mirror of
https://github.com/mfontanini/libtins
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79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
/*
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* Copyright (c) 2014, 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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#ifndef WIN32
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#include <sys/time.h>
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#endif
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#include <stdexcept>
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#include "packet_writer.h"
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#include "pdu.h"
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namespace Tins {
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PacketWriter::PacketWriter(const std::string &file_name, LinkType lt) {
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init(file_name, lt);
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}
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PacketWriter::~PacketWriter() {
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if(dumper && handle) {
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pcap_dump_close(dumper);
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pcap_close(handle);
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}
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}
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void PacketWriter::write(PDU &pdu) {
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PDU::serialization_type buffer = pdu.serialize();
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timeval tm;
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#ifndef WIN32
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gettimeofday(&tm, 0);
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#else
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// fixme
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tm = timeval();
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#endif
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struct pcap_pkthdr header = {
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tm,
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static_cast<bpf_u_int32>(buffer.size()),
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static_cast<bpf_u_int32>(buffer.size())
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};
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pcap_dump((u_char*)dumper, &header, &buffer[0]);
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}
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void PacketWriter::init(const std::string& file_name, int link_type) {
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handle = pcap_open_dead(link_type, 65535);
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if(!handle)
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throw std::runtime_error("Error creating pcap handle");
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dumper = pcap_dump_open(handle, file_name.c_str());
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if(!dumper) {
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// RAII plx
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pcap_close(handle);
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throw std::runtime_error(pcap_geterr(handle));
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}
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}
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}
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