Function check_offer_payable

plugins/xpay/xpay.c:2150–2186

}

static struct command_result *check_offer_payable(struct command *cmd,
						  const char *offerstr,
						  const struct amount_msat *msat)
{
	const char *err;
	struct tlv_offer *b12offer = offer_decode(tmpctx,
						  offerstr,
						  strlen(offerstr),
						  plugin_feature_set(cmd->plugin),
						  chainparams, &err);
	if (!b12offer)
		return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
				    "Invalid bolt12 offer: %s", err);
	/* We will only one-shot if we know amount!  (FIXME: Convert!) */
	if (b12offer->offer_currency)
		return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
				    "Cannot pay offer in different currency %.*s",
				    (int)tal_bytelen(b12offer->offer_currency),
				    b12offer->offer_currency);
	if (b12offer->offer_amount) {
		if (msat && !amount_msat_eq(amount_msat(*b12offer->offer_amount), *msat)) {
			return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
					    "Offer amount is %s, you tried to pay %s",
					    fmt_amount_msat(tmpctx, amount_msat(*b12offer->offer_amount)),
					    fmt_amount_msat(tmpctx, *msat));
		}
	} else {
		if (!msat)
			return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
					    "Must specify amount for this offer");
	}
	if (offer_recurrence(b12offer))
		return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
				    "Cannot xpay recurring offers");

	return NULL;
}

static struct command_result *
check_offer_sendamount_payable(struct command *cmd, const char *offerstr)