Script to compare NAS IP and transmission-openvpn docker IP to make sure NAS IP isn't exposed !

check_ips_synology_docker.sh

#$ sudo docker ps
#CONTAINER ID        IMAGE                                 COMMAND                  CREATED             STATUS                  PORTS                                                                    NAMES
#XXXXX        haugene/transmission-openvpn:latest   "dumb-init /etc/open…"   44 hours ago        Up 41 hours (healthy)   0.0.0.0:8888->8888/tcp, 0.0.0.0:9091->9091/tcp                           haugene-transmission-openvpn1
function notify {
	echo "ERROR"
	exit -1
}

error=0
nas_ip=$(curl -s http://whatismyip.akamai.com/)
if [[ $nas_ip =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
	echo "NAS_IP = $nas_ip"
	# send info to jeedom
	notify
else
	echo "NAS_IP hasn't been validated as IP address : $nas_ip"
	notify
	error=1
fi

container_ip=$(docker exec haugene-transmission-openvpn1 /bin/bash -c 'curl -s http://whatismyip.akamai.com/')
if [[ $nas_ip =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
	echo "Container_IP = $container_ip"
	notify
else
	echo "Container_IP hasn't been validated as IP address : $container_ip"
	notify
	error=1
fi

if [ "$nas_ip" = "$container_ip" ]; then
	echo "ERROR : same IP for both !!"
	error=1
fi

if [ $error -eq 1 ]; then
	exit -2
fi