#!/bin/sh

#####################################################################
# Script to generate bind configuration for many domains for
# one server
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# Author: Andrzej Kardaś
# License: GPLv3 
# The full version of the licencse can be obtainted by visiting: 
# http://www.gnu.org/licenses/gpl.html
#######################################################################
BIND_DIR=/chroot/dns/var/bind/
MASTER_CONF_FILE=${BIND_DIR}conf/master.conf
SLAVE_CONF_FILE=${BIND_DIR}conf/slave.conf
SLAVE_DIR=slave
MASTER_DIR=master
SERIAL=$(date +"%Y%m%y")01
MASTER_SERVER_IP="X.X.X.X"
SLAVE_SERVERS_NAMES="nameserver1 nameserver2"
HOSTNAME=short_server_name
CNAMES="www"
MX=
MX_IP=X.X.X.X
FILE=${2}

#Checking the list of parameters

if ( [ $#  -lt 2 ] ) then

echo "To few arguments were passed to script"
echo "Usage ./bind_config.sh type zone_list_file"
echo "Type can be master | slave"

exit 0
fi

#Creating the zone files

if [ "${1}" = "master" ]; then

while read line
	do
		echo "zone \"$line\" IN { type master; file \"${MASTER_DIR}/$line\"; };" >> ${MASTER_CONF_FILE}
		echo "" >  ${BIND_DIR}${MASTER_DIR}/$line
		echo "\$TTL 600" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "; $line" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "@       IN      SOA     ${HOSTNAME}.$line. hostmaster.$line. (" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "                        ${SERIAL}      ; serial" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "                        12h             ; refresh" >>  ${BIND_DIR}${MASTER_DIR}/$line 
		echo "                        1h              ; retry" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "                        2w              ; expire" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "                        1h              ; minimum" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "                        )" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "        IN      NS      ${HOSTNAME}.$line." >>  ${BIND_DIR}${MASTER_DIR}/$line
		for server in ${SLAVE_SERVERS_NAMES}
		do
			echo "        IN      NS      $server." >>  ${BIND_DIR}${MASTER_DIR}/$line
		done
		if [ ${MX} ]; then
			echo "        IN      MX      10      ${MX}.$line." >>  ${BIND_DIR}${MASTER_DIR}/$line
		fi
		echo "@                       IN      A       ${MASTER_SERVER_IP}" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "; host_records" >>  ${BIND_DIR}${MASTER_DIR}/$line 
		echo "localhost               IN      A       127.0.0.1" >>  ${BIND_DIR}${MASTER_DIR}/$line
		echo "${HOSTNAME}                 IN      A       ${MASTER_SERVER_IP}" >>  ${BIND_DIR}${MASTER_DIR}/$line
		if [ ${MX} ]; then
			echo "${MX}		IN      A	${MASTER_SERVER_IP}" >>  ${BIND_DIR}${MASTER_DIR}/$line
		fi
		for cname in ${CNAMES}
		do
			echo "${cname}               IN      CNAME       ${HOSTNAME}" >>  ${BIND_DIR}${MASTER_DIR}/$line
		done
	done < ${FILE}

elif [ "${1}" = "slave" ]; then

	while read line
		do
			echo "zone \"$line\" IN { type slave; masters{ ${MASTER_SERVER_IP}; }; file \"${SLAVE_DIR}/$line\"; };" >> ${SLAVE_CONF_FILE}
		done < ${FILE}

else 

	echo "Usage ./bind_zone_config.sh type zone_list_file"
	echo "Type can be master | slave"
	exit 0
fi