From ba3aeed507b4af79be3dee4ea401a542b47247e1 Mon Sep 17 00:00:00 2001
From: Chalard Jean <jchalard@google.com>
Date: Mon, 20 May 2019 13:11:37 +0900
Subject: [PATCH] [RESTRICT AUTOMERGE] Protect VPN dialogs against overlay.

Bug: 130568701
Test: manual. After this, can't display on top of it
Change-Id: Ib032f800edb0416cc15f01a34954340d0d0ffa78
(cherry picked from commit 4e80dc2861614d25a1f957f50040a8cf04812d11)
(cherry picked from commit 27d47340496580d66f36a734a115e47eaf550972)
---
 packages/VpnDialogs/AndroidManifest.xml                        | 2 ++
 .../VpnDialogs/src/com/android/vpndialogs/ConfirmDialog.java   | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/packages/VpnDialogs/AndroidManifest.xml b/packages/VpnDialogs/AndroidManifest.xml
index ef640d5fcedb..1e15b2257c21 100644
--- a/packages/VpnDialogs/AndroidManifest.xml
+++ b/packages/VpnDialogs/AndroidManifest.xml
@@ -1,6 +1,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
         package="com.android.vpndialogs">
 
+    <uses-permission android:name="android.permission.HIDE_NON_SYSTEM_OVERLAY_WINDOWS"/>
+
     <application android:label="VpnDialogs"
             android:allowBackup="false" >
         <activity android:name=".ConfirmDialog"
diff --git a/packages/VpnDialogs/src/com/android/vpndialogs/ConfirmDialog.java b/packages/VpnDialogs/src/com/android/vpndialogs/ConfirmDialog.java
index 6faf4e09fcbb..65f99268ec77 100644
--- a/packages/VpnDialogs/src/com/android/vpndialogs/ConfirmDialog.java
+++ b/packages/VpnDialogs/src/com/android/vpndialogs/ConfirmDialog.java
@@ -16,6 +16,8 @@
 
 package com.android.vpndialogs;
 
+import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;
+
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
@@ -76,6 +78,7 @@ protected void onResume() {
             setupAlert();
 
             getWindow().setCloseOnTouchOutside(false);
+            getWindow().addPrivateFlags(PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS);
             mButton = mAlert.getButton(DialogInterface.BUTTON_POSITIVE);
             mButton.setEnabled(false);
             mButton.setFilterTouchesWhenObscured(true);