Current File : /opt/bitnami/apps/moodle/htdocs.backup/mod/quiz/accessrule/safebrowser/rule.php
<?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/>.
/**
* Implementaton of the quizaccess_safebrowser plugin.
*
* @package quizaccess
* @subpackage safebrowser
* @copyright 2011 The Open University
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->dirroot . '/mod/quiz/accessrule/accessrulebase.php');
/**
* A rule representing the safe browser check.
*
* @copyright 2009 Oliver Rahs
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class quizaccess_safebrowser extends quiz_access_rule_base {
public static function make(quiz $quizobj, $timenow, $canignoretimelimits) {
if ($quizobj->get_quiz()->browsersecurity !== 'safebrowser') {
return null;
}
return new self($quizobj, $timenow);
}
public function prevent_access() {
if (!$this->check_safe_browser()) {
return get_string('safebrowsererror', 'quizaccess_safebrowser');
} else {
return false;
}
}
public function description() {
return get_string('safebrowsernotice', 'quizaccess_safebrowser');
}
public function setup_attempt_page($page) {
$page->set_title($this->quizobj->get_course()->shortname . ': ' . $page->title);
$page->set_cacheable(false);
$page->set_popup_notification_allowed(false); // Prevent message notifications.
$page->set_heading($page->title);
$page->set_pagelayout('secure');
}
/**
* Checks if browser is safe browser
*
* @return true, if browser is safe browser else false
*/
public function check_safe_browser() {
return strpos($_SERVER['HTTP_USER_AGENT'], 'SEB') !== false;
}
/**
* @return array key => lang string any choices to add to the quiz Browser
* security settings menu.
*/
public static function get_browser_security_choices() {
global $CFG;
if (empty($CFG->enablesafebrowserintegration)) {
return array();
}
return array('safebrowser' =>
get_string('requiresafeexambrowser', 'quizaccess_safebrowser'));
}
}
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