dodi.rb

#!/usr/bin/env ruby
require 'open-uri'
require 'socket'
require 'net/http'
require 'net/https'

p Time.now.strftime("%d/%m/%Y %H:%M")

domain = '...'
current_ip = open('http://whatismyip.akamai.com').read
resolved_ip = IPSocket::getaddress( "..." )

do_record_id = ".."
do_client_id = "..."
do_api_key = "..."
$do_request_url = "/domains/" + domain + "/records/" + do_record_id + "/edit?client_id=" + do_client_id + "&api_key=" + do_api_key + "&data=" + current_ip

def update_ip( current_ip )
  http = Net::HTTP.new('api.digitalocean.com', 443)
  http.use_ssl = true
  result = http.get( $do_request_url )
  p result.read_body
end

if current_ip != resolved_ip
  p "dont match" + current_ip + resolved_ip
  update_ip( current_ip )
else
  p "IPs match. Doing nothing..."
end