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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" | |
35 | #include "s_auth.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" | |
50 | #include "blacklist.h" | |
54015b5f | 51 | #include "reject.h" |
994544c2 | 52 | #include "scache.h" |
a4bf26dd | 53 | #include "rb_dictionary.h" |
c6d72037 | 54 | #include "sslproc.h" |
77d3d2db | 55 | #include "s_assert.h" |
212380e3 AC |
56 | |
57 | #define DEBUG_EXITED_CLIENTS | |
58 | ||
330fc5c1 AC |
59 | static void check_pings_list(rb_dlink_list * list); |
60 | static void check_unknowns_list(rb_dlink_list * list); | |
212380e3 AC |
61 | static void free_exited_clients(void *unused); |
62 | static void exit_aborted_clients(void *unused); | |
63 | ||
64 | static int exit_remote_client(struct Client *, struct Client *, struct Client *,const char *); | |
65 | static int exit_remote_server(struct Client *, struct Client *, struct Client *,const char *); | |
66 | static int exit_local_client(struct Client *, struct Client *, struct Client *,const char *); | |
67 | static int exit_unknown_client(struct Client *, struct Client *, struct Client *,const char *); | |
68 | static int exit_local_server(struct Client *, struct Client *, struct Client *,const char *); | |
69 | static int qs_server(struct Client *, struct Client *, struct Client *, const char *comment); | |
70 | ||
71 | static EVH check_pings; | |
72 | ||
5433b83e VY |
73 | static rb_bh *client_heap = NULL; |
74 | static rb_bh *lclient_heap = NULL; | |
b09cbaa3 | 75 | static rb_bh *pclient_heap = NULL; |
5433b83e | 76 | static rb_bh *user_heap = NULL; |
c127b45b | 77 | static rb_bh *away_heap = NULL; |
5433b83e | 78 | static char current_uid[IDLEN]; |
b5b4a0e7 | 79 | static int32_t current_connid = 0; |
212380e3 | 80 | |
4177311e | 81 | rb_dictionary *nd_dict = NULL; |
43de0f45 | 82 | |
212380e3 AC |
83 | enum |
84 | { | |
85 | D_LINED, | |
aae358c0 | 86 | K_LINED |
212380e3 AC |
87 | }; |
88 | ||
330fc5c1 | 89 | rb_dlink_list dead_list; |
212380e3 | 90 | #ifdef DEBUG_EXITED_CLIENTS |
330fc5c1 | 91 | static rb_dlink_list dead_remote_list; |
212380e3 AC |
92 | #endif |
93 | ||
94 | struct abort_client | |
95 | { | |
330fc5c1 | 96 | rb_dlink_node node; |
212380e3 AC |
97 | struct Client *client; |
98 | char notice[REASONLEN]; | |
99 | }; | |
100 | ||
330fc5c1 | 101 | static rb_dlink_list abort_list; |
212380e3 AC |
102 | |
103 | ||
104 | /* | |
105 | * init_client | |
106 | * | |
107 | * inputs - NONE | |
108 | * output - NONE | |
109 | * side effects - initialize client free memory | |
110 | */ | |
111 | void | |
112 | init_client(void) | |
113 | { | |
114 | /* | |
115 | * start off the check ping event .. -- adrian | |
116 | * Every 30 seconds is plenty -- db | |
117 | */ | |
1087485c | 118 | client_heap = rb_bh_create(sizeof(struct Client), CLIENT_HEAP_SIZE, "client_heap"); |
adc6cc42 VY |
119 | lclient_heap = rb_bh_create(sizeof(struct LocalUser), LCLIENT_HEAP_SIZE, "lclient_heap"); |
120 | pclient_heap = rb_bh_create(sizeof(struct PreClient), PCLIENT_HEAP_SIZE, "pclient_heap"); | |
b09cbaa3 | 121 | user_heap = rb_bh_create(sizeof(struct User), USER_HEAP_SIZE, "user_heap"); |
c127b45b | 122 | away_heap = rb_bh_create(AWAYLEN, AWAY_HEAP_SIZE, "away_heap"); |
adc6cc42 | 123 | |
3b2ebd04 JT |
124 | rb_event_addish("check_pings", check_pings, NULL, 30); |
125 | rb_event_addish("free_exited_clients", &free_exited_clients, NULL, 4); | |
126 | rb_event_addish("exit_aborted_clients", exit_aborted_clients, NULL, 1); | |
5a606a8f | 127 | rb_event_add("flood_recalc", flood_recalc, NULL, 1); |
43de0f45 | 128 | |
a4bf26dd | 129 | nd_dict = rb_dictionary_create("nickdelay", irccmp); |
212380e3 AC |
130 | } |
131 | ||
132 | ||
133 | /* | |
134 | * make_client - create a new Client struct and set it to initial state. | |
135 | * | |
136 | * from == NULL, create local client (a client connected | |
137 | * to a socket). | |
138 | * | |
139 | * from, create remote client (behind a socket | |
140 | * associated with the client defined by | |
141 | * 'from'). ('from' is a local client!!). | |
142 | */ | |
143 | struct Client * | |
144 | make_client(struct Client *from) | |
145 | { | |
146 | struct Client *client_p = NULL; | |
147 | struct LocalUser *localClient; | |
148 | ||
398b6a73 | 149 | client_p = rb_bh_alloc(client_heap); |
212380e3 AC |
150 | |
151 | if(from == NULL) | |
152 | { | |
153 | client_p->from = client_p; /* 'from' of local client is self! */ | |
154 | ||
b09cbaa3 | 155 | localClient = rb_bh_alloc(lclient_heap); |
212380e3 AC |
156 | SetMyConnect(client_p); |
157 | client_p->localClient = localClient; | |
158 | ||
e3354945 | 159 | client_p->localClient->lasttime = client_p->localClient->firsttime = rb_current_time(); |
212380e3 | 160 | |
c5c2f506 | 161 | client_p->localClient->F = NULL; |
212380e3 | 162 | |
b5b4a0e7 AC |
163 | if(current_connid+1 == 0) |
164 | current_connid++; | |
165 | ||
166 | client_p->localClient->connid = ++current_connid; | |
167 | ||
168 | if(current_connid+1 == 0) | |
169 | current_connid++; | |
170 | ||
171 | client_p->localClient->zconnid = ++current_connid; | |
172 | add_to_cli_connid_hash(client_p); | |
173 | ||
5ef68b13 | 174 | client_p->preClient = rb_bh_alloc(pclient_heap); |
212380e3 AC |
175 | |
176 | /* as good a place as any... */ | |
330fc5c1 | 177 | rb_dlinkAdd(client_p, &client_p->localClient->tnode, &unknown_list); |
212380e3 AC |
178 | } |
179 | else | |
180 | { /* from is not NULL */ | |
181 | client_p->localClient = NULL; | |
182 | client_p->preClient = NULL; | |
183 | client_p->from = from; /* 'from' of local client is self! */ | |
184 | } | |
55abcbb2 | 185 | |
212380e3 AC |
186 | SetUnknown(client_p); |
187 | strcpy(client_p->username, "unknown"); | |
188 | ||
189 | return client_p; | |
190 | } | |
191 | ||
192 | void | |
193 | free_pre_client(struct Client *client_p) | |
194 | { | |
195 | struct Blacklist *blptr; | |
196 | ||
197 | s_assert(NULL != client_p); | |
198 | ||
199 | if(client_p->preClient == NULL) | |
200 | return; | |
201 | ||
202 | blptr = client_p->preClient->dnsbl_listed; | |
203 | if (blptr != NULL) | |
204 | unref_blacklist(blptr); | |
7fc09bc4 KB |
205 | s_assert(rb_dlink_list_length(&client_p->preClient->dnsbl_queries) == 0); |
206 | ||
398b6a73 | 207 | rb_bh_free(pclient_heap, client_p->preClient); |
212380e3 AC |
208 | client_p->preClient = NULL; |
209 | } | |
210 | ||
211 | static void | |
212 | free_local_client(struct Client *client_p) | |
213 | { | |
214 | s_assert(NULL != client_p); | |
215 | s_assert(&me != client_p); | |
216 | ||
217 | if(client_p->localClient == NULL) | |
218 | return; | |
219 | ||
220 | /* | |
221 | * clean up extra sockets from P-lines which have been discarded. | |
222 | */ | |
223 | if(client_p->localClient->listener) | |
224 | { | |
225 | s_assert(0 < client_p->localClient->listener->ref_count); | |
226 | if(0 == --client_p->localClient->listener->ref_count | |
227 | && !client_p->localClient->listener->active) | |
228 | free_listener(client_p->localClient->listener); | |
229 | client_p->localClient->listener = 0; | |
230 | } | |
231 | ||
b5b4a0e7 | 232 | del_from_cli_connid_hash(client_p); |
c6d72037 VY |
233 | if(client_p->localClient->F != NULL) |
234 | { | |
3b2ebd04 | 235 | rb_close(client_p->localClient->F); |
c6d72037 | 236 | } |
212380e3 AC |
237 | |
238 | if(client_p->localClient->passwd) | |
239 | { | |
240 | memset(client_p->localClient->passwd, 0, | |
241 | strlen(client_p->localClient->passwd)); | |
637c4932 | 242 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
243 | } |
244 | ||
90afc118 | 245 | rb_free(client_p->localClient->auth_user); |
637c4932 VY |
246 | rb_free(client_p->localClient->challenge); |
247 | rb_free(client_p->localClient->fullcaps); | |
248 | rb_free(client_p->localClient->opername); | |
249 | rb_free(client_p->localClient->mangledhost); | |
0e52d0d4 JT |
250 | if (client_p->localClient->privset) |
251 | privilegeset_unref(client_p->localClient->privset); | |
212380e3 | 252 | |
a4165b42 AS |
253 | if(IsSSL(client_p)) |
254 | ssld_decrement_clicount(client_p->localClient->ssl_ctl); | |
55abcbb2 | 255 | |
a4165b42 AS |
256 | if(IsCapable(client_p, CAP_ZIP)) |
257 | ssld_decrement_clicount(client_p->localClient->z_ctl); | |
c6d72037 | 258 | |
398b6a73 | 259 | rb_bh_free(lclient_heap, client_p->localClient); |
212380e3 AC |
260 | client_p->localClient = NULL; |
261 | } | |
262 | ||
263 | void | |
264 | free_client(struct Client *client_p) | |
265 | { | |
266 | s_assert(NULL != client_p); | |
267 | s_assert(&me != client_p); | |
268 | free_local_client(client_p); | |
269 | free_pre_client(client_p); | |
8eda114a | 270 | rb_free(client_p->certfp); |
398b6a73 | 271 | rb_bh_free(client_heap, client_p); |
212380e3 AC |
272 | } |
273 | ||
274 | /* | |
275 | * check_pings - go through the local client list and check activity | |
276 | * kill off stuff that should die | |
277 | * | |
278 | * inputs - NOT USED (from event) | |
279 | * output - next time_t when check_pings() should be called again | |
55abcbb2 | 280 | * side effects - |
212380e3 AC |
281 | * |
282 | * | |
283 | * A PING can be sent to clients as necessary. | |
284 | * | |
285 | * Client/Server ping outs are handled. | |
286 | */ | |
287 | ||
288 | /* | |
289 | * Addon from adrian. We used to call this after nextping seconds, | |
290 | * however I've changed it to run once a second. This is only for | |
291 | * PING timeouts, not K/etc-line checks (thanks dianora!). Having it | |
292 | * run once a second makes life a lot easier - when a new client connects | |
293 | * and they need a ping in 4 seconds, if nextping was set to 20 seconds | |
294 | * we end up waiting 20 seconds. This is stupid. :-) | |
295 | * I will optimise (hah!) check_pings() once I've finished working on | |
296 | * tidying up other network IO evilnesses. | |
297 | * -- adrian | |
298 | */ | |
299 | ||
300 | static void | |
301 | check_pings(void *notused) | |
302 | { | |
303 | check_pings_list(&lclient_list); | |
304 | check_pings_list(&serv_list); | |
305 | check_unknowns_list(&unknown_list); | |
306 | } | |
307 | ||
308 | /* | |
309 | * Check_pings_list() | |
310 | * | |
311 | * inputs - pointer to list to check | |
312 | * output - NONE | |
55abcbb2 | 313 | * side effects - |
212380e3 AC |
314 | */ |
315 | static void | |
330fc5c1 | 316 | check_pings_list(rb_dlink_list * list) |
212380e3 AC |
317 | { |
318 | char scratch[32]; /* way too generous but... */ | |
319 | struct Client *client_p; /* current local client_p being examined */ | |
320 | int ping = 0; /* ping time value from client */ | |
637c4932 | 321 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 322 | |
637c4932 | 323 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
324 | { |
325 | client_p = ptr->data; | |
326 | ||
212380e3 AC |
327 | if(!MyConnect(client_p) || IsDead(client_p)) |
328 | continue; | |
329 | ||
e2a98043 | 330 | ping = get_client_ping(client_p); |
212380e3 | 331 | |
e3354945 | 332 | if(ping < (rb_current_time() - client_p->localClient->lasttime)) |
212380e3 AC |
333 | { |
334 | /* | |
335 | * If the client/server hasnt talked to us in 2*ping seconds | |
336 | * and it has a ping time, then close its connection. | |
337 | */ | |
e3354945 | 338 | if(((rb_current_time() - client_p->localClient->lasttime) >= (2 * ping) |
212380e3 AC |
339 | && (client_p->flags & FLAGS_PINGSENT))) |
340 | { | |
e2a98043 | 341 | if(IsServer(client_p)) |
212380e3 | 342 | { |
e2a98043 | 343 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 | 344 | "No response from %s, closing link", |
b3ebc7ab | 345 | client_p->name); |
212380e3 AC |
346 | ilog(L_SERVER, |
347 | "No response from %s, closing link", | |
348 | log_client_name(client_p, HIDE_IP)); | |
349 | } | |
5203cba5 | 350 | (void) snprintf(scratch, sizeof(scratch), |
212380e3 | 351 | "Ping timeout: %d seconds", |
e3354945 | 352 | (int) (rb_current_time() - client_p->localClient->lasttime)); |
212380e3 AC |
353 | |
354 | exit_client(client_p, client_p, &me, scratch); | |
355 | continue; | |
356 | } | |
357 | else if((client_p->flags & FLAGS_PINGSENT) == 0) | |
358 | { | |
359 | /* | |
360 | * if we havent PINGed the connection and we havent | |
361 | * heard from it in a while, PING it to make sure | |
362 | * it is still alive. | |
363 | */ | |
364 | client_p->flags |= FLAGS_PINGSENT; | |
365 | /* not nice but does the job */ | |
e3354945 | 366 | client_p->localClient->lasttime = rb_current_time() - ping; |
212380e3 AC |
367 | sendto_one(client_p, "PING :%s", me.name); |
368 | } | |
369 | } | |
370 | /* ping_timeout: */ | |
371 | ||
372 | } | |
373 | } | |
374 | ||
375 | /* | |
376 | * check_unknowns_list | |
377 | * | |
378 | * inputs - pointer to list of unknown clients | |
379 | * output - NONE | |
380 | * side effects - unknown clients get marked for termination after n seconds | |
381 | */ | |
382 | static void | |
330fc5c1 | 383 | check_unknowns_list(rb_dlink_list * list) |
212380e3 | 384 | { |
637c4932 | 385 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 386 | struct Client *client_p; |
35cf4c79 | 387 | int timeout; |
212380e3 | 388 | |
637c4932 | 389 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
390 | { |
391 | client_p = ptr->data; | |
392 | ||
393 | if(IsDead(client_p) || IsClosing(client_p)) | |
394 | continue; | |
395 | ||
6bb4fb83 JT |
396 | /* still has DNSbls to validate against */ |
397 | if(client_p->preClient != NULL && | |
398 | rb_dlink_list_length(&client_p->preClient->dnsbl_queries) > 0) | |
399 | continue; | |
400 | ||
212380e3 AC |
401 | /* |
402 | * Check UNKNOWN connections - if they have been in this state | |
403 | * for > 30s, close them. | |
404 | */ | |
405 | ||
35cf4c79 | 406 | timeout = IsAnyServer(client_p) ? ConfigFileEntry.connect_timeout : 30; |
e3354945 | 407 | if((rb_current_time() - client_p->localClient->firsttime) > timeout) |
35cf4c79 JT |
408 | { |
409 | if(IsAnyServer(client_p)) | |
410 | { | |
411 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
412 | "No response from %s, closing link", | |
b3ebc7ab | 413 | client_p->name); |
35cf4c79 JT |
414 | ilog(L_SERVER, |
415 | "No response from %s, closing link", | |
416 | log_client_name(client_p, HIDE_IP)); | |
417 | } | |
212380e3 | 418 | exit_client(client_p, client_p, &me, "Connection timed out"); |
35cf4c79 | 419 | } |
212380e3 AC |
420 | } |
421 | } | |
422 | ||
423 | static void | |
424 | notify_banned_client(struct Client *client_p, struct ConfItem *aconf, int ban) | |
425 | { | |
426 | static const char conn_closed[] = "Connection closed"; | |
427 | static const char d_lined[] = "D-lined"; | |
428 | static const char k_lined[] = "K-lined"; | |
212380e3 AC |
429 | const char *reason = NULL; |
430 | const char *exit_reason = conn_closed; | |
431 | ||
a12ad044 | 432 | if(ConfigFileEntry.kline_with_reason) |
212380e3 | 433 | { |
a12ad044 | 434 | reason = get_user_ban_reason(aconf); |
b52c2949 | 435 | exit_reason = reason; |
212380e3 AC |
436 | } |
437 | else | |
438 | { | |
405ae5ce | 439 | reason = aconf->status == D_LINED ? d_lined : k_lined; |
212380e3 AC |
440 | } |
441 | ||
442 | if(ban == D_LINED && !IsPerson(client_p)) | |
443 | sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined"); | |
444 | else | |
445 | sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP), | |
446 | me.name, client_p->name, reason); | |
55abcbb2 KB |
447 | |
448 | exit_client(client_p, client_p, &me, | |
212380e3 AC |
449 | EmptyString(ConfigFileEntry.kline_reason) ? exit_reason : |
450 | ConfigFileEntry.kline_reason); | |
451 | } | |
452 | ||
453 | /* | |
454 | * check_banned_lines | |
455 | * inputs - NONE | |
456 | * output - NONE | |
170703fe | 457 | * side effects - Check all connections for a pending k/dline against the |
212380e3 AC |
458 | * client, exit the client if found. |
459 | */ | |
460 | void | |
461 | check_banned_lines(void) | |
462 | { | |
1bb1f1b0 JT |
463 | check_dlines(); |
464 | check_klines(); | |
465 | check_xlines(); | |
212380e3 AC |
466 | } |
467 | ||
468 | /* check_klines_event() | |
469 | * | |
470 | * inputs - | |
471 | * outputs - | |
472 | * side effects - check_klines() is called, kline_queued unset | |
473 | */ | |
474 | void | |
475 | check_klines_event(void *unused) | |
476 | { | |
f66f0baa | 477 | kline_queued = false; |
212380e3 AC |
478 | check_klines(); |
479 | } | |
480 | ||
481 | /* check_klines | |
482 | * | |
483 | * inputs - | |
484 | * outputs - | |
485 | * side effects - all clients will be checked for klines | |
486 | */ | |
487 | void | |
488 | check_klines(void) | |
489 | { | |
490 | struct Client *client_p; | |
491 | struct ConfItem *aconf; | |
330fc5c1 | 492 | rb_dlink_node *ptr; |
637c4932 | 493 | rb_dlink_node *next_ptr; |
212380e3 | 494 | |
637c4932 | 495 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
496 | { |
497 | client_p = ptr->data; | |
498 | ||
499 | if(IsMe(client_p) || !IsPerson(client_p)) | |
500 | continue; | |
501 | ||
502 | if((aconf = find_kline(client_p)) != NULL) | |
503 | { | |
504 | if(IsExemptKline(client_p)) | |
505 | { | |
506 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
408024fa JT |
507 | "KLINE over-ruled for %s, client is kline_exempt [%s@%s]", |
508 | get_client_name(client_p, HIDE_IP), | |
509 | aconf->user, aconf->host); | |
212380e3 AC |
510 | continue; |
511 | } | |
512 | ||
513 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
514 | "KLINE active for %s", | |
515 | get_client_name(client_p, HIDE_IP)); | |
516 | ||
517 | notify_banned_client(client_p, aconf, K_LINED); | |
518 | continue; | |
519 | } | |
520 | } | |
521 | } | |
522 | ||
212380e3 AC |
523 | /* check_dlines() |
524 | * | |
525 | * inputs - | |
526 | * outputs - | |
527 | * side effects - all clients will be checked for dlines | |
528 | */ | |
529 | void | |
530 | check_dlines(void) | |
531 | { | |
532 | struct Client *client_p; | |
533 | struct ConfItem *aconf; | |
330fc5c1 | 534 | rb_dlink_node *ptr; |
637c4932 | 535 | rb_dlink_node *next_ptr; |
212380e3 | 536 | |
637c4932 | 537 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
538 | { |
539 | client_p = ptr->data; | |
540 | ||
541 | if(IsMe(client_p)) | |
542 | continue; | |
543 | ||
e867208d | 544 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, GET_SS_FAMILY(&client_p->localClient->ip))) != NULL) |
212380e3 AC |
545 | { |
546 | if(aconf->status & CONF_EXEMPTDLINE) | |
547 | continue; | |
548 | ||
549 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
550 | "DLINE active for %s", | |
551 | get_client_name(client_p, HIDE_IP)); | |
552 | ||
553 | notify_banned_client(client_p, aconf, D_LINED); | |
554 | continue; | |
555 | } | |
556 | } | |
557 | ||
558 | /* dlines need to be checked against unknowns too */ | |
637c4932 | 559 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) |
212380e3 AC |
560 | { |
561 | client_p = ptr->data; | |
562 | ||
e867208d | 563 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, GET_SS_FAMILY(&client_p->localClient->ip))) != NULL) |
212380e3 AC |
564 | { |
565 | if(aconf->status & CONF_EXEMPTDLINE) | |
566 | continue; | |
567 | ||
568 | notify_banned_client(client_p, aconf, D_LINED); | |
569 | } | |
570 | } | |
571 | } | |
572 | ||
573 | /* check_xlines | |
574 | * | |
575 | * inputs - | |
576 | * outputs - | |
577 | * side effects - all clients will be checked for xlines | |
578 | */ | |
579 | void | |
580 | check_xlines(void) | |
581 | { | |
582 | struct Client *client_p; | |
583 | struct ConfItem *aconf; | |
330fc5c1 | 584 | rb_dlink_node *ptr; |
637c4932 | 585 | rb_dlink_node *next_ptr; |
212380e3 | 586 | |
637c4932 | 587 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
588 | { |
589 | client_p = ptr->data; | |
590 | ||
591 | if(IsMe(client_p) || !IsPerson(client_p)) | |
592 | continue; | |
593 | ||
594 | if((aconf = find_xline(client_p->info, 1)) != NULL) | |
595 | { | |
596 | if(IsExemptKline(client_p)) | |
597 | { | |
598 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
408024fa JT |
599 | "XLINE over-ruled for %s, client is kline_exempt [%s]", |
600 | get_client_name(client_p, HIDE_IP), | |
70ea02eb | 601 | aconf->host); |
212380e3 AC |
602 | continue; |
603 | } | |
604 | ||
605 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
606 | get_client_name(client_p, HIDE_IP)); | |
607 | ||
608 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
609 | continue; | |
610 | } | |
611 | } | |
612 | } | |
613 | ||
330692a1 KB |
614 | /* resv_nick_fnc |
615 | * | |
616 | * inputs - resv, reason, time | |
617 | * outputs - NONE | |
618 | * side effects - all local clients matching resv will be FNC'd | |
619 | */ | |
620 | void | |
621 | resv_nick_fnc(const char *mask, const char *reason, int temp_time) | |
622 | { | |
623 | struct Client *client_p, *target_p; | |
624 | rb_dlink_node *ptr; | |
625 | rb_dlink_node *next_ptr; | |
626 | char *nick; | |
627 | char note[NICKLEN+10]; | |
628 | ||
629 | if (!ConfigFileEntry.resv_fnc) | |
630 | return; | |
631 | ||
632 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
633 | { | |
634 | client_p = ptr->data; | |
635 | ||
636 | if(IsMe(client_p) || !IsPerson(client_p) || IsExemptResv(client_p)) | |
637 | continue; | |
638 | ||
07d3283f KB |
639 | /* Skip users that already have UID nicks. */ |
640 | if(IsDigit(client_p->name[0])) | |
641 | continue; | |
642 | ||
330692a1 KB |
643 | if(match_esc(mask, client_p->name)) |
644 | { | |
645 | nick = client_p->id; | |
646 | ||
647 | /* Tell opers. */ | |
648 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
649 | "RESV forced nick change for %s!%s@%s to %s; nick matched [%s] (%s)", | |
650 | client_p->name, client_p->username, client_p->host, nick, mask, reason); | |
651 | ||
652 | sendto_realops_snomask(SNO_NCHANGE, L_ALL, | |
653 | "Nick change: From %s to %s [%s@%s]", | |
654 | client_p->name, nick, client_p->username, client_p->host); | |
655 | ||
656 | /* Tell the user. */ | |
657 | if (temp_time > 0) | |
658 | { | |
659 | sendto_one_notice(client_p, | |
660 | ":*** Nick %s is temporarily unavailable on this server.", | |
661 | client_p->name); | |
662 | } | |
663 | else | |
664 | { | |
665 | sendto_one_notice(client_p, | |
666 | ":*** Nick %s is no longer available on this server.", | |
667 | client_p->name); | |
668 | } | |
669 | ||
670 | /* Do all of the nick-changing gymnastics. */ | |
671 | client_p->tsinfo = rb_current_time(); | |
b47f8a4f | 672 | whowas_add_history(client_p, 1); |
330692a1 | 673 | |
07d3283f KB |
674 | monitor_signoff(client_p); |
675 | ||
330692a1 KB |
676 | invalidate_bancache_user(client_p); |
677 | ||
583f064f | 678 | sendto_common_channels_local(client_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s", |
330692a1 KB |
679 | client_p->name, client_p->username, client_p->host, nick); |
680 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
681 | use_id(client_p), nick, (long) client_p->tsinfo); | |
682 | ||
683 | del_from_client_hash(client_p->name, client_p); | |
684 | rb_strlcpy(client_p->name, nick, sizeof(client_p->name)); | |
685 | add_to_client_hash(nick, client_p); | |
686 | ||
07d3283f KB |
687 | monitor_signon(client_p); |
688 | ||
330692a1 KB |
689 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) |
690 | { | |
691 | target_p = ptr->data; | |
692 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); | |
693 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
694 | } | |
695 | ||
5203cba5 | 696 | snprintf(note, sizeof(note), "Nick: %s", nick); |
330692a1 KB |
697 | rb_note(client_p->localClient->F, note); |
698 | } | |
699 | } | |
700 | } | |
701 | ||
212380e3 AC |
702 | /* |
703 | * update_client_exit_stats | |
704 | * | |
705 | * input - pointer to client | |
706 | * output - NONE | |
55abcbb2 | 707 | * side effects - |
212380e3 AC |
708 | */ |
709 | static void | |
710 | update_client_exit_stats(struct Client *client_p) | |
711 | { | |
712 | if(IsServer(client_p)) | |
713 | { | |
714 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
715 | "Server %s split from %s", | |
716 | client_p->name, client_p->servptr->name); | |
717 | if(HasSentEob(client_p)) | |
718 | eob_count--; | |
719 | } | |
720 | else if(IsClient(client_p)) | |
721 | { | |
722 | --Count.total; | |
723 | if(IsOper(client_p)) | |
724 | --Count.oper; | |
725 | if(IsInvisible(client_p)) | |
726 | --Count.invisi; | |
727 | } | |
728 | ||
729 | if(splitchecking && !splitmode) | |
730 | check_splitmode(NULL); | |
731 | } | |
732 | ||
733 | /* | |
734 | * release_client_state | |
735 | * | |
736 | * input - pointer to client to release | |
737 | * output - NONE | |
55abcbb2 | 738 | * side effects - |
212380e3 AC |
739 | */ |
740 | static void | |
741 | release_client_state(struct Client *client_p) | |
742 | { | |
743 | if(client_p->user != NULL) | |
744 | { | |
745 | free_user(client_p->user, client_p); /* try this here */ | |
746 | } | |
747 | if(client_p->serv) | |
748 | { | |
749 | if(client_p->serv->user != NULL) | |
750 | free_user(client_p->serv->user, client_p); | |
751 | if(client_p->serv->fullcaps) | |
637c4932 VY |
752 | rb_free(client_p->serv->fullcaps); |
753 | rb_free(client_p->serv); | |
212380e3 AC |
754 | } |
755 | } | |
756 | ||
757 | /* | |
758 | * remove_client_from_list | |
759 | * inputs - point to client to remove | |
760 | * output - NONE | |
761 | * side effects - taken the code from ExitOneClient() for this | |
762 | * and placed it here. - avalon | |
763 | */ | |
764 | static void | |
765 | remove_client_from_list(struct Client *client_p) | |
766 | { | |
767 | s_assert(NULL != client_p); | |
768 | ||
769 | if(client_p == NULL) | |
770 | return; | |
771 | ||
772 | /* A client made with make_client() | |
773 | * is on the unknown_list until removed. | |
774 | * If it =does= happen to exit before its removed from that list | |
775 | * and its =not= on the global_client_list, it will core here. | |
776 | * short circuit that case now -db | |
777 | */ | |
778 | if(client_p->node.prev == NULL && client_p->node.next == NULL) | |
779 | return; | |
780 | ||
330fc5c1 | 781 | rb_dlinkDelete(&client_p->node, &global_client_list); |
212380e3 AC |
782 | |
783 | update_client_exit_stats(client_p); | |
784 | } | |
785 | ||
786 | ||
2d28539c JT |
787 | /* clean_nick() |
788 | * | |
789 | * input - nickname to check, flag for nick from local client | |
790 | * output - 0 if erroneous, else 1 | |
791 | * side effects - | |
792 | */ | |
793 | int | |
794 | clean_nick(const char *nick, int loc_client) | |
795 | { | |
796 | int len = 0; | |
797 | ||
798 | /* nicks cant start with a digit or -, and must have a length */ | |
799 | if(*nick == '-' || *nick == '\0') | |
800 | return 0; | |
801 | ||
802 | if(loc_client && IsDigit(*nick)) | |
803 | return 0; | |
804 | ||
805 | for(; *nick; nick++) | |
806 | { | |
807 | len++; | |
808 | if(!IsNickChar(*nick)) | |
809 | return 0; | |
810 | } | |
811 | ||
812 | /* nicklen is +1 */ | |
813 | if(len >= NICKLEN && (unsigned int)len >= ConfigFileEntry.nicklen) | |
814 | return 0; | |
815 | ||
816 | return 1; | |
817 | } | |
818 | ||
212380e3 AC |
819 | /* |
820 | * find_person - find person by (nick)name. | |
821 | * inputs - pointer to name | |
822 | * output - return client pointer | |
823 | * side effects - | |
824 | */ | |
825 | struct Client * | |
826 | find_person(const char *name) | |
827 | { | |
828 | struct Client *c2ptr; | |
829 | ||
830 | c2ptr = find_client(name); | |
831 | ||
832 | if(c2ptr && IsPerson(c2ptr)) | |
833 | return (c2ptr); | |
834 | return (NULL); | |
835 | } | |
836 | ||
837 | struct Client * | |
838 | find_named_person(const char *name) | |
839 | { | |
840 | struct Client *c2ptr; | |
841 | ||
842 | c2ptr = find_named_client(name); | |
843 | ||
844 | if(c2ptr && IsPerson(c2ptr)) | |
845 | return (c2ptr); | |
846 | return (NULL); | |
847 | } | |
848 | ||
849 | ||
850 | /* | |
55abcbb2 KB |
851 | * find_chasing - find the client structure for a nick name (user) |
852 | * using history mechanism if necessary. If the client is not found, | |
212380e3 AC |
853 | * an error message (NO SUCH NICK) is generated. If the client was found |
854 | * through the history, chasing will be 1 and otherwise 0. | |
855 | */ | |
856 | struct Client * | |
857 | find_chasing(struct Client *source_p, const char *user, int *chasing) | |
858 | { | |
859 | struct Client *who; | |
860 | ||
861 | if(MyClient(source_p)) | |
862 | who = find_named_person(user); | |
863 | else | |
864 | who = find_person(user); | |
865 | ||
866 | if(chasing) | |
867 | *chasing = 0; | |
868 | ||
869 | if(who || IsDigit(*user)) | |
870 | return who; | |
871 | ||
b47f8a4f | 872 | if(!(who = whowas_get_history(user, (long) KILLCHASETIMELIMIT))) |
212380e3 AC |
873 | { |
874 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
875 | form_str(ERR_NOSUCHNICK), user); | |
876 | return (NULL); | |
877 | } | |
878 | if(chasing) | |
879 | *chasing = 1; | |
880 | return who; | |
881 | } | |
882 | ||
883 | /* | |
884 | * get_client_name - Return the name of the client | |
885 | * for various tracking and | |
886 | * admin purposes. The main purpose of this function is to | |
887 | * return the "socket host" name of the client, if that | |
888 | * differs from the advertised name (other than case). | |
889 | * But, this can be used to any client structure. | |
890 | * | |
891 | * NOTE 1: | |
892 | * Watch out the allocation of "nbuf", if either source_p->name | |
893 | * or source_p->sockhost gets changed into pointers instead of | |
894 | * directly allocated within the structure... | |
895 | * | |
896 | * NOTE 2: | |
897 | * Function return either a pointer to the structure (source_p) or | |
898 | * to internal buffer (nbuf). *NEVER* use the returned pointer | |
899 | * to modify what it points!!! | |
900 | */ | |
901 | ||
902 | const char * | |
903 | get_client_name(struct Client *client, int showip) | |
904 | { | |
905 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
906 | ||
907 | s_assert(NULL != client); | |
908 | if(client == NULL) | |
909 | return NULL; | |
910 | ||
911 | if(MyConnect(client)) | |
912 | { | |
913 | if(!irccmp(client->name, client->host)) | |
914 | return client->name; | |
915 | ||
55abcbb2 | 916 | if(ConfigFileEntry.hide_spoof_ips && |
212380e3 AC |
917 | showip == SHOW_IP && IsIPSpoof(client)) |
918 | showip = MASK_IP; | |
212380e3 AC |
919 | if(IsAnyServer(client)) |
920 | showip = MASK_IP; | |
212380e3 AC |
921 | |
922 | /* And finally, let's get the host information, ip or name */ | |
923 | switch (showip) | |
924 | { | |
925 | case SHOW_IP: | |
5203cba5 | 926 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", |
55abcbb2 | 927 | client->name, client->username, |
212380e3 AC |
928 | client->sockhost); |
929 | break; | |
930 | case MASK_IP: | |
5203cba5 | 931 | snprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", |
212380e3 AC |
932 | client->name, client->username); |
933 | break; | |
934 | default: | |
5203cba5 | 935 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", |
212380e3 AC |
936 | client->name, client->username, client->host); |
937 | } | |
938 | return nbuf; | |
939 | } | |
940 | ||
55abcbb2 | 941 | /* As pointed out by Adel Mezibra |
212380e3 AC |
942 | * Neph|l|m@EFnet. Was missing a return here. |
943 | */ | |
944 | return client->name; | |
945 | } | |
55abcbb2 | 946 | |
212380e3 AC |
947 | /* log_client_name() |
948 | * | |
949 | * This version is the same as get_client_name, but doesnt contain the | |
950 | * code that will hide IPs always. This should be used for logfiles. | |
951 | */ | |
952 | const char * | |
953 | log_client_name(struct Client *target_p, int showip) | |
954 | { | |
955 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
956 | ||
957 | if(target_p == NULL) | |
958 | return NULL; | |
959 | ||
960 | if(MyConnect(target_p)) | |
961 | { | |
962 | if(irccmp(target_p->name, target_p->host) == 0) | |
963 | return target_p->name; | |
964 | ||
965 | switch (showip) | |
966 | { | |
967 | case SHOW_IP: | |
5203cba5 | 968 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, |
212380e3 AC |
969 | target_p->username, target_p->sockhost); |
970 | break; | |
971 | ||
212380e3 | 972 | default: |
5203cba5 | 973 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, |
212380e3 AC |
974 | target_p->username, target_p->host); |
975 | } | |
976 | ||
977 | return nbuf; | |
978 | } | |
979 | ||
980 | return target_p->name; | |
981 | } | |
982 | ||
983 | /* is_remote_connect - Returns whether a server was /connect'ed by a remote | |
984 | * oper (send notices netwide) */ | |
985 | int | |
986 | is_remote_connect(struct Client *client_p) | |
987 | { | |
988 | struct Client *oper; | |
989 | ||
990 | if (client_p->serv == NULL) | |
991 | return FALSE; | |
992 | oper = find_named_person(client_p->serv->by); | |
993 | return oper != NULL && IsOper(oper) && !MyConnect(oper); | |
994 | } | |
995 | ||
996 | static void | |
997 | free_exited_clients(void *unused) | |
998 | { | |
330fc5c1 | 999 | rb_dlink_node *ptr, *next; |
212380e3 AC |
1000 | struct Client *target_p; |
1001 | ||
5cefa1d6 | 1002 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_list.head) |
212380e3 AC |
1003 | { |
1004 | target_p = ptr->data; | |
1005 | ||
1006 | #ifdef DEBUG_EXITED_CLIENTS | |
1007 | { | |
1008 | struct abort_client *abt; | |
330fc5c1 | 1009 | rb_dlink_node *aptr; |
212380e3 AC |
1010 | int found = 0; |
1011 | ||
5cefa1d6 | 1012 | RB_DLINK_FOREACH(aptr, abort_list.head) |
212380e3 AC |
1013 | { |
1014 | abt = aptr->data; | |
1015 | if(abt->client == target_p) | |
1016 | { | |
1017 | s_assert(0); | |
55abcbb2 | 1018 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 AC |
1019 | "On abort_list: %s stat: %u flags: %u/%u handler: %c", |
1020 | target_p->name, (unsigned int) target_p->status, | |
1021 | target_p->flags, target_p->flags2, target_p->handler); | |
1022 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1023 | "Please report this to the charybdis developers!"); |
212380e3 AC |
1024 | found++; |
1025 | } | |
1026 | } | |
1027 | ||
1028 | if(found) | |
1029 | { | |
330fc5c1 | 1030 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1031 | continue; |
1032 | } | |
1033 | } | |
1034 | #endif | |
1035 | ||
1036 | if(ptr->data == NULL) | |
1037 | { | |
1038 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1039 | "Warning: null client on dead_list!"); | |
330fc5c1 | 1040 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1041 | continue; |
1042 | } | |
1043 | release_client_state(target_p); | |
1044 | free_client(target_p); | |
330fc5c1 | 1045 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1046 | } |
1047 | ||
1048 | #ifdef DEBUG_EXITED_CLIENTS | |
5cefa1d6 | 1049 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_remote_list.head) |
212380e3 AC |
1050 | { |
1051 | target_p = ptr->data; | |
1052 | ||
1053 | if(ptr->data == NULL) | |
1054 | { | |
1055 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1056 | "Warning: null client on dead_list!"); | |
330fc5c1 | 1057 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1058 | continue; |
1059 | } | |
1060 | release_client_state(target_p); | |
1061 | free_client(target_p); | |
330fc5c1 | 1062 | rb_dlinkDestroy(ptr, &dead_remote_list); |
212380e3 AC |
1063 | } |
1064 | #endif | |
55abcbb2 | 1065 | |
212380e3 AC |
1066 | } |
1067 | ||
55abcbb2 | 1068 | /* |
212380e3 | 1069 | ** Remove all clients that depend on source_p; assumes all (S)QUITs have |
55abcbb2 KB |
1070 | ** already been sent. we make sure to exit a server's dependent clients |
1071 | ** and servers before the server itself; exit_one_client takes care of | |
212380e3 | 1072 | ** actually removing things off llists. tweaked from +CSr31 -orabidoo |
cbeab4bc | 1073 | */ |
212380e3 AC |
1074 | /* |
1075 | * added sanity test code.... source_p->serv might be NULL... | |
1076 | */ | |
1077 | static void | |
1078 | recurse_remove_clients(struct Client *source_p, const char *comment) | |
1079 | { | |
1080 | struct Client *target_p; | |
330fc5c1 | 1081 | rb_dlink_node *ptr, *ptr_next; |
212380e3 AC |
1082 | |
1083 | if(IsMe(source_p)) | |
1084 | return; | |
1085 | ||
1086 | if(source_p->serv == NULL) /* oooops. uh this is actually a major bug */ | |
1087 | return; | |
1088 | ||
1089 | /* this is very ugly, but it saves cpu :P */ | |
1090 | if(ConfigFileEntry.nick_delay > 0) | |
1091 | { | |
5cefa1d6 | 1092 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) |
212380e3 AC |
1093 | { |
1094 | target_p = ptr->data; | |
1095 | target_p->flags |= FLAGS_KILLED; | |
1096 | add_nd_entry(target_p->name); | |
1097 | ||
1098 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1099 | exit_remote_client(NULL, target_p, &me, comment); | |
1100 | } | |
1101 | } | |
1102 | else | |
1103 | { | |
5cefa1d6 | 1104 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) |
212380e3 AC |
1105 | { |
1106 | target_p = ptr->data; | |
1107 | target_p->flags |= FLAGS_KILLED; | |
1108 | ||
1109 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1110 | exit_remote_client(NULL, target_p, &me, comment); | |
1111 | } | |
55abcbb2 | 1112 | } |
212380e3 | 1113 | |
5cefa1d6 | 1114 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) |
212380e3 AC |
1115 | { |
1116 | target_p = ptr->data; | |
1117 | recurse_remove_clients(target_p, comment); | |
1118 | qs_server(NULL, target_p, &me, comment); | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | /* | |
1123 | ** Remove *everything* that depends on source_p, from all lists, and sending | |
856df9a3 | 1124 | ** all necessary SQUITs. source_p itself is still on the lists, |
212380e3 | 1125 | ** and its SQUITs have been sent except for the upstream one -orabidoo |
cbeab4bc | 1126 | */ |
212380e3 AC |
1127 | static void |
1128 | remove_dependents(struct Client *client_p, | |
1129 | struct Client *source_p, | |
1130 | struct Client *from, const char *comment, const char *comment1) | |
1131 | { | |
1132 | struct Client *to; | |
330fc5c1 | 1133 | rb_dlink_node *ptr, *next; |
212380e3 | 1134 | |
5cefa1d6 | 1135 | RB_DLINK_FOREACH_SAFE(ptr, next, serv_list.head) |
212380e3 AC |
1136 | { |
1137 | to = ptr->data; | |
1138 | ||
856df9a3 | 1139 | if(IsMe(to) || to == source_p->from || to == client_p) |
212380e3 AC |
1140 | continue; |
1141 | ||
856df9a3 | 1142 | sendto_one(to, "SQUIT %s :%s", get_id(source_p, to), comment); |
212380e3 AC |
1143 | } |
1144 | ||
1145 | recurse_remove_clients(source_p, comment1); | |
1146 | } | |
1147 | ||
1148 | void | |
1149 | exit_aborted_clients(void *unused) | |
1150 | { | |
1151 | struct abort_client *abt; | |
330fc5c1 | 1152 | rb_dlink_node *ptr, *next; |
5cefa1d6 | 1153 | RB_DLINK_FOREACH_SAFE(ptr, next, abort_list.head) |
212380e3 AC |
1154 | { |
1155 | abt = ptr->data; | |
1156 | ||
1157 | #ifdef DEBUG_EXITED_CLIENTS | |
1158 | { | |
330fc5c1 | 1159 | if(rb_dlinkFind(abt->client, &dead_list)) |
212380e3 AC |
1160 | { |
1161 | s_assert(0); | |
55abcbb2 | 1162 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 AC |
1163 | "On dead_list: %s stat: %u flags: %u/%u handler: %c", |
1164 | abt->client->name, (unsigned int) abt->client->status, | |
1165 | abt->client->flags, abt->client->flags2, abt->client->handler); | |
1166 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1167 | "Please report this to the charybdis developers!"); |
212380e3 AC |
1168 | continue; |
1169 | } | |
1170 | } | |
1171 | #endif | |
1172 | ||
1173 | s_assert(*((unsigned long*)abt->client) != 0xdeadbeef); /* This is lame but its a debug thing */ | |
330fc5c1 | 1174 | rb_dlinkDelete(ptr, &abort_list); |
212380e3 AC |
1175 | |
1176 | if(IsAnyServer(abt->client)) | |
1177 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1178 | "Closing link to %s: %s", | |
b3ebc7ab | 1179 | abt->client->name, abt->notice); |
212380e3 AC |
1180 | |
1181 | /* its no longer on abort list - we *must* remove | |
1182 | * FLAGS_CLOSING otherwise exit_client() will not run --fl | |
1183 | */ | |
1184 | abt->client->flags &= ~FLAGS_CLOSING; | |
1185 | exit_client(abt->client, abt->client, &me, abt->notice); | |
637c4932 | 1186 | rb_free(abt); |
212380e3 AC |
1187 | } |
1188 | } | |
1189 | ||
1190 | ||
1191 | /* | |
1192 | * dead_link - Adds client to a list of clients that need an exit_client() | |
212380e3 AC |
1193 | */ |
1194 | void | |
cef7a7bc | 1195 | dead_link(struct Client *client_p, int sendqex) |
212380e3 AC |
1196 | { |
1197 | struct abort_client *abt; | |
1198 | ||
1199 | s_assert(!IsMe(client_p)); | |
1200 | if(IsDead(client_p) || IsClosing(client_p) || IsMe(client_p)) | |
1201 | return; | |
1202 | ||
eddc2ab6 | 1203 | abt = (struct abort_client *) rb_malloc(sizeof(struct abort_client)); |
212380e3 | 1204 | |
cef7a7bc | 1205 | if(sendqex) |
f427c8b0 | 1206 | rb_strlcpy(abt->notice, "Max SendQ exceeded", sizeof(abt->notice)); |
212380e3 | 1207 | else |
5203cba5 | 1208 | snprintf(abt->notice, sizeof(abt->notice), "Write error: %s", strerror(errno)); |
212380e3 AC |
1209 | |
1210 | abt->client = client_p; | |
1211 | SetIOError(client_p); | |
1212 | SetDead(client_p); | |
1213 | SetClosing(client_p); | |
330fc5c1 | 1214 | rb_dlinkAdd(abt, &abt->node, &abort_list); |
212380e3 AC |
1215 | } |
1216 | ||
1217 | ||
1218 | /* This does the remove of the user from channels..local or remote */ | |
1219 | static inline void | |
1220 | exit_generic_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1221 | const char *comment) | |
1222 | { | |
637c4932 | 1223 | rb_dlink_node *ptr, *next_ptr; |
212380e3 AC |
1224 | |
1225 | if(IsOper(source_p)) | |
330fc5c1 | 1226 | rb_dlinkFindDestroy(source_p, &oper_list); |
212380e3 | 1227 | |
583f064f | 1228 | sendto_common_channels_local(source_p, NOCAPS, NOCAPS, ":%s!%s@%s QUIT :%s", |
212380e3 AC |
1229 | source_p->name, |
1230 | source_p->username, source_p->host, comment); | |
1231 | ||
1232 | remove_user_from_channels(source_p); | |
1233 | ||
1234 | /* Should not be in any channels now */ | |
1235 | s_assert(source_p->user->channel.head == NULL); | |
1236 | ||
1237 | /* Clean up invitefield */ | |
637c4932 | 1238 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->user->invited.head) |
212380e3 AC |
1239 | { |
1240 | del_invite(ptr->data, source_p); | |
1241 | } | |
1242 | ||
1243 | /* Clean up allow lists */ | |
1244 | del_all_accepts(source_p); | |
1245 | ||
b47f8a4f AC |
1246 | whowas_add_history(source_p, 0); |
1247 | whowas_off_history(source_p); | |
212380e3 AC |
1248 | |
1249 | monitor_signoff(source_p); | |
1250 | ||
1251 | if(has_id(source_p)) | |
1252 | del_from_id_hash(source_p->id, source_p); | |
1253 | ||
1254 | del_from_hostname_hash(source_p->orighost, source_p); | |
1255 | del_from_client_hash(source_p->name, source_p); | |
1256 | remove_client_from_list(source_p); | |
1257 | } | |
1258 | ||
55abcbb2 | 1259 | /* |
212380e3 AC |
1260 | * Assumes IsPerson(source_p) && !MyConnect(source_p) |
1261 | */ | |
1262 | ||
1263 | static int | |
1264 | exit_remote_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1265 | const char *comment) | |
1266 | { | |
1267 | exit_generic_client(client_p, source_p, from, comment); | |
55abcbb2 | 1268 | |
212380e3 AC |
1269 | if(source_p->servptr && source_p->servptr->serv) |
1270 | { | |
330fc5c1 | 1271 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users); |
212380e3 AC |
1272 | } |
1273 | ||
1274 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1275 | { | |
1276 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1277 | ":%s QUIT :%s", use_id(source_p), comment); | |
212380e3 AC |
1278 | } |
1279 | ||
1280 | SetDead(source_p); | |
1281 | #ifdef DEBUG_EXITED_CLIENTS | |
330fc5c1 | 1282 | rb_dlinkAddAlloc(source_p, &dead_remote_list); |
212380e3 | 1283 | #else |
330fc5c1 | 1284 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1285 | #endif |
1286 | return(CLIENT_EXITED); | |
1287 | } | |
1288 | ||
1289 | /* | |
07554369 | 1290 | * This assumes IsUnknown(source_p) == true and MyConnect(source_p) == true |
212380e3 AC |
1291 | */ |
1292 | ||
1293 | static int | |
1294 | exit_unknown_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1295 | const char *comment) | |
1296 | { | |
1297 | delete_auth_queries(source_p); | |
7fc09bc4 | 1298 | abort_blacklist_queries(source_p); |
330fc5c1 | 1299 | rb_dlinkDelete(&source_p->localClient->tnode, &unknown_list); |
212380e3 AC |
1300 | |
1301 | if(!IsIOError(source_p)) | |
dd12a19c JT |
1302 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", |
1303 | source_p->user != NULL ? source_p->host : "127.0.0.1", | |
1304 | comment); | |
212380e3 AC |
1305 | |
1306 | close_connection(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->host, source_p); | |
1312 | del_from_client_hash(source_p->name, source_p); | |
1313 | remove_client_from_list(source_p); | |
212380e3 | 1314 | SetDead(source_p); |
330fc5c1 | 1315 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1316 | |
1317 | /* Note that we don't need to add unknowns to the dead_list */ | |
1318 | return(CLIENT_EXITED); | |
1319 | } | |
1320 | ||
1321 | static int | |
55abcbb2 | 1322 | exit_remote_server(struct Client *client_p, struct Client *source_p, struct Client *from, |
212380e3 AC |
1323 | const char *comment) |
1324 | { | |
1325 | static char comment1[(HOSTLEN*2)+2]; | |
1326 | static char newcomment[BUFSIZE]; | |
1327 | struct Client *target_p; | |
55abcbb2 | 1328 | |
212380e3 AC |
1329 | if(ConfigServerHide.flatten_links) |
1330 | strcpy(comment1, "*.net *.split"); | |
1331 | else | |
1332 | { | |
66c8fdd2 | 1333 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1334 | strcat(comment1, " "); |
1335 | strcat(comment1, source_p->name); | |
1336 | } | |
1337 | if (IsPerson(from)) | |
5203cba5 | 1338 | snprintf(newcomment, sizeof(newcomment), "by %s: %s", |
212380e3 AC |
1339 | from->name, comment); |
1340 | ||
1341 | if(source_p->serv != NULL) | |
1342 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1343 | ||
1344 | if(source_p->servptr && source_p->servptr->serv) | |
330fc5c1 | 1345 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1346 | else |
1347 | s_assert(0); | |
1348 | ||
330fc5c1 | 1349 | rb_dlinkFindDestroy(source_p, &global_serv_list); |
212380e3 | 1350 | target_p = source_p->from; |
55abcbb2 | 1351 | |
212380e3 AC |
1352 | if(target_p != NULL && IsServer(target_p) && target_p != client_p && |
1353 | !IsMe(target_p) && (source_p->flags & FLAGS_KILLED) == 0) | |
1354 | { | |
55abcbb2 | 1355 | sendto_one(target_p, ":%s SQUIT %s :%s", |
212380e3 AC |
1356 | get_id(from, target_p), get_id(source_p, target_p), |
1357 | comment); | |
1358 | } | |
1359 | ||
1360 | if(has_id(source_p)) | |
1361 | del_from_id_hash(source_p->id, source_p); | |
1362 | ||
1363 | del_from_client_hash(source_p->name, source_p); | |
55abcbb2 | 1364 | remove_client_from_list(source_p); |
994544c2 | 1365 | scache_split(source_p->serv->nameinfo); |
55abcbb2 | 1366 | |
212380e3 AC |
1367 | SetDead(source_p); |
1368 | #ifdef DEBUG_EXITED_CLIENTS | |
330fc5c1 | 1369 | rb_dlinkAddAlloc(source_p, &dead_remote_list); |
212380e3 | 1370 | #else |
330fc5c1 | 1371 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1372 | #endif |
1373 | return 0; | |
1374 | } | |
1375 | ||
1376 | static int | |
55abcbb2 | 1377 | qs_server(struct Client *client_p, struct Client *source_p, struct Client *from, |
212380e3 AC |
1378 | const char *comment) |
1379 | { | |
212380e3 | 1380 | if(source_p->servptr && source_p->servptr->serv) |
330fc5c1 | 1381 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1382 | else |
1383 | s_assert(0); | |
1384 | ||
330fc5c1 | 1385 | rb_dlinkFindDestroy(source_p, &global_serv_list); |
55abcbb2 | 1386 | |
212380e3 AC |
1387 | if(has_id(source_p)) |
1388 | del_from_id_hash(source_p->id, source_p); | |
1389 | ||
1390 | del_from_client_hash(source_p->name, source_p); | |
55abcbb2 | 1391 | remove_client_from_list(source_p); |
19807b5b | 1392 | scache_split(source_p->serv->nameinfo); |
55abcbb2 | 1393 | |
212380e3 | 1394 | SetDead(source_p); |
55abcbb2 | 1395 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1396 | return 0; |
1397 | } | |
1398 | ||
1399 | static int | |
55abcbb2 | 1400 | exit_local_server(struct Client *client_p, struct Client *source_p, struct Client *from, |
212380e3 AC |
1401 | const char *comment) |
1402 | { | |
1403 | static char comment1[(HOSTLEN*2)+2]; | |
1404 | static char newcomment[BUFSIZE]; | |
1405 | unsigned int sendk, recvk; | |
55abcbb2 | 1406 | |
330fc5c1 AC |
1407 | rb_dlinkDelete(&source_p->localClient->tnode, &serv_list); |
1408 | rb_dlinkFindDestroy(source_p, &global_serv_list); | |
55abcbb2 | 1409 | |
212380e3 AC |
1410 | sendk = source_p->localClient->sendK; |
1411 | recvk = source_p->localClient->receiveK; | |
1412 | ||
1413 | /* Always show source here, so the server notices show | |
1414 | * which side initiated the split -- jilles | |
1415 | */ | |
5203cba5 | 1416 | snprintf(newcomment, sizeof(newcomment), "by %s: %s", |
212380e3 AC |
1417 | from == source_p ? me.name : from->name, comment); |
1418 | if (!IsIOError(source_p)) | |
1419 | sendto_one(source_p, "SQUIT %s :%s", use_id(source_p), | |
1420 | newcomment); | |
1421 | if(client_p != NULL && source_p != client_p && !IsIOError(source_p)) | |
1422 | { | |
1423 | sendto_one(source_p, "ERROR :Closing Link: 127.0.0.1 %s (%s)", | |
1424 | source_p->name, comment); | |
1425 | } | |
55abcbb2 | 1426 | |
212380e3 | 1427 | if(source_p->servptr && source_p->servptr->serv) |
330fc5c1 | 1428 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1429 | else |
1430 | s_assert(0); | |
1431 | ||
1432 | ||
1433 | close_connection(source_p); | |
55abcbb2 | 1434 | |
212380e3 AC |
1435 | if(ConfigServerHide.flatten_links) |
1436 | strcpy(comment1, "*.net *.split"); | |
1437 | else | |
1438 | { | |
66c8fdd2 | 1439 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1440 | strcat(comment1, " "); |
1441 | strcat(comment1, source_p->name); | |
1442 | } | |
1443 | ||
1444 | if(source_p->serv != NULL) | |
1445 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1446 | ||
1447 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s was connected" | |
1448 | " for %ld seconds. %d/%d sendK/recvK.", | |
adc6cc42 | 1449 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); |
212380e3 AC |
1450 | |
1451 | ilog(L_SERVER, "%s was connected for %ld seconds. %d/%d sendK/recvK.", | |
adc6cc42 | 1452 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); |
55abcbb2 | 1453 | |
212380e3 AC |
1454 | if(has_id(source_p)) |
1455 | del_from_id_hash(source_p->id, source_p); | |
1456 | ||
1457 | del_from_client_hash(source_p->name, source_p); | |
1458 | remove_client_from_list(source_p); | |
994544c2 | 1459 | scache_split(source_p->serv->nameinfo); |
55abcbb2 | 1460 | |
212380e3 | 1461 | SetDead(source_p); |
330fc5c1 | 1462 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1463 | return 0; |
1464 | } | |
1465 | ||
1466 | ||
55abcbb2 | 1467 | /* |
07554369 | 1468 | * This assumes IsPerson(source_p) == true && MyConnect(source_p) == true |
212380e3 AC |
1469 | */ |
1470 | ||
1471 | static int | |
1472 | exit_local_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1473 | const char *comment) | |
1474 | { | |
1475 | unsigned long on_for; | |
08d75d97 | 1476 | char tbuf[26]; |
212380e3 AC |
1477 | |
1478 | exit_generic_client(client_p, source_p, from, comment); | |
1479 | clear_monitor(source_p); | |
1480 | ||
1481 | s_assert(IsPerson(source_p)); | |
330fc5c1 AC |
1482 | rb_dlinkDelete(&source_p->localClient->tnode, &lclient_list); |
1483 | rb_dlinkDelete(&source_p->lnode, &me.serv->users); | |
212380e3 AC |
1484 | |
1485 | if(IsOper(source_p)) | |
330fc5c1 | 1486 | rb_dlinkFindDestroy(source_p, &local_oper_list); |
212380e3 AC |
1487 | |
1488 | sendto_realops_snomask(SNO_CCONN, L_ALL, | |
1489 | "Client exiting: %s (%s@%s) [%s] [%s]", | |
1490 | source_p->name, | |
1491 | source_p->username, source_p->host, comment, | |
1492 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255"); | |
1493 | ||
1494 | sendto_realops_snomask(SNO_CCONNEXT, L_ALL, | |
1495 | "CLIEXIT %s %s %s %s 0 %s", | |
1496 | source_p->name, source_p->username, source_p->host, | |
1497 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255", | |
1498 | comment); | |
1499 | ||
e3354945 | 1500 | on_for = rb_current_time() - source_p->localClient->firsttime; |
212380e3 | 1501 | |
9641f156 | 1502 | ilog(L_USER, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d", |
08d75d97 | 1503 | rb_ctime(rb_current_time(), tbuf, sizeof(tbuf)), on_for / 3600, |
212380e3 AC |
1504 | (on_for % 3600) / 60, on_for % 60, |
1505 | source_p->name, source_p->username, source_p->host, | |
9641f156 | 1506 | source_p->sockhost, |
212380e3 AC |
1507 | source_p->localClient->sendK, source_p->localClient->receiveK); |
1508 | ||
1509 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", source_p->host, comment); | |
1510 | close_connection(source_p); | |
1511 | ||
1512 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1513 | { | |
1514 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1515 | ":%s QUIT :%s", use_id(source_p), comment); | |
212380e3 AC |
1516 | } |
1517 | ||
1518 | SetDead(source_p); | |
330fc5c1 | 1519 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1520 | return(CLIENT_EXITED); |
1521 | } | |
1522 | ||
1523 | ||
1524 | /* | |
1525 | ** exit_client - This is old "m_bye". Name changed, because this is not a | |
1526 | ** protocol function, but a general server utility function. | |
1527 | ** | |
1528 | ** This function exits a client of *any* type (user, server, etc) | |
1529 | ** from this server. Also, this generates all necessary prototol | |
1530 | ** messages that this exit may cause. | |
1531 | ** | |
1532 | ** 1) If the client is a local client, then this implicitly | |
1533 | ** exits all other clients depending on this connection (e.g. | |
1534 | ** remote clients having 'from'-field that points to this. | |
1535 | ** | |
1536 | ** 2) If the client is a remote client, then only this is exited. | |
1537 | ** | |
1538 | ** For convenience, this function returns a suitable value for | |
1539 | ** m_function return value: | |
1540 | ** | |
1541 | ** CLIENT_EXITED if (client_p == source_p) | |
1542 | ** 0 if (client_p != source_p) | |
cbeab4bc | 1543 | */ |
212380e3 AC |
1544 | int |
1545 | exit_client(struct Client *client_p, /* The local client originating the | |
1546 | * exit or NULL, if this exit is | |
1547 | * generated by this server for | |
1548 | * internal reasons. | |
1549 | * This will not get any of the | |
1550 | * generated messages. */ | |
1551 | struct Client *source_p, /* Client exiting */ | |
1552 | struct Client *from, /* Client firing off this Exit, | |
1553 | * never NULL! */ | |
1554 | const char *comment /* Reason for the exit */ | |
1555 | ) | |
1556 | { | |
1557 | hook_data_client_exit hdata; | |
1558 | if(IsClosing(source_p)) | |
1559 | return -1; | |
1560 | ||
1561 | /* note, this HAS to be here, when we exit a client we attempt to | |
1562 | * send them data, if this generates a write error we must *not* add | |
1563 | * them to the abort list --fl | |
1564 | */ | |
1565 | SetClosing(source_p); | |
1566 | ||
1567 | hdata.local_link = client_p; | |
1568 | hdata.target = source_p; | |
1569 | hdata.from = from; | |
1570 | hdata.comment = comment; | |
1571 | call_hook(h_client_exit, &hdata); | |
1572 | ||
1573 | if(MyConnect(source_p)) | |
1574 | { | |
1575 | /* Local clients of various types */ | |
1576 | if(IsPerson(source_p)) | |
1577 | return exit_local_client(client_p, source_p, from, comment); | |
1578 | else if(IsServer(source_p)) | |
1579 | return exit_local_server(client_p, source_p, from, comment); | |
1580 | /* IsUnknown || IsConnecting || IsHandShake */ | |
1581 | else if(!IsReject(source_p)) | |
1582 | return exit_unknown_client(client_p, source_p, from, comment); | |
55abcbb2 KB |
1583 | } |
1584 | else | |
212380e3 AC |
1585 | { |
1586 | /* Remotes */ | |
1587 | if(IsPerson(source_p)) | |
1588 | return exit_remote_client(client_p, source_p, from, comment); | |
1589 | else if(IsServer(source_p)) | |
1590 | return exit_remote_server(client_p, source_p, from, comment); | |
1591 | } | |
1592 | ||
1593 | return -1; | |
1594 | } | |
1595 | ||
1596 | /* | |
1597 | * Count up local client memory | |
1598 | */ | |
1599 | ||
1600 | /* XXX one common Client list now */ | |
1601 | void | |
1602 | count_local_client_memory(size_t * count, size_t * local_client_memory_used) | |
1603 | { | |
1087485c JT |
1604 | size_t lusage; |
1605 | rb_bh_usage(lclient_heap, count, NULL, &lusage, NULL); | |
adc6cc42 | 1606 | *local_client_memory_used = lusage + (*count * (sizeof(void *) + sizeof(struct Client))); |
212380e3 AC |
1607 | } |
1608 | ||
1609 | /* | |
1610 | * Count up remote client memory | |
1611 | */ | |
1612 | void | |
1613 | count_remote_client_memory(size_t * count, size_t * remote_client_memory_used) | |
1614 | { | |
1087485c JT |
1615 | size_t lcount, rcount; |
1616 | rb_bh_usage(lclient_heap, &lcount, NULL, NULL, NULL); | |
1617 | rb_bh_usage(client_heap, &rcount, NULL, NULL, NULL); | |
1618 | *count = rcount - lcount; | |
adc6cc42 | 1619 | *remote_client_memory_used = *count * (sizeof(void *) + sizeof(struct Client)); |
212380e3 AC |
1620 | } |
1621 | ||
1622 | ||
1623 | /* | |
1624 | * accept processing, this adds a form of "caller ID" to ircd | |
55abcbb2 | 1625 | * |
212380e3 | 1626 | * If a client puts themselves into "caller ID only" mode, |
55abcbb2 | 1627 | * only clients that match a client pointer they have put on |
212380e3 AC |
1628 | * the accept list will be allowed to message them. |
1629 | * | |
1630 | * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ] | |
1631 | * | |
1632 | * [target.allow_list] -> [ source1 ] -> [source2 ] | |
1633 | * | |
1634 | * i.e. a target will have a link list of source pointers it will allow | |
1635 | * each source client then has a back pointer pointing back | |
1636 | * to the client that has it on its accept list. | |
1637 | * This allows for exit_one_client to remove these now bogus entries | |
55abcbb2 | 1638 | * from any client having an accept on them. |
212380e3 AC |
1639 | */ |
1640 | /* | |
1641 | * del_all_accepts | |
1642 | * | |
1643 | * inputs - pointer to exiting client | |
1644 | * output - NONE | |
1645 | * side effects - Walk through given clients allow_list and on_allow_list | |
1646 | * remove all references to this client | |
1647 | */ | |
1648 | void | |
1649 | del_all_accepts(struct Client *client_p) | |
1650 | { | |
330fc5c1 | 1651 | rb_dlink_node *ptr; |
637c4932 | 1652 | rb_dlink_node *next_ptr; |
212380e3 AC |
1653 | struct Client *target_p; |
1654 | ||
1655 | if(MyClient(client_p) && client_p->localClient->allow_list.head) | |
1656 | { | |
1657 | /* clear this clients accept list, and remove them from | |
1658 | * everyones on_accept_list | |
1659 | */ | |
637c4932 | 1660 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->allow_list.head) |
212380e3 AC |
1661 | { |
1662 | target_p = ptr->data; | |
330fc5c1 AC |
1663 | rb_dlinkFindDestroy(client_p, &target_p->on_allow_list); |
1664 | rb_dlinkDestroy(ptr, &client_p->localClient->allow_list); | |
212380e3 AC |
1665 | } |
1666 | } | |
1667 | ||
1668 | /* remove this client from everyones accept list */ | |
637c4932 | 1669 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) |
212380e3 AC |
1670 | { |
1671 | target_p = ptr->data; | |
330fc5c1 AC |
1672 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); |
1673 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
212380e3 AC |
1674 | } |
1675 | } | |
1676 | ||
1677 | /* | |
521f9d63 | 1678 | * show_ip() - asks if the true IP should be shown when source is |
55abcbb2 | 1679 | * asking for info about target |
212380e3 AC |
1680 | * |
1681 | * Inputs - source_p who is asking | |
1682 | * - target_p who do we want the info on | |
521f9d63 | 1683 | * Output - returns 1 if clear IP can be shown, otherwise 0 |
212380e3 AC |
1684 | * Side Effects - none |
1685 | */ | |
1686 | ||
1687 | int | |
1688 | show_ip(struct Client *source_p, struct Client *target_p) | |
1689 | { | |
1690 | if(IsAnyServer(target_p)) | |
1691 | { | |
212380e3 AC |
1692 | return 0; |
1693 | } | |
1694 | else if(IsIPSpoof(target_p)) | |
1695 | { | |
1696 | /* source == NULL indicates message is being sent | |
1697 | * to local opers. | |
1698 | */ | |
1699 | if(!ConfigFileEntry.hide_spoof_ips && | |
1700 | (source_p == NULL || MyOper(source_p))) | |
1701 | return 1; | |
1702 | return 0; | |
1703 | } | |
1704 | else if(IsDynSpoof(target_p) && (source_p != NULL && !IsOper(source_p))) | |
1705 | return 0; | |
1706 | else | |
1707 | return 1; | |
1708 | } | |
1709 | ||
1710 | int | |
1711 | show_ip_conf(struct ConfItem *aconf, struct Client *source_p) | |
1712 | { | |
1713 | if(IsConfDoSpoofIp(aconf)) | |
1714 | { | |
1715 | if(!ConfigFileEntry.hide_spoof_ips && MyOper(source_p)) | |
1716 | return 1; | |
1717 | ||
1718 | return 0; | |
1719 | } | |
1720 | else | |
1721 | return 1; | |
1722 | } | |
1723 | ||
364e59f8 JT |
1724 | int |
1725 | show_ip_whowas(struct Whowas *whowas, struct Client *source_p) | |
1726 | { | |
1727 | if(whowas->flags & WHOWAS_IP_SPOOFING) | |
1728 | if(ConfigFileEntry.hide_spoof_ips || !MyOper(source_p)) | |
1729 | return 0; | |
1730 | if(whowas->flags & WHOWAS_DYNSPOOF) | |
1731 | if(!IsOper(source_p)) | |
1732 | return 0; | |
1733 | return 1; | |
1734 | } | |
1735 | ||
212380e3 AC |
1736 | /* |
1737 | * make_user | |
1738 | * | |
1739 | * inputs - pointer to client struct | |
1740 | * output - pointer to struct User | |
1741 | * side effects - add's an User information block to a client | |
1742 | * if it was not previously allocated. | |
1743 | */ | |
1744 | struct User * | |
1745 | make_user(struct Client *client_p) | |
1746 | { | |
1747 | struct User *user; | |
1748 | ||
1749 | user = client_p->user; | |
1750 | if(!user) | |
1751 | { | |
398b6a73 | 1752 | user = (struct User *) rb_bh_alloc(user_heap); |
212380e3 AC |
1753 | user->refcnt = 1; |
1754 | client_p->user = user; | |
1755 | } | |
1756 | return user; | |
1757 | } | |
1758 | ||
1759 | /* | |
1760 | * make_server | |
1761 | * | |
1762 | * inputs - pointer to client struct | |
1763 | * output - pointer to server_t | |
1764 | * side effects - add's an Server information block to a client | |
1765 | * if it was not previously allocated. | |
1766 | */ | |
8f103562 | 1767 | struct Server * |
212380e3 AC |
1768 | make_server(struct Client *client_p) |
1769 | { | |
8f103562 | 1770 | struct Server *serv = client_p->serv; |
212380e3 AC |
1771 | |
1772 | if(!serv) | |
1773 | { | |
8f103562 | 1774 | serv = (struct Server *) rb_malloc(sizeof(struct Server)); |
212380e3 AC |
1775 | client_p->serv = serv; |
1776 | } | |
1777 | return client_p->serv; | |
1778 | } | |
1779 | ||
1780 | /* | |
1781 | * free_user | |
55abcbb2 | 1782 | * |
212380e3 AC |
1783 | * inputs - pointer to user struct |
1784 | * - pointer to client struct | |
1785 | * output - none | |
1786 | * side effects - Decrease user reference count by one and release block, | |
1787 | * if count reaches 0 | |
1788 | */ | |
1789 | void | |
1790 | free_user(struct User *user, struct Client *client_p) | |
1791 | { | |
c127b45b SB |
1792 | free_away(client_p); |
1793 | ||
212380e3 AC |
1794 | if(--user->refcnt <= 0) |
1795 | { | |
c127b45b SB |
1796 | if(user->away) |
1797 | rb_free((char *) user->away); | |
212380e3 AC |
1798 | /* |
1799 | * sanity check | |
1800 | */ | |
1801 | if(user->refcnt < 0 || user->invited.head || user->channel.head) | |
1802 | { | |
1803 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
0b9aca38 AC |
1804 | "* %p user (%s!%s@%s) %p %p %p %lu %d *", |
1805 | client_p, | |
212380e3 AC |
1806 | client_p ? client_p-> |
1807 | name : "<noname>", | |
1808 | client_p->username, | |
1809 | client_p->host, | |
0b9aca38 AC |
1810 | user, |
1811 | user->invited.head, | |
1812 | user->channel.head, | |
330fc5c1 | 1813 | rb_dlink_list_length(&user->channel), |
212380e3 AC |
1814 | user->refcnt); |
1815 | s_assert(!user->refcnt); | |
1816 | s_assert(!user->invited.head); | |
1817 | s_assert(!user->channel.head); | |
1818 | } | |
1819 | ||
398b6a73 | 1820 | rb_bh_free(user_heap, user); |
212380e3 AC |
1821 | } |
1822 | } | |
1823 | ||
e581ea8e | 1824 | void |
c127b45b | 1825 | allocate_away(struct Client *client_p) |
e581ea8e | 1826 | { |
c127b45b | 1827 | if(client_p->user->away == NULL) |
55abcbb2 | 1828 | client_p->user->away = rb_bh_alloc(away_heap); |
e581ea8e AC |
1829 | } |
1830 | ||
c127b45b | 1831 | |
e581ea8e | 1832 | void |
c127b45b | 1833 | free_away(struct Client *client_p) |
e581ea8e | 1834 | { |
c127b45b SB |
1835 | if(client_p->user != NULL && client_p->user->away != NULL) { |
1836 | rb_bh_free(away_heap, client_p->user->away); | |
1837 | client_p->user->away = NULL; | |
e581ea8e AC |
1838 | } |
1839 | } | |
1840 | ||
212380e3 AC |
1841 | void |
1842 | init_uid(void) | |
1843 | { | |
1844 | int i; | |
1845 | ||
1846 | for(i = 0; i < 3; i++) | |
1847 | current_uid[i] = me.id[i]; | |
1848 | ||
1849 | for(i = 3; i < 9; i++) | |
1850 | current_uid[i] = 'A'; | |
1851 | ||
1852 | current_uid[9] = '\0'; | |
1853 | } | |
1854 | ||
1855 | ||
1856 | char * | |
1857 | generate_uid(void) | |
1858 | { | |
428f9bc1 | 1859 | static int flipped = 0; |
212380e3 AC |
1860 | int i; |
1861 | ||
428f9bc1 | 1862 | uid_restart: |
212380e3 AC |
1863 | for(i = 8; i > 3; i--) |
1864 | { | |
1865 | if(current_uid[i] == 'Z') | |
1866 | { | |
1867 | current_uid[i] = '0'; | |
428f9bc1 | 1868 | goto out; |
212380e3 AC |
1869 | } |
1870 | else if(current_uid[i] != '9') | |
1871 | { | |
1872 | current_uid[i]++; | |
428f9bc1 | 1873 | goto out; |
212380e3 AC |
1874 | } |
1875 | else | |
1876 | current_uid[i] = 'A'; | |
1877 | } | |
1878 | ||
1879 | /* if this next if() triggers, we're fucked. */ | |
1880 | if(current_uid[3] == 'Z') | |
1881 | { | |
1882 | current_uid[i] = 'A'; | |
428f9bc1 | 1883 | flipped = 1; |
212380e3 AC |
1884 | } |
1885 | else | |
1886 | current_uid[i]++; | |
428f9bc1 AC |
1887 | out: |
1888 | /* if this happens..well, i'm not sure what to say, but lets handle it correctly */ | |
1889 | if(rb_unlikely(flipped)) | |
1890 | { | |
1891 | /* this slows down uid generation a bit... */ | |
1892 | if(find_id(current_uid) != NULL) | |
1893 | goto uid_restart; | |
1894 | } | |
212380e3 AC |
1895 | return current_uid; |
1896 | } | |
1897 | ||
1898 | /* | |
1899 | * close_connection | |
1900 | * Close the physical connection. This function must make | |
1901 | * MyConnect(client_p) == FALSE, and set client_p->from == NULL. | |
1902 | */ | |
1903 | void | |
1904 | close_connection(struct Client *client_p) | |
1905 | { | |
1906 | s_assert(client_p != NULL); | |
1907 | if(client_p == NULL) | |
1908 | return; | |
1909 | ||
1910 | s_assert(MyConnect(client_p)); | |
1911 | if(!MyConnect(client_p)) | |
1912 | return; | |
55abcbb2 | 1913 | |
212380e3 AC |
1914 | if(IsServer(client_p)) |
1915 | { | |
1916 | struct server_conf *server_p; | |
1917 | ||
8bd5767b JT |
1918 | ServerStats.is_sv++; |
1919 | ServerStats.is_sbs += client_p->localClient->sendB; | |
1920 | ServerStats.is_sbr += client_p->localClient->receiveB; | |
679ccbe5 | 1921 | ServerStats.is_sti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); |
212380e3 AC |
1922 | |
1923 | /* | |
1924 | * If the connection has been up for a long amount of time, schedule | |
1925 | * a 'quick' reconnect, else reset the next-connect cycle. | |
1926 | */ | |
1927 | if((server_p = find_server_conf(client_p->name)) != NULL) | |
1928 | { | |
1929 | /* | |
1930 | * Reschedule a faster reconnect, if this was a automatically | |
1931 | * connected configuration entry. (Note that if we have had | |
1932 | * a rehash in between, the status has been changed to | |
1933 | * CONF_ILLEGAL). But only do this if it was a "good" link. | |
1934 | */ | |
1935 | server_p->hold = time(NULL); | |
1936 | server_p->hold += | |
1937 | (server_p->hold - client_p->localClient->lasttime > | |
1938 | HANGONGOODLINK) ? HANGONRETRYDELAY : ConFreq(server_p->class); | |
1939 | } | |
1940 | ||
1941 | } | |
1942 | else if(IsClient(client_p)) | |
1943 | { | |
8bd5767b JT |
1944 | ServerStats.is_cl++; |
1945 | ServerStats.is_cbs += client_p->localClient->sendB; | |
1946 | ServerStats.is_cbr += client_p->localClient->receiveB; | |
679ccbe5 | 1947 | ServerStats.is_cti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); |
212380e3 AC |
1948 | } |
1949 | else | |
47adde3d | 1950 | ServerStats.is_ni++; |
54ac8b60 | 1951 | |
36f0ec74 AC |
1952 | del_from_cli_connid_hash(client_p); |
1953 | ||
c6d72037 | 1954 | if(client_p->localClient->F != NULL) |
54ac8b60 VY |
1955 | { |
1956 | /* attempt to flush any pending dbufs. Evil, but .. -- adrian */ | |
1957 | if(!IsIOError(client_p)) | |
1958 | send_queued(client_p); | |
1959 | ||
1960 | rb_close(client_p->localClient->F); | |
1961 | client_p->localClient->F = NULL; | |
1962 | } | |
1963 | ||
734d420e JT |
1964 | rb_linebuf_donebuf(&client_p->localClient->buf_sendq); |
1965 | rb_linebuf_donebuf(&client_p->localClient->buf_recvq); | |
212380e3 AC |
1966 | detach_conf(client_p); |
1967 | ||
1968 | /* XXX shouldnt really be done here. */ | |
1969 | detach_server_conf(client_p); | |
1970 | ||
1971 | client_p->from = NULL; /* ...this should catch them! >:) --msa */ | |
1972 | ClearMyConnect(client_p); | |
1973 | SetIOError(client_p); | |
1974 | } | |
1975 | ||
1976 | ||
1977 | ||
1978 | void | |
1979 | error_exit_client(struct Client *client_p, int error) | |
1980 | { | |
1981 | /* | |
1982 | * ...hmm, with non-blocking sockets we might get | |
1983 | * here from quite valid reasons, although.. why | |
1984 | * would select report "data available" when there | |
1985 | * wasn't... so, this must be an error anyway... --msa | |
1986 | * actually, EOF occurs when read() returns 0 and | |
1987 | * in due course, select() returns that fd as ready | |
1988 | * for reading even though it ends up being an EOF. -avalon | |
1989 | */ | |
1990 | char errmsg[255]; | |
734d420e | 1991 | int current_error = rb_get_sockerr(client_p->localClient->F); |
212380e3 AC |
1992 | |
1993 | SetIOError(client_p); | |
1994 | ||
1995 | if(IsServer(client_p) || IsHandshake(client_p)) | |
1996 | { | |
212380e3 AC |
1997 | if(error == 0) |
1998 | { | |
1999 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2000 | "Server %s closed the connection", | |
b3ebc7ab | 2001 | client_p->name); |
212380e3 AC |
2002 | |
2003 | ilog(L_SERVER, "Server %s closed the connection", | |
2004 | log_client_name(client_p, SHOW_IP)); | |
2005 | } | |
2006 | else | |
2007 | { | |
2008 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2009 | "Lost connection to %s: %s", | |
2010 | client_p->name, strerror(current_error)); | |
2011 | ilog(L_SERVER, "Lost connection to %s: %s", | |
2012 | log_client_name(client_p, SHOW_IP), strerror(current_error)); | |
2013 | } | |
212380e3 AC |
2014 | } |
2015 | ||
2016 | if(error == 0) | |
f427c8b0 | 2017 | rb_strlcpy(errmsg, "Remote host closed the connection", sizeof(errmsg)); |
212380e3 | 2018 | else |
5203cba5 | 2019 | snprintf(errmsg, sizeof(errmsg), "Read error: %s", strerror(current_error)); |
212380e3 AC |
2020 | |
2021 | exit_client(client_p, client_p, &me, errmsg); | |
2022 | } |