<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * * An open source application development framework for PHP 5.2.4 or newer * * NOTICE OF LICENSE * * Licensed under the Open Software License version 3.0 * * This source file is subject to the Open Software License (OSL 3.0) that is * bundled with this package in the files license.txt / license.rst. It is * also available through the world wide web at this URL: * http://opensource.org/licenses/OSL-3.0 * If you did not receive a copy of the license and are unable to obtain it * through the world wide web, please send an email to * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter * @author EllisLab Dev Team * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 1.0 * @filesource */ /** * CodeIgniter Security Helpers * * @package CodeIgniter * @subpackage Helpers * @category Helpers * @author EllisLab Dev Team * @link http://codeigniter.com/user_guide/helpers/security_helper.html */ // ------------------------------------------------------------------------ /** * XSS Filtering * * @param string * @param bool whether or not the content is an image file * @return string */ if ( ! function_exists('xss_clean')) { function xss_clean($str, $is_image = FALSE) { $CI =& get_instance(); return $CI->security->xss_clean($str, $is_image); } } // ------------------------------------------------------------------------ /** * Sanitize Filename * * @param string * @return string */ if ( ! function_exists('sanitize_filename')) { function sanitize_filename($filename) { $CI =& get_instance(); return $CI->security->sanitize_filename($filename); } } // -------------------------------------------------------------------- /** * Hash encode a string * * @param string * @return string */ if ( ! function_exists('do_hash')) { function do_hash($str, $type = 'sha1') { if ( ! in_array(strtolower($type), hash_algos())) { $type = 'md5'; } return hash($type, $str); } } // ------------------------------------------------------------------------ /** * Strip Image Tags * * @param string * @return string */ if ( ! function_exists('strip_image_tags')) { function strip_image_tags($str) { return preg_replace(array('#<img\s+.*?src\s*=\s*["\'](.+?)["\'].*?\>#', '#<img\s+.*?src\s*=\s*(.+?).*?\>#'), '\\1', $str); } } // ------------------------------------------------------------------------ /** * Convert PHP tags to entities * * @param string * @return string */ if ( ! function_exists('encode_php_tags')) { function encode_php_tags($str) { return str_replace(array('<?php', '<?PHP', '<?', '?>'), array('<?php', '<?PHP', '<?', '?>'), $str); } } /* End of file security_helper.php */ /* Location: ./system/helpers/security_helper.php */