public void GetVerb_SupportedCommands_ReturnProperVerb()
{
// Arrange
var testCommands = new KeyValuePair <string, SmtpVerb>[]
{
new KeyValuePair <string, SmtpVerb>("HELO", SmtpVerb.Hello),
new KeyValuePair <string, SmtpVerb>("EHLO", SmtpVerb.ExtendedHello),
new KeyValuePair <string, SmtpVerb>("MAIL", SmtpVerb.Mail),
new KeyValuePair <string, SmtpVerb>("RCPT", SmtpVerb.Recipient),
new KeyValuePair <string, SmtpVerb>("DATA", SmtpVerb.Data),
new KeyValuePair <string, SmtpVerb>("RSET", SmtpVerb.Reset),
new KeyValuePair <string, SmtpVerb>("VRFY", SmtpVerb.Verify),
new KeyValuePair <string, SmtpVerb>("EXPN", SmtpVerb.Expand),
new KeyValuePair <string, SmtpVerb>("HELP", SmtpVerb.Help),
new KeyValuePair <string, SmtpVerb>("NOOP", SmtpVerb.NoOp),
new KeyValuePair <string, SmtpVerb>("QUIT", SmtpVerb.Quit),
};
foreach (var commandPair in testCommands)
{
// Act
var resultingVerb = SmtpCommand.GetVerb(commandPair.Key);
// Assert
Assert.AreEqual(commandPair.Value, resultingVerb,
string.Format("Command string {0} did not return verb {1}",
commandPair.Key, commandPair.Value));
}
}
public void Parsing_ArgsSeparatedByColon()
{
SmtpCommand command = new SmtpCommand("DATA:ARGS");
Assert.True(command.IsValid);
Assert.Equal("DATA", command.Verb);
Assert.Equal("ARGS", command.ArgumentsText);
}
public async Task ProcessAsync(IConnection connection, SmtpCommand command)
{
X509Certificate certificate = connection.Server.Behaviour.GetSSLCertificate(connection);
if (certificate == null)
{
await connection.WriteResponseAsync(new SmtpResponse(StandardSmtpResponseCode.CommandNotImplemented, "TLS configuration error - no certificate"));
return;
}
await connection.WriteResponseAsync(new SmtpResponse(StandardSmtpResponseCode.ServiceReady,
"Ready to start TLS"));
#pragma warning disable 0618
var sslProtos = SslProtocols.Ssl2 | SslProtocols.Ssl3 | SslProtocols.Tls;
#pragma warning restore 0618
await connection.ApplyStreamFilterAsync(async stream =>
{
SslStream sslStream = new SslStream(stream);
await sslStream.AuthenticateAsServerAsync(certificate
, false,
sslProtos,
false);
return sslStream;
});
connection.Session.SecureConnection = true;
}
public void Parsing_SingleToken()
{
SmtpCommand command = new SmtpCommand("DATA");
Assert.True(command.IsValid);
Assert.Equal("DATA", command.Verb);
Assert.Equal("", command.ArgumentsText);
}
public void Parsing_ArgsSeparatedByColon()
{
var command = new SmtpCommand("DATA:ARGS");
Assert.True(command.IsValid);
Assert.Equal("DATA", command.Verb);
Assert.Equal("ARGS", command.ArgumentsText);
}
public void Parsing_ArgsSeparatedBySpace()
{
SmtpCommand command = new SmtpCommand("DATA ARGS");
Assert.IsTrue(command.IsValid);
Assert.AreEqual("DATA", command.Verb);
Assert.AreEqual("ARGS", command.ArgumentsText);
}
public void Parsing_SingleToken()
{
var command = new SmtpCommand("DATA");
Assert.True(command.IsValid);
Assert.Equal("DATA", command.Verb);
Assert.Equal("", command.ArgumentsText);
}
public void Parsing_SingleToken()
{
SmtpCommand command = new SmtpCommand("DATA");
Assert.IsTrue(command.IsValid);
Assert.AreEqual("DATA", command.Verb);
Assert.AreEqual("", command.ArgumentsText);
Assert.AreEqual(0, command.Arguments.Length);
}
public async Task ProcessAsync(IConnection connection, SmtpCommand command)
{
await connection.WriteResponseAsync(new SmtpResponse(StandardSmtpResponseCode.ClosingTransmissionChannel,
"Goodbye"));
await connection.CloseConnectionAsync();
connection.Session.CompletedNormally = true;
}
private void CheckDataForCommand(string dataRead)
{
var parseResult = SmtpCommand.Parse(dataRead);
if (parseResult.Success)
{
LastCommand = parseResult.Result;
}
}
/// <summary>
/// Execute the command.
/// </summary>
/// <param name="command">The command to execute.</param>
/// <param name="context">The execution context to operate on.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>A task which asynchronously performs the execution.</returns>
static async Task <bool> ExecuteAsync(SmtpCommand command, SmtpSessionContext context, CancellationToken cancellationToken)
{
context.RaiseCommandExecuting(command);
var result = await command.ExecuteAsync(context, cancellationToken);
context.RaiseCommandExecuted(command);
return(result);
}
public void Parsing_MailFrom_WithDisplayName()
{
SmtpCommand command = new SmtpCommand("MAIL FROM:<Robert Wood<*****@*****.**>> ARG1 ARG2");
Assert.IsTrue(command.IsValid);
Assert.AreEqual("MAIL", command.Verb);
Assert.AreEqual("FROM:<Robert Wood<*****@*****.**>> ARG1 ARG2", command.ArgumentsText);
Assert.AreEqual("FROM", command.Arguments[0]);
Assert.AreEqual("<Robert Wood<*****@*****.**>>", command.Arguments[1]);
Assert.AreEqual("ARG1", command.Arguments[2]);
Assert.AreEqual("ARG2", command.Arguments[3]);
}
public void Parsing_MailFrom_EmailOnly()
{
SmtpCommand command = new SmtpCommand("MAIL FROM:<*****@*****.**> ARG1 ARG2");
Assert.IsTrue(command.IsValid);
Assert.AreEqual("MAIL", command.Verb);
Assert.AreEqual("FROM:<*****@*****.**> ARG1 ARG2", command.ArgumentsText);
Assert.AreEqual("FROM", command.Arguments[0]);
Assert.AreEqual("<*****@*****.**>", command.Arguments[1]);
Assert.AreEqual("ARG1", command.Arguments[2]);
Assert.AreEqual("ARG2", command.Arguments[3]);
}
public void Parsing_MailFrom_WithDisplayName()
{
SmtpCommand command = new SmtpCommand("MAIL FROM:<Robert Wood<*****@*****.**>> ARG1 ARG2");
Assert.IsTrue(command.IsValid);
Assert.AreEqual("MAIL", command.Verb);
Assert.AreEqual("FROM:<Robert Wood<*****@*****.**>> ARG1 ARG2", command.ArgumentsText);
Assert.AreEqual("FROM", command.Arguments[0]);
Assert.AreEqual("<Robert Wood<*****@*****.**>>", command.Arguments[1]);
Assert.AreEqual("ARG1", command.Arguments[2]);
Assert.AreEqual("ARG2", command.Arguments[3]);
}
public void Parsing_MailFrom_EmailOnly()
{
SmtpCommand command = new SmtpCommand("MAIL FROM:<*****@*****.**> ARG1 ARG2");
Assert.IsTrue(command.IsValid);
Assert.AreEqual("MAIL", command.Verb);
Assert.AreEqual("FROM:<*****@*****.**> ARG1 ARG2", command.ArgumentsText);
Assert.AreEqual("FROM", command.Arguments[0]);
Assert.AreEqual("<*****@*****.**>", command.Arguments[1]);
Assert.AreEqual("ARG1", command.Arguments[2]);
Assert.AreEqual("ARG2", command.Arguments[3]);
}
void QueueCommand(SmtpCommand type, string command)
{
if (queue == null)
{
queue = new MemoryBlockStream();
}
var bytes = Encoding.UTF8.GetBytes(command + "\r\n");
queue.Write(bytes, 0, bytes.Length);
queued.Add(type);
}
public void Parse_EHLOWithoutDomain_ReturnsTrueWithNoArguments()
{
// Arrange
var testCommand = "EHLO SP";
// Act
var result = SmtpCommand.Parse(testCommand);
// Assert
Assert.IsTrue(result.Success);
Assert.IsFalse(result.Result.Arguments.Any());
}
public async Task ProcessAsync(IConnection connection, SmtpCommand command)
{
if (!string.IsNullOrEmpty(connection.Session.ClientName))
{
await connection.WriteResponseAsync(new SmtpResponse(StandardSmtpResponseCode.BadSequenceOfCommands,
"You already said HELO"));
return;
}
connection.Session.ClientName = command.ArgumentsText ?? "";
await connection.WriteResponseAsync(new SmtpResponse(StandardSmtpResponseCode.Ok, "Nice to meet you"));
}
private void CheckExpectedToken(byte[] token)
{
this.TrimStart();
if (token.Length >= this.RemainingBufferLength)
{
throw new FormatException("Expected token is missing");
}
if (!SmtpCommand.CompareArg(token, this.commandBytes, this.currentOffset, token.Length))
{
throw new FormatException("Expected token is missing");
}
this.currentOffset += token.Length;
}
public async Task ProcessAsync(IConnection connection, SmtpCommand command)
{
if (connection.CurrentMessage != null)
{
await connection.WriteResponseAsync(new SmtpResponse(StandardSmtpResponseCode.BadSequenceOfCommands,
"You already told me who the message was from"));
return;
}
if (command.ArgumentsText.Length == 0)
{
await connection.WriteResponseAsync(
new SmtpResponse(StandardSmtpResponseCode.SyntaxErrorInCommandArguments,
"Must specify from address or <>"));
return;
}
var argumentsParser = new ArgumentsParser(command.ArgumentsText);
var arguments = argumentsParser.Arguments;
var from = arguments.First();
if (from.StartsWith("<"))
{
from = from.Remove(0, 1);
}
if (from.EndsWith(">"))
{
from = from.Remove(from.Length - 1, 1);
}
connection.Server.Behaviour.OnMessageStart(connection, from);
connection.NewMessage();
connection.CurrentMessage.ReceivedDate = _currentDateTimeProvider.GetCurrentDateTime();
connection.CurrentMessage.From = from;
try
{
await ParameterProcessorMap.ProcessAsync(connection, arguments.Skip(1).ToArray(), true);
await connection.WriteResponseAsync(new SmtpResponse(StandardSmtpResponseCode.Ok, "New message started"));
}
catch
{
connection.AbortMessage();
throw;
}
}
/// <summary>
/// Try to accept the command given the current state.
/// </summary>
/// <param name="command">The command to accept.</param>
/// <param name="errorResponse">The error response to display if the command was not accepted.</param>
/// <returns>true if the command could be accepted, false if not.</returns>
public bool TryAccept(SmtpCommand command, out SmtpResponse errorResponse)
{
errorResponse = null;
if (_state.Transitions.TryGetValue(command.Name, out var transition) == false || transition.CanAccept(_context) == false)
{
var commands = _state.Transitions.Where(t => t.Value.CanAccept(_context)).Select(t => t.Key);
errorResponse = new SmtpResponse(SmtpReplyCode.SyntaxError, $"expected {string.Join("/", commands)}");
return(false);
}
_transition = transition;
return(true);
}
public override async Task ProcessAsync(IConnection connection, SmtpCommand command)
{
if (connection.CurrentMessage != null && connection.CurrentMessage.EightBitTransport)
{
connection.SetReaderEncoding(Encoding.UTF8);
}
try
{
await base.ProcessAsync(connection, command);
}
finally
{
connection.SetReaderEncodingToDefault();
}
}
public async virtual Task ProcessAsync(IConnection connection, SmtpCommand command)
{
SmtpCommand subrequest = new SmtpCommand(command.ArgumentsText);
IVerb verbProcessor = SubVerbMap.GetVerbProcessor(subrequest.Verb);
if (verbProcessor != null)
{
await verbProcessor.ProcessAsync(connection, subrequest);
}
else
{
await connection.WriteResponseAsync(
new SmtpResponse(StandardSmtpResponseCode.CommandParameterNotImplemented,
"Subcommand {0} not implemented", subrequest.Verb));
}
}
public async override Task ProcessAsync(IConnection connection, SmtpCommand command)
{
if (connection.CurrentMessage != null && connection.CurrentMessage.EightBitTransport)
{
connection.SetReaderEncoding(Encoding.UTF8);
}
try
{
await base.ProcessAsync(connection, command);
}
finally
{
connection.SetReaderEncodingToDefault();
}
}
public virtual async Task ProcessAsync(IConnection connection, SmtpCommand command)
{
var subrequest = new SmtpCommand(command.ArgumentsText);
var verbProcessor = SubVerbMap.GetVerbProcessor(subrequest.Verb);
if (verbProcessor != null)
{
await verbProcessor.ProcessAsync(connection, subrequest);
}
else
{
await connection.WriteResponseAsync(
new SmtpResponse(StandardSmtpResponseCode.CommandParameterNotImplemented,
"Subcommand {0} not implemented", subrequest.Verb));
}
}
public virtual void Process(IConnection connection, SmtpCommand command)
{
SmtpCommand subrequest = new SmtpCommand(command.ArgumentsText);
IVerb verbProcessor = SubVerbMap.GetVerbProcessor(subrequest.Verb);
if (verbProcessor != null)
{
verbProcessor.Process(connection, subrequest);
}
else
{
connection.WriteResponse(
new SmtpResponse(StandardSmtpResponseCode.CommandParameterNotImplemented,
"Subcommand {0} not implemented", subrequest.Verb));
}
}
public override void Process(IConnection connection, SmtpCommand command)
{
if (connection.CurrentMessage != null && connection.CurrentMessage.EightBitTransport)
{
connection.SetReaderEncoding(Encoding.Default);
}
try
{
base.Process(connection, command);
}
finally
{
connection.SetReaderEncodingToDefault();
}
}
public override void Process(IConnection connection, SmtpCommand command)
{
if (connection.CurrentMessage != null && connection.CurrentMessage.EightBitTransport)
{
connection.SetReaderEncoding(Encoding.Default);
}
try
{
base.Process(connection, command);
}
finally
{
connection.SetReaderEncodingToDefault();
}
}
public void Process(IConnection connection, SmtpCommand command)
{
connection.WriteResponse(new SmtpResponse(StandardSmtpResponseCode.ServiceReady,
"Ready to start TLS"));
connection.ApplyStreamFilter(stream =>
{
SslStream sslStream = new SslStream(stream);
sslStream.AuthenticateAsServer(
connection.Server.Behaviour.GetSSLCertificate(
connection), false,
SslProtocols.None,
false);
return(sslStream);
});
connection.Session.SecureConnection = true;
}
public void ParseArguments_FromArgument_ReturnsArgumentPair()
{
// Arrange
var testCommandParts = new string[]
{
"TEST", "FROM:[email protected]"
};
// Act
var result = SmtpCommand.ParseArguments(testCommandParts);
// Assert
var spArgument = result.FirstOrDefault(m => m.Argument.Equals(SmtpArgumentName.From));
Assert.IsNotNull(spArgument, "Did not return a From argument");
Assert.AreEqual("*****@*****.**", spArgument.Value);
}
public void Parse_EHLOWithDomain_ReturnsResult()
{
// Arrange
var testCommand = "EHLO SP test.com";
// Act
var result = SmtpCommand.Parse(testCommand);
// Assert
Assert.IsTrue(result.Success);
Assert.AreEqual(SmtpVerb.ExtendedHello, result.Result.Verb);
var spArgument = result.Result.Arguments.FirstOrDefault(m => m.Argument.Equals(SmtpArgumentName.Sp));
Assert.IsNotNull(spArgument);
Assert.AreEqual("test.com", spArgument.Value);
}
public void Process(IConnection connection, SmtpCommand command)
{
connection.WriteResponse(new SmtpResponse(StandardSmtpResponseCode.ServiceReady,
"Ready to start TLS"));
connection.ApplyStreamFilter(stream =>
{
SslStream sslStream = new SslStream(stream);
sslStream.AuthenticateAsServer(
connection.Server.Behaviour.GetSSLCertificate(
connection), false,
SslProtocols.Ssl2 | SslProtocols.Ssl3 | SslProtocols.Tls,
false);
return sslStream;
});
connection.Session.SecureConnection = true;
}
/// <summary>
/// Dispatches a command to the registered sub command matching the next verb in the command
/// or writes an error to the client is no match was found.
/// </summary>
/// <param name="connection">The connection<see cref="Rnwood.SmtpServer.IConnection" />.</param>
/// <param name="command">The command<see cref="Rnwood.SmtpServer.SmtpCommand" />.</param>
/// <returns>
/// A <see cref="System.Threading.Tasks.Task" /> representing the async operation.
/// </returns>
public virtual async Task Process(IConnection connection, SmtpCommand command)
{
SmtpCommand subrequest = new SmtpCommand(command.ArgumentsText);
IVerb verbProcessor = this.SubVerbMap.GetVerbProcessor(subrequest.Verb);
if (verbProcessor != null)
{
await verbProcessor.Process(connection, subrequest).ConfigureAwait(false);
}
else
{
await connection.WriteResponse(
new SmtpResponse(
StandardSmtpResponseCode.CommandParameterNotImplemented,
"Subcommand {0} not implemented",
subrequest.Verb)).ConfigureAwait(false);
}
}
public override void Process(IConnection connection, SmtpCommand command)
{
if (_eightBitMessage)
{
connection.SetReaderEncoding(Encoding.Default);
}
try
{
base.Process(connection, command);
}
finally
{
if (_eightBitMessage)
{
connection.SetReaderEncodingToDefault();
}
}
}
public override void Process(IConnection connection, SmtpCommand command)
{
if (_eightBitMessage)
{
connection.SetReaderEncoding(Encoding.Default);
}
try
{
base.Process(connection, command);
}
finally
{
if (_eightBitMessage)
{
connection.SetReaderEncodingToDefault();
}
}
}
async ValueTask <SmtpCommand> ReadCommandAsync(ISessionContext context, CancellationToken cancellationToken)
{
var timeout = new CancellationTokenSource(context.ServerOptions.CommandWaitTimeout);
var cancellationTokenSource = CancellationTokenSource.CreateLinkedTokenSource(timeout.Token, cancellationToken);
try
{
SmtpCommand command = null;
await context.Pipe.Input.ReadLineAsync(
buffer =>
{
var parser = new SmtpParser(_commandFactory);
if (parser.TryMake(ref buffer, out command, out var errorResponse) == false)
{
throw new SmtpResponseException(errorResponse);
}
return(Task.CompletedTask);
},
cancellationTokenSource.Token).ConfigureAwait(false);
return(command);
}
catch (OperationCanceledException)
{
if (timeout.IsCancellationRequested)
{
throw new SmtpResponseException(new SmtpResponse(SmtpReplyCode.ServiceClosingTransmissionChannel, "Timeout whilst waiting for input."), true);
}
throw new SmtpResponseException(new SmtpResponse(SmtpReplyCode.ServiceClosingTransmissionChannel, "The session has be cancelled."), true);
}
finally
{
timeout.Dispose();
cancellationTokenSource.Dispose();
}
}
/// <inheritdoc/>
public async Task Process(IConnection connection, SmtpCommand command)
{
X509Certificate certificate = await connection.Server.Behaviour.GetSSLCertificate(connection).ConfigureAwait(false);
if (certificate == null)
{
await connection.WriteResponse(new SmtpResponse(StandardSmtpResponseCode.CommandNotImplemented, "TLS configuration error - no certificate")).ConfigureAwait(false);
return;
}
await connection.WriteResponse(new SmtpResponse(
StandardSmtpResponseCode.ServiceReady,
"Ready to start TLS")).ConfigureAwait(false);
SslProtocols sslProtos;
string ver = Assembly.GetEntryAssembly()?.GetCustomAttribute <TargetFrameworkAttribute>()?.FrameworkName;
if (ver == null || !ver.StartsWith(".NETCoreApp,"))
{
sslProtos = SslProtocols.Tls12 | SslProtocols.Tls | SslProtocols.Tls11 | SslProtocols.Ssl3 | SslProtocols.Ssl2;
}
else
{
sslProtos = SslProtocols.None;
}
await connection.ApplyStreamFilter(async stream =>
{
SslStream sslStream = new SslStream(stream);
await sslStream.AuthenticateAsServerAsync(
certificate,
false,
sslProtos,
false).ConfigureAwait(false);
return(sslStream);
}).ConfigureAwait(false);
connection.Session.SecureConnection = true;
}
public bool IsCommandValid(SmtpCommand command)
{
switch (command)
{
case SmtpCommand.Help:
case SmtpCommand.Helo:
case SmtpCommand.Ehlo:
case SmtpCommand.Rset:
return true;
case SmtpCommand.StartTls:
return HasHelo && !HasMailFrom;
case SmtpCommand.Mail:
return HasHelo && !HasMailFrom;
case SmtpCommand.Rcpt:
return HasMailFrom;
case SmtpCommand.Data:
return HasRcptTo;
case SmtpCommand.Quit:
return true;
}
return false;
}
public async Task ProcessAsync(IConnection connection, SmtpCommand command)
{
if (!string.IsNullOrEmpty(connection.Session.ClientName))
{
await connection.WriteResponseAsync(new SmtpResponse(StandardSmtpResponseCode.BadSequenceOfCommands,
"You already said HELO"));
return;
}
connection.Session.ClientName = command.ArgumentsText ?? "";
var text = new StringBuilder();
text.AppendLine("Nice to meet you.");
foreach (var extnName in connection.ExtensionProcessors.SelectMany(extn => extn.EhloKeywords))
{
text.AppendLine(extnName);
}
await connection.WriteResponseAsync(new SmtpResponse(StandardSmtpResponseCode.Ok, text.ToString().TrimEnd()));
}
public void Process(IConnection connection, SmtpCommand command)
{
X509Certificate certificate = connection.Server.Behaviour.GetSSLCertificate(connection);
if (certificate == null)
{
connection.WriteResponse(new SmtpResponse(StandardSmtpResponseCode.CommandNotImplemented, "TLS configuration error - no certificate"));
return;
}
connection.WriteResponse(new SmtpResponse(StandardSmtpResponseCode.ServiceReady,
"Ready to start TLS"));
connection.ApplyStreamFilter(stream =>
{
SslStream sslStream = new SslStream(stream);
sslStream.AuthenticateAsServer(certificate
, false,
SslProtocols.Ssl2 | SslProtocols.Ssl3 | SslProtocols.Tls,
false);
return(sslStream);
});
connection.Session.SecureConnection = true;
}
/// <inheritdoc/>
public async Task Process(IConnection connection, SmtpCommand command)
{
await connection.WriteResponse(new SmtpResponse(StandardSmtpResponseCode.OK, "Successfully did nothing")).ConfigureAwait(false);
}
public async Task ProcessAsync(IConnection connection, SmtpCommand command)
{
await connection.WriteResponseAsync(new SmtpResponse(StandardSmtpResponseCode.OK, "Successfully did nothing"));
}
public async Task ProcessAsync(IConnection connection, SmtpCommand command)
{
connection.AbortMessage();
await connection.WriteResponseAsync(new SmtpResponse(StandardSmtpResponseCode.OK, "Rset completed"));
}
void QueueCommand(SmtpCommand type, string command)
{
if (queue == null)
queue = new MemoryBlockStream ();
var bytes = Encoding.UTF8.GetBytes (command + "\r\n");
queue.Write (bytes, 0, bytes.Length);
queued.Add (type);
}
void QueueCommand(SmtpCommand type, string command)
{
#if DEBUG
Console.WriteLine ("C: {0}", command);
#endif
if (queue == null)
queue = new MemoryBlockStream ();
var bytes = Encoding.UTF8.GetBytes (command + "\r\n");
queue.Write (bytes, 0, bytes.Length);
queued.Add (type);
}
public void Process(IConnection connection, SmtpCommand command)
{
connection.WriteResponse(new SmtpResponse(StandardSmtpResponseCode.OK, "Sucessfully did nothing"));
}
void QueueCommand (SmtpCommand type, string command, CancellationToken cancellationToken)
{
var bytes = Encoding.UTF8.GetBytes (command + "\r\n");
// Note: queued commands will be buffered by the stream
Stream.Write (bytes, 0, bytes.Length, cancellationToken);
queued.Add (type);
}
public void Process(IConnection connection, SmtpCommand command)
{
connection.AbortMessage();
connection.WriteResponse(new SmtpResponse(StandardSmtpResponseCode.OK, "Rset completed"));
}
public void Process(IConnection connection, SmtpCommand command)
{
if (command.Arguments.Length > 0)
{
if (connection.Session.Authenticated)
{
throw new SmtpServerException(new SmtpResponse(StandardSmtpResponseCode.BadSequenceOfCommands,
"Already authenticated"));
}
string mechanismId = command.Arguments[0];
IAuthMechanism mechanism = AuthExtensionProcessor.MechanismMap.Get(mechanismId);
if (mechanism == null)
{
throw new SmtpServerException(
new SmtpResponse(StandardSmtpResponseCode.CommandParameterNotImplemented,
"Specified AUTH mechanism not supported"));
}
if (!AuthExtensionProcessor.IsMechanismEnabled(mechanism))
{
throw new SmtpServerException(
new SmtpResponse(StandardSmtpResponseCode.AuthenticationFailure,
"Specified AUTH mechanism not allowed right now (might require secure connection etc)"));
}
IAuthMechanismProcessor authMechanismProcessor =
mechanism.CreateAuthMechanismProcessor(connection);
string initialData = null;
if (command.Arguments.Length > 1)
{
initialData = string.Join(" ", command.Arguments.Skip(1).ToArray());
}
AuthMechanismProcessorStatus status =
authMechanismProcessor.ProcessResponse(initialData);
while (status == AuthMechanismProcessorStatus.Continue)
{
string response = connection.ReadLine();
if (response == "*")
{
connection.WriteResponse(new SmtpResponse(StandardSmtpResponseCode.SyntaxErrorInCommandArguments, "Authentication aborted"));
return;
}
status = authMechanismProcessor.ProcessResponse(response);
}
if (status == AuthMechanismProcessorStatus.Success)
{
connection.WriteResponse(new SmtpResponse(StandardSmtpResponseCode.AuthenticationOK,
"Authenticated OK"));
connection.Session.Authenticated = true;
connection.Session.AuthenticationCredentials = authMechanismProcessor.Credentials;
}
else
{
connection.WriteResponse(new SmtpResponse(StandardSmtpResponseCode.AuthenticationFailure,
"Authentication failure"));
}
}
else
{
throw new SmtpServerException(new SmtpResponse(StandardSmtpResponseCode.SyntaxErrorInCommandArguments,
"Must specify AUTH mechanism as a parameter"));
}
}