obj_lib.c revision 160814 
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) return(NULL);
72	if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))
73		return((ASN1_OBJECT *)o); /* XXX: ugh! Why? What kind of
74					     duplication is this??? */
75
76	r=ASN1_OBJECT_new();
77	if (r == NULL)
78		{
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		{
92		i=strlen(o->ln)+1;
93		r->ln=ln=OPENSSL_malloc(i);
94		if (r->ln == NULL) goto err;
95		memcpy(ln,o->ln,i);
96		}
97
98	if (o->sn != NULL)
99		{
100		char *s;
101
102		i=strlen(o->sn)+1;
103		r->sn=s=OPENSSL_malloc(i);
104		if (r->sn == NULL) goto err;
105		memcpy(s,o->sn,i);
106		}
107	r->flags=o->flags|(ASN1_OBJECT_FLAG_DYNAMIC|
108		ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|ASN1_OBJECT_FLAG_DYNAMIC_DATA);
109	return(r);
110err:
111	OBJerr(OBJ_F_OBJ_DUP,ERR_R_MALLOC_FAILURE);
112	if (r != NULL)
113		{
114		if (ln != NULL) OPENSSL_free(ln);
115		if (r->data != NULL) OPENSSL_free(r->data);
116		OPENSSL_free(r);
117		}
118	return(NULL);
119	}
120
121int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b)
122	{
123	int ret;
124
125	ret=(a->length-b->length);
126	if (ret) return(ret);
127	return(memcmp(a->data,b->data,a->length));
128	}
129