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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.car.internal;
     18 
     19 import android.content.Context;
     20 import android.content.pm.PackageManager;
     21 import android.os.Binder;
     22 import android.os.Process;
     23 
     24 /**
     25  * Represent an Android permission.
     26  *
     27  * @hide
     28  */
     29 public class CarPermission {
     30     private final Context mContext;
     31     private final String mName;
     32 
     33     /** @hide */
     34     public CarPermission(Context context, String name) {
     35         mContext = context;
     36         mName = name;
     37     }
     38 
     39     /** @hide */
     40     public boolean checkGranted() {
     41         if (mName != null) {
     42             if (Binder.getCallingUid() != Process.myUid()) {
     43                 return PackageManager.PERMISSION_GRANTED ==
     44                         mContext.checkCallingOrSelfPermission(mName);
     45             }
     46         }
     47         return true;
     48     }
     49 
     50     /** @hide */
     51     public void assertGranted() {
     52         if (checkGranted()) return;
     53         throw new SecurityException(
     54                 "client does not have permission:"
     55                         + mName
     56                         + " pid:"
     57                         + Binder.getCallingPid()
     58                         + " uid:"
     59                         + Binder.getCallingUid());
     60     }
     61 
     62     /** @hide */
     63     @Override
     64     public String toString() {
     65         return mName;
     66     }
     67 }
     68