/usr/include/tins/ethernetII.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_ETHERNET_II_H
#define TINS_ETHERNET_II_H
#include <stdint.h>
#include "macros.h"
#include "pdu.h"
#include "endianness.h"
#include "hw_address.h"
namespace Tins {
/**
* \brief Class representing an Ethernet II PDU.
*/
class EthernetII : public PDU {
public:
/**
* \brief The hardware address type.
*/
typedef HWAddress<6> address_type;
/**
* \brief This PDU's flag.
*/
static const PDU::PDUType pdu_flag = PDU::ETHERNET_II;
/**
* \brief Represents the ethernetII broadcast address.
*/
static const address_type BROADCAST;
/**
* \brief Constructs an ethernet II PDU.
*
* \param dst_hw_addr address_type containing the destination's MAC.
* \param src_hw_addr address_type containing the source's MAC.
*/
EthernetII(const address_type &dst_hw_addr = address_type(),
const address_type &src_hw_addr = address_type());
/**
* \brief Constructs a EthernetII 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 EthernetII header in the
* buffer, 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.
*/
EthernetII(const uint8_t *buffer, uint32_t total_sz);
/* Getters */
/**
* \brief Getter for the destination's hardware address.
*
* \return address_type containing the destination hardware
* address.
*/
address_type dst_addr() const { return _eth.dst_mac; }
/**
* \brief Getter for the source's hardware address.
*
* \return address_type containing the source hardware address.
*/
address_type src_addr() const { return _eth.src_mac; }
/**
* \brief Getter for the payload_type
* \return The payload type.
*/
uint16_t payload_type() const { return Endian::be_to_host(_eth.payload_type); };
/* Setters */
/**
* \brief Setter for the destination hardware address.
*
* \param new_dst_addr the destination hardware address to be set.
*/
void dst_addr(const address_type &new_dst_addr);
/**
* \brief Setter for the source hardware address.
*
* \param new_src_addr the source hardware address to be set.
*/
void src_addr(const address_type &new_src_addr);
/**
* \brief Setter for the payload type.
*
* \param new_payload_type the new value of the payload type field.
*/
void payload_type(uint16_t new_payload_type);
/* Virtual methods */
/**
* \brief Returns the ethernet frame's header length.
*
* \return An uint32_t with the header's size.
* \sa PDU::header_size()
*/
uint32_t header_size() const;
// Windows does not support sending L2 PDUs.
#ifndef WIN32
/**
* \sa PDU::send()
*/
void send(PacketSender &sender, const NetworkInterface &iface);
#endif // WIN32
/**
* \brief Check wether ptr points to a valid response for this PDU.
*
* \sa PDU::matches_response
* \param ptr The pointer to the buffer.
* \param total_sz The size of the buffer.
*/
bool matches_response(const uint8_t *ptr, uint32_t total_sz) const;
#ifndef WIN32
/**
* \brief Receives a matching response for this packet.
*
* \sa PDU::recv_response
*/
PDU *recv_response(PacketSender &sender, const NetworkInterface &iface);
#endif // WIN32
/**
* \brief Getter for the PDU's type.
* \sa PDU::pdu_type
*/
PDUType pdu_type() const { return PDU::ETHERNET_II; }
/**
* \sa PDU::clone
*/
EthernetII *clone() const {
return new EthernetII(*this);
}
private:
/**
* Struct that represents the Ethernet II header
*/
TINS_BEGIN_PACK
struct ethhdr {
uint8_t dst_mac[address_type::address_size];
uint8_t src_mac[address_type::address_size];
uint16_t payload_type;
} TINS_END_PACK;
void write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *parent);
ethhdr _eth;
};
}
#endif // TINS_ETHERNET_II_H
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