Exemplo n.º 1
0
        public void ProcessTCP(IpV4Datagram packet)
        {
            IpV4Datagram ip  = packet;
            TcpDatagram  tcp = packet.Tcp;

            uint        TcpSessionHashCode = UtilityLib.GetTcpSessionHashCode(ip.CurrentDestination, tcp.DestinationPort, ip.Source, tcp.SourcePort);
            ITcpSession session            = (ITcpSession)_tcp_sessions[TcpSessionHashCode];

            if (session != null)
            {
                session.ProcessTCP(packet);
            }
        }
Exemplo n.º 2
0
 public static uint GetTcpSessionHashCode(IpV4Address LocalIP, ushort LocalPort, IpV4Address RemoteIP, ushort RemotePort)
 {
     byte[] LocalAdress  = UtilityLib.ByteArrayJoin(LocalIP.ToBytes(), BitConverter.GetBytes(LocalPort));
     byte[] RemoteAdress = UtilityLib.ByteArrayJoin(RemoteIP.ToBytes(), BitConverter.GetBytes(RemotePort));
     return(Hash(UtilityLib.ByteArrayJoin(LocalAdress, RemoteAdress)));
 }
Exemplo n.º 3
0
 public static uint GetVirtualAdapterHashCode(MacAddress MAC, IpV4Address IP, ushort VLAN)
 {
     return(Hash(UtilityLib.ByteArrayJoin(UtilityLib.ByteArrayJoin(MAC.ToBytes(), IP.ToBytes()), BitConverter.GetBytes(VLAN))));
 }
Exemplo n.º 4
0
 public static uint GetVirtualAdapterHashCode(string MAC, string IP, ushort VLAN)
 {
     return(Hash(UtilityLib.ByteArrayJoin(UtilityLib.ByteArrayJoin(new MacAddress(MAC).ToBytes(), new IpV4Address(IP).ToBytes()), BitConverter.GetBytes(VLAN))));
 }
Exemplo n.º 5
0
        private void PacketProcess(Packet packet)
        {
            // Debug.WriteLine(packet.Ethernet.EtherType.ToString() + " : " + packet.Timestamp.ToString("yyyy-MM-dd hh:mm:ss.fff") + " length:" + packet.Length);
            ushort VLAN = 1;

            if (packet.Ethernet.EtherType == EthernetType.VLanTaggedFrame)
            {
                VLAN = packet.Ethernet.VLanTaggedFrame.VLanIdentifier;
            }

            if (packet.Ethernet.Destination.Equals(UtilityLib.BroadcastMac))
            {
                foreach (VirtualAdapter Adapter in _adapter_hashtable.Values)
                {
                    if (Adapter.VLAN.Equals(VLAN))  // 若为广播包,则交给相应VLAN下所有虚拟适配器处理
                    {
                        Adapter.PacketProcess(packet);
                    }
                }
            }
            else
            {
                if (VLAN != 1)
                {
                    if (packet.Ethernet.VLanTaggedFrame.EtherType == EthernetType.Arp)
                    {
                        VirtualAdapter[] Adapters = GetAdapterByMac(packet.Ethernet.Destination);
                        foreach (VirtualAdapter Adapter in Adapters)
                        {
                            if (Adapter.VLAN.Equals(VLAN))
                            {
                                Adapter.PacketProcess(packet);
                            }
                        }
                    }
                    else if (packet.Ethernet.VLanTaggedFrame.EtherType == EthernetType.IpV4) // 处理IPv4包
                    {
                        uint           AdapterHashCode = UtilityLib.GetVirtualAdapterHashCode(packet.Ethernet.Destination, packet.Ethernet.VLanTaggedFrame.IpV4.CurrentDestination, VLAN);
                        VirtualAdapter Adapter         = (VirtualAdapter)_adapter_hashtable[AdapterHashCode];
                        if (Adapter != null)
                        {
                            Adapter.PacketProcess(packet);
                        }
                    }
                }
                else
                {
                    if (packet.Ethernet.EtherType == EthernetType.Arp)
                    {
                        VirtualAdapter[] Adapters = GetAdapterByMac(packet.Ethernet.Destination);
                        foreach (VirtualAdapter Adapter in Adapters)
                        {
                            if (Adapter.VLAN.Equals(VLAN))
                            {
                                Adapter.PacketProcess(packet);
                            }
                        }
                    }
                    else if (packet.Ethernet.EtherType == EthernetType.IpV4)  // 处理IPv4包
                    {
                        uint           AdapterHashCode = UtilityLib.GetVirtualAdapterHashCode(packet.Ethernet.Destination, packet.Ethernet.IpV4.CurrentDestination, VLAN);
                        VirtualAdapter Adapter         = (VirtualAdapter)_adapter_hashtable[AdapterHashCode];
                        if (Adapter != null)
                        {
                            Adapter.PacketProcess(packet);
                        }
                    }
                }
            }
        }