A local copy of OpenSSL from GitHub
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/*
* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/lhash.h>
#include <openssl/objects.h>
#include <openssl/buffer.h>
#include "internal/asn1_int.h"
ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o)
{
ASN1_OBJECT *r;
if (o == NULL)
return NULL;
/* If object isn't dynamic it's an internal OID which is never freed */
if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))
return ((ASN1_OBJECT *)o);
r = ASN1_OBJECT_new();
if (r == NULL) {
OBJerr(OBJ_F_OBJ_DUP, ERR_R_ASN1_LIB);
return (NULL);
}
/* Set dynamic flags so everything gets freed up on error */
r->flags = o->flags | (ASN1_OBJECT_FLAG_DYNAMIC |
ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
ASN1_OBJECT_FLAG_DYNAMIC_DATA);
if (o->length > 0 && (r->data = OPENSSL_memdup(o->data, o->length)) == NULL)
goto err;
r->length = o->length;
r->nid = o->nid;
if (o->ln != NULL && (r->ln = OPENSSL_strdup(o->ln)) == NULL)
goto err;
if (o->sn != NULL && (r->sn = OPENSSL_strdup(o->sn)) == NULL)
goto err;
return r;
err:
ASN1_OBJECT_free(r);
OBJerr(OBJ_F_OBJ_DUP, ERR_R_MALLOC_FAILURE);
return NULL;
}
int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b)
{
int ret;
ret = (a->length - b->length);
if (ret)
return (ret);
return (memcmp(a->data, b->data, a->length));
}