1 /*
2  * Copyright (C) 2018 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
5  * except in compliance with the License. You may obtain a copy of the License at
6  *
7  *      http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software distributed under the
10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
11  * KIND, either express or implied. See the License for the specific language governing
12  * permissions and limitations under the License.
13  */
14 
15 package com.android.settings.datausage;
16 
17 import android.content.Context;
18 import android.net.INetworkStatsService;
19 import android.net.NetworkPolicy;
20 import android.net.NetworkPolicyManager;
21 import android.os.Bundle;
22 import android.os.INetworkManagementService;
23 import android.os.RemoteException;
24 import android.os.ServiceManager;
25 import android.os.UserManager;
26 import android.telephony.SubscriptionManager;
27 import android.telephony.TelephonyManager;
28 import android.util.Log;
29 
30 import com.android.settings.dashboard.DashboardFragment;
31 import com.android.settingslib.NetworkPolicyEditor;
32 
33 public abstract class DataUsageBaseFragment extends DashboardFragment {
34     private static final String TAG = "DataUsageBase";
35     private static final String ETHERNET = "ethernet";
36 
37     protected final TemplatePreference.NetworkServices services =
38             new TemplatePreference.NetworkServices();
39 
40     @Override
onCreate(Bundle icicle)41     public void onCreate(Bundle icicle) {
42         super.onCreate(icicle);
43         Context context = getContext();
44 
45         services.mNetworkService = INetworkManagementService.Stub.asInterface(
46                 ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE));
47         services.mStatsService = INetworkStatsService.Stub.asInterface(
48                 ServiceManager.getService(Context.NETWORK_STATS_SERVICE));
49         services.mPolicyManager = (NetworkPolicyManager) context
50                 .getSystemService(Context.NETWORK_POLICY_SERVICE);
51 
52         services.mPolicyEditor = new NetworkPolicyEditor(services.mPolicyManager);
53 
54         services.mTelephonyManager = context.getSystemService(TelephonyManager.class);
55         services.mSubscriptionManager = SubscriptionManager.from(context);
56         services.mUserManager = UserManager.get(context);
57     }
58 
59     @Override
onResume()60     public void onResume() {
61         super.onResume();
62         services.mPolicyEditor.read();
63     }
64 
isAdmin()65     protected boolean isAdmin() {
66         return services.mUserManager.isAdminUser();
67     }
68 
isMobileDataAvailable(int subId)69     protected boolean isMobileDataAvailable(int subId) {
70         return services.mSubscriptionManager.getActiveSubscriptionInfo(subId) != null;
71     }
72 
isNetworkPolicyModifiable(NetworkPolicy policy, int subId)73     protected boolean isNetworkPolicyModifiable(NetworkPolicy policy, int subId) {
74         return policy != null && isBandwidthControlEnabled() && services.mUserManager.isAdminUser()
75                 && isDataEnabled(subId);
76     }
77 
isDataEnabled(int subId)78     private boolean isDataEnabled(int subId) {
79         if (subId == SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
80             return true;
81         }
82         return services.mTelephonyManager.getDataEnabled(subId);
83     }
84 
isBandwidthControlEnabled()85     protected boolean isBandwidthControlEnabled() {
86         try {
87             return services.mNetworkService.isBandwidthControlEnabled();
88         } catch (RemoteException e) {
89             Log.w(TAG, "problem talking with INetworkManagementService: ", e);
90             return false;
91         }
92     }
93 }
94