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>
126 #include "internal/o_dir.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 CERT
*ssl_cert_new(void)
170 CERT
*ret
= OPENSSL_zalloc(sizeof(*ret
));
173 SSLerr(SSL_F_SSL_CERT_NEW
, ERR_R_MALLOC_FAILURE
);
177 ret
->key
= &(ret
->pkeys
[SSL_PKEY_RSA_ENC
]);
179 ret
->sec_cb
= ssl_security_default_callback
;
180 ret
->sec_level
= OPENSSL_TLS_SECURITY_LEVEL
;
185 CERT
*ssl_cert_dup(CERT
*cert
)
187 CERT
*ret
= OPENSSL_zalloc(sizeof(*ret
));
191 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
196 ret
->key
= &ret
->pkeys
[cert
->key
- cert
->pkeys
];
198 #ifndef OPENSSL_NO_DH
199 if (cert
->dh_tmp
!= NULL
) {
200 ret
->dh_tmp
= DHparams_dup(cert
->dh_tmp
);
201 if (ret
->dh_tmp
== NULL
) {
202 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_DH_LIB
);
205 if (cert
->dh_tmp
->priv_key
) {
206 BIGNUM
*b
= BN_dup(cert
->dh_tmp
->priv_key
);
208 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_BN_LIB
);
211 ret
->dh_tmp
->priv_key
= b
;
213 if (cert
->dh_tmp
->pub_key
) {
214 BIGNUM
*b
= BN_dup(cert
->dh_tmp
->pub_key
);
216 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_BN_LIB
);
219 ret
->dh_tmp
->pub_key
= b
;
222 ret
->dh_tmp_cb
= cert
->dh_tmp_cb
;
223 ret
->dh_tmp_auto
= cert
->dh_tmp_auto
;
226 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
227 CERT_PKEY
*cpk
= cert
->pkeys
+ i
;
228 CERT_PKEY
*rpk
= ret
->pkeys
+ i
;
229 if (cpk
->x509
!= NULL
) {
230 rpk
->x509
= cpk
->x509
;
231 X509_up_ref(rpk
->x509
);
234 if (cpk
->privatekey
!= NULL
) {
235 rpk
->privatekey
= cpk
->privatekey
;
236 CRYPTO_add(&cpk
->privatekey
->references
, 1, CRYPTO_LOCK_EVP_PKEY
);
240 rpk
->chain
= X509_chain_up_ref(cpk
->chain
);
242 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
246 if (cert
->pkeys
[i
].serverinfo
!= NULL
) {
247 /* Just copy everything. */
248 ret
->pkeys
[i
].serverinfo
=
249 OPENSSL_malloc(cert
->pkeys
[i
].serverinfo_length
);
250 if (ret
->pkeys
[i
].serverinfo
== NULL
) {
251 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
254 ret
->pkeys
[i
].serverinfo_length
=
255 cert
->pkeys
[i
].serverinfo_length
;
256 memcpy(ret
->pkeys
[i
].serverinfo
,
257 cert
->pkeys
[i
].serverinfo
,
258 cert
->pkeys
[i
].serverinfo_length
);
262 /* Configured sigalgs copied across */
263 if (cert
->conf_sigalgs
) {
264 ret
->conf_sigalgs
= OPENSSL_malloc(cert
->conf_sigalgslen
);
265 if (ret
->conf_sigalgs
== NULL
)
267 memcpy(ret
->conf_sigalgs
, cert
->conf_sigalgs
, cert
->conf_sigalgslen
);
268 ret
->conf_sigalgslen
= cert
->conf_sigalgslen
;
270 ret
->conf_sigalgs
= NULL
;
272 if (cert
->client_sigalgs
) {
273 ret
->client_sigalgs
= OPENSSL_malloc(cert
->client_sigalgslen
);
274 if (ret
->client_sigalgs
== NULL
)
276 memcpy(ret
->client_sigalgs
, cert
->client_sigalgs
,
277 cert
->client_sigalgslen
);
278 ret
->client_sigalgslen
= cert
->client_sigalgslen
;
280 ret
->client_sigalgs
= NULL
;
281 /* Shared sigalgs also NULL */
282 ret
->shared_sigalgs
= NULL
;
283 /* Copy any custom client certificate types */
285 ret
->ctypes
= OPENSSL_malloc(cert
->ctype_num
);
286 if (ret
->ctypes
== NULL
)
288 memcpy(ret
->ctypes
, cert
->ctypes
, cert
->ctype_num
);
289 ret
->ctype_num
= cert
->ctype_num
;
292 ret
->cert_flags
= cert
->cert_flags
;
294 ret
->cert_cb
= cert
->cert_cb
;
295 ret
->cert_cb_arg
= cert
->cert_cb_arg
;
297 if (cert
->verify_store
) {
298 CRYPTO_add(&cert
->verify_store
->references
, 1,
299 CRYPTO_LOCK_X509_STORE
);
300 ret
->verify_store
= cert
->verify_store
;
303 if (cert
->chain_store
) {
304 CRYPTO_add(&cert
->chain_store
->references
, 1, CRYPTO_LOCK_X509_STORE
);
305 ret
->chain_store
= cert
->chain_store
;
308 ret
->sec_cb
= cert
->sec_cb
;
309 ret
->sec_level
= cert
->sec_level
;
310 ret
->sec_ex
= cert
->sec_ex
;
312 if (!custom_exts_copy(&ret
->cli_ext
, &cert
->cli_ext
))
314 if (!custom_exts_copy(&ret
->srv_ext
, &cert
->srv_ext
))
316 #ifndef OPENSSL_NO_PSK
317 if (cert
->psk_identity_hint
) {
318 ret
->psk_identity_hint
= OPENSSL_strdup(cert
->psk_identity_hint
);
319 if (ret
->psk_identity_hint
== NULL
)
331 /* Free up and clear all certificates and chains */
333 void ssl_cert_clear_certs(CERT
*c
)
338 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
339 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
340 X509_free(cpk
->x509
);
342 EVP_PKEY_free(cpk
->privatekey
);
343 cpk
->privatekey
= NULL
;
344 sk_X509_pop_free(cpk
->chain
, X509_free
);
346 OPENSSL_free(cpk
->serverinfo
);
347 cpk
->serverinfo
= NULL
;
348 cpk
->serverinfo_length
= 0;
352 void ssl_cert_free(CERT
*c
)
359 i
= CRYPTO_add(&c
->references
, -1, CRYPTO_LOCK_SSL_CERT
);
361 REF_PRINT("CERT", c
);
367 fprintf(stderr
, "ssl_cert_free, bad reference count\n");
372 #ifndef OPENSSL_NO_DH
376 ssl_cert_clear_certs(c
);
377 OPENSSL_free(c
->conf_sigalgs
);
378 OPENSSL_free(c
->client_sigalgs
);
379 OPENSSL_free(c
->shared_sigalgs
);
380 OPENSSL_free(c
->ctypes
);
381 X509_STORE_free(c
->verify_store
);
382 X509_STORE_free(c
->chain_store
);
383 custom_exts_free(&c
->cli_ext
);
384 custom_exts_free(&c
->srv_ext
);
385 #ifndef OPENSSL_NO_PSK
386 OPENSSL_free(c
->psk_identity_hint
);
391 int ssl_cert_set0_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
394 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
397 sk_X509_pop_free(cpk
->chain
, X509_free
);
398 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
399 r
= ssl_security_cert(s
, ctx
, sk_X509_value(chain
, i
), 0, 0);
401 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN
, r
);
409 int ssl_cert_set1_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
411 STACK_OF(X509
) *dchain
;
413 return ssl_cert_set0_chain(s
, ctx
, NULL
);
414 dchain
= X509_chain_up_ref(chain
);
417 if (!ssl_cert_set0_chain(s
, ctx
, dchain
)) {
418 sk_X509_pop_free(dchain
, X509_free
);
424 int ssl_cert_add0_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
427 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
430 r
= ssl_security_cert(s
, ctx
, x
, 0, 0);
432 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT
, r
);
436 cpk
->chain
= sk_X509_new_null();
437 if (!cpk
->chain
|| !sk_X509_push(cpk
->chain
, x
))
442 int ssl_cert_add1_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
444 if (!ssl_cert_add0_chain_cert(s
, ctx
, x
))
450 int ssl_cert_select_current(CERT
*c
, X509
*x
)
455 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
456 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
457 if (cpk
->x509
== x
&& cpk
->privatekey
) {
463 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
464 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
465 if (cpk
->privatekey
&& cpk
->x509
&& !X509_cmp(cpk
->x509
, x
)) {
473 int ssl_cert_set_current(CERT
*c
, long op
)
478 if (op
== SSL_CERT_SET_FIRST
)
480 else if (op
== SSL_CERT_SET_NEXT
) {
481 idx
= (int)(c
->key
- c
->pkeys
+ 1);
482 if (idx
>= SSL_PKEY_NUM
)
486 for (i
= idx
; i
< SSL_PKEY_NUM
; i
++) {
487 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
488 if (cpk
->x509
&& cpk
->privatekey
) {
496 void ssl_cert_set_cert_cb(CERT
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
499 c
->cert_cb_arg
= arg
;
502 int ssl_verify_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
)
506 X509_STORE
*verify_store
;
509 if (s
->cert
->verify_store
)
510 verify_store
= s
->cert
->verify_store
;
512 verify_store
= s
->ctx
->cert_store
;
514 if ((sk
== NULL
) || (sk_X509_num(sk
) == 0))
517 x
= sk_X509_value(sk
, 0);
518 if (!X509_STORE_CTX_init(&ctx
, verify_store
, x
, sk
)) {
519 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_X509_LIB
);
522 /* Set suite B flags if needed */
523 X509_STORE_CTX_set_flags(&ctx
, tls1_suiteb(s
));
524 X509_STORE_CTX_set_ex_data(&ctx
, SSL_get_ex_data_X509_STORE_CTX_idx(), s
);
527 * We need to inherit the verify parameters. These can be determined by
528 * the context: if its a server it will verify SSL client certificates or
532 X509_STORE_CTX_set_default(&ctx
, s
->server
? "ssl_client" : "ssl_server");
534 * Anything non-default in "param" should overwrite anything in the ctx.
536 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx
), s
->param
);
538 if (s
->verify_callback
)
539 X509_STORE_CTX_set_verify_cb(&ctx
, s
->verify_callback
);
541 if (s
->ctx
->app_verify_callback
!= NULL
)
542 i
= s
->ctx
->app_verify_callback(&ctx
, s
->ctx
->app_verify_arg
);
544 i
= X509_verify_cert(&ctx
);
546 /* Dummy error calls so mkerr generates them */
547 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_EE_KEY_TOO_SMALL
);
548 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_CA_KEY_TOO_SMALL
);
549 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_CA_MD_TOO_WEAK
);
552 i
= ssl_security_cert_chain(s
, ctx
.chain
, NULL
, 1);
555 s
->verify_result
= ctx
.error
;
556 X509_STORE_CTX_cleanup(&ctx
);
561 static void set_client_CA_list(STACK_OF(X509_NAME
) **ca_list
,
562 STACK_OF(X509_NAME
) *name_list
)
564 sk_X509_NAME_pop_free(*ca_list
, X509_NAME_free
);
565 *ca_list
= name_list
;
568 STACK_OF(X509_NAME
) *SSL_dup_CA_list(STACK_OF(X509_NAME
) *sk
)
571 STACK_OF(X509_NAME
) *ret
;
574 ret
= sk_X509_NAME_new_null();
575 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
576 name
= X509_NAME_dup(sk_X509_NAME_value(sk
, i
));
577 if ((name
== NULL
) || !sk_X509_NAME_push(ret
, name
)) {
578 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
585 void SSL_set_client_CA_list(SSL
*s
, STACK_OF(X509_NAME
) *name_list
)
587 set_client_CA_list(&(s
->client_CA
), name_list
);
590 void SSL_CTX_set_client_CA_list(SSL_CTX
*ctx
, STACK_OF(X509_NAME
) *name_list
)
592 set_client_CA_list(&(ctx
->client_CA
), name_list
);
595 STACK_OF(X509_NAME
) *SSL_CTX_get_client_CA_list(const SSL_CTX
*ctx
)
597 return (ctx
->client_CA
);
600 STACK_OF(X509_NAME
) *SSL_get_client_CA_list(const SSL
*s
)
602 if (!s
->server
) { /* we are in the client */
603 if (((s
->version
>> 8) == SSL3_VERSION_MAJOR
) && (s
->s3
!= NULL
))
604 return (s
->s3
->tmp
.ca_names
);
608 if (s
->client_CA
!= NULL
)
609 return (s
->client_CA
);
611 return (s
->ctx
->client_CA
);
615 static int add_client_CA(STACK_OF(X509_NAME
) **sk
, X509
*x
)
621 if ((*sk
== NULL
) && ((*sk
= sk_X509_NAME_new_null()) == NULL
))
624 if ((name
= X509_NAME_dup(X509_get_subject_name(x
))) == NULL
)
627 if (!sk_X509_NAME_push(*sk
, name
)) {
628 X509_NAME_free(name
);
634 int SSL_add_client_CA(SSL
*ssl
, X509
*x
)
636 return (add_client_CA(&(ssl
->client_CA
), x
));
639 int SSL_CTX_add_client_CA(SSL_CTX
*ctx
, X509
*x
)
641 return (add_client_CA(&(ctx
->client_CA
), x
));
644 static int xname_cmp(const X509_NAME
*const *a
, const X509_NAME
*const *b
)
646 return (X509_NAME_cmp(*a
, *b
));
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
)
661 X509_NAME
*xn
= NULL
;
662 STACK_OF(X509_NAME
) *ret
= NULL
, *sk
;
664 sk
= sk_X509_NAME_new(xname_cmp
);
666 in
= BIO_new(BIO_s_file());
668 if ((sk
== NULL
) || (in
== NULL
)) {
669 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
673 if (!BIO_read_filename(in
, file
))
677 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
680 ret
= sk_X509_NAME_new_null();
682 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
686 if ((xn
= X509_get_subject_name(x
)) == NULL
)
688 /* check for duplicates */
689 xn
= X509_NAME_dup(xn
);
692 if (sk_X509_NAME_find(sk
, xn
) >= 0)
695 sk_X509_NAME_push(sk
, xn
);
696 sk_X509_NAME_push(ret
, xn
);
702 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
705 sk_X509_NAME_free(sk
);
714 * Add a file of certs to a stack.
715 * \param stack the stack to add to.
716 * \param file the file to add from. All certs in this file that are not
717 * already in the stack will be added.
718 * \return 1 for success, 0 for failure. Note that in the case of failure some
719 * certs may have been added to \c stack.
722 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
727 X509_NAME
*xn
= NULL
;
729 int (*oldcmp
) (const X509_NAME
*const *a
, const X509_NAME
*const *b
);
731 oldcmp
= sk_X509_NAME_set_cmp_func(stack
, xname_cmp
);
733 in
= BIO_new(BIO_s_file());
736 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK
,
737 ERR_R_MALLOC_FAILURE
);
741 if (!BIO_read_filename(in
, file
))
745 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
747 if ((xn
= X509_get_subject_name(x
)) == NULL
)
749 xn
= X509_NAME_dup(xn
);
752 if (sk_X509_NAME_find(stack
, xn
) >= 0)
755 sk_X509_NAME_push(stack
, xn
);
766 (void)sk_X509_NAME_set_cmp_func(stack
, oldcmp
);
771 * Add a directory of certs to a stack.
772 * \param stack the stack to append to.
773 * \param dir the directory to append from. All files in this directory will be
774 * examined as potential certs. Any that are acceptable to
775 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
777 * \return 1 for success, 0 for failure. Note that in the case of failure some
778 * certs may have been added to \c stack.
781 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
784 OPENSSL_DIR_CTX
*d
= NULL
;
785 const char *filename
;
788 CRYPTO_w_lock(CRYPTO_LOCK_READDIR
);
790 /* Note that a side effect is that the CAs will be sorted by name */
792 while ((filename
= OPENSSL_DIR_read(&d
, dir
))) {
796 if (strlen(dir
) + strlen(filename
) + 2 > sizeof buf
) {
797 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
,
798 SSL_R_PATH_TOO_LONG
);
801 #ifdef OPENSSL_SYS_VMS
802 r
= BIO_snprintf(buf
, sizeof buf
, "%s%s", dir
, filename
);
804 r
= BIO_snprintf(buf
, sizeof buf
, "%s/%s", dir
, filename
);
806 if (r
<= 0 || r
>= (int)sizeof(buf
))
808 if (!SSL_add_file_cert_subjects_to_stack(stack
, buf
))
813 SYSerr(SYS_F_OPENDIR
, get_last_sys_error());
814 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir
, "')");
815 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
, ERR_R_SYS_LIB
);
824 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR
);
828 /* Add a certificate to a BUF_MEM structure */
830 static int ssl_add_cert_to_buf(BUF_MEM
*buf
, unsigned long *l
, X509
*x
)
835 n
= i2d_X509(x
, NULL
);
836 if (!BUF_MEM_grow_clean(buf
, (int)(n
+ (*l
) + 3))) {
837 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF
, ERR_R_BUF_LIB
);
840 p
= (unsigned char *)&(buf
->data
[*l
]);
848 /* Add certificate chain to internal SSL BUF_MEM strcuture */
849 int ssl_add_cert_chain(SSL
*s
, CERT_PKEY
*cpk
, unsigned long *l
)
851 BUF_MEM
*buf
= s
->init_buf
;
855 STACK_OF(X509
) *extra_certs
;
856 X509_STORE
*chain_store
;
858 /* TLSv1 sends a chain with nothing in it, instead of an alert */
859 if (!BUF_MEM_grow_clean(buf
, 10)) {
860 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_BUF_LIB
);
864 if (!cpk
|| !cpk
->x509
)
870 * If we have a certificate specific chain use it, else use parent ctx.
873 extra_certs
= cpk
->chain
;
875 extra_certs
= s
->ctx
->extra_certs
;
877 if ((s
->mode
& SSL_MODE_NO_AUTO_CHAIN
) || extra_certs
)
879 else if (s
->cert
->chain_store
)
880 chain_store
= s
->cert
->chain_store
;
882 chain_store
= s
->ctx
->cert_store
;
885 X509_STORE_CTX xs_ctx
;
887 if (!X509_STORE_CTX_init(&xs_ctx
, chain_store
, x
, NULL
)) {
888 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_X509_LIB
);
892 * It is valid for the chain not to be complete (because normally we
893 * don't include the root cert in the chain). Therefore we deliberately
894 * ignore the error return from this call. We're not actually verifying
895 * the cert - we're just building as much of the chain as we can
897 X509_verify_cert(&xs_ctx
);
898 /* Don't leave errors in the queue */
900 i
= ssl_security_cert_chain(s
, xs_ctx
.chain
, NULL
, 0);
902 X509_STORE_CTX_cleanup(&xs_ctx
);
903 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
906 for (i
= 0; i
< sk_X509_num(xs_ctx
.chain
); i
++) {
907 x
= sk_X509_value(xs_ctx
.chain
, i
);
909 if (!ssl_add_cert_to_buf(buf
, l
, x
)) {
910 X509_STORE_CTX_cleanup(&xs_ctx
);
914 X509_STORE_CTX_cleanup(&xs_ctx
);
916 i
= ssl_security_cert_chain(s
, extra_certs
, x
, 0);
918 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
921 if (!ssl_add_cert_to_buf(buf
, l
, x
))
923 for (i
= 0; i
< sk_X509_num(extra_certs
); i
++) {
924 x
= sk_X509_value(extra_certs
, i
);
925 if (!ssl_add_cert_to_buf(buf
, l
, x
))
932 /* Build a certificate chain for current certificate */
933 int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
)
935 CERT
*c
= s
? s
->cert
: ctx
->cert
;
936 CERT_PKEY
*cpk
= c
->key
;
937 X509_STORE
*chain_store
= NULL
;
938 X509_STORE_CTX xs_ctx
;
939 STACK_OF(X509
) *chain
= NULL
, *untrusted
= NULL
;
945 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_NO_CERTIFICATE_SET
);
948 /* Rearranging and check the chain: add everything to a store */
949 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
) {
950 chain_store
= X509_STORE_new();
951 if (chain_store
== NULL
)
953 for (i
= 0; i
< sk_X509_num(cpk
->chain
); i
++) {
954 x
= sk_X509_value(cpk
->chain
, i
);
955 if (!X509_STORE_add_cert(chain_store
, x
)) {
956 error
= ERR_peek_last_error();
957 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
958 ERR_GET_REASON(error
) !=
959 X509_R_CERT_ALREADY_IN_HASH_TABLE
)
964 /* Add EE cert too: it might be self signed */
965 if (!X509_STORE_add_cert(chain_store
, cpk
->x509
)) {
966 error
= ERR_peek_last_error();
967 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
968 ERR_GET_REASON(error
) != X509_R_CERT_ALREADY_IN_HASH_TABLE
)
974 chain_store
= c
->chain_store
;
976 chain_store
= s
->ctx
->cert_store
;
978 chain_store
= ctx
->cert_store
;
980 if (flags
& SSL_BUILD_CHAIN_FLAG_UNTRUSTED
)
981 untrusted
= cpk
->chain
;
984 if (!X509_STORE_CTX_init(&xs_ctx
, chain_store
, cpk
->x509
, untrusted
)) {
985 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, ERR_R_X509_LIB
);
988 /* Set suite B flags if needed */
989 X509_STORE_CTX_set_flags(&xs_ctx
,
990 c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
);
992 i
= X509_verify_cert(&xs_ctx
);
993 if (i
<= 0 && flags
& SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR
) {
994 if (flags
& SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR
)
1000 chain
= X509_STORE_CTX_get1_chain(&xs_ctx
);
1002 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_CERTIFICATE_VERIFY_FAILED
);
1003 i
= X509_STORE_CTX_get_error(&xs_ctx
);
1004 ERR_add_error_data(2, "Verify error:",
1005 X509_verify_cert_error_string(i
));
1007 X509_STORE_CTX_cleanup(&xs_ctx
);
1010 X509_STORE_CTX_cleanup(&xs_ctx
);
1011 /* Remove EE certificate from chain */
1012 x
= sk_X509_shift(chain
);
1014 if (flags
& SSL_BUILD_CHAIN_FLAG_NO_ROOT
) {
1015 if (sk_X509_num(chain
) > 0) {
1016 /* See if last cert is self signed */
1017 x
= sk_X509_value(chain
, sk_X509_num(chain
) - 1);
1018 if (X509_get_extension_flags(x
) & EXFLAG_SS
) {
1019 x
= sk_X509_pop(chain
);
1025 * Check security level of all CA certificates: EE will have been checked
1028 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
1029 x
= sk_X509_value(chain
, i
);
1030 rv
= ssl_security_cert(s
, ctx
, x
, 0, 0);
1032 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, rv
);
1033 sk_X509_pop_free(chain
, X509_free
);
1038 sk_X509_pop_free(cpk
->chain
, X509_free
);
1043 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
)
1044 X509_STORE_free(chain_store
);
1049 int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
, int ref
)
1051 X509_STORE
**pstore
;
1053 pstore
= &c
->chain_store
;
1055 pstore
= &c
->verify_store
;
1056 X509_STORE_free(*pstore
);
1059 CRYPTO_add(&store
->references
, 1, CRYPTO_LOCK_X509_STORE
);
1063 static int ssl_security_default_callback(SSL
*s
, SSL_CTX
*ctx
, int op
,
1064 int bits
, int nid
, void *other
,
1068 static const int minbits_table
[5] = { 80, 112, 128, 192, 256 };
1070 level
= SSL_CTX_get_security_level(ctx
);
1072 level
= SSL_get_security_level(s
);
1073 /* Level 0: anything goes */
1078 minbits
= minbits_table
[level
- 1];
1080 case SSL_SECOP_CIPHER_SUPPORTED
:
1081 case SSL_SECOP_CIPHER_SHARED
:
1082 case SSL_SECOP_CIPHER_CHECK
:
1084 const SSL_CIPHER
*c
= other
;
1085 /* No ciphers below security level */
1088 /* No unauthenticated ciphersuites */
1089 if (c
->algorithm_auth
& SSL_aNULL
)
1091 /* No MD5 mac ciphersuites */
1092 if (c
->algorithm_mac
& SSL_MD5
)
1094 /* SHA1 HMAC is 160 bits of security */
1095 if (minbits
> 160 && c
->algorithm_mac
& SSL_SHA1
)
1097 /* Level 2: no RC4 */
1098 if (level
>= 2 && c
->algorithm_enc
== SSL_RC4
)
1100 /* Level 3: forward secure ciphersuites only */
1101 if (level
>= 3 && !(c
->algorithm_mkey
& (SSL_kEDH
| SSL_kEECDH
)))
1105 case SSL_SECOP_VERSION
:
1106 /* SSLv3 not allowed on level 2 */
1107 if (nid
<= SSL3_VERSION
&& level
>= 2)
1109 /* TLS v1.1 and above only for level 3 */
1110 if (nid
<= TLS1_VERSION
&& level
>= 3)
1112 /* TLS v1.2 only for level 4 and above */
1113 if (nid
<= TLS1_1_VERSION
&& level
>= 4)
1117 case SSL_SECOP_COMPRESSION
:
1121 case SSL_SECOP_TICKET
:
1132 int ssl_security(SSL
*s
, int op
, int bits
, int nid
, void *other
)
1134 return s
->cert
->sec_cb(s
, NULL
, op
, bits
, nid
, other
, s
->cert
->sec_ex
);
1137 int ssl_ctx_security(SSL_CTX
*ctx
, int op
, int bits
, int nid
, void *other
)
1139 return ctx
->cert
->sec_cb(NULL
, ctx
, op
, bits
, nid
, other
,