server/controllers/activitypub/inbox.ts

   1 import * as express from 'express'
   2 import { Activity, ActivityPubCollection, ActivityPubOrderedCollection, RootActivity } from '../../../shared'
   3 import { isActivityValid } from '../../helpers/custom-validators/activitypub/activity'
   4 import { logger } from '../../helpers/logger'
   5 import { processActivities } from '../../lib/activitypub/process/process'
   6 import { asyncMiddleware, checkSignature, localAccountValidator, localVideoChannelValidator, signatureValidator } from '../../middlewares'
   7 import { activityPubValidator } from '../../middlewares/validators/activitypub/activity'
   8 import { queue } from 'async'
   9 import { MActorDefault, MActorSignature } from '../../typings/models'
  10
  11 const inboxRouter = express.Router()
  12
  13 inboxRouter.post('/inbox',
  14   signatureValidator,
  15   asyncMiddleware(checkSignature),
  16   asyncMiddleware(activityPubValidator),
  17   inboxController
  18 )
  19
  20 inboxRouter.post('/accounts/:name/inbox',
  21   signatureValidator,
  22   asyncMiddleware(checkSignature),
  23   asyncMiddleware(localAccountValidator),
  24   asyncMiddleware(activityPubValidator),
  25   inboxController
  26 )
  27 inboxRouter.post('/video-channels/:name/inbox',
  28   signatureValidator,
  29   asyncMiddleware(checkSignature),
  30   asyncMiddleware(localVideoChannelValidator),
  31   asyncMiddleware(activityPubValidator),
  32   inboxController
  33 )
  34
  35 // ---------------------------------------------------------------------------
  36
  37 export {
  38   inboxRouter
  39 }
  40
  41 // ---------------------------------------------------------------------------
  42
  43 type QueueParam = { activities: Activity[], signatureActor?: MActorSignature, inboxActor?: MActorDefault }
  44 const inboxQueue = queue<QueueParam, Error>((task, cb) => {
  45   const options = { signatureActor: task.signatureActor, inboxActor: task.inboxActor }
  46
  47   processActivities(task.activities, options)
  48     .then(() => cb())
  49     .catch(err => {
  50       logger.error('Error in process activities.', { err })
  51       cb()
  52     })
  53 })
  54
  55 function inboxController (req: express.Request, res: express.Response) {
  56   const rootActivity: RootActivity = req.body
  57   let activities: Activity[]
  58
  59   if ([ 'Collection', 'CollectionPage' ].includes(rootActivity.type)) {
  60     activities = (rootActivity as ActivityPubCollection).items
  61   } else if ([ 'OrderedCollection', 'OrderedCollectionPage' ].includes(rootActivity.type)) {
  62     activities = (rootActivity as ActivityPubOrderedCollection<Activity>).orderedItems
  63   } else {
  64     activities = [ rootActivity as Activity ]
  65   }
  66
  67   // Only keep activities we are able to process
  68   logger.debug('Filtering %d activities...', activities.length)
  69   activities = activities.filter(a => isActivityValid(a))
  70   logger.debug('We keep %d activities.', activities.length, { activities })
  71
  72   const accountOrChannel = res.locals.account || res.locals.videoChannel
  73
  74   logger.info('Receiving inbox requests for %d activities by %s.', activities.length, res.locals.signature.actor.url)
  75
  76   inboxQueue.push({
  77     activities,
  78     signatureActor: res.locals.signature.actor,
  79     inboxActor: accountOrChannel ? accountOrChannel.Actor : undefined
  80   })
  81
  82   return res.status(204).end()
  83 }