jidaikobo-shibata/a11yc

<?php
/**
 * Kontiki\Maintenance
 *
 * @package    part of Kontiki
 * @author     Jidaikobo Inc.
 * @license    The MIT License (MIT)
 * @copyright  Jidaikobo Inc.
 * @link       http://www.jidaikobo.com
 */
namespace Kontiki;
class Maintenance
{
    /**
     * sqlite
     * Be care for directory traversal
     *
     * @param String $path
     * @param String $file
     * @param Bool $is_force
     * @return Void
     */
    public static function sqlite ($path, $file, $is_force = FALSE)
    {
        if (defined('A11YC_DB_TYPE') && A11YC_DB_TYPE == 'mysql') return;

        if ( ! file_exists($path.$file))
        {
            Util::error('sqlite file is missing.');
        }

        // prepare
        $backup_file = $path.'/backup.'.date('ymd', time()).'.sqlite';
        $path = $path.$file;

        // run backup once in a day
        if ( ! file_exists($backup_file) || $is_force)
        {
            // maintenance
            Db::forge(
                'maintenance',
                array(
                    'dbtype' => 'sqlite',
                    'path' => $path,
                ));

            $sql = 'BEGIN TRANSACTION;VACUUM;COMMIT;';
            Db::execute($sql, array(), 'maintenance');

            // copy
            if ( ! copy($path, $backup_file))
            {
                Session::add('messages', 'errors', 'Auto back up was failed.');
            }
            else
            {
                Session::add('messages', 'messages', 'Auto back up was succeed.');
            }

            // garbage collection
            self::garbageCollection($path);
        }
    }

    /**
     * garbageCollection
     *
     * @param String $path
     * @return Void
     */
    private static function garbageCollection ($path)
    {
        $path = dirname($path);
        foreach (glob($path.'/'.'*') as $file)
        {
            $file = basename($file);

            if (substr($file, 0, 7) == 'backup.')
            {
                if (filectime($path.'/'.$file) <= time() - 86400 * 10)
                {
                    unlink($path.'/'.$file);
                }
            }
        }
    }
}