sl@0: /* pcy_map.c */
sl@0: /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
sl@0:  * project 2004.
sl@0:  */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    licensing@OpenSSL.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  * ====================================================================
sl@0:  *
sl@0:  * This product includes cryptographic software written by Eric Young
sl@0:  * (eay@cryptsoft.com).  This product includes software written by Tim
sl@0:  * Hudson (tjh@cryptsoft.com).
sl@0:  *
sl@0:  */
sl@0: 
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/x509.h>
sl@0: #include <openssl/x509v3.h>
sl@0: 
sl@0: #include "pcy_int.h"
sl@0: 
sl@0: static int ref_cmp(const X509_POLICY_REF * const *a,
sl@0: 			const X509_POLICY_REF * const *b)
sl@0: 	{
sl@0: 	return OBJ_cmp((*a)->subjectDomainPolicy, (*b)->subjectDomainPolicy);
sl@0: 	}
sl@0: 
sl@0: static void policy_map_free(X509_POLICY_REF *map)
sl@0: 	{
sl@0: 	if (map->subjectDomainPolicy)
sl@0: 		ASN1_OBJECT_free(map->subjectDomainPolicy);
sl@0: 	OPENSSL_free(map);
sl@0: 	}
sl@0: 
sl@0: static X509_POLICY_REF *policy_map_find(X509_POLICY_CACHE *cache, ASN1_OBJECT *id)
sl@0: 	{
sl@0: 	X509_POLICY_REF tmp;
sl@0: 	int idx;
sl@0: 	tmp.subjectDomainPolicy = id;
sl@0: 
sl@0: 	idx = sk_X509_POLICY_REF_find(cache->maps, &tmp);
sl@0: 	if (idx == -1)
sl@0: 		return NULL;
sl@0: 	return sk_X509_POLICY_REF_value(cache->maps, idx);
sl@0: 	}
sl@0: 
sl@0: /* Set policy mapping entries in cache.
sl@0:  * Note: this modifies the passed POLICY_MAPPINGS structure
sl@0:  */
sl@0: 
sl@0: EXPORT_C int policy_cache_set_mapping(X509 *x, POLICY_MAPPINGS *maps)
sl@0: 	{
sl@0: 	POLICY_MAPPING *map;
sl@0: 	X509_POLICY_REF *ref = NULL;
sl@0: 	X509_POLICY_DATA *data;
sl@0: 	X509_POLICY_CACHE *cache = x->policy_cache;
sl@0: 	int i;
sl@0: 	int ret = 0;
sl@0: 	if (sk_POLICY_MAPPING_num(maps) == 0)
sl@0: 		{
sl@0: 		ret = -1;
sl@0: 		goto bad_mapping;
sl@0: 		}
sl@0: 	cache->maps = sk_X509_POLICY_REF_new(ref_cmp);
sl@0: 	for (i = 0; i < sk_POLICY_MAPPING_num(maps); i++)
sl@0: 		{
sl@0: 		map = sk_POLICY_MAPPING_value(maps, i);
sl@0: 		/* Reject if map to or from anyPolicy */
sl@0: 		if ((OBJ_obj2nid(map->subjectDomainPolicy) == NID_any_policy)
sl@0: 		   || (OBJ_obj2nid(map->issuerDomainPolicy) == NID_any_policy))
sl@0: 			{
sl@0: 			ret = -1;
sl@0: 			goto bad_mapping;
sl@0: 			}
sl@0: 
sl@0: 		/* If we've already mapped from this OID bad mapping */
sl@0: 		if (policy_map_find(cache, map->subjectDomainPolicy) != NULL)
sl@0: 			{
sl@0: 			ret = -1;
sl@0: 			goto bad_mapping;
sl@0: 			}
sl@0: 
sl@0: 		/* Attempt to find matching policy data */
sl@0: 		data = policy_cache_find_data(cache, map->issuerDomainPolicy);
sl@0: 		/* If we don't have anyPolicy can't map */
sl@0: 		if (!data && !cache->anyPolicy)
sl@0: 			continue;
sl@0: 
sl@0: 		/* Create a NODE from anyPolicy */
sl@0: 		if (!data)
sl@0: 			{
sl@0: 			data = policy_data_new(NULL, map->issuerDomainPolicy,
sl@0: 					cache->anyPolicy->flags
sl@0: 						& POLICY_DATA_FLAG_CRITICAL);
sl@0: 			if (!data)
sl@0: 				goto bad_mapping;
sl@0: 			data->qualifier_set = cache->anyPolicy->qualifier_set;
sl@0: 			map->issuerDomainPolicy = NULL;
sl@0: 			data->flags |= POLICY_DATA_FLAG_MAPPED_ANY;
sl@0: 			data->flags |= POLICY_DATA_FLAG_SHARED_QUALIFIERS;
sl@0: 			if (!sk_X509_POLICY_DATA_push(cache->data, data))
sl@0: 				{
sl@0: 				policy_data_free(data);
sl@0: 				goto bad_mapping;
sl@0: 				}
sl@0: 			}
sl@0: 		else
sl@0: 			data->flags |= POLICY_DATA_FLAG_MAPPED;
sl@0: 
sl@0: 		if (!sk_ASN1_OBJECT_push(data->expected_policy_set, 
sl@0: 						map->subjectDomainPolicy))
sl@0: 			goto bad_mapping;
sl@0: 		
sl@0: 		ref = OPENSSL_malloc(sizeof(X509_POLICY_REF));
sl@0: 		if (!ref)
sl@0: 			goto bad_mapping;
sl@0: 
sl@0: 		ref->subjectDomainPolicy = map->subjectDomainPolicy;
sl@0: 		map->subjectDomainPolicy = NULL;
sl@0: 		ref->data = data;
sl@0: 
sl@0: 		if (!sk_X509_POLICY_REF_push(cache->maps, ref))
sl@0: 			goto bad_mapping;
sl@0: 
sl@0: 		ref = NULL;
sl@0: 
sl@0: 		}
sl@0: 
sl@0: 	ret = 1;
sl@0: 	bad_mapping:
sl@0: 	if (ret == -1)
sl@0: 		x->ex_flags |= EXFLAG_INVALID_POLICY;
sl@0: 	if (ref)
sl@0: 		policy_map_free(ref);
sl@0: 	if (ret <= 0)
sl@0: 		{
sl@0: 		sk_X509_POLICY_REF_pop_free(cache->maps, policy_map_free);
sl@0: 		cache->maps = NULL;
sl@0: 		}
sl@0: 	sk_POLICY_MAPPING_pop_free(maps, POLICY_MAPPING_free);
sl@0: 	return ret;
sl@0: 
sl@0: 	}