138 lines
3.6 KiB
PHP
138 lines
3.6 KiB
PHP
<?php
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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
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*
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* This content is released under the MIT License (MIT)
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*
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* Copyright (c) 2014 - 2019, British Columbia Institute of Technology
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @package CodeIgniter
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* @author EllisLab Dev Team
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* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
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* @license https://opensource.org/licenses/MIT MIT License
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* @link https://codeigniter.com
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* @since Version 1.0.0
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* @filesource
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*/
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defined('BASEPATH') OR exit('No direct script access allowed');
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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 EllisLab Dev Team
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* @link https://codeigniter.com/user_guide/helpers/security_helper.html
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*/
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// ------------------------------------------------------------------------
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if ( ! function_exists('xss_clean'))
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{
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/**
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* XSS Filtering
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*
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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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function xss_clean($str, $is_image = FALSE)
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{
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return get_instance()->security->xss_clean($str, $is_image);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('sanitize_filename'))
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{
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/**
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* Sanitize Filename
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*
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* @param string
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* @return string
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*/
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function sanitize_filename($filename)
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{
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return get_instance()->security->sanitize_filename($filename);
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}
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}
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// --------------------------------------------------------------------
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if ( ! function_exists('do_hash'))
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{
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/**
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* Hash encode a string
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*
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* @todo Remove in version 3.1+.
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* @deprecated 3.0.0 Use PHP's native hash() instead.
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* @param string $str
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* @param string $type = 'sha1'
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* @return string
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*/
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function do_hash($str, $type = 'sha1')
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{
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if ( ! in_array(strtolower($type), hash_algos()))
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{
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$type = 'md5';
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}
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return hash($type, $str);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('strip_image_tags'))
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{
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/**
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* Strip Image Tags
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*
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* @param string
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* @return string
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*/
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function strip_image_tags($str)
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{
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return get_instance()->security->strip_image_tags($str);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('encode_php_tags'))
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{
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/**
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* Convert PHP tags to entities
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*
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* @param string
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* @return string
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*/
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function encode_php_tags($str)
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{
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return str_replace(array('<?', '?>'), array('<?', '?>'), $str);
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}
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}
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