public override bool GetParameters(TextBuffer textBuffer)
{
switch (_state)
{
case State.SendAlgorithm:
textBuffer.Add("CHAP_A", "5");
_state = State.ReceiveChallenge;
return false;
case State.SendResponse:
textBuffer.Add("CHAP_N", _name);
textBuffer.Add("CHAP_R", CalcResponse());
_state = State.Finished;
return true;
default:
throw new InvalidOperationException("Unknown authentication state: " + _state);
}
}
public override void SetParameters(TextBuffer textBuffer)
{
switch (_state)
{
case State.ReceiveChallenge:
_algorithm = int.Parse(textBuffer["CHAP_A"], CultureInfo.InvariantCulture);
_identifier = byte.Parse(textBuffer["CHAP_I"], CultureInfo.InvariantCulture);
_challenge = ParseByteString(textBuffer["CHAP_C"]);
_state = State.SendResponse;
if (_algorithm != 0x5)
{
throw new LoginException("Unexpected CHAP authentication algorithm: " + _algorithm);
}
return;
default:
throw new InvalidOperationException("Unknown authentication state: " + _state);
}
}