internal static string GetTypeName(Il2CppMetadata metadata, PE.PE cppAssembly, Il2CppTypeDefinition typeDef)
{
var ret = String.Empty;
if (typeDef.declaringTypeIndex != -1)
{
ret += GetTypeName(metadata, cppAssembly, cppAssembly.types[typeDef.declaringTypeIndex]) + ".";
}
ret += metadata.GetStringFromIndex(typeDef.nameIndex);
var names = new List <string>();
if (typeDef.genericContainerIndex >= 0)
{
var genericContainer = metadata.genericContainers[typeDef.genericContainerIndex];
for (int i = 0; i < genericContainer.type_argc; i++)
{
var genericParameterIndex = genericContainer.genericParameterStart + i;
var param = metadata.genericParameters[genericParameterIndex];
names.Add(metadata.GetStringFromIndex(param.nameIndex));
}
ret = ret.Replace($"`{genericContainer.type_argc}", "");
ret += $"<{String.Join(", ", names)}>";
}
return(ret);
}
public static TypeReference ImportTypeInto(MemberReference importInto, Il2CppType toImport, PE.PE theDll, Il2CppMetadata metadata)
{
var moduleDefinition = importInto.Module;
switch (toImport.type)
{
case Il2CppTypeEnum.IL2CPP_TYPE_OBJECT:
return(moduleDefinition.ImportReference(typeof(object)));
case Il2CppTypeEnum.IL2CPP_TYPE_VOID:
return(moduleDefinition.ImportReference(typeof(void)));
case Il2CppTypeEnum.IL2CPP_TYPE_BOOLEAN:
return(moduleDefinition.ImportReference(typeof(bool)));
case Il2CppTypeEnum.IL2CPP_TYPE_CHAR:
return(moduleDefinition.ImportReference(typeof(char)));
case Il2CppTypeEnum.IL2CPP_TYPE_I1:
return(moduleDefinition.ImportReference(typeof(sbyte)));
case Il2CppTypeEnum.IL2CPP_TYPE_U1:
return(moduleDefinition.ImportReference(typeof(byte)));
case Il2CppTypeEnum.IL2CPP_TYPE_I2:
return(moduleDefinition.ImportReference(typeof(short)));
case Il2CppTypeEnum.IL2CPP_TYPE_U2:
return(moduleDefinition.ImportReference(typeof(ushort)));
case Il2CppTypeEnum.IL2CPP_TYPE_I4:
return(moduleDefinition.ImportReference(typeof(int)));
case Il2CppTypeEnum.IL2CPP_TYPE_U4:
return(moduleDefinition.ImportReference(typeof(uint)));
case Il2CppTypeEnum.IL2CPP_TYPE_I:
return(moduleDefinition.ImportReference(typeof(IntPtr)));
case Il2CppTypeEnum.IL2CPP_TYPE_U:
return(moduleDefinition.ImportReference(typeof(UIntPtr)));
case Il2CppTypeEnum.IL2CPP_TYPE_I8:
return(moduleDefinition.ImportReference(typeof(long)));
case Il2CppTypeEnum.IL2CPP_TYPE_U8:
return(moduleDefinition.ImportReference(typeof(ulong)));
case Il2CppTypeEnum.IL2CPP_TYPE_R4:
return(moduleDefinition.ImportReference(typeof(float)));
case Il2CppTypeEnum.IL2CPP_TYPE_R8:
return(moduleDefinition.ImportReference(typeof(double)));
case Il2CppTypeEnum.IL2CPP_TYPE_STRING:
return(moduleDefinition.ImportReference(typeof(string)));
case Il2CppTypeEnum.IL2CPP_TYPE_TYPEDBYREF:
return(moduleDefinition.ImportReference(typeof(TypedReference)));
case Il2CppTypeEnum.IL2CPP_TYPE_CLASS:
case Il2CppTypeEnum.IL2CPP_TYPE_VALUETYPE:
{
var typeDefinition = SharedState.TypeDefsByIndex[toImport.data.classIndex];
return(moduleDefinition.ImportReference(typeDefinition));
}
case Il2CppTypeEnum.IL2CPP_TYPE_ARRAY:
{
var arrayType = theDll.ReadClassAtVirtualAddress <Il2CppArrayType>(toImport.data.array);
var oriType = theDll.GetIl2CppType(arrayType.etype);
return(new ArrayType(ImportTypeInto(importInto, oriType, theDll, metadata), arrayType.rank));
}
case Il2CppTypeEnum.IL2CPP_TYPE_GENERICINST:
{
var genericClass =
theDll.ReadClassAtVirtualAddress <Il2CppGenericClass>(toImport.data.generic_class);
var typeDefinition = SharedState.TypeDefsByIndex[genericClass.typeDefinitionIndex];
var genericInstanceType = new GenericInstanceType(moduleDefinition.ImportReference(typeDefinition));
var genericInst =
theDll.ReadClassAtVirtualAddress <Il2CppGenericInst>(genericClass.context.class_inst);
var pointers = theDll.GetPointers(genericInst.type_argv, (long)genericInst.type_argc);
foreach (var pointer in pointers)
{
var oriType = theDll.GetIl2CppType(pointer);
genericInstanceType.GenericArguments.Add(ImportTypeInto(importInto, oriType, theDll,
metadata));
}
return(genericInstanceType);
}
case Il2CppTypeEnum.IL2CPP_TYPE_SZARRAY:
{
var oriType = theDll.GetIl2CppType(toImport.data.type);
return(new ArrayType(ImportTypeInto(importInto, oriType, theDll, metadata)));
}
case Il2CppTypeEnum.IL2CPP_TYPE_VAR:
{
if (SharedState.GenericParamsByIndex.TryGetValue(toImport.data.genericParameterIndex,
out var genericParameter))
{
return(genericParameter);
}
var param = metadata.genericParameters[toImport.data.genericParameterIndex];
var genericName = metadata.GetStringFromIndex(param.nameIndex);
if (importInto is MethodDefinition methodDefinition)
{
genericParameter = new GenericParameter(genericName, methodDefinition.DeclaringType);
methodDefinition.DeclaringType.GenericParameters.Add(genericParameter);
SharedState.GenericParamsByIndex.Add(toImport.data.genericParameterIndex, genericParameter);
return(genericParameter);
}
var typeDefinition = (TypeDefinition)importInto;
genericParameter = new GenericParameter(genericName, typeDefinition);
typeDefinition.GenericParameters.Add(genericParameter);
SharedState.GenericParamsByIndex.Add(toImport.data.genericParameterIndex, genericParameter);
return(genericParameter);
}
case Il2CppTypeEnum.IL2CPP_TYPE_MVAR:
{
if (SharedState.GenericParamsByIndex.TryGetValue(toImport.data.genericParameterIndex,
out var genericParameter))
{
return(genericParameter);
}
var methodDefinition = (MethodDefinition)importInto;
var param = metadata.genericParameters[toImport.data.genericParameterIndex];
var genericName = metadata.GetStringFromIndex(param.nameIndex);
genericParameter = new GenericParameter(genericName, methodDefinition);
methodDefinition.GenericParameters.Add(genericParameter);
SharedState.GenericParamsByIndex.Add(toImport.data.genericParameterIndex, genericParameter);
return(genericParameter);
}
case Il2CppTypeEnum.IL2CPP_TYPE_PTR:
{
var oriType = theDll.GetIl2CppType(toImport.data.type);
return(new PointerType(ImportTypeInto(importInto, oriType, theDll, metadata)));
}
default:
return(moduleDefinition.ImportReference(typeof(object)));
}
}
internal static string GetTypeName(Il2CppMetadata metadata, PE.PE cppAssembly, Il2CppType type, bool fullName = false)
{
string ret;
switch (type.type)
{
case Il2CppTypeEnum.IL2CPP_TYPE_CLASS:
case Il2CppTypeEnum.IL2CPP_TYPE_VALUETYPE:
{
var typeDef = metadata.typeDefs[type.data.classIndex];
ret = String.Empty;
if (fullName)
{
ret = metadata.GetStringFromIndex(typeDef.namespaceIndex);
if (ret != String.Empty)
{
ret += ".";
}
}
ret += GetTypeName(metadata, cppAssembly, typeDef);
break;
}
case Il2CppTypeEnum.IL2CPP_TYPE_GENERICINST:
{
var genericClass = cppAssembly.ReadClassAtVirtualAddress <Il2CppGenericClass>(type.data.generic_class);
var typeDef = metadata.typeDefs[genericClass.typeDefinitionIndex];
ret = metadata.GetStringFromIndex(typeDef.nameIndex);
var genericInst = cppAssembly.ReadClassAtVirtualAddress <Il2CppGenericInst>(genericClass.context.class_inst);
ret = ret.Replace($"`{genericInst.type_argc}", "");
ret += GetGenericTypeParams(metadata, cppAssembly, genericInst);
break;
}
case Il2CppTypeEnum.IL2CPP_TYPE_VAR:
case Il2CppTypeEnum.IL2CPP_TYPE_MVAR:
{
var param = metadata.genericParameters[type.data.genericParameterIndex];
ret = metadata.GetStringFromIndex(param.nameIndex);
break;
}
case Il2CppTypeEnum.IL2CPP_TYPE_ARRAY:
{
var arrayType = cppAssembly.ReadClassAtVirtualAddress <Il2CppArrayType>(type.data.array);
var oriType = cppAssembly.GetIl2CppType(arrayType.etype);
ret = $"{GetTypeName(metadata, cppAssembly, oriType)}[{new string(',', arrayType.rank - 1)}]";
break;
}
case Il2CppTypeEnum.IL2CPP_TYPE_SZARRAY:
{
var oriType = cppAssembly.GetIl2CppType(type.data.type);
ret = $"{GetTypeName(metadata, cppAssembly, oriType)}[]";
break;
}
case Il2CppTypeEnum.IL2CPP_TYPE_PTR:
{
var oriType = cppAssembly.GetIl2CppType(type.data.type);
ret = $"{GetTypeName(metadata, cppAssembly, oriType)}*";
break;
}
default:
ret = TypeString[(int)type.type];
break;
}
return(ret);
}
internal static List <GlobalIdentifier> MapGlobalIdentifiers(Il2CppMetadata metadata, PE.PE cppAssembly)
{
//Classes
var ret = metadata.metadataUsageDic[1]
.Select(kvp => new { kvp, type = cppAssembly.types[kvp.Value] })
.Select(t => new GlobalIdentifier
{
Name = Utils.GetTypeName(metadata, cppAssembly, t.type, true),
Offset = cppAssembly.metadataUsages[t.kvp.Key],
IdentifierType = GlobalIdentifier.Type.TYPE
}).ToList();
//Idx 2 is exactly the same thing
ret.AddRange(metadata.metadataUsageDic[2]
.Select(kvp => new { kvp, type = cppAssembly.types[kvp.Value] })
.Select(t => new GlobalIdentifier
{
Name = Utils.GetTypeName(metadata, cppAssembly, t.type, true),
Offset = cppAssembly.metadataUsages[t.kvp.Key],
IdentifierType = GlobalIdentifier.Type.TYPE
})
);
//Methods is idx 3
//Don't @ me, i prefer LINQ to foreach loops.
//But that said this could be optimised to less t-ing
ret.AddRange(metadata.metadataUsageDic[3]
.Select(kvp => new { kvp, method = metadata.methodDefs[kvp.Value] })
.Select(t => new { t.kvp, t.method, type = metadata.typeDefs[t.method.declaringType] })
.Select(t => new { t.kvp, t.method, typeName = Utils.GetTypeName(metadata, cppAssembly, t.type) })
.Select(t => new { t.kvp, methodName = t.typeName + "." + metadata.GetStringFromIndex(t.method.nameIndex) + "()" })
.Select(t => new GlobalIdentifier
{
IdentifierType = GlobalIdentifier.Type.METHOD,
Name = t.methodName,
Offset = cppAssembly.metadataUsages[t.kvp.Key]
})
);
//Fields is idx 4
ret.AddRange(metadata.metadataUsageDic[4]
.Select(kvp => new { kvp, fieldRef = metadata.fieldRefs[kvp.Value] })
.Select(t => new { t.kvp, t.fieldRef, type = cppAssembly.types[t.fieldRef.typeIndex] })
.Select(t => new { t.type, t.kvp, t.fieldRef, typeDef = metadata.typeDefs[t.type.data.classIndex] })
.Select(t => new { t.type, t.kvp, fieldDef = metadata.fieldDefs[t.typeDef.firstFieldIdx + t.fieldRef.fieldIndex] })
.Select(t => new { t.kvp, fieldName = Utils.GetTypeName(metadata, cppAssembly, t.type, true) + "." + metadata.GetStringFromIndex(t.fieldDef.nameIndex) })
.Select(t => new GlobalIdentifier
{
IdentifierType = GlobalIdentifier.Type.FIELD,
Name = t.fieldName,
Offset = cppAssembly.metadataUsages[t.kvp.Key]
})
);
//Literals
ret.AddRange(metadata.metadataUsageDic[5]
.Select(kvp => new GlobalIdentifier
{
IdentifierType = GlobalIdentifier.Type.LITERAL,
Offset = cppAssembly.metadataUsages[kvp.Key],
Name = $"{metadata.GetStringLiteralFromIndex(kvp.Value)}"
})
);
foreach (var kvp in metadata.metadataUsageDic[6]) //kIl2CppMetadataUsageMethodRef
{
var methodSpec = cppAssembly.methodSpecs[kvp.Value];
var methodDef = metadata.methodDefs[methodSpec.methodDefinitionIndex];
var typeDef = metadata.typeDefs[methodDef.declaringType];
var typeName = Utils.GetTypeName(metadata, cppAssembly, typeDef);
if (methodSpec.classIndexIndex != -1)
{
var classInst = cppAssembly.genericInsts[methodSpec.classIndexIndex];
typeName += Utils.GetGenericTypeParams(metadata, cppAssembly, classInst);
}
var methodName = typeName + "." + metadata.GetStringFromIndex(methodDef.nameIndex) + "()";
if (methodSpec.methodIndexIndex != -1)
{
var methodInst = cppAssembly.genericInsts[methodSpec.methodIndexIndex];
methodName += Utils.GetGenericTypeParams(metadata, cppAssembly, methodInst);
}
ret.Add(new GlobalIdentifier
{
Name = methodName,
IdentifierType = GlobalIdentifier.Type.METHOD,
Offset = cppAssembly.metadataUsages[kvp.Key]
});
}
return(ret);
}
/// <summary>
/// Creates all the Assemblies defined in the provided metadata, along with (stub) definitions of all the types contained therein, and registers them with the resolver.
/// </summary>
/// <param name="metadata">The Il2Cpp metadata to extract assemblies from</param>
/// <param name="resolver">The Assembly Resolver that assemblies are registered with, used to ensure assemblies can cross reference.</param>
/// <param name="moduleParams">Configuration for the module creation.</param>
/// <returns>A list of Mono.Cecil Assemblies, containing empty type definitions for each defined type.</returns>
internal static List <AssemblyDefinition> CreateAssemblies(Il2CppMetadata metadata, RegistryAssemblyResolver resolver, ModuleParameters moduleParams)
{
var assemblies = new List <AssemblyDefinition>();
foreach (var assemblyDefinition in metadata.assemblyDefinitions)
{
//Get the name of the assembly (= the name of the DLL without the file extension)
var assemblyNameString = metadata.GetStringFromIndex(assemblyDefinition.nameIndex).Replace(".dll", "");
//Build a Mono.Cecil assembly name from this name
var asmName = new AssemblyNameDefinition(assemblyNameString, new Version("0.0.0.0"));
Console.Write($"\t\t{assemblyNameString}...");
//Create an empty assembly and register it
var assembly = AssemblyDefinition.CreateAssembly(asmName, metadata.GetStringFromIndex(assemblyDefinition.nameIndex), moduleParams);
resolver.Register(assembly);
assemblies.Add(assembly);
//Ensure it really _is_ empty
var mainModule = assembly.MainModule;
mainModule.Types.Clear();
//Find the end index of the types belonging to this assembly (as they're all in one huge list in the metadata)
var end = assemblyDefinition.firstTypeIndex + assemblyDefinition.typeCount;
for (var defNumber = assemblyDefinition.firstTypeIndex; defNumber < end; defNumber++)
{
//Get the metadata type info, its namespace, and name.
var type = metadata.typeDefs[defNumber];
var ns = metadata.GetStringFromIndex(type.namespaceIndex);
var name = metadata.GetStringFromIndex(type.nameIndex);
TypeDefinition definition;
if (type.declaringTypeIndex != -1)
{
//This is a type declared within another (inner class/type)
definition = SharedState.TypeDefsByIndex[defNumber];
}
else
{
//This is a new type so ensure it's registered
definition = new TypeDefinition(ns, name, (TypeAttributes)type.flags);
mainModule.Types.Add(definition);
SharedState.TypeDefsByIndex.Add(defNumber, definition);
}
//Ensure we include all inner types within this type.
for (var nestedNumber = 0; nestedNumber < type.nested_type_count; nestedNumber++)
{
//These are stored in a separate field in the metadata.
var nestedIndex = metadata.nestedTypeIndices[type.nestedTypesStart + nestedNumber];
var nested = metadata.typeDefs[nestedIndex];
//Create it and register.
var nestedDef = new TypeDefinition(metadata.GetStringFromIndex(nested.namespaceIndex),
metadata.GetStringFromIndex(nested.nameIndex), (TypeAttributes)nested.flags);
definition.NestedTypes.Add(nestedDef);
SharedState.TypeDefsByIndex.Add(nestedIndex, nestedDef);
}
}
Console.WriteLine("OK");
}
return(assemblies);
}
private static List <CppMethodData> ProcessTypeContents(Il2CppMetadata metadata, PE.PE cppAssembly, Il2CppTypeDefinition cppTypeDefinition, TypeDefinition ilTypeDefinition)
{
var typeMetaText = new StringBuilder();
typeMetaText.Append($"Type: {ilTypeDefinition.FullName}:")
.Append($"\n\tBase Class: \n\t\t{ilTypeDefinition.BaseType}\n")
.Append("\n\tInterfaces:\n");
foreach (var iface in ilTypeDefinition.Interfaces)
{
typeMetaText.Append($"\t\t{iface.InterfaceType.FullName}\n");
}
//field
var fields = new List <FieldInType>();
var baseFields = new List <FieldDefinition>();
var current = ilTypeDefinition;
while (current.BaseType != null)
{
var targetName = current.BaseType.FullName;
if (targetName.Contains("<")) // types with generic parameters (Type'1<T>) are stored as Type'1, so I just removed the part that causes trouble and called it a day
{
targetName = targetName.Substring(0, targetName.IndexOf("<"));
}
current = SharedState.AllTypeDefinitions.Find(t => t.FullName == targetName);
if (current == null)
{
typeMetaText.Append("WARN: Type " + targetName + " is not defined yet\n");
break;
}
baseFields.InsertRange(0, current.Fields.Where(f => !f.IsStatic)); // each loop we go one inheritage level deeper, so these "new" fields should be inserted before the previous ones
}
//Handle base fields
var fieldOffset = baseFields.Aggregate((ulong)(ilTypeDefinition.MetadataType == MetadataType.Class ? 0x10 : 0x0), (currentOffset, baseField) => HandleField(baseField.FieldType, currentOffset, baseField.Name, baseField, ref fields, typeMetaText));
var lastFieldIdx = cppTypeDefinition.firstFieldIdx + cppTypeDefinition.field_count;
for (var fieldIdx = cppTypeDefinition.firstFieldIdx; fieldIdx < lastFieldIdx; ++fieldIdx)
{
var fieldDef = metadata.fieldDefs[fieldIdx];
var fieldType = cppAssembly.types[fieldDef.typeIndex];
var fieldName = metadata.GetStringFromIndex(fieldDef.nameIndex);
var fieldTypeRef = Utils.ImportTypeInto(ilTypeDefinition, fieldType, cppAssembly, metadata);
var fieldDefinition = new FieldDefinition(fieldName, (FieldAttributes)fieldType.attrs, fieldTypeRef);
ilTypeDefinition.Fields.Add(fieldDefinition);
//Field default values
if (fieldDefinition.HasDefault)
{
var fieldDefault = metadata.GetFieldDefaultValueFromIndex(fieldIdx);
if (fieldDefault != null && fieldDefault.dataIndex != -1)
{
fieldDefinition.Constant = Utils.GetDefaultValue(fieldDefault.dataIndex,
fieldDefault.typeIndex, metadata, cppAssembly);
}
}
if (!fieldDefinition.IsStatic)
{
fieldOffset = HandleField(fieldTypeRef, fieldOffset, fieldName, fieldDefinition, ref fields, typeMetaText);
}
}
fields.Sort(); //By offset
SharedState.FieldsByType[ilTypeDefinition] = fields;
//Methods
var lastMethodId = cppTypeDefinition.firstMethodId + cppTypeDefinition.method_count;
var typeMethods = new List <CppMethodData>();
Il2CppGenericContainer genericContainer;
for (var methodId = cppTypeDefinition.firstMethodId; methodId < lastMethodId; ++methodId)
{
var methodDef = metadata.methodDefs[methodId];
var methodReturnType = cppAssembly.types[methodDef.returnType];
var methodName = metadata.GetStringFromIndex(methodDef.nameIndex);
var methodDefinition = new MethodDefinition(methodName, (MethodAttributes)methodDef.flags,
ilTypeDefinition.Module.ImportReference(typeof(void)));
//TODO: For Unity 2019 we'll need to fix the imageindex param from 0 to the actual index
var offsetInRam = cppAssembly.GetMethodPointer(methodDef.methodIndex, methodId, 0, methodDef.token);
long offsetInFile = offsetInRam == 0 ? 0 : cppAssembly.MapVirtualAddressToRaw(offsetInRam);
typeMetaText.Append($"\n\tMethod: {methodName}:\n")
.Append($"\t\tFile Offset 0x{offsetInFile:X8}\n")
.Append($"\t\tRam Offset 0x{offsetInRam:x8}\n")
.Append($"\t\tVirtual Method Slot: {methodDef.slot}\n");
var bytes = new List <byte>();
var offset = offsetInFile;
while (true)
{
var b = cppAssembly.raw[offset];
if (b == 0xC3 && cppAssembly.raw[offset + 1] == 0xCC)
{
break;
}
if (b == 0xCC && bytes.Count > 0 && (bytes.Last() == 0xcc || bytes.Last() == 0xc3))
{
break;
}
bytes.Add(b);
offset++;
}
typeMetaText.Append($"\t\tMethod Length: {bytes.Count} bytes\n");
typeMethods.Add(new CppMethodData
{
MethodName = methodName,
MethodId = methodId,
MethodBytes = bytes.ToArray(),
MethodOffsetRam = offsetInRam
});
ilTypeDefinition.Methods.Add(methodDefinition);
methodDefinition.ReturnType = Utils.ImportTypeInto(methodDefinition, methodReturnType, cppAssembly, metadata);
if (methodDefinition.HasBody && ilTypeDefinition.BaseType?.FullName != "System.MulticastDelegate")
{
var ilprocessor = methodDefinition.Body.GetILProcessor();
ilprocessor.Append(ilprocessor.Create(OpCodes.Nop));
}
SharedState.MethodsByIndex.Add(methodId, methodDefinition);
//Method Params
for (var paramIdx = 0; paramIdx < methodDef.parameterCount; ++paramIdx)
{
var parameterDef = metadata.parameterDefs[methodDef.parameterStart + paramIdx];
var parameterName = metadata.GetStringFromIndex(parameterDef.nameIndex);
var parameterType = cppAssembly.types[parameterDef.typeIndex];
var parameterTypeRef = Utils.ImportTypeInto(methodDefinition, parameterType, cppAssembly, metadata);
var parameterDefinition = new ParameterDefinition(parameterName, (ParameterAttributes)parameterType.attrs, parameterTypeRef);
methodDefinition.Parameters.Add(parameterDefinition);
//Default values for params
if (parameterDefinition.HasDefault)
{
var parameterDefault = metadata.GetParameterDefaultValueFromIndex(methodDef.parameterStart + paramIdx);
if (parameterDefault != null && parameterDefault.dataIndex != -1)
{
parameterDefinition.Constant = Utils.GetDefaultValue(parameterDefault.dataIndex, parameterDefault.typeIndex, metadata, cppAssembly);
}
}
typeMetaText.Append($"\n\t\tParameter {paramIdx}:\n")
.Append($"\t\t\tName: {parameterName}\n")
.Append($"\t\t\tType: {(parameterTypeRef.Namespace == "" ? "<None>" : parameterTypeRef.Namespace)}.{parameterTypeRef.Name}\n")
.Append($"\t\t\tDefault Value: {parameterDefinition.Constant}");
}
if (methodDef.genericContainerIndex >= 0)
{
genericContainer = metadata.genericContainers[methodDef.genericContainerIndex];
if (genericContainer.type_argc > methodDefinition.GenericParameters.Count)
{
for (var j = 0; j < genericContainer.type_argc; j++)
{
var genericParameterIndex = genericContainer.genericParameterStart + j;
var param = metadata.genericParameters[genericParameterIndex];
var genericName = metadata.GetStringFromIndex(param.nameIndex);
if (!SharedState.GenericParamsByIndex.TryGetValue(genericParameterIndex,
out var genericParameter))
{
genericParameter = new GenericParameter(genericName, methodDefinition);
methodDefinition.GenericParameters.Add(genericParameter);
SharedState.GenericParamsByIndex.Add(genericParameterIndex, genericParameter);
}
else
{
if (!methodDefinition.GenericParameters.Contains(genericParameter))
{
methodDefinition.GenericParameters.Add(genericParameter);
}
}
}
}
}
if (methodDef.slot < ushort.MaxValue)
{
SharedState.VirtualMethodsBySlot[methodDef.slot] = methodDefinition;
}
SharedState.MethodsByAddress[offsetInRam] = methodDefinition;
}
//Properties
var lastPropertyId = cppTypeDefinition.firstPropertyId + cppTypeDefinition.propertyCount;
for (var propertyId = cppTypeDefinition.firstPropertyId; propertyId < lastPropertyId; ++propertyId)
{
var propertyDef = metadata.propertyDefs[propertyId];
var propertyName = metadata.GetStringFromIndex(propertyDef.nameIndex);
TypeReference propertyType = null;
MethodDefinition getter = null;
MethodDefinition setter = null;
if (propertyDef.get >= 0)
{
getter = SharedState.MethodsByIndex[cppTypeDefinition.firstMethodId + propertyDef.get];
propertyType = getter.ReturnType;
}
if (propertyDef.set >= 0)
{
setter = SharedState.MethodsByIndex[cppTypeDefinition.firstMethodId + propertyDef.set];
if (propertyType == null)
{
propertyType = setter.Parameters[0].ParameterType;
}
}
var propertyDefinition = new PropertyDefinition(propertyName, (PropertyAttributes)propertyDef.attrs, propertyType)
{
GetMethod = getter,
SetMethod = setter
};
ilTypeDefinition.Properties.Add(propertyDefinition);
}
//Events
var lastEventId = cppTypeDefinition.firstEventId + cppTypeDefinition.eventCount;
for (var eventId = cppTypeDefinition.firstEventId; eventId < lastEventId; ++eventId)
{
var eventDef = metadata.eventDefs[eventId];
var eventName = metadata.GetStringFromIndex(eventDef.nameIndex);
var eventType = cppAssembly.types[eventDef.typeIndex];
var eventTypeRef = Utils.ImportTypeInto(ilTypeDefinition, eventType, cppAssembly, metadata);
var eventDefinition = new EventDefinition(eventName, (EventAttributes)eventType.attrs, eventTypeRef);
if (eventDef.add >= 0)
{
eventDefinition.AddMethod = SharedState.MethodsByIndex[cppTypeDefinition.firstMethodId + eventDef.add];
}
if (eventDef.remove >= 0)
{
eventDefinition.RemoveMethod = SharedState.MethodsByIndex[cppTypeDefinition.firstMethodId + eventDef.remove];
}
if (eventDef.raise >= 0)
{
eventDefinition.InvokeMethod = SharedState.MethodsByIndex[cppTypeDefinition.firstMethodId + eventDef.raise];
}
ilTypeDefinition.Events.Add(eventDefinition);
}
File.WriteAllText(Path.Combine(Path.GetFullPath("cpp2il_out"), "types", ilTypeDefinition.Module.Assembly.Name.Name, ilTypeDefinition.Name.Replace("<", "_").Replace(">", "_") + "_metadata.txt"), typeMetaText.ToString());
if (cppTypeDefinition.genericContainerIndex < 0)
{
return(typeMethods); //Finished processing if not generic
}
genericContainer = metadata.genericContainers[cppTypeDefinition.genericContainerIndex];
if (genericContainer.type_argc <= ilTypeDefinition.GenericParameters.Count)
{
return(typeMethods); //Finished processing
}
for (var i = 0; i < genericContainer.type_argc; i++)
{
var genericParameterIndex = genericContainer.genericParameterStart + i;
var param = metadata.genericParameters[genericParameterIndex];
var genericName = metadata.GetStringFromIndex(param.nameIndex);
if (!SharedState.GenericParamsByIndex.TryGetValue(genericParameterIndex, out var genericParameter))
{
genericParameter = new GenericParameter(genericName, ilTypeDefinition);
ilTypeDefinition.GenericParameters.Add(genericParameter);
SharedState.GenericParamsByIndex.Add(genericParameterIndex, genericParameter);
}
else
{
if (ilTypeDefinition.GenericParameters.Contains(genericParameter))
{
continue;
}
ilTypeDefinition.GenericParameters.Add(genericParameter);
}
}
return(typeMethods);
}
/// <summary>
/// Creates all the Assemblies defined in the provided metadata, along with (stub) definitions of all the types contained therein, and registers them with the resolver.
/// </summary>
/// <param name="metadata">The Il2Cpp metadata to extract assemblies from</param>
/// <param name="resolver">The Assembly Resolver that assemblies are registered with, used to ensure assemblies can cross reference.</param>
/// <param name="moduleParams">Configuration for the module creation.</param>
/// <returns>A list of Mono.Cecil Assemblies, containing empty type definitions for each defined type.</returns>
internal static List <AssemblyDefinition> CreateAssemblies(Il2CppMetadata metadata, RegistryAssemblyResolver resolver, ModuleParameters moduleParams)
{
var assemblies = new List <AssemblyDefinition>();
foreach (var assemblyDefinition in metadata.imageDefinitions)
{
//Get the name of the assembly (= the name of the DLL without the file extension)
var assemblyNameString = metadata.GetStringFromIndex(assemblyDefinition.nameIndex).Replace(".dll", "");
//Build a Mono.Cecil assembly name from this name
var asmName = new AssemblyNameDefinition(assemblyNameString, new Version("0.0.0.0"));
Console.Write($"\t\t{assemblyNameString}...");
//Create an empty assembly and register it
var assembly = AssemblyDefinition.CreateAssembly(asmName, metadata.GetStringFromIndex(assemblyDefinition.nameIndex), moduleParams);
resolver.Register(assembly);
assemblies.Add(assembly);
//Ensure it really _is_ empty
var mainModule = assembly.MainModule;
mainModule.Types.Clear();
//Find the end index of the types belonging to this assembly (as they're all in one huge list in the metadata)
var end = assemblyDefinition.firstTypeIndex + assemblyDefinition.typeCount;
for (var defNumber = assemblyDefinition.firstTypeIndex; defNumber < end; defNumber++)
{
//Get the metadata type info, its namespace, and name.
var type = metadata.typeDefs[defNumber];
var ns = metadata.GetStringFromIndex(type.namespaceIndex);
var name = metadata.GetStringFromIndex(type.nameIndex);
TypeDefinition?definition = null;
if (type.declaringTypeIndex != -1)
{
//This is a type declared within another (inner class/type)
//Have we already declared this type due to handling its parent?
SharedState.TypeDefsByIndex.TryGetValue(defNumber, out definition);
}
if (definition == null)
{
//This is a new type (including nested type with parent not defined yet) so ensure it's registered
definition = new TypeDefinition(ns, name, (TypeAttributes)type.flags);
if (ns == "System" && name == "String")
{
typeof(TypeReference).GetField("etype", BindingFlags.NonPublic | BindingFlags.Instance).SetValue(definition, (byte)0x0e); //mark as string
}
mainModule.Types.Add(definition);
SharedState.AllTypeDefinitions.Add(definition);
SharedState.TypeDefsByIndex.Add(defNumber, definition);
}
//Ensure we include all inner types within this type.
for (var nestedNumber = 0; nestedNumber < type.nested_type_count; nestedNumber++)
{
//These are stored in a separate field in the metadata.
var nestedIndex = metadata.nestedTypeIndices[type.nestedTypesStart + nestedNumber];
var nested = metadata.typeDefs[nestedIndex];
if (SharedState.TypeDefsByIndex.TryGetValue(nestedIndex, out var alreadyMadeNestedType))
{
//Type has already been defined (can be out-of-order in v27+) so we just add it.
definition.NestedTypes.Add(alreadyMadeNestedType);
}
else
{
//Create it and register.
var nestedDef = new TypeDefinition(metadata.GetStringFromIndex(nested.namespaceIndex),
metadata.GetStringFromIndex(nested.nameIndex), (TypeAttributes)nested.flags);
definition.NestedTypes.Add(nestedDef);
SharedState.AllTypeDefinitions.Add(nestedDef);
SharedState.TypeDefsByIndex.Add(nestedIndex, nestedDef);
}
}
}
Console.WriteLine("OK");
}
return(assemblies);
}