public PlusSearch(PE.PE pe, int methodCount, int typeDefinitionsCount, long maxMetadataUsages)
{
_pe = pe;
this.methodCount = methodCount;
this.typeDefinitionsCount = typeDefinitionsCount;
this.maxMetadataUsages = maxMetadataUsages;
}
internal static void MapGlobalIdentifiers(Il2CppMetadata metadata, PE.PE cppAssembly)
{
//Type references
TypeRefs = metadata.metadataUsageDic[1]
.Select(kvp => new { kvp, type = cppAssembly.types[kvp.Value] })
.Select(t => new GlobalIdentifier
{
Name = LibCpp2ILUtils.GetTypeName(metadata, cppAssembly, t.type, true),
Value = LibCpp2ILUtils.GetTypeReflectionData(t.type) !,
Offset = cppAssembly.metadataUsages[t.kvp.Key],
IdentifierType = GlobalIdentifier.Type.TYPEREF
}).ToList();
internal static string GetGenericTypeParamNames(Il2CppMetadata metadata, PE.PE cppAssembly, Il2CppGenericInst genericInst)
{
var typeNames = new List <string>();
var pointers = cppAssembly.ReadClassArrayAtVirtualAddress <ulong>(genericInst.pointerStart, (long)genericInst.pointerCount);
for (uint i = 0; i < genericInst.pointerCount; ++i)
{
var oriType = cppAssembly.GetIl2CppTypeFromPointer(pointers[i]);
typeNames.Add(GetTypeName(metadata, cppAssembly, oriType));
}
return($"<{string.Join(", ", typeNames)}>");
}
internal static string GetTypeName(Il2CppMetadata metadata, PE.PE cppAssembly, Il2CppTypeDefinition typeDef, bool fullName = false)
{
var ret = string.Empty;
if (fullName)
{
ret = typeDef.Namespace;
if (ret != string.Empty)
{
ret += ".";
}
}
if (typeDef.declaringTypeIndex != -1)
{
ret += GetTypeName(metadata, cppAssembly, cppAssembly.types[typeDef.declaringTypeIndex]) + ".";
}
ret += metadata.GetStringFromIndex(typeDef.nameIndex);
var names = new List <string>();
if (typeDef.genericContainerIndex < 0)
{
return(ret);
}
var genericContainer = metadata.genericContainers[typeDef.genericContainerIndex];
for (var i = 0; i < genericContainer.type_argc; i++)
{
var genericParameterIndex = genericContainer.genericParameterStart + i;
var param = metadata.genericParameters[genericParameterIndex];
names.Add(metadata.GetStringFromIndex(param.nameIndex));
}
ret = ret.Replace($"`{genericContainer.type_argc}", "");
ret += $"<{string.Join(", ", names)}>";
return(ret);
}
internal static object?GetDefaultValue(int dataIndex, int typeIndex, Il2CppMetadata metadata, PE.PE theDll)
{
var pointer = metadata.GetDefaultValueFromIndex(dataIndex);
if (pointer <= 0)
{
return(null);
}
var defaultValueType = theDll.types[typeIndex];
metadata.Position = pointer;
switch (defaultValueType.type)
{
case Il2CppTypeEnum.IL2CPP_TYPE_BOOLEAN:
return(metadata.ReadBoolean());
case Il2CppTypeEnum.IL2CPP_TYPE_U1:
return(metadata.ReadByte());
case Il2CppTypeEnum.IL2CPP_TYPE_I1:
return(metadata.ReadSByte());
case Il2CppTypeEnum.IL2CPP_TYPE_CHAR:
return(BitConverter.ToChar(metadata.ReadBytes(2), 0));
case Il2CppTypeEnum.IL2CPP_TYPE_U2:
return(metadata.ReadUInt16());
case Il2CppTypeEnum.IL2CPP_TYPE_I2:
return(metadata.ReadInt16());
case Il2CppTypeEnum.IL2CPP_TYPE_U4:
return(metadata.ReadUInt32());
case Il2CppTypeEnum.IL2CPP_TYPE_I4:
return(metadata.ReadInt32());
case Il2CppTypeEnum.IL2CPP_TYPE_U8:
return(metadata.ReadUInt64());
case Il2CppTypeEnum.IL2CPP_TYPE_I8:
return(metadata.ReadInt64());
case Il2CppTypeEnum.IL2CPP_TYPE_R4:
return(metadata.ReadSingle());
case Il2CppTypeEnum.IL2CPP_TYPE_R8:
return(metadata.ReadDouble());
case Il2CppTypeEnum.IL2CPP_TYPE_STRING:
var len = metadata.ReadInt32();
return(Encoding.UTF8.GetString(metadata.ReadBytes(len)));
default:
return(null);
}
}
public 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;
ret += GetTypeName(metadata, cppAssembly, typeDef, fullName);
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.pointerCount}", "");
ret += GetGenericTypeParamNames(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.GetIl2CppTypeFromPointer(arrayType.etype);
ret = $"{GetTypeName(metadata, cppAssembly, oriType)}[{new string(',', arrayType.rank - 1)}]";
break;
}
case Il2CppTypeEnum.IL2CPP_TYPE_SZARRAY:
{
var oriType = cppAssembly.GetIl2CppTypeFromPointer(type.data.type);
ret = $"{GetTypeName(metadata, cppAssembly, oriType)}[]";
break;
}
case Il2CppTypeEnum.IL2CPP_TYPE_PTR:
{
var oriType = cppAssembly.GetIl2CppTypeFromPointer(type.data.type);
ret = $"{GetTypeName(metadata, cppAssembly, oriType)}*";
break;
}
default:
ret = TypeString[(int)type.type];
break;
}
return(ret);
}
