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