<?php

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");
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzI1MDI1NTI4MTc2MzkzNSA5NjI2OTM2MjgzOTY5NjUzIDM2OTc5ODYyMTQwNTA1OTA=