4 files changed, 200 insertions, 25 deletions

diff --git a/server/middlewares/validators/index.ts b/server/middlewares/validators/index.ts
index ffadb3b49..899da229a 100644
--- a/server/middlewares/validators/index.ts
+++ b/server/middlewares/validators/index.ts
@@ -1,7 +1,6 @@
-export * from './activitypub'
-export * from './videos'
 export * from './abuse'
 export * from './account'
+export * from './activitypub'
 export * from './actor-image'
 export * from './blocklist'
 export * from './bulk'
@@ -10,8 +9,8 @@ export * from './express'
 export * from './feeds'
 export * from './follows'
 export * from './jobs'
-export * from './metrics'
 export * from './logs'
+export * from './metrics'
 export * from './oembed'
 export * from './pagination'
 export * from './plugins'
@@ -19,9 +18,11 @@ export * from './redundancy'
 export * from './search'
 export * from './server'
 export * from './sort'
+export * from './static'
 export * from './themes'
 export * from './user-history'
 export * from './user-notifications'
 export * from './user-subscriptions'
 export * from './users'
+export * from './videos'
 export * from './webfinger'
diff --git a/server/middlewares/validators/shared/videos.ts b/server/middlewares/validators/shared/videos.ts
index e3a98c58f..c29751eca 100644
--- a/server/middlewares/validators/shared/videos.ts
+++ b/server/middlewares/validators/shared/videos.ts
@@ -1,7 +1,7 @@
 import { Request, Response } from 'express'
-import { isUUIDValid } from '@server/helpers/custom-validators/misc'
 import { loadVideo, VideoLoadType } from '@server/lib/model-loaders'
 import { isAbleToUploadVideo } from '@server/lib/user'
+import { VideoTokensManager } from '@server/lib/video-tokens-manager'
 import { authenticatePromise } from '@server/middlewares/auth'
 import { VideoModel } from '@server/models/video/video'
 import { VideoChannelModel } from '@server/models/video/video-channel'
@@ -108,26 +108,21 @@ async function checkCanSeeVideo (options: {
   res: Response
   paramId: string
   video: MVideo
-  authenticateInQuery?: boolean // default false
 }) {
-  const { req, res, video, paramId, authenticateInQuery = false } = options
+  const { req, res, video, paramId } = options
 
-  if (video.requiresAuth()) {
-    return checkCanSeeAuthVideo(req, res, video, authenticateInQuery)
+  if (video.requiresAuth(paramId)) {
+    return checkCanSeeAuthVideo(req, res, video)
   }
 
-  if (video.privacy === VideoPrivacy.UNLISTED) {
-    if (isUUIDValid(paramId)) return true
-
-    return checkCanSeeAuthVideo(req, res, video, authenticateInQuery)
+  if (video.privacy === VideoPrivacy.UNLISTED || video.privacy === VideoPrivacy.PUBLIC) {
+    return true
   }
 
-  if (video.privacy === VideoPrivacy.PUBLIC) return true
-
-  throw new Error('Fatal error when checking video right ' + video.url)
+  throw new Error('Unknown video privacy when checking video right ' + video.url)
 }
 
-async function checkCanSeeAuthVideo (req: Request, res: Response, video: MVideoId | MVideoWithRights, authenticateInQuery = false) {
+async function checkCanSeeAuthVideo (req: Request, res: Response, video: MVideoId | MVideoWithRights) {
   const fail = () => {
     res.fail({
       status: HttpStatusCode.FORBIDDEN_403,
@@ -137,7 +132,7 @@ async function checkCanSeeAuthVideo (req: Request, res: Response, video: MVideoI
     return false
   }
 
-  await authenticatePromise(req, res, authenticateInQuery)
+  await authenticatePromise(req, res)
 
   const user = res.locals.oauth?.token.User
   if (!user) return fail()
@@ -173,6 +168,36 @@ async function checkCanSeeAuthVideo (req: Request, res: Response, video: MVideoI
 
 // ---------------------------------------------------------------------------
 
+async function checkCanAccessVideoStaticFiles (options: {
+  video: MVideo
+  req: Request
+  res: Response
+  paramId: string
+}) {
+  const { video, req, res, paramId } = options
+
+  if (res.locals.oauth?.token.User) {
+    return checkCanSeeVideo(options)
+  }
+
+  if (!video.requiresAuth(paramId)) return true
+
+  const videoFileToken = req.query.videoFileToken
+  if (!videoFileToken) {
+    res.sendStatus(HttpStatusCode.FORBIDDEN_403)
+    return false
+  }
+
+  if (VideoTokensManager.Instance.hasToken({ token: videoFileToken, videoUUID: video.uuid })) {
+    return true
+  }
+
+  res.sendStatus(HttpStatusCode.FORBIDDEN_403)
+  return false
+}
+
+// ---------------------------------------------------------------------------
+
 function checkUserCanManageVideo (user: MUser, video: MVideoAccountLight, right: UserRight, res: Response, onlyOwned = true) {
   // Retrieve the user who did the request
   if (onlyOwned && video.isOwned() === false) {
@@ -220,6 +245,7 @@ export {
   doesVideoExist,
   doesVideoFileOfVideoExist,
 
+  checkCanAccessVideoStaticFiles,
   checkUserCanManageVideo,
   checkCanSeeVideo,
   checkUserQuota
diff --git a/server/middlewares/validators/static.ts b/server/middlewares/validators/static.ts
new file mode 100644
index 000000000..ff9e6ae6e
--- /dev/null
+++ b/server/middlewares/validators/static.ts
@@ -0,0 +1,131 @@
+import express from 'express'
+import { query } from 'express-validator'
+import LRUCache from 'lru-cache'
+import { basename, dirname } from 'path'
+import { exists, isUUIDValid } from '@server/helpers/custom-validators/misc'
+import { logger } from '@server/helpers/logger'
+import { LRU_CACHE } from '@server/initializers/constants'
+import { VideoModel } from '@server/models/video/video'
+import { VideoFileModel } from '@server/models/video/video-file'
+import { HttpStatusCode } from '@shared/models'
+import { areValidationErrors, checkCanAccessVideoStaticFiles } from './shared'
+
+const staticFileTokenBypass = new LRUCache<string, boolean>({
+  max: LRU_CACHE.STATIC_VIDEO_FILES_RIGHTS_CHECK.MAX_SIZE,
+  ttl: LRU_CACHE.STATIC_VIDEO_FILES_RIGHTS_CHECK.TTL
+})
+
+const ensureCanAccessVideoPrivateWebTorrentFiles = [
+  query('videoFileToken').optional().custom(exists),
+
+  async (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    if (areValidationErrors(req, res)) return
+
+    const token = extractTokenOrDie(req, res)
+    if (!token) return
+
+    const cacheKey = token + '-' + req.originalUrl
+
+    if (staticFileTokenBypass.has(cacheKey)) {
+      const allowedFromCache = staticFileTokenBypass.get(cacheKey)
+
+      if (allowedFromCache === true) return next()
+
+      return res.sendStatus(HttpStatusCode.FORBIDDEN_403)
+    }
+
+    const allowed = await isWebTorrentAllowed(req, res)
+
+    staticFileTokenBypass.set(cacheKey, allowed)
+
+    if (allowed !== true) return
+
+    return next()
+  }
+]
+
+const ensureCanAccessPrivateVideoHLSFiles = [
+  query('videoFileToken').optional().custom(exists),
+
+  async (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    if (areValidationErrors(req, res)) return
+
+    const videoUUID = basename(dirname(req.originalUrl))
+
+    if (!isUUIDValid(videoUUID)) {
+      logger.debug('Path does not contain valid video UUID to serve static file %s', req.originalUrl)
+
+      return res.sendStatus(HttpStatusCode.FORBIDDEN_403)
+    }
+
+    const token = extractTokenOrDie(req, res)
+    if (!token) return
+
+    const cacheKey = token + '-' + videoUUID
+
+    if (staticFileTokenBypass.has(cacheKey)) {
+      const allowedFromCache = staticFileTokenBypass.get(cacheKey)
+
+      if (allowedFromCache === true) return next()
+
+      return res.sendStatus(HttpStatusCode.FORBIDDEN_403)
+    }
+
+    const allowed = await isHLSAllowed(req, res, videoUUID)
+
+    staticFileTokenBypass.set(cacheKey, allowed)
+
+    if (allowed !== true) return
+
+    return next()
+  }
+]
+
+export {
+  ensureCanAccessVideoPrivateWebTorrentFiles,
+  ensureCanAccessPrivateVideoHLSFiles
+}
+
+// ---------------------------------------------------------------------------
+
+async function isWebTorrentAllowed (req: express.Request, res: express.Response) {
+  const filename = basename(req.path)
+
+  const file = await VideoFileModel.loadWithVideoByFilename(filename)
+  if (!file) {
+    logger.debug('Unknown static file %s to serve', req.originalUrl, { filename })
+
+    res.sendStatus(HttpStatusCode.FORBIDDEN_403)
+    return false
+  }
+
+  const video = file.getVideo()
+
+  return checkCanAccessVideoStaticFiles({ req, res, video, paramId: video.uuid })
+}
+
+async function isHLSAllowed (req: express.Request, res: express.Response, videoUUID: string) {
+  const video = await VideoModel.load(videoUUID)
+
+  if (!video) {
+    logger.debug('Unknown static file %s to serve', req.originalUrl, { videoUUID })
+
+    res.sendStatus(HttpStatusCode.FORBIDDEN_403)
+    return false
+  }
+
+  return checkCanAccessVideoStaticFiles({ req, res, video, paramId: video.uuid })
+}
+
+function extractTokenOrDie (req: express.Request, res: express.Response) {
+  const token = res.locals.oauth?.token.accessToken || req.query.videoFileToken
+
+  if (!token) {
+    return res.fail({
+      message: 'Bearer token is missing in headers or video file token is missing in URL query parameters',
+      status: HttpStatusCode.FORBIDDEN_403
+    })
+  }
+
+  return token
+}
diff --git a/server/middlewares/validators/videos/videos.ts b/server/middlewares/validators/videos/videos.ts
index 7fd2b03d1..e29eb4a32 100644
--- a/server/middlewares/validators/videos/videos.ts
+++ b/server/middlewares/validators/videos/videos.ts
@@ -7,7 +7,7 @@ import { getServerActor } from '@server/models/application/application'
 import { ExpressPromiseHandler } from '@server/types/express-handler'
 import { MUserAccountId, MVideoFullLight } from '@server/types/models'
 import { arrayify, getAllPrivacies } from '@shared/core-utils'
-import { HttpStatusCode, ServerErrorCode, UserRight, VideoInclude } from '@shared/models'
+import { HttpStatusCode, ServerErrorCode, UserRight, VideoInclude, VideoState } from '@shared/models'
 import {
   exists,
   isBooleanValid,
@@ -48,6 +48,7 @@ import { Hooks } from '../../../lib/plugins/hooks'
 import { VideoModel } from '../../../models/video/video'
 import {
   areValidationErrors,
+  checkCanAccessVideoStaticFiles,
   checkCanSeeVideo,
   checkUserCanManageVideo,
   checkUserQuota,
@@ -232,6 +233,11 @@ const videosUpdateValidator = getCommonVideoEditAttributes().concat([
     if (areErrorsInScheduleUpdate(req, res)) return cleanUpReqFiles(req)
     if (!await doesVideoExist(req.params.id, res)) return cleanUpReqFiles(req)
 
+    const video = getVideoWithAttributes(res)
+    if (req.body.privacy && video.isLive && video.state !== VideoState.WAITING_FOR_LIVE) {
+      return res.fail({ message: 'Cannot update privacy of a live that has already started' })
+    }
+
     // Check if the user who did the request is able to update the video
     const user = res.locals.oauth.token.User
     if (!checkUserCanManageVideo(user, res.locals.videoAll, UserRight.UPDATE_ANY_VIDEO, res)) return cleanUpReqFiles(req)
@@ -271,10 +277,7 @@ async function checkVideoFollowConstraints (req: express.Request, res: express.R
   })
 }
 
-const videosCustomGetValidator = (
-  fetchType: 'for-api' | 'all' | 'only-video' | 'only-immutable-attributes',
-  authenticateInQuery = false
-) => {
+const videosCustomGetValidator = (fetchType: 'for-api' | 'all' | 'only-video' | 'only-immutable-attributes') => {
   return [
     isValidVideoIdParam('id'),
 
@@ -287,7 +290,7 @@ const videosCustomGetValidator = (
 
       const video = getVideoWithAttributes(res) as MVideoFullLight
 
-      if (!await checkCanSeeVideo({ req, res, video, paramId: req.params.id, authenticateInQuery })) return
+      if (!await checkCanSeeVideo({ req, res, video, paramId: req.params.id })) return
 
       return next()
     }
@@ -295,7 +298,6 @@ const videosCustomGetValidator = (
 }
 
 const videosGetValidator = videosCustomGetValidator('all')
-const videosDownloadValidator = videosCustomGetValidator('all', true)
 
 const videoFileMetadataGetValidator = getCommonVideoEditAttributes().concat([
   isValidVideoIdParam('id'),
@@ -311,6 +313,21 @@ const videoFileMetadataGetValidator = getCommonVideoEditAttributes().concat([
   }
 ])
 
+const videosDownloadValidator = [
+  isValidVideoIdParam('id'),
+
+  async (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    if (areValidationErrors(req, res)) return
+    if (!await doesVideoExist(req.params.id, res, 'all')) return
+
+    const video = getVideoWithAttributes(res)
+
+    if (!await checkCanAccessVideoStaticFiles({ req, res, video, paramId: req.params.id })) return
+
+    return next()
+  }
+]
+
 const videosRemoveValidator = [
   isValidVideoIdParam('id'),
 
@@ -372,7 +389,7 @@ function getCommonVideoEditAttributes () {
       .custom(isBooleanValid).withMessage('Should have a valid waitTranscoding boolean'),
     body('privacy')
       .optional()
-      .customSanitizer(toValueOrNull)
+      .customSanitizer(toIntOrNull)
       .custom(isVideoPrivacyValid),
     body('description')
       .optional()