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102 lines
3.9 KiB
C++
102 lines
3.9 KiB
C++
#ifndef EE781A91_6D07_47AC_B3C4_F99E29F3731F
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#define EE781A91_6D07_47AC_B3C4_F99E29F3731F
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#include <string>
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#include "../DTO/packet.hpp"
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#include <vector>
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#include <sstream>
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#include <locale>
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#include <iomanip>
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#include "../helper/split.hpp"
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#include "../helper/timestampConvert.hpp"
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#include "../helper/find.hpp"
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#include "../helper/vector-stats.hpp"
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#include <unordered_map>
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const std::unordered_map<std::string, PacketType> PACKET_TYPE_MAP({
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{"Beacon", PacketType::Beacon},
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{"Probe Request", PacketType::ProbeRequest},
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{"Probe Response", PacketType::ProbeResponse},
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{"Data", PacketType::Data},
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{"Request-To-Send", PacketType::RequestToSend},
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{"Clear-To-Send", PacketType::ClearToSend},
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{"Acknowledgment", PacketType::Acknowledgment},
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{"BA", PacketType::BlockAcknowledgment}
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});
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void textPacketHandler(std::vector<std::string> textPacket){
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/// Here we have to parse the packet
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// Create empty packet
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Packet packet;
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const std::string textHeader = textPacket[0];
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const std::vector<std::string> headerData = split(textHeader, ' ');
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std::string textTimestamp = headerData[0];
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uint64_t timestamp = convertStringToTimestampMicros(textTimestamp);
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// Find remaining data based on keys in/around fields
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int linkSpeedIndex = findIs(headerData, "Mb/s", 1, 1);
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packet.dataRate = std::stoi(headerData[linkSpeedIndex]);
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int frequencyIndex = findIs(headerData, "MHz", 1, 1);
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packet.frequency = std::stoi(headerData[frequencyIndex]);
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int signalIndex = findIs(headerData, "signal", 1, 1);
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std::string signalText = headerData[signalIndex].substr(0, 3);
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packet.signal = std::stoi(signalText);
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// Addresses seem complicated at first, but just have many fields which might be available.
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// SA and DA are src- and dst-Addresses
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// BSSID is the used bssid
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// TA and RA are transmitter- and receiver-address which are used exclusively for RTS and CTS in tcpdump
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// BEWARE: SA, DA, BSSID, TA and RA can be used together, but tcpdump doesnt display all of them!
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// DA might also not be a valid MAC-address, but Broadcast or an encoded IPv4/6 Multicast-address
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int saIndex = findContains(headerData, "SA:", 1);
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std::string sAddr = (saIndex != -1) ? headerData[saIndex].substr("SA:"s.length()) : "";
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int daIndex = findContains(headerData, "DA:", 1);
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std::string dAddr = (daIndex != -1) ? headerData[daIndex].substr("DA:"s.length()) : "";
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int bssidIndex = findContains(headerData, "BSSID:", 1);
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std::string bssidAddr = (bssidIndex != -1) ? headerData[bssidIndex].substr("BSSID:"s.length()) : "";
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int taIndex = findContains(headerData, "TA:", 1);
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std::string tAddr = (taIndex != -1) ? headerData[taIndex].substr("TA:"s.length()) : "";
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int raIndex = findContains(headerData, "RA:", 1);
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std::string rAddr = (raIndex != -1) ? headerData[raIndex].substr("RA:"s.length()) : "";
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// Depending of when which address-fields are actually set, choose which ones to use
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if(sAddr == "" && tAddr != "") sAddr = tAddr;
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if(dAddr == "" && rAddr != "") dAddr = rAddr;
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// Set addresses to packet
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packet.srcMac = sAddr;
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packet.dstMac = dAddr;
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packet.bssid = bssidAddr;
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// Identify type of packet
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// -> comes right after the addresses
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int typeIndex = max(std::vector({saIndex, daIndex, bssidIndex, taIndex, raIndex}))+1;
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PacketType type = PacketType::Unknown;
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if(typeIndex == headerData.size()) type = PacketType::NoData;
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else {
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std::string textType = headerData[typeIndex];
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// Check for incomplete types
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if(textType == "Probe"){
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textType += " "+ headerData[typeIndex+1];
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}
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// If type is in map, use map-value, otherwise keep default
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if(PACKET_TYPE_MAP.find(textType) != PACKET_TYPE_MAP.end())
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type = PACKET_TYPE_MAP[textType];
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}
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//
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}
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#endif /* EE781A91_6D07_47AC_B3C4_F99E29F3731F */
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