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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 | #include "stdinc.h" | |
26 | #include "defaults.h" | |
27 | ||
28 | #include "client.h" | |
29 | #include "class.h" | |
30 | #include "hash.h" | |
31 | #include "match.h" | |
32 | #include "ircd.h" | |
33 | #include "numeric.h" | |
34 | #include "packet.h" | |
35 | #include "authproc.h" | |
36 | #include "s_conf.h" | |
37 | #include "s_newconf.h" | |
38 | #include "logger.h" | |
39 | #include "s_serv.h" | |
40 | #include "s_stats.h" | |
41 | #include "send.h" | |
42 | #include "whowas.h" | |
43 | #include "s_user.h" | |
44 | #include "hash.h" | |
45 | #include "hostmask.h" | |
46 | #include "listener.h" | |
47 | #include "hook.h" | |
48 | #include "msg.h" | |
49 | #include "monitor.h" | |
50 | #include "reject.h" | |
51 | #include "scache.h" | |
52 | #include "rb_dictionary.h" | |
53 | #include "sslproc.h" | |
54 | #include "wsproc.h" | |
55 | #include "s_assert.h" | |
56 | ||
57 | #define DEBUG_EXITED_CLIENTS | |
58 | ||
59 | static void check_pings_list(rb_dlink_list * list); | |
60 | static void check_unknowns_list(rb_dlink_list * list); | |
61 | static void free_exited_clients(void *unused); | |
62 | static void exit_aborted_clients(void *unused); | |
63 | ||
64 | static int exit_remote_client(struct Client *, struct Client *, struct Client *,const char *); | |
65 | static int exit_remote_server(struct Client *, struct Client *, struct Client *,const char *); | |
66 | static int exit_local_client(struct Client *, struct Client *, struct Client *,const char *); | |
67 | static int exit_unknown_client(struct Client *, struct Client *, struct Client *,const char *); | |
68 | static int exit_local_server(struct Client *, struct Client *, struct Client *,const char *); | |
69 | static int qs_server(struct Client *, struct Client *, struct Client *, const char *comment); | |
70 | ||
71 | static EVH check_pings; | |
72 | ||
73 | static rb_bh *client_heap = NULL; | |
74 | static rb_bh *lclient_heap = NULL; | |
75 | static rb_bh *pclient_heap = NULL; | |
76 | static rb_bh *user_heap = NULL; | |
77 | static rb_bh *away_heap = NULL; | |
78 | static char current_uid[IDLEN]; | |
79 | static uint32_t current_connid = 0; | |
80 | ||
81 | rb_dictionary *nd_dict = NULL; | |
82 | ||
83 | enum | |
84 | { | |
85 | D_LINED, | |
86 | K_LINED | |
87 | }; | |
88 | ||
89 | rb_dlink_list dead_list; | |
90 | #ifdef DEBUG_EXITED_CLIENTS | |
91 | static rb_dlink_list dead_remote_list; | |
92 | #endif | |
93 | ||
94 | struct abort_client | |
95 | { | |
96 | rb_dlink_node node; | |
97 | struct Client *client; | |
98 | char notice[REASONLEN]; | |
99 | }; | |
100 | ||
101 | static rb_dlink_list abort_list; | |
102 | ||
103 | ||
104 | /* | |
105 | * init_client | |
106 | * | |
107 | * inputs - NONE | |
108 | * output - NONE | |
109 | * side effects - initialize client free memory | |
110 | */ | |
111 | void | |
112 | init_client(void) | |
113 | { | |
114 | /* | |
115 | * start off the check ping event .. -- adrian | |
116 | * Every 30 seconds is plenty -- db | |
117 | */ | |
118 | client_heap = rb_bh_create(sizeof(struct Client), CLIENT_HEAP_SIZE, "client_heap"); | |
119 | lclient_heap = rb_bh_create(sizeof(struct LocalUser), LCLIENT_HEAP_SIZE, "lclient_heap"); | |
120 | pclient_heap = rb_bh_create(sizeof(struct PreClient), PCLIENT_HEAP_SIZE, "pclient_heap"); | |
121 | user_heap = rb_bh_create(sizeof(struct User), USER_HEAP_SIZE, "user_heap"); | |
122 | away_heap = rb_bh_create(AWAYLEN, AWAY_HEAP_SIZE, "away_heap"); | |
123 | ||
124 | rb_event_addish("check_pings", check_pings, NULL, 30); | |
125 | rb_event_addish("free_exited_clients", &free_exited_clients, NULL, 4); | |
126 | rb_event_addish("exit_aborted_clients", exit_aborted_clients, NULL, 1); | |
127 | rb_event_add("flood_recalc", flood_recalc, NULL, 1); | |
128 | ||
129 | nd_dict = rb_dictionary_create("nickdelay", irccmp); | |
130 | } | |
131 | ||
132 | /* | |
133 | * connid_get - allocate a connid | |
134 | * | |
135 | * inputs - none | |
136 | * outputs - a connid token which is used to represent a logical circuit | |
137 | * side effects - current_connid is incremented, possibly multiple times. | |
138 | * the association of the connid to it's client is committed. | |
139 | */ | |
140 | uint32_t | |
141 | connid_get(struct Client *client_p) | |
142 | { | |
143 | s_assert(MyConnect(client_p)); | |
144 | if (!MyConnect(client_p)) | |
145 | return 0; | |
146 | ||
147 | /* find a connid that is available */ | |
148 | while (find_cli_connid_hash(++current_connid) != NULL) | |
149 | { | |
150 | /* handle wraparound, current_connid must NEVER be 0 */ | |
151 | if (current_connid == 0) | |
152 | ++current_connid; | |
153 | } | |
154 | ||
155 | add_to_cli_connid_hash(client_p, current_connid); | |
156 | rb_dlinkAddAlloc(RB_UINT_TO_POINTER(current_connid), &client_p->localClient->connids); | |
157 | ||
158 | return current_connid; | |
159 | } | |
160 | ||
161 | /* | |
162 | * connid_put - free a connid | |
163 | * | |
164 | * inputs - connid to free | |
165 | * outputs - nothing | |
166 | * side effects - connid bookkeeping structures are freed | |
167 | */ | |
168 | void | |
169 | connid_put(uint32_t id) | |
170 | { | |
171 | struct Client *client_p; | |
172 | ||
173 | s_assert(id != 0); | |
174 | if (id == 0) | |
175 | return; | |
176 | ||
177 | client_p = find_cli_connid_hash(id); | |
178 | if (client_p == NULL) | |
179 | return; | |
180 | ||
181 | del_from_cli_connid_hash(id); | |
182 | rb_dlinkFindDestroy(RB_UINT_TO_POINTER(id), &client_p->localClient->connids); | |
183 | } | |
184 | ||
185 | /* | |
186 | * client_release_connids - release any connids still attached to a client | |
187 | * | |
188 | * inputs - client to garbage collect | |
189 | * outputs - none | |
190 | * side effects - client's connids are garbage collected | |
191 | */ | |
192 | void | |
193 | client_release_connids(struct Client *client_p) | |
194 | { | |
195 | rb_dlink_node *ptr, *ptr2; | |
196 | ||
197 | if (client_p->localClient->connids.head) | |
198 | s_assert(MyConnect(client_p)); | |
199 | ||
200 | if (!MyConnect(client_p)) | |
201 | return; | |
202 | ||
203 | RB_DLINK_FOREACH_SAFE(ptr, ptr2, client_p->localClient->connids.head) | |
204 | connid_put(RB_POINTER_TO_UINT(ptr->data)); | |
205 | } | |
206 | ||
207 | /* | |
208 | * make_client - create a new Client struct and set it to initial state. | |
209 | * | |
210 | * from == NULL, create local client (a client connected | |
211 | * to a socket). | |
212 | * | |
213 | * from, create remote client (behind a socket | |
214 | * associated with the client defined by | |
215 | * 'from'). ('from' is a local client!!). | |
216 | */ | |
217 | struct Client * | |
218 | make_client(struct Client *from) | |
219 | { | |
220 | struct Client *client_p = NULL; | |
221 | struct LocalUser *localClient; | |
222 | ||
223 | client_p = rb_bh_alloc(client_heap); | |
224 | ||
225 | if(from == NULL) | |
226 | { | |
227 | client_p->from = client_p; /* 'from' of local client is self! */ | |
228 | ||
229 | localClient = rb_bh_alloc(lclient_heap); | |
230 | SetMyConnect(client_p); | |
231 | client_p->localClient = localClient; | |
232 | ||
233 | client_p->localClient->lasttime = client_p->localClient->firsttime = rb_current_time(); | |
234 | ||
235 | client_p->localClient->F = NULL; | |
236 | ||
237 | client_p->preClient = rb_bh_alloc(pclient_heap); | |
238 | ||
239 | /* as good a place as any... */ | |
240 | rb_dlinkAdd(client_p, &client_p->localClient->tnode, &unknown_list); | |
241 | } | |
242 | else | |
243 | { /* from is not NULL */ | |
244 | client_p->localClient = NULL; | |
245 | client_p->preClient = NULL; | |
246 | client_p->from = from; /* 'from' of local client is self! */ | |
247 | } | |
248 | ||
249 | SetUnknown(client_p); | |
250 | rb_strlcpy(client_p->username, "unknown", sizeof(client_p->username)); | |
251 | ||
252 | return client_p; | |
253 | } | |
254 | ||
255 | void | |
256 | free_pre_client(struct Client *client_p) | |
257 | { | |
258 | s_assert(NULL != client_p); | |
259 | ||
260 | if(client_p->preClient == NULL) | |
261 | return; | |
262 | ||
263 | s_assert(client_p->preClient->auth.cid == 0); | |
264 | ||
265 | rb_free(client_p->preClient->auth.data); | |
266 | rb_free(client_p->preClient->auth.reason); | |
267 | ||
268 | rb_bh_free(pclient_heap, client_p->preClient); | |
269 | client_p->preClient = NULL; | |
270 | } | |
271 | ||
272 | static void | |
273 | free_local_client(struct Client *client_p) | |
274 | { | |
275 | s_assert(NULL != client_p); | |
276 | s_assert(&me != client_p); | |
277 | ||
278 | if(client_p->localClient == NULL) | |
279 | return; | |
280 | ||
281 | /* | |
282 | * clean up extra sockets from P-lines which have been discarded. | |
283 | */ | |
284 | if(client_p->localClient->listener) | |
285 | { | |
286 | s_assert(0 < client_p->localClient->listener->ref_count); | |
287 | if(0 == --client_p->localClient->listener->ref_count | |
288 | && !client_p->localClient->listener->active) | |
289 | free_listener(client_p->localClient->listener); | |
290 | client_p->localClient->listener = 0; | |
291 | } | |
292 | ||
293 | client_release_connids(client_p); | |
294 | if(client_p->localClient->F != NULL) | |
295 | { | |
296 | rb_close(client_p->localClient->F); | |
297 | } | |
298 | ||
299 | if(client_p->localClient->passwd) | |
300 | { | |
301 | memset(client_p->localClient->passwd, 0, | |
302 | strlen(client_p->localClient->passwd)); | |
303 | rb_free(client_p->localClient->passwd); | |
304 | } | |
305 | ||
306 | rb_free(client_p->localClient->auth_user); | |
307 | rb_free(client_p->localClient->challenge); | |
308 | rb_free(client_p->localClient->fullcaps); | |
309 | rb_free(client_p->localClient->opername); | |
310 | rb_free(client_p->localClient->mangledhost); | |
311 | if (client_p->localClient->privset) | |
312 | privilegeset_unref(client_p->localClient->privset); | |
313 | ||
314 | if (IsSSL(client_p)) | |
315 | ssld_decrement_clicount(client_p->localClient->ssl_ctl); | |
316 | ||
317 | if (IsCapable(client_p, CAP_ZIP)) | |
318 | ssld_decrement_clicount(client_p->localClient->z_ctl); | |
319 | ||
320 | if (client_p->localClient->ws_ctl != NULL) | |
321 | wsockd_decrement_clicount(client_p->localClient->ws_ctl); | |
322 | ||
323 | rb_bh_free(lclient_heap, client_p->localClient); | |
324 | client_p->localClient = NULL; | |
325 | } | |
326 | ||
327 | void | |
328 | free_client(struct Client *client_p) | |
329 | { | |
330 | s_assert(NULL != client_p); | |
331 | s_assert(&me != client_p); | |
332 | free_local_client(client_p); | |
333 | free_pre_client(client_p); | |
334 | rb_free(client_p->certfp); | |
335 | rb_bh_free(client_heap, client_p); | |
336 | } | |
337 | ||
338 | /* | |
339 | * check_pings - go through the local client list and check activity | |
340 | * kill off stuff that should die | |
341 | * | |
342 | * inputs - NOT USED (from event) | |
343 | * output - next time_t when check_pings() should be called again | |
344 | * side effects - | |
345 | * | |
346 | * | |
347 | * A PING can be sent to clients as necessary. | |
348 | * | |
349 | * Client/Server ping outs are handled. | |
350 | */ | |
351 | ||
352 | /* | |
353 | * Addon from adrian. We used to call this after nextping seconds, | |
354 | * however I've changed it to run once a second. This is only for | |
355 | * PING timeouts, not K/etc-line checks (thanks dianora!). Having it | |
356 | * run once a second makes life a lot easier - when a new client connects | |
357 | * and they need a ping in 4 seconds, if nextping was set to 20 seconds | |
358 | * we end up waiting 20 seconds. This is stupid. :-) | |
359 | * I will optimise (hah!) check_pings() once I've finished working on | |
360 | * tidying up other network IO evilnesses. | |
361 | * -- adrian | |
362 | */ | |
363 | ||
364 | static void | |
365 | check_pings(void *notused) | |
366 | { | |
367 | check_pings_list(&lclient_list); | |
368 | check_pings_list(&serv_list); | |
369 | check_unknowns_list(&unknown_list); | |
370 | } | |
371 | ||
372 | /* | |
373 | * Check_pings_list() | |
374 | * | |
375 | * inputs - pointer to list to check | |
376 | * output - NONE | |
377 | * side effects - | |
378 | */ | |
379 | static void | |
380 | check_pings_list(rb_dlink_list * list) | |
381 | { | |
382 | char scratch[32]; /* way too generous but... */ | |
383 | struct Client *client_p; /* current local client_p being examined */ | |
384 | int ping = 0; /* ping time value from client */ | |
385 | rb_dlink_node *ptr, *next_ptr; | |
386 | ||
387 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) | |
388 | { | |
389 | client_p = ptr->data; | |
390 | ||
391 | if(!MyConnect(client_p) || IsDead(client_p)) | |
392 | continue; | |
393 | ||
394 | ping = get_client_ping(client_p); | |
395 | ||
396 | if(ping < (rb_current_time() - client_p->localClient->lasttime)) | |
397 | { | |
398 | /* | |
399 | * If the client/server hasnt talked to us in 2*ping seconds | |
400 | * and it has a ping time, then close its connection. | |
401 | */ | |
402 | if(((rb_current_time() - client_p->localClient->lasttime) >= (2 * ping) | |
403 | && (client_p->flags & FLAGS_PINGSENT))) | |
404 | { | |
405 | if(IsServer(client_p)) | |
406 | { | |
407 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
408 | "No response from %s, closing link", | |
409 | client_p->name); | |
410 | ilog(L_SERVER, | |
411 | "No response from %s, closing link", | |
412 | log_client_name(client_p, HIDE_IP)); | |
413 | } | |
414 | (void) snprintf(scratch, sizeof(scratch), | |
415 | "Ping timeout: %d seconds", | |
416 | (int) (rb_current_time() - client_p->localClient->lasttime)); | |
417 | ||
418 | exit_client(client_p, client_p, &me, scratch); | |
419 | continue; | |
420 | } | |
421 | else if((client_p->flags & FLAGS_PINGSENT) == 0) | |
422 | { | |
423 | /* | |
424 | * if we havent PINGed the connection and we havent | |
425 | * heard from it in a while, PING it to make sure | |
426 | * it is still alive. | |
427 | */ | |
428 | client_p->flags |= FLAGS_PINGSENT; | |
429 | /* not nice but does the job */ | |
430 | client_p->localClient->lasttime = rb_current_time() - ping; | |
431 | sendto_one(client_p, "PING :%s", me.name); | |
432 | } | |
433 | } | |
434 | /* ping_timeout: */ | |
435 | ||
436 | } | |
437 | } | |
438 | ||
439 | /* | |
440 | * check_unknowns_list | |
441 | * | |
442 | * inputs - pointer to list of unknown clients | |
443 | * output - NONE | |
444 | * side effects - unknown clients get marked for termination after n seconds | |
445 | */ | |
446 | static void | |
447 | check_unknowns_list(rb_dlink_list * list) | |
448 | { | |
449 | rb_dlink_node *ptr, *next_ptr; | |
450 | struct Client *client_p; | |
451 | int timeout; | |
452 | ||
453 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) | |
454 | { | |
455 | client_p = ptr->data; | |
456 | ||
457 | if(IsDead(client_p) || IsClosing(client_p)) | |
458 | continue; | |
459 | ||
460 | /* Still querying with authd */ | |
461 | if(client_p->preClient != NULL && client_p->preClient->auth.cid != 0) | |
462 | continue; | |
463 | ||
464 | /* | |
465 | * Check UNKNOWN connections - if they have been in this state | |
466 | * for > 30s, close them. | |
467 | */ | |
468 | ||
469 | timeout = IsAnyServer(client_p) ? ConfigFileEntry.connect_timeout : 30; | |
470 | if((rb_current_time() - client_p->localClient->firsttime) > timeout) | |
471 | { | |
472 | if(IsAnyServer(client_p)) | |
473 | { | |
474 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
475 | "No response from %s, closing link", | |
476 | client_p->name); | |
477 | ilog(L_SERVER, | |
478 | "No response from %s, closing link", | |
479 | log_client_name(client_p, HIDE_IP)); | |
480 | } | |
481 | exit_client(client_p, client_p, &me, "Connection timed out"); | |
482 | } | |
483 | } | |
484 | } | |
485 | ||
486 | static void | |
487 | notify_banned_client(struct Client *client_p, struct ConfItem *aconf, int ban) | |
488 | { | |
489 | static const char conn_closed[] = "Connection closed"; | |
490 | static const char d_lined[] = "D-lined"; | |
491 | static const char k_lined[] = "K-lined"; | |
492 | const char *reason = NULL; | |
493 | const char *exit_reason = conn_closed; | |
494 | ||
495 | if(ConfigFileEntry.kline_with_reason) | |
496 | { | |
497 | reason = get_user_ban_reason(aconf); | |
498 | exit_reason = reason; | |
499 | } | |
500 | else | |
501 | { | |
502 | reason = aconf->status == D_LINED ? d_lined : k_lined; | |
503 | } | |
504 | ||
505 | if(ban == D_LINED && !IsPerson(client_p)) | |
506 | sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined"); | |
507 | else | |
508 | sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP), | |
509 | me.name, client_p->name, reason); | |
510 | ||
511 | exit_client(client_p, client_p, &me, | |
512 | EmptyString(ConfigFileEntry.kline_reason) ? exit_reason : | |
513 | ConfigFileEntry.kline_reason); | |
514 | } | |
515 | ||
516 | /* | |
517 | * check_banned_lines | |
518 | * inputs - NONE | |
519 | * output - NONE | |
520 | * side effects - Check all connections for a pending k/dline against the | |
521 | * client, exit the client if found. | |
522 | */ | |
523 | void | |
524 | check_banned_lines(void) | |
525 | { | |
526 | check_dlines(); | |
527 | check_klines(); | |
528 | check_xlines(); | |
529 | } | |
530 | ||
531 | /* check_klines_event() | |
532 | * | |
533 | * inputs - | |
534 | * outputs - | |
535 | * side effects - check_klines() is called, kline_queued unset | |
536 | */ | |
537 | void | |
538 | check_klines_event(void *unused) | |
539 | { | |
540 | kline_queued = false; | |
541 | check_klines(); | |
542 | } | |
543 | ||
544 | /* check_klines | |
545 | * | |
546 | * inputs - | |
547 | * outputs - | |
548 | * side effects - all clients will be checked for klines | |
549 | */ | |
550 | void | |
551 | check_klines(void) | |
552 | { | |
553 | struct Client *client_p; | |
554 | struct ConfItem *aconf; | |
555 | rb_dlink_node *ptr; | |
556 | rb_dlink_node *next_ptr; | |
557 | ||
558 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
559 | { | |
560 | client_p = ptr->data; | |
561 | ||
562 | if(IsMe(client_p) || !IsPerson(client_p)) | |
563 | continue; | |
564 | ||
565 | if((aconf = find_kline(client_p)) != NULL) | |
566 | { | |
567 | if(IsExemptKline(client_p)) | |
568 | { | |
569 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
570 | "KLINE over-ruled for %s, client is kline_exempt [%s@%s]", | |
571 | get_client_name(client_p, HIDE_IP), | |
572 | aconf->user, aconf->host); | |
573 | continue; | |
574 | } | |
575 | ||
576 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
577 | "KLINE active for %s", | |
578 | get_client_name(client_p, HIDE_IP)); | |
579 | ||
580 | notify_banned_client(client_p, aconf, K_LINED); | |
581 | continue; | |
582 | } | |
583 | } | |
584 | } | |
585 | ||
586 | /* check_dlines() | |
587 | * | |
588 | * inputs - | |
589 | * outputs - | |
590 | * side effects - all clients will be checked for dlines | |
591 | */ | |
592 | void | |
593 | check_dlines(void) | |
594 | { | |
595 | struct Client *client_p; | |
596 | struct ConfItem *aconf; | |
597 | rb_dlink_node *ptr; | |
598 | rb_dlink_node *next_ptr; | |
599 | ||
600 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
601 | { | |
602 | client_p = ptr->data; | |
603 | ||
604 | if(IsMe(client_p)) | |
605 | continue; | |
606 | ||
607 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, GET_SS_FAMILY(&client_p->localClient->ip))) != NULL) | |
608 | { | |
609 | if(aconf->status & CONF_EXEMPTDLINE) | |
610 | continue; | |
611 | ||
612 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
613 | "DLINE active for %s", | |
614 | get_client_name(client_p, HIDE_IP)); | |
615 | ||
616 | notify_banned_client(client_p, aconf, D_LINED); | |
617 | continue; | |
618 | } | |
619 | } | |
620 | ||
621 | /* dlines need to be checked against unknowns too */ | |
622 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) | |
623 | { | |
624 | client_p = ptr->data; | |
625 | ||
626 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, GET_SS_FAMILY(&client_p->localClient->ip))) != NULL) | |
627 | { | |
628 | if(aconf->status & CONF_EXEMPTDLINE) | |
629 | continue; | |
630 | ||
631 | notify_banned_client(client_p, aconf, D_LINED); | |
632 | } | |
633 | } | |
634 | } | |
635 | ||
636 | /* check_xlines | |
637 | * | |
638 | * inputs - | |
639 | * outputs - | |
640 | * side effects - all clients will be checked for xlines | |
641 | */ | |
642 | void | |
643 | check_xlines(void) | |
644 | { | |
645 | struct Client *client_p; | |
646 | struct ConfItem *aconf; | |
647 | rb_dlink_node *ptr; | |
648 | rb_dlink_node *next_ptr; | |
649 | ||
650 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
651 | { | |
652 | client_p = ptr->data; | |
653 | ||
654 | if(IsMe(client_p) || !IsPerson(client_p)) | |
655 | continue; | |
656 | ||
657 | if((aconf = find_xline(client_p->info, 1)) != NULL) | |
658 | { | |
659 | if(IsExemptKline(client_p)) | |
660 | { | |
661 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
662 | "XLINE over-ruled for %s, client is kline_exempt [%s]", | |
663 | get_client_name(client_p, HIDE_IP), | |
664 | aconf->host); | |
665 | continue; | |
666 | } | |
667 | ||
668 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
669 | get_client_name(client_p, HIDE_IP)); | |
670 | ||
671 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
672 | continue; | |
673 | } | |
674 | } | |
675 | } | |
676 | ||
677 | /* resv_nick_fnc | |
678 | * | |
679 | * inputs - resv, reason, time | |
680 | * outputs - NONE | |
681 | * side effects - all local clients matching resv will be FNC'd | |
682 | */ | |
683 | void | |
684 | resv_nick_fnc(const char *mask, const char *reason, int temp_time) | |
685 | { | |
686 | struct Client *client_p, *target_p; | |
687 | rb_dlink_node *ptr; | |
688 | rb_dlink_node *next_ptr; | |
689 | char *nick; | |
690 | char note[NICKLEN+10]; | |
691 | ||
692 | if (!ConfigFileEntry.resv_fnc) | |
693 | return; | |
694 | ||
695 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
696 | { | |
697 | client_p = ptr->data; | |
698 | ||
699 | if(IsMe(client_p) || !IsPerson(client_p) || IsExemptResv(client_p)) | |
700 | continue; | |
701 | ||
702 | /* Skip users that already have UID nicks. */ | |
703 | if(IsDigit(client_p->name[0])) | |
704 | continue; | |
705 | ||
706 | if(match_esc(mask, client_p->name)) | |
707 | { | |
708 | nick = client_p->id; | |
709 | ||
710 | /* Tell opers. */ | |
711 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
712 | "RESV forced nick change for %s!%s@%s to %s; nick matched [%s] (%s)", | |
713 | client_p->name, client_p->username, client_p->host, nick, mask, reason); | |
714 | ||
715 | sendto_realops_snomask(SNO_NCHANGE, L_ALL, | |
716 | "Nick change: From %s to %s [%s@%s]", | |
717 | client_p->name, nick, client_p->username, client_p->host); | |
718 | ||
719 | /* Tell the user. */ | |
720 | if (temp_time > 0) | |
721 | { | |
722 | sendto_one_notice(client_p, | |
723 | ":*** Nick %s is temporarily unavailable on this server.", | |
724 | client_p->name); | |
725 | } | |
726 | else | |
727 | { | |
728 | sendto_one_notice(client_p, | |
729 | ":*** Nick %s is no longer available on this server.", | |
730 | client_p->name); | |
731 | } | |
732 | ||
733 | /* Do all of the nick-changing gymnastics. */ | |
734 | client_p->tsinfo = rb_current_time(); | |
735 | whowas_add_history(client_p, 1); | |
736 | ||
737 | monitor_signoff(client_p); | |
738 | ||
739 | invalidate_bancache_user(client_p); | |
740 | ||
741 | sendto_common_channels_local(client_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s", | |
742 | client_p->name, client_p->username, client_p->host, nick); | |
743 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
744 | use_id(client_p), nick, (long) client_p->tsinfo); | |
745 | ||
746 | del_from_client_hash(client_p->name, client_p); | |
747 | rb_strlcpy(client_p->name, nick, sizeof(client_p->name)); | |
748 | add_to_client_hash(nick, client_p); | |
749 | ||
750 | monitor_signon(client_p); | |
751 | ||
752 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) | |
753 | { | |
754 | target_p = ptr->data; | |
755 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); | |
756 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
757 | } | |
758 | ||
759 | snprintf(note, sizeof(note), "Nick: %s", nick); | |
760 | rb_note(client_p->localClient->F, note); | |
761 | } | |
762 | } | |
763 | } | |
764 | ||
765 | /* | |
766 | * update_client_exit_stats | |
767 | * | |
768 | * input - pointer to client | |
769 | * output - NONE | |
770 | * side effects - | |
771 | */ | |
772 | static void | |
773 | update_client_exit_stats(struct Client *client_p) | |
774 | { | |
775 | if(IsServer(client_p)) | |
776 | { | |
777 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
778 | "Server %s split from %s", | |
779 | client_p->name, client_p->servptr->name); | |
780 | if(HasSentEob(client_p)) | |
781 | eob_count--; | |
782 | } | |
783 | else if(IsClient(client_p)) | |
784 | { | |
785 | --Count.total; | |
786 | if(IsOper(client_p)) | |
787 | --Count.oper; | |
788 | if(IsInvisible(client_p)) | |
789 | --Count.invisi; | |
790 | } | |
791 | ||
792 | if(splitchecking && !splitmode) | |
793 | check_splitmode(NULL); | |
794 | } | |
795 | ||
796 | /* | |
797 | * release_client_state | |
798 | * | |
799 | * input - pointer to client to release | |
800 | * output - NONE | |
801 | * side effects - | |
802 | */ | |
803 | static void | |
804 | release_client_state(struct Client *client_p) | |
805 | { | |
806 | if(client_p->user != NULL) | |
807 | { | |
808 | free_user(client_p->user, client_p); /* try this here */ | |
809 | } | |
810 | if(client_p->serv) | |
811 | { | |
812 | if(client_p->serv->user != NULL) | |
813 | free_user(client_p->serv->user, client_p); | |
814 | if(client_p->serv->fullcaps) | |
815 | rb_free(client_p->serv->fullcaps); | |
816 | rb_free(client_p->serv); | |
817 | } | |
818 | } | |
819 | ||
820 | /* | |
821 | * remove_client_from_list | |
822 | * inputs - point to client to remove | |
823 | * output - NONE | |
824 | * side effects - taken the code from ExitOneClient() for this | |
825 | * and placed it here. - avalon | |
826 | */ | |
827 | static void | |
828 | remove_client_from_list(struct Client *client_p) | |
829 | { | |
830 | s_assert(NULL != client_p); | |
831 | ||
832 | if(client_p == NULL) | |
833 | return; | |
834 | ||
835 | /* A client made with make_client() | |
836 | * is on the unknown_list until removed. | |
837 | * If it =does= happen to exit before its removed from that list | |
838 | * and its =not= on the global_client_list, it will core here. | |
839 | * short circuit that case now -db | |
840 | */ | |
841 | if(client_p->node.prev == NULL && client_p->node.next == NULL) | |
842 | return; | |
843 | ||
844 | rb_dlinkDelete(&client_p->node, &global_client_list); | |
845 | ||
846 | update_client_exit_stats(client_p); | |
847 | } | |
848 | ||
849 | ||
850 | /* clean_nick() | |
851 | * | |
852 | * input - nickname to check, flag for nick from local client | |
853 | * output - 0 if erroneous, else 1 | |
854 | * side effects - | |
855 | */ | |
856 | int | |
857 | clean_nick(const char *nick, int loc_client) | |
858 | { | |
859 | int len = 0; | |
860 | ||
861 | /* nicks cant start with a digit or -, and must have a length */ | |
862 | if(*nick == '-' || *nick == '\0') | |
863 | return 0; | |
864 | ||
865 | if(loc_client && IsDigit(*nick)) | |
866 | return 0; | |
867 | ||
868 | for(; *nick; nick++) | |
869 | { | |
870 | len++; | |
871 | if(!IsNickChar(*nick)) | |
872 | return 0; | |
873 | } | |
874 | ||
875 | /* nicklen is +1 */ | |
876 | if(len >= NICKLEN && (unsigned int)len >= ConfigFileEntry.nicklen) | |
877 | return 0; | |
878 | ||
879 | return 1; | |
880 | } | |
881 | ||
882 | /* | |
883 | * find_person - find person by (nick)name. | |
884 | * inputs - pointer to name | |
885 | * output - return client pointer | |
886 | * side effects - | |
887 | */ | |
888 | struct Client * | |
889 | find_person(const char *name) | |
890 | { | |
891 | struct Client *c2ptr; | |
892 | ||
893 | c2ptr = find_client(name); | |
894 | ||
895 | if(c2ptr && IsPerson(c2ptr)) | |
896 | return (c2ptr); | |
897 | return (NULL); | |
898 | } | |
899 | ||
900 | struct Client * | |
901 | find_named_person(const char *name) | |
902 | { | |
903 | struct Client *c2ptr; | |
904 | ||
905 | c2ptr = find_named_client(name); | |
906 | ||
907 | if(c2ptr && IsPerson(c2ptr)) | |
908 | return (c2ptr); | |
909 | return (NULL); | |
910 | } | |
911 | ||
912 | ||
913 | /* | |
914 | * find_chasing - find the client structure for a nick name (user) | |
915 | * using history mechanism if necessary. If the client is not found, | |
916 | * an error message (NO SUCH NICK) is generated. If the client was found | |
917 | * through the history, chasing will be 1 and otherwise 0. | |
918 | */ | |
919 | struct Client * | |
920 | find_chasing(struct Client *source_p, const char *user, int *chasing) | |
921 | { | |
922 | struct Client *who; | |
923 | ||
924 | if(MyClient(source_p)) | |
925 | who = find_named_person(user); | |
926 | else | |
927 | who = find_person(user); | |
928 | ||
929 | if(chasing) | |
930 | *chasing = 0; | |
931 | ||
932 | if(who || IsDigit(*user)) | |
933 | return who; | |
934 | ||
935 | if(!(who = whowas_get_history(user, (long) KILLCHASETIMELIMIT))) | |
936 | { | |
937 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
938 | form_str(ERR_NOSUCHNICK), user); | |
939 | return (NULL); | |
940 | } | |
941 | if(chasing) | |
942 | *chasing = 1; | |
943 | return who; | |
944 | } | |
945 | ||
946 | /* | |
947 | * get_client_name - Return the name of the client | |
948 | * for various tracking and | |
949 | * admin purposes. The main purpose of this function is to | |
950 | * return the "socket host" name of the client, if that | |
951 | * differs from the advertised name (other than case). | |
952 | * But, this can be used to any client structure. | |
953 | * | |
954 | * NOTE 1: | |
955 | * Watch out the allocation of "nbuf", if either source_p->name | |
956 | * or source_p->sockhost gets changed into pointers instead of | |
957 | * directly allocated within the structure... | |
958 | * | |
959 | * NOTE 2: | |
960 | * Function return either a pointer to the structure (source_p) or | |
961 | * to internal buffer (nbuf). *NEVER* use the returned pointer | |
962 | * to modify what it points!!! | |
963 | */ | |
964 | ||
965 | const char * | |
966 | get_client_name(struct Client *client, int showip) | |
967 | { | |
968 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
969 | ||
970 | s_assert(NULL != client); | |
971 | if(client == NULL) | |
972 | return NULL; | |
973 | ||
974 | if(MyConnect(client)) | |
975 | { | |
976 | if(!irccmp(client->name, client->host)) | |
977 | return client->name; | |
978 | ||
979 | if(ConfigFileEntry.hide_spoof_ips && | |
980 | showip == SHOW_IP && IsIPSpoof(client)) | |
981 | showip = MASK_IP; | |
982 | if(IsAnyServer(client)) | |
983 | showip = MASK_IP; | |
984 | ||
985 | /* And finally, let's get the host information, ip or name */ | |
986 | switch (showip) | |
987 | { | |
988 | case SHOW_IP: | |
989 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
990 | client->name, client->username, | |
991 | client->sockhost); | |
992 | break; | |
993 | case MASK_IP: | |
994 | snprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
995 | client->name, client->username); | |
996 | break; | |
997 | default: | |
998 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
999 | client->name, client->username, client->host); | |
1000 | } | |
1001 | return nbuf; | |
1002 | } | |
1003 | ||
1004 | /* As pointed out by Adel Mezibra | |
1005 | * Neph|l|m@EFnet. Was missing a return here. | |
1006 | */ | |
1007 | return client->name; | |
1008 | } | |
1009 | ||
1010 | /* log_client_name() | |
1011 | * | |
1012 | * This version is the same as get_client_name, but doesnt contain the | |
1013 | * code that will hide IPs always. This should be used for logfiles. | |
1014 | */ | |
1015 | const char * | |
1016 | log_client_name(struct Client *target_p, int showip) | |
1017 | { | |
1018 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
1019 | ||
1020 | if(target_p == NULL) | |
1021 | return NULL; | |
1022 | ||
1023 | if(MyConnect(target_p)) | |
1024 | { | |
1025 | if(irccmp(target_p->name, target_p->host) == 0) | |
1026 | return target_p->name; | |
1027 | ||
1028 | switch (showip) | |
1029 | { | |
1030 | case SHOW_IP: | |
1031 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, | |
1032 | target_p->username, target_p->sockhost); | |
1033 | break; | |
1034 | ||
1035 | default: | |
1036 | snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, | |
1037 | target_p->username, target_p->host); | |
1038 | } | |
1039 | ||
1040 | return nbuf; | |
1041 | } | |
1042 | ||
1043 | return target_p->name; | |
1044 | } | |
1045 | ||
1046 | /* is_remote_connect - Returns whether a server was /connect'ed by a remote | |
1047 | * oper (send notices netwide) */ | |
1048 | int | |
1049 | is_remote_connect(struct Client *client_p) | |
1050 | { | |
1051 | struct Client *oper; | |
1052 | ||
1053 | if (client_p->serv == NULL) | |
1054 | return FALSE; | |
1055 | oper = find_named_person(client_p->serv->by); | |
1056 | return oper != NULL && IsOper(oper) && !MyConnect(oper); | |
1057 | } | |
1058 | ||
1059 | static void | |
1060 | free_exited_clients(void *unused) | |
1061 | { | |
1062 | rb_dlink_node *ptr, *next; | |
1063 | struct Client *target_p; | |
1064 | ||
1065 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_list.head) | |
1066 | { | |
1067 | target_p = ptr->data; | |
1068 | ||
1069 | #ifdef DEBUG_EXITED_CLIENTS | |
1070 | { | |
1071 | struct abort_client *abt; | |
1072 | rb_dlink_node *aptr; | |
1073 | int found = 0; | |
1074 | ||
1075 | RB_DLINK_FOREACH(aptr, abort_list.head) | |
1076 | { | |
1077 | abt = aptr->data; | |
1078 | if(abt->client == target_p) | |
1079 | { | |
1080 | s_assert(0); | |
1081 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1082 | "On abort_list: %s stat: %u flags: %llu handler: %c", | |
1083 | target_p->name, (unsigned int) target_p->status, | |
1084 | (unsigned long long)target_p->flags, target_p->handler); | |
1085 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1086 | "Please report this to the charybdis developers!"); | |
1087 | found++; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | if(found) | |
1092 | { | |
1093 | rb_dlinkDestroy(ptr, &dead_list); | |
1094 | continue; | |
1095 | } | |
1096 | } | |
1097 | #endif | |
1098 | ||
1099 | if(ptr->data == NULL) | |
1100 | { | |
1101 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1102 | "Warning: null client on dead_list!"); | |
1103 | rb_dlinkDestroy(ptr, &dead_list); | |
1104 | continue; | |
1105 | } | |
1106 | release_client_state(target_p); | |
1107 | free_client(target_p); | |
1108 | rb_dlinkDestroy(ptr, &dead_list); | |
1109 | } | |
1110 | ||
1111 | #ifdef DEBUG_EXITED_CLIENTS | |
1112 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_remote_list.head) | |
1113 | { | |
1114 | target_p = ptr->data; | |
1115 | ||
1116 | if(ptr->data == NULL) | |
1117 | { | |
1118 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1119 | "Warning: null client on dead_list!"); | |
1120 | rb_dlinkDestroy(ptr, &dead_list); | |
1121 | continue; | |
1122 | } | |
1123 | release_client_state(target_p); | |
1124 | free_client(target_p); | |
1125 | rb_dlinkDestroy(ptr, &dead_remote_list); | |
1126 | } | |
1127 | #endif | |
1128 | ||
1129 | } | |
1130 | ||
1131 | /* | |
1132 | ** Remove all clients that depend on source_p; assumes all (S)QUITs have | |
1133 | ** already been sent. we make sure to exit a server's dependent clients | |
1134 | ** and servers before the server itself; exit_one_client takes care of | |
1135 | ** actually removing things off llists. tweaked from +CSr31 -orabidoo | |
1136 | */ | |
1137 | /* | |
1138 | * added sanity test code.... source_p->serv might be NULL... | |
1139 | */ | |
1140 | static void | |
1141 | recurse_remove_clients(struct Client *source_p, const char *comment) | |
1142 | { | |
1143 | struct Client *target_p; | |
1144 | rb_dlink_node *ptr, *ptr_next; | |
1145 | ||
1146 | if(IsMe(source_p)) | |
1147 | return; | |
1148 | ||
1149 | if(source_p->serv == NULL) /* oooops. uh this is actually a major bug */ | |
1150 | return; | |
1151 | ||
1152 | /* this is very ugly, but it saves cpu :P */ | |
1153 | if(ConfigFileEntry.nick_delay > 0) | |
1154 | { | |
1155 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1156 | { | |
1157 | target_p = ptr->data; | |
1158 | target_p->flags |= FLAGS_KILLED; | |
1159 | add_nd_entry(target_p->name); | |
1160 | ||
1161 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1162 | exit_remote_client(NULL, target_p, &me, comment); | |
1163 | } | |
1164 | } | |
1165 | else | |
1166 | { | |
1167 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1168 | { | |
1169 | target_p = ptr->data; | |
1170 | target_p->flags |= FLAGS_KILLED; | |
1171 | ||
1172 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1173 | exit_remote_client(NULL, target_p, &me, comment); | |
1174 | } | |
1175 | } | |
1176 | ||
1177 | RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) | |
1178 | { | |
1179 | target_p = ptr->data; | |
1180 | recurse_remove_clients(target_p, comment); | |
1181 | qs_server(NULL, target_p, &me, comment); | |
1182 | } | |
1183 | } | |
1184 | ||
1185 | /* | |
1186 | ** Remove *everything* that depends on source_p, from all lists, and sending | |
1187 | ** all necessary SQUITs. source_p itself is still on the lists, | |
1188 | ** and its SQUITs have been sent except for the upstream one -orabidoo | |
1189 | */ | |
1190 | static void | |
1191 | remove_dependents(struct Client *client_p, | |
1192 | struct Client *source_p, | |
1193 | struct Client *from, const char *comment, const char *comment1) | |
1194 | { | |
1195 | struct Client *to; | |
1196 | rb_dlink_node *ptr, *next; | |
1197 | ||
1198 | RB_DLINK_FOREACH_SAFE(ptr, next, serv_list.head) | |
1199 | { | |
1200 | to = ptr->data; | |
1201 | ||
1202 | if(IsMe(to) || to == source_p->from || to == client_p) | |
1203 | continue; | |
1204 | ||
1205 | sendto_one(to, "SQUIT %s :%s", get_id(source_p, to), comment); | |
1206 | } | |
1207 | ||
1208 | recurse_remove_clients(source_p, comment1); | |
1209 | } | |
1210 | ||
1211 | void | |
1212 | exit_aborted_clients(void *unused) | |
1213 | { | |
1214 | struct abort_client *abt; | |
1215 | rb_dlink_node *ptr, *next; | |
1216 | RB_DLINK_FOREACH_SAFE(ptr, next, abort_list.head) | |
1217 | { | |
1218 | abt = ptr->data; | |
1219 | ||
1220 | #ifdef DEBUG_EXITED_CLIENTS | |
1221 | { | |
1222 | if(rb_dlinkFind(abt->client, &dead_list)) | |
1223 | { | |
1224 | s_assert(0); | |
1225 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1226 | "On dead_list: %s stat: %u flags: %llu handler: %c", | |
1227 | abt->client->name, (unsigned int) abt->client->status, | |
1228 | (unsigned long long)abt->client->flags, abt->client->handler); | |
1229 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1230 | "Please report this to the charybdis developers!"); | |
1231 | continue; | |
1232 | } | |
1233 | } | |
1234 | #endif | |
1235 | ||
1236 | s_assert(*((unsigned long*)abt->client) != 0xdeadbeef); /* This is lame but its a debug thing */ | |
1237 | rb_dlinkDelete(ptr, &abort_list); | |
1238 | ||
1239 | if(IsAnyServer(abt->client)) | |
1240 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1241 | "Closing link to %s: %s", | |
1242 | abt->client->name, abt->notice); | |
1243 | ||
1244 | /* its no longer on abort list - we *must* remove | |
1245 | * FLAGS_CLOSING otherwise exit_client() will not run --fl | |
1246 | */ | |
1247 | abt->client->flags &= ~FLAGS_CLOSING; | |
1248 | exit_client(abt->client, abt->client, &me, abt->notice); | |
1249 | rb_free(abt); | |
1250 | } | |
1251 | } | |
1252 | ||
1253 | ||
1254 | /* | |
1255 | * dead_link - Adds client to a list of clients that need an exit_client() | |
1256 | */ | |
1257 | void | |
1258 | dead_link(struct Client *client_p, int sendqex) | |
1259 | { | |
1260 | struct abort_client *abt; | |
1261 | ||
1262 | s_assert(!IsMe(client_p)); | |
1263 | if(IsDead(client_p) || IsClosing(client_p) || IsMe(client_p)) | |
1264 | return; | |
1265 | ||
1266 | abt = (struct abort_client *) rb_malloc(sizeof(struct abort_client)); | |
1267 | ||
1268 | if(sendqex) | |
1269 | rb_strlcpy(abt->notice, "Max SendQ exceeded", sizeof(abt->notice)); | |
1270 | else | |
1271 | snprintf(abt->notice, sizeof(abt->notice), "Write error: %s", strerror(errno)); | |
1272 | ||
1273 | abt->client = client_p; | |
1274 | SetIOError(client_p); | |
1275 | SetDead(client_p); | |
1276 | SetClosing(client_p); | |
1277 | rb_dlinkAdd(abt, &abt->node, &abort_list); | |
1278 | } | |
1279 | ||
1280 | ||
1281 | /* This does the remove of the user from channels..local or remote */ | |
1282 | static inline void | |
1283 | exit_generic_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1284 | const char *comment) | |
1285 | { | |
1286 | rb_dlink_node *ptr, *next_ptr; | |
1287 | ||
1288 | if(IsOper(source_p)) | |
1289 | rb_dlinkFindDestroy(source_p, &oper_list); | |
1290 | ||
1291 | sendto_common_channels_local(source_p, NOCAPS, NOCAPS, ":%s!%s@%s QUIT :%s", | |
1292 | source_p->name, | |
1293 | source_p->username, source_p->host, comment); | |
1294 | ||
1295 | remove_user_from_channels(source_p); | |
1296 | ||
1297 | /* Should not be in any channels now */ | |
1298 | s_assert(source_p->user->channel.head == NULL); | |
1299 | ||
1300 | /* Clean up invitefield */ | |
1301 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->user->invited.head) | |
1302 | { | |
1303 | del_invite(ptr->data, source_p); | |
1304 | } | |
1305 | ||
1306 | /* Clean up allow lists */ | |
1307 | del_all_accepts(source_p); | |
1308 | ||
1309 | whowas_add_history(source_p, 0); | |
1310 | whowas_off_history(source_p); | |
1311 | ||
1312 | monitor_signoff(source_p); | |
1313 | ||
1314 | if(has_id(source_p)) | |
1315 | del_from_id_hash(source_p->id, source_p); | |
1316 | ||
1317 | del_from_hostname_hash(source_p->orighost, source_p); | |
1318 | del_from_client_hash(source_p->name, source_p); | |
1319 | remove_client_from_list(source_p); | |
1320 | } | |
1321 | ||
1322 | /* | |
1323 | * Assumes IsPerson(source_p) && !MyConnect(source_p) | |
1324 | */ | |
1325 | ||
1326 | static int | |
1327 | exit_remote_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1328 | const char *comment) | |
1329 | { | |
1330 | exit_generic_client(client_p, source_p, from, comment); | |
1331 | ||
1332 | if(source_p->servptr && source_p->servptr->serv) | |
1333 | { | |
1334 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users); | |
1335 | } | |
1336 | ||
1337 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1338 | { | |
1339 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1340 | ":%s QUIT :%s", use_id(source_p), comment); | |
1341 | } | |
1342 | ||
1343 | SetDead(source_p); | |
1344 | #ifdef DEBUG_EXITED_CLIENTS | |
1345 | rb_dlinkAddAlloc(source_p, &dead_remote_list); | |
1346 | #else | |
1347 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1348 | #endif | |
1349 | return(CLIENT_EXITED); | |
1350 | } | |
1351 | ||
1352 | /* | |
1353 | * This assumes IsUnknown(source_p) == true and MyConnect(source_p) == true | |
1354 | */ | |
1355 | ||
1356 | static int | |
1357 | exit_unknown_client(struct Client *client_p, /* The local client originating the | |
1358 | * exit or NULL, if this exit is | |
1359 | * generated by this server for | |
1360 | * internal reasons. | |
1361 | * This will not get any of the | |
1362 | * generated messages. */ | |
1363 | struct Client *source_p, /* Client exiting */ | |
1364 | struct Client *from, /* Client firing off this Exit, | |
1365 | * never NULL! */ | |
1366 | const char *comment) | |
1367 | { | |
1368 | authd_abort_client(source_p); | |
1369 | rb_dlinkDelete(&source_p->localClient->tnode, &unknown_list); | |
1370 | ||
1371 | if(!IsIOError(source_p)) | |
1372 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", | |
1373 | source_p->user != NULL ? source_p->host : "127.0.0.1", | |
1374 | comment); | |
1375 | ||
1376 | close_connection(source_p); | |
1377 | ||
1378 | if(has_id(source_p)) | |
1379 | del_from_id_hash(source_p->id, source_p); | |
1380 | ||
1381 | del_from_hostname_hash(source_p->host, source_p); | |
1382 | del_from_client_hash(source_p->name, source_p); | |
1383 | remove_client_from_list(source_p); | |
1384 | SetDead(source_p); | |
1385 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1386 | ||
1387 | /* Note that we don't need to add unknowns to the dead_list */ | |
1388 | return(CLIENT_EXITED); | |
1389 | } | |
1390 | ||
1391 | static int | |
1392 | exit_remote_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1393 | const char *comment) | |
1394 | { | |
1395 | static char comment1[(HOSTLEN*2)+2]; | |
1396 | static char newcomment[BUFSIZE]; | |
1397 | struct Client *target_p; | |
1398 | ||
1399 | if(ConfigServerHide.flatten_links) | |
1400 | strcpy(comment1, "*.net *.split"); | |
1401 | else | |
1402 | { | |
1403 | strcpy(comment1, source_p->servptr->name); | |
1404 | strcat(comment1, " "); | |
1405 | strcat(comment1, source_p->name); | |
1406 | } | |
1407 | if (IsPerson(from)) | |
1408 | snprintf(newcomment, sizeof(newcomment), "by %s: %s", | |
1409 | from->name, comment); | |
1410 | ||
1411 | if(source_p->serv != NULL) | |
1412 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
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 | rb_dlinkFindDestroy(source_p, &global_serv_list); | |
1420 | target_p = source_p->from; | |
1421 | ||
1422 | if(target_p != NULL && IsServer(target_p) && target_p != client_p && | |
1423 | !IsMe(target_p) && (source_p->flags & FLAGS_KILLED) == 0) | |
1424 | { | |
1425 | sendto_one(target_p, ":%s SQUIT %s :%s", | |
1426 | get_id(from, target_p), get_id(source_p, target_p), | |
1427 | comment); | |
1428 | } | |
1429 | ||
1430 | if(has_id(source_p)) | |
1431 | del_from_id_hash(source_p->id, source_p); | |
1432 | ||
1433 | del_from_client_hash(source_p->name, source_p); | |
1434 | remove_client_from_list(source_p); | |
1435 | scache_split(source_p->serv->nameinfo); | |
1436 | ||
1437 | SetDead(source_p); | |
1438 | #ifdef DEBUG_EXITED_CLIENTS | |
1439 | rb_dlinkAddAlloc(source_p, &dead_remote_list); | |
1440 | #else | |
1441 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1442 | #endif | |
1443 | return 0; | |
1444 | } | |
1445 | ||
1446 | static int | |
1447 | qs_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1448 | const char *comment) | |
1449 | { | |
1450 | if(source_p->servptr && source_p->servptr->serv) | |
1451 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1452 | else | |
1453 | s_assert(0); | |
1454 | ||
1455 | rb_dlinkFindDestroy(source_p, &global_serv_list); | |
1456 | ||
1457 | if(has_id(source_p)) | |
1458 | del_from_id_hash(source_p->id, source_p); | |
1459 | ||
1460 | del_from_client_hash(source_p->name, source_p); | |
1461 | remove_client_from_list(source_p); | |
1462 | scache_split(source_p->serv->nameinfo); | |
1463 | ||
1464 | SetDead(source_p); | |
1465 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1466 | return 0; | |
1467 | } | |
1468 | ||
1469 | static int | |
1470 | exit_local_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1471 | const char *comment) | |
1472 | { | |
1473 | static char comment1[(HOSTLEN*2)+2]; | |
1474 | static char newcomment[BUFSIZE]; | |
1475 | unsigned int sendk, recvk; | |
1476 | ||
1477 | rb_dlinkDelete(&source_p->localClient->tnode, &serv_list); | |
1478 | rb_dlinkFindDestroy(source_p, &global_serv_list); | |
1479 | ||
1480 | sendk = source_p->localClient->sendK; | |
1481 | recvk = source_p->localClient->receiveK; | |
1482 | ||
1483 | /* Always show source here, so the server notices show | |
1484 | * which side initiated the split -- jilles | |
1485 | */ | |
1486 | snprintf(newcomment, sizeof(newcomment), "by %s: %s", | |
1487 | from == source_p ? me.name : from->name, comment); | |
1488 | if (!IsIOError(source_p)) | |
1489 | sendto_one(source_p, "SQUIT %s :%s", use_id(source_p), | |
1490 | newcomment); | |
1491 | if(client_p != NULL && source_p != client_p && !IsIOError(source_p)) | |
1492 | { | |
1493 | sendto_one(source_p, "ERROR :Closing Link: 127.0.0.1 %s (%s)", | |
1494 | source_p->name, comment); | |
1495 | } | |
1496 | ||
1497 | if(source_p->servptr && source_p->servptr->serv) | |
1498 | rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1499 | else | |
1500 | s_assert(0); | |
1501 | ||
1502 | ||
1503 | close_connection(source_p); | |
1504 | ||
1505 | if(ConfigServerHide.flatten_links) | |
1506 | strcpy(comment1, "*.net *.split"); | |
1507 | else | |
1508 | { | |
1509 | strcpy(comment1, source_p->servptr->name); | |
1510 | strcat(comment1, " "); | |
1511 | strcat(comment1, source_p->name); | |
1512 | } | |
1513 | ||
1514 | if(source_p->serv != NULL) | |
1515 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1516 | ||
1517 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s was connected" | |
1518 | " for %ld seconds. %d/%d sendK/recvK.", | |
1519 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); | |
1520 | ||
1521 | ilog(L_SERVER, "%s was connected for %ld seconds. %d/%d sendK/recvK.", | |
1522 | source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk); | |
1523 | ||
1524 | if(has_id(source_p)) | |
1525 | del_from_id_hash(source_p->id, source_p); | |
1526 | ||
1527 | del_from_client_hash(source_p->name, source_p); | |
1528 | remove_client_from_list(source_p); | |
1529 | scache_split(source_p->serv->nameinfo); | |
1530 | ||
1531 | SetDead(source_p); | |
1532 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1533 | return 0; | |
1534 | } | |
1535 | ||
1536 | ||
1537 | /* | |
1538 | * This assumes IsPerson(source_p) == true && MyConnect(source_p) == true | |
1539 | */ | |
1540 | ||
1541 | static int | |
1542 | exit_local_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1543 | const char *comment) | |
1544 | { | |
1545 | unsigned long on_for; | |
1546 | char tbuf[26]; | |
1547 | ||
1548 | exit_generic_client(client_p, source_p, from, comment); | |
1549 | clear_monitor(source_p); | |
1550 | ||
1551 | s_assert(IsPerson(source_p)); | |
1552 | rb_dlinkDelete(&source_p->localClient->tnode, &lclient_list); | |
1553 | rb_dlinkDelete(&source_p->lnode, &me.serv->users); | |
1554 | ||
1555 | if(IsOper(source_p)) | |
1556 | rb_dlinkFindDestroy(source_p, &local_oper_list); | |
1557 | ||
1558 | sendto_realops_snomask(SNO_CCONN, L_ALL, | |
1559 | "Client exiting: %s (%s@%s) [%s] [%s]", | |
1560 | source_p->name, | |
1561 | source_p->username, source_p->host, comment, | |
1562 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255"); | |
1563 | ||
1564 | sendto_realops_snomask(SNO_CCONNEXT, L_ALL, | |
1565 | "CLIEXIT %s %s %s %s 0 %s", | |
1566 | source_p->name, source_p->username, source_p->host, | |
1567 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255", | |
1568 | comment); | |
1569 | ||
1570 | on_for = rb_current_time() - source_p->localClient->firsttime; | |
1571 | ||
1572 | ilog(L_USER, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d", | |
1573 | rb_ctime(rb_current_time(), tbuf, sizeof(tbuf)), on_for / 3600, | |
1574 | (on_for % 3600) / 60, on_for % 60, | |
1575 | source_p->name, source_p->username, source_p->host, | |
1576 | source_p->sockhost, | |
1577 | source_p->localClient->sendK, source_p->localClient->receiveK); | |
1578 | ||
1579 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", source_p->host, comment); | |
1580 | close_connection(source_p); | |
1581 | ||
1582 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1583 | { | |
1584 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1585 | ":%s QUIT :%s", use_id(source_p), comment); | |
1586 | } | |
1587 | ||
1588 | SetDead(source_p); | |
1589 | rb_dlinkAddAlloc(source_p, &dead_list); | |
1590 | return(CLIENT_EXITED); | |
1591 | } | |
1592 | ||
1593 | ||
1594 | /* | |
1595 | ** exit_client - This is old "m_bye". Name changed, because this is not a | |
1596 | ** protocol function, but a general server utility function. | |
1597 | ** | |
1598 | ** This function exits a client of *any* type (user, server, etc) | |
1599 | ** from this server. Also, this generates all necessary prototol | |
1600 | ** messages that this exit may cause. | |
1601 | ** | |
1602 | ** 1) If the client is a local client, then this implicitly | |
1603 | ** exits all other clients depending on this connection (e.g. | |
1604 | ** remote clients having 'from'-field that points to this. | |
1605 | ** | |
1606 | ** 2) If the client is a remote client, then only this is exited. | |
1607 | ** | |
1608 | ** For convenience, this function returns a suitable value for | |
1609 | ** m_function return value: | |
1610 | ** | |
1611 | ** CLIENT_EXITED if (client_p == source_p) | |
1612 | ** 0 if (client_p != source_p) | |
1613 | */ | |
1614 | int | |
1615 | exit_client(struct Client *client_p, /* The local client originating the | |
1616 | * exit or NULL, if this exit is | |
1617 | * generated by this server for | |
1618 | * internal reasons. | |
1619 | * This will not get any of the | |
1620 | * generated messages. */ | |
1621 | struct Client *source_p, /* Client exiting */ | |
1622 | struct Client *from, /* Client firing off this Exit, | |
1623 | * never NULL! */ | |
1624 | const char *comment /* Reason for the exit */ | |
1625 | ) | |
1626 | { | |
1627 | hook_data_client_exit hdata; | |
1628 | if(IsClosing(source_p)) | |
1629 | return -1; | |
1630 | ||
1631 | /* note, this HAS to be here, when we exit a client we attempt to | |
1632 | * send them data, if this generates a write error we must *not* add | |
1633 | * them to the abort list --fl | |
1634 | */ | |
1635 | SetClosing(source_p); | |
1636 | ||
1637 | hdata.local_link = client_p; | |
1638 | hdata.target = source_p; | |
1639 | hdata.from = from; | |
1640 | hdata.comment = comment; | |
1641 | call_hook(h_client_exit, &hdata); | |
1642 | ||
1643 | if(MyConnect(source_p)) | |
1644 | { | |
1645 | /* Local clients of various types */ | |
1646 | if(IsPerson(source_p)) | |
1647 | return exit_local_client(client_p, source_p, from, comment); | |
1648 | else if(IsServer(source_p)) | |
1649 | return exit_local_server(client_p, source_p, from, comment); | |
1650 | /* IsUnknown || IsConnecting || IsHandShake */ | |
1651 | else if(!IsReject(source_p)) | |
1652 | return exit_unknown_client(client_p, source_p, from, comment); | |
1653 | } | |
1654 | else | |
1655 | { | |
1656 | /* Remotes */ | |
1657 | if(IsPerson(source_p)) | |
1658 | return exit_remote_client(client_p, source_p, from, comment); | |
1659 | else if(IsServer(source_p)) | |
1660 | return exit_remote_server(client_p, source_p, from, comment); | |
1661 | } | |
1662 | ||
1663 | return -1; | |
1664 | } | |
1665 | ||
1666 | /* | |
1667 | * Count up local client memory | |
1668 | */ | |
1669 | ||
1670 | /* XXX one common Client list now */ | |
1671 | void | |
1672 | count_local_client_memory(size_t * count, size_t * local_client_memory_used) | |
1673 | { | |
1674 | size_t lusage; | |
1675 | rb_bh_usage(lclient_heap, count, NULL, &lusage, NULL); | |
1676 | *local_client_memory_used = lusage + (*count * (sizeof(void *) + sizeof(struct Client))); | |
1677 | } | |
1678 | ||
1679 | /* | |
1680 | * Count up remote client memory | |
1681 | */ | |
1682 | void | |
1683 | count_remote_client_memory(size_t * count, size_t * remote_client_memory_used) | |
1684 | { | |
1685 | size_t lcount, rcount; | |
1686 | rb_bh_usage(lclient_heap, &lcount, NULL, NULL, NULL); | |
1687 | rb_bh_usage(client_heap, &rcount, NULL, NULL, NULL); | |
1688 | *count = rcount - lcount; | |
1689 | *remote_client_memory_used = *count * (sizeof(void *) + sizeof(struct Client)); | |
1690 | } | |
1691 | ||
1692 | ||
1693 | /* | |
1694 | * accept processing, this adds a form of "caller ID" to ircd | |
1695 | * | |
1696 | * If a client puts themselves into "caller ID only" mode, | |
1697 | * only clients that match a client pointer they have put on | |
1698 | * the accept list will be allowed to message them. | |
1699 | * | |
1700 | * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ] | |
1701 | * | |
1702 | * [target.allow_list] -> [ source1 ] -> [source2 ] | |
1703 | * | |
1704 | * i.e. a target will have a link list of source pointers it will allow | |
1705 | * each source client then has a back pointer pointing back | |
1706 | * to the client that has it on its accept list. | |
1707 | * This allows for exit_one_client to remove these now bogus entries | |
1708 | * from any client having an accept on them. | |
1709 | */ | |
1710 | /* | |
1711 | * del_all_accepts | |
1712 | * | |
1713 | * inputs - pointer to exiting client | |
1714 | * output - NONE | |
1715 | * side effects - Walk through given clients allow_list and on_allow_list | |
1716 | * remove all references to this client | |
1717 | */ | |
1718 | void | |
1719 | del_all_accepts(struct Client *client_p) | |
1720 | { | |
1721 | rb_dlink_node *ptr; | |
1722 | rb_dlink_node *next_ptr; | |
1723 | struct Client *target_p; | |
1724 | ||
1725 | if(MyClient(client_p) && client_p->localClient->allow_list.head) | |
1726 | { | |
1727 | /* clear this clients accept list, and remove them from | |
1728 | * everyones on_accept_list | |
1729 | */ | |
1730 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->allow_list.head) | |
1731 | { | |
1732 | target_p = ptr->data; | |
1733 | rb_dlinkFindDestroy(client_p, &target_p->on_allow_list); | |
1734 | rb_dlinkDestroy(ptr, &client_p->localClient->allow_list); | |
1735 | } | |
1736 | } | |
1737 | ||
1738 | /* remove this client from everyones accept list */ | |
1739 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) | |
1740 | { | |
1741 | target_p = ptr->data; | |
1742 | rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list); | |
1743 | rb_dlinkDestroy(ptr, &client_p->on_allow_list); | |
1744 | } | |
1745 | } | |
1746 | ||
1747 | /* | |
1748 | * show_ip() - asks if the true IP should be shown when source is | |
1749 | * asking for info about target | |
1750 | * | |
1751 | * Inputs - source_p who is asking | |
1752 | * - target_p who do we want the info on | |
1753 | * Output - returns 1 if clear IP can be shown, otherwise 0 | |
1754 | * Side Effects - none | |
1755 | */ | |
1756 | ||
1757 | int | |
1758 | show_ip(struct Client *source_p, struct Client *target_p) | |
1759 | { | |
1760 | if(IsAnyServer(target_p)) | |
1761 | { | |
1762 | return 0; | |
1763 | } | |
1764 | else if(IsIPSpoof(target_p)) | |
1765 | { | |
1766 | /* source == NULL indicates message is being sent | |
1767 | * to local opers. | |
1768 | */ | |
1769 | if(!ConfigFileEntry.hide_spoof_ips && | |
1770 | (source_p == NULL || MyOper(source_p))) | |
1771 | return 1; | |
1772 | return 0; | |
1773 | } | |
1774 | else if(IsDynSpoof(target_p) && (source_p != NULL && !IsOper(source_p))) | |
1775 | return 0; | |
1776 | else | |
1777 | return 1; | |
1778 | } | |
1779 | ||
1780 | int | |
1781 | show_ip_conf(struct ConfItem *aconf, struct Client *source_p) | |
1782 | { | |
1783 | if(IsConfDoSpoofIp(aconf)) | |
1784 | { | |
1785 | if(!ConfigFileEntry.hide_spoof_ips && MyOper(source_p)) | |
1786 | return 1; | |
1787 | ||
1788 | return 0; | |
1789 | } | |
1790 | else | |
1791 | return 1; | |
1792 | } | |
1793 | ||
1794 | int | |
1795 | show_ip_whowas(struct Whowas *whowas, struct Client *source_p) | |
1796 | { | |
1797 | if(whowas->flags & WHOWAS_IP_SPOOFING) | |
1798 | if(ConfigFileEntry.hide_spoof_ips || !MyOper(source_p)) | |
1799 | return 0; | |
1800 | if(whowas->flags & WHOWAS_DYNSPOOF) | |
1801 | if(!IsOper(source_p)) | |
1802 | return 0; | |
1803 | return 1; | |
1804 | } | |
1805 | ||
1806 | /* | |
1807 | * make_user | |
1808 | * | |
1809 | * inputs - pointer to client struct | |
1810 | * output - pointer to struct User | |
1811 | * side effects - add's an User information block to a client | |
1812 | * if it was not previously allocated. | |
1813 | */ | |
1814 | struct User * | |
1815 | make_user(struct Client *client_p) | |
1816 | { | |
1817 | struct User *user; | |
1818 | ||
1819 | user = client_p->user; | |
1820 | if(!user) | |
1821 | { | |
1822 | user = (struct User *) rb_bh_alloc(user_heap); | |
1823 | user->refcnt = 1; | |
1824 | client_p->user = user; | |
1825 | } | |
1826 | return user; | |
1827 | } | |
1828 | ||
1829 | /* | |
1830 | * make_server | |
1831 | * | |
1832 | * inputs - pointer to client struct | |
1833 | * output - pointer to server_t | |
1834 | * side effects - add's an Server information block to a client | |
1835 | * if it was not previously allocated. | |
1836 | */ | |
1837 | struct Server * | |
1838 | make_server(struct Client *client_p) | |
1839 | { | |
1840 | struct Server *serv = client_p->serv; | |
1841 | ||
1842 | if(!serv) | |
1843 | { | |
1844 | serv = (struct Server *) rb_malloc(sizeof(struct Server)); | |
1845 | client_p->serv = serv; | |
1846 | } | |
1847 | return client_p->serv; | |
1848 | } | |
1849 | ||
1850 | /* | |
1851 | * free_user | |
1852 | * | |
1853 | * inputs - pointer to user struct | |
1854 | * - pointer to client struct | |
1855 | * output - none | |
1856 | * side effects - Decrease user reference count by one and release block, | |
1857 | * if count reaches 0 | |
1858 | */ | |
1859 | void | |
1860 | free_user(struct User *user, struct Client *client_p) | |
1861 | { | |
1862 | free_away(client_p); | |
1863 | ||
1864 | if(--user->refcnt <= 0) | |
1865 | { | |
1866 | if(user->away) | |
1867 | rb_free((char *) user->away); | |
1868 | /* | |
1869 | * sanity check | |
1870 | */ | |
1871 | if(user->refcnt < 0 || user->invited.head || user->channel.head) | |
1872 | { | |
1873 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1874 | "* %p user (%s!%s@%s) %p %p %p %lu %d *", | |
1875 | client_p, | |
1876 | client_p ? client_p-> | |
1877 | name : "<noname>", | |
1878 | client_p->username, | |
1879 | client_p->host, | |
1880 | user, | |
1881 | user->invited.head, | |
1882 | user->channel.head, | |
1883 | rb_dlink_list_length(&user->channel), | |
1884 | user->refcnt); | |
1885 | s_assert(!user->refcnt); | |
1886 | s_assert(!user->invited.head); | |
1887 | s_assert(!user->channel.head); | |
1888 | } | |
1889 | ||
1890 | rb_bh_free(user_heap, user); | |
1891 | } | |
1892 | } | |
1893 | ||
1894 | void | |
1895 | allocate_away(struct Client *client_p) | |
1896 | { | |
1897 | if(client_p->user->away == NULL) | |
1898 | client_p->user->away = rb_bh_alloc(away_heap); | |
1899 | } | |
1900 | ||
1901 | ||
1902 | void | |
1903 | free_away(struct Client *client_p) | |
1904 | { | |
1905 | if(client_p->user != NULL && client_p->user->away != NULL) { | |
1906 | rb_bh_free(away_heap, client_p->user->away); | |
1907 | client_p->user->away = NULL; | |
1908 | } | |
1909 | } | |
1910 | ||
1911 | void | |
1912 | init_uid(void) | |
1913 | { | |
1914 | int i; | |
1915 | ||
1916 | for(i = 0; i < 3; i++) | |
1917 | current_uid[i] = me.id[i]; | |
1918 | ||
1919 | for(i = 3; i < 9; i++) | |
1920 | current_uid[i] = 'A'; | |
1921 | ||
1922 | current_uid[9] = '\0'; | |
1923 | } | |
1924 | ||
1925 | ||
1926 | char * | |
1927 | generate_uid(void) | |
1928 | { | |
1929 | static int flipped = 0; | |
1930 | int i; | |
1931 | ||
1932 | uid_restart: | |
1933 | for(i = 8; i > 3; i--) | |
1934 | { | |
1935 | if(current_uid[i] == 'Z') | |
1936 | { | |
1937 | current_uid[i] = '0'; | |
1938 | goto out; | |
1939 | } | |
1940 | else if(current_uid[i] != '9') | |
1941 | { | |
1942 | current_uid[i]++; | |
1943 | goto out; | |
1944 | } | |
1945 | else | |
1946 | current_uid[i] = 'A'; | |
1947 | } | |
1948 | ||
1949 | /* if this next if() triggers, we're fucked. */ | |
1950 | if(current_uid[3] == 'Z') | |
1951 | { | |
1952 | current_uid[i] = 'A'; | |
1953 | flipped = 1; | |
1954 | } | |
1955 | else | |
1956 | current_uid[i]++; | |
1957 | out: | |
1958 | /* if this happens..well, i'm not sure what to say, but lets handle it correctly */ | |
1959 | if(rb_unlikely(flipped)) | |
1960 | { | |
1961 | /* this slows down uid generation a bit... */ | |
1962 | if(find_id(current_uid) != NULL) | |
1963 | goto uid_restart; | |
1964 | } | |
1965 | return current_uid; | |
1966 | } | |
1967 | ||
1968 | /* | |
1969 | * close_connection | |
1970 | * Close the physical connection. This function must make | |
1971 | * MyConnect(client_p) == FALSE, and set client_p->from == NULL. | |
1972 | */ | |
1973 | void | |
1974 | close_connection(struct Client *client_p) | |
1975 | { | |
1976 | s_assert(client_p != NULL); | |
1977 | if(client_p == NULL) | |
1978 | return; | |
1979 | ||
1980 | s_assert(MyConnect(client_p)); | |
1981 | if(!MyConnect(client_p)) | |
1982 | return; | |
1983 | ||
1984 | if(IsServer(client_p)) | |
1985 | { | |
1986 | struct server_conf *server_p; | |
1987 | ||
1988 | ServerStats.is_sv++; | |
1989 | ServerStats.is_sbs += client_p->localClient->sendB; | |
1990 | ServerStats.is_sbr += client_p->localClient->receiveB; | |
1991 | ServerStats.is_sti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); | |
1992 | ||
1993 | /* | |
1994 | * If the connection has been up for a long amount of time, schedule | |
1995 | * a 'quick' reconnect, else reset the next-connect cycle. | |
1996 | */ | |
1997 | if((server_p = find_server_conf(client_p->name)) != NULL) | |
1998 | { | |
1999 | /* | |
2000 | * Reschedule a faster reconnect, if this was a automatically | |
2001 | * connected configuration entry. (Note that if we have had | |
2002 | * a rehash in between, the status has been changed to | |
2003 | * CONF_ILLEGAL). But only do this if it was a "good" link. | |
2004 | */ | |
2005 | server_p->hold = time(NULL); | |
2006 | server_p->hold += | |
2007 | (server_p->hold - client_p->localClient->lasttime > | |
2008 | HANGONGOODLINK) ? HANGONRETRYDELAY : ConFreq(server_p->class); | |
2009 | } | |
2010 | ||
2011 | } | |
2012 | else if(IsClient(client_p)) | |
2013 | { | |
2014 | ServerStats.is_cl++; | |
2015 | ServerStats.is_cbs += client_p->localClient->sendB; | |
2016 | ServerStats.is_cbr += client_p->localClient->receiveB; | |
2017 | ServerStats.is_cti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime); | |
2018 | } | |
2019 | else | |
2020 | ServerStats.is_ni++; | |
2021 | ||
2022 | client_release_connids(client_p); | |
2023 | ||
2024 | if(client_p->localClient->F != NULL) | |
2025 | { | |
2026 | /* attempt to flush any pending dbufs. Evil, but .. -- adrian */ | |
2027 | if(!IsIOError(client_p)) | |
2028 | send_queued(client_p); | |
2029 | ||
2030 | rb_close(client_p->localClient->F); | |
2031 | client_p->localClient->F = NULL; | |
2032 | } | |
2033 | ||
2034 | rb_linebuf_donebuf(&client_p->localClient->buf_sendq); | |
2035 | rb_linebuf_donebuf(&client_p->localClient->buf_recvq); | |
2036 | detach_conf(client_p); | |
2037 | ||
2038 | /* XXX shouldnt really be done here. */ | |
2039 | detach_server_conf(client_p); | |
2040 | ||
2041 | client_p->from = NULL; /* ...this should catch them! >:) --msa */ | |
2042 | ClearMyConnect(client_p); | |
2043 | SetIOError(client_p); | |
2044 | } | |
2045 | ||
2046 | ||
2047 | ||
2048 | void | |
2049 | error_exit_client(struct Client *client_p, int error) | |
2050 | { | |
2051 | /* | |
2052 | * ...hmm, with non-blocking sockets we might get | |
2053 | * here from quite valid reasons, although.. why | |
2054 | * would select report "data available" when there | |
2055 | * wasn't... so, this must be an error anyway... --msa | |
2056 | * actually, EOF occurs when read() returns 0 and | |
2057 | * in due course, select() returns that fd as ready | |
2058 | * for reading even though it ends up being an EOF. -avalon | |
2059 | */ | |
2060 | char errmsg[255]; | |
2061 | int current_error = rb_get_sockerr(client_p->localClient->F); | |
2062 | ||
2063 | SetIOError(client_p); | |
2064 | ||
2065 | if(IsServer(client_p) || IsHandshake(client_p)) | |
2066 | { | |
2067 | if(error == 0) | |
2068 | { | |
2069 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2070 | "Server %s closed the connection", | |
2071 | client_p->name); | |
2072 | ||
2073 | ilog(L_SERVER, "Server %s closed the connection", | |
2074 | log_client_name(client_p, SHOW_IP)); | |
2075 | } | |
2076 | else | |
2077 | { | |
2078 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2079 | "Lost connection to %s: %s", | |
2080 | client_p->name, strerror(current_error)); | |
2081 | ilog(L_SERVER, "Lost connection to %s: %s", | |
2082 | log_client_name(client_p, SHOW_IP), strerror(current_error)); | |
2083 | } | |
2084 | } | |
2085 | ||
2086 | if(error == 0) | |
2087 | rb_strlcpy(errmsg, "Remote host closed the connection", sizeof(errmsg)); | |
2088 | else | |
2089 | snprintf(errmsg, sizeof(errmsg), "Read error: %s", strerror(current_error)); | |
2090 | ||
2091 | exit_client(client_p, client_p, &me, errmsg); | |
2092 | } |