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Add iso-level ripguard detection. (#412)

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HeroponRikiBestest
2026-03-07 15:19:00 -05:00
committed by GitHub
parent 9be63e9e9a
commit 245e840063
1 changed files with 23 additions and 4 deletions
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27
BinaryObjectScanner/Protection/Macrovision.cs
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@@ -28,6 +28,26 @@ namespace BinaryObjectScanner.Protection
if (diskImage.VolumeDescriptorSet[0] is not PrimaryVolumeDescriptor pvd)
return null;
var applicationUse = pvd.ApplicationUse;
var reserved653Bytes = pvd.Reserved653Bytes;
#region RipGuard
// Macrovision RipGuard protected DVDs have the string "MVSNRGFP" at the start of the application use, followed
// by some other data. The meaning of the rest of the data is unknown, but ultimately not necessary to check.
// Meaning of string unknown. Best guess is "Macrovision RipGuard (File?) Protection"
// While not checked, this string plus a similar-looking block of data appear near the very end of the image
// as well. Possibly part of another standard ISO9660 field?
byte[] ripGuardBytes = [0x4D, 0x56, 0x53, 0x4E, 0x52, 0x47, 0x46, 0x50]; // MVSNRGFP
int offset = 0;
var compareBytes = applicationUse.ReadBytes(ref offset, 8);
if (compareBytes.EqualsExactly(ripGuardBytes))
return "Macrovision RipGuard";
#endregion RipGuard
#region SafeDisc
if (!FileType.ISO9660.NoteworthyApplicationUse(pvd))
return null;
@@ -37,12 +57,9 @@ namespace BinaryObjectScanner.Protection
if (!FileType.ISO9660.NoteworthyReserved653Bytes(pvd))
return null;
var applicationUse = pvd.ApplicationUse;
var reserved653Bytes = pvd.Reserved653Bytes;
#region Read Application Use
int offset = 0;
offset = 0;
var appUseZeroBytes = applicationUse.ReadBytes(ref offset, 256);
var appUseDataBytesOne = applicationUse.ReadBytes(ref offset, 128);
offset += 64; // Some extra values get added here over time. Check is good enough, easier to skip this.
@@ -84,6 +101,8 @@ namespace BinaryObjectScanner.Protection
return null;
return "SafeDisc";
#endregion
}
/// <inheritdoc/>