examined */ | |
311 | int ping = 0; /* ping time value from client */ | |
637c4932 | 312 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 313 | |
637c4932 | 314 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
315 | { |
316 | client_p = ptr->data; | |
317 | ||
212380e3 AC |
318 | if(!MyConnect(client_p) || IsDead(client_p)) |
319 | continue; | |
320 | ||
e2a98043 | 321 | ping = get_client_ping(client_p); |
212380e3 | 322 | |
e3354945 | 323 | if(ping < (rb_current_time() - client_p->localClient->lasttime)) |
212380e3 AC |
324 | { |
325 | /* | |
326 | * If the client/server hasnt talked to us in 2*ping seconds | |
327 | * and it has a ping time, then close its connection. | |
328 | */ | |
e3354945 | 329 | if(((rb_current_time() - client_p->localClient->lasttime) >= (2 * ping) |
212380e3 AC |
330 | && (client_p->flags & FLAGS_PINGSENT))) |
331 | { | |
e2a98043 | 332 | if(IsServer(client_p)) |
212380e3 | 333 | { |
e2a98043 | 334 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 | 335 | "No response from %s, closing link", |
b3ebc7ab | 336 | client_p->name); |
212380e3 AC |
337 | ilog(L_SERVER, |
338 | "No response from %s, closing link", | |
339 | log_client_name(client_p, HIDE_IP)); | |
340 | } | |
b2f0da88 | 341 | (void) rb_snprintf(scratch, sizeof(scratch), |
212380e3 | 342 | "Ping timeout: %d seconds", |
e3354945 | 343 | (int) (rb_current_time() - client_p->localClient->lasttime)); |
212380e3 AC |
344 | |
345 | exit_client(client_p, client_p, &me, scratch); | |
346 | continue; | |
347 | } | |
348 | else if((client_p->flags & FLAGS_PINGSENT) == 0) | |
349 | { | |
350 | /* | |
351 | * if we havent PINGed the connection and we havent | |
352 | * heard from it in a while, PING it to make sure | |
353 | * it is still alive. | |
354 | */ | |
355 | client_p->flags |= FLAGS_PINGSENT; | |
356 | /* not nice but does the job */ | |
e3354945 | 357 | client_p->localClient->lasttime = rb_current_time() - ping; |
212380e3 AC |
358 | sendto_one(client_p, "PING :%s", me.name); |
359 | } | |
360 | } | |
361 | /* ping_timeout: */ | |
362 | ||
363 | } | |
364 | } | |
365 | ||
366 | /* | |
367 | * check_unknowns_list | |
368 | * | |
369 | * inputs - pointer to list of unknown clients | |
370 | * output - NONE | |
371 | * side effects - unknown clients get marked for termination after n seconds | |
372 | */ | |
373 | static void | |
330fc5c1 | 374 | check_unknowns_list(rb_dlink_list * list) |
212380e3 | 375 | { |
637c4932 | 376 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 377 | struct Client *client_p; |
35cf4c79 | 378 | int timeout; |
212380e3 | 379 | |
637c4932 | 380 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
381 | { |
382 | client_p = ptr->data; | |
383 | ||
384 | if(IsDead(client_p) || IsClosing(client_p)) | |
385 | continue; | |
386 | ||
6bb4fb83 JT |
387 | /* still has DNSbls to validate against */ |
388 | if(client_p->preClient != NULL && | |
389 | rb_dlink_list_length(&client_p->preClient->dnsbl_queries) > 0) | |
390 | continue; | |
391 | ||
212380e3 AC |
392 | /* |
393 | * Check UNKNOWN connections - if they have been in this state | |
394 | * for > 30s, close them. | |
395 | */ | |
396 | ||
35cf4c79 | 397 | timeout = IsAnyServer(client_p) ? ConfigFileEntry.connect_timeout : 30; |
e3354945 | 398 | if((rb_current_time() - client_p->localClient->firsttime) > timeout) |
35cf4c79 JT |
399 | { |
400 | if(IsAnyServer(client_p)) | |
401 | { | |
402 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
403 | "No response from %s, closing link", | |
b3ebc7ab | 404 | client_p->name); |
35cf4c79 JT |
405 | ilog(L_SERVER, |
406 | "No response from %s, closing link", | |
407 | log_client_name(client_p, HIDE_IP)); | |
408 | } | |
212380e3 | 409 | exit_client(client_p, client_p, &me, "Connection timed out"); |
35cf4c79 | 410 | } |
212380e3 AC |
411 | } |
412 | } | |
413 | ||
414 | static void | |
415 | notify_banned_client(struct Client *client_p, struct ConfItem *aconf, int ban) | |
416 | { | |
417 | static const char conn_closed[] = "Connection closed"; | |
418 | static const char d_lined[] = "D-lined"; | |
419 | static const char k_lined[] = "K-lined"; | |
212380e3 AC |
420 | const char *reason = NULL; |
421 | const char *exit_reason = conn_closed; | |
422 | ||
a12ad044 | 423 | if(ConfigFileEntry.kline_with_reason) |
212380e3 | 424 | { |
a12ad044 | 425 | reason = get_user_ban_reason(aconf); |
b52c2949 | 426 | exit_reason = reason; |
212380e3 AC |
427 | } |
428 | else | |
429 | { | |
405ae5ce | 430 | reason = aconf->status == D_LINED ? d_lined : k_lined; |
212380e3 AC |
431 | } |
432 | ||
433 | if(ban == D_LINED && !IsPerson(client_p)) | |
434 | sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined"); | |
435 | else | |
436 | sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP), | |
437 | me.name, client_p->name, reason); | |
438 | ||
439 | exit_client(client_p, client_p, &me, | |
440 | EmptyString(ConfigFileEntry.kline_reason) ? exit_reason : | |
441 | ConfigFileEntry.kline_reason); | |
442 | } | |
443 | ||
444 | /* | |
445 | * check_banned_lines | |
446 | * inputs - NONE | |
447 | * output - NONE | |
170703fe | 448 | * side effects - Check all connections for a pending k/dline against the |
212380e3 AC |
449 | * client, exit the client if found. |
450 | */ | |
451 | void | |
452 | check_banned_lines(void) | |
453 | { | |
1bb1f1b0 JT |
454 | check_dlines(); |
455 | check_klines(); | |
456 | check_xlines(); | |
212380e3 AC |
457 | } |
458 | ||
459 | /* check_klines_event() | |
460 | * | |
461 | * inputs - | |
462 | * outputs - | |
463 | * side effects - check_klines() is called, kline_queued unset | |
464 | */ | |
465 | void | |
466 | check_klines_event(void *unused) | |
467 | { | |
468 | kline_queued = 0; | |
469 | check_klines(); | |
470 | } | |
471 | ||
472 | /* check_klines | |
473 | * | |
474 | * inputs - | |
475 | * outputs - | |
476 | * side effects - all clients will be checked for klines | |
477 | */ | |
478 | void | |
479 | check_klines(void) | |
480 | { | |
481 | struct Client *client_p; | |
482 | struct ConfItem *aconf; | |
330fc5c1 | 483 | rb_dlink_node *ptr; |
637c4932 | 484 | rb_dlink_node *next_ptr; |
212380e3 | 485 | |
637c4932 | 486 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
487 | { |
488 | client_p = ptr->data; | |
489 | ||
490 | if(IsMe(client_p) || !IsPerson(client_p)) | |
491 | continue; | |
492 | ||
493 | if((aconf = find_kline(client_p)) != NULL) | |
494 | { | |
495 | if(IsExemptKline(client_p)) | |
496 | { | |
497 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
408024fa JT |
498 | "KLINE over-ruled for %s, client is kline_exempt [%s@%s]", |
499 | get_client_name(client_p, HIDE_IP), | |
500 | aconf->user, aconf->host); | |
212380e3 AC |
501 | continue; |
502 | } | |
503 | ||
504 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
505 | "KLINE active for %s", | |
506 | get_client_name(client_p, HIDE_IP)); | |
507 | ||
508 | notify_banned_client(client_p, aconf, K_LINED); | |
509 | continue; | |
510 | } | |
511 | } | |
512 | } | |
513 | ||
212380e3 AC |
514 | /* check_dlines() |
515 | * | |
516 | * inputs - | |
517 | * outputs - | |
518 | * side effects - all clients will be checked for dlines | |
519 | */ | |
520 | void | |
521 | check_dlines(void) | |
522 | { | |
523 | struct Client *client_p; | |
524 | struct ConfItem *aconf; | |
330fc5c1 | 525 | rb_dlink_node *ptr; |
637c4932 | 526 | rb_dlink_node *next_ptr; |
212380e3 | 527 | |
637c4932 | 528 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
529 | { |
530 | client_p = ptr->data; | |
531 | ||
532 | if(IsMe(client_p)) | |
533 | continue; | |
534 | ||
54ac8b60 | 535 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) |
212380e3 AC |
536 | { |
537 | if(aconf->status & CONF_EXEMPTDLINE) | |
538 | continue; | |
539 | ||
540 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
541 | "DLINE active for %s", | |
542 | get_client_name(client_p, HIDE_IP)); | |
543 | ||
544 | notify_banned_client(client_p, aconf, D_LINED); | |
545 | continue; | |
546 | } | |
547 | } | |
548 | ||
549 | /* dlines need to be checked against unknowns too */ | |
637c4932 | 550 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) |
212380e3 AC |
551 | { |
552 | client_p = ptr->data; | |
553 | ||
54ac8b60 | 554 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) |
212380e3 AC |
555 | { |
556 | if(aconf->status & CONF_EXEMPTDLINE) | |
557 | continue; | |
558 | ||
559 | notify_banned_client(client_p, aconf, D_LINED); | |
560 | } | |
561 | } | |
562 | } | |
563 | ||
564 | /* check_xlines | |
565 | * | |
566 | * inputs - | |
567 | * outputs - | |
568 | * side effects - all clients will be checked for xlines | |
569 | */ | |
570 | void | |
571 | check_xlines(void) | |
572 | { | |
573 | struct Client *client_p; | |
574 | struct ConfItem *aconf; | |
330fc5c1 | 575 | rb_dlink_node *ptr; |
637c4932 | 576 | rb_dlink_node *next_ptr; |
212380e3 | 577 | |
637c4932 | 578 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
579 | { |
580 | client_p = ptr->data; | |
581 | ||
582 | if(IsMe(client_p) || !IsPerson(client_p)) | |
583 | continue; | |
584 | ||
585 | if((aconf = find_xline(client_p->info, 1)) != NULL) | |
586 | { | |
587 | if(IsExemptKline(client_p)) | |
588 | { | |
589 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
408024fa JT |
590 | "XLINE over-ruled for %s, client is kline_exempt [%s]", |
591 | get_client_name(client_p, HIDE_IP), | |
70ea02eb | 592 | aconf->host); |
212380e3 AC |
593 | continue; |
594 | } | |
595 | ||
596 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
597 | get_client_name(client_p, HIDE_IP)); | |
598 | ||
599 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
600 | continue; | |
601 | } | |
602 | } | |
603 | } | |
604 | ||
330692a1 KB |
605 | /* resv_nick_fnc |
606 | * | |
607 | * inputs - resv, reason, time | |
608 | * outputs - NONE | |
609 | * side effects - all local clients matching resv will be FNC'd | |
610 | */ | |
611 | void | |
612 | resv_nick_fnc(const char *mask, const char *reason, int temp_time) | |
613 | { | |
614 | struct Client *client_p, *target_p; | |
615 | rb_dlink_node *ptr; | |
616 | rb_dlink_node *next_ptr; | |
617 | char *nick; | |
618 | char note[NICKLEN+10]; | |
619 | ||
620 | if (!ConfigFileEntry.resv_fnc) | |
621 | return; | |
622 | ||
623 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
624 | { | |
625 | client_p = ptr->data; | |
626 | ||
627 | if(IsMe(client_p) || !IsPerson(client_p) || IsExemptResv(client_p)) | |
628 | continue; | |
629 | ||
07d3283f KB |
630 | /* Skip users that already have UID nicks. */ |
631 | if(IsDigit(client_p->name[0])) | |
632 | continue; | |
633 | ||
330692a1 KB |
634 | if(match_esc(mask, client_p->name)) |
635 | { | |
636 | nick = client_p->id; | |
637 | ||
638 | /* Tell opers. */ | |
639 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
640 | "RESV forced nick change for %s!%s@%s to %s; nick matched [%s] (%s)", | |
641 | client_p->name, client_p->username, client_p->host, nick, mask, reason); | |
642 | ||
643 | sendto_realops_snomask(SNO_NCHANGE, L_ALL, | |
644 | "Nick change: From %s to %s [%s@%s]", | |
645 | client_p->name, nick, client_p->username, client_p->host); | |
646 | ||
647 | /* Tell the user. */ | |
648 | if (temp_time > 0) | |
649 | { | |
650 | sendto_one_notice(client_p, | |
651 | ":*** Nick %s is temporarily unavailable on this server.", | |
652 | client_p->name); | |
653 | } | |
654 | else | |
655 | { | |
656 | sendto_one_notice(client_p, | |
657 | ":*** Nick %s is no longer available on this server.", | |
658 | client_p->name); | |
659 | } | |
660 | ||
661 | /* Do all of the nick-changing gymnastics. */ | |
662 | client_p->tsinfo = rb_current_time(); | |
663 | add_history(client_p, 1); | |
664 | ||
07d3283f KB |
665 | monitor_signoff(client_p); |
666 | ||
330692a1 KB |
667 | invalidate_bancache_user(client_p); |
668 | ||
669 | sendto_common_channels_local(client_p, NOCAPS, ":%s!%s@%s NICK :%s", | |
670 | client_p->name, client_p->username, client_p->host, nick); | |
671 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
672 | use_id(client_p), nick, (long) client_p->tsinfo); | |
673 | ||
674 | del_from_client_hash(client_p->name, client_p); | |
675 | rb_strlcpy(client_p->name, nick, sizeof(client_p->name)); | |
676 | add_to_client_hash(nick, client_p); | |
677 | ||
07d3283f KB |
678 | monitor_signon(client_p); |
679 | ||
330692a1 KB |
680 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) |
681 | { | |
682 | target_p = ptr->data; | |
683 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); | |
684 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
685 | } | |
686 | ||
687 | rb_snprintf(note, sizeof(note), "Nick: %s", nick); | |
688 | rb_note(client_p->localClient->F, note); | |
689 | } | |
690 | } | |
691 | } | |
692 | ||
212380e3 AC |
693 | /* |
694 | * update_client_exit_stats | |
695 | * | |
696 | * input - pointer to client | |
697 | * output - NONE | |
698 | * side effects - | |
699 | */ | |
700 | static void | |
701 | update_client_exit_stats(struct Client *client_p) | |
702 | { | |
703 | if(IsServer(client_p)) | |
704 | { | |
705 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
706 | "Server %s split from %s", | |
707 | client_p->name, client_p->servptr->name); | |
708 | if(HasSentEob(client_p)) | |
709 | eob_count--; | |
710 | } | |
711 | else if(IsClient(client_p)) | |
712 | { | |
713 | --Count.total; | |
714 | if(IsOper(client_p)) | |
715 | --Count.oper; | |
716 | if(IsInvisible(client_p)) | |
717 | --Count.invisi; | |
718 | } | |
719 | ||
720 | if(splitchecking && !splitmode) | |
721 | check_splitmode(NULL); | |
722 | } | |
723 | ||
724 | /* | |
725 | * release_client_state | |
726 | * | |
727 | * input - pointer to client to release | |
728 | * output - NONE | |
729 | * side effects - | |
730 | */ | |
731 | static void | |
732 | release_client_state(struct Client *client_p) | |
733 | { | |
734 | if(client_p->user != NULL) | |
735 | { | |
736 | free_user(client_p->user, client_p); /* try this here */ | |
737 | } | |
738 | if(client_p->serv) | |
739 | { | |
740 | if(client_p->serv->user != NULL) | |
741 | free_user(client_p->serv->user, client_p); | |
742 | if(client_p->serv->fullcaps) | |
637c4932 VY |
743 | rb_free(client_p->serv->fullcaps); |
744 | rb_free(client_p->serv); | |
212380e3 AC |
745 | } |
746 | } | |
747 | ||
748 | /* | |
749 | * remove_client_from_list | |
750 | * inputs - point to client to remove | |
751 | * output - NONE | |
752 | * side effects - taken the code from ExitOneClient() for this | |
753 | * and placed it here. - avalon | |
754 | */ | |
755 | static void | |
756 | remove_client_from_list(struct Client *client_p) | |
757 | { | |
758 | s_assert(NULL != client_p); | |
759 | ||
760 | if(client_p == NULL) | |
761 | return; | |
762 | ||
763 | /* A client made with make_client() | |
764 | * is on the unknown_list until removed. | |
765 | * If it =does= happen to exit before its removed from that list | |
766 | * and its =not= on the global_client_list, it will core here. | |
767 | * short circuit that case now -db | |
768 | */ | |
769 | if(client_p->node.prev == NULL && client_p->node.next == NULL) | |
770 | return; | |
771 | ||
330fc5c1 | 772 | rb_dlinkDelete(&client_p->node, &global_client_list); |
212380e3 AC |
773 | |
774 | update_client_exit_stats(client_p); | |
775 | } | |
776 | ||
777 | ||
778 | /* | |
779 | * find_person - find person by (nick)name. | |
780 | * inputs - pointer to name | |
781 | * output - return client pointer | |
782 | * side effects - | |
783 | */ | |
784 | struct Client * | |
785 | find_person(const char *name) | |
786 | { | |
787 | struct Client *c2ptr; | |
788 | ||
789 | c2ptr = find_client(name); | |
790 | ||
791 | if(c2ptr && IsPerson(c2ptr)) | |
792 | return (c2ptr); | |
793 | return (NULL); | |
794 | } | |
795 | ||
796 | struct Client * | |
797 | find_named_person(const char *name) | |
798 | { | |
799 | struct Client *c2ptr; | |
800 | ||
801 | c2ptr = find_named_client(name); | |
802 | ||
803 | if(c2ptr && IsPerson(c2ptr)) | |
804 | return (c2ptr); | |
805 | return (NULL); | |
806 | } | |
807 | ||
808 | ||
809 | /* | |
810 | * find_chasing - find the client structure for a nick name (user) | |
811 | * using history mechanism if necessary. If the client is not found, | |
812 | * an error message (NO SUCH NICK) is generated. If the client was found | |
813 | * through the history, chasing will be 1 and otherwise 0. | |
814 | */ | |
815 | struct Client * | |
816 | find_chasing(struct Client *source_p, const char *user, int *chasing) | |
817 | { | |
818 | struct Client *who; | |
819 | ||
820 | if(MyClient(source_p)) | |
821 | who = find_named_person(user); | |
822 | else | |
823 | who = find_person(user); | |
824 | ||
825 | if(chasing) | |
826 | *chasing = 0; | |
827 | ||
828 | if(who || IsDigit(*user)) | |
829 | return who; | |
830 | ||
831 | if(!(who = get_history(user, (long) KILLCHASETIMELIMIT))) | |
832 | { | |
833 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
834 | form_str(ERR_NOSUCHNICK), user); | |
835 | return (NULL); | |
836 | } | |
837 | if(chasing) | |
838 | *chasing = 1; | |
839 | return who; | |
840 | } | |
841 | ||
842 | /* | |
843 | * get_client_name - Return the name of the client | |
844 | * for various tracking and | |
845 | * admin purposes. The main purpose of this function is to | |
846 | * return the "socket host" name of the client, if that | |
847 | * differs from the advertised name (other than case). | |
848 | * But, this can be used to any client structure. | |
849 | * | |
850 | * NOTE 1: | |
851 | * Watch out the allocation of "nbuf", if either source_p->name | |
852 | * or source_p->sockhost gets changed into pointers instead of | |
853 | * directly allocated within the structure... | |
854 | * | |
855 | * NOTE 2: | |
856 | * Function return either a pointer to the structure (source_p) or | |
857 | * to internal buffer (nbuf). *NEVER* use the returned pointer | |
858 | * to modify what it points!!! | |
859 | */ | |
860 | ||
861 | const char * | |
862 | get_client_name(struct Client *client, int showip) | |
863 | { | |
864 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
865 | ||
866 | s_assert(NULL != client); | |
867 | if(client == NULL) | |
868 | return NULL; | |
869 | ||
870 | if(MyConnect(client)) | |
871 | { | |
872 | if(!irccmp(client->name, client->host)) | |
873 | return client->name; | |
874 | ||
875 | if(ConfigFileEntry.hide_spoof_ips && | |
876 | showip == SHOW_IP && IsIPSpoof(client)) | |
877 | showip = MASK_IP; | |
212380e3 AC |
878 | if(IsAnyServer(client)) |
879 | showip = MASK_IP; | |
212380e3 AC |
880 | |
881 | /* And finally, let's get the host information, ip or name */ | |
882 | switch (showip) | |
883 | { | |
884 | case SHOW_IP: | |
b2f0da88 | 885 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", |
212380e3 AC |
886 | client->name, client->username, |
887 | client->sockhost); | |
888 | break; | |
889 | case MASK_IP: | |
b2f0da88 | 890 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", |
212380e3 AC |
891 | client->name, client->username); |
892 | break; | |
893 | default: | |
b2f0da88 | 894 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", |
212380e3 AC |
895 | client->name, client->username, client->host); |
896 | } | |
897 | return nbuf; | |
898 | } | |
899 | ||
900 | /* As pointed out by Adel Mezibra | |
901 | * Neph|l|m@EFnet. Was missing a return here. | |
902 | */ | |
903 | return client->name; | |
904 | } | |
212380e3 AC |
905 | |
906 | /* log_client_name() | |
907 | * | |
908 | * This version is the same as get_client_name, but doesnt contain the | |
909 | * code that will hide IPs always. This should be used for logfiles. | |
910 | */ | |
911 | const char * | |
912 | log_client_name(struct Client *target_p, int showip) | |
913 | { | |
914 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
915 | ||
916 | if(target_p == NULL) | |
917 | return NULL; | |
918 | ||
919 | if(MyConnect(target_p)) | |
920 | { | |
921 | if(irccmp(target_p->name, target_p->host) == 0) | |
922 | return target_p->name; | |
923 | ||
924 | switch (showip) | |
925 | { | |
926 | case SHOW_IP: | |
b2f0da88 | 927 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, |
212380e3 AC |
928 | target_p->username, target_p->sockhost); |
929 | break; | |
930 | ||
212380e3 | 931 | default: |
b2f0da88 | 932 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, |
212380e3 AC |
933 | target_p->username, target_p->host); |
934 | } | |
935 | ||
936 | return nbuf; | |
937 | } | |
938 | ||
939 | return target_p->name; | |
940 | } | |
941 | ||
942 | /* is_remote_connect - Returns whether a server was /connect'ed by a remote | |
943 | * oper (send notices netwide) */ | |
944 | int | |
945 | is_remote_connect(struct Client *client_p) | |
946 | { | |
947 | struct Client *oper; | |
948 | ||
949 | if (client_p->serv == NULL) | |
950 | return FALSE; | |
951 | oper = find_named_person(client_p->serv->by); | |
952 | return oper != NULL && IsOper(oper) && !MyConnect(oper); | |
953 | } | |
954 | ||
955 | static void | |
956 | free_exited_clients(void *unused) | |
957 | { | |
330fc5c1 | 958 | rb_dlink_node *ptr, *next; |
212380e3 AC |
959 | struct Client *target_p; |
960 | ||
5cefa1d6 | 961 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_list.head) |
212380e3 AC |
962 | { |
963 | target_p = ptr->data; | |
964 | ||
965 | #ifdef DEBUG_EXITED_CLIENTS | |
966 | { | |
967 | struct abort_client *abt; | |
330fc5c1 | 968 | rb_dlink_node *aptr; |
212380e3 AC |
969 | int found = 0; |
970 | ||
5cefa1d6 | 971 | RB_DLINK_FOREACH(aptr, abort_list.head) |
212380e3 AC |
972 | { |
973 | abt = aptr->data; | |
974 | if(abt->client == target_p) | |
975 | { | |
976 | s_assert(0); | |
977 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
978 | "On abort_list: %s stat: %u flags: %u/%u handler: %c", | |
979 | target_p->name, (unsigned int) target_p->status, | |
980 | target_p->flags, target_p->flags2, target_p->handler); | |
981 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 982 | "Please report this to the charybdis developers!"); |
212380e3 AC |
983 | found++; |
984 | } | |
985 | } | |
986 | ||
987 | if(found) | |
988 | { | |
330fc5c1 | 989 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
990 | continue; |
991 | } | |
992 | } | |
993 | #endif | |
994 | ||
995 | if(ptr->data == NULL) | |
996 | { | |
997 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
998 | "Warning: null client on dead_list!"); | |
330fc5c1 | 999 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1000 | continue; |
1001 | } | |
1002 | release_client_state(target_p); | |
1003 | free_client(target_p); | |
330fc5c1 | 1004 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1005 | } |
1006 | ||
1007 | #ifdef DEBUG_EXITED_CLIENTS | |
5cefa1d6 | 1008 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_remote_list.head) |
212380e3 AC |
1009 | { |
1010 | target_p = ptr->data; | |
1011 | ||
1012 | if(ptr->data == NULL) | |
1013 | { | |
1014 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1015 | "Warning: null client on dead_list!"); | |
330fc5c1 | 1016 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1017 | continue; |
1018 | } | |
1019 | release_client_state(target_p); | |
1020 | free_client(target_p); | |
330fc5c1 | 1021 | rb_dlinkDestroy(ptr, &dead_remote_list); |
212380e3 AC |
1022 | } |
1023 | #endif | |
1024 | ||
1025 | } | |
1026 | ||
212380e3 AC |
1027 | /* |
1028 | ** Remove all clients that depend on source_p; assumes all (S)QUITs have | |
1029 | ** already been sent. we make sure to exit a server's dependent clients | |
1030 | ** and servers before the server itself; exit_one_client takes care of | |
1031 | ** actually removing things off llists. tweaked from +CSr31 -orabidoo | |
1032 | */ | |
1033 | /* | |
1034 | * added sanity test code.... source_p->serv might be NULL... | |
1035 | */ | |
1036 | static void | |
1037 | recurse_remove_clients(struct Client *source_p, const char *comment) | |
1038 | { | |
1039 | struct Client *target_p; | |
330fc5c1 | 1040 | rb_dlink_node *ptr, *ptr_next; |
212380e3 AC |
1041 | |
1042 | if(IsMe(source_p)) | |
1043 | return; | |
1044 | ||
1045 | if(source_p->serv == NULL) /* oooops. uh this is actually a major bug */ | |
1046 | return; | |
1047 | ||
1048 | /* this is very ugly, but it saves cpu :P */ | |
1049 | if(ConfigFileEntry.nick_delay > 0) | |
1050 | { | |
5cefa1d6 | 1051 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) |
212380e3 AC |
1052 | { |
1053 | target_p = ptr->data; | |
1054 | target_p->flags |= FLAGS_KILLED; | |
1055 | add_nd_entry(target_p->name); | |
1056 | ||
1057 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1058 | exit_remote_client(NULL, target_p, &me, comment); | |
1059 | } | |
1060 | } | |
1061 | else | |
1062 | { | |
5cefa1d6 | 1063 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) |
212380e3 AC |
1064 | { |
1065 | target_p = ptr->data; | |
1066 | target_p->flags |= FLAGS_KILLED; | |
1067 | ||
1068 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1069 | exit_remote_client(NULL, target_p, &me, comment); | |
1070 | } | |
1071 | } | |
1072 | ||
5cefa1d6 | 1073 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) |
212380e3 AC |
1074 | { |
1075 | target_p = ptr->data; | |
1076 | recurse_remove_clients(target_p, comment); | |
1077 | qs_server(NULL, target_p, &me, comment); | |
1078 | } | |
1079 | } | |
1080 | ||
1081 | /* | |
1082 | ** Remove *everything* that depends on source_p, from all lists, and sending | |
856df9a3 | 1083 | ** all necessary SQUITs. source_p itself is still on the lists, |
212380e3 AC |
1084 | ** and its SQUITs have been sent except for the upstream one -orabidoo |
1085 | */ | |
1086 | static void | |
1087 | remove_dependents(struct Client *client_p, | |
1088 | struct Client *source_p, | |
1089 | struct Client *from, const char *comment, const char *comment1) | |
1090 | { | |
1091 | struct Client *to; | |
330fc5c1 | 1092 | rb_dlink_node *ptr, *next; |
212380e3 | 1093 | |
5cefa1d6 | 1094 | RB_DLINK_FOREACH_SAFE(ptr, next, serv_list.head) |
212380e3 AC |
1095 | { |
1096 | to = ptr->data; | |
1097 | ||
856df9a3 | 1098 | if(IsMe(to) || to == source_p->from || to == client_p) |
212380e3 AC |
1099 | continue; |
1100 | ||
856df9a3 | 1101 | sendto_one(to, "SQUIT %s :%s", get_id(source_p, to), comment); |
212380e3 AC |
1102 | } |
1103 | ||
1104 | recurse_remove_clients(source_p, comment1); | |
1105 | } | |
1106 | ||
1107 | void | |
1108 | exit_aborted_clients(void *unused) | |
1109 | { | |
1110 | struct abort_client *abt; | |
330fc5c1 | 1111 | rb_dlink_node *ptr, *next; |
5cefa1d6 | 1112 | RB_DLINK_FOREACH_SAFE(ptr, next, abort_list.head) |
212380e3 AC |
1113 | { |
1114 | abt = ptr->data; | |
1115 | ||
1116 | #ifdef DEBUG_EXITED_CLIENTS | |
1117 | { | |
330fc5c1 | 1118 | if(rb_dlinkFind(abt->client, &dead_list)) |
212380e3 AC |
1119 | { |
1120 | s_assert(0); | |
1121 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1122 | "On dead_list: %s stat: %u flags: %u/%u handler: %c", | |
1123 | abt->client->name, (unsigned int) abt->client->status, | |
1124 | abt->client->flags, abt->client->flags2, abt->client->handler); | |
1125 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1126 | "Please report this to the charybdis developers!"); |
212380e3 AC |
1127 | continue; |
1128 | } | |
1129 | } | |
1130 | #endif | |
1131 | ||
1132 | s_assert(*((unsigned long*)abt->client) != 0xdeadbeef); /* This is lame but its a debug thing */ | |
330fc5c1 | 1133 | rb_dlinkDelete(ptr, &abort_list); |
212380e3 AC |
1134 | |
1135 | if(IsAnyServer(abt->client)) | |
1136 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1137 | "Closing link to %s: %s", | |
b3ebc7ab | 1138 | abt->client->name, abt->notice); |
212380e3 AC |
1139 | |
1140 | /* its no longer on abort list - we *must* remove | |
1141 | * FLAGS_CLOSING otherwise exit_client() will not run --fl | |
1142 | */ | |
1143 | abt->client->flags &= ~FLAGS_CLOSING; | |
1144 | exit_client(abt->client, abt->client, &me, abt->notice); | |
637c4932 | 1145 | rb_free(abt); |
212380e3 AC |
1146 | } |
1147 | } | |
1148 | ||
1149 | ||
1150 | /* | |
1151 | * dead_link - Adds client to a list of clients that need an exit_client() | |
1152 | * | |
1153 | */ | |
1154 | void | |
cef7a7bc | 1155 | dead_link(struct Client *client_p, int sendqex) |
212380e3 AC |
1156 | { |
1157 | struct abort_client *abt; | |
1158 | ||
1159 | s_assert(!IsMe(client_p)); | |
1160 | if(IsDead(client_p) || IsClosing(client_p) || IsMe(client_p)) | |
1161 | return; | |
1162 | ||
eddc2ab6 | 1163 | abt = (struct abort_client *) rb_malloc(sizeof(struct abort_client)); |
212380e3 | 1164 | |
cef7a7bc | 1165 | if(sendqex) |
f427c8b0 | 1166 | rb_strlcpy(abt->notice, "Max SendQ exceeded", sizeof(abt->notice)); |
212380e3 | 1167 | else |
b2f0da88 | 1168 | rb_snprintf(abt->notice, sizeof(abt->notice), "Write error: %s", strerror(errno)); |
212380e3 AC |
1169 | |
1170 | abt->client = client_p; | |
1171 | SetIOError(client_p); | |
1172 | SetDead(client_p); | |
1173 | SetClosing(client_p); | |
330fc5c1 | 1174 | rb_dlinkAdd(abt, &abt->node, &abort_list); |
212380e3 AC |
1175 | } |
1176 | ||
1177 | ||
1178 | /* This does the remove of the user from channels..local or remote */ | |
1179 | static inline void | |
1180 | exit_generic_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1181 | const char *comment) | |
1182 | { | |
637c4932 | 1183 | rb_dlink_node *ptr, *next_ptr; |
212380e3 AC |
1184 | |
1185 | if(IsOper(source_p)) | |
330fc5c1 | 1186 | rb_dlinkFindDestroy(source_p, &oper_list); |
212380e3 | 1187 | |
7a948bda | 1188 | sendto_common_channels_local(source_p, NOCAPS, ":%s!%s@%s QUIT :%s", |
212380e3 AC |
1189 | source_p->name, |
1190 | source_p->username, source_p->host, comment); | |
1191 | ||
1192 | remove_user_from_channels(source_p); | |
1193 | ||
1194 | /* Should not be in any channels now */ | |
1195 | s_assert(source_p->user->channel.head == NULL); | |
1196 | ||
1197 | /* Clean up invitefield */ | |
637c4932 | 1198 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->user->invited.head) |
212380e3 AC |
1199 | { |
1200 | del_invite(ptr->data, source_p); | |
1201 | } | |
1202 | ||
1203 | /* Clean up allow lists */ | |
1204 | del_all_accepts(source_p); | |
1205 | ||
1206 | add_history(source_p, 0); | |
1207 | off_history(source_p); | |
1208 | ||
1209 | monitor_signoff(source_p); | |
1210 | ||
1211 | if(has_id(source_p)) | |
1212 | del_from_id_hash(source_p->id, source_p); | |
1213 | ||
1214 | del_from_hostname_hash(source_p->orighost, source_p); | |
1215 | del_from_client_hash(source_p->name, source_p); | |
1216 | remove_client_from_list(source_p); | |
1217 | } | |
1218 | ||
1219 | /* | |
1220 | * Assumes IsPerson(source_p) && !MyConnect(source_p) | |
1221 | */ | |
1222 | ||
1223 | static int | |
1224 | exit_remote_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1225 | const char *comment) | |
1226 | { | |
1227 | exit_generic_client(client_p, source_p, from, comment); | |
1228 | ||
1229 | if(source_p->servptr && source_p->servptr->serv) | |
1230 | { | |
330fc5c1 | 1231 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users); |
212380e3 AC |
1232 | } |
1233 | ||
1234 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1235 | { | |
1236 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1237 | ":%s QUIT :%s", use_id(source_p), comment); | |
212380e3 AC |
1238 | } |
1239 | ||
1240 | SetDead(source_p); | |
1241 | #ifdef DEBUG_EXITED_CLIENTS | |
330fc5c1 | 1242 | rb_dlinkAddAlloc(source_p, &dead_remote_list); |
212380e3 | 1243 | #else |
330fc5c1 | 1244 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1245 | #endif |
1246 | return(CLIENT_EXITED); | |
1247 | } | |
1248 | ||
1249 | /* | |
1250 | * This assumes IsUnknown(source_p) == TRUE and MyConnect(source_p) == TRUE | |
1251 | */ | |
1252 | ||
1253 | static int | |
1254 | exit_unknown_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1255 | const char *comment) | |
1256 | { | |
1257 | delete_auth_queries(source_p); | |
7fc09bc4 | 1258 | abort_blacklist_queries(source_p); |
abe5dd20 JT |
1259 | if (source_p->localClient->dnsquery) |
1260 | { | |
1261 | delete_resolver_queries(source_p->localClient->dnsquery); | |
1262 | rb_free(source_p->localClient->dnsquery); | |
1263 | } | |
330fc5c1 | 1264 | rb_dlinkDelete(&source_p->localClient->tnode, &unknown_list); |
212380e3 AC |
1265 | |
1266 | if(!IsIOError(source_p)) | |
dd12a19c JT |
1267 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", |
1268 | source_p->user != NULL ? source_p->host : "127.0.0.1", | |
1269 | comment); | |
212380e3 AC |
1270 | |
1271 | close_connection(source_p); | |
1272 | ||
1273 | if(has_id(source_p)) | |
1274 | del_from_id_hash(source_p->id, source_p); | |
1275 | ||
1276 | del_from_hostname_hash(source_p->host, source_p); | |
1277 | del_from_client_hash(source_p->name, source_p); | |
1278 | remove_client_from_list(source_p); | |
212380e3 | 1279 | SetDead(source_p); |
330fc5c1 | 1280 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1281 | |
1282 | /* Note that we don't need to add unknowns to the dead_list */ | |
1283 | return(CLIENT_EXITED); | |
1284 | } | |
1285 | ||
1286 | static int | |
1287 | exit_remote_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1288 | const char *comment) | |
1289 | { | |
1290 | static char comment1[(HOSTLEN*2)+2]; | |
1291 | static char newcomment[BUFSIZE]; | |
1292 | struct Client *target_p; | |
1293 | ||
1294 | if(ConfigServerHide.flatten_links) | |
1295 | strcpy(comment1, "*.net *.split"); | |
1296 | else | |
1297 | { | |
66c8fdd2 | 1298 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1299 | strcat(comment1, " "); |
1300 | strcat(comment1, source_p->name); | |
1301 | } | |
1302 | if (IsPerson(from)) | |
b2f0da88 | 1303 | rb_snprintf(newcomment, sizeof(newcomment), "by %s: %s", |
212380e3 AC |
1304 | from->name, comment); |
1305 | ||
1306 | if(source_p->serv != NULL) | |
1307 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1308 | ||
1309 | if(source_p->servptr && source_p->servptr->serv) | |
330fc5c1 | 1310 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1311 | else |
1312 | s_assert(0); | |
1313 | ||
330fc5c1 | 1314 | rb_dlinkFindDestroy(source_p, &global_serv_list); |
212380e3 AC |
1315 | target_p = source_p->from; |
1316 | ||
1317 | if(target_p != NULL && IsServer(target_p) && target_p != client_p && | |
1318 | !IsMe(target_p) && (source_p->flags & FLAGS_KILLED) == 0) | |
1319 | { | |
1320 | sendto_one(target_p, ":%s SQUIT %s :%s", | |
1321 | get_id(from, target_p), get_id(source_p, target_p), | |
1322 | comment); | |
1323 | } | |
1324 | ||
1325 | if(has_id(source_p)) | |
1326 | del_from_id_hash(source_p->id, source_p); | |
1327 | ||
1328 | del_from_client_hash(source_p->name, source_p); | |
1329 | remove_client_from_list(source_p); | |
994544c2 | 1330 | scache_split(source_p->serv->nameinfo); |
212380e3 AC |
1331 | |
1332 | SetDead(source_p); | |
1333 | #ifdef DEBUG_EXITED_CLIENTS | |
330fc5c1 | 1334 | rb_dlinkAddAlloc(source_p, &dead_remote_list); |
212380e3 | 1335 | #else |
330fc5c1 | 1336 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1337 | #endif |
1338 | return 0; | |
1339 | } | |
1340 | ||
1341 | static int | |
1342 | qs_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1343 | const char *comment) | |
1344 | { | |
212380e3 | 1345 | if(source_p->servptr && source_p->servptr->serv) |
330fc5c1 | 1346 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1347 | else |
1348 | s_assert(0); | |
1349 | ||
330fc5c1 | 1350 | rb_dlinkFindDestroy(source_p, &global_serv_list); |
212380e3 AC |
1351 | |
1352 | if(has_id(source_p)) | |
1353 | del_from_id_hash(source_p->id, source_p); | |
1354 | ||
1355 | del_from_client_hash(source_p->name, source_p); | |
1356 | remove_client_from_list(source_p); | |
19807b5b | 1357 | scache_split(source_p->serv->nameinfo); |
212380e3 AC |
1358 | |
1359 | SetDead(source_p); | |
330fc5c1 | 1360 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1361 | return 0; |
1362 | } | |
1363 | ||
1364 | static int | |
1365 | exit_local_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1366 | const char *comment) | |
1367 | { | |
1368 | static char comment1[(HOSTLEN*2)+2]; | |
1369 | static char newcomment[BUFSIZE]; | |
1370 | unsigned int sendk, recvk; | |
1371 | ||
330fc5c1 AC |
1372 | rb_dlinkDelete(&source_p->localClient->tnode, &serv_list); |
1373 | rb_dlinkFindDestroy(source_p, &global_serv_list); | |
212380e3 | 1374 | |
212380e3 AC |
1375 | sendk = source_p->localClient->sendK; |
1376 | recvk = source_p->localClient->receiveK; | |
1377 | ||
1378 | /* Always show source here, so the server notices show | |
1379 | * which side initiated the split -- jilles | |
1380 | */ | |
b2f0da88 | 1381 | rb_snprintf(newcomment, sizeof(newcomment), "by %s: %s", |
212380e3 AC |
1382 | from == source_p ? me.name : from->name, comment); |
1383 | if (!IsIOError(source_p)) | |
1384 | sendto_one(source_p, "SQUIT %s :%s", use_id(source_p), | |
1385 | newcomment); | |
1386 | if(client_p != NULL && source_p != client_p && !IsIOError(source_p)) | |
1387 | { | |
1388 | sendto_one(source_p, "ERROR :Closing Link: 127.0.0.1 %s (%s)", | |
1389 | source_p->name, comment); | |
1390 | } | |
1391 | ||
212380e3 | 1392 | if(source_p->servptr && source_p->servptr->serv) |
330fc5c1 | 1393 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1394 | else |
1395 | s_assert(0); | |
1396 | ||
1397 | ||
1398 | close_connection(source_p); | |
1399 | ||
1400 | if(ConfigServerHide.flatten_links) | |
1401 | strcpy(comment1, "*.net *.split"); | |
1402 | else | |
1403 | { | |
66c8fdd2 | 1404 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1405 | strcat(comment1, " "); |
1406 | strcat(comment1, source_p->name); | |
1407 | } | |
1408 | ||
1409 | if(source_p->serv != NULL) | |
1410 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1411 | ||
1412 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s was connected" | |
1413 | " for %ld seconds. %d/%d sendK/recvK.", | |
adc6cc42 | 1414 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); |
212380e3 AC |
1415 | |
1416 | ilog(L_SERVER, "%s was connected for %ld seconds. %d/%d sendK/recvK.", | |
adc6cc42 | 1417 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); |
212380e3 AC |
1418 | |
1419 | if(has_id(source_p)) | |
1420 | del_from_id_hash(source_p->id, source_p); | |
1421 | ||
1422 | del_from_client_hash(source_p->name, source_p); | |
1423 | remove_client_from_list(source_p); | |
994544c2 | 1424 | scache_split(source_p->serv->nameinfo); |
212380e3 AC |
1425 | |
1426 | SetDead(source_p); | |
330fc5c1 | 1427 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1428 | return 0; |
1429 | } | |
1430 | ||
1431 | ||
1432 | /* | |
1433 | * This assumes IsPerson(source_p) == TRUE && MyConnect(source_p) == TRUE | |
1434 | */ | |
1435 | ||
1436 | static int | |
1437 | exit_local_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1438 | const char *comment) | |
1439 | { | |
1440 | unsigned long on_for; | |
08d75d97 | 1441 | char tbuf[26]; |
212380e3 AC |
1442 | |
1443 | exit_generic_client(client_p, source_p, from, comment); | |
1444 | clear_monitor(source_p); | |
1445 | ||
1446 | s_assert(IsPerson(source_p)); | |
330fc5c1 AC |
1447 | rb_dlinkDelete(&source_p->localClient->tnode, &lclient_list); |
1448 | rb_dlinkDelete(&source_p->lnode, &me.serv->users); | |
212380e3 AC |
1449 | |
1450 | if(IsOper(source_p)) | |
330fc5c1 | 1451 | rb_dlinkFindDestroy(source_p, &local_oper_list); |
212380e3 AC |
1452 | |
1453 | sendto_realops_snomask(SNO_CCONN, L_ALL, | |
1454 | "Client exiting: %s (%s@%s) [%s] [%s]", | |
1455 | source_p->name, | |
1456 | source_p->username, source_p->host, comment, | |
1457 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255"); | |
1458 | ||
1459 | sendto_realops_snomask(SNO_CCONNEXT, L_ALL, | |
1460 | "CLIEXIT %s %s %s %s 0 %s", | |
1461 | source_p->name, source_p->username, source_p->host, | |
1462 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255", | |
1463 | comment); | |
1464 | ||
e3354945 | 1465 | on_for = rb_current_time() - source_p->localClient->firsttime; |
212380e3 | 1466 | |
9641f156 | 1467 | ilog(L_USER, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d", |
08d75d97 | 1468 | rb_ctime(rb_current_time(), tbuf, sizeof(tbuf)), on_for / 3600, |
212380e3 AC |
1469 | (on_for % 3600) / 60, on_for % 60, |
1470 | source_p->name, source_p->username, source_p->host, | |
9641f156 | 1471 | source_p->sockhost, |
212380e3 AC |
1472 | source_p->localClient->sendK, source_p->localClient->receiveK); |
1473 | ||
1474 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", source_p->host, comment); | |
1475 | close_connection(source_p); | |
1476 | ||
1477 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1478 | { | |
1479 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1480 | ":%s QUIT :%s", use_id(source_p), comment); | |
212380e3 AC |
1481 | } |
1482 | ||
1483 | SetDead(source_p); | |
330fc5c1 | 1484 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1485 | return(CLIENT_EXITED); |
1486 | } | |
1487 | ||
1488 | ||
1489 | /* | |
1490 | ** exit_client - This is old "m_bye". Name changed, because this is not a | |
1491 | ** protocol function, but a general server utility function. | |
1492 | ** | |
1493 | ** This function exits a client of *any* type (user, server, etc) | |
1494 | ** from this server. Also, this generates all necessary prototol | |
1495 | ** messages that this exit may cause. | |
1496 | ** | |
1497 | ** 1) If the client is a local client, then this implicitly | |
1498 | ** exits all other clients depending on this connection (e.g. | |
1499 | ** remote clients having 'from'-field that points to this. | |
1500 | ** | |
1501 | ** 2) If the client is a remote client, then only this is exited. | |
1502 | ** | |
1503 | ** For convenience, this function returns a suitable value for | |
1504 | ** m_function return value: | |
1505 | ** | |
1506 | ** CLIENT_EXITED if (client_p == source_p) | |
1507 | ** 0 if (client_p != source_p) | |
1508 | */ | |
1509 | int | |
1510 | exit_client(struct Client *client_p, /* The local client originating the | |
1511 | * exit or NULL, if this exit is | |
1512 | * generated by this server for | |
1513 | * internal reasons. | |
1514 | * This will not get any of the | |
1515 | * generated messages. */ | |
1516 | struct Client *source_p, /* Client exiting */ | |
1517 | struct Client *from, /* Client firing off this Exit, | |
1518 | * never NULL! */ | |
1519 | const char *comment /* Reason for the exit */ | |
1520 | ) | |
1521 | { | |
1522 | hook_data_client_exit hdata; | |
1523 | if(IsClosing(source_p)) | |
1524 | return -1; | |
1525 | ||
1526 | /* note, this HAS to be here, when we exit a client we attempt to | |
1527 | * send them data, if this generates a write error we must *not* add | |
1528 | * them to the abort list --fl | |
1529 | */ | |
1530 | SetClosing(source_p); | |
1531 | ||
1532 | hdata.local_link = client_p; | |
1533 | hdata.target = source_p; | |
1534 | hdata.from = from; | |
1535 | hdata.comment = comment; | |
1536 | call_hook(h_client_exit, &hdata); | |
1537 | ||
1538 | if(MyConnect(source_p)) | |
1539 | { | |
1540 | /* Local clients of various types */ | |
1541 | if(IsPerson(source_p)) | |
1542 | return exit_local_client(client_p, source_p, from, comment); | |
1543 | else if(IsServer(source_p)) | |
1544 | return exit_local_server(client_p, source_p, from, comment); | |
1545 | /* IsUnknown || IsConnecting || IsHandShake */ | |
1546 | else if(!IsReject(source_p)) | |
1547 | return exit_unknown_client(client_p, source_p, from, comment); | |
1548 | } | |
1549 | else | |
1550 | { | |
1551 | /* Remotes */ | |
1552 | if(IsPerson(source_p)) | |
1553 | return exit_remote_client(client_p, source_p, from, comment); | |
1554 | else if(IsServer(source_p)) | |
1555 | return exit_remote_server(client_p, source_p, from, comment); | |
1556 | } | |
1557 | ||
1558 | return -1; | |
1559 | } | |
1560 | ||
1561 | /* | |
1562 | * Count up local client memory | |
1563 | */ | |
1564 | ||
1565 | /* XXX one common Client list now */ | |
1566 | void | |
1567 | count_local_client_memory(size_t * count, size_t * local_client_memory_used) | |
1568 | { | |
1087485c JT |
1569 | size_t lusage; |
1570 | rb_bh_usage(lclient_heap, count, NULL, &lusage, NULL); | |
adc6cc42 | 1571 | *local_client_memory_used = lusage + (*count * (sizeof(void *) + sizeof(struct Client))); |
212380e3 AC |
1572 | } |
1573 | ||
1574 | /* | |
1575 | * Count up remote client memory | |
1576 | */ | |
1577 | void | |
1578 | count_remote_client_memory(size_t * count, size_t * remote_client_memory_used) | |
1579 | { | |
1087485c JT |
1580 | size_t lcount, rcount; |
1581 | rb_bh_usage(lclient_heap, &lcount, NULL, NULL, NULL); | |
1582 | rb_bh_usage(client_heap, &rcount, NULL, NULL, NULL); | |
1583 | *count = rcount - lcount; | |
adc6cc42 | 1584 | *remote_client_memory_used = *count * (sizeof(void *) + sizeof(struct Client)); |
212380e3 AC |
1585 | } |
1586 | ||
1587 | ||
1588 | /* | |
1589 | * accept processing, this adds a form of "caller ID" to ircd | |
1590 | * | |
1591 | * If a client puts themselves into "caller ID only" mode, | |
1592 | * only clients that match a client pointer they have put on | |
1593 | * the accept list will be allowed to message them. | |
1594 | * | |
1595 | * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ] | |
1596 | * | |
1597 | * [target.allow_list] -> [ source1 ] -> [source2 ] | |
1598 | * | |
1599 | * i.e. a target will have a link list of source pointers it will allow | |
1600 | * each source client then has a back pointer pointing back | |
1601 | * to the client that has it on its accept list. | |
1602 | * This allows for exit_one_client to remove these now bogus entries | |
1603 | * from any client having an accept on them. | |
1604 | */ | |
1605 | /* | |
1606 | * del_all_accepts | |
1607 | * | |
1608 | * inputs - pointer to exiting client | |
1609 | * output - NONE | |
1610 | * side effects - Walk through given clients allow_list and on_allow_list | |
1611 | * remove all references to this client | |
1612 | */ | |
1613 | void | |
1614 | del_all_accepts(struct Client *client_p) | |
1615 | { | |
330fc5c1 | 1616 | rb_dlink_node *ptr; |
637c4932 | 1617 | rb_dlink_node *next_ptr; |
212380e3 AC |
1618 | struct Client *target_p; |
1619 | ||
1620 | if(MyClient(client_p) && client_p->localClient->allow_list.head) | |
1621 | { | |
1622 | /* clear this clients accept list, and remove them from | |
1623 | * everyones on_accept_list | |
1624 | */ | |
637c4932 | 1625 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->allow_list.head) |
212380e3 AC |
1626 | { |
1627 | target_p = ptr->data; | |
330fc5c1 AC |
1628 | rb_dlinkFindDestroy(client_p, &target_p->on_allow_list); |
1629 | rb_dlinkDestroy(ptr, &client_p->localClient->allow_list); | |
212380e3 AC |
1630 | } |
1631 | } | |
1632 | ||
1633 | /* remove this client from everyones accept list */ | |
637c4932 | 1634 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) |
212380e3 AC |
1635 | { |
1636 | target_p = ptr->data; | |
330fc5c1 AC |
1637 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); |
1638 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
212380e3 AC |
1639 | } |
1640 | } | |
1641 | ||
1642 | /* | |
521f9d63 KB |
1643 | * show_ip() - asks if the true IP should be shown when source is |
1644 | * asking for info about target | |
212380e3 AC |
1645 | * |
1646 | * Inputs - source_p who is asking | |
1647 | * - target_p who do we want the info on | |
521f9d63 | 1648 | * Output - returns 1 if clear IP can be shown, otherwise 0 |
212380e3 AC |
1649 | * Side Effects - none |
1650 | */ | |
1651 | ||
1652 | int | |
1653 | show_ip(struct Client *source_p, struct Client *target_p) | |
1654 | { | |
1655 | if(IsAnyServer(target_p)) | |
1656 | { | |
212380e3 AC |
1657 | return 0; |
1658 | } | |
1659 | else if(IsIPSpoof(target_p)) | |
1660 | { | |
1661 | /* source == NULL indicates message is being sent | |
1662 | * to local opers. | |
1663 | */ | |
1664 | if(!ConfigFileEntry.hide_spoof_ips && | |
1665 | (source_p == NULL || MyOper(source_p))) | |
1666 | return 1; | |
1667 | return 0; | |
1668 | } | |
1669 | else if(IsDynSpoof(target_p) && (source_p != NULL && !IsOper(source_p))) | |
1670 | return 0; | |
1671 | else | |
1672 | return 1; | |
1673 | } | |
1674 | ||
1675 | int | |
1676 | show_ip_conf(struct ConfItem *aconf, struct Client *source_p) | |
1677 | { | |
1678 | if(IsConfDoSpoofIp(aconf)) | |
1679 | { | |
1680 | if(!ConfigFileEntry.hide_spoof_ips && MyOper(source_p)) | |
1681 | return 1; | |
1682 | ||
1683 | return 0; | |
1684 | } | |
1685 | else | |
1686 | return 1; | |
1687 | } | |
1688 | ||
364e59f8 JT |
1689 | int |
1690 | show_ip_whowas(struct Whowas *whowas, struct Client *source_p) | |
1691 | { | |
1692 | if(whowas->flags & WHOWAS_IP_SPOOFING) | |
1693 | if(ConfigFileEntry.hide_spoof_ips || !MyOper(source_p)) | |
1694 | return 0; | |
1695 | if(whowas->flags & WHOWAS_DYNSPOOF) | |
1696 | if(!IsOper(source_p)) | |
1697 | return 0; | |
1698 | return 1; | |
1699 | } | |
1700 | ||
212380e3 AC |
1701 | /* |
1702 | * make_user | |
1703 | * | |
1704 | * inputs - pointer to client struct | |
1705 | * output - pointer to struct User | |
1706 | * side effects - add's an User information block to a client | |
1707 | * if it was not previously allocated. | |
1708 | */ | |
1709 | struct User * | |
1710 | make_user(struct Client *client_p) | |
1711 | { | |
1712 | struct User *user; | |
1713 | ||
1714 | user = client_p->user; | |
1715 | if(!user) | |
1716 | { | |
398b6a73 | 1717 | user = (struct User *) rb_bh_alloc(user_heap); |
212380e3 AC |
1718 | user->refcnt = 1; |
1719 | client_p->user = user; | |
1720 | } | |
1721 | return user; | |
1722 | } | |
1723 | ||
1724 | /* | |
1725 | * make_server | |
1726 | * | |
1727 | * inputs - pointer to client struct | |
1728 | * output - pointer to server_t | |
1729 | * side effects - add's an Server information block to a client | |
1730 | * if it was not previously allocated. | |
1731 | */ | |
8f103562 | 1732 | struct Server * |
212380e3 AC |
1733 | make_server(struct Client *client_p) |
1734 | { | |
8f103562 | 1735 | struct Server *serv = client_p->serv; |
212380e3 AC |
1736 | |
1737 | if(!serv) | |
1738 | { | |
8f103562 | 1739 | serv = (struct Server *) rb_malloc(sizeof(struct Server)); |
212380e3 AC |
1740 | client_p->serv = serv; |
1741 | } | |
1742 | return client_p->serv; | |
1743 | } | |
1744 | ||
1745 | /* | |
1746 | * free_user | |
1747 | * | |
1748 | * inputs - pointer to user struct | |
1749 | * - pointer to client struct | |
1750 | * output - none | |
1751 | * side effects - Decrease user reference count by one and release block, | |
1752 | * if count reaches 0 | |
1753 | */ | |
1754 | void | |
1755 | free_user(struct User *user, struct Client *client_p) | |
1756 | { | |
c127b45b SB |
1757 | free_away(client_p); |
1758 | ||
212380e3 AC |
1759 | if(--user->refcnt <= 0) |
1760 | { | |
c127b45b SB |
1761 | if(user->away) |
1762 | rb_free((char *) user->away); | |
212380e3 AC |
1763 | /* |
1764 | * sanity check | |
1765 | */ | |
1766 | if(user->refcnt < 0 || user->invited.head || user->channel.head) | |
1767 | { | |
1768 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1769 | "* %#lx user (%s!%s@%s) %#lx %#lx %#lx %lu %d *", | |
1770 | (unsigned long) client_p, | |
1771 | client_p ? client_p-> | |
1772 | name : "<noname>", | |
1773 | client_p->username, | |
1774 | client_p->host, | |
1775 | (unsigned long) user, | |
1776 | (unsigned long) user->invited.head, | |
1777 | (unsigned long) user->channel.head, | |
330fc5c1 | 1778 | rb_dlink_list_length(&user->channel), |
212380e3 AC |
1779 | user->refcnt); |
1780 | s_assert(!user->refcnt); | |
1781 | s_assert(!user->invited.head); | |
1782 | s_assert(!user->channel.head); | |
1783 | } | |
1784 | ||
398b6a73 | 1785 | rb_bh_free(user_heap, user); |
212380e3 AC |
1786 | } |
1787 | } | |
1788 | ||
e581ea8e | 1789 | void |
c127b45b | 1790 | allocate_away(struct Client *client_p) |
e581ea8e | 1791 | { |
c127b45b SB |
1792 | if(client_p->user->away == NULL) |
1793 | client_p->user->away = rb_bh_alloc(away_heap); | |
e581ea8e AC |
1794 | } |
1795 | ||
c127b45b | 1796 | |
e581ea8e | 1797 | void |
c127b45b | 1798 | free_away(struct Client *client_p) |
e581ea8e | 1799 | { |
c127b45b SB |
1800 | if(client_p->user != NULL && client_p->user->away != NULL) { |
1801 | rb_bh_free(away_heap, client_p->user->away); | |
1802 | client_p->user->away = NULL; | |
e581ea8e AC |
1803 | } |
1804 | } | |
1805 | ||
212380e3 AC |
1806 | void |
1807 | init_uid(void) | |
1808 | { | |
1809 | int i; | |
1810 | ||
1811 | for(i = 0; i < 3; i++) | |
1812 | current_uid[i] = me.id[i]; | |
1813 | ||
1814 | for(i = 3; i < 9; i++) | |
1815 | current_uid[i] = 'A'; | |
1816 | ||
1817 | current_uid[9] = '\0'; | |
1818 | } | |
1819 | ||
1820 | ||
1821 | char * | |
1822 | generate_uid(void) | |
1823 | { | |
1824 | int i; | |
1825 | ||
1826 | for(i = 8; i > 3; i--) | |
1827 | { | |
1828 | if(current_uid[i] == 'Z') | |
1829 | { | |
1830 | current_uid[i] = '0'; | |
1831 | return current_uid; | |
1832 | } | |
1833 | else if(current_uid[i] != '9') | |
1834 | { | |
1835 | current_uid[i]++; | |
1836 | return current_uid; | |
1837 | } | |
1838 | else | |
1839 | current_uid[i] = 'A'; | |
1840 | } | |
1841 | ||
1842 | /* if this next if() triggers, we're fucked. */ | |
1843 | if(current_uid[3] == 'Z') | |
1844 | { | |
1845 | current_uid[i] = 'A'; | |
1846 | s_assert(0); | |
1847 | } | |
1848 | else | |
1849 | current_uid[i]++; | |
1850 | ||
1851 | return current_uid; | |
1852 | } | |
1853 | ||
1854 | /* | |
1855 | * close_connection | |
1856 | * Close the physical connection. This function must make | |
1857 | * MyConnect(client_p) == FALSE, and set client_p->from == NULL. | |
1858 | */ | |
1859 | void | |
1860 | close_connection(struct Client *client_p) | |
1861 | { | |
1862 | s_assert(client_p != NULL); | |
1863 | if(client_p == NULL) | |
1864 | return; | |
1865 | ||
1866 | s_assert(MyConnect(client_p)); | |
1867 | if(!MyConnect(client_p)) | |
1868 | return; | |
1869 | ||
1870 | if(IsServer(client_p)) | |
1871 | { | |
1872 | struct server_conf *server_p; | |
1873 | ||
8bd5767b JT |
1874 | ServerStats.is_sv++; |
1875 | ServerStats.is_sbs += client_p->localClient->sendB; | |
1876 | ServerStats.is_sbr += client_p->localClient->receiveB; | |
679ccbe5 | 1877 | ServerStats.is_sti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); |
212380e3 AC |
1878 | |
1879 | /* | |
1880 | * If the connection has been up for a long amount of time, schedule | |
1881 | * a 'quick' reconnect, else reset the next-connect cycle. | |
1882 | */ | |
1883 | if((server_p = find_server_conf(client_p->name)) != NULL) | |
1884 | { | |
1885 | /* | |
1886 | * Reschedule a faster reconnect, if this was a automatically | |
1887 | * connected configuration entry. (Note that if we have had | |
1888 | * a rehash in between, the status has been changed to | |
1889 | * CONF_ILLEGAL). But only do this if it was a "good" link. | |
1890 | */ | |
1891 | server_p->hold = time(NULL); | |
1892 | server_p->hold += | |
1893 | (server_p->hold - client_p->localClient->lasttime > | |
1894 | HANGONGOODLINK) ? HANGONRETRYDELAY : ConFreq(server_p->class); | |
1895 | } | |
1896 | ||
1897 | } | |
1898 | else if(IsClient(client_p)) | |
1899 | { | |
8bd5767b JT |
1900 | ServerStats.is_cl++; |
1901 | ServerStats.is_cbs += client_p->localClient->sendB; | |
1902 | ServerStats.is_cbr += client_p->localClient->receiveB; | |
679ccbe5 | 1903 | ServerStats.is_cti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); |
212380e3 AC |
1904 | } |
1905 | else | |
47adde3d | 1906 | ServerStats.is_ni++; |
54ac8b60 | 1907 | |
c6d72037 | 1908 | if(client_p->localClient->F != NULL) |
54ac8b60 VY |
1909 | { |
1910 | /* attempt to flush any pending dbufs. Evil, but .. -- adrian */ | |
1911 | if(!IsIOError(client_p)) | |
1912 | send_queued(client_p); | |
1913 | ||
c6d72037 | 1914 | del_from_cli_fd_hash(client_p); |
54ac8b60 VY |
1915 | rb_close(client_p->localClient->F); |
1916 | client_p->localClient->F = NULL; | |
1917 | } | |
1918 | ||
734d420e JT |
1919 | rb_linebuf_donebuf(&client_p->localClient->buf_sendq); |
1920 | rb_linebuf_donebuf(&client_p->localClient->buf_recvq); | |
212380e3 AC |
1921 | detach_conf(client_p); |
1922 | ||
1923 | /* XXX shouldnt really be done here. */ | |
1924 | detach_server_conf(client_p); | |
1925 | ||
1926 | client_p->from = NULL; /* ...this should catch them! >:) --msa */ | |
1927 | ClearMyConnect(client_p); | |
1928 | SetIOError(client_p); | |
1929 | } | |
1930 | ||
1931 | ||
1932 | ||
1933 | void | |
1934 | error_exit_client(struct Client *client_p, int error) | |
1935 | { | |
1936 | /* | |
1937 | * ...hmm, with non-blocking sockets we might get | |
1938 | * here from quite valid reasons, although.. why | |
1939 | * would select report "data available" when there | |
1940 | * wasn't... so, this must be an error anyway... --msa | |
1941 | * actually, EOF occurs when read() returns 0 and | |
1942 | * in due course, select() returns that fd as ready | |
1943 | * for reading even though it ends up being an EOF. -avalon | |
1944 | */ | |
1945 | char errmsg[255]; | |
734d420e | 1946 | int current_error = rb_get_sockerr(client_p->localClient->F); |
212380e3 AC |
1947 | |
1948 | SetIOError(client_p); | |
1949 | ||
1950 | if(IsServer(client_p) || IsHandshake(client_p)) | |
1951 | { | |
212380e3 AC |
1952 | if(error == 0) |
1953 | { | |
1954 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
1955 | "Server %s closed the connection", | |
b3ebc7ab | 1956 | client_p->name); |
212380e3 AC |
1957 | |
1958 | ilog(L_SERVER, "Server %s closed the connection", | |
1959 | log_client_name(client_p, SHOW_IP)); | |
1960 | } | |
1961 | else | |
1962 | { | |
1963 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
1964 | "Lost connection to %s: %s", | |
1965 | client_p->name, strerror(current_error)); | |
1966 | ilog(L_SERVER, "Lost connection to %s: %s", | |
1967 | log_client_name(client_p, SHOW_IP), strerror(current_error)); | |
1968 | } | |
212380e3 AC |
1969 | } |
1970 | ||
1971 | if(error == 0) | |
f427c8b0 | 1972 | rb_strlcpy(errmsg, "Remote host closed the connection", sizeof(errmsg)); |
212380e3 | 1973 | else |
b2f0da88 | 1974 | rb_snprintf(errmsg, sizeof(errmsg), "Read error: %s", strerror(current_error)); |
212380e3 AC |
1975 | |
1976 | exit_client(client_p, client_p, &me, errmsg); | |
1977 | } |