/**
 * $RCSfile$
 * $Revision: $
 * $Date: $
 *
 * Copyright 2003-2004 Jive Software.
 *
 * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jivesoftware.smack;

/**
 * There are two ways to authenticate a user with a server. Using SASL or Non-SASL
 * authentication. This interface makes {@link SASLAuthentication} and
 * {@link NonSASLAuthentication} polyphormic.
 *
 * @author Gaston Dombiak
 */
interface UserAuthentication {

    String authenticate(String username, String password, String resource) throws
            XMPPException;
}