1 /*
2 * FreeRTOS memory safety proofs with CBMC.
3 * Copyright (C) 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person
6 * obtaining a copy of this software and associated documentation
7 * files (the "Software"), to deal in the Software without
8 * restriction, including without limitation the rights to use, copy,
9 * modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
20 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
21 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * http://aws.amazon.com/freertos
26 * http://www.FreeRTOS.org
27 */
28
29 #include <stdint.h>
30
31 /* FreeRTOS includes. */
32 #include "FreeRTOS.h"
33 #include "task.h"
34
35 /* FreeRTOS+TCP includes. */
36 #include "FreeRTOS_IP.h"
37 #include "FreeRTOS_IP_Private.h"
38
39 #include "cbmc.h"
40
41 /* Abstraction of FreeRTOS_FindEndPointOnMAC */
FreeRTOS_FindEndPointOnMAC(const MACAddress_t * pxMACAddress,const NetworkInterface_t * pxInterface)42 NetworkEndPoint_t * FreeRTOS_FindEndPointOnMAC( const MACAddress_t * pxMACAddress,
43 const NetworkInterface_t * pxInterface )
44 {
45 NetworkEndPoint_t * pxEndPoint;
46
47 __CPROVER_assert( pxMACAddress != NULL, "pxMACAddress != NULL" );
48
49 /* pxInterface can be NULL. */
50
51 pxEndPoint = safeMalloc( sizeof( pxEndPoint ) );
52
53 return pxEndPoint;
54 }
55
56 /* The harness test proceeds to call eConsiderFrameForProcessing with an unconstrained buffer */
harness()57 void harness()
58 {
59 BaseType_t uBuffSize;
60
61 /* Assume minimum and maximum buffer size expected */
62 __CPROVER_assume( uBuffSize >= sizeof( EthernetHeader_t ) && uBuffSize < ipconfigNETWORK_MTU );
63 const uint8_t * const pucEthernetBuffer = safeMalloc( uBuffSize );
64
65 eConsiderFrameForProcessing( pucEthernetBuffer );
66 }
67
