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

parent da46dd4e

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

+3 −1

Original line number	Diff line number	Diff line
		@@ -49,7 +49,9 @@ final class TtyManager implements WiredHeadsetManager.Listener {

		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();
		}