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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 { loadState } from '@nextcloud/initial-state'
import { getCurrentUser } from '@nextcloud/auth'
import { generateUrl } from '@nextcloud/router'
import OC from './OC'
import { setToken as setRequestToken, getToken as getRequestToken } from './OC/requesttoken'
let config = null
/**
* The legacy jsunit tests overwrite OC.config before calling initCore
* therefore we need to wait with assigning the config fallback until initCore calls initSessionHeartBeat
*/
const loadConfig = () => {
try {
config = loadState('core', 'config')
} catch (e) {
// This fallback is just for our legacy jsunit tests since we have no way to mock loadState calls
config = OC.config
}
}
/**
* session heartbeat (defaults to enabled)
* @returns {boolean}
*/
const keepSessionAlive = () => {
return config.session_keepalive === undefined
|| !!config.session_keepalive
}
/**
* get interval in seconds
* @returns {Number}
*/
const getInterval = () => {
let interval = NaN
if (config.session_lifetime) {
interval = Math.floor(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
}
const registerAutoLogout = () => {
if (!config.auto_logout || !getCurrentUser()) {
return
}
let lastActive = Date.now()
window.addEventListener('mousemove', e => {
lastActive = Date.now()
localStorage.setItem('lastActive', lastActive)
})
window.addEventListener('touchstart', e => {
lastActive = Date.now()
localStorage.setItem('lastActive', lastActive)
})
window.addEventListener('storage', e => {
if (e.key !== 'lastActive') {
return
}
lastActive = e.newValue
})
setInterval(function() {
const timeout = Date.now() - config.session_lifetime * 1000
if (lastActive < timeout) {
console.info('Inactivity timout reached, logging out')
const logoutUrl = generateUrl('/logout') + '?requesttoken=' + getRequestToken()
window.location = logoutUrl
}
}, 1000)
}
/**
* Calls the server periodically to ensure that session and CSRF
* token doesn't expire
*/
export const initSessionHeartBeat = () => {
loadConfig()
registerAutoLogout()
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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