mirror of https://github.com/neutrinolabs/xrdp
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
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4968a34cd6
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@ -183,13 +183,21 @@ x-special/gnome-copied-files
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static char g_bmp_image_header[] =
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{
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/* this is known to work */
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//0x42, 0x4d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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/* THIS IS BEING SENT BY WIN2008 */
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0x42, 0x4d, 0x16, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x00
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/*
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* Bitmap file header
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* https://en.wikipedia.org/wiki/BMP_file_format#Bitmap_file_header
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*
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* NOTE: All of the integer values are stored in little-endian format
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*/
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0x42, 0x4d, /* signature */
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0x00, 0x00, 0x00, 0x00, /* file size, to be filled later */
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0x00, 0x00, /* reserved 1 */
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0x00, 0x00, /* reserved 2 */
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0x36, 0x00, 0x00, 0x00 /* offset to pixel array (14 + 40 bytes) */
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};
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#define BMPFILEHEADER_LEN sizeof(g_bmp_image_header)
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extern int g_cliprdr_chan_id; /* in chansrv.c */
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extern Display *g_display; /* in xcommon.c */
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@ -1135,6 +1143,8 @@ clipboard_process_data_response_for_image(struct stream *s,
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{
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XSelectionRequestEvent *lxev;
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int len;
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char bmp_file_header[BMPFILEHEADER_LEN] = { 0 };
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uint32_t bmp_size; /* file size stored in bmp file header */
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LOG_DEVEL(LOG_LEVEL_DEBUG, "clipboard_process_data_response_for_image: "
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"CLIPRDR_DATA_RESPONSE_FOR_IMAGE");
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@ -1148,20 +1158,35 @@ clipboard_process_data_response_for_image(struct stream *s,
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{
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return 0;
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}
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g_free(g_clip_c2s.data);
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g_clip_c2s.data = (char *) g_malloc(len + 14, 0);
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g_clip_c2s.data = (char *) g_malloc(len + BMPFILEHEADER_LEN, 0);
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if (g_clip_c2s.data == 0)
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{
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g_clip_c2s.total_bytes = 0;
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return 0;
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}
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g_clip_c2s.total_bytes = len;
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g_clip_c2s.total_bytes = len + BMPFILEHEADER_LEN;
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g_clip_c2s.read_bytes_done = g_clip_c2s.total_bytes;
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g_memcpy(g_clip_c2s.data, g_bmp_image_header, 14);
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in_uint8a(s, g_clip_c2s.data + 14, len);
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/* assemble bmp header */
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g_memcpy(bmp_file_header, g_bmp_image_header, BMPFILEHEADER_LEN);
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bmp_size = (uint32_t) g_clip_c2s.total_bytes;
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#if defined(L_ENDIAN)
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for (int i = 2, j = 0; i < 6; i++, j += 8)
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#else
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for (int i = 5, j = 0; i >= 2; i--, j += 8)
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#endif
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{
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bmp_file_header[i] = ((bmp_size >> j) & 0xff);
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}
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g_memcpy(g_clip_c2s.data, bmp_file_header, BMPFILEHEADER_LEN);
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in_uint8a(s, g_clip_c2s.data + BMPFILEHEADER_LEN, len);
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LOG_DEVEL(LOG_LEVEL_DEBUG, "clipboard_process_data_response_for_image: calling "
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"clipboard_provide_selection_c2s");
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clipboard_provide_selection_c2s(lxev, lxev->target);
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return 0;
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}
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