org.springframework.boot.autoconfigure.security.oauth2.method.OAuth2MethodSecurityConfiguration Maven / Gradle / Ivy
/*
* Copyright 2012-2015 the original author or authors.
*
* 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.springframework.boot.autoconfigure.security.oauth2.method;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactoryUtils;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.access.PermissionEvaluator;
import org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler;
import org.springframework.security.authentication.AuthenticationTrustResolver;
import org.springframework.security.config.annotation.method.configuration.GlobalMethodSecurityConfiguration;
import org.springframework.security.oauth2.common.OAuth2AccessToken;
import org.springframework.security.oauth2.provider.expression.OAuth2MethodSecurityExpressionHandler;
/**
* Auto-configure an expression handler for method-level security (if the user already has
* {@code @EnableGlobalMethodSecurity}).
*
* @author Greg Turnquist
* @author Dave Syer
* @since 1.3.0
*/
@Configuration
@ConditionalOnClass({ OAuth2AccessToken.class })
@ConditionalOnBean(GlobalMethodSecurityConfiguration.class)
public class OAuth2MethodSecurityConfiguration
implements BeanFactoryPostProcessor, ApplicationContextAware {
private ApplicationContext applicationContext;
@Override
public void setApplicationContext(ApplicationContext applicationContext)
throws BeansException {
this.applicationContext = applicationContext;
}
@Override
public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)
throws BeansException {
OAuth2ExpressionHandlerInjectionPostProcessor processor = new OAuth2ExpressionHandlerInjectionPostProcessor(
this.applicationContext);
beanFactory.addBeanPostProcessor(processor);
}
private static class OAuth2ExpressionHandlerInjectionPostProcessor
implements BeanPostProcessor {
private ApplicationContext applicationContext;
OAuth2ExpressionHandlerInjectionPostProcessor(
ApplicationContext applicationContext) {
this.applicationContext = applicationContext;
}
@Override
public Object postProcessBeforeInitialization(Object bean, String beanName)
throws BeansException {
return bean;
}
@Override
public Object postProcessAfterInitialization(Object bean, String beanName)
throws BeansException {
if (bean instanceof DefaultMethodSecurityExpressionHandler
&& !(bean instanceof OAuth2MethodSecurityExpressionHandler)) {
return getExpressionHandler(
(DefaultMethodSecurityExpressionHandler) bean);
}
return bean;
}
private OAuth2MethodSecurityExpressionHandler getExpressionHandler(
DefaultMethodSecurityExpressionHandler bean) {
OAuth2MethodSecurityExpressionHandler handler = new OAuth2MethodSecurityExpressionHandler();
handler.setApplicationContext(this.applicationContext);
AuthenticationTrustResolver trustResolver = findInContext(
AuthenticationTrustResolver.class);
if (trustResolver != null) {
handler.setTrustResolver(trustResolver);
}
PermissionEvaluator permissions = findInContext(PermissionEvaluator.class);
if (permissions != null) {
handler.setPermissionEvaluator(permissions);
}
handler.setExpressionParser(bean.getExpressionParser());
return handler;
}
private T findInContext(Class type) {
if (BeanFactoryUtils.beanNamesForTypeIncludingAncestors(
this.applicationContext, type).length == 1) {
return this.applicationContext.getBean(type);
}
return null;
}
}
}