[Sommaire] [Imprimer]

   1  <?php
   2  
   3  /*
   4   * This file is part of the symfony package.
   5   * (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
   6   * (c) 2004-2006 Sean Kerr.
   7   * 
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  /**
  13   * sfEmailValidator verifies a parameter contains a value that qualifies as an
  14   * email address.
  15   *
  16   * @package    symfony
  17   * @subpackage validator
  18   * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
  19   * @author     Sean Kerr <skerr@mojavi.org>
  20   * @version    SVN: $Id: sfEmailValidator.class.php 3233 2007-01-11 21:01:08Z fabien $
  21   */
  22  class sfEmailValidator extends sfValidator
  23  {
  24    /**
  25     * Executes this validator.
  26     *
  27     * @param mixed A file or parameter value/array
  28     * @param error An error message reference
  29     *
  30     * @return bool true, if this validator executes successfully, otherwise false
  31     */
  32    public function execute(&$value, &$error)
  33    {
  34      $strict = $this->getParameterHolder()->get('strict');
  35      if ($strict == true)
  36      {
  37        $re = '/^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i';
  38      }
  39      else
  40      {
  41        /* Cal Henderson: http://iamcal.com/publish/articles/php/parsing_email/pdf/
  42         * The long regular expression below is made by the following code
  43         * fragment:
  44         *
  45         *   $qtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]';
  46         *   $dtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]';
  47         *   $atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c'
  48         *         . '\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+';
  49         *   $quoted_pair = '\\x5c\\x00-\\x7f';
  50         *   $domain_literal = "\\x5b($dtext|$quoted_pair)*\\x5d";
  51         *   $quoted_string = "\\x22($qtext|$quoted_pair)*\\x22";
  52         *   $domain_ref = $atom;
  53         *   $sub_domain = "($domain_ref|$domain_literal)";
  54         *   $word = "($atom|$quoted_string)";
  55         *   $domain = "$sub_domain(\\x2e$sub_domain)*";
  56         *   $local_part = "$word(\\x2e$word)*";
  57         *   $addr_spec = "$local_part\\x40$domain";
  58         */
  59  
  60        $re = '/^([^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-'
  61             .'\\x5d\\x7f-\\xff]+|\\x22([^\\x0d\\x22\\x5c\\x80-\\xff]|\\x5c\\x00-'
  62             .'\\x7f)*\\x22)(\\x2e([^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-'
  63             .'\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+|\\x22([^\\x0d\\x22\\x5c\\x80'
  64             .'-\\xff]|\\x5c\\x00-\\x7f)*\\x22))*\\x40([^\\x00-\\x20\\x22\\x28\\x29'
  65             .'\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+|\\x5b([^'
  66             .'\\x0d\\x5b-\\x5d\\x80-\\xff]|\\x5c\\x00-\\x7f)*\\x5d)(\\x2e([^\\x00-'
  67             .'\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-'
  68             .'\\xff]+|\\x5b([^\\x0d\\x5b-\\x5d\\x80-\\xff]|\\x5c\\x00-\\x7f)*'
  69             .'\\x5d))*$/'
  70        ;
  71      }
  72  
  73      if (!preg_match($re, $value))
  74      {
  75        $error = $this->getParameterHolder()->get('email_error');
  76        return false;
  77      }
  78  
  79      $checkDomain = $this->getParameterHolder()->get('check_domain');
  80      if ($checkDomain && function_exists('checkdnsrr'))
  81      {
  82        $tokens = explode('@', $value);
  83        if (!checkdnsrr($tokens[1], 'MX') && !checkdnsrr($tokens[1], 'A'))
  84        {
  85          $error = $this->getParameterHolder()->get('email_error');
  86  
  87          return false;
  88        }
  89      }
  90  
  91      return true;
  92    }
  93  
  94    /**
  95     * Initializes this validator.
  96     *
  97     * @param sfContext The current application context
  98     * @param array   An associative array of initialization parameters
  99     *
 100     * @return bool true, if initialization completes successfully, otherwise false
 101     */
 102    public function initialize($context, $parameters = null)
 103    {
 104      // initialize parent
 105      parent::initialize($context);
 106  
 107      // set defaults
 108      $this->getParameterHolder()->set('strict',       true);
 109      $this->getParameterHolder()->set('check_domain', false);
 110      $this->getParameterHolder()->set('email_error',  'Invalid input');
 111  
 112      $this->getParameterHolder()->add($parameters);
 113  
 114      return true;
 115    }
 116  }