server/helpers/express-utils.ts

   1 import * as express from 'express'
   2 import * as multer from 'multer'
   3 import { CONFIG, REMOTE_SCHEME } from '../initializers'
   4 import { logger } from './logger'
   5 import { User } from '../../shared/models/users'
   6 import { generateRandomString } from './utils'
   7 import { extname } from 'path'
   8
   9 function buildNSFWFilter (res: express.Response, paramNSFW?: string) {
  10   if (paramNSFW === 'true') return true
  11   if (paramNSFW === 'false') return false
  12   if (paramNSFW === 'both') return undefined
  13
  14   if (res.locals.oauth) {
  15     const user: User = res.locals.oauth.token.User
  16     // User does not want NSFW videos
  17     if (user && user.nsfwPolicy === 'do_not_list') return false
  18   }
  19
  20   if (CONFIG.INSTANCE.DEFAULT_NSFW_POLICY === 'do_not_list') return false
  21
  22   // Display all
  23   return null
  24 }
  25
  26 function getHostWithPort (host: string) {
  27   const splitted = host.split(':')
  28
  29   // The port was not specified
  30   if (splitted.length === 1) {
  31     if (REMOTE_SCHEME.HTTP === 'https') return host + ':443'
  32
  33     return host + ':80'
  34   }
  35
  36   return host
  37 }
  38
  39 function badRequest (req: express.Request, res: express.Response, next: express.NextFunction) {
  40   return res.type('json').status(400).end()
  41 }
  42
  43 function createReqFiles (
  44   fieldNames: string[],
  45   mimeTypes: { [ id: string ]: string },
  46   destinations: { [ fieldName: string ]: string }
  47 ) {
  48   const storage = multer.diskStorage({
  49     destination: (req, file, cb) => {
  50       cb(null, destinations[ file.fieldname ])
  51     },
  52
  53     filename: async (req, file, cb) => {
  54       const extension = mimeTypes[ file.mimetype ] || extname(file.originalname)
  55       let randomString = ''
  56
  57       try {
  58         randomString = await generateRandomString(16)
  59       } catch (err) {
  60         logger.error('Cannot generate random string for file name.', { err })
  61         randomString = 'fake-random-string'
  62       }
  63
  64       cb(null, randomString + extension)
  65     }
  66   })
  67
  68   let fields: { name: string, maxCount: number }[] = []
  69   for (const fieldName of fieldNames) {
  70     fields.push({
  71       name: fieldName,
  72       maxCount: 1
  73     })
  74   }
  75
  76   return multer({ storage }).fields(fields)
  77 }
  78
  79 // ---------------------------------------------------------------------------
  80
  81 export {
  82   buildNSFWFilter,
  83   getHostWithPort,
  84   badRequest,
  85   createReqFiles
  86 }