| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.uwb; |
| |
| import static android.Manifest.permission.UWB_RANGING; |
| import static android.content.PermissionChecker.PERMISSION_GRANTED; |
| |
| import android.annotation.NonNull; |
| import android.content.AttributionSource; |
| import android.content.Context; |
| import android.content.PermissionChecker; |
| import android.os.IBinder; |
| import android.os.ServiceManager; |
| import android.uwb.IUwbAdapter; |
| |
| |
| /** |
| * To be used for dependency injection (especially helps mocking static dependencies). |
| */ |
| public class UwbInjector { |
| private static final String TAG = "UwbInjector"; |
| |
| private static final String VENDOR_SERVICE_NAME = "uwb_vendor"; |
| |
| private final Context mContext; |
| |
| public UwbInjector(@NonNull Context context) { |
| mContext = context; |
| } |
| |
| /** |
| * @return Returns the vendor service handle. |
| */ |
| public IUwbAdapter getVendorService() { |
| IBinder b = ServiceManager.getService(VENDOR_SERVICE_NAME); |
| if (b == null) return null; |
| return IUwbAdapter.Stub.asInterface(b); |
| } |
| |
| /** |
| * Throws security exception if the UWB_RANGING permission is not granted for the calling app. |
| * |
| * <p>Should be used in situations where the app op should not be noted. |
| */ |
| public void enforceUwbRangingPermissionForPreflight( |
| @NonNull AttributionSource attributionSource) { |
| if (!attributionSource.checkCallingUid()) { |
| throw new SecurityException("Invalid attribution source " + attributionSource); |
| } |
| int permissionCheckResult = PermissionChecker.checkPermissionForPreflight( |
| mContext, UWB_RANGING, attributionSource); |
| if (permissionCheckResult != PERMISSION_GRANTED) { |
| throw new SecurityException("Caller does not hold UWB_RANGING permission"); |
| } |
| } |
| |
| /** |
| * Returns true if the UWB_RANGING permission is granted for the calling app. |
| * |
| * <p>Should be used in situations where data will be delivered and hence the app op should |
| * be noted. |
| */ |
| public boolean checkUwbRangingPermissionForDataDelivery( |
| @NonNull AttributionSource attributionSource, @NonNull String message) { |
| int permissionCheckResult = PermissionChecker.checkPermissionForDataDelivery( |
| mContext, UWB_RANGING, -1, attributionSource, message); |
| return permissionCheckResult == PERMISSION_GRANTED; |
| } |
| } |