/*
 * Copyright 2004,2005 The Apache Software Foundation.
 *
 * 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.apache.rampart.samples.sample03;

import org.apache.ws.security.WSPasswordCallback;

import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;

import java.io.IOException;

public class PWCBHandler implements CallbackHandler {

    public void handle(Callback[] callbacks) throws IOException,
            UnsupportedCallbackException {

        for (int i = 0; i < callbacks.length; i++) {
            
            //When the server side need to authenticate the user
            WSPasswordCallback pwcb = (WSPasswordCallback)callbacks[i];
            if (pwcb.getUsage() == WSPasswordCallback.USERNAME_TOKEN_UNKNOWN) {
                if(pwcb.getIdentifer().equals("bob") && pwcb.getPassword().equals("bobPW")) {
                    //If authentication successful, simply return
                    return;
                } else {
                    throw new UnsupportedCallbackException(callbacks[i], "check failed");
                }
            }
            
            //When the client requests for the password to be added in to the 
            //UT element
            pwcb.setPassword("bobPW");
        }
    }

}