/// <summary>
/// Make a HELO command from the given enumerator.
/// </summary>
/// <param name="command">The HELO command that is defined within the token enumerator.</param>
/// <param name="errorResponse">The error that indicates why the command could not be made.</param>
/// <returns>Returns true if a command could be made, false if not.</returns>
public bool TryMakeHelo(out SmtpCommand command, out SmtpResponse errorResponse)
{
command = null;
errorResponse = null;
Enumerator.Take();
Enumerator.Skip(TokenKind.Space);
if (TryMakeDomain(out var domain))
{
command = new HeloCommand(_options, domain);
return(true);
}
// according to RFC5321 the HELO command should only accept the Domain
// and not the address literal, however some mail clients will send the
// address literal and there is no harm in accepting it
if (TryMakeAddressLiteral(out var address))
{
command = new HeloCommand(_options, address);
return(true);
}
errorResponse = SmtpResponse.SyntaxError;
return(false);
}
/// <summary>
/// Make a HELO command from the given enumerator.
/// </summary>
/// <param name="command">The HELO command that is defined within the token enumerator.</param>
/// <param name="errorResponse">The error that indicates why the command could not be made.</param>
/// <returns>Returns true if a command could be made, false if not.</returns>
public bool TryMakeHelo(out SmtpCommand command, out SmtpResponse errorResponse)
{
command = null;
errorResponse = null;
Enumerator.Take();
Enumerator.Skip(TokenKind.Space);
if (TryMakeDomain(out string domain) == false)
{
_options.Logger.LogVerbose("Could not match the domain name (Text={0}).", CompleteTokenizedText());
errorResponse = SmtpResponse.SyntaxError;
return(false);
}
command = new HeloCommand(_options, domain);
return(true);
}
/// <summary>
/// Make a HELO command from the given enumerator.
/// </summary>
/// <param name="enumerator">The enumerator to create the command from.</param>
/// <param name="command">The HELO command that is defined within the token enumerator.</param>
/// <param name="errorResponse">The error that indicates why the command could not be made.</param>
/// <returns>Returns true if a command could be made, false if not.</returns>
public bool TryMakeHelo(TokenEnumerator enumerator, out SmtpCommand command, out SmtpResponse errorResponse)
{
Debug.Assert(enumerator.Peek() == new Token(TokenKind.Text, "HELO"));
command = null;
errorResponse = null;
enumerator.Take();
enumerator.TakeWhile(TokenKind.Space);
string domain;
if (_parser.TryMakeDomain(enumerator, out domain) == false)
{
_logger.LogVerbose("Could not match the domain name (Text={0}).", enumerator.AsText());
errorResponse = SmtpResponse.SyntaxError;
return(false);
}
command = new HeloCommand(domain);
return(true);
}
/// <summary>
/// Make a HELO command from the given enumerator.
/// </summary>
/// <param name="enumerator">The enumerator to create the command from.</param>
/// <param name="command">The HELO command that is defined within the token enumerator.</param>
/// <param name="errorResponse">The error that indicates why the command could not be made.</param>
/// <returns>Returns true if a command could be made, false if not.</returns>
public bool TryMakeHelo(TokenEnumerator enumerator, out SmtpCommand command, out SmtpResponse errorResponse)
{
Debug.Assert(enumerator.Peek() == new Token(TokenKind.Text, "HELO"));
command = null;
errorResponse = null;
enumerator.Take();
enumerator.TakeWhile(TokenKind.Space);
string domain;
if (_parser.TryMakeDomain(enumerator, out domain) == false)
{
_logger.LogVerbose("Could not match the domain name (Text={0}).", enumerator.AsText());
errorResponse = SmtpResponse.SyntaxError;
return false;
}
command = new HeloCommand(domain);
return true;
}
/// <summary>
/// Visit a HELO command.
/// </summary>
/// <param name="command">The command that is being visited.</param>
protected virtual void Visit(HeloCommand command)
{
}