/* a_x509a.c */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project 1999.
 */
/* ====================================================================
 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
 *
 * 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 above 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 acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED 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 OpenSSL PROJECT OR
 * ITS 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.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/evp.h>
#include <openssl/asn1t.h>
#include <openssl/x509.h>

/* X509_CERT_AUX routines. These are used to encode additional
 * user modifiable data about a certificate. This data is
 * appended to the X509 encoding when the *_X509_AUX routines
 * are used. This means that the "traditional" X509 routines
 * will simply ignore the extra data. 
 */

static X509_CERT_AUX *aux_get(X509 *x);

ASN1_SEQUENCE(X509_CERT_AUX) = {
	ASN1_SEQUENCE_OF_OPT(X509_CERT_AUX, trust, ASN1_OBJECT),
	ASN1_IMP_SEQUENCE_OF_OPT(X509_CERT_AUX, reject, ASN1_OBJECT, 0),
	ASN1_OPT(X509_CERT_AUX, alias, ASN1_UTF8STRING),
	ASN1_OPT(X509_CERT_AUX, keyid, ASN1_OCTET_STRING),
	ASN1_IMP_SEQUENCE_OF_OPT(X509_CERT_AUX, other, X509_ALGOR, 1)
} ASN1_SEQUENCE_END(X509_CERT_AUX)

IMPLEMENT_ASN1_FUNCTIONS(X509_CERT_AUX)

static X509_CERT_AUX *aux_get(X509 *x)
{
	if(!x) return NULL;
	if(!x->aux && !(x->aux = X509_CERT_AUX_new())) return NULL;
	return x->aux;
}

int X509_alias_set1(X509 *x, unsigned char *name, int len)
{
	X509_CERT_AUX *aux;
	if (!name)
		{
		if (!x || !x->aux || !x->aux->alias)
			return 1;
		ASN1_UTF8STRING_free(x->aux->alias);
		x->aux->alias = NULL;
		return 1;
		}
	if(!(aux = aux_get(x))) return 0;
	if(!aux->alias && !(aux->alias = ASN1_UTF8STRING_new())) return 0;
	return ASN1_STRING_set(aux->alias, name, len);
}

int X509_keyid_set1(X509 *x, unsigned char *id, int len)
{
	X509_CERT_AUX *aux;
	if (!id)
		{
		if (!x || !x->aux || !x->aux->keyid)
			return 1;
		ASN1_OCTET_STRING_free(x->aux->keyid);
		x->aux->keyid = NULL;
		return 1;
		}
	if(!(aux = aux_get(x))) return 0;
	if(!aux->keyid && !(aux->keyid = ASN1_OCTET_STRING_new())) return 0;
	return ASN1_STRING_set(aux->keyid, id, len);
}

unsigned char *X509_alias_get0(X509 *x, int *len)
{
	if(!x->aux || !x->aux->alias) return NULL;
	if(len) *len = x->aux->alias->length;
	return x->aux->alias->data;
}

unsigned char *X509_keyid_get0(X509 *x, int *len)
{
	if(!x->aux || !x->aux->keyid) return NULL;
	if(len) *len = x->aux->keyid->length;
	return x->aux->keyid->data;
}

int X509_add1_trust_object(X509 *x, ASN1_OBJECT *obj)
	{
	X509_CERT_AUX *aux;
	ASN1_OBJECT *objtmp = NULL;
	if (obj)
		{
		objtmp = OBJ_dup(obj);
		if (!objtmp)
			return 0;
		}
	if(!(aux = aux_get(x)))
		goto err;
	if(!aux->trust && !(aux->trust = sk_ASN1_OBJECT_new_null()))
			goto err;
	if (!objtmp || sk_ASN1_OBJECT_push(aux->trust, objtmp))
		return 1;
	err:
	if (objtmp)
		ASN1_OBJECT_free(objtmp);
	return 0;
	}

int X509_add1_reject_object(X509 *x, ASN1_OBJECT *obj)
{
	X509_CERT_AUX *aux;
	ASN1_OBJECT *objtmp;
	if(!(objtmp = OBJ_dup(obj))) return 0;
	if(!(aux = aux_get(x))) return 0;
	if(!aux->reject
		&& !(aux->reject = sk_ASN1_OBJECT_new_null())) return 0;
	return sk_ASN1_OBJECT_push(aux->reject, objtmp);
}

void X509_trust_clear(X509 *x)
{
	if(x->aux && x->aux->trust) {
		sk_ASN1_OBJECT_pop_free(x->aux->trust, ASN1_OBJECT_free);
		x->aux->trust = NULL;
	}
}

void X509_reject_clear(X509 *x)
{
	if(x->aux && x->aux->reject) {
		sk_ASN1_OBJECT_pop_free(x->aux->reject, ASN1_OBJECT_free);
		x->aux->reject = NULL;
	}
}

ASN1_SEQUENCE(X509_CERT_PAIR) = {
	ASN1_EXP_OPT(X509_CERT_PAIR, forward, X509, 0),
	ASN1_EXP_OPT(X509_CERT_PAIR, reverse, X509, 1)
} ASN1_SEQUENCE_END(X509_CERT_PAIR)

IMPLEMENT_ASN1_FUNCTIONS(X509_CERT_PAIR)