server/lib/activitypub/process/process-follow.ts

   1 import { ActivityFollow } from '../../../../shared/models/activitypub'
   2 import { retryTransactionWrapper } from '../../../helpers/database-utils'
   3 import { logger } from '../../../helpers/logger'
   4 import { sequelizeTypescript } from '../../../initializers'
   5 import { ActorModel } from '../../../models/activitypub/actor'
   6 import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
   7 import { sendAccept, sendReject } from '../send'
   8 import { Notifier } from '../../notifier'
   9 import { getAPId } from '../../../helpers/activitypub'
  10 import { getServerActor } from '../../../helpers/utils'
  11 import { CONFIG } from '../../../initializers/config'
  12
  13 async function processFollowActivity (activity: ActivityFollow, byActor: ActorModel) {
  14   const activityObject = getAPId(activity.object)
  15
  16   return retryTransactionWrapper(processFollow, byActor, activityObject)
  17 }
  18
  19 // ---------------------------------------------------------------------------
  20
  21 export {
  22   processFollowActivity
  23 }
  24
  25 // ---------------------------------------------------------------------------
  26
  27 async function processFollow (actor: ActorModel, targetActorURL: string) {
  28   const { actorFollow, created, isFollowingInstance } = await sequelizeTypescript.transaction(async t => {
  29     const targetActor = await ActorModel.loadByUrlAndPopulateAccountAndChannel(targetActorURL, t)
  30
  31     if (!targetActor) throw new Error('Unknown actor')
  32     if (targetActor.isOwned() === false) throw new Error('This is not a local actor.')
  33
  34     const serverActor = await getServerActor()
  35     const isFollowingInstance = targetActor.id === serverActor.id
  36
  37     if (isFollowingInstance && CONFIG.FOLLOWERS.INSTANCE.ENABLED === false) {
  38       logger.info('Rejecting %s because instance followers are disabled.', targetActor.url)
  39
  40       await sendReject(actor, targetActor)
  41
  42       return { actorFollow: undefined }
  43     }
  44
  45     const [ actorFollow, created ] = await ActorFollowModel.findOrCreate({
  46       where: {
  47         actorId: actor.id,
  48         targetActorId: targetActor.id
  49       },
  50       defaults: {
  51         actorId: actor.id,
  52         targetActorId: targetActor.id,
  53         state: CONFIG.FOLLOWERS.INSTANCE.MANUAL_APPROVAL ? 'pending' : 'accepted'
  54       },
  55       transaction: t
  56     })
  57
  58     if (actorFollow.state !== 'accepted' && CONFIG.FOLLOWERS.INSTANCE.MANUAL_APPROVAL === false) {
  59       actorFollow.state = 'accepted'
  60       await actorFollow.save({ transaction: t })
  61     }
  62
  63     actorFollow.ActorFollower = actor
  64     actorFollow.ActorFollowing = targetActor
  65
  66     // Target sends to actor he accepted the follow request
  67     if (actorFollow.state === 'accepted') await sendAccept(actorFollow)
  68
  69     return { actorFollow, created, isFollowingInstance }
  70   })
  71
  72   // Rejected
  73   if (!actorFollow) return
  74
  75   if (created) {
  76     if (isFollowingInstance) Notifier.Instance.notifyOfNewInstanceFollow(actorFollow)
  77     else Notifier.Instance.notifyOfNewUserFollow(actorFollow)
  78   }
  79
  80   logger.info('Actor %s is followed by actor %s.', targetActorURL, actor.url)
  81 }