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how to create a login page using login control in asp.net using windows authentication.?

lakshmi

lakshmi

16y
11.8k
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    sandeep midgule

    Dear Laxmi,

             The question itself saying that you are on right track fo .net. please go thro following link you will never forget.

    https://forums.asp.net

    sandeep midgule
    16y
    0
    P Narasimha
    P Narasimha
    16y
    0
    P Narasimha

    Hi Lakshimi,

    Plz gothrough this code i think it is usefull .

    Here is what the web.config looks like:
    <?xml version="1.0" encoding="utf-8" ?>
    <configuration>
    <system.web>
    <authentication mode="Windows">
    <forms name="imper2" protection="All" timeout="80" loginUrl="login.aspx" path="/"></forms>
    </authentication>
    <identity impersonate="true"></identity>
    <authorization>
    <deny users="?"></deny>
    </authorization>
    </system.web>
    </configuration>


    Here is what the login.aspx looks like

     <%@ Language=VBScript Debug="True" %>
     
     <%@ Import Namespace="System.Web" %>
     
     <%@ Import Namespace="System.Security.Principal" %>
     
     <%@ Import Namespace="System.Runtime.InteropServices" %>
     
     <%@ Import Namespace="System" %>
     <html> <head> <script runat="server">
Dim LOGON32_LOGON_INTERACTIVE As Integer = 3
Dim LOGON32_PROVIDER_DEFAULT As Integer = 0
Declare Auto Function LogonUser Lib "advapi32.dll" (lpszUsername As String, _
lpszDomain As String, _
lpszPassword As String, _
dwLogonType As Integer, _
dwLogonProvider As Integer, _
ByRef phToken As IntPtr) As Integer
Declare Auto Function DuplicateToken Lib "advapi32.dll" (ByVal ExistingTokenHandle As IntPtr, _
ImpersonationLevel As Integer, _
ByRef DuplicateTokenHandle As IntPtr) As Integer
Instantiate a WindowsImpersonationContext
Dim impersonationContext As WindowsImpersonationContext
Dim currentWindowsIdentity As WindowsIdentity
The page load function this page loads on startup
Sub Button_Click(s As Object, e As EventArgs)
If impersonateValidUser(txtUsername.Text, txtDomain.Text, txtPassword.Text) Then
Response.Write(User.Identity.Name)
undoImpersonation()
Else
Response.Write("We're sorry, we were not able to impersonate you!")            
End If    
End Sub
Private function impersonateValidUser() returns a boolean indicating
if the function call was successful or failed
Private Function impersonateValidUser(userName As String, domain As String, password As String) As Boolean
'Dim userName As String = txtUsername.Text
'Dim domain As String = txtDomain.Text
'Dim password As String = txtPassword.Text
Dim tempWindowsIdentity As WindowsIdentity
Dim token As IntPtr
Dim    tokenDuplicate As IntPtr
If LogonUser("teacher", "mydomain", "*****", LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, token) <> 0 Then
If DuplicateToken (token, 3, tokenDuplicate) <> 0 Then
tempWindowsIdentity = New WindowsIdentity(tokenDuplicate)
impersonationContext = tempWindowsIdentity.Impersonate()
If impersonationContext is Nothing Then
impersonateValidUser = false
Else
impersonateValidUser = true
End If
Else 
impersonateValidUser = false
End If
Else
impersonateValidUser = false
End If
End Function
'reverse the impersonation operation and go back to the original permissions
Private Sub undoImpersonation()
impersonationContext.Undo()
End Sub
</script> <meta name="GENERATOR" Content="Microsoft Visual Studio.NET 7.0"> </head> <body> <form runat="server"> <h3>Please login here:</h3> <hr>
Username:
<asp:TextBox Runat="server" ID="txtUsername" TextMode=SingleLine></asp:TextBox> <br>
Domain:
<asp:TextBox Runat="server" ID="txtDomain" TextMode=SingleLine></asp:TextBox> <br>
Password:
<asp:TextBox Runat="server" ID="txtPassword" TextMode=Password></asp:TextBox> <br> <asp:Button Runat="server" Text="Login" OnClick="Button_Click"></asp:Button> </form> </body> </html>
Thanks
    Narasima


     

    P Narasimha
    16y
    0
    Murali Krishna Ravi
    Hi lakshmi
    we have a login control in toolbox
    u just drag and drop to webpage.then u open web.config file. in that we have seen that
    <forms authentication mode="windows"/>
    if u can change authentication mode into <forms authentication mode="forms"/>
    -> u can go to website menu. in that we have a option websiteadminisration tool-> u can go to->security tab.-> then create users who ar logged into page.



    Murali Krishna Ravi
    16y
    0
    lakshmi

    pls help me, its very urgent.

     

     

    regards,

    swathi

    lakshmi
    16y
    0
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