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Diffstat (limited to 'src/tpm2/AuditCommands.c')
| -rw-r--r-- | src/tpm2/AuditCommands.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/src/tpm2/AuditCommands.c b/src/tpm2/AuditCommands.c new file mode 100644 index 0000000..60960bb --- /dev/null +++ b/src/tpm2/AuditCommands.c @@ -0,0 +1,112 @@ +/********************************************************************************/ +/* */ +/* 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 |