I have a spring boot application, which is MVC in nature. All page of this application are being authenticated by CAS SSO. I have used "spring-security-cas" as described at https://www.baeldung.com/spring-security-cas-sso Everything working fine as expected. However, I have one problem - that is, I cannot retrieve attributes and username sent by the CAS server in the following @Bean. What need I do to retrieve all the attributes and and username sent by the CAS server?
@Bean
public CasAuthenticationProvider casAuthenticationProvider() {
CasAuthenticationProvider provider = new CasAuthenticationProvider();
provider.setServiceProperties(serviceProperties());
provider.setTicketValidator(ticketValidator());
provider.setUserDetailsService(
s -> new User("casuser", "Mellon", true, true, true, true,
AuthorityUtils.createAuthorityList("ROLE_ADMIN")));
provider.setKey("CAS_PROVIDER_LOCALHOST_9000");
return provider;
}
First you will need to configure the attributeRepository source and the attributes to be retrieved, in attributeRepository section in CAS server, like:
cas.authn.attributeRepository.jdbc[0].singleRow=false
cas.authn.attributeRepository.jdbc[0].sql=SELECT * FROM USERATTRS WHERE {0}
cas.authn.attributeRepository.jdbc[0].username=username
cas.authn.attributeRepository.jdbc[0].role=role
cas.authn.attributeRepository.jdbc[0].email=email
cas.authn.attributeRepository.jdbc[0].url=jdbc:hsqldb:hsql://localhost:9001/xdb
cas.authn.attributeRepository.jdbc[0].columnMappings.attrname=attrvalue
cas.authn.attributeRepository.defaultAttributesToRelease=username,email,role
Check this example from CAS blog.
Then you need to implement an AuthenticationUserDetailsService at the service to read attributes returned from CAS authentication, something like:
@Component
public class CasUserDetailService implements AuthenticationUserDetailsService {
@Override
public UserDetails loadUserDetails(Authentication authentication) throws UsernameNotFoundException {
CasAssertionAuthenticationToken casAssertionAuthenticationToken = (CasAssertionAuthenticationToken) authentication;
AttributePrincipal principal = casAssertionAuthenticationToken.getAssertion().getPrincipal();
Map attributes = principal.getAttributes();
String uname = (String) attributes.get("username");
String email = (String) attributes.get("email");
String role = (String) attributes.get("role");
String username = authentication.getName();
Collection<SimpleGrantedAuthority> collection = new ArrayList<SimpleGrantedAuthority>();
collection.add(new SimpleGrantedAuthority(role));
return new User(username, "", collection);
}
}
Then, adjust your authenticationProvider with provider.setAuthenticationUserDetailsService(casUserDetailService);