public Metadata(Stream stream) : base(stream)
{
pMetadataHdr = ReadObject <Il2CppGlobalMetadataHeader>();
if (pMetadataHdr.sanity != 0xFAB11BAF)
{
throw new Exception("ERROR: Metadata file supplied is not valid metadata file.");
}
if (pMetadataHdr.version != 21 && pMetadataHdr.version != 22)
{
throw new Exception($"ERROR: Metadata file supplied is not a supported version[{pMetadataHdr.version}].");
}
var uiImageCount = pMetadataHdr.imagesCount / MySizeOf(typeof(Il2CppImageDefinition));
var uiNumTypes = pMetadataHdr.typeDefinitionsCount / MySizeOf(typeof(Il2CppTypeDefinition));
Images = ReadArray <Il2CppImageDefinition>(pMetadataHdr.imagesOffset, uiImageCount);
//GetTypeDefFromIndex
Types = ReadArray <Il2CppTypeDefinition>(pMetadataHdr.typeDefinitionsOffset, uiNumTypes);
//GetMethodDefinition
Methods = ReadArray <Il2CppMethodDefinition>(pMetadataHdr.methodsOffset, pMetadataHdr.methodsCount / MySizeOf(typeof(Il2CppMethodDefinition)));
//GetParameterFromIndex
parameterDefs = ReadArray <Il2CppParameterDefinition>(pMetadataHdr.parametersOffset, pMetadataHdr.parametersCount / MySizeOf(typeof(Il2CppParameterDefinition)));
//GetFieldDefFromIndex
Fields = ReadArray <Il2CppFieldDefinition>(pMetadataHdr.fieldsOffset, pMetadataHdr.fieldsCount / MySizeOf(typeof(Il2CppFieldDefinition)));
//GetFieldDefaultFromIndex
fieldDefaultValues = ReadArray <Il2CppFieldDefaultValue>(pMetadataHdr.fieldDefaultValuesOffset, pMetadataHdr.fieldDefaultValuesCount / MySizeOf(typeof(Il2CppFieldDefaultValue)));
}
public Metadata(Stream stream) : base(stream)
{
// Read magic bytes
if (ReadUInt32() != 0xFAB11BAF)
{
throw new Exception("ERROR: Metadata file supplied is not valid metadata file.");
}
// Set object versioning for Bin2Object from metadata version
Version = ReadInt32();
// Rewind and read metadata header in full
Position -= 8;
pMetadataHdr = ReadObject <Il2CppGlobalMetadataHeader>();
if (Version != 21 && Version != 22 && Version != 23)
{
throw new Exception($"ERROR: Metadata file supplied is not a supported version ({pMetadataHdr.version}).");
}
var uiImageCount = pMetadataHdr.imagesCount / Sizeof(typeof(Il2CppImageDefinition));
var uiNumTypes = pMetadataHdr.typeDefinitionsCount / Sizeof(typeof(Il2CppTypeDefinition));
Images = ReadArray <Il2CppImageDefinition>(pMetadataHdr.imagesOffset, uiImageCount);
//GetTypeDefFromIndex
Types = ReadArray <Il2CppTypeDefinition>(pMetadataHdr.typeDefinitionsOffset, uiNumTypes);
//GetMethodDefinition
Methods = ReadArray <Il2CppMethodDefinition>(pMetadataHdr.methodsOffset, pMetadataHdr.methodsCount / Sizeof(typeof(Il2CppMethodDefinition)));
//GetParameterFromIndex
parameterDefs = ReadArray <Il2CppParameterDefinition>(pMetadataHdr.parametersOffset, pMetadataHdr.parametersCount / Sizeof(typeof(Il2CppParameterDefinition)));
//GetFieldDefFromIndex
Fields = ReadArray <Il2CppFieldDefinition>(pMetadataHdr.fieldsOffset, pMetadataHdr.fieldsCount / Sizeof(typeof(Il2CppFieldDefinition)));
//GetFieldDefaultFromIndex
fieldDefaultValues = ReadArray <Il2CppFieldDefaultValue>(pMetadataHdr.fieldDefaultValuesOffset, pMetadataHdr.fieldDefaultValuesCount / Sizeof(typeof(Il2CppFieldDefaultValue)));
}
public Metadata(Stream stream) : base(stream)
{
pMetadataHdr = ReadObject <Il2CppGlobalMetadataHeader>();
if (pMetadataHdr.sanity != 0xFAB11BAF)
{
throw new Exception("ERROR: Metadata file supplied is not valid metadata file.");
}
if (pMetadataHdr.version != 21 && pMetadataHdr.version != 22)
{
throw new Exception($"ERROR: Metadata file supplied is not a supported version[{pMetadataHdr.version}].");
}
// Strings literals
var uiStringLiteralCount = pMetadataHdr.stringLiteralCount / MySizeOf(typeof(Il2CppStringLiteral));
var stringDefs = ReadArray <Il2CppStringLiteral>(pMetadataHdr.stringLiteralOffset, uiStringLiteralCount);
Strings = new string[stringDefs.Length];
for (var idx = 0; idx < stringDefs.Length; idx++)
{
var raw = ReadArray <byte>(pMetadataHdr.stringLiteralDataOffset + stringDefs[idx].dataIndex, (int)stringDefs[idx].length);
Strings[idx] = System.Text.Encoding.UTF8.GetString(raw);
}
// Images (.dll)
var uiImageCount = pMetadataHdr.imagesCount / MySizeOf(typeof(Il2CppImageDefinition));
Images = ReadArray <Il2CppImageDefinition>(pMetadataHdr.imagesOffset, uiImageCount);
// Interfaces
Interfaces = new Dictionary <int, Il2CppTypeDefinition>();
//var uiInterfacePairCount = pMetadataHdr.interfaceOffsetsCount / MySizeOf(typeof(Il2CppInterfaceOffsetPair));
//var interfacePairs = ReadArray<Il2CppInterfaceOffsetPair>(pMetadataHdr.interfaceOffsetsOffset, uiInterfacePairCount);
//var uiInterfaceCount = pMetadataHdr.interfacesCount / MySizeOf(typeof(Il2CppTypeDefinition));
//var interfaceDefs = ReadArray<Il2CppTypeDefinition>(pMetadataHdr.interfacesOffset, uiInterfaceCount);
//for (var i = 0; i < interfacePairs.Count(); i++)
//{
// Interfaces[i] = interfaceDefs[interfacePairs[i].interfaceTypeIndex];
//}
// EncodedMethods
//EncodedMethods = ReadArray<uint>(pMetadataHdr.vtableMethodsOffset, pMetadataHdr.vtableMethodsCount);
// GetTypeDefFromIndex
var uiNumTypes = pMetadataHdr.typeDefinitionsCount / MySizeOf(typeof(Il2CppTypeDefinition));
Types = ReadArray <Il2CppTypeDefinition>(pMetadataHdr.typeDefinitionsOffset, uiNumTypes);
// GetMethodDefinition
Methods = ReadArray <Il2CppMethodDefinition>(pMetadataHdr.methodsOffset, pMetadataHdr.methodsCount / MySizeOf(typeof(Il2CppMethodDefinition)));
// GetParameterFromIndex
parameterDefs = ReadArray <Il2CppParameterDefinition>(pMetadataHdr.parametersOffset, pMetadataHdr.parametersCount / MySizeOf(typeof(Il2CppParameterDefinition)));
// GetFieldDefFromIndex
Fields = ReadArray <Il2CppFieldDefinition>(pMetadataHdr.fieldsOffset, pMetadataHdr.fieldsCount / MySizeOf(typeof(Il2CppFieldDefinition)));
// GetFieldDefaultFromIndex
fieldDefaultValues = ReadArray <Il2CppFieldDefaultValue>(pMetadataHdr.fieldDefaultValuesOffset, pMetadataHdr.fieldDefaultValuesCount / MySizeOf(typeof(Il2CppFieldDefaultValue)));
}
public Metadata(Stream stream) : base(stream)
{
// Read magic bytes
if (ReadUInt32() != 0xFAB11BAF)
{
throw new Exception("ERROR: Metadata file supplied is not valid metadata file.");
}
// Set object versioning for Bin2Object from metadata version
Version = ReadInt32();
// Rewind and read metadata header in full
Position -= 8;
Header = ReadObject <Il2CppGlobalMetadataHeader>();
if (Version < 21 || Version > 24)
{
throw new Exception($"ERROR: Metadata file supplied is not a supported version ({Header.version}).");
}
// Load all the relevant metadata using offsets provided in the header
Images = ReadArray <Il2CppImageDefinition>(Header.imagesOffset, Header.imagesCount / Sizeof(typeof(Il2CppImageDefinition)));
Types = ReadArray <Il2CppTypeDefinition>(Header.typeDefinitionsOffset, Header.typeDefinitionsCount / Sizeof(typeof(Il2CppTypeDefinition)));
Methods = ReadArray <Il2CppMethodDefinition>(Header.methodsOffset, Header.methodsCount / Sizeof(typeof(Il2CppMethodDefinition)));
Params = ReadArray <Il2CppParameterDefinition>(Header.parametersOffset, Header.parametersCount / Sizeof(typeof(Il2CppParameterDefinition)));
Fields = ReadArray <Il2CppFieldDefinition>(Header.fieldsOffset, Header.fieldsCount / Sizeof(typeof(Il2CppFieldDefinition)));
FieldDefaultValues = ReadArray <Il2CppFieldDefaultValue>(Header.fieldDefaultValuesOffset, Header.fieldDefaultValuesCount / Sizeof(typeof(Il2CppFieldDefaultValue)));
Properties = ReadArray <Il2CppPropertyDefinition>(Header.propertiesOffset, Header.propertiesOffset / Sizeof(typeof(Il2CppPropertyDefinition)));
Events = ReadArray <Il2CppEventDefinition>(Header.eventsOffset, Header.eventsOffset / Sizeof(typeof(Il2CppEventDefinition)));
InterfaceUsageIndices = ReadArray <int>(Header.interfacesOffset, Header.interfacesCount / sizeof(int));
// TODO: ParameterDefaultValue, GenericParameters, ParameterConstraints, GenericContainers, MetadataUsage, CustomAttributes
// Get all string literals
Position = Header.stringOffset;
while (Position < Header.stringOffset + Header.stringCount)
{
Strings.Add((int)Position - Header.stringOffset, ReadNullTerminatedString());
}
}
public Metadata(Stream stream) : base(stream)
{
// Read magic bytes
if (ReadUInt32() != 0xFAB11BAF)
{
throw new InvalidOperationException("The supplied metadata file is not valid.");
}
// Set object versioning for Bin2Object from metadata version
Version = ReadInt32();
// Rewind and read metadata header in full
Header = ReadObject <Il2CppGlobalMetadataHeader>(0);
if (Version < 16 || Version > 24)
{
throw new InvalidOperationException($"The supplied metadata file is not of a supported version ({Header.version}).");
}
// Sanity checking
// Unity.IL2CPP.MetadataCacheWriter.WriteLibIl2CppMetadata always writes the metadata information in the same order it appears in the header,
// with each block always coming directly after the previous block, 4-byte aligned. We can use this to check the integrity of the data and
// detect sub-versions.
// For metadata v24, the header can either be either 0x110 (24.0, 24.1) or 0x108 (24.2) bytes long. Since 'stringLiteralOffset' is the first thing
// in the header after the sanity and version fields, and since it will always point directly to the first byte after the end of the header,
// we can use this value to determine the actual header length and therefore narrow down the metadata version to 24.0/24.1 or 24.2.
var realHeaderLength = Header.stringLiteralOffset;
if (realHeaderLength != Sizeof(typeof(Il2CppGlobalMetadataHeader)))
{
if (Version == 24.0)
{
Version = 24.2;
Header = ReadObject <Il2CppGlobalMetadataHeader>(0);
}
}
if (realHeaderLength != Sizeof(typeof(Il2CppGlobalMetadataHeader)))
{
throw new InvalidOperationException("Could not verify the integrity of the metadata file or accurately identify the metadata sub-version");
}
// Load all the relevant metadata using offsets provided in the header
if (Version >= 16)
{
Images = ReadArray <Il2CppImageDefinition>(Header.imagesOffset, Header.imagesCount / Sizeof(typeof(Il2CppImageDefinition)));
}
// As an additional sanity check, all images in the metadata should have Mono.Cecil.MetadataToken == 1
// In metadata v24.1, two extra fields were added which will cause the below test to fail.
// In that case, we can then adjust the version number and reload
// Tokens were introduced in v19 - we don't bother testing earlier versions
if (Version >= 19 && Images.Any(x => x.token != 1))
{
if (Version == 24.0)
{
Version = 24.1;
// No need to re-read the header, it's the same for both sub-versions
Images = ReadArray <Il2CppImageDefinition>(Header.imagesOffset, Header.imagesCount / Sizeof(typeof(Il2CppImageDefinition)));
if (Images.Any(x => x.token != 1))
{
throw new InvalidOperationException("Could not verify the integrity of the metadata file image list");
}
}
}
Types = ReadArray <Il2CppTypeDefinition>(Header.typeDefinitionsOffset, Header.typeDefinitionsCount / Sizeof(typeof(Il2CppTypeDefinition)));
Methods = ReadArray <Il2CppMethodDefinition>(Header.methodsOffset, Header.methodsCount / Sizeof(typeof(Il2CppMethodDefinition)));
Params = ReadArray <Il2CppParameterDefinition>(Header.parametersOffset, Header.parametersCount / Sizeof(typeof(Il2CppParameterDefinition)));
Fields = ReadArray <Il2CppFieldDefinition>(Header.fieldsOffset, Header.fieldsCount / Sizeof(typeof(Il2CppFieldDefinition)));
FieldDefaultValues = ReadArray <Il2CppFieldDefaultValue>(Header.fieldDefaultValuesOffset, Header.fieldDefaultValuesCount / Sizeof(typeof(Il2CppFieldDefaultValue)));
Properties = ReadArray <Il2CppPropertyDefinition>(Header.propertiesOffset, Header.propertiesCount / Sizeof(typeof(Il2CppPropertyDefinition)));
Events = ReadArray <Il2CppEventDefinition>(Header.eventsOffset, Header.eventsCount / Sizeof(typeof(Il2CppEventDefinition)));
InterfaceUsageIndices = ReadArray <int>(Header.interfacesOffset, Header.interfacesCount / sizeof(int));
NestedTypeIndices = ReadArray <int>(Header.nestedTypesOffset, Header.nestedTypesCount / sizeof(int));
GenericContainers = ReadArray <Il2CppGenericContainer>(Header.genericContainersOffset, Header.genericContainersCount / Sizeof(typeof(Il2CppGenericContainer)));
GenericParameters = ReadArray <Il2CppGenericParameter>(Header.genericParametersOffset, Header.genericParametersCount / Sizeof(typeof(Il2CppGenericParameter)));
GenericConstraintIndices = ReadArray <int>(Header.genericParameterConstraintsOffset, Header.genericParameterConstraintsCount / sizeof(int));
InterfaceOffsets = ReadArray <Il2CppInterfaceOffsetPair>(Header.interfaceOffsetsOffset, Header.interfaceOffsetsCount / Sizeof(typeof(Il2CppInterfaceOffsetPair)));
VTableMethodIndices = ReadArray <uint>(Header.vtableMethodsOffset, Header.vtableMethodsCount / sizeof(uint));
if (Version >= 16)
{
Assemblies = ReadArray <Il2CppAssemblyDefinition>(Header.assembliesOffset, Header.assembliesCount / Sizeof(typeof(Il2CppAssemblyDefinition)));
ParameterDefaultValues = ReadArray <Il2CppParameterDefaultValue>(Header.parameterDefaultValuesOffset, Header.parameterDefaultValuesCount / Sizeof(typeof(Il2CppParameterDefaultValue)));
}
if (Version >= 19)
{
MetadataUsageLists = ReadArray <Il2CppMetadataUsageList>(Header.metadataUsageListsOffset, Header.metadataUsageListsCount / Sizeof(typeof(Il2CppMetadataUsageList)));
MetadataUsagePairs = ReadArray <Il2CppMetadataUsagePair>(Header.metadataUsagePairsOffset, Header.metadataUsagePairsCount / Sizeof(typeof(Il2CppMetadataUsagePair)));
FieldRefs = ReadArray <Il2CppFieldRef>(Header.fieldRefsOffset, Header.fieldRefsCount / Sizeof(typeof(Il2CppFieldRef)));
}
if (Version >= 21)
{
AttributeTypeIndices = ReadArray <int>(Header.attributeTypesOffset, Header.attributeTypesCount / sizeof(int));
AttributeTypeRanges = ReadArray <Il2CppCustomAttributeTypeRange>(Header.attributesInfoOffset, Header.attributesInfoCount / Sizeof(typeof(Il2CppCustomAttributeTypeRange)));
}
// Get all metadata string literals
Position = Header.stringOffset;
while (Position < Header.stringOffset + Header.stringCount)
{
Strings.Add((int)Position - Header.stringOffset, ReadNullTerminatedString());
}
// Get all managed code string literals
var stringLiteralList = ReadArray <Il2CppStringLiteral>(Header.stringLiteralOffset, Header.stringLiteralCount / Sizeof(typeof(Il2CppStringLiteral)));
StringLiterals = new string[stringLiteralList.Length];
for (var i = 0; i < stringLiteralList.Length; i++)
{
StringLiterals[i] = ReadFixedLengthString(Header.stringLiteralDataOffset + stringLiteralList[i].dataIndex, stringLiteralList[i].length);
}
}
