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

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