Java tutorial
/* * ==================================================================== * This file is part of the ebXML Registry by Icar Cnr v3.2 * ("eRICv32" in the following disclaimer). * * "eRICv32" is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * "eRICv32" is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License Version 3 * along with "eRICv32". If not, see <http://www.gnu.org/licenses/>. * * eRICv32 is a forked, derivative work, based on: * - freebXML Registry, a royalty-free, open source implementation of the ebXML Registry standard, * which was published under the "freebxml License, Version 1.1"; * - ebXML OMAR v3.2 Edition, published under the GNU GPL v3 by S. Krushe & P. Arwanitis. * * All derivative software changes and additions are made under * * Copyright (C) 2013 Ing. Antonio Messina <messina@pa.icar.cnr.it> * * This software consists of voluntary contributions made by many * individuals on behalf of the freebxml Software Foundation. For more * information on the freebxml Software Foundation, please see * "http://www.freebxml.org/". * * This product includes software developed by the Apache Software * Foundation (http://www.apache.org/). * * ==================================================================== */ package it.cnr.icar.eric.client.xml.registry.jaas; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import it.cnr.icar.eric.client.xml.registry.util.JAXRResourceBundle; import it.cnr.icar.eric.client.xml.registry.util.ProviderProperties; import java.awt.Frame; import java.util.ResourceBundle; import javax.security.auth.callback.Callback; import javax.security.auth.callback.CallbackHandler; import javax.security.auth.callback.ConfirmationCallback; import javax.security.auth.callback.NameCallback; import javax.security.auth.callback.PasswordCallback; import javax.security.auth.callback.TextOutputCallback; import javax.security.auth.callback.UnsupportedCallbackException; /** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: * * <p>Company: </p> * @author Paul Sterk * @version 1.0 * * This class is a CallbackHandler implementation that is suitable for a thi client server * logging into a server-side keystore on behalf of the user. * The handle(Callback[]) method has been customized such that it can only handle the login method * of LoginContext. */ public class ThinClientCallbackHandler implements CallbackHandler { /* The ResourceBundle for Sun's Auth package. */ @SuppressWarnings("unused") private static final ResourceBundle authResBundle = ResourceBundle.getBundle("sun.security.util.AuthResources"); @SuppressWarnings("unused") private Frame ownerFrame; private static final Log log = LogFactory.getLog(ThinClientCallbackHandler.class); private boolean handleStorePass = true; /** * Default constructor */ public ThinClientCallbackHandler() { } /** Implementation of the handle method specified by * <code> javax.security.auth.callback.CallbackHandler </code> * @param callbacks <code>Array of * javax.security.auth.callback.CallbackHandler</code> * */ public void handle(Callback[] callbacks) throws UnsupportedCallbackException { for (int i = 0; i < callbacks.length; i++) { if (callbacks[i] instanceof TextOutputCallback) { // Ignore this section for now. This will be used when a generic callback handler // is being implemented. In our current implementation, we are only expecting the //login type callback handler. } else if (callbacks[i] instanceof NameCallback) { // For now hard-code the alias of the the RegistryOperator account NameCallback nc = (NameCallback) callbacks[i]; String alias = ProviderProperties.getInstance().getProperty("jaxr-ebxml.security.alias"); if (alias == null) { String message = "Error: the jaxr-ebxml.security.alias " + "property must be set"; log.error(message); System.err.println(message); alias = ""; } nc.setName(alias); } else if (callbacks[i] instanceof PasswordCallback) { // For now hard-code the password of the the RegistryOperator account PasswordCallback pc = (PasswordCallback) callbacks[i]; char[] password = null; if (handleStorePass) { String storepass = ProviderProperties.getInstance() .getProperty("jaxr-ebxml.security.storepass"); if (storepass == null) { storepass = "ebxmlrr"; } password = storepass.toCharArray(); handleStorePass = false; } else { String keypass = ProviderProperties.getInstance().getProperty("jaxr-ebxml.security.keypass"); if (keypass == null) { String message = "Error: the jaxr-ebxml.security.keypass " + "property must be set"; log.error(message); System.err.println(message); keypass = ""; } password = keypass.toCharArray(); } pc.setPassword(password); } else if (callbacks[i] instanceof ConfirmationCallback) { ConfirmationCallback cc = (ConfirmationCallback) callbacks[i]; cc.setSelectedIndex(ConfirmationCallback.OK); } else { throw new UnsupportedCallbackException(callbacks[i], JAXRResourceBundle.getInstance().getString("message.error.unrecognized.callback")); } } } }