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      1 
      2 /*
      3  * Licensed Materials - Property of IBM
      4  *
      5  * trousers - An open source TCG Software Stack
      6  *
      7  * (C) Copyright International Business Machines Corp. 2004-2007
      8  *
      9  */
     10 
     11 #include <stdlib.h>
     12 #include <stdio.h>
     13 #include <string.h>
     14 
     15 #include "trousers/tss.h"
     16 #include "trousers/trousers.h"
     17 #include "trousers_types.h"
     18 #include "spi_utils.h"
     19 #include "capabilities.h"
     20 #include "tsplog.h"
     21 #include "obj.h"
     22 
     23 
     24 #ifdef TSS_BUILD_TRANSPORT
     25 TSS_RESULT
     26 Transport_ReadCounter(TSS_HCONTEXT       tspContext,          /* in */
     27 		      TSS_COUNTER_ID     idCounter,           /* in */
     28 		      TPM_COUNTER_VALUE* counterValue)        /* out */
     29 {
     30 	TSS_RESULT result;
     31 	UINT32 decLen = 0;
     32 	BYTE *dec = NULL;
     33 	UINT64 offset;
     34 	TCS_HANDLE handlesLen = 0;
     35 	BYTE data[sizeof(UINT32)];
     36 
     37 	if ((result = obj_context_transport_init(tspContext)))
     38 		return result;
     39 
     40 	LogDebugFn("Executing in a transport session");
     41 
     42 	offset = 0;
     43 	Trspi_LoadBlob_UINT32(&offset, idCounter, data);
     44 
     45 	if ((result = obj_context_transport_execute(tspContext, TPM_ORD_ReadCounter, sizeof(data),
     46 						    data, NULL, &handlesLen, NULL, NULL, NULL,
     47 						    &decLen, &dec)))
     48 		return result;
     49 
     50 	offset = 0;
     51 	Trspi_UnloadBlob_COUNTER_VALUE(&offset, dec, counterValue);
     52 
     53 	free(dec);
     54 
     55 	return TSS_SUCCESS;
     56 }
     57 #endif
     58