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 X509_VERIFY_PARAM
*a
, const X509_VERIFY_PARAM
*b
)
362 return strcmp(a
->name
, b
->name
);
365 DECLARE_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM
, X509_VERIFY_PARAM
,
367 IMPLEMENT_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM
, X509_VERIFY_PARAM
,
370 static int param_cmp(const X509_VERIFY_PARAM
* const *a
,
371 const X509_VERIFY_PARAM
* const *b
)
373 return strcmp((*a
)->name
, (*b
)->name
);
376 int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM
*param
)
379 X509_VERIFY_PARAM
*ptmp
;
382 param_table
= sk_X509_VERIFY_PARAM_new(param_cmp
);
388 idx
= sk_X509_VERIFY_PARAM_find(param_table
, param
);
391 ptmp
= sk_X509_VERIFY_PARAM_value(param_table
, idx
);
392 X509_VERIFY_PARAM_free(ptmp
);
393 (void)sk_X509_VERIFY_PARAM_delete(param_table
, idx
);
396 if (!sk_X509_VERIFY_PARAM_push(param_table
, param
))
401 const X509_VERIFY_PARAM
*X509_VERIFY_PARAM_lookup(const char *name
)
404 X509_VERIFY_PARAM pm
;
406 pm
.name
= (char *)name
;
409 idx
= sk_X509_VERIFY_PARAM_find(param_table
, &pm
);
411 return sk_X509_VERIFY_PARAM_value(param_table
, idx
);
413 return OBJ_bsearch_table(&pm
, default_table
,
414 sizeof(default_table
)/sizeof(X509_VERIFY_PARAM
));
417 void X509_VERIFY_PARAM_table_cleanup(void)
420 sk_X509_VERIFY_PARAM_pop_free(param_table
,
421 X509_VERIFY_PARAM_free
);