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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/>.
/**
* Contains helper class for digital consent.
*
* @package core_auth
* @copyright 2018 Mihail Geshoski <mihail@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace core_auth;
defined('MOODLE_INTERNAL') || die();
/**
* Helper class for digital consent.
*
* @copyright 2018 Mihail Geshoski <mihail@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class digital_consent {
/**
* Returns true if age and location verification is enabled in the site.
*
* @return bool
*/
public static function is_age_digital_consent_verification_enabled() {
global $CFG;
return !empty($CFG->agedigitalconsentverification);
}
/**
* Checks if a user is a digital minor.
*
* @param int $age
* @param string $country The country code (ISO 3166-2)
* @return bool
*/
public static function is_minor($age, $country) {
global $CFG;
$ageconsentmap = $CFG->agedigitalconsentmap;
$agedigitalconsentmap = self::parse_age_digital_consent_map($ageconsentmap);
return array_key_exists($country, $agedigitalconsentmap) ?
$age < $agedigitalconsentmap[$country] : $age < $agedigitalconsentmap['*'];
}
/**
* Parse the agedigitalconsentmap setting into an array.
*
* @param string $ageconsentmap The value of the agedigitalconsentmap setting
* @return array $ageconsentmapparsed
*/
public static function parse_age_digital_consent_map($ageconsentmap) {
$ageconsentmapparsed = array();
$countries = get_string_manager()->get_list_of_countries(true);
$isdefaultvaluepresent = false;
$lines = preg_split('/\r|\n/', $ageconsentmap, -1, PREG_SPLIT_NO_EMPTY);
foreach ($lines as $line) {
$arr = explode(",", $line);
// Handle if there is more or less than one comma separator.
if (count($arr) != 2) {
throw new \moodle_exception('agedigitalconsentmapinvalidcomma', 'error', '', $line);
}
$country = trim($arr[0]);
$age = trim($arr[1]);
// Check if default.
if ($country == "*") {
$isdefaultvaluepresent = true;
}
// Handle if the presented value for country is not valid.
if ($country !== "*" && !array_key_exists($country, $countries)) {
throw new \moodle_exception('agedigitalconsentmapinvalidcountry', 'error', '', $country);
}
// Handle if the presented value for age is not valid.
if (!is_numeric($age)) {
throw new \moodle_exception('agedigitalconsentmapinvalidage', 'error', '', $age);
}
$ageconsentmapparsed[$country] = $age;
}
// Handle if a default value does not exist.
if (!$isdefaultvaluepresent) {
throw new \moodle_exception('agedigitalconsentmapinvaliddefault');
}
return $ageconsentmapparsed;
}
}