| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #include "config.h" |
| |
| #include "rdpsnd_service.h" |
| #include "rdpsnd_messages.h" |
| |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include <freerdp/constants.h> |
| #include <freerdp/utils/svc_plugin.h> |
| #include <guacamole/client.h> |
| |
| #ifdef ENABLE_WINPR |
| #include <winpr/stream.h> |
| #else |
| #include "compat/winpr-stream.h" |
| #endif |
| |
| /** |
| * Entry point for RDPSND virtual channel. |
| */ |
| int VirtualChannelEntry(PCHANNEL_ENTRY_POINTS pEntryPoints) { |
| |
| /* Allocate plugin */ |
| guac_rdpsndPlugin* rdpsnd = |
| (guac_rdpsndPlugin*) calloc(1, sizeof(guac_rdpsndPlugin)); |
| |
| /* Init channel def */ |
| strcpy(rdpsnd->plugin.channel_def.name, "rdpsnd"); |
| rdpsnd->plugin.channel_def.options = |
| CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP; |
| |
| /* Set callbacks */ |
| rdpsnd->plugin.connect_callback = guac_rdpsnd_process_connect; |
| rdpsnd->plugin.receive_callback = guac_rdpsnd_process_receive; |
| rdpsnd->plugin.event_callback = guac_rdpsnd_process_event; |
| rdpsnd->plugin.terminate_callback = guac_rdpsnd_process_terminate; |
| |
| /* Finish init */ |
| svc_plugin_init((rdpSvcPlugin*) rdpsnd, pEntryPoints); |
| return 1; |
| |
| } |
| |
| /* |
| * Service Handlers |
| */ |
| |
| void guac_rdpsnd_process_connect(rdpSvcPlugin* plugin) { |
| |
| guac_rdpsndPlugin* rdpsnd = (guac_rdpsndPlugin*) plugin; |
| |
| /* Get client from plugin parameters */ |
| guac_client* client = rdpsnd->client = |
| (guac_client*) plugin->channel_entry_points.pExtendedData; |
| |
| /* NULL out pExtendedData so we don't lose our guac_client due to an |
| * automatic free() within libfreerdp */ |
| plugin->channel_entry_points.pExtendedData = NULL; |
| |
| #ifdef RDPSVCPLUGIN_INTERVAL_MS |
| /* Update every 10 ms */ |
| plugin->interval_ms = 10; |
| #endif |
| |
| /* Log that sound has been loaded */ |
| guac_client_log(client, GUAC_LOG_INFO, "guacsnd connected."); |
| |
| } |
| |
| void guac_rdpsnd_process_terminate(rdpSvcPlugin* plugin) { |
| free(plugin); |
| } |
| |
| void guac_rdpsnd_process_event(rdpSvcPlugin* plugin, wMessage* event) { |
| freerdp_event_free(event); |
| } |
| |
| void guac_rdpsnd_process_receive(rdpSvcPlugin* plugin, |
| wStream* input_stream) { |
| |
| guac_rdpsndPlugin* rdpsnd = (guac_rdpsndPlugin*) plugin; |
| guac_rdpsnd_pdu_header header; |
| |
| /* Read RDPSND PDU header */ |
| Stream_Read_UINT8(input_stream, header.message_type); |
| Stream_Seek_UINT8(input_stream); |
| Stream_Read_UINT16(input_stream, header.body_size); |
| |
| /* |
| * If next PDU is SNDWAVE (due to receiving WaveInfo PDU previously), |
| * ignore the header and parse as a Wave PDU. |
| */ |
| if (rdpsnd->next_pdu_is_wave) |
| guac_rdpsnd_wave_handler(rdpsnd, input_stream, &header); |
| |
| /* Dispatch message to standard handlers */ |
| else { |
| switch (header.message_type) { |
| |
| /* Server Audio Formats and Version PDU */ |
| case SNDC_FORMATS: |
| guac_rdpsnd_formats_handler(rdpsnd, input_stream, &header); |
| break; |
| |
| /* Training PDU */ |
| case SNDC_TRAINING: |
| guac_rdpsnd_training_handler(rdpsnd, input_stream, &header); |
| break; |
| |
| /* WaveInfo PDU */ |
| case SNDC_WAVE: |
| guac_rdpsnd_wave_info_handler(rdpsnd, input_stream, &header); |
| break; |
| |
| /* Close PDU */ |
| case SNDC_CLOSE: |
| guac_rdpsnd_close_handler(rdpsnd, input_stream, &header); |
| break; |
| |
| } |
| } |
| |
| Stream_Free(input_stream, TRUE); |
| } |
| |