我有一个asp做的网站，现在想通过asp调用嵌入网页内的一个程序(控件)读取客户端网卡mac地址，请各位前辈多多帮忙。
下面这代码可以做成控件的形式？嵌入网页后，通过asp调用读取客户端网卡mac地址，请各位前辈多多帮忙，告诉怎么做，我是一个初学者，有急用，谢谢！！！
Option Explicit
Public Const NCBASTAT As Long = &H33
Public Const NCBNAMSZ As Long = 16
Public Const HEAP_ZERO_MEMORY As Long = &H8
Public Const HEAP_GENERATE_EXCEPTIONS As Long = &H4
Public Const NCBRESET As Long = &H32
Public Type NET_CONTROL_BLOCK 'NCB
ncb_command As Byte
ncb_retcode As Byte
ncb_lsn As Byte
ncb_num As Byte
ncb_buffer As Long
ncb_length As Integer
ncb_callname As String * NCBNAMSZ
ncb_name As String * NCBNAMSZ
ncb_rto As Byte
ncb_sto As Byte
ncb_post As Long
ncb_lana_num As Byte
ncb_cmd_cplt As Byte
ncb_reserve(9) As Byte ' Reserved, must be 0
ncb_event As Long
End Type
Public Type ADAPTER_STATUS
adapter_address(5) As Byte
rev_major As Byte
reserved0 As Byte
adapter_type As Byte
rev_minor As Byte
duration As Integer
frmr_recv As Integer
frmr_xmit As Integer
iframe_recv_err As Integer
xmit_aborts As Integer
xmit_success As Long
recv_success As Long
iframe_xmit_err As Integer
recv_buff_unavail As Integer
t1_timeouts As Integer
ti_timeouts As Integer
Reserved1 As Long
free_ncbs As Integer
max_cfg_ncbs As Integer
max_ncbs As Integer
xmit_buf_unavail As Integer
max_dgram_size As Integer
pending_sess As Integer
max_cfg_sess As Integer
max_sess As Integer
max_sess_pkt_size As Integer
name_count As Integer
End Type
End Type
Public Type NAME_BUFFER
name As String * NCBNAMSZ
name_num As Integer
name_flags As Integer
End Type
Public Type ASTAT
adapt As ADAPTER_STATUS
NameBuff(30) As NAME_BUFFER
End Type
Public Declare Function Netbios Lib "netapi32.dll" _
(pncb As NET_CONTROL_BLOCK) As Byte
Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" _
(hpvDest As Any, ByVal _
hpvSource As Long, ByVal _
cbCopy As Long)
Public Declare Function GetProcessHeap Lib "kernel32" () As Long
Public Declare Function HeapAlloc Lib "kernel32" _
(ByVal hHeap As Long, ByVal dwFlags As Long, _
ByVal dwBytes As Long) As Long
Public Declare Function HeapFree Lib "kernel32" _
(ByVal hHeap As Long, _
ByVal dwFlags As Long, _
lpMem As Any) As Long
Public Function GetMACAddress() As String
'retrieve the MAC Address for the network controller
'installed, returning a formatted string
Dim tmp As String
Dim pASTAT As Long
Dim NCB As NET_CONTROL_BLOCK
Dim AST As ASTAT
'The IBM NetBIOS 3.0 specifications defines four basic
'NetBIOS environments under the NCBRESET command. Win32
'follows the OS/2 Dynamic Link Routine (DLR) environment.
'This means that the first NCB issued by an application
'must be a NCBRESET, with the exception of NCBENUM.
'The Windows NT implementation differs from the IBM
'NetBIOS 3.0 specifications in the NCB_CALLNAME field.
NCB.ncb_command = NCBRESET
Call Netbios(NCB)
'To get the Media Access Control (MAC) address for an
'ethernet adapter programmatically, use the Netbios()
'NCBASTAT command and provide a "*" as the name in the
'NCB.ncb_CallName field (in a 16-chr string).
NCB.ncb_callname = "* "
NCB.ncb_command = NCBASTAT
'For machines with multiple network adapters you need to
'enumerate the LANA numbers and perform the NCBASTAT
'command on each. Even when you have a single network
'adapter, it is a good idea to enumerate valid LANA numbers
'first and perform the NCBASTAT on one of the valid LANA
'numbers. It is considered bad programming to hardcode the
'LANA number to 0 (see the comments section below).
NCB.ncb_lana_num = 0
NCB.ncb_length = Len(AST)
pASTAT = HeapAlloc(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS _
Or HEAP_ZERO_MEMORY, NCB.ncb_length)
If pASTAT = 0 Then
Debug.Print "memory allocation failed!"
Exit Function
End If
NCB.ncb_buffer = pASTAT
Call Netbios(NCB)
CopyMemory AST, NCB.ncb_buffer, Len(AST)
tmp = Format$(Hex(AST.adapt.adapter_address(0)), "00") & " " & _
Format$(Hex(AST.adapt.adapter_address(1)), "00") & " " & _
Format$(Hex(AST.adapt.adapter_address(2)), "00") & " " & _
Format$(Hex(AST.adapt.adapter_address(3)), "00") & " " & _
Format$(Hex(AST.adapt.adapter_address(4)), "00") & " " & _
Format$(Hex(AST.adapt.adapter_address(5)), "00")
HeapFree GetProcessHeap(), 0, pASTAT
GetMACAddress = tmp
End Function
'--end block--'
Form Code
To a form add a command button (Command1), and a text box (Text1). Labels and
frames are optional. Add the following to the command button:
------------------------------------------------------------------------------
--
Option Explicit
Private Sub Command1_Click()
Text1 = GetMACAddress()
End Sub
'--end block--'
Comments
Other hardware and software may be assigned their own MAC addresses. For
example, a modem can have a MAC address. Also, a RAS client or server can
install "dummy" network adapters that correspond to a dialup or serial
connection. Normally, these MAC addresses are randomly generated. If an
adapter status is called on a LANA that corresponds to one of these adapters
when no connection is present, Netbios returns error 0x34 (NRC_ENVNOTDEF)
even if a reset was previously performed.
With the NetBEUI and IPX transports, the same information can be obtained at
a command prompt by using:
net config workstation
The ID given is the MAC address.
How to Use LANA Numbers in a 32-bit Environment
Last reviewed: August 7, 1996
Article ID: Q138037
The information in this article applies to:
Microsoft Win32 Software Development Kit (SDK) versions 3.1, 3.5, 3.51, 4.0
SUMMARY
NetBIOS uses the concept of a LANA (LAN adapter number) that allows you to
write transport-independent NetBIOS applications. This article describes what
a LANA is and recommends an approach to writing NetBIOS applications.
MORE INFORMATION
A LANA is a field of the NetBIOS NCB structure. In IBM's NetBIOS 3.0
specification, a LANA was used to specify a particular network adapter, as
NetBIOS then supported up to two network adapters in one PC computer.
Specifying a LANA of zero directed a request to the first adapter, and
specifying a LANA of one directed a request to the second adapter.
Originally, IBM sent NetBIOS packets over the NetBEUI protocol, also known as
the NetBIOS Frames protocol. This was the only transport NetBIOS could use to
send data across the network. In other words, each network adapter had only
one protocol to send and receive NetBIOS packets.
Because most computers have only one network adapter, many MS-DOS-based
applications send all their requests to a LANA value of zero (also called
simply 'LANA zero'). If a second network adapter is installed, some programs
allow the user to configure the application to use LANA one instead. As a
result, LANA zero became a default setting, though it was never intended to
be a default.
Today's network technology allows NetBIOS to use transports other than
NetBEUI. Microsoft has extended the meaning of LANA to indicate a specific
transport on a specific adapter. For example, if you have two network
adapters, and have IPX/SPX and NetBEUI transports installed, you have four
LANAs. The LANAs may or may not be sequential, and there is no systematic way
to identify which transport maps to which LANA.
In addition to extending the meaning of a LANA, Microsoft also added an NCB
command (NCBENUM) that returns an array of available LANA numbers. As an
example, the LANA_ENUM structure filled by NCBENUM might hold an array with
values 0, 3, 5, and 6. Zero might map to IPX/SPX on the first adapter, three
might map to NETBEUI on a second adapter, and so on.
In Windows NT and Windows 95, network adapters consist of physical adapters
(like a 3Com Etherlink II) and software adapters (like the Dial Up Adapter).
In addition, a user may have TCP/IP, NETBEUI, IPX/SPX, and other transports
installed, all of which have NetBIOS support.
For Windows NT, LANAs are configurable through the control panel. Choose the
Network applet, choose the NetBIOS Interface component, then choose
Configure. A dialog appears that allows you to edit the LANAs.
For Windows 95, you may only set LANA zero, the default protocol, and if no
protocol is set as default, there won't be a LANA zero. You can set the
default protocol in the control panel. Choose the Network applet, choose the
protocol you want as default, choose Properties, the Advanced tab, and
finally check 'Set this protocol to be the default protocol'.
LANAs may seem like a constraint that your application must work around.
However, making your application ignorant of how users want to configure
their machines is a powerful idea, and one that makes life easier for your
customers.
The best way to write a NetBIOS application is to support all LANAs, and
establish connections over any LANA. A good approach is outlined in the
following steps:
Enumerate the LANAs by submitting NCBENUM.
Reset each LANA by submitting one NCBRESET per LANA.
Add your local NetBIOS name to each LANA. The name may be the same on each
LANA.
Connect using any LANA:
For servers, submit an NCBLISTEN on each LANA. If necessary, cancel any
outstanding listen after the first listen is satisfied.
For clients, submit an NCBFINDNAME (Windows NT only) or an NCBCALL (either
Windows NT or Windows 95) on each LANA. The first successful find name or
call will indicate which LANA to use. When using NCBCALL instead of
NCBFINDNAME, you must cancel any pending NCBCALLs and hang up the extra
completed calls (when two or more calls are successful.)
It is a good idea to submit NCBADDNAME, NCBLISTEN, NCBFINDNAME, and NCBCALL
asynchronously. Asynchronous requests will be processed almost in parallel on
each transport.
This architecture is quite beneficial. Once your application is written to
establish connections in this manner, it will support any transport that
NetBIOS can use. As a result, your customers will not have to configure
anything within your application, and your application will not be affected
by dynamic LANAs such as dial-up adapters or plug-and-play hardware. 
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