public void ConstructFrameWithSinglePresenceField()
{
var p = new RadioPacket();
var expectedLength = 8;
Assert.AreEqual(expectedLength, p.Length);
var flagsField = new FlagsRadioTapField();
flagsField.Flags |= RadioTapFlags.FcsIncludedInFrame;
flagsField.Flags |= RadioTapFlags.WepEncrypted;
p.Add(flagsField);
expectedLength += flagsField.Length;
Assert.AreEqual(expectedLength, p.Length);
//We will add the noise field before the signal field. This is not the order required
//for radiotap and so will test that the fields are correctly reordered when written
var dbAntennaNoiseField = new DbAntennaNoiseRadioTapField {
AntennaNoisedB = 33
};
p.Add(dbAntennaNoiseField);
expectedLength += dbAntennaNoiseField.Length;
Assert.AreEqual(expectedLength, p.Length);
var dbAntennaSignalField = new DbAntennaSignalRadioTapField {
SignalStrengthdB = 44
};
p.Add(dbAntennaSignalField);
expectedLength += dbAntennaSignalField.Length;
Assert.AreEqual(expectedLength, p.Length);
//we will just put a single byte of data because we dont want it to be parsed into
//an 802.11 frame in this test
p.PayloadData = new byte[] { 0xFF };
var frameBytes = p.Bytes;
var recreatedFrame = Packet.ParsePacket(LinkLayers.Ieee80211Radio, frameBytes) as RadioPacket;
Assert.IsNotNull(p[RadioTapType.Flags]);
Assert.IsNotNull(p[RadioTapType.DbAntennaSignal]);
Assert.IsNotNull(p[RadioTapType.DbAntennaNoise]);
Assert.AreEqual(new byte[] { 0xFF }, recreatedFrame.PayloadData);
}
public void UnhandledRadioTapField()
{
MemoryStream ms = new MemoryStream();
BinaryWriter bs = new BinaryWriter(ms);
bs.Write((Byte)0x0); //version
bs.Write((Byte)0x0); //pad
bs.Write((UInt16)0x0010); //length
bs.Write((UInt32)0x80000002); //present 1 (wth flags field)
bs.Write((UInt32)0x00010000); //present 2 (with unhandled field)
bs.Write((UInt16)0x0010); //Flags field (FCS included flag set)
bs.Write((UInt16)0x1234); //a made up field that we want to keep even though we dont know what it is
var dev = new CaptureFileReaderDevice("../../CaptureFiles/80211_plus_radiotap_header.pcap");
dev.Open();
var rawCapture = dev.GetNextPacket();
dev.Close();
RadioPacket anotherRadioPacket = Packet.ParsePacket(rawCapture.LinkLayerType, rawCapture.Data) as RadioPacket;
bs.Write(anotherRadioPacket.PayloadPacket.Bytes);
var radioTap = ms.ToArray();
RadioPacket p = Packet.ParsePacket(LinkLayers.Ieee80211_Radio, radioTap) as RadioPacket;
Assert.AreEqual(16, p.Length);
p.Add(new TsftRadioTapField(0x123456789));
RadioPacket finalFrame = Packet.ParsePacket(LinkLayers.Ieee80211_Radio, p.Bytes) as RadioPacket;
Assert.AreEqual(24, finalFrame.Length);
Assert.AreEqual(0x1234, EndianBitConverter.Little.ToUInt16(finalFrame.Bytes, finalFrame.Length - 2));
}
public void ConstructFrameWithSinglePresenceField()
{
RadioPacket p = new RadioPacket();
var expectedLength = 8;
Assert.AreEqual(expectedLength, p.Length);
FlagsRadioTapField flagsField = new FlagsRadioTapField();
flagsField.Flags |= RadioTapFlags.FcsIncludedInFrame;
flagsField.Flags |= RadioTapFlags.WepEncrypted;
p.Add(flagsField);
expectedLength += flagsField.Length;
Assert.AreEqual(expectedLength, p.Length);
//We will add the noise field before the signal field. This is not the order required
//for radiotap and so will test that the fields are correctly reordered when written
DbAntennaNoiseRadioTapField dbAntennaNoiseField = new DbAntennaNoiseRadioTapField();
dbAntennaNoiseField.AntennaNoisedB = 33;
p.Add(dbAntennaNoiseField);
expectedLength += dbAntennaNoiseField.Length;
Assert.AreEqual(expectedLength, p.Length);
DbAntennaSignalRadioTapField dbAntennaSignalField = new DbAntennaSignalRadioTapField();
dbAntennaSignalField.SignalStrengthdB = 44;
p.Add(dbAntennaSignalField);
expectedLength += dbAntennaSignalField.Length;
Assert.AreEqual(expectedLength, p.Length);
//we will just put a single byte of data because we dont want it to be parsed into
//an 802.11 frame in this test
p.PayloadData = new byte[]{0xFF};
var frameBytes = p.Bytes;
RadioPacket recreatedFrame = Packet.ParsePacket(LinkLayers.Ieee80211_Radio, frameBytes) as RadioPacket;
Assert.IsNotNull(p[RadioTapType.Flags]);
Assert.IsNotNull(p[RadioTapType.DbAntennaSignal]);
Assert.IsNotNull(p[RadioTapType.DbAntennaNoise]);
Assert.AreEqual(new byte[]{0xFF}, recreatedFrame.PayloadData);
}
