freenetis-github/application/helpers/security.php @ 2a205303
| 8baed187 | Michal Kliment | <?php defined('SYSPATH') or die('No direct script access.');
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/**
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* Security helper class.
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*
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* $Id: security.php 1725 2008-01-17 16:38:59Z PugFish $
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*
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* @package Core
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* @author Kohana Team
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* @copyright (c) 2007-2008 Kohana Team
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* @license http://kohanaphp.com/license.html
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*/
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class security {
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/**
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* Sanitize a string with the xss_clean method.
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*
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* @param string string to sanitize
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* @return string
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*/
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public static function xss_clean($str)
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{
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static $input;
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if ($input === NULL)
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{
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$input = new Input();
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}
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return $input->xss_clean($str);
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}
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/**
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* Remove image tags from a string.
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*
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* @param string string to sanitize
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* @return string
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*/
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public static function strip_image_tags($str)
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{
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$str = preg_replace('#<img\b.*?(?:src\s*=\s*["\']?([^"\'<>\s]*)["\']?[^>]*)?>#is', '$1', $str);
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return trim($str);
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}
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/**
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* Remove PHP tags from a string.
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*
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* @param string string to sanitize
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* @return string
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*/
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public static 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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* @author Michal Kliment
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* Generate security password from capital and small letters and numbers
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* @param $char_count
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* @return password
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*/
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public static function generate_password($char_count = 8)
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{
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$password = '';
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for ($i = 1; $i <= $char_count; $i++)
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{
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$rand = mt_rand(0, 2);
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if ($rand == 0)
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{
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// capital letters
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$password .= chr(mt_rand(65, 90));
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}
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elseif ($rand == 1)
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{
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// small letters
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$password .= chr(mt_rand(97, 122));
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}
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else
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{
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// numbers
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$password .= chr(mt_rand(48, 57));
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}
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}
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return $password;
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}
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/**
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* @author Michal Kliment
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* Generate security password from numbers
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* @param $char_count
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* @return password
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*/
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public static function generate_numeric_password($char_count = 8)
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{
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$password = '';
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for ($i = 1; $i <= $char_count; $i++)
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{
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$password .= chr(mt_rand(48, 57));
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}
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return $password;
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}
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} // End security
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