1 files changed, 76 insertions, 0 deletions
diff --git a/FreeRTOS-Plus/Test/CBMC/proofs/ARP/ARP_FreeRTOS_OutputARPRequest/OutputARPRequest_harness.c b/FreeRTOS-Plus/Test/CBMC/proofs/ARP/ARP_FreeRTOS_OutputARPRequest/OutputARPRequest_harness.c
new file mode 100644
index 000000000..472f6b1e1
--- /dev/null
+++ b/FreeRTOS-Plus/Test/CBMC/proofs/ARP/ARP_FreeRTOS_OutputARPRequest/OutputARPRequest_harness.c
@@ -0,0 +1,76 @@
+/*
+ * 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_ARP.h"
+
+
+ARPPacket_t xARPPacket;
+NetworkBufferDescriptor_t xNetworkBuffer;
+
+/* STUB!
+ * We assume that the pxGetNetworkBufferWithDescriptor function is
+ * implemented correctly and returns a valid data structure.
+ * This is the mock to mimic the expected behavior.
+ * If this allocation fails, this might invalidate the proof.
+ * FreeRTOS_OutputARPRequest calls pxGetNetworkBufferWithDescriptor
+ * to get a NetworkBufferDescriptor. Then it calls vARPGenerateRequestPacket
+ * passing this buffer along in the function call. vARPGenerateRequestPacket
+ * casts the pointer xNetworkBuffer.pucEthernetBuffer into an ARPPacket_t pointer
+ * and writes a complete ARPPacket to it. Therefore the buffer has to be at least of the size
+ * of an ARPPacket to gurantee memory safety.
+ */
+NetworkBufferDescriptor_t *pxGetNetworkBufferWithDescriptor( size_t xRequestedSizeBytes, TickType_t xBlockTimeTicks ){
+	#ifdef CBMC_PROOF_ASSUMPTION_HOLDS
+		#ifdef ipconfigETHERNET_MINIMUM_PACKET_BYTES
+			xNetworkBuffer.pucEthernetBuffer = malloc(ipconfigETHERNET_MINIMUM_PACKET_BYTES);
+		#else
+			xNetworkBuffer.pucEthernetBuffer = malloc(xRequestedSizeBytes);
+		#endif
+	#else
+		uint32_t malloc_size;
+		__CPROVER_assert(!__CPROVER_overflow_mult(2, xRequestedSizeBytes));
+		__CPROVER_assume(malloc_size > 0 && malloc_size < 2 * xRequestedSizeBytes);
+		xNetworkBuffer.pucEthernetBuffer = malloc(malloc_size);
+	#endif
+	xNetworkBuffer.xDataLength = xRequestedSizeBytes;
+	return &xNetworkBuffer;
+}
+
+
+void harness()
+{
+	uint32_t ulIPAddress;
+	FreeRTOS_OutputARPRequest( ulIPAddress );
+}