src/tpm_tpm2_tis.c

   1 /********************************************************************************/
   2 /*                                                                              */
   3 /*                              TPM TIS I/O                                     */
   4 /*                           Written by Stefan Berger                           */
   5 /*                     IBM Thomas J. Watson Research Center                     */
   6 /*                                                                              */
   7 /* (c) Copyright IBM Corporation 2015.                                          */
   8 /*                                                                              */
   9 /* All rights reserved.                                                         */
  10 /*                                                                              */
  11 /* Redistribution and use in source and binary forms, with or without           */
  12 /* modification, are permitted provided that the following conditions are       */
  13 /* met:                                                                         */
  14 /*                                                                              */
  15 /* Redistributions of source code must retain the above copyright notice,       */
  16 /* this list of conditions and the following disclaimer.                        */
  17 /*                                                                              */
  18 /* Redistributions in binary form must reproduce the above copyright            */
  19 /* notice, this list of conditions and the following disclaimer in the          */
  20 /* documentation and/or other materials provided with the distribution.         */
  21 /*                                                                              */
  22 /* Neither the names of the IBM Corporation nor the names of its                */
  23 /* contributors may be used to endorse or promote products derived from         */
  24 /* this software without specific prior written permission.                     */
  25 /*                                                                              */
  26 /* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS          */
  27 /* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT            */
  28 /* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR        */
  29 /* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT         */
  30 /* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,       */
  31 /* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT             */
  32 /* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,        */
  33 /* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY        */
  34 /* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT          */
  35 /* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE        */
  36 /* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.         */
  37 /********************************************************************************/
  38
  39 #include <config.h>
  40
  41 #include <stdint.h>
  42
  43 #include "tpm2/Tpm.h"
  44 #include "tpm2/TpmTypes.h"
  45 #include "tpm2/TpmBuildSwitches.h"
  46 #include "tpm2/_TPM_Hash_Start_fp.h"
  47 #include "tpm2/_TPM_Hash_Data_fp.h"
  48 #include "tpm2/_TPM_Hash_End_fp.h"
  49 #include "tpm2/TpmTcpProtocol.h"
  50 #include "tpm2/Platform_fp.h"
  51 #include "tpm2/Simulator_fp.h"
  52
  53 #define TPM_HAVE_TPM2_DECLARATIONS
  54 #include "tpm_library_intern.h"
  55 #include "tpm_error.h"
  56
  57 TPM_RESULT TPM2_IO_TpmEstablished_Get(TPM_BOOL *tpmEstablished)
  58 {
  59     *tpmEstablished = _rpc__Signal_GetTPMEstablished();
  60
  61     return TPM_SUCCESS;
  62 }
  63
  64 TPM_RESULT TPM2_IO_TpmEstablished_Reset(void)
  65 {
  66     TPM_RESULT ret = TPM_SUCCESS;
  67     struct libtpms_callbacks *cbs = TPMLIB_GetCallbacks();
  68     TPM_MODIFIER_INDICATOR locality = 0;
  69     uint32_t tpm_number = 0;
  70
  71     if (cbs->tpm_io_getlocality) {
  72         cbs->tpm_io_getlocality(&locality, tpm_number);
  73     }
  74
  75     _plat__LocalitySet(locality);
  76
  77     if (locality == 3 || locality == 4) {
  78         _rpc__Signal_ResetTPMEstablished();
  79     } else {
  80         ret = TPM_BAD_LOCALITY;
  81     }
  82
  83     return ret;
  84 }
  85
  86 TPM_RESULT TPM2_IO_Hash_Start(void)
  87 {
  88     _TPM_Hash_Start();
  89
  90     _rpc__Signal_SetTPMEstablished();
  91
  92     return TPM_SUCCESS;
  93 }
  94
  95 TPM_RESULT TPM2_IO_Hash_Data(const unsigned char *data,
  96                              uint32_t data_length)
  97 {
  98     _TPM_Hash_Data(data_length, (unsigned char *)data);
  99
 100     return TPM_SUCCESS;
 101 }
 102
 103 TPM_RESULT TPM2_IO_Hash_End(void)
 104 {
 105     _TPM_Hash_End();
 106
 107     return TPM_SUCCESS;
 108 }