Function json_xkeysend

plugins/xpay/xpay.c:3003–3098

}

static struct command_result *json_xkeysend(struct command *cmd,
					    const char *buf,
					    const jsmntok_t *params)
{
	struct xpay *xpay = xpay_of(cmd->plugin);
	struct amount_msat *msat, *maxfee;
	struct pubkey *dst;
	u32 *maxdelay;
	unsigned int *retryfor;
	struct payment *payment;
	struct json_escape *label;
	const char *err;
	struct preimage preimage;
	struct sha256 payment_hash;
	const char **layers;
	struct tlv_field *extra_fields;
	u8 *tlvs;
	struct out_req *req;

	if (!param_check(cmd, buf, params,
			 p_req("destination", param_pubkey, &dst),
			 p_req("amount_msat", param_msat, &msat),
			 p_opt("label", param_label, &label),
			 p_opt("maxfee", param_msat, &maxfee),
			 p_opt("layers", param_string_array, &layers),
			 p_opt_def("retry_for", param_number, &retryfor, 60),
			 p_opt_def("maxdelay", param_number, &maxdelay, 2016),
			 p_opt("extratlvs", param_extra_tlvs, &extra_fields),
			 NULL))
		return command_param_failed();

	randbytes(&preimage, sizeof(preimage));
	sha256(&payment_hash, &preimage, sizeof(preimage));

	/* We explicitly prohibit self-keysends */
	if (pubkey_eq(&xpay->local_id, dst)) {
		return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
				    "We are the destination. Keysend cannot be used to send funds to yourself");
	}

	payment = new_payment(cmd, cmd,
			      *retryfor,
			      *maxdelay,
			      layers,
			      NULL, /* NULL invstring is the marker of a keysend vs pay */
			      dst,
			      &payment_hash,
			      *msat,
			      NULL,
			      maxfee,
			      NULL, NULL,
			      // 22 is the Rust-Lightning default and the
			      // highest minimum CLTV we know of.
			      22,
			      label,
			      NULL,
			      false,
			      false,