private NadeoPak(byte[] key)
{
Key = key;
Folders = new List <NadeoPakFolder>();
Files = new List <NadeoPakFile>();
Stream = null !;
blowfish = null !;
files = null !;
}
public byte[]? GetData()
{
if (data is not null)
{
return(data);
}
owner.Stream.Position = owner.DataStart + Offset;
var roundedDataSize = 8 + CompressedSize;
if ((roundedDataSize & 7) != 0)
{
roundedDataSize = (roundedDataSize & ~7) + 8;
}
var buffer = new byte[roundedDataSize];
owner.Stream.Read(buffer, 0, buffer.Length);
using var ms = new MemoryStream(buffer);
using var r = new GameBoxReader(ms);
var iv = r.ReadUInt64();
using var blowfish = new BlowfishCBCStream(ms, owner.Key, iv);
if (IsCompressed)
{
using var deflate = new CompressedStream(blowfish, CompressionMode.Decompress);
using var rr = new GameBoxReader(deflate);
try
{
data = rr.ReadBytes(UncompressedSize); // CopyTo nefunguje xd
}
catch (InvalidDataException)
{
}
}
else
{
using var rr = new GameBoxReader(blowfish);
data = rr.ReadBytes(UncompressedSize); // CopyTo nefunguje xd
}
return(data);
}
private void Read(GameBoxReader r)
{
if (!r.HasMagic("NadeoPak"))
{
throw new Exception("Not a pak file.");
}
Version = r.ReadInt32();
var headerIV = r.ReadUInt64();
using (blowfish = new BlowfishCBCStream(r.BaseStream, Key, headerIV))
using (var rr = new GameBoxReader(blowfish))
{
ReadEncrypted(rr);
}
}
private void ReadMetadata()
{
Stream.Position = MetadataStart;
using var reader = new GameBoxReader(Stream);
var iv = reader.ReadUInt64();
using (blowfish = new BlowfishCBCStream(Stream, Key, iv))
using (var deflate = new CompressedStream(blowfish, CompressionMode.Decompress))
using (var r = new GameBoxReader(deflate))
{
int fileIndex;
do
{
fileIndex = r.ReadInt32();
var header = new GameBoxHeaderInfo(r);
}while (fileIndex != -1);
}
}
