From 98d4327c49a937195a182e7e650309037a25f957 Mon Sep 17 00:00:00 2001
From: Joseph Nuthalapati <njoseph@riseup.net>
Date: Wed, 2 Jul 2025 10:56:57 +0530
Subject: [PATCH] tiddlywiki: Avoid "412: Precondition failed" error

Apache sends an instruction to the browser to not cache the TiddlyWiki file at
all. This forces the browser to fetch the new version after each write avoiding
the case "file changed on server".

Signed-off-by: Joseph Nuthalapati <njoseph@riseup.net>
[sunil: Drop no-cache and must-revalidate directives as they are redundant]
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: Sunil Mohan Adapa <sunil@medhas.org>
---
 .../etc/apache2/conf-available/tiddlywiki-freedombox.conf    | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/plinth/modules/tiddlywiki/data/usr/share/freedombox/etc/apache2/conf-available/tiddlywiki-freedombox.conf b/plinth/modules/tiddlywiki/data/usr/share/freedombox/etc/apache2/conf-available/tiddlywiki-freedombox.conf
index f968db2c1..a69f78417 100644
--- a/plinth/modules/tiddlywiki/data/usr/share/freedombox/etc/apache2/conf-available/tiddlywiki-freedombox.conf
+++ b/plinth/modules/tiddlywiki/data/usr/share/freedombox/etc/apache2/conf-available/tiddlywiki-freedombox.conf
@@ -10,6 +10,11 @@ Alias /tiddlywiki /var/lib/tiddlywiki
     <IfModule mod_auth_pubtkt.c>
         TKTAuthToken "admin" "wiki"
     </IfModule>
+
+    # Disable caching
+    <IfModule mod_headers.c>
+        Header set Cache-Control "no-store"
+    </IfModule>
 </Location>
 
 <Directory /var/lib/tiddlywiki>