automatically update DNSPod record with internal IP address

auto_dnspod.rb

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

class AutoDNS

  PARAMS = {
    "login_email"    => "YOUR_LOGIN_EMAIL",
    "login_password" => "YOUR_LOGIN_PASSWORD",
    "domain_id"      => YOUR_DOMAIN_ID,
    "record_id"      => YOUR_RECORD_ID,
    "sub_domain"     => "pcduino",
    "record_line"    => "默认",
    "format"         => "json",
    "value"          => ""
  }
  
  def update_ip
    ip = internal_ip
    logger.info { "set record IP: #{ip}" }

    url             = URI.parse('https://dnsapi.cn/Record.Ddns')
    http            = Net::HTTP.new(url.host, url.port)
    http.use_ssl    = true

    request = Net::HTTP::Post.new(url.path)
    request.set_form_data(PARAMS.merge value: ip)
    logger.debug { http.request(request).body }

    return true
  end


  def internal_ip
    Socket.ip_address_list.find { |intf| intf.ipv4_private? }.ip_address
  end


  private


    def logger
      @logger ||= ::Logger.new(STDOUT)
    end


end

if __FILE__ == $0
  AutoDNS.new.update_ip
end