* @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(); }