/* $OpenBSD: obj_lib.c,v 1.16 2022/01/07 11:13:54 tb Exp $ */

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 *

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 *

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 *

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 * The licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

#include <stdio.h>

#include <string.h>

#include <openssl/err.h>

#include <openssl/buffer.h>

#include <openssl/lhash.h>

#include <openssl/objects.h>

#include "asn1_locl.h"

ASN1_OBJECT *

OBJ_dup(const ASN1_OBJECT *o)

{

  ASN1_OBJECT *r;

  char *ln = NULL, *sn = NULL;

  unsigned char *data = NULL;

  if (o == NULL)

    return (NULL);

  if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))

    return((ASN1_OBJECT *)o); /* XXX: ugh! Why? What kind of

               duplication is this??? */

  r = ASN1_OBJECT_new();

  if (r == NULL) {

    OBJerror(ERR_R_ASN1_LIB);

    return (NULL);

  }

  data = malloc(o->length);

  if (data == NULL)

    goto err;

  if (o->data != NULL)

    memcpy(data, o->data, o->length);

  /* once data attached to object it remains const */

  r->data = data;

  r->length = o->length;

  r->nid = o->nid;

  r->ln = r->sn = NULL;

  if (o->ln != NULL) {

    ln = strdup(o->ln);

    if (ln == NULL)

      goto err;

    r->ln = ln;

  }

  if (o->sn != NULL) {

    sn = strdup(o->sn);

    if (sn == NULL)

      goto err;

    r->sn = sn;

  }

  r->flags = o->flags | (ASN1_OBJECT_FLAG_DYNAMIC |

      ASN1_OBJECT_FLAG_DYNAMIC_STRINGS | ASN1_OBJECT_FLAG_DYNAMIC_DATA);

  return (r);

 err:

  OBJerror(ERR_R_MALLOC_FAILURE);

  free(ln);

  free(sn);

  free(data);

  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));

}