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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 | |
212380e3 AC |
24 | */ |
25 | #include "stdinc.h" | |
9b8e9eb3 | 26 | #include "defaults.h" |
212380e3 | 27 | |
212380e3 AC |
28 | #include "client.h" |
29 | #include "class.h" | |
212380e3 | 30 | #include "hash.h" |
4562c604 | 31 | #include "match.h" |
212380e3 | 32 | #include "ircd.h" |
212380e3 AC |
33 | #include "numeric.h" |
34 | #include "packet.h" | |
d3f6b808 | 35 | #include "authd.h" |
212380e3 AC |
36 | #include "s_conf.h" |
37 | #include "s_newconf.h" | |
4016731b | 38 | #include "logger.h" |
212380e3 AC |
39 | #include "s_serv.h" |
40 | #include "s_stats.h" | |
41 | #include "send.h" | |
42 | #include "whowas.h" | |
43 | #include "s_user.h" | |
212380e3 | 44 | #include "hash.h" |
212380e3 | 45 | #include "hostmask.h" |
212380e3 AC |
46 | #include "listener.h" |
47 | #include "hook.h" | |
48 | #include "msg.h" | |
49 | #include "monitor.h" | |
54015b5f | 50 | #include "reject.h" |
994544c2 | 51 | #include "scache.h" |
a4bf26dd | 52 | #include "rb_dictionary.h" |
c6d72037 | 53 | #include "sslproc.h" |
77d3d2db | 54 | #include "s_assert.h" |
212380e3 AC |
55 | |
56 | #define DEBUG_EXITED_CLIENTS | |
57 | ||
330fc5c1 AC |
58 | static void check_pings_list(rb_dlink_list * list); |
59 | static void check_unknowns_list(rb_dlink_list * list); | |
212380e3 AC |
60 | static void free_exited_clients(void *unused); |
61 | static void exit_aborted_clients(void *unused); | |
62 | ||
63 | static int exit_remote_client(struct Client *, struct Client *, struct Client *,const char *); | |
64 | static int exit_remote_server(struct Client *, struct Client *, struct Client *,const char *); | |
65 | static int exit_local_client(struct Client *, struct Client *, struct Client *,const char *); | |
66 | static int exit_unknown_client(struct Client *, struct Client *, struct Client *,const char *); | |
67 | static int exit_local_server(struct Client *, struct Client *, struct Client *,const char *); | |
68 | static int qs_server(struct Client *, struct Client *, struct Client *, const char *comment); | |
69 | ||
70 | static EVH check_pings; | |
71 | ||
5433b83e VY |
72 | static rb_bh *client_heap = NULL; |
73 | static rb_bh *lclient_heap = NULL; | |
b09cbaa3 | 74 | static rb_bh *pclient_heap = NULL; |
5433b83e | 75 | static rb_bh *user_heap = NULL; |
c127b45b | 76 | static rb_bh *away_heap = NULL; |
5433b83e | 77 | static char current_uid[IDLEN]; |
de7cf7e0 | 78 | static uint32_t current_connid = 0; |
212380e3 | 79 | |
4177311e | 80 | rb_dictionary *nd_dict = NULL; |
43de0f45 | 81 | |
212380e3 AC |
82 | enum |
83 | { | |
84 | D_LINED, | |
aae358c0 | 85 | K_LINED |
212380e3 AC |
86 | }; |
87 | ||
330fc5c1 | 88 | rb_dlink_list dead_list; |
212380e3 | 89 | #ifdef DEBUG_EXITED_CLIENTS |
330fc5c1 | 90 | static rb_dlink_list dead_remote_list; |
212380e3 AC |
91 | #endif |
92 | ||
93 | struct abort_client | |
94 | { | |
330fc5c1 | 95 | rb_dlink_node node; |
212380e3 AC |
96 | struct Client *client; |
97 | char notice[REASONLEN]; | |
98 | }; | |
99 | ||
330fc5c1 | 100 | static rb_dlink_list abort_list; |
212380e3 AC |
101 | |
102 | ||
103 | /* | |
104 | * init_client | |
105 | * | |
106 | * inputs - NONE | |
107 | * output - NONE | |
108 | * side effects - initialize client free memory | |
109 | */ | |
110 | void | |
111 | init_client(void) | |
112 | { | |
113 | /* | |
114 | * start off the check ping event .. -- adrian | |
115 | * Every 30 seconds is plenty -- db | |
116 | */ | |
1087485c | 117 | client_heap = rb_bh_create(sizeof(struct Client), CLIENT_HEAP_SIZE, "client_heap"); |
adc6cc42 VY |
118 | lclient_heap = rb_bh_create(sizeof(struct LocalUser), LCLIENT_HEAP_SIZE, "lclient_heap"); |
119 | pclient_heap = rb_bh_create(sizeof(struct PreClient), PCLIENT_HEAP_SIZE, "pclient_heap"); | |
b09cbaa3 | 120 | user_heap = rb_bh_create(sizeof(struct User), USER_HEAP_SIZE, "user_heap"); |
c127b45b | 121 | away_heap = rb_bh_create(AWAYLEN, AWAY_HEAP_SIZE, "away_heap"); |
adc6cc42 | 122 | |
3b2ebd04 JT |
123 | rb_event_addish("check_pings", check_pings, NULL, 30); |
124 | rb_event_addish("free_exited_clients", &free_exited_clients, NULL, 4); | |
125 | rb_event_addish("exit_aborted_clients", exit_aborted_clients, NULL, 1); | |
5a606a8f | 126 | rb_event_add("flood_recalc", flood_recalc, NULL, 1); |
43de0f45 | 127 | |
a4bf26dd | 128 | nd_dict = rb_dictionary_create("nickdelay", irccmp); |
212380e3 AC |
129 | } |
130 | ||
de7cf7e0 AC |
131 | /* |
132 | * connid_get - allocate a connid | |
133 | * | |
134 | * inputs - none | |
135 | * outputs - a connid token which is used to represent a logical circuit | |
136 | * side effects - current_connid is incremented, possibly multiple times. | |
137 | * the association of the connid to it's client is committed. | |
138 | */ | |
139 | uint32_t | |
140 | connid_get(struct Client *client_p) | |
141 | { | |
142 | s_assert(MyClient(client_p)); | |
143 | if (!MyClient(client_p)) | |
144 | return 0; | |
145 | ||
146 | /* find a connid that is available */ | |
147 | while (find_cli_connid_hash(++current_connid) != NULL) | |
148 | { | |
149 | /* handle wraparound, current_connid must NEVER be 0 */ | |
150 | if (current_connid == 0) | |
151 | ++current_connid; | |
152 | } | |
153 | ||
154 | add_to_cli_connid_hash(client_p, current_connid); | |
155 | rb_dlinkAddAlloc(RB_UINT_TO_POINTER(current_connid), &client_p->localClient->connids); | |
156 | ||
157 | return current_connid; | |
158 | } | |
159 | ||
160 | /* | |
161 | * connid_put - free a connid | |
162 | * | |
163 | * inputs - connid to free | |
164 | * outputs - nothing | |
165 | * side effects - connid bookkeeping structures are freed | |
166 | */ | |
167 | void | |
168 | connid_put(uint32_t id) | |
169 | { | |
170 | struct Client *client_p; | |
171 | ||
172 | s_assert(id != 0); | |
173 | if (id == 0) | |
174 | return; | |
175 | ||
176 | client_p = find_cli_connid_hash(id); | |
177 | if (client_p == NULL) | |
178 | return; | |
179 | ||
180 | del_from_cli_connid_hash(id); | |
181 | rb_dlinkFindDestroy(RB_UINT_TO_POINTER(id), &client_p->localClient->connids); | |
182 | } | |
183 | ||
184 | /* | |
185 | * client_release_connids - release any connids still attached to a client | |
186 | * | |
187 | * inputs - client to garbage collect | |
188 | * outputs - none | |
189 | * side effects - client's connids are garbage collected | |
190 | */ | |
191 | void | |
192 | client_release_connids(struct Client *client_p) | |
193 | { | |
194 | rb_dlink_node *ptr, *ptr2; | |
195 | ||
196 | s_assert(MyClient(client_p)); | |
197 | if (!MyClient(client_p)) | |
198 | return; | |
199 | ||
200 | RB_DLINK_FOREACH_SAFE(ptr, ptr2, client_p->localClient->connids.head) | |
201 | connid_put(RB_POINTER_TO_UINT(ptr->data)); | |
202 | } | |
212380e3 AC |
203 | |
204 | /* | |
205 | * make_client - create a new Client struct and set it to initial state. | |
206 | * | |
207 | * from == NULL, create local client (a client connected | |
208 | * to a socket). | |
209 | * | |
210 | * from, create remote client (behind a socket | |
211 | * associated with the client defined by | |
212 | * 'from'). ('from' is a local client!!). | |
213 | */ | |
214 | struct Client * | |
215 | make_client(struct Client *from) | |
216 | { | |
217 | struct Client *client_p = NULL; | |
218 | struct LocalUser *localClient; | |
219 | ||
398b6a73 | 220 | client_p = rb_bh_alloc(client_heap); |
212380e3 AC |
221 | |
222 | if(from == NULL) | |
223 | { | |
224 | client_p->from = client_p; /* 'from' of local client is self! */ | |
225 | ||
b09cbaa3 | 226 | localClient = rb_bh_alloc(lclient_heap); |
212380e3 AC |
227 | SetMyConnect(client_p); |
228 | client_p->localClient = localClient; | |
229 | ||
e3354945 | 230 | client_p->localClient->lasttime = client_p->localClient->firsttime = rb_current_time(); |
212380e3 | 231 | |
c5c2f506 | 232 | client_p->localClient->F = NULL; |
212380e3 | 233 | |
5ef68b13 | 234 | client_p->preClient = rb_bh_alloc(pclient_heap); |
212380e3 AC |
235 | |
236 | /* as good a place as any... */ | |
330fc5c1 | 237 | rb_dlinkAdd(client_p, &client_p->localClient->tnode, &unknown_list); |
212380e3 AC |
238 | } |
239 | else | |
240 | { /* from is not NULL */ | |
241 | client_p->localClient = NULL; | |
242 | client_p->preClient = NULL; | |
243 | client_p->from = from; /* 'from' of local client is self! */ | |
244 | } | |
55abcbb2 | 245 | |
212380e3 AC |
246 | SetUnknown(client_p); |
247 | strcpy(client_p->username, "unknown"); | |
248 | ||
249 | return client_p; | |
250 | } | |
251 | ||
252 | void | |
253 | free_pre_client(struct Client *client_p) | |
254 | { | |
212380e3 AC |
255 | s_assert(NULL != client_p); |
256 | ||
257 | if(client_p->preClient == NULL) | |
258 | return; | |
259 | ||
d3f6b808 EM |
260 | s_assert(client_p->preClient->authd_cid == 0); |
261 | ||
262 | rb_free(client_p->preClient->authd_data); | |
263 | rb_free(client_p->preClient->authd_reason); | |
7fc09bc4 | 264 | |
398b6a73 | 265 | rb_bh_free(pclient_heap, client_p->preClient); |
212380e3 AC |
266 | client_p->preClient = NULL; |
267 | } | |
268 | ||
269 | static void | |
270 | free_local_client(struct Client *client_p) | |
271 | { | |
272 | s_assert(NULL != client_p); | |
273 | s_assert(&me != client_p); | |
274 | ||
275 | if(client_p->localClient == NULL) | |
276 | return; | |
277 | ||
278 | /* | |
279 | * clean up extra sockets from P-lines which have been discarded. | |
280 | */ | |
281 | if(client_p->localClient->listener) | |
282 | { | |
283 | s_assert(0 < client_p->localClient->listener->ref_count); | |
284 | if(0 == --client_p->localClient->listener->ref_count | |
285 | && !client_p->localClient->listener->active) | |
286 | free_listener(client_p->localClient->listener); | |
287 | client_p->localClient->listener = 0; | |
288 | } | |
289 | ||
de7cf7e0 | 290 | client_release_connids(client_p); |
c6d72037 VY |
291 | if(client_p->localClient->F != NULL) |
292 | { | |
3b2ebd04 | 293 | rb_close(client_p->localClient->F); |
c6d72037 | 294 | } |
212380e3 AC |
295 | |
296 | if(client_p->localClient->passwd) | |
297 | { | |
298 | memset(client_p->localClient->passwd, 0, | |
299 | strlen(client_p->localClient->passwd)); | |
637c4932 | 300 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
301 | } |
302 | ||
90afc118 | 303 | rb_free(client_p->localClient->auth_user); |
637c4932 VY |
304 | rb_free(client_p->localClient->challenge); |
305 | rb_free(client_p->localClient->fullcaps); | |
306 | rb_free(client_p->localClient->opername); | |
307 | rb_free(client_p->localClient->mangledhost); | |
0e52d0d4 JT |
308 | if (client_p->localClient->privset) |
309 | privilegeset_unref(client_p->localClient->privset); | |
212380e3 | 310 | |
a4165b42 AS |
311 | if(IsSSL(client_p)) |
312 | ssld_decrement_clicount(client_p->localClient->ssl_ctl); | |
55abcbb2 | 313 | |
a4165b42 AS |
314 | if(IsCapable(client_p, CAP_ZIP)) |
315 | ssld_decrement_clicount(client_p->localClient->z_ctl); | |
c6d72037 | 316 | |
398b6a73 | 317 | rb_bh_free(lclient_heap, client_p->localClient); |
212380e3 AC |
318 | client_p->localClient = NULL; |
319 | } | |
320 | ||
321 | void | |
322 | free_client(struct Client *client_p) | |
323 | { | |
324 | s_assert(NULL != client_p); | |
325 | s_assert(&me != client_p); | |
326 | free_local_client(client_p); | |
327 | free_pre_client(client_p); | |
8eda114a | 328 | rb_free(client_p->certfp); |
398b6a73 | 329 | rb_bh_free(client_heap, client_p); |
212380e3 AC |
330 | } |
331 | ||
332 | /* | |
333 | * check_pings - go through the local client list and check activity | |
334 | * kill off stuff that should die | |
335 | * | |
336 | * inputs - NOT USED (from event) | |
337 | * output - next time_t when check_pings() should be called again | |
55abcbb2 | 338 | * side effects - |
212380e3 AC |
339 | * |
340 | * | |
341 | * A PING can be sent to clients as necessary. | |
342 | * | |
343 | * Client/Server ping outs are handled. | |
344 | */ | |
345 | ||
346 | /* | |
347 | * Addon from adrian. We used to call this after nextping seconds, | |
348 | * however I've changed it to run once a second. This is only for | |
349 | * PING timeouts, not K/etc-line checks (thanks dianora!). Having it | |
350 | * run once a second makes life a lot easier - when a new client connects | |
351 | * and they need a ping in 4 seconds, if nextping was set to 20 seconds | |
352 | * we end up waiting 20 seconds. This is stupid. :-) | |
353 | * I will optimise (hah!) check_pings() once I've finished working on | |
354 | * tidying up other network IO evilnesses. | |
355 | * -- adrian | |
356 | */ | |
357 | ||
358 | static void | |
359 | check_pings(void *notused) | |
360 | { | |
361 | check_pings_list(&lclient_list); | |
362 | check_pings_list(&serv_list); | |
363 | check_unknowns_list(&unknown_list); | |
364 | } | |
365 | ||
366 | /* | |
367 | * Check_pings_list() | |
368 | * | |
369 | * inputs - pointer to list to check | |
370 | * output - NONE | |
55abcbb2 | 371 | * side effects - |
212380e3 AC |
372 | */ |
373 | static void | |
330fc5c1 | 374 | check_pings_list(rb_dlink_list * list) |
212380e3 AC |
375 | { |
376 | char scratch[32]; /* way too generous but... */ | |
377 | struct Client *client_p; /* current local client_p being examined */ | |
378 | int ping = 0; /* ping time value from client */ | |
637c4932 | 379 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 380 | |
637c4932 | 381 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
382 | { |
383 | client_p = ptr->data; | |
384 | ||
212380e3 AC |
385 | if(!MyConnect(client_p) || IsDead(client_p)) |
386 | continue; | |
387 | ||
e2a98043 | 388 | ping = get_client_ping(client_p); |
212380e3 | 389 | |
e3354945 | 390 | if(ping < (rb_current_time() - client_p->localClient->lasttime)) |
212380e3 AC |
391 | { |
392 | /* | |
393 | * If the client/server hasnt talked to us in 2*ping seconds | |
394 | * and it has a ping time, then close its connection. | |
395 | */ | |
e3354945 | 396 | if(((rb_current_time() - client_p->localClient->lasttime) >= (2 * ping) |
212380e3 AC |
397 | && (client_p->flags & FLAGS_PINGSENT))) |
398 | { | |
e2a98043 | 399 | if(IsServer(client_p)) |
212380e3 | 400 | { |
e2a98043 | 401 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 | 402 | "No response from %s, closing link", |
b3ebc7ab | 403 | client_p->name); |
212380e3 AC |
404 | ilog(L_SERVER, |
405 | "No response from %s, closing link", | |
406 | log_client_name(client_p, HIDE_IP)); | |
407 | } | |
5203cba5 | 408 | (void) snprintf(scratch, sizeof(scratch), |
212380e3 | 409 | "Ping timeout: %d seconds", |
e3354945 | 410 | (int) (rb_current_time() - client_p->localClient->lasttime)); |
212380e3 AC |
411 | |
412 | exit_client(client_p, client_p, &me, scratch); | |
413 | continue; | |
414 | } | |
415 | else if((client_p->flags & FLAGS_PINGSENT) == 0) | |
416 | { | |
417 | /* | |
418 | * if we havent PINGed the connection and we havent | |
419 | * heard from it in a while, PING it to make sure | |
420 | * it is still alive. | |
421 | */ | |
422 | client_p->flags |= FLAGS_PINGSENT; | |
423 | /* not nice but does the job */ | |
e3354945 | 424 | client_p->localClient->lasttime = rb_current_time() - ping; |
212380e3 AC |
425 | sendto_one(client_p, "PING :%s", me.name); |
426 | } | |
427 | } | |
428 | /* ping_timeout: */ | |
429 | ||
430 | } | |
431 | } | |
432 | ||
433 | /* | |
434 | * check_unknowns_list | |
435 | * | |
436 | * inputs - pointer to list of unknown clients | |
437 | * output - NONE | |
438 | * side effects - unknown clients get marked for termination after n seconds | |
439 | */ | |
440 | static void | |
330fc5c1 | 441 | check_unknowns_list(rb_dlink_list * list) |
212380e3 | 442 | { |
637c4932 | 443 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 444 | struct Client *client_p; |
35cf4c79 | 445 | int timeout; |
212380e3 | 446 | |
637c4932 | 447 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
448 | { |
449 | client_p = ptr->data; | |
450 | ||
451 | if(IsDead(client_p) || IsClosing(client_p)) | |
452 | continue; | |
453 | ||
d3f6b808 EM |
454 | /* Still querying with authd */ |
455 | if(client_p->preClient != NULL && client_p->preClient->authd_cid != 0) | |
6bb4fb83 JT |
456 | continue; |
457 | ||
212380e3 AC |
458 | /* |
459 | * Check UNKNOWN connections - if they have been in this state | |
460 | * for > 30s, close them. | |
461 | */ | |
462 | ||
35cf4c79 | 463 | timeout = IsAnyServer(client_p) ? ConfigFileEntry.connect_timeout : 30; |
e3354945 | 464 | if((rb_current_time() - client_p->localClient->firsttime) > timeout) |
35cf4c79 JT |
465 | { |
466 | if(IsAnyServer(client_p)) | |
467 | { | |
468 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
469 | "No response from %s, closing link", | |
b3ebc7ab | 470 | client_p->name); |
35cf4c79 JT |
471 | ilog(L_SERVER, |
472 | "No response from %s, closing link", | |
473 | log_client_name(client_p, HIDE_IP)); | |
474 | } | |
212380e3 | 475 | exit_client(client_p, client_p, &me, "Connection timed out"); |
35cf4c79 | 476 | } |
212380e3 AC |
477 | } |
478 | } | |
479 | ||
480 | static void | |
481 | notify_banned_client(struct Client *client_p, struct ConfItem *aconf, int ban) | |
482 | { | |
483 | static const char conn_closed[] = "Connection closed"; | |
484 | static const char d_lined[] = "D-lined"; | |
485 | static const char k_lined[] = "K-lined"; | |
212380e3 AC |
486 | const char *reason = NULL; |
487 | const char *exit_reason = conn_closed; | |
488 | ||
a12ad044 | 489 | if(ConfigFileEntry.kline_with_reason) |
212380e3 | 490 | { |
a12ad044 | 491 | reason = get_user_ban_reason(aconf); |
b52c2949 | 492 | exit_reason = reason; |
212380e3 AC |
493 | } |
494 | else | |
495 | { | |
405ae5ce | 496 | reason = aconf->status == D_LINED ? d_lined : k_lined; |
212380e3 AC |
497 | } |
498 | ||
499 | if(ban == D_LINED && !IsPerson(client_p)) | |
500 | sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined"); | |
501 | else | |
502 | sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP), | |
503 | me.name, client_p->name, reason); | |
55abcbb2 KB |
504 | |
505 | exit_client(client_p, client_p, &me, | |
212380e3 AC |
506 | EmptyString(ConfigFileEntry.kline_reason) ? exit_reason : |
507 | ConfigFileEntry.kline_reason); | |
508 | } | |
509 | ||
510 | /* | |
511 | * check_banned_lines | |
512 | * inputs - NONE | |
513 | * output - NONE | |
170703fe | 514 | * side effects - Check all connections for a pending k/dline against the |
212380e3 AC |
515 | * client, exit the client if found. |
516 | */ | |
517 | void | |
518 | check_banned_lines(void) | |
519 | { | |
1bb1f1b0 JT |
520 | check_dlines(); |
521 | check_klines(); | |
522 | check_xlines(); | |
212380e3 AC |
523 | } |
524 | ||
525 | /* check_klines_event() | |
526 | * | |
527 | * inputs - | |
528 | * outputs - | |
529 | * side effects - check_klines() is called, kline_queued unset | |
530 | */ | |
531 | void | |
532 | check_klines_event(void *unused) | |
533 | { | |
f66f0baa | 534 | kline_queued = false; |
212380e3 AC |
535 | check_klines(); |
536 | } | |
537 | ||
538 | /* check_klines | |
539 | * | |
540 | * inputs - | |
541 | * outputs - | |
542 | * side effects - all clients will be checked for klines | |
543 | */ | |
544 | void | |
545 | check_klines(void) | |
546 | { | |
547 | struct Client *client_p; | |
548 | struct ConfItem *aconf; | |
330fc5c1 | 549 | rb_dlink_node *ptr; |
637c4932 | 550 | rb_dlink_node *next_ptr; |
212380e3 | 551 | |
637c4932 | 552 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
553 | { |
554 | client_p = ptr->data; | |
555 | ||
556 | if(IsMe(client_p) || !IsPerson(client_p)) | |
557 | continue; | |
558 | ||
559 | if((aconf = find_kline(client_p)) != NULL) | |
560 | { | |
561 | if(IsExemptKline(client_p)) | |
562 | { | |
563 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
408024fa JT |
564 | "KLINE over-ruled for %s, client is kline_exempt [%s@%s]", |
565 | get_client_name(client_p, HIDE_IP), | |
566 | aconf->user, aconf->host); | |
212380e3 AC |
567 | continue; |
568 | } | |
569 | ||
570 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
571 | "KLINE active for %s", | |
572 | get_client_name(client_p, HIDE_IP)); | |
573 | ||
574 | notify_banned_client(client_p, aconf, K_LINED); | |
575 | continue; | |
576 | } | |
577 | } | |
578 | } | |
579 | ||
212380e3 AC |
580 | /* check_dlines() |
581 | * | |
582 | * inputs - | |
583 | * outputs - | |
584 | * side effects - all clients will be checked for dlines | |
585 | */ | |
586 | void | |
587 | check_dlines(void) | |
588 | { | |
589 | struct Client *client_p; | |
590 | struct ConfItem *aconf; | |
330fc5c1 | 591 | rb_dlink_node *ptr; |
637c4932 | 592 | rb_dlink_node *next_ptr; |
212380e3 | 593 | |
637c4932 | 594 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
595 | { |
596 | client_p = ptr->data; | |
597 | ||
598 | if(IsMe(client_p)) | |
599 | continue; | |
600 | ||
e867208d | 601 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, GET_SS_FAMILY(&client_p->localClient->ip))) != NULL) |
212380e3 AC |
602 | { |
603 | if(aconf->status & CONF_EXEMPTDLINE) | |
604 | continue; | |
605 | ||
606 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
607 | "DLINE active for %s", | |
608 | get_client_name(client_p, HIDE_IP)); | |
609 | ||
610 | notify_banned_client(client_p, aconf, D_LINED); | |
611 | continue; | |
612 | } | |
613 | } | |
614 | ||
615 | /* dlines need to be checked against unknowns too */ | |
637c4932 | 616 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) |
212380e3 AC |
617 | { |
618 | client_p = ptr->data; | |
619 | ||
e867208d | 620 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, GET_SS_FAMILY(&client_p->localClient->ip))) != NULL) |
212380e3 AC |
621 | { |
622 | if(aconf->status & CONF_EXEMPTDLINE) | |
623 | continue; | |
624 | ||
625 | notify_banned_client(client_p, aconf, D_LINED); | |
626 | } | |
627 | } | |
628 | } | |
629 | ||
630 | /* check_xlines | |
631 | * | |
632 | * inputs - | |
633 | * outputs - | |
634 | * side effects - all clients will be checked for xlines | |
635 | */ | |
636 | void | |
637 | check_xlines(void) | |
638 | { | |
639 | struct Client *client_p; | |
640 | struct ConfItem *aconf; | |
330fc5c1 | 641 | rb_dlink_node *ptr; |
637c4932 | 642 | rb_dlink_node *next_ptr; |
212380e3 | 643 | |
637c4932 | 644 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
645 | { |
646 | client_p = ptr->data; | |
647 | ||
648 | if(IsMe(client_p) || !IsPerson(client_p)) | |
649 | continue; | |
650 | ||
651 | if((aconf = find_xline(client_p->info, 1)) != NULL) | |
652 | { | |
653 | if(IsExemptKline(client_p)) | |
654 | { | |
655 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
408024fa JT |
656 | "XLINE over-ruled for %s, client is kline_exempt [%s]", |
657 | get_client_name(client_p, HIDE_IP), | |
70ea02eb | 658 | aconf->host); |
212380e3 AC |
659 | continue; |
660 | } | |
661 | ||
662 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
663 | get_client_name(client_p, HIDE_IP)); | |
664 | ||
665 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
666 | continue; | |
667 | } | |
668 | } | |
669 | } | |
670 | ||
330692a1 KB |
671 | /* resv_nick_fnc |
672 | * | |
673 | * inputs - resv, reason, time | |
674 | * outputs - NONE | |
675 | * side effects - all local clients matching resv will be FNC'd | |
676 | */ | |
677 | void | |
678 | resv_nick_fnc(const char *mask, const char *reason, int temp_time) | |
679 | { | |
680 | struct Client *client_p, *target_p; | |
681 | rb_dlink_node *ptr; | |
682 | rb_dlink_node *next_ptr; | |
683 | char *nick; | |
684 | char note[NICKLEN+10]; | |
685 | ||
686 | if (!ConfigFileEntry.resv_fnc) | |
687 | return; | |
688 | ||
689 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
690 | { | |
691 | client_p = ptr->data; | |
692 | ||
693 | if(IsMe(client_p) || !IsPerson(client_p) || IsExemptResv(client_p)) | |
694 | continue; | |
695 | ||
07d3283f KB |
696 | /* Skip users that already have UID nicks. */ |
697 | if(IsDigit(client_p->name[0])) | |
698 | continue; | |
699 | ||
330692a1 KB |
700 | if(match_esc(mask, client_p->name)) |
701 | { | |
702 | nick = client_p->id; | |
703 | ||
704 | /* Tell opers. */ | |
705 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
706 | "RESV forced nick change for %s!%s@%s to %s; nick matched [%s] (%s)", | |
707 | client_p->name, client_p->username, client_p->host, nick, mask, reason); | |
708 | ||
709 | sendto_realops_snomask(SNO_NCHANGE, L_ALL, | |
710 | "Nick change: From %s to %s [%s@%s]", | |
711 | client_p->name, nick, client_p->username, client_p->host); | |
712 | ||
713 | /* Tell the user. */ | |
714 | if (temp_time > 0) | |
715 | { | |
716 | sendto_one_notice(client_p, | |
717 | ":*** Nick %s is temporarily unavailable on this server.", | |
718 | client_p->name); | |
719 | } | |
720 | else | |
721 | { | |
722 | sendto_one_notice(client_p, | |
723 | ":*** Nick %s is no longer available on this server.", | |
724 | client_p->name); | |
725 | } | |
726 | ||
727 | /* Do all of the nick-changing gymnastics. */ | |
728 | client_p->tsinfo = rb_current_time(); | |
b47f8a4f | 729 | whowas_add_history(client_p, 1); |
330692a1 | 730 | |
07d3283f KB |
731 | monitor_signoff(client_p); |
732 | ||
330692a1 KB |
733 | invalidate_bancache_user(client_p); |
734 | ||
583f064f | 735 | sendto_common_channels_local(client_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s", |
330692a1 KB |
736 | client_p->name, client_p->username, client_p->host, nick); |
737 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
738 | use_id(client_p), nick, (long) client_p->tsinfo); | |
739 | ||
740 | del_from_client_hash(client_p->name, client_p); | |
741 | rb_strlcpy(client_p->name, nick, sizeof(client_p->name)); | |
742 | add_to_client_hash(nick, client_p); | |
743 | ||
07d3283f KB |
744 | monitor_signon(client_p); |
745 | ||
330692a1 KB |
746 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) |
747 | { | |
748 | target_p = ptr->data; | |
749 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); | |
750 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
751 | } | |
752 | ||
5203cba5 | 753 | snprintf(note, sizeof(note), "Nick: %s", nick); |
330692a1 KB |
754 | rb_note(client_p->localClient->F, note); |
755 | } | |
756 | } | |
757 | } | |
758 | ||
212380e3 AC |
759 | /* |
760 | * update_client_exit_stats | |
761 | * | |
762 | * input - pointer to client | |
763 | * output - NONE | |
55abcbb2 | 764 | * side effects - |
212380e3 AC |
765 | */ |
766 | static void | |
767 | update_client_exit_stats(struct Client *client_p) | |
768 | { | |
769 | if(IsServer(client_p)) | |
770 | { | |
771 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
772 | "Server %s split from %s", | |
773 | client_p->name, client_p->servptr->name); | |
774 | if(HasSentEob(client_p)) | |
775 | eob_count--; | |
776 | } | |
777 | else if(IsClient(client_p)) | |
778 | { | |
779 | --Count.total; | |
780 | if(IsOper(client_p)) | |
781 | --Count.oper; | |
782 | if(IsInvisible(client_p)) | |
783 | --Count.invisi; | |
784 | } | |
785 | ||
786 | if(splitchecking && !splitmode) | |
787 | check_splitmode(NULL); | |
788 | } | |
789 | ||
790 | /* | |
791 | * release_client_state | |
792 | * | |
793 | * input - pointer to client to release | |
794 | * output - NONE | |
55abcbb2 | 795 | * side effects - |
212380e3 AC |
796 | */ |
797 | static void | |
798 | release_client_state(struct Client *client_p) | |
799 | { | |
800 | if(client_p->user != NULL) | |
801 | { | |
802 | free_user(client_p->user, client_p); /* try this here */ | |
803 | } | |
804 | if(client_p->serv) | |
805 | { | |
806 | if(client_p->serv->user != NULL) | |
807 | free_user(client_p->serv->user, client_p); | |
808 | if(client_p->serv->fullcaps) | |
637c4932 VY |
809 | rb_free(client_p->serv->fullcaps); |
810 | rb_free(client_p->serv); | |
212380e3 AC |
811 | } |
812 | } | |
813 | ||
814 | /* | |
815 | * remove_client_from_list | |
816 | * inputs - point to client to remove | |
817 | * output - NONE | |
818 | * side effects - taken the code from ExitOneClient() for this | |
819 | * and placed it here. - avalon | |
820 | */ | |
821 | static void | |
822 | remove_client_from_list(struct Client *client_p) | |
823 | { | |
824 | s_assert(NULL != client_p); | |
825 | ||
826 | if(client_p == NULL) | |
827 | return; | |
828 | ||
829 | /* A client made with make_client() | |
830 | * is on the unknown_list until removed. | |
831 | * If it =does= happen to exit before its removed from that list | |
832 | * and its =not= on the global_client_list, it will core here. | |
833 | * short circuit that case now -db | |
834 | */ | |
835 | if(client_p->node.prev == NULL && client_p->node.next == NULL) | |
836 | return; | |
837 | ||
330fc5c1 | 838 | rb_dlinkDelete(&client_p->node, &global_client_list); |
212380e3 AC |
839 | |
840 | update_client_exit_stats(client_p); | |
841 | } | |
842 | ||
843 | ||
2d28539c JT |
844 | /* clean_nick() |
845 | * | |
846 | * input - nickname to check, flag for nick from local client | |
847 | * output - 0 if erroneous, else 1 | |
848 | * side effects - | |
849 | */ | |
850 | int | |
851 | clean_nick(const char *nick, int loc_client) | |
852 | { | |
853 | int len = 0; | |
854 | ||
855 | /* nicks cant start with a digit or -, and must have a length */ | |
856 | if(*nick == '-' || *nick == '\0') | |
857 | return 0; | |
858 | ||
859 | if(loc_client && IsDigit(*nick)) | |
860 | return 0; | |
861 | ||
862 | for(; *nick; nick++) | |
863 | { | |
864 | len++; | |
865 | if(!IsNickChar(*nick)) | |
866 | return 0; | |
867 | } | |
868 | ||
869 | /* nicklen is +1 */ | |
870 | if(len >= NICKLEN && (unsigned int)len >= ConfigFileEntry.nicklen) | |
871 | return 0; | |
872 | ||
873 | return 1; | |
874 | } | |
875 | ||
212380e3 AC |
876 | /* |
877 | * find_person - find person by (nick)name. | |
878 | * inputs - pointer to name | |
879 | * output - return client pointer | |
880 | * side effects - | |
881 | */ | |
882 | struct Client * | |
883 | find_person(const char *name) | |
884 | { | |
885 | struct Client *c2ptr; | |
886 | ||
887 | c2ptr = find_client(name); | |
888 | ||
889 | if(c2ptr && IsPerson(c2ptr)) | |
890 | return (c2ptr); | |
891 | return (NULL); | |
892 | } | |
893 | ||
894 | struct Client * | |
895 | find_named_person(const char *name) | |
896 | { | |
897 | struct Client *c2ptr; | |
898 | ||
899 | c2ptr = find_named_client(name); | |
900 | ||
901 | if(c2ptr && IsPerson(c2ptr)) | |
902 | return (c2ptr); | |
903 | return (NULL); | |
904 | } | |
905 | ||
906 | ||
907 | /* | |
55abcbb2 KB |
908 | * find_chasing - find the client structure for a nick name (user) |
909 | * using history mechanism if necessary. If the client is not found, | |
212380e3 AC |
910 | * an error message (NO SUCH NICK) is generated. If the client was found |
911 | * through the history, chasing will be 1 and otherwise 0. | |
912 | */ | |
913 | struct Client * | |
914 | find_chasing(struct Client *source_p, const char *user, int *chasing) | |
915 | { | |
916 | struct Client *who; | |
917 | ||
918 | if(MyClient(source_p)) | |
919 | who = find_named_person(user); | |
920 | else | |
921 | who = find_person(user); | |
922 | ||
923 | if(chasing) | |
924 | *chasing = 0; | |
925 | ||
926 | if(who || IsDigit(*user)) | |
927 | return who; | |
928 | ||
b47f8a4f | 929 | if(!(who = whowas_get_history(user, (long) KILLCHASETIMELIMIT))) |
212380e3 AC |
930 | { |
931 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
932 | form_str(ERR_NOSUCHNICK), user); | |
933 | return (NULL); | |
934 | } | |
935 | if(chasing) | |
936 | *chasing = 1; | |
937 | return who; | |
938 | } | |
939 | ||
940 | /* | |
941 | * get_client_name - Return the name of the client | |
942 | * for various tracking and | |
943 | * admin purposes. The main purpose of this function is to | |
944 | * return the "socket host" name of the client, if that | |
945 | * differs from the advertised name (other than case). | |
946 | * But, this can be used to any client structure. | |
947 | * | |
948 | * NOTE 1: | |
949 | * Watch out the allocation of "nbuf", if either source_p->name | |
950 | * or source_p->sockhost gets changed into pointers instead of | |
951 | * directly allocated within the structure... | |
952 | * | |
953 | * NOTE 2: | |
954 | * Function return either a pointer to the structure (source_p) or | |
955 | * to internal buffer (nbuf). *NEVER* use the returned pointer | |
956 | * to modify what it points!!! | |
957 | */ | |
958 | ||
959 | const char * | |
960 | get_client_name(struct Client *client, int showip) | |
961 | { | |
962 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
963 | ||
964 | s_assert(NULL != client); | |
965 | if(client == NULL) | |
966 | return NULL; | |
967 | ||
968 | if(MyConnect(client)) | |
969 | { | |
970 | if(!irccmp(client->name, client->host)) | |
971 | return client->name; | |
972 | ||
55abcbb2 | 973 | if(ConfigFileEntry.hide_spoof_ips && |
212380e3 AC |
974 | showip == SHOW_IP && IsIPSpoof(client)) |
975 | showip = MASK_IP; | |
212380e3 AC |
976 | if(IsAnyServer(client)) |
977 | showip = MASK_IP; | |
212380e3 AC |
978 | |
979 | /* And finally, let's get the host information, ip or name */ | |
980 | switch (showip) | |
981 | { | |
982 | case SHOW_IP: | |
5203cba5 | 983 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", |
55abcbb2 | 984 | client->name, client->username, |
212380e3 AC |
985 | client->sockhost); |
986 | break; | |
987 | case MASK_IP: | |
5203cba5 | 988 | snprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", |
212380e3 AC |
989 | client->name, client->username); |
990 | break; | |
991 | default: | |
5203cba5 | 992 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", |
212380e3 AC |
993 | client->name, client->username, client->host); |
994 | } | |
995 | return nbuf; | |
996 | } | |
997 | ||
55abcbb2 | 998 | /* As pointed out by Adel Mezibra |
212380e3 AC |
999 | * Neph|l|m@EFnet. Was missing a return here. |
1000 | */ | |
1001 | return client->name; | |
1002 | } | |
55abcbb2 | 1003 | |
212380e3 AC |
1004 | /* log_client_name() |
1005 | * | |
1006 | * This version is the same as get_client_name, but doesnt contain the | |
1007 | * code that will hide IPs always. This should be used for logfiles. | |
1008 | */ | |
1009 | const char * | |
1010 | log_client_name(struct Client *target_p, int showip) | |
1011 | { | |
1012 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
1013 | ||
1014 | if(target_p == NULL) | |
1015 | return NULL; | |
1016 | ||
1017 | if(MyConnect(target_p)) | |
1018 | { | |
1019 | if(irccmp(target_p->name, target_p->host) == 0) | |
1020 | return target_p->name; | |
1021 | ||
1022 | switch (showip) | |
1023 | { | |
1024 | case SHOW_IP: | |
5203cba5 | 1025 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, |
212380e3 AC |
1026 | target_p->username, target_p->sockhost); |
1027 | break; | |
1028 | ||
212380e3 | 1029 | default: |
5203cba5 | 1030 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, |
212380e3 AC |
1031 | target_p->username, target_p->host); |
1032 | } | |
1033 | ||
1034 | return nbuf; | |
1035 | } | |
1036 | ||
1037 | return target_p->name; | |
1038 | } | |
1039 | ||
1040 | /* is_remote_connect - Returns whether a server was /connect'ed by a remote | |
1041 | * oper (send notices netwide) */ | |
1042 | int | |
1043 | is_remote_connect(struct Client *client_p) | |
1044 | { | |
1045 | struct Client *oper; | |
1046 | ||
1047 | if (client_p->serv == NULL) | |
1048 | return FALSE; | |
1049 | oper = find_named_person(client_p->serv->by); | |
1050 | return oper != NULL && IsOper(oper) && !MyConnect(oper); | |
1051 | } | |
1052 | ||
1053 | static void | |
1054 | free_exited_clients(void *unused) | |
1055 | { | |
330fc5c1 | 1056 | rb_dlink_node *ptr, *next; |
212380e3 AC |
1057 | struct Client *target_p; |
1058 | ||
5cefa1d6 | 1059 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_list.head) |
212380e3 AC |
1060 | { |
1061 | target_p = ptr->data; | |
1062 | ||
1063 | #ifdef DEBUG_EXITED_CLIENTS | |
1064 | { | |
1065 | struct abort_client *abt; | |
330fc5c1 | 1066 | rb_dlink_node *aptr; |
212380e3 AC |
1067 | int found = 0; |
1068 | ||
5cefa1d6 | 1069 | RB_DLINK_FOREACH(aptr, abort_list.head) |
212380e3 AC |
1070 | { |
1071 | abt = aptr->data; | |
1072 | if(abt->client == target_p) | |
1073 | { | |
1074 | s_assert(0); | |
55abcbb2 | 1075 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 AC |
1076 | "On abort_list: %s stat: %u flags: %u/%u handler: %c", |
1077 | target_p->name, (unsigned int) target_p->status, | |
1078 | target_p->flags, target_p->flags2, target_p->handler); | |
1079 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1080 | "Please report this to the charybdis developers!"); |
212380e3 AC |
1081 | found++; |
1082 | } | |
1083 | } | |
1084 | ||
1085 | if(found) | |
1086 | { | |
330fc5c1 | 1087 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1088 | continue; |
1089 | } | |
1090 | } | |
1091 | #endif | |
1092 | ||
1093 | if(ptr->data == NULL) | |
1094 | { | |
1095 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1096 | "Warning: null client on dead_list!"); | |
330fc5c1 | 1097 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1098 | continue; |
1099 | } | |
1100 | release_client_state(target_p); | |
1101 | free_client(target_p); | |
330fc5c1 | 1102 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1103 | } |
1104 | ||
1105 | #ifdef DEBUG_EXITED_CLIENTS | |
5cefa1d6 | 1106 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_remote_list.head) |
212380e3 AC |
1107 | { |
1108 | target_p = ptr->data; | |
1109 | ||
1110 | if(ptr->data == NULL) | |
1111 | { | |
1112 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1113 | "Warning: null client on dead_list!"); | |
330fc5c1 | 1114 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1115 | continue; |
1116 | } | |
1117 | release_client_state(target_p); | |
1118 | free_client(target_p); | |
330fc5c1 | 1119 | rb_dlinkDestroy(ptr, &dead_remote_list); |
212380e3 AC |
1120 | } |
1121 | #endif | |
55abcbb2 | 1122 | |
212380e3 AC |
1123 | } |
1124 | ||
55abcbb2 | 1125 | /* |
212380e3 | 1126 | ** Remove all clients that depend on source_p; assumes all (S)QUITs have |
55abcbb2 KB |
1127 | ** already been sent. we make sure to exit a server's dependent clients |
1128 | ** and servers before the server itself; exit_one_client takes care of | |
212380e3 | 1129 | ** actually removing things off llists. tweaked from +CSr31 -orabidoo |
cbeab4bc | 1130 | */ |
212380e3 AC |
1131 | /* |
1132 | * added sanity test code.... source_p->serv might be NULL... | |
1133 | */ | |
1134 | static void | |
1135 | recurse_remove_clients(struct Client *source_p, const char *comment) | |
1136 | { | |
1137 | struct Client *target_p; | |
330fc5c1 | 1138 | rb_dlink_node *ptr, *ptr_next; |
212380e3 AC |
1139 | |
1140 | if(IsMe(source_p)) | |
1141 | return; | |
1142 | ||
1143 | if(source_p->serv == NULL) /* oooops. uh this is actually a major bug */ | |
1144 | return; | |
1145 | ||
1146 | /* this is very ugly, but it saves cpu :P */ | |
1147 | if(ConfigFileEntry.nick_delay > 0) | |
1148 | { | |
5cefa1d6 | 1149 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) |
212380e3 AC |
1150 | { |
1151 | target_p = ptr->data; | |
1152 | target_p->flags |= FLAGS_KILLED; | |
1153 | add_nd_entry(target_p->name); | |
1154 | ||
1155 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1156 | exit_remote_client(NULL, target_p, &me, comment); | |
1157 | } | |
1158 | } | |
1159 | else | |
1160 | { | |
5cefa1d6 | 1161 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) |
212380e3 AC |
1162 | { |
1163 | target_p = ptr->data; | |
1164 | target_p->flags |= FLAGS_KILLED; | |
1165 | ||
1166 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1167 | exit_remote_client(NULL, target_p, &me, comment); | |
1168 | } | |
55abcbb2 | 1169 | } |
212380e3 | 1170 | |
5cefa1d6 | 1171 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) |
212380e3 AC |
1172 | { |
1173 | target_p = ptr->data; | |
1174 | recurse_remove_clients(target_p, comment); | |
1175 | qs_server(NULL, target_p, &me, comment); | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | /* | |
1180 | ** Remove *everything* that depends on source_p, from all lists, and sending | |
856df9a3 | 1181 | ** all necessary SQUITs. source_p itself is still on the lists, |
212380e3 | 1182 | ** and its SQUITs have been sent except for the upstream one -orabidoo |
cbeab4bc | 1183 | */ |
212380e3 AC |
1184 | static void |
1185 | remove_dependents(struct Client *client_p, | |
1186 | struct Client *source_p, | |
1187 | struct Client *from, const char *comment, const char *comment1) | |
1188 | { | |
1189 | struct Client *to; | |
330fc5c1 | 1190 | rb_dlink_node *ptr, *next; |
212380e3 | 1191 | |
5cefa1d6 | 1192 | RB_DLINK_FOREACH_SAFE(ptr, next, serv_list.head) |
212380e3 AC |
1193 | { |
1194 | to = ptr->data; | |
1195 | ||
856df9a3 | 1196 | if(IsMe(to) || to == source_p->from || to == client_p) |
212380e3 AC |
1197 | continue; |
1198 | ||
856df9a3 | 1199 | sendto_one(to, "SQUIT %s :%s", get_id(source_p, to), comment); |
212380e3 AC |
1200 | } |
1201 | ||
1202 | recurse_remove_clients(source_p, comment1); | |
1203 | } | |
1204 | ||
1205 | void | |
1206 | exit_aborted_clients(void *unused) | |
1207 | { | |
1208 | struct abort_client *abt; | |
330fc5c1 | 1209 | rb_dlink_node *ptr, *next; |
5cefa1d6 | 1210 | RB_DLINK_FOREACH_SAFE(ptr, next, abort_list.head) |
212380e3 AC |
1211 | { |
1212 | abt = ptr->data; | |
1213 | ||
1214 | #ifdef DEBUG_EXITED_CLIENTS | |
1215 | { | |
330fc5c1 | 1216 | if(rb_dlinkFind(abt->client, &dead_list)) |
212380e3 AC |
1217 | { |
1218 | s_assert(0); | |
55abcbb2 | 1219 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 AC |
1220 | "On dead_list: %s stat: %u flags: %u/%u handler: %c", |
1221 | abt->client->name, (unsigned int) abt->client->status, | |
1222 | abt->client->flags, abt->client->flags2, abt->client->handler); | |
1223 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1224 | "Please report this to the charybdis developers!"); |
212380e3 AC |
1225 | continue; |
1226 | } | |
1227 | } | |
1228 | #endif | |
1229 | ||
1230 | s_assert(*((unsigned long*)abt->client) != 0xdeadbeef); /* This is lame but its a debug thing */ | |
330fc5c1 | 1231 | rb_dlinkDelete(ptr, &abort_list); |
212380e3 AC |
1232 | |
1233 | if(IsAnyServer(abt->client)) | |
1234 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1235 | "Closing link to %s: %s", | |
b3ebc7ab | 1236 | abt->client->name, abt->notice); |
212380e3 AC |
1237 | |
1238 | /* its no longer on abort list - we *must* remove | |
1239 | * FLAGS_CLOSING otherwise exit_client() will not run --fl | |
1240 | */ | |
1241 | abt->client->flags &= ~FLAGS_CLOSING; | |
1242 | exit_client(abt->client, abt->client, &me, abt->notice); | |
637c4932 | 1243 | rb_free(abt); |
212380e3 AC |
1244 | } |
1245 | } | |
1246 | ||
1247 | ||
1248 | /* | |
1249 | * dead_link - Adds client to a list of clients that need an exit_client() | |
212380e3 AC |
1250 | */ |
1251 | void | |
cef7a7bc | 1252 | dead_link(struct Client *client_p, int sendqex) |
212380e3 AC |
1253 | { |
1254 | struct abort_client *abt; | |
1255 | ||
1256 | s_assert(!IsMe(client_p)); | |
1257 | if(IsDead(client_p) || IsClosing(client_p) || IsMe(client_p)) | |
1258 | return; | |
1259 | ||
eddc2ab6 | 1260 | abt = (struct abort_client *) rb_malloc(sizeof(struct abort_client)); |
212380e3 | 1261 | |
cef7a7bc | 1262 | if(sendqex) |
f427c8b0 | 1263 | rb_strlcpy(abt->notice, "Max SendQ exceeded", sizeof(abt->notice)); |
212380e3 | 1264 | else |
5203cba5 | 1265 | snprintf(abt->notice, sizeof(abt->notice), "Write error: %s", strerror(errno)); |
212380e3 AC |
1266 | |
1267 | abt->client = client_p; | |
1268 | SetIOError(client_p); | |
1269 | SetDead(client_p); | |
1270 | SetClosing(client_p); | |
330fc5c1 | 1271 | rb_dlinkAdd(abt, &abt->node, &abort_list); |
212380e3 AC |
1272 | } |
1273 | ||
1274 | ||
1275 | /* This does the remove of the user from channels..local or remote */ | |
1276 | static inline void | |
1277 | exit_generic_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1278 | const char *comment) | |
1279 | { | |
637c4932 | 1280 | rb_dlink_node *ptr, *next_ptr; |
212380e3 AC |
1281 | |
1282 | if(IsOper(source_p)) | |
330fc5c1 | 1283 | rb_dlinkFindDestroy(source_p, &oper_list); |
212380e3 | 1284 | |
583f064f | 1285 | sendto_common_channels_local(source_p, NOCAPS, NOCAPS, ":%s!%s@%s QUIT :%s", |
212380e3 AC |
1286 | source_p->name, |
1287 | source_p->username, source_p->host, comment); | |
1288 | ||
1289 | remove_user_from_channels(source_p); | |
1290 | ||
1291 | /* Should not be in any channels now */ | |
1292 | s_assert(source_p->user->channel.head == NULL); | |
1293 | ||
1294 | /* Clean up invitefield */ | |
637c4932 | 1295 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->user->invited.head) |
212380e3 AC |
1296 | { |
1297 | del_invite(ptr->data, source_p); | |
1298 | } | |
1299 | ||
1300 | /* Clean up allow lists */ | |
1301 | del_all_accepts(source_p); | |
1302 | ||
b47f8a4f AC |
1303 | whowas_add_history(source_p, 0); |
1304 | whowas_off_history(source_p); | |
212380e3 AC |
1305 | |
1306 | monitor_signoff(source_p); | |
1307 | ||
1308 | if(has_id(source_p)) | |
1309 | del_from_id_hash(source_p->id, source_p); | |
1310 | ||
1311 | del_from_hostname_hash(source_p->orighost, source_p); | |
1312 | del_from_client_hash(source_p->name, source_p); | |
1313 | remove_client_from_list(source_p); | |
1314 | } | |
1315 | ||
55abcbb2 | 1316 | /* |
212380e3 AC |
1317 | * Assumes IsPerson(source_p) && !MyConnect(source_p) |
1318 | */ | |
1319 | ||
1320 | static int | |
1321 | exit_remote_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1322 | const char *comment) | |
1323 | { | |
1324 | exit_generic_client(client_p, source_p, from, comment); | |
55abcbb2 | 1325 | |
212380e3 AC |
1326 | if(source_p->servptr && source_p->servptr->serv) |
1327 | { | |
330fc5c1 | 1328 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users); |
212380e3 AC |
1329 | } |
1330 | ||
1331 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1332 | { | |
1333 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1334 | ":%s QUIT :%s", use_id(source_p), comment); | |
212380e3 AC |
1335 | } |
1336 | ||
1337 | SetDead(source_p); | |
1338 | #ifdef DEBUG_EXITED_CLIENTS | |
330fc5c1 | 1339 | rb_dlinkAddAlloc(source_p, &dead_remote_list); |
212380e3 | 1340 | #else |
330fc5c1 | 1341 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1342 | #endif |
1343 | return(CLIENT_EXITED); | |
1344 | } | |
1345 | ||
1346 | /* | |
07554369 | 1347 | * This assumes IsUnknown(source_p) == true and MyConnect(source_p) == true |
212380e3 AC |
1348 | */ |
1349 | ||
1350 | static int | |
1351 | exit_unknown_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1352 | const char *comment) | |
1353 | { | |
d3f6b808 | 1354 | authd_abort_client(client_p); |
330fc5c1 | 1355 | rb_dlinkDelete(&source_p->localClient->tnode, &unknown_list); |
212380e3 AC |
1356 | |
1357 | if(!IsIOError(source_p)) | |
dd12a19c JT |
1358 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", |
1359 | source_p->user != NULL ? source_p->host : "127.0.0.1", | |
1360 | comment); | |
212380e3 AC |
1361 | |
1362 | close_connection(source_p); | |
1363 | ||
1364 | if(has_id(source_p)) | |
1365 | del_from_id_hash(source_p->id, source_p); | |
1366 | ||
1367 | del_from_hostname_hash(source_p->host, source_p); | |
1368 | del_from_client_hash(source_p->name, source_p); | |
1369 | remove_client_from_list(source_p); | |
212380e3 | 1370 | SetDead(source_p); |
330fc5c1 | 1371 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1372 | |
1373 | /* Note that we don't need to add unknowns to the dead_list */ | |
1374 | return(CLIENT_EXITED); | |
1375 | } | |
1376 | ||
1377 | static int | |
55abcbb2 | 1378 | exit_remote_server(struct Client *client_p, struct Client *source_p, struct Client *from, |
212380e3 AC |
1379 | const char *comment) |
1380 | { | |
1381 | static char comment1[(HOSTLEN*2)+2]; | |
1382 | static char newcomment[BUFSIZE]; | |
1383 | struct Client *target_p; | |
55abcbb2 | 1384 | |
212380e3 AC |
1385 | if(ConfigServerHide.flatten_links) |
1386 | strcpy(comment1, "*.net *.split"); | |
1387 | else | |
1388 | { | |
66c8fdd2 | 1389 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1390 | strcat(comment1, " "); |
1391 | strcat(comment1, source_p->name); | |
1392 | } | |
1393 | if (IsPerson(from)) | |
5203cba5 | 1394 | snprintf(newcomment, sizeof(newcomment), "by %s: %s", |
212380e3 AC |
1395 | from->name, comment); |
1396 | ||
1397 | if(source_p->serv != NULL) | |
1398 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1399 | ||
1400 | if(source_p->servptr && source_p->servptr->serv) | |
330fc5c1 | 1401 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1402 | else |
1403 | s_assert(0); | |
1404 | ||
330fc5c1 | 1405 | rb_dlinkFindDestroy(source_p, &global_serv_list); |
212380e3 | 1406 | target_p = source_p->from; |
55abcbb2 | 1407 | |
212380e3 AC |
1408 | if(target_p != NULL && IsServer(target_p) && target_p != client_p && |
1409 | !IsMe(target_p) && (source_p->flags & FLAGS_KILLED) == 0) | |
1410 | { | |
55abcbb2 | 1411 | sendto_one(target_p, ":%s SQUIT %s :%s", |
212380e3 AC |
1412 | get_id(from, target_p), get_id(source_p, target_p), |
1413 | comment); | |
1414 | } | |
1415 | ||
1416 | if(has_id(source_p)) | |
1417 | del_from_id_hash(source_p->id, source_p); | |
1418 | ||
1419 | del_from_client_hash(source_p->name, source_p); | |
55abcbb2 | 1420 | remove_client_from_list(source_p); |
994544c2 | 1421 | scache_split(source_p->serv->nameinfo); |
55abcbb2 | 1422 | |
212380e3 AC |
1423 | SetDead(source_p); |
1424 | #ifdef DEBUG_EXITED_CLIENTS | |
330fc5c1 | 1425 | rb_dlinkAddAlloc(source_p, &dead_remote_list); |
212380e3 | 1426 | #else |
330fc5c1 | 1427 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1428 | #endif |
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | static int | |
55abcbb2 | 1433 | qs_server(struct Client *client_p, struct Client *source_p, struct Client *from, |
212380e3 AC |
1434 | const char *comment) |
1435 | { | |
212380e3 | 1436 | if(source_p->servptr && source_p->servptr->serv) |
330fc5c1 | 1437 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1438 | else |
1439 | s_assert(0); | |
1440 | ||
330fc5c1 | 1441 | rb_dlinkFindDestroy(source_p, &global_serv_list); |
55abcbb2 | 1442 | |
212380e3 AC |
1443 | if(has_id(source_p)) |
1444 | del_from_id_hash(source_p->id, source_p); | |
1445 | ||
1446 | del_from_client_hash(source_p->name, source_p); | |
55abcbb2 | 1447 | remove_client_from_list(source_p); |
19807b5b | 1448 | scache_split(source_p->serv->nameinfo); |
55abcbb2 | 1449 | |
212380e3 | 1450 | SetDead(source_p); |
55abcbb2 | 1451 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1452 | return 0; |
1453 | } | |
1454 | ||
1455 | static int | |
55abcbb2 | 1456 | exit_local_server(struct Client *client_p, struct Client *source_p, struct Client *from, |
212380e3 AC |
1457 | const char *comment) |
1458 | { | |
1459 | static char comment1[(HOSTLEN*2)+2]; | |
1460 | static char newcomment[BUFSIZE]; | |
1461 | unsigned int sendk, recvk; | |
55abcbb2 | 1462 | |
330fc5c1 AC |
1463 | rb_dlinkDelete(&source_p->localClient->tnode, &serv_list); |
1464 | rb_dlinkFindDestroy(source_p, &global_serv_list); | |
55abcbb2 | 1465 | |
212380e3 AC |
1466 | sendk = source_p->localClient->sendK; |
1467 | recvk = source_p->localClient->receiveK; | |
1468 | ||
1469 | /* Always show source here, so the server notices show | |
1470 | * which side initiated the split -- jilles | |
1471 | */ | |
5203cba5 | 1472 | snprintf(newcomment, sizeof(newcomment), "by %s: %s", |
212380e3 AC |
1473 | from == source_p ? me.name : from->name, comment); |
1474 | if (!IsIOError(source_p)) | |
1475 | sendto_one(source_p, "SQUIT %s :%s", use_id(source_p), | |
1476 | newcomment); | |
1477 | if(client_p != NULL && source_p != client_p && !IsIOError(source_p)) | |
1478 | { | |
1479 | sendto_one(source_p, "ERROR :Closing Link: 127.0.0.1 %s (%s)", | |
1480 | source_p->name, comment); | |
1481 | } | |
55abcbb2 | 1482 | |
212380e3 | 1483 | if(source_p->servptr && source_p->servptr->serv) |
330fc5c1 | 1484 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1485 | else |
1486 | s_assert(0); | |
1487 | ||
1488 | ||
1489 | close_connection(source_p); | |
55abcbb2 | 1490 | |
212380e3 AC |
1491 | if(ConfigServerHide.flatten_links) |
1492 | strcpy(comment1, "*.net *.split"); | |
1493 | else | |
1494 | { | |
66c8fdd2 | 1495 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1496 | strcat(comment1, " "); |
1497 | strcat(comment1, source_p->name); | |
1498 | } | |
1499 | ||
1500 | if(source_p->serv != NULL) | |
1501 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1502 | ||
1503 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s was connected" | |
1504 | " for %ld seconds. %d/%d sendK/recvK.", | |
adc6cc42 | 1505 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); |
212380e3 AC |
1506 | |
1507 | ilog(L_SERVER, "%s was connected for %ld seconds. %d/%d sendK/recvK.", | |
adc6cc42 | 1508 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); |
55abcbb2 | 1509 | |
212380e3 AC |
1510 | if(has_id(source_p)) |
1511 | del_from_id_hash(source_p->id, source_p); | |
1512 | ||
1513 | del_from_client_hash(source_p->name, source_p); | |
1514 | remove_client_from_list(source_p); | |
994544c2 | 1515 | scache_split(source_p->serv->nameinfo); |
55abcbb2 | 1516 | |
212380e3 | 1517 | SetDead(source_p); |
330fc5c1 | 1518 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1519 | return 0; |
1520 | } | |
1521 | ||
1522 | ||
55abcbb2 | 1523 | /* |
07554369 | 1524 | * This assumes IsPerson(source_p) == true && MyConnect(source_p) == true |
212380e3 AC |
1525 | */ |
1526 | ||
1527 | static int | |
1528 | exit_local_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1529 | const char *comment) | |
1530 | { | |
1531 | unsigned long on_for; | |
08d75d97 | 1532 | char tbuf[26]; |
212380e3 AC |
1533 | |
1534 | exit_generic_client(client_p, source_p, from, comment); | |
1535 | clear_monitor(source_p); | |
1536 | ||
1537 | s_assert(IsPerson(source_p)); | |
330fc5c1 AC |
1538 | rb_dlinkDelete(&source_p->localClient->tnode, &lclient_list); |
1539 | rb_dlinkDelete(&source_p->lnode, &me.serv->users); | |
212380e3 AC |
1540 | |
1541 | if(IsOper(source_p)) | |
330fc5c1 | 1542 | rb_dlinkFindDestroy(source_p, &local_oper_list); |
212380e3 AC |
1543 | |
1544 | sendto_realops_snomask(SNO_CCONN, L_ALL, | |
1545 | "Client exiting: %s (%s@%s) [%s] [%s]", | |
1546 | source_p->name, | |
1547 | source_p->username, source_p->host, comment, | |
1548 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255"); | |
1549 | ||
1550 | sendto_realops_snomask(SNO_CCONNEXT, L_ALL, | |
1551 | "CLIEXIT %s %s %s %s 0 %s", | |
1552 | source_p->name, source_p->username, source_p->host, | |
1553 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255", | |
1554 | comment); | |
1555 | ||
e3354945 | 1556 | on_for = rb_current_time() - source_p->localClient->firsttime; |
212380e3 | 1557 | |
9641f156 | 1558 | ilog(L_USER, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d", |
08d75d97 | 1559 | rb_ctime(rb_current_time(), tbuf, sizeof(tbuf)), on_for / 3600, |
212380e3 AC |
1560 | (on_for % 3600) / 60, on_for % 60, |
1561 | source_p->name, source_p->username, source_p->host, | |
9641f156 | 1562 | source_p->sockhost, |
212380e3 AC |
1563 | source_p->localClient->sendK, source_p->localClient->receiveK); |
1564 | ||
1565 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", source_p->host, comment); | |
1566 | close_connection(source_p); | |
1567 | ||
1568 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1569 | { | |
1570 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1571 | ":%s QUIT :%s", use_id(source_p), comment); | |
212380e3 AC |
1572 | } |
1573 | ||
1574 | SetDead(source_p); | |
330fc5c1 | 1575 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1576 | return(CLIENT_EXITED); |
1577 | } | |
1578 | ||
1579 | ||
1580 | /* | |
1581 | ** exit_client - This is old "m_bye". Name changed, because this is not a | |
1582 | ** protocol function, but a general server utility function. | |
1583 | ** | |
1584 | ** This function exits a client of *any* type (user, server, etc) | |
1585 | ** from this server. Also, this generates all necessary prototol | |
1586 | ** messages that this exit may cause. | |
1587 | ** | |
1588 | ** 1) If the client is a local client, then this implicitly | |
1589 | ** exits all other clients depending on this connection (e.g. | |
1590 | ** remote clients having 'from'-field that points to this. | |
1591 | ** | |
1592 | ** 2) If the client is a remote client, then only this is exited. | |
1593 | ** | |
1594 | ** For convenience, this function returns a suitable value for | |
1595 | ** m_function return value: | |
1596 | ** | |
1597 | ** CLIENT_EXITED if (client_p == source_p) | |
1598 | ** 0 if (client_p != source_p) | |
cbeab4bc | 1599 | */ |
212380e3 AC |
1600 | int |
1601 | exit_client(struct Client *client_p, /* The local client originating the | |
1602 | * exit or NULL, if this exit is | |
1603 | * generated by this server for | |
1604 | * internal reasons. | |
1605 | * This will not get any of the | |
1606 | * generated messages. */ | |
1607 | struct Client *source_p, /* Client exiting */ | |
1608 | struct Client *from, /* Client firing off this Exit, | |
1609 | * never NULL! */ | |
1610 | const char *comment /* Reason for the exit */ | |
1611 | ) | |
1612 | { | |
1613 | hook_data_client_exit hdata; | |
1614 | if(IsClosing(source_p)) | |
1615 | return -1; | |
1616 | ||
1617 | /* note, this HAS to be here, when we exit a client we attempt to | |
1618 | * send them data, if this generates a write error we must *not* add | |
1619 | * them to the abort list --fl | |
1620 | */ | |
1621 | SetClosing(source_p); | |
1622 | ||
1623 | hdata.local_link = client_p; | |
1624 | hdata.target = source_p; | |
1625 | hdata.from = from; | |
1626 | hdata.comment = comment; | |
1627 | call_hook(h_client_exit, &hdata); | |
1628 | ||
1629 | if(MyConnect(source_p)) | |
1630 | { | |
1631 | /* Local clients of various types */ | |
1632 | if(IsPerson(source_p)) | |
1633 | return exit_local_client(client_p, source_p, from, comment); | |
1634 | else if(IsServer(source_p)) | |
1635 | return exit_local_server(client_p, source_p, from, comment); | |
1636 | /* IsUnknown || IsConnecting || IsHandShake */ | |
1637 | else if(!IsReject(source_p)) | |
1638 | return exit_unknown_client(client_p, source_p, from, comment); | |
55abcbb2 KB |
1639 | } |
1640 | else | |
212380e3 AC |
1641 | { |
1642 | /* Remotes */ | |
1643 | if(IsPerson(source_p)) | |
1644 | return exit_remote_client(client_p, source_p, from, comment); | |
1645 | else if(IsServer(source_p)) | |
1646 | return exit_remote_server(client_p, source_p, from, comment); | |
1647 | } | |
1648 | ||
1649 | return -1; | |
1650 | } | |
1651 | ||
1652 | /* | |
1653 | * Count up local client memory | |
1654 | */ | |
1655 | ||
1656 | /* XXX one common Client list now */ | |
1657 | void | |
1658 | count_local_client_memory(size_t * count, size_t * local_client_memory_used) | |
1659 | { | |
1087485c JT |
1660 | size_t lusage; |
1661 | rb_bh_usage(lclient_heap, count, NULL, &lusage, NULL); | |
adc6cc42 | 1662 | *local_client_memory_used = lusage + (*count * (sizeof(void *) + sizeof(struct Client))); |
212380e3 AC |
1663 | } |
1664 | ||
1665 | /* | |
1666 | * Count up remote client memory | |
1667 | */ | |
1668 | void | |
1669 | count_remote_client_memory(size_t * count, size_t * remote_client_memory_used) | |
1670 | { | |
1087485c JT |
1671 | size_t lcount, rcount; |
1672 | rb_bh_usage(lclient_heap, &lcount, NULL, NULL, NULL); | |
1673 | rb_bh_usage(client_heap, &rcount, NULL, NULL, NULL); | |
1674 | *count = rcount - lcount; | |
adc6cc42 | 1675 | *remote_client_memory_used = *count * (sizeof(void *) + sizeof(struct Client)); |
212380e3 AC |
1676 | } |
1677 | ||
1678 | ||
1679 | /* | |
1680 | * accept processing, this adds a form of "caller ID" to ircd | |
55abcbb2 | 1681 | * |
212380e3 | 1682 | * If a client puts themselves into "caller ID only" mode, |
55abcbb2 | 1683 | * only clients that match a client pointer they have put on |
212380e3 AC |
1684 | * the accept list will be allowed to message them. |
1685 | * | |
1686 | * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ] | |
1687 | * | |
1688 | * [target.allow_list] -> [ source1 ] -> [source2 ] | |
1689 | * | |
1690 | * i.e. a target will have a link list of source pointers it will allow | |
1691 | * each source client then has a back pointer pointing back | |
1692 | * to the client that has it on its accept list. | |
1693 | * This allows for exit_one_client to remove these now bogus entries | |
55abcbb2 | 1694 | * from any client having an accept on them. |
212380e3 AC |
1695 | */ |
1696 | /* | |
1697 | * del_all_accepts | |
1698 | * | |
1699 | * inputs - pointer to exiting client | |
1700 | * output - NONE | |
1701 | * side effects - Walk through given clients allow_list and on_allow_list | |
1702 | * remove all references to this client | |
1703 | */ | |
1704 | void | |
1705 | del_all_accepts(struct Client *client_p) | |
1706 | { | |
330fc5c1 | 1707 | rb_dlink_node *ptr; |
637c4932 | 1708 | rb_dlink_node *next_ptr; |
212380e3 AC |
1709 | struct Client *target_p; |
1710 | ||
1711 | if(MyClient(client_p) && client_p->localClient->allow_list.head) | |
1712 | { | |
1713 | /* clear this clients accept list, and remove them from | |
1714 | * everyones on_accept_list | |
1715 | */ | |
637c4932 | 1716 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->allow_list.head) |
212380e3 AC |
1717 | { |
1718 | target_p = ptr->data; | |
330fc5c1 AC |
1719 | rb_dlinkFindDestroy(client_p, &target_p->on_allow_list); |
1720 | rb_dlinkDestroy(ptr, &client_p->localClient->allow_list); | |
212380e3 AC |
1721 | } |
1722 | } | |
1723 | ||
1724 | /* remove this client from everyones accept list */ | |
637c4932 | 1725 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) |
212380e3 AC |
1726 | { |
1727 | target_p = ptr->data; | |
330fc5c1 AC |
1728 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); |
1729 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
212380e3 AC |
1730 | } |
1731 | } | |
1732 | ||
1733 | /* | |
521f9d63 | 1734 | * show_ip() - asks if the true IP should be shown when source is |
55abcbb2 | 1735 | * asking for info about target |
212380e3 AC |
1736 | * |
1737 | * Inputs - source_p who is asking | |
1738 | * - target_p who do we want the info on | |
521f9d63 | 1739 | * Output - returns 1 if clear IP can be shown, otherwise 0 |
212380e3 AC |
1740 | * Side Effects - none |
1741 | */ | |
1742 | ||
1743 | int | |
1744 | show_ip(struct Client *source_p, struct Client *target_p) | |
1745 | { | |
1746 | if(IsAnyServer(target_p)) | |
1747 | { | |
212380e3 AC |
1748 | return 0; |
1749 | } | |
1750 | else if(IsIPSpoof(target_p)) | |
1751 | { | |
1752 | /* source == NULL indicates message is being sent | |
1753 | * to local opers. | |
1754 | */ | |
1755 | if(!ConfigFileEntry.hide_spoof_ips && | |
1756 | (source_p == NULL || MyOper(source_p))) | |
1757 | return 1; | |
1758 | return 0; | |
1759 | } | |
1760 | else if(IsDynSpoof(target_p) && (source_p != NULL && !IsOper(source_p))) | |
1761 | return 0; | |
1762 | else | |
1763 | return 1; | |
1764 | } | |
1765 | ||
1766 | int | |
1767 | show_ip_conf(struct ConfItem *aconf, struct Client *source_p) | |
1768 | { | |
1769 | if(IsConfDoSpoofIp(aconf)) | |
1770 | { | |
1771 | if(!ConfigFileEntry.hide_spoof_ips && MyOper(source_p)) | |
1772 | return 1; | |
1773 | ||
1774 | return 0; | |
1775 | } | |
1776 | else | |
1777 | return 1; | |
1778 | } | |
1779 | ||
364e59f8 JT |
1780 | int |
1781 | show_ip_whowas(struct Whowas *whowas, struct Client *source_p) | |
1782 | { | |
1783 | if(whowas->flags & WHOWAS_IP_SPOOFING) | |
1784 | if(ConfigFileEntry.hide_spoof_ips || !MyOper(source_p)) | |
1785 | return 0; | |
1786 | if(whowas->flags & WHOWAS_DYNSPOOF) | |
1787 | if(!IsOper(source_p)) | |
1788 | return 0; | |
1789 | return 1; | |
1790 | } | |
1791 | ||
212380e3 AC |
1792 | /* |
1793 | * make_user | |
1794 | * | |
1795 | * inputs - pointer to client struct | |
1796 | * output - pointer to struct User | |
1797 | * side effects - add's an User information block to a client | |
1798 | * if it was not previously allocated. | |
1799 | */ | |
1800 | struct User * | |
1801 | make_user(struct Client *client_p) | |
1802 | { | |
1803 | struct User *user; | |
1804 | ||
1805 | user = client_p->user; | |
1806 | if(!user) | |
1807 | { | |
398b6a73 | 1808 | user = (struct User *) rb_bh_alloc(user_heap); |
212380e3 AC |
1809 | user->refcnt = 1; |
1810 | client_p->user = user; | |
1811 | } | |
1812 | return user; | |
1813 | } | |
1814 | ||
1815 | /* | |
1816 | * make_server | |
1817 | * | |
1818 | * inputs - pointer to client struct | |
1819 | * output - pointer to server_t | |
1820 | * side effects - add's an Server information block to a client | |
1821 | * if it was not previously allocated. | |
1822 | */ | |
8f103562 | 1823 | struct Server * |
212380e3 AC |
1824 | make_server(struct Client *client_p) |
1825 | { | |
8f103562 | 1826 | struct Server *serv = client_p->serv; |
212380e3 AC |
1827 | |
1828 | if(!serv) | |
1829 | { | |
8f103562 | 1830 | serv = (struct Server *) rb_malloc(sizeof(struct Server)); |
212380e3 AC |
1831 | client_p->serv = serv; |
1832 | } | |
1833 | return client_p->serv; | |
1834 | } | |
1835 | ||
1836 | /* | |
1837 | * free_user | |
55abcbb2 | 1838 | * |
212380e3 AC |
1839 | * inputs - pointer to user struct |
1840 | * - pointer to client struct | |
1841 | * output - none | |
1842 | * side effects - Decrease user reference count by one and release block, | |
1843 | * if count reaches 0 | |
1844 | */ | |
1845 | void | |
1846 | free_user(struct User *user, struct Client *client_p) | |
1847 | { | |
c127b45b SB |
1848 | free_away(client_p); |
1849 | ||
212380e3 AC |
1850 | if(--user->refcnt <= 0) |
1851 | { | |
c127b45b SB |
1852 | if(user->away) |
1853 | rb_free((char *) user->away); | |
212380e3 AC |
1854 | /* |
1855 | * sanity check | |
1856 | */ | |
1857 | if(user->refcnt < 0 || user->invited.head || user->channel.head) | |
1858 | { | |
1859 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
0b9aca38 AC |
1860 | "* %p user (%s!%s@%s) %p %p %p %lu %d *", |
1861 | client_p, | |
212380e3 AC |
1862 | client_p ? client_p-> |
1863 | name : "<noname>", | |
1864 | client_p->username, | |
1865 | client_p->host, | |
0b9aca38 AC |
1866 | user, |
1867 | user->invited.head, | |
1868 | user->channel.head, | |
330fc5c1 | 1869 | rb_dlink_list_length(&user->channel), |
212380e3 AC |
1870 | user->refcnt); |
1871 | s_assert(!user->refcnt); | |
1872 | s_assert(!user->invited.head); | |
1873 | s_assert(!user->channel.head); | |
1874 | } | |
1875 | ||
398b6a73 | 1876 | rb_bh_free(user_heap, user); |
212380e3 AC |
1877 | } |
1878 | } | |
1879 | ||
e581ea8e | 1880 | void |
c127b45b | 1881 | allocate_away(struct Client *client_p) |
e581ea8e | 1882 | { |
c127b45b | 1883 | if(client_p->user->away == NULL) |
55abcbb2 | 1884 | client_p->user->away = rb_bh_alloc(away_heap); |
e581ea8e AC |
1885 | } |
1886 | ||
c127b45b | 1887 | |
e581ea8e | 1888 | void |
c127b45b | 1889 | free_away(struct Client *client_p) |
e581ea8e | 1890 | { |
c127b45b SB |
1891 | if(client_p->user != NULL && client_p->user->away != NULL) { |
1892 | rb_bh_free(away_heap, client_p->user->away); | |
1893 | client_p->user->away = NULL; | |
e581ea8e AC |
1894 | } |
1895 | } | |
1896 | ||
212380e3 AC |
1897 | void |
1898 | init_uid(void) | |
1899 | { | |
1900 | int i; | |
1901 | ||
1902 | for(i = 0; i < 3; i++) | |
1903 | current_uid[i] = me.id[i]; | |
1904 | ||
1905 | for(i = 3; i < 9; i++) | |
1906 | current_uid[i] = 'A'; | |
1907 | ||
1908 | current_uid[9] = '\0'; | |
1909 | } | |
1910 | ||
1911 | ||
1912 | char * | |
1913 | generate_uid(void) | |
1914 | { | |
428f9bc1 | 1915 | static int flipped = 0; |
212380e3 AC |
1916 | int i; |
1917 | ||
428f9bc1 | 1918 | uid_restart: |
212380e3 AC |
1919 | for(i = 8; i > 3; i--) |
1920 | { | |
1921 | if(current_uid[i] == 'Z') | |
1922 | { | |
1923 | current_uid[i] = '0'; | |
428f9bc1 | 1924 | goto out; |
212380e3 AC |
1925 | } |
1926 | else if(current_uid[i] != '9') | |
1927 | { | |
1928 | current_uid[i]++; | |
428f9bc1 | 1929 | goto out; |
212380e3 AC |
1930 | } |
1931 | else | |
1932 | current_uid[i] = 'A'; | |
1933 | } | |
1934 | ||
1935 | /* if this next if() triggers, we're fucked. */ | |
1936 | if(current_uid[3] == 'Z') | |
1937 | { | |
1938 | current_uid[i] = 'A'; | |
428f9bc1 | 1939 | flipped = 1; |
212380e3 AC |
1940 | } |
1941 | else | |
1942 | current_uid[i]++; | |
428f9bc1 AC |
1943 | out: |
1944 | /* if this happens..well, i'm not sure what to say, but lets handle it correctly */ | |
1945 | if(rb_unlikely(flipped)) | |
1946 | { | |
1947 | /* this slows down uid generation a bit... */ | |
1948 | if(find_id(current_uid) != NULL) | |
1949 | goto uid_restart; | |
1950 | } | |
212380e3 AC |
1951 | return current_uid; |
1952 | } | |
1953 | ||
1954 | /* | |
1955 | * close_connection | |
1956 | * Close the physical connection. This function must make | |
1957 | * MyConnect(client_p) == FALSE, and set client_p->from == NULL. | |
1958 | */ | |
1959 | void | |
1960 | close_connection(struct Client *client_p) | |
1961 | { | |
1962 | s_assert(client_p != NULL); | |
1963 | if(client_p == NULL) | |
1964 | return; | |
1965 | ||
1966 | s_assert(MyConnect(client_p)); | |
1967 | if(!MyConnect(client_p)) | |
1968 | return; | |
55abcbb2 | 1969 | |
212380e3 AC |
1970 | if(IsServer(client_p)) |
1971 | { | |
1972 | struct server_conf *server_p; | |
1973 | ||
8bd5767b JT |
1974 | ServerStats.is_sv++; |
1975 | ServerStats.is_sbs += client_p->localClient->sendB; | |
1976 | ServerStats.is_sbr += client_p->localClient->receiveB; | |
679ccbe5 | 1977 | ServerStats.is_sti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); |
212380e3 AC |
1978 | |
1979 | /* | |
1980 | * If the connection has been up for a long amount of time, schedule | |
1981 | * a 'quick' reconnect, else reset the next-connect cycle. | |
1982 | */ | |
1983 | if((server_p = find_server_conf(client_p->name)) != NULL) | |
1984 | { | |
1985 | /* | |
1986 | * Reschedule a faster reconnect, if this was a automatically | |
1987 | * connected configuration entry. (Note that if we have had | |
1988 | * a rehash in between, the status has been changed to | |
1989 | * CONF_ILLEGAL). But only do this if it was a "good" link. | |
1990 | */ | |
1991 | server_p->hold = time(NULL); | |
1992 | server_p->hold += | |
1993 | (server_p->hold - client_p->localClient->lasttime > | |
1994 | HANGONGOODLINK) ? HANGONRETRYDELAY : ConFreq(server_p->class); | |
1995 | } | |
1996 | ||
1997 | } | |
1998 | else if(IsClient(client_p)) | |
1999 | { | |
8bd5767b JT |
2000 | ServerStats.is_cl++; |
2001 | ServerStats.is_cbs += client_p->localClient->sendB; | |
2002 | ServerStats.is_cbr += client_p->localClient->receiveB; | |
679ccbe5 | 2003 | ServerStats.is_cti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); |
212380e3 AC |
2004 | } |
2005 | else | |
47adde3d | 2006 | ServerStats.is_ni++; |
54ac8b60 | 2007 | |
de7cf7e0 | 2008 | client_release_connids(client_p); |
36f0ec74 | 2009 | |
c6d72037 | 2010 | if(client_p->localClient->F != NULL) |
54ac8b60 VY |
2011 | { |
2012 | /* attempt to flush any pending dbufs. Evil, but .. -- adrian */ | |
2013 | if(!IsIOError(client_p)) | |
2014 | send_queued(client_p); | |
2015 | ||
2016 | rb_close(client_p->localClient->F); | |
2017 | client_p->localClient->F = NULL; | |
2018 | } | |
2019 | ||
734d420e JT |
2020 | rb_linebuf_donebuf(&client_p->localClient->buf_sendq); |
2021 | rb_linebuf_donebuf(&client_p->localClient->buf_recvq); | |
212380e3 AC |
2022 | detach_conf(client_p); |
2023 | ||
2024 | /* XXX shouldnt really be done here. */ | |
2025 | detach_server_conf(client_p); | |
2026 | ||
2027 | client_p->from = NULL; /* ...this should catch them! >:) --msa */ | |
2028 | ClearMyConnect(client_p); | |
2029 | SetIOError(client_p); | |
2030 | } | |
2031 | ||
2032 | ||
2033 | ||
2034 | void | |
2035 | error_exit_client(struct Client *client_p, int error) | |
2036 | { | |
2037 | /* | |
2038 | * ...hmm, with non-blocking sockets we might get | |
2039 | * here from quite valid reasons, although.. why | |
2040 | * would select report "data available" when there | |
2041 | * wasn't... so, this must be an error anyway... --msa | |
2042 | * actually, EOF occurs when read() returns 0 and | |
2043 | * in due course, select() returns that fd as ready | |
2044 | * for reading even though it ends up being an EOF. -avalon | |
2045 | */ | |
2046 | char errmsg[255]; | |
734d420e | 2047 | int current_error = rb_get_sockerr(client_p->localClient->F); |
212380e3 AC |
2048 | |
2049 | SetIOError(client_p); | |
2050 | ||
2051 | if(IsServer(client_p) || IsHandshake(client_p)) | |
2052 | { | |
212380e3 AC |
2053 | if(error == 0) |
2054 | { | |
2055 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2056 | "Server %s closed the connection", | |
b3ebc7ab | 2057 | client_p->name); |
212380e3 AC |
2058 | |
2059 | ilog(L_SERVER, "Server %s closed the connection", | |
2060 | log_client_name(client_p, SHOW_IP)); | |
2061 | } | |
2062 | else | |
2063 | { | |
2064 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2065 | "Lost connection to %s: %s", | |
2066 | client_p->name, strerror(current_error)); | |
2067 | ilog(L_SERVER, "Lost connection to %s: %s", | |
2068 | log_client_name(client_p, SHOW_IP), strerror(current_error)); | |
2069 | } | |
212380e3 AC |
2070 | } |
2071 | ||
2072 | if(error == 0) | |
f427c8b0 | 2073 | rb_strlcpy(errmsg, "Remote host closed the connection", sizeof(errmsg)); |
212380e3 | 2074 | else |
5203cba5 | 2075 | snprintf(errmsg, sizeof(errmsg), "Read error: %s", strerror(current_error)); |
212380e3 AC |
2076 | |
2077 | exit_client(client_p, client_p, &me, errmsg); | |
2078 | } |