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