Lint fixes
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178b03e1ce
commit
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158
dns-client.rb
158
dns-client.rb
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@ -1,64 +1,65 @@
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# frozen_string_literal: true
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require "ipaddr"
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require "socket"
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require "optparse"
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require "json"
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require "securerandom"
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require "xmpp4r"
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puts ARGV
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require 'ipaddr'
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require 'socket'
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require 'optparse'
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require 'json'
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require 'securerandom'
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require 'xmpp4r'
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options = {
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sshfp: []
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}
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# rubocop:disable Metrics/BlockLength
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OptionParser.new do |opts|
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opts.banner = "usage: ${$0} [opts]"
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opts.banner = 'usage: ${$0} [opts]'
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opts.on("-i", "--interface=INTERFACE",
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"Publicly-accessible interface") do |interface|
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opts.on('-i', '--interface=INTERFACE',
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'Publicly-accessible interface') do |interface|
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options[:interface] = interface
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end
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opts.on("-d", "--domain=DOMAIN",
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"Domain on which we wish to set the new ip") do |domain|
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opts.on('-d', '--domain=DOMAIN',
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'Domain on which we wish to set the new ip') do |domain|
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options[:domain] = domain
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end
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opts.on("-s", "--server=SERVER",
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"Backplane DNS XMPP server") do |server|
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opts.on('-s', '--server=SERVER',
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'Backplane DNS XMPP server') do |server|
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options[:server] = server
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end
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opts.on("-p", "--password-file=/path/to/file",
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"File containing password for XMPP server") do |pw_file|
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opts.on('-p', '--password-file=/path/to/file',
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'File containing password for XMPP server') do |pw_file|
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options[:pw_file] = pw_file
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end
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opts.on("-4", "--ipv4",
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"Check for a public IPv4 and register with the backplane.") do
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opts.on('-4', '--ipv4',
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'Check for a public IPv4 and register with the backplane.') do
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options[:ipv4] = true
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end
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opts.on("-6", "--ipv6",
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"Check for a public IPv6 and register with the backplane.") do
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opts.on('-6', '--ipv6',
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'Check for a public IPv6 and register with the backplane.') do
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options[:ipv6] = true
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end
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opts.on("-f", "--ssh-fp=SSHFP", "SSH fingerprint to register with he backplane.") do |fp|
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opts.on('-f', '--ssh-fp=SSHFP', 'SSH fingerprint to register with he backplane.') do |sshfp|
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options[:sshfp] << sshfp
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end
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end.parse!
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# rubocop:enable Metrics/BlockLength
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raise "domain is required" unless options[:domain]
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raise "server is required" unless options[:server]
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raise "password file is required" unless options[:pw_file]
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raise "at least one of -4 or -6 required" unless (options[:ipv4] or options[:ipv6])
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raise 'domain is required' unless options[:domain]
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raise 'server is required' unless options[:server]
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raise 'password file is required' unless options[:pw_file]
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raise 'at least one of -4 or -6 required' unless options[:ipv4] || options[:ipv6]
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password = options[:pw_file]
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raise "file does not exist or is not readable: #{password}" unless File::readable?(password)
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# XMPP client for Fudo Backplane
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class XMPPClient
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def initialize(domain, hostname, server, password)
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@jid = "host-#{hostname}@#{server}"
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@ -74,7 +75,7 @@ class XMPPClient
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disconnect if connected?
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@client = Jabber::Client::new(@jid)
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@client.connect # will use SRV records
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error("failed to initialize TLS connection") unless @client.is_tls?
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error('failed to initialize TLS connection') unless @client.is_tls?
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@client.auth(@password)
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register_response_callback
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end
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@ -104,7 +105,7 @@ class XMPPClient
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@client.send(msg)
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response = receive_response(msg_id)
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puts "response: #{response}"
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response and response["status"] == "OK"
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response && response['status'] == 'OK'
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end
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def send_ip(ip)
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@ -119,7 +120,7 @@ class XMPPClient
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{
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version: 1,
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service: :dns,
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msgid: msg_id,
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msgid: msg_id,
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payload: req
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}
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end
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@ -127,16 +128,16 @@ class XMPPClient
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def ip_payload(ip)
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{
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request: ip.ipv4? ? :change_ipv4 : :change_ipv6,
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domain: @domain,
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ip: ip.to_s
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domain: @domain,
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ip: ip.to_s
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}
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end
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def sshfp_payload(fp)
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def sshfp_payload(fingerprint)
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{
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request: :change_sshfp,
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domain: @domain,
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sshfp: fp
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domain: @domain,
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sshfp: fingerprint
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}
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end
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@ -152,35 +153,36 @@ class XMPPClient
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def receive_response(msg_id)
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msg = @responses.pop
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return msg if (msg and (msg["msgid"] == msg_id.to_s))
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return msg if msg && msg['msgid'] == msg_id.to_s
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raise "failed to receive message: #{msg}"
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end
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end
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RESERVED_V4_NETWORKS = [
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"0.0.0.0/8",
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"10.0.0.0/8",
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"100.64.0.0/10",
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"127.0.0.0/8",
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"169.254.0.0/16",
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"172.16.0.0/12",
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"192.0.0.0/24",
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"192.0.2.0/24",
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"192.88.99.0/24",
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"192.168.0.0/16",
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"198.18.0.0/15",
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"198.51.100.0/24",
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"203.0.113.0/24",
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"224.0.0.0/4",
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"240.0.0.0/4",
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"255.255.255.255/32"
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'0.0.0.0/8',
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'10.0.0.0/8',
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'100.64.0.0/10',
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'127.0.0.0/8',
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'169.254.0.0/16',
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'172.16.0.0/12',
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'192.0.0.0/24',
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'192.0.2.0/24',
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'192.88.99.0/24',
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'192.168.0.0/16',
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'198.18.0.0/15',
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'198.51.100.0/24',
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'203.0.113.0/24',
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'224.0.0.0/4',
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'240.0.0.0/4',
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'255.255.255.255/32'
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].map { |ip| IPAddr.new(ip) }
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def public_ip?(ip)
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if (ip.ipv4?)
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not RESERVED_V4_NETWORKS.any? { |network| network.include? ip }
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elsif (ip.ipv6?)
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not (ip.link_local? or ip.loopback? or ip.private?)
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if ip.ipv4?
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RESERVED_V4_NETWORKS.none? { |network| network.include? ip }
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elsif ip.ipv6?
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!(ip.link_local? || ip.loopback? || ip.private?)
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else
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false
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end
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@ -190,30 +192,28 @@ def to_ipaddr(addrinfo)
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if addrinfo.ipv4?
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IPAddr.new addrinfo.ip_address
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else
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IPAddr.new(addrinfo.ip_address.split("%")[0])
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IPAddr.new(addrinfo.ip_address.split('%')[0])
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end
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end
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def local_addresses
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Socket::ip_address_list.map do |addrinfo|
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ips = Socket::ip_address_list.map do |addrinfo|
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to_ipaddr(addrinfo)
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end.select { |ip| public_ip?(ip) }
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end
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ips.select { |ip| public_ip?(ip) }
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end
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def interface_addresses(interface)
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Socket::getifaddrs.select do |ifaddr|
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ifaddr.name == interface
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end.select do |ifaddr|
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ifaddr.addr.ip? and (ifaddr.flags & Socket::IFF_MULTICAST != 0)
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end.map do |ifaddr|
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to_ipaddr(ifaddr.addr)
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end.filter do |ip|
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public_ip? ip
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ifaddrs = Socket::getifaddrs.select do |ifaddr|
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ifaddr.name == interface &&
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ifaddr.addr.ip? &&
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ifaddr.flag & Socket::IFF_MULTICAST != 0
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end
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ifaddrs.map { |ifaddr| to_ipaddr(ifaddr.addr) }.filter(:public_ip?)
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end
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def hostname
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Socket.gethostname.split(".").first
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Socket.gethostname.split('.').first
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end
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client = XMPPClient::new(options[:domain],
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@ -233,13 +233,13 @@ begin
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end
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if options[:ipv4]
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ipv4 = addrs.find { |ip| ip.ipv4? }
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ipv4 = addrs.find(:ipv4?)
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if ipv4
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puts "#{options[:server]}: #{hostname}.#{options[:domain]} IN A => #{ipv4.to_s}"
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puts "#{options[:server]}: #{hostname}.#{options[:domain]} IN A => #{ipv4}"
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if client.send_ip(ipv4)
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puts "OK"
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puts 'OK'
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else
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puts "ERROR"
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puts 'ERROR'
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success = false
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end
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else
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@ -248,13 +248,13 @@ begin
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end
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if options[:ipv6]
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ipv6 = addrs.find { |ip| ip.ipv6? }
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ipv6 = addrs.find(:ipv6?)
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if ipv6
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puts "#{options[:server]}: #{hostname}.#{options[:domain]} IN AAAA => #{ipv6.to_s}"
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puts "#{options[:server]}: #{hostname}.#{options[:domain]} IN AAAA => #{ipv6}"
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if client.send_ip(ipv6)
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puts "OK"
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puts 'OK'
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else
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puts "ERROR"
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puts 'ERROR'
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success = false
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end
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else
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@ -262,13 +262,13 @@ begin
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end
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end
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if !options[:sshfp].empty?
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unless options[:sshfp].empty?
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fps = options[:sshfp]
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puts "#{options[:server]}: #{hostname}.#{options[:domain]} IN SSHFP => #{fps}"
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if client.send_sshfp(fps)
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puts "OK"
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puts 'OK'
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else
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puts "ERROR"
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puts 'ERROR'
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success = false
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end
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end
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