server/initializers/constants.ts

   1 import { CronRepeatOptions, EveryRepeatOptions } from 'bull'
   2 import { randomBytes } from 'crypto'
   3 import { invert } from 'lodash'
   4 import { join } from 'path'
   5 import { randomInt, root } from '@shared/core-utils'
   6 import {
   7   AbuseState,
   8   JobType,
   9   VideoImportState,
  10   VideoPrivacy,
  11   VideoRateType,
  12   VideoResolution,
  13   VideoState,
  14   VideoTranscodingFPS
  15 } from '../../shared/models'
  16 import { ActivityPubActorType } from '../../shared/models/activitypub'
  17 import { ActorImageType, FollowState } from '../../shared/models/actors'
  18 import { NSFWPolicyType } from '../../shared/models/videos/nsfw-policy.type'
  19 import { VideoPlaylistPrivacy } from '../../shared/models/videos/playlist/video-playlist-privacy.model'
  20 import { VideoPlaylistType } from '../../shared/models/videos/playlist/video-playlist-type.model'
  21 // Do not use barrels, remain constants as independent as possible
  22 import { isTestInstance, parseDurationToMs, sanitizeHost, sanitizeUrl } from '../helpers/core-utils'
  23 import { CONFIG, registerConfigChangedHandler } from './config'
  24
  25 // ---------------------------------------------------------------------------
  26
  27 const LAST_MIGRATION_VERSION = 700
  28
  29 // ---------------------------------------------------------------------------
  30
  31 const API_VERSION = 'v1'
  32 const PEERTUBE_VERSION: string = require(join(root(), 'package.json')).version
  33
  34 const PAGINATION = {
  35   GLOBAL: {
  36     COUNT: {
  37       DEFAULT: 15,
  38       MAX: 100
  39     }
  40   },
  41   OUTBOX: {
  42     COUNT: {
  43       MAX: 50
  44     }
  45   }
  46 }
  47
  48 const WEBSERVER = {
  49   URL: '',
  50   HOST: '',
  51   SCHEME: '',
  52   WS: '',
  53   HOSTNAME: '',
  54   PORT: 0,
  55   RTMP_URL: '',
  56   RTMPS_URL: ''
  57 }
  58
  59 // Sortable columns per schema
  60 const SORTABLE_COLUMNS = {
  61   USERS: [ 'id', 'username', 'videoQuotaUsed', 'createdAt', 'lastLoginDate', 'role' ],
  62   USER_SUBSCRIPTIONS: [ 'id', 'createdAt' ],
  63   ACCOUNTS: [ 'createdAt' ],
  64   JOBS: [ 'createdAt' ],
  65   VIDEO_CHANNELS: [ 'id', 'name', 'updatedAt', 'createdAt' ],
  66   VIDEO_IMPORTS: [ 'createdAt' ],
  67
  68   VIDEO_COMMENT_THREADS: [ 'createdAt', 'totalReplies' ],
  69   VIDEO_COMMENTS: [ 'createdAt' ],
  70
  71   VIDEO_RATES: [ 'createdAt' ],
  72   BLACKLISTS: [ 'id', 'name', 'duration', 'views', 'likes', 'dislikes', 'uuid', 'createdAt' ],
  73
  74   INSTANCE_FOLLOWERS: [ 'createdAt', 'state', 'score' ],
  75   INSTANCE_FOLLOWING: [ 'createdAt', 'redundancyAllowed', 'state' ],
  76   ACCOUNT_FOLLOWERS: [ 'createdAt' ],
  77   CHANNEL_FOLLOWERS: [ 'createdAt' ],
  78
  79   VIDEOS: [ 'name', 'duration', 'createdAt', 'publishedAt', 'originallyPublishedAt', 'views', 'likes', 'trending', 'hot', 'best' ],
  80
  81   // Don't forget to update peertube-search-index with the same values
  82   VIDEOS_SEARCH: [ 'name', 'duration', 'createdAt', 'publishedAt', 'originallyPublishedAt', 'views', 'likes', 'match' ],
  83   VIDEO_CHANNELS_SEARCH: [ 'match', 'displayName', 'createdAt' ],
  84   VIDEO_PLAYLISTS_SEARCH: [ 'match', 'displayName', 'createdAt' ],
  85
  86   ABUSES: [ 'id', 'createdAt', 'state' ],
  87
  88   ACCOUNTS_BLOCKLIST: [ 'createdAt' ],
  89   SERVERS_BLOCKLIST: [ 'createdAt' ],
  90
  91   USER_NOTIFICATIONS: [ 'createdAt', 'read' ],
  92
  93   VIDEO_PLAYLISTS: [ 'name', 'displayName', 'createdAt', 'updatedAt' ],
  94
  95   PLUGINS: [ 'name', 'createdAt', 'updatedAt' ],
  96
  97   AVAILABLE_PLUGINS: [ 'npmName', 'popularity' ],
  98
  99   VIDEO_REDUNDANCIES: [ 'name' ]
 100 }
 101
 102 const OAUTH_LIFETIME = {
 103   ACCESS_TOKEN: 3600 * 24, // 1 day, for upload
 104   REFRESH_TOKEN: 1209600 // 2 weeks
 105 }
 106
 107 const ROUTE_CACHE_LIFETIME = {
 108   FEEDS: '15 minutes',
 109   ROBOTS: '2 hours',
 110   SITEMAP: '1 day',
 111   SECURITYTXT: '2 hours',
 112   NODEINFO: '10 minutes',
 113   DNT_POLICY: '1 week',
 114   ACTIVITY_PUB: {
 115     VIDEOS: '1 second' // 1 second, cache concurrent requests after a broadcast for example
 116   },
 117   STATS: '4 hours'
 118 }
 119
 120 // ---------------------------------------------------------------------------
 121
 122 // Number of points we add/remove after a successful/bad request
 123 const ACTOR_FOLLOW_SCORE = {
 124   PENALTY: -10,
 125   BONUS: 10,
 126   BASE: 1000,
 127   MAX: 10000
 128 }
 129
 130 const FOLLOW_STATES: { [ id: string ]: FollowState } = {
 131   PENDING: 'pending',
 132   ACCEPTED: 'accepted'
 133 }
 134
 135 const REMOTE_SCHEME = {
 136   HTTP: 'https',
 137   WS: 'wss'
 138 }
 139
 140 const JOB_ATTEMPTS: { [id in JobType]: number } = {
 141   'activitypub-http-broadcast': 1,
 142   'activitypub-http-unicast': 1,
 143   'activitypub-http-fetcher': 2,
 144   'activitypub-follow': 5,
 145   'activitypub-cleaner': 1,
 146   'video-file-import': 1,
 147   'video-transcoding': 1,
 148   'video-import': 1,
 149   'email': 5,
 150   'actor-keys': 3,
 151   'videos-views-stats': 1,
 152   'activitypub-refresher': 1,
 153   'video-redundancy': 1,
 154   'video-live-ending': 1,
 155   'video-studio-edition': 1,
 156   'manage-video-torrent': 1,
 157   'move-to-object-storage': 3
 158 }
 159 // Excluded keys are jobs that can be configured by admins
 160 const JOB_CONCURRENCY: { [id in Exclude<JobType, 'video-transcoding' | 'video-import'>]: number } = {
 161   'activitypub-http-broadcast': 1,
 162   'activitypub-http-unicast': 10,
 163   'activitypub-http-fetcher': 3,
 164   'activitypub-cleaner': 1,
 165   'activitypub-follow': 1,
 166   'video-file-import': 1,
 167   'email': 5,
 168   'actor-keys': 1,
 169   'videos-views-stats': 1,
 170   'activitypub-refresher': 1,
 171   'video-redundancy': 1,
 172   'video-live-ending': 10,
 173   'video-studio-edition': 1,
 174   'manage-video-torrent': 1,
 175   'move-to-object-storage': 1
 176 }
 177 const JOB_TTL: { [id in JobType]: number } = {
 178   'activitypub-http-broadcast': 60000 * 10, // 10 minutes
 179   'activitypub-http-unicast': 60000 * 10, // 10 minutes
 180   'activitypub-http-fetcher': 1000 * 3600 * 10, // 10 hours
 181   'activitypub-follow': 60000 * 10, // 10 minutes
 182   'activitypub-cleaner': 1000 * 3600, // 1 hour
 183   'video-file-import': 1000 * 3600, // 1 hour
 184   'video-transcoding': 1000 * 3600 * 48, // 2 days, transcoding could be long
 185   'video-studio-edition': 1000 * 3600 * 10, // 10 hours
 186   'video-import': 1000 * 3600 * 2, // 2 hours
 187   'email': 60000 * 10, // 10 minutes
 188   'actor-keys': 60000 * 20, // 20 minutes
 189   'videos-views-stats': undefined, // Unlimited
 190   'activitypub-refresher': 60000 * 10, // 10 minutes
 191   'video-redundancy': 1000 * 3600 * 3, // 3 hours
 192   'video-live-ending': 1000 * 60 * 10, // 10 minutes
 193   'manage-video-torrent': 1000 * 3600 * 3, // 3 hours
 194   'move-to-object-storage': 1000 * 60 * 60 * 3 // 3 hours
 195 }
 196 const REPEAT_JOBS: { [ id in JobType ]?: EveryRepeatOptions | CronRepeatOptions } = {
 197   'videos-views-stats': {
 198     cron: randomInt(1, 20) + ' * * * *' // Between 1-20 minutes past the hour
 199   },
 200   'activitypub-cleaner': {
 201     cron: '30 5 * * ' + randomInt(0, 7) // 1 time per week (random day) at 5:30 AM
 202   }
 203 }
 204 const JOB_PRIORITY = {
 205   TRANSCODING: 100
 206 }
 207
 208 const BROADCAST_CONCURRENCY = 30 // How many requests in parallel we do in activitypub-http-broadcast job
 209 const CRAWL_REQUEST_CONCURRENCY = 1 // How many requests in parallel to fetch remote data (likes, shares...)
 210
 211 const AP_CLEANER = {
 212   CONCURRENCY: 10, // How many requests in parallel we do in activitypub-cleaner job
 213   UNAVAILABLE_TRESHOLD: 3, // How many attemps we do before removing an unavailable remote resource
 214   PERIOD: parseDurationToMs('1 week') // /!\ Has to be sync with REPEAT_JOBS
 215 }
 216
 217 const REQUEST_TIMEOUTS = {
 218   DEFAULT: 7000, // 7 seconds
 219   FILE: 30000, // 30 seconds
 220   REDUNDANCY: JOB_TTL['video-redundancy']
 221 }
 222
 223 const JOB_COMPLETED_LIFETIME = 60000 * 60 * 24 * 2 // 2 days
 224 const VIDEO_IMPORT_TIMEOUT = Math.floor(JOB_TTL['video-import'] * 0.9)
 225
 226 const SCHEDULER_INTERVALS_MS = {
 227   ACTOR_FOLLOW_SCORES: 60000 * 60, // 1 hour
 228   REMOVE_OLD_JOBS: 60000 * 60, // 1 hour
 229   UPDATE_VIDEOS: 60000, // 1 minute
 230   YOUTUBE_DL_UPDATE: 60000 * 60 * 24, // 1 day
 231   VIDEO_VIEWS_BUFFER_UPDATE: CONFIG.VIEWS.VIDEOS.LOCAL_BUFFER_UPDATE_INTERVAL,
 232   CHECK_PLUGINS: CONFIG.PLUGINS.INDEX.CHECK_LATEST_VERSIONS_INTERVAL,
 233   CHECK_PEERTUBE_VERSION: 60000 * 60 * 24, // 1 day
 234   AUTO_FOLLOW_INDEX_INSTANCES: 60000 * 60 * 24, // 1 day
 235   REMOVE_OLD_VIEWS: 60000 * 60 * 24, // 1 day
 236   REMOVE_OLD_HISTORY: 60000 * 60 * 24, // 1 day
 237   UPDATE_INBOX_STATS: 1000 * 60, // 1 minute
 238   REMOVE_DANGLING_RESUMABLE_UPLOADS: 60000 * 60 // 1 hour
 239 }
 240
 241 // ---------------------------------------------------------------------------
 242
 243 const CONSTRAINTS_FIELDS = {
 244   USERS: {
 245     NAME: { min: 1, max: 120 }, // Length
 246     DESCRIPTION: { min: 3, max: 1000 }, // Length
 247     USERNAME: { min: 1, max: 50 }, // Length
 248     PASSWORD: { min: 6, max: 255 }, // Length
 249     VIDEO_QUOTA: { min: -1 },
 250     VIDEO_QUOTA_DAILY: { min: -1 },
 251     VIDEO_LANGUAGES: { max: 500 }, // Array length
 252     BLOCKED_REASON: { min: 3, max: 250 } // Length
 253   },
 254   ABUSES: {
 255     REASON: { min: 2, max: 3000 }, // Length
 256     MODERATION_COMMENT: { min: 2, max: 3000 } // Length
 257   },
 258   ABUSE_MESSAGES: {
 259     MESSAGE: { min: 2, max: 3000 } // Length
 260   },
 261   VIDEO_BLACKLIST: {
 262     REASON: { min: 2, max: 300 } // Length
 263   },
 264   VIDEO_CHANNELS: {
 265     NAME: { min: 1, max: 120 }, // Length
 266     DESCRIPTION: { min: 3, max: 1000 }, // Length
 267     SUPPORT: { min: 3, max: 1000 }, // Length
 268     URL: { min: 3, max: 2000 } // Length
 269   },
 270   VIDEO_CAPTIONS: {
 271     CAPTION_FILE: {
 272       EXTNAME: [ '.vtt', '.srt' ],
 273       FILE_SIZE: {
 274         max: 20 * 1024 * 1024 // 20MB
 275       }
 276     }
 277   },
 278   VIDEO_IMPORTS: {
 279     URL: { min: 3, max: 2000 }, // Length
 280     TORRENT_NAME: { min: 3, max: 255 }, // Length
 281     TORRENT_FILE: {
 282       EXTNAME: [ '.torrent' ],
 283       FILE_SIZE: {
 284         max: 1024 * 200 // 200 KB
 285       }
 286     }
 287   },
 288   VIDEOS_REDUNDANCY: {
 289     URL: { min: 3, max: 2000 } // Length
 290   },
 291   VIDEO_RATES: {
 292     URL: { min: 3, max: 2000 } // Length
 293   },
 294   VIDEOS: {
 295     NAME: { min: 3, max: 120 }, // Length
 296     LANGUAGE: { min: 1, max: 10 }, // Length
 297     TRUNCATED_DESCRIPTION: { min: 3, max: 250 }, // Length
 298     DESCRIPTION: { min: 3, max: 10000 }, // Length
 299     SUPPORT: { min: 3, max: 1000 }, // Length
 300     IMAGE: {
 301       EXTNAME: [ '.png', '.jpg', '.jpeg', '.webp' ],
 302       FILE_SIZE: {
 303         max: 4 * 1024 * 1024 // 4MB
 304       }
 305     },
 306     EXTNAME: [] as string[],
 307     INFO_HASH: { min: 40, max: 40 }, // Length, info hash is 20 bytes length but we represent it in hexadecimal so 20 * 2
 308     DURATION: { min: 0 }, // Number
 309     TAGS: { min: 0, max: 5 }, // Number of total tags
 310     TAG: { min: 2, max: 30 }, // Length
 311     VIEWS: { min: 0 },
 312     LIKES: { min: 0 },
 313     DISLIKES: { min: 0 },
 314     FILE_SIZE: { min: -1 },
 315     PARTIAL_UPLOAD_SIZE: { max: 50 * 1024 * 1024 * 1024 }, // 50GB
 316     URL: { min: 3, max: 2000 } // Length
 317   },
 318   VIDEO_PLAYLISTS: {
 319     NAME: { min: 1, max: 120 }, // Length
 320     DESCRIPTION: { min: 3, max: 1000 }, // Length
 321     URL: { min: 3, max: 2000 }, // Length
 322     IMAGE: {
 323       EXTNAME: [ '.jpg', '.jpeg' ],
 324       FILE_SIZE: {
 325         max: 4 * 1024 * 1024 // 4MB
 326       }
 327     }
 328   },
 329   ACTORS: {
 330     PUBLIC_KEY: { min: 10, max: 5000 }, // Length
 331     PRIVATE_KEY: { min: 10, max: 5000 }, // Length
 332     URL: { min: 3, max: 2000 }, // Length
 333     IMAGE: {
 334       EXTNAME: [ '.png', '.jpeg', '.jpg', '.gif', '.webp' ],
 335       FILE_SIZE: {
 336         max: 4 * 1024 * 1024 // 4MB
 337       }
 338     }
 339   },
 340   VIDEO_EVENTS: {
 341     COUNT: { min: 0 }
 342   },
 343   VIDEO_COMMENTS: {
 344     TEXT: { min: 1, max: 10000 }, // Length
 345     URL: { min: 3, max: 2000 } // Length
 346   },
 347   VIDEO_SHARE: {
 348     URL: { min: 3, max: 2000 } // Length
 349   },
 350   CONTACT_FORM: {
 351     FROM_NAME: { min: 1, max: 120 }, // Length
 352     BODY: { min: 3, max: 5000 } // Length
 353   },
 354   PLUGINS: {
 355     NAME: { min: 1, max: 214 }, // Length
 356     DESCRIPTION: { min: 1, max: 20000 } // Length
 357   },
 358   COMMONS: {
 359     URL: { min: 5, max: 2000 } // Length
 360   },
 361   VIDEO_STUDIO: {
 362     TASKS: { min: 1, max: 10 }, // Number of tasks
 363     CUT_TIME: { min: 0 } // Value
 364   }
 365 }
 366
 367 const VIEW_LIFETIME = {
 368   VIEW: CONFIG.VIEWS.VIDEOS.IP_VIEW_EXPIRATION,
 369   VIEWER: 60000 * 5 // 5 minutes
 370 }
 371
 372 let CONTACT_FORM_LIFETIME = 60000 * 60 // 1 hour
 373
 374 const VIDEO_TRANSCODING_FPS: VideoTranscodingFPS = {
 375   MIN: 1,
 376   STANDARD: [ 24, 25, 30 ],
 377   HD_STANDARD: [ 50, 60 ],
 378   AUDIO_MERGE: 25,
 379   AVERAGE: 30,
 380   MAX: 60,
 381   KEEP_ORIGIN_FPS_RESOLUTION_MIN: 720 // We keep the original FPS on high resolutions (720 minimum)
 382 }
 383
 384 const DEFAULT_AUDIO_RESOLUTION = VideoResolution.H_480P
 385
 386 const VIDEO_RATE_TYPES: { [ id: string ]: VideoRateType } = {
 387   LIKE: 'like',
 388   DISLIKE: 'dislike'
 389 }
 390
 391 const FFMPEG_NICE: { [ id: string ]: number } = {
 392   // parent process defaults to niceness = 0
 393   // reminder: lower = higher priority, max value is 19, lowest is -20
 394   LIVE: 5, // prioritize over VOD and THUMBNAIL
 395   THUMBNAIL: 10,
 396   VOD: 15
 397 }
 398
 399 const VIDEO_CATEGORIES = {
 400   1: 'Music',
 401   2: 'Films',
 402   3: 'Vehicles',
 403   4: 'Art',
 404   5: 'Sports',
 405   6: 'Travels',
 406   7: 'Gaming',
 407   8: 'People',
 408   9: 'Comedy',
 409   10: 'Entertainment',
 410   11: 'News & Politics',
 411   12: 'How To',
 412   13: 'Education',
 413   14: 'Activism',
 414   15: 'Science & Technology',
 415   16: 'Animals',
 416   17: 'Kids',
 417   18: 'Food'
 418 }
 419
 420 // See https://creativecommons.org/licenses/?lang=en
 421 const VIDEO_LICENCES = {
 422   1: 'Attribution',
 423   2: 'Attribution - Share Alike',
 424   3: 'Attribution - No Derivatives',
 425   4: 'Attribution - Non Commercial',
 426   5: 'Attribution - Non Commercial - Share Alike',
 427   6: 'Attribution - Non Commercial - No Derivatives',
 428   7: 'Public Domain Dedication'
 429 }
 430
 431 const VIDEO_LANGUAGES: { [id: string]: string } = {}
 432
 433 const VIDEO_PRIVACIES: { [ id in VideoPrivacy ]: string } = {
 434   [VideoPrivacy.PUBLIC]: 'Public',
 435   [VideoPrivacy.UNLISTED]: 'Unlisted',
 436   [VideoPrivacy.PRIVATE]: 'Private',
 437   [VideoPrivacy.INTERNAL]: 'Internal'
 438 }
 439
 440 const VIDEO_STATES: { [ id in VideoState ]: string } = {
 441   [VideoState.PUBLISHED]: 'Published',
 442   [VideoState.TO_TRANSCODE]: 'To transcode',
 443   [VideoState.TO_IMPORT]: 'To import',
 444   [VideoState.WAITING_FOR_LIVE]: 'Waiting for livestream',
 445   [VideoState.LIVE_ENDED]: 'Livestream ended',
 446   [VideoState.TO_MOVE_TO_EXTERNAL_STORAGE]: 'To move to an external storage',
 447   [VideoState.TRANSCODING_FAILED]: 'Transcoding failed',
 448   [VideoState.TO_MOVE_TO_EXTERNAL_STORAGE_FAILED]: 'External storage move failed',
 449   [VideoState.TO_EDIT]: 'To edit*'
 450 }
 451
 452 const VIDEO_IMPORT_STATES: { [ id in VideoImportState ]: string } = {
 453   [VideoImportState.FAILED]: 'Failed',
 454   [VideoImportState.PENDING]: 'Pending',
 455   [VideoImportState.SUCCESS]: 'Success',
 456   [VideoImportState.REJECTED]: 'Rejected',
 457   [VideoImportState.CANCELLED]: 'Cancelled',
 458   [VideoImportState.PROCESSING]: 'Processing'
 459 }
 460
 461 const ABUSE_STATES: { [ id in AbuseState ]: string } = {
 462   [AbuseState.PENDING]: 'Pending',
 463   [AbuseState.REJECTED]: 'Rejected',
 464   [AbuseState.ACCEPTED]: 'Accepted'
 465 }
 466
 467 const VIDEO_PLAYLIST_PRIVACIES: { [ id in VideoPlaylistPrivacy ]: string } = {
 468   [VideoPlaylistPrivacy.PUBLIC]: 'Public',
 469   [VideoPlaylistPrivacy.UNLISTED]: 'Unlisted',
 470   [VideoPlaylistPrivacy.PRIVATE]: 'Private'
 471 }
 472
 473 const VIDEO_PLAYLIST_TYPES: { [ id in VideoPlaylistType ]: string } = {
 474   [VideoPlaylistType.REGULAR]: 'Regular',
 475   [VideoPlaylistType.WATCH_LATER]: 'Watch later'
 476 }
 477
 478 const MIMETYPES = {
 479   AUDIO: {
 480     MIMETYPE_EXT: {
 481       'audio/mpeg': '.mp3',
 482       'audio/mp3': '.mp3',
 483       'application/ogg': '.ogg',
 484       'audio/ogg': '.ogg',
 485       'audio/x-ms-wma': '.wma',
 486       'audio/wav': '.wav',
 487       'audio/x-wav': '.wav',
 488       'audio/x-flac': '.flac',
 489       'audio/flac': '.flac',
 490       'audio/aac': '.aac',
 491       'audio/m4a': '.m4a',
 492       'audio/mp4': '.m4a',
 493       'audio/x-m4a': '.m4a',
 494       'audio/ac3': '.ac3'
 495     },
 496     EXT_MIMETYPE: null as { [ id: string ]: string }
 497   },
 498   VIDEO: {
 499     MIMETYPE_EXT: null as { [ id: string ]: string | string[] },
 500     MIMETYPES_REGEX: null as string,
 501     EXT_MIMETYPE: null as { [ id: string ]: string }
 502   },
 503   IMAGE: {
 504     MIMETYPE_EXT: {
 505       'image/png': '.png',
 506       'image/gif': '.gif',
 507       'image/webp': '.webp',
 508       'image/jpg': '.jpg',
 509       'image/jpeg': '.jpg'
 510     },
 511     EXT_MIMETYPE: null as { [ id: string ]: string }
 512   },
 513   VIDEO_CAPTIONS: {
 514     MIMETYPE_EXT: {
 515       'text/vtt': '.vtt',
 516       'application/x-subrip': '.srt',
 517       'text/plain': '.srt'
 518     }
 519   },
 520   TORRENT: {
 521     MIMETYPE_EXT: {
 522       'application/x-bittorrent': '.torrent'
 523     }
 524   }
 525 }
 526 MIMETYPES.AUDIO.EXT_MIMETYPE = invert(MIMETYPES.AUDIO.MIMETYPE_EXT)
 527 MIMETYPES.IMAGE.EXT_MIMETYPE = invert(MIMETYPES.IMAGE.MIMETYPE_EXT)
 528
 529 const BINARY_CONTENT_TYPES = new Set([
 530   'binary/octet-stream',
 531   'application/octet-stream',
 532   'application/x-binary'
 533 ])
 534
 535 // ---------------------------------------------------------------------------
 536
 537 const OVERVIEWS = {
 538   VIDEOS: {
 539     SAMPLE_THRESHOLD: 6,
 540     SAMPLES_COUNT: 20
 541   }
 542 }
 543
 544 // ---------------------------------------------------------------------------
 545
 546 const SERVER_ACTOR_NAME = 'peertube'
 547
 548 const ACTIVITY_PUB = {
 549   POTENTIAL_ACCEPT_HEADERS: [
 550     'application/activity+json',
 551     'application/ld+json',
 552     'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'
 553   ],
 554   ACCEPT_HEADER: 'application/activity+json, application/ld+json',
 555   PUBLIC: 'https://www.w3.org/ns/activitystreams#Public',
 556   COLLECTION_ITEMS_PER_PAGE: 10,
 557   FETCH_PAGE_LIMIT: 2000,
 558   URL_MIME_TYPES: {
 559     VIDEO: [] as string[],
 560     TORRENT: [ 'application/x-bittorrent' ],
 561     MAGNET: [ 'application/x-bittorrent;x-scheme-handler/magnet' ]
 562   },
 563   MAX_RECURSION_COMMENTS: 100,
 564   ACTOR_REFRESH_INTERVAL: 3600 * 24 * 1000 * 2, // 2 days
 565   VIDEO_REFRESH_INTERVAL: 3600 * 24 * 1000 * 2, // 2 days
 566   VIDEO_PLAYLIST_REFRESH_INTERVAL: 3600 * 24 * 1000 * 2 // 2 days
 567 }
 568
 569 const ACTIVITY_PUB_ACTOR_TYPES: { [ id: string ]: ActivityPubActorType } = {
 570   GROUP: 'Group',
 571   PERSON: 'Person',
 572   APPLICATION: 'Application',
 573   ORGANIZATION: 'Organization',
 574   SERVICE: 'Service'
 575 }
 576
 577 const HTTP_SIGNATURE = {
 578   HEADER_NAME: 'signature',
 579   ALGORITHM: 'rsa-sha256',
 580   HEADERS_TO_SIGN: [ '(request-target)', 'host', 'date', 'digest' ],
 581   REQUIRED_HEADERS: {
 582     ALL: [ '(request-target)', 'host', 'date' ],
 583     POST: [ '(request-target)', 'host', 'date', 'digest' ]
 584   },
 585   CLOCK_SKEW_SECONDS: 1800
 586 }
 587
 588 // ---------------------------------------------------------------------------
 589
 590 let PRIVATE_RSA_KEY_SIZE = 2048
 591
 592 // Password encryption
 593 const BCRYPT_SALT_SIZE = 10
 594
 595 const USER_PASSWORD_RESET_LIFETIME = 60000 * 60 // 60 minutes
 596 const USER_PASSWORD_CREATE_LIFETIME = 60000 * 60 * 24 * 7 // 7 days
 597
 598 const USER_EMAIL_VERIFY_LIFETIME = 60000 * 60 // 60 minutes
 599
 600 const NSFW_POLICY_TYPES: { [ id: string ]: NSFWPolicyType } = {
 601   DO_NOT_LIST: 'do_not_list',
 602   BLUR: 'blur',
 603   DISPLAY: 'display'
 604 }
 605
 606 // ---------------------------------------------------------------------------
 607
 608 // Express static paths (router)
 609 const STATIC_PATHS = {
 610   THUMBNAILS: '/static/thumbnails/',
 611   WEBSEED: '/static/webseed/',
 612   REDUNDANCY: '/static/redundancy/',
 613   STREAMING_PLAYLISTS: {
 614     HLS: '/static/streaming-playlists/hls'
 615   }
 616 }
 617 const STATIC_DOWNLOAD_PATHS = {
 618   TORRENTS: '/download/torrents/',
 619   VIDEOS: '/download/videos/',
 620   HLS_VIDEOS: '/download/streaming-playlists/hls/videos/'
 621 }
 622 const LAZY_STATIC_PATHS = {
 623   BANNERS: '/lazy-static/banners/',
 624   AVATARS: '/lazy-static/avatars/',
 625   PREVIEWS: '/lazy-static/previews/',
 626   VIDEO_CAPTIONS: '/lazy-static/video-captions/',
 627   TORRENTS: '/lazy-static/torrents/'
 628 }
 629
 630 // Cache control
 631 const STATIC_MAX_AGE = {
 632   SERVER: '2h',
 633   LAZY_SERVER: '2d',
 634   CLIENT: '30d'
 635 }
 636
 637 // Videos thumbnail size
 638 const THUMBNAILS_SIZE = {
 639   width: 280,
 640   height: 157,
 641   minWidth: 150
 642 }
 643 const PREVIEWS_SIZE = {
 644   width: 850,
 645   height: 480,
 646   minWidth: 400
 647 }
 648 const ACTOR_IMAGES_SIZE: { [key in ActorImageType]: { width: number, height: number }[]} = {
 649   [ActorImageType.AVATAR]: [
 650     {
 651       width: 120,
 652       height: 120
 653     },
 654     {
 655       width: 48,
 656       height: 48
 657     }
 658   ],
 659   [ActorImageType.BANNER]: [
 660     {
 661       width: 1920,
 662       height: 317 // 6/1 ratio
 663     }
 664   ]
 665 }
 666
 667 const EMBED_SIZE = {
 668   width: 560,
 669   height: 315
 670 }
 671
 672 // Sub folders of cache directory
 673 const FILES_CACHE = {
 674   PREVIEWS: {
 675     DIRECTORY: join(CONFIG.STORAGE.CACHE_DIR, 'previews'),
 676     MAX_AGE: 1000 * 3600 * 3 // 3 hours
 677   },
 678   VIDEO_CAPTIONS: {
 679     DIRECTORY: join(CONFIG.STORAGE.CACHE_DIR, 'video-captions'),
 680     MAX_AGE: 1000 * 3600 * 3 // 3 hours
 681   },
 682   TORRENTS: {
 683     DIRECTORY: join(CONFIG.STORAGE.CACHE_DIR, 'torrents'),
 684     MAX_AGE: 1000 * 3600 * 3 // 3 hours
 685   }
 686 }
 687
 688 const LRU_CACHE = {
 689   USER_TOKENS: {
 690     MAX_SIZE: 1000
 691   },
 692   ACTOR_IMAGE_STATIC: {
 693     MAX_SIZE: 500
 694   }
 695 }
 696
 697 const RESUMABLE_UPLOAD_DIRECTORY = join(CONFIG.STORAGE.TMP_DIR, 'resumable-uploads')
 698 const HLS_STREAMING_PLAYLIST_DIRECTORY = join(CONFIG.STORAGE.STREAMING_PLAYLISTS_DIR, 'hls')
 699 const HLS_REDUNDANCY_DIRECTORY = join(CONFIG.STORAGE.REDUNDANCY_DIR, 'hls')
 700
 701 const RESUMABLE_UPLOAD_SESSION_LIFETIME = SCHEDULER_INTERVALS_MS.REMOVE_DANGLING_RESUMABLE_UPLOADS
 702
 703 const VIDEO_LIVE = {
 704   EXTENSION: '.ts',
 705   CLEANUP_DELAY: 1000 * 60 * 5, // 5 minutes
 706   SEGMENT_TIME_SECONDS: {
 707     DEFAULT_LATENCY: 4, // 4 seconds
 708     SMALL_LATENCY: 2 // 2 seconds
 709   },
 710   SEGMENTS_LIST_SIZE: 15, // 15 maximum segments in live playlist
 711   REPLAY_DIRECTORY: 'replay',
 712   EDGE_LIVE_DELAY_SEGMENTS_NOTIFICATION: 4,
 713   MAX_SOCKET_WAITING_DATA: 1024 * 1000 * 100, // 100MB
 714   RTMP: {
 715     CHUNK_SIZE: 60000,
 716     GOP_CACHE: true,
 717     PING: 60,
 718     PING_TIMEOUT: 30,
 719     BASE_PATH: 'live'
 720   }
 721 }
 722
 723 const MEMOIZE_TTL = {
 724   OVERVIEWS_SAMPLE: 1000 * 3600 * 4, // 4 hours
 725   INFO_HASH_EXISTS: 1000 * 3600 * 12, // 12 hours
 726   LIVE_ABLE_TO_UPLOAD: 1000 * 60, // 1 minute
 727   LIVE_CHECK_SOCKET_HEALTH: 1000 * 60 // 1 minute
 728 }
 729
 730 const MEMOIZE_LENGTH = {
 731   INFO_HASH_EXISTS: 200
 732 }
 733
 734 const QUEUE_CONCURRENCY = {
 735   ACTOR_PROCESS_IMAGE: 3
 736 }
 737
 738 const REDUNDANCY = {
 739   VIDEOS: {
 740     RANDOMIZED_FACTOR: 5
 741   }
 742 }
 743
 744 const ACCEPT_HEADERS = [ 'html', 'application/json' ].concat(ACTIVITY_PUB.POTENTIAL_ACCEPT_HEADERS)
 745
 746 const ASSETS_PATH = {
 747   DEFAULT_AUDIO_BACKGROUND: join(root(), 'dist', 'server', 'assets', 'default-audio-background.jpg'),
 748   DEFAULT_LIVE_BACKGROUND: join(root(), 'dist', 'server', 'assets', 'default-live-background.jpg')
 749 }
 750
 751 // ---------------------------------------------------------------------------
 752
 753 const CUSTOM_HTML_TAG_COMMENTS = {
 754   TITLE: '<!-- title tag -->',
 755   DESCRIPTION: '<!-- description tag -->',
 756   CUSTOM_CSS: '<!-- custom css tag -->',
 757   META_TAGS: '<!-- meta tags -->',
 758   SERVER_CONFIG: '<!-- server config -->'
 759 }
 760
 761 // ---------------------------------------------------------------------------
 762
 763 const FEEDS = {
 764   COUNT: 20
 765 }
 766
 767 const MAX_LOGS_OUTPUT_CHARACTERS = 10 * 1000 * 1000
 768 const LOG_FILENAME = 'peertube.log'
 769 const AUDIT_LOG_FILENAME = 'peertube-audit.log'
 770
 771 // ---------------------------------------------------------------------------
 772
 773 const TRACKER_RATE_LIMITS = {
 774   INTERVAL: 60000 * 5, // 5 minutes
 775   ANNOUNCES_PER_IP_PER_INFOHASH: 15, // maximum announces per torrent in the interval
 776   ANNOUNCES_PER_IP: 30, // maximum announces for all our torrents in the interval
 777   BLOCK_IP_LIFETIME: 60000 * 3 // 3 minutes
 778 }
 779
 780 const P2P_MEDIA_LOADER_PEER_VERSION = 2
 781
 782 // ---------------------------------------------------------------------------
 783
 784 const PLUGIN_GLOBAL_CSS_FILE_NAME = 'plugins-global.css'
 785 const PLUGIN_GLOBAL_CSS_PATH = join(CONFIG.STORAGE.TMP_DIR, PLUGIN_GLOBAL_CSS_FILE_NAME)
 786
 787 let PLUGIN_EXTERNAL_AUTH_TOKEN_LIFETIME = 1000 * 60 * 5 // 5 minutes
 788
 789 const DEFAULT_THEME_NAME = 'default'
 790 const DEFAULT_USER_THEME_NAME = 'instance-default'
 791
 792 // ---------------------------------------------------------------------------
 793
 794 const SEARCH_INDEX = {
 795   ROUTES: {
 796     VIDEOS: '/api/v1/search/videos',
 797     VIDEO_CHANNELS: '/api/v1/search/video-channels'
 798   }
 799 }
 800
 801 // ---------------------------------------------------------------------------
 802
 803 // Special constants for a test instance
 804 if (isTestInstance() === true) {
 805   PRIVATE_RSA_KEY_SIZE = 1024
 806
 807   ACTOR_FOLLOW_SCORE.BASE = 20
 808
 809   REMOTE_SCHEME.HTTP = 'http'
 810   REMOTE_SCHEME.WS = 'ws'
 811
 812   STATIC_MAX_AGE.SERVER = '0'
 813
 814   ACTIVITY_PUB.COLLECTION_ITEMS_PER_PAGE = 2
 815   ACTIVITY_PUB.ACTOR_REFRESH_INTERVAL = 10 * 1000 // 10 seconds
 816   ACTIVITY_PUB.VIDEO_REFRESH_INTERVAL = 10 * 1000 // 10 seconds
 817   ACTIVITY_PUB.VIDEO_PLAYLIST_REFRESH_INTERVAL = 10 * 1000 // 10 seconds
 818
 819   CONSTRAINTS_FIELDS.ACTORS.IMAGE.FILE_SIZE.max = 100 * 1024 // 100KB
 820   CONSTRAINTS_FIELDS.VIDEOS.IMAGE.FILE_SIZE.max = 400 * 1024 // 400KB
 821
 822   SCHEDULER_INTERVALS_MS.ACTOR_FOLLOW_SCORES = 1000
 823   SCHEDULER_INTERVALS_MS.REMOVE_OLD_JOBS = 10000
 824   SCHEDULER_INTERVALS_MS.REMOVE_OLD_HISTORY = 5000
 825   SCHEDULER_INTERVALS_MS.REMOVE_OLD_VIEWS = 5000
 826   SCHEDULER_INTERVALS_MS.UPDATE_VIDEOS = 5000
 827   SCHEDULER_INTERVALS_MS.AUTO_FOLLOW_INDEX_INSTANCES = 5000
 828   SCHEDULER_INTERVALS_MS.UPDATE_INBOX_STATS = 5000
 829   SCHEDULER_INTERVALS_MS.CHECK_PEERTUBE_VERSION = 2000
 830
 831   REPEAT_JOBS['videos-views-stats'] = { every: 5000 }
 832
 833   REPEAT_JOBS['activitypub-cleaner'] = { every: 5000 }
 834   AP_CLEANER.PERIOD = 5000
 835
 836   REDUNDANCY.VIDEOS.RANDOMIZED_FACTOR = 1
 837
 838   VIEW_LIFETIME.VIEWER = 1000 * 5 // 5 second
 839   CONTACT_FORM_LIFETIME = 1000 // 1 second
 840
 841   JOB_ATTEMPTS['email'] = 1
 842
 843   FILES_CACHE.VIDEO_CAPTIONS.MAX_AGE = 3000
 844   MEMOIZE_TTL.OVERVIEWS_SAMPLE = 3000
 845   MEMOIZE_TTL.LIVE_ABLE_TO_UPLOAD = 3000
 846   OVERVIEWS.VIDEOS.SAMPLE_THRESHOLD = 2
 847
 848   PLUGIN_EXTERNAL_AUTH_TOKEN_LIFETIME = 5000
 849
 850   VIDEO_LIVE.CLEANUP_DELAY = 5000
 851   VIDEO_LIVE.SEGMENT_TIME_SECONDS.DEFAULT_LATENCY = 2
 852   VIDEO_LIVE.SEGMENT_TIME_SECONDS.SMALL_LATENCY = 1
 853   VIDEO_LIVE.EDGE_LIVE_DELAY_SEGMENTS_NOTIFICATION = 1
 854 }
 855
 856 updateWebserverUrls()
 857 updateWebserverConfig()
 858
 859 registerConfigChangedHandler(() => {
 860   updateWebserverUrls()
 861   updateWebserverConfig()
 862 })
 863
 864 // ---------------------------------------------------------------------------
 865
 866 const FILES_CONTENT_HASH = {
 867   MANIFEST: generateContentHash(),
 868   FAVICON: generateContentHash(),
 869   LOGO: generateContentHash()
 870 }
 871
 872 // ---------------------------------------------------------------------------
 873
 874 const VIDEO_FILTERS = {
 875   WATERMARK: {
 876     SIZE_RATIO: 1 / 10,
 877     HORIZONTAL_MARGIN_RATIO: 1 / 20,
 878     VERTICAL_MARGIN_RATIO: 1 / 20
 879   }
 880 }
 881
 882 // ---------------------------------------------------------------------------
 883
 884 export {
 885   WEBSERVER,
 886   API_VERSION,
 887   VIDEO_LIVE,
 888   PEERTUBE_VERSION,
 889   LAZY_STATIC_PATHS,
 890   SEARCH_INDEX,
 891   RESUMABLE_UPLOAD_DIRECTORY,
 892   RESUMABLE_UPLOAD_SESSION_LIFETIME,
 893   HLS_REDUNDANCY_DIRECTORY,
 894   P2P_MEDIA_LOADER_PEER_VERSION,
 895   ACTOR_IMAGES_SIZE,
 896   ACCEPT_HEADERS,
 897   BCRYPT_SALT_SIZE,
 898   TRACKER_RATE_LIMITS,
 899   FILES_CACHE,
 900   LOG_FILENAME,
 901   CONSTRAINTS_FIELDS,
 902   EMBED_SIZE,
 903   REDUNDANCY,
 904   JOB_CONCURRENCY,
 905   JOB_ATTEMPTS,
 906   AP_CLEANER,
 907   LAST_MIGRATION_VERSION,
 908   OAUTH_LIFETIME,
 909   CUSTOM_HTML_TAG_COMMENTS,
 910   BROADCAST_CONCURRENCY,
 911   AUDIT_LOG_FILENAME,
 912   PAGINATION,
 913   ACTOR_FOLLOW_SCORE,
 914   PREVIEWS_SIZE,
 915   REMOTE_SCHEME,
 916   FOLLOW_STATES,
 917   DEFAULT_USER_THEME_NAME,
 918   SERVER_ACTOR_NAME,
 919   PLUGIN_GLOBAL_CSS_FILE_NAME,
 920   PLUGIN_GLOBAL_CSS_PATH,
 921   PRIVATE_RSA_KEY_SIZE,
 922   VIDEO_FILTERS,
 923   ROUTE_CACHE_LIFETIME,
 924   SORTABLE_COLUMNS,
 925   HLS_STREAMING_PLAYLIST_DIRECTORY,
 926   FEEDS,
 927   JOB_TTL,
 928   DEFAULT_THEME_NAME,
 929   NSFW_POLICY_TYPES,
 930   STATIC_MAX_AGE,
 931   STATIC_PATHS,
 932   VIDEO_IMPORT_TIMEOUT,
 933   VIDEO_PLAYLIST_TYPES,
 934   MAX_LOGS_OUTPUT_CHARACTERS,
 935   ACTIVITY_PUB,
 936   ACTIVITY_PUB_ACTOR_TYPES,
 937   THUMBNAILS_SIZE,
 938   VIDEO_CATEGORIES,
 939   MEMOIZE_LENGTH,
 940   VIDEO_LANGUAGES,
 941   VIDEO_PRIVACIES,
 942   VIDEO_LICENCES,
 943   VIDEO_STATES,
 944   QUEUE_CONCURRENCY,
 945   VIDEO_RATE_TYPES,
 946   JOB_PRIORITY,
 947   VIDEO_TRANSCODING_FPS,
 948   FFMPEG_NICE,
 949   ABUSE_STATES,
 950   LRU_CACHE,
 951   REQUEST_TIMEOUTS,
 952   USER_PASSWORD_RESET_LIFETIME,
 953   USER_PASSWORD_CREATE_LIFETIME,
 954   MEMOIZE_TTL,
 955   USER_EMAIL_VERIFY_LIFETIME,
 956   OVERVIEWS,
 957   SCHEDULER_INTERVALS_MS,
 958   REPEAT_JOBS,
 959   STATIC_DOWNLOAD_PATHS,
 960   MIMETYPES,
 961   CRAWL_REQUEST_CONCURRENCY,
 962   DEFAULT_AUDIO_RESOLUTION,
 963   BINARY_CONTENT_TYPES,
 964   JOB_COMPLETED_LIFETIME,
 965   HTTP_SIGNATURE,
 966   VIDEO_IMPORT_STATES,
 967   VIEW_LIFETIME,
 968   CONTACT_FORM_LIFETIME,
 969   VIDEO_PLAYLIST_PRIVACIES,
 970   PLUGIN_EXTERNAL_AUTH_TOKEN_LIFETIME,
 971   ASSETS_PATH,
 972   FILES_CONTENT_HASH,
 973   loadLanguages,
 974   buildLanguages,
 975   generateContentHash
 976 }
 977
 978 // ---------------------------------------------------------------------------
 979
 980 function buildVideoMimetypeExt () {
 981   const data = {
 982     // streamable formats that warrant cross-browser compatibility
 983     'video/webm': '.webm',
 984     // We'll add .ogg if additional extensions are enabled
 985     // We could add .ogg here but since it could be an audio file,
 986     // it would be confusing for users because PeerTube will refuse their file (based on the mimetype)
 987     'video/ogg': [ '.ogv' ],
 988     'video/mp4': '.mp4'
 989   }
 990
 991   if (CONFIG.TRANSCODING.ENABLED) {
 992     if (CONFIG.TRANSCODING.ALLOW_ADDITIONAL_EXTENSIONS) {
 993       data['video/ogg'].push('.ogg')
 994
 995       Object.assign(data, {
 996         'video/x-matroska': '.mkv',
 997
 998         // Developed by Apple
 999         'video/quicktime': [ '.mov', '.qt', '.mqv' ], // often used as output format by editing software
1000         'video/x-m4v': '.m4v',
1001         'video/m4v': '.m4v',
1002
1003         // Developed by the Adobe Flash Platform
1004         'video/x-flv': '.flv',
1005         'video/x-f4v': '.f4v', // replacement for flv
1006
1007         // Developed by Microsoft
1008         'video/x-ms-wmv': '.wmv',
1009         'video/x-msvideo': '.avi',
1010         'video/avi': '.avi',
1011
1012         // Developed by 3GPP
1013         // common video formats for cell phones
1014         'video/3gpp': [ '.3gp', '.3gpp' ],
1015         'video/3gpp2': [ '.3g2', '.3gpp2' ],
1016
1017         // Developed by FFmpeg/Mplayer
1018         'application/x-nut': '.nut',
1019
1020         // The standard video format used by many Sony and Panasonic HD camcorders.
1021         // It is also used for storing high definition video on Blu-ray discs.
1022         'video/mp2t': '.mts',
1023         'video/m2ts': '.m2ts',
1024
1025         // Old formats reliant on MPEG-1/MPEG-2
1026         'video/mpv': '.mpv',
1027         'video/mpeg2': '.m2v',
1028         'video/mpeg': [ '.m1v', '.mpg', '.mpe', '.mpeg', '.vob' ],
1029         'video/dvd': '.vob',
1030
1031         // Could be anything
1032         'application/octet-stream': null,
1033         'application/mxf': '.mxf' // often used as exchange format by editing software
1034       })
1035     }
1036
1037     if (CONFIG.TRANSCODING.ALLOW_AUDIO_FILES) {
1038       Object.assign(data, MIMETYPES.AUDIO.MIMETYPE_EXT)
1039     }
1040   }
1041
1042   return data
1043 }
1044
1045 function updateWebserverUrls () {
1046   WEBSERVER.URL = sanitizeUrl(CONFIG.WEBSERVER.SCHEME + '://' + CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT)
1047   WEBSERVER.HOST = sanitizeHost(CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT, REMOTE_SCHEME.HTTP)
1048   WEBSERVER.WS = CONFIG.WEBSERVER.WS
1049
1050   WEBSERVER.SCHEME = CONFIG.WEBSERVER.SCHEME
1051   WEBSERVER.HOSTNAME = CONFIG.WEBSERVER.HOSTNAME
1052   WEBSERVER.PORT = CONFIG.WEBSERVER.PORT
1053
1054   WEBSERVER.RTMP_URL = 'rtmp://' + CONFIG.LIVE.RTMP.HOSTNAME + ':' + CONFIG.LIVE.RTMP.PORT + '/' + VIDEO_LIVE.RTMP.BASE_PATH
1055   WEBSERVER.RTMPS_URL = 'rtmps://' + CONFIG.LIVE.RTMPS.HOSTNAME + ':' + CONFIG.LIVE.RTMPS.PORT + '/' + VIDEO_LIVE.RTMP.BASE_PATH
1056 }
1057
1058 function updateWebserverConfig () {
1059   MIMETYPES.VIDEO.MIMETYPE_EXT = buildVideoMimetypeExt()
1060   MIMETYPES.VIDEO.MIMETYPES_REGEX = buildMimetypesRegex(MIMETYPES.VIDEO.MIMETYPE_EXT)
1061
1062   ACTIVITY_PUB.URL_MIME_TYPES.VIDEO = Object.keys(MIMETYPES.VIDEO.MIMETYPE_EXT)
1063
1064   MIMETYPES.VIDEO.EXT_MIMETYPE = buildVideoExtMimetype(MIMETYPES.VIDEO.MIMETYPE_EXT)
1065
1066   CONSTRAINTS_FIELDS.VIDEOS.EXTNAME = Object.keys(MIMETYPES.VIDEO.EXT_MIMETYPE)
1067 }
1068
1069 function buildVideoExtMimetype (obj: { [ id: string ]: string | string[] }) {
1070   const result: { [id: string]: string } = {}
1071
1072   for (const mimetype of Object.keys(obj)) {
1073     const value = obj[mimetype]
1074     if (!value) continue
1075
1076     const extensions = Array.isArray(value) ? value : [ value ]
1077
1078     for (const extension of extensions) {
1079       result[extension] = mimetype
1080     }
1081   }
1082
1083   return result
1084 }
1085
1086 function buildMimetypesRegex (obj: { [id: string]: string | string[] }) {
1087   return Object.keys(obj)
1088     .map(m => `(${m})`)
1089     .join('|')
1090 }
1091
1092 function loadLanguages () {
1093   Object.assign(VIDEO_LANGUAGES, buildLanguages())
1094 }
1095
1096 function buildLanguages () {
1097   const iso639 = require('iso-639-3')
1098
1099   const languages: { [id: string]: string } = {}
1100
1101   const additionalLanguages = {
1102     sgn: true, // Sign languages (macro language)
1103     ase: true, // American sign language
1104     sdl: true, // Arabian sign language
1105     bfi: true, // British sign language
1106     bzs: true, // Brazilian sign language
1107     csl: true, // Chinese sign language
1108     cse: true, // Czech sign language
1109     dsl: true, // Danish sign language
1110     fsl: true, // French sign language
1111     gsg: true, // German sign language
1112     pks: true, // Pakistan sign language
1113     jsl: true, // Japanese sign language
1114     sfs: true, // South African sign language
1115     swl: true, // Swedish sign language
1116     rsl: true, // Russian sign language
1117
1118     kab: true, // Kabyle
1119
1120     lat: true, // Latin
1121
1122     epo: true, // Esperanto
1123     tlh: true, // Klingon
1124     jbo: true, // Lojban
1125     avk: true, // Kotava
1126
1127     zxx: true // No linguistic content (ISO-639-2)
1128   }
1129
1130   // Only add ISO639-1 languages and some sign languages (ISO639-3)
1131   iso639
1132     .filter(l => {
1133       return (l.iso6391 !== undefined && l.type === 'living') ||
1134         additionalLanguages[l.iso6393] === true
1135     })
1136     .forEach(l => { languages[l.iso6391 || l.iso6393] = l.name })
1137
1138   // Override Occitan label
1139   languages['oc'] = 'Occitan'
1140   languages['el'] = 'Greek'
1141
1142   // Chinese languages
1143   languages['zh-Hans'] = 'Simplified Chinese'
1144   languages['zh-Hant'] = 'Traditional Chinese'
1145
1146   return languages
1147 }
1148
1149 function generateContentHash () {
1150   return randomBytes(20).toString('hex')
1151 }