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#/bin/bash
# $Id: alcasar-bl.sh 878 2012-06-03 16:07:40Z richard $
# alcasar-bl.sh
# by Franck BOUIJOUX and Richard REY
# This script is distributed under the Gnu General Public License (GPL)
# Gestion de la BL pour le filtrage de domaine (via dnsmasq) et d'URL (via Dansguardian)
# Manage the BL for DnsBlackHole (dnsmasq) and URL filtering (Dansguardian)
DIR_CONF="/usr/local/etc"
CONF_FILE="$DIR_CONF/alcasar.conf"
private_ip_mask=`grep PRIVATE_IP= $CONF_FILE|cut -d"=" -f2`
private_ip_mask=${private_ip_mask:=192.168.182.1/24}
PRIVATE_IP=`echo $private_ip_mask | cut -d"/" -f1` # ALCASAR LAN IP address
DIR_tmp="/tmp/blacklists"
FILE_tmp="/tmp/fileFilter.txt"
DIR_DG="/etc/dansguardian/lists"
DIR_DG_BL="$DIR_DG/blacklists"
BL_CATEGORIES="$DIR_CONF/alcasar-bl-categories"
WL_CATEGORIES="$DIR_CONF/alcasar-wl-categories"
BL_CATEGORIES_ENABLED="$DIR_CONF/alcasar-bl-categories-enabled"
DIR_DNS_FILTER_AVAILABLE="$DIR_CONF/alcasar-dnsfilter-available"
DIR_DNS_FILTER_ENABLED="$DIR_CONF/alcasar-dnsfilter-enabled"
BL_SERVER="dsi.ut-capitole.fr"
SED="/bin/sed -i"
# Permet d'activer/désactiver les catégories de la BL
function cat_choice (){
# un peu de ménage
rm -rf $DIR_DNS_FILTER_ENABLED/*
$SED "/\.Include/d" $DIR_DG/bannedsitelist $DIR_DG/bannedurllist
# on adapte le fichier $BL_CATEGORIES au choix de catégorie
$SED "s?^[^#]?#&?g" $BL_CATEGORIES # on commente ce qui ne l'est pas
for ENABLE_CATEGORIE in `cat $BL_CATEGORIES_ENABLED` # on affecte les catégories à dansguardian et dnsmasq
do
$SED "/\/$ENABLE_CATEGORIE$/d" $BL_CATEGORIES
$SED "1i\/etc\/dansguardian\/lists\/blacklists\/$ENABLE_CATEGORIE" $BL_CATEGORIES
ln -s $DIR_DNS_FILTER_AVAILABLE/$ENABLE_CATEGORIE.conf $DIR_DNS_FILTER_ENABLED/$ENABLE_CATEGORIE
echo ".Include<$DIR_DG_BL/$ENABLE_CATEGORIE/domains>" >> $DIR_DG/bannedsitelist # dansguardian s'occupe du contournement par proxy http ;-)
echo ".Include<$DIR_DG_BL/$ENABLE_CATEGORIE/urls>" >> $DIR_DG/bannedurllist
done
sort +0.0 -0.2 $BL_CATEGORIES -o $FILE_tmp
mv $FILE_tmp $BL_CATEGORIES
}
function bl_enable (){
$SED "s/^reportinglevel =.*/reportinglevel = 3/g" /etc/dansguardian/dansguardian.conf
if [ "$PARENT_SCRIPT" != "/usr/local/bin/alcasar-conf.sh" ] # don't launch on install stage
then
service dansguardian restart
service dnsmasq restart
/usr/local/bin/alcasar-iptables.sh
fi
}
function bl_disable (){
rm -rf $DIR_DNS_FILTER_ENABLED/*
$SED "s/^reportinglevel =.*/reportinglevel = -1/g" /etc/dansguardian/dansguardian.conf
if [ "$PARENT_SCRIPT" != "/usr/local/bin/alcasar-conf.sh" ] # don't launch on install stage
then
service dansguardian restart
service dnsmasq restart
/usr/local/bin/alcasar-iptables.sh
fi
}
usage="Usage: alcasar-bl.sh {-on or --on} | { -off or --off } | { -download or --download } | { -reload or --reload }"
nb_args=$#
args=$1
if [ $nb_args -eq 0 ]
then
DNS_FILTERING=`grep DNS_FILTERING $CONF_FILE|cut -d"=" -f2` # DNS and URLs filter (on/off)
DNS_FILTERING=${DNS_FILTERING:=off}
echo "Set BlackList Filtering to $DNS_FILTERING"
if [ $DNS_FILTERING = on ]; then
cat_choice
bl_enable
else
bl_disable
fi
exit 0
fi
case $args in
-\? | -h* | --h*)
echo "$usage"
exit 0
;;
# activation du filtrage
-on | --on)
cat_choice
$SED "s?^DNS_FILTERING.*?DNS_FILTERING=on?g" $CONF_FILE
bl_enable
;;
# désactivation du filtrage
-off | --off)
$SED "s?^DNS_FILTERING.*?DNS_FILTERING=off?g" $CONF_FILE
bl_disable
;;
# Récupération de l'archive de la BL Toulouse
-download | --download)
rm -rf /tmp/con_ok.html
`/usr/bin/curl $BL_SERVER -# -o /tmp/con_ok.html`
if [ ! -e /tmp/con_ok.html ]
then
echo "Erreur : le serveur de blacklist ($BL_SERVER) n'est pas joignable"
else
rm -rf /tmp/con_ok.html $DIR_tmp
mkdir $DIR_tmp
cd $DIR_tmp
wget http://$BL_SERVER/blacklists/download/blacklists.tar.gz
md5sum $DIR_tmp/blacklists.tar.gz | cut -d" " -f1 > $DIR_tmp/md5sum
cd /root
fi
;;
# Adaptation de la BL de Toulouse à notre structure (dnsmasq + DG)
-adapt | --adapt)
if [ -f $DIR_tmp/blacklists.tar.gz ]
then
[ -d $DIR_DG_BL/ossi ] && mv -f $DIR_DG_BL/ossi $DIR_tmp
rm -rf $DIR_DG_BL
mkdir $DIR_DG_BL
tar zxf $DIR_tmp/blacklists.tar.gz --directory=$DIR_DG/
[ -d $DIR_tmp/ossi ] && mv -f $DIR_tmp/ossi $DIR_DG_BL/
rm -rf $DIR_tmp
chown -R dansguardian:apache $DIR_DG
chmod -R g+w $DIR_DG
fi
rm -f $BL_CATEGORIES $WL_CATEGORIES $DIR_DNS_FILTER_AVAILABLE/*
touch $BL_CATEGORIES $WL_CATEGORIES
find $DIR_DG_BL/ -type f -name domains > $FILE_tmp # On récupère le nom des répertoire (catégories)
$SED "s?\/domains??g" $FILE_tmp # On supprime le suffixe "/domains"
for categorie in `cat $FILE_tmp` # creation des deux fichiers de categories (BL / WL)
do
if [ -e $categorie/usage ]
then
is_whitelist=`grep white $categorie/usage|wc -l`
else
is_whitelist=0 # si le fichier 'usage' n'existe pas, on considère que la catégorie est une BL
fi
if [ $is_whitelist -eq "0" ]
then
echo "$categorie" >> $BL_CATEGORIES
else
echo "$categorie" >> $WL_CATEGORIES
fi
done
rm -f $FILE_tmp
echo -n "Toulouse BlackList migration process. Please wait : "
for PATH_FILE in `cat $BL_CATEGORIES` # pour chaque catégorie
do
echo -n "."
if [ ! -f $PATH_FILE/urls ] # on crée le fichier 'urls' s'il n'existe pas
then
touch $PATH_FILE/urls
chown dansguardian:apache $PATH_FILE/urls
fi
# suppression des @IP, de caractères acccentués et des lignes commentées
egrep -v "([0-9]{1,3}\.){3}[0-9]{1,3}" $PATH_FILE/domains > $FILE_tmp
$SED "/[äâëêïîöôüû]/d" $FILE_tmp
$SED "/^#.*/d" $FILE_tmp
$SED "s?.*?address=/&/$PRIVATE_IP?g" $FILE_tmp # Mise en forme dnsmasq
DOMAINE=`basename $PATH_FILE`
mv $FILE_tmp $DIR_DNS_FILTER_AVAILABLE/$DOMAINE.conf
done
echo
;;
# regénération suite à modification du choix des catégories
-reload | --reload)
# pour Dansguardian
chown -R dansguardian:apache $DIR_DG_BL/ossi
chmod -R g+w $DIR_DG_BL/ossi
cat_choice
# pour dnsmasq (noms de domaine réhabilités)
if [ `wc -w $DIR_DG/exceptionsitelist|cut -d " " -f1` != "0" ]
then
for i in `cat $DIR_DG/exceptionsitelist`
do
$SED "/$i/d" $DIR_DNS_FILTER_AVAILABLE/*
done
fi
cp -f $DIR_DG_BL/ossi/domains $DIR_DNS_FILTER_AVAILABLE/ossi.conf
$SED "s?.*?address=/&/$PRIVATE_IP?g" $DIR_DNS_FILTER_AVAILABLE/ossi.conf
DNS_FILTERING=`grep DNS_FILTERING $CONF_FILE|cut -d"=" -f2` # DNS and URLs filter (on/off)
DNS_FILTERING=${DNS_FILTERING:=off}
if [ $DNS_FILTERING = on ]; then
bl_enable
else
bl_disable
fi
;;
*)
echo "Argument inconnu :$1";
echo "$usage"
exit 1
;;
esac