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-ifndef(ARPHRD_ETHER). | ||
-define(ARPHRD_ETHER, 1). | ||
-endif. | ||
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-define(ARPOP_RREQUEST, 3). % RARP request | ||
-define(ARPOP_RREPLY, 4). % RARP reply | ||
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-record(rarp, { | ||
hrd = ?ARPHRD_ETHER :: pkt:uint16_t(), | ||
pro = ?ETH_P_IP :: pkt:uint16_t(), | ||
hln = 6 :: pkt:uint8_t(), | ||
pln = 4 :: pkt:uint8_t(), | ||
op = ?ARPOP_RREPLY :: pkt:uint16_t(), | ||
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sha = <<0,0,0,0,0,0>> :: <<_:48>>, | ||
sip = {127,0,0,1} :: pkt:in_addr(), | ||
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tha = <<0,0,0,0,0,0>> :: <<_:48>>, | ||
tip = {127,0,0,1} :: pkt:in_addr() | ||
}). |
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%% Copyright (c) 2009-2017, Michael Santos <[email protected]> | ||
%% 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 author 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
%% "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
%% LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | ||
%% FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | ||
%% COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
%% INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | ||
%% BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
%% LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
%% CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
%% LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN | ||
%% ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
%% POSSIBILITY OF SUCH DAMAGE. | ||
-module(pkt_rarp). | ||
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-include("pkt_ether.hrl"). | ||
-include("pkt_rarp.hrl"). | ||
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-export([codec/1]). | ||
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codec(<<Hrd:16, Pro:16, | ||
Hln:8, Pln:8, Op:16, | ||
Sha:6/bytes, | ||
SA1:8, SA2:8, SA3:8, SA4:8, | ||
Tha:6/bytes, | ||
DA1:8, DA2:8, DA3:8, DA4:8, | ||
Payload/binary>> | ||
) -> | ||
{#rarp{ | ||
hrd = Hrd, pro = Pro, | ||
hln = Hln, pln = Pln, op = Op, | ||
sha = Sha, | ||
sip = {SA1,SA2,SA3,SA4}, | ||
tha = Tha, | ||
tip = {DA1,DA2,DA3,DA4} | ||
}, Payload}; | ||
codec(#rarp{ | ||
hrd = Hrd, pro = Pro, | ||
hln = Hln, pln = Pln, op = Op, | ||
sha = Sha, | ||
sip = {SA1,SA2,SA3,SA4}, | ||
tha = Tha, | ||
tip = {DA1,DA2,DA3,DA4} | ||
}) -> | ||
<<Hrd:16, Pro:16, | ||
Hln:8, Pln:8, Op:16, | ||
Sha:6/bytes, | ||
SA1:8, SA2:8, SA3:8, SA4:8, | ||
Tha:6/bytes, | ||
DA1:8, DA2:8, DA3:8, DA4:8>>. |
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-module(pkt_rarp_tests). | ||
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-include_lib("pkt/include/pkt.hrl"). | ||
-include_lib("eunit/include/eunit.hrl"). | ||
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codec_test_() -> | ||
[ | ||
decode(), | ||
encode() | ||
]. | ||
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packet() -> | ||
<<16#ff, 16#ff, 16#ff, 16#ff, 16#ff, 16#ff, 16#00, 16#23, | ||
16#20, 16#a8, 16#84, 16#c2, 16#80, 16#35, 16#00, 16#01, | ||
16#08, 16#00, 16#06, 16#04, 16#00, 16#03, 16#00, 16#23, | ||
16#20, 16#a8, 16#84, 16#c2, 16#00, 16#00, 16#00, 16#00, | ||
16#00, 16#23, 16#20, 16#a8, 16#84, 16#c2, 16#00, 16#00, | ||
16#00, 16#00>>. | ||
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decode() -> | ||
[_Ether, RArp, <<>>] = pkt:decapsulate(packet()), | ||
?_assertEqual( | ||
{rarp,1,2048,6,4,3, | ||
<<0,35,32,168,132,194>>, | ||
{0,0,0,0}, | ||
<<0,35,32,168,132,194>>, | ||
{0,0,0,0}}, | ||
RArp | ||
). | ||
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encode() -> | ||
<<_Ether:14/bytes, Packet/bytes>> = packet(), | ||
{Header, Payload} = pkt:rarp(Packet), | ||
?_assertEqual(Packet, <<(pkt:rarp(Header))/binary, Payload/binary>>). |