_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 and 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 and 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 and 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; } }