Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
- Copyright (C) 1997 - 2000 Pekka Riikonen
+ Copyright (C) 1997 - 2001 Pekka Riikonen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
extern char *server_version;
+/* Received notify packet. Server can receive notify packets from router.
+ Server then relays the notify messages to clients if needed. */
+
+void silc_server_notify(SilcServer server,
+ SilcSocketConnection sock,
+ SilcPacketContext *packet)
+{
+ SilcNotifyPayload payload;
+ SilcNotifyType type;
+ SilcArgumentPayload args;
+ SilcChannelID *channel_id, *channel_id2;
+ SilcClientID *client_id, *client_id2;
+ SilcChannelEntry channel;
+ SilcClientEntry client;
+ SilcChannelClientEntry chl;
+ SilcIDCacheEntry cache;
+ unsigned int mode;
+ unsigned char *tmp;
+ unsigned int tmp_len;
+
+ SILC_LOG_DEBUG(("Start"));
+
+ if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
+ packet->src_id_type != SILC_ID_SERVER)
+ return;
+
+ if (!packet->dst_id)
+ return;
+
+ /* If the packet is destined directly to a client then relay the packet
+ before processing it. */
+ if (packet->dst_id_type == SILC_ID_CLIENT) {
+ SilcIDListData idata;
+ SilcSocketConnection dst_sock;
+
+ /* Get the route to the client */
+ dst_sock = silc_server_get_client_route(server, packet->dst_id,
+ packet->dst_id_len, NULL, &idata);
+ if (dst_sock)
+ /* Relay the packet */
+ silc_server_relay_packet(server, dst_sock, idata->send_key,
+ idata->hmac, packet, TRUE);
+ }
+
+ /* If we are router and this packet is not already broadcast packet
+ we will broadcast it. The sending socket really cannot be router or
+ the router is buggy. If this packet is coming from router then it must
+ have the broadcast flag set already and we won't do anything. */
+ if (!server->standalone && server->server_type == SILC_ROUTER &&
+ sock->type == SILC_SOCKET_TYPE_SERVER &&
+ !(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
+ SILC_LOG_DEBUG(("Broadcasting received Notify packet"));
+ silc_server_packet_send(server, server->router->connection, packet->type,
+ packet->flags | SILC_PACKET_FLAG_BROADCAST,
+ packet->buffer->data, packet->buffer->len, FALSE);
+ }
+
+ payload = silc_notify_payload_parse(packet->buffer);
+ if (!payload)
+ return;
+
+ type = silc_notify_get_type(payload);
+ args = silc_notify_get_args(payload);
+ if (!args)
+ goto out;
+
+ switch(type) {
+ case SILC_NOTIFY_TYPE_JOIN:
+ /*
+ * Distribute the notify to local clients on the channel
+ */
+ SILC_LOG_DEBUG(("JOIN notify"));
+
+ /* Get Channel ID */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (!tmp)
+ goto out;
+ channel_id = silc_id_payload_parse_id(tmp, tmp_len);
+ if (!channel_id)
+ goto out;
+
+ /* Get channel entry */
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ channel_id, NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ channel_id, NULL);
+ if (!channel) {
+ silc_free(channel_id);
+ goto out;
+ }
+ }
+ silc_free(channel_id);
+
+ /* Get client ID */
+ tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+ if (!tmp)
+ goto out;
+ client_id = silc_id_payload_parse_id(tmp, tmp_len);
+ if (!client_id)
+ goto out;
+
+ /* Send to channel */
+ silc_server_packet_send_to_channel(server, sock, channel, packet->type,
+ FALSE, packet->buffer->data,
+ packet->buffer->len, FALSE);
+
+ /* If the the client is not in local list we check global list (ie. the
+ channel will be global channel) and if it does not exist then create
+ entry for the client. */
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, NULL);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, NULL);
+ if (!client) {
+ /* If router did not find the client the it is bogus */
+ if (server->server_type == SILC_ROUTER)
+ goto out;
+
+ client =
+ silc_idlist_add_client(server->global_list, NULL, 0, NULL, NULL,
+ silc_id_dup(client_id, SILC_ID_CLIENT),
+ sock->user_data, NULL);
+ if (!client) {
+ silc_free(client_id);
+ goto out;
+ }
+
+ client->data.registered = TRUE;
+ }
+ }
+
+ /* Do not add client to channel if it is there already */
+ if (silc_server_client_on_channel(client, channel))
+ break;
+
+ if (server->server_type == SILC_SERVER &&
+ sock->type == SILC_SOCKET_TYPE_ROUTER)
+ /* The channel is global now */
+ channel->global_users = TRUE;
+
+ /* JOIN the global client to the channel (local clients (if router
+ created the channel) is joined in the pending JOIN command). */
+ chl = silc_calloc(1, sizeof(*chl));
+ chl->client = client;
+ chl->channel = channel;
+ silc_list_add(channel->user_list, chl);
+ silc_list_add(client->channels, chl);
+ silc_free(client_id);
+
+ break;
+
+ case SILC_NOTIFY_TYPE_LEAVE:
+ /*
+ * Distribute the notify to local clients on the channel
+ */
+ SILC_LOG_DEBUG(("LEAVE notify"));
+
+ channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
+ packet->dst_id_type);
+ if (!channel_id)
+ goto out;
+
+ /* Get channel entry */
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ channel_id, NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ channel_id, NULL);
+ if (!channel) {
+ silc_free(channel_id);
+ goto out;
+ }
+ }
+
+ /* Get client ID */
+ tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+ if (!tmp) {
+ silc_free(channel_id);
+ goto out;
+ }
+ client_id = silc_id_payload_parse_id(tmp, tmp_len);
+ if (!client_id) {
+ silc_free(channel_id);
+ goto out;
+ }
+
+ /* Send to channel */
+ silc_server_packet_send_to_channel(server, sock, channel, packet->type,
+ FALSE, packet->buffer->data,
+ packet->buffer->len, FALSE);
+
+ /* Get client entry */
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, NULL);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, NULL);
+ if (!client) {
+ silc_free(client_id);
+ silc_free(channel_id);
+ goto out;
+ }
+ }
+ silc_free(client_id);
+
+ /* Remove the user from channel */
+ silc_server_remove_from_one_channel(server, sock, channel, client, FALSE);
+ break;
+
+ case SILC_NOTIFY_TYPE_SIGNOFF:
+ /*
+ * Distribute the notify to local clients on the channel
+ */
+ SILC_LOG_DEBUG(("SIGNOFF notify"));
+
+ /* Get client ID */
+ tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+ if (!tmp)
+ goto out;
+ client_id = silc_id_payload_parse_id(tmp, tmp_len);
+ if (!client_id)
+ goto out;
+
+ /* Get client entry */
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, &cache);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, &cache);
+ if (!client) {
+ silc_free(client_id);
+ goto out;
+ }
+ }
+ silc_free(client_id);
+
+ /* Get signoff message */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (tmp_len > 128)
+ tmp = NULL;
+
+ /* Remove the client from all channels */
+ silc_server_remove_from_channels(server, NULL, client, TRUE, tmp, TRUE);
+
+ client->data.registered = FALSE;
+ cache->expire = SILC_ID_CACHE_EXPIRE_DEF;
+
+#if 0
+ /* Remove the client entry */
+ if (!silc_idlist_del_client(server->global_list, client))
+ silc_idlist_del_client(server->local_list, client);
+#endif
+ break;
+
+ case SILC_NOTIFY_TYPE_TOPIC_SET:
+ /*
+ * Distribute the notify to local clients on the channel
+ */
+
+ SILC_LOG_DEBUG(("TOPIC SET notify"));
+
+ channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
+ packet->dst_id_type);
+ if (!channel_id)
+ goto out;
+
+ /* Get channel entry */
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ channel_id, NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ channel_id, NULL);
+ if (!channel) {
+ silc_free(channel_id);
+ goto out;
+ }
+ }
+
+ /* Get the topic */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (!tmp) {
+ silc_free(channel_id);
+ goto out;
+ }
+
+ if (channel->topic)
+ silc_free(channel->topic);
+ channel->topic = silc_calloc(tmp_len, sizeof(*channel->topic));
+ memcpy(channel->topic, tmp, tmp_len);
+
+ /* Send the same notify to the channel */
+ silc_server_packet_send_to_channel(server, sock, channel, packet->type,
+ FALSE, packet->buffer->data,
+ packet->buffer->len, FALSE);
+ silc_free(channel_id);
+ break;
+
+ case SILC_NOTIFY_TYPE_NICK_CHANGE:
+ {
+ /*
+ * Distribute the notify to local clients on the channel
+ */
+ unsigned char *id, *id2;
+
+ SILC_LOG_DEBUG(("NICK CHANGE notify"));
+
+ /* Get old client ID */
+ id = silc_argument_get_arg_type(args, 1, &tmp_len);
+ if (!id)
+ goto out;
+ client_id = silc_id_payload_parse_id(id, tmp_len);
+ if (!client_id)
+ goto out;
+
+ /* Get new client ID */
+ id2 = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (!id2)
+ goto out;
+ client_id2 = silc_id_payload_parse_id(id2, tmp_len);
+ if (!client_id2)
+ goto out;
+
+ SILC_LOG_DEBUG(("Old Client ID id(%s)",
+ silc_id_render(client_id, SILC_ID_CLIENT)));
+ SILC_LOG_DEBUG(("New Client ID id(%s)",
+ silc_id_render(client_id2, SILC_ID_CLIENT)));
+
+ /* Replace the Client ID */
+ client = silc_idlist_replace_client_id(server->global_list, client_id,
+ client_id2);
+ if (!client)
+ client = silc_idlist_replace_client_id(server->local_list, client_id,
+ client_id2);
+
+ if (client) {
+ /* The nickname is not valid anymore, set it NULL. This causes that
+ the nickname will be queried if someone wants to know it. */
+ if (client->nickname)
+ silc_free(client->nickname);
+ client->nickname = NULL;
+
+ /* Send the NICK_CHANGE notify type to local clients on the channels
+ this client is joined to. */
+ silc_server_send_notify_on_channels(server, NULL, client,
+ SILC_NOTIFY_TYPE_NICK_CHANGE, 2,
+ id, tmp_len,
+ id2, tmp_len);
+ }
+
+ silc_free(client_id);
+ if (!client)
+ silc_free(client_id2);
+ break;
+ }
+
+ case SILC_NOTIFY_TYPE_CMODE_CHANGE:
+ /*
+ * Distribute the notify to local clients on the channel
+ */
+
+ SILC_LOG_DEBUG(("CMODE CHANGE notify"));
+
+ channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
+ packet->dst_id_type);
+ if (!channel_id)
+ goto out;
+
+ /* Get channel entry */
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ channel_id, NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ channel_id, NULL);
+ if (!channel) {
+ silc_free(channel_id);
+ goto out;
+ }
+ }
+
+ /* Send the same notify to the channel */
+ silc_server_packet_send_to_channel(server, sock, channel, packet->type,
+ FALSE, packet->buffer->data,
+ packet->buffer->len, FALSE);
+
+ /* Get the mode */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (!tmp) {
+ silc_free(channel_id);
+ goto out;
+ }
+
+ SILC_GET32_MSB(mode, tmp);
+
+ /* If the channel had private keys set and the mode was removed then
+ we must re-generate and re-distribute a new channel key */
+ if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY &&
+ !(mode & SILC_CHANNEL_MODE_PRIVKEY)) {
+ /* Re-generate channel key */
+ silc_server_create_channel_key(server, channel, 0);
+
+ /* Send the channel key. This sends it to our local clients and if
+ we are normal server to our router as well. */
+ silc_server_send_channel_key(server, NULL, channel,
+ server->server_type == SILC_ROUTER ?
+ FALSE : !server->standalone);
+ }
+
+ /* Change mode */
+ channel->mode = mode;
+ silc_free(channel_id);
+
+ /* Get the hmac */
+ tmp = silc_argument_get_arg_type(args, 4, &tmp_len);
+ if (tmp) {
+ unsigned char hash[32];
+
+ if (channel->hmac)
+ silc_hmac_free(channel->hmac);
+ if (!silc_hmac_alloc(tmp, NULL, &channel->hmac))
+ goto out;
+
+ /* Set the HMAC key out of current channel key. The client must do
+ this locally. */
+ silc_hash_make(channel->hmac->hash, channel->key, channel->key_len / 8,
+ hash);
+ silc_hmac_set_key(channel->hmac, hash,
+ silc_hash_len(channel->hmac->hash));
+ memset(hash, 0, sizeof(hash));
+ }
+
+ break;
+
+ case SILC_NOTIFY_TYPE_CUMODE_CHANGE:
+ /*
+ * Distribute the notify to local clients on the channel
+ */
+
+ SILC_LOG_DEBUG(("CUMODE CHANGE notify"));
+
+ channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
+ packet->dst_id_type);
+ if (!channel_id)
+ goto out;
+
+ /* Get channel entry */
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ channel_id, NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ channel_id, NULL);
+ if (!channel) {
+ silc_free(channel_id);
+ goto out;
+ }
+ }
+
+ /* Get the mode */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (!tmp) {
+ silc_free(channel_id);
+ goto out;
+ }
+
+ SILC_GET32_MSB(mode, tmp);
+
+ /* Get target client */
+ tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
+ if (!tmp)
+ goto out;
+ client_id = silc_id_payload_parse_id(tmp, tmp_len);
+ if (!client_id)
+ goto out;
+
+ /* Get client entry */
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, NULL);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, NULL);
+ if (!client) {
+ silc_free(client_id);
+ goto out;
+ }
+ }
+ silc_free(client_id);
+
+ /* Get entry to the channel user list */
+ silc_list_start(channel->user_list);
+ while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END)
+ if (chl->client == client) {
+ /* Change the mode */
+ chl->mode = mode;
+ break;
+ }
+
+ /* Send the same notify to the channel */
+ silc_server_packet_send_to_channel(server, sock, channel, packet->type,
+ FALSE, packet->buffer->data,
+ packet->buffer->len, FALSE);
+ silc_free(channel_id);
+ break;
+
+ case SILC_NOTIFY_TYPE_INVITE:
+
+ if (packet->dst_id_type == SILC_ID_CLIENT)
+ goto out;
+
+ SILC_LOG_DEBUG(("INVITE notify"));
+
+ /* Get Channel ID */
+ tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+ if (!tmp)
+ goto out;
+ channel_id = silc_id_payload_parse_id(tmp, tmp_len);
+ if (!channel_id)
+ goto out;
+
+ /* Get channel entry */
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ channel_id, NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ channel_id, NULL);
+ if (!channel) {
+ silc_free(channel_id);
+ goto out;
+ }
+ }
+ silc_free(channel_id);
+
+ /* Get the added invite */
+ tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
+ if (tmp) {
+ if (!channel->invite_list)
+ channel->invite_list = silc_calloc(tmp_len + 2,
+ sizeof(*channel->invite_list));
+ else
+ channel->invite_list = silc_realloc(channel->invite_list,
+ sizeof(*channel->invite_list) *
+ (tmp_len +
+ strlen(channel->invite_list) +
+ 2));
+ if (tmp[tmp_len - 1] == ',')
+ tmp[tmp_len - 1] = '\0';
+
+ strncat(channel->invite_list, tmp, tmp_len);
+ strncat(channel->invite_list, ",", 1);
+ }
+
+ /* Get the deleted invite */
+ tmp = silc_argument_get_arg_type(args, 4, &tmp_len);
+ if (tmp && channel->invite_list) {
+ char *start, *end, *n;
+
+ if (!strncmp(channel->invite_list, tmp,
+ strlen(channel->invite_list) - 1)) {
+ silc_free(channel->invite_list);
+ channel->invite_list = NULL;
+ } else {
+ start = strstr(channel->invite_list, tmp);
+ if (start && strlen(start) >= tmp_len) {
+ end = start + tmp_len;
+ n = silc_calloc(strlen(channel->invite_list) - tmp_len, sizeof(*n));
+ strncat(n, channel->invite_list, start - channel->invite_list);
+ strncat(n, end + 1, ((channel->invite_list +
+ strlen(channel->invite_list)) - end) - 1);
+ silc_free(channel->invite_list);
+ channel->invite_list = n;
+ }
+ }
+ }
+
+ break;
+
+ case SILC_NOTIFY_TYPE_CHANNEL_CHANGE:
+ /*
+ * Distribute to the local clients on the channel and change the
+ * channel ID.
+ */
+
+ SILC_LOG_DEBUG(("CHANNEL CHANGE"));
+
+ if (sock->type != SILC_SOCKET_TYPE_ROUTER)
+ break;
+
+ /* Get the old Channel ID */
+ tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+ if (!tmp)
+ goto out;
+ channel_id = silc_id_payload_parse_id(tmp, tmp_len);
+ if (!channel_id)
+ goto out;
+
+ /* Get the channel entry */
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ channel_id, NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ channel_id, NULL);
+ if (!channel) {
+ silc_free(channel_id);
+ goto out;
+ }
+ }
+
+ /* Send the notify to the channel */
+ silc_server_packet_send_to_channel(server, sock, channel, packet->type,
+ FALSE, packet->buffer->data,
+ packet->buffer->len, FALSE);
+
+ /* Get the new Channel ID */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (!tmp)
+ goto out;
+ channel_id2 = silc_id_payload_parse_id(tmp, tmp_len);
+ if (!channel_id2)
+ goto out;
+
+ 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(channel_id2, SILC_ID_CHANNEL)));
+
+ /* Replace the Channel ID */
+ if (!silc_idlist_replace_channel_id(server->global_list, channel_id,
+ channel_id2))
+ if (!silc_idlist_replace_channel_id(server->local_list, channel_id,
+ channel_id2)) {
+ silc_free(channel_id2);
+ channel_id2 = NULL;
+ }
+
+ if (channel_id2) {
+ SilcBuffer users = NULL;
+
+ /* Re-announce our clients on the channel as the ID has changed now */
+ silc_server_announce_get_channel_users(server, channel, &users);
+ if (users) {
+ silc_buffer_push(users, users->data - users->head);
+ silc_server_packet_send(server, sock,
+ SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
+ users->data, users->len, FALSE);
+ silc_buffer_free(users);
+ }
+ }
+
+ silc_free(channel_id);
+
+ break;
+
+ case SILC_NOTIFY_TYPE_SERVER_SIGNOFF:
+ SILC_LOG_DEBUG(("SERVER SIGNOFF notify (not-impl XXX)"));
+ break;
+
+ case SILC_NOTIFY_TYPE_KICKED:
+ /*
+ * Distribute the notify to local clients on the channel
+ */
+
+ SILC_LOG_DEBUG(("KICKED notify"));
+
+ channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
+ packet->dst_id_type);
+ if (!channel_id)
+ goto out;
+
+ /* Get channel entry */
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ channel_id, NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ channel_id, NULL);
+ if (!channel) {
+ silc_free(channel_id);
+ goto out;
+ }
+ }
+ silc_free(channel_id);
+
+ /* Get client ID */
+ tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+ if (!tmp)
+ goto out;
+ client_id = silc_id_payload_parse_id(tmp, tmp_len);
+ if (!client_id)
+ goto out;
+
+ /* Send to channel */
+ silc_server_packet_send_to_channel(server, sock, channel, packet->type,
+ FALSE, packet->buffer->data,
+ packet->buffer->len, FALSE);
+
+ /* If the the client is not in local list we check global list */
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, NULL);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, NULL);
+ if (!client) {
+ silc_free(client_id);
+ goto out;
+ }
+ }
+
+ /* Remove the client from channel */
+ silc_server_remove_from_one_channel(server, sock, channel, client, FALSE);
+
+ break;
+
+ case SILC_NOTIFY_TYPE_KILLED:
+ {
+ /*
+ * Distribute the notify to local clients on channels
+ */
+ unsigned char *id;
+ unsigned int id_len;
+
+ SILC_LOG_DEBUG(("KILLED notify"));
+
+ /* Get client ID */
+ id = silc_argument_get_arg_type(args, 1, &id_len);
+ if (!id)
+ goto out;
+ client_id = silc_id_payload_parse_id(id, id_len);
+ if (!client_id)
+ goto out;
+
+ /* If the the client is not in local list we check global list */
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, NULL);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, NULL);
+ if (!client) {
+ silc_free(client_id);
+ goto out;
+ }
+ }
+ silc_free(client_id);
+
+ /* If the client is one of ours, then close the connection to the
+ client now. This removes the client from all channels as well. */
+ if (packet->dst_id_type == SILC_ID_CLIENT && client->data.registered &&
+ client->connection) {
+ sock = client->connection;
+ silc_server_free_client_data(server, NULL, client, FALSE, NULL);
+ silc_server_close_connection(server, sock);
+ break;
+ }
+
+ /* Get comment */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (tmp_len > 128)
+ tmp = NULL;
+
+ /* Send the notify to local clients on the channels except to the
+ client who is killed. */
+ silc_server_send_notify_on_channels(server, client, client,
+ SILC_NOTIFY_TYPE_KILLED,
+ tmp ? 2 : 1,
+ id, id_len,
+ tmp, tmp_len);
+
+ /* Remove the client from all channels */
+ silc_server_remove_from_channels(server, NULL, client, FALSE, NULL,
+ FALSE);
+
+ break;
+ }
+
+ case SILC_NOTIFY_TYPE_UMODE_CHANGE:
+ /*
+ * Save the mode of the client.
+ */
+
+ SILC_LOG_DEBUG(("UMODE_CHANGE notify"));
+
+ /* Get client ID */
+ tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+ if (!tmp)
+ goto out;
+ client_id = silc_id_payload_parse_id(tmp, tmp_len);
+ if (!client_id)
+ goto out;
+
+ /* Get client entry */
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, NULL);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, NULL);
+ if (!client) {
+ silc_free(client_id);
+ goto out;
+ }
+ }
+ silc_free(client_id);
+
+ /* Get the mode */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (!tmp)
+ goto out;
+
+ /* Save the mode */
+ SILC_GET32_MSB(client->mode, tmp);
+
+ break;
+
+ case SILC_NOTIFY_TYPE_BAN:
+ /*
+ * Save the ban
+ */
+
+ SILC_LOG_DEBUG(("BAN notify"));
+
+ /* Get Channel ID */
+ tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+ if (!tmp)
+ goto out;
+ channel_id = silc_id_payload_parse_id(tmp, tmp_len);
+ if (!channel_id)
+ goto out;
+
+ /* Get channel entry */
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ channel_id, NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ channel_id, NULL);
+ if (!channel) {
+ silc_free(channel_id);
+ goto out;
+ }
+ }
+ silc_free(channel_id);
+
+ /* Get the new ban and add it to the ban list */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (tmp) {
+ if (!channel->ban_list)
+ channel->ban_list = silc_calloc(tmp_len + 2,
+ sizeof(*channel->ban_list));
+ else
+ channel->ban_list = silc_realloc(channel->ban_list,
+ sizeof(*channel->ban_list) *
+ (tmp_len +
+ strlen(channel->ban_list) + 2));
+ strncat(channel->ban_list, tmp, tmp_len);
+ strncat(channel->ban_list, ",", 1);
+ }
+
+ /* Get the ban to be removed and remove it from the list */
+ tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
+ if (tmp && channel->ban_list) {
+ char *start, *end, *n;
+
+ if (!strcmp(channel->ban_list, tmp)) {
+ silc_free(channel->ban_list);
+ channel->ban_list = NULL;
+ } else {
+ start = strstr(channel->ban_list, tmp);
+ if (start && strlen(start) >= tmp_len) {
+ end = start + tmp_len;
+ n = silc_calloc(strlen(channel->ban_list) - tmp_len, sizeof(*n));
+ strncat(n, channel->ban_list, start - channel->ban_list);
+ strncat(n, end + 1, ((channel->ban_list +
+ strlen(channel->ban_list)) - end) - 1);
+ silc_free(channel->ban_list);
+ channel->ban_list = n;
+ }
+ }
+ }
+
+ break;
+
+ /* Ignore rest of the notify types for now */
+ case SILC_NOTIFY_TYPE_NONE:
+ case SILC_NOTIFY_TYPE_MOTD:
+ break;
+ default:
+ break;
+ }
+
+ out:
+ silc_notify_payload_free(payload);
+}
+
+void silc_server_notify_list(SilcServer server,
+ SilcSocketConnection sock,
+ SilcPacketContext *packet)
+{
+ SilcPacketContext *new;
+ SilcBuffer buffer;
+ unsigned short len;
+
+ SILC_LOG_DEBUG(("Processing New Notify List"));
+
+ if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
+ packet->src_id_type != SILC_ID_SERVER)
+ return;
+
+ /* Make copy of the original packet context, except for the actual
+ data buffer, which we will here now fetch from the original buffer. */
+ new = silc_packet_context_alloc();
+ new->type = SILC_PACKET_NOTIFY;
+ new->flags = packet->flags;
+ new->src_id = packet->src_id;
+ new->src_id_len = packet->src_id_len;
+ new->src_id_type = packet->src_id_type;
+ new->dst_id = packet->dst_id;
+ new->dst_id_len = packet->dst_id_len;
+ new->dst_id_type = packet->dst_id_type;
+
+ buffer = silc_buffer_alloc(1024);
+ new->buffer = buffer;
+
+ while (packet->buffer->len) {
+ SILC_GET16_MSB(len, packet->buffer->data + 2);
+ if (len > packet->buffer->len)
+ break;
+
+ if (len > buffer->truelen) {
+ silc_buffer_free(buffer);
+ buffer = silc_buffer_alloc(1024 + len);
+ }
+
+ silc_buffer_pull_tail(buffer, len);
+ silc_buffer_put(buffer, packet->buffer->data, len);
+
+ /* Process the Notify */
+ silc_server_notify(server, sock, new);
+
+ silc_buffer_push_tail(buffer, len);
+ silc_buffer_pull(packet->buffer, len);
+ }
+
+ silc_buffer_free(buffer);
+ silc_free(new);
+}
+
/* Received private message. This resolves the destination of the message
and sends the packet. This is used by both server and router. If the
destination is our locally connected client this sends the packet to
SilcSocketConnection sock,
SilcPacketContext *packet)
{
- SilcClientID *id;
- SilcServerEntry router;
SilcSocketConnection dst_sock;
- SilcClientEntry client;
SilcIDListData idata;
SILC_LOG_DEBUG(("Start"));
+ if (packet->src_id_type != SILC_ID_CLIENT ||
+ packet->dst_id_type != SILC_ID_CLIENT)
+ return;
+
if (!packet->dst_id)
- goto err;
+ return;
- /* Decode destination Client ID */
- id = silc_id_str2id(packet->dst_id, SILC_ID_CLIENT);
- if (!id) {
- SILC_LOG_ERROR(("Could not decode destination Client ID, dropped"));
- goto err;
- }
+ /* Get the route to the client */
+ dst_sock = silc_server_get_client_route(server, packet->dst_id,
+ packet->dst_id_len, NULL, &idata);
+ if (!dst_sock)
+ return;
- /* If the destination belongs to our server we don't have to route
- the message anywhere but to send it to the local destination. */
- client = silc_idlist_find_client_by_id(server->local_list, id, NULL);
- if (client) {
- /* It exists, now deliver the message to the destination */
- dst_sock = (SilcSocketConnection)client->connection;
+ /* Send the private message */
+ silc_server_send_private_message(server, dst_sock, idata->send_key,
+ idata->hmac, packet);
+}
- /* If we are router and the client has router then the client is in
- our cell but not directly connected to us. */
- if (server->server_type == SILC_ROUTER && client->router) {
- /* We are of course in this case the client's router thus the real
- "router" of the client is the server who owns the client. Thus
- we will send the packet to that server. */
- router = (SilcServerEntry)dst_sock->user_data;
- idata = (SilcIDListData)router;
- //assert(client->router == server->id_entry);
-
- silc_server_send_private_message(server, dst_sock,
- idata->send_key,
- idata->hmac,
- packet);
- return;
- }
+/* Received private message key packet.. This packet is never for us. It is to
+ the client in the packet's destination ID. Sending of this sort of packet
+ equals sending private message, ie. it is sent point to point from
+ one client to another. */
- /* Seems that client really is directly connected to us */
- idata = (SilcIDListData)client;
- silc_server_send_private_message(server, dst_sock,
- idata->send_key,
- idata->hmac, packet);
+void silc_server_private_message_key(SilcServer server,
+ SilcSocketConnection sock,
+ SilcPacketContext *packet)
+{
+ SilcSocketConnection dst_sock;
+ SilcIDListData idata;
+
+ SILC_LOG_DEBUG(("Start"));
+
+ if (packet->src_id_type != SILC_ID_CLIENT ||
+ packet->dst_id_type != SILC_ID_CLIENT)
return;
- }
- /* Destination belongs to someone not in this server. If we are normal
- server our action is to send the packet to our router. */
- if (server->server_type == SILC_SERVER && !server->standalone) {
- router = server->router;
-
- /* Send to primary route */
- if (router) {
- dst_sock = (SilcSocketConnection)router->connection;
- idata = (SilcIDListData)router;
- silc_server_send_private_message(server, dst_sock,
- idata->send_key,
- idata->hmac, packet);
- }
+ if (!packet->dst_id)
return;
- }
- /* We are router and we will perform route lookup for the destination
- and send the message to fastest route. */
- if (server->server_type == SILC_ROUTER && !server->standalone) {
- /* Check first that the ID is valid */
- client = silc_idlist_find_client_by_id(server->global_list, id, NULL);
- if (client) {
- dst_sock = silc_server_route_get(server, id, SILC_ID_CLIENT);
- router = (SilcServerEntry)dst_sock->user_data;
- idata = (SilcIDListData)router;
-
- /* Get fastest route and send packet. */
- if (router)
- silc_server_send_private_message(server, dst_sock,
- idata->send_key,
- idata->hmac, packet);
- return;
- }
- }
+ /* Get the route to the client */
+ dst_sock = silc_server_get_client_route(server, packet->dst_id,
+ packet->dst_id_len, NULL, &idata);
+ if (!dst_sock)
+ return;
- err:
- silc_server_send_error(server, sock,
- "No such nickname: Private message not sent");
+ /* Relay the packet */
+ silc_server_relay_packet(server, dst_sock, idata->send_key,
+ idata->hmac, packet, FALSE);
}
/* Processes incoming command reply packet. The command reply packet may
if (packet->dst_id_type == SILC_ID_CLIENT) {
/* Destination must be one of ours */
- id = silc_id_str2id(packet->dst_id, SILC_ID_CLIENT);
+ id = silc_id_str2id(packet->dst_id, packet->dst_id_len, SILC_ID_CLIENT);
+ if (!id)
+ return;
client = silc_idlist_find_client_by_id(server->local_list, id, NULL);
if (!client) {
SILC_LOG_ERROR(("Cannot process command reply to unknown client"));
}
/* Find channel entry */
- id = silc_id_str2id(packet->dst_id, SILC_ID_CHANNEL);
+ id = silc_id_str2id(packet->dst_id, packet->dst_id_len, SILC_ID_CHANNEL);
+ if (!id)
+ goto out;
channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
if (!channel) {
channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
from router we won't do the check as the message is from client that
we don't know about. Also, if the original sender is not client
(as it can be server as well) we don't do the check. */
- sender = silc_id_str2id(packet->src_id, packet->src_id_type);
+ sender = silc_id_str2id(packet->src_id, packet->src_id_len,
+ packet->src_id_type);
+ if (!sender)
+ goto out;
if (sock->type != SILC_SOCKET_TYPE_ROUTER &&
packet->src_id_type == SILC_ID_CLIENT) {
silc_list_start(channel->user_list);
if (chl->client && !SILC_ID_CLIENT_COMPARE(chl->client->id, sender))
break;
}
- if (chl == SILC_LIST_END)
+ if (chl == SILC_LIST_END) {
+ SILC_LOG_DEBUG(("Client not on channel"));
goto out;
+ }
+ }
+
+ /* If we are router and the packet came from router and private key
+ has not been set for the channel then we must encrypt the packet
+ as it was decrypted with the session key shared between us and the
+ router which sent it. This is so, because cells does not share the
+ same channel key */
+ if (server->server_type == SILC_ROUTER &&
+ sock->type == SILC_SOCKET_TYPE_ROUTER &&
+ !(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
+ SilcBuffer chp;
+ unsigned int iv_len, i;
+ unsigned short data_len, flags;
+
+ iv_len = silc_cipher_get_block_len(channel->channel_key);
+ if (channel->iv[0] == '\0')
+ for (i = 0; i < iv_len; i++) channel->iv[i] =
+ silc_rng_get_byte(server->rng);
+ else
+ silc_hash_make(server->md5hash, channel->iv, iv_len, channel->iv);
+
+ /* Encode new payload. This encrypts it also. */
+ SILC_GET16_MSB(flags, packet->buffer->data);
+ SILC_GET16_MSB(data_len, packet->buffer->data + 2);
+ chp = silc_channel_message_payload_encode(flags, data_len,
+ packet->buffer->data + 4,
+ iv_len, channel->iv,
+ channel->channel_key,
+ channel->hmac);
+ silc_buffer_put(packet->buffer, chp->data, chp->len);
+ silc_buffer_free(chp);
}
/* Distribute the packet to our local clients. This will send the
SilcBuffer buffer = packet->buffer;
SilcChannelEntry channel;
- if (packet->src_id_type != SILC_ID_SERVER)
+ if (packet->src_id_type != SILC_ID_SERVER ||
+ (server->server_type == SILC_ROUTER &&
+ sock->type == SILC_SOCKET_TYPE_ROUTER))
return;
/* Save the channel key */
/* Distribute the key to everybody who is on the channel. If we are router
we will also send it to locally connected servers. */
- silc_server_send_channel_key(server, channel, FALSE);
-}
-
-/* Received packet to replace a ID. This checks that the requested ID
- exists and replaces it with the new one. */
-
-void silc_server_replace_id(SilcServer server,
- SilcSocketConnection sock,
- SilcPacketContext *packet)
-{
- SilcBuffer buffer = packet->buffer;
- unsigned char *old_id = NULL, *new_id = NULL;
- SilcIdType old_id_type, new_id_type;
- unsigned short old_id_len, new_id_len;
- void *id = NULL, *id2 = NULL;
-
- if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
- packet->src_id_type == SILC_ID_CLIENT)
- return;
-
- SILC_LOG_DEBUG(("Replacing ID"));
-
- silc_buffer_unformat(buffer,
- SILC_STR_UI_SHORT(&old_id_type),
- SILC_STR_UI16_NSTRING_ALLOC(&old_id, &old_id_len),
- SILC_STR_UI_SHORT(&new_id_type),
- SILC_STR_UI16_NSTRING_ALLOC(&new_id, &new_id_len),
- SILC_STR_END);
-
- if (old_id_type != new_id_type)
- goto out;
-
- if (old_id_len != silc_id_get_len(old_id_type) ||
- new_id_len != silc_id_get_len(new_id_type))
- goto out;
-
- id = silc_id_str2id(old_id, old_id_type);
- if (!id)
- goto out;
-
- id2 = silc_id_str2id(new_id, new_id_type);
- if (!id2)
- goto out;
-
- /* If we are router and this packet is not already broadcast packet
- we will broadcast it. The sending socket really cannot be router or
- the router is buggy. If this packet is coming from router then it must
- have the broadcast flag set already and we won't do anything. */
- if (server->server_type == SILC_ROUTER &&
- sock->type == SILC_SOCKET_TYPE_SERVER &&
- !(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
- SILC_LOG_DEBUG(("Broadcasting received Replace ID packet"));
- silc_server_packet_send(server, server->router->connection, packet->type,
- packet->flags | SILC_PACKET_FLAG_BROADCAST,
- buffer->data, buffer->len, FALSE);
- }
-
- /* Replace the old ID */
- switch(old_id_type) {
- case SILC_ID_CLIENT:
- SILC_LOG_DEBUG(("Old Client ID id(%s)",
- silc_id_render(id, SILC_ID_CLIENT)));
- SILC_LOG_DEBUG(("New Client ID id(%s)",
- silc_id_render(id2, SILC_ID_CLIENT)));
- if (silc_idlist_replace_client_id(server->local_list, id, id2) == NULL)
- if (server->server_type == SILC_ROUTER)
- silc_idlist_replace_client_id(server->global_list, id, id2);
- break;
-
- case SILC_ID_SERVER:
- SILC_LOG_DEBUG(("Old Server ID id(%s)",
- silc_id_render(id, SILC_ID_CLIENT)));
- SILC_LOG_DEBUG(("New Server ID id(%s)",
- silc_id_render(id2, SILC_ID_CLIENT)));
- if (silc_idlist_replace_server_id(server->local_list, id, id2) == NULL)
- if (server->server_type == SILC_ROUTER)
- silc_idlist_replace_server_id(server->global_list, id, id2);
- break;
-
- case SILC_ID_CHANNEL:
- /* XXX Hmm... Basically this cannot occur. Channel ID's cannot be
- re-generated. */
- silc_free(id2);
- break;
-
- default:
- silc_free(id2);
- break;
- }
-
- out:
- if (id)
- silc_free(id);
- if (old_id)
- silc_free(old_id);
- if (new_id)
- silc_free(new_id);
+ silc_server_send_channel_key(server, sock, channel, FALSE);
}
-
/* Received New Client packet and processes it. Creates Client ID for the
client. Client becomes registered after calling this functions. */
SilcBuffer reply;
SilcIDListData idata;
char *username = NULL, *realname = NULL, *id_string;
+ int ret;
SILC_LOG_DEBUG(("Creating new client"));
}
/* Parse incoming packet */
- silc_buffer_unformat(buffer,
- SILC_STR_UI16_STRING_ALLOC(&username),
- SILC_STR_UI16_STRING_ALLOC(&realname),
- SILC_STR_END);
+ ret = silc_buffer_unformat(buffer,
+ SILC_STR_UI16_STRING_ALLOC(&username),
+ SILC_STR_UI16_STRING_ALLOC(&realname),
+ SILC_STR_END);
+ if (ret == -1) {
+ if (username)
+ silc_free(username);
+ if (realname)
+ silc_free(realname);
+ return NULL;
+ }
+
+ if (!username) {
+ silc_free(username);
+ if (realname)
+ silc_free(realname);
+ silc_server_disconnect_remote(server, sock, "Server closed connection: "
+ "Incomplete client information");
+ return NULL;
+ }
/* Create Client ID */
silc_id_create_client_id(server->id, server->rng, server->md5hash,
username, &client_id);
+ if (strlen(username) > 128)
+ username[127] = '\0';
+
/* Update client entry */
idata->registered = TRUE;
client->nickname = strdup(username);
client->username = username;
- client->userinfo = realname;
+ client->userinfo = realname ? realname : strdup(" ");
client->id = client_id;
/* Update the cache entry */
("Your host is %s, running version %s",
server->config->server_info->server_name,
server_version));
+ if (server->server_type == SILC_ROUTER) {
+ SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
+ ("There are %d clients on %d servers in SILC "
+ "Network", server->stat.clients,
+ server->stat.servers + 1));
+ SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
+ ("There are %d clients on %d server in our cell",
+ server->stat.cell_clients,
+ server->stat.cell_servers + 1));
+ SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
+ ("I have %d clients, %d channels, %d servers and "
+ "%d routers",
+ server->stat.my_clients,
+ server->stat.my_channels,
+ server->stat.my_servers,
+ server->stat.my_routers));
+ SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
+ ("%d server operators and %d router operators "
+ "online",
+ server->stat.my_server_ops,
+ server->stat.my_router_ops));
+ } else {
+ SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
+ ("I have %d clients and %d channels formed",
+ server->stat.my_clients,
+ server->stat.my_channels));
+ SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
+ ("%d operators online",
+ server->stat.my_server_ops));
+ }
SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
("Your connection is secured with %s cipher, "
"key length %d bits",
SilcServerID *server_id;
SilcIDListData idata;
unsigned char *server_name, *id_string;
- unsigned short id_len;
+ unsigned short id_len, name_len;
+ int ret;
SILC_LOG_DEBUG(("Creating new server"));
}
/* Parse the incoming packet */
- silc_buffer_unformat(buffer,
- SILC_STR_UI16_NSTRING_ALLOC(&id_string, &id_len),
- SILC_STR_UI16_STRING_ALLOC(&server_name),
- SILC_STR_END);
+ ret = silc_buffer_unformat(buffer,
+ SILC_STR_UI16_NSTRING_ALLOC(&id_string, &id_len),
+ SILC_STR_UI16_NSTRING_ALLOC(&server_name,
+ &name_len),
+ SILC_STR_END);
+ if (ret == -1) {
+ if (id_string)
+ silc_free(id_string);
+ if (server_name)
+ silc_free(server_name);
+ return NULL;
+ }
if (id_len > buffer->len) {
silc_free(id_string);
return NULL;
}
+ if (name_len > 256)
+ server_name[255] = '\0';
+
/* Get Server ID */
- server_id = silc_id_str2id(id_string, SILC_ID_SERVER);
+ server_id = silc_id_str2id(id_string, id_len, SILC_ID_SERVER);
+ if (!server_id) {
+ silc_free(id_string);
+ silc_free(server_name);
+ return NULL;
+ }
silc_free(id_string);
/* Update client entry */
cache->id = (void *)server_id;
cache->type = SILC_ID_SERVER;
cache->data = server_name;
+ cache->data_len = strlen(server_name);
silc_idcache_sort_by_data(server->local_list->servers);
/* Distribute the information about new server in the SILC network
TRUE, new_server->id, SILC_ID_SERVER,
SILC_ID_SERVER_LEN);
+ if (server->server_type == SILC_ROUTER)
+ server->stat.cell_servers++;
+
return new_server;
}
/* Processes incoming New ID packet. New ID Payload is used to distribute
information about newly registered clients and servers. */
-void silc_server_new_id(SilcServer server, SilcSocketConnection sock,
- SilcPacketContext *packet)
+static void silc_server_new_id_real(SilcServer server,
+ SilcSocketConnection sock,
+ SilcPacketContext *packet,
+ int broadcast)
{
SilcBuffer buffer = packet->buffer;
SilcIDList id_list;
- SilcServerEntry tmpserver, router;
+ SilcServerEntry router;
SilcSocketConnection router_sock;
SilcIDPayload idp;
SilcIdType id_type;
unsigned char *hash = NULL;
- void *id, *tmpid;
+ void *id;
SILC_LOG_DEBUG(("Processing new ID"));
/* If the sender of this packet is server and we are router we need to
broadcast this packet to other routers in the network. */
- if (!server->standalone && server->server_type == SILC_ROUTER &&
+ if (broadcast && !server->standalone && server->server_type == SILC_ROUTER &&
sock->type == SILC_SOCKET_TYPE_SERVER &&
!(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
SILC_LOG_DEBUG(("Broadcasting received New ID packet"));
buffer->data, buffer->len, FALSE);
}
-#if 0
- /* If the packet is originated from the one who sent it to us we know
- that the ID belongs to our cell, unless the sender was router. */
- tmpid = silc_id_str2id(packet->src_id, SILC_ID_SERVER);
- tmpserver = (SilcServerEntry)sock->user_data;
-
- if (!SILC_ID_SERVER_COMPARE(tmpid, tmpserver->id) &&
- sock->type == SILC_SOCKET_TYPE_SERVER) {
- id_list = server->local_list;
- router_sock = sock;
- router = sock->user_data;
- /* router = server->id_entry; */
- } else {
- id_list = server->global_list;
- router_sock = (SilcSocketConnection)server->router->connection;
- router = server->router;
- }
-
- silc_free(tmpid);
-#endif
-
if (sock->type == SILC_SOCKET_TYPE_SERVER)
id_list = server->local_list;
else
list. The client is put to global list and we will take the hash
value of the Client ID and save it to the ID Cache system for fast
searching in the future. */
- hash = silc_calloc(sizeof(((SilcClientID *)id)->hash),
+ hash = silc_calloc(sizeof(((SilcClientID *)id)->hash),
sizeof(unsigned char));
memcpy(hash, ((SilcClientID *)id)->hash,
sizeof(((SilcClientID *)id)->hash));
- entry = silc_idlist_add_client(id_list, hash, NULL, NULL, id,
- router, router_sock);
+ entry = silc_idlist_add_client(id_list, hash,
+ sizeof(((SilcClientID *)id)->hash),
+ NULL, NULL, id, router, NULL);
entry->nickname = NULL;
+ entry->data.registered = TRUE;
-#if 0
- /* XXX Adding two ID's with same IP number replaces the old entry thus
- gives wrong route. Thus, now disabled until figured out a better way
- to do this or when removed the whole thing. This could be removed
- because entry->router->connection gives always the most optimal route
- for the ID anyway (unless new routes (faster perhaps) are established
- after receiving this ID, this we don't know however). */
- /* Add route cache for this ID */
- silc_server_route_add(silc_server_route_hash(
- ((SilcClientID *)id)->ip.s_addr,
- server->id->port), ((SilcClientID *)id)->ip.s_addr,
- router);
-#endif
+ if (sock->type == SILC_SOCKET_TYPE_SERVER)
+ server->stat.cell_clients++;
+ server->stat.clients++;
}
break;
list. Cell wide information however is kept in the local list. */
silc_idlist_add_server(id_list, NULL, 0, id, router, router_sock);
-#if 0
- /* Add route cache for this ID */
- silc_server_route_add(silc_server_route_hash(
- ((SilcServerID *)id)->ip.s_addr,
- ((SilcServerID *)id)->port),
- ((SilcServerID *)id)->ip.s_addr,
- router);
-#endif
+ if (sock->type == SILC_SOCKET_TYPE_SERVER)
+ server->stat.cell_servers++;
+ server->stat.servers++;
break;
case SILC_ID_CHANNEL:
silc_id_payload_free(idp);
}
-/* Received Remove Channel User packet to remove a user from a channel.
- Routers notify other routers that user has left a channel. Client must
- not send this packet.. Normal server may send this packet but must not
- receive it. */
-void silc_server_remove_channel_user(SilcServer server,
- SilcSocketConnection sock,
- SilcPacketContext *packet)
-{
- SilcBuffer buffer = packet->buffer;
- unsigned char *tmp1 = NULL, *tmp2 = NULL;
- SilcClientID *client_id = NULL;
- SilcChannelID *channel_id = NULL;
- SilcChannelEntry channel;
- SilcClientEntry client;
+/* Processes incoming New ID packet. New ID Payload is used to distribute
+ information about newly registered clients and servers. */
- SILC_LOG_DEBUG(("Removing user from channel"));
+void silc_server_new_id(SilcServer server, SilcSocketConnection sock,
+ SilcPacketContext *packet)
+{
+ silc_server_new_id_real(server, sock, packet, TRUE);
+}
- if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
- server->server_type == SILC_SERVER)
- return;
+/* Receoved New Id List packet, list of New ID payloads inside one
+ packet. Process the New ID payloads one by one. */
- silc_buffer_unformat(buffer,
- SILC_STR_UI16_STRING_ALLOC(&tmp1),
- SILC_STR_UI16_STRING_ALLOC(&tmp2),
- SILC_STR_END);
+void silc_server_new_id_list(SilcServer server, SilcSocketConnection sock,
+ SilcPacketContext *packet)
+{
+ SilcPacketContext *new_id;
+ SilcBuffer idp;
+ unsigned short id_len;
- if (!tmp1 || !tmp2)
- goto out;
+ SILC_LOG_DEBUG(("Processing New ID List"));
- client_id = silc_id_str2id(tmp1, SILC_ID_CLIENT);
- channel_id = silc_id_str2id(tmp2, SILC_ID_CHANNEL);
- if (!client_id || !channel_id)
- goto out;
+ if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
+ packet->src_id_type != SILC_ID_SERVER)
+ return;
- /* If we are router and this packet is not already broadcast packet
- we will broadcast it. The sending socket really cannot be router or
- the router is buggy. If this packet is coming from router then it must
- have the broadcast flag set already and we won't do anything. */
+ /* If the sender of this packet is server and we are router we need to
+ broadcast this packet to other routers in the network. Broadcast
+ this list packet instead of multiple New ID packets. */
if (!server->standalone && server->server_type == SILC_ROUTER &&
sock->type == SILC_SOCKET_TYPE_SERVER &&
!(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
- SILC_LOG_DEBUG(("Broadcasting received Remove Channel User packet"));
- silc_server_packet_send(server, server->router->connection, packet->type,
- packet->flags | SILC_PACKET_FLAG_BROADCAST,
- buffer->data, buffer->len, FALSE);
- }
-
- /* Get channel entry */
- channel = silc_idlist_find_channel_by_id(server->local_list,
- channel_id, NULL);
- if (!channel) {
- channel = silc_idlist_find_channel_by_id(server->global_list,
- channel_id, NULL);
- if (!channel)
- goto out;
+ SILC_LOG_DEBUG(("Broadcasting received New ID List packet"));
+ silc_server_packet_send(server, server->router->connection,
+ packet->type,
+ packet->flags | SILC_PACKET_FLAG_BROADCAST,
+ packet->buffer->data, packet->buffer->len, FALSE);
}
- /* Get client entry */
- client = silc_idlist_find_client_by_id(server->local_list, client_id, NULL);
- if (!client) {
- client = silc_idlist_find_client_by_id(server->global_list,
- client_id, NULL);
- if (!client)
- goto out;
+ /* Make copy of the original packet context, except for the actual
+ data buffer, which we will here now fetch from the original buffer. */
+ new_id = silc_packet_context_alloc();
+ new_id->type = SILC_PACKET_NEW_ID;
+ new_id->flags = packet->flags;
+ new_id->src_id = packet->src_id;
+ new_id->src_id_len = packet->src_id_len;
+ new_id->src_id_type = packet->src_id_type;
+ new_id->dst_id = packet->dst_id;
+ new_id->dst_id_len = packet->dst_id_len;
+ new_id->dst_id_type = packet->dst_id_type;
+
+ idp = silc_buffer_alloc(256);
+ new_id->buffer = idp;
+
+ while (packet->buffer->len) {
+ SILC_GET16_MSB(id_len, packet->buffer->data + 2);
+ if ((id_len > packet->buffer->len) ||
+ (id_len > idp->truelen))
+ break;
+
+ silc_buffer_pull_tail(idp, 4 + id_len);
+ silc_buffer_put(idp, packet->buffer->data, 4 + id_len);
+
+ /* Process the New ID */
+ silc_server_new_id_real(server, sock, new_id, FALSE);
+
+ silc_buffer_push_tail(idp, 4 + id_len);
+ silc_buffer_pull(packet->buffer, 4 + id_len);
}
- /* Remove from channel */
- silc_server_remove_from_one_channel(server, sock, channel, client, FALSE);
-
- out:
- if (tmp1)
- silc_free(tmp1);
- if (tmp2)
- silc_free(tmp2);
- if (client_id)
- silc_free(client_id);
- if (channel_id)
- silc_free(channel_id);
+ silc_buffer_free(idp);
+ silc_free(new_id);
}
/* Received New Channel packet. Information about new channels in the
network are distributed using this packet. Save the information about
- the new channel. */
+ the new channel. This usually comes from router but also normal server
+ can send this to notify channels it has when it connects to us. */
void silc_server_new_channel(SilcServer server,
SilcSocketConnection sock,
SilcPacketContext *packet)
{
- unsigned char *id;
+ SilcChannelPayload payload;
SilcChannelID *channel_id;
- unsigned short channel_id_len;
char *channel_name;
+ unsigned int name_len;
+ unsigned char *id;
+ unsigned int id_len;
+ unsigned int mode;
SILC_LOG_DEBUG(("Processing New Channel"));
- if (sock->type != SILC_SOCKET_TYPE_ROUTER ||
- server->server_type == SILC_SERVER ||
- packet->src_id_type != SILC_ID_SERVER)
+ if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
+ packet->src_id_type != SILC_ID_SERVER ||
+ server->server_type == SILC_SERVER)
return;
- /* Parse payload */
- if (!silc_buffer_unformat(packet->buffer,
- SILC_STR_UI16_STRING_ALLOC(&channel_name),
- SILC_STR_UI16_NSTRING_ALLOC(&id, &channel_id_len),
- SILC_STR_END))
+ /* Parse the channel payload */
+ payload = silc_channel_payload_parse(packet->buffer);
+ if (!payload)
return;
- if (!channel_name || !id)
- return;
-
- /* Decode the channel ID */
- channel_id = silc_id_str2id(id, SILC_ID_CHANNEL);
- if (!channel_id)
- return;
- silc_free(id);
-
- SILC_LOG_DEBUG(("New channel id(%s) from [Router] %s",
- silc_id_render(channel_id, SILC_ID_CHANNEL),
- sock->hostname));
-
- /* Add the new channel. Add it always to global list since if we receive
- this packet then it cannot be created by ourselves but some other
- router hence global channel. */
- silc_idlist_add_channel(server->global_list, channel_name, 0, channel_id,
- server->router->connection, NULL);
-}
-
-/* Received notify packet. Server can receive notify packets from router.
- Server then relays the notify messages to clients if needed. */
-
-void silc_server_notify(SilcServer server,
- SilcSocketConnection sock,
- SilcPacketContext *packet)
-{
- SilcNotifyPayload payload;
- SilcNotifyType type;
- SilcArgumentPayload args;
- SilcChannelID *channel_id;
- SilcChannelEntry channel;
-
- SILC_LOG_DEBUG(("Start"));
-
- if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
- packet->src_id_type != SILC_ID_SERVER)
+ /* Get the channel ID */
+ channel_id = silc_channel_get_id_parse(payload);
+ if (!channel_id) {
+ silc_channel_payload_free(payload);
return;
+ }
- /* XXX: For now we expect that the we are normal server and that the
- sender is router. Server could send (protocol allows it) notify to
- router but we don't support it yet. */
- if (server->server_type != SILC_SERVER &&
- sock->type != SILC_SOCKET_TYPE_ROUTER)
- return;
+ channel_name = silc_channel_get_name(payload, &name_len);
+ if (name_len > 256)
+ channel_name[255] = '\0';
- payload = silc_notify_payload_parse(packet->buffer);
- if (!payload)
- return;
+ id = silc_channel_get_id(payload, &id_len);
- type = silc_notify_get_type(payload);
- args = silc_notify_get_args(payload);
- if (!args)
- goto out;
+ if (sock->type == SILC_SOCKET_TYPE_ROUTER) {
+ /* Add the server to global list as it is coming from router. It
+ cannot be our own channel as it is coming from router. */
- switch(type) {
- case SILC_NOTIFY_TYPE_JOIN:
- /*
- * Distribute the notify to local clients on the channel
- */
+ SILC_LOG_DEBUG(("New channel id(%s) from [Router] %s",
+ silc_id_render(channel_id, SILC_ID_CHANNEL),
+ sock->hostname));
+
+ silc_idlist_add_channel(server->global_list, strdup(channel_name),
+ 0, channel_id, server->router->connection,
+ NULL, NULL);
- channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_type);
- if (!channel_id)
- goto out;
+ server->stat.channels++;
+ } else {
+ /* The channel is coming from our server, thus it is in our cell
+ we will add it to our local list. */
+ SilcChannelEntry channel;
+ SilcBuffer chk;
+
+ SILC_LOG_DEBUG(("New channel id(%s) from [Server] %s",
+ silc_id_render(channel_id, SILC_ID_CHANNEL),
+ sock->hostname));
+
+ /* Check that we don't already have this channel */
+ channel = silc_idlist_find_channel_by_name(server->local_list,
+ channel_name, NULL);
+ if (!channel)
+ channel = silc_idlist_find_channel_by_name(server->global_list,
+ channel_name, NULL);
- /* Get channel entry */
- channel = silc_idlist_find_channel_by_id(server->local_list,
- channel_id, NULL);
+ /* If the channel does not exist, then create it. We create the channel
+ with the channel ID provided by the server. This creates a new
+ key to the channel as well that we will send to the server. */
if (!channel) {
- silc_free(channel_id);
- goto out;
- }
-
- channel->global_users = TRUE;
+ channel = silc_server_create_new_channel_with_id(server, NULL, NULL,
+ channel_name,
+ channel_id, FALSE);
+ if (!channel) {
+ silc_channel_payload_free(payload);
+ silc_free(channel_id);
+ return;
+ }
+
+ /* Send the new channel key to the server */
+ chk = silc_channel_key_payload_encode(id_len, id,
+ strlen(channel->channel_key->
+ cipher->name),
+ channel->channel_key->cipher->name,
+ channel->key_len / 8,
+ channel->key);
+ silc_server_packet_send(server, sock, SILC_PACKET_CHANNEL_KEY, 0,
+ chk->data, chk->len, FALSE);
+ silc_buffer_free(chk);
+
+ } else {
+ /* The channel exist by that name, check whether the ID's match.
+ If they don't then we'll force the server to use the ID we have.
+ We also create a new key for the channel. */
+ SilcBuffer users = NULL;
+
+ if (!channel->id)
+ channel_id = silc_id_dup(channel_id, SILC_ID_CHANNEL);
+
+ if (SILC_ID_CHANNEL_COMPARE(channel_id, channel->id)) {
+ /* They don't match, send CHANNEL_CHANGE notify to the server to
+ force the ID change. */
+ SILC_LOG_DEBUG(("Forcing the server to change Channel ID"));
+ silc_server_send_notify_channel_change(server, sock, FALSE,
+ channel_id,
+ channel->id,
+ SILC_ID_CHANNEL_LEN);
+ }
+
+ /* If the mode is different from what we have then enforce the
+ mode change. */
+ mode = silc_channel_get_mode(payload);
+ if (channel->mode != mode) {
+ SILC_LOG_DEBUG(("Forcing the server to change channel mode"));
+ silc_server_send_notify_cmode(server, sock, FALSE, channel,
+ channel->mode, server->id,
+ SILC_ID_SERVER, SILC_ID_SERVER_LEN,
+ channel->cipher, channel->hmac_name);
+ }
+
+ /* Create new key for the channel and send it to the server and
+ everybody else possibly on the channel. */
+
+ if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
+ silc_server_create_channel_key(server, channel, 0);
+
+ /* Send to the channel */
+ silc_server_send_channel_key(server, sock, channel, FALSE);
+ id = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
+ id_len = SILC_ID_CHANNEL_LEN;
+
+ /* Send to the server */
+ chk = silc_channel_key_payload_encode(id_len, id,
+ strlen(channel->channel_key->
+ cipher->name),
+ channel->channel_key->
+ cipher->name,
+ channel->key_len / 8,
+ channel->key);
+ silc_server_packet_send(server, sock, SILC_PACKET_CHANNEL_KEY, 0,
+ chk->data, chk->len, FALSE);
+ silc_buffer_free(chk);
+ silc_free(id);
+ }
- /* Send to channel */
- silc_server_packet_send_to_channel(server, channel, packet->type, FALSE,
- packet->buffer->data,
- packet->buffer->len, FALSE);
- break;
-
- case SILC_NOTIFY_TYPE_LEAVE:
- break;
-
- case SILC_NOTIFY_TYPE_SIGNOFF:
- break;
+ silc_free(channel_id);
- /* Ignore rest notify types for now */
- case SILC_NOTIFY_TYPE_NONE:
- case SILC_NOTIFY_TYPE_INVITE:
- case SILC_NOTIFY_TYPE_TOPIC_SET:
- case SILC_NOTIFY_TYPE_CMODE_CHANGE:
- case SILC_NOTIFY_TYPE_CUMODE_CHANGE:
- case SILC_NOTIFY_TYPE_MOTD:
- default:
- break;
+ /* Since the channel is coming from server and we also know about it
+ then send the JOIN notify to the server so that it see's our
+ users on the channel "joining" the channel. */
+ silc_server_announce_get_channel_users(server, channel, &users);
+ if (users) {
+ silc_buffer_push(users, users->data - users->head);
+ silc_server_packet_send(server, sock,
+ SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
+ users->data, users->len, FALSE);
+ silc_buffer_free(users);
+ }
+ }
}
- out:
- silc_notify_payload_free(payload);
+ silc_channel_payload_free(payload);
}
-/* Received new channel user packet. Information about new users on a
- channel are distributed between routers using this packet. The
- router receiving this will redistribute it and also sent JOIN notify
- to local clients on the same channel. Normal server sends JOIN notify
- to its local clients on the channel. */
+/* Received New Channel List packet, list of New Channel List payloads inside
+ one packet. Process the New Channel payloads one by one. */
-void silc_server_new_channel_user(SilcServer server,
+void silc_server_new_channel_list(SilcServer server,
SilcSocketConnection sock,
SilcPacketContext *packet)
{
- unsigned char *tmpid1, *tmpid2;
- SilcClientID *client_id = NULL;
- SilcChannelID *channel_id = NULL;
- unsigned short channel_id_len;
- unsigned short client_id_len;
- SilcClientEntry client;
- SilcChannelEntry channel;
- SilcChannelClientEntry chl;
- SilcIDList id_list;
- SilcServerEntry tmpserver, router;
- SilcSocketConnection router_sock;
- SilcBuffer clidp;
- void *tmpid;
+ SilcPacketContext *new;
+ SilcBuffer buffer;
+ unsigned short len1, len2;
- SILC_LOG_DEBUG(("Start"));
+ SILC_LOG_DEBUG(("Processing New Channel List"));
if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
- server->server_type != SILC_ROUTER ||
- packet->src_id_type != SILC_ID_SERVER)
- return;
-
- /* Parse payload */
- if (!silc_buffer_unformat(packet->buffer,
- SILC_STR_UI16_NSTRING_ALLOC(&tmpid1,
- &channel_id_len),
- SILC_STR_UI16_NSTRING_ALLOC(&tmpid2,
- &client_id_len),
- SILC_STR_END))
- return;
-
- if (!tmpid1 || !tmpid2)
+ packet->src_id_type != SILC_ID_SERVER ||
+ server->server_type == SILC_SERVER)
return;
- /* Decode the channel ID */
- channel_id = silc_id_str2id(tmpid1, SILC_ID_CHANNEL);
- if (!channel_id)
- goto out;
-
- /* Decode the client ID */
- client_id = silc_id_str2id(tmpid2, SILC_ID_CLIENT);
- if (!client_id)
- goto out;
-
-#if 0
- /* If the packet is originated from the one who sent it to us we know
- that the ID belongs to our cell, unless the sender was router. */
- tmpid = silc_id_str2id(packet->src_id, SILC_ID_SERVER);
- tmpserver = (SilcServerEntry)sock->user_data;
-
- if (!SILC_ID_SERVER_COMPARE(tmpid, tmpserver->id) &&
- sock->type == SILC_SOCKET_TYPE_SERVER) {
- id_list = server->local_list;
- router_sock = sock;
- router = sock->user_data;
- } else {
- id_list = server->global_list;
- router_sock = (SilcSocketConnection)server->router->connection;
- router = server->router;
- }
- silc_free(tmpid);
-#endif
-
- router_sock = sock;
- router = sock->user_data;
-
- /* Find the channel */
- channel = silc_idlist_find_channel_by_id(server->local_list,
- channel_id, NULL);
- if (!channel) {
- channel = silc_idlist_find_channel_by_id(server->global_list,
- channel_id, NULL);
- if (!channel)
- goto out;
- }
-
- /* If we are router and this packet is not already broadcast packet
- we will broadcast it. */
+ /* If the sender of this packet is server and we are router we need to
+ broadcast this packet to other routers in the network. Broadcast
+ this list packet instead of multiple New Channel packets. */
if (!server->standalone && server->server_type == SILC_ROUTER &&
+ sock->type == SILC_SOCKET_TYPE_SERVER &&
!(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
- SILC_LOG_DEBUG(("Broadcasting received New Channel User packet"));
- silc_server_packet_send(server, server->router->connection, packet->type,
- packet->flags | SILC_PACKET_FLAG_BROADCAST,
+ SILC_LOG_DEBUG(("Broadcasting received New Channel List packet"));
+ silc_server_packet_send(server, server->router->connection,
+ packet->type,
+ packet->flags | SILC_PACKET_FLAG_BROADCAST,
packet->buffer->data, packet->buffer->len, FALSE);
}
- SILC_LOG_DEBUG(("Client ID: %s", silc_id_render(client_id, SILC_ID_CLIENT)));
-
- /* Get client entry */
- client = silc_idlist_find_client_by_id(server->local_list, client_id, NULL);
- if (!client) {
- client = silc_idlist_find_client_by_id(server->global_list,
- client_id, NULL);
- if (!client)
- goto out;
+ /* Make copy of the original packet context, except for the actual
+ data buffer, which we will here now fetch from the original buffer. */
+ new = silc_packet_context_alloc();
+ new->type = SILC_PACKET_NEW_CHANNEL;
+ new->flags = packet->flags;
+ new->src_id = packet->src_id;
+ new->src_id_len = packet->src_id_len;
+ new->src_id_type = packet->src_id_type;
+ new->dst_id = packet->dst_id;
+ new->dst_id_len = packet->dst_id_len;
+ new->dst_id_type = packet->dst_id_type;
+
+ buffer = silc_buffer_alloc(512);
+ new->buffer = buffer;
+
+ while (packet->buffer->len) {
+ SILC_GET16_MSB(len1, packet->buffer->data);
+ if ((len1 > packet->buffer->len) ||
+ (len1 > buffer->truelen))
+ break;
+
+ SILC_GET16_MSB(len2, packet->buffer->data + 2 + len1);
+ if ((len2 > packet->buffer->len) ||
+ (len2 > buffer->truelen))
+ break;
+
+ silc_buffer_pull_tail(buffer, 8 + len1 + len2);
+ silc_buffer_put(buffer, packet->buffer->data, 8 + len1 + len2);
+
+ /* Process the New Channel */
+ silc_server_new_channel(server, sock, new);
+
+ silc_buffer_push_tail(buffer, 8 + len1 + len2);
+ silc_buffer_pull(packet->buffer, 8 + len1 + len2);
}
- /* Join the client to the channel by adding it to channel's user list.
- Add also the channel to client entry's channels list for fast cross-
- referencing. */
- chl = silc_calloc(1, sizeof(*chl));
- chl->client = client;
- chl->channel = channel;
- silc_list_add(channel->user_list, chl);
- silc_list_add(client->channels, chl);
-
- /* Send JOIN notify to local clients on the channel. As we are router
- it is assured that this is sent only to our local clients and locally
- connected servers if needed. */
- clidp = silc_id_payload_encode(client_id, SILC_ID_CLIENT);
- silc_server_send_notify_to_channel(server, channel, FALSE,
- SILC_NOTIFY_TYPE_JOIN,
- 1, clidp->data, clidp->len);
- silc_buffer_free(clidp);
-
- client_id = NULL;
-
- out:
- if (client_id)
- silc_free(client_id);
- if (channel_id)
- silc_free(channel_id);
- silc_free(tmpid1);
- silc_free(tmpid2);
+ silc_buffer_free(buffer);
+ silc_free(new);
}
-/* Processes incoming REMOVE_ID packet. The packet is used to notify routers
- that certain ID should be removed. After that the ID will become invalid. */
+/* Received key agreement packet. This packet is never for us. It is to
+ the client in the packet's destination ID. Sending of this sort of packet
+ equals sending private message, ie. it is sent point to point from
+ one client to another. */
-void silc_server_remove_id(SilcServer server,
- SilcSocketConnection sock,
- SilcPacketContext *packet)
+void silc_server_key_agreement(SilcServer server,
+ SilcSocketConnection sock,
+ SilcPacketContext *packet)
{
- SilcIDList id_list;
- SilcIDPayload idp;
- SilcIdType id_type;
- void *id, *id_entry;
+ SilcSocketConnection dst_sock;
+ SilcIDListData idata;
- if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
- server->server_type == SILC_SERVER ||
- packet->src_id_type != SILC_ID_SERVER)
- return;
+ SILC_LOG_DEBUG(("Start"));
- idp = silc_id_payload_parse(packet->buffer);
- if (!idp)
+ if (packet->src_id_type != SILC_ID_CLIENT ||
+ packet->dst_id_type != SILC_ID_CLIENT)
return;
- id_type = silc_id_payload_get_type(idp);
-
- id = silc_id_payload_get_id(idp);
- if (!id)
- goto out;
-
- /* If the sender of this packet is server and we are router we need to
- broadcast this packet to other routers in the network. */
- if (!server->standalone && server->server_type == SILC_ROUTER &&
- sock->type == SILC_SOCKET_TYPE_SERVER &&
- !(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
- SILC_LOG_DEBUG(("Broadcasting received Remove ID packet"));
- silc_server_packet_send(server, server->router->connection,
- packet->type,
- packet->flags | SILC_PACKET_FLAG_BROADCAST,
- packet->buffer->data, packet->buffer->len, FALSE);
- }
-
- if (sock->type == SILC_SOCKET_TYPE_SERVER)
- id_list = server->local_list;
- else
- id_list = server->global_list;
+ if (!packet->dst_id)
+ return;
- /* Remove the ID */
- switch(id_type) {
- case SILC_ID_CLIENT:
- id_entry = silc_idlist_find_client_by_id(id_list, (SilcClientID *)id,
- NULL);
- if (id_entry) {
- silc_idlist_del_client(id_list, (SilcClientEntry)id_entry);
+ /* Get the route to the client */
+ dst_sock = silc_server_get_client_route(server, packet->dst_id,
+ packet->dst_id_len, NULL, &idata);
+ if (!dst_sock)
+ return;
- SILC_LOG_DEBUG(("Removed client id(%s) from [%s] %s",
- silc_id_render(id, SILC_ID_CLIENT),
- sock->type == SILC_SOCKET_TYPE_SERVER ?
- "Server" : "Router", sock->hostname));
- }
- break;
+ /* Relay the packet */
+ silc_server_relay_packet(server, dst_sock, idata->send_key,
+ idata->hmac, packet, FALSE);
+}
- case SILC_ID_SERVER:
- id_entry = silc_idlist_find_server_by_id(id_list, (SilcServerID *)id,
- NULL);
- if (id_entry) {
- silc_idlist_del_server(id_list, (SilcServerEntry)id_entry);
+/* Received connection auth request packet that is used during connection
+ phase to resolve the mandatory authentication method. This packet can
+ actually be received at anytime but usually it is used only during
+ the connection authentication phase. Now, protocol says that this packet
+ can come from client or server, however, we support only this coming
+ from client and expect that server's always knows what authentication
+ method to use. */
+
+void silc_server_connection_auth_request(SilcServer server,
+ SilcSocketConnection sock,
+ SilcPacketContext *packet)
+{
+ SilcServerConfigSectionClientConnection *client = NULL;
+ unsigned short conn_type;
+ int ret;
+ SilcAuthMethod auth_meth;
- SILC_LOG_DEBUG(("Removed server id(%s) from [%s] %s",
- silc_id_render(id, SILC_ID_SERVER),
- sock->type == SILC_SOCKET_TYPE_SERVER ?
- "Server" : "Router", sock->hostname));
- }
- break;
+ SILC_LOG_DEBUG(("Start"));
- case SILC_ID_CHANNEL:
- id_entry = silc_idlist_find_channel_by_id(id_list, (SilcChannelID *)id,
- NULL);
- if (id_entry) {
- silc_idlist_del_channel(id_list, (SilcChannelEntry)id_entry);
+ if (packet->src_id_type && packet->src_id_type != SILC_ID_CLIENT)
+ return;
- SILC_LOG_DEBUG(("Removed channel id(%s) from [%s] %s",
- silc_id_render(id, SILC_ID_CHANNEL),
- sock->type == SILC_SOCKET_TYPE_SERVER ?
- "Server" : "Router", sock->hostname));
- }
- break;
+ /* Parse the payload */
+ ret = silc_buffer_unformat(packet->buffer,
+ SILC_STR_UI_SHORT(&conn_type),
+ SILC_STR_UI_SHORT(NULL),
+ SILC_STR_END);
+ if (ret == -1)
+ return;
- default:
- break;
- }
+ if (conn_type != SILC_SOCKET_TYPE_CLIENT)
+ return;
- out:
- silc_id_payload_free(idp);
+ /* Get the authentication method for the client */
+ auth_meth = SILC_AUTH_NONE;
+ client = silc_server_config_find_client_conn(server->config,
+ sock->ip,
+ sock->port);
+ if (!client)
+ client = silc_server_config_find_client_conn(server->config,
+ sock->hostname,
+ sock->port);
+ if (client)
+ auth_meth = client->auth_meth;
+
+ /* Send it back to the client */
+ silc_server_send_connection_auth_request(server, sock,
+ conn_type,
+ auth_meth);
}
projects / silc.git / blobdiff