server/lib/job-queue/handlers/activitypub-follow.ts

   1 import * as Bull from 'bull'
   2 import { logger } from '../../../helpers/logger'
   3 import { REMOTE_SCHEME, sequelizeTypescript, WEBSERVER } from '../../../initializers'
   4 import { sendFollow } from '../../activitypub/send'
   5 import { sanitizeHost } from '../../../helpers/core-utils'
   6 import { loadActorUrlOrGetFromWebfinger } from '../../../helpers/webfinger'
   7 import { getOrCreateActorAndServerAndModel } from '../../activitypub/actor'
   8 import { retryTransactionWrapper } from '../../../helpers/database-utils'
   9 import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
  10 import { ActorModel } from '../../../models/activitypub/actor'
  11 import { Notifier } from '../../notifier'
  12
  13 export type ActivitypubFollowPayload = {
  14   followerActorId: number
  15   name: string
  16   host: string
  17 }
  18
  19 async function processActivityPubFollow (job: Bull.Job) {
  20   const payload = job.data as ActivitypubFollowPayload
  21   const host = payload.host
  22
  23   logger.info('Processing ActivityPub follow in job %d.', job.id)
  24
  25   let targetActor: ActorModel
  26   if (!host || host === WEBSERVER.HOST) {
  27     targetActor = await ActorModel.loadLocalByName(payload.name)
  28   } else {
  29     const sanitizedHost = sanitizeHost(host, REMOTE_SCHEME.HTTP)
  30     const actorUrl = await loadActorUrlOrGetFromWebfinger(payload.name + '@' + sanitizedHost)
  31     targetActor = await getOrCreateActorAndServerAndModel(actorUrl)
  32   }
  33
  34   const fromActor = await ActorModel.load(payload.followerActorId)
  35
  36   return retryTransactionWrapper(follow, fromActor, targetActor)
  37 }
  38 // ---------------------------------------------------------------------------
  39
  40 export {
  41   processActivityPubFollow
  42 }
  43
  44 // ---------------------------------------------------------------------------
  45
  46 async function follow (fromActor: ActorModel, targetActor: ActorModel) {
  47   if (fromActor.id === targetActor.id) {
  48     throw new Error('Follower is the same than target actor.')
  49   }
  50
  51   // Same server, direct accept
  52   const state = !fromActor.serverId && !targetActor.serverId ? 'accepted' : 'pending'
  53
  54   const actorFollow = await sequelizeTypescript.transaction(async t => {
  55     const [ actorFollow ] = await ActorFollowModel.findOrCreate({
  56       where: {
  57         actorId: fromActor.id,
  58         targetActorId: targetActor.id
  59       },
  60       defaults: {
  61         state,
  62         actorId: fromActor.id,
  63         targetActorId: targetActor.id
  64       },
  65       transaction: t
  66     })
  67     actorFollow.ActorFollowing = targetActor
  68     actorFollow.ActorFollower = fromActor
  69
  70     // Send a notification to remote server if our follow is not already accepted
  71     if (actorFollow.state !== 'accepted') await sendFollow(actorFollow)
  72
  73     return actorFollow
  74   })
  75
  76   if (actorFollow.state === 'accepted') Notifier.Instance.notifyOfNewUserFollow(actorFollow)
  77 }