content: /**
   * 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.activemq.jaas;
  
  import java.util.Map;
  
  import javax.security.auth.Subject;
  import javax.security.auth.callback.CallbackHandler;
  
  import org.jasypt.encryption.pbe.StandardPBEStringEncryptor;
  import org.jasypt.encryption.pbe.config.EnvironmentStringPBEConfig;
  import org.jasypt.iv.RandomIvGenerator;
  import org.jasypt.properties.EncryptableProperties;
  
  /**
   * LDAPLoginModule that supports encryption
   */
  public class EncryptableLDAPLoginModule extends LDAPLoginModule {
  
      private static final String ENCRYPTION_PASSWORD = "encryptionPassword";
      private static final String PASSWORD_ENV_NAME = "passwordEnvName";
      private static final String PASSWORD_ALGORITHM = "encryptionAlgorithm";
      private static final String DEFAULT_PASSWORD_ENV_NAME = "ACTIVEMQ_ENCRYPTION_PASSWORD";
      private static final String DEFAULT_PASSWORD_ALGORITHM = "PBEWithMD5AndDES";
      private final StandardPBEStringEncryptor configurationEncryptor = new StandardPBEStringEncryptor();
  
      @SuppressWarnings({ "rawtypes", "unchecked" })
      @Override
      public void initialize(Subject subject, CallbackHandler callbackHandler, Map sharedState, Map options) {
  
          String encryptionPassword = (String)options.get(ENCRYPTION_PASSWORD);
          String passwordEnvName = options.get(PASSWORD_ENV_NAME) != null ?
                  (String)options.get(PASSWORD_ENV_NAME) : DEFAULT_PASSWORD_ENV_NAME;
          String passwordAlgorithm = options.get(PASSWORD_ALGORITHM) != null ?
                  (String)options.get(PASSWORD_ALGORITHM) : DEFAULT_PASSWORD_ALGORITHM;
  
          EnvironmentStringPBEConfig envConfig = new EnvironmentStringPBEConfig();
          envConfig.setAlgorithm(passwordAlgorithm);
  
          if (passwordAlgorithm.startsWith("PBE") && passwordAlgorithm.contains("AES")) {
              envConfig.setIvGenerator(new RandomIvGenerator());
          }
  
          //If the password was set, use it
          //else look up the password from the environment
          if (encryptionPassword == null) {
              envConfig.setPasswordEnvName(passwordEnvName);
          } else {
              envConfig.setPassword(encryptionPassword);
          }
  
          configurationEncryptor.setConfig(envConfig);
          EncryptableProperties encryptableOptions
              = new EncryptableProperties(configurationEncryptor);
          encryptableOptions.putAll(options);
  
          super.initialize(subject, callbackHandler, sharedState, encryptableOptions);
  
      }
  
  }
  