2 * ! \file ssl/ssl_cert.c
4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
60 /* ====================================================================
61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
67 * 1. Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in
72 * the documentation and/or other materials provided with the
75 * 3. All advertising materials mentioning features or use of this
76 * software must display the following acknowledgment:
77 * "This product includes software developed by the OpenSSL Project
78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81 * endorse or promote products derived from this software without
82 * prior written permission. For written permission, please contact
83 * openssl-core@openssl.org.
85 * 5. Products derived from this software may not be called "OpenSSL"
86 * nor may "OpenSSL" appear in their names without prior written
87 * permission of the OpenSSL Project.
89 * 6. Redistributions of any form whatsoever must retain the following
91 * "This product includes software developed by the OpenSSL Project
92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105 * OF THE POSSIBILITY OF SUCH DAMAGE.
106 * ====================================================================
108 * This product includes cryptographic software written by Eric Young
109 * (eay@cryptsoft.com). This product includes software written by Tim
110 * Hudson (tjh@cryptsoft.com).
113 /* ====================================================================
114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115 * ECC cipher suite support in OpenSSL originally developed by
116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
122 #ifndef NO_SYS_TYPES_H
123 # include <sys/types.h>
127 #include <openssl/objects.h>
128 #include <openssl/bio.h>
129 #include <openssl/pem.h>
130 #include <openssl/x509v3.h>
131 #ifndef OPENSSL_NO_DH
132 # include <openssl/dh.h>
134 #include <openssl/bn.h>
135 #include "ssl_locl.h"
137 static int ssl_security_default_callback(SSL
*s
, SSL_CTX
*ctx
, int op
,
138 int bits
, int nid
, void *other
,
141 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
143 static volatile int ssl_x509_store_ctx_idx
= -1;
144 int got_write_lock
= 0;
146 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX
);
148 if (ssl_x509_store_ctx_idx
< 0) {
149 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX
);
150 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX
);
153 if (ssl_x509_store_ctx_idx
< 0) {
154 ssl_x509_store_ctx_idx
=
155 X509_STORE_CTX_get_ex_new_index(0, "SSL for verify callback",
161 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX
);
163 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX
);
165 return ssl_x509_store_ctx_idx
;
168 void ssl_cert_set_default_md(CERT
*cert
)
170 /* Set digest values to defaults */
171 #ifndef OPENSSL_NO_DSA
172 cert
->pkeys
[SSL_PKEY_DSA_SIGN
].digest
= EVP_sha1();
174 #ifndef OPENSSL_NO_RSA
175 cert
->pkeys
[SSL_PKEY_RSA_SIGN
].digest
= EVP_sha1();
176 cert
->pkeys
[SSL_PKEY_RSA_ENC
].digest
= EVP_sha1();
178 #ifndef OPENSSL_NO_EC
179 cert
->pkeys
[SSL_PKEY_ECC
].digest
= EVP_sha1();
183 CERT
*ssl_cert_new(void)
187 ret
= (CERT
*)OPENSSL_malloc(sizeof(CERT
));
189 SSLerr(SSL_F_SSL_CERT_NEW
, ERR_R_MALLOC_FAILURE
);
192 memset(ret
, 0, sizeof(CERT
));
194 ret
->key
= &(ret
->pkeys
[SSL_PKEY_RSA_ENC
]);
196 ssl_cert_set_default_md(ret
);
197 ret
->sec_cb
= ssl_security_default_callback
;
198 ret
->sec_level
= OPENSSL_TLS_SECURITY_LEVEL
;
203 CERT
*ssl_cert_dup(CERT
*cert
)
208 ret
= (CERT
*)OPENSSL_malloc(sizeof(CERT
));
210 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
214 memset(ret
, 0, sizeof(CERT
));
216 ret
->key
= &ret
->pkeys
[cert
->key
- &cert
->pkeys
[0]];
218 * or ret->key = ret->pkeys + (cert->key - cert->pkeys), if you find that
222 ret
->valid
= cert
->valid
;
223 ret
->mask_k
= cert
->mask_k
;
224 ret
->mask_a
= cert
->mask_a
;
225 ret
->export_mask_k
= cert
->export_mask_k
;
226 ret
->export_mask_a
= cert
->export_mask_a
;
228 #ifndef OPENSSL_NO_RSA
229 if (cert
->rsa_tmp
!= NULL
) {
230 RSA_up_ref(cert
->rsa_tmp
);
231 ret
->rsa_tmp
= cert
->rsa_tmp
;
233 ret
->rsa_tmp_cb
= cert
->rsa_tmp_cb
;
236 #ifndef OPENSSL_NO_DH
237 if (cert
->dh_tmp
!= NULL
) {
238 ret
->dh_tmp
= DHparams_dup(cert
->dh_tmp
);
239 if (ret
->dh_tmp
== NULL
) {
240 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_DH_LIB
);
243 if (cert
->dh_tmp
->priv_key
) {
244 BIGNUM
*b
= BN_dup(cert
->dh_tmp
->priv_key
);
246 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_BN_LIB
);
249 ret
->dh_tmp
->priv_key
= b
;
251 if (cert
->dh_tmp
->pub_key
) {
252 BIGNUM
*b
= BN_dup(cert
->dh_tmp
->pub_key
);
254 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_BN_LIB
);
257 ret
->dh_tmp
->pub_key
= b
;
260 ret
->dh_tmp_cb
= cert
->dh_tmp_cb
;
261 ret
->dh_tmp_auto
= cert
->dh_tmp_auto
;
264 #ifndef OPENSSL_NO_EC
265 if (cert
->ecdh_tmp
) {
266 ret
->ecdh_tmp
= EC_KEY_dup(cert
->ecdh_tmp
);
267 if (ret
->ecdh_tmp
== NULL
) {
268 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_EC_LIB
);
272 ret
->ecdh_tmp_cb
= cert
->ecdh_tmp_cb
;
273 ret
->ecdh_tmp_auto
= cert
->ecdh_tmp_auto
;
276 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
277 CERT_PKEY
*cpk
= cert
->pkeys
+ i
;
278 CERT_PKEY
*rpk
= ret
->pkeys
+ i
;
279 if (cpk
->x509
!= NULL
) {
280 rpk
->x509
= cpk
->x509
;
281 CRYPTO_add(&rpk
->x509
->references
, 1, CRYPTO_LOCK_X509
);
284 if (cpk
->privatekey
!= NULL
) {
285 rpk
->privatekey
= cpk
->privatekey
;
286 CRYPTO_add(&cpk
->privatekey
->references
, 1, CRYPTO_LOCK_EVP_PKEY
);
290 rpk
->chain
= X509_chain_up_ref(cpk
->chain
);
292 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
296 rpk
->valid_flags
= 0;
297 #ifndef OPENSSL_NO_TLSEXT
298 if (cert
->pkeys
[i
].serverinfo
!= NULL
) {
299 /* Just copy everything. */
300 ret
->pkeys
[i
].serverinfo
=
301 OPENSSL_malloc(cert
->pkeys
[i
].serverinfo_length
);
302 if (ret
->pkeys
[i
].serverinfo
== NULL
) {
303 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
306 ret
->pkeys
[i
].serverinfo_length
=
307 cert
->pkeys
[i
].serverinfo_length
;
308 memcpy(ret
->pkeys
[i
].serverinfo
,
309 cert
->pkeys
[i
].serverinfo
,
310 cert
->pkeys
[i
].serverinfo_length
);
317 * Set digests to defaults. NB: we don't copy existing values as they
318 * will be set during handshake.
320 ssl_cert_set_default_md(ret
);
321 /* Peer sigalgs set to NULL as we get these from handshake too */
322 ret
->peer_sigalgs
= NULL
;
323 ret
->peer_sigalgslen
= 0;
324 /* Configured sigalgs however we copy across */
326 if (cert
->conf_sigalgs
) {
327 ret
->conf_sigalgs
= OPENSSL_malloc(cert
->conf_sigalgslen
);
328 if (!ret
->conf_sigalgs
)
330 memcpy(ret
->conf_sigalgs
, cert
->conf_sigalgs
, cert
->conf_sigalgslen
);
331 ret
->conf_sigalgslen
= cert
->conf_sigalgslen
;
333 ret
->conf_sigalgs
= NULL
;
335 if (cert
->client_sigalgs
) {
336 ret
->client_sigalgs
= OPENSSL_malloc(cert
->client_sigalgslen
);
337 if (!ret
->client_sigalgs
)
339 memcpy(ret
->client_sigalgs
, cert
->client_sigalgs
,
340 cert
->client_sigalgslen
);
341 ret
->client_sigalgslen
= cert
->client_sigalgslen
;
343 ret
->client_sigalgs
= NULL
;
344 /* Shared sigalgs also NULL */
345 ret
->shared_sigalgs
= NULL
;
346 /* Copy any custom client certificate types */
348 ret
->ctypes
= OPENSSL_malloc(cert
->ctype_num
);
351 memcpy(ret
->ctypes
, cert
->ctypes
, cert
->ctype_num
);
352 ret
->ctype_num
= cert
->ctype_num
;
355 ret
->cert_flags
= cert
->cert_flags
;
357 ret
->cert_cb
= cert
->cert_cb
;
358 ret
->cert_cb_arg
= cert
->cert_cb_arg
;
360 if (cert
->verify_store
) {
361 CRYPTO_add(&cert
->verify_store
->references
, 1,
362 CRYPTO_LOCK_X509_STORE
);
363 ret
->verify_store
= cert
->verify_store
;
366 if (cert
->chain_store
) {
367 CRYPTO_add(&cert
->chain_store
->references
, 1, CRYPTO_LOCK_X509_STORE
);
368 ret
->chain_store
= cert
->chain_store
;
371 ret
->ciphers_raw
= NULL
;
373 ret
->sec_cb
= cert
->sec_cb
;
374 ret
->sec_level
= cert
->sec_level
;
375 ret
->sec_ex
= cert
->sec_ex
;
377 #ifndef OPENSSL_NO_TLSEXT
378 if (!custom_exts_copy(&ret
->cli_ext
, &cert
->cli_ext
))
380 if (!custom_exts_copy(&ret
->srv_ext
, &cert
->srv_ext
))
392 /* Free up and clear all certificates and chains */
394 void ssl_cert_clear_certs(CERT
*c
)
399 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
400 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
402 X509_free(cpk
->x509
);
405 if (cpk
->privatekey
) {
406 EVP_PKEY_free(cpk
->privatekey
);
407 cpk
->privatekey
= NULL
;
410 sk_X509_pop_free(cpk
->chain
, X509_free
);
413 #ifndef OPENSSL_NO_TLSEXT
414 if (cpk
->serverinfo
) {
415 OPENSSL_free(cpk
->serverinfo
);
416 cpk
->serverinfo
= NULL
;
417 cpk
->serverinfo_length
= 0;
420 /* Clear all flags apart from explicit sign */
421 cpk
->valid_flags
&= CERT_PKEY_EXPLICIT_SIGN
;
425 void ssl_cert_free(CERT
*c
)
432 i
= CRYPTO_add(&c
->references
, -1, CRYPTO_LOCK_SSL_CERT
);
434 REF_PRINT("CERT", c
);
440 fprintf(stderr
, "ssl_cert_free, bad reference count\n");
445 #ifndef OPENSSL_NO_RSA
447 RSA_free(c
->rsa_tmp
);
449 #ifndef OPENSSL_NO_DH
453 #ifndef OPENSSL_NO_EC
455 EC_KEY_free(c
->ecdh_tmp
);
458 ssl_cert_clear_certs(c
);
460 OPENSSL_free(c
->peer_sigalgs
);
462 OPENSSL_free(c
->conf_sigalgs
);
463 if (c
->client_sigalgs
)
464 OPENSSL_free(c
->client_sigalgs
);
465 if (c
->shared_sigalgs
)
466 OPENSSL_free(c
->shared_sigalgs
);
468 OPENSSL_free(c
->ctypes
);
470 X509_STORE_free(c
->verify_store
);
472 X509_STORE_free(c
->chain_store
);
474 OPENSSL_free(c
->ciphers_raw
);
475 #ifndef OPENSSL_NO_TLSEXT
476 custom_exts_free(&c
->cli_ext
);
477 custom_exts_free(&c
->srv_ext
);
480 OPENSSL_cleanse(c
->pms
, c
->pmslen
);
481 OPENSSL_free(c
->pms
);
487 int ssl_cert_inst(CERT
**o
)
490 * Create a CERT if there isn't already one (which cannot really happen,
491 * as it is initially created in SSL_CTX_new; but the earlier code
492 * usually allows for that one being non-existant, so we follow that
493 * behaviour, as it might turn out that there actually is a reason for it
494 * -- but I'm not sure that *all* of the existing code could cope with
495 * s->cert being NULL, otherwise we could do without the initialization
500 SSLerr(SSL_F_SSL_CERT_INST
, ERR_R_PASSED_NULL_PARAMETER
);
504 if ((*o
= ssl_cert_new()) == NULL
) {
505 SSLerr(SSL_F_SSL_CERT_INST
, ERR_R_MALLOC_FAILURE
);
512 int ssl_cert_set0_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
515 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
519 sk_X509_pop_free(cpk
->chain
, X509_free
);
520 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
521 r
= ssl_security_cert(s
, ctx
, sk_X509_value(chain
, i
), 0, 0);
523 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN
, r
);
531 int ssl_cert_set1_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
533 STACK_OF(X509
) *dchain
;
535 return ssl_cert_set0_chain(s
, ctx
, NULL
);
536 dchain
= X509_chain_up_ref(chain
);
539 if (!ssl_cert_set0_chain(s
, ctx
, dchain
)) {
540 sk_X509_pop_free(dchain
, X509_free
);
546 int ssl_cert_add0_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
549 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
552 r
= ssl_security_cert(s
, ctx
, x
, 0, 0);
554 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT
, r
);
558 cpk
->chain
= sk_X509_new_null();
559 if (!cpk
->chain
|| !sk_X509_push(cpk
->chain
, x
))
564 int ssl_cert_add1_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
566 if (!ssl_cert_add0_chain_cert(s
, ctx
, x
))
568 CRYPTO_add(&x
->references
, 1, CRYPTO_LOCK_X509
);
572 int ssl_cert_select_current(CERT
*c
, X509
*x
)
577 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
578 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
579 if (cpk
->x509
== x
&& cpk
->privatekey
) {
585 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
586 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
587 if (cpk
->privatekey
&& cpk
->x509
&& !X509_cmp(cpk
->x509
, x
)) {
595 int ssl_cert_set_current(CERT
*c
, long op
)
600 if (op
== SSL_CERT_SET_FIRST
)
602 else if (op
== SSL_CERT_SET_NEXT
) {
603 idx
= (int)(c
->key
- c
->pkeys
+ 1);
604 if (idx
>= SSL_PKEY_NUM
)
608 for (i
= idx
; i
< SSL_PKEY_NUM
; i
++) {
609 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
610 if (cpk
->x509
&& cpk
->privatekey
) {
618 void ssl_cert_set_cert_cb(CERT
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
621 c
->cert_cb_arg
= arg
;
624 SESS_CERT
*ssl_sess_cert_new(void)
628 ret
= OPENSSL_malloc(sizeof *ret
);
630 SSLerr(SSL_F_SSL_SESS_CERT_NEW
, ERR_R_MALLOC_FAILURE
);
634 memset(ret
, 0, sizeof *ret
);
635 ret
->peer_key
= &(ret
->peer_pkeys
[SSL_PKEY_RSA_ENC
]);
641 void ssl_sess_cert_free(SESS_CERT
*sc
)
648 i
= CRYPTO_add(&sc
->references
, -1, CRYPTO_LOCK_SSL_SESS_CERT
);
650 REF_PRINT("SESS_CERT", sc
);
656 fprintf(stderr
, "ssl_sess_cert_free, bad reference count\n");
662 if (sc
->cert_chain
!= NULL
)
663 sk_X509_pop_free(sc
->cert_chain
, X509_free
);
664 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
665 if (sc
->peer_pkeys
[i
].x509
!= NULL
)
666 X509_free(sc
->peer_pkeys
[i
].x509
);
669 * We don't have the peer's private key. These lines are just
670 * here as a reminder that we're still using a not-quite-appropriate
673 if (sc
->peer_pkeys
[i
].privatekey
!= NULL
)
674 EVP_PKEY_free(sc
->peer_pkeys
[i
].privatekey
);
678 #ifndef OPENSSL_NO_RSA
679 if (sc
->peer_rsa_tmp
!= NULL
)
680 RSA_free(sc
->peer_rsa_tmp
);
682 #ifndef OPENSSL_NO_DH
683 if (sc
->peer_dh_tmp
!= NULL
)
684 DH_free(sc
->peer_dh_tmp
);
686 #ifndef OPENSSL_NO_EC
687 if (sc
->peer_ecdh_tmp
!= NULL
)
688 EC_KEY_free(sc
->peer_ecdh_tmp
);
694 int ssl_set_peer_cert_type(SESS_CERT
*sc
, int type
)
696 sc
->peer_cert_type
= type
;
700 int ssl_verify_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
)
704 X509_STORE
*verify_store
;
707 if (s
->cert
->verify_store
)
708 verify_store
= s
->cert
->verify_store
;
710 verify_store
= s
->ctx
->cert_store
;
712 if ((sk
== NULL
) || (sk_X509_num(sk
) == 0))
715 x
= sk_X509_value(sk
, 0);
716 if (!X509_STORE_CTX_init(&ctx
, verify_store
, x
, sk
)) {
717 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_X509_LIB
);
720 /* Set suite B flags if needed */
721 X509_STORE_CTX_set_flags(&ctx
, tls1_suiteb(s
));
722 X509_STORE_CTX_set_ex_data(&ctx
, SSL_get_ex_data_X509_STORE_CTX_idx(), s
);
725 * We need to inherit the verify parameters. These can be determined by
726 * the context: if its a server it will verify SSL client certificates or
730 X509_STORE_CTX_set_default(&ctx
, s
->server
? "ssl_client" : "ssl_server");
732 * Anything non-default in "param" should overwrite anything in the ctx.
734 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx
), s
->param
);
736 if (s
->verify_callback
)
737 X509_STORE_CTX_set_verify_cb(&ctx
, s
->verify_callback
);
739 if (s
->ctx
->app_verify_callback
!= NULL
)
740 i
= s
->ctx
->app_verify_callback(&ctx
, s
->ctx
->app_verify_arg
);
742 i
= X509_verify_cert(&ctx
);
744 /* Dummy error calls so mkerr generates them */
745 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_EE_KEY_TOO_SMALL
);
746 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_CA_KEY_TOO_SMALL
);
747 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_CA_MD_TOO_WEAK
);
750 i
= ssl_security_cert_chain(s
, ctx
.chain
, NULL
, 1);
753 s
->verify_result
= ctx
.error
;
754 X509_STORE_CTX_cleanup(&ctx
);
759 static void set_client_CA_list(STACK_OF(X509_NAME
) **ca_list
,
760 STACK_OF(X509_NAME
) *name_list
)
762 if (*ca_list
!= NULL
)
763 sk_X509_NAME_pop_free(*ca_list
, X509_NAME_free
);
765 *ca_list
= name_list
;
768 STACK_OF(X509_NAME
) *SSL_dup_CA_list(STACK_OF(X509_NAME
) *sk
)
771 STACK_OF(X509_NAME
) *ret
;
774 ret
= sk_X509_NAME_new_null();
775 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
776 name
= X509_NAME_dup(sk_X509_NAME_value(sk
, i
));
777 if ((name
== NULL
) || !sk_X509_NAME_push(ret
, name
)) {
778 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
785 void SSL_set_client_CA_list(SSL
*s
, STACK_OF(X509_NAME
) *name_list
)
787 set_client_CA_list(&(s
->client_CA
), name_list
);
790 void SSL_CTX_set_client_CA_list(SSL_CTX
*ctx
, STACK_OF(X509_NAME
) *name_list
)
792 set_client_CA_list(&(ctx
->client_CA
), name_list
);
795 STACK_OF(X509_NAME
) *SSL_CTX_get_client_CA_list(const SSL_CTX
*ctx
)
797 return (ctx
->client_CA
);
800 STACK_OF(X509_NAME
) *SSL_get_client_CA_list(const SSL
*s
)
802 if (s
->type
== SSL_ST_CONNECT
) { /* we are in the client */
803 if (((s
->version
>> 8) == SSL3_VERSION_MAJOR
) && (s
->s3
!= NULL
))
804 return (s
->s3
->tmp
.ca_names
);
808 if (s
->client_CA
!= NULL
)
809 return (s
->client_CA
);
811 return (s
->ctx
->client_CA
);
815 static int add_client_CA(STACK_OF(X509_NAME
) **sk
, X509
*x
)
821 if ((*sk
== NULL
) && ((*sk
= sk_X509_NAME_new_null()) == NULL
))
824 if ((name
= X509_NAME_dup(X509_get_subject_name(x
))) == NULL
)
827 if (!sk_X509_NAME_push(*sk
, name
)) {
828 X509_NAME_free(name
);
834 int SSL_add_client_CA(SSL
*ssl
, X509
*x
)
836 return (add_client_CA(&(ssl
->client_CA
), x
));
839 int SSL_CTX_add_client_CA(SSL_CTX
*ctx
, X509
*x
)
841 return (add_client_CA(&(ctx
->client_CA
), x
));
844 static int xname_cmp(const X509_NAME
*const *a
, const X509_NAME
*const *b
)
846 return (X509_NAME_cmp(*a
, *b
));
849 #ifndef OPENSSL_NO_STDIO
851 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
852 * it doesn't really have anything to do with clients (except that a common use
853 * for a stack of CAs is to send it to the client). Actually, it doesn't have
854 * much to do with CAs, either, since it will load any old cert.
855 * \param file the file containing one or more certs.
856 * \return a ::STACK containing the certs.
858 STACK_OF(X509_NAME
) *SSL_load_client_CA_file(const char *file
)
862 X509_NAME
*xn
= NULL
;
863 STACK_OF(X509_NAME
) *ret
= NULL
, *sk
;
865 sk
= sk_X509_NAME_new(xname_cmp
);
867 in
= BIO_new(BIO_s_file_internal());
869 if ((sk
== NULL
) || (in
== NULL
)) {
870 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
874 if (!BIO_read_filename(in
, file
))
878 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
881 ret
= sk_X509_NAME_new_null();
883 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
887 if ((xn
= X509_get_subject_name(x
)) == NULL
)
889 /* check for duplicates */
890 xn
= X509_NAME_dup(xn
);
893 if (sk_X509_NAME_find(sk
, xn
) >= 0)
896 sk_X509_NAME_push(sk
, xn
);
897 sk_X509_NAME_push(ret
, xn
);
904 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
908 sk_X509_NAME_free(sk
);
920 * Add a file of certs to a stack.
921 * \param stack the stack to add to.
922 * \param file the file to add from. All certs in this file that are not
923 * already in the stack will be added.
924 * \return 1 for success, 0 for failure. Note that in the case of failure some
925 * certs may have been added to \c stack.
928 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
933 X509_NAME
*xn
= NULL
;
935 int (*oldcmp
) (const X509_NAME
*const *a
, const X509_NAME
*const *b
);
937 oldcmp
= sk_X509_NAME_set_cmp_func(stack
, xname_cmp
);
939 in
= BIO_new(BIO_s_file_internal());
942 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK
,
943 ERR_R_MALLOC_FAILURE
);
947 if (!BIO_read_filename(in
, file
))
951 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
953 if ((xn
= X509_get_subject_name(x
)) == NULL
)
955 xn
= X509_NAME_dup(xn
);
958 if (sk_X509_NAME_find(stack
, xn
) >= 0)
961 sk_X509_NAME_push(stack
, xn
);
975 (void)sk_X509_NAME_set_cmp_func(stack
, oldcmp
);
981 * Add a directory of certs to a stack.
982 * \param stack the stack to append to.
983 * \param dir the directory to append from. All files in this directory will be
984 * examined as potential certs. Any that are acceptable to
985 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
987 * \return 1 for success, 0 for failure. Note that in the case of failure some
988 * certs may have been added to \c stack.
991 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
994 OPENSSL_DIR_CTX
*d
= NULL
;
995 const char *filename
;
998 CRYPTO_w_lock(CRYPTO_LOCK_READDIR
);
1000 /* Note that a side effect is that the CAs will be sorted by name */
1002 while ((filename
= OPENSSL_DIR_read(&d
, dir
))) {
1006 if (strlen(dir
) + strlen(filename
) + 2 > sizeof buf
) {
1007 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
,
1008 SSL_R_PATH_TOO_LONG
);
1011 #ifdef OPENSSL_SYS_VMS
1012 r
= BIO_snprintf(buf
, sizeof buf
, "%s%s", dir
, filename
);
1014 r
= BIO_snprintf(buf
, sizeof buf
, "%s/%s", dir
, filename
);
1016 if (r
<= 0 || r
>= (int)sizeof(buf
))
1018 if (!SSL_add_file_cert_subjects_to_stack(stack
, buf
))
1023 SYSerr(SYS_F_OPENDIR
, get_last_sys_error());
1024 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir
, "')");
1025 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
, ERR_R_SYS_LIB
);
1033 OPENSSL_DIR_end(&d
);
1034 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR
);
1038 /* Add a certificate to a BUF_MEM structure */
1040 static int ssl_add_cert_to_buf(BUF_MEM
*buf
, unsigned long *l
, X509
*x
)
1045 n
= i2d_X509(x
, NULL
);
1046 if (!BUF_MEM_grow_clean(buf
, (int)(n
+ (*l
) + 3))) {
1047 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF
, ERR_R_BUF_LIB
);
1050 p
= (unsigned char *)&(buf
->data
[*l
]);
1058 /* Add certificate chain to internal SSL BUF_MEM strcuture */
1059 int ssl_add_cert_chain(SSL
*s
, CERT_PKEY
*cpk
, unsigned long *l
)
1061 BUF_MEM
*buf
= s
->init_buf
;
1065 STACK_OF(X509
) *extra_certs
;
1066 X509_STORE
*chain_store
;
1068 /* TLSv1 sends a chain with nothing in it, instead of an alert */
1069 if (!BUF_MEM_grow_clean(buf
, 10)) {
1070 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_BUF_LIB
);
1074 if (!cpk
|| !cpk
->x509
)
1080 * If we have a certificate specific chain use it, else use parent ctx.
1083 extra_certs
= cpk
->chain
;
1085 extra_certs
= s
->ctx
->extra_certs
;
1087 if ((s
->mode
& SSL_MODE_NO_AUTO_CHAIN
) || extra_certs
)
1089 else if (s
->cert
->chain_store
)
1090 chain_store
= s
->cert
->chain_store
;
1092 chain_store
= s
->ctx
->cert_store
;
1095 X509_STORE_CTX xs_ctx
;
1097 if (!X509_STORE_CTX_init(&xs_ctx
, chain_store
, x
, NULL
)) {
1098 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_X509_LIB
);
1101 X509_verify_cert(&xs_ctx
);
1102 /* Don't leave errors in the queue */
1104 i
= ssl_security_cert_chain(s
, xs_ctx
.chain
, NULL
, 0);
1106 X509_STORE_CTX_cleanup(&xs_ctx
);
1107 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
1110 for (i
= 0; i
< sk_X509_num(xs_ctx
.chain
); i
++) {
1111 x
= sk_X509_value(xs_ctx
.chain
, i
);
1113 if (!ssl_add_cert_to_buf(buf
, l
, x
)) {
1114 X509_STORE_CTX_cleanup(&xs_ctx
);
1118 X509_STORE_CTX_cleanup(&xs_ctx
);
1120 i
= ssl_security_cert_chain(s
, extra_certs
, x
, 0);
1122 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
1125 if (!ssl_add_cert_to_buf(buf
, l
, x
))
1127 for (i
= 0; i
< sk_X509_num(extra_certs
); i
++) {
1128 x
= sk_X509_value(extra_certs
, i
);
1129 if (!ssl_add_cert_to_buf(buf
, l
, x
))
1136 /* Build a certificate chain for current certificate */
1137 int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
)
1139 CERT
*c
= s
? s
->cert
: ctx
->cert
;
1140 CERT_PKEY
*cpk
= c
->key
;
1141 X509_STORE
*chain_store
= NULL
;
1142 X509_STORE_CTX xs_ctx
;
1143 STACK_OF(X509
) *chain
= NULL
, *untrusted
= NULL
;
1146 unsigned long error
;
1149 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_NO_CERTIFICATE_SET
);
1152 /* Rearranging and check the chain: add everything to a store */
1153 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
) {
1154 chain_store
= X509_STORE_new();
1157 for (i
= 0; i
< sk_X509_num(cpk
->chain
); i
++) {
1158 x
= sk_X509_value(cpk
->chain
, i
);
1159 if (!X509_STORE_add_cert(chain_store
, x
)) {
1160 error
= ERR_peek_last_error();
1161 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
1162 ERR_GET_REASON(error
) !=
1163 X509_R_CERT_ALREADY_IN_HASH_TABLE
)
1168 /* Add EE cert too: it might be self signed */
1169 if (!X509_STORE_add_cert(chain_store
, cpk
->x509
)) {
1170 error
= ERR_peek_last_error();
1171 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
1172 ERR_GET_REASON(error
) != X509_R_CERT_ALREADY_IN_HASH_TABLE
)
1178 chain_store
= c
->chain_store
;
1180 chain_store
= s
->ctx
->cert_store
;
1182 chain_store
= ctx
->cert_store
;
1184 if (flags
& SSL_BUILD_CHAIN_FLAG_UNTRUSTED
)
1185 untrusted
= cpk
->chain
;
1188 if (!X509_STORE_CTX_init(&xs_ctx
, chain_store
, cpk
->x509
, untrusted
)) {
1189 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, ERR_R_X509_LIB
);
1192 /* Set suite B flags if needed */
1193 X509_STORE_CTX_set_flags(&xs_ctx
,
1194 c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
);
1196 i
= X509_verify_cert(&xs_ctx
);
1197 if (i
<= 0 && flags
& SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR
) {
1198 if (flags
& SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR
)
1204 chain
= X509_STORE_CTX_get1_chain(&xs_ctx
);
1206 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_CERTIFICATE_VERIFY_FAILED
);
1207 i
= X509_STORE_CTX_get_error(&xs_ctx
);
1208 ERR_add_error_data(2, "Verify error:",
1209 X509_verify_cert_error_string(i
));
1211 X509_STORE_CTX_cleanup(&xs_ctx
);
1214 X509_STORE_CTX_cleanup(&xs_ctx
);
1215 /* Remove EE certificate from chain */
1216 x
= sk_X509_shift(chain
);
1218 if (flags
& SSL_BUILD_CHAIN_FLAG_NO_ROOT
) {
1219 if (sk_X509_num(chain
) > 0) {
1220 /* See if last cert is self signed */
1221 x
= sk_X509_value(chain
, sk_X509_num(chain
) - 1);
1222 X509_check_purpose(x
, -1, 0);
1223 if (x
->ex_flags
& EXFLAG_SS
) {
1224 x
= sk_X509_pop(chain
);
1230 * Check security level of all CA certificates: EE will have been checked
1233 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
1234 x
= sk_X509_value(chain
, i
);
1235 rv
= ssl_security_cert(s
, ctx
, x
, 0, 0);
1237 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, rv
);
1238 sk_X509_pop_free(chain
, X509_free
);
1244 sk_X509_pop_free(cpk
->chain
, X509_free
);
1249 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
)
1250 X509_STORE_free(chain_store
);
1255 int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
, int ref
)
1257 X509_STORE
**pstore
;
1259 pstore
= &c
->chain_store
;
1261 pstore
= &c
->verify_store
;
1263 X509_STORE_free(*pstore
);
1266 CRYPTO_add(&store
->references
, 1, CRYPTO_LOCK_X509_STORE
);
1270 static int ssl_security_default_callback(SSL
*s
, SSL_CTX
*ctx
, int op
,
1271 int bits
, int nid
, void *other
,
1275 static const int minbits_table
[5] = { 80, 112, 128, 192, 256 };
1277 level
= SSL_CTX_get_security_level(ctx
);
1279 level
= SSL_get_security_level(s
);
1280 /* Level 0: anything goes */
1285 minbits
= minbits_table
[level
- 1];
1287 case SSL_SECOP_CIPHER_SUPPORTED
:
1288 case SSL_SECOP_CIPHER_SHARED
:
1289 case SSL_SECOP_CIPHER_CHECK
:
1291 const SSL_CIPHER
*c
= other
;
1292 /* No ciphers below security level */
1295 /* No unauthenticated ciphersuites */
1296 if (c
->algorithm_auth
& SSL_aNULL
)
1298 /* No MD5 mac ciphersuites */
1299 if (c
->algorithm_mac
& SSL_MD5
)
1301 /* SHA1 HMAC is 160 bits of security */
1302 if (minbits
> 160 && c
->algorithm_mac
& SSL_SHA1
)
1304 /* Level 2: no RC4 */
1305 if (level
>= 2 && c
->algorithm_enc
== SSL_RC4
)
1307 /* Level 3: forward secure ciphersuites only */
1308 if (level
>= 3 && !(c
->algorithm_mkey
& (SSL_kEDH
| SSL_kEECDH
)))
1312 case SSL_SECOP_VERSION
:
1313 /* SSLv3 not allowed on level 2 */
1314 if (nid
<= SSL3_VERSION
&& level
>= 2)
1316 /* TLS v1.1 and above only for level 3 */
1317 if (nid
<= TLS1_VERSION
&& level
>= 3)
1319 /* TLS v1.2 only for level 4 and above */
1320 if (nid
<= TLS1_1_VERSION
&& level
>= 4)
1324 case SSL_SECOP_COMPRESSION
:
1328 case SSL_SECOP_TICKET
:
1339 int ssl_security(SSL
*s
, int op
, int bits
, int nid
, void *other
)
1341 return s
->cert
->sec_cb(s
, NULL
, op
, bits
, nid
, other
, s
->cert
->sec_ex
);
1344 int ssl_ctx_security(SSL_CTX
*ctx
, int op
, int bits
, int nid
, void *other
)
1346 return ctx
->cert
->sec_cb(NULL
, ctx
, op
, bits
, nid
, other
,