Example #1
0
func (c *AuthConfig) getAuthenticationRequestHandler() (authenticator.Request, error) {
	var authRequestHandlers []authenticator.Request

	if c.SessionAuth != nil {
		authRequestHandlers = append(authRequestHandlers, c.SessionAuth)
	}

	for _, identityProvider := range c.Options.IdentityProviders {
		identityMapper := identitymapper.NewAlwaysCreateUserIdentityToUserMapper(c.IdentityRegistry, c.UserRegistry)

		if configapi.IsPasswordAuthenticator(identityProvider) {
			passwordAuthenticator, err := c.getPasswordAuthenticator(identityProvider)
			if err != nil {
				return nil, err
			}
			authRequestHandlers = append(authRequestHandlers, basicauthrequest.NewBasicAuthAuthentication(passwordAuthenticator, true))

		} else {
			switch provider := identityProvider.Provider.Object.(type) {
			case (*configapi.RequestHeaderIdentityProvider):
				var authRequestHandler authenticator.Request

				authRequestConfig := &headerrequest.Config{
					UserNameHeaders: provider.Headers,
				}
				authRequestHandler = headerrequest.NewAuthenticator(identityProvider.Name, authRequestConfig, identityMapper)

				// Wrap with an x509 verifier
				if len(provider.ClientCA) > 0 {
					caData, err := ioutil.ReadFile(provider.ClientCA)
					if err != nil {
						return nil, fmt.Errorf("Error reading %s: %v", provider.ClientCA, err)
					}
					opts := x509request.DefaultVerifyOptions()
					opts.Roots = x509.NewCertPool()
					if ok := opts.Roots.AppendCertsFromPEM(caData); !ok {
						return nil, fmt.Errorf("Error loading certs from %s: %v", provider.ClientCA, err)
					}

					authRequestHandler = x509request.NewVerifier(opts, authRequestHandler)
				}
				authRequestHandlers = append(authRequestHandlers, authRequestHandler)

			}
		}
	}

	authRequestHandler := unionrequest.NewUnionAuthentication(authRequestHandlers...)
	return authRequestHandler, nil
}
Example #2
0
func (c *AuthConfig) getPasswordAuthenticator(identityProvider configapi.IdentityProvider) (authenticator.Password, error) {
	identityMapper := identitymapper.NewAlwaysCreateUserIdentityToUserMapper(c.IdentityRegistry, c.UserRegistry)

	switch provider := identityProvider.Provider.Object.(type) {
	case (*configapi.AllowAllPasswordIdentityProvider):
		return allowanypassword.New(identityProvider.Name, identityMapper), nil

	case (*configapi.DenyAllPasswordIdentityProvider):
		return denypassword.New(), nil

	case (*configapi.HTPasswdPasswordIdentityProvider):
		htpasswdFile := provider.File
		if len(htpasswdFile) == 0 {
			return nil, fmt.Errorf("HTPasswdFile is required to support htpasswd auth")
		}
		if htpasswordAuth, err := htpasswd.New(identityProvider.Name, htpasswdFile, identityMapper); err != nil {
			return nil, fmt.Errorf("Error loading htpasswd file %s: %v", htpasswdFile, err)
		} else {
			return htpasswordAuth, nil
		}

	case (*configapi.BasicAuthPasswordIdentityProvider):
		connectionInfo := provider.RemoteConnectionInfo
		if len(connectionInfo.URL) == 0 {
			return nil, fmt.Errorf("URL is required for BasicAuthPasswordIdentityProvider")
		}
		transport, err := cmdutil.TransportFor(connectionInfo.CA, connectionInfo.ClientCert.CertFile, connectionInfo.ClientCert.KeyFile)
		if err != nil {
			return nil, fmt.Errorf("Error building BasicAuthPasswordIdentityProvider client: %v", err)
		}
		return basicauthpassword.New(identityProvider.Name, connectionInfo.URL, transport, identityMapper), nil

	default:
		return nil, fmt.Errorf("No password auth found that matches %v.  The OAuth server cannot start!", identityProvider)
	}

}
func TestCLIGetToken(t *testing.T) {
	testutil.DeleteAllEtcdKeys()

	// setup
	etcdClient := testutil.NewEtcdClient()
	etcdHelper, _ := master.NewEtcdHelper(etcdClient, latest.Version, etcdtest.PathPrefix())

	accessTokenStorage := accesstokenetcd.NewREST(etcdHelper)
	accessTokenRegistry := accesstokenregistry.NewRegistry(accessTokenStorage)
	authorizeTokenStorage := authorizetokenetcd.NewREST(etcdHelper)
	authorizeTokenRegistry := authorizetokenregistry.NewRegistry(authorizeTokenStorage)
	clientStorage := clientetcd.NewREST(etcdHelper)
	clientRegistry := clientregistry.NewRegistry(clientStorage)
	clientAuthStorage := clientauthetcd.NewREST(etcdHelper)
	clientAuthRegistry := clientauthregistry.NewRegistry(clientAuthStorage)

	userStorage := useretcd.NewREST(etcdHelper)
	userRegistry := userregistry.NewRegistry(userStorage)
	identityStorage := identityetcd.NewREST(etcdHelper)
	identityRegistry := identityregistry.NewRegistry(identityStorage)

	identityMapper := identitymapper.NewAlwaysCreateUserIdentityToUserMapper(identityRegistry, userRegistry)

	authRequestHandler := basicauthrequest.NewBasicAuthAuthentication(allowanypassword.New("get-token-test", identityMapper), true)
	authHandler := oauthhandlers.NewUnionAuthenticationHandler(
		map[string]oauthhandlers.AuthenticationChallenger{"login": passwordchallenger.NewBasicAuthChallenger("openshift")}, nil, nil)

	storage := registrystorage.New(accessTokenRegistry, authorizeTokenRegistry, clientRegistry, oauthregistry.NewUserConversion())
	config := osinserver.NewDefaultServerConfig()

	grantChecker := oauthregistry.NewClientAuthorizationGrantChecker(clientAuthRegistry)
	grantHandler := oauthhandlers.NewAutoGrant()

	server := osinserver.New(
		config,
		storage,
		osinserver.AuthorizeHandlers{
			oauthhandlers.NewAuthorizeAuthenticator(
				authRequestHandler,
				authHandler,
				oauthhandlers.EmptyError{},
			),
			oauthhandlers.NewGrantCheck(
				grantChecker,
				grantHandler,
				oauthhandlers.EmptyError{},
			),
		},
		osinserver.AccessHandlers{
			oauthhandlers.NewDenyAccessAuthenticator(),
		},
		osinserver.NewDefaultErrorHandler(),
	)
	mux := http.NewServeMux()
	server.Install(mux, origin.OpenShiftOAuthAPIPrefix)
	oauthServer := httptest.NewServer(http.Handler(mux))
	defer oauthServer.Close()
	t.Logf("oauth server is on %v\n", oauthServer.URL)

	// create the default oauth clients with redirects to our server
	origin.CreateOrUpdateDefaultOAuthClients(oauthServer.URL, []string{oauthServer.URL}, clientRegistry)

	flags := pflag.NewFlagSet("test-flags", pflag.ContinueOnError)
	clientCfg := clientcmd.NewConfig()
	clientCfg.Bind(flags)
	flags.Parse(strings.Split("--master="+oauthServer.URL, " "))

	reader := bytes.NewBufferString("user\npass")

	accessToken, err := tokencmd.RequestToken(clientCfg.OpenShiftConfig(), reader, "", "")

	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}
	if len(accessToken) == 0 {
		t.Error("Expected accessToken, but did not get one")
	}

	// lets see if this access token is any good
	token, err := accessTokenRegistry.GetAccessToken(kapi.NewContext(), accessToken)
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}
	if token.UserName != "user" {
		t.Errorf("Expected token for \"user\", but got: %#v", token)
	}
}
func TestAuthProxyOnAuthorize(t *testing.T) {
	testutil.DeleteAllEtcdKeys()

	// setup
	etcdClient := testutil.NewEtcdClient()
	etcdHelper, _ := master.NewEtcdHelper(etcdClient, latest.Version, etcdtest.PathPrefix())

	accessTokenStorage := accesstokenetcd.NewREST(etcdHelper)
	accessTokenRegistry := accesstokenregistry.NewRegistry(accessTokenStorage)
	authorizeTokenStorage := authorizetokenetcd.NewREST(etcdHelper)
	authorizeTokenRegistry := authorizetokenregistry.NewRegistry(authorizeTokenStorage)
	clientStorage := clientetcd.NewREST(etcdHelper)
	clientRegistry := clientregistry.NewRegistry(clientStorage)
	clientAuthStorage := clientauthetcd.NewREST(etcdHelper)
	clientAuthRegistry := clientauthregistry.NewRegistry(clientAuthStorage)

	userStorage := useretcd.NewREST(etcdHelper)
	userRegistry := userregistry.NewRegistry(userStorage)
	identityStorage := identityetcd.NewREST(etcdHelper)
	identityRegistry := identityregistry.NewRegistry(identityStorage)

	identityMapper := identitymapper.NewAlwaysCreateUserIdentityToUserMapper(identityRegistry, userRegistry)

	// this auth request handler is the one that is supposed to recognize information from a front proxy
	authRequestHandler := headerrequest.NewAuthenticator("front-proxy-test", headerrequest.NewDefaultConfig(), identityMapper)
	authHandler := &oauthhandlers.EmptyAuth{}

	storage := registrystorage.New(accessTokenRegistry, authorizeTokenRegistry, clientRegistry, oauthregistry.NewUserConversion())
	config := osinserver.NewDefaultServerConfig()

	grantChecker := oauthregistry.NewClientAuthorizationGrantChecker(clientAuthRegistry)
	grantHandler := oauthhandlers.NewAutoGrant()

	server := osinserver.New(
		config,
		storage,
		osinserver.AuthorizeHandlers{
			oauthhandlers.NewAuthorizeAuthenticator(
				authRequestHandler,
				authHandler,
				oauthhandlers.EmptyError{},
			),
			oauthhandlers.NewGrantCheck(
				grantChecker,
				grantHandler,
				oauthhandlers.EmptyError{},
			),
		},
		osinserver.AccessHandlers{
			oauthhandlers.NewDenyAccessAuthenticator(),
		},
		osinserver.NewDefaultErrorHandler(),
	)

	mux := http.NewServeMux()
	server.Install(mux, origin.OpenShiftOAuthAPIPrefix)
	oauthServer := httptest.NewServer(http.Handler(mux))
	defer oauthServer.Close()
	t.Logf("oauth server is on %v\n", oauthServer.URL)

	// set up a front proxy guarding the oauth server
	proxyHTTPHandler := NewBasicAuthChallenger("TestRegistryAndServer", validUsers, NewXRemoteUserProxyingHandler(oauthServer.URL))
	proxyServer := httptest.NewServer(proxyHTTPHandler)
	defer proxyServer.Close()
	t.Logf("proxy server is on %v\n", proxyServer.URL)

	// need to prime clients so that we can get back a code.  the client must be valid
	createClient(t, clientRegistry, &oauthapi.OAuthClient{ObjectMeta: kapi.ObjectMeta{Name: "test"}, Secret: "secret", RedirectURIs: []string{oauthServer.URL}})

	// our simple URL to get back a code.  We want to go through the front proxy
	rawAuthorizeRequest := proxyServer.URL + origin.OpenShiftOAuthAPIPrefix + "/authorize?response_type=code&client_id=test"

	// the first request we make to the front proxy should challenge us for authentication info
	shouldBeAChallengeResponse, err := http.Get(rawAuthorizeRequest)
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}
	if shouldBeAChallengeResponse.StatusCode != http.StatusUnauthorized {
		t.Errorf("Expected Unauthorized, but got %v", shouldBeAChallengeResponse.StatusCode)
	}

	// create an http.Client to make our next request.  We need a custom Transport to authenticate us through our front proxy
	// and a custom CheckRedirect so that we can keep track of the redirect responses we're getting
	// OAuth requests a few redirects that we don't really care about checking, so this simpler than using a round tripper
	// and manually handling redirects and setting our auth information every time for the front proxy
	redirectedUrls := make([]url.URL, 10)
	httpClient := http.Client{
		CheckRedirect: getRedirectMethod(t, &redirectedUrls),
		Transport:     kclient.NewBasicAuthRoundTripper("sanefarmer", "who?", http.DefaultTransport),
	}

	// make our authorize request again, but this time our transport has properly set the auth info for the front proxy
	req, err := http.NewRequest("GET", rawAuthorizeRequest, nil)
	_, err = httpClient.Do(req)
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	// check the last redirect and see if we got a code
	foundCode := ""
	if len(redirectedUrls) > 0 {
		foundCode = redirectedUrls[len(redirectedUrls)-1].Query().Get("code")
	}

	if len(foundCode) == 0 {
		t.Errorf("Did not find code in any redirect: %v", redirectedUrls)
	} else {
		t.Logf("Found code %v\n", foundCode)
	}
}
func TestUserInitialization(t *testing.T) {

	masterConfig, clusterAdminKubeConfig, err := testutil.StartTestMaster()
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	clusterAdminClient, err := testutil.GetClusterAdminClient(clusterAdminKubeConfig)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	etcdClient, err := etcd.GetAndTestEtcdClient(masterConfig.EtcdClientInfo)
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	etcdHelper, err := origin.NewEtcdHelper(etcdClient, masterConfig.EtcdStorageConfig.OpenShiftStorageVersion, masterConfig.EtcdStorageConfig.OpenShiftStoragePrefix)
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	userRegistry := userregistry.NewRegistry(useretcd.NewREST(etcdHelper))
	identityRegistry := identityregistry.NewRegistry(identityetcd.NewREST(etcdHelper))
	useridentityMappingRegistry := useridentitymapping.NewRegistry(useridentitymapping.NewREST(userRegistry, identityRegistry))

	lookup := identitymapper.NewLookupIdentityMapper(useridentityMappingRegistry, userRegistry)
	provisioner := identitymapper.NewAlwaysCreateUserIdentityToUserMapper(identityRegistry, userRegistry)

	testcases := map[string]struct {
		Identity authapi.UserIdentityInfo
		Mapper   authapi.UserIdentityMapper

		CreateIdentity *api.Identity
		CreateUser     *api.User
		CreateMapping  *api.UserIdentityMapping
		UpdateUser     *api.User

		ExpectedErr      error
		ExpectedUserName string
		ExpectedFullName string
	}{
		"lookup missing identity": {
			Identity: makeIdentityInfo("idp", "bob", nil),
			Mapper:   lookup,

			ExpectedErr: kerrs.NewNotFound("UserIdentityMapping", "idp:bob"),
		},
		"lookup existing identity": {
			Identity: makeIdentityInfo("idp", "bob", nil),
			Mapper:   lookup,

			CreateUser:     makeUser("mappeduser"),
			CreateIdentity: makeIdentity("idp", "bob"),
			CreateMapping:  makeMapping("mappeduser", "idp:bob"),

			ExpectedUserName: "******",
		},
		"provision missing identity and user": {
			Identity: makeIdentityInfo("idp", "bob", nil),
			Mapper:   provisioner,

			ExpectedUserName: "******",
		},
		"provision missing identity and user with preferred username and display name": {
			Identity: makeIdentityInfo("idp", "bob", map[string]string{authapi.IdentityDisplayNameKey: "Bob, Sr.", authapi.IdentityPreferredUsernameKey: "admin"}),
			Mapper:   provisioner,

			ExpectedUserName: "******",
			ExpectedFullName: "Bob, Sr.",
		},
		"provision missing identity for existing user": {
			Identity: makeIdentityInfo("idp", "bob", nil),
			Mapper:   provisioner,

			CreateUser: makeUser("bob", "idp:bob"),

			ExpectedUserName: "******",
		},
		"provision missing identity with conflicting user": {
			Identity: makeIdentityInfo("idp", "bob", nil),
			Mapper:   provisioner,

			CreateUser: makeUser("bob"),

			ExpectedUserName: "******",
		},
		"provision missing identity with conflicting user and preferred username": {
			Identity: makeIdentityInfo("idp", "bob", map[string]string{authapi.IdentityPreferredUsernameKey: "admin"}),
			Mapper:   provisioner,

			CreateUser: makeUser("admin"),

			ExpectedUserName: "******",
		},
		"provision with existing unmapped identity": {
			Identity: makeIdentityInfo("idp", "bob", nil),
			Mapper:   provisioner,

			CreateIdentity: makeIdentity("idp", "bob"),

			ExpectedErr: kerrs.NewNotFound("UserIdentityMapping", "idp:bob"),
		},
		"provision with existing mapped identity with invalid user UID": {
			Identity: makeIdentityInfo("idp", "bob", nil),
			Mapper:   provisioner,

			CreateUser:     makeUser("mappeduser"),
			CreateIdentity: makeIdentityWithUserReference("idp", "bob", "mappeduser", "invalidUID"),

			ExpectedErr: kerrs.NewNotFound("UserIdentityMapping", "idp:bob"),
		},
		"provision with existing mapped identity without user backreference": {
			Identity: makeIdentityInfo("idp", "bob", nil),
			Mapper:   provisioner,

			CreateUser:     makeUser("mappeduser"),
			CreateIdentity: makeIdentity("idp", "bob"),
			CreateMapping:  makeMapping("mappeduser", "idp:bob"),
			// Update user to a version which does not reference the identity
			UpdateUser: makeUser("mappeduser"),

			ExpectedErr: kerrs.NewNotFound("UserIdentityMapping", "idp:bob"),
		},
		"provision returns existing mapping": {
			Identity: makeIdentityInfo("idp", "bob", nil),
			Mapper:   provisioner,

			CreateUser:     makeUser("mappeduser"),
			CreateIdentity: makeIdentity("idp", "bob"),
			CreateMapping:  makeMapping("mappeduser", "idp:bob"),

			ExpectedUserName: "******",
		},
	}

	for k, testcase := range testcases {
		// Cleanup
		if err := etcdHelper.Delete(useretcd.EtcdPrefix, true); err != nil && !tools.IsEtcdNotFound(err) {
			t.Fatalf("Could not clean up users: %v", err)
		}
		if err := etcdHelper.Delete(identityetcd.EtcdPrefix, true); err != nil && !tools.IsEtcdNotFound(err) {
			t.Fatalf("Could not clean up identities: %v", err)
		}

		// Pre-create items
		if testcase.CreateUser != nil {
			_, err := clusterAdminClient.Users().Create(testcase.CreateUser)
			if err != nil {
				t.Errorf("%s: Could not create user: %v", k, err)
				continue
			}
		}
		if testcase.CreateIdentity != nil {
			_, err := clusterAdminClient.Identities().Create(testcase.CreateIdentity)
			if err != nil {
				t.Errorf("%s: Could not create identity: %v", k, err)
				continue
			}
		}
		if testcase.CreateMapping != nil {
			_, err := clusterAdminClient.UserIdentityMappings().Update(testcase.CreateMapping)
			if err != nil {
				t.Errorf("%s: Could not create mapping: %v", k, err)
				continue
			}
		}
		if testcase.UpdateUser != nil {
			if testcase.UpdateUser.ResourceVersion == "" {
				existingUser, err := clusterAdminClient.Users().Get(testcase.UpdateUser.Name)
				if err != nil {
					t.Errorf("%s: Could not get user to update: %v", k, err)
					continue
				}
				testcase.UpdateUser.ResourceVersion = existingUser.ResourceVersion
			}
			_, err := clusterAdminClient.Users().Update(testcase.UpdateUser)
			if err != nil {
				t.Errorf("%s: Could not update user: %v", k, err)
				continue
			}
		}

		// Spawn 5 simultaneous mappers to test race conditions
		var wg sync.WaitGroup
		for i := 0; i < 5; i++ {
			wg.Add(1)
			go func() {
				defer wg.Done()

				userInfo, err := testcase.Mapper.UserFor(testcase.Identity)
				if err != nil {
					if testcase.ExpectedErr == nil {
						t.Errorf("%s: Expected success, got error '%v'", k, err)
					} else if err.Error() != testcase.ExpectedErr.Error() {
						t.Errorf("%s: Expected error %v, got '%v'", k, testcase.ExpectedErr.Error(), err)
					}
					return
				}
				if err == nil && testcase.ExpectedErr != nil {
					t.Errorf("%s: Expected error '%v', got none", k, testcase.ExpectedErr)
					return
				}

				if userInfo.GetName() != testcase.ExpectedUserName {
					t.Errorf("%s: Expected username %s, got %s", k, testcase.ExpectedUserName, userInfo.GetName())
					return
				}

				user, err := clusterAdminClient.Users().Get(userInfo.GetName())
				if err != nil {
					t.Errorf("%s: Error getting user: %v", k, err)
				}
				if user.FullName != testcase.ExpectedFullName {
					t.Errorf("%s: Expected full name %s, got %s", k, testcase.ExpectedFullName, user.FullName)
				}

			}()
		}
		wg.Wait()
	}
}
Example #6
0
func (c *AuthConfig) getAuthenticationHandler(mux cmdutil.Mux, errorHandler handlers.AuthenticationErrorHandler) (handlers.AuthenticationHandler, error) {
	challengers := map[string]handlers.AuthenticationChallenger{}
	redirectors := map[string]handlers.AuthenticationRedirector{}

	for _, identityProvider := range c.Options.IdentityProviders {
		identityMapper := identitymapper.NewAlwaysCreateUserIdentityToUserMapper(c.IdentityRegistry, c.UserRegistry)

		if configapi.IsPasswordAuthenticator(identityProvider) {
			if identityProvider.UseAsLogin {
				if c.OpenshiftEnabled {
					passwordAuth, err := c.getPasswordAuthenticator(identityProvider)
					if err != nil {
						return nil, err
					}
					//map[string]handlers.AuthenticationRedirector
					// Password auth requires:
					// 1. a session success handler (to remember you logged in)
					// 2. a redirectSuccessHandler (to go back to the "then" param)
					if c.SessionAuth == nil {
						return nil, errors.New("SessionAuth is required for password-based login")
					}
					passwordSuccessHandler := handlers.AuthenticationSuccessHandlers{c.SessionAuth, redirectSuccessHandler{}}

					redirectors["login"] = &redirector{RedirectURL: OpenShiftLoginPrefix, ThenParam: "then"}
					login := login.NewLogin(c.getCSRF(), &callbackPasswordAuthenticator{passwordAuth, passwordSuccessHandler}, login.DefaultLoginFormRenderer)
					login.Install(mux, OpenShiftLoginPrefix)
				}

			}
			if identityProvider.UseAsChallenger {
				challengers["login"] = passwordchallenger.NewBasicAuthChallenger("openshift")
			}

		} else if configapi.IsOAuthIdentityProvider(identityProvider) {
			oauthProvider, err := c.getOAuthProvider(identityProvider)
			if err != nil {
				return nil, err
			}

			// Default state builder, combining CSRF and return URL handling
			state := external.CSRFRedirectingState(c.getCSRF())

			// OAuth auth requires
			// 1. a session success handler (to remember you logged in)
			// 2. a state success handler (to go back to the URL encoded in the state)
			if c.SessionAuth == nil {
				return nil, errors.New("SessionAuth is required for OAuth-based login")
			}
			oauthSuccessHandler := handlers.AuthenticationSuccessHandlers{c.SessionAuth, state}

			// If the specified errorHandler doesn't handle the login error, let the state error handler attempt to propagate specific errors back to the token requester
			oauthErrorHandler := handlers.AuthenticationErrorHandlers{errorHandler, state}

			callbackPath := path.Join(OpenShiftOAuthCallbackPrefix, identityProvider.Name)
			oauthHandler, err := external.NewExternalOAuthRedirector(oauthProvider, state, c.Options.MasterPublicURL+callbackPath, oauthSuccessHandler, oauthErrorHandler, identityMapper)
			if err != nil {
				return nil, fmt.Errorf("unexpected error: %v", err)
			}

			mux.Handle(callbackPath, oauthHandler)
			if identityProvider.UseAsLogin {
				redirectors[identityProvider.Name] = oauthHandler
			}
			if identityProvider.UseAsChallenger {
				return nil, errors.New("oauth identity providers cannot issue challenges")
			}
		}
	}

	if len(redirectors) > 0 && len(challengers) == 0 {
		// Add a default challenger that will warn and give a link to the web browser token-granting location
		challengers["placeholder"] = placeholderchallenger.New(OpenShiftOAuthTokenRequestURL(c.Options.MasterPublicURL))
	}

	authHandler := handlers.NewUnionAuthenticationHandler(challengers, redirectors, errorHandler)
	return authHandler, nil
}