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/********************************************************************************/
/* */
/* Command Audit */
/* Written by Ken Goldman */
/* IBM Thomas J. Watson Research Center */
/* $Id: AuditCommands.c 1490 2019-07-26 21:13:22Z kgoldman $ */
/* */
/* Licenses and Notices */
/* */
/* 1. Copyright Licenses: */
/* */
/* - Trusted Computing Group (TCG) grants to the user of the source code in */
/* this specification (the "Source Code") a worldwide, irrevocable, */
/* nonexclusive, royalty free, copyright license to reproduce, create */
/* derivative works, distribute, display and perform the Source Code and */
/* derivative works thereof, and to grant others the rights granted herein. */
/* */
/* - The TCG grants to the user of the other parts of the specification */
/* (other than the Source Code) the rights to reproduce, distribute, */
/* display, and perform the specification solely for the purpose of */
/* developing products based on such documents. */
/* */
/* 2. Source Code Distribution Conditions: */
/* */
/* - Redistributions of Source Code must retain the above copyright licenses, */
/* this list of conditions and the following disclaimers. */
/* */
/* - Redistributions in binary form must reproduce the above copyright */
/* licenses, this list of conditions and the following disclaimers in the */
/* documentation and/or other materials provided with the distribution. */
/* */
/* 3. Disclaimers: */
/* */
/* - THE COPYRIGHT LICENSES SET FORTH ABOVE DO NOT REPRESENT ANY FORM OF */
/* LICENSE OR WAIVER, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, WITH */
/* RESPECT TO PATENT RIGHTS HELD BY TCG MEMBERS (OR OTHER THIRD PARTIES) */
/* THAT MAY BE NECESSARY TO IMPLEMENT THIS SPECIFICATION OR OTHERWISE. */
/* Contact TCG Administration (admin@trustedcomputinggroup.org) for */
/* information on specification licensing rights available through TCG */
/* membership agreements. */
/* */
/* - THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO EXPRESS OR IMPLIED */
/* WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR */
/* FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, COMPLETENESS, OR */
/* NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS, OR ANY WARRANTY */
/* OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. */
/* */
/* - Without limitation, TCG and its members and licensors disclaim all */
/* liability, including liability for infringement of any proprietary */
/* rights, relating to use of information in this specification and to the */
/* implementation of this specification, and TCG disclaims all liability for */
/* cost of procurement of substitute goods or services, lost profits, loss */
/* of use, loss of data or any incidental, consequential, direct, indirect, */
/* or special damages, whether under contract, tort, warranty or otherwise, */
/* arising in any way out of use or reliance upon this specification or any */
/* information herein. */
/* */
/* (c) Copyright IBM Corp. and others, 2016 - 2018 */
/* */
/********************************************************************************/
#include "Tpm.h"
#include "SetCommandCodeAuditStatus_fp.h"
#if CC_SetCommandCodeAuditStatus // Conditional expansion of this file
TPM_RC
TPM2_SetCommandCodeAuditStatus(
SetCommandCodeAuditStatus_In *in // IN: input parameter list
)
{
// The command needs NV update. Check if NV is available.
// A TPM_RC_NV_UNAVAILABLE or TPM_RC_NV_RATE error may be returned at
// this point
RETURN_IF_NV_IS_NOT_AVAILABLE;
// Internal Data Update
// Update hash algorithm
if(in->auditAlg != TPM_ALG_NULL && in->auditAlg != gp.auditHashAlg)
{
// Can't change the algorithm and command list at the same time
if(in->setList.count != 0 || in->clearList.count != 0)
return TPM_RCS_VALUE + RC_SetCommandCodeAuditStatus_auditAlg;
// Change the hash algorithm for audit
gp.auditHashAlg = in->auditAlg;
// Set the digest size to a unique value that indicates that the digest
// algorithm has been changed. The size will be cleared to zero in the
// command audit processing on exit.
gr.commandAuditDigest.t.size = 1;
// Save the change of command audit data (this sets g_updateNV so that NV
// will be updated on exit.)
NV_SYNC_PERSISTENT(auditHashAlg);
}
else
{
UINT32 i;
BOOL changed = FALSE;
// Process set list
for(i = 0; i < in->setList.count; i++)
// If change is made in CommandAuditSet, set changed flag
if(CommandAuditSet(in->setList.commandCodes[i]))
changed = TRUE;
// Process clear list
for(i = 0; i < in->clearList.count; i++)
// If change is made in CommandAuditClear, set changed flag
if(CommandAuditClear(in->clearList.commandCodes[i]))
changed = TRUE;
// if change was made to command list, update NV
if(changed)
// this sets g_updateNV so that NV will be updated on exit.
NV_SYNC_PERSISTENT(auditCommands);
}
return TPM_RC_SUCCESS;
}
#endif // CC_SetCommandCodeAuditStatus
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