gentoo-overlay/games-simulation/openttd/files/openttd.initd-r3

#!/sbin/openrc-run
# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License, v2 or later

description="OpenTTD dedicated game server"
dtach_tmpfile="$(mktemp -u)"
name="OpenTTD dedicated game server"
openttd_command="/usr/bin/openttd"
pidfile="/run/${SVCNAME}.pid"

description_attach="Attaches to the session (interactive console) of the OpenTTD game server"
extra_started_commands="attach"

command="/usr/bin/dtach"
command_args="-N ${dtach_tmpfile} ${openttd_command} -D ${openttd_opts}"
command_background="true"
command_group="openttd"
command_user="openttd"

depend() {
        need net
}

attach() {
        pidnumber="$(cat ${pidfile})"
        dtach_tmpfile="$(cat /proc/${pidnumber}/cmdline | tr '\0' ' ' | awk '{print $3}')"

        if [ -S "${dtach_tmpfile}" ]; then
                eval "${command}" -a "${dtach_tmpfile}" "${dtach_opts}"
        else
                eerror "The determined socket file for dtach could not be found!"
                eerror "Did the process crash?"
        fi
}