/*
* Copyright 2002-2016 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.security.config.authentication;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.ProviderManager;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.BeanIds;
import org.springframework.security.core.userdetails.UserDetailsService;
import java.util.Arrays;
/**
* Factory bean for the namespace AuthenticationManager, which allows a more meaningful
* error message to be reported in the <tt>NoSuchBeanDefinitionException</tt>, if the user
* has forgotten to declare the <authentication-manager> element.
*
* @author Luke Taylor
* @since 3.0
*/
public class AuthenticationManagerFactoryBean implements
FactoryBean<AuthenticationManager>, BeanFactoryAware {
private BeanFactory bf;
public static final String MISSING_BEAN_ERROR_MESSAGE = "Did you forget to add a global <authentication-manager> element "
+ "to your configuration (with child <authentication-provider> elements)? Alternatively you can use the "
+ "authentication-manager-ref attribute on your <http> and <global-method-security> elements.";
public AuthenticationManager getObject() throws Exception {
try {
return (AuthenticationManager) bf.getBean(BeanIds.AUTHENTICATION_MANAGER);
}
catch (NoSuchBeanDefinitionException e) {
if (BeanIds.AUTHENTICATION_MANAGER.equals(e.getBeanName())) {
try {
UserDetailsService uds = bf.getBean(UserDetailsService.class);
DaoAuthenticationProvider provider = new DaoAuthenticationProvider();
provider.setUserDetailsService(uds);
provider.afterPropertiesSet();
return new ProviderManager(
Arrays.<AuthenticationProvider> asList(provider));
}
catch (NoSuchBeanDefinitionException noUds) {
}
throw new NoSuchBeanDefinitionException(BeanIds.AUTHENTICATION_MANAGER,
MISSING_BEAN_ERROR_MESSAGE);
}
throw e;
}
}
public Class<? extends AuthenticationManager> getObjectType() {
return ProviderManager.class;
}
public boolean isSingleton() {
return true;
}
public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
bf = beanFactory;
}
}