7 files changed, 167 insertions, 2 deletions

diff --git a/server/helpers/custom-validators/activitypub/account.ts b/server/helpers/custom-validators/activitypub/account.ts
new file mode 100644
index 000000000..8a7d1b7fe
--- /dev/null
+++ b/server/helpers/custom-validators/activitypub/account.ts
@@ -0,0 +1,123 @@
+import * as validator from 'validator'
+
+import { exists, isUUIDValid } from '../misc'
+import { isActivityPubUrlValid } from './misc'
+import { isUserUsernameValid } from '../users'
+
+function isAccountEndpointsObjectValid (endpointObject: any) {
+  return isAccountSharedInboxValid(endpointObject.sharedInbox)
+}
+
+function isAccountSharedInboxValid (sharedInbox: string) {
+  return isActivityPubUrlValid(sharedInbox)
+}
+
+function isAccountPublicKeyObjectValid (publicKeyObject: any) {
+  return isAccountPublicKeyIdValid(publicKeyObject.id) &&
+    isAccountPublicKeyOwnerValid(publicKeyObject.owner) &&
+    isAccountPublicKeyValid(publicKeyObject.publicKeyPem)
+}
+
+function isAccountPublicKeyIdValid (id: string) {
+  return isActivityPubUrlValid(id)
+}
+
+function isAccountTypeValid (type: string) {
+  return type === 'Person' || type === 'Application'
+}
+
+function isAccountPublicKeyOwnerValid (owner: string) {
+  return isActivityPubUrlValid(owner)
+}
+
+function isAccountPublicKeyValid (publicKey: string) {
+  return exists(publicKey) &&
+    typeof publicKey === 'string' &&
+    publicKey.startsWith('-----BEGIN PUBLIC KEY-----') &&
+    publicKey.endsWith('-----END PUBLIC KEY-----')
+}
+
+function isAccountIdValid (id: string) {
+  return isActivityPubUrlValid(id)
+}
+
+function isAccountFollowingValid (id: string) {
+  return isActivityPubUrlValid(id)
+}
+
+function isAccountFollowersValid (id: string) {
+  return isActivityPubUrlValid(id)
+}
+
+function isAccountInboxValid (inbox: string) {
+  return isActivityPubUrlValid(inbox)
+}
+
+function isAccountOutboxValid (outbox: string) {
+  return isActivityPubUrlValid(outbox)
+}
+
+function isAccountNameValid (name: string) {
+  return isUserUsernameValid(name)
+}
+
+function isAccountPreferredUsernameValid (preferredUsername: string) {
+  return isAccountNameValid(preferredUsername)
+}
+
+function isAccountUrlValid (url: string) {
+  return isActivityPubUrlValid(url)
+}
+
+function isAccountPrivateKeyValid (privateKey: string) {
+  return exists(privateKey) &&
+    typeof privateKey === 'string' &&
+    privateKey.startsWith('-----BEGIN RSA PRIVATE KEY-----') &&
+    privateKey.endsWith('-----END RSA PRIVATE KEY-----')
+}
+
+function isRemoteAccountValid (remoteAccount: any) {
+  return isAccountIdValid(remoteAccount.id) &&
+    isUUIDValid(remoteAccount.uuid) &&
+    isAccountTypeValid(remoteAccount.type) &&
+    isAccountFollowingValid(remoteAccount.following) &&
+    isAccountFollowersValid(remoteAccount.followers) &&
+    isAccountInboxValid(remoteAccount.inbox) &&
+    isAccountOutboxValid(remoteAccount.outbox) &&
+    isAccountPreferredUsernameValid(remoteAccount.preferredUsername) &&
+    isAccountUrlValid(remoteAccount.url) &&
+    isAccountPublicKeyObjectValid(remoteAccount.publicKey) &&
+    isAccountEndpointsObjectValid(remoteAccount.endpoint)
+}
+
+function isAccountFollowingCountValid (value: string) {
+  return exists(value) && validator.isInt('' + value, { min: 0 })
+}
+
+function isAccountFollowersCountValid (value: string) {
+  return exists(value) && validator.isInt('' + value, { min: 0 })
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  isAccountEndpointsObjectValid,
+  isAccountSharedInboxValid,
+  isAccountPublicKeyObjectValid,
+  isAccountPublicKeyIdValid,
+  isAccountTypeValid,
+  isAccountPublicKeyOwnerValid,
+  isAccountPublicKeyValid,
+  isAccountIdValid,
+  isAccountFollowingValid,
+  isAccountFollowersValid,
+  isAccountInboxValid,
+  isAccountOutboxValid,
+  isAccountPreferredUsernameValid,
+  isAccountUrlValid,
+  isAccountPrivateKeyValid,
+  isRemoteAccountValid,
+  isAccountFollowingCountValid,
+  isAccountFollowersCountValid,
+  isAccountNameValid
+}
diff --git a/server/helpers/custom-validators/activitypub/index.ts b/server/helpers/custom-validators/activitypub/index.ts
new file mode 100644
index 000000000..800f0ddf3
--- /dev/null
+++ b/server/helpers/custom-validators/activitypub/index.ts
@@ -0,0 +1,4 @@
+export * from './account'
+export * from './signature'
+export * from './misc'
+export * from './videos'
diff --git a/server/helpers/custom-validators/activitypub/misc.ts b/server/helpers/custom-validators/activitypub/misc.ts
new file mode 100644
index 000000000..806d33483
--- /dev/null
+++ b/server/helpers/custom-validators/activitypub/misc.ts
@@ -0,0 +1,17 @@
+import { exists } from '../misc'
+
+function isActivityPubUrlValid (url: string) {
+  const isURLOptions = {
+    require_host: true,
+    require_tld: true,
+    require_protocol: true,
+    require_valid_protocol: true,
+    protocols: [ 'http', 'https' ]
+  }
+
+  return exists(url) && validator.isURL(url, isURLOptions)
+}
+
+export {
+  isActivityPubUrlValid
+}
diff --git a/server/helpers/custom-validators/activitypub/signature.ts b/server/helpers/custom-validators/activitypub/signature.ts
new file mode 100644
index 000000000..683ed2b1c
--- /dev/null
+++ b/server/helpers/custom-validators/activitypub/signature.ts
@@ -0,0 +1,22 @@
+import { exists } from '../misc'
+import { isActivityPubUrlValid } from './misc'
+
+function isSignatureTypeValid (signatureType: string) {
+  return exists(signatureType) && signatureType === 'GraphSignature2012'
+}
+
+function isSignatureCreatorValid (signatureCreator: string) {
+  return exists(signatureCreator) && isActivityPubUrlValid(signatureCreator)
+}
+
+function isSignatureValueValid (signatureValue: string) {
+  return exists(signatureValue) && signatureValue.length > 0
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  isSignatureTypeValid,
+  isSignatureCreatorValid,
+  isSignatureValueValid
+}
diff --git a/server/helpers/custom-validators/remote/videos.ts b/server/helpers/custom-validators/activitypub/videos.ts
index e0ffba679..e0ffba679 100644
--- a/server/helpers/custom-validators/remote/videos.ts
+++ b/server/helpers/custom-validators/activitypub/videos.ts
diff --git a/server/helpers/custom-validators/index.ts b/server/helpers/custom-validators/index.ts
index c79982660..869b08870 100644
--- a/server/helpers/custom-validators/index.ts
+++ b/server/helpers/custom-validators/index.ts
@@ -1,4 +1,4 @@
-export * from './remote'
+export * from './activitypub'
 export * from './misc'
 export * from './pods'
 export * from './pods'
diff --git a/server/helpers/custom-validators/remote/index.ts b/server/helpers/custom-validators/remote/index.ts
deleted file mode 100644
index e29a9b767..000000000
--- a/server/helpers/custom-validators/remote/index.ts
+++ /dev/null
@@ -1 +0,0 @@
-export * from './videos'