private static void InstallBootstrapPatch()
{
var cAsmName = Assembly.GetExecutingAssembly().GetName();
var managedPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
var dataDir = new DirectoryInfo(managedPath).Parent.Name;
var gameName = dataDir.Substring(0, dataDir.Length - 5);
loader.Debug("Finding backup");
var backupPath = Path.Combine(Environment.CurrentDirectory, "IPA", "Backups", gameName);
var bkp = BackupManager.FindLatestBackup(backupPath);
if (bkp == null)
{
loader.Warn("No backup found! Was BSIPA installed using the installer?");
}
loader.Debug("Ensuring patch on UnityEngine.CoreModule exists");
#region Insert patch into UnityEngine.CoreModule.dll
{
var unityPath = Path.Combine(managedPath,
"UnityEngine.CoreModule.dll");
// this is a critical section because if you exit in here, CoreModule can die
CriticalSection.EnterExecuteSection();
var unityAsmDef = AssemblyDefinition.ReadAssembly(unityPath, new ReaderParameters
{
ReadWrite = false,
InMemory = true,
ReadingMode = ReadingMode.Immediate
});
var unityModDef = unityAsmDef.MainModule;
bool modified = false;
foreach (var asmref in unityModDef.AssemblyReferences)
{
if (asmref.Name == cAsmName.Name)
{
if (asmref.Version != cAsmName.Version)
{
asmref.Version = cAsmName.Version;
modified = true;
}
}
}
var application = unityModDef.GetType("UnityEngine", "Application");
MethodDefinition cctor = null;
foreach (var m in application.Methods)
{
if (m.IsRuntimeSpecialName && m.Name == ".cctor")
{
cctor = m;
}
}
var cbs = unityModDef.ImportReference(((Action)CreateBootstrapper).Method);
if (cctor == null)
{
cctor = new MethodDefinition(".cctor",
MethodAttributes.RTSpecialName | MethodAttributes.Static | MethodAttributes.SpecialName,
unityModDef.TypeSystem.Void);
application.Methods.Add(cctor);
modified = true;
var ilp = cctor.Body.GetILProcessor();
ilp.Emit(OpCodes.Call, cbs);
ilp.Emit(OpCodes.Ret);
}
else
{
var ilp = cctor.Body.GetILProcessor();
for (var i = 0; i < Math.Min(2, cctor.Body.Instructions.Count); i++)
{
var ins = cctor.Body.Instructions[i];
switch (i)
{
case 0 when ins.OpCode != OpCodes.Call:
ilp.Replace(ins, ilp.Create(OpCodes.Call, cbs));
modified = true;
break;
case 0:
{
var methodRef = ins.Operand as MethodReference;
if (methodRef?.FullName != cbs.FullName)
{
ilp.Replace(ins, ilp.Create(OpCodes.Call, cbs));
modified = true;
}
break;
}
case 1 when ins.OpCode != OpCodes.Ret:
ilp.Replace(ins, ilp.Create(OpCodes.Ret));
modified = true;
break;
}
}
}
if (modified)
{
bkp?.Add(unityPath);
unityAsmDef.Write(unityPath);
}
CriticalSection.ExitExecuteSection();
}
#endregion Insert patch into UnityEngine.CoreModule.dll
loader.Debug("Ensuring Assembly-CSharp is virtualized");
{
var ascPath = Path.Combine(managedPath,
"MainAssembly.dll"); // TODO: change to config option for other games
#region Virtualize Assembly-CSharp.dll
{
CriticalSection.EnterExecuteSection();
try
{
var ascModule = VirtualizedModule.Load(ascPath);
ascModule.Virtualize(cAsmName, () => bkp?.Add(ascPath));
}
catch (Exception e)
{
loader.Error($"Could not virtualize {ascPath}");
loader.Error(e);
}
CriticalSection.ExitExecuteSection();
}
#endregion Virtualize Assembly-CSharp.dll
#region Anti-Yeet
CriticalSection.EnterExecuteSection();
try
{
loader.Debug("Applying anti-yeet patch");
var ascAsmDef = AssemblyDefinition.ReadAssembly(ascPath, new ReaderParameters
{
ReadWrite = false,
InMemory = true,
ReadingMode = ReadingMode.Immediate
});
var ascModDef = ascAsmDef.MainModule;
var deleter = ascModDef.GetType("IPAPluginsDirDeleter");
deleter.Methods.Clear(); // delete all methods
ascAsmDef.Write(ascPath);
}
catch (Exception)
{
// ignore
}
CriticalSection.ExitExecuteSection();
#endregion
}
}
private static void InstallBootstrapPatch()
{
var sw = Stopwatch.StartNew();
var cAsmName = Assembly.GetExecutingAssembly().GetName();
var managedPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
var dataDir = new DirectoryInfo(managedPath).Parent.Name;
var gameName = dataDir.Substring(0, dataDir.Length - 5);
injector.Debug("Finding backup");
var backupPath = Path.Combine(Environment.CurrentDirectory, "IPA", "Backups", gameName);
var bkp = BackupManager.FindLatestBackup(backupPath);
if (bkp == null)
{
injector.Warn("No backup found! Was BSIPA installed using the installer?");
}
injector.Debug("Ensuring patch on UnityEngine.CoreModule exists");
#region Insert patch into UnityEngine.CoreModule.dll
{
var unityPath = Path.Combine(managedPath,
"UnityEngine.CoreModule.dll");
// this is a critical section because if you exit in here, CoreModule can die
using var critSec = CriticalSection.ExecuteSection();
using var unityAsmDef = AssemblyDefinition.ReadAssembly(unityPath, new ReaderParameters
{
ReadWrite = false,
InMemory = true,
ReadingMode = ReadingMode.Immediate
});
var unityModDef = unityAsmDef.MainModule;
bool modified = false;
foreach (var asmref in unityModDef.AssemblyReferences)
{
if (asmref.Name == cAsmName.Name)
{
if (asmref.Version != cAsmName.Version)
{
asmref.Version = cAsmName.Version;
modified = true;
}
}
}
var application = unityModDef.GetType("UnityEngine", "Camera");
if (application == null)
{
injector.Critical("UnityEngine.CoreModule doesn't have a definition for UnityEngine.Camera!"
+ "Nothing to patch to get ourselves into the Unity run cycle!");
goto endPatchCoreModule;
}
MethodDefinition?cctor = null;
foreach (var m in application.Methods)
{
if (m.IsRuntimeSpecialName && m.Name == ".cctor")
{
cctor = m;
}
}
var cbs = unityModDef.ImportReference(((Action)CreateBootstrapper).Method);
if (cctor == null)
{
cctor = new MethodDefinition(".cctor",
MethodAttributes.RTSpecialName | MethodAttributes.Static | MethodAttributes.SpecialName,
unityModDef.TypeSystem.Void);
application.Methods.Add(cctor);
modified = true;
var ilp = cctor.Body.GetILProcessor();
ilp.Emit(OpCodes.Call, cbs);
ilp.Emit(OpCodes.Ret);
}
else
{
var ilp = cctor.Body.GetILProcessor();
for (var i = 0; i < Math.Min(2, cctor.Body.Instructions.Count); i++)
{
var ins = cctor.Body.Instructions[i];
switch (i)
{
case 0 when ins.OpCode != OpCodes.Call:
ilp.Replace(ins, ilp.Create(OpCodes.Call, cbs));
modified = true;
break;
case 0:
{
var methodRef = ins.Operand as MethodReference;
if (methodRef?.FullName != cbs.FullName)
{
ilp.Replace(ins, ilp.Create(OpCodes.Call, cbs));
modified = true;
}
break;
}
case 1 when ins.OpCode != OpCodes.Ret:
ilp.Replace(ins, ilp.Create(OpCodes.Ret));
modified = true;
break;
}
}
}
if (modified)
{
bkp?.Add(unityPath);
unityAsmDef.Write(unityPath);
}
}
endPatchCoreModule:
#endregion Insert patch into UnityEngine.CoreModule.dll
injector.Debug("Ensuring game assemblies are virtualized");
#region Virtualize game assemblies
bool isFirst = true;
foreach (var name in SelfConfig.GameAssemblies_)
{
var ascPath = Path.Combine(managedPath, name);
using var execSec = CriticalSection.ExecuteSection();
try
{
injector.Debug($"Virtualizing {name}");
using var ascModule = VirtualizedModule.Load(ascPath);
ascModule.Virtualize(cAsmName, () => bkp?.Add(ascPath));
}
catch (Exception e)
{
injector.Error($"Could not virtualize {ascPath}");
if (SelfConfig.Debug_.ShowHandledErrorStackTraces_)
{
injector.Error(e);
}
}
#if BeatSaber
if (isFirst)
{
try
{
injector.Debug("Applying anti-yeet patch");
using var ascAsmDef = AssemblyDefinition.ReadAssembly(ascPath, new ReaderParameters
{
ReadWrite = false,
InMemory = true,
ReadingMode = ReadingMode.Immediate
});
var ascModDef = ascAsmDef.MainModule;
var deleter = ascModDef.GetType("IPAPluginsDirDeleter");
deleter.Methods.Clear(); // delete all methods
ascAsmDef.Write(ascPath);
isFirst = false;
}
catch (Exception e)
{
injector.Warn($"Could not apply anti-yeet patch to {ascPath}");
if (SelfConfig.Debug_.ShowHandledErrorStackTraces_)
{
injector.Warn(e);
}
}
}
#endif
}
#endregion
sw.Stop();
injector.Info($"Installing bootstrapper took {sw.Elapsed}");
}