server/lib/activitypub/actor.ts

   1 import * as Bluebird from 'bluebird'
   2 import { Transaction } from 'sequelize'
   3 import * as url from 'url'
   4 import * as uuidv4 from 'uuid/v4'
   5 import { ActivityPubActor, ActivityPubActorType } from '../../../shared/models/activitypub'
   6 import { ActivityPubAttributedTo } from '../../../shared/models/activitypub/objects'
   7 import { checkUrlsSameHost, getAPId } from '../../helpers/activitypub'
   8 import { sanitizeAndCheckActorObject } from '../../helpers/custom-validators/activitypub/actor'
   9 import { isActivityPubUrlValid } from '../../helpers/custom-validators/activitypub/misc'
  10 import { retryTransactionWrapper, updateInstanceWithAnother } from '../../helpers/database-utils'
  11 import { logger } from '../../helpers/logger'
  12 import { createPrivateAndPublicKeys } from '../../helpers/peertube-crypto'
  13 import { doRequest } from '../../helpers/requests'
  14 import { getUrlFromWebfinger } from '../../helpers/webfinger'
  15 import { MIMETYPES, WEBSERVER } from '../../initializers/constants'
  16 import { AccountModel } from '../../models/account/account'
  17 import { ActorModel } from '../../models/activitypub/actor'
  18 import { AvatarModel } from '../../models/avatar/avatar'
  19 import { ServerModel } from '../../models/server/server'
  20 import { VideoChannelModel } from '../../models/video/video-channel'
  21 import { JobQueue } from '../job-queue'
  22 import { getServerActor } from '../../helpers/utils'
  23 import { ActorFetchByUrlType, fetchActorByUrl } from '../../helpers/actor'
  24 import { sequelizeTypescript } from '../../initializers/database'
  25 import {
  26   MAccount,
  27   MAccountDefault,
  28   MActor,
  29   MActorAccountChannelId,
  30   MActorAccountChannelIdActor,
  31   MActorAccountId,
  32   MActorDefault,
  33   MActorFull,
  34   MActorFullActor,
  35   MActorId,
  36   MChannel,
  37   MChannelAccountDefault
  38 } from '../../typings/models'
  39
  40 // Set account keys, this could be long so process after the account creation and do not block the client
  41 function setAsyncActorKeys <T extends MActor> (actor: T) {
  42   return createPrivateAndPublicKeys()
  43     .then(({ publicKey, privateKey }) => {
  44       actor.publicKey = publicKey
  45       actor.privateKey = privateKey
  46       return actor.save()
  47     })
  48     .catch(err => {
  49       logger.error('Cannot set public/private keys of actor %d.', actor.url, { err })
  50       return actor
  51     })
  52 }
  53
  54 function getOrCreateActorAndServerAndModel (
  55   activityActor: string | ActivityPubActor,
  56   fetchType: 'all',
  57   recurseIfNeeded?: boolean,
  58   updateCollections?: boolean
  59 ): Promise<MActorFullActor>
  60
  61 function getOrCreateActorAndServerAndModel (
  62   activityActor: string | ActivityPubActor,
  63   fetchType?: 'association-ids',
  64   recurseIfNeeded?: boolean,
  65   updateCollections?: boolean
  66 ): Promise<MActorAccountChannelId>
  67
  68 async function getOrCreateActorAndServerAndModel (
  69   activityActor: string | ActivityPubActor,
  70   fetchType: ActorFetchByUrlType = 'association-ids',
  71   recurseIfNeeded = true,
  72   updateCollections = false
  73 ): Promise<MActorFullActor | MActorAccountChannelId> {
  74   const actorUrl = getAPId(activityActor)
  75   let created = false
  76   let accountPlaylistsUrl: string
  77
  78   let actor = await fetchActorByUrl(actorUrl, fetchType)
  79   // Orphan actor (not associated to an account of channel) so recreate it
  80   if (actor && (!actor.Account && !actor.VideoChannel)) {
  81     await actor.destroy()
  82     actor = null
  83   }
  84
  85   // We don't have this actor in our database, fetch it on remote
  86   if (!actor) {
  87     const { result } = await fetchRemoteActor(actorUrl)
  88     if (result === undefined) throw new Error('Cannot fetch remote actor ' + actorUrl)
  89
  90     // Create the attributed to actor
  91     // In PeerTube a video channel is owned by an account
  92     let ownerActor: MActorFullActor
  93     if (recurseIfNeeded === true && result.actor.type === 'Group') {
  94       const accountAttributedTo = result.attributedTo.find(a => a.type === 'Person')
  95       if (!accountAttributedTo) throw new Error('Cannot find account attributed to video channel ' + actor.url)
  96
  97       if (checkUrlsSameHost(accountAttributedTo.id, actorUrl) !== true) {
  98         throw new Error(`Account attributed to ${accountAttributedTo.id} does not have the same host than actor url ${actorUrl}`)
  99       }
 100
 101       try {
 102         // Don't recurse another time
 103         const recurseIfNeeded = false
 104         ownerActor = await getOrCreateActorAndServerAndModel(accountAttributedTo.id, 'all', recurseIfNeeded)
 105       } catch (err) {
 106         logger.error('Cannot get or create account attributed to video channel ' + actor.url)
 107         throw new Error(err)
 108       }
 109     }
 110
 111     actor = await retryTransactionWrapper(saveActorAndServerAndModelIfNotExist, result, ownerActor)
 112     created = true
 113     accountPlaylistsUrl = result.playlists
 114   }
 115
 116   if (actor.Account) (actor as MActorAccountChannelIdActor).Account.Actor = actor
 117   if (actor.VideoChannel) (actor as MActorAccountChannelIdActor).VideoChannel.Actor = actor
 118
 119   const { actor: actorRefreshed, refreshed } = await retryTransactionWrapper(refreshActorIfNeeded, actor, fetchType)
 120   if (!actorRefreshed) throw new Error('Actor ' + actorRefreshed.url + ' does not exist anymore.')
 121
 122   if ((created === true || refreshed === true) && updateCollections === true) {
 123     const payload = { uri: actor.outboxUrl, type: 'activity' as 'activity' }
 124     await JobQueue.Instance.createJob({ type: 'activitypub-http-fetcher', payload })
 125   }
 126
 127   // We created a new account: fetch the playlists
 128   if (created === true && actor.Account && accountPlaylistsUrl) {
 129     const payload = { uri: accountPlaylistsUrl, accountId: actor.Account.id, type: 'account-playlists' as 'account-playlists' }
 130     await JobQueue.Instance.createJob({ type: 'activitypub-http-fetcher', payload })
 131   }
 132
 133   return actorRefreshed
 134 }
 135
 136 function buildActorInstance (type: ActivityPubActorType, url: string, preferredUsername: string, uuid?: string) {
 137   return new ActorModel({
 138     type,
 139     url,
 140     preferredUsername,
 141     uuid,
 142     publicKey: null,
 143     privateKey: null,
 144     followersCount: 0,
 145     followingCount: 0,
 146     inboxUrl: url + '/inbox',
 147     outboxUrl: url + '/outbox',
 148     sharedInboxUrl: WEBSERVER.URL + '/inbox',
 149     followersUrl: url + '/followers',
 150     followingUrl: url + '/following'
 151   }) as MActor
 152 }
 153
 154 async function updateActorInstance (actorInstance: ActorModel, attributes: ActivityPubActor) {
 155   const followersCount = await fetchActorTotalItems(attributes.followers)
 156   const followingCount = await fetchActorTotalItems(attributes.following)
 157
 158   actorInstance.type = attributes.type
 159   actorInstance.preferredUsername = attributes.preferredUsername
 160   actorInstance.url = attributes.id
 161   actorInstance.publicKey = attributes.publicKey.publicKeyPem
 162   actorInstance.followersCount = followersCount
 163   actorInstance.followingCount = followingCount
 164   actorInstance.inboxUrl = attributes.inbox
 165   actorInstance.outboxUrl = attributes.outbox
 166   actorInstance.followersUrl = attributes.followers
 167   actorInstance.followingUrl = attributes.following
 168
 169   if (attributes.endpoints && attributes.endpoints.sharedInbox) {
 170     actorInstance.sharedInboxUrl = attributes.endpoints.sharedInbox
 171   }
 172 }
 173
 174 type AvatarInfo = { name: string, onDisk: boolean, fileUrl: string }
 175 async function updateActorAvatarInstance (actor: MActorDefault, info: AvatarInfo, t: Transaction) {
 176   if (!info.name) return actor
 177
 178   if (actor.Avatar) {
 179     // Don't update the avatar if the filename did not change
 180     if (actor.Avatar.filename === info.name) return actor
 181
 182     try {
 183       await actor.Avatar.destroy({ transaction: t })
 184     } catch (err) {
 185       logger.error('Cannot remove old avatar of actor %s.', actor.url, { err })
 186     }
 187   }
 188
 189   const avatar = await AvatarModel.create({
 190     filename: info.name,
 191     onDisk: info.onDisk,
 192     fileUrl: info.fileUrl
 193   }, { transaction: t })
 194
 195   actor.avatarId = avatar.id
 196   actor.Avatar = avatar
 197
 198   return actor
 199 }
 200
 201 async function fetchActorTotalItems (url: string) {
 202   const options = {
 203     uri: url,
 204     method: 'GET',
 205     json: true,
 206     activityPub: true
 207   }
 208
 209   try {
 210     const { body } = await doRequest(options)
 211     return body.totalItems ? body.totalItems : 0
 212   } catch (err) {
 213     logger.warn('Cannot fetch remote actor count %s.', url, { err })
 214     return 0
 215   }
 216 }
 217
 218 async function getAvatarInfoIfExists (actorJSON: ActivityPubActor) {
 219   if (
 220     actorJSON.icon && actorJSON.icon.type === 'Image' && MIMETYPES.IMAGE.MIMETYPE_EXT[actorJSON.icon.mediaType] !== undefined &&
 221     isActivityPubUrlValid(actorJSON.icon.url)
 222   ) {
 223     const extension = MIMETYPES.IMAGE.MIMETYPE_EXT[actorJSON.icon.mediaType]
 224
 225     return {
 226       name: uuidv4() + extension,
 227       fileUrl: actorJSON.icon.url
 228     }
 229   }
 230
 231   return undefined
 232 }
 233
 234 async function addFetchOutboxJob (actor: Pick<ActorModel, 'id' | 'outboxUrl'>) {
 235   // Don't fetch ourselves
 236   const serverActor = await getServerActor()
 237   if (serverActor.id === actor.id) {
 238     logger.error('Cannot fetch our own outbox!')
 239     return undefined
 240   }
 241
 242   const payload = {
 243     uri: actor.outboxUrl,
 244     type: 'activity' as 'activity'
 245   }
 246
 247   return JobQueue.Instance.createJob({ type: 'activitypub-http-fetcher', payload })
 248 }
 249
 250 async function refreshActorIfNeeded <T extends MActorFull | MActorAccountChannelId> (
 251   actorArg: T,
 252   fetchedType: ActorFetchByUrlType
 253 ): Promise<{ actor: T | MActorFull, refreshed: boolean }> {
 254   if (!actorArg.isOutdated()) return { actor: actorArg, refreshed: false }
 255
 256   // We need more attributes
 257   const actor = fetchedType === 'all'
 258     ? actorArg as MActorFull
 259     : await ActorModel.loadByUrlAndPopulateAccountAndChannel(actorArg.url)
 260
 261   try {
 262     let actorUrl: string
 263     try {
 264       actorUrl = await getUrlFromWebfinger(actor.preferredUsername + '@' + actor.getHost())
 265     } catch (err) {
 266       logger.warn('Cannot get actor URL from webfinger, keeping the old one.', err)
 267       actorUrl = actor.url
 268     }
 269
 270     const { result, statusCode } = await fetchRemoteActor(actorUrl)
 271
 272     if (statusCode === 404) {
 273       logger.info('Deleting actor %s because there is a 404 in refresh actor.', actor.url)
 274       actor.Account ? actor.Account.destroy() : actor.VideoChannel.destroy()
 275       return { actor: undefined, refreshed: false }
 276     }
 277
 278     if (result === undefined) {
 279       logger.warn('Cannot fetch remote actor in refresh actor.')
 280       return { actor, refreshed: false }
 281     }
 282
 283     return sequelizeTypescript.transaction(async t => {
 284       updateInstanceWithAnother(actor, result.actor)
 285
 286       if (result.avatar !== undefined) {
 287         const avatarInfo = {
 288           name: result.avatar.name,
 289           fileUrl: result.avatar.fileUrl,
 290           onDisk: false
 291         }
 292
 293         await updateActorAvatarInstance(actor, avatarInfo, t)
 294       }
 295
 296       // Force update
 297       actor.setDataValue('updatedAt', new Date())
 298       await actor.save({ transaction: t })
 299
 300       if (actor.Account) {
 301         actor.Account.name = result.name
 302         actor.Account.description = result.summary
 303
 304         await actor.Account.save({ transaction: t })
 305       } else if (actor.VideoChannel) {
 306         actor.VideoChannel.name = result.name
 307         actor.VideoChannel.description = result.summary
 308         actor.VideoChannel.support = result.support
 309
 310         await actor.VideoChannel.save({ transaction: t })
 311       }
 312
 313       return { refreshed: true, actor }
 314     })
 315   } catch (err) {
 316     logger.warn('Cannot refresh actor %s.', actor.url, { err })
 317     return { actor, refreshed: false }
 318   }
 319 }
 320
 321 export {
 322   getOrCreateActorAndServerAndModel,
 323   buildActorInstance,
 324   setAsyncActorKeys,
 325   fetchActorTotalItems,
 326   getAvatarInfoIfExists,
 327   updateActorInstance,
 328   refreshActorIfNeeded,
 329   updateActorAvatarInstance,
 330   addFetchOutboxJob
 331 }
 332
 333 // ---------------------------------------------------------------------------
 334
 335 function saveActorAndServerAndModelIfNotExist (
 336   result: FetchRemoteActorResult,
 337   ownerActor?: MActorFullActor,
 338   t?: Transaction
 339 ): Bluebird<MActorFullActor> | Promise<MActorFullActor> {
 340   let actor = result.actor
 341
 342   if (t !== undefined) return save(t)
 343
 344   return sequelizeTypescript.transaction(t => save(t))
 345
 346   async function save (t: Transaction) {
 347     const actorHost = url.parse(actor.url).host
 348
 349     const serverOptions = {
 350       where: {
 351         host: actorHost
 352       },
 353       defaults: {
 354         host: actorHost
 355       },
 356       transaction: t
 357     }
 358     const [ server ] = await ServerModel.findOrCreate(serverOptions)
 359
 360     // Save our new account in database
 361     actor.serverId = server.id
 362
 363     // Avatar?
 364     if (result.avatar) {
 365       const avatar = await AvatarModel.create({
 366         filename: result.avatar.name,
 367         fileUrl: result.avatar.fileUrl,
 368         onDisk: false
 369       }, { transaction: t })
 370
 371       actor.avatarId = avatar.id
 372     }
 373
 374     // Force the actor creation, sometimes Sequelize skips the save() when it thinks the instance already exists
 375     // (which could be false in a retried query)
 376     const [ actorCreated ] = await ActorModel.findOrCreate<MActorFullActor>({
 377       defaults: actor.toJSON(),
 378       where: {
 379         url: actor.url
 380       },
 381       transaction: t
 382     })
 383
 384     if (actorCreated.type === 'Person' || actorCreated.type === 'Application') {
 385       actorCreated.Account = await saveAccount(actorCreated, result, t) as MAccountDefault
 386       actorCreated.Account.Actor = actorCreated
 387     } else if (actorCreated.type === 'Group') { // Video channel
 388       const channel = await saveVideoChannel(actorCreated, result, ownerActor, t)
 389       actorCreated.VideoChannel = Object.assign(channel, { Actor: actorCreated, Account: ownerActor.Account })
 390     }
 391
 392     actorCreated.Server = server
 393
 394     return actorCreated
 395   }
 396 }
 397
 398 type FetchRemoteActorResult = {
 399   actor: MActor
 400   name: string
 401   summary: string
 402   support?: string
 403   playlists?: string
 404   avatar?: {
 405     name: string,
 406     fileUrl: string
 407   }
 408   attributedTo: ActivityPubAttributedTo[]
 409 }
 410 async function fetchRemoteActor (actorUrl: string): Promise<{ statusCode?: number, result: FetchRemoteActorResult }> {
 411   const options = {
 412     uri: actorUrl,
 413     method: 'GET',
 414     json: true,
 415     activityPub: true
 416   }
 417
 418   logger.info('Fetching remote actor %s.', actorUrl)
 419
 420   const requestResult = await doRequest<ActivityPubActor>(options)
 421   const actorJSON = requestResult.body
 422
 423   if (sanitizeAndCheckActorObject(actorJSON) === false) {
 424     logger.debug('Remote actor JSON is not valid.', { actorJSON })
 425     return { result: undefined, statusCode: requestResult.response.statusCode }
 426   }
 427
 428   if (checkUrlsSameHost(actorJSON.id, actorUrl) !== true) {
 429     logger.warn('Actor url %s has not the same host than its AP id %s', actorUrl, actorJSON.id)
 430     return { result: undefined, statusCode: requestResult.response.statusCode }
 431   }
 432
 433   const followersCount = await fetchActorTotalItems(actorJSON.followers)
 434   const followingCount = await fetchActorTotalItems(actorJSON.following)
 435
 436   const actor = new ActorModel({
 437     type: actorJSON.type,
 438     preferredUsername: actorJSON.preferredUsername,
 439     url: actorJSON.id,
 440     publicKey: actorJSON.publicKey.publicKeyPem,
 441     privateKey: null,
 442     followersCount: followersCount,
 443     followingCount: followingCount,
 444     inboxUrl: actorJSON.inbox,
 445     outboxUrl: actorJSON.outbox,
 446     followersUrl: actorJSON.followers,
 447     followingUrl: actorJSON.following,
 448
 449     sharedInboxUrl: actorJSON.endpoints && actorJSON.endpoints.sharedInbox
 450       ? actorJSON.endpoints.sharedInbox
 451       : null
 452   })
 453
 454   const avatarInfo = await getAvatarInfoIfExists(actorJSON)
 455
 456   const name = actorJSON.name || actorJSON.preferredUsername
 457   return {
 458     statusCode: requestResult.response.statusCode,
 459     result: {
 460       actor,
 461       name,
 462       avatar: avatarInfo,
 463       summary: actorJSON.summary,
 464       support: actorJSON.support,
 465       playlists: actorJSON.playlists,
 466       attributedTo: actorJSON.attributedTo
 467     }
 468   }
 469 }
 470
 471 async function saveAccount (actor: MActorId, result: FetchRemoteActorResult, t: Transaction) {
 472   const [ accountCreated ] = await AccountModel.findOrCreate({
 473     defaults: {
 474       name: result.name,
 475       description: result.summary,
 476       actorId: actor.id
 477     },
 478     where: {
 479       actorId: actor.id
 480     },
 481     transaction: t
 482   })
 483
 484   return accountCreated as MAccount
 485 }
 486
 487 async function saveVideoChannel (actor: MActorId, result: FetchRemoteActorResult, ownerActor: MActorAccountId, t: Transaction) {
 488   const [ videoChannelCreated ] = await VideoChannelModel.findOrCreate({
 489     defaults: {
 490       name: result.name,
 491       description: result.summary,
 492       support: result.support,
 493       actorId: actor.id,
 494       accountId: ownerActor.Account.id
 495     },
 496     where: {
 497       actorId: actor.id
 498     },
 499     transaction: t
 500   })
 501
 502   return videoChannelCreated as MChannel
 503 }