1/*
2 * Copyright 2004-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <openssl/asn1.h>
11#include <openssl/x509.h>
12#include <openssl/x509v3.h>
13#include <openssl/err.h>
14
15#include "pcy_local.h"
16
17static int node_cmp(const X509_POLICY_NODE *const *a,
18 const X509_POLICY_NODE *const *b)
19{
20 return OBJ_cmp((*a)->data->valid_policy, (*b)->data->valid_policy);
21}
22
23STACK_OF(X509_POLICY_NODE) *policy_node_cmp_new(void)
24{
25 return sk_X509_POLICY_NODE_new(node_cmp);
26}
27
28X509_POLICY_NODE *tree_find_sk(STACK_OF(X509_POLICY_NODE) *nodes,
29 const ASN1_OBJECT *id)
30{
31 X509_POLICY_DATA n;
32 X509_POLICY_NODE l;
33 int idx;
34
35 n.valid_policy = (ASN1_OBJECT *)id;
36 l.data = &n;
37
38 idx = sk_X509_POLICY_NODE_find(nodes, &l);
39 return sk_X509_POLICY_NODE_value(nodes, idx);
40
41}
42
43X509_POLICY_NODE *level_find_node(const X509_POLICY_LEVEL *level,
44 const X509_POLICY_NODE *parent,
45 const ASN1_OBJECT *id)
46{
47 X509_POLICY_NODE *node;
48 int i;
49 for (i = 0; i < sk_X509_POLICY_NODE_num(level->nodes); i++) {
50 node = sk_X509_POLICY_NODE_value(level->nodes, i);
51 if (node->parent == parent) {
52 if (!OBJ_cmp(node->data->valid_policy, id))
53 return node;
54 }
55 }
56 return NULL;
57}
58
59X509_POLICY_NODE *level_add_node(X509_POLICY_LEVEL *level,
60 X509_POLICY_DATA *data,
61 X509_POLICY_NODE *parent,
62 X509_POLICY_TREE *tree)
63{
64 X509_POLICY_NODE *node;
65
66 node = OPENSSL_zalloc(sizeof(*node));
67 if (node == NULL) {
68 X509V3err(X509V3_F_LEVEL_ADD_NODE, ERR_R_MALLOC_FAILURE);
69 return NULL;
70 }
71 node->data = data;
72 node->parent = parent;
73 if (level) {
74 if (OBJ_obj2nid(data->valid_policy) == NID_any_policy) {
75 if (level->anyPolicy)
76 goto node_error;
77 level->anyPolicy = node;
78 } else {
79
80 if (level->nodes == NULL)
81 level->nodes = policy_node_cmp_new();
82 if (level->nodes == NULL) {
83 X509V3err(X509V3_F_LEVEL_ADD_NODE, ERR_R_MALLOC_FAILURE);
84 goto node_error;
85 }
86 if (!sk_X509_POLICY_NODE_push(level->nodes, node)) {
87 X509V3err(X509V3_F_LEVEL_ADD_NODE, ERR_R_MALLOC_FAILURE);
88 goto node_error;
89 }
90 }
91 }
92
93 if (tree) {
94 if (tree->extra_data == NULL)
95 tree->extra_data = sk_X509_POLICY_DATA_new_null();
96 if (tree->extra_data == NULL){
97 X509V3err(X509V3_F_LEVEL_ADD_NODE, ERR_R_MALLOC_FAILURE);
98 goto node_error;
99 }
100 if (!sk_X509_POLICY_DATA_push(tree->extra_data, data)) {
101 X509V3err(X509V3_F_LEVEL_ADD_NODE, ERR_R_MALLOC_FAILURE);
102 goto node_error;
103 }
104 }
105
106 if (parent)
107 parent->nchild++;
108
109 return node;
110
111 node_error:
112 policy_node_free(node);
113 return NULL;
114}
115
116void policy_node_free(X509_POLICY_NODE *node)
117{
118 OPENSSL_free(node);
119}
120
121/*
122 * See if a policy node matches a policy OID. If mapping enabled look through
123 * expected policy set otherwise just valid policy.
124 */
125
126int policy_node_match(const X509_POLICY_LEVEL *lvl,
127 const X509_POLICY_NODE *node, const ASN1_OBJECT *oid)
128{
129 int i;
130 ASN1_OBJECT *policy_oid;
131 const X509_POLICY_DATA *x = node->data;
132
133 if ((lvl->flags & X509_V_FLAG_INHIBIT_MAP)
134 || !(x->flags & POLICY_DATA_FLAG_MAP_MASK)) {
135 if (!OBJ_cmp(x->valid_policy, oid))
136 return 1;
137 return 0;
138 }
139
140 for (i = 0; i < sk_ASN1_OBJECT_num(x->expected_policy_set); i++) {
141 policy_oid = sk_ASN1_OBJECT_value(x->expected_policy_set, i);
142 if (!OBJ_cmp(policy_oid, oid))
143 return 1;
144 }
145 return 0;
146
147}
148