gentoo-overlay/net-vpn/nstx/files/nstxcd.init

#!/sbin/openrc-run
# Copyright 1999-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# (Written  by Phillip Berndt <phillip.berndt at gmail dot com>)
# (Modified by Steven Brudenell <steven dot brudenell at gmail>)

depend() {
    local iface

    for iface in ${NEED_INTERFACES} ; do
        need net.${iface}
    done

    # If the user set TUNTAP_INTERFACE, they probably have a net script
    # configuring that interface. nstxcd is responsible for actually creating
    # the stupid thing, so we need to run before the config.
    if [ ! -z ${TUNTAP_INTERFACE} ] ; then
        if [ -x /etc/init.d/net.${TUNTAP_INTERFACE} ] ; then 
            before net.${TUNTAP_INTERFACE}
        fi
    fi
}

loadtun() {
	if [ ! -e /dev/net/tun ]
	then
		ebegin "Loading TUN/TAP kernel module"
		modprobe -q tun
		eend $?
	fi

	if [ ! -e /dev/net/tun ]
	then
		eend 1 "Failed to load TUN driver! (did you compile your kernel with TUN/TAP support?)"
		return 1
	fi

	return 0
}

checkconfig() {
	if [ -z "${DOMAIN}" ] ; then
        eerror "DOMAIN must be set"
        return 1
    fi

    [ -z "${TUNTAP_INTERFACE}" ] || NSTXCD_OPTS="${NSTXCD_OPTS} -I ${TUNTAP_INTERFACE}"
    [ -z "${TUNTAP_DEVICE}" ]    || NSTXCD_OPTS="${NSTXCD_OPTS} -d ${TUNTAP_DEVICE}"

    case "${MODE}" in
    TUN)
        NSTXCD_OPTS="${NSTXCD_OPTS} -t"
        ;;
    TAP)
        NSTXCD_OPTS="${NSTXCD_OPTS} -T"
        ;;
    *)
        eerror "MODE must be either TUN or TAP"
        return 1
        ;;
    esac

    if [ -z "${DNS_SERVER}" ] ; then
        DNS_SERVER=`awk '/^nameserver/{ print $2; exit; }' /etc/resolv.conf`

        if [ -z "${DNS_SERVER}" ] ; then
            eerror "DNS_SERVER not set, and couldn't determine a nameserver from /etc/resolv.conf"
            return 1
        fi
		export DNS_SERVER
    fi

    return 0
}

start() {
    checkconfig || return 1

    loadtun || return 1

	ebegin "Starting nstxcd"

	start-stop-daemon \
        --start \
        --background \
        --make-pidfile \
        --exec /usr/sbin/nstxcd \
        --pidfile "/var/run/nstxcd.pid" \
        -- ${NSTXCD_OPTS} ${DOMAIN} ${DNS_SERVER}

    eend $?
}

stop() {
	ebegin "Stopping nstxcd"

	start-stop-daemon \
        --stop \
        --exec /usr/sbin/nstxcd \
        --pidfile "/var/run/nstxcd.pid"

	eend $?
}