const ical = require('ical.js') const settingsController = require('./api/controller/settings') const acceptLanguage = require('accept-language') const express = require('express') const dayjs = require('dayjs') const config = require('./config') const log = require('./log') const pkg = require('../package.json') const path = require('path') const sharp = require('sharp') const axios = require('axios') const crypto = require('crypto') const Microformats = require('microformat-node') const get = require('lodash/get') const cloneDeep = require('lodash/cloneDeep') const DOMPurify = require('dompurify') const { JSDOM } = require('jsdom') const { window } = new JSDOM('') const domPurify = DOMPurify(window) const url = require('url') const locales = require('../locales') domPurify.addHook('beforeSanitizeElements', node => { if (node.hasAttribute && node.hasAttribute('href')) { const href = node.getAttribute('href') const text = node.textContent // remove FB tracking param if (href.includes('fbclid=')) { try { const url = new url.URL(href) url.searchParams.delete('fbclid') node.setAttribute('href', url.href) if (text.includes('fbclid=')) { node.textContent = url.href } } catch (e) { return node } } } return node }) module.exports = { randomString (length = 12) { const wishlist = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz' return Array.from(crypto.randomFillSync(new Uint32Array(length))) .map(x => wishlist[x % wishlist.length]) .join('') }, sanitizeHTML (html) { return domPurify.sanitize(html, { ALLOWED_TAGS: ['p', 'h1', 'h2', 'h3', 'h4', 'h5', 'br', 'i', 'span', 'h6', 'b', 'a', 'li', 'ul', 'ol', 'code', 'blockquote', 'u', 's', 'strong'], ALLOWED_ATTR: ['href', 'target'] }) }, async setUserLocale (req, res, next) { // select locale based on cookie? and accept-language header acceptLanguage.languages(Object.keys(locales)) res.locals.acceptedLocale = acceptLanguage.get(req.headers['accept-language']) dayjs.locale(res.locals.acceptedLocale) next() }, async initSettings (_req, res, next) { // initialize settings res.locals.settings = cloneDeep(settingsController.settings) delete res.locals.settings.smtp delete res.locals.settings.publicKey res.locals.settings.baseurl = config.baseurl res.locals.settings.hostname = config.hostname res.locals.settings.title = res.locals.settings.title || config.title res.locals.settings.description = res.locals.settings.description || config.description res.locals.settings.version = pkg.version // set user locale res.locals.user_locale = settingsController.user_locale[res.locals.acceptedLocale] next() }, serveStatic () { const router = express.Router() // serve images/thumb router.use('/media/', express.static(config.upload_path, { immutable: true, maxAge: '1y' } ), (_req, res) => res.sendStatus(404)) router.use('/noimg.svg', express.static('./static/noimg.svg')) router.use('/logo.png', (req, res, next) => { const logoPath = res.locals.settings.logo || './static/gancio' return express.static(logoPath + '.png')(req, res, next) }) router.use('/favicon.ico', (req, res, next) => { const faviconPath = res.locals.settings.logo ? res.locals.settings.logo + '.png' : './assets/favicon.ico' return express.static(faviconPath)(req, res, next) }) return router }, logRequest (req, _res, next) { log.debug(`${req.method} ${req.path}`) next() }, col (field) { if (config.db.dialect === 'postgres') { return '"' + field.split('.').join('"."') + '"' } else if (config.db.dialect === 'mariadb') { return '`' + field.split('.').join('`.`') + '`' } else { return field } }, async getImageFromURL (url) { log.debug(`getImageFromURL ${url}`) if(!/^https?:\/\//.test(url)) { throw Error('Hacking attempt?') } const filename = crypto.randomBytes(16).toString('hex') const sharpStream = sharp({ failOnError: true }) const promises = [ sharpStream.clone().resize(500, null, { withoutEnlargement: true }).jpeg({ effort: 6, mozjpeg: true }).toFile(path.resolve(config.upload_path, 'thumb', filename + '.jpg')), sharpStream.clone().resize(1200, null, { withoutEnlargement: true } ).jpeg({ quality: 95, effort: 6, mozjpeg: true}).toFile(path.resolve(config.upload_path, filename + '.jpg')), ] const response = await axios({ method: 'GET', url: encodeURI(url), responseType: 'stream' }) response.data.pipe(sharpStream) return Promise.all(promises) .then(res => { const info = res[1] return { destination: config.upload_path, filename: filename + '.jpg', path: path.resolve(config.upload_path, filename + '.jpg'), height: info.height, width: info.width, size: info.size, } }) .catch(err => { log.error(err) req.err = err cb(null) }) }, /** * Import events from url * It does supports ICS and H-EVENT */ async importURL (req, res) { const URL = req.query.URL try { const response = await axios.get(URL) const contentType = response.headers['content-type'] if (contentType.includes('text/html')) { Microformats.get({ html: response.data, filter: ['h-event'] }, (err, data) => { if (err || !data.items.length || !data.items[0].properties) { return res.sendStatus(404) } const events = data.items.map(e => { const props = e.properties let media = get(props, 'featured[0]') if (media) { media = url.resolve(URL, media) } return { title: get(props, 'name[0]', ''), description: get(props, 'description[0]', ''), place: { name: get(props, 'location[0].properties.name[0].value', '') || get(props, 'location[0].properties.name', '') || get(props, 'location[0]'), address: get(props, 'location[0].properties.street-address[0]') || get(props, 'location[0].properties.street-address') }, start_datetime: dayjs(get(props, 'start[0]', '')).unix(), end_datetime: dayjs(get(props, 'end[0]', '')).unix(), tags: get(props, 'category', []), media: media ? [{ name: get(props, 'name[0]', ''), url: media, focalpoint: [0, 0] }] : [] } }) return res.json(events) }) } else if (contentType.includes('text/calendar')) { const ret = ical.parse(response.data) const component = new ical.Component(ret) const events = component.getAllSubcomponents('vevent') return res.json(events.map(e => { const event = new ical.Event(e) return { title: get(event, 'summary', ''), description: get(event, 'description', ''), place: { name: get(event, 'location', '') }, start_datetime: dayjs(get(event, 'startDate', null)).unix(), end_datetime: dayjs(get(event, 'endDate', null)).unix() } })) } } catch (e) { log.error('[Import URL]', e) res.status(400).json(e.toString()) } }, getWeekdayN (date, n, weekday) { let cursor if (n === -1) { cursor = date.endOf('month') cursor = cursor.day(weekday) if (cursor.month() !== date.month()) { cursor = cursor.subtract(1, 'week') } } else { cursor = date.startOf('month') cursor = cursor.add(cursor.day() <= date.day() ? n - 1 : n, 'week') cursor = cursor.day(weekday) } cursor = cursor.hour(date.hour()).minute(date.minute()).second(0) log.debug(cursor) return cursor }, async APRedirect (req, res, next) { const acceptJson = req.accepts('html', 'application/activity+json') === 'application/activity+json' if (acceptJson) { const eventController = require('../server/api/controller/event') const event = await eventController._get(req.params.slug) if (event) { return res.redirect(`/federation/m/${event.id}`) } } next() }, async feedRedirect (req, res, next) { const accepted = req.accepts('html', 'application/rss+xml', 'text/calendar') if (['application/rss+xml', 'text/calendar'].includes(accepted) && /^\/(tag|place|collection)\/.*/.test(req.path)) { return res.redirect((accepted === 'application/rss+xml' ? '/feed/rss' : '/feed/ics') + req.path) } next() } }