107 lines
3.0 KiB
Ruby
107 lines
3.0 KiB
Ruby
# $Id: bootp.rb 14 2008-03-02 05:42:30Z warchild $
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#
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# Copyright (c) 2008, Jon Hart
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the <organization> nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY Jon Hart ``AS IS'' AND ANY
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# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL Jon Hart BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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module Racket
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module L5
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# Bootstrap Protocol -- BOOTP
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#
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# RFC951 (http://www.faqs.org/rfcs/rfc951.html)
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class BOOTP < RacketPart
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BOOTP_REQUEST = 1
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BOOTP_REPLY = 2
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# Message type
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unsigned :type, 8
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# Hardware address type
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unsigned :hwtype, 8, { :default => 1 }
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# Hardware adddress length
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unsigned :hwlen, 8, { :default => 6 }
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# Hops between client and server
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unsigned :hops, 8
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# Transaction ID
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unsigned :id, 32
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# Seceonds elapsed since client started trying to boot
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unsigned :secs, 16
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# Flags. Generally unused
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unsigned :flags, 16
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# Client IP address
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octets :cip, 32
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# "Your" (client) IP address.
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octets :yip, 32
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# Server IP address
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octets :sip, 32
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# Gateway IP address
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octets :gip, 32
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# Client hardware address
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hex_octets :chaddr, 128
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# Optional server host name
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text :server, 512
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# Boot file name
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text :file, 1024
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# Payload
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rest :payload
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def add_option(number, value)
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o = Misc::TLV.new(1,1)
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o.type = number
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o.value = value
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o.length = value.length
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@options << o.encode
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end
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def fix!
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# tack on an EOL to the options
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newpayload = @options.join + "\xff"
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# pad out to 64 bytes
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while (newpayload.length != 64)
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newpayload += "\x00"
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end
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self.payload = newpayload + self.payload
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end
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def to_s
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puts "to_s"
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end
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def to_str
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puts to_str
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end
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def initialize(*args)
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@options = []
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@options << "\x63\x82\x53\x63" # magic
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super
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@autofix = false
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end
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end
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end
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end
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# vim: set ts=2 et sw=2:
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