/system/helpers/security_helper.php
PHP | 128 lines | 47 code | 15 blank | 66 comment | 8 complexity | 3124a30890a64f09740dd2b148bd008d MD5 | raw file
- <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
- /**
- * CodeIgniter
- *
- * An open source application development framework for PHP 5.1.6 or newer
- *
- * @package CodeIgniter
- * @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
- * @license http://codeigniter.com/user_guide/license.html
- * @link http://codeigniter.com
- * @since Version 1.0
- * @filesource
- */
- // ------------------------------------------------------------------------
- /**
- * CodeIgniter Security Helpers
- *
- * @package CodeIgniter
- * @subpackage Helpers
- * @category Helpers
- * @author ExpressionEngine Dev Team
- * @link http://codeigniter.com/user_guide/helpers/security_helper.html
- */
- // ------------------------------------------------------------------------
- /**
- * XSS Filtering
- *
- * @access public
- * @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, $is_image);
- }
- }
- // ------------------------------------------------------------------------
- /**
- * Sanitize Filename
- *
- * @access public
- * @param string
- * @return string
- */
- if ( ! function_exists('sanitize_filename'))
- {
- function sanitize_filename($filename)
- {
- $CI =& get_instance();
- return $CI->security->sanitize_filename($filename);
- }
- }
- // --------------------------------------------------------------------
- /**
- * Hash encode a string
- *
- * @access public
- * @param string
- * @return string
- */
- if ( ! function_exists('do_hash'))
- {
- function do_hash($str, $type = 'sha1')
- {
- if ($type == 'sha1')
- {
- return sha1($str);
- }
- else
- {
- return md5($str);
- }
- }
- }
- // ------------------------------------------------------------------------
- /**
- * Strip Image Tags
- *
- * @access public
- * @param string
- * @return string
- */
- if ( ! function_exists('strip_image_tags'))
- {
- function strip_image_tags($str)
- {
- $str = preg_replace("#<img\s+.*?src\s*=\s*[\"'](.+?)[\"'].*?\>#", "\\1", $str);
- $str = preg_replace("#<img\s+.*?src\s*=\s*(.+?).*?\>#", "\\1", $str);
- return $str;
- }
- }
- // ------------------------------------------------------------------------
- /**
- * Convert PHP tags to entities
- *
- * @access public
- * @param string
- * @return string
- */
- if ( ! function_exists('encode_php_tags'))
- {
- function encode_php_tags($str)
- {
- return str_replace(array('<?php', '<?PHP', '<?', '?>'), array('<?php', '<?PHP', '<?', '?>'), $str);
- }
- }
- /* End of file security_helper.php */
- /* Location: ./system/helpers/security_helper.php */