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Move AntiDebug to xivfixes (#2264)

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* Move AntiDebug to xivfixes

* Update BootEnabledGameFixes

* Check BootEnabledGameFixes

* Apply suggestions from code review

Co-authored-by: KazWolfe <KazWolfe@users.noreply.github.com>

---------

Co-authored-by: KazWolfe <KazWolfe@users.noreply.github.com>
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Haselnussbomber 2025-05-09 22:53:44 +02:00 • committed by GitHub
parent 4dce0c00e8
commit 33605e3ace
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6 changed files with 45 additions and 121 deletions
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102
Dalamud/Game/Internal/AntiDebug.cs
View file

@ -1,102 +0,0 @@
using System.Collections.Generic;
using Dalamud.Utility;
#if !DEBUG
using Dalamud.Configuration.Internal;
#endif
using Serilog;
namespace Dalamud.Game.Internal;
/// <summary>
/// This class disables anti-debug functionality in the game client.
/// </summary>
[ServiceManager.EarlyLoadedService]
internal sealed class AntiDebug : IInternalDisposableService
{
private readonly byte[] nop = [0x31, 0xC0, 0x90, 0x90, 0x90, 0x90];
private byte[]? original;
private IntPtr debugCheckAddress;
[ServiceManager.ServiceConstructor]
private AntiDebug(TargetSigScanner sigScanner)
{
try
{
// This sig has to be the call site in Framework_Tick
this.debugCheckAddress = sigScanner.ScanText("FF 15 ?? ?? ?? ?? 85 C0 74 13 41");
}
catch (KeyNotFoundException)
{
this.debugCheckAddress = IntPtr.Zero;
}
Log.Verbose($"Debug check address {Util.DescribeAddress(this.debugCheckAddress)}");
if (!this.IsEnabled)
{
#if DEBUG
this.Enable();
#else
if (Service<DalamudConfiguration>.Get().IsAntiAntiDebugEnabled)
this.Enable();
#endif
}
}
/// <summary>Finalizes an instance of the <see cref="AntiDebug"/> class.</summary>
~AntiDebug() => ((IInternalDisposableService)this).DisposeService();
/// <summary>
/// Gets a value indicating whether the anti-debugging is enabled.
/// </summary>
public bool IsEnabled { get; private set; } = false;
/// <inheritdoc />
void IInternalDisposableService.DisposeService() => this.Disable();
/// <summary>
/// Enables the anti-debugging by overwriting code in memory.
/// </summary>
public void Enable()
{
if (this.IsEnabled)
return;
this.original = new byte[this.nop.Length];
if (this.debugCheckAddress != IntPtr.Zero && !this.IsEnabled)
{
Log.Information($"Overwriting debug check at {Util.DescribeAddress(this.debugCheckAddress)}");
SafeMemory.ReadBytes(this.debugCheckAddress, this.nop.Length, out this.original);
SafeMemory.WriteBytes(this.debugCheckAddress, this.nop);
}
else
{
Log.Information("Debug check already overwritten?");
}
this.IsEnabled = true;
}
/// <summary>
/// Disable the anti-debugging by reverting the overwritten code in memory.
/// </summary>
public void Disable()
{
if (!this.IsEnabled)
return;
if (this.debugCheckAddress != IntPtr.Zero && this.original != null)
{
Log.Information($"Reverting debug check at {Util.DescribeAddress(this.debugCheckAddress)}");
SafeMemory.WriteBytes(this.debugCheckAddress, this.original);
}
else
{
Log.Information("Debug check was not overwritten?");
}
this.IsEnabled = false;
}
}