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matroska-demux: Make sure that subtitle buffers are \0-terminated

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=707933
This commit is contained in:
Sebastian Dröge 2013-09-20 10:19:22 +02:00
parent cfefdaebb6
commit d8841b4832
1 changed files with 17 additions and 0 deletions
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17
gst/matroska/matroska-demux.c
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@ -3060,6 +3060,23 @@ gst_matroska_demux_check_subtitle_buffer (GstElement * element,
gst_buffer_map (*buf, &map, GST_MAP_READ);
next:
/* Need \0-terminator at the end */
if (map.data[map.size - 1] != '\0') {
newbuf = gst_buffer_new_and_alloc (map.size + 1);
/* Copy old buffer and add a 0 at the end */
gst_buffer_fill (newbuf, 0, map.data, map.size);
gst_buffer_memset (newbuf, map.size, 0, 1);
gst_buffer_unmap (*buf, &map);
gst_buffer_copy_into (newbuf, *buf,
GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS |
GST_BUFFER_COPY_META, 0, -1);
gst_buffer_unref (*buf);
*buf = newbuf;
gst_buffer_map (*buf, &map, GST_MAP_READ);
}
if (sub_stream->check_markup) {
/* caps claim markup text, so we need to escape text,
* except if text is already markup and then needs no further escaping */