* @author Jim Jagielski (jimjag)
* @author Andy Prevost (codeworxtech)
* @author Brent R. Matzelle (original founder)
* @copyright 2012 - 2020 Marcus Bointon
* @copyright 2010 - 2012 Jim Jagielski
* @copyright 2004 - 2009 Andy Prevost
* @license https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html GNU Lesser General Public License
* @note This program is distributed in the hope that it will be useful - WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*/
namespace PHPMailer\PHPMailer;
/**
* OAuthTokenProvider - OAuth2 token provider interface.
* Provides base64 encoded OAuth2 auth strings for SMTP authentication.
*
* @see OAuth
* @see SMTP::authenticate()
*
* @author Peter Scopes (pdscopes)
* @author Marcus Bointon (Synchro/coolbru)
*/
interface OAuthTokenProvider
{
/**
* Generate a base64-encoded OAuth token ensuring that the access token has not expired.
* The string to be base 64 encoded should be in the form:
* "user=\001auth=Bearer \001\001"
*
* @return string
*/
public function getOauth64();
}