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check forw_ptr CRC

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Originally committed as revision 10017 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-08-09 12:51:08 +00:00
parent 6c666941eb
commit 47772399ec
1 changed files with 4 additions and 1 deletions
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5
libavformat/nutdec.c
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@ -103,9 +103,12 @@ static int get_packetheader(NUTContext *nut, ByteIOContext *bc, int calculate_ch
int64_t size;
// start= url_ftell(bc) - 8;
init_checksum(bc, av_crc04C11DB7_update, 0);
size= get_v(bc);
if(size > 4096)
get_be32(bc); //FIXME check this
get_be32(bc);
if(get_checksum(bc) && size > 4096)
return -1;
init_checksum(bc, calculate_checksum ? av_crc04C11DB7_update : NULL, 0);