library/Zend/Validate/Ip.php

   1 <?php
   2 /**
   3  * Zend Framework
   4  *
   5  * LICENSE
   6  *
   7  * This source file is subject to the new BSD license that is bundled
   8  * with this package in the file LICENSE.txt.
   9  * It is also available through the world-wide-web at this URL:
  10  * http://framework.zend.com/license/new-bsd
  11  * If you did not receive a copy of the license and are unable to
  12  * obtain it through the world-wide-web, please send an email
  13  * to license@zend.com so we can send you a copy immediately.
  14  *
  15  * @category   Zend
  16  * @package    Zend_Validate
  17  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  18  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  19  * @version    $Id$
  20  */
  21
  22 /**
  23  * @see Zend_Validate_Abstract
  24  */
  25 require_once 'Zend/Validate/Abstract.php';
  26
  27 /**
  28  * @category   Zend
  29  * @package    Zend_Validate
  30  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  31  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  32  */
  33 class Zend_Validate_Ip extends Zend_Validate_Abstract
  34 {
  35     const INVALID        = 'ipInvalid';
  36     const NOT_IP_ADDRESS = 'notIpAddress';
  37
  38     /**
  39      * @var array
  40      */
  41     protected $_messageTemplates = array(
  42         self::INVALID        => "Invalid type given, value should be a string",
  43         self::NOT_IP_ADDRESS => "'%value%' does not appear to be a valid IP address"
  44     );
  45
  46     /**
  47      * Defined by Zend_Validate_Interface
  48      *
  49      * Returns true if and only if $value is a valid IP address
  50      *
  51      * @param  mixed $value
  52      * @return boolean
  53      */
  54     public function isValid($value)
  55     {
  56         if (!is_string($value)) {
  57             $this->_error(self::INVALID);
  58             return false;
  59         }
  60
  61         $this->_setValue($value);
  62
  63         if ((ip2long($value) === false) || (long2ip(ip2long($value)) !== $value)) {
  64             if (!function_exists('inet_pton')) {
  65                 $this->_error();
  66                 return false;
  67             } else if ((@inet_pton($value) === false) ||(inet_ntop(@inet_pton($value)) !== $value)) {
  68                 $this->_error();
  69                 return false;
  70             }
  71         }
  72
  73         return true;
  74     }
  75
  76 }