/* 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);

 	}