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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.net>
;;; Copyright © 2022 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu services games)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu packages admin)
#:use-module (gnu packages games)
#:use-module (gnu system shadow)
#:use-module ((gnu system file-systems) #:select (file-system-mapping))
#:use-module (gnu build linux-container)
#:autoload (guix least-authority) (least-authority-wrapper)
#:use-module (guix gexp)
#:use-module (guix modules)
#:use-module (guix records)
#:use-module (ice-9 match)
#:export (wesnothd-configuration
wesnothd-configuration?
wesnothd-service-type))
;;;
;;; The Battle for Wesnoth server
;;;
(define-record-type* <wesnothd-configuration>
wesnothd-configuration make-wesnothd-configuration wesnothd-configuration?
(package wesnothd-configuration-package
(default wesnoth-server))
(port wesnothd-configuration-port
(default 15000)))
(define %wesnothd-accounts
(list (user-account
(name "wesnothd")
(group "wesnothd")
(system? #t)
(comment "Wesnoth daemon user")
(home-directory "/var/empty")
(shell (file-append shadow "/sbin/nologin")))
(user-group
(name "wesnothd")
(system? #t))))
(define wesnothd-shepherd-service
(match-lambda
(($ <wesnothd-configuration> package port)
(let ((wesnothd (least-authority-wrapper
(file-append package "/bin/wesnothd")
#:name "wesnothd"
#:mappings (list (file-system-mapping
(source "/var/run/wesnothd")
(target source)
(writable? #t)))
#:namespaces (delq 'net %namespaces))))
(shepherd-service
(documentation "The Battle for Wesnoth server")
(provision '(wesnoth-daemon))
(requirement '(networking))
(start #~(make-forkexec-constructor
(list #$wesnothd "-p" #$(number->string port))
#:user "wesnothd" #:group "wesnothd"))
(stop #~(make-kill-destructor)))))))
(define wesnothd-activation
(with-imported-modules '((guix build utils))
#~(begin
(use-modules (guix build utils))
(let* ((user (getpw "wesnothd"))
(directory "/var/run/wesnothd"))
;; wesnothd creates a Unix-domain socket in DIRECTORY.
(mkdir-p directory)
(chown directory (passwd:uid user) (passwd:gid user))))))
(define wesnothd-service-type
(service-type
(name 'wesnothd)
(description
"Run The Battle for Wesnoth server @command{wesnothd}.")
(extensions
(list (service-extension account-service-type
(const %wesnothd-accounts))
(service-extension activation-service-type
(const wesnothd-activation))
(service-extension shepherd-root-service-type
(compose list wesnothd-shepherd-service))))
(default-value (wesnothd-configuration))))
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