/*

 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (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/objects.h>

#include <openssl/buffer.h>

#include "crypto/asn1.h"

#include "crypto/asn1/asn1_local.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 = ossl_asn1_object_new();

    if (r == NULL) {

        ERR_raise(ERR_LIB_OBJ, 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);

    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);

}