conf.d/net

# cat /etc/conf.d/net

L2TP_BACKEND="xl2tpd"
L2TP_TIMEOUT=20

DEPEND="lan"
L2TP="ppp0"
ROUTES="
    195.14.50.0/27
    78.106.0.0/15
    224.0.0.0/4
"

config_lan="dhclient"
dhclient_lan="-nw"
config_ppp0="null"
#mtu_lan=1500


#config_lan="dhcp"

modules_wifi="!iwconfig !wpa_supplicant"
config_wifi="192.168.2.1 netmask 255.255.255.0 broadcast 192.168.2.255"

depend_ppp0() {
    need net.${DEPEND}
}

check_module () {
    if ! [[ -f /proc/net/pppol2tp ]]; then
        ebegin "Loading l2tp module"
                # try both new and old module names
                modprobe l2tp_ppp 2>/dev/null || modprobe pppol2tp 2>/dev/null
        eend $?.
    fi
}

checkconfig() {
    if [ "${L2TP_BACKEND}" = "xl2tpd" ]; then
        if [[ ! -f /etc/xl2tpd/xl2tpd.conf ]] ; then
            eerror "Missing /etc/xl2tpd/xl2tpd.conf configuration file!"
            eerror "Example configuration file could be found in doc directory."
            return 1
        fi

        if [ ! -d /var/run/xl2tpd ] ; then
            checkpath -d -m 755 /var/run/xl2tpd
        fi
    fi

    return 0
}

preup() {
    if [ -z "${L2TP_BACKEND}" ]; then
        L2TP_BACKEND="xl2tpd"
    fi

    checkconfig || return 1

    if [ x"${IFACE}" = x"${L2TP}" ]; then
        if [ "${L2TP_BACKEND}" = "xl2tpd" ]; then
            start-stop-daemon --start --quiet --exec /usr/sbin/xl2tpd
        else
            check_module
            start-stop-daemon --start --quiet --exec /usr/sbin/openl2tpd
        fi

        iface_timer=0
        while [ $iface_timer -lt $L2TP_TIMEOUT ]; do
            if [ -n "$(ifconfig | grep ${IFACE})" ]; then
                eend 0
                return 0
            else
                if [ ${iface_timer} -eq 0 ]; then
                    einfo "Waiting for l2tp..."
                fi
                sleep 1
                ((iface_timer++))
            fi
        done

        cleanup_l2tp
        eend 1
        return 1
    fi

    return 0
}

postup() {
    if [ x"${IFACE}" = x"${L2TP}" ]; then
        gw=`route -n | awk "{ if (\\$1 == \"0.0.0.0\" && \\$8 == \"${DEPEND}\") print \\$2 }" | perl -e 'print split("\n", <>, 1)'`
        vpn=`ifconfig | grep -A1 ${IFACE} | grep -i p-t-p | awk '{ print $3 }' | sed  's/p-t-p://gi'`
        echo "TRY: route add ${vpn} gw ${gw}"
        route add ${vpn} gw ${gw}

        for i in ${ROUTES}; do
            echo "TRY: route add -net ${i} gw ${gw}"
            route add -net ${i} gw ${gw}
        done
    fi
    return 0
}

predown() {
    if [ -z "${L2TP_BACKEND}" ]; then
        L2TP_BACKEND="xl2tpd"
    fi

    if [ x"${IFACE}" = x"${L2TP}" ]; then
        gw=`route -n | awk "{ if (\\$1 == \"0.0.0.0\" && \\$8 == \"${DEPEND}\") print \\$2 }" | perl -e 'print split("\n", <>, 1)'`
        vpn=`ifconfig | grep -A1 ${IFACE} | grep -i p-t-p | awk '{ print $3 }' | sed  's/p-t-p://gi'`
#        vpn=`ifconfig | grep -A1 ${IFACE} | grep -i dest | awk '{ print $6 }'`

        echo "GW: ${gw}" > 1111;

        cleanup_l2tp
        if [ -n ${gw} ]; then
            route del ${vpn} gw ${gw}

            for i in ${ROUTES}; do
                route del -net ${i} gw ${gw}
            done
        fi

    fi
    return 0
}

cleanup_l2tp() {
        if [ "${L2TP_BACKEND}" = "xl2tpd" ]; then
            start-stop-daemon --stop --quiet --pidfile /var/run/xl2tpd.pid

            if [ -n "$(pidof xl2tpd)" ]; then
                killall -9 xl2tpd > /dev/null 2>&1
            fi

            if [ -e /var/run/xl2tpd.pid ]; then
                rm -f /var/run/xl2tpd.pid
            fi
        else
            start-stop-daemon --stop --quiet --pidfile /var/run/openl2tpd.pid

            if [ -n "$(pidof openl2tpd)" ]; then
                killall -9 openl2tpd > /dev/null 2>&1
            fi

            if [ -e /var/run/openl2tpd.pid ]; then
                rm -f /var/run/openl2tpd.pid
            fi
        fi

        killall pppd > /dev/null 2>&1
        if [ -n "$(pidof pppd)" ]; then
            killall -9 pppd > /dev/null 2>&1
        fi
}