/// <summary>Applies the patch</summary>
/// <returns>A list of all created dynamic methods</returns>
///
public List <DynamicMethod> Patch()
{
lock (locker)
{
var dynamicMethods = new List <DynamicMethod>();
foreach (var original in originals)
{
if (original == null)
{
throw new NullReferenceException("Null method for " + instance.Id);
}
var individualPrepareResult = RunMethod <HarmonyPrepare, bool>(true, original);
if (individualPrepareResult)
{
var patchInfo = HarmonySharedState.GetPatchInfo(original);
if (patchInfo == null)
{
patchInfo = new PatchInfo();
}
PatchFunctions.AddPrefix(patchInfo, instance.Id, prefix);
PatchFunctions.AddPostfix(patchInfo, instance.Id, postfix);
PatchFunctions.AddTranspiler(patchInfo, instance.Id, transpiler);
PatchFunctions.AddFinalizer(patchInfo, instance.Id, finalizer);
dynamicMethods.Add(PatchFunctions.UpdateWrapper(original, patchInfo, instance.Id));
HarmonySharedState.UpdatePatchInfo(original, patchInfo);
RunMethod <HarmonyCleanup>(original);
}
}
return(dynamicMethods);
}
}
internal static List <CodeInstruction> GetInstructions(ILGenerator generator, MethodBase method, int maxTranspilers)
{
if (generator == null)
{
throw new ArgumentNullException(nameof(generator));
}
if (method == null)
{
throw new ArgumentNullException(nameof(method));
}
var originalVariables = MethodPatcher.DeclareLocalVariables(generator, method);
var useStructReturnBuffer = StructReturnBuffer.NeedsFix(method);
var copier = new MethodCopier(method, generator, originalVariables);
copier.SetArgumentShift(useStructReturnBuffer);
var info = Harmony.GetPatchInfo(method);
if (info != null)
{
var sortedTranspilers = PatchFunctions.GetSortedPatchMethods(method, info.Transpilers.ToArray(), false);
for (var i = 0; i < maxTranspilers && i < sortedTranspilers.Count; i++)
{
copier.AddTranspiler(sortedTranspilers[i]);
}
}
return(copier.Finalize(null, null, out var _));
}
/// <summary>Unpatches patches of a given type and/or Harmony ID</summary>
/// <param name="type">The patch type</param>
/// <param name="harmonyID">Harmony ID or (*) for any</param>
///
public void Unpatch(HarmonyPatchType type, string harmonyID)
{
lock (locker)
{
foreach (var original in originals)
{
var patchInfo = HarmonySharedState.GetPatchInfo(original);
if (patchInfo == null)
{
patchInfo = new PatchInfo();
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Prefix)
{
PatchFunctions.RemovePrefix(patchInfo, harmonyID);
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Postfix)
{
PatchFunctions.RemovePostfix(patchInfo, harmonyID);
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Transpiler)
{
PatchFunctions.RemoveTranspiler(patchInfo, harmonyID);
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Finalizer)
{
PatchFunctions.RemoveFinalizer(patchInfo, harmonyID);
}
PatchFunctions.UpdateWrapper(original, patchInfo, instance.Id);
HarmonySharedState.UpdatePatchInfo(original, patchInfo);
}
}
}
internal static List <CodeInstruction> GetInstructions(ILGenerator generator, MethodBase method, int maxTranspilers)
{
if (generator == null)
{
throw new ArgumentNullException(nameof(generator));
}
if (method == null)
{
throw new ArgumentNullException(nameof(method));
}
var originalVariables = MethodPatcher.DeclareLocalVariables(generator, method);
var useStructReturnBuffer = StructReturnBuffer.NeedsFix(method);
var copier = new MethodCopier(method, generator, originalVariables);
copier.SetArgumentShift(useStructReturnBuffer);
var info = Harmony.GetPatchInfo(method);
if (info != null)
{
var sortedTranspilers = PatchFunctions.GetSortedPatchMethods(method, info.Transpilers.ToArray(), false);
for (var i = 0; i < maxTranspilers && i < sortedTranspilers.Count; i++)
{
copier.AddTranspiler(sortedTranspilers[i]);
}
}
var endLabels = new List <Label>();
var emitter = new Emitter(generator, false);
copier.Finalize(emitter, endLabels, out var hasReturnCode);
return(emitter.GetInstructions().OrderBy(pair => pair.Key).Select(pair => pair.Value).ToList());
}
void ProcessPatchJob(PatchJobs <MethodInfo> .Job job)
{
MethodInfo replacement = default;
var individualPrepareResult = RunMethod <HarmonyPrepare, bool>(true, false, null, job.original);
Exception exception = null;
if (individualPrepareResult)
{
lock (PatchProcessor.locker)
{
try
{
var patchInfo = HarmonySharedState.GetPatchInfo(job.original) ?? new PatchInfo();
patchInfo.AddPrefixes(instance.Id, job.prefixes.ToArray());
patchInfo.AddPostfixes(instance.Id, job.postfixes.ToArray());
patchInfo.AddTranspilers(instance.Id, job.transpilers.ToArray());
patchInfo.AddFinalizers(instance.Id, job.finalizers.ToArray());
replacement = PatchFunctions.UpdateWrapper(job.original, patchInfo);
HarmonySharedState.UpdatePatchInfo(job.original, replacement, patchInfo);
}
catch (Exception ex)
{
exception = ex;
}
}
}
RunMethod <HarmonyCleanup>(ref exception, job.original, exception);
ReportException(exception, job.original);
job.replacement = replacement;
}
/// <summary>Applies all registered patches</summary>
/// <returns>The generated replacement method</returns>
///
public MethodInfo Patch()
{
if (original == null)
{
throw new NullReferenceException($"Null method for {instance.Id}");
}
if (original.IsDeclaredMember() == false)
{
var declaredMember = original.GetDeclaredMember();
throw new ArgumentException($"You can only patch implemented methods/constructors. Path the declared method {declaredMember.FullDescription()} instead.");
}
lock (locker)
{
var patchInfo = HarmonySharedState.GetPatchInfo(original);
if (patchInfo == null)
{
patchInfo = new PatchInfo();
}
PatchFunctions.AddPrefix(patchInfo, instance.Id, prefix);
PatchFunctions.AddPostfix(patchInfo, instance.Id, postfix);
PatchFunctions.AddTranspiler(patchInfo, instance.Id, transpiler);
PatchFunctions.AddFinalizer(patchInfo, instance.Id, finalizer);
var replacement = PatchFunctions.UpdateWrapper(original, patchInfo);
HarmonySharedState.UpdatePatchInfo(original, patchInfo);
return(replacement);
}
}
/// <summary>Unpatches patches of a given type and/or Harmony ID</summary>
/// <param name="type">The <see cref="HarmonyPatchType"/> patch type</param>
/// <param name="harmonyID">Harmony ID or <c>*</c> for any</param>
/// <returns>A <see cref="PatchProcessor"/> for chaining calls</returns>
///
public PatchProcessor Unpatch(HarmonyPatchType type, string harmonyID)
{
lock (locker)
{
var patchInfo = HarmonySharedState.GetPatchInfo(original);
if (patchInfo == null)
{
patchInfo = new PatchInfo();
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Prefix)
{
PatchFunctions.RemovePrefix(patchInfo, harmonyID);
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Postfix)
{
PatchFunctions.RemovePostfix(patchInfo, harmonyID);
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Transpiler)
{
PatchFunctions.RemoveTranspiler(patchInfo, harmonyID);
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Finalizer)
{
PatchFunctions.RemoveFinalizer(patchInfo, harmonyID);
}
_ = PatchFunctions.UpdateWrapper(original, patchInfo);
HarmonySharedState.UpdatePatchInfo(original, patchInfo);
return(this);
}
}
/// <summary>Applies all registered patches</summary>
/// <returns>The generated replacement method</returns>
///
public MethodInfo Patch()
{
if (original is null)
{
throw new NullReferenceException($"Null method for {instance.Id}");
}
if (original.IsDeclaredMember() is false)
{
Logger.Log(Logger.LogChannel.Warn, () => $"{instance.Id}: You should only patch implemented methods/constructors to avoid issues. Patch the declared method {original.GetDeclaredMember().FullDescription()} instead of {original.FullDescription()}.");
}
lock (locker)
{
var patchInfo = original.ToPatchInfo();
patchInfo.AddPrefixes(instance.Id, prefix);
patchInfo.AddPostfixes(instance.Id, postfix);
patchInfo.AddTranspilers(instance.Id, transpiler);
patchInfo.AddFinalizers(instance.Id, finalizer);
patchInfo.AddILManipulators(instance.Id, ilmanipulator);
var replacement = PatchFunctions.UpdateWrapper(original, patchInfo);
PatchManager.AddReplacementOriginal(original, replacement);
return(replacement);
}
}
/// <summary>Unpatches patches of a given type and/or Harmony ID</summary>
/// <param name="type">The <see cref="HarmonyPatchType"/> patch type</param>
/// <param name="harmonyID">Harmony ID or <c>*</c> for any</param>
/// <returns>A <see cref="PatchProcessor"/> for chaining calls</returns>
///
public PatchProcessor Unpatch(HarmonyPatchType type, string harmonyID)
{
lock (locker)
{
var patchInfo = original.ToPatchInfo();
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Prefix)
{
patchInfo.RemovePrefix(harmonyID);
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Postfix)
{
patchInfo.RemovePostfix(harmonyID);
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Transpiler)
{
patchInfo.RemoveTranspiler(harmonyID);
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.Finalizer)
{
patchInfo.RemoveFinalizer(harmonyID);
}
if (type == HarmonyPatchType.All || type == HarmonyPatchType.ILManipulator)
{
patchInfo.RemoveILManipulator(harmonyID);
}
var replacement = PatchFunctions.UpdateWrapper(original, patchInfo);
PatchManager.AddReplacementOriginal(original, replacement);
return(this);
}
}
static HarmonySharedState()
{
// create singleton type
var type = GetOrCreateSharedStateType();
// copy 'actualVersion' over to our fields
var versionField = type.GetField("version");
if ((int)versionField.GetValue(null) == 0)
{
versionField.SetValue(null, internalVersion);
}
actualVersion = (int)versionField.GetValue(null);
// get or initialize global 'state' field
var stateField = type.GetField("state");
if (stateField.GetValue(null) is null)
{
stateField.SetValue(null, new Dictionary <MethodBase, byte[]>());
}
// get or initialize global 'originals' field
var originalsField = type.GetField("originals");
if (originalsField != null && originalsField.GetValue(null) is null)
{
originalsField.SetValue(null, new Dictionary <MethodInfo, MethodBase>());
}
// copy 'state' over to our fields
state = (Dictionary <MethodBase, byte[]>)stateField.GetValue(null);
// copy 'originals' over to our fields
originals = new Dictionary <MethodInfo, MethodBase>();
if (originalsField != null) // may not exist in older versions
{
originals = (Dictionary <MethodInfo, MethodBase>)originalsField.GetValue(null);
}
// newer .NET versions can re-jit methods so we need to patch them after that happens
DetourHelper.Runtime.OnMethodCompiled += (MethodBase method, IntPtr codeStart, ulong codeLen) =>
{
if (method == null)
{
return;
}
var info = GetPatchInfo(method);
if (info == null)
{
return;
}
PatchFunctions.UpdateRecompiledMethod(method, codeStart, info);
};
}
/// <summary>Applies the patch</summary>
///
public void Patch(HarmonyReversePatchType type = HarmonyReversePatchType.Original)
{
if (original == null)
{
throw new NullReferenceException("Null method for " + instance.Id);
}
var transpiler = GetTranspiler(standin);
PatchFunctions.ReversePatch(standin, original, instance.Id, transpiler);
}
/// <summary>Applies the patch</summary>
/// <param name="type">The type of patch, see <see cref="HarmonyReversePatchType"/></param>
/// <returns>The generated replacement method</returns>
///
public MethodInfo Patch(HarmonyReversePatchType type = HarmonyReversePatchType.Original)
{
if (original == null)
{
throw new NullReferenceException($"Null method for {instance.Id}");
}
var transpiler = GetTranspiler(standin.method);
return(PatchFunctions.ReversePatch(standin, original, transpiler));
}
void ProcessPatchJob(PatchJobs <MethodInfo> .Job job)
{
MethodInfo replacement = default;
var individualPrepareResult = RunMethod <HarmonyPrepare, bool>(true, false, null, job.original);
Exception exception = null;
if (individualPrepareResult)
{
lock (PatchProcessor.locker)
{
try
{
var patchInfo = HarmonySharedState.GetPatchInfo(job.original);
if (patchInfo == null)
{
patchInfo = new PatchInfo();
}
foreach (var prefix in job.prefixes)
{
PatchFunctions.AddPrefix(patchInfo, instance.Id, prefix);
}
foreach (var postfix in job.postfixes)
{
PatchFunctions.AddPostfix(patchInfo, instance.Id, postfix);
}
foreach (var transpiler in job.transpilers)
{
PatchFunctions.AddTranspiler(patchInfo, instance.Id, transpiler);
}
foreach (var finalizer in job.finalizers)
{
PatchFunctions.AddFinalizer(patchInfo, instance.Id, finalizer);
}
replacement = PatchFunctions.UpdateWrapper(job.original, patchInfo);
HarmonySharedState.UpdatePatchInfo(job.original, patchInfo);
}
catch (Exception ex)
{
exception = ex;
}
}
}
RunMethod <HarmonyCleanup>(ref exception, job.original, exception);
if (exception != null)
{
ReportException(exception, job.original);
}
job.replacement = replacement;
}
/// <summary>Unpatches a specific patch</summary>
/// <param name="patch">The method of the patch</param>
/// <returns>A <see cref="PatchProcessor"/> for chaining calls</returns>
///
public PatchProcessor Unpatch(MethodInfo patch)
{
lock (locker)
{
var patchInfo = original.ToPatchInfo();
patchInfo.RemovePatch(patch);
var replacement = PatchFunctions.UpdateWrapper(original, patchInfo);
PatchManager.AddReplacementOriginal(original, replacement);
return(this);
}
}
static void OnCompileMethod(MethodBase method, IntPtr codeStart, ulong codeLen)
{
if (method == null)
{
return;
}
var info = GetPatchInfo(method);
if (info == null)
{
return;
}
PatchFunctions.UpdateRecompiledMethod(method, codeStart, info);
}
/// <summary>Unpatches a specific patch</summary>
/// <param name="patch">The method of the patch</param>
/// <returns>A <see cref="PatchProcessor"/> for chaining calls</returns>
///
public PatchProcessor Unpatch(MethodInfo patch)
{
lock (locker)
{
var patchInfo = HarmonySharedState.GetPatchInfo(original);
if (patchInfo == null)
{
patchInfo = new PatchInfo();
}
PatchFunctions.RemovePatch(patchInfo, patch);
_ = PatchFunctions.UpdateWrapper(original, patchInfo);
HarmonySharedState.UpdatePatchInfo(original, patchInfo);
return(this);
}
}
/// <summary>Unpatches the given patch</summary>
/// <param name="patch">The patch</param>
///
public void Unpatch(MethodInfo patch)
{
lock (locker)
{
foreach (var original in originals)
{
var patchInfo = HarmonySharedState.GetPatchInfo(original);
if (patchInfo == null)
{
patchInfo = new PatchInfo();
}
PatchFunctions.RemovePatch(patchInfo, patch);
PatchFunctions.UpdateWrapper(original, patchInfo, instance.Id);
HarmonySharedState.UpdatePatchInfo(original, patchInfo);
}
}
}
/// <summary>Patches a foreign method onto a stub method of yours and optionally applies transpilers during the process</summary>
/// <param name="original">The original method/constructor you want to duplicate</param>
/// <param name="standin">Your stub method as <see cref="HarmonyMethod"/> that will become the original. Needs to have the correct signature (either original or whatever your transpilers generates)</param>
/// <param name="transpiler">An optional transpiler as method that will be applied during the process</param>
/// <returns>The replacement method that was created to patch the stub method</returns>
///
public static MethodInfo ReversePatch(MethodBase original, HarmonyMethod standin, MethodInfo transpiler = null)
{
return(PatchFunctions.ReversePatch(standin, original, transpiler));
}
/// <summary>Sort patch methods by their priority rules</summary>
/// <param name="original">The original method</param>
/// <param name="patches">Patches to sort</param>
/// <returns>The sorted patch methods</returns>
///
public static List <MethodInfo> GetSortedPatchMethods(MethodBase original, Patch[] patches)
{
return(PatchFunctions.GetSortedPatchMethods(original, patches, false));
}
/// <summary>Returns the methods current list of code instructions after all existing transpilers have been applied</summary>
/// <param name="original">The original method/constructor</param>
/// <param name="generator">A new generator that now contains all local variables and labels contained in the result</param>
/// <param name="maxTranspilers">Apply only the first count of transpilers</param>
/// <returns>A list of <see cref="CodeInstruction"/></returns>
///
public static List <CodeInstruction> GetCurrentInstructions(MethodBase original, out ILGenerator generator, int maxTranspilers = int.MaxValue)
{
generator = CreateILGenerator(original);
return(PatchFunctions.ApplyTranspilers(original, generator, maxTranspilers).ToList());
}
/// <summary>Returns the methods unmodified list of code instructions</summary>
/// <param name="original">The original method/constructor</param>
/// <param name="generator">A new generator that now contains all local variables and labels contained in the result</param>
/// <returns>A list containing all the original <see cref="CodeInstruction"/></returns>
///
public static List <CodeInstruction> GetOriginalInstructions(MethodBase original, out ILGenerator generator)
{
generator = CreateILGenerator(original);
return(PatchFunctions.ApplyTranspilers(original, generator).ToList());
}