001/**
002 * Copyright 2005-2017 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.kuali.rice.ksb.config.wss4j;
017
018import org.apache.wss4j.common.ext.WSPasswordCallback;
019import org.kuali.rice.core.api.config.ConfigurationException;
020import org.kuali.rice.core.api.config.property.Config;
021import org.kuali.rice.core.api.config.property.ConfigContext;
022
023import javax.security.auth.callback.Callback;
024import javax.security.auth.callback.CallbackHandler;
025import javax.security.auth.callback.UnsupportedCallbackException;
026import java.io.IOException;
027
028
029/**
030 * Workflow CryptoPasswordCallbackHandler which retrieves the keystore password
031 * from the workflow Config.
032 * 
033 * @author Kuali Rice Team (rice.collab@kuali.org)
034 */
035public class CryptoPasswordCallbackHandler implements CallbackHandler {
036
037    /**
038     * The actual CallBackHandler implementation.
039     */
040    public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
041        for (int i = 0; i < callbacks.length; i++) {
042            if (callbacks[i] instanceof WSPasswordCallback) {
043                WSPasswordCallback pc = (WSPasswordCallback) callbacks[i];
044                String password = ConfigContext.getCurrentContextConfig().getKeystorePassword();
045                if (password == null) {
046                        throw new ConfigurationException("Could not locate the webservice password.  Should be configured as the '" + Config.KEYSTORE_PASSWORD + "' property.");
047                }
048                pc.setPassword(password);
049            } else {
050                throw new UnsupportedCallbackException(callbacks[i], "Unrecognized Callback");
051            }
052        }
053    }
054}