api(remote): fix use of missing node_id field

Fixes pterodactyl#5088

Author: matthewpi

app/Http/Controllers/Api/Remote/Backups/BackupRemoteUploadController.php

@@ -42,15 +42,22 @@ public function __invoke(Request $request, string $backup): JsonResponse
             throw new BadRequestHttpException('A non-empty "size" query parameter must be provided.');
         }
 
-        /** @var \Pterodactyl\Models\Backup $backup */
-        $backup = Backup::query()
-            ->where('node_id', $node->id)
+        /** @var \Pterodactyl\Models\Backup $model */
+        $model = Backup::query()
             ->where('uuid', $backup)
             ->firstOrFail();
 
+        // Check that the backup is "owned" by the node making the request. This avoids other nodes
+        // from messing with backups that they don't own.
+        /** @var \Pterodactyl\Models\Server $server */
+        $server = $model->server;
+        if ($server->node_id !== $node->id) {
+            throw new HttpForbiddenException('You do not have permission to access that backup.');
+        }
+
         // Prevent backups that have already been completed from trying to
         // be uploaded again.
-        if (!is_null($backup->completed_at)) {
+        if (!is_null($model->completed_at)) {
             throw new ConflictHttpException('This backup is already in a completed state.');
         }
 
@@ -61,7 +68,7 @@ public function __invoke(Request $request, string $backup): JsonResponse
         }
 
         // The path where backup will be uploaded to
-        $path = sprintf('%s/%s.tar.gz', $backup->server->uuid, $backup->uuid);
+        $path = sprintf('%s/%s.tar.gz', $model->server->uuid, $model->uuid);
 
         // Get the S3 client
         $client = $adapter->getClient();
@@ -99,7 +106,7 @@ public function __invoke(Request $request, string $backup): JsonResponse
         }
 
         // Set the upload_id on the backup in the database.
-        $backup->update(['upload_id' => $params['UploadId']]);
+        $model->update(['upload_id' => $params['UploadId']]);
 
         return new JsonResponse([
             'parts' => $parts,

app/Http/Controllers/Api/Remote/Backups/BackupStatusController.php

@@ -36,10 +36,17 @@ public function index(ReportBackupCompleteRequest $request, string $backup): Jso
 
         /** @var \Pterodactyl\Models\Backup $model */
         $model = Backup::query()
-            ->where('node_id', $node->id)
             ->where('uuid', $backup)
             ->firstOrFail();
 
+        // Check that the backup is "owned" by the node making the request. This avoids other nodes
+        // from messing with backups that they don't own.
+        /** @var \Pterodactyl\Models\Server $server */
+        $server = $model->server;
+        if ($server->node_id !== $node->id) {
+            throw new HttpForbiddenException('You do not have permission to access that backup.');
+        }
+
         if ($model->is_successful) {
             throw new BadRequestHttpException('Cannot update the status of a backup that is already marked as completed.');
         }