Function json_signinvoice

lightningd/invoice.c:1969–2015

AUTODATA(json_command, &preapprovekeysend_command);

static struct command_result *json_signinvoice(struct command *cmd,
						 const char *buffer,
						 const jsmntok_t *obj UNNEEDED,
						 const jsmntok_t *params)
{
	const char *invstring;
	struct json_stream *response;
	struct bolt11 *b11;
	struct sha256 hash;
	const u5 *sig;
	bool have_n;
	const char *fail;

	if (!param_check(cmd, buffer, params,
			 p_req("invstring", param_invstring, &invstring),
			 NULL))
		return command_param_failed();

	b11 = bolt11_decode_nosig(cmd, invstring, cmd->ld->our_features,
				  NULL, chainparams, &hash, &sig, &have_n,
				  &fail);

	if (!b11)
		return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
				    "Unparsable invoice '%s': %s",
				    invstring, fail);

	/* This adds the signature */
	char *b11enc = bolt11_encode(cmd, b11, have_n,
				     hsm_sign_b11, cmd->ld);

        /* BOLT #11:
         * A writer:
         *...
         *    - MUST include either exactly one `d` or exactly one `h` field.
         */
	if (!b11->description && !b11->description_hash)
		return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
				    "Missing description in invoice");

	if (command_check_only(cmd))
		return command_check_done(cmd);

	response = json_stream_success(cmd);
	json_add_invstring(response, b11enc);
	return command_success(cmd, response);
}

static const struct json_command signinvoice_command = {
	"signinvoice",