Current Path : C:/xampp/htdocs/moodle/lib/classes/antivirus/ |
Current File : C:/xampp/htdocs/moodle/lib/classes/antivirus/manager.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/>. /** * Manager class for antivirus integration. * * @package core_antivirus * @copyright 2015 Ruslan Kabalin, Lancaster University. * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ namespace core\antivirus; defined('MOODLE_INTERNAL') || die(); /** * Class used for various antivirus related stuff. * * @package core_antivirus * @copyright 2015 Ruslan Kabalin, Lancaster University. * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class manager { /** * Returns list of enabled antiviruses. * * @return array Array ('antivirusname'=>stdClass antivirus object). */ private static function get_enabled() { global $CFG; $active = array(); if (empty($CFG->antiviruses)) { return $active; } foreach (explode(',', $CFG->antiviruses) as $e) { if ($antivirus = self::get_antivirus($e)) { if ($antivirus->is_configured()) { $active[$e] = $antivirus; } } } return $active; } /** * Scan file using all enabled antiviruses, throws exception in case of infected file. * * @param string $file Full path to the file. * @param string $filename Name of the file (could be different from physical file if temp file is used). * @param bool $deleteinfected whether infected file needs to be deleted. * @throws \core\antivirus\scanner_exception If file is infected. * @return void */ public static function scan_file($file, $filename, $deleteinfected) { $antiviruses = self::get_enabled(); foreach ($antiviruses as $antivirus) { $result = $antivirus->scan_file($file, $filename); if ($result === $antivirus::SCAN_RESULT_FOUND) { // Infection found. if ($deleteinfected) { unlink($file); } throw new \core\antivirus\scanner_exception('virusfound', '', array('item' => $filename)); } } } /** * Scan data steam using all enabled antiviruses, throws exception in case of infected data. * * @param string $data The varaible containing the data to scan. * @throws \core\antivirus\scanner_exception If data is infected. * @return void */ public static function scan_data($data) { $antiviruses = self::get_enabled(); foreach ($antiviruses as $antivirus) { $result = $antivirus->scan_data($data); if ($result === $antivirus::SCAN_RESULT_FOUND) { throw new \core\antivirus\scanner_exception('virusfound', '', array('item' => get_string('datastream', 'antivirus'))); } } } /** * Returns instance of antivirus. * * @param string $antivirusname name of antivirus. * @return object|bool antivirus instance or false if does not exist. */ public static function get_antivirus($antivirusname) { global $CFG; $classname = '\\antivirus_' . $antivirusname . '\\scanner'; if (!class_exists($classname)) { return false; } return new $classname(); } /** * Get the list of available antiviruses. * * @return array Array ('antivirusname'=>'localised antivirus name'). */ public static function get_available() { $antiviruses = array(); foreach (\core_component::get_plugin_list('antivirus') as $antivirusname => $dir) { $antiviruses[$antivirusname] = get_string('pluginname', 'antivirus_'.$antivirusname); } return $antiviruses; } }