Logon function

[monstrosity]

Hello,

In this example , they use the winapi function LogonUser for logging on and obtaining the token of a windows user. But i don't like that in my vb.net program. Is it possible to obtain the token of a windows user in a more .Net way?

thx,

Tuur

This is how my code looks like:

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
 
        Dim old As WindowsIdentity = WindowsIdentity.GetCurrent
 
        Dim token As System.IntPtr
        Dim jos As WindowsIdentity
 
        If LogonUser("Tuur", System.Environment.MachineName, "blablabla", _
            LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, token) Then
 
            jos = New WindowsIdentity(token)
        End If
 
 
    End Sub
 
    Private Declare Auto Function LogonUser Lib "advapi32.dll" ( _
    ByVal lpszUsername As String, _
    ByVal lpszDomain As String, _
    ByVal lpszPassword As String, _
    ByVal dwLogonType As Integer, _
    ByVal dwLogonProvider As Integer, _
    ByRef phToken As IntPtr) As Boolean
 
    Const LOGON32_LOGON_INTERACTIVE As Long = 2
    Const LOGON32_PROVIDER_DEFAULT As Long = 0

[bmahler]

System.Environment.UserName

[monstrosity]

System.Environment.UserName

That's not the token associated with the user, it's just the username. And the code must get the token of any user, not only the current user.

The code must also verify the password the user has entered.

Is this possible without that WinAPI call?

[bmahler]

My appologies, I didn't fully read your question, but after some searching, I believe that you will need to use the api's.