pcy_node.c revision 296341 
1/* pcy_node.c */
2/*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4 * 2004.
5 */
6/* ====================================================================
7 * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in
18 *    the documentation and/or other materials provided with the
19 *    distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 *    software must display the following acknowledgment:
23 *    "This product includes software developed by the OpenSSL Project
24 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 *    endorse or promote products derived from this software without
28 *    prior written permission. For written permission, please contact
29 *    licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 *    nor may "OpenSSL" appear in their names without prior written
33 *    permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 *    acknowledgment:
37 *    "This product includes software developed by the OpenSSL Project
38 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com).  This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
57 *
58 */
59
60#include <openssl/asn1.h>
61#include <openssl/x509.h>
62#include <openssl/x509v3.h>
63
64#include "pcy_int.h"
65
66static int node_cmp(const X509_POLICY_NODE *const *a,
67                    const X509_POLICY_NODE *const *b)
68{
69    return OBJ_cmp((*a)->data->valid_policy, (*b)->data->valid_policy);
70}
71
72STACK_OF(X509_POLICY_NODE) *policy_node_cmp_new(void)
73{
74    return sk_X509_POLICY_NODE_new(node_cmp);
75}
76
77X509_POLICY_NODE *tree_find_sk(STACK_OF(X509_POLICY_NODE) *nodes,
78                               const ASN1_OBJECT *id)
79{
80    X509_POLICY_DATA n;
81    X509_POLICY_NODE l;
82    int idx;
83
84    n.valid_policy = (ASN1_OBJECT *)id;
85    l.data = &n;
86
87    idx = sk_X509_POLICY_NODE_find(nodes, &l);
88    if (idx == -1)
89        return NULL;
90
91    return sk_X509_POLICY_NODE_value(nodes, idx);
92
93}
94
95X509_POLICY_NODE *level_find_node(const X509_POLICY_LEVEL *level,
96                                  const X509_POLICY_NODE *parent,
97                                  const ASN1_OBJECT *id)
98{
99    X509_POLICY_NODE *node;
100    int i;
101    for (i = 0; i < sk_X509_POLICY_NODE_num(level->nodes); i++) {
102        node = sk_X509_POLICY_NODE_value(level->nodes, i);
103        if (node->parent == parent) {
104            if (!OBJ_cmp(node->data->valid_policy, id))
105                return node;
106        }
107    }
108    return NULL;
109}
110
111X509_POLICY_NODE *level_add_node(X509_POLICY_LEVEL *level,
112                                 const X509_POLICY_DATA *data,
113                                 X509_POLICY_NODE *parent,
114                                 X509_POLICY_TREE *tree)
115{
116    X509_POLICY_NODE *node;
117    node = OPENSSL_malloc(sizeof(X509_POLICY_NODE));
118    if (!node)
119        return NULL;
120    node->data = data;
121    node->parent = parent;
122    node->nchild = 0;
123    if (level) {
124        if (OBJ_obj2nid(data->valid_policy) == NID_any_policy) {
125            if (level->anyPolicy)
126                goto node_error;
127            level->anyPolicy = node;
128        } else {
129
130            if (!level->nodes)
131                level->nodes = policy_node_cmp_new();
132            if (!level->nodes)
133                goto node_error;
134            if (!sk_X509_POLICY_NODE_push(level->nodes, node))
135                goto node_error;
136        }
137    }
138
139    if (tree) {
140        if (!tree->extra_data)
141            tree->extra_data = sk_X509_POLICY_DATA_new_null();
142        if (!tree->extra_data)
143            goto node_error;
144        if (!sk_X509_POLICY_DATA_push(tree->extra_data, data))
145            goto node_error;
146    }
147
148    if (parent)
149        parent->nchild++;
150
151    return node;
152
153 node_error:
154    policy_node_free(node);
155    return 0;
156
157}
158
159void policy_node_free(X509_POLICY_NODE *node)
160{
161    OPENSSL_free(node);
162}
163
164/*
165 * See if a policy node matches a policy OID. If mapping enabled look through
166 * expected policy set otherwise just valid policy.
167 */
168
169int policy_node_match(const X509_POLICY_LEVEL *lvl,
170                      const X509_POLICY_NODE *node, const ASN1_OBJECT *oid)
171{
172    int i;
173    ASN1_OBJECT *policy_oid;
174    const X509_POLICY_DATA *x = node->data;
175
176    if ((lvl->flags & X509_V_FLAG_INHIBIT_MAP)
177        || !(x->flags & POLICY_DATA_FLAG_MAP_MASK)) {
178        if (!OBJ_cmp(x->valid_policy, oid))
179            return 1;
180        return 0;
181    }
182
183    for (i = 0; i < sk_ASN1_OBJECT_num(x->expected_policy_set); i++) {
184        policy_oid = sk_ASN1_OBJECT_value(x->expected_policy_set, i);
185        if (!OBJ_cmp(policy_oid, oid))
186            return 1;
187    }
188    return 0;
189
190}
191