Home | History | Annotate | Download | only in pm 
      1 /*
      2  * Copyright (C) 2006 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.server.pm;
     18 
     19 import android.content.pm.PackageParser;
     20 import android.content.pm.PermissionInfo;
     21 import android.os.UserHandle;
     22 
     23 final class BasePermission {
     24     final static int TYPE_NORMAL = 0;
     25 
     26     final static int TYPE_BUILTIN = 1;
     27 
     28     final static int TYPE_DYNAMIC = 2;
     29 
     30     final String name;
     31 
     32     String sourcePackage;
     33 
     34     PackageSettingBase packageSetting;
     35 
     36     final int type;
     37 
     38     int protectionLevel;
     39 
     40     PackageParser.Permission perm;
     41 
     42     PermissionInfo pendingInfo;
     43 
     44     /** UID that owns the definition of this permission */
     45     int uid;
     46 
     47     /** Additional GIDs given to apps granted this permission */
     48     private int[] gids;
     49 
     50     /**
     51      * Flag indicating that {@link #gids} should be adjusted based on the
     52      * {@link UserHandle} the granted app is running as.
     53      */
     54     private boolean perUser;
     55 
     56     BasePermission(String _name, String _sourcePackage, int _type) {
     57         name = _name;
     58         sourcePackage = _sourcePackage;
     59         type = _type;
     60         // Default to most conservative protection level.
     61         protectionLevel = PermissionInfo.PROTECTION_SIGNATURE;
     62     }
     63 
     64     @Override
     65     public String toString() {
     66         return "BasePermission{" + Integer.toHexString(System.identityHashCode(this)) + " " + name
     67                 + "}";
     68     }
     69 
     70     public void setGids(int[] gids, boolean perUser) {
     71         this.gids = gids;
     72         this.perUser = perUser;
     73     }
     74 
     75     public int[] computeGids(int userId) {
     76         if (perUser) {
     77             final int[] userGids = new int[gids.length];
     78             for (int i = 0; i < gids.length; i++) {
     79                 userGids[i] = UserHandle.getUid(userId, gids[i]);
     80             }
     81             return userGids;
     82         } else {
     83             return gids;
     84         }
     85     }
     86 
     87     public boolean isRuntime() {
     88         return (protectionLevel & PermissionInfo.PROTECTION_MASK_BASE)
     89                 == PermissionInfo.PROTECTION_DANGEROUS;
     90     }
     91 
     92     public boolean isDevelopment() {
     93         return (protectionLevel & PermissionInfo.PROTECTION_MASK_BASE)
     94                 == PermissionInfo.PROTECTION_SIGNATURE
     95                 && (protectionLevel & PermissionInfo.PROTECTION_FLAG_DEVELOPMENT) != 0;
     96     }
     97 
     98     public boolean isInstant() {
     99         return (protectionLevel & PermissionInfo.PROTECTION_FLAG_INSTANT) != 0;
    100     }
    101 
    102     public boolean isRuntimeOnly() {
    103         return (protectionLevel & PermissionInfo.PROTECTION_FLAG_RUNTIME_ONLY) != 0;
    104     }
    105 }
    106