remotes

config/default/terractl

@@ -12,3 +12,8 @@
 
 # Seconds to wait for a server to save and exit on stop (keep below 90)
 #TERRARIA_STOP_TIMEOUT=80
+
+# Where terractld (terractl daemon) listens for other hosts: an address and/or
+# port. Default: all addresses, port 7776. After changing it:
+#   sudo systemctl restart terractld
+#TERRACTL_LISTEN=10.0.10.77:7776

config/polkit/terractl.rules

@@ -0,0 +1,23 @@
+// Members of the 'terraria' group may start, stop and restart Terraria servers
+// (terraria@<name>.service) without sudo. Nothing else: enable/disable and all
+// other units still need root.
+//
+// Starting a name that has no instance yet creates a vanilla instance with
+// default settings, as it does for root.
+//
+// Needs polkit 0.106 or newer (JavaScript rules); Ubuntu 22.04's 0.105 ignores it.
+polkit.addRule(function(action, subject) {
+    if (action.id != "org.freedesktop.systemd1.manage-units" ||
+        !subject.isInGroup("terraria")) {
+        return polkit.Result.NOT_HANDLED;
+    }
+    // Same names terractl accepts (valid_name)
+    var unit = action.lookup("unit") || "";
+    var verb = action.lookup("verb") || "";
+    var verbs = ["start", "stop", "restart", "try-restart", "reset-failed"];
+    if (/^terraria@[A-Za-z0-9_][A-Za-z0-9_.-]*\.service$/.test(unit) &&
+        verbs.indexOf(verb) >= 0) {
+        return polkit.Result.YES;
+    }
+    return polkit.Result.NOT_HANDLED;
+});