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#!/bin/bash
# $Id: alcasar-bl.sh 2441 2017-11-21 14:41:17Z franck $
# 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 $private_ip_mask | cut -d"/" -f1` # ALCASAR LAN IP address
DIR_tmp="/tmp/blacklists"
DIR_WL_tmp="/tmp/whitelists"
FILE_tmp="/tmp/filesfilter.txt"
FILE_ip_tmp="/tmp/filesipfilter.txt"
DIR_DG="/etc/dansguardian/lists"
DIR_DG_BL="$DIR_DG/blacklists"
BL_CATEGORIES="$DIR_CONF/alcasar-bl-categories" # list of names of the BL categories
WL_CATEGORIES="$DIR_CONF/alcasar-wl-categories" # ' ' WL categories
BL_CATEGORIES_ENABLED="$DIR_CONF/alcasar-bl-categories-enabled" # ' ' BL enabled categories
WL_CATEGORIES_ENABLED="$DIR_CONF/alcasar-wl-categories-enabled" # ' ' WL enabled categories
DIR_SHARE="/usr/local/share"
DIR_DNS_BL="$DIR_SHARE/dnsmasq-bl" # all the BL in the DNSMASQ format
DIR_DNS_WL="$DIR_SHARE/dnsmasq-wl" # all the WL ' ' '
DIR_IP_BL="$DIR_SHARE/iptables-bl" # all the IP addresses of the BL
DIR_IP_WL="$DIR_SHARE/iptables-wl" # IP ossi disabled WL
DIR_DNS_BL_ENABLED="$DIR_SHARE/dnsmasq-bl-enabled" # symbolic link to the domains BL (only enabled categories)
DIR_DNS_WL_ENABLED="$DIR_SHARE/dnsmasq-wl-enabled" # ' ' ' WL ' '
DIR_IP_BL_ENABLED="$DIR_SHARE/iptables-bl-enabled" # ' ' ip BL (only enabled categories)
DIR_IP_WL_ENABLED="$DIR_SHARE/iptables-wl-enabled" # ' ' ip WL (ossi and ossi-* imported from ACC)
DNS1=`grep "DNS1" $CONF_FILE | cut -d '=' -f 2` # server DNS1 (for WL domain names)
BL_SERVER="dsi.ut-capitole.fr"
SED="/bin/sed -i"
# enable/disable the BL & WL categories
function cat_choice (){
mkdir -p $DIR_tmp
for LIST in $DIR_IP_BL_ENABLED $DIR_DNS_BL_ENABLED $DIR_IP_WL_ENABLED $DIR_DNS_WL_ENABLED
do
if [ ! -e $LIST ] # only on install stage
then
mkdir $LIST
else
rm -rf $LIST/*
fi
chown root:apache $LIST
chmod 770 $LIST
done
# update categories with rsync
if [ ! -e $DIR_CONF/update_cat.conf ]
then
touch $DIR_CONF/update_cat.conf
chown root:apache $DIR_CONF/update_cat.conf
chmod 660 $DIR_CONF/update_cat.conf
fi
$SED "/\.Include/d" $DIR_DG/bannedsitelist $DIR_DG/bannedurllist # cleaning for DG
$SED "s?^[^#]?#&?g" $BL_CATEGORIES $WL_CATEGORIES # cleaning BL & WL categories file (comment all lines)
# process the file $BL_CATEGORIES with the choice of categories
for ENABLE_CATEGORIE in `cat $BL_CATEGORIES_ENABLED`
do
$SED "/\/$ENABLE_CATEGORIE$/d" $BL_CATEGORIES
$SED "1i\/etc\/dansguardian\/lists\/blacklists\/$ENABLE_CATEGORIE" $BL_CATEGORIES
ln -sf $DIR_DNS_BL/$ENABLE_CATEGORIE.conf $DIR_DNS_BL_ENABLED/$ENABLE_CATEGORIE
ln -sf $DIR_IP_BL/$ENABLE_CATEGORIE $DIR_IP_BL_ENABLED/$ENABLE_CATEGORIE
# echo ".Include<$DIR_DG_BL/$ENABLE_CATEGORIE/domains>" >> $DIR_DG/bannedsitelist # Blacklisted domains are managed by dnsmasq
echo ".Include<$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
sort +0.0 -0.2 $BL_CATEGORIES_ENABLED -o $FILE_tmp
mv $FILE_tmp $BL_CATEGORIES_ENABLED
chown root:apache $BL_CATEGORIES $BL_CATEGORIES_ENABLED
chmod 660 $BL_CATEGORIES $BL_CATEGORIES_ENABLED
# process the file $WL_CATEGORIES with the choice of categories
for ENABLE_CATEGORIE in `cat $WL_CATEGORIES_ENABLED`
do
$SED "/\/$ENABLE_CATEGORIE$/d" $WL_CATEGORIES
$SED "1i\/etc\/dansguardian\/lists\/blacklists\/$ENABLE_CATEGORIE" $WL_CATEGORIES
ln -sf $DIR_DNS_WL/$ENABLE_CATEGORIE.conf $DIR_DNS_WL_ENABLED/$ENABLE_CATEGORIE
done
sort +0.0 -0.2 $WL_CATEGORIES -o $FILE_tmp
mv $FILE_tmp $WL_CATEGORIES
sort +0.0 -0.2 $WL_CATEGORIES_ENABLED -o $FILE_tmp
mv $FILE_tmp $WL_CATEGORIES_ENABLED
chown root:apache $WL_CATEGORIES $WL_CATEGORIES_ENABLED
chmod 660 $WL_CATEGORIES $WL_CATEGORIES_ENABLED
}
# cleaning file and split it ("domains" in $FILE_tmp & "IP" in $FILE_ip_tmp)
function clean_split (){
$SED '/^#.*/d' $FILE_tmp # remove commented lines
$SED '/^\s*$/d' $FILE_tmp # remove empty lines
$SED '/[äâëêïîöôüû@,]/d' $FILE_tmp # remove line with "chelou" characters
# extract ip addresses for iptables.
awk '/^([0-9]{1,3}\.){3}[0-9]{1,3}$/{print "add bl_ip_blocked " $0}' $FILE_tmp > $FILE_ip_tmp
# extract domain names for dnsmasq.
$SED -n '/^\([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}/!p' $FILE_tmp
# Retrieve max Top Level Domain for domain name synthax
#MAX_TLD=$(curl http://data.iana.org/TLD/tlds-alpha-by-domain.txt | grep -v '-' | grep -v '#' | wc -L)
#if [ $(echo $MAX_TLD | wc -c) -eq 0 ];then
# MAX_TLD=18
#fi
# search for correction egrep "([a-zA-Z0-9_-.]+\.){1,2}[a-zA-Z]{2,$MAX_TLD}" $ossi_custom_dir/domains > $FILE_tmp
}
usage="Usage: alcasar-bl.sh { -cat_choice or --cat_choice } | { -download or --download } | { -adapt or --adapt } | { -reload or --reload } | { -update_cat or --update_cat }"
nb_args=$#
args=$1
if [ $nb_args -eq 0 ]
then
args="-h"
fi
case $args in
-\? | -h* | --h*)
echo "$usage"
exit 0
;;
# Retrieve Toulouse University BL
-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
wget -P $DIR_tmp http://$BL_SERVER/blacklists/download/blacklists.tar.gz
md5sum $DIR_tmp/blacklists.tar.gz | cut -d" " -f1 > $DIR_tmp/md5sum
chown -R apache:apache $DIR_tmp
fi
;;
# enable/disable categories (used only during the alcasar install process)
-cat_choice | --cat_choice)
cat_choice
;;
# Adapt Toulouse University BL to ALCASAR architecture (dnsmasq + DG + iptables)
-adapt | --adapt)
echo -n "Adaptation process of Toulouse University blackList. Please wait : "
if [ -f $DIR_tmp/blacklists.tar.gz ] # when downloading the last version of the BL
then
# keep custom files (ossi)
for x in $(ls -1 $DIR_DG_BL | grep "^ossi-*")
do
mv $DIR_DG_BL/$x $DIR_tmp
done
rm -rf $DIR_DG_BL $DIR_IP_BL
mkdir $DIR_DG_BL $DIR_IP_BL
tar zxf $DIR_tmp/blacklists.tar.gz --directory=$DIR_DG/
chown -R dansguardian:apache $DIR_DG
chmod -R 770 $DIR_DG
# Add the two local categories (ossi-bl & ossi-wl) to the usage file
# Add the custom categories (ossi-tor_nodes) to the usage file
cat << EOF >> $DIR_DG_BL/global_usage
NAME: ossi-bl
DEFAULT_TYPE: black
SOURCE: ALCASAR Team
DESC FR: sites blacklistés ajoutés localement
DESC EN: blacklisted sites add locally
NAME FR: ossi-bl
NAME EN: ossi-bl
NAME: ossi-wl
DEFAULT_TYPE: white
SOURCE: ALCASAR Team
DESC FR: sites autorisés ajoutés localement
DESC EN: whitelisted sites add locally
NAME FR: ossi-wl
NAME EN: ossi-wl
NAME: ossi-bl-tor_nodes
DEFAULT_TYPE: black
SOURCE: ALCASAR Team
DESC FR: Adresses IP des noeuds (routeurs) d'entrée du réseau TOR
DESC EN: IP addresses of input TOR nodes (routers)
NAME FR: Noeuds TOR
NAME EN: TOR nodes
EOF
# Retrieve custom files (ossi)
for x in $(ls -1 $DIR_tmp | grep "^ossi-*")
do
mv $DIR_tmp/$x $DIR_DG_BL
done
fi
rm -f $BL_CATEGORIES $WL_CATEGORIES
rm -rf $DIR_DNS_BL $DIR_DNS_WL $DIR_IP_BL $DIR_IP_WL
rm -rf $DIR_DNS_BL_ENABLED $DIR_DNS_WL_ENABLED $DIR_IP_BL_ENABLED $DIR_IP_WL_ENBALED
touch $BL_CATEGORIES $WL_CATEGORIES
mkdir $DIR_DNS_BL $DIR_DNS_WL $DIR_IP_BL $DIR_IP_WL
mkdir $DIR_DNS_BL_ENABLED $DIR_DNS_WL_ENABLED $DIR_IP_BL_ENABLED $DIR_IP_WL_ENBALED
find $DIR_DG_BL/ -type f -name domains > $FILE_tmp # retrieve directory name where a domain file exist
$SED "s?\/domains??g" $FILE_tmp # remove "/domains" suffix
for dir_categorie in `cat $FILE_tmp` # create the blacklist and the whitelist files
do
categorie=`echo $dir_categorie|cut -d "/" -f6`
categorie_type=`grep -A1 ^NAME:[$' '$'\t']*$categorie$ $DIR_DG_BL/global_usage | grep ^DEFAULT_TYPE | cut -d":" -f2 | tr -d " \t"`
if [ "$categorie_type" == "white" ]
then
echo "$dir_categorie" >> $WL_CATEGORIES
else
echo "$dir_categorie" >> $BL_CATEGORIES
fi
done
rm -f $FILE_tmp
# Verify that the enabled categories are effectively in the BL (need after an update of the BL)
for ENABLE_CATEGORIE in `cat $BL_CATEGORIES_ENABLED`
do
ok=`grep /$ENABLE_CATEGORIE$ $BL_CATEGORIES|wc -l`
if [ $ok != "1" ]
then
$SED "/^$ENABLE_CATEGORIE$/d" $BL_CATEGORIES_ENABLED
fi
done
# Verify that the enabled categories are effectively in the WL (need after an update of the WL)
for ENABLE_CATEGORIE in `cat $WL_CATEGORIES_ENABLED`
do
ok=`grep /$ENABLE_CATEGORIE$ $WL_CATEGORIES|wc -l`
if [ $ok != "1" ]
then
$SED "/^$ENABLE_CATEGORIE$/d" $WL_CATEGORIES_ENABLED
fi
done
# Creation of DNSMASQ and Iptables BL and WL
for LIST in $BL_CATEGORIES $WL_CATEGORIES # for each list (bl and wl)
do
for PATH_FILE in `cat $LIST` # for each category
do
DOMAIN=`basename $PATH_FILE`
echo -n "$DOMAIN, "
if [ ! -f $PATH_FILE/urls ] # create 'urls' file if it doesn't exist
then
touch $PATH_FILE/urls
chown dansguardian:apache $PATH_FILE/urls
fi
cp $PATH_FILE/domains $FILE_tmp
clean_split # clean ossi custom files & split them for dnsmasq and for iptables
if [ "$LIST" == "$BL_CATEGORIES" ]
then
# adapt to the dnsmasq syntax for the blacklist
$SED "s?.*?address=/&/$PRIVATE_IP?g" $FILE_tmp
mv $FILE_tmp $DIR_DNS_BL/$DOMAIN.conf
mv $FILE_ip_tmp $DIR_IP_BL/$DOMAIN
else
# adapt to the dnsmasq syntax for the whitelist
$SED "s?.*?server=/&/$DNS1?g" $FILE_tmp
mv $FILE_tmp $DIR_DNS_WL/$DOMAIN.conf
fi
done
done
echo
chown -R root:apache $BL_CATEGORIES $WL_CATEGORIES $BL_CATEGORIES_ENABLED $WL_CATEGORIES_ENABLED $DIR_DNS_BL $DIR_DNS_WL $DIR_IP_BL $DIR_IP_WL
chmod 770 $DIR_DNS_BL $DIR_DNS_WL $DIR_IP_BL $DIR_IP_WL
chmod -f 660 $BL_CATEGORIES $WL_CATEGORIES $BL_CATEGORIES_ENABLED $WL_CATEGORIES_ENABLED $DIR_DNS_BL/* $DIR_DNS_WL/* $DIR_IP_BL/* $DIR_IP_WL/*
rm -f $FILE_tmp $FILE_ip_tmp
rm -rf $DIR_tmp
;;
# Rsync the categories which are listed in "/usr/local/etc/update_cat.conf". Cron run this function every 12h
-update_cat | --update_cat)
if [ $(cat /usr/local/etc/update_cat.conf | wc -l) -ne 0 ]
then
echo -n "Updating categories in /usr/local/etc/update_cat.conf ..."
cat /usr/local/etc/update_cat.conf | while read LIGNE_RSYNC
do
CATEGORIE=$(echo $LIGNE_RSYNC | cut -d' ' -f1)
URL=$(echo $LIGNE_RSYNC | cut -d' ' -f2)
PATH_FILE=$(find $DIR_DG_BL/ -type d -name $CATEGORIE) # retrieve directory name of the category
rsync -rv $URL $(dirname $PATH_FILE ) #rsync inside of the blacklist directory
# Creation of DNSMASQ and Iptables BL and WL
DOMAIN=$(basename $PATH_FILE)
cp $PATH_FILE/domains $FILE_tmp
clean_split # clean ossi custom files & split them for dnsmasq and for iptables
black=`grep black $PATH_FILE/usage |wc -l`
if [ $black == "1" ]
then
# adapt to the dnsmasq syntax for the blacklist
$SED "s?.*?address=/&/$PRIVATE_IP?g" $FILE_tmp
mv $FILE_tmp $DIR_DNS_BL/$DOMAIN.conf
mv $FILE_ip_tmp $DIR_IP_BL/$DOMAIN
else
# adapt to the dnsmasq syntax for the whitelist
$SED "s?.*?server=/&/$DNS1?g" $FILE_tmp
mv $FILE_tmp $DIR_DNS_WL/$DOMAIN.conf
mv $FILE_ip_tmp $DIR_IP_WL/$DOMAIN
fi
rm -f $FILE_tmp $FILE_ip_tmp
done
/usr/bin/systemctl restart dnsmasq-whitelist
/usr/bin/systemctl restart dnsmasq-blacklist
/usr/bin/systemctl restart dansguardian
/usr/local/bin/alcasar-iptables.sh
else
echo -n "/usr/local/etc/update_cat.conf is empty ..."
fi
echo
;;
# reload when selected categories are changed or when ossi change his custom files
-reload | --reload)
# for DG
cat_choice
# for dnsmasq (rehabited domain names)
if [ `wc -w $DIR_DG/exceptionsitelist|cut -d " " -f1` != "0" ]
then
rm -f $DIR_DNS_BL_ENABLED/authorized-ossi-bl $DIR_DNS_BL/authorized-ossi-bl.conf
touch $DIR_DNS_BL/authorized-ossi-bl.conf
for i in `cat $DIR_DG/exceptionsitelist`
do
$SED "/$i/d" $DIR_DNS_BL/*
echo "server=/$i/#" >> $DIR_DNS_BL/authorized-ossi-bl.conf
done
ln -s $DIR_DNS_BL/authorized-ossi-bl.conf $DIR_DNS_BL_ENABLED/authorized-ossi-bl
fi
# adapt OSSI BL & WL custom files
for dir in $DIR_DNS_BL_ENABLED $DIR_DNS_WL_ENABLED $DIR_IP_BL_ENABLED $DIR_IP_WL_ENBALED $DIR_DNS_BL $DIR_DNS_WL $DIR_IP_BL $DIR_IP_WL
do
rm -f $dir/ossi*
done
find $DIR_DG_BL/ -type f -name domains | grep ossi- > $FILE_tmp # retrieve ossi directories name where a domain file exist
$SED "s?\/domains??g" $FILE_tmp # remove "/domains" suffix
for ossi_custom_dir in `cat $FILE_tmp` # create the blacklist and the whitelist files
do
chown -R root:apache $ossi_custom_dir
chmod 770 $ossi_custom_dir
ossi_categorie=`echo $ossi_custom_dir|cut -d "/" -f6`
short_categorie=`echo "$ossi_categorie" | cut -d"-" -f2`
if [ $short_categorie == "bl" ]
then
categorie_type="black"
else
categorie_type="white"
fi
$SED "s/\r//" $ossi_custom_dir/domains $ossi_custom_dir/urls # remove Windows <CR> from custom file
cp $ossi_custom_dir/domains $FILE_tmp
clean_split # clean ossi custom files & split them for dnsmasq and for iptables
if [ $categorie_type == "white" ]
then
# adapt the file to the dnsmasq syntax and enable it if needed
# for the WL
$SED "s?.*?server=/&/$DNS1?g" $FILE_tmp
mv $FILE_tmp $DIR_DNS_WL/$ossi_categorie.conf
mv $FILE_ip_tmp $DIR_IP_WL/$ossi_categorie
enabled=`grep ^$ossi_categorie$ $WL_CATEGORIES_ENABLED | wc -l`
if [ $enabled == "1" ]
then
$SED "/\/$ossi_categorie$/d" $WL_CATEGORIES
$SED "1i\/etc\/dansguardian\/lists\/blacklists\/$ossi_categorie" $WL_CATEGORIES
ln -sf $DIR_DNS_WL/$ossi_categorie.conf $DIR_DNS_WL_ENABLED/$ossi_categorie
ln -sf $DIR_IP_WL/$ossi_categorie $DIR_IP_WL_ENABLED/$ossi_categorie
fi
else
# for the BL
$SED "s?.*?address=/&/$PRIVATE_IP?g" $FILE_tmp
mv $FILE_tmp $DIR_DNS_BL/$ossi_categorie.conf
mv $FILE_ip_tmp $DIR_IP_BL/$ossi_categorie
enabled=`grep ^$ossi_categorie$ $BL_CATEGORIES_ENABLED | wc -l`
if [ $enabled == "1" ]
then
$SED "/\/$ossi_categorie$/d" $BL_CATEGORIES
$SED "1i\/etc\/dansguardian\/lists\/blacklists\/$ossi_categorie" $BL_CATEGORIES
ln -sf $DIR_DNS_BL/$ossi_categorie.conf $DIR_DNS_BL_ENABLED/$ossi_categorie
ln -sf $DIR_IP_BL/$ossi_categorie $DIR_IP_BL_ENABLED/$ossi_categorie
fi
fi
done
for file in $BL_CATEGORIES $BL_CATEGORIES_ENABLED $WL_CATEGORIES $WL_CATEGORIES_ENABLED
do
sort +0.0 -0.2 $file -o $FILE_tmp
mv $FILE_tmp $file
chown root:apache $file
chmod 660 $file
done
chown -R root:apache $DIR_DNS_BL $DIR_DNS_WL $DIR_IP_BL $DIR_IP_WL
chmod 660 $DIR_DNS_BL/* $DIR_DNS_WL/* $DIR_IP_BL/* $DIR_IP_WL/*
if [ "$PARENT_SCRIPT" != "alcasar-conf.sh" ] # don't launch on install stage
then
/usr/bin/systemctl restart dnsmasq-blacklist
/usr/bin/systemctl restart dnsmasq-whitelist
/usr/local/bin/alcasar-iptables.sh
fi
;;
*)
echo "Argument inconnu :$1";
echo "$usage"
exit 1
;;
esac