security/runtime/org.argeo.security.core/src/main/java/org/argeo/security/core/AuthenticatedApplicationContextInitialization.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.security.core;
  17
  18 import java.beans.PropertyDescriptor;
  19
  20 import org.springframework.beans.BeansException;
  21 import org.springframework.beans.PropertyValues;
  22 import org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessor;
  23 import org.springframework.context.ApplicationEvent;
  24 import org.springframework.context.ApplicationListener;
  25 import org.springframework.context.event.ContextRefreshedEvent;
  26
  27 /**
  28  * Executes with a system authentication the instantiation and initialization
  29  * methods of the application context where it has been defined.
  30  */
  31 public class AuthenticatedApplicationContextInitialization extends
  32                 AbstractSystemExecution implements InstantiationAwareBeanPostProcessor,
  33                 ApplicationListener {
  34         // private Log log = LogFactory
  35         // .getLog(AuthenticatedApplicationContextInitialization.class);
  36
  37         @SuppressWarnings("rawtypes")
  38         public Object postProcessBeforeInstantiation(Class beanClass,
  39                         String beanName) throws BeansException {
  40                 // we authenticate when any bean is instantiated
  41                 // we will deauthenticate only when the application context has been
  42                 // refreshed in order to be able to deal with factory beans has well
  43                 if (!isAuthenticatedBySelf()) {
  44                         authenticateAsSystem();
  45                 }
  46                 return null;
  47         }
  48
  49         public boolean postProcessAfterInstantiation(Object bean, String beanName)
  50                         throws BeansException {
  51                 return true;
  52         }
  53
  54         public PropertyValues postProcessPropertyValues(PropertyValues pvs,
  55                         PropertyDescriptor[] pds, Object bean, String beanName)
  56                         throws BeansException {
  57                 return pvs;
  58         }
  59
  60         public Object postProcessBeforeInitialization(Object bean, String beanName)
  61                         throws BeansException {
  62                 // authenticateAsSystem();
  63                 return bean;
  64         }
  65
  66         public Object postProcessAfterInitialization(Object bean, String beanName)
  67                         throws BeansException {
  68                 // NOTE: in case there was an exception in on the initialization method
  69                 // we expect the underlying thread to die and thus the system
  70                 // authentication to be lost. We have currently no way to catch the
  71                 // exception and perform the deauthentication by ourselves.
  72                 // deauthenticateAsSystem();
  73                 return bean;
  74         }
  75
  76         public void onApplicationEvent(ApplicationEvent event) {
  77                 if (event instanceof ContextRefreshedEvent) {
  78                         // make sure that we have deauthenticated after the application
  79                         // context was initialized/refreshed
  80                         // deauthenticateAsSystem();
  81                 }
  82         }
  83
  84 }