public byte[] GetPackedFile(JMDPackedFileInfo info)
{
FileStream fs = new FileStream(Path, FileMode.Open);
if (info.CryptMode == CryptMode.None)
{
JMDStreamInfo streaminfo = this.GetStreamInfo(info.Index);
fs.Seek(streaminfo.Offset, SeekOrigin.Begin);
byte[] data = new byte[streaminfo.Size];
fs.Read(data, 0, data.Length);
fs.Close();
return(data);
}
else if (info.CryptMode == CryptMode.FullCryption)
{
JMDStreamInfo streaminfo = this.GetStreamInfo(info.Index);
fs.Seek(streaminfo.Offset, SeekOrigin.Begin);
byte[] data = new byte[streaminfo.Size];
fs.Read(data, 0, data.Length);
fs.Close();
uint key = Crypt.KeyGenerator.GetDataKey(HeaderKey, info);
data = RhoCrypt.Decrypt(data, key);
return(data);
}
else if (info.CryptMode == CryptMode.PartCryption)
{
List <byte> output = new List <byte>();
JMDStreamInfo streaminfo = this.GetStreamInfo(info.Index);
fs.Seek(streaminfo.Offset, SeekOrigin.Begin);
byte[] data = new byte[streaminfo.Size];
fs.Read(data, 0, data.Length);
uint key = Crypt.KeyGenerator.GetDataKey(HeaderKey, info);
data = RhoCrypt.Decrypt(data, key);
output.AddRange(data);
streaminfo = this.GetStreamInfo(info.Index + 1);
fs.Seek(streaminfo.Offset, SeekOrigin.Begin);
data = new byte[streaminfo.Size];
fs.Read(data, 0, data.Length);
output.AddRange(data);
fs.Close();
return(output.ToArray());
}
else
{
fs.Close();
throw new Exception("Unknown CryptMode.");
}
}
public byte[] GetPackedFile(RhoPackedFileInfo info)
{
FileStream fs = new FileStream(Path, FileMode.Open);
if (info.CryptMode == CryptMode.None || (int)info.CryptMode == -1)
{
RhoStreamInfo streaminfo = this.GetStreamInfo(info.Index);
fs.Seek(streaminfo.Offset, SeekOrigin.Begin);
byte[] data = new byte[streaminfo.FileSize];
fs.Read(data, 0, data.Length);
fs.Close();
if (info.CryptMode != CryptMode.None)
{
Debug.Print($"File: {info.FileName} is encrypted by a unsupport encryption method: {info.CryptMode}.");
}
return(data);
}
else if (info.CryptMode == CryptMode.FullCryption)
{
RhoStreamInfo streaminfo = this.GetStreamInfo(info.Index);
fs.Seek(streaminfo.Offset, SeekOrigin.Begin);
byte[] data = new byte[streaminfo.FileSize];
fs.Read(data, 0, data.Length);
fs.Close();
uint key = Crypt.KeyGenerator.GetDataKey(HeaderKey, info);
data = RhoCrypt.Decrypt(data, key);
return(data);
}
else if (info.CryptMode == CryptMode.PartCryption)
{
List <byte> output = new List <byte>();
RhoStreamInfo streaminfo = this.GetStreamInfo(info.Index);
fs.Seek(streaminfo.Offset, SeekOrigin.Begin);
byte[] data = new byte[streaminfo.FileSize];
fs.Read(data, 0, data.Length);
uint key = Crypt.KeyGenerator.GetDataKey(HeaderKey, info);
data = RhoCrypt.Decrypt(data, key);
output.AddRange(data);
streaminfo = this.GetStreamInfo(info.Index + 1);
fs.Seek(streaminfo.Offset, SeekOrigin.Begin);
data = new byte[streaminfo.FileSize];
fs.Read(data, 0, data.Length);
output.AddRange(data);
fs.Close();
return(output.ToArray());
}
else if (info.CryptMode == CryptMode.CompressedNonCryption)
{
RhoStreamInfo streaminfo = this.GetStreamInfo(info.Index);
fs.Seek(streaminfo.Offset, SeekOrigin.Begin);
byte[] data = new byte[(int)streaminfo.FileSize];
byte[] buf = new byte[(int)streaminfo.OriginalSize];
fs.Read(data, 0, (int)streaminfo.FileSize);
fs.Close();
using (MemoryStream ms = new MemoryStream(data))
{
Ionic.Zlib.ZlibStream zs = new ZlibStream(ms, CompressionMode.Decompress);
zs.Read(buf, 0, buf.Length);
Debug.Print($"Method: 01 output:{streaminfo.OriginalSize} totalOutput:{zs.TotalOut}");
}
return(buf);
}
else if (info.CryptMode == CryptMode.CompressedFullCryption)
{
RhoStreamInfo streaminfo = this.GetStreamInfo(info.Index);
fs.Seek(streaminfo.Offset, SeekOrigin.Begin);
byte[] data = new byte[streaminfo.FileSize];
byte[] buf = new byte[(int)streaminfo.OriginalSize];
fs.Read(data, 0, (int)streaminfo.FileSize);
fs.Close();
using (MemoryStream ms = new MemoryStream(data))
{
Ionic.Zlib.ZlibStream zs = new ZlibStream(ms, CompressionMode.Decompress);
zs.Read(buf, 0, buf.Length);
Debug.Print($"Method: 06 output:{streaminfo.OriginalSize} totalOutput:{zs.TotalOut}");
}
uint key = Crypt.KeyGenerator.GetDataKey(HeaderKey, info);
buf = RhoCrypt.Decrypt(buf, key);
return(buf);
}
else
{
fs.Close();
throw new Exception("Unknown CryptMode.");
}
}