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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful 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 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | * | |
f80a1823 | 24 | * $Id: client.c 3514 2007-06-06 16:25:21Z nenolod $ |
212380e3 AC |
25 | */ |
26 | #include "stdinc.h" | |
27 | #include "config.h" | |
28 | ||
29 | #include "tools.h" | |
30 | #include "client.h" | |
31 | #include "class.h" | |
32 | #include "common.h" | |
33 | #include "event.h" | |
34 | #include "hash.h" | |
35 | #include "irc_string.h" | |
36 | #include "sprintf_irc.h" | |
37 | #include "ircd.h" | |
38 | #include "s_gline.h" | |
39 | #include "numeric.h" | |
40 | #include "packet.h" | |
41 | #include "s_auth.h" | |
42 | #include "commio.h" | |
43 | #include "s_conf.h" | |
44 | #include "s_newconf.h" | |
45 | #include "s_log.h" | |
46 | #include "s_serv.h" | |
47 | #include "s_stats.h" | |
48 | #include "send.h" | |
49 | #include "whowas.h" | |
50 | #include "s_user.h" | |
51 | #include "linebuf.h" | |
52 | #include "hash.h" | |
53 | #include "memory.h" | |
54 | #include "hostmask.h" | |
55 | #include "balloc.h" | |
56 | #include "listener.h" | |
57 | #include "hook.h" | |
58 | #include "msg.h" | |
59 | #include "monitor.h" | |
60 | #include "blacklist.h" | |
54015b5f | 61 | #include "reject.h" |
994544c2 | 62 | #include "scache.h" |
212380e3 AC |
63 | |
64 | #define DEBUG_EXITED_CLIENTS | |
65 | ||
66 | static void check_pings_list(dlink_list * list); | |
67 | static void check_unknowns_list(dlink_list * list); | |
68 | static void free_exited_clients(void *unused); | |
69 | static void exit_aborted_clients(void *unused); | |
70 | ||
71 | static int exit_remote_client(struct Client *, struct Client *, struct Client *,const char *); | |
72 | static int exit_remote_server(struct Client *, struct Client *, struct Client *,const char *); | |
73 | static int exit_local_client(struct Client *, struct Client *, struct Client *,const char *); | |
74 | static int exit_unknown_client(struct Client *, struct Client *, struct Client *,const char *); | |
75 | static int exit_local_server(struct Client *, struct Client *, struct Client *,const char *); | |
76 | static int qs_server(struct Client *, struct Client *, struct Client *, const char *comment); | |
77 | ||
78 | static EVH check_pings; | |
79 | ||
80 | extern BlockHeap *client_heap; | |
81 | extern BlockHeap *lclient_heap; | |
82 | extern BlockHeap *pclient_heap; | |
83 | ||
84 | extern char current_uid[IDLEN]; | |
85 | ||
86 | enum | |
87 | { | |
88 | D_LINED, | |
89 | K_LINED, | |
90 | G_LINED | |
91 | }; | |
92 | ||
93 | dlink_list dead_list; | |
94 | #ifdef DEBUG_EXITED_CLIENTS | |
95 | static dlink_list dead_remote_list; | |
96 | #endif | |
97 | ||
98 | struct abort_client | |
99 | { | |
100 | dlink_node node; | |
101 | struct Client *client; | |
102 | char notice[REASONLEN]; | |
103 | }; | |
104 | ||
105 | static dlink_list abort_list; | |
106 | ||
107 | ||
108 | /* | |
109 | * init_client | |
110 | * | |
111 | * inputs - NONE | |
112 | * output - NONE | |
113 | * side effects - initialize client free memory | |
114 | */ | |
115 | void | |
116 | init_client(void) | |
117 | { | |
118 | /* | |
119 | * start off the check ping event .. -- adrian | |
120 | * Every 30 seconds is plenty -- db | |
121 | */ | |
122 | client_heap = BlockHeapCreate(sizeof(struct Client), CLIENT_HEAP_SIZE); | |
123 | lclient_heap = BlockHeapCreate(sizeof(struct LocalUser), LCLIENT_HEAP_SIZE); | |
124 | pclient_heap = BlockHeapCreate(sizeof(struct PreClient), PCLIENT_HEAP_SIZE); | |
125 | eventAddIsh("check_pings", check_pings, NULL, 30); | |
126 | eventAddIsh("free_exited_clients", &free_exited_clients, NULL, 4); | |
127 | eventAddIsh("exit_aborted_clients", exit_aborted_clients, NULL, 1); | |
128 | } | |
129 | ||
130 | ||
131 | /* | |
132 | * make_client - create a new Client struct and set it to initial state. | |
133 | * | |
134 | * from == NULL, create local client (a client connected | |
135 | * to a socket). | |
136 | * | |
137 | * from, create remote client (behind a socket | |
138 | * associated with the client defined by | |
139 | * 'from'). ('from' is a local client!!). | |
140 | */ | |
141 | struct Client * | |
142 | make_client(struct Client *from) | |
143 | { | |
144 | struct Client *client_p = NULL; | |
145 | struct LocalUser *localClient; | |
146 | ||
147 | client_p = BlockHeapAlloc(client_heap); | |
148 | ||
149 | if(from == NULL) | |
150 | { | |
151 | client_p->from = client_p; /* 'from' of local client is self! */ | |
152 | ||
153 | localClient = (struct LocalUser *) BlockHeapAlloc(lclient_heap); | |
154 | SetMyConnect(client_p); | |
155 | client_p->localClient = localClient; | |
156 | ||
157 | client_p->localClient->lasttime = client_p->localClient->firsttime = CurrentTime; | |
158 | ||
159 | client_p->localClient->fd = -1; | |
160 | client_p->localClient->ctrlfd = -1; | |
161 | ||
162 | client_p->preClient = (struct PreClient *) BlockHeapAlloc(pclient_heap); | |
163 | ||
164 | /* as good a place as any... */ | |
165 | dlinkAdd(client_p, &client_p->localClient->tnode, &unknown_list); | |
166 | } | |
167 | else | |
168 | { /* from is not NULL */ | |
169 | client_p->localClient = NULL; | |
170 | client_p->preClient = NULL; | |
171 | client_p->from = from; /* 'from' of local client is self! */ | |
172 | } | |
173 | ||
174 | SetUnknown(client_p); | |
175 | strcpy(client_p->username, "unknown"); | |
176 | ||
177 | return client_p; | |
178 | } | |
179 | ||
180 | void | |
181 | free_pre_client(struct Client *client_p) | |
182 | { | |
183 | struct Blacklist *blptr; | |
184 | ||
185 | s_assert(NULL != client_p); | |
186 | ||
187 | if(client_p->preClient == NULL) | |
188 | return; | |
189 | ||
190 | blptr = client_p->preClient->dnsbl_listed; | |
191 | if (blptr != NULL) | |
192 | unref_blacklist(blptr); | |
193 | abort_blacklist_queries(client_p); | |
194 | BlockHeapFree(pclient_heap, client_p->preClient); | |
195 | client_p->preClient = NULL; | |
196 | } | |
197 | ||
198 | static void | |
199 | free_local_client(struct Client *client_p) | |
200 | { | |
201 | s_assert(NULL != client_p); | |
202 | s_assert(&me != client_p); | |
203 | ||
204 | if(client_p->localClient == NULL) | |
205 | return; | |
206 | ||
207 | /* | |
208 | * clean up extra sockets from P-lines which have been discarded. | |
209 | */ | |
210 | if(client_p->localClient->listener) | |
211 | { | |
212 | s_assert(0 < client_p->localClient->listener->ref_count); | |
213 | if(0 == --client_p->localClient->listener->ref_count | |
214 | && !client_p->localClient->listener->active) | |
215 | free_listener(client_p->localClient->listener); | |
216 | client_p->localClient->listener = 0; | |
217 | } | |
218 | ||
219 | if(client_p->localClient->fd >= 0) | |
220 | comm_close(client_p->localClient->fd); | |
221 | ||
222 | if(client_p->localClient->passwd) | |
223 | { | |
224 | memset(client_p->localClient->passwd, 0, | |
225 | strlen(client_p->localClient->passwd)); | |
226 | MyFree(client_p->localClient->passwd); | |
227 | } | |
228 | ||
229 | MyFree(client_p->localClient->challenge); | |
230 | MyFree(client_p->localClient->fullcaps); | |
231 | MyFree(client_p->localClient->opername); | |
232 | MyFree(client_p->localClient->mangledhost); | |
233 | ||
234 | BlockHeapFree(lclient_heap, client_p->localClient); | |
235 | client_p->localClient = NULL; | |
236 | } | |
237 | ||
238 | void | |
239 | free_client(struct Client *client_p) | |
240 | { | |
241 | s_assert(NULL != client_p); | |
242 | s_assert(&me != client_p); | |
243 | free_local_client(client_p); | |
244 | free_pre_client(client_p); | |
245 | BlockHeapFree(client_heap, client_p); | |
246 | } | |
247 | ||
248 | /* | |
249 | * check_pings - go through the local client list and check activity | |
250 | * kill off stuff that should die | |
251 | * | |
252 | * inputs - NOT USED (from event) | |
253 | * output - next time_t when check_pings() should be called again | |
254 | * side effects - | |
255 | * | |
256 | * | |
257 | * A PING can be sent to clients as necessary. | |
258 | * | |
259 | * Client/Server ping outs are handled. | |
260 | */ | |
261 | ||
262 | /* | |
263 | * Addon from adrian. We used to call this after nextping seconds, | |
264 | * however I've changed it to run once a second. This is only for | |
265 | * PING timeouts, not K/etc-line checks (thanks dianora!). Having it | |
266 | * run once a second makes life a lot easier - when a new client connects | |
267 | * and they need a ping in 4 seconds, if nextping was set to 20 seconds | |
268 | * we end up waiting 20 seconds. This is stupid. :-) | |
269 | * I will optimise (hah!) check_pings() once I've finished working on | |
270 | * tidying up other network IO evilnesses. | |
271 | * -- adrian | |
272 | */ | |
273 | ||
274 | static void | |
275 | check_pings(void *notused) | |
276 | { | |
277 | check_pings_list(&lclient_list); | |
278 | check_pings_list(&serv_list); | |
279 | check_unknowns_list(&unknown_list); | |
280 | } | |
281 | ||
282 | /* | |
283 | * Check_pings_list() | |
284 | * | |
285 | * inputs - pointer to list to check | |
286 | * output - NONE | |
287 | * side effects - | |
288 | */ | |
289 | static void | |
290 | check_pings_list(dlink_list * list) | |
291 | { | |
292 | char scratch[32]; /* way too generous but... */ | |
293 | struct Client *client_p; /* current local client_p being examined */ | |
294 | int ping = 0; /* ping time value from client */ | |
295 | dlink_node *ptr, *next_ptr; | |
296 | ||
297 | DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) | |
298 | { | |
299 | client_p = ptr->data; | |
300 | ||
301 | /* | |
302 | ** Note: No need to notify opers here. It's | |
303 | ** already done when "FLAGS_DEADSOCKET" is set. | |
304 | */ | |
305 | if(!MyConnect(client_p) || IsDead(client_p)) | |
306 | continue; | |
307 | ||
308 | if(IsPerson(client_p)) | |
309 | { | |
310 | if(!IsExemptKline(client_p) && | |
311 | GlobalSetOptions.idletime && | |
312 | !IsOper(client_p) && | |
313 | !IsIdlelined(client_p) && | |
314 | ((CurrentTime - client_p->localClient->last) > GlobalSetOptions.idletime)) | |
315 | { | |
316 | struct ConfItem *aconf; | |
317 | ||
318 | aconf = make_conf(); | |
319 | aconf->status = CONF_KILL; | |
320 | ||
321 | DupString(aconf->host, client_p->host); | |
322 | DupString(aconf->passwd, "idle exceeder"); | |
323 | DupString(aconf->user, client_p->username); | |
324 | aconf->port = 0; | |
325 | aconf->hold = CurrentTime + 60; | |
326 | add_temp_kline(aconf); | |
327 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
328 | "Idle time limit exceeded for %s - temp k-lining", | |
329 | get_client_name(client_p, HIDE_IP)); | |
330 | ||
331 | exit_client(client_p, client_p, &me, aconf->passwd); | |
332 | continue; | |
333 | } | |
334 | } | |
335 | ||
336 | if(!IsRegistered(client_p)) | |
337 | ping = ConfigFileEntry.connect_timeout; | |
338 | else | |
339 | ping = get_client_ping(client_p); | |
340 | ||
341 | if(ping < (CurrentTime - client_p->localClient->lasttime)) | |
342 | { | |
343 | /* | |
344 | * If the client/server hasnt talked to us in 2*ping seconds | |
345 | * and it has a ping time, then close its connection. | |
346 | */ | |
347 | if(((CurrentTime - client_p->localClient->lasttime) >= (2 * ping) | |
348 | && (client_p->flags & FLAGS_PINGSENT))) | |
349 | { | |
350 | if(IsAnyServer(client_p)) | |
351 | { | |
352 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
353 | "No response from %s, closing link", | |
354 | get_server_name(client_p, HIDE_IP)); | |
355 | ilog(L_SERVER, | |
356 | "No response from %s, closing link", | |
357 | log_client_name(client_p, HIDE_IP)); | |
358 | } | |
359 | (void) ircsnprintf(scratch, sizeof(scratch), | |
360 | "Ping timeout: %d seconds", | |
361 | (int) (CurrentTime - client_p->localClient->lasttime)); | |
362 | ||
363 | exit_client(client_p, client_p, &me, scratch); | |
364 | continue; | |
365 | } | |
366 | else if((client_p->flags & FLAGS_PINGSENT) == 0) | |
367 | { | |
368 | /* | |
369 | * if we havent PINGed the connection and we havent | |
370 | * heard from it in a while, PING it to make sure | |
371 | * it is still alive. | |
372 | */ | |
373 | client_p->flags |= FLAGS_PINGSENT; | |
374 | /* not nice but does the job */ | |
375 | client_p->localClient->lasttime = CurrentTime - ping; | |
376 | sendto_one(client_p, "PING :%s", me.name); | |
377 | } | |
378 | } | |
379 | /* ping_timeout: */ | |
380 | ||
381 | } | |
382 | } | |
383 | ||
384 | /* | |
385 | * check_unknowns_list | |
386 | * | |
387 | * inputs - pointer to list of unknown clients | |
388 | * output - NONE | |
389 | * side effects - unknown clients get marked for termination after n seconds | |
390 | */ | |
391 | static void | |
392 | check_unknowns_list(dlink_list * list) | |
393 | { | |
394 | dlink_node *ptr, *next_ptr; | |
395 | struct Client *client_p; | |
396 | ||
397 | DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) | |
398 | { | |
399 | client_p = ptr->data; | |
400 | ||
401 | if(IsDead(client_p) || IsClosing(client_p)) | |
402 | continue; | |
403 | ||
404 | /* | |
405 | * Check UNKNOWN connections - if they have been in this state | |
406 | * for > 30s, close them. | |
407 | */ | |
408 | ||
409 | if((CurrentTime - client_p->localClient->firsttime) > 30) | |
410 | exit_client(client_p, client_p, &me, "Connection timed out"); | |
411 | } | |
412 | } | |
413 | ||
414 | static void | |
415 | notify_banned_client(struct Client *client_p, struct ConfItem *aconf, int ban) | |
416 | { | |
417 | static const char conn_closed[] = "Connection closed"; | |
418 | static const char d_lined[] = "D-lined"; | |
419 | static const char k_lined[] = "K-lined"; | |
420 | static const char g_lined[] = "G-lined"; | |
421 | const char *reason = NULL; | |
422 | const char *exit_reason = conn_closed; | |
423 | ||
424 | if(ConfigFileEntry.kline_with_reason && !EmptyString(aconf->passwd)) | |
425 | { | |
426 | reason = aconf->passwd; | |
427 | exit_reason = aconf->passwd; | |
428 | } | |
429 | else | |
430 | { | |
431 | switch (aconf->status) | |
432 | { | |
433 | case D_LINED: | |
434 | reason = d_lined; | |
435 | break; | |
436 | case G_LINED: | |
437 | reason = g_lined; | |
438 | break; | |
439 | default: | |
440 | reason = k_lined; | |
441 | break; | |
442 | } | |
443 | } | |
444 | ||
445 | if(ban == D_LINED && !IsPerson(client_p)) | |
446 | sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined"); | |
447 | else | |
448 | sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP), | |
449 | me.name, client_p->name, reason); | |
450 | ||
451 | exit_client(client_p, client_p, &me, | |
452 | EmptyString(ConfigFileEntry.kline_reason) ? exit_reason : | |
453 | ConfigFileEntry.kline_reason); | |
454 | } | |
455 | ||
456 | /* | |
457 | * check_banned_lines | |
458 | * inputs - NONE | |
459 | * output - NONE | |
460 | * side effects - Check all connections for a pending k/d/gline against the | |
461 | * client, exit the client if found. | |
462 | */ | |
463 | void | |
464 | check_banned_lines(void) | |
465 | { | |
466 | struct Client *client_p; /* current local client_p being examined */ | |
467 | struct ConfItem *aconf = NULL; | |
468 | dlink_node *ptr, *next_ptr; | |
469 | ||
470 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
471 | { | |
472 | client_p = ptr->data; | |
473 | ||
474 | if(IsMe(client_p)) | |
475 | continue; | |
476 | ||
477 | /* if there is a returned struct ConfItem then kill it */ | |
478 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, client_p->localClient->ip.ss_family))) | |
479 | { | |
480 | if(aconf->status & CONF_EXEMPTDLINE) | |
481 | continue; | |
482 | ||
483 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
484 | "DLINE active for %s", | |
485 | get_client_name(client_p, HIDE_IP)); | |
486 | ||
487 | notify_banned_client(client_p, aconf, D_LINED); | |
488 | continue; /* and go examine next fd/client_p */ | |
489 | } | |
490 | ||
491 | if(!IsPerson(client_p)) | |
492 | continue; | |
493 | ||
494 | if((aconf = find_kline(client_p)) != NULL) | |
495 | { | |
496 | if(IsExemptKline(client_p)) | |
497 | { | |
498 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
499 | "KLINE over-ruled for %s, client is kline_exempt [%s@%s]", | |
500 | get_client_name(client_p, HIDE_IP), | |
501 | aconf->user, aconf->host); | |
502 | continue; | |
503 | } | |
504 | ||
505 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
506 | "KLINE active for %s", | |
507 | get_client_name(client_p, HIDE_IP)); | |
508 | notify_banned_client(client_p, aconf, K_LINED); | |
509 | continue; | |
510 | } | |
511 | else if((aconf = find_gline(client_p)) != NULL) | |
512 | { | |
513 | if(IsExemptKline(client_p)) | |
514 | { | |
515 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
516 | "GLINE over-ruled for %s, client is kline_exempt [%s@%s]", | |
517 | get_client_name(client_p, HIDE_IP), | |
518 | aconf->user, aconf->host); | |
519 | continue; | |
520 | } | |
521 | ||
522 | if(IsExemptGline(client_p)) | |
523 | { | |
524 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
525 | "GLINE over-ruled for %s, client is gline_exempt [%s@%s]", | |
526 | get_client_name(client_p, HIDE_IP), | |
527 | aconf->user, aconf->host); | |
528 | continue; | |
529 | } | |
530 | ||
531 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
532 | "GLINE active for %s", | |
533 | get_client_name(client_p, HIDE_IP)); | |
534 | ||
535 | notify_banned_client(client_p, aconf, G_LINED); | |
536 | continue; | |
537 | } | |
538 | else if((aconf = find_xline(client_p->info, 1)) != NULL) | |
539 | { | |
540 | if(IsExemptKline(client_p)) | |
541 | { | |
542 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
543 | "XLINE over-ruled for %s, client is kline_exempt [%s]", | |
544 | get_client_name(client_p, HIDE_IP), | |
545 | aconf->name); | |
546 | continue; | |
547 | } | |
548 | ||
549 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
550 | get_client_name(client_p, HIDE_IP)); | |
551 | ||
552 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
553 | continue; | |
554 | } | |
555 | } | |
556 | ||
557 | /* also check the unknowns list for new dlines */ | |
558 | DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) | |
559 | { | |
560 | client_p = ptr->data; | |
561 | ||
562 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family))) | |
563 | { | |
564 | if(aconf->status & CONF_EXEMPTDLINE) | |
565 | continue; | |
566 | ||
567 | notify_banned_client(client_p, aconf, D_LINED); | |
568 | } | |
569 | } | |
570 | ||
571 | } | |
572 | ||
573 | /* check_klines_event() | |
574 | * | |
575 | * inputs - | |
576 | * outputs - | |
577 | * side effects - check_klines() is called, kline_queued unset | |
578 | */ | |
579 | void | |
580 | check_klines_event(void *unused) | |
581 | { | |
582 | kline_queued = 0; | |
583 | check_klines(); | |
584 | } | |
585 | ||
586 | /* check_klines | |
587 | * | |
588 | * inputs - | |
589 | * outputs - | |
590 | * side effects - all clients will be checked for klines | |
591 | */ | |
592 | void | |
593 | check_klines(void) | |
594 | { | |
595 | struct Client *client_p; | |
596 | struct ConfItem *aconf; | |
597 | dlink_node *ptr; | |
598 | dlink_node *next_ptr; | |
599 | ||
600 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
601 | { | |
602 | client_p = ptr->data; | |
603 | ||
604 | if(IsMe(client_p) || !IsPerson(client_p)) | |
605 | continue; | |
606 | ||
607 | if((aconf = find_kline(client_p)) != NULL) | |
608 | { | |
609 | if(IsExemptKline(client_p)) | |
610 | { | |
611 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
612 | "KLINE over-ruled for %s, client is kline_exempt", | |
613 | get_client_name(client_p, HIDE_IP)); | |
614 | continue; | |
615 | } | |
616 | ||
617 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
618 | "KLINE active for %s", | |
619 | get_client_name(client_p, HIDE_IP)); | |
620 | ||
621 | notify_banned_client(client_p, aconf, K_LINED); | |
622 | continue; | |
623 | } | |
624 | } | |
625 | } | |
626 | ||
627 | /* check_glines() | |
628 | * | |
629 | * inputs - | |
630 | * outputs - | |
631 | * side effects - all clients will be checked for glines | |
632 | */ | |
633 | void | |
634 | check_glines(void) | |
635 | { | |
636 | struct Client *client_p; | |
637 | struct ConfItem *aconf; | |
638 | dlink_node *ptr; | |
639 | dlink_node *next_ptr; | |
640 | ||
641 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
642 | { | |
643 | client_p = ptr->data; | |
644 | ||
645 | if(IsMe(client_p) || !IsPerson(client_p)) | |
646 | continue; | |
647 | ||
648 | if((aconf = find_gline(client_p)) != NULL) | |
649 | { | |
650 | if(IsExemptKline(client_p)) | |
651 | { | |
652 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
653 | "GLINE over-ruled for %s, client is kline_exempt", | |
654 | get_client_name(client_p, HIDE_IP)); | |
655 | continue; | |
656 | } | |
657 | ||
658 | if(IsExemptGline(client_p)) | |
659 | { | |
660 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
661 | "GLINE over-ruled for %s, client is gline_exempt", | |
662 | get_client_name(client_p, HIDE_IP)); | |
663 | continue; | |
664 | } | |
665 | ||
666 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
667 | "GLINE active for %s", | |
668 | get_client_name(client_p, HIDE_IP)); | |
669 | ||
670 | notify_banned_client(client_p, aconf, K_LINED); | |
671 | continue; | |
672 | } | |
673 | } | |
674 | } | |
675 | ||
676 | /* check_dlines() | |
677 | * | |
678 | * inputs - | |
679 | * outputs - | |
680 | * side effects - all clients will be checked for dlines | |
681 | */ | |
682 | void | |
683 | check_dlines(void) | |
684 | { | |
685 | struct Client *client_p; | |
686 | struct ConfItem *aconf; | |
687 | dlink_node *ptr; | |
688 | dlink_node *next_ptr; | |
689 | ||
690 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
691 | { | |
692 | client_p = ptr->data; | |
693 | ||
694 | if(IsMe(client_p)) | |
695 | continue; | |
696 | ||
697 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) | |
698 | { | |
699 | if(aconf->status & CONF_EXEMPTDLINE) | |
700 | continue; | |
701 | ||
702 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
703 | "DLINE active for %s", | |
704 | get_client_name(client_p, HIDE_IP)); | |
705 | ||
706 | notify_banned_client(client_p, aconf, D_LINED); | |
707 | continue; | |
708 | } | |
709 | } | |
710 | ||
711 | /* dlines need to be checked against unknowns too */ | |
712 | DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) | |
713 | { | |
714 | client_p = ptr->data; | |
715 | ||
716 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) | |
717 | { | |
718 | if(aconf->status & CONF_EXEMPTDLINE) | |
719 | continue; | |
720 | ||
721 | notify_banned_client(client_p, aconf, D_LINED); | |
722 | } | |
723 | } | |
724 | } | |
725 | ||
726 | /* check_xlines | |
727 | * | |
728 | * inputs - | |
729 | * outputs - | |
730 | * side effects - all clients will be checked for xlines | |
731 | */ | |
732 | void | |
733 | check_xlines(void) | |
734 | { | |
735 | struct Client *client_p; | |
736 | struct ConfItem *aconf; | |
737 | dlink_node *ptr; | |
738 | dlink_node *next_ptr; | |
739 | ||
740 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
741 | { | |
742 | client_p = ptr->data; | |
743 | ||
744 | if(IsMe(client_p) || !IsPerson(client_p)) | |
745 | continue; | |
746 | ||
747 | if((aconf = find_xline(client_p->info, 1)) != NULL) | |
748 | { | |
749 | if(IsExemptKline(client_p)) | |
750 | { | |
751 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
752 | "XLINE over-ruled for %s, client is kline_exempt", | |
753 | get_client_name(client_p, HIDE_IP)); | |
754 | continue; | |
755 | } | |
756 | ||
757 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
758 | get_client_name(client_p, HIDE_IP)); | |
759 | ||
760 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
761 | continue; | |
762 | } | |
763 | } | |
764 | } | |
765 | ||
766 | /* | |
767 | * update_client_exit_stats | |
768 | * | |
769 | * input - pointer to client | |
770 | * output - NONE | |
771 | * side effects - | |
772 | */ | |
773 | static void | |
774 | update_client_exit_stats(struct Client *client_p) | |
775 | { | |
776 | if(IsServer(client_p)) | |
777 | { | |
778 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
779 | "Server %s split from %s", | |
780 | client_p->name, client_p->servptr->name); | |
781 | if(HasSentEob(client_p)) | |
782 | eob_count--; | |
783 | } | |
784 | else if(IsClient(client_p)) | |
785 | { | |
786 | --Count.total; | |
787 | if(IsOper(client_p)) | |
788 | --Count.oper; | |
789 | if(IsInvisible(client_p)) | |
790 | --Count.invisi; | |
791 | } | |
792 | ||
793 | if(splitchecking && !splitmode) | |
794 | check_splitmode(NULL); | |
795 | } | |
796 | ||
797 | /* | |
798 | * release_client_state | |
799 | * | |
800 | * input - pointer to client to release | |
801 | * output - NONE | |
802 | * side effects - | |
803 | */ | |
804 | static void | |
805 | release_client_state(struct Client *client_p) | |
806 | { | |
807 | if(client_p->user != NULL) | |
808 | { | |
809 | free_user(client_p->user, client_p); /* try this here */ | |
810 | } | |
811 | if(client_p->serv) | |
812 | { | |
813 | if(client_p->serv->user != NULL) | |
814 | free_user(client_p->serv->user, client_p); | |
815 | if(client_p->serv->fullcaps) | |
816 | MyFree(client_p->serv->fullcaps); | |
817 | MyFree(client_p->serv); | |
818 | } | |
819 | } | |
820 | ||
821 | /* | |
822 | * remove_client_from_list | |
823 | * inputs - point to client to remove | |
824 | * output - NONE | |
825 | * side effects - taken the code from ExitOneClient() for this | |
826 | * and placed it here. - avalon | |
827 | */ | |
828 | static void | |
829 | remove_client_from_list(struct Client *client_p) | |
830 | { | |
831 | s_assert(NULL != client_p); | |
832 | ||
833 | if(client_p == NULL) | |
834 | return; | |
835 | ||
836 | /* A client made with make_client() | |
837 | * is on the unknown_list until removed. | |
838 | * If it =does= happen to exit before its removed from that list | |
839 | * and its =not= on the global_client_list, it will core here. | |
840 | * short circuit that case now -db | |
841 | */ | |
842 | if(client_p->node.prev == NULL && client_p->node.next == NULL) | |
843 | return; | |
844 | ||
845 | dlinkDelete(&client_p->node, &global_client_list); | |
846 | ||
847 | update_client_exit_stats(client_p); | |
848 | } | |
849 | ||
850 | ||
851 | /* | |
852 | * find_person - find person by (nick)name. | |
853 | * inputs - pointer to name | |
854 | * output - return client pointer | |
855 | * side effects - | |
856 | */ | |
857 | struct Client * | |
858 | find_person(const char *name) | |
859 | { | |
860 | struct Client *c2ptr; | |
861 | ||
862 | c2ptr = find_client(name); | |
863 | ||
864 | if(c2ptr && IsPerson(c2ptr)) | |
865 | return (c2ptr); | |
866 | return (NULL); | |
867 | } | |
868 | ||
869 | struct Client * | |
870 | find_named_person(const char *name) | |
871 | { | |
872 | struct Client *c2ptr; | |
873 | ||
874 | c2ptr = find_named_client(name); | |
875 | ||
876 | if(c2ptr && IsPerson(c2ptr)) | |
877 | return (c2ptr); | |
878 | return (NULL); | |
879 | } | |
880 | ||
881 | ||
882 | /* | |
883 | * find_chasing - find the client structure for a nick name (user) | |
884 | * using history mechanism if necessary. If the client is not found, | |
885 | * an error message (NO SUCH NICK) is generated. If the client was found | |
886 | * through the history, chasing will be 1 and otherwise 0. | |
887 | */ | |
888 | struct Client * | |
889 | find_chasing(struct Client *source_p, const char *user, int *chasing) | |
890 | { | |
891 | struct Client *who; | |
892 | ||
893 | if(MyClient(source_p)) | |
894 | who = find_named_person(user); | |
895 | else | |
896 | who = find_person(user); | |
897 | ||
898 | if(chasing) | |
899 | *chasing = 0; | |
900 | ||
901 | if(who || IsDigit(*user)) | |
902 | return who; | |
903 | ||
904 | if(!(who = get_history(user, (long) KILLCHASETIMELIMIT))) | |
905 | { | |
906 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
907 | form_str(ERR_NOSUCHNICK), user); | |
908 | return (NULL); | |
909 | } | |
910 | if(chasing) | |
911 | *chasing = 1; | |
912 | return who; | |
913 | } | |
914 | ||
915 | /* | |
916 | * get_client_name - Return the name of the client | |
917 | * for various tracking and | |
918 | * admin purposes. The main purpose of this function is to | |
919 | * return the "socket host" name of the client, if that | |
920 | * differs from the advertised name (other than case). | |
921 | * But, this can be used to any client structure. | |
922 | * | |
923 | * NOTE 1: | |
924 | * Watch out the allocation of "nbuf", if either source_p->name | |
925 | * or source_p->sockhost gets changed into pointers instead of | |
926 | * directly allocated within the structure... | |
927 | * | |
928 | * NOTE 2: | |
929 | * Function return either a pointer to the structure (source_p) or | |
930 | * to internal buffer (nbuf). *NEVER* use the returned pointer | |
931 | * to modify what it points!!! | |
932 | */ | |
933 | ||
934 | const char * | |
935 | get_client_name(struct Client *client, int showip) | |
936 | { | |
937 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
938 | ||
939 | s_assert(NULL != client); | |
940 | if(client == NULL) | |
941 | return NULL; | |
942 | ||
943 | if(MyConnect(client)) | |
944 | { | |
945 | if(!irccmp(client->name, client->host)) | |
946 | return client->name; | |
947 | ||
948 | if(ConfigFileEntry.hide_spoof_ips && | |
949 | showip == SHOW_IP && IsIPSpoof(client)) | |
950 | showip = MASK_IP; | |
951 | #ifdef HIDE_SERVERS_IPS | |
952 | if(IsAnyServer(client)) | |
953 | showip = MASK_IP; | |
954 | #endif | |
955 | ||
956 | /* And finally, let's get the host information, ip or name */ | |
957 | switch (showip) | |
958 | { | |
959 | case SHOW_IP: | |
960 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
961 | client->name, client->username, | |
962 | client->sockhost); | |
963 | break; | |
964 | case MASK_IP: | |
965 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
966 | client->name, client->username); | |
967 | break; | |
968 | default: | |
969 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
970 | client->name, client->username, client->host); | |
971 | } | |
972 | return nbuf; | |
973 | } | |
974 | ||
975 | /* As pointed out by Adel Mezibra | |
976 | * Neph|l|m@EFnet. Was missing a return here. | |
977 | */ | |
978 | return client->name; | |
979 | } | |
980 | ||
981 | const char * | |
982 | get_server_name(struct Client *target_p, int showip) | |
983 | { | |
984 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
985 | ||
986 | if(target_p == NULL) | |
987 | return NULL; | |
988 | ||
989 | if(!MyConnect(target_p) || !irccmp(target_p->name, target_p->host)) | |
990 | return target_p->name; | |
991 | ||
992 | #ifdef HIDE_SERVERS_IPS | |
993 | if(EmptyString(target_p->name)) | |
994 | { | |
995 | ircsnprintf(nbuf, sizeof(nbuf), "[%s@255.255.255.255]", | |
996 | target_p->username); | |
997 | return nbuf; | |
998 | } | |
999 | else | |
1000 | return target_p->name; | |
1001 | #endif | |
1002 | ||
1003 | switch (showip) | |
1004 | { | |
1005 | case SHOW_IP: | |
1006 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
1007 | target_p->name, target_p->username, | |
1008 | target_p->sockhost); | |
1009 | break; | |
1010 | ||
1011 | case MASK_IP: | |
1012 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
1013 | target_p->name, target_p->username); | |
1014 | ||
1015 | default: | |
1016 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
1017 | target_p->name, target_p->username, | |
1018 | target_p->host); | |
1019 | } | |
1020 | ||
1021 | return nbuf; | |
1022 | } | |
1023 | ||
1024 | /* log_client_name() | |
1025 | * | |
1026 | * This version is the same as get_client_name, but doesnt contain the | |
1027 | * code that will hide IPs always. This should be used for logfiles. | |
1028 | */ | |
1029 | const char * | |
1030 | log_client_name(struct Client *target_p, int showip) | |
1031 | { | |
1032 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
1033 | ||
1034 | if(target_p == NULL) | |
1035 | return NULL; | |
1036 | ||
1037 | if(MyConnect(target_p)) | |
1038 | { | |
1039 | if(irccmp(target_p->name, target_p->host) == 0) | |
1040 | return target_p->name; | |
1041 | ||
1042 | switch (showip) | |
1043 | { | |
1044 | case SHOW_IP: | |
1045 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, | |
1046 | target_p->username, target_p->sockhost); | |
1047 | break; | |
1048 | ||
1049 | case MASK_IP: | |
1050 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
1051 | target_p->name, target_p->username); | |
1052 | ||
1053 | default: | |
1054 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, | |
1055 | target_p->username, target_p->host); | |
1056 | } | |
1057 | ||
1058 | return nbuf; | |
1059 | } | |
1060 | ||
1061 | return target_p->name; | |
1062 | } | |
1063 | ||
1064 | /* is_remote_connect - Returns whether a server was /connect'ed by a remote | |
1065 | * oper (send notices netwide) */ | |
1066 | int | |
1067 | is_remote_connect(struct Client *client_p) | |
1068 | { | |
1069 | struct Client *oper; | |
1070 | ||
1071 | if (client_p->serv == NULL) | |
1072 | return FALSE; | |
1073 | oper = find_named_person(client_p->serv->by); | |
1074 | return oper != NULL && IsOper(oper) && !MyConnect(oper); | |
1075 | } | |
1076 | ||
1077 | static void | |
1078 | free_exited_clients(void *unused) | |
1079 | { | |
1080 | dlink_node *ptr, *next; | |
1081 | struct Client *target_p; | |
1082 | ||
1083 | DLINK_FOREACH_SAFE(ptr, next, dead_list.head) | |
1084 | { | |
1085 | target_p = ptr->data; | |
1086 | ||
1087 | #ifdef DEBUG_EXITED_CLIENTS | |
1088 | { | |
1089 | struct abort_client *abt; | |
1090 | dlink_node *aptr; | |
1091 | int found = 0; | |
1092 | ||
1093 | DLINK_FOREACH(aptr, abort_list.head) | |
1094 | { | |
1095 | abt = aptr->data; | |
1096 | if(abt->client == target_p) | |
1097 | { | |
1098 | s_assert(0); | |
1099 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1100 | "On abort_list: %s stat: %u flags: %u/%u handler: %c", | |
1101 | target_p->name, (unsigned int) target_p->status, | |
1102 | target_p->flags, target_p->flags2, target_p->handler); | |
1103 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1104 | "Please report this to the charybdis developers!"); |
212380e3 AC |
1105 | found++; |
1106 | } | |
1107 | } | |
1108 | ||
1109 | if(found) | |
1110 | { | |
1111 | dlinkDestroy(ptr, &dead_list); | |
1112 | continue; | |
1113 | } | |
1114 | } | |
1115 | #endif | |
1116 | ||
1117 | if(ptr->data == NULL) | |
1118 | { | |
1119 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1120 | "Warning: null client on dead_list!"); | |
1121 | dlinkDestroy(ptr, &dead_list); | |
1122 | continue; | |
1123 | } | |
1124 | release_client_state(target_p); | |
1125 | free_client(target_p); | |
1126 | dlinkDestroy(ptr, &dead_list); | |
1127 | } | |
1128 | ||
1129 | #ifdef DEBUG_EXITED_CLIENTS | |
1130 | DLINK_FOREACH_SAFE(ptr, next, dead_remote_list.head) | |
1131 | { | |
1132 | target_p = ptr->data; | |
1133 | ||
1134 | if(ptr->data == NULL) | |
1135 | { | |
1136 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1137 | "Warning: null client on dead_list!"); | |
1138 | dlinkDestroy(ptr, &dead_list); | |
1139 | continue; | |
1140 | } | |
1141 | release_client_state(target_p); | |
1142 | free_client(target_p); | |
1143 | dlinkDestroy(ptr, &dead_remote_list); | |
1144 | } | |
1145 | #endif | |
1146 | ||
1147 | } | |
1148 | ||
1149 | /* | |
1150 | ** Recursively send QUITs and SQUITs for source_p and all its dependent clients | |
1151 | ** and servers to those servers that need them. A server needs the client | |
1152 | ** QUITs if it can't figure them out from the SQUIT (ie pre-TS4) or if it | |
1153 | ** isn't getting the SQUIT because of @#(*&@)# hostmasking. With TS4, once | |
1154 | ** a link gets a SQUIT, it doesn't need any QUIT/SQUITs for clients depending | |
1155 | ** on that one -orabidoo | |
1156 | */ | |
1157 | static void | |
1158 | recurse_send_quits(struct Client *client_p, struct Client *source_p, | |
1159 | struct Client *to, const char *comment1, | |
1160 | const char *comment) | |
1161 | { | |
1162 | struct Client *target_p; | |
1163 | dlink_node *ptr, *ptr_next; | |
1164 | /* If this server can handle quit storm (QS) removal | |
1165 | * of dependents, just send the SQUIT | |
1166 | */ | |
1167 | ||
1168 | if(IsCapable(to, CAP_QS)) | |
1169 | { | |
1170 | sendto_one(to, "SQUIT %s :%s", | |
1171 | get_id(source_p, to), comment); | |
1172 | } | |
1173 | else | |
1174 | { | |
1175 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1176 | { | |
1177 | target_p = ptr->data; | |
1178 | sendto_one(to, ":%s QUIT :%s", target_p->name, comment1); | |
1179 | } | |
1180 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) | |
1181 | { | |
1182 | target_p = ptr->data; | |
1183 | recurse_send_quits(client_p, target_p, to, comment1, comment); | |
1184 | } | |
1185 | sendto_one(to, "SQUIT %s :%s", source_p->name, comment); | |
1186 | } | |
1187 | } | |
1188 | ||
1189 | /* | |
1190 | ** Remove all clients that depend on source_p; assumes all (S)QUITs have | |
1191 | ** already been sent. we make sure to exit a server's dependent clients | |
1192 | ** and servers before the server itself; exit_one_client takes care of | |
1193 | ** actually removing things off llists. tweaked from +CSr31 -orabidoo | |
1194 | */ | |
1195 | /* | |
1196 | * added sanity test code.... source_p->serv might be NULL... | |
1197 | */ | |
1198 | static void | |
1199 | recurse_remove_clients(struct Client *source_p, const char *comment) | |
1200 | { | |
1201 | struct Client *target_p; | |
1202 | dlink_node *ptr, *ptr_next; | |
1203 | ||
1204 | if(IsMe(source_p)) | |
1205 | return; | |
1206 | ||
1207 | if(source_p->serv == NULL) /* oooops. uh this is actually a major bug */ | |
1208 | return; | |
1209 | ||
1210 | /* this is very ugly, but it saves cpu :P */ | |
1211 | if(ConfigFileEntry.nick_delay > 0) | |
1212 | { | |
1213 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1214 | { | |
1215 | target_p = ptr->data; | |
1216 | target_p->flags |= FLAGS_KILLED; | |
1217 | add_nd_entry(target_p->name); | |
1218 | ||
1219 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1220 | exit_remote_client(NULL, target_p, &me, comment); | |
1221 | } | |
1222 | } | |
1223 | else | |
1224 | { | |
1225 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1226 | { | |
1227 | target_p = ptr->data; | |
1228 | target_p->flags |= FLAGS_KILLED; | |
1229 | ||
1230 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1231 | exit_remote_client(NULL, target_p, &me, comment); | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) | |
1236 | { | |
1237 | target_p = ptr->data; | |
1238 | recurse_remove_clients(target_p, comment); | |
1239 | qs_server(NULL, target_p, &me, comment); | |
1240 | } | |
1241 | } | |
1242 | ||
1243 | /* | |
1244 | ** Remove *everything* that depends on source_p, from all lists, and sending | |
1245 | ** all necessary QUITs and SQUITs. source_p itself is still on the lists, | |
1246 | ** and its SQUITs have been sent except for the upstream one -orabidoo | |
1247 | */ | |
1248 | static void | |
1249 | remove_dependents(struct Client *client_p, | |
1250 | struct Client *source_p, | |
1251 | struct Client *from, const char *comment, const char *comment1) | |
1252 | { | |
1253 | struct Client *to; | |
1254 | dlink_node *ptr, *next; | |
1255 | ||
1256 | DLINK_FOREACH_SAFE(ptr, next, serv_list.head) | |
1257 | { | |
1258 | to = ptr->data; | |
1259 | ||
1260 | if(IsMe(to) || to == source_p->from || | |
1261 | (to == client_p && IsCapable(to, CAP_QS))) | |
1262 | continue; | |
1263 | ||
1264 | recurse_send_quits(client_p, source_p, to, comment1, comment); | |
1265 | } | |
1266 | ||
1267 | recurse_remove_clients(source_p, comment1); | |
1268 | } | |
1269 | ||
1270 | void | |
1271 | exit_aborted_clients(void *unused) | |
1272 | { | |
1273 | struct abort_client *abt; | |
1274 | dlink_node *ptr, *next; | |
1275 | DLINK_FOREACH_SAFE(ptr, next, abort_list.head) | |
1276 | { | |
1277 | abt = ptr->data; | |
1278 | ||
1279 | #ifdef DEBUG_EXITED_CLIENTS | |
1280 | { | |
1281 | if(dlinkFind(abt->client, &dead_list)) | |
1282 | { | |
1283 | s_assert(0); | |
1284 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1285 | "On dead_list: %s stat: %u flags: %u/%u handler: %c", | |
1286 | abt->client->name, (unsigned int) abt->client->status, | |
1287 | abt->client->flags, abt->client->flags2, abt->client->handler); | |
1288 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
f80a1823 | 1289 | "Please report this to the charybdis developers!"); |
212380e3 AC |
1290 | continue; |
1291 | } | |
1292 | } | |
1293 | #endif | |
1294 | ||
1295 | s_assert(*((unsigned long*)abt->client) != 0xdeadbeef); /* This is lame but its a debug thing */ | |
1296 | dlinkDelete(ptr, &abort_list); | |
1297 | ||
1298 | if(IsAnyServer(abt->client)) | |
1299 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1300 | "Closing link to %s: %s", | |
1301 | get_server_name(abt->client, HIDE_IP), abt->notice); | |
1302 | ||
1303 | /* its no longer on abort list - we *must* remove | |
1304 | * FLAGS_CLOSING otherwise exit_client() will not run --fl | |
1305 | */ | |
1306 | abt->client->flags &= ~FLAGS_CLOSING; | |
1307 | exit_client(abt->client, abt->client, &me, abt->notice); | |
1308 | MyFree(abt); | |
1309 | } | |
1310 | } | |
1311 | ||
1312 | ||
1313 | /* | |
1314 | * dead_link - Adds client to a list of clients that need an exit_client() | |
1315 | * | |
1316 | */ | |
1317 | void | |
1318 | dead_link(struct Client *client_p) | |
1319 | { | |
1320 | struct abort_client *abt; | |
1321 | ||
1322 | s_assert(!IsMe(client_p)); | |
1323 | if(IsDead(client_p) || IsClosing(client_p) || IsMe(client_p)) | |
1324 | return; | |
1325 | ||
1326 | abt = (struct abort_client *) MyMalloc(sizeof(struct abort_client)); | |
1327 | ||
1328 | if(client_p->flags & FLAGS_SENDQEX) | |
1329 | strlcpy(abt->notice, "Max SendQ exceeded", sizeof(abt->notice)); | |
1330 | else | |
1331 | ircsnprintf(abt->notice, sizeof(abt->notice), "Write error: %s", strerror(errno)); | |
1332 | ||
1333 | abt->client = client_p; | |
1334 | SetIOError(client_p); | |
1335 | SetDead(client_p); | |
1336 | SetClosing(client_p); | |
1337 | dlinkAdd(abt, &abt->node, &abort_list); | |
1338 | } | |
1339 | ||
1340 | ||
1341 | /* This does the remove of the user from channels..local or remote */ | |
1342 | static inline void | |
1343 | exit_generic_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1344 | const char *comment) | |
1345 | { | |
1346 | dlink_node *ptr, *next_ptr; | |
1347 | ||
1348 | if(IsOper(source_p)) | |
1349 | dlinkFindDestroy(source_p, &oper_list); | |
1350 | ||
1351 | sendto_common_channels_local(source_p, ":%s!%s@%s QUIT :%s", | |
1352 | source_p->name, | |
1353 | source_p->username, source_p->host, comment); | |
1354 | ||
1355 | remove_user_from_channels(source_p); | |
1356 | ||
1357 | /* Should not be in any channels now */ | |
1358 | s_assert(source_p->user->channel.head == NULL); | |
1359 | ||
1360 | /* Clean up invitefield */ | |
1361 | DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->user->invited.head) | |
1362 | { | |
1363 | del_invite(ptr->data, source_p); | |
1364 | } | |
1365 | ||
1366 | /* Clean up allow lists */ | |
1367 | del_all_accepts(source_p); | |
1368 | ||
1369 | add_history(source_p, 0); | |
1370 | off_history(source_p); | |
1371 | ||
1372 | monitor_signoff(source_p); | |
1373 | ||
1374 | if(has_id(source_p)) | |
1375 | del_from_id_hash(source_p->id, source_p); | |
1376 | ||
1377 | del_from_hostname_hash(source_p->orighost, source_p); | |
1378 | del_from_client_hash(source_p->name, source_p); | |
1379 | remove_client_from_list(source_p); | |
1380 | } | |
1381 | ||
1382 | /* | |
1383 | * Assumes IsPerson(source_p) && !MyConnect(source_p) | |
1384 | */ | |
1385 | ||
1386 | static int | |
1387 | exit_remote_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1388 | const char *comment) | |
1389 | { | |
1390 | exit_generic_client(client_p, source_p, from, comment); | |
1391 | ||
1392 | if(source_p->servptr && source_p->servptr->serv) | |
1393 | { | |
1394 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users); | |
1395 | } | |
1396 | ||
1397 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1398 | { | |
1399 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1400 | ":%s QUIT :%s", use_id(source_p), comment); | |
1401 | sendto_server(client_p, NULL, NOCAPS, CAP_TS6, | |
1402 | ":%s QUIT :%s", source_p->name, comment); | |
1403 | } | |
1404 | ||
1405 | SetDead(source_p); | |
1406 | #ifdef DEBUG_EXITED_CLIENTS | |
1407 | dlinkAddAlloc(source_p, &dead_remote_list); | |
1408 | #else | |
1409 | dlinkAddAlloc(source_p, &dead_list); | |
1410 | #endif | |
1411 | return(CLIENT_EXITED); | |
1412 | } | |
1413 | ||
1414 | /* | |
1415 | * This assumes IsUnknown(source_p) == TRUE and MyConnect(source_p) == TRUE | |
1416 | */ | |
1417 | ||
1418 | static int | |
1419 | exit_unknown_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1420 | const char *comment) | |
1421 | { | |
1422 | delete_auth_queries(source_p); | |
1423 | client_flush_input(source_p); | |
54015b5f | 1424 | del_unknown_ip(source_p); |
212380e3 AC |
1425 | dlinkDelete(&source_p->localClient->tnode, &unknown_list); |
1426 | ||
1427 | if(!IsIOError(source_p)) | |
dd12a19c JT |
1428 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", |
1429 | source_p->user != NULL ? source_p->host : "127.0.0.1", | |
1430 | comment); | |
212380e3 AC |
1431 | |
1432 | close_connection(source_p); | |
1433 | ||
1434 | if(has_id(source_p)) | |
1435 | del_from_id_hash(source_p->id, source_p); | |
1436 | ||
1437 | del_from_hostname_hash(source_p->host, source_p); | |
1438 | del_from_client_hash(source_p->name, source_p); | |
1439 | remove_client_from_list(source_p); | |
212380e3 AC |
1440 | SetDead(source_p); |
1441 | dlinkAddAlloc(source_p, &dead_list); | |
1442 | ||
1443 | /* Note that we don't need to add unknowns to the dead_list */ | |
1444 | return(CLIENT_EXITED); | |
1445 | } | |
1446 | ||
1447 | static int | |
1448 | exit_remote_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1449 | const char *comment) | |
1450 | { | |
1451 | static char comment1[(HOSTLEN*2)+2]; | |
1452 | static char newcomment[BUFSIZE]; | |
1453 | struct Client *target_p; | |
1454 | ||
1455 | if(ConfigServerHide.flatten_links) | |
1456 | strcpy(comment1, "*.net *.split"); | |
1457 | else | |
1458 | { | |
66c8fdd2 | 1459 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1460 | strcat(comment1, " "); |
1461 | strcat(comment1, source_p->name); | |
1462 | } | |
1463 | if (IsPerson(from)) | |
1464 | ircsnprintf(newcomment, sizeof(newcomment), "by %s: %s", | |
1465 | from->name, comment); | |
1466 | ||
1467 | if(source_p->serv != NULL) | |
1468 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1469 | ||
1470 | if(source_p->servptr && source_p->servptr->serv) | |
1471 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1472 | else | |
1473 | s_assert(0); | |
1474 | ||
1475 | dlinkFindDestroy(source_p, &global_serv_list); | |
1476 | target_p = source_p->from; | |
1477 | ||
1478 | if(target_p != NULL && IsServer(target_p) && target_p != client_p && | |
1479 | !IsMe(target_p) && (source_p->flags & FLAGS_KILLED) == 0) | |
1480 | { | |
1481 | sendto_one(target_p, ":%s SQUIT %s :%s", | |
1482 | get_id(from, target_p), get_id(source_p, target_p), | |
1483 | comment); | |
1484 | } | |
1485 | ||
1486 | if(has_id(source_p)) | |
1487 | del_from_id_hash(source_p->id, source_p); | |
1488 | ||
1489 | del_from_client_hash(source_p->name, source_p); | |
1490 | remove_client_from_list(source_p); | |
994544c2 | 1491 | scache_split(source_p->serv->nameinfo); |
212380e3 AC |
1492 | |
1493 | SetDead(source_p); | |
1494 | #ifdef DEBUG_EXITED_CLIENTS | |
1495 | dlinkAddAlloc(source_p, &dead_remote_list); | |
1496 | #else | |
1497 | dlinkAddAlloc(source_p, &dead_list); | |
1498 | #endif | |
1499 | return 0; | |
1500 | } | |
1501 | ||
1502 | static int | |
1503 | qs_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1504 | const char *comment) | |
1505 | { | |
1506 | struct Client *target_p; | |
1507 | ||
1508 | if(source_p->servptr && source_p->servptr->serv) | |
1509 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1510 | else | |
1511 | s_assert(0); | |
1512 | ||
1513 | dlinkFindDestroy(source_p, &global_serv_list); | |
1514 | target_p = source_p->from; | |
1515 | ||
1516 | if(has_id(source_p)) | |
1517 | del_from_id_hash(source_p->id, source_p); | |
1518 | ||
1519 | del_from_client_hash(source_p->name, source_p); | |
1520 | remove_client_from_list(source_p); | |
1521 | ||
1522 | SetDead(source_p); | |
1523 | dlinkAddAlloc(source_p, &dead_list); | |
1524 | return 0; | |
1525 | } | |
1526 | ||
1527 | static int | |
1528 | exit_local_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1529 | const char *comment) | |
1530 | { | |
1531 | static char comment1[(HOSTLEN*2)+2]; | |
1532 | static char newcomment[BUFSIZE]; | |
1533 | unsigned int sendk, recvk; | |
1534 | ||
1535 | dlinkDelete(&source_p->localClient->tnode, &serv_list); | |
1536 | dlinkFindDestroy(source_p, &global_serv_list); | |
1537 | ||
1538 | unset_chcap_usage_counts(source_p); | |
1539 | sendk = source_p->localClient->sendK; | |
1540 | recvk = source_p->localClient->receiveK; | |
1541 | ||
1542 | /* Always show source here, so the server notices show | |
1543 | * which side initiated the split -- jilles | |
1544 | */ | |
1545 | ircsnprintf(newcomment, sizeof(newcomment), "by %s: %s", | |
1546 | from == source_p ? me.name : from->name, comment); | |
1547 | if (!IsIOError(source_p)) | |
1548 | sendto_one(source_p, "SQUIT %s :%s", use_id(source_p), | |
1549 | newcomment); | |
1550 | if(client_p != NULL && source_p != client_p && !IsIOError(source_p)) | |
1551 | { | |
1552 | sendto_one(source_p, "ERROR :Closing Link: 127.0.0.1 %s (%s)", | |
1553 | source_p->name, comment); | |
1554 | } | |
1555 | ||
212380e3 AC |
1556 | if(source_p->servptr && source_p->servptr->serv) |
1557 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1558 | else | |
1559 | s_assert(0); | |
1560 | ||
1561 | ||
1562 | close_connection(source_p); | |
1563 | ||
1564 | if(ConfigServerHide.flatten_links) | |
1565 | strcpy(comment1, "*.net *.split"); | |
1566 | else | |
1567 | { | |
66c8fdd2 | 1568 | strcpy(comment1, source_p->servptr->name); |
212380e3 AC |
1569 | strcat(comment1, " "); |
1570 | strcat(comment1, source_p->name); | |
1571 | } | |
1572 | ||
1573 | if(source_p->serv != NULL) | |
1574 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1575 | ||
1576 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s was connected" | |
1577 | " for %ld seconds. %d/%d sendK/recvK.", | |
1578 | source_p->name, CurrentTime - source_p->localClient->firsttime, sendk, recvk); | |
1579 | ||
1580 | ilog(L_SERVER, "%s was connected for %ld seconds. %d/%d sendK/recvK.", | |
1581 | source_p->name, CurrentTime - source_p->localClient->firsttime, sendk, recvk); | |
1582 | ||
1583 | if(has_id(source_p)) | |
1584 | del_from_id_hash(source_p->id, source_p); | |
1585 | ||
1586 | del_from_client_hash(source_p->name, source_p); | |
1587 | remove_client_from_list(source_p); | |
994544c2 | 1588 | scache_split(source_p->serv->nameinfo); |
212380e3 AC |
1589 | |
1590 | SetDead(source_p); | |
1591 | dlinkAddAlloc(source_p, &dead_list); | |
1592 | return 0; | |
1593 | } | |
1594 | ||
1595 | ||
1596 | /* | |
1597 | * This assumes IsPerson(source_p) == TRUE && MyConnect(source_p) == TRUE | |
1598 | */ | |
1599 | ||
1600 | static int | |
1601 | exit_local_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1602 | const char *comment) | |
1603 | { | |
1604 | unsigned long on_for; | |
1605 | ||
1606 | exit_generic_client(client_p, source_p, from, comment); | |
1607 | clear_monitor(source_p); | |
1608 | ||
1609 | s_assert(IsPerson(source_p)); | |
1610 | client_flush_input(source_p); | |
1611 | dlinkDelete(&source_p->localClient->tnode, &lclient_list); | |
1612 | dlinkDelete(&source_p->lnode, &me.serv->users); | |
1613 | ||
1614 | if(IsOper(source_p)) | |
1615 | dlinkFindDestroy(source_p, &local_oper_list); | |
1616 | ||
1617 | sendto_realops_snomask(SNO_CCONN, L_ALL, | |
1618 | "Client exiting: %s (%s@%s) [%s] [%s]", | |
1619 | source_p->name, | |
1620 | source_p->username, source_p->host, comment, | |
1621 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255"); | |
1622 | ||
1623 | sendto_realops_snomask(SNO_CCONNEXT, L_ALL, | |
1624 | "CLIEXIT %s %s %s %s 0 %s", | |
1625 | source_p->name, source_p->username, source_p->host, | |
1626 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255", | |
1627 | comment); | |
1628 | ||
1629 | on_for = CurrentTime - source_p->localClient->firsttime; | |
1630 | ||
1631 | ilog(L_USER, "%s (%3lu:%02lu:%02lu): %s!%s@%s %d/%d", | |
1632 | myctime(CurrentTime), on_for / 3600, | |
1633 | (on_for % 3600) / 60, on_for % 60, | |
1634 | source_p->name, source_p->username, source_p->host, | |
1635 | source_p->localClient->sendK, source_p->localClient->receiveK); | |
1636 | ||
1637 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", source_p->host, comment); | |
1638 | close_connection(source_p); | |
1639 | ||
1640 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1641 | { | |
1642 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1643 | ":%s QUIT :%s", use_id(source_p), comment); | |
1644 | sendto_server(client_p, NULL, NOCAPS, CAP_TS6, | |
1645 | ":%s QUIT :%s", source_p->name, comment); | |
1646 | } | |
1647 | ||
1648 | SetDead(source_p); | |
1649 | dlinkAddAlloc(source_p, &dead_list); | |
1650 | return(CLIENT_EXITED); | |
1651 | } | |
1652 | ||
1653 | ||
1654 | /* | |
1655 | ** exit_client - This is old "m_bye". Name changed, because this is not a | |
1656 | ** protocol function, but a general server utility function. | |
1657 | ** | |
1658 | ** This function exits a client of *any* type (user, server, etc) | |
1659 | ** from this server. Also, this generates all necessary prototol | |
1660 | ** messages that this exit may cause. | |
1661 | ** | |
1662 | ** 1) If the client is a local client, then this implicitly | |
1663 | ** exits all other clients depending on this connection (e.g. | |
1664 | ** remote clients having 'from'-field that points to this. | |
1665 | ** | |
1666 | ** 2) If the client is a remote client, then only this is exited. | |
1667 | ** | |
1668 | ** For convenience, this function returns a suitable value for | |
1669 | ** m_function return value: | |
1670 | ** | |
1671 | ** CLIENT_EXITED if (client_p == source_p) | |
1672 | ** 0 if (client_p != source_p) | |
1673 | */ | |
1674 | int | |
1675 | exit_client(struct Client *client_p, /* The local client originating the | |
1676 | * exit or NULL, if this exit is | |
1677 | * generated by this server for | |
1678 | * internal reasons. | |
1679 | * This will not get any of the | |
1680 | * generated messages. */ | |
1681 | struct Client *source_p, /* Client exiting */ | |
1682 | struct Client *from, /* Client firing off this Exit, | |
1683 | * never NULL! */ | |
1684 | const char *comment /* Reason for the exit */ | |
1685 | ) | |
1686 | { | |
1687 | hook_data_client_exit hdata; | |
1688 | if(IsClosing(source_p)) | |
1689 | return -1; | |
1690 | ||
1691 | /* note, this HAS to be here, when we exit a client we attempt to | |
1692 | * send them data, if this generates a write error we must *not* add | |
1693 | * them to the abort list --fl | |
1694 | */ | |
1695 | SetClosing(source_p); | |
1696 | ||
1697 | hdata.local_link = client_p; | |
1698 | hdata.target = source_p; | |
1699 | hdata.from = from; | |
1700 | hdata.comment = comment; | |
1701 | call_hook(h_client_exit, &hdata); | |
1702 | ||
1703 | if(MyConnect(source_p)) | |
1704 | { | |
1705 | /* Local clients of various types */ | |
1706 | if(IsPerson(source_p)) | |
1707 | return exit_local_client(client_p, source_p, from, comment); | |
1708 | else if(IsServer(source_p)) | |
1709 | return exit_local_server(client_p, source_p, from, comment); | |
1710 | /* IsUnknown || IsConnecting || IsHandShake */ | |
1711 | else if(!IsReject(source_p)) | |
1712 | return exit_unknown_client(client_p, source_p, from, comment); | |
1713 | } | |
1714 | else | |
1715 | { | |
1716 | /* Remotes */ | |
1717 | if(IsPerson(source_p)) | |
1718 | return exit_remote_client(client_p, source_p, from, comment); | |
1719 | else if(IsServer(source_p)) | |
1720 | return exit_remote_server(client_p, source_p, from, comment); | |
1721 | } | |
1722 | ||
1723 | return -1; | |
1724 | } | |
1725 | ||
1726 | /* | |
1727 | * Count up local client memory | |
1728 | */ | |
1729 | ||
1730 | /* XXX one common Client list now */ | |
1731 | void | |
1732 | count_local_client_memory(size_t * count, size_t * local_client_memory_used) | |
1733 | { | |
1734 | size_t lusage; | |
1735 | BlockHeapUsage(lclient_heap, count, NULL, &lusage); | |
1736 | *local_client_memory_used = lusage + (*count * (sizeof(MemBlock) + sizeof(struct Client))); | |
1737 | } | |
1738 | ||
1739 | /* | |
1740 | * Count up remote client memory | |
1741 | */ | |
1742 | void | |
1743 | count_remote_client_memory(size_t * count, size_t * remote_client_memory_used) | |
1744 | { | |
1745 | size_t lcount, rcount; | |
1746 | BlockHeapUsage(lclient_heap, &lcount, NULL, NULL); | |
1747 | BlockHeapUsage(client_heap, &rcount, NULL, NULL); | |
1748 | *count = rcount - lcount; | |
1749 | *remote_client_memory_used = *count * (sizeof(MemBlock) + sizeof(struct Client)); | |
1750 | } | |
1751 | ||
1752 | ||
1753 | /* | |
1754 | * accept processing, this adds a form of "caller ID" to ircd | |
1755 | * | |
1756 | * If a client puts themselves into "caller ID only" mode, | |
1757 | * only clients that match a client pointer they have put on | |
1758 | * the accept list will be allowed to message them. | |
1759 | * | |
1760 | * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ] | |
1761 | * | |
1762 | * [target.allow_list] -> [ source1 ] -> [source2 ] | |
1763 | * | |
1764 | * i.e. a target will have a link list of source pointers it will allow | |
1765 | * each source client then has a back pointer pointing back | |
1766 | * to the client that has it on its accept list. | |
1767 | * This allows for exit_one_client to remove these now bogus entries | |
1768 | * from any client having an accept on them. | |
1769 | */ | |
1770 | /* | |
1771 | * del_all_accepts | |
1772 | * | |
1773 | * inputs - pointer to exiting client | |
1774 | * output - NONE | |
1775 | * side effects - Walk through given clients allow_list and on_allow_list | |
1776 | * remove all references to this client | |
1777 | */ | |
1778 | void | |
1779 | del_all_accepts(struct Client *client_p) | |
1780 | { | |
1781 | dlink_node *ptr; | |
1782 | dlink_node *next_ptr; | |
1783 | struct Client *target_p; | |
1784 | ||
1785 | if(MyClient(client_p) && client_p->localClient->allow_list.head) | |
1786 | { | |
1787 | /* clear this clients accept list, and remove them from | |
1788 | * everyones on_accept_list | |
1789 | */ | |
1790 | DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->allow_list.head) | |
1791 | { | |
1792 | target_p = ptr->data; | |
1793 | dlinkFindDestroy(client_p, &target_p->on_allow_list); | |
1794 | dlinkDestroy(ptr, &client_p->localClient->allow_list); | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | /* remove this client from everyones accept list */ | |
1799 | DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) | |
1800 | { | |
1801 | target_p = ptr->data; | |
1802 | dlinkFindDestroy(client_p, &target_p->localClient->allow_list); | |
1803 | dlinkDestroy(ptr, &client_p->on_allow_list); | |
1804 | } | |
1805 | } | |
1806 | ||
1807 | /* | |
1808 | * show_ip() - asks if the true IP shoudl be shown when source is | |
1809 | * askin for info about target | |
1810 | * | |
1811 | * Inputs - source_p who is asking | |
1812 | * - target_p who do we want the info on | |
1813 | * Output - returns 1 if clear IP can be showed, otherwise 0 | |
1814 | * Side Effects - none | |
1815 | */ | |
1816 | ||
1817 | int | |
1818 | show_ip(struct Client *source_p, struct Client *target_p) | |
1819 | { | |
1820 | if(IsAnyServer(target_p)) | |
1821 | { | |
1822 | #ifndef HIDE_SERVERS_IPS | |
1823 | if(source_p == NULL || IsOper(source_p)) | |
1824 | return 1; | |
1825 | #endif | |
1826 | return 0; | |
1827 | } | |
1828 | else if(IsIPSpoof(target_p)) | |
1829 | { | |
1830 | /* source == NULL indicates message is being sent | |
1831 | * to local opers. | |
1832 | */ | |
1833 | if(!ConfigFileEntry.hide_spoof_ips && | |
1834 | (source_p == NULL || MyOper(source_p))) | |
1835 | return 1; | |
1836 | return 0; | |
1837 | } | |
1838 | else if(IsDynSpoof(target_p) && (source_p != NULL && !IsOper(source_p))) | |
1839 | return 0; | |
1840 | else | |
1841 | return 1; | |
1842 | } | |
1843 | ||
1844 | int | |
1845 | show_ip_conf(struct ConfItem *aconf, struct Client *source_p) | |
1846 | { | |
1847 | if(IsConfDoSpoofIp(aconf)) | |
1848 | { | |
1849 | if(!ConfigFileEntry.hide_spoof_ips && MyOper(source_p)) | |
1850 | return 1; | |
1851 | ||
1852 | return 0; | |
1853 | } | |
1854 | else | |
1855 | return 1; | |
1856 | } | |
1857 | ||
1858 | /* | |
1859 | * initUser | |
1860 | * | |
1861 | * inputs - none | |
1862 | * outputs - none | |
1863 | * | |
1864 | * side effects - Creates a block heap for struct Users | |
1865 | * | |
1866 | */ | |
1867 | static BlockHeap *user_heap; | |
1868 | void | |
1869 | initUser(void) | |
1870 | { | |
1871 | user_heap = BlockHeapCreate(sizeof(struct User), USER_HEAP_SIZE); | |
1872 | if(!user_heap) | |
1873 | outofmemory(); | |
1874 | } | |
1875 | ||
1876 | /* | |
1877 | * make_user | |
1878 | * | |
1879 | * inputs - pointer to client struct | |
1880 | * output - pointer to struct User | |
1881 | * side effects - add's an User information block to a client | |
1882 | * if it was not previously allocated. | |
1883 | */ | |
1884 | struct User * | |
1885 | make_user(struct Client *client_p) | |
1886 | { | |
1887 | struct User *user; | |
1888 | ||
1889 | user = client_p->user; | |
1890 | if(!user) | |
1891 | { | |
1892 | user = (struct User *) BlockHeapAlloc(user_heap); | |
1893 | user->refcnt = 1; | |
1894 | client_p->user = user; | |
1895 | } | |
1896 | return user; | |
1897 | } | |
1898 | ||
1899 | /* | |
1900 | * make_server | |
1901 | * | |
1902 | * inputs - pointer to client struct | |
1903 | * output - pointer to server_t | |
1904 | * side effects - add's an Server information block to a client | |
1905 | * if it was not previously allocated. | |
1906 | */ | |
1907 | server_t * | |
1908 | make_server(struct Client *client_p) | |
1909 | { | |
1910 | server_t *serv = client_p->serv; | |
1911 | ||
1912 | if(!serv) | |
1913 | { | |
1914 | serv = (server_t *) MyMalloc(sizeof(server_t)); | |
1915 | client_p->serv = serv; | |
1916 | } | |
1917 | return client_p->serv; | |
1918 | } | |
1919 | ||
1920 | /* | |
1921 | * free_user | |
1922 | * | |
1923 | * inputs - pointer to user struct | |
1924 | * - pointer to client struct | |
1925 | * output - none | |
1926 | * side effects - Decrease user reference count by one and release block, | |
1927 | * if count reaches 0 | |
1928 | */ | |
1929 | void | |
1930 | free_user(struct User *user, struct Client *client_p) | |
1931 | { | |
1932 | if(--user->refcnt <= 0) | |
1933 | { | |
1934 | if(user->away) | |
1935 | MyFree((char *) user->away); | |
1936 | /* | |
1937 | * sanity check | |
1938 | */ | |
1939 | if(user->refcnt < 0 || user->invited.head || user->channel.head) | |
1940 | { | |
1941 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1942 | "* %#lx user (%s!%s@%s) %#lx %#lx %#lx %lu %d *", | |
1943 | (unsigned long) client_p, | |
1944 | client_p ? client_p-> | |
1945 | name : "<noname>", | |
1946 | client_p->username, | |
1947 | client_p->host, | |
1948 | (unsigned long) user, | |
1949 | (unsigned long) user->invited.head, | |
1950 | (unsigned long) user->channel.head, | |
1951 | dlink_list_length(&user->channel), | |
1952 | user->refcnt); | |
1953 | s_assert(!user->refcnt); | |
1954 | s_assert(!user->invited.head); | |
1955 | s_assert(!user->channel.head); | |
1956 | } | |
1957 | ||
1958 | BlockHeapFree(user_heap, user); | |
1959 | } | |
1960 | } | |
1961 | ||
1962 | void | |
1963 | init_uid(void) | |
1964 | { | |
1965 | int i; | |
1966 | ||
1967 | for(i = 0; i < 3; i++) | |
1968 | current_uid[i] = me.id[i]; | |
1969 | ||
1970 | for(i = 3; i < 9; i++) | |
1971 | current_uid[i] = 'A'; | |
1972 | ||
1973 | current_uid[9] = '\0'; | |
1974 | } | |
1975 | ||
1976 | ||
1977 | char * | |
1978 | generate_uid(void) | |
1979 | { | |
1980 | int i; | |
1981 | ||
1982 | for(i = 8; i > 3; i--) | |
1983 | { | |
1984 | if(current_uid[i] == 'Z') | |
1985 | { | |
1986 | current_uid[i] = '0'; | |
1987 | return current_uid; | |
1988 | } | |
1989 | else if(current_uid[i] != '9') | |
1990 | { | |
1991 | current_uid[i]++; | |
1992 | return current_uid; | |
1993 | } | |
1994 | else | |
1995 | current_uid[i] = 'A'; | |
1996 | } | |
1997 | ||
1998 | /* if this next if() triggers, we're fucked. */ | |
1999 | if(current_uid[3] == 'Z') | |
2000 | { | |
2001 | current_uid[i] = 'A'; | |
2002 | s_assert(0); | |
2003 | } | |
2004 | else | |
2005 | current_uid[i]++; | |
2006 | ||
2007 | return current_uid; | |
2008 | } | |
2009 | ||
2010 | /* | |
2011 | * close_connection | |
2012 | * Close the physical connection. This function must make | |
2013 | * MyConnect(client_p) == FALSE, and set client_p->from == NULL. | |
2014 | */ | |
2015 | void | |
2016 | close_connection(struct Client *client_p) | |
2017 | { | |
2018 | s_assert(client_p != NULL); | |
2019 | if(client_p == NULL) | |
2020 | return; | |
2021 | ||
2022 | s_assert(MyConnect(client_p)); | |
2023 | if(!MyConnect(client_p)) | |
2024 | return; | |
2025 | ||
2026 | if(IsServer(client_p)) | |
2027 | { | |
2028 | struct server_conf *server_p; | |
2029 | ||
2030 | ServerStats->is_sv++; | |
2031 | ServerStats->is_sbs += client_p->localClient->sendB; | |
2032 | ServerStats->is_sbr += client_p->localClient->receiveB; | |
2033 | ServerStats->is_sks += client_p->localClient->sendK; | |
2034 | ServerStats->is_skr += client_p->localClient->receiveK; | |
2035 | ServerStats->is_sti += CurrentTime - client_p->localClient->firsttime; | |
2036 | if(ServerStats->is_sbs > 2047) | |
2037 | { | |
2038 | ServerStats->is_sks += (ServerStats->is_sbs >> 10); | |
2039 | ServerStats->is_sbs &= 0x3ff; | |
2040 | } | |
2041 | if(ServerStats->is_sbr > 2047) | |
2042 | { | |
2043 | ServerStats->is_skr += (ServerStats->is_sbr >> 10); | |
2044 | ServerStats->is_sbr &= 0x3ff; | |
2045 | } | |
2046 | ||
2047 | /* | |
2048 | * If the connection has been up for a long amount of time, schedule | |
2049 | * a 'quick' reconnect, else reset the next-connect cycle. | |
2050 | */ | |
2051 | if((server_p = find_server_conf(client_p->name)) != NULL) | |
2052 | { | |
2053 | /* | |
2054 | * Reschedule a faster reconnect, if this was a automatically | |
2055 | * connected configuration entry. (Note that if we have had | |
2056 | * a rehash in between, the status has been changed to | |
2057 | * CONF_ILLEGAL). But only do this if it was a "good" link. | |
2058 | */ | |
2059 | server_p->hold = time(NULL); | |
2060 | server_p->hold += | |
2061 | (server_p->hold - client_p->localClient->lasttime > | |
2062 | HANGONGOODLINK) ? HANGONRETRYDELAY : ConFreq(server_p->class); | |
2063 | } | |
2064 | ||
2065 | } | |
2066 | else if(IsClient(client_p)) | |
2067 | { | |
2068 | ServerStats->is_cl++; | |
2069 | ServerStats->is_cbs += client_p->localClient->sendB; | |
2070 | ServerStats->is_cbr += client_p->localClient->receiveB; | |
2071 | ServerStats->is_cks += client_p->localClient->sendK; | |
2072 | ServerStats->is_ckr += client_p->localClient->receiveK; | |
2073 | ServerStats->is_cti += CurrentTime - client_p->localClient->firsttime; | |
2074 | if(ServerStats->is_cbs > 2047) | |
2075 | { | |
2076 | ServerStats->is_cks += (ServerStats->is_cbs >> 10); | |
2077 | ServerStats->is_cbs &= 0x3ff; | |
2078 | } | |
2079 | if(ServerStats->is_cbr > 2047) | |
2080 | { | |
2081 | ServerStats->is_ckr += (ServerStats->is_cbr >> 10); | |
2082 | ServerStats->is_cbr &= 0x3ff; | |
2083 | } | |
2084 | } | |
2085 | else | |
2086 | ServerStats->is_ni++; | |
2087 | ||
2088 | if(-1 < client_p->localClient->fd) | |
2089 | { | |
2090 | /* attempt to flush any pending dbufs. Evil, but .. -- adrian */ | |
2091 | if(!IsIOError(client_p)) | |
2092 | send_queued_write(client_p->localClient->fd, client_p); | |
2093 | ||
2094 | comm_close(client_p->localClient->fd); | |
2095 | client_p->localClient->fd = -1; | |
2096 | } | |
2097 | ||
64f2a7eb | 2098 | if(-1 < client_p->localClient->ctrlfd) |
212380e3 | 2099 | { |
64f2a7eb JT |
2100 | comm_close(client_p->localClient->ctrlfd); |
2101 | client_p->localClient->ctrlfd = -1; | |
212380e3 AC |
2102 | } |
2103 | ||
2104 | linebuf_donebuf(&client_p->localClient->buf_sendq); | |
2105 | linebuf_donebuf(&client_p->localClient->buf_recvq); | |
2106 | detach_conf(client_p); | |
2107 | ||
2108 | /* XXX shouldnt really be done here. */ | |
2109 | detach_server_conf(client_p); | |
2110 | ||
2111 | client_p->from = NULL; /* ...this should catch them! >:) --msa */ | |
2112 | ClearMyConnect(client_p); | |
2113 | SetIOError(client_p); | |
2114 | } | |
2115 | ||
2116 | ||
2117 | ||
2118 | void | |
2119 | error_exit_client(struct Client *client_p, int error) | |
2120 | { | |
2121 | /* | |
2122 | * ...hmm, with non-blocking sockets we might get | |
2123 | * here from quite valid reasons, although.. why | |
2124 | * would select report "data available" when there | |
2125 | * wasn't... so, this must be an error anyway... --msa | |
2126 | * actually, EOF occurs when read() returns 0 and | |
2127 | * in due course, select() returns that fd as ready | |
2128 | * for reading even though it ends up being an EOF. -avalon | |
2129 | */ | |
2130 | char errmsg[255]; | |
2131 | int current_error = comm_get_sockerr(client_p->localClient->fd); | |
2132 | ||
2133 | SetIOError(client_p); | |
2134 | ||
2135 | if(IsServer(client_p) || IsHandshake(client_p)) | |
2136 | { | |
2137 | int connected = CurrentTime - client_p->localClient->firsttime; | |
2138 | ||
2139 | if(error == 0) | |
2140 | { | |
2141 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2142 | "Server %s closed the connection", | |
2143 | get_server_name(client_p, SHOW_IP)); | |
2144 | ||
2145 | ilog(L_SERVER, "Server %s closed the connection", | |
2146 | log_client_name(client_p, SHOW_IP)); | |
2147 | } | |
2148 | else | |
2149 | { | |
2150 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2151 | "Lost connection to %s: %s", | |
2152 | client_p->name, strerror(current_error)); | |
2153 | ilog(L_SERVER, "Lost connection to %s: %s", | |
2154 | log_client_name(client_p, SHOW_IP), strerror(current_error)); | |
2155 | } | |
2156 | ||
2157 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
2158 | "%s had been connected for %d day%s, %2d:%02d:%02d", | |
2159 | client_p->name, connected / 86400, | |
2160 | (connected / 86400 == 1) ? "" : "s", | |
2161 | (connected % 86400) / 3600, | |
2162 | (connected % 3600) / 60, connected % 60); | |
2163 | } | |
2164 | ||
2165 | if(error == 0) | |
2166 | strlcpy(errmsg, "Remote host closed the connection", sizeof(errmsg)); | |
2167 | else | |
2168 | ircsnprintf(errmsg, sizeof(errmsg), "Read error: %s", strerror(current_error)); | |
2169 | ||
2170 | exit_client(client_p, client_p, &me, errmsg); | |
2171 | } |