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]; //is this ok?
for (;;)
{
int nRead = decoder.Read(filebuffer, 0, uncompressedSize);
if (nRead == 0)
{
break;
}
}
}
}
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 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;
}
}
private void readBundle(EndianStream b_Stream)
{
var header = b_Stream.ReadStringToNull();
if (header == "UnityWeb" || header == "UnityRaw" || header == "\xFA\xFA\xFA\xFA\xFA\xFA\xFA\xFA")
{
ver1 = b_Stream.ReadInt32();
ver2 = b_Stream.ReadStringToNull();
ver3 = b_Stream.ReadStringToNull();
if (ver1 < 6)
{
int bundleSize = b_Stream.ReadInt32();
}
else
{
long bundleSize = b_Stream.ReadInt64();
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 (header)
{
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(SevenZip.Compression.LZMA.SevenZipHelper.StreamDecompress(new MemoryStream(lzmaBuffer)), EndianType.BigEndian))
{
getFiles(lzmaStream, 0);
}
break;
}
case "UnityRaw":
{
getFiles(b_Stream, offset);
break;
}
}
}
else if (header == "UnityFS")
{
ver1 = b_Stream.ReadInt32();
ver2 = b_Stream.ReadStringToNull();
ver3 = b_Stream.ReadStringToNull();
long bundleSize = b_Stream.ReadInt64();
}
}
public AssetsFile(string fileName, EndianStream fileStream)
{
//if (memFile != null) { Stream = new EndianStream(memFile, endianType); }
//else { Stream = new EndianStream(File.OpenRead(fileName), endianType); }
a_Stream = fileStream;
filePath = fileName;
int tableSize = a_Stream.ReadInt32();
int dataEnd = a_Stream.ReadInt32();
fileGen = a_Stream.ReadInt32();
int dataOffset = a_Stream.ReadInt32();
sharedAssetsList[0].fileName = Path.GetFileName(fileName); //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 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 version!", "AssetStudio 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 = "Unt 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 21: platformStr = "WP8"; break;
case 25: platformStr = "Linux"; 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();
StringBuilder cb = new StringBuilder();
for (int m = 0; m < memberCount; m++)
{
readBase(cb, 1);
}
var aClass = new ClassStrStruct()
{
ID = classID, Text = (baseType + " " + baseName), members = cb.ToString()
};
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.ToString(); //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.ReadInt32();
asset.Offset += dataOffset;
asset.Size = a_Stream.ReadInt32();
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;
}
}
if (UnityClassID.Names[asset.Type2] != null)
{
asset.TypeString = UnityClassID.Names[asset.Type2];
}
asset.uniqueID = i.ToString(assetIDfmt);
asset.exportSize = asset.Size;
asset.sourceFile = this;
preloadTable.Add(asset.m_PathID, asset);
#region read BuildSettings to get version for 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(new string[] { ".", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9" }, StringSplitOptions.RemoveEmptyEntries);
string[] strver = (m_Version.Split(new string[] { ".", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "\n" }, StringSplitOptions.RemoveEmptyEntries));
version = Array.ConvertAll(strver, int.Parse);
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);
}
}