404-guard snapshot/backup paths and broaden .gitignore

2764ec6a04f7b535d6c414561b1f363f633e2895 · 2026-05-19 15:20:47 -0700 · Steve Abrams

DW fleet standing rule — .bak / .bak.* / .pre-* / .orig must never serve
from the static root. public/ is currently empty so no exposure today,
but the middleware locks the door before anything accidentally lands
there. .gitignore now also blocks committing those snapshot extensions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Files touched

M .gitignore
M server.js

Diff

commit 2764ec6a04f7b535d6c414561b1f363f633e2895
Author: Steve Abrams <steve@designerwallcoverings.com>
Date:   Tue May 19 15:20:47 2026 -0700

    404-guard snapshot/backup paths and broaden .gitignore
    
    DW fleet standing rule — .bak / .bak.* / .pre-* / .orig must never serve
    from the static root. public/ is currently empty so no exposure today,
    but the middleware locks the door before anything accidentally lands
    there. .gitignore now also blocks committing those snapshot extensions.
    
    Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 .gitignore | 6 ++++++
 server.js  | 8 ++++++++
 2 files changed, 14 insertions(+)

diff --git a/.gitignore b/.gitignore
index 4a0b3ea..5b228e9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,9 @@ tmp/
 dist/
 build/
 .next/
+
+# never commit snapshot / backup / pre-edit dumps — DW fleet rule
+*.bak
+*.bak.*
+*.pre-*
+*.orig
diff --git a/server.js b/server.js
index 2b8b6ea..de3be0b 100644
--- a/server.js
+++ b/server.js
@@ -36,6 +36,14 @@ app.use((_req, res, next) => {
   next();
 });
 
+// Snapshot/backup files should never be reachable from any static path.
+// Even though public/ is currently empty, sweep up any future
+// `.bak` / `.bak.*` / `.pre-*` / `.orig` filenames before they can be
+// served. Standing rule across the DW fleet.
+app.use((req, res, next) => {
+  if (/\.(bak|orig)(\.|$)|\.pre-/i.test(req.path)) return res.status(404).end();
+  next();
+});
 app.use('/static', express.static(path.join(__dirname, 'public'), { maxAge: '7d' }));
 
 // ---------------------------------------------------------------------------

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