src/libtpmtss/tpm_tss.c

   1 /*
   2  * Copyright (C) 2016 Andreas Steffen
   3  * HSR Hochschule fuer Technik Rapperswil
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; either version 2 of the License, or (at your
   8  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * for more details.
  14  */
  15
  16 #include "tpm_tss.h"
  17 #include "tpm_tss_tss2.h"
  18 #include "tpm_tss_trousers.h"
  19
  20 typedef tpm_tss_t*(*tpm_tss_create)();
  21
  22 /**
  23  * See header.
  24  */
  25 tpm_tss_t *tpm_tss_probe(tpm_version_t version)
  26 {
  27         tpm_tss_create stacks[] = {
  28                 tpm_tss_tss2_create,
  29                 tpm_tss_trousers_create,
  30         };
  31         tpm_tss_t *tpm;
  32         int i;
  33
  34         for (i = 0; i < countof(stacks); i++)
  35         {
  36                 tpm = stacks[i]();
  37                 if (tpm)
  38                 {
  39                         if (version == TPM_VERSION_ANY || version == tpm->get_version(tpm))
  40                         {
  41                                 return tpm;
  42                         }
  43                 }
  44         }
  45         return NULL;
  46 }