import cors from 'cors' import express from 'express' import { logger } from '@server/helpers/logger.js' import { VideoTorrentsSimpleFileCache } from '@server/lib/files-cache/index.js' import { generateHLSFilePresignedUrl, generateWebVideoPresignedUrl } from '@server/lib/object-storage/index.js' import { Hooks } from '@server/lib/plugins/hooks.js' import { VideoPathManager } from '@server/lib/video-path-manager.js' import { MStreamingPlaylist, MStreamingPlaylistVideo, MVideo, MVideoFile, MVideoFullLight } from '@server/types/models/index.js' import { forceNumber } from '@peertube/peertube-core-utils' import { HttpStatusCode, VideoStorage, VideoStreamingPlaylistType } from '@peertube/peertube-models' import { STATIC_DOWNLOAD_PATHS } from '../initializers/constants.js' import { asyncMiddleware, optionalAuthenticate, videosDownloadValidator } from '../middlewares/index.js' const downloadRouter = express.Router() downloadRouter.use(cors()) downloadRouter.use( STATIC_DOWNLOAD_PATHS.TORRENTS + ':filename', asyncMiddleware(downloadTorrent) ) downloadRouter.use( STATIC_DOWNLOAD_PATHS.VIDEOS + ':id-:resolution([0-9]+).:extension', optionalAuthenticate, asyncMiddleware(videosDownloadValidator), asyncMiddleware(downloadVideoFile) ) downloadRouter.use( STATIC_DOWNLOAD_PATHS.HLS_VIDEOS + ':id-:resolution([0-9]+)-fragmented.:extension', optionalAuthenticate, asyncMiddleware(videosDownloadValidator), asyncMiddleware(downloadHLSVideoFile) ) // --------------------------------------------------------------------------- export { downloadRouter } // --------------------------------------------------------------------------- async function downloadTorrent (req: express.Request, res: express.Response) { const result = await VideoTorrentsSimpleFileCache.Instance.getFilePath(req.params.filename) if (!result) { return res.fail({ status: HttpStatusCode.NOT_FOUND_404, message: 'Torrent file not found' }) } const allowParameters = { req, res, torrentPath: result.path, downloadName: result.downloadName } const allowedResult = await Hooks.wrapFun( isTorrentDownloadAllowed, allowParameters, 'filter:api.download.torrent.allowed.result' ) if (!checkAllowResult(res, allowParameters, allowedResult)) return return res.download(result.path, result.downloadName) } async function downloadVideoFile (req: express.Request, res: express.Response) { const video = res.locals.videoAll const videoFile = getVideoFile(req, video.VideoFiles) if (!videoFile) { return res.fail({ status: HttpStatusCode.NOT_FOUND_404, message: 'Video file not found' }) } const allowParameters = { req, res, video, videoFile } const allowedResult = await Hooks.wrapFun( isVideoDownloadAllowed, allowParameters, 'filter:api.download.video.allowed.result' ) if (!checkAllowResult(res, allowParameters, allowedResult)) return // Express uses basename on filename parameter const videoName = video.name.replace(/[/\\]/g, '_') const downloadFilename = `${videoName}-${videoFile.resolution}p${videoFile.extname}` if (videoFile.storage === VideoStorage.OBJECT_STORAGE) { return redirectToObjectStorage({ req, res, video, file: videoFile, downloadFilename }) } await VideoPathManager.Instance.makeAvailableVideoFile(videoFile.withVideoOrPlaylist(video), path => { return res.download(path, downloadFilename) }) } async function downloadHLSVideoFile (req: express.Request, res: express.Response) { const video = res.locals.videoAll const streamingPlaylist = getHLSPlaylist(video) if (!streamingPlaylist) return res.status(HttpStatusCode.NOT_FOUND_404).end const videoFile = getVideoFile(req, streamingPlaylist.VideoFiles) if (!videoFile) { return res.fail({ status: HttpStatusCode.NOT_FOUND_404, message: 'Video file not found' }) } const allowParameters = { req, res, video, streamingPlaylist, videoFile } const allowedResult = await Hooks.wrapFun( isVideoDownloadAllowed, allowParameters, 'filter:api.download.video.allowed.result' ) if (!checkAllowResult(res, allowParameters, allowedResult)) return const downloadFilename = `${video.name}-${videoFile.resolution}p-${streamingPlaylist.getStringType()}${videoFile.extname}` if (videoFile.storage === VideoStorage.OBJECT_STORAGE) { return redirectToObjectStorage({ req, res, video, streamingPlaylist, file: videoFile, downloadFilename }) } await VideoPathManager.Instance.makeAvailableVideoFile(videoFile.withVideoOrPlaylist(streamingPlaylist), path => { return res.download(path, downloadFilename) }) } function getVideoFile (req: express.Request, files: MVideoFile[]) { const resolution = forceNumber(req.params.resolution) 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 }) } type AllowedResult = { allowed: boolean errorMessage?: string } function isTorrentDownloadAllowed (_object: { torrentPath: string }): AllowedResult { return { allowed: true } } function isVideoDownloadAllowed (_object: { video: MVideo videoFile: MVideoFile streamingPlaylist?: MStreamingPlaylist }): AllowedResult { return { allowed: true } } function checkAllowResult (res: express.Response, allowParameters: any, result?: AllowedResult) { if (!result || result.allowed !== true) { logger.info('Download is not allowed.', { result, allowParameters }) res.fail({ status: HttpStatusCode.FORBIDDEN_403, message: result?.errorMessage || 'Refused download' }) return false } return true } async function redirectToObjectStorage (options: { req: express.Request res: express.Response video: MVideo file: MVideoFile streamingPlaylist?: MStreamingPlaylistVideo downloadFilename: string }) { const { res, video, streamingPlaylist, file, downloadFilename } = options const url = streamingPlaylist ? await generateHLSFilePresignedUrl({ streamingPlaylist, file, downloadFilename }) : await generateWebVideoPresignedUrl({ file, downloadFilename }) logger.debug('Generating pre-signed URL %s for video %s', url, video.uuid) return res.redirect(url) }