/* pcy_int.h */

/* 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).

 *

 */

DECLARE_STACK_OF(X509_POLICY_DATA)

DECLARE_STACK_OF(X509_POLICY_REF)

DECLARE_STACK_OF(X509_POLICY_NODE)

typedef struct X509_POLICY_DATA_st X509_POLICY_DATA;

typedef struct X509_POLICY_REF_st X509_POLICY_REF;

/* Internal structures */

/* This structure and the field names correspond to the Policy 'node' of

 * RFC3280. NB this structure contains no pointers to parent or child

 * data: X509_POLICY_NODE contains that. This means that the main policy data

 * can be kept static and cached with the certificate.

 */

struct X509_POLICY_DATA_st

	{

	unsigned int flags;

	/* Policy OID and qualifiers for this data */

	ASN1_OBJECT *valid_policy;

	STACK_OF(POLICYQUALINFO) *qualifier_set;

	STACK_OF(ASN1_OBJECT) *expected_policy_set;

	};

/* X509_POLICY_DATA flags values */

/* This flag indicates the structure has been mapped using a policy mapping

 * extension. If policy mapping is not active its references get deleted. 

 */

#define POLICY_DATA_FLAG_MAPPED			0x1

/* This flag indicates the data doesn't correspond to a policy in Certificate

 * Policies: it has been mapped to any policy.

 */

#define POLICY_DATA_FLAG_MAPPED_ANY		0x2

/* AND with flags to see if any mapping has occurred */

#define POLICY_DATA_FLAG_MAP_MASK		0x3

/* qualifiers are shared and shouldn't be freed */

#define POLICY_DATA_FLAG_SHARED_QUALIFIERS	0x4

/* Parent node is an extra node and should be freed */

#define POLICY_DATA_FLAG_EXTRA_NODE		0x8

/* Corresponding CertificatePolicies is critical */

#define POLICY_DATA_FLAG_CRITICAL		0x10

/* This structure is an entry from a table of mapped policies which

 * cross reference the policy it refers to.

 */

struct X509_POLICY_REF_st

	{

	ASN1_OBJECT *subjectDomainPolicy;

	const X509_POLICY_DATA *data;

	};

/* This structure is cached with a certificate */

struct X509_POLICY_CACHE_st {

	/* anyPolicy data or NULL if no anyPolicy */

	X509_POLICY_DATA *anyPolicy;

	/* other policy data */

	STACK_OF(X509_POLICY_DATA) *data;

	/* If policyMappings extension present a table of mapped policies */

	STACK_OF(X509_POLICY_REF) *maps;

	/* If InhibitAnyPolicy present this is its value or -1 if absent. */

	long any_skip;

	/* If policyConstraints and requireExplicitPolicy present this is its

	 * value or -1 if absent.

	 */

	long explicit_skip;

	/* If policyConstraints and policyMapping present this is its

	 * value or -1 if absent.

         */

	long map_skip;

	};

/*#define POLICY_CACHE_FLAG_CRITICAL		POLICY_DATA_FLAG_CRITICAL*/

/* This structure represents the relationship between nodes */

struct X509_POLICY_NODE_st

	{

	/* node data this refers to */

	const X509_POLICY_DATA *data;

	/* Parent node */

	X509_POLICY_NODE *parent;

	/* Number of child nodes */

	int nchild;

	};

struct X509_POLICY_LEVEL_st

	{

	/* Cert for this level */

	X509 *cert;

	/* nodes at this level */

	STACK_OF(X509_POLICY_NODE) *nodes;

	/* anyPolicy node */

	X509_POLICY_NODE *anyPolicy;

	/* Extra data */

	/*STACK_OF(X509_POLICY_DATA) *extra_data;*/

	unsigned int flags;

	};

struct X509_POLICY_TREE_st

	{

	/* This is the tree 'level' data */

	X509_POLICY_LEVEL *levels;

	int nlevel;

	/* Extra policy data when additional nodes (not from the certificate)

	 * are required.

	 */

	STACK_OF(X509_POLICY_DATA) *extra_data;

	/* This is the authority constained policy set */

	STACK_OF(X509_POLICY_NODE) *auth_policies;

	STACK_OF(X509_POLICY_NODE) *user_policies;

	unsigned int flags;

	};

/* Set if anyPolicy present in user policies */

#define POLICY_FLAG_ANY_POLICY		0x2

/* Useful macros */

#define node_data_critical(data) (data->flags & POLICY_DATA_FLAG_CRITICAL)

#define node_critical(node) node_data_critical(node->data)

/* Internal functions */

IMPORT_C X509_POLICY_DATA *policy_data_new(POLICYINFO *policy, ASN1_OBJECT *id,

								int crit);

IMPORT_C void policy_data_free(X509_POLICY_DATA *data);

IMPORT_C X509_POLICY_DATA *policy_cache_find_data(const X509_POLICY_CACHE *cache,

							const ASN1_OBJECT *id);

IMPORT_C int policy_cache_set_mapping(X509 *x, POLICY_MAPPINGS *maps);

IMPORT_C STACK_OF(X509_POLICY_NODE) *policy_node_cmp_new(void);

void policy_cache_init(void);

IMPORT_C void policy_cache_free(X509_POLICY_CACHE *cache);

IMPORT_C X509_POLICY_NODE *level_find_node(const X509_POLICY_LEVEL *level,

					const ASN1_OBJECT *id);

IMPORT_C X509_POLICY_NODE *tree_find_sk(STACK_OF(X509_POLICY_NODE) *sk,

						const ASN1_OBJECT *id);

IMPORT_C X509_POLICY_NODE *level_add_node(X509_POLICY_LEVEL *level,

			X509_POLICY_DATA *data,

			X509_POLICY_NODE *parent,

			X509_POLICY_TREE *tree);

IMPORT_C void policy_node_free(X509_POLICY_NODE *node);

IMPORT_C const X509_POLICY_CACHE *policy_cache_set(X509 *x);