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Viewing changes to codeigniter/system/helpers/security_helper.php

  • Committer: gustav.hartvigsson at gmail
  • Date: 2013-04-03 11:52:56 UTC
  • Revision ID: gustav.hartvigsson@gmail.com-20130403115256-sz6zermzoom4lifc
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codeigniter/system/helpers/security_helper.php
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<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
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/**
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 * CodeIgniter
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 *
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 * An open source application development framework for PHP 5.1.6 or newer
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 *
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 * @package             CodeIgniter
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 * @author              ExpressionEngine Dev Team
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 * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc.
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 * @license             http://codeigniter.com/user_guide/license.html
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 * @link                http://codeigniter.com
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 * @since               Version 1.0
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 * @filesource
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 */
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// ------------------------------------------------------------------------
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/**
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 * CodeIgniter Security Helpers
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 *
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 * @package             CodeIgniter
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 * @subpackage  Helpers
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 * @category    Helpers
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 * @author              ExpressionEngine Dev Team
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 * @link                http://codeigniter.com/user_guide/helpers/security_helper.html
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 */
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// ------------------------------------------------------------------------
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/**
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 * XSS Filtering
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 *
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 * @access      public
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 * @param       string
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 * @param       bool    whether or not the content is an image file
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 * @return      string
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 */
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if ( ! function_exists('xss_clean'))
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{
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        function xss_clean($str, $is_image = FALSE)
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        {
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                $CI =& get_instance();
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                return $CI->security->xss_clean($str, $is_image);
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        }
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}
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// ------------------------------------------------------------------------
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/**
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 * Sanitize Filename
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 *
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 * @access      public
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 * @param       string
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 * @return      string
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 */
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if ( ! function_exists('sanitize_filename'))
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{
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        function sanitize_filename($filename)
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        {
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                $CI =& get_instance();
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                return $CI->security->sanitize_filename($filename);
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        }
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}
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// --------------------------------------------------------------------
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/**
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 * Hash encode a string
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 *
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 * @access      public
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 * @param       string
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 * @return      string
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 */
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if ( ! function_exists('do_hash'))
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{
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        function do_hash($str, $type = 'sha1')
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        {
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                if ($type == 'sha1')
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                {
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                        return sha1($str);
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                }
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                else
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                {
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                        return md5($str);
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                }
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        }
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}
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// ------------------------------------------------------------------------
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/**
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 * Strip Image Tags
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 *
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 * @access      public
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 * @param       string
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 * @return      string
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 */
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if ( ! function_exists('strip_image_tags'))
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{
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        function strip_image_tags($str)
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        {
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                $str = preg_replace("#<img\s+.*?src\s*=\s*[\"'](.+?)[\"'].*?\>#", "\\1", $str);
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                $str = preg_replace("#<img\s+.*?src\s*=\s*(.+?).*?\>#", "\\1", $str);
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                return $str;
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        }
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}
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// ------------------------------------------------------------------------
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/**
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 * Convert PHP tags to entities
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 *
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 * @access      public
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 * @param       string
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 * @return      string
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 */
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if ( ! function_exists('encode_php_tags'))
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{
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        function encode_php_tags($str)
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        {
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                return str_replace(array('<?php', '<?PHP', '<?', '?>'),  array('&lt;?php', '&lt;?PHP', '&lt;?', '?&gt;'), $str);
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        }
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}
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/* End of file security_helper.php */
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/* Location: ./system/helpers/security_helper.php */
 
 
b'\\ No newline at end of file'