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 /**
  21  * Described in header.
  22  */
  23 void libtpmtss_init(void)
  24 {
  25         /* empty */
  26 }
  27
  28 typedef tpm_tss_t*(*tpm_tss_create)();
  29
  30 /**
  31  * See header.
  32  */
  33 tpm_tss_t *tpm_tss_probe(tpm_version_t version)
  34 {
  35         tpm_tss_create stacks[] = {
  36                 tpm_tss_tss2_create,
  37                 tpm_tss_trousers_create,
  38         };
  39         tpm_tss_t *tpm;
  40         int i;
  41
  42         for (i = 0; i < countof(stacks); i++)
  43         {
  44                 tpm = stacks[i]();
  45                 if (tpm)
  46                 {
  47                         if (version == TPM_VERSION_ANY || version == tpm->get_version(tpm))
  48                         {
  49                                 return tpm;
  50                         }
  51                 }
  52         }
  53         return NULL;
  54 }