libtpmtss: Support for TSS2 v2 libraries
[strongswan.git] / 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 * Register plugins if built statically
22 */
23 #ifdef STATIC_PLUGIN_CONSTRUCTORS
24 #include "plugin_constructors.c"
25 #endif
26
27 /**
28 * Described in header.
29 */
30 bool libtpmtss_init(void)
31 {
32 return tpm_tss_tss2_init();
33 }
34
35 /**
36 * Described in header.
37 */
38 void libtpmtss_deinit(void)
39 {
40 tpm_tss_tss2_deinit();
41 }
42
43 typedef tpm_tss_t*(*tpm_tss_create)(void);
44
45 /**
46 * See header.
47 */
48 tpm_tss_t *tpm_tss_probe(tpm_version_t version)
49 {
50 tpm_tss_create stacks[] = {
51 tpm_tss_tss2_create,
52 tpm_tss_trousers_create,
53 };
54 tpm_tss_t *tpm;
55 int i;
56
57 for (i = 0; i < countof(stacks); i++)
58 {
59 tpm = stacks[i]();
60 if (tpm)
61 {
62 if (version == TPM_VERSION_ANY || version == tpm->get_version(tpm))
63 {
64 return tpm;
65 }
66 }
67 }
68 return NULL;
69 }