3 files changed, 55 insertions, 19 deletions

diff --git a/server/middlewares/validators/shared/videos.ts b/server/middlewares/validators/shared/videos.ts
index 71b81654f..fc978b63a 100644
--- a/server/middlewares/validators/shared/videos.ts
+++ b/server/middlewares/validators/shared/videos.ts
@@ -1,16 +1,20 @@
-import { Response } from 'express'
+import { Request, Response } from 'express'
 import { loadVideo, VideoLoadType } from '@server/lib/model-loaders'
+import { authenticatePromiseIfNeeded } from '@server/middlewares/auth'
+import { VideoModel } from '@server/models/video/video'
 import { VideoChannelModel } from '@server/models/video/video-channel'
 import { VideoFileModel } from '@server/models/video/video-file'
 import {
   MUser,
   MUserAccountId,
+  MVideo,
   MVideoAccountLight,
   MVideoFormattableDetails,
   MVideoFullLight,
   MVideoId,
   MVideoImmutable,
-  MVideoThumbnail
+  MVideoThumbnail,
+  MVideoWithRights
 } from '@server/types/models'
 import { HttpStatusCode, UserRight } from '@shared/models'
 
@@ -89,6 +93,27 @@ async function doesVideoChannelOfAccountExist (channelId: number, user: MUserAcc
   return true
 }
 
+async function checkCanSeeVideoIfPrivate (req: Request, res: Response, video: MVideo, authenticateInQuery = false) {
+  if (!video.requiresAuth()) return true
+
+  const videoWithRights = await VideoModel.loadAndPopulateAccountAndServerAndTags(video.id)
+
+  return checkCanSeePrivateVideo(req, res, videoWithRights, authenticateInQuery)
+}
+
+async function checkCanSeePrivateVideo (req: Request, res: Response, video: MVideoWithRights, authenticateInQuery = false) {
+  await authenticatePromiseIfNeeded(req, res, authenticateInQuery)
+
+  const user = res.locals.oauth ? res.locals.oauth.token.User : null
+
+  // Only the owner or a user that have blocklist rights can see the video
+  if (!user || !user.canGetVideo(video)) {
+    return false
+  }
+
+  return true
+}
+
 function checkUserCanManageVideo (user: MUser, video: MVideoAccountLight, right: UserRight, res: Response, onlyOwned = true) {
   // Retrieve the user who did the request
   if (onlyOwned && video.isOwned() === false) {
@@ -120,5 +145,7 @@ export {
   doesVideoChannelOfAccountExist,
   doesVideoExist,
   doesVideoFileOfVideoExist,
-  checkUserCanManageVideo
+  checkUserCanManageVideo,
+  checkCanSeeVideoIfPrivate,
+  checkCanSeePrivateVideo
 }
diff --git a/server/middlewares/validators/videos/video-captions.ts b/server/middlewares/validators/videos/video-captions.ts
index 38321ccf9..4fc4c8ec5 100644
--- a/server/middlewares/validators/videos/video-captions.ts
+++ b/server/middlewares/validators/videos/video-captions.ts
@@ -1,11 +1,18 @@
 import express from 'express'
 import { body, param } from 'express-validator'
-import { UserRight } from '../../../../shared'
+import { HttpStatusCode, UserRight } from '../../../../shared'
 import { isVideoCaptionFile, isVideoCaptionLanguageValid } from '../../../helpers/custom-validators/video-captions'
 import { cleanUpReqFiles } from '../../../helpers/express-utils'
 import { logger } from '../../../helpers/logger'
 import { CONSTRAINTS_FIELDS, MIMETYPES } from '../../../initializers/constants'
-import { areValidationErrors, checkUserCanManageVideo, doesVideoCaptionExist, doesVideoExist, isValidVideoIdParam } from '../shared'
+import {
+  areValidationErrors,
+  checkCanSeeVideoIfPrivate,
+  checkUserCanManageVideo,
+  doesVideoCaptionExist,
+  doesVideoExist,
+  isValidVideoIdParam
+} from '../shared'
 
 const addVideoCaptionValidator = [
   isValidVideoIdParam('videoId'),
@@ -64,7 +71,16 @@ const listVideoCaptionsValidator = [
     logger.debug('Checking listVideoCaptions parameters', { parameters: req.params })
 
     if (areValidationErrors(req, res)) return
-    if (!await doesVideoExist(req.params.videoId, res, 'id')) return
+    if (!await doesVideoExist(req.params.videoId, res, 'only-video')) return
+
+    const video = res.locals.onlyVideo
+
+    if (!await checkCanSeeVideoIfPrivate(req, res, video)) {
+      return res.fail({
+        status: HttpStatusCode.FORBIDDEN_403,
+        message: 'Cannot list captions of private/internal/blocklisted video'
+      })
+    }
 
     return next()
   }
diff --git a/server/middlewares/validators/videos/videos.ts b/server/middlewares/validators/videos/videos.ts
index 3ebdbc33d..782f495e8 100644
--- a/server/middlewares/validators/videos/videos.ts
+++ b/server/middlewares/validators/videos/videos.ts
@@ -51,9 +51,9 @@ import { CONSTRAINTS_FIELDS, OVERVIEWS } from '../../../initializers/constants'
 import { isLocalVideoAccepted } from '../../../lib/moderation'
 import { Hooks } from '../../../lib/plugins/hooks'
 import { VideoModel } from '../../../models/video/video'
-import { authenticatePromiseIfNeeded } from '../../auth'
 import {
   areValidationErrors,
+  checkCanSeePrivateVideo,
   checkUserCanManageVideo,
   doesVideoChannelOfAccountExist,
   doesVideoExist,
@@ -317,19 +317,12 @@ const videosCustomGetValidator = (
 
       // Video private or blacklisted
       if (video.requiresAuth()) {
-        await authenticatePromiseIfNeeded(req, res, authenticateInQuery)
+        if (await checkCanSeePrivateVideo(req, res, video, authenticateInQuery)) return next()
 
-        const user = res.locals.oauth ? res.locals.oauth.token.User : null
-
-        // Only the owner or a user that have blocklist rights can see the video
-        if (!user || !user.canGetVideo(video)) {
-          return res.fail({
-            status: HttpStatusCode.FORBIDDEN_403,
-            message: 'Cannot get this private/internal or blocklisted video'
-          })
-        }
-
-        return next()
+        return res.fail({
+          status: HttpStatusCode.FORBIDDEN_403,
+          message: 'Cannot get this private/internal or blocklisted video'
+        })
       }
 
       // Video is public, anyone can access it