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import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.authority.mapping.GrantedAuthoritiesMapper;
import org.springframework.security.oauth2.client.oidc.web.logout.OidcClientInitiatedLogoutSuccessHandler;
import org.springframework.security.oauth2.client.registration.ClientRegistration;
import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;
import org.springframework.security.oauth2.client.registration.InMemoryClientRegistrationRepository;
import org.springframework.security.oauth2.core.AuthorizationGrantType;
import org.springframework.security.oauth2.core.oidc.user.OidcUserAuthority;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.csrf.CookieCsrfTokenRepository;
import org.springframework.security.web.csrf.XorCsrfTokenRequestAttributeHandler;
import org.springframework.stereotype.Component;
import java.util.Collection;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
@Configuration
@EnableWebSecurity
@EnableMethodSecurity
public class SecurityConfiguration {
@Value("${authentication.enabled}")
private boolean authenticationEnabled;
// This Bean is used when there is no authentication and there is no keycloak server running due to this bug:
// https://github.com/spring-projects/spring-security/issues/11397#issuecomment-1655906163
// So we overwrite the ClientRegistrationRepository Bean to avoid the IP server lookup.
@Bean
@ConditionalOnProperty(prefix = "authentication", name = "enabled", havingValue = "0")
public ClientRegistrationRepository clientRegistrationRepository() {
ClientRegistration dummyRegistration = ClientRegistration.withRegistrationId("dummy")
.clientId("google-client-id")
.clientSecret("google-client-secret")
.authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE)
.redirectUri("{baseUrl}/login/oauth2/code/{registrationId}")
.scope("openid")
.authorizationUri("https://accounts.google.com/o/oauth2/v2/auth")
.tokenUri("https://www.googleapis.com/oauth2/v4/token")
.userInfoUri("https://www.googleapis.com/oauth2/v3/userinfo")
.jwkSetUri("https://www.googleapis.com/oauth2/v3/certs")
.build();
return new InMemoryClientRegistrationRepository(dummyRegistration);
}
@Bean
SecurityFilterChain clientSecurityFilterChain(HttpSecurity http, ClientRegistrationRepository clientRegistrationRepo) throws Exception {
if (authenticationEnabled) {
http.authorizeHttpRequests(auth -> auth
.requestMatchers(
"/login/**",
"/oauth2/**",
"/actuator/**",
"/v3/api-docs",
"/v3/api-docs/**",
"/swagger-ui/**",
"/swagger-ui.html"
).permitAll()
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.requestMatchers("/**").authenticated()
);
http.oauth2Login(login -> login.defaultSuccessUrl("/", true));
// Open ID Logout
// https://docs.spring.io/spring-security/reference/servlet/oauth2/login/advanced.html#oauth2login-advanced-oidc-logout
OidcClientInitiatedLogoutSuccessHandler successHandler = new OidcClientInitiatedLogoutSuccessHandler(clientRegistrationRepo);
successHandler.setPostLogoutRedirectUri("{baseUrl}");
http.logout(logout -> logout.logoutSuccessHandler(successHandler));
// ---> XSRF Token handling
// https://docs.spring.io/spring-security/reference/servlet/exploits/csrf.html#deferred-csrf-token
// https://stackoverflow.com/questions/74447118/csrf-protection-not-working-with-spring-security-6
XorCsrfTokenRequestAttributeHandler requestHandler = new XorCsrfTokenRequestAttributeHandler();
// set the name of the attribute the CsrfToken will be populated on
requestHandler.setCsrfRequestAttributeName(null);
// Change cookie path
CookieCsrfTokenRepository tokenRepository = CookieCsrfTokenRepository.withHttpOnlyFalse();
tokenRepository.setCookiePath("/");
http.csrf((csrf) -> csrf
.csrfTokenRepository(tokenRepository)
.csrfTokenRequestHandler(requestHandler::handle)
.ignoringRequestMatchers("/logout")
);
// <--- XSRF Token handling
} else {
http.authorizeHttpRequests(auth -> auth
.requestMatchers("/**").permitAll()
);
http.csrf((csrf) -> csrf
.ignoringRequestMatchers("/**")
);
}
return http.build();
}
@Component
@RequiredArgsConstructor
static class GrantedAuthoritiesMapperImpl implements GrantedAuthoritiesMapper {
private static Collection<GrantedAuthority> extractAuthorities(Map<String, Object> claims) {
return ((Collection<String>) claims.get("authorities")).stream()
.map(SimpleGrantedAuthority::new)
.collect(Collectors.toList());
}
@Override
public Collection<? extends GrantedAuthority> mapAuthorities(Collection<? extends GrantedAuthority> authorities) {
Set<GrantedAuthority> mappedAuthorities = new HashSet<>();
authorities.forEach(authority -> {
if (authority instanceof OidcUserAuthority oidcUserAuthority) {
mappedAuthorities.addAll(extractAuthorities(oidcUserAuthority.getIdToken().getClaims()));
}
});
return mappedAuthorities;
}
}
