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| #/bin/bash |
| # $Id$ |
| |
| # 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) |
| |
| CONF_FILE="/usr/local/etc/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="/usr/local/etc/alcasar-bl-categories" |
| BL_CATEGORIES_ENABLED="/usr/local/etc/alcasar-bl-categories-enabled" |
| DIR_DNS_FILTER_AVAILABLE="/usr/local/etc/alcasar-dnsfilter-available" |
| DIR_DNS_FILTER_ENABLED="/usr/local/etc/alcasar-dnsfilter-enabled" |
| 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_DG ] || mkdir -p $DIR_DG |
| [ -d $DIR_DG_BL/ossi ] && mv -f $DIR_DG_BL/ossi $DIR_tmp |
| [ -d $DIR_DG_BL/ip ] && mv -f $DIR_DG_BL/ip $DIR_tmp |
| tar zxf $DIR_tmp/blacklists.tar.gz --directory=$DIR_DG/ |
| [ -d $DIR_tmp/ossi ] && mv -f $DIR_tmp/ossi $DIR_DG_BL/ |
| [ -d $DIR_tmp/ip ] && mv -f $DIR_tmp/ip $DIR_DG_BL/ |
| cd /root |
| rm -rf $DIR_tmp |
| } |
| # 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 -k2n $BL_CATEGORIES > $FILE_tmp |
| mv $FILE_tmp $BL_CATEGORIES |
| } |
| function bl_enable (){ |
| $SED "s/^reportinglevel =.*/reportinglevel = 3/g" /etc/dansguardian/dansguardian.conf |
| $SED "s?^#\"?\"?g" $DIR_DG/urlregexplist # Enable 'safesearch' |
| if [ "$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 |
| $SED "s?^[^#]?#&?g" $DIR_DG/urlregexplist # Disable 'safesearch' |
| if [ "$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 |
| ;; |
| # Mise a jour de la blacklist 'Toulouse' (attente validation md5 avant adaptation à notre structure) |
| -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 |
| transfert |
| install |
| chown -R dansguardian:apache $DIR_DG |
| chmod -R g+w $DIR_DG |
| rm -rf /tmp/con_ok.html |
| fi |
| ;; |
| # Adaptation de la BL à notre structure (dnsmasq + DG) |
| -adapt | --adapt) |
| find $DIR_DG_BL/ -type f -name domains > $BL_CATEGORIES # On récupère le nom des répertoire (catégories) |
| $SED "s?\/domains??g" $BL_CATEGORIES # On supprime le suffice "/domains" |
| rm -f $DIR_DNS_FILTER_AVAILABLE/* |
| 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 > /tmp/dnsmasq-bl.tmp |
| $SED "/[äâëêïîöôüû]/d" /tmp/dnsmasq-bl.tmp |
| $SED "/^#.*/d" /tmp/dnsmasq-bl.tmp |
| $SED "s?.*?address=/&/$PRIVATE_IP?g" /tmp/dnsmasq-bl.tmp # Mise en forme dnsmasq |
| DOMAINE=`basename $PATH_FILE` |
| mv /tmp/dnsmasq-bl.tmp $DIR_DNS_FILTER_AVAILABLE/$DOMAINE.conf |
| done |
| echo |
| ;; |
| # regénération suite à modification de la BL secondaire ou 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 |
| IP_PURE=`grep '^ip' $BL_CATEGORIES_ENABLED|wc -l` |
| if [ $IP_PURE -eq "1" ]; then # filtrage des url sans nom de domaine |
| $SED "s/^\#\*ip$/*ip/g" $DIR_DG/bannedsitelist |
| else |
| $SED "s/^\*ip$/#*ip/g" $DIR_DG/bannedsitelist |
| fi |
| 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 |
| |
| Property changes: |
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