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

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+import * as validator from 'validator'
+import { CONSTRAINTS_FIELDS } from '../../../initializers'
+import { isAccountNameValid } from '../accounts'
+import { exists, isUUIDValid } from '../misc'
+import { isActivityPubUrlValid, isBaseActivityValid } from './misc'
+
+function isActorEndpointsObjectValid (endpointObject: any) {
+  return isActivityPubUrlValid(endpointObject.sharedInbox)
+}
+
+function isActorPublicKeyObjectValid (publicKeyObject: any) {
+  return isActivityPubUrlValid(publicKeyObject.id) &&
+    isActivityPubUrlValid(publicKeyObject.owner) &&
+    isActorPublicKeyValid(publicKeyObject.publicKeyPem)
+}
+
+function isActorTypeValid (type: string) {
+  return type === 'Person' || type === 'Application' || type === 'Group'
+}
+
+function isActorPublicKeyValid (publicKey: string) {
+  return exists(publicKey) &&
+    typeof publicKey === 'string' &&
+    publicKey.startsWith('-----BEGIN PUBLIC KEY-----') &&
+    publicKey.endsWith('-----END PUBLIC KEY-----') &&
+    validator.isLength(publicKey, CONSTRAINTS_FIELDS.ACTOR.PUBLIC_KEY)
+}
+
+function isActorPreferredUsernameValid (preferredUsername: string) {
+  return isAccountNameValid(preferredUsername)
+}
+
+function isActorPrivateKeyValid (privateKey: string) {
+  return exists(privateKey) &&
+    typeof privateKey === 'string' &&
+    privateKey.startsWith('-----BEGIN RSA PRIVATE KEY-----') &&
+    privateKey.endsWith('-----END RSA PRIVATE KEY-----') &&
+    validator.isLength(privateKey, CONSTRAINTS_FIELDS.ACTOR.PRIVATE_KEY)
+}
+
+function isRemoteActorValid (remoteActor: any) {
+  return isActivityPubUrlValid(remoteActor.id) &&
+    isUUIDValid(remoteActor.uuid) &&
+    isActorTypeValid(remoteActor.type) &&
+    isActivityPubUrlValid(remoteActor.following) &&
+    isActivityPubUrlValid(remoteActor.followers) &&
+    isActivityPubUrlValid(remoteActor.inbox) &&
+    isActivityPubUrlValid(remoteActor.outbox) &&
+    isActorPreferredUsernameValid(remoteActor.preferredUsername) &&
+    isActivityPubUrlValid(remoteActor.url) &&
+    isActorPublicKeyObjectValid(remoteActor.publicKey) &&
+    isActorEndpointsObjectValid(remoteActor.endpoints)
+}
+
+function isActorFollowingCountValid (value: string) {
+  return exists(value) && validator.isInt('' + value, { min: 0 })
+}
+
+function isActorFollowersCountValid (value: string) {
+  return exists(value) && validator.isInt('' + value, { min: 0 })
+}
+
+function isActorDeleteActivityValid (activity: any) {
+  return isBaseActivityValid(activity, 'Delete')
+}
+
+function isActorFollowActivityValid (activity: any) {
+  return isBaseActivityValid(activity, 'Follow') &&
+    isActivityPubUrlValid(activity.object)
+}
+
+function isActorAcceptActivityValid (activity: any) {
+  return isBaseActivityValid(activity, 'Accept')
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  isActorEndpointsObjectValid,
+  isActorPublicKeyObjectValid,
+  isActorTypeValid,
+  isActorPublicKeyValid,
+  isActorPreferredUsernameValid,
+  isActorPrivateKeyValid,
+  isRemoteActorValid,
+  isActorFollowingCountValid,
+  isActorFollowersCountValid,
+  isActorFollowActivityValid,
+  isActorAcceptActivityValid,
+  isActorDeleteActivityValid
+}