/* -*-c-*-
 *  Query Mbed TLS compile time configurations from mbedtls_config.h
 *
 *  Copyright The Mbed TLS Contributors
 *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 */

#include "mbedtls/build_info.h"

#include "query_config.h"

#include "mbedtls/platform.h"
#include <string.h>

/* Work around https://github.com/Mbed-TLS/TF-PSA-Crypto/issues/393 */
#if defined(MBEDTLS_HAVE_TIME)
#include <mbedtls/platform_time.h>
#endif

INCLUDE_HEADERS

/*
 * Helper macros to convert a macro or its expansion into a string
 * WARNING: This does not work for expanding function-like macros. However,
 * Mbed TLS does not currently have configuration options used in this fashion.
 */
#define MACRO_EXPANSION_TO_STR(macro)   MACRO_NAME_TO_STR(macro)
#define MACRO_NAME_TO_STR(macro)                                        \
    mbedtls_printf("%s", strlen( #macro "") > 0 ? #macro "\n" : "")

#define STRINGIFY(macro)  #macro
#define OUTPUT_MACRO_NAME_VALUE(macro) mbedtls_printf( #macro "%s\n",   \
                                                       (STRINGIFY(macro) "")[0] != 0 ? "=" STRINGIFY( \
                                                           macro) : "")

#if defined(_MSC_VER)
/*
 * Visual Studio throws the warning 4003 because many Mbed TLS feature macros
 * are defined empty. This means that from the preprocessor's point of view
 * the macro MBEDTLS_EXPANSION_TO_STR is being invoked without arguments as
 * some macros expand to nothing. We suppress that specific warning to get a
 * clean build and to ensure that tests treating warnings as errors do not
 * fail.
 */
#pragma warning(push)
#pragma warning(disable:4003)
#endif /* _MSC_VER */

int query_config(const char *config)
{
    CHECK_CONFIG /* If the symbol is not found, return an error */
    return 1;
}

void list_config(void)
{
    LIST_CONFIG
}
#if defined(_MSC_VER)
#pragma warning(pop)
#endif /* _MSC_VER */