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Merge pull request #6609 from akallabeth/clip_response

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Fixed sending of clipboard format request response
This commit is contained in:
Martin Fleisz 2021-02-05 10:18:08 +01:00 committed by GitHub
commit 784f445aa1
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 109 additions and 23 deletions
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132
client/X11/xf_cliprdr.c
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@ -172,6 +172,9 @@ struct xf_clipboard
BOOL streams_supported;
BOOL file_formats_registered;
UINT32 file_capability_flags;
/* last sent data */
CLIPRDR_FORMAT* lastSentFormats;
UINT32 lastSentNumFormats;
#ifdef WITH_FUSE
/* FUSE related**/
HANDLE fuse_thread;
@ -343,9 +346,17 @@ static UINT xf_cliprdr_send_data_request(xfClipboard* clipboard, UINT32 formatId
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT xf_cliprdr_send_data_response(xfClipboard* clipboard, BYTE* data, int size)
static UINT xf_cliprdr_send_data_response(xfClipboard* clipboard, const BYTE* data, size_t size)
{
CLIPRDR_FORMAT_DATA_RESPONSE response = { 0 };
/* No request currently pending, do not send a response. */
if (clipboard->requestedFormatId < 0)
return CHANNEL_RC_OK;
/* Request handled, reset to invalid */
clipboard->requestedFormatId = -1;
response.msgFlags = (data) ? CB_RESPONSE_OK : CB_RESPONSE_FAIL;
response.dataLen = size;
response.requestedFormatData = data;
@ -599,17 +610,92 @@ static void xf_cliprdr_provide_server_format_list(xfClipboard* clipboard)
Stream_Free(formats, TRUE);
}
static BOOL xf_clipboard_format_equal(const CLIPRDR_FORMAT* a, const CLIPRDR_FORMAT* b)
{
if (a->formatId != b->formatId)
return FALSE;
if (!a->formatName && !b->formatName)
return TRUE;
return strcmp(a->formatName, b->formatName) == 0;
}
static BOOL xf_clipboard_changed(xfClipboard* clipboard, const CLIPRDR_FORMAT* formats,
UINT32 numFormats)
{
UINT32 x, y;
if (clipboard->lastSentNumFormats != numFormats)
return TRUE;
for (x = 0; x < numFormats; x++)
{
const CLIPRDR_FORMAT* cur = &clipboard->lastSentFormats[x];
BOOL contained = FALSE;
for (y = 0; y < numFormats; y++)
{
if (xf_clipboard_format_equal(cur, &formats[y]))
{
contained = TRUE;
break;
}
}
if (!contained)
return TRUE;
}
return FALSE;
}
static void xf_clipboard_formats_free(xfClipboard* clipboard)
{
xf_cliprdr_free_formats(clipboard->lastSentFormats, clipboard->lastSentNumFormats);
clipboard->lastSentFormats = NULL;
clipboard->lastSentNumFormats = 0;
}
static BOOL xf_clipboard_copy_formats(xfClipboard* clipboard, const CLIPRDR_FORMAT* formats,
UINT32 numFormats)
{
UINT32 x;
xf_clipboard_formats_free(clipboard);
clipboard->lastSentFormats = calloc(numFormats, sizeof(CLIPRDR_FORMAT));
if (!clipboard->lastSentFormats)
return FALSE;
clipboard->lastSentNumFormats = numFormats;
for (x = 0; x < numFormats; x++)
{
CLIPRDR_FORMAT* lcur = &clipboard->lastSentFormats[x];
const CLIPRDR_FORMAT* cur = &formats[x];
*lcur = *cur;
if (cur->formatName)
lcur->formatName = _strdup(cur->formatName);
}
return FALSE;
}
static UINT xf_cliprdr_send_format_list(xfClipboard* clipboard, const CLIPRDR_FORMAT* formats,
UINT32 numFormats)
{
CLIPRDR_FORMAT_LIST formatList = { 0 };
formatList.msgFlags = CB_RESPONSE_OK;
formatList.numFormats = numFormats;
formatList.formats = (CLIPRDR_FORMAT*)formats;
formatList.msgType = CB_FORMAT_LIST;
if (!xf_clipboard_changed(clipboard, formats, numFormats))
return CHANNEL_RC_OK;
xf_clipboard_copy_formats(clipboard, formats, numFormats);
/* Ensure all pending requests are answered. */
xf_cliprdr_send_data_response(clipboard, NULL, 0);
return clipboard->context->ClientFormatList(clipboard->context, &formatList);
}
static void xf_cliprdr_get_requested_targets(xfClipboard* clipboard)
{
UINT32 numFormats = 0;
CLIPRDR_FORMAT* formats = NULL;
CLIPRDR_FORMAT_LIST formatList = { 0 };
formats = xf_cliprdr_get_client_formats(clipboard, &numFormats);
formatList.msgFlags = CB_RESPONSE_OK;
formatList.numFormats = numFormats;
formatList.formats = formats;
formatList.msgType = CB_FORMAT_LIST;
clipboard->context->ClientFormatList(clipboard->context, &formatList);
xf_cliprdr_send_format_list(clipboard, formats, numFormats);
xf_cliprdr_free_formats(formats, numFormats);
}
@ -707,7 +793,7 @@ static void xf_cliprdr_process_requested_data(xfClipboard* clipboard, BOOL hasDa
free(file_array);
}
xf_cliprdr_send_data_response(clipboard, pDstData, (int)DstSize);
xf_cliprdr_send_data_response(clipboard, pDstData, DstSize);
free(pDstData);
}
@ -722,6 +808,7 @@ static BOOL xf_cliprdr_get_requested_data(xfClipboard* clipboard, Atom target)
unsigned long bytes_left;
xfCliprdrFormat* format;
xfContext* xfc = clipboard->xfc;
format = xf_cliprdr_get_client_format_by_id(clipboard, clipboard->requestedFormatId);
if (!format || (format->atom != target))
@ -778,14 +865,16 @@ static BOOL xf_cliprdr_get_requested_data(xfClipboard* clipboard, Atom target)
new_data =
(BYTE*)realloc(clipboard->incr_data, clipboard->incr_data_length + bytes_left);
if (!new_data)
return FALSE;
if (new_data)
{
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;
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;
@ -796,7 +885,7 @@ static BOOL xf_cliprdr_get_requested_data(xfClipboard* clipboard, Atom target)
}
XDeleteProperty(xfc->display, xfc->drawable, clipboard->property_atom);
xf_cliprdr_process_requested_data(clipboard, has_data, data, (int)bytes_left);
xf_cliprdr_process_requested_data(clipboard, has_data, data, bytes_left);
if (data)
XFree(data);
@ -1204,7 +1293,6 @@ static UINT xf_cliprdr_send_client_format_list(xfClipboard* clipboard)
{
UINT32 i, numFormats;
CLIPRDR_FORMAT* formats = NULL;
CLIPRDR_FORMAT_LIST formatList = { 0 };
xfContext* xfc = clipboard->xfc;
UINT ret;
numFormats = clipboard->numClientFormats;
@ -1224,11 +1312,7 @@ static UINT xf_cliprdr_send_client_format_list(xfClipboard* clipboard)
formats[i].formatName = clipboard->clientFormats[i].formatName;
}
formatList.msgFlags = CB_RESPONSE_OK;
formatList.numFormats = numFormats;
formatList.formats = formats;
formatList.msgType = CB_FORMAT_LIST;
ret = clipboard->context->ClientFormatList(clipboard->context, &formatList);
ret = xf_cliprdr_send_format_list(clipboard, formats, numFormats);
free(formats);
if (clipboard->owner && clipboard->owner != xfc->drawable)
@ -1501,6 +1585,7 @@ static UINT xf_cliprdr_server_format_list(CliprdrClientContext* context,
xfClipboard* clipboard = (xfClipboard*)context->custom;
xfContext* xfc = clipboard->xfc;
UINT ret;
xf_clipboard_formats_free(clipboard);
xf_cliprdr_clear_cached_data(clipboard);
clipboard->data_format_id = -1;
clipboard->data_format_name = NULL;
@ -1613,10 +1698,10 @@ xf_cliprdr_server_format_data_request(CliprdrClientContext* context,
else
format = xf_cliprdr_get_client_format_by_id(clipboard, formatId);
clipboard->requestedFormatId = rawTransfer ? CF_RAW : 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);
@ -2914,6 +2999,7 @@ void xf_clipboard_free(xfClipboard* clipboard)
#endif
ClipboardDestroy(clipboard->system);
xf_clipboard_formats_free(clipboard);
free(clipboard->data);
free(clipboard->data_raw);
free(clipboard->respond);