FreeRDP/channels/cliprdr/client/cliprdr_format.c

363 lines
9.3 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Clipboard Virtual Channel
*
* Copyright 2009-2011 Jay Sorg
* Copyright 2010-2011 Vic Lee
*
* 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winpr/crt.h>
#include <winpr/print.h>
#include <freerdp/types.h>
#include <freerdp/constants.h>
#include <freerdp/utils/svc_plugin.h>
#include <freerdp/client/cliprdr.h>
#include "cliprdr_constants.h"
#include "cliprdr_main.h"
#include "cliprdr_format.h"
#define CFSTR_HTML "H\0T\0M\0L\0 \0F\0o\0r\0m\0a\0t\0\0"
#define CFSTR_PNG "P\0N\0G\0\0"
#define CFSTR_JPEG "J\0F\0I\0F\0\0"
#define CFSTR_GIF "G\0I\0F\0\0"
void cliprdr_process_format_list_event(cliprdrPlugin* cliprdr, RDP_CB_FORMAT_LIST_EVENT* cb_event)
{
int i;
wStream* s;
DEBUG_CLIPRDR("Sending Clipboard Format List");
if (cb_event->raw_format_data)
{
s = cliprdr_packet_new(CB_FORMAT_LIST, 0, cb_event->raw_format_data_size);
Stream_Write(s, cb_event->raw_format_data, cb_event->raw_format_data_size);
}
else
{
wStream* body = Stream_New(NULL, 64);
for (i = 0; i < cb_event->num_formats; i++)
{
const char* name;
int name_length;
switch (cb_event->formats[i])
{
case CB_FORMAT_HTML:
name = CFSTR_HTML; name_length = sizeof(CFSTR_HTML);
break;
case CB_FORMAT_PNG:
name = CFSTR_PNG; name_length = sizeof(CFSTR_PNG);
break;
case CB_FORMAT_JPEG:
name = CFSTR_JPEG; name_length = sizeof(CFSTR_JPEG);
break;
case CB_FORMAT_GIF:
name = CFSTR_GIF; name_length = sizeof(CFSTR_GIF);
break;
default:
name = "\0\0";
name_length = 2;
break;
}
if (!cliprdr->use_long_format_names)
name_length = 32;
Stream_EnsureRemainingCapacity(body, 4 + name_length);
Stream_Write_UINT32(body, cb_event->formats[i]);
Stream_Write(body, name, name_length);
}
Stream_SealLength(body);
s = cliprdr_packet_new(CB_FORMAT_LIST, 0, Stream_Length(body));
Stream_Write(s, Stream_Buffer(body), Stream_Length(body));
Stream_Free(body, TRUE);
}
cliprdr_packet_send(cliprdr, s);
}
static void cliprdr_send_format_list_response(cliprdrPlugin* cliprdr)
{
wStream* s;
DEBUG_CLIPRDR("Sending Clipboard Format List Response");
s = cliprdr_packet_new(CB_FORMAT_LIST_RESPONSE, CB_RESPONSE_OK, 0);
cliprdr_packet_send(cliprdr, s);
}
void cliprdr_process_short_format_names(cliprdrPlugin* cliprdr, wStream* s, UINT32 length, UINT16 flags)
{
int i;
BOOL ascii;
int num_formats;
CLIPRDR_FORMAT_NAME* format_name;
num_formats = length / 36;
if (num_formats <= 0)
{
cliprdr->format_names = NULL;
cliprdr->num_format_names = 0;
return;
}
if (num_formats * 36 != length)
DEBUG_WARN("dataLen %d not divided by 36!", length);
ascii = (flags & CB_ASCII_NAMES) ? TRUE : FALSE;
cliprdr->format_names = (CLIPRDR_FORMAT_NAME*) malloc(sizeof(CLIPRDR_FORMAT_NAME) * num_formats);
cliprdr->num_format_names = num_formats;
for (i = 0; i < num_formats; i++)
{
format_name = &cliprdr->format_names[i];
Stream_Read_UINT32(s, format_name->id);
if (ascii)
{
format_name->name = _strdup((char*) s->pointer);
format_name->length = strlen(format_name->name);
}
else
{
format_name->name = NULL;
format_name->length = ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) s->pointer, 32 / 2, &format_name->name, 0, NULL, NULL);
}
Stream_Seek(s, 32);
}
}
void cliprdr_process_long_format_names(cliprdrPlugin* cliprdr, wStream* s, UINT32 length, UINT16 flags)
{
int allocated_formats = 8;
BYTE* end_mark;
CLIPRDR_FORMAT_NAME* format_name;
Stream_GetPointer(s, end_mark);
end_mark += length;
cliprdr->format_names = (CLIPRDR_FORMAT_NAME*) malloc(sizeof(CLIPRDR_FORMAT_NAME) * allocated_formats);
cliprdr->num_format_names = 0;
while (Stream_GetRemainingLength(s) >= 6)
{
BYTE* p;
int name_len;
if (cliprdr->num_format_names >= allocated_formats)
{
allocated_formats *= 2;
cliprdr->format_names = (CLIPRDR_FORMAT_NAME*) realloc(cliprdr->format_names,
sizeof(CLIPRDR_FORMAT_NAME) * allocated_formats);
}
format_name = &cliprdr->format_names[cliprdr->num_format_names++];
Stream_Read_UINT32(s, format_name->id);
format_name->name = NULL;
format_name->length = 0;
for (p = Stream_Pointer(s), name_len = 0; p + 1 < end_mark; p += 2, name_len += 2)
{
if (*((unsigned short*) p) == 0)
break;
}
format_name->length = ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(s), name_len / 2, &format_name->name, 0, NULL, NULL);
Stream_Seek(s, name_len + 2);
}
}
void cliprdr_process_format_list(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen, UINT16 msgFlags)
{
int i;
UINT32 format;
BOOL supported;
CLIPRDR_FORMAT_NAME* format_name;
RDP_CB_FORMAT_LIST_EVENT* cb_event;
cb_event = (RDP_CB_FORMAT_LIST_EVENT*) freerdp_event_new(CliprdrChannel_Class,
CliprdrChannel_FormatList, NULL, NULL);
if (dataLen > 0)
{
cb_event->raw_format_data = (BYTE*) malloc(dataLen);
memcpy(cb_event->raw_format_data, Stream_Pointer(s), dataLen);
cb_event->raw_format_data_size = dataLen;
}
if (cliprdr->use_long_format_names)
cliprdr_process_long_format_names(cliprdr, s, dataLen, msgFlags);
else
cliprdr_process_short_format_names(cliprdr, s, dataLen, msgFlags);
if (cliprdr->num_format_names > 0)
cb_event->formats = (UINT32*) malloc(sizeof(UINT32) * cliprdr->num_format_names);
cb_event->num_formats = 0;
for (i = 0; i < cliprdr->num_format_names; i++)
{
supported = TRUE;
format_name = &cliprdr->format_names[i];
format = format_name->id;
switch (format)
{
case CB_FORMAT_TEXT:
case CB_FORMAT_DIB:
case CB_FORMAT_UNICODETEXT:
break;
default:
if (format_name->length > 0)
{
DEBUG_CLIPRDR("format: %s", format_name->name);
if (strcmp(format_name->name, "HTML Format") == 0)
{
format = CB_FORMAT_HTML;
break;
}
if (strcmp(format_name->name, "PNG") == 0)
{
format = CB_FORMAT_PNG;
break;
}
if (strcmp(format_name->name, "JFIF") == 0)
{
format = CB_FORMAT_JPEG;
break;
}
if (strcmp(format_name->name, "GIF") == 0)
{
format = CB_FORMAT_GIF;
break;
}
}
else
{
supported = FALSE;
}
break;
}
if (supported)
cb_event->formats[cb_event->num_formats++] = format;
if (format_name->length > 0)
free(format_name->name);
}
free(cliprdr->format_names);
cliprdr->format_names = NULL;
cliprdr->num_format_names = 0;
svc_plugin_send_event((rdpSvcPlugin*) cliprdr, (wMessage*) cb_event);
cliprdr_send_format_list_response(cliprdr);
}
void cliprdr_process_format_list_response(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen, UINT16 msgFlags)
{
/* http://msdn.microsoft.com/en-us/library/hh872154.aspx */
wMessage* event;
if ((msgFlags & CB_RESPONSE_FAIL) != 0)
{
/* In case of an error the clipboard will not be synchronized with the server.
* Post this event to restart format negociation and data transfer. */
event = freerdp_event_new(CliprdrChannel_Class, CliprdrChannel_MonitorReady, NULL, NULL);
svc_plugin_send_event((rdpSvcPlugin*) cliprdr, event);
}
}
void cliprdr_process_format_data_request(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen, UINT16 msgFlags)
{
RDP_CB_DATA_REQUEST_EVENT* cb_event;
cb_event = (RDP_CB_DATA_REQUEST_EVENT*) freerdp_event_new(CliprdrChannel_Class,
CliprdrChannel_DataRequest, NULL, NULL);
Stream_Read_UINT32(s, cb_event->format);
svc_plugin_send_event((rdpSvcPlugin*) cliprdr, (wMessage*) cb_event);
}
void cliprdr_process_format_data_response_event(cliprdrPlugin* cliprdr, RDP_CB_DATA_RESPONSE_EVENT* cb_event)
{
wStream* s;
DEBUG_CLIPRDR("Sending Format Data Response");
if (cb_event->size > 0)
{
s = cliprdr_packet_new(CB_FORMAT_DATA_RESPONSE, CB_RESPONSE_OK, cb_event->size);
Stream_Write(s, cb_event->data, cb_event->size);
}
else
{
s = cliprdr_packet_new(CB_FORMAT_DATA_RESPONSE, CB_RESPONSE_FAIL, 0);
}
cliprdr_packet_send(cliprdr, s);
}
void cliprdr_process_format_data_request_event(cliprdrPlugin* cliprdr, RDP_CB_DATA_REQUEST_EVENT* cb_event)
{
wStream* s;
DEBUG_CLIPRDR("Sending Format Data Request");
s = cliprdr_packet_new(CB_FORMAT_DATA_REQUEST, 0, 4);
Stream_Write_UINT32(s, cb_event->format);
cliprdr_packet_send(cliprdr, s);
}
void cliprdr_process_format_data_response(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen, UINT16 msgFlags)
{
RDP_CB_DATA_RESPONSE_EVENT* cb_event;
cb_event = (RDP_CB_DATA_RESPONSE_EVENT*) freerdp_event_new(CliprdrChannel_Class,
CliprdrChannel_DataResponse, NULL, NULL);
if (dataLen > 0)
{
cb_event->size = dataLen;
cb_event->data = (BYTE*) malloc(dataLen);
CopyMemory(cb_event->data, Stream_Pointer(s), dataLen);
}
svc_plugin_send_event((rdpSvcPlugin*) cliprdr, (wMessage*) cb_event);
}