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1 | /* | |
2 | * charybdis: an advanced ircd. | |
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 | |
8 | * Copyright (C) 2007 William Pitcock | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
23 | * USA | |
24 | * | |
25 | * $Id: client.c 3514 2007-06-06 16:25:21Z nenolod $ | |
26 | */ | |
27 | #include "stdinc.h" | |
28 | #include "config.h" | |
29 | ||
30 | #include "client.h" | |
31 | #include "class.h" | |
32 | #include "common.h" | |
33 | #include "hash.h" | |
34 | #include "match.h" | |
35 | #include "ircd.h" | |
36 | #include "numeric.h" | |
37 | #include "packet.h" | |
38 | #include "s_auth.h" | |
39 | #include "s_conf.h" | |
40 | #include "s_newconf.h" | |
41 | #include "logger.h" | |
42 | #include "s_serv.h" | |
43 | #include "s_stats.h" | |
44 | #include "send.h" | |
45 | #include "whowas.h" | |
46 | #include "s_user.h" | |
47 | #include "hash.h" | |
48 | #include "hostmask.h" | |
49 | #include "listener.h" | |
50 | #include "hook.h" | |
51 | #include "msg.h" | |
52 | #include "monitor.h" | |
53 | #include "blacklist.h" | |
54 | #include "reject.h" | |
55 | #include "scache.h" | |
56 | #include "irc_dictionary.h" | |
57 | #include "sslproc.h" | |
58 | ||
59 | #define DEBUG_EXITED_CLIENTS | |
60 | ||
61 | static void check_pings_list(rb_dlink_list * list); | |
62 | static void check_unknowns_list(rb_dlink_list * list); | |
63 | static void free_exited_clients(void *unused); | |
64 | static void exit_aborted_clients(void *unused); | |
65 | ||
66 | static int exit_remote_client(struct Client *, struct Client *, struct Client *,const char *); | |
67 | static int exit_remote_server(struct Client *, struct Client *, struct Client *,const char *); | |
68 | static int exit_local_client(struct Client *, struct Client *, struct Client *,const char *); | |
69 | static int exit_unknown_client(struct Client *, struct Client *, struct Client *,const char *); | |
70 | static int exit_local_server(struct Client *, struct Client *, struct Client *,const char *); | |
71 | static int qs_server(struct Client *, struct Client *, struct Client *, const char *comment); | |
72 | ||
73 | static EVH check_pings; | |
74 | ||
75 | static rb_bh *client_heap = NULL; | |
76 | static rb_bh *lclient_heap = NULL; | |
77 | static rb_bh *pclient_heap = NULL; | |
78 | static rb_bh *user_heap = NULL; | |
79 | static rb_bh *away_heap = NULL; | |
80 | static char current_uid[IDLEN]; | |
81 | ||
82 | struct Dictionary *nd_dict = NULL; | |
83 | ||
84 | enum | |
85 | { | |
86 | D_LINED, | |
87 | K_LINED | |
88 | }; | |
89 | ||
90 | rb_dlink_list dead_list; | |
91 | #ifdef DEBUG_EXITED_CLIENTS | |
92 | static rb_dlink_list dead_remote_list; | |
93 | #endif | |
94 | ||
95 | struct abort_client | |
96 | { | |
97 | rb_dlink_node node; | |
98 | struct Client *client; | |
99 | char notice[REASONLEN]; | |
100 | }; | |
101 | ||
102 | static rb_dlink_list abort_list; | |
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 | */ | |
119 | client_heap = rb_bh_create(sizeof(struct Client), CLIENT_HEAP_SIZE, "client_heap"); | |
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"); | |
122 | user_heap = rb_bh_create(sizeof(struct User), USER_HEAP_SIZE, "user_heap"); | |
123 | away_heap = rb_bh_create(AWAYLEN, AWAY_HEAP_SIZE, "away_heap"); | |
124 | ||
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); | |
128 | rb_event_add("flood_recalc", flood_recalc, NULL, 1); | |
129 | ||
130 | nd_dict = irc_dictionary_create(irccmp); | |
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 | ||
150 | client_p = rb_bh_alloc(client_heap); | |
151 | ||
152 | if(from == NULL) | |
153 | { | |
154 | client_p->from = client_p; /* 'from' of local client is self! */ | |
155 | ||
156 | localClient = rb_bh_alloc(lclient_heap); | |
157 | SetMyConnect(client_p); | |
158 | client_p->localClient = localClient; | |
159 | ||
160 | client_p->localClient->lasttime = client_p->localClient->firsttime = rb_current_time(); | |
161 | ||
162 | client_p->localClient->F = NULL; | |
163 | ||
164 | client_p->preClient = rb_bh_alloc(pclient_heap);; | |
165 | ||
166 | /* as good a place as any... */ | |
167 | rb_dlinkAdd(client_p, &client_p->localClient->tnode, &unknown_list); | |
168 | } | |
169 | else | |
170 | { /* from is not NULL */ | |
171 | client_p->localClient = NULL; | |
172 | client_p->preClient = NULL; | |
173 | client_p->from = from; /* 'from' of local client is self! */ | |
174 | } | |
175 | ||
176 | SetUnknown(client_p); | |
177 | strcpy(client_p->username, "unknown"); | |
178 | ||
179 | return client_p; | |
180 | } | |
181 | ||
182 | void | |
183 | free_pre_client(struct Client *client_p) | |
184 | { | |
185 | struct Blacklist *blptr; | |
186 | ||
187 | s_assert(NULL != client_p); | |
188 | ||
189 | if(client_p->preClient == NULL) | |
190 | return; | |
191 | ||
192 | blptr = client_p->preClient->dnsbl_listed; | |
193 | if (blptr != NULL) | |
194 | unref_blacklist(blptr); | |
195 | abort_blacklist_queries(client_p); | |
196 | rb_bh_free(pclient_heap, client_p->preClient); | |
197 | client_p->preClient = NULL; | |
198 | } | |
199 | ||
200 | static void | |
201 | free_local_client(struct Client *client_p) | |
202 | { | |
203 | s_assert(NULL != client_p); | |
204 | s_assert(&me != client_p); | |
205 | ||
206 | if(client_p->localClient == NULL) | |
207 | return; | |
208 | ||
209 | /* | |
210 | * clean up extra sockets from P-lines which have been discarded. | |
211 | */ | |
212 | if(client_p->localClient->listener) | |
213 | { | |
214 | s_assert(0 < client_p->localClient->listener->ref_count); | |
215 | if(0 == --client_p->localClient->listener->ref_count | |
216 | && !client_p->localClient->listener->active) | |
217 | free_listener(client_p->localClient->listener); | |
218 | client_p->localClient->listener = 0; | |
219 | } | |
220 | ||
221 | if(client_p->localClient->F != NULL) | |
222 | { | |
223 | del_from_cli_fd_hash(client_p); | |
224 | rb_close(client_p->localClient->F); | |
225 | } | |
226 | ||
227 | if(client_p->localClient->passwd) | |
228 | { | |
229 | memset(client_p->localClient->passwd, 0, | |
230 | strlen(client_p->localClient->passwd)); | |
231 | rb_free(client_p->localClient->passwd); | |
232 | } | |
233 | ||
234 | rb_free(client_p->localClient->challenge); | |
235 | rb_free(client_p->localClient->fullcaps); | |
236 | rb_free(client_p->localClient->opername); | |
237 | rb_free(client_p->localClient->mangledhost); | |
238 | if (client_p->localClient->privset) | |
239 | privilegeset_unref(client_p->localClient->privset); | |
240 | ||
241 | ssld_decrement_clicount(client_p->localClient->ssl_ctl); | |
242 | ||
243 | rb_bh_free(lclient_heap, client_p->localClient); | |
244 | client_p->localClient = NULL; | |
245 | } | |
246 | ||
247 | void | |
248 | free_client(struct Client *client_p) | |
249 | { | |
250 | s_assert(NULL != client_p); | |
251 | s_assert(&me != client_p); | |
252 | free_local_client(client_p); | |
253 | free_pre_client(client_p); | |
254 | rb_bh_free(client_heap, client_p); | |
255 | } | |
256 | ||
257 | /* | |
258 | * check_pings - go through the local client list and check activity | |
259 | * kill off stuff that should die | |
260 | * | |
261 | * inputs - NOT USED (from event) | |
262 | * output - next time_t when check_pings() should be called again | |
263 | * side effects - | |
264 | * | |
265 | * | |
266 | * A PING can be sent to clients as necessary. | |
267 | * | |
268 | * Client/Server ping outs are handled. | |
269 | */ | |
270 | ||
271 | /* | |
272 | * Addon from adrian. We used to call this after nextping seconds, | |
273 | * however I've changed it to run once a second. This is only for | |
274 | * PING timeouts, not K/etc-line checks (thanks dianora!). Having it | |
275 | * run once a second makes life a lot easier - when a new client connects | |
276 | * and they need a ping in 4 seconds, if nextping was set to 20 seconds | |
277 | * we end up waiting 20 seconds. This is stupid. :-) | |
278 | * I will optimise (hah!) check_pings() once I've finished working on | |
279 | * tidying up other network IO evilnesses. | |
280 | * -- adrian | |
281 | */ | |
282 | ||
283 | static void | |
284 | check_pings(void *notused) | |
285 | { | |
286 | check_pings_list(&lclient_list); | |
287 | check_pings_list(&serv_list); | |
288 | check_unknowns_list(&unknown_list); | |
289 | } | |
290 | ||
291 | /* | |
292 | * Check_pings_list() | |
293 | * | |
294 | * inputs - pointer to list to check | |
295 | * output - NONE | |
296 | * side effects - | |
297 | */ | |
298 | static void | |
299 | check_pings_list(rb_dlink_list * list) | |
300 | { | |
301 | char scratch[32]; /* way too generous but... */ | |
302 | struct Client *client_p; /* current local client_p being examined */ | |
303 | int ping = 0; /* ping time value from client */ | |
304 | rb_dlink_node *ptr, *next_ptr; | |
305 | ||
306 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) | |
307 | { | |
308 | client_p = ptr->data; | |
309 | ||
310 | if(!MyConnect(client_p) || IsDead(client_p)) | |
311 | continue; | |
312 | ||
313 | ping = get_client_ping(client_p); | |
314 | ||
315 | if(ping < (rb_current_time() - client_p->localClient->lasttime)) | |
316 | { | |
317 | /* | |
318 | * If the client/server hasnt talked to us in 2*ping seconds | |
319 | * and it has a ping time, then close its connection. | |
320 | */ | |
321 | if(((rb_current_time() - client_p->localClient->lasttime) >= (2 * ping) | |
322 | && (client_p->flags & FLAGS_PINGSENT))) | |
323 | { | |
324 | if(IsServer(client_p)) | |
325 | { | |
326 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
327 | "No response from %s, closing link", | |
328 | client_p->name); | |
329 | ilog(L_SERVER, | |
330 | "No response from %s, closing link", | |
331 | log_client_name(client_p, HIDE_IP)); | |
332 | } | |
333 | (void) rb_snprintf(scratch, sizeof(scratch), | |
334 | "Ping timeout: %d seconds", | |
335 | (int) (rb_current_time() - client_p->localClient->lasttime)); | |
336 | ||
337 | exit_client(client_p, client_p, &me, scratch); | |
338 | continue; | |
339 | } | |
340 | else if((client_p->flags & FLAGS_PINGSENT) == 0) | |
341 | { | |
342 | /* | |
343 | * if we havent PINGed the connection and we havent | |
344 | * heard from it in a while, PING it to make sure | |
345 | * it is still alive. | |
346 | */ | |
347 | client_p->flags |= FLAGS_PINGSENT; | |
348 | /* not nice but does the job */ | |
349 | client_p->localClient->lasttime = rb_current_time() - ping; | |
350 | sendto_one(client_p, "PING :%s", me.name); | |
351 | } | |
352 | } | |
353 | /* ping_timeout: */ | |
354 | ||
355 | } | |
356 | } | |
357 | ||
358 | /* | |
359 | * check_unknowns_list | |
360 | * | |
361 | * inputs - pointer to list of unknown clients | |
362 | * output - NONE | |
363 | * side effects - unknown clients get marked for termination after n seconds | |
364 | */ | |
365 | static void | |
366 | check_unknowns_list(rb_dlink_list * list) | |
367 | { | |
368 | rb_dlink_node *ptr, *next_ptr; | |
369 | struct Client *client_p; | |
370 | int timeout; | |
371 | ||
372 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) | |
373 | { | |
374 | client_p = ptr->data; | |
375 | ||
376 | if(IsDead(client_p) || IsClosing(client_p)) | |
377 | continue; | |
378 | ||
379 | /* still has DNSbls to validate against */ | |
380 | if(client_p->preClient != NULL && | |
381 | rb_dlink_list_length(&client_p->preClient->dnsbl_queries) > 0) | |
382 | continue; | |
383 | ||
384 | /* | |
385 | * Check UNKNOWN connections - if they have been in this state | |
386 | * for > 30s, close them. | |
387 | */ | |
388 | ||
389 | timeout = IsAnyServer(client_p) ? ConfigFileEntry.connect_timeout : 30; | |
390 | if((rb_current_time() - client_p->localClient->firsttime) > timeout) | |
391 | { | |
392 | if(IsAnyServer(client_p)) | |
393 | { | |
394 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
395 | "No response from %s, closing link", | |
396 | client_p->name); | |
397 | ilog(L_SERVER, | |
398 | "No response from %s, closing link", | |
399 | log_client_name(client_p, HIDE_IP)); | |
400 | } | |
401 | exit_client(client_p, client_p, &me, "Connection timed out"); | |
402 | } | |
403 | } | |
404 | } | |
405 | ||
406 | static void | |
407 | notify_banned_client(struct Client *client_p, struct ConfItem *aconf, int ban) | |
408 | { | |
409 | static const char conn_closed[] = "Connection closed"; | |
410 | static const char d_lined[] = "D-lined"; | |
411 | static const char k_lined[] = "K-lined"; | |
412 | const char *reason = NULL; | |
413 | const char *exit_reason = conn_closed; | |
414 | ||
415 | if(ConfigFileEntry.kline_with_reason && !EmptyString(aconf->passwd)) | |
416 | { | |
417 | reason = aconf->passwd; | |
418 | exit_reason = aconf->passwd; | |
419 | } | |
420 | else | |
421 | { | |
422 | reason = aconf->status == D_LINED ? d_lined : k_lined; | |
423 | } | |
424 | ||
425 | if(ban == D_LINED && !IsPerson(client_p)) | |
426 | sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined"); | |
427 | else | |
428 | sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP), | |
429 | me.name, client_p->name, reason); | |
430 | ||
431 | exit_client(client_p, client_p, &me, | |
432 | EmptyString(ConfigFileEntry.kline_reason) ? exit_reason : | |
433 | ConfigFileEntry.kline_reason); | |
434 | } | |
435 | ||
436 | /* | |
437 | * check_banned_lines | |
438 | * inputs - NONE | |
439 | * output - NONE | |
440 | * side effects - Check all connections for a pending k/dline against the | |
441 | * client, exit the client if found. | |
442 | */ | |
443 | void | |
444 | check_banned_lines(void) | |
445 | { | |
446 | struct Client *client_p; /* current local client_p being examined */ | |
447 | struct ConfItem *aconf = NULL; | |
448 | rb_dlink_node *ptr, *next_ptr; | |
449 | ||
450 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
451 | { | |
452 | client_p = ptr->data; | |
453 | ||
454 | if(IsMe(client_p)) | |
455 | continue; | |
456 | ||
457 | /* if there is a returned struct ConfItem then kill it */ | |
458 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, client_p->localClient->ip.ss_family))) | |
459 | { | |
460 | if(aconf->status & CONF_EXEMPTDLINE) | |
461 | continue; | |
462 | ||
463 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
464 | "DLINE active for %s", | |
465 | get_client_name(client_p, HIDE_IP)); | |
466 | ||
467 | notify_banned_client(client_p, aconf, D_LINED); | |
468 | continue; /* and go examine next fd/client_p */ | |
469 | } | |
470 | ||
471 | if(!IsPerson(client_p)) | |
472 | continue; | |
473 | ||
474 | if((aconf = find_kline(client_p)) != NULL) | |
475 | { | |
476 | if(IsExemptKline(client_p)) | |
477 | { | |
478 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
479 | "KLINE over-ruled for %s, client is kline_exempt [%s@%s]", | |
480 | get_client_name(client_p, HIDE_IP), | |
481 | aconf->user, aconf->host); | |
482 | continue; | |
483 | } | |
484 | ||
485 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
486 | "KLINE active for %s", | |
487 | get_client_name(client_p, HIDE_IP)); | |
488 | notify_banned_client(client_p, aconf, K_LINED); | |
489 | continue; | |
490 | } | |
491 | else if((aconf = find_xline(client_p->info, 1)) != NULL) | |
492 | { | |
493 | if(IsExemptKline(client_p)) | |
494 | { | |
495 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
496 | "XLINE over-ruled for %s, client is kline_exempt [%s]", | |
497 | get_client_name(client_p, HIDE_IP), | |
498 | aconf->name); | |
499 | continue; | |
500 | } | |
501 | ||
502 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
503 | get_client_name(client_p, HIDE_IP)); | |
504 | ||
505 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
506 | continue; | |
507 | } | |
508 | } | |
509 | ||
510 | /* also check the unknowns list for new dlines */ | |
511 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) | |
512 | { | |
513 | client_p = ptr->data; | |
514 | ||
515 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family))) | |
516 | { | |
517 | if(aconf->status & CONF_EXEMPTDLINE) | |
518 | continue; | |
519 | ||
520 | notify_banned_client(client_p, aconf, D_LINED); | |
521 | } | |
522 | } | |
523 | ||
524 | } | |
525 | ||
526 | /* check_klines_event() | |
527 | * | |
528 | * inputs - | |
529 | * outputs - | |
530 | * side effects - check_klines() is called, kline_queued unset | |
531 | */ | |
532 | void | |
533 | check_klines_event(void *unused) | |
534 | { | |
535 | kline_queued = 0; | |
536 | check_klines(); | |
537 | } | |
538 | ||
539 | /* check_klines | |
540 | * | |
541 | * inputs - | |
542 | * outputs - | |
543 | * side effects - all clients will be checked for klines | |
544 | */ | |
545 | void | |
546 | check_klines(void) | |
547 | { | |
548 | struct Client *client_p; | |
549 | struct ConfItem *aconf; | |
550 | rb_dlink_node *ptr; | |
551 | rb_dlink_node *next_ptr; | |
552 | ||
553 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
554 | { | |
555 | client_p = ptr->data; | |
556 | ||
557 | if(IsMe(client_p) || !IsPerson(client_p)) | |
558 | continue; | |
559 | ||
560 | if((aconf = find_kline(client_p)) != NULL) | |
561 | { | |
562 | if(IsExemptKline(client_p)) | |
563 | { | |
564 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
565 | "KLINE over-ruled for %s, client is kline_exempt", | |
566 | get_client_name(client_p, HIDE_IP)); | |
567 | continue; | |
568 | } | |
569 | ||
570 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
571 | "KLINE active for %s", | |
572 | get_client_name(client_p, HIDE_IP)); | |
573 | ||
574 | notify_banned_client(client_p, aconf, K_LINED); | |
575 | continue; | |
576 | } | |
577 | } | |
578 | } | |
579 | ||
580 | /* check_dlines() | |
581 | * | |
582 | * inputs - | |
583 | * outputs - | |
584 | * side effects - all clients will be checked for dlines | |
585 | */ | |
586 | void | |
587 | check_dlines(void) | |
588 | { | |
589 | struct Client *client_p; | |
590 | struct ConfItem *aconf; | |
591 | rb_dlink_node *ptr; | |
592 | rb_dlink_node *next_ptr; | |
593 | ||
594 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
595 | { | |
596 | client_p = ptr->data; | |
597 | ||
598 | if(IsMe(client_p)) | |
599 | continue; | |
600 | ||
601 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) | |
602 | { | |
603 | if(aconf->status & CONF_EXEMPTDLINE) | |
604 | continue; | |
605 | ||
606 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
607 | "DLINE active for %s", | |
608 | get_client_name(client_p, HIDE_IP)); | |
609 | ||
610 | notify_banned_client(client_p, aconf, D_LINED); | |
611 | continue; | |
612 | } | |
613 | } | |
614 | ||
615 | /* dlines need to be checked against unknowns too */ | |
616 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) | |
617 | { | |
618 | client_p = ptr->data; | |
619 | ||
620 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) | |
621 | { | |
622 | if(aconf->status & CONF_EXEMPTDLINE) | |
623 | continue; | |
624 | ||
625 | notify_banned_client(client_p, aconf, D_LINED); | |
626 | } | |
627 | } | |
628 | } | |
629 | ||
630 | /* check_xlines | |
631 | * | |
632 | * inputs - | |
633 | * outputs - | |
634 | * side effects - all clients will be checked for xlines | |
635 | */ | |
636 | void | |
637 | check_xlines(void) | |
638 | { | |
639 | struct Client *client_p; | |
640 | struct ConfItem *aconf; | |
641 | rb_dlink_node *ptr; | |
642 | rb_dlink_node *next_ptr; | |
643 | ||
644 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
645 | { | |
646 | client_p = ptr->data; | |
647 | ||
648 | if(IsMe(client_p) || !IsPerson(client_p)) | |
649 | continue; | |
650 | ||
651 | if((aconf = find_xline(client_p->info, 1)) != NULL) | |
652 | { | |
653 | if(IsExemptKline(client_p)) | |
654 | { | |
655 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
656 | "XLINE over-ruled for %s, client is kline_exempt", | |
657 | get_client_name(client_p, HIDE_IP)); | |
658 | continue; | |
659 | } | |
660 | ||
661 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
662 | get_client_name(client_p, HIDE_IP)); | |
663 | ||
664 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
665 | continue; | |
666 | } | |
667 | } | |
668 | } | |
669 | ||
670 | /* | |
671 | * update_client_exit_stats | |
672 | * | |
673 | * input - pointer to client | |
674 | * output - NONE | |
675 | * side effects - | |
676 | */ | |
677 | static void | |
678 | update_client_exit_stats(struct Client *client_p) | |
679 | { | |
680 | if(IsServer(client_p)) | |
681 | { | |
682 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
683 | "Server %s split from %s", | |
684 | client_p->name, client_p->servptr->name); | |
685 | if(HasSentEob(client_p)) | |
686 | eob_count--; | |
687 | } | |
688 | else if(IsClient(client_p)) | |
689 | { | |
690 | --Count.total; | |
691 | if(IsOper(client_p)) | |
692 | --Count.oper; | |
693 | if(IsInvisible(client_p)) | |
694 | --Count.invisi; | |
695 | } | |
696 | ||
697 | if(splitchecking && !splitmode) | |
698 | check_splitmode(NULL); | |
699 | } | |
700 | ||
701 | /* | |
702 | * release_client_state | |
703 | * | |
704 | * input - pointer to client to release | |
705 | * output - NONE | |
706 | * side effects - | |
707 | */ | |
708 | static void | |
709 | release_client_state(struct Client *client_p) | |
710 | { | |
711 | if(client_p->user != NULL) | |
712 | { | |
713 | free_user(client_p->user, client_p); /* try this here */ | |
714 | } | |
715 | if(client_p->serv) | |
716 | { | |
717 | if(client_p->serv->user != NULL) | |
718 | free_user(client_p->serv->user, client_p); | |
719 | if(client_p->serv->fullcaps) | |
720 | rb_free(client_p->serv->fullcaps); | |
721 | rb_free(client_p->serv); | |
722 | } | |
723 | } | |
724 | ||
725 | /* | |
726 | * remove_client_from_list | |
727 | * inputs - point to client to remove | |
728 | * output - NONE | |
729 | * side effects - taken the code from ExitOneClient() for this | |
730 | * and placed it here. - avalon | |
731 | */ | |
732 | static void | |
733 | remove_client_from_list(struct Client *client_p) | |
734 | { | |
735 | s_assert(NULL != client_p); | |
736 | ||
737 | if(client_p == NULL) | |
738 | return; | |
739 | ||
740 | /* A client made with make_client() | |
741 | * is on the unknown_list until removed. | |
742 | * If it =does= happen to exit before its removed from that list | |
743 | * and its =not= on the global_client_list, it will core here. | |
744 | * short circuit that case now -db | |
745 | */ | |
746 | if(client_p->node.prev == NULL && client_p->node.next == NULL) | |
747 | return; | |
748 | ||
749 | rb_dlinkDelete(&client_p->node, &global_client_list); | |
750 | ||
751 | update_client_exit_stats(client_p); | |
752 | } | |
753 | ||
754 | ||
755 | /* | |
756 | * find_person - find person by (nick)name. | |
757 | * inputs - pointer to name | |
758 | * output - return client pointer | |
759 | * side effects - | |
760 | */ | |
761 | struct Client * | |
762 | find_person(const char *name) | |
763 | { | |
764 | struct Client *c2ptr; | |
765 | ||
766 | c2ptr = find_client(name); | |
767 | ||
768 | if(c2ptr && IsPerson(c2ptr)) | |
769 | return (c2ptr); | |
770 | return (NULL); | |
771 | } | |
772 | ||
773 | struct Client * | |
774 | find_named_person(const char *name) | |
775 | { | |
776 | struct Client *c2ptr; | |
777 | ||
778 | c2ptr = find_named_client(name); | |
779 | ||
780 | if(c2ptr && IsPerson(c2ptr)) | |
781 | return (c2ptr); | |
782 | return (NULL); | |
783 | } | |
784 | ||
785 | ||
786 | /* | |
787 | * find_chasing - find the client structure for a nick name (user) | |
788 | * using history mechanism if necessary. If the client is not found, | |
789 | * an error message (NO SUCH NICK) is generated. If the client was found | |
790 | * through the history, chasing will be 1 and otherwise 0. | |
791 | */ | |
792 | struct Client * | |
793 | find_chasing(struct Client *source_p, const char *user, int *chasing) | |
794 | { | |
795 | struct Client *who; | |
796 | ||
797 | if(MyClient(source_p)) | |
798 | who = find_named_person(user); | |
799 | else | |
800 | who = find_person(user); | |
801 | ||
802 | if(chasing) | |
803 | *chasing = 0; | |
804 | ||
805 | if(who || IsDigit(*user)) | |
806 | return who; | |
807 | ||
808 | if(!(who = get_history(user, (long) KILLCHASETIMELIMIT))) | |
809 | { | |
810 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
811 | form_str(ERR_NOSUCHNICK), user); | |
812 | return (NULL); | |
813 | } | |
814 | if(chasing) | |
815 | *chasing = 1; | |
816 | return who; | |
817 | } | |
818 | ||
819 | /* | |
820 | * get_client_name - Return the name of the client | |
821 | * for various tracking and | |
822 | * admin purposes. The main purpose of this function is to | |
823 | * return the "socket host" name of the client, if that | |
824 | * differs from the advertised name (other than case). | |
825 | * But, this can be used to any client structure. | |
826 | * | |
827 | * NOTE 1: | |
828 | * Watch out the allocation of "nbuf", if either source_p->name | |
829 | * or source_p->sockhost gets changed into pointers instead of | |
830 | * directly allocated within the structure... | |
831 | * | |
832 | * NOTE 2: | |
833 | * Function return either a pointer to the structure (source_p) or | |
834 | * to internal buffer (nbuf). *NEVER* use the returned pointer | |
835 | * to modify what it points!!! | |
836 | */ | |
837 | ||
838 | const char * | |
839 | get_client_name(struct Client *client, int showip) | |
840 | { | |
841 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
842 | ||
843 | s_assert(NULL != client); | |
844 | if(client == NULL) | |
845 | return NULL; | |
846 | ||
847 | if(MyConnect(client)) | |
848 | { | |
849 | if(!irccmp(client->name, client->host)) | |
850 | return client->name; | |
851 | ||
852 | if(ConfigFileEntry.hide_spoof_ips && | |
853 | showip == SHOW_IP && IsIPSpoof(client)) | |
854 | showip = MASK_IP; | |
855 | if(IsAnyServer(client)) | |
856 | showip = MASK_IP; | |
857 | ||
858 | /* And finally, let's get the host information, ip or name */ | |
859 | switch (showip) | |
860 | { | |
861 | case SHOW_IP: | |
862 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
863 | client->name, client->username, | |
864 | client->sockhost); | |
865 | break; | |
866 | case MASK_IP: | |
867 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
868 | client->name, client->username); | |
869 | break; | |
870 | default: | |
871 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
872 | client->name, client->username, client->host); | |
873 | } | |
874 | return nbuf; | |
875 | } | |
876 | ||
877 | /* As pointed out by Adel Mezibra | |
878 | * Neph|l|m@EFnet. Was missing a return here. | |
879 | */ | |
880 | return client->name; | |
881 | } | |
882 | ||
883 | /* log_client_name() | |
884 | * | |
885 | * This version is the same as get_client_name, but doesnt contain the | |
886 | * code that will hide IPs always. This should be used for logfiles. | |
887 | */ | |
888 | const char * | |
889 | log_client_name(struct Client *target_p, int showip) | |
890 | { | |
891 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
892 | ||
893 | if(target_p == NULL) | |
894 | return NULL; | |
895 | ||
896 | if(MyConnect(target_p)) | |
897 | { | |
898 | if(irccmp(target_p->name, target_p->host) == 0) | |
899 | return target_p->name; | |
900 | ||
901 | switch (showip) | |
902 | { | |
903 | case SHOW_IP: | |
904 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, | |
905 | target_p->username, target_p->sockhost); | |
906 | break; | |
907 | ||
908 | case MASK_IP: | |
909 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
910 | target_p->name, target_p->username); | |
911 | ||
912 | default: | |
913 | rb_snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, | |
914 | target_p->username, target_p->host); | |
915 | } | |
916 | ||
917 | return nbuf; | |
918 | } | |
919 | ||
920 | return target_p->name; | |
921 | } | |
922 | ||
923 | /* is_remote_connect - Returns whether a server was /connect'ed by a remote | |
924 | * oper (send notices netwide) */ | |
925 | int | |
926 | is_remote_connect(struct Client *client_p) | |
927 | { | |
928 | struct Client *oper; | |
929 | ||
930 | if (client_p->serv == NULL) | |
931 | return FALSE; | |
932 | oper = find_named_person(client_p->serv->by); | |
933 | return oper != NULL && IsOper(oper) && !MyConnect(oper); | |
934 | } | |
935 | ||
936 | static void | |
937 | free_exited_clients(void *unused) | |
938 | { | |
939 | rb_dlink_node *ptr, *next; | |
940 | struct Client *target_p; | |
941 | ||
942 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_list.head) | |
943 | { | |
944 | target_p = ptr->data; | |
945 | ||
946 | #ifdef DEBUG_EXITED_CLIENTS | |
947 | { | |
948 | struct abort_client *abt; | |
949 | rb_dlink_node *aptr; | |
950 | int found = 0; | |
951 | ||
952 | RB_DLINK_FOREACH(aptr, abort_list.head) | |
953 | { | |
954 | abt = aptr->data; | |
955 | if(abt->client == target_p) | |
956 | { | |
957 | s_assert(0); | |
958 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
959 | "On abort_list: %s stat: %u flags: %u/%u handler: %c", | |
960 | target_p->name, (unsigned int) target_p->status, | |
961 | target_p->flags, target_p->flags2, target_p->handler); | |
962 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
963 | "Please report this to the charybdis developers!"); | |
964 | found++; | |
965 | } | |
966 | } | |
967 | ||
968 | if(found) | |
969 | { | |
970 | rb_dlinkDestroy(ptr, &dead_list); | |
971 | continue; | |
972 | } | |
973 | } | |
974 | #endif | |
975 | ||
976 | if(ptr->data == NULL) | |
977 | { | |
978 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
979 | "Warning: null client on dead_list!"); | |
980 | rb_dlinkDestroy(ptr, &dead_list); | |
981 | continue; | |
982 | } | |
983 | release_client_state(target_p); | |
984 | free_client(target_p); | |
985 | rb_dlinkDestroy(ptr, &dead_list); | |
986 | } | |
987 | ||
988 | #ifdef DEBUG_EXITED_CLIENTS | |
989 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_remote_list.head) | |
990 | { | |
991 | target_p = ptr->data; | |
992 | ||
993 | if(ptr->data == NULL) | |
994 | { | |
995 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
996 | "Warning: null client on dead_list!"); | |
997 | rb_dlinkDestroy(ptr, &dead_list); | |
998 | continue; | |
999 | } | |
1000 | release_client_state(target_p); | |
1001 | free_client(target_p); | |
1002 | rb_dlinkDestroy(ptr, &dead_remote_list); | |
1003 | } | |
1004 | #endif | |
1005 | ||
1006 | } | |
1007 | ||
1008 | /* | |
1009 | ** Recursively send QUITs and SQUITs for source_p and all its dependent clients | |
1010 | ** and servers to those servers that need them. A server needs the client | |
1011 | ** QUITs if it can't figure them out from the SQUIT (ie pre-TS4) or if it | |
1012 | ** isn't getting the SQUIT because of @#(*&@)# hostmasking. With TS4, once | |
1013 | ** a link gets a SQUIT, it doesn't need any QUIT/SQUITs for clients depending | |
1014 | ** on that one -orabidoo | |
1015 | */ | |
1016 | static void | |
1017 | recurse_send_quits(struct Client *client_p, struct Client *source_p, | |
1018 | struct Client *to, const char *comment1, | |
1019 | const char *comment) | |
1020 | { | |
1021 | struct Client *target_p; | |
1022 | rb_dlink_node *ptr, *ptr_next; | |
1023 | /* If this server can handle quit storm (QS) removal | |
1024 | * of dependents, just send the SQUIT | |
1025 | */ | |
1026 | ||
1027 | if(IsCapable(to, CAP_QS)) | |
1028 | { | |
1029 | sendto_one(to, "SQUIT %s :%s", | |
1030 | get_id(source_p, to), comment); | |
1031 | } | |
1032 | else | |
1033 | { | |
1034 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1035 | { | |
1036 | target_p = ptr->data; | |
1037 | sendto_one(to, ":%s QUIT :%s", target_p->name, comment1); | |
1038 | } | |
1039 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) | |
1040 | { | |
1041 | target_p = ptr->data; | |
1042 | recurse_send_quits(client_p, target_p, to, comment1, comment); | |
1043 | } | |
1044 | sendto_one(to, "SQUIT %s :%s", source_p->name, comment); | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | /* | |
1049 | ** Remove all clients that depend on source_p; assumes all (S)QUITs have | |
1050 | ** already been sent. we make sure to exit a server's dependent clients | |
1051 | ** and servers before the server itself; exit_one_client takes care of | |
1052 | ** actually removing things off llists. tweaked from +CSr31 -orabidoo | |
1053 | */ | |
1054 | /* | |
1055 | * added sanity test code.... source_p->serv might be NULL... | |
1056 | */ | |
1057 | static void | |
1058 | recurse_remove_clients(struct Client *source_p, const char *comment) | |
1059 | { | |
1060 | struct Client *target_p; | |
1061 | rb_dlink_node *ptr, *ptr_next; | |
1062 | ||
1063 | if(IsMe(source_p)) | |
1064 | return; | |
1065 | ||
1066 | if(source_p->serv == NULL) /* oooops. uh this is actually a major bug */ | |
1067 | return; | |
1068 | ||
1069 | /* this is very ugly, but it saves cpu :P */ | |
1070 | if(ConfigFileEntry.nick_delay > 0) | |
1071 | { | |
1072 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1073 | { | |
1074 | target_p = ptr->data; | |
1075 | target_p->flags |= FLAGS_KILLED; | |
1076 | add_nd_entry(target_p->name); | |
1077 | ||
1078 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1079 | exit_remote_client(NULL, target_p, &me, comment); | |
1080 | } | |
1081 | } | |
1082 | else | |
1083 | { | |
1084 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1085 | { | |
1086 | target_p = ptr->data; | |
1087 | target_p->flags |= FLAGS_KILLED; | |
1088 | ||
1089 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1090 | exit_remote_client(NULL, target_p, &me, comment); | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) | |
1095 | { | |
1096 | target_p = ptr->data; | |
1097 | recurse_remove_clients(target_p, comment); | |
1098 | qs_server(NULL, target_p, &me, comment); | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | /* | |
1103 | ** Remove *everything* that depends on source_p, from all lists, and sending | |
1104 | ** all necessary QUITs and SQUITs. source_p itself is still on the lists, | |
1105 | ** and its SQUITs have been sent except for the upstream one -orabidoo | |
1106 | */ | |
1107 | static void | |
1108 | remove_dependents(struct Client *client_p, | |
1109 | struct Client *source_p, | |
1110 | struct Client *from, const char *comment, const char *comment1) | |
1111 | { | |
1112 | struct Client *to; | |
1113 | rb_dlink_node *ptr, *next; | |
1114 | ||
1115 | RB_DLINK_FOREACH_SAFE(ptr, next, serv_list.head) | |
1116 | { | |
1117 | to = ptr->data; | |
1118 | ||
1119 | if(IsMe(to) || to == source_p->from || | |
1120 | (to == client_p && IsCapable(to, CAP_QS))) | |
1121 | continue; | |
1122 | ||
1123 | recurse_send_quits(client_p, source_p, to, comment1, comment); | |
1124 | } | |
1125 | ||
1126 | recurse_remove_clients(source_p, comment1); | |
1127 | } | |
1128 | ||
1129 | void | |
1130 | exit_aborted_clients(void *unused) | |
1131 | { | |
1132 | struct abort_client *abt; | |
1133 | rb_dlink_node *ptr, *next; | |
1134 | RB_DLINK_FOREACH_SAFE(ptr, next, abort_list.head) | |
1135 | { | |
1136 | abt = ptr->data; | |
1137 | ||
1138 | #ifdef DEBUG_EXITED_CLIENTS | |
1139 | { | |
1140 | if(rb_dlinkFind(abt->client, &dead_list)) | |
1141 | { | |
1142 | s_assert(0); | |
1143 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1144 | "On dead_list: %s stat: %u flags: %u/%u handler: %c", | |
1145 | abt->client->name, (unsigned int) abt->client->status, | |
1146 | abt->client->flags, abt->client->flags2, abt->client->handler); | |
1147 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1148 | "Please report this to the charybdis developers!"); | |
1149 | continue; | |
1150 | } | |
1151 | } | |
1152 | #endif | |
1153 | ||
1154 | s_assert(*((unsigned long*)abt->client) != 0xdeadbeef); /* This is lame but its a debug thing */ | |
1155 | rb_dlinkDelete(ptr, &abort_list); | |
1156 | ||
1157 | if(IsAnyServer(abt->client)) | |
1158 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1159 | "Closing link to %s: %s", | |
1160 | abt->client->name, abt->notice); | |
1161 | ||
1162 | /* its no longer on abort list - we *must* remove | |
1163 | * FLAGS_CLOSING otherwise exit_client() will not run --fl | |
1164 | */ | |
1165 | abt->client->flags &= ~FLAGS_CLOSING; | |
1166 | exit_client(abt->client, abt->client, &me, abt->notice); | |
1167 | rb_free(abt); | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | ||
1172 | /* | |
1173 | * dead_link - Adds client to a list of clients that need an exit_client() | |
1174 | * | |
1175 | */ | |
1176 | void | |
1177 | dead_link(struct Client *client_p) | |
1178 | { | |
1179 | struct abort_client *abt; | |
1180 | ||
1181 | s_assert(!IsMe(client_p)); | |
1182 | if(IsDead(client_p) || IsClosing(client_p) || IsMe(client_p)) | |
1183 | return; | |
1184 | ||
1185 | abt = (struct abort_client *) rb_malloc(sizeof(struct abort_client)); | |
1186 | ||
1187 | if(client_p->flags & FLAGS_SENDQEX) | |
1188 | rb_strlcpy(abt->notice, "Max SendQ exceeded", sizeof(abt->notice)); | |
1189 | else | |
1190 | rb_snprintf(abt->notice, sizeof(abt->notice), "Write error: %s", strerror(errno)); | |
1191 | ||
1192 | abt->client = client_p; | |
1193 | SetIOError(client_p); | |
1194 | SetDead(client_p); | |
1195 | SetClosing(client_p); | |
1196 | rb_dlinkAdd(abt, &abt->node, &abort_list); | |
1197 | } | |
1198 | ||
1199 | ||
1200 | /* This does the remove of the user from channels..local or remote */ | |
1201 | static inline void | |
1202 | exit_generic_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1203 | const char *comment) | |
1204 | { | |
1205 | rb_dlink_node *ptr, *next_ptr; | |
1206 | ||
1207 | if(IsOper(source_p)) | |
1208 | rb_dlinkFindDestroy(source_p, &oper_list); | |
1209 | ||
1210 | sendto_common_channels_local(source_p, ":%s!%s@%s QUIT :%s", | |
1211 | source_p->name, | |
1212 | source_p->username, source_p->host, comment); | |
1213 | ||
1214 | remove_user_from_channels(source_p); | |
1215 | ||
1216 | /* Should not be in any channels now */ | |
1217 | s_assert(source_p->user->channel.head == NULL); | |
1218 | ||
1219 | /* Clean up invitefield */ | |
1220 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->user->invited.head) | |
1221 | { | |
1222 | del_invite(ptr->data, source_p); | |
1223 | } | |
1224 | ||
1225 | /* Clean up allow lists */ | |
1226 | del_all_accepts(source_p); | |
1227 | ||
1228 | add_history(source_p, 0); | |
1229 | off_history(source_p); | |
1230 | ||
1231 | monitor_signoff(source_p); | |
1232 | ||
1233 | if(has_id(source_p)) | |
1234 | del_from_id_hash(source_p->id, source_p); | |
1235 | ||
1236 | del_from_hostname_hash(source_p->orighost, source_p); | |
1237 | del_from_client_hash(source_p->name, source_p); | |
1238 | remove_client_from_list(source_p); | |
1239 | } | |
1240 | ||
1241 | /* | |
1242 | * Assumes IsPerson(source_p) && !MyConnect(source_p) | |
1243 | */ | |
1244 | ||
1245 | static int | |
1246 | exit_remote_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1247 | const char *comment) | |
1248 | { | |
1249 | exit_generic_client(client_p, source_p, from, comment); | |
1250 | ||
1251 | if(source_p->servptr && source_p->servptr->serv) | |
1252 | { | |
1253 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users); | |
1254 | } | |
1255 | ||
1256 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1257 | { | |
1258 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1259 | ":%s QUIT :%s", use_id(source_p), comment); | |
1260 | } | |
1261 | ||
1262 | SetDead(source_p); | |
1263 | #ifdef DEBUG_EXITED_CLIENTS | |
1264 | rb_dlinkAddAlloc(source_p, &dead_remote_list); | |
1265 | #else | |
1266 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1267 | #endif | |
1268 | return(CLIENT_EXITED); | |
1269 | } | |
1270 | ||
1271 | /* | |
1272 | * This assumes IsUnknown(source_p) == TRUE and MyConnect(source_p) == TRUE | |
1273 | */ | |
1274 | ||
1275 | static int | |
1276 | exit_unknown_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1277 | const char *comment) | |
1278 | { | |
1279 | delete_auth_queries(source_p); | |
1280 | if (source_p->localClient->dnsquery) | |
1281 | { | |
1282 | delete_resolver_queries(source_p->localClient->dnsquery); | |
1283 | rb_free(source_p->localClient->dnsquery); | |
1284 | } | |
1285 | rb_dlinkDelete(&source_p->localClient->tnode, &unknown_list); | |
1286 | ||
1287 | if(!IsIOError(source_p)) | |
1288 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", | |
1289 | source_p->user != NULL ? source_p->host : "127.0.0.1", | |
1290 | comment); | |
1291 | ||
1292 | close_connection(source_p); | |
1293 | ||
1294 | if(has_id(source_p)) | |
1295 | del_from_id_hash(source_p->id, source_p); | |
1296 | ||
1297 | del_from_hostname_hash(source_p->host, source_p); | |
1298 | del_from_client_hash(source_p->name, source_p); | |
1299 | remove_client_from_list(source_p); | |
1300 | SetDead(source_p); | |
1301 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1302 | ||
1303 | /* Note that we don't need to add unknowns to the dead_list */ | |
1304 | return(CLIENT_EXITED); | |
1305 | } | |
1306 | ||
1307 | static int | |
1308 | exit_remote_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1309 | const char *comment) | |
1310 | { | |
1311 | static char comment1[(HOSTLEN*2)+2]; | |
1312 | static char newcomment[BUFSIZE]; | |
1313 | struct Client *target_p; | |
1314 | ||
1315 | if(ConfigServerHide.flatten_links) | |
1316 | strcpy(comment1, "*.net *.split"); | |
1317 | else | |
1318 | { | |
1319 | strcpy(comment1, source_p->servptr->name); | |
1320 | strcat(comment1, " "); | |
1321 | strcat(comment1, source_p->name); | |
1322 | } | |
1323 | if (IsPerson(from)) | |
1324 | rb_snprintf(newcomment, sizeof(newcomment), "by %s: %s", | |
1325 | from->name, comment); | |
1326 | ||
1327 | if(source_p->serv != NULL) | |
1328 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1329 | ||
1330 | if(source_p->servptr && source_p->servptr->serv) | |
1331 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1332 | else | |
1333 | s_assert(0); | |
1334 | ||
1335 | rb_dlinkFindDestroy(source_p, &global_serv_list); | |
1336 | target_p = source_p->from; | |
1337 | ||
1338 | if(target_p != NULL && IsServer(target_p) && target_p != client_p && | |
1339 | !IsMe(target_p) && (source_p->flags & FLAGS_KILLED) == 0) | |
1340 | { | |
1341 | sendto_one(target_p, ":%s SQUIT %s :%s", | |
1342 | get_id(from, target_p), get_id(source_p, target_p), | |
1343 | comment); | |
1344 | } | |
1345 | ||
1346 | if(has_id(source_p)) | |
1347 | del_from_id_hash(source_p->id, source_p); | |
1348 | ||
1349 | del_from_client_hash(source_p->name, source_p); | |
1350 | remove_client_from_list(source_p); | |
1351 | scache_split(source_p->serv->nameinfo); | |
1352 | ||
1353 | SetDead(source_p); | |
1354 | #ifdef DEBUG_EXITED_CLIENTS | |
1355 | rb_dlinkAddAlloc(source_p, &dead_remote_list); | |
1356 | #else | |
1357 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1358 | #endif | |
1359 | return 0; | |
1360 | } | |
1361 | ||
1362 | static int | |
1363 | qs_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1364 | const char *comment) | |
1365 | { | |
1366 | if(source_p->servptr && source_p->servptr->serv) | |
1367 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1368 | else | |
1369 | s_assert(0); | |
1370 | ||
1371 | rb_dlinkFindDestroy(source_p, &global_serv_list); | |
1372 | ||
1373 | if(has_id(source_p)) | |
1374 | del_from_id_hash(source_p->id, source_p); | |
1375 | ||
1376 | del_from_client_hash(source_p->name, source_p); | |
1377 | remove_client_from_list(source_p); | |
1378 | scache_split(source_p->serv->nameinfo); | |
1379 | ||
1380 | SetDead(source_p); | |
1381 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1382 | return 0; | |
1383 | } | |
1384 | ||
1385 | static int | |
1386 | exit_local_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1387 | const char *comment) | |
1388 | { | |
1389 | static char comment1[(HOSTLEN*2)+2]; | |
1390 | static char newcomment[BUFSIZE]; | |
1391 | unsigned int sendk, recvk; | |
1392 | ||
1393 | rb_dlinkDelete(&source_p->localClient->tnode, &serv_list); | |
1394 | rb_dlinkFindDestroy(source_p, &global_serv_list); | |
1395 | ||
1396 | unset_chcap_usage_counts(source_p); | |
1397 | sendk = source_p->localClient->sendK; | |
1398 | recvk = source_p->localClient->receiveK; | |
1399 | ||
1400 | /* Always show source here, so the server notices show | |
1401 | * which side initiated the split -- jilles | |
1402 | */ | |
1403 | rb_snprintf(newcomment, sizeof(newcomment), "by %s: %s", | |
1404 | from == source_p ? me.name : from->name, comment); | |
1405 | if (!IsIOError(source_p)) | |
1406 | sendto_one(source_p, "SQUIT %s :%s", use_id(source_p), | |
1407 | newcomment); | |
1408 | if(client_p != NULL && source_p != client_p && !IsIOError(source_p)) | |
1409 | { | |
1410 | sendto_one(source_p, "ERROR :Closing Link: 127.0.0.1 %s (%s)", | |
1411 | source_p->name, comment); | |
1412 | } | |
1413 | ||
1414 | if(source_p->servptr && source_p->servptr->serv) | |
1415 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1416 | else | |
1417 | s_assert(0); | |
1418 | ||
1419 | ||
1420 | close_connection(source_p); | |
1421 | ||
1422 | if(ConfigServerHide.flatten_links) | |
1423 | strcpy(comment1, "*.net *.split"); | |
1424 | else | |
1425 | { | |
1426 | strcpy(comment1, source_p->servptr->name); | |
1427 | strcat(comment1, " "); | |
1428 | strcat(comment1, source_p->name); | |
1429 | } | |
1430 | ||
1431 | if(source_p->serv != NULL) | |
1432 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1433 | ||
1434 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s was connected" | |
1435 | " for %ld seconds. %d/%d sendK/recvK.", | |
1436 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); | |
1437 | ||
1438 | ilog(L_SERVER, "%s was connected for %ld seconds. %d/%d sendK/recvK.", | |
1439 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); | |
1440 | ||
1441 | if(has_id(source_p)) | |
1442 | del_from_id_hash(source_p->id, source_p); | |
1443 | ||
1444 | del_from_client_hash(source_p->name, source_p); | |
1445 | remove_client_from_list(source_p); | |
1446 | scache_split(source_p->serv->nameinfo); | |
1447 | ||
1448 | SetDead(source_p); | |
1449 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1450 | return 0; | |
1451 | } | |
1452 | ||
1453 | ||
1454 | /* | |
1455 | * This assumes IsPerson(source_p) == TRUE && MyConnect(source_p) == TRUE | |
1456 | */ | |
1457 | ||
1458 | static int | |
1459 | exit_local_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1460 | const char *comment) | |
1461 | { | |
1462 | unsigned long on_for; | |
1463 | char tbuf[26]; | |
1464 | ||
1465 | exit_generic_client(client_p, source_p, from, comment); | |
1466 | clear_monitor(source_p); | |
1467 | ||
1468 | s_assert(IsPerson(source_p)); | |
1469 | rb_dlinkDelete(&source_p->localClient->tnode, &lclient_list); | |
1470 | rb_dlinkDelete(&source_p->lnode, &me.serv->users); | |
1471 | ||
1472 | if(IsOper(source_p)) | |
1473 | rb_dlinkFindDestroy(source_p, &local_oper_list); | |
1474 | ||
1475 | sendto_realops_snomask(SNO_CCONN, L_ALL, | |
1476 | "Client exiting: %s (%s@%s) [%s] [%s]", | |
1477 | source_p->name, | |
1478 | source_p->username, source_p->host, comment, | |
1479 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255"); | |
1480 | ||
1481 | sendto_realops_snomask(SNO_CCONNEXT, L_ALL, | |
1482 | "CLIEXIT %s %s %s %s 0 %s", | |
1483 | source_p->name, source_p->username, source_p->host, | |
1484 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255", | |
1485 | comment); | |
1486 | ||
1487 | on_for = rb_current_time() - source_p->localClient->firsttime; | |
1488 | ||
1489 | ilog(L_USER, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d", | |
1490 | rb_ctime(rb_current_time(), tbuf, sizeof(tbuf)), on_for / 3600, | |
1491 | (on_for % 3600) / 60, on_for % 60, | |
1492 | source_p->name, source_p->username, source_p->host, | |
1493 | source_p->sockhost, | |
1494 | source_p->localClient->sendK, source_p->localClient->receiveK); | |
1495 | ||
1496 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", source_p->host, comment); | |
1497 | close_connection(source_p); | |
1498 | ||
1499 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1500 | { | |
1501 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1502 | ":%s QUIT :%s", use_id(source_p), comment); | |
1503 | } | |
1504 | ||
1505 | SetDead(source_p); | |
1506 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1507 | return(CLIENT_EXITED); | |
1508 | } | |
1509 | ||
1510 | ||
1511 | /* | |
1512 | ** exit_client - This is old "m_bye". Name changed, because this is not a | |
1513 | ** protocol function, but a general server utility function. | |
1514 | ** | |
1515 | ** This function exits a client of *any* type (user, server, etc) | |
1516 | ** from this server. Also, this generates all necessary prototol | |
1517 | ** messages that this exit may cause. | |
1518 | ** | |
1519 | ** 1) If the client is a local client, then this implicitly | |
1520 | ** exits all other clients depending on this connection (e.g. | |
1521 | ** remote clients having 'from'-field that points to this. | |
1522 | ** | |
1523 | ** 2) If the client is a remote client, then only this is exited. | |
1524 | ** | |
1525 | ** For convenience, this function returns a suitable value for | |
1526 | ** m_function return value: | |
1527 | ** | |
1528 | ** CLIENT_EXITED if (client_p == source_p) | |
1529 | ** 0 if (client_p != source_p) | |
1530 | */ | |
1531 | int | |
1532 | exit_client(struct Client *client_p, /* The local client originating the | |
1533 | * exit or NULL, if this exit is | |
1534 | * generated by this server for | |
1535 | * internal reasons. | |
1536 | * This will not get any of the | |
1537 | * generated messages. */ | |
1538 | struct Client *source_p, /* Client exiting */ | |
1539 | struct Client *from, /* Client firing off this Exit, | |
1540 | * never NULL! */ | |
1541 | const char *comment /* Reason for the exit */ | |
1542 | ) | |
1543 | { | |
1544 | hook_data_client_exit hdata; | |
1545 | if(IsClosing(source_p)) | |
1546 | return -1; | |
1547 | ||
1548 | /* note, this HAS to be here, when we exit a client we attempt to | |
1549 | * send them data, if this generates a write error we must *not* add | |
1550 | * them to the abort list --fl | |
1551 | */ | |
1552 | SetClosing(source_p); | |
1553 | ||
1554 | hdata.local_link = client_p; | |
1555 | hdata.target = source_p; | |
1556 | hdata.from = from; | |
1557 | hdata.comment = comment; | |
1558 | call_hook(h_client_exit, &hdata); | |
1559 | ||
1560 | if(MyConnect(source_p)) | |
1561 | { | |
1562 | /* Local clients of various types */ | |
1563 | if(IsPerson(source_p)) | |
1564 | return exit_local_client(client_p, source_p, from, comment); | |
1565 | else if(IsServer(source_p)) | |
1566 | return exit_local_server(client_p, source_p, from, comment); | |
1567 | /* IsUnknown || IsConnecting || IsHandShake */ | |
1568 | else if(!IsReject(source_p)) | |
1569 | return exit_unknown_client(client_p, source_p, from, comment); | |
1570 | } | |
1571 | else | |
1572 | { | |
1573 | /* Remotes */ | |
1574 | if(IsPerson(source_p)) | |
1575 | return exit_remote_client(client_p, source_p, from, comment); | |
1576 | else if(IsServer(source_p)) | |
1577 | return exit_remote_server(client_p, source_p, from, comment); | |
1578 | } | |
1579 | ||
1580 | return -1; | |
1581 | } | |
1582 | ||
1583 | /* | |
1584 | * Count up local client memory | |
1585 | */ | |
1586 | ||
1587 | /* XXX one common Client list now */ | |
1588 | void | |
1589 | count_local_client_memory(size_t * count, size_t * local_client_memory_used) | |
1590 | { | |
1591 | size_t lusage; | |
1592 | rb_bh_usage(lclient_heap, count, NULL, &lusage, NULL); | |
1593 | *local_client_memory_used = lusage + (*count * (sizeof(void *) + sizeof(struct Client))); | |
1594 | } | |
1595 | ||
1596 | /* | |
1597 | * Count up remote client memory | |
1598 | */ | |
1599 | void | |
1600 | count_remote_client_memory(size_t * count, size_t * remote_client_memory_used) | |
1601 | { | |
1602 | size_t lcount, rcount; | |
1603 | rb_bh_usage(lclient_heap, &lcount, NULL, NULL, NULL); | |
1604 | rb_bh_usage(client_heap, &rcount, NULL, NULL, NULL); | |
1605 | *count = rcount - lcount; | |
1606 | *remote_client_memory_used = *count * (sizeof(void *) + sizeof(struct Client)); | |
1607 | } | |
1608 | ||
1609 | ||
1610 | /* | |
1611 | * accept processing, this adds a form of "caller ID" to ircd | |
1612 | * | |
1613 | * If a client puts themselves into "caller ID only" mode, | |
1614 | * only clients that match a client pointer they have put on | |
1615 | * the accept list will be allowed to message them. | |
1616 | * | |
1617 | * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ] | |
1618 | * | |
1619 | * [target.allow_list] -> [ source1 ] -> [source2 ] | |
1620 | * | |
1621 | * i.e. a target will have a link list of source pointers it will allow | |
1622 | * each source client then has a back pointer pointing back | |
1623 | * to the client that has it on its accept list. | |
1624 | * This allows for exit_one_client to remove these now bogus entries | |
1625 | * from any client having an accept on them. | |
1626 | */ | |
1627 | /* | |
1628 | * del_all_accepts | |
1629 | * | |
1630 | * inputs - pointer to exiting client | |
1631 | * output - NONE | |
1632 | * side effects - Walk through given clients allow_list and on_allow_list | |
1633 | * remove all references to this client | |
1634 | */ | |
1635 | void | |
1636 | del_all_accepts(struct Client *client_p) | |
1637 | { | |
1638 | rb_dlink_node *ptr; | |
1639 | rb_dlink_node *next_ptr; | |
1640 | struct Client *target_p; | |
1641 | ||
1642 | if(MyClient(client_p) && client_p->localClient->allow_list.head) | |
1643 | { | |
1644 | /* clear this clients accept list, and remove them from | |
1645 | * everyones on_accept_list | |
1646 | */ | |
1647 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->allow_list.head) | |
1648 | { | |
1649 | target_p = ptr->data; | |
1650 | rb_dlinkFindDestroy(client_p, &target_p->on_allow_list); | |
1651 | rb_dlinkDestroy(ptr, &client_p->localClient->allow_list); | |
1652 | } | |
1653 | } | |
1654 | ||
1655 | /* remove this client from everyones accept list */ | |
1656 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) | |
1657 | { | |
1658 | target_p = ptr->data; | |
1659 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); | |
1660 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
1661 | } | |
1662 | } | |
1663 | ||
1664 | /* | |
1665 | * show_ip() - asks if the true IP shoudl be shown when source is | |
1666 | * askin for info about target | |
1667 | * | |
1668 | * Inputs - source_p who is asking | |
1669 | * - target_p who do we want the info on | |
1670 | * Output - returns 1 if clear IP can be showed, otherwise 0 | |
1671 | * Side Effects - none | |
1672 | */ | |
1673 | ||
1674 | int | |
1675 | show_ip(struct Client *source_p, struct Client *target_p) | |
1676 | { | |
1677 | if(IsAnyServer(target_p)) | |
1678 | { | |
1679 | return 0; | |
1680 | } | |
1681 | else if(IsIPSpoof(target_p)) | |
1682 | { | |
1683 | /* source == NULL indicates message is being sent | |
1684 | * to local opers. | |
1685 | */ | |
1686 | if(!ConfigFileEntry.hide_spoof_ips && | |
1687 | (source_p == NULL || MyOper(source_p))) | |
1688 | return 1; | |
1689 | return 0; | |
1690 | } | |
1691 | else if(IsDynSpoof(target_p) && (source_p != NULL && !IsOper(source_p))) | |
1692 | return 0; | |
1693 | else | |
1694 | return 1; | |
1695 | } | |
1696 | ||
1697 | int | |
1698 | show_ip_conf(struct ConfItem *aconf, struct Client *source_p) | |
1699 | { | |
1700 | if(IsConfDoSpoofIp(aconf)) | |
1701 | { | |
1702 | if(!ConfigFileEntry.hide_spoof_ips && MyOper(source_p)) | |
1703 | return 1; | |
1704 | ||
1705 | return 0; | |
1706 | } | |
1707 | else | |
1708 | return 1; | |
1709 | } | |
1710 | ||
1711 | /* | |
1712 | * make_user | |
1713 | * | |
1714 | * inputs - pointer to client struct | |
1715 | * output - pointer to struct User | |
1716 | * side effects - add's an User information block to a client | |
1717 | * if it was not previously allocated. | |
1718 | */ | |
1719 | struct User * | |
1720 | make_user(struct Client *client_p) | |
1721 | { | |
1722 | struct User *user; | |
1723 | ||
1724 | user = client_p->user; | |
1725 | if(!user) | |
1726 | { | |
1727 | user = (struct User *) rb_bh_alloc(user_heap); | |
1728 | user->refcnt = 1; | |
1729 | client_p->user = user; | |
1730 | } | |
1731 | return user; | |
1732 | } | |
1733 | ||
1734 | /* | |
1735 | * make_server | |
1736 | * | |
1737 | * inputs - pointer to client struct | |
1738 | * output - pointer to server_t | |
1739 | * side effects - add's an Server information block to a client | |
1740 | * if it was not previously allocated. | |
1741 | */ | |
1742 | server_t * | |
1743 | make_server(struct Client *client_p) | |
1744 | { | |
1745 | server_t *serv = client_p->serv; | |
1746 | ||
1747 | if(!serv) | |
1748 | { | |
1749 | serv = (server_t *) rb_malloc(sizeof(server_t)); | |
1750 | client_p->serv = serv; | |
1751 | } | |
1752 | return client_p->serv; | |
1753 | } | |
1754 | ||
1755 | /* | |
1756 | * free_user | |
1757 | * | |
1758 | * inputs - pointer to user struct | |
1759 | * - pointer to client struct | |
1760 | * output - none | |
1761 | * side effects - Decrease user reference count by one and release block, | |
1762 | * if count reaches 0 | |
1763 | */ | |
1764 | void | |
1765 | free_user(struct User *user, struct Client *client_p) | |
1766 | { | |
1767 | free_away(client_p); | |
1768 | ||
1769 | if(--user->refcnt <= 0) | |
1770 | { | |
1771 | if(user->away) | |
1772 | rb_free((char *) user->away); | |
1773 | /* | |
1774 | * sanity check | |
1775 | */ | |
1776 | if(user->refcnt < 0 || user->invited.head || user->channel.head) | |
1777 | { | |
1778 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1779 | "* %#lx user (%s!%s@%s) %#lx %#lx %#lx %lu %d *", | |
1780 | (unsigned long) client_p, | |
1781 | client_p ? client_p-> | |
1782 | name : "<noname>", | |
1783 | client_p->username, | |
1784 | client_p->host, | |
1785 | (unsigned long) user, | |
1786 | (unsigned long) user->invited.head, | |
1787 | (unsigned long) user->channel.head, | |
1788 | rb_dlink_list_length(&user->channel), | |
1789 | user->refcnt); | |
1790 | s_assert(!user->refcnt); | |
1791 | s_assert(!user->invited.head); | |
1792 | s_assert(!user->channel.head); | |
1793 | } | |
1794 | ||
1795 | rb_bh_free(user_heap, user); | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | void | |
1800 | allocate_away(struct Client *client_p) | |
1801 | { | |
1802 | if(client_p->user->away == NULL) | |
1803 | client_p->user->away = rb_bh_alloc(away_heap); | |
1804 | } | |
1805 | ||
1806 | ||
1807 | void | |
1808 | free_away(struct Client *client_p) | |
1809 | { | |
1810 | if(client_p->user != NULL && client_p->user->away != NULL) { | |
1811 | rb_bh_free(away_heap, client_p->user->away); | |
1812 | client_p->user->away = NULL; | |
1813 | } | |
1814 | } | |
1815 | ||
1816 | void | |
1817 | init_uid(void) | |
1818 | { | |
1819 | int i; | |
1820 | ||
1821 | for(i = 0; i < 3; i++) | |
1822 | current_uid[i] = me.id[i]; | |
1823 | ||
1824 | for(i = 3; i < 9; i++) | |
1825 | current_uid[i] = 'A'; | |
1826 | ||
1827 | current_uid[9] = '\0'; | |
1828 | } | |
1829 | ||
1830 | ||
1831 | char * | |
1832 | generate_uid(void) | |
1833 | { | |
1834 | int i; | |
1835 | ||
1836 | for(i = 8; i > 3; i--) | |
1837 | { | |
1838 | if(current_uid[i] == 'Z') | |
1839 | { | |
1840 | current_uid[i] = '0'; | |
1841 | return current_uid; | |
1842 | } | |
1843 | else if(current_uid[i] != '9') | |
1844 | { | |
1845 | current_uid[i]++; | |
1846 | return current_uid; | |
1847 | } | |
1848 | else | |
1849 | current_uid[i] = 'A'; | |
1850 | } | |
1851 | ||
1852 | /* if this next if() triggers, we're fucked. */ | |
1853 | if(current_uid[3] == 'Z') | |
1854 | { | |
1855 | current_uid[i] = 'A'; | |
1856 | s_assert(0); | |
1857 | } | |
1858 | else | |
1859 | current_uid[i]++; | |
1860 | ||
1861 | return current_uid; | |
1862 | } | |
1863 | ||
1864 | /* | |
1865 | * close_connection | |
1866 | * Close the physical connection. This function must make | |
1867 | * MyConnect(client_p) == FALSE, and set client_p->from == NULL. | |
1868 | */ | |
1869 | void | |
1870 | close_connection(struct Client *client_p) | |
1871 | { | |
1872 | s_assert(client_p != NULL); | |
1873 | if(client_p == NULL) | |
1874 | return; | |
1875 | ||
1876 | s_assert(MyConnect(client_p)); | |
1877 | if(!MyConnect(client_p)) | |
1878 | return; | |
1879 | ||
1880 | if(IsServer(client_p)) | |
1881 | { | |
1882 | struct server_conf *server_p; | |
1883 | ||
1884 | ServerStats.is_sv++; | |
1885 | ServerStats.is_sbs += client_p->localClient->sendB; | |
1886 | ServerStats.is_sbr += client_p->localClient->receiveB; | |
1887 | ServerStats.is_sti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); | |
1888 | ||
1889 | /* | |
1890 | * If the connection has been up for a long amount of time, schedule | |
1891 | * a 'quick' reconnect, else reset the next-connect cycle. | |
1892 | */ | |
1893 | if((server_p = find_server_conf(client_p->name)) != NULL) | |
1894 | { | |
1895 | /* | |
1896 | * Reschedule a faster reconnect, if this was a automatically | |
1897 | * connected configuration entry. (Note that if we have had | |
1898 | * a rehash in between, the status has been changed to | |
1899 | * CONF_ILLEGAL). But only do this if it was a "good" link. | |
1900 | */ | |
1901 | server_p->hold = time(NULL); | |
1902 | server_p->hold += | |
1903 | (server_p->hold - client_p->localClient->lasttime > | |
1904 | HANGONGOODLINK) ? HANGONRETRYDELAY : ConFreq(server_p->class); | |
1905 | } | |
1906 | ||
1907 | } | |
1908 | else if(IsClient(client_p)) | |
1909 | { | |
1910 | ServerStats.is_cl++; | |
1911 | ServerStats.is_cbs += client_p->localClient->sendB; | |
1912 | ServerStats.is_cbr += client_p->localClient->receiveB; | |
1913 | ServerStats.is_cti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); | |
1914 | } | |
1915 | else | |
1916 | ServerStats.is_ni++; | |
1917 | ||
1918 | if(client_p->localClient->F != NULL) | |
1919 | { | |
1920 | /* attempt to flush any pending dbufs. Evil, but .. -- adrian */ | |
1921 | if(!IsIOError(client_p)) | |
1922 | send_queued(client_p); | |
1923 | ||
1924 | del_from_cli_fd_hash(client_p); | |
1925 | rb_close(client_p->localClient->F); | |
1926 | client_p->localClient->F = NULL; | |
1927 | } | |
1928 | ||
1929 | rb_linebuf_donebuf(&client_p->localClient->buf_sendq); | |
1930 | rb_linebuf_donebuf(&client_p->localClient->buf_recvq); | |
1931 | detach_conf(client_p); | |
1932 | ||
1933 | /* XXX shouldnt really be done here. */ | |
1934 | detach_server_conf(client_p); | |
1935 | ||
1936 | client_p->from = NULL; /* ...this should catch them! >:) --msa */ | |
1937 | ClearMyConnect(client_p); | |
1938 | SetIOError(client_p); | |
1939 | } | |
1940 | ||
1941 | ||
1942 | ||
1943 | void | |
1944 | error_exit_client(struct Client *client_p, int error) | |
1945 | { | |
1946 | /* | |
1947 | * ...hmm, with non-blocking sockets we might get | |
1948 | * here from quite valid reasons, although.. why | |
1949 | * would select report "data available" when there | |
1950 | * wasn't... so, this must be an error anyway... --msa | |
1951 | * actually, EOF occurs when read() returns 0 and | |
1952 | * in due course, select() returns that fd as ready | |
1953 | * for reading even though it ends up being an EOF. -avalon | |
1954 | */ | |
1955 | char errmsg[255]; | |
1956 | int current_error = rb_get_sockerr(client_p->localClient->F); | |
1957 | ||
1958 | SetIOError(client_p); | |
1959 | ||
1960 | if(IsServer(client_p) || IsHandshake(client_p)) | |
1961 | { | |
1962 | if(error == 0) | |
1963 | { | |
1964 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
1965 | "Server %s closed the connection", | |
1966 | client_p->name); | |
1967 | ||
1968 | ilog(L_SERVER, "Server %s closed the connection", | |
1969 | log_client_name(client_p, SHOW_IP)); | |
1970 | } | |
1971 | else | |
1972 | { | |
1973 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
1974 | "Lost connection to %s: %s", | |
1975 | client_p->name, strerror(current_error)); | |
1976 | ilog(L_SERVER, "Lost connection to %s: %s", | |
1977 | log_client_name(client_p, SHOW_IP), strerror(current_error)); | |
1978 | } | |
1979 | } | |
1980 | ||
1981 | if(error == 0) | |
1982 | rb_strlcpy(errmsg, "Remote host closed the connection", sizeof(errmsg)); | |
1983 | else | |
1984 | rb_snprintf(errmsg, sizeof(errmsg), "Read error: %s", strerror(current_error)); | |
1985 | ||
1986 | exit_client(client_p, client_p, &me, errmsg); | |
1987 | } |