iplookup/lib.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * IP Lookup utility functions
  20  *
  21  * @package    core
  22  * @subpackage iplookup
  23  * @copyright  2010 Petr Skoda {@link http://skodak.org}
  24  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25  */
  26
  27 defined('MOODLE_INTERNAL') || die();
  28
  29 /**
  30  * Returns location information
  31  * @param string $ip
  32  * @return array
  33  */
  34 function iplookup_find_location($ip) {
  35     global $CFG;
  36
  37     $info = array('city'=>null, 'country'=>null, 'longitude'=>null, 'latitude'=>null, 'error'=>null, 'note'=>'',  'title'=>array());
  38
  39     if (!empty($CFG->geoipfile) and file_exists($CFG->geoipfile)) {
  40         require_once('Net/GeoIP.php');
  41
  42         $geoip = Net_GeoIP::getInstance($CFG->geoipfile, Net_GeoIP::STANDARD);
  43         $location = $geoip->lookupLocation($ip);
  44         $geoip->close();
  45
  46         if (empty($location)) {
  47             $info['error'] = get_string('iplookupfailed', 'error', $ip);
  48             return $info;
  49         }
  50         if (!empty($location->city)) {
  51             $info['city'] = core_text::convert($location->city, 'iso-8859-1', 'utf-8');
  52             $info['title'][] = $info['city'];
  53         }
  54
  55         if (!empty($location->countryCode)) {
  56             $countries = get_string_manager()->get_list_of_countries(true);
  57             if (isset($countries[$location->countryCode])) {
  58                 // prefer our localized country names
  59                 $info['country'] = $countries[$location->countryCode];
  60             } else {
  61                 $info['country'] = $location->countryName;
  62             }
  63             $info['title'][] = $info['country'];
  64
  65         } else if (!empty($location->countryName)) {
  66             $info['country'] = $location->countryName;
  67             $info['title'][] = $info['country'];
  68         }
  69
  70         $info['longitude'] = $location->longitude;
  71         $info['latitude']  = $location->latitude;
  72         $info['note'] = get_string('iplookupmaxmindnote', 'admin');
  73
  74         return $info;
  75
  76     } else {
  77         require_once($CFG->libdir.'/filelib.php');
  78
  79         $ipdata = download_file_content('http://www.geoplugin.net/json.gp?ip='.$ip);
  80         if ($ipdata) {
  81             $ipdata = preg_replace('/^geoPlugin\((.*)\)\s*$/s', '$1', $ipdata);
  82             $ipdata = json_decode($ipdata, true);
  83         }
  84         if (!is_array($ipdata)) {
  85             $info['error'] = get_string('cannotgeoplugin', 'error');
  86             return $info;
  87         }
  88         $info['latitude']  = (float)$ipdata['geoplugin_latitude'];
  89         $info['longitude'] = (float)$ipdata['geoplugin_longitude'];
  90         $info['city']      = s($ipdata['geoplugin_city']);
  91
  92         $countrycode = $ipdata['geoplugin_countryCode'];
  93         $countries = get_string_manager()->get_list_of_countries(true);
  94         if (isset($countries[$countrycode])) {
  95             // prefer our localized country names
  96             $info['country'] = $countries[$countrycode];
  97         } else {
  98             $info['country'] = s($ipdata['geoplugin_countryName']);
  99         }
 100
 101         $info['note'] = get_string('iplookupgeoplugin', 'admin');
 102
 103         $info['title'][] = $info['city'];
 104         $info['title'][] = $info['country'];
 105
 106         return $info;
 107     }
 108
 109 }