import * as createTorrent from 'create-torrent' import { createWriteStream, ensureDir, remove, writeFile } from 'fs-extra' import * as magnetUtil from 'magnet-uri' import * as parseTorrent from 'parse-torrent' import { dirname, join } from 'path' import * as WebTorrent from 'webtorrent' import { isArray } from '@server/helpers/custom-validators/misc' import { WEBSERVER } from '@server/initializers/constants' import { generateTorrentFileName, getVideoFilePath } from '@server/lib/video-paths' import { MVideo } from '@server/types/models/video/video' import { MVideoFile, MVideoFileRedundanciesOpt } from '@server/types/models/video/video-file' import { MStreamingPlaylistVideo } from '@server/types/models/video/video-streaming-playlist' import { CONFIG } from '../initializers/config' import { promisify2 } from './core-utils' import { logger } from './logger' import { generateVideoImportTmpPath } from './utils' import { extractVideo } from './video' const createTorrentPromise = promisify2(createTorrent) async function downloadWebTorrentVideo (target: { magnetUri: string, torrentName?: string }, timeout: number) { const id = target.magnetUri || target.torrentName let timer const path = generateVideoImportTmpPath(id) logger.info('Importing torrent video %s', id) const directoryPath = join(CONFIG.STORAGE.TMP_DIR, 'webtorrent') await ensureDir(directoryPath) return new Promise((res, rej) => { const webtorrent = new WebTorrent() let file: WebTorrent.TorrentFile const torrentId = target.magnetUri || join(CONFIG.STORAGE.TORRENTS_DIR, target.torrentName) const options = { path: directoryPath } const torrent = webtorrent.add(torrentId, options, torrent => { if (torrent.files.length !== 1) { if (timer) clearTimeout(timer) for (const file of torrent.files) { deleteDownloadedFile({ directoryPath, filepath: file.path }) } return safeWebtorrentDestroy(webtorrent, torrentId, undefined, target.torrentName) .then(() => rej(new Error('Cannot import torrent ' + torrentId + ': there are multiple files in it'))) } file = torrent.files[0] // FIXME: avoid creating another stream when https://github.com/webtorrent/webtorrent/issues/1517 is fixed const writeStream = createWriteStream(path) writeStream.on('finish', () => { if (timer) clearTimeout(timer) safeWebtorrentDestroy(webtorrent, torrentId, { directoryPath, filepath: file.path }, target.torrentName) .then(() => res(path)) .catch(err => logger.error('Cannot destroy webtorrent.', { err })) }) file.createReadStream().pipe(writeStream) }) torrent.on('error', err => rej(err)) timer = setTimeout(() => { const err = new Error('Webtorrent download timeout.') safeWebtorrentDestroy(webtorrent, torrentId, file ? { directoryPath, filepath: file.path } : undefined, target.torrentName) .then(() => rej(err)) .catch(destroyErr => { logger.error('Cannot destroy webtorrent.', { err: destroyErr }) rej(err) }) }, timeout) }) } async function createTorrentAndSetInfoHash ( videoOrPlaylist: MVideo | MStreamingPlaylistVideo, videoFile: MVideoFile ) { const video = extractVideo(videoOrPlaylist) const options = { // Keep the extname, it's used by the client to stream the file inside a web browser name: `${video.name} ${videoFile.resolution}p${videoFile.extname}`, createdBy: 'PeerTube', announceList: [ [ WEBSERVER.WS + '://' + WEBSERVER.HOSTNAME + ':' + WEBSERVER.PORT + '/tracker/socket' ], [ WEBSERVER.URL + '/tracker/announce' ] ], urlList: [ videoFile.getFileUrl(video) ] } const torrent = await createTorrentPromise(getVideoFilePath(videoOrPlaylist, videoFile), options) const torrentFilename = generateTorrentFileName(videoOrPlaylist, videoFile.resolution) const torrentPath = join(CONFIG.STORAGE.TORRENTS_DIR, torrentFilename) logger.info('Creating torrent %s.', torrentPath) await writeFile(torrentPath, torrent) const parsedTorrent = parseTorrent(torrent) videoFile.infoHash = parsedTorrent.infoHash videoFile.torrentFilename = torrentFilename } function generateMagnetUri ( video: MVideo, videoFile: MVideoFileRedundanciesOpt, trackerUrls: string[] ) { const xs = videoFile.getTorrentUrl() const announce = trackerUrls let urlList = [ videoFile.getFileUrl(video) ] const redundancies = videoFile.RedundancyVideos if (isArray(redundancies)) urlList = urlList.concat(redundancies.map(r => r.fileUrl)) const magnetHash = { xs, announce, urlList, infoHash: videoFile.infoHash, name: video.name } return magnetUtil.encode(magnetHash) } // --------------------------------------------------------------------------- export { createTorrentPromise, createTorrentAndSetInfoHash, generateMagnetUri, downloadWebTorrentVideo } // --------------------------------------------------------------------------- function safeWebtorrentDestroy ( webtorrent: WebTorrent.Instance, torrentId: string, downloadedFile?: { directoryPath: string, filepath: string }, torrentName?: string ) { return new Promise(res => { webtorrent.destroy(err => { // Delete torrent file if (torrentName) { logger.debug('Removing %s torrent after webtorrent download.', torrentId) remove(torrentId) .catch(err => logger.error('Cannot remove torrent %s in webtorrent download.', torrentId, { err })) } // Delete downloaded file if (downloadedFile) deleteDownloadedFile(downloadedFile) if (err) logger.warn('Cannot destroy webtorrent in timeout.', { err }) return res() }) }) } function deleteDownloadedFile (downloadedFile: { directoryPath: string, filepath: string }) { // We want to delete the base directory let pathToDelete = dirname(downloadedFile.filepath) if (pathToDelete === '.') pathToDelete = downloadedFile.filepath const toRemovePath = join(downloadedFile.directoryPath, pathToDelete) logger.debug('Removing %s after webtorrent download.', toRemovePath) remove(toRemovePath) .catch(err => logger.error('Cannot remove torrent file %s in webtorrent download.', toRemovePath, { err })) }