Windows Azure Authentication in Asp.net
How we implement windows azure authentication in asp.net web applications?
Code in Home View
@{
/**/
ViewBag.Title = "Windows Azure Athentications";
}
<h2>Index</h2>
@if (Session["UniqueName"] != null)
{<text>
Windows Azure Authentication - Given Name: @Session["UniqueName"].ToString() </text>
}
@using (Html.BeginForm("Login", "Home", FormMethod.Post))
{
<input type="submit" value="Login" />
}
Code in Home Controller
private static string clientId = WebConfigurationManager.AppSettings["ClientId"];
private static string appKey = WebConfigurationManager.AppSettings["AppKey"];
private static string aadInstance = WebConfigurationManager.AppSettings["AADInstance"];
private static string tenant = WebConfigurationManager.AppSettings["Tenant"];
private static string redirectUri = WebConfigurationManager.AppSettings["RedirectUri"];
public static readonly string Authority = String.Format(CultureInfo.InvariantCulture, aadInstance, tenant);
// GET: AADAuth
public ActionResult Index()
{
return View();
}
public ActionResult Login()
{
AuthenticationContext authContext = new AuthenticationContext(Authority);
AuthenticationResult result = null;
Uri uri = new Uri(redirectUri);
result = authContext.AcquireTokenAsync("https://graph.windows.net", clientId, uri, new PlatformParameters(PromptBehavior.SelectAccount)).Result;
Session["UniqueName"] = result.UserInfo.GivenName;
return RedirectToAction("Index", "Home");
}
public void GetAuthorizationCode()
{
JObject response = new JObject();
var parameters = new Dictionary<string, string>
{
{ "response_type", "code" },
{ "client_id", clientId },
{ "redirect_uri", redirectUri },
{ "prompt", "login"},
{ "scope", "openid"}
};
var requestUrl = string.Format("{0}/authorize?{1}", EndPointUrl, BuildQueryString(parameters));
Response.Redirect(requestUrl);
}
public string AcquireTokenWithResource(string resource)
{
var code = Request.Params["code"];
Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContext ac = new Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContext(string.Format("https://login.microsoftonline.com/{0}", tenant
));
ClientCredential clcred =
new ClientCredential(clientId, appKey);
var token =
ac.AcquireTokenByAuthorizationCodeAsync(code,
new Uri(redirectUri), clcred, resource).Result.AccessToken;
return token;
}
private string BuildQueryString(IDictionary<string, string> parameters)
{
var list = new List<string>();
foreach (var parameter in parameters)
{
list.Add(string.Format("{0}={1}", parameter.Key, HttpUtility.UrlEncode(parameter.Value)));
}
return string.Join("&", list);
}
protected string EndPointUrl
{
get
{
return string.Format("{0}/{1}/{2}", "https://login.microsoftonline.com", tenant, @"oauth2/");
}
}
}
This is code for the implementation of Azure authentication.
