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#!/bin/bash
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#!/bin/bash
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# $Id: alcasar-dns-local.sh 2262 2017-05-29 20:19:03Z tom.houdayer $
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# $Id: alcasar-dns-local.sh 2559 2018-06-10 12:56:39Z rexy $
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# alcasar-dns-interne.sh
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# alcasar-dns-interne.sh
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# by Rexy - 3abtux
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# by Rexy - 3abtux
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# This script is distributed under the Gnu General Public License (GPL)
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# This script is distributed under the Gnu General Public License (GPL)
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SED="/bin/sed -i"
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SED="/bin/sed -i"
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ALCASAR_CONF_FILE="/usr/local/etc/alcasar.conf"
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ALCASAR_CONF_FILE="/usr/local/etc/alcasar.conf"
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DNSMASQ_CONF_FILE="/etc/dnsmasq.conf /etc/dnsmasq-blackhole.conf /etc/dnsmasq-blacklist.conf /etc/dnsmasq-whitelist.conf"
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DNSMASQ_CONF_FILE="/etc/dnsmasq.conf /etc/dnsmasq-blackhole.conf /etc/dnsmasq-blacklist.conf /etc/dnsmasq-whitelist.conf"
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DNSMASQ_CONF_LOCAL_FILE="/usr/local/etc/alcasar-dns-name"
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LOCAL_DOMAIN_CONF_FILE="/usr/local/etc/alcasar-dns-name"
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LOCAL_HOSTNAME_FILE="/etc/hosts"
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# define DNS parameters (LAN side)
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# define DNS parameters (LAN side)
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INT_DNS_DOMAIN=`grep INT_DNS_DOMAIN $ALCASAR_CONF_FILE|cut -d"=" -f2`			# Nom du domaine DNS interne
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INT_DNS_DOMAIN=`grep INT_DNS_DOMAIN $ALCASAR_CONF_FILE|cut -d"=" -f2`			# Nom du domaine DNS interne
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INT_DNS_IP=`grep INT_DNS_IP $ALCASAR_CONF_FILE|cut -d"=" -f2`				# Adresse du serveur DNS interne
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INT_DNS_IP=`grep INT_DNS_IP $ALCASAR_CONF_FILE|cut -d"=" -f2`				# Adresse du serveur DNS interne
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INT_DNS_ACTIVE=`grep INT_DNS_ACTIVE $ALCASAR_CONF_FILE|cut -d"=" -f2`			# Activation de la redirection DNS interne
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INT_DNS_ACTIVE=`grep INT_DNS_ACTIVE $ALCASAR_CONF_FILE|cut -d"=" -f2`			# Activation de la redirection DNS interne
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usage="Usage: alcasar-dns-interne.sh {--on | -on} | {--off | -off}"
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usage="Usage: alcasar-dns-interne.sh {--on | -on} | {--off | -off} | {--add | -add}"
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nb_args=$#
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nb_args=$#
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args=$1
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args=$1
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if [ $nb_args -eq 0 ]
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if [ $nb_args -eq 0 ]
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then
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then
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	echo "$usage"
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	echo "$usage"
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	exit 1
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	exit 1
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fi
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fi
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function restart_dns(){
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	for dns in dnsmasq dnsmasq-blacklist dnsmasq-whitelist dnsmasq-blackhole
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	do
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		systemctl restart $dns
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	done
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}
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case $args in
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case $args in
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	-\? | -h | --h)
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	-\? | -h | --h)
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		echo "$usage"
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		echo "$usage"
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		exit 0
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		exit 0
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		;;
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		;;
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	--add|-add) # add a local host resolution
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		if [ $nb_args -ne 3 ]
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		then
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			echo "$usage"
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			exit 1
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		else
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			echo -e "$2\t$3" >> $LOCAL_HOSTNAME_FILE
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			restart_dns
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		fi
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		;;
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	--del|-del) # remove a local host resolution
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		if [ $nb_args -ne 3 ]
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		then
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			echo "$usage"
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			exit 1
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		else
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			$SED "/^$2\t$3/d" SLOCAL_HOSTNAME_FILE
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			restart_dns
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		fi
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		;;
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	--off|-off) # disable DNS redirector
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	--off|-off) # disable DNS redirector
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		$SED "s?^#filterwin2k.*?filterwin2k?g" $DNSMASQ_CONF_FILE
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		$SED "s?^#filterwin2k.*?filterwin2k?g" $DNSMASQ_CONF_FILE
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		$SED "s?^server.*?#&?g" $DNSMASQ_CONF_LOCAL_FILE
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		$SED "s?^server.*?#&?g" $LOCAL_DOMAIN_CONF_FILE
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		$SED "s?^INT_DNS_ACTIVE.*?INT_DNS_ACTIVE=off?g" $ALCASAR_CONF_FILE
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		$SED "s?^INT_DNS_ACTIVE.*?INT_DNS_ACTIVE=off?g" $ALCASAR_CONF_FILE
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		/usr/bin/systemctl restart dnsmasq
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		restart_dns
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		/usr/bin/systemctl restart dnsmasq-blacklist
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		/usr/bin/systemctl restart dnsmasq-blackhole
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		/usr/bin/systemctl restart dnsmasq-whitelist
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		;;
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		;;
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	--on|-on) # enable DHCP service on all range of IP addresses
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	--on|-on) # enable DHCP service on all range of IP addresses
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		$SED "s?^filterwin2k.*?#filterwin2k?g" $DNSMASQ_CONF_FILE
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		$SED "s?^filterwin2k.*?#filterwin2k?g" $DNSMASQ_CONF_FILE
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		$SED "s?^server=/.*?server=/$INT_DNS_DOMAIN/$INT_DNS_IP?g" $DNSMASQ_CONF_LOCAL_FILE
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		$SED "s?^server=/.*?server=/$INT_DNS_DOMAIN/$INT_DNS_IP?g" $LOCAL_DOMAIN_CONF_FILE
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		$SED "s?^#server=/.*?server=/$INT_DNS_DOMAIN/$INT_DNS_IP?g" $DNSMASQ_CONF_LOCAL_FILE
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		$SED "s?^#server=/.*?server=/$INT_DNS_DOMAIN/$INT_DNS_IP?g" $LOCAL_DOMAIN_CONF_FILE
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		$SED "s?^INT_DNS_ACTIVE.*?INT_DNS_ACTIVE=on?g" $ALCASAR_CONF_FILE
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		$SED "s?^INT_DNS_ACTIVE.*?INT_DNS_ACTIVE=on?g" $ALCASAR_CONF_FILE
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		/usr/bin/systemctl restart dnsmasq
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		restart_dns
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		/usr/bin/systemctl restart dnsmasq-blacklist
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		/usr/bin/systemctl restart dnsmasq-blackhole
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		/usr/bin/systemctl restart dnsmasq-whitelist
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		;;
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		;;
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	*)
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	*)
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		echo "Argument inconnu :$1";
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		echo "Argument inconnu :$1";
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		echo "$usage"
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		echo "$usage"
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		exit 1
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		exit 1