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

   1 import * as validator from 'validator'
   2 import { Activity, ActivityType } from '../../../../shared/models/activitypub'
   3 import {
   4   isActorAcceptActivityValid, isActorDeleteActivityValid, isActorFollowActivityValid, isActorRejectActivityValid,
   5   isActorUpdateActivityValid
   6 } from './actor'
   7 import { isAnnounceActivityValid } from './announce'
   8 import { isActivityPubUrlValid } from './misc'
   9 import { isDislikeActivityValid, isLikeActivityValid } from './rate'
  10 import { isUndoActivityValid } from './undo'
  11 import { isVideoCommentCreateActivityValid, isVideoCommentDeleteActivityValid } from './video-comments'
  12 import {
  13   isVideoFlagValid,
  14   sanitizeAndCheckVideoTorrentCreateActivity,
  15   isVideoTorrentDeleteActivityValid,
  16   sanitizeAndCheckVideoTorrentUpdateActivity
  17 } from './videos'
  18 import { isViewActivityValid } from './view'
  19 import { exists } from '../misc'
  20
  21 function isRootActivityValid (activity: any) {
  22   return Array.isArray(activity['@context']) && (
  23     (
  24       (activity.type === 'Collection' || activity.type === 'OrderedCollection') &&
  25       validator.isInt(activity.totalItems, { min: 0 }) &&
  26       Array.isArray(activity.items)
  27     ) ||
  28     (
  29       isActivityPubUrlValid(activity.id) &&
  30       exists(activity.actor) &&
  31       (isActivityPubUrlValid(activity.actor) || isActivityPubUrlValid(activity.actor.id))
  32     )
  33   )
  34 }
  35
  36 const activityCheckers: { [ P in ActivityType ]: (activity: Activity) => boolean } = {
  37   Create: checkCreateActivity,
  38   Update: checkUpdateActivity,
  39   Delete: checkDeleteActivity,
  40   Follow: checkFollowActivity,
  41   Accept: checkAcceptActivity,
  42   Reject: checkRejectActivity,
  43   Announce: checkAnnounceActivity,
  44   Undo: checkUndoActivity,
  45   Like: checkLikeActivity
  46 }
  47
  48 function isActivityValid (activity: any) {
  49   const checker = activityCheckers[activity.type]
  50   // Unknown activity type
  51   if (!checker) return false
  52
  53   return checker(activity)
  54 }
  55
  56 // ---------------------------------------------------------------------------
  57
  58 export {
  59   isRootActivityValid,
  60   isActivityValid
  61 }
  62
  63 // ---------------------------------------------------------------------------
  64
  65 function checkCreateActivity (activity: any) {
  66   return isViewActivityValid(activity) ||
  67     isDislikeActivityValid(activity) ||
  68     sanitizeAndCheckVideoTorrentCreateActivity(activity) ||
  69     isVideoFlagValid(activity) ||
  70     isVideoCommentCreateActivityValid(activity)
  71 }
  72
  73 function checkUpdateActivity (activity: any) {
  74   return sanitizeAndCheckVideoTorrentUpdateActivity(activity) ||
  75     isActorUpdateActivityValid(activity)
  76 }
  77
  78 function checkDeleteActivity (activity: any) {
  79   return isVideoTorrentDeleteActivityValid(activity) ||
  80     isActorDeleteActivityValid(activity) ||
  81     isVideoCommentDeleteActivityValid(activity)
  82 }
  83
  84 function checkFollowActivity (activity: any) {
  85   return isActorFollowActivityValid(activity)
  86 }
  87
  88 function checkAcceptActivity (activity: any) {
  89   return isActorAcceptActivityValid(activity)
  90 }
  91
  92 function checkRejectActivity (activity: any) {
  93   return isActorRejectActivityValid(activity)
  94 }
  95
  96 function checkAnnounceActivity (activity: any) {
  97   return isAnnounceActivityValid(activity)
  98 }
  99
 100 function checkUndoActivity (activity: any) {
 101   return isUndoActivityValid(activity)
 102 }
 103
 104 function checkLikeActivity (activity: any) {
 105   return isLikeActivityValid(activity)
 106 }