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<?php
/**
* This file is part of the Nette Framework (http://nette.org)
*
* Copyright (c) 2004 David Grudl (http://davidgrudl.com)
*
* For the full copyright and license information, please view
* the file license.txt that was distributed with this source code.
*/
namespace Nette\Mail;
use Nette;
/**
* Sends emails via the SMTP server.
*
* @author David Grudl
*/
class SmtpMailer extends Nette\Object implements IMailer
{
/** @var resource */
private $connection;
/** @var string */
private $host;
/** @var int */
private $port;
/** @var string */
private $username;
/** @var string */
private $password;
/** @var string ssl | tls | (empty) */
private $secure;
/** @var int */
private $timeout;
public function __construct(array $options = array())
{
if (isset($options['host'])) {
$this->host = $options['host'];
$this->port = isset($options['port']) ? (int) $options['port'] : NULL;
} else {
$this->host = ini_get('SMTP');
$this->port = (int) ini_get('smtp_port');
}
$this->username = isset($options['username']) ? $options['username'] : '';
$this->password = isset($options['password']) ? $options['password'] : '';
$this->secure = isset($options['secure']) ? $options['secure'] : '';
$this->timeout = isset($options['timeout']) ? (int) $options['timeout'] : 20;
if (!$this->port) {
$this->port = $this->secure === 'ssl' ? 465 : 25;
}
}
/**
* Sends email.
* @return void
*/
public function send(Message $mail)
{
$mail = clone $mail;
$this->connect();
$from = $mail->getHeader('From');
if ($from) {
$from = array_keys($from);
$this->write("MAIL FROM:<$from[0]>", 250);
}
foreach (array_merge(
(array) $mail->getHeader('To'),
(array) $mail->getHeader('Cc'),
(array) $mail->getHeader('Bcc')
) as $email => $name) {
$this->write("RCPT TO:<$email>", array(250, 251));
}
$mail->setHeader('Bcc', NULL);
$data = $mail->generateMessage();
$this->write('DATA', 354);
$data = preg_replace('#^\.#m', '..', $data);
$this->write($data);
$this->write('.', 250);
$this->write('QUIT', 221);
$this->disconnect();
}
/**
* Connects and authenticates to SMTP server.
* @return void
*/
private function connect()
{
$this->connection = @fsockopen( // intentionally @
($this->secure === 'ssl' ? 'ssl://' : '') . $this->host,
$this->port, $errno, $error, $this->timeout
);
if (!$this->connection) {
throw new SmtpException($error, $errno);
}
stream_set_timeout($this->connection, $this->timeout, 0);
$this->read(); // greeting
$self = isset($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : 'localhost';
$this->write("EHLO $self");
if ((int) $this->read() !== 250) {
$this->write("HELO $self", 250);
}
if ($this->secure === 'tls') {
$this->write('STARTTLS', 220);
if (!stream_socket_enable_crypto($this->connection, TRUE, STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
throw new SmtpException('Unable to connect via TLS.');
}
$this->write("EHLO $self", 250);
}
if ($this->username != NULL && $this->password != NULL) {
$this->write('AUTH LOGIN', 334);
$this->write(base64_encode($this->username), 334, 'username');
$this->write(base64_encode($this->password), 235, 'password');
}
}
/**
* Disconnects from SMTP server.
* @return void
*/
private function disconnect()
{
fclose($this->connection);
$this->connection = NULL;
}
/**
* Writes data to server and checks response.
* @param string
* @param int response code
* @param string error message
* @return void
*/
private function write($line, $expectedCode = NULL, $message = NULL)
{
fwrite($this->connection, $line . Message::EOL);
if ($expectedCode && !in_array((int) $this->read(), (array) $expectedCode)) {
throw new SmtpException('SMTP server did not accept ' . ($message ? $message : $line));
}
}
/**
* Reads response from server.
* @return string
*/
private function read()
{
$s = '';
while (($line = fgets($this->connection, 1e3)) != NULL) { // intentionally ==
$s .= $line;
if (substr($line, 3, 1) === ' ') {
break;
}
}
return $s;
}
}
/**
* SMTP mailer exception.
*
* @author David Grudl
*/
class SmtpException extends \Exception
{
}
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