server/controllers/activitypub/inbox.ts

   1 import * as express from 'express'
   2 import { Activity, ActivityPubCollection, ActivityPubOrderedCollection, RootActivity } from '../../../shared'
   3 import { logger } from '../../helpers'
   4 import { isActivityValid } from '../../helpers/custom-validators/activitypub/activity'
   5 import { processActivities } from '../../lib/activitypub/process/process'
   6 import { asyncMiddleware, checkSignature, localAccountValidator, signatureValidator } from '../../middlewares'
   7 import { activityPubValidator } from '../../middlewares/validators/activitypub/activity'
   8
   9 const inboxRouter = express.Router()
  10
  11 inboxRouter.post('/inbox',
  12   signatureValidator,
  13   asyncMiddleware(checkSignature),
  14   activityPubValidator,
  15   asyncMiddleware(inboxController)
  16 )
  17
  18 inboxRouter.post('/account/:name/inbox',
  19   signatureValidator,
  20   asyncMiddleware(checkSignature),
  21   localAccountValidator,
  22   activityPubValidator,
  23   asyncMiddleware(inboxController)
  24 )
  25
  26 // ---------------------------------------------------------------------------
  27
  28 export {
  29   inboxRouter
  30 }
  31
  32 // ---------------------------------------------------------------------------
  33
  34 async function inboxController (req: express.Request, res: express.Response, next: express.NextFunction) {
  35   const rootActivity: RootActivity = req.body
  36   let activities: Activity[] = []
  37
  38   if ([ 'Collection', 'CollectionPage' ].indexOf(rootActivity.type) !== -1) {
  39     activities = (rootActivity as ActivityPubCollection).items
  40   } else if ([ 'OrderedCollection', 'OrderedCollectionPage' ].indexOf(rootActivity.type) !== -1) {
  41     activities = (rootActivity as ActivityPubOrderedCollection<Activity>).orderedItems
  42   } else {
  43     activities = [ rootActivity as Activity ]
  44   }
  45
  46   // Only keep activities we are able to process
  47   logger.debug('Filtering %d activities...', activities.length)
  48   activities = activities.filter(a => isActivityValid(a))
  49   logger.debug('We keep %d activities.', activities.length, { activities })
  50
  51   await processActivities(activities, res.locals.signature.account, res.locals.account)
  52
  53   res.status(204).end()
  54 }