C# IAuthenticationService.RedirectToAuthenticationProvider方法代码示例

        public HomeModule(IAuthenticationService authenticationService)
        {
            Get["/"] = parameters => View["login"];

            Get["/RedirectToAuthenticate/{providerKey}"] = parameters =>
                                                           {
                                                               // State key.
                                                               Session[SessionGuidKey] = Guid.NewGuid();

                                                               // TODO: What happens if an invalid providerKey is provided?
                                                               var authenticationServiceSettings = AuthenticationServiceSettingsFactory.
                                                                   GetAuthenticateServiceSettings(parameters.providerKey);
                                                               authenticationServiceSettings.State =
                                                                   Session[SessionGuidKey].ToString();
                                                               
                                                               Uri uri =
                                                                   authenticationService.
                                                                       RedirectToAuthenticationProvider(authenticationServiceSettings);
                                                               
                                                               return Response.AsRedirect(uri.AbsoluteUri);
                                                           };


            Get["/AuthenticateCallback"] = parameters =>
                                           {
                                               if (string.IsNullOrEmpty(Request.Query.providerKey))
                                               {
                                                   throw new ArgumentNullException("providerKey");
                                               }

                                               // Retrieve the state for the XSS check.
                                               // It's possible that a person might hit this resource directly, before any session value
                                               // has been set. As such, we should just fake some state up, which will not match the
                                               // CSRF check.
                                               var existingState = (Guid)(Session[SessionGuidKey] ?? Guid.NewGuid());

                                               var model = new AuthenticateCallbackViewModel();

                                               var querystringParameters = new NameValueCollection();
                                               foreach (var item in Request.Query)
                                               {
                                                   querystringParameters.Add(item, Request.Query[item]);
                                               }

                                               try
                                               {
                                                   model.AuthenticatedClient =
                                                       authenticationService.CheckCallback(Request.Query.providerKey,
                                                                                           querystringParameters,
                                                                                           existingState.ToString());
                                               }
                                               catch (Exception exception)
                                               {
                                                   model.Exception = exception;
                                               }


                                               return View["AuthenticateCallback", model];
                                           };
        }

        public WorldDominationAuthenticationModule(IAuthenticationService authenticationService,
                                                   IAuthenticationCallbackProvider authenticationCallbackProvider)
        {
            Get["/authentication/redirect/{providerkey}"] = _ =>
            {
                if (string.IsNullOrEmpty((string)_.providerkey))
                {
                    throw new ArgumentException(
                        "You need to supply a valid provider key so we know where to redirect the user.");
                }
                
                var settings = authenticationService.GetAuthenticateServiceSettings((string)_.providerkey);
                var guidString = Guid.NewGuid().ToString();

                Session[StateKey] = guidString;
                settings.State = guidString;
                settings.CallBackUri = GetReturnUrl("/authentication/authenticatecallback",
                                                    (string)_.providerkey);

                Uri uri = authenticationService.RedirectToAuthenticationProvider(settings);

                return Response.AsRedirect(uri.AbsoluteUri);
            };

            Get["/authentication/authenticatecallback"] = _ =>
            {
                if (string.IsNullOrEmpty(Request.Query.providerkey))
                {
                    throw new ArgumentException("No provider key was supplied on the callback.");
                }

                var existingState = (Session[StateKey] as string) ?? string.Empty;
                var model = new AuthenticateCallbackData();
                var querystringParameters = new NameValueCollection();

                foreach (var item in Request.Query)
                {
                    querystringParameters.Add(item, Request.Query[item]);
                }

                try
                {
                    model.AuthenticatedClient =
                        authenticationService.GetAuthenticatedClient((string) Request.Query.providerKey,
                                                                     querystringParameters, existingState);
                }
                catch (Exception exception)
                {
                    model.Exception = exception;
                }

                return authenticationCallbackProvider.Process(this, model);
            };
        }

        public HomeModule(IAuthenticationService authenticationService)
        {
            Get["/"] = parameters => View["login"];

            Get["/RedirectToAuthenticate/{providerKey}"] = parameters =>
            {
                // State key.
                Session[SessionGuidKey] = Guid.NewGuid();

                var settings =
                    authenticationService.GetAuthenticateServiceSettings(parameters.providerKey.Default<string>());

                settings.State = Session[SessionGuidKey].ToString();
                settings.CallBackUri = GetReturnUrl(Context, "/AuthenticateCallback", parameters.providerKey);

                Uri uri = authenticationService.RedirectToAuthenticationProvider(settings);

                return Response.AsRedirect(uri.AbsoluteUri);
            };

            Get["/AuthenticateCallback"] = parameters =>
            {
                if (string.IsNullOrEmpty(Request.Query.providerKey))
                {
                    throw new ArgumentNullException("providerKey");
                }

                // Retrieve the state for the XSS check.
                // It's possible that a person might hit this resource directly, before any session value
                // has been set. As such, we should just fake some state up, which will not match the
                // CSRF check.
                var existingState = (Guid) (Session[SessionGuidKey] ?? Guid.NewGuid());
                var model = new AuthenticateCallbackViewModel();
                
                try
                {
                    model.AuthenticatedClient =
                        authenticationService.GetAuthenticatedClient(Request.Query.providerKey,
                                                                     Request.Query,
                                                                     existingState.ToString());
                }
                catch (Exception exception)
                {
                    model.Exception = exception;
                }

                return View["AuthenticateCallback", model];
            };
        }

        private dynamic RedirectToAuthenticationProvider(IAuthenticationService authenticationService,
            IAuthenticationCallbackProvider authenticationCallbackProvider,
            string providerKey, Uri identifier = null)
        {
            if (authenticationService == null)
            {
                throw new ArgumentNullException();
            }

            if (authenticationCallbackProvider == null)
            {
                throw new ArgumentNullException("authenticationCallbackProvider");
            }

            if (string.IsNullOrEmpty(providerKey))
            {
                throw new ArgumentNullException("providerKey");
            }

            // Grab the required Provider settings.

            var settings = authenticationService.GetAuthenticateServiceSettings(providerKey, Request.Url);

            // An OpenId specific settings provided?
            if (identifier != null &&
                settings is IOpenIdAuthenticationServiceSettings)
            {
                ((IOpenIdAuthenticationServiceSettings) settings).Identifier = identifier;
            }

            // Remember the State value (for CSRF protection).
            Session[StateKey] = settings.State;

            //// Convention: If no redirectUrl data has been provided, then default to the Referrer, if one exists.
            //if (RedirectUrl != null &&
            //    !string.IsNullOrEmpty(RedirectUrl.AbsoluteUri))
            //{
            //    // We have extra state information we will need to retrieve.
            //    Session[RedirectUrlKey] = RedirectUrl.AbsoluteUri;
            //}
            //else if (Request != null &&
            //    Request. != null &&
            //    !string.IsNullOrEmpty(Request.UrlReferrer.AbsoluteUri))
            //{
            //    Session[RedirectUrlKey] = Request.UrlReferrer.AbsoluteUri;
            //}

            // Determine the provider's end point Url we need to redirect to.
            // NOTE: It's possible we're trying to goto an OpenId endpoint. But the user has entered
            var uri = authenticationService.RedirectToAuthenticationProvider(settings);
            if (uri == null || string.IsNullOrEmpty(uri.AbsoluteUri))
            {
                return authenticationCallbackProvider.OnRedirectToAuthenticationProviderError(this,
                                                                                                "No valid Uri was found - not sure where to redirect to?");
            }

            // Kthxgo!
            return Response.AsRedirect(uri.AbsoluteUri);
        }