| /* |
| * Copyright (c) 1997-2018 Oracle and/or its affiliates. All rights reserved. |
| * Copyright 2004 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.catalina.realm; |
| |
| |
| import javax.security.auth.callback.*; |
| import java.io.IOException; |
| |
| |
| /** |
| * <p>Implementation of the JAAS <strong>CallbackHandler</code> interface, |
| * used to negotiate delivery of the username and credentials that were |
| * specified to our constructor. No interaction with the user is required |
| * (or possible).</p> |
| * |
| * @author Craig R. McClanahan |
| * @version $Revision: 1.2 $ $Date: 2005/12/08 01:27:52 $ |
| */ |
| |
| public class JAASCallbackHandler implements CallbackHandler { |
| |
| |
| // ------------------------------------------------------------ Constructor |
| |
| |
| /** |
| * Construct a callback handler configured with the specified values. |
| * |
| * @param realm Our associated JAASRealm instance |
| * @param username Username to be authenticated with |
| * @param password Password to be authenticated with |
| */ |
| public JAASCallbackHandler(JAASRealm realm, String username, |
| char[] password) { |
| |
| super(); |
| this.realm = realm; |
| this.username = username; |
| this.password = ((password != null) ? ((char[])password.clone()) : null); |
| |
| } |
| |
| |
| // ----------------------------------------------------- Instance Variables |
| |
| |
| /** |
| * The password to be authenticated with. |
| */ |
| protected char[] password = null; |
| |
| |
| /** |
| * The associated <code>JAASRealm</code> instance. |
| */ |
| protected JAASRealm realm = null; |
| |
| |
| /** |
| * The username to be authenticated with. |
| */ |
| protected String username = null; |
| |
| |
| // --------------------------------------------------------- Public Methods |
| |
| |
| /** |
| * Retrieve the information requested in the provided Callbacks. This |
| * implementation only recognizes <code>NameCallback</code> and |
| * <code>PasswordCallback</code> instances. |
| * |
| * @param callbacks The set of callbacks to be processed |
| * |
| * @exception IOException if an input/output error occurs |
| * @exception UnsupportedCallbackException if the login method requests |
| * an unsupported callback type |
| */ |
| public void handle(Callback callbacks[]) |
| throws IOException, UnsupportedCallbackException { |
| |
| for (int i = 0; i < callbacks.length; i++) { |
| |
| if (callbacks[i] instanceof NameCallback) { |
| if (realm.getDebug() >= 3) |
| realm.log("Returning username " + username); |
| ((NameCallback) callbacks[i]).setName(username); |
| } else if (callbacks[i] instanceof PasswordCallback) { |
| final char[] passwordcontents; |
| if (password != null) { |
| passwordcontents = (char[])password.clone(); |
| } else { |
| passwordcontents = new char[0]; |
| } |
| ((PasswordCallback) callbacks[i]).setPassword |
| (passwordcontents); |
| } else { |
| throw new UnsupportedCallbackException(callbacks[i]); |
| } |
| |
| |
| } |
| |
| } |
| |
| |
| } |