{ config, pkgs, ... }: let inherit (pkgs.lib) mkOption mkIf singleton; inherit (pkgs) ddclient; stateDir = "/var/spool/ddclient"; ddclientUser = "ddclient"; ddclientFlags = "-foreground -file ${ddclientCfg}"; ddclientCfg = pkgs.writeText "ddclient.conf" '' daemon=600 cache=${stateDir}/ddclient.cache pid=${stateDir}/ddclient.pid use=${config.services.ddclient.web} login=${config.services.ddclient.username} password=${config.services.ddclient.password} protocol=${config.services.ddclient.protocol} server=${config.services.ddclient.server} wildcard=YES ${config.services.ddclient.domain} ${config.services.ddclient.extraConfig} ''; in { ###### interface options = { services.ddclient = { enable = mkOption { default = false; description = '' Whether to synchronise your machine's IP address with a dynamic DNS provider (e.g. dyndns.org). ''; }; domain = mkOption { default = ""; description = '' Domain name to synchronize. ''; }; username = mkOption { default = ""; description = '' Username. ''; }; password = mkOption { default = "" ; description = '' Password. ''; }; protocol = mkOption { default = "dyndns2" ; description = '' Protocol to use with dynamic DNS provider. (see also, http://sourceforge.net/apps/trac/ddclient/wiki/Protocols) ''; }; server = mkOption { default = "members.dyndns.org" ; description = '' Server ''; }; extraConfig = mkOption { default = "" ; description = '' Extra configuration. Contents will be added verbatim to the configuration file. ''; }; web = mkOption { default = "web, web=checkip.dyndns.com/, web-skip='IP Address'" ; description = ""; }; }; }; ###### implementation config = mkIf config.services.ddclient.enable { environment.systemPackages = [ ddclient ]; users.extraUsers = singleton { name = ddclientUser; uid = config.ids.uids.ddclient; description = "ddclient daemon user"; home = stateDir; }; jobs.ddclient = { name = "ddclient"; startOn = "startup"; preStart = '' mkdir -m 0755 -p ${stateDir} chown ${ddclientUser} ${stateDir} ''; exec = "${ddclient}/bin/ddclient ${ddclientFlags}"; }; }; }