2 * Copyright 2004-2017 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
12 #include "internal/cryptlib.h"
13 #include <openssl/crypto.h>
14 #include <openssl/buffer.h>
15 #include <openssl/x509.h>
16 #include <openssl/x509v3.h>
17 #include "internal/x509_int.h"
21 /* X509_VERIFY_PARAM functions */
26 static char *str_copy(const char *s)
28 return OPENSSL_strdup(s);
31 static void str_free(char *s)
36 static int int_x509_param_set_hosts(X509_VERIFY_PARAM *vpm, int mode,
37 const char *name, size_t namelen)
42 * Refuse names with embedded NUL bytes, except perhaps as final byte.
43 * XXX: Do we need to push an error onto the error stack?
45 if (namelen == 0 || name == NULL)
46 namelen = name ? strlen(name) : 0;
47 else if (name && memchr(name, '\0', namelen > 1 ? namelen - 1 : namelen))
49 if (namelen > 0 && name[namelen - 1] == '\0')
52 if (mode == SET_HOST) {
53 sk_OPENSSL_STRING_pop_free(vpm->hosts, str_free);
56 if (name == NULL || namelen == 0)
59 copy = OPENSSL_strndup(name, namelen);
63 if (vpm->hosts == NULL &&
64 (vpm->hosts = sk_OPENSSL_STRING_new_null()) == NULL) {
69 if (!sk_OPENSSL_STRING_push(vpm->hosts, copy)) {
71 if (sk_OPENSSL_STRING_num(vpm->hosts) == 0) {
72 sk_OPENSSL_STRING_free(vpm->hosts);
82 X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)
84 X509_VERIFY_PARAM *param;
86 param = OPENSSL_zalloc(sizeof(*param));
89 param->trust = X509_TRUST_DEFAULT;
91 * param->inh_flags = X509_VP_FLAG_DEFAULT;
95 param->auth_level = -1; /* -1 means unset, 0 is explicit */
99 void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
103 sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
104 sk_OPENSSL_STRING_pop_free(param->hosts, str_free);
105 OPENSSL_free(param->peername);
106 OPENSSL_free(param->email);
107 OPENSSL_free(param->ip);
112 * This function determines how parameters are "inherited" from one structure
113 * to another. There are several different ways this can happen.
115 * 1. If a child structure needs to have its values initialized from a parent
116 * they are simply copied across. For example SSL_CTX copied to SSL.
117 * 2. If the structure should take on values only if they are currently unset.
118 * For example the values in an SSL structure will take appropriate value
119 * for SSL servers or clients but only if the application has not set new
122 * The "inh_flags" field determines how this function behaves.
124 * Normally any values which are set in the default are not copied from the
125 * destination and verify flags are ORed together.
127 * If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied
128 * to the destination. Effectively the values in "to" become default values
129 * which will be used only if nothing new is set in "from".
131 * If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether
132 * they are set or not. Flags is still Ored though.
134 * If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead
137 * If X509_VP_FLAG_LOCKED is set then no values are copied.
139 * If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed
140 * after the next call.
143 /* Macro to test if a field should be copied from src to dest */
145 #define test_x509_verify_param_copy(field, def) \
147 ((src->field != def) && (to_default || (dest->field == def))))
149 /* Macro to test and copy a field if necessary */
151 #define x509_verify_param_copy(field, def) \
152 if (test_x509_verify_param_copy(field, def)) \
153 dest->field = src->field
155 int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest,
156 const X509_VERIFY_PARAM *src)
158 unsigned long inh_flags;
159 int to_default, to_overwrite;
162 inh_flags = dest->inh_flags | src->inh_flags;
164 if (inh_flags & X509_VP_FLAG_ONCE)
167 if (inh_flags & X509_VP_FLAG_LOCKED)
170 if (inh_flags & X509_VP_FLAG_DEFAULT)
175 if (inh_flags & X509_VP_FLAG_OVERWRITE)
180 x509_verify_param_copy(purpose, 0);
181 x509_verify_param_copy(trust, X509_TRUST_DEFAULT);
182 x509_verify_param_copy(depth, -1);
183 x509_verify_param_copy(auth_level, -1);
185 /* If overwrite or check time not set, copy across */
187 if (to_overwrite || !(dest->flags & X509_V_FLAG_USE_CHECK_TIME)) {
188 dest->check_time = src->check_time;
189 dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME;
190 /* Don't need to copy flag: that is done below */
193 if (inh_flags & X509_VP_FLAG_RESET_FLAGS)
196 dest->flags |= src->flags;
198 if (test_x509_verify_param_copy(policies, NULL)) {
199 if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies))
203 /* Copy the host flags if and only if we're copying the host list */
204 if (test_x509_verify_param_copy(hosts, NULL)) {
205 sk_OPENSSL_STRING_pop_free(dest->hosts, str_free);
209 sk_OPENSSL_STRING_deep_copy(src->hosts, str_copy, str_free);
210 if (dest->hosts == NULL)
212 dest->hostflags = src->hostflags;
216 if (test_x509_verify_param_copy(email, NULL)) {
217 if (!X509_VERIFY_PARAM_set1_email(dest, src->email, src->emaillen))
221 if (test_x509_verify_param_copy(ip, NULL)) {
222 if (!X509_VERIFY_PARAM_set1_ip(dest, src->ip, src->iplen))
229 int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
230 const X509_VERIFY_PARAM *from)
232 unsigned long save_flags = to->inh_flags;
234 to->inh_flags |= X509_VP_FLAG_DEFAULT;
235 ret = X509_VERIFY_PARAM_inherit(to, from);
236 to->inh_flags = save_flags;
240 static int int_x509_param_set1(char **pdest, size_t *pdestlen,
241 const char *src, size_t srclen)
246 srclen = strlen(src);
248 tmp = OPENSSL_memdup(src, srclen);
255 OPENSSL_free(*pdest);
257 if (pdestlen != NULL)
262 int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name)
264 OPENSSL_free(param->name);
265 param->name = OPENSSL_strdup(name);
271 int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags)
273 param->flags |= flags;
274 if (flags & X509_V_FLAG_POLICY_MASK)
275 param->flags |= X509_V_FLAG_POLICY_CHECK;
279 int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
282 param->flags &= ~flags;
286 unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param)
291 uint32_t X509_VERIFY_PARAM_get_inh_flags(const X509_VERIFY_PARAM *param)
293 return param->inh_flags;
296 int X509_VERIFY_PARAM_set_inh_flags(X509_VERIFY_PARAM *param, uint32_t flags)
298 param->inh_flags = flags;
302 int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)
304 return X509_PURPOSE_set(¶m->purpose, purpose);
307 int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)
309 return X509_TRUST_set(¶m->trust, trust);
312 void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)
314 param->depth = depth;
317 void X509_VERIFY_PARAM_set_auth_level(X509_VERIFY_PARAM *param, int auth_level)
319 param->auth_level = auth_level;
322 time_t X509_VERIFY_PARAM_get_time(const X509_VERIFY_PARAM *param)
324 return param->check_time;
327 void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t)
329 param->check_time = t;
330 param->flags |= X509_V_FLAG_USE_CHECK_TIME;
333 int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
336 if (!param->policies) {
337 param->policies = sk_ASN1_OBJECT_new_null();
338 if (!param->policies)
341 if (!sk_ASN1_OBJECT_push(param->policies, policy))
346 int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
347 STACK_OF(ASN1_OBJECT) *policies)
350 ASN1_OBJECT *oid, *doid;
354 sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
357 param->policies = NULL;
361 param->policies = sk_ASN1_OBJECT_new_null();
362 if (!param->policies)
365 for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++) {
366 oid = sk_ASN1_OBJECT_value(policies, i);
370 if (!sk_ASN1_OBJECT_push(param->policies, doid)) {
371 ASN1_OBJECT_free(doid);
375 param->flags |= X509_V_FLAG_POLICY_CHECK;
379 int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
380 const char *name, size_t namelen)
382 return int_x509_param_set_hosts(param, SET_HOST, name, namelen);
385 int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
386 const char *name, size_t namelen)
388 return int_x509_param_set_hosts(param, ADD_HOST, name, namelen);
391 void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
394 param->hostflags = flags;
397 char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *param)
399 return param->peername;
403 * Move peername from one param structure to another, freeing any name present
404 * at the target. If the source is a NULL parameter structure, free and zero
405 * the target peername.
407 void X509_VERIFY_PARAM_move_peername(X509_VERIFY_PARAM *to,
408 X509_VERIFY_PARAM *from)
410 char *peername = (from != NULL) ? from->peername : NULL;
412 if (to->peername != peername) {
413 OPENSSL_free(to->peername);
414 to->peername = peername;
417 from->peername = NULL;
420 int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
421 const char *email, size_t emaillen)
423 return int_x509_param_set1(¶m->email, ¶m->emaillen,
427 int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
428 const unsigned char *ip, size_t iplen)
430 if (iplen != 0 && iplen != 4 && iplen != 16)
432 return int_x509_param_set1((char **)¶m->ip, ¶m->iplen,
436 int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param, const char *ipasc)
438 unsigned char ipout[16];
441 iplen = (size_t)a2i_ipadd(ipout, ipasc);
444 return X509_VERIFY_PARAM_set1_ip(param, ipout, iplen);
447 int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param)
452 int X509_VERIFY_PARAM_get_auth_level(const X509_VERIFY_PARAM *param)
454 return param->auth_level;
457 const char *X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM *param)
462 #define vpm_empty_id NULL, 0U, NULL, NULL, 0, NULL, 0
465 * Default verify parameters: these are used for various applications and can
466 * be overridden by the user specified table. NB: the 'name' field *must* be
467 * in alphabetical order because it will be searched using OBJ_search.
470 static const X509_VERIFY_PARAM default_table[] = {
472 "default", /* X509 default parameters */
474 0, /* internal flags */
475 X509_V_FLAG_TRUSTED_FIRST, /* flags */
483 "pkcs7", /* S/MIME sign parameters */
485 0, /* internal flags */
487 X509_PURPOSE_SMIME_SIGN, /* purpose */
488 X509_TRUST_EMAIL, /* trust */
494 "smime_sign", /* S/MIME sign parameters */
496 0, /* internal flags */
498 X509_PURPOSE_SMIME_SIGN, /* purpose */
499 X509_TRUST_EMAIL, /* trust */
505 "ssl_client", /* SSL/TLS client parameters */
507 0, /* internal flags */
509 X509_PURPOSE_SSL_CLIENT, /* purpose */
510 X509_TRUST_SSL_CLIENT, /* trust */
516 "ssl_server", /* SSL/TLS server parameters */
518 0, /* internal flags */
520 X509_PURPOSE_SSL_SERVER, /* purpose */
521 X509_TRUST_SSL_SERVER, /* trust */
528 static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;
530 static int table_cmp(const X509_VERIFY_PARAM *a, const X509_VERIFY_PARAM *b)
532 return strcmp(a->name, b->name);
535 DECLARE_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table);
536 IMPLEMENT_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table);
538 static int param_cmp(const X509_VERIFY_PARAM *const *a,
539 const X509_VERIFY_PARAM *const *b)
541 return strcmp((*a)->name, (*b)->name);
544 int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)
547 X509_VERIFY_PARAM *ptmp;
548 if (param_table == NULL) {
549 param_table = sk_X509_VERIFY_PARAM_new(param_cmp);
550 if (param_table == NULL)
553 idx = sk_X509_VERIFY_PARAM_find(param_table, param);
555 ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx);
556 X509_VERIFY_PARAM_free(ptmp);
557 (void)sk_X509_VERIFY_PARAM_delete(param_table, idx);
560 if (!sk_X509_VERIFY_PARAM_push(param_table, param))
565 int X509_VERIFY_PARAM_get_count(void)
567 int num = OSSL_NELEM(default_table);
569 num += sk_X509_VERIFY_PARAM_num(param_table);
573 const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id)
575 int num = OSSL_NELEM(default_table);
577 return default_table + id;
578 return sk_X509_VERIFY_PARAM_value(param_table, id - num);
581 const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name)
584 X509_VERIFY_PARAM pm;
586 pm.name = (char *)name;
588 idx = sk_X509_VERIFY_PARAM_find(param_table, &pm);
590 return sk_X509_VERIFY_PARAM_value(param_table, idx);
592 return OBJ_bsearch_table(&pm, default_table, OSSL_NELEM(default_table));
595 void X509_VERIFY_PARAM_table_cleanup(void)
597 sk_X509_VERIFY_PARAM_pop_free(param_table, X509_VERIFY_PARAM_free);