public static void UnpackSng(Stream input, Stream output, Platform platform)
{
EndianBitConverter conv = platform.GetBitConverter;
using (var decrypted = new MemoryStream())
using (var brDec = new EndianBinaryReader(conv, decrypted)) {
byte[] key;
switch (platform.platform)
{
case GamePlatform.Mac:
key = RijndaelEncryptor.SngKeyMac;
break;
case GamePlatform.Pc: //PC
key = RijndaelEncryptor.SngKeyPC;
break;
default:
key = null;
break;
}
if (key != null)
{
RijndaelEncryptor.DecryptSngData(input, decrypted, key, conv);
}
else
{
input.CopyTo(decrypted);
decrypted.Seek(8, SeekOrigin.Begin);
}
//unZip
long plainLen = brDec.ReadUInt32();
ushort xU = brDec.ReadUInt16();
decrypted.Position -= 2;
if (xU == 0x78DA || xU == 0xDA78)//LE 55928 //BE 30938
{
RijndaelEncryptor.Unzip(decrypted, output, false);
}
}
}
/// <summary>
/// Inflates selected entry.
/// </summary>
/// <param name="entry">Entry to unpack.</param>
/// <param name = "destfilepath">Destination file used instead of the temp file.</param>
public void InflateEntry(Entry entry, string destfilepath = "")
{
if (entry.Length == 0)
{
return; //skip empty files
}
// Decompress Entry
const int zHeader = 0x78DA;
uint zChunkID = entry.zIndexBegin;
int blockSize = (int)_header.BlockSizeAlloc;
//bool isZlib = _header.CompressionMethod == 2053925218;
if (destfilepath.Length > 0)
{
entry.Data = new FileStream(destfilepath, FileMode.Create, FileAccess.Write, FileShare.Read);
}
else
{
entry.Data = new TempFileStream();
}
_reader.BaseStream.Position = (long)entry.Offset;
do
{
// check for corrupt CDLC content and catch exceptions
try
{
if (_zBlocksSizeList[zChunkID] == 0U) // raw. full cluster used.
{
entry.Data.Write(_reader.ReadBytes(blockSize), 0, blockSize);
}
else
{
var num = _reader.ReadUInt16();
_reader.BaseStream.Position -= 2L;
var array = _reader.ReadBytes((int)_zBlocksSizeList[zChunkID]);
if (num == zHeader)
{
// compressed
try
{
RijndaelEncryptor.Unzip(array, entry.Data, false);
}
catch (Exception ex)//IOException
{
// corrupt CDLC zlib.net exception ... try to unpack
if (String.IsNullOrEmpty(entry.Name))
{
ErrMSG = String.Format(@"{1}CDLC contains a zlib exception.{1}Warning: {0}{1}", ex.Message, Environment.NewLine);
}
else
{
ErrMSG = String.Format(@"{2}CDLC contains a broken datachunk in file '{0}'.{2}Warning: {1}{2}", entry.Name.Split('/').Last(), ex.Message, Environment.NewLine);
}
Console.Write(ErrMSG);
}
}
else // raw. used only for data(chunks) smaller than 64 kb
{
entry.Data.Write(array, 0, array.Length);
}
}
zChunkID += 1;
}
catch (Exception ex) // index is outside the bounds of the array
{
// corrupt CDLC data length ... try to unpack
ErrMSG = String.Format(@"{2}CDLC contains a broken datachunk in file '{0}'.{2}Warning: {1}{2}", entry.Name.Split('/').Last(), ex.Message, Environment.NewLine);
Console.Write(ErrMSG + Environment.NewLine);
break;
}
} while (entry.Data.Length < (long)entry.Length);
entry.Data.Seek(0, SeekOrigin.Begin);
entry.Data.Flush();
}
/// <summary>
/// Inflates selected entry.
/// </summary>
/// <param name="entry">Enty to unpack.</param>
/// <param name = "destfilepath">Destanation file used instead of the temp file.</param>
public void InflateEntry(Entry entry, string destfilepath = "")
{
if (entry.Length > 0)
{// Decompress Entry
uint zChunkID = entry.zIndexBegin;
int blockSize = (int)this.header.blockSizeAlloc;
bool isZlib = this.header.CompressionMethod == 2053925218;
const int zHeader = 0x78DA;
if (destfilepath.Length > 0)
{
entry.Data = new FileStream(destfilepath, FileMode.Create, FileAccess.Write, FileShare.Read);
}
else
{
entry.Data = new TempFileStream();
}
var data = entry.Data;
_reader.BaseStream.Position = (long)entry.Offset;
do
{
// check for corrupt CDLC content and catch exceptions
try
{
if (this.zBlocksSizeList[zChunkID] == 0)
{
// raw
byte[] array = _reader.ReadBytes(blockSize);
data.Write(array, 0, blockSize);
}
else
{
var num = _reader.ReadUInt16();
_reader.BaseStream.Position -= 2;
byte[] array = _reader.ReadBytes((int)this.zBlocksSizeList[zChunkID]);
if (num == zHeader)
{
// compressed
try
{
RijndaelEncryptor.Unzip(array, data, false);
}
catch (Exception ex)
{
// corrupt CDLC zlib.net exception ... try to unpack
if (String.IsNullOrEmpty(entry.Name))
{
ErrMSG = String.Format(@"{1}CDLC contains a zlib exception.{1}Warning: {0}{1}", ex.Message, Environment.NewLine);
}
else
{
ErrMSG = String.Format(@"{2}CDLC contains a broken datachunk in file '{0}'.{2}Warning: {1}{2}", entry.Name.Split('/').Last(), ex.Message, Environment.NewLine);
}
Console.Write(ErrMSG);
// TODO: requires proper presizing of array length
// data.Write(new byte[array.Length], 0, array.Length);
}
}
else
{
// raw. used only after 0?
data.Write(array, 0, array.Length);
}
}
zChunkID += 1;
}
catch (Exception ex) // index is outside the bounds of the array
{
// corrupt CDLC data length ... try to unpack
ErrMSG = String.Format(@"{2}CDLC contains a broken datachunk in file '{0}'.{2}Warning: {1}{2}", entry.Name.Split('/').Last(), ex.Message, Environment.NewLine);
Console.Write(ErrMSG + Environment.NewLine);
break;
}
}while (data.Length < (long)entry.Length);
data.Seek(0, SeekOrigin.Begin);
data.Flush();
}
}