<%@ Page language = "c#" AutoEventWireup = "true" %>
<%@ Import Namespace = "System.Drawing" %>
<%@ Import Namespace = "System.Web.Security" %>
<%@ Import Namespace = "System.Runtime.InteropServices" %>

<script runat = "server">
   private void Page_Load ( object sender, System.EventArgs e ) {
      try {
         // Determine whether Passport is the type of authentication this page is set to use.
         // Authentication information is set in the Web.config file.
         if ( ! ( this.Context.User.Identity is PassportIdentity ) ) {
            // If this page isn't set to use Passport authentication, quit now.
            this.Response.Write ( "Error: Passport authentication failed. " + 
               "Make sure that the Passport SDK is installed " +
               "and your Web.config file is configured correctly." );
            return;
         }

         // Expire the page to avoid the browser's cache.
         Response.Cache.SetCacheability ( HttpCacheability.NoCache ); 

         // Get a version of the Identity value that is cast as type PassportIdentity. 
         PassportIdentity identity = ( this.Context.User.Identity as PassportIdentity );	

         // Determine whether the user is already signed in with a valid and current ticket.
         // Passing -1 for the parameter values indicates the default values will be used.
         if ( identity.GetIsAuthenticated ( -1, -1, -1 ) ) {
            this.Response.Write ( "Welcome to the site.<br><br>" );
            // Print the Passport sign in button on the screen.
            this.Response.Write ( identity.LogoTag2 ( ) );
            // Make sure the user has core profile information before trying to access it.
            if ( identity.HasProfile ( "core" ) ) {
               this.Response.Write ( "<b>You have been authenticated as " + 
                  "Passport identity:" + identity.Name + "</b></p>" );
            }
         }
         // Determine whether the user has a ticket.
         else if ( identity.HasTicket ) {
            // If the user has a ticket but wasn't authenticated,
            // that means the ticket is stale, so the login needs to be refreshed.
            // Passing true as the fForceLogin parameter value indicates that silent refresh will be accepted.
            identity.LoginUser ( null, -1, true, null, -1, null, -1, true, null );
         }
         // If the user does not already have a ticket, ask the user to sign in.
         else {
            this.Response.Write ( "Please sign in using the link below.<br><br>" );
            // Print the Passport sign in button on the screen.
            this.Response.Write ( identity.LogoTag2 ( ) );
         }
      }
      catch ( System.Runtime.InteropServices.COMException comError ) {
         this.Response.Write ( "An error occured while working with the " +
            "Passport SDK. The following result was returned: " + comError.ErrorCode );
      }
   }
</script>

<%@ Page language = "VB" AutoEventWireup = "true" %>
<%@ Import Namespace = "System.Drawing" %>
<%@ Import Namespace = "System.Web.Security" %>
<%@ Import Namespace = "System.Runtime.InteropServices" %>

<script runat = "server">
   Private Sub Page_Load ( sender As Object, e As System.EventArgs )
      Try 
         ' Determine whether Passport is the type of authentication this page is set to use.
         ' Authentication information is set in the Web.config file.
         If Not TypeOf ( Me.Context.User.Identity ) Is PassportIdentity Then
            ' If this page isn't set to use Passport authentication, quit now.
            Me.Response.Write ( "Error: Passport authentication failed. " & _
               "Make sure that the Passport SDK is installed and your " & _
               "Web.config file is configured correctly." )
            Return
         End If

         ' Expire the page to avoid the browser's cache.
         Response.Cache.SetCacheability ( HttpCacheability.NoCache )
         
         ' Get a version of the Identity value that is cast as type PassportIdentity. 
         Dim identity As PassportIdentity = Me.Context.User.Identity

         ' Determine whether the user is already signed in with a valid and current ticket.
         ' Passing -1 for the parameter values indicates the default values will be used.
         If ( identity.GetIsAuthenticated ( -1, -1, -1 ) ) Then
            Me.Response.Write ( "Welcome to the site.<br><br>" )
            ' Print the Passport sign in button on the screen.
            Me.Response.Write ( identity.LogoTag2 ( ) )
            ' Make sure the user has core profile information before trying to access it.
            If ( identity.HasProfile ( "core" ) ) Then
               Me.Response.Write ( "<b>You have been authenticated as " & _ 
               "Passport identity:" & identity.Name & "</b></p>" )
            End If

         ' Determine whether the user has a ticket.
         ElseIf identity.HasTicket Then
            ' If the user has a ticket but wasn't authenticated,
            ' that means the ticket is stale, so the login needs to be refreshed.
            ' Passing true as the fForceLogin parameter value indicates that silent refresh will be accepted.
            identity.LoginUser ( Nothing, -1, True, Nothing, -1, Nothing, -1, True, Nothing )

         ' If the user does not already have a ticket, ask the user to sign in.
         Else
            Me.Response.Write ( "Please sign in using the link below.<br><br>" )
            ' Print the Passport sign in button on the screen.
            Me.Response.Write ( identity.LogoTag2 ( ) )
         End If

      Catch comError As System.Runtime.InteropServices.COMException
         Me.Response.Write ( "An error occured while working with the " & _
            "Passport SDK. The following result was returned: " & comError.ErrorCode )
      End Try
   End Sub
</script>