nixpkgs/nixos/modules/services/games/terraria.nix
2022-12-08 17:52:52 +01:00

170 lines
5.0 KiB
Nix

{ config, lib, options, pkgs, ... }:
with lib;
let
cfg = config.services.terraria;
opt = options.services.terraria;
worldSizeMap = { small = 1; medium = 2; large = 3; };
valFlag = name: val: optionalString (val != null) "-${name} \"${escape ["\\" "\""] (toString val)}\"";
boolFlag = name: val: optionalString val "-${name}";
flags = [
(valFlag "port" cfg.port)
(valFlag "maxPlayers" cfg.maxPlayers)
(valFlag "password" cfg.password)
(valFlag "motd" cfg.messageOfTheDay)
(valFlag "world" cfg.worldPath)
(valFlag "autocreate" (builtins.getAttr cfg.autoCreatedWorldSize worldSizeMap))
(valFlag "banlist" cfg.banListPath)
(boolFlag "secure" cfg.secure)
(boolFlag "noupnp" cfg.noUPnP)
];
stopScript = pkgs.writeScript "terraria-stop" ''
#!${pkgs.runtimeShell}
if ! [ -d "/proc/$1" ]; then
exit 0
fi
${getBin pkgs.tmux}/bin/tmux -S ${cfg.dataDir}/terraria.sock send-keys Enter exit Enter
${getBin pkgs.coreutils}/bin/tail --pid="$1" -f /dev/null
'';
in
{
options = {
services.terraria = {
enable = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc ''
If enabled, starts a Terraria server. The server can be connected to via `tmux -S ''${config.${opt.dataDir}}/terraria.sock attach`
for administration by users who are a part of the `terraria` group (use `C-b d` shortcut to detach again).
'';
};
port = mkOption {
type = types.port;
default = 7777;
description = lib.mdDoc ''
Specifies the port to listen on.
'';
};
maxPlayers = mkOption {
type = types.ints.u8;
default = 255;
description = lib.mdDoc ''
Sets the max number of players (between 1 and 255).
'';
};
password = mkOption {
type = types.nullOr types.str;
default = null;
description = lib.mdDoc ''
Sets the server password. Leave `null` for no password.
'';
};
messageOfTheDay = mkOption {
type = types.nullOr types.str;
default = null;
description = lib.mdDoc ''
Set the server message of the day text.
'';
};
worldPath = mkOption {
type = types.nullOr types.path;
default = null;
description = lib.mdDoc ''
The path to the world file (`.wld`) which should be loaded.
If no world exists at this path, one will be created with the size
specified by `autoCreatedWorldSize`.
'';
};
autoCreatedWorldSize = mkOption {
type = types.enum [ "small" "medium" "large" ];
default = "medium";
description = lib.mdDoc ''
Specifies the size of the auto-created world if `worldPath` does not
point to an existing world.
'';
};
banListPath = mkOption {
type = types.nullOr types.path;
default = null;
description = lib.mdDoc ''
The path to the ban list.
'';
};
secure = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc "Adds additional cheat protection to the server.";
};
noUPnP = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc "Disables automatic Universal Plug and Play.";
};
openFirewall = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc "Whether to open ports in the firewall";
};
dataDir = mkOption {
type = types.str;
default = "/var/lib/terraria";
example = "/srv/terraria";
description = lib.mdDoc "Path to variable state data directory for terraria.";
};
};
};
config = mkIf cfg.enable {
users.users.terraria = {
description = "Terraria server service user";
group = "terraria";
home = cfg.dataDir;
createHome = true;
uid = config.ids.uids.terraria;
};
users.groups.terraria = {
gid = config.ids.gids.terraria;
};
systemd.services.terraria = {
description = "Terraria Server Service";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig = {
User = "terraria";
Type = "forking";
GuessMainPID = true;
ExecStart = "${getBin pkgs.tmux}/bin/tmux -S ${cfg.dataDir}/terraria.sock new -d ${pkgs.terraria-server}/bin/TerrariaServer ${concatStringsSep " " flags}";
ExecStop = "${stopScript} $MAINPID";
};
postStart = ''
${pkgs.coreutils}/bin/chmod 660 ${cfg.dataDir}/terraria.sock
${pkgs.coreutils}/bin/chgrp terraria ${cfg.dataDir}/terraria.sock
'';
};
networking.firewall = mkIf cfg.openFirewall {
allowedTCPPorts = [ cfg.port ];
allowedUDPPorts = [ cfg.port ];
};
};
}