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 {
  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 }
  64
  65 function checkUpdateActivity (activity: any) {
  66   return isVideoTorrentUpdateActivityValid(activity) ||
  67     isVideoChannelUpdateActivityValid(activity)
  68 }
  69
  70 function checkDeleteActivity (activity: any) {
  71   return isVideoTorrentDeleteActivityValid(activity) ||
  72     isVideoChannelDeleteActivityValid(activity) ||
  73     isActorDeleteActivityValid(activity)
  74 }
  75
  76 function checkFollowActivity (activity: any) {
  77   return isActorFollowActivityValid(activity)
  78 }
  79
  80 function checkAcceptActivity (activity: any) {
  81   return isActorAcceptActivityValid(activity)
  82 }
  83
  84 function checkAnnounceActivity (activity: any) {
  85   return isAnnounceActivityValid(activity)
  86 }
  87
  88 function checkUndoActivity (activity: any) {
  89   return isUndoActivityValid(activity)
  90 }
  91
  92 function checkLikeActivity (activity: any) {
  93   return isLikeActivityValid(activity)
  94 }