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Diffstat (limited to 'lib/Zend/Mail/Protocol/Smtp.php')
| -rw-r--r-- | lib/Zend/Mail/Protocol/Smtp.php | 443 |
1 files changed, 443 insertions, 0 deletions
diff --git a/lib/Zend/Mail/Protocol/Smtp.php b/lib/Zend/Mail/Protocol/Smtp.php new file mode 100644 index 0000000..18ac77a --- /dev/null +++ b/lib/Zend/Mail/Protocol/Smtp.php @@ -0,0 +1,443 @@ +<?php + +/** + * Zend Framework + * + * LICENSE + * + * This source file is subject to the new BSD license that is bundled + * with this package in the file LICENSE.txt. + * It is also available through the world-wide-web at this URL: + * http://framework.zend.com/license/new-bsd + * If you did not receive a copy of the license and are unable to + * obtain it through the world-wide-web, please send an email + * to license@zend.com so we can send you a copy immediately. + * + * @category Zend + * @package Zend_Mail + * @subpackage Protocol + * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + * @version $Id: Smtp.php 11196 2008-09-02 00:56:25Z yoshida@zend.co.jp $ + */ + + +/** + * @see Zend_Mime + */ +require_once 'Zend/Mime.php'; + + +/** + * @see Zend_Mail_Protocol_Abstract + */ +require_once 'Zend/Mail/Protocol/Abstract.php'; + + +/** + * Smtp implementation of Zend_Mail_Protocol_Abstract + * + * Minimum implementation according to RFC2821: EHLO, MAIL FROM, RCPT TO, DATA, RSET, NOOP, QUIT + * + * @category Zend + * @package Zend_Mail + * @subpackage Protocol + * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + */ +class Zend_Mail_Protocol_Smtp extends Zend_Mail_Protocol_Abstract +{ + /** + * The transport method for the socket + * + * @var string + */ + protected $_transport = 'tcp'; + + + /** + * Indicates that a session is requested to be secure + * + * @var string + */ + protected $_secure; + + + /** + * Indicates an smtp session has been started by the HELO command + * + * @var boolean + */ + protected $_sess = false; + + + /** + * Indicates the HELO command has been issues + * + * @var unknown_type + */ + protected $_helo = false; + + + /** + * Indicates an smtp AUTH has been issued and authenticated + * + * @var unknown_type + */ + protected $_auth = false; + + + /** + * Indicates a MAIL command has been issued + * + * @var unknown_type + */ + protected $_mail = false; + + + /** + * Indicates one or more RCTP commands have been issued + * + * @var unknown_type + */ + protected $_rcpt = false; + + + /** + * Indicates that DATA has been issued and sent + * + * @var unknown_type + */ + protected $_data = null; + + + /** + * Constructor. + * + * @param string $host + * @param integer $port + * @param array $config + * @return void + * @throws Zend_Mail_Protocol_Exception + */ + public function __construct($host = '127.0.0.1', $port = null, array $config = array()) + { + if (isset($config['ssl'])) { + switch (strtolower($config['ssl'])) { + case 'tls': + $this->_secure = 'tls'; + break; + + case 'ssl': + $this->_transport = 'ssl'; + $this->_secure = 'ssl'; + if ($port == null) { + $port = 465; + } + break; + + default: + /** + * @see Zend_Mail_Protocol_Exception + */ + require_once 'Zend/Mail/Protocol/Exception.php'; + throw new Zend_Mail_Protocol_Exception($config['ssl'] . ' is unsupported SSL type'); + break; + } + } + + // If no port has been specified then check the master PHP ini file. Defaults to 25 if the ini setting is null. + if ($port == null) { + if (($port = ini_get('smtp_port')) == '') { + $port = 25; + } + } + + parent::__construct($host, $port); + } + + + /** + * Connect to the server with the parameters given in the constructor. + * + * @return boolean + */ + public function connect() + { + return $this->_connect($this->_transport . '://' . $this->_host . ':'. $this->_port); + } + + + /** + * Initiate HELO/EHLO sequence and set flag to indicate valid smtp session + * + * @param string $host The client hostname or IP address (default: 127.0.0.1) + * @throws Zend_Mail_Protocol_Exception + * @return void + */ + public function helo($host = '127.0.0.1') + { + // Respect RFC 2821 and disallow HELO attempts if session is already initiated. + if ($this->_sess === true) { + /** + * @see Zend_Mail_Protocol_Exception + */ + require_once 'Zend/Mail/Protocol/Exception.php'; + throw new Zend_Mail_Protocol_Exception('Cannot issue HELO to existing session'); + } + + // Validate client hostname + if (!$this->_validHost->isValid($host)) { + /** + * @see Zend_Mail_Protocol_Exception + */ + require_once 'Zend/Mail/Protocol/Exception.php'; + throw new Zend_Mail_Protocol_Exception(join(', ', $this->_validHost->getMessages())); + } + + // Initiate helo sequence + $this->_expect(220, 300); // Timeout set for 5 minutes as per RFC 2821 4.5.3.2 + $this->_ehlo($host); + + // If a TLS session is required, commence negotiation + if ($this->_secure == 'tls') { + $this->_send('STARTTLS'); + $this->_expect(220, 180); + if (!stream_socket_enable_crypto($this->_socket, true, STREAM_CRYPTO_METHOD_TLS_CLIENT)) { + /** + * @see Zend_Mail_Protocol_Exception + */ + require_once 'Zend/Mail/Protocol/Exception.php'; + throw new Zend_Mail_Protocol_Exception('Unable to connect via TLS'); + } + $this->_ehlo($host); + } + + $this->_startSession(); + $this->auth(); + } + + + /** + * Send EHLO or HELO depending on capabilities of smtp host + * + * @param string $host The client hostname or IP address (default: 127.0.0.1) + * @throws Zend_Mail_Protocol_Exception + * @return void + */ + protected function _ehlo($host) + { + // Support for older, less-compliant remote servers. Tries multiple attempts of EHLO or HELO. + try { + $this->_send('EHLO ' . $host); + $this->_expect(250, 300); // Timeout set for 5 minutes as per RFC 2821 4.5.3.2 + } catch (Zend_Mail_Protocol_Exception $e) { + $this->_send('HELO ' . $host); + $this->_expect(250, 300); // Timeout set for 5 minutes as per RFC 2821 4.5.3.2 + } catch (Zend_Mail_Protocol_Exception $e) { + throw $e; + } + } + + + /** + * Issues MAIL command + * + * @param string $from Sender mailbox + * @throws Zend_Mail_Protocol_Exception + * @return void + */ + public function mail($from) + { + if ($this->_sess !== true) { + /** + * @see Zend_Mail_Protocol_Exception + */ + require_once 'Zend/Mail/Protocol/Exception.php'; + throw new Zend_Mail_Protocol_Exception('A valid session has not been started'); + } + + $this->_send('MAIL FROM:<' . $from . '>'); + $this->_expect(250, 300); // Timeout set for 5 minutes as per RFC 2821 4.5.3.2 + + // Set mail to true, clear recipients and any existing data flags as per 4.1.1.2 of RFC 2821 + $this->_mail = true; + $this->_rcpt = false; + $this->_data = false; + } + + + /** + * Issues RCPT command + * + * @param string $to Receiver(s) mailbox + * @throws Zend_Mail_Protocol_Exception + * @return void + */ + public function rcpt($to) + { + if ($this->_mail !== true) { + /** + * @see Zend_Mail_Protocol_Exception + */ + require_once 'Zend/Mail/Protocol/Exception.php'; + throw new Zend_Mail_Protocol_Exception('No sender reverse path has been supplied'); + } + + // Set rcpt to true, as per 4.1.1.3 of RFC 2821 + $this->_send('RCPT TO:<' . $to . '>'); + $this->_expect(array(250, 251), 300); // Timeout set for 5 minutes as per RFC 2821 4.5.3.2 + $this->_rcpt = true; + } + + + /** + * Issues DATA command + * + * @param string $data + * @throws Zend_Mail_Protocol_Exception + * @return void + */ + public function data($data) + { + // Ensure recipients have been set + if ($this->_rcpt !== true) { + /** + * @see Zend_Mail_Protocol_Exception + */ + require_once 'Zend/Mail/Protocol/Exception.php'; + throw new Zend_Mail_Protocol_Exception('No recipient forward path has been supplied'); + } + + $this->_send('DATA'); + $this->_expect(354, 120); // Timeout set for 2 minutes as per RFC 2821 4.5.3.2 + + foreach (explode(Zend_Mime::LINEEND, $data) as $line) { + if (strpos($line, '.') === 0) { + // Escape lines prefixed with a '.' + $line = '.' . $line; + } + $this->_send($line); + } + + $this->_send('.'); + $this->_expect(250, 600); // Timeout set for 10 minutes as per RFC 2821 4.5.3.2 + $this->_data = true; + } + + + /** + * Issues the RSET command end validates answer + * + * Can be used to restore a clean smtp communication state when a transaction has been cancelled or commencing a new transaction. + * + * @return void + */ + public function rset() + { + $this->_send('RSET'); + // MS ESMTP doesn't follow RFC, see [ZF-1377] + $this->_expect(array(250, 220)); + + $this->_mail = false; + $this->_rcpt = false; + $this->_data = false; + } + + + /** + * Issues the NOOP command end validates answer + * + * Not used by Zend_Mail, could be used to keep a connection alive or check if it is still open. + * + * @return void + */ + public function noop() + { + $this->_send('NOOP'); + $this->_expect(250, 300); // Timeout set for 5 minutes as per RFC 2821 4.5.3.2 + } + + + /** + * Issues the VRFY command end validates answer + * + * Not used by Zend_Mail. + * + * @param string $user User Name or eMail to verify + * @return void + */ + public function vrfy($user) + { + $this->_send('VRFY ' . $user); + $this->_expect(array(250, 251, 252), 300); // Timeout set for 5 minutes as per RFC 2821 4.5.3.2 + } + + + /** + * Issues the QUIT command and clears the current session + * + * @return void + */ + public function quit() + { + if ($this->_sess) { + $this->_send('QUIT'); + $this->_expect(221, 300); // Timeout set for 5 minutes as per RFC 2821 4.5.3.2 + $this->_stopSession(); + } + } + + + /** + * Default authentication method + * + * This default method is implemented by AUTH adapters to properly authenticate to a remote host. + * + * @throws Zend_Mail_Protocol_Exception + * @return void + */ + public function auth() + { + if ($this->_auth === true) { + /** + * @see Zend_Mail_Protocol_Exception + */ + require_once 'Zend/Mail/Protocol/Exception.php'; + throw new Zend_Mail_Protocol_Exception('Already authenticated for this session'); + } + } + + + /** + * Closes connection + * + * @return void + */ + public function disconnect() + { + $this->_disconnect(); + } + + + /** + * Start mail session + * + * @return void + */ + protected function _startSession() + { + $this->_sess = true; + } + + + /** + * Stop mail session + * + * @return void + */ + protected function _stopSession() + { + $this->_sess = false; + } +} |