265 lines
9 KiB
PHP
265 lines
9 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Validate
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: EmailAddress.php 16223 2009-06-21 20:04:53Z thomas $
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*/
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/**
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* @see Zend_Validate_Abstract
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*/
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require_once 'Zend/Validate/Abstract.php';
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/**
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* @see Zend_Validate_Hostname
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*/
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require_once 'Zend/Validate/Hostname.php';
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/**
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* @category Zend
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* @package Zend_Validate
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Validate_EmailAddress extends Zend_Validate_Abstract
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{
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const INVALID = 'emailAddressInvalid';
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const INVALID_FORMAT = 'emailAddressInvalidFormat';
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const INVALID_HOSTNAME = 'emailAddressInvalidHostname';
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const INVALID_MX_RECORD = 'emailAddressInvalidMxRecord';
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const DOT_ATOM = 'emailAddressDotAtom';
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const QUOTED_STRING = 'emailAddressQuotedString';
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const INVALID_LOCAL_PART = 'emailAddressInvalidLocalPart';
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const LENGTH_EXCEEDED = 'emailAddressLengthExceeded';
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/**
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* @var array
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*/
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protected $_messageTemplates = array(
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self::INVALID => "Invalid type given, value should be a string",
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self::INVALID_FORMAT => "'%value%' is not a valid email address in the basic format local-part@hostname",
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self::INVALID_HOSTNAME => "'%hostname%' is not a valid hostname for email address '%value%'",
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self::INVALID_MX_RECORD => "'%hostname%' does not appear to have a valid MX record for the email address '%value%'",
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self::DOT_ATOM => "'%localPart%' not matched against dot-atom format",
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self::QUOTED_STRING => "'%localPart%' not matched against quoted-string format",
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self::INVALID_LOCAL_PART => "'%localPart%' is not a valid local part for email address '%value%'",
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self::LENGTH_EXCEEDED => "'%value%' exceeds the allowed length"
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);
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/**
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* @var array
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*/
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protected $_messageVariables = array(
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'hostname' => '_hostname',
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'localPart' => '_localPart'
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);
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/**
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* Local object for validating the hostname part of an email address
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*
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* @var Zend_Validate_Hostname
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* @depreciated
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*/
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public $hostnameValidator;
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/**
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* Whether we check for a valid MX record via DNS
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*
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* @var boolean
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*/
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protected $_validateMx = false;
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/**
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* @var string
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*/
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protected $_hostname;
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/**
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* @var string
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*/
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protected $_localPart;
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/**
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* Instantiates hostname validator for local use
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*
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* You can pass a bitfield to determine what types of hostnames are allowed.
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* These bitfields are defined by the ALLOW_* constants in Zend_Validate_Hostname
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* The default is to allow DNS hostnames only
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*
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* @param integer $allow OPTIONAL
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* @param bool $validateMx OPTIONAL
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* @param Zend_Validate_Hostname $hostnameValidator OPTIONAL
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* @return void
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*/
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public function __construct($allow = Zend_Validate_Hostname::ALLOW_DNS, $validateMx = false, Zend_Validate_Hostname $hostnameValidator = null)
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{
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$this->setValidateMx($validateMx);
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$this->setHostnameValidator($hostnameValidator, $allow);
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}
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/**
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* Returns the set hostname validator
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*
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* @return Zend_Validate_Hostname
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*/
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public function getHostnameValidator()
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{
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return $this->hostnameValidator;
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}
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/**
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* @param Zend_Validate_Hostname $hostnameValidator OPTIONAL
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* @param int $allow OPTIONAL
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* @return void
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*/
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public function setHostnameValidator(Zend_Validate_Hostname $hostnameValidator = null, $allow = Zend_Validate_Hostname::ALLOW_DNS)
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{
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if ($hostnameValidator === null) {
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$hostnameValidator = new Zend_Validate_Hostname($allow);
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}
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$this->hostnameValidator = $hostnameValidator;
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}
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/**
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* Whether MX checking via dns_get_mx is supported or not
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*
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* This currently only works on UNIX systems
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*
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* @return boolean
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*/
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public function validateMxSupported()
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{
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return function_exists('dns_get_mx');
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}
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/**
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* Set whether we check for a valid MX record via DNS
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*
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* This only applies when DNS hostnames are validated
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*
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* @param boolean $allowed Set allowed to true to validate for MX records, and false to not validate them
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*/
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public function setValidateMx($allowed)
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{
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$this->_validateMx = (bool) $allowed;
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}
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/**
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* Defined by Zend_Validate_Interface
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*
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* Returns true if and only if $value is a valid email address
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* according to RFC2822
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*
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* @link http://www.ietf.org/rfc/rfc2822.txt RFC2822
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* @link http://www.columbia.edu/kermit/ascii.html US-ASCII characters
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* @param string $value
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* @return boolean
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*/
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public function isValid($value)
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{
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if (!is_string($value)) {
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$this->_error(self::INVALID);
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return false;
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}
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$matches = array();
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$length = true;
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$this->_setValue($value);
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// Split email address up and disallow '..'
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if ((strpos($value, '..') !== false) or
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(!preg_match('/^(.+)@([^@]+)$/', $value, $matches))) {
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$this->_error(self::INVALID_FORMAT);
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return false;
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}
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$this->_localPart = $matches[1];
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$this->_hostname = $matches[2];
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if ((strlen($this->_localPart) > 64) || (strlen($this->_hostname) > 255)) {
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$length = false;
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$this->_error(self::LENGTH_EXCEEDED);
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}
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// Match hostname part
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$hostnameResult = $this->hostnameValidator->setTranslator($this->getTranslator())
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->isValid($this->_hostname);
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if (!$hostnameResult) {
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$this->_error(self::INVALID_HOSTNAME);
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// Get messages and errors from hostnameValidator
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foreach ($this->hostnameValidator->getMessages() as $code => $message) {
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$this->_messages[$code] = $message;
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}
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foreach ($this->hostnameValidator->getErrors() as $error) {
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$this->_errors[] = $error;
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}
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} else if ($this->_validateMx) {
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// MX check on hostname via dns_get_record()
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if ($this->validateMxSupported()) {
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$result = dns_get_mx($this->_hostname, $mxHosts);
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if (count($mxHosts) < 1) {
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$hostnameResult = false;
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$this->_error(self::INVALID_MX_RECORD);
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}
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} else {
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/**
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* MX checks are not supported by this system
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* @see Zend_Validate_Exception
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*/
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require_once 'Zend/Validate/Exception.php';
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throw new Zend_Validate_Exception('Internal error: MX checking not available on this system');
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}
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}
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// First try to match the local part on the common dot-atom format
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$localResult = false;
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// Dot-atom characters are: 1*atext *("." 1*atext)
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// atext: ALPHA / DIGIT / and "!", "#", "$", "%", "&", "'", "*",
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// "+", "-", "/", "=", "?", "^", "_", "`", "{", "|", "}", "~"
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$atext = 'a-zA-Z0-9\x21\x23\x24\x25\x26\x27\x2a\x2b\x2d\x2f\x3d\x3f\x5e\x5f\x60\x7b\x7c\x7d\x7e';
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if (preg_match('/^[' . $atext . ']+(\x2e+[' . $atext . ']+)*$/', $this->_localPart)) {
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$localResult = true;
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} else {
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// Try quoted string format
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// Quoted-string characters are: DQUOTE *([FWS] qtext/quoted-pair) [FWS] DQUOTE
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// qtext: Non white space controls, and the rest of the US-ASCII characters not
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// including "\" or the quote character
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$noWsCtl = '\x01-\x08\x0b\x0c\x0e-\x1f\x7f';
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$qtext = $noWsCtl . '\x21\x23-\x5b\x5d-\x7e';
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$ws = '\x20\x09';
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if (preg_match('/^\x22([' . $ws . $qtext . '])*[$ws]?\x22$/', $this->_localPart)) {
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$localResult = true;
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} else {
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$this->_error(self::DOT_ATOM);
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$this->_error(self::QUOTED_STRING);
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$this->_error(self::INVALID_LOCAL_PART);
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}
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}
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// If both parts valid, return true
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if ($localResult && $hostnameResult && $length) {
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return true;
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} else {
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return false;
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}
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}
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}
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