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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Clipboard Virtual Channel
*
* Copyright 2009-2011 Jay Sorg
* Copyright 2010-2011 Vic Lee
* Copyright 2015 Thincast Technologies GmbH
* Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.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.
*/
#include <freerdp/config.h>
#include <winpr/crt.h>
#include <winpr/print.h>
#include <freerdp/types.h>
#include <freerdp/freerdp.h>
#include <freerdp/settings.h>
#include <freerdp/constants.h>
#include <freerdp/client/cliprdr.h>
#include "cliprdr_main.h"
#include "cliprdr_format.h"
#include "../cliprdr_common.h"
CLIPRDR_FORMAT_LIST cliprdr_filter_format_list(const CLIPRDR_FORMAT_LIST* list, const UINT32 mask,
const UINT32 checkMask)
{
const UINT32 maskData =
checkMask & (CLIPRDR_FLAG_LOCAL_TO_REMOTE | CLIPRDR_FLAG_REMOTE_TO_LOCAL);
const UINT32 maskFiles =
checkMask & (CLIPRDR_FLAG_LOCAL_TO_REMOTE_FILES | CLIPRDR_FLAG_REMOTE_TO_LOCAL_FILES);
WINPR_ASSERT(list);
CLIPRDR_FORMAT_LIST filtered = { 0 };
filtered.common.msgType = CB_FORMAT_LIST;
filtered.numFormats = list->numFormats;
filtered.formats = calloc(filtered.numFormats, sizeof(CLIPRDR_FORMAT));
size_t wpos = 0;
if ((mask & checkMask) == checkMask)
{
for (size_t x = 0; x < list->numFormats; x++)
{
const CLIPRDR_FORMAT* format = &list->formats[x];
CLIPRDR_FORMAT* cur = &filtered.formats[x];
cur->formatId = format->formatId;
if (format->formatName)
cur->formatName = _strdup(format->formatName);
wpos++;
}
}
else if ((mask & maskFiles) != 0)
{
for (size_t x = 0; x < list->numFormats; x++)
{
const CLIPRDR_FORMAT* format = &list->formats[x];
CLIPRDR_FORMAT* cur = &filtered.formats[wpos];
if (!format->formatName)
continue;
if (strcmp(format->formatName, type_FileGroupDescriptorW) == 0 ||
strcmp(format->formatName, type_FileContents) == 0)
{
cur->formatId = format->formatId;
cur->formatName = _strdup(format->formatName);
wpos++;
}
}
}
else if ((mask & maskData) != 0)
{
for (size_t x = 0; x < list->numFormats; x++)
{
const CLIPRDR_FORMAT* format = &list->formats[x];
CLIPRDR_FORMAT* cur = &filtered.formats[wpos];
if (!format->formatName ||
(strcmp(format->formatName, type_FileGroupDescriptorW) != 0 &&
strcmp(format->formatName, type_FileContents) != 0))
{
cur->formatId = format->formatId;
if (format->formatName)
cur->formatName = _strdup(format->formatName);
wpos++;
}
}
}
filtered.numFormats = wpos;
return filtered;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
UINT cliprdr_process_format_list(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
UINT16 msgFlags)
{
CLIPRDR_FORMAT_LIST formatList = { 0 };
CLIPRDR_FORMAT_LIST filteredFormatList = { 0 };
CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
UINT error = CHANNEL_RC_OK;
formatList.common.msgType = CB_FORMAT_LIST;
formatList.common.msgFlags = msgFlags;
formatList.common.dataLen = dataLen;
if ((error = cliprdr_read_format_list(s, &formatList, cliprdr->useLongFormatNames)))
goto error_out;
const UINT32 mask =
freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask);
filteredFormatList = cliprdr_filter_format_list(
&formatList, mask, CLIPRDR_FLAG_REMOTE_TO_LOCAL | CLIPRDR_FLAG_REMOTE_TO_LOCAL_FILES);
if (filteredFormatList.numFormats == 0)
goto error_out;
WLog_Print(cliprdr->log, WLOG_DEBUG, "ServerFormatList: numFormats: %" PRIu32 "",
filteredFormatList.numFormats);
if (context->ServerFormatList)
{
if ((error = context->ServerFormatList(context, &filteredFormatList)))
WLog_ERR(TAG, "ServerFormatList failed with error %" PRIu32 "", error);
}
error_out:
cliprdr_free_format_list(&filteredFormatList);
cliprdr_free_format_list(&formatList);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
UINT cliprdr_process_format_list_response(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
UINT16 msgFlags)
{
CLIPRDR_FORMAT_LIST_RESPONSE formatListResponse = { 0 };
CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
UINT error = CHANNEL_RC_OK;
WLog_Print(cliprdr->log, WLOG_DEBUG, "ServerFormatListResponse");
formatListResponse.common.msgType = CB_FORMAT_LIST_RESPONSE;
formatListResponse.common.msgFlags = msgFlags;
formatListResponse.common.dataLen = dataLen;
IFCALLRET(context->ServerFormatListResponse, error, context, &formatListResponse);
if (error)
WLog_ERR(TAG, "ServerFormatListResponse failed with error %" PRIu32 "!", error);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
UINT cliprdr_process_format_data_request(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
UINT16 msgFlags)
{
CLIPRDR_FORMAT_DATA_REQUEST formatDataRequest = { 0 };
CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
UINT error = CHANNEL_RC_OK;
WLog_Print(cliprdr->log, WLOG_DEBUG, "ServerFormatDataRequest");
formatDataRequest.common.msgType = CB_FORMAT_DATA_REQUEST;
formatDataRequest.common.msgFlags = msgFlags;
formatDataRequest.common.dataLen = dataLen;
if ((error = cliprdr_read_format_data_request(s, &formatDataRequest)))
return error;
const UINT32 mask =
freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask);
if ((mask & (CLIPRDR_FLAG_LOCAL_TO_REMOTE | CLIPRDR_FLAG_LOCAL_TO_REMOTE_FILES)) == 0)
{
return cliprdr_send_error_response(cliprdr, CB_FORMAT_DATA_RESPONSE);
}
context->lastRequestedFormatId = formatDataRequest.requestedFormatId;
IFCALLRET(context->ServerFormatDataRequest, error, context, &formatDataRequest);
if (error)
WLog_ERR(TAG, "ServerFormatDataRequest failed with error %" PRIu32 "!", error);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
UINT cliprdr_process_format_data_response(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
UINT16 msgFlags)
{
CLIPRDR_FORMAT_DATA_RESPONSE formatDataResponse = { 0 };
CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
UINT error = CHANNEL_RC_OK;
WLog_Print(cliprdr->log, WLOG_DEBUG, "ServerFormatDataResponse");
formatDataResponse.common.msgType = CB_FORMAT_DATA_RESPONSE;
formatDataResponse.common.msgFlags = msgFlags;
formatDataResponse.common.dataLen = dataLen;
if ((error = cliprdr_read_format_data_response(s, &formatDataResponse)))
return error;
const UINT32 mask =
freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask);
if ((mask & (CLIPRDR_FLAG_REMOTE_TO_LOCAL | CLIPRDR_FLAG_REMOTE_TO_LOCAL_FILES)) == 0)
{
WLog_WARN(TAG,
"Received ServerFormatDataResponse but remote -> local clipboard is disabled");
return CHANNEL_RC_OK;
}
IFCALLRET(context->ServerFormatDataResponse, error, context, &formatDataResponse);
if (error)
WLog_ERR(TAG, "ServerFormatDataResponse failed with error %" PRIu32 "!", error);
return error;
}
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