friendica/mod/dfrn_poll.php

<?php
/**
 * @copyright Copyright (C) 2010-2021, the Friendica project
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 */

use Friendica\App;
use Friendica\Protocol\OStatus;
use Friendica\Network\HTTPException;

function dfrn_poll_init(App $a)
{
	if ($a->argc > 1) {
		$nickname = $a->argv[1];
		header("Content-type: application/atom+xml");
		$last_update = $_GET['last_update'] ?? '';
		echo OStatus::feed($nickname, $last_update, 10);
		exit();
	}
	throw new HTTPException\BadRequestException();
}