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1 | import { logger } from './logger' | |
2 | import { generateVideoImportTmpPath } from './utils' | |
3 | import * as WebTorrent from 'webtorrent' | |
4 | import { createWriteStream, ensureDir, remove, writeFile } from 'fs-extra' | |
5 | import { CONFIG } from '../initializers/config' | |
6 | import { dirname, join } from 'path' | |
7 | import * as createTorrent from 'create-torrent' | |
8 | import { promisify2 } from './core-utils' | |
9 | import { MVideo } from '@server/typings/models/video/video' | |
10 | import { MVideoFile, MVideoFileRedundanciesOpt } from '@server/typings/models/video/video-file' | |
11 | import { isStreamingPlaylist, MStreamingPlaylistVideo } from '@server/typings/models/video/video-streaming-playlist' | |
12 | import { WEBSERVER } from '@server/initializers/constants' | |
13 | import * as parseTorrent from 'parse-torrent' | |
14 | import * as magnetUtil from 'magnet-uri' | |
15 | import { isArray } from '@server/helpers/custom-validators/misc' | |
16 | import { extractVideo } from '@server/lib/videos' | |
17 | import { getTorrentFileName, getVideoFilePath } from '@server/lib/video-paths' | |
18 | ||
19 | const createTorrentPromise = promisify2<string, any, any>(createTorrent) | |
20 | ||
21 | async function downloadWebTorrentVideo (target: { magnetUri: string, torrentName?: string }, timeout: number) { | |
22 | const id = target.magnetUri || target.torrentName | |
23 | let timer | |
24 | ||
25 | const path = generateVideoImportTmpPath(id) | |
26 | logger.info('Importing torrent video %s', id) | |
27 | ||
28 | const directoryPath = join(CONFIG.STORAGE.TMP_DIR, 'webtorrent') | |
29 | await ensureDir(directoryPath) | |
30 | ||
31 | return new Promise<string>((res, rej) => { | |
32 | const webtorrent = new WebTorrent() | |
33 | let file: WebTorrent.TorrentFile | |
34 | ||
35 | const torrentId = target.magnetUri || join(CONFIG.STORAGE.TORRENTS_DIR, target.torrentName) | |
36 | ||
37 | const options = { path: directoryPath } | |
38 | const torrent = webtorrent.add(torrentId, options, torrent => { | |
39 | if (torrent.files.length !== 1) { | |
40 | if (timer) clearTimeout(timer) | |
41 | ||
42 | for (const file of torrent.files) { | |
43 | deleteDownloadedFile({ directoryPath, filepath: file.path }) | |
44 | } | |
45 | ||
46 | return safeWebtorrentDestroy(webtorrent, torrentId, undefined, target.torrentName) | |
47 | .then(() => rej(new Error('Cannot import torrent ' + torrentId + ': there are multiple files in it'))) | |
48 | } | |
49 | ||
50 | file = torrent.files[0] | |
51 | ||
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) | |
56 | ||
57 | safeWebtorrentDestroy(webtorrent, torrentId, { directoryPath, filepath: file.path }, target.torrentName) | |
58 | .then(() => res(path)) | |
59 | .catch(err => logger.error('Cannot destroy webtorrent.', { err })) | |
60 | }) | |
61 | ||
62 | file.createReadStream().pipe(writeStream) | |
63 | }) | |
64 | ||
65 | torrent.on('error', err => rej(err)) | |
66 | ||
67 | timer = setTimeout(() => { | |
68 | const err = new Error('Webtorrent download timeout.') | |
69 | ||
70 | safeWebtorrentDestroy(webtorrent, torrentId, file ? { directoryPath, filepath: file.path } : undefined, target.torrentName) | |
71 | .then(() => rej(err)) | |
72 | .catch(destroyErr => { | |
73 | logger.error('Cannot destroy webtorrent.', { err: destroyErr }) | |
74 | rej(err) | |
75 | }) | |
76 | ||
77 | }, timeout) | |
78 | }) | |
79 | } | |
80 | ||
81 | async function createTorrentAndSetInfoHash (videoOrPlaylist: MVideo | MStreamingPlaylistVideo, videoFile: MVideoFile) { | |
82 | const video = extractVideo(videoOrPlaylist) | |
83 | const { baseUrlHttp } = video.getBaseUrls() | |
84 | ||
85 | const options = { | |
86 | // Keep the extname, it's used by the client to stream the file inside a web browser | |
87 | name: `${video.name} ${videoFile.resolution}p${videoFile.extname}`, | |
88 | createdBy: 'PeerTube', | |
89 | announceList: [ | |
90 | [ WEBSERVER.WS + '://' + WEBSERVER.HOSTNAME + ':' + WEBSERVER.PORT + '/tracker/socket' ], | |
91 | [ WEBSERVER.URL + '/tracker/announce' ] | |
92 | ], | |
93 | urlList: [ videoOrPlaylist.getVideoFileUrl(videoFile, baseUrlHttp) ] | |
94 | } | |
95 | ||
96 | const torrent = await createTorrentPromise(getVideoFilePath(videoOrPlaylist, videoFile), options) | |
97 | ||
98 | const filePath = join(CONFIG.STORAGE.TORRENTS_DIR, getTorrentFileName(videoOrPlaylist, videoFile)) | |
99 | logger.info('Creating torrent %s.', filePath) | |
100 | ||
101 | await writeFile(filePath, torrent) | |
102 | ||
103 | const parsedTorrent = parseTorrent(torrent) | |
104 | videoFile.infoHash = parsedTorrent.infoHash | |
105 | } | |
106 | ||
107 | function generateMagnetUri ( | |
108 | videoOrPlaylist: MVideo | MStreamingPlaylistVideo, | |
109 | videoFile: MVideoFileRedundanciesOpt, | |
110 | baseUrlHttp: string, | |
111 | baseUrlWs: string | |
112 | ) { | |
113 | const video = isStreamingPlaylist(videoOrPlaylist) | |
114 | ? videoOrPlaylist.Video | |
115 | : videoOrPlaylist | |
116 | ||
117 | const xs = videoOrPlaylist.getTorrentUrl(videoFile, baseUrlHttp) | |
118 | const announce = videoOrPlaylist.getTrackerUrls(baseUrlHttp, baseUrlWs) | |
119 | let urlList = [ videoOrPlaylist.getVideoFileUrl(videoFile, baseUrlHttp) ] | |
120 | ||
121 | const redundancies = videoFile.RedundancyVideos | |
122 | if (isArray(redundancies)) urlList = urlList.concat(redundancies.map(r => r.fileUrl)) | |
123 | ||
124 | const magnetHash = { | |
125 | xs, | |
126 | announce, | |
127 | urlList, | |
128 | infoHash: videoFile.infoHash, | |
129 | name: video.name | |
130 | } | |
131 | ||
132 | return magnetUtil.encode(magnetHash) | |
133 | } | |
134 | ||
135 | // --------------------------------------------------------------------------- | |
136 | ||
137 | export { | |
138 | createTorrentPromise, | |
139 | createTorrentAndSetInfoHash, | |
140 | generateMagnetUri, | |
141 | downloadWebTorrentVideo | |
142 | } | |
143 | ||
144 | // --------------------------------------------------------------------------- | |
145 | ||
146 | function safeWebtorrentDestroy ( | |
147 | webtorrent: WebTorrent.Instance, | |
148 | torrentId: string, | |
149 | downloadedFile?: { directoryPath: string, filepath: string }, | |
150 | torrentName?: string | |
151 | ) { | |
152 | return new Promise(res => { | |
153 | webtorrent.destroy(err => { | |
154 | // Delete torrent file | |
155 | if (torrentName) { | |
156 | logger.debug('Removing %s torrent after webtorrent download.', torrentId) | |
157 | remove(torrentId) | |
158 | .catch(err => logger.error('Cannot remove torrent %s in webtorrent download.', torrentId, { err })) | |
159 | } | |
160 | ||
161 | // Delete downloaded file | |
162 | if (downloadedFile) deleteDownloadedFile(downloadedFile) | |
163 | ||
164 | if (err) logger.warn('Cannot destroy webtorrent in timeout.', { err }) | |
165 | ||
166 | return res() | |
167 | }) | |
168 | }) | |
169 | } | |
170 | ||
171 | function deleteDownloadedFile (downloadedFile: { directoryPath: string, filepath: string }) { | |
172 | // We want to delete the base directory | |
173 | let pathToDelete = dirname(downloadedFile.filepath) | |
174 | if (pathToDelete === '.') pathToDelete = downloadedFile.filepath | |
175 | ||
176 | const toRemovePath = join(downloadedFile.directoryPath, pathToDelete) | |
177 | ||
178 | logger.debug('Removing %s after webtorrent download.', toRemovePath) | |
179 | remove(toRemovePath) | |
180 | .catch(err => logger.error('Cannot remove torrent file %s in webtorrent download.', toRemovePath, { err })) | |
181 | } |