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

   1 import * as Bull from 'bull'
   2 import { logger } from '../../../helpers/logger'
   3 import { REMOTE_SCHEME, WEBSERVER } from '../../../initializers/constants'
   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 import { sequelizeTypescript } from '../../../initializers/database'
  13 import { MActor, MActorFollowActors, MActorFull } from '../../../typings/models'
  14 import { ActivitypubFollowPayload } from '@shared/models'
  15
  16 async function processActivityPubFollow (job: Bull.Job) {
  17   const payload = job.data as ActivitypubFollowPayload
  18   const host = payload.host
  19
  20   logger.info('Processing ActivityPub follow in job %d.', job.id)
  21
  22   let targetActor: MActorFull
  23   if (!host || host === WEBSERVER.HOST) {
  24     targetActor = await ActorModel.loadLocalByName(payload.name)
  25   } else {
  26     const sanitizedHost = sanitizeHost(host, REMOTE_SCHEME.HTTP)
  27     const actorUrl = await loadActorUrlOrGetFromWebfinger(payload.name + '@' + sanitizedHost)
  28     targetActor = await getOrCreateActorAndServerAndModel(actorUrl, 'all')
  29   }
  30
  31   if (payload.assertIsChannel && !targetActor.VideoChannel) {
  32     logger.warn('Do not follow %s@%s because it is not a channel.', payload.name, host)
  33     return
  34   }
  35
  36   const fromActor = await ActorModel.load(payload.followerActorId)
  37
  38   return retryTransactionWrapper(follow, fromActor, targetActor, payload.isAutoFollow)
  39 }
  40 // ---------------------------------------------------------------------------
  41
  42 export {
  43   processActivityPubFollow
  44 }
  45
  46 // ---------------------------------------------------------------------------
  47
  48 async function follow (fromActor: MActor, targetActor: MActorFull, isAutoFollow = false) {
  49   if (fromActor.id === targetActor.id) {
  50     throw new Error('Follower is the same as target actor.')
  51   }
  52
  53   // Same server, direct accept
  54   const state = !fromActor.serverId && !targetActor.serverId ? 'accepted' : 'pending'
  55
  56   const actorFollow = await sequelizeTypescript.transaction(async t => {
  57     const [ actorFollow ] = await ActorFollowModel.findOrCreate<MActorFollowActors>({
  58       where: {
  59         actorId: fromActor.id,
  60         targetActorId: targetActor.id
  61       },
  62       defaults: {
  63         state,
  64         actorId: fromActor.id,
  65         targetActorId: targetActor.id
  66       },
  67       transaction: t
  68     })
  69     actorFollow.ActorFollowing = targetActor
  70     actorFollow.ActorFollower = fromActor
  71
  72     // Send a notification to remote server if our follow is not already accepted
  73     if (actorFollow.state !== 'accepted') sendFollow(actorFollow, t)
  74
  75     return actorFollow
  76   })
  77
  78   const followerFull = await ActorModel.loadFull(fromActor.id)
  79
  80   const actorFollowFull = Object.assign(actorFollow, {
  81     ActorFollowing: targetActor,
  82     ActorFollower: followerFull
  83   })
  84
  85   if (actorFollow.state === 'accepted') Notifier.Instance.notifyOfNewUserFollow(actorFollowFull)
  86   if (isAutoFollow === true) Notifier.Instance.notifyOfAutoInstanceFollowing(actorFollowFull)
  87
  88   return actorFollow
  89 }