Add /api/client/servers/{server}/files/chmod endpoint

app/Http/Controllers/Api/Client/Servers/FileController.php

@@ -16,6 +16,7 @@ use Pterodactyl\Http\Requests\Api\Client\Servers\Files\CopyFileRequest;
 use Pterodactyl\Http\Requests\Api\Client\Servers\Files\ListFilesRequest;
 use Pterodactyl\Http\Requests\Api\Client\Servers\Files\DeleteFileRequest;
 use Pterodactyl\Http\Requests\Api\Client\Servers\Files\RenameFileRequest;
+use Pterodactyl\Http\Requests\Api\Client\Servers\Files\ChmodFilesRequest;
 use Pterodactyl\Http\Requests\Api\Client\Servers\Files\CreateFolderRequest;
 use Pterodactyl\Http\Requests\Api\Client\Servers\Files\CompressFilesRequest;
 use Pterodactyl\Http\Requests\Api\Client\Servers\Files\DecompressFilesRequest;
@@ -263,6 +264,25 @@ class FileController extends ClientApiController
         return new JsonResponse([], Response::HTTP_NO_CONTENT);
     }
 
+    /**
+     * Updates file permissions for file(s) in the given root directory.
+     *
+     * @param \Pterodactyl\Http\Requests\Api\Client\Servers\Files\ChmodFilesRequest $request
+     * @param \Pterodactyl\Models\Server $server
+     * @return \Illuminate\Http\JsonResponse
+     *
+     * @throws \Pterodactyl\Exceptions\Http\Connection\DaemonConnectionException
+     */
+    public function chmod(ChmodFilesRequest $request, Server $server): JsonResponse
+    {
+        $this->fileRepository->setServer($server)
+            ->chmodFiles(
+                $request->input('root'), $request->input('files')
+            );
+
+        return new JsonResponse([], Response::HTTP_NO_CONTENT);
+    }
+
     /**
      * Encodes a given file name & path in a format that should work for a good majority
      * of file names without too much confusing logic.

app/Http/Requests/Api/Client/Servers/Files/ChmodFilesRequest.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Pterodactyl\Http\Requests\Api\Client\Servers\Files;
+
+use Pterodactyl\Models\Permission;
+use Pterodactyl\Contracts\Http\ClientPermissionsRequest;
+use Pterodactyl\Http\Requests\Api\Client\ClientApiRequest;
+
+class ChmodFilesRequest extends ClientApiRequest implements ClientPermissionsRequest
+{
+    /**
+     * @return string
+     */
+    public function permission(): string
+    {
+        return Permission::ACTION_FILE_UPDATE;
+    }
+
+    /**
+     * @return array
+     */
+    public function rules(): array
+    {
+        return [
+            'root' => 'required|nullable|string',
+            'files' => 'required|array',
+            'files.file' => 'string',
+            'files.mode' => 'integer',
+        ];
+    }
+}