blocking ads using unbound

fake_zone_generator.rb

#!/usr/bin/env ruby

# script generates fake zones to plug into unbound in order to block some ads sites.

require 'open-uri'

class FakeZoneGenerator

  LIST_URL = 'http://pgl.yoyo.org/adservers/serverlist.php?hostformat=nohtml&showintro=0'
  IPV4_ADDR = '127.0.0.1'
  IPV6_ADDR = '::1'

  def self.generate
    list = open(LIST_URL).read
    conf = []
    list.each_line do |line|
      host = line.strip
      conf << %{local-zone: "#{host}" redirect}
      conf << %{local-data: "#{host} A #{IPV4_ADDR}"}
      conf << %{local-data: "#{host} AAAA #{IPV6_ADDR}"}
    end
    conf.join("\n")
  end
end

if $0 == __FILE__
  puts FakeZoneGenerator.generate
end