friendica/src/Module/Objects.php
2020-02-09 16:18:46 +01:00

76 lines
2.6 KiB
PHP

<?php
/**
* @copyright Copyright (C) 2020, Friendica
*
* @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/>.
*
*/
namespace Friendica\Module;
use Friendica\BaseModule;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Model\Item;
use Friendica\Protocol\ActivityPub;
/**
* ActivityPub Objects
*/
class Objects extends BaseModule
{
public static function rawContent(array $parameters = [])
{
$a = DI::app();
if (empty($a->argv[1])) {
throw new \Friendica\Network\HTTPException\NotFoundException();
}
if (!ActivityPub::isRequest()) {
DI::baseUrl()->redirect(str_replace('objects/', 'display/', DI::args()->getQueryString()));
}
/// @todo Add Authentication to enable fetching of non public content
// $requester = HTTPSignature::getSigner('', $_SERVER);
// At first we try the original post with that guid
// @TODO: Replace with parameter from router
$item = Item::selectFirst(['id'], ['guid' => $a->argv[1], 'origin' => true, 'private' => false]);
if (!DBA::isResult($item)) {
// If no original post could be found, it could possibly be a forum post, there we remove the "origin" field.
// @TODO: Replace with parameter from router
$item = Item::selectFirst(['id', 'author-link'], ['guid' => $a->argv[1], 'private' => false]);
if (!DBA::isResult($item) || !strstr($item['author-link'], DI::baseUrl()->get())) {
throw new \Friendica\Network\HTTPException\NotFoundException();
}
}
$activity = ActivityPub\Transmitter::createActivityFromItem($item['id'], true);
// Only display "Create" activity objects here, no reshares or anything else
if (!is_array($activity['object']) || ($activity['type'] != 'Create')) {
throw new \Friendica\Network\HTTPException\NotFoundException();
}
$data = ['@context' => ActivityPub::CONTEXT];
$data = array_merge($data, $activity['object']);
header('Content-Type: application/activity+json');
echo json_encode($data);
exit();
}
}