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 isActivityPubUrlValid (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) && validator.isLength('' + url, CONSTRAINTS_FIELDS.ACTOR.URL)
  21 }
  22
  23 function isBaseActivityValid (activity: any, type: string) {
  24   return (activity['@context'] === undefined || Array.isArray(activity['@context'])) &&
  25     activity.type === type &&
  26     isActivityPubUrlValid(activity.id) &&
  27     isActivityPubUrlValid(activity.actor) &&
  28     (
  29       activity.to === undefined ||
  30       (Array.isArray(activity.to) && activity.to.every(t => isActivityPubUrlValid(t)))
  31     ) &&
  32     (
  33       activity.cc === undefined ||
  34       (Array.isArray(activity.cc) && activity.cc.every(t => isActivityPubUrlValid(t)))
  35     )
  36 }
  37
  38 function setValidAttributedTo (obj: any) {
  39   if (Array.isArray(obj.attributedTo) === false) {
  40     obj.attributedTo = []
  41     return true
  42   }
  43
  44   const newAttributesTo = obj.attributedTo.filter(a => {
  45     return (a.type === 'Group' || a.type === 'Person') && isActivityPubUrlValid(a.id)
  46   })
  47
  48   obj.attributedTo = newAttributesTo
  49
  50   return true
  51 }
  52
  53 export {
  54   isActivityPubUrlValid,
  55   isBaseActivityValid,
  56   setValidAttributedTo
  57 }