obj_lib.c revision 296465 
1/* crypto/objects/obj_lib.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/lhash.h>
62#include <openssl/objects.h>
63#include <openssl/buffer.h>
64
65ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o)
66{
67    ASN1_OBJECT *r;
68    int i;
69    char *ln = NULL;
70
71    if (o == NULL)
72        return (NULL);
73    if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))
74        return ((ASN1_OBJECT *)o); /* XXX: ugh! Why? What kind of duplication
75                                    * is this??? */
76
77    r = ASN1_OBJECT_new();
78    if (r == NULL) {
79        OBJerr(OBJ_F_OBJ_DUP, ERR_R_ASN1_LIB);
80        return (NULL);
81    }
82    r->data = OPENSSL_malloc(o->length);
83    if (r->data == NULL)
84        goto err;
85    if (o->data != NULL)
86        memcpy(r->data, o->data, o->length);
87    r->length = o->length;
88    r->nid = o->nid;
89    r->ln = r->sn = NULL;
90    if (o->ln != NULL) {
91        i = strlen(o->ln) + 1;
92        r->ln = ln = OPENSSL_malloc(i);
93        if (r->ln == NULL)
94            goto err;
95        memcpy(ln, o->ln, i);
96    }
97
98    if (o->sn != NULL) {
99        char *s;
100
101        i = strlen(o->sn) + 1;
102        r->sn = s = OPENSSL_malloc(i);
103        if (r->sn == NULL)
104            goto err;
105        memcpy(s, o->sn, i);
106    }
107    r->flags = o->flags | (ASN1_OBJECT_FLAG_DYNAMIC |
108                           ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
109                           ASN1_OBJECT_FLAG_DYNAMIC_DATA);
110    return (r);
111 err:
112    OBJerr(OBJ_F_OBJ_DUP, ERR_R_MALLOC_FAILURE);
113    if (r != NULL) {
114        if (ln != NULL)
115            OPENSSL_free(ln);
116        if (r->data != NULL)
117            OPENSSL_free(r->data);
118        OPENSSL_free(r);
119    }
120    return (NULL);
121}
122
123int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b)
124{
125    int ret;
126
127    ret = (a->length - b->length);
128    if (ret)
129        return (ret);
130    return (memcmp(a->data, b->data, a->length));
131}
132