1/*
2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include "internal/cryptlib.h"
12#include <openssl/objects.h>
13#include <openssl/buffer.h>
14#include "crypto/asn1.h"
15
16ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o)
17{
18 ASN1_OBJECT *r;
19
20 if (o == NULL)
21 return NULL;
22 /* If object isn't dynamic it's an internal OID which is never freed */
23 if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))
24 return (ASN1_OBJECT *)o;
25
26 r = ASN1_OBJECT_new();
27 if (r == NULL) {
28 OBJerr(OBJ_F_OBJ_DUP, ERR_R_ASN1_LIB);
29 return NULL;
30 }
31
32 /* Set dynamic flags so everything gets freed up on error */
33
34 r->flags = o->flags | (ASN1_OBJECT_FLAG_DYNAMIC |
35 ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
36 ASN1_OBJECT_FLAG_DYNAMIC_DATA);
37
38 if (o->length > 0 && (r->data = OPENSSL_memdup(o->data, o->length)) == NULL)
39 goto err;
40
41 r->length = o->length;
42 r->nid = o->nid;
43
44 if (o->ln != NULL && (r->ln = OPENSSL_strdup(o->ln)) == NULL)
45 goto err;
46
47 if (o->sn != NULL && (r->sn = OPENSSL_strdup(o->sn)) == NULL)
48 goto err;
49
50 return r;
51 err:
52 ASN1_OBJECT_free(r);
53 OBJerr(OBJ_F_OBJ_DUP, ERR_R_MALLOC_FAILURE);
54 return NULL;
55}
56
57int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b)
58{
59 int ret;
60
61 ret = (a->length - b->length);
62 if (ret)
63 return ret;
64 return memcmp(a->data, b->data, a->length);
65}
66