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   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 [email protected] so we can send you a copy immediately.
  14   *
  15   * @category   Zend
  16   * @package    Zend_Validate
  17   * @copyright  Copyright (c) 2005-2010 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) 2005-2010 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       * internal options
  48       *
  49       * @var array
  50       */
  51      protected $_options = array(
  52          'allowipv6' => true,
  53          'allowipv4' => true
  54      );
  55  
  56      /**
  57       * Sets validator options
  58       *
  59       * @param array $options OPTIONAL Options to set, see the manual for all available options
  60       * @return void
  61       */
  62      public function __construct($options = array())
  63      {
  64          if ($options instanceof Zend_Config) {
  65              $options = $options->toArray();
  66          } else if (!is_array($options)) {
  67              $options = func_get_args();
  68              $temp['allowipv6'] = array_shift($options);
  69              if (!empty($options)) {
  70                  $temp['allowipv4'] = array_shift($options);
  71              }
  72  
  73              $options = $temp;
  74          }
  75  
  76          $options += $this->_options;
  77          $this->setOptions($options);
  78      }
  79  
  80      /**
  81       * Returns all set options
  82       *
  83       * @return array
  84       */
  85      public function getOptions()
  86      {
  87          return $this->_options;
  88      }
  89  
  90      /**
  91       * Sets the options for this validator
  92       *
  93       * @param array $options
  94       * @return Zend_Validate_Ip
  95       */
  96      public function setOptions($options)
  97      {
  98          if (array_key_exists('allowipv6', $options)) {
  99              $this->_options['allowipv6'] = (boolean) $options['allowipv6'];
 100          }
 101  
 102          if (array_key_exists('allowipv4', $options)) {
 103              $this->_options['allowipv4'] = (boolean) $options['allowipv4'];
 104          }
 105  
 106          if (!$this->_options['allowipv4'] && !$this->_options['allowipv6']) {
 107              require_once 'Zend/Validate/Exception.php';
 108              throw new Zend_Validate_Exception('Nothing to validate. Check your options');
 109          }
 110  
 111          return $this;
 112      }
 113  
 114      /**
 115       * Defined by Zend_Validate_Interface
 116       *
 117       * Returns true if and only if $value is a valid IP address
 118       *
 119       * @param  mixed $value
 120       * @return boolean
 121       */
 122      public function isValid($value)
 123      {
 124          if (!is_string($value)) {
 125              $this->_error(self::INVALID);
 126              return false;
 127          }
 128  
 129          $this->_setValue($value);
 130          if (($this->_options['allowipv4'] && !$this->_options['allowipv6'] && !$this->_validateIPv4($value)) ||
 131              (!$this->_options['allowipv4'] && $this->_options['allowipv6'] && !$this->_validateIPv6($value)) ||
 132              ($this->_options['allowipv4'] && $this->_options['allowipv6'] && !$this->_validateIPv4($value) && !$this->_validateIPv6($value))) {
 133              $this->_error(self::NOT_IP_ADDRESS);
 134              return false;
 135          }
 136  
 137          return true;
 138      }
 139  
 140      /**
 141       * Validates an IPv4 address
 142       *
 143       * @param string $value
 144       */
 145      protected function _validateIPv4($value) {
 146          $ip2long = ip2long($value);
 147          if($ip2long === false) {
 148              return false;
 149          }
 150  
 151          return $value == long2ip($ip2long);
 152      }
 153  
 154      /**
 155       * Validates an IPv6 address
 156       *
 157       * @param  string $value Value to check against
 158       * @return boolean True when $value is a valid ipv6 address
 159       *                 False otherwise
 160       */
 161      protected function _validateIPv6($value) {
 162          if (strlen($value) < 3) {
 163              return $value == '::';
 164          }
 165  
 166          if (strpos($value, '.')) {
 167              $lastcolon = strrpos($value, ':');
 168              if (!($lastcolon && $this->_validateIPv4(substr($value, $lastcolon + 1)))) {
 169                  return false;
 170              }
 171  
 172              $value = substr($value, 0, $lastcolon) . ':0:0';
 173          }
 174  
 175          if (strpos($value, '::') === false) {
 176              return preg_match('/\A(?:[a-f0-9]{1,4}:){7}[a-f0-9]{1,4}\z/i', $value);
 177          }
 178  
 179          $colonCount = substr_count($value, ':');
 180          if ($colonCount < 8) {
 181              return preg_match('/\A(?::|(?:[a-f0-9]{1,4}:)+):(?:(?:[a-f0-9]{1,4}:)*[a-f0-9]{1,4})?\z/i', $value);
 182          }
 183  
 184          // special case with ending or starting double colon
 185          if ($colonCount == 8) {
 186              return preg_match('/\A(?:::)?(?:[a-f0-9]{1,4}:){6}[a-f0-9]{1,4}(?:::)?\z/i', $value);
 187          }
 188  
 189          return false;
 190      }
 191  }