| Derek Allard | d2df9bc | 2007-04-15 17:41:17 +0000 | [diff] [blame] | 1 | <?php if (!defined('BASEPATH')) exit('No direct script access allowed');
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| 2 | /**
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| 3 | * CodeIgniter
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| 4 | *
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| 5 | * An open source application development framework for PHP 4.3.2 or newer
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| 6 | *
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| 7 | * @package CodeIgniter
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| 8 | * @author Rick Ellis
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| 9 | * @copyright Copyright (c) 2006, EllisLab, Inc.
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| 10 | * @license http://www.codeignitor.com/user_guide/license.html
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| 11 | * @link http://www.codeigniter.com
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| 12 | * @since Version 1.0
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| 13 | * @filesource
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| 14 | */
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| 15 |
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| 16 | // ------------------------------------------------------------------------
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| 17 |
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| 18 | /**
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| 19 | * CodeIgniter Security Helpers
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| 20 | *
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| 21 | * @package CodeIgniter
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| 22 | * @subpackage Helpers
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| 23 | * @category Helpers
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| 24 | * @author Rick Ellis
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| 25 | * @link http://www.codeigniter.com/user_guide/helpers/security_helper.html
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| 26 | */
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| 27 |
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| 28 | // ------------------------------------------------------------------------
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| 29 |
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| 30 | /**
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| 31 | * XSS Filtering
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| 32 | *
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| 33 | * @access public
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| 34 | * @param string
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| 35 | * @param string the character set of your data
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| 36 | * @return string
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| 37 | */
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| 38 | function xss_clean($str, $charset = 'ISO-8859-1')
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| 39 | {
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| 40 | $CI =& get_instance();
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| 41 | return $CI->input->xss_clean($str, $charset);
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| 42 | }
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| 43 |
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| 44 | // --------------------------------------------------------------------
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| 45 |
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| 46 | /**
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| 47 | * Hash encode a string
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| 48 | *
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| 49 | * @access public
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| 50 | * @param string
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| 51 | * @return string
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| 52 | */
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| 53 | function dohash($str, $type = 'sha1')
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| 54 | {
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| 55 | if ($type == 'sha1')
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| 56 | {
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| 57 | if ( ! function_exists('sha1'))
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| 58 | {
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| 59 | if ( ! function_exists('mhash'))
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| 60 | {
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| 61 | require_once(BASEPATH.'libraries/Sha1'.EXT);
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| 62 | $SH = new CI_SHA;
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| 63 | return $SH->generate($str);
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| 64 | }
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| 65 | else
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| 66 | {
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| 67 | return bin2hex(mhash(MHASH_SHA1, $str));
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| 68 | }
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| 69 | }
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| 70 | else
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| 71 | {
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| 72 | return sha1($str);
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| 73 | }
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| 74 | }
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| 75 | else
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| 76 | {
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| 77 | return md5($str);
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| 78 | }
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| 79 | }
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| 80 |
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| 81 | // ------------------------------------------------------------------------
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| 82 |
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| 83 | /**
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| 84 | * Strip Image Tags
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| 85 | *
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| 86 | * @access public
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| 87 | * @param string
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| 88 | * @return string
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| 89 | */
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| 90 | function strip_image_tags($str)
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| 91 | {
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| 92 | $str = preg_replace("#<img\s+.*?src\s*=\s*[\"'](.+?)[\"'].*?\>#", "\\1", $str);
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| 93 | $str = preg_replace("#<img\s+.*?src\s*=\s*(.+?).*?\>#", "\\1", $str);
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| 94 |
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| 95 | return $str;
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| 96 | }
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| 97 |
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| 98 | // ------------------------------------------------------------------------
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| 99 |
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| 100 | /**
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| 101 | * Convert PHP tags to entities
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| 102 | *
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| 103 | * @access public
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| 104 | * @param string
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| 105 | * @return string
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| 106 | */
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| 107 | function encode_php_tags($str)
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| 108 | {
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| 109 | return str_replace(array('<?php', '<?PHP', '<?', '?>'), array('<?php', '<?PHP', '<?', '?>'), $str);
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| 110 | }
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| 111 |
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| admin | b0dd10f | 2006-08-25 17:25:49 +0000 | [diff] [blame] | 112 | ?> |