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