/*
 * FreeRTOS memory safety proofs with CBMC.
 * Copyright (C) 2022 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.
 *
 * http://aws.amazon.com/freertos
 * http://www.FreeRTOS.org
 */

/* Standard includes. */
#include <stdint.h>

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

/* FreeRTOS+TCP includes. */
#include "FreeRTOS_IP.h"
#include "FreeRTOS_Sockets.h"
#include "FreeRTOS_IP_Private.h"
#include "FreeRTOS_UDP_IP.h"
#include "FreeRTOS_DHCP.h"
#include "FreeRTOS_BitConfig.h"

/* CBMC includes. */
#include "cbmc.h"

#define DHCPv6_PAYLOAD_LENGTH_MAX    ( 100 )

BaseType_t __CPROVER_file_local_FreeRTOS_DHCPv6_c_prvDHCPv6Analyse( struct xNetworkEndPoint * pxEndPoint,
                                                                    const uint8_t * pucAnswer,
                                                                    size_t uxTotalLength,
                                                                    DHCPMessage_IPv6_t * pxDHCPMessage );

void harness()
{
    size_t uxTotalLength;
    BaseType_t xResult;
    NetworkEndPoint_t * pxNetworkEndPoint_Temp;
    DHCPMessage_IPv6_t * pxDHCPMessage;
    uint8_t * pucAnswer;

    pxNetworkEndPoint_Temp = safeMalloc( sizeof( NetworkEndPoint_t ) );
    __CPROVER_assume( pxNetworkEndPoint_Temp != NULL );

    pxDHCPMessage = safeMalloc( sizeof( DHCPMessage_IPv6_t ) );
    __CPROVER_assume( pxDHCPMessage != NULL );

    /* Limit the total length to be less than DHCPv6_PAYLOAD_LENGTH_MAX to decrease the verification time. */
    __CPROVER_assume( ( uxTotalLength > 0 ) &&
                      ( uxTotalLength <= DHCPv6_PAYLOAD_LENGTH_MAX ) );

    pucAnswer = safeMalloc( uxTotalLength );
    __CPROVER_assume( pucAnswer != NULL );

    xResult = __CPROVER_file_local_FreeRTOS_DHCPv6_c_prvDHCPv6Analyse( pxNetworkEndPoint_Temp, pucAnswer, uxTotalLength, pxDHCPMessage );
}