83 lines
3.7 KiB
C#
83 lines
3.7 KiB
C#
/*
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Copyright 2017 Perfare - https://github.com/Perfare/Il2CppDumper
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Copyright 2017 Katy Coe - http://www.hearthcode.org - http://www.djkaty.com
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All rights reserved.
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*/
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Reflection;
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using NoisyCowStudios.Bin2Object;
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namespace Il2CppInspector
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{
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public class Metadata : BinaryObjectReader
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{
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public Il2CppGlobalMetadataHeader Header;
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public Il2CppImageDefinition[] Images { get; }
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public Il2CppTypeDefinition[] Types { get; }
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public Il2CppMethodDefinition[] Methods { get; }
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public Il2CppParameterDefinition[] Params { get; }
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public Il2CppFieldDefinition[] Fields { get; }
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public Il2CppFieldDefaultValue[] FieldDefaultValues { get; }
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public Dictionary<int, string> Strings { get; } = new Dictionary<int, string>();
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public Metadata(Stream stream) : base(stream)
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{
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// Read magic bytes
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if (ReadUInt32() != 0xFAB11BAF) {
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throw new Exception("ERROR: Metadata file supplied is not valid metadata file.");
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}
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// Set object versioning for Bin2Object from metadata version
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Version = ReadInt32();
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// Rewind and read metadata header in full
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Position -= 8;
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Header = ReadObject<Il2CppGlobalMetadataHeader>();
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if (Version != 21 && Version != 22 && Version != 23)
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{
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throw new Exception($"ERROR: Metadata file supplied is not a supported version ({Header.version}).");
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}
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// Load all the relevant metadata using offsets provided in the header
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Images = ReadArray<Il2CppImageDefinition>(Header.imagesOffset, Header.imagesCount / Sizeof(typeof(Il2CppImageDefinition)));
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Types = ReadArray<Il2CppTypeDefinition>(Header.typeDefinitionsOffset, Header.typeDefinitionsCount / Sizeof(typeof(Il2CppTypeDefinition)));
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Methods = ReadArray<Il2CppMethodDefinition>(Header.methodsOffset, Header.methodsCount / Sizeof(typeof(Il2CppMethodDefinition)));
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Params = ReadArray<Il2CppParameterDefinition>(Header.parametersOffset, Header.parametersCount / Sizeof(typeof(Il2CppParameterDefinition)));
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Fields = ReadArray<Il2CppFieldDefinition>(Header.fieldsOffset, Header.fieldsCount / Sizeof(typeof(Il2CppFieldDefinition)));
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FieldDefaultValues = ReadArray<Il2CppFieldDefaultValue>(Header.fieldDefaultValuesOffset, Header.fieldDefaultValuesCount / Sizeof(typeof(Il2CppFieldDefaultValue)));
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// TODO: Events, Properties, ParameterDefaultValue, GenericParameters, ParameterConstraints, GenericContainers, Interfaces, MetadataUsage, CustomAttributes
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Position = Header.stringOffset;
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while (Position < Header.stringOffset + Header.stringCount)
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Strings.Add((int)Position - Header.stringOffset, ReadNullTerminatedString());
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}
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private int Sizeof(Type type)
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{
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int size = 0;
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foreach (var i in type.GetTypeInfo().GetFields())
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{
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// Only process fields for our selected object versioning
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var versionAttr = i.GetCustomAttribute<VersionAttribute>(false);
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if (versionAttr != null) {
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if (versionAttr.Min != -1 && versionAttr.Min > Version)
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continue;
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if (versionAttr.Max != -1 && versionAttr.Max < Version)
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continue;
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}
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if (i.FieldType == typeof(int) || i.FieldType == typeof(uint))
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size += 4;
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if (i.FieldType == typeof(short) || i.FieldType == typeof(ushort))
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size += 2;
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}
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return size;
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}
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}
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}
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