2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2004 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
62 #include <openssl/crypto.h>
63 #include <openssl/lhash.h>
64 #include <openssl/buffer.h>
65 #include <openssl/x509.h>
66 #include <openssl/x509v3.h>
68 /* X509_VERIFY_PARAM functions */
70 static void x509_verify_param_zero(X509_VERIFY_PARAM *param)
77 param->inh_flags = X509_VP_FLAG_DEFAULT;
82 sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
83 param->policies = NULL;
87 X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)
89 X509_VERIFY_PARAM *param;
90 param = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM));
91 memset(param, 0, sizeof(X509_VERIFY_PARAM));
92 x509_verify_param_zero(param);
96 void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
98 x509_verify_param_zero(param);
102 /* This function determines how parameters are "inherited" from one structure
103 * to another. There are several different ways this can happen.
105 * 1. If a child structure needs to have its values initialized from a parent
106 * they are simply copied across. For example SSL_CTX copied to SSL.
107 * 2. If the structure should take on values only if they are currently unset.
108 * For example the values in an SSL structure will take appropriate value
109 * for SSL servers or clients but only if the application has not set new
112 * The "inh_flags" field determines how this function behaves.
114 * Normally any values which are set in the default are not copied from the
115 * destination and verify flags are ORed together.
117 * If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied
118 * to the destination. Effectively the values in "to" become default values
119 * which will be used only if nothing new is set in "from".
121 * If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether
122 * they are set or not. Flags is still Ored though.
124 * If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead
127 * If X509_VP_FLAG_LOCKED is set then no values are copied.
129 * If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed
130 * after the next call.
133 /* Macro to test if a field should be copied from src to dest */
135 #define test_x509_verify_param_copy(field, def) \
137 ((src->field != def) && (to_default || (dest->field == def))))
139 /* Macro to test and copy a field if necessary */
141 #define x509_verify_param_copy(field, def) \
142 if (test_x509_verify_param_copy(field, def)) \
143 dest->field = src->field
146 int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest,
147 const X509_VERIFY_PARAM *src)
149 unsigned long inh_flags;
150 int to_default, to_overwrite;
153 inh_flags = dest->inh_flags | src->inh_flags;
155 if (inh_flags & X509_VP_FLAG_ONCE)
158 if (inh_flags & X509_VP_FLAG_LOCKED)
161 if (inh_flags & X509_VP_FLAG_DEFAULT)
166 if (inh_flags & X509_VP_FLAG_OVERWRITE)
171 x509_verify_param_copy(purpose, 0);
172 x509_verify_param_copy(trust, 0);
173 x509_verify_param_copy(depth, -1);
175 /* If overwrite or check time not set, copy across */
177 if (to_overwrite || !(dest->flags & X509_V_FLAG_USE_CHECK_TIME))
179 dest->check_time = src->check_time;
180 dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME;
181 /* Don't need to copy flag: that is done below */
184 if (inh_flags & X509_VP_FLAG_RESET_FLAGS)
187 dest->flags |= src->flags;
189 if (test_x509_verify_param_copy(policies, NULL))
191 if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies))
198 int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
199 const X509_VERIFY_PARAM *from)
201 to->inh_flags |= X509_VP_FLAG_DEFAULT;
202 return X509_VERIFY_PARAM_inherit(to, from);
205 int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name)
208 OPENSSL_free(param->name);
209 param->name = BUF_strdup(name);
215 int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags)
217 param->flags |= flags;
218 if (flags & X509_V_FLAG_POLICY_MASK)
219 param->flags |= X509_V_FLAG_POLICY_CHECK;
223 int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param, unsigned long flags)
225 param->flags &= ~flags;
229 unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param)
234 int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)
236 return X509_PURPOSE_set(¶m->purpose, purpose);
239 int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)
241 return X509_TRUST_set(¶m->trust, trust);
244 void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)
246 param->depth = depth;
249 void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t)
251 param->check_time = t;
252 param->flags |= X509_V_FLAG_USE_CHECK_TIME;
255 int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param, ASN1_OBJECT *policy)
257 if (!param->policies)
259 param->policies = sk_ASN1_OBJECT_new_null();
260 if (!param->policies)
263 if (!sk_ASN1_OBJECT_push(param->policies, policy))
268 int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
269 STACK_OF(ASN1_OBJECT) *policies)
272 ASN1_OBJECT *oid, *doid;
276 sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
280 param->policies = NULL;
284 param->policies = sk_ASN1_OBJECT_new_null();
285 if (!param->policies)
288 for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++)
290 oid = sk_ASN1_OBJECT_value(policies, i);
294 if (!sk_ASN1_OBJECT_push(param->policies, doid))
296 ASN1_OBJECT_free(doid);
300 param->flags |= X509_V_FLAG_POLICY_CHECK;
304 int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param)
309 /* Default verify parameters: these are used for various
310 * applications and can be overridden by the user specified table.
311 * NB: the 'name' field *must* be in alphabetical order because it
312 * will be searched using OBJ_search.
315 static const X509_VERIFY_PARAM default_table[] = {
317 "default", /* X509 default parameters */
319 0, /* internal flags */
327 "pkcs7", /* SSL/TLS client parameters */
329 0, /* internal flags */
331 X509_PURPOSE_SMIME_SIGN, /* purpose */
332 X509_TRUST_EMAIL, /* trust */
337 "ssl_client", /* SSL/TLS client parameters */
339 0, /* internal flags */
341 X509_PURPOSE_SSL_CLIENT, /* purpose */
342 X509_TRUST_SSL_CLIENT, /* trust */
347 "ssl_server", /* SSL/TLS server parameters */
349 0, /* internal flags */
351 X509_PURPOSE_SSL_SERVER, /* purpose */
352 X509_TRUST_SSL_SERVER, /* trust */
357 static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;
359 static int table_cmp(const void *pa, const void *pb)
361 const X509_VERIFY_PARAM *a = pa, *b = pb;
362 return strcmp(a->name, b->name);
365 static int param_cmp(const X509_VERIFY_PARAM * const *a,
366 const X509_VERIFY_PARAM * const *b)
368 return strcmp((*a)->name, (*b)->name);
371 int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)
374 X509_VERIFY_PARAM *ptmp;
377 param_table = sk_X509_VERIFY_PARAM_new(param_cmp);
383 idx = sk_X509_VERIFY_PARAM_find(param_table, param);
386 ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx);
387 X509_VERIFY_PARAM_free(ptmp);
388 (void)sk_X509_VERIFY_PARAM_delete(param_table, idx);
391 if (!sk_X509_VERIFY_PARAM_push(param_table, param))
396 const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name)
399 X509_VERIFY_PARAM pm;
400 pm.name = (char *)name;
403 idx = sk_X509_VERIFY_PARAM_find(param_table, &pm);
405 return sk_X509_VERIFY_PARAM_value(param_table, idx);
407 return (const X509_VERIFY_PARAM *) OBJ_bsearch((char *)&pm,
408 (char *)&default_table,
409 sizeof(default_table)/sizeof(X509_VERIFY_PARAM),
410 sizeof(X509_VERIFY_PARAM),
414 void X509_VERIFY_PARAM_table_cleanup(void)
417 sk_X509_VERIFY_PARAM_pop_free(param_table,
418 X509_VERIFY_PARAM_free);