#!/bin/bash
if [ "$1" == 'debug'  ]; then set -x; 	shift; fi
if [ "$1" == 'debug2' ]; then set -xvT; shift; fi
####################################################
# - VPNbreak -
# Track breakin attempts to openvpn from the
# openvpn.log
####################################################
#------------------------
REALPATH=`realpath $0`
WHERE=`dirname $REALPATH`
ME=`basename $REALPATH`
cd $WHERE
. ../system.conf
. ../watcher.conf
. ../common.conf
. ../common.bashlib
#------------------------

TMPFILE=$POOL/"$ME".tmp

trap cleanup	0 1 2 9 15
cleanup() {
	rm -f $TMPFILE
}

awk -v tmpfile=$TMPFILE '
/TLS Error:/	{ 
			match($0,/([0-9]{1,3}[.]{1}){3}[0-9]{1,3}/)
			bandit = substr($0,RSTART,RLENGTH)
			bandits[bandit]++
		}
END	{
		for ( bandit in bandits ) {
			count = bandits[bandit]
			printf "%3d, %-s ", count,bandit

			# Treat as a login break-in
			if ( count > 2 ) {
				printf "Banning \n" 
				system("LGinjector "bandit" VPN-Breakin")
			} else {printf "\n"}	
		}
}
' /var/log/openvpn.log* | sort -V | uniq -cd