SabreTools/BinaryObjectScanner
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Use SabreTools.Hashing

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This commit is contained in:
Matt Nadareski
2024-03-04 21:27:36 -05:00
parent 3f52c24713
commit 1d3bd2f8b1
4 changed files with 9 additions and 61 deletions
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1
BinaryObjectScanner/BinaryObjectScanner.csproj
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@@ -84,6 +84,7 @@
<ItemGroup>
<PackageReference Include="SabreTools.Compression" Version="0.3.0" />
<PackageReference Include="SabreTools.Hashing" Version="1.1.2" />
<PackageReference Include="SabreTools.IO" Version="1.3.0" />
<PackageReference Include="SabreTools.Matching" Version="1.3.0" />
<PackageReference Include="SabreTools.Models" Version="1.3.0" />

4
BinaryObjectScanner/Protection/Macrovision.RipGuard.cs
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@@ -4,9 +4,9 @@ using System.Collections.Concurrent;
#endif
using System.Collections.Generic;
using System.IO;
using SabreTools.Hashing;
using SabreTools.Matching;
using SabreTools.Serialization.Wrappers;
using static BinaryObjectScanner.Utilities.Hashing;
namespace BinaryObjectScanner.Protection
{
@@ -47,7 +47,7 @@ namespace BinaryObjectScanner.Protection
// So far, every seemingly-randomly named EXE on RipGuard discs have a consistent hash.
if (fi.Length == 49_152)
{
var sha1 = GetFileSHA1(file);
var sha1 = HashTool.GetFileHash(file, HashType.SHA1);
if (sha1 == "6A7B8545800E0AB252773A8CD0A2185CA2497938")
return "RipGuard";
}

12
BinaryObjectScanner/Protection/Macrovision.SafeDisc.cs
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@@ -5,9 +5,9 @@ using System.Collections.Concurrent;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using SabreTools.Hashing;
using SabreTools.Matching;
using SabreTools.Serialization.Wrappers;
using static BinaryObjectScanner.Utilities.Hashing;
namespace BinaryObjectScanner.Protection
{
@@ -363,7 +363,7 @@ namespace BinaryObjectScanner.Protection
return string.Empty;
// The hash of the file CLCD16.dll is able to provide a broad version range that appears to be consistent, but it seems it was rarely updated so these checks are quite broad.
var sha1 = GetFileSHA1(firstMatchedString);
var sha1 = HashTool.GetFileHash(firstMatchedString, HashType.SHA1);
return sha1 switch
{
// Found in Redump entries 61731 and 66005.
@@ -386,7 +386,7 @@ namespace BinaryObjectScanner.Protection
return string.Empty;
// The hash of the file CLCD32.dll so far appears to be a solid indicator of version for versions it was used with. It appears to have been updated with every release, unlike its counterpart, CLCD16.dll.
var sha1 = GetFileSHA1(firstMatchedString);
var sha1 = HashTool.GetFileHash(firstMatchedString, HashType.SHA1);
return sha1 switch
{
// Found in Redump entry 66005.
@@ -485,7 +485,7 @@ namespace BinaryObjectScanner.Protection
// The hash of every "CLOKSPL.EXE" correlates directly to a specific SafeDisc version.
var sha1 = GetFileSHA1(firstMatchedString);
var sha1 = HashTool.GetFileHash(firstMatchedString, HashType.SHA1);
return sha1 switch
{
// Found in Redump entry 66005.
@@ -632,7 +632,7 @@ namespace BinaryObjectScanner.Protection
// There are occasionaly inconsistencies, even within the well detected version range. This seems to me to mostly happen with later (3.20+) games, and seems to me to be an example of the SafeDisc distribution becoming more disorganized with time.
// Particularly interesting inconsistencies will be noted below:
// Redump entry 73786 has an EXE with a scrubbed version, a DIAG.exe with a version of 4.60.000, and a copy of drvmgt.dll belonging to version 3.10.020. This seems like an accidental(?) distribution of older drivers, as this game was released 3 years after the use of 3.10.020.
var sha1 = GetFileSHA1(firstMatchedString);
var sha1 = HashTool.GetFileHash(firstMatchedString, HashType.SHA1);
return sha1 switch
{
// Found in Redump entry 102979.
@@ -780,7 +780,7 @@ namespace BinaryObjectScanner.Protection
if (string.IsNullOrEmpty(firstMatchedString) || !File.Exists(firstMatchedString))
return string.Empty;
var sha1 = GetFileSHA1(firstMatchedString);
var sha1 = HashTool.GetFileHash(firstMatchedString, HashType.SHA1);
switch (sha1)
{
// Found in Redump entry 63488.

53
BinaryObjectScanner/Utilities/Hashing.cs
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@@ -1,53 +0,0 @@
using System;
using System.IO;
using System.Security.Cryptography;
namespace BinaryObjectScanner.Utilities
{
/// <summary>
/// Data hashing methods
/// </summary>
public static class Hashing
{
/// <summary>
/// Get the SHA1 hash of a file, if possible
/// </summary>
/// <param name="path">Path to the file to be hashed</param>
/// <returns>SHA1 hash as a string on success, null on error</returns>
public static string? GetFileSHA1(string? path)
{
if (string.IsNullOrEmpty(path))
return null;
try
{
var sha1 = SHA1.Create();
using (Stream fileStream = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
byte[] buffer = new byte[32768];
while (true)
{
int bytesRead = fileStream.Read(buffer, 0, 32768);
if (bytesRead == 32768)
{
sha1.TransformBlock(buffer, 0, bytesRead, null, 0);
}
else
{
sha1.TransformFinalBlock(buffer, 0, bytesRead);
break;
}
}
}
string hash = BitConverter.ToString(sha1.Hash!);
hash = hash.Replace("-", string.Empty);
return hash;
}
catch
{
return null;
}
}
}
}