x_attrib.c revision 296465 
1/* crypto/asn1/x_attrib.c */
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#include "cryptlib.h"
61#include <openssl/objects.h>
62#include <openssl/asn1t.h>
63#include <openssl/x509.h>
64
65/*-
66 * X509_ATTRIBUTE: this has the following form:
67 *
68 * typedef struct x509_attributes_st
69 *      {
70 *      ASN1_OBJECT *object;
71 *      int single;
72 *      union   {
73 *              char            *ptr;
74 *              STACK_OF(ASN1_TYPE) *set;
75 *              ASN1_TYPE       *single;
76 *              } value;
77 *      } X509_ATTRIBUTE;
78 *
79 * this needs some extra thought because the CHOICE type is
80 * merged with the main structure and because the value can
81 * be anything at all we *must* try the SET OF first because
82 * the ASN1_ANY type will swallow anything including the whole
83 * SET OF structure.
84 */
85
86ASN1_CHOICE(X509_ATTRIBUTE_SET) = {
87        ASN1_SET_OF(X509_ATTRIBUTE, value.set, ASN1_ANY),
88        ASN1_SIMPLE(X509_ATTRIBUTE, value.single, ASN1_ANY)
89} ASN1_CHOICE_END_selector(X509_ATTRIBUTE, X509_ATTRIBUTE_SET, single)
90
91ASN1_SEQUENCE(X509_ATTRIBUTE) = {
92        ASN1_SIMPLE(X509_ATTRIBUTE, object, ASN1_OBJECT),
93        /* CHOICE type merged with parent */
94        ASN1_EX_COMBINE(0, 0, X509_ATTRIBUTE_SET)
95} ASN1_SEQUENCE_END(X509_ATTRIBUTE)
96
97IMPLEMENT_ASN1_FUNCTIONS(X509_ATTRIBUTE)
98IMPLEMENT_ASN1_DUP_FUNCTION(X509_ATTRIBUTE)
99
100X509_ATTRIBUTE *X509_ATTRIBUTE_create(int nid, int atrtype, void *value)
101{
102    X509_ATTRIBUTE *ret = NULL;
103    ASN1_TYPE *val = NULL;
104
105    if ((ret = X509_ATTRIBUTE_new()) == NULL)
106        return (NULL);
107    ret->object = OBJ_nid2obj(nid);
108    ret->single = 0;
109    if ((ret->value.set = sk_ASN1_TYPE_new_null()) == NULL)
110        goto err;
111    if ((val = ASN1_TYPE_new()) == NULL)
112        goto err;
113    if (!sk_ASN1_TYPE_push(ret->value.set, val))
114        goto err;
115
116    ASN1_TYPE_set(val, atrtype, value);
117    return (ret);
118 err:
119    if (ret != NULL)
120        X509_ATTRIBUTE_free(ret);
121    if (val != NULL)
122        ASN1_TYPE_free(val);
123    return (NULL);
124}
125