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/*
* FreeRTOS memory safety proofs with CBMC.
* Copyright (C) 2019 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
*/
/* FreeRTOS includes. */
#include "FreeRTOS.h"
#include "queue.h"
/* FreeRTOS+TCP includes. */
#include "FreeRTOS_IP.h"
#include "FreeRTOS_IP_Private.h"
#include "FreeRTOS_TCP_IP.h"
#include "../../utility/memory_assignments.c"
/* This proof assumes that pxDuplicateNetworkBufferWithDescriptor is implemented correctly. */
void publicTCPReturnPacket( FreeRTOS_Socket_t *pxSocket, NetworkBufferDescriptor_t *pxNetworkBuffer, uint32_t ulLen, BaseType_t xReleaseAfterSend );
/* Abstraction of pxDuplicateNetworkBufferWithDescriptor*/
NetworkBufferDescriptor_t *pxDuplicateNetworkBufferWithDescriptor( NetworkBufferDescriptor_t * const pxNetworkBuffer,
BaseType_t xNewLength ) {
NetworkBufferDescriptor_t *pxNetworkBuffer = ensure_FreeRTOS_NetworkBuffer_is_allocated();
if (ensure_memory_is_valid(pxNetworkBuffer, sizeof(*pxNetworkBuffer))) {
pxNetworkBuffer->pucEthernetBuffer = safeMalloc(sizeof(TCPPacket_t));
__CPROVER_assume(pxNetworkBuffer->pucEthernetBuffer);
}
return pxNetworkBuffer;
}
void harness() {
FreeRTOS_Socket_t *pxSocket = ensure_FreeRTOS_Socket_t_is_allocated();
NetworkBufferDescriptor_t *pxNetworkBuffer = ensure_FreeRTOS_NetworkBuffer_is_allocated();
if (ensure_memory_is_valid(pxNetworkBuffer, sizeof(*pxNetworkBuffer))) {
pxNetworkBuffer->pucEthernetBuffer = safeMalloc(sizeof(TCPPacket_t));
__CPROVER_assume(pxNetworkBuffer->pucEthernetBuffer);
}
uint32_t ulLen;
BaseType_t xReleaseAfterSend;
/* The code does not expect both of these to be equal to NULL at the same time. */
__CPROVER_assume(pxSocket != NULL || pxNetworkBuffer != NULL);
publicTCPReturnPacket(pxSocket, pxNetworkBuffer, ulLen, xReleaseAfterSend);
}
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