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 = 240
  18
  19 // ---------------------------------------------------------------------------
  20
  21 // API version
  22 const API_VERSION = 'v1'
  23
  24 const PAGINATION = {
  25   COUNT: {
  26     DEFAULT: 15,
  27     MAX: 100
  28   }
  29 }
  30
  31 // Sortable columns per schema
  32 const SORTABLE_COLUMNS = {
  33   USERS: [ 'id', 'username', 'createdAt' ],
  34   ACCOUNTS: [ 'createdAt' ],
  35   JOBS: [ 'createdAt' ],
  36   VIDEO_ABUSES: [ 'id', 'createdAt' ],
  37   VIDEO_CHANNELS: [ 'id', 'name', 'updatedAt', 'createdAt' ],
  38   VIDEOS: [ 'name', 'duration', 'createdAt', 'publishedAt', 'views', 'likes' ],
  39   VIDEO_COMMENT_THREADS: [ 'createdAt' ],
  40   BLACKLISTS: [ 'id', 'name', 'duration', 'views', 'likes', 'dislikes', 'uuid', 'createdAt' ],
  41   FOLLOWERS: [ 'createdAt' ],
  42   FOLLOWING: [ 'createdAt' ],
  43
  44   VIDEOS_SEARCH: [ 'match', 'name', 'duration', 'createdAt', 'publishedAt', 'views', 'likes' ]
  45 }
  46
  47 const OAUTH_LIFETIME = {
  48   ACCESS_TOKEN: 3600 * 24, // 1 day, for upload
  49   REFRESH_TOKEN: 1209600 // 2 weeks
  50 }
  51
  52 const ROUTE_CACHE_LIFETIME = {
  53   FEEDS: '15 minutes',
  54   ROBOTS: '2 hours',
  55   NODEINFO: '10 minutes',
  56   ACTIVITY_PUB: {
  57     VIDEOS: '1 second' // 1 second, cache concurrent requests after a broadcast for example
  58   }
  59 }
  60
  61 // ---------------------------------------------------------------------------
  62
  63 // Number of points we add/remove after a successful/bad request
  64 const ACTOR_FOLLOW_SCORE = {
  65   PENALTY: -10,
  66   BONUS: 10,
  67   BASE: 1000,
  68   MAX: 10000
  69 }
  70
  71 const FOLLOW_STATES: { [ id: string ]: FollowState } = {
  72   PENDING: 'pending',
  73   ACCEPTED: 'accepted'
  74 }
  75
  76 const REMOTE_SCHEME = {
  77   HTTP: 'https',
  78   WS: 'wss'
  79 }
  80
  81 const JOB_ATTEMPTS: { [ id in JobType ]: number } = {
  82   'activitypub-http-broadcast': 5,
  83   'activitypub-http-unicast': 5,
  84   'activitypub-http-fetcher': 5,
  85   'activitypub-follow': 5,
  86   'video-file-import': 1,
  87   'video-file': 1,
  88   'email': 5
  89 }
  90 const JOB_CONCURRENCY: { [ id in JobType ]: number } = {
  91   'activitypub-http-broadcast': 1,
  92   'activitypub-http-unicast': 5,
  93   'activitypub-http-fetcher': 1,
  94   'activitypub-follow': 3,
  95   'video-file-import': 1,
  96   'video-file': 1,
  97   'email': 5
  98 }
  99 const BROADCAST_CONCURRENCY = 10 // How many requests in parallel we do in activitypub-http-broadcast job
 100 const JOB_REQUEST_TIMEOUT = 3000 // 3 seconds
 101 const JOB_REQUEST_TTL = 60000 * 10 // 10 minutes
 102 const JOB_COMPLETED_LIFETIME = 60000 * 60 * 24 * 2 // 2 days
 103
 104 // 1 hour
 105 let SCHEDULER_INTERVALS_MS = {
 106   badActorFollow: 60000 * 60, // 1 hour
 107   removeOldJobs: 60000 * 60, // 1 hour
 108   updateVideos: 60000 // 1 minute
 109 }
 110
 111 // ---------------------------------------------------------------------------
 112
 113 const CONFIG = {
 114   CUSTOM_FILE: getLocalConfigFilePath(),
 115   LISTEN: {
 116     PORT: config.get<number>('listen.port'),
 117     HOSTNAME: config.get<string>('listen.hostname')
 118   },
 119   DATABASE: {
 120     DBNAME: 'peertube' + config.get<string>('database.suffix'),
 121     HOSTNAME: config.get<string>('database.hostname'),
 122     PORT: config.get<number>('database.port'),
 123     USERNAME: config.get<string>('database.username'),
 124     PASSWORD: config.get<string>('database.password'),
 125     POOL: {
 126       MAX: config.get<number>('database.pool.max')
 127     }
 128   },
 129   REDIS: {
 130     HOSTNAME: config.has('redis.hostname') ? config.get<string>('redis.hostname') : null,
 131     PORT: config.has('redis.port') ? config.get<number>('redis.port') : null,
 132     SOCKET: config.has('redis.socket') ? config.get<string>('redis.socket') : null,
 133     AUTH: config.has('redis.auth') ? config.get<string>('redis.auth') : null,
 134     DB: config.has('redis.db') ? config.get<number>('redis.db') : null
 135   },
 136   SMTP: {
 137     HOSTNAME: config.get<string>('smtp.hostname'),
 138     PORT: config.get<number>('smtp.port'),
 139     USERNAME: config.get<string>('smtp.username'),
 140     PASSWORD: config.get<string>('smtp.password'),
 141     TLS: config.get<boolean>('smtp.tls'),
 142     DISABLE_STARTTLS: config.get<boolean>('smtp.disable_starttls'),
 143     CA_FILE: config.get<string>('smtp.ca_file'),
 144     FROM_ADDRESS: config.get<string>('smtp.from_address')
 145   },
 146   STORAGE: {
 147     AVATARS_DIR: buildPath(config.get<string>('storage.avatars')),
 148     LOG_DIR: buildPath(config.get<string>('storage.logs')),
 149     VIDEOS_DIR: buildPath(config.get<string>('storage.videos')),
 150     THUMBNAILS_DIR: buildPath(config.get<string>('storage.thumbnails')),
 151     PREVIEWS_DIR: buildPath(config.get<string>('storage.previews')),
 152     CAPTIONS_DIR: buildPath(config.get<string>('storage.captions')),
 153     TORRENTS_DIR: buildPath(config.get<string>('storage.torrents')),
 154     CACHE_DIR: buildPath(config.get<string>('storage.cache'))
 155   },
 156   WEBSERVER: {
 157     SCHEME: config.get<boolean>('webserver.https') === true ? 'https' : 'http',
 158     WS: config.get<boolean>('webserver.https') === true ? 'wss' : 'ws',
 159     HOSTNAME: config.get<string>('webserver.hostname'),
 160     PORT: config.get<number>('webserver.port'),
 161     URL: '',
 162     HOST: ''
 163   },
 164   TRUST_PROXY: config.get<string[]>('trust_proxy'),
 165   LOG: {
 166     LEVEL: config.get<string>('log.level')
 167   },
 168   ADMIN: {
 169     get EMAIL () { return config.get<string>('admin.email') }
 170   },
 171   SIGNUP: {
 172     get ENABLED () { return config.get<boolean>('signup.enabled') },
 173     get LIMIT () { return config.get<number>('signup.limit') },
 174     FILTERS: {
 175       CIDR: {
 176         get WHITELIST () { return config.get<string[]>('signup.filters.cidr.whitelist') },
 177         get BLACKLIST () { return config.get<string[]>('signup.filters.cidr.blacklist') }
 178       }
 179     }
 180   },
 181   USER: {
 182     get VIDEO_QUOTA () { return config.get<number>('user.video_quota') }
 183   },
 184   TRANSCODING: {
 185     get ENABLED () { return config.get<boolean>('transcoding.enabled') },
 186     get THREADS () { return config.get<number>('transcoding.threads') },
 187     RESOLUTIONS: {
 188       get '240p' () { return config.get<boolean>('transcoding.resolutions.240p') },
 189       get '360p' () { return config.get<boolean>('transcoding.resolutions.360p') },
 190       get '480p' () { return config.get<boolean>('transcoding.resolutions.480p') },
 191       get '720p' () { return config.get<boolean>('transcoding.resolutions.720p') },
 192       get '1080p' () { return config.get<boolean>('transcoding.resolutions.1080p') }
 193     }
 194   },
 195   CACHE: {
 196     PREVIEWS: {
 197       get SIZE () { return config.get<number>('cache.previews.size') }
 198     },
 199     VIDEO_CAPTIONS: {
 200       get SIZE () { return config.get<number>('cache.captions.size') }
 201     }
 202   },
 203   INSTANCE: {
 204     get NAME () { return config.get<string>('instance.name') },
 205     get SHORT_DESCRIPTION () { return config.get<string>('instance.short_description') },
 206     get DESCRIPTION () { return config.get<string>('instance.description') },
 207     get TERMS () { return config.get<string>('instance.terms') },
 208     get DEFAULT_CLIENT_ROUTE () { return config.get<string>('instance.default_client_route') },
 209     get DEFAULT_NSFW_POLICY () { return config.get<NSFWPolicyType>('instance.default_nsfw_policy') },
 210     CUSTOMIZATIONS: {
 211       get JAVASCRIPT () { return config.get<string>('instance.customizations.javascript') },
 212       get CSS () { return config.get<string>('instance.customizations.css') }
 213     },
 214     get ROBOTS () { return config.get<string>('instance.robots') }
 215   },
 216   SERVICES: {
 217     TWITTER: {
 218       get USERNAME () { return config.get<string>('services.twitter.username') },
 219       get WHITELISTED () { return config.get<boolean>('services.twitter.whitelisted') }
 220     }
 221   }
 222 }
 223
 224 // ---------------------------------------------------------------------------
 225
 226 const CONSTRAINTS_FIELDS = {
 227   USERS: {
 228     NAME: { min: 3, max: 120 }, // Length
 229     DESCRIPTION: { min: 3, max: 250 }, // Length
 230     USERNAME: { min: 3, max: 20 }, // Length
 231     PASSWORD: { min: 6, max: 255 }, // Length
 232     VIDEO_QUOTA: { min: -1 }
 233   },
 234   VIDEO_ABUSES: {
 235     REASON: { min: 2, max: 300 } // Length
 236   },
 237   VIDEO_CHANNELS: {
 238     NAME: { min: 3, max: 120 }, // Length
 239     DESCRIPTION: { min: 3, max: 500 }, // Length
 240     SUPPORT: { min: 3, max: 500 }, // Length
 241     URL: { min: 3, max: 2000 } // Length
 242   },
 243   VIDEO_CAPTIONS: {
 244     CAPTION_FILE: {
 245       EXTNAME: [ '.vtt', '.srt' ],
 246       FILE_SIZE: {
 247         max: 2 * 1024 * 1024 // 2MB
 248       }
 249     }
 250   },
 251   VIDEOS: {
 252     NAME: { min: 3, max: 120 }, // Length
 253     LANGUAGE: { min: 1, max: 10 }, // Length
 254     TRUNCATED_DESCRIPTION: { min: 3, max: 250 }, // Length
 255     DESCRIPTION: { min: 3, max: 10000 }, // Length
 256     SUPPORT: { min: 3, max: 500 }, // Length
 257     IMAGE: {
 258       EXTNAME: [ '.jpg', '.jpeg' ],
 259       FILE_SIZE: {
 260         max: 2 * 1024 * 1024 // 2MB
 261       }
 262     },
 263     EXTNAME: [ '.mp4', '.ogv', '.webm' ],
 264     INFO_HASH: { min: 40, max: 40 }, // Length, info hash is 20 bytes length but we represent it in hexadecimal so 20 * 2
 265     DURATION: { min: 1 }, // Number
 266     TAGS: { min: 0, max: 5 }, // Number of total tags
 267     TAG: { min: 2, max: 30 }, // Length
 268     THUMBNAIL: { min: 2, max: 30 },
 269     THUMBNAIL_DATA: { min: 0, max: 20000 }, // Bytes
 270     VIEWS: { min: 0 },
 271     LIKES: { min: 0 },
 272     DISLIKES: { min: 0 },
 273     FILE_SIZE: { min: 10 },
 274     URL: { min: 3, max: 2000 } // Length
 275   },
 276   ACTORS: {
 277     PUBLIC_KEY: { min: 10, max: 5000 }, // Length
 278     PRIVATE_KEY: { min: 10, max: 5000 }, // Length
 279     URL: { min: 3, max: 2000 }, // Length
 280     AVATAR: {
 281       EXTNAME: [ '.png', '.jpeg', '.jpg' ],
 282       FILE_SIZE: {
 283         max: 2 * 1024 * 1024 // 2MB
 284       }
 285     }
 286   },
 287   VIDEO_EVENTS: {
 288     COUNT: { min: 0 }
 289   },
 290   VIDEO_COMMENTS: {
 291     TEXT: { min: 1, max: 3000 }, // Length
 292     URL: { min: 3, max: 2000 } // Length
 293   },
 294   VIDEO_SHARE: {
 295     URL: { min: 3, max: 2000 } // Length
 296   }
 297 }
 298
 299 const RATES_LIMIT = {
 300   LOGIN: {
 301     WINDOW_MS: 5 * 60 * 1000, // 5 minutes
 302     MAX: 15 // 15 attempts
 303   }
 304 }
 305
 306 let VIDEO_VIEW_LIFETIME = 60000 * 60 // 1 hour
 307 const VIDEO_TRANSCODING_FPS = {
 308   MIN: 10,
 309   AVERAGE: 30,
 310   MAX: 60,
 311   KEEP_ORIGIN_FPS_RESOLUTION_MIN: 720 // We keep the original FPS on high resolutions (720 minimum)
 312 }
 313
 314 const VIDEO_RATE_TYPES: { [ id: string ]: VideoRateType } = {
 315   LIKE: 'like',
 316   DISLIKE: 'dislike'
 317 }
 318
 319 const VIDEO_CATEGORIES = {
 320   1: 'Music',
 321   2: 'Films',
 322   3: 'Vehicles',
 323   4: 'Art',
 324   5: 'Sports',
 325   6: 'Travels',
 326   7: 'Gaming',
 327   8: 'People',
 328   9: 'Comedy',
 329   10: 'Entertainment',
 330   11: 'News',
 331   12: 'How To',
 332   13: 'Education',
 333   14: 'Activism',
 334   15: 'Science & Technology',
 335   16: 'Animals',
 336   17: 'Kids',
 337   18: 'Food'
 338 }
 339
 340 // See https://creativecommons.org/licenses/?lang=en
 341 const VIDEO_LICENCES = {
 342   1: 'Attribution',
 343   2: 'Attribution - Share Alike',
 344   3: 'Attribution - No Derivatives',
 345   4: 'Attribution - Non Commercial',
 346   5: 'Attribution - Non Commercial - Share Alike',
 347   6: 'Attribution - Non Commercial - No Derivatives',
 348   7: 'Public Domain Dedication'
 349 }
 350
 351 const VIDEO_LANGUAGES = buildLanguages()
 352
 353 const VIDEO_PRIVACIES = {
 354   [VideoPrivacy.PUBLIC]: 'Public',
 355   [VideoPrivacy.UNLISTED]: 'Unlisted',
 356   [VideoPrivacy.PRIVATE]: 'Private'
 357 }
 358
 359 const VIDEO_STATES = {
 360   [VideoState.PUBLISHED]: 'Published',
 361   [VideoState.TO_TRANSCODE]: 'To transcode'
 362 }
 363
 364 const VIDEO_MIMETYPE_EXT = {
 365   'video/webm': '.webm',
 366   'video/ogg': '.ogv',
 367   'video/mp4': '.mp4'
 368 }
 369 const VIDEO_EXT_MIMETYPE = invert(VIDEO_MIMETYPE_EXT)
 370
 371 const IMAGE_MIMETYPE_EXT = {
 372   'image/png': '.png',
 373   'image/jpg': '.jpg',
 374   'image/jpeg': '.jpg'
 375 }
 376
 377 const VIDEO_CAPTIONS_MIMETYPE_EXT = {
 378   'text/vtt': '.vtt',
 379   'application/x-subrip': '.srt'
 380 }
 381
 382 // ---------------------------------------------------------------------------
 383
 384 const SERVER_ACTOR_NAME = 'peertube'
 385
 386 const ACTIVITY_PUB = {
 387   POTENTIAL_ACCEPT_HEADERS: [
 388     'application/activity+json',
 389     'application/ld+json',
 390     'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'
 391   ],
 392   ACCEPT_HEADER: 'application/activity+json, application/ld+json',
 393   PUBLIC: 'https://www.w3.org/ns/activitystreams#Public',
 394   COLLECTION_ITEMS_PER_PAGE: 10,
 395   FETCH_PAGE_LIMIT: 100,
 396   URL_MIME_TYPES: {
 397     VIDEO: Object.keys(VIDEO_MIMETYPE_EXT),
 398     TORRENT: [ 'application/x-bittorrent' ],
 399     MAGNET: [ 'application/x-bittorrent;x-scheme-handler/magnet' ]
 400   },
 401   MAX_RECURSION_COMMENTS: 100,
 402   ACTOR_REFRESH_INTERVAL: 3600 * 24 * 1000 // 1 day
 403 }
 404
 405 const ACTIVITY_PUB_ACTOR_TYPES: { [ id: string ]: ActivityPubActorType } = {
 406   GROUP: 'Group',
 407   PERSON: 'Person',
 408   APPLICATION: 'Application'
 409 }
 410
 411 // ---------------------------------------------------------------------------
 412
 413 const PRIVATE_RSA_KEY_SIZE = 2048
 414
 415 // Password encryption
 416 const BCRYPT_SALT_SIZE = 10
 417
 418 const USER_PASSWORD_RESET_LIFETIME = 60000 * 5 // 5 minutes
 419
 420 const NSFW_POLICY_TYPES: { [ id: string]: NSFWPolicyType } = {
 421   DO_NOT_LIST: 'do_not_list',
 422   BLUR: 'blur',
 423   DISPLAY: 'display'
 424 }
 425
 426 // ---------------------------------------------------------------------------
 427
 428 // Express static paths (router)
 429 const STATIC_PATHS = {
 430   PREVIEWS: '/static/previews/',
 431   THUMBNAILS: '/static/thumbnails/',
 432   TORRENTS: '/static/torrents/',
 433   WEBSEED: '/static/webseed/',
 434   AVATARS: '/static/avatars/',
 435   VIDEO_CAPTIONS: '/static/video-captions/'
 436 }
 437 const STATIC_DOWNLOAD_PATHS = {
 438   TORRENTS: '/download/torrents/',
 439   VIDEOS: '/download/videos/'
 440 }
 441
 442 // Cache control
 443 let STATIC_MAX_AGE = '2h'
 444
 445 // Videos thumbnail size
 446 const THUMBNAILS_SIZE = {
 447   width: 200,
 448   height: 110
 449 }
 450 const PREVIEWS_SIZE = {
 451   width: 560,
 452   height: 315
 453 }
 454 const AVATARS_SIZE = {
 455   width: 120,
 456   height: 120
 457 }
 458
 459 const EMBED_SIZE = {
 460   width: 560,
 461   height: 315
 462 }
 463
 464 // Sub folders of cache directory
 465 const CACHE = {
 466   PREVIEWS: {
 467     DIRECTORY: join(CONFIG.STORAGE.CACHE_DIR, 'previews'),
 468     MAX_AGE: 1000 * 3600 * 3 // 3 hours
 469   },
 470   VIDEO_CAPTIONS: {
 471     DIRECTORY: join(CONFIG.STORAGE.CACHE_DIR, 'video-captions'),
 472     MAX_AGE: 1000 * 3600 * 3 // 3 hours
 473   }
 474 }
 475
 476 const ACCEPT_HEADERS = [ 'html', 'application/json' ].concat(ACTIVITY_PUB.POTENTIAL_ACCEPT_HEADERS)
 477
 478 // ---------------------------------------------------------------------------
 479
 480 const CUSTOM_HTML_TAG_COMMENTS = {
 481   TITLE: '<!-- title tag -->',
 482   DESCRIPTION: '<!-- description tag -->',
 483   CUSTOM_CSS: '<!-- custom css tag -->',
 484   OPENGRAPH_AND_OEMBED: '<!-- open graph and oembed tags -->'
 485 }
 486
 487 // ---------------------------------------------------------------------------
 488
 489 const FEEDS = {
 490   COUNT: 20
 491 }
 492
 493 // ---------------------------------------------------------------------------
 494
 495 const TRACKER_RATE_LIMITS = {
 496   INTERVAL: 60000 * 5, // 5 minutes
 497   ANNOUNCES_PER_IP_PER_INFOHASH: 15, // maximum announces per torrent in the interval
 498   ANNOUNCES_PER_IP: 30 // maximum announces for all our torrents in the interval
 499 }
 500
 501 // ---------------------------------------------------------------------------
 502
 503 // Special constants for a test instance
 504 if (isTestInstance() === true) {
 505   ACTOR_FOLLOW_SCORE.BASE = 20
 506
 507   REMOTE_SCHEME.HTTP = 'http'
 508   REMOTE_SCHEME.WS = 'ws'
 509
 510   STATIC_MAX_AGE = '0'
 511
 512   ACTIVITY_PUB.COLLECTION_ITEMS_PER_PAGE = 2
 513   ACTIVITY_PUB.ACTOR_REFRESH_INTERVAL = 10 * 1000 // 10 seconds
 514
 515   CONSTRAINTS_FIELDS.ACTORS.AVATAR.FILE_SIZE.max = 100 * 1024 // 100KB
 516
 517   SCHEDULER_INTERVALS_MS.badActorFollow = 10000
 518   SCHEDULER_INTERVALS_MS.removeOldJobs = 10000
 519   SCHEDULER_INTERVALS_MS.updateVideos = 5000
 520
 521   VIDEO_VIEW_LIFETIME = 1000 // 1 second
 522
 523   JOB_ATTEMPTS['email'] = 1
 524
 525   CACHE.VIDEO_CAPTIONS.MAX_AGE = 3000
 526 }
 527
 528 updateWebserverConfig()
 529
 530 // ---------------------------------------------------------------------------
 531
 532 export {
 533   API_VERSION,
 534   VIDEO_CAPTIONS_MIMETYPE_EXT,
 535   AVATARS_SIZE,
 536   ACCEPT_HEADERS,
 537   BCRYPT_SALT_SIZE,
 538   TRACKER_RATE_LIMITS,
 539   CACHE,
 540   CONFIG,
 541   CONSTRAINTS_FIELDS,
 542   EMBED_SIZE,
 543   JOB_CONCURRENCY,
 544   JOB_ATTEMPTS,
 545   LAST_MIGRATION_VERSION,
 546   OAUTH_LIFETIME,
 547   CUSTOM_HTML_TAG_COMMENTS,
 548   BROADCAST_CONCURRENCY,
 549   PAGINATION,
 550   ACTOR_FOLLOW_SCORE,
 551   PREVIEWS_SIZE,
 552   REMOTE_SCHEME,
 553   FOLLOW_STATES,
 554   SERVER_ACTOR_NAME,
 555   PRIVATE_RSA_KEY_SIZE,
 556   ROUTE_CACHE_LIFETIME,
 557   SORTABLE_COLUMNS,
 558   FEEDS,
 559   NSFW_POLICY_TYPES,
 560   STATIC_MAX_AGE,
 561   STATIC_PATHS,
 562   ACTIVITY_PUB,
 563   ACTIVITY_PUB_ACTOR_TYPES,
 564   THUMBNAILS_SIZE,
 565   VIDEO_CATEGORIES,
 566   VIDEO_LANGUAGES,
 567   VIDEO_PRIVACIES,
 568   VIDEO_LICENCES,
 569   VIDEO_STATES,
 570   VIDEO_RATE_TYPES,
 571   VIDEO_MIMETYPE_EXT,
 572   VIDEO_TRANSCODING_FPS,
 573   JOB_REQUEST_TIMEOUT,
 574   JOB_REQUEST_TTL,
 575   USER_PASSWORD_RESET_LIFETIME,
 576   IMAGE_MIMETYPE_EXT,
 577   SCHEDULER_INTERVALS_MS,
 578   STATIC_DOWNLOAD_PATHS,
 579   RATES_LIMIT,
 580   VIDEO_EXT_MIMETYPE,
 581   JOB_COMPLETED_LIFETIME,
 582   VIDEO_VIEW_LIFETIME,
 583   buildLanguages
 584 }
 585
 586 // ---------------------------------------------------------------------------
 587
 588 function getLocalConfigFilePath () {
 589   const configSources = config.util.getConfigSources()
 590   if (configSources.length === 0) throw new Error('Invalid config source.')
 591
 592   let filename = 'local'
 593   if (process.env.NODE_ENV) filename += `-${process.env.NODE_ENV}`
 594   if (process.env.NODE_APP_INSTANCE) filename += `-${process.env.NODE_APP_INSTANCE}`
 595
 596   return join(dirname(configSources[ 0 ].name), filename + '.json')
 597 }
 598
 599 function updateWebserverConfig () {
 600   CONFIG.WEBSERVER.URL = sanitizeUrl(CONFIG.WEBSERVER.SCHEME + '://' + CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT)
 601   CONFIG.WEBSERVER.HOST = sanitizeHost(CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT, REMOTE_SCHEME.HTTP)
 602 }
 603
 604 function buildLanguages () {
 605   const iso639 = require('iso-639-3')
 606
 607   const languages: { [ id: string ]: string } = {}
 608
 609   const additionalLanguages = {
 610     'sgn': true, // Sign languages (macro language)
 611     'ase': true, // American sign language
 612     'sdl': true, // Arabian sign language
 613     'bfi': true, // British sign language
 614     'bzs': true, // Brazilian sign language
 615     'csl': true, // Chinese sign language
 616     'cse': true, // Czech sign language
 617     'dsl': true, // Danish sign language
 618     'fsl': true, // French sign language
 619     'gsg': true, // German sign language
 620     'pks': true, // Pakistan sign language
 621     'jsl': true, // Japanese sign language
 622     'sfs': true, // South African sign language
 623     'swl': true, // Swedish sign language
 624     'rsl': true, // Russian sign language: true
 625
 626     'epo': true, // Esperanto
 627     'tlh': true, // Klingon
 628     'jbo': true, // Lojban
 629     'avk': true // Kotava
 630   }
 631
 632   // Only add ISO639-1 languages and some sign languages (ISO639-3)
 633   iso639
 634     .filter(l => {
 635       return (l.iso6391 !== null && l.type === 'living') ||
 636         additionalLanguages[l.iso6393] === true
 637     })
 638     .forEach(l => languages[l.iso6391 || l.iso6393] = l.name)
 639
 640   return languages
 641 }
 642
 643 export function reloadConfig () {
 644
 645   function directory () {
 646     if (process.env.NODE_CONFIG_DIR) {
 647       return process.env.NODE_CONFIG_DIR
 648     }
 649
 650     return join(root(), 'config')
 651   }
 652
 653   function purge () {
 654     for (const fileName in require.cache) {
 655       if (-1 === fileName.indexOf(directory())) {
 656         continue
 657       }
 658
 659       delete require.cache[fileName]
 660     }
 661
 662     delete require.cache[require.resolve('config')]
 663   }
 664
 665   purge()
 666
 667   config = require('config')
 668
 669   updateWebserverConfig()
 670 }