GUACAMOLE-25: Implement message processing. Stub handlers.
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1088332376
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503ffb0d45
@ -47,6 +47,7 @@ libguac_client_rdp_la_SOURCES = \
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user.c
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guacai_sources = \
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guac_ai/ai_messages.c \
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guac_ai/ai_service.c \
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ptr_string.c
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@ -74,6 +75,7 @@ guacdr_sources = \
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noinst_HEADERS = \
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compat/client-cliprdr.h \
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compat/rail.h \
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guac_ai/ai_messages.h \
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guac_ai/ai_service.h \
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guac_rdpdr/rdpdr_fs_messages.h \
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guac_rdpdr/rdpdr_fs_messages_dir_info.h \
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84
src/protocols/rdp/guac_ai/ai_messages.c
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84
src/protocols/rdp/guac_ai/ai_messages.c
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@ -0,0 +1,84 @@
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/*
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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 "ai_messages.h"
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#include "rdp.h"
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#include <stdlib.h>
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#include <freerdp/freerdp.h>
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#include <freerdp/constants.h>
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#include <freerdp/dvc.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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void guac_rdp_ai_process_version(guac_client* client,
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IWTSVirtualChannel* channel, wStream* stream) {
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UINT32 version;
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Stream_Read_UINT32(stream, version);
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/* Warn if server's version number is incorrect */
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if (version != 1)
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guac_client_log(client, GUAC_LOG_WARNING,
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"Server reports AUDIO_INPUT version %i, not 1", version);
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/* Build response version PDU */
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wStream* response = Stream_New(NULL, 5);
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Stream_Write_UINT8(response, GUAC_RDP_MSG_SNDIN_VERSION); /* MessageId */
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Stream_Write_UINT32(response, 1); /* Version */
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/* Send response */
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channel->Write(channel, (UINT32) Stream_GetPosition(response),
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Stream_Buffer(response), NULL);
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Stream_Free(response, TRUE);
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}
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void guac_rdp_ai_process_formats(guac_client* client,
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IWTSVirtualChannel* channel, wStream* stream) {
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/* STUB */
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guac_client_log(client, GUAC_LOG_DEBUG, "AUDIO_INPUT: formats");
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}
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void guac_rdp_ai_process_open(guac_client* client,
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IWTSVirtualChannel* channel, wStream* stream) {
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/* STUB */
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guac_client_log(client, GUAC_LOG_DEBUG, "AUDIO_INPUT: open");
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}
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void guac_rdp_ai_process_formatchange(guac_client* client,
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IWTSVirtualChannel* channel, wStream* stream) {
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/* STUB */
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guac_client_log(client, GUAC_LOG_DEBUG, "AUDIO_INPUT: formatchange");
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}
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157
src/protocols/rdp/guac_ai/ai_messages.h
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157
src/protocols/rdp/guac_ai/ai_messages.h
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@ -0,0 +1,157 @@
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/*
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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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#ifndef GUAC_RDP_AI_MESSAGES_H
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#define GUAC_RDP_AI_MESSAGES_H
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#include "config.h"
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#include <freerdp/dvc.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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* The message ID associated with the AUDIO_INPUT Version PDU. The Version PDU
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* is sent by both the client and the server to indicate their version of the
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* AUDIO_INPUT channel protocol (which must always be 1).
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*/
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#define GUAC_RDP_MSG_SNDIN_VERSION 0x01
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/**
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* The message ID associated with the AUDIO_INPUT Sound Formats PDU. The
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* Sound Formats PDU is sent by the client and the server to indicate the
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* formats of audio supported.
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*/
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#define GUAC_RDP_MSG_SNDIN_FORMATS 0x02
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/**
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* The message ID associated with the AUDIO_INPUT Open PDU. The Open PDU is
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* sent by the server to inform the client that the AUDIO_INPUT channel is
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* now open.
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*/
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#define GUAC_RDP_MSG_SNDIN_OPEN 0x03
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/**
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* The message ID associated with the AUDIO_INPUT Open Reply PDU. The Open
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* Reply PDU is sent by the client (after sending a Format Change PDU) to
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* acknowledge that the AUDIO_INPUT channel is open.
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*/
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#define GUAC_RDP_MSG_SNDIN_OPEN_REPLY 0x04
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/**
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* The message ID associated with the AUDIO_INPUT Incoming Data PDU. The
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* Incoming Data PDU is sent by the client to inform the server of incoming
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* sound format or audio data.
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*/
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#define GUAC_RDP_MSG_SNDIN_DATA_INCOMING 0x05
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/**
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* The message ID associated with the AUDIO_INPUT Data PDU. The Data PDU is
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* sent by the client and contains audio data read from the microphone.
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*/
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#define GUAC_RDP_MSG_SNDIN_DATA 0x06
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/**
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* The message ID associated with the AUDIO_INPUT Format Change PDU. The Format
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* Change PDU is sent by the client to acknowledge the current sound format, or
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* by the server to request a different sound format.
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*/
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#define GUAC_RDP_MSG_SNDIN_FORMATCHANGE 0x07
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/**
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* Processes a Version PDU received from the RDP server. The Version PDU is
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* sent by the server to indicate its version of the AUDIO_INPUT channel
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* protocol (which must always be 1).
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*
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* @param client
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* The guac_client associated with the current RDP connection.
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*
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* @param channel
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* The IWTSVirtualChannel instance associated with the connected
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* AUDIO_INPUT channel.
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*
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* @param stream
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* The received PDU, with the read position just after the message ID field
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* common to all AUDIO_INPUT PDUs.
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*/
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void guac_rdp_ai_process_version(guac_client* client,
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IWTSVirtualChannel* channel, wStream* stream);
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/**
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* Processes a Sound Formats PDU received from the RDP server. The Sound
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* Formats PDU is sent by the server to indicate the formats of audio
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* supported.
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*
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* @param client
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* The guac_client associated with the current RDP connection.
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*
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* @param channel
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* The IWTSVirtualChannel instance associated with the connected
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* AUDIO_INPUT channel.
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*
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* @param stream
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* The received PDU, with the read position just after the message ID field
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* common to all AUDIO_INPUT PDUs.
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*/
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void guac_rdp_ai_process_formats(guac_client* client,
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IWTSVirtualChannel* channel, wStream* stream);
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/**
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* Processes a Open PDU received from the RDP server. The Open PDU is sent by
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* the server to inform the client that the AUDIO_INPUT channel is now open.
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*
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* @param client
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* The guac_client associated with the current RDP connection.
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*
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* @param channel
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* The IWTSVirtualChannel instance associated with the connected
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* AUDIO_INPUT channel.
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*
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* @param stream
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* The received PDU, with the read position just after the message ID field
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* common to all AUDIO_INPUT PDUs.
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*/
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void guac_rdp_ai_process_open(guac_client* client,
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IWTSVirtualChannel* channel, wStream* stream);
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/**
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* Processes a Format Change PDU received from the RDP server. The Format
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* Change PDU is sent by the server to request a different sound format.
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*
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* @param client
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* The guac_client associated with the current RDP connection.
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*
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* @param channel
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* The IWTSVirtualChannel instance associated with the connected
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* AUDIO_INPUT channel.
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*
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* @param stream
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* The received PDU, with the read position just after the message ID field
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* common to all AUDIO_INPUT PDUs.
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*/
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void guac_rdp_ai_process_formatchange(guac_client* client,
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IWTSVirtualChannel* channel, wStream* stream);
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#endif
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@ -19,6 +19,7 @@
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#include "config.h"
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#include "ai_messages.h"
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#include "ai_service.h"
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#include "ptr_string.h"
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#include "rdp.h"
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@ -47,18 +48,49 @@
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* The guac_client associated with RDP connection having the AUDIO_INPUT
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* connection along which the given data was received.
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*
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* @param channel
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* A reference to the IWTSVirtualChannel instance along which responses
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* should be sent.
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*
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* @param stream
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* The data received along the AUDIO_INPUT channel.
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*/
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static void guac_rdp_ai_handle_data(guac_client* client, wStream* stream) {
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static void guac_rdp_ai_handle_data(guac_client* client,
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IWTSVirtualChannel* channel, wStream* stream) {
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/* Read message ID from received PDU */
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BYTE message_id;
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Stream_Read_UINT8(stream, message_id);
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/* STUB */
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guac_client_log(client, GUAC_LOG_DEBUG, "AUDIO_INPUT data received: 0x%x",
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message_id);
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/* Invoke appropriate message processor based on ID */
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switch (message_id) {
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/* Version PDU */
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case GUAC_RDP_MSG_SNDIN_VERSION:
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guac_rdp_ai_process_version(client, channel, stream);
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break;
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/* Sound Formats PDU */
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case GUAC_RDP_MSG_SNDIN_FORMATS:
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guac_rdp_ai_process_formats(client, channel, stream);
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break;
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/* Open PDU */
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case GUAC_RDP_MSG_SNDIN_OPEN:
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guac_rdp_ai_process_open(client, channel, stream);
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break;
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/* Format Change PDU */
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case GUAC_RDP_MSG_SNDIN_FORMATCHANGE:
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guac_rdp_ai_process_formatchange(client, channel, stream);
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break;
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/* Log unknown message IDs */
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default:
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guac_client_log(client, GUAC_LOG_DEBUG,
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"Unknown AUDIO_INPUT message ID: 0x%x", message_id);
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}
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}
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@ -85,10 +117,11 @@ static int guac_rdp_ai_data(IWTSVirtualChannelCallback* channel_callback,
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guac_rdp_ai_channel_callback* ai_channel_callback =
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(guac_rdp_ai_channel_callback*) channel_callback;
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IWTSVirtualChannel* channel = ai_channel_callback->channel;
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/* Invoke generalized (API-independent) data handler */
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wStream* stream = Stream_New(buffer, size);
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guac_rdp_ai_handle_data(ai_channel_callback->client, stream);
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guac_rdp_ai_handle_data(ai_channel_callback->client, channel, stream);
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Stream_Free(stream, FALSE);
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return 0;
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@ -114,9 +147,10 @@ static int guac_rdp_ai_data(IWTSVirtualChannelCallback* channel_callback,
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guac_rdp_ai_channel_callback* ai_channel_callback =
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(guac_rdp_ai_channel_callback*) channel_callback;
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IWTSVirtualChannel* channel = ai_channel_callback->channel;
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/* Invoke generalized (API-independent) data handler */
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guac_rdp_ai_handle_data(ai_channel_callback->client, stream);
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guac_rdp_ai_handle_data(ai_channel_callback->client, channel, stream);
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return 0;
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@ -197,6 +231,7 @@ static int guac_rdp_ai_new_connection(
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/* Init listener callback with data from plugin */
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ai_channel_callback->client = ai_listener_callback->client;
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ai_channel_callback->channel = channel;
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ai_channel_callback->parent.OnDataReceived = guac_rdp_ai_data;
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ai_channel_callback->parent.OnClose = guac_rdp_ai_close;
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@ -63,6 +63,12 @@ typedef struct guac_rdp_ai_channel_callback {
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*/
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IWTSVirtualChannelCallback parent;
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/**
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* The actual virtual channel instance along which the AUDIO_INPUT plugin
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* should send any responses.
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*/
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IWTSVirtualChannel* channel;
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/**
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* The guac_client instance associated with the RDP connection using the
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* AUDIO_INPUT plugin.
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