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1 | | /* |
2 | | * GnuTLS PIN support for PKCS#11 or TPM |
3 | | * Copyright (C) 2010-2012 Free Software Foundation, Inc. |
4 | | * |
5 | | * Authors: Nikos Mavrogiannopoulos |
6 | | * |
7 | | * The GnuTLS is free software; you can redistribute it and/or |
8 | | * modify it under the terms of the GNU Lesser General Public License |
9 | | * as published by the Free Software Foundation; either version 2.1 of |
10 | | * the License, or (at your option) any later version. |
11 | | * |
12 | | * This library is distributed in the hope that it will be useful, but |
13 | | * WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | | * Lesser General Public License for more details. |
16 | | * |
17 | | * You should have received a copy of the GNU Lesser General Public License |
18 | | * along with this program. If not, see <https://www.gnu.org/licenses/> |
19 | | */ |
20 | | |
21 | | #include "gnutls_int.h" |
22 | | #include <gnutls/pkcs11.h> |
23 | | #include "pin.h" |
24 | | #include "errors.h" |
25 | | |
26 | | gnutls_pin_callback_t _gnutls_pin_func; |
27 | | void *_gnutls_pin_data; |
28 | | |
29 | | /** |
30 | | * gnutls_pkcs11_set_pin_function: |
31 | | * @fn: The PIN callback, a gnutls_pin_callback_t() function. |
32 | | * @userdata: data to be supplied to callback |
33 | | * |
34 | | * This function will set a callback function to be used when a PIN is |
35 | | * required for PKCS 11 operations. See |
36 | | * gnutls_pin_callback_t() on how the callback should behave. |
37 | | * |
38 | | * Since: 2.12.0 |
39 | | **/ |
40 | | void gnutls_pkcs11_set_pin_function(gnutls_pin_callback_t fn, void *userdata) |
41 | 0 | { |
42 | 0 | _gnutls_pin_func = fn; |
43 | 0 | _gnutls_pin_data = userdata; |
44 | 0 | } |
45 | | |
46 | | /** |
47 | | * gnutls_pkcs11_get_pin_function: |
48 | | * @userdata: data to be supplied to callback |
49 | | * |
50 | | * This function will return the callback function set using |
51 | | * gnutls_pkcs11_set_pin_function(). |
52 | | * |
53 | | * Returns: The function set or NULL otherwise. |
54 | | * |
55 | | * Since: 3.1.0 |
56 | | **/ |
57 | | gnutls_pin_callback_t gnutls_pkcs11_get_pin_function(void **userdata) |
58 | 0 | { |
59 | 0 | if (_gnutls_pin_func != NULL) { |
60 | 0 | *userdata = _gnutls_pin_data; |
61 | 0 | return _gnutls_pin_func; |
62 | 0 | } |
63 | 0 | return NULL; |
64 | 0 | } |
65 | | |
66 | | int _gnutls_retrieve_pin(struct pin_info_st *pin_info, const char *url, |
67 | | const char *label, unsigned flags, char *pin, |
68 | | unsigned pin_size) |
69 | 0 | { |
70 | 0 | int ret; |
71 | |
|
72 | 0 | if (pin_info && pin_info->cb) |
73 | 0 | ret = pin_info->cb(pin_info->data, 0, (char *)url, label, flags, |
74 | 0 | pin, pin_size); |
75 | 0 | else if (_gnutls_pin_func) |
76 | 0 | ret = _gnutls_pin_func(_gnutls_pin_data, 0, (char *)url, label, |
77 | 0 | flags, pin, pin_size); |
78 | 0 | else |
79 | 0 | ret = gnutls_assert_val(GNUTLS_E_PKCS11_PIN_ERROR); |
80 | |
|
81 | 0 | return ret; |
82 | 0 | } |