mirror of https://github.com/cmur2/dyndnsd.git
128 lines
3.1 KiB
Ruby
128 lines
3.1 KiB
Ruby
#!/usr/bin/env ruby
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require 'logger'
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require 'ipaddr'
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require 'json'
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require 'yaml'
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require 'rack'
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require 'dyndnsd/generator/bind'
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require 'dyndnsd/updater/command_with_bind_zone'
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require 'dyndnsd/responder/rest_style'
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require 'dyndnsd/database'
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require 'dyndnsd/version'
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module Dyndnsd
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def self.logger
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@logger
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end
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def self.logger=(logger)
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@logger = logger
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end
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class LogFormatter
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def call(lvl, time, progname, msg)
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"%s: %s\n" % [lvl, msg.to_s]
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end
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end
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class Daemon
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def initialize(config, db, updater, responder)
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@users = config['users']
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@db = db
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@updater = updater
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@responder = responder
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@db.load
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@db['serial'] ||= 1
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@db['hosts'] ||= {}
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(@db.save; update) if @db.changed?
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end
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def update
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@updater.update(@db)
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end
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def call(env)
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return @responder.response_for(:method_forbidden) if env["REQUEST_METHOD"] != "GET"
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return @responder.response_for(:not_found) if env["PATH_INFO"] != "/nic/update"
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params = Rack::Utils.parse_query(env["QUERY_STRING"])
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return @responder.response_for(:hostname_missing) if not params["hostname"]
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hostname = params["hostname"]
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# Check if hostname(s) match rules
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#return @responder.response_for(:hostname_malformed) if XY
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user = env["REMOTE_USER"]
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return @responder.response_for(:host_forbidden) if not @users[user]['hosts'].include? hostname
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# no myip?
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if not params["myip"]
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params["myip"] = env["REMOTE_ADDR"]
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end
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# malformed myip?
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begin
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IPAddr.new(params["myip"], Socket::AF_INET)
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rescue ArgumentError
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params["myip"] = env["REMOTE_ADDR"]
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end
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myip = params["myip"]
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@db['hosts'][hostname] = myip
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if @db.changed?
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@db['serial'] += 1
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@db.save
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update
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return @responder.response_for(:good)
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end
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@responder.response_for(:nochg)
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end
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def self.run!
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Dyndnsd.logger = Logger.new(STDOUT)
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Dyndnsd.logger.formatter = LogFormatter.new
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if ARGV.length != 1
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puts "Usage: dyndnsd config_file"
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exit 1
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end
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config_file = ARGV[0]
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if not File.file?(config_file)
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Dyndnsd.logger.fatal "Config file not found!"
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exit 1
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end
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Dyndnsd.logger.info "DynDNSd version #{Dyndnsd::VERSION}"
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Dyndnsd.logger.info "Using config file #{config_file}"
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config = YAML::load(File.open(config_file, 'r') { |f| f.read })
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db = Database.new(config['db_file'])
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updater = Updater::CommandWithBindZone.new(config['updater_params']) if config['updater'] == 'command_with_bind_zone'
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responder = Responder::RestStyle.new
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app = Daemon.new(config, db, updater, responder)
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app = Rack::Auth::Basic.new(app, "DynDNS") do |user,pass|
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(config['users'].has_key? user) and (config['users'][user]['password'] == pass)
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end
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Signal.trap('INT') do
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Rack::Handler::WEBrick.shutdown
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end
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Rack::Handler::WEBrick.run app, :Host => config['host'], :Port => config['port']
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end
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end
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end
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