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/********************************************************************************/
/* */
/* Common TPM 1.2 and TPM 2.0 TSS Authorization */
/* Written by Ken Goldman */
/* IBM Thomas J. Watson Research Center */
/* */
/* (c) Copyright IBM Corporation 2015 - 2019. */
/* */
/* 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. */
/********************************************************************************/
/* This layer handles command and response packet authorization parameters. */
#include <stdio.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#ifdef TPM_POSIX
#include <netinet/in.h>
#endif
#ifdef TPM_WINDOWS
#include <winsock2.h>
#endif
#include <ibmtss/tsserror.h>
#include <ibmtss/tssprint.h>
#include <ibmtss/tssutils.h>
#include <ibmtss/tssmarshal.h>
#include <ibmtss/Unmarshal_fp.h>
#include <ibmtss/tsstransmit.h>
#include "tssproperties.h"
#include <ibmtss/tssresponsecode.h>
#include "tssauth.h"
extern int tssVerbose;
extern int tssVverbose;
/* TSS_AuthCreate() allocates and initializes a TSS_AUTH_CONTEXT */
TPM_RC TSS_AuthCreate(TSS_AUTH_CONTEXT **tssAuthContext)
{
TPM_RC rc = 0;
if (rc == 0) {
rc = TSS_Malloc((uint8_t **)tssAuthContext, sizeof(TSS_AUTH_CONTEXT));
}
if (rc == 0) {
TSS_InitAuthContext(*tssAuthContext);
}
return rc;
}
/* TSS_InitAuthContext() sets initial values for an allocated TSS_AUTH_CONTEXT */
void TSS_InitAuthContext(TSS_AUTH_CONTEXT *tssAuthContext)
{
memset(tssAuthContext->commandBuffer, 0, sizeof(tssAuthContext->commandBuffer));
memset(tssAuthContext->responseBuffer, 0, sizeof(tssAuthContext->responseBuffer));
tssAuthContext->commandText = NULL;
tssAuthContext->commandCode = 0;
tssAuthContext->responseCode = 0;
tssAuthContext->commandHandleCount = 0;
tssAuthContext->responseHandleCount = 0;
tssAuthContext->authCount = 0;
tssAuthContext->commandSize = 0;
tssAuthContext->cpBufferSize = 0;
tssAuthContext->cpBuffer = NULL;
tssAuthContext->responseSize = 0;
tssAuthContext->marshalInFunction = NULL;
tssAuthContext->unmarshalOutFunction = NULL;
#ifndef TPM_TSS_NOCMDCHECK
tssAuthContext->unmarshalInFunction = NULL;
#endif
#ifdef TPM_TPM12
tssAuthContext->sessionNumber = 0xffff; /* no encrypt sessions */
tssAuthContext->encAuthOffset0 = 0;
tssAuthContext->encAuthOffset1 = 0;
#endif
return;
}
/* TSS_AuthDelete() re-initializes and then frees an allocated TSS_AUTH_CONTEXT */
TPM_RC TSS_AuthDelete(TSS_AUTH_CONTEXT *tssAuthContext)
{
if (tssAuthContext != NULL) {
TSS_InitAuthContext(tssAuthContext);
free(tssAuthContext);
}
return 0;
}
TPM_CC TSS_GetCommandCode(TSS_AUTH_CONTEXT *tssAuthContext)
{
TPM_CC commandCode = tssAuthContext->commandCode;
return commandCode;
}
TPM_RC TSS_GetCpBuffer(TSS_AUTH_CONTEXT *tssAuthContext,
uint32_t *cpBufferSize,
uint8_t **cpBuffer)
{
*cpBufferSize = tssAuthContext->cpBufferSize;
*cpBuffer = tssAuthContext->cpBuffer;
return 0;
}
/* TSS_GetCommandHandleCount() returns the number of handles in the command area */
TPM_RC TSS_GetCommandHandleCount(TSS_AUTH_CONTEXT *tssAuthContext,
size_t *commandHandleCount)
{
*commandHandleCount = tssAuthContext->commandHandleCount;
return 0;
}
TPM_RC TSS_AuthExecute(TSS_CONTEXT *tssContext)
{
TPM_RC rc = 0;
if (tssVverbose) printf("TSS_AuthExecute: Executing %s\n",
tssContext->tssAuthContext->commandText);
/* transmit the command and receive the response. Normally returns the TPM response code. */
if (rc == 0) {
rc = TSS_Transmit(tssContext,
tssContext->tssAuthContext->responseBuffer,
&tssContext->tssAuthContext->responseSize,
tssContext->tssAuthContext->commandBuffer,
tssContext->tssAuthContext->commandSize,
tssContext->tssAuthContext->commandText);
}
return rc;
}
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