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<?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 */
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