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

   1 import * as validator from 'validator'
   2 import { CONSTRAINTS_FIELDS } from '../../../initializers'
   3 import { isTestInstance } from '../../core-utils'
   4 import { exists } from '../misc'
   5
   6 function isUrlValid (url: string) {
   7   const isURLOptions = {
   8     require_host: true,
   9     require_tld: true,
  10     require_protocol: true,
  11     require_valid_protocol: true,
  12     protocols: [ 'http', 'https' ]
  13   }
  14
  15   // We validate 'localhost', so we don't have the top level domain
  16   if (isTestInstance()) {
  17     isURLOptions.require_tld = false
  18   }
  19
  20   return exists(url) && validator.isURL('' + url, isURLOptions)
  21 }
  22
  23 function isActivityPubUrlValid (url: string) {
  24   return isUrlValid(url) && validator.isLength('' + url, CONSTRAINTS_FIELDS.ACTORS.URL)
  25 }
  26
  27 function isBaseActivityValid (activity: any, type: string) {
  28   return (activity['@context'] === undefined || Array.isArray(activity['@context'])) &&
  29     activity.type === type &&
  30     isActivityPubUrlValid(activity.id) &&
  31     isObjectValid(activity.actor) &&
  32     isUrlCollectionValid(activity.to) &&
  33     isUrlCollectionValid(activity.cc)
  34 }
  35
  36 function isUrlCollectionValid (collection: any) {
  37   return collection === undefined ||
  38     (Array.isArray(collection) && collection.every(t => isActivityPubUrlValid(t)))
  39 }
  40
  41 function isObjectValid (object: any) {
  42   return exists(object) &&
  43     (
  44       isActivityPubUrlValid(object) || isActivityPubUrlValid(object.id)
  45     )
  46 }
  47
  48 function setValidAttributedTo (obj: any) {
  49   if (Array.isArray(obj.attributedTo) === false) {
  50     obj.attributedTo = []
  51     return true
  52   }
  53
  54   obj.attributedTo = obj.attributedTo.filter(a => {
  55     return (a.type === 'Group' || a.type === 'Person') && isActivityPubUrlValid(a.id)
  56   })
  57
  58   return true
  59 }
  60
  61 export {
  62   isUrlValid,
  63   isActivityPubUrlValid,
  64   isBaseActivityValid,
  65   setValidAttributedTo,
  66   isObjectValid
  67 }