/// <inheritdoc />
public override async Task <IFtpResponse> Process(FtpCommand command, CancellationToken cancellationToken)
{
// Reset the login
var loginStateMachine = Connection.ConnectionServices.GetRequiredService <IFtpLoginStateMachine>();
loginStateMachine.Reset();
// Remember old features
var fileSystemFeature = Connection.Features.Get <IFileSystemFeature>();
var connectionFeature = Connection.Features.Get <IConnectionFeature>();
var secureConnectionFeature = Connection.Features.Get <ISecureConnectionFeature>();
// Reset to empty file system
fileSystemFeature.FileSystem = new EmptyUnixFileSystem();
fileSystemFeature.Path.Clear();
// Remove the control connection encryption
await secureConnectionFeature.CloseEncryptedControlStream(cancellationToken)
.ConfigureAwait(false);
// Dispose and remove all features (if disposable)
var setFeatureMethod = Connection.Features.GetType().GetTypeInfo().GetDeclaredMethod("Set");
foreach (var featureItem in Connection.Features)
{
if (!(featureItem.Value is IDisposable disposableFeature))
{
continue;
}
try
{
disposableFeature.Dispose();
}
catch (Exception ex)
{
// Ignore exceptions
_logger?.LogWarning(
ex,
"Failed to feature of type {featureType}: {errorMessage}",
featureItem.Key,
ex.Message);
}
// Remove from features collection
var setMethod = setFeatureMethod.MakeGenericMethod(featureItem.Key);
setMethod.Invoke(Connection.Features, new object[] { null });
}
// Set the default FTP data connection feature
var activeDataConnectionFeatureFactory = Connection.ConnectionServices.GetRequiredService <ActiveDataConnectionFeatureFactory>();
var dataConnectionFeature = await activeDataConnectionFeatureFactory.CreateFeatureAsync(null, connectionFeature.RemoteAddress, _dataPort)
.ConfigureAwait(false);
Connection.Features.Set(dataConnectionFeature);
return(new FtpResponseTextBlock(220, _serverMessages.GetBannerMessage()));
}
/// <inheritdoc />
public override async Task <IFtpResponse?> Process(FtpCommand command, CancellationToken cancellationToken)
{
// User-Logout
var authorizationInformationFeature = Connection.Features.Get <IAuthorizationInformationFeature>();
var user = authorizationInformationFeature.FtpUser;
var membershipProvider = authorizationInformationFeature.MembershipProvider;
if (user != null && membershipProvider is IMembershipProviderAsync membershipProviderAsync)
{
await membershipProviderAsync.LogOutAsync(user, cancellationToken);
}
// Reset the login
var loginStateMachine = Connection.ConnectionServices.GetRequiredService <IFtpLoginStateMachine>();
loginStateMachine.Reset();
// Reset encoding
var encodingFeature = Connection.Features.Get <IEncodingFeature>();
encodingFeature.Reset();
// Remember old features
var fileSystemFeature = Connection.Features.Get <IFileSystemFeature>();
var connectionFeature = Connection.Features.Get <IConnectionFeature>();
var secureConnectionFeature = Connection.Features.Get <ISecureConnectionFeature>();
// Reset to empty file system
fileSystemFeature.FileSystem = new EmptyUnixFileSystem();
fileSystemFeature.Path.Clear();
// Remove the control connection encryption
await secureConnectionFeature.CloseEncryptedControlStream(cancellationToken)
.ConfigureAwait(false);
// Dispose and remove all features (if disposable)
foreach (var featureItem in Connection.Features)
{
try
{
switch (featureItem.Value)
{
case IFtpConnection _:
// Never dispose the connection itself.
break;
case IFtpDataConnectionFeature f:
await f.DisposeAsync().ConfigureAwait(false);
break;
case IDisposable disposable:
disposable.Dispose();
break;
}
}
catch (Exception ex)
{
// Ignore exceptions
_logger?.LogWarning(
ex,
"Failed to dispose feature of type {FeatureType}: {ErrorMessage}",
featureItem.Key,
ex.Message);
}
// Remove from features collection
Connection.Features[featureItem.Key] = null;
}
// Reset the FTP data connection configuration feature
Connection.Features.Set <IFtpDataConnectionConfigurationFeature>(new FtpDataConnectionConfigurationFeature());
// Set the default FTP data connection feature
var activeDataConnectionFeatureFactory = Connection.ConnectionServices.GetRequiredService <ActiveDataConnectionFeatureFactory>();
var dataConnectionFeature = await activeDataConnectionFeatureFactory.CreateFeatureAsync(null, connectionFeature.RemoteEndPoint, _dataPort)
.ConfigureAwait(false);
Connection.Features.Set(dataConnectionFeature);
return(new FtpResponseTextBlock(220, _serverMessages.GetBannerMessage()));
}
