/// <summary>
/// Releases unmanaged and - optionally - managed resources.
/// </summary>
/// <exception cref="System.ObjectDisposedException">PK2Archive</exception>
public void Dispose()
{
if (IsDisposed || IsDisposing)
{
throw new ObjectDisposedException("PK2Archive");
}
IsDisposing = true;
BlowfishUtilities.SetBlowfish(null);
IO.FileAdapter.SetInstance(null);
Header = null;
Config = null;
Blocks = null;
Loaded = false;
_directories = null;
_files = null;
_navigator = null;
IsDisposing = false;
IsDisposed = true;
}
/// <summary>
/// Initializes a new instance of the <see cref="PK2Archive"/> class.
/// The key is set to the isro standard encryption key.
/// Do not provide any baseKey, if you wish to use the default base key for the archive.
/// </summary>
/// <exception cref="System.IO.FileNotFoundException"></exception>
/// <exception cref="SlimPK2.Security.BlowfishSecurityException"></exception>
/// <exception cref="SlimPK2.Types.InvalidHeaderException"></exception>
public PK2Archive(string path, PK2Config config = null)
{
if (!File.Exists(path))
{
throw new FileNotFoundException(path);
}
//Initialize default config
if (config == null)
{
config = PK2Config.GetDefault();
}
//assign the config to this instance
Config = config;
//Create file reader...
FileAdapter.SetInstance(new FileAdapter(path));
Path = path;
//Read header...
Header = new PK2Header(FileAdapter.GetInstance().ReadData(0, 256));
if (Header.Encrypted)
{
var blowfishKey = BlowfishUtilities.GenerateFinalBlowfishKey(Config.Key, Config.BaseKey);
var blowfish = new Blowfish();
blowfish.Initialize(blowfishKey);
BlowfishUtilities.SetBlowfish(blowfish);
var tempChecksum =
BlowfishUtilities.GetBlowfish().Encode(Encoding.ASCII.GetBytes("Joymax Pak File"));
//Check if the security checksum equals the generated checksum
if (tempChecksum[0] != Header.SecurityChecksum[0] ||
tempChecksum[1] != Header.SecurityChecksum[1] ||
tempChecksum[2] != Header.SecurityChecksum[2])
{
throw new BlowfishSecurityException(Config.Key);
}
}
if (Config.Mode != PK2Mode.FreeBrowse)
{
switch (Config.Mode)
{
case PK2Mode.IndexBlocks:
Blocks = new List <PK2Block>();
ReadBlockAt(256);
break;
case PK2Mode.Index:
_files = new List <PK2File>();
_directories = new List <PK2Directory>();
ReadBlockAt(256, new PK2Directory());
break;
}
}
else
{
_navigator = new PK2Navigator();
}
Loaded = true;
}