| Derek Allard | 2067d1a | 2008-11-13 22:59:24 +0000 | [diff] [blame^] | 1 | <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); |
| 2 | /** |
| 3 | * CodeIgniter |
| 4 | * |
| 5 | * An open source application development framework for PHP 4.3.2 or newer |
| 6 | * |
| 7 | * @package CodeIgniter |
| 8 | * @author ExpressionEngine Dev Team |
| 9 | * @copyright Copyright (c) 2008, EllisLab, Inc. |
| 10 | * @license http://codeigniter.com/user_guide/license.html |
| 11 | * @link http://codeigniter.com |
| 12 | * @since Version 1.0 |
| 13 | * @filesource |
| 14 | */ |
| 15 | |
| 16 | // ------------------------------------------------------------------------ |
| 17 | |
| 18 | /** |
| 19 | * CodeIgniter Security Helpers |
| 20 | * |
| 21 | * @package CodeIgniter |
| 22 | * @subpackage Helpers |
| 23 | * @category Helpers |
| 24 | * @author ExpressionEngine Dev Team |
| 25 | * @link http://codeigniter.com/user_guide/helpers/security_helper.html |
| 26 | */ |
| 27 | |
| 28 | // ------------------------------------------------------------------------ |
| 29 | |
| 30 | /** |
| 31 | * XSS Filtering |
| 32 | * |
| 33 | * @access public |
| 34 | * @param string |
| 35 | * @param string the character set of your data |
| 36 | * @return string |
| 37 | */ |
| 38 | if ( ! function_exists('xss_clean')) |
| 39 | { |
| 40 | function xss_clean($str, $charset = 'ISO-8859-1') |
| 41 | { |
| 42 | $CI =& get_instance(); |
| 43 | return $CI->input->xss_clean($str, $charset); |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | // -------------------------------------------------------------------- |
| 48 | |
| 49 | /** |
| 50 | * Hash encode a string |
| 51 | * |
| 52 | * @access public |
| 53 | * @param string |
| 54 | * @return string |
| 55 | */ |
| 56 | if ( ! function_exists('dohash')) |
| 57 | { |
| 58 | function dohash($str, $type = 'sha1') |
| 59 | { |
| 60 | if ($type == 'sha1') |
| 61 | { |
| 62 | if ( ! function_exists('sha1')) |
| 63 | { |
| 64 | if ( ! function_exists('mhash')) |
| 65 | { |
| 66 | require_once(BASEPATH.'libraries/Sha1'.EXT); |
| 67 | $SH = new CI_SHA; |
| 68 | return $SH->generate($str); |
| 69 | } |
| 70 | else |
| 71 | { |
| 72 | return bin2hex(mhash(MHASH_SHA1, $str)); |
| 73 | } |
| 74 | } |
| 75 | else |
| 76 | { |
| 77 | return sha1($str); |
| 78 | } |
| 79 | } |
| 80 | else |
| 81 | { |
| 82 | return md5($str); |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | // ------------------------------------------------------------------------ |
| 88 | |
| 89 | /** |
| 90 | * Strip Image Tags |
| 91 | * |
| 92 | * @access public |
| 93 | * @param string |
| 94 | * @return string |
| 95 | */ |
| 96 | if ( ! function_exists('strip_image_tags')) |
| 97 | { |
| 98 | function strip_image_tags($str) |
| 99 | { |
| 100 | $str = preg_replace("#<img\s+.*?src\s*=\s*[\"'](.+?)[\"'].*?\>#", "\\1", $str); |
| 101 | $str = preg_replace("#<img\s+.*?src\s*=\s*(.+?).*?\>#", "\\1", $str); |
| 102 | |
| 103 | return $str; |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | // ------------------------------------------------------------------------ |
| 108 | |
| 109 | /** |
| 110 | * Convert PHP tags to entities |
| 111 | * |
| 112 | * @access public |
| 113 | * @param string |
| 114 | * @return string |
| 115 | */ |
| 116 | if ( ! function_exists('encode_php_tags')) |
| 117 | { |
| 118 | function encode_php_tags($str) |
| 119 | { |
| 120 | return str_replace(array('<?php', '<?PHP', '<?', '?>'), array('<?php', '<?PHP', '<?', '?>'), $str); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | |
| 125 | /* End of file security_helper.php */ |
| Derek Jones | a3ffbbb | 2008-05-11 18:18:29 +0000 | [diff] [blame] | 126 | /* Location: ./system/helpers/security_helper.php */ |