diff options
Diffstat (limited to 'openssl/crypto/x509v3/pcy_cache.c')
| -rw-r--r-- | openssl/crypto/x509v3/pcy_cache.c | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/openssl/crypto/x509v3/pcy_cache.c b/openssl/crypto/x509v3/pcy_cache.c new file mode 100644 index 000000000..1030931b7 --- /dev/null +++ b/openssl/crypto/x509v3/pcy_cache.c @@ -0,0 +1,287 @@ +/* pcy_cache.c */ +/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL + * project 2004. + */ +/* ==================================================================== + * Copyright (c) 2004 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include "cryptlib.h" +#include <openssl/x509.h> +#include <openssl/x509v3.h> + +#include "pcy_int.h" + +static int policy_data_cmp(const X509_POLICY_DATA * const *a, + const X509_POLICY_DATA * const *b); +static int policy_cache_set_int(long *out, ASN1_INTEGER *value); + +/* Set cache entry according to CertificatePolicies extension. + * Note: this destroys the passed CERTIFICATEPOLICIES structure. + */ + +static int policy_cache_create(X509 *x, + CERTIFICATEPOLICIES *policies, int crit) + { + int i; + int ret = 0; + X509_POLICY_CACHE *cache = x->policy_cache; + X509_POLICY_DATA *data = NULL; + POLICYINFO *policy; + if (sk_POLICYINFO_num(policies) == 0) + goto bad_policy; + cache->data = sk_X509_POLICY_DATA_new(policy_data_cmp); + if (!cache->data) + goto bad_policy; + for (i = 0; i < sk_POLICYINFO_num(policies); i++) + { + policy = sk_POLICYINFO_value(policies, i); + data = policy_data_new(policy, NULL, crit); + if (!data) + goto bad_policy; + /* Duplicate policy OIDs are illegal: reject if matches + * found. + */ + if (OBJ_obj2nid(data->valid_policy) == NID_any_policy) + { + if (cache->anyPolicy) + { + ret = -1; + goto bad_policy; + } + cache->anyPolicy = data; + } + else if (sk_X509_POLICY_DATA_find(cache->data, data) != -1) + { + ret = -1; + goto bad_policy; + } + else if (!sk_X509_POLICY_DATA_push(cache->data, data)) + goto bad_policy; + data = NULL; + } + ret = 1; + bad_policy: + if (ret == -1) + x->ex_flags |= EXFLAG_INVALID_POLICY; + if (data) + policy_data_free(data); + sk_POLICYINFO_pop_free(policies, POLICYINFO_free); + if (ret <= 0) + { + sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free); + cache->data = NULL; + } + return ret; + } + + +static int policy_cache_new(X509 *x) + { + X509_POLICY_CACHE *cache; + ASN1_INTEGER *ext_any = NULL; + POLICY_CONSTRAINTS *ext_pcons = NULL; + CERTIFICATEPOLICIES *ext_cpols = NULL; + POLICY_MAPPINGS *ext_pmaps = NULL; + int i; + cache = OPENSSL_malloc(sizeof(X509_POLICY_CACHE)); + if (!cache) + return 0; + cache->anyPolicy = NULL; + cache->data = NULL; + cache->maps = NULL; + cache->any_skip = -1; + cache->explicit_skip = -1; + cache->map_skip = -1; + + x->policy_cache = cache; + + /* Handle requireExplicitPolicy *first*. Need to process this + * even if we don't have any policies. + */ + ext_pcons = X509_get_ext_d2i(x, NID_policy_constraints, &i, NULL); + + if (!ext_pcons) + { + if (i != -1) + goto bad_cache; + } + else + { + if (!ext_pcons->requireExplicitPolicy + && !ext_pcons->inhibitPolicyMapping) + goto bad_cache; + if (!policy_cache_set_int(&cache->explicit_skip, + ext_pcons->requireExplicitPolicy)) + goto bad_cache; + if (!policy_cache_set_int(&cache->map_skip, + ext_pcons->inhibitPolicyMapping)) + goto bad_cache; + } + + /* Process CertificatePolicies */ + + ext_cpols = X509_get_ext_d2i(x, NID_certificate_policies, &i, NULL); + /* If no CertificatePolicies extension or problem decoding then + * there is no point continuing because the valid policies will be + * NULL. + */ + if (!ext_cpols) + { + /* If not absent some problem with extension */ + if (i != -1) + goto bad_cache; + return 1; + } + + i = policy_cache_create(x, ext_cpols, i); + + /* NB: ext_cpols freed by policy_cache_set_policies */ + + if (i <= 0) + return i; + + ext_pmaps = X509_get_ext_d2i(x, NID_policy_mappings, &i, NULL); + + if (!ext_pmaps) + { + /* If not absent some problem with extension */ + if (i != -1) + goto bad_cache; + } + else + { + i = policy_cache_set_mapping(x, ext_pmaps); + if (i <= 0) + goto bad_cache; + } + + ext_any = X509_get_ext_d2i(x, NID_inhibit_any_policy, &i, NULL); + + if (!ext_any) + { + if (i != -1) + goto bad_cache; + } + else if (!policy_cache_set_int(&cache->any_skip, ext_any)) + goto bad_cache; + + if (0) + { + bad_cache: + x->ex_flags |= EXFLAG_INVALID_POLICY; + } + + if(ext_pcons) + POLICY_CONSTRAINTS_free(ext_pcons); + + if (ext_any) + ASN1_INTEGER_free(ext_any); + + return 1; + + +} + +void policy_cache_free(X509_POLICY_CACHE *cache) + { + if (!cache) + return; + if (cache->anyPolicy) + policy_data_free(cache->anyPolicy); + if (cache->data) + sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free); + OPENSSL_free(cache); + } + +const X509_POLICY_CACHE *policy_cache_set(X509 *x) + { + + if (x->policy_cache == NULL) + { + CRYPTO_w_lock(CRYPTO_LOCK_X509); + policy_cache_new(x); + CRYPTO_w_unlock(CRYPTO_LOCK_X509); + } + + return x->policy_cache; + + } + +X509_POLICY_DATA *policy_cache_find_data(const X509_POLICY_CACHE *cache, + const ASN1_OBJECT *id) + { + int idx; + X509_POLICY_DATA tmp; + tmp.valid_policy = (ASN1_OBJECT *)id; + idx = sk_X509_POLICY_DATA_find(cache->data, &tmp); + if (idx == -1) + return NULL; + return sk_X509_POLICY_DATA_value(cache->data, idx); + } + +static int policy_data_cmp(const X509_POLICY_DATA * const *a, + const X509_POLICY_DATA * const *b) + { + return OBJ_cmp((*a)->valid_policy, (*b)->valid_policy); + } + +static int policy_cache_set_int(long *out, ASN1_INTEGER *value) + { + if (value == NULL) + return 1; + if (value->type == V_ASN1_NEG_INTEGER) + return 0; + *out = ASN1_INTEGER_get(value); + return 1; + } |