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MD3: Check file is big enough to contain all the advertised surfaces

pull/820/head
Turo Lamminen 2016-03-13 00:54:23 +02:00
parent da0b180901
commit 555f533777
1 changed files with 8 additions and 0 deletions
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8
code/MD3Loader.cpp
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@ -407,6 +407,14 @@ void MD3Importer::ValidateHeaderOffsets()
throw DeadlyImportError("Invalid MD3 header: some offsets are outside the file"); throw DeadlyImportError("Invalid MD3 header: some offsets are outside the file");
} }
if (pcHeader->NUM_SURFACES > AI_MAX_ALLOC(MD3::Surface)) {
throw DeadlyImportError("Invalid MD3 header: too many surfaces, would overflow");
}
if (pcHeader->OFS_SURFACES + pcHeader->NUM_SURFACES * sizeof(MD3::Surface) >= fileSize) {
throw DeadlyImportError("Invalid MD3 header: some surfaces are outside the file");
}
if (pcHeader->NUM_FRAMES <= configFrameID ) if (pcHeader->NUM_FRAMES <= configFrameID )
throw DeadlyImportError("The requested frame is not existing the file"); throw DeadlyImportError("The requested frame is not existing the file");
} }