static void captureDevice_OnPacketArrival(object sender, CaptureEventArgs e)
{
lock (PacketProcessMutex)
{
TcpPacket tcpPacket = TcpPacket.GetEncapsulated(Packet.ParsePacket(e.Packet.LinkLayerType, e.Packet.Data) as EthernetPacket);
if (tcpPacket.Psh)
{
PacketDirection direction = (tcpPacket.SourcePort == 8995 || (tcpPacket.SourcePort > 20050 && tcpPacket.SourcePort < 20100)) ? PacketDirection.Server2Client : PacketDirection.Client2Server;
byte[] data = new byte[tcpPacket.Bytes.Length - tcpPacket.Header.Length];
Array.Copy(tcpPacket.Bytes, tcpPacket.Header.Length, data, 0, data.Length);
// calculate session id
int sessionid = tcpPacket.DestinationPort * tcpPacket.SourcePort;
CaptureSession session = CaptureSessionList.Instance.Find(s => s.ID == sessionid);
if (session == null)
{
bool login = false;
if ((direction == PacketDirection.Server2Client && tcpPacket.SourcePort == 8995) || (direction == PacketDirection.Client2Server && tcpPacket.DestinationPort == 8995))
{
login = true;
}
session = new CaptureSession(sessionid, (login ? (byte)0 : (byte)4));
CaptureSessionList.Instance.Add(session);
}
session.PacketReceived(data, direction);
}
}
}
public TORCapturedPacket(int id, TORPacketType type, byte[] data, CaptureSession session, PacketDirection direction)
{
_id = id;
_type = type;
_data = data;
_session = session;
_direction = direction;
}
public TORCapturedPacket(int id, TORPacketType type, byte[] data, CaptureSession session, PacketDirection direction)
{
_id = id;
_type = type;
_data = data;
_session = session;
_direction = direction;
}
public static XmlDocument CreateSessionDocument(CaptureSession session)
{
XmlDocument doc = new XmlDocument();
XmlElement root_element = doc.CreateElement("CaptureSession");
root_element.Attributes.Append(CreateAttribute(doc, "SaveTime", DateTime.Now.ToString()));
foreach (TORCapturedPacket pkt in session.CapturedPackets)
{
root_element.AppendChild(CreatePacketElement(doc, pkt));
}
doc.AppendChild(root_element);
return doc;
}
public static XmlDocument CreateSessionDocument(CaptureSession session)
{
XmlDocument doc = new XmlDocument();
XmlElement root_element = doc.CreateElement("CaptureSession");
root_element.Attributes.Append(CreateAttribute(doc, "SaveTime", DateTime.Now.ToString()));
foreach (TORCapturedPacket pkt in session.CapturedPackets)
{
root_element.AppendChild(CreatePacketElement(doc, pkt));
}
doc.AppendChild(root_element);
return(doc);
}
static void captureDevice_OnPacketArrival(object sender, CaptureEventArgs e)
{
lock (PacketProcessMutex)
{
TcpPacket tcpPacket = TcpPacket.GetEncapsulated(Packet.ParsePacket(e.Packet.LinkLayerType, e.Packet.Data) as EthernetPacket);
if (tcpPacket.Psh)
{
PacketDirection direction = (tcpPacket.SourcePort == 8995 || (tcpPacket.SourcePort > 20050 && tcpPacket.SourcePort < 20100)) ? PacketDirection.Server2Client : PacketDirection.Client2Server;
byte[] data = new byte[tcpPacket.Bytes.Length - tcpPacket.Header.Length];
Array.Copy(tcpPacket.Bytes, tcpPacket.Header.Length, data, 0, data.Length);
// calculate session id
int sessionid = tcpPacket.DestinationPort * tcpPacket.SourcePort;
CaptureSession session = CaptureSessionList.Instance.Find(s => s.ID == sessionid);
if (session == null)
{
bool login = false;
if((direction == PacketDirection.Server2Client && tcpPacket.SourcePort == 8995) || (direction == PacketDirection.Client2Server && tcpPacket.DestinationPort == 8995))
login = true;
session = new CaptureSession(sessionid, (login ? (byte)0 : (byte)4));
CaptureSessionList.Instance.Add(session);
}
session.PacketReceived(data, direction);
}
}
}
