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.ComponentName;
23 import android.content.Context;
24 import android.os.ISystemConfig;
25 import android.util.ArrayMap;
26 import android.util.ArraySet;
27 import android.util.SparseArray;
28 
29 import com.android.internal.util.ArrayUtils;
30 
31 import java.util.ArrayList;
32 import java.util.List;
33 import java.util.Map;
34 
35 /**
36  * Service class that runs inside the system_server process to handle queries to
37  * {@link com.android.server.SystemConfig}.
38  * @hide
39  */
40 public class SystemConfigService extends SystemService {
41     private final Context mContext;
42 
43     private final ISystemConfig.Stub mInterface = new ISystemConfig.Stub() {
44         @Override
45         public List<String> getDisabledUntilUsedPreinstalledCarrierApps() {
46             mContext.enforceCallingOrSelfPermission(Manifest.permission.READ_CARRIER_APP_INFO,
47                     "getDisabledUntilUsedPreInstalledCarrierApps requires READ_CARRIER_APP_INFO");
48             return new ArrayList<>(
49                     SystemConfig.getInstance().getDisabledUntilUsedPreinstalledCarrierApps());
50         }
51 
52         @Override
53         public Map getDisabledUntilUsedPreinstalledCarrierAssociatedApps() {
54             mContext.enforceCallingOrSelfPermission(Manifest.permission.READ_CARRIER_APP_INFO,
55                     "getDisabledUntilUsedPreInstalledCarrierAssociatedApps requires"
56                             + " READ_CARRIER_APP_INFO");
57             return SystemConfig.getInstance()
58                     .getDisabledUntilUsedPreinstalledCarrierAssociatedApps().entrySet().stream()
59                     .collect(toMap(
60                             Map.Entry::getKey,
61                             e -> e.getValue().stream().map(app -> app.packageName)
62                                     .collect(toList())));
63         }
64 
65         @Override
66         public Map getDisabledUntilUsedPreinstalledCarrierAssociatedAppEntries() {
67             mContext.enforceCallingOrSelfPermission(Manifest.permission.READ_CARRIER_APP_INFO,
68                     "getDisabledUntilUsedPreInstalledCarrierAssociatedAppEntries requires"
69                             + " READ_CARRIER_APP_INFO");
70             return SystemConfig.getInstance()
71                     .getDisabledUntilUsedPreinstalledCarrierAssociatedApps();
72         }
73 
74         @Override
75         public int[] getSystemPermissionUids(String permissionName) {
76             mContext.enforceCallingOrSelfPermission(Manifest.permission.GET_RUNTIME_PERMISSIONS,
77                     "getSystemPermissionUids requires GET_RUNTIME_PERMISSIONS");
78             final List<Integer> uids = new ArrayList<>();
79             final SparseArray<ArraySet<String>> systemPermissions =
80                     SystemConfig.getInstance().getSystemPermissions();
81             for (int i = 0; i < systemPermissions.size(); i++) {
82                 final ArraySet<String> permissions = systemPermissions.valueAt(i);
83                 if (permissions != null && permissions.contains(permissionName)) {
84                     uids.add(systemPermissions.keyAt(i));
85                 }
86             }
87             return ArrayUtils.convertToIntArray(uids);
88         }
89 
90         @Override
91         public List<ComponentName> getEnabledComponentOverrides(String packageName) {
92             ArrayMap<String, Boolean> systemComponents = SystemConfig.getInstance()
93                     .getComponentsEnabledStates(packageName);
94             List<ComponentName> enabledComponent = new ArrayList<>();
95             if (systemComponents != null) {
96                 for (Map.Entry<String, Boolean> entry : systemComponents.entrySet()) {
97                     if (Boolean.TRUE.equals(entry.getValue())) {
98                         enabledComponent.add(new ComponentName(packageName, entry.getKey()));
99                     }
100                 }
101             }
102             return enabledComponent;
103         }
104 
105         @Override
106         public List<ComponentName> getDefaultVrComponents() {
107             getContext().enforceCallingOrSelfPermission(Manifest.permission.QUERY_ALL_PACKAGES,
108                     "Caller must hold " + Manifest.permission.QUERY_ALL_PACKAGES);
109             return new ArrayList<>(SystemConfig.getInstance().getDefaultVrComponents());
110         }
111     };
112 
SystemConfigService(Context context)113     public SystemConfigService(Context context) {
114         super(context);
115         mContext = context;
116     }
117 
118     @Override
onStart()119     public void onStart() {
120         publishBinderService(Context.SYSTEM_CONFIG_SERVICE, mInterface);
121     }
122 }
123