| /* |
| * 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 calculator.security; |
| |
| import java.security.Principal; |
| import java.util.Map; |
| |
| import javax.security.auth.Subject; |
| 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.login.LoginException; |
| import javax.security.auth.spi.LoginModule; |
| |
| /** |
| * @version $Rev$ $Date$ |
| */ |
| public class JaasLoginModule implements LoginModule { |
| |
| private CallbackHandler callbackHandler; |
| private Subject subject; |
| private Principal userPrincipal; |
| private String userId; |
| private String password; |
| private boolean succeeded; |
| private boolean commitSucceeded; |
| |
| public void initialize(Subject subject, |
| CallbackHandler callbackHandler, |
| Map<String, ?> sharedState, |
| Map<String, ?> options) { |
| this.callbackHandler = callbackHandler; |
| this.subject = subject; |
| } |
| |
| public boolean login() throws LoginException { |
| Callback[] callbacks = new Callback[2]; |
| callbacks[0] = new NameCallback("UserId:"); |
| callbacks[1] = new PasswordCallback("Password:", false); |
| |
| try { |
| callbackHandler.handle(callbacks); |
| userId = ((NameCallback)callbacks[0]).getName(); |
| password = new String(((PasswordCallback)callbacks[1]).getPassword()); |
| |
| if (userId.equals("CalculatorUser") && password.equals("CalculatorUserPasswd")) { |
| System.out.println("Successfully AUTHENTICATED!!"); |
| succeeded = true; |
| return true; |
| } else { |
| System.out.println("Incorrect userId / password! AUTHENTICATION FAILED!!"); |
| return false; |
| } |
| } catch (Exception e) { |
| e.printStackTrace(); |
| return false; |
| } |
| } |
| |
| /** |
| * <p> This method is called if the LoginContext's |
| * overall authentication succeeded |
| * (the relevant REQUIRED, REQUISITE, SUFFICIENT and OPTIONAL LoginModules |
| * succeeded). |
| * |
| * <p> If this LoginModule's own authentication attempt |
| * succeeded (checked by retrieving the private state saved by the |
| * <code>login</code> method), then this method associates a |
| * <code>UserPrincipal</code> |
| * with the <code>Subject</code> located in the |
| * <code>LoginModule</code>. If this LoginModule's own |
| * authentication attempted failed, then this method removes |
| * any state that was originally saved. |
| * |
| * <p> |
| * |
| * @exception LoginException if the commit fails. |
| * |
| * @return true if this LoginModule's own login and commit |
| * attempts succeeded, or false otherwise. |
| */ |
| public boolean commit() throws LoginException { |
| if (succeeded == false) { |
| return false; |
| } else { |
| // add a Principal (authenticated identity) to the Subject |
| |
| // assume the user we authenticated is the UserPrincipal |
| userPrincipal = new UserPrincipal(userId); |
| if (!subject.getPrincipals().contains(userPrincipal)) |
| subject.getPrincipals().add(userPrincipal); |
| |
| // in any case, clean out state |
| userId = null; |
| password = null; |
| commitSucceeded = true; |
| return true; |
| } |
| } |
| |
| /** |
| * <p> This method is called if the LoginContext's |
| * overall authentication failed. |
| * (the relevant REQUIRED, REQUISITE, SUFFICIENT and OPTIONAL LoginModules |
| * did not succeed). |
| * |
| * <p> If this LoginModule's own authentication attempt |
| * succeeded (checked by retrieving the private state saved by the |
| * <code>login</code> and <code>commit</code> methods), |
| * then this method cleans up any state that was originally saved. |
| * |
| * <p> |
| * |
| * @exception LoginException if the abort fails. |
| * |
| * @return false if this LoginModule's own login and/or commit attempts |
| * failed, and true otherwise. |
| */ |
| public boolean abort() throws LoginException { |
| if (succeeded == false) { |
| return false; |
| } else if (succeeded == true && commitSucceeded == false) { |
| // login succeeded but overall authentication failed |
| succeeded = false; |
| userId = null; |
| password = null; |
| userPrincipal = null; |
| } else { |
| // overall authentication succeeded and commit succeeded, |
| // but someone else's commit failed |
| logout(); |
| } |
| return true; |
| } |
| |
| /** |
| * Logout the user. |
| * |
| * <p> This method removes the <code>SimplePrincipal</code> |
| * that was added by the <code>commit</code> method. |
| * |
| * <p> |
| * |
| * @exception LoginException if the logout fails. |
| * |
| * @return true in all cases since this <code>LoginModule</code> |
| * should not be ignored. |
| */ |
| public boolean logout() throws LoginException { |
| subject.getPrincipals().remove(userPrincipal); |
| succeeded = false; |
| succeeded = commitSucceeded; |
| userId = null; |
| if (password != null) |
| password = null; |
| userPrincipal = null; |
| return true; |
| } |
| |
| } |