From 90a8bd305de4153ec21137a73ff482dcc2e3e19b Mon Sep 17 00:00:00 2001
From: Chocobozzz <me@florianbigard.com>
Date: Tue, 16 Feb 2021 16:25:53 +0100
Subject: Dissociate video file names and video uuid

---
 server/controllers/download.ts | 78 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 server/controllers/download.ts

(limited to 'server/controllers/download.ts')

diff --git a/server/controllers/download.ts b/server/controllers/download.ts
new file mode 100644
index 000000000..27caa1518
--- /dev/null
+++ b/server/controllers/download.ts
@@ -0,0 +1,78 @@
+import * as cors from 'cors'
+import * as express from 'express'
+import { VideosTorrentCache } from '@server/lib/files-cache/videos-torrent-cache'
+import { getVideoFilePath } from '@server/lib/video-paths'
+import { MVideoFile, MVideoFullLight } from '@server/types/models'
+import { HttpStatusCode } from '@shared/core-utils/miscs/http-error-codes'
+import { VideoStreamingPlaylistType } from '@shared/models'
+import { STATIC_DOWNLOAD_PATHS } from '../initializers/constants'
+import { asyncMiddleware, videosDownloadValidator } from '../middlewares'
+
+const downloadRouter = express.Router()
+
+downloadRouter.use(cors())
+
+downloadRouter.use(
+  STATIC_DOWNLOAD_PATHS.TORRENTS + ':filename',
+  downloadTorrent
+)
+
+downloadRouter.use(
+  STATIC_DOWNLOAD_PATHS.VIDEOS + ':id-:resolution([0-9]+).:extension',
+  asyncMiddleware(videosDownloadValidator),
+  downloadVideoFile
+)
+
+downloadRouter.use(
+  STATIC_DOWNLOAD_PATHS.HLS_VIDEOS + ':id-:resolution([0-9]+)-fragmented.:extension',
+  asyncMiddleware(videosDownloadValidator),
+  downloadHLSVideoFile
+)
+
+// ---------------------------------------------------------------------------
+
+export {
+  downloadRouter
+}
+
+// ---------------------------------------------------------------------------
+
+async function downloadTorrent (req: express.Request, res: express.Response) {
+  const result = await VideosTorrentCache.Instance.getFilePath(req.params.filename)
+  if (!result) return res.sendStatus(HttpStatusCode.NOT_FOUND_404)
+
+  return res.download(result.path, result.downloadName)
+}
+
+function downloadVideoFile (req: express.Request, res: express.Response) {
+  const video = res.locals.videoAll
+
+  const videoFile = getVideoFile(req, video.VideoFiles)
+  if (!videoFile) return res.status(HttpStatusCode.NOT_FOUND_404).end()
+
+  return res.download(getVideoFilePath(video, videoFile), `${video.name}-${videoFile.resolution}p${videoFile.extname}`)
+}
+
+function downloadHLSVideoFile (req: express.Request, res: express.Response) {
+  const video = res.locals.videoAll
+  const playlist = getHLSPlaylist(video)
+  if (!playlist) return res.status(HttpStatusCode.NOT_FOUND_404).end
+
+  const videoFile = getVideoFile(req, playlist.VideoFiles)
+  if (!videoFile) return res.status(HttpStatusCode.NOT_FOUND_404).end()
+
+  const filename = `${video.name}-${videoFile.resolution}p-${playlist.getStringType()}${videoFile.extname}`
+  return res.download(getVideoFilePath(playlist, videoFile), filename)
+}
+
+function getVideoFile (req: express.Request, files: MVideoFile[]) {
+  const resolution = parseInt(req.params.resolution, 10)
+  return files.find(f => f.resolution === resolution)
+}
+
+function getHLSPlaylist (video: MVideoFullLight) {
+  const playlist = video.VideoStreamingPlaylists.find(p => p.type === VideoStreamingPlaylistType.HLS)
+  if (!playlist) return undefined
+
+  return Object.assign(playlist, { Video: video })
+}
-- 
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