From 8f62c5bc5f405d12ef48e2381fb68a49820513d5 Mon Sep 17 00:00:00 2001
From: Marek Posolda <mposolda@gmail.com>
Date: Wed, 30 Mar 2022 09:55:26 +0000
Subject: [PATCH] OIDC RP-Initiated logout endpoint (#10887)

---
 src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java |   23 ++++++++++++++++-------
 1 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java b/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
index d6e739d..2c7f53b 100644
--- a/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
+++ b/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
@@ -24,6 +24,7 @@
 import org.keycloak.models.KeycloakSession;
 import org.keycloak.models.KeycloakUriInfo;
 import org.keycloak.models.RealmModel;
+import org.keycloak.protocol.oidc.OIDCLoginProtocol;
 import org.keycloak.services.Urls;
 import org.keycloak.services.util.ResolveRelative;
 
@@ -40,6 +41,12 @@
 
     private static final Logger logger = Logger.getLogger(RedirectUtils.class);
 
+    /**
+     * This method is deprecated for performance and security reasons and it is available just for the
+     * backwards compatibility. It is recommended to use some other methods of this class where the client is given as an argument
+     * to the method, so we know the client, which redirect-uri we are trying to resolve.
+     */
+    @Deprecated
     public static String verifyRealmRedirectUri(KeycloakSession session, String redirectUri) {
         Set<String> validRedirects = getValidateRedirectUris(session);
         return verifyRedirectUri(session, null, redirectUri, validRedirects, true);
@@ -70,15 +77,17 @@
         return resolveValidRedirects;
     }
 
+    @Deprecated
     private static Set<String> getValidateRedirectUris(KeycloakSession session) {
-        return session.getContext().getRealm().getClientsStream()
-                .filter(ClientModel::isEnabled)
-                .map(c -> resolveValidRedirects(session, c.getRootUrl(), c.getRedirectUris()))
-                .flatMap(Collection::stream)
-                .collect(Collectors.toSet());
+        RealmModel realm = session.getContext().getRealm();
+        return session.clientStorageManager().getAllRedirectUrisOfEnabledClients(realm).entrySet().stream()
+          .filter(me -> me.getKey().isEnabled() && OIDCLoginProtocol.LOGIN_PROTOCOL.equals(me.getKey().getProtocol()) && !me.getKey().isBearerOnly() && (me.getKey().isStandardFlowEnabled() || me.getKey().isImplicitFlowEnabled()))
+          .map(me -> resolveValidRedirects(session, me.getKey().getRootUrl(), me.getValue()))
+          .flatMap(Collection::stream)
+          .collect(Collectors.toSet());
     }
 
-    private static String verifyRedirectUri(KeycloakSession session, String rootUrl, String redirectUri, Set<String> validRedirects, boolean requireRedirectUri) {
+    public static String verifyRedirectUri(KeycloakSession session, String rootUrl, String redirectUri, Set<String> validRedirects, boolean requireRedirectUri) {
         KeycloakUriInfo uriInfo = session.getContext().getUri();
         RealmModel realm = session.getContext().getRealm();
 
@@ -115,7 +124,7 @@
 
             boolean valid = matchesRedirects(resolveValidRedirects, r);
 
-            if (!valid && r.startsWith(Constants.INSTALLED_APP_URL) && r.indexOf(':', Constants.INSTALLED_APP_URL.length()) >= 0) {
+            if (!valid && (r.startsWith(Constants.INSTALLED_APP_URL) || r.startsWith(Constants.INSTALLED_APP_LOOPBACK)) && r.indexOf(':', Constants.INSTALLED_APP_URL.length()) >= 0) {
                 int i = r.indexOf(':', Constants.INSTALLED_APP_URL.length());
 
                 StringBuilder sb = new StringBuilder();

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