weekly release 2.3dev
[moodle.git] / iplookup / lib.php
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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
27defined('MOODLE_INTERNAL') || die();
28
29/**
30 * Returns location information
31 * @param string $ip
32 * @return array
33 */
34function iplookup_find_location($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
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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)) {
f8311def 51 $info['city'] = textlib::convert($location->city, 'iso-8859-1', 'utf-8');
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52 $info['title'][] = $info['city'];
53 }
54
55 if (!empty($location->country_code)) {
56 $countries = get_string_manager()->get_list_of_countries(true);
57 if (isset($countries[$location->country_code])) {
58 // prefer our localized country names
59 $info['country'] = $countries[$location->country_code];
60 } else {
61 $info['country'] = $location->country_name;
62 }
63 $info['title'][] = $info['country'];
64 }
65 $info['longitude'] = $location->longitude;
66 $info['latitude'] = $location->latitude;
67 $info['note'] = get_string('iplookupmaxmindnote', 'admin');
68
69 return $info;
70
71 } else {
72 require_once($CFG->libdir.'/filelib.php');
73
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74 $ipdata = download_file_content('http://www.geoplugin.net/json.gp?ip='.$ip);
75 if ($ipdata) {
76 $ipdata = preg_replace('/^geoPlugin\((.*)\)\s*$/s', '$1', $ipdata);
77 $ipdata = json_decode($ipdata, true);
b9ee1fc7 78 }
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79 if (!is_array($ipdata)) {
80 $info['error'] = get_string('cannotgeoplugin', 'error');
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81 return $info;
82 }
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83 $info['latitude'] = (float)$ipdata['geoplugin_latitude'];
84 $info['longitude'] = (float)$ipdata['geoplugin_longitude'];
85 $info['city'] = s($ipdata['geoplugin_city']);
86
87 $countrycode = $ipdata['geoplugin_countryCode'];
88 $countries = get_string_manager()->get_list_of_countries(true);
89 if (isset($countries[$countrycode])) {
90 // prefer our localized country names
91 $info['country'] = $countries[$countrycode];
92 } else {
93 $info['country'] = s($ipdata['geoplugin_countryName']);
b9ee1fc7 94 }
b9ee1fc7 95
8c6136a8 96 $info['note'] = get_string('iplookupgeoplugin', 'admin');
b9ee1fc7 97
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98 $info['title'][] = $info['country'];
99 $info['title'][] = $info['city'];
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100
101 return $info;
102 }
103
8c6136a8 104}