From 40e87e9ecc54e3513fb586928330a7855eb192c6 Mon Sep 17 00:00:00 2001
From: Chocobozzz <me@florianbigard.com>
Date: Thu, 12 Jul 2018 19:02:00 +0200
Subject: Implement captions/subtitles

---
 server/helpers/activitypub.ts                      |  1 +
 .../custom-validators/activitypub/videos.ts        | 13 +++++++
 server/helpers/custom-validators/video-captions.ts | 41 ++++++++++++++++++++++
 server/helpers/custom-validators/videos.ts         | 24 +++++++++++++
 4 files changed, 79 insertions(+)
 create mode 100644 server/helpers/custom-validators/video-captions.ts

(limited to 'server/helpers')

diff --git a/server/helpers/activitypub.ts b/server/helpers/activitypub.ts
index 37a251697..c49142a04 100644
--- a/server/helpers/activitypub.ts
+++ b/server/helpers/activitypub.ts
@@ -18,6 +18,7 @@ function activityPubContextify <T> (data: T) {
         uuid: 'http://schema.org/identifier',
         category: 'http://schema.org/category',
         licence: 'http://schema.org/license',
+        subtitleLanguage: 'http://schema.org/subtitleLanguage',
         sensitive: 'as:sensitive',
         language: 'http://schema.org/inLanguage',
         views: 'http://schema.org/Number',
diff --git a/server/helpers/custom-validators/activitypub/videos.ts b/server/helpers/custom-validators/activitypub/videos.ts
index 37c90a0c8..d97bbd2a9 100644
--- a/server/helpers/custom-validators/activitypub/videos.ts
+++ b/server/helpers/custom-validators/activitypub/videos.ts
@@ -51,6 +51,7 @@ function sanitizeAndCheckVideoTorrentObject (video: any) {
   if (!setValidRemoteVideoUrls(video)) return false
   if (!setRemoteVideoTruncatedContent(video)) return false
   if (!setValidAttributedTo(video)) return false
+  if (!setValidRemoteCaptions(video)) return false
 
   // Default attributes
   if (!isVideoStateValid(video.state)) video.state = VideoState.PUBLISHED
@@ -98,6 +99,18 @@ function setValidRemoteTags (video: any) {
   return true
 }
 
+function setValidRemoteCaptions (video: any) {
+  if (!video.subtitleLanguage) video.subtitleLanguage = []
+
+  if (Array.isArray(video.subtitleLanguage) === false) return false
+
+  video.subtitleLanguage = video.subtitleLanguage.filter(caption => {
+    return isRemoteStringIdentifierValid(caption)
+  })
+
+  return true
+}
+
 function isRemoteNumberIdentifierValid (data: any) {
   return validator.isInt(data.identifier, { min: 0 })
 }
diff --git a/server/helpers/custom-validators/video-captions.ts b/server/helpers/custom-validators/video-captions.ts
new file mode 100644
index 000000000..fd4dc740b
--- /dev/null
+++ b/server/helpers/custom-validators/video-captions.ts
@@ -0,0 +1,41 @@
+import { CONSTRAINTS_FIELDS, VIDEO_LANGUAGES } from '../../initializers'
+import { exists, isFileValid } from './misc'
+import { Response } from 'express'
+import { VideoModel } from '../../models/video/video'
+import { VideoCaptionModel } from '../../models/video/video-caption'
+
+function isVideoCaptionLanguageValid (value: any) {
+  return exists(value) && VIDEO_LANGUAGES[ value ] !== undefined
+}
+
+const videoCaptionTypes = CONSTRAINTS_FIELDS.VIDEO_CAPTIONS.CAPTION_FILE.EXTNAME
+                                          .map(v => v.replace('.', ''))
+                                          .join('|')
+const videoCaptionsTypesRegex = `text/(${videoCaptionTypes})`
+
+function isVideoCaptionFile (files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[], field: string) {
+  return isFileValid(files, videoCaptionsTypesRegex, field, CONSTRAINTS_FIELDS.VIDEO_CAPTIONS.CAPTION_FILE.FILE_SIZE.max)
+}
+
+async function isVideoCaptionExist (video: VideoModel, language: string, res: Response) {
+  const videoCaption = await VideoCaptionModel.loadByVideoIdAndLanguage(video.id, language)
+
+  if (!videoCaption) {
+    res.status(404)
+       .json({ error: 'Video caption not found' })
+       .end()
+
+    return false
+  }
+
+  res.locals.videoCaption = videoCaption
+  return true
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  isVideoCaptionFile,
+  isVideoCaptionLanguageValid,
+  isVideoCaptionExist
+}
diff --git a/server/helpers/custom-validators/videos.ts b/server/helpers/custom-validators/videos.ts
index 672f06dc0..b5cb126d9 100644
--- a/server/helpers/custom-validators/videos.ts
+++ b/server/helpers/custom-validators/videos.ts
@@ -126,6 +126,29 @@ function isVideoFileSizeValid (value: string) {
   return exists(value) && validator.isInt(value + '', VIDEOS_CONSTRAINTS_FIELDS.FILE_SIZE)
 }
 
+function checkUserCanManageVideo (user: UserModel, video: VideoModel, right: UserRight, res: Response) {
+  // Retrieve the user who did the request
+  if (video.isOwned() === false) {
+    res.status(403)
+       .json({ error: 'Cannot manage a video of another server.' })
+       .end()
+    return false
+  }
+
+  // Check if the user can delete the video
+  // The user can delete it if he has the right
+  // Or if s/he is the video's account
+  const account = video.VideoChannel.Account
+  if (user.hasRight(right) === false && account.userId !== user.id) {
+    res.status(403)
+       .json({ error: 'Cannot manage a video of another user.' })
+       .end()
+    return false
+  }
+
+  return true
+}
+
 async function isVideoExist (id: string, res: Response) {
   let video: VideoModel
 
@@ -179,6 +202,7 @@ async function isVideoChannelOfAccountExist (channelId: number, user: UserModel,
 
 export {
   isVideoCategoryValid,
+  checkUserCanManageVideo,
   isVideoLicenceValid,
   isVideoLanguageValid,
   isVideoTruncatedDescriptionValid,
-- 
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