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      1 /*
      2  * Copyright (C) 2015 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 com.android.settings;
     18 
     19 import android.bluetooth.BluetoothAdapter;
     20 import android.bluetooth.BluetoothManager;
     21 import android.content.ContentResolver;
     22 import android.content.Context;
     23 import android.net.ConnectivityManager;
     24 import android.net.NetworkPolicyManager;
     25 import android.net.Uri;
     26 import android.net.wifi.WifiManager;
     27 import android.os.Bundle;
     28 import android.os.UserHandle;
     29 import android.os.UserManager;
     30 import android.telephony.SubscriptionManager;
     31 import android.telephony.TelephonyManager;
     32 import android.view.LayoutInflater;
     33 import android.view.View;
     34 import android.view.ViewGroup;
     35 import android.widget.Button;
     36 import android.widget.Toast;
     37 
     38 import com.android.ims.ImsManager;
     39 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     40 import com.android.internal.telephony.PhoneConstants;
     41 import com.android.settingslib.RestrictedLockUtils;
     42 
     43 import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
     44 
     45 /**
     46  * Confirm and execute a reset of the network settings to a clean "just out of the box"
     47  * state.  Multiple confirmations are required: first, a general "are you sure
     48  * you want to do this?" prompt, followed by a keyguard pattern trace if the user
     49  * has defined one, followed by a final strongly-worded "THIS WILL RESET EVERYTHING"
     50  * prompt.  If at any time the phone is allowed to go to sleep, is
     51  * locked, et cetera, then the confirmation sequence is abandoned.
     52  *
     53  * This is the confirmation screen.
     54  */
     55 public class ResetNetworkConfirm extends OptionsMenuFragment {
     56 
     57     private View mContentView;
     58     private int mSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID;
     59 
     60     /**
     61      * The user has gone through the multiple confirmation, so now we go ahead
     62      * and reset the network settings to its factory-default state.
     63      */
     64     private Button.OnClickListener mFinalClickListener = new Button.OnClickListener() {
     65 
     66         @Override
     67         public void onClick(View v) {
     68             if (Utils.isMonkeyRunning()) {
     69                 return;
     70             }
     71             // TODO maybe show a progress dialog if this ends up taking a while
     72             Context context = getActivity();
     73 
     74             ConnectivityManager connectivityManager = (ConnectivityManager)
     75                     context.getSystemService(Context.CONNECTIVITY_SERVICE);
     76             if (connectivityManager != null) {
     77                 connectivityManager.factoryReset();
     78             }
     79 
     80             WifiManager wifiManager = (WifiManager)
     81                     context.getSystemService(Context.WIFI_SERVICE);
     82             if (wifiManager != null) {
     83                 wifiManager.factoryReset();
     84             }
     85 
     86             TelephonyManager telephonyManager = (TelephonyManager)
     87                     context.getSystemService(Context.TELEPHONY_SERVICE);
     88             if (telephonyManager != null) {
     89                 telephonyManager.factoryReset(mSubId);
     90             }
     91 
     92             NetworkPolicyManager policyManager = (NetworkPolicyManager)
     93                     context.getSystemService(Context.NETWORK_POLICY_SERVICE);
     94             if (policyManager != null) {
     95                 String subscriberId = telephonyManager.getSubscriberId(mSubId);
     96                 policyManager.factoryReset(subscriberId);
     97             }
     98 
     99             BluetoothManager btManager = (BluetoothManager)
    100                     context.getSystemService(Context.BLUETOOTH_SERVICE);
    101             if (btManager != null) {
    102                 BluetoothAdapter btAdapter = btManager.getAdapter();
    103                 if (btAdapter != null) {
    104                     btAdapter.factoryReset();
    105                 }
    106             }
    107 
    108             ImsManager.factoryReset(context);
    109             restoreDefaultApn(context);
    110 
    111             Toast.makeText(context, R.string.reset_network_complete_toast, Toast.LENGTH_SHORT)
    112                     .show();
    113         }
    114     };
    115 
    116     /**
    117      * Restore APN settings to default.
    118      */
    119     private void restoreDefaultApn(Context context) {
    120         Uri uri = Uri.parse(ApnSettings.RESTORE_CARRIERS_URI);
    121 
    122         if (SubscriptionManager.isUsableSubIdValue(mSubId)) {
    123             uri = Uri.withAppendedPath(uri, "subId/" + String.valueOf(mSubId));
    124         }
    125 
    126         ContentResolver resolver = context.getContentResolver();
    127         resolver.delete(uri, null, null);
    128     }
    129 
    130     /**
    131      * Configure the UI for the final confirmation interaction
    132      */
    133     private void establishFinalConfirmationState() {
    134         mContentView.findViewById(R.id.execute_reset_network)
    135                 .setOnClickListener(mFinalClickListener);
    136     }
    137 
    138     @Override
    139     public View onCreateView(LayoutInflater inflater, ViewGroup container,
    140             Bundle savedInstanceState) {
    141         final EnforcedAdmin admin = RestrictedLockUtils.checkIfRestrictionEnforced(
    142                 getActivity(), UserManager.DISALLOW_NETWORK_RESET, UserHandle.myUserId());
    143         if (RestrictedLockUtils.hasBaseUserRestriction(getActivity(),
    144                 UserManager.DISALLOW_NETWORK_RESET, UserHandle.myUserId())) {
    145             return inflater.inflate(R.layout.network_reset_disallowed_screen, null);
    146         } else if (admin != null) {
    147             View view = inflater.inflate(R.layout.admin_support_details_empty_view, null);
    148             ShowAdminSupportDetailsDialog.setAdminSupportDetails(getActivity(), view, admin, false);
    149             view.setVisibility(View.VISIBLE);
    150             return view;
    151         }
    152         mContentView = inflater.inflate(R.layout.reset_network_confirm, null);
    153         establishFinalConfirmationState();
    154         return mContentView;
    155     }
    156 
    157     @Override
    158     public void onCreate(Bundle savedInstanceState) {
    159         super.onCreate(savedInstanceState);
    160 
    161         Bundle args = getArguments();
    162         if (args != null) {
    163             mSubId = args.getInt(PhoneConstants.SUBSCRIPTION_KEY,
    164                     SubscriptionManager.INVALID_SUBSCRIPTION_ID);
    165         }
    166     }
    167 
    168     @Override
    169     public int getMetricsCategory() {
    170         return MetricsEvent.RESET_NETWORK_CONFIRM;
    171     }
    172 }
    173