1 files changed, 119 insertions, 0 deletions
diff --git a/nixos/modules/services/games/teeworlds.nix b/nixos/modules/services/games/teeworlds.nix
new file mode 100644
index 00000000000..babf989c98c
--- /dev/null
+++ b/nixos/modules/services/games/teeworlds.nix
@@ -0,0 +1,119 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.teeworlds;
+  register = cfg.register;
+
+  teeworldsConf = pkgs.writeText "teeworlds.cfg" ''
+    sv_port ${toString cfg.port}
+    sv_register ${if cfg.register then "1" else "0"}
+    ${optionalString (cfg.name != null) "sv_name ${cfg.name}"}
+    ${optionalString (cfg.motd != null) "sv_motd ${cfg.motd}"}
+    ${optionalString (cfg.password != null) "password ${cfg.password}"}
+    ${optionalString (cfg.rconPassword != null) "sv_rcon_password ${cfg.rconPassword}"}
+    ${concatStringsSep "\n" cfg.extraOptions}
+  '';
+
+in
+{
+  options = {
+    services.teeworlds = {
+      enable = mkEnableOption "Teeworlds Server";
+
+      openPorts = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Whether to open firewall ports for Teeworlds";
+      };
+
+      name = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = ''
+          Name of the server. Defaults to 'unnamed server'.
+        '';
+      };
+
+      register = mkOption {
+        type = types.bool;
+        example = true;
+        default = false;
+        description = ''
+          Whether the server registers as public server in the global server list. This is disabled by default because of privacy.
+        '';
+      };
+
+      motd = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = ''
+          Set the server message of the day text.
+        '';
+      };
+
+      password = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = ''
+          Password to connect to the server.
+        '';
+      };
+
+      rconPassword = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = ''
+          Password to access the remote console. If not set, a randomly generated one is displayed in the server log.
+        '';
+      };
+
+      port = mkOption {
+        type = types.int;
+        default = 8303;
+        description = ''
+          Port the server will listen on.
+        '';
+      };
+
+      extraOptions = mkOption {
+        type = types.listOf types.str;
+        default = [];
+        description = ''
+          Extra configuration lines for the <filename>teeworlds.cfg</filename>. See <link xlink:href="https://www.teeworlds.com/?page=docs&amp;wiki=server_settings">Teeworlds Documentation</link>.
+        '';
+        example = [ "sv_map dm1" "sv_gametype dm" ];
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    networking.firewall = mkIf cfg.openPorts {
+      allowedUDPPorts = [ cfg.port ];
+    };
+
+    systemd.services.teeworlds = {
+      description = "Teeworlds Server";
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network.target" ];
+
+      serviceConfig = {
+        DynamicUser = true;
+        ExecStart = "${pkgs.teeworlds}/bin/teeworlds_srv -f ${teeworldsConf}";
+
+        # Hardening
+        CapabilityBoundingSet = false;
+        PrivateDevices = true;
+        PrivateUsers = true;
+        ProtectHome = true;
+        ProtectKernelLogs = true;
+        ProtectKernelModules = true;
+        ProtectKernelTunables = true;
+        RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
+        RestrictNamespaces = true;
+        SystemCallArchitectures = "native";
+      };
+    };
+  };
+}