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 { getActorUrl } from '../../../helpers/activitypub'
   4 import { retryTransactionWrapper } from '../../../helpers/database-utils'
   5 import { logger } from '../../../helpers/logger'
   6 import { sequelizeTypescript } from '../../../initializers'
   7 import { AccountModel } from '../../../models/account/account'
   8 import { AccountVideoRateModel } from '../../../models/account/account-video-rate'
   9 import { ActorModel } from '../../../models/activitypub/actor'
  10 import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
  11 import { forwardVideoRelatedActivity } from '../send/utils'
  12 import { getOrCreateVideoAndAccountAndChannel } from '../videos'
  13 import { VideoShareModel } from '../../../models/video/video-share'
  14 import { VideoRedundancyModel } from '../../../models/redundancy/video-redundancy'
  15
  16 async function processUndoActivity (activity: ActivityUndo) {
  17   const activityToUndo = activity.object
  18
  19   const actorUrl = getActorUrl(activity.actor)
  20
  21   if (activityToUndo.type === 'Like') {
  22     return retryTransactionWrapper(processUndoLike, actorUrl, activity)
  23   }
  24
  25   if (activityToUndo.type === 'Create') {
  26     if (activityToUndo.object.type === 'Dislike') {
  27       return retryTransactionWrapper(processUndoDislike, actorUrl, activity)
  28     } else if (activityToUndo.object.type === 'CacheFile') {
  29       return retryTransactionWrapper(processUndoCacheFile, actorUrl, activity)
  30     }
  31   }
  32
  33   if (activityToUndo.type === 'Follow') {
  34     return retryTransactionWrapper(processUndoFollow, actorUrl, activityToUndo)
  35   }
  36
  37   if (activityToUndo.type === 'Announce') {
  38     return retryTransactionWrapper(processUndoAnnounce, actorUrl, activityToUndo)
  39   }
  40
  41   logger.warn('Unknown activity object type %s -> %s when undo activity.', activityToUndo.type, { activity: activity.id })
  42
  43   return undefined
  44 }
  45
  46 // ---------------------------------------------------------------------------
  47
  48 export {
  49   processUndoActivity
  50 }
  51
  52 // ---------------------------------------------------------------------------
  53
  54 async function processUndoLike (actorUrl: string, activity: ActivityUndo) {
  55   const likeActivity = activity.object as ActivityLike
  56
  57   const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: likeActivity.object })
  58
  59   return sequelizeTypescript.transaction(async t => {
  60     const byAccount = await AccountModel.loadByUrl(actorUrl, t)
  61     if (!byAccount) throw new Error('Unknown account ' + actorUrl)
  62
  63     const rate = await AccountVideoRateModel.load(byAccount.id, video.id, t)
  64     if (!rate) throw new Error(`Unknown rate by account ${byAccount.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 = [ byAccount.Actor ]
  72
  73       await forwardVideoRelatedActivity(activity, t, exceptions, video)
  74     }
  75   })
  76 }
  77
  78 async function processUndoDislike (actorUrl: string, activity: ActivityUndo) {
  79   const dislike = activity.object.object as DislikeObject
  80
  81   const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: dislike.object })
  82
  83   return sequelizeTypescript.transaction(async t => {
  84     const byAccount = await AccountModel.loadByUrl(actorUrl, t)
  85     if (!byAccount) throw new Error('Unknown account ' + actorUrl)
  86
  87     const rate = await AccountVideoRateModel.load(byAccount.id, video.id, t)
  88     if (!rate) throw new Error(`Unknown rate by account ${byAccount.id} for video ${video.id}.`)
  89
  90     await rate.destroy({ transaction: t })
  91     await video.decrement('dislikes', { transaction: t })
  92
  93     if (video.isOwned()) {
  94       // Don't resend the activity to the sender
  95       const exceptions = [ byAccount.Actor ]
  96
  97       await forwardVideoRelatedActivity(activity, t, exceptions, video)
  98     }
  99   })
 100 }
 101
 102 async function processUndoCacheFile (actorUrl: string, activity: ActivityUndo) {
 103   const cacheFileObject = activity.object.object as CacheFileObject
 104
 105   const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: cacheFileObject.object })
 106
 107   return sequelizeTypescript.transaction(async t => {
 108     const byActor = await ActorModel.loadByUrl(actorUrl)
 109     if (!byActor) throw new Error('Unknown actor ' + actorUrl)
 110
 111     const cacheFile = await VideoRedundancyModel.loadByUrl(cacheFileObject.id)
 112     if (!cacheFile) throw new Error('Unknown video cache ' + cacheFile.url)
 113
 114     await cacheFile.destroy()
 115
 116     if (video.isOwned()) {
 117       // Don't resend the activity to the sender
 118       const exceptions = [ byActor ]
 119
 120       await forwardVideoRelatedActivity(activity, t, exceptions, video)
 121     }
 122   })
 123 }
 124
 125 function processUndoFollow (actorUrl: string, followActivity: ActivityFollow) {
 126   return sequelizeTypescript.transaction(async t => {
 127     const follower = await ActorModel.loadByUrl(actorUrl, t)
 128     const following = await ActorModel.loadByUrl(followActivity.object, t)
 129     const actorFollow = await ActorFollowModel.loadByActorAndTarget(follower.id, following.id, t)
 130
 131     if (!actorFollow) throw new Error(`'Unknown actor follow ${follower.id} -> ${following.id}.`)
 132
 133     await actorFollow.destroy({ transaction: t })
 134
 135     return undefined
 136   })
 137 }
 138
 139 function processUndoAnnounce (actorUrl: string, announceActivity: ActivityAnnounce) {
 140   return sequelizeTypescript.transaction(async t => {
 141     const byActor = await ActorModel.loadByUrl(actorUrl, t)
 142     if (!byActor) throw new Error('Unknown actor ' + actorUrl)
 143
 144     const share = await VideoShareModel.loadByUrl(announceActivity.id, t)
 145     if (!share) throw new Error(`Unknown video share ${announceActivity.id}.`)
 146
 147     if (share.actorId !== byActor.id) throw new Error(`${share.url} is not shared by ${byActor.url}.`)
 148
 149     await share.destroy({ transaction: t })
 150
 151     if (share.Video.isOwned()) {
 152       // Don't resend the activity to the sender
 153       const exceptions = [ byActor ]
 154
 155       await forwardVideoRelatedActivity(announceActivity, t, exceptions, share.Video)
 156     }
 157   })
 158 }