Script for gluing nsnotifyd and cli53 together

synchronise.sh

#!/bin/bash
set -e
# Script to update a zone - designed to be triggerd by nsnotifyd
PATH=/bin:/usr/bin:/usr/local/bin:$PATH

# Constants
DYN_TRANSFER_HOST=xfrout1.dynect.net

# Get command line parameters
ZONE=$1
NOTIFY_SERIAL=$2
SOURCE=$3

# check command line parameters
if [ -z "${ZONE}" -o -z "${NOTIFY_SERIAL}" ]; then
  echo "Usage: $0 <zone> <serial> [<source>]" >&2
  exit 1
fi

ZONEFILE=`mktemp /tmp/${ZONE}.zonefile.XXXXXXXXX`
dig AXFR ${ZONE} @${DYN_TRANSFER_HOST} > ${ZONEFILE} 2>&1

# check if the transfer was successful
if ! egrep "Transfer failed|connection timed out|Name or service not known|connection refused|network unreachable|host unreachable|end of file|communications error|couldn't get address" ${ZONEFILE} > /dev/null; then
  #extract serial from ZONEFILE
  SOA_SERIAL=$( cat ${ZONEFILE} | awk '{if ($4 == "SOA") print $7;}' | head -1 )

  if [ "$SOA_SERIAL" -eq "$SOA_SERIAL" ] 2>/dev/null; then
    SERIAL=$SOA_SERIAL
  else
    echo "SOA record not found in transferred zone, couldn't extract serial"
    exit
  fi

  # append a serial number record for troubleshooting
  echo -e "\n_serial._dyn.${ZONE}. IN TXT \"${SERIAL}\"" >> ${ZONEFILE}

  # push into Route53
  cli53 import --file ${ZONEFILE} --replace ${ZONE}
fi
rm ${ZONEFILE}