server/lib/activitypub/send/misc.ts

   1 import { Transaction } from 'sequelize'
   2 import { Activity } from '../../../../shared/models/activitypub'
   3 import { logger } from '../../../helpers'
   4 import { ACTIVITY_PUB } from '../../../initializers'
   5 import { ActorModel } from '../../../models/activitypub/actor'
   6 import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
   7 import { VideoModel } from '../../../models/video/video'
   8 import { VideoShareModel } from '../../../models/video/video-share'
   9 import { activitypubHttpJobScheduler, ActivityPubHttpPayload } from '../../jobs/activitypub-http-job-scheduler'
  10
  11 async function forwardActivity (
  12   activity: Activity,
  13   t: Transaction,
  14   followersException: ActorModel[] = []
  15 ) {
  16   const to = activity.to || []
  17   const cc = activity.cc || []
  18
  19   const followersUrls: string[] = []
  20   for (const dest of to.concat(cc)) {
  21     if (dest.endsWith('/followers')) {
  22       followersUrls.push(dest)
  23     }
  24   }
  25
  26   const toActorFollowers = await ActorModel.listByFollowersUrls(followersUrls, t)
  27   const uris = await computeFollowerUris(toActorFollowers, followersException, t)
  28
  29   if (uris.length === 0) {
  30     logger.info('0 followers for %s, no forwarding.', toActorFollowers.map(a => a.id).join(', '))
  31     return undefined
  32   }
  33
  34   logger.debug('Creating forwarding job.', { uris })
  35
  36   const jobPayload: ActivityPubHttpPayload = {
  37     uris,
  38     body: activity
  39   }
  40
  41   return activitypubHttpJobScheduler.createJob(t, 'activitypubHttpBroadcastHandler', jobPayload)
  42 }
  43
  44 async function broadcastToFollowers (
  45   data: any,
  46   byActor: ActorModel,
  47   toActorFollowers: ActorModel[],
  48   t: Transaction,
  49   followersException: ActorModel[] = []
  50 ) {
  51   const uris = await computeFollowerUris(toActorFollowers, followersException, t)
  52   if (uris.length === 0) {
  53     logger.info('0 followers for %s, no broadcasting.', toActorFollowers.map(a => a.id).join(', '))
  54     return undefined
  55   }
  56
  57   logger.debug('Creating broadcast job.', { uris })
  58
  59   const jobPayload: ActivityPubHttpPayload = {
  60     uris,
  61     signatureActorId: byActor.id,
  62     body: data
  63   }
  64
  65   return activitypubHttpJobScheduler.createJob(t, 'activitypubHttpBroadcastHandler', jobPayload)
  66 }
  67
  68 async function unicastTo (data: any, byActor: ActorModel, toActorUrl: string, t: Transaction) {
  69   logger.debug('Creating unicast job.', { uri: toActorUrl })
  70
  71   const jobPayload: ActivityPubHttpPayload = {
  72     uris: [ toActorUrl ],
  73     signatureActorId: byActor.id,
  74     body: data
  75   }
  76
  77   return activitypubHttpJobScheduler.createJob(t, 'activitypubHttpUnicastHandler', jobPayload)
  78 }
  79
  80 function getOriginVideoAudience (video: VideoModel, actorsInvolvedInVideo: ActorModel[]) {
  81   return {
  82     to: [ video.VideoChannel.Account.Actor.url ],
  83     cc: actorsInvolvedInVideo.map(a => a.followersUrl)
  84   }
  85 }
  86
  87 function getObjectFollowersAudience (actorsInvolvedInObject: ActorModel[]) {
  88   return {
  89     to: actorsInvolvedInObject.map(a => a.followersUrl),
  90     cc: []
  91   }
  92 }
  93
  94 async function getActorsInvolvedInVideo (video: VideoModel, t: Transaction) {
  95   const actorsToForwardView = await VideoShareModel.loadActorsByShare(video.id, t)
  96   actorsToForwardView.push(video.VideoChannel.Account.Actor)
  97
  98   return actorsToForwardView
  99 }
 100
 101 async function getAudience (actorSender: ActorModel, t: Transaction, isPublic = true) {
 102   const followerInboxUrls = await actorSender.getFollowerSharedInboxUrls(t)
 103
 104   // Thanks Mastodon: https://github.com/tootsuite/mastodon/blob/master/app/lib/activitypub/tag_manager.rb#L47
 105   let to = []
 106   let cc = []
 107
 108   if (isPublic) {
 109     to = [ ACTIVITY_PUB.PUBLIC ]
 110     cc = followerInboxUrls
 111   } else { // Unlisted
 112     to = followerInboxUrls
 113     cc = [ ACTIVITY_PUB.PUBLIC ]
 114   }
 115
 116   return { to, cc }
 117 }
 118
 119 async function computeFollowerUris (toActorFollower: ActorModel[], followersException: ActorModel[], t: Transaction) {
 120   const toActorFollowerIds = toActorFollower.map(a => a.id)
 121
 122   const result = await ActorFollowModel.listAcceptedFollowerSharedInboxUrls(toActorFollowerIds, t)
 123   const followersSharedInboxException = followersException.map(f => f.sharedInboxUrl)
 124   return result.data.filter(sharedInbox => followersSharedInboxException.indexOf(sharedInbox) === -1)
 125 }
 126
 127 // ---------------------------------------------------------------------------
 128
 129 export {
 130   broadcastToFollowers,
 131   unicastTo,
 132   getAudience,
 133   getOriginVideoAudience,
 134   getActorsInvolvedInVideo,
 135   getObjectFollowersAudience,
 136   forwardActivity
 137 }