AUTHENTIFICATION WINDOWS

Voila ce que vous trouverez dans le module


Module mod_environ

    ' these declrations are public on purpose
    ' they are use to store your login account
    ' even the login user in not necessary, cause you can retrieve it with GetMyUserName
    ' it's mandatory for the pass

    Public MyUserPassword As String = ""

    Public Enum LogonType As Integer
        'This logon type is intended for users who will be interactively using the computer, such as a user being logged on 
        'by a terminal server, remote shell, or similar process.
        'This logon type has the additional expense of caching logon information for disconnected operations; 
        'therefore, it is inappropriate for some client/server applications,
        'such as a mail server.
        LOGON32_LOGON_INTERACTIVE = 2

        'This logon type is intended for high performance servers to authenticate plaintext passwords.
        'The LogonUser function does not cache credentials for this logon type.
        LOGON32_LOGON_NETWORK = 3

        'This logon type is intended for batch servers, where processes may be executing on behalf of a user without 
        'their direct intervention. This type is also for higher performance servers that process many plaintext
        'authentication attempts at a time, such as mail or Web servers. 
        'The LogonUser function does not cache credentials for this logon type.
        LOGON32_LOGON_BATCH = 4

        'Indicates a service-type logon. The account provided must have the service privilege enabled. 
        LOGON32_LOGON_SERVICE = 5

        'This logon type is for GINA DLLs that log on users who will be interactively using the computer. 
        'This logon type can generate a unique audit record that shows when the workstation was unlocked. 
        LOGON32_LOGON_UNLOCK = 7

        'This logon type preserves the name and password in the authentication package, which allows the server to make 
        'connections to other network servers while impersonating the client. A server can accept plaintext credentials 
        'from a client, call LogonUser, verify that the user can access the system across the network, and still 
        'communicate with other servers.
        'NOTE: Windows NT:  This value is not supported. 
        LOGON32_LOGON_NETWORK_CLEARTEXT = 8

        'This logon type allows the caller to clone its current token and specify new credentials for outbound connections.
        'The new logon session has the same local identifier but uses different credentials for other network connections. 
        'NOTE: This logon type is supported only by the LOGON32_PROVIDER_WINNT50 logon provider.
        'NOTE: Windows NT:  This value is not supported. 
        LOGON32_LOGON_NEW_CREDENTIALS = 9
    End Enum
    Public Enum LogonProvider As Integer
        'Use the standard logon provider for the system. 
        'The default security provider is negotiate, unless you pass NULL for the domain name and the user name 
        'is not in UPN format. In this case, the default provider is NTLM. 
        'NOTE: Windows 2000/NT:   The default security provider is NTLM.
        LOGON32_PROVIDER_DEFAULT = 0
    End Enum
    ' Declare the logon types as constants
    Const LOGON32_LOGON_INTERACTIVE As Long = 2
    Const LOGON32_LOGON_NETWORK As Long = 3

    ' Declare the logon providers as constants
    Const LOGON32_PROVIDER_DEFAULT As Long = 0
    Const LOGON32_PROVIDER_WINNT50 As Long = 3
    Const LOGON32_PROVIDER_WINNT40 As Long = 2
    Const LOGON32_PROVIDER_WINNT35 As Long = 1

    Const MAX_ENTRY As Integer = 32768
    Declare Auto Function LogonUser Lib "advapi32.dll" (ByVal lpszUsername As String, _
       ByVal lpszDomain As String, ByVal lpszPassword As String, ByVal dwLogonType As LogonType, _
        ByVal dwLogonProvider As LogonProvider, ByRef phToken As IntPtr) As Integer
#Region "FUNCTIONS"
    '==========================================================
    ' La deuxième extrait le nom de domaine de l'utilisateur.
    '==========================================================
    Function GetUserDomain() As String
        If TypeOf My.User.CurrentPrincipal Is _
        Security.Principal.WindowsPrincipal Then
            ' L'UTILISATEUR UTILISE L'AUTHENTIFICATION WINDOWS
            ' LE FORMAT DE L'UTILISATEUR EST DU TYPE NOM_DE_DOMAINE\UTILISATEUR
            Dim parts() As String = Split(My.User.Name, "\")
            Dim domain As String = parts(0)
            Return domain
        Else
            ' UTILISATION D'UNE IDENTIFICATION PERSONNALISEE
            Return ""
        End If
    End Function
    '=====================================================================
    ' La première extrait le compte d'ouvertrue de la session WINDOWS
    '=====================================================================
    Function GetUserName() As String
        If TypeOf My.User.CurrentPrincipal Is _
        Security.Principal.WindowsPrincipal Then
            ' L'UTILISATEUR UTILISE L'AUTHENTIFICATION WINDOWS
            ' LE FORMAT DE L'UTILISATEUR EST DU TYPE NOM_DE_DOMAINE\UTILISATEUR
            Dim parts() As String = Split(My.User.Name, "\")
            Dim username As String = parts(1)
            Return username
        Else
            ' UTILISATION D'UNE IDENTIFICATION PERSONNALISEE
            Return My.User.Name
        End If
    End Function
    Public Function ValidateLogin( _
    ByVal Username As String, _
    ByVal Password As String, _
    ByVal Domain As String) As Boolean

        ' This is the token returned by the API call
        ' Look forward to a future article covering
        ' the uses of it
        Dim token As IntPtr

        ' Call the API
        If Not LogonUser(Username, _
            Domain, _
            Password, _
            LOGON32_LOGON_NETWORK, _
            LOGON32_PROVIDER_DEFAULT, token) = 0 Then

            ' Since the API didn't return 0, return TRUE to the caller
            Return True
        Else
            ' Bad credentials, return FALSE
            Return False
        End If
    End Function
    Function CheckWithOtehrSession(ByVal UserName As String, ByVal UserPwd As String) As Boolean

        ' WRITE YOUR OWN CODE TO VERIFY THE ACCOUNTS
    End Function
#End Region
End Module