spring security authentication configuration for content-type application/json

SecurityConfig.java

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Map;
import java.util.UUID;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpStatus;
import org.springframework.security.authentication.AuthenticationServiceException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.HttpSecurityBuilder;
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.config.annotation.web.configurers.AbstractAuthenticationFilterConfigurer;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.rememberme.TokenBasedRememberMeServices;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
import org.springframework.security.web.util.matcher.RequestMatcher;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
  private final static String NAME_LOGIN_DATA = "data.login";

  private final UserDetailsService userDetailsService;

  @Value("${app.apiRootPath}")
  private String apiRootPath;

  @Autowired
  public SecurityConfig(UserDetailsService userDetailsService) {
    this.userDetailsService = userDetailsService;
  }

  @Autowired
  public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
    auth.userDetailsService(userDetailsService).passwordEncoder(new BCryptPasswordEncoder());
  }

  @Override
  protected void configure(HttpSecurity http) throws Exception {
    String key = UUID.randomUUID().toString();

    http
      .csrf().disable()
      .exceptionHandling()
      .authenticationEntryPoint(new AuthenticationApiEntryPoint())
      .and()
      .apply(new AuthenticationFilterConfigurer<>(new AuthenticationFilter(), apiRootPath + "/login"))
      .successHandler(new SuccessHandler())
      .failureHandler(new FailureHandler())
      .and()
      .rememberMe()
      .key(key)
      .rememberMeServices(new RememberMeServices(key, userDetailsService))
      .and()
      .authorizeRequests()
      .antMatchers(apiRootPath + "/**")
      .authenticated()
      .anyRequest()
      .permitAll();
  }

  private static class AuthenticationFilterConfigurer<H extends HttpSecurityBuilder<H>> extends
    AbstractAuthenticationFilterConfigurer<H, AuthenticationFilterConfigurer<H>, AuthenticationFilter> {

    AuthenticationFilterConfigurer(AuthenticationFilter authenticationFilter, String defaultLoginProcessingUrl) {
      super(authenticationFilter, defaultLoginProcessingUrl);
    }

    @Override
    protected RequestMatcher createLoginProcessingUrlMatcher(String loginProcessingUrl) {
      return new AntPathRequestMatcher(loginProcessingUrl, "POST");
    }
  }

  private static class AuthenticationFilter extends UsernamePasswordAuthenticationFilter {
    private ObjectMapper objectMapper = new ObjectMapper();

    @Override
    public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {
      if (!request.getMethod().equals("POST")) {
        throw new AuthenticationServiceException("Authentication method not supported: " + request.getMethod());
      }

      try {
        Map<String, Object> data = objectMapper.readValue(request.getInputStream(), new TypeReference<Map<String, Object>>() {});

        request.setAttribute(NAME_LOGIN_DATA, data);

        String username = (String) data.getOrDefault(this.getUsernameParameter(), "");
        String password = (String) data.getOrDefault(this.getPasswordParameter(), "");

        username = username.trim();

        UsernamePasswordAuthenticationToken authRequest = new UsernamePasswordAuthenticationToken(username, password);

        // Allow subclasses to set the "details" property
        this.setDetails(request, authRequest);

        return this.getAuthenticationManager().authenticate(authRequest);
      } catch (IOException e) {
        throw new AuthenticationServiceException("Authentication method not supported: " + request.getMethod(), e);
      }
    }
  }

  private static class AuthenticationApiEntryPoint implements AuthenticationEntryPoint {

    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException {
      response.sendError(HttpStatus.FORBIDDEN.value(), HttpStatus.FORBIDDEN.getReasonPhrase());
    }
  }

  private static class SuccessHandler implements AuthenticationSuccessHandler {

    @Override
    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
      // customize response data
    }
  }

  private static class FailureHandler implements AuthenticationFailureHandler {

    @Override
    public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException {
      response.sendError(HttpStatus.UNAUTHORIZED.value(), HttpStatus.UNAUTHORIZED.getReasonPhrase());
    }
  }

  private static class RememberMeServices extends TokenBasedRememberMeServices {
    RememberMeServices(String key, UserDetailsService userDetailsService) {
      super(key, userDetailsService);
    }

    @Override
    protected boolean rememberMeRequested(HttpServletRequest request, String parameter) {
      if (super.rememberMeRequested(request, parameter)) {
        return true;
      }

      Map data = (Map) request.getAttribute(NAME_LOGIN_DATA);
      String paramValue = (String) data.get(parameter);

      if (paramValue != null && paramValue.equalsIgnoreCase("true")) {
        return true;
      }

      if (logger.isDebugEnabled()) {
        logger.debug(String.format("Did not send remember-me cookie (principal did not set parameter '%s')", parameter));
      }

      return false;
    }
  }
}