/// <summary>
/// Performs the authentication using the SASL Plain authentication mechanism.
/// </summary>
public override void Authenticate()
{
if (this.RequestToken())
{
// Send authentication mechanism
Auth auth = new Auth();
auth.Value = this.BuildMessage();
auth.Mechanism = XmppCodes.SaslXGoogleTokenMechanism;
this.Connection.Send(auth);
this.waitEvent.WaitOne();
if (!this.AuthenticationFailed)
{
// Re-Initialize XMPP Stream
this.Connection.InitializeXmppStream();
// Wait until we receive the Stream features
this.Connection.WaitForStreamFeatures();
}
}
else
{
this.AuthenticationFailed = true;
}
}
/// <summary>
/// Performs the authentication using the SASL digest authentication mechanism.
/// </summary>
public override void Authenticate()
{
// Send authentication mechanism
Auth auth = new Auth();
auth.Mechanism = XmppCodes.SaslDigestMD5Mechanism;
this.Connection.Send(auth);
this.successEvent.WaitOne();
// Verify received Digest-Challenge
// Check that the nonce setting is pressent
if (!this.digestChallenge.ContainsKey("nonce"))
{
throw new XmppException("SASL Authrization failed. Incorrect challenge received from server");
}
// Check that the charset is correct
if (this.digestChallenge.ContainsKey("charset")
&& this.digestChallenge["charset"] != "utf-8")
{
throw new XmppException("SASL Authrization failed. Incorrect challenge received from server");
}
// Check that the mechanims is correct
if (!this.digestChallenge.ContainsKey("algorithm")
|| this.digestChallenge["algorithm"] != "md5-sess")
{
throw new XmppException("SASL Authrization failed. Incorrect challenge received from server");
}
// Send the Digest-Reponse
Response digestResponse = new Response();
digestResponse.Value = this.BuildDigestRespose();
this.Connection.Send(digestResponse);
this.successEvent.WaitOne();
if (this.digestChallenge.ContainsKey("rspauth"))
{
digestResponse = new Response();
this.Connection.Send(digestResponse);
this.successEvent.WaitOne();
}
if (!this.AuthenticationFailed)
{
// Re-Initialize XMPP Stream
this.Connection.InitializeXmppStream();
// Wait until we receive the Stream features
this.Connection.WaitForStreamFeatures();
}
}
