server/initializers/constants.ts

   1 import { IConfig } from 'config'
   2 import { dirname, join } from 'path'
   3 import { JobType, VideoRateType, VideoState } from '../../shared/models'
   4 import { ActivityPubActorType } from '../../shared/models/activitypub'
   5 import { FollowState } from '../../shared/models/actors'
   6 import { VideoPrivacy } from '../../shared/models/videos'
   7 // Do not use barrels, remain constants as independent as possible
   8 import { buildPath, isTestInstance, root, sanitizeHost, sanitizeUrl } from '../helpers/core-utils'
   9 import { NSFWPolicyType } from '../../shared/models/videos/nsfw-policy.type'
  10 import { invert } from 'lodash'
  11
  12 // Use a variable to reload the configuration if we need
  13 let config: IConfig = require('config')
  14
  15 // ---------------------------------------------------------------------------
  16
  17 const LAST_MIGRATION_VERSION = 230
  18
  19 // ---------------------------------------------------------------------------
  20
  21 // API version
  22 const API_VERSION = 'v1'
  23
  24 // Number of results by default for the pagination
  25 const PAGINATION_COUNT_DEFAULT = 15
  26
  27 // Sortable columns per schema
  28 const SORTABLE_COLUMNS = {
  29   USERS: [ 'id', 'username', 'createdAt' ],
  30   ACCOUNTS: [ 'createdAt' ],
  31   JOBS: [ 'createdAt' ],
  32   VIDEO_ABUSES: [ 'id', 'createdAt' ],
  33   VIDEO_CHANNELS: [ 'id', 'name', 'updatedAt', 'createdAt' ],
  34   VIDEOS: [ 'name', 'duration', 'createdAt', 'publishedAt', 'views', 'likes' ],
  35   VIDEO_COMMENT_THREADS: [ 'createdAt' ],
  36   BLACKLISTS: [ 'id', 'name', 'duration', 'views', 'likes', 'dislikes', 'uuid', 'createdAt' ],
  37   FOLLOWERS: [ 'createdAt' ],
  38   FOLLOWING: [ 'createdAt' ]
  39 }
  40
  41 const OAUTH_LIFETIME = {
  42   ACCESS_TOKEN: 3600 * 24, // 1 day, for upload
  43   REFRESH_TOKEN: 1209600 // 2 weeks
  44 }
  45
  46 const ROUTE_CACHE_LIFETIME = {
  47   FEEDS: 1000 * 60 * 15, // 15 minutes
  48   ACTIVITY_PUB: {
  49     VIDEOS: 1000 // 1 second, cache concurrent requests after a broadcast for example
  50   }
  51 }
  52
  53 // ---------------------------------------------------------------------------
  54
  55 // Number of points we add/remove after a successful/bad request
  56 const ACTOR_FOLLOW_SCORE = {
  57   PENALTY: -10,
  58   BONUS: 10,
  59   BASE: 1000,
  60   MAX: 10000
  61 }
  62
  63 const FOLLOW_STATES: { [ id: string ]: FollowState } = {
  64   PENDING: 'pending',
  65   ACCEPTED: 'accepted'
  66 }
  67
  68 const REMOTE_SCHEME = {
  69   HTTP: 'https',
  70   WS: 'wss'
  71 }
  72
  73 const JOB_ATTEMPTS: { [ id in JobType ]: number } = {
  74   'activitypub-http-broadcast': 5,
  75   'activitypub-http-unicast': 5,
  76   'activitypub-http-fetcher': 5,
  77   'activitypub-follow': 5,
  78   'video-file-import': 1,
  79   'video-file': 1,
  80   'email': 5
  81 }
  82 const JOB_CONCURRENCY: { [ id in JobType ]: number } = {
  83   'activitypub-http-broadcast': 1,
  84   'activitypub-http-unicast': 5,
  85   'activitypub-http-fetcher': 1,
  86   'activitypub-follow': 3,
  87   'video-file-import': 1,
  88   'video-file': 1,
  89   'email': 5
  90 }
  91 const BROADCAST_CONCURRENCY = 10 // How many requests in parallel we do in activitypub-http-broadcast job
  92 const JOB_REQUEST_TIMEOUT = 3000 // 3 seconds
  93 const JOB_REQUEST_TTL = 60000 * 10 // 10 minutes
  94 const JOB_COMPLETED_LIFETIME = 60000 * 60 * 24 * 2 // 2 days
  95
  96 // 1 hour
  97 let SCHEDULER_INTERVALS_MS = {
  98   badActorFollow: 60000 * 60, // 1 hour
  99   removeOldJobs: 60000 * 60, // 1 hour
 100   updateVideos: 60000 // 1 minute
 101 }
 102
 103 // ---------------------------------------------------------------------------
 104
 105 const CONFIG = {
 106   CUSTOM_FILE: getLocalConfigFilePath(),
 107   LISTEN: {
 108     PORT: config.get<number>('listen.port'),
 109     HOSTNAME: config.get<string>('listen.hostname')
 110   },
 111   DATABASE: {
 112     DBNAME: 'peertube' + config.get<string>('database.suffix'),
 113     HOSTNAME: config.get<string>('database.hostname'),
 114     PORT: config.get<number>('database.port'),
 115     USERNAME: config.get<string>('database.username'),
 116     PASSWORD: config.get<string>('database.password')
 117   },
 118   REDIS: {
 119     HOSTNAME: config.has('redis.hostname') ? config.get<string>('redis.hostname') : null,
 120     PORT: config.has('redis.port') ? config.get<number>('redis.port') : null,
 121     SOCKET: config.has('redis.socket') ? config.get<string>('redis.socket') : null,
 122     AUTH: config.has('redis.auth') ? config.get<string>('redis.auth') : null,
 123     DB: config.has('redis.db') ? config.get<number>('redis.db') : null
 124   },
 125   SMTP: {
 126     HOSTNAME: config.get<string>('smtp.hostname'),
 127     PORT: config.get<number>('smtp.port'),
 128     USERNAME: config.get<string>('smtp.username'),
 129     PASSWORD: config.get<string>('smtp.password'),
 130     TLS: config.get<boolean>('smtp.tls'),
 131     DISABLE_STARTTLS: config.get<boolean>('smtp.disable_starttls'),
 132     CA_FILE: config.get<string>('smtp.ca_file'),
 133     FROM_ADDRESS: config.get<string>('smtp.from_address')
 134   },
 135   STORAGE: {
 136     AVATARS_DIR: buildPath(config.get<string>('storage.avatars')),
 137     LOG_DIR: buildPath(config.get<string>('storage.logs')),
 138     VIDEOS_DIR: buildPath(config.get<string>('storage.videos')),
 139     THUMBNAILS_DIR: buildPath(config.get<string>('storage.thumbnails')),
 140     PREVIEWS_DIR: buildPath(config.get<string>('storage.previews')),
 141     TORRENTS_DIR: buildPath(config.get<string>('storage.torrents')),
 142     CACHE_DIR: buildPath(config.get<string>('storage.cache'))
 143   },
 144   WEBSERVER: {
 145     SCHEME: config.get<boolean>('webserver.https') === true ? 'https' : 'http',
 146     WS: config.get<boolean>('webserver.https') === true ? 'wss' : 'ws',
 147     HOSTNAME: config.get<string>('webserver.hostname'),
 148     PORT: config.get<number>('webserver.port'),
 149     URL: '',
 150     HOST: ''
 151   },
 152   TRUST_PROXY: config.get<string[]>('trust_proxy'),
 153   LOG: {
 154     LEVEL: config.get<string>('log.level')
 155   },
 156   ADMIN: {
 157     get EMAIL () { return config.get<string>('admin.email') }
 158   },
 159   SIGNUP: {
 160     get ENABLED () { return config.get<boolean>('signup.enabled') },
 161     get LIMIT () { return config.get<number>('signup.limit') },
 162     FILTERS: {
 163       CIDR: {
 164         get WHITELIST () { return config.get<string[]>('signup.filters.cidr.whitelist') },
 165         get BLACKLIST () { return config.get<string[]>('signup.filters.cidr.blacklist') }
 166       }
 167     }
 168   },
 169   USER: {
 170     get VIDEO_QUOTA () { return config.get<number>('user.video_quota') }
 171   },
 172   TRANSCODING: {
 173     get ENABLED () { return config.get<boolean>('transcoding.enabled') },
 174     get THREADS () { return config.get<number>('transcoding.threads') },
 175     RESOLUTIONS: {
 176       get '240p' () { return config.get<boolean>('transcoding.resolutions.240p') },
 177       get '360p' () { return config.get<boolean>('transcoding.resolutions.360p') },
 178       get '480p' () { return config.get<boolean>('transcoding.resolutions.480p') },
 179       get '720p' () { return config.get<boolean>('transcoding.resolutions.720p') },
 180       get '1080p' () { return config.get<boolean>('transcoding.resolutions.1080p') }
 181     }
 182   },
 183   CACHE: {
 184     PREVIEWS: {
 185       get SIZE () { return config.get<number>('cache.previews.size') }
 186     }
 187   },
 188   INSTANCE: {
 189     get NAME () { return config.get<string>('instance.name') },
 190     get SHORT_DESCRIPTION () { return config.get<string>('instance.short_description') },
 191     get DESCRIPTION () { return config.get<string>('instance.description') },
 192     get TERMS () { return config.get<string>('instance.terms') },
 193     get DEFAULT_CLIENT_ROUTE () { return config.get<string>('instance.default_client_route') },
 194     get DEFAULT_NSFW_POLICY () { return config.get<NSFWPolicyType>('instance.default_nsfw_policy') },
 195     CUSTOMIZATIONS: {
 196       get JAVASCRIPT () { return config.get<string>('instance.customizations.javascript') },
 197       get CSS () { return config.get<string>('instance.customizations.css') }
 198     },
 199     get ROBOTS () { return config.get<string>('instance.robots') }
 200   },
 201   SERVICES: {
 202     TWITTER: {
 203       get USERNAME () { return config.get<string>('services.twitter.username') },
 204       get WHITELISTED () { return config.get<boolean>('services.twitter.whitelisted') }
 205     }
 206   }
 207 }
 208
 209 // ---------------------------------------------------------------------------
 210
 211 const CONSTRAINTS_FIELDS = {
 212   USERS: {
 213     NAME: { min: 3, max: 120 }, // Length
 214     DESCRIPTION: { min: 3, max: 250 }, // Length
 215     USERNAME: { min: 3, max: 20 }, // Length
 216     PASSWORD: { min: 6, max: 255 }, // Length
 217     VIDEO_QUOTA: { min: -1 }
 218   },
 219   VIDEO_ABUSES: {
 220     REASON: { min: 2, max: 300 } // Length
 221   },
 222   VIDEO_CHANNELS: {
 223     NAME: { min: 3, max: 120 }, // Length
 224     DESCRIPTION: { min: 3, max: 500 }, // Length
 225     SUPPORT: { min: 3, max: 500 }, // Length
 226     URL: { min: 3, max: 2000 } // Length
 227   },
 228   VIDEOS: {
 229     NAME: { min: 3, max: 120 }, // Length
 230     LANGUAGE: { min: 1, max: 10 }, // Length
 231     TRUNCATED_DESCRIPTION: { min: 3, max: 250 }, // Length
 232     DESCRIPTION: { min: 3, max: 10000 }, // Length
 233     SUPPORT: { min: 3, max: 500 }, // Length
 234     IMAGE: {
 235       EXTNAME: [ '.jpg', '.jpeg' ],
 236       FILE_SIZE: {
 237         max: 2 * 1024 * 1024 // 2MB
 238       }
 239     },
 240     EXTNAME: [ '.mp4', '.ogv', '.webm' ],
 241     INFO_HASH: { min: 40, max: 40 }, // Length, info hash is 20 bytes length but we represent it in hexadecimal so 20 * 2
 242     DURATION: { min: 1 }, // Number
 243     TAGS: { min: 0, max: 5 }, // Number of total tags
 244     TAG: { min: 2, max: 30 }, // Length
 245     THUMBNAIL: { min: 2, max: 30 },
 246     THUMBNAIL_DATA: { min: 0, max: 20000 }, // Bytes
 247     VIEWS: { min: 0 },
 248     LIKES: { min: 0 },
 249     DISLIKES: { min: 0 },
 250     FILE_SIZE: { min: 10 },
 251     URL: { min: 3, max: 2000 } // Length
 252   },
 253   ACTORS: {
 254     PUBLIC_KEY: { min: 10, max: 5000 }, // Length
 255     PRIVATE_KEY: { min: 10, max: 5000 }, // Length
 256     URL: { min: 3, max: 2000 }, // Length
 257     AVATAR: {
 258       EXTNAME: [ '.png', '.jpeg', '.jpg' ],
 259       FILE_SIZE: {
 260         max: 2 * 1024 * 1024 // 2MB
 261       }
 262     }
 263   },
 264   VIDEO_EVENTS: {
 265     COUNT: { min: 0 }
 266   },
 267   VIDEO_COMMENTS: {
 268     TEXT: { min: 1, max: 3000 }, // Length
 269     URL: { min: 3, max: 2000 } // Length
 270   },
 271   VIDEO_SHARE: {
 272     URL: { min: 3, max: 2000 } // Length
 273   }
 274 }
 275
 276 const RATES_LIMIT = {
 277   LOGIN: {
 278     WINDOW_MS: 5 * 60 * 1000, // 5 minutes
 279     MAX: 15 // 15 attempts
 280   }
 281 }
 282
 283 let VIDEO_VIEW_LIFETIME = 60000 * 60 // 1 hour
 284 const VIDEO_TRANSCODING_FPS = {
 285   MIN: 10,
 286   AVERAGE: 30,
 287   MAX: 60,
 288   KEEP_ORIGIN_FPS_RESOLUTION_MIN: 720 // We keep the original FPS on high resolutions (720 minimum)
 289 }
 290
 291 const VIDEO_RATE_TYPES: { [ id: string ]: VideoRateType } = {
 292   LIKE: 'like',
 293   DISLIKE: 'dislike'
 294 }
 295
 296 const VIDEO_CATEGORIES = {
 297   1: 'Music',
 298   2: 'Films',
 299   3: 'Vehicles',
 300   4: 'Art',
 301   5: 'Sports',
 302   6: 'Travels',
 303   7: 'Gaming',
 304   8: 'People',
 305   9: 'Comedy',
 306   10: 'Entertainment',
 307   11: 'News',
 308   12: 'How To',
 309   13: 'Education',
 310   14: 'Activism',
 311   15: 'Science & Technology',
 312   16: 'Animals',
 313   17: 'Kids',
 314   18: 'Food'
 315 }
 316
 317 // See https://creativecommons.org/licenses/?lang=en
 318 const VIDEO_LICENCES = {
 319   1: 'Attribution',
 320   2: 'Attribution - Share Alike',
 321   3: 'Attribution - No Derivatives',
 322   4: 'Attribution - Non Commercial',
 323   5: 'Attribution - Non Commercial - Share Alike',
 324   6: 'Attribution - Non Commercial - No Derivatives',
 325   7: 'Public Domain Dedication'
 326 }
 327
 328 const VIDEO_LANGUAGES = buildLanguages()
 329
 330 const VIDEO_PRIVACIES = {
 331   [VideoPrivacy.PUBLIC]: 'Public',
 332   [VideoPrivacy.UNLISTED]: 'Unlisted',
 333   [VideoPrivacy.PRIVATE]: 'Private'
 334 }
 335
 336 const VIDEO_STATES = {
 337   [VideoState.PUBLISHED]: 'Published',
 338   [VideoState.TO_TRANSCODE]: 'To transcode'
 339 }
 340
 341 const VIDEO_MIMETYPE_EXT = {
 342   'video/webm': '.webm',
 343   'video/ogg': '.ogv',
 344   'video/mp4': '.mp4'
 345 }
 346 const VIDEO_EXT_MIMETYPE = invert(VIDEO_MIMETYPE_EXT)
 347
 348 const IMAGE_MIMETYPE_EXT = {
 349   'image/png': '.png',
 350   'image/jpg': '.jpg',
 351   'image/jpeg': '.jpg'
 352 }
 353
 354 // ---------------------------------------------------------------------------
 355
 356 const SERVER_ACTOR_NAME = 'peertube'
 357
 358 const ACTIVITY_PUB = {
 359   POTENTIAL_ACCEPT_HEADERS: [
 360     'application/activity+json',
 361     'application/ld+json',
 362     'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'
 363   ],
 364   ACCEPT_HEADER: 'application/activity+json, application/ld+json',
 365   PUBLIC: 'https://www.w3.org/ns/activitystreams#Public',
 366   COLLECTION_ITEMS_PER_PAGE: 10,
 367   FETCH_PAGE_LIMIT: 100,
 368   URL_MIME_TYPES: {
 369     VIDEO: Object.keys(VIDEO_MIMETYPE_EXT),
 370     TORRENT: [ 'application/x-bittorrent' ],
 371     MAGNET: [ 'application/x-bittorrent;x-scheme-handler/magnet' ]
 372   },
 373   MAX_RECURSION_COMMENTS: 100,
 374   ACTOR_REFRESH_INTERVAL: 3600 * 24 * 1000 // 1 day
 375 }
 376
 377 const ACTIVITY_PUB_ACTOR_TYPES: { [ id: string ]: ActivityPubActorType } = {
 378   GROUP: 'Group',
 379   PERSON: 'Person',
 380   APPLICATION: 'Application'
 381 }
 382
 383 // ---------------------------------------------------------------------------
 384
 385 const PRIVATE_RSA_KEY_SIZE = 2048
 386
 387 // Password encryption
 388 const BCRYPT_SALT_SIZE = 10
 389
 390 const USER_PASSWORD_RESET_LIFETIME = 60000 * 5 // 5 minutes
 391
 392 const NSFW_POLICY_TYPES: { [ id: string]: NSFWPolicyType } = {
 393   DO_NOT_LIST: 'do_not_list',
 394   BLUR: 'blur',
 395   DISPLAY: 'display'
 396 }
 397
 398 // ---------------------------------------------------------------------------
 399
 400 // Express static paths (router)
 401 const STATIC_PATHS = {
 402   PREVIEWS: '/static/previews/',
 403   THUMBNAILS: '/static/thumbnails/',
 404   TORRENTS: '/static/torrents/',
 405   WEBSEED: '/static/webseed/',
 406   AVATARS: '/static/avatars/'
 407 }
 408 const STATIC_DOWNLOAD_PATHS = {
 409   TORRENTS: '/download/torrents/',
 410   VIDEOS: '/download/videos/'
 411 }
 412
 413 // Cache control
 414 let STATIC_MAX_AGE = '30d'
 415
 416 // Videos thumbnail size
 417 const THUMBNAILS_SIZE = {
 418   width: 200,
 419   height: 110
 420 }
 421 const PREVIEWS_SIZE = {
 422   width: 560,
 423   height: 315
 424 }
 425 const AVATARS_SIZE = {
 426   width: 120,
 427   height: 120
 428 }
 429
 430 const EMBED_SIZE = {
 431   width: 560,
 432   height: 315
 433 }
 434
 435 // Sub folders of cache directory
 436 const CACHE = {
 437   DIRECTORIES: {
 438     PREVIEWS: join(CONFIG.STORAGE.CACHE_DIR, 'previews')
 439   }
 440 }
 441
 442 const ACCEPT_HEADERS = [ 'html', 'application/json' ].concat(ACTIVITY_PUB.POTENTIAL_ACCEPT_HEADERS)
 443
 444 // ---------------------------------------------------------------------------
 445
 446 const OPENGRAPH_AND_OEMBED_COMMENT = '<!-- open graph and oembed tags -->'
 447
 448 // ---------------------------------------------------------------------------
 449
 450 const FEEDS = {
 451   COUNT: 20
 452 }
 453
 454 // ---------------------------------------------------------------------------
 455
 456 const TRACKER_RATE_LIMITS = {
 457   INTERVAL: 60000 * 5, // 5 minutes
 458   ANNOUNCES_PER_IP_PER_INFOHASH: 15, // maximum announces per torrent in the interval
 459   ANNOUNCES_PER_IP: 30 // maximum announces for all our torrents in the interval
 460 }
 461
 462 // ---------------------------------------------------------------------------
 463
 464 // Special constants for a test instance
 465 if (isTestInstance() === true) {
 466   ACTOR_FOLLOW_SCORE.BASE = 20
 467
 468   REMOTE_SCHEME.HTTP = 'http'
 469   REMOTE_SCHEME.WS = 'ws'
 470
 471   STATIC_MAX_AGE = '0'
 472
 473   ACTIVITY_PUB.COLLECTION_ITEMS_PER_PAGE = 2
 474   ACTIVITY_PUB.ACTOR_REFRESH_INTERVAL = 10 * 1000 // 10 seconds
 475
 476   CONSTRAINTS_FIELDS.ACTORS.AVATAR.FILE_SIZE.max = 100 * 1024 // 100KB
 477
 478   SCHEDULER_INTERVALS_MS.badActorFollow = 10000
 479   SCHEDULER_INTERVALS_MS.removeOldJobs = 10000
 480   SCHEDULER_INTERVALS_MS.updateVideos = 5000
 481
 482   VIDEO_VIEW_LIFETIME = 1000 // 1 second
 483
 484   JOB_ATTEMPTS['email'] = 1
 485 }
 486
 487 updateWebserverConfig()
 488
 489 // ---------------------------------------------------------------------------
 490
 491 export {
 492   API_VERSION,
 493   AVATARS_SIZE,
 494   ACCEPT_HEADERS,
 495   BCRYPT_SALT_SIZE,
 496   TRACKER_RATE_LIMITS,
 497   CACHE,
 498   CONFIG,
 499   CONSTRAINTS_FIELDS,
 500   EMBED_SIZE,
 501   JOB_CONCURRENCY,
 502   JOB_ATTEMPTS,
 503   LAST_MIGRATION_VERSION,
 504   OAUTH_LIFETIME,
 505   OPENGRAPH_AND_OEMBED_COMMENT,
 506   BROADCAST_CONCURRENCY,
 507   PAGINATION_COUNT_DEFAULT,
 508   ACTOR_FOLLOW_SCORE,
 509   PREVIEWS_SIZE,
 510   REMOTE_SCHEME,
 511   FOLLOW_STATES,
 512   SERVER_ACTOR_NAME,
 513   PRIVATE_RSA_KEY_SIZE,
 514   ROUTE_CACHE_LIFETIME,
 515   SORTABLE_COLUMNS,
 516   FEEDS,
 517   NSFW_POLICY_TYPES,
 518   STATIC_MAX_AGE,
 519   STATIC_PATHS,
 520   ACTIVITY_PUB,
 521   ACTIVITY_PUB_ACTOR_TYPES,
 522   THUMBNAILS_SIZE,
 523   VIDEO_CATEGORIES,
 524   VIDEO_LANGUAGES,
 525   VIDEO_PRIVACIES,
 526   VIDEO_LICENCES,
 527   VIDEO_STATES,
 528   VIDEO_RATE_TYPES,
 529   VIDEO_MIMETYPE_EXT,
 530   VIDEO_TRANSCODING_FPS,
 531   JOB_REQUEST_TIMEOUT,
 532   JOB_REQUEST_TTL,
 533   USER_PASSWORD_RESET_LIFETIME,
 534   IMAGE_MIMETYPE_EXT,
 535   SCHEDULER_INTERVALS_MS,
 536   STATIC_DOWNLOAD_PATHS,
 537   RATES_LIMIT,
 538   VIDEO_EXT_MIMETYPE,
 539   JOB_COMPLETED_LIFETIME,
 540   VIDEO_VIEW_LIFETIME,
 541   buildLanguages
 542 }
 543
 544 // ---------------------------------------------------------------------------
 545
 546 function getLocalConfigFilePath () {
 547   const configSources = config.util.getConfigSources()
 548   if (configSources.length === 0) throw new Error('Invalid config source.')
 549
 550   let filename = 'local'
 551   if (process.env.NODE_ENV) filename += `-${process.env.NODE_ENV}`
 552   if (process.env.NODE_APP_INSTANCE) filename += `-${process.env.NODE_APP_INSTANCE}`
 553
 554   return join(dirname(configSources[ 0 ].name), filename + '.json')
 555 }
 556
 557 function updateWebserverConfig () {
 558   CONFIG.WEBSERVER.URL = sanitizeUrl(CONFIG.WEBSERVER.SCHEME + '://' + CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT)
 559   CONFIG.WEBSERVER.HOST = sanitizeHost(CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT, REMOTE_SCHEME.HTTP)
 560 }
 561
 562 function buildLanguages () {
 563   const iso639 = require('iso-639-3')
 564
 565   const languages: { [ id: string ]: string } = {}
 566
 567   const signLanguages = [
 568     'sgn', // Sign languages (macro language)
 569     'ase', // American
 570     'sdl', // Arabian
 571     'bfi', // British
 572     'bzs', // Brazilian
 573     'csl', // Chinese
 574     'cse', // Czech
 575     'dsl', // Danish
 576     'fsl', // French
 577     'gsg', // German
 578     'pks', // Pakistan
 579     'jsl', // Japanese
 580     'sfs', // South African
 581     'swl', // Swedish
 582     'rsl' // Russian
 583   ]
 584
 585   // Only add ISO639-1 languages and some sign languages (ISO639-3)
 586   iso639
 587     .filter(l => {
 588       return (l.iso6391 !== null && l.type === 'living') ||
 589         signLanguages.indexOf(l.iso6393) !== -1
 590     })
 591     .forEach(l => languages[l.iso6391 || l.iso6393] = l.name)
 592
 593   return languages
 594 }
 595
 596 export function reloadConfig () {
 597
 598   function directory () {
 599     if (process.env.NODE_CONFIG_DIR) {
 600       return process.env.NODE_CONFIG_DIR
 601     }
 602
 603     return join(root(), 'config')
 604   }
 605
 606   function purge () {
 607     for (const fileName in require.cache) {
 608       if (-1 === fileName.indexOf(directory())) {
 609         continue
 610       }
 611
 612       delete require.cache[fileName]
 613     }
 614
 615     delete require.cache[require.resolve('config')]
 616   }
 617
 618   purge()
 619
 620   config = require('config')
 621
 622   updateWebserverConfig()
 623 }