<?php
/**
- * @file src/Module/Objects.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\Protocol\ActivityPub;
use Friendica\Core\System;
-use Friendica\Model\Item;
use Friendica\Database\DBA;
-use Friendica\Util\HTTPSignature;
+use Friendica\DI;
+use Friendica\Model\Item;
+use Friendica\Network\HTTPException;
+use Friendica\Protocol\ActivityPub;
+use Friendica\Util\Network;
/**
* ActivityPub Objects
*/
class Objects extends BaseModule
{
- public static function rawContent()
+ public static function rawContent(array $parameters = [])
{
- $a = self::getApp();
-
- if (empty($a->argv[1])) {
- System::httpExit(404);
+ if (empty($parameters['guid'])) {
+ throw new HTTPException\BadRequestException();
}
if (!ActivityPub::isRequest()) {
- $a->internalRedirect(str_replace('objects/', 'display/', $a->query_string));
+ DI::baseUrl()->redirect(str_replace('objects/', 'display/', DI::args()->getQueryString()));
}
/// @todo Add Authentication to enable fetching of non public content
// $requester = HTTPSignature::getSigner('', $_SERVER);
- $item = Item::selectFirst(['id', 'author-link'], ['guid' => $a->argv[1], 'private' => false]);
- if (!DBA::isResult($item)) {
- System::httpExit(404);
+ $item = Item::selectFirst(
+ ['id', 'origin', 'author-link', 'changed'],
+ [
+ 'guid' => $parameters['guid'],
+ 'private' => [Item::PUBLIC, Item::UNLISTED]
+ ],
+ ['order' => ['origin' => true]]
+ );
+ // Valid items are original post or posted from this node (including in the case of a forum)
+ if (!DBA::isResult($item) || !$item['origin'] && !strstr($item['author-link'], DI::baseUrl()->get())) {
+ throw new HTTPException\NotFoundException();
}
- if (!strstr($item['author-link'], System::baseUrl())) {
- System::httpExit(404);
- }
+ $etag = md5($parameters['guid'] . '-' . $item['changed']);
+ $last_modified = $item['changed'];
+ Network::checkEtagModified($etag, $last_modified);
+
+ if (empty($parameters['activity'])) {
+ $activity = ActivityPub\Transmitter::createActivityFromItem($item['id'], true);
+ $activity['type'] = $activity['type'] == 'Update' ? 'Create' : $activity['type'];
- $data = ActivityPub\Transmitter::createObjectFromItemID($item['id']);
+ // Only display "Create" activity objects here, no reshares or anything else
+ if (empty($activity['object']) || ($activity['type'] != 'Create')) {
+ throw new HTTPException\NotFoundException();
+ }
+
+ $data = ['@context' => ActivityPub::CONTEXT];
+ $data = array_merge($data, $activity['object']);
+ } elseif (in_array($parameters['activity'], ['Create', 'Announce', 'Update',
+ 'Like', 'Dislike', 'Accept', 'Reject', 'TentativeAccept', 'Follow', 'Add'])) {
+ $data = ActivityPub\Transmitter::createActivityFromItem($item['id']);
+ if (empty($data)) {
+ throw new HTTPException\NotFoundException();
+ }
+ if ($parameters['activity'] != 'Create') {
+ $data['type'] = $parameters['activity'];
+ $data['id'] = str_replace('/Create', '/' . $parameters['activity'], $data['id']);
+ }
+ } else {
+ throw new HTTPException\NotFoundException();
+ }
- header('Content-Type: application/activity+json');
- echo json_encode($data);
- exit();
+ // Relaxed CORS header for public items
+ header('Access-Control-Allow-Origin: *');
+ System::jsonExit($data, 'application/activity+json');
}
}