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clipboard: fix a bug when pasting image to LibreOffice 

While here, embed correct file size in BMP file header.

Fixes:          #3102
Sponsored by:   Krämer Pferdesport GmbH & Co KG

(cherry picked from commit 4968a34cd6)
This commit is contained in:
Koichiro Iwao 2024-06-17 20:18:17 +09:00
parent 8ee4a6cb6f
commit 57cf5c19b7
No known key found for this signature in database
GPG Key ID: 03993B4065E7193B
1 changed files with 34 additions and 9 deletions
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43
sesman/chansrv/clipboard.c
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@ -183,13 +183,21 @@ x-special/gnome-copied-files
static char g_bmp_image_header[] =
{
/* this is known to work */
//0x42, 0x4d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
/* THIS IS BEING SENT BY WIN2008 */
0x42, 0x4d, 0x16, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x00
/*
* Bitmap file header
* https://en.wikipedia.org/wiki/BMP_file_format#Bitmap_file_header
*
* NOTE: All of the integer values are stored in little-endian format
*/
0x42, 0x4d, /* signature */
0x00, 0x00, 0x00, 0x00, /* file size, to be filled later */
0x00, 0x00, /* reserved 1 */
0x00, 0x00, /* reserved 2 */
0x36, 0x00, 0x00, 0x00 /* offset to pixel array (14 + 40 bytes) */
};
#define BMPFILEHEADER_LEN sizeof(g_bmp_image_header)
extern int g_cliprdr_chan_id; /* in chansrv.c */
extern Display *g_display; /* in xcommon.c */
@ -1135,6 +1143,8 @@ clipboard_process_data_response_for_image(struct stream *s,
{
XSelectionRequestEvent *lxev;
int len;
char bmp_file_header[BMPFILEHEADER_LEN] = { 0 };
uint32_t bmp_size; /* file size stored in bmp file header */
LOG_DEVEL(LOG_LEVEL_DEBUG, "clipboard_process_data_response_for_image: "
"CLIPRDR_DATA_RESPONSE_FOR_IMAGE");
@ -1148,20 +1158,35 @@ clipboard_process_data_response_for_image(struct stream *s,
{
return 0;
}
g_free(g_clip_c2s.data);
g_clip_c2s.data = (char *) g_malloc(len + 14, 0);
g_clip_c2s.data = (char *) g_malloc(len + BMPFILEHEADER_LEN, 0);
if (g_clip_c2s.data == 0)
{
g_clip_c2s.total_bytes = 0;
return 0;
}
g_clip_c2s.total_bytes = len;
g_clip_c2s.total_bytes = len + BMPFILEHEADER_LEN;
g_clip_c2s.read_bytes_done = g_clip_c2s.total_bytes;
g_memcpy(g_clip_c2s.data, g_bmp_image_header, 14);
in_uint8a(s, g_clip_c2s.data + 14, len);
/* assemble bmp header */
g_memcpy(bmp_file_header, g_bmp_image_header, BMPFILEHEADER_LEN);
bmp_size = (uint32_t) g_clip_c2s.total_bytes;
#if defined(L_ENDIAN)
for (int i = 2, j = 0; i < 6; i++, j += 8)
#else
for (int i = 5, j = 0; i >= 2; i--, j += 8)
#endif
{
bmp_file_header[i] = ((bmp_size >> j) & 0xff);
}
g_memcpy(g_clip_c2s.data, bmp_file_header, BMPFILEHEADER_LEN);
in_uint8a(s, g_clip_c2s.data + BMPFILEHEADER_LEN, len);
LOG_DEVEL(LOG_LEVEL_DEBUG, "clipboard_process_data_response_for_image: calling "
"clipboard_provide_selection_c2s");
clipboard_provide_selection_c2s(lxev, lxev->target);
return 0;
}