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     let rate = await AccountVideoRateModel.loadByUrl(likeActivity.id, t)
  59     if (!rate) rate = await AccountVideoRateModel.load(byActor.Account.id, video.id, t)
  60     if (!rate) throw new Error(`Unknown rate by account ${byActor.Account.id} for video ${video.id}.`)
  61
  62     await rate.destroy({ transaction: t })
  63     await video.decrement('likes', { transaction: t })
  64
  65     if (video.isOwned()) {
  66       // Don't resend the activity to the sender
  67       const exceptions = [ byActor ]
  68
  69       await forwardVideoRelatedActivity(activity, t, exceptions, video)
  70     }
  71   })
  72 }
  73
  74 async function processUndoDislike (byActor: ActorModel, activity: ActivityUndo) {
  75   const dislike = activity.object.object as DislikeObject
  76
  77   const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: dislike.object })
  78
  79   return sequelizeTypescript.transaction(async t => {
  80     if (!byActor.Account) throw new Error('Unknown account ' + byActor.url)
  81
  82     let rate = await AccountVideoRateModel.loadByUrl(dislike.id, t)
  83     if (!rate) rate = await AccountVideoRateModel.load(byActor.Account.id, video.id, t)
  84     if (!rate) throw new Error(`Unknown rate by account ${byActor.Account.id} for video ${video.id}.`)
  85
  86     await rate.destroy({ transaction: t })
  87     await video.decrement('dislikes', { transaction: t })
  88
  89     if (video.isOwned()) {
  90       // Don't resend the activity to the sender
  91       const exceptions = [ byActor ]
  92
  93       await forwardVideoRelatedActivity(activity, t, exceptions, video)
  94     }
  95   })
  96 }
  97
  98 async function processUndoCacheFile (byActor: ActorModel, activity: ActivityUndo) {
  99   const cacheFileObject = activity.object.object as CacheFileObject
 100
 101   const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: cacheFileObject.object })
 102
 103   return sequelizeTypescript.transaction(async t => {
 104     const cacheFile = await VideoRedundancyModel.loadByUrl(cacheFileObject.id)
 105     if (!cacheFile) throw new Error('Unknown video cache ' + cacheFileObject.id)
 106
 107     if (cacheFile.actorId !== byActor.id) throw new Error('Cannot delete redundancy ' + cacheFile.url + ' of another actor.')
 108
 109     await cacheFile.destroy()
 110
 111     if (video.isOwned()) {
 112       // Don't resend the activity to the sender
 113       const exceptions = [ byActor ]
 114
 115       await forwardVideoRelatedActivity(activity, t, exceptions, video)
 116     }
 117   })
 118 }
 119
 120 function processUndoFollow (follower: ActorModel, followActivity: ActivityFollow) {
 121   return sequelizeTypescript.transaction(async t => {
 122     const following = await ActorModel.loadByUrlAndPopulateAccountAndChannel(followActivity.object, t)
 123     const actorFollow = await ActorFollowModel.loadByActorAndTarget(follower.id, following.id, t)
 124
 125     if (!actorFollow) throw new Error(`'Unknown actor follow ${follower.id} -> ${following.id}.`)
 126
 127     await actorFollow.destroy({ transaction: t })
 128
 129     return undefined
 130   })
 131 }
 132
 133 function processUndoAnnounce (byActor: ActorModel, announceActivity: ActivityAnnounce) {
 134   return sequelizeTypescript.transaction(async t => {
 135     const share = await VideoShareModel.loadByUrl(announceActivity.id, t)
 136     if (!share) throw new Error(`Unknown video share ${announceActivity.id}.`)
 137
 138     if (share.actorId !== byActor.id) throw new Error(`${share.url} is not shared by ${byActor.url}.`)
 139
 140     await share.destroy({ transaction: t })
 141
 142     if (share.Video.isOwned()) {
 143       // Don't resend the activity to the sender
 144       const exceptions = [ byActor ]
 145
 146       await forwardVideoRelatedActivity(announceActivity, t, exceptions, share.Video)
 147     }
 148   })
 149 }