commit f016e174139eaf463152f15111a70b3c8b7435d6
author Hall Liu <hallliu@google.com> Tue Sep 22 19:15:20 2020 -0700
committer android-build-team Robot <android-build-team-robot@google.com> Thu Oct 01 03:37:07 2020 +0000
tree ba153ac48e5fa3eb1b6af4095eb61a424444be50
parent 993fde6accd692f8750bf61ebae2aec47ff6e3e8

Require MODIFY_PHONE_STATE for preferred TTY mode

Now that ACTION_TTY_PREFERRED_MODE_CHANGED is no longer a protected
broadcast, require the sender to have MODIFY_PHONE_STATE.

Bug: 169196062
Test: atest TelecomManagerTest, manual
Change-Id: I9e16429e25faa326dfa1f93284c34346573320ee
(cherry picked from commit 7fa20a84e387e3e9ec0c5e5fc5510749d2db0ed6)

src/com/android/server/telecom/TtyManager.java

diff --git a/src/com/android/server/telecom/TtyManager.java b/src/com/android/server/telecom/TtyManager.java
index 2d04234..dfddb8f 100644
--- a/src/com/android/server/telecom/TtyManager.java
+++ b/src/com/android/server/telecom/TtyManager.java
@@ -49,7 +49,9 @@
 
         IntentFilter intentFilter = new IntentFilter(
                 TelecomManager.ACTION_TTY_PREFERRED_MODE_CHANGED);
-        mContext.registerReceiver(mReceiver, intentFilter);
+        mContext.registerReceiver(mReceiver, intentFilter,
+                android.Manifest.permission.MODIFY_PHONE_STATE,
+                null);
 
         updateCurrentTtyMode();
     }