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MDL-23720 improved iplookup coding style + fixed a potential privacy issue

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Petr Skoda 2010-08-09 16:10:02 +00:00
parent 2265bbc25c
commit b9ee1fc748
2 changed files with 145 additions and 92 deletions
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118
iplookup/lib.php Normal file
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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->geoipfile) and file_exists($CFG->geoipfile)) {
require_once('Net/GeoIP.php');
$textlib = textlib_get_instance();
$geoip = Net_GeoIP::getInstance($CFG->geoipfile, Net_GeoIP::STANDARD);
$location = $geoip->lookupLocation($ip);
$geoip->close();
if (empty($location)) {
$info['error'] = get_string('iplookupfailed', 'error', $ip);
return $info;
}
if (!empty($location->city)) {
$info['city'] = $textlib->convert($location->city, 'iso-8859-1', 'utf-8');
$info['title'][] = $info['city'];
}
if (!empty($location->country_code)) {
$countries = get_string_manager()->get_list_of_countries(true);
if (isset($countries[$location->country_code])) {
// prefer our localized country names
$info['country'] = $countries[$location->country_code];
} else {
$info['country'] = $location->country_name;
}
$info['title'][] = $info['country'];
}
$info['longitude'] = $location->longitude;
$info['latitude'] = $location->latitude;
$info['note'] = get_string('iplookupmaxmindnote', 'admin');
return $info;
} else {
require_once($CFG->libdir.'/filelib.php');
$ipdata = download_file_content('http://netgeo.caida.org/perl/netgeo.cgi?target='.$ip);
if ($ipdata === false) {
$info['error'] = get_string('cannotnetgeo', 'error');
return $info;
}
$matches = null;
if (!preg_match('/LAT:\s*(-?\d+\.\d+)/s', $ipdata, $matches)) {
$info['error'] = get_string('iplookupfailed', 'error', $ip);
return $info;
}
$info['latitude'] = (float)$matches[1];
if (!preg_match('/LONG:\s*(-?\d+\.\d+)/s', $ipdata, $matches)) {
$info['error'] = get_string('iplookupfailed', 'error', $ip);
return $info;
}
$info['longitude'] = (float)$matches[1];
if (preg_match('/CITY:\s*([^<]*)/', $ipdata, $matches)) {
if (!empty($matches[1])) {
$info['city'] = s($matches[1]);
$info['title'][] = $info['city'];
}
}
if (preg_match('/COUNTRY:\s*([^<]*)/', $ipdata, $matches)) {
if (!empty($matches[1])) {
$countrycode = $matches[1];
$countries = get_string_manager()->get_list_of_countries(true);
if (isset($countries[$countrycode])) {
// prefer our localized country names
$info['country'] = $countries[$countrycode];
} else {
$info['country'] = $countrycode;
}
$info['title'][] = $info['country'];
}
}
$info['note'] = get_string('iplookupnetgeonote', 'admin');
return $info;
}
}