server/lib/activitypub/send/utils.ts

   1 import { Transaction } from 'sequelize'
   2 import { Activity } from '../../../../shared/models/activitypub'
   3 import { logger } from '../../../helpers/logger'
   4 import { ActorModel } from '../../../models/activitypub/actor'
   5 import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
   6 import { JobQueue } from '../../job-queue'
   7 import { VideoModel } from '../../../models/video/video'
   8 import { getActorsInvolvedInVideo } from '../audience'
   9 import { getServerActor } from '../../../helpers/utils'
  10
  11 async function forwardVideoRelatedActivity (
  12   activity: Activity,
  13   t: Transaction,
  14   followersException: ActorModel[] = [],
  15   video: VideoModel
  16 ) {
  17   // Mastodon does not add our announces in audience, so we forward to them manually
  18   const additionalActors = await getActorsInvolvedInVideo(video, t)
  19   const additionalFollowerUrls = additionalActors.map(a => a.followersUrl)
  20
  21   return forwardActivity(activity, t, followersException, additionalFollowerUrls)
  22 }
  23
  24 async function forwardActivity (
  25   activity: Activity,
  26   t: Transaction,
  27   followersException: ActorModel[] = [],
  28   additionalFollowerUrls: string[] = []
  29 ) {
  30   logger.info('Forwarding activity %s.', activity.id)
  31
  32   const to = activity.to || []
  33   const cc = activity.cc || []
  34
  35   const followersUrls = additionalFollowerUrls
  36   for (const dest of to.concat(cc)) {
  37     if (dest.endsWith('/followers')) {
  38       followersUrls.push(dest)
  39     }
  40   }
  41
  42   const toActorFollowers = await ActorModel.listByFollowersUrls(followersUrls, t)
  43   const uris = await computeFollowerUris(toActorFollowers, followersException, t)
  44
  45   if (uris.length === 0) {
  46     logger.info('0 followers for %s, no forwarding.', toActorFollowers.map(a => a.id).join(', '))
  47     return undefined
  48   }
  49
  50   logger.debug('Creating forwarding job.', { uris })
  51
  52   const payload = {
  53     uris,
  54     body: activity
  55   }
  56   return JobQueue.Instance.createJob({ type: 'activitypub-http-broadcast', payload })
  57 }
  58
  59 async function broadcastToFollowers (
  60   data: any,
  61   byActor: ActorModel,
  62   toActorFollowers: ActorModel[],
  63   t: Transaction,
  64   actorsException: ActorModel[] = []
  65 ) {
  66   const uris = await computeFollowerUris(toActorFollowers, actorsException, t)
  67   return broadcastTo(uris, data, byActor)
  68 }
  69
  70 async function broadcastToActors (
  71   data: any,
  72   byActor: ActorModel,
  73   toActors: ActorModel[],
  74   actorsException: ActorModel[] = []
  75 ) {
  76   const uris = await computeUris(toActors, actorsException)
  77   return broadcastTo(uris, data, byActor)
  78 }
  79
  80 async function broadcastTo (uris: string[], data: any, byActor: ActorModel) {
  81   if (uris.length === 0) return undefined
  82
  83   logger.debug('Creating broadcast job.', { uris })
  84
  85   const payload = {
  86     uris,
  87     signatureActorId: byActor.id,
  88     body: data
  89   }
  90
  91   return JobQueue.Instance.createJob({ type: 'activitypub-http-broadcast', payload })
  92 }
  93
  94 async function unicastTo (data: any, byActor: ActorModel, toActorUrl: string) {
  95   logger.debug('Creating unicast job.', { uri: toActorUrl })
  96
  97   const payload = {
  98     uri: toActorUrl,
  99     signatureActorId: byActor.id,
 100     body: data
 101   }
 102
 103   return JobQueue.Instance.createJob({ type: 'activitypub-http-unicast', payload })
 104 }
 105
 106 // ---------------------------------------------------------------------------
 107
 108 export {
 109   broadcastToFollowers,
 110   unicastTo,
 111   forwardActivity,
 112   broadcastToActors,
 113   forwardVideoRelatedActivity
 114 }
 115
 116 // ---------------------------------------------------------------------------
 117
 118 async function computeFollowerUris (toActorFollower: ActorModel[], actorsException: ActorModel[], t: Transaction) {
 119   const toActorFollowerIds = toActorFollower.map(a => a.id)
 120
 121   const result = await ActorFollowModel.listAcceptedFollowerSharedInboxUrls(toActorFollowerIds, t)
 122   const sharedInboxesException = await buildSharedInboxesException(actorsException)
 123
 124   return result.data.filter(sharedInbox => sharedInboxesException.indexOf(sharedInbox) === -1)
 125 }
 126
 127 async function computeUris (toActors: ActorModel[], actorsException: ActorModel[] = []) {
 128   const serverActor = await getServerActor()
 129   const targetUrls = toActors
 130     .filter(a => a.id !== serverActor.id) // Don't send to ourselves
 131     .map(a => a.sharedInboxUrl || a.inboxUrl)
 132
 133   const toActorSharedInboxesSet = new Set(targetUrls)
 134
 135   const sharedInboxesException = await buildSharedInboxesException(actorsException)
 136   return Array.from(toActorSharedInboxesSet)
 137               .filter(sharedInbox => sharedInboxesException.indexOf(sharedInbox) === -1)
 138 }
 139
 140 async function buildSharedInboxesException (actorsException: ActorModel[]) {
 141   const serverActor = await getServerActor()
 142
 143   return actorsException
 144     .map(f => f.sharedInboxUrl || f.inboxUrl)
 145     .concat([ serverActor.sharedInboxUrl ])
 146 }