crypto/x509v3/pcy_node.c

   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
  66 static 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
  72 STACK_OF(X509_POLICY_NODE) *policy_node_cmp_new(void)
  73 {
  74     return sk_X509_POLICY_NODE_new(node_cmp);
  75 }
  76
  77 X509_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
  95 X509_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
 111 X509_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(*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
 159 void 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
 169 int 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 }