#!/bin/sh
# POPbeforeETCSERVICE Script.
# Version 1.2
# Copyright (c) 2005 Mappi <info@mappi-daily.net> 
# All rights reserved.

# This script is the one to give the access permit in cooperation
# with dracd as for service corresponding to TCP Wrapper. 

# Default setting.
# DBPATH=<drac db file path>
DBPATH=/etc/mail/dracd.db

# FILEPATH=<hosts.allow file path>
FILEPATH=/etc/hosts.allow

# FILEPATH=<hosts.allow backup file path>
FILEPATH2=/etc/hosts.allow.bak

# Temporary file path
TMP=/tmp/access-allow
TMP2=/tmp/access-allow.bak
SCR=/tmp/access-allow.scr

# LOGFILE=<log file path>
LOGFILE=/var/log/access-allow.log

# TIME=<Sleep sec time>
TIME=20

# SERVICE=<service or daemon name>
# Please input service corresponding to TCP Wrapper. 
SERVICE=in.telnetd

# Default setting end.

# Environmental investigation
if [ ! "(" -s ${DBPATH} ")" ];then
	echo "${0}:${DBPATH}: No such file or directory"
	echo "${0}:${DBPATH}: No such file or directory" >> ${LOGFILE}
	exit 1
fi
if [ ! "(" -s ${FILEPATH} ")" ];then
	echo "${0}:${FILEPATH}: No such file or directory"
	echo "${0}:${FILEPATH}: No such file or directory" >> ${LOGFILE}
	exit 1
fi

# Start log output
echo "`date` access-allow.sh start..." >> ${LOGFILE}
# Delete temporary files.
if [ ${TMP} ];then
	rm -f ${TMP}
fi

# Main processing.
while [ "TRUE" ]
do
COUNT=`db33_dump -p ${DBPATH} | egrep "[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*" | wc -l | sed s/^[[:space:]]*//g`
CT=1
until [ "${CT}" -gt "${COUNT}" ]
	do
	echo -n "`db33_dump -p ${DBPATH} | egrep '[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*' | sed -n ${CT}p` " >> ${TMP}
	CT=`expr ${CT} + 1`
	done
	if [ "`cat ${TMP}`" != "`cat ${TMP2}`" ];then
		echo "/access-allow/a\\" > ${SCR}
		echo -n "${SERVICE} : " >> ${SCR}
		cat ${TMP} >> ${SCR}
		cp ${FILEPATH} ${FILEPATH2}
		sed /${SERVICE}/d ${FILEPATH2} > ${FILEPATH}
		cp ${FILEPATH} ${FILEPATH2}
		sed -f ${SCR} ${FILEPATH2} > ${FILEPATH}
		echo "`date` add `cat ${TMP}`" >> ${LOGFILE}
	fi
mv ${TMP} ${TMP2}
sleep ${TIME}
done