439 lines
14 KiB
JavaScript
439 lines
14 KiB
JavaScript
const logger = require('./logger')
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// Stray errors and exceptions capturers
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process.on('uncaughtException', error => {
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logger.error(error, { prefix: 'Uncaught Exception: ' })
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})
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process.on('unhandledRejection', error => {
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logger.error(error, { prefix: 'Unhandled Rejection (Promise): ' })
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})
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// Require libraries
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const bodyParser = require('body-parser')
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const contentDisposition = require('content-disposition')
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const express = require('express')
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const helmet = require('helmet')
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const NodeClam = require('clamscan')
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const nunjucks = require('nunjucks')
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const path = require('path')
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const rateLimit = require('express-rate-limit')
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const { accessSync, constants } = require('fs')
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// Check required config files
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const configFiles = ['config.js', 'views/_globals.njk']
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for (const file of configFiles) {
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try {
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accessSync(file, constants.R_OK)
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} catch (error) {
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logger.error(`Config file '${file}' cannot be found or read.`)
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logger.error('Please copy the provided sample file and modify it according to your needs.')
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process.exit(1)
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}
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}
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// Require config files
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const config = require('./config')
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const versions = require('./src/versions')
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// lolisafe
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logger.log('Starting lolisafe\u2026')
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const safe = express()
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const paths = require('./controllers/pathsController')
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const utils = require('./controllers/utilsController')
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const album = require('./routes/album')
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const api = require('./routes/api')
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const nojs = require('./routes/nojs')
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const player = require('./routes/player')
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const isDevMode = process.env.NODE_ENV === 'development'
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// Helmet security headers
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if (config.helmet instanceof Object) {
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// If an empty object, simply do not use Helmet
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if (Object.keys(config.helmet).length) {
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safe.use(helmet(config.helmet))
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}
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} else {
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// Fallback to old behavior when the whole helmet option was not configurable from the config file
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const defaults = {
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contentSecurityPolicy: false,
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crossOriginEmbedderPolicy: false,
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crossOriginOpenerPolicy: false,
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crossOriginResourcePolicy: false,
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hsts: false,
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originAgentCluster: false
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}
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if (config.hsts instanceof Object && Object.keys(config.hsts).length) {
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defaults.hsts = config.hsts
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}
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safe.use(helmet(defaults))
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}
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// Access-Control-Allow-Origin
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if (config.accessControlAllowOrigin) {
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if (config.accessControlAllowOrigin === true) {
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config.accessControlAllowOrigin = '*'
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}
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safe.use((req, res, next) => {
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res.set('Access-Control-Allow-Origin', config.accessControlAllowOrigin)
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if (config.accessControlAllowOrigin !== '*') {
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res.vary('Origin')
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}
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next()
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})
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}
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if (config.trustProxy) {
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safe.set('trust proxy', 1)
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}
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// https://mozilla.github.io/nunjucks/api.html#configure
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nunjucks.configure('views', {
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autoescape: true,
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express: safe,
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watch: isDevMode
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// noCache: isDevMode
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})
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safe.set('view engine', 'njk')
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safe.enable('view cache')
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// Configure rate limits (disabled during development)
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if (!isDevMode && Array.isArray(config.rateLimits) && config.rateLimits.length) {
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for (const _rateLimit of config.rateLimits) {
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const limiter = rateLimit(_rateLimit.config)
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for (const route of _rateLimit.routes) {
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safe.use(route, limiter)
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}
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}
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}
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safe.use(bodyParser.urlencoded({ extended: true }))
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safe.use(bodyParser.json())
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const cdnPages = [...config.pages]
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let setHeaders
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const contentTypes = config.overrideContentTypes && Object.keys(config.overrideContentTypes)
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const overrideContentTypes = (res, path) => {
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// Do only if accessing files from uploads' root directory (i.e. not thumbs, etc.)
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const relpath = path.replace(paths.uploads, '')
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if (relpath.indexOf('/', 1) === -1) {
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const name = relpath.substring(1)
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const extname = utils.extname(name).substring(1)
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for (const contentType of contentTypes) {
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if (config.overrideContentTypes[contentType].includes(extname)) {
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res.set('Content-Type', contentType)
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break
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}
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}
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}
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}
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const initServeStaticUploads = (opts = {}) => {
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if (config.setContentDisposition) {
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opts.preSetHeaders = async (res, req, path, stat) => {
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try {
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// Do only if accessing files from uploads' root directory (i.e. not thumbs, etc.)
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// and only if they are GET requests
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const relpath = path.replace(paths.uploads, '')
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if (relpath.indexOf('/', 1) === -1 && req.method === 'GET') {
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const name = relpath.substring(1)
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const file = await utils.db.table('files')
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.where('name', name)
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.select('original')
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.first()
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res.set('Content-Disposition', contentDisposition(file.original, { type: 'inline' }))
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}
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} catch (error) {
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logger.error(error)
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}
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}
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// serveStatic is provided with @bobbywibowo/serve-static, a fork of express/serve-static.
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// The fork allows specifying an async setHeaders function by the name preSetHeaders.
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// It will await the said function before creating 'send' stream to client.
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safe.use('/', require('@bobbywibowo/serve-static')(paths.uploads, opts))
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} else {
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safe.use('/', express.static(paths.uploads, opts))
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}
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}
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// Cache control (safe.fiery.me)
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if (config.cacheControl) {
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const cacheControls = {
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// max-age: 6 months
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static: 'public, max-age=15778800, immutable',
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// s-max-age: 6 months (only cache in CDN)
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cdn: 's-max-age=15778800, proxy-revalidate',
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// validate cache's validity before using them (soft cache)
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validate: 'no-cache',
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// do not use cache at all
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disable: 'no-store'
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}
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// By default soft cache everything
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safe.use('/', (req, res, next) => {
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res.set('Cache-Control', cacheControls.validate)
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next()
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})
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// If using CDN, cache public pages in CDN
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if (config.cacheControl !== 2) {
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cdnPages.push('api/check')
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for (const page of cdnPages) {
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safe.use(`/${page === 'home' ? '' : page}`, (req, res, next) => {
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res.set('Cache-Control', cacheControls.cdn)
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next()
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})
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}
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}
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// If serving uploads with node
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if (config.serveFilesWithNode) {
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initServeStaticUploads({
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setHeaders: (res, path) => {
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// Override Content-Type if necessary
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if (contentTypes && contentTypes.length) {
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overrideContentTypes(res, path)
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}
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// If using CDN, cache uploads in CDN as well
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// Use with cloudflare.purgeCache enabled in config file
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if (config.cacheControl !== 2) {
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res.set('Cache-Control', cacheControls.cdn)
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}
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}
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})
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}
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// Function for static assets.
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// This requires the assets to use version in their query string,
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// as they will be cached by clients for a very long time.
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setHeaders = res => {
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res.set('Cache-Control', cacheControls.static)
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}
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// Consider album ZIPs static as well, since they use version in their query string
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safe.use(['/api/album/zip'], (req, res, next) => {
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const versionString = parseInt(req.query.v)
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if (versionString > 0) {
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res.set('Cache-Control', cacheControls.static)
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} else {
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res.set('Cache-Control', cacheControls.disable)
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}
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next()
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})
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} else if (config.serveFilesWithNode) {
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initServeStaticUploads({
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setHeaders: (res, path) => {
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// Override Content-Type if necessary
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if (contentTypes && contentTypes.length) {
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overrideContentTypes(res, path)
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}
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}
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})
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}
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// Static assets
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safe.use('/', express.static(paths.public, { setHeaders }))
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safe.use('/', express.static(paths.dist, { setHeaders }))
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safe.use('/', album)
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safe.use('/', nojs)
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safe.use('/', player)
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safe.use('/api', api)
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;(async () => {
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try {
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// Init database
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await require('./database/db.js')(utils.db)
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// Verify paths, create missing ones, clean up temp ones
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await paths.init()
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if (!Array.isArray(config.pages) || !config.pages.length) {
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logger.error('Config file does not have any frontend pages enabled')
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process.exit(1)
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}
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// Re-map version strings if cache control is enabled (safe.fiery.me)
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utils.versionStrings = {}
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if (config.cacheControl) {
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for (const type in versions) {
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utils.versionStrings[type] = `?_=${versions[type]}`
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}
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if (versions['1']) {
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utils.clientVersion = versions['1']
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}
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}
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// Cookie Policy
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if (config.cookiePolicy) {
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config.pages.push('cookiepolicy')
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}
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// Check for custom pages, otherwise fallback to Nunjucks templates
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for (const page of config.pages) {
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const customPage = path.join(paths.customPages, `${page}.html`)
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if (!await paths.access(customPage).catch(() => true)) {
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safe.get(`/${page === 'home' ? '' : page}`, (req, res, next) => res.sendFile(customPage))
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} else if (page === 'home') {
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safe.get('/', (req, res, next) => res.render(page, {
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config,
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versions: utils.versionStrings,
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gitHash: utils.gitHash
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}))
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} else {
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safe.get(`/${page}`, (req, res, next) => res.render(page, {
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config,
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versions: utils.versionStrings
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}))
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}
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}
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// Error pages
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safe.use((req, res, next) => {
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if (!res.headersSent) {
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res.setHeader('Cache-Control', 'no-store')
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res.status(404).sendFile(path.join(paths.errorRoot, config.errorPages[404]))
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}
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})
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safe.use((error, req, res, next) => {
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logger.error(error)
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if (!res.headersSent) {
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res.setHeader('Cache-Control', 'no-store')
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res.status(500).sendFile(path.join(paths.errorRoot, config.errorPages[500]))
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}
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})
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// Git hash
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if (config.showGitHash) {
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utils.gitHash = await new Promise((resolve, reject) => {
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require('child_process').exec('git rev-parse HEAD', (error, stdout) => {
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if (error) return reject(error)
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resolve(stdout.replace(/\n$/, ''))
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})
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})
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logger.log(`Git commit: ${utils.gitHash}`)
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}
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// ClamAV scanner
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if (config.uploads.scan && config.uploads.scan.enabled) {
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if (!config.uploads.scan.clamOptions) {
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logger.error('Missing object config.uploads.scan.clamOptions (check config.sample.js)')
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process.exit(1)
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}
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utils.scan.instance = await new NodeClam().init(config.uploads.scan.clamOptions)
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utils.scan.version = await utils.scan.instance.getVersion().then(s => s.trim())
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logger.log(`Connection established with ${utils.scan.version}`)
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}
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// Cache file identifiers
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if (config.uploads.cacheFileIdentifiers) {
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utils.idSet = await utils.db.table('files')
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.select('name')
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.then(rows => {
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return new Set(rows.map(row => row.name.split('.')[0]))
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})
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logger.log(`Cached ${utils.idSet.size} file identifiers`)
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}
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// Binds Express to port
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await new Promise(resolve => safe.listen(config.port, () => resolve()))
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logger.log(`lolisafe started on port ${config.port}`)
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// Cache control (safe.fiery.me)
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// Purge Cloudflare cache
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if (config.cacheControl && config.cacheControl !== 2) {
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if (config.cloudflare.purgeCache) {
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logger.log('Cache control enabled, purging Cloudflare\'s cache...')
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const results = await utils.purgeCloudflareCache(cdnPages)
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let errored = false
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let succeeded = 0
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for (const result of results) {
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if (result.errors.length) {
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if (!errored) errored = true
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result.errors.forEach(error => logger.log(`[CF]: ${error}`))
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continue
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}
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succeeded += result.files.length
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}
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if (!errored) {
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logger.log(`Successfully purged ${succeeded} cache`)
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}
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} else {
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logger.log('Cache control enabled without Cloudflare\'s cache purging')
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}
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}
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// Initiate internal periodical check ups of temporary uploads if required
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if (utils.retentions && utils.retentions.enabled && config.uploads.temporaryUploadsInterval > 0) {
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let temporaryUploadsInProgress = false
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const temporaryUploadCheck = async () => {
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if (temporaryUploadsInProgress) return
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temporaryUploadsInProgress = true
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try {
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const result = await utils.bulkDeleteExpired(false, isDevMode)
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if (result.expired.length || result.failed.length) {
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if (isDevMode) {
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let logMessage = `Expired uploads (${result.expired.length}): ${result.expired.map(file => file.name).join(', ')}`
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if (result.failed.length) {
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logMessage += `\nErrored (${result.failed.length}): ${result.failed.map(file => file.name).join(', ')}`
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}
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logger.debug(logMessage)
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} else {
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let logMessage = `Expired uploads: ${result.expired.length} deleted`
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if (result.failed.length) {
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logMessage += `, ${result.failed.length} errored`
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}
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logger.log(logMessage)
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}
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}
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} catch (error) {
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// Simply print-out errors, then continue
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logger.error(error)
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}
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temporaryUploadsInProgress = false
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}
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temporaryUploadCheck()
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setInterval(temporaryUploadCheck, config.uploads.temporaryUploadsInterval)
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}
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// NODE_ENV=development yarn start
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if (isDevMode) {
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const { inspect } = require('util')
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// Add readline interface to allow evaluating arbitrary JavaScript from console
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require('readline').createInterface({
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input: process.stdin
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}).on('line', line => {
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try {
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if (line === 'rs') return
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if (line === '.exit') return process.exit(0)
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// eslint-disable-next-line no-eval
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const evaled = eval(line)
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process.stdout.write(`${typeof evaled === 'string' ? evaled : inspect(evaled)}\n`)
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} catch (error) {
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process.stderr.write(`${error.stack}\n`)
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}
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}).on('SIGINT', () => {
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process.exit(0)
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})
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logger.log(utils.stripIndents(`!!! DEVELOPMENT MODE !!!
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[=] Nunjucks will auto rebuild (not live reload)
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[=] HTTP rate limits disabled
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[=] Readline interface enabled (eval arbitrary JS input)`))
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}
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} catch (error) {
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logger.error(error)
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process.exit(1)
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}
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})()
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