Add Byte String stuff, remove Services, cleanup and refactor interop stuff, disable path resolver for the moment

Penumbra/Interop/CharacterUtility.cs

@@ -0,0 +1,75 @@
+using System;
+using Dalamud.Hooking;
+using Dalamud.Logging;
+using Dalamud.Utility.Signatures;
+
+namespace Penumbra.Interop;
+
+public unsafe class CharacterUtility : IDisposable
+{
+    // A static pointer to the CharacterUtility address.
+    [Signature( "48 8B 0D ?? ?? ?? ?? E8 ?? ?? ?? 00 48 8D 8E ?? ?? 00 00 E8 ?? ?? ?? 00 33 D2", ScanType = ScanType.StaticAddress )]
+    private readonly Structs.CharacterUtility** _characterUtilityAddress = null;
+
+    // The initial function in which all the character resources get loaded.
+    public delegate void LoadDataFilesDelegate( Structs.CharacterUtility* characterUtility );
+
+    [Signature( "E8 ?? ?? ?? 00 48 8D 8E ?? ?? 00 00 E8 ?? ?? ?? 00 33 D2" )]
+    public Hook< LoadDataFilesDelegate > LoadDataFilesHook = null!;
+
+    public Structs.CharacterUtility* Address
+        => *_characterUtilityAddress;
+
+    public (IntPtr Address, int Size)[] DefaultResources = new (IntPtr, int)[Structs.CharacterUtility.NumResources];
+
+    public CharacterUtility()
+    {
+        SignatureHelper.Initialise( this );
+        LoadDataFilesHook.Enable();
+    }
+
+    // Self-disabling hook to set default resources after loading them.
+    private void LoadDataFilesDetour( Structs.CharacterUtility* characterUtility )
+    {
+        LoadDataFilesHook.Original( characterUtility );
+        LoadDefaultResources();
+        PluginLog.Debug( "Character Utility resources loaded and defaults stored, disabling hook." );
+        LoadDataFilesHook.Disable();
+    }
+
+    // We store the default data of the resources so we can always restore them.
+    private void LoadDefaultResources()
+    {
+        for( var i = 0; i < Structs.CharacterUtility.NumResources; ++i )
+        {
+            var resource = ( Structs.ResourceHandle* )Address->Resources[ i ];
+            DefaultResources[ i ] = resource->GetData();
+        }
+    }
+
+    // Set the data of one of the stored resources to a given pointer and length.
+    public bool SetResource( int idx, IntPtr data, int length )
+    {
+        var resource = ( Structs.ResourceHandle* )Address->Resources[ idx ];
+        var ret      = resource->SetData( data, length );
+        PluginLog.Verbose( "Set resource {Idx} to 0x{NewData:X} ({NewLength} bytes).", idx, ( ulong )data, length );
+        return ret;
+    }
+
+    // Reset the data of one of the stored resources to its default values.
+    public void ResetResource( int idx )
+    {
+        var resource = ( Structs.ResourceHandle* )Address->Resources[ idx ];
+        resource->SetData( DefaultResources[ idx ].Address, DefaultResources[ idx ].Size );
+    }
+
+    public void Dispose()
+    {
+        for( var i = 0; i < Structs.CharacterUtility.NumResources; ++i )
+        {
+            ResetResource( i );
+        }
+
+        LoadDataFilesHook.Dispose();
+    }
+}