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
  15 export type ActivitypubFollowPayload = {
  16   followerActorId: number
  17   name: string
  18   host: string
  19   isAutoFollow?: boolean
  20   assertIsChannel?: boolean
  21 }
  22
  23 async function processActivityPubFollow (job: Bull.Job) {
  24   const payload = job.data as ActivitypubFollowPayload
  25   const host = payload.host
  26
  27   logger.info('Processing ActivityPub follow in job %d.', job.id)
  28
  29   let targetActor: MActorFull
  30   if (!host || host === WEBSERVER.HOST) {
  31     targetActor = await ActorModel.loadLocalByName(payload.name)
  32   } else {
  33     const sanitizedHost = sanitizeHost(host, REMOTE_SCHEME.HTTP)
  34     const actorUrl = await loadActorUrlOrGetFromWebfinger(payload.name + '@' + sanitizedHost)
  35     targetActor = await getOrCreateActorAndServerAndModel(actorUrl, 'all')
  36   }
  37
  38   if (payload.assertIsChannel && !targetActor.VideoChannel) {
  39     logger.warn('Do not follow %s@%s because it is not a channel.', payload.name, host)
  40     return
  41   }
  42
  43   const fromActor = await ActorModel.load(payload.followerActorId)
  44
  45   return retryTransactionWrapper(follow, fromActor, targetActor, payload.isAutoFollow)
  46 }
  47 // ---------------------------------------------------------------------------
  48
  49 export {
  50   processActivityPubFollow
  51 }
  52
  53 // ---------------------------------------------------------------------------
  54
  55 async function follow (fromActor: MActor, targetActor: MActorFull, isAutoFollow = false) {
  56   if (fromActor.id === targetActor.id) {
  57     throw new Error('Follower is the same as target actor.')
  58   }
  59
  60   // Same server, direct accept
  61   const state = !fromActor.serverId && !targetActor.serverId ? 'accepted' : 'pending'
  62
  63   const actorFollow = await sequelizeTypescript.transaction(async t => {
  64     const [ actorFollow ] = await ActorFollowModel.findOrCreate<MActorFollowActors>({
  65       where: {
  66         actorId: fromActor.id,
  67         targetActorId: targetActor.id
  68       },
  69       defaults: {
  70         state,
  71         actorId: fromActor.id,
  72         targetActorId: targetActor.id
  73       },
  74       transaction: t
  75     })
  76     actorFollow.ActorFollowing = targetActor
  77     actorFollow.ActorFollower = fromActor
  78
  79     // Send a notification to remote server if our follow is not already accepted
  80     if (actorFollow.state !== 'accepted') sendFollow(actorFollow, t)
  81
  82     return actorFollow
  83   })
  84
  85   const followerFull = await ActorModel.loadFull(fromActor.id)
  86
  87   const actorFollowFull = Object.assign(actorFollow, {
  88     ActorFollowing: targetActor,
  89     ActorFollower: followerFull
  90   })
  91
  92   if (actorFollow.state === 'accepted') Notifier.Instance.notifyOfNewUserFollow(actorFollowFull)
  93   if (isAutoFollow === true) Notifier.Instance.notifyOfAutoInstanceFollowing(actorFollowFull)
  94
  95   return actorFollow
  96 }