#!/bin/bash
#
# Check if ExitVPN is working
# 1 - OK
# 0 - Failed
#

VPNCONF=$(grep -e "^AUTOSTART=" /etc/default/openvpn)
INTERFACE=$(sed -e 's/^"//' -e 's/"$//' <<< ${VPNCONF#*=})
NATIF=$(iptables -t nat -vnL | grep MASQUERADE | awk '{$1=$1};1' | cut -d' ' -f 7)
TESTIP=81.7.16.37 # gate01

if [ ! `pgrep openvpn` ]; then
    echo 0
    exit 0
fi

if [ ! -d "/sys/class/net/$INTERFACE" ]; then
    echo 0
    exit 0
fi

if ! test "$NATIF" == "$INTERFACE" ; then
    echo 0
    exit 0
fi

ping -q -I $INTERFACE $TESTIP -c 3 -i 1 -W 5 >/dev/null 2>&1
if ! test $? -eq 0; then
    echo 0
    exit 0
fi

echo 1
exit 0