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const express = require('express')
const app = express()
const limit = require('express-limit').limit
const helmet = require('helmet')
const bp = require('body-parser')
const cookieParser = require('cookie-parser')
const createDOMPurify = require('dompurify')
const { JSDOM } = require('jsdom')
const Controller = require('./source/controller')
const readfile = require('./source/readfile')
const session = require('./source/session')
const logger = require('./source/logger')()
const mime = {
html: 'text/html',
txt: 'text/plain',
css: 'text/css',
gif: 'image/gif',
jpg: 'image/jpeg',
png: 'image/png',
webp: 'image/webp',
avif: 'image/avif',
ico: 'image/ico',
svg: 'image/svg+xml',
js: 'application/javascript'
}
require('dotenv').config()
// Handles the routes
class App {
constructor() {
this.readfile = new readfile({baseUrl: process.env.baseUrl, mime: mime})
this.controller = new Controller()
}
App() {
app.use(bp.json())
app.use(cookieParser())
if (process.env.NODE_ENV === 'prod') {
app.use(helmet())
app.use(limit({
max: 100, // 100 requests
period: 300 * 1000 // per minute (five minutes)
}))
}
app.get('/js/*', this.#Logger, (req, res) => {
const data = this.readfile.GetFile(req.path)
data.mime.then(output => this.#FileOpen({data: data, mime: output, res: res}))
})
app.get('/css/*', this.#Logger, (req, res) => {
const data = this.readfile.GetFile(req.path)
data.mime.then(output => this.#FileOpen({data: data, mime: output, res: res}))
})
app.get('/img/*', this.#Logger, (req, res) => {
const data = this.readfile.GetFile(req.path)
data.mime.then(output => this.#FileOpen({data: data, mime: output, res: res}))
})
app.route('*')
.get(this.#ValidateCookie, this.#Logger, (req, res) => {
this.controller.Main().then(output => {
this.path = {
split: req.path.split('/'),
string: req.path
}
switch (this.path.split[1]) {
case 'favicon.ico':
this.data = this.readfile.GetFavicon()
this.data.mime.then(output => this.#FileOpen({data: this.data, mime: output, res: res}))
break
case 'robots.txt':
this.data = this.readfile.GetRobots()
this.data.mime.then(output => this.#FileOpen({data: this.data, mime: output, res: res}))
break
default:
if (this.path.string.endsWith('/') && this.path.string.length > 1) this.path.string = this.path.string.substring(0, this.path.string.length - 1)
if (output.has(this.path.string)) {res.send(this.readfile.GetMain())} else {res.sendStatus(404)}
break
}
})
})
.post(this.#Logger, (req, res) => {
this.path = {
split: req.path.split('/'),
string: this.#RemoveBaseUrl(req.body.url)
}
if (this.path.string.endsWith('/') && this.path.string.length > 1) this.path.string = this.path.string.substring(0, this.path.string.length - 1)
this.controller.Main(req.body.value).then(output => {
if (output.has(this.path.string)) {
const data = this.readfile.Create(output.get(this.path.string))
data.then(output => {
try {
const window = new JSDOM('').window
const DOMPurify = createDOMPurify(window)
const clean = DOMPurify.sanitize(output.layouts.header + output.layouts.data + output.layouts.footer)
res.send(clean)
} catch (err) {
logger.Error(err)
res.send('Not Found')
}
})
} else {
res.send('Not Found')
}
})
})
app.listen(3000)
}
#Logger(req, res, next) {
const { cookies } = req
try {
logger.Info(`${req.method} ${req.path} from ${req.ip}:${cookies.session_id.replace('session_id', '')}`)
} catch (err) {
logger.Info(`${req.method} ${req.path} from ${req.ip}:n/a`)
}
next()
}
#FileOpen(x) {
x.res.set('Content-Type', x.mime)
x.data.file.on('open', () => x.data.file.pipe(x.res)).on('error', () => x.res.sendStatus(404))
}
#ValidateCookie(req, res, next) {
const { cookies } = req
session().Expired()
if ('session_id' in cookies) {
if (session().Exists(cookies.session_id.replace('session_id', ''))) {
res.clearCookie('session_id')
res.cookie('session_id', session().Create())
}
} else res.cookie('session_id', session().Create())
next()
}
#RemoveBaseUrl(x) {
const object = {
baseUrlPattern: /^https?:\/\/[a-z\:0-9.]+/,
result: '',
url: ''
}
const match = object.baseUrlPattern.exec(x)
if (match !== null) object.result = match[0]
if (object.result.length > 0) object.result = match[0]
if (object.result.length > 0) object.url = x.replace(object.result, '')
return object.url
}
}
new App().App()
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