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

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