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