Refresh token call fails using spring security an oauth2 with error: UserDetailsService is required

Question

I am using Spring Security OAuth2 for authorizations. When trying to refresh the token I get an error: UserDetailsService is required (interestingly I get this error only on unix machines and not on windows). I am using Spring OAuth2 version 2.0.7.

For some reason the AuthenticationManager in the DefaultTokenService is not empty and it tries to authenticate the user to check if he still exists. I think it gets initialized because of some spring security vs. spring oauth2 configuration problems.

I am not using any custom UserDetailsService, hence it should not authenticate the users at this point. However, when I debug it I see that it tries to use one from the WebSecurityConfigurerAdapter and gets to this error. Even if I provide my custom dummy UserDetailsService, it is not using that one, but tries to use the other one, which is null. Am I missing here something? I can not find out why is this happening?

Here is my Oauth2 configuration

@Configuration
@EnableAuthorizationServer
public class OAuth2Config extends AuthorizationServerConfigurerAdapter {

    @Autowired
    private MySpringTokenStore tokenStore;

    @Autowired
    private AuthenticationManager authenticationManager;

    @Autowired
    private MyClientDetailsServiceImpl clientDetailsService;

    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
        endpoints.tokenStore(tokenStore);
        endpoints.authenticationManager(authenticationManager)
          .approvalStoreDisabled();
    }

    @Override
    public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
        clients.withClientDetails(clientDetailsService);
    }

    @Override
    public void configure(AuthorizationServerSecurityConfigurer security) throws Exception {
        security.allowFormAuthenticationForClients();
    }

    @Bean
    public TokenStore tokenStore() {
        return new InMemoryTokenStore();
    }
}

Here is my Spring security configuration

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        // @formatter:off
        http
        .authorizeRequests()
            .antMatchers("/myRest/events/**", "/events/**", "/events", "/myRest/events").permitAll() 
            .antMatchers("/login.jsp", "/login").permitAll() 
        .and()
            .csrf().requireCsrfProtectionMatcher(new AntPathRequestMatcher("/oauth/authorize")).disable()
            .csrf().requireCsrfProtectionMatcher(new AntPathRequestMatcher("/myRest/events")).disable()
        .sessionManagement().sessionFixation().none();
        // @formatter:on
    }


    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring().antMatchers("/index*", "/myRest/events/**", "/events/**", "/myRest/events", "/events", "/swagger/**", "/kibana/**",
            "/elastic/**", "/version/**", "/api-docs/**", "/js/**", "/oauth/uncache_approvals", "/oauth/cache_approvals");
    }
}

Answer 1

Authorization server endpoint needs UserDetailsService. In your OAuth2Config class configure user details service like the following:

@Autowired
private UserDetailsService userDetailsService;

@Override
public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
    endpoints.tokenStore(tokenStore);
    endpoints.userDetailsService(userDetailsService);
    endpoints.authenticationManager(authenticationManager)
      .approvalStoreDisabled();
}

You can also configure it in WebSecurityConfigurerAdapter:

@Autowired
private AuthorizationServerEndpointsConfiguration endpoints;

@Override
protected void configure(HttpSecurity http) throws Exception {

    if (!endpoints.getEndpointsConfigurer().isUserDetailsServiceOverride()) {
        UserDetailsService userDetailsService = http.getSharedObject(UserDetailsService.class);
        endpoints.getEndpointsConfigurer().userDetailsService(userDetailsService);
    }

    // @formatter:off
    http
    .authorizeRequests()
        .antMatchers("/myRest/events/**", "/events/**", "/events", "/myRest/events").permitAll() 
        .antMatchers("/login.jsp", "/login").permitAll() 
    .and()
        .csrf().requireCsrfProtectionMatcher(new AntPathRequestMatcher("/oauth/authorize")).disable()
        .csrf().requireCsrfProtectionMatcher(new AntPathRequestMatcher("/myRest/events")).disable()
    .sessionManagement().sessionFixation().none();
    // @formatter:on
}