protected async Task <CommandBase> GetCommandAsync(String line, List <Type> possibleCommands)
{
if (String.IsNullOrEmpty(line))
{
return(null);
}
CommandBase cmd = null;
String payload = null;
if ((payload = this.GetPayloadByCommand(line, HeloCommand.Command)) != null)
{
cmd = new HeloCommand(payload);
}
else if ((payload = this.GetPayloadByCommand(line, EhloCommand.Command)) != null)
{
cmd = new EhloCommand(payload);
}
else if ((payload = this.GetPayloadByCommand(line, StartTlsCommand.Command)) != null)
{
cmd = new StartTlsCommand(payload);
}
else if ((payload = this.GetPayloadByCommand(line, MailCommand.Command)) != null)
{
cmd = new MailCommand(payload);
}
else if ((payload = this.GetPayloadByCommand(line, RcptCommand.Command)) != null)
{
cmd = new RcptCommand(payload);
}
else if ((payload = this.GetPayloadByCommand(line, DataCommand.Command)) != null)
{
cmd = new DataCommand(payload);
}
else if ((payload = this.GetPayloadByCommand(line, QuitCommand.Command)) != null)
{
cmd = new QuitCommand(payload);
}
else if ((payload = this.GetPayloadByCommand(line, RstCommand.Command)) != null)
{
cmd = new RstCommand(payload);
}
else if ((payload = this.GetPayloadByCommand(line, NoopCommand.Command)) != null)
{
cmd = new NoopCommand(payload);
}
if (cmd != null)
{
if (possibleCommands.Contains(cmd.GetType()))
{
var error = cmd.ParseParameter();
if (error == null)
{
error = await cmd.ParseParameterAsync(this.Connection);
}
if (error != null)
{
await this.Connection.WriteLineAsync(error);
cmd = null;
}
}
else
{
cmd = new InvalidCommand(payload);
}
}
else
{
await this.Connection.WriteLineAsync("500 Unrecognized command");
}
return(cmd);
}
/// <summary>
/// Visit an STARTTLS command.
/// </summary>
/// <param name="command">The command that is being visited.</param>
protected override void Visit(StartTlsCommand command)
{
_output.WriteLine("STARTTLS");
}
public StartTlsState(StartTlsCommand cmd, Connection connection) : this(connection)
{
}
