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