| private GetRemainingFrameSize ( byte buffer, int dataSize ) : int | ||
| buffer | byte | |
| dataSize | int | |
| return | int | |
private int StartFrameBody(int readBytes, byte[] buffer, int offset, int count, AsyncProtocolRequest asyncRequest)
{
if (readBytes == 0)
{
// EOF
asyncRequest?.CompleteUser(0);
return(0);
}
Debug.Assert(readBytes == SecureChannel.ReadHeaderSize);
int payloadBytes = _sslState.GetRemainingFrameSize(_internalBuffer, _internalOffset, readBytes);
if (payloadBytes < 0)
{
throw new IOException(SR.net_frame_read_size);
}
readBytes = EnsureBufferedBytes(SecureChannel.ReadHeaderSize + payloadBytes, asyncRequest, s_readFrameCallback);
if (readBytes == -1)
{
Debug.Assert(asyncRequest != null);
return(0);
}
Debug.Assert(readBytes == 0 || readBytes == SecureChannel.ReadHeaderSize + payloadBytes);
return(ProcessFrameBody(readBytes, buffer, offset, count, asyncRequest));
}
private int StartFrameBody(int readBytes, byte[] buffer, int offset, int count, AsyncProtocolRequest asyncRequest)
{
if (readBytes == 0)
{
//EOF : Reset the buffer as we did not read anything into it.
SkipBytes(InternalBufferCount);
if (asyncRequest != null)
{
asyncRequest.CompleteUser((object)0);
}
return(0);
}
// Now readBytes is a payload size.
readBytes = _SslState.GetRemainingFrameSize(InternalBuffer, readBytes);
if (readBytes < 0)
{
throw new IOException(SR.net_frame_read_size);
}
EnsureInternalBufferSize(SecureChannel.ReadHeaderSize, readBytes);
if (asyncRequest != null) //Async
{
asyncRequest.SetNextRequest(InternalBuffer, SecureChannel.ReadHeaderSize, readBytes, s_readFrameCallback);
_Reader.AsyncReadPacket(asyncRequest);
if (!asyncRequest.MustCompleteSynchronously)
{
return(0);
}
readBytes = asyncRequest.Result;
}
else //Sync
{
readBytes = _Reader.ReadPacket(InternalBuffer, SecureChannel.ReadHeaderSize, readBytes);
}
return(ProcessFrameBody(readBytes, buffer, offset, count, asyncRequest));
}
private int StartFrameBody(int readBytes, byte[] buffer, int offset, int count)
{
if (readBytes == 0)
{
//EOF : Reset the buffer as we did not read anything into it.
SkipBytes(InternalBufferCount);
return(0);
}
// Now readBytes is a payload size.
readBytes = _SslState.GetRemainingFrameSize(InternalBuffer, readBytes);
if (readBytes < 0)
{
throw new IOException(SR.net_frame_read_size);
}
EnsureInternalBufferSize(SecureChannel.ReadHeaderSize, readBytes);
readBytes = _Reader.ReadPacket(InternalBuffer, SecureChannel.ReadHeaderSize, readBytes);
return(ProcessFrameBody(readBytes, buffer, offset, count));
}
private async ValueTask <int> ReadAsyncInternal <TReadAdapter>(TReadAdapter adapter, Memory <byte> buffer)
where TReadAdapter : ISslReadAdapter
{
if (Interlocked.Exchange(ref _nestedRead, 1) == 1)
{
throw new NotSupportedException(SR.Format(SR.net_io_invalidnestedcall, nameof(ReadAsync), "read"));
}
while (true)
{
int copyBytes;
if (_decryptedBytesCount != 0)
{
copyBytes = CopyDecryptedData(buffer);
_sslState.FinishRead(null);
_nestedRead = 0;
return(copyBytes);
}
copyBytes = await adapter.LockAsync(buffer).ConfigureAwait(false);
try
{
if (copyBytes > 0)
{
return(copyBytes);
}
ResetReadBuffer();
int readBytes = await FillBufferAsync(adapter, SecureChannel.ReadHeaderSize).ConfigureAwait(false);
if (readBytes == 0)
{
return(0);
}
int payloadBytes = _sslState.GetRemainingFrameSize(_internalBuffer, _internalOffset, readBytes);
if (payloadBytes < 0)
{
throw new IOException(SR.net_frame_read_size);
}
readBytes = await FillBufferAsync(adapter, SecureChannel.ReadHeaderSize + payloadBytes).ConfigureAwait(false);
if (readBytes < 0)
{
throw new IOException(SR.net_frame_read_size);
}
// At this point, readBytes contains the size of the header plus body.
// Set _decrytpedBytesOffset/Count to the current frame we have (including header)
// DecryptData will decrypt in-place and modify these to point to the actual decrypted data, which may be smaller.
_decryptedBytesOffset = _internalOffset;
_decryptedBytesCount = readBytes;
SecurityStatusPal status = _sslState.DecryptData(_internalBuffer, ref _decryptedBytesOffset, ref _decryptedBytesCount);
// Treat the bytes we just decrypted as consumed
// Note, we won't do another buffer read until the decrypted bytes are processed
ConsumeBufferedBytes(readBytes);
if (status.ErrorCode != SecurityStatusPalErrorCode.OK)
{
byte[] extraBuffer = null;
if (_decryptedBytesCount != 0)
{
extraBuffer = new byte[_decryptedBytesCount];
Buffer.BlockCopy(_internalBuffer, _decryptedBytesOffset, extraBuffer, 0, _decryptedBytesCount);
_decryptedBytesCount = 0;
}
ProtocolToken message = new ProtocolToken(null, status);
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(null, $"***Processing an error Status = {message.Status}");
}
if (message.Renegotiate)
{
if (!_sslState._sslAuthenticationOptions.AllowRenegotiation)
{
throw new IOException(SR.net_ssl_io_renego);
}
_sslState.ReplyOnReAuthentication(extraBuffer);
// Loop on read.
return(-1);
}
if (message.CloseConnection)
{
_sslState.FinishRead(null);
return(0);
}
throw new IOException(SR.net_io_decrypt, message.GetException());
}
}
catch (Exception e)
{
_sslState.FinishRead(null);
if (e is IOException)
{
throw;
}
throw new IOException(SR.net_io_read, e);
}
finally
{
_nestedRead = 0;
}
}
}
