Windows Authentication for sharepoint 2010 intranet site, for SmartPhones

Question

When our SharePoint 2010 intranet login page loads on desktop PC'S, our Windows Authentication link shows up, this way members can log-in properly. But for some reason, specifically with iPhones and Droid Smart Phone devices, we get the login page but no request for windows authentication. So my question - how can we apply Windows Authentication to log-in form pages, if the user is coming from an iPhone or Droid?

FYI - once the user hits our main intranet page, SharePoint is redirecting mobile users to a custom mobile form page under my /_layouts/ directory, which has no activity of windows authentication for some smart phones. I really want to figure out how to apply windows authentication to the custom form under my _layouts/ directory for all smart phone device users.

Thanks for any advice!

Answer 1

Take a look at this blogpost it seems as if you need some custom code to perform the authentication request.

http://tomaszrabinski.pl/wordpress/2011/06/23/sharepoint-2010-custom-login-page/

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;
     using Microsoft.SharePoint.IdentityModel.Pages;
    using Microsoft.SharePoint;
    using Microsoft.SharePoint.Administration;
    using Microsoft.SharePoint.Utilities;
    using zavaz.CustomLoginPage.Data.Classes;
    using zavaz.CustomLoginPage.Data.Helpers;
     using System.Diagnostics;
     using System.Text.RegularExpressions;

  namespace zavaz.CustomLoginPage.Forms.ASPX
 {
 public class SignInForm : FormsSignInPage
  {
 protected Label lblError;

 protected override void OnInit(EventArgs e)
  {
 base.OnInit(e);
  }

  protected override void OnLoad(EventArgs e)
{
try
{
 base.OnLoad(e);
}
catch { }
  }

  protected void lbInternalUsers_OnClick(object sender, EventArgs e)
  {
  try
  {
  if (null != SPContext.Current && null != SPContext.Current.Site)
 {
  SPIisSettings iisSettings =    SPContext.Current.Site.WebApplication.IisSettings[SPUrlZone.Default];
if (null != iisSettings && iisSettings.UseWindowsClaimsAuthenticationProvider)
 {
SPAuthenticationProvider provider = iisSettings.WindowsClaimsAuthenticationProvider;
  Redirect(provider);
 }
 }
  }
   catch (Exception ex)
 {
   lblError.Text = ex.Message;
  }
    }

    private void Redirect(SPAuthenticationProvider provider)
      {
     string comp =   HttpContext.Current.Request.Url.GetComponents(UriComponents.Query,  UriFormat.SafeUnescaped);
     string url = provider.AuthenticationRedirectionUrl.ToString();
   if (provider is SPWindowsAuthenticationProvider)
      {
    comp = EnsureUrl(comp, true);
      }

     SPUtility.Redirect(url, SPRedirectFlags.Default, this.Context, comp);
      }

      private string EnsureUrl(string url, bool urlIsQueryStringOnly)
      {
  if (!url.Contains("ReturnUrl="))
    {
        if (urlIsQueryStringOnly)
       {
        url = url + (string.IsNullOrEmpty(url) ? "" : "&");
       }
        else
       {
      url = url + ((url.IndexOf('?') == -1) ? "?" : "&");
      }
      url = url + "ReturnUrl=";
      }
    return url;
    }
       }
      }