6Jul/090
Ruby Dynamic DNS Script for Slicehost
I know everyone and there mother has written one of these, so I guess I'm now my mother. Run this as a cron to enable a pretty cheapo dynamic DNS via Slicehost. You'll need the ActiveResource gem to use it.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | #! /usr/bin/env ruby # */5 * * * * /usr/bin/dynamicdns.rb require 'rubygems' require 'activeresource' require 'open-uri' # Configure your stuff @api_key = 'YOUR_API_KEY' @record_id = 1337 #the record ID you are updating @ttl = 10 * 60 #ten minutes, yeah sure. @record_type = 'A' @record_name = 'vpn' @ip_site = 'http://checkip.dyndns.org/' @ip_path = '/tmp/lastip' @log = '/tmp/lastip.log' API_SITE = 'https://#{@api_key}@api.slicehost.com/' class Record < ActiveResource::Base;self.site = API_SITE;end; # Check the last ip address @last_ip = File.exist?(@ip_path) ? File.read(@ip_path).strip : '' begin @ip = open(@ip_site){|f| f.read}.match(/[0-9.]+/)[0] rescue Exception File.open(@log,'a+'){|f| f.puts "#{Time.now} [ERROR] - Failed to open #{@ip_site}"} exit(1) end # Update the email address if @ip != @last_ip File.open(@ip_path,'w+'){|f| f.puts @ip} record = Record.find(@record_id) record.name = @record_name record.record_type = @record_type record.data = @ip record.ttl = @ttl record.save File.open(@log,'a+'){|f| f.puts "#{Time.now} [INFO] - IP updated: #{@ip}"} else File.open(@log,'a+'){|f| f.puts "#{Time.now} [INFO] - IP did not change"} end |
