/// <summary>
/// Creates a realtime crypto stream reader.
/// </summary>
/// <param name="source">The <see cref="IWireStreamReaderStrategy"/> to decorate.</param>
/// <param name="sessionCrypto"></param>
/// <param name="count">The amount of bytes to be read immediately.</param>
public OneTimeCryptoStreamReader([NotNull] TStreamType source, [NotNull] ISessionPacketCryptoService sessionCrypto, int count)
: base(new DefaultStreamReaderStrategy(new LazyCryptoStreamReader <TStreamType>(source, sessionCrypto).ReadBytes(count)) as TStreamType, sessionCrypto) //Reads count many bytes and decrypts and creates a default reader around it
{
if (count < 0)
{
throw new ArgumentOutOfRangeException(nameof(count));
}
}
/// <summary>
/// Creates a realtime crypto stream reader.
/// </summary>
/// <param name="sessionCryptoService"></param>
protected CryptoStreamService([NotNull] ISessionPacketCryptoService sessionCryptoService)
{
if (sessionCryptoService == null)
{
throw new ArgumentNullException(nameof(sessionCryptoService));
}
SessionCryptoService = sessionCryptoService;
}
/// <summary>
/// Creates a realtime crypto stream reader.
/// </summary>
/// <param name="dest">The <see cref="IWireStreamWriterStrategy"/> to decorate.</param>
/// <param name="sessionCrypto"></param>
protected CryptoStreamWriter([NotNull] IWireStreamWriterStrategy dest, [NotNull] ISessionPacketCryptoService sessionCrypto)
: base(sessionCrypto)
{
//We don't implement the writing ourselves because it could be a default behavior
//our we may need network stream reading, which may block, or anything under the sun
if (dest == null)
{
throw new ArgumentNullException(nameof(dest));
}
Dest = dest;
}
/// <summary>
/// Creates a realtime crypto stream reader.
/// </summary>
/// <param name="source">The <see cref="TStreamType"/> to decorate.</param>
/// <param name="sessionCrypto"></param>
protected CryptoStreamReader([NotNull] TStreamType source, [NotNull] ISessionPacketCryptoService sessionCrypto)
: base(sessionCrypto)
{
//We don't implement the reading ourselves because it could be a default behavior
//our we may need network stream reading, which may block, or anything under the sun
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
Source = source;
}
public OneTimeCryptoStreamWriter([NotNull] IWireStreamWriterStrategy dest, [NotNull] ISessionPacketCryptoService sessionCrypto)
: base(dest, sessionCrypto)
{
//The starting state is default
//The writer can only write when it's in default state.
WriterState = State.Default;
//Lazily encrypt the stream's bytes.
//This means it can ONLY be done once.
CryptoByteRepresentation = new Lazy <byte[]>(() =>
{
WriterState = State.Crypted;
return(sessionCrypto.ProcessBytes(dest.GetBytes(), 0));
}, true);
}
/// <summary>
/// Creates a realtime crypto stream reader.
/// </summary>
/// <param name="dest">The <see cref="IWireStreamWriterStrategy"/> to decorate.</param>
/// <param name="sessionCrypto"></param>
public RealtimeCryptoStreamWriter([NotNull] IWireStreamWriterStrategy dest, [NotNull] ISessionPacketCryptoService sessionCrypto)
: base(dest, sessionCrypto)
{
}
/// <summary>
/// Creates a realtime crypto stream reader.
/// </summary>
/// <param name="source">The <see cref="IWireStreamReaderStrategy"/> to decorate.</param>
/// <param name="sessionCrypto"></param>
public LazyCryptoStreamReader([NotNull] TReaderType source, [NotNull] ISessionPacketCryptoService sessionCrypto)
: base(source, sessionCrypto)
{
}
/// <summary>
/// Decorates the stream with async peek only functionality.
/// This forces the decorated reader to peek for every peek or read.
/// </summary>
/// <param name="reader"></param>
/// <param name="cryptoService"></param>
/// <returns></returns>
public static IWireStreamReaderStrategyAsync WithLazyCryptoAsync <TReaderType>(this TReaderType reader, [NotNull] ISessionPacketCryptoService cryptoService)
where TReaderType : IWireStreamReaderStrategy, IWireStreamReaderStrategyAsync
{
if (cryptoService == null)
{
throw new ArgumentNullException(nameof(cryptoService));
}
return(new LazyCryptoStreamReaderAsync(reader, cryptoService));
}
/// <inheritdoc />
public LazyCryptoStreamReaderAsync([NotNull] IWireStreamReaderStrategyAsync source, [NotNull] ISessionPacketCryptoService sessionCrypto)
: base(source, sessionCrypto)
{
}
