/* pcy_node.c */

/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL

 * project 2004.

 */

/* ====================================================================

 * Copyright (c) 2004 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 <openssl/asn1.h>

#include <openssl/x509.h>

#include <openssl/x509v3.h>

#include "pcy_int.h"

static int node_cmp(const X509_POLICY_NODE * const *a,

			const X509_POLICY_NODE * const *b)

	{

	return OBJ_cmp((*a)->data->valid_policy, (*b)->data->valid_policy);

	}

EXPORT_C STACK_OF(X509_POLICY_NODE) *policy_node_cmp_new(void)

	{

	return sk_X509_POLICY_NODE_new(node_cmp);

	}

EXPORT_C X509_POLICY_NODE *tree_find_sk(STACK_OF(X509_POLICY_NODE) *nodes,

					const ASN1_OBJECT *id)

	{

	X509_POLICY_DATA n;

	X509_POLICY_NODE l;

	int idx;

	n.valid_policy = (ASN1_OBJECT *)id;

	l.data = &n;

	idx = sk_X509_POLICY_NODE_find(nodes, &l);

	if (idx == -1)

		return NULL;

	return sk_X509_POLICY_NODE_value(nodes, idx);

	}

EXPORT_C X509_POLICY_NODE *level_find_node(const X509_POLICY_LEVEL *level,

					const ASN1_OBJECT *id)

	{

	return tree_find_sk(level->nodes, id);

	}

EXPORT_C X509_POLICY_NODE *level_add_node(X509_POLICY_LEVEL *level,

			X509_POLICY_DATA *data,

			X509_POLICY_NODE *parent,

			X509_POLICY_TREE *tree)

	{

	X509_POLICY_NODE *node;

	node = OPENSSL_malloc(sizeof(X509_POLICY_NODE));

	if (!node)

		return NULL;

	node->data = data;

	node->parent = parent;

	node->nchild = 0;

	if (level)

		{

		if (OBJ_obj2nid(data->valid_policy) == NID_any_policy)

			{

			if (level->anyPolicy)

				goto node_error;

			level->anyPolicy = node;

			}

		else

			{

			if (!level->nodes)

				level->nodes = policy_node_cmp_new();

			if (!level->nodes)

				goto node_error;

			if (!sk_X509_POLICY_NODE_push(level->nodes, node))

				goto node_error;

			}

		}

	if (tree)

		{

		if (!tree->extra_data)

			 tree->extra_data = sk_X509_POLICY_DATA_new_null();

		if (!tree->extra_data)

			goto node_error;

		if (!sk_X509_POLICY_DATA_push(tree->extra_data, data))

			goto node_error;

		}

	if (parent)

		parent->nchild++;

	return node;

	node_error:

	policy_node_free(node);

	return 0;

	}

EXPORT_C void policy_node_free(X509_POLICY_NODE *node)

	{

	OPENSSL_free(node);

	}