From 8bb29870c417d1dd2ab69f6f4fd54ef80ec444ff Mon Sep 17 00:00:00 2001
From: Leo Izen <leo.izen@gmail.com>
Date: Mon, 18 Oct 2021 19:06:02 -0400
Subject: [PATCH] src/thumbnailer_shared.lua: hash remote URLs even if short

This commit causes all remote/device URLs to be hashed so
URLs with filenames like watch or view.php will not
collide.
---
 src/thumbnailer_shared.lua | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/thumbnailer_shared.lua b/src/thumbnailer_shared.lua
index b0e5dfd..885c8e5 100644
--- a/src/thumbnailer_shared.lua
+++ b/src/thumbnailer_shared.lua
@@ -129,8 +129,12 @@ function Thumbnailer:get_thumbnail_template()
     end
 
     filename = filename:gsub('[^a-zA-Z0-9_.%-\' ]', '')
-    -- Hash overly long filenames (most likely URLs)
-    if #filename > thumbnailer_options.hash_filename_length then
+
+    -- Hash remote URLs
+    if filesize == 0 then
+        filename = sha1.hex(file_path)
+    -- Hash overly long filenames
+    elseif #filename > thumbnailer_options.hash_filename_length then
         filename = sha1.hex(filename)
     end