/* crypto/objects/obj_lib.c */

/* 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 "cryptlib.h"

#include <openssl/lhash.h>

#include <openssl/objects.h>

#include <openssl/buffer.h>

EXPORT_C ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o)

	{

	ASN1_OBJECT *r;

	int i;

	char *ln=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)

		{

		OBJerr(OBJ_F_OBJ_DUP,ERR_R_ASN1_LIB);

		return(NULL);

		}

	r->data=OPENSSL_malloc(o->length);

	if (r->data == NULL)

		goto err;

	if (o->data != NULL)

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

	r->length=o->length;

	r->nid=o->nid;

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

	if (o->ln != NULL)

		{

		i=strlen(o->ln)+1;

		r->ln=ln=OPENSSL_malloc(i);

		if (r->ln == NULL) goto err;

		memcpy(ln,o->ln,i);

		}

	if (o->sn != NULL)

		{

		char *s;

		i=strlen(o->sn)+1;

		r->sn=s=OPENSSL_malloc(i);

		if (r->sn == NULL) goto err;

		memcpy(s,o->sn,i);

		}

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

		ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|ASN1_OBJECT_FLAG_DYNAMIC_DATA);

	return(r);

err:

	OBJerr(OBJ_F_OBJ_DUP,ERR_R_MALLOC_FAILURE);

	if (r != NULL)

		{

		if (ln != NULL) OPENSSL_free(ln);

		if (r->data != NULL) OPENSSL_free(r->data);

		OPENSSL_free(r);

		}

	return(NULL);

	}

EXPORT_C 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));

	}