/// <summary>
/// This method converts received data
/// to packets information
/// </summary>
/// <param name="buffer"></param>
/// <param name="iReceived"></param>
public void ConvertReceivedData(byte[] buffer, int iReceived)
{
_view.Invoke(() => _view.SetTotalPacketReceivedText(_decPackagesReceived.ToString()));
if (buffer.Length > 0 && iReceived != 0)
{
//getting IP header and data information
PacketIP ipPacket = new PacketIP(buffer, iReceived);
// this string used as a key in the buffer
string strKey = _decPackagesReceived.ToString(); // Guid.NewGuid().ToString();
//searching which uperlevel protocol contain IP packet
switch (ipPacket.Protocol)
{
case "TCP":
{
//if IP contains TCP creating new TCPData object
//and assigning all TCP fields
PacketTcp tcpPacket = new PacketTcp(ipPacket.Data, ipPacket.MessageLength);
//creating new PacketInfo object to fill the buffer
PacketInfo pkgInfo = new PacketInfo(ipPacket, tcpPacket);
//_pkgBuffer.Add(strKey, pkgInfo);
//creating new list item to fill the list view control
ListViewItem item = new ListViewItem(_decPackagesReceived.ToString());
item.SubItems.Add(DateTime.Now.ToString("HH:mm:ss:") + DateTime.Now.Millisecond.ToString());
item.SubItems.Add(ipPacket.SourceAddress.ToString());
item.SubItems.Add(tcpPacket.SourcePort);
item.SubItems.Add(ipPacket.DestinationAddress.ToString());
item.SubItems.Add(tcpPacket.DestinationPort);
item.SubItems.Add(ipPacket.Protocol);
item.SubItems.Add(ipPacket.TotalLength);
item.SubItems.Add(strKey);
// checking if current buffer size is larger then maximum allowed buffer size
//then removing item from top of the list view control and also removing
//the same item from buffer , then filling the list and buffer with new item
if (_pkgBuffer.Count == StartupInformation.PacketsToCapture && _view.ListReceivedPackets.Items.Count > 0)
{
_view.Invoke(() => _pkgBuffer.Remove(_view.ListReceivedPackets.Items[0].SubItems[8].Text));
_view.ListReceivedPackets.Invoke(RemoveFromList);
_pkgBuffer.Add(strKey, pkgInfo);
_view.ListReceivedPackets.Invoke(AddToList, new object[] { item });
}
else
{
_pkgBuffer.Add(strKey, pkgInfo);
_view.ListReceivedPackets.Invoke(AddToList, new object[] { item });
}
} break;
// see TCP
case "UDP":
{
PacketUdp udpPacket = new PacketUdp(ipPacket.Data, ipPacket.MessageLength);
PacketInfo pkgInfo = new PacketInfo(ipPacket, udpPacket);
//_pkgBuffer.Add(strKey, pkgInfo);
ListViewItem item = new ListViewItem(_decPackagesReceived.ToString());
item.SubItems.Add(DateTime.Now.ToString("HH:mm:ss:") + DateTime.Now.Millisecond.ToString());
item.SubItems.Add(ipPacket.SourceAddress.ToString());
item.SubItems.Add(udpPacket.SourcePort);
item.SubItems.Add(ipPacket.DestinationAddress.ToString());
item.SubItems.Add(udpPacket.DestinationPort);
item.SubItems.Add(ipPacket.Protocol);
item.SubItems.Add(ipPacket.TotalLength);
item.SubItems.Add(strKey);
if (_pkgBuffer.Count == StartupInformation.PacketsToCapture && _view.ListReceivedPackets.Items.Count > 0)
{
_view.Invoke(() => _pkgBuffer.Remove(_view.ListReceivedPackets.Items[0].SubItems[8].Text));
_view.ListReceivedPackets.Invoke(RemoveFromList);
_pkgBuffer.Add(strKey, pkgInfo);
_view.ListReceivedPackets.Invoke(AddToList, new object[] { item });
}
else
{
_pkgBuffer.Add(strKey, pkgInfo);
_view.ListReceivedPackets.Invoke(AddToList, new object[] { item });
}
} break;
//see TCP
case "ICMP":
{
PacketIcmp icmpPacket = new PacketIcmp(ipPacket.Data, ipPacket.MessageLength);
PacketInfo pkgInfo = new PacketInfo(ipPacket, icmpPacket);
//_pkgBuffer.Add(strKey, pkgInfo);
ListViewItem item = new ListViewItem(_decPackagesReceived.ToString());
item.SubItems.Add(DateTime.Now.ToString("HH:mm:ss:") + DateTime.Now.Millisecond.ToString());
item.SubItems.Add(ipPacket.SourceAddress.ToString());
item.SubItems.Add("0");
item.SubItems.Add(ipPacket.DestinationAddress.ToString());
item.SubItems.Add("0");
item.SubItems.Add(ipPacket.Protocol);
item.SubItems.Add(ipPacket.TotalLength);
item.SubItems.Add("N/A");
item.SubItems.Add(strKey);
if (_pkgBuffer.Count == StartupInformation.PacketsToCapture && _view.ListReceivedPackets.Items.Count > 0)
{
_view.Invoke(() => _pkgBuffer.Remove(_view.ListReceivedPackets.Items[0].SubItems[8].Text));
_view.ListReceivedPackets.Invoke(RemoveFromList);
_view.ListReceivedPackets.Invoke(AddToList, new object[] { item });
_pkgBuffer.Add(strKey, pkgInfo);
}
else
{
_view.ListReceivedPackets.Invoke(AddToList, new object[] { item });
_pkgBuffer.Add(strKey, pkgInfo);
}
} break;
case "IGMP":
{
PacketIgmp igmpPacket = new PacketIgmp(ipPacket.Data, ipPacket.MessageLength);
PacketInfo pkgInfo = new PacketInfo(ipPacket, igmpPacket);
//_pkgBuffer.Add(strKey, pkgInfo);
ListViewItem item = new ListViewItem(_decPackagesReceived.ToString());
item.SubItems.Add(DateTime.Now.ToString("HH:mm:ss:") + DateTime.Now.Millisecond.ToString());
item.SubItems.Add(ipPacket.SourceAddress.ToString());
item.SubItems.Add("0");
item.SubItems.Add(ipPacket.DestinationAddress.ToString());
item.SubItems.Add("0");
item.SubItems.Add(ipPacket.Protocol);
item.SubItems.Add(ipPacket.TotalLength);
item.SubItems.Add("N/A");
item.SubItems.Add(strKey);
if (_pkgBuffer.Count == StartupInformation.PacketsToCapture && _view.ListReceivedPackets.Items.Count > 0)
{
_view.Invoke(() => _pkgBuffer.Remove(_view.ListReceivedPackets.Items[0].SubItems[8].Text));
_view.ListReceivedPackets.Invoke(RemoveFromList);
_pkgBuffer.Add(strKey, pkgInfo);
_view.ListReceivedPackets.Invoke(AddToList, new object[] { item });
}
else
{
_pkgBuffer.Add(strKey, pkgInfo);
_view.ListReceivedPackets.Invoke(AddToList, new object[] { item });
}
} break;
case "Unknown":
{
PacketInfo pkgInfo = new PacketInfo(ipPacket);
_pkgBuffer.Add(strKey, pkgInfo);
ListViewItem item = new ListViewItem(_decPackagesReceived.ToString());
item.SubItems.Add(DateTime.Now.ToString("HH:mm:ss:") + DateTime.Now.Millisecond.ToString());
item.SubItems.Add(ipPacket.SourceAddress.ToString());
item.SubItems.Add("0");
item.SubItems.Add(ipPacket.DestinationAddress.ToString());
item.SubItems.Add("0");
item.SubItems.Add(ipPacket.Protocol);
item.SubItems.Add(ipPacket.TotalLength);
item.SubItems.Add(strKey);
if (_pkgBuffer.Count > StartupInformation.PacketsToCapture && _view.ListReceivedPackets.Items.Count > 0)
{
_view.Invoke(() => _pkgBuffer.Remove(_view.ListReceivedPackets.Items[0].SubItems[8].Text));
_view.ListReceivedPackets.Invoke(RemoveFromList);
_view.ListReceivedPackets.Invoke(AddToList, new object[] { item });
}
else
{
_view.ListReceivedPackets.Invoke(AddToList, new object[] { item });
}
} break;
}
_view.Invoke(() => _view.ProgressBufferusage.Value = _pkgBuffer.Count);
_view.Invoke(() => _view.SetBufferUsage(_pkgBuffer.Count.ToString()));
}
}
private void ConvertData(byte[] bfr, int rcvd)
{
PacketType pkgData;
PacketIP packet = new PacketIP(bfr, rcvd);
ListViewItem item = new ListViewItem();
this.BeginInvoke(new Action(() =>
{
decimal newDataUsage = decimal.Parse(packet.TotalLength) / Mbyte;
DataUsage += newDataUsage;
lblDataUsage.Text = DataUsage.ToString("F2");
File.WriteAllText(generalDataPath + "\\totaldata.txt", DataUsage.ToString());
createAndUpdateDataFolder(newDataUsage);
}));
item.Text = DateTime.Now.ToString("HH:mm:ss:") + DateTime.Now.Millisecond.ToString();
item.SubItems.Add(packet.SourceAddress.ToString());
item.SubItems.Add("0");
item.SubItems.Add(packet.DestinationAddress.ToString());
item.SubItems.Add("0");
item.SubItems.Add(packet.Protocol);
item.SubItems.Add(packet.TotalLength);
switch (packet.Protocol)
{
case "TCP":
PacketTcp tcp = new PacketTcp(packet.Data, packet.MessageLength);
item.SubItems[2].Text = tcp.SourcePort;
item.SubItems[4].Text = tcp.DestinationPort;
pkgData = new PacketType(packet, tcp);
break;
case "UDP":
PacketUdp udp = new PacketUdp(packet.Data, packet.MessageLength);
item.SubItems[2].Text = udp.SourcePort;
item.SubItems[4].Text = udp.DestinationPort;
pkgData = new PacketType(packet, udp);
break;
case "ICMP":
PacketIcmp icmp = new PacketIcmp(packet.Data, packet.MessageLength);
item.SubItems.Add("N/A");
pkgData = new PacketType(packet, icmp);
break;
case "Unknown":
pkgData = new PacketType(packet);
break;
}
if (decimal.Parse(lblDataUsage.Text) > nudDataLimit.Value)
{
System.Diagnostics.Process.Start("ipconfig", "/release");
Stopped = true;
MessageBox.Show("You've reached your data limit!");
}
else
{
//_pkgBuffer.Add(strKey, pkgInfo);
this.BeginInvoke(new Action(() =>
{
lvMessages.Items.Add(item);
}));
}
}
