From 67a63a806e63692a9ab6614f2258f00d2400c794 Mon Sep 17 00:00:00 2001
From: Thomas Darimont <thomas.darimont@gmail.com>
Date: Mon, 6 Jun 2016 12:05:38 +0200
Subject: [PATCH] KEYCLOAK-3054: Fix potential NPE in RealmsResource

Prior to PR .well-known Endpoint threw NPE with if unknown
Protocol was provided.
---
 .../org/keycloak/services/resources/RealmsResource.java    | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/services/src/main/java/org/keycloak/services/resources/RealmsResource.java b/services/src/main/java/org/keycloak/services/resources/RealmsResource.java
index ae743f399d..f80234df33 100755
--- a/services/src/main/java/org/keycloak/services/resources/RealmsResource.java
+++ b/services/src/main/java/org/keycloak/services/resources/RealmsResource.java
@@ -98,9 +98,14 @@ public class RealmsResource {
                                             final @PathParam("protocol") String protocol) {
         RealmModel realm = init(name);
 
+        LoginProtocolFactory factory = (LoginProtocolFactory)session.getKeycloakSessionFactory().getProviderFactory(LoginProtocol.class, protocol);
+        if(factory == null){
+            logger.debugv("protocol %s not found", protocol);
+            throw new NotFoundException("Protocol not found");
+        }
+
         EventBuilder event = new EventBuilder(realm, session, clientConnection);
 
-        LoginProtocolFactory factory = (LoginProtocolFactory)session.getKeycloakSessionFactory().getProviderFactory(LoginProtocol.class, protocol);
         Object endpoint = factory.createProtocolEndpoint(realm, event);
 
         ResteasyProviderFactory.getInstance().injectProperties(endpoint);