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more strict check on blocksizes in the header

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6426 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
shatty
2004-01-30 06:43:47 +00:00
parent a3acf1f210
commit 8db90088c9
1 changed files with 8 additions and 2 deletions
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src/add-ons/media/plugins/ogg/OggVorbisStream.cpp
+8 -2
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@@ -59,14 +59,20 @@ static int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb){
vi->bitrate_upper = oggpack_read(opb, 32);
vi->bitrate_nominal = oggpack_read(opb, 32);
vi->bitrate_lower = oggpack_read(opb, 32);
oggpack_read(opb, 4); // discard blocksizes 0
oggpack_read(opb, 4); // discard blocksizes 1
long blocksizes0 = oggpack_read(opb, 4);
long blocksizes1 = oggpack_read(opb, 4);
if (vi->rate < 1) {
return -1;
}
if (vi->channels < 1) {
return -1;
}
if (blocksizes0 < 8) {
return -1;
}
if (blocksizes1 < blocksizes0) {
return -1;
}
if (oggpack_read(opb, 1) != 1) {
return -1;
} /* EOP check */