internal void Write(EndiannessWriter writer, UInt32 serializationVersion)
{
writer.WriteAlignedString(Name);
writer.WritePPtrArray(PreloadTable, serializationVersion);
writer.WriteInt32(Container.Length);
foreach (var container in Container)
{
writer.WriteAlignedString(container.Key);
writer.WriteAssetInfo(container.Value, serializationVersion);
}
writer.WriteAssetInfo(MainAsset, serializationVersion);
writer.WriteUInt32(RuntimeCompatibility);
writer.WriteAlignedString(AssetBundleName);
writer.WriteInt32(DependencyAssetBundleNames.Length);
foreach (var dependencyAssetBundleName in DependencyAssetBundleNames)
{
writer.WriteAlignedString(dependencyAssetBundleName);
}
writer.WriteBoolean(IsStreamedSceneAssetBundle);
writer.Align(4);
writer.WriteInt32(ExplicitDataLayout);
writer.WriteInt32(PathFlags);
writer.WriteInt32(SceneHashes.Count);
foreach (var sceneHash in SceneHashes)
{
writer.WriteString(sceneHash.Key);
writer.WriteString(sceneHash.Value);
}
}
internal void Write(EndiannessWriter writer)
{
writer.WriteUInt32(MetadataSize);
writer.WriteUInt32((UInt32)FileSize);
writer.WriteUInt32(Version);
writer.WriteUInt32((UInt32)DataOffset);
writer.Write(new[] { (byte)Endianness });
// Writing endianness changes from here
// What the actual f**k?
writer.Endianness = Endianness;
writer.Write(Reserved);
writer.WriteString(UnityVersion);
writer.WriteInt32((Int32)BuildTarget);
writer.WriteBoolean(IsTypeTreeEnabled);
writer.WriteInt32(SerializedTypes.Length);
foreach (var serializedType in SerializedTypes)
{
writer.WriteInt32(serializedType.ClassID);
writer.WriteBoolean(serializedType.IsStrippedType);
writer.WriteInt16(serializedType.ScriptTypeIndex);
if ((Version < 16 && serializedType.ClassID < 0) ||
(Version >= 16 && serializedType.ClassID == 114))
{
writer.Write(serializedType.ScriptID); //Hash128
}
writer.Write(serializedType.OldTypeHash);
}
writer.WriteInt32(ObjectInfos.Length);
foreach (var objectInfo in ObjectInfos)
{
writer.Align(4);
writer.WriteInt64(objectInfo.PathID);
writer.WriteInt32((Int32)objectInfo.ByteStart);
writer.WriteUInt32(objectInfo.ByteSize);
writer.WriteInt32(objectInfo.TypeID);
}
// Script
int scriptCount = 0;
writer.WriteInt32(scriptCount);
// Externals
int externalCount = 0;
writer.WriteInt32(externalCount);
string userInformation = "";
writer.WriteString(userInformation);
}
internal void Write(EndiannessWriter writer)
{
writer.WriteString(Signature);
writer.WriteInt32(Version);
writer.WriteString(UnityVersion);
writer.WriteString(UnityRevision);
writer.WriteInt64(Size);
writer.WriteInt32(CompressedBlocksInfoSize);
writer.WriteInt32(UncompressedBlocksInfoSize);
writer.WriteInt32(Flags);
}
internal void Write(EndiannessWriter writer)
{
writer.Write(UncompressedDataHash);
writer.WriteInt32(StorageBlocks.Length);
foreach (var storageBlock in StorageBlocks)
{
writer.WriteUInt32(storageBlock.CompressedSize);
writer.WriteUInt32(storageBlock.UncompressedSize);
writer.WriteUInt16(storageBlock.Flags);
}
writer.WriteInt32(Nodes.Length);
foreach (var node in Nodes)
{
writer.WriteInt64(node.Offset);
writer.WriteInt64(node.Size);
writer.WriteUInt32(node.Flags);
writer.WriteString(node.Path);
}
}
internal void Write(EndiannessWriter writer)
{
writer.WriteAlignedString(Name);
writer.WriteInt32(ForcedFallbackFormat);
writer.WriteBoolean(DownscaleFallback);
writer.Align(4);
writer.WriteInt32(Width);
writer.WriteInt32(Height);
writer.WriteInt32(CompleteImageSize);
writer.WriteInt32((Int32)TextureFormat);
writer.WriteInt32(MipCount);
writer.WriteBoolean(IsReadable);
writer.WriteBoolean(IsReadAllowed);
writer.Align(4);
writer.WriteInt32(StreamingMipmapsPriority);
writer.WriteInt32(ImageCount);
writer.WriteInt32(TextureDimension);
writer.WriteInt32(TextureSettings.FilterMode);
writer.WriteInt32(TextureSettings.Aniso);
writer.WriteSingle(TextureSettings.MipBias);
writer.WriteInt32(TextureSettings.WrapMode);
writer.WriteInt32(TextureSettings.WrapV);
writer.WriteInt32(TextureSettings.WrapW);
writer.WriteInt32(LightmapFormat);
writer.WriteInt32(ColorSpace);
writer.WriteInt32(ImageDataSize);
writer.WriteUInt32(StreamData.Offset);
writer.WriteUInt32(StreamData.Size);
writer.WriteAlignedString(StreamData.Path);
}
public static void BuildCounterfeit()
{
const string texturePath = "Assets/Turtle.jpg";
const string textureMetaPath = texturePath + ".meta";
var metaContent = new StringReader(File.ReadAllText(textureMetaPath));
var yaml = new YamlStream();
yaml.Load(metaContent);
var rootNode = yaml.Documents[0].RootNode;
var guidNode = Utility.FindYamlChildNode((YamlMappingNode)rootNode, "guid");
string guid = ((YamlScalarNode)guidNode).Value;
var textureImporterNode = Utility.FindYamlChildNode((YamlMappingNode)rootNode, "TextureImporter");
var assetBundleNameNode = Utility.FindYamlChildNode((YamlMappingNode)textureImporterNode, "assetBundleName");
string assetBundleName = ((YamlScalarNode)assetBundleNameNode).Value;
string cabFilename = Utility.GetCabFilename(assetBundleName);
string cabRessFilename = Utility.GetCabRessFilename(cabFilename);
string archivePath = Utility.GetArchivePath(cabFilename, cabRessFilename);
// TODO: Replace jpeg loading library
var unityTexture2D = AssetDatabase.LoadAssetAtPath <UnityEngine.Texture2D>(texturePath);
byte[] textureRawData = unityTexture2D.GetRawTextureData();
int width = unityTexture2D.width;
int height = unityTexture2D.height;
int textureFileId = 2800000;
Int64 texturePathId = Utility.GetPathId(guid, textureFileId);
var blocksInfoAndDirectory = new BlocksInfoAndDirectory
{
UncompressedDataHash = new byte[16] {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
},
StorageBlocks = new[]
{
new StorageBlock
{
CompressedSize = 302100,
UncompressedSize = 302100,
Flags = 64
}
},
Nodes = new[]
{
new Node
{
Offset = 0,
Size = 4424,
Flags = 4,
Path = cabFilename
},
new Node
{
Offset = 4424,
Size = 297676,
Flags = 0,
Path = cabRessFilename
}
}
};
byte[] compressedBuffer;
int uncompressedSize;
int compressedSize;
using (var memoryStream = new MemoryStream())
using (var memoryBinaryWriter = new BinaryWriter(memoryStream))
using (var endiannessWriterCompressed = new EndiannessWriter(memoryBinaryWriter, Endianness.Big))
{
blocksInfoAndDirectory.Write(endiannessWriterCompressed);
byte[] uncompressedBuffer = memoryStream.ToArray();
uncompressedSize = uncompressedBuffer.Length;
// Assume compressed buffer always smaller than uncompressed
compressedBuffer = new byte[uncompressedSize];
compressedSize = LZ4Codec.Encode
(
uncompressedBuffer,
0,
uncompressedSize,
compressedBuffer,
0,
uncompressedSize,
LZ4Level.L11_OPT
);
compressedBuffer = compressedBuffer.Take(compressedSize).ToArray();
}
var serializedFileHeader = new SerializedFileHeader
{
MetadataSize = 125,
FileSize = 4424,
Version = 17,
DataOffset = 4096,
Endianness = Endianness.Little,
Reserved = new byte[] { 0, 0, 0 },
UnityVersion = "2018.4.20f1\n2",
BuildTarget = BuildTarget.Android,
IsTypeTreeEnabled = false,
SerializedTypes = new[]
{
new SerializedType
{
// https://docs.unity3d.com/Manual/ClassIDReference.html
ClassID = 142,
IsStrippedType = false,
ScriptTypeIndex = -1,
OldTypeHash = new byte[]
{ 151, 218, 95, 70, 136, 228, 90, 87, 200, 180, 45, 79, 66, 73, 114, 151 }
},
new SerializedType
{
ClassID = 28,
IsStrippedType = false,
ScriptTypeIndex = -1,
OldTypeHash = new byte[]
{ 238, 108, 64, 129, 125, 41, 81, 146, 156, 219, 79, 90, 96, 135, 79, 93 }
}
},
ObjectInfos = new[]
{
new ObjectInfo
{
PathID = 1,
ByteStart = 0,
ByteSize = 132,
TypeID = 0
},
new ObjectInfo
{
PathID = texturePathId,
ByteStart = 136,
ByteSize = 192,
TypeID = 1
}
}
};
var assetBundle = new AssetBundle
{
Name = assetBundleName,
PreloadTable = new[]
{
new PPtr {
FileID = 0, PathID = texturePathId
}
},
Container = new[]
{
new KeyValuePair <string, AssetInfo>
(
texturePath.ToLower(),
new AssetInfo
{
PreloadIndex = 0,
PreloadSize = 1,
Asset = new PPtr
{
FileID = 0,
PathID = texturePathId
}
}
)
},
MainAsset = new AssetInfo
{
PreloadIndex = 0,
PreloadSize = 0,
Asset = new PPtr
{
FileID = 0,
PathID = 0
}
},
RuntimeCompatibility = 1,
AssetBundleName = assetBundleName,
DependencyAssetBundleNames = new string[0],
IsStreamedSceneAssetBundle = false,
ExplicitDataLayout = 0,
PathFlags = 7,
SceneHashes = new Dictionary <string, string>()
};
var texture2D = new Texture2D
{
Name = Path.GetFileNameWithoutExtension(texturePath),
ForcedFallbackFormat = (int)TextureFormat.RGBA32,
DownscaleFallback = false,
Width = width,
Height = height,
CompleteImageSize = textureRawData.Length,
TextureFormat = TextureFormat.RGB24,
MipCount = 1,
IsReadable = false,
IsReadAllowed = false,
StreamingMipmapsPriority = 0,
ImageCount = 1,
TextureDimension = 2,
TextureSettings = new GLTextureSettings
{
FilterMode = 1,
Aniso = 1,
MipBias = 0,
WrapMode = 0,
WrapV = 0,
WrapW = 0
},
LightmapFormat = 0,
ColorSpace = 1,
ImageDataSize = 0,
StreamData = new StreamingInfo
{
Offset = 0,
Size = (UInt32)textureRawData.Length,
Path = archivePath
}
};
byte[] serializeFileBuffer;
int metadataSize;
int assetBundleObjectPosition;
int assetBundleObjectOffset;
int assetBundleObjectSize;
int texture2DPosition;
int texture2DOffset;
int texture2DObjectSize;
using (var memoryStream = new MemoryStream())
using (var memoryBinaryWriter = new BinaryWriter(memoryStream))
using (var endiannessWriterStorage = new EndiannessWriter(memoryBinaryWriter, Endianness.Big))
{
serializedFileHeader.Write(endiannessWriterStorage);
metadataSize = (Int32)endiannessWriterStorage.Position;
endiannessWriterStorage.Align((int)serializedFileHeader.DataOffset);
assetBundleObjectPosition = (Int32)endiannessWriterStorage.Position;
assetBundleObjectOffset = (Int32)(assetBundleObjectPosition - serializedFileHeader.DataOffset);
assetBundle.Write(endiannessWriterStorage, serializedFileHeader.Version);
assetBundleObjectSize = (Int32)(endiannessWriterStorage.Position - assetBundleObjectPosition);
// TODO: What is this padding?
endiannessWriterStorage.WriteUInt32(0);
texture2DPosition = (Int32)endiannessWriterStorage.Position;
texture2DOffset = (Int32)(texture2DPosition - serializedFileHeader.DataOffset);
texture2D.Write(endiannessWriterStorage);
texture2DObjectSize = (Int32)(endiannessWriterStorage.Position - texture2DPosition);
endiannessWriterStorage.WriteWithoutEndianness(textureRawData);
// TODO: What is this padding?
endiannessWriterStorage.Write(0);
serializeFileBuffer = memoryStream.ToArray();
}
var header = new UnityHeader
{
Signature = "UnityFS",
Version = 6,
UnityVersion = "5.x.x",
UnityRevision = "2018.4.20f1",
Size = 302235,
CompressedBlocksInfoSize = compressedSize,
UncompressedBlocksInfoSize = uncompressedSize,
Flags = 67
};
using (var fileStream = File.Create("Counterfeit/texture"))
using (var binaryWriter = new BinaryWriter(fileStream))
using (var endiannessWriter = new EndiannessWriter(binaryWriter, Endianness.Big))
{
header.Write(endiannessWriter);
endiannessWriter.WriteWithoutEndianness(compressedBuffer);
endiannessWriter.WriteWithoutEndianness(serializeFileBuffer);
}
}