5 Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
7 Copyright (C) 1997 - 2001 Pekka Riikonen
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.
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.
22 #include "serverincludes.h"
25 /******************************************************************************
29 ******************************************************************************/
31 /* This function is used to add keys and stuff to common ID entry data
34 void silc_idlist_add_data(void *entry, SilcIDListData idata)
36 SilcIDListData data = (SilcIDListData)entry;
37 data->send_key = idata->send_key;
38 data->receive_key = idata->receive_key;
39 data->rekey = idata->rekey;
40 data->hash = idata->hash;
41 data->hmac_send = idata->hmac_send;
42 data->hmac_receive = idata->hmac_receive;
43 data->public_key = idata->public_key;
44 data->last_receive = idata->last_receive;
45 data->last_sent = idata->last_sent;
46 data->registered = idata->registered;
49 /* Free's all data in the common ID entry data structure. */
51 void silc_idlist_del_data(void *entry)
53 SilcIDListData idata = (SilcIDListData)entry;
55 silc_cipher_free(idata->send_key);
56 if (idata->receive_key)
57 silc_cipher_free(idata->receive_key);
59 if (idata->rekey->send_enc_key) {
60 memset(idata->rekey->send_enc_key, 0, idata->rekey->enc_key_len);
61 silc_free(idata->rekey->send_enc_key);
63 silc_free(idata->rekey);
65 if (idata->hmac_send) /* Same as idata->hmac_receive */
66 silc_hmac_free(idata->hmac_send);
67 if (idata->public_key)
68 silc_pkcs_public_key_free(idata->public_key);
73 SILC_TASK_CALLBACK_GLOBAL(silc_idlist_purge)
75 SilcIDListPurge i = (SilcIDListPurge)context;
77 SILC_LOG_DEBUG(("Start"));
79 silc_idcache_purge(i->cache);
80 silc_task_register(i->timeout_queue, 0,
83 SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
86 /******************************************************************************
88 Server entry functions
90 ******************************************************************************/
92 /* Add new server entry. This adds the new server entry to ID cache and
93 returns the allocated entry object or NULL on error. This is called
94 when new server connects to us. We also add ourselves to cache with
98 silc_idlist_add_server(SilcIDList id_list,
99 char *server_name, int server_type,
100 SilcServerID *id, SilcServerEntry router,
103 SilcServerEntry server;
105 SILC_LOG_DEBUG(("Adding new server entry"));
107 server = silc_calloc(1, sizeof(*server));
108 server->server_name = server_name;
109 server->server_type = server_type;
111 server->router = router;
112 server->connection = connection;
114 if (!silc_idcache_add(id_list->servers, server->server_name,
115 server->server_name ? strlen(server->server_name) : 0,
116 SILC_ID_SERVER, (void *)server->id,
117 (void *)server, TRUE, FALSE)) {
125 /* Finds server by Server ID */
128 silc_idlist_find_server_by_id(SilcIDList id_list, SilcServerID *id,
129 SilcIDCacheEntry *ret_entry)
131 SilcIDCacheEntry id_cache = NULL;
132 SilcServerEntry server;
137 SILC_LOG_DEBUG(("Server ID (%s)",
138 silc_id_render(id, SILC_ID_SERVER)));
140 if (!silc_idcache_find_by_id_one(id_list->servers, (void *)id,
141 SILC_ID_SERVER, &id_cache))
144 server = (SilcServerEntry)id_cache->context;
147 *ret_entry = id_cache;
152 /* Find server by name */
155 silc_idlist_find_server_by_name(SilcIDList id_list, char *name,
156 SilcIDCacheEntry *ret_entry)
158 SilcIDCacheEntry id_cache = NULL;
159 SilcServerEntry server;
161 SILC_LOG_DEBUG(("Server by name `%s'", name));
163 if (!silc_idcache_find_by_data_one(id_list->servers, name, &id_cache))
166 server = (SilcServerEntry)id_cache->context;
169 *ret_entry = id_cache;
171 SILC_LOG_DEBUG(("Found"));
176 /* Find server by connection parameters, hostname and port */
179 silc_idlist_find_server_by_conn(SilcIDList id_list, char *hostname,
180 int port, SilcIDCacheEntry *ret_entry)
182 SilcIDCacheList list = NULL;
183 SilcIDCacheEntry id_cache = NULL;
184 SilcServerEntry server = NULL;
185 SilcSocketConnection sock;
187 SILC_LOG_DEBUG(("Server by hostname %s and port %d", hostname, port));
189 if (!silc_idcache_find_by_id(id_list->servers, SILC_ID_CACHE_ANY,
190 SILC_ID_SERVER, &list))
193 if (!silc_idcache_list_first(list, &id_cache)) {
194 silc_idcache_list_free(list);
199 server = (SilcServerEntry)id_cache->context;
200 sock = (SilcSocketConnection)server->connection;
202 if (sock && ((sock->hostname && !strcmp(sock->hostname, hostname)) ||
203 (sock->ip && !strcmp(sock->ip, hostname)))
204 && sock->port == port)
210 if (!silc_idcache_list_next(list, &id_cache))
214 silc_idcache_list_free(list);
217 *ret_entry = id_cache;
219 SILC_LOG_DEBUG(("Found"));
224 /* Replaces old Server ID with new one */
227 silc_idlist_replace_server_id(SilcIDList id_list, SilcServerID *old_id,
228 SilcServerID *new_id)
230 SilcIDCacheEntry id_cache = NULL;
231 SilcServerEntry server;
233 if (!old_id || !new_id)
236 SILC_LOG_DEBUG(("Replacing Server ID"));
238 if (!silc_idcache_find_by_id_one(id_list->servers, (void *)old_id,
239 SILC_ID_SERVER, &id_cache))
242 server = (SilcServerEntry)id_cache->context;
243 silc_free(server->id);
245 id_cache->id = (void *)new_id;
247 SILC_LOG_DEBUG(("Found"));
252 /* Removes and free's server entry from ID list */
254 int silc_idlist_del_server(SilcIDList id_list, SilcServerEntry entry)
256 SILC_LOG_DEBUG(("Start"));
259 /* Remove from cache */
261 if (!silc_idcache_del_by_id(id_list->servers, SILC_ID_SERVER,
266 if (entry->server_name)
267 silc_free(entry->server_name);
269 silc_free(entry->id);
271 memset(entry, 'F', sizeof(*entry));
279 /******************************************************************************
281 Client entry functions
283 ******************************************************************************/
285 /* Add new client entry. This adds the client entry to ID cache system
286 and returns the allocated client entry or NULL on error. This is
287 called when new client connection is accepted to the server. If The
288 `router' is provided then the all server routines assume that the client
289 is not directly connected local client but it has router set and is
290 remote. If this is the case then `connection' must be NULL. If, on the
291 other hand, the `connection' is provided then the client is assumed
292 to be directly connected local client and `router' must be NULL. */
295 silc_idlist_add_client(SilcIDList id_list, unsigned char *nickname,
296 uint32 nickname_len, char *username,
297 char *userinfo, SilcClientID *id,
298 SilcServerEntry router, void *connection)
300 SilcClientEntry client;
302 SILC_LOG_DEBUG(("Adding new client entry"));
304 client = silc_calloc(1, sizeof(*client));
305 client->nickname = nickname;
306 client->username = username;
307 client->userinfo = userinfo;
309 client->router = router;
310 client->connection = connection;
311 silc_list_init(client->channels, struct SilcChannelClientEntryStruct,
314 if (!silc_idcache_add(id_list->clients, nickname, nickname_len,
315 SILC_ID_CLIENT, (void *)client->id,
316 (void *)client, TRUE, FALSE)) {
324 /* Free client entry. This free's everything and removes the entry
325 from ID cache. Call silc_idlist_del_data before calling this one. */
327 int silc_idlist_del_client(SilcIDList id_list, SilcClientEntry entry)
329 SILC_LOG_DEBUG(("Start"));
332 /* Remove from cache */
334 if (!silc_idcache_del_by_id(id_list->clients, SILC_ID_CLIENT,
340 silc_free(entry->nickname);
342 silc_free(entry->username);
344 silc_free(entry->userinfo);
346 silc_free(entry->id);
348 memset(entry, 'F', sizeof(*entry));
357 /* Returns all clients matching requested nickname. Number of clients is
358 returned to `clients_count'. Caller must free the returned table. */
360 int silc_idlist_get_clients_by_nickname(SilcIDList id_list, char *nickname,
362 SilcClientEntry **clients,
363 uint32 *clients_count)
365 SilcIDCacheList list = NULL;
366 SilcIDCacheEntry id_cache = NULL;
369 SILC_LOG_DEBUG(("Start"));
371 if (!silc_idcache_find_by_data(id_list->clients, nickname, &list))
374 *clients = silc_realloc(*clients,
375 (silc_idcache_list_count(list) + *clients_count) *
379 silc_idcache_list_first(list, &id_cache);
380 (*clients)[i++] = (SilcClientEntry)id_cache->context;
382 while (silc_idcache_list_next(list, &id_cache))
383 (*clients)[i++] = (SilcClientEntry)id_cache->context;
385 silc_idcache_list_free(list);
392 /* Returns all clients matching requested nickname. Number of clients is
393 returned to `clients_count'. Caller must free the returned table. */
394 /* XXX This actually checks the data, which can be hash of the nickname
395 but is not if the client is local client. Global client on global
396 list may have hash. Thus, this is not fully reliable function.
397 Instead this should probably check the hash from the list of client ID's. */
399 int silc_idlist_get_clients_by_hash(SilcIDList id_list, char *nickname,
401 SilcClientEntry **clients,
402 uint32 *clients_count)
404 SilcIDCacheList list = NULL;
405 SilcIDCacheEntry id_cache = NULL;
406 unsigned char hash[32];
409 SILC_LOG_DEBUG(("Start"));
411 silc_hash_make(md5hash, nickname, strlen(nickname), hash);
413 if (!silc_idcache_find_by_data(id_list->clients, hash, &list))
416 *clients = silc_realloc(*clients,
417 (silc_idcache_list_count(list) + *clients_count) *
421 silc_idcache_list_first(list, &id_cache);
422 (*clients)[i++] = (SilcClientEntry)id_cache->context;
424 while (silc_idcache_list_next(list, &id_cache))
425 (*clients)[i++] = (SilcClientEntry)id_cache->context;
427 silc_idcache_list_free(list);
434 /* Finds client by Client ID */
437 silc_idlist_find_client_by_id(SilcIDList id_list, SilcClientID *id,
438 SilcIDCacheEntry *ret_entry)
440 SilcIDCacheEntry id_cache = NULL;
441 SilcClientEntry client;
446 SILC_LOG_DEBUG(("Client ID (%s)",
447 silc_id_render(id, SILC_ID_CLIENT)));
449 if (!silc_idcache_find_by_id_one(id_list->clients, (void *)id,
450 SILC_ID_CLIENT, &id_cache))
453 client = (SilcClientEntry)id_cache->context;
456 *ret_entry = id_cache;
458 SILC_LOG_DEBUG(("Found"));
463 /* Replaces old Client ID with new one */
466 silc_idlist_replace_client_id(SilcIDList id_list, SilcClientID *old_id,
467 SilcClientID *new_id)
469 SilcIDCacheEntry id_cache = NULL;
470 SilcClientEntry client;
472 if (!old_id || !new_id)
475 SILC_LOG_DEBUG(("Replacing Client ID"));
477 if (!silc_idcache_find_by_id_one(id_list->clients, (void *)old_id,
478 SILC_ID_CLIENT, &id_cache))
481 client = (SilcClientEntry)id_cache->context;
482 silc_free(client->id);
484 id_cache->id = (void *)new_id;
486 /* If the old ID Cache data was the hash value of the old Client ID
487 replace it with the hash of new Client ID */
488 if (id_cache->data && SILC_ID_COMPARE_HASH(old_id, id_cache->data)) {
489 silc_free(id_cache->data);
490 id_cache->data = silc_calloc(sizeof(new_id->hash), sizeof(unsigned char));
491 memcpy(id_cache->data, new_id->hash, sizeof(new_id->hash));
492 silc_idcache_sort_by_data(id_list->clients);
495 SILC_LOG_DEBUG(("Replaced"));
500 /* Client cache entry destructor that is called when the cache is purged. */
502 void silc_idlist_client_destructor(SilcIDCache cache,
503 SilcIDCacheEntry entry)
505 SilcClientEntry client;
507 SILC_LOG_DEBUG(("Start"));
509 client = (SilcClientEntry)entry->context;
511 if (client->nickname)
512 silc_free(client->nickname);
513 if (client->username)
514 silc_free(client->username);
515 if (client->userinfo)
516 silc_free(client->userinfo);
518 silc_free(client->id);
520 memset(client, 'F', sizeof(*client));
525 /******************************************************************************
527 Channel entry functions
529 ******************************************************************************/
531 /* Add new channel entry. This add the new channel entry to the ID cache
532 system and returns the allocated entry or NULL on error. */
535 silc_idlist_add_channel(SilcIDList id_list, char *channel_name, int mode,
536 SilcChannelID *id, SilcServerEntry router,
537 SilcCipher channel_key, SilcHmac hmac)
539 SilcChannelEntry channel;
541 channel = silc_calloc(1, sizeof(*channel));
542 channel->channel_name = channel_name;
543 channel->mode = mode;
545 channel->router = router;
546 channel->channel_key = channel_key;
547 channel->hmac = hmac;
549 if (!silc_hmac_alloc("hmac-sha1-96", NULL, &channel->hmac)) {
554 silc_list_init(channel->user_list, struct SilcChannelClientEntryStruct,
557 if (!silc_idcache_add(id_list->channels, channel->channel_name,
558 channel->channel_name ? strlen(channel->channel_name) :
560 (void *)channel->id, (void *)channel, TRUE, FALSE)) {
568 /* Free channel entry. This free's everything. */
570 int silc_idlist_del_channel(SilcIDList id_list, SilcChannelEntry entry)
572 SILC_LOG_DEBUG(("Start"));
575 SilcChannelClientEntry chl;
577 /* Remove from cache */
579 if (!silc_idcache_del_by_id(id_list->channels, SILC_ID_CHANNEL,
584 if (entry->channel_name)
585 silc_free(entry->channel_name);
587 silc_free(entry->id);
589 silc_free(entry->topic);
590 if (entry->channel_key)
591 silc_cipher_free(entry->channel_key);
593 memset(entry->key, 0, entry->key_len / 8);
594 silc_free(entry->key);
597 silc_free(entry->cipher);
598 if (entry->hmac_name)
599 silc_free(entry->hmac_name);
601 silc_free(entry->rekey);
603 /* Free all data, free also any reference from the client's channel
604 list since they share the same memory. */
605 silc_list_start(entry->user_list);
606 while ((chl = silc_list_get(entry->user_list)) != SILC_LIST_END) {
607 silc_list_del(chl->client->channels, chl);
608 silc_list_del(entry->user_list, chl);
612 memset(entry, 'F', sizeof(*entry));
620 /* Finds channel by channel name. Channel names are unique and they
621 are not case-sensitive. */
624 silc_idlist_find_channel_by_name(SilcIDList id_list, char *name,
625 SilcIDCacheEntry *ret_entry)
627 SilcIDCacheList list = NULL;
628 SilcIDCacheEntry id_cache = NULL;
629 SilcChannelEntry channel;
631 SILC_LOG_DEBUG(("Channel by name"));
633 if (!silc_idcache_find_by_data_loose(id_list->channels, name, &list))
636 if (!silc_idcache_list_first(list, &id_cache)) {
637 silc_idcache_list_free(list);
641 channel = (SilcChannelEntry)id_cache->context;
644 *ret_entry = id_cache;
646 silc_idcache_list_free(list);
648 SILC_LOG_DEBUG(("Found"));
653 /* Finds channel by Channel ID. */
656 silc_idlist_find_channel_by_id(SilcIDList id_list, SilcChannelID *id,
657 SilcIDCacheEntry *ret_entry)
659 SilcIDCacheEntry id_cache = NULL;
660 SilcChannelEntry channel;
665 SILC_LOG_DEBUG(("Channel ID (%s)",
666 silc_id_render(id, SILC_ID_CHANNEL)));
668 if (!silc_idcache_find_by_id_one(id_list->channels, (void *)id,
669 SILC_ID_CHANNEL, &id_cache))
672 channel = (SilcChannelEntry)id_cache->context;
675 *ret_entry = id_cache;
677 SILC_LOG_DEBUG(("Found"));
682 /* Replaces old Channel ID with new one. This is done when router forces
683 normal server to change Channel ID. */
686 silc_idlist_replace_channel_id(SilcIDList id_list, SilcChannelID *old_id,
687 SilcChannelID *new_id)
689 SilcIDCacheEntry id_cache = NULL;
690 SilcChannelEntry channel;
692 if (!old_id || !new_id)
695 SILC_LOG_DEBUG(("Replacing Channel ID"));
697 if (!silc_idcache_find_by_id_one(id_list->channels, (void *)old_id,
698 SILC_ID_CHANNEL, &id_cache))
701 channel = (SilcChannelEntry)id_cache->context;
702 silc_free(channel->id);
703 channel->id = new_id;
704 id_cache->id = (void *)new_id;
706 SILC_LOG_DEBUG(("Replaced"));
711 /* Returns channels from the ID list. If the `channel_id' is NULL then
712 all channels are returned. */
715 silc_idlist_get_channels(SilcIDList id_list, SilcChannelID *channel_id,
716 uint32 *channels_count)
718 SilcIDCacheList list = NULL;
719 SilcIDCacheEntry id_cache = NULL;
720 SilcChannelEntry *channels;
723 SILC_LOG_DEBUG(("Start"));
725 if (!silc_idcache_find_by_id(id_list->channels, channel_id ? channel_id :
726 SILC_ID_CACHE_ANY, SILC_ID_CHANNEL, &list))
729 channels = silc_calloc(silc_idcache_list_count(list), sizeof(*channels));
732 silc_idcache_list_first(list, &id_cache);
733 channels[i++] = (SilcChannelEntry)id_cache->context;
735 while (silc_idcache_list_next(list, &id_cache))
736 channels[i++] = (SilcChannelEntry)id_cache->context;
738 silc_idcache_list_free(list);