| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.wss4j.common; |
| |
| import java.io.IOException; |
| import java.lang.reflect.Method; |
| |
| import javax.security.auth.callback.Callback; |
| import javax.security.auth.callback.CallbackHandler; |
| import javax.security.auth.callback.NameCallback; |
| import javax.security.auth.callback.PasswordCallback; |
| import javax.security.auth.callback.UnsupportedCallbackException; |
| |
| public class NamePasswordCallbackHandler implements CallbackHandler { |
| |
| private static final org.slf4j.Logger LOG = |
| org.slf4j.LoggerFactory.getLogger(NamePasswordCallbackHandler.class); |
| |
| private static final String PASSWORD_CALLBACK_NAME = "setObject"; |
| private static final Class<?>[] PASSWORD_CALLBACK_TYPES = |
| new Class<?>[]{Object.class, char[].class, String.class}; |
| |
| private String username; |
| private String password; |
| |
| private String passwordCallbackName; |
| |
| public NamePasswordCallbackHandler(String username, String password) { |
| this(username, password, null); |
| } |
| |
| public NamePasswordCallbackHandler(String username, String password, String passwordCallbackName) { |
| this.username = username; |
| this.password = password; |
| this.passwordCallbackName = passwordCallbackName; |
| } |
| |
| public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException { |
| for (int i = 0; i < callbacks.length; i++) { |
| Callback callback = callbacks[i]; |
| if (handleCallback(callback)) { |
| continue; |
| } else if (callback instanceof NameCallback) { |
| ((NameCallback) callback).setName(username); |
| } else if (callback instanceof PasswordCallback) { |
| PasswordCallback pwCallback = (PasswordCallback) callback; |
| pwCallback.setPassword(password.toCharArray()); |
| } else if (!invokePasswordCallback(callback)) { |
| LOG.info("Unsupported callback type " + callbacks[i].getClass().getName()); |
| throw new UnsupportedCallbackException(callbacks[i], "Unsupported callback type " |
| + callbacks[i].getClass().getName()); |
| } |
| } |
| } |
| |
| protected boolean handleCallback(Callback callback) { |
| return false; |
| } |
| |
| /* |
| * This method is called from the handle(Callback[]) method when the specified callback |
| * did not match any of the known callback classes. It looks for the callback method |
| * having the specified method name with one of the supported parameter types. |
| * If found, it invokes the callback method on the object and returns true. |
| * If not, it returns false. |
| */ |
| @SuppressWarnings("InexactVarargsConditional") |
| private boolean invokePasswordCallback(Callback callback) { |
| String cbname = passwordCallbackName == null |
| ? PASSWORD_CALLBACK_NAME : passwordCallbackName; |
| for (Class<?> arg : PASSWORD_CALLBACK_TYPES) { |
| try { |
| Method method = callback.getClass().getMethod(cbname, arg); |
| method.invoke(callback, arg == String.class ? password : password.toCharArray()); |
| return true; |
| } catch (Exception e) { |
| // ignore and continue |
| LOG.warn(e.toString()); |
| } |
| } |
| return false; |
| } |
| |
| } |
| |