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 static android.net.ConnectivityManager.TYPE_ETHERNET; 18 19 import android.content.Context; 20 import android.net.ConnectivityManager; 21 import android.net.INetworkStatsService; 22 import android.net.INetworkStatsSession; 23 import android.net.NetworkPolicy; 24 import android.net.NetworkPolicyManager; 25 import android.net.NetworkTemplate; 26 import android.net.TrafficStats; 27 import android.os.Bundle; 28 import android.os.INetworkManagementService; 29 import android.os.RemoteException; 30 import android.os.ServiceManager; 31 import android.os.SystemProperties; 32 import android.os.UserManager; 33 import android.telephony.SubscriptionManager; 34 import android.telephony.TelephonyManager; 35 import android.util.Log; 36 37 import com.android.settings.SettingsPreferenceFragment; 38 import com.android.settings.dashboard.DashboardFragment; 39 import com.android.settingslib.NetworkPolicyEditor; 40 41 public abstract class DataUsageBaseFragment extends DashboardFragment { 42 private static final String TAG = "DataUsageBase"; 43 private static final String ETHERNET = "ethernet"; 44 45 protected final TemplatePreference.NetworkServices services = 46 new TemplatePreference.NetworkServices(); 47 48 @Override onCreate(Bundle icicle)49 public void onCreate(Bundle icicle) { 50 super.onCreate(icicle); 51 Context context = getContext(); 52 53 services.mNetworkService = INetworkManagementService.Stub.asInterface( 54 ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE)); 55 services.mStatsService = INetworkStatsService.Stub.asInterface( 56 ServiceManager.getService(Context.NETWORK_STATS_SERVICE)); 57 services.mPolicyManager = (NetworkPolicyManager)context 58 .getSystemService(Context.NETWORK_POLICY_SERVICE); 59 60 services.mPolicyEditor = new NetworkPolicyEditor(services.mPolicyManager); 61 62 services.mTelephonyManager = TelephonyManager.from(context); 63 services.mSubscriptionManager = SubscriptionManager.from(context); 64 services.mUserManager = UserManager.get(context); 65 } 66 67 @Override onResume()68 public void onResume() { 69 super.onResume(); 70 services.mPolicyEditor.read(); 71 } 72 isAdmin()73 protected boolean isAdmin() { 74 return services.mUserManager.isAdminUser(); 75 } 76 isMobileDataAvailable(int subId)77 protected boolean isMobileDataAvailable(int subId) { 78 return services.mSubscriptionManager.getActiveSubscriptionInfo(subId) != null; 79 } 80 isNetworkPolicyModifiable(NetworkPolicy policy, int subId)81 protected boolean isNetworkPolicyModifiable(NetworkPolicy policy, int subId) { 82 return policy != null && isBandwidthControlEnabled() && services.mUserManager.isAdminUser() 83 && isDataEnabled(subId); 84 } 85 isDataEnabled(int subId)86 private boolean isDataEnabled(int subId) { 87 if (subId == SubscriptionManager.INVALID_SUBSCRIPTION_ID) { 88 return true; 89 } 90 return services.mTelephonyManager.getDataEnabled(subId); 91 } 92 isBandwidthControlEnabled()93 protected boolean isBandwidthControlEnabled() { 94 try { 95 return services.mNetworkService.isBandwidthControlEnabled(); 96 } catch (RemoteException e) { 97 Log.w(TAG, "problem talking with INetworkManagementService: ", e); 98 return false; 99 } 100 } 101 102 /** 103 * Test if device has an ethernet network connection. 104 * TODO(b/77590489): Remove this method when DataUsageSummaryLegacy is deprecated. 105 */ hasEthernet(Context context)106 public boolean hasEthernet(Context context) { 107 if (DataUsageUtils.TEST_RADIOS) { 108 return SystemProperties.get(DataUsageUtils.TEST_RADIOS_PROP).contains(ETHERNET); 109 } 110 111 final ConnectivityManager conn = ConnectivityManager.from(context); 112 final boolean hasEthernet = conn.isNetworkSupported(TYPE_ETHERNET); 113 114 final long ethernetBytes; 115 try { 116 INetworkStatsSession statsSession = services.mStatsService.openSession(); 117 if (statsSession != null) { 118 ethernetBytes = statsSession.getSummaryForNetwork( 119 NetworkTemplate.buildTemplateEthernet(), Long.MIN_VALUE, Long.MAX_VALUE) 120 .getTotalBytes(); 121 TrafficStats.closeQuietly(statsSession); 122 } else { 123 ethernetBytes = 0; 124 } 125 } catch (RemoteException e) { 126 throw new RuntimeException(e); 127 } 128 129 // only show ethernet when both hardware present and traffic has occurred 130 return hasEthernet && ethernetBytes > 0; 131 } 132 } 133