feat: add nip45.enabled toggle for COUNT

Author: a-khushal

resources/default-settings.yaml

@@ -53,6 +53,8 @@ nip05:
   domainWhitelist: []
   # Block authors with NIP-05 at these domains
   domainBlacklist: []
+nip45:
+  enabled: true
 network:
   maxPayloadSize: 524288
   # Comment the next line if using CloudFlare proxy

src/@types/settings.ts

@@ -230,6 +230,10 @@ export interface Mirroring {
 
 export type Nip05Mode = 'enabled' | 'passive' | 'disabled'
 
+export interface Nip45Settings {
+  enabled?: boolean
+}
+
 export interface Nip05Settings {
   mode: Nip05Mode
   /**
@@ -260,4 +264,5 @@ export interface Settings {
   limits?: Limits
   mirroring?: Mirroring
   nip05?: Nip05Settings
+  nip45?: Nip45Settings
 }

src/handlers/count-message-handler.ts

@@ -21,6 +21,12 @@ export class CountMessageHandler implements IMessageHandler {
 
   public async handleMessage(message: CountMessage): Promise<void> {
     const queryId = message[1]
+    const countEnabled = this.settings().nip45?.enabled ?? true
+    if (!countEnabled) {
+      this.webSocket.emit(WebSocketAdapterEvent.Message, createClosedMessage(queryId, 'COUNT is disabled by relay configuration'))
+      return
+    }
+
     // Some clients send the same filter more than once.
     // We remove duplicates so we do less DB work.
     const filters = uniqWith(equals, message.slice(2)) as SubscriptionFilter[]