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| author | Reimar Döffinger <Reimar.Doeffinger@gmx.de> | 2009-07-03 11:26:14 +0000 |
|---|---|---|
| committer | Reimar Döffinger <Reimar.Doeffinger@gmx.de> | 2009-07-03 11:26:14 +0000 |
| commit | 5a4a4d78396d4195e14fbc4ba6bb3f996edecdf6 (patch) | |
| tree | 2c894a35aabeca25f56468b084623fea0441de06 /libavformat | |
| parent | b098b3090573172cbf1e2e798a66804fbcf2674d (diff) | |
| download | ffmpeg-5a4a4d78396d4195e14fbc4ba6bb3f996edecdf6.tar.gz | |
Check size of "strf" header against size of enclosing "LIST" if there is one.
Originally committed as revision 19332 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/avidec.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavformat/avidec.c b/libavformat/avidec.c index b3c4177d01..5b7c8bb059 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -252,6 +252,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) AVIStream *ast = NULL; int avih_width=0, avih_height=0; int amv_file_format=0; + uint64_t list_end = 0; avi->stream_index= -1; @@ -277,6 +278,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) switch(tag) { case MKTAG('L', 'I', 'S', 'T'): + list_end = url_ftell(pb) + size; /* Ignored, except at start of video packets. */ tag1 = get_le32(pb); #ifdef DEBUG @@ -445,6 +447,9 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) if (stream_index >= (unsigned)s->nb_streams || avi->dv_demux) { url_fskip(pb, size); } else { + uint64_t cur_pos = url_ftell(pb); + if (cur_pos < list_end) + size = FFMIN(size, list_end - cur_pos); st = s->streams[stream_index]; switch(codec_type) { case CODEC_TYPE_VIDEO: |