Support fetching private posts

diff --git a/src/Module/Objects.php b/src/Module/Objects.php
index 8080289f15866143a2207209d56d3666df448964..e0326548695ca5bf11ecdc575d7a7dfdf2a79d90 100644 (file)
--- a/src/Module/Objects.php
+++ b/src/Module/Objects.php
@@ -25,9 +25,11 @@ use Friendica\BaseModule;
 use Friendica\Core\System;
 use Friendica\Database\DBA;
 use Friendica\DI;
+use Friendica\Model\Contact;
 use Friendica\Model\Item;
 use Friendica\Network\HTTPException;
 use Friendica\Protocol\ActivityPub;
+use Friendica\Util\HTTPSignature;
 use Friendica\Util\Network;
 
 /**
@@ -45,17 +47,27 @@ class Objects extends BaseModule
                        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', 'uid', 'origin', 'author-link', 'changed', 'private', 'psid'],
+                       ['guid' => $parameters['guid']], ['order' => ['origin' => true]]);
+
+               $validated = false;
+               $requester = HTTPSignature::getSigner('', $_SERVER);
+               if (!empty($requester) && $item['origin']) {
+                       $requester_id = Contact::getIdForURL($requester, $item['uid']);
+                       if (!empty($requester_id)) {
+                               $permissionSets = DI::permissionSet()->selectByContactId($requester_id, $item['uid']);
+                               if (!empty($permissionSets)) {
+                                       $psid = array_merge($permissionSets->column('id'),
+                                               [DI::permissionSet()->getIdFromACL($item['uid'], '', '', '', '')]);
+                                       $validated = in_array($item['psid'], $psid);
+                               }
+                       }
+               }
+
+               if (!$validated && !in_array($item['private'], [Item::PUBLIC, Item::UNLISTED])) {
+                       unset($item);
+               }
 
-               $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) || !$item['origin'] && (parse_url($item['author-link'], PHP_URL_HOST) != parse_url(DI::baseUrl()->get(), PHP_URL_HOST))) {
                        throw new HTTPException\NotFoundException();