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->hash = idata->hash;
40 data->hmac = idata->hmac;
41 data->hmac_key = idata->hmac_key;
42 data->hmac_key_len = idata->hmac_key_len;
43 data->pkcs = idata->pkcs;
44 data->public_key = idata->public_key;
45 data->last_receive = idata->last_receive;
46 data->last_sent = idata->last_sent;
47 data->registered = idata->registered;
50 /* Free's all data in the common ID entry data structure. */
52 void silc_idlist_del_data(void *entry)
54 SilcIDListData idata = (SilcIDListData)entry;
56 silc_cipher_free(idata->send_key);
57 if (idata->receive_key)
58 silc_cipher_free(idata->receive_key);
60 silc_hmac_free(idata->hmac);
61 if (idata->hmac_key) {
62 memset(idata->hmac_key, 0, idata->hmac_key_len);
63 silc_free(idata->hmac_key);
66 silc_pkcs_free(idata->pkcs);
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 void silc_idlist_del_server(SilcIDList id_list, SilcServerEntry entry)
257 /* Remove from cache */
259 silc_idcache_del_by_id(id_list->servers, SILC_ID_SERVER,
263 if (entry->server_name)
264 silc_free(entry->server_name);
266 silc_free(entry->id);
268 memset(entry, 'F', sizeof(*entry));
273 /******************************************************************************
275 Client entry functions
277 ******************************************************************************/
279 /* Add new client entry. This adds the client entry to ID cache system
280 and returns the allocated client entry or NULL on error. This is
281 called when new client connection is accepted to the server. If The
282 `router' is provided then the all server routines assume that the client
283 is not directly connected local client but it has router set and is
284 remote. If this is the case then `connection' must be NULL. If, on the
285 other hand, the `connection' is provided then the client is assumed
286 to be directly connected local client and `router' must be NULL. */
289 silc_idlist_add_client(SilcIDList id_list, unsigned char *nickname,
290 char *username, char *userinfo, SilcClientID *id,
291 SilcServerEntry router, void *connection)
293 SilcClientEntry client;
295 SILC_LOG_DEBUG(("Adding new client entry"));
297 client = silc_calloc(1, sizeof(*client));
298 client->nickname = nickname;
299 client->username = username;
300 client->userinfo = userinfo;
302 client->router = router;
303 client->connection = connection;
304 silc_list_init(client->channels, struct SilcChannelClientEntryStruct,
307 if (!silc_idcache_add(id_list->clients, nickname,
308 nickname ? strlen(nickname) : 0,
309 SILC_ID_CLIENT, (void *)client->id,
310 (void *)client, TRUE, FALSE)) {
318 /* Free client entry. This free's everything and removes the entry
319 from ID cache. Call silc_idlist_del_data before calling this one. */
321 int silc_idlist_del_client(SilcIDList id_list, SilcClientEntry entry)
324 /* Remove from cache */
326 if (!silc_idcache_del_by_id(id_list->clients, SILC_ID_CLIENT,
332 silc_free(entry->nickname);
334 silc_free(entry->username);
336 silc_free(entry->userinfo);
338 silc_free(entry->id);
340 memset(entry, 'F', sizeof(*entry));
349 /* Returns all clients matching requested nickname. Number of clients is
350 returned to `clients_count'. Caller must free the returned table. */
353 silc_idlist_get_clients_by_nickname(SilcIDList id_list, char *nickname,
354 char *server, unsigned int *clients_count)
356 SilcIDCacheList list = NULL;
357 SilcIDCacheEntry id_cache = NULL;
358 SilcClientEntry *clients;
361 SILC_LOG_DEBUG(("Start"));
363 if (!silc_idcache_find_by_data(id_list->clients, nickname, &list))
366 clients = silc_calloc(silc_idcache_list_count(list), sizeof(*clients));
369 silc_idcache_list_first(list, &id_cache);
370 clients[i++] = (SilcClientEntry)id_cache->context;
372 while (silc_idcache_list_next(list, &id_cache))
373 clients[i++] = (SilcClientEntry)id_cache->context;
375 silc_idcache_list_free(list);
383 /* Returns all clients matching requested nickname. Number of clients is
384 returned to `clients_count'. Caller must free the returned table. */
387 silc_idlist_get_clients_by_hash(SilcIDList id_list, char *nickname,
389 unsigned int *clients_count)
391 SilcIDCacheList list = NULL;
392 SilcIDCacheEntry id_cache = NULL;
393 SilcClientEntry *clients;
394 unsigned char hash[32];
397 SILC_LOG_DEBUG(("Start"));
399 silc_hash_make(md5hash, nickname, strlen(nickname), hash);
401 if (!silc_idcache_find_by_data(id_list->clients, hash, &list))
404 clients = silc_calloc(silc_idcache_list_count(list), sizeof(*clients));
407 silc_idcache_list_first(list, &id_cache);
408 clients[i++] = (SilcClientEntry)id_cache->context;
410 while (silc_idcache_list_next(list, &id_cache))
411 clients[i++] = (SilcClientEntry)id_cache->context;
413 silc_idcache_list_free(list);
421 /* Finds client entry by nickname. */
424 silc_idlist_find_client_by_nickname(SilcIDList id_list, char *nickname,
425 char *server, SilcIDCacheEntry *ret_entry)
427 SilcIDCacheList list = NULL;
428 SilcIDCacheEntry id_cache = NULL;
429 SilcClientEntry client = NULL;
431 SILC_LOG_DEBUG(("Client by nickname"));
434 if (!silc_idcache_find_by_data(id_list->clients, nickname, &list))
438 while (silc_idcache_list_next(list, &id_cache)) {
439 client = (SilcClientEntry)id_cache->context;
441 if (!strcmp(server, XXX, strlen(server)))
448 silc_idcache_list_free(list);
453 if (!silc_idcache_find_by_data_one(id_list->clients, nickname, &id_cache))
456 client = (SilcClientEntry)id_cache->context;
459 *ret_entry = id_cache;
462 SILC_LOG_DEBUG(("Found"));
467 /* Finds client by nickname hash. */
470 silc_idlist_find_client_by_hash(SilcIDList id_list, char *nickname,
471 SilcHash md5hash, SilcIDCacheEntry *ret_entry)
473 SilcIDCacheList list = NULL;
474 SilcIDCacheEntry id_cache = NULL;
475 SilcClientEntry client = NULL;
476 unsigned char hash[32];
478 SILC_LOG_DEBUG(("Client by hash"));
480 silc_hash_make(md5hash, nickname, strlen(nickname), hash);
482 if (!silc_idcache_find_by_id(id_list->clients, SILC_ID_CACHE_ANY,
483 SILC_ID_CLIENT, &list))
486 if (!silc_idcache_list_first(list, &id_cache)) {
487 silc_idcache_list_free(list);
492 client = (SilcClientEntry)id_cache->context;
494 if (client && !SILC_ID_COMPARE_HASH(client->id, hash))
500 if (!silc_idcache_list_next(list, &id_cache))
504 silc_idcache_list_free(list);
507 *ret_entry = id_cache;
509 SILC_LOG_DEBUG(("Found"));
514 /* Finds client by Client ID */
517 silc_idlist_find_client_by_id(SilcIDList id_list, SilcClientID *id,
518 SilcIDCacheEntry *ret_entry)
520 SilcIDCacheEntry id_cache = NULL;
521 SilcClientEntry client;
526 SILC_LOG_DEBUG(("Client ID (%s)",
527 silc_id_render(id, SILC_ID_CLIENT)));
529 if (!silc_idcache_find_by_id_one(id_list->clients, (void *)id,
530 SILC_ID_CLIENT, &id_cache))
533 client = (SilcClientEntry)id_cache->context;
536 *ret_entry = id_cache;
538 SILC_LOG_DEBUG(("Found"));
543 /* Replaces old Client ID with new one */
546 silc_idlist_replace_client_id(SilcIDList id_list, SilcClientID *old_id,
547 SilcClientID *new_id)
549 SilcIDCacheEntry id_cache = NULL;
550 SilcClientEntry client;
552 if (!old_id || !new_id)
555 SILC_LOG_DEBUG(("Replacing Client ID"));
557 if (!silc_idcache_find_by_id_one(id_list->clients, (void *)old_id,
558 SILC_ID_CLIENT, &id_cache))
561 client = (SilcClientEntry)id_cache->context;
562 silc_free(client->id);
564 id_cache->id = (void *)new_id;
566 /* If the old ID Cache data was the hash value of the old Client ID
567 replace it with the hash of new Client ID */
568 if (id_cache->data && !SILC_ID_COMPARE_HASH(old_id, id_cache->data)) {
569 silc_free(id_cache->data);
570 id_cache->data = silc_calloc(sizeof(new_id->hash), sizeof(unsigned char));
571 memcpy(id_cache->data, new_id->hash, sizeof(new_id->hash));
572 silc_idcache_sort_by_data(id_list->clients);
575 SILC_LOG_DEBUG(("Replaced"));
580 /* Client cache entry destructor that is called when the cache is purged. */
582 void silc_idlist_client_destructor(SilcIDCache cache,
583 SilcIDCacheEntry entry)
585 SilcClientEntry client;
587 SILC_LOG_DEBUG(("Start"));
589 client = (SilcClientEntry)entry->context;
591 if (client->nickname)
592 silc_free(client->nickname);
593 if (client->username)
594 silc_free(client->username);
595 if (client->userinfo)
596 silc_free(client->userinfo);
598 silc_free(client->id);
600 memset(client, 'F', sizeof(*client));
605 /******************************************************************************
607 Channel entry functions
609 ******************************************************************************/
611 /* Add new channel entry. This add the new channel entry to the ID cache
612 system and returns the allocated entry or NULL on error. */
615 silc_idlist_add_channel(SilcIDList id_list, char *channel_name, int mode,
616 SilcChannelID *id, SilcServerEntry router,
617 SilcCipher channel_key, SilcHmac hmac)
619 SilcChannelEntry channel;
621 channel = silc_calloc(1, sizeof(*channel));
622 channel->channel_name = channel_name;
623 channel->mode = mode;
625 channel->router = router;
626 channel->channel_key = channel_key;
627 channel->hmac = hmac;
629 if (!silc_hmac_alloc("hmac-sha1-96", NULL, &channel->hmac)) {
634 silc_list_init(channel->user_list, struct SilcChannelClientEntryStruct,
637 if (!silc_idcache_add(id_list->channels, channel->channel_name,
638 channel->channel_name ? strlen(channel->channel_name) :
640 (void *)channel->id, (void *)channel, TRUE, FALSE)) {
648 /* Free channel entry. This free's everything. */
650 int silc_idlist_del_channel(SilcIDList id_list, SilcChannelEntry entry)
653 SilcChannelClientEntry chl;
655 /* Remove from cache */
657 if (!silc_idcache_del_by_id(id_list->channels, SILC_ID_CHANNEL,
662 if (entry->channel_name)
663 silc_free(entry->channel_name);
665 silc_free(entry->id);
667 silc_free(entry->topic);
668 if (entry->channel_key)
669 silc_cipher_free(entry->channel_key);
671 memset(entry->key, 0, entry->key_len / 8);
672 silc_free(entry->key);
675 /* Free all data, free also any reference from the client's channel
676 list since they share the same memory. */
677 silc_list_start(entry->user_list);
678 while ((chl = silc_list_get(entry->user_list)) != SILC_LIST_END) {
679 silc_list_del(chl->client->channels, chl);
680 silc_list_del(entry->user_list, chl);
684 memset(entry, 'F', sizeof(*entry));
692 /* Finds channel by channel name. Channel names are unique and they
693 are not case-sensitive. */
696 silc_idlist_find_channel_by_name(SilcIDList id_list, char *name,
697 SilcIDCacheEntry *ret_entry)
699 SilcIDCacheList list = NULL;
700 SilcIDCacheEntry id_cache = NULL;
701 SilcChannelEntry channel;
703 SILC_LOG_DEBUG(("Channel by name"));
705 if (!silc_idcache_find_by_data_loose(id_list->channels, name, &list))
708 if (!silc_idcache_list_first(list, &id_cache)) {
709 silc_idcache_list_free(list);
713 channel = (SilcChannelEntry)id_cache->context;
716 *ret_entry = id_cache;
718 silc_idcache_list_free(list);
720 SILC_LOG_DEBUG(("Found"));
725 /* Finds channel by Channel ID. */
728 silc_idlist_find_channel_by_id(SilcIDList id_list, SilcChannelID *id,
729 SilcIDCacheEntry *ret_entry)
731 SilcIDCacheEntry id_cache = NULL;
732 SilcChannelEntry channel;
737 SILC_LOG_DEBUG(("Channel ID (%s)",
738 silc_id_render(id, SILC_ID_CHANNEL)));
740 if (!silc_idcache_find_by_id_one(id_list->channels, (void *)id,
741 SILC_ID_CHANNEL, &id_cache))
744 channel = (SilcChannelEntry)id_cache->context;
747 *ret_entry = id_cache;
749 SILC_LOG_DEBUG(("Found"));
754 /* Replaces old Channel ID with new one. This is done when router forces
755 normal server to change Channel ID. */
758 silc_idlist_replace_channel_id(SilcIDList id_list, SilcChannelID *old_id,
759 SilcChannelID *new_id)
761 SilcIDCacheEntry id_cache = NULL;
762 SilcChannelEntry channel;
764 if (!old_id || !new_id)
767 SILC_LOG_DEBUG(("Replacing Channel ID"));
769 if (!silc_idcache_find_by_id_one(id_list->channels, (void *)old_id,
770 SILC_ID_CHANNEL, &id_cache))
773 channel = (SilcChannelEntry)id_cache->context;
774 silc_free(channel->id);
775 channel->id = new_id;
776 id_cache->id = (void *)new_id;