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- /*
- * @copyright 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @author 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
- import $ from 'jquery'
- import { emit } from '@nextcloud/event-bus'
-
- import { generateUrl } from './OC/routing'
- import OC from './OC'
- import { setToken as setRequestToken } from './OC/requesttoken'
-
- /**
- * session heartbeat (defaults to enabled)
- * @returns {boolean}
- */
- const keepSessionAlive = () => {
- return OC.config.session_keepalive === undefined
- || !!OC.config.session_keepalive
- }
-
- /**
- * get interval in seconds
- * @returns {Number}
- */
- const getInterval = () => {
- let interval = NaN
- if (OC.config.session_lifetime) {
- interval = Math.floor(OC.config.session_lifetime / 2)
- }
-
- // minimum one minute, max 24 hours, default 15 minutes
- return Math.min(
- 24 * 3600,
- Math.max(
- 60,
- isNaN(interval) ? 900 : interval
- )
- )
- }
-
- const getToken = async() => {
- const url = generateUrl('/csrftoken')
-
- // Not using Axios here as Axios is not stubbable with the sinon fake server
- // see https://stackoverflow.com/questions/41516044/sinon-mocha-test-with-async-ajax-calls-didnt-return-promises
- // see js/tests/specs/coreSpec.js for the tests
- const resp = await $.get(url)
-
- return resp.token
- }
-
- const poll = async() => {
- try {
- const token = await getToken()
- setRequestToken(token)
- } catch (e) {
- console.error('session heartbeat failed', e)
- }
- }
-
- const startPolling = () => {
- const interval = setInterval(poll, getInterval() * 1000)
-
- console.info('session heartbeat polling started')
-
- return interval
- }
-
- /**
- * Calls the server periodically to ensure that session and CSRF
- * token doesn't expire
- */
- export const initSessionHeartBeat = () => {
- if (!keepSessionAlive()) {
- console.info('session heartbeat disabled')
- return
- }
- let interval = startPolling()
-
- window.addEventListener('online', async() => {
- console.info('browser is online again, resuming heartbeat')
- interval = startPolling()
- try {
- await poll()
- console.info('session token successfully updated after resuming network')
-
- // Let apps know we're online and requests will have the new token
- emit('networkOnline', {
- success: true,
- })
- } catch (e) {
- console.error('could not update session token after resuming network', e)
-
- // Let apps know we're online but requests might have an outdated token
- emit('networkOnline', {
- success: false,
- })
- }
- })
- window.addEventListener('offline', () => {
- console.info('browser is offline, stopping heartbeat')
-
- // Let apps know we're offline
- emit('networkOffline', {})
-
- clearInterval(interval)
- console.info('session heartbeat polling stopped')
- })
- }
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