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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* IP Lookup utility functions
*
* @package core
* @subpackage iplookup
* @copyright 2010 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* Returns location information
* @param string $ip
* @return array
*/
function iplookup_find_location($ip) {
global $CFG;
$info = array('city'=>null, 'country'=>null, 'longitude'=>null, 'latitude'=>null, 'error'=>null, 'note'=>'', 'title'=>array());
if (!empty($CFG->geoip2file) and file_exists($CFG->geoip2file)) {
$reader = new GeoIp2\Database\Reader($CFG->geoip2file);
$record = $reader->city($ip);
if (empty($record)) {
$info['error'] = get_string('iplookupfailed', 'error', $ip);
return $info;
}
$info['city'] = core_text::convert($record->city->name, 'iso-8859-1', 'utf-8');
$info['title'][] = $info['city'];
$countrycode = $record->country->isoCode;
$countries = get_string_manager()->get_list_of_countries(true);
if (isset($countries[$countrycode])) {
// Prefer our localized country names.
$info['country'] = $countries[$countrycode];
} else {
$info['country'] = $record->country->names['en'];
}
$info['title'][] = $info['country'];
$info['longitude'] = $record->location->longitude;
$info['latitude'] = $record->location->latitude;
$info['note'] = get_string('iplookupmaxmindnote', 'admin');
return $info;
} else {
require_once($CFG->libdir.'/filelib.php');
if (strpos($ip, ':') !== false) {
// IPv6 is not supported by geoplugin.net.
$info['error'] = get_string('invalidipformat', 'error');
return $info;
}
$ipdata = download_file_content('http://www.geoplugin.net/json.gp?ip='.$ip);
if ($ipdata) {
$ipdata = preg_replace('/^geoPlugin\((.*)\)\s*$/s', '$1', $ipdata);
$ipdata = json_decode($ipdata, true);
}
if (!is_array($ipdata)) {
$info['error'] = get_string('cannotgeoplugin', 'error');
return $info;
}
$info['latitude'] = (float)$ipdata['geoplugin_latitude'];
$info['longitude'] = (float)$ipdata['geoplugin_longitude'];
$info['city'] = s($ipdata['geoplugin_city']);
$countrycode = $ipdata['geoplugin_countryCode'];
$countries = get_string_manager()->get_list_of_countries(true);
if (isset($countries[$countrycode])) {
// prefer our localized country names
$info['country'] = $countries[$countrycode];
} else {
$info['country'] = s($ipdata['geoplugin_countryName']);
}
$info['note'] = get_string('iplookupgeoplugin', 'admin');
$info['title'][] = $info['city'];
$info['title'][] = $info['country'];
return $info;
}
}