server/lib/activitypub/send/misc.ts

   1 import { Transaction } from 'sequelize'
   2 import { Activity, ActivityAudience } from '../../../../shared/models/activitypub'
   3 import { logger } from '../../../helpers/logger'
   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 { VideoCommentModel } from '../../../models/video/video-comment'
   9 import { VideoShareModel } from '../../../models/video/video-share'
  10 import { activitypubHttpJobScheduler, ActivityPubHttpPayload } from '../../jobs/activitypub-http-job-scheduler'
  11
  12 async function forwardActivity (
  13   activity: Activity,
  14   t: Transaction,
  15   followersException: ActorModel[] = [],
  16   additionalFollowerUrls: string[] = []
  17 ) {
  18   const to = activity.to || []
  19   const cc = activity.cc || []
  20
  21   const followersUrls = additionalFollowerUrls
  22   for (const dest of to.concat(cc)) {
  23     if (dest.endsWith('/followers')) {
  24       followersUrls.push(dest)
  25     }
  26   }
  27
  28   const toActorFollowers = await ActorModel.listByFollowersUrls(followersUrls, t)
  29   const uris = await computeFollowerUris(toActorFollowers, followersException, t)
  30
  31   if (uris.length === 0) {
  32     logger.info('0 followers for %s, no forwarding.', toActorFollowers.map(a => a.id).join(', '))
  33     return undefined
  34   }
  35
  36   logger.debug('Creating forwarding job.', { uris })
  37
  38   const jobPayload: ActivityPubHttpPayload = {
  39     uris,
  40     body: activity
  41   }
  42
  43   return activitypubHttpJobScheduler.createJob(t, 'activitypubHttpBroadcastHandler', jobPayload)
  44 }
  45
  46 async function broadcastToFollowers (
  47   data: any,
  48   byActor: ActorModel,
  49   toActorFollowers: ActorModel[],
  50   t: Transaction,
  51   actorsException: ActorModel[] = []
  52 ) {
  53   const uris = await computeFollowerUris(toActorFollowers, actorsException, t)
  54   return broadcastTo(uris, data, byActor, t)
  55 }
  56
  57 async function broadcastToActors (
  58   data: any,
  59   byActor: ActorModel,
  60   toActors: ActorModel[],
  61   t: Transaction,
  62   actorsException: ActorModel[] = []
  63 ) {
  64   const uris = await computeUris(toActors, actorsException)
  65   return broadcastTo(uris, data, byActor, t)
  66 }
  67
  68 async function broadcastTo (uris: string[], data: any, byActor: ActorModel, t: Transaction) {
  69   if (uris.length === 0) return undefined
  70
  71   logger.debug('Creating broadcast job.', { uris })
  72
  73   const jobPayload: ActivityPubHttpPayload = {
  74     uris,
  75     signatureActorId: byActor.id,
  76     body: data
  77   }
  78
  79   return activitypubHttpJobScheduler.createJob(t, 'activitypubHttpBroadcastHandler', jobPayload)
  80 }
  81
  82 async function unicastTo (data: any, byActor: ActorModel, toActorUrl: string, t: Transaction) {
  83   logger.debug('Creating unicast job.', { uri: toActorUrl })
  84
  85   const jobPayload: ActivityPubHttpPayload = {
  86     uris: [ toActorUrl ],
  87     signatureActorId: byActor.id,
  88     body: data
  89   }
  90
  91   return activitypubHttpJobScheduler.createJob(t, 'activitypubHttpUnicastHandler', jobPayload)
  92 }
  93
  94 function getOriginVideoAudience (video: VideoModel, actorsInvolvedInVideo: ActorModel[]) {
  95   return {
  96     to: [ video.VideoChannel.Account.Actor.url ],
  97     cc: actorsInvolvedInVideo.map(a => a.followersUrl)
  98   }
  99 }
 100
 101 function getOriginVideoCommentAudience (
 102   videoComment: VideoCommentModel,
 103   threadParentComments: VideoCommentModel[],
 104   actorsInvolvedInVideo: ActorModel[],
 105   isOrigin = false
 106 ) {
 107   const to = [ ACTIVITY_PUB.PUBLIC ]
 108   const cc = [ ]
 109
 110   // Owner of the video we comment
 111   if (isOrigin === false) {
 112     cc.push(videoComment.Video.VideoChannel.Account.Actor.url)
 113   }
 114
 115   // Followers of the poster
 116   cc.push(videoComment.Account.Actor.followersUrl)
 117
 118   // Send to actors we reply to
 119   for (const parentComment of threadParentComments) {
 120     cc.push(parentComment.Account.Actor.url)
 121   }
 122
 123   return {
 124     to,
 125     cc: cc.concat(actorsInvolvedInVideo.map(a => a.followersUrl))
 126   }
 127 }
 128
 129 function getObjectFollowersAudience (actorsInvolvedInObject: ActorModel[]) {
 130   return {
 131     to: actorsInvolvedInObject.map(a => a.followersUrl),
 132     cc: []
 133   }
 134 }
 135
 136 async function getActorsInvolvedInVideo (video: VideoModel, t: Transaction) {
 137   const actors = await VideoShareModel.loadActorsByShare(video.id, t)
 138   actors.push(video.VideoChannel.Account.Actor)
 139
 140   return actors
 141 }
 142
 143 async function getAudience (actorSender: ActorModel, t: Transaction, isPublic = true) {
 144   const followerInboxUrls = await actorSender.getFollowerSharedInboxUrls(t)
 145
 146   return buildAudience(followerInboxUrls, isPublic)
 147 }
 148
 149 function buildAudience (followerInboxUrls: string[], isPublic = true) {
 150   // Thanks Mastodon: https://github.com/tootsuite/mastodon/blob/master/app/lib/activitypub/tag_manager.rb#L47
 151   let to = []
 152   let cc = []
 153
 154   if (isPublic) {
 155     to = [ ACTIVITY_PUB.PUBLIC ]
 156     cc = followerInboxUrls
 157   } else { // Unlisted
 158     to = followerInboxUrls
 159     cc = [ ACTIVITY_PUB.PUBLIC ]
 160   }
 161
 162   return { to, cc }
 163 }
 164
 165 function audiencify (object: any, audience: ActivityAudience) {
 166   return Object.assign(object, audience)
 167 }
 168
 169 async function computeFollowerUris (toActorFollower: ActorModel[], actorsException: ActorModel[], t: Transaction) {
 170   const toActorFollowerIds = toActorFollower.map(a => a.id)
 171
 172   const result = await ActorFollowModel.listAcceptedFollowerSharedInboxUrls(toActorFollowerIds, t)
 173   const sharedInboxesException = actorsException.map(f => f.sharedInboxUrl || f.inboxUrl)
 174   return result.data.filter(sharedInbox => sharedInboxesException.indexOf(sharedInbox) === -1)
 175 }
 176
 177 async function computeUris (toActors: ActorModel[], actorsException: ActorModel[] = []) {
 178   const toActorSharedInboxesSet = new Set(toActors.map(a => a.sharedInboxUrl || a.inboxUrl))
 179
 180   const sharedInboxesException = actorsException.map(f => f.sharedInboxUrl || f.inboxUrl)
 181   return Array.from(toActorSharedInboxesSet)
 182     .filter(sharedInbox => sharedInboxesException.indexOf(sharedInbox) === -1)
 183 }
 184
 185 // ---------------------------------------------------------------------------
 186
 187 export {
 188   broadcastToFollowers,
 189   unicastTo,
 190   buildAudience,
 191   getAudience,
 192   getOriginVideoAudience,
 193   getActorsInvolvedInVideo,
 194   getObjectFollowersAudience,
 195   forwardActivity,
 196   audiencify,
 197   getOriginVideoCommentAudience,
 198   computeUris,
 199   broadcastToActors
 200 }