#!/usr/bin/env ruby
#
# $Id: cdp 154 2009-12-13 19:52:32Z jhart $
#
# Send amusing CDP packets
require 'rubygems'
require 'racket'
unless (ARGV.size == 1) 
  puts "Usage: #{$0} <interface>"
  exit
end
include Racket
n = Racket::Racket.new
n.iface = ARGV[0]
n.layers[2] = L2::EightOTwoDotThree.new(Misc.randstring(14))
n.layers[2].dst_mac = "01:00:0c:cc:cc:cc"
n.layers[2].length = 0
n.layers[3] = L2::LLC.new()
n.layers[4] = L2::SNAP.new()
n.layers[4].pid = 0x2000
n.layers[5] = L3::CDP.new()
n.layers[5].version = 1
n.layers[5].add_field(1, "CDP, FTW!")
n.layers[5].add_field(3, "PetabitEthernet0/1")
n.layers[5].add_field(5, "Some really old version of IOS that nobody, except you, uses.")
n.layers[5].add_field(6, "Linux")
n.layers[5].add_field(4, "\xff\xff\xff\xff") # capabilities galore!
n.layers[5].add_field(9, "wtf.edu") # vlan management domain
n.layers[5].add_field(10, "\x00\x20")
n.layers.compact.each do |l|
  puts l.pretty
end
n.sendpacket