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

run_ipv6_up ()
{
    case $interface in
    ppp0)                # it's DSL, map interface
        case $tty in
        "" | eth*| br* | /dev/ttyp0 | /dev/ttyS[0-4] | /dev/ttyUSB0 | /dev/capi/0 | /dev/ttyACM0 )
            # empty: PPPoE, eth[0-9] in_kernel, else PPTP
            interface=pppoe
        ;;
        esac
    ;;
    esac

    echo $local >/var/run/$interface.ipv6                # store my own ip address

    # 
    # default route is either
    #     default via <ip> dev <dev>
    # or
    #     default          dev <dev>
    def_gateway="<none>"
    def_route=`ip -f inet6 route show | grep ^default`
    route_dev=
    route_gw="<none>"
    if [ "$def_route" ]; then
        set $def_route
        case $# in
            3)  route_dev=$3 
                ;;
            5)  route_gw=$3
                route_dev=$5
                ;;
            *)  logger -t  "ipv6-up[$$]" "Unknown route format '$def_route'" ;;
        esac
    fi
    if [ -f /etc/default-route-interface ]             # default route existing?
    then
        read default_route_interface def_gateway < /etc/default-route-interface
    else
        default_route_interface=$route_dev
        case $default_route_interface in
            ppp0) default_route_interface=pppoe ;;
        esac
    fi
    if [ "$default_route_interface" = "$interface" ]
    then
    	logger -t  "ipv6-up[$$]" "default route interface '$interface' comes up"
        is_default_route='yes'
        > /var/run/online.ipv6

        : ${def_gateway:="<none>"}      
        if [ "$route_dev" ]
        then 
            if [ "$route_dev" != "$default_route_interface" -o \
                 "$route_gw"  != "$def_gateway" ]; then
                logger -t "ipv6-up[$$]" "changing default route from $route_gw:$route_dev to $def_gateway:$interface"
                case $def_gateway in
                    "<none>") ip -f inet6 route change default dev $real_interface ;;
                    *)        ip -f inet6 route change via $def_gateway ;;
                esac
            fi
        else
            ip -f inet6 route add default dev $real_interface
        fi
    else
        is_default_route='no'
    fi

#    if [ "$interface" = "pppoe" -a -f /var/run/imond.pid ]
#    then
#        /usr/local/bin/imond-stat "pppoe: up"
#    fi

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

    if [ ! -f /var/run/ipv6-up.ppp-once ]
    then
        for j in /etc/ppp-once/ipv6-up[0-9][0-9][0-9].*
        do
            if [ -f $j ]
            then
                . $j
            fi
        done
    fi
}

export PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin

# Wait for end of boot
while [ ! -f /var/run/boot_finished ]
do
      sleep 1
done

if [ -f /var/run/syslogd.pid ]; then
    exec > /tmp/ipv6-up.$$ 2>&1
else
    exec >/dev/console   2>&1
fi
[ -f /var/run/debug_ipv6up ] && set -x

real_interface=$1
interface=$1
tty=$2
speed=$3
local=$4
remote=$5
lock_file=/var/lock/pppd.ipv6.$interface

# Wait for other ipv6-up/ip-down instances
while [ -f $lock_file ]
do
      sleep 1
done
> $lock_file

run_ipv6_up 

set +x
if [ -f /tmp/ipv6-up.$$ ]
then
    sed -e "s/`echo -e '\033'`\[[0-9]\+m//g" /tmp/ipv6-up.$$ | logger -t ipv6-up 
    rm -f /tmp/ipv6-up.$$
fi

rm -f $lock_file

exit 0