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Merge "DO NOT MERGE Backporting potential usb tapjacking precaution." into mnc-dr-dev

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This commit is contained in:
Beverly Tai
2017-09-14 14:18:07 +00:00
committed by Android (Google) Code Review
parent d0d0fea3d6 fafea6ab91
commit 8150eb82ee
2 changed files with 31 additions and 0 deletions
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5
packages/SystemUI/res/values/strings.xml
View File

@@ -1136,4 +1136,9 @@
<!-- Bluetooth enablement ok text [CHAR LIMIT=40] -->
<string name="enable_bluetooth_confirmation_ok">Turn on</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>

26
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 +87,24 @@ 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 {