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