/// <exception cref="System.IO.IOException"/>
/// <exception cref="Javax.Security.Auth.Callback.UnsupportedCallbackException"/>
public void Handle(Javax.Security.Auth.Callback.Callback[] callbacks)
{
NameCallback nc = null;
PasswordCallback pc = null;
RealmCallback rc = null;
foreach (Javax.Security.Auth.Callback.Callback callback in callbacks)
{
if (callback is RealmChoiceCallback)
{
continue;
}
else
{
if (callback is NameCallback)
{
nc = (NameCallback)callback;
}
else
{
if (callback is PasswordCallback)
{
pc = (PasswordCallback)callback;
}
else
{
if (callback is RealmCallback)
{
rc = (RealmCallback)callback;
}
else
{
throw new UnsupportedCallbackException(callback, "Unrecognized SASL client callback"
);
}
}
}
}
}
if (nc != null)
{
nc.SetName(userName);
}
if (pc != null)
{
pc.SetPassword(password);
}
if (rc != null)
{
rc.SetText(rc.GetDefaultText());
}
}
//
// Private Methods
//
/// <summary>
/// Process the first challenge from the server
/// and calculate a response
/// </summary>
/// <param name="challenge">The server issued challenge</param>
/// <returns>Client response</returns>
private byte[] OnInitialChallenge(byte[] challenge)
{
DigestChallenge dch =
DigestChallenge.Parse(_encoding.GetString(challenge));
// validate input challenge
if (dch.Nonce == null || dch.Nonce.Length == 0)
{
throw new SaslException("Nonce value missing in server challenge");
}
if (dch.Algorithm != "md5-sess")
{
throw new SaslException("Invalid or missing algorithm value in server challenge");
}
NameCallback nameCB = new NameCallback(AuthorizationId);
PasswordCallback pwdCB = new PasswordCallback();
RealmCallback realmCB = new RealmCallback(dch.Realm);
ISaslCallback[] callbacks = { nameCB, pwdCB, realmCB };
Handler.Handle(callbacks);
DigestResponse response = new DigestResponse();
response.Username = nameCB.Text;
response.Realm = realmCB.Text;
response.Nonce = dch.Nonce;
response.Cnonce = Cnonce;
response.NonceCount = 1;
response.Qop = DigestQop.Auth; // only auth supported for now
response.DigestUri = Protocol.ToLower() + "/" + ServerName;
response.MaxBuffer = dch.MaxBuffer;
response.Charset = dch.Charset;
response.Cipher = null; // not supported for now
response.Authzid = AuthorizationId;
response.AuthParam = dch.AuthParam;
response.Response = CalculateResponse(
nameCB.Text, realmCB.Text, pwdCB.Text,
dch.Nonce, response.NonceCount, response.Qop, response.DigestUri
);
return(_encoding.GetBytes(response.ToString()));
}
/// <exception cref="Javax.Security.Auth.Callback.UnsupportedCallbackException"/>
public virtual void Handle(Javax.Security.Auth.Callback.Callback[] callbacks)
{
NameCallback nc = null;
PasswordCallback pc = null;
RealmCallback rc = null;
foreach (Javax.Security.Auth.Callback.Callback callback in callbacks)
{
if (callback is RealmChoiceCallback)
{
continue;
}
else
{
if (callback is NameCallback)
{
nc = (NameCallback)callback;
}
else
{
if (callback is PasswordCallback)
{
pc = (PasswordCallback)callback;
}
else
{
if (callback is RealmCallback)
{
rc = (RealmCallback)callback;
}
else
{
throw new UnsupportedCallbackException(callback, "Unrecognized SASL client callback"
);
}
}
}
}
}
if (nc != null)
{
if (Log.IsDebugEnabled())
{
Log.Debug("SASL client callback: setting username: "******"SASL client callback: setting userPassword");
}
pc.SetPassword(userPassword);
}
if (rc != null)
{
if (Log.IsDebugEnabled())
{
Log.Debug("SASL client callback: setting realm: " + rc.GetDefaultText());
}
rc.SetText(rc.GetDefaultText());
}
}
//
// Private Methods
//
/// <summary>
/// Process the first challenge from the server
/// and calculate a response
/// </summary>
/// <param name="challenge">The server issued challenge</param>
/// <returns>Client response</returns>
private byte[] OnInitialChallenge(byte[] challenge)
{
DigestChallenge dch =
DigestChallenge.Parse(_encoding.GetString(challenge));
// validate input challenge
if ( dch.Nonce == null || dch.Nonce.Length == 0 )
throw new SaslException("Nonce value missing in server challenge");
if ( dch.Algorithm != "md5-sess" )
throw new SaslException("Invalid or missing algorithm value in server challenge");
NameCallback nameCB = new NameCallback(AuthorizationId);
PasswordCallback pwdCB = new PasswordCallback();
RealmCallback realmCB = new RealmCallback(dch.Realm);
ISaslCallback[] callbacks = { nameCB, pwdCB, realmCB };
Handler.Handle(callbacks);
DigestResponse response = new DigestResponse();
response.Username = nameCB.Text;
response.Realm = realmCB.Text;
response.Nonce = dch.Nonce;
response.Cnonce = Cnonce;
response.NonceCount = 1;
response.Qop = DigestQop.Auth; // only auth supported for now
response.DigestUri = Protocol.ToLower() + "/" + ServerName;
response.MaxBuffer = dch.MaxBuffer;
response.Charset = dch.Charset;
response.Cipher = null; // not supported for now
response.Authzid = AuthorizationId;
response.AuthParam = dch.AuthParam;
response.Response = CalculateResponse(
nameCB.Text, realmCB.Text, pwdCB.Text,
dch.Nonce, response.NonceCount, response.Qop, response.DigestUri
);
return _encoding.GetBytes(response.ToString());
}
