Add additional role to Keycloak authentication from outer source - spring-boot

Question

I wanna authenticate users via Keycloak, but I need to add additional roles to Authentication object, that is using by Spring Security. Adding roles are saved in Postgres database.
I tried to override configureGlobal with custom AuthenticationProvider, but it didn't work.
#Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
ApplicationAuthenticationProvider provider = new ApplicationAuthenticationProvider();
provider.setGrantedAuthoritiesMapper(new SimpleAuthorityMapper());
auth.authenticationProvider(provider);
}
#Component
public class ApplicationAuthenticationProvider extends KeycloakAuthenticationProvider {
#Autowired
private UserService userService;
private GrantedAuthoritiesMapper grantedAuthoritiesMapper;
public void setGrantedAuthoritiesMapper(GrantedAuthoritiesMapper grantedAuthoritiesMapper) {
this.grantedAuthoritiesMapper = grantedAuthoritiesMapper;
}
#Override
public Authentication authenticate(Authentication authentication) throws AuthenticationException {
KeycloakAuthenticationToken token = (KeycloakAuthenticationToken) authentication;
List<GrantedAuthority> grantedAuthorities = new ArrayList<>();
String username = ((KeycloakAuthenticationToken) authentication)
.getAccount().getKeycloakSecurityContext().getToken().getPreferredUsername();
List<Role> roles = userService.findRoles(username);
for (Role role : roles) {
grantedAuthorities.add(new KeycloakRole(role.toString()));
}
return new KeycloakAuthenticationToken(token.getAccount(), token.isInteractive(), mapAuthorities(grantedAuthorities));
}
#Override
public boolean supports(Class<?> authentication) {
return authentication.equals(UsernamePasswordAuthenticationToken.class);
}
private Collection<? extends GrantedAuthority> mapAuthorities(
Collection<? extends GrantedAuthority> authorities) {
return grantedAuthoritiesMapper != null
? grantedAuthoritiesMapper.mapAuthorities(authorities)
: authorities;
}
}
Tried to add additional filter, but i'm not sure in correct configuration.
#Bean
#Override
protected KeycloakAuthenticationProcessingFilter keycloakAuthenticationProcessingFilter() throws Exception {
RequestMatcher requestMatcher =
new OrRequestMatcher(
new AntPathRequestMatcher("/api/login"),
new QueryParamPresenceRequestMatcher(OAuth2Constants.ACCESS_TOKEN),
// We're providing our own authorization header matcher
new IgnoreKeycloakProcessingFilterRequestMatcher()
);
return new KeycloakAuthenticationProcessingFilter(authenticationManagerBean(), requestMatcher);
}
// Matches request with Authorization header which value doesn't start with "Basic " prefix
private class IgnoreKeycloakProcessingFilterRequestMatcher implements RequestMatcher {
IgnoreKeycloakProcessingFilterRequestMatcher() {
}
public boolean matches(HttpServletRequest request) {
String authorizationHeaderValue = request.getHeader("Authorization");
return authorizationHeaderValue != null && !authorizationHeaderValue.startsWith("Basic ");
}
}

Answer 1

Now I use Keycloak only for login/password. Roles and permissions now saved in local DB.