1 import * as createTorrent from 'create-torrent'
2 import { createWriteStream, ensureDir, remove, writeFile } from 'fs-extra'
3 import * as magnetUtil from 'magnet-uri'
4 import * as parseTorrent from 'parse-torrent'
5 import { dirname, join } from 'path'
6 import * as WebTorrent from 'webtorrent'
7 import { isArray } from '@server/helpers/custom-validators/misc'
8 import { WEBSERVER } from '@server/initializers/constants'
9 import { generateTorrentFileName, getVideoFilePath } from '@server/lib/video-paths'
10 import { MVideo } from '@server/types/models/video/video'
11 import { MVideoFile, MVideoFileRedundanciesOpt } from '@server/types/models/video/video-file'
12 import { MStreamingPlaylistVideo } from '@server/types/models/video/video-streaming-playlist'
13 import { CONFIG } from '../initializers/config'
14 import { promisify2 } from './core-utils'
15 import { logger } from './logger'
16 import { generateVideoImportTmpPath } from './utils'
17 import { extractVideo } from './video'
19 const createTorrentPromise = promisify2<string, any, any>(createTorrent)
21 async function downloadWebTorrentVideo (target: { magnetUri: string, torrentName?: string }, timeout: number) {
22 const id = target.magnetUri || target.torrentName
25 const path = generateVideoImportTmpPath(id)
26 logger.info('Importing torrent video %s', id)
28 const directoryPath = join(CONFIG.STORAGE.TMP_DIR, 'webtorrent')
29 await ensureDir(directoryPath)
31 return new Promise<string>((res, rej) => {
32 const webtorrent = new WebTorrent()
33 let file: WebTorrent.TorrentFile
35 const torrentId = target.magnetUri || join(CONFIG.STORAGE.TORRENTS_DIR, target.torrentName)
37 const options = { path: directoryPath }
38 const torrent = webtorrent.add(torrentId, options, torrent => {
39 if (torrent.files.length !== 1) {
40 if (timer) clearTimeout(timer)
42 for (const file of torrent.files) {
43 deleteDownloadedFile({ directoryPath, filepath: file.path })
46 return safeWebtorrentDestroy(webtorrent, torrentId, undefined, target.torrentName)
47 .then(() => rej(new Error('Cannot import torrent ' + torrentId + ': there are multiple files in it')))
50 file = torrent.files[0]
52 // FIXME: avoid creating another stream when https://github.com/webtorrent/webtorrent/issues/1517 is fixed
53 const writeStream = createWriteStream(path)
54 writeStream.on('finish', () => {
55 if (timer) clearTimeout(timer)
57 safeWebtorrentDestroy(webtorrent, torrentId, { directoryPath, filepath: file.path }, target.torrentName)
58 .then(() => res(path))
59 .catch(err => logger.error('Cannot destroy webtorrent.', { err }))
62 file.createReadStream().pipe(writeStream)
65 torrent.on('error', err => rej(err))
67 timer = setTimeout(() => {
68 const err = new Error('Webtorrent download timeout.')
70 safeWebtorrentDestroy(webtorrent, torrentId, file ? { directoryPath, filepath: file.path } : undefined, target.torrentName)
72 .catch(destroyErr => {
73 logger.error('Cannot destroy webtorrent.', { err: destroyErr })
81 async function createTorrentAndSetInfoHash (
82 videoOrPlaylist: MVideo | MStreamingPlaylistVideo,
85 const video = extractVideo(videoOrPlaylist)
88 // Keep the extname, it's used by the client to stream the file inside a web browser
89 name: `${video.name} ${videoFile.resolution}p${videoFile.extname}`,
90 createdBy: 'PeerTube',
92 [ WEBSERVER.WS + '://' + WEBSERVER.HOSTNAME + ':' + WEBSERVER.PORT + '/tracker/socket' ],
93 [ WEBSERVER.URL + '/tracker/announce' ]
95 urlList: [ videoFile.getFileUrl(video) ]
98 const torrent = await createTorrentPromise(getVideoFilePath(videoOrPlaylist, videoFile), options)
100 const torrentFilename = generateTorrentFileName(videoOrPlaylist, videoFile.resolution)
101 const torrentPath = join(CONFIG.STORAGE.TORRENTS_DIR, torrentFilename)
102 logger.info('Creating torrent %s.', torrentPath)
104 await writeFile(torrentPath, torrent)
106 const parsedTorrent = parseTorrent(torrent)
107 videoFile.infoHash = parsedTorrent.infoHash
108 videoFile.torrentFilename = torrentFilename
111 function generateMagnetUri (
113 videoFile: MVideoFileRedundanciesOpt,
114 trackerUrls: string[]
116 const xs = videoFile.getTorrentUrl()
117 const announce = trackerUrls
118 let urlList = [ videoFile.getFileUrl(video) ]
120 const redundancies = videoFile.RedundancyVideos
121 if (isArray(redundancies)) urlList = urlList.concat(redundancies.map(r => r.fileUrl))
127 infoHash: videoFile.infoHash,
131 return magnetUtil.encode(magnetHash)
134 // ---------------------------------------------------------------------------
137 createTorrentPromise,
138 createTorrentAndSetInfoHash,
140 downloadWebTorrentVideo
143 // ---------------------------------------------------------------------------
145 function safeWebtorrentDestroy (
146 webtorrent: WebTorrent.Instance,
148 downloadedFile?: { directoryPath: string, filepath: string },
151 return new Promise<void>(res => {
152 webtorrent.destroy(err => {
153 // Delete torrent file
155 logger.debug('Removing %s torrent after webtorrent download.', torrentId)
157 .catch(err => logger.error('Cannot remove torrent %s in webtorrent download.', torrentId, { err }))
160 // Delete downloaded file
161 if (downloadedFile) deleteDownloadedFile(downloadedFile)
163 if (err) logger.warn('Cannot destroy webtorrent in timeout.', { err })
170 function deleteDownloadedFile (downloadedFile: { directoryPath: string, filepath: string }) {
171 // We want to delete the base directory
172 let pathToDelete = dirname(downloadedFile.filepath)
173 if (pathToDelete === '.') pathToDelete = downloadedFile.filepath
175 const toRemovePath = join(downloadedFile.directoryPath, pathToDelete)
177 logger.debug('Removing %s after webtorrent download.', toRemovePath)
179 .catch(err => logger.error('Cannot remove torrent file %s in webtorrent download.', toRemovePath, { err }))