1 /* $OpenBSD: obj_lib.c,v 1.19 2023/08/17 09:13:01 tb 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 #include <string.h>
61
62 #include <openssl/err.h>
63 #include <openssl/buffer.h>
64 #include <openssl/lhash.h>
65 #include <openssl/objects.h>
66
67 #include "asn1_local.h"
68
69 ASN1_OBJECT *
OBJ_dup(const ASN1_OBJECT * o)70 OBJ_dup(const ASN1_OBJECT *o)
71 {
72 ASN1_OBJECT *r;
73 char *ln = NULL, *sn = NULL;
74 unsigned char *data = NULL;
75
76 if (o == NULL)
77 return (NULL);
78 if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))
79 return((ASN1_OBJECT *)o); /* XXX: ugh! Why? What kind of
80 duplication is this??? */
81
82 r = ASN1_OBJECT_new();
83 if (r == NULL) {
84 OBJerror(ERR_R_ASN1_LIB);
85 return (NULL);
86 }
87 data = malloc(o->length);
88 if (data == NULL)
89 goto err;
90 if (o->data != NULL)
91 memcpy(data, o->data, o->length);
92 /* once data attached to object it remains const */
93 r->data = data;
94 r->length = o->length;
95 r->nid = o->nid;
96 r->ln = r->sn = NULL;
97 if (o->ln != NULL) {
98 ln = strdup(o->ln);
99 if (ln == NULL)
100 goto err;
101 r->ln = ln;
102 }
103
104 if (o->sn != NULL) {
105 sn = strdup(o->sn);
106 if (sn == NULL)
107 goto err;
108 r->sn = sn;
109 }
110 r->flags = o->flags | (ASN1_OBJECT_FLAG_DYNAMIC |
111 ASN1_OBJECT_FLAG_DYNAMIC_STRINGS | ASN1_OBJECT_FLAG_DYNAMIC_DATA);
112 return (r);
113
114 err:
115 OBJerror(ERR_R_MALLOC_FAILURE);
116 free(ln);
117 free(sn);
118 free(data);
119 free(r);
120 return (NULL);
121 }
122 LCRYPTO_ALIAS(OBJ_dup);
123
124 int
OBJ_cmp(const ASN1_OBJECT * a,const ASN1_OBJECT * b)125 OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b)
126 {
127 int cmp;
128
129 if ((cmp = a->length - b->length) != 0)
130 return cmp;
131 if (a->length == 0)
132 return 0;
133 return memcmp(a->data, b->data, a->length);
134 }
135 LCRYPTO_ALIAS(OBJ_cmp);
136