2 * Copyright 2004-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (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 "internal/x509_int.h"
17 static int policy_data_cmp(const X509_POLICY_DATA *const *a,
18 const X509_POLICY_DATA *const *b);
19 static int policy_cache_set_int(long *out, ASN1_INTEGER *value);
22 * Set cache entry according to CertificatePolicies extension. Note: this
23 * destroys the passed CERTIFICATEPOLICIES structure.
26 static int policy_cache_create(X509 *x,
27 CERTIFICATEPOLICIES *policies, int crit)
30 X509_POLICY_CACHE *cache = x->policy_cache;
31 X509_POLICY_DATA *data = NULL;
34 if ((num = sk_POLICYINFO_num(policies)) <= 0)
36 cache->data = sk_X509_POLICY_DATA_new(policy_data_cmp);
37 if (cache->data == NULL) {
38 X509V3err(X509V3_F_POLICY_CACHE_CREATE, ERR_R_MALLOC_FAILURE);
41 for (i = 0; i < num; i++) {
42 policy = sk_POLICYINFO_value(policies, i);
43 data = policy_data_new(policy, NULL, crit);
45 X509V3err(X509V3_F_POLICY_CACHE_CREATE, ERR_R_MALLOC_FAILURE);
49 * Duplicate policy OIDs are illegal: reject if matches found.
51 if (OBJ_obj2nid(data->valid_policy) == NID_any_policy) {
52 if (cache->anyPolicy) {
56 cache->anyPolicy = data;
57 } else if (sk_X509_POLICY_DATA_find(cache->data, data) >=0 ) {
60 } else if (!sk_X509_POLICY_DATA_push(cache->data, data)) {
61 X509V3err(X509V3_F_POLICY_CACHE_CREATE, ERR_R_MALLOC_FAILURE);
70 x->ex_flags |= EXFLAG_INVALID_POLICY;
71 policy_data_free(data);
73 sk_POLICYINFO_pop_free(policies, POLICYINFO_free);
75 sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free);
81 static int policy_cache_new(X509 *x)
83 X509_POLICY_CACHE *cache;
84 ASN1_INTEGER *ext_any = NULL;
85 POLICY_CONSTRAINTS *ext_pcons = NULL;
86 CERTIFICATEPOLICIES *ext_cpols = NULL;
87 POLICY_MAPPINGS *ext_pmaps = NULL;
90 if (x->policy_cache != NULL)
92 cache = OPENSSL_malloc(sizeof(*cache));
94 X509V3err(X509V3_F_POLICY_CACHE_NEW, ERR_R_MALLOC_FAILURE);
97 cache->anyPolicy = NULL;
100 cache->explicit_skip = -1;
101 cache->map_skip = -1;
103 x->policy_cache = cache;
106 * Handle requireExplicitPolicy *first*. Need to process this even if we
107 * don't have any policies.
109 ext_pcons = X509_get_ext_d2i(x, NID_policy_constraints, &i, NULL);
115 if (!ext_pcons->requireExplicitPolicy
116 && !ext_pcons->inhibitPolicyMapping)
118 if (!policy_cache_set_int(&cache->explicit_skip,
119 ext_pcons->requireExplicitPolicy))
121 if (!policy_cache_set_int(&cache->map_skip,
122 ext_pcons->inhibitPolicyMapping))
126 /* Process CertificatePolicies */
128 ext_cpols = X509_get_ext_d2i(x, NID_certificate_policies, &i, NULL);
130 * If no CertificatePolicies extension or problem decoding then there is
131 * no point continuing because the valid policies will be NULL.
134 /* If not absent some problem with extension */
140 i = policy_cache_create(x, ext_cpols, i);
142 /* NB: ext_cpols freed by policy_cache_set_policies */
147 ext_pmaps = X509_get_ext_d2i(x, NID_policy_mappings, &i, NULL);
150 /* If not absent some problem with extension */
154 i = policy_cache_set_mapping(x, ext_pmaps);
159 ext_any = X509_get_ext_d2i(x, NID_inhibit_any_policy, &i, NULL);
164 } else if (!policy_cache_set_int(&cache->any_skip, ext_any))
169 x->ex_flags |= EXFLAG_INVALID_POLICY;
172 POLICY_CONSTRAINTS_free(ext_pcons);
173 ASN1_INTEGER_free(ext_any);
178 void policy_cache_free(X509_POLICY_CACHE *cache)
182 policy_data_free(cache->anyPolicy);
183 sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free);
187 const X509_POLICY_CACHE *policy_cache_set(X509 *x)
190 if (x->policy_cache == NULL) {
191 CRYPTO_THREAD_write_lock(x->lock);
193 CRYPTO_THREAD_unlock(x->lock);
196 return x->policy_cache;
200 X509_POLICY_DATA *policy_cache_find_data(const X509_POLICY_CACHE *cache,
201 const ASN1_OBJECT *id)
204 X509_POLICY_DATA tmp;
205 tmp.valid_policy = (ASN1_OBJECT *)id;
206 idx = sk_X509_POLICY_DATA_find(cache->data, &tmp);
207 return sk_X509_POLICY_DATA_value(cache->data, idx);
210 static int policy_data_cmp(const X509_POLICY_DATA *const *a,
211 const X509_POLICY_DATA *const *b)
213 return OBJ_cmp((*a)->valid_policy, (*b)->valid_policy);
216 static int policy_cache_set_int(long *out, ASN1_INTEGER *value)
220 if (value->type == V_ASN1_NEG_INTEGER)
222 *out = ASN1_INTEGER_get(value);