001    /**
002     * Copyright 2005-2013 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     */
016    package org.kuali.rice.ksb.config.wss4j;
017    
018    import org.apache.ws.security.WSPasswordCallback;
019    import org.kuali.rice.core.api.config.ConfigurationException;
020    import org.kuali.rice.core.api.config.property.Config;
021    import org.kuali.rice.core.api.config.property.ConfigContext;
022    
023    import javax.security.auth.callback.Callback;
024    import javax.security.auth.callback.CallbackHandler;
025    import javax.security.auth.callback.UnsupportedCallbackException;
026    import 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     */
035    public 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    }