private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
int index = comboBox1.SelectedIndex;
dev = devices[index];
this.propertyGrid1.SelectedObject = (dev as NetworkDevice);
}
/// <summary>
/// 使用函数构造UDP数据包
/// </summary>
/// <param name="device"></param>
/// <param name="dst_mac"></param>
/// <param name="dst_ip"></param>
/// <param name="src_port"></param>
/// <param name="dst_port"></param>
/// <param name="send_data"></param>
/// <returns></returns>
private byte[] GenUDPPacket(PcapDevice device, PhysicalAddress dst_mac, IPAddress dst_ip, int src_port,
int dst_port, string send_data)
{
// 构造UDP部分数据报
UdpPacket udp_pkg = new UdpPacket((ushort)src_port, (ushort)dst_port);
udp_pkg.PayloadData = strToToHexByte(send_data);
udp_pkg.UpdateCalculatedValues();
// 构造IP部分数据报
IPv4Packet ip_pkg = new IPv4Packet(device.Interface.Addresses[1].Addr.ipAddress, dst_ip);
ip_pkg.Protocol = IPProtocolType.UDP;
ip_pkg.Version = IpVersion.IPv4;
ip_pkg.PayloadData = udp_pkg.Bytes;
ip_pkg.TimeToLive = 10;
ip_pkg.UpdateCalculatedValues();
ip_pkg.UpdateIPChecksum();
// 构造以太网帧
EthernetPacket net_pkg = new EthernetPacket(device.MacAddress, dst_mac, EthernetPacketType.IpV4);
net_pkg.Type = EthernetPacketType.IpV4;
net_pkg.PayloadData = ip_pkg.Bytes;
net_pkg.UpdateCalculatedValues();
return(net_pkg.Bytes);
}
public void SetDevice(PcapDevice dev)
{
lock (_lock)
{
_device = dev;
}
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
var index = this.comboBox1.SelectedIndex;
this.dev = this.devices[index];
this.propertyGrid1.SelectedObject = this.dev as NetworkDevice;
}
public static IPAddressInfo GetIPAddressInfo(PcapDevice device)
{
PcapAddress pcap_address = null;
pcap_address = device.Interface.Addresses
.Where(a => a.Addr.type == Sockaddr.AddressTypes.AF_INET_AF_INET6 &&
a.Addr.ipAddress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
.FirstOrDefault();
if (pcap_address == null)
{
throw new InvalidOperationException("IP address not found");
}
IPAddressInfo ipaddressinfo = new IPAddressInfo
{
IPAddress = pcap_address.Addr.ipAddress,
Mask = pcap_address.Netmask.ipAddress,
Gateway = device.Interface.GatewayAddresses?.FirstOrDefault()
};
ipaddressinfo.IPNetwork = GetNetworkAddress(ipaddressinfo.Mask, ipaddressinfo.IPAddress);
ipaddressinfo.IPBroadcast = GetBroadcastAddress(ipaddressinfo.Mask, ipaddressinfo.IPAddress);
return(ipaddressinfo);
}
public void StopCapture()
{
lock (_lock)
{
if (!IsCapturing)
{
return;
}
//if device exists and opened - close it
if (_device != null && _device.PcapOpened)
{
_device.PcapClose();
}
IsCapturing = false;
_device = null;
DeviceName = null;
try
{
_runningThread.Abort();
}
finally
{
_runningThread = null;
}
}
}
private void MainForm_Load(object pSender, EventArgs pArgs)
{
if (new SetupForm().ShowDialog(this) != DialogResult.OK)
{
Close(); return;
}
foreach (PcapDevice device in new PcapDeviceList())
{
if (device.Interface.FriendlyName == Config.Instance.Interface)
{
mDevice = device;
break;
}
}
mDevice.Open(true, 1);
mDevice.SetFilter(string.Format("tcp portrange {0}-{1}", Config.Instance.LowPort, Config.Instance.HighPort));
mTimer.Enabled = true;
mSearchForm.Show(mDockPanel);
mDataForm.Show(mDockPanel);
mStructureForm.Show(mDockPanel);
mPropertyForm.Show(mDockPanel);
DockPane rightPane1 = new DockPane(mStructureForm, DockState.DockRight, true);
DockPane rightPane2 = new DockPane(mPropertyForm, DockState.DockRight, true);
rightPane1.Show();
rightPane2.Show();
}
private void button1_Click(object sender, EventArgs e)
{
textBox4.Clear();
button1.Enabled = false;
try
{
_scannerType = comboBox1.SelectedItem.ToString();
_scanMethod = comboBox2.SelectedItem.ToString();
portFrom = Convert.ToInt32(textBox1.Text);
if (textBox2.Enabled)
{
portTo = Convert.ToInt32(textBox2.Text);
}
dev = (PcapDevice)comboBox3.SelectedItem;
//Matching selected interface with .NET's facilities in order to get gateway's ip address
//that is a property of the network interface of interest.
foreach (NetworkInterface f in NetworkInterface.GetAllNetworkInterfaces())
{
if (dev.Interface.Name.Contains(f.Id))
{
gateway = f.GetIPProperties().GatewayAddresses[0].Address;
break;
}
}
backgroundWorker1.RunWorkerAsync();
}
catch (Exception ex)
{
textBox4.Text = "You have to insert all appropriate parameters.\n";
textBox4.Text = ex.Message;
button1.Enabled = true;
}
}
private void mFileCaptureMenu_Click(object pSender, EventArgs pArgs)
{
if (mCaptureDevice != null)
{
mCaptureDevice.Close();
mCaptureDevice = null;
return;
}
SetupForm frmSetup = new SetupForm();
if (frmSetup.ShowDialog(this) != DialogResult.OK)
{
return;
}
foreach (PcapDevice device in new PcapDeviceList())
{
if (device.Interface.FriendlyName == Config.Instance.Interface)
{
mCaptureDevice = device;
break;
}
}
mCaptureDevice.Open(true, 1);
mCaptureDevice.SetFilter(string.Format("tcp portrange {0}-{1}", Config.Instance.LowPort, Config.Instance.HighPort));
}
public ChooseDeviceForm(PcapDevice device)
{
InitializeComponent();
nics = NetworkInterface.GetAllNetworkInterfaces();
FillComboBoxDevices();
comboBoxDevices.SelectedIndexChanged += new EventHandler(comboBoxDevices_SelectedIndexChanged);
if (comboBoxDevices.Items.Count > 0)
{
comboBoxDevices.SelectedItem = device;
if (device != null)
{
buttonStart.Enabled = !device.Started;
buttonStop.Enabled = device.Started;
}
else
{
buttonStart.Enabled = false;
buttonStop.Enabled = false;
}
}
else
{
buttonStart.Enabled = false;
buttonStop.Enabled = false;
}
}
public PcapDevice GetActualDevice(string interfaceFriendlyName)
{
List <PcapDevice> allDevices = GetCurrentDevices();
PcapDevice result = allDevices.FirstOrDefault(newDevice => newDevice.Interface.FriendlyName == interfaceFriendlyName);
return(result);
}
private void StopCapture(object state)
{
PcapDevice dev = (PcapDevice)state;
dev.PcapStopCapture();
dev.PcapClose();
dev.PcapDumpFlush();
dev.PcapDumpClose();
}
public void SwitchDevice(PcapDevice device)
{
if (IsActive)
{
Stop();
}
_device = device;
}
public void FilterMethods()
{
using var device = TestHelper.GetPcapDevice();
device.Open();
var filterExpression = "arp";
var mask = (uint)0;
var result = PcapDevice.CompileFilter(device.PcapHandle, filterExpression, mask, out IntPtr bpfProgram, out string errorString);
Assert.IsTrue(result);
var arp = new ARP(device);
var destinationIP = new System.Net.IPAddress(new byte[] { 8, 8, 8, 8 });
// Note: We don't care about the success or failure here
arp.Resolve(destinationIP);
// retrieve some packets, looking for the arp
var header = IntPtr.Zero;
var data = IntPtr.Zero;
var foundBpfMatch = false;
var packetsToTry = 10;
var sw = System.Diagnostics.Stopwatch.StartNew();
while (packetsToTry > 0)
{
if (sw.ElapsedMilliseconds > 2000)
{
break;
}
var retval = device.GetNextPacketPointers(ref header, ref data);
if (retval == 1)
{
packetsToTry--;
Assert.AreNotEqual(IntPtr.Zero, header);
Assert.AreNotEqual(IntPtr.Zero, data);
// and test it against the bpf filter to confirm an exception is not thrown
Assert.DoesNotThrow(() =>
{
// we expect a match as we are sending an arp packet
if (PcapDevice.RunBpfProgram(bpfProgram, header, data))
{
foundBpfMatch = true;
}
}
);
}
}
Assert.IsTrue(foundBpfMatch);
PcapDevice.FreeBpfProgram(bpfProgram);
}
public void TestFilters()
{
// test a known failing filter
string errorString;
Assert.IsFalse(PcapDevice.CheckFilter("some bogus filter", out errorString));
// test a known working filter
Assert.IsTrue(PcapDevice.CheckFilter("port 23", out errorString));
}
// Disposer
public void Dispose()
{
if (trackdevice != null)
{
// Stop capturing packets
try { trackdevice.StopCapture(); } catch (Exception) { };
try { trackdevice.Close(); } catch (Exception) { };
trackdevice = null;
}
}
private void Start()
{
PcapDeviceList _PcapDeviceList = SharpPcap.GetAllDevices();
PcapDevice _PcapDevice = _PcapDeviceList[0];
_PcapDevice.PcapOnPacketArrival += new SharpPcap.PacketArrivalEvent(_PcapDevice_PcapOnPacketArrival);
_PcapDevice.PcapOpen(false);
_PcapDevice.PcapSetFilter("tcp and ip");
_PcapDevice.PcapCapture(-1);
}
private void mFileImportMenu_Click(object pSender, EventArgs pArgs)
{
if (mImportDialog.ShowDialog(this) != DialogResult.OK)
{
return;
}
device = new CaptureFileReaderDevice(mImportDialog.FileName);
device.Open();
new Thread(ParseImportedFile).Start();
}
private void buttonInject_Click(object sender, EventArgs e)
{
bool isEthernetHeaderCorrect =
ethernetHeaderUserControl.ValidateUserInput();
bool isIPv4HeaderCorrect =
iPv4HeaderUserControl.ValidateUserInput();
bool isTcpHeaderCorrect =
tcpHeaderUserControl.ValidateUserInput();
bool isDeviceChosen =
chooseDeviceUserControl.ValidateChosenDevice();
if (!isEthernetHeaderCorrect ||
!isIPv4HeaderCorrect ||
!isTcpHeaderCorrect ||
!isDeviceChosen)
{
return;
}
EthernetPacket ethernetHeader =
ethernetHeaderUserControl.CreateEthernetPacket(0);
IPv4Packet ipv4Packet =
iPv4HeaderUserControl.CreateIPv4Packet(ethernetHeader);
TCPPacket tcpPacket =
tcpHeaderUserControl.CreateTcpPacket(ipv4Packet);
PcapDevice device = chooseDeviceUserControl.Device;
bool isDeviceOpenedInThisForm = false;
try
{
if (!device.Opened)
{
device.Open();
isDeviceOpenedInThisForm = true;
}
// Send the packet out the network device
device.SendPacket(tcpPacket);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
if (isDeviceOpenedInThisForm)
{
device.Close();
}
}
}
/// <summary>
/// Dumps each received packet to a pcap file
/// </summary>
private static void device_PcapOnPacketArrival(object sender, PcapCaptureEventArgs e)
{
PcapDevice device = (PcapDevice)sender;
//if device has a dump file opened
if (device.DumpOpened)
{
//dump the packet to the file
device.Dump(e.Packet);
Console.WriteLine("Packet dumped to file.");
}
}
public bool TestDevice(PcapDevice device)
{
try
{
device.PcapOpen();
device.PcapClose();
return(true);
}
catch
{
return(false);
}
}
public static PhysicalAddress GetPhysicalAddress(PcapDevice device)
{
PhysicalAddress physicalAddress = null;
if (device.Interface.Addresses.Count > 0)
{
physicalAddress = device.Interface.Addresses
.Where(a => a.Addr.type == Sockaddr.AddressTypes.HARDWARE)
.Select(b => b.Addr.hardwareAddress).Single();
}
return(physicalAddress);
}
private void devicesToolStripMenuItem_Click(object sender, EventArgs e)
{
using (ChooseDeviceForm chooseDeviceForm = new ChooseDeviceForm(device))
{
chooseDeviceForm.ButtonStopPressed += new EventHandler(chooseDeviceForm_ButtonStopPressed);
if (chooseDeviceForm.ShowDialog() == DialogResult.OK)
{
device = chooseDeviceForm.Device;
StartCapture();
}
}
}
/// <summary>
/// The purpose of this method is to stop the sniffer.
/// </summary>
public void StopSniffing()
{
if (!started)
{
throw new Exception("Not Sniffing");
}
if (pcapDevice != null)
{
pcapDevice.PcapClose();
pcapDevice = null;
started = false;
}
}
/// <summary>
///
/// </summary>
/// <param name="adapter"></param>
/// <param name="payload"></param>
/// <returns></returns>
private bool SendRawPacket(NetworkInterface adapter, Packet payload)
{
Debug.WriteLine("Sending RAW packet", EventLogEntryType.Information);
PcapDevice device = (PcapDevice)CaptureDeviceList.Instance.Where(x => x.MacAddress.Equals(adapter.GetPhysicalAddress())).First();
if (device.Opened)
{
device.SendPacket(payload);
return(true);
}
return(false);
}
private string GetStatistics(PcapDevice device)
{
StringBuilder statBuilder = new StringBuilder();
statBuilder.Append("Pcap Statistics\n");
statBuilder.Append("=====================================\n");
statBuilder.AppendFormat(" Received Packets .............. : {0}\n",
device.Statistics().ReceivedPackets);
statBuilder.AppendFormat(" Dropped Packets ............... : {0}\n",
device.Statistics().DroppedPackets);
statBuilder.AppendFormat(" Interface Dropped Packets ..... : {0}\n",
device.Statistics().InterfaceDroppedPackets);
return(statBuilder.ToString());
}
private void buttonInject_Click(object sender, EventArgs e)
{
bool isEthernetHeaderCorrect =
ethernetHeaderUserControl.ValidateUserInput();
bool isPacketLengthValid = ValidatePacketLength();
bool isDeviceChosen =
chooseDeviceUserControl.ValidateChosenDevice();
if (!isEthernetHeaderCorrect ||
!isPacketLengthValid ||
!isDeviceChosen)
{
return;
}
int payloadLength = packetLength - EthernetFields_Fields.ETH_HEADER_LEN;
// Create an Ethernet packet.
EthernetPacket ethernetPacket =
ethernetHeaderUserControl.CreateEthernetPacket(payloadLength);
PcapDevice device = chooseDeviceUserControl.Device;
bool isDeviceOpenedInThisForm = false;
try
{
if (!device.Opened)
{
device.Open();
isDeviceOpenedInThisForm = true;
}
// Send the packet out the network device
device.SendPacket(ethernetPacket);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
if (isDeviceOpenedInThisForm)
{
device.Close();
}
}
}
/// <summary>
/// Stellt eine Klasse da die das Sniffen von Packets regelt
/// </summary>
/// <param name="port">Der Port auf den der TCPStreamAssembler horchen soll</param>
public L2NetSniffer(PcapDevice device, int dst_port)
{
this.dst_port = dst_port;
this.device = device;
/*
* (((ip.src == 192.168.100.150) && (tcp.dstport == 7777) ) || ((ip.src == 78.46.33.43) && (tcp.dstport == 52784)))
*/
this.tcpDumpFilter = "port " + dst_port;
this.clientStr = new L2NetStream();
this.serverStr = new L2NetStream();
// TODO: wenn keine devices gefunden wurden, Meldung
this.Init();
}
private void StopCapture(object state)
{
PcapDevice device = (PcapDevice)state;
device.StopCaptureTimeout = new TimeSpan(0, 0, 0, 0, 500);
try
{
device.StopCapture();
}
catch
{
Log.Warn("Terminals needed more than 500 milliseconds to abort the PCap thread.");
}
device.Close();
}
private static Dictionary <ComboBoxItem, ICaptureDevice> GetDevicesList()
{
var devices = CaptureDeviceList.Instance;
var dictionary = new Dictionary <ComboBoxItem, ICaptureDevice>();
foreach (var device in devices)
{
PcapDevice dev = (PcapDevice)device;
var item = new ComboBoxItem
{
Content = dev.Interface.FriendlyName
};
dictionary.Add(item, device);
}
return(dictionary);
}
public void Initialize()
{
pcapDevice = null;
started = false;
/* Retrieve the device list */
PcapDeviceList devices = SharpPcap.SharpPcap.GetAllDevices();
if( devices.Count < 1 )
{
return;
}
/* Scan the list printing every entry */
foreach( PcapDevice dev in devices )
{
if( dev.PcapIpAddress.Equals( ipAddress ) )
{
pcapDevice = dev;
break;
}
}
}
private void mFileImportMenu_Click(object pSender, EventArgs pArgs)
{
if (mImportDialog.ShowDialog(this) != DialogResult.OK) return;
device = new CaptureFileReaderDevice(mImportDialog.FileName);
device.Open();
new Thread(ParseImportedFile).Start();
}
private void MainForm_DragDrop(object sender, DragEventArgs e)
{
string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
foreach (var file in files)
{
if (!System.IO.File.Exists(file)) continue;
switch (System.IO.Path.GetExtension(file))
{
case ".msb":
{
SessionForm session = NewSession();
session.OpenReadOnly(file);
session.Show(mDockPanel, DockState.Document);
mSearchForm.RefreshOpcodes(false);
break;
}
case ".pcap":
{
device = new CaptureFileReaderDevice(file);
device.Open();
ParseImportedFile();
break;
}
}
}
}
/// <summary>
/// The purpose of this method is to stop the sniffer.
/// </summary>
public void StopSniffing()
{
if( !started )
{
throw new Exception( "Not Sniffing" );
}
if( pcapDevice != null )
{
pcapDevice.PcapClose();
pcapDevice = null;
started = false;
}
}
