你好，我有一段关于ASP.NET的代码。我使用了DotNetOpenAuth.dll来实现OpenID。下面是代码：
protected void openidValidator_ServerValidate(object source, ServerValidateEventArgs args)
{
// This catches common typos that result in an invalid OpenID Identifier.
args.IsValid = Identifier.IsValid(args.Value);
}
protected void loginButton_Click(object sender, EventArgs e)
{
if (!this.Page.IsValid)
{
return; // don't login if custom validation failed.
}
try
{
using (OpenIdRelyingParty openid = this.createRelyingParty())
{
IAuthenticationRequest request = openid.CreateRequest(this.openIdBox.Text);
// This is where you would add any OpenID extensions you wanted
// to include in the authentication request.
ClaimsRequest objClmRequest = new ClaimsRequest();
objClmRequest.Email = DemandLevel.Request;
objClmRequest.Country = DemandLevel.Request;
request.AddExtension(objClmRequest);
// Send your visitor to their Provider for authentication.
request.RedirectToProvider();
}
}
catch (ProtocolException ex)
{
this.openidValidator.Text = ex.Message;
this.openidValidator.IsValid = false;
}
}
protected void Page_Load(object sender, EventArgs e)
{
this.openIdBox.Focus();
if (Request.QueryString["clearAssociations"] == "1")
{
Application.Remove("DotNetOpenAuth.OpenId.RelyingParty.OpenIdRelyingParty.ApplicationStore");
UriBuilder builder = new UriBuilder(Request.Url);
builder.Query = null;
Response.Redirect(builder.Uri.AbsoluteUri);
}
OpenIdRelyingParty openid = this.createRelyingParty();
var response = openid.GetResponse();
if (response != null)
{
switch (response.Status)
{
case AuthenticationStatus.Authenticated:
// This is where you would look for any OpenID extension responses included
// in the authentication assertion.
var claimsResponse = response.GetExtension<ClaimsResponse>();
State.ProfileFields = claimsResponse;
// Store off the "friendly" username to display -- NOT for username lookup
State.FriendlyLoginName = response.FriendlyIdentifierForDisplay;
// Use FormsAuthentication to tell ASP.NET that the user is now logged in,
// with the OpenID Claimed Identifier as their username.
FormsAuthentication.RedirectFromLoginPage(response.ClaimedIdentifier, false);
break;
case AuthenticationStatus.Canceled:
this.loginCanceledLabel.Visible = true;
break;
case AuthenticationStatus.Failed:
this.loginFailedLabel.Visible = true;
break;
// We don't need to handle SetupRequired because we're not setting
// IAuthenticationRequest.Mode to immediate mode.
////case AuthenticationStatus.SetupRequired:
//// break;
}
}
}
private OpenIdRelyingParty createRelyingParty()
{
OpenIdRelyingParty openid = new OpenIdRelyingParty();
int minsha, maxsha, minversion;
if (int.TryParse(Request.QueryString["minsha"], out minsha))
{
openid.SecuritySettings.MinimumHashBitLength = minsha;
}
if (int.TryParse(Request.QueryString["maxsha"], out maxsha))
{
openid.SecuritySettings.MaximumHashBitLength = maxsha;
}
if (int.TryParse(Request.QueryString["minversion"], out minversion))
{
switch (minversion)
{
case 1: openid.SecuritySettings.MinimumRequiredOpenIdVersion = ProtocolVersion.V10; break;
case 2: openid.SecuritySettings.MinimumRequiredOpenIdVersion = ProtocolVersion.V20; break;
default: throw new ArgumentOutOfRangeException("minversion");
}
}
return openid;
}
对于上述代码，我总是得到
var claimsResponse = response.GetExtension<ClaimsResponse>();
我一直得到claimsResponse == null的结果。这是为什么呢？是否有像RelyingParty的域验证这样的要求，需要进行openid身份验证？请尽快回答。