2 * Copyright 2004-2020 The OpenSSL Project Authors. All Rights Reserved.
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
10 #include "internal/cryptlib.h"
11 #include <openssl/x509.h>
12 #include <openssl/x509v3.h>
13 #include "crypto/x509.h"
15 #include "pcy_local.h"
17 DEFINE_STACK_OF(POLICYINFO)
19 static int policy_data_cmp(const X509_POLICY_DATA *const *a,
20 const X509_POLICY_DATA *const *b);
21 static int policy_cache_set_int(long *out, ASN1_INTEGER *value);
24 * Set cache entry according to CertificatePolicies extension. Note: this
25 * destroys the passed CERTIFICATEPOLICIES structure.
28 static int policy_cache_create(X509 *x,
29 CERTIFICATEPOLICIES *policies, int crit)
32 X509_POLICY_CACHE *cache = x->policy_cache;
33 X509_POLICY_DATA *data = NULL;
36 if ((num = sk_POLICYINFO_num(policies)) <= 0)
38 cache->data = sk_X509_POLICY_DATA_new(policy_data_cmp);
39 if (cache->data == NULL) {
40 X509V3err(X509V3_F_POLICY_CACHE_CREATE, ERR_R_MALLOC_FAILURE);
43 for (i = 0; i < num; i++) {
44 policy = sk_POLICYINFO_value(policies, i);
45 data = policy_data_new(policy, NULL, crit);
47 X509V3err(X509V3_F_POLICY_CACHE_CREATE, ERR_R_MALLOC_FAILURE);
51 * Duplicate policy OIDs are illegal: reject if matches found.
53 if (OBJ_obj2nid(data->valid_policy) == NID_any_policy) {
54 if (cache->anyPolicy) {
58 cache->anyPolicy = data;
59 } else if (sk_X509_POLICY_DATA_find(cache->data, data) >=0 ) {
62 } else if (!sk_X509_POLICY_DATA_push(cache->data, data)) {
63 X509V3err(X509V3_F_POLICY_CACHE_CREATE, ERR_R_MALLOC_FAILURE);
72 x->ex_flags |= EXFLAG_INVALID_POLICY;
73 policy_data_free(data);
75 sk_POLICYINFO_pop_free(policies, POLICYINFO_free);
77 sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free);
83 static int policy_cache_new(X509 *x)
85 X509_POLICY_CACHE *cache;
86 ASN1_INTEGER *ext_any = NULL;
87 POLICY_CONSTRAINTS *ext_pcons = NULL;
88 CERTIFICATEPOLICIES *ext_cpols = NULL;
89 POLICY_MAPPINGS *ext_pmaps = NULL;
92 if (x->policy_cache != NULL)
94 cache = OPENSSL_malloc(sizeof(*cache));
96 X509V3err(X509V3_F_POLICY_CACHE_NEW, ERR_R_MALLOC_FAILURE);
99 cache->anyPolicy = NULL;
101 cache->any_skip = -1;
102 cache->explicit_skip = -1;
103 cache->map_skip = -1;
105 x->policy_cache = cache;
108 * Handle requireExplicitPolicy *first*. Need to process this even if we
109 * don't have any policies.
111 ext_pcons = X509_get_ext_d2i(x, NID_policy_constraints, &i, NULL);
117 if (!ext_pcons->requireExplicitPolicy
118 && !ext_pcons->inhibitPolicyMapping)
120 if (!policy_cache_set_int(&cache->explicit_skip,
121 ext_pcons->requireExplicitPolicy))
123 if (!policy_cache_set_int(&cache->map_skip,
124 ext_pcons->inhibitPolicyMapping))
128 /* Process CertificatePolicies */
130 ext_cpols = X509_get_ext_d2i(x, NID_certificate_policies, &i, NULL);
132 * If no CertificatePolicies extension or problem decoding then there is
133 * no point continuing because the valid policies will be NULL.
136 /* If not absent some problem with extension */
142 i = policy_cache_create(x, ext_cpols, i);
144 /* NB: ext_cpols freed by policy_cache_set_policies */
149 ext_pmaps = X509_get_ext_d2i(x, NID_policy_mappings, &i, NULL);
152 /* If not absent some problem with extension */
156 i = policy_cache_set_mapping(x, ext_pmaps);
161 ext_any = X509_get_ext_d2i(x, NID_inhibit_any_policy, &i, NULL);
166 } else if (!policy_cache_set_int(&cache->any_skip, ext_any))
171 x->ex_flags |= EXFLAG_INVALID_POLICY;
174 POLICY_CONSTRAINTS_free(ext_pcons);
175 ASN1_INTEGER_free(ext_any);
180 void policy_cache_free(X509_POLICY_CACHE *cache)
184 policy_data_free(cache->anyPolicy);
185 sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free);
189 const X509_POLICY_CACHE *policy_cache_set(X509 *x)
192 if (x->policy_cache == NULL) {
193 CRYPTO_THREAD_write_lock(x->lock);
195 CRYPTO_THREAD_unlock(x->lock);
198 return x->policy_cache;
202 X509_POLICY_DATA *policy_cache_find_data(const X509_POLICY_CACHE *cache,
203 const ASN1_OBJECT *id)
206 X509_POLICY_DATA tmp;
207 tmp.valid_policy = (ASN1_OBJECT *)id;
208 idx = sk_X509_POLICY_DATA_find(cache->data, &tmp);
209 return sk_X509_POLICY_DATA_value(cache->data, idx);
212 static int policy_data_cmp(const X509_POLICY_DATA *const *a,
213 const X509_POLICY_DATA *const *b)
215 return OBJ_cmp((*a)->valid_policy, (*b)->valid_policy);
218 static int policy_cache_set_int(long *out, ASN1_INTEGER *value)
222 if (value->type == V_ASN1_NEG_INTEGER)
224 *out = ASN1_INTEGER_get(value);