From acda73926d11b140c5499b932790aa5c0186c496 Mon Sep 17 00:00:00 2001
From: DCsunset <DCsunset@protonmail.com>
Date: Mon, 14 Oct 2024 13:28:12 +0000
Subject: [PATCH] nixos/murmur: support setting user and group for service

---
 nixos/modules/services/networking/murmur.nix | 30 ++++++++++++++++----
 1 file changed, 24 insertions(+), 6 deletions(-)

diff --git a/nixos/modules/services/networking/murmur.nix b/nixos/modules/services/networking/murmur.nix
index 3834dd5e4c45f..9e346d3384fa3 100644
--- a/nixos/modules/services/networking/murmur.nix
+++ b/nixos/modules/services/networking/murmur.nix
@@ -69,6 +69,24 @@ in
         '';
       };
 
+      user = mkOption {
+        type = types.str;
+        default = "murmur";
+        description = ''
+          The name of an existing user to use to run the service.
+          If not specified, the default user will be created.
+        '';
+      };
+
+      group = mkOption {
+        type = types.str;
+        default = "murmur";
+        description = ''
+          The name of an existing group to use to run the service.
+          If not specified, the default group will be created.
+        '';
+      };
+
       stateDir = mkOption {
         type = types.path;
         default = "/var/lib/murmur";
@@ -297,14 +315,14 @@ in
   };
 
   config = mkIf cfg.enable {
-    users.users.murmur = {
+    users.users.murmur = mkIf (cfg.user == "murmur") {
       description     = "Murmur Service user";
       home            = cfg.stateDir;
       createHome      = true;
       uid             = config.ids.uids.murmur;
-      group           = "murmur";
+      group           = cfg.group;
     };
-    users.groups.murmur = {
+    users.groups.murmur = mkIf (cfg.group == "murmur") {
       gid             = config.ids.gids.murmur;
     };
 
@@ -332,8 +350,8 @@ in
         Restart = "always";
         RuntimeDirectory = "murmur";
         RuntimeDirectoryMode = "0700";
-        User = "murmur";
-        Group = "murmur";
+        User = cfg.user;
+        Group = cfg.group;
 
         # service hardening
         AmbientCapabilities = "CAP_NET_BIND_SERVICE";
@@ -370,7 +388,7 @@ in
           "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
           "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
         <busconfig>
-          <policy user="murmur">
+          <policy user="${cfg.user}">
             <allow own="net.sourceforge.mumble.murmur"/>
           </policy>