From b81acfe676f5aaf84a841a319318729d4a1dd828 Mon Sep 17 00:00:00 2001
From: Bruno Oliveira <bruno@abstractj.org>
Date: Thu, 10 Nov 2016 12:49:40 +0000
Subject: [PATCH] [KEYCLOAK-3086] -  NPE when accessing Account with invalid clientId set as ?referrer, and additional referrer_uri set

---
 src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java |   19 +++++++++----------
 1 files changed, 9 insertions(+), 10 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 03bc9e6..60f5493 100644
--- a/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
+++ b/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
@@ -18,6 +18,7 @@
 package org.keycloak.protocol.oidc.utils;
 
 import org.jboss.logging.Logger;
+import org.keycloak.common.util.UriUtils;
 import org.keycloak.models.ClientModel;
 import org.keycloak.models.Constants;
 import org.keycloak.models.RealmModel;
@@ -41,8 +42,9 @@
     }
 
     public static String verifyRedirectUri(UriInfo uriInfo, String redirectUri, RealmModel realm, ClientModel client) {
-        Set<String> validRedirects = client.getRedirectUris();
-        return verifyRedirectUri(uriInfo, client.getRootUrl(), redirectUri, realm, validRedirects);
+        if (client != null)
+            return verifyRedirectUri(uriInfo, client.getRootUrl(), redirectUri, realm, client.getRedirectUris());
+        return null;
     }
 
     public static Set<String> resolveValidRedirects(UriInfo uriInfo, String rootUrl, Set<String> validRedirects) {
@@ -121,15 +123,12 @@
 
     private static String relativeToAbsoluteURI(UriInfo uriInfo, String rootUrl, String relative) {
         if (rootUrl == null || rootUrl.isEmpty()) {
-            URI baseUri = uriInfo.getBaseUri();
-            String uri = baseUri.getScheme() + "://" + baseUri.getHost();
-            if (baseUri.getPort() != -1) {
-                uri += ":" + baseUri.getPort();
-            }
-            rootUrl = uri;
+            rootUrl = UriUtils.getOrigin(uriInfo.getBaseUri());
         }
-        relative = rootUrl + relative;
-        return relative;
+        StringBuilder sb = new StringBuilder();
+        sb.append(rootUrl);
+        sb.append(relative);
+        return sb.toString();
     }
 
     private static boolean matchesRedirects(Set<String> validRedirects, String redirect) {

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