Created
September 23, 2011 09:40
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Parser for Amazon EC2 Public IP Range Announcements
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#!/usr/bin/env ruby | |
# Parser for Amazon EC2 Public IP Range Announcements | |
# Author: Christoph Thiel <cthiel@suse.com> | |
# Date: 2011-09-23 | |
require 'rubygems' | |
require 'bundler/setup' | |
require 'nokogiri' | |
require 'open-uri' | |
require 'netaddr' | |
regexp = /(US East|US West|EU|Singapore|Tokyo)|(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\/\d{1,2})/ | |
if ARGV.first.nil? | |
puts "Usage:\n ./ec2-ip-ranger.rb https://forums.aws.amazon.com/ann.jspa?annID=1182" | |
exit 1 | |
end | |
url = ARGV.first | |
page = Nokogiri::HTML(open(url)) | |
debug = ARGV.last.eql?('-d') | |
region_map = { 'US East' => 'us-east-1', | |
'US West' => 'us-west-1', | |
'EU' => 'eu-west-1', | |
'Singapore' => 'ap-southeast-1', | |
'Tokyo' => 'ap-northeast-1' | |
} | |
ip_map = {} | |
size_map = {} | |
current_region = '' | |
page.css(".jive-body").text.strip.gsub(/\\n/,' ').scan(regexp) do |match| | |
if match[1].nil? | |
if !current_region.empty? and debug | |
puts region_map[current_region] + ": " + size_map[region_map[current_region]].to_s + " hosts" | |
end | |
current_region = match[0] | |
ip_map.merge!({region_map[current_region] => []}) | |
size_map.merge!({region_map[current_region] => 0}) | |
elsif match[0].nil? | |
ip_map[region_map[current_region]] << match[1] | |
size_map[region_map[current_region]] += NetAddr::CIDR.create(match[1]).size | |
puts region_map[current_region] + ": " + match[1] if debug | |
end | |
end | |
puts region_map[current_region] + ": " + size_map[region_map[current_region]].to_s + " hosts" if debug | |
unless debug | |
ip_map.each do |region, ips| | |
puts "[#{region}]" | |
sorted_ips = ips.sort_by{|i| i.split('.').first.to_i }.join(' ') | |
puts "public-ips=\"#{sorted_ips}\"" | |
end | |
end |
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source :rubygems | |
gem 'nokogiri' | |
gem 'netaddr' |
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