#!/bin/sh

PPP_IFACE="$1"
PPP_TTY="$2"
PPP_SPEED="$3"
PPP_LOCAL="$4"
PPP_REMOTE="$5"
PPP_IPPARAM="$6"

if [ ${PPP_LOCAL} = '89.234.186.11' ]; then
        exit 0
fi

prefix_interco=$(awk '$1 == "Framed-IPv6-Prefix" { print $2 }' /run/radattr.$PPP_IFACE)
prefix_deleg=$(awk '$1 == "Delegated-IPv6-Prefix" { print $2 }' /run/radattr.$PPP_IFACE)

ip -6 addr add ${prefix_interco%/64}1/64 dev ${PPP_IFACE}
ip -6 route add $prefix_deleg via $PPP_REMOTE dev $PPP_IFACE

if [ ! -d /run/vpn/ ]; then
        mkdir /run/vpn/
fi

echo "
interface $PPP_IFACE
{
        AdvSendAdvert on;
        IgnoreIfMissing on;

        prefix $prefix_interco {};
};
# $PPP_LOCAL $PPP_REMOTE
" > /run/vpn/radvd-user.${PPP_IFACE}.conf
cat /etc/radvd.conf.base > /etc/radvd.conf
cat /run/vpn/radvd-user.*.conf >> /etc/radvd.conf

kill -HUP $(cat /run/radvd/radvd.pid)

sed \
        -e "s|#IFACE#|${PPP_IFACE}|" \
        -e "s|#PF_INTERCO#|${prefix_interco}|" \
        -e "s|#INET6_INTERCO#|${prefix_interco%/64}|g" \
        -e "s|#PF_PD#|${prefix_deleg%/48}|" \
        /etc/kea/kea-dhcp6-ppp.conf > /run/vpn/kea-dhcpd6-${PPP_IFACE}.conf

/usr/sbin/kea-dhcp6 -c/run/vpn/kea-dhcpd6-${PPP_IFACE}.conf &

# Forcer un RA après le démarage du DHCPv6
kill -HUP $(cat /run/radvd/radvd.pid)