3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 2004 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
63 #include <openssl/crypto.h>
64 #include <openssl/lhash.h>
65 #include <openssl/buffer.h>
66 #include <openssl/x509.h>
67 #include <openssl/x509v3.h>
71 /* X509_VERIFY_PARAM functions */
76 static char *str_copy(const char *s)
78 return OPENSSL_strdup(s);
81 static void str_free(char *s)
86 #define string_stack_free(sk) sk_OPENSSL_STRING_pop_free(sk, str_free)
88 static int int_x509_param_set_hosts(X509_VERIFY_PARAM_ID *id, int mode,
89 const char *name, size_t namelen)
94 * Refuse names with embedded NUL bytes, except perhaps as final byte.
95 * XXX: Do we need to push an error onto the error stack?
97 if (namelen == 0 || name == NULL)
98 namelen = name ? strlen(name) : 0;
99 else if (name && memchr(name, '\0', namelen > 1 ? namelen - 1 : namelen))
101 if (namelen > 0 && name[namelen - 1] == '\0')
104 if (mode == SET_HOST && id->hosts) {
105 string_stack_free(id->hosts);
108 if (name == NULL || namelen == 0)
111 copy = BUF_strndup(name, namelen);
115 if (id->hosts == NULL &&
116 (id->hosts = sk_OPENSSL_STRING_new_null()) == NULL) {
121 if (!sk_OPENSSL_STRING_push(id->hosts, copy)) {
123 if (sk_OPENSSL_STRING_num(id->hosts) == 0) {
124 sk_OPENSSL_STRING_free(id->hosts);
133 static void x509_verify_param_zero(X509_VERIFY_PARAM *param)
135 X509_VERIFY_PARAM_ID *paramid;
142 * param->inh_flags = X509_VP_FLAG_DEFAULT;
144 param->inh_flags = 0;
147 if (param->policies) {
148 sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
149 param->policies = NULL;
152 if (paramid->hosts) {
153 string_stack_free(paramid->hosts);
154 paramid->hosts = NULL;
156 if (paramid->peername)
157 OPENSSL_free(paramid->peername);
158 paramid->peername = NULL;
159 if (paramid->email) {
160 OPENSSL_free(paramid->email);
161 paramid->email = NULL;
162 paramid->emaillen = 0;
165 OPENSSL_free(paramid->ip);
171 X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)
173 X509_VERIFY_PARAM *param;
174 X509_VERIFY_PARAM_ID *paramid;
176 param = OPENSSL_malloc(sizeof(*param));
179 memset(param, 0, sizeof(*param));
181 paramid = OPENSSL_malloc(sizeof(*paramid));
186 memset(paramid, 0, sizeof(*paramid));
187 /* Exotic platforms may have non-zero bit representation of NULL */
188 paramid->hosts = NULL;
189 paramid->peername = NULL;
190 paramid->email = NULL;
194 x509_verify_param_zero(param);
198 void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
202 x509_verify_param_zero(param);
203 OPENSSL_free(param->id);
208 * This function determines how parameters are "inherited" from one structure
209 * to another. There are several different ways this can happen.
211 * 1. If a child structure needs to have its values initialized from a parent
212 * they are simply copied across. For example SSL_CTX copied to SSL.
213 * 2. If the structure should take on values only if they are currently unset.
214 * For example the values in an SSL structure will take appropriate value
215 * for SSL servers or clients but only if the application has not set new
218 * The "inh_flags" field determines how this function behaves.
220 * Normally any values which are set in the default are not copied from the
221 * destination and verify flags are ORed together.
223 * If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied
224 * to the destination. Effectively the values in "to" become default values
225 * which will be used only if nothing new is set in "from".
227 * If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether
228 * they are set or not. Flags is still Ored though.
230 * If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead
233 * If X509_VP_FLAG_LOCKED is set then no values are copied.
235 * If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed
236 * after the next call.
239 /* Macro to test if a field should be copied from src to dest */
241 #define test_x509_verify_param_copy(field, def) \
243 ((src->field != def) && (to_default || (dest->field == def))))
245 /* As above but for ID fields */
247 #define test_x509_verify_param_copy_id(idf, def) \
248 test_x509_verify_param_copy(id->idf, def)
250 /* Macro to test and copy a field if necessary */
252 #define x509_verify_param_copy(field, def) \
253 if (test_x509_verify_param_copy(field, def)) \
254 dest->field = src->field
256 int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest,
257 const X509_VERIFY_PARAM *src)
259 unsigned long inh_flags;
260 int to_default, to_overwrite;
261 X509_VERIFY_PARAM_ID *id;
265 inh_flags = dest->inh_flags | src->inh_flags;
267 if (inh_flags & X509_VP_FLAG_ONCE)
270 if (inh_flags & X509_VP_FLAG_LOCKED)
273 if (inh_flags & X509_VP_FLAG_DEFAULT)
278 if (inh_flags & X509_VP_FLAG_OVERWRITE)
283 x509_verify_param_copy(purpose, 0);
284 x509_verify_param_copy(trust, 0);
285 x509_verify_param_copy(depth, -1);
287 /* If overwrite or check time not set, copy across */
289 if (to_overwrite || !(dest->flags & X509_V_FLAG_USE_CHECK_TIME)) {
290 dest->check_time = src->check_time;
291 dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME;
292 /* Don't need to copy flag: that is done below */
295 if (inh_flags & X509_VP_FLAG_RESET_FLAGS)
298 dest->flags |= src->flags;
300 if (test_x509_verify_param_copy(policies, NULL)) {
301 if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies))
305 /* Copy the host flags if and only if we're copying the host list */
306 if (test_x509_verify_param_copy_id(hosts, NULL)) {
307 if (dest->id->hosts) {
308 string_stack_free(dest->id->hosts);
309 dest->id->hosts = NULL;
313 sk_OPENSSL_STRING_deep_copy(id->hosts, str_copy, str_free);
314 if (dest->id->hosts == NULL)
316 dest->id->hostflags = id->hostflags;
320 if (test_x509_verify_param_copy_id(email, NULL)) {
321 if (!X509_VERIFY_PARAM_set1_email(dest, id->email, id->emaillen))
325 if (test_x509_verify_param_copy_id(ip, NULL)) {
326 if (!X509_VERIFY_PARAM_set1_ip(dest, id->ip, id->iplen))
333 int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
334 const X509_VERIFY_PARAM *from)
336 unsigned long save_flags = to->inh_flags;
338 to->inh_flags |= X509_VP_FLAG_DEFAULT;
339 ret = X509_VERIFY_PARAM_inherit(to, from);
340 to->inh_flags = save_flags;
344 static int int_x509_param_set1(char **pdest, size_t *pdestlen,
345 const char *src, size_t srclen)
350 tmp = BUF_strdup(src);
351 srclen = strlen(src);
353 tmp = BUF_memdup(src, srclen);
361 OPENSSL_free(*pdest);
368 int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name)
371 OPENSSL_free(param->name);
372 param->name = BUF_strdup(name);
378 int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags)
380 param->flags |= flags;
381 if (flags & X509_V_FLAG_POLICY_MASK)
382 param->flags |= X509_V_FLAG_POLICY_CHECK;
386 int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
389 param->flags &= ~flags;
393 unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param)
398 int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)
400 return X509_PURPOSE_set(¶m->purpose, purpose);
403 int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)
405 return X509_TRUST_set(¶m->trust, trust);
408 void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)
410 param->depth = depth;
413 void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t)
415 param->check_time = t;
416 param->flags |= X509_V_FLAG_USE_CHECK_TIME;
419 int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
422 if (!param->policies) {
423 param->policies = sk_ASN1_OBJECT_new_null();
424 if (!param->policies)
427 if (!sk_ASN1_OBJECT_push(param->policies, policy))
432 int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
433 STACK_OF(ASN1_OBJECT) *policies)
436 ASN1_OBJECT *oid, *doid;
440 sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
443 param->policies = NULL;
447 param->policies = sk_ASN1_OBJECT_new_null();
448 if (!param->policies)
451 for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++) {
452 oid = sk_ASN1_OBJECT_value(policies, i);
456 if (!sk_ASN1_OBJECT_push(param->policies, doid)) {
457 ASN1_OBJECT_free(doid);
461 param->flags |= X509_V_FLAG_POLICY_CHECK;
465 int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
466 const char *name, size_t namelen)
468 return int_x509_param_set_hosts(param->id, SET_HOST, name, namelen);
471 int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
472 const char *name, size_t namelen)
474 return int_x509_param_set_hosts(param->id, ADD_HOST, name, namelen);
477 void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
480 param->id->hostflags = flags;
483 char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *param)
485 return param->id->peername;
488 int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
489 const char *email, size_t emaillen)
491 return int_x509_param_set1(¶m->id->email, ¶m->id->emaillen,
495 int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
496 const unsigned char *ip, size_t iplen)
498 if (iplen != 0 && iplen != 4 && iplen != 16)
500 return int_x509_param_set1((char **)¶m->id->ip, ¶m->id->iplen,
504 int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param, const char *ipasc)
506 unsigned char ipout[16];
509 iplen = (size_t)a2i_ipadd(ipout, ipasc);
512 return X509_VERIFY_PARAM_set1_ip(param, ipout, iplen);
515 int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param)
520 const char *X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM *param)
525 static X509_VERIFY_PARAM_ID _empty_id = { NULL, 0U, NULL, NULL, 0, NULL, 0 };
527 #define vpm_empty_id (X509_VERIFY_PARAM_ID *)&_empty_id
530 * Default verify parameters: these are used for various applications and can
531 * be overridden by the user specified table. NB: the 'name' field *must* be
532 * in alphabetical order because it will be searched using OBJ_search.
535 static const X509_VERIFY_PARAM default_table[] = {
537 "default", /* X509 default parameters */
539 0, /* internal flags */
547 "pkcs7", /* S/MIME sign parameters */
549 0, /* internal flags */
551 X509_PURPOSE_SMIME_SIGN, /* purpose */
552 X509_TRUST_EMAIL, /* trust */
557 "smime_sign", /* S/MIME sign parameters */
559 0, /* internal flags */
561 X509_PURPOSE_SMIME_SIGN, /* purpose */
562 X509_TRUST_EMAIL, /* trust */
567 "ssl_client", /* SSL/TLS client parameters */
569 0, /* internal flags */
571 X509_PURPOSE_SSL_CLIENT, /* purpose */
572 X509_TRUST_SSL_CLIENT, /* trust */
577 "ssl_server", /* SSL/TLS server parameters */
579 0, /* internal flags */
581 X509_PURPOSE_SSL_SERVER, /* purpose */
582 X509_TRUST_SSL_SERVER, /* trust */
588 static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;
590 static int table_cmp(const X509_VERIFY_PARAM *a, const X509_VERIFY_PARAM *b)
592 return strcmp(a->name, b->name);
595 DECLARE_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table);
596 IMPLEMENT_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table);
598 static int param_cmp(const X509_VERIFY_PARAM *const *a,
599 const X509_VERIFY_PARAM *const *b)
601 return strcmp((*a)->name, (*b)->name);
604 int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)
607 X509_VERIFY_PARAM *ptmp;
609 param_table = sk_X509_VERIFY_PARAM_new(param_cmp);
613 idx = sk_X509_VERIFY_PARAM_find(param_table, param);
615 ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx);
616 X509_VERIFY_PARAM_free(ptmp);
617 (void)sk_X509_VERIFY_PARAM_delete(param_table, idx);
620 if (!sk_X509_VERIFY_PARAM_push(param_table, param))
625 int X509_VERIFY_PARAM_get_count(void)
627 int num = sizeof(default_table) / sizeof(X509_VERIFY_PARAM);
629 num += sk_X509_VERIFY_PARAM_num(param_table);
633 const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id)
635 int num = sizeof(default_table) / sizeof(X509_VERIFY_PARAM);
637 return default_table + id;
638 return sk_X509_VERIFY_PARAM_value(param_table, id - num);
641 const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name)
644 X509_VERIFY_PARAM pm;
646 pm.name = (char *)name;
648 idx = sk_X509_VERIFY_PARAM_find(param_table, &pm);
650 return sk_X509_VERIFY_PARAM_value(param_table, idx);
652 return OBJ_bsearch_table(&pm, default_table,
653 sizeof(default_table) /
654 sizeof(X509_VERIFY_PARAM));
657 void X509_VERIFY_PARAM_table_cleanup(void)
660 sk_X509_VERIFY_PARAM_pop_free(param_table, X509_VERIFY_PARAM_free);