lib/htmlpurifier/HTMLPurifier/AttrDef/URI/IPv4.php

   1 <?php
   2
   3 require_once 'HTMLPurifier/AttrDef.php';
   4
   5 /**
   6  * Validates an IPv4 address
   7  * @author Feyd @ forums.devnetwork.net (public domain)
   8  */
   9 class HTMLPurifier_AttrDef_URI_IPv4 extends HTMLPurifier_AttrDef
  10 {
  11
  12     /**
  13      * IPv4 regex, protected so that IPv6 can reuse it
  14      * @protected
  15      */
  16     var $ip4;
  17
  18     function HTMLPurifier_AttrDef_URI_IPv4() {
  19         $oct = '(?:25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])'; // 0-255
  20         $this->ip4 = "(?:{$oct}\\.{$oct}\\.{$oct}\\.{$oct})";
  21     }
  22
  23     function validate($aIP, $config, &$context) {
  24
  25         if (preg_match('#^' . $this->ip4 . '$#s', $aIP))
  26         {
  27                 return $aIP;
  28         }
  29
  30         return false;
  31
  32     }
  33
  34 }
  35
  36 ?>