server/server -> server/core

server/core/helpers/express-utils.ts

@@ -0,0 +1,156 @@
+import express, { RequestHandler } from 'express'
+import multer, { diskStorage } from 'multer'
+import { getLowercaseExtension } from '@peertube/peertube-node-utils'
+import { CONFIG } from '../initializers/config.js'
+import { REMOTE_SCHEME } from '../initializers/constants.js'
+import { isArray } from './custom-validators/misc.js'
+import { logger } from './logger.js'
+import { deleteFileAndCatch, generateRandomString } from './utils.js'
+import { getExtFromMimetype } from './video.js'
+
+function buildNSFWFilter (res?: express.Response, paramNSFW?: string) {
+  if (paramNSFW === 'true') return true
+  if (paramNSFW === 'false') return false
+  if (paramNSFW === 'both') return undefined
+
+  if (res?.locals.oauth) {
+    const user = res.locals.oauth.token.User
+
+    // User does not want NSFW videos
+    if (user.nsfwPolicy === 'do_not_list') return false
+
+    // Both
+    return undefined
+  }
+
+  if (CONFIG.INSTANCE.DEFAULT_NSFW_POLICY === 'do_not_list') return false
+
+  // Display all
+  return null
+}
+
+function cleanUpReqFiles (req: express.Request) {
+  const filesObject = req.files
+  if (!filesObject) return
+
+  if (isArray(filesObject)) {
+    filesObject.forEach(f => deleteFileAndCatch(f.path))
+    return
+  }
+
+  for (const key of Object.keys(filesObject)) {
+    const files = filesObject[key]
+
+    files.forEach(f => deleteFileAndCatch(f.path))
+  }
+}
+
+function getHostWithPort (host: string) {
+  const splitted = host.split(':')
+
+  // The port was not specified
+  if (splitted.length === 1) {
+    if (REMOTE_SCHEME.HTTP === 'https') return host + ':443'
+
+    return host + ':80'
+  }
+
+  return host
+}
+
+function createReqFiles (
+  fieldNames: string[],
+  mimeTypes: { [id: string]: string | string[] },
+  destination = CONFIG.STORAGE.TMP_DIR
+): RequestHandler {
+  const storage = diskStorage({
+    destination: (req, file, cb) => {
+      cb(null, destination)
+    },
+
+    filename: (req, file, cb) => {
+      return generateReqFilename(file, mimeTypes, cb)
+    }
+  })
+
+  const fields: { name: string, maxCount: number }[] = []
+  for (const fieldName of fieldNames) {
+    fields.push({
+      name: fieldName,
+      maxCount: 1
+    })
+  }
+
+  return multer({ storage }).fields(fields)
+}
+
+function createAnyReqFiles (
+  mimeTypes: { [id: string]: string | string[] },
+  fileFilter: (req: express.Request, file: Express.Multer.File, cb: (err: Error, result: boolean) => void) => void
+): RequestHandler {
+  const storage = diskStorage({
+    destination: (req, file, cb) => {
+      cb(null, CONFIG.STORAGE.TMP_DIR)
+    },
+
+    filename: (req, file, cb) => {
+      return generateReqFilename(file, mimeTypes, cb)
+    }
+  })
+
+  return multer({ storage, fileFilter }).any()
+}
+
+function isUserAbleToSearchRemoteURI (res: express.Response) {
+  const user = res.locals.oauth ? res.locals.oauth.token.User : undefined
+
+  return CONFIG.SEARCH.REMOTE_URI.ANONYMOUS === true ||
+    (CONFIG.SEARCH.REMOTE_URI.USERS === true && user !== undefined)
+}
+
+function getCountVideos (req: express.Request) {
+  return req.query.skipCount !== true
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  buildNSFWFilter,
+  getHostWithPort,
+  createAnyReqFiles,
+  isUserAbleToSearchRemoteURI,
+  createReqFiles,
+  cleanUpReqFiles,
+  getCountVideos
+}
+
+// ---------------------------------------------------------------------------
+
+async function generateReqFilename (
+  file: Express.Multer.File,
+  mimeTypes: { [id: string]: string | string[] },
+  cb: (err: Error, name: string) => void
+) {
+  let extension: string
+  const fileExtension = getLowercaseExtension(file.originalname)
+  const extensionFromMimetype = getExtFromMimetype(mimeTypes, file.mimetype)
+
+  // Take the file extension if we don't understand the mime type
+  if (!extensionFromMimetype) {
+    extension = fileExtension
+  } else {
+    // Take the first available extension for this mimetype
+    extension = extensionFromMimetype
+  }
+
+  let randomString = ''
+
+  try {
+    randomString = await generateRandomString(16)
+  } catch (err) {
+    logger.error('Cannot generate random string for file name.', { err })
+    randomString = 'fake-random-string'
+  }
+
+  cb(null, randomString + extension)
+}