private void Send()
{
while (true)
{
string input = TXData.Take();
if (input == "")
{
continue;
}
var Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
var MD5Sum = BitConverter.ToString(sha256Ctx.ComputeHash(System.Text.Encoding.Default.GetBytes(input + rand.Next(0, 65536).ToString()))).Replace("-", "");
Stack <string> PiecedMsg = new Stack <string>();
while (input.Length > 0)
{
if (input.Length <= 5)
{
PiecedMsg.Push(input);
input = "";
}
else
{
var cutlen = rand.Next(0, input.Length);
PiecedMsg.Push(input.Substring(0, cutlen));
input = input.Substring(cutlen);
}
}
var PacketTotal = PiecedMsg.Count;
while (PiecedMsg.Count > 0)
{
IPAddress SrcIP, DstIP;
switch (rand.Next(0, 2))
{
case 0:
if (IPv6SrcList.Count != 0 && IPv6DstList.Count != 0)
{
DstIP = IPv6DstList[rand.Next(0, IPv6DstList.Count)];
SrcIP = IPv6SrcList[rand.Next(0, IPv6SrcList.Count)];
}
else
{
DstIP = IPv4DstList[rand.Next(0, IPv4DstList.Count)];
SrcIP = IPv4SrcList[rand.Next(0, IPv4SrcList.Count)];
}
break;
default:
if (IPv4SrcList.Count != 0 && IPv4DstList.Count != 0)
{
DstIP = IPv4DstList[rand.Next(0, IPv4DstList.Count)];
SrcIP = IPv4SrcList[rand.Next(0, IPv4SrcList.Count)];
}
else
{
DstIP = IPv6DstList[rand.Next(0, IPv6DstList.Count)];
SrcIP = IPv6SrcList[rand.Next(0, IPv6SrcList.Count)];
}
break;
}
var TXProtocolPacket = new ProtocolPacket {
PacketTimestamp = Timestamp, PacketTotal = PacketTotal, PacketMD5Sum = MD5Sum, PacketCount = PiecedMsg.Count, SrcIP = SrcIP.ToString(), DstIP = DstIP.ToString()
};
TXProtocolPacket.PiecedMsg = PiecedMsg.Pop();
var udpPacket = new PacketDotNet.UdpPacket((ushort)rand.Next(1, 65536), (ushort)rand.Next(1, 65536));
long nonceTime = (DateTimeOffset.Now.ToUnixTimeSeconds() / 300) * 300;
byte[] nonce = sha256Ctx.ComputeHash(System.Text.Encoding.Default.GetBytes(nonceTime.ToString())).Take(8).ToArray();
var NSecKey = Key.Import(AeadAlgorithm.ChaCha20Poly1305, key, KeyBlobFormat.RawSymmetricKey);
var NSecNonce = new Nonce(nonce, 4);
udpPacket.PayloadData = AeadAlgorithm.ChaCha20Poly1305.Encrypt(NSecKey, NSecNonce, null, Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(TXProtocolPacket)));
if (DstIP.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
var ipv4Packet = new PacketDotNet.IPv4Packet(SrcIP, DstIP);
ipv4Packet.PayloadPacket = udpPacket;
udpPacket.UpdateCalculatedValues();
udpPacket.UpdateUDPChecksum();
ipv4Packet.UpdateCalculatedValues();
txBuffer.Add(new DivertPacket {
Addr = new WINDIVERT_ADDRESS {
Direction = 0
}, Data = ipv4Packet.Bytes
});
}
if (DstIP.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
{
var ipv6Packet = new PacketDotNet.IPv6Packet(SrcIP, DstIP);
ipv6Packet.NextHeader = PacketDotNet.IPProtocolType.UDP;
ipv6Packet.PayloadPacket = udpPacket;
udpPacket.UpdateCalculatedValues();
udpPacket.UpdateUDPChecksum();
ipv6Packet.UpdateCalculatedValues();
txBuffer.Add(new DivertPacket {
Addr = new WINDIVERT_ADDRESS {
Direction = 0
}, Data = ipv6Packet.Bytes
});
}
}
}
}
public static void GenerateDataGridViewRow(SharpPcap.CaptureEventArgs e)
{
PacketDotNet.Packet p;
PacketDotNet.InternetLinkLayerPacket iLinkLayerPacket = null;
String row_SourceAddress = "";
String row_DestinationAddress = "";
String row_Protocol = "";
Int32 row_PacketLength = 0;
DataGridViewCellStyle row_cellStyle = new DataGridViewCellStyle();
String row_Time;
// Compute the time of packet arrival
TimeSpan timeInterval;
timeInterval = (e.Packet.Timeval.Date.ToLocalTime() - CaptureStatistic.StartOfCapture);
row_Time = timeInterval.Minutes.ToString() + ":" + timeInterval.Seconds.ToString() + "::" + timeInterval.Milliseconds.ToString();
row_cellStyle.BackColor = Color.White;
// Get PacketDotNet.Packet object
p = PacketDotNet.Packet.ParsePacket(e.Packet.LinkLayerType, e.Packet.Data);
CaptureStatistic.NumberOfCapturedPackets++;
switch (e.Packet.LinkLayerType)
{
case PacketDotNet.LinkLayers.Ethernet:
#region Parse Ethernet Packets
PacketDotNet.EthernetPacket etherPacket = PacketDotNet.EthernetPacket.GetEncapsulated(p);
iLinkLayerPacket = etherPacket;
// Get Some Ethernet Packet's fields
row_PacketLength = etherPacket.Bytes.Length;
switch (etherPacket.Type)
{
case PacketDotNet.EthernetPacketType.IpV4:
CaptureStatistic.CapturedIpV4++;
PacketDotNet.IPv4Packet ipv4Packet = (PacketDotNet.IPv4Packet)PacketDotNet.IPv4Packet.GetEncapsulated(etherPacket);
row_SourceAddress = ipv4Packet.SourceAddress.ToString();
row_DestinationAddress = ipv4Packet.DestinationAddress.ToString();
row_Protocol = "IPv4/" + ipv4Packet.Protocol.ToString();
switch (ipv4Packet.Protocol)
{
case PacketDotNet.IPProtocolType.TCP:
CaptureStatistic.CapturedTcpV4++;
row_cellStyle = ProtocolColor.TCP;
break;
case PacketDotNet.IPProtocolType.UDP:
CaptureStatistic.CapturedUdpV4++;
row_cellStyle = ProtocolColor.UDP;
break;
case PacketDotNet.IPProtocolType.GRE:
CaptureStatistic.CapturedGre++;
row_cellStyle = ProtocolColor.GRE;
break;
case PacketDotNet.IPProtocolType.ICMP:
CaptureStatistic.CapturedIcmpV4++;
row_cellStyle = ProtocolColor.ICMP;
break;
case PacketDotNet.IPProtocolType.IGMP:
CaptureStatistic.CapturedIgmp++;
row_cellStyle = ProtocolColor.IGMP;
break;
}
break;
case PacketDotNet.EthernetPacketType.IpV6:
CaptureStatistic.CapturedIpV6++;
PacketDotNet.IPv6Packet ipv6Packet = (PacketDotNet.IPv6Packet)PacketDotNet.IPv6Packet.GetEncapsulated(etherPacket);
row_SourceAddress = ipv6Packet.SourceAddress.ToString();
row_DestinationAddress = ipv6Packet.DestinationAddress.ToString();
row_Protocol = "IPv6/" + ipv6Packet.NextHeader.ToString();
switch (ipv6Packet.NextHeader)
{
case PacketDotNet.IPProtocolType.GRE:
CaptureStatistic.CapturedGre++;
break;
case PacketDotNet.IPProtocolType.ICMP:
CaptureStatistic.CapturedIcmpV4++;
break;
case PacketDotNet.IPProtocolType.ICMPV6:
CaptureStatistic.CapturedIcmpV6++;
break;
case PacketDotNet.IPProtocolType.IGMP:
CaptureStatistic.CapturedIgmp++;
break;
case PacketDotNet.IPProtocolType.TCP:
CaptureStatistic.CapturedTcpV6++;
break;
case PacketDotNet.IPProtocolType.UDP:
CaptureStatistic.CapturedUdpV6++;
break;
default:
break;
}
break;
case PacketDotNet.EthernetPacketType.Arp:
CaptureStatistic.CapturedArp++;
row_Protocol = "ARP";
row_SourceAddress = etherPacket.SourceHwAddress.ToString();
row_DestinationAddress = "Broadcast";
row_cellStyle = ProtocolColor.ARP;
break;
default:
row_Protocol = etherPacket.Type.ToString();
break;
}
#endregion
break;
}
// Add packet to the DataGridVeiw
DataGridViewRow newRow = (DataGridViewRow)MainFormDataGridView.RowTemplate.Clone();
newRow.CreateCells(MainFormDataGridView);
newRow.Tag = iLinkLayerPacket;
newRow.SetValues(CaptureStatistic.NumberOfCapturedPackets, row_Time, row_SourceAddress,
row_DestinationAddress, row_Protocol, row_PacketLength);
foreach (DataGridViewCell cell in newRow.Cells)
cell.Style = row_cellStyle;
MainFormDataGridView.Rows.Add(newRow);
}
