1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
57 /* ====================================================================
58 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * openssl-core@openssl.org.
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com).
110 /* ====================================================================
111 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
112 * ECC cipher suite support in OpenSSL originally developed by
113 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
119 #ifndef NO_SYS_TYPES_H
120 # include <sys/types.h>
123 #include "internal/o_dir.h"
124 #include <openssl/lhash.h>
125 #include <openssl/bio.h>
126 #include <openssl/pem.h>
127 #include <openssl/x509v3.h>
128 #include <openssl/dh.h>
129 #include <openssl/bn.h>
130 #include "internal/threads.h"
131 #include "ssl_locl.h"
133 static int ssl_security_default_callback(const SSL
*s
, const SSL_CTX
*ctx
, int op
,
134 int bits
, int nid
, void *other
,
137 static CRYPTO_ONCE ssl_x509_store_ctx_once
= CRYPTO_ONCE_STATIC_INIT
;
138 static volatile int ssl_x509_store_ctx_idx
= -1;
140 static void ssl_x509_store_ctx_init(void)
142 ssl_x509_store_ctx_idx
= X509_STORE_CTX_get_ex_new_index(0,
143 "SSL for verify callback",
147 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
150 CRYPTO_THREAD_run_once(&ssl_x509_store_ctx_once
, ssl_x509_store_ctx_init
);
151 return ssl_x509_store_ctx_idx
;
154 CERT
*ssl_cert_new(void)
156 CERT
*ret
= OPENSSL_zalloc(sizeof(*ret
));
159 SSLerr(SSL_F_SSL_CERT_NEW
, ERR_R_MALLOC_FAILURE
);
163 ret
->key
= &(ret
->pkeys
[SSL_PKEY_RSA_ENC
]);
165 ret
->sec_cb
= ssl_security_default_callback
;
166 ret
->sec_level
= OPENSSL_TLS_SECURITY_LEVEL
;
168 ret
->lock
= CRYPTO_THREAD_lock_new();
169 if (ret
->lock
== NULL
) {
170 SSLerr(SSL_F_SSL_CERT_NEW
, ERR_R_MALLOC_FAILURE
);
178 CERT
*ssl_cert_dup(CERT
*cert
)
180 CERT
*ret
= OPENSSL_zalloc(sizeof(*ret
));
184 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
189 ret
->key
= &ret
->pkeys
[cert
->key
- cert
->pkeys
];
190 ret
->lock
= CRYPTO_THREAD_lock_new();
191 if (ret
->lock
== NULL
) {
192 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
197 #ifndef OPENSSL_NO_DH
198 if (cert
->dh_tmp
!= NULL
) {
199 ret
->dh_tmp
= cert
->dh_tmp
;
200 EVP_PKEY_up_ref(ret
->dh_tmp
);
202 ret
->dh_tmp_cb
= cert
->dh_tmp_cb
;
203 ret
->dh_tmp_auto
= cert
->dh_tmp_auto
;
206 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
207 CERT_PKEY
*cpk
= cert
->pkeys
+ i
;
208 CERT_PKEY
*rpk
= ret
->pkeys
+ i
;
209 if (cpk
->x509
!= NULL
) {
210 rpk
->x509
= cpk
->x509
;
211 X509_up_ref(rpk
->x509
);
214 if (cpk
->privatekey
!= NULL
) {
215 rpk
->privatekey
= cpk
->privatekey
;
216 EVP_PKEY_up_ref(cpk
->privatekey
);
220 rpk
->chain
= X509_chain_up_ref(cpk
->chain
);
222 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
226 if (cert
->pkeys
[i
].serverinfo
!= NULL
) {
227 /* Just copy everything. */
228 ret
->pkeys
[i
].serverinfo
=
229 OPENSSL_malloc(cert
->pkeys
[i
].serverinfo_length
);
230 if (ret
->pkeys
[i
].serverinfo
== NULL
) {
231 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
234 ret
->pkeys
[i
].serverinfo_length
=
235 cert
->pkeys
[i
].serverinfo_length
;
236 memcpy(ret
->pkeys
[i
].serverinfo
,
237 cert
->pkeys
[i
].serverinfo
,
238 cert
->pkeys
[i
].serverinfo_length
);
242 /* Configured sigalgs copied across */
243 if (cert
->conf_sigalgs
) {
244 ret
->conf_sigalgs
= OPENSSL_malloc(cert
->conf_sigalgslen
);
245 if (ret
->conf_sigalgs
== NULL
)
247 memcpy(ret
->conf_sigalgs
, cert
->conf_sigalgs
, cert
->conf_sigalgslen
);
248 ret
->conf_sigalgslen
= cert
->conf_sigalgslen
;
250 ret
->conf_sigalgs
= NULL
;
252 if (cert
->client_sigalgs
) {
253 ret
->client_sigalgs
= OPENSSL_malloc(cert
->client_sigalgslen
);
254 if (ret
->client_sigalgs
== NULL
)
256 memcpy(ret
->client_sigalgs
, cert
->client_sigalgs
,
257 cert
->client_sigalgslen
);
258 ret
->client_sigalgslen
= cert
->client_sigalgslen
;
260 ret
->client_sigalgs
= NULL
;
261 /* Shared sigalgs also NULL */
262 ret
->shared_sigalgs
= NULL
;
263 /* Copy any custom client certificate types */
265 ret
->ctypes
= OPENSSL_malloc(cert
->ctype_num
);
266 if (ret
->ctypes
== NULL
)
268 memcpy(ret
->ctypes
, cert
->ctypes
, cert
->ctype_num
);
269 ret
->ctype_num
= cert
->ctype_num
;
272 ret
->cert_flags
= cert
->cert_flags
;
274 ret
->cert_cb
= cert
->cert_cb
;
275 ret
->cert_cb_arg
= cert
->cert_cb_arg
;
277 if (cert
->verify_store
) {
278 X509_STORE_up_ref(cert
->verify_store
);
279 ret
->verify_store
= cert
->verify_store
;
282 if (cert
->chain_store
) {
283 X509_STORE_up_ref(cert
->chain_store
);
284 ret
->chain_store
= cert
->chain_store
;
287 ret
->sec_cb
= cert
->sec_cb
;
288 ret
->sec_level
= cert
->sec_level
;
289 ret
->sec_ex
= cert
->sec_ex
;
291 if (!custom_exts_copy(&ret
->cli_ext
, &cert
->cli_ext
))
293 if (!custom_exts_copy(&ret
->srv_ext
, &cert
->srv_ext
))
295 #ifndef OPENSSL_NO_PSK
296 if (cert
->psk_identity_hint
) {
297 ret
->psk_identity_hint
= OPENSSL_strdup(cert
->psk_identity_hint
);
298 if (ret
->psk_identity_hint
== NULL
)
310 /* Free up and clear all certificates and chains */
312 void ssl_cert_clear_certs(CERT
*c
)
317 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
318 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
319 X509_free(cpk
->x509
);
321 EVP_PKEY_free(cpk
->privatekey
);
322 cpk
->privatekey
= NULL
;
323 sk_X509_pop_free(cpk
->chain
, X509_free
);
325 OPENSSL_free(cpk
->serverinfo
);
326 cpk
->serverinfo
= NULL
;
327 cpk
->serverinfo_length
= 0;
331 void ssl_cert_free(CERT
*c
)
338 CRYPTO_atomic_add(&c
->references
, -1, &i
, c
->lock
);
339 REF_PRINT_COUNT("CERT", c
);
342 REF_ASSERT_ISNT(i
< 0);
344 #ifndef OPENSSL_NO_DH
345 EVP_PKEY_free(c
->dh_tmp
);
348 ssl_cert_clear_certs(c
);
349 OPENSSL_free(c
->conf_sigalgs
);
350 OPENSSL_free(c
->client_sigalgs
);
351 OPENSSL_free(c
->shared_sigalgs
);
352 OPENSSL_free(c
->ctypes
);
353 X509_STORE_free(c
->verify_store
);
354 X509_STORE_free(c
->chain_store
);
355 custom_exts_free(&c
->cli_ext
);
356 custom_exts_free(&c
->srv_ext
);
357 #ifndef OPENSSL_NO_PSK
358 OPENSSL_free(c
->psk_identity_hint
);
360 CRYPTO_THREAD_lock_free(c
->lock
);
364 int ssl_cert_set0_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
367 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
370 sk_X509_pop_free(cpk
->chain
, X509_free
);
371 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
372 r
= ssl_security_cert(s
, ctx
, sk_X509_value(chain
, i
), 0, 0);
374 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN
, r
);
382 int ssl_cert_set1_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
384 STACK_OF(X509
) *dchain
;
386 return ssl_cert_set0_chain(s
, ctx
, NULL
);
387 dchain
= X509_chain_up_ref(chain
);
390 if (!ssl_cert_set0_chain(s
, ctx
, dchain
)) {
391 sk_X509_pop_free(dchain
, X509_free
);
397 int ssl_cert_add0_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
400 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
403 r
= ssl_security_cert(s
, ctx
, x
, 0, 0);
405 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT
, r
);
409 cpk
->chain
= sk_X509_new_null();
410 if (!cpk
->chain
|| !sk_X509_push(cpk
->chain
, x
))
415 int ssl_cert_add1_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
417 if (!ssl_cert_add0_chain_cert(s
, ctx
, x
))
423 int ssl_cert_select_current(CERT
*c
, X509
*x
)
428 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
429 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
430 if (cpk
->x509
== x
&& cpk
->privatekey
) {
436 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
437 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
438 if (cpk
->privatekey
&& cpk
->x509
&& !X509_cmp(cpk
->x509
, x
)) {
446 int ssl_cert_set_current(CERT
*c
, long op
)
451 if (op
== SSL_CERT_SET_FIRST
)
453 else if (op
== SSL_CERT_SET_NEXT
) {
454 idx
= (int)(c
->key
- c
->pkeys
+ 1);
455 if (idx
>= SSL_PKEY_NUM
)
459 for (i
= idx
; i
< SSL_PKEY_NUM
; i
++) {
460 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
461 if (cpk
->x509
&& cpk
->privatekey
) {
469 void ssl_cert_set_cert_cb(CERT
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
472 c
->cert_cb_arg
= arg
;
475 int ssl_verify_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
)
479 X509_STORE
*verify_store
;
481 X509_VERIFY_PARAM
*param
;
483 if (s
->cert
->verify_store
)
484 verify_store
= s
->cert
->verify_store
;
486 verify_store
= s
->ctx
->cert_store
;
488 if ((sk
== NULL
) || (sk_X509_num(sk
) == 0))
491 x
= sk_X509_value(sk
, 0);
492 if (!X509_STORE_CTX_init(&ctx
, verify_store
, x
, sk
)) {
493 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_X509_LIB
);
496 param
= X509_STORE_CTX_get0_param(&ctx
);
498 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
499 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
500 * and PKI authentication.
502 X509_VERIFY_PARAM_set_auth_level(param
, SSL_get_security_level(s
));
504 /* Set suite B flags if needed */
505 X509_STORE_CTX_set_flags(&ctx
, tls1_suiteb(s
));
506 X509_STORE_CTX_set_ex_data(&ctx
, SSL_get_ex_data_X509_STORE_CTX_idx(), s
);
508 /* Verify via DANE if enabled */
509 if (DANETLS_ENABLED(&s
->dane
))
510 X509_STORE_CTX_set0_dane(&ctx
, &s
->dane
);
513 * We need to inherit the verify parameters. These can be determined by
514 * the context: if its a server it will verify SSL client certificates or
518 X509_STORE_CTX_set_default(&ctx
, s
->server
? "ssl_client" : "ssl_server");
520 * Anything non-default in "s->param" should overwrite anything in the ctx.
522 X509_VERIFY_PARAM_set1(param
, s
->param
);
524 if (s
->verify_callback
)
525 X509_STORE_CTX_set_verify_cb(&ctx
, s
->verify_callback
);
527 if (s
->ctx
->app_verify_callback
!= NULL
)
528 i
= s
->ctx
->app_verify_callback(&ctx
, s
->ctx
->app_verify_arg
);
530 i
= X509_verify_cert(&ctx
);
532 s
->verify_result
= ctx
.error
;
533 sk_X509_pop_free(s
->verified_chain
, X509_free
);
534 s
->verified_chain
= NULL
;
535 if (X509_STORE_CTX_get_chain(&ctx
) != NULL
) {
536 s
->verified_chain
= X509_STORE_CTX_get1_chain(&ctx
);
537 if (s
->verified_chain
== NULL
) {
538 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_MALLOC_FAILURE
);
543 /* Move peername from the store context params to the SSL handle's */
544 X509_VERIFY_PARAM_move_peername(s
->param
, param
);
546 X509_STORE_CTX_cleanup(&ctx
);
551 static void set_client_CA_list(STACK_OF(X509_NAME
) **ca_list
,
552 STACK_OF(X509_NAME
) *name_list
)
554 sk_X509_NAME_pop_free(*ca_list
, X509_NAME_free
);
555 *ca_list
= name_list
;
558 STACK_OF(X509_NAME
) *SSL_dup_CA_list(STACK_OF(X509_NAME
) *sk
)
561 STACK_OF(X509_NAME
) *ret
;
564 ret
= sk_X509_NAME_new_null();
565 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
566 name
= X509_NAME_dup(sk_X509_NAME_value(sk
, i
));
567 if ((name
== NULL
) || !sk_X509_NAME_push(ret
, name
)) {
568 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
575 void SSL_set_client_CA_list(SSL
*s
, STACK_OF(X509_NAME
) *name_list
)
577 set_client_CA_list(&(s
->client_CA
), name_list
);
580 void SSL_CTX_set_client_CA_list(SSL_CTX
*ctx
, STACK_OF(X509_NAME
) *name_list
)
582 set_client_CA_list(&(ctx
->client_CA
), name_list
);
585 STACK_OF(X509_NAME
) *SSL_CTX_get_client_CA_list(const SSL_CTX
*ctx
)
587 return (ctx
->client_CA
);
590 STACK_OF(X509_NAME
) *SSL_get_client_CA_list(const SSL
*s
)
592 if (!s
->server
) { /* we are in the client */
593 if (((s
->version
>> 8) == SSL3_VERSION_MAJOR
) && (s
->s3
!= NULL
))
594 return (s
->s3
->tmp
.ca_names
);
598 if (s
->client_CA
!= NULL
)
599 return (s
->client_CA
);
601 return (s
->ctx
->client_CA
);
605 static int add_client_CA(STACK_OF(X509_NAME
) **sk
, X509
*x
)
611 if ((*sk
== NULL
) && ((*sk
= sk_X509_NAME_new_null()) == NULL
))
614 if ((name
= X509_NAME_dup(X509_get_subject_name(x
))) == NULL
)
617 if (!sk_X509_NAME_push(*sk
, name
)) {
618 X509_NAME_free(name
);
624 int SSL_add_client_CA(SSL
*ssl
, X509
*x
)
626 return (add_client_CA(&(ssl
->client_CA
), x
));
629 int SSL_CTX_add_client_CA(SSL_CTX
*ctx
, X509
*x
)
631 return (add_client_CA(&(ctx
->client_CA
), x
));
634 static int xname_sk_cmp(const X509_NAME
*const *a
, const X509_NAME
*const *b
)
636 return (X509_NAME_cmp(*a
, *b
));
639 static int xname_cmp(const X509_NAME
*a
, const X509_NAME
*b
)
641 return X509_NAME_cmp(a
, b
);
644 static unsigned long xname_hash(const X509_NAME
*a
)
646 return X509_NAME_hash((X509_NAME
*)a
);
650 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
651 * it doesn't really have anything to do with clients (except that a common use
652 * for a stack of CAs is to send it to the client). Actually, it doesn't have
653 * much to do with CAs, either, since it will load any old cert.
654 * \param file the file containing one or more certs.
655 * \return a ::STACK containing the certs.
657 STACK_OF(X509_NAME
) *SSL_load_client_CA_file(const char *file
)
659 BIO
*in
= BIO_new(BIO_s_file());
661 X509_NAME
*xn
= NULL
;
662 STACK_OF(X509_NAME
) *ret
= NULL
;
663 LHASH_OF(X509_NAME
) *name_hash
=
664 lh_X509_NAME_new(xname_hash
, xname_cmp
);
666 if ((name_hash
== NULL
) || (in
== NULL
)) {
667 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
671 if (!BIO_read_filename(in
, file
))
675 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
678 ret
= sk_X509_NAME_new_null();
680 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
684 if ((xn
= X509_get_subject_name(x
)) == NULL
)
686 /* check for duplicates */
687 xn
= X509_NAME_dup(xn
);
690 if (lh_X509_NAME_retrieve(name_hash
, xn
) != NULL
) {
694 lh_X509_NAME_insert(name_hash
, xn
);
695 sk_X509_NAME_push(ret
, xn
);
701 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
706 lh_X509_NAME_free(name_hash
);
713 * Add a file of certs to a stack.
714 * \param stack the stack to add to.
715 * \param file the file to add from. All certs in this file that are not
716 * already in the stack will be added.
717 * \return 1 for success, 0 for failure. Note that in the case of failure some
718 * certs may have been added to \c stack.
721 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
726 X509_NAME
*xn
= NULL
;
728 int (*oldcmp
) (const X509_NAME
*const *a
, const X509_NAME
*const *b
);
730 oldcmp
= sk_X509_NAME_set_cmp_func(stack
, xname_sk_cmp
);
732 in
= BIO_new(BIO_s_file());
735 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK
,
736 ERR_R_MALLOC_FAILURE
);
740 if (!BIO_read_filename(in
, file
))
744 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
746 if ((xn
= X509_get_subject_name(x
)) == NULL
)
748 xn
= X509_NAME_dup(xn
);
751 if (sk_X509_NAME_find(stack
, xn
) >= 0)
754 sk_X509_NAME_push(stack
, xn
);
765 (void)sk_X509_NAME_set_cmp_func(stack
, oldcmp
);
770 * Add a directory of certs to a stack.
771 * \param stack the stack to append to.
772 * \param dir the directory to append from. All files in this directory will be
773 * examined as potential certs. Any that are acceptable to
774 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
776 * \return 1 for success, 0 for failure. Note that in the case of failure some
777 * certs may have been added to \c stack.
780 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
783 OPENSSL_DIR_CTX
*d
= NULL
;
784 const char *filename
;
787 /* Note that a side effect is that the CAs will be sorted by name */
789 while ((filename
= OPENSSL_DIR_read(&d
, dir
))) {
793 if (strlen(dir
) + strlen(filename
) + 2 > sizeof buf
) {
794 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
,
795 SSL_R_PATH_TOO_LONG
);
798 #ifdef OPENSSL_SYS_VMS
799 r
= BIO_snprintf(buf
, sizeof buf
, "%s%s", dir
, filename
);
801 r
= BIO_snprintf(buf
, sizeof buf
, "%s/%s", dir
, filename
);
803 if (r
<= 0 || r
>= (int)sizeof(buf
))
805 if (!SSL_add_file_cert_subjects_to_stack(stack
, buf
))
810 SYSerr(SYS_F_OPENDIR
, get_last_sys_error());
811 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir
, "')");
812 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
, ERR_R_SYS_LIB
);
825 /* Add a certificate to a BUF_MEM structure */
827 static int ssl_add_cert_to_buf(BUF_MEM
*buf
, unsigned long *l
, X509
*x
)
832 n
= i2d_X509(x
, NULL
);
833 if (!BUF_MEM_grow_clean(buf
, (int)(n
+ (*l
) + 3))) {
834 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF
, ERR_R_BUF_LIB
);
837 p
= (unsigned char *)&(buf
->data
[*l
]);
845 /* Add certificate chain to internal SSL BUF_MEM strcuture */
846 int ssl_add_cert_chain(SSL
*s
, CERT_PKEY
*cpk
, unsigned long *l
)
848 BUF_MEM
*buf
= s
->init_buf
;
852 STACK_OF(X509
) *extra_certs
;
853 X509_STORE
*chain_store
;
855 /* TLSv1 sends a chain with nothing in it, instead of an alert */
856 if (!BUF_MEM_grow_clean(buf
, 10)) {
857 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_BUF_LIB
);
861 if (!cpk
|| !cpk
->x509
)
867 * If we have a certificate specific chain use it, else use parent ctx.
870 extra_certs
= cpk
->chain
;
872 extra_certs
= s
->ctx
->extra_certs
;
874 if ((s
->mode
& SSL_MODE_NO_AUTO_CHAIN
) || extra_certs
)
876 else if (s
->cert
->chain_store
)
877 chain_store
= s
->cert
->chain_store
;
879 chain_store
= s
->ctx
->cert_store
;
882 X509_STORE_CTX xs_ctx
;
884 if (!X509_STORE_CTX_init(&xs_ctx
, chain_store
, x
, NULL
)) {
885 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_X509_LIB
);
889 * It is valid for the chain not to be complete (because normally we
890 * don't include the root cert in the chain). Therefore we deliberately
891 * ignore the error return from this call. We're not actually verifying
892 * the cert - we're just building as much of the chain as we can
894 (void) X509_verify_cert(&xs_ctx
);
895 /* Don't leave errors in the queue */
897 i
= ssl_security_cert_chain(s
, xs_ctx
.chain
, NULL
, 0);
899 X509_STORE_CTX_cleanup(&xs_ctx
);
901 /* Dummy error calls so mkerr generates them */
902 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, SSL_R_EE_KEY_TOO_SMALL
);
903 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, SSL_R_CA_KEY_TOO_SMALL
);
904 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, SSL_R_CA_MD_TOO_WEAK
);
906 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
909 for (i
= 0; i
< sk_X509_num(xs_ctx
.chain
); i
++) {
910 x
= sk_X509_value(xs_ctx
.chain
, i
);
912 if (!ssl_add_cert_to_buf(buf
, l
, x
)) {
913 X509_STORE_CTX_cleanup(&xs_ctx
);
917 X509_STORE_CTX_cleanup(&xs_ctx
);
919 i
= ssl_security_cert_chain(s
, extra_certs
, x
, 0);
921 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
924 if (!ssl_add_cert_to_buf(buf
, l
, x
))
926 for (i
= 0; i
< sk_X509_num(extra_certs
); i
++) {
927 x
= sk_X509_value(extra_certs
, i
);
928 if (!ssl_add_cert_to_buf(buf
, l
, x
))
935 /* Build a certificate chain for current certificate */
936 int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
)
938 CERT
*c
= s
? s
->cert
: ctx
->cert
;
939 CERT_PKEY
*cpk
= c
->key
;
940 X509_STORE
*chain_store
= NULL
;
941 X509_STORE_CTX xs_ctx
;
942 STACK_OF(X509
) *chain
= NULL
, *untrusted
= NULL
;
948 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_NO_CERTIFICATE_SET
);
951 /* Rearranging and check the chain: add everything to a store */
952 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
) {
953 chain_store
= X509_STORE_new();
954 if (chain_store
== NULL
)
956 for (i
= 0; i
< sk_X509_num(cpk
->chain
); i
++) {
957 x
= sk_X509_value(cpk
->chain
, i
);
958 if (!X509_STORE_add_cert(chain_store
, x
)) {
959 error
= ERR_peek_last_error();
960 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
961 ERR_GET_REASON(error
) !=
962 X509_R_CERT_ALREADY_IN_HASH_TABLE
)
967 /* Add EE cert too: it might be self signed */
968 if (!X509_STORE_add_cert(chain_store
, cpk
->x509
)) {
969 error
= ERR_peek_last_error();
970 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
971 ERR_GET_REASON(error
) != X509_R_CERT_ALREADY_IN_HASH_TABLE
)
977 chain_store
= c
->chain_store
;
979 chain_store
= s
->ctx
->cert_store
;
981 chain_store
= ctx
->cert_store
;
983 if (flags
& SSL_BUILD_CHAIN_FLAG_UNTRUSTED
)
984 untrusted
= cpk
->chain
;
987 if (!X509_STORE_CTX_init(&xs_ctx
, chain_store
, cpk
->x509
, untrusted
)) {
988 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, ERR_R_X509_LIB
);
991 /* Set suite B flags if needed */
992 X509_STORE_CTX_set_flags(&xs_ctx
,
993 c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
);
995 i
= X509_verify_cert(&xs_ctx
);
996 if (i
<= 0 && flags
& SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR
) {
997 if (flags
& SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR
)
1003 chain
= X509_STORE_CTX_get1_chain(&xs_ctx
);
1005 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_CERTIFICATE_VERIFY_FAILED
);
1006 i
= X509_STORE_CTX_get_error(&xs_ctx
);
1007 ERR_add_error_data(2, "Verify error:",
1008 X509_verify_cert_error_string(i
));
1010 X509_STORE_CTX_cleanup(&xs_ctx
);
1013 X509_STORE_CTX_cleanup(&xs_ctx
);
1014 /* Remove EE certificate from chain */
1015 x
= sk_X509_shift(chain
);
1017 if (flags
& SSL_BUILD_CHAIN_FLAG_NO_ROOT
) {
1018 if (sk_X509_num(chain
) > 0) {
1019 /* See if last cert is self signed */
1020 x
= sk_X509_value(chain
, sk_X509_num(chain
) - 1);
1021 if (X509_get_extension_flags(x
) & EXFLAG_SS
) {
1022 x
= sk_X509_pop(chain
);
1028 * Check security level of all CA certificates: EE will have been checked
1031 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
1032 x
= sk_X509_value(chain
, i
);
1033 rv
= ssl_security_cert(s
, ctx
, x
, 0, 0);
1035 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, rv
);
1036 sk_X509_pop_free(chain
, X509_free
);
1041 sk_X509_pop_free(cpk
->chain
, X509_free
);
1046 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
)
1047 X509_STORE_free(chain_store
);
1052 int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
, int ref
)
1054 X509_STORE
**pstore
;
1056 pstore
= &c
->chain_store
;
1058 pstore
= &c
->verify_store
;
1059 X509_STORE_free(*pstore
);
1062 X509_STORE_up_ref(store
);
1066 static int ssl_security_default_callback(const SSL
*s
, const SSL_CTX
*ctx
, int op
,
1067 int bits
, int nid
, void *other
,
1071 static const int minbits_table
[5] = { 80, 112, 128, 192, 256 };
1073 level
= SSL_CTX_get_security_level(ctx
);
1075 level
= SSL_get_security_level(s
);
1079 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
1082 if (op
== SSL_SECOP_TMP_DH
&& bits
< 80)
1088 minbits
= minbits_table
[level
- 1];
1090 case SSL_SECOP_CIPHER_SUPPORTED
:
1091 case SSL_SECOP_CIPHER_SHARED
:
1092 case SSL_SECOP_CIPHER_CHECK
:
1094 const SSL_CIPHER
*c
= other
;
1095 /* No ciphers below security level */
1098 /* No unauthenticated ciphersuites */
1099 if (c
->algorithm_auth
& SSL_aNULL
)
1101 /* No MD5 mac ciphersuites */
1102 if (c
->algorithm_mac
& SSL_MD5
)
1104 /* SHA1 HMAC is 160 bits of security */
1105 if (minbits
> 160 && c
->algorithm_mac
& SSL_SHA1
)
1107 /* Level 2: no RC4 */
1108 if (level
>= 2 && c
->algorithm_enc
== SSL_RC4
)
1110 /* Level 3: forward secure ciphersuites only */
1111 if (level
>= 3 && !(c
->algorithm_mkey
& (SSL_kEDH
| SSL_kEECDH
)))
1115 case SSL_SECOP_VERSION
:
1116 if (!SSL_IS_DTLS(s
)) {
1117 /* SSLv3 not allowed at level 2 */
1118 if (nid
<= SSL3_VERSION
&& level
>= 2)
1120 /* TLS v1.1 and above only for level 3 */
1121 if (nid
<= TLS1_VERSION
&& level
>= 3)
1123 /* TLS v1.2 only for level 4 and above */
1124 if (nid
<= TLS1_1_VERSION
&& level
>= 4)
1127 /* DTLS v1.2 only for level 4 and above */
1128 if (DTLS_VERSION_LT(nid
, DTLS1_2_VERSION
) && level
>= 4)
1133 case SSL_SECOP_COMPRESSION
:
1137 case SSL_SECOP_TICKET
:
1148 int ssl_security(const SSL
*s
, int op
, int bits
, int nid
, void *other
)
1150 return s
->cert
->sec_cb(s
, NULL
, op
, bits
, nid
, other
, s
->cert
->sec_ex
);
1153 int ssl_ctx_security(const SSL_CTX
*ctx
, int op
, int bits
, int nid
, void *other
)
1155 return ctx
->cert
->sec_cb(NULL
, ctx
, op
, bits
, nid
, other
,