#!/bin/bash
#
# HubGridCloud libvirt qemu hook
#

domain_name="$1"
domain_task="$2"
network="169.254.0.0/16"


zeroconf_add() {
    # Get VNET interface
    target=$(xmlstarlet select -t -m "//devices/interface[@type='bridge']" -v "concat(target/@dev, ' ')" -n | head -1)
    iface=$(echo ${target} | cut -d- -f2)

    # Add rule for 169.254.0.0/16
    ebtables -t nat -I "I-${iface}-ipv4-ip" 2 -p IPv4 --ip-src "${network}" -j RETURN
    ebtables -t nat -I "I-${iface}-arp-ip" -p ARP --arp-ip-src "${network}" -j RETURN
}


case "${domain_task}" in
  prepare)
    ;;
  started)
    zeroconf_add
    ;;
  stopped)
    ;;
  reconnect)
    zeroconf_add
    ;;
  *)
    exit 0
    echo "qemu hook called with unexpected options $*" >&2
    ;;
esac

exit 0