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     CAPTIONS_DIR: buildPath(config.get<string>('storage.captions')),
 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     VIDEO_CAPTIONS: {
 189       get SIZE () { return config.get<number>('cache.captions.size') }
 190     }
 191   },
 192   INSTANCE: {
 193     get NAME () { return config.get<string>('instance.name') },
 194     get SHORT_DESCRIPTION () { return config.get<string>('instance.short_description') },
 195     get DESCRIPTION () { return config.get<string>('instance.description') },
 196     get TERMS () { return config.get<string>('instance.terms') },
 197     get DEFAULT_CLIENT_ROUTE () { return config.get<string>('instance.default_client_route') },
 198     get DEFAULT_NSFW_POLICY () { return config.get<NSFWPolicyType>('instance.default_nsfw_policy') },
 199     CUSTOMIZATIONS: {
 200       get JAVASCRIPT () { return config.get<string>('instance.customizations.javascript') },
 201       get CSS () { return config.get<string>('instance.customizations.css') }
 202     },
 203     get ROBOTS () { return config.get<string>('instance.robots') }
 204   },
 205   SERVICES: {
 206     TWITTER: {
 207       get USERNAME () { return config.get<string>('services.twitter.username') },
 208       get WHITELISTED () { return config.get<boolean>('services.twitter.whitelisted') }
 209     }
 210   }
 211 }
 212
 213 // ---------------------------------------------------------------------------
 214
 215 const CONSTRAINTS_FIELDS = {
 216   USERS: {
 217     NAME: { min: 3, max: 120 }, // Length
 218     DESCRIPTION: { min: 3, max: 250 }, // Length
 219     USERNAME: { min: 3, max: 20 }, // Length
 220     PASSWORD: { min: 6, max: 255 }, // Length
 221     VIDEO_QUOTA: { min: -1 }
 222   },
 223   VIDEO_ABUSES: {
 224     REASON: { min: 2, max: 300 } // Length
 225   },
 226   VIDEO_CHANNELS: {
 227     NAME: { min: 3, max: 120 }, // Length
 228     DESCRIPTION: { min: 3, max: 500 }, // Length
 229     SUPPORT: { min: 3, max: 500 }, // Length
 230     URL: { min: 3, max: 2000 } // Length
 231   },
 232   VIDEO_CAPTIONS: {
 233     CAPTION_FILE: {
 234       EXTNAME: [ '.vtt' ],
 235       FILE_SIZE: {
 236         max: 2 * 1024 * 1024 // 2MB
 237       }
 238     }
 239   },
 240   VIDEOS: {
 241     NAME: { min: 3, max: 120 }, // Length
 242     LANGUAGE: { min: 1, max: 10 }, // Length
 243     TRUNCATED_DESCRIPTION: { min: 3, max: 250 }, // Length
 244     DESCRIPTION: { min: 3, max: 10000 }, // Length
 245     SUPPORT: { min: 3, max: 500 }, // Length
 246     IMAGE: {
 247       EXTNAME: [ '.jpg', '.jpeg' ],
 248       FILE_SIZE: {
 249         max: 2 * 1024 * 1024 // 2MB
 250       }
 251     },
 252     EXTNAME: [ '.mp4', '.ogv', '.webm' ],
 253     INFO_HASH: { min: 40, max: 40 }, // Length, info hash is 20 bytes length but we represent it in hexadecimal so 20 * 2
 254     DURATION: { min: 1 }, // Number
 255     TAGS: { min: 0, max: 5 }, // Number of total tags
 256     TAG: { min: 2, max: 30 }, // Length
 257     THUMBNAIL: { min: 2, max: 30 },
 258     THUMBNAIL_DATA: { min: 0, max: 20000 }, // Bytes
 259     VIEWS: { min: 0 },
 260     LIKES: { min: 0 },
 261     DISLIKES: { min: 0 },
 262     FILE_SIZE: { min: 10 },
 263     URL: { min: 3, max: 2000 } // Length
 264   },
 265   ACTORS: {
 266     PUBLIC_KEY: { min: 10, max: 5000 }, // Length
 267     PRIVATE_KEY: { min: 10, max: 5000 }, // Length
 268     URL: { min: 3, max: 2000 }, // Length
 269     AVATAR: {
 270       EXTNAME: [ '.png', '.jpeg', '.jpg' ],
 271       FILE_SIZE: {
 272         max: 2 * 1024 * 1024 // 2MB
 273       }
 274     }
 275   },
 276   VIDEO_EVENTS: {
 277     COUNT: { min: 0 }
 278   },
 279   VIDEO_COMMENTS: {
 280     TEXT: { min: 1, max: 3000 }, // Length
 281     URL: { min: 3, max: 2000 } // Length
 282   },
 283   VIDEO_SHARE: {
 284     URL: { min: 3, max: 2000 } // Length
 285   }
 286 }
 287
 288 const RATES_LIMIT = {
 289   LOGIN: {
 290     WINDOW_MS: 5 * 60 * 1000, // 5 minutes
 291     MAX: 15 // 15 attempts
 292   }
 293 }
 294
 295 let VIDEO_VIEW_LIFETIME = 60000 * 60 // 1 hour
 296 const VIDEO_TRANSCODING_FPS = {
 297   MIN: 10,
 298   AVERAGE: 30,
 299   MAX: 60,
 300   KEEP_ORIGIN_FPS_RESOLUTION_MIN: 720 // We keep the original FPS on high resolutions (720 minimum)
 301 }
 302
 303 const VIDEO_RATE_TYPES: { [ id: string ]: VideoRateType } = {
 304   LIKE: 'like',
 305   DISLIKE: 'dislike'
 306 }
 307
 308 const VIDEO_CATEGORIES = {
 309   1: 'Music',
 310   2: 'Films',
 311   3: 'Vehicles',
 312   4: 'Art',
 313   5: 'Sports',
 314   6: 'Travels',
 315   7: 'Gaming',
 316   8: 'People',
 317   9: 'Comedy',
 318   10: 'Entertainment',
 319   11: 'News',
 320   12: 'How To',
 321   13: 'Education',
 322   14: 'Activism',
 323   15: 'Science & Technology',
 324   16: 'Animals',
 325   17: 'Kids',
 326   18: 'Food'
 327 }
 328
 329 // See https://creativecommons.org/licenses/?lang=en
 330 const VIDEO_LICENCES = {
 331   1: 'Attribution',
 332   2: 'Attribution - Share Alike',
 333   3: 'Attribution - No Derivatives',
 334   4: 'Attribution - Non Commercial',
 335   5: 'Attribution - Non Commercial - Share Alike',
 336   6: 'Attribution - Non Commercial - No Derivatives',
 337   7: 'Public Domain Dedication'
 338 }
 339
 340 const VIDEO_LANGUAGES = buildLanguages()
 341
 342 const VIDEO_PRIVACIES = {
 343   [VideoPrivacy.PUBLIC]: 'Public',
 344   [VideoPrivacy.UNLISTED]: 'Unlisted',
 345   [VideoPrivacy.PRIVATE]: 'Private'
 346 }
 347
 348 const VIDEO_STATES = {
 349   [VideoState.PUBLISHED]: 'Published',
 350   [VideoState.TO_TRANSCODE]: 'To transcode'
 351 }
 352
 353 const VIDEO_MIMETYPE_EXT = {
 354   'video/webm': '.webm',
 355   'video/ogg': '.ogv',
 356   'video/mp4': '.mp4'
 357 }
 358 const VIDEO_EXT_MIMETYPE = invert(VIDEO_MIMETYPE_EXT)
 359
 360 const IMAGE_MIMETYPE_EXT = {
 361   'image/png': '.png',
 362   'image/jpg': '.jpg',
 363   'image/jpeg': '.jpg'
 364 }
 365
 366 const VIDEO_CAPTIONS_MIMETYPE_EXT = {
 367   'text/vtt': '.vtt'
 368 }
 369
 370 // ---------------------------------------------------------------------------
 371
 372 const SERVER_ACTOR_NAME = 'peertube'
 373
 374 const ACTIVITY_PUB = {
 375   POTENTIAL_ACCEPT_HEADERS: [
 376     'application/activity+json',
 377     'application/ld+json',
 378     'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'
 379   ],
 380   ACCEPT_HEADER: 'application/activity+json, application/ld+json',
 381   PUBLIC: 'https://www.w3.org/ns/activitystreams#Public',
 382   COLLECTION_ITEMS_PER_PAGE: 10,
 383   FETCH_PAGE_LIMIT: 100,
 384   URL_MIME_TYPES: {
 385     VIDEO: Object.keys(VIDEO_MIMETYPE_EXT),
 386     TORRENT: [ 'application/x-bittorrent' ],
 387     MAGNET: [ 'application/x-bittorrent;x-scheme-handler/magnet' ]
 388   },
 389   MAX_RECURSION_COMMENTS: 100,
 390   ACTOR_REFRESH_INTERVAL: 3600 * 24 * 1000 // 1 day
 391 }
 392
 393 const ACTIVITY_PUB_ACTOR_TYPES: { [ id: string ]: ActivityPubActorType } = {
 394   GROUP: 'Group',
 395   PERSON: 'Person',
 396   APPLICATION: 'Application'
 397 }
 398
 399 // ---------------------------------------------------------------------------
 400
 401 const PRIVATE_RSA_KEY_SIZE = 2048
 402
 403 // Password encryption
 404 const BCRYPT_SALT_SIZE = 10
 405
 406 const USER_PASSWORD_RESET_LIFETIME = 60000 * 5 // 5 minutes
 407
 408 const NSFW_POLICY_TYPES: { [ id: string]: NSFWPolicyType } = {
 409   DO_NOT_LIST: 'do_not_list',
 410   BLUR: 'blur',
 411   DISPLAY: 'display'
 412 }
 413
 414 // ---------------------------------------------------------------------------
 415
 416 // Express static paths (router)
 417 const STATIC_PATHS = {
 418   PREVIEWS: '/static/previews/',
 419   THUMBNAILS: '/static/thumbnails/',
 420   TORRENTS: '/static/torrents/',
 421   WEBSEED: '/static/webseed/',
 422   AVATARS: '/static/avatars/',
 423   VIDEO_CAPTIONS: '/static/video-captions/'
 424 }
 425 const STATIC_DOWNLOAD_PATHS = {
 426   TORRENTS: '/download/torrents/',
 427   VIDEOS: '/download/videos/'
 428 }
 429
 430 // Cache control
 431 let STATIC_MAX_AGE = '30d'
 432
 433 // Videos thumbnail size
 434 const THUMBNAILS_SIZE = {
 435   width: 200,
 436   height: 110
 437 }
 438 const PREVIEWS_SIZE = {
 439   width: 560,
 440   height: 315
 441 }
 442 const AVATARS_SIZE = {
 443   width: 120,
 444   height: 120
 445 }
 446
 447 const EMBED_SIZE = {
 448   width: 560,
 449   height: 315
 450 }
 451
 452 // Sub folders of cache directory
 453 const CACHE = {
 454   DIRECTORIES: {
 455     PREVIEWS: join(CONFIG.STORAGE.CACHE_DIR, 'previews'),
 456     VIDEO_CAPTIONS: join(CONFIG.STORAGE.CACHE_DIR, 'video-captions')
 457   }
 458 }
 459
 460 const ACCEPT_HEADERS = [ 'html', 'application/json' ].concat(ACTIVITY_PUB.POTENTIAL_ACCEPT_HEADERS)
 461
 462 // ---------------------------------------------------------------------------
 463
 464 const OPENGRAPH_AND_OEMBED_COMMENT = '<!-- open graph and oembed tags -->'
 465
 466 // ---------------------------------------------------------------------------
 467
 468 const FEEDS = {
 469   COUNT: 20
 470 }
 471
 472 // ---------------------------------------------------------------------------
 473
 474 const TRACKER_RATE_LIMITS = {
 475   INTERVAL: 60000 * 5, // 5 minutes
 476   ANNOUNCES_PER_IP_PER_INFOHASH: 15, // maximum announces per torrent in the interval
 477   ANNOUNCES_PER_IP: 30 // maximum announces for all our torrents in the interval
 478 }
 479
 480 // ---------------------------------------------------------------------------
 481
 482 // Special constants for a test instance
 483 if (isTestInstance() === true) {
 484   ACTOR_FOLLOW_SCORE.BASE = 20
 485
 486   REMOTE_SCHEME.HTTP = 'http'
 487   REMOTE_SCHEME.WS = 'ws'
 488
 489   STATIC_MAX_AGE = '0'
 490
 491   ACTIVITY_PUB.COLLECTION_ITEMS_PER_PAGE = 2
 492   ACTIVITY_PUB.ACTOR_REFRESH_INTERVAL = 10 * 1000 // 10 seconds
 493
 494   CONSTRAINTS_FIELDS.ACTORS.AVATAR.FILE_SIZE.max = 100 * 1024 // 100KB
 495
 496   SCHEDULER_INTERVALS_MS.badActorFollow = 10000
 497   SCHEDULER_INTERVALS_MS.removeOldJobs = 10000
 498   SCHEDULER_INTERVALS_MS.updateVideos = 5000
 499
 500   VIDEO_VIEW_LIFETIME = 1000 // 1 second
 501
 502   JOB_ATTEMPTS['email'] = 1
 503 }
 504
 505 updateWebserverConfig()
 506
 507 // ---------------------------------------------------------------------------
 508
 509 export {
 510   API_VERSION,
 511   VIDEO_CAPTIONS_MIMETYPE_EXT,
 512   AVATARS_SIZE,
 513   ACCEPT_HEADERS,
 514   BCRYPT_SALT_SIZE,
 515   TRACKER_RATE_LIMITS,
 516   CACHE,
 517   CONFIG,
 518   CONSTRAINTS_FIELDS,
 519   EMBED_SIZE,
 520   JOB_CONCURRENCY,
 521   JOB_ATTEMPTS,
 522   LAST_MIGRATION_VERSION,
 523   OAUTH_LIFETIME,
 524   OPENGRAPH_AND_OEMBED_COMMENT,
 525   BROADCAST_CONCURRENCY,
 526   PAGINATION_COUNT_DEFAULT,
 527   ACTOR_FOLLOW_SCORE,
 528   PREVIEWS_SIZE,
 529   REMOTE_SCHEME,
 530   FOLLOW_STATES,
 531   SERVER_ACTOR_NAME,
 532   PRIVATE_RSA_KEY_SIZE,
 533   ROUTE_CACHE_LIFETIME,
 534   SORTABLE_COLUMNS,
 535   FEEDS,
 536   NSFW_POLICY_TYPES,
 537   STATIC_MAX_AGE,
 538   STATIC_PATHS,
 539   ACTIVITY_PUB,
 540   ACTIVITY_PUB_ACTOR_TYPES,
 541   THUMBNAILS_SIZE,
 542   VIDEO_CATEGORIES,
 543   VIDEO_LANGUAGES,
 544   VIDEO_PRIVACIES,
 545   VIDEO_LICENCES,
 546   VIDEO_STATES,
 547   VIDEO_RATE_TYPES,
 548   VIDEO_MIMETYPE_EXT,
 549   VIDEO_TRANSCODING_FPS,
 550   JOB_REQUEST_TIMEOUT,
 551   JOB_REQUEST_TTL,
 552   USER_PASSWORD_RESET_LIFETIME,
 553   IMAGE_MIMETYPE_EXT,
 554   SCHEDULER_INTERVALS_MS,
 555   STATIC_DOWNLOAD_PATHS,
 556   RATES_LIMIT,
 557   VIDEO_EXT_MIMETYPE,
 558   JOB_COMPLETED_LIFETIME,
 559   VIDEO_VIEW_LIFETIME,
 560   buildLanguages
 561 }
 562
 563 // ---------------------------------------------------------------------------
 564
 565 function getLocalConfigFilePath () {
 566   const configSources = config.util.getConfigSources()
 567   if (configSources.length === 0) throw new Error('Invalid config source.')
 568
 569   let filename = 'local'
 570   if (process.env.NODE_ENV) filename += `-${process.env.NODE_ENV}`
 571   if (process.env.NODE_APP_INSTANCE) filename += `-${process.env.NODE_APP_INSTANCE}`
 572
 573   return join(dirname(configSources[ 0 ].name), filename + '.json')
 574 }
 575
 576 function updateWebserverConfig () {
 577   CONFIG.WEBSERVER.URL = sanitizeUrl(CONFIG.WEBSERVER.SCHEME + '://' + CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT)
 578   CONFIG.WEBSERVER.HOST = sanitizeHost(CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT, REMOTE_SCHEME.HTTP)
 579 }
 580
 581 function buildLanguages () {
 582   const iso639 = require('iso-639-3')
 583
 584   const languages: { [ id: string ]: string } = {}
 585
 586   const signLanguages = [
 587     'sgn', // Sign languages (macro language)
 588     'ase', // American
 589     'sdl', // Arabian
 590     'bfi', // British
 591     'bzs', // Brazilian
 592     'csl', // Chinese
 593     'cse', // Czech
 594     'dsl', // Danish
 595     'fsl', // French
 596     'gsg', // German
 597     'pks', // Pakistan
 598     'jsl', // Japanese
 599     'sfs', // South African
 600     'swl', // Swedish
 601     'rsl' // Russian
 602   ]
 603
 604   // Only add ISO639-1 languages and some sign languages (ISO639-3)
 605   iso639
 606     .filter(l => {
 607       return (l.iso6391 !== null && l.type === 'living') ||
 608         signLanguages.indexOf(l.iso6393) !== -1
 609     })
 610     .forEach(l => languages[l.iso6391 || l.iso6393] = l.name)
 611
 612   return languages
 613 }
 614
 615 export function reloadConfig () {
 616
 617   function directory () {
 618     if (process.env.NODE_CONFIG_DIR) {
 619       return process.env.NODE_CONFIG_DIR
 620     }
 621
 622     return join(root(), 'config')
 623   }
 624
 625   function purge () {
 626     for (const fileName in require.cache) {
 627       if (-1 === fileName.indexOf(directory())) {
 628         continue
 629       }
 630
 631       delete require.cache[fileName]
 632     }
 633
 634     delete require.cache[require.resolve('config')]
 635   }
 636
 637   purge()
 638
 639   config = require('config')
 640
 641   updateWebserverConfig()
 642 }