{ config, pkgs, lib, ... }: let cfg = config.services.ddclient; boolToStr = bool: if bool then "yes" else "no"; dataDir = "/var/lib/ddclient"; StateDirectory = builtins.baseNameOf dataDir; RuntimeDirectory = StateDirectory; configFile' = pkgs.writeText "ddclient.conf" '' # This file can be used as a template for configFile or is automatically generated by Nix options. cache=${dataDir}/ddclient.cache foreground=YES use=${cfg.use} login=${cfg.username} password= protocol=${cfg.protocol} ${lib.optionalString (cfg.script != "") "script=${cfg.script}"} ${lib.optionalString (cfg.server != "") "server=${cfg.server}"} ${lib.optionalString (cfg.zone != "") "zone=${cfg.zone}"} ssl=${boolToStr cfg.ssl} wildcard=YES ipv6=${boolToStr cfg.ipv6} quiet=${boolToStr cfg.quiet} verbose=${boolToStr cfg.verbose} ${cfg.extraConfig} ${lib.concatStringsSep "," cfg.domains} ''; configFile = if (cfg.configFile != null) then cfg.configFile else configFile'; preStart = '' install ${configFile} /run/${RuntimeDirectory}/ddclient.conf ${lib.optionalString (cfg.configFile == null) (if (cfg.passwordFile != null) then '' password=$(head -n 1 ${cfg.passwordFile}) sed -i "s/^password=$/password=$password/" /run/${RuntimeDirectory}/ddclient.conf '' else '' sed -i '/^password=$/d' /run/${RuntimeDirectory}/ddclient.conf '')} ''; in with lib; { imports = [ (mkChangedOptionModule [ "services" "ddclient" "domain" ] [ "services" "ddclient" "domains" ] (config: let value = getAttrFromPath [ "services" "ddclient" "domain" ] config; in if value != "" then [ value ] else [])) (mkRemovedOptionModule [ "services" "ddclient" "homeDir" ] "") (mkRemovedOptionModule [ "services" "ddclient" "password" ] "Use services.ddclient.passwordFile instead.") ]; ###### interface options = { services.ddclient = with lib.types; { enable = mkOption { default = false; type = bool; description = '' Whether to synchronise your machine's IP address with a dynamic DNS provider (e.g. dyndns.org). ''; }; package = mkOption { type = package; default = pkgs.ddclient; defaultText = "pkgs.ddclient"; description = '' The ddclient executable package run by the service. ''; }; domains = mkOption { default = [ "" ]; type = listOf str; description = '' Domain name(s) to synchronize. ''; }; username = mkOption { default = ""; type = str; description = '' User name. ''; }; passwordFile = mkOption { default = null; type = nullOr str; description = '' A file containing the password. ''; }; interval = mkOption { default = "10min"; type = str; description = '' The interval at which to run the check and update. See man 7 systemd.time for the format. ''; }; configFile = mkOption { default = null; type = nullOr path; description = '' Path to configuration file. When set this overrides the generated configuration from module options. ''; example = "/root/nixos/secrets/ddclient.conf"; }; protocol = mkOption { default = "dyndns2"; type = str; description = '' Protocol to use with dynamic DNS provider (see https://sourceforge.net/p/ddclient/wiki/protocols). ''; }; server = mkOption { default = ""; type = str; description = '' Server address. ''; }; ssl = mkOption { default = true; type = bool; description = '' Whether to use SSL/TLS to connect to dynamic DNS provider. ''; }; ipv6 = mkOption { default = false; type = bool; description = '' Whether to use IPv6. ''; }; quiet = mkOption { default = false; type = bool; description = '' Print no messages for unnecessary updates. ''; }; script = mkOption { default = ""; type = str; description = '' script as required by some providers. ''; }; use = mkOption { default = "web, web=checkip.dyndns.com/, web-skip='Current IP Address: '"; type = str; description = '' Method to determine the IP address to send to the dynamic DNS provider. ''; }; verbose = mkOption { default = true; type = bool; description = '' Print verbose information. ''; }; zone = mkOption { default = ""; type = str; description = '' zone as required by some providers. ''; }; extraConfig = mkOption { default = ""; type = lines; description = '' Extra configuration. Contents will be added verbatim to the configuration file. ''; }; }; }; ###### implementation config = mkIf config.services.ddclient.enable { systemd.services.ddclient = { description = "Dynamic DNS Client"; wantedBy = [ "multi-user.target" ]; after = [ "network.target" ]; restartTriggers = optional (cfg.configFile != null) cfg.configFile; serviceConfig = { DynamicUser = true; RuntimeDirectoryMode = "0700"; inherit RuntimeDirectory; inherit StateDirectory; Type = "oneshot"; ExecStartPre = "!${pkgs.writeShellScript "ddclient-prestart" preStart}"; ExecStart = "${lib.getBin cfg.package}/bin/ddclient -file /run/${RuntimeDirectory}/ddclient.conf"; }; }; systemd.timers.ddclient = { description = "Run ddclient"; wantedBy = [ "timers.target" ]; timerConfig = { OnBootSec = cfg.interval; OnUnitInactiveSec = cfg.interval; }; }; }; }