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doctrine2/lib/Doctrine/Validator/Email.php
2007-09-02 20:00:27 +00:00

80 lines
2.8 KiB
PHP

<?php
/*
* $Id$
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.com>.
*/
/**
* Doctrine_Validator_Email
*
* @package Doctrine
* @category Object Relational Mapping
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.phpdoctrine.com
* @since 1.0
* @version $Revision$
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
*/
class Doctrine_Validator_Email
{
/**
* checks if given value is a valid email address
*
* @link http://iamcal.com/publish/articles/php/parsing_email/pdf/
* @param mixed $value
* @return boolean
*/
public function validate($value)
{
if (empty($value)) {
return true;
}
if (isset($this->args)) {
$parts = explode('@', $value);
if (isset($parts[1]) && function_exists('checkdnsrr')) {
if ( ! checkdnsrr($parts[1], 'MX')) {
return false;
}
}
}
$qtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]';
$dtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]';
$atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+';
$quotedPair = '\\x5c[\\x00-\\x7f]';
$domainLiteral = "\\x5b($dtext|$quotedPair)*\\x5d";
$quotedString = "\\x22($qtext|$quotedPair)*\\x22";
$domain_ref = $atom;
$subDomain = "($domain_ref|$domainLiteral)";
$word = "($atom|$quotedString)";
$domain = "$subDomain(\\x2e$subDomain)+";
/*
following pseudocode to allow strict checking - ask pookey about this if you're puzzled
if ($this->getValidationOption('strict_checking') == true) {
$domain = "$sub_domain(\\x2e$sub_domain)*";
}
*/
$localPart = "$word(\\x2e$word)*";
$addrSpec = "$localPart\\x40$domain";
return (bool) preg_match("!^$addrSpec$!D", $value);
}
}