#!/bin/bash

#
# zonefile_to_tinydns, converts one BIND-format zone file to
# tinydns-data format.
#
# Copyright Michael Orlitzky
#
# http://michael.orlitzky.com/
#
# Released under the WTFPLv2.
#
#  http://sam.zoy.org/wtfpl/COPYING
#


# What it Does
#
# This script converts one BIND zonefile to tinydns-data format.
# Read the usage description below for input/output format.
#
# There's only one bit of configuration you need to do: enter the path
# to the bind-to-tinydns program below.

BIND_TO_TINYDNS=~/bind-to-tinydns-0.4.3/bind-to-tinydns


# Leave the rest alone unless you don't want to.

EXIT_SUCCESS=0
EXIT_NOT_ENOUGH_ARGS=1

if [ $# -lt 1 ]; then
    echo 'Usage:'
    echo ''
    echo "  $0 <input file> [extension]"
    echo ''
    echo 'The input file should be of the form <zone_name>.something, where'
    echo 'the extension is arbitrary but required. The output file will be'
    echo 'named <zone_name>.extension if the optional extension argument is'
    echo 'supplied. The default extension is "tinydns".'
    echo ''
    echo 'Example:'
    echo ''
    echo "  $0 example.org.dns"
    echo ''
    echo 'would output a tinydns-data file named example.org.tinydns.'
    echo ''
    exit $EXIT_NOT_ENOUGH_ARGS
fi

# Set the default extension.
OUT_EXTENSION='tinydns'

if [ $# -gt 1 ]; then
    # The user supplied an extension. Use it.
    OUT_EXTENSION=$2
fi

# If the input file name does not contain both a zone and an
# extension, terrible things are going to happen here.
INFILE=`basename $1`
ZONE="${INFILE%.*}"
OUTFILE="${ZONE}.${OUT_EXTENSION}"
TMPFILE="${ZONE}.tmp"

$BIND_TO_TINYDNS $ZONE $OUTFILE $TMPFILE < $1

exit $EXIT_SUCCESS