mirror of
https://github.com/mfontanini/libtins
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103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
/*
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* libtins is a net packet wrapper library for crafting and
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* interpreting sniffed packets.
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*
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* Copyright (C) 2011 Nasel
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __IEEE8022_H
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#define __IEEE8022_H
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#include <stdint.h>
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#include "pdu.h"
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namespace Tins {
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/**
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* \brief Class representing a SNAP frame.
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*
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* So far only unnumbered information structure is supported.
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*/
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class SNAP : public PDU {
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public:
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/**
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* \brief Creates an instance of SNAP
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* \param child The child PDU.(optional)
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*/
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SNAP(PDU *child = 0);
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/**
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* \brief Constructor which creates a SNAP object from a buffer and adds all identifiable
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* PDUs found in the buffer as children of this one.
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* \param buffer The buffer from which this PDU will be constructed.
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* \param total_sz The total size of the buffer.
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*/
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SNAP(const uint8_t *buffer, uint32_t total_sz);
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/**
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* \brief Copy constructor.
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*/
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SNAP(const SNAP &other);
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/**
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* \brief Copy assignment operator.
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*/
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SNAP &operator= (const SNAP &other);
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/**
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* \brief Returns the SNAP frame's header length.
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*
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* \return The header's size.
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* \sa PDU::header_size()
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*/
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uint32_t header_size() const;
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/**
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* \brief Getter for the PDU's type.
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* \sa PDU::pdu_type
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*/
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PDUType pdu_type() const { return PDU::SNAP; }
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/**
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* \brief Clones this PDU.
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*
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* \sa PDU::clone_pdu
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*/
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PDU *clone_pdu() const;
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private:
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struct snaphdr {
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uint8_t dsap;
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uint8_t ssap;
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uint32_t id:2,
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reserved1:2,
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poll:2,
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reserved2:2,
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org_code:24;
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uint16_t eth_type;
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} __attribute__((__packed__));
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void copy_fields(const SNAP *other);
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void write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *parent);
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snaphdr _snap;
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};
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};
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#endif
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