1 /*
2  * Copyright (C) 2020 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 package com.android.server;
17 
18 import static java.util.stream.Collectors.toList;
19 import static java.util.stream.Collectors.toMap;
20 
21 import android.Manifest;
22 import android.content.Context;
23 import android.os.ISystemConfig;
24 import android.util.ArraySet;
25 import android.util.SparseArray;
26 
27 import com.android.internal.util.ArrayUtils;
28 
29 import java.util.ArrayList;
30 import java.util.List;
31 import java.util.Map;
32 
33 /**
34  * Service class that runs inside the system_server process to handle queries to
35  * {@link com.android.server.SystemConfig}.
36  * @hide
37  */
38 public class SystemConfigService extends SystemService {
39     private final Context mContext;
40 
41     private final ISystemConfig.Stub mInterface = new ISystemConfig.Stub() {
42         @Override
43         public List<String> getDisabledUntilUsedPreinstalledCarrierApps() {
44             mContext.enforceCallingOrSelfPermission(Manifest.permission.READ_CARRIER_APP_INFO,
45                     "getDisabledUntilUsedPreInstalledCarrierApps requires READ_CARRIER_APP_INFO");
46             return new ArrayList<>(
47                     SystemConfig.getInstance().getDisabledUntilUsedPreinstalledCarrierApps());
48         }
49 
50         @Override
51         public Map getDisabledUntilUsedPreinstalledCarrierAssociatedApps() {
52             mContext.enforceCallingOrSelfPermission(Manifest.permission.READ_CARRIER_APP_INFO,
53                     "getDisabledUntilUsedPreInstalledCarrierAssociatedApps requires"
54                             + " READ_CARRIER_APP_INFO");
55             return SystemConfig.getInstance()
56                     .getDisabledUntilUsedPreinstalledCarrierAssociatedApps().entrySet().stream()
57                     .collect(toMap(
58                             Map.Entry::getKey,
59                             e -> e.getValue().stream().map(app -> app.packageName)
60                                     .collect(toList())));
61         }
62 
63         @Override
64         public Map getDisabledUntilUsedPreinstalledCarrierAssociatedAppEntries() {
65             mContext.enforceCallingOrSelfPermission(Manifest.permission.READ_CARRIER_APP_INFO,
66                     "getDisabledUntilUsedPreInstalledCarrierAssociatedAppEntries requires"
67                             + " READ_CARRIER_APP_INFO");
68             return SystemConfig.getInstance()
69                     .getDisabledUntilUsedPreinstalledCarrierAssociatedApps();
70         }
71 
72         @Override
73         public int[] getSystemPermissionUids(String permissionName) {
74             mContext.enforceCallingOrSelfPermission(Manifest.permission.GET_RUNTIME_PERMISSIONS,
75                     "getSystemPermissionUids requires GET_RUNTIME_PERMISSIONS");
76             final List<Integer> uids = new ArrayList<>();
77             final SparseArray<ArraySet<String>> systemPermissions =
78                     SystemConfig.getInstance().getSystemPermissions();
79             for (int i = 0; i < systemPermissions.size(); i++) {
80                 final ArraySet<String> permissions = systemPermissions.valueAt(i);
81                 if (permissions != null && permissions.contains(permissionName)) {
82                     uids.add(systemPermissions.keyAt(i));
83                 }
84             }
85             return ArrayUtils.convertToIntArray(uids);
86         }
87     };
88 
SystemConfigService(Context context)89     public SystemConfigService(Context context) {
90         super(context);
91         mContext = context;
92     }
93 
94     @Override
onStart()95     public void onStart() {
96         publishBinderService(Context.SYSTEM_CONFIG_SERVICE, mInterface);
97     }
98 }
99