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#include "pcapplusplus.h"
#include <EthLayer.h>
#include <exception>
#include <IPLayer.h>
#include <TcpLayer.h>
#include <tuple>
#include <UdpLayer.h>
PcapPlusPlus::PcapPlusPlus(std::string fileName) : rawPackets(), parsedPackets()
{
reader = pcpp::IFileReaderDevice::getReader(fileName);
if (!reader) {
std::string err("PCAP Reader failed for: " + fileName);
throw std::runtime_error(err);
}
if (!reader->open()) {
std::string err("PCAP Open failed for: " + fileName);
throw std::runtime_error(err);
}
}
PcapPlusPlus::~PcapPlusPlus()
{
if (reader) {
reader->close();
delete reader;
reader = nullptr;
}
}
bool PcapPlusPlus::openPcap()
{
if (!reader)
return false;
if (reader->isOpened())
throw std::runtime_error("PCAP File already open. Close it first.");
return reader->open();
}
void PcapPlusPlus::closePcap()
{
if (reader)
reader->close();
}
bool PcapPlusPlus::setFilter(QString filter)
{
if (reader)
return reader->setFilter(filter.toStdString());
return false;
}
bool PcapPlusPlus::processPacket(pcpp::Packet & packet)
{
pcpp::RawPacket rawPacket;
if (!reader)
return false;
if (reader->getNextPacket(rawPacket)) {
rawPackets.emplace_back(std::move(rawPacket));
pcpp::Packet parsedPacket(&rawPackets.back(), false);
packet = parsedPacket;
parsedPackets.emplace_back(std::move(parsedPacket));
return true;
}
return false;
}
pcpp::RawPacket &PcapPlusPlus::getRawPacket(size_t index)
{
return rawPackets.at(index);
}
pcpp::Packet &PcapPlusPlus::getParsedPacket(size_t index)
{
return parsedPackets.at(index);
}
std::vector<pcpp::RawPacket>::iterator PcapPlusPlus::rawPacketsBegin()
{
return rawPackets.begin();
}
std::vector<pcpp::RawPacket>::iterator PcapPlusPlus::rawPacketsEnd()
{
return rawPackets.end();
}
std::vector<pcpp::Packet>::iterator PcapPlusPlus::parsedPacketsBegin()
{
return parsedPackets.begin();
}
std::vector<pcpp::Packet>::iterator PcapPlusPlus::parsedPacketsEnd()
{
return parsedPackets.end();
}
bool PcapPlusPlus::getPcapStatistics(pcpp::IFileDevice::PcapStats & stats)
{
if (reader) {
reader->getStatistics(stats);
return true;
}
return false;
}
const pcpp::Layer *PcapPlusPlus::getFirstLayer(const pcpp::Packet & packet)
{
const auto *curLayer = packet.getFirstLayer();
if (curLayer == nullptr)
{
throw std::runtime_error("No Ethernet Layer found.");
return nullptr;
}
return curLayer;
}
QString PcapPlusPlus::getProtocolTypeAsString(pcpp::ProtocolType protocolType)
{
switch (protocolType)
{
case pcpp::Ethernet:
return "Ethernet";
case pcpp::ARP:
return "ARP";
case pcpp::IPv4:
return "IPv4";
case pcpp::IPv6:
return "IPv6";
case pcpp::TCP:
return "TCP";
case pcpp::UDP:
return "UDP";
case pcpp::HTTPRequest:
case pcpp::HTTPResponse:
return "HTTP";
case pcpp::UnknownProtocol:
return "Unknown Protocol";
default:
return "Unknown";
}
}
std::tuple<QString, QString> PcapPlusPlus::getEthTuple(const pcpp::Packet & packet)
{
const auto *ethernetLayer = packet.getLayerOfType<pcpp::EthLayer>();
if (ethernetLayer == NULL)
return std::make_tuple("", "");
return std::make_tuple(QString::fromStdString(ethernetLayer->getSourceMac().toString()), QString::fromStdString(ethernetLayer->getDestMac().toString()));
}
std::tuple<QString, QString> PcapPlusPlus::getIpTuple(const pcpp::Packet & packet)
{
const auto *ipLayer = packet.getLayerOfType<pcpp::IPLayer>();
if (ipLayer == NULL)
return std::make_tuple("", "");
return std::make_tuple(QString::fromStdString(ipLayer->getSrcIPAddress().toString()), QString::fromStdString(ipLayer->getDstIPAddress().toString()));
}
std::tuple<uint16_t, uint16_t> PcapPlusPlus::getLayer4Tuple(const pcpp::Packet & packet)
{
const auto *udpLayer = packet.getLayerOfType<pcpp::UdpLayer>();
if (udpLayer != NULL)
return std::make_tuple(udpLayer->getSrcPort(), udpLayer->getDstPort());
const auto *tcpLayer = packet.getLayerOfType<pcpp::TcpLayer>();
if (tcpLayer != NULL)
return std::make_tuple(tcpLayer->getSrcPort(), tcpLayer->getDstPort());
return std::make_tuple(0, 0);
}
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