webconfig

package com.baeldung.spring.security.x509;

import java.security.Principal;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.security.access.prepost.PreAuthorize;
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.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@SpringBootApplication
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
@Controller
public class X509AuthenticationServer extends WebSecurityConfigurerAdapter {
    public static void main(String[] args) {
        SpringApplication.run(X509AuthenticationServer.class, args);
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests().anyRequest().authenticated().and().x509().userDetailsService(userDetailsService());
    }
    
    @PreAuthorize("hasAuthority('ROLE_USER')")
    @RequestMapping(value = "/user", method = RequestMethod.GET)
    public String user(Model model, Principal principal) {
        UserDetails currentUser = (UserDetails) ((Authentication) principal).getPrincipal();
        model.addAttribute("username", currentUser.getUsername());
        return "user";
    }
    
    @RequestMapping(value = "/")
    @ResponseBody
    public String index() {
    	return "index";
    }

    @Bean
    public UserDetailsService userDetailsService() {
        return new UserDetailsService() {
            @Override
            public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
                if (username.equals("cid")) {
                    return new User(username, "", AuthorityUtils.commaSeparatedStringToAuthorityList("ROLE_USER"));
                }
                throw new UsernameNotFoundException("User not found!");
            }
        };
    }
}