1/*
2 * Copyright 2004-2016 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
10typedef struct X509_POLICY_DATA_st X509_POLICY_DATA;
11
12DEFINE_STACK_OF(X509_POLICY_DATA)
13
14/* Internal structures */
15
16/*
17 * This structure and the field names correspond to the Policy 'node' of
18 * RFC3280. NB this structure contains no pointers to parent or child data:
19 * X509_POLICY_NODE contains that. This means that the main policy data can
20 * be kept static and cached with the certificate.
21 */
22
23struct X509_POLICY_DATA_st {
24 unsigned int flags;
25 /* Policy OID and qualifiers for this data */
26 ASN1_OBJECT *valid_policy;
27 STACK_OF(POLICYQUALINFO) *qualifier_set;
28 STACK_OF(ASN1_OBJECT) *expected_policy_set;
29};
30
31/* X509_POLICY_DATA flags values */
32
33/*
34 * This flag indicates the structure has been mapped using a policy mapping
35 * extension. If policy mapping is not active its references get deleted.
36 */
37
38#define POLICY_DATA_FLAG_MAPPED 0x1
39
40/*
41 * This flag indicates the data doesn't correspond to a policy in Certificate
42 * Policies: it has been mapped to any policy.
43 */
44
45#define POLICY_DATA_FLAG_MAPPED_ANY 0x2
46
47/* AND with flags to see if any mapping has occurred */
48
49#define POLICY_DATA_FLAG_MAP_MASK 0x3
50
51/* qualifiers are shared and shouldn't be freed */
52
53#define POLICY_DATA_FLAG_SHARED_QUALIFIERS 0x4
54
55/* Parent node is an extra node and should be freed */
56
57#define POLICY_DATA_FLAG_EXTRA_NODE 0x8
58
59/* Corresponding CertificatePolicies is critical */
60
61#define POLICY_DATA_FLAG_CRITICAL 0x10
62
63/* This structure is cached with a certificate */
64
65struct X509_POLICY_CACHE_st {
66 /* anyPolicy data or NULL if no anyPolicy */
67 X509_POLICY_DATA *anyPolicy;
68 /* other policy data */
69 STACK_OF(X509_POLICY_DATA) *data;
70 /* If InhibitAnyPolicy present this is its value or -1 if absent. */
71 long any_skip;
72 /*
73 * If policyConstraints and requireExplicitPolicy present this is its
74 * value or -1 if absent.
75 */
76 long explicit_skip;
77 /*
78 * If policyConstraints and policyMapping present this is its value or -1
79 * if absent.
80 */
81 long map_skip;
82};
83
84/*
85 * #define POLICY_CACHE_FLAG_CRITICAL POLICY_DATA_FLAG_CRITICAL
86 */
87
88/* This structure represents the relationship between nodes */
89
90struct X509_POLICY_NODE_st {
91 /* node data this refers to */
92 const X509_POLICY_DATA *data;
93 /* Parent node */
94 X509_POLICY_NODE *parent;
95 /* Number of child nodes */
96 int nchild;
97};
98
99struct X509_POLICY_LEVEL_st {
100 /* Cert for this level */
101 X509 *cert;
102 /* nodes at this level */
103 STACK_OF(X509_POLICY_NODE) *nodes;
104 /* anyPolicy node */
105 X509_POLICY_NODE *anyPolicy;
106 /* Extra data */
107 /*
108 * STACK_OF(X509_POLICY_DATA) *extra_data;
109 */
110 unsigned int flags;
111};
112
113struct X509_POLICY_TREE_st {
114 /* This is the tree 'level' data */
115 X509_POLICY_LEVEL *levels;
116 int nlevel;
117 /*
118 * Extra policy data when additional nodes (not from the certificate) are
119 * required.
120 */
121 STACK_OF(X509_POLICY_DATA) *extra_data;
122 /* This is the authority constrained policy set */
123 STACK_OF(X509_POLICY_NODE) *auth_policies;
124 STACK_OF(X509_POLICY_NODE) *user_policies;
125 unsigned int flags;
126};
127
128/* Set if anyPolicy present in user policies */
129#define POLICY_FLAG_ANY_POLICY 0x2
130
131/* Useful macros */
132
133#define node_data_critical(data) (data->flags & POLICY_DATA_FLAG_CRITICAL)
134#define node_critical(node) node_data_critical(node->data)
135
136/* Internal functions */
137
138X509_POLICY_DATA *policy_data_new(POLICYINFO *policy, const ASN1_OBJECT *id,
139 int crit);
140void policy_data_free(X509_POLICY_DATA *data);
141
142X509_POLICY_DATA *policy_cache_find_data(const X509_POLICY_CACHE *cache,
143 const ASN1_OBJECT *id);
144int policy_cache_set_mapping(X509 *x, POLICY_MAPPINGS *maps);
145
146STACK_OF(X509_POLICY_NODE) *policy_node_cmp_new(void);
147
148void policy_cache_init(void);
149
150void policy_cache_free(X509_POLICY_CACHE *cache);
151
152X509_POLICY_NODE *level_find_node(const X509_POLICY_LEVEL *level,
153 const X509_POLICY_NODE *parent,
154 const ASN1_OBJECT *id);
155
156X509_POLICY_NODE *tree_find_sk(STACK_OF(X509_POLICY_NODE) *sk,
157 const ASN1_OBJECT *id);
158
159X509_POLICY_NODE *level_add_node(X509_POLICY_LEVEL *level,
160 X509_POLICY_DATA *data,
161 X509_POLICY_NODE *parent,
162 X509_POLICY_TREE *tree);
163void policy_node_free(X509_POLICY_NODE *node);
164int policy_node_match(const X509_POLICY_LEVEL *lvl,
165 const X509_POLICY_NODE *node, const ASN1_OBJECT *oid);
166
167const X509_POLICY_CACHE *policy_cache_set(X509 *x);
168