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) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
18 * @license    http://framework.zend.com/license/new-bsd     New BSD License
19 * @version    $Id: Ip.php 13289 2008-12-15 23:18:58Z tjohns $
20 */
21
22/**
23 * @see Zend_Validate_Abstract
24 */
25require_once 'Zend/Validate/Abstract.php';
26
27/**
28 * @category   Zend
29 * @package    Zend_Validate
30 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
31 * @license    http://framework.zend.com/license/new-bsd     New BSD License
32 */
33class Zend_Validate_Ip extends Zend_Validate_Abstract
34{
35    const NOT_IP_ADDRESS = 'notIpAddress';
36
37    /**
38     * @var array
39     */
40    protected $_messageTemplates = array(
41        self::NOT_IP_ADDRESS => "'%value%' does not appear to be a valid IP address"
42    );
43
44    /**
45     * Defined by Zend_Validate_Interface
46     *
47     * Returns true if and only if $value is a valid IP address
48     *
49     * @param  mixed $value
50     * @return boolean
51     */
52    public function isValid($value)
53    {
54        $valueString = (string) $value;
55
56        $this->_setValue($valueString);
57
58        if ((ip2long($valueString) === false) || (long2ip(ip2long($valueString)) !== $valueString)) {
59            if (!function_exists('inet_pton')) {
60                $this->_error();
61                return false;
62            } else if ((@inet_pton($value) === false) ||(inet_ntop(@inet_pton($value)) !== $valueString)) {
63                $this->_error();
64                return false;
65            }
66        }
67
68        return true;
69    }
70
71}
72