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FreeRDP/channels/rdpgfx/server/rdpgfx_main.c
Armin Novak b2c29158be Scanbuild warning, argument checks and leak fixes. 
* Added Stream_GetRemainingCapacity to check remaining stream size
  before writes.
* Fixed shadow server memory leak.
* Fixed lots of scanbuild warnings
* Added missing argument checks in many functions
* Added missing static function declarations
2017-03-02 18:13:43 +01:00

1665 lines
43 KiB
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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Graphics Pipeline Extension
*
* Copyright 2016 Jiang Zihao <zihao.jiang@yahoo.com>
*
* Licensed 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winpr/crt.h>
#include <winpr/synch.h>
#include <winpr/thread.h>
#include <winpr/stream.h>
#include <freerdp/channels/wtsvc.h>
#include <freerdp/channels/log.h>
#include "rdpgfx_common.h"
#include "rdpgfx_main.h"
#define TAG CHANNELS_TAG("rdpgfx.server")
#define RDPGFX_RESET_GRAPHICS_PDU_SIZE 340
/**
* Function description
* Calculate packet size from data length.
* It would be data length + header.
*
* @param dataLen estimated data length without header
*
* @return new stream
*/
static INLINE UINT32 rdpgfx_pdu_length(UINT32 dataLen)
{
return RDPGFX_HEADER_SIZE + dataLen;
}
static INLINE UINT rdpgfx_server_packet_init_header(wStream* s,
UINT16 cmdId, UINT32 pduLength)
{
RDPGFX_HEADER header;
header.flags = 0;
header.cmdId = cmdId;
header.pduLength = pduLength;
/* Write header. Note that actual length might be changed
* after the entire packet has been constructed. */
return rdpgfx_write_header(s, &header);
}
/**
* Function description
* Complete the rdpgfx packet header.
*
* @param s stream
* @param start saved start pos of the packet in the stream
*/
static INLINE void rdpgfx_server_packet_complete_header(wStream* s,
size_t start)
{
size_t current = Stream_GetPosition(s);
/* Fill actual length */
Stream_SetPosition(s, start + RDPGFX_HEADER_SIZE - sizeof(UINT32));
Stream_Write_UINT32(s, current - start); /* pduLength (4 bytes) */
Stream_SetPosition(s, current);
}
/**
* Function description
* Send the stream for rdpgfx server packet.
* The packet would be compressed according to [MS-RDPEGFX].
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_server_packet_send(RdpgfxServerContext* context, wStream* s)
{
UINT error;
UINT32 flags = 0;
ULONG written;
BYTE* pSrcData = Stream_Buffer(s);
UINT32 SrcSize = Stream_GetPosition(s);
wStream* fs;
/* Allocate new stream with enough capacity. Additional overhead is
* descriptor (1 bytes) + segmentCount (2 bytes) + uncompressedSize (4 bytes)
* + segmentCount * size (4 bytes) */
fs = Stream_New(NULL, SrcSize + 7
+ (SrcSize / ZGFX_SEGMENTED_MAXSIZE + 1) * 4);
if (!fs)
{
WLog_ERR(TAG, "Stream_New failed!");
error = CHANNEL_RC_NO_MEMORY;
goto out;
}
if (zgfx_compress_to_stream(context->priv->zgfx, fs, pSrcData,
SrcSize, &flags) < 0)
{
WLog_ERR(TAG, "zgfx_compress_to_stream failed!");
error = ERROR_INTERNAL_ERROR;
goto out;
}
if (!WTSVirtualChannelWrite(context->priv->rdpgfx_channel,
(PCHAR) Stream_Buffer(fs),
Stream_GetPosition(fs), &written))
{
WLog_ERR(TAG, "WTSVirtualChannelWrite failed!");
error = ERROR_INTERNAL_ERROR;
goto out;
}
if (written < Stream_GetPosition(fs))
{
WLog_WARN(TAG, "Unexpected bytes written: %"PRIu32"/%"PRIuz"",
written, Stream_GetPosition(fs));
}
error = CHANNEL_RC_OK;
out:
Stream_Free(fs, TRUE);
Stream_Free(s, TRUE);
return error;
}
/**
* Function description
* Create new stream for single rdpgfx packet. The new stream length
* would be required data length + header. The header will be written
* to the stream before return, but the pduLength field might be
* changed in rdpgfx_server_single_packet_send.
*
* @param cmdId
* @param dataLen estimated data length without header
*
* @return new stream
*/
static wStream* rdpgfx_server_single_packet_new(UINT16 cmdId, UINT32 dataLen)
{
UINT error;
wStream* s;
UINT32 pduLength = rdpgfx_pdu_length(dataLen);
s = Stream_New(NULL, pduLength);
if (!s)
{
WLog_ERR(TAG, "Stream_New failed!");
goto error;
}
if ((error = rdpgfx_server_packet_init_header(s, cmdId, pduLength)))
{
WLog_ERR(TAG, "Failed to init header with error %"PRIu32"!", error);
goto error;
}
return s;
error:
Stream_Free(s, TRUE);
return NULL;
}
/**
* Function description
* Send the stream for single rdpgfx packet.
* The header will be filled with actual length.
* The packet would be compressed according to [MS-RDPEGFX].
*
* @return 0 on success, otherwise a Win32 error code
*/
static INLINE UINT rdpgfx_server_single_packet_send(
RdpgfxServerContext* context, wStream* s)
{
/* Fill actual length */
rdpgfx_server_packet_complete_header(s, 0);
return rdpgfx_server_packet_send(context, s);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_caps_confirm_pdu(RdpgfxServerContext* context,
RDPGFX_CAPS_CONFIRM_PDU* capsConfirm)
{
RDPGFX_CAPSET* capsSet = capsConfirm->capsSet;
wStream* s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_CAPSCONFIRM, RDPGFX_CAPSET_SIZE);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT32(s, capsSet->version); /* version (4 bytes) */
Stream_Write_UINT32(s, 4); /* capsDataLength (4 bytes) */
Stream_Write_UINT32(s, capsSet->flags); /* capsData (4 bytes) */
return rdpgfx_server_single_packet_send(context, s);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_reset_graphics_pdu(RdpgfxServerContext* context,
RDPGFX_RESET_GRAPHICS_PDU* pdu)
{
UINT32 index;
MONITOR_DEF* monitor;
wStream* s;
/* Check monitorCount. This ensures total size within 340 bytes) */
if (pdu->monitorCount >= 16)
{
WLog_ERR(TAG, "Monitor count MUST be less than or equal to 16: %"PRIu32"",
pdu->monitorCount);
return ERROR_INVALID_DATA;
}
s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_RESETGRAPHICS,
RDPGFX_RESET_GRAPHICS_PDU_SIZE - RDPGFX_HEADER_SIZE);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT32(s, pdu->width); /* width (4 bytes) */
Stream_Write_UINT32(s, pdu->height); /* height (4 bytes) */
Stream_Write_UINT32(s, pdu->monitorCount); /* monitorCount (4 bytes) */
for (index = 0; index < pdu->monitorCount; index++)
{
monitor = &(pdu->monitorDefArray[index]);
Stream_Write_UINT32(s, monitor->left); /* left (4 bytes) */
Stream_Write_UINT32(s, monitor->top); /* top (4 bytes) */
Stream_Write_UINT32(s, monitor->right); /* right (4 bytes) */
Stream_Write_UINT32(s, monitor->bottom); /* bottom (4 bytes) */
Stream_Write_UINT32(s, monitor->flags); /* flags (4 bytes) */
}
/* pad (total size must be 340 bytes) */
Stream_SetPosition(s, RDPGFX_RESET_GRAPHICS_PDU_SIZE);
return rdpgfx_server_single_packet_send(context, s);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_evict_cache_entry_pdu(RdpgfxServerContext* context,
RDPGFX_EVICT_CACHE_ENTRY_PDU* pdu)
{
wStream* s = rdpgfx_server_single_packet_new(RDPGFX_CMDID_EVICTCACHEENTRY, 2);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT16(s, pdu->cacheSlot); /* cacheSlot (2 bytes) */
return rdpgfx_server_single_packet_send(context, s);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_cache_import_reply_pdu(RdpgfxServerContext* context,
RDPGFX_CACHE_IMPORT_REPLY_PDU* pdu)
{
UINT16 index;
wStream* s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_CACHEIMPORTREPLY,
2 + 2 * pdu->importedEntriesCount);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
/* importedEntriesCount (2 bytes) */
Stream_Write_UINT16(s, pdu->importedEntriesCount);
for (index = 0; index < pdu->importedEntriesCount; index++)
{
Stream_Write_UINT16(s, pdu->cacheSlots[index]); /* cacheSlot (2 bytes) */
}
return rdpgfx_server_single_packet_send(context, s);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_create_surface_pdu(RdpgfxServerContext* context,
RDPGFX_CREATE_SURFACE_PDU* pdu)
{
wStream* s = rdpgfx_server_single_packet_new(RDPGFX_CMDID_CREATESURFACE, 7);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT16(s, pdu->surfaceId); /* surfaceId (2 bytes) */
Stream_Write_UINT16(s, pdu->width); /* width (2 bytes) */
Stream_Write_UINT16(s, pdu->height); /* height (2 bytes) */
Stream_Write_UINT8(s, pdu->pixelFormat); /* RDPGFX_PIXELFORMAT (1 byte) */
return rdpgfx_server_single_packet_send(context, s);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_delete_surface_pdu(RdpgfxServerContext* context,
RDPGFX_DELETE_SURFACE_PDU* pdu)
{
wStream* s = rdpgfx_server_single_packet_new(RDPGFX_CMDID_DELETESURFACE, 2);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT16(s, pdu->surfaceId); /* surfaceId (2 bytes) */
return rdpgfx_server_single_packet_send(context, s);
}
static INLINE void rdpgfx_write_start_frame_pdu(wStream* s,
RDPGFX_START_FRAME_PDU* pdu)
{
Stream_Write_UINT32(s, pdu->timestamp); /* timestamp (4 bytes) */
Stream_Write_UINT32(s, pdu->frameId); /* frameId (4 bytes) */
}
static INLINE void rdpgfx_write_end_frame_pdu(wStream* s,
RDPGFX_END_FRAME_PDU* pdu)
{
Stream_Write_UINT32(s, pdu->frameId); /* frameId (4 bytes) */
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_start_frame_pdu(RdpgfxServerContext* context,
RDPGFX_START_FRAME_PDU* pdu)
{
wStream* s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_STARTFRAME,
RDPGFX_START_FRAME_PDU_SIZE);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
rdpgfx_write_start_frame_pdu(s, pdu);
return rdpgfx_server_single_packet_send(context, s);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_end_frame_pdu(RdpgfxServerContext* context,
RDPGFX_END_FRAME_PDU* pdu)
{
wStream* s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_ENDFRAME,
RDPGFX_END_FRAME_PDU_SIZE);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
rdpgfx_write_end_frame_pdu(s, pdu);
return rdpgfx_server_single_packet_send(context, s);
}
/**
* Function description
* Estimate RFX_AVC420_BITMAP_STREAM structure size in stream
*
* @return estimated size
*/
static INLINE UINT32 rdpgfx_estimate_h264_avc420(
RDPGFX_AVC420_BITMAP_STREAM* havc420)
{
/* H264 metadata + H264 stream. See rdpgfx_write_h264_avc420 */
return sizeof(UINT32) /* numRegionRects */
+ 10 /* regionRects + quantQualityVals */
* havc420->meta.numRegionRects
+ havc420->length;
}
/**
* Function description
* Estimate surface command packet size in stream without header
*
* @return estimated size
*/
static INLINE UINT32 rdpgfx_estimate_surface_command(RDPGFX_SURFACE_COMMAND*
cmd)
{
RDPGFX_AVC420_BITMAP_STREAM* havc420 = NULL;
RDPGFX_AVC444_BITMAP_STREAM* havc444 = NULL;
UINT32 h264Size = 0;
/* Estimate stream size according to codec. */
switch (cmd->codecId)
{
case RDPGFX_CODECID_CAPROGRESSIVE:
case RDPGFX_CODECID_CAPROGRESSIVE_V2:
return RDPGFX_WIRE_TO_SURFACE_PDU_2_SIZE + cmd->length;
case RDPGFX_CODECID_AVC420:
havc420 = (RDPGFX_AVC420_BITMAP_STREAM*)cmd->extra;
h264Size = rdpgfx_estimate_h264_avc420(havc420);
return RDPGFX_WIRE_TO_SURFACE_PDU_1_SIZE + h264Size;
case RDPGFX_CODECID_AVC444:
havc444 = (RDPGFX_AVC444_BITMAP_STREAM*)cmd->extra;
h264Size = sizeof(UINT32); /* cbAvc420EncodedBitstream1 */
/* avc420EncodedBitstream1 */
havc420 = &(havc444->bitstream[0]);
h264Size += rdpgfx_estimate_h264_avc420(havc420);
/* avc420EncodedBitstream2 */
if (havc444->LC == 0)
{
havc420 = &(havc444->bitstream[1]);
h264Size += rdpgfx_estimate_h264_avc420(havc420);
}
return RDPGFX_WIRE_TO_SURFACE_PDU_1_SIZE + h264Size;
default:
return RDPGFX_WIRE_TO_SURFACE_PDU_1_SIZE + cmd->length;
}
}
/**
* Function description
* Resolve RDPGFX_CMDID_WIRETOSURFACE_1 or RDPGFX_CMDID_WIRETOSURFACE_2
* according to codecId
*
* @return 0 on success, otherwise a Win32 error code
*/
static INLINE UINT16 rdpgfx_surface_command_cmdid(RDPGFX_SURFACE_COMMAND* cmd)
{
if (cmd->codecId == RDPGFX_CODECID_CAPROGRESSIVE ||
cmd->codecId == RDPGFX_CODECID_CAPROGRESSIVE_V2)
{
return RDPGFX_CMDID_WIRETOSURFACE_2;
}
return RDPGFX_CMDID_WIRETOSURFACE_1;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_write_h264_metablock(wStream* s, RDPGFX_H264_METABLOCK* meta)
{
UINT32 index;
RECTANGLE_16* regionRect;
RDPGFX_H264_QUANT_QUALITY* quantQualityVal;
UINT error = CHANNEL_RC_OK;
Stream_Write_UINT32(s, meta->numRegionRects); /* numRegionRects (4 bytes) */
for (index = 0; index < meta->numRegionRects; index++)
{
regionRect = &(meta->regionRects[index]);
if ((error = rdpgfx_write_rect16(s, regionRect)))
{
WLog_ERR(TAG, "rdpgfx_write_rect16 failed with error %"PRIu32"!", error);
return error;
}
}
for (index = 0; index < meta->numRegionRects; index++)
{
quantQualityVal = &(meta->quantQualityVals[index]);
Stream_Write_UINT8(s, quantQualityVal->qp
| (quantQualityVal->r << 6)
| (quantQualityVal->p << 7)); /* qpVal (1 byte) */
/* qualityVal (1 byte) */
Stream_Write_UINT8(s, quantQualityVal->qualityVal);
}
return error;
}
/**
* Function description
* Write RFX_AVC420_BITMAP_STREAM structure to stream
*
* @return 0 on success, otherwise a Win32 error code
*/
static INLINE UINT rdpgfx_write_h264_avc420(wStream* s,
RDPGFX_AVC420_BITMAP_STREAM* havc420)
{
UINT error = CHANNEL_RC_OK;
if ((error = rdpgfx_write_h264_metablock(s, &(havc420->meta))))
{
WLog_ERR(TAG, "rdpgfx_write_h264_metablock failed with error %"PRIu32"!",
error);
return error;
}
Stream_Write(s, havc420->data, havc420->length);
return error;
}
/**
* Function description
* Write RDPGFX_CMDID_WIRETOSURFACE_1 or RDPGFX_CMDID_WIRETOSURFACE_2
* to the stream according to RDPGFX_SURFACE_COMMAND message
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_write_surface_command(wStream* s,
RDPGFX_SURFACE_COMMAND* cmd)
{
UINT error = CHANNEL_RC_OK;
RDPGFX_AVC420_BITMAP_STREAM* havc420 = NULL;
RDPGFX_AVC444_BITMAP_STREAM* havc444 = NULL;
UINT32 bitmapDataStart = 0;
UINT32 bitmapDataLength = 0;
UINT8 pixelFormat = 0;
switch (cmd->format)
{
case PIXEL_FORMAT_BGRX32:
pixelFormat = GFX_PIXEL_FORMAT_XRGB_8888;
break;
case PIXEL_FORMAT_BGRA32:
pixelFormat = GFX_PIXEL_FORMAT_ARGB_8888;
break;
default:
WLog_ERR(TAG, "Format %s not supported!", GetColorFormatName(cmd->format));
return ERROR_INVALID_DATA;
}
if (cmd->codecId == RDPGFX_CODECID_CAPROGRESSIVE ||
cmd->codecId == RDPGFX_CODECID_CAPROGRESSIVE_V2)
{
/* Write RDPGFX_CMDID_WIRETOSURFACE_2 format for CAPROGRESSIVE */
Stream_Write_UINT16(s, cmd->surfaceId); /* surfaceId (2 bytes) */
Stream_Write_UINT16(s, cmd->codecId); /* codecId (2 bytes) */
Stream_Write_UINT32(s, cmd->contextId); /* codecContextId (4 bytes) */
Stream_Write_UINT8(s, pixelFormat); /* pixelFormat (1 byte) */
Stream_Write_UINT32(s, cmd->length); /* bitmapDataLength (4 bytes) */
Stream_Write(s, cmd->data, cmd->length);
}
else
{
/* Write RDPGFX_CMDID_WIRETOSURFACE_1 format for others */
Stream_Write_UINT16(s, cmd->surfaceId); /* surfaceId (2 bytes) */
Stream_Write_UINT16(s, cmd->codecId); /* codecId (2 bytes) */
Stream_Write_UINT8(s, pixelFormat); /* pixelFormat (1 byte) */
Stream_Write_UINT16(s, cmd->left); /* left (2 bytes) */
Stream_Write_UINT16(s, cmd->top); /* top (2 bytes) */
Stream_Write_UINT16(s, cmd->right); /* right (2 bytes) */
Stream_Write_UINT16(s, cmd->bottom); /* bottom (2 bytes) */
Stream_Write_UINT32(s, cmd->length); /* bitmapDataLength (4 bytes) */
bitmapDataStart = Stream_GetPosition(s);
if (cmd->codecId == RDPGFX_CODECID_AVC420)
{
havc420 = (RDPGFX_AVC420_BITMAP_STREAM*)cmd->extra;
error = rdpgfx_write_h264_avc420(s, havc420);
if (error != CHANNEL_RC_OK)
{
WLog_ERR(TAG, "rdpgfx_write_h264_avc420 failed!");
return error;
}
}
else if (cmd->codecId == RDPGFX_CODECID_AVC444)
{
havc444 = (RDPGFX_AVC444_BITMAP_STREAM*)cmd->extra;
havc420 = &(havc444->bitstream[0]);
/* avc420EncodedBitstreamInfo (4 bytes) */
Stream_Write_UINT32(s, havc420->length | (havc444->LC << 30UL));
/* avc420EncodedBitstream1 */
error = rdpgfx_write_h264_avc420(s, havc420);
if (error != CHANNEL_RC_OK)
{
WLog_ERR(TAG, "rdpgfx_write_h264_avc420 failed!");
return error;
}
/* avc420EncodedBitstream2 */
if (havc444->LC == 0)
{
havc420 = &(havc444->bitstream[0]);
error = rdpgfx_write_h264_avc420(s, havc420);
if (error != CHANNEL_RC_OK)
{
WLog_ERR(TAG, "rdpgfx_write_h264_avc420 failed!");
return error;
}
}
}
else
{
Stream_Write(s, cmd->data, cmd->length);
}
assert(Stream_GetPosition(s) <= Stream_Capacity(s));
/* Fill actual bitmap data length */
bitmapDataLength = Stream_GetPosition(s) - bitmapDataStart;
Stream_SetPosition(s, bitmapDataStart - sizeof(UINT32));
Stream_Write_UINT32(s, bitmapDataLength); /* bitmapDataLength (4 bytes) */
Stream_Seek(s, bitmapDataLength);
}
return error;
}
/**
* Function description
* Send RDPGFX_CMDID_WIRETOSURFACE_1 or RDPGFX_CMDID_WIRETOSURFACE_2
* message according to codecId
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_surface_command(RdpgfxServerContext* context,
RDPGFX_SURFACE_COMMAND* cmd)
{
UINT error = CHANNEL_RC_OK;
wStream* s;
s = rdpgfx_server_single_packet_new(
rdpgfx_surface_command_cmdid(cmd),
rdpgfx_estimate_surface_command(cmd));
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
error = rdpgfx_write_surface_command(s, cmd);
if (error != CHANNEL_RC_OK)
{
WLog_ERR(TAG, "rdpgfx_write_surface_command failed!");
goto error;
}
return rdpgfx_server_single_packet_send(context, s);
error:
Stream_Free(s, TRUE);
return error;
}
/**
* Function description
* Send RDPGFX_CMDID_WIRETOSURFACE_1 or RDPGFX_CMDID_WIRETOSURFACE_2
* message according to codecId.
* Prepend/append start/end frame message in same packet if exists.
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_surface_frame_command(RdpgfxServerContext* context,
RDPGFX_SURFACE_COMMAND* cmd, RDPGFX_START_FRAME_PDU* startFrame,
RDPGFX_END_FRAME_PDU* endFrame)
{
UINT error = CHANNEL_RC_OK;
wStream* s;
UINT32 position = 0;
UINT32 size = rdpgfx_pdu_length(rdpgfx_estimate_surface_command(cmd));
if (startFrame)
{
size += rdpgfx_pdu_length(RDPGFX_START_FRAME_PDU_SIZE);
}
if (endFrame)
{
size += rdpgfx_pdu_length(RDPGFX_END_FRAME_PDU_SIZE);
}
s = Stream_New(NULL, size);
if (!s)
{
WLog_ERR(TAG, "Stream_New failed!");
return CHANNEL_RC_NO_MEMORY;
}
/* Write start frame if exists */
if (startFrame)
{
position = Stream_GetPosition(s);
error = rdpgfx_server_packet_init_header(s,
RDPGFX_CMDID_STARTFRAME, 0);
if (error != CHANNEL_RC_OK)
{
WLog_ERR(TAG, "Failed to init header with error %"PRIu32"!", error);
goto error;
}
rdpgfx_write_start_frame_pdu(s, startFrame);
rdpgfx_server_packet_complete_header(s, position);
}
/* Write RDPGFX_CMDID_WIRETOSURFACE_1 or RDPGFX_CMDID_WIRETOSURFACE_2 */
position = Stream_GetPosition(s);
error = rdpgfx_server_packet_init_header(s,
rdpgfx_surface_command_cmdid(cmd),
0); // Actual length will be filled later
if (error != CHANNEL_RC_OK)
{
WLog_ERR(TAG, "Failed to init header with error %"PRIu32"!", error);
goto error;
}
error = rdpgfx_write_surface_command(s, cmd);
if (error != CHANNEL_RC_OK)
{
WLog_ERR(TAG, "rdpgfx_write_surface_command failed!");
goto error;
}
rdpgfx_server_packet_complete_header(s, position);
/* Write end frame if exists */
if (endFrame)
{
position = Stream_GetPosition(s);
error = rdpgfx_server_packet_init_header(s,
RDPGFX_CMDID_ENDFRAME, 0);
if (error != CHANNEL_RC_OK)
{
WLog_ERR(TAG, "Failed to init header with error %"PRIu32"!", error);
goto error;
}
rdpgfx_write_end_frame_pdu(s, endFrame);
rdpgfx_server_packet_complete_header(s, position);
}
return rdpgfx_server_packet_send(context, s);
error:
Stream_Free(s, TRUE);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_delete_encoding_context_pdu(RdpgfxServerContext*
context,
RDPGFX_DELETE_ENCODING_CONTEXT_PDU* pdu)
{
wStream* s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_DELETEENCODINGCONTEXT, 6);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT16(s, pdu->surfaceId); /* surfaceId (2 bytes) */
Stream_Write_UINT32(s, pdu->codecContextId); /* codecContextId (4 bytes) */
return rdpgfx_server_single_packet_send(context, s);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_solid_fill_pdu(RdpgfxServerContext* context,
RDPGFX_SOLID_FILL_PDU* pdu)
{
UINT error = CHANNEL_RC_OK;
UINT16 index;
RECTANGLE_16* fillRect;
wStream* s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_SOLIDFILL,
8 + 8 * pdu->fillRectCount);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT16(s, pdu->surfaceId); /* surfaceId (2 bytes) */
/* fillPixel (4 bytes) */
if ((error = rdpgfx_write_color32(s, &(pdu->fillPixel))))
{
WLog_ERR(TAG, "rdpgfx_write_color32 failed with error %"PRIu32"!", error);
goto error;
}
Stream_Write_UINT16(s, pdu->fillRectCount); /* fillRectCount (2 bytes) */
for (index = 0; index < pdu->fillRectCount; index++)
{
fillRect = &(pdu->fillRects[index]);
if ((error = rdpgfx_write_rect16(s, fillRect)))
{
WLog_ERR(TAG, "rdpgfx_write_rect16 failed with error %"PRIu32"!", error);
goto error;
}
}
return rdpgfx_server_single_packet_send(context, s);
error:
Stream_Free(s, TRUE);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_surface_to_surface_pdu(RdpgfxServerContext* context,
RDPGFX_SURFACE_TO_SURFACE_PDU* pdu)
{
UINT error = CHANNEL_RC_OK;
UINT16 index;
RDPGFX_POINT16* destPt;
wStream* s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_SURFACETOSURFACE,
14 + 4 * pdu->destPtsCount);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT16(s, pdu->surfaceIdSrc); /* surfaceIdSrc (2 bytes) */
Stream_Write_UINT16(s, pdu->surfaceIdDest); /* surfaceIdDest (2 bytes) */
/* rectSrc (8 bytes ) */
if ((error = rdpgfx_write_rect16(s, &(pdu->rectSrc))))
{
WLog_ERR(TAG, "rdpgfx_write_rect16 failed with error %"PRIu32"!", error);
goto error;
}
Stream_Write_UINT16(s, pdu->destPtsCount); /* destPtsCount (2 bytes) */
for (index = 0; index < pdu->destPtsCount; index++)
{
destPt = &(pdu->destPts[index]);
if ((error = rdpgfx_write_point16(s, destPt)))
{
WLog_ERR(TAG, "rdpgfx_write_point16 failed with error %"PRIu32"!", error);
goto error;
}
}
return rdpgfx_server_single_packet_send(context, s);
error:
Stream_Free(s, TRUE);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_surface_to_cache_pdu(RdpgfxServerContext* context,
RDPGFX_SURFACE_TO_CACHE_PDU* pdu)
{
UINT error = CHANNEL_RC_OK;
wStream* s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_SURFACETOCACHE, 20);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT16(s, pdu->surfaceId); /* surfaceId (2 bytes) */
Stream_Write_UINT64(s, pdu->cacheKey); /* cacheKey (8 bytes) */
Stream_Write_UINT16(s, pdu->cacheSlot); /* cacheSlot (2 bytes) */
/* rectSrc (8 bytes ) */
if ((error = rdpgfx_write_rect16(s, &(pdu->rectSrc))))
{
WLog_ERR(TAG, "rdpgfx_write_rect16 failed with error %"PRIu32"!", error);
goto error;
}
return rdpgfx_server_single_packet_send(context, s);
error:
Stream_Free(s, TRUE);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_cache_to_surface_pdu(RdpgfxServerContext* context,
RDPGFX_CACHE_TO_SURFACE_PDU* pdu)
{
UINT error = CHANNEL_RC_OK;
UINT16 index;
RDPGFX_POINT16* destPt;
wStream* s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_CACHETOSURFACE,
6 + 4 * pdu->destPtsCount);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT16(s, pdu->cacheSlot); /* cacheSlot (2 bytes) */
Stream_Write_UINT16(s, pdu->surfaceId); /* surfaceId (2 bytes) */
Stream_Write_UINT16(s, pdu->destPtsCount); /* destPtsCount (2 bytes) */
for (index = 0; index < pdu->destPtsCount; index++)
{
destPt = &(pdu->destPts[index]);
if ((error = rdpgfx_write_point16(s, destPt)))
{
WLog_ERR(TAG, "rdpgfx_write_point16 failed with error %"PRIu32"", error);
goto error;
}
}
return rdpgfx_server_single_packet_send(context, s);
error:
Stream_Free(s, TRUE);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_map_surface_to_output_pdu(RdpgfxServerContext* context,
RDPGFX_MAP_SURFACE_TO_OUTPUT_PDU* pdu)
{
wStream* s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_MAPSURFACETOOUTPUT, 12);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT16(s, pdu->surfaceId); /* surfaceId (2 bytes) */
Stream_Write_UINT16(s, 0); /* reserved (2 bytes). Must be 0 */
Stream_Write_UINT32(s, pdu->outputOriginX); /* outputOriginX (4 bytes) */
Stream_Write_UINT32(s, pdu->outputOriginY); /* outputOriginY (4 bytes) */
return rdpgfx_server_single_packet_send(context, s);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_send_map_surface_to_window_pdu(RdpgfxServerContext* context,
RDPGFX_MAP_SURFACE_TO_WINDOW_PDU* pdu)
{
wStream* s = rdpgfx_server_single_packet_new(
RDPGFX_CMDID_MAPSURFACETOWINDOW, 18);
if (!s)
{
WLog_ERR(TAG, "rdpgfx_server_single_packet_new failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT16(s, pdu->surfaceId); /* surfaceId (2 bytes) */
Stream_Write_UINT64(s, pdu->windowId); /* windowId (8 bytes) */
Stream_Write_UINT32(s, pdu->mappedWidth); /* mappedWidth (4 bytes) */
Stream_Write_UINT32(s, pdu->mappedHeight); /* mappedHeight (4 bytes) */
return rdpgfx_server_single_packet_send(context, s);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_recv_frame_acknowledge_pdu(RdpgfxServerContext* context,
wStream* s)
{
RDPGFX_FRAME_ACKNOWLEDGE_PDU pdu;
UINT error = CHANNEL_RC_OK;
if (Stream_GetRemainingLength(s) < 12)
{
WLog_ERR(TAG, "not enough data!");
return ERROR_INVALID_DATA;
}
Stream_Read_UINT32(s, pdu.queueDepth); /* queueDepth (4 bytes) */
Stream_Read_UINT32(s, pdu.frameId); /* frameId (4 bytes) */
/* totalFramesDecoded (4 bytes) */
Stream_Read_UINT32(s, pdu.totalFramesDecoded);
if (context)
{
IFCALLRET(context->FrameAcknowledge, error, context, &pdu);
if (error)
WLog_ERR(TAG, "context->FrameAcknowledge failed with error %"PRIu32"",
error);
}
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_recv_cache_import_offer_pdu(RdpgfxServerContext* context,
wStream* s)
{
UINT16 index;
RDPGFX_CACHE_IMPORT_OFFER_PDU pdu;
RDPGFX_CACHE_ENTRY_METADATA* cacheEntries;
UINT error = CHANNEL_RC_OK;
if (Stream_GetRemainingLength(s) < 2)
{
WLog_ERR(TAG, "not enough data!");
return ERROR_INVALID_DATA;
}
/* cacheEntriesCount (2 bytes) */
Stream_Read_UINT16(s, pdu.cacheEntriesCount);
if (pdu.cacheEntriesCount <= 0)
{
/* According to the latest spec, capsSetCount <= 3 */
WLog_ERR(TAG, "Invalid cacheEntriesCount: %"PRIu16"", pdu.cacheEntriesCount);
return ERROR_INVALID_DATA;
}
if (Stream_GetRemainingLength(s) < (pdu.cacheEntriesCount * 12))
{
WLog_ERR(TAG, "not enough data!");
return ERROR_INVALID_DATA;
}
pdu.cacheEntries = (RDPGFX_CACHE_ENTRY_METADATA*)
calloc(pdu.cacheEntriesCount,
sizeof(RDPGFX_CACHE_ENTRY_METADATA));
if (!pdu.cacheEntries)
{
WLog_ERR(TAG, "calloc failed!");
return CHANNEL_RC_NO_MEMORY;
}
for (index = 0; index < pdu.cacheEntriesCount; index++)
{
cacheEntries = &(pdu.cacheEntries[index]);
Stream_Read_UINT64(s, cacheEntries->cacheKey); /* cacheKey (8 bytes) */
/* bitmapLength (4 bytes) */
Stream_Read_UINT32(s, cacheEntries->bitmapLength);
}
if (context)
{
IFCALLRET(context->CacheImportOffer, error, context, &pdu);
if (error)
WLog_ERR(TAG, "context->CacheImportOffer failed with error %"PRIu32"",
error);
}
free(pdu.cacheEntries);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_recv_caps_advertise_pdu(RdpgfxServerContext* context,
wStream* s)
{
UINT16 index;
RDPGFX_CAPSET* capsSets;
RDPGFX_CAPS_ADVERTISE_PDU pdu;
UINT error = CHANNEL_RC_OK;
UINT32 capsDataLength;
if (Stream_GetRemainingLength(s) < 2)
{
WLog_ERR(TAG, "not enough data!");
return ERROR_INVALID_DATA;
}
Stream_Read_UINT16(s, pdu.capsSetCount); /* capsSetCount (2 bytes) */
if (Stream_GetRemainingLength(s) < (pdu.capsSetCount * RDPGFX_CAPSET_SIZE))
{
WLog_ERR(TAG, "not enough data!");
return ERROR_INVALID_DATA;
}
capsSets = calloc(pdu.capsSetCount, RDPGFX_CAPSET_SIZE);
if (!capsSets)
return ERROR_OUTOFMEMORY;
pdu.capsSets = (RDPGFX_CAPSET*) capsSets;
for (index = 0; index < pdu.capsSetCount; index++)
{
RDPGFX_CAPSET* capsSet = &(pdu.capsSets[index]);
Stream_Read_UINT32(s, capsSet->version); /* version (4 bytes) */
Stream_Read_UINT32(s, capsDataLength); /* capsDataLength (4 bytes) */
if (capsDataLength != 4)
{
WLog_ERR(TAG, "capsDataLength does not equal to 4: %"PRIu32"",
capsDataLength);
free(capsSets);
return ERROR_INVALID_DATA;
}
Stream_Read_UINT32(s, capsSet->flags); /* capsData (4 bytes) */
}
if (context)
{
IFCALLRET(context->CapsAdvertise, error, context, &pdu);
if (error)
WLog_ERR(TAG, "context->CapsAdvertise failed with error %"PRIu32"", error);
}
free(capsSets);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_recv_qoe_frame_acknowledge_pdu(RdpgfxServerContext* context,
wStream* s)
{
RDPGFX_QOE_FRAME_ACKNOWLEDGE_PDU pdu;
UINT error = CHANNEL_RC_OK;
if (Stream_GetRemainingLength(s) < 12)
{
WLog_ERR(TAG, "not enough data!");
return ERROR_INVALID_DATA;
}
Stream_Read_UINT32(s, pdu.frameId); /* frameId (4 bytes) */
Stream_Read_UINT32(s, pdu.timestamp); /* timestamp (4 bytes) */
Stream_Read_UINT16(s, pdu.timeDiffSE); /* timeDiffSE (2 bytes) */
Stream_Read_UINT16(s, pdu.timeDiffEDR); /* timeDiffEDR (2 bytes) */
if (context)
{
IFCALLRET(context->QoeFrameAcknowledge, error, context, &pdu);
if (error)
WLog_ERR(TAG, "context->QoeFrameAcknowledge failed with error %"PRIu32"",
error);
}
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpgfx_server_receive_pdu(RdpgfxServerContext* context, wStream* s)
{
int beg, end;
RDPGFX_HEADER header;
UINT error = CHANNEL_RC_OK;
beg = Stream_GetPosition(s);
if ((error = rdpgfx_read_header(s, &header)))
{
WLog_ERR(TAG, "rdpgfx_read_header failed with error %"PRIu32"!", error);
return error;
}
WLog_DBG(TAG, "cmdId: %s (0x%04"PRIX16") flags: 0x%04"PRIX16" pduLength: %"PRIu32"",
rdpgfx_get_cmd_id_string(header.cmdId), header.cmdId,
header.flags, header.pduLength);
switch (header.cmdId)
{
case RDPGFX_CMDID_FRAMEACKNOWLEDGE:
if ((error = rdpgfx_recv_frame_acknowledge_pdu(context, s)))
WLog_ERR(TAG, "rdpgfx_recv_frame_acknowledge_pdu "
"failed with error %"PRIu32"!", error);
break;
case RDPGFX_CMDID_CACHEIMPORTOFFER:
if ((error = rdpgfx_recv_cache_import_offer_pdu(context, s)))
WLog_ERR(TAG, "rdpgfx_recv_cache_import_offer_pdu "
"failed with error %"PRIu32"!", error);
break;
case RDPGFX_CMDID_CAPSADVERTISE:
if ((error = rdpgfx_recv_caps_advertise_pdu(context, s)))
WLog_ERR(TAG, "rdpgfx_recv_caps_advertise_pdu "
"failed with error %"PRIu32"!", error);
break;
case RDPGFX_CMDID_QOEFRAMEACKNOWLEDGE:
if ((error = rdpgfx_recv_qoe_frame_acknowledge_pdu(context, s)))
WLog_ERR(TAG, "rdpgfx_recv_qoe_frame_acknowledge_pdu "
"failed with error %"PRIu32"!", error);
break;
default:
error = CHANNEL_RC_BAD_PROC;
break;
}
if (error)
{
WLog_ERR(TAG, "Error while parsing GFX cmdId: %s (0x%04"PRIX16")",
rdpgfx_get_cmd_id_string(header.cmdId), header.cmdId);
return error;
}
end = Stream_GetPosition(s);
if (end != (beg + header.pduLength))
{
WLog_ERR(TAG, "Unexpected gfx pdu end: Actual: %d, Expected: %"PRIu32"",
end, (beg + header.pduLength));
Stream_SetPosition(s, (beg + header.pduLength));
}
return error;
}
static void* rdpgfx_server_thread_func(void* arg)
{
RdpgfxServerContext* context = (RdpgfxServerContext*) arg;
RdpgfxServerPrivate* priv = context->priv;
DWORD status;
DWORD nCount;
void* buffer;
HANDLE events[8];
UINT error = CHANNEL_RC_OK;
buffer = NULL;
nCount = 0;
events[nCount++] = priv->stopEvent;
events[nCount++] = priv->channelEvent;
/* Main virtual channel loop. RDPGFX do not need version negotiation */
while (TRUE)
{
status = WaitForMultipleObjects(nCount, events, FALSE, INFINITE);
if (status == WAIT_FAILED)
{
error = GetLastError();
WLog_ERR(TAG, "WaitForMultipleObjects failed with error %"PRIu32"", error);
break;
}
/* Stop Event */
if (status == WAIT_OBJECT_0)
break;
if ((error = rdpgfx_server_handle_messages(context)))
{
WLog_ERR(TAG, "rdpgfx_server_handle_messages failed with error %"PRIu32"",
error);
break;
}
}
if (error && context->rdpcontext)
setChannelError(context->rdpcontext, error,
"rdpgfx_server_thread_func reported an error");
ExitThread((DWORD)error);
return NULL;
}
static BOOL rdpgfx_server_open(RdpgfxServerContext* context)
{
RdpgfxServerPrivate* priv = (RdpgfxServerPrivate*) context->priv;
void* buffer = NULL;
if (!priv->isOpened)
{
PULONG pSessionId = NULL;
DWORD BytesReturned = 0;
priv->SessionId = WTS_CURRENT_SESSION;
if (WTSQuerySessionInformationA(context->vcm, WTS_CURRENT_SESSION,
WTSSessionId, (LPSTR*) &pSessionId,
&BytesReturned) == FALSE)
{
WLog_ERR(TAG, "WTSQuerySessionInformationA failed!");
return FALSE;
}
priv->SessionId = (DWORD) * pSessionId;
WTSFreeMemory(pSessionId);
priv->rdpgfx_channel = WTSVirtualChannelOpenEx(priv->SessionId,
RDPGFX_DVC_CHANNEL_NAME,
WTS_CHANNEL_OPTION_DYNAMIC);
if (!priv->rdpgfx_channel)
{
WLog_ERR(TAG, "WTSVirtualChannelOpenEx failed!");
return FALSE;
}
/* Query for channel event handle */
if (!WTSVirtualChannelQuery(priv->rdpgfx_channel, WTSVirtualEventHandle,
&buffer, &BytesReturned)
|| (BytesReturned != sizeof(HANDLE)))
{
WLog_ERR(TAG, "WTSVirtualChannelQuery failed "
"or invalid returned size(%"PRIu32")",
BytesReturned);
if (buffer)
WTSFreeMemory(buffer);
goto out_close;
}
CopyMemory(&priv->channelEvent, buffer, sizeof(HANDLE));
WTSFreeMemory(buffer);
if (!(priv->zgfx = zgfx_context_new(TRUE)))
{
WLog_ERR(TAG, "Create zgfx context failed!");
goto out_close;
}
if (priv->ownThread)
{
if (!(priv->stopEvent = CreateEvent(NULL, TRUE, FALSE, NULL)))
{
WLog_ERR(TAG, "CreateEvent failed!");
goto out_zgfx;
}
if (!(priv->thread = CreateThread(NULL, 0,
(LPTHREAD_START_ROUTINE)
rdpgfx_server_thread_func,
(void*) context, 0, NULL)))
{
WLog_ERR(TAG, "CreateThread failed!");
goto out_stopEvent;
}
}
priv->isOpened = TRUE;
priv->isReady = FALSE;
return TRUE;
}
WLog_ERR(TAG, "RDPGFX channel is already opened!");
return FALSE;
out_stopEvent:
CloseHandle(priv->stopEvent);
priv->stopEvent = NULL;
out_zgfx:
zgfx_context_free(priv->zgfx);
priv->zgfx = NULL;
out_close:
WTSVirtualChannelClose(priv->rdpgfx_channel);
priv->rdpgfx_channel = NULL;
priv->channelEvent = NULL;
return FALSE;
}
static BOOL rdpgfx_server_close(RdpgfxServerContext* context)
{
RdpgfxServerPrivate* priv = (RdpgfxServerPrivate*) context->priv;
if (priv->ownThread && priv->thread)
{
SetEvent(priv->stopEvent);
if (WaitForSingleObject(priv->thread, INFINITE) == WAIT_FAILED)
{
WLog_ERR(TAG, "WaitForSingleObject failed with error %"PRIu32"",
GetLastError());
return FALSE;
}
CloseHandle(priv->thread);
CloseHandle(priv->stopEvent);
priv->thread = NULL;
priv->stopEvent = NULL;
}
zgfx_context_free(priv->zgfx);
priv->zgfx = NULL;
if (priv->rdpgfx_channel)
{
WTSVirtualChannelClose(priv->rdpgfx_channel);
priv->rdpgfx_channel = NULL;
}
priv->channelEvent = NULL;
priv->isOpened = FALSE;
priv->isReady = FALSE;
return TRUE;
}
RdpgfxServerContext* rdpgfx_server_context_new(HANDLE vcm)
{
RdpgfxServerContext* context;
RdpgfxServerPrivate* priv;
context = (RdpgfxServerContext*)calloc(1, sizeof(RdpgfxServerContext));
if (!context)
{
WLog_ERR(TAG, "calloc failed!");
return NULL;
}
context->vcm = vcm;
context->Open = rdpgfx_server_open;
context->Close = rdpgfx_server_close;
context->ResetGraphics = rdpgfx_send_reset_graphics_pdu;
context->StartFrame = rdpgfx_send_start_frame_pdu;
context->EndFrame = rdpgfx_send_end_frame_pdu;
context->SurfaceCommand = rdpgfx_send_surface_command;
context->SurfaceFrameCommand = rdpgfx_send_surface_frame_command;
context->DeleteEncodingContext = rdpgfx_send_delete_encoding_context_pdu;
context->CreateSurface = rdpgfx_send_create_surface_pdu;
context->DeleteSurface = rdpgfx_send_delete_surface_pdu;
context->SolidFill = rdpgfx_send_solid_fill_pdu;
context->SurfaceToSurface = rdpgfx_send_surface_to_surface_pdu;
context->SurfaceToCache = rdpgfx_send_surface_to_cache_pdu;
context->CacheToSurface = rdpgfx_send_cache_to_surface_pdu;
context->CacheImportOffer = NULL;
context->CacheImportReply = rdpgfx_send_cache_import_reply_pdu;
context->EvictCacheEntry = rdpgfx_send_evict_cache_entry_pdu;
context->MapSurfaceToOutput = rdpgfx_send_map_surface_to_output_pdu;
context->MapSurfaceToWindow = rdpgfx_send_map_surface_to_window_pdu;
context->CapsAdvertise = NULL;
context->CapsConfirm = rdpgfx_send_caps_confirm_pdu;
context->FrameAcknowledge = NULL;
context->QoeFrameAcknowledge = NULL;
context->priv = priv = (RdpgfxServerPrivate*)
calloc(1, sizeof(RdpgfxServerPrivate));
if (!priv)
{
WLog_ERR(TAG, "calloc failed!");
goto out_free;
}
/* Create shared input stream */
priv->input_stream = Stream_New(NULL, 4);
if (!priv->input_stream)
{
WLog_ERR(TAG, "Stream_New failed!");
goto out_free_priv;
}
priv->isOpened = FALSE;
priv->isReady = FALSE;
priv->ownThread = TRUE;
return (RdpgfxServerContext*) context;
out_free_priv:
free(context->priv);
out_free:
free(context);
return NULL;
}
void rdpgfx_server_context_free(RdpgfxServerContext* context)
{
rdpgfx_server_close(context);
if (context->priv)
Stream_Free(context->priv->input_stream, TRUE);
free(context->priv);
free(context);
}
HANDLE rdpgfx_server_get_event_handle(RdpgfxServerContext* context)
{
return context->priv->channelEvent;
}
/*
* Handle rpdgfx messages - server side
*
* @param Server side context
*
* @return 0 on success
* ERROR_NO_DATA if no data could be read this time
* otherwise a Win32 error code
*/
UINT rdpgfx_server_handle_messages(RdpgfxServerContext* context)
{
DWORD BytesReturned;
void* buffer;
UINT ret = CHANNEL_RC_OK;
RdpgfxServerPrivate* priv = context->priv;
wStream* s = priv->input_stream;
/* Check whether the dynamic channel is ready */
if (!priv->isReady)
{
if (WTSVirtualChannelQuery(priv->rdpgfx_channel,
WTSVirtualChannelReady,
&buffer, &BytesReturned) == FALSE)
{
if (GetLastError() == ERROR_NO_DATA)
return ERROR_NO_DATA;
WLog_ERR(TAG, "WTSVirtualChannelQuery failed");
return ERROR_INTERNAL_ERROR;
}
priv->isReady = *((BOOL*) buffer);
WTSFreeMemory(buffer);
}
/* Consume channel event only after the gfx dynamic channel is ready */
if (priv->isReady)
{
Stream_SetPosition(s, 0);
if (!WTSVirtualChannelRead(priv->rdpgfx_channel,
0, NULL, 0, &BytesReturned))
{
if (GetLastError() == ERROR_NO_DATA)
return ERROR_NO_DATA;
WLog_ERR(TAG, "WTSVirtualChannelRead failed!");
return ERROR_INTERNAL_ERROR;
}
if (BytesReturned < 1)
return CHANNEL_RC_OK;
if (!Stream_EnsureRemainingCapacity(s, BytesReturned))
{
WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
return CHANNEL_RC_NO_MEMORY;
}
if (WTSVirtualChannelRead(priv->rdpgfx_channel, 0,
(PCHAR) Stream_Buffer(s),
Stream_Capacity(s), &BytesReturned) == FALSE)
{
WLog_ERR(TAG, "WTSVirtualChannelRead failed!");
return ERROR_INTERNAL_ERROR;
}
Stream_SetLength(s, BytesReturned);
Stream_SetPosition(s, 0);
while (Stream_GetPosition(s) < Stream_Length(s))
{
if ((ret = rdpgfx_server_receive_pdu(context, s)))
{
WLog_ERR(TAG, "rdpgfx_server_receive_pdu "
"failed with error %"PRIu32"!", ret);
return ret;
}
}
}
return ret;
}
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