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 { isVideoChannelDeleteActivityValid, isVideoChannelUpdateActivityValid } from './video-channels'
   9 import { isVideoCommentCreateActivityValid } from './video-comments'
  10 import {
  11   isVideoFlagValid,
  12   isVideoTorrentCreateActivityValid,
  13   isVideoTorrentDeleteActivityValid,
  14   isVideoTorrentUpdateActivityValid
  15 } from './videos'
  16 import { isViewActivityValid } from './view'
  17
  18 function isRootActivityValid (activity: any) {
  19   return Array.isArray(activity['@context']) &&
  20     (
  21       (activity.type === 'Collection' || activity.type === 'OrderedCollection') &&
  22       validator.isInt(activity.totalItems, { min: 0 }) &&
  23       Array.isArray(activity.items)
  24     ) ||
  25     (
  26       isActivityPubUrlValid(activity.id) &&
  27       isActivityPubUrlValid(activity.actor)
  28     )
  29 }
  30
  31 const activityCheckers: { [ P in ActivityType ]: (activity: Activity) => boolean } = {
  32   Create: checkCreateActivity,
  33   Update: checkUpdateActivity,
  34   Delete: checkDeleteActivity,
  35   Follow: checkFollowActivity,
  36   Accept: checkAcceptActivity,
  37   Announce: checkAnnounceActivity,
  38   Undo: checkUndoActivity,
  39   Like: checkLikeActivity
  40 }
  41
  42 function isActivityValid (activity: any) {
  43   const checker = activityCheckers[activity.type]
  44   // Unknown activity type
  45   if (!checker) return false
  46
  47   return checker(activity)
  48 }
  49
  50 // ---------------------------------------------------------------------------
  51
  52 export {
  53   isRootActivityValid,
  54   isActivityValid
  55 }
  56
  57 // ---------------------------------------------------------------------------
  58
  59 function checkCreateActivity (activity: any) {
  60   return isViewActivityValid(activity) ||
  61     isDislikeActivityValid(activity) ||
  62     isVideoTorrentCreateActivityValid(activity) ||
  63     isVideoFlagValid(activity) ||
  64     isVideoCommentCreateActivityValid(activity)
  65 }
  66
  67 function checkUpdateActivity (activity: any) {
  68   return isVideoTorrentUpdateActivityValid(activity) ||
  69     isVideoChannelUpdateActivityValid(activity)
  70 }
  71
  72 function checkDeleteActivity (activity: any) {
  73   return isVideoTorrentDeleteActivityValid(activity) ||
  74     isVideoChannelDeleteActivityValid(activity) ||
  75     isActorDeleteActivityValid(activity)
  76 }
  77
  78 function checkFollowActivity (activity: any) {
  79   return isActorFollowActivityValid(activity)
  80 }
  81
  82 function checkAcceptActivity (activity: any) {
  83   return isActorAcceptActivityValid(activity)
  84 }
  85
  86 function checkAnnounceActivity (activity: any) {
  87   return isAnnounceActivityValid(activity)
  88 }
  89
  90 function checkUndoActivity (activity: any) {
  91   return isUndoActivityValid(activity)
  92 }
  93
  94 function checkLikeActivity (activity: any) {
  95   return isLikeActivityValid(activity)
  96 }