From 9bf304bab352fc7efaaa15af1746a3a1617478b0 Mon Sep 17 00:00:00 2001
From: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
Date: Wed, 02 Nov 2022 08:55:17 +0000
Subject: [PATCH] Update to Keycloak 20.0.0

---
 src/main/java/org/keycloak/protocol/cas/endpoints/AuthorizationEndpoint.java |   18 ++++++++++++++++--
 1 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/main/java/org/keycloak/protocol/cas/endpoints/AuthorizationEndpoint.java b/src/main/java/org/keycloak/protocol/cas/endpoints/AuthorizationEndpoint.java
index 865b937..d046247 100644
--- a/src/main/java/org/keycloak/protocol/cas/endpoints/AuthorizationEndpoint.java
+++ b/src/main/java/org/keycloak/protocol/cas/endpoints/AuthorizationEndpoint.java
@@ -35,6 +35,13 @@
     public Response build() {
         MultivaluedMap<String, String> params = session.getContext().getUri().getQueryParameters();
         String service = params.getFirst(CASLoginProtocol.SERVICE_PARAM);
+
+        boolean isSaml11Request = false;
+        if (service == null && params.containsKey(CASLoginProtocol.TARGET_PARAM)) {
+            // SAML 1.1 authorization uses the TARGET parameter instead of service
+            service = params.getFirst(CASLoginProtocol.TARGET_PARAM);
+            isSaml11Request = true;
+        }
         boolean renew = params.containsKey(CASLoginProtocol.RENEW_PARAM);
         boolean gateway = params.containsKey(CASLoginProtocol.GATEWAY_PARAM);
 
@@ -51,6 +58,13 @@
         if (renew) {
             authenticationSession.setClientNote(CASLoginProtocol.RENEW_PARAM, "true");
         }
+        if (gateway) {
+            authenticationSession.setClientNote(CASLoginProtocol.GATEWAY_PARAM, "true");
+        }
+        if (isSaml11Request) {
+            // Flag the session so we can return the ticket as "SAMLart" in the response
+            authenticationSession.setClientNote(CASLoginProtocol.TARGET_PARAM, "true");
+        }
 
         this.event.event(EventType.LOGIN);
         return handleBrowserAuthenticationRequest(authenticationSession, new CASLoginProtocol(session, realm, session.getContext().getUri(), headers, event), gateway, false);
@@ -64,7 +78,7 @@
 
         client = realm.getClients().stream()
                 .filter(c -> CASLoginProtocol.LOGIN_PROTOCOL.equals(c.getProtocol()))
-                .filter(c -> RedirectUtils.verifyRedirectUri(session.getContext().getUri(), service, realm, c) != null)
+                .filter(c -> RedirectUtils.verifyRedirectUri(session, service, c) != null)
                 .findFirst().orElse(null);
         if (client == null) {
             event.error(Errors.CLIENT_NOT_FOUND);
@@ -76,7 +90,7 @@
             throw new ErrorPageException(session, Response.Status.BAD_REQUEST, Messages.CLIENT_DISABLED);
         }
 
-        redirectUri = RedirectUtils.verifyRedirectUri(session.getContext().getUri(), service, realm, client);
+        redirectUri = RedirectUtils.verifyRedirectUri(session, service, client);
 
         event.client(client.getClientId());
         event.detail(Details.REDIRECT_URI, redirectUri);

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