mirror of
https://github.com/mfontanini/libtins
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96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
/*
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* Copyright (c) 2017, 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 <string.h>
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#include "packet_writer.h"
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#include "packet.h"
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#include "pdu.h"
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#include "exceptions.h"
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using std::string;
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namespace Tins {
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PacketWriter::PacketWriter(const 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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timeval tv;
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#ifndef _WIN32
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gettimeofday(&tv, 0);
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#else
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// fixme
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tv = timeval();
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#endif
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write(pdu, tv);
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}
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void PacketWriter::write(Packet& packet) {
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timeval tv;
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tv.tv_sec = packet.timestamp().seconds();
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tv.tv_usec = packet.timestamp().microseconds();
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write(*packet.pdu(), tv);
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}
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void PacketWriter::write(PDU& pdu, const struct timeval& tv) {
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PDU::serialization_type buffer = pdu.serialize();
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struct pcap_pkthdr header;
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memset(&header, 0, sizeof(header));
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header.ts = tv;
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header.caplen = static_cast<bpf_u_int32>(buffer.size());
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header.len = static_cast<bpf_u_int32>(buffer.size());
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pcap_dump((u_char*)dumper_, &header, &buffer[0]);
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}
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void PacketWriter::init(const 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 pcap_open_failed();
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}
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dumper_ = pcap_dump_open(handle_, file_name.c_str());
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if (!dumper_) {
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pcap_close(handle_);
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throw pcap_error(pcap_geterr(handle_));
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}
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}
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} // Tins
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