78 lines
3.0 KiB
C#
78 lines
3.0 KiB
C#
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using dnlib.DotNet;
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using dnlib.DotNet.Emit;
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using Obfuz.Emit;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using static UnityEngine.Networking.UnityWebRequest;
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using UnityEngine.UIElements;
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namespace Obfuz.Virtualization
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{
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[NodeOutput(DataNodeType.Int32)]
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[NodeOutput(DataNodeType.Int64)]
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[NodeOutput(DataNodeType.Float32)]
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[NodeOutput(DataNodeType.Float64)]
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[NodeOutput(DataNodeType.Bytes)]
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[NodeOutput(DataNodeType.String)]
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public class BytesInitializeFromFieldRvaDataNode : DataNodeAny
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{
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private RvaData AllocateRvaData(CompileContext ctx)
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{
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ModuleDef mod = ctx.method.Module;
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RvaDataAllocator allocator = ctx.rvaDataAllocator;
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switch (Type)
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{
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//case DataNodeType.Int32: return allocator.Allocate(mod, IntValue);
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//case DataNodeType.Int64: return allocator.Allocate(mod, LongValue);
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//case DataNodeType.Float32: return allocator.Allocate(mod, FloatValue);
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//case DataNodeType.Float64: return allocator.Allocate(mod, DoubleValue);
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case DataNodeType.Bytes: return allocator.Allocate(mod, BytesValue);
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//case DataNodeType.String: return allocator.Allocate(mod, StringValue);
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default:
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throw new NotSupportedException($"Unsupported type: {Type}.");
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}
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}
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private static IMethod s_convertBytes;
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private void InitImportMetadatas(ModuleDef mod)
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{
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if (s_convertBytes != null)
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{
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return;
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}
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s_convertBytes = mod.Import(typeof(ConstUtility).GetMethod("InitializeArray", new[] { typeof(Array), typeof(byte[]), typeof(int), typeof(int) }));
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}
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IMethod GetConvertMethod(ModuleDef mod)
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{
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InitImportMetadatas(mod);
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return s_convertBytes;
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}
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public override void Compile(CompileContext ctx)
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{
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// only support Int32, int64, bytes.
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// string can only create from StringFromBytesNode
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// x = memcpy array.GetRange(index, length);
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var output = ctx.output;
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RvaData rvaData = AllocateRvaData(ctx);
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ModuleDef mod = ctx.method.Module;
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IMethod convertMethod = GetConvertMethod(mod);
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ctx.output.Add(Instruction.Create(OpCodes.Ldsfld, rvaData.field));
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output.Add(Instruction.Create(OpCodes.Ldc_I4, rvaData.offset));
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output.Add(Instruction.Create(OpCodes.Ldc_I4, rvaData.size));
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//output.Add(Instruction.Create(OpCodes.Newarr, mod.CorLibTypes.Byte.ToTypeDefOrRef()));
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//output.Add(Instruction.Create(OpCodes.Ldc_I4, 0));
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//output.Add(Instruction.Create(OpCodes.Ldc_I4, rvaData.size));
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output.Add(Instruction.Create(OpCodes.Call, convertMethod));
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}
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}
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}
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