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559fe48c RB |
1 | /* |
2 | * Copyrigth (C) 2012 Reto Buerki | |
3 | * Copyright (C) 2012 Adrian-Ken Rueegsegger | |
4 | * Hochschule fuer Technik Rapperswil | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | * for more details. | |
15 | */ | |
16 | ||
8e95bf45 RB |
17 | #include <tkm/client.h> |
18 | #include <tkm/constants.h> | |
19 | ||
c38459d7 RB |
20 | #include "tkm.h" |
21 | #include "tkm_nonceg.h" | |
22 | ||
559fe48c RB |
23 | typedef struct private_tkm_nonceg_t private_tkm_nonceg_t; |
24 | ||
25 | /** | |
26 | * Private data of a tkm_nonceg_t object. | |
27 | */ | |
28 | struct private_tkm_nonceg_t { | |
29 | ||
30 | /** | |
31 | * Public tkm_nonceg_t interface. | |
32 | */ | |
33 | tkm_nonceg_t public; | |
34 | ||
c38459d7 RB |
35 | /** |
36 | * Context id. | |
37 | */ | |
38 | nc_id_type context_id; | |
39 | ||
559fe48c RB |
40 | }; |
41 | ||
42 | METHOD(nonce_gen_t, get_nonce, bool, | |
43 | private_tkm_nonceg_t *this, size_t size, u_int8_t *buffer) | |
44 | { | |
8e95bf45 | 45 | nonce_type nonce; |
c38459d7 | 46 | if (ike_nc_create(this->context_id, size, &nonce) != TKM_OK) |
8e95bf45 RB |
47 | { |
48 | return FALSE; | |
49 | } | |
50 | ||
51 | memcpy(buffer, &nonce.data, size); | |
559fe48c RB |
52 | return TRUE; |
53 | } | |
54 | ||
55 | METHOD(nonce_gen_t, allocate_nonce, bool, | |
56 | private_tkm_nonceg_t *this, size_t size, chunk_t *chunk) | |
57 | { | |
58 | *chunk = chunk_alloc(size); | |
59 | return get_nonce(this, chunk->len, chunk->ptr); | |
60 | } | |
61 | ||
62 | METHOD(nonce_gen_t, destroy, void, | |
63 | private_tkm_nonceg_t *this) | |
64 | { | |
65 | free(this); | |
66 | } | |
67 | ||
601de9f3 AKR |
68 | METHOD(tkm_nonceg_t, get_id, nc_id_type, |
69 | private_tkm_nonceg_t *this) | |
70 | { | |
71 | return this->context_id; | |
72 | } | |
73 | ||
559fe48c RB |
74 | /* |
75 | * Described in header. | |
76 | */ | |
77 | tkm_nonceg_t *tkm_nonceg_create() | |
78 | { | |
79 | private_tkm_nonceg_t *this; | |
80 | ||
81 | INIT(this, | |
82 | .public = { | |
83 | .nonce_gen = { | |
84 | .get_nonce = _get_nonce, | |
85 | .allocate_nonce = _allocate_nonce, | |
86 | .destroy = _destroy, | |
87 | }, | |
601de9f3 | 88 | .get_id = _get_id, |
559fe48c | 89 | }, |
c38459d7 | 90 | .context_id = tkm->idmgr->acquire_id(tkm->idmgr, TKM_CTX_NONCE), |
559fe48c RB |
91 | ); |
92 | ||
c38459d7 RB |
93 | if (!this->context_id) |
94 | { | |
95 | free(this); | |
96 | return NULL; | |
97 | } | |
98 | ||
559fe48c RB |
99 | return &this->public; |
100 | } |