/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT xf_cliprdr_server_format_data_request(CliprdrClientContext* context,
CLIPRDR_FORMAT_DATA_REQUEST* formatDataRequest)
{
BOOL rawTransfer;
xfCliprdrFormat* format = NULL;
UINT32 formatId = formatDataRequest->requestedFormatId;
xfClipboard* clipboard = (xfClipboard*) context->custom;
xfContext* xfc = clipboard->xfc;
rawTransfer = xf_cliprdr_is_raw_transfer_available(clipboard);
if (rawTransfer)
{
format = xf_cliprdr_get_client_format_by_id(clipboard, CF_RAW);
XChangeProperty(xfc->display, xfc->drawable, clipboard->property_atom,
XA_INTEGER, 32, PropModeReplace, (BYTE*) &formatId, 1);
}
else
format = xf_cliprdr_get_client_format_by_id(clipboard, formatId);
if (!format)
return xf_cliprdr_send_data_response(clipboard, NULL, 0);
clipboard->requestedFormatId = rawTransfer ? CF_RAW : formatId;
XConvertSelection(xfc->display, clipboard->clipboard_atom,
format->atom, clipboard->property_atom, xfc->drawable, CurrentTime);
XFlush(xfc->display);
/* After this point, we expect a SelectionNotify event from the clipboard owner. */
return CHANNEL_RC_OK;
}
static void xf_cliprdr_process_requested_data(xfInfo* xfi, boolean has_data, uint8* data, int size)
{
uint8* outbuf;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
if (cb->incr_starts && has_data)
return;
if (!has_data || data == NULL)
{
xf_cliprdr_send_null_data_response(xfi);
return;
}
switch (cb->format_mappings[cb->request_index].format_id)
{
case CB_FORMAT_RAW:
case CB_FORMAT_PNG:
case CB_FORMAT_JPEG:
case CB_FORMAT_GIF:
outbuf = xf_cliprdr_process_requested_raw(data, &size);
break;
case CB_FORMAT_UNICODETEXT:
outbuf = xf_cliprdr_process_requested_unicodetext(data, &size);
break;
case CB_FORMAT_TEXT:
outbuf = xf_cliprdr_process_requested_text(data, &size);
break;
case CB_FORMAT_DIB:
outbuf = xf_cliprdr_process_requested_dib(data, &size);
break;
case CB_FORMAT_HTML:
outbuf = xf_cliprdr_process_requested_html(data, &size);
break;
default:
outbuf = NULL;
break;
}
if (outbuf)
{
xf_cliprdr_send_data_response(xfi, outbuf, size);
}
else
{
xf_cliprdr_send_null_data_response(xfi);
}
/* Resend the format list, otherwise the server won't request again for the next paste */
xf_cliprdr_send_format_list(xfi);
}
static int xf_cliprdr_server_format_data_request(CliprdrClientContext* context, CLIPRDR_FORMAT_DATA_REQUEST* formatDataRequest)
{
xfCliprdrFormat* format = NULL;
UINT32 formatId = formatDataRequest->requestedFormatId;
xfClipboard* clipboard = (xfClipboard*) context->custom;
xfContext* xfc = clipboard->xfc;
if (xf_cliprdr_is_self_owned(clipboard))
{
format = xf_cliprdr_get_format_by_id(clipboard, 0);
XChangeProperty(xfc->display, xfc->drawable, clipboard->property_atom,
XA_INTEGER, 32, PropModeReplace, (BYTE*) &formatId, 1);
}
else
{
format = xf_cliprdr_get_format_by_id(clipboard, formatId);
}
if (!format)
{
xf_cliprdr_send_data_response(clipboard, NULL, 0);
return 1;
}
clipboard->requestedFormatId = formatId;
XConvertSelection(xfc->display, clipboard->clipboard_atom,
format->atom, clipboard->property_atom, xfc->drawable, CurrentTime);
XFlush(xfc->display);
/* After this point, we expect a SelectionNotify event from the clipboard owner. */
return 1;
}
static void xf_cliprdr_send_null_data_response(xfInfo* xfi)
{
xf_cliprdr_send_data_response(xfi, NULL, 0);
}
static BOOL xf_cliprdr_get_requested_data(xfClipboard* clipboard, Atom target)
{
Atom type;
BYTE* data = NULL;
BOOL has_data = FALSE;
int format_property;
unsigned long dummy;
unsigned long length;
unsigned long bytes_left;
xfCliprdrFormat* format;
xfContext* xfc = clipboard->xfc;
format = xf_cliprdr_get_format_by_id(clipboard, clipboard->requestedFormatId);
if (!format || (format->atom != target))
{
xf_cliprdr_send_data_response(clipboard, NULL, 0);
return FALSE;
}
XGetWindowProperty(xfc->display, xfc->drawable,
clipboard->property_atom, 0, 0, 0, target,
&type, &format_property, &length, &bytes_left, &data);
if (data)
{
XFree(data);
data = NULL;
}
if (bytes_left <= 0 && !clipboard->incr_starts)
{
}
else if (type == clipboard->incr_atom)
{
clipboard->incr_starts = TRUE;
if (clipboard->incr_data)
{
free(clipboard->incr_data);
clipboard->incr_data = NULL;
}
clipboard->incr_data_length = 0;
has_data = TRUE; /* data will be followed in PropertyNotify event */
}
else
{
if (bytes_left <= 0)
{
/* INCR finish */
data = clipboard->incr_data;
clipboard->incr_data = NULL;
bytes_left = clipboard->incr_data_length;
clipboard->incr_data_length = 0;
clipboard->incr_starts = 0;
has_data = TRUE;
}
else if (XGetWindowProperty(xfc->display, xfc->drawable,
clipboard->property_atom, 0, bytes_left, 0, target,
&type, &format_property, &length, &dummy, &data) == Success)
{
if (clipboard->incr_starts)
{
BYTE *new_data;
bytes_left = length * format_property / 8;
new_data = (BYTE*) realloc(clipboard->incr_data, clipboard->incr_data_length + bytes_left);
if (!new_data)
return FALSE;
clipboard->incr_data = new_data;
CopyMemory(clipboard->incr_data + clipboard->incr_data_length, data, bytes_left);
clipboard->incr_data_length += bytes_left;
XFree(data);
data = NULL;
}
has_data = TRUE;
}
else
{
}
}
XDeleteProperty(xfc->display, xfc->drawable, clipboard->property_atom);
xf_cliprdr_process_requested_data(clipboard, has_data, data, (int) bytes_left);
if (data)
XFree(data);
return TRUE;
}
static void xf_cliprdr_process_requested_data(xfClipboard* clipboard, BOOL hasData, BYTE* data, int size)
{
BOOL bSuccess;
UINT32 SrcSize;
UINT32 DstSize;
UINT32 formatId;
UINT32 altFormatId;
BYTE* pSrcData = NULL;
BYTE* pDstData = NULL;
xfCliprdrFormat* format;
if (clipboard->incr_starts && hasData)
return;
format = xf_cliprdr_get_format_by_id(clipboard, clipboard->requestedFormatId);
if (!hasData || !data || !format)
{
xf_cliprdr_send_data_response(clipboard, NULL, 0);
return;
}
formatId = 0;
altFormatId = 0;
switch (format->formatId)
{
case CF_TEXT:
case CF_OEMTEXT:
case CF_UNICODETEXT:
size = strlen((char*) data) + 1;
formatId = ClipboardGetFormatId(clipboard->system, "UTF8_STRING");
break;
case CF_DIB:
formatId = ClipboardGetFormatId(clipboard->system, "image/bmp");
break;
case CB_FORMAT_HTML:
size = strlen((char*) data) + 1;
formatId = ClipboardGetFormatId(clipboard->system, "text/html");
break;
}
SrcSize = (UINT32) size;
pSrcData = (BYTE*) malloc(SrcSize);
if (!pSrcData)
return;
CopyMemory(pSrcData, data, SrcSize);
bSuccess = ClipboardSetData(clipboard->system, formatId, (void*) pSrcData, SrcSize);
if (!bSuccess)
free(pSrcData);
altFormatId = clipboard->requestedFormatId;
if (bSuccess && altFormatId)
{
DstSize = 0;
pDstData = (BYTE*) ClipboardGetData(clipboard->system, altFormatId, &DstSize);
}
if (!pDstData)
{
xf_cliprdr_send_data_response(clipboard, NULL, 0);
return;
}
xf_cliprdr_send_data_response(clipboard, pDstData, (int) DstSize);
free(pDstData);
}
static void xf_cliprdr_process_requested_data(xfClipboard* clipboard,
BOOL hasData, BYTE* data, int size)
{
BOOL bSuccess;
UINT32 SrcSize;
UINT32 DstSize;
UINT32 srcFormatId;
UINT32 dstFormatId;
BYTE* pDstData = NULL;
xfCliprdrFormat* format;
if (clipboard->incr_starts && hasData)
return;
format = xf_cliprdr_get_client_format_by_id(clipboard,
clipboard->requestedFormatId);
if (!hasData || !data || !format)
{
xf_cliprdr_send_data_response(clipboard, NULL, 0);
return;
}
srcFormatId = 0;
switch (format->formatId)
{
case CF_RAW:
srcFormatId = CF_RAW;
break;
case CF_TEXT:
case CF_OEMTEXT:
case CF_UNICODETEXT:
size = strlen((char*) data) + 1;
srcFormatId = ClipboardGetFormatId(clipboard->system, "UTF8_STRING");
break;
case CF_DIB:
srcFormatId = ClipboardGetFormatId(clipboard->system, "image/bmp");
break;
case CB_FORMAT_HTML:
srcFormatId = ClipboardGetFormatId(clipboard->system, "text/html");
break;
case CB_FORMAT_TEXTURILIST:
srcFormatId = ClipboardGetFormatId(clipboard->system, "text/uri-list");
break;
}
SrcSize = (UINT32) size;
bSuccess = ClipboardSetData(clipboard->system, srcFormatId, data, SrcSize);
if (format->formatName)
dstFormatId = ClipboardGetFormatId(clipboard->system, format->formatName);
else
dstFormatId = format->formatId;
if (bSuccess)
{
DstSize = 0;
pDstData = (BYTE*) ClipboardGetData(clipboard->system, dstFormatId, &DstSize);
}
if (!pDstData)
{
xf_cliprdr_send_data_response(clipboard, NULL, 0);
return;
}
/*
* File lists require a bit of postprocessing to convert them from WinPR's FILDESCRIPTOR
* format to CLIPRDR_FILELIST expected by the server.
*
* We check for "FileGroupDescriptorW" format being registered (i.e., nonzero) in order
* to not process CF_RAW as a file list in case WinPR does not support file transfers.
*/
if (dstFormatId &&
(dstFormatId == ClipboardGetFormatId(clipboard->system, "FileGroupDescriptorW")))
{
UINT error = NO_ERROR;
FILEDESCRIPTOR* file_array = (FILEDESCRIPTOR*) pDstData;
UINT32 file_count = DstSize / sizeof(FILEDESCRIPTOR);
pDstData = NULL;
DstSize = 0;
error = cliprdr_serialize_file_list(file_array, file_count, &pDstData, &DstSize);
if (error)
WLog_ERR(TAG, "failed to serialize CLIPRDR_FILELIST: 0x%08X", error);
free(file_array);
}
xf_cliprdr_send_data_response(clipboard, pDstData, (int) DstSize);
free(pDstData);
}