109 lines
3.8 KiB
C#
109 lines
3.8 KiB
C#
// Copyright 2025 Code Philosophy
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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using dnlib.DotNet;
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using System.Collections.Generic;
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using System.IO;
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namespace Obfuz.Utils
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{
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public class AssemblyCache
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{
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private readonly IAssemblyResolver _assemblyPathResolver;
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private readonly ModuleContext _modCtx;
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private readonly AssemblyResolver _asmResolver;
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private bool _enableTypeDefCache;
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public ModuleContext ModCtx => _modCtx;
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public Dictionary<string, ModuleDefMD> LoadedModules { get; } = new Dictionary<string, ModuleDefMD>();
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public AssemblyCache(IAssemblyResolver assemblyResolver)
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{
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_enableTypeDefCache = true;
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_assemblyPathResolver = assemblyResolver;
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_modCtx = ModuleDef.CreateModuleContext();
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_asmResolver = (AssemblyResolver)_modCtx.AssemblyResolver;
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_asmResolver.EnableTypeDefCache = _enableTypeDefCache;
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_asmResolver.UseGAC = false;
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}
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public bool EnableTypeDefCache
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{
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get => _enableTypeDefCache;
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set
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{
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_enableTypeDefCache = value;
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_asmResolver.EnableTypeDefCache = value;
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foreach (var mod in LoadedModules.Values)
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{
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mod.EnableTypeDefFindCache = value;
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}
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}
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}
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public ModuleDefMD TryLoadModule(string moduleName)
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{
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string dllPath = _assemblyPathResolver.ResolveAssembly(moduleName);
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if (string.IsNullOrEmpty(dllPath))
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{
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return null;
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}
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return LoadModule(moduleName);
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}
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public ModuleDefMD LoadModule(string moduleName)
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{
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// Debug.Log($"load module:{moduleName}");
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if (LoadedModules.TryGetValue(moduleName, out var mod))
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{
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return mod;
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}
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string assemblyPath = _assemblyPathResolver.ResolveAssembly(moduleName);
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if (string.IsNullOrEmpty(assemblyPath))
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{
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throw new FileNotFoundException($"Assembly {moduleName} not found");
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}
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mod = DoLoadModule(assemblyPath);
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LoadedModules.Add(moduleName, mod);
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foreach (var refAsm in mod.GetAssemblyRefs())
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{
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LoadModule(refAsm.Name);
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}
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return mod;
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}
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private ModuleDefMD DoLoadModule(string dllPath)
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{
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//Debug.Log($"do load module:{dllPath}");
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ModuleDefMD mod = ModuleDefMD.Load(File.ReadAllBytes(dllPath), _modCtx);
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mod.EnableTypeDefFindCache = _enableTypeDefCache;
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_asmResolver.AddToCache(mod);
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return mod;
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}
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}
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}
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