<?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 */
|
