I want to create an authorization server using Spring Oauth which is able to issue it's own JWT tokens. The authorization server must delegate the authentication to Google. I have been following this tutorial which does almost everything I want: https://spring.io/guides/tutorials/spring-boot-oauth2/
I was able to add Google as an authentication provider, but I'm struggling with the JWT part.
Here's my authorization server configuration:
@SpringBootApplication
@EnableOAuth2Client
@EnableAuthorizationServer
@Order(SecurityProperties.ACCESS_OVERRIDE_ORDER)
public class MsAuthorizationGmailApplication extends WebSecurityConfigurerAdapter {
@Autowired
OAuth2ClientContext oauth2ClientContext;
@Override
protected void configure(HttpSecurity http) throws Exception {
http.antMatcher("/**").authorizeRequests().antMatchers("/", "/login**", "/webjars/**").permitAll().anyRequest()
.authenticated().and().exceptionHandling()
.authenticationEntryPoint(new LoginUrlAuthenticationEntryPoint("/login/gmail")).and().logout()
.logoutSuccessUrl("/").permitAll().and().csrf()
.csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse()).and()
.addFilterBefore(ssoFilter(), BasicAuthenticationFilter.class);
}
@Bean
@ConfigurationProperties("gmail")
public ClientResources gmail() {
return new ClientResources();
}
private Filter ssoFilter() {
CompositeFilter filter = new CompositeFilter();
List<Filter> filters = new ArrayList<>();
filters.add(ssoFilter(gmail(), "/login/gmail"));
filter.setFilters(filters);
return filter;
}
private Filter ssoFilter(ClientResources client, String path) {
OAuth2ClientAuthenticationProcessingFilter filter = new OAuth2ClientAuthenticationProcessingFilter(
path);
OAuth2RestTemplate template = new OAuth2RestTemplate(client.getClient(), oauth2ClientContext);
filter.setRestTemplate(template);
filter.setTokenServices(JwtConfig.tokenServices());
return filter;
}
public static void main(String[] args) {
SpringApplication.run(MsAuthorizationGmailApplication.class, args);
}
}
In the JWT config I'm not trying to do anything fancy, just trying to make it pass for now:
public final class JwtConfig {
private static final String KEY = "123";
private JwtConfig() {
}
private static JwtAccessTokenConverter accessTokenConverter() {
JwtAccessTokenConverter converter = new JwtAccessTokenConverter();
converter.setSigningKey(KEY);
return converter;
}
private static TokenStore tokenStore() {
return new JwtTokenStore(accessTokenConverter());
}
public static DefaultTokenServices tokenServices() {
DefaultTokenServices defaultTokenServices = new DefaultTokenServices();
defaultTokenServices.setTokenStore(tokenStore());
defaultTokenServices.setSupportRefreshToken(true);
return defaultTokenServices;
}
}
I get the following exception:
org.springframework.security.authentication.BadCredentialsException: Could not obtain user details from token
at org.springframework.security.oauth2.client.filter.OAuth2ClientAuthenticationProcessingFilter.attemptAuthentication(OAuth2ClientAuthenticationProcessingFilter.java:122) ~[spring-security-oauth2-2.0.12.RELEASE.jar:na]
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:212) ~[spring-security-web-4.2.1.RELEASE.jar:4.2.1.RELEASE]
at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:112) [spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:73) [spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]
....
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.11.jar:8.5.11]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121]
Caused by: org.springframework.security.oauth2.common.exceptions.InvalidTokenException: Cannot convert access token to JSON
at org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter.decode(JwtAccessTokenConverter.java:287) ~[spring-security-oauth2-2.0.12.RELEASE.jar:na]
at org.springframework.security.oauth2.provider.token.store.JwtTokenStore.convertAccessToken(JwtTokenStore.java:88) ~[spring-security-oauth2-2.0.12.RELEASE.jar:na]
at org.springframework.security.oauth2.provider.token.store.JwtTokenStore.readAccessToken(JwtTokenStore.java:80) ~[spring-security-oauth2-2.0.12.RELEASE.jar:na]
at org.springframework.security.oauth2.provider.token.DefaultTokenServices.loadAuthentication(DefaultTokenServices.java:229) ~[spring-security-oauth2-2.0.12.RELEASE.jar:na]
at org.springframework.security.oauth2.client.filter.OAuth2ClientAuthenticationProcessingFilter.attemptAuthentication(OAuth2ClientAuthenticationProcessingFilter.java:112) ~[spring-security-oauth2-2.0.12.RELEASE.jar:na]
... 62 common frames omitted
Caused by: java.lang.IllegalArgumentException: JWT must have 3 tokens
at org.springframework.security.jwt.JwtHelper.decode(JwtHelper.java:49) ~[spring-security-jwt-1.0.0.RELEASE.jar:na]
at org.springframework.security.jwt.JwtHelper.decodeAndVerify(JwtHelper.java:74) ~[spring-security-jwt-1.0.0.RELEASE.jar:na]
at org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter.decode(JwtAccessTokenConverter.java:277) ~[spring-security-oauth2-2.0.12.RELEASE.jar:na]
... 66 common frames omitted
How I understand this: It looks like that when Google issues an access token, the authorization server (being a client of Google OAuth) tries to decode the access token as a JWT, and throws an exception because Google's token is not a valid JWT (it's just an access token).
I would like to create a JWT containing the access token (which will be used to access Google APIs) and some additional information about the user. I would also like to be able to refresh the JWT token when the access token expires. Is there any way to achieve this?
