hsm: Add messages for withdrawal signature requests

lightningd/hsm/hsm.c

@@ -563,6 +563,9 @@ static struct io_plan *control_received_req(struct io_conn *conn,
 		sign_funding_tx(master, master->msg_in);
 		return daemon_conn_read_next(conn, master);
 
+	case WIRE_HSMCTL_SIGN_WITHDRAWAL:
+		return daemon_conn_read_next(conn, master);
+
 	case WIRE_HSMCTL_NODE_ANNOUNCEMENT_SIG_REQ:
 		sign_node_announcement(master, master->msg_in);
 		return daemon_conn_read_next(conn, master);
@@ -571,6 +574,7 @@ static struct io_plan *control_received_req(struct io_conn *conn,
 	case WIRE_HSMCTL_HSMFD_ECDH_FD_REPLY:
 	case WIRE_HSMCTL_HSMFD_CHANNELD_REPLY:
 	case WIRE_HSMCTL_SIGN_FUNDING_REPLY:
+	case WIRE_HSMCTL_SIGN_WITHDRAWAL_REPLY:
 	case WIRE_HSMSTATUS_INIT_FAILED:
 	case WIRE_HSMSTATUS_WRITEMSG_FAILED:
 	case WIRE_HSMSTATUS_BAD_REQUEST:

lightningd/hsm/hsm_wire.csv

@@ -58,3 +58,16 @@ hsmctl_node_announcement_sig_req,,announcement,annlen*u8
 
 hsmctl_node_announcement_sig_reply,106
 hsmctl_node_announcement_sig_reply,,signature,secp256k1_ecdsa_signature
+
+# Sign a withdrawal request
+hsmctl_sign_withdrawal,7
+hsmctl_sign_withdrawal,,satoshi_out,8
+hsmctl_sign_withdrawal,,change_out,8
+hsmctl_sign_withdrawal,,change_keyindex,4
+hsmctl_sign_withdrawal,,pkh,20*u8
+hsmctl_sign_withdrawal,,num_inputs,2
+hsmctl_sign_withdrawal,,inputs,num_inputs*struct utxo
+
+hsmctl_sign_withdrawal_reply,107
+hsmctl_sign_withdrawal_reply,,num_sigs,2
+hsmctl_sign_withdrawal_reply,,sig,num_sigs*secp256k1_ecdsa_signature

lightningd/hsm_control.c

@@ -72,6 +72,7 @@ static int hsm_msg(struct subd *hsm, const u8 *msg, const int *fds)
 	case WIRE_HSMCTL_HSMFD_ECDH:
 	case WIRE_HSMCTL_HSMFD_CHANNELD:
 	case WIRE_HSMCTL_SIGN_FUNDING:
+	case WIRE_HSMCTL_SIGN_WITHDRAWAL:
 	case WIRE_HSMCTL_NODE_ANNOUNCEMENT_SIG_REQ:
 
 	/* Replies should be paired to individual requests. */
@@ -79,6 +80,7 @@ static int hsm_msg(struct subd *hsm, const u8 *msg, const int *fds)
 	case WIRE_HSMCTL_HSMFD_CHANNELD_REPLY:
 	case WIRE_HSMCTL_HSMFD_ECDH_FD_REPLY:
 	case WIRE_HSMCTL_SIGN_FUNDING_REPLY:
+	case WIRE_HSMCTL_SIGN_WITHDRAWAL_REPLY:
 	case WIRE_HSMCTL_NODE_ANNOUNCEMENT_SIG_REPLY:
 		errx(1, "HSM gave invalid message %s", hsm_wire_type_name(t));
 	}