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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); | |
624178fe AKR |
59 | if (get_nonce(this, chunk->len, chunk->ptr)) |
60 | { | |
61 | tkm->chunk_map->insert(tkm->chunk_map, chunk, this->context_id); | |
62 | return TRUE; | |
63 | } | |
64 | return FALSE; | |
559fe48c RB |
65 | } |
66 | ||
67 | METHOD(nonce_gen_t, destroy, void, | |
68 | private_tkm_nonceg_t *this) | |
69 | { | |
70 | free(this); | |
71 | } | |
72 | ||
601de9f3 AKR |
73 | METHOD(tkm_nonceg_t, get_id, nc_id_type, |
74 | private_tkm_nonceg_t *this) | |
75 | { | |
76 | return this->context_id; | |
77 | } | |
78 | ||
559fe48c RB |
79 | /* |
80 | * Described in header. | |
81 | */ | |
82 | tkm_nonceg_t *tkm_nonceg_create() | |
83 | { | |
84 | private_tkm_nonceg_t *this; | |
85 | ||
86 | INIT(this, | |
87 | .public = { | |
88 | .nonce_gen = { | |
89 | .get_nonce = _get_nonce, | |
90 | .allocate_nonce = _allocate_nonce, | |
91 | .destroy = _destroy, | |
92 | }, | |
601de9f3 | 93 | .get_id = _get_id, |
559fe48c | 94 | }, |
c38459d7 | 95 | .context_id = tkm->idmgr->acquire_id(tkm->idmgr, TKM_CTX_NONCE), |
559fe48c RB |
96 | ); |
97 | ||
c38459d7 RB |
98 | if (!this->context_id) |
99 | { | |
100 | free(this); | |
101 | return NULL; | |
102 | } | |
103 | ||
559fe48c RB |
104 | return &this->public; |
105 | } |