#!/bin/sh
#----------------------------------------------------------------------------
# /etc/ppp/ipv6-up - called whenever a (i)ppp connection has appeared
#
# Creation:        26.09.2009  zone42
# Last Update:     $Id$
#----------------------------------------------------------------------------

run_ipv6pre_up ()
{
    case $interface in
    ppp0)                # it's DSL, map interface
        case $tty in
        "" | eth*| br* | bond* | /dev/ttyp0 | /dev/ttyS[0-4] | /dev/ttyUSB[0-4] | /dev/capi/0 | /dev/ttyACM0 | /dev/ttyHS[0-3] | /dev/gsmmodem )
            # empty: PPPoE, eth[0-9] in_kernel, else PPTP
            interface=pppoe
            # kristov: pppoe-status cannot currently handle a dual-stack IPv4+IPv6 connection properly
            >/var/run/pppoe.up
        ;;
        esac
    ;;
    *)
        >/var/run/$interface.up
    ;;
    esac

    #
    # default route is either
    #     default via <ip> dev <dev>
    # or
    #     default          dev <dev>
    def_gateway=
    def_route=`ip -6 route show | grep ^default`
    route_dev=
    route_gw=
    if [ "$def_route" ]
    then
        regex_dev='^default\>.*\<dev\>[[:space:]]*\([^[:space:]]\+\).*'
        route_dev=$(echo "$def_route" | grep "$regex_dev" | sed -e "s/$regex_dev/\1/")
        regex_gw='^default\>.*\<via\>[[:space:]]*\([^[:space:]]\+\).*'
        route_gw=$(echo "$def_route" | grep "$regex_gw" | sed -e "s/$regex_gw/\1/")
    fi
    if [ -f /etc/default-route-interface ]             # default route existing?
    then
        read default_route_interface < /etc/default-route-interface
    else
        default_route_interface=$route_dev
        case $default_route_interface in
            ppp0) default_route_interface=pppoe ;;
        esac
    fi

    if [ "$default_route_interface" = "$interface" ]
    then
        echo "default route interface '$interface' comes up"
        is_default_route='yes'
        echo $interface > /var/run/online.ipv6

        if [ "$route_dev" ]
        then
            if [ "$route_dev" != "$default_route_interface" -o \
                 "$route_gw"  != "$def_gateway" ]; then
                echo "changing default route from ${route_gw:-<none>}:$route_dev to ${def_gateway:-<none>}:$interface"
                case $def_gateway in
                    "") ip -6 route change default dev $real_interface ;;
                    *)  ip -6 route change via $def_gateway ;;
                esac
            fi
        else
            ip -6 route add default dev $real_interface
        fi
    else
        is_default_route='no'
    fi

    # kristov: imond cannot currently handle a dual-stack IPv4+IPv6 connection properly
    if [ -f /var/run/imond.pid ]
    then
        /usr/local/bin/imond-stat "$real_interface up $local"
    fi

    # Call all custom ipv6-ups
    for j in /etc/ppp/ipv6pre-up[0-9][0-9][0-9].*
    do
        if [ -f $j ]
        then
            echo "executing $j"
            . $j
        fi
    done

    if [ ! -f /var/run/ipv6pre-up.ppp-once ]
    then
        for j in /etc/ppp-once/ipv6pre-up[0-9][0-9][0-9].*
        do
            if [ -f $j ]
            then
                echo "executing $j"
                . $j
            fi
        done
    fi
}

ip=ipv6pre
script_op=up
. /etc/ppp/ip-up-down