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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 package com.android.settings.applications;
     17 
     18 import static android.net.NetworkPolicyManager.POLICY_NONE;
     19 import static android.net.NetworkPolicyManager.POLICY_REJECT_METERED_BACKGROUND;
     20 
     21 import android.app.ActivityManager;
     22 import android.app.AlertDialog;
     23 import android.app.AppOpsManager;
     24 import android.app.INotificationManager;
     25 import android.content.Context;
     26 import android.content.DialogInterface;
     27 import android.content.pm.ApplicationInfo;
     28 import android.content.pm.IPackageManager;
     29 import android.content.pm.PackageManager;
     30 import android.net.NetworkPolicyManager;
     31 import android.os.AsyncTask;
     32 import android.os.Bundle;
     33 import android.os.RemoteException;
     34 import android.os.ServiceManager;
     35 import android.os.UserHandle;
     36 import android.webkit.IWebViewUpdateService;
     37 
     38 import com.android.settings.R;
     39 
     40 import java.util.List;
     41 
     42 public class ResetAppsHelper implements DialogInterface.OnClickListener,
     43         DialogInterface.OnDismissListener {
     44 
     45     private static final String EXTRA_RESET_DIALOG = "resetDialog";
     46 
     47     private final PackageManager mPm;
     48     private final IPackageManager mIPm;
     49     private final INotificationManager mNm;
     50     private final IWebViewUpdateService mWvus;
     51     private final NetworkPolicyManager mNpm;
     52     private final AppOpsManager mAom;
     53     private final Context mContext;
     54 
     55     private AlertDialog mResetDialog;
     56 
     57     public ResetAppsHelper(Context context) {
     58         mContext = context;
     59         mPm = context.getPackageManager();
     60         mIPm = IPackageManager.Stub.asInterface(ServiceManager.getService("package"));
     61         mNm = INotificationManager.Stub.asInterface(
     62                 ServiceManager.getService(Context.NOTIFICATION_SERVICE));
     63         mWvus = IWebViewUpdateService.Stub.asInterface(ServiceManager.getService("webviewupdate"));
     64         mNpm = NetworkPolicyManager.from(context);
     65         mAom = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
     66     }
     67 
     68     public void onRestoreInstanceState(Bundle savedInstanceState) {
     69         if (savedInstanceState != null && savedInstanceState.getBoolean(EXTRA_RESET_DIALOG)) {
     70             buildResetDialog();
     71         }
     72     }
     73 
     74     public void onSaveInstanceState(Bundle outState) {
     75         if (mResetDialog != null) {
     76             outState.putBoolean(EXTRA_RESET_DIALOG, true);
     77         }
     78     }
     79 
     80     public void stop() {
     81         if (mResetDialog != null) {
     82             mResetDialog.dismiss();
     83             mResetDialog = null;
     84         }
     85     }
     86 
     87     void buildResetDialog() {
     88         if (mResetDialog == null) {
     89             mResetDialog = new AlertDialog.Builder(mContext)
     90                     .setTitle(R.string.reset_app_preferences_title)
     91                     .setMessage(R.string.reset_app_preferences_desc)
     92                     .setPositiveButton(R.string.reset_app_preferences_button, this)
     93                     .setNegativeButton(R.string.cancel, null)
     94                     .setOnDismissListener(this)
     95                     .show();
     96         }
     97     }
     98 
     99     @Override
    100     public void onDismiss(DialogInterface dialog) {
    101         if (mResetDialog == dialog) {
    102             mResetDialog = null;
    103         }
    104     }
    105 
    106     @Override
    107     public void onClick(DialogInterface dialog, int which) {
    108         if (mResetDialog != dialog) {
    109             return;
    110         }
    111         AsyncTask.execute(new Runnable() {
    112             @Override
    113             public void run() {
    114                 List<ApplicationInfo> apps = mPm.getInstalledApplications(
    115                         PackageManager.GET_DISABLED_COMPONENTS);
    116                 for (int i = 0; i < apps.size(); i++) {
    117                     ApplicationInfo app = apps.get(i);
    118                     try {
    119                         mNm.setNotificationsEnabledForPackage(app.packageName, app.uid, true);
    120                     } catch (android.os.RemoteException ex) {
    121                     }
    122                     if (!app.enabled) {
    123                         if (mPm.getApplicationEnabledSetting(app.packageName)
    124                                 == PackageManager.COMPONENT_ENABLED_STATE_DISABLED_USER
    125                                 && !isNonEnableableFallback(app.packageName)) {
    126                             mPm.setApplicationEnabledSetting(app.packageName,
    127                                     PackageManager.COMPONENT_ENABLED_STATE_DEFAULT,
    128                                     PackageManager.DONT_KILL_APP);
    129                         }
    130                     }
    131                 }
    132                 try {
    133                     mIPm.resetApplicationPreferences(UserHandle.myUserId());
    134                 } catch (RemoteException e) {
    135                 }
    136                 mAom.resetAllModes();
    137                 final int[] restrictedUids = mNpm.getUidsWithPolicy(
    138                         POLICY_REJECT_METERED_BACKGROUND);
    139                 final int currentUserId = ActivityManager.getCurrentUser();
    140                 for (int uid : restrictedUids) {
    141                     // Only reset for current user
    142                     if (UserHandle.getUserId(uid) == currentUserId) {
    143                         mNpm.setUidPolicy(uid, POLICY_NONE);
    144                     }
    145                 }
    146             }
    147         });
    148     }
    149 
    150     private boolean isNonEnableableFallback(String packageName) {
    151         try {
    152             return mWvus.isFallbackPackage(packageName);
    153         } catch (RemoteException e) {
    154             throw new RuntimeException(e);
    155         }
    156     }
    157 }
    158