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 android.net;
18 
19 import android.annotation.Nullable;
20 import android.annotation.SystemApi;
21 import android.annotation.SystemService;
22 import android.annotation.TestApi;
23 import android.content.Context;
24 import android.os.RemoteException;
25 import android.os.ServiceManager;
26 import android.util.Log;
27 
28 import com.android.internal.net.INetworkWatchlistManager;
29 import com.android.internal.util.Preconditions;
30 
31 /**
32  * Class that manage network watchlist in system.
33  * @hide
34  */
35 @TestApi
36 @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
37 @SystemService(Context.NETWORK_WATCHLIST_SERVICE)
38 public class NetworkWatchlistManager {
39 
40     private static final String TAG = "NetworkWatchlistManager";
41     private static final String SHARED_MEMORY_TAG = "NETWORK_WATCHLIST_SHARED_MEMORY";
42 
43     private final Context mContext;
44     private final INetworkWatchlistManager mNetworkWatchlistManager;
45 
46     /**
47      * @hide
48      */
NetworkWatchlistManager(Context context, INetworkWatchlistManager manager)49     public NetworkWatchlistManager(Context context, INetworkWatchlistManager manager) {
50         mContext = context;
51         mNetworkWatchlistManager = manager;
52     }
53 
54     /**
55      * @hide
56      */
NetworkWatchlistManager(Context context)57     public NetworkWatchlistManager(Context context) {
58         mContext = Preconditions.checkNotNull(context, "missing context");
59         mNetworkWatchlistManager = (INetworkWatchlistManager)
60                 INetworkWatchlistManager.Stub.asInterface(
61                         ServiceManager.getService(Context.NETWORK_WATCHLIST_SERVICE));
62     }
63 
64     /**
65      * Report network watchlist records if necessary.
66      *
67      * Watchlist report process will summarize records into a single report, then the
68      * report will be processed by differential privacy framework and stored on disk.
69      *
70      * @hide
71      */
reportWatchlistIfNecessary()72     public void reportWatchlistIfNecessary() {
73         try {
74             mNetworkWatchlistManager.reportWatchlistIfNecessary();
75         } catch (RemoteException e) {
76             Log.e(TAG, "Cannot report records", e);
77             e.rethrowFromSystemServer();
78         }
79     }
80 
81     /**
82      * Reload network watchlist.
83      *
84      * @hide
85      */
reloadWatchlist()86     public void reloadWatchlist() {
87         try {
88             mNetworkWatchlistManager.reloadWatchlist();
89         } catch (RemoteException e) {
90             Log.e(TAG, "Unable to reload watchlist");
91             e.rethrowFromSystemServer();
92         }
93     }
94 
95     /**
96      * Get Network Watchlist config file hash.
97      */
98     @Nullable
getWatchlistConfigHash()99     public byte[] getWatchlistConfigHash() {
100         try {
101             return mNetworkWatchlistManager.getWatchlistConfigHash();
102         } catch (RemoteException e) {
103             Log.e(TAG, "Unable to get watchlist config hash");
104             throw e.rethrowFromSystemServer();
105         }
106     }
107 }
108