/*
 * FreeRTOS V202111.00
 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * https://www.FreeRTOS.org
 * https://github.com/FreeRTOS
 *
 */

/**
 * @file mbedtls_freertos_port.c
 * @brief Implements mbed TLS platform functions for FreeRTOS.
 */

/* FreeRTOS includes. */
#include "FreeRTOS.h"

/* C Library includes. */
#include <string.h> /* memset */

/*-----------------------------------------------------------*/

/**
 * @brief Allocates memory for an array of members.
 *
 * @param[in] nmemb Number of members that need to be allocated.
 * @param[in] size Size of each member.
 *
 * @return Pointer to the beginning of newly allocated memory.
 */
void * mbedtls_platform_calloc( size_t nmemb,
                                size_t size )
{
    size_t totalSize = nmemb * size;
    void * pBuffer = NULL;

    /* Check that neither nmemb nor size were 0. */
    if( totalSize > 0 )
    {
        /* Overflow check. */
        if( ( totalSize / size ) == nmemb )
        {
            pBuffer = pvPortMalloc( totalSize );

            if( pBuffer != NULL )
            {
                ( void ) memset( pBuffer, 0x00, totalSize );
            }
        }
    }

    return pBuffer;
}

/*-----------------------------------------------------------*/

/**
 * @brief Frees the space previously allocated by calloc.
 *
 * @param[in] ptr Pointer to the memory to be freed.
 */
void mbedtls_platform_free( void * ptr )
{
    vPortFree( ptr );
}