#!/bin/sh
vpn_concentrator="91.201.184.129"
vpn_keepalive_host1="RGM-VD-W7AA-100.HQ.ROOT.AD"
vpn_keepalive_host2="rgm-s-sql09.hq.root.ad"
vpn_pname="rusal.from-al.com"
vpn_ip="0.0.0.0"
vpn_newip="0.0.0.0"

sleep 33

vpnc-disconnect

pingtest1 () {
 ping -q -c1 $param1 >> /dev/null
 if [ "$?" == "0" ]; then
       echo 0 #reachable

 else
       echo 1 #not reachable
 fi
}

pingtest2 () {
 ping -q -c2 $param2 >> /dev/null
 if [ "$?" == "0" ]; then
       echo 0 #reachable

 else
       echo 1 #not reachable
 fi
}

while [ true ]; do
        param1=$vpn_concentrator;
        if [ "`pingtest1`" == "0" ]; then  #Vpn concentrator reachable
                doloop=1;
                while [ $doloop -gt 0 ]; do
                        param1=$vpn_keepalive_host1;

                        if [ "`pingtest1`" == "0" ]; then
                                sleep 300
                        else
                                param2=$vpn_keepalive_host2;
                                if [ "`pingtest2`" == "0" ]; then
                                        sleep 300
                                else
                                        doloop=0;
                                        vpnc-disconnect
                                        vpnc /etc/vpnc/vpn-rusal.conf --dpd-idle 0
                                        sleep 3
                                        if [ "`pingtest1`" != "0" ]; then
                                                sleep 10
                                        fi
                                        tundev="`ifconfig |grep tun |cut -b 1-4`"
                                        #iptables -A FORWARD -o $tundev -j ACCEPT
                                        #iptables -A FORWARD -i $tundev -j ACCEPT
                                        #vpn vserver
                                        #iptables -t nat -A POSTROUTING -o $tundev -j MASQUERADE
                                        iptables -t nat -A PREROUTING -p tcp -i $tundev --dport 3902 -j DNAT --to 192.168.7.11:3389
                                        ip route add default dev $tundev metric 9 table 202
                                        vpn_ip=$(nslookup $vpn_pname | grep -Eo '[0-9.]{7,}')
                                        vpn_newip=$(ip -o -f inet a sh $tundev | grep -Eo '[0-9.]{7,}')
                                        #vpn_newip=$(ifconfig $tundev| sed -n '2 {s/^.*inet addr:\([0-9.]*\) .*/\1/;p}')
                                        if [ "$vpn_newip" != "$vpn_ip" ]; then
                                                wget -q -O /tmp/vpnddns.log \
                                                "http://ITP-SL:KrakatuDdns01@members.dyndns.org/nic/update?hostname=$vpn_pname&myip=$vpn_newip"
                                                vpn_ip=$vpn_newip
                                                echo "$vpn_ip" > /tmp/rusalvpn.ip
                                        fi
                                        #cat /etc/hosts | grep -i -v HQ.ROOT.AD > /etc/hosts
                                        #echo "$(ping -q -c1 $vpn_keepalive_host1 | grep -Eo '[0-9.]{7,}')     $vpn_keepalive_host1" >> /etc/hosts
                                        #echo "$(ping -q -c1 $vpn_keepalive_host2 | grep -Eo '[0-9.]{7,}')      $vpn_keepalive_host2" >> /etc/hosts
                                        echo "$(date '+%F %T') /$vpn_ip" >> /tmp/vpnup.log
                                        cat /etc/vpnc/resolv.bak >> /tmp/resolv.conf
                                        #killall -1 dnsmasq
                                        sleep 9
                                fi
                        fi
                done
        else
                sleep 12;
        fi

done

return 0;