/usr/include/tins/loopback.h is in libtins-dev 1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2012, Matias Fontanini
* 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.
*
* 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
* OWNER 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.
*
*/
#ifndef TINS_LOOPBACK_H
#define TINS_LOOPBACK_H
#include "pdu.h"
#include "macros.h"
namespace Tins {
class Loopback : public PDU {
public:
/**
* This PDU's type.
*/
static const PDU::PDUType pdu_flag = PDU::LOOPBACK;
/**
* \brief Default constructs a Loopback PDU.
*
* The family identifier is left as zero.
*/
Loopback();
/**
* \brief Construct a Loopback object from a buffer and adds
* all identifiable PDUs found in the buffer as children of
* this one.
*
* If the next PDU is not recognized, then a RawPDU is used.
*
* If there is not enough size for a Loopback header, a
* malformed_packet exception is thrown.
*
* \param buffer The buffer from which this PDU will be constructed.
* \param total_sz The total size of the buffer.
*/
Loopback(const uint8_t *buffer, uint32_t total_sz);
/**
* \brief Getter for the family identifier.
* \return The stored family identifier.
*/
uint32_t family() const { return _family; }
/**
* \brief Setter for the family identifier.
* \param family_id The family identifier to be set.
*/
void family(uint32_t family_id);
/**
* \sa PDU::header_size
*/
uint32_t header_size() const;
/**
* \brief Getter for the PDU's type.
* \sa PDU::pdu_type
*/
PDUType pdu_type() const { return PDU::IP; }
/**
* \sa PDU::clone
*/
Loopback *clone() const {
return new Loopback(*this);
}
// Null/Loopback can only be sent in *BSD
#ifdef BSD
/**
* \sa PDU::send()
*/
void send(PacketSender &sender, const NetworkInterface &iface);
#endif // BSD
private:
void write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *parent);
uint32_t _family;
};
}
#endif // TINS_LOOPBACK_H
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