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- extern alias il2cpp;
- using System;
- using System.Diagnostics;
- using System.Linq;
- using System.Reflection;
- using System.Runtime.InteropServices;
- using BepInEx.Bootstrap;
- using BepInEx.Configuration;
- using BepInEx.IL2CPP.Hook;
- using BepInEx.IL2CPP.Logging;
- using BepInEx.Logging;
- using BepInEx.Preloader.Core;
- using BepInEx.Preloader.Core.Logging;
- using HarmonyLib.Public.Patching;
- using UnhollowerBaseLib.Runtime;
- using UnhollowerRuntimeLib;
- using IL2CPPUnityEngine = il2cpp::UnityEngine;
- namespace BepInEx.IL2CPP
- {
- public class IL2CPPChainloader : BaseChainloader<BasePlugin>
- {
- [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
- private delegate IntPtr RuntimeInvokeDetourDelegate(IntPtr method, IntPtr obj, IntPtr parameters, IntPtr exc);
- [DllImport("kernel32", CharSet = CharSet.Ansi, ExactSpelling = true, SetLastError = true)]
- private static extern IntPtr GetProcAddress(IntPtr hModule, string procName);
- private static RuntimeInvokeDetourDelegate originalInvoke;
- private static FastNativeDetour RuntimeInvokeDetour { get; set; }
- private static IL2CPPChainloader Instance { get; set; }
- public override unsafe void Initialize(string gameExePath = null)
- {
- UnhollowerBaseLib.GeneratedDatabasesUtil.DatabasesLocationOverride = Preloader.IL2CPPUnhollowedPath;
- PatchManager.ResolvePatcher += IL2CPPDetourMethodPatcher.TryResolve;
- base.Initialize(gameExePath);
- Instance = this;
- var version = //Version.Parse(Application.unityVersion);
- Version.Parse(Process.GetCurrentProcess().MainModule.FileVersionInfo.FileVersion);
- UnityVersionHandler.Initialize(version.Major, version.Minor, version.Revision);
- // One or the other here for Unhollower to work correctly
- //ClassInjector.Detour = new DetourHandler();
- ClassInjector.DoHook = (ptr, patchedFunctionPtr) =>
- {
- IntPtr originalFunc = new IntPtr(*(void**)ptr);
- var detour = new FastNativeDetour(originalFunc, patchedFunctionPtr);
-
- detour.Apply();
- *(void**)ptr = (void*)detour.TrampolinePtr;
- };
- var gameAssemblyModule = Process.GetCurrentProcess().Modules.Cast<ProcessModule>().First(x => x.ModuleName.Contains("GameAssembly"));
- var functionPtr = GetProcAddress(gameAssemblyModule.BaseAddress, "il2cpp_runtime_invoke"); //DynDll.GetFunction(gameAssemblyModule.BaseAddress, "il2cpp_runtime_invoke");
- PreloaderLogger.Log.LogDebug($"Runtime invoke pointer: 0x{functionPtr.ToInt64():X}");
- RuntimeInvokeDetour = new FastNativeDetour(functionPtr,
- MonoExtensions.GetFunctionPointerForDelegate(new RuntimeInvokeDetourDelegate(OnInvokeMethod), CallingConvention.Cdecl));
- RuntimeInvokeDetour.Apply();
- originalInvoke = RuntimeInvokeDetour.GenerateTrampoline<RuntimeInvokeDetourDelegate>();
- PreloaderLogger.Log.LogDebug("Runtime invoke patched");
- }
- private static IntPtr OnInvokeMethod(IntPtr method, IntPtr obj, IntPtr parameters, IntPtr exc)
- {
- string methodName = Marshal.PtrToStringAnsi(UnhollowerBaseLib.IL2CPP.il2cpp_method_get_name(method));
- bool unhook = false;
- if (methodName == "Internal_ActiveSceneChanged")
- {
- try
- {
- if (ConfigUnityLogging.Value)
- {
- Logger.Sources.Add(new IL2CPPUnityLogSource());
- IL2CPPUnityEngine.Application.CallLogCallback("Test call after applying unity logging hook", "", IL2CPPUnityEngine.LogType.Assert, true);
- }
- unhook = true;
- Instance.Execute();
- }
- catch (Exception ex)
- {
- Logger.LogFatal("Unable to execute IL2CPP chainloader");
- Logger.LogError(ex);
- }
- }
- var result = originalInvoke(method, obj, parameters, exc);
- if (unhook)
- {
- RuntimeInvokeDetour.Dispose();
- PreloaderLogger.Log.LogDebug("Runtime invoke unpatched");
- }
- return result;
- }
- protected override void InitializeLoggers()
- {
- base.InitializeLoggers();
- if (!ConfigDiskWriteUnityLog.Value)
- {
- DiskLogListener.BlacklistedSources.Add("Unity");
- }
- ChainloaderLogHelper.RewritePreloaderLogs();
- Logger.Sources.Add(new IL2CPPLogSource());
- }
- public override BasePlugin LoadPlugin(PluginInfo pluginInfo, Assembly pluginAssembly)
- {
- var type = pluginAssembly.GetType(pluginInfo.TypeName);
- var pluginInstance = (BasePlugin)Activator.CreateInstance(type);
- pluginInstance.Load();
- return pluginInstance;
- }
- private static readonly ConfigEntry<bool> ConfigUnityLogging = ConfigFile.CoreConfig.Bind(
- "Logging", "UnityLogListening",
- true,
- "Enables showing unity log messages in the BepInEx logging system.");
- private static readonly ConfigEntry<bool> ConfigDiskWriteUnityLog = ConfigFile.CoreConfig.Bind(
- "Logging.Disk", "WriteUnityLog",
- false,
- "Include unity log messages in log file output.");
- }
- }
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