public void Dispose() //Faily attempt to reduce memory usage. :[
{
if (_fileBytes != null)
{
_fileBytes = null;
}
if (_fileExtension != null)
{
_fileExtension = null;
}
if (_fileName != null)
{
_fileName = null;
}
if (_filePath != null)
{
_filePath = null;
}
if (_compressedFile != null)
{
_compressedFile = null;
}
if (_decompressedFile != null)
{
_decompressedFile = null;
}
}
/// <summary>
/// Compresses the LZB file.
/// </summary>
/// <param name="clean">True for cleaning up the remains of the decompression.</param>
/// <returns></returns>
public bool Compress(bool clean = true)
{
if (DecompressedFile == null || HeaderFile == null)
{
return(false);
}
if (!DecompressedFile.Exists() || !HeaderFile.Exists())
{
return(false);
}
byte[] buffer;
using (BinaryReader reader = new BinaryReader(new FileStream(HeaderFile.FilePath, FileMode.Open)))
{
buffer = new byte[16];
reader.Read(buffer, 0, 16);
LZSSHeader.Load(buffer);
}
using (BinaryReader reader = new BinaryReader(new FileStream(DecompressedFile.FilePath, FileMode.Open)))
{
int bufferLength = (int)reader.BaseStream.Length;
buffer = new byte[bufferLength];
reader.Read(buffer, 0, bufferLength);
LZSSHeader.UncompressedSize = (uint)bufferLength;
}
byte mode = LZSSHeader.Mode;
if (clean)
{
DecompressedFile.Delete();
DecompressedFile = null;
HeaderFile.Delete();
HeaderFile = null;
}
switch (mode)
{
default:
MessageBox.Show("Not a valid LZSS-bu2 mode number!\nOnly possible modes are 0, 1 and 2.", "Sorry!");
return(false);
case 0:
compress_Mode0(buffer);
break;
case 1:
compress_Mode(buffer, 1, 256);
break;
case 2:
compress_Mode(buffer, 2, 4096);
break;
}
return(true);
}
/// <summary>
/// Disassemble the .unity3d file.
/// </summary>
public void Disassemble()
{
_compressedFile.ReadFile();
_compressedFile.FileReader.BaseStream.Position = _compressedFile.Header.CompressedFileHeaderSize;
byte[] compressed_file_body = _compressedFile.FileReader.ReadByteArray(_compressedFile.Header.CompressedFileSizeWithoutHeader); //Get the body of the compressed file
ConsoleIO.Log("Decompressing the .unity3d with Lzma...");
_decompressedFile = new DecompressedFile(LzmaUtils.Decompress(compressed_file_body));
_decompressedFile.ReadFile();
}
/// <summary>
/// Start assembling the files into a .unity3d webarchive.
/// </summary>
public void Assemble()
{
DecompressedFile.WriteFile();
byte[] compressedbody = Compression.LZMA.LzmaUtils.Compress(((MemoryStream)DecompressedFile.FileWriter.BaseStream).ToArray());
CompressedFile.Header.BuildVerison = 3;
CompressedFile.Header.WebPlayerVersion = "3.x.x";
CompressedFile.Header.UnityEngineVersion = "4.5.1f3";
CompressedFile.Header.CompressedFileSize = compressedbody.Length;
CompressedFile.Header.CompressedFileHeaderSize = 60;
CompressedFile.Header.CompressedFileSizeWithoutHeader = compressedbody.Length - CompressedFile.Header.CompressedFileHeaderSize;
CompressedFile.Header.DecompressedFileSize = ((MemoryStream)DecompressedFile.FileWriter.BaseStream).ToArray().Length;
CompressedFile.Header.CompressedFileSize2 = compressedbody.Length;
CompressedFile.Header.DecompressedFileHeaderSize = DecompressedFile.Header.Files[0].Offset;
CompressedFile.WriteFile(compressedbody);
}
/// <summary>
/// Try to disassemble the .unity3d file.
/// </summary>
/// <param name="timesToTry">Times to try</param>
public void BurteForceDisassemble(int timesToTry)
{
ConsoleIO.WriteLine("Brute force disassembling file.");
byte[] buf = null;
for (int i = 0; i < timesToTry; i++)
{
try
{
buf = new byte[_compressedFile.Bytes.Length - i];
Buffer.BlockCopy(_compressedFile.Bytes, i, buf, 0, buf.Length);
LzmaUtils.Decompress(buf);
ConsoleIO.WriteLine("Was able to decompress file at offset: " + i.ToString("X"));
_decompressedFile = new DecompressedFile(LzmaUtils.Decompress(buf));
break;
}
catch { }
ConsoleIO.WriteLine("Failed to brute force unpack file. Tried: " + i.ToString(), ConsoleIO.LogType.Error);
}
}
