+typedef struct {
+ SilcClient client;
+ SilcClientConnection conn;
+ SilcUInt32 list_count;
+ SilcBuffer client_id_list;
+ SilcGetClientCallback completion;
+ void *context;
+} *GetClientsByListInternal;
+
+SILC_CLIENT_CMD_FUNC(get_clients_list_callback)
+{
+ GetClientsByListInternal i = (GetClientsByListInternal)context;
+ SilcIDCacheEntry id_cache = NULL;
+ SilcBuffer client_id_list = i->client_id_list;
+ SilcClientEntry *clients = NULL;
+ SilcUInt32 clients_count = 0;
+ bool found = FALSE;
+ int c;
+
+ SILC_LOG_DEBUG(("Start"));
+
+ for (c = 0; c < i->list_count; c++) {
+ SilcUInt16 idp_len;
+ SilcClientID *client_id;
+
+ /* Get Client ID */
+ SILC_GET16_MSB(idp_len, client_id_list->data + 2);
+ idp_len += 4;
+ client_id = silc_id_payload_parse_id(client_id_list->data, idp_len);
+ if (!client_id) {
+ silc_buffer_pull(client_id_list, idp_len);
+ continue;
+ }
+
+ /* Get the client entry */
+ if (silc_idcache_find_by_id_one_ext(i->conn->client_cache,
+ (void *)client_id,
+ NULL, NULL,
+ silc_hash_client_id_compare, NULL,
+ &id_cache)) {
+ clients = silc_realloc(clients, sizeof(*clients) *
+ (clients_count + 1));
+ clients[clients_count] = (SilcClientEntry)id_cache->context;
+ clients_count++;
+ found = TRUE;
+ }
+
+ silc_free(client_id);
+ silc_buffer_pull(client_id_list, idp_len);
+ }
+
+ if (found) {
+ i->completion(i->client, i->conn, clients, clients_count, i->context);
+ silc_free(clients);
+ } else {
+ i->completion(i->client, i->conn, NULL, 0, i->context);
+ }
+
+ if (i->client_id_list)
+ silc_buffer_free(i->client_id_list);
+ silc_free(i);
+}
+
+/* Gets client entries by the list of client ID's `client_id_list'. This
+ always resolves those client ID's it does not know yet from the server
+ so this function might take a while. The `client_id_list' is a list
+ of ID Payloads added one after other. JOIN command reply and USERS
+ command reply for example returns this sort of list. The `completion'
+ will be called after the entries are available. */
+
+void silc_client_get_clients_by_list(SilcClient client,
+ SilcClientConnection conn,
+ SilcUInt32 list_count,
+ SilcBuffer client_id_list,
+ SilcGetClientCallback completion,
+ void *context)
+{
+ SilcIDCacheEntry id_cache = NULL;
+ int i;
+ unsigned char **res_argv = NULL;
+ SilcUInt32 *res_argv_lens = NULL, *res_argv_types = NULL, res_argc = 0;
+ GetClientsByListInternal in;
+
+ SILC_LOG_DEBUG(("Start"));
+
+ in = silc_calloc(1, sizeof(*in));
+ in->client = client;
+ in->conn = conn;
+ in->list_count = list_count;
+ in->client_id_list = silc_buffer_copy(client_id_list);
+ in->completion = completion;
+ in->context = context;
+
+ for (i = 0; i < list_count; i++) {
+ SilcUInt16 idp_len;
+ SilcClientID *client_id;
+ SilcClientEntry entry;
+
+ /* Get Client ID */
+ SILC_GET16_MSB(idp_len, client_id_list->data + 2);
+ idp_len += 4;
+ client_id = silc_id_payload_parse_id(client_id_list->data, idp_len);
+ if (!client_id) {
+ silc_buffer_pull(client_id_list, idp_len);
+ continue;
+ }
+
+ /* Check if we have this client cached already. */
+ id_cache = NULL;
+ silc_idcache_find_by_id_one_ext(conn->client_cache, (void *)client_id,
+ NULL, NULL,
+ silc_hash_client_id_compare, NULL,
+ &id_cache);
+
+ /* If we don't have the entry or it has incomplete info, then resolve
+ it from the server. */
+ entry = id_cache ? (SilcClientEntry)id_cache->context : NULL;
+ if (!id_cache || !entry->nickname) {
+
+ if (entry) {
+ if (entry->status & SILC_CLIENT_STATUS_RESOLVING) {
+ entry->status &= ~SILC_CLIENT_STATUS_RESOLVING;
+ silc_free(client_id);
+ silc_buffer_pull(client_id_list, idp_len);
+ continue;
+ }
+
+ entry->status |= SILC_CLIENT_STATUS_RESOLVING;
+ }
+
+ /* No we don't have it, query it from the server. Assemble argument
+ table that will be sent fr the IDENTIFY command later. */
+ res_argv = silc_realloc(res_argv, sizeof(*res_argv) *
+ (res_argc + 1));
+ res_argv_lens = silc_realloc(res_argv_lens, sizeof(*res_argv_lens) *
+ (res_argc + 1));
+ res_argv_types = silc_realloc(res_argv_types, sizeof(*res_argv_types) *
+ (res_argc + 1));
+ res_argv[res_argc] = client_id_list->data;
+ res_argv_lens[res_argc] = idp_len;
+ res_argv_types[res_argc] = res_argc + 5;
+ res_argc++;
+ }
+
+ silc_free(client_id);
+ silc_buffer_pull(client_id_list, idp_len);
+ }
+
+ /* Query the client information from server if the list included clients
+ that we don't know about. */
+ if (res_argc) {
+ SilcBuffer res_cmd;
+
+ /* Send the IDENTIFY command to server */
+ res_cmd = silc_command_payload_encode(SILC_COMMAND_IDENTIFY,
+ res_argc, res_argv, res_argv_lens,
+ res_argv_types, ++conn->cmd_ident);
+ silc_client_packet_send(client, conn->sock, SILC_PACKET_COMMAND,
+ NULL, 0, NULL, NULL, res_cmd->data, res_cmd->len,
+ TRUE);
+
+ /* Register our own command reply for this command */
+ silc_client_command_register(client, SILC_COMMAND_IDENTIFY, NULL, NULL,
+ silc_client_command_reply_identify_i, 0,
+ conn->cmd_ident);
+
+ /* Process the applications request after reply has been received */
+ silc_client_command_pending(conn, SILC_COMMAND_IDENTIFY, conn->cmd_ident,
+ silc_client_command_get_clients_list_callback,
+ (void *)in);
+
+ silc_buffer_push(client_id_list, client_id_list->data -
+ client_id_list->head);
+ silc_buffer_free(res_cmd);
+ silc_free(res_argv);
+ silc_free(res_argv_lens);
+ silc_free(res_argv_types);
+ return;
+ }
+
+ silc_buffer_push(client_id_list, client_id_list->data -
+ client_id_list->head);
+
+ /* We have the clients in cache, get them and call the completion */
+ silc_client_command_get_clients_list_callback((void *)in, NULL);
+}
+
+/* Finds entry for client by the client's ID. Returns the entry or NULL
+ if the entry was not found. */
+
+SilcClientEntry silc_client_get_client_by_id(SilcClient client,
+ SilcClientConnection conn,
+ SilcClientID *client_id)
+{
+ SilcIDCacheEntry id_cache;
+
+ SILC_LOG_DEBUG(("Finding client by ID (%s)",
+ silc_id_render(client_id, SILC_ID_CLIENT)));
+
+ /* Find ID from cache */
+ if (!silc_idcache_find_by_id_one_ext(conn->client_cache, (void *)client_id,
+ NULL, NULL,
+ silc_hash_client_id_compare, NULL,
+ &id_cache))
+ return NULL;
+
+ SILC_LOG_DEBUG(("Found"));
+
+ return (SilcClientEntry)id_cache->context;
+}
+
+typedef struct {
+ SilcClient client;
+ SilcClientConnection conn;
+ SilcClientID *client_id;
+ SilcGetClientCallback completion;
+ void *context;
+} *GetClientByIDInternal;
+
+SILC_CLIENT_CMD_FUNC(get_client_by_id_callback)
+{
+ GetClientByIDInternal i = (GetClientByIDInternal)context;
+ SilcClientEntry entry;
+
+ /* Get the client */
+ entry = silc_client_get_client_by_id(i->client, i->conn, i->client_id);
+ if (entry)
+ i->completion(i->client, i->conn, &entry, 1, i->context);
+ else
+ i->completion(i->client, i->conn, NULL, 0, i->context);
+
+ silc_free(i->client_id);
+ silc_free(i);
+}
+
+/* Same as above but will always resolve the information from the server.
+ Use this only if you know that you don't have the entry and the only
+ thing you know about the client is its ID. */
+
+void silc_client_get_client_by_id_resolve(SilcClient client,
+ SilcClientConnection conn,
+ SilcClientID *client_id,
+ SilcGetClientCallback completion,
+ void *context)
+{
+ SilcBuffer idp;
+ GetClientByIDInternal i = silc_calloc(1, sizeof(*i));
+
+ SILC_LOG_DEBUG(("Start"));
+
+ i->client = client;
+ i->conn = conn;
+ i->client_id = silc_id_dup(client_id, SILC_ID_CLIENT);
+ i->completion = completion;
+ i->context = context;
+
+ /* Register our own command reply for this command */
+ silc_client_command_register(client, SILC_COMMAND_WHOIS, NULL, NULL,
+ silc_client_command_reply_whois_i, 0,
+ ++conn->cmd_ident);
+
+ /* Send the command */
+ idp = silc_id_payload_encode(client_id, SILC_ID_CLIENT);
+ silc_client_command_send(client, conn, SILC_COMMAND_WHOIS, conn->cmd_ident,
+ 1, 3, idp->data, idp->len);
+ silc_buffer_free(idp);
+
+ /* Add pending callback */
+ silc_client_command_pending(conn, SILC_COMMAND_WHOIS, conn->cmd_ident,
+ silc_client_command_get_client_by_id_callback,
+ (void *)i);
+}
+
+
+/******************************************************************************
+
+ Client, Channel and Server entry manipulation
+
+******************************************************************************/
+
+
+/* Creates new client entry and adds it to the ID cache. Returns pointer
+ to the new entry. */
+
+SilcClientEntry
+silc_client_add_client(SilcClient client, SilcClientConnection conn,
+ char *nickname, char *username,
+ char *userinfo, SilcClientID *id, SilcUInt32 mode)
+{
+ SilcClientEntry client_entry;
+ char *nick = NULL;
+
+ SILC_LOG_DEBUG(("Start"));
+
+ /* Save the client infos */
+ client_entry = silc_calloc(1, sizeof(*client_entry));
+ client_entry->id = id;
+ client_entry->valid = TRUE;
+ silc_parse_userfqdn(nickname, &nick, &client_entry->server);
+ silc_parse_userfqdn(username, &client_entry->username,
+ &client_entry->hostname);
+ if (userinfo)
+ client_entry->realname = strdup(userinfo);
+ client_entry->mode = mode;
+ if (nick)
+ client_entry->nickname = strdup(nick);
+ client_entry->channels = silc_hash_table_alloc(1, silc_hash_ptr, NULL, NULL,
+ NULL, NULL, NULL, TRUE);
+
+ /* Format the nickname */
+ silc_client_nickname_format(client, conn, client_entry);
+
+ /* Add client to cache, the non-formatted nickname is saved to cache */
+ if (!silc_idcache_add(conn->client_cache, nick, client_entry->id,
+ (void *)client_entry, 0, NULL)) {
+ silc_free(client_entry->nickname);
+ silc_free(client_entry->username);
+ silc_free(client_entry->hostname);
+ silc_free(client_entry->server);
+ silc_hash_table_free(client_entry->channels);
+ silc_free(client_entry);
+ return NULL;
+ }
+
+ return client_entry;
+}
+
+/* Updates the `client_entry' with the new information sent as argument. */
+
+void silc_client_update_client(SilcClient client,
+ SilcClientConnection conn,
+ SilcClientEntry client_entry,
+ const char *nickname,
+ const char *username,
+ const char *userinfo,
+ SilcUInt32 mode)
+{
+ char *nick = NULL;
+
+ SILC_LOG_DEBUG(("Start"));
+
+ if (!client_entry->username && username)
+ silc_parse_userfqdn(username, &client_entry->username,
+ &client_entry->hostname);
+ if (!client_entry->realname && userinfo)
+ client_entry->realname = strdup(userinfo);
+ if (!client_entry->nickname && nickname) {
+ silc_parse_userfqdn(nickname, &nick, &client_entry->server);
+ client_entry->nickname = strdup(nick);
+ silc_client_nickname_format(client, conn, client_entry);
+ }
+ client_entry->mode = mode;
+
+ if (nick) {
+ /* Remove the old cache entry and create a new one */
+ silc_idcache_del_by_context(conn->client_cache, client_entry);
+ silc_idcache_add(conn->client_cache, nick, client_entry->id,
+ client_entry, 0, NULL);
+ }
+}
+
+/* Deletes the client entry and frees all memory. */
+
+void silc_client_del_client_entry(SilcClient client,
+ SilcClientConnection conn,
+ SilcClientEntry client_entry)
+{
+ SILC_LOG_DEBUG(("Start"));
+
+ silc_free(client_entry->nickname);
+ silc_free(client_entry->username);
+ silc_free(client_entry->realname);
+ silc_free(client_entry->hostname);
+ silc_free(client_entry->server);
+ silc_free(client_entry->id);
+ silc_free(client_entry->fingerprint);
+ silc_hash_table_free(client_entry->channels);
+ if (client_entry->send_key)
+ silc_cipher_free(client_entry->send_key);
+ if (client_entry->receive_key)
+ silc_cipher_free(client_entry->receive_key);
+ silc_free(client_entry->key);
+ silc_client_ftp_session_free_client(conn, client_entry);
+ if (client_entry->ke)
+ silc_client_abort_key_agreement(client, conn, client_entry);
+ silc_free(client_entry);
+}
+
+/* Removes client from the cache by the client entry. */
+
+bool silc_client_del_client(SilcClient client, SilcClientConnection conn,
+ SilcClientEntry client_entry)
+{
+ bool ret = silc_idcache_del_by_context(conn->client_cache, client_entry);
+
+ /* Remove from channels */
+ silc_client_remove_from_channels(client, conn, client_entry);
+
+ /* Free the client entry data */
+ silc_client_del_client_entry(client, conn, client_entry);
+
+ return ret;
+}
+
+/* Add new channel entry to the ID Cache */
+
+SilcChannelEntry silc_client_add_channel(SilcClient client,
+ SilcClientConnection conn,
+ const char *channel_name,
+ SilcUInt32 mode,
+ SilcChannelID *channel_id)
+{
+ SilcChannelEntry channel;
+
+ SILC_LOG_DEBUG(("Start"));
+
+ channel = silc_calloc(1, sizeof(*channel));
+ channel->channel_name = strdup(channel_name);
+ channel->id = channel_id;
+ channel->mode = mode;
+ channel->user_list = silc_hash_table_alloc(1, silc_hash_ptr, NULL, NULL,
+ NULL, NULL, NULL, TRUE);
+
+ /* Put it to the ID cache */
+ if (!silc_idcache_add(conn->channel_cache, channel->channel_name,
+ (void *)channel->id, (void *)channel, 0, NULL)) {
+ silc_free(channel->channel_name);
+ silc_hash_table_free(channel->user_list);
+ silc_free(channel);
+ return NULL;
+ }
+
+ return channel;
+}
+
+/* Foreach callbcak to free all users from the channel when deleting a
+ channel entry. */
+
+static void silc_client_del_channel_foreach(void *key, void *context,
+ void *user_context)
+{
+ SilcChannelUser chu = (SilcChannelUser)context;
+
+ SILC_LOG_DEBUG(("Start"));
+
+ /* Remove the context from the client's channel hash table as that
+ table and channel's user_list hash table share this same context. */
+ silc_hash_table_del(chu->client->channels, chu->channel);
+ silc_free(chu);
+}
+
+/* Removes channel from the cache by the channel entry. */
+
+bool silc_client_del_channel(SilcClient client, SilcClientConnection conn,
+ SilcChannelEntry channel)
+{
+ bool ret = silc_idcache_del_by_context(conn->channel_cache, channel);
+
+ SILC_LOG_DEBUG(("Start"));
+
+ /* Free all client entrys from the users list. The silc_hash_table_free
+ will free all the entries so they are not freed at the foreach
+ callback. */
+ silc_hash_table_foreach(channel->user_list, silc_client_del_channel_foreach,
+ NULL);
+ silc_hash_table_free(channel->user_list);
+
+ silc_free(channel->channel_name);
+ silc_free(channel->id);
+ silc_free(channel->key);
+ if (channel->channel_key)
+ silc_cipher_free(channel->channel_key);
+ if (channel->hmac)
+ silc_hmac_free(channel->hmac);
+ if (channel->old_channel_key)
+ silc_cipher_free(channel->old_channel_key);
+ if (channel->old_hmac)
+ silc_hmac_free(channel->old_hmac);
+ if (channel->rekey_task)
+ silc_schedule_task_del(conn->client->schedule, channel->rekey_task);
+ silc_client_del_channel_private_keys(client, conn, channel);
+ silc_free(channel);
+ return ret;
+}
+
+/* Replaces the channel ID of the `channel' to `new_id'. Returns FALSE
+ if the ID could not be changed. */
+
+bool silc_client_replace_channel_id(SilcClient client,
+ SilcClientConnection conn,
+ SilcChannelEntry channel,
+ SilcChannelID *new_id)
+{
+ if (!new_id)
+ return FALSE;
+
+ SILC_LOG_DEBUG(("Old Channel ID id(%s)",
+ silc_id_render(channel->id, SILC_ID_CHANNEL)));
+ SILC_LOG_DEBUG(("New Channel ID id(%s)",
+ silc_id_render(new_id, SILC_ID_CHANNEL)));
+
+ silc_idcache_del_by_id(conn->channel_cache, channel->id);
+ silc_free(channel->id);
+ channel->id = new_id;
+ return silc_idcache_add(conn->channel_cache, channel->channel_name,
+ (void *)channel->id, (void *)channel, 0, NULL);
+
+}
+
+/* Finds entry for channel by the channel name. Returns the entry or NULL
+ if the entry was not found. It is found only if the client is joined
+ to the channel. */
+
+SilcChannelEntry silc_client_get_channel(SilcClient client,