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Merge "DO NOT MERGE Backporting potential usb tapjacking precaution." into nyc-mr1-dev

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This commit is contained in:
Beverly Tai
2017-09-14 17:16:48 +00:00
committed by Android (Google) Code Review
parent 0a93f42be2 87949cf278
commit 61bc3f3c9b
2 changed files with 34 additions and 0 deletions
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6
packages/SystemUI/res/values/strings.xml
View File

@@ -1672,4 +1672,10 @@
<!-- Label that replaces other notification controls when the notification is from the system
and cannot be silenced (see @string/show_silently) or blocked (see @string/block) -->
<string name="cant_silence_or_block">Notifications can\'t be silenced or blocked</string>
<!-- Warning shown when user input has been blocked due to another app overlaying screen
content. Since we don't know what the app is showing on top of the input target, we
can't verify user consent. [CHAR LIMIT=NONE] -->
<string name="touch_filtered_warning">Because an app is obscuring a permission request, Settings
can’t verify your response.</string>
</resources>

28
packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingActivity.java
View File

@@ -31,8 +31,12 @@ import android.os.ServiceManager;
import android.os.SystemProperties;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.CheckBox;
import android.widget.Toast;
import com.android.internal.app.AlertActivity;
import com.android.internal.app.AlertController;
@@ -48,6 +52,10 @@ public class UsbDebuggingActivity extends AlertActivity
@Override
public void onCreate(Bundle icicle) {
Window window = getWindow();
window.addPrivateFlags(WindowManager.LayoutParams.PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS);
window.setType(WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG);
super.onCreate(icicle);
if (SystemProperties.getInt("service.adb.tcp.port", 0) == 0) {
@@ -79,6 +87,26 @@ public class UsbDebuggingActivity extends AlertActivity
ap.mView = checkbox;
setupAlert();
// adding touch listener on affirmative button - checks if window is obscured
// if obscured, do not let user give permissions (could be tapjacking involved)
final View.OnTouchListener filterTouchListener = new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
// Filter obscured touches by consuming them.
if (((event.getFlags() & MotionEvent.FLAG_WINDOW_IS_OBSCURED) != 0)
|| ((event.getFlags() & MotionEvent.FLAG_WINDOW_IS_PARTIALLY_OBSCURED) != 0)) {
if (event.getAction() == MotionEvent.ACTION_UP) {
Toast.makeText(v.getContext(),
R.string.touch_filtered_warning,
Toast.LENGTH_SHORT).show();
}
return true;
}
return false;
}
};
mAlert.getButton(BUTTON_POSITIVE).setOnTouchListener(filterTouchListener);
}
private class UsbDisconnectedReceiver extends BroadcastReceiver {