From d140a02a7d41f82921d0752c17f7f688d6dcc2dd Mon Sep 17 00:00:00 2001
From: Sandu Rajapakse <sandu@rajapakse.me>
Date: Thu, 5 Jan 2023 18:14:48 -0500
Subject: [PATCH] Prevent overwriting of uploaded pasted images

---
 server/controllers/upload.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/server/controllers/upload.js b/server/controllers/upload.js
index 3da4dcac..b7695c09 100644
--- a/server/controllers/upload.js
+++ b/server/controllers/upload.js
@@ -78,6 +78,11 @@ router.post('/u', (req, res, next) => {
   // Sanitize filename
   fileMeta.originalname = sanitize(fileMeta.originalname.toLowerCase().replace(/[\s,;#]+/g, '_'))
 
+  // Prevent overwriting of pasted images
+  if (fileMeta.originalname == 'image.png') {
+    fileMeta.originalname = 'image_' + Date.now() + '.png'
+  }
+
   // Check if user can upload at path
   const assetPath = (folderId) ? hierarchy.map(h => h.slug).join('/') + `/${fileMeta.originalname}` : fileMeta.originalname
   if (!WIKI.auth.checkAccess(req.user, ['write:assets'], { path: assetPath })) {