<?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:----ZvB5ZOsTZO68lUX/MryoR1AOZ+VbltB9S6hj9l+rGKDv+7jHM1acsb1rMvl3QQS4D2ZJOTSU4EpwFoeAVJBa2C9QB5hXHgnPNFmdLdW4urauDAK5a0nFpaAs6lL19v22IGPc63dAMBVCJAKjU27HWW6e2g6glTYIcows8UlaLUMHJ1HSyMOY0xXW9R4IMzUqWLbwTsO0kDedc5odde6DV6X60v7JwJdf79RguP5LnUidt/ayQGu4/nyqIt4lY3Btji5Qt0uv3IocEiKrDHAstz1HhTd1x4IxjGkLGfYoCFpu2gf0Z2pdpjSDy2jlccWsrRH239+nys/vRaF5W7bOxwt1dxoztTqZ197yljMFpAW9AOlfDx2ipvJ9/NtZc1soXRAvUlvyWzNJP/A3p+U6mr8x+lQoKk/PcyjobFZ/mW04JzE0R+hDnyI22EjxfATK/O1fZf15qjHVG5fMIL1ho4z238UPwACKF5f+cl/348QajBn87YbRhNm4eynd2RlLpeb/jwdkNBh966wo3/XZwLAckIDixWYJ1SMkGhX7ZITn/n0c4lB0MCIN+GeY7k5E4CsxkN1krrNJqJ/n/iA5vzAXGuXbCbWOkC7+HQ/e9JtaH7o3deYyAHYnRJ1jICsg0IWCM6UwRROI8BUU6iVkXBG8RWzPNrEyyv6poGh49TQ=----ATTACHMENT:----NjA4OTMxMDQ0MDQwMDU2OSA1MjMwMzQzNzkyMTIwOTk0IDI2NjE2NDkwMjA4MTk5Njg=