+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * 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.argeo.cms.spring;
+
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.security.auth.Subject;
+
+import org.eclipse.gemini.blueprint.context.DependencyInitializationAwareBeanPostProcessor;
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.support.AbstractBeanFactory;
+import org.springframework.beans.factory.support.SecurityContextProvider;
+import org.springframework.beans.factory.support.SimpleSecurityContextProvider;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+
+/**
+ * Executes with a system authentication the instantiation and initialization
+ * methods of the application context where it has been defined.
+ */
+public class AuthenticatedApplicationContextInitialization extends
+ AbstractSystemExecution implements
+ DependencyInitializationAwareBeanPostProcessor, ApplicationContextAware {
+ /** If non empty, restricts to these beans */
+ private List<String> beanNames = new ArrayList<String>();
+
+ public Object postProcessBeforeInitialization(Object bean, String beanName)
+ throws BeansException {
+ if (beanNames.size() == 0 || beanNames.contains(beanName))
+ authenticateAsSystem();
+ return bean;
+ }
+
+ public Object postProcessAfterInitialization(Object bean, String beanName)
+ throws BeansException {
+ if (beanNames.size() == 0 || beanNames.contains(beanName))
+ deauthenticateAsSystem();
+ return bean;
+ }
+
+ public void setBeanNames(List<String> beanNames) {
+ this.beanNames = beanNames;
+ }
+
+ @Override
+ public void setApplicationContext(ApplicationContext applicationContext)
+ throws BeansException {
+ if (applicationContext.getAutowireCapableBeanFactory() instanceof AbstractBeanFactory) {
+ final AbstractBeanFactory beanFactory = ((AbstractBeanFactory) applicationContext
+ .getAutowireCapableBeanFactory());
+ // retrieve subject's access control context
+ // and set it as the bean factory security context
+ Subject.doAs(getSubject(), new PrivilegedAction<Void>() {
+ @Override
+ public Void run() {
+ SecurityContextProvider scp = new SimpleSecurityContextProvider(
+ AccessController.getContext());
+ beanFactory.setSecurityContextProvider(scp);
+ return null;
+ }
+ });
+ }
+ }
+}