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#!/bin/sh
# 2024-05-26
# lastmod: 2024-09-08
# Dominic Reich
BFILE=/srv/http/blocked.txt
IPFILE=~/ips
COUNT=$(wc -l ~/ips | cut -d' ' -f1)
if [[ $USER == "root" ]]; then
echo >&2 "User must not be root! Exiting"
exit 1
fi
OLDNUM=$(sudo ipset --terse -L | grep "Number of entries:" | cut -d: -f2 | xargs)
while read ip; do sudo ipset -exist -A badips "$ip"; done < $IPFILE
FILEBACKUP=14
if [ ${FILEBACKUP} -ne 0 ]; then
sudo cp ${BFILE} ${BFILE}.$(date +%Y%m%d)
fi
BACKUPCOUNT=$(ls ${BFILE}* | wc -l)
BACKUPSTODELETE=$(expr ${BACKUPCOUNT} - ${FILEBACKUP})
if [ ${BACKUPCOUNT} -gt ${FILEBACKUP} ]; then
for f in $(ls -tr ${BFILE}.* | head -${BACKUPSTODELETE})
do
sudo rm ${f}
done
fi
# save to blocklist file in webroot
sudo ipset -output save -L | grep add | awk '{ print $3 }' | sort -g | sudo tee ${BFILE} 1>/dev/null
# save to /etc/ipset.conf
sudo ipset save -file /etc/ipset.conf
# Test if current ip is in the badips set
# sudo ipset -q -T badips $(who | tail -1 | awk -F '[()]' '{ print $2 }')
sudo ipset -T badips $(who | tail -1 | awk -F '[()]' '{ print $2 }')
#sudo ipset --terse -L
NEWNUM=$(sudo ipset --terse -L | grep "Number of entries:" | cut -d: -f2 | xargs)
rm -f $IPFILE
echo "Added $((${NEWNUM}-${OLDNUM}))/${COUNT} IPs (${OLDNUM}${NEWNUM})"