private async Task InnerOnConnectionAsync(ConnectionContext context)
{
var feature = new TlsConnectionFeature();
context.Features.Set<ITlsConnectionFeature>(feature);
context.Features.Set<ITlsHandshakeFeature>(feature);
var memoryPool = context.Features.Get<IMemoryPoolFeature>()?.MemoryPool;
var inputPipeOptions = new StreamPipeReaderOptions
(
pool: memoryPool,
bufferSize: memoryPool.GetMinimumSegmentSize(),
minimumReadSize: memoryPool.GetMinimumAllocSize(),
leaveOpen: true
);
var outputPipeOptions = new StreamPipeWriterOptions
(
pool: memoryPool,
leaveOpen: true
);
TlsDuplexPipe tlsDuplexPipe = null;
if (_options.RemoteCertificateMode == RemoteCertificateMode.NoCertificate)
{
tlsDuplexPipe = new TlsDuplexPipe(context.Transport, inputPipeOptions, outputPipeOptions);
}
else
{
tlsDuplexPipe = new TlsDuplexPipe(context.Transport, inputPipeOptions, outputPipeOptions, s => new SslStream(
s,
leaveInnerStreamOpen: false,
userCertificateValidationCallback: (sender, certificate, chain, sslPolicyErrors) =>
{
if (certificate == null)
{
return _options.RemoteCertificateMode != RemoteCertificateMode.RequireCertificate;
}
if (_options.RemoteCertificateValidation == null)
{
if (sslPolicyErrors != SslPolicyErrors.None)
{
return false;
}
}
var certificate2 = ConvertToX509Certificate2(certificate);
if (certificate2 == null)
{
return false;
}
if (_options.RemoteCertificateValidation != null)
{
if (!_options.RemoteCertificateValidation(certificate2, chain, sslPolicyErrors))
{
return false;
}
}
return true;
}));
}
var sslStream = tlsDuplexPipe.Stream;
using (var cancellationTokeSource = new CancellationTokenSource(_options.HandshakeTimeout))
using (cancellationTokeSource.Token.UnsafeRegisterCancellation(state => ((ConnectionContext)state).Abort(), context))
{
try
{
var sslOptions = new TlsClientAuthenticationOptions
{
ClientCertificates = new X509CertificateCollection(new[] { _certificate }),
EnabledSslProtocols = _options.SslProtocols,
};
_options.OnAuthenticateAsClient?.Invoke(context, sslOptions);
#if NETCOREAPP
await sslStream.AuthenticateAsClientAsync(sslOptions.Value, cancellationTokeSource.Token);
#else
await sslStream.AuthenticateAsClientAsync(
sslOptions.TargetHost,
sslOptions.ClientCertificates,
sslOptions.EnabledSslProtocols,
sslOptions.CertificateRevocationCheckMode == X509RevocationMode.Online);
#endif
}
catch (OperationCanceledException)
{
_logger?.LogDebug(2, "Authentication timed out");
#if NETCOREAPP
await sslStream.DisposeAsync();
#else
sslStream.Dispose();
#endif
return;
}
catch (Exception ex) when (ex is IOException || ex is AuthenticationException)
{
_logger?.LogDebug(1, ex, "Authentication failed");
#if NETCOREAPP
await sslStream.DisposeAsync();
#else
sslStream.Dispose();
#endif
return;
}
}
#if NETCOREAPP
feature.ApplicationProtocol = sslStream.NegotiatedApplicationProtocol.Protocol;
#endif
context.Features.Set<ITlsApplicationProtocolFeature>(feature);
feature.LocalCertificate = ConvertToX509Certificate2(sslStream.LocalCertificate);
feature.RemoteCertificate = ConvertToX509Certificate2(sslStream.RemoteCertificate);
feature.CipherAlgorithm = sslStream.CipherAlgorithm;
feature.CipherStrength = sslStream.CipherStrength;
feature.HashAlgorithm = sslStream.HashAlgorithm;
feature.HashStrength = sslStream.HashStrength;
feature.KeyExchangeAlgorithm = sslStream.KeyExchangeAlgorithm;
feature.KeyExchangeStrength = sslStream.KeyExchangeStrength;
feature.Protocol = sslStream.SslProtocol;
var originalTransport = context.Transport;
try
{
context.Transport = tlsDuplexPipe;
// Disposing the stream will dispose the tlsDuplexPipe
#if NETCOREAPP
await using (sslStream)
await using (tlsDuplexPipe)
#else
using (sslStream)
using (tlsDuplexPipe)
#endif
{
await _next(context);
// Dispose the inner stream (tlsDuplexPipe) before disposing the SslStream
// as the duplex pipe can hit an ODE as it still may be writing.
}
}
finally
{
// Restore the original so that it gets closed appropriately
context.Transport = originalTransport;
}
}
private async Task InnerOnConnectionAsync(ConnectionContext context)
{
bool certificateRequired;
var feature = new TlsConnectionFeature();
context.Features.Set <ITlsConnectionFeature>(feature);
context.Features.Set <ITlsHandshakeFeature>(feature);
var memoryPool = context.Features.Get <IMemoryPoolFeature>()?.MemoryPool;
var inputPipeOptions = new StreamPipeReaderOptions
(
pool: memoryPool,
bufferSize: memoryPool.GetMinimumSegmentSize(),
minimumReadSize: memoryPool.GetMinimumAllocSize(),
leaveOpen: true
);
var outputPipeOptions = new StreamPipeWriterOptions
(
pool: memoryPool,
leaveOpen: true
);
SslDuplexPipe sslDuplexPipe = null;
if (_options.RemoteCertificateMode == RemoteCertificateMode.NoCertificate)
{
sslDuplexPipe = new SslDuplexPipe(context.Transport, inputPipeOptions, outputPipeOptions);
certificateRequired = false;
}
else
{
sslDuplexPipe = new SslDuplexPipe(context.Transport, inputPipeOptions, outputPipeOptions, s => new SslStream(
s,
leaveInnerStreamOpen: false,
userCertificateValidationCallback: (sender, certificate, chain, sslPolicyErrors) =>
{
if (certificate == null)
{
return(_options.RemoteCertificateMode != RemoteCertificateMode.RequireCertificate);
}
if (_options.RemoteCertificateValidation == null)
{
if (sslPolicyErrors != SslPolicyErrors.None)
{
return(false);
}
}
var certificate2 = ConvertToX509Certificate2(certificate);
if (certificate2 == null)
{
return(false);
}
if (_options.RemoteCertificateValidation != null)
{
if (!_options.RemoteCertificateValidation(certificate2, chain, sslPolicyErrors))
{
return(false);
}
}
return(true);
}));
certificateRequired = true;
}
var sslStream = sslDuplexPipe.Stream;
using (var cancellationTokeSource = new CancellationTokenSource(_options.HandshakeTimeout))
using (cancellationTokeSource.Token.UnsafeRegister(state => ((ConnectionContext)state).Abort(), context))
{
try
{
// Adapt to the SslStream signature
ServerCertificateSelectionCallback selector = null;
if (_certificateSelector != null)
{
selector = (sender, name) =>
{
context.Features.Set(sslStream);
var cert = _certificateSelector(context, name);
if (cert != null)
{
EnsureCertificateIsAllowedForServerAuth(cert);
}
return(cert);
};
}
var sslOptions = new SslServerAuthenticationOptions
{
ServerCertificate = _certificate,
ServerCertificateSelectionCallback = selector,
ClientCertificateRequired = certificateRequired,
EnabledSslProtocols = _options.SslProtocols,
CertificateRevocationCheckMode = _options.CheckCertificateRevocation ? X509RevocationMode.Online : X509RevocationMode.NoCheck,
ApplicationProtocols = new List <SslApplicationProtocol>()
};
_options.OnAuthenticateAsServer?.Invoke(context, sslOptions);
await sslStream.AuthenticateAsServerAsync(sslOptions, CancellationToken.None);
}
catch (OperationCanceledException)
{
_logger?.LogDebug(2, "Authentication timed out");
await sslStream.DisposeAsync();
return;
}
catch (Exception ex) when(ex is IOException || ex is AuthenticationException)
{
_logger?.LogDebug(1, ex, "Authentication failed");
await sslStream.DisposeAsync();
return;
}
}
feature.ApplicationProtocol = sslStream.NegotiatedApplicationProtocol.Protocol;
context.Features.Set <ITlsApplicationProtocolFeature>(feature);
feature.LocalCertificate = ConvertToX509Certificate2(sslStream.LocalCertificate);
feature.RemoteCertificate = ConvertToX509Certificate2(sslStream.RemoteCertificate);
feature.CipherAlgorithm = sslStream.CipherAlgorithm;
feature.CipherStrength = sslStream.CipherStrength;
feature.HashAlgorithm = sslStream.HashAlgorithm;
feature.HashStrength = sslStream.HashStrength;
feature.KeyExchangeAlgorithm = sslStream.KeyExchangeAlgorithm;
feature.KeyExchangeStrength = sslStream.KeyExchangeStrength;
feature.Protocol = sslStream.SslProtocol;
var originalTransport = context.Transport;
try
{
context.Transport = sslDuplexPipe;
// Disposing the stream will dispose the sslDuplexPipe
await using (sslStream)
await using (sslDuplexPipe)
{
await _next(context);
// Dispose the inner stream (SslDuplexPipe) before disposing the SslStream
// as the duplex pipe can hit an ODE as it still may be writing.
}
}
finally
{
// Restore the original so that it gets closed appropriately
context.Transport = originalTransport;
}
}
