fix: Make broadcast owner and subscriber hidden contacts for each other (#7856)

src/chat.rs

@@ -257,7 +257,11 @@ impl ChatId {
                         ChatIdBlocked::get_for_contact(context, contact_id, create_blocked)
                             .await
                             .map(|chat| chat.id)?;
-                    ContactId::scaleup_origin(context, &[contact_id], Origin::CreateChat).await?;
+                    if create_blocked != Blocked::Yes {
+                        info!(context, "Scale up origin of {contact_id} to CreateChat.");
+                        ContactId::scaleup_origin(context, &[contact_id], Origin::CreateChat)
+                            .await?;
+                    }
                     chat_id
                 } else {
                     warn!(

src/chat/chat_tests.rs

@@ -4835,6 +4835,22 @@ async fn test_sync_create_group() -> Result<()> {
     Ok(())
 }
 
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn test_broadcast_contacts_are_hidden() -> Result<()> {
+    let mut tcm = TestContextManager::new();
+    let alice = &tcm.alice().await;
+    let bob = &tcm.bob().await;
+
+    let alice_chat_id = create_broadcast(alice, "Channel".to_string()).await?;
+    let qr = get_securejoin_qr(alice, Some(alice_chat_id)).await?;
+    tcm.exec_securejoin_qr(bob, alice, &qr).await;
+    send_text_msg(alice, alice_chat_id, "hello".to_string()).await?;
+    bob.recv_msg(&alice.pop_sent_msg().await).await;
+    assert_eq!(Contact::get_all(alice, 0, None).await?.len(), 0);
+    assert_eq!(Contact::get_all(bob, 0, None).await?.len(), 0);
+    Ok(())
+}
+
 /// Tests sending JPEG image with .png extension.
 ///
 /// This is a regression test, previously sending failed

src/mimefactory.rs

@@ -456,9 +456,16 @@ impl MimeFactory {
                 .filter(|id| *id != ContactId::SELF)
                 .collect();
             if recipient_ids.len() == 1
-                && msg.param.get_cmd() != SystemMessage::MemberRemovedFromGroup
+                && !matches!(
-                && chat.typ != Chattype::OutBroadcast
+                    msg.param.get_cmd(),
+                    SystemMessage::MemberRemovedFromGroup | SystemMessage::SecurejoinMessage
+                )
+                && !matches!(chat.typ, Chattype::OutBroadcast | Chattype::InBroadcast)
             {
+                info!(
+                    context,
+                    "Scale up origin of {} recipients to OutgoingTo.", chat.id
+                );
                 ContactId::scaleup_origin(context, &recipient_ids, Origin::OutgoingTo).await?;
             }
 

src/securejoin.rs

@@ -641,15 +641,12 @@ pub(crate) async fn handle_securejoin_handshake(
                 mark_contact_id_as_verified(context, contact_id, Some(ContactId::SELF)).await?;
             }
             contact_id.regossip_keys(context).await?;
-            ContactId::scaleup_origin(context, &[contact_id], Origin::SecurejoinInvited).await?;
             // for setup-contact, make Alice's one-to-one chat with Bob visible
             // (secure-join-information are shown in the group chat)
             if grpid.is_empty() {
                 ChatId::create_for_contact(context, contact_id).await?;
             }
-            context.emit_event(EventType::ContactsChanged(Some(contact_id)));
             if let Some(joining_chat_id) = joining_chat_id {
-                // Join group.
                 chat::add_contact_to_chat_ex(context, Nosync, joining_chat_id, contact_id, true)
                     .await?;
 
@@ -659,6 +656,10 @@ pub(crate) async fn handle_securejoin_handshake(
                     // We don't use the membership consistency algorithm for broadcast channels,
                     // so, sync the memberlist when adding a contact
                     chat.sync_contacts(context).await.log_err(context).ok();
+                } else {
+                    ContactId::scaleup_origin(context, &[contact_id], Origin::SecurejoinInvited)
+                        .await?;
+                    context.emit_event(EventType::ContactsChanged(Some(contact_id)));
                 }
 
                 inviter_progress(context, contact_id, joining_chat_id, chat.typ)?;

src/securejoin/bob.rs

@@ -49,8 +49,14 @@ pub(super) async fn start_protocol(context: &Context, invite: QrInvite) -> Resul
     // receive_imf.
     let private_chat_id = private_chat_id(context, &invite).await?;
 
-    ContactId::scaleup_origin(context, &[invite.contact_id()], Origin::SecurejoinJoined).await?;
+    match invite {
+        QrInvite::Group { .. } | QrInvite::Contact { .. } => {
+            ContactId::scaleup_origin(context, &[invite.contact_id()], Origin::SecurejoinJoined)
+                .await?;
             context.emit_event(EventType::ContactsChanged(None));
+        }
+        QrInvite::Broadcast { .. } => {}
+    }
 
     let has_key = context
         .sql