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