pcy_map.c revision 160815 
1/* pcy_map.c */
2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 2004.
4 */
5/* ====================================================================
6 * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in
17 *    the documentation and/or other materials provided with the
18 *    distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 *    software must display the following acknowledgment:
22 *    "This product includes software developed by the OpenSSL Project
23 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 *    endorse or promote products derived from this software without
27 *    prior written permission. For written permission, please contact
28 *    licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 *    nor may "OpenSSL" appear in their names without prior written
32 *    permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 *    acknowledgment:
36 *    "This product includes software developed by the OpenSSL Project
37 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com).  This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include "cryptlib.h"
60#include <openssl/x509.h>
61#include <openssl/x509v3.h>
62
63#include "pcy_int.h"
64
65static int ref_cmp(const X509_POLICY_REF * const *a,
66			const X509_POLICY_REF * const *b)
67	{
68	return OBJ_cmp((*a)->subjectDomainPolicy, (*b)->subjectDomainPolicy);
69	}
70
71static void policy_map_free(X509_POLICY_REF *map)
72	{
73	if (map->subjectDomainPolicy)
74		ASN1_OBJECT_free(map->subjectDomainPolicy);
75	OPENSSL_free(map);
76	}
77
78static X509_POLICY_REF *policy_map_find(X509_POLICY_CACHE *cache, ASN1_OBJECT *id)
79	{
80	X509_POLICY_REF tmp;
81	int idx;
82	tmp.subjectDomainPolicy = id;
83
84	idx = sk_X509_POLICY_REF_find(cache->maps, &tmp);
85	if (idx == -1)
86		return NULL;
87	return sk_X509_POLICY_REF_value(cache->maps, idx);
88	}
89
90/* Set policy mapping entries in cache.
91 * Note: this modifies the passed POLICY_MAPPINGS structure
92 */
93
94int policy_cache_set_mapping(X509 *x, POLICY_MAPPINGS *maps)
95	{
96	POLICY_MAPPING *map;
97	X509_POLICY_REF *ref = NULL;
98	X509_POLICY_DATA *data;
99	X509_POLICY_CACHE *cache = x->policy_cache;
100	int i;
101	int ret = 0;
102	if (sk_POLICY_MAPPING_num(maps) == 0)
103		{
104		ret = -1;
105		goto bad_mapping;
106		}
107	cache->maps = sk_X509_POLICY_REF_new(ref_cmp);
108	for (i = 0; i < sk_POLICY_MAPPING_num(maps); i++)
109		{
110		map = sk_POLICY_MAPPING_value(maps, i);
111		/* Reject if map to or from anyPolicy */
112		if ((OBJ_obj2nid(map->subjectDomainPolicy) == NID_any_policy)
113		   || (OBJ_obj2nid(map->issuerDomainPolicy) == NID_any_policy))
114			{
115			ret = -1;
116			goto bad_mapping;
117			}
118
119		/* If we've already mapped from this OID bad mapping */
120		if (policy_map_find(cache, map->subjectDomainPolicy) != NULL)
121			{
122			ret = -1;
123			goto bad_mapping;
124			}
125
126		/* Attempt to find matching policy data */
127		data = policy_cache_find_data(cache, map->issuerDomainPolicy);
128		/* If we don't have anyPolicy can't map */
129		if (!data && !cache->anyPolicy)
130			continue;
131
132		/* Create a NODE from anyPolicy */
133		if (!data)
134			{
135			data = policy_data_new(NULL, map->issuerDomainPolicy,
136					cache->anyPolicy->flags
137						& POLICY_DATA_FLAG_CRITICAL);
138			if (!data)
139				goto bad_mapping;
140			data->qualifier_set = cache->anyPolicy->qualifier_set;
141			map->issuerDomainPolicy = NULL;
142			data->flags |= POLICY_DATA_FLAG_MAPPED_ANY;
143			data->flags |= POLICY_DATA_FLAG_SHARED_QUALIFIERS;
144			if (!sk_X509_POLICY_DATA_push(cache->data, data))
145				{
146				policy_data_free(data);
147				goto bad_mapping;
148				}
149			}
150		else
151			data->flags |= POLICY_DATA_FLAG_MAPPED;
152
153		if (!sk_ASN1_OBJECT_push(data->expected_policy_set,
154						map->subjectDomainPolicy))
155			goto bad_mapping;
156
157		ref = OPENSSL_malloc(sizeof(X509_POLICY_REF));
158		if (!ref)
159			goto bad_mapping;
160
161		ref->subjectDomainPolicy = map->subjectDomainPolicy;
162		map->subjectDomainPolicy = NULL;
163		ref->data = data;
164
165		if (!sk_X509_POLICY_REF_push(cache->maps, ref))
166			goto bad_mapping;
167
168		ref = NULL;
169
170		}
171
172	ret = 1;
173	bad_mapping:
174	if (ret == -1)
175		x->ex_flags |= EXFLAG_INVALID_POLICY;
176	if (ref)
177		policy_map_free(ref);
178	if (ret <= 0)
179		{
180		sk_X509_POLICY_REF_pop_free(cache->maps, policy_map_free);
181		cache->maps = NULL;
182		}
183	sk_POLICY_MAPPING_pop_free(maps, POLICY_MAPPING_free);
184	return ret;
185
186	}
187