VB - Login to another computer on the network

[mendhak]

'in a .bas module
 
Option Explicit
Private Declare Function LogonUser Lib "advapi32.dll" Alias "LogonUserA" (ByVal lpszUsername As String, ByVal lpszDomain As String, ByVal lpszPassword As String, ByVal dwLogonType As Long, ByVal dwLogonProvider As Long, phToken As Long) As Long
Private Declare Function ImpersonateLoggedOnUser Lib "advapi32.dll" (ByVal hToken As Long) As Long
Private Declare Function RevertToSelf Lib "advapi32.dll" () As Long
Private Const LOGON32_PROVIDER_DEFAULT    As Long = 0&
Private Const LOGON32_PROVIDER_WINNT35    As Long = 1&
Private Const LOGON32_LOGON_INTERACTIVE   As Long = 2&
Private Const LOGON32_LOGON_NETWORK       As Long = 3&
Private Const LOGON32_LOGON_BATCH         As Long = 4&
Private Const LOGON32_LOGON_SERVICE       As Long = 5&
 
 
Public Function doLogon(ByVal strAdminUser As String, ByVal strAdminPassword As String, ByVal strAdminDomain As String) As Boolean
On Error GoTo DamnErr
    Dim lngTokenHandle As Long
    Dim lngLogonType As Long
    Dim lngLogonProvider As Long
    Dim blnResult As Boolean
    lngLogonType = LOGON32_LOGON_INTERACTIVE
    lngLogonProvider = LOGON32_PROVIDER_DEFAULT
    blnResult = RevertToSelf()
    blnResult = LogonUser(strAdminUser, strAdminDomain, strAdminPassword, _
                                         lngLogonType, lngLogonProvider, _
                                         lngTokenHandle)
    blnResult = ImpersonateLoggedOnUser(lngTokenHandle)
    doLogon = blnResult
    Exit Function
DamnErr:
   Dim sERRORtxt As String
   sERRORtxt = "Error Number: " & Err.Number & vbCrLf & _
               "Description: " & Err.Description & vbCrLf & _
               "Source: " & Err.Source & vbCrLf & _
               "Function: doLogon" & vbCrLf & _
               "Date: " & Now() & vbCrLf & _
               "Input:" & vbCrLf & _
               "  strAdminUser=" & strAdminUser & vbCrLf & _
               "  strAdminPassword=" & strAdminPassword & vbCrLf & _
               "  strAdminDomain=" & strAdminDomain
   App.LogEvent sERRORtxt, vbLogEventTypeError
   Err.Clear
End Function
 
Public Function doLogoff() As Boolean
On Error GoTo DamnErr
    doLogoff = RevertToSelf()
    Exit Function
DamnErr:
Dim sERRORtxt As String
   sERRORtxt = "Error Number: " & Err.Number & vbCrLf & _
               "Description: " & Err.Description & vbCrLf & _
               "Source: " & Err.Source & vbCrLf & _
               "Function: doLogoff" & vbCrLf & _
               "Date: " & Now()
   App.LogEvent sERRORtxt, vbLogEventTypeError
   Err.Clear
End Function

When you call it:

doLogon "username", "password", "domain-if-needed"
'code here
'after tasks completed, log off from the pc
doLogoff

[greatful]

Hi,
I try to do with your code given ,but when I login other computer in net work the function always return false

(When i login by window it's ok )
Example :
I login computer with ip 192.1.1.20 with username : Greatful and pass : 1223456
the function returns false

Please give me your advices !

Thanks,

[bigo]

Dear ....,

Many thanks to your effort, but your code didnot work

I send u the project ,


waiting your reply