From b33bfb5a038c47df45e5101ead2610fff50e7c63 Mon Sep 17 00:00:00 2001
From: ohfp <1813007-ohfp@users.noreply.gitlab.com>
Date: Mon, 26 Apr 2021 11:43:42 +0200
Subject: [PATCH] Allow overriding prefs

This commit would allow overriding prefs
(locked or otherwise) with a user accessible file even
on sandboxed/restricted releases (like AppImage or Flatpak).

This works because the last specific pref value that is parsed
during startup is the one that gets actually applied; this way
an empty / non existing overrides file will not have any effect,
and only prefs changed in this file will be changed, while other
prefs from the `librewolf.cfg` will still be applied.

The difference to a `user.js` is that at this stage / with this
file, even locked prefs can still be modified.

Should we desire to have some prefs _really_ locked down (which we
do not want to be changeable with this override method), we could
just place them after the changes from this MR - so they would be
parsed after those defined in the overrides file and could override
pref changes made there.

Somewhat related to #45, #27; should partially fix #8 and basically
mitigate the recurring issues of users unable to edit some locked
settings when using a more restricted release variant.

Should probably be added to the docs, once merged.
---
 librewolf.cfg | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/librewolf.cfg b/librewolf.cfg
index b9a337e..645c6e0 100644
--- a/librewolf.cfg
+++ b/librewolf.cfg
@@ -2772,3 +2772,11 @@ defaultPref("devtools.selfxss.count", 0);
 // enable HTTPS only mode by default
 defaultPref("dom.security.https_only_mode", true);
 defaultPref("dom.security.https_only_mode_ever_enabled", true);
+
+// allow settings to be overriden with a file at `~/.librewolf/librewolf.overrides.cfg`
+// or `~/.var/app/io.gitlab.librewolf-community/.librewolf/librewolf.overrides.cfg` (Flatpak).
+// not yet verified to work on Windows and MacOS releases
+let home_directory = getenv("HOME");
+if (home_directory) {
+  pref("autoadmin.global_config_url", `file://${home_directory}/.librewolf/librewolf.overrides.cfg`);
+}