119 lines
4.1 KiB
PHP
119 lines
4.1 KiB
PHP
<?php
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/*
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* $Id: Email.php 5798 2009-06-02 15:10:46Z piccoloprincipe $
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.org>.
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*/
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/**
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* Doctrine_Validator_Email
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*
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* @package Doctrine
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* @subpackage Validator
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link www.phpdoctrine.org
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* @since 1.0
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* @version $Revision: 5798 $
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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*/
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class Doctrine_Validator_Email
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{
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/**
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* checks if given value is a valid email address
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*
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* @link http://iamcal.com/publish/articles/php/parsing_email/pdf/
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* @param mixed $value
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* @return boolean
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*/
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public function validate($value)
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{
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if (is_null($value)) {
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return true;
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}
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if (isset($this->args) && (! isset($this->args['check_mx']) || $this->args['check_mx'] == true)) {
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$parts = explode('@', $value);
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if (isset($parts[1]) && $parts[1] && ! $this->_checkMX($parts[1])) {
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return false;
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}
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}
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$e = explode('.', $value);
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$tld = end($e);
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if (preg_match("/[^a-zA-Z]/", $tld)) {
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return false;
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}
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$qtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]';
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$dtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]';
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$atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+';
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$quotedPair = '\\x5c[\\x00-\\x7f]';
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$domainLiteral = "\\x5b($dtext|$quotedPair)*\\x5d";
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$quotedString = "\\x22($qtext|$quotedPair)*\\x22";
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$domainRef = $atom;
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$subDomain = "($domainRef|$domainLiteral)";
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$word = "($atom|$quotedString)";
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$domain = "$subDomain(\\x2e$subDomain)+";
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/*
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following pseudocode to allow strict checking - ask pookey about this if you're puzzled
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if ($this->getValidationOption('strict_checking') == true) {
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$domain = "$sub_domain(\\x2e$sub_domain)*";
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}
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*/
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$localPart = "$word(\\x2e$word)*";
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$addrSpec = "$localPart\\x40$domain";
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return (bool) preg_match("!^$addrSpec$!D", $value);
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}
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/**
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* Check DNA Records for MX type
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*
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* @param string $host Host name
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* @return boolean
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*/
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private function _checkMX($host)
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{
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// We have different behavior here depending of OS and PHP version
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if (strtolower(substr(PHP_OS, 0, 3)) == 'win' && version_compare(PHP_VERSION, '5.3.0', '<')) {
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$output = array();
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@exec('nslookup -type=MX '.escapeshellcmd($host) . ' 2>&1', $output);
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if (empty($output)) {
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throw new Doctrine_Exception('Unable to execute DNS lookup. Are you sure PHP can call exec()?');
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}
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foreach ($output as $line) {
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if (preg_match('/^'.$host.'/', $line)) {
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return true;
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}
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}
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return false;
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} else if (function_exists('checkdnsrr')) {
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return checkdnsrr($host, 'MX');
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}
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throw new Doctrine_Exception('Could not retrieve DNS record information. Remove check_mx = true to prevent this warning');
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}
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} |