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