97 lines
3.1 KiB
Nix
97 lines
3.1 KiB
Nix
self: { config, lib, pkgs, ... }:
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let
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cfg = config.services.guildhall;
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database = "/var/lib/guildhall/guildhall.sqlite3";
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hardening = {
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User = "guildhall";
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Group = "guildhall";
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StateDirectory = "guildhall";
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StateDirectoryMode = "0700";
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UMask = "0077";
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NoNewPrivileges = true;
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PrivateTmp = true;
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PrivateDevices = true;
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ProtectSystem = "strict";
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ProtectHome = true;
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ProtectKernelTunables = true;
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ProtectKernelModules = true;
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ProtectControlGroups = true;
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RestrictAddressFamilies = [ "AF_UNIX" "AF_INET" "AF_INET6" ];
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};
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in
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{
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options.services.guildhall = {
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enable = lib.mkEnableOption "the Guildhall co-op idle game";
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package = lib.mkOption {
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type = lib.types.package;
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default = self.packages.${pkgs.stdenv.hostPlatform.system}.default;
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defaultText = lib.literalExpression "guildhall.packages.${pkgs.stdenv.hostPlatform.system}.default";
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description = "The guildhall package to run.";
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};
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port = lib.mkOption {
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type = lib.types.port;
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default = 8098;
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description = "Loopback TCP port used by the game.";
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};
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userHeader = lib.mkOption {
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type = lib.types.str;
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default = "Remote-User";
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description = "Request header carrying the signed-in user, set by the authenticating proxy.";
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};
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backup = {
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directory = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = null;
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description = "Directory for nightly world snapshots; null disables backups.";
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};
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keep = lib.mkOption {
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type = lib.types.ints.positive;
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default = 30;
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description = "Number of nightly snapshots to keep.";
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};
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};
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};
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config = lib.mkIf cfg.enable (lib.mkMerge [
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{
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users.users.guildhall = {
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isSystemUser = true;
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group = "guildhall";
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description = "Guildhall service user";
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};
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users.groups.guildhall = { };
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systemd.services.guildhall = {
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description = "Guildhall co-op idle game";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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serviceConfig = hardening // {
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ExecStart = "${cfg.package}/bin/guildhall --host 127.0.0.1 --port ${toString cfg.port} --db ${database} --user-header ${lib.escapeShellArg cfg.userHeader}";
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Restart = "on-failure";
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RestartSec = 3;
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};
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};
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}
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(lib.mkIf (cfg.backup.directory != null) {
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systemd.tmpfiles.rules = [ "d ${cfg.backup.directory} 0700 guildhall guildhall -" ];
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systemd.services.guildhall-backup = {
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description = "Snapshot the Guildhall world";
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unitConfig.RequiresMountsFor = [ cfg.backup.directory ];
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serviceConfig = hardening // {
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Type = "oneshot";
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ExecStart = "${cfg.package}/bin/guildhall --db ${database} --backup-to ${cfg.backup.directory} --keep ${toString cfg.backup.keep}";
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ReadWritePaths = [ cfg.backup.directory ];
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};
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};
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systemd.timers.guildhall-backup = {
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wantedBy = [ "timers.target" ];
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timerConfig = {
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OnCalendar = "*-*-* 03:20:00";
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Persistent = true;
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};
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};
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})
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]);
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}
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