#!/bin/bash -e
#============================================================================
# /etc/xen/vif-route
#
# Script for configuring a vif in routed mode.
# The hotplugging system will call this script if it is specified either in
# the device configuration given to Xend, or the default Xend configuration
# in /etc/xen/xend-config.sxp.  If the script is specified in neither of those
# places, then vif-bridge is the default.
#
# Usage:
# vif-route (add|remove|online|offline)
#
# Environment vars:
# vif         vif interface name (required).
# XENBUS_PATH path to this device's details in the XenStore (required).
#
# Read from the store:
# ip      list of IP networks for the vif, space-separated (default given in
#         this script).
#============================================================================

case $0 in */*) dir=${0%/*};; *) dir=.;; esac
. "$dir/vif-common.sh"

main_ip=$(dom0_ip)
mac=$(xenstore_read "$XENBUS_PATH/mac")

case "$command" in
    online)
        ifconfig ${vif} ${main_ip} netmask 255.255.255.255 \
		broadcast ${main_ip} up
	ip -f inet6 addr delete dev $vif local fe80::fcff:ffff:feff:ffff/64 ||:
        ipcmd='add'
	iptcmd='-A'
	cmdprefix=''
	add_only=''
        ;;
    offline)
        ifdown ${vif}
        ipcmd='del'
	iptcmd='-D'
	cmdprefix='do_without_error'
	add_only=:
        ;;
esac

if [ "${ip}" ] ; then
    # If we've been given a list of IP addresses, then add routes from dom0 to
    # the guest using those addresses.
    for addr in ${ip} ; do
      ${cmdprefix} ip route ${ipcmd} ${addr} dev ${vif} src ${main_ip}
      ${add_only} ip -f inet neigh add to ${addr} dev ${vif} lladdr ${mac} nud permanent
      ${add_only} arp -i ${vif} -s ${addr} ${mac} pub
    done 
fi

iptables "$iptcmd" INPUT -i "$vif" -j AdtXenIn
iptables "$iptcmd" FORWARD -i "$vif" -j AdtXenFwd

log debug "Successful vif-route $command for $vif."
if [ "$command" == "online" ]
then
  success
fi