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/********************************************************************************/
/* */
/* PCR_Extend */
/* 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. */
/********************************************************************************/
/*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <ibmtss/tss.h>
#include <ibmtss/tssutils.h>
#include <ibmtss/tssresponsecode.h>
#include <ibmtss/Unmarshal_fp.h>
static void printUsage(void);
extern int tssUtilsVerbose;
int main(int argc, char *argv[])
{
TPM_RC rc = 0;
int i; /* argc iterator */
uint32_t algs; /* hash algorithm iterator */
TSS_CONTEXT *tssContext = NULL;
PCR_Extend_In in;
TPMI_DH_PCR pcrHandle = IMPLEMENTATION_PCR;
const char *dataString = NULL;
const char *datafilename = NULL;
setvbuf(stdout, 0, _IONBF, 0); /* output may be going through pipe to log file */
TSS_SetProperty(NULL, TPM_TRACE_LEVEL, "1");
tssUtilsVerbose = FALSE;
/* Table 100 - Definition of TPML_DIGEST_VALUES Structure */
in.digests.count = 0xffffffff; /* flag for default hash algorithm */
/* command line argument defaults */
for (i=1 ; (i<argc) && (rc == 0) ; i++) {
if (strcmp(argv[i],"-ha") == 0) {
i++;
if (i < argc) {
sscanf(argv[i],"%u", &pcrHandle);
}
else {
printf("Missing parameter for -ha\n");
printUsage();
}
}
else if (strcmp(argv[i],"-halg") == 0) {
/* Table 100 - Definition of TPML_DIGEST_VALUES Structure */
if (in.digests.count == 0xffffffff) { /* first time */
in.digests.count = 1; /* extend a bank */
}
else {
in.digests.count++; /* extend a bank */
}
if (in.digests.count > HASH_COUNT) {
printf("Too many -halg specifiers, %u permitted\n", HASH_COUNT);
printUsage();
}
i++;
if (i < argc) {
/* Table 100 - Definition of TPML_DIGEST_VALUES Structure digests */
/* Table 71 - Definition of TPMT_HA Structure <IN/OUT> */
/* Table 59 - Definition of (TPM_ALG_ID) TPMI_ALG_HASH Type hashAlg */
if (strcmp(argv[i],"sha1") == 0) {
in.digests.digests[in.digests.count-1].hashAlg = TPM_ALG_SHA1;
}
else if (strcmp(argv[i],"sha256") == 0) {
in.digests.digests[in.digests.count-1].hashAlg = TPM_ALG_SHA256;
}
else if (strcmp(argv[i],"sha384") == 0) {
in.digests.digests[in.digests.count-1].hashAlg = TPM_ALG_SHA384;
}
else if (strcmp(argv[i],"sha512") == 0) {
in.digests.digests[in.digests.count-1].hashAlg = TPM_ALG_SHA512;
}
else {
printf("Bad parameter %s for -halg\n", argv[i]);
printUsage();
}
}
else {
printf("-halg option needs a value\n");
printUsage();
}
}
else if (strcmp(argv[i],"-ic") == 0) {
i++;
if (i < argc) {
dataString = argv[i];
}
else {
printf("-ic option needs a value\n");
printUsage();
}
}
else if (strcmp(argv[i], "-if") == 0) {
i++;
if (i < argc) {
datafilename = argv[i];
} else {
printf("-if option needs a value\n");
printUsage();
}
}
else if (strcmp(argv[i],"-h") == 0) {
printUsage();
}
else if (strcmp(argv[i],"-v") == 0) {
tssUtilsVerbose = TRUE;
TSS_SetProperty(NULL, TPM_TRACE_LEVEL, "2");
}
else {
printf("\n%s is not a valid option\n", argv[i]);
printUsage();
}
}
if (pcrHandle >= IMPLEMENTATION_PCR) {
printf("Missing or bad PCR handle parameter -ha\n");
printUsage();
}
if ((dataString == NULL) && (datafilename == NULL)) {
printf("Data string or data file must be specified\n");
printUsage();
}
if ((dataString != NULL) && (datafilename != NULL)) {
printf("Data string and data file cannot both be specified\n");
printUsage();
}
if ((dataString != NULL) && (strlen(dataString) > sizeof(TPMU_HA))) {
printf("Data length greater than maximum hash size %lu bytes\n",
(unsigned long)sizeof(TPMU_HA));
printUsage();
}
/* handle default hash algorithm */
if (in.digests.count == 0xffffffff) { /* if none specified */
in.digests.count = 1;
in.digests.digests[0].hashAlg = TPM_ALG_SHA256;
}
if (rc == 0) {
in.pcrHandle = pcrHandle;
/* Table 70 - Definition of TPMU_HA Union <IN/OUT, S> */
/* append zero padding to maximum hash algorithm length */
for (algs = 0 ; algs < in.digests.count ; algs++) {
memset((uint8_t *)&in.digests.digests[algs].digest, 0, sizeof(TPMU_HA));
}
}
if (rc == 0) {
if (dataString != NULL) {
if (tssUtilsVerbose) printf("Extending %u bytes from stream into %u banks\n",
(unsigned int)strlen(dataString), in.digests.count);
for (algs = 0 ; algs < in.digests.count ; algs++) {
memcpy((uint8_t *)&in.digests.digests[algs].digest,
dataString, strlen(dataString));
}
}
}
if (datafilename != NULL) {
unsigned char *fileData = NULL;
size_t length;
if (rc == 0) {
rc = TSS_File_ReadBinaryFile(&fileData, /* freed @1 */
&length, datafilename);
}
if (rc == 0) {
if (length > sizeof(TPMU_HA)) {
printf("Data length greater than maximum hash size %lu bytes\n",
(unsigned long)sizeof(TPMU_HA));
rc = EXIT_FAILURE;
}
}
if (rc == 0) {
if (tssUtilsVerbose) printf("Extending %u bytes from file into %u banks\n",
(unsigned int)length, in.digests.count);
for (algs = 0 ; algs < in.digests.count ; algs++) {
memcpy((uint8_t *)&in.digests.digests[algs].digest, fileData, length);
}
}
free(fileData); /* @1 */
}
/* Start a TSS context */
if (rc == 0) {
rc = TSS_Create(&tssContext);
}
/* call TSS to execute the command */
if (rc == 0) {
rc = TSS_Execute(tssContext,
NULL,
(COMMAND_PARAMETERS *)&in,
NULL,
TPM_CC_PCR_Extend,
TPM_RS_PW, NULL, 0,
TPM_RH_NULL, NULL, 0);
}
{
TPM_RC rc1 = TSS_Delete(tssContext);
if (rc == 0) {
rc = rc1;
}
}
if (rc == 0) {
if (tssUtilsVerbose) printf("pcrextend: success\n");
}
else {
const char *msg;
const char *submsg;
const char *num;
printf("pcrextend: failed, rc %08x\n", rc);
TSS_ResponseCode_toString(&msg, &submsg, &num, rc);
printf("%s%s%s\n", msg, submsg, num);
rc = EXIT_FAILURE;
}
return rc;
}
static void printUsage(void)
{
printf("\n");
printf("pcrextend\n");
printf("\n");
printf("Runs TPM2_PCR_Extend\n");
printf("\n");
printf("\t-ha\tpcr handle\n");
printf("\t[-halg\t(sha1, sha256, sha384, sha512) (default sha256)]\n");
printf("\t\t-halg may be specified more than once\n");
printf("\n");
printf("\t-ic\tdata string, 0 pad appended to halg length\n");
printf("\t-if\tdata file, 0 pad appended to halg length\n");
exit(1);
}
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