Remove window obscurement information from ACTION_OUTSIDE events.
If ACTION_OUTSIDE_EVENTS contain information about whether the touch is
obscured, then a pattern of invisible, untouchable, unfocusable
SYSTEM_ALERT_WINDOWS can be placed across the screen to determine
approximate locations of touch events without the user knowing.
Bug: 31097064
Test: cts-tradefed run commandAndExit cts-dev -m CtsSecurityTestCases -t android.security.cts.MotionEventTest
Change-Id: Iea968ce23e018acf95116896a1ba4c065885b760
diff --git a/services/inputflinger/InputDispatcher.cpp b/services/inputflinger/InputDispatcher.cpp
index 793d59a..8d43488 100644
--- a/services/inputflinger/InputDispatcher.cpp
+++ b/services/inputflinger/InputDispatcher.cpp
@@ -1224,15 +1224,8 @@
if (maskedAction == AMOTION_EVENT_ACTION_DOWN
&& (flags & InputWindowInfo::FLAG_WATCH_OUTSIDE_TOUCH)) {
- int32_t outsideTargetFlags = InputTarget::FLAG_DISPATCH_AS_OUTSIDE;
- if (isWindowObscuredAtPointLocked(windowHandle, x, y)) {
- outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED;
- } else if (isWindowObscuredLocked(windowHandle)) {
- outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_PARTIALLY_OBSCURED;
- }
-
mTempTouchState.addOrUpdateWindow(
- windowHandle, outsideTargetFlags, BitSet32(0));
+ windowHandle, InputTarget::FLAG_DISPATCH_AS_OUTSIDE, BitSet32(0));
}
}
}