private void getFiles(EndianStream f_Stream, int offset)
{
int fileCount = f_Stream.ReadInt32();
for (int i = 0; i < fileCount; i++)
{
MemoryAssetsFile memFile = new MemoryAssetsFile();
memFile.fileName = f_Stream.ReadStringToNull();
int fileOffset = f_Stream.ReadInt32();
fileOffset += offset;
int fileSize = f_Stream.ReadInt32();
long nextFile = f_Stream.Position;
f_Stream.Position = fileOffset;
byte[] buffer = new byte[fileSize];
f_Stream.Read(buffer, 0, fileSize);
memFile.memStream = new MemoryStream(buffer);
MemoryAssetsFileList.Add(memFile);
f_Stream.Position = nextFile;
}
}
public BundleFile(string fileName)
{
if (Path.GetExtension(fileName) == ".lz4")
{
byte[] filebuffer;
using (BinaryReader lz4Stream = new BinaryReader(File.OpenRead(fileName)))
{
int version = lz4Stream.ReadInt32();
int uncompressedSize = lz4Stream.ReadInt32();
int compressedSize = lz4Stream.ReadInt32();
int something = lz4Stream.ReadInt32(); //1
byte[] lz4buffer = new byte[compressedSize];
lz4Stream.Read(lz4buffer, 0, compressedSize);
using (var inputStream = new MemoryStream(lz4buffer))
{
var decoder = new Lz4DecoderStream(inputStream);
filebuffer = new byte[uncompressedSize];
decoder.Read(filebuffer, 0, uncompressedSize);
decoder.Dispose();
}
}
using (var b_Stream = new EndianStream(new MemoryStream(filebuffer), EndianType.BigEndian))
{
readBundle(b_Stream);
}
}
else
{
using (var b_Stream = new EndianStream(File.OpenRead(fileName), EndianType.BigEndian))
{
readBundle(b_Stream);
}
}
}
private static byte[] ReadSerializedShader(List <ClassMember> members, EndianStream a_Stream)
{
var offsets = new List <uint>();
var compressedLengths = new List <uint>();
var decompressedLengths = new List <uint>();
for (int i = 0; i < members.Count; i++)
{
var member = members[i];
var level = member.Level;
var varTypeStr = member.Type;
if (member.Name == "offsets")
{
var offsets_size = a_Stream.ReadInt32();
for (int j = 0; j < offsets_size; j++)
{
offsets.Add(a_Stream.ReadUInt32());
}
var compressedLengths_size = a_Stream.ReadInt32();
for (int j = 0; j < compressedLengths_size; j++)
{
compressedLengths.Add(a_Stream.ReadUInt32());
}
var decompressedLengths_size = a_Stream.ReadInt32();
for (int j = 0; j < decompressedLengths_size; j++)
{
decompressedLengths.Add(a_Stream.ReadUInt32());
}
var compressedBlob = a_Stream.ReadBytes(a_Stream.ReadInt32());
var decompressedStream = new MemoryStream();
for (int j = 0; j < offsets.Count; j++)
{
var compressedBytes = new byte[compressedLengths[j]];
Array.Copy(compressedBlob, offsets[j], compressedBytes, 0, compressedLengths[j]);
var decompressedBytes = new byte[decompressedLengths[j]];
using (var mstream = new MemoryStream(compressedBytes))
{
var decoder = new Lz4DecoderStream(mstream);
decoder.Read(decompressedBytes, 0, (int)decompressedLengths[j]);
decoder.Dispose();
}
decompressedStream.Write(decompressedBytes, 0, decompressedBytes.Length);
}
var decompressedBlob = decompressedStream.ToArray();
return(decompressedBlob);
}
var align = (member.Flag & 0x4000) != 0;
if (varTypeStr == "SInt8")//sbyte
{
a_Stream.ReadSByte();
}
else if (varTypeStr == "UInt8")//byte
{
a_Stream.ReadByte();
}
else if (varTypeStr == "short" || varTypeStr == "SInt16")//Int16
{
a_Stream.ReadInt16();
}
else if (varTypeStr == "UInt16" || varTypeStr == "unsigned short")//UInt16
{
a_Stream.ReadUInt16();
}
else if (varTypeStr == "int" || varTypeStr == "SInt32")//Int32
{
a_Stream.ReadInt32();
}
else if (varTypeStr == "UInt32" || varTypeStr == "unsigned int")//UInt32
{
a_Stream.ReadUInt32();
}
else if (varTypeStr == "long long" || varTypeStr == "SInt64")//Int64
{
a_Stream.ReadInt64();
}
else if (varTypeStr == "UInt64" || varTypeStr == "unsigned long long")//UInt64
{
a_Stream.ReadUInt64();
}
else if (varTypeStr == "float")//float
{
a_Stream.ReadSingle();
}
else if (varTypeStr == "double")//double
{
a_Stream.ReadDouble();
}
else if (varTypeStr == "bool")//bool
{
a_Stream.ReadBoolean();
}
else if (varTypeStr == "string")//string
{
a_Stream.ReadAlignedString(a_Stream.ReadInt32());
i += 3; //skip
}
else if (varTypeStr == "Array") //Array
{
if ((members[i - 1].Flag & 0x4000) != 0)
{
align = true;
}
var size = a_Stream.ReadInt32();
var array = AssetPreloadData.ReadArray(members, level, i);
for (int j = 0; j < size; j++)
{
ReadSerializedShader(array, a_Stream);
}
i += array.Count + 1;//skip
}
else
{
align = false;
}
if (align)
{
a_Stream.AlignStream(4);
}
}
return(null);
}
public AssetsFile(string fullName, EndianStream fileStream)
{
a_Stream = fileStream;
filePath = fullName;
fileName = Path.GetFileName(fullName);
try
{
int tableSize = a_Stream.ReadInt32();
int dataEnd = a_Stream.ReadInt32();
fileGen = a_Stream.ReadInt32();
uint dataOffset = a_Stream.ReadUInt32();
sharedAssetsList[0].fileName = Path.GetFileName(fullName); //reference itself because sharedFileIDs start from 1
switch (fileGen)
{
case 6: //2.5.0 - 2.6.1
{
a_Stream.Position = (dataEnd - tableSize);
a_Stream.Position += 1;
break;
}
case 7: //3.0.0 beta
{
a_Stream.Position = (dataEnd - tableSize);
a_Stream.Position += 1;
m_Version = a_Stream.ReadStringToNull();
break;
}
case 8: //3.0.0 - 3.4.2
{
a_Stream.Position = (dataEnd - tableSize);
a_Stream.Position += 1;
m_Version = a_Stream.ReadStringToNull();
platform = a_Stream.ReadInt32();
break;
}
case 9: //3.5.0 - 4.6.x
{
a_Stream.Position += 4; //azero
m_Version = a_Stream.ReadStringToNull();
platform = a_Stream.ReadInt32();
break;
}
case 14: //5.0.0 beta and final
case 15: //5.0.1 - 5.4
case 16: //??.. no sure
case 17: //5.5.0 and up
{
a_Stream.Position += 4; //azero
m_Version = a_Stream.ReadStringToNull();
platform = a_Stream.ReadInt32();
baseDefinitions = a_Stream.ReadBoolean();
break;
}
default:
{
//MessageBox.Show("Unsupported Unity version!" + fileGen, "Unity Studio Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
if (platform > 255 || platform < 0)
{
byte[] b32 = BitConverter.GetBytes(platform);
Array.Reverse(b32);
platform = BitConverter.ToInt32(b32, 0);
//endianType = EndianType.LittleEndian;
a_Stream.endian = EndianType.LittleEndian;
}
switch (platform)
{
case -2:
platformStr = "Unity Package";
break;
case 4:
platformStr = "OSX";
break;
case 5:
platformStr = "PC";
break;
case 6:
platformStr = "Web";
break;
case 7:
platformStr = "Web streamed";
break;
case 9:
platformStr = "iOS";
break;
case 10:
platformStr = "PS3";
break;
case 11:
platformStr = "Xbox 360";
break;
case 13:
platformStr = "Android";
break;
case 16:
platformStr = "Google NaCl";
break;
case 19:
platformStr = "CollabPreview";
break;
case 21:
platformStr = "WP8";
break;
case 25:
platformStr = "Linux";
break;
case 29:
platformStr = "Wii U";
break;
default:
platformStr = "Unknown Platform";
break;
}
int baseCount = a_Stream.ReadInt32();
for (int i = 0; i < baseCount; i++)
{
if (fileGen < 14)
{
int classID = a_Stream.ReadInt32();
string baseType = a_Stream.ReadStringToNull();
string baseName = a_Stream.ReadStringToNull();
a_Stream.Position += 20;
int memberCount = a_Stream.ReadInt32();
var cb = new List <ClassMember>();
for (int m = 0; m < memberCount; m++)
{
readBase(cb, 1);
}
var aClass = new ClassStruct()
{
ID = classID, Text = (baseType + " " + baseName), members = cb
};
aClass.SubItems.Add(classID.ToString());
ClassStructures.Add(classID, aClass);
}
else
{
readBase5();
}
}
if (fileGen >= 7 && fileGen < 14)
{
a_Stream.Position += 4; //azero
}
int assetCount = a_Stream.ReadInt32();
#region asset preload table
string assetIDfmt = "D" + assetCount.ToString().Length; //format for unique ID
for (int i = 0; i < assetCount; i++)
{
//each table entry is aligned individually, not the whole table
if (fileGen >= 14)
{
a_Stream.AlignStream(4);
}
AssetPreloadData asset = new AssetPreloadData();
if (fileGen < 14)
{
asset.m_PathID = a_Stream.ReadInt32();
}
else
{
asset.m_PathID = a_Stream.ReadInt64();
}
asset.Offset = a_Stream.ReadUInt32();
asset.Offset += dataOffset;
asset.Size = a_Stream.ReadInt32();
if (fileGen > 15)
{
int index = a_Stream.ReadInt32();
asset.Type1 = classIDs[index][0];
asset.Type2 = (ushort)classIDs[index][1];
}
else
{
asset.Type1 = a_Stream.ReadInt32();
asset.Type2 = a_Stream.ReadUInt16();
a_Stream.Position += 2;
}
if (fileGen == 15)
{
byte unknownByte = a_Stream.ReadByte();
//this is a single byte, not an int32
//the next entry is aligned after this
//but not the last!
if (unknownByte != 0)
{
//bool investigate = true;
}
}
string typeString;
if (ClassIDReference.Names.TryGetValue(asset.Type2, out typeString))
{
asset.TypeString = typeString;
}
else
{
asset.TypeString = "Unknown Type " + asset.Type2;
}
asset.uniqueID = i.ToString(assetIDfmt);
asset.sourceFile = this;
preloadTable.Add(asset.m_PathID, asset);
#region read BuildSettings to get version for unity 2.x files
if (asset.Type2 == 141 && fileGen == 6)
{
long nextAsset = a_Stream.Position;
BuildSettings BSettings = new BuildSettings(asset);
m_Version = BSettings.m_Version;
a_Stream.Position = nextAsset;
}
#endregion
}
#endregion
buildType = m_Version.Split(buildTypeSplit, StringSplitOptions.RemoveEmptyEntries);
var strver = from Match m in Regex.Matches(m_Version, @"[0-9]") select m.Value;
version = Array.ConvertAll(strver.ToArray(), int.Parse);
if (version[0] == 2 && version[1] == 0 && version[2] == 1 && version[3] == 7)//2017.x
{
var nversion = new int[version.Length - 3];
nversion[0] = 2017;
Array.Copy(version, 4, nversion, 1, version.Length - 4);
version = nversion;
}
if (fileGen >= 14)
{
//this looks like a list of assets that need to be preloaded in memory before anytihng else
int someCount = a_Stream.ReadInt32();
for (int i = 0; i < someCount; i++)
{
int num1 = a_Stream.ReadInt32();
a_Stream.AlignStream(4);
long m_PathID = a_Stream.ReadInt64();
}
}
int sharedFileCount = a_Stream.ReadInt32();
for (int i = 0; i < sharedFileCount; i++)
{
UnityShared shared = new UnityShared();
shared.aName = a_Stream.ReadStringToNull();
a_Stream.Position += 20;
string sharedFileName = a_Stream.ReadStringToNull(); //relative path
shared.fileName = sharedFileName.Replace("/", "\\");
sharedAssetsList.Add(shared);
}
valid = true;
}
catch
{
}
}
private void readBundle(EndianStream b_Stream)
{
var signature = b_Stream.ReadStringToNull();
if (signature == "UnityWeb" || signature == "UnityRaw" || signature == "\xFA\xFA\xFA\xFA\xFA\xFA\xFA\xFA")
{
format = b_Stream.ReadInt32();
versionPlayer = b_Stream.ReadStringToNull();
versionEngine = b_Stream.ReadStringToNull();
if (format < 6)
{
int bundleSize = b_Stream.ReadInt32();
}
else if (format == 6)
{
ReadFormat6(b_Stream, true);
return;
}
short dummy2 = b_Stream.ReadInt16();
int offset = b_Stream.ReadInt16();
int dummy3 = b_Stream.ReadInt32();
int lzmaChunks = b_Stream.ReadInt32();
int lzmaSize = 0;
long streamSize = 0;
for (int i = 0; i < lzmaChunks; i++)
{
lzmaSize = b_Stream.ReadInt32();
streamSize = b_Stream.ReadInt32();
}
b_Stream.Position = offset;
switch (signature)
{
case "\xFA\xFA\xFA\xFA\xFA\xFA\xFA\xFA": //.bytes
case "UnityWeb":
{
byte[] lzmaBuffer = new byte[lzmaSize];
b_Stream.Read(lzmaBuffer, 0, lzmaSize);
using (var lzmaStream = new EndianStream(SevenZipHelper.StreamDecompress(new MemoryStream(lzmaBuffer)), EndianType.BigEndian))
{
getFiles(lzmaStream, 0);
}
break;
}
case "UnityRaw":
{
getFiles(b_Stream, offset);
break;
}
}
}
else if (signature == "UnityFS")
{
format = b_Stream.ReadInt32();
versionPlayer = b_Stream.ReadStringToNull();
versionEngine = b_Stream.ReadStringToNull();
if (format == 6)
{
ReadFormat6(b_Stream);
}
}
}
private void ReadFormat6(EndianStream b_Stream, bool padding = false)
{
var bundleSize = b_Stream.ReadInt64();
int compressedSize = b_Stream.ReadInt32();
int uncompressedSize = b_Stream.ReadInt32();
int flag = b_Stream.ReadInt32();
if (padding)
{
b_Stream.ReadByte();
}
byte[] blocksInfoBytes;
if ((flag & 0x80) != 0)//at end of file
{
var position = b_Stream.Position;
b_Stream.Position = b_Stream.BaseStream.Length - compressedSize;
blocksInfoBytes = b_Stream.ReadBytes(compressedSize);
b_Stream.Position = position;
}
else
{
blocksInfoBytes = b_Stream.ReadBytes(compressedSize);
}
EndianStream blocksInfo;
switch (flag & 0x3F)
{
default: //None
{
blocksInfo = new EndianStream(new MemoryStream(blocksInfoBytes), EndianType.BigEndian);
break;
}
case 1: //LZMA
{
blocksInfo = new EndianStream(SevenZipHelper.StreamDecompress(new MemoryStream(blocksInfoBytes)), EndianType.BigEndian);
break;
}
case 2: //LZ4
case 3: //LZ4HC
{
byte[] uncompressedBytes = new byte[uncompressedSize];
using (var mstream = new MemoryStream(blocksInfoBytes))
{
var decoder = new Lz4DecoderStream(mstream);
decoder.Read(uncompressedBytes, 0, uncompressedSize);
decoder.Dispose();
}
blocksInfo = new EndianStream(new MemoryStream(uncompressedBytes), EndianType.BigEndian);
break;
}
//case 4:LZHAM?
}
using (blocksInfo)
{
blocksInfo.Position = 0x10;
int blockcount = blocksInfo.ReadInt32();
EndianStream assetsData;
var assetsDataStream = new MemoryStream();
for (int i = 0; i < blockcount; i++)
{
uncompressedSize = blocksInfo.ReadInt32();
compressedSize = blocksInfo.ReadInt32();
flag = blocksInfo.ReadInt16();
var compressedBytes = b_Stream.ReadBytes(compressedSize);
switch (flag & 0x3F)
{
default: //None
{
assetsDataStream.Write(compressedBytes, 0, compressedSize);
break;
}
case 1: //LZMA
{
var uncompressedBytes = new byte[uncompressedSize];
using (var mstream = new MemoryStream(compressedBytes))
{
var decoder = SevenZipHelper.StreamDecompress(mstream, uncompressedSize);
decoder.Read(uncompressedBytes, 0, uncompressedSize);
decoder.Dispose();
}
assetsDataStream.Write(uncompressedBytes, 0, uncompressedSize);
break;
}
case 2: //LZ4
case 3: //LZ4HC
{
var uncompressedBytes = new byte[uncompressedSize];
using (var mstream = new MemoryStream(compressedBytes))
{
var decoder = new Lz4DecoderStream(mstream);
decoder.Read(uncompressedBytes, 0, uncompressedSize);
decoder.Dispose();
}
assetsDataStream.Write(uncompressedBytes, 0, uncompressedSize);
break;
}
//case 4:LZHAM?
}
}
assetsData = new EndianStream(assetsDataStream, EndianType.BigEndian);
using (assetsData)
{
var entryinfo_count = blocksInfo.ReadInt32();
for (int i = 0; i < entryinfo_count; i++)
{
var memFile = new MemoryAssetsFile();
var entryinfo_offset = blocksInfo.ReadInt64();
var entryinfo_size = blocksInfo.ReadInt64();
var unknown = blocksInfo.ReadInt32();
memFile.fileName = blocksInfo.ReadStringToNull();
assetsData.Position = entryinfo_offset;
var buffer = new byte[entryinfo_size];
assetsData.Read(buffer, 0, (int)entryinfo_size);
memFile.memStream = new MemoryStream(buffer);
MemoryAssetsFileList.Add(memFile);
}
}
}
}
private static void Read(StringBuilder sb, List <ClassMember> members, EndianStream a_Stream)
{
for (int i = 0; i < members.Count; i++)
{
var member = members[i];
var level = member.Level;
var varTypeStr = member.Type;
var varNameStr = member.Name;
object value = null;
var align = (member.Flag & 0x4000) != 0;
var append = true;
if (varTypeStr == "SInt8")//sbyte
{
value = a_Stream.ReadSByte();
}
else if (varTypeStr == "UInt8")//byte
{
value = a_Stream.ReadByte();
}
else if (varTypeStr == "short" || varTypeStr == "SInt16")//Int16
{
value = a_Stream.ReadInt16();
}
else if (varTypeStr == "UInt16" || varTypeStr == "unsigned short")//UInt16
{
value = a_Stream.ReadUInt16();
}
else if (varTypeStr == "int" || varTypeStr == "SInt32")//Int32
{
value = a_Stream.ReadInt32();
}
else if (varTypeStr == "UInt32" || varTypeStr == "unsigned int")//UInt32
{
value = a_Stream.ReadUInt32();
}
else if (varTypeStr == "long long" || varTypeStr == "SInt64")//Int64
{
value = a_Stream.ReadInt64();
}
else if (varTypeStr == "UInt64" || varTypeStr == "unsigned long long")//UInt64
{
value = a_Stream.ReadUInt64();
}
else if (varTypeStr == "float")//float
{
value = a_Stream.ReadSingle();
}
else if (varTypeStr == "double")//double
{
value = a_Stream.ReadDouble();
}
else if (varTypeStr == "bool")//bool
{
value = a_Stream.ReadBoolean();
}
else if (varTypeStr == "string")//string
{
append = false;
var str = a_Stream.ReadAlignedString(a_Stream.ReadInt32());
sb.AppendFormat("{0}{1} {2} = \"{3}\"\r\n", (new string('\t', level)), varTypeStr, varNameStr, str);
i += 3; //skip
}
else if (varTypeStr == "Array") //Array
{
append = false;
if ((members[i - 1].Flag & 0x4000) != 0)
{
align = true;
}
sb.AppendFormat("{0}{1} {2}\r\n", (new string('\t', level)), varTypeStr, varNameStr);
var size = a_Stream.ReadInt32();
sb.AppendFormat("{0}{1} {2} = {3}\r\n", (new string('\t', level)), "int", "size", size);
var array = ReadArray(members, level, i);
for (int j = 0; j < size; j++)
{
sb.AppendFormat("{0}[{1}]\r\n", (new string('\t', level + 1)), j);
Read(sb, array, a_Stream);
}
i += array.Count + 1;//skip
}
else
{
append = false;
align = false;
sb.AppendFormat("{0}{1} {2}\r\n", (new string('\t', level)), varTypeStr, varNameStr);
}
if (append)
{
sb.AppendFormat("{0}{1} {2} = {3}\r\n", (new string('\t', level)), varTypeStr, varNameStr, value);
}
if (align)
{
a_Stream.AlignStream(4);
}
}
}
