public void ReceivePackets()
{
// Retrieve the device list from the local machine
IList<LivePacketDevice> allDevices = LivePacketDevice.AllLocalMachine;
// Find the NPF device of the TAP interface
PacketDevice selectedDevice = null;
for (int i = 0; i != allDevices.Count; ++i)
{
LivePacketDevice device = allDevices[i];
if (device.Name.Contains(Guid))
{
selectedDevice = device;
break;
}
}
if (selectedDevice == null)
{
Initialized.Set();
Global.ShowTrayTip("Byte Counter", "Interface " + Name + " not captured by WinPcap.", System.Windows.Forms.ToolTipIcon.Warning);
Global.WriteLog("Byte Counter: Interface " + Name + " not captured by WinPcap.");
return;
}
try
{
using (communicator = selectedDevice.Open(65536, PacketDeviceOpenAttributes.MaximumResponsiveness, 1000))
{
Global.WriteLog("Byte Counter: Listening on " + Name + "...");
communicator.SetFilter("((ether dst " + ifHardwareAddressString + " or ether src " + ifHardwareAddressString + ") and ip and (tcp or udp))");
Initialized.Set();
communicator.ReceivePackets(0, (packet) =>
{
if (!threadActive.IsSet)
{
communicator.Break();
return;
}
Table.CheckPacket(packet, ifHardwareAddress);
});
}
}
catch (Exception e)
{
if (threadActive.IsSet)
{
threadActive.Reset();
Global.WriteLog("Byte Counter: Could not capture traffic from " + Name);
if (Global.Config.Gadget.Debug)
Global.WriteLog(e.ToString());
Global.ShowTrayTip("Byte Counter", "Could not capture traffic from " + Name, System.Windows.Forms.ToolTipIcon.Warning);
}
}
}
public void ReceivePackets()
{
// Retrieve the device list from the local machine
IList<LivePacketDevice> allDevices = LivePacketDevice.AllLocalMachine;
// Find the NPF device of the TAP interface
PacketDevice selectedDevice = null;
for (int i = 0; i != allDevices.Count; ++i)
{
LivePacketDevice device = allDevices[i];
if (device.Name.ToUpper().Contains(Guid.ToString().ToUpper()))
{
selectedDevice = device;
break;
}
}
if (selectedDevice == null)
{
Initialized.Set();
Global.ShowTrayTip("Load Balancer", "Interface " + Name + " not captured by WinPcap.", System.Windows.Forms.ToolTipIcon.Warning);
Global.WriteLog("Load Balancer: Interface " + Name + " not captured by WinPcap.");
return;
}
try
{
using (communicator = selectedDevice.Open(65536, PacketDeviceOpenAttributes.MaximumResponsiveness, 1000))
{
Global.WriteLog("Load Balancer: Listening on " + Name + "...");
communicator.SetFilter("(ether dst " + ownHardwareAddressString + " and ((ip and (tcp or udp or icmp)) or arp)) or (ether dst FF:FF:FF:FF:FF:FF and arp)");
Initialized.Set();
communicator.ReceivePackets(0, (packet) =>
{
if (!ThreadActive.IsSet)
{
communicator.Break();
return;
}
if (packet.Ethernet.EtherType == EthernetType.Arp)
{
if (packet.Ethernet.Arp.TargetProtocolAddress.SequenceEqual(ownProtocolAddressByte) && packet.Ethernet.Arp.Operation == ArpOperation.Request)
{
EthernetLayer ethernetLayer = new EthernetLayer
{
Source = ownHardwareAddress,
Destination = packet.Ethernet.Source,
EtherType = EthernetType.None,
};
ArpLayer arpLayer = new ArpLayer
{
ProtocolType = EthernetType.IpV4,
Operation = ArpOperation.Reply,
SenderHardwareAddress = ownHardwareAddressByte.AsReadOnly(),
SenderProtocolAddress = packet.Ethernet.Arp.TargetProtocolAddress,
TargetHardwareAddress = packet.Ethernet.Arp.SenderHardwareAddress,
TargetProtocolAddress = packet.Ethernet.Arp.SenderProtocolAddress,
};
PacketBuilder builder = new PacketBuilder(ethernetLayer, arpLayer);
SendPacket(builder.Build(DateTime.Now));
}
}
else if (packet.Ethernet.EtherType.ToString() == "IpV4")
{
if (packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.DoNotFragment ||
packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.None && packet.Ethernet.IpV4.Fragmentation.Offset == 0)
{
IpV4Handler(packet);
}
else if (packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.MoreFragments ||
packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.None && packet.Ethernet.IpV4.Fragmentation.Offset > 0)
{
// TODO: fix warning spam
if (Global.Config.LoadBalancer.ShowTrayTipsWarnings)
Global.ShowTrayTip("Load Balancer", "IP fragmentation detected on " + Name + ".\n\nIP fragmentation is not supported.", ToolTipIcon.Warning);
Global.WriteLog("Load Balancer: IP fragmentation detected on " + Name);
//fragments = fragBuffer.Add(packet);
//if (fragments != null)
// for (int i = 0; i < fragments.Count; i++)
// {
// IpV4Handler(fragments[i], fragments);
// }
}
}
});
}
}
catch (Exception e)
{
if (ThreadActive.IsSet)
{
ThreadActive.Reset();
Global.WriteLog("Load Balancer: " + Name + " has disconnected");
if (Global.Config.Gadget.Debug)
Global.WriteLog(e.ToString());
Global.ShowTrayTip("Load Balancer", Name + " has disconnected", System.Windows.Forms.ToolTipIcon.Warning);
}
}
}
private static void TestGetStatistics(string sourceMac, string destinationMac, int numPacketsToSend, int numStatisticsToGather, int numStatisticsToBreakLoop, double secondsToWait, int packetSize,
PacketCommunicatorReceiveResult expectedResult, int expectedNumStatistics, int expectedNumPackets, double expectedMinSeconds, double expectedMaxSeconds)
{
using (PacketCommunicator communicator = OpenLiveDevice())
{
communicator.Mode = PacketCommunicatorMode.Statistics;
communicator.SetFilter("ether src " + sourceMac + " and ether dst " + destinationMac);
Packet sentPacket = _random.NextEthernetPacket(packetSize, sourceMac, destinationMac);
PacketCommunicatorReceiveResult result = PacketCommunicatorReceiveResult.None;
int numStatisticsGot = 0;
ulong totalPackets = 0;
ulong totalBytes = 0;
for (int i = 0; i != numPacketsToSend; ++i)
{
communicator.SendPacket(sentPacket);
}
if (numStatisticsToBreakLoop == 0)
{
communicator.Break();
}
Thread thread = new Thread(delegate()
{
result = communicator.ReceiveStatistics(numStatisticsToGather,
delegate(PacketSampleStatistics statistics)
{
Assert.IsNotNull(statistics.ToString());
totalPackets += statistics.AcceptedPackets;
totalBytes += statistics.AcceptedBytes;
++numStatisticsGot;
if (numStatisticsGot >= numStatisticsToBreakLoop)
{
communicator.Break();
}
});
});
DateTime startWaiting = DateTime.Now;
thread.Start();
if (!thread.Join(TimeSpan.FromSeconds(secondsToWait)))
{
thread.Abort();
}
DateTime finishedWaiting = DateTime.Now;
Assert.AreEqual(expectedResult, result, "Result");
Assert.AreEqual(expectedNumStatistics, numStatisticsGot, "NumStatistics");
Assert.AreEqual((ulong)expectedNumPackets, totalPackets, "NumPackets");
// Todo check byte statistics. See http://www.winpcap.org/pipermail/winpcap-users/2015-February/004931.html
// Assert.AreEqual((ulong)(numPacketsToSend * sentPacket.Length), totalBytes, "NumBytes");
MoreAssert.IsInRange(expectedMinSeconds, expectedMaxSeconds, (finishedWaiting - startWaiting).TotalSeconds);
}
}
void FormMain_FormClosing(object sender, FormClosingEventArgs e)
{
if (comm != null)
{
comm.Break();
comm.Dispose();
comm = null;
}
Ignores.I.Save();
Settings.I.Save();
stop = true;
}
/// <summary>
/// Stop capture and return the number of captured packets
/// </summary>
/// <returns></returns>
public uint StopCapture()
{
communicator.Break();
PacketTotalStatistics statistics = communicator.TotalStatistics;
return(statistics.PacketsCaptured);
}
public void Break()
{
if (_communicator != null)
{
_communicator.Break();
}
}
private static void OnAbortExecution()
{
if (__communicator != null)
{
__communicator.Break();
}
}
private static void TestGetSomePackets(int numPacketsToSend, int numPacketsToGet, int numPacketsToBreakLoop,
PacketCommunicatorReceiveResult expectedResult, int expectedNumPackets,
double expectedMinSeconds, double expectedMaxSeconds)
{
string testDescription = "NumPacketsToSend=" + numPacketsToSend + ". NumPacketsToGet=" + numPacketsToGet +
". NumPacketsToBreakLoop=" + numPacketsToBreakLoop;
const string SourceMac = "11:22:33:44:55:66";
const string DestinationMac = "77:88:99:AA:BB:CC";
Packet expectedPacket = _random.NextEthernetPacket(100, SourceMac, DestinationMac);
using (PacketCommunicator communicator = OpenOfflineDevice(numPacketsToSend, expectedPacket))
{
communicator.SetFilter("ether src " + SourceMac + " and ether dst " + DestinationMac);
if (numPacketsToBreakLoop == 0)
{
communicator.Break();
}
PacketHandler handler = new PacketHandler(expectedPacket, expectedMinSeconds, expectedMaxSeconds, communicator, numPacketsToBreakLoop);
int numPacketsGot;
PacketCommunicatorReceiveResult result = communicator.ReceiveSomePackets(out numPacketsGot, numPacketsToGet, handler.Handle);
Assert.AreEqual(expectedResult, result);
Assert.AreEqual(expectedNumPackets, numPacketsGot, "NumPacketsGot. Test: " + testDescription);
Assert.AreEqual(expectedNumPackets, handler.NumPacketsHandled, "NumPacketsHandled. Test: " + testDescription);
}
}
public void ReceivePackets()
{
// Retrieve the device list from the local machine
IList <LivePacketDevice> allDevices = LivePacketDevice.AllLocalMachine;
// Find the NPF device of the TAP interface
PacketDevice selectedDevice = null;
for (int i = 0; i != allDevices.Count; ++i)
{
LivePacketDevice device = allDevices[i];
if (device.Name.Contains(Guid))
{
selectedDevice = device;
break;
}
}
if (selectedDevice == null)
{
Initialized.Set();
Global.ShowTrayTip("Byte Counter", "Interface " + Name + " not captured by WinPcap.", System.Windows.Forms.ToolTipIcon.Warning);
Global.WriteLog("Byte Counter: Interface " + Name + " not captured by WinPcap.");
return;
}
try
{
using (communicator = selectedDevice.Open(65536, PacketDeviceOpenAttributes.MaximumResponsiveness, 1000))
{
Global.WriteLog("Byte Counter: Listening on " + Name + "...");
communicator.SetFilter("((ether dst " + ifHardwareAddressString + " or ether src " + ifHardwareAddressString + ") and ip and (tcp or udp))");
Initialized.Set();
communicator.ReceivePackets(0, (packet) =>
{
if (!threadActive.IsSet)
{
communicator.Break();
return;
}
Table.CheckPacket(packet, ifHardwareAddress);
});
}
}
catch (Exception e)
{
if (threadActive.IsSet)
{
threadActive.Reset();
Global.WriteLog("Byte Counter: Could not capture traffic from " + Name);
if (Global.Config.Gadget.Debug)
{
Global.WriteLog(e.ToString());
}
Global.ShowTrayTip("Byte Counter", "Could not capture traffic from " + Name, System.Windows.Forms.ToolTipIcon.Warning);
}
}
}
private static void TestReceivePacketsEnumerable(int numPacketsToSend, int numPacketsToWait, int numPacketsToBreakLoop, double secondsToWait,
int packetSize, int expectedNumPackets, double expectedMinSeconds, double expectedMaxSeconds)
{
string testDescription = "NumPacketsToSend=" + numPacketsToSend + ". NumPacketsToWait=" + numPacketsToWait +
". NumPacketsToBreakLoop=" + numPacketsToBreakLoop + ". SecondsToWait=" +
secondsToWait + ". PacketSize=" + packetSize;
const string SourceMac = "11:22:33:44:55:66";
const string DestinationMac = "77:88:99:AA:BB:CC";
using (PacketCommunicator communicator = OpenLiveDevice())
{
communicator.SetFilter("ether src " + SourceMac + " and ether dst " + DestinationMac);
Packet sentPacket = _random.NextEthernetPacket(packetSize, SourceMac, DestinationMac);
for (int i = 0; i != numPacketsToSend; ++i)
{
communicator.SendPacket(sentPacket);
}
int actualPacketsReceived = 0;
Thread thread = new Thread(delegate()
{
if (numPacketsToBreakLoop == 0)
{
communicator.Break();
}
IEnumerable <Packet> packets = numPacketsToWait == -1
? communicator.ReceivePackets()
: communicator.ReceivePackets(numPacketsToWait);
foreach (Packet packet in packets)
{
Assert.AreEqual(sentPacket, packet);
++actualPacketsReceived;
if (actualPacketsReceived == numPacketsToBreakLoop)
{
break;
}
}
});
DateTime startWaiting = DateTime.Now;
thread.Start();
if (!thread.Join(TimeSpan.FromSeconds(secondsToWait)))
{
thread.Abort();
}
DateTime finishedWaiting = DateTime.Now;
Assert.AreEqual(expectedNumPackets, actualPacketsReceived, testDescription);
MoreAssert.IsInRange(expectedMinSeconds, expectedMaxSeconds, (finishedWaiting - startWaiting).TotalSeconds, testDescription);
}
}
public void Close()
{
startDone.WaitOne();
if (communicator != null)
{
communicator.Break();
communicator.Dispose();
communicator = null;
}
pspsigCheck.Abort();
}
public void Stop()
{
if (_packet_process_thread != null && _packet_process_thread.IsAlive)
{
_packet_communicator.Break();
_packet_process_thread.Join();
_packet_process_thread = null;
_adapter_hashtable.Clear();
_adapter_hashtable = null;
}
}
internal static void Stop()
{
if (!_started)
{
return;
}
_communicator.Break();
_timer1.Stop();
_server.Stop();
_started = false;
}
private static void TestReceivePackets(int numPacketsToSend, int numPacketsToWait, int numPacketsToBreakLoop, double secondsToWait, int packetSize,
PacketCommunicatorReceiveResult expectedResult, int expectedNumPackets,
double expectedMinSeconds, double expectedMaxSeconds)
{
string testDescription = "NumPacketsToSend=" + numPacketsToSend + ". NumPacketsToWait=" + numPacketsToWait +
". NumPacketsToBreakLoop=" + numPacketsToBreakLoop + ". SecondsToWait=" +
secondsToWait + ". PacketSize=" + packetSize;
const string SourceMac = "11:22:33:44:55:66";
const string DestinationMac = "77:88:99:AA:BB:CC";
using (PacketCommunicator communicator = OpenLiveDevice())
{
communicator.SetFilter("ether src " + SourceMac + " and ether dst " + DestinationMac);
Packet sentPacket = _random.NextEthernetPacket(packetSize, SourceMac, DestinationMac);
PacketCommunicatorReceiveResult result = PacketCommunicatorReceiveResult.None;
for (int i = 0; i != numPacketsToSend; ++i)
{
communicator.SendPacket(sentPacket);
}
PacketHandler handler = new PacketHandler(sentPacket, communicator, numPacketsToBreakLoop);
Thread thread = new Thread(delegate()
{
if (numPacketsToBreakLoop == 0)
{
communicator.Break();
}
result = communicator.ReceivePackets(numPacketsToWait, handler.Handle);
});
DateTime startWaiting = DateTime.Now;
thread.Start();
if (!thread.Join(TimeSpan.FromSeconds(secondsToWait)))
{
thread.Abort();
}
DateTime finishedWaiting = DateTime.Now;
Assert.AreEqual(expectedResult, result, testDescription);
Assert.AreEqual(expectedNumPackets, handler.NumPacketsHandled);
MoreAssert.IsInRange(expectedMinSeconds, expectedMaxSeconds, (finishedWaiting - startWaiting).TotalSeconds);
}
}
private void PrintPacketInfo(Packet packet)
{
IpV4Datagram ip = packet.Ethernet.IpV4;
UdpDatagram udp = ip.Udp;
if (!ip.Destination.ToString().Contains("192"))
{
string server = ip.Destination + ":" + udp.DestinationPort;
ConsoleMsg.Write($"Connected to game server : {server}", ConsoleMsg.Type.Info, true);
if (!String.IsNullOrEmpty(Constants.DiscordWebHook))
{
Webhook.SendMessage(PlayerName, server);
}
pm.Break();
}
}
private static void TestReceiveSomePackets(int numPacketsToSend, int numPacketsToGet, int numPacketsToBreakLoop, int packetSize, bool nonBlocking,
PacketCommunicatorReceiveResult expectedResult, int expectedNumPackets, double expectedMinSeconds, double expectedMaxSeconds)
{
string testDescription = "NumPacketsToSend=" + numPacketsToSend + ". NumPacketsToGet=" + numPacketsToGet +
". NumPacketsToBreakLoop=" + numPacketsToBreakLoop + ". PacketSize=" + packetSize +
". NonBlocking=" + nonBlocking;
const string SourceMac = "11:22:33:44:55:66";
const string DestinationMac = "77:88:99:AA:BB:CC";
Packet packetToSend = _random.NextEthernetPacket(packetSize, SourceMac, DestinationMac);
using (PacketCommunicator communicator = OpenLiveDevice())
{
communicator.NonBlocking = nonBlocking;
Assert.AreEqual(nonBlocking, communicator.NonBlocking);
communicator.SetFilter("ether src " + SourceMac + " and ether dst " + DestinationMac);
int numPacketsGot;
for (int i = 0; i != numPacketsToSend; ++i)
{
communicator.SendPacket(packetToSend);
}
if (numPacketsToBreakLoop == 0)
{
communicator.Break();
}
PacketHandler handler = new PacketHandler(packetToSend, communicator, numPacketsToBreakLoop);
DateTime startWaiting = DateTime.Now;
PacketCommunicatorReceiveResult result = communicator.ReceiveSomePackets(out numPacketsGot, numPacketsToGet,
handler.Handle);
DateTime finishedWaiting = DateTime.Now;
Assert.AreEqual(expectedResult, result);
Assert.AreEqual(expectedNumPackets, numPacketsGot, "NumPacketsGot. Test: " + testDescription);
Assert.AreEqual(expectedNumPackets, handler.NumPacketsHandled, "NumPacketsHandled. Test: " + testDescription);
MoreAssert.IsInRange(expectedMinSeconds, expectedMaxSeconds, (finishedWaiting - startWaiting).TotalSeconds, testDescription);
}
}
private static void TestReceivePackets(int numPacketsToSend, int numPacketsToGet, int numPacketsToBreakLoop,
PacketCommunicatorReceiveResult expectedResult, int expectedNumPackets,
double expectedMinSeconds, double expectedMaxSeconds)
{
string testDescription = "NumPacketsToSend=" + numPacketsToSend + ". NumPacketsToGet=" + numPacketsToGet +
". NumPacketsToBreakLoop=" + numPacketsToBreakLoop;
const string SourceMac = "11:22:33:44:55:66";
const string DestinationMac = "77:88:99:AA:BB:CC";
Packet expectedPacket = _random.NextEthernetPacket(24, SourceMac, DestinationMac);
using (PacketCommunicator communicator = OpenOfflineDevice(numPacketsToSend, expectedPacket))
{
communicator.SetFilter("ether src " + SourceMac + " and ether dst " + DestinationMac);
if (numPacketsToBreakLoop == 0)
{
communicator.Break();
}
PacketHandler handler = new PacketHandler(expectedPacket, expectedMinSeconds, expectedMaxSeconds, communicator, numPacketsToBreakLoop);
PacketCommunicatorReceiveResult result = PacketCommunicatorReceiveResult.None;
Thread thread = new Thread(delegate()
{
result = communicator.ReceivePackets(numPacketsToGet, handler.Handle);
});
thread.Start();
if (!thread.Join(TimeSpan.FromSeconds(5)))
{
thread.Abort();
}
Assert.AreEqual(expectedResult, result, testDescription);
Assert.AreEqual(expectedNumPackets, handler.NumPacketsHandled);
}
}
public void Execute(PacketCommunicator packetCommunicator)
{
MacAddress?requestedMacAddress = null;
var timer = new System.Timers.Timer();
timer.Interval = 1000;
timer.AutoReset = true;
timer.Elapsed += (sender, eventArgs) => packetCommunicator.SendPacket(PacketBuilder.Build(DateTime.Now));
timer.Start();
packetCommunicator.ReceivePackets(-1, packet =>
{
if (packet.Ethernet.EtherType == EthernetType.Arp &&
packet.Ethernet.Arp.IsValid &&
packet.Ethernet.Arp.Operation == ArpOperation.Reply &&
packet.Ethernet.Arp.SenderProtocolIpV4Address == IpV4AddressToIdentify)
{
timer.Stop();
requestedMacAddress = new MacAddress(
packet.Ethernet.Arp.SenderHardwareAddress.ToArray().ReadUInt48(0, Endianity.Big)
);
packetCommunicator.Break();
}
});
// TODO: What if it never arrives?
while (requestedMacAddress == null)
{
;
}
OnIdentified(requestedMacAddress.Value);
}
//public Packet CreateDhcpPacket(int optionsSize, byte[] options, bool firstPacket, byte[] clientIp = null)
//{
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = ifHardwareAddress,
// Destination = new MacAddress("FF:FF:FF:FF:FF:FF"),
// EtherType = EthernetType.None,
// };
// IpV4Layer ipV4Layer = new IpV4Layer
// {
// Source = new IpV4Address("0.0.0.0"),
// CurrentDestination = new IpV4Address("255.255.255.255"),
// Fragmentation = IpV4Fragmentation.None,
// HeaderChecksum = null, // Will be filled automatically.
// Identification = ipID,
// Options = IpV4Options.None,
// Protocol = null,
// Ttl = 128,
// TypeOfService = 0,
// };
// UdpLayer udpLayer = new UdpLayer
// {
// SourcePort = 68,
// DestinationPort = 67,
// Checksum = null, // Will be filled automatically.
// CalculateChecksumValue = true,
// };
// Dhcp dhcpLayer = new Dhcp(optionsSize);
// if (firstPacket)
// dhcpId = dhcpLayer.Id;
// else
// dhcpLayer.Id = dhcpId;
// if (clientIp != null)
// dhcpLayer.ClientIp = clientIp;
// dhcpLayer.ClientHardwareAddress = ifHardwareAddressByte;
// dhcpLayer.Options = options;
// PayloadLayer payloadLayer = new PayloadLayer
// {
// Data = new Datagram(dhcpLayer.toByteArray()),
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, udpLayer, payloadLayer);
// return builder.Build(DateTime.Now);
//}
//public void SendArp()
//{
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = ifHardwareAddress,
// Destination = new MacAddress("FF:FF:FF:FF:FF:FF"),
// EtherType = EthernetType.None,
// };
// ArpLayer arpLayer = new ArpLayer
// {
// ProtocolType = EthernetType.IpV4,
// Operation = ArpOperation.Request,
// SenderHardwareAddress = ifHardwareAddressByte.AsReadOnly(),
// SenderProtocolAddress = ownProtocolAddressByte.AsReadOnly(),
// TargetHardwareAddress = new byte[] { 0, 0, 0, 0, 0, 0 }.AsReadOnly(),
// TargetProtocolAddress = gatewayProtocolAddressByte.AsReadOnly(),
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, arpLayer);
// SendPacket(builder.Build(DateTime.Now));
//}
//public void ReceiveIpAddress()
//{
// int retries = 0;
// int timewait = 0;
// dhcpState = 0;
// arpState = 0;
// byte[] options;
// while (true)
// {
// if (dhcpState == 1 && retries > 1 ||
// dhcpState == 3 && retries > 1)
// {
// dhcpState = 6;
// offeredIp = BitConverter.GetBytes(ifProtocolAddress.ToValue() & ifProtocolMask.ToValue() + 1).Reverse().ToArray();
// }
// if (dhcpState == 0 || dhcpState == 1 && timewait > 10)
// {
// options = new byte[]
// {
// 53, 1, 1,
// 61, 7, 1, 0x0A, 0x03, 0x03, 0x03, 0x03, (byte)dhcpClientId,
// 12, 4, 78, 77, 76, 66,
// 60, 8, 0x4d, 0x53, 0x46, 0x54, 0x20, 0x35, 0x2e, 0x30,
// 255,
// 0, 0, 0,
// };
// SendPacket(CreateDhcpPacket(32, options, true));
// if (dhcpState == 0)
// retries = 0;
// else
// retries++;
// timewait = 0;
// dhcpState = 1;
// }
// else if (dhcpState == 2 || dhcpState == 3 && timewait > 10)
// {
// options = new byte[]
// {
// 53, 1, 3,
// 61, 7, 1, 0x0A, 0x03, 0x03, 0x03, 0x03, (byte)dhcpClientId,
// 12, 4, 78, 77, 76, 66,
// 50, 4, offeredIp[0], offeredIp[1], offeredIp[2], offeredIp[3],
// 54, 4, dhcpServer[0], dhcpServer[1], dhcpServer[2], dhcpServer[3],
// 60, 8, 0x4d, 0x53, 0x46, 0x54, 0x20, 0x35, 0x2e, 0x30,
// 255,
// 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// };
// SendPacket(CreateDhcpPacket(60, options, false));
// if (dhcpState == 2)
// retries = 0;
// else
// retries++;
// timewait = 0;
// dhcpState = 3;
// }
// else if (dhcpState == 4 && arpState == 1 && retries > 1)
// {
// if ((BitConverter.ToUInt32(offeredIp.Reverse().ToArray(), 0) + 1 & ifProtocolMask.ToValue()) !=
// (ifProtocolAddress.ToValue() & ifProtocolMask.ToValue()))
// {
// Global.WriteLog("DHCP: IP " + offeredIp.SequenceToString(".") + " is in a different network!");
// offeredIp = BitConverter.GetBytes(ifProtocolAddress.ToValue() & ifProtocolMask.ToValue() + 1).Reverse().ToArray();
// dhcpState = 6;
// arpState = 0;
// continue;
// }
// dhcpState = 5;
// arpState = 0;
// Global.WriteLog("DHCP: IP " + offeredIp.SequenceToString(".") + " OK!");
// dhcpClientId++;
// ownProtocolAddressByte = offeredIp;
// ownProtocolAddressString = ownProtocolAddressByte.SequenceToString(".");
// ownProtocolAddress = new IpV4Address(ownProtocolAddressString);
// SendArp();
// break;
// }
// else if (dhcpState == 4 && arpState == 0 || dhcpState == 4 && arpState == 1 && timewait > 10)
// {
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = ifHardwareAddress,
// Destination = new MacAddress("FF:FF:FF:FF:FF:FF"),
// EtherType = EthernetType.None,
// };
// ArpLayer arpLayer = new ArpLayer
// {
// ProtocolType = EthernetType.IpV4,
// Operation = ArpOperation.Request,
// SenderHardwareAddress = ifHardwareAddressByte.AsReadOnly(),
// SenderProtocolAddress = new byte[] { 0, 0, 0, 0 }.AsReadOnly(),
// TargetHardwareAddress = new byte[] { 0, 0, 0, 0, 0, 0 }.AsReadOnly(),
// TargetProtocolAddress = offeredIp.AsReadOnly(),
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, arpLayer);
// SendPacket(builder.Build(DateTime.Now));
// if (arpState == 0)
// retries = 0;
// else
// retries++;
// timewait = 0;
// arpState = 1;
// }
// else if (dhcpState == 4 && arpState == 2)
// {
// Global.WriteLog("DHCP: IP " + offeredIp.SequenceToString(".") + " is already used!");
// options = new byte[]
// {
// 53, 1, 4,
// 61, 7, 1, 0x0A, 0x03, 0x03, 0x03, 0x03, (byte)dhcpClientId,
// 50, 4, offeredIp[0], offeredIp[1], offeredIp[2], offeredIp[3],
// 54, 4, dhcpServer[0], dhcpServer[1], dhcpServer[2], dhcpServer[3],
// 255,
// //0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
// };
// SendPacket(CreateDhcpPacket(25, options, false, offeredIp));
// arpState = 0;
// dhcpState = 0;
// }
// else if (dhcpState == 6 && arpState == 1 && retries > 1)
// {
// dhcpState = 5;
// arpState = 0;
// Global.WriteLog("IPAlloc: IP " + offeredIp.SequenceToString(".") + " OK!");
// dhcpClientId++;
// ownProtocolAddressByte = offeredIp;
// ownProtocolAddressString = ownProtocolAddressByte.SequenceToString(".");
// ownProtocolAddress = new IpV4Address(ownProtocolAddressString);
// SendArp();
// break;
// }
// else if (dhcpState == 6 && arpState == 0 || dhcpState == 6 && arpState == 1 && timewait > 10)
// {
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = ifHardwareAddress,
// Destination = new MacAddress("FF:FF:FF:FF:FF:FF"),
// EtherType = EthernetType.None,
// };
// ArpLayer arpLayer = new ArpLayer
// {
// ProtocolType = EthernetType.IpV4,
// Operation = ArpOperation.Request,
// SenderHardwareAddress = ifHardwareAddressByte.AsReadOnly(),
// SenderProtocolAddress = new byte[] { 0, 0, 0, 0 }.AsReadOnly(),
// TargetHardwareAddress = new byte[] { 0, 0, 0, 0, 0, 0 }.AsReadOnly(),
// TargetProtocolAddress = offeredIp.AsReadOnly(),
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, arpLayer);
// SendPacket(builder.Build(DateTime.Now));
// if (arpState == 0)
// retries = 0;
// else
// retries++;
// timewait = 0;
// arpState = 1;
// }
// else if (dhcpState == 6 && arpState == 2)
// {
// if ((BitConverter.ToUInt32(offeredIp.Reverse().ToArray(), 0) + 1 & ifProtocolMask.ToValue()) !=
// (ifProtocolAddress.ToValue() & ifProtocolMask.ToValue()))
// {
// Global.WriteLog("IPAlloc: Couldn't allocate IP address!");
// break;
// }
// Global.WriteLog("IPAlloc: IP " + offeredIp.SequenceToString(".") + " is already used!");
// offeredIp = BitConverter.GetBytes((BitConverter.ToUInt32(offeredIp.Reverse().ToArray(), 0) + 1)).Reverse().ToArray();
// arpState = 0;
// }
// Thread.Sleep(100);
// timewait++;
// }
//}
public void ReceivePackets()
{
// Retrieve the device list from the local machine
IList<LivePacketDevice> allDevices = LivePacketDevice.AllLocalMachine;
// Find the NPF device of the interface
PacketDevice selectedDevice = null;
for (int i = 0; i != allDevices.Count; ++i)
{
LivePacketDevice device = allDevices[i];
if (device.Name.ToUpper().Contains(Guid.ToString().ToUpper()))
{
selectedDevice = device;
break;
}
}
if (selectedDevice == null)
{
Initialized.Set();
Global.ShowTrayTip("Load Balancer", "Interface " + Name + " not captured by WinPcap.", System.Windows.Forms.ToolTipIcon.Warning);
Global.WriteLog("Load Balancer: Interface " + Name + " not captured by WinPcap.");
return;
}
try
{
using (communicator = selectedDevice.Open(65536, PacketDeviceOpenAttributes.MaximumResponsiveness, 1000))
{
Global.WriteLog("Load Balancer: Listening on " + Name + "...");
//communicator.SetFilter("(ether dst " + ifHardwareAddressString + " and (ip or arp)) or (ether dst FF:FF:FF:FF:FF:FF and arp)");
communicator.SetFilter("(ether dst " + ifHardwareAddressString + " and ip and (udp or icmp))");
Initialized.Set();
communicator.ReceivePackets(0, (packet) =>
{
if (!ThreadActive.IsSet)
{
communicator.Break();
return;
}
//if (ownProtocolAddressString == null)
//{
// if (packet.Ethernet.IpV4.Udp.SourcePort == 67 && packet.Ethernet.IpV4.Udp.DestinationPort == 68 && (PublicVars.dhcpState == 1 || PublicVars.dhcpState == 3))
// {
// Dhcp dhcpReply = new Dhcp(packet.Ethernet.IpV4.Udp.Payload.ToArray());
// if (PublicVars.dhcpId == dhcpReply.Id && dhcpReply.MessageType == 2)
// {
// if (dhcpReply.getOption((int)DhcpOptionCode.DhcpMsgType)[0] == 2)
// {
// PublicVars.offeredIp = dhcpReply.YourIp;
// PublicVars.dhcpServer = dhcpReply.getOption((int)DhcpOptionCode.DhcpServerId);
// PublicVars.dhcpState = 2;
// }
// else if (dhcpReply.getOption((int)DhcpOptionCode.DhcpMsgType)[0] == 5)
// {
// PublicVars.dhcpState = 4;
// }
// else if (dhcpReply.getOption((int)DhcpOptionCode.DhcpMsgType)[0] == 6)
// {
// PublicVars.offeredIp = null;
// PublicVars.dhcpState = 0;
// PublicVars.dhcpId = 0;
// }
// }
// }
// else if (packet.Ethernet.EtherType == EthernetType.Arp && PublicVars.arpState == 1)
// {
// if (packet.Ethernet.Arp.SenderProtocolAddress.SequenceEqual(PublicVars.offeredIp))
// PublicVars.arpState = 2;
// }
//}
//if (packet.Ethernet.EtherType == EthernetType.Arp)
//{
// if (packet.Ethernet.Arp.TargetProtocolAddress.SequenceEqual(ownProtocolAddressByte) &&
// packet.Ethernet.Arp.Operation == ArpOperation.Request)
// {
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = ifHardwareAddress,
// Destination = packet.Ethernet.Source,
// EtherType = EthernetType.None,
// };
// ArpLayer arpLayer = new ArpLayer
// {
// ProtocolType = EthernetType.IpV4,
// Operation = ArpOperation.Reply,
// SenderHardwareAddress = ifHardwareAddressByte.AsReadOnly(),
// SenderProtocolAddress = packet.Ethernet.Arp.TargetProtocolAddress,
// TargetHardwareAddress = packet.Ethernet.Arp.SenderHardwareAddress,
// TargetProtocolAddress = packet.Ethernet.Arp.SenderProtocolAddress,
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, arpLayer);
// communicator.SendPacket(builder.Build(DateTime.Now));
// }
//}
if (tapWorker.Initialized.IsSet)
{
if (packet.Ethernet.IpV4.Length > MTU) // only UDP and ICMP
{
EthernetLayer ethernetLayer = new EthernetLayer
{
Source = ifHardwareAddress,
Destination = packet.Ethernet.Source,
EtherType = EthernetType.None,
};
IpV4Layer ipV4Layer = new IpV4Layer
{
Source = packet.Ethernet.IpV4.Destination,
CurrentDestination = packet.Ethernet.IpV4.Source,
Fragmentation = packet.Ethernet.IpV4.Fragmentation,
HeaderChecksum = null, // Will be filled automatically.
Identification = 123,
Options = packet.Ethernet.IpV4.Options,
Protocol = packet.Ethernet.IpV4.Protocol,
Ttl = packet.Ethernet.IpV4.Ttl,
TypeOfService = packet.Ethernet.IpV4.TypeOfService,
};
IcmpDestinationUnreachableLayer icmpLayer = new IcmpDestinationUnreachableLayer
{
Code = IcmpCodeDestinationUnreachable.FragmentationNeededAndDoNotFragmentSet,
NextHopMaximumTransmissionUnit = (ushort)MTU,
};
PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, icmpLayer);
SendPacket(builder.Build(DateTime.Now));
// TODO: fix warning spam
if (Global.Config.LoadBalancer.ShowTrayTipsWarnings)
Global.ShowTrayTip("Load Balancer", "IP packet larger than the MTU detected on " + Name + ".\n\nIP fragmentation is not supported.", ToolTipIcon.Warning);
Global.WriteLog("Load Balancer: IP packet larger than the MTU detected on " + Name);
return;
}
if (packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.DoNotFragment ||
packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.None && packet.Ethernet.IpV4.Fragmentation.Offset == 0)
{
if (packet.Ethernet.IpV4.Protocol == IpV4Protocol.InternetControlMessageProtocol)
{
if (packet.Ethernet.IpV4.Destination == ifProtocolAddress)
if ((packet.Ethernet.IpV4.Icmp.MessageType == IcmpMessageType.EchoReply || packet.Ethernet.IpV4.Fragmentation.Offset > 0))
{
EthernetLayer ethernetLayer = new EthernetLayer
{
Source = tapWorker.ownHardwareAddress,
Destination = tapWorker.ifHardwareAddress,
EtherType = EthernetType.None,
};
IpV4Layer ipV4Layer = new IpV4Layer
{
Source = packet.Ethernet.IpV4.Source,
CurrentDestination = tapWorker.ifProtocolAddress,
Fragmentation = packet.Ethernet.IpV4.Fragmentation,
HeaderChecksum = null, // Will be filled automatically.
Identification = packet.Ethernet.IpV4.Identification,
Options = packet.Ethernet.IpV4.Options,
Protocol = packet.Ethernet.IpV4.Protocol,
Ttl = packet.Ethernet.IpV4.Ttl,
TypeOfService = packet.Ethernet.IpV4.TypeOfService,
};
PayloadLayer payloadLayer = new PayloadLayer
{
Data = new Datagram(packet.Ethernet.IpV4.Payload.ToArray()),
};
PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, payloadLayer);
tapWorker.SendPacket(builder.Build(DateTime.Now));
}
}
//else if (packet.Ethernet.IpV4.Protocol == IpV4Protocol.Tcp)
//{
// if (packet.Ethernet.IpV4.Destination == ifProtocolAddress)
// {
// lock (RoutingTable.lockObj)
// routingObject = RoutingTable.TranslateBack(packet);
// if (routingObject.ifIndex == -1)
// return;
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = TapWorker.ownHardwareAddress,
// Destination = TapWorker.ifHardwareAddress,
// EtherType = packet.Ethernet.EtherType,
// };
// IpV4Layer ipV4Layer = new IpV4Layer
// {
// Source = packet.Ethernet.IpV4.Source,
// CurrentDestination = TapWorker.ifProtocolAddress,
// Fragmentation = packet.Ethernet.IpV4.Fragmentation,
// HeaderChecksum = null, // Will be filled automatically.
// Identification = packet.Ethernet.IpV4.Identification,
// Options = packet.Ethernet.IpV4.Options,
// Protocol = packet.Ethernet.IpV4.Protocol,
// Ttl = packet.Ethernet.IpV4.Ttl,
// TypeOfService = packet.Ethernet.IpV4.TypeOfService,
// };
// TcpLayer tcpLayer = new TcpLayer
// {
// SourcePort = packet.Ethernet.IpV4.Tcp.SourcePort,
// DestinationPort = routingObject.localPort,
// Checksum = null, // Will be filled automatically.
// SequenceNumber = packet.Ethernet.IpV4.Tcp.SequenceNumber,
// AcknowledgmentNumber = routingObject.ack,
// ControlBits = packet.Ethernet.IpV4.Tcp.ControlBits,
// Window = packet.Ethernet.IpV4.Tcp.Window,
// UrgentPointer = packet.Ethernet.IpV4.Tcp.UrgentPointer,
// Options = packet.Ethernet.IpV4.Tcp.Options,
// };
// PayloadLayer payloadLayer = new PayloadLayer
// {
// Data = new Datagram(packet.Ethernet.IpV4.Tcp.Payload.ToArray()),
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, tcpLayer, payloadLayer);
// MainThread.tapWorker.SendPacket(builder.Build(DateTime.Now));
// }
//}
else if (packet.Ethernet.IpV4.Protocol == IpV4Protocol.Udp)
{
if (packet.Ethernet.IpV4.Destination == ifProtocolAddress)
{
phyRoutingObject = RoutingTable.IsUdpConn(packet);
if (phyRoutingObject.ifIndex == -1)
return;
EthernetLayer ethernetLayer = new EthernetLayer
{
Source = tapWorker.ownHardwareAddress,
Destination = tapWorker.ifHardwareAddress,
EtherType = packet.Ethernet.EtherType,
};
IpV4Layer ipV4Layer = new IpV4Layer
{
Source = packet.Ethernet.IpV4.Source,
CurrentDestination = tapWorker.ifProtocolAddress,
Fragmentation = packet.Ethernet.IpV4.Fragmentation,
HeaderChecksum = null, // Will be filled automatically.
Identification = packet.Ethernet.IpV4.Identification,
Options = packet.Ethernet.IpV4.Options,
Protocol = packet.Ethernet.IpV4.Protocol,
Ttl = packet.Ethernet.IpV4.Ttl,
TypeOfService = packet.Ethernet.IpV4.TypeOfService,
};
UdpLayer udpLayer = new UdpLayer
{
SourcePort = packet.Ethernet.IpV4.Udp.SourcePort,
DestinationPort = packet.Ethernet.IpV4.Udp.DestinationPort,
Checksum = null, // Will be filled automatically.
CalculateChecksumValue = packet.Ethernet.IpV4.Udp.IsChecksumOptional,
};
PayloadLayer payloadLayer = new PayloadLayer
{
Data = new Datagram(packet.Ethernet.IpV4.Udp.Payload.ToArray()),
};
PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, udpLayer, payloadLayer);
tapWorker.SendPacket(builder.Build(DateTime.Now));
}
}
}
else if (packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.MoreFragments ||
packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.None && packet.Ethernet.IpV4.Fragmentation.Offset > 0)
{
// TODO: fix warning spam
if (Global.Config.LoadBalancer.ShowTrayTipsWarnings)
Global.ShowTrayTip("Load Balancer", "IP fragmentation detected on " + Name + ".\n\nIP fragmentation is not supported.", ToolTipIcon.Warning);
Global.WriteLog("Load Balancer: IP fragmentation detected on " + Name);
//fragments = fragBuffer.Add(packet);
//if (fragments != null)
// for (int i = 0; i < fragments.Count; i++)
// {
// IpV4Handler(fragments[i], fragments);
// }
}
}
});
}
}
catch (Exception e)
{
if (ThreadActive.IsSet)
{
ThreadActive.Reset();
Global.WriteLog("Load Balancer: " + Name + " has disconnected");
if (Global.Config.Gadget.Debug)
Global.WriteLog(e.ToString());
Global.ShowTrayTip("Load Balancer", Name + " has disconnected", System.Windows.Forms.ToolTipIcon.Warning);
}
}
}
public void StopCapturing()
{
//stopSignal = true;
_communicator.Break();
FireStatusChanged("Listening stopped.");
}
public static MacAddress?GetMacByIpAddress(LivePacketDevice iface, PacketCommunicator communicator, IpV4Address sourceAddress, IpV4Address targetAddress, int timeout = 2000)
{
var sourcePhysicalAddress = iface.GetNetworkInterface().GetPhysicalAddress();
MacAddress?result = null;
var resultLock = new object();
var tokenSource = new CancellationTokenSource();
var cancellationToken = tokenSource.Token;
var packet = PacketBuilder.Build(
DateTime.Now,
new EthernetLayer()
{
EtherType = EthernetType.None,
Source = PhysicalAddressToMacAddress(sourcePhysicalAddress),
Destination = BroadcastMac,
},
new ArpLayer()
{
ProtocolType = EthernetType.IpV4,
Operation = ArpOperation.Request,
SenderProtocolAddress = sourceAddress.ToBytes(),
SenderHardwareAddress = sourcePhysicalAddress.GetAddressBytes().AsReadOnly(),
TargetProtocolAddress = targetAddress.ToBytes(),
TargetHardwareAddress = MacAddress.Zero.ToBytes(),
}
);
communicator.SendPacket(packet);
Task.Run(() =>
{
while (true)
{
if (cancellationToken.IsCancellationRequested)
{
break;
}
communicator.ReceivePacket(out Packet p);
if (p != null &&
p.IsValid &&
p.Ethernet.IsValid &&
p.Ethernet.EtherType == EthernetType.Arp &&
p.Ethernet.Arp.IsValid &&
p.Ethernet.Arp.Operation == ArpOperation.Reply &&
p.Ethernet.Arp.SenderProtocolIpV4Address == targetAddress &&
p.Ethernet.Arp.TargetProtocolIpV4Address == sourceAddress)
{
lock (resultLock)
result = new MacAddress(BitConverter.ToString(p.Ethernet.Arp.SenderHardwareAddress.ToArray()).Replace('-', ':'));
break;
}
}
});
var stopwatch = new Stopwatch();
stopwatch.Start();
while (true)
{
lock (resultLock)
{
if (result != null)
{
return(result);
}
}
if (stopwatch.ElapsedMilliseconds >= timeout)
{
tokenSource.Cancel();
communicator.Break();
break;
}
else
{
Thread.Sleep(100);
}
}
return(result);
}
public void PacketHandler()
{
Packet packet;
try
{
IsBusy = true;
cts = new CancellationTokenSource();
CancellationToken token = cts.Token;
// Open the device
communicator = SelectedInterface.Open(65536, // 65536 guarantees that the whole packet will be captured on all the link layers
PacketDeviceOpenAttributes.Promiscuous, // promiscuous mode
1000); // read timeout
if (!string.IsNullOrEmpty(trafficFilter))
{
communicator.SetFilter(trafficFilter);
}
do
{
PacketCommunicatorReceiveResult result = communicator.ReceivePacket(out packet);
switch (result)
{
case PacketCommunicatorReceiveResult.Timeout:
// Timeout elapsed
continue;
case PacketCommunicatorReceiveResult.Ok:
if (packet.Ethernet.EtherType == EthernetType.IpV4)
{
Application.Current.Dispatcher.Invoke(() =>
{
packets.Add(packet);
StatHandler.UpdateStats(packet);
});
}
break;
default:
throw new InvalidOperationException("PacketCommunicator InvalidOperationException");
}
} while (!token.IsCancellationRequested);
}
catch (Exception ex)
{
MessageBox.Show("A handled exception occurred: " + ex.Message, "Tcp/Ip sniffer",
MessageBoxButton.OK, MessageBoxImage.Warning);
}
finally
{
communicator.Break();
communicator.Dispose();
communicator = null;
cts.Dispose();
cts = null;
IsBusy = false;
}
}
public void ReceivePackets()
{
// Retrieve the device list from the local machine
IList <LivePacketDevice> allDevices = LivePacketDevice.AllLocalMachine;
// Find the NPF device of the TAP interface
PacketDevice selectedDevice = null;
for (int i = 0; i != allDevices.Count; ++i)
{
LivePacketDevice device = allDevices[i];
if (device.Name.ToUpper().Contains(Guid.ToString().ToUpper()))
{
selectedDevice = device;
break;
}
}
if (selectedDevice == null)
{
Initialized.Set();
Global.ShowTrayTip("Load Balancer", "Interface " + Name + " not captured by WinPcap.", System.Windows.Forms.ToolTipIcon.Warning);
Global.WriteLog("Load Balancer: Interface " + Name + " not captured by WinPcap.");
return;
}
try
{
using (communicator = selectedDevice.Open(65536, PacketDeviceOpenAttributes.MaximumResponsiveness, 1000))
{
Global.WriteLog("Load Balancer: Listening on " + Name + "...");
communicator.SetFilter("(ether dst " + ownHardwareAddressString + " and ((ip and (tcp or udp or icmp)) or arp)) or (ether dst FF:FF:FF:FF:FF:FF and arp)");
Initialized.Set();
communicator.ReceivePackets(0, (packet) =>
{
if (!ThreadActive.IsSet)
{
communicator.Break();
return;
}
if (packet.Ethernet.EtherType == EthernetType.Arp)
{
if (packet.Ethernet.Arp.TargetProtocolAddress.SequenceEqual(ownProtocolAddressByte) && packet.Ethernet.Arp.Operation == ArpOperation.Request)
{
EthernetLayer ethernetLayer = new EthernetLayer
{
Source = ownHardwareAddress,
Destination = packet.Ethernet.Source,
EtherType = EthernetType.None,
};
ArpLayer arpLayer = new ArpLayer
{
ProtocolType = EthernetType.IpV4,
Operation = ArpOperation.Reply,
SenderHardwareAddress = ownHardwareAddressByte.AsReadOnly(),
SenderProtocolAddress = packet.Ethernet.Arp.TargetProtocolAddress,
TargetHardwareAddress = packet.Ethernet.Arp.SenderHardwareAddress,
TargetProtocolAddress = packet.Ethernet.Arp.SenderProtocolAddress,
};
PacketBuilder builder = new PacketBuilder(ethernetLayer, arpLayer);
SendPacket(builder.Build(DateTime.Now));
}
}
else if (packet.Ethernet.EtherType.ToString() == "IpV4")
{
if (packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.DoNotFragment ||
packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.None && packet.Ethernet.IpV4.Fragmentation.Offset == 0)
{
IpV4Handler(packet);
}
else if (packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.MoreFragments ||
packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.None && packet.Ethernet.IpV4.Fragmentation.Offset > 0)
{
// TODO: fix warning spam
if (Global.Config.LoadBalancer.ShowTrayTipsWarnings)
{
Global.ShowTrayTip("Load Balancer", "IP fragmentation detected on " + Name + ".\n\nIP fragmentation is not supported.", ToolTipIcon.Warning);
}
Global.WriteLog("Load Balancer: IP fragmentation detected on " + Name);
//fragments = fragBuffer.Add(packet);
//if (fragments != null)
// for (int i = 0; i < fragments.Count; i++)
// {
// IpV4Handler(fragments[i], fragments);
// }
}
}
});
}
}
catch (Exception e)
{
if (ThreadActive.IsSet)
{
ThreadActive.Reset();
Global.WriteLog("Load Balancer: " + Name + " has disconnected");
if (Global.Config.Gadget.Debug)
{
Global.WriteLog(e.ToString());
}
Global.ShowTrayTip("Load Balancer", Name + " has disconnected", System.Windows.Forms.ToolTipIcon.Warning);
}
}
}
//public Packet CreateDhcpPacket(int optionsSize, byte[] options, bool firstPacket, byte[] clientIp = null)
//{
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = ifHardwareAddress,
// Destination = new MacAddress("FF:FF:FF:FF:FF:FF"),
// EtherType = EthernetType.None,
// };
// IpV4Layer ipV4Layer = new IpV4Layer
// {
// Source = new IpV4Address("0.0.0.0"),
// CurrentDestination = new IpV4Address("255.255.255.255"),
// Fragmentation = IpV4Fragmentation.None,
// HeaderChecksum = null, // Will be filled automatically.
// Identification = ipID,
// Options = IpV4Options.None,
// Protocol = null,
// Ttl = 128,
// TypeOfService = 0,
// };
// UdpLayer udpLayer = new UdpLayer
// {
// SourcePort = 68,
// DestinationPort = 67,
// Checksum = null, // Will be filled automatically.
// CalculateChecksumValue = true,
// };
// Dhcp dhcpLayer = new Dhcp(optionsSize);
// if (firstPacket)
// dhcpId = dhcpLayer.Id;
// else
// dhcpLayer.Id = dhcpId;
// if (clientIp != null)
// dhcpLayer.ClientIp = clientIp;
// dhcpLayer.ClientHardwareAddress = ifHardwareAddressByte;
// dhcpLayer.Options = options;
// PayloadLayer payloadLayer = new PayloadLayer
// {
// Data = new Datagram(dhcpLayer.toByteArray()),
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, udpLayer, payloadLayer);
// return builder.Build(DateTime.Now);
//}
//public void SendArp()
//{
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = ifHardwareAddress,
// Destination = new MacAddress("FF:FF:FF:FF:FF:FF"),
// EtherType = EthernetType.None,
// };
// ArpLayer arpLayer = new ArpLayer
// {
// ProtocolType = EthernetType.IpV4,
// Operation = ArpOperation.Request,
// SenderHardwareAddress = ifHardwareAddressByte.AsReadOnly(),
// SenderProtocolAddress = ownProtocolAddressByte.AsReadOnly(),
// TargetHardwareAddress = new byte[] { 0, 0, 0, 0, 0, 0 }.AsReadOnly(),
// TargetProtocolAddress = gatewayProtocolAddressByte.AsReadOnly(),
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, arpLayer);
// SendPacket(builder.Build(DateTime.Now));
//}
//public void ReceiveIpAddress()
//{
// int retries = 0;
// int timewait = 0;
// dhcpState = 0;
// arpState = 0;
// byte[] options;
// while (true)
// {
// if (dhcpState == 1 && retries > 1 ||
// dhcpState == 3 && retries > 1)
// {
// dhcpState = 6;
// offeredIp = BitConverter.GetBytes(ifProtocolAddress.ToValue() & ifProtocolMask.ToValue() + 1).Reverse().ToArray();
// }
// if (dhcpState == 0 || dhcpState == 1 && timewait > 10)
// {
// options = new byte[]
// {
// 53, 1, 1,
// 61, 7, 1, 0x0A, 0x03, 0x03, 0x03, 0x03, (byte)dhcpClientId,
// 12, 4, 78, 77, 76, 66,
// 60, 8, 0x4d, 0x53, 0x46, 0x54, 0x20, 0x35, 0x2e, 0x30,
// 255,
// 0, 0, 0,
// };
// SendPacket(CreateDhcpPacket(32, options, true));
// if (dhcpState == 0)
// retries = 0;
// else
// retries++;
// timewait = 0;
// dhcpState = 1;
// }
// else if (dhcpState == 2 || dhcpState == 3 && timewait > 10)
// {
// options = new byte[]
// {
// 53, 1, 3,
// 61, 7, 1, 0x0A, 0x03, 0x03, 0x03, 0x03, (byte)dhcpClientId,
// 12, 4, 78, 77, 76, 66,
// 50, 4, offeredIp[0], offeredIp[1], offeredIp[2], offeredIp[3],
// 54, 4, dhcpServer[0], dhcpServer[1], dhcpServer[2], dhcpServer[3],
// 60, 8, 0x4d, 0x53, 0x46, 0x54, 0x20, 0x35, 0x2e, 0x30,
// 255,
// 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// };
// SendPacket(CreateDhcpPacket(60, options, false));
// if (dhcpState == 2)
// retries = 0;
// else
// retries++;
// timewait = 0;
// dhcpState = 3;
// }
// else if (dhcpState == 4 && arpState == 1 && retries > 1)
// {
// if ((BitConverter.ToUInt32(offeredIp.Reverse().ToArray(), 0) + 1 & ifProtocolMask.ToValue()) !=
// (ifProtocolAddress.ToValue() & ifProtocolMask.ToValue()))
// {
// Global.WriteLog("DHCP: IP " + offeredIp.SequenceToString(".") + " is in a different network!");
// offeredIp = BitConverter.GetBytes(ifProtocolAddress.ToValue() & ifProtocolMask.ToValue() + 1).Reverse().ToArray();
// dhcpState = 6;
// arpState = 0;
// continue;
// }
// dhcpState = 5;
// arpState = 0;
// Global.WriteLog("DHCP: IP " + offeredIp.SequenceToString(".") + " OK!");
// dhcpClientId++;
// ownProtocolAddressByte = offeredIp;
// ownProtocolAddressString = ownProtocolAddressByte.SequenceToString(".");
// ownProtocolAddress = new IpV4Address(ownProtocolAddressString);
// SendArp();
// break;
// }
// else if (dhcpState == 4 && arpState == 0 || dhcpState == 4 && arpState == 1 && timewait > 10)
// {
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = ifHardwareAddress,
// Destination = new MacAddress("FF:FF:FF:FF:FF:FF"),
// EtherType = EthernetType.None,
// };
// ArpLayer arpLayer = new ArpLayer
// {
// ProtocolType = EthernetType.IpV4,
// Operation = ArpOperation.Request,
// SenderHardwareAddress = ifHardwareAddressByte.AsReadOnly(),
// SenderProtocolAddress = new byte[] { 0, 0, 0, 0 }.AsReadOnly(),
// TargetHardwareAddress = new byte[] { 0, 0, 0, 0, 0, 0 }.AsReadOnly(),
// TargetProtocolAddress = offeredIp.AsReadOnly(),
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, arpLayer);
// SendPacket(builder.Build(DateTime.Now));
// if (arpState == 0)
// retries = 0;
// else
// retries++;
// timewait = 0;
// arpState = 1;
// }
// else if (dhcpState == 4 && arpState == 2)
// {
// Global.WriteLog("DHCP: IP " + offeredIp.SequenceToString(".") + " is already used!");
// options = new byte[]
// {
// 53, 1, 4,
// 61, 7, 1, 0x0A, 0x03, 0x03, 0x03, 0x03, (byte)dhcpClientId,
// 50, 4, offeredIp[0], offeredIp[1], offeredIp[2], offeredIp[3],
// 54, 4, dhcpServer[0], dhcpServer[1], dhcpServer[2], dhcpServer[3],
// 255,
// //0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
// };
// SendPacket(CreateDhcpPacket(25, options, false, offeredIp));
// arpState = 0;
// dhcpState = 0;
// }
// else if (dhcpState == 6 && arpState == 1 && retries > 1)
// {
// dhcpState = 5;
// arpState = 0;
// Global.WriteLog("IPAlloc: IP " + offeredIp.SequenceToString(".") + " OK!");
// dhcpClientId++;
// ownProtocolAddressByte = offeredIp;
// ownProtocolAddressString = ownProtocolAddressByte.SequenceToString(".");
// ownProtocolAddress = new IpV4Address(ownProtocolAddressString);
// SendArp();
// break;
// }
// else if (dhcpState == 6 && arpState == 0 || dhcpState == 6 && arpState == 1 && timewait > 10)
// {
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = ifHardwareAddress,
// Destination = new MacAddress("FF:FF:FF:FF:FF:FF"),
// EtherType = EthernetType.None,
// };
// ArpLayer arpLayer = new ArpLayer
// {
// ProtocolType = EthernetType.IpV4,
// Operation = ArpOperation.Request,
// SenderHardwareAddress = ifHardwareAddressByte.AsReadOnly(),
// SenderProtocolAddress = new byte[] { 0, 0, 0, 0 }.AsReadOnly(),
// TargetHardwareAddress = new byte[] { 0, 0, 0, 0, 0, 0 }.AsReadOnly(),
// TargetProtocolAddress = offeredIp.AsReadOnly(),
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, arpLayer);
// SendPacket(builder.Build(DateTime.Now));
// if (arpState == 0)
// retries = 0;
// else
// retries++;
// timewait = 0;
// arpState = 1;
// }
// else if (dhcpState == 6 && arpState == 2)
// {
// if ((BitConverter.ToUInt32(offeredIp.Reverse().ToArray(), 0) + 1 & ifProtocolMask.ToValue()) !=
// (ifProtocolAddress.ToValue() & ifProtocolMask.ToValue()))
// {
// Global.WriteLog("IPAlloc: Couldn't allocate IP address!");
// break;
// }
// Global.WriteLog("IPAlloc: IP " + offeredIp.SequenceToString(".") + " is already used!");
// offeredIp = BitConverter.GetBytes((BitConverter.ToUInt32(offeredIp.Reverse().ToArray(), 0) + 1)).Reverse().ToArray();
// arpState = 0;
// }
// Thread.Sleep(100);
// timewait++;
// }
//}
public void ReceivePackets()
{
// Retrieve the device list from the local machine
IList <LivePacketDevice> allDevices = LivePacketDevice.AllLocalMachine;
// Find the NPF device of the interface
PacketDevice selectedDevice = null;
for (int i = 0; i != allDevices.Count; ++i)
{
LivePacketDevice device = allDevices[i];
if (device.Name.ToUpper().Contains(Guid.ToString().ToUpper()))
{
selectedDevice = device;
break;
}
}
if (selectedDevice == null)
{
Initialized.Set();
Global.ShowTrayTip("Load Balancer", "Interface " + Name + " not captured by WinPcap.", System.Windows.Forms.ToolTipIcon.Warning);
Global.WriteLog("Load Balancer: Interface " + Name + " not captured by WinPcap.");
return;
}
try
{
using (communicator = selectedDevice.Open(65536, PacketDeviceOpenAttributes.MaximumResponsiveness, 1000))
{
Global.WriteLog("Load Balancer: Listening on " + Name + "...");
//communicator.SetFilter("(ether dst " + ifHardwareAddressString + " and (ip or arp)) or (ether dst FF:FF:FF:FF:FF:FF and arp)");
communicator.SetFilter("(ether dst " + ifHardwareAddressString + " and ip and (udp or icmp))");
Initialized.Set();
communicator.ReceivePackets(0, (packet) =>
{
if (!ThreadActive.IsSet)
{
communicator.Break();
return;
}
//if (ownProtocolAddressString == null)
//{
// if (packet.Ethernet.IpV4.Udp.SourcePort == 67 && packet.Ethernet.IpV4.Udp.DestinationPort == 68 && (PublicVars.dhcpState == 1 || PublicVars.dhcpState == 3))
// {
// Dhcp dhcpReply = new Dhcp(packet.Ethernet.IpV4.Udp.Payload.ToArray());
// if (PublicVars.dhcpId == dhcpReply.Id && dhcpReply.MessageType == 2)
// {
// if (dhcpReply.getOption((int)DhcpOptionCode.DhcpMsgType)[0] == 2)
// {
// PublicVars.offeredIp = dhcpReply.YourIp;
// PublicVars.dhcpServer = dhcpReply.getOption((int)DhcpOptionCode.DhcpServerId);
// PublicVars.dhcpState = 2;
// }
// else if (dhcpReply.getOption((int)DhcpOptionCode.DhcpMsgType)[0] == 5)
// {
// PublicVars.dhcpState = 4;
// }
// else if (dhcpReply.getOption((int)DhcpOptionCode.DhcpMsgType)[0] == 6)
// {
// PublicVars.offeredIp = null;
// PublicVars.dhcpState = 0;
// PublicVars.dhcpId = 0;
// }
// }
// }
// else if (packet.Ethernet.EtherType == EthernetType.Arp && PublicVars.arpState == 1)
// {
// if (packet.Ethernet.Arp.SenderProtocolAddress.SequenceEqual(PublicVars.offeredIp))
// PublicVars.arpState = 2;
// }
//}
//if (packet.Ethernet.EtherType == EthernetType.Arp)
//{
// if (packet.Ethernet.Arp.TargetProtocolAddress.SequenceEqual(ownProtocolAddressByte) &&
// packet.Ethernet.Arp.Operation == ArpOperation.Request)
// {
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = ifHardwareAddress,
// Destination = packet.Ethernet.Source,
// EtherType = EthernetType.None,
// };
// ArpLayer arpLayer = new ArpLayer
// {
// ProtocolType = EthernetType.IpV4,
// Operation = ArpOperation.Reply,
// SenderHardwareAddress = ifHardwareAddressByte.AsReadOnly(),
// SenderProtocolAddress = packet.Ethernet.Arp.TargetProtocolAddress,
// TargetHardwareAddress = packet.Ethernet.Arp.SenderHardwareAddress,
// TargetProtocolAddress = packet.Ethernet.Arp.SenderProtocolAddress,
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, arpLayer);
// communicator.SendPacket(builder.Build(DateTime.Now));
// }
//}
if (tapWorker.Initialized.IsSet)
{
if (packet.Ethernet.IpV4.Length > MTU) // only UDP and ICMP
{
EthernetLayer ethernetLayer = new EthernetLayer
{
Source = ifHardwareAddress,
Destination = packet.Ethernet.Source,
EtherType = EthernetType.None,
};
IpV4Layer ipV4Layer = new IpV4Layer
{
Source = packet.Ethernet.IpV4.Destination,
CurrentDestination = packet.Ethernet.IpV4.Source,
Fragmentation = packet.Ethernet.IpV4.Fragmentation,
HeaderChecksum = null, // Will be filled automatically.
Identification = 123,
Options = packet.Ethernet.IpV4.Options,
Protocol = packet.Ethernet.IpV4.Protocol,
Ttl = packet.Ethernet.IpV4.Ttl,
TypeOfService = packet.Ethernet.IpV4.TypeOfService,
};
IcmpDestinationUnreachableLayer icmpLayer = new IcmpDestinationUnreachableLayer
{
Code = IcmpCodeDestinationUnreachable.FragmentationNeededAndDoNotFragmentSet,
NextHopMaximumTransmissionUnit = (ushort)MTU,
};
PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, icmpLayer);
SendPacket(builder.Build(DateTime.Now));
// TODO: fix warning spam
if (Global.Config.LoadBalancer.ShowTrayTipsWarnings)
{
Global.ShowTrayTip("Load Balancer", "IP packet larger than the MTU detected on " + Name + ".\n\nIP fragmentation is not supported.", ToolTipIcon.Warning);
}
Global.WriteLog("Load Balancer: IP packet larger than the MTU detected on " + Name);
return;
}
if (packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.DoNotFragment ||
packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.None && packet.Ethernet.IpV4.Fragmentation.Offset == 0)
{
if (packet.Ethernet.IpV4.Protocol == IpV4Protocol.InternetControlMessageProtocol)
{
if (packet.Ethernet.IpV4.Destination == ifProtocolAddress)
{
if ((packet.Ethernet.IpV4.Icmp.MessageType == IcmpMessageType.EchoReply || packet.Ethernet.IpV4.Fragmentation.Offset > 0))
{
EthernetLayer ethernetLayer = new EthernetLayer
{
Source = tapWorker.ownHardwareAddress,
Destination = tapWorker.ifHardwareAddress,
EtherType = EthernetType.None,
};
IpV4Layer ipV4Layer = new IpV4Layer
{
Source = packet.Ethernet.IpV4.Source,
CurrentDestination = tapWorker.ifProtocolAddress,
Fragmentation = packet.Ethernet.IpV4.Fragmentation,
HeaderChecksum = null, // Will be filled automatically.
Identification = packet.Ethernet.IpV4.Identification,
Options = packet.Ethernet.IpV4.Options,
Protocol = packet.Ethernet.IpV4.Protocol,
Ttl = packet.Ethernet.IpV4.Ttl,
TypeOfService = packet.Ethernet.IpV4.TypeOfService,
};
PayloadLayer payloadLayer = new PayloadLayer
{
Data = new Datagram(packet.Ethernet.IpV4.Payload.ToArray()),
};
PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, payloadLayer);
tapWorker.SendPacket(builder.Build(DateTime.Now));
}
}
}
//else if (packet.Ethernet.IpV4.Protocol == IpV4Protocol.Tcp)
//{
// if (packet.Ethernet.IpV4.Destination == ifProtocolAddress)
// {
// lock (RoutingTable.lockObj)
// routingObject = RoutingTable.TranslateBack(packet);
// if (routingObject.ifIndex == -1)
// return;
// EthernetLayer ethernetLayer = new EthernetLayer
// {
// Source = TapWorker.ownHardwareAddress,
// Destination = TapWorker.ifHardwareAddress,
// EtherType = packet.Ethernet.EtherType,
// };
// IpV4Layer ipV4Layer = new IpV4Layer
// {
// Source = packet.Ethernet.IpV4.Source,
// CurrentDestination = TapWorker.ifProtocolAddress,
// Fragmentation = packet.Ethernet.IpV4.Fragmentation,
// HeaderChecksum = null, // Will be filled automatically.
// Identification = packet.Ethernet.IpV4.Identification,
// Options = packet.Ethernet.IpV4.Options,
// Protocol = packet.Ethernet.IpV4.Protocol,
// Ttl = packet.Ethernet.IpV4.Ttl,
// TypeOfService = packet.Ethernet.IpV4.TypeOfService,
// };
// TcpLayer tcpLayer = new TcpLayer
// {
// SourcePort = packet.Ethernet.IpV4.Tcp.SourcePort,
// DestinationPort = routingObject.localPort,
// Checksum = null, // Will be filled automatically.
// SequenceNumber = packet.Ethernet.IpV4.Tcp.SequenceNumber,
// AcknowledgmentNumber = routingObject.ack,
// ControlBits = packet.Ethernet.IpV4.Tcp.ControlBits,
// Window = packet.Ethernet.IpV4.Tcp.Window,
// UrgentPointer = packet.Ethernet.IpV4.Tcp.UrgentPointer,
// Options = packet.Ethernet.IpV4.Tcp.Options,
// };
// PayloadLayer payloadLayer = new PayloadLayer
// {
// Data = new Datagram(packet.Ethernet.IpV4.Tcp.Payload.ToArray()),
// };
// PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, tcpLayer, payloadLayer);
// MainThread.tapWorker.SendPacket(builder.Build(DateTime.Now));
// }
//}
else if (packet.Ethernet.IpV4.Protocol == IpV4Protocol.Udp)
{
if (packet.Ethernet.IpV4.Destination == ifProtocolAddress)
{
phyRoutingObject = RoutingTable.IsUdpConn(packet);
if (phyRoutingObject.ifIndex == -1)
{
return;
}
EthernetLayer ethernetLayer = new EthernetLayer
{
Source = tapWorker.ownHardwareAddress,
Destination = tapWorker.ifHardwareAddress,
EtherType = packet.Ethernet.EtherType,
};
IpV4Layer ipV4Layer = new IpV4Layer
{
Source = packet.Ethernet.IpV4.Source,
CurrentDestination = tapWorker.ifProtocolAddress,
Fragmentation = packet.Ethernet.IpV4.Fragmentation,
HeaderChecksum = null, // Will be filled automatically.
Identification = packet.Ethernet.IpV4.Identification,
Options = packet.Ethernet.IpV4.Options,
Protocol = packet.Ethernet.IpV4.Protocol,
Ttl = packet.Ethernet.IpV4.Ttl,
TypeOfService = packet.Ethernet.IpV4.TypeOfService,
};
UdpLayer udpLayer = new UdpLayer
{
SourcePort = packet.Ethernet.IpV4.Udp.SourcePort,
DestinationPort = packet.Ethernet.IpV4.Udp.DestinationPort,
Checksum = null, // Will be filled automatically.
CalculateChecksumValue = packet.Ethernet.IpV4.Udp.IsChecksumOptional,
};
PayloadLayer payloadLayer = new PayloadLayer
{
Data = new Datagram(packet.Ethernet.IpV4.Udp.Payload.ToArray()),
};
PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, udpLayer, payloadLayer);
tapWorker.SendPacket(builder.Build(DateTime.Now));
}
}
}
else if (packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.MoreFragments ||
packet.Ethernet.IpV4.Fragmentation.Options == IpV4FragmentationOptions.None && packet.Ethernet.IpV4.Fragmentation.Offset > 0)
{
// TODO: fix warning spam
if (Global.Config.LoadBalancer.ShowTrayTipsWarnings)
{
Global.ShowTrayTip("Load Balancer", "IP fragmentation detected on " + Name + ".\n\nIP fragmentation is not supported.", ToolTipIcon.Warning);
}
Global.WriteLog("Load Balancer: IP fragmentation detected on " + Name);
//fragments = fragBuffer.Add(packet);
//if (fragments != null)
// for (int i = 0; i < fragments.Count; i++)
// {
// IpV4Handler(fragments[i], fragments);
// }
}
}
});
}
}
catch (Exception e)
{
if (ThreadActive.IsSet)
{
ThreadActive.Reset();
Global.WriteLog("Load Balancer: " + Name + " has disconnected");
if (Global.Config.Gadget.Debug)
{
Global.WriteLog(e.ToString());
}
Global.ShowTrayTip("Load Balancer", Name + " has disconnected", System.Windows.Forms.ToolTipIcon.Warning);
}
}
}
public void Stop()
{
ThreadActive.Reset();
try { communicator.Break(); }
catch { }
}
private void buttonStopCapture_Click(object sender, EventArgs e)
{
communicator.Break();
label_Status.Text = "Not Running";
label_Status.ForeColor = System.Drawing.ColorTranslator.FromHtml("#FF0000");
}
public static void Durdur()
{
communicator.Break();
}
private void mWorkingThread_DoWork(object sender, DoWorkEventArgs e)
{
PacketDevice packetDevice = (PacketDevice)e.Argument;
// Open the device
PacketCommunicator communicator = packetDevice.Open(65536, PacketDeviceOpenAttributes.Promiscuous | PacketDeviceOpenAttributes.NoCaptureLocal | PacketDeviceOpenAttributes.MaximumResponsiveness, 30000);
communicator.SetFilter("net (87.119.203.0/24 or 94.236.0.0/16 or 31.222.148.0/24) and port 80");
Debug.WriteLine("Worker listening on " + packetDevice.Description + "...");
// Retrieve the packets
Packet packet;
DsoChatPacket chatPacket = null;
do
{
// Thread should exit/cancel work
if (mWorkingThread.CancellationPending == true)
{
communicator.Break();
break;
}
// Pause?
if (mPauseCapture)
{
Thread.Sleep(1000);
continue;
}
// Wait for next packet
PacketCommunicatorReceiveResult result = communicator.ReceivePacket(out packet);
switch (result)
{
case PacketCommunicatorReceiveResult.Timeout:
continue;
case PacketCommunicatorReceiveResult.Ok:
if (packet.Buffer != null && packet.Length > 0)
{
chatPacket = DsoChatPacket.Parse(packet.Buffer);
if (chatPacket == null || chatPacket.Messages.Count == 0)
{
// Failed to parse
mWorkingThread.ReportProgress(0);
}
else
{
mWorkingThread.ReportProgress(0, chatPacket.Clone());
}
}
break;
default:
throw new InvalidOperationException("The result " + result + " should never be reached here");
}
} while (true);
// Set result object to handle "Cancel" correctly
e.Result = true;
}
// Callback function invoked by Pcap.Net for every incoming packet
private void PacketHandler(Packet packet)
{
if (!BackgroundWorker1.CancellationPending == true)
{
try
{
this.Invoke(new MethodInvoker(() => pbarProgressBar1.Visible = true));
if (packet.Ethernet.IpV4.Tcp.Payload != null)
{
Match match;
string text = Encoding.ASCII.GetString(packet.Ethernet.IpV4.Tcp.Payload.ToMemoryStream().ToArray());
if (Properties.Settings.Default.filterOnSensorId.ToString().Length > 0)
{
match = Regex.Match(text.ToLower(), "sensor=" + Properties.Settings.Default.filterOnSensorId.ToString() + "|mt=pressure", RegexOptions.Singleline);
}
else if (Properties.Settings.Default.sensorType.ToString().Length > 0)
{
match = Regex.Match(text.ToLower(), "mt=" + Properties.Settings.Default.sensorType.ToString() + "|mt=pressure", RegexOptions.Singleline);
}
else
{
match = Regex.Match(text.ToLower(), "mt=", RegexOptions.Singleline);
}
string[] bridgeDataArray;
double pressureOffset = Properties.Settings.Default.pressureOffset;
if (match.Success)
{
this.Invoke(new MethodInvoker(() => pbarProgressBar1.Value = progressBarValue(10)));
this.Invoke(new MethodInvoker(() => txtOutput.Text = txtOutput.Text.Replace(waitMessage, "")));
bridgeDataArray = text.Split('&');
if (text.IndexOf("mt=" + Properties.Settings.Default.sensorType.ToString(), StringComparison.CurrentCultureIgnoreCase) == -1)
{
noSensorDataIterations += 1;
}
else
{
noSensorDataIterations = 0;
}
foreach (string element in bridgeDataArray)
{
if (element.IndexOf("sensor=") == 0)
{
sensorId = element.Substring(7, 5);
}
if (element.IndexOf("mt=") == 0)
{
sensorType = element.Substring(3).ToLower();
}
if (Properties.Settings.Default.filterOnSensorId.ToString().Length == 0 || sensorId == Properties.Settings.Default.filterOnSensorId.ToString())
{
if (element.IndexOf("winddir=") == 0 &&
(Properties.Settings.Default.sensorTypeWind == "" || sensorType.IndexOf(Properties.Settings.Default.sensorTypeWind) != -1) &&
(Properties.Settings.Default.sensorIdWind == "" || sensorId.IndexOf(Properties.Settings.Default.sensorIdWind) != -1))
{
windDirHex = element.Substring(8, 1);
switch (windDirHex)
{
case "5":
windDegrees = 0;
break;
case "7":
windDegrees = 22.5;
break;
case "3":
windDegrees = 45;
break;
case "1":
windDegrees = 67.5;
break;
case "9":
windDegrees = 90;
break;
case "B":
windDegrees = 112.5;
break;
case "F":
windDegrees = 135;
break;
case "D":
windDegrees = 157.5;
break;
case "C":
windDegrees = 180;
break;
case "E":
windDegrees = 202.5;
break;
case "A":
windDegrees = 225;
break;
case "8":
windDegrees = 247.5;
break;
case "0":
windDegrees = 270;
break;
case "2":
windDegrees = 292.5;
break;
case "6":
windDegrees = 315;
break;
case "4":
windDegrees = 337.5;
break;
}
}
if (element.IndexOf("windspeed=") == 0 &&
(Properties.Settings.Default.sensorTypeWind == "" || sensorType.IndexOf(Properties.Settings.Default.sensorTypeWind) != -1) &&
(Properties.Settings.Default.sensorIdWind == "" || sensorId.IndexOf(Properties.Settings.Default.sensorIdWind) != -1))
{
windspeed = Math.Round(double.Parse(element.Substring(11, 5)) / 44.70400004, 1);
dtWindData.Rows.Add(new object[] {
DateTime.Now,
windspeed
});
windGust = calcWindGust(windspeed);
}
if (element.IndexOf("temperature=") == 0 &&
(Properties.Settings.Default.sensorTypeTemp == "" || sensorType.IndexOf(Properties.Settings.Default.sensorTypeTemp) != -1) &&
(Properties.Settings.Default.sensorIdTemp == "" || sensorId.IndexOf(Properties.Settings.Default.sensorIdTemp) != -1))
{
if (element.Substring(13, 1) == "-")
{
temperature = Math.Round(double.Parse(element.Substring(14, 4)) * -1 / 100 * 9 / 5 + 32, 1);
}
else
{
temperature = Math.Round(double.Parse(element.Substring(14, 4)) / 100 * 9 / 5 + 32, 1);
}
}
if (element.IndexOf("humidity=") == 0 &&
(Properties.Settings.Default.sensorTypeHumidity == "" || sensorType.IndexOf(Properties.Settings.Default.sensorTypeHumidity) != -1) &&
(Properties.Settings.Default.sensorIdHumidity == "" || sensorId.IndexOf(Properties.Settings.Default.sensorIdHumidity) != -1))
{
humidity = double.Parse(element.Substring(11, 3)) / 10;
}
if (element.IndexOf("rainfall=") == 0 &&
(Properties.Settings.Default.sensorTypeRain == "" || sensorType.IndexOf(Properties.Settings.Default.sensorTypeRain) != -1) &&
(Properties.Settings.Default.sensorIdRain == "" || sensorId.IndexOf(Properties.Settings.Default.sensorIdRain) != -1))
{
currRain = Math.Round(double.Parse(element.Substring(10, 6)) / 2540, 3);
if (currRain > 0)
{
cumulRainDay += currRain;
cumulRainNoReset += currRain;
}
dtRainData.Rows.Add(new object[] { DateTime.Now, currRain });
rainHour = rainLast60Minutes(currRain);
}
if (element.IndexOf("rssi=") == 0)
{
signal = int.Parse(element.Substring(5, 1));
}
if (element.IndexOf("battery=") == 0)
{
battery = element.Substring(8);
}
}
// Get and process pressure data
if (element.IndexOf("C1=") == 0)
{
c1 = Int32.Parse(element.Substring(3, 4), NumberStyles.HexNumber);
}
if (element.IndexOf("C2=") == 0)
{
c2 = Int32.Parse(element.Substring(3, 4), NumberStyles.HexNumber);
}
if (element.IndexOf("C3=") == 0)
{
c3 = Int32.Parse(element.Substring(3, 4), NumberStyles.HexNumber);
}
if (element.IndexOf("C4=") == 0)
{
c4 = Int32.Parse(element.Substring(3, 4), NumberStyles.HexNumber);
}
if (element.IndexOf("C5=") == 0)
{
c5 = Int32.Parse(element.Substring(3, 4), NumberStyles.HexNumber);
}
if (element.IndexOf("C6=") == 0)
{
c6 = Int32.Parse(element.Substring(3, 4), NumberStyles.HexNumber);
}
if (element.IndexOf("C7=") == 0)
{
c7 = Int32.Parse(element.Substring(3, 4), NumberStyles.HexNumber);
}
if (element.IndexOf("A=") == 0)
{
a = Int32.Parse(element.Substring(3), NumberStyles.HexNumber);
}
if (element.IndexOf("B=") == 0)
{
b = Int32.Parse(element.Substring(3), NumberStyles.HexNumber);
}
if (element.IndexOf("C=") == 0)
{
c = Int32.Parse(element.Substring(3), NumberStyles.HexNumber);
}
if (element.IndexOf("D=") == 0)
{
d = Int32.Parse(element.Substring(3), NumberStyles.HexNumber);
}
if (element.IndexOf("PR=") == 0)
{
pr = Int32.Parse(element.Substring(3, 4), NumberStyles.HexNumber);
}
if (element.IndexOf("TR=") == 0)
{
tr = Int32.Parse(element.Substring(3, 4), NumberStyles.HexNumber);
d1 = pr;
d2 = tr;
if (d2 >= c5)
{
dut = d2 - c5 - ((d2 - c5) / Math.Pow(2, 7)) * ((d2 - c5) / Math.Pow(2, 7)) * a / Math.Pow(2, c);
}
else
{
dut = d2 - c5 - ((d2 - c5) / Math.Pow(2, 7)) * ((d2 - c5) / Math.Pow(2, 7)) * b / Math.Pow(2, c);
}
off = (c2 + (c4 - 1024) * dut / Math.Pow(2, 14)) * 4;
sens = c1 + c3 * dut / Math.Pow(2, 10);
x = sens * (d1 - 7168) / Math.Pow(2, 14) - off;
p = x * 10 / Math.Pow(2, 5) + c7;
t = 250 + dut * c6 / Math.Pow(2, 16) - dut / Math.Pow(2, d);
pressure = Math.Round(p / 338.6 + pressureOffset, 2);
}
if (humidity > 0)
{
dewpoint = ((((temperature - 32) / 1.8) - (14.55 + 0.114 * ((temperature - 32) / 1.8)) * (1 - (0.01 * humidity)) - Math.Pow(((2.5 + 0.007 *
((temperature - 32) / 1.8)) * (1 - (0.01 * humidity))), 3) - (15.9 + 0.117 * ((temperature - 32) / 1.8)) *
Math.Pow((1 - (0.01 * humidity)), 14)) * 1.8) + 32;
dewpoint = Math.Round(dewpoint, 1);
}
}
if (txtOutput.Text.Length > 50000)
{
this.Invoke(new MethodInvoker(() => string.IsNullOrEmpty(txtOutput.Text)));
}
string wuResponse = null;
string wBugResponse = null;
string pwsResponse = null;
string aWeatherResponse = null;
if (pressure > 0 & (humidity > 0 || Properties.Settings.Default.filterOnSensorId.ToString() == "water" && temperature > 0) & noSensorDataIterations < 5)
{
if (Properties.Settings.Default.postToWunderground == true)
{
string wundergroundUpdateString = "http://rtupdate.wunderground.com/weatherstation/updateweatherstation.php?ID=" + Properties.Settings.Default.wuStation +
"&PASSWORD="******"&dateutc=" +
System.Uri.EscapeUriString(Convert.ToString(DateTime.Now.ToUniversalTime())) + "&winddir=" + windDegrees + "&windspeedmph=" + windspeed + "&tempf=" +
temperature + "&rainin=" + rainHour + "&dailyrainin=" + cumulRainDay + "&baromin=" + pressure + "&dewptf=" + dewpoint + "&humidity=" + humidity +
"&softwaretype=" + "Kevins%20Acu-Rapid%201217&action=updateraw&realtime=1&rtfreq=15" + "&windgustmph=" + windGust /*+ "&indoortempf=" + temperature +
* "&soiltempf=" + temperature*/;
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(wundergroundUpdateString);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream receiveStream = response.GetResponseStream();
StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);
wuResponse = readStream.ReadToEnd();
readStream.Close();
response.Close();
if (wuResponse.IndexOf("success") != -1)
{
wuResponse = "ok";
}
}
catch (Exception ex)
{
wuResponse = "";
this.Invoke(new MethodInvoker(() => txtOutput.Text = DateTime.Now + "\t" + "ERROR posting data to Weather Underground. " + ex.Message +
System.Environment.NewLine + txtOutput.Text));
}
}
else
{
wuResponse = "off";
}
if (Properties.Settings.Default.postToWeatherBug == true)
{
string weatherBugUpdateString = "http://data.backyard2.weatherbug.com/data/livedata.aspx?ID=" + Properties.Settings.Default.wbPub + "&Key=" +
Properties.Settings.Default.wbPwd + "&num=" + Properties.Settings.Default.wbStation + "&dateutc=" +
System.Uri.EscapeUriString(Convert.ToString(DateTime.Now.ToUniversalTime())) + "&winddir=" + windDegrees + "&windspeedmph=" + windspeed +
"&windgustmph=" + windGust + "&tempf=" + temperature + "&rainin=" + rainHour + "&dailyrainin=" + cumulRainDay + "&baromin=" + pressure +
"&dewptf=" + dewpoint + "&humidity=" + humidity + "&softwaretype=Kevin%27s%20Acu-Link";
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(weatherBugUpdateString);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream receiveStream = response.GetResponseStream();
StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);
wBugResponse = readStream.ReadToEnd();
readStream.Close();
response.Close();
if (wBugResponse == "Successfully Received QueryString Data")
{
wBugResponse = "ok";
}
}
catch (Exception ex)
{
wBugResponse = "";
this.Invoke(new MethodInvoker(() => txtOutput.Text = DateTime.Now + "\t" + "ERROR posting data to Weatherbug. " + ex.Message +
System.Environment.NewLine + txtOutput.Text));
}
}
else
{
wBugResponse = "off";
}
if (Properties.Settings.Default.postToPws == true)
{
string pwsUpdateString = "http://www.pwsweather.com/pwsupdate/pwsupdate.php?ID=" + Properties.Settings.Default.pwsStation + "&PASSWORD="******"&dateutc=" +
DateTime.Now.ToUniversalTime().ToString("yyyy-MM-dd+HH\\%3Amm\\%3Ass") + "&winddir=" + windDegrees + "&windspeedmph=" + windspeed +
"&windgustmph=" + windGust + "&tempf=" + temperature + "&rainin=" + rainHour + "&dailyrainin=" + cumulRainDay + "&baromin=" + pressure +
"&dewptf=" + dewpoint + "&humidity=" + humidity + "&action=updateraw";
//this.Invoke(new MethodInvoker(() => txtOutput.Text = DateTime.Now + "\t" + pwsUpdateString +
// System.Environment.NewLine + txtOutput.Text));
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(pwsUpdateString);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream receiveStream = response.GetResponseStream();
StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);
pwsResponse = readStream.ReadToEnd();
readStream.Close();
response.Close();
if (pwsResponse.IndexOf("Data Logged and posted in METAR mirror") >= 0)
{
pwsResponse = "ok";
}
}
catch (Exception ex)
{
pwsResponse = "";
this.Invoke(new MethodInvoker(() => txtOutput.Text = DateTime.Now + "\t" + "ERROR posting data to PWSweather. " + ex.Message +
System.Environment.NewLine + txtOutput.Text));
}
}
else
{
pwsResponse = "off";
}
if (Properties.Settings.Default.postToAWeather == true)
{
if (skipUpdateCount == 0 || skipUpdateCount >= skipUpdateInterval)
{
skipUpdateCount = 0;
string aWeatherUpdateString = "http://www.anythingweather.com/feeds/load/WXDATAPOST.ASP?username="******"&password="******"&version=1&WXData=" +
DateTime.Now.ToString("yyyy\\%2DMM\\%2Ddd+HH:mm:ss") + "%2C" + temperature + "%2C" + dewpoint + "%2C" +
humidity + "%2C" + pressure + "%2C" + windDegrees + "%2C" + windspeed + "%2C" + cumulRainDay + "%2C%2C%2C" + windGust +
"%2C%0D";
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(aWeatherUpdateString);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream receiveStream = response.GetResponseStream();
StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);
aWeatherResponse = readStream.ReadToEnd();
readStream.Close();
response.Close();
if (aWeatherResponse == "")
{
aWeatherResponse = "ok";
//aWeatherResponse = aWeatherUpdateString;
}
}
catch (Exception ex)
{
aWeatherResponse = "";
this.Invoke(new MethodInvoker(() => txtOutput.Text = DateTime.Now + "\t" + "ERROR posting data to Anything Weather. " + ex.Message +
System.Environment.NewLine + txtOutput.Text));
}
}
else
{
aWeatherResponse = "wait " + skipUpdateCount.ToString();
}
}
else
{
aWeatherResponse = "off";
}
skipUpdateCount += 1;
if (Properties.Settings.Default.writeToCSV == true)
{
string newFileName;
if (Properties.Settings.Default.csvFilePath == "")
{
newFileName = "weather.csv";
}
else
{
newFileName = Properties.Settings.Default.csvFilePath;
}
string weatherData = DateTime.Now + "," + temperature + "," + humidity + "," + windspeed + "," + windGust + "," + windDegrees + "," +
pressure + "," + rainHour + "," + cumulRainDay + "," + dewpoint + Environment.NewLine;
if (!File.Exists(newFileName))
{
string fileHeader = "Local Time" + "," + "Temperature" + "," + "Humidity" + "," + "Wind MPH" + "," + "Wind Gust" + "," + "Wind Dir" + "," +
"Pressure" + "," + "Rain Hour" + "," + "Rain Day" + "," + "Dewpoint" + Environment.NewLine;
File.WriteAllText(newFileName, fileHeader);
}
File.AppendAllText(newFileName, weatherData);
}
}
else
{
wuResponse = "Need more data";
wBugResponse = "Need more data";
pwsResponse = "Need more data";
aWeatherResponse = "Need more data";
}
this.Invoke(new MethodInvoker(() => txtOutput.Text = DateTime.Now + " " + "T:" + temperature.ToString("F1") + " " + "H:" + humidity + " " + "W:" +
windDegrees + "\t" + "WS:" + windspeed.ToString("F1") + "\t" + "Gust:" + windGust.ToString("F1") + "\t" + "RDAY:" + cumulRainDay.ToString("F2") +
" " + "RHR:" + rainHour.ToString("F2") + " " + "BAR:" + pressure.ToString("F2") + " " + "DEW:" + dewpoint.ToString("F1") + " " + "SI: " + sensorId +
" ST: " + sensorType + " " + "WU: " + wuResponse + " " + "WB: " + wBugResponse + " " + "PWS: " + pwsResponse + " " + "AW: " + aWeatherResponse +
System.Environment.NewLine + txtOutput.Text));
this.Invoke(new MethodInvoker(() => txtBattery.Text = battery));
if (battery == "normal")
{
this.Invoke(new MethodInvoker(() => txtBattery.BackColor = Control.DefaultBackColor));
}
else
{
this.Invoke(new MethodInvoker(() => txtBattery.BackColor = Color.FromArgb(247, 247, 124)));
}
this.Invoke(new MethodInvoker(() => txtSignal.Text = signal.ToString()));
switch (signal)
{
case 0:
this.Invoke(new MethodInvoker(() => txtSignal.BackColor = Color.Red));
break;
case 1:
this.Invoke(new MethodInvoker(() => txtSignal.BackColor = Color.FromArgb(247, 247, 124)));
break;
case 2:
case 3:
case 4:
this.Invoke(new MethodInvoker(() => txtSignal.BackColor = Control.DefaultBackColor));
break;
}
this.Invoke(new MethodInvoker(() => txtLastUpdated.Text = DateTime.Now.ToString()));
if (DateTime.Now.Day != previousDay)
{
cumulRainDay = 0;
}
previousDay = DateTime.Now.Day;
previousRainReading = currRain;
if (noSensorDataIterations >= 5)
{
this.Invoke(new MethodInvoker(() => txtOutput.Text = DateTime.Now + "\t" + "INFO: Not receiving data from sensor. Low batteries? Too far away?" +
System.Environment.NewLine + txtOutput.Text));
battery = "unknown";
signal = 0;
signalFails += 1;
}
this.Invoke(new MethodInvoker(() => txtSignalFails.Text = signalFails.ToString()));
}
}
}
catch (NullReferenceException ex)
{
//Keep going
}
catch (Exception ex)
{
this.Invoke(new MethodInvoker(() => txtOutput.Text = "ERROR: " + ex.Message + " " + ex.Source + System.Environment.NewLine + txtOutput.Text));
}
}
else
{
communicator.Break();
BackgroundWorker1.CancelAsync();
BackgroundWorker1.Dispose();
}
}
