server/lib/activitypub/process/process-undo.ts

   1 import { VideoModel } from '@server/models/video/video'
   2 import { ActivityAnnounce, ActivityFollow, ActivityLike, ActivityUndo, CacheFileObject } from '../../../../shared/models/activitypub'
   3 import { DislikeObject } from '../../../../shared/models/activitypub/objects'
   4 import { retryTransactionWrapper } from '../../../helpers/database-utils'
   5 import { logger } from '../../../helpers/logger'
   6 import { sequelizeTypescript } from '../../../initializers/database'
   7 import { AccountVideoRateModel } from '../../../models/account/account-video-rate'
   8 import { ActorModel } from '../../../models/actor/actor'
   9 import { ActorFollowModel } from '../../../models/actor/actor-follow'
  10 import { VideoRedundancyModel } from '../../../models/redundancy/video-redundancy'
  11 import { VideoShareModel } from '../../../models/video/video-share'
  12 import { APProcessorOptions } from '../../../types/activitypub-processor.model'
  13 import { MActorSignature } from '../../../types/models'
  14 import { forwardVideoRelatedActivity } from '../send/shared/send-utils'
  15 import { federateVideoIfNeeded, getOrCreateAPVideo } from '../videos'
  16
  17 async function processUndoActivity (options: APProcessorOptions<ActivityUndo>) {
  18   const { activity, byActor } = options
  19   const activityToUndo = activity.object
  20
  21   if (activityToUndo.type === 'Like') {
  22     return retryTransactionWrapper(processUndoLike, byActor, activity)
  23   }
  24
  25   if (activityToUndo.type === 'Create') {
  26     if (activityToUndo.object.type === 'CacheFile') {
  27       return retryTransactionWrapper(processUndoCacheFile, byActor, activity)
  28     }
  29   }
  30
  31   if (activityToUndo.type === 'Dislike') {
  32     return retryTransactionWrapper(processUndoDislike, byActor, activity)
  33   }
  34
  35   if (activityToUndo.type === 'Follow') {
  36     return retryTransactionWrapper(processUndoFollow, byActor, activityToUndo)
  37   }
  38
  39   if (activityToUndo.type === 'Announce') {
  40     return retryTransactionWrapper(processUndoAnnounce, byActor, activityToUndo)
  41   }
  42
  43   logger.warn('Unknown activity object type %s -> %s when undo activity.', activityToUndo.type, { activity: activity.id })
  44
  45   return undefined
  46 }
  47
  48 // ---------------------------------------------------------------------------
  49
  50 export {
  51   processUndoActivity
  52 }
  53
  54 // ---------------------------------------------------------------------------
  55
  56 async function processUndoLike (byActor: MActorSignature, activity: ActivityUndo) {
  57   const likeActivity = activity.object as ActivityLike
  58
  59   const { video: onlyVideo } = await getOrCreateAPVideo({ videoObject: likeActivity.object })
  60   // We don't care about likes of remote videos
  61   if (!onlyVideo.isOwned()) return
  62
  63   return sequelizeTypescript.transaction(async t => {
  64     if (!byActor.Account) throw new Error('Unknown account ' + byActor.url)
  65
  66     const video = await VideoModel.loadFull(onlyVideo.id, t)
  67     const rate = await AccountVideoRateModel.loadByAccountAndVideoOrUrl(byActor.Account.id, video.id, likeActivity.id, t)
  68     if (!rate || rate.type !== 'like') {
  69       logger.warn('Unknown like by account %d for video %d.', byActor.Account.id, video.id)
  70       return
  71     }
  72
  73     await rate.destroy({ transaction: t })
  74     await video.decrement('likes', { transaction: t })
  75
  76     video.likes--
  77     await federateVideoIfNeeded(video, false, t)
  78   })
  79 }
  80
  81 async function processUndoDislike (byActor: MActorSignature, activity: ActivityUndo) {
  82   const dislike = activity.object.type === 'Dislike'
  83     ? activity.object
  84     : activity.object.object as DislikeObject
  85
  86   const { video: onlyVideo } = await getOrCreateAPVideo({ videoObject: dislike.object })
  87   // We don't care about likes of remote videos
  88   if (!onlyVideo.isOwned()) return
  89
  90   return sequelizeTypescript.transaction(async t => {
  91     if (!byActor.Account) throw new Error('Unknown account ' + byActor.url)
  92
  93     const video = await VideoModel.loadFull(onlyVideo.id, t)
  94     const rate = await AccountVideoRateModel.loadByAccountAndVideoOrUrl(byActor.Account.id, video.id, dislike.id, t)
  95     if (!rate || rate.type !== 'dislike') {
  96       logger.warn(`Unknown dislike by account %d for video %d.`, byActor.Account.id, video.id)
  97       return
  98     }
  99
 100     await rate.destroy({ transaction: t })
 101     await video.decrement('dislikes', { transaction: t })
 102     video.dislikes--
 103
 104     await federateVideoIfNeeded(video, false, t)
 105   })
 106 }
 107
 108 // ---------------------------------------------------------------------------
 109
 110 async function processUndoCacheFile (byActor: MActorSignature, activity: ActivityUndo) {
 111   const cacheFileObject = activity.object.object as CacheFileObject
 112
 113   const { video } = await getOrCreateAPVideo({ videoObject: cacheFileObject.object })
 114
 115   return sequelizeTypescript.transaction(async t => {
 116     const cacheFile = await VideoRedundancyModel.loadByUrl(cacheFileObject.id, t)
 117     if (!cacheFile) {
 118       logger.debug('Cannot undo unknown video cache %s.', cacheFileObject.id)
 119       return
 120     }
 121
 122     if (cacheFile.actorId !== byActor.id) throw new Error('Cannot delete redundancy ' + cacheFile.url + ' of another actor.')
 123
 124     await cacheFile.destroy({ transaction: t })
 125
 126     if (video.isOwned()) {
 127       // Don't resend the activity to the sender
 128       const exceptions = [ byActor ]
 129
 130       await forwardVideoRelatedActivity(activity, t, exceptions, video)
 131     }
 132   })
 133 }
 134
 135 function processUndoAnnounce (byActor: MActorSignature, announceActivity: ActivityAnnounce) {
 136   return sequelizeTypescript.transaction(async t => {
 137     const share = await VideoShareModel.loadByUrl(announceActivity.id, t)
 138     if (!share) {
 139       logger.warn('Unknown video share %d', announceActivity.id)
 140       return
 141     }
 142
 143     if (share.actorId !== byActor.id) throw new Error(`${share.url} is not shared by ${byActor.url}.`)
 144
 145     await share.destroy({ transaction: t })
 146
 147     if (share.Video.isOwned()) {
 148       // Don't resend the activity to the sender
 149       const exceptions = [ byActor ]
 150
 151       await forwardVideoRelatedActivity(announceActivity, t, exceptions, share.Video)
 152     }
 153   })
 154 }
 155
 156 // ---------------------------------------------------------------------------
 157
 158 function processUndoFollow (follower: MActorSignature, followActivity: ActivityFollow) {
 159   return sequelizeTypescript.transaction(async t => {
 160     const following = await ActorModel.loadByUrlAndPopulateAccountAndChannel(followActivity.object, t)
 161     const actorFollow = await ActorFollowModel.loadByActorAndTarget(follower.id, following.id, t)
 162
 163     if (!actorFollow) {
 164       logger.warn('Unknown actor follow %d -> %d.', follower.id, following.id)
 165       return
 166     }
 167
 168     await actorFollow.destroy({ transaction: t })
 169
 170     return undefined
 171   })
 172 }