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%% Copyright (c) 2015 Peter Morgan <peter.james.morgan@gmail.com> |
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%% |
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%% Licensed under the Apache License, Version 2.0 (the "License"); |
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%% you may not use this file except in compliance with the License. |
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%% You may obtain a copy of the License at |
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%% |
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%% http://www.apache.org/licenses/LICENSE-2.0 |
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%% |
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%% Unless required by applicable law or agreed to in writing, software |
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%% distributed under the License is distributed on an "AS IS" BASIS, |
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%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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%% See the License for the specific language governing permissions and |
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%% limitations under the License. |
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-module(pcapng_ethernet). |
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-export([decode/1]). |
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-define(IPV4, 16#0800). |
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-define(IPV6, 16#86DD). |
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-define(ARP, 16#0806). |
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decode(<<_:48, _:48, ?IPV4:16, _/binary>> = Frame) -> |
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decode(Frame, ip, pcapng_ip); |
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decode(<<_:48, _:48, ?IPV6:16, _/binary>> = Frame) -> |
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decode(Frame, ip, pcapng_ip); |
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decode(<<_:48, _:48, ?ARP:16, _/binary>> = Frame) -> |
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decode(Frame, arp, pcapng_arp); |
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decode(Frame) -> |
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#{unknown => Frame}. |
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decode(<<Destination:48, Source:48, _:16, IP/binary>>, Protocol, Decoder) -> |
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#{Protocol => Decoder:decode(IP), |
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destination => integer_to_binary(Destination, 16), |
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source => integer_to_binary(Source, 16)}. |