Fixes "Undefined index: object"

[friendica.git/.git] / src / Module / Objects.php

diff --git a/src/Module/Objects.php b/src/Module/Objects.php
index d51d578..cce2b73 100644 (file)
--- a/src/Module/Objects.php
+++ b/src/Module/Objects.php
@@ -1,38 +1,74 @@
 <?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\DI;
+use Friendica\Model\Item;
+use Friendica\Protocol\ActivityPub;
 
 /**
  * ActivityPub Objects
  */
 class Objects extends BaseModule
 {
-       public static function rawContent()
+       public static function rawContent(array $parameters = [])
        {
-               $a = self::getApp();
+               $a = DI::app();
 
                if (empty($a->argv[1])) {
-                       System::httpExit(404);
+                       throw new \Friendica\Network\HTTPException\NotFoundException();
                }
 
                if (!ActivityPub::isRequest()) {
-                       $a->internalRedirect(str_replace('objects/', 'display/', $a->query_string));
+                       DI::baseUrl()->redirect(str_replace('objects/', 'display/', DI::args()->getQueryString()));
                }
 
-               $item = Item::selectFirst(['id'], ['guid' => $a->argv[1], 'wall' => true, 'private' => false]);
+               /// @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' => $a->argv[1], 'origin' => true, 'private' => [item::PUBLIC, Item::UNLISTED]]);
                if (!DBA::isResult($item)) {
-                       System::httpExit(404);
+                       // 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' => $a->argv[1], 'private' => [item::PUBLIC, Item::UNLISTED]]);
+                       if (!DBA::isResult($item) || !strstr($item['author-link'], DI::baseUrl()->get())) {
+                               throw new \Friendica\Network\HTTPException\NotFoundException();
+                       }
+               }
+
+               $activity = ActivityPub\Transmitter::createActivityFromItem($item['id'], true);
+               $activity['type'] = $activity['type'] == 'Update' ? 'Create' : $activity['type'];
+
+               // Only display "Create" activity objects here, no reshares or anything else
+               if (empty($activity['object']) || ($activity['type'] != 'Create')) {
+                       throw new \Friendica\Network\HTTPException\NotFoundException();
                }
 
-               $data = ActivityPub\Transmitter::createObjectFromItemID($item['id']);
+               $data = ['@context' => ActivityPub::CONTEXT];
+               $data = array_merge($data, $activity['object']);
 
                header('Content-Type: application/activity+json');
                echo json_encode($data);