1 /* 2 * Copyright 2004-2023 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 typedef struct X509_POLICY_DATA_st X509_POLICY_DATA; 11 12 DEFINE_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 23 struct 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 65 struct 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 90 struct 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 99 struct 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 }; 112 113 struct X509_POLICY_TREE_st { 114 /* The number of nodes in the tree */ 115 size_t node_count; 116 /* The maximum number of nodes in the tree */ 117 size_t node_maximum; 118 119 /* This is the tree 'level' data */ 120 X509_POLICY_LEVEL *levels; 121 int nlevel; 122 /* 123 * Extra policy data when additional nodes (not from the certificate) are 124 * required. 125 */ 126 STACK_OF(X509_POLICY_DATA) *extra_data; 127 /* This is the authority constrained policy set */ 128 STACK_OF(X509_POLICY_NODE) *auth_policies; 129 STACK_OF(X509_POLICY_NODE) *user_policies; 130 unsigned int flags; 131 }; 132 133 /* Set if anyPolicy present in user policies */ 134 #define POLICY_FLAG_ANY_POLICY 0x2 135 136 /* Useful macros */ 137 138 #define node_data_critical(data) (data->flags & POLICY_DATA_FLAG_CRITICAL) 139 #define node_critical(node) node_data_critical(node->data) 140 141 /* Internal functions */ 142 143 X509_POLICY_DATA *ossl_policy_data_new(POLICYINFO *policy, const ASN1_OBJECT *id, 144 int crit); 145 void ossl_policy_data_free(X509_POLICY_DATA *data); 146 147 X509_POLICY_DATA *ossl_policy_cache_find_data(const X509_POLICY_CACHE *cache, 148 const ASN1_OBJECT *id); 149 int ossl_policy_cache_set_mapping(X509 *x, POLICY_MAPPINGS *maps); 150 151 STACK_OF(X509_POLICY_NODE) *ossl_policy_node_cmp_new(void); 152 153 void ossl_policy_cache_free(X509_POLICY_CACHE *cache); 154 155 X509_POLICY_NODE *ossl_policy_level_find_node(const X509_POLICY_LEVEL *level, 156 const X509_POLICY_NODE *parent, 157 const ASN1_OBJECT *id); 158 159 X509_POLICY_NODE *ossl_policy_tree_find_sk(STACK_OF(X509_POLICY_NODE) *sk, 160 const ASN1_OBJECT *id); 161 162 X509_POLICY_NODE *ossl_policy_level_add_node(X509_POLICY_LEVEL *level, 163 X509_POLICY_DATA *data, 164 X509_POLICY_NODE *parent, 165 X509_POLICY_TREE *tree, 166 int extra_data); 167 void ossl_policy_node_free(X509_POLICY_NODE *node); 168 int ossl_policy_node_match(const X509_POLICY_LEVEL *lvl, 169 const X509_POLICY_NODE *node, const ASN1_OBJECT *oid); 170 171 const X509_POLICY_CACHE *ossl_policy_cache_set(X509 *x); 172