Add call to ReadyChannel in splicing flow

Author: ksedgwic

channeld/channeld.c

@@ -1517,6 +1517,7 @@ static u8 *send_commit_part(struct peer *peer,
 				 peer->channel, &peer->remote_per_commit,
 				 peer->next_index[REMOTE], REMOTE,
 				 splice_amnt, remote_splice_amnt);
+
 	htlc_sigs =
 	    calc_commitsigs(tmpctx, peer, txs, funding_wscript, htlc_map,
 			    peer->next_index[REMOTE], &commit_sig);
@@ -3450,6 +3451,39 @@ static struct inflight *inflights_new(struct peer *peer)
 	return inf;
 }
 
+static void update_hsmd_with_splice(struct peer *peer, struct inflight *inflight)
+{
+	u8 *msg;
+
+	// These aren't allowed to change, so we don't need to gather them
+	u8 *local_upfront_shutdown_script = NULL;
+	u32 * local_upfront_shutdown_wallet_index = NULL;
+	u8 *remote_upfront_shutdown_script = NULL;
+
+	// FIXME - the push_value needs to reflect what is owed to the non-opener
+	struct amount_msat push_value = AMOUNT_MSAT(0);
+
+	msg = towire_hsmd_ready_channel(
+		NULL,
+		peer->channel->opener == LOCAL,
+		inflight->amnt,
+		push_value,
+		&inflight->outpoint.txid,
+		inflight->outpoint.n,
+		peer->channel->config[LOCAL].to_self_delay,
+		local_upfront_shutdown_script,
+		local_upfront_shutdown_wallet_index,
+		&peer->channel->basepoints[REMOTE],
+		&peer->channel->funding_pubkey[REMOTE],
+		peer->channel->config[REMOTE].to_self_delay,
+		remote_upfront_shutdown_script,
+		peer->channel->type);
+	msg = (u8 *) hsm_req(tmpctx, take(msg));
+	if (!fromwire_hsmd_ready_channel_reply(msg))
+		status_failed(STATUS_FAIL_HSM_IO, "Bad ready_channel_reply %s",
+			      tal_hex(tmpctx, msg));
+}
+
 /* ACCEPTER side of the splice. Here we handle all the accepter's steps for the
  * splice. Since the channel must be in STFU mode we block the daemon here until
  * the splice is finished or aborted. */
@@ -3586,6 +3620,8 @@ static void splice_accepter(struct peer *peer, const u8 *inmsg)
 	new_inflight->last_tx = NULL;
 	new_inflight->i_am_initiator = false;
 
+	update_hsmd_with_splice(peer, new_inflight);
+
 	update_view_from_inflights(peer);
 
 	peer->splice_state->count++;
@@ -3820,6 +3856,8 @@ static void splice_initiator_user_finalized(struct peer *peer)
 	new_inflight->last_tx = NULL;
 	new_inflight->i_am_initiator = true;
 
+	update_hsmd_with_splice(peer, new_inflight);
+
 	update_view_from_inflights(peer);
 
 	peer->splice_state->count++;