From fa3a2aafec8f7566c40abd365358387d6d8b5ab1 Mon Sep 17 00:00:00 2001
From: Stian Thorgersen <stianst@gmail.com>
Date: Wed, 25 May 2016 08:09:34 +0200
Subject: [PATCH] KEYCLOAK-3034 NullPointerException when log in via Twitter

---
 .../org/keycloak/social/twitter/TwitterIdentityProvider.java   | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/services/src/main/java/org/keycloak/social/twitter/TwitterIdentityProvider.java b/services/src/main/java/org/keycloak/social/twitter/TwitterIdentityProvider.java
index 044dc0df72..d4f74cd9d8 100755
--- a/services/src/main/java/org/keycloak/social/twitter/TwitterIdentityProvider.java
+++ b/services/src/main/java/org/keycloak/social/twitter/TwitterIdentityProvider.java
@@ -113,6 +113,9 @@ public class TwitterIdentityProvider extends AbstractIdentityProvider<OAuth2Iden
         public Response authResponse(@QueryParam("state") String state,
                                      @QueryParam("denied") String denied,
                                      @QueryParam("oauth_verifier") String verifier) {
+            if (denied != null) {
+                return callback.cancelled(state);
+            }
 
             try {
                 Twitter twitter = new TwitterFactory().getInstance();