how to send first initial request via Socket in CIFS in C#?

HI,

how to send first initial request via Socket in CIFS in C# ? I want to send first initial request and get a response from destination address in C#. I want to send CIFS request in form of CIFS format.

Any code snippet is highly appre开发者_Python百科ciated.

Thanks in Advance.

---

@Foole : Ya I tried like this :

internal enum CommandTypes : byte { SMB_COM_CREATE_DIRECTORY = 0x00, SMB_COM_DELETE_DIRECTORY = 0x01, SMB_COM_OPEN = 0x02, SMB_COM_CREATE = 0x03, SMB_COM_CLOSE = 0x04, SMB_COM_FLUSH = 0x05, SMB_COM_DELETE = 0x06, SMB_COM_RENAME = 0x07, SMB_COM_QUERY_INFORMATION = 0x08, SMB_COM_SET_INFORMATION = 0x09, SMB_COM_READ = 0x0A, SMB_COM_WRITE = 0x0B, SMB_COM_LOCK_BYTE_RANGE = 0x0C, SMB_COM_UNLOCK_BYTE_RANGE = 0x0D, SMB_COM_CREATE_TEMPORARY = 0x0E, SMB_COM_CREATE_NEW = 0x0F, SMB_COM_CHECK_DIRECTORY = 0x10, SMB_COM_PROCESS_EXIT = 0x11, SMB_COM_SEEK = 0x12, SMB_COM_LOCK_AND_READ = 0x13, SMB_COM_WRITE_AND_UNLOCK = 0x14, SMB_COM_READ_RAW = 0x1A, SMB_COM_READ_MPXv0x1B, SMB_COM_READ_MPX_SECONDARY = 0x1C, SMB_COM_WRITE_RAW = 0x1D, SMB_COM_WRITE_MPX = 0x1E, SMB_COM_WRITE_MPX_SECONDARY = 0x1F, SMB_COM_WRITE_COMPLETE = 0x20, SMB_COM_QUERY_SERVER = 0x21, SMB_COM_SET_INFORMATION2 = 0x22, SMB_COM_QUERY_INFORMATION2 = 0x23, SMB_COM_LOCKING_ANDX = 0x24, SMB_COM_TRANSACTION = 0x25, SMB_COM_TRANSACTION_SECONDARY = 0x26, SMB_COM_IOCTL = 0x27, SMB_COM_IOCTL_SECONDARY = 0x28, SMB_COM_COPY = 0x29, SMB_COM_MOVE = 0x2A, SMB_COM_ECHO = 0x2B, SMB_COM_WRITE_AND_CLOSE = 0x2C, SMB_COM_OPEN_ANDX = 0x2D, SMB_COM_READ_ANDX = 0x2E, SMB_COM_WRITE_ANDX = 0x2F, SMB_COM_NEW_FILE_SIZE = 0x30, SMB_COM_CLOSE_AND_TREE_DISC = 0x31, SMB_COM_TRANSACTION2 = 0x32, SMB_COM_TRANSACTION2_SECONDARY = 0x33, SMB_COM_FIND_CLOSE2 = 0x34, SMB_COM_FIND_NOTIFY_CLOSE = 0x35, /* Used by Xenix/Unix 0x60 � 0x6E */ SMB_COM_TREE_CONNECT = 0x70, SMB_COM_TREE_DISCONNECT = 0x71, SMB_COM_NEGOTIATE = 0x72, SMB_COM_SESSION_SETUP_ANDX = 0x73, SMB_COM_LOGOFF_ANDX = 0x74, SMB_COM_TREE_CONNECT_ANDX = 0x75, SMB_COM_QUERY_INFORMATION_DISK = 0x80, SMB_COM_SEARCH = 0x81, SMB_COM_FIND = 0x82, SMB_COM_FIND_UNIQUE = 0x83, SMB_COM_FIND_CLOSE = 0x84, SMB_COM_NT_TRANSACT = 0xA0, SMB_COM_NT_TRANSACT_SECONDARY = 0xA1, SMB_COM_NT_CREATE_ANDX = 0xA2, SMB_COM_NT_CANCEL = 0xA4, SMB_COM_NT_RENAME = 0xA5, SMB_COM_OPEN_PRINT_FILE = 0xC0, SMB_COM_WRITE_PRINT_FILE = 0xC1, SMB_COM_CLOSE_PRINT_FILE = 0xC2, SMB_COM_GET_PRINT_QUEUE = 0xC3, SMB_COM_READ_BULK = 0xD8, SMB_COM_WRITE_BULK = 0xD9, SMB_COM_WRITE_BULK_DATA = 0xDA }

    public struct CIFSPacket
    {
        public uint protocolIdentifier;//the value must be "0xFF+'SMB'"
        public byte command;

        public byte errorClass;
        public byte reserved;
        public ushort error;

        public byte flags;


        //here there are 14 bytes of data which is used differently among different dialects.
        //I do want the flags2 however so I'll try parsing them
        public ushort flags2;

        public ushort treeId;
        public ushort processId;
        public ushort userId;
        public ushort multiplexId;
        //trans request
        public byte wordCount;//Count of parameter words defining the data portion of the packet.
        //from here it might be undefined...

        public int parametersStartIndex;

        public ushort byteCount;//buffer length
        public int bufferStartIndex;

       // [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 100)] 
        public string Buffer;


    }



     static void Main(string[] args)
    {

          sock = new Socket(AddressFamily.InterNetwork,  
         SocketType.Stream, ProtocolType.Tcp); 
               // create server IPEndPoint instance. We assume  
               //GetHostEntry returns at least one address 
          IPAddress server = IPAddress.Parse("172.24.18.240");
          int servPort = 139;

             IPEndPoint serverEndPoint = new IPEndPoint(Dns.GetHostEntry(server).AddressList[0], servPort);

              // CONNECT THE SOCKET TO THE SERVER ON SPECIFIED PORT

               sock.Connect(serverEndPoint); 

              /// SocketOptionLevel Tcp = new SocketOptionLevel();   
               sock.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);





               CIFSPacket packet = new CIFSPacket();
               packet.protocolIdentifier = 0xff;
               packet.command = (byte)CommandTypes.SMB_COM_NEGOTIATE;
               packet.errorClass = 0xff;
               packet.error = 0;
               packet.flags = 0x00;
               packet.flags2 = 0x0001;
               packet.multiplexId = 22;
               packet.wordCount = 100;
               packet.Buffer = "NT LM 0.12";
               packet.byteCount = (ushort)packet.Buffer.Length;



               //System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
               // Byte[] bytes = encoding.GetBytes(packet.ToString());

               int len = Marshal.SizeOf(packet);
               byte[] arr = new byte[len];
               IntPtr ptr = Marshal.AllocHGlobal(len);
               Marshal.StructureToPtr(packet, ptr, true);
               Marshal.Copy(ptr, arr, 0, len);
               Marshal.FreeHGlobal(ptr);

               //Byte[] bite = null;
               //bite = BitConverter.GetBytes(Convert.ToDouble(packet));


               sock.Send(arr);



               Thread thread = new Thread(new ThreadStart(WorkThreadFunction));
               thread.Start();
              // Console.WriteLine ("Connected to server... SENDING ECHO STRING");
               //Console.ReadLine();   



    }
    public static void WorkThreadFunction()
    {

        byte[] buffer = new byte[1024];
        try
        {
            int iRx = sock.Receive(buffer);
        }

        catch (Exception ex)
        {
        }

    }

But socket does not respondback ??? I think CIFS packet formation is wrong. Any suggestion or code snippet ???