server/helpers/custom-validators/activitypub/activity.ts

   1 import * as validator from 'validator'
   2 import { Activity, ActivityType } from '../../../../shared/models/activitypub'
   3 import { isActorAcceptActivityValid, isActorDeleteActivityValid, isActorFollowActivityValid } from './actor'
   4 import { isAnnounceActivityValid } from './announce'
   5 import { isActivityPubUrlValid } from './misc'
   6 import { isDislikeActivityValid, isLikeActivityValid } from './rate'
   7 import { isUndoActivityValid } from './undo'
   8 import { isVideoCommentCreateActivityValid } from './video-comments'
   9 import {
  10   isVideoFlagValid,
  11   isVideoTorrentCreateActivityValid,
  12   isVideoTorrentDeleteActivityValid,
  13   isVideoTorrentUpdateActivityValid
  14 } from './videos'
  15 import { isViewActivityValid } from './view'
  16
  17 function isRootActivityValid (activity: any) {
  18   return Array.isArray(activity['@context']) &&
  19     (
  20       (activity.type === 'Collection' || activity.type === 'OrderedCollection') &&
  21       validator.isInt(activity.totalItems, { min: 0 }) &&
  22       Array.isArray(activity.items)
  23     ) ||
  24     (
  25       isActivityPubUrlValid(activity.id) &&
  26       isActivityPubUrlValid(activity.actor)
  27     )
  28 }
  29
  30 const activityCheckers: { [ P in ActivityType ]: (activity: Activity) => boolean } = {
  31   Create: checkCreateActivity,
  32   Update: checkUpdateActivity,
  33   Delete: checkDeleteActivity,
  34   Follow: checkFollowActivity,
  35   Accept: checkAcceptActivity,
  36   Announce: checkAnnounceActivity,
  37   Undo: checkUndoActivity,
  38   Like: checkLikeActivity
  39 }
  40
  41 function isActivityValid (activity: any) {
  42   const checker = activityCheckers[activity.type]
  43   // Unknown activity type
  44   if (!checker) return false
  45
  46   return checker(activity)
  47 }
  48
  49 // ---------------------------------------------------------------------------
  50
  51 export {
  52   isRootActivityValid,
  53   isActivityValid
  54 }
  55
  56 // ---------------------------------------------------------------------------
  57
  58 function checkCreateActivity (activity: any) {
  59   return isViewActivityValid(activity) ||
  60     isDislikeActivityValid(activity) ||
  61     isVideoTorrentCreateActivityValid(activity) ||
  62     isVideoFlagValid(activity) ||
  63     isVideoCommentCreateActivityValid(activity)
  64 }
  65
  66 function checkUpdateActivity (activity: any) {
  67   return isVideoTorrentUpdateActivityValid(activity)
  68 }
  69
  70 function checkDeleteActivity (activity: any) {
  71   return isVideoTorrentDeleteActivityValid(activity) ||
  72     isActorDeleteActivityValid(activity)
  73 }
  74
  75 function checkFollowActivity (activity: any) {
  76   return isActorFollowActivityValid(activity)
  77 }
  78
  79 function checkAcceptActivity (activity: any) {
  80   return isActorAcceptActivityValid(activity)
  81 }
  82
  83 function checkAnnounceActivity (activity: any) {
  84   return isAnnounceActivityValid(activity)
  85 }
  86
  87 function checkUndoActivity (activity: any) {
  88   return isUndoActivityValid(activity)
  89 }
  90
  91 function checkLikeActivity (activity: any) {
  92   return isLikeActivityValid(activity)
  93 }