import * as express from 'express' import { Activity, ActivityPubCollection, ActivityPubOrderedCollection, ActivityType, RootActivity } from '../../../shared' import { logger } from '../../helpers' import { isActivityValid } from '../../helpers/custom-validators/activitypub/activity' import { processCreateActivity, processFlagActivity, processUpdateActivity } from '../../lib' import { processAcceptActivity } from '../../lib/activitypub/process-accept' import { processAddActivity } from '../../lib/activitypub/process-add' import { processAnnounceActivity } from '../../lib/activitypub/process-announce' import { processDeleteActivity } from '../../lib/activitypub/process-delete' import { processFollowActivity } from '../../lib/activitypub/process-follow' import { asyncMiddleware, checkSignature, localAccountValidator, signatureValidator } from '../../middlewares' import { activityPubValidator } from '../../middlewares/validators/activitypub/activity' import { AccountInstance } from '../../models/account/account-interface' const processActivity: { [ P in ActivityType ]: (activity: Activity, inboxAccount?: AccountInstance) => Promise } = { Create: processCreateActivity, Add: processAddActivity, Update: processUpdateActivity, Flag: processFlagActivity, Delete: processDeleteActivity, Follow: processFollowActivity, Accept: processAcceptActivity, Announce: processAnnounceActivity } const inboxRouter = express.Router() inboxRouter.post('/inbox', signatureValidator, asyncMiddleware(checkSignature), activityPubValidator, asyncMiddleware(inboxController) ) inboxRouter.post('/account/:name/inbox', signatureValidator, asyncMiddleware(checkSignature), localAccountValidator, activityPubValidator, asyncMiddleware(inboxController) ) // --------------------------------------------------------------------------- export { inboxRouter } // --------------------------------------------------------------------------- async function inboxController (req: express.Request, res: express.Response, next: express.NextFunction) { const rootActivity: RootActivity = req.body let activities: Activity[] = [] if ([ 'Collection', 'CollectionPage' ].indexOf(rootActivity.type) !== -1) { activities = (rootActivity as ActivityPubCollection).items } else if ([ 'OrderedCollection', 'OrderedCollectionPage' ].indexOf(rootActivity.type) !== -1) { activities = (rootActivity as ActivityPubOrderedCollection).orderedItems } else { activities = [ rootActivity as Activity ] } // Only keep activities we are able to process logger.debug('Filtering activities...', { activities }) activities = activities.filter(a => isActivityValid(a)) logger.debug('We keep %d activities.', activities.length, { activities }) await processActivities(activities, res.locals.account) res.status(204).end() } async function processActivities (activities: Activity[], inboxAccount?: AccountInstance) { for (const activity of activities) { const activityProcessor = processActivity[activity.type] if (activityProcessor === undefined) { logger.warn('Unknown activity type %s.', activity.type, { activityId: activity.id }) continue } await activityProcessor(activity, inboxAccount) } }