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d95624c5d6
* move CBMC proofs to FreeRTOS+ directory * Failing proofs corrected * ParseDNSReply proof added back * removed queue_init.h from -Plus/Test Co-authored-by: Yuhui Zheng <10982575+yuhui-zheng@users.noreply.github.com>
73 lines
3.3 KiB
C
73 lines
3.3 KiB
C
/*
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* FreeRTOS memory safety proofs with CBMC.
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* Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* http://aws.amazon.com/freertos
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* http://www.FreeRTOS.org
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*/
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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#include "queue.h"
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/* FreeRTOS+TCP includes. */
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#include "FreeRTOS_IP.h"
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#include "FreeRTOS_IP_Private.h"
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#include "FreeRTOS_TCP_IP.h"
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#include "../../utility/memory_assignments.c"
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/* This proof assumes that prvTCPPrepareSend and prvTCPReturnPacket are correct.
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These functions are proved to be correct separately. */
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BaseType_t publicTCPHandleState( FreeRTOS_Socket_t *pxSocket, NetworkBufferDescriptor_t **ppxNetworkBuffer );
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void harness() {
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FreeRTOS_Socket_t *pxSocket = ensure_FreeRTOS_Socket_t_is_allocated();
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size_t socketSize = sizeof(FreeRTOS_Socket_t);
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if (ensure_memory_is_valid(pxSocket, socketSize)) {
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/* ucOptionLength is the number of valid bytes in ulOptionsData[].
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ulOptionsData[] is initialized as uint32_t ulOptionsData[ipSIZE_TCP_OPTIONS/sizeof(uint32_t)].
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This assumption is required for a memcpy function that copies uxOptionsLength
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data from pxTCPHeader->ucOptdata to pxTCPWindow->ulOptionsData.*/
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__CPROVER_assume(pxSocket->u.xTCP.xTCPWindow.ucOptionLength == sizeof(uint32_t) * ipSIZE_TCP_OPTIONS/sizeof(uint32_t));
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/* uxRxWinSize is initialized as size_t. This assumption is required to terminate `while(uxWinSize > 0xfffful)` loop.*/
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__CPROVER_assume(pxSocket->u.xTCP.uxRxWinSize >= 0 && pxSocket->u.xTCP.uxRxWinSize <= sizeof(size_t));
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/* uxRxWinSize is initialized as uint16_t. This assumption is required to terminate `while(uxWinSize > 0xfffful)` loop.*/
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__CPROVER_assume(pxSocket->u.xTCP.usInitMSS == sizeof(uint16_t));
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}
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NetworkBufferDescriptor_t *pxNetworkBuffer = ensure_FreeRTOS_NetworkBuffer_is_allocated();
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size_t bufferSize = sizeof(NetworkBufferDescriptor_t);
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if(ensure_memory_is_valid(pxNetworkBuffer, bufferSize)) {
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pxNetworkBuffer->pucEthernetBuffer = safeMalloc(sizeof(TCPPacket_t));
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}
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if (ensure_memory_is_valid(pxSocket, socketSize) &&
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ensure_memory_is_valid(pxNetworkBuffer, bufferSize) &&
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ensure_memory_is_valid(pxNetworkBuffer->pucEthernetBuffer, sizeof(TCPPacket_t)) &&
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ensure_memory_is_valid(pxSocket->u.xTCP.pxPeerSocket, socketSize)) {
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publicTCPHandleState(pxSocket, &pxNetworkBuffer);
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}
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}
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