+
+/* Processes received SET_MODE packet. The packet is used to distribute
+ the information about changed channel's or client's channel modes. */
+
+void silc_server_set_mode(SilcServer server,
+ SilcSocketConnection sock,
+ SilcPacketContext *packet)
+{
+ SilcSetModePayload payload = NULL;
+ SilcArgumentPayload args = NULL;
+ unsigned short mode_type;
+ unsigned int mode_mask;
+ unsigned char *tmp, *tmp2;
+ unsigned int tmp_len, tmp_len2;
+ unsigned char mode[4];
+ SilcClientID *client_id;
+ SilcChannelID *channel_id = NULL;
+ SilcClientEntry client;
+ SilcChannelEntry channel;
+ SilcChannelClientEntry chl;
+
+ if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
+ packet->src_id_type == SILC_ID_CLIENT)
+ return;
+
+ SILC_LOG_DEBUG(("Start"));
+
+ /* 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 Set Mode packet"));
+ silc_server_packet_send(server, server->router->connection, packet->type,
+ packet->flags | SILC_PACKET_FLAG_BROADCAST,
+ packet->buffer->data, packet->buffer->len, FALSE);
+ }
+
+ /* Parse Set Mode payload */
+ payload = silc_set_mode_payload_parse(packet->buffer);
+ if (!payload)
+ return;
+
+ mode_type = silc_set_mode_get_type(payload);
+ args = silc_set_mode_get_args(payload);
+ if (!args)
+ goto out;
+
+ mode_mask = silc_set_mode_get_mode(payload);
+ SILC_PUT32_MSB(mode_mask, mode);
+
+ switch (mode_type) {
+ case SILC_MODE_TYPE_CHANNEL:
+ /* 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->local_list,
+ channel_id, NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ channel_id, NULL);
+ if (!channel)
+ goto out;
+ }
+
+ /* Get Client ID payload */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (!tmp)
+ goto out;
+
+ /* Send CMODE_CHANGE notify to local channel */
+ silc_server_send_notify_to_channel(server, sock, channel, FALSE,
+ SILC_NOTIFY_TYPE_CMODE_CHANGE,
+ 2, tmp, tmp_len,
+ mode, sizeof(mode));
+
+ /* Change the mode */
+ channel->mode = mode_mask;
+ break;
+
+ case SILC_MODE_TYPE_UCHANNEL:
+ /* 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->local_list,
+ channel_id, NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ channel_id, NULL);
+ if (!channel)
+ goto out;
+ }
+
+ /* Get Client ID payload */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (!tmp)
+ goto out;
+
+ /* Get target Client ID */
+ tmp2 = silc_argument_get_arg_type(args, 3, &tmp_len2);
+ if (!tmp2)
+ goto out;
+ client_id = silc_id_payload_parse_id(tmp2, tmp_len2);
+ if (!client_id)
+ goto out;
+
+ /* Get target 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);
+
+ /* Send CUMODE_CHANGE notify to local channel */
+ silc_server_send_notify_to_channel(server, sock, channel, FALSE,
+ SILC_NOTIFY_TYPE_CUMODE_CHANGE, 2,
+ tmp, tmp_len,
+ mode, sizeof(mode),
+ tmp2, tmp_len2);
+
+ /* 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_mask;
+ break;
+ }
+
+ break;
+
+ default:
+ break;
+ }
+
+ out:
+ if (channel_id)
+ silc_free(channel_id);
+ if (args)
+ silc_argument_payload_free(args);
+ if (payload)
+ silc_set_mode_payload_free(payload);
+}