1 files changed, 62 insertions, 0 deletions
diff --git a/FreeRTOS-Plus/Test/CBMC/proofs/parsing/ProcessReceivedTCPPacket/ProcessReceivedTCPPacket_harness.c b/FreeRTOS-Plus/Test/CBMC/proofs/parsing/ProcessReceivedTCPPacket/ProcessReceivedTCPPacket_harness.c
new file mode 100644
index 000000000..bf84ecf05
--- /dev/null
+++ b/FreeRTOS-Plus/Test/CBMC/proofs/parsing/ProcessReceivedTCPPacket/ProcessReceivedTCPPacket_harness.c
@@ -0,0 +1,62 @@
+/* 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 "FreeRTOS_Stream_Buffer.h"
+
+/* This proof assumes FreeRTOS_socket, pxTCPSocketLookup and 
+pxGetNetworkBufferWithDescriptor are implemented correctly.
+
+It also assumes prvSingleStepTCPHeaderOptions, prvCheckOptions, prvTCPPrepareSend,
+prvTCPHandleState and prvTCPReturnPacket are correct. These functions are
+proved to be correct separately. */
+
+/* Implementation of safe malloc */
+void *safeMalloc(size_t xWantedSize ){
+	if(xWantedSize == 0){
+		return NULL;
+	}
+	uint8_t byte;
+	return byte ? malloc(xWantedSize) : NULL;
+}
+
+/* Abstraction of FreeRTOS_socket */
+Socket_t FreeRTOS_socket( BaseType_t xDomain, BaseType_t xType, BaseType_t xProtocol) {
+	return safeMalloc(sizeof(FreeRTOS_Socket_t));
+}
+
+/* Abstraction of pxTCPSocketLookup */
+FreeRTOS_Socket_t *pxTCPSocketLookup(uint32_t ulLocalIP, UBaseType_t uxLocalPort, uint32_t ulRemoteIP, UBaseType_t uxRemotePort) {
+	FreeRTOS_Socket_t * xRetSocket = safeMalloc(sizeof(FreeRTOS_Socket_t));
+	if (xRetSocket) {
+		xRetSocket->u.xTCP.txStream = safeMalloc(sizeof(StreamBuffer_t));
+		xRetSocket->u.xTCP.pxPeerSocket = safeMalloc(sizeof(StreamBuffer_t));
+	}	
+	return xRetSocket;
+}
+
+/* Abstraction of pxGetNetworkBufferWithDescriptor */
+NetworkBufferDescriptor_t *pxGetNetworkBufferWithDescriptor( size_t xRequestedSizeBytes, TickType_t xBlockTimeTicks ){
+	NetworkBufferDescriptor_t *pxNetworkBuffer = safeMalloc(sizeof(NetworkBufferDescriptor_t));
+	if(pxNetworkBuffer) {
+		pxNetworkBuffer->pucEthernetBuffer = safeMalloc(xRequestedSizeBytes);
+		__CPROVER_assume(pxNetworkBuffer->xDataLength == ipSIZE_OF_ETH_HEADER + sizeof(int32_t));
+	}	
+	return pxNetworkBuffer;
+}
+
+void harness() {
+	NetworkBufferDescriptor_t *pxNetworkBuffer = safeMalloc(sizeof(NetworkBufferDescriptor_t));
+	if (pxNetworkBuffer) {
+		pxNetworkBuffer->pucEthernetBuffer = safeMalloc(sizeof(TCPPacket_t));
+	}
+	if (pxNetworkBuffer && pxNetworkBuffer->pucEthernetBuffer) {
+		xProcessReceivedTCPPacket(pxNetworkBuffer);
+
+	}
+
+}