Fix crash downloading posters for HTML5 video.

We use the apache HTTP stack to download the poster images
for HTML5 video. This will crash if there is no host to use
as the "Host" header when making the request. Limit the java
poster downloader to just http or https for now. WebKit seems
able to display posters over other schemes like file://, but
doesn't always get the dimensions right. This fix just stops
us crashing.

Bug: 3180037
Change-Id: Idf51efda5b9ca1f2fe373c1fdb9c6bb7d5e254c8

1 files changed, 27 insertions, 5 deletions

diff --git a/core/java/android/webkit/HTML5VideoViewProxy.java b/core/java/android/webkit/HTML5VideoViewProxy.java
index d8f34e05d2fe..3caf3452822b 100644
--- a/core/java/android/webkit/HTML5VideoViewProxy.java
+++ b/core/java/android/webkit/HTML5VideoViewProxy.java
@@ -46,6 +46,8 @@ import android.widget.VideoView;
 
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Timer;
@@ -344,7 +346,7 @@ class HTML5VideoViewProxy extends Handler
         private static RequestQueue mRequestQueue;
         private static int mQueueRefCount = 0;
         // The poster URL
-        private String mUrl;
+        private URL mUrl;
         // The proxy we're doing this for.
         private final HTML5VideoViewProxy mProxy;
         // The poster bytes. We only touch this on the network thread.
@@ -359,14 +361,30 @@ class HTML5VideoViewProxy extends Handler
         private Handler mHandler;
 
         public PosterDownloader(String url, HTML5VideoViewProxy proxy) {
-            mUrl = url;
+            try {
+                mUrl = new URL(url);
+            } catch (MalformedURLException e) {
+                mUrl = null;
+            }
             mProxy = proxy;
             mHandler = new Handler();
         }
         // Start the download. Called on WebCore thread.
         public void start() {
             retainQueue();
-            mRequestHandle = mRequestQueue.queueRequest(mUrl, "GET", null, this, null, 0);
+
+            if (mUrl == null) {
+                return;
+            }
+
+            // Only support downloading posters over http/https.
+            // FIXME: Add support for other schemes. WebKit seems able to load
+            // posters over other schemes e.g. file://, but gets the dimensions wrong.
+            String protocol = mUrl.getProtocol();
+            if ("http".equals(protocol) || "https".equals(protocol)) {
+                mRequestHandle = mRequestQueue.queueRequest(mUrl.toString(), "GET", null,
+                        this, null, 0);
+            }
         }
         // Cancel the download if active and release the queue. Called on WebCore thread.
         public void cancelAndReleaseQueue() {
@@ -405,12 +423,16 @@ class HTML5VideoViewProxy extends Handler
                 cleanup();
             } else if (mStatusCode >= 300 && mStatusCode < 400) {
                 // We have a redirect.
-                mUrl = mHeaders.getLocation();
+                try {
+                    mUrl = new URL(mHeaders.getLocation());
+                } catch (MalformedURLException e) {
+                    mUrl = null;
+                }
                 if (mUrl != null) {
                     mHandler.post(new Runnable() {
                        public void run() {
                            if (mRequestHandle != null) {
-                               mRequestHandle.setupRedirect(mUrl, mStatusCode,
+                               mRequestHandle.setupRedirect(mUrl.toString(), mStatusCode,
                                        new HashMap<String, String>());
                            }
                        }