#Author: Piotr Wojcieszonek #e-mail: piotr@wojcieszonek.pl # Copyright 24.03.2016 by Piotr Wojcieszonek require 'lib/dhcp' module Lib module DHCP class Message class Offer < Message def initialize(htype: 1, hlen: 6, hops: 0, xid: nil, secs: 0, flags: 0, ciaddr: 0, yiaddr: 0, siaddr: 0, giaddr: 0, chaddr: , sname: '.', file: '.', options: nil) super( :op => BOOTREPLY, :htype => htype, :hlen => hlen, :hops => hops, :xid => xid, :secs => secs, :flags => flags, :ciaddr => ciaddr, :yiaddr => yiaddr, :siaddr => siaddr, :giaddr => giaddr, :chaddr => chaddr, :sname => sname, :file => file ) if options.is_a? Array or options.is_a? Lib::DHCP::Options options.each { |option| self.options.add option unless option.oid.to_i == Option::MESSAGE_TYPE } elsif options.is_a? Lib::DHCP::Option self.options.add options elsif !options.nil? raise TypeError, "Can't convert #{options.class.name} to Lib::DHCP::Option" end self.options.add Lib::DHCP::Option53.new(OFFER) end def pack # noinspection RubyResolve self.option53 = OFFER self.op = BOOTREPLY sanity_check super end def self.unpack(packet) res = super(packet) raise TypeError, "No implicit conversion of #{res.class.name} into #{self.class.name}" unless res.is_a? self.class res end protected :op= # noinspection RubyResolve protected :option53= protected def sanity_check raise Lib::DHCP::SanityCheck::Offer, "No YIADDR in DHCP Offer\n #{self.to_s}" if yiaddr.to_i == 0 # noinspection RubyResolve raise Lib::DHCP::SanityCheck::Offer, "No Max Lease Time Option set for DHCP Offer Message\n #{self.to_s}" if option51.nil? # noinspection RubyResolve raise Lib::DHCP::SanityCheck::Offer, "No Server Identifier Option set for DHCP Offer Message\n #{self.to_s}" if option54.nil? # noinspection RubyResolve raise Lib::DHCP::SanityCheck::Offer, "Requested IP Address Option set for DHCP Offer Message\n #{self.to_s}" unless option50.nil? # noinspection RubyResolve raise Lib::DHCP::SanityCheck::Offer, "Parameter Request List Option set for DHCP Offer Message\n #{self.to_s}" unless option55.nil? # noinspection RubyResolve raise Lib::DHCP::SanityCheck::Offer, "Maximum Message Size Option set for DHCP Offer Message\n #{self.to_s}" unless option57.nil? end end end end end