User Permissions (User Folder, Read Only, Disable Upload) & more changes

upload.php

@@ -18,6 +18,15 @@ if (!isset($_SESSION['authenticated']) || $_SESSION['authenticated'] !== true) {
     http_response_code(401);
     exit;
 }
+$userPermissions = loadUserPermissions($username);
+$username = $_SESSION['username'] ?? '';
+if ($username) {
+    $userPermissions = loadUserPermissions($username);
+    if (isset($userPermissions['disableUpload']) && $userPermissions['disableUpload'] === true) {
+        echo json_encode(["error" => "Disabled upload users are not allowed to upload."]);
+        exit();
+    }
+}
 
 /*
  * Handle test chunk requests.