I have setup a small project to implement OAuth2 Login with Google+ API, using Spring Boot (1.5.2), Spring Security and Spring Security OAuth2.
You can find source in: https://github.com/ccoloradoc/OAuth2Sample
I am able to authenticate with google and pull out user information. However, after I logout I cannot login again since I got a "400 Bad Request", after I attempt to connect "https://accounts.google.com/o/oauth2/auth" with my RestTemplate to invoke google api.
See Filter attemptAuthentication method for further reference.
Here is my Security configuration class
@Configuration
@EnableGlobalAuthentication
@EnableOAuth2Client
@EnableGlobalMethodSecurity(securedEnabled = true, prePostEnabled = true)
@PropertySource(value = {"classpath:oauth.properties"})
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
@Autowired
private UserDetailsService userDetailsService;
@Resource
@Qualifier("accessTokenRequest")
private AccessTokenRequest accessTokenRequest;
@Autowired
private OAuth2ClientContextFilter oAuth2ClientContextFilter;
@Override
protected void configure(HttpSecurity http) throws Exception {
// @formatter:off
http.
authorizeRequests()
.antMatchers(HttpMethod.GET, "/login","/public/**", "/resources/**","/resources/public/**").permitAll()
.antMatchers("/google_oauth2_login").anonymous()
.anyRequest().authenticated()
.and()
.formLogin()
.loginPage("/login")
.loginProcessingUrl("/login")
.defaultSuccessUrl("/")
.and()
.csrf().disable()
.logout()
.logoutSuccessUrl("/")
.logoutUrl("/logout")
.deleteCookies("remember-me")
.and()
.rememberMe()
.and()
.addFilterAfter(oAuth2ClientContextFilter,ExceptionTranslationFilter.class)
.addFilterAfter(googleOAuth2Filter(),OAuth2ClientContextFilter.class)
.userDetailsService(userDetailsService);
// @formatter:on
}
@Bean
@ConfigurationProperties("google.client")
public OAuth2ProtectedResourceDetails auth2ProtectedResourceDetails() {
return new AuthorizationCodeResourceDetails();
}
@Bean
public OAuth2RestTemplate oauth2RestTemplate() {
return new OAuth2RestTemplate(auth2ProtectedResourceDetails(),
new DefaultOAuth2ClientContext(accessTokenRequest));
}
@Bean
public GoogleOAuth2Filter googleOAuth2Filter() {
return new GoogleOAuth2Filter("/google_oauth2_login");
}
/*
* Building our custom Google Provider
* */
@Bean
public GoogleOauth2AuthProvider googleOauth2AuthProvider() {
return new GoogleOauth2AuthProvider();
}
/*
* Using autowired to assign it to the auth manager
* */
@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) {
auth.authenticationProvider(googleOauth2AuthProvider());
}
@Bean
public SpringSecurityDialect springSecurityDialect() {
return new SpringSecurityDialect();
}
@Bean
public TokenStore tokenStore() {
return new InMemoryTokenStore();
}
}
Here is my authentication provider:
public class GoogleOauth2AuthProvider implements AuthenticationProvider {
private static final Logger logger = LoggerFactory.getLogger(GoogleOauth2AuthProvider.class);
@Autowired(required = true)
private UserDetailsService userDetailsService;
@Override
public Authentication authenticate(Authentication authentication) throws AuthenticationException {
logger.info("Provider Manager Executed");
CustomOAuth2AuthenticationToken token = (CustomOAuth2AuthenticationToken) authentication;
UserDetailsImpl registeredUser = (UserDetailsImpl) token.getPrincipal();
try {
registeredUser = (UserDetailsImpl) userDetailsService
.loadUserByUsername(registeredUser.getEmail());
} catch (UsernameNotFoundException usernameNotFoundException) {
logger.info("User trying google/login not already a registered user. Register Him !!");
}
return token;
}
@Override
public boolean supports(Class<?> authentication) {
return CustomOAuth2AuthenticationToken.class
.isAssignableFrom(authentication);
}
}
UserDetailService is an implementation from spring security core that reads user from database and translate it to a UserDetails POJO that implements spring security core UserDetails.
Here is my filter implementation:
public class GoogleOAuth2Filter extends AbstractAuthenticationProcessingFilter {
/**
* Logger
*/
private static final Logger log = LoggerFactory.getLogger(GoogleOAuth2Filter.class);
private static final Authentication dummyAuthentication;
static {
dummyAuthentication = new UsernamePasswordAuthenticationToken(
"dummyUserName23452346789", "dummyPassword54245",
CustomUserDetails.DEFAULT_ROLES);
}
private static final String NAME = "name";
private static final String EMAIL = "email";
private static final String PICTURE = "picture";
private static final Logger logger = LoggerFactory
.getLogger(GoogleOAuth2Filter.class);
@Value(value = "${google.authorization.url}")
private String googleAuhorizationUrl;
public GoogleOAuth2Filter(String defaultFilterProcessesUrl) {
super(defaultFilterProcessesUrl);
}
@Autowired
private UserService userService;
@Autowired
private OAuth2RestTemplate oauth2RestTemplate;
@Autowired
@Override
public void setAuthenticationManager(AuthenticationManager authenticationManager) {
super.setAuthenticationManager(authenticationManager);
}
@Override
public Authentication attemptAuthentication(HttpServletRequest request,
HttpServletResponse response) throws AuthenticationException,
IOException, ServletException {
logger.info("Google Oauth Filter Triggered!!");
URI authURI;
try {
authURI = new URI(googleAuhorizationUrl);
} catch (URISyntaxException e) {
log.error("\n\n\n\nERROR WHILE CREATING GOOGLE AUTH URL", e);
return null;
}
SecurityContext context = SecurityContextHolder.getContext();
// auth null or not authenticated.
String code = request.getParameter("code");
Map<String, String[]> parameterMap = request.getParameterMap();
logger.debug(parameterMap.toString());
if (StringUtils.isEmpty(code)) {
// Google authentication in progress. will return null.
logger.debug("Will set dummy user in context ");
context.setAuthentication(dummyAuthentication);
// trigger google oauth2.
// ERROR ON SECOND LOGIN ATTEMPT
oauth2RestTemplate.postForEntity(authURI, null, Object.class);
return null;
} else {
logger.debug("Response from Google Recieved !!");
ResponseEntity<Object> forEntity = oauth2RestTemplate.getForEntity(
"https://www.googleapis.com/plus/v1/people/me/openIdConnect",
Object.class);
@SuppressWarnings("unchecked")
Map<String, String> profile = (Map<String, String>) forEntity.getBody();
CustomOAuth2AuthenticationToken authenticationToken = getOAuth2Token(
profile.get(EMAIL), profile.get(NAME), profile.get(PICTURE));
authenticationToken.setAuthenticated(false);
return getAuthenticationManager().authenticate(authenticationToken);
}
}
private CustomOAuth2AuthenticationToken getOAuth2Token(
String email, String name, String picture) {
User user = userService.findByEmail(email);
//Register user
if(user == null) {
user = new User(name, email, picture);
userService.saveOrUpdate(user);
}
UserDetailsImpl registeredUser = new UserDetailsImpl(name, email, picture);
CustomOAuth2AuthenticationToken authenticationToken =
new CustomOAuth2AuthenticationToken(registeredUser);
return authenticationToken;
}
}
