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