Java tutorial
/** * Copyright (C) 2015 Agro-Know, Deutsches Forschungszentrum fr Knstliche Intelligenz, iMinds, * Institut fr Angewandte Informatik e. V. an der Universitt Leipzig, * Istituto Superiore Mario Boella, Tilde, Vistatec, WRIPL (http://freme-project.eu) * * 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 eu.freme.broker.security; import java.io.IOException; import java.util.ArrayList; import javax.annotation.PostConstruct; import javax.servlet.Filter; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.log4j.Logger; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.beans.factory.annotation.Value; import org.springframework.boot.context.embedded.FilterRegistrationBean; import org.springframework.context.ApplicationContextAware; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.scheduling.annotation.EnableScheduling; import org.springframework.security.access.AccessDecisionVoter; import org.springframework.security.access.vote.AffirmativeBased; import org.springframework.security.authentication.AuthenticationManager; import org.springframework.security.authentication.AuthenticationProvider; import org.springframework.security.authentication.ProviderNotFoundException; import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; import org.springframework.security.config.annotation.web.servlet.configuration.EnableWebMvcSecurity; import org.springframework.security.config.http.SessionCreationPolicy; import org.springframework.security.core.Authentication; import org.springframework.security.core.AuthenticationException; import org.springframework.security.web.AuthenticationEntryPoint; import org.springframework.security.web.authentication.www.BasicAuthenticationFilter; import eu.freme.broker.security.tools.PasswordHasher; import eu.freme.common.persistence.model.User; import eu.freme.common.persistence.repository.UserRepository; import org.springframework.security.web.context.AbstractSecurityWebApplicationInitializer; /** * @author Jan Nehring - jan.nehring@dfki.de */ @Configuration @EnableWebMvcSecurity @EnableScheduling @EnableGlobalMethodSecurity(prePostEnabled = true) public class SecurityConfig extends WebSecurityConfigurerAdapter implements ApplicationContextAware { Logger logger = Logger.getLogger(SecurityConfig.class); @Autowired UserRepository userRepository; @Value("${admin.username:default}") private String adminUsername; @Value("${admin.password:default}") private String adminPassword; @Value("${admin.create:false}") private boolean createAdminUser; @PostConstruct public void init() { // create or promote admin user if it does not exist if (createAdminUser && adminUsername != null) { createAdminUser(); } } private void createAdminUser() { User admin = userRepository.findOneByName(adminUsername); if (admin == null) { logger.info("create new admin user"); String saltedHashedPassword; try { saltedHashedPassword = PasswordHasher.getSaltedHash(adminPassword); } catch (Exception e) { logger.error(e); return; } admin = new User(adminUsername, saltedHashedPassword, User.roleAdmin); userRepository.save(admin); } else if (!admin.getRole().equals(User.roleAdmin)) { logger.info("promote user and change password"); admin.setRole(User.roleAdmin); String saltedHashedPassword; try { saltedHashedPassword = PasswordHasher.getSaltedHash(adminPassword); } catch (Exception e) { logger.error(e); return; } admin.setPassword(saltedHashedPassword); userRepository.save(admin); } } @Override protected void configure(HttpSecurity http) throws Exception { http.csrf().disable().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and() .exceptionHandling().authenticationEntryPoint(unauthorizedEntryPoint()); AuthenticationFilter authenticationFilter = new AuthenticationFilter(authenticationManager()); //FilterRegistrationBean registration = new FilterRegistrationBean(authenticationFilter); //registration.setOrder(0); http.addFilterBefore(authenticationFilter, BasicAuthenticationFilter.class).addFilterBefore( new ManagementEndpointAuthenticationFilter(authenticationManager()), BasicAuthenticationFilter.class); } @Bean public AuthenticationManager authenticationManager() { return new AuthenticationManager() { @Autowired AuthenticationProvider[] authenticationProviders; @Override public Authentication authenticate(Authentication authentication) throws ProviderNotFoundException { for (AuthenticationProvider auth : authenticationProviders) { if (auth.supports(authentication.getClass())) { return auth.authenticate(authentication); } } throw new ProviderNotFoundException( "No AuthenticationProvider found for " + authentication.getClass()); } }; } @Bean public TokenService tokenService() { return new TokenService(); } @Bean public AuthenticationProvider databaseAuthenticationProvider() { return new DatabaseAuthenticationProvider(); } @Bean public AuthenticationProvider tokenAuthenticationProvider() { return new TokenAuthenticationProvider(tokenService()); } @Bean public AuthenticationEntryPoint unauthorizedEntryPoint() { return new AuthenticationEntryPoint() { @Override public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException { response.sendError(HttpServletResponse.SC_UNAUTHORIZED); } }; } @Autowired @Qualifier(AbstractSecurityWebApplicationInitializer.DEFAULT_FILTER_NAME) Filter securityFilter; @Bean public FilterRegistrationBean securityFilterChain() { FilterRegistrationBean registration = new FilterRegistrationBean(securityFilter); registration.setOrder(0); registration.setName(AbstractSecurityWebApplicationInitializer.DEFAULT_FILTER_NAME); return registration; } /* @Bean public AffirmativeBased defaultAccessDecisionManager() { @SuppressWarnings("rawtypes") ArrayList<AccessDecisionVoter> list = new ArrayList<AccessDecisionVoter>(); list.add(new UserAccessDecisionVoter()); list.add(new OwnedResourceAccessDecisionVoter()); AffirmativeBased ab = new AffirmativeBased(list); return ab; } @Bean public AccessLevelHelper accessLevelHelper() { return new AccessLevelHelper(); } */ }