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

   1 import * as Bull from 'bull'
   2 import { logger } from '../../../helpers/logger'
   3 import { getServerActor } from '../../../helpers/utils'
   4 import { REMOTE_SCHEME, sequelizeTypescript } from '../../../initializers'
   5 import { sendFollow } from '../../activitypub/send'
   6 import { sanitizeHost } from '../../../helpers/core-utils'
   7 import { loadActorUrlOrGetFromWebfinger } from '../../../helpers/webfinger'
   8 import { getOrCreateActorAndServerAndModel } from '../../activitypub/actor'
   9 import { retryTransactionWrapper } from '../../../helpers/database-utils'
  10 import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
  11 import { ActorModel } from '../../../models/activitypub/actor'
  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   const sanitizedHost = sanitizeHost(host, REMOTE_SCHEME.HTTP)
  26
  27   const actorUrl = await loadActorUrlOrGetFromWebfinger(payload.name + '@' + sanitizedHost)
  28   const targetActor = await getOrCreateActorAndServerAndModel(actorUrl)
  29
  30   const fromActor = await ActorModel.load(payload.followerActorId)
  31
  32   return retryTransactionWrapper(follow, fromActor, targetActor)
  33 }
  34 // ---------------------------------------------------------------------------
  35
  36 export {
  37   processActivityPubFollow
  38 }
  39
  40 // ---------------------------------------------------------------------------
  41
  42 function follow (fromActor: ActorModel, targetActor: ActorModel) {
  43   if (fromActor.id === targetActor.id) {
  44     throw new Error('Follower is the same than target actor.')
  45   }
  46
  47   // Same server, direct accept
  48   const state = !fromActor.serverId && !targetActor.serverId ? 'accepted' : 'pending'
  49
  50   return sequelizeTypescript.transaction(async t => {
  51     const [ actorFollow ] = await ActorFollowModel.findOrCreate({
  52       where: {
  53         actorId: fromActor.id,
  54         targetActorId: targetActor.id
  55       },
  56       defaults: {
  57         state,
  58         actorId: fromActor.id,
  59         targetActorId: targetActor.id
  60       },
  61       transaction: t
  62     })
  63     actorFollow.ActorFollowing = targetActor
  64     actorFollow.ActorFollower = fromActor
  65
  66     // Send a notification to remote server if our follow is not already accepted
  67     if (actorFollow.state !== 'accepted') await sendFollow(actorFollow)
  68   })
  69 }