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     exists(activity.actor) &&
  32     (isActivityPubUrlValid(activity.actor) || isActivityPubUrlValid(activity.actor.id)) &&
  33     (
  34       activity.to === undefined ||
  35       (Array.isArray(activity.to) && activity.to.every(t => isActivityPubUrlValid(t)))
  36     ) &&
  37     (
  38       activity.cc === undefined ||
  39       (Array.isArray(activity.cc) && activity.cc.every(t => isActivityPubUrlValid(t)))
  40     )
  41 }
  42
  43 function setValidAttributedTo (obj: any) {
  44   if (Array.isArray(obj.attributedTo) === false) {
  45     obj.attributedTo = []
  46     return true
  47   }
  48
  49   obj.attributedTo = obj.attributedTo.filter(a => {
  50     return (a.type === 'Group' || a.type === 'Person') && isActivityPubUrlValid(a.id)
  51   })
  52
  53   return true
  54 }
  55
  56 export {
  57   isUrlValid,
  58   isActivityPubUrlValid,
  59   isBaseActivityValid,
  60   setValidAttributedTo
  61 }