From 5eb821ab1bea5efd2f845115b3dbc31f4f475ca9 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Wed, 18 Jan 2023 17:13:30 +0100
Subject: tv.systemd.services.*.operators: init

---
 tv/3modules/default.nix |  1 +
 tv/3modules/systemd.nix | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 tv/3modules/systemd.nix

(limited to 'tv')

diff --git a/tv/3modules/default.nix b/tv/3modules/default.nix
index ea3efbcc..c49f1582 100644
--- a/tv/3modules/default.nix
+++ b/tv/3modules/default.nix
@@ -10,6 +10,7 @@
     ./iptables.nix
     ./lidControl.nix
     ./org.freedesktop.machine1.host-shell.nix
+    ./systemd.nix
     ./slock.nix
     ./x0vncserver.nix
     ./Xresources.nix
diff --git a/tv/3modules/systemd.nix b/tv/3modules/systemd.nix
new file mode 100644
index 00000000..bbbab063
--- /dev/null
+++ b/tv/3modules/systemd.nix
@@ -0,0 +1,46 @@
+with import ./lib;
+{ config, ... }: let
+  normalUsers = filterAttrs (_: getAttr "isNormalUser") config.users.users;
+in {
+  options = {
+    tv.systemd.services = mkOption {
+      type = types.attrsOf (types.submodule (self: {
+        options = {
+          operators = mkOption {
+            type = with types; listOf (enum (attrNames normalUsers));
+            default = [];
+          };
+        };
+      }));
+    };
+  };
+  config = {
+    security.polkit.extraConfig = let
+      access =
+        mapAttrs'
+          (name: cfg:
+            nameValuePair "${name}.service"
+                          (genAttrs cfg.operators (const true))
+          )
+          config.tv.systemd.services;
+    in optionalString (access != {}) /* js */ ''
+      polkit.addRule(function () {
+        const access = ${lib.toJSON access};
+        return function (action, subject) {
+          if (action.id === "org.freedesktop.systemd1.manage-units") {
+            const unit = action.lookup("unit");
+            if (
+              (access[unit]||{})[subject.user] ||
+              (
+                unit.includes("@") &&
+                (access[unit.replace(/@[^.]+/, "@")]||{})[subject.user]
+              )
+            ) {
+              return polkit.Result.YES;
+            }
+          }
+        }
+      }());
+    '';
+  };
+}
-- 
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