reintegrated two-sim branch providing SIM card plugin API
[strongswan.git] / src / charon / plugins / eap_sim_file / eap_sim_file_card.c
1 /*
2 * Copyright (C) 2008 Martin Willi
3 * 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 * $Id$
16 */
17
18 #include "eap_sim_file_card.h"
19
20 typedef struct private_eap_sim_file_card_t private_eap_sim_file_card_t;
21
22 /**
23 * Private data of an eap_sim_file_card_t object.
24 */
25 struct private_eap_sim_file_card_t {
26
27 /**
28 * Public eap_sim_file_card_t interface.
29 */
30 eap_sim_file_card_t public;
31
32 /**
33 * IMSI, is ID_ANY for file implementation
34 */
35 identification_t *imsi;
36
37 /**
38 * source of triplets
39 */
40 eap_sim_file_triplets_t *triplets;
41 };
42
43 #include <daemon.h>
44
45 /**
46 * Implementation of sim_card_t.get_triplet
47 */
48 static bool get_triplet(private_eap_sim_file_card_t *this,
49 char *rand, char *sres, char *kc)
50 {
51 enumerator_t *enumerator;
52 identification_t *id;
53 char *c_rand, *c_sres, *c_kc;
54
55
56 DBG1(DBG_CFG, "looking for rand: %b", rand, RAND_LEN);
57
58 enumerator = this->triplets->create_enumerator(this->triplets);
59 while (enumerator->enumerate(enumerator, &id, &c_rand, &c_sres, &c_kc))
60 {
61 DBG1(DBG_CFG, "found triplet: %b %b %b", c_rand, RAND_LEN, c_sres, SRES_LEN, c_kc, KC_LEN);
62 if (memeq(c_rand, rand, RAND_LEN))
63 {
64 memcpy(sres, c_sres, SRES_LEN);
65 memcpy(kc, c_kc, KC_LEN);
66 enumerator->destroy(enumerator);
67 return TRUE;
68 }
69 }
70 enumerator->destroy(enumerator);
71 return FALSE;
72 }
73
74 /**
75 * Implementation of sim_card_t.get_imsi
76 */
77 static identification_t* get_imsi(private_eap_sim_file_card_t *this)
78 {
79 return this->imsi;
80 }
81
82 /**
83 * Implementation of eap_sim_file_card_t.destroy.
84 */
85 static void destroy(private_eap_sim_file_card_t *this)
86 {
87 this->imsi->destroy(this->imsi);
88 free(this);
89 }
90
91 /**
92 * See header
93 */
94 eap_sim_file_card_t *eap_sim_file_card_create(eap_sim_file_triplets_t *triplets)
95 {
96 private_eap_sim_file_card_t *this = malloc_thing(private_eap_sim_file_card_t);
97
98 this->public.card.get_triplet = (bool(*)(sim_card_t*, char *rand, char *sres, char *kc))get_triplet;
99 this->public.card.get_imsi = (identification_t*(*)(sim_card_t*))get_imsi;
100 this->public.destroy = (void(*)(eap_sim_file_card_t*))destroy;
101
102 /* this SIM card implementation does not have an ID, serve ID_ANY */
103 this->imsi = identification_create_from_encoding(ID_ANY, chunk_empty);
104 this->triplets = triplets;
105
106 return &this->public;
107 }
108