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* chore(middleware): Adds appBaseUrl, removes redirect_uri BREAKING CHANGE: Configurations now require appBaseUrl. redirect_uri is deprecated * feat(middleware): Adds Okta logout BREAKING CHANGE: adds POST-based /logout and /logout/callback routes that will override existing matching routes defined by the user (if any). See `Upgrading` in the README for more info.
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| Original file line number | Diff line number | Diff line change |
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| /*! | ||
| * Copyright (c) 2019-Present, Okta, Inc. and/or its affiliates. All rights reserved. | ||
| * The Okta software accompanied by this notice is provided pursuant to the Apache License, Version 2.0 (the "License.") | ||
| * | ||
| * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0. | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT | ||
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * | ||
| * See the License for the specific language governing permissions and limitations under the License. | ||
| */ | ||
| const fetch = require('node-fetch'); | ||
| const querystring = require('querystring'); | ||
| const uuid = require('uuid'); | ||
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| const logout = module.exports; | ||
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| const makeErrorHandler = emitter => err => { | ||
| if (err.type) { | ||
| emitter.emit('error', `${err.type} - ${err.text}`); | ||
| } else { | ||
| emitter.emit('error', err); | ||
| } | ||
| }; | ||
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| const makeAuthorizationHeader = ({ client_id, client_secret }) => | ||
| 'Basic ' + Buffer.from(`${client_id}:${client_secret}`).toString('base64'); | ||
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| const makeTokenRevoker = ({ issuer, client_id, client_secret, errorHandler }) => { | ||
| const revokeEndpoint = `${issuer}/v1/revoke`; | ||
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| return ({ token_hint, token }) => { | ||
| return fetch(revokeEndpoint, { | ||
| method: 'POST', | ||
| headers: { | ||
| 'accepts': 'application/json', | ||
| 'content-type': 'application/x-www-form-urlencoded', | ||
| 'authorization': makeAuthorizationHeader({ client_id, client_secret }), | ||
| }, | ||
| body: querystring.stringify({token, token_type_hint: token_hint}), | ||
| }) | ||
| .then( r => r.ok ? r : r.text().then( e => Promise.reject({type: 'revokeError', message: e}) )) | ||
| .catch( errorHandler ); // catch and emit - this promise chain can never fail | ||
| }; | ||
| }; | ||
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| logout.forceLogoutAndRevoke = context => { | ||
| const emitter = context.emitter; | ||
| const { issuer, client_id, client_secret } = context.options; | ||
| const REVOKABLE_TOKENS = ['refresh_token', 'access_token']; | ||
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| const revokeToken = makeTokenRevoker({ issuer, client_id, client_secret, errorHandler: makeErrorHandler(emitter) }); | ||
| return async (req, res, next) => { | ||
| const tokens = req.userContext.tokens; | ||
| const revokeIfExists = token_hint => tokens[token_hint] ? revokeToken({token_hint, token: tokens[token_hint]}) : null; | ||
| const revokes = REVOKABLE_TOKENS.map( revokeIfExists ); | ||
| // attempt all revokes before logout | ||
| await Promise.all(revokes); // these capture (emit) all rejections, no wrapping catch needed, no early fail of .all() | ||
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| const state = uuid.v4(); | ||
| const params = { | ||
| state, | ||
| id_token_hint: tokens.id_token, | ||
| post_logout_redirect_uri: context.options.logoutRedirectUri, | ||
| }; | ||
| req.session[context.options.sessionKey] = { state }; | ||
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| const endOktaSessionEndpoint = `${context.options.issuer}/v1/logout?${querystring.stringify(params)}`; | ||
| return res.redirect(endOktaSessionEndpoint); | ||
| }; | ||
| }; | ||
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