mirror of https://github.com/Xpl0itR/protodec.git
PoC using dev branch of LibCpp2Il
This commit is contained in:
parent
e94fecce66
commit
764318aca2
GPG Key ID:
91798184109676AD
17
README.md
17
README.md
|
|
@ -1,13 +1,19 @@
|
|||
protodec
|
||||
========
|
||||
A tool to decompile protobuf classes compiled by [protoc](https://github.com/protocolbuffers/protobuf), from CIL assemblies back into .proto definitions.
|
||||
A tool to decompile protobuf classes compiled by [protoc](https://github.com/protocolbuffers/protobuf), from il2cpp compiled CIL assemblies back into .proto definitions.
|
||||
|
||||
This branch was created as a proof-of-concept using [the development branch of LibCpp2Il](https://github.com/SamboyCoding/Cpp2IL/tree/development/LibCpp2IL) to parse the game assembly and metadata directly, without the intermediate step of generating dummy DLLs.
|
||||
|
||||
I offer no guarantees that this branch functions 1:1 with master, it may explode.
|
||||
|
||||
Usage
|
||||
-----
|
||||
```
|
||||
Usage: protodec(.exe) <target_assembly_path> <out_path> [options]
|
||||
Usage: protodec(.exe) <game_assembly_path> <global_metadata_path> <unity_version> <out_path> [options]
|
||||
Arguments:
|
||||
target_assembly_path Either the path to the target assembly or a directory of assemblies, all of which be parsed.
|
||||
game_assembly_path The path to the game assembly DLL.
|
||||
global_metadata_path The path to the global-metadata.dat file.
|
||||
unity_version The version of Unity which was used to create the metadata file or alternatively, the path to the globalgamemanagers or the data.unity3d file.
|
||||
out_path An existing directory to output into individual files, otherwise output to a single file.
|
||||
Options:
|
||||
--debug Drops the minimum log level to Debug.
|
||||
|
|
@ -22,8 +28,9 @@ Limitations
|
|||
-----------
|
||||
- Integers are assumed to be (u)int32/64 as CIL doesn't differentiate between them and sint32/64 and (s)fixed32/64.
|
||||
- Package names are not preserved in protobuf compilation so naturally we cannot recover them during decompilation, which may result in naming conflicts.
|
||||
- When decompiling from [Il2CppDumper](https://github.com/Perfare/Il2CppDumper) DummyDLLs
|
||||
- The `Name` parameter of `OriginalNameAttribute` is not dumped. In this case, the CIL enum field names are used after conforming them to protobuf conventions
|
||||
- Due to the development branch of Cpp2Il not yet recovering method bodies, when parsing an Il2Cpp assembly older than metadata version 29
|
||||
- The `Name` parameter of `OriginalNameAttribute` is not parsed. In this case, the CIL enum field names are used after conforming them to protobuf conventions.
|
||||
- The `Tool` parameter of `GeneratedCodeAttribute` is not compared against when parsing gRPC service methods, which may cause false positives in the event that another tool has generated methods in the service class.
|
||||
|
||||
License
|
||||
-------
|
||||
|
|
|
|||
12
protodec.sln
12
protodec.sln
|
|
@ -12,6 +12,10 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
|
|||
README.md = README.md
|
||||
EndProjectSection
|
||||
EndProject
|
||||
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "LibCpp2IL", "..\Cpp2IL\LibCpp2IL\LibCpp2IL.csproj", "{42B987D9-E551-48BC-A821-F7411C664ECC}"
|
||||
EndProject
|
||||
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "WasmDisassembler", "..\Cpp2IL\WasmDisassembler\WasmDisassembler.csproj", "{07C0845C-7579-43C0-B4C9-4769573F3A24}"
|
||||
EndProject
|
||||
Global
|
||||
GlobalSection(SolutionConfigurationPlatforms) = preSolution
|
||||
Debug|Any CPU = Debug|Any CPU
|
||||
|
|
@ -26,6 +30,14 @@ Global
|
|||
{5F6DAD82-D9AD-4CE5-86E6-D20C9F059A4D}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
||||
{5F6DAD82-D9AD-4CE5-86E6-D20C9F059A4D}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
||||
{5F6DAD82-D9AD-4CE5-86E6-D20C9F059A4D}.Release|Any CPU.Build.0 = Release|Any CPU
|
||||
{42B987D9-E551-48BC-A821-F7411C664ECC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
|
||||
{42B987D9-E551-48BC-A821-F7411C664ECC}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
||||
{42B987D9-E551-48BC-A821-F7411C664ECC}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
||||
{42B987D9-E551-48BC-A821-F7411C664ECC}.Release|Any CPU.Build.0 = Release|Any CPU
|
||||
{07C0845C-7579-43C0-B4C9-4769573F3A24}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
|
||||
{07C0845C-7579-43C0-B4C9-4769573F3A24}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
||||
{07C0845C-7579-43C0-B4C9-4769573F3A24}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
||||
{07C0845C-7579-43C0-B4C9-4769573F3A24}.Release|Any CPU.Build.0 = Release|Any CPU
|
||||
EndGlobalSection
|
||||
GlobalSection(SolutionProperties) = preSolution
|
||||
HideSolutionNode = FALSE
|
||||
|
|
|
|||
|
|
@ -18,6 +18,7 @@
|
|||
</PropertyGroup>
|
||||
|
||||
<ItemGroup>
|
||||
<ProjectReference Include="..\..\..\Cpp2IL\LibCpp2IL\LibCpp2IL.csproj" />
|
||||
<PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="9.0.0-preview.5.24306.7" />
|
||||
<PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />
|
||||
<PackageReference Include="System.Reflection.MetadataLoadContext" Version="9.0.0-preview.5.24306.7" />
|
||||
|
|
|
|||
|
|
@ -0,0 +1,64 @@
|
|||
// Copyright © 2024 Xpl0itR
|
||||
//
|
||||
// This Source Code Form is subject to the terms of the Mozilla Public
|
||||
// License, v. 2.0. If a copy of the MPL was not distributed with this
|
||||
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||||
|
||||
using System;
|
||||
using System.Linq;
|
||||
using AssetRipper.Primitives;
|
||||
using CommunityToolkit.Diagnostics;
|
||||
using LibCpp2IL;
|
||||
using LibCpp2IL.Logging;
|
||||
using LibCpp2IL.Metadata;
|
||||
using LibCpp2IL.Reflection;
|
||||
using LibProtodec.Models.Cil;
|
||||
using LibProtodec.Models.Cil.Il2Cpp;
|
||||
using Microsoft.Extensions.Logging;
|
||||
|
||||
namespace LibProtodec.Loaders;
|
||||
|
||||
public sealed class Il2CppAssemblyLoader : CilAssemblyLoader
|
||||
{
|
||||
public Il2CppAssemblyLoader(string assemblyPath, string metadataPath, UnityVersion unityVersion, ILoggerFactory? loggerFactory = null)
|
||||
{
|
||||
if (loggerFactory is not null)
|
||||
{
|
||||
LibLogger.Writer = new LibCpp2IlLogger(
|
||||
loggerFactory.CreateLogger(nameof(LibCpp2IL)));
|
||||
}
|
||||
|
||||
if (!LibCpp2IlMain.LoadFromFile(assemblyPath, metadataPath, unityVersion))
|
||||
ThrowHelper.ThrowInvalidDataException("Failed to load IL2Cpp assembly!");
|
||||
|
||||
this.LoadedTypes = LibCpp2IlMain.TheMetadata!.typeDefs.Select(Il2CppType.GetOrCreate).ToList();
|
||||
|
||||
loggerFactory?.CreateLogger<Il2CppAssemblyLoader>()
|
||||
.LogLoadedTypeAndAssemblyCount(this.LoadedTypes.Count, LibCpp2IlMain.TheMetadata.imageDefinitions.Length);
|
||||
}
|
||||
|
||||
protected override ICilType FindType(string typeFullName, string assemblySimpleName)
|
||||
{
|
||||
Il2CppTypeDefinition? type = LibCpp2IlReflection.GetTypeByFullName(typeFullName);
|
||||
Guard.IsNotNull(type);
|
||||
|
||||
return Il2CppType.GetOrCreate(type);
|
||||
}
|
||||
|
||||
private sealed class LibCpp2IlLogger(ILogger logger) : LogWriter
|
||||
{
|
||||
private static readonly Func<string, Exception?, string> MessageFormatter = (message, _) => message.Trim();
|
||||
|
||||
public override void Info(string message) =>
|
||||
logger.Log(LogLevel.Information, default(EventId), message, null, MessageFormatter);
|
||||
|
||||
public override void Warn(string message) =>
|
||||
logger.Log(LogLevel.Warning, default(EventId), message, null, MessageFormatter);
|
||||
|
||||
public override void Error(string message) =>
|
||||
logger.Log(LogLevel.Error, default(EventId), message, null, MessageFormatter);
|
||||
|
||||
public override void Verbose(string message) =>
|
||||
logger.Log(LogLevel.Debug, default(EventId), message, null, MessageFormatter);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,22 @@
|
|||
// Copyright © 2024 Xpl0itR
|
||||
//
|
||||
// This Source Code Form is subject to the terms of the Mozilla Public
|
||||
// License, v. 2.0. If a copy of the MPL was not distributed with this
|
||||
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||||
|
||||
using System.Collections.Generic;
|
||||
using CommunityToolkit.Diagnostics;
|
||||
using LibCpp2IL.Metadata;
|
||||
|
||||
namespace LibProtodec.Models.Cil.Il2Cpp;
|
||||
|
||||
public sealed class Il2CppAttribute(Il2CppTypeDefinition il2CppAttrType, object?[]? ctorArgValues) : ICilAttribute
|
||||
{
|
||||
public ICilType Type =>
|
||||
Il2CppType.GetOrCreate(il2CppAttrType);
|
||||
|
||||
public IList<object?> ConstructorArgumentValues =>
|
||||
ctorArgValues
|
||||
?? ThrowHelper.ThrowNotSupportedException<IList<object?>>(
|
||||
"Attribute constructor argument parsing is only available on metadata version 29 or greater.");
|
||||
}
|
||||
|
|
@ -0,0 +1,40 @@
|
|||
// Copyright © 2024 Xpl0itR
|
||||
//
|
||||
// This Source Code Form is subject to the terms of the Mozilla Public
|
||||
// License, v. 2.0. If a copy of the MPL was not distributed with this
|
||||
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||||
|
||||
using System.Reflection;
|
||||
using LibCpp2IL.Metadata;
|
||||
|
||||
namespace LibProtodec.Models.Cil.Il2Cpp;
|
||||
|
||||
public sealed class Il2CppField(Il2CppFieldDefinition il2CppField) : Il2CppMember, ICilField
|
||||
{
|
||||
private readonly FieldAttributes _attributes =
|
||||
(FieldAttributes)il2CppField.RawFieldType!.Attrs;
|
||||
|
||||
public string Name =>
|
||||
il2CppField.Name!;
|
||||
|
||||
public object? ConstantValue =>
|
||||
il2CppField.DefaultValue!.Value;
|
||||
|
||||
public bool IsLiteral =>
|
||||
(_attributes & FieldAttributes.Literal) != 0;
|
||||
|
||||
public bool IsPublic =>
|
||||
(_attributes & FieldAttributes.Public) != 0;
|
||||
|
||||
public bool IsStatic =>
|
||||
(_attributes & FieldAttributes.Static) != 0;
|
||||
|
||||
protected override Il2CppImageDefinition DeclaringAssembly =>
|
||||
il2CppField.FieldType!.baseType!.DeclaringAssembly!;
|
||||
|
||||
protected override int CustomAttributeIndex =>
|
||||
il2CppField.customAttributeIndex;
|
||||
|
||||
protected override uint Token =>
|
||||
il2CppField.token;
|
||||
}
|
||||
|
|
@ -0,0 +1,306 @@
|
|||
// Copyright © 2024 Xpl0itR
|
||||
//
|
||||
// This Source Code Form is subject to the terms of the Mozilla Public
|
||||
// License, v. 2.0. If a copy of the MPL was not distributed with this
|
||||
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||||
|
||||
using System;
|
||||
using System.Collections.Generic;
|
||||
using System.Text;
|
||||
using SystemEx.Memory;
|
||||
using CommunityToolkit.Diagnostics;
|
||||
using LibCpp2IL;
|
||||
using LibCpp2IL.BinaryStructures;
|
||||
using LibCpp2IL.Metadata;
|
||||
|
||||
namespace LibProtodec.Models.Cil.Il2Cpp;
|
||||
|
||||
public abstract class Il2CppMember
|
||||
{
|
||||
private ICilAttribute[]? _customAttributes;
|
||||
|
||||
public IList<ICilAttribute> CustomAttributes
|
||||
{
|
||||
get
|
||||
{
|
||||
if (_customAttributes is null)
|
||||
{
|
||||
if (LibCpp2IlMain.MetadataVersion < 29f)
|
||||
{
|
||||
int attrTypeRngIdx = LibCpp2IlMain.MetadataVersion <= 24f
|
||||
? CustomAttributeIndex
|
||||
: BinarySearchToken(
|
||||
LibCpp2IlMain.TheMetadata!.attributeTypeRanges,
|
||||
Token,
|
||||
DeclaringAssembly.customAttributeStart,
|
||||
(int)DeclaringAssembly.customAttributeCount);
|
||||
|
||||
if (attrTypeRngIdx < 0)
|
||||
return _customAttributes = Array.Empty<ICilAttribute>();
|
||||
|
||||
Il2CppCustomAttributeTypeRange attrTypeRng = LibCpp2IlMain.TheMetadata!.attributeTypeRanges[attrTypeRngIdx];
|
||||
|
||||
_customAttributes = new ICilAttribute[attrTypeRng.count];
|
||||
for (int attrTypeIdx = 0; attrTypeIdx < attrTypeRng.count; attrTypeIdx++)
|
||||
{
|
||||
int typeIndex = LibCpp2IlMain.TheMetadata.attributeTypes[attrTypeRng.start + attrTypeIdx];
|
||||
var type = LibCpp2IlMain.Binary!.GetType(typeIndex);
|
||||
var typeDef = LibCpp2IlMain.TheMetadata.typeDefs[type.Data.ClassIndex];
|
||||
|
||||
_customAttributes[attrTypeIdx] = new Il2CppAttribute(typeDef, null);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
int attrDataRngIdx = BinarySearchToken(
|
||||
LibCpp2IlMain.TheMetadata!.AttributeDataRanges,
|
||||
Token,
|
||||
DeclaringAssembly.customAttributeStart,
|
||||
(int)DeclaringAssembly.customAttributeCount);
|
||||
|
||||
if (attrDataRngIdx < 0)
|
||||
return _customAttributes = Array.Empty<ICilAttribute>();
|
||||
|
||||
Il2CppCustomAttributeDataRange attrDataRange = LibCpp2IlMain.TheMetadata.AttributeDataRanges[attrDataRngIdx];
|
||||
Il2CppCustomAttributeDataRange attrDataRngNext = LibCpp2IlMain.TheMetadata.AttributeDataRanges[attrDataRngIdx + 1];
|
||||
|
||||
long attrDataStart = LibCpp2IlMain.TheMetadata.metadataHeader.attributeDataOffset + attrDataRange.startOffset;
|
||||
long attrDataEnd = LibCpp2IlMain.TheMetadata.metadataHeader.attributeDataOffset + attrDataRngNext.startOffset;
|
||||
byte[] attrData = LibCpp2IlMain.TheMetadata.ReadByteArrayAtRawAddress(attrDataStart, (int)(attrDataEnd - attrDataStart));
|
||||
|
||||
MemoryReader reader = new(attrData);
|
||||
int attributeCount = (int)ReadUnityCompressedUInt32(ref reader);
|
||||
|
||||
Span<uint> ctorIndices = stackalloc uint[attributeCount];
|
||||
for (int i = 0; i < attributeCount; i++)
|
||||
ctorIndices[i] = reader.ReadUInt32LittleEndian();
|
||||
|
||||
_customAttributes = new ICilAttribute[attributeCount];
|
||||
for (int i = 0; i < attributeCount; i++)
|
||||
{
|
||||
uint ctorArgCount = ReadUnityCompressedUInt32(ref reader);
|
||||
uint fieldCount = ReadUnityCompressedUInt32(ref reader);
|
||||
uint propCount = ReadUnityCompressedUInt32(ref reader);
|
||||
|
||||
object?[] ctorArgValues = ctorArgCount > 0
|
||||
? new object[ctorArgCount]
|
||||
: Array.Empty<object?>();
|
||||
|
||||
for (int j = 0; j < ctorArgCount; j++)
|
||||
{
|
||||
ctorArgValues[j] = ReadValue(ref reader);
|
||||
}
|
||||
|
||||
for (uint j = 0; j < fieldCount; j++)
|
||||
{
|
||||
ReadValue(ref reader);
|
||||
ResolveMember(ref reader);
|
||||
}
|
||||
|
||||
for (uint j = 0; j < propCount; j++)
|
||||
{
|
||||
ReadValue(ref reader);
|
||||
ResolveMember(ref reader);
|
||||
}
|
||||
|
||||
Il2CppMethodDefinition attrCtor = LibCpp2IlMain.TheMetadata.methodDefs[ctorIndices[i]];
|
||||
Il2CppTypeDefinition attrType = LibCpp2IlMain.TheMetadata.typeDefs[attrCtor.declaringTypeIdx];
|
||||
|
||||
_customAttributes[i] = new Il2CppAttribute(attrType, ctorArgValues);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return _customAttributes;
|
||||
}
|
||||
}
|
||||
|
||||
protected abstract Il2CppImageDefinition DeclaringAssembly { get; }
|
||||
|
||||
protected abstract int CustomAttributeIndex { get; }
|
||||
|
||||
protected abstract uint Token { get; }
|
||||
|
||||
private static int BinarySearchToken(IReadOnlyList<IIl2CppTokenProvider> source, uint token, int start, int count)
|
||||
{
|
||||
int lo = start;
|
||||
int hi = start + count - 1;
|
||||
while (lo <= hi)
|
||||
{
|
||||
int i = lo + ((hi - lo) >> 1);
|
||||
|
||||
switch (source[i].Token.CompareTo(token))
|
||||
{
|
||||
case 0:
|
||||
return i;
|
||||
case < 0:
|
||||
lo = i + 1;
|
||||
break;
|
||||
default:
|
||||
hi = i - 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return ~lo;
|
||||
}
|
||||
|
||||
private static uint ReadUnityCompressedUInt32(ref MemoryReader reader)
|
||||
{
|
||||
byte byt = reader.ReadByte();
|
||||
|
||||
switch (byt)
|
||||
{
|
||||
case < 128:
|
||||
return byt;
|
||||
case 240:
|
||||
return reader.ReadUInt32LittleEndian();
|
||||
case 254:
|
||||
return uint.MaxValue - 1;
|
||||
case byte.MaxValue:
|
||||
return uint.MaxValue;
|
||||
}
|
||||
|
||||
if ((byt & 192) == 192)
|
||||
{
|
||||
return (byt & ~192U) << 24
|
||||
| ((uint)reader.ReadByte() << 16)
|
||||
| ((uint)reader.ReadByte() << 8)
|
||||
| reader.ReadByte();
|
||||
}
|
||||
|
||||
if ((byt & 128) == 128)
|
||||
{
|
||||
return (byt & ~128U) << 8
|
||||
| reader.ReadByte();
|
||||
}
|
||||
|
||||
return ThrowHelper.ThrowInvalidDataException<uint>();
|
||||
}
|
||||
|
||||
private static int ReadUnityCompressedInt32(ref MemoryReader reader)
|
||||
{
|
||||
uint unsigned = ReadUnityCompressedUInt32(ref reader);
|
||||
if (unsigned == uint.MaxValue)
|
||||
return int.MinValue;
|
||||
|
||||
bool isNegative = (unsigned & 1) == 1;
|
||||
unsigned >>= 1;
|
||||
|
||||
return isNegative
|
||||
? -(int)(unsigned + 1)
|
||||
: (int)unsigned;
|
||||
}
|
||||
|
||||
private static object? ReadValue(ref MemoryReader reader)
|
||||
{
|
||||
Il2CppTypeEnum type = (Il2CppTypeEnum)reader.ReadByte();
|
||||
return ReadValue(ref reader, type);
|
||||
}
|
||||
|
||||
private static object? ReadValue(ref MemoryReader reader, Il2CppTypeEnum type)
|
||||
{
|
||||
switch (type)
|
||||
{
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_ENUM:
|
||||
Il2CppTypeEnum underlyingType = ReadEnumUnderlyingType(ref reader);
|
||||
return ReadValue(ref reader, underlyingType);
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_SZARRAY:
|
||||
return ReadSzArray(ref reader);
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_IL2CPP_TYPE_INDEX:
|
||||
int typeIndex = ReadUnityCompressedInt32(ref reader);
|
||||
return LibCpp2IlMain.Binary!.GetType(typeIndex);
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_BOOLEAN:
|
||||
return reader.ReadBoolean();
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_CHAR:
|
||||
return (char)reader.ReadInt16LittleEndian();
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_I1:
|
||||
return reader.ReadSByte();
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_U1:
|
||||
return reader.ReadByte();
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_I2:
|
||||
return reader.ReadInt16LittleEndian();
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_U2:
|
||||
return reader.ReadUInt16LittleEndian();
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_I4:
|
||||
return ReadUnityCompressedInt32(ref reader);
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_U4:
|
||||
return ReadUnityCompressedUInt32(ref reader);
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_I8:
|
||||
return reader.ReadInt64LittleEndian();
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_U8:
|
||||
return reader.ReadUInt64LittleEndian();
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_R4:
|
||||
return reader.ReadSingleLittleEndian();
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_R8:
|
||||
return reader.ReadDoubleLittleEndian();
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_STRING:
|
||||
return ReadString(ref reader);
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_CLASS:
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_OBJECT:
|
||||
case Il2CppTypeEnum.IL2CPP_TYPE_GENERICINST:
|
||||
default:
|
||||
return ThrowHelper.ThrowNotSupportedException<object>();
|
||||
}
|
||||
}
|
||||
|
||||
private static Il2CppTypeEnum ReadEnumUnderlyingType(ref MemoryReader reader)
|
||||
{
|
||||
int typeIdx = ReadUnityCompressedInt32(ref reader);
|
||||
var enumType = LibCpp2IlMain.Binary!.GetType(typeIdx);
|
||||
var underlyingType = LibCpp2IlMain.Binary.GetType(
|
||||
enumType.AsClass().ElementTypeIndex);
|
||||
|
||||
return underlyingType.Type;
|
||||
}
|
||||
|
||||
private static object?[]? ReadSzArray(ref MemoryReader reader)
|
||||
{
|
||||
int arrayLength = ReadUnityCompressedInt32(ref reader);
|
||||
if (arrayLength == -1)
|
||||
return null;
|
||||
|
||||
Il2CppTypeEnum arrayType = (Il2CppTypeEnum)reader.ReadByte();
|
||||
if (arrayType == Il2CppTypeEnum.IL2CPP_TYPE_ENUM)
|
||||
arrayType = ReadEnumUnderlyingType(ref reader);
|
||||
|
||||
bool typePrefixed = reader.ReadBoolean();
|
||||
if (typePrefixed && arrayType != Il2CppTypeEnum.IL2CPP_TYPE_OBJECT)
|
||||
ThrowHelper.ThrowInvalidDataException("Array elements are type-prefixed, but the array type is not object");
|
||||
|
||||
object?[] array = new object?[arrayLength];
|
||||
for (int i = 0; i < arrayLength; i++)
|
||||
{
|
||||
Il2CppTypeEnum elementType = typePrefixed
|
||||
? (Il2CppTypeEnum)reader.ReadByte()
|
||||
: arrayType;
|
||||
|
||||
array[i] = ReadValue(ref reader, elementType);
|
||||
}
|
||||
|
||||
return array;
|
||||
}
|
||||
|
||||
private static string? ReadString(ref MemoryReader reader)
|
||||
{
|
||||
int length = ReadUnityCompressedInt32(ref reader);
|
||||
if (length == -1)
|
||||
return null;
|
||||
|
||||
ReadOnlySpan<byte> bytes = reader.ReadBytes(length);
|
||||
return Encoding.UTF8.GetString(bytes);
|
||||
}
|
||||
|
||||
private static void ResolveMember(ref MemoryReader reader)
|
||||
{
|
||||
// We don't care about attribute properties or fields,
|
||||
// so we just read enough to exhaust the stream
|
||||
|
||||
int memberIndex = ReadUnityCompressedInt32(ref reader);
|
||||
if (memberIndex < 0)
|
||||
{
|
||||
uint typeIndex = ReadUnityCompressedUInt32(ref reader);
|
||||
memberIndex = -(memberIndex + 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,57 @@
|
|||
// Copyright © 2024 Xpl0itR
|
||||
//
|
||||
// This Source Code Form is subject to the terms of the Mozilla Public
|
||||
// License, v. 2.0. If a copy of the MPL was not distributed with this
|
||||
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||||
|
||||
using System.Collections.Generic;
|
||||
using System.Reflection;
|
||||
using LibCpp2IL;
|
||||
using LibCpp2IL.Metadata;
|
||||
using LibCpp2IL.Reflection;
|
||||
|
||||
namespace LibProtodec.Models.Cil.Il2Cpp;
|
||||
|
||||
public sealed class Il2CppMethod(Il2CppMethodDefinition il2CppMethod) : Il2CppMember, ICilMethod
|
||||
{
|
||||
public string Name =>
|
||||
il2CppMethod.Name!;
|
||||
|
||||
public bool IsInherited =>
|
||||
false;
|
||||
|
||||
public bool IsConstructor =>
|
||||
Name is ".ctor" or ".cctor";
|
||||
|
||||
public bool IsPublic =>
|
||||
(il2CppMethod.Attributes & MethodAttributes.Public) != 0;
|
||||
|
||||
public bool IsStatic =>
|
||||
(il2CppMethod.Attributes & MethodAttributes.Static) != 0;
|
||||
|
||||
public bool IsVirtual =>
|
||||
(il2CppMethod.Attributes & MethodAttributes.Virtual) != 0;
|
||||
|
||||
public ICilType ReturnType =>
|
||||
Il2CppType.GetOrCreate(
|
||||
LibCpp2ILUtils.GetTypeReflectionData(
|
||||
LibCpp2IlMain.Binary!.GetType(
|
||||
il2CppMethod.returnTypeIdx)));
|
||||
|
||||
public IEnumerable<ICilType> GetParameterTypes()
|
||||
{
|
||||
foreach (Il2CppParameterReflectionData parameter in il2CppMethod.Parameters!)
|
||||
{
|
||||
yield return Il2CppType.GetOrCreate(parameter.Type);
|
||||
}
|
||||
}
|
||||
|
||||
protected override Il2CppImageDefinition DeclaringAssembly =>
|
||||
il2CppMethod.DeclaringType!.DeclaringAssembly!;
|
||||
|
||||
protected override int CustomAttributeIndex =>
|
||||
il2CppMethod.customAttributeIndex;
|
||||
|
||||
protected override uint Token =>
|
||||
il2CppMethod.token;
|
||||
}
|
||||
|
|
@ -0,0 +1,54 @@
|
|||
// Copyright © 2024 Xpl0itR
|
||||
//
|
||||
// This Source Code Form is subject to the terms of the Mozilla Public
|
||||
// License, v. 2.0. If a copy of the MPL was not distributed with this
|
||||
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||||
|
||||
using System.Linq;
|
||||
using LibCpp2IL;
|
||||
using LibCpp2IL.Metadata;
|
||||
|
||||
namespace LibProtodec.Models.Cil.Il2Cpp;
|
||||
|
||||
// We take declaring type as a ctor arg because of the nonsensically inefficient way libcpp2il calculates Il2CppPropertyDefinition's DeclaringType property
|
||||
public sealed class Il2CppProperty(Il2CppPropertyDefinition il2CppProperty, Il2CppTypeDefinition declaringType) : Il2CppMember, ICilProperty
|
||||
{
|
||||
public string Name =>
|
||||
il2CppProperty.Name!;
|
||||
|
||||
public bool IsInherited =>
|
||||
false;
|
||||
|
||||
public bool CanRead =>
|
||||
il2CppProperty.get >= 0;
|
||||
|
||||
public bool CanWrite =>
|
||||
il2CppProperty.set >= 0;
|
||||
|
||||
public ICilMethod? Getter =>
|
||||
CanRead
|
||||
? new Il2CppMethod(
|
||||
LibCpp2IlMain.TheMetadata!.methodDefs[
|
||||
declaringType.FirstMethodIdx + il2CppProperty.get])
|
||||
: null;
|
||||
|
||||
public ICilMethod? Setter =>
|
||||
CanWrite
|
||||
? new Il2CppMethod(
|
||||
LibCpp2IlMain.TheMetadata!.methodDefs[
|
||||
declaringType.FirstMethodIdx + il2CppProperty.set])
|
||||
: null;
|
||||
|
||||
public ICilType Type =>
|
||||
Getter?.ReturnType
|
||||
?? Setter!.GetParameterTypes().First();
|
||||
|
||||
protected override Il2CppImageDefinition DeclaringAssembly =>
|
||||
declaringType.DeclaringAssembly!;
|
||||
|
||||
protected override int CustomAttributeIndex =>
|
||||
il2CppProperty.customAttributeIndex;
|
||||
|
||||
protected override uint Token =>
|
||||
il2CppProperty.token;
|
||||
}
|
||||
|
|
@ -0,0 +1,197 @@
|
|||
// Copyright © 2024 Xpl0itR
|
||||
//
|
||||
// This Source Code Form is subject to the terms of the Mozilla Public
|
||||
// License, v. 2.0. If a copy of the MPL was not distributed with this
|
||||
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||||
|
||||
using System;
|
||||
using System.Collections.Concurrent;
|
||||
using System.Collections.Generic;
|
||||
using System.Reflection;
|
||||
using CommunityToolkit.Diagnostics;
|
||||
using LibCpp2IL;
|
||||
using LibCpp2IL.Metadata;
|
||||
using LibCpp2IL.Reflection;
|
||||
|
||||
namespace LibProtodec.Models.Cil.Il2Cpp;
|
||||
|
||||
public sealed class Il2CppType : Il2CppMember, ICilType
|
||||
{
|
||||
private readonly Il2CppTypeDefinition _il2CppType;
|
||||
private readonly Il2CppTypeReflectionData[] _genericArgs;
|
||||
private ICilType[]? _genericTypeArguments;
|
||||
|
||||
private Il2CppType(Il2CppTypeDefinition il2CppType, Il2CppTypeReflectionData[] genericArgs) =>
|
||||
(_il2CppType, _genericArgs) = (il2CppType, genericArgs);
|
||||
|
||||
public string Name =>
|
||||
_il2CppType.Name!;
|
||||
|
||||
public string FullName =>
|
||||
_il2CppType.FullName!;
|
||||
|
||||
public string? Namespace =>
|
||||
_il2CppType.Namespace;
|
||||
|
||||
public string DeclaringAssemblyName =>
|
||||
LibCpp2IlMain.TheMetadata!.GetStringFromIndex(
|
||||
DeclaringAssembly.nameIndex);
|
||||
|
||||
public ICilType? DeclaringType =>
|
||||
IsNested
|
||||
? GetOrCreate(
|
||||
LibCpp2ILUtils.GetTypeReflectionData(
|
||||
LibCpp2IlMain.Binary!.GetType(
|
||||
_il2CppType.DeclaringTypeIndex)))
|
||||
: null;
|
||||
|
||||
public ICilType? BaseType =>
|
||||
_il2CppType.ParentIndex == -1
|
||||
? null
|
||||
: GetOrCreate(
|
||||
LibCpp2ILUtils.GetTypeReflectionData(
|
||||
LibCpp2IlMain.Binary!.GetType(
|
||||
_il2CppType.ParentIndex)));
|
||||
|
||||
public bool IsAbstract =>
|
||||
_il2CppType.IsAbstract;
|
||||
|
||||
public bool IsClass =>
|
||||
(_il2CppType.Attributes & TypeAttributes.ClassSemanticsMask) == TypeAttributes.Class
|
||||
&& !_il2CppType.IsValueType;
|
||||
|
||||
public bool IsEnum =>
|
||||
_il2CppType.IsEnumType;
|
||||
|
||||
public bool IsNested =>
|
||||
_il2CppType.DeclaringTypeIndex >= 0;
|
||||
|
||||
public bool IsSealed =>
|
||||
(_il2CppType.Attributes & TypeAttributes.Sealed) != 0;
|
||||
|
||||
public IList<ICilType> GenericTypeArguments
|
||||
{
|
||||
get
|
||||
{
|
||||
if (_genericTypeArguments is null)
|
||||
{
|
||||
_genericTypeArguments = _genericArgs.Length < 1
|
||||
? Array.Empty<ICilType>()
|
||||
: new ICilType[_genericArgs.Length];
|
||||
|
||||
for (int i = 0; i < _genericArgs.Length; i++)
|
||||
{
|
||||
_genericTypeArguments[i] = GetOrCreate(_genericArgs[i]);
|
||||
}
|
||||
}
|
||||
|
||||
return _genericTypeArguments;
|
||||
}
|
||||
}
|
||||
|
||||
public IEnumerable<ICilField> GetFields()
|
||||
{
|
||||
for (int i = 0; i < _il2CppType.FieldCount; i++)
|
||||
{
|
||||
yield return new Il2CppField(
|
||||
LibCpp2IlMain.TheMetadata!.fieldDefs[
|
||||
_il2CppType.FirstFieldIdx + i]);
|
||||
}
|
||||
}
|
||||
|
||||
public IEnumerable<ICilMethod> GetMethods()
|
||||
{
|
||||
for (int i = 0; i < _il2CppType.MethodCount; i++)
|
||||
{
|
||||
yield return new Il2CppMethod(
|
||||
LibCpp2IlMain.TheMetadata!.methodDefs[
|
||||
_il2CppType.FirstMethodIdx + i]);
|
||||
}
|
||||
}
|
||||
|
||||
public IEnumerable<ICilType> GetNestedTypes()
|
||||
{
|
||||
for (int i = 0; i < _il2CppType.NestedTypeCount; i++)
|
||||
{
|
||||
yield return GetOrCreate(
|
||||
LibCpp2IlMain.TheMetadata!.typeDefs[
|
||||
LibCpp2IlMain.TheMetadata.nestedTypeIndices[
|
||||
_il2CppType.NestedTypesStart + i]]);
|
||||
}
|
||||
}
|
||||
|
||||
public IEnumerable<ICilProperty> GetProperties()
|
||||
{
|
||||
for (int i = 0; i < _il2CppType.PropertyCount; i++)
|
||||
{
|
||||
yield return new Il2CppProperty(
|
||||
LibCpp2IlMain.TheMetadata!.propertyDefs[
|
||||
_il2CppType.FirstPropertyId + i],
|
||||
_il2CppType);
|
||||
}
|
||||
}
|
||||
|
||||
public bool IsAssignableTo(ICilType type)
|
||||
{
|
||||
if (type is Il2CppType il2CppType)
|
||||
{
|
||||
return IsAssignableTo(_il2CppType, il2CppType._il2CppType);
|
||||
}
|
||||
|
||||
return ThrowHelper.ThrowNotSupportedException<bool>();
|
||||
}
|
||||
|
||||
protected override Il2CppImageDefinition DeclaringAssembly =>
|
||||
_il2CppType.DeclaringAssembly!;
|
||||
|
||||
protected override int CustomAttributeIndex =>
|
||||
_il2CppType.CustomAttributeIndex;
|
||||
|
||||
protected override uint Token =>
|
||||
_il2CppType.Token;
|
||||
|
||||
|
||||
private static readonly ConcurrentDictionary<string, Il2CppType> TypeLookup = [];
|
||||
|
||||
public static ICilType GetOrCreate(Il2CppTypeDefinition il2CppType) =>
|
||||
TypeLookup.GetOrAdd(
|
||||
il2CppType.FullName!,
|
||||
static (_, il2CppType) =>
|
||||
new Il2CppType(il2CppType, Array.Empty<Il2CppTypeReflectionData>()),
|
||||
il2CppType);
|
||||
|
||||
public static ICilType GetOrCreate(Il2CppTypeReflectionData il2CppTypeData)
|
||||
{
|
||||
Guard.IsTrue(il2CppTypeData.isType);
|
||||
|
||||
return TypeLookup.GetOrAdd(
|
||||
il2CppTypeData.ToString(),
|
||||
static (_, il2CppTypeData) =>
|
||||
new Il2CppType(il2CppTypeData.baseType!, il2CppTypeData.genericParams),
|
||||
il2CppTypeData);
|
||||
}
|
||||
|
||||
private static bool IsAssignableTo(Il2CppTypeDefinition thisType, Il2CppTypeDefinition baseType)
|
||||
{
|
||||
if (baseType.IsInterface)
|
||||
{
|
||||
foreach (Il2CppTypeReflectionData @interface in thisType.Interfaces!)
|
||||
{
|
||||
if (@interface.baseType == baseType)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (thisType == baseType)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
|
||||
Il2CppTypeDefinition? thisTypeBaseType = thisType.BaseType?.baseType;
|
||||
|
||||
return thisTypeBaseType is not null
|
||||
&& IsAssignableTo(thisTypeBaseType, baseType);
|
||||
}
|
||||
}
|
||||
|
|
@ -12,6 +12,7 @@ using System.Diagnostics.CodeAnalysis;
|
|||
using System.Linq;
|
||||
using SystemEx;
|
||||
using CommunityToolkit.Diagnostics;
|
||||
using LibCpp2IL;
|
||||
using LibProtodec.Models.Cil;
|
||||
using LibProtodec.Models.Protobuf;
|
||||
using LibProtodec.Models.Protobuf.Fields;
|
||||
|
|
@ -572,7 +573,8 @@ public class ProtodecContext
|
|||
|
||||
protected string TranslateEnumFieldName(IEnumerable<ICilAttribute> attributes, string fieldName, string enumName)
|
||||
{
|
||||
if (attributes.SingleOrDefault(static attr => attr.Type.Name == "OriginalNameAttribute")
|
||||
if (LibCpp2IlMain.MetadataVersion >= 29f //TODO: do not merge into master until il2cpp-specific global is removed
|
||||
&& attributes.SingleOrDefault(static attr => attr.Type.Name == "OriginalNameAttribute")
|
||||
?.ConstructorArgumentValues[0] is string originalName)
|
||||
{
|
||||
return originalName;
|
||||
|
|
@ -628,7 +630,8 @@ public class ProtodecContext
|
|||
|
||||
protected static bool HasGeneratedCodeAttribute(IEnumerable<ICilAttribute> attributes, string tool) =>
|
||||
attributes.Any(attr => attr.Type.Name == nameof(GeneratedCodeAttribute)
|
||||
&& attr.ConstructorArgumentValues[0] as string == tool);
|
||||
&& (LibCpp2IlMain.MetadataVersion < 29f //TODO: do not merge into master until il2cpp-specific global is removed
|
||||
|| attr.ConstructorArgumentValues[0] as string == tool));
|
||||
|
||||
protected static bool HasNonUserCodeAttribute(IEnumerable<ICilAttribute> attributes) =>
|
||||
attributes.Any(static attr => attr.Type.Name == nameof(DebuggerNonUserCodeAttribute));
|
||||
|
|
|
|||
|
|
@ -9,6 +9,8 @@ using System.CodeDom.Compiler;
|
|||
using System.Collections.Generic;
|
||||
using System.IO;
|
||||
using System.Linq;
|
||||
using AssetRipper.Primitives;
|
||||
using LibCpp2IL;
|
||||
using LibProtodec;
|
||||
using LibProtodec.Loaders;
|
||||
using LibProtodec.Models.Cil;
|
||||
|
|
@ -17,9 +19,11 @@ using Microsoft.Extensions.Logging;
|
|||
|
||||
const string indent = " ";
|
||||
const string help = """
|
||||
Usage: protodec(.exe) <target_assembly_path> <out_path> [options]
|
||||
Usage: protodec(.exe) <game_assembly_path> <global_metadata_path> <unity_version> <out_path> [options]
|
||||
Arguments:
|
||||
target_assembly_path Either the path to the target assembly or a directory of assemblies, all of which be parsed.
|
||||
game_assembly_path The path to the game assembly DLL.
|
||||
global_metadata_path The path to the global-metadata.dat file.
|
||||
unity_version The version of Unity which was used to create the metadata file or alternatively, the path to the globalgamemanagers or the data.unity3d file.
|
||||
out_path An existing directory to output into individual files, otherwise output to a single file.
|
||||
Options:
|
||||
--debug Drops the minimum log level to Debug.
|
||||
|
|
@ -30,14 +34,16 @@ const string help = """
|
|||
--include_service_methods_without_generated_code_attribute Includes methods that aren't decorated with `GeneratedCode("grpc_csharp_plugin")` when parsing gRPC services.
|
||||
""";
|
||||
|
||||
if (args.Length < 2)
|
||||
if (args.Length < 4)
|
||||
{
|
||||
Console.WriteLine(help);
|
||||
return;
|
||||
}
|
||||
|
||||
string assembly = args[0];
|
||||
string outPath = Path.GetFullPath(args[1]);
|
||||
string metadata = args[1];
|
||||
string uVersion = args[2];
|
||||
string outPath = Path.GetFullPath(args[3]);
|
||||
ParserOptions options = ParserOptions.None;
|
||||
LogLevel logLevel = args.Contains("--debug")
|
||||
? LogLevel.Debug
|
||||
|
|
@ -52,14 +58,23 @@ if (args.Contains("--include_properties_without_non_user_code_attribute"))
|
|||
if (args.Contains("--include_service_methods_without_generated_code_attribute"))
|
||||
options |= ParserOptions.IncludeServiceMethodsWithoutGeneratedCodeAttribute;
|
||||
|
||||
if (!UnityVersion.TryParse(uVersion, out UnityVersion unityVersion, out _))
|
||||
{
|
||||
unityVersion = uVersion.EndsWith("globalgamemanagers")
|
||||
? LibCpp2IlMain.GetVersionFromGlobalGameManagers(
|
||||
File.ReadAllBytes(uVersion))
|
||||
: LibCpp2IlMain.GetVersionFromDataUnity3D(
|
||||
File.OpenRead(uVersion));
|
||||
}
|
||||
|
||||
using ILoggerFactory loggerFactory = LoggerFactory.Create(
|
||||
builder => builder.AddSimpleConsole(static console => console.IncludeScopes = true)
|
||||
.SetMinimumLevel(logLevel));
|
||||
ILogger logger = loggerFactory.CreateLogger("protodec");
|
||||
|
||||
logger.LogInformation("Loading target assemblies...");
|
||||
using CilAssemblyLoader loader = new ClrAssemblyLoader(
|
||||
assembly, loggerFactory.CreateLogger<ClrAssemblyLoader>());
|
||||
using CilAssemblyLoader loader = new Il2CppAssemblyLoader(
|
||||
assembly, metadata, unityVersion, loggerFactory);
|
||||
|
||||
ProtodecContext ctx = new()
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue