From 2e8d513c6886debce6153bd94fc5521e899efaa0 Mon Sep 17 00:00:00 2001
From: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
Date: Thu, 02 Mar 2023 09:17:04 +0000
Subject: [PATCH] Update to Keycloak 21.0.1

---
 src/main/java/org/keycloak/protocol/cas/endpoints/LogoutEndpoint.java |   45 +++++++++++++++++++++++++++++++++++----------
 1 files changed, 35 insertions(+), 10 deletions(-)

diff --git a/src/main/java/org/keycloak/protocol/cas/endpoints/LogoutEndpoint.java b/src/main/java/org/keycloak/protocol/cas/endpoints/LogoutEndpoint.java
index b5e011c..ac7d74c 100644
--- a/src/main/java/org/keycloak/protocol/cas/endpoints/LogoutEndpoint.java
+++ b/src/main/java/org/keycloak/protocol/cas/endpoints/LogoutEndpoint.java
@@ -4,18 +4,25 @@
 import org.jboss.resteasy.annotations.cache.NoCache;
 import org.jboss.resteasy.spi.HttpRequest;
 import org.keycloak.common.ClientConnection;
+import org.keycloak.events.Details;
+import org.keycloak.events.Errors;
 import org.keycloak.events.EventBuilder;
+import org.keycloak.events.EventType;
+import org.keycloak.models.ClientModel;
 import org.keycloak.models.KeycloakSession;
 import org.keycloak.models.RealmModel;
 import org.keycloak.models.UserSessionModel;
 import org.keycloak.protocol.cas.CASLoginProtocol;
+import org.keycloak.protocol.oidc.utils.RedirectUtils;
+import org.keycloak.services.ErrorPage;
 import org.keycloak.services.managers.AuthenticationManager;
+import org.keycloak.services.messages.Messages;
 
 import javax.ws.rs.GET;
+import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.Context;
 import javax.ws.rs.core.HttpHeaders;
 import javax.ws.rs.core.Response;
-import javax.ws.rs.core.UriInfo;
 
 public class LogoutEndpoint {
     private static final Logger logger = Logger.getLogger(LogoutEndpoint.class);
@@ -32,31 +39,49 @@
     @Context
     private HttpHeaders headers;
 
-    @Context
-    private UriInfo uriInfo;
-
     private RealmModel realm;
-    private EventBuilder event;
+    private ClientModel client;
+    private String redirectUri;
 
-    public LogoutEndpoint(RealmModel realm, EventBuilder event) {
+    public LogoutEndpoint(RealmModel realm) {
         this.realm = realm;
-        this.event = event;
     }
 
     @GET
     @NoCache
-    public Response logout() {
+    public Response logout(@QueryParam(CASLoginProtocol.SERVICE_PARAM) String service) {
+        checkClient(service);
 
         AuthenticationManager.AuthResult authResult = AuthenticationManager.authenticateIdentityCookie(session, realm, false);
         if (authResult != null) {
             UserSessionModel userSession = authResult.getSession();
             userSession.setNote(AuthenticationManager.KEYCLOAK_LOGOUT_PROTOCOL, CASLoginProtocol.LOGIN_PROTOCOL);
 
+            if (redirectUri != null) {
+                userSession.setNote(CASLoginProtocol.LOGOUT_REDIRECT_URI, redirectUri);
+            }
+
             logger.debug("Initiating CAS browser logout");
-            Response response =  AuthenticationManager.browserLogout(session, realm, authResult.getSession(), uriInfo, clientConnection, headers);
+            Response response =  AuthenticationManager.browserLogout(session, realm, authResult.getSession(), session.getContext().getUri(), clientConnection, headers);
             logger.debug("finishing CAS browser logout");
             return response;
         }
-        return Response.ok().build();
+        return ErrorPage.error(session, null, Response.Status.BAD_REQUEST, Messages.FAILED_LOGOUT);
+    }
+
+    private void checkClient(String service) {
+        if (service == null) {
+            return;
+        }
+
+        client = realm.getClientsStream()
+                .filter(c -> CASLoginProtocol.LOGIN_PROTOCOL.equals(c.getProtocol()))
+                .filter(c -> RedirectUtils.verifyRedirectUri(session, service, c) != null)
+                .findFirst().orElse(null);
+        if (client != null) {
+            redirectUri = RedirectUtils.verifyRedirectUri(session, service, client);
+
+            session.getContext().setClient(client);
+        }
     }
 }

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