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#!/bin/bash
# This script updates Clamav definitions with data from URLhaus (https://urlhaus.abuse.ch/api/#clamav)
#
# !!! To receive best protection, you should setup a cronjob that executes this script every minute !!!
#
# Please set up the following variables to fit your system
CLAMDIR="/var/lib/clamav"
CLAMUSER="clamav"
CLAMGROUP="clamav"
# Don't change anything below this line
RELOAD=0
lockfile -r 0 /tmp/local.the.lock 2>/dev/null || exit 1
rm -rf /tmp/urlhaus
mkdir /tmp/urlhaus
curl -s https://urlhaus.abuse.ch/downloads/urlhaus.ndb -o /tmp/urlhaus/urlhaus.ndb
if [ $? -eq 0 ]; then
clamscan --quiet -d /tmp/urlhaus /tmp/urlhaus 2>&1 >/dev/null
if [ $? -eq 0 ]; then
if [ -f "$CLAMDIR"/urlhaus.ndb ]; then
MD5old=`md5sum "$CLAMDIR"/urlhaus.ndb`
MD5new=`md5sum /tmp/urlhaus/urlhaus.ndb`
if ! [ "$MD5old" = "$MD5new" ]; then
# Updated file
cp /tmp/urlhaus/urlhaus.ndb $CLAMDIR
chown $CLAMUSER.$CLAMGROUP "$CLAMDIR"/urlhaus.ndb
RELOAD=1
fi
else
# Looks like it's the first run
cp /tmp/urlhaus/urlhaus.ndb $CLAMDIR
chown $CLAMUSER.$CLAMGROUP "$CLAMDIR"/urlhaus.ndb
RELOAD=1
fi
fi
fi
if [ $RELOAD -eq 1 ]; then
clamdscan --reload
fi
rm -rf /tmp/urlhaus
rm -f /tmp/local.the.lock
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