metasploit-framework/lib/racket/l2/eightotwodotthree.rb

# $Id: eightotwodotthree.rb 14 2008-03-02 05:42:30Z warchild $
#
# Copyright (c) 2008, Jon Hart 
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of the <organization> nor the
#       names of its contributors may be used to endorse or promote products
#       derived from this software without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY Jon Hart ``AS IS'' AND ANY
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#
module Racket
module L2
# 802.3 Ethernet.  Should always be followed by an LLC header
class EightOTwoDotThree < RacketPart
  # Destination MAC address
  hex_octets :dst_mac, 48
  # Source MAC address
  hex_octets :src_mac, 48
  # Length of the payload 
  unsigned :length, 16
  # Payload
  rest :payload

  # Fix this layer up prior to sending.  For 802.3, just adjusts +length+
  def fix!
    self.length = self.payload.length
  end
end
end
end
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