From d0b5c4c4c11a2420e414b6f1d408ec99e64bf85f Mon Sep 17 00:00:00 2001
From: decentclock <decentclock.5uh2k@slmail.me>
Date: Fri, 26 Aug 2022 15:55:43 -0600
Subject: [PATCH] Check that broker and signer are on the same network

---
 signer/src/lib.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/signer/src/lib.rs b/signer/src/lib.rs
index 59b8653..c638102 100644
--- a/signer/src/lib.rs
+++ b/signer/src/lib.rs
@@ -1,5 +1,6 @@
 mod randomstartingtime;
 
+use lightning_signer::bitcoin::blockdata::constants::ChainHash;
 use lightning_signer::node::NodeServices;
 use lightning_signer::persist::Persist;
 use lightning_signer::policy::filter::PolicyFilter;
@@ -16,6 +17,7 @@ use vls_protocol::msgs::{self, read_serial_request_header, write_serial_response
 use vls_protocol::serde_bolt::WireString;
 use vls_protocol_signer::handler::{Handler, RootHandler};
 use vls_protocol_signer::lightning_signer::bitcoin::Network;
+use vls_protocol_signer::lightning_signer::wallet::Wallet;
 
 pub use sphinx_key_parser::MsgDriver;
 pub use sphinx_key_persister::FsPersister;
@@ -95,6 +97,15 @@ pub fn handle(
         _ => {}
     };
 
+    if let Message::HsmdInit(ref m) = message {
+        if ChainHash::using_genesis_block(root_handler.node.network()).as_bytes()
+            != &m.chain_params.0
+        {
+            log::error!("The network setting of CLN and VLS don't match!");
+            panic!("The network setting of CLN and VLS don't match!");
+        }
+    }
+
     if do_log {
         log::info!("VLS msg: {:?}", message);
     }