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      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 com.android.incallui.calllocation.impl;
     18 
     19 import android.content.ContentResolver;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.content.pm.PackageManager;
     23 import android.content.pm.ResolveInfo;
     24 import android.database.Cursor;
     25 import android.net.Uri;
     26 import android.provider.Settings.Secure;
     27 import android.provider.Settings.SettingNotFoundException;
     28 import com.android.dialer.common.LogUtil;
     29 
     30 /**
     31  * Helper class to check if Google Location Services is enabled. This class is based on
     32  * https://docs.google.com/a/google.com/document/d/1sGm8pHgGY1QmxbLCwTZuWQASEDN7CFW9EPSZXAuGQfo
     33  */
     34 public class GoogleLocationSettingHelper {
     35 
     36   /** User has disagreed to use location for Google services. */
     37   public static final int USE_LOCATION_FOR_SERVICES_OFF = 0;
     38   /** User has agreed to use location for Google services. */
     39   public static final int USE_LOCATION_FOR_SERVICES_ON = 1;
     40   /** The user has neither agreed nor disagreed to use location for Google services yet. */
     41   public static final int USE_LOCATION_FOR_SERVICES_NOT_SET = 2;
     42 
     43   private static final String GOOGLE_SETTINGS_AUTHORITY = "com.google.settings";
     44   private static final Uri GOOGLE_SETTINGS_CONTENT_URI =
     45       Uri.parse("content://" + GOOGLE_SETTINGS_AUTHORITY + "/partner");
     46   private static final String NAME = "name";
     47   private static final String VALUE = "value";
     48   private static final String USE_LOCATION_FOR_SERVICES = "use_location_for_services";
     49 
     50   /** Determine if Google apps need to conform to the USE_LOCATION_FOR_SERVICES setting. */
     51   public static boolean isEnforceable(Context context) {
     52     final ResolveInfo ri =
     53         context
     54             .getPackageManager()
     55             .resolveActivity(
     56                 new Intent("com.google.android.gsf.GOOGLE_APPS_LOCATION_SETTINGS"),
     57                 PackageManager.MATCH_DEFAULT_ONLY);
     58     return ri != null;
     59   }
     60 
     61   /**
     62    * Get the current value for the 'Use value for location' setting.
     63    *
     64    * @return One of {@link #USE_LOCATION_FOR_SERVICES_NOT_SET}, {@link
     65    *     #USE_LOCATION_FOR_SERVICES_OFF} or {@link #USE_LOCATION_FOR_SERVICES_ON}.
     66    */
     67   private static int getUseLocationForServices(Context context) {
     68     final ContentResolver resolver = context.getContentResolver();
     69     Cursor c = null;
     70     String stringValue = null;
     71     try {
     72       c =
     73           resolver.query(
     74               GOOGLE_SETTINGS_CONTENT_URI,
     75               new String[] {VALUE},
     76               NAME + "=?",
     77               new String[] {USE_LOCATION_FOR_SERVICES},
     78               null);
     79       if (c != null && c.moveToNext()) {
     80         stringValue = c.getString(0);
     81       }
     82     } catch (final RuntimeException e) {
     83       LogUtil.e(
     84           "GoogleLocationSettingHelper.getUseLocationForServices",
     85           "Failed to get 'Use My Location' setting",
     86           e);
     87     } finally {
     88       if (c != null) {
     89         c.close();
     90       }
     91     }
     92     if (stringValue == null) {
     93       return USE_LOCATION_FOR_SERVICES_NOT_SET;
     94     }
     95     int value;
     96     try {
     97       value = Integer.parseInt(stringValue);
     98     } catch (final NumberFormatException nfe) {
     99       value = USE_LOCATION_FOR_SERVICES_NOT_SET;
    100     }
    101     return value;
    102   }
    103 
    104   /** Whether or not the system location setting is enable */
    105   public static boolean isSystemLocationSettingEnabled(Context context) {
    106     try {
    107       return Secure.getInt(context.getContentResolver(), Secure.LOCATION_MODE)
    108           != Secure.LOCATION_MODE_OFF;
    109     } catch (SettingNotFoundException e) {
    110       LogUtil.e(
    111           "GoogleLocationSettingHelper.isSystemLocationSettingEnabled",
    112           "Failed to get System Location setting",
    113           e);
    114       return false;
    115     }
    116   }
    117 
    118   /** Convenience method that returns true is GLS is ON or if it's not enforceable. */
    119   public static boolean isGoogleLocationServicesEnabled(Context context) {
    120     return !isEnforceable(context)
    121         || getUseLocationForServices(context) == USE_LOCATION_FOR_SERVICES_ON;
    122   }
    123 }
    124