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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 | * | |
dd12a19c | 24 | * $Id: client.c 3167 2007-01-26 18:52:11Z jilles $ |
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" | |
61 | ||
62 | #define DEBUG_EXITED_CLIENTS | |
63 | ||
64 | static void check_pings_list(dlink_list * list); | |
65 | static void check_unknowns_list(dlink_list * list); | |
66 | static void free_exited_clients(void *unused); | |
67 | static void exit_aborted_clients(void *unused); | |
68 | ||
69 | static int exit_remote_client(struct Client *, struct Client *, struct Client *,const char *); | |
70 | static int exit_remote_server(struct Client *, struct Client *, struct Client *,const char *); | |
71 | static int exit_local_client(struct Client *, struct Client *, struct Client *,const char *); | |
72 | static int exit_unknown_client(struct Client *, struct Client *, struct Client *,const char *); | |
73 | static int exit_local_server(struct Client *, struct Client *, struct Client *,const char *); | |
74 | static int qs_server(struct Client *, struct Client *, struct Client *, const char *comment); | |
75 | ||
76 | static EVH check_pings; | |
77 | ||
78 | extern BlockHeap *client_heap; | |
79 | extern BlockHeap *lclient_heap; | |
80 | extern BlockHeap *pclient_heap; | |
81 | ||
82 | extern char current_uid[IDLEN]; | |
83 | ||
84 | enum | |
85 | { | |
86 | D_LINED, | |
87 | K_LINED, | |
88 | G_LINED | |
89 | }; | |
90 | ||
91 | dlink_list dead_list; | |
92 | #ifdef DEBUG_EXITED_CLIENTS | |
93 | static dlink_list dead_remote_list; | |
94 | #endif | |
95 | ||
96 | struct abort_client | |
97 | { | |
98 | dlink_node node; | |
99 | struct Client *client; | |
100 | char notice[REASONLEN]; | |
101 | }; | |
102 | ||
103 | static dlink_list abort_list; | |
104 | ||
105 | ||
106 | /* | |
107 | * init_client | |
108 | * | |
109 | * inputs - NONE | |
110 | * output - NONE | |
111 | * side effects - initialize client free memory | |
112 | */ | |
113 | void | |
114 | init_client(void) | |
115 | { | |
116 | /* | |
117 | * start off the check ping event .. -- adrian | |
118 | * Every 30 seconds is plenty -- db | |
119 | */ | |
120 | client_heap = BlockHeapCreate(sizeof(struct Client), CLIENT_HEAP_SIZE); | |
121 | lclient_heap = BlockHeapCreate(sizeof(struct LocalUser), LCLIENT_HEAP_SIZE); | |
122 | pclient_heap = BlockHeapCreate(sizeof(struct PreClient), PCLIENT_HEAP_SIZE); | |
123 | eventAddIsh("check_pings", check_pings, NULL, 30); | |
124 | eventAddIsh("free_exited_clients", &free_exited_clients, NULL, 4); | |
125 | eventAddIsh("exit_aborted_clients", exit_aborted_clients, NULL, 1); | |
126 | } | |
127 | ||
128 | ||
129 | /* | |
130 | * make_client - create a new Client struct and set it to initial state. | |
131 | * | |
132 | * from == NULL, create local client (a client connected | |
133 | * to a socket). | |
134 | * | |
135 | * from, create remote client (behind a socket | |
136 | * associated with the client defined by | |
137 | * 'from'). ('from' is a local client!!). | |
138 | */ | |
139 | struct Client * | |
140 | make_client(struct Client *from) | |
141 | { | |
142 | struct Client *client_p = NULL; | |
143 | struct LocalUser *localClient; | |
144 | ||
145 | client_p = BlockHeapAlloc(client_heap); | |
146 | ||
147 | if(from == NULL) | |
148 | { | |
149 | client_p->from = client_p; /* 'from' of local client is self! */ | |
150 | ||
151 | localClient = (struct LocalUser *) BlockHeapAlloc(lclient_heap); | |
152 | SetMyConnect(client_p); | |
153 | client_p->localClient = localClient; | |
154 | ||
155 | client_p->localClient->lasttime = client_p->localClient->firsttime = CurrentTime; | |
156 | ||
157 | client_p->localClient->fd = -1; | |
158 | client_p->localClient->ctrlfd = -1; | |
159 | ||
160 | client_p->preClient = (struct PreClient *) BlockHeapAlloc(pclient_heap); | |
161 | ||
162 | /* as good a place as any... */ | |
163 | dlinkAdd(client_p, &client_p->localClient->tnode, &unknown_list); | |
164 | } | |
165 | else | |
166 | { /* from is not NULL */ | |
167 | client_p->localClient = NULL; | |
168 | client_p->preClient = NULL; | |
169 | client_p->from = from; /* 'from' of local client is self! */ | |
170 | } | |
171 | ||
172 | SetUnknown(client_p); | |
173 | strcpy(client_p->username, "unknown"); | |
174 | ||
175 | return client_p; | |
176 | } | |
177 | ||
178 | void | |
179 | free_pre_client(struct Client *client_p) | |
180 | { | |
181 | struct Blacklist *blptr; | |
182 | ||
183 | s_assert(NULL != client_p); | |
184 | ||
185 | if(client_p->preClient == NULL) | |
186 | return; | |
187 | ||
188 | blptr = client_p->preClient->dnsbl_listed; | |
189 | if (blptr != NULL) | |
190 | unref_blacklist(blptr); | |
191 | abort_blacklist_queries(client_p); | |
192 | BlockHeapFree(pclient_heap, client_p->preClient); | |
193 | client_p->preClient = NULL; | |
194 | } | |
195 | ||
196 | static void | |
197 | free_local_client(struct Client *client_p) | |
198 | { | |
199 | s_assert(NULL != client_p); | |
200 | s_assert(&me != client_p); | |
201 | ||
202 | if(client_p->localClient == NULL) | |
203 | return; | |
204 | ||
205 | /* | |
206 | * clean up extra sockets from P-lines which have been discarded. | |
207 | */ | |
208 | if(client_p->localClient->listener) | |
209 | { | |
210 | s_assert(0 < client_p->localClient->listener->ref_count); | |
211 | if(0 == --client_p->localClient->listener->ref_count | |
212 | && !client_p->localClient->listener->active) | |
213 | free_listener(client_p->localClient->listener); | |
214 | client_p->localClient->listener = 0; | |
215 | } | |
216 | ||
217 | if(client_p->localClient->fd >= 0) | |
218 | comm_close(client_p->localClient->fd); | |
219 | ||
220 | if(client_p->localClient->passwd) | |
221 | { | |
222 | memset(client_p->localClient->passwd, 0, | |
223 | strlen(client_p->localClient->passwd)); | |
224 | MyFree(client_p->localClient->passwd); | |
225 | } | |
226 | ||
227 | MyFree(client_p->localClient->challenge); | |
228 | MyFree(client_p->localClient->fullcaps); | |
229 | MyFree(client_p->localClient->opername); | |
230 | MyFree(client_p->localClient->mangledhost); | |
231 | ||
232 | BlockHeapFree(lclient_heap, client_p->localClient); | |
233 | client_p->localClient = NULL; | |
234 | } | |
235 | ||
236 | void | |
237 | free_client(struct Client *client_p) | |
238 | { | |
239 | s_assert(NULL != client_p); | |
240 | s_assert(&me != client_p); | |
241 | free_local_client(client_p); | |
242 | free_pre_client(client_p); | |
243 | BlockHeapFree(client_heap, client_p); | |
244 | } | |
245 | ||
246 | /* | |
247 | * check_pings - go through the local client list and check activity | |
248 | * kill off stuff that should die | |
249 | * | |
250 | * inputs - NOT USED (from event) | |
251 | * output - next time_t when check_pings() should be called again | |
252 | * side effects - | |
253 | * | |
254 | * | |
255 | * A PING can be sent to clients as necessary. | |
256 | * | |
257 | * Client/Server ping outs are handled. | |
258 | */ | |
259 | ||
260 | /* | |
261 | * Addon from adrian. We used to call this after nextping seconds, | |
262 | * however I've changed it to run once a second. This is only for | |
263 | * PING timeouts, not K/etc-line checks (thanks dianora!). Having it | |
264 | * run once a second makes life a lot easier - when a new client connects | |
265 | * and they need a ping in 4 seconds, if nextping was set to 20 seconds | |
266 | * we end up waiting 20 seconds. This is stupid. :-) | |
267 | * I will optimise (hah!) check_pings() once I've finished working on | |
268 | * tidying up other network IO evilnesses. | |
269 | * -- adrian | |
270 | */ | |
271 | ||
272 | static void | |
273 | check_pings(void *notused) | |
274 | { | |
275 | check_pings_list(&lclient_list); | |
276 | check_pings_list(&serv_list); | |
277 | check_unknowns_list(&unknown_list); | |
278 | } | |
279 | ||
280 | /* | |
281 | * Check_pings_list() | |
282 | * | |
283 | * inputs - pointer to list to check | |
284 | * output - NONE | |
285 | * side effects - | |
286 | */ | |
287 | static void | |
288 | check_pings_list(dlink_list * list) | |
289 | { | |
290 | char scratch[32]; /* way too generous but... */ | |
291 | struct Client *client_p; /* current local client_p being examined */ | |
292 | int ping = 0; /* ping time value from client */ | |
293 | dlink_node *ptr, *next_ptr; | |
294 | ||
295 | DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) | |
296 | { | |
297 | client_p = ptr->data; | |
298 | ||
299 | /* | |
300 | ** Note: No need to notify opers here. It's | |
301 | ** already done when "FLAGS_DEADSOCKET" is set. | |
302 | */ | |
303 | if(!MyConnect(client_p) || IsDead(client_p)) | |
304 | continue; | |
305 | ||
306 | if(IsPerson(client_p)) | |
307 | { | |
308 | if(!IsExemptKline(client_p) && | |
309 | GlobalSetOptions.idletime && | |
310 | !IsOper(client_p) && | |
311 | !IsIdlelined(client_p) && | |
312 | ((CurrentTime - client_p->localClient->last) > GlobalSetOptions.idletime)) | |
313 | { | |
314 | struct ConfItem *aconf; | |
315 | ||
316 | aconf = make_conf(); | |
317 | aconf->status = CONF_KILL; | |
318 | ||
319 | DupString(aconf->host, client_p->host); | |
320 | DupString(aconf->passwd, "idle exceeder"); | |
321 | DupString(aconf->user, client_p->username); | |
322 | aconf->port = 0; | |
323 | aconf->hold = CurrentTime + 60; | |
324 | add_temp_kline(aconf); | |
325 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
326 | "Idle time limit exceeded for %s - temp k-lining", | |
327 | get_client_name(client_p, HIDE_IP)); | |
328 | ||
329 | exit_client(client_p, client_p, &me, aconf->passwd); | |
330 | continue; | |
331 | } | |
332 | } | |
333 | ||
334 | if(!IsRegistered(client_p)) | |
335 | ping = ConfigFileEntry.connect_timeout; | |
336 | else | |
337 | ping = get_client_ping(client_p); | |
338 | ||
339 | if(ping < (CurrentTime - client_p->localClient->lasttime)) | |
340 | { | |
341 | /* | |
342 | * If the client/server hasnt talked to us in 2*ping seconds | |
343 | * and it has a ping time, then close its connection. | |
344 | */ | |
345 | if(((CurrentTime - client_p->localClient->lasttime) >= (2 * ping) | |
346 | && (client_p->flags & FLAGS_PINGSENT))) | |
347 | { | |
348 | if(IsAnyServer(client_p)) | |
349 | { | |
350 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
351 | "No response from %s, closing link", | |
352 | get_server_name(client_p, HIDE_IP)); | |
353 | ilog(L_SERVER, | |
354 | "No response from %s, closing link", | |
355 | log_client_name(client_p, HIDE_IP)); | |
356 | } | |
357 | (void) ircsnprintf(scratch, sizeof(scratch), | |
358 | "Ping timeout: %d seconds", | |
359 | (int) (CurrentTime - client_p->localClient->lasttime)); | |
360 | ||
361 | exit_client(client_p, client_p, &me, scratch); | |
362 | continue; | |
363 | } | |
364 | else if((client_p->flags & FLAGS_PINGSENT) == 0) | |
365 | { | |
366 | /* | |
367 | * if we havent PINGed the connection and we havent | |
368 | * heard from it in a while, PING it to make sure | |
369 | * it is still alive. | |
370 | */ | |
371 | client_p->flags |= FLAGS_PINGSENT; | |
372 | /* not nice but does the job */ | |
373 | client_p->localClient->lasttime = CurrentTime - ping; | |
374 | sendto_one(client_p, "PING :%s", me.name); | |
375 | } | |
376 | } | |
377 | /* ping_timeout: */ | |
378 | ||
379 | } | |
380 | } | |
381 | ||
382 | /* | |
383 | * check_unknowns_list | |
384 | * | |
385 | * inputs - pointer to list of unknown clients | |
386 | * output - NONE | |
387 | * side effects - unknown clients get marked for termination after n seconds | |
388 | */ | |
389 | static void | |
390 | check_unknowns_list(dlink_list * list) | |
391 | { | |
392 | dlink_node *ptr, *next_ptr; | |
393 | struct Client *client_p; | |
394 | ||
395 | DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) | |
396 | { | |
397 | client_p = ptr->data; | |
398 | ||
399 | if(IsDead(client_p) || IsClosing(client_p)) | |
400 | continue; | |
401 | ||
402 | /* | |
403 | * Check UNKNOWN connections - if they have been in this state | |
404 | * for > 30s, close them. | |
405 | */ | |
406 | ||
407 | if((CurrentTime - client_p->localClient->firsttime) > 30) | |
408 | exit_client(client_p, client_p, &me, "Connection timed out"); | |
409 | } | |
410 | } | |
411 | ||
412 | static void | |
413 | notify_banned_client(struct Client *client_p, struct ConfItem *aconf, int ban) | |
414 | { | |
415 | static const char conn_closed[] = "Connection closed"; | |
416 | static const char d_lined[] = "D-lined"; | |
417 | static const char k_lined[] = "K-lined"; | |
418 | static const char g_lined[] = "G-lined"; | |
419 | const char *reason = NULL; | |
420 | const char *exit_reason = conn_closed; | |
421 | ||
422 | if(ConfigFileEntry.kline_with_reason && !EmptyString(aconf->passwd)) | |
423 | { | |
424 | reason = aconf->passwd; | |
425 | exit_reason = aconf->passwd; | |
426 | } | |
427 | else | |
428 | { | |
429 | switch (aconf->status) | |
430 | { | |
431 | case D_LINED: | |
432 | reason = d_lined; | |
433 | break; | |
434 | case G_LINED: | |
435 | reason = g_lined; | |
436 | break; | |
437 | default: | |
438 | reason = k_lined; | |
439 | break; | |
440 | } | |
441 | } | |
442 | ||
443 | if(ban == D_LINED && !IsPerson(client_p)) | |
444 | sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined"); | |
445 | else | |
446 | sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP), | |
447 | me.name, client_p->name, reason); | |
448 | ||
449 | exit_client(client_p, client_p, &me, | |
450 | EmptyString(ConfigFileEntry.kline_reason) ? exit_reason : | |
451 | ConfigFileEntry.kline_reason); | |
452 | } | |
453 | ||
454 | /* | |
455 | * check_banned_lines | |
456 | * inputs - NONE | |
457 | * output - NONE | |
458 | * side effects - Check all connections for a pending k/d/gline against the | |
459 | * client, exit the client if found. | |
460 | */ | |
461 | void | |
462 | check_banned_lines(void) | |
463 | { | |
464 | struct Client *client_p; /* current local client_p being examined */ | |
465 | struct ConfItem *aconf = NULL; | |
466 | dlink_node *ptr, *next_ptr; | |
467 | ||
468 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
469 | { | |
470 | client_p = ptr->data; | |
471 | ||
472 | if(IsMe(client_p)) | |
473 | continue; | |
474 | ||
475 | /* if there is a returned struct ConfItem then kill it */ | |
476 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, client_p->localClient->ip.ss_family))) | |
477 | { | |
478 | if(aconf->status & CONF_EXEMPTDLINE) | |
479 | continue; | |
480 | ||
481 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
482 | "DLINE active for %s", | |
483 | get_client_name(client_p, HIDE_IP)); | |
484 | ||
485 | notify_banned_client(client_p, aconf, D_LINED); | |
486 | continue; /* and go examine next fd/client_p */ | |
487 | } | |
488 | ||
489 | if(!IsPerson(client_p)) | |
490 | continue; | |
491 | ||
492 | if((aconf = find_kline(client_p)) != NULL) | |
493 | { | |
494 | if(IsExemptKline(client_p)) | |
495 | { | |
496 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
497 | "KLINE over-ruled for %s, client is kline_exempt [%s@%s]", | |
498 | get_client_name(client_p, HIDE_IP), | |
499 | aconf->user, aconf->host); | |
500 | continue; | |
501 | } | |
502 | ||
503 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
504 | "KLINE active for %s", | |
505 | get_client_name(client_p, HIDE_IP)); | |
506 | notify_banned_client(client_p, aconf, K_LINED); | |
507 | continue; | |
508 | } | |
509 | else if((aconf = find_gline(client_p)) != NULL) | |
510 | { | |
511 | if(IsExemptKline(client_p)) | |
512 | { | |
513 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
514 | "GLINE over-ruled for %s, client is kline_exempt [%s@%s]", | |
515 | get_client_name(client_p, HIDE_IP), | |
516 | aconf->user, aconf->host); | |
517 | continue; | |
518 | } | |
519 | ||
520 | if(IsExemptGline(client_p)) | |
521 | { | |
522 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
523 | "GLINE over-ruled for %s, client is gline_exempt [%s@%s]", | |
524 | get_client_name(client_p, HIDE_IP), | |
525 | aconf->user, aconf->host); | |
526 | continue; | |
527 | } | |
528 | ||
529 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
530 | "GLINE active for %s", | |
531 | get_client_name(client_p, HIDE_IP)); | |
532 | ||
533 | notify_banned_client(client_p, aconf, G_LINED); | |
534 | continue; | |
535 | } | |
536 | else if((aconf = find_xline(client_p->info, 1)) != NULL) | |
537 | { | |
538 | if(IsExemptKline(client_p)) | |
539 | { | |
540 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
541 | "XLINE over-ruled for %s, client is kline_exempt [%s]", | |
542 | get_client_name(client_p, HIDE_IP), | |
543 | aconf->name); | |
544 | continue; | |
545 | } | |
546 | ||
547 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
548 | get_client_name(client_p, HIDE_IP)); | |
549 | ||
550 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
551 | continue; | |
552 | } | |
553 | } | |
554 | ||
555 | /* also check the unknowns list for new dlines */ | |
556 | DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) | |
557 | { | |
558 | client_p = ptr->data; | |
559 | ||
560 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family))) | |
561 | { | |
562 | if(aconf->status & CONF_EXEMPTDLINE) | |
563 | continue; | |
564 | ||
565 | notify_banned_client(client_p, aconf, D_LINED); | |
566 | } | |
567 | } | |
568 | ||
569 | } | |
570 | ||
571 | /* check_klines_event() | |
572 | * | |
573 | * inputs - | |
574 | * outputs - | |
575 | * side effects - check_klines() is called, kline_queued unset | |
576 | */ | |
577 | void | |
578 | check_klines_event(void *unused) | |
579 | { | |
580 | kline_queued = 0; | |
581 | check_klines(); | |
582 | } | |
583 | ||
584 | /* check_klines | |
585 | * | |
586 | * inputs - | |
587 | * outputs - | |
588 | * side effects - all clients will be checked for klines | |
589 | */ | |
590 | void | |
591 | check_klines(void) | |
592 | { | |
593 | struct Client *client_p; | |
594 | struct ConfItem *aconf; | |
595 | dlink_node *ptr; | |
596 | dlink_node *next_ptr; | |
597 | ||
598 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
599 | { | |
600 | client_p = ptr->data; | |
601 | ||
602 | if(IsMe(client_p) || !IsPerson(client_p)) | |
603 | continue; | |
604 | ||
605 | if((aconf = find_kline(client_p)) != NULL) | |
606 | { | |
607 | if(IsExemptKline(client_p)) | |
608 | { | |
609 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
610 | "KLINE over-ruled for %s, client is kline_exempt", | |
611 | get_client_name(client_p, HIDE_IP)); | |
612 | continue; | |
613 | } | |
614 | ||
615 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
616 | "KLINE active for %s", | |
617 | get_client_name(client_p, HIDE_IP)); | |
618 | ||
619 | notify_banned_client(client_p, aconf, K_LINED); | |
620 | continue; | |
621 | } | |
622 | } | |
623 | } | |
624 | ||
625 | /* check_glines() | |
626 | * | |
627 | * inputs - | |
628 | * outputs - | |
629 | * side effects - all clients will be checked for glines | |
630 | */ | |
631 | void | |
632 | check_glines(void) | |
633 | { | |
634 | struct Client *client_p; | |
635 | struct ConfItem *aconf; | |
636 | dlink_node *ptr; | |
637 | dlink_node *next_ptr; | |
638 | ||
639 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
640 | { | |
641 | client_p = ptr->data; | |
642 | ||
643 | if(IsMe(client_p) || !IsPerson(client_p)) | |
644 | continue; | |
645 | ||
646 | if((aconf = find_gline(client_p)) != NULL) | |
647 | { | |
648 | if(IsExemptKline(client_p)) | |
649 | { | |
650 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
651 | "GLINE over-ruled for %s, client is kline_exempt", | |
652 | get_client_name(client_p, HIDE_IP)); | |
653 | continue; | |
654 | } | |
655 | ||
656 | if(IsExemptGline(client_p)) | |
657 | { | |
658 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
659 | "GLINE over-ruled for %s, client is gline_exempt", | |
660 | get_client_name(client_p, HIDE_IP)); | |
661 | continue; | |
662 | } | |
663 | ||
664 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
665 | "GLINE active for %s", | |
666 | get_client_name(client_p, HIDE_IP)); | |
667 | ||
668 | notify_banned_client(client_p, aconf, K_LINED); | |
669 | continue; | |
670 | } | |
671 | } | |
672 | } | |
673 | ||
674 | /* check_dlines() | |
675 | * | |
676 | * inputs - | |
677 | * outputs - | |
678 | * side effects - all clients will be checked for dlines | |
679 | */ | |
680 | void | |
681 | check_dlines(void) | |
682 | { | |
683 | struct Client *client_p; | |
684 | struct ConfItem *aconf; | |
685 | dlink_node *ptr; | |
686 | dlink_node *next_ptr; | |
687 | ||
688 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
689 | { | |
690 | client_p = ptr->data; | |
691 | ||
692 | if(IsMe(client_p)) | |
693 | continue; | |
694 | ||
695 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) | |
696 | { | |
697 | if(aconf->status & CONF_EXEMPTDLINE) | |
698 | continue; | |
699 | ||
700 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
701 | "DLINE active for %s", | |
702 | get_client_name(client_p, HIDE_IP)); | |
703 | ||
704 | notify_banned_client(client_p, aconf, D_LINED); | |
705 | continue; | |
706 | } | |
707 | } | |
708 | ||
709 | /* dlines need to be checked against unknowns too */ | |
710 | DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) | |
711 | { | |
712 | client_p = ptr->data; | |
713 | ||
714 | if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip,client_p->localClient->ip.ss_family)) != NULL) | |
715 | { | |
716 | if(aconf->status & CONF_EXEMPTDLINE) | |
717 | continue; | |
718 | ||
719 | notify_banned_client(client_p, aconf, D_LINED); | |
720 | } | |
721 | } | |
722 | } | |
723 | ||
724 | /* check_xlines | |
725 | * | |
726 | * inputs - | |
727 | * outputs - | |
728 | * side effects - all clients will be checked for xlines | |
729 | */ | |
730 | void | |
731 | check_xlines(void) | |
732 | { | |
733 | struct Client *client_p; | |
734 | struct ConfItem *aconf; | |
735 | dlink_node *ptr; | |
736 | dlink_node *next_ptr; | |
737 | ||
738 | DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head) | |
739 | { | |
740 | client_p = ptr->data; | |
741 | ||
742 | if(IsMe(client_p) || !IsPerson(client_p)) | |
743 | continue; | |
744 | ||
745 | if((aconf = find_xline(client_p->info, 1)) != NULL) | |
746 | { | |
747 | if(IsExemptKline(client_p)) | |
748 | { | |
749 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
750 | "XLINE over-ruled for %s, client is kline_exempt", | |
751 | get_client_name(client_p, HIDE_IP)); | |
752 | continue; | |
753 | } | |
754 | ||
755 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s", | |
756 | get_client_name(client_p, HIDE_IP)); | |
757 | ||
758 | (void) exit_client(client_p, client_p, &me, "Bad user info"); | |
759 | continue; | |
760 | } | |
761 | } | |
762 | } | |
763 | ||
764 | /* | |
765 | * update_client_exit_stats | |
766 | * | |
767 | * input - pointer to client | |
768 | * output - NONE | |
769 | * side effects - | |
770 | */ | |
771 | static void | |
772 | update_client_exit_stats(struct Client *client_p) | |
773 | { | |
774 | if(IsServer(client_p)) | |
775 | { | |
776 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
777 | "Server %s split from %s", | |
778 | client_p->name, client_p->servptr->name); | |
779 | if(HasSentEob(client_p)) | |
780 | eob_count--; | |
781 | } | |
782 | else if(IsClient(client_p)) | |
783 | { | |
784 | --Count.total; | |
785 | if(IsOper(client_p)) | |
786 | --Count.oper; | |
787 | if(IsInvisible(client_p)) | |
788 | --Count.invisi; | |
789 | } | |
790 | ||
791 | if(splitchecking && !splitmode) | |
792 | check_splitmode(NULL); | |
793 | } | |
794 | ||
795 | /* | |
796 | * release_client_state | |
797 | * | |
798 | * input - pointer to client to release | |
799 | * output - NONE | |
800 | * side effects - | |
801 | */ | |
802 | static void | |
803 | release_client_state(struct Client *client_p) | |
804 | { | |
805 | if(client_p->user != NULL) | |
806 | { | |
807 | free_user(client_p->user, client_p); /* try this here */ | |
808 | } | |
809 | if(client_p->serv) | |
810 | { | |
811 | if(client_p->serv->user != NULL) | |
812 | free_user(client_p->serv->user, client_p); | |
813 | if(client_p->serv->fullcaps) | |
814 | MyFree(client_p->serv->fullcaps); | |
815 | MyFree(client_p->serv); | |
816 | } | |
817 | } | |
818 | ||
819 | /* | |
820 | * remove_client_from_list | |
821 | * inputs - point to client to remove | |
822 | * output - NONE | |
823 | * side effects - taken the code from ExitOneClient() for this | |
824 | * and placed it here. - avalon | |
825 | */ | |
826 | static void | |
827 | remove_client_from_list(struct Client *client_p) | |
828 | { | |
829 | s_assert(NULL != client_p); | |
830 | ||
831 | if(client_p == NULL) | |
832 | return; | |
833 | ||
834 | /* A client made with make_client() | |
835 | * is on the unknown_list until removed. | |
836 | * If it =does= happen to exit before its removed from that list | |
837 | * and its =not= on the global_client_list, it will core here. | |
838 | * short circuit that case now -db | |
839 | */ | |
840 | if(client_p->node.prev == NULL && client_p->node.next == NULL) | |
841 | return; | |
842 | ||
843 | dlinkDelete(&client_p->node, &global_client_list); | |
844 | ||
845 | update_client_exit_stats(client_p); | |
846 | } | |
847 | ||
848 | ||
849 | /* | |
850 | * find_person - find person by (nick)name. | |
851 | * inputs - pointer to name | |
852 | * output - return client pointer | |
853 | * side effects - | |
854 | */ | |
855 | struct Client * | |
856 | find_person(const char *name) | |
857 | { | |
858 | struct Client *c2ptr; | |
859 | ||
860 | c2ptr = find_client(name); | |
861 | ||
862 | if(c2ptr && IsPerson(c2ptr)) | |
863 | return (c2ptr); | |
864 | return (NULL); | |
865 | } | |
866 | ||
867 | struct Client * | |
868 | find_named_person(const char *name) | |
869 | { | |
870 | struct Client *c2ptr; | |
871 | ||
872 | c2ptr = find_named_client(name); | |
873 | ||
874 | if(c2ptr && IsPerson(c2ptr)) | |
875 | return (c2ptr); | |
876 | return (NULL); | |
877 | } | |
878 | ||
879 | ||
880 | /* | |
881 | * find_chasing - find the client structure for a nick name (user) | |
882 | * using history mechanism if necessary. If the client is not found, | |
883 | * an error message (NO SUCH NICK) is generated. If the client was found | |
884 | * through the history, chasing will be 1 and otherwise 0. | |
885 | */ | |
886 | struct Client * | |
887 | find_chasing(struct Client *source_p, const char *user, int *chasing) | |
888 | { | |
889 | struct Client *who; | |
890 | ||
891 | if(MyClient(source_p)) | |
892 | who = find_named_person(user); | |
893 | else | |
894 | who = find_person(user); | |
895 | ||
896 | if(chasing) | |
897 | *chasing = 0; | |
898 | ||
899 | if(who || IsDigit(*user)) | |
900 | return who; | |
901 | ||
902 | if(!(who = get_history(user, (long) KILLCHASETIMELIMIT))) | |
903 | { | |
904 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
905 | form_str(ERR_NOSUCHNICK), user); | |
906 | return (NULL); | |
907 | } | |
908 | if(chasing) | |
909 | *chasing = 1; | |
910 | return who; | |
911 | } | |
912 | ||
913 | /* | |
914 | * get_client_name - Return the name of the client | |
915 | * for various tracking and | |
916 | * admin purposes. The main purpose of this function is to | |
917 | * return the "socket host" name of the client, if that | |
918 | * differs from the advertised name (other than case). | |
919 | * But, this can be used to any client structure. | |
920 | * | |
921 | * NOTE 1: | |
922 | * Watch out the allocation of "nbuf", if either source_p->name | |
923 | * or source_p->sockhost gets changed into pointers instead of | |
924 | * directly allocated within the structure... | |
925 | * | |
926 | * NOTE 2: | |
927 | * Function return either a pointer to the structure (source_p) or | |
928 | * to internal buffer (nbuf). *NEVER* use the returned pointer | |
929 | * to modify what it points!!! | |
930 | */ | |
931 | ||
932 | const char * | |
933 | get_client_name(struct Client *client, int showip) | |
934 | { | |
935 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
936 | ||
937 | s_assert(NULL != client); | |
938 | if(client == NULL) | |
939 | return NULL; | |
940 | ||
941 | if(MyConnect(client)) | |
942 | { | |
943 | if(!irccmp(client->name, client->host)) | |
944 | return client->name; | |
945 | ||
946 | if(ConfigFileEntry.hide_spoof_ips && | |
947 | showip == SHOW_IP && IsIPSpoof(client)) | |
948 | showip = MASK_IP; | |
949 | #ifdef HIDE_SERVERS_IPS | |
950 | if(IsAnyServer(client)) | |
951 | showip = MASK_IP; | |
952 | #endif | |
953 | ||
954 | /* And finally, let's get the host information, ip or name */ | |
955 | switch (showip) | |
956 | { | |
957 | case SHOW_IP: | |
958 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
959 | client->name, client->username, | |
960 | client->sockhost); | |
961 | break; | |
962 | case MASK_IP: | |
963 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
964 | client->name, client->username); | |
965 | break; | |
966 | default: | |
967 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
968 | client->name, client->username, client->host); | |
969 | } | |
970 | return nbuf; | |
971 | } | |
972 | ||
973 | /* As pointed out by Adel Mezibra | |
974 | * Neph|l|m@EFnet. Was missing a return here. | |
975 | */ | |
976 | return client->name; | |
977 | } | |
978 | ||
979 | const char * | |
980 | get_server_name(struct Client *target_p, int showip) | |
981 | { | |
982 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
983 | ||
984 | if(target_p == NULL) | |
985 | return NULL; | |
986 | ||
987 | if(!MyConnect(target_p) || !irccmp(target_p->name, target_p->host)) | |
988 | return target_p->name; | |
989 | ||
990 | #ifdef HIDE_SERVERS_IPS | |
991 | if(EmptyString(target_p->name)) | |
992 | { | |
993 | ircsnprintf(nbuf, sizeof(nbuf), "[%s@255.255.255.255]", | |
994 | target_p->username); | |
995 | return nbuf; | |
996 | } | |
997 | else | |
998 | return target_p->name; | |
999 | #endif | |
1000 | ||
1001 | switch (showip) | |
1002 | { | |
1003 | case SHOW_IP: | |
1004 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
1005 | target_p->name, target_p->username, | |
1006 | target_p->sockhost); | |
1007 | break; | |
1008 | ||
1009 | case MASK_IP: | |
1010 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
1011 | target_p->name, target_p->username); | |
1012 | ||
1013 | default: | |
1014 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", | |
1015 | target_p->name, target_p->username, | |
1016 | target_p->host); | |
1017 | } | |
1018 | ||
1019 | return nbuf; | |
1020 | } | |
1021 | ||
1022 | /* log_client_name() | |
1023 | * | |
1024 | * This version is the same as get_client_name, but doesnt contain the | |
1025 | * code that will hide IPs always. This should be used for logfiles. | |
1026 | */ | |
1027 | const char * | |
1028 | log_client_name(struct Client *target_p, int showip) | |
1029 | { | |
1030 | static char nbuf[HOSTLEN * 2 + USERLEN + 5]; | |
1031 | ||
1032 | if(target_p == NULL) | |
1033 | return NULL; | |
1034 | ||
1035 | if(MyConnect(target_p)) | |
1036 | { | |
1037 | if(irccmp(target_p->name, target_p->host) == 0) | |
1038 | return target_p->name; | |
1039 | ||
1040 | switch (showip) | |
1041 | { | |
1042 | case SHOW_IP: | |
1043 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, | |
1044 | target_p->username, target_p->sockhost); | |
1045 | break; | |
1046 | ||
1047 | case MASK_IP: | |
1048 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]", | |
1049 | target_p->name, target_p->username); | |
1050 | ||
1051 | default: | |
1052 | ircsnprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name, | |
1053 | target_p->username, target_p->host); | |
1054 | } | |
1055 | ||
1056 | return nbuf; | |
1057 | } | |
1058 | ||
1059 | return target_p->name; | |
1060 | } | |
1061 | ||
1062 | /* is_remote_connect - Returns whether a server was /connect'ed by a remote | |
1063 | * oper (send notices netwide) */ | |
1064 | int | |
1065 | is_remote_connect(struct Client *client_p) | |
1066 | { | |
1067 | struct Client *oper; | |
1068 | ||
1069 | if (client_p->serv == NULL) | |
1070 | return FALSE; | |
1071 | oper = find_named_person(client_p->serv->by); | |
1072 | return oper != NULL && IsOper(oper) && !MyConnect(oper); | |
1073 | } | |
1074 | ||
1075 | static void | |
1076 | free_exited_clients(void *unused) | |
1077 | { | |
1078 | dlink_node *ptr, *next; | |
1079 | struct Client *target_p; | |
1080 | ||
1081 | DLINK_FOREACH_SAFE(ptr, next, dead_list.head) | |
1082 | { | |
1083 | target_p = ptr->data; | |
1084 | ||
1085 | #ifdef DEBUG_EXITED_CLIENTS | |
1086 | { | |
1087 | struct abort_client *abt; | |
1088 | dlink_node *aptr; | |
1089 | int found = 0; | |
1090 | ||
1091 | DLINK_FOREACH(aptr, abort_list.head) | |
1092 | { | |
1093 | abt = aptr->data; | |
1094 | if(abt->client == target_p) | |
1095 | { | |
1096 | s_assert(0); | |
1097 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1098 | "On abort_list: %s stat: %u flags: %u/%u handler: %c", | |
1099 | target_p->name, (unsigned int) target_p->status, | |
1100 | target_p->flags, target_p->flags2, target_p->handler); | |
1101 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1102 | "Please report this to the ratbox developers!"); | |
1103 | found++; | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | if(found) | |
1108 | { | |
1109 | dlinkDestroy(ptr, &dead_list); | |
1110 | continue; | |
1111 | } | |
1112 | } | |
1113 | #endif | |
1114 | ||
1115 | if(ptr->data == NULL) | |
1116 | { | |
1117 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1118 | "Warning: null client on dead_list!"); | |
1119 | dlinkDestroy(ptr, &dead_list); | |
1120 | continue; | |
1121 | } | |
1122 | release_client_state(target_p); | |
1123 | free_client(target_p); | |
1124 | dlinkDestroy(ptr, &dead_list); | |
1125 | } | |
1126 | ||
1127 | #ifdef DEBUG_EXITED_CLIENTS | |
1128 | DLINK_FOREACH_SAFE(ptr, next, dead_remote_list.head) | |
1129 | { | |
1130 | target_p = ptr->data; | |
1131 | ||
1132 | if(ptr->data == NULL) | |
1133 | { | |
1134 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1135 | "Warning: null client on dead_list!"); | |
1136 | dlinkDestroy(ptr, &dead_list); | |
1137 | continue; | |
1138 | } | |
1139 | release_client_state(target_p); | |
1140 | free_client(target_p); | |
1141 | dlinkDestroy(ptr, &dead_remote_list); | |
1142 | } | |
1143 | #endif | |
1144 | ||
1145 | } | |
1146 | ||
1147 | /* | |
1148 | ** Recursively send QUITs and SQUITs for source_p and all its dependent clients | |
1149 | ** and servers to those servers that need them. A server needs the client | |
1150 | ** QUITs if it can't figure them out from the SQUIT (ie pre-TS4) or if it | |
1151 | ** isn't getting the SQUIT because of @#(*&@)# hostmasking. With TS4, once | |
1152 | ** a link gets a SQUIT, it doesn't need any QUIT/SQUITs for clients depending | |
1153 | ** on that one -orabidoo | |
1154 | */ | |
1155 | static void | |
1156 | recurse_send_quits(struct Client *client_p, struct Client *source_p, | |
1157 | struct Client *to, const char *comment1, | |
1158 | const char *comment) | |
1159 | { | |
1160 | struct Client *target_p; | |
1161 | dlink_node *ptr, *ptr_next; | |
1162 | /* If this server can handle quit storm (QS) removal | |
1163 | * of dependents, just send the SQUIT | |
1164 | */ | |
1165 | ||
1166 | if(IsCapable(to, CAP_QS)) | |
1167 | { | |
1168 | sendto_one(to, "SQUIT %s :%s", | |
1169 | get_id(source_p, to), comment); | |
1170 | } | |
1171 | else | |
1172 | { | |
1173 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1174 | { | |
1175 | target_p = ptr->data; | |
1176 | sendto_one(to, ":%s QUIT :%s", target_p->name, comment1); | |
1177 | } | |
1178 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) | |
1179 | { | |
1180 | target_p = ptr->data; | |
1181 | recurse_send_quits(client_p, target_p, to, comment1, comment); | |
1182 | } | |
1183 | sendto_one(to, "SQUIT %s :%s", source_p->name, comment); | |
1184 | } | |
1185 | } | |
1186 | ||
1187 | /* | |
1188 | ** Remove all clients that depend on source_p; assumes all (S)QUITs have | |
1189 | ** already been sent. we make sure to exit a server's dependent clients | |
1190 | ** and servers before the server itself; exit_one_client takes care of | |
1191 | ** actually removing things off llists. tweaked from +CSr31 -orabidoo | |
1192 | */ | |
1193 | /* | |
1194 | * added sanity test code.... source_p->serv might be NULL... | |
1195 | */ | |
1196 | static void | |
1197 | recurse_remove_clients(struct Client *source_p, const char *comment) | |
1198 | { | |
1199 | struct Client *target_p; | |
1200 | dlink_node *ptr, *ptr_next; | |
1201 | ||
1202 | if(IsMe(source_p)) | |
1203 | return; | |
1204 | ||
1205 | if(source_p->serv == NULL) /* oooops. uh this is actually a major bug */ | |
1206 | return; | |
1207 | ||
1208 | /* this is very ugly, but it saves cpu :P */ | |
1209 | if(ConfigFileEntry.nick_delay > 0) | |
1210 | { | |
1211 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1212 | { | |
1213 | target_p = ptr->data; | |
1214 | target_p->flags |= FLAGS_KILLED; | |
1215 | add_nd_entry(target_p->name); | |
1216 | ||
1217 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1218 | exit_remote_client(NULL, target_p, &me, comment); | |
1219 | } | |
1220 | } | |
1221 | else | |
1222 | { | |
1223 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head) | |
1224 | { | |
1225 | target_p = ptr->data; | |
1226 | target_p->flags |= FLAGS_KILLED; | |
1227 | ||
1228 | if(!IsDead(target_p) && !IsClosing(target_p)) | |
1229 | exit_remote_client(NULL, target_p, &me, comment); | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head) | |
1234 | { | |
1235 | target_p = ptr->data; | |
1236 | recurse_remove_clients(target_p, comment); | |
1237 | qs_server(NULL, target_p, &me, comment); | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | /* | |
1242 | ** Remove *everything* that depends on source_p, from all lists, and sending | |
1243 | ** all necessary QUITs and SQUITs. source_p itself is still on the lists, | |
1244 | ** and its SQUITs have been sent except for the upstream one -orabidoo | |
1245 | */ | |
1246 | static void | |
1247 | remove_dependents(struct Client *client_p, | |
1248 | struct Client *source_p, | |
1249 | struct Client *from, const char *comment, const char *comment1) | |
1250 | { | |
1251 | struct Client *to; | |
1252 | dlink_node *ptr, *next; | |
1253 | ||
1254 | DLINK_FOREACH_SAFE(ptr, next, serv_list.head) | |
1255 | { | |
1256 | to = ptr->data; | |
1257 | ||
1258 | if(IsMe(to) || to == source_p->from || | |
1259 | (to == client_p && IsCapable(to, CAP_QS))) | |
1260 | continue; | |
1261 | ||
1262 | recurse_send_quits(client_p, source_p, to, comment1, comment); | |
1263 | } | |
1264 | ||
1265 | recurse_remove_clients(source_p, comment1); | |
1266 | } | |
1267 | ||
1268 | void | |
1269 | exit_aborted_clients(void *unused) | |
1270 | { | |
1271 | struct abort_client *abt; | |
1272 | dlink_node *ptr, *next; | |
1273 | DLINK_FOREACH_SAFE(ptr, next, abort_list.head) | |
1274 | { | |
1275 | abt = ptr->data; | |
1276 | ||
1277 | #ifdef DEBUG_EXITED_CLIENTS | |
1278 | { | |
1279 | if(dlinkFind(abt->client, &dead_list)) | |
1280 | { | |
1281 | s_assert(0); | |
1282 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1283 | "On dead_list: %s stat: %u flags: %u/%u handler: %c", | |
1284 | abt->client->name, (unsigned int) abt->client->status, | |
1285 | abt->client->flags, abt->client->flags2, abt->client->handler); | |
1286 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1287 | "Please report this to the ratbox developers!"); | |
1288 | continue; | |
1289 | } | |
1290 | } | |
1291 | #endif | |
1292 | ||
1293 | s_assert(*((unsigned long*)abt->client) != 0xdeadbeef); /* This is lame but its a debug thing */ | |
1294 | dlinkDelete(ptr, &abort_list); | |
1295 | ||
1296 | if(IsAnyServer(abt->client)) | |
1297 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1298 | "Closing link to %s: %s", | |
1299 | get_server_name(abt->client, HIDE_IP), abt->notice); | |
1300 | ||
1301 | /* its no longer on abort list - we *must* remove | |
1302 | * FLAGS_CLOSING otherwise exit_client() will not run --fl | |
1303 | */ | |
1304 | abt->client->flags &= ~FLAGS_CLOSING; | |
1305 | exit_client(abt->client, abt->client, &me, abt->notice); | |
1306 | MyFree(abt); | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | ||
1311 | /* | |
1312 | * dead_link - Adds client to a list of clients that need an exit_client() | |
1313 | * | |
1314 | */ | |
1315 | void | |
1316 | dead_link(struct Client *client_p) | |
1317 | { | |
1318 | struct abort_client *abt; | |
1319 | ||
1320 | s_assert(!IsMe(client_p)); | |
1321 | if(IsDead(client_p) || IsClosing(client_p) || IsMe(client_p)) | |
1322 | return; | |
1323 | ||
1324 | abt = (struct abort_client *) MyMalloc(sizeof(struct abort_client)); | |
1325 | ||
1326 | if(client_p->flags & FLAGS_SENDQEX) | |
1327 | strlcpy(abt->notice, "Max SendQ exceeded", sizeof(abt->notice)); | |
1328 | else | |
1329 | ircsnprintf(abt->notice, sizeof(abt->notice), "Write error: %s", strerror(errno)); | |
1330 | ||
1331 | abt->client = client_p; | |
1332 | SetIOError(client_p); | |
1333 | SetDead(client_p); | |
1334 | SetClosing(client_p); | |
1335 | dlinkAdd(abt, &abt->node, &abort_list); | |
1336 | } | |
1337 | ||
1338 | ||
1339 | /* This does the remove of the user from channels..local or remote */ | |
1340 | static inline void | |
1341 | exit_generic_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1342 | const char *comment) | |
1343 | { | |
1344 | dlink_node *ptr, *next_ptr; | |
1345 | ||
1346 | if(IsOper(source_p)) | |
1347 | dlinkFindDestroy(source_p, &oper_list); | |
1348 | ||
1349 | sendto_common_channels_local(source_p, ":%s!%s@%s QUIT :%s", | |
1350 | source_p->name, | |
1351 | source_p->username, source_p->host, comment); | |
1352 | ||
1353 | remove_user_from_channels(source_p); | |
1354 | ||
1355 | /* Should not be in any channels now */ | |
1356 | s_assert(source_p->user->channel.head == NULL); | |
1357 | ||
1358 | /* Clean up invitefield */ | |
1359 | DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->user->invited.head) | |
1360 | { | |
1361 | del_invite(ptr->data, source_p); | |
1362 | } | |
1363 | ||
1364 | /* Clean up allow lists */ | |
1365 | del_all_accepts(source_p); | |
1366 | ||
1367 | add_history(source_p, 0); | |
1368 | off_history(source_p); | |
1369 | ||
1370 | monitor_signoff(source_p); | |
1371 | ||
1372 | if(has_id(source_p)) | |
1373 | del_from_id_hash(source_p->id, source_p); | |
1374 | ||
1375 | del_from_hostname_hash(source_p->orighost, source_p); | |
1376 | del_from_client_hash(source_p->name, source_p); | |
1377 | remove_client_from_list(source_p); | |
1378 | } | |
1379 | ||
1380 | /* | |
1381 | * Assumes IsPerson(source_p) && !MyConnect(source_p) | |
1382 | */ | |
1383 | ||
1384 | static int | |
1385 | exit_remote_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1386 | const char *comment) | |
1387 | { | |
1388 | exit_generic_client(client_p, source_p, from, comment); | |
1389 | ||
1390 | if(source_p->servptr && source_p->servptr->serv) | |
1391 | { | |
1392 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users); | |
1393 | } | |
1394 | ||
1395 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1396 | { | |
1397 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1398 | ":%s QUIT :%s", use_id(source_p), comment); | |
1399 | sendto_server(client_p, NULL, NOCAPS, CAP_TS6, | |
1400 | ":%s QUIT :%s", source_p->name, comment); | |
1401 | } | |
1402 | ||
1403 | SetDead(source_p); | |
1404 | #ifdef DEBUG_EXITED_CLIENTS | |
1405 | dlinkAddAlloc(source_p, &dead_remote_list); | |
1406 | #else | |
1407 | dlinkAddAlloc(source_p, &dead_list); | |
1408 | #endif | |
1409 | return(CLIENT_EXITED); | |
1410 | } | |
1411 | ||
1412 | /* | |
1413 | * This assumes IsUnknown(source_p) == TRUE and MyConnect(source_p) == TRUE | |
1414 | */ | |
1415 | ||
1416 | static int | |
1417 | exit_unknown_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1418 | const char *comment) | |
1419 | { | |
1420 | delete_auth_queries(source_p); | |
1421 | client_flush_input(source_p); | |
1422 | dlinkDelete(&source_p->localClient->tnode, &unknown_list); | |
1423 | ||
1424 | if(!IsIOError(source_p)) | |
dd12a19c JT |
1425 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", |
1426 | source_p->user != NULL ? source_p->host : "127.0.0.1", | |
1427 | comment); | |
212380e3 AC |
1428 | |
1429 | close_connection(source_p); | |
1430 | ||
1431 | if(has_id(source_p)) | |
1432 | del_from_id_hash(source_p->id, source_p); | |
1433 | ||
1434 | del_from_hostname_hash(source_p->host, source_p); | |
1435 | del_from_client_hash(source_p->name, source_p); | |
1436 | remove_client_from_list(source_p); | |
1437 | free_pre_client(source_p); | |
1438 | SetDead(source_p); | |
1439 | dlinkAddAlloc(source_p, &dead_list); | |
1440 | ||
1441 | /* Note that we don't need to add unknowns to the dead_list */ | |
1442 | return(CLIENT_EXITED); | |
1443 | } | |
1444 | ||
1445 | static int | |
1446 | exit_remote_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1447 | const char *comment) | |
1448 | { | |
1449 | static char comment1[(HOSTLEN*2)+2]; | |
1450 | static char newcomment[BUFSIZE]; | |
1451 | struct Client *target_p; | |
1452 | ||
1453 | if(ConfigServerHide.flatten_links) | |
1454 | strcpy(comment1, "*.net *.split"); | |
1455 | else | |
1456 | { | |
1457 | if((source_p->serv) && (source_p->serv->up)) | |
1458 | strcpy(comment1, source_p->serv->up); | |
1459 | else | |
1460 | strcpy(comment1, "<Unknown>"); | |
1461 | ||
1462 | strcat(comment1, " "); | |
1463 | strcat(comment1, source_p->name); | |
1464 | } | |
1465 | if (IsPerson(from)) | |
1466 | ircsnprintf(newcomment, sizeof(newcomment), "by %s: %s", | |
1467 | from->name, comment); | |
1468 | ||
1469 | if(source_p->serv != NULL) | |
1470 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1471 | ||
1472 | if(source_p->servptr && source_p->servptr->serv) | |
1473 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1474 | else | |
1475 | s_assert(0); | |
1476 | ||
1477 | dlinkFindDestroy(source_p, &global_serv_list); | |
1478 | target_p = source_p->from; | |
1479 | ||
1480 | if(target_p != NULL && IsServer(target_p) && target_p != client_p && | |
1481 | !IsMe(target_p) && (source_p->flags & FLAGS_KILLED) == 0) | |
1482 | { | |
1483 | sendto_one(target_p, ":%s SQUIT %s :%s", | |
1484 | get_id(from, target_p), get_id(source_p, target_p), | |
1485 | comment); | |
1486 | } | |
1487 | ||
1488 | if(has_id(source_p)) | |
1489 | del_from_id_hash(source_p->id, source_p); | |
1490 | ||
1491 | del_from_client_hash(source_p->name, source_p); | |
1492 | remove_client_from_list(source_p); | |
1493 | ||
1494 | SetDead(source_p); | |
1495 | #ifdef DEBUG_EXITED_CLIENTS | |
1496 | dlinkAddAlloc(source_p, &dead_remote_list); | |
1497 | #else | |
1498 | dlinkAddAlloc(source_p, &dead_list); | |
1499 | #endif | |
1500 | return 0; | |
1501 | } | |
1502 | ||
1503 | static int | |
1504 | qs_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1505 | const char *comment) | |
1506 | { | |
1507 | struct Client *target_p; | |
1508 | ||
1509 | if(source_p->servptr && source_p->servptr->serv) | |
1510 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1511 | else | |
1512 | s_assert(0); | |
1513 | ||
1514 | dlinkFindDestroy(source_p, &global_serv_list); | |
1515 | target_p = source_p->from; | |
1516 | ||
1517 | if(has_id(source_p)) | |
1518 | del_from_id_hash(source_p->id, source_p); | |
1519 | ||
1520 | del_from_client_hash(source_p->name, source_p); | |
1521 | remove_client_from_list(source_p); | |
1522 | ||
1523 | SetDead(source_p); | |
1524 | dlinkAddAlloc(source_p, &dead_list); | |
1525 | return 0; | |
1526 | } | |
1527 | ||
1528 | static int | |
1529 | exit_local_server(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1530 | const char *comment) | |
1531 | { | |
1532 | static char comment1[(HOSTLEN*2)+2]; | |
1533 | static char newcomment[BUFSIZE]; | |
1534 | unsigned int sendk, recvk; | |
1535 | ||
1536 | dlinkDelete(&source_p->localClient->tnode, &serv_list); | |
1537 | dlinkFindDestroy(source_p, &global_serv_list); | |
1538 | ||
1539 | unset_chcap_usage_counts(source_p); | |
1540 | sendk = source_p->localClient->sendK; | |
1541 | recvk = source_p->localClient->receiveK; | |
1542 | ||
1543 | /* Always show source here, so the server notices show | |
1544 | * which side initiated the split -- jilles | |
1545 | */ | |
1546 | ircsnprintf(newcomment, sizeof(newcomment), "by %s: %s", | |
1547 | from == source_p ? me.name : from->name, comment); | |
1548 | if (!IsIOError(source_p)) | |
1549 | sendto_one(source_p, "SQUIT %s :%s", use_id(source_p), | |
1550 | newcomment); | |
1551 | if(client_p != NULL && source_p != client_p && !IsIOError(source_p)) | |
1552 | { | |
1553 | sendto_one(source_p, "ERROR :Closing Link: 127.0.0.1 %s (%s)", | |
1554 | source_p->name, comment); | |
1555 | } | |
1556 | ||
1557 | if(source_p->localClient->ctrlfd >= 0) | |
1558 | { | |
1559 | comm_close(source_p->localClient->ctrlfd); | |
1560 | source_p->localClient->ctrlfd = -1; | |
1561 | } | |
1562 | ||
1563 | if(source_p->servptr && source_p->servptr->serv) | |
1564 | dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); | |
1565 | else | |
1566 | s_assert(0); | |
1567 | ||
1568 | ||
1569 | close_connection(source_p); | |
1570 | ||
1571 | if(ConfigServerHide.flatten_links) | |
1572 | strcpy(comment1, "*.net *.split"); | |
1573 | else | |
1574 | { | |
1575 | if((source_p->serv) && (source_p->serv->up)) | |
1576 | strcpy(comment1, source_p->serv->up); | |
1577 | else | |
1578 | strcpy(comment1, "<Unknown>"); | |
1579 | ||
1580 | strcat(comment1, " "); | |
1581 | strcat(comment1, source_p->name); | |
1582 | } | |
1583 | ||
1584 | if(source_p->serv != NULL) | |
1585 | remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1); | |
1586 | ||
1587 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s was connected" | |
1588 | " for %ld seconds. %d/%d sendK/recvK.", | |
1589 | source_p->name, CurrentTime - source_p->localClient->firsttime, sendk, recvk); | |
1590 | ||
1591 | ilog(L_SERVER, "%s was connected for %ld seconds. %d/%d sendK/recvK.", | |
1592 | source_p->name, CurrentTime - source_p->localClient->firsttime, sendk, recvk); | |
1593 | ||
1594 | if(has_id(source_p)) | |
1595 | del_from_id_hash(source_p->id, source_p); | |
1596 | ||
1597 | del_from_client_hash(source_p->name, source_p); | |
1598 | remove_client_from_list(source_p); | |
1599 | ||
1600 | SetDead(source_p); | |
1601 | dlinkAddAlloc(source_p, &dead_list); | |
1602 | return 0; | |
1603 | } | |
1604 | ||
1605 | ||
1606 | /* | |
1607 | * This assumes IsPerson(source_p) == TRUE && MyConnect(source_p) == TRUE | |
1608 | */ | |
1609 | ||
1610 | static int | |
1611 | exit_local_client(struct Client *client_p, struct Client *source_p, struct Client *from, | |
1612 | const char *comment) | |
1613 | { | |
1614 | unsigned long on_for; | |
1615 | ||
1616 | exit_generic_client(client_p, source_p, from, comment); | |
1617 | clear_monitor(source_p); | |
1618 | ||
1619 | s_assert(IsPerson(source_p)); | |
1620 | client_flush_input(source_p); | |
1621 | dlinkDelete(&source_p->localClient->tnode, &lclient_list); | |
1622 | dlinkDelete(&source_p->lnode, &me.serv->users); | |
1623 | ||
1624 | if(IsOper(source_p)) | |
1625 | dlinkFindDestroy(source_p, &local_oper_list); | |
1626 | ||
1627 | sendto_realops_snomask(SNO_CCONN, L_ALL, | |
1628 | "Client exiting: %s (%s@%s) [%s] [%s]", | |
1629 | source_p->name, | |
1630 | source_p->username, source_p->host, comment, | |
1631 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255"); | |
1632 | ||
1633 | sendto_realops_snomask(SNO_CCONNEXT, L_ALL, | |
1634 | "CLIEXIT %s %s %s %s 0 %s", | |
1635 | source_p->name, source_p->username, source_p->host, | |
1636 | show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255", | |
1637 | comment); | |
1638 | ||
1639 | on_for = CurrentTime - source_p->localClient->firsttime; | |
1640 | ||
1641 | ilog(L_USER, "%s (%3lu:%02lu:%02lu): %s!%s@%s %d/%d", | |
1642 | myctime(CurrentTime), on_for / 3600, | |
1643 | (on_for % 3600) / 60, on_for % 60, | |
1644 | source_p->name, source_p->username, source_p->host, | |
1645 | source_p->localClient->sendK, source_p->localClient->receiveK); | |
1646 | ||
1647 | sendto_one(source_p, "ERROR :Closing Link: %s (%s)", source_p->host, comment); | |
1648 | close_connection(source_p); | |
1649 | ||
1650 | if((source_p->flags & FLAGS_KILLED) == 0) | |
1651 | { | |
1652 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
1653 | ":%s QUIT :%s", use_id(source_p), comment); | |
1654 | sendto_server(client_p, NULL, NOCAPS, CAP_TS6, | |
1655 | ":%s QUIT :%s", source_p->name, comment); | |
1656 | } | |
1657 | ||
1658 | SetDead(source_p); | |
1659 | dlinkAddAlloc(source_p, &dead_list); | |
1660 | return(CLIENT_EXITED); | |
1661 | } | |
1662 | ||
1663 | ||
1664 | /* | |
1665 | ** exit_client - This is old "m_bye". Name changed, because this is not a | |
1666 | ** protocol function, but a general server utility function. | |
1667 | ** | |
1668 | ** This function exits a client of *any* type (user, server, etc) | |
1669 | ** from this server. Also, this generates all necessary prototol | |
1670 | ** messages that this exit may cause. | |
1671 | ** | |
1672 | ** 1) If the client is a local client, then this implicitly | |
1673 | ** exits all other clients depending on this connection (e.g. | |
1674 | ** remote clients having 'from'-field that points to this. | |
1675 | ** | |
1676 | ** 2) If the client is a remote client, then only this is exited. | |
1677 | ** | |
1678 | ** For convenience, this function returns a suitable value for | |
1679 | ** m_function return value: | |
1680 | ** | |
1681 | ** CLIENT_EXITED if (client_p == source_p) | |
1682 | ** 0 if (client_p != source_p) | |
1683 | */ | |
1684 | int | |
1685 | exit_client(struct Client *client_p, /* The local client originating the | |
1686 | * exit or NULL, if this exit is | |
1687 | * generated by this server for | |
1688 | * internal reasons. | |
1689 | * This will not get any of the | |
1690 | * generated messages. */ | |
1691 | struct Client *source_p, /* Client exiting */ | |
1692 | struct Client *from, /* Client firing off this Exit, | |
1693 | * never NULL! */ | |
1694 | const char *comment /* Reason for the exit */ | |
1695 | ) | |
1696 | { | |
1697 | hook_data_client_exit hdata; | |
1698 | if(IsClosing(source_p)) | |
1699 | return -1; | |
1700 | ||
1701 | /* note, this HAS to be here, when we exit a client we attempt to | |
1702 | * send them data, if this generates a write error we must *not* add | |
1703 | * them to the abort list --fl | |
1704 | */ | |
1705 | SetClosing(source_p); | |
1706 | ||
1707 | hdata.local_link = client_p; | |
1708 | hdata.target = source_p; | |
1709 | hdata.from = from; | |
1710 | hdata.comment = comment; | |
1711 | call_hook(h_client_exit, &hdata); | |
1712 | ||
1713 | if(MyConnect(source_p)) | |
1714 | { | |
1715 | /* Local clients of various types */ | |
1716 | if(IsPerson(source_p)) | |
1717 | return exit_local_client(client_p, source_p, from, comment); | |
1718 | else if(IsServer(source_p)) | |
1719 | return exit_local_server(client_p, source_p, from, comment); | |
1720 | /* IsUnknown || IsConnecting || IsHandShake */ | |
1721 | else if(!IsReject(source_p)) | |
1722 | return exit_unknown_client(client_p, source_p, from, comment); | |
1723 | } | |
1724 | else | |
1725 | { | |
1726 | /* Remotes */ | |
1727 | if(IsPerson(source_p)) | |
1728 | return exit_remote_client(client_p, source_p, from, comment); | |
1729 | else if(IsServer(source_p)) | |
1730 | return exit_remote_server(client_p, source_p, from, comment); | |
1731 | } | |
1732 | ||
1733 | return -1; | |
1734 | } | |
1735 | ||
1736 | /* | |
1737 | * Count up local client memory | |
1738 | */ | |
1739 | ||
1740 | /* XXX one common Client list now */ | |
1741 | void | |
1742 | count_local_client_memory(size_t * count, size_t * local_client_memory_used) | |
1743 | { | |
1744 | size_t lusage; | |
1745 | BlockHeapUsage(lclient_heap, count, NULL, &lusage); | |
1746 | *local_client_memory_used = lusage + (*count * (sizeof(MemBlock) + sizeof(struct Client))); | |
1747 | } | |
1748 | ||
1749 | /* | |
1750 | * Count up remote client memory | |
1751 | */ | |
1752 | void | |
1753 | count_remote_client_memory(size_t * count, size_t * remote_client_memory_used) | |
1754 | { | |
1755 | size_t lcount, rcount; | |
1756 | BlockHeapUsage(lclient_heap, &lcount, NULL, NULL); | |
1757 | BlockHeapUsage(client_heap, &rcount, NULL, NULL); | |
1758 | *count = rcount - lcount; | |
1759 | *remote_client_memory_used = *count * (sizeof(MemBlock) + sizeof(struct Client)); | |
1760 | } | |
1761 | ||
1762 | ||
1763 | /* | |
1764 | * accept processing, this adds a form of "caller ID" to ircd | |
1765 | * | |
1766 | * If a client puts themselves into "caller ID only" mode, | |
1767 | * only clients that match a client pointer they have put on | |
1768 | * the accept list will be allowed to message them. | |
1769 | * | |
1770 | * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ] | |
1771 | * | |
1772 | * [target.allow_list] -> [ source1 ] -> [source2 ] | |
1773 | * | |
1774 | * i.e. a target will have a link list of source pointers it will allow | |
1775 | * each source client then has a back pointer pointing back | |
1776 | * to the client that has it on its accept list. | |
1777 | * This allows for exit_one_client to remove these now bogus entries | |
1778 | * from any client having an accept on them. | |
1779 | */ | |
1780 | /* | |
1781 | * del_all_accepts | |
1782 | * | |
1783 | * inputs - pointer to exiting client | |
1784 | * output - NONE | |
1785 | * side effects - Walk through given clients allow_list and on_allow_list | |
1786 | * remove all references to this client | |
1787 | */ | |
1788 | void | |
1789 | del_all_accepts(struct Client *client_p) | |
1790 | { | |
1791 | dlink_node *ptr; | |
1792 | dlink_node *next_ptr; | |
1793 | struct Client *target_p; | |
1794 | ||
1795 | if(MyClient(client_p) && client_p->localClient->allow_list.head) | |
1796 | { | |
1797 | /* clear this clients accept list, and remove them from | |
1798 | * everyones on_accept_list | |
1799 | */ | |
1800 | DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->allow_list.head) | |
1801 | { | |
1802 | target_p = ptr->data; | |
1803 | dlinkFindDestroy(client_p, &target_p->on_allow_list); | |
1804 | dlinkDestroy(ptr, &client_p->localClient->allow_list); | |
1805 | } | |
1806 | } | |
1807 | ||
1808 | /* remove this client from everyones accept list */ | |
1809 | DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head) | |
1810 | { | |
1811 | target_p = ptr->data; | |
1812 | dlinkFindDestroy(client_p, &target_p->localClient->allow_list); | |
1813 | dlinkDestroy(ptr, &client_p->on_allow_list); | |
1814 | } | |
1815 | } | |
1816 | ||
1817 | /* | |
1818 | * show_ip() - asks if the true IP shoudl be shown when source is | |
1819 | * askin for info about target | |
1820 | * | |
1821 | * Inputs - source_p who is asking | |
1822 | * - target_p who do we want the info on | |
1823 | * Output - returns 1 if clear IP can be showed, otherwise 0 | |
1824 | * Side Effects - none | |
1825 | */ | |
1826 | ||
1827 | int | |
1828 | show_ip(struct Client *source_p, struct Client *target_p) | |
1829 | { | |
1830 | if(IsAnyServer(target_p)) | |
1831 | { | |
1832 | #ifndef HIDE_SERVERS_IPS | |
1833 | if(source_p == NULL || IsOper(source_p)) | |
1834 | return 1; | |
1835 | #endif | |
1836 | return 0; | |
1837 | } | |
1838 | else if(IsIPSpoof(target_p)) | |
1839 | { | |
1840 | /* source == NULL indicates message is being sent | |
1841 | * to local opers. | |
1842 | */ | |
1843 | if(!ConfigFileEntry.hide_spoof_ips && | |
1844 | (source_p == NULL || MyOper(source_p))) | |
1845 | return 1; | |
1846 | return 0; | |
1847 | } | |
1848 | else if(IsDynSpoof(target_p) && (source_p != NULL && !IsOper(source_p))) | |
1849 | return 0; | |
1850 | else | |
1851 | return 1; | |
1852 | } | |
1853 | ||
1854 | int | |
1855 | show_ip_conf(struct ConfItem *aconf, struct Client *source_p) | |
1856 | { | |
1857 | if(IsConfDoSpoofIp(aconf)) | |
1858 | { | |
1859 | if(!ConfigFileEntry.hide_spoof_ips && MyOper(source_p)) | |
1860 | return 1; | |
1861 | ||
1862 | return 0; | |
1863 | } | |
1864 | else | |
1865 | return 1; | |
1866 | } | |
1867 | ||
1868 | /* | |
1869 | * initUser | |
1870 | * | |
1871 | * inputs - none | |
1872 | * outputs - none | |
1873 | * | |
1874 | * side effects - Creates a block heap for struct Users | |
1875 | * | |
1876 | */ | |
1877 | static BlockHeap *user_heap; | |
1878 | void | |
1879 | initUser(void) | |
1880 | { | |
1881 | user_heap = BlockHeapCreate(sizeof(struct User), USER_HEAP_SIZE); | |
1882 | if(!user_heap) | |
1883 | outofmemory(); | |
1884 | } | |
1885 | ||
1886 | /* | |
1887 | * make_user | |
1888 | * | |
1889 | * inputs - pointer to client struct | |
1890 | * output - pointer to struct User | |
1891 | * side effects - add's an User information block to a client | |
1892 | * if it was not previously allocated. | |
1893 | */ | |
1894 | struct User * | |
1895 | make_user(struct Client *client_p) | |
1896 | { | |
1897 | struct User *user; | |
1898 | ||
1899 | user = client_p->user; | |
1900 | if(!user) | |
1901 | { | |
1902 | user = (struct User *) BlockHeapAlloc(user_heap); | |
1903 | user->refcnt = 1; | |
1904 | client_p->user = user; | |
1905 | } | |
1906 | return user; | |
1907 | } | |
1908 | ||
1909 | /* | |
1910 | * make_server | |
1911 | * | |
1912 | * inputs - pointer to client struct | |
1913 | * output - pointer to server_t | |
1914 | * side effects - add's an Server information block to a client | |
1915 | * if it was not previously allocated. | |
1916 | */ | |
1917 | server_t * | |
1918 | make_server(struct Client *client_p) | |
1919 | { | |
1920 | server_t *serv = client_p->serv; | |
1921 | ||
1922 | if(!serv) | |
1923 | { | |
1924 | serv = (server_t *) MyMalloc(sizeof(server_t)); | |
1925 | client_p->serv = serv; | |
1926 | } | |
1927 | return client_p->serv; | |
1928 | } | |
1929 | ||
1930 | /* | |
1931 | * free_user | |
1932 | * | |
1933 | * inputs - pointer to user struct | |
1934 | * - pointer to client struct | |
1935 | * output - none | |
1936 | * side effects - Decrease user reference count by one and release block, | |
1937 | * if count reaches 0 | |
1938 | */ | |
1939 | void | |
1940 | free_user(struct User *user, struct Client *client_p) | |
1941 | { | |
1942 | if(--user->refcnt <= 0) | |
1943 | { | |
1944 | if(user->away) | |
1945 | MyFree((char *) user->away); | |
1946 | /* | |
1947 | * sanity check | |
1948 | */ | |
1949 | if(user->refcnt < 0 || user->invited.head || user->channel.head) | |
1950 | { | |
1951 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1952 | "* %#lx user (%s!%s@%s) %#lx %#lx %#lx %lu %d *", | |
1953 | (unsigned long) client_p, | |
1954 | client_p ? client_p-> | |
1955 | name : "<noname>", | |
1956 | client_p->username, | |
1957 | client_p->host, | |
1958 | (unsigned long) user, | |
1959 | (unsigned long) user->invited.head, | |
1960 | (unsigned long) user->channel.head, | |
1961 | dlink_list_length(&user->channel), | |
1962 | user->refcnt); | |
1963 | s_assert(!user->refcnt); | |
1964 | s_assert(!user->invited.head); | |
1965 | s_assert(!user->channel.head); | |
1966 | } | |
1967 | ||
1968 | BlockHeapFree(user_heap, user); | |
1969 | } | |
1970 | } | |
1971 | ||
1972 | void | |
1973 | init_uid(void) | |
1974 | { | |
1975 | int i; | |
1976 | ||
1977 | for(i = 0; i < 3; i++) | |
1978 | current_uid[i] = me.id[i]; | |
1979 | ||
1980 | for(i = 3; i < 9; i++) | |
1981 | current_uid[i] = 'A'; | |
1982 | ||
1983 | current_uid[9] = '\0'; | |
1984 | } | |
1985 | ||
1986 | ||
1987 | char * | |
1988 | generate_uid(void) | |
1989 | { | |
1990 | int i; | |
1991 | ||
1992 | for(i = 8; i > 3; i--) | |
1993 | { | |
1994 | if(current_uid[i] == 'Z') | |
1995 | { | |
1996 | current_uid[i] = '0'; | |
1997 | return current_uid; | |
1998 | } | |
1999 | else if(current_uid[i] != '9') | |
2000 | { | |
2001 | current_uid[i]++; | |
2002 | return current_uid; | |
2003 | } | |
2004 | else | |
2005 | current_uid[i] = 'A'; | |
2006 | } | |
2007 | ||
2008 | /* if this next if() triggers, we're fucked. */ | |
2009 | if(current_uid[3] == 'Z') | |
2010 | { | |
2011 | current_uid[i] = 'A'; | |
2012 | s_assert(0); | |
2013 | } | |
2014 | else | |
2015 | current_uid[i]++; | |
2016 | ||
2017 | return current_uid; | |
2018 | } | |
2019 | ||
2020 | /* | |
2021 | * close_connection | |
2022 | * Close the physical connection. This function must make | |
2023 | * MyConnect(client_p) == FALSE, and set client_p->from == NULL. | |
2024 | */ | |
2025 | void | |
2026 | close_connection(struct Client *client_p) | |
2027 | { | |
2028 | s_assert(client_p != NULL); | |
2029 | if(client_p == NULL) | |
2030 | return; | |
2031 | ||
2032 | s_assert(MyConnect(client_p)); | |
2033 | if(!MyConnect(client_p)) | |
2034 | return; | |
2035 | ||
2036 | if(IsServer(client_p)) | |
2037 | { | |
2038 | struct server_conf *server_p; | |
2039 | ||
2040 | ServerStats->is_sv++; | |
2041 | ServerStats->is_sbs += client_p->localClient->sendB; | |
2042 | ServerStats->is_sbr += client_p->localClient->receiveB; | |
2043 | ServerStats->is_sks += client_p->localClient->sendK; | |
2044 | ServerStats->is_skr += client_p->localClient->receiveK; | |
2045 | ServerStats->is_sti += CurrentTime - client_p->localClient->firsttime; | |
2046 | if(ServerStats->is_sbs > 2047) | |
2047 | { | |
2048 | ServerStats->is_sks += (ServerStats->is_sbs >> 10); | |
2049 | ServerStats->is_sbs &= 0x3ff; | |
2050 | } | |
2051 | if(ServerStats->is_sbr > 2047) | |
2052 | { | |
2053 | ServerStats->is_skr += (ServerStats->is_sbr >> 10); | |
2054 | ServerStats->is_sbr &= 0x3ff; | |
2055 | } | |
2056 | ||
2057 | /* | |
2058 | * If the connection has been up for a long amount of time, schedule | |
2059 | * a 'quick' reconnect, else reset the next-connect cycle. | |
2060 | */ | |
2061 | if((server_p = find_server_conf(client_p->name)) != NULL) | |
2062 | { | |
2063 | /* | |
2064 | * Reschedule a faster reconnect, if this was a automatically | |
2065 | * connected configuration entry. (Note that if we have had | |
2066 | * a rehash in between, the status has been changed to | |
2067 | * CONF_ILLEGAL). But only do this if it was a "good" link. | |
2068 | */ | |
2069 | server_p->hold = time(NULL); | |
2070 | server_p->hold += | |
2071 | (server_p->hold - client_p->localClient->lasttime > | |
2072 | HANGONGOODLINK) ? HANGONRETRYDELAY : ConFreq(server_p->class); | |
2073 | } | |
2074 | ||
2075 | } | |
2076 | else if(IsClient(client_p)) | |
2077 | { | |
2078 | ServerStats->is_cl++; | |
2079 | ServerStats->is_cbs += client_p->localClient->sendB; | |
2080 | ServerStats->is_cbr += client_p->localClient->receiveB; | |
2081 | ServerStats->is_cks += client_p->localClient->sendK; | |
2082 | ServerStats->is_ckr += client_p->localClient->receiveK; | |
2083 | ServerStats->is_cti += CurrentTime - client_p->localClient->firsttime; | |
2084 | if(ServerStats->is_cbs > 2047) | |
2085 | { | |
2086 | ServerStats->is_cks += (ServerStats->is_cbs >> 10); | |
2087 | ServerStats->is_cbs &= 0x3ff; | |
2088 | } | |
2089 | if(ServerStats->is_cbr > 2047) | |
2090 | { | |
2091 | ServerStats->is_ckr += (ServerStats->is_cbr >> 10); | |
2092 | ServerStats->is_cbr &= 0x3ff; | |
2093 | } | |
2094 | } | |
2095 | else | |
2096 | ServerStats->is_ni++; | |
2097 | ||
2098 | if(-1 < client_p->localClient->fd) | |
2099 | { | |
2100 | /* attempt to flush any pending dbufs. Evil, but .. -- adrian */ | |
2101 | if(!IsIOError(client_p)) | |
2102 | send_queued_write(client_p->localClient->fd, client_p); | |
2103 | ||
2104 | comm_close(client_p->localClient->fd); | |
2105 | client_p->localClient->fd = -1; | |
2106 | } | |
2107 | ||
2108 | if(HasServlink(client_p)) | |
2109 | { | |
2110 | if(client_p->localClient->fd > -1) | |
2111 | { | |
2112 | comm_close(client_p->localClient->ctrlfd); | |
2113 | client_p->localClient->ctrlfd = -1; | |
2114 | } | |
2115 | } | |
2116 | ||
2117 | linebuf_donebuf(&client_p->localClient->buf_sendq); | |
2118 | linebuf_donebuf(&client_p->localClient->buf_recvq); | |
2119 | detach_conf(client_p); | |
2120 | ||
2121 | /* XXX shouldnt really be done here. */ | |
2122 | detach_server_conf(client_p); | |
2123 | ||
2124 | client_p->from = NULL; /* ...this should catch them! >:) --msa */ | |
2125 | ClearMyConnect(client_p); | |
2126 | SetIOError(client_p); | |
2127 | } | |
2128 | ||
2129 | ||
2130 | ||
2131 | void | |
2132 | error_exit_client(struct Client *client_p, int error) | |
2133 | { | |
2134 | /* | |
2135 | * ...hmm, with non-blocking sockets we might get | |
2136 | * here from quite valid reasons, although.. why | |
2137 | * would select report "data available" when there | |
2138 | * wasn't... so, this must be an error anyway... --msa | |
2139 | * actually, EOF occurs when read() returns 0 and | |
2140 | * in due course, select() returns that fd as ready | |
2141 | * for reading even though it ends up being an EOF. -avalon | |
2142 | */ | |
2143 | char errmsg[255]; | |
2144 | int current_error = comm_get_sockerr(client_p->localClient->fd); | |
2145 | ||
2146 | SetIOError(client_p); | |
2147 | ||
2148 | if(IsServer(client_p) || IsHandshake(client_p)) | |
2149 | { | |
2150 | int connected = CurrentTime - client_p->localClient->firsttime; | |
2151 | ||
2152 | if(error == 0) | |
2153 | { | |
2154 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2155 | "Server %s closed the connection", | |
2156 | get_server_name(client_p, SHOW_IP)); | |
2157 | ||
2158 | ilog(L_SERVER, "Server %s closed the connection", | |
2159 | log_client_name(client_p, SHOW_IP)); | |
2160 | } | |
2161 | else | |
2162 | { | |
2163 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, | |
2164 | "Lost connection to %s: %s", | |
2165 | client_p->name, strerror(current_error)); | |
2166 | ilog(L_SERVER, "Lost connection to %s: %s", | |
2167 | log_client_name(client_p, SHOW_IP), strerror(current_error)); | |
2168 | } | |
2169 | ||
2170 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
2171 | "%s had been connected for %d day%s, %2d:%02d:%02d", | |
2172 | client_p->name, connected / 86400, | |
2173 | (connected / 86400 == 1) ? "" : "s", | |
2174 | (connected % 86400) / 3600, | |
2175 | (connected % 3600) / 60, connected % 60); | |
2176 | } | |
2177 | ||
2178 | if(error == 0) | |
2179 | strlcpy(errmsg, "Remote host closed the connection", sizeof(errmsg)); | |
2180 | else | |
2181 | ircsnprintf(errmsg, sizeof(errmsg), "Read error: %s", strerror(current_error)); | |
2182 | ||
2183 | exit_client(client_p, client_p, &me, errmsg); | |
2184 | } |