1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/*
* Copyright (C) 2015 Red Hat, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* The GnuTLS is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
/* Functions that relate on PKCS7 attribute setting.
*/
#include "gnutls_int.h"
#include <datum.h>
#include <global.h>
#include "errors.h"
#include <common.h>
#include <x509_b64.h>
#include <gnutls/abstract.h>
#include <gnutls/pkcs7.h>
/**
* gnutls_pkcs7_add_attr:
* @list: A list of existing attributes or pointer to %NULL for the first one
* @oid: the OID of the attribute to be set
* @data: the raw (DER-encoded) data of the attribute to be set
* @flags: zero or %GNUTLS_PKCS7_ATTR_ENCODE_OCTET_STRING
*
* This function will set a PKCS #7 attribute in the provided list.
* If this function fails, the previous list would be deallocated.
*
* Note that any attributes set with this function must either be
* DER or BER encoded, unless a special flag is present.
*
* Returns: On success, the new list head, otherwise %NULL.
*
* Since: 3.4.2
**/
int
gnutls_pkcs7_add_attr(gnutls_pkcs7_attrs_t * list, const char *oid,
gnutls_datum_t * data, unsigned flags)
{
int ret;
gnutls_pkcs7_attrs_st *r;
r = gnutls_calloc(1, sizeof(gnutls_pkcs7_attrs_st));
if (r == NULL)
goto fail;
if (flags & GNUTLS_PKCS7_ATTR_ENCODE_OCTET_STRING) {
ret = _gnutls_x509_encode_string(ASN1_ETYPE_OCTET_STRING,
data->data, data->size,
&r->data);
} else {
ret = _gnutls_set_datum(&r->data, data->data, data->size);
}
if (ret < 0)
goto fail;
r->oid = gnutls_strdup(oid);
if (r->oid == NULL)
goto fail;
r->next = *list;
*list = r;
return 0;
fail:
if (r) {
gnutls_free(r->data.data);
gnutls_free(r);
}
gnutls_pkcs7_attrs_deinit(*list);
return GNUTLS_E_MEMORY_ERROR;
}
/**
* gnutls_pkcs7_get_attr:
* @list: A list of existing attributes or %NULL for the first one
* @idx: the index of the attribute to get
* @oid: the OID of the attribute (read-only)
* @data: the raw data of the attribute
* @flags: zero or %GNUTLS_PKCS7_ATTR_ENCODE_OCTET_STRING
*
* This function will get a PKCS #7 attribute from the provided list.
* The OID is a constant string, but data will be allocated and must be
* deinitialized by the caller.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value. %GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE is returned
* if there are no data in the current index.
*
* Since: 3.4.2
**/
int
gnutls_pkcs7_get_attr(gnutls_pkcs7_attrs_t list, unsigned idx, char **oid,
gnutls_datum_t * data, unsigned flags)
{
unsigned i;
gnutls_pkcs7_attrs_st *p = list;
int ret;
for (i = 0; i < idx; i++) {
p = p->next;
if (p == NULL)
break;
}
if (p == NULL)
return gnutls_assert_val(GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE);
*oid = p->oid;
if (flags & GNUTLS_PKCS7_ATTR_ENCODE_OCTET_STRING) {
ret = _gnutls_x509_decode_string(ASN1_ETYPE_OCTET_STRING,
p->data.data, p->data.size,
data, 1);
} else {
ret = _gnutls_set_datum(data, p->data.data, p->data.size);
}
if (ret < 0)
return gnutls_assert_val(ret);
return 0;
}
/**
* gnutls_pkcs7_attrs_deinit:
* @list: A list of existing attributes
*
* This function will clear a PKCS #7 attribute list.
*
* Since: 3.4.2
**/
void gnutls_pkcs7_attrs_deinit(gnutls_pkcs7_attrs_t list)
{
gnutls_pkcs7_attrs_st *r = list, *next;
while (r) {
next = r->next;
gnutls_free(r->data.data);
gnutls_free(r->oid);
gnutls_free(r);
r = next;
}
}
|
