1 import { join } from 'path'
2 import { JobType, VideoRateType, VideoResolution, VideoState } from '../../shared/models'
3 import { ActivityPubActorType } from '../../shared/models/activitypub'
4 import { FollowState } from '../../shared/models/actors'
5 import { VideoAbuseState, VideoImportState, VideoPrivacy, VideoTranscodingFPS } from '../../shared/models/videos'
6 // Do not use barrels, remain constants as independent as possible
7 import { isTestInstance, sanitizeHost, sanitizeUrl, root } from '../helpers/core-utils'
8 import { NSFWPolicyType } from '../../shared/models/videos/nsfw-policy.type'
9 import { invert } from 'lodash'
10 import { CronRepeatOptions, EveryRepeatOptions } from 'bull'
11 import { VideoPlaylistPrivacy } from '../../shared/models/videos/playlist/video-playlist-privacy.model'
12 import { VideoPlaylistType } from '../../shared/models/videos/playlist/video-playlist-type.model'
13 import { CONFIG, registerConfigChangedHandler } from './config'
15 // ---------------------------------------------------------------------------
17 const LAST_MIGRATION_VERSION = 395
19 // ---------------------------------------------------------------------------
22 const API_VERSION = 'v1'
40 // Sortable columns per schema
41 const SORTABLE_COLUMNS = {
42 USERS: [ 'id', 'username', 'createdAt' ],
43 USER_SUBSCRIPTIONS: [ 'id', 'createdAt' ],
44 ACCOUNTS: [ 'createdAt' ],
45 JOBS: [ 'createdAt' ],
46 VIDEO_ABUSES: [ 'id', 'createdAt', 'state' ],
47 VIDEO_CHANNELS: [ 'id', 'name', 'updatedAt', 'createdAt' ],
48 VIDEO_IMPORTS: [ 'createdAt' ],
49 VIDEO_COMMENT_THREADS: [ 'createdAt' ],
50 VIDEO_RATES: [ 'createdAt' ],
51 BLACKLISTS: [ 'id', 'name', 'duration', 'views', 'likes', 'dislikes', 'uuid', 'createdAt' ],
52 FOLLOWERS: [ 'createdAt' ],
53 FOLLOWING: [ 'createdAt' ],
55 VIDEOS: [ 'name', 'duration', 'createdAt', 'publishedAt', 'views', 'likes', 'trending' ],
57 VIDEOS_SEARCH: [ 'name', 'duration', 'createdAt', 'publishedAt', 'views', 'likes', 'match' ],
58 VIDEO_CHANNELS_SEARCH: [ 'match', 'displayName', 'createdAt' ],
60 ACCOUNTS_BLOCKLIST: [ 'createdAt' ],
61 SERVERS_BLOCKLIST: [ 'createdAt' ],
63 USER_NOTIFICATIONS: [ 'createdAt' ],
65 VIDEO_PLAYLISTS: [ 'displayName', 'createdAt', 'updatedAt' ]
68 const OAUTH_LIFETIME = {
69 ACCESS_TOKEN: 3600 * 24, // 1 day, for upload
70 REFRESH_TOKEN: 1209600 // 2 weeks
73 const ROUTE_CACHE_LIFETIME = {
77 SECURITYTXT: '2 hours',
78 NODEINFO: '10 minutes',
84 VIDEOS: '1 second' // 1 second, cache concurrent requests after a broadcast for example
89 // ---------------------------------------------------------------------------
91 // Number of points we add/remove after a successful/bad request
92 const ACTOR_FOLLOW_SCORE = {
99 const FOLLOW_STATES: { [ id: string ]: FollowState } = {
104 const REMOTE_SCHEME = {
109 // TODO: remove 'video-file'
110 const JOB_ATTEMPTS: { [id in (JobType | 'video-file')]: number } = {
111 'activitypub-http-broadcast': 5,
112 'activitypub-http-unicast': 5,
113 'activitypub-http-fetcher': 5,
114 'activitypub-follow': 5,
115 'video-file-import': 1,
116 'video-transcoding': 1,
121 'activitypub-refresher': 1
123 const JOB_CONCURRENCY: { [id in (JobType | 'video-file')]: number } = {
124 'activitypub-http-broadcast': 1,
125 'activitypub-http-unicast': 5,
126 'activitypub-http-fetcher': 1,
127 'activitypub-follow': 3,
128 'video-file-import': 1,
129 'video-transcoding': 1,
134 'activitypub-refresher': 1
136 const JOB_TTL: { [id in (JobType | 'video-file')]: number } = {
137 'activitypub-http-broadcast': 60000 * 10, // 10 minutes
138 'activitypub-http-unicast': 60000 * 10, // 10 minutes
139 'activitypub-http-fetcher': 60000 * 10, // 10 minutes
140 'activitypub-follow': 60000 * 10, // 10 minutes
141 'video-file-import': 1000 * 3600, // 1 hour
142 'video-transcoding': 1000 * 3600 * 48, // 2 days, transcoding could be long
143 'video-file': 1000 * 3600 * 48, // 2 days, transcoding could be long
144 'video-import': 1000 * 3600 * 2, // hours
145 'email': 60000 * 10, // 10 minutes
146 'videos-views': undefined, // Unlimited
147 'activitypub-refresher': 60000 * 10 // 10 minutes
149 const REPEAT_JOBS: { [ id: string ]: EveryRepeatOptions | CronRepeatOptions } = {
151 cron: '1 * * * *' // At 1 minute past the hour
155 const BROADCAST_CONCURRENCY = 10 // How many requests in parallel we do in activitypub-http-broadcast job
156 const CRAWL_REQUEST_CONCURRENCY = 1 // How many requests in parallel to fetch remote data (likes, shares...)
157 const JOB_REQUEST_TIMEOUT = 3000 // 3 seconds
158 const JOB_COMPLETED_LIFETIME = 60000 * 60 * 24 * 2 // 2 days
159 const VIDEO_IMPORT_TIMEOUT = 1000 * 3600 // 1 hour
161 const SCHEDULER_INTERVALS_MS = {
162 actorFollowScores: 60000 * 60, // 1 hour
163 removeOldJobs: 60000 * 60, // 1 hour
164 updateVideos: 60000, // 1 minute
165 youtubeDLUpdate: 60000 * 60 * 24, // 1 day
166 removeOldViews: 60000 * 60 * 24, // 1 day
167 removeOldHistory: 60000 * 60 * 24 // 1 day
170 // ---------------------------------------------------------------------------
172 let CONSTRAINTS_FIELDS = {
174 NAME: { min: 1, max: 120 }, // Length
175 DESCRIPTION: { min: 3, max: 1000 }, // Length
176 USERNAME: { min: 1, max: 50 }, // Length
177 PASSWORD: { min: 6, max: 255 }, // Length
178 VIDEO_QUOTA: { min: -1 },
179 VIDEO_QUOTA_DAILY: { min: -1 },
180 VIDEO_LANGUAGES: { max: 500 }, // Array length
181 BLOCKED_REASON: { min: 3, max: 250 } // Length
184 REASON: { min: 2, max: 3000 }, // Length
185 MODERATION_COMMENT: { min: 2, max: 3000 } // Length
188 REASON: { min: 2, max: 300 } // Length
191 NAME: { min: 1, max: 120 }, // Length
192 DESCRIPTION: { min: 3, max: 1000 }, // Length
193 SUPPORT: { min: 3, max: 1000 }, // Length
194 URL: { min: 3, max: 2000 } // Length
198 EXTNAME: [ '.vtt', '.srt' ],
200 max: 2 * 1024 * 1024 // 2MB
205 URL: { min: 3, max: 2000 }, // Length
206 TORRENT_NAME: { min: 3, max: 255 }, // Length
208 EXTNAME: [ '.torrent' ],
210 max: 1024 * 200 // 200 KB
215 URL: { min: 3, max: 2000 } // Length
218 URL: { min: 3, max: 2000 } // Length
221 NAME: { min: 3, max: 120 }, // Length
222 LANGUAGE: { min: 1, max: 10 }, // Length
223 TRUNCATED_DESCRIPTION: { min: 3, max: 250 }, // Length
224 DESCRIPTION: { min: 3, max: 10000 }, // Length
225 SUPPORT: { min: 3, max: 1000 }, // Length
227 EXTNAME: [ '.jpg', '.jpeg' ],
229 max: 2 * 1024 * 1024 // 2MB
232 EXTNAME: [] as string[],
233 INFO_HASH: { min: 40, max: 40 }, // Length, info hash is 20 bytes length but we represent it in hexadecimal so 20 * 2
234 DURATION: { min: 0 }, // Number
235 TAGS: { min: 0, max: 5 }, // Number of total tags
236 TAG: { min: 2, max: 30 }, // Length
237 THUMBNAIL: { min: 2, max: 30 },
238 THUMBNAIL_DATA: { min: 0, max: 20000 }, // Bytes
241 DISLIKES: { min: 0 },
242 FILE_SIZE: { min: 10 },
243 URL: { min: 3, max: 2000 } // Length
246 NAME: { min: 1, max: 120 }, // Length
247 DESCRIPTION: { min: 3, max: 1000 }, // Length
248 URL: { min: 3, max: 2000 }, // Length
250 EXTNAME: [ '.jpg', '.jpeg' ],
252 max: 2 * 1024 * 1024 // 2MB
257 PUBLIC_KEY: { min: 10, max: 5000 }, // Length
258 PRIVATE_KEY: { min: 10, max: 5000 }, // Length
259 URL: { min: 3, max: 2000 }, // Length
261 EXTNAME: [ '.png', '.jpeg', '.jpg' ],
263 max: 2 * 1024 * 1024 // 2MB
271 TEXT: { min: 1, max: 3000 }, // Length
272 URL: { min: 3, max: 2000 } // Length
275 URL: { min: 3, max: 2000 } // Length
278 FROM_NAME: { min: 1, max: 120 }, // Length
279 BODY: { min: 3, max: 5000 } // Length
283 const RATES_LIMIT = {
285 WINDOW_MS: CONFIG.RATES_LIMIT.LOGIN.WINDOW_MS,
286 MAX: CONFIG.RATES_LIMIT.LOGIN.MAX
289 WINDOW_MS: CONFIG.RATES_LIMIT.ASK_SEND_EMAIL.WINDOW_MS,
290 MAX: CONFIG.RATES_LIMIT.ASK_SEND_EMAIL.MAX
294 let VIDEO_VIEW_LIFETIME = 60000 * 60 // 1 hour
295 let CONTACT_FORM_LIFETIME = 60000 * 60 // 1 hour
297 const VIDEO_TRANSCODING_FPS: VideoTranscodingFPS = {
301 KEEP_ORIGIN_FPS_RESOLUTION_MIN: 720 // We keep the original FPS on high resolutions (720 minimum)
304 const DEFAULT_AUDIO_RESOLUTION = VideoResolution.H_480P
306 const VIDEO_RATE_TYPES: { [ id: string ]: VideoRateType } = {
311 const FFMPEG_NICE: { [ id: string ]: number } = {
312 THUMBNAIL: 2, // 2 just for don't blocking servers
316 const VIDEO_CATEGORIES = {
327 11: 'News & Politics',
331 15: 'Science & Technology',
337 // See https://creativecommons.org/licenses/?lang=en
338 const VIDEO_LICENCES = {
340 2: 'Attribution - Share Alike',
341 3: 'Attribution - No Derivatives',
342 4: 'Attribution - Non Commercial',
343 5: 'Attribution - Non Commercial - Share Alike',
344 6: 'Attribution - Non Commercial - No Derivatives',
345 7: 'Public Domain Dedication'
348 let VIDEO_LANGUAGES: { [id: string]: string } = {}
350 const VIDEO_PRIVACIES = {
351 [ VideoPrivacy.PUBLIC ]: 'Public',
352 [ VideoPrivacy.UNLISTED ]: 'Unlisted',
353 [ VideoPrivacy.PRIVATE ]: 'Private'
356 const VIDEO_STATES = {
357 [ VideoState.PUBLISHED ]: 'Published',
358 [ VideoState.TO_TRANSCODE ]: 'To transcode',
359 [ VideoState.TO_IMPORT ]: 'To import'
362 const VIDEO_IMPORT_STATES = {
363 [ VideoImportState.FAILED ]: 'Failed',
364 [ VideoImportState.PENDING ]: 'Pending',
365 [ VideoImportState.SUCCESS ]: 'Success'
368 const VIDEO_ABUSE_STATES = {
369 [ VideoAbuseState.PENDING ]: 'Pending',
370 [ VideoAbuseState.REJECTED ]: 'Rejected',
371 [ VideoAbuseState.ACCEPTED ]: 'Accepted'
374 const VIDEO_PLAYLIST_PRIVACIES = {
375 [ VideoPlaylistPrivacy.PUBLIC ]: 'Public',
376 [ VideoPlaylistPrivacy.UNLISTED ]: 'Unlisted',
377 [ VideoPlaylistPrivacy.PRIVATE ]: 'Private'
380 const VIDEO_PLAYLIST_TYPES = {
381 [ VideoPlaylistType.REGULAR ]: 'Regular',
382 [ VideoPlaylistType.WATCH_LATER ]: 'Watch later'
388 'audio/mpeg': '.mp3',
390 'application/ogg': '.ogg',
392 'audio/flac': '.flac'
394 EXT_MIMETYPE: null as { [ id: string ]: string }
397 MIMETYPE_EXT: null as { [ id: string ]: string },
398 EXT_MIMETYPE: null as { [ id: string ]: string }
410 'application/x-subrip': '.srt'
415 'application/x-bittorrent': '.torrent'
419 MIMETYPES.AUDIO.EXT_MIMETYPE = invert(MIMETYPES.AUDIO.MIMETYPE_EXT)
421 // ---------------------------------------------------------------------------
430 // ---------------------------------------------------------------------------
432 const SERVER_ACTOR_NAME = 'peertube'
434 const ACTIVITY_PUB = {
435 POTENTIAL_ACCEPT_HEADERS: [
436 'application/activity+json',
437 'application/ld+json',
438 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'
440 ACCEPT_HEADER: 'application/activity+json, application/ld+json',
441 PUBLIC: 'https://www.w3.org/ns/activitystreams#Public',
442 COLLECTION_ITEMS_PER_PAGE: 10,
443 FETCH_PAGE_LIMIT: 100,
445 VIDEO: [] as string[],
446 TORRENT: [ 'application/x-bittorrent' ],
447 MAGNET: [ 'application/x-bittorrent;x-scheme-handler/magnet' ]
449 MAX_RECURSION_COMMENTS: 100,
450 ACTOR_REFRESH_INTERVAL: 3600 * 24 * 1000 * 2, // 2 days
451 VIDEO_REFRESH_INTERVAL: 3600 * 24 * 1000 * 2, // 2 days
452 VIDEO_PLAYLIST_REFRESH_INTERVAL: 3600 * 24 * 1000 * 2 // 2 days
455 const ACTIVITY_PUB_ACTOR_TYPES: { [ id: string ]: ActivityPubActorType } = {
458 APPLICATION: 'Application'
461 const HTTP_SIGNATURE = {
462 HEADER_NAME: 'signature',
463 ALGORITHM: 'rsa-sha256',
464 HEADERS_TO_SIGN: [ '(request-target)', 'host', 'date', 'digest' ]
467 // ---------------------------------------------------------------------------
469 let PRIVATE_RSA_KEY_SIZE = 2048
471 // Password encryption
472 const BCRYPT_SALT_SIZE = 10
474 const USER_PASSWORD_RESET_LIFETIME = 60000 * 5 // 5 minutes
476 const USER_EMAIL_VERIFY_LIFETIME = 60000 * 60 // 60 minutes
478 const NSFW_POLICY_TYPES: { [ id: string ]: NSFWPolicyType } = {
479 DO_NOT_LIST: 'do_not_list',
484 // ---------------------------------------------------------------------------
486 // Express static paths (router)
487 const STATIC_PATHS = {
488 PREVIEWS: '/static/previews/',
489 THUMBNAILS: '/static/thumbnails/',
490 TORRENTS: '/static/torrents/',
491 WEBSEED: '/static/webseed/',
492 REDUNDANCY: '/static/redundancy/',
493 STREAMING_PLAYLISTS: {
494 HLS: '/static/streaming-playlists/hls'
496 AVATARS: '/static/avatars/',
497 VIDEO_CAPTIONS: '/static/video-captions/'
499 const STATIC_DOWNLOAD_PATHS = {
500 TORRENTS: '/download/torrents/',
501 VIDEOS: '/download/videos/'
505 let STATIC_MAX_AGE = '2h'
507 // Videos thumbnail size
508 const THUMBNAILS_SIZE = {
512 const PREVIEWS_SIZE = {
516 const AVATARS_SIZE = {
526 // Sub folders of cache directory
527 const FILES_CACHE = {
529 DIRECTORY: join(CONFIG.STORAGE.CACHE_DIR, 'previews'),
530 MAX_AGE: 1000 * 3600 * 3 // 3 hours
533 DIRECTORY: join(CONFIG.STORAGE.CACHE_DIR, 'video-captions'),
534 MAX_AGE: 1000 * 3600 * 3 // 3 hours
544 const HLS_STREAMING_PLAYLIST_DIRECTORY = join(CONFIG.STORAGE.STREAMING_PLAYLISTS_DIR, 'hls')
545 const HLS_REDUNDANCY_DIRECTORY = join(CONFIG.STORAGE.REDUNDANCY_DIR, 'hls')
547 const MEMOIZE_TTL = {
548 OVERVIEWS_SAMPLE: 1000 * 3600 * 4 // 4 hours
557 const ACCEPT_HEADERS = [ 'html', 'application/json' ].concat(ACTIVITY_PUB.POTENTIAL_ACCEPT_HEADERS)
559 const ASSETS_PATH = {
560 DEFAULT_AUDIO_BACKGROUND: join(root(), 'server', 'assets', 'default-audio-background.jpg')
563 // ---------------------------------------------------------------------------
565 const CUSTOM_HTML_TAG_COMMENTS = {
566 TITLE: '<!-- title tag -->',
567 DESCRIPTION: '<!-- description tag -->',
568 CUSTOM_CSS: '<!-- custom css tag -->',
569 META_TAGS: '<!-- meta tags -->'
572 // ---------------------------------------------------------------------------
578 const MAX_LOGS_OUTPUT_CHARACTERS = 10 * 1000 * 1000
580 // ---------------------------------------------------------------------------
582 const TRACKER_RATE_LIMITS = {
583 INTERVAL: 60000 * 5, // 5 minutes
584 ANNOUNCES_PER_IP_PER_INFOHASH: 15, // maximum announces per torrent in the interval
585 ANNOUNCES_PER_IP: 30 // maximum announces for all our torrents in the interval
588 const P2P_MEDIA_LOADER_PEER_VERSION = 2
590 // ---------------------------------------------------------------------------
592 // Special constants for a test instance
593 if (isTestInstance() === true) {
594 PRIVATE_RSA_KEY_SIZE = 1024
596 ACTOR_FOLLOW_SCORE.BASE = 20
598 REMOTE_SCHEME.HTTP = 'http'
599 REMOTE_SCHEME.WS = 'ws'
603 ACTIVITY_PUB.COLLECTION_ITEMS_PER_PAGE = 2
604 ACTIVITY_PUB.ACTOR_REFRESH_INTERVAL = 10 * 1000 // 10 seconds
605 ACTIVITY_PUB.VIDEO_REFRESH_INTERVAL = 10 * 1000 // 10 seconds
606 ACTIVITY_PUB.VIDEO_PLAYLIST_REFRESH_INTERVAL = 10 * 1000 // 10 seconds
608 CONSTRAINTS_FIELDS.ACTORS.AVATAR.FILE_SIZE.max = 100 * 1024 // 100KB
610 SCHEDULER_INTERVALS_MS.actorFollowScores = 1000
611 SCHEDULER_INTERVALS_MS.removeOldJobs = 10000
612 SCHEDULER_INTERVALS_MS.removeOldHistory = 5000
613 SCHEDULER_INTERVALS_MS.removeOldViews = 5000
614 SCHEDULER_INTERVALS_MS.updateVideos = 5000
615 REPEAT_JOBS[ 'videos-views' ] = { every: 5000 }
617 REDUNDANCY.VIDEOS.RANDOMIZED_FACTOR = 1
619 VIDEO_VIEW_LIFETIME = 1000 // 1 second
620 CONTACT_FORM_LIFETIME = 1000 // 1 second
622 JOB_ATTEMPTS[ 'email' ] = 1
624 FILES_CACHE.VIDEO_CAPTIONS.MAX_AGE = 3000
625 MEMOIZE_TTL.OVERVIEWS_SAMPLE = 1
626 ROUTE_CACHE_LIFETIME.OVERVIEWS.VIDEOS = '0ms'
628 RATES_LIMIT.LOGIN.MAX = 20
631 updateWebserverUrls()
632 updateWebserverConfig()
634 registerConfigChangedHandler(() => {
635 updateWebserverUrls()
636 updateWebserverConfig()
639 // ---------------------------------------------------------------------------
644 HLS_REDUNDANCY_DIRECTORY,
645 P2P_MEDIA_LOADER_PEER_VERSION,
656 LAST_MIGRATION_VERSION,
658 CUSTOM_HTML_TAG_COMMENTS,
659 BROADCAST_CONCURRENCY,
666 PRIVATE_RSA_KEY_SIZE,
667 ROUTE_CACHE_LIFETIME,
669 HLS_STREAMING_PLAYLIST_DIRECTORY,
675 VIDEO_IMPORT_TIMEOUT,
676 VIDEO_PLAYLIST_TYPES,
677 MAX_LOGS_OUTPUT_CHARACTERS,
679 ACTIVITY_PUB_ACTOR_TYPES,
687 VIDEO_TRANSCODING_FPS,
692 USER_PASSWORD_RESET_LIFETIME,
694 USER_EMAIL_VERIFY_LIFETIME,
696 SCHEDULER_INTERVALS_MS,
698 STATIC_DOWNLOAD_PATHS,
701 CRAWL_REQUEST_CONCURRENCY,
702 DEFAULT_AUDIO_RESOLUTION,
703 JOB_COMPLETED_LIFETIME,
707 CONTACT_FORM_LIFETIME,
708 VIDEO_PLAYLIST_PRIVACIES,
714 // ---------------------------------------------------------------------------
716 function buildVideoMimetypeExt () {
718 'video/webm': '.webm',
723 if (CONFIG.TRANSCODING.ENABLED) {
724 if (CONFIG.TRANSCODING.ALLOW_ADDITIONAL_EXTENSIONS) {
725 Object.assign(data, {
726 'video/quicktime': '.mov',
727 'video/x-msvideo': '.avi',
728 'video/x-flv': '.flv',
729 'video/x-matroska': '.mkv',
730 'application/octet-stream': '.mkv',
735 if (CONFIG.TRANSCODING.ALLOW_AUDIO_FILES) {
736 Object.assign(data, MIMETYPES.AUDIO.MIMETYPE_EXT)
743 function updateWebserverUrls () {
744 WEBSERVER.URL = sanitizeUrl(CONFIG.WEBSERVER.SCHEME + '://' + CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT)
745 WEBSERVER.HOST = sanitizeHost(CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT, REMOTE_SCHEME.HTTP)
746 WEBSERVER.SCHEME = CONFIG.WEBSERVER.SCHEME
747 WEBSERVER.WS = CONFIG.WEBSERVER.WS
748 WEBSERVER.HOSTNAME = CONFIG.WEBSERVER.HOSTNAME
749 WEBSERVER.PORT = CONFIG.WEBSERVER.PORT
752 function updateWebserverConfig () {
753 MIMETYPES.VIDEO.MIMETYPE_EXT = buildVideoMimetypeExt()
754 MIMETYPES.VIDEO.EXT_MIMETYPE = invert(MIMETYPES.VIDEO.MIMETYPE_EXT)
755 ACTIVITY_PUB.URL_MIME_TYPES.VIDEO = Object.keys(MIMETYPES.VIDEO.MIMETYPE_EXT)
757 CONSTRAINTS_FIELDS.VIDEOS.EXTNAME = buildVideosExtname()
760 function buildVideosExtname () {
761 return Object.keys(MIMETYPES.VIDEO.EXT_MIMETYPE)
764 function loadLanguages () {
765 Object.assign(VIDEO_LANGUAGES, buildLanguages())
768 function buildLanguages () {
769 const iso639 = require('iso-639-3')
771 const languages: { [ id: string ]: string } = {}
773 const additionalLanguages = {
774 'sgn': true, // Sign languages (macro language)
775 'ase': true, // American sign language
776 'sdl': true, // Arabian sign language
777 'bfi': true, // British sign language
778 'bzs': true, // Brazilian sign language
779 'csl': true, // Chinese sign language
780 'cse': true, // Czech sign language
781 'dsl': true, // Danish sign language
782 'fsl': true, // French sign language
783 'gsg': true, // German sign language
784 'pks': true, // Pakistan sign language
785 'jsl': true, // Japanese sign language
786 'sfs': true, // South African sign language
787 'swl': true, // Swedish sign language
788 'rsl': true, // Russian sign language: true
790 'epo': true, // Esperanto
791 'tlh': true, // Klingon
792 'jbo': true, // Lojban
793 'avk': true // Kotava
796 // Only add ISO639-1 languages and some sign languages (ISO639-3)
799 return (l.iso6391 !== null && l.type === 'living') ||
800 additionalLanguages[ l.iso6393 ] === true
802 .forEach(l => languages[ l.iso6391 || l.iso6393 ] = l.name)
804 // Override Occitan label
805 languages[ 'oc' ] = 'Occitan'
806 languages[ 'el' ] = 'Greek'