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,
   5   isActorDeleteActivityValid,
   6   isActorFollowActivityValid,
   7   isActorRejectActivityValid,
   8   isActorUpdateActivityValid
   9 } from './actor'
  10 import { isAnnounceActivityValid } from './announce'
  11 import { isActivityPubUrlValid } from './misc'
  12 import { isDislikeActivityValid, isLikeActivityValid } from './rate'
  13 import { isUndoActivityValid } from './undo'
  14 import { isVideoCommentCreateActivityValid, isVideoCommentDeleteActivityValid } from './video-comments'
  15 import {
  16   isVideoFlagValid,
  17   isVideoTorrentDeleteActivityValid,
  18   sanitizeAndCheckVideoTorrentCreateActivity,
  19   sanitizeAndCheckVideoTorrentUpdateActivity
  20 } from './videos'
  21 import { isViewActivityValid } from './view'
  22 import { exists } from '../misc'
  23 import { isCacheFileCreateActivityValid, isCacheFileUpdateActivityValid } from './cache-file'
  24
  25 function isRootActivityValid (activity: any) {
  26   return Array.isArray(activity['@context']) && (
  27     (
  28       (activity.type === 'Collection' || activity.type === 'OrderedCollection') &&
  29       validator.isInt(activity.totalItems, { min: 0 }) &&
  30       Array.isArray(activity.items)
  31     ) ||
  32     (
  33       isActivityPubUrlValid(activity.id) &&
  34       exists(activity.actor) &&
  35       (isActivityPubUrlValid(activity.actor) || isActivityPubUrlValid(activity.actor.id))
  36     )
  37   )
  38 }
  39
  40 const activityCheckers: { [ P in ActivityType ]: (activity: Activity) => boolean } = {
  41   Create: checkCreateActivity,
  42   Update: checkUpdateActivity,
  43   Delete: checkDeleteActivity,
  44   Follow: checkFollowActivity,
  45   Accept: checkAcceptActivity,
  46   Reject: checkRejectActivity,
  47   Announce: checkAnnounceActivity,
  48   Undo: checkUndoActivity,
  49   Like: checkLikeActivity
  50 }
  51
  52 function isActivityValid (activity: any) {
  53   const checker = activityCheckers[activity.type]
  54   // Unknown activity type
  55   if (!checker) return false
  56
  57   return checker(activity)
  58 }
  59
  60 // ---------------------------------------------------------------------------
  61
  62 export {
  63   isRootActivityValid,
  64   isActivityValid
  65 }
  66
  67 // ---------------------------------------------------------------------------
  68
  69 function checkCreateActivity (activity: any) {
  70   return isViewActivityValid(activity) ||
  71     isDislikeActivityValid(activity) ||
  72     sanitizeAndCheckVideoTorrentCreateActivity(activity) ||
  73     isVideoFlagValid(activity) ||
  74     isVideoCommentCreateActivityValid(activity) ||
  75     isCacheFileCreateActivityValid(activity)
  76 }
  77
  78 function checkUpdateActivity (activity: any) {
  79   return isCacheFileUpdateActivityValid(activity) ||
  80     sanitizeAndCheckVideoTorrentUpdateActivity(activity) ||
  81     isActorUpdateActivityValid(activity)
  82 }
  83
  84 function checkDeleteActivity (activity: any) {
  85   return isVideoTorrentDeleteActivityValid(activity) ||
  86     isActorDeleteActivityValid(activity) ||
  87     isVideoCommentDeleteActivityValid(activity)
  88 }
  89
  90 function checkFollowActivity (activity: any) {
  91   return isActorFollowActivityValid(activity)
  92 }
  93
  94 function checkAcceptActivity (activity: any) {
  95   return isActorAcceptActivityValid(activity)
  96 }
  97
  98 function checkRejectActivity (activity: any) {
  99   return isActorRejectActivityValid(activity)
 100 }
 101
 102 function checkAnnounceActivity (activity: any) {
 103   return isAnnounceActivityValid(activity)
 104 }
 105
 106 function checkUndoActivity (activity: any) {
 107   return isUndoActivityValid(activity)
 108 }
 109
 110 function checkLikeActivity (activity: any) {
 111   return isLikeActivityValid(activity)
 112 }