From 5ccdafa074c002454aa2512b52ac77582c303d44 Mon Sep 17 00:00:00 2001
From: Ricki Hirner <hirner@bitfire.at>
Date: Fri, 20 Nov 2015 10:12:48 +0100
Subject: [PATCH] ContactsSyncManager: URL fix

* ContactsSyncManager: don't try to download external resources which do not have a valid URL
---
 .../at/bitfire/davdroid/syncadapter/ContactsSyncManager.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app/src/main/java/at/bitfire/davdroid/syncadapter/ContactsSyncManager.java b/app/src/main/java/at/bitfire/davdroid/syncadapter/ContactsSyncManager.java
index b4621c51..8344e5cd 100644
--- a/app/src/main/java/at/bitfire/davdroid/syncadapter/ContactsSyncManager.java
+++ b/app/src/main/java/at/bitfire/davdroid/syncadapter/ContactsSyncManager.java
@@ -265,6 +265,11 @@ public class ContactsSyncManager extends SyncManager {
         public byte[] download(String url, String accepts) {
             HttpUrl httpUrl = HttpUrl.parse(url);
 
+            if (httpUrl == null) {
+                log.error("Invalid external resource URL");
+                return null;
+            }
+
             String host = httpUrl.host();
             if (host == null) {
                 log.error("External resource URL doesn't specify a host name");