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

   1 import * as validator from 'validator'
   2 import { CONSTRAINTS_FIELDS } from '../../../initializers'
   3 import { isAccountNameValid } from '../accounts'
   4 import { exists } from '../misc'
   5 import { isVideoChannelNameValid } from '../video-channels'
   6 import { isActivityPubUrlValid, isBaseActivityValid, setValidAttributedTo } from './misc'
   7
   8 function isActorEndpointsObjectValid (endpointObject: any) {
   9   return isActivityPubUrlValid(endpointObject.sharedInbox)
  10 }
  11
  12 function isActorPublicKeyObjectValid (publicKeyObject: any) {
  13   return isActivityPubUrlValid(publicKeyObject.id) &&
  14     isActivityPubUrlValid(publicKeyObject.owner) &&
  15     isActorPublicKeyValid(publicKeyObject.publicKeyPem)
  16 }
  17
  18 function isActorTypeValid (type: string) {
  19   return type === 'Person' || type === 'Application' || type === 'Group'
  20 }
  21
  22 function isActorPublicKeyValid (publicKey: string) {
  23   return exists(publicKey) &&
  24     typeof publicKey === 'string' &&
  25     publicKey.startsWith('-----BEGIN PUBLIC KEY-----') &&
  26     publicKey.indexOf('-----END PUBLIC KEY-----') !== -1 &&
  27     validator.isLength(publicKey, CONSTRAINTS_FIELDS.ACTOR.PUBLIC_KEY)
  28 }
  29
  30 const actorNameRegExp = new RegExp('[ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_]+')
  31 function isActorPreferredUsernameValid (preferredUsername: string) {
  32   return exists(preferredUsername) && validator.matches(preferredUsername, actorNameRegExp)
  33 }
  34
  35 function isActorNameValid (name: string) {
  36   return isAccountNameValid(name) || isVideoChannelNameValid(name)
  37 }
  38
  39 function isActorPrivateKeyValid (privateKey: string) {
  40   return exists(privateKey) &&
  41     typeof privateKey === 'string' &&
  42     privateKey.startsWith('-----BEGIN RSA PRIVATE KEY-----') &&
  43     // Sometimes there is a \n at the end, so just assert the string contains the end mark
  44     privateKey.indexOf('-----END RSA PRIVATE KEY-----') !== -1 &&
  45     validator.isLength(privateKey, CONSTRAINTS_FIELDS.ACTOR.PRIVATE_KEY)
  46 }
  47
  48 function isRemoteActorValid (remoteActor: any) {
  49   return isActivityPubUrlValid(remoteActor.id) &&
  50     isActorTypeValid(remoteActor.type) &&
  51     isActivityPubUrlValid(remoteActor.following) &&
  52     isActivityPubUrlValid(remoteActor.followers) &&
  53     isActivityPubUrlValid(remoteActor.inbox) &&
  54     isActivityPubUrlValid(remoteActor.outbox) &&
  55     isActorPreferredUsernameValid(remoteActor.preferredUsername) &&
  56     isActivityPubUrlValid(remoteActor.url) &&
  57     isActorPublicKeyObjectValid(remoteActor.publicKey) &&
  58     isActorEndpointsObjectValid(remoteActor.endpoints) &&
  59     setValidAttributedTo(remoteActor) &&
  60     // If this is not an account, it should be attributed to an account
  61     // In PeerTube we use this to attach a video channel to a specific account
  62     (remoteActor.type === 'Person' || remoteActor.attributedTo.length !== 0)
  63 }
  64
  65 function isActorFollowingCountValid (value: string) {
  66   return exists(value) && validator.isInt('' + value, { min: 0 })
  67 }
  68
  69 function isActorFollowersCountValid (value: string) {
  70   return exists(value) && validator.isInt('' + value, { min: 0 })
  71 }
  72
  73 function isActorDeleteActivityValid (activity: any) {
  74   return isBaseActivityValid(activity, 'Delete')
  75 }
  76
  77 function isActorFollowActivityValid (activity: any) {
  78   return isBaseActivityValid(activity, 'Follow') &&
  79     isActivityPubUrlValid(activity.object)
  80 }
  81
  82 function isActorAcceptActivityValid (activity: any) {
  83   return isBaseActivityValid(activity, 'Accept')
  84 }
  85
  86 // ---------------------------------------------------------------------------
  87
  88 export {
  89   isActorEndpointsObjectValid,
  90   isActorPublicKeyObjectValid,
  91   isActorTypeValid,
  92   isActorPublicKeyValid,
  93   isActorPreferredUsernameValid,
  94   isActorPrivateKeyValid,
  95   isRemoteActorValid,
  96   isActorFollowingCountValid,
  97   isActorFollowersCountValid,
  98   isActorFollowActivityValid,
  99   isActorAcceptActivityValid,
 100   isActorDeleteActivityValid,
 101   isActorNameValid
 102 }