| /********************************************************************************/ |
| /* */ |
| /* 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); |
| } |