<?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:----ODk0MTEyMTI2NTIxMjg1MiA1NDQyMjk0NjMwNDY3NDQ1IDIyODU5MTg2NzgxNzgwNjQ=