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