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/********************************************************************************/
/* */
/* Marshalling and unmarshalling of state */
/* Written by Stefan Berger */
/* IBM Thomas J. Watson Research Center */
/* */
/* (c) Copyright IBM Corporation 2017,2018. */
/* */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or without */
/* modification, are permitted provided that the following conditions are */
/* met: */
/* */
/* Redistributions of source code must retain the above copyright notice, */
/* this list of conditions and the following disclaimer. */
/* */
/* Redistributions in binary form must reproduce the above copyright */
/* notice, this list of conditions and the following disclaimer in the */
/* documentation and/or other materials provided with the distribution. */
/* */
/* Neither the names of the IBM Corporation nor the names of its */
/* contributors may be used to endorse or promote products derived from */
/* this software without specific prior written permission. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */
/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */
/* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */
/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY */
/* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */
/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/********************************************************************************/
#include <stdlib.h>
#include "config.h"
#include "StateMarshal.h"
#include "Volatile.h"
#define TPM_HAVE_TPM2_DECLARATIONS
#include "tpm_library_intern.h"
#include "tpm_nvfilename.h"
#include "tpm_error.h"
#include "tpm_memory.h"
UINT16
VolatileSave(BYTE **buffer, INT32 *size)
{
return VolatileState_Save(buffer, size);
}
TPM_RC
VolatileLoad(BOOL *restored)
{
TPM_RC rc = TPM_RC_SUCCESS;
#ifdef TPM_LIBTPMS_CALLBACKS
unsigned char *data = NULL;
uint32_t length = 0;
struct libtpms_callbacks *cbs = TPMLIB_GetCallbacks();
TPM_RESULT ret = TPM_SUCCESS;
bool is_empty_state;
*restored = FALSE;
/* try to get state blob set via TPMLIB_SetState() */
GetCachedState(TPMLIB_STATE_VOLATILE, &data, &length, &is_empty_state);
if (is_empty_state)
return rc;
if (!data && cbs->tpm_nvram_loaddata) {
uint32_t tpm_number = 0;
const char *name = TPM_VOLATILESTATE_NAME;
ret = cbs->tpm_nvram_loaddata(&data, &length, tpm_number, name);
}
if (data && ret == TPM_SUCCESS) {
unsigned char *p = data;
rc = VolatileState_Load(&data, (INT32 *)&length);
/*
* if this failed, VolatileState_Load will have started
* failure mode.
*/
free(p);
*restored = (rc == 0);
}
#endif /* TPM_LIBTPMS_CALLBACKS */
return rc;
}
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