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 { VideoChannelModel } from '../../models/video/video-channel'
   9 import { AccountModel } from '../../models/account/account'
  10
  11 const inboxRouter = express.Router()
  12
  13 inboxRouter.post('/inbox',
  14   signatureValidator,
  15   asyncMiddleware(checkSignature),
  16   asyncMiddleware(activityPubValidator),
  17   asyncMiddleware(inboxController)
  18 )
  19
  20 inboxRouter.post('/accounts/:name/inbox',
  21   signatureValidator,
  22   asyncMiddleware(checkSignature),
  23   asyncMiddleware(localAccountValidator),
  24   asyncMiddleware(activityPubValidator),
  25   asyncMiddleware(inboxController)
  26 )
  27 inboxRouter.post('/video-channels/:name/inbox',
  28   signatureValidator,
  29   asyncMiddleware(checkSignature),
  30   asyncMiddleware(localVideoChannelValidator),
  31   asyncMiddleware(activityPubValidator),
  32   asyncMiddleware(inboxController)
  33 )
  34
  35 // ---------------------------------------------------------------------------
  36
  37 export {
  38   inboxRouter
  39 }
  40
  41 // ---------------------------------------------------------------------------
  42
  43 async function inboxController (req: express.Request, res: express.Response, next: express.NextFunction) {
  44   const rootActivity: RootActivity = req.body
  45   let activities: Activity[] = []
  46
  47   if ([ 'Collection', 'CollectionPage' ].indexOf(rootActivity.type) !== -1) {
  48     activities = (rootActivity as ActivityPubCollection).items
  49   } else if ([ 'OrderedCollection', 'OrderedCollectionPage' ].indexOf(rootActivity.type) !== -1) {
  50     activities = (rootActivity as ActivityPubOrderedCollection<Activity>).orderedItems
  51   } else {
  52     activities = [ rootActivity as Activity ]
  53   }
  54
  55   // Only keep activities we are able to process
  56   logger.debug('Filtering %d activities...', activities.length)
  57   activities = activities.filter(a => isActivityValid(a))
  58   logger.debug('We keep %d activities.', activities.length, { activities })
  59
  60   let accountOrChannel: VideoChannelModel | AccountModel
  61   if (res.locals.account) {
  62     accountOrChannel = res.locals.account
  63   } else if (res.locals.videoChannel) {
  64     accountOrChannel = res.locals.videoChannel
  65   }
  66
  67   logger.info('Receiving inbox requests for %d activities by %s.', activities.length, res.locals.signature.actor.url)
  68
  69   await processActivities(activities, res.locals.signature.actor, accountOrChannel ? accountOrChannel.Actor : undefined)
  70
  71   res.status(204).end()
  72 }