1: using System;

   2: using System.Web;

   3: using System.IO;

   4: using WindowsLive;

   5:  

   6: /// <summary>

   7: /// This page handles the login, logout and clearcookie Web Auth

   8: /// actions.  When you create a Windows Live application, you must

   9: /// specify the URL of this handler page.

  10: /// </summary>

  11: public partial class HandlerPage : System.Web.UI.Page

  12: {

  13:     const string LoginPage = "default.aspx";

  14:     const string LogoutPage = LoginPage;

  15:     const string LoginCookie = "webauthtoken";

  16:     static DateTime ExpireCookie = DateTime.Now.AddYears(-10);

  17:     static DateTime PersistCookie = DateTime.Now.AddYears(10);

  18:  

  19:     // Initialize the WindowsLiveLogin module.

  20:     static WindowsLiveLogin wll = new WindowsLiveLogin(true);

  21:  

  22:     protected void Page_Load(object sender, EventArgs e)

  23:     {

  24:         HttpRequest req = HttpContext.Current.Request;

  25:         HttpResponse res = HttpContext.Current.Response;

  26:  

  27:         // Extract the 'action' parameter from the request, if any.

  28:         string action = req["action"];

  29:  

  30:         /*

  31:           If action is 'logout', clear the login cookie and redirect

  32:           to the logout page.

  33: 

  34:           If action is 'clearcookie', clear the login cookie and

  35:           return a GIF as response to signify success.

  36: 

  37:           By default, try to process a login. If login was

  38:           successful, cache the user token in a cookie and redirect

  39:           to the site's main page.  If login failed, clear the cookie

  40:           and redirect to the main page.

  41:         */

  42:  

  43:         if (action == "logout")

  44:         {

  45:             HttpCookie loginCookie = new HttpCookie(LoginCookie);

  46:             loginCookie.Expires = ExpireCookie;

  47:             res.Cookies.Add(loginCookie);

  48:             res.Redirect(LogoutPage);

  49:             res.End();

  50:         } 

  51:         else if (action == "clearcookie")

  52:         {

  53:             HttpCookie loginCookie = new HttpCookie(LoginCookie);

  54:             loginCookie.Expires = ExpireCookie;

  55:             res.Cookies.Add(loginCookie);

  56:  

  57:             string type;

  58:             byte[] content;

  59:             wll.GetClearCookieResponse(out type, out content);

  60:             res.ContentType = type;

  61:             res.OutputStream.Write(content, 0, content.Length);

  62:  

  63:             res.End();

  64:         } 

  65:         else 

  66:         {

  67:             WindowsLiveLogin.User user = wll.ProcessLogin(req.Form);

  68:  

  69:             HttpCookie loginCookie = new HttpCookie(LoginCookie);

  70:             if (user != null)

  71:             {

  72:                 loginCookie.Value = user.Token;

  73:  

  74:                 if (user.UsePersistentCookie)

  75:                 {

  76:                     loginCookie.Expires = PersistCookie;

  77:                 }

  78:             } 

  79:             else 

  80:             {

  81:                 loginCookie.Expires = ExpireCookie;

  82:             }   

  83:  

  84:             res.Cookies.Add(loginCookie);

  85:             res.Redirect(LoginPage);

  86:             res.End();

  87:         }

  88:     }

  89: }