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@@ -1,7 +1,7 @@
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const logger = require.main.require("./helper/logger.js")("PacketStreamFactory");
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const { Transform } = require('stream');
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const { DateTime } = require("luxon");
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const { PacketType, Packet, PacketWithSSID, BeaconPacket, ProbeRequestPacket, ProbeResponsePacket, AuthenticationPacket, AuthenticationType, AssociationResponsePacket, DisassociationPacket, HandshakePacket, HandshakeStage } = require.main.require('./dto/Packet.js');
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const { PacketType, FlagType, Packet, PacketWithSSID, BeaconPacket, ProbeRequestPacket, ProbeResponsePacket, AuthenticationPacket, AuthenticationType, AssociationResponsePacket, DisassociationPacket, HandshakePacket, HandshakeStage } = require.main.require('./dto/Packet.js');
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const hexConv = require.main.require("./helper/hexConverter.js");
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const PACKET_TYPE_MAP = {
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@@ -9,7 +9,6 @@ const PACKET_TYPE_MAP = {
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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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"More Data": PacketType.MoreData,
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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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@@ -27,14 +26,18 @@ const AUTHENTICATION_TYPE_MAP = {
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"(Open System)-2": AuthenticationType.OpenSystem_2,
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}
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const FLAG_TYPE_MAP = {
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"Retry": FlagType.Retry,
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"Pwr Mgmt": FlagType.PwrMgt,
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"More Data": FlagType.MoreData,
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"Protected": FlagType.Protected,
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}
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const FLAG_TYPE_MAPS_REGEX = Object.keys(FLAG_TYPE_MAP).join('|');
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/**
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* Read data from text-blocks and convert them to Packet
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*/
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class PacketStreamFactory extends Transform{
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matcher;
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withholdLastBlock;
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matchAllOnFlush;
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constructor(){
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super({
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readableObjectMode: true,
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@@ -50,8 +53,6 @@ class PacketStreamFactory extends Transform{
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packet = this._handleHeader(packet, header);
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packet = this._handlePayload(packet, lines);
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logger.debug(packet);
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next(null, packet); // Get next chunk
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}
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@@ -59,7 +60,10 @@ class PacketStreamFactory extends Transform{
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// Convert time to epoch-micros Unfortunately luxon doesnt use micros, but millis as smallest time-unit requiring some "hacks"
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packet.timestampMicros = DateTime.fromISO(data.slice(0, 12)).toSeconds() + data.slice(12, 15)/1000000;
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packet.isRetry = data.match(/(?<=^|\s)Retry(?=$|\s)/i)? true: false;
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// Find flags
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data.match(data.match(new RegExp('(?<=^|\\s)('+ FLAG_TYPE_MAPS_REGEX +')(?=$|\\s)', 'ig'))
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?.forEach(match => packet.flags[FLAG_TYPE_MAP[match]] = true) // Set them to true in flags
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);
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packet.dataRate = Number(data.match(/(?<=^|\s)[0-9]+(\.[0-9]+)?(?=\sMb\/?s($|\s))/i)?.[0]) || null;
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packet.frequency = Number(data.match(/(?<=^|\s)[0-9]{4}(?=\sMHz($|\s))/i)?.[0]) || null;
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@@ -69,7 +73,9 @@ class PacketStreamFactory extends Transform{
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packet.signal = Number(data.match(/(?<=^|\s)-[0-9]{2,3}(?=dBm\sSignal($|\s))/i)?.[0]) || null;
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let packetTypeStr = data.match(new RegExp('(?<=^|\\s)('+ PACKET_TYPES_REGEX +')(?=$|\\s)', 'i'))?.[0];
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packet.packetType = packetTypeStr? PACKET_TYPE_MAP[packetTypeStr]: PacketType.Unknown;
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packet.packetType = packetTypeStr? PACKET_TYPE_MAP[packetTypeStr]:
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data.match(/(SA|TA|DA|RA|BSSID):.{17}\s*$/i)? PacketType.NoData:
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PacketType.Unknown;
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packet.srcMac = data.match(/(?<=(^|\s)(SA|TA):).{17}(?=$|\s)/i)?.[0] ?? null;
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@@ -112,7 +118,8 @@ class PacketStreamFactory extends Transform{
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data = data.join('');
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// Get payload-Hex-Data. If there is no data: empty
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packet.payloadData = hexConv.hexToBytes(data.match(/(?<=\s)([A-F0-9]{1,4}(?!(\.|x)))/igm)?.join('') ?? '');
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packet.payloadData = hexConv.hexToBytes(data.match(/(?<=\s)([A-F0-9]{1,4}(?=\s))/igm)?.join('') ?? '');
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packet.payloadData.splice(packet.payloadData.length-4, 4); // Remove FrameCheck sequence
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// Cover special cases with more data
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let newPacket;
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@@ -121,8 +128,8 @@ class PacketStreamFactory extends Transform{
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newPacket = new HandshakePacket();
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// Read key-information
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let keyInfoRaw = (packet.payloadData[0x5]<<0x8) + packet.payloadData[0x6];
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let keyInfo = {
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const keyInfoRaw = (packet.payloadData[0x5]<<0x8) + packet.payloadData[0x6];
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const keyInfo = {
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"KeyDescriptorVersion": keyInfoRaw>>0 & 0b111,
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"KeyType": keyInfoRaw>>3 & 0b1,
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"KeyIndex": keyInfoRaw>>4 & 0b11,
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