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<?php
/*
* This file is part of SwiftMailer.
* (c) 2004-2009 Chris Corbyn
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* Handles XOAUTH2 authentication.
*
* Example:
* <code>
* $transport = (new Swift_SmtpTransport('smtp.gmail.com', 587, 'tls'))
* ->setAuthMode('XOAUTH2')
* ->setUsername('YOUR_EMAIL_ADDRESS')
* ->setPassword('YOUR_ACCESS_TOKEN');
* </code>
*
* @author xu.li<AthenaLightenedMyPath@gmail.com>
*
* @see https://developers.google.com/google-apps/gmail/xoauth2_protocol
*/
class Swift_Transport_Esmtp_Auth_XOAuth2Authenticator implements Swift_Transport_Esmtp_Authenticator
{
/**
* Get the name of the AUTH mechanism this Authenticator handles.
*
* @return string
*/
public function getAuthKeyword()
{
return 'XOAUTH2';
}
/**
* {@inheritdoc}
*/
public function authenticate(Swift_Transport_SmtpAgent $agent, $email, $token)
{
try {
$param = $this->constructXOAuth2Params($email, $token);
$agent->executeCommand('AUTH XOAUTH2 '.$param."\r\n", [235]);
return true;
} catch (Swift_TransportException $e) {
$agent->executeCommand("RSET\r\n", [250]);
throw $e;
}
}
/**
* Construct the auth parameter.
*
* @see https://developers.google.com/google-apps/gmail/xoauth2_protocol#the_sasl_xoauth2_mechanism
*/
protected function constructXOAuth2Params($email, $token)
{
return base64_encode("user=$email\1auth=Bearer $token\1\1");
}
}
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