From a9b15fe57aee536fe9f3728bdab4af784bc28ce7 Mon Sep 17 00:00:00 2001
From: Patric Stout <truebrain@openttd.org>
Date: Sun, 22 Nov 2020 14:39:42 +0100
Subject: [PATCH] Fix: return normal error pages when people visit /NNN

---
 truewiki/web_routes.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/truewiki/web_routes.py b/truewiki/web_routes.py
index b9f1bdf..6419db6 100644
--- a/truewiki/web_routes.py
+++ b/truewiki/web_routes.py
@@ -40,6 +40,11 @@ async def wrapper(*args, **kwargs):
 
 
 def _validate_page(page: str) -> None:
+    # If there is no "/" in the page name, it is a page in the root-folder,
+    # and that means we don't have to check for directory traversal.
+    if "/" not in page:
+        return
+
     filename = os.path.basename(page)
     path = os.path.normpath(os.path.dirname(page))
     fullpath = f"{path}/{filename}"