1 /* $OpenBSD: x_attrib.c,v 1.14 2020/06/04 21:21:03 schwarze Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59 #include <stdio.h>
60
61 #include <openssl/asn1t.h>
62 #include <openssl/objects.h>
63 #include <openssl/x509.h>
64
65 /* X509_ATTRIBUTE: this has the following form:
66 *
67 * typedef struct x509_attributes_st
68 * {
69 * ASN1_OBJECT *object;
70 * int single;
71 * union {
72 * char *ptr;
73 * STACK_OF(ASN1_TYPE) *set;
74 * ASN1_TYPE *single;
75 * } value;
76 * } X509_ATTRIBUTE;
77 *
78 * this needs some extra thought because the CHOICE type is
79 * merged with the main structure and because the value can
80 * be anything at all we *must* try the SET OF first because
81 * the ASN1_ANY type will swallow anything including the whole
82 * SET OF structure.
83 */
84
85 static const ASN1_TEMPLATE X509_ATTRIBUTE_SET_ch_tt[] = {
86 {
87 .flags = ASN1_TFLG_SET_OF,
88 .tag = 0,
89 .offset = offsetof(X509_ATTRIBUTE, value.set),
90 .field_name = "value.set",
91 .item = &ASN1_ANY_it,
92 },
93 {
94 .flags = 0,
95 .tag = 0,
96 .offset = offsetof(X509_ATTRIBUTE, value.single),
97 .field_name = "value.single",
98 .item = &ASN1_ANY_it,
99 },
100 };
101
102 const ASN1_ITEM X509_ATTRIBUTE_SET_it = {
103 .itype = ASN1_ITYPE_CHOICE,
104 .utype = offsetof(X509_ATTRIBUTE, single),
105 .templates = X509_ATTRIBUTE_SET_ch_tt,
106 .tcount = sizeof(X509_ATTRIBUTE_SET_ch_tt) / sizeof(ASN1_TEMPLATE),
107 .funcs = NULL,
108 .size = sizeof(X509_ATTRIBUTE),
109 .sname = "X509_ATTRIBUTE",
110 };
111
112 static const ASN1_TEMPLATE X509_ATTRIBUTE_seq_tt[] = {
113 {
114 .flags = 0,
115 .tag = 0,
116 .offset = offsetof(X509_ATTRIBUTE, object),
117 .field_name = "object",
118 .item = &ASN1_OBJECT_it,
119 },
120 /* CHOICE type merged with parent */
121 {
122 .flags = 0 | ASN1_TFLG_COMBINE,
123 .tag = 0,
124 .offset = 0,
125 .field_name = NULL,
126 .item = &X509_ATTRIBUTE_SET_it,
127 },
128 };
129
130 const ASN1_ITEM X509_ATTRIBUTE_it = {
131 .itype = ASN1_ITYPE_SEQUENCE,
132 .utype = V_ASN1_SEQUENCE,
133 .templates = X509_ATTRIBUTE_seq_tt,
134 .tcount = sizeof(X509_ATTRIBUTE_seq_tt) / sizeof(ASN1_TEMPLATE),
135 .funcs = NULL,
136 .size = sizeof(X509_ATTRIBUTE),
137 .sname = "X509_ATTRIBUTE",
138 };
139
140
141 X509_ATTRIBUTE *
d2i_X509_ATTRIBUTE(X509_ATTRIBUTE ** a,const unsigned char ** in,long len)142 d2i_X509_ATTRIBUTE(X509_ATTRIBUTE **a, const unsigned char **in, long len)
143 {
144 return (X509_ATTRIBUTE *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
145 &X509_ATTRIBUTE_it);
146 }
147
148 int
i2d_X509_ATTRIBUTE(X509_ATTRIBUTE * a,unsigned char ** out)149 i2d_X509_ATTRIBUTE(X509_ATTRIBUTE *a, unsigned char **out)
150 {
151 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_ATTRIBUTE_it);
152 }
153
154 X509_ATTRIBUTE *
X509_ATTRIBUTE_new(void)155 X509_ATTRIBUTE_new(void)
156 {
157 return (X509_ATTRIBUTE *)ASN1_item_new(&X509_ATTRIBUTE_it);
158 }
159
160 void
X509_ATTRIBUTE_free(X509_ATTRIBUTE * a)161 X509_ATTRIBUTE_free(X509_ATTRIBUTE *a)
162 {
163 ASN1_item_free((ASN1_VALUE *)a, &X509_ATTRIBUTE_it);
164 }
165
166 X509_ATTRIBUTE *
X509_ATTRIBUTE_dup(X509_ATTRIBUTE * x)167 X509_ATTRIBUTE_dup(X509_ATTRIBUTE *x)
168 {
169 return ASN1_item_dup(&X509_ATTRIBUTE_it, x);
170 }
171
172 X509_ATTRIBUTE *
X509_ATTRIBUTE_create(int nid,int atrtype,void * value)173 X509_ATTRIBUTE_create(int nid, int atrtype, void *value)
174 {
175 X509_ATTRIBUTE *ret = NULL;
176 ASN1_TYPE *val = NULL;
177 ASN1_OBJECT *oid;
178
179 if ((oid = OBJ_nid2obj(nid)) == NULL)
180 return (NULL);
181 if ((ret = X509_ATTRIBUTE_new()) == NULL)
182 return (NULL);
183 ret->object = oid;
184 ret->single = 0;
185 if ((ret->value.set = sk_ASN1_TYPE_new_null()) == NULL)
186 goto err;
187 if ((val = ASN1_TYPE_new()) == NULL)
188 goto err;
189 if (!sk_ASN1_TYPE_push(ret->value.set, val))
190 goto err;
191
192 ASN1_TYPE_set(val, atrtype, value);
193 return (ret);
194
195 err:
196 if (ret != NULL)
197 X509_ATTRIBUTE_free(ret);
198 if (val != NULL)
199 ASN1_TYPE_free(val);
200 return (NULL);
201 }
202