From 3a2146cb0372fc884220acd528793ecad3eed1e8 Mon Sep 17 00:00:00 2001
From: akwizgran <michael@briarproject.org>
Date: Mon, 1 Mar 2021 16:46:08 +0000
Subject: [PATCH] Don't advertise support for disappearing messages unless flag
 is enabled.

---
 .../briarproject/briar/messaging/MessagingModule.java    | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/briar-core/src/main/java/org/briarproject/briar/messaging/MessagingModule.java b/briar-core/src/main/java/org/briarproject/briar/messaging/MessagingModule.java
index a36c8452e..4776d0f80 100644
--- a/briar-core/src/main/java/org/briarproject/briar/messaging/MessagingModule.java
+++ b/briar-core/src/main/java/org/briarproject/briar/messaging/MessagingModule.java
@@ -1,5 +1,6 @@
 package org.briarproject.briar.messaging;
 
+import org.briarproject.bramble.api.FeatureFlags;
 import org.briarproject.bramble.api.cleanup.CleanupManager;
 import org.briarproject.bramble.api.contact.ContactManager;
 import org.briarproject.bramble.api.data.BdfReaderFactory;
@@ -56,15 +57,19 @@ public class MessagingModule {
 			ContactManager contactManager, ValidationManager validationManager,
 			ConversationManager conversationManager,
 			ClientVersioningManager clientVersioningManager,
-			CleanupManager cleanupManager,
+			CleanupManager cleanupManager, FeatureFlags featureFlags,
 			MessagingManagerImpl messagingManager) {
 		lifecycleManager.registerOpenDatabaseHook(messagingManager);
 		contactManager.registerContactHook(messagingManager);
 		validationManager.registerIncomingMessageHook(CLIENT_ID, MAJOR_VERSION,
 				messagingManager);
 		conversationManager.registerConversationClient(messagingManager);
+		// Don't advertise support for disappearing messages unless the
+		// feature flag is enabled
+		int minorVersion = featureFlags.shouldEnableDisappearingMessages()
+				? MINOR_VERSION : 2;
 		clientVersioningManager.registerClient(CLIENT_ID, MAJOR_VERSION,
-				MINOR_VERSION, messagingManager);
+				minorVersion, messagingManager);
 		cleanupManager.registerCleanupHook(CLIENT_ID, MAJOR_VERSION,
 				messagingManager);
 		return messagingManager;