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

   1 import * as validator from 'validator'
   2 import { Activity, ActivityType } from '../../../../shared/models/activitypub'
   3 import { isAccountAcceptActivityValid, isAccountDeleteActivityValid, isAccountFollowActivityValid } 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 { isVideoChannelCreateActivityValid, isVideoChannelDeleteActivityValid, isVideoChannelUpdateActivityValid } from './video-channels'
   9 import {
  10   isVideoFlagValid,
  11   isVideoTorrentAddActivityValid,
  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   Add: checkAddActivity,
  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     isVideoChannelCreateActivityValid(activity) ||
  63     isVideoFlagValid(activity)
  64 }
  65
  66 function checkAddActivity (activity: any) {
  67   return isVideoTorrentAddActivityValid(activity)
  68 }
  69
  70 function checkUpdateActivity (activity: any) {
  71   return isVideoTorrentUpdateActivityValid(activity) ||
  72     isVideoChannelUpdateActivityValid(activity)
  73 }
  74
  75 function checkDeleteActivity (activity: any) {
  76   return isVideoTorrentDeleteActivityValid(activity) ||
  77     isVideoChannelDeleteActivityValid(activity) ||
  78     isAccountDeleteActivityValid(activity)
  79 }
  80
  81 function checkFollowActivity (activity: any) {
  82   return isAccountFollowActivityValid(activity)
  83 }
  84
  85 function checkAcceptActivity (activity: any) {
  86   return isAccountAcceptActivityValid(activity)
  87 }
  88
  89 function checkAnnounceActivity (activity: any) {
  90   return isAnnounceActivityValid(activity)
  91 }
  92
  93 function checkUndoActivity (activity: any) {
  94   return isUndoActivityValid(activity)
  95 }
  96
  97 function checkLikeActivity (activity: any) {
  98   return isLikeActivityValid(activity)
  99 }