/*

 * Copyright 2022-2023 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <errno.h>

#include <openssl/err.h>

#include "internal/time.h"

OSSL_TIME ossl_time_now(void)

{

    OSSL_TIME r;

#if defined(_WIN32) && !defined(OPENSSL_SYS_UEFI)

    SYSTEMTIME st;

    union {

        unsigned __int64 ul;

        FILETIME ft;

    } now;

    GetSystemTime(&st);

    SystemTimeToFileTime(&st, &now.ft);

    /* re-bias to 1/1/1970 */

# ifdef  __MINGW32__

    now.ul -= 116444736000000000ULL;

# else

    now.ul -= 116444736000000000UI64;

# endif

    r.t = ((uint64_t)now.ul) * (OSSL_TIME_SECOND / 10000000);

#else   /* defined(_WIN32) */

    struct timeval t;

    if (gettimeofday(&t, NULL) < 0) {

        ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),

                       "calling gettimeofday()");

        return ossl_time_zero();

    }

    if (t.tv_sec <= 0)

        r.t = t.tv_usec <= 0 ? 0 : t.tv_usec * OSSL_TIME_US;

    else

        r.t = ((uint64_t)t.tv_sec * 1000000 + t.tv_usec) * OSSL_TIME_US;

#endif  /* defined(_WIN32) */

    return r;

}