Function json_openchannel_update

lightningd/dual_open_control.c:2506–2562

static struct command_result *json_openchannel_update(struct command *cmd,
						       const char *buffer,
						       const jsmntok_t *obj UNNEEDED,
						       const jsmntok_t *params)
{
	struct wally_psbt *psbt;
	struct channel_id *cid;
	struct channel *channel;
	u8 *msg;

	if (!param(cmd, buffer, params,
		   p_req("channel_id", param_channel_id, &cid),
		   p_req("psbt", param_psbt, &psbt),
		   NULL))
		return command_param_failed();

	channel = channel_by_cid(cmd->ld, cid);
	if (!channel)
		return command_fail(cmd, FUNDING_UNKNOWN_CHANNEL,
				    "Unknown channel %s",
				    type_to_string(tmpctx, struct channel_id,
						   cid));
	if (!channel->owner)
		return command_fail(cmd, FUNDING_PEER_NOT_CONNECTED,
				    "Peer not connected");

	if (!channel->open_attempt)
		return command_fail(cmd, FUNDING_STATE_INVALID,
				    "Channel open not in progress");

	if (channel->open_attempt->cmd)
		return command_fail(cmd, FUNDING_STATE_INVALID,
				    "Another openchannel command"
				    " is in progress");

	/* Add serials to PSBT */
	psbt_add_serials(psbt, TX_INITIATOR);

	/* We require the PSBT to meet certain criteria such as
	 * extra, proprietary fields (`serial_id`s) or
	 * to have a `redeemscripts` iff the inputs are P2SH.
	 *
	 * Since this is externally provided, we confirm that
	 * they've done the right thing / haven't lost any required info.
	 */
	if (!psbt_has_required_fields(psbt))
		return command_fail(cmd, FUNDING_PSBT_INVALID,
				    "PSBT is missing required fields %s",
				    type_to_string(tmpctx, struct wally_psbt,
						   psbt));

	channel->open_attempt->cmd = cmd;

	msg = towire_dualopend_psbt_updated(NULL, psbt);
	subd_send_msg(channel->owner, take(msg));
	return command_still_pending(cmd);
}