#!/bin/sh

### add ad servers to named config
###

# check we've been given some hostnames
if [ ! $1 ]
then
	echo "usage: $0 <list of adservers | file containing a list of adservers>"
	exit
fi

# set things
namedconf=/etc/named.conf
nullzonefile=null.db

# check named config is writable
if [ ! -w $namedconf ]
then
	echo "$namedconf is not writable by you, can't add zones"
	exit
fi

# check to see if it's a file

if [ -f $1 ]
	then serverlist=`cat $1`
	else serverlist=$@
fi

# do things
for host in $serverlist
do
	if grep -iq '^zone "$host"' $namedconf
	then
		echo "$host is already in $namedconf"
	else
		echo "adding $host"
		echo 'zone "'$host'"' >> $namedconf
		echo -e '\t{ type master; file "'$nullzonefile'"; };' >> $namedconf
	fi
done

# ask if we want to reload the nameserver
echo -n "reload bind (default yes) [y/n]: "

while read answer
do
	if [ ! $answer ] || [ $answer != 'n' ]
	then
		ndc reload
	fi
	break
done