public static void UpdateWrapper(MethodBase original, PatchInfo patchInfo)
{
var sortedPrefixes = GetSortedPatchMethods(original, patchInfo.prefixes);
var sortedPostfixes = GetSortedPatchMethods(original, patchInfo.postfixes);
var sortedTranspilers = GetSortedPatchMethods(original, patchInfo.transpilers);
if (HarmonyInstance.DEBUG)
{
//MethodPatcher.SavePatchedMethod(original, sortedPrefixes, sortedPostfixes, sortedTranspilers);
}
var replacement = MethodPatcher.CreatePatchedMethod(original, sortedPrefixes, sortedPostfixes, sortedTranspilers);
if (replacement == null)
{
throw new MissingMethodException("Cannot create dynamic replacement for " + original);
}
var originalCodeStart = Memory.GetMethodStart(original);
var patchCodeStart = Memory.GetMethodStart(replacement);
Memory.WriteJump(originalCodeStart, patchCodeStart);
PatchTools.RememberObject(original, replacement); // no gc for new value + release old value to gc
}
public static DynamicMethod UpdateWrapper(MethodBase original, PatchInfo patchInfo, string instanceID)
{
var sortedPrefixes = GetSortedPatchMethods(original, patchInfo.prefixes);
var sortedPostfixes = GetSortedPatchMethods(original, patchInfo.postfixes);
var sortedTranspilers = GetSortedPatchMethods(original, patchInfo.transpilers);
var replacement = MethodPatcher.CreatePatchedMethod(original, instanceID, sortedPrefixes, sortedPostfixes, sortedTranspilers);
if (replacement == null)
{
throw new MissingMethodException("Cannot create dynamic replacement for " + original.FullDescription());
}
var errorString = Memory.DetourMethod(original, replacement);
if (errorString != null)
{
throw new FormatException("Method " + original.FullDescription() + " cannot be patched. Reason: " + errorString);
}
if (UnhollowerSupport.IsGeneratedAssemblyType(original.DeclaringType))
{
var il2CppShim = CreateIl2CppShim(replacement, original.DeclaringType);
Imports.Hook(UnhollowerSupport.MethodBaseToIntPtr(original), il2CppShim.MethodHandle.GetFunctionPointer());
PatchTools.RememberObject(original, new PotatoTuple {
First = replacement, Second = il2CppShim
});
}
else
{
PatchTools.RememberObject(original, replacement); // no gc for new value + release old value to gc
}
return(replacement);
}
private static PatchHandle Apply(MethodBase original, MethodInfo postfix)
{
if (postfix == null)
{
throw new ArgumentNullException(nameof(postfix));
}
var originalCodeStart = Memory.GetMethodStart(original);
var replacement = MethodPatcher.CreatePatchedMethod(original, postfix);
if (replacement == null)
{
throw new MissingMethodException($"Cannot create dynamic replacement for {original}");
}
var patchCodeStart = Memory.GetMethodStart(replacement);
// This part effectively corrupts the original compiled method, so we should prepare to restore the overwritten part later
// (It doesn't look like it breaks something, but... better safe than sorry?)
var oldBytes = new byte[IntPtr.Size == sizeof(long) ? 12 : 6];
Marshal.Copy((IntPtr)originalCodeStart, oldBytes, 0, oldBytes.Length);
Memory.WriteJump(originalCodeStart, patchCodeStart);
return(new PatchHandle(patchedMethod: replacement, overwrittenCode: oldBytes));
}
public static DynamicMethod UpdateWrapper(MethodBase original, PatchInfo patchInfo, string instanceID)
{
var sortedPrefixes = GetSortedPatchMethods(original, patchInfo.prefixes);
var sortedPostfixes = GetSortedPatchMethods(original, patchInfo.postfixes);
var sortedTranspilers = GetSortedPatchMethods(original, patchInfo.transpilers);
var replacement = MethodPatcher.CreatePatchedMethod(original, instanceID, sortedPrefixes, sortedPostfixes, sortedTranspilers);
if (replacement == null)
{
throw new MissingMethodException("Cannot create dynamic replacement for " + original.FullDescription());
}
var errorString = Memory.DetourMethod(original, replacement);
if (errorString != null)
{
throw new FormatException("Method " + original.FullDescription() + " cannot be patched. Reason: " + errorString);
}
if (IsIl2CppType(original.DeclaringType))
{
var il2CppShim = CreateIl2CppShim(replacement, original.DeclaringType);
Imports.Hook(NET_SDK.SDK.GetClass(original.DeclaringType.FullName).GetMethod(original.Name).Ptr, il2CppShim.MethodHandle.GetFunctionPointer());
PatchTools.RememberObject(original, new Tuple <MethodBase, MethodBase>(replacement, il2CppShim));
}
else
{
PatchTools.RememberObject(original, replacement); // no gc for new value + release old value to gc
}
return(replacement);
}
public static DynamicMethod UpdateWrapper(MethodBase original, PatchInfo patchInfo, string instanceID)
{
var sortedPrefixes = GetSortedPatchMethods(original, patchInfo.prefixes);
var sortedPostfixes = GetSortedPatchMethods(original, patchInfo.postfixes);
var sortedTranspilers = GetSortedPatchMethods(original, patchInfo.transpilers);
bool isIl2Cpp = UnhollowerSupport.IsGeneratedAssemblyType(original.DeclaringType);
if (isIl2Cpp)
{
if (sortedTranspilers.Count > 0)
{
throw new NotSupportedException("IL2CPP patches cannot use transpilers (got " + sortedTranspilers.Count + ")");
}
if (patchInfo.copiedMethodInfoPointer == IntPtr.Zero)
{
IntPtr origMethodPtr = UnhollowerSupport.MethodBaseToIl2CppMethodInfoPointer(original);
patchInfo.copiedMethodInfoPointer = CopyMethodInfoStruct(origMethodPtr);
HarmonySharedState.UpdatePatchInfo(original, patchInfo);
}
sortedTranspilers.Add(AccessTools.DeclaredMethod(typeof(PatchFunctions), "UnhollowerTranspiler"));
}
var replacement = MethodPatcher.CreatePatchedMethod(original, instanceID, sortedPrefixes, sortedPostfixes, sortedTranspilers);
if (replacement == null)
{
throw new MissingMethodException("Cannot create dynamic replacement for " + original.FullDescription());
}
if (isIl2Cpp)
{
DynamicMethod il2CppShim = CreateIl2CppShim(replacement, original);
InstallIl2CppPatch(patchInfo, il2CppShim);
PatchTools.RememberObject(original, new PotatoTuple {
First = replacement, Second = il2CppShim
});
}
else
{
var errorString = Memory.DetourMethod(original, replacement);
if (errorString != null)
{
throw new FormatException("Method " + original.FullDescription() + " cannot be patched. Reason: " + errorString);
}
PatchTools.RememberObject(original, replacement); // no gc for new value + release old value to gc
}
return(replacement);
}
public static void UpdateWrapper(MethodBase original, PatchInfo patchInfo)
{
var sortedPrefixes = GetSortedPatchMethods(original, patchInfo.prefixes);
var sortedPostfixes = GetSortedPatchMethods(original, patchInfo.postfixes);
var sortedTranspilers = GetSortedPatchMethods(original, patchInfo.transpilers);
var originalCodeStart = Memory.GetMethodStart(original);
// If we're overwriting an old patch, restore the original 12 (or 6) bytes of the method beforehand
object oldHandle;
if (PatchTools.RecallObject(original, out oldHandle))
{
var oldPatchHandle = (PatchHandle)oldHandle;
Memory.WriteBytes(originalCodeStart, oldPatchHandle.OverwrittenCode);
}
if (patchInfo.postfixes.Length + patchInfo.prefixes.Length + patchInfo.transpilers.Length == 0)
{
// No patches, can just leave the original method intact
PatchTools.ForgetObject(originalCodeStart);
return;
}
var replacement = MethodPatcher.CreatePatchedMethod(original, sortedPrefixes, sortedPostfixes, sortedTranspilers);
if (replacement == null)
{
throw new MissingMethodException("Cannot create dynamic replacement for " + original);
}
var patchCodeStart = Memory.GetMethodStart(replacement);
// This part effectively corrupts the original compiled method, so we should prepare to restore the overwritten part later
// (It doesn't look like it breaks something, but... better safe than sorry?)
var oldBytes = new byte[(IntPtr.Size == sizeof(long)) ? 12 : 6];
Marshal.Copy((IntPtr)originalCodeStart, oldBytes, 0, oldBytes.Length);
// Store code being overwritten by the jump for the restoration
PatchTools.RememberObject(original, new PatchHandle {
PatchedMethod = replacement, OverwrittenCode = oldBytes
});
Memory.WriteJump(originalCodeStart, patchCodeStart);
}
public static void UpdateWrapper(MethodBase original, PatchInfo patchInfo, PatchFlags flags)
{
var sortedPrefixes = GetSortedPatchMethods(original, patchInfo.prefixes);
var sortedPostfixes = GetSortedPatchMethods(original, patchInfo.postfixes);
var sortedTranspilers = GetSortedPatchMethods(original, patchInfo.transpilers).Select(m => TranspilerImpl.From(m)).ToList();
var replacement = MethodPatcher.CreatePatchedMethod(original, sortedPrefixes, sortedPostfixes, sortedTranspilers, flags);
if (replacement == null)
{
throw new MissingMethodException("Cannot create dynamic replacement for " + original);
}
patchInfo.patchdata.orgaddress = Memory.GetMethodStart(original);
patchInfo.patchdata.jmpaddress = Memory.GetMethodStart(replacement);
Memory.WriteJump(patchInfo.patchdata.orgaddress, patchInfo.patchdata.jmpaddress, out patchInfo.patchdata.orgbytes, out patchInfo.patchdata.jmpbytes);
PatchTools.RememberObject(original, replacement); // no gc for new value + release old value to gc
}
/// <summary>Creates new dynamic method with the latest patches and detours the original method</summary>
/// <param name="original">The original method</param>
/// <param name="patchInfo">Information describing the patches</param>
/// <param name="instanceID">Harmony ID</param>
/// <returns>The newly created dynamic method</returns>
///
internal static DynamicMethod UpdateWrapper(MethodBase original, PatchInfo patchInfo, string instanceID)
{
var sortedPrefixes = GetSortedPatchMethods(original, patchInfo.prefixes);
var sortedPostfixes = GetSortedPatchMethods(original, patchInfo.postfixes);
var sortedTranspilers = GetSortedPatchMethods(original, patchInfo.transpilers);
var replacement = MethodPatcher.CreatePatchedMethod(original, instanceID, sortedPrefixes, sortedPostfixes, sortedTranspilers);
if (replacement == null)
{
throw new MissingMethodException("Cannot create dynamic replacement for " + original.FullDescription());
}
var errorString = Memory.DetourMethod(original, replacement);
if (errorString != null)
{
throw new FormatException("Method " + original.FullDescription() + " cannot be patched. Reason: " + errorString);
}
PatchTools.RememberObject(original, replacement); // no gc for new value + release old value to gc
return(replacement);
}
