mirror of
https://github.com/mfontanini/libtins
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92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
/*
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* Copyright (c) 2012, Matias Fontanini
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <stdexcept>
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#include <cstring>
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#include "sll.h"
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#include "internals.h"
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#include "exceptions.h"
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namespace Tins {
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SLL::SLL() : _header() {
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}
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SLL::SLL(const uint8_t *buffer, uint32_t total_sz) {
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if(total_sz < sizeof(_header))
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throw malformed_packet();
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std::memcpy(&_header, buffer, sizeof(_header));
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buffer += sizeof(_header);
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total_sz -= sizeof(_header);
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if(total_sz) {
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inner_pdu(
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Internals::pdu_from_flag(
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(Constants::Ethernet::e)protocol(),
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buffer,
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total_sz
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)
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);
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}
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}
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void SLL::packet_type(uint16_t new_packet_type) {
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_header.packet_type = Endian::host_to_be(new_packet_type);
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}
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void SLL::lladdr_type(uint16_t new_lladdr_type) {
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_header.lladdr_type = Endian::host_to_be(new_lladdr_type);
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}
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void SLL::lladdr_len(uint16_t new_lladdr_len) {
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_header.lladdr_len = Endian::host_to_be(new_lladdr_len);
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}
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void SLL::address(const address_type &new_address) {
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new_address.copy(_header.address);
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}
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void SLL::protocol(uint16_t new_protocol) {
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_header.protocol = Endian::host_to_be(new_protocol);
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}
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uint32_t SLL::header_size() const {
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return sizeof(_header);
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}
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void SLL::write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *) {
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if(inner_pdu()) {
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Constants::Ethernet::e flag = Internals::pdu_flag_to_ether_type(
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inner_pdu()->pdu_type()
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);
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protocol(static_cast<uint16_t>(flag));
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}
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std::memcpy(buffer, &_header, sizeof(_header));
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}
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}
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