x509_vpm.c
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- /* x509_vpm.c */
- /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 <stdio.h>
- #include "cryptlib.h"
- #include <openssl/crypto.h>
- #include <openssl/lhash.h>
- #include <openssl/buffer.h>
- #include <openssl/x509.h>
- #include <openssl/x509v3.h>
- /* X509_VERIFY_PARAM functions */
- static void x509_verify_param_zero(X509_VERIFY_PARAM *param)
- {
- if (!param)
- return;
- param->name = NULL;
- param->purpose = 0;
- param->trust = 0;
- param->inh_flags = X509_VP_FLAG_DEFAULT;
- param->flags = 0;
- param->depth = -1;
- if (param->policies)
- {
- sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
- param->policies = NULL;
- }
- }
- X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)
- {
- X509_VERIFY_PARAM *param;
- param = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM));
- memset(param, 0, sizeof(X509_VERIFY_PARAM));
- x509_verify_param_zero(param);
- return param;
- }
- void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
- {
- x509_verify_param_zero(param);
- OPENSSL_free(param);
- }
- /* This function determines how parameters are "inherited" from one structure
- * to another. There are several different ways this can happen.
- *
- * 1. If a child structure needs to have its values initialized from a parent
- * they are simply copied across. For example SSL_CTX copied to SSL.
- * 2. If the structure should take on values only if they are currently unset.
- * For example the values in an SSL structure will take appropriate value
- * for SSL servers or clients but only if the application has not set new
- * ones.
- *
- * The "inh_flags" field determines how this function behaves.
- *
- * Normally any values which are set in the default are not copied from the
- * destination and verify flags are ORed together.
- *
- * If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied
- * to the destination. Effectively the values in "to" become default values
- * which will be used only if nothing new is set in "from".
- *
- * If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether
- * they are set or not. Flags is still Ored though.
- *
- * If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead
- * of ORed.
- *
- * If X509_VP_FLAG_LOCKED is set then no values are copied.
- *
- * If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed
- * after the next call.
- */
- /* Macro to test if a field should be copied from src to dest */
- #define test_x509_verify_param_copy(field, def)
- (to_overwrite ||
- ((src->field != def) && (to_default || (dest->field == def))))
- /* Macro to test and copy a field if necessary */
- #define x509_verify_param_copy(field, def)
- if (test_x509_verify_param_copy(field, def))
- dest->field = src->field
-
- int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest,
- const X509_VERIFY_PARAM *src)
- {
- unsigned long inh_flags;
- int to_default, to_overwrite;
- if (!src)
- return 1;
- inh_flags = dest->inh_flags | src->inh_flags;
- if (inh_flags & X509_VP_FLAG_ONCE)
- dest->inh_flags = 0;
- if (inh_flags & X509_VP_FLAG_LOCKED)
- return 1;
- if (inh_flags & X509_VP_FLAG_DEFAULT)
- to_default = 1;
- else
- to_default = 0;
- if (inh_flags & X509_VP_FLAG_OVERWRITE)
- to_overwrite = 1;
- else
- to_overwrite = 0;
- x509_verify_param_copy(purpose, 0);
- x509_verify_param_copy(trust, 0);
- x509_verify_param_copy(depth, -1);
- /* If overwrite or check time not set, copy across */
- if (to_overwrite || !(dest->flags & X509_V_FLAG_USE_CHECK_TIME))
- {
- dest->check_time = src->check_time;
- dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME;
- /* Don't need to copy flag: that is done below */
- }
- if (inh_flags & X509_VP_FLAG_RESET_FLAGS)
- dest->flags = 0;
- dest->flags |= src->flags;
- if (test_x509_verify_param_copy(policies, NULL))
- {
- if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies))
- return 0;
- }
- return 1;
- }
- int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
- const X509_VERIFY_PARAM *from)
- {
- to->inh_flags |= X509_VP_FLAG_DEFAULT;
- return X509_VERIFY_PARAM_inherit(to, from);
- }
- int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name)
- {
- if (param->name)
- OPENSSL_free(param->name);
- param->name = BUF_strdup(name);
- if (param->name)
- return 1;
- return 0;
- }
- int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags)
- {
- param->flags |= flags;
- if (flags & X509_V_FLAG_POLICY_MASK)
- param->flags |= X509_V_FLAG_POLICY_CHECK;
- return 1;
- }
- int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param, unsigned long flags)
- {
- param->flags &= ~flags;
- return 1;
- }
- unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param)
- {
- return param->flags;
- }
- int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)
- {
- return X509_PURPOSE_set(¶m->purpose, purpose);
- }
- int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)
- {
- return X509_TRUST_set(¶m->trust, trust);
- }
- void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)
- {
- param->depth = depth;
- }
- void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t)
- {
- param->check_time = t;
- param->flags |= X509_V_FLAG_USE_CHECK_TIME;
- }
- int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param, ASN1_OBJECT *policy)
- {
- if (!param->policies)
- {
- param->policies = sk_ASN1_OBJECT_new_null();
- if (!param->policies)
- return 0;
- }
- if (!sk_ASN1_OBJECT_push(param->policies, policy))
- return 0;
- return 1;
- }
- int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
- STACK_OF(ASN1_OBJECT) *policies)
- {
- int i;
- ASN1_OBJECT *oid, *doid;
- if (!param)
- return 0;
- if (param->policies)
- sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
- if (!policies)
- {
- param->policies = NULL;
- return 1;
- }
- param->policies = sk_ASN1_OBJECT_new_null();
- if (!param->policies)
- return 0;
- for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++)
- {
- oid = sk_ASN1_OBJECT_value(policies, i);
- doid = OBJ_dup(oid);
- if (!doid)
- return 0;
- if (!sk_ASN1_OBJECT_push(param->policies, doid))
- {
- ASN1_OBJECT_free(doid);
- return 0;
- }
- }
- param->flags |= X509_V_FLAG_POLICY_CHECK;
- return 1;
- }
- int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param)
- {
- return param->depth;
- }
- /* Default verify parameters: these are used for various
- * applications and can be overridden by the user specified table.
- * NB: the 'name' field *must* be in alphabetical order because it
- * will be searched using OBJ_search.
- */
- static const X509_VERIFY_PARAM default_table[] = {
- {
- "default", /* X509 default parameters */
- 0, /* Check time */
- 0, /* internal flags */
- 0, /* flags */
- 0, /* purpose */
- 0, /* trust */
- 9, /* depth */
- NULL /* policies */
- },
- {
- "pkcs7", /* SSL/TLS client parameters */
- 0, /* Check time */
- 0, /* internal flags */
- 0, /* flags */
- X509_PURPOSE_SMIME_SIGN, /* purpose */
- X509_TRUST_EMAIL, /* trust */
- -1, /* depth */
- NULL /* policies */
- },
- {
- "ssl_client", /* SSL/TLS client parameters */
- 0, /* Check time */
- 0, /* internal flags */
- 0, /* flags */
- X509_PURPOSE_SSL_CLIENT, /* purpose */
- X509_TRUST_SSL_CLIENT, /* trust */
- -1, /* depth */
- NULL /* policies */
- },
- {
- "ssl_server", /* SSL/TLS server parameters */
- 0, /* Check time */
- 0, /* internal flags */
- 0, /* flags */
- X509_PURPOSE_SSL_SERVER, /* purpose */
- X509_TRUST_SSL_SERVER, /* trust */
- -1, /* depth */
- NULL /* policies */
- }};
- static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;
- static int table_cmp(const void *pa, const void *pb)
- {
- const X509_VERIFY_PARAM *a = pa, *b = pb;
- return strcmp(a->name, b->name);
- }
- static int param_cmp(const X509_VERIFY_PARAM * const *a,
- const X509_VERIFY_PARAM * const *b)
- {
- return strcmp((*a)->name, (*b)->name);
- }
- int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)
- {
- int idx;
- X509_VERIFY_PARAM *ptmp;
- if (!param_table)
- {
- param_table = sk_X509_VERIFY_PARAM_new(param_cmp);
- if (!param_table)
- return 0;
- }
- else
- {
- idx = sk_X509_VERIFY_PARAM_find(param_table, param);
- if (idx != -1)
- {
- ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx);
- X509_VERIFY_PARAM_free(ptmp);
- sk_X509_VERIFY_PARAM_delete(param_table, idx);
- }
- }
- if (!sk_X509_VERIFY_PARAM_push(param_table, param))
- return 0;
- return 1;
- }
- const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name)
- {
- int idx;
- X509_VERIFY_PARAM pm;
- pm.name = (char *)name;
- if (param_table)
- {
- idx = sk_X509_VERIFY_PARAM_find(param_table, &pm);
- if (idx != -1)
- return sk_X509_VERIFY_PARAM_value(param_table, idx);
- }
- return (const X509_VERIFY_PARAM *) OBJ_bsearch((char *)&pm,
- (char *)&default_table,
- sizeof(default_table)/sizeof(X509_VERIFY_PARAM),
- sizeof(X509_VERIFY_PARAM),
- table_cmp);
- }
- void X509_VERIFY_PARAM_table_cleanup(void)
- {
- if (param_table)
- sk_X509_VERIFY_PARAM_pop_free(param_table,
- X509_VERIFY_PARAM_free);
- param_table = NULL;
- }