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#/bin/sh
# $Id: alcasar-bl.sh 311 2010-11-07 22:31:52Z richard $
# Script de gestion de la BL pour le filtrage de domaine (via dnsmasq) et d'URL (via dansguardian)
# By 3abtux & rexy
DIR_tmp="/tmp/blacklists"
FILE_tmp="/tmp/fileFilter.txt"
DIR_DANSGUARDIAN="/etc/dansguardian/lists"
BL_CATEGORIES_AVAILABLE="/usr/local/etc/alcasar-bl-categories-available"
BL_CATEGORIES_DEFAULT="/usr/local/etc/alcasar-bl-categories-default"
DIR_DNS_FILTER_AVAILABLE="/usr/local/etc/alcasar-dnsfilter-available"
DIR_DNS_FILTER_ENABLED="/usr/local/etc/alcasar-dnsfilter-enabled"
IP_RETOUR="192.168.182.1"
BL_SERVER="cri.univ-tlse1.fr"
SED="/bin/sed -i"
# Récupération de l'archive de la BL Toulouse
function transfert () {
mkdir -p $DIR_tmp
cd $DIR_tmp
wget http://$BL_SERVER/blacklists/download/blacklists.tar.gz
}
# Décompression de la BL (en conservant la WL)
function install () {
[ -d $DIR_DANSGUARDIAN ] || mkdir -p $DIR_DANSGUARDIAN
[ -d $DIR_DANSGUARDIAN/blacklists/ossi ] && mv -f $DIR_DANSGUARDIAN/blacklists/ossi $DIR_tmp
tar zxf $DIR_tmp/blacklists.tar.gz --directory=$DIR_DANSGUARDIAN/
[ -d $DIR_tmp/ossi ] && mv -f $DIR_tmp/ossi $DIR_DANSGUARDIAN/blacklists/
cd /root
rm -rf $DIR_tmp
}
# Adaptation de la BL Toulouse à la structure Dnsmasq
function adapt () {
# On récupère le nom des répertoire (catégories)
find $DIR_DANSGUARDIAN -type f -name domains > $BL_CATEGORIES_AVAILABLE
# On supprime le suffice "/domains"
$SED "s?\/domains??g" $BL_CATEGORIES_AVAILABLE
rm -f $DIR_DNS_FILTER_AVAILABLE/*
echo -n "Adaptation de la BL Toulouse. Veuillez patienter : "
# On copie les fichiers de domaine pour chaque catégorie
for PATH_FILE in `cat $BL_CATEGORIES_AVAILABLE`
do
DOMAINE=`basename $PATH_FILE`
echo -n "."
# suppression des @IP, des lignes commentées et des caractères bizarres comme les ô et û ö ü
egrep -v "([0-9]{1,3}\.){3}[0-9]{1,3}" $PATH_FILE/domains > /tmp/dnsmasq-bl.tmp
$SED "/[äâëêïîöôüû]/d" /tmp/dnsmasq-bl.tmp
$SED "/^#.*/d" /tmp/dnsmasq-bl.tmp
# Mise en forme dnsmasq
$SED "s?.*?address=/&/$IP_RETOUR?g" /tmp/dnsmasq-bl.tmp
mv /tmp/dnsmasq-bl.tmp $DIR_DNS_FILTER_AVAILABLE/$DOMAINE.conf
done
# on adapte le fichier $BL_CATEGORIES_AVAILABLE au choix de catégorie par défaut
$SED "s?^[^#]?#&?g" $BL_CATEGORIES_AVAILABLE # on commente ce qui ne l'est pas
for ENABLE_CATEGORIE in `cat $BL_CATEGORIES_DEFAULT`
do
$SED "/^.*$ENABLE_CATEGORIE/d" $BL_CATEGORIES_AVAILABLE
$SED "1i\/etc\/dansguardian\/lists\/blacklist\/$ENABLE_CATEGORIE" $BL_CATEGORIES_AVAILABLE
done
echo
}
# 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_DANSGUARDIAN/bannedsitelist $DIR_DANSGUARDIAN/bannedurllist
# on affecte les catégories
for i in `cat $BL_CATEGORIES_DEFAULT`
do
ln -s $DIR_DNS_FILTER_AVAILABLE/$i.conf $DIR_DNS_FILTER_ENABLED/$i
# echo ".Include<$DIR_DANSGUARDIAN/blacklists/$i/domains>" >> $DIR_DANSGUARDIAN/bannedsitelist
echo ".Include<$DIR_DANSGUARDIAN/blacklists/$i/urls>" >> $DIR_DANSGUARDIAN/bannedurllist
done
}
usage="Usage: alcasar-bl.sh -on | -off | -download| -reload"
nb_args=$#
args=$1
if [ $nb_args -eq 0 ]
then
nb_args=1
args="-h"
fi
case $args in
-\? | -h* | --h*)
echo "$usage"
exit 0
;;
# activation du filtrage
-on)
cat_choice
$SED "s/^reportinglevel =.*/reportinglevel = 3/g" /etc/dansguardian/dansguardian.conf
service dansguardian restart
service dnsmasq restart
;;
# désactivation du filtrage
-off)
rm -rf $DIR_DNS_FILTER_ENABLED/*
$SED "s/^reportinglevel =.*/reportinglevel = -1/g" /etc/dansguardian/dansguardian.conf
service dansguardian reload
service dnsmasq restart
;;
# Mise a jour de la blacklist 'Toulouse' et adaptation à dansguardian et dnsmasq
-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
transfert
install
chown -R dansguardian:apache $DIR_DANSGUARDIAN
chmod -R g+w $DIR_DANSGUARDIAN
DATE=`date '+%d %B %Y - %Hh%M'`
echo "Univ-tlse du $DATE " > /var/www/html/VERSION-BL
rm -rf /tmp/con_ok.html
fi
adapt
;;
# regénération suite à modification de la BL secondaire
-reload)
# pour Dansguardian
chown -R dansguardian:apache $DIR_DANSGUARDIAN/blacklists/ossi
chmod -R g+w $DIR_DANSGUARDIAN/blacklists/ossi
cat_choice
service dansguardian reload
# pour dnsmasq (noms de domaine réhabilités)
if [ `wc -w $DIR_DANSGUARDIAN/exceptionsitelist|cut -d " " -f1` != "0" ]
then
for i in `cat $DIR_DANSGUARDIAN/exceptionsitelist`
do
$SED "/$i/d" $DIR_DNS_FILTER_AVAILABLE/sect.conf
done
fi
$SED "s?.*?address=/&/$IP_RETOUR?g" $DIR_DNS_FILTER_AVAILABLE/ossi.conf
service dnsmasq reload
;;
*)
echo "Argument inconnu :$1";
echo "$usage"
exit 1
;;
esac