| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.syncope.sra.security.oauth2; |
| |
| import java.net.URI; |
| import java.nio.charset.StandardCharsets; |
| import org.apache.syncope.sra.security.AbstractServerLogoutSuccessHandler; |
| import org.springframework.beans.factory.annotation.Autowired; |
| import org.springframework.beans.factory.annotation.Qualifier; |
| import org.springframework.security.core.Authentication; |
| import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken; |
| import org.springframework.security.oauth2.client.registration.ClientRegistration; |
| import org.springframework.security.oauth2.client.registration.ReactiveClientRegistrationRepository; |
| import org.springframework.security.oauth2.core.oidc.user.OidcUser; |
| import org.springframework.security.web.server.WebFilterExchange; |
| import org.springframework.security.web.server.authentication.logout.RedirectServerLogoutSuccessHandler; |
| import org.springframework.util.Assert; |
| import org.springframework.web.util.UriComponentsBuilder; |
| import reactor.core.publisher.Mono; |
| |
| /** |
| * A reactive logout success handler for initiating OIDC logout through the user agent. |
| * |
| * @see <a href="https://openid.net/specs/openid-connect-session-1_0.html#RPLogout">RP-Initiated Logout</a> |
| * @see org.springframework.security.web.server.authentication.logout.ServerLogoutSuccessHandler |
| */ |
| public class OidcClientInitiatedServerLogoutSuccessHandler extends AbstractServerLogoutSuccessHandler { |
| |
| @Autowired |
| @Qualifier("oidcClientRegistrationRepository") |
| private ReactiveClientRegistrationRepository clientRegistrationRepository; |
| |
| protected final RedirectServerLogoutSuccessHandler serverLogoutSuccessHandler = |
| new RedirectServerLogoutSuccessHandler(); |
| |
| /** |
| * The URL to redirect to after successfully logging out when not originally an OIDC login |
| * |
| * @param logoutSuccessUrl the url to redirect to. Default is "/login?logout". |
| */ |
| public void setLogoutSuccessUrl(final URI logoutSuccessUrl) { |
| Assert.notNull(logoutSuccessUrl, "logoutSuccessUrl cannot be null"); |
| this.serverLogoutSuccessHandler.setLogoutSuccessUrl(logoutSuccessUrl); |
| } |
| |
| @Override |
| public Mono<Void> onLogoutSuccess(final WebFilterExchange exchange, final Authentication authentication) { |
| return Mono.just(authentication). |
| filter(OAuth2AuthenticationToken.class::isInstance). |
| filter(token -> authentication.getPrincipal() instanceof OidcUser). |
| map(OAuth2AuthenticationToken.class::cast). |
| flatMap(this::endSessionEndpoint). |
| map(endSessionEndpoint -> endpointUri(exchange, endSessionEndpoint, authentication)). |
| switchIfEmpty(serverLogoutSuccessHandler.onLogoutSuccess(exchange, authentication).then(Mono.empty())). |
| flatMap(endpointUri -> redirectStrategy.sendRedirect(exchange.getExchange(), endpointUri)); |
| } |
| |
| private Mono<URI> endSessionEndpoint(final OAuth2AuthenticationToken token) { |
| String registrationId = token.getAuthorizedClientRegistrationId(); |
| return clientRegistrationRepository.findByRegistrationId(registrationId). |
| map(ClientRegistration::getProviderDetails). |
| map(ClientRegistration.ProviderDetails::getConfigurationMetadata). |
| flatMap(configurationMetadata -> Mono.justOrEmpty(configurationMetadata.get("end_session_endpoint"))). |
| map(Object::toString). |
| map(URI::create); |
| } |
| |
| private URI endpointUri( |
| final WebFilterExchange exchange, |
| final URI endSessionEndpoint, |
| final Authentication authentication) { |
| |
| UriComponentsBuilder builder = UriComponentsBuilder.fromUri(endSessionEndpoint); |
| builder.queryParam("id_token_hint", idToken(authentication)); |
| |
| URI postLogout = getPostLogout(exchange); |
| builder.queryParam("post_logout_redirect_uri", postLogout); |
| |
| return builder.encode(StandardCharsets.UTF_8).build().toUri(); |
| } |
| |
| private String idToken(final Authentication authentication) { |
| return ((OidcUser) authentication.getPrincipal()).getIdToken().getTokenValue(); |
| } |
| } |