Automatic reconnects to the VPN server if lost connection

vpn_credentials.sh

#!/usr/bin/expect

# + INSTALL:
#   - install fortclient: sudo apt-get install <FortiClient installation deb file>
#   - setup fortclient case x64: sudo /opt/forticlient-sslvpn/64bit/helper/setup
#   - setup fortclient case x32: sudo /opt/forticlient-sslvpn/32bit/helper/setup
#   - install: sudo apt-get install expect or sudo apt-get install ppp expect
# + USAGE:
#   - Line 13: ADD IP AND PORT BY REPLACING 'IP:PORT', USE ':' BETWEEN IP AND PORT
#   - Line 13: ADD VPN USER BY REPLACING 'USER'
#   - Line 15: ADD PASSWORD BY REPLACING 'PASS'

spawn /opt/forticlient-sslvpn/64bit/forticlientsslvpn_cli --server IP:PORT --vpnuser USER
expect "Password for VPN:"
send "PASS\r"
expect "Would you like to connect to this server? (Y/N)"
send "Y\r"
interact

vpn_manager.sh

#!/bin/bash

# + INSTALL:
#   - install fortclient: sudo apt-get install <FortiClient installation deb file>
#   - setup fortclient, case x64: sudo /opt/forticlient-sslvpn/64bit/helper/setup
#   - setup fortclient, case x32: sudo /opt/forticlient-sslvpn/32bit/helper/setup
#   - install expect packge: sudo apt-get install expect or sudo apt-get install ppp expect

address=IP # ADD IP BY REPLACING 'IP' TO CHECK IF VPN IS ONLINE

internet=1
_mydir="`pwd`/vpn_credentials.sh"
while true;
do
    echo -n $(date +"%a, %b %d, %r") "-- " 
    ping -c 1 ${address} > /tmp/ping.$
    if [[ $? -ne 0 ]]; then
        if [[ ${internet} -eq 1 ]]; then
            echo -n "Internet DOWN"
	    # re-start system
	    screen -X -S vpn quit
	    screen -dmS vpn bash -c "$_mydir" '; exec bash'
        else
            echo -n "... still down"
	    # re-start system
	    screen -X -S vpn quit
	    screen -dmS vpn bash -c "$_mydir" '; exec bash'
        fi
        internet=0
    else
        if [[ ${internet} -eq 0 ]]; then
	    echo -n "... Internet back up"
        fi
        internet=1
    fi   
    cat /tmp/ping.$ | head -2 | tail -1
    sleep 180;
done