private async Task InvokeConfigurationEndpointAsync()
{
var notification = new ConfigurationEndpointContext(Context, Options);
notification.Issuer = Context.GetIssuer(Options);
// Metadata requests must be made via GET.
// See http://openid.net/specs/openid-connect-discovery-1_0.html#ProviderConfigurationRequest
if (!string.Equals(Request.Method, "GET", StringComparison.OrdinalIgnoreCase))
{
Logger.LogError("Configuration endpoint: invalid method used.");
return;
}
if (Options.AuthorizationEndpointPath.HasValue)
{
notification.AuthorizationEndpoint = notification.Issuer.AddPath(Options.AuthorizationEndpointPath);
}
if (Options.CryptographyEndpointPath.HasValue)
{
notification.CryptographyEndpoint = notification.Issuer.AddPath(Options.CryptographyEndpointPath);
}
if (Options.ProfileEndpointPath.HasValue)
{
notification.ProfileEndpoint = notification.Issuer.AddPath(Options.ProfileEndpointPath);
}
if (Options.ValidationEndpointPath.HasValue)
{
notification.ValidationEndpoint = notification.Issuer.AddPath(Options.ValidationEndpointPath);
}
if (Options.TokenEndpointPath.HasValue)
{
notification.TokenEndpoint = notification.Issuer.AddPath(Options.TokenEndpointPath);
}
if (Options.LogoutEndpointPath.HasValue)
{
notification.LogoutEndpoint = notification.Issuer.AddPath(Options.LogoutEndpointPath);
}
if (Options.AuthorizationEndpointPath.HasValue)
{
// Only expose the implicit grant type if the token
// endpoint has not been explicitly disabled.
notification.GrantTypes.Add(OpenIdConnectConstants.GrantTypes.Implicit);
if (Options.TokenEndpointPath.HasValue)
{
// Only expose the authorization code and refresh token grant types
// if both the authorization and the token endpoints are enabled.
notification.GrantTypes.Add(OpenIdConnectConstants.GrantTypes.AuthorizationCode);
}
}
if (Options.TokenEndpointPath.HasValue)
{
notification.GrantTypes.Add(OpenIdConnectConstants.GrantTypes.RefreshToken);
// If the authorization endpoint is disabled, assume the authorization server will
// allow the client credentials and resource owner password credentials grant types.
if (!Options.AuthorizationEndpointPath.HasValue)
{
notification.GrantTypes.Add(OpenIdConnectConstants.GrantTypes.ClientCredentials);
notification.GrantTypes.Add(OpenIdConnectConstants.GrantTypes.Password);
}
}
// Only populate response_modes_supported and response_types_supported
// if the authorization endpoint is available.
if (Options.AuthorizationEndpointPath.HasValue)
{
notification.ResponseModes.Add(OpenIdConnectConstants.ResponseModes.FormPost);
notification.ResponseModes.Add(OpenIdConnectConstants.ResponseModes.Fragment);
notification.ResponseModes.Add(OpenIdConnectConstants.ResponseModes.Query);
notification.ResponseTypes.Add(OpenIdConnectConstants.ResponseTypes.Token);
notification.ResponseTypes.Add(OpenIdConnectConstants.ResponseTypes.IdToken);
notification.ResponseTypes.Add(
OpenIdConnectConstants.ResponseTypes.IdToken + ' ' +
OpenIdConnectConstants.ResponseTypes.Token);
// Only expose response types containing code when
// the token endpoint has not been explicitly disabled.
if (Options.TokenEndpointPath.HasValue)
{
notification.ResponseTypes.Add(OpenIdConnectConstants.ResponseTypes.Code);
notification.ResponseTypes.Add(
OpenIdConnectConstants.ResponseTypes.Code + ' ' +
OpenIdConnectConstants.ResponseTypes.Token);
notification.ResponseTypes.Add(
OpenIdConnectConstants.ResponseTypes.Code + ' ' +
OpenIdConnectConstants.ResponseTypes.IdToken);
notification.ResponseTypes.Add(
OpenIdConnectConstants.ResponseTypes.Code + ' ' +
OpenIdConnectConstants.ResponseTypes.IdToken + ' ' +
OpenIdConnectConstants.ResponseTypes.Token);
}
}
notification.Scopes.Add(OpenIdConnectConstants.Scopes.OpenId);
notification.SubjectTypes.Add(OpenIdConnectConstants.SubjectTypes.Public);
notification.SigningAlgorithms.Add(OpenIdConnectConstants.Algorithms.RS256);
await Options.Provider.ConfigurationEndpoint(notification);
if (notification.HandledResponse)
{
return;
}
var payload = new JObject();
payload.Add(OpenIdConnectConstants.Metadata.Issuer, notification.Issuer);
if (!string.IsNullOrEmpty(notification.AuthorizationEndpoint))
{
payload.Add(OpenIdConnectConstants.Metadata.AuthorizationEndpoint, notification.AuthorizationEndpoint);
}
if (!string.IsNullOrEmpty(notification.ProfileEndpoint))
{
payload.Add(OpenIdConnectConstants.Metadata.UserinfoEndpoint, notification.ProfileEndpoint);
}
if (!string.IsNullOrEmpty(notification.ValidationEndpoint))
{
payload.Add(OpenIdConnectConstants.Metadata.IntrospectionEndpoint, notification.ValidationEndpoint);
}
if (!string.IsNullOrEmpty(notification.TokenEndpoint))
{
payload.Add(OpenIdConnectConstants.Metadata.TokenEndpoint, notification.TokenEndpoint);
}
if (!string.IsNullOrEmpty(notification.LogoutEndpoint))
{
payload.Add(OpenIdConnectConstants.Metadata.EndSessionEndpoint, notification.LogoutEndpoint);
}
if (!string.IsNullOrEmpty(notification.CryptographyEndpoint))
{
payload.Add(OpenIdConnectConstants.Metadata.JwksUri, notification.CryptographyEndpoint);
}
payload.Add(OpenIdConnectConstants.Metadata.GrantTypesSupported,
JArray.FromObject(notification.GrantTypes.Distinct()));
payload.Add(OpenIdConnectConstants.Metadata.ResponseModesSupported,
JArray.FromObject(notification.ResponseModes.Distinct()));
payload.Add(OpenIdConnectConstants.Metadata.ResponseTypesSupported,
JArray.FromObject(notification.ResponseTypes.Distinct()));
payload.Add(OpenIdConnectConstants.Metadata.SubjectTypesSupported,
JArray.FromObject(notification.SubjectTypes.Distinct()));
payload.Add(OpenIdConnectConstants.Metadata.ScopesSupported,
JArray.FromObject(notification.Scopes.Distinct()));
payload.Add(OpenIdConnectConstants.Metadata.IdTokenSigningAlgValuesSupported,
JArray.FromObject(notification.SigningAlgorithms.Distinct()));
var context = new ConfigurationEndpointResponseContext(Context, Options, payload);
await Options.Provider.ConfigurationEndpointResponse(context);
if (context.HandledResponse)
{
return;
}
using (var buffer = new MemoryStream())
using (var writer = new JsonTextWriter(new StreamWriter(buffer))) {
payload.WriteTo(writer);
writer.Flush();
Response.ContentLength = buffer.Length;
Response.ContentType = "application/json;charset=UTF-8";
buffer.Seek(offset: 0, loc: SeekOrigin.Begin);
await buffer.CopyToAsync(Response.Body, 4096, Context.RequestAborted);
}
}
/// <summary> /// Called by the client applications to retrieve the OpenID Connect configuration associated with this instance. /// An application may implement this call in order to do any final modification to the configuration metadata. /// </summary> /// <param name="context">The context of the event carries information in and results out.</param> /// <returns>Task to enable asynchronous execution</returns> public virtual Task ConfigurationEndpoint(ConfigurationEndpointContext context) => OnConfigurationEndpoint(context);
/// <summary> /// Called by the client applications to retrieve the OpenID Connect configuration associated with this instance. /// An application may implement this call in order to do any final modification to the configuration metadata. /// </summary> /// <param name="context">The context of the event carries information in and results out.</param> /// <returns>Task to enable asynchronous execution</returns> public virtual Task ConfigurationEndpoint(ConfigurationEndpointContext context) => OnConfigurationEndpoint(context);
