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
= cert
->dh_tmp
;
201 EVP_PKEY_up_ref(ret
->dh_tmp
);
203 ret
->dh_tmp_cb
= cert
->dh_tmp_cb
;
204 ret
->dh_tmp_auto
= cert
->dh_tmp_auto
;
207 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
208 CERT_PKEY
*cpk
= cert
->pkeys
+ i
;
209 CERT_PKEY
*rpk
= ret
->pkeys
+ i
;
210 if (cpk
->x509
!= NULL
) {
211 rpk
->x509
= cpk
->x509
;
212 X509_up_ref(rpk
->x509
);
215 if (cpk
->privatekey
!= NULL
) {
216 rpk
->privatekey
= cpk
->privatekey
;
217 CRYPTO_add(&cpk
->privatekey
->references
, 1, CRYPTO_LOCK_EVP_PKEY
);
221 rpk
->chain
= X509_chain_up_ref(cpk
->chain
);
223 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
227 if (cert
->pkeys
[i
].serverinfo
!= NULL
) {
228 /* Just copy everything. */
229 ret
->pkeys
[i
].serverinfo
=
230 OPENSSL_malloc(cert
->pkeys
[i
].serverinfo_length
);
231 if (ret
->pkeys
[i
].serverinfo
== NULL
) {
232 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
235 ret
->pkeys
[i
].serverinfo_length
=
236 cert
->pkeys
[i
].serverinfo_length
;
237 memcpy(ret
->pkeys
[i
].serverinfo
,
238 cert
->pkeys
[i
].serverinfo
,
239 cert
->pkeys
[i
].serverinfo_length
);
243 /* Configured sigalgs copied across */
244 if (cert
->conf_sigalgs
) {
245 ret
->conf_sigalgs
= OPENSSL_malloc(cert
->conf_sigalgslen
);
246 if (ret
->conf_sigalgs
== NULL
)
248 memcpy(ret
->conf_sigalgs
, cert
->conf_sigalgs
, cert
->conf_sigalgslen
);
249 ret
->conf_sigalgslen
= cert
->conf_sigalgslen
;
251 ret
->conf_sigalgs
= NULL
;
253 if (cert
->client_sigalgs
) {
254 ret
->client_sigalgs
= OPENSSL_malloc(cert
->client_sigalgslen
);
255 if (ret
->client_sigalgs
== NULL
)
257 memcpy(ret
->client_sigalgs
, cert
->client_sigalgs
,
258 cert
->client_sigalgslen
);
259 ret
->client_sigalgslen
= cert
->client_sigalgslen
;
261 ret
->client_sigalgs
= NULL
;
262 /* Shared sigalgs also NULL */
263 ret
->shared_sigalgs
= NULL
;
264 /* Copy any custom client certificate types */
266 ret
->ctypes
= OPENSSL_malloc(cert
->ctype_num
);
267 if (ret
->ctypes
== NULL
)
269 memcpy(ret
->ctypes
, cert
->ctypes
, cert
->ctype_num
);
270 ret
->ctype_num
= cert
->ctype_num
;
273 ret
->cert_flags
= cert
->cert_flags
;
275 ret
->cert_cb
= cert
->cert_cb
;
276 ret
->cert_cb_arg
= cert
->cert_cb_arg
;
278 if (cert
->verify_store
) {
279 CRYPTO_add(&cert
->verify_store
->references
, 1,
280 CRYPTO_LOCK_X509_STORE
);
281 ret
->verify_store
= cert
->verify_store
;
284 if (cert
->chain_store
) {
285 CRYPTO_add(&cert
->chain_store
->references
, 1, CRYPTO_LOCK_X509_STORE
);
286 ret
->chain_store
= cert
->chain_store
;
289 ret
->sec_cb
= cert
->sec_cb
;
290 ret
->sec_level
= cert
->sec_level
;
291 ret
->sec_ex
= cert
->sec_ex
;
293 if (!custom_exts_copy(&ret
->cli_ext
, &cert
->cli_ext
))
295 if (!custom_exts_copy(&ret
->srv_ext
, &cert
->srv_ext
))
297 #ifndef OPENSSL_NO_PSK
298 if (cert
->psk_identity_hint
) {
299 ret
->psk_identity_hint
= OPENSSL_strdup(cert
->psk_identity_hint
);
300 if (ret
->psk_identity_hint
== NULL
)
312 /* Free up and clear all certificates and chains */
314 void ssl_cert_clear_certs(CERT
*c
)
319 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
320 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
321 X509_free(cpk
->x509
);
323 EVP_PKEY_free(cpk
->privatekey
);
324 cpk
->privatekey
= NULL
;
325 sk_X509_pop_free(cpk
->chain
, X509_free
);
327 OPENSSL_free(cpk
->serverinfo
);
328 cpk
->serverinfo
= NULL
;
329 cpk
->serverinfo_length
= 0;
333 void ssl_cert_free(CERT
*c
)
340 i
= CRYPTO_add(&c
->references
, -1, CRYPTO_LOCK_SSL_CERT
);
342 REF_PRINT("CERT", c
);
348 fprintf(stderr
, "ssl_cert_free, bad reference count\n");
353 #ifndef OPENSSL_NO_DH
354 EVP_PKEY_free(c
->dh_tmp
);
357 ssl_cert_clear_certs(c
);
358 OPENSSL_free(c
->conf_sigalgs
);
359 OPENSSL_free(c
->client_sigalgs
);
360 OPENSSL_free(c
->shared_sigalgs
);
361 OPENSSL_free(c
->ctypes
);
362 X509_STORE_free(c
->verify_store
);
363 X509_STORE_free(c
->chain_store
);
364 custom_exts_free(&c
->cli_ext
);
365 custom_exts_free(&c
->srv_ext
);
366 #ifndef OPENSSL_NO_PSK
367 OPENSSL_free(c
->psk_identity_hint
);
372 int ssl_cert_set0_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
375 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
378 sk_X509_pop_free(cpk
->chain
, X509_free
);
379 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
380 r
= ssl_security_cert(s
, ctx
, sk_X509_value(chain
, i
), 0, 0);
382 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN
, r
);
390 int ssl_cert_set1_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
392 STACK_OF(X509
) *dchain
;
394 return ssl_cert_set0_chain(s
, ctx
, NULL
);
395 dchain
= X509_chain_up_ref(chain
);
398 if (!ssl_cert_set0_chain(s
, ctx
, dchain
)) {
399 sk_X509_pop_free(dchain
, X509_free
);
405 int ssl_cert_add0_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
408 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
411 r
= ssl_security_cert(s
, ctx
, x
, 0, 0);
413 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT
, r
);
417 cpk
->chain
= sk_X509_new_null();
418 if (!cpk
->chain
|| !sk_X509_push(cpk
->chain
, x
))
423 int ssl_cert_add1_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
425 if (!ssl_cert_add0_chain_cert(s
, ctx
, x
))
431 int ssl_cert_select_current(CERT
*c
, X509
*x
)
436 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
437 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
438 if (cpk
->x509
== x
&& cpk
->privatekey
) {
444 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
445 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
446 if (cpk
->privatekey
&& cpk
->x509
&& !X509_cmp(cpk
->x509
, x
)) {
454 int ssl_cert_set_current(CERT
*c
, long op
)
459 if (op
== SSL_CERT_SET_FIRST
)
461 else if (op
== SSL_CERT_SET_NEXT
) {
462 idx
= (int)(c
->key
- c
->pkeys
+ 1);
463 if (idx
>= SSL_PKEY_NUM
)
467 for (i
= idx
; i
< SSL_PKEY_NUM
; i
++) {
468 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
469 if (cpk
->x509
&& cpk
->privatekey
) {
477 void ssl_cert_set_cert_cb(CERT
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
480 c
->cert_cb_arg
= arg
;
483 int ssl_verify_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
)
487 X509_STORE
*verify_store
;
490 if (s
->cert
->verify_store
)
491 verify_store
= s
->cert
->verify_store
;
493 verify_store
= s
->ctx
->cert_store
;
495 if ((sk
== NULL
) || (sk_X509_num(sk
) == 0))
498 x
= sk_X509_value(sk
, 0);
499 if (!X509_STORE_CTX_init(&ctx
, verify_store
, x
, sk
)) {
500 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_X509_LIB
);
503 /* Set suite B flags if needed */
504 X509_STORE_CTX_set_flags(&ctx
, tls1_suiteb(s
));
505 X509_STORE_CTX_set_ex_data(&ctx
, SSL_get_ex_data_X509_STORE_CTX_idx(), s
);
508 * We need to inherit the verify parameters. These can be determined by
509 * the context: if its a server it will verify SSL client certificates or
513 X509_STORE_CTX_set_default(&ctx
, s
->server
? "ssl_client" : "ssl_server");
515 * Anything non-default in "param" should overwrite anything in the ctx.
517 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx
), s
->param
);
519 if (s
->verify_callback
)
520 X509_STORE_CTX_set_verify_cb(&ctx
, s
->verify_callback
);
522 if (s
->ctx
->app_verify_callback
!= NULL
)
523 i
= s
->ctx
->app_verify_callback(&ctx
, s
->ctx
->app_verify_arg
);
525 i
= X509_verify_cert(&ctx
);
527 /* Dummy error calls so mkerr generates them */
528 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_EE_KEY_TOO_SMALL
);
529 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_CA_KEY_TOO_SMALL
);
530 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_CA_MD_TOO_WEAK
);
533 i
= ssl_security_cert_chain(s
, ctx
.chain
, NULL
, 1);
536 s
->verify_result
= ctx
.error
;
537 X509_STORE_CTX_cleanup(&ctx
);
542 static void set_client_CA_list(STACK_OF(X509_NAME
) **ca_list
,
543 STACK_OF(X509_NAME
) *name_list
)
545 sk_X509_NAME_pop_free(*ca_list
, X509_NAME_free
);
546 *ca_list
= name_list
;
549 STACK_OF(X509_NAME
) *SSL_dup_CA_list(STACK_OF(X509_NAME
) *sk
)
552 STACK_OF(X509_NAME
) *ret
;
555 ret
= sk_X509_NAME_new_null();
556 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
557 name
= X509_NAME_dup(sk_X509_NAME_value(sk
, i
));
558 if ((name
== NULL
) || !sk_X509_NAME_push(ret
, name
)) {
559 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
566 void SSL_set_client_CA_list(SSL
*s
, STACK_OF(X509_NAME
) *name_list
)
568 set_client_CA_list(&(s
->client_CA
), name_list
);
571 void SSL_CTX_set_client_CA_list(SSL_CTX
*ctx
, STACK_OF(X509_NAME
) *name_list
)
573 set_client_CA_list(&(ctx
->client_CA
), name_list
);
576 STACK_OF(X509_NAME
) *SSL_CTX_get_client_CA_list(const SSL_CTX
*ctx
)
578 return (ctx
->client_CA
);
581 STACK_OF(X509_NAME
) *SSL_get_client_CA_list(const SSL
*s
)
583 if (!s
->server
) { /* we are in the client */
584 if (((s
->version
>> 8) == SSL3_VERSION_MAJOR
) && (s
->s3
!= NULL
))
585 return (s
->s3
->tmp
.ca_names
);
589 if (s
->client_CA
!= NULL
)
590 return (s
->client_CA
);
592 return (s
->ctx
->client_CA
);
596 static int add_client_CA(STACK_OF(X509_NAME
) **sk
, X509
*x
)
602 if ((*sk
== NULL
) && ((*sk
= sk_X509_NAME_new_null()) == NULL
))
605 if ((name
= X509_NAME_dup(X509_get_subject_name(x
))) == NULL
)
608 if (!sk_X509_NAME_push(*sk
, name
)) {
609 X509_NAME_free(name
);
615 int SSL_add_client_CA(SSL
*ssl
, X509
*x
)
617 return (add_client_CA(&(ssl
->client_CA
), x
));
620 int SSL_CTX_add_client_CA(SSL_CTX
*ctx
, X509
*x
)
622 return (add_client_CA(&(ctx
->client_CA
), x
));
625 static int xname_cmp(const X509_NAME
*const *a
, const X509_NAME
*const *b
)
627 return (X509_NAME_cmp(*a
, *b
));
631 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
632 * it doesn't really have anything to do with clients (except that a common use
633 * for a stack of CAs is to send it to the client). Actually, it doesn't have
634 * much to do with CAs, either, since it will load any old cert.
635 * \param file the file containing one or more certs.
636 * \return a ::STACK containing the certs.
638 STACK_OF(X509_NAME
) *SSL_load_client_CA_file(const char *file
)
642 X509_NAME
*xn
= NULL
;
643 STACK_OF(X509_NAME
) *ret
= NULL
, *sk
;
645 sk
= sk_X509_NAME_new(xname_cmp
);
647 in
= BIO_new(BIO_s_file());
649 if ((sk
== NULL
) || (in
== NULL
)) {
650 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
654 if (!BIO_read_filename(in
, file
))
658 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
661 ret
= sk_X509_NAME_new_null();
663 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
667 if ((xn
= X509_get_subject_name(x
)) == NULL
)
669 /* check for duplicates */
670 xn
= X509_NAME_dup(xn
);
673 if (sk_X509_NAME_find(sk
, xn
) >= 0)
676 sk_X509_NAME_push(sk
, xn
);
677 sk_X509_NAME_push(ret
, xn
);
683 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
686 sk_X509_NAME_free(sk
);
695 * Add a file of certs to a stack.
696 * \param stack the stack to add to.
697 * \param file the file to add from. All certs in this file that are not
698 * already in the stack will be added.
699 * \return 1 for success, 0 for failure. Note that in the case of failure some
700 * certs may have been added to \c stack.
703 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
708 X509_NAME
*xn
= NULL
;
710 int (*oldcmp
) (const X509_NAME
*const *a
, const X509_NAME
*const *b
);
712 oldcmp
= sk_X509_NAME_set_cmp_func(stack
, xname_cmp
);
714 in
= BIO_new(BIO_s_file());
717 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK
,
718 ERR_R_MALLOC_FAILURE
);
722 if (!BIO_read_filename(in
, file
))
726 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
728 if ((xn
= X509_get_subject_name(x
)) == NULL
)
730 xn
= X509_NAME_dup(xn
);
733 if (sk_X509_NAME_find(stack
, xn
) >= 0)
736 sk_X509_NAME_push(stack
, xn
);
747 (void)sk_X509_NAME_set_cmp_func(stack
, oldcmp
);
752 * Add a directory of certs to a stack.
753 * \param stack the stack to append to.
754 * \param dir the directory to append from. All files in this directory will be
755 * examined as potential certs. Any that are acceptable to
756 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
758 * \return 1 for success, 0 for failure. Note that in the case of failure some
759 * certs may have been added to \c stack.
762 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
765 OPENSSL_DIR_CTX
*d
= NULL
;
766 const char *filename
;
769 CRYPTO_w_lock(CRYPTO_LOCK_READDIR
);
771 /* Note that a side effect is that the CAs will be sorted by name */
773 while ((filename
= OPENSSL_DIR_read(&d
, dir
))) {
777 if (strlen(dir
) + strlen(filename
) + 2 > sizeof buf
) {
778 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
,
779 SSL_R_PATH_TOO_LONG
);
782 #ifdef OPENSSL_SYS_VMS
783 r
= BIO_snprintf(buf
, sizeof buf
, "%s%s", dir
, filename
);
785 r
= BIO_snprintf(buf
, sizeof buf
, "%s/%s", dir
, filename
);
787 if (r
<= 0 || r
>= (int)sizeof(buf
))
789 if (!SSL_add_file_cert_subjects_to_stack(stack
, buf
))
794 SYSerr(SYS_F_OPENDIR
, get_last_sys_error());
795 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir
, "')");
796 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
, ERR_R_SYS_LIB
);
805 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR
);
809 /* Add a certificate to a BUF_MEM structure */
811 static int ssl_add_cert_to_buf(BUF_MEM
*buf
, unsigned long *l
, X509
*x
)
816 n
= i2d_X509(x
, NULL
);
817 if (!BUF_MEM_grow_clean(buf
, (int)(n
+ (*l
) + 3))) {
818 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF
, ERR_R_BUF_LIB
);
821 p
= (unsigned char *)&(buf
->data
[*l
]);
829 /* Add certificate chain to internal SSL BUF_MEM strcuture */
830 int ssl_add_cert_chain(SSL
*s
, CERT_PKEY
*cpk
, unsigned long *l
)
832 BUF_MEM
*buf
= s
->init_buf
;
836 STACK_OF(X509
) *extra_certs
;
837 X509_STORE
*chain_store
;
839 /* TLSv1 sends a chain with nothing in it, instead of an alert */
840 if (!BUF_MEM_grow_clean(buf
, 10)) {
841 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_BUF_LIB
);
845 if (!cpk
|| !cpk
->x509
)
851 * If we have a certificate specific chain use it, else use parent ctx.
854 extra_certs
= cpk
->chain
;
856 extra_certs
= s
->ctx
->extra_certs
;
858 if ((s
->mode
& SSL_MODE_NO_AUTO_CHAIN
) || extra_certs
)
860 else if (s
->cert
->chain_store
)
861 chain_store
= s
->cert
->chain_store
;
863 chain_store
= s
->ctx
->cert_store
;
866 X509_STORE_CTX xs_ctx
;
868 if (!X509_STORE_CTX_init(&xs_ctx
, chain_store
, x
, NULL
)) {
869 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_X509_LIB
);
873 * It is valid for the chain not to be complete (because normally we
874 * don't include the root cert in the chain). Therefore we deliberately
875 * ignore the error return from this call. We're not actually verifying
876 * the cert - we're just building as much of the chain as we can
878 X509_verify_cert(&xs_ctx
);
879 /* Don't leave errors in the queue */
881 i
= ssl_security_cert_chain(s
, xs_ctx
.chain
, NULL
, 0);
883 X509_STORE_CTX_cleanup(&xs_ctx
);
884 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
887 for (i
= 0; i
< sk_X509_num(xs_ctx
.chain
); i
++) {
888 x
= sk_X509_value(xs_ctx
.chain
, i
);
890 if (!ssl_add_cert_to_buf(buf
, l
, x
)) {
891 X509_STORE_CTX_cleanup(&xs_ctx
);
895 X509_STORE_CTX_cleanup(&xs_ctx
);
897 i
= ssl_security_cert_chain(s
, extra_certs
, x
, 0);
899 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
902 if (!ssl_add_cert_to_buf(buf
, l
, x
))
904 for (i
= 0; i
< sk_X509_num(extra_certs
); i
++) {
905 x
= sk_X509_value(extra_certs
, i
);
906 if (!ssl_add_cert_to_buf(buf
, l
, x
))
913 /* Build a certificate chain for current certificate */
914 int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
)
916 CERT
*c
= s
? s
->cert
: ctx
->cert
;
917 CERT_PKEY
*cpk
= c
->key
;
918 X509_STORE
*chain_store
= NULL
;
919 X509_STORE_CTX xs_ctx
;
920 STACK_OF(X509
) *chain
= NULL
, *untrusted
= NULL
;
926 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_NO_CERTIFICATE_SET
);
929 /* Rearranging and check the chain: add everything to a store */
930 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
) {
931 chain_store
= X509_STORE_new();
932 if (chain_store
== NULL
)
934 for (i
= 0; i
< sk_X509_num(cpk
->chain
); i
++) {
935 x
= sk_X509_value(cpk
->chain
, i
);
936 if (!X509_STORE_add_cert(chain_store
, x
)) {
937 error
= ERR_peek_last_error();
938 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
939 ERR_GET_REASON(error
) !=
940 X509_R_CERT_ALREADY_IN_HASH_TABLE
)
945 /* Add EE cert too: it might be self signed */
946 if (!X509_STORE_add_cert(chain_store
, cpk
->x509
)) {
947 error
= ERR_peek_last_error();
948 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
949 ERR_GET_REASON(error
) != X509_R_CERT_ALREADY_IN_HASH_TABLE
)
955 chain_store
= c
->chain_store
;
957 chain_store
= s
->ctx
->cert_store
;
959 chain_store
= ctx
->cert_store
;
961 if (flags
& SSL_BUILD_CHAIN_FLAG_UNTRUSTED
)
962 untrusted
= cpk
->chain
;
965 if (!X509_STORE_CTX_init(&xs_ctx
, chain_store
, cpk
->x509
, untrusted
)) {
966 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, ERR_R_X509_LIB
);
969 /* Set suite B flags if needed */
970 X509_STORE_CTX_set_flags(&xs_ctx
,
971 c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
);
973 i
= X509_verify_cert(&xs_ctx
);
974 if (i
<= 0 && flags
& SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR
) {
975 if (flags
& SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR
)
981 chain
= X509_STORE_CTX_get1_chain(&xs_ctx
);
983 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_CERTIFICATE_VERIFY_FAILED
);
984 i
= X509_STORE_CTX_get_error(&xs_ctx
);
985 ERR_add_error_data(2, "Verify error:",
986 X509_verify_cert_error_string(i
));
988 X509_STORE_CTX_cleanup(&xs_ctx
);
991 X509_STORE_CTX_cleanup(&xs_ctx
);
992 /* Remove EE certificate from chain */
993 x
= sk_X509_shift(chain
);
995 if (flags
& SSL_BUILD_CHAIN_FLAG_NO_ROOT
) {
996 if (sk_X509_num(chain
) > 0) {
997 /* See if last cert is self signed */
998 x
= sk_X509_value(chain
, sk_X509_num(chain
) - 1);
999 if (X509_get_extension_flags(x
) & EXFLAG_SS
) {
1000 x
= sk_X509_pop(chain
);
1006 * Check security level of all CA certificates: EE will have been checked
1009 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
1010 x
= sk_X509_value(chain
, i
);
1011 rv
= ssl_security_cert(s
, ctx
, x
, 0, 0);
1013 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, rv
);
1014 sk_X509_pop_free(chain
, X509_free
);
1019 sk_X509_pop_free(cpk
->chain
, X509_free
);
1024 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
)
1025 X509_STORE_free(chain_store
);
1030 int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
, int ref
)
1032 X509_STORE
**pstore
;
1034 pstore
= &c
->chain_store
;
1036 pstore
= &c
->verify_store
;
1037 X509_STORE_free(*pstore
);
1040 CRYPTO_add(&store
->references
, 1, CRYPTO_LOCK_X509_STORE
);
1044 static int ssl_security_default_callback(SSL
*s
, SSL_CTX
*ctx
, int op
,
1045 int bits
, int nid
, void *other
,
1049 static const int minbits_table
[5] = { 80, 112, 128, 192, 256 };
1051 level
= SSL_CTX_get_security_level(ctx
);
1053 level
= SSL_get_security_level(s
);
1054 /* Level 0: anything goes */
1059 minbits
= minbits_table
[level
- 1];
1061 case SSL_SECOP_CIPHER_SUPPORTED
:
1062 case SSL_SECOP_CIPHER_SHARED
:
1063 case SSL_SECOP_CIPHER_CHECK
:
1065 const SSL_CIPHER
*c
= other
;
1066 /* No ciphers below security level */
1069 /* No unauthenticated ciphersuites */
1070 if (c
->algorithm_auth
& SSL_aNULL
)
1072 /* No MD5 mac ciphersuites */
1073 if (c
->algorithm_mac
& SSL_MD5
)
1075 /* SHA1 HMAC is 160 bits of security */
1076 if (minbits
> 160 && c
->algorithm_mac
& SSL_SHA1
)
1078 /* Level 2: no RC4 */
1079 if (level
>= 2 && c
->algorithm_enc
== SSL_RC4
)
1081 /* Level 3: forward secure ciphersuites only */
1082 if (level
>= 3 && !(c
->algorithm_mkey
& (SSL_kEDH
| SSL_kEECDH
)))
1086 case SSL_SECOP_VERSION
:
1087 /* SSLv3 not allowed on level 2 */
1088 if (nid
<= SSL3_VERSION
&& level
>= 2)
1090 /* TLS v1.1 and above only for level 3 */
1091 if (nid
<= TLS1_VERSION
&& level
>= 3)
1093 /* TLS v1.2 only for level 4 and above */
1094 if (nid
<= TLS1_1_VERSION
&& level
>= 4)
1098 case SSL_SECOP_COMPRESSION
:
1102 case SSL_SECOP_TICKET
:
1113 int ssl_security(SSL
*s
, int op
, int bits
, int nid
, void *other
)
1115 return s
->cert
->sec_cb(s
, NULL
, op
, bits
, nid
, other
, s
->cert
->sec_ex
);
1118 int ssl_ctx_security(SSL_CTX
*ctx
, int op
, int bits
, int nid
, void *other
)
1120 return ctx
->cert
->sec_cb(NULL
, ctx
, op
, bits
, nid
, other
,