refactored PCR functionality
[strongswan.git] / src / libimcv / plugins / imc_attestation / imc_attestation_state.c
1 /*
2 * Copyright (C) 2011 Sansar Choinyambuu
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 "imc_attestation_state.h"
17
18 #include <utils/linked_list.h>
19 #include <debug.h>
20
21 typedef struct private_imc_attestation_state_t private_imc_attestation_state_t;
22
23 /**
24 * Private data of an imc_attestation_state_t object.
25 */
26 struct private_imc_attestation_state_t {
27
28 /**
29 * Public members of imc_attestation_state_t
30 */
31 imc_attestation_state_t public;
32
33 /**
34 * TNCCS connection ID
35 */
36 TNC_ConnectionID connection_id;
37
38 /**
39 * TNCCS connection state
40 */
41 TNC_ConnectionState state;
42
43 /**
44 * PTS object
45 */
46 pts_t *pts;
47
48 /**
49 * PTS Component Evidence list
50 */
51 linked_list_t *list;
52
53 };
54
55 METHOD(imc_state_t, get_connection_id, TNC_ConnectionID,
56 private_imc_attestation_state_t *this)
57 {
58 return this->connection_id;
59 }
60
61 METHOD(imc_state_t, change_state, void,
62 private_imc_attestation_state_t *this, TNC_ConnectionState new_state)
63 {
64 this->state = new_state;
65 }
66
67
68 METHOD(imc_state_t, destroy, void,
69 private_imc_attestation_state_t *this)
70 {
71 this->pts->destroy(this->pts);
72 this->list->destroy_offset(this->list, offsetof(pts_comp_evidence_t, destroy));
73 free(this);
74 }
75
76 METHOD(imc_attestation_state_t, get_pts, pts_t*,
77 private_imc_attestation_state_t *this)
78 {
79 return this->pts;
80 }
81
82 METHOD(imc_attestation_state_t, add_evidence, void,
83 private_imc_attestation_state_t *this, pts_comp_evidence_t *evidence)
84 {
85 this->list->insert_last(this->list, evidence);
86 }
87
88 METHOD(imc_attestation_state_t, next_evidence, bool,
89 private_imc_attestation_state_t *this, pts_comp_evidence_t **evid)
90 {
91 return this->list->remove_first(this->list, (void**)evid) == SUCCESS;
92 }
93
94 /**
95 * Described in header.
96 */
97 imc_state_t *imc_attestation_state_create(TNC_ConnectionID connection_id)
98 {
99 private_imc_attestation_state_t *this;
100 char *platform_info;
101
102 INIT(this,
103 .public = {
104 .interface = {
105 .get_connection_id = _get_connection_id,
106 .change_state = _change_state,
107 .destroy = _destroy,
108 },
109 .get_pts = _get_pts,
110 .add_evidence = _add_evidence,
111 .next_evidence = _next_evidence,
112 },
113 .connection_id = connection_id,
114 .state = TNC_CONNECTION_STATE_CREATE,
115 .pts = pts_create(TRUE),
116 .list = linked_list_create(),
117 );
118
119 platform_info = lib->settings->get_str(lib->settings,
120 "libimcv.plugins.imc-attestation.platform_info", NULL);
121 if (platform_info)
122 {
123 this->pts->set_platform_info(this->pts, platform_info);
124 }
125
126 return &this->public.interface;
127 }
128
129