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 import { APProcessorOptions } from '../../../typings/activitypub-processor.model'
  13 import { MAccount, MActorFollowActors, MActorFollowFull, MActorSignature } from '../../../typings/models'
  14
  15 async function processFollowActivity (options: APProcessorOptions<ActivityFollow>) {
  16   const { activity, byActor } = options
  17   const activityObject = getAPId(activity.object)
  18
  19   return retryTransactionWrapper(processFollow, byActor, activityObject)
  20 }
  21
  22 // ---------------------------------------------------------------------------
  23
  24 export {
  25   processFollowActivity
  26 }
  27
  28 // ---------------------------------------------------------------------------
  29
  30 async function processFollow (byActor: MActorSignature, targetActorURL: string) {
  31   const { actorFollow, created, isFollowingInstance } = await sequelizeTypescript.transaction(async t => {
  32     const targetActor = await ActorModel.loadByUrlAndPopulateAccountAndChannel(targetActorURL, t)
  33
  34     if (!targetActor) throw new Error('Unknown actor')
  35     if (targetActor.isOwned() === false) throw new Error('This is not a local actor.')
  36
  37     const serverActor = await getServerActor()
  38     const isFollowingInstance = targetActor.id === serverActor.id
  39
  40     if (isFollowingInstance && CONFIG.FOLLOWERS.INSTANCE.ENABLED === false) {
  41       logger.info('Rejecting %s because instance followers are disabled.', targetActor.url)
  42
  43       await sendReject(byActor, targetActor)
  44
  45       return { actorFollow: undefined as MActorFollowActors }
  46     }
  47
  48     const [ actorFollow, created ] = await ActorFollowModel.findOrCreate<MActorFollowActors>({
  49       where: {
  50         actorId: byActor.id,
  51         targetActorId: targetActor.id
  52       },
  53       defaults: {
  54         actorId: byActor.id,
  55         targetActorId: targetActor.id,
  56         state: CONFIG.FOLLOWERS.INSTANCE.MANUAL_APPROVAL ? 'pending' : 'accepted'
  57       },
  58       transaction: t
  59     })
  60
  61     if (actorFollow.state !== 'accepted' && CONFIG.FOLLOWERS.INSTANCE.MANUAL_APPROVAL === false) {
  62       actorFollow.state = 'accepted'
  63       await actorFollow.save({ transaction: t })
  64     }
  65
  66     actorFollow.ActorFollower = byActor
  67     actorFollow.ActorFollowing = targetActor
  68
  69     // Target sends to actor he accepted the follow request
  70     if (actorFollow.state === 'accepted') await sendAccept(actorFollow)
  71
  72     return { actorFollow, created, isFollowingInstance }
  73   })
  74
  75   // Rejected
  76   if (!actorFollow) return
  77
  78   if (created) {
  79     if (isFollowingInstance) {
  80       Notifier.Instance.notifyOfNewInstanceFollow(actorFollow)
  81     } else {
  82       const actorFollowFull = actorFollow as MActorFollowFull
  83       actorFollowFull.ActorFollower.Account = await actorFollow.ActorFollower.$get('Account') as MAccount
  84
  85       Notifier.Instance.notifyOfNewUserFollow(actorFollowFull)
  86     }
  87   }
  88
  89   logger.info('Actor %s is followed by actor %s.', targetActorURL, byActor.url)
  90 }