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Added lump size validation to the WAD loader
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1 changed files with 11 additions and 0 deletions
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@ -188,6 +188,17 @@ bool FWadFile::Open(bool quiet)
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Lumps[i].Namespace = ns_global;
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Lumps[i].Flags = Lumps[i].Compressed? LUMPF_COMPRESSED : 0;
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Lumps[i].FullName = NULL;
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// Check if the lump is within the WAD file and print a warning if not.
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if (Lumps[i].Position + Lumps[i].LumpSize > wadSize || Lumps[i].Position < 0 || Lumps[i].LumpSize < 0)
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{
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if (Lumps[i].LumpSize != 0)
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{
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Printf(PRINT_HIGH, "%s: Lump %s contains invalid positioning info and will be ignored\n", Filename, Lumps[i].Name);
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Lumps[i].Name[0] = 0;
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}
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Lumps[i].LumpSize = Lumps[i].Position = 0;
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}
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}
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delete[] fileinfo;
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