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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" | |
30 | #include "common.h" | |
212380e3 | 31 | #include "hash.h" |
4562c604 | 32 | #include "match.h" |
212380e3 | 33 | #include "ircd.h" |
212380e3 AC |
34 | #include "numeric.h" |
35 | #include "packet.h" | |
36 | #include "s_auth.h" | |
212380e3 AC |
37 | #include "s_conf.h" |
38 | #include "s_newconf.h" | |
4016731b | 39 | #include "logger.h" |
212380e3 AC |
40 | #include "s_serv.h" |
41 | #include "s_stats.h" | |
42 | #include "send.h" | |
43 | #include "whowas.h" | |
44 | #include "s_user.h" | |
212380e3 | 45 | #include "hash.h" |
212380e3 | 46 | #include "hostmask.h" |
212380e3 AC |
47 | #include "listener.h" |
48 | #include "hook.h" | |
49 | #include "msg.h" | |
50 | #include "monitor.h" | |
51 | #include "blacklist.h" | |
54015b5f | 52 | #include "reject.h" |
994544c2 | 53 | #include "scache.h" |
a4bf26dd | 54 | #include "rb_dictionary.h" |
c6d72037 | 55 | #include "sslproc.h" |
77d3d2db | 56 | #include "s_assert.h" |
212380e3 AC |
57 | |
58 | #define DEBUG_EXITED_CLIENTS | |
59 | ||
330fc5c1 AC |
60 | static void check_pings_list(rb_dlink_list * list); |
61 | static void check_unknowns_list(rb_dlink_list * list); | |
212380e3 AC |
62 | static void free_exited_clients(void *unused); |
63 | static void exit_aborted_clients(void *unused); | |
64 | ||
65 | static int exit_remote_client(struct Client *, struct Client *, struct Client *,const char *); | |
66 | static int exit_remote_server(struct Client *, struct Client *, struct Client *,const char *); | |
67 | static int exit_local_client(struct Client *, struct Client *, struct Client *,const char *); | |
68 | static int exit_unknown_client(struct Client *, struct Client *, struct Client *,const char *); | |
69 | static int exit_local_server(struct Client *, struct Client *, struct Client *,const char *); | |
70 | static int qs_server(struct Client *, struct Client *, struct Client *, const char *comment); | |
71 | ||
72 | static EVH check_pings; | |
73 | ||
5433b83e VY |
74 | static rb_bh *client_heap = NULL; |
75 | static rb_bh *lclient_heap = NULL; | |
b09cbaa3 | 76 | static rb_bh *pclient_heap = NULL; |
5433b83e | 77 | static rb_bh *user_heap = NULL; |
c127b45b | 78 | static rb_bh *away_heap = NULL; |
5433b83e | 79 | static char current_uid[IDLEN]; |
b5b4a0e7 | 80 | static int32_t current_connid = 0; |
212380e3 | 81 | |
43de0f45 AC |
82 | struct Dictionary *nd_dict = NULL; |
83 | ||
212380e3 AC |
84 | enum |
85 | { | |
86 | D_LINED, | |
aae358c0 | 87 | K_LINED |
212380e3 AC |
88 | }; |
89 | ||
330fc5c1 | 90 | rb_dlink_list dead_list; |
212380e3 | 91 | #ifdef DEBUG_EXITED_CLIENTS |
330fc5c1 | 92 | static rb_dlink_list dead_remote_list; |
212380e3 AC |
93 | #endif |
94 | ||
95 | struct abort_client | |
96 | { | |
330fc5c1 | 97 | rb_dlink_node node; |
212380e3 AC |
98 | struct Client *client; |
99 | char notice[REASONLEN]; | |
100 | }; | |
101 | ||
330fc5c1 | 102 | static rb_dlink_list abort_list; |
212380e3 AC |
103 | |
104 | ||
105 | /* | |
106 | * init_client | |
107 | * | |
108 | * inputs - NONE | |
109 | * output - NONE | |
110 | * side effects - initialize client free memory | |
111 | */ | |
112 | void | |
113 | init_client(void) | |
114 | { | |
115 | /* | |
116 | * start off the check ping event .. -- adrian | |
117 | * Every 30 seconds is plenty -- db | |
118 | */ | |
1087485c | 119 | client_heap = rb_bh_create(sizeof(struct Client), CLIENT_HEAP_SIZE, "client_heap"); |
adc6cc42 VY |
120 | lclient_heap = rb_bh_create(sizeof(struct LocalUser), LCLIENT_HEAP_SIZE, "lclient_heap"); |
121 | pclient_heap = rb_bh_create(sizeof(struct PreClient), PCLIENT_HEAP_SIZE, "pclient_heap"); | |
b09cbaa3 | 122 | user_heap = rb_bh_create(sizeof(struct User), USER_HEAP_SIZE, "user_heap"); |
c127b45b | 123 | away_heap = rb_bh_create(AWAYLEN, AWAY_HEAP_SIZE, "away_heap"); |
adc6cc42 | 124 | |
3b2ebd04 JT |
125 | rb_event_addish("check_pings", check_pings, NULL, 30); |
126 | rb_event_addish("free_exited_clients", &free_exited_clients, NULL, 4); | |
127 | rb_event_addish("exit_aborted_clients", exit_aborted_clients, NULL, 1); | |
5a606a8f | 128 | rb_event_add("flood_recalc", flood_recalc, NULL, 1); |
43de0f45 | 129 | |
a4bf26dd | 130 | nd_dict = rb_dictionary_create("nickdelay", irccmp); |
212380e3 AC |
131 | } |
132 | ||
133 | ||
134 | /* | |
135 | * make_client - create a new Client struct and set it to initial state. | |
136 | * | |
137 | * from == NULL, create local client (a client connected | |
138 | * to a socket). | |
139 | * | |
140 | * from, create remote client (behind a socket | |
141 | * associated with the client defined by | |
142 | * 'from'). ('from' is a local client!!). | |
143 | */ | |
144 | struct Client * | |
145 | make_client(struct Client *from) | |
146 | { | |
147 | struct Client *client_p = NULL; | |
148 | struct LocalUser *localClient; | |
149 | ||
398b6a73 | 150 | client_p = rb_bh_alloc(client_heap); |
212380e3 AC |
151 | |
152 | if(from == NULL) | |
153 | { | |
154 | client_p->from = client_p; /* 'from' of local client is self! */ | |
155 | ||
b09cbaa3 | 156 | localClient = rb_bh_alloc(lclient_heap); |
212380e3 AC |
157 | SetMyConnect(client_p); |
158 | client_p->localClient = localClient; | |
159 | ||
e3354945 | 160 | client_p->localClient->lasttime = client_p->localClient->firsttime = rb_current_time(); |
212380e3 | 161 | |
c5c2f506 | 162 | client_p->localClient->F = NULL; |
212380e3 | 163 | |
b5b4a0e7 AC |
164 | if(current_connid+1 == 0) |
165 | current_connid++; | |
166 | ||
167 | client_p->localClient->connid = ++current_connid; | |
168 | ||
169 | if(current_connid+1 == 0) | |
170 | current_connid++; | |
171 | ||
172 | client_p->localClient->zconnid = ++current_connid; | |
173 | add_to_cli_connid_hash(client_p); | |
174 | ||
5ef68b13 | 175 | client_p->preClient = rb_bh_alloc(pclient_heap); |
212380e3 AC |
176 | |
177 | /* as good a place as any... */ | |
330fc5c1 | 178 | rb_dlinkAdd(client_p, &client_p->localClient->tnode, &unknown_list); |
212380e3 AC |
179 | } |
180 | else | |
181 | { /* from is not NULL */ | |
182 | client_p->localClient = NULL; | |
183 | client_p->preClient = NULL; | |
184 | client_p->from = from; /* 'from' of local client is self! */ | |
185 | } | |
55abcbb2 | 186 | |
212380e3 AC |
187 | SetUnknown(client_p); |
188 | strcpy(client_p->username, "unknown"); | |
189 | ||
190 | return client_p; | |
191 | } | |
192 | ||
193 | void | |
194 | free_pre_client(struct Client *client_p) | |
195 | { | |
196 | struct Blacklist *blptr; | |
197 | ||
198 | s_assert(NULL != client_p); | |
199 | ||
200 | if(client_p->preClient == NULL) | |
201 | return; | |
202 | ||
203 | blptr = client_p->preClient->dnsbl_listed; | |
204 | if (blptr != NULL) | |
205 | unref_blacklist(blptr); | |
7fc09bc4 KB |
206 | s_assert(rb_dlink_list_length(&client_p->preClient->dnsbl_queries) == 0); |
207 | ||
398b6a73 | 208 | rb_bh_free(pclient_heap, client_p->preClient); |
212380e3 AC |
209 | client_p->preClient = NULL; |
210 | } | |
211 | ||
212 | static void | |
213 | free_local_client(struct Client *client_p) | |
214 | { | |
215 | s_assert(NULL != client_p); | |
216 | s_assert(&me != client_p); | |
217 | ||
218 | if(client_p->localClient == NULL) | |
219 | return; | |
220 | ||
221 | /* | |
222 | * clean up extra sockets from P-lines which have been discarded. | |
223 | */ | |
224 | if(client_p->localClient->listener) | |
225 | { | |
226 | s_assert(0 < client_p->localClient->listener->ref_count); | |
227 | if(0 == --client_p->localClient->listener->ref_count | |
228 | && !client_p->localClient->listener->active) | |
229 | free_listener(client_p->localClient->listener); | |
230 | client_p->localClient->listener = 0; | |
231 | } | |
232 | ||
b5b4a0e7 | 233 | del_from_cli_connid_hash(client_p); |
c6d72037 VY |
234 | if(client_p->localClient->F != NULL) |
235 | { | |
3b2ebd04 | 236 | rb_close(client_p->localClient->F); |
c6d72037 | 237 | } |
212380e3 AC |
238 | |
239 | if(client_p->localClient->passwd) | |
240 | { | |
241 | memset(client_p->localClient->passwd, 0, | |
242 | strlen(client_p->localClient->passwd)); | |
637c4932 | 243 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
244 | } |
245 | ||
90afc118 | 246 | rb_free(client_p->localClient->auth_user); |
637c4932 VY |
247 | rb_free(client_p->localClient->challenge); |
248 | rb_free(client_p->localClient->fullcaps); | |
249 | rb_free(client_p->localClient->opername); | |
250 | rb_free(client_p->localClient->mangledhost); | |
0e52d0d4 JT |
251 | if (client_p->localClient->privset) |
252 | privilegeset_unref(client_p->localClient->privset); | |
212380e3 | 253 | |
a4165b42 AS |
254 | if(IsSSL(client_p)) |
255 | ssld_decrement_clicount(client_p->localClient->ssl_ctl); | |
55abcbb2 | 256 | |
a4165b42 AS |
257 | if(IsCapable(client_p, CAP_ZIP)) |
258 | ssld_decrement_clicount(client_p->localClient->z_ctl); | |
c6d72037 | 259 | |
398b6a73 | 260 | rb_bh_free(lclient_heap, client_p->localClient); |
212380e3 AC |
261 | client_p->localClient = NULL; |
262 | } | |
263 | ||
264 | void | |
265 | free_client(struct Client *client_p) | |
266 | { | |
267 | s_assert(NULL != client_p); | |
268 | s_assert(&me != client_p); | |
269 | free_local_client(client_p); | |
270 | free_pre_client(client_p); | |
8eda114a | 271 | rb_free(client_p->certfp); |
398b6a73 | 272 | rb_bh_free(client_heap, client_p); |
212380e3 AC |
273 | } |
274 | ||
275 | /* | |
276 | * check_pings - go through the local client list and check activity | |
277 | * kill off stuff that should die | |
278 | * | |
279 | * inputs - NOT USED (from event) | |
280 | * output - next time_t when check_pings() should be called again | |
55abcbb2 | 281 | * side effects - |
212380e3 AC |
282 | * |
283 | * | |
284 | * A PING can be sent to clients as necessary. | |
285 | * | |
286 | * Client/Server ping outs are handled. | |
287 | */ | |
288 | ||
289 | /* | |
290 | * Addon from adrian. We used to call this after nextping seconds, | |
291 | * however I've changed it to run once a second. This is only for | |
292 | * PING timeouts, not K/etc-line checks (thanks dianora!). Having it | |
293 | * run once a second makes life a lot easier - when a new client connects | |
294 | * and they need a ping in 4 seconds, if nextping was set to 20 seconds | |
295 | * we end up waiting 20 seconds. This is stupid. :-) | |
296 | * I will optimise (hah!) check_pings() once I've finished working on | |
297 | * tidying up other network IO evilnesses. | |
298 | * -- adrian | |
299 | */ | |
300 | ||
301 | static void | |
302 | check_pings(void *notused) | |
303 | { | |
304 | check_pings_list(&lclient_list); | |
305 | check_pings_list(&serv_list); | |
306 | check_unknowns_list(&unknown_list); | |
307 | } | |
308 | ||
309 | /* | |
310 | * Check_pings_list() | |
311 | * | |
312 | * inputs - pointer to list to check | |
313 | * output - NONE | |
55abcbb2 | 314 | * side effects - |
212380e3 AC |
315 | */ |
316 | static void | |
330fc5c1 | 317 | check_pings_list(rb_dlink_list * list) |
212380e3 AC |
318 | { |
319 | char scratch[32]; /* way too generous but... */ | |
320 | struct Client *client_p; /* current local client_p being examined */ | |
321 | int ping = 0; /* ping time value from client */ | |
637c4932 | 322 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 323 | |
637c4932 | 324 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
325 | { |
326 | client_p = ptr->data; | |
327 | ||
212380e3 AC |
328 | if(!MyConnect(client_p) || IsDead(client_p)) |
329 | continue; | |
330 | ||
e2a98043 | 331 | ping = get_client_ping(client_p); |
212380e3 | 332 | |
e3354945 | 333 | if(ping < (rb_current_time() - client_p->localClient->lasttime)) |
212380e3 AC |
334 | { |
335 | /* | |
336 | * If the client/server hasnt talked to us in 2*ping seconds | |
337 | * and it has a ping time, then close its connection. | |
338 | */ | |
e3354945 | 339 | if(((rb_current_time() - client_p->localClient->lasttime) >= (2 * ping) |
212380e3 AC |
340 | && (client_p->flags & FLAGS_PINGSENT))) |
341 | { | |
e2a98043 | 342 | if(IsServer(client_p)) |
212380e3 | 343 | { |
e2a98043 | 344 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 | 345 | "No response from %s, closing link", |
b3ebc7ab | 346 | client_p->name); |
212380e3 AC |
347 | ilog(L_SERVER, |
348 | "No response from %s, closing link", | |
349 | log_client_name(client_p, HIDE_IP)); | |
350 | } | |
5203cba5 | 351 | (void) snprintf(scratch, sizeof(scratch), |
212380e3 | 352 | "Ping timeout: %d seconds", |
e3354945 | 353 | (int) (rb_current_time() - client_p->localClient->lasttime)); |
212380e3 AC |
354 | |
355 | exit_client(client_p, client_p, &me, scratch); | |
356 | continue; | |
357 | } | |
358 | else if((client_p->flags & FLAGS_PINGSENT) == 0) | |
359 | { | |
360 | /* | |
361 | * if we havent PINGed the connection and we havent | |
362 | * heard from it in a while, PING it to make sure | |
363 | * it is still alive. | |
364 | */ | |
365 | client_p->flags |= FLAGS_PINGSENT; | |
366 | /* not nice but does the job */ | |
e3354945 | 367 | client_p->localClient->lasttime = rb_current_time() - ping; |
212380e3 AC |
368 | sendto_one(client_p, "PING :%s", me.name); |
369 | } | |
370 | } | |
371 | /* ping_timeout: */ | |
372 | ||
373 | } | |
374 | } | |
375 | ||
376 | /* | |
377 | * check_unknowns_list | |
378 | * | |
379 | * inputs - pointer to list of unknown clients | |
380 | * output - NONE | |
381 | * side effects - unknown clients get marked for termination after n seconds | |
382 | */ | |
383 | static void | |
330fc5c1 | 384 | check_unknowns_list(rb_dlink_list * list) |
212380e3 | 385 | { |
637c4932 | 386 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 387 | struct Client *client_p; |
35cf4c79 | 388 | int timeout; |
212380e3 | 389 | |
637c4932 | 390 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
391 | { |
392 | client_p = ptr->data; | |
393 | ||
394 | if(IsDead(client_p) || IsClosing(client_p)) | |
395 | continue; | |
396 | ||
6bb4fb83 JT |
397 | /* still has DNSbls to validate against */ |
398 | if(client_p->preClient != NULL && | |
399 | rb_dlink_list_length(&client_p->preClient->dnsbl_queries) > 0) | |
400 | continue; | |
401 | ||
212380e3 AC |
402 | /* |
403 | * Check UNKNOWN connections - if they have been in this state | |
404 | * for > 30s, close them. | |
405 | */ | |
406 | ||
35cf4c79 | 407 | timeout = IsAnyServer(client_p) ? ConfigFileEntry.connect_timeout : 30; |
e3354945 | 408 | if((rb_current_time() - client_p->localClient->firsttime) > timeout) |
35cf4c79 JT |
409 | { |
410 | if(IsAnyServer(client_p)) | |
411 | { | |
412 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
413 | "No response from %s, closing link", | |
b3ebc7ab | 414 | client_p->name); |
35cf4c79 JT |
415 | ilog(L_SERVER, |
416 | "No response from %s, closing link", | |
417 | log_client_name(client_p, HIDE_IP)); | |
418 | } | |
212380e3 | 419 | exit_client(client_p, client_p, &me, "Connection timed out"); |
35cf4c79 | 420 | } |
212380e3 AC |
421 | } |
422 | } | |
423 | ||
424 | static void | |
425 | notify_banned_client(struct Client *client_p, struct ConfItem *aconf, int ban) | |
426 | { | |
427 | static const char conn_closed[] = "Connection closed"; | |
428 | static const char d_lined[] = "D-lined"; | |
429 | static const char k_lined[] = "K-lined"; | |
212380e3 AC |
430 | const char *reason = NULL; |
431 | const char *exit_reason = conn_closed; | |
432 | ||
a12ad044 | 433 | if(ConfigFileEntry.kline_with_reason) |
212380e3 | 434 | { |
a12ad044 | 435 | reason = get_user_ban_reason(aconf); |
b52c2949 | 436 | exit_reason = reason; |
212380e3 AC |
437 | } |
438 | else | |
439 | { | |
405ae5ce | 440 | reason = aconf->status == D_LINED ? d_lined : k_lined; |
212380e3 AC |
441 | } |
442 | ||
443 | if(ban == D_LINED && !IsPerson(client_p)) | |
444 | sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined"); | |
445 | else | |
446 | sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP), | |
447 | me.name, client_p->name, reason); | |
55abcbb2 KB |
448 | |
449 | exit_client(client_p, client_p, &me, | |
212380e3 AC |
450 | EmptyString(ConfigFileEntry.kline_reason) ? exit_reason : |
451 | ConfigFileEntry.kline_reason); | |
452 | } | |
453 | ||
454 | /* | |
455 | * check_banned_lines | |
456 | * inputs - NONE | |
457 | * output - NONE | |
170703fe | 458 | * side effects - Check all connections for a pending k/dline against the |
212380e3 AC |
459 | * client, exit the client if found. |
460 | */ | |
461 | void | |
462 | check_banned_lines(void) | |
463 | { | |
1bb1f1b0 JT |
464 | check_dlines(); |
465 | check_klines(); | |
466 | check_xlines(); | |
212380e3 AC |
467 | } |
468 | ||
469 | /* check_klines_event() | |
470 | * | |
471 | * inputs - | |
472 | * outputs - | |
473 | * side effects - check_klines() is called, kline_queued unset | |
474 | */ | |
475 | void | |
476 | check_klines_event(void *unused) | |
477 | { | |
f66f0baa | 478 | kline_queued = false; |
212380e3 AC |
479 | check_klines(); |
480 | } | |
481 | ||
482 | /* check_klines | |
483 | * | |
484 | * inputs - | |
485 | * outputs - | |
486 | * side effects - all clients will be checked for klines | |
487 | */ | |
488 | void | |
489 | check_klines(void) | |
490 | { | |
491 | struct Client *client_p; | |
492 | struct ConfItem *aconf; | |
330fc5c1 | 493 | rb_dlink_node *ptr; |
637c4932 | 494 | rb_dlink_node *next_ptr; |
212380e3 | 495 | |
637c4932 | 496 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
497 | { |
498 | client_p = ptr->data; | |
499 | ||
500 | if(IsMe(client_p) || !IsPerson(client_p)) | |
501 | continue; | |
502 | ||
503 | if((aconf = find_kline(client_p)) != NULL) | |
504 | { | |
505 | if(IsExemptKline(client_p)) | |
506 | { | |
507 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
408024fa JT |
508 | "KLINE over-ruled for %s, client is kline_exempt [%s@%s]", |
509 | get_client_name(client_p, HIDE_IP), | |
510 | aconf->user, aconf->host); | |
212380e3 AC |
511 | continue; |
512 | } | |
513 | ||
514 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
515 | "KLINE active for %s", | |
516 | get_client_name(client_p, HIDE_IP)); | |
517 | ||
518 | notify_banned_client(client_p, aconf, K_LINED); | |
519 | continue; | |
520 | } | |
521 | } | |
522 | } | |
523 | ||
212380e3 AC |
524 | /* check_dlines() |
525 | * | |
526 | * inputs - | |
527 | * outputs - | |
528 | * side effects - all clients will be checked for dlines | |
529 | */ | |
530 | void | |
531 | check_dlines(void) | |
532 | { | |
533 | struct Client *client_p; | |
534 | struct ConfItem *aconf; | |
330fc5c1 | 535 | rb_dlink_node *ptr; |
637c4932 | 536 | rb_dlink_node *next_ptr; |
212380e3 | 537 | |
637c4932 | 538 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
539 | { |
540 | client_p = ptr->data; | |
541 | ||
542 | if(IsMe(client_p)) | |
543 | continue; | |
544 | ||
54ac8b60 | 545 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) |
212380e3 AC |
546 | { |
547 | if(aconf->status & CONF_EXEMPTDLINE) | |
548 | continue; | |
549 | ||
550 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
551 | "DLINE active for %s", | |
552 | get_client_name(client_p, HIDE_IP)); | |
553 | ||
554 | notify_banned_client(client_p, aconf, D_LINED); | |
555 | continue; | |
556 | } | |
557 | } | |
558 | ||
559 | /* dlines need to be checked against unknowns too */ | |
637c4932 | 560 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) |
212380e3 AC |
561 | { |
562 | client_p = ptr->data; | |
563 | ||
54ac8b60 | 564 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) |
212380e3 AC |
565 | { |
566 | if(aconf->status & CONF_EXEMPTDLINE) | |
567 | continue; | |
568 | ||
569 | notify_banned_client(client_p, aconf, D_LINED); | |
570 | } | |
571 | } | |
572 | } | |
573 | ||
574 | /* check_xlines | |
575 | * | |
576 | * inputs - | |
577 | * outputs - | |
578 | * side effects - all clients will be checked for xlines | |
579 | */ | |
580 | void | |
581 | check_xlines(void) | |
582 | { | |
583 | struct Client *client_p; | |
584 | struct ConfItem *aconf; | |
330fc5c1 | 585 | rb_dlink_node *ptr; |
637c4932 | 586 | rb_dlink_node *next_ptr; |
212380e3 | 587 | |
637c4932 | 588 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) |
212380e3 AC |
589 | { |
590 | client_p = ptr->data; | |
591 | ||
592 | if(IsMe(client_p) || !IsPerson(client_p)) | |
593 | continue; | |
594 | ||
595 | if((aconf = find_xline(client_p->info, 1)) != NULL) | |
596 | { | |
597 | if(IsExemptKline(client_p)) | |
598 | { | |
599 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
408024fa JT |
600 | "XLINE over-ruled for %s, client is kline_exempt [%s]", |
601 | get_client_name(client_p, HIDE_IP), | |
70ea02eb | 602 | aconf->host); |
212380e3 AC |
603 | continue; |
604 | } | |
605 | ||
606 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
607 | get_client_name(client_p, HIDE_IP)); | |
608 | ||
609 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
610 | continue; | |
611 | } | |
612 | } | |
613 | } | |
614 | ||
330692a1 KB |
615 | /* resv_nick_fnc |
616 | * | |
617 | * inputs - resv, reason, time | |
618 | * outputs - NONE | |
619 | * side effects - all local clients matching resv will be FNC'd | |
620 | */ | |
621 | void | |
622 | resv_nick_fnc(const char *mask, const char *reason, int temp_time) | |
623 | { | |
624 | struct Client *client_p, *target_p; | |
625 | rb_dlink_node *ptr; | |
626 | rb_dlink_node *next_ptr; | |
627 | char *nick; | |
628 | char note[NICKLEN+10]; | |
629 | ||
630 | if (!ConfigFileEntry.resv_fnc) | |
631 | return; | |
632 | ||
633 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
634 | { | |
635 | client_p = ptr->data; | |
636 | ||
637 | if(IsMe(client_p) || !IsPerson(client_p) || IsExemptResv(client_p)) | |
638 | continue; | |
639 | ||
07d3283f KB |
640 | /* Skip users that already have UID nicks. */ |
641 | if(IsDigit(client_p->name[0])) | |
642 | continue; | |
643 | ||
330692a1 KB |
644 | if(match_esc(mask, client_p->name)) |
645 | { | |
646 | nick = client_p->id; | |
647 | ||
648 | /* Tell opers. */ | |
649 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
650 | "RESV forced nick change for %s!%s@%s to %s; nick matched [%s] (%s)", | |
651 | client_p->name, client_p->username, client_p->host, nick, mask, reason); | |
652 | ||
653 | sendto_realops_snomask(SNO_NCHANGE, L_ALL, | |
654 | "Nick change: From %s to %s [%s@%s]", | |
655 | client_p->name, nick, client_p->username, client_p->host); | |
656 | ||
657 | /* Tell the user. */ | |
658 | if (temp_time > 0) | |
659 | { | |
660 | sendto_one_notice(client_p, | |
661 | ":*** Nick %s is temporarily unavailable on this server.", | |
662 | client_p->name); | |
663 | } | |
664 | else | |
665 | { | |
666 | sendto_one_notice(client_p, | |
667 | ":*** Nick %s is no longer available on this server.", | |
668 | client_p->name); | |
669 | } | |
670 | ||
671 | /* Do all of the nick-changing gymnastics. */ | |
672 | client_p->tsinfo = rb_current_time(); | |
b47f8a4f | 673 | whowas_add_history(client_p, 1); |
330692a1 | 674 | |
07d3283f KB |
675 | monitor_signoff(client_p); |
676 | ||
330692a1 KB |
677 | invalidate_bancache_user(client_p); |
678 | ||
583f064f | 679 | sendto_common_channels_local(client_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s", |
330692a1 KB |
680 | client_p->name, client_p->username, client_p->host, nick); |
681 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
682 | use_id(client_p), nick, (long) client_p->tsinfo); | |
683 | ||
684 | del_from_client_hash(client_p->name, client_p); | |
685 | rb_strlcpy(client_p->name, nick, sizeof(client_p->name)); | |
686 | add_to_client_hash(nick, client_p); | |
687 | ||
07d3283f KB |
688 | monitor_signon(client_p); |
689 | ||
330692a1 KB |
690 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) |
691 | { | |
692 | target_p = ptr->data; | |
693 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); | |
694 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
695 | } | |
696 | ||
5203cba5 | 697 | snprintf(note, sizeof(note), "Nick: %s", nick); |
330692a1 KB |
698 | rb_note(client_p->localClient->F, note); |
699 | } | |
700 | } | |
701 | } | |
702 | ||
212380e3 AC |
703 | /* |
704 | * update_client_exit_stats | |
705 | * | |
706 | * input - pointer to client | |
707 | * output - NONE | |
55abcbb2 | 708 | * side effects - |
212380e3 AC |
709 | */ |
710 | static void | |
711 | update_client_exit_stats(struct Client *client_p) | |
712 | { | |
713 | if(IsServer(client_p)) | |
714 | { | |
715 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
716 | "Server %s split from %s", | |
717 | client_p->name, client_p->servptr->name); | |
718 | if(HasSentEob(client_p)) | |
719 | eob_count--; | |
720 | } | |
721 | else if(IsClient(client_p)) | |
722 | { | |
723 | --Count.total; | |
724 | if(IsOper(client_p)) | |
725 | --Count.oper; | |
726 | if(IsInvisible(client_p)) | |
727 | --Count.invisi; | |
728 | } | |
729 | ||
730 | if(splitchecking && !splitmode) | |
731 | check_splitmode(NULL); | |
732 | } | |
733 | ||
734 | /* | |
735 | * release_client_state | |
736 | * | |
737 | * input - pointer to client to release | |
738 | * output - NONE | |
55abcbb2 | 739 | * side effects - |
212380e3 AC |
740 | */ |
741 | static void | |
742 | release_client_state(struct Client *client_p) | |
743 | { | |
744 | if(client_p->user != NULL) | |
745 | { | |
746 | free_user(client_p->user, client_p); /* try this here */ | |
747 | } | |
748 | if(client_p->serv) | |
749 | { | |
750 | if(client_p->serv->user != NULL) | |
751 | free_user(client_p->serv->user, client_p); | |
752 | if(client_p->serv->fullcaps) | |
637c4932 VY |
753 | rb_free(client_p->serv->fullcaps); |
754 | rb_free(client_p->serv); | |
212380e3 AC |
755 | } |
756 | } | |
757 | ||
758 | /* | |
759 | * remove_client_from_list | |
760 | * inputs - point to client to remove | |
761 | * output - NONE | |
762 | * side effects - taken the code from ExitOneClient() for this | |
763 | * and placed it here. - avalon | |
764 | */ | |
765 | static void | |
766 | remove_client_from_list(struct Client *client_p) | |
767 | { | |
768 | s_assert(NULL != client_p); | |
769 | ||
770 | if(client_p == NULL) | |
771 | return; | |
772 | ||
773 | /* A client made with make_client() | |
774 | * is on the unknown_list until removed. | |
775 | * If it =does= happen to exit before its removed from that list | |
776 | * and its =not= on the global_client_list, it will core here. | |
777 | * short circuit that case now -db | |
778 | */ | |
779 | if(client_p->node.prev == NULL && client_p->node.next == NULL) | |
780 | return; | |
781 | ||
330fc5c1 | 782 | rb_dlinkDelete(&client_p->node, &global_client_list); |
212380e3 AC |
783 | |
784 | update_client_exit_stats(client_p); | |
785 | } | |
786 | ||
787 | ||
2d28539c JT |
788 | /* clean_nick() |
789 | * | |
790 | * input - nickname to check, flag for nick from local client | |
791 | * output - 0 if erroneous, else 1 | |
792 | * side effects - | |
793 | */ | |
794 | int | |
795 | clean_nick(const char *nick, int loc_client) | |
796 | { | |
797 | int len = 0; | |
798 | ||
799 | /* nicks cant start with a digit or -, and must have a length */ | |
800 | if(*nick == '-' || *nick == '\0') | |
801 | return 0; | |
802 | ||
803 | if(loc_client && IsDigit(*nick)) | |
804 | return 0; | |
805 | ||
806 | for(; *nick; nick++) | |
807 | { | |
808 | len++; | |
809 | if(!IsNickChar(*nick)) | |
810 | return 0; | |
811 | } | |
812 | ||
813 | /* nicklen is +1 */ | |
814 | if(len >= NICKLEN && (unsigned int)len >= ConfigFileEntry.nicklen) | |
815 | return 0; | |
816 | ||
817 | return 1; | |
818 | } | |
819 | ||
212380e3 AC |
820 | /* |
821 | * find_person - find person by (nick)name. | |
822 | * inputs - pointer to name | |
823 | * output - return client pointer | |
824 | * side effects - | |
825 | */ | |
826 | struct Client * | |
827 | find_person(const char *name) | |
828 | { | |
829 | struct Client *c2ptr; | |
830 | ||
831 | c2ptr = find_client(name); | |
832 | ||
833 | if(c2ptr && IsPerson(c2ptr)) | |
834 | return (c2ptr); | |
835 | return (NULL); | |
836 | } | |
837 | ||
838 | struct Client * | |
839 | find_named_person(const char *name) | |
840 | { | |
841 | struct Client *c2ptr; | |
842 | ||
843 | c2ptr = find_named_client(name); | |
844 | ||
845 | if(c2ptr && IsPerson(c2ptr)) | |
846 | return (c2ptr); | |
847 | return (NULL); | |
848 | } | |
849 | ||
850 | ||
851 | /* | |
55abcbb2 KB |
852 | * find_chasing - find the client structure for a nick name (user) |
853 | * using history mechanism if necessary. If the client is not found, | |
212380e3 AC |
854 | * an error message (NO SUCH NICK) is generated. If the client was found |
855 | * through the history, chasing will be 1 and otherwise 0. | |
856 | */ | |
857 | struct Client * | |
858 | find_chasing(struct Client *source_p, const char *user, int *chasing) | |
859 | { | |
860 | struct Client *who; | |
861 | ||
862 | if(MyClient(source_p)) | |
863 | who = find_named_person(user); | |
864 | else | |
865 | who = find_person(user); | |
866 | ||
867 | if(chasing) | |
868 | *chasing = 0; | |
869 | ||
870 | if(who || IsDigit(*user)) | |
871 | return who; | |
872 | ||
b47f8a4f | 873 | if(!(who = whowas_get_history(user, (long) KILLCHASETIMELIMIT))) |
212380e3 AC |
874 | { |
875 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
876 | form_str(ERR_NOSUCHNICK), user); | |
877 | return (NULL); | |
878 | } | |
879 | if(chasing) | |
880 | *chasing = 1; | |
881 | return who; | |
882 | } | |
883 | ||
884 | /* | |
885 | * get_client_name - Return the name of the client | |
886 | * for various tracking and | |
887 | * admin purposes. The main purpose of this function is to | |
888 | * return the "socket host" name of the client, if that | |
889 | * differs from the advertised name (other than case). | |
890 | * But, this can be used to any client structure. | |
891 | * | |
892 | * NOTE 1: | |
893 | * Watch out the allocation of "nbuf", if either source_p->name | |
894 | * or source_p->sockhost gets changed into pointers instead of | |
895 | * directly allocated within the structure... | |
896 | * | |
897 | * NOTE 2: | |
898 | * Function return either a pointer to the structure (source_p) or | |
899 | * to internal buffer (nbuf). *NEVER* use the returned pointer | |
900 | * to modify what it points!!! | |
901 | */ | |
902 | ||
903 | const char * | |
904 | get_client_name(struct Client *client, int showip) | |
905 | { | |
906 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
907 | ||
908 | s_assert(NULL != client); | |
909 | if(client == NULL) | |
910 | return NULL; | |
911 | ||
912 | if(MyConnect(client)) | |
913 | { | |
914 | if(!irccmp(client->name, client->host)) | |
915 | return client->name; | |
916 | ||
55abcbb2 | 917 | if(ConfigFileEntry.hide_spoof_ips && |
212380e3 AC |
918 | showip == SHOW_IP && IsIPSpoof(client)) |
919 | showip = MASK_IP; | |
212380e3 AC |
920 | if(IsAnyServer(client)) |
921 | showip = MASK_IP; | |
212380e3 AC |
922 | |
923 | /* And finally, let's get the host information, ip or name */ | |
924 | switch (showip) | |
925 | { | |
926 | case SHOW_IP: | |
5203cba5 | 927 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", |
55abcbb2 | 928 | client->name, client->username, |
212380e3 AC |
929 | client->sockhost); |
930 | break; | |
931 | case MASK_IP: | |
5203cba5 | 932 | snprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", |
212380e3 AC |
933 | client->name, client->username); |
934 | break; | |
935 | default: | |
5203cba5 | 936 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", |
212380e3 AC |
937 | client->name, client->username, client->host); |
938 | } | |
939 | return nbuf; | |
940 | } | |
941 | ||
55abcbb2 | 942 | /* As pointed out by Adel Mezibra |
212380e3 AC |
943 | * Neph|l|m@EFnet. Was missing a return here. |
944 | */ | |
945 | return client->name; | |
946 | } | |
55abcbb2 | 947 | |
212380e3 AC |
948 | /* log_client_name() |
949 | * | |
950 | * This version is the same as get_client_name, but doesnt contain the | |
951 | * code that will hide IPs always. This should be used for logfiles. | |
952 | */ | |
953 | const char * | |
954 | log_client_name(struct Client *target_p, int showip) | |
955 | { | |
956 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
957 | ||
958 | if(target_p == NULL) | |
959 | return NULL; | |
960 | ||
961 | if(MyConnect(target_p)) | |
962 | { | |
963 | if(irccmp(target_p->name, target_p->host) == 0) | |
964 | return target_p->name; | |
965 | ||
966 | switch (showip) | |
967 | { | |
968 | case SHOW_IP: | |
5203cba5 | 969 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, |
212380e3 AC |
970 | target_p->username, target_p->sockhost); |
971 | break; | |
972 | ||
212380e3 | 973 | default: |
5203cba5 | 974 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, |
212380e3 AC |
975 | target_p->username, target_p->host); |
976 | } | |
977 | ||
978 | return nbuf; | |
979 | } | |
980 | ||
981 | return target_p->name; | |
982 | } | |
983 | ||
984 | /* is_remote_connect - Returns whether a server was /connect'ed by a remote | |
985 | * oper (send notices netwide) */ | |
986 | int | |
987 | is_remote_connect(struct Client *client_p) | |
988 | { | |
989 | struct Client *oper; | |
990 | ||
991 | if (client_p->serv == NULL) | |
992 | return FALSE; | |
993 | oper = find_named_person(client_p->serv->by); | |
994 | return oper != NULL && IsOper(oper) && !MyConnect(oper); | |
995 | } | |
996 | ||
997 | static void | |
998 | free_exited_clients(void *unused) | |
999 | { | |
330fc5c1 | 1000 | rb_dlink_node *ptr, *next; |
212380e3 AC |
1001 | struct Client *target_p; |
1002 | ||
5cefa1d6 | 1003 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_list.head) |
212380e3 AC |
1004 | { |
1005 | target_p = ptr->data; | |
1006 | ||
1007 | #ifdef DEBUG_EXITED_CLIENTS | |
1008 | { | |
1009 | struct abort_client *abt; | |
330fc5c1 | 1010 | rb_dlink_node *aptr; |
212380e3 AC |
1011 | int found = 0; |
1012 | ||
5cefa1d6 | 1013 | RB_DLINK_FOREACH(aptr, abort_list.head) |
212380e3 AC |
1014 | { |
1015 | abt = aptr->data; | |
1016 | if(abt->client == target_p) | |
1017 | { | |
1018 | s_assert(0); | |
55abcbb2 | 1019 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 AC |
1020 | "On abort_list: %s stat: %u flags: %u/%u handler: %c", |
1021 | target_p->name, (unsigned int) target_p->status, | |
1022 | target_p->flags, target_p->flags2, target_p->handler); | |
1023 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1024 | "Please report this to the charybdis developers!"); |
212380e3 AC |
1025 | found++; |
1026 | } | |
1027 | } | |
1028 | ||
1029 | if(found) | |
1030 | { | |
330fc5c1 | 1031 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1032 | continue; |
1033 | } | |
1034 | } | |
1035 | #endif | |
1036 | ||
1037 | if(ptr->data == NULL) | |
1038 | { | |
1039 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1040 | "Warning: null client on dead_list!"); | |
330fc5c1 | 1041 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1042 | continue; |
1043 | } | |
1044 | release_client_state(target_p); | |
1045 | free_client(target_p); | |
330fc5c1 | 1046 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1047 | } |
1048 | ||
1049 | #ifdef DEBUG_EXITED_CLIENTS | |
5cefa1d6 | 1050 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_remote_list.head) |
212380e3 AC |
1051 | { |
1052 | target_p = ptr->data; | |
1053 | ||
1054 | if(ptr->data == NULL) | |
1055 | { | |
1056 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1057 | "Warning: null client on dead_list!"); | |
330fc5c1 | 1058 | rb_dlinkDestroy(ptr, &dead_list); |
212380e3 AC |
1059 | continue; |
1060 | } | |
1061 | release_client_state(target_p); | |
1062 | free_client(target_p); | |
330fc5c1 | 1063 | rb_dlinkDestroy(ptr, &dead_remote_list); |
212380e3 AC |
1064 | } |
1065 | #endif | |
55abcbb2 | 1066 | |
212380e3 AC |
1067 | } |
1068 | ||
55abcbb2 | 1069 | /* |
212380e3 | 1070 | ** Remove all clients that depend on source_p; assumes all (S)QUITs have |
55abcbb2 KB |
1071 | ** already been sent. we make sure to exit a server's dependent clients |
1072 | ** and servers before the server itself; exit_one_client takes care of | |
212380e3 | 1073 | ** actually removing things off llists. tweaked from +CSr31 -orabidoo |
cbeab4bc | 1074 | */ |
212380e3 AC |
1075 | /* |
1076 | * added sanity test code.... source_p->serv might be NULL... | |
1077 | */ | |
1078 | static void | |
1079 | recurse_remove_clients(struct Client *source_p, const char *comment) | |
1080 | { | |
1081 | struct Client *target_p; | |
330fc5c1 | 1082 | rb_dlink_node *ptr, *ptr_next; |
212380e3 AC |
1083 | |
1084 | if(IsMe(source_p)) | |
1085 | return; | |
1086 | ||
1087 | if(source_p->serv == NULL) /* oooops. uh this is actually a major bug */ | |
1088 | return; | |
1089 | ||
1090 | /* this is very ugly, but it saves cpu :P */ | |
1091 | if(ConfigFileEntry.nick_delay > 0) | |
1092 | { | |
5cefa1d6 | 1093 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) |
212380e3 AC |
1094 | { |
1095 | target_p = ptr->data; | |
1096 | target_p->flags |= FLAGS_KILLED; | |
1097 | add_nd_entry(target_p->name); | |
1098 | ||
1099 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1100 | exit_remote_client(NULL, target_p, &me, comment); | |
1101 | } | |
1102 | } | |
1103 | else | |
1104 | { | |
5cefa1d6 | 1105 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) |
212380e3 AC |
1106 | { |
1107 | target_p = ptr->data; | |
1108 | target_p->flags |= FLAGS_KILLED; | |
1109 | ||
1110 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1111 | exit_remote_client(NULL, target_p, &me, comment); | |
1112 | } | |
55abcbb2 | 1113 | } |
212380e3 | 1114 | |
5cefa1d6 | 1115 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) |
212380e3 AC |
1116 | { |
1117 | target_p = ptr->data; | |
1118 | recurse_remove_clients(target_p, comment); | |
1119 | qs_server(NULL, target_p, &me, comment); | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | /* | |
1124 | ** Remove *everything* that depends on source_p, from all lists, and sending | |
856df9a3 | 1125 | ** all necessary SQUITs. source_p itself is still on the lists, |
212380e3 | 1126 | ** and its SQUITs have been sent except for the upstream one -orabidoo |
cbeab4bc | 1127 | */ |
212380e3 AC |
1128 | static void |
1129 | remove_dependents(struct Client *client_p, | |
1130 | struct Client *source_p, | |
1131 | struct Client *from, const char *comment, const char *comment1) | |
1132 | { | |
1133 | struct Client *to; | |
330fc5c1 | 1134 | rb_dlink_node *ptr, *next; |
212380e3 | 1135 | |
5cefa1d6 | 1136 | RB_DLINK_FOREACH_SAFE(ptr, next, serv_list.head) |
212380e3 AC |
1137 | { |
1138 | to = ptr->data; | |
1139 | ||
856df9a3 | 1140 | if(IsMe(to) || to == source_p->from || to == client_p) |
212380e3 AC |
1141 | continue; |
1142 | ||
856df9a3 | 1143 | sendto_one(to, "SQUIT %s :%s", get_id(source_p, to), comment); |
212380e3 AC |
1144 | } |
1145 | ||
1146 | recurse_remove_clients(source_p, comment1); | |
1147 | } | |
1148 | ||
1149 | void | |
1150 | exit_aborted_clients(void *unused) | |
1151 | { | |
1152 | struct abort_client *abt; | |
330fc5c1 | 1153 | rb_dlink_node *ptr, *next; |
5cefa1d6 | 1154 | RB_DLINK_FOREACH_SAFE(ptr, next, abort_list.head) |
212380e3 AC |
1155 | { |
1156 | abt = ptr->data; | |
1157 | ||
1158 | #ifdef DEBUG_EXITED_CLIENTS | |
1159 | { | |
330fc5c1 | 1160 | if(rb_dlinkFind(abt->client, &dead_list)) |
212380e3 AC |
1161 | { |
1162 | s_assert(0); | |
55abcbb2 | 1163 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
212380e3 AC |
1164 | "On dead_list: %s stat: %u flags: %u/%u handler: %c", |
1165 | abt->client->name, (unsigned int) abt->client->status, | |
1166 | abt->client->flags, abt->client->flags2, abt->client->handler); | |
1167 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1168 | "Please report this to the charybdis developers!"); |
212380e3 AC |
1169 | continue; |
1170 | } | |
1171 | } | |
1172 | #endif | |
1173 | ||
1174 | s_assert(*((unsigned long*)abt->client) != 0xdeadbeef); /* This is lame but its a debug thing */ | |
330fc5c1 | 1175 | rb_dlinkDelete(ptr, &abort_list); |
212380e3 AC |
1176 | |
1177 | if(IsAnyServer(abt->client)) | |
1178 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1179 | "Closing link to %s: %s", | |
b3ebc7ab | 1180 | abt->client->name, abt->notice); |
212380e3 AC |
1181 | |
1182 | /* its no longer on abort list - we *must* remove | |
1183 | * FLAGS_CLOSING otherwise exit_client() will not run --fl | |
1184 | */ | |
1185 | abt->client->flags &= ~FLAGS_CLOSING; | |
1186 | exit_client(abt->client, abt->client, &me, abt->notice); | |
637c4932 | 1187 | rb_free(abt); |
212380e3 AC |
1188 | } |
1189 | } | |
1190 | ||
1191 | ||
1192 | /* | |
1193 | * dead_link - Adds client to a list of clients that need an exit_client() | |
212380e3 AC |
1194 | */ |
1195 | void | |
cef7a7bc | 1196 | dead_link(struct Client *client_p, int sendqex) |
212380e3 AC |
1197 | { |
1198 | struct abort_client *abt; | |
1199 | ||
1200 | s_assert(!IsMe(client_p)); | |
1201 | if(IsDead(client_p) || IsClosing(client_p) || IsMe(client_p)) | |
1202 | return; | |
1203 | ||
eddc2ab6 | 1204 | abt = (struct abort_client *) rb_malloc(sizeof(struct abort_client)); |
212380e3 | 1205 | |
cef7a7bc | 1206 | if(sendqex) |
f427c8b0 | 1207 | rb_strlcpy(abt->notice, "Max SendQ exceeded", sizeof(abt->notice)); |
212380e3 | 1208 | else |
5203cba5 | 1209 | snprintf(abt->notice, sizeof(abt->notice), "Write error: %s", strerror(errno)); |
212380e3 AC |
1210 | |
1211 | abt->client = client_p; | |
1212 | SetIOError(client_p); | |
1213 | SetDead(client_p); | |
1214 | SetClosing(client_p); | |
330fc5c1 | 1215 | rb_dlinkAdd(abt, &abt->node, &abort_list); |
212380e3 AC |
1216 | } |
1217 | ||
1218 | ||
1219 | /* This does the remove of the user from channels..local or remote */ | |
1220 | static inline void | |
1221 | exit_generic_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1222 | const char *comment) | |
1223 | { | |
637c4932 | 1224 | rb_dlink_node *ptr, *next_ptr; |
212380e3 AC |
1225 | |
1226 | if(IsOper(source_p)) | |
330fc5c1 | 1227 | rb_dlinkFindDestroy(source_p, &oper_list); |
212380e3 | 1228 | |
583f064f | 1229 | sendto_common_channels_local(source_p, NOCAPS, NOCAPS, ":%s!%s@%s QUIT :%s", |
212380e3 AC |
1230 | source_p->name, |
1231 | source_p->username, source_p->host, comment); | |
1232 | ||
1233 | remove_user_from_channels(source_p); | |
1234 | ||
1235 | /* Should not be in any channels now */ | |
1236 | s_assert(source_p->user->channel.head == NULL); | |
1237 | ||
1238 | /* Clean up invitefield */ | |
637c4932 | 1239 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->user->invited.head) |
212380e3 AC |
1240 | { |
1241 | del_invite(ptr->data, source_p); | |
1242 | } | |
1243 | ||
1244 | /* Clean up allow lists */ | |
1245 | del_all_accepts(source_p); | |
1246 | ||
b47f8a4f AC |
1247 | whowas_add_history(source_p, 0); |
1248 | whowas_off_history(source_p); | |
212380e3 AC |
1249 | |
1250 | monitor_signoff(source_p); | |
1251 | ||
1252 | if(has_id(source_p)) | |
1253 | del_from_id_hash(source_p->id, source_p); | |
1254 | ||
1255 | del_from_hostname_hash(source_p->orighost, source_p); | |
1256 | del_from_client_hash(source_p->name, source_p); | |
1257 | remove_client_from_list(source_p); | |
1258 | } | |
1259 | ||
55abcbb2 | 1260 | /* |
212380e3 AC |
1261 | * Assumes IsPerson(source_p) && !MyConnect(source_p) |
1262 | */ | |
1263 | ||
1264 | static int | |
1265 | exit_remote_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1266 | const char *comment) | |
1267 | { | |
1268 | exit_generic_client(client_p, source_p, from, comment); | |
55abcbb2 | 1269 | |
212380e3 AC |
1270 | if(source_p->servptr && source_p->servptr->serv) |
1271 | { | |
330fc5c1 | 1272 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users); |
212380e3 AC |
1273 | } |
1274 | ||
1275 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1276 | { | |
1277 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1278 | ":%s QUIT :%s", use_id(source_p), comment); | |
212380e3 AC |
1279 | } |
1280 | ||
1281 | SetDead(source_p); | |
1282 | #ifdef DEBUG_EXITED_CLIENTS | |
330fc5c1 | 1283 | rb_dlinkAddAlloc(source_p, &dead_remote_list); |
212380e3 | 1284 | #else |
330fc5c1 | 1285 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1286 | #endif |
1287 | return(CLIENT_EXITED); | |
1288 | } | |
1289 | ||
1290 | /* | |
07554369 | 1291 | * This assumes IsUnknown(source_p) == true and MyConnect(source_p) == true |
212380e3 AC |
1292 | */ |
1293 | ||
1294 | static int | |
1295 | exit_unknown_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1296 | const char *comment) | |
1297 | { | |
1298 | delete_auth_queries(source_p); | |
7fc09bc4 | 1299 | abort_blacklist_queries(source_p); |
330fc5c1 | 1300 | rb_dlinkDelete(&source_p->localClient->tnode, &unknown_list); |
212380e3 AC |
1301 | |
1302 | if(!IsIOError(source_p)) | |
dd12a19c JT |
1303 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", |
1304 | source_p->user != NULL ? source_p->host : "127.0.0.1", | |
1305 | comment); | |
212380e3 AC |
1306 | |
1307 | close_connection(source_p); | |
1308 | ||
1309 | if(has_id(source_p)) | |
1310 | del_from_id_hash(source_p->id, source_p); | |
1311 | ||
1312 | del_from_hostname_hash(source_p->host, source_p); | |
1313 | del_from_client_hash(source_p->name, source_p); | |
1314 | remove_client_from_list(source_p); | |
212380e3 | 1315 | SetDead(source_p); |
330fc5c1 | 1316 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1317 | |
1318 | /* Note that we don't need to add unknowns to the dead_list */ | |
1319 | return(CLIENT_EXITED); | |
1320 | } | |
1321 | ||
1322 | static int | |
55abcbb2 | 1323 | exit_remote_server(struct Client *client_p, struct Client *source_p, struct Client *from, |
212380e3 AC |
1324 | const char *comment) |
1325 | { | |
1326 | static char comment1[(HOSTLEN*2)+2]; | |
1327 | static char newcomment[BUFSIZE]; | |
1328 | struct Client *target_p; | |
55abcbb2 | 1329 | |
212380e3 AC |
1330 | if(ConfigServerHide.flatten_links) |
1331 | strcpy(comment1, "*.net *.split"); | |
1332 | else | |
1333 | { | |
66c8fdd2 | 1334 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1335 | strcat(comment1, " "); |
1336 | strcat(comment1, source_p->name); | |
1337 | } | |
1338 | if (IsPerson(from)) | |
5203cba5 | 1339 | snprintf(newcomment, sizeof(newcomment), "by %s: %s", |
212380e3 AC |
1340 | from->name, comment); |
1341 | ||
1342 | if(source_p->serv != NULL) | |
1343 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1344 | ||
1345 | if(source_p->servptr && source_p->servptr->serv) | |
330fc5c1 | 1346 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1347 | else |
1348 | s_assert(0); | |
1349 | ||
330fc5c1 | 1350 | rb_dlinkFindDestroy(source_p, &global_serv_list); |
212380e3 | 1351 | target_p = source_p->from; |
55abcbb2 | 1352 | |
212380e3 AC |
1353 | if(target_p != NULL && IsServer(target_p) && target_p != client_p && |
1354 | !IsMe(target_p) && (source_p->flags & FLAGS_KILLED) == 0) | |
1355 | { | |
55abcbb2 | 1356 | sendto_one(target_p, ":%s SQUIT %s :%s", |
212380e3 AC |
1357 | get_id(from, target_p), get_id(source_p, target_p), |
1358 | comment); | |
1359 | } | |
1360 | ||
1361 | if(has_id(source_p)) | |
1362 | del_from_id_hash(source_p->id, source_p); | |
1363 | ||
1364 | del_from_client_hash(source_p->name, source_p); | |
55abcbb2 | 1365 | remove_client_from_list(source_p); |
994544c2 | 1366 | scache_split(source_p->serv->nameinfo); |
55abcbb2 | 1367 | |
212380e3 AC |
1368 | SetDead(source_p); |
1369 | #ifdef DEBUG_EXITED_CLIENTS | |
330fc5c1 | 1370 | rb_dlinkAddAlloc(source_p, &dead_remote_list); |
212380e3 | 1371 | #else |
330fc5c1 | 1372 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1373 | #endif |
1374 | return 0; | |
1375 | } | |
1376 | ||
1377 | static int | |
55abcbb2 | 1378 | qs_server(struct Client *client_p, struct Client *source_p, struct Client *from, |
212380e3 AC |
1379 | const char *comment) |
1380 | { | |
212380e3 | 1381 | if(source_p->servptr && source_p->servptr->serv) |
330fc5c1 | 1382 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1383 | else |
1384 | s_assert(0); | |
1385 | ||
330fc5c1 | 1386 | rb_dlinkFindDestroy(source_p, &global_serv_list); |
55abcbb2 | 1387 | |
212380e3 AC |
1388 | if(has_id(source_p)) |
1389 | del_from_id_hash(source_p->id, source_p); | |
1390 | ||
1391 | del_from_client_hash(source_p->name, source_p); | |
55abcbb2 | 1392 | remove_client_from_list(source_p); |
19807b5b | 1393 | scache_split(source_p->serv->nameinfo); |
55abcbb2 | 1394 | |
212380e3 | 1395 | SetDead(source_p); |
55abcbb2 | 1396 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1397 | return 0; |
1398 | } | |
1399 | ||
1400 | static int | |
55abcbb2 | 1401 | exit_local_server(struct Client *client_p, struct Client *source_p, struct Client *from, |
212380e3 AC |
1402 | const char *comment) |
1403 | { | |
1404 | static char comment1[(HOSTLEN*2)+2]; | |
1405 | static char newcomment[BUFSIZE]; | |
1406 | unsigned int sendk, recvk; | |
55abcbb2 | 1407 | |
330fc5c1 AC |
1408 | rb_dlinkDelete(&source_p->localClient->tnode, &serv_list); |
1409 | rb_dlinkFindDestroy(source_p, &global_serv_list); | |
55abcbb2 | 1410 | |
212380e3 AC |
1411 | sendk = source_p->localClient->sendK; |
1412 | recvk = source_p->localClient->receiveK; | |
1413 | ||
1414 | /* Always show source here, so the server notices show | |
1415 | * which side initiated the split -- jilles | |
1416 | */ | |
5203cba5 | 1417 | snprintf(newcomment, sizeof(newcomment), "by %s: %s", |
212380e3 AC |
1418 | from == source_p ? me.name : from->name, comment); |
1419 | if (!IsIOError(source_p)) | |
1420 | sendto_one(source_p, "SQUIT %s :%s", use_id(source_p), | |
1421 | newcomment); | |
1422 | if(client_p != NULL && source_p != client_p && !IsIOError(source_p)) | |
1423 | { | |
1424 | sendto_one(source_p, "ERROR :Closing Link: 127.0.0.1 %s (%s)", | |
1425 | source_p->name, comment); | |
1426 | } | |
55abcbb2 | 1427 | |
212380e3 | 1428 | if(source_p->servptr && source_p->servptr->serv) |
330fc5c1 | 1429 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
212380e3 AC |
1430 | else |
1431 | s_assert(0); | |
1432 | ||
1433 | ||
1434 | close_connection(source_p); | |
55abcbb2 | 1435 | |
212380e3 AC |
1436 | if(ConfigServerHide.flatten_links) |
1437 | strcpy(comment1, "*.net *.split"); | |
1438 | else | |
1439 | { | |
66c8fdd2 | 1440 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1441 | strcat(comment1, " "); |
1442 | strcat(comment1, source_p->name); | |
1443 | } | |
1444 | ||
1445 | if(source_p->serv != NULL) | |
1446 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1447 | ||
1448 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s was connected" | |
1449 | " for %ld seconds. %d/%d sendK/recvK.", | |
adc6cc42 | 1450 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); |
212380e3 AC |
1451 | |
1452 | ilog(L_SERVER, "%s was connected for %ld seconds. %d/%d sendK/recvK.", | |
adc6cc42 | 1453 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); |
55abcbb2 | 1454 | |
212380e3 AC |
1455 | if(has_id(source_p)) |
1456 | del_from_id_hash(source_p->id, source_p); | |
1457 | ||
1458 | del_from_client_hash(source_p->name, source_p); | |
1459 | remove_client_from_list(source_p); | |
994544c2 | 1460 | scache_split(source_p->serv->nameinfo); |
55abcbb2 | 1461 | |
212380e3 | 1462 | SetDead(source_p); |
330fc5c1 | 1463 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1464 | return 0; |
1465 | } | |
1466 | ||
1467 | ||
55abcbb2 | 1468 | /* |
07554369 | 1469 | * This assumes IsPerson(source_p) == true && MyConnect(source_p) == true |
212380e3 AC |
1470 | */ |
1471 | ||
1472 | static int | |
1473 | exit_local_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1474 | const char *comment) | |
1475 | { | |
1476 | unsigned long on_for; | |
08d75d97 | 1477 | char tbuf[26]; |
212380e3 AC |
1478 | |
1479 | exit_generic_client(client_p, source_p, from, comment); | |
1480 | clear_monitor(source_p); | |
1481 | ||
1482 | s_assert(IsPerson(source_p)); | |
330fc5c1 AC |
1483 | rb_dlinkDelete(&source_p->localClient->tnode, &lclient_list); |
1484 | rb_dlinkDelete(&source_p->lnode, &me.serv->users); | |
212380e3 AC |
1485 | |
1486 | if(IsOper(source_p)) | |
330fc5c1 | 1487 | rb_dlinkFindDestroy(source_p, &local_oper_list); |
212380e3 AC |
1488 | |
1489 | sendto_realops_snomask(SNO_CCONN, L_ALL, | |
1490 | "Client exiting: %s (%s@%s) [%s] [%s]", | |
1491 | source_p->name, | |
1492 | source_p->username, source_p->host, comment, | |
1493 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255"); | |
1494 | ||
1495 | sendto_realops_snomask(SNO_CCONNEXT, L_ALL, | |
1496 | "CLIEXIT %s %s %s %s 0 %s", | |
1497 | source_p->name, source_p->username, source_p->host, | |
1498 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255", | |
1499 | comment); | |
1500 | ||
e3354945 | 1501 | on_for = rb_current_time() - source_p->localClient->firsttime; |
212380e3 | 1502 | |
9641f156 | 1503 | ilog(L_USER, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d", |
08d75d97 | 1504 | rb_ctime(rb_current_time(), tbuf, sizeof(tbuf)), on_for / 3600, |
212380e3 AC |
1505 | (on_for % 3600) / 60, on_for % 60, |
1506 | source_p->name, source_p->username, source_p->host, | |
9641f156 | 1507 | source_p->sockhost, |
212380e3 AC |
1508 | source_p->localClient->sendK, source_p->localClient->receiveK); |
1509 | ||
1510 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", source_p->host, comment); | |
1511 | close_connection(source_p); | |
1512 | ||
1513 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1514 | { | |
1515 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1516 | ":%s QUIT :%s", use_id(source_p), comment); | |
212380e3 AC |
1517 | } |
1518 | ||
1519 | SetDead(source_p); | |
330fc5c1 | 1520 | rb_dlinkAddAlloc(source_p, &dead_list); |
212380e3 AC |
1521 | return(CLIENT_EXITED); |
1522 | } | |
1523 | ||
1524 | ||
1525 | /* | |
1526 | ** exit_client - This is old "m_bye". Name changed, because this is not a | |
1527 | ** protocol function, but a general server utility function. | |
1528 | ** | |
1529 | ** This function exits a client of *any* type (user, server, etc) | |
1530 | ** from this server. Also, this generates all necessary prototol | |
1531 | ** messages that this exit may cause. | |
1532 | ** | |
1533 | ** 1) If the client is a local client, then this implicitly | |
1534 | ** exits all other clients depending on this connection (e.g. | |
1535 | ** remote clients having 'from'-field that points to this. | |
1536 | ** | |
1537 | ** 2) If the client is a remote client, then only this is exited. | |
1538 | ** | |
1539 | ** For convenience, this function returns a suitable value for | |
1540 | ** m_function return value: | |
1541 | ** | |
1542 | ** CLIENT_EXITED if (client_p == source_p) | |
1543 | ** 0 if (client_p != source_p) | |
cbeab4bc | 1544 | */ |
212380e3 AC |
1545 | int |
1546 | exit_client(struct Client *client_p, /* The local client originating the | |
1547 | * exit or NULL, if this exit is | |
1548 | * generated by this server for | |
1549 | * internal reasons. | |
1550 | * This will not get any of the | |
1551 | * generated messages. */ | |
1552 | struct Client *source_p, /* Client exiting */ | |
1553 | struct Client *from, /* Client firing off this Exit, | |
1554 | * never NULL! */ | |
1555 | const char *comment /* Reason for the exit */ | |
1556 | ) | |
1557 | { | |
1558 | hook_data_client_exit hdata; | |
1559 | if(IsClosing(source_p)) | |
1560 | return -1; | |
1561 | ||
1562 | /* note, this HAS to be here, when we exit a client we attempt to | |
1563 | * send them data, if this generates a write error we must *not* add | |
1564 | * them to the abort list --fl | |
1565 | */ | |
1566 | SetClosing(source_p); | |
1567 | ||
1568 | hdata.local_link = client_p; | |
1569 | hdata.target = source_p; | |
1570 | hdata.from = from; | |
1571 | hdata.comment = comment; | |
1572 | call_hook(h_client_exit, &hdata); | |
1573 | ||
1574 | if(MyConnect(source_p)) | |
1575 | { | |
1576 | /* Local clients of various types */ | |
1577 | if(IsPerson(source_p)) | |
1578 | return exit_local_client(client_p, source_p, from, comment); | |
1579 | else if(IsServer(source_p)) | |
1580 | return exit_local_server(client_p, source_p, from, comment); | |
1581 | /* IsUnknown || IsConnecting || IsHandShake */ | |
1582 | else if(!IsReject(source_p)) | |
1583 | return exit_unknown_client(client_p, source_p, from, comment); | |
55abcbb2 KB |
1584 | } |
1585 | else | |
212380e3 AC |
1586 | { |
1587 | /* Remotes */ | |
1588 | if(IsPerson(source_p)) | |
1589 | return exit_remote_client(client_p, source_p, from, comment); | |
1590 | else if(IsServer(source_p)) | |
1591 | return exit_remote_server(client_p, source_p, from, comment); | |
1592 | } | |
1593 | ||
1594 | return -1; | |
1595 | } | |
1596 | ||
1597 | /* | |
1598 | * Count up local client memory | |
1599 | */ | |
1600 | ||
1601 | /* XXX one common Client list now */ | |
1602 | void | |
1603 | count_local_client_memory(size_t * count, size_t * local_client_memory_used) | |
1604 | { | |
1087485c JT |
1605 | size_t lusage; |
1606 | rb_bh_usage(lclient_heap, count, NULL, &lusage, NULL); | |
adc6cc42 | 1607 | *local_client_memory_used = lusage + (*count * (sizeof(void *) + sizeof(struct Client))); |
212380e3 AC |
1608 | } |
1609 | ||
1610 | /* | |
1611 | * Count up remote client memory | |
1612 | */ | |
1613 | void | |
1614 | count_remote_client_memory(size_t * count, size_t * remote_client_memory_used) | |
1615 | { | |
1087485c JT |
1616 | size_t lcount, rcount; |
1617 | rb_bh_usage(lclient_heap, &lcount, NULL, NULL, NULL); | |
1618 | rb_bh_usage(client_heap, &rcount, NULL, NULL, NULL); | |
1619 | *count = rcount - lcount; | |
adc6cc42 | 1620 | *remote_client_memory_used = *count * (sizeof(void *) + sizeof(struct Client)); |
212380e3 AC |
1621 | } |
1622 | ||
1623 | ||
1624 | /* | |
1625 | * accept processing, this adds a form of "caller ID" to ircd | |
55abcbb2 | 1626 | * |
212380e3 | 1627 | * If a client puts themselves into "caller ID only" mode, |
55abcbb2 | 1628 | * only clients that match a client pointer they have put on |
212380e3 AC |
1629 | * the accept list will be allowed to message them. |
1630 | * | |
1631 | * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ] | |
1632 | * | |
1633 | * [target.allow_list] -> [ source1 ] -> [source2 ] | |
1634 | * | |
1635 | * i.e. a target will have a link list of source pointers it will allow | |
1636 | * each source client then has a back pointer pointing back | |
1637 | * to the client that has it on its accept list. | |
1638 | * This allows for exit_one_client to remove these now bogus entries | |
55abcbb2 | 1639 | * from any client having an accept on them. |
212380e3 AC |
1640 | */ |
1641 | /* | |
1642 | * del_all_accepts | |
1643 | * | |
1644 | * inputs - pointer to exiting client | |
1645 | * output - NONE | |
1646 | * side effects - Walk through given clients allow_list and on_allow_list | |
1647 | * remove all references to this client | |
1648 | */ | |
1649 | void | |
1650 | del_all_accepts(struct Client *client_p) | |
1651 | { | |
330fc5c1 | 1652 | rb_dlink_node *ptr; |
637c4932 | 1653 | rb_dlink_node *next_ptr; |
212380e3 AC |
1654 | struct Client *target_p; |
1655 | ||
1656 | if(MyClient(client_p) && client_p->localClient->allow_list.head) | |
1657 | { | |
1658 | /* clear this clients accept list, and remove them from | |
1659 | * everyones on_accept_list | |
1660 | */ | |
637c4932 | 1661 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->allow_list.head) |
212380e3 AC |
1662 | { |
1663 | target_p = ptr->data; | |
330fc5c1 AC |
1664 | rb_dlinkFindDestroy(client_p, &target_p->on_allow_list); |
1665 | rb_dlinkDestroy(ptr, &client_p->localClient->allow_list); | |
212380e3 AC |
1666 | } |
1667 | } | |
1668 | ||
1669 | /* remove this client from everyones accept list */ | |
637c4932 | 1670 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) |
212380e3 AC |
1671 | { |
1672 | target_p = ptr->data; | |
330fc5c1 AC |
1673 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); |
1674 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
212380e3 AC |
1675 | } |
1676 | } | |
1677 | ||
1678 | /* | |
521f9d63 | 1679 | * show_ip() - asks if the true IP should be shown when source is |
55abcbb2 | 1680 | * asking for info about target |
212380e3 AC |
1681 | * |
1682 | * Inputs - source_p who is asking | |
1683 | * - target_p who do we want the info on | |
521f9d63 | 1684 | * Output - returns 1 if clear IP can be shown, otherwise 0 |
212380e3 AC |
1685 | * Side Effects - none |
1686 | */ | |
1687 | ||
1688 | int | |
1689 | show_ip(struct Client *source_p, struct Client *target_p) | |
1690 | { | |
1691 | if(IsAnyServer(target_p)) | |
1692 | { | |
212380e3 AC |
1693 | return 0; |
1694 | } | |
1695 | else if(IsIPSpoof(target_p)) | |
1696 | { | |
1697 | /* source == NULL indicates message is being sent | |
1698 | * to local opers. | |
1699 | */ | |
1700 | if(!ConfigFileEntry.hide_spoof_ips && | |
1701 | (source_p == NULL || MyOper(source_p))) | |
1702 | return 1; | |
1703 | return 0; | |
1704 | } | |
1705 | else if(IsDynSpoof(target_p) && (source_p != NULL && !IsOper(source_p))) | |
1706 | return 0; | |
1707 | else | |
1708 | return 1; | |
1709 | } | |
1710 | ||
1711 | int | |
1712 | show_ip_conf(struct ConfItem *aconf, struct Client *source_p) | |
1713 | { | |
1714 | if(IsConfDoSpoofIp(aconf)) | |
1715 | { | |
1716 | if(!ConfigFileEntry.hide_spoof_ips && MyOper(source_p)) | |
1717 | return 1; | |
1718 | ||
1719 | return 0; | |
1720 | } | |
1721 | else | |
1722 | return 1; | |
1723 | } | |
1724 | ||
364e59f8 JT |
1725 | int |
1726 | show_ip_whowas(struct Whowas *whowas, struct Client *source_p) | |
1727 | { | |
1728 | if(whowas->flags & WHOWAS_IP_SPOOFING) | |
1729 | if(ConfigFileEntry.hide_spoof_ips || !MyOper(source_p)) | |
1730 | return 0; | |
1731 | if(whowas->flags & WHOWAS_DYNSPOOF) | |
1732 | if(!IsOper(source_p)) | |
1733 | return 0; | |
1734 | return 1; | |
1735 | } | |
1736 | ||
212380e3 AC |
1737 | /* |
1738 | * make_user | |
1739 | * | |
1740 | * inputs - pointer to client struct | |
1741 | * output - pointer to struct User | |
1742 | * side effects - add's an User information block to a client | |
1743 | * if it was not previously allocated. | |
1744 | */ | |
1745 | struct User * | |
1746 | make_user(struct Client *client_p) | |
1747 | { | |
1748 | struct User *user; | |
1749 | ||
1750 | user = client_p->user; | |
1751 | if(!user) | |
1752 | { | |
398b6a73 | 1753 | user = (struct User *) rb_bh_alloc(user_heap); |
212380e3 AC |
1754 | user->refcnt = 1; |
1755 | client_p->user = user; | |
1756 | } | |
1757 | return user; | |
1758 | } | |
1759 | ||
1760 | /* | |
1761 | * make_server | |
1762 | * | |
1763 | * inputs - pointer to client struct | |
1764 | * output - pointer to server_t | |
1765 | * side effects - add's an Server information block to a client | |
1766 | * if it was not previously allocated. | |
1767 | */ | |
8f103562 | 1768 | struct Server * |
212380e3 AC |
1769 | make_server(struct Client *client_p) |
1770 | { | |
8f103562 | 1771 | struct Server *serv = client_p->serv; |
212380e3 AC |
1772 | |
1773 | if(!serv) | |
1774 | { | |
8f103562 | 1775 | serv = (struct Server *) rb_malloc(sizeof(struct Server)); |
212380e3 AC |
1776 | client_p->serv = serv; |
1777 | } | |
1778 | return client_p->serv; | |
1779 | } | |
1780 | ||
1781 | /* | |
1782 | * free_user | |
55abcbb2 | 1783 | * |
212380e3 AC |
1784 | * inputs - pointer to user struct |
1785 | * - pointer to client struct | |
1786 | * output - none | |
1787 | * side effects - Decrease user reference count by one and release block, | |
1788 | * if count reaches 0 | |
1789 | */ | |
1790 | void | |
1791 | free_user(struct User *user, struct Client *client_p) | |
1792 | { | |
c127b45b SB |
1793 | free_away(client_p); |
1794 | ||
212380e3 AC |
1795 | if(--user->refcnt <= 0) |
1796 | { | |
c127b45b SB |
1797 | if(user->away) |
1798 | rb_free((char *) user->away); | |
212380e3 AC |
1799 | /* |
1800 | * sanity check | |
1801 | */ | |
1802 | if(user->refcnt < 0 || user->invited.head || user->channel.head) | |
1803 | { | |
1804 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1805 | "* %#lx user (%s!%s@%s) %#lx %#lx %#lx %lu %d *", | |
1806 | (unsigned long) client_p, | |
1807 | client_p ? client_p-> | |
1808 | name : "<noname>", | |
1809 | client_p->username, | |
1810 | client_p->host, | |
1811 | (unsigned long) user, | |
1812 | (unsigned long) user->invited.head, | |
55abcbb2 | 1813 | (unsigned long) user->channel.head, |
330fc5c1 | 1814 | rb_dlink_list_length(&user->channel), |
212380e3 AC |
1815 | user->refcnt); |
1816 | s_assert(!user->refcnt); | |
1817 | s_assert(!user->invited.head); | |
1818 | s_assert(!user->channel.head); | |
1819 | } | |
1820 | ||
398b6a73 | 1821 | rb_bh_free(user_heap, user); |
212380e3 AC |
1822 | } |
1823 | } | |
1824 | ||
e581ea8e | 1825 | void |
c127b45b | 1826 | allocate_away(struct Client *client_p) |
e581ea8e | 1827 | { |
c127b45b | 1828 | if(client_p->user->away == NULL) |
55abcbb2 | 1829 | client_p->user->away = rb_bh_alloc(away_heap); |
e581ea8e AC |
1830 | } |
1831 | ||
c127b45b | 1832 | |
e581ea8e | 1833 | void |
c127b45b | 1834 | free_away(struct Client *client_p) |
e581ea8e | 1835 | { |
c127b45b SB |
1836 | if(client_p->user != NULL && client_p->user->away != NULL) { |
1837 | rb_bh_free(away_heap, client_p->user->away); | |
1838 | client_p->user->away = NULL; | |
e581ea8e AC |
1839 | } |
1840 | } | |
1841 | ||
212380e3 AC |
1842 | void |
1843 | init_uid(void) | |
1844 | { | |
1845 | int i; | |
1846 | ||
1847 | for(i = 0; i < 3; i++) | |
1848 | current_uid[i] = me.id[i]; | |
1849 | ||
1850 | for(i = 3; i < 9; i++) | |
1851 | current_uid[i] = 'A'; | |
1852 | ||
1853 | current_uid[9] = '\0'; | |
1854 | } | |
1855 | ||
1856 | ||
1857 | char * | |
1858 | generate_uid(void) | |
1859 | { | |
428f9bc1 | 1860 | static int flipped = 0; |
212380e3 AC |
1861 | int i; |
1862 | ||
428f9bc1 | 1863 | uid_restart: |
212380e3 AC |
1864 | for(i = 8; i > 3; i--) |
1865 | { | |
1866 | if(current_uid[i] == 'Z') | |
1867 | { | |
1868 | current_uid[i] = '0'; | |
428f9bc1 | 1869 | goto out; |
212380e3 AC |
1870 | } |
1871 | else if(current_uid[i] != '9') | |
1872 | { | |
1873 | current_uid[i]++; | |
428f9bc1 | 1874 | goto out; |
212380e3 AC |
1875 | } |
1876 | else | |
1877 | current_uid[i] = 'A'; | |
1878 | } | |
1879 | ||
1880 | /* if this next if() triggers, we're fucked. */ | |
1881 | if(current_uid[3] == 'Z') | |
1882 | { | |
1883 | current_uid[i] = 'A'; | |
428f9bc1 | 1884 | flipped = 1; |
212380e3 AC |
1885 | } |
1886 | else | |
1887 | current_uid[i]++; | |
428f9bc1 AC |
1888 | out: |
1889 | /* if this happens..well, i'm not sure what to say, but lets handle it correctly */ | |
1890 | if(rb_unlikely(flipped)) | |
1891 | { | |
1892 | /* this slows down uid generation a bit... */ | |
1893 | if(find_id(current_uid) != NULL) | |
1894 | goto uid_restart; | |
1895 | } | |
212380e3 AC |
1896 | return current_uid; |
1897 | } | |
1898 | ||
1899 | /* | |
1900 | * close_connection | |
1901 | * Close the physical connection. This function must make | |
1902 | * MyConnect(client_p) == FALSE, and set client_p->from == NULL. | |
1903 | */ | |
1904 | void | |
1905 | close_connection(struct Client *client_p) | |
1906 | { | |
1907 | s_assert(client_p != NULL); | |
1908 | if(client_p == NULL) | |
1909 | return; | |
1910 | ||
1911 | s_assert(MyConnect(client_p)); | |
1912 | if(!MyConnect(client_p)) | |
1913 | return; | |
55abcbb2 | 1914 | |
212380e3 AC |
1915 | if(IsServer(client_p)) |
1916 | { | |
1917 | struct server_conf *server_p; | |
1918 | ||
8bd5767b JT |
1919 | ServerStats.is_sv++; |
1920 | ServerStats.is_sbs += client_p->localClient->sendB; | |
1921 | ServerStats.is_sbr += client_p->localClient->receiveB; | |
679ccbe5 | 1922 | ServerStats.is_sti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); |
212380e3 AC |
1923 | |
1924 | /* | |
1925 | * If the connection has been up for a long amount of time, schedule | |
1926 | * a 'quick' reconnect, else reset the next-connect cycle. | |
1927 | */ | |
1928 | if((server_p = find_server_conf(client_p->name)) != NULL) | |
1929 | { | |
1930 | /* | |
1931 | * Reschedule a faster reconnect, if this was a automatically | |
1932 | * connected configuration entry. (Note that if we have had | |
1933 | * a rehash in between, the status has been changed to | |
1934 | * CONF_ILLEGAL). But only do this if it was a "good" link. | |
1935 | */ | |
1936 | server_p->hold = time(NULL); | |
1937 | server_p->hold += | |
1938 | (server_p->hold - client_p->localClient->lasttime > | |
1939 | HANGONGOODLINK) ? HANGONRETRYDELAY : ConFreq(server_p->class); | |
1940 | } | |
1941 | ||
1942 | } | |
1943 | else if(IsClient(client_p)) | |
1944 | { | |
8bd5767b JT |
1945 | ServerStats.is_cl++; |
1946 | ServerStats.is_cbs += client_p->localClient->sendB; | |
1947 | ServerStats.is_cbr += client_p->localClient->receiveB; | |
679ccbe5 | 1948 | ServerStats.is_cti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); |
212380e3 AC |
1949 | } |
1950 | else | |
47adde3d | 1951 | ServerStats.is_ni++; |
54ac8b60 | 1952 | |
36f0ec74 AC |
1953 | del_from_cli_connid_hash(client_p); |
1954 | ||
c6d72037 | 1955 | if(client_p->localClient->F != NULL) |
54ac8b60 VY |
1956 | { |
1957 | /* attempt to flush any pending dbufs. Evil, but .. -- adrian */ | |
1958 | if(!IsIOError(client_p)) | |
1959 | send_queued(client_p); | |
1960 | ||
1961 | rb_close(client_p->localClient->F); | |
1962 | client_p->localClient->F = NULL; | |
1963 | } | |
1964 | ||
734d420e JT |
1965 | rb_linebuf_donebuf(&client_p->localClient->buf_sendq); |
1966 | rb_linebuf_donebuf(&client_p->localClient->buf_recvq); | |
212380e3 AC |
1967 | detach_conf(client_p); |
1968 | ||
1969 | /* XXX shouldnt really be done here. */ | |
1970 | detach_server_conf(client_p); | |
1971 | ||
1972 | client_p->from = NULL; /* ...this should catch them! >:) --msa */ | |
1973 | ClearMyConnect(client_p); | |
1974 | SetIOError(client_p); | |
1975 | } | |
1976 | ||
1977 | ||
1978 | ||
1979 | void | |
1980 | error_exit_client(struct Client *client_p, int error) | |
1981 | { | |
1982 | /* | |
1983 | * ...hmm, with non-blocking sockets we might get | |
1984 | * here from quite valid reasons, although.. why | |
1985 | * would select report "data available" when there | |
1986 | * wasn't... so, this must be an error anyway... --msa | |
1987 | * actually, EOF occurs when read() returns 0 and | |
1988 | * in due course, select() returns that fd as ready | |
1989 | * for reading even though it ends up being an EOF. -avalon | |
1990 | */ | |
1991 | char errmsg[255]; | |
734d420e | 1992 | int current_error = rb_get_sockerr(client_p->localClient->F); |
212380e3 AC |
1993 | |
1994 | SetIOError(client_p); | |
1995 | ||
1996 | if(IsServer(client_p) || IsHandshake(client_p)) | |
1997 | { | |
212380e3 AC |
1998 | if(error == 0) |
1999 | { | |
2000 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2001 | "Server %s closed the connection", | |
b3ebc7ab | 2002 | client_p->name); |
212380e3 AC |
2003 | |
2004 | ilog(L_SERVER, "Server %s closed the connection", | |
2005 | log_client_name(client_p, SHOW_IP)); | |
2006 | } | |
2007 | else | |
2008 | { | |
2009 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2010 | "Lost connection to %s: %s", | |
2011 | client_p->name, strerror(current_error)); | |
2012 | ilog(L_SERVER, "Lost connection to %s: %s", | |
2013 | log_client_name(client_p, SHOW_IP), strerror(current_error)); | |
2014 | } | |
212380e3 AC |
2015 | } |
2016 | ||
2017 | if(error == 0) | |
f427c8b0 | 2018 | rb_strlcpy(errmsg, "Remote host closed the connection", sizeof(errmsg)); |
212380e3 | 2019 | else |
5203cba5 | 2020 | snprintf(errmsg, sizeof(errmsg), "Read error: %s", strerror(current_error)); |
212380e3 AC |
2021 | |
2022 | exit_client(client_p, client_p, &me, errmsg); | |
2023 | } |