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 EVP_PKEY_up_ref(cpk
->privatekey
);
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
;
489 X509_VERIFY_PARAM
*param
;
491 if (s
->cert
->verify_store
)
492 verify_store
= s
->cert
->verify_store
;
494 verify_store
= s
->ctx
->cert_store
;
496 if ((sk
== NULL
) || (sk_X509_num(sk
) == 0))
499 x
= sk_X509_value(sk
, 0);
500 if (!X509_STORE_CTX_init(&ctx
, verify_store
, x
, sk
)) {
501 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_X509_LIB
);
504 param
= X509_STORE_CTX_get0_param(&ctx
);
506 /* Set suite B flags if needed */
507 X509_STORE_CTX_set_flags(&ctx
, tls1_suiteb(s
));
508 X509_STORE_CTX_set_ex_data(&ctx
, SSL_get_ex_data_X509_STORE_CTX_idx(), s
);
510 /* Verify via DANE if enabled */
511 if (DANETLS_ENABLED(&s
->dane
))
512 X509_STORE_CTX_set0_dane(&ctx
, &s
->dane
);
515 * We need to inherit the verify parameters. These can be determined by
516 * the context: if its a server it will verify SSL client certificates or
520 X509_STORE_CTX_set_default(&ctx
, s
->server
? "ssl_client" : "ssl_server");
522 * Anything non-default in "s->param" should overwrite anything in the ctx.
524 X509_VERIFY_PARAM_set1(param
, s
->param
);
526 if (s
->verify_callback
)
527 X509_STORE_CTX_set_verify_cb(&ctx
, s
->verify_callback
);
529 if (s
->ctx
->app_verify_callback
!= NULL
)
530 i
= s
->ctx
->app_verify_callback(&ctx
, s
->ctx
->app_verify_arg
);
532 i
= X509_verify_cert(&ctx
);
534 /* Dummy error calls so mkerr generates them */
535 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_EE_KEY_TOO_SMALL
);
536 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_CA_KEY_TOO_SMALL
);
537 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, SSL_R_CA_MD_TOO_WEAK
);
540 i
= ssl_security_cert_chain(s
, ctx
.chain
, NULL
, 1);
543 s
->verify_result
= ctx
.error
;
545 /* Move peername from the store context params to the SSL handle's */
546 X509_VERIFY_PARAM_move_peername(s
->param
, param
);
548 X509_STORE_CTX_cleanup(&ctx
);
553 static void set_client_CA_list(STACK_OF(X509_NAME
) **ca_list
,
554 STACK_OF(X509_NAME
) *name_list
)
556 sk_X509_NAME_pop_free(*ca_list
, X509_NAME_free
);
557 *ca_list
= name_list
;
560 STACK_OF(X509_NAME
) *SSL_dup_CA_list(STACK_OF(X509_NAME
) *sk
)
563 STACK_OF(X509_NAME
) *ret
;
566 ret
= sk_X509_NAME_new_null();
567 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
568 name
= X509_NAME_dup(sk_X509_NAME_value(sk
, i
));
569 if ((name
== NULL
) || !sk_X509_NAME_push(ret
, name
)) {
570 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
577 void SSL_set_client_CA_list(SSL
*s
, STACK_OF(X509_NAME
) *name_list
)
579 set_client_CA_list(&(s
->client_CA
), name_list
);
582 void SSL_CTX_set_client_CA_list(SSL_CTX
*ctx
, STACK_OF(X509_NAME
) *name_list
)
584 set_client_CA_list(&(ctx
->client_CA
), name_list
);
587 STACK_OF(X509_NAME
) *SSL_CTX_get_client_CA_list(const SSL_CTX
*ctx
)
589 return (ctx
->client_CA
);
592 STACK_OF(X509_NAME
) *SSL_get_client_CA_list(const SSL
*s
)
594 if (!s
->server
) { /* we are in the client */
595 if (((s
->version
>> 8) == SSL3_VERSION_MAJOR
) && (s
->s3
!= NULL
))
596 return (s
->s3
->tmp
.ca_names
);
600 if (s
->client_CA
!= NULL
)
601 return (s
->client_CA
);
603 return (s
->ctx
->client_CA
);
607 static int add_client_CA(STACK_OF(X509_NAME
) **sk
, X509
*x
)
613 if ((*sk
== NULL
) && ((*sk
= sk_X509_NAME_new_null()) == NULL
))
616 if ((name
= X509_NAME_dup(X509_get_subject_name(x
))) == NULL
)
619 if (!sk_X509_NAME_push(*sk
, name
)) {
620 X509_NAME_free(name
);
626 int SSL_add_client_CA(SSL
*ssl
, X509
*x
)
628 return (add_client_CA(&(ssl
->client_CA
), x
));
631 int SSL_CTX_add_client_CA(SSL_CTX
*ctx
, X509
*x
)
633 return (add_client_CA(&(ctx
->client_CA
), x
));
636 static int xname_cmp(const X509_NAME
*const *a
, const X509_NAME
*const *b
)
638 return (X509_NAME_cmp(*a
, *b
));
642 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
643 * it doesn't really have anything to do with clients (except that a common use
644 * for a stack of CAs is to send it to the client). Actually, it doesn't have
645 * much to do with CAs, either, since it will load any old cert.
646 * \param file the file containing one or more certs.
647 * \return a ::STACK containing the certs.
649 STACK_OF(X509_NAME
) *SSL_load_client_CA_file(const char *file
)
653 X509_NAME
*xn
= NULL
;
654 STACK_OF(X509_NAME
) *ret
= NULL
, *sk
;
656 sk
= sk_X509_NAME_new(xname_cmp
);
658 in
= BIO_new(BIO_s_file());
660 if ((sk
== NULL
) || (in
== NULL
)) {
661 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
665 if (!BIO_read_filename(in
, file
))
669 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
672 ret
= sk_X509_NAME_new_null();
674 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
678 if ((xn
= X509_get_subject_name(x
)) == NULL
)
680 /* check for duplicates */
681 xn
= X509_NAME_dup(xn
);
684 if (sk_X509_NAME_find(sk
, xn
) >= 0)
687 sk_X509_NAME_push(sk
, xn
);
688 sk_X509_NAME_push(ret
, xn
);
694 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
697 sk_X509_NAME_free(sk
);
706 * Add a file of certs to a stack.
707 * \param stack the stack to add to.
708 * \param file the file to add from. All certs in this file that are not
709 * already in the stack will be added.
710 * \return 1 for success, 0 for failure. Note that in the case of failure some
711 * certs may have been added to \c stack.
714 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
719 X509_NAME
*xn
= NULL
;
721 int (*oldcmp
) (const X509_NAME
*const *a
, const X509_NAME
*const *b
);
723 oldcmp
= sk_X509_NAME_set_cmp_func(stack
, xname_cmp
);
725 in
= BIO_new(BIO_s_file());
728 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK
,
729 ERR_R_MALLOC_FAILURE
);
733 if (!BIO_read_filename(in
, file
))
737 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
739 if ((xn
= X509_get_subject_name(x
)) == NULL
)
741 xn
= X509_NAME_dup(xn
);
744 if (sk_X509_NAME_find(stack
, xn
) >= 0)
747 sk_X509_NAME_push(stack
, xn
);
758 (void)sk_X509_NAME_set_cmp_func(stack
, oldcmp
);
763 * Add a directory of certs to a stack.
764 * \param stack the stack to append to.
765 * \param dir the directory to append from. All files in this directory will be
766 * examined as potential certs. Any that are acceptable to
767 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
769 * \return 1 for success, 0 for failure. Note that in the case of failure some
770 * certs may have been added to \c stack.
773 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
776 OPENSSL_DIR_CTX
*d
= NULL
;
777 const char *filename
;
780 CRYPTO_w_lock(CRYPTO_LOCK_READDIR
);
782 /* Note that a side effect is that the CAs will be sorted by name */
784 while ((filename
= OPENSSL_DIR_read(&d
, dir
))) {
788 if (strlen(dir
) + strlen(filename
) + 2 > sizeof buf
) {
789 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
,
790 SSL_R_PATH_TOO_LONG
);
793 #ifdef OPENSSL_SYS_VMS
794 r
= BIO_snprintf(buf
, sizeof buf
, "%s%s", dir
, filename
);
796 r
= BIO_snprintf(buf
, sizeof buf
, "%s/%s", dir
, filename
);
798 if (r
<= 0 || r
>= (int)sizeof(buf
))
800 if (!SSL_add_file_cert_subjects_to_stack(stack
, buf
))
805 SYSerr(SYS_F_OPENDIR
, get_last_sys_error());
806 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir
, "')");
807 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
, ERR_R_SYS_LIB
);
816 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR
);
820 /* Add a certificate to a BUF_MEM structure */
822 static int ssl_add_cert_to_buf(BUF_MEM
*buf
, unsigned long *l
, X509
*x
)
827 n
= i2d_X509(x
, NULL
);
828 if (!BUF_MEM_grow_clean(buf
, (int)(n
+ (*l
) + 3))) {
829 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF
, ERR_R_BUF_LIB
);
832 p
= (unsigned char *)&(buf
->data
[*l
]);
840 /* Add certificate chain to internal SSL BUF_MEM strcuture */
841 int ssl_add_cert_chain(SSL
*s
, CERT_PKEY
*cpk
, unsigned long *l
)
843 BUF_MEM
*buf
= s
->init_buf
;
847 STACK_OF(X509
) *extra_certs
;
848 X509_STORE
*chain_store
;
850 /* TLSv1 sends a chain with nothing in it, instead of an alert */
851 if (!BUF_MEM_grow_clean(buf
, 10)) {
852 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_BUF_LIB
);
856 if (!cpk
|| !cpk
->x509
)
862 * If we have a certificate specific chain use it, else use parent ctx.
865 extra_certs
= cpk
->chain
;
867 extra_certs
= s
->ctx
->extra_certs
;
869 if ((s
->mode
& SSL_MODE_NO_AUTO_CHAIN
) || extra_certs
)
871 else if (s
->cert
->chain_store
)
872 chain_store
= s
->cert
->chain_store
;
874 chain_store
= s
->ctx
->cert_store
;
877 X509_STORE_CTX xs_ctx
;
879 if (!X509_STORE_CTX_init(&xs_ctx
, chain_store
, x
, NULL
)) {
880 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_X509_LIB
);
884 * It is valid for the chain not to be complete (because normally we
885 * don't include the root cert in the chain). Therefore we deliberately
886 * ignore the error return from this call. We're not actually verifying
887 * the cert - we're just building as much of the chain as we can
889 X509_verify_cert(&xs_ctx
);
890 /* Don't leave errors in the queue */
892 i
= ssl_security_cert_chain(s
, xs_ctx
.chain
, NULL
, 0);
894 X509_STORE_CTX_cleanup(&xs_ctx
);
895 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
898 for (i
= 0; i
< sk_X509_num(xs_ctx
.chain
); i
++) {
899 x
= sk_X509_value(xs_ctx
.chain
, i
);
901 if (!ssl_add_cert_to_buf(buf
, l
, x
)) {
902 X509_STORE_CTX_cleanup(&xs_ctx
);
906 X509_STORE_CTX_cleanup(&xs_ctx
);
908 i
= ssl_security_cert_chain(s
, extra_certs
, x
, 0);
910 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
913 if (!ssl_add_cert_to_buf(buf
, l
, x
))
915 for (i
= 0; i
< sk_X509_num(extra_certs
); i
++) {
916 x
= sk_X509_value(extra_certs
, i
);
917 if (!ssl_add_cert_to_buf(buf
, l
, x
))
924 /* Build a certificate chain for current certificate */
925 int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
)
927 CERT
*c
= s
? s
->cert
: ctx
->cert
;
928 CERT_PKEY
*cpk
= c
->key
;
929 X509_STORE
*chain_store
= NULL
;
930 X509_STORE_CTX xs_ctx
;
931 STACK_OF(X509
) *chain
= NULL
, *untrusted
= NULL
;
937 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_NO_CERTIFICATE_SET
);
940 /* Rearranging and check the chain: add everything to a store */
941 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
) {
942 chain_store
= X509_STORE_new();
943 if (chain_store
== NULL
)
945 for (i
= 0; i
< sk_X509_num(cpk
->chain
); i
++) {
946 x
= sk_X509_value(cpk
->chain
, i
);
947 if (!X509_STORE_add_cert(chain_store
, x
)) {
948 error
= ERR_peek_last_error();
949 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
950 ERR_GET_REASON(error
) !=
951 X509_R_CERT_ALREADY_IN_HASH_TABLE
)
956 /* Add EE cert too: it might be self signed */
957 if (!X509_STORE_add_cert(chain_store
, cpk
->x509
)) {
958 error
= ERR_peek_last_error();
959 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
960 ERR_GET_REASON(error
) != X509_R_CERT_ALREADY_IN_HASH_TABLE
)
966 chain_store
= c
->chain_store
;
968 chain_store
= s
->ctx
->cert_store
;
970 chain_store
= ctx
->cert_store
;
972 if (flags
& SSL_BUILD_CHAIN_FLAG_UNTRUSTED
)
973 untrusted
= cpk
->chain
;
976 if (!X509_STORE_CTX_init(&xs_ctx
, chain_store
, cpk
->x509
, untrusted
)) {
977 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, ERR_R_X509_LIB
);
980 /* Set suite B flags if needed */
981 X509_STORE_CTX_set_flags(&xs_ctx
,
982 c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
);
984 i
= X509_verify_cert(&xs_ctx
);
985 if (i
<= 0 && flags
& SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR
) {
986 if (flags
& SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR
)
992 chain
= X509_STORE_CTX_get1_chain(&xs_ctx
);
994 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_CERTIFICATE_VERIFY_FAILED
);
995 i
= X509_STORE_CTX_get_error(&xs_ctx
);
996 ERR_add_error_data(2, "Verify error:",
997 X509_verify_cert_error_string(i
));
999 X509_STORE_CTX_cleanup(&xs_ctx
);
1002 X509_STORE_CTX_cleanup(&xs_ctx
);
1003 /* Remove EE certificate from chain */
1004 x
= sk_X509_shift(chain
);
1006 if (flags
& SSL_BUILD_CHAIN_FLAG_NO_ROOT
) {
1007 if (sk_X509_num(chain
) > 0) {
1008 /* See if last cert is self signed */
1009 x
= sk_X509_value(chain
, sk_X509_num(chain
) - 1);
1010 if (X509_get_extension_flags(x
) & EXFLAG_SS
) {
1011 x
= sk_X509_pop(chain
);
1017 * Check security level of all CA certificates: EE will have been checked
1020 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
1021 x
= sk_X509_value(chain
, i
);
1022 rv
= ssl_security_cert(s
, ctx
, x
, 0, 0);
1024 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, rv
);
1025 sk_X509_pop_free(chain
, X509_free
);
1030 sk_X509_pop_free(cpk
->chain
, X509_free
);
1035 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
)
1036 X509_STORE_free(chain_store
);
1041 int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
, int ref
)
1043 X509_STORE
**pstore
;
1045 pstore
= &c
->chain_store
;
1047 pstore
= &c
->verify_store
;
1048 X509_STORE_free(*pstore
);
1051 CRYPTO_add(&store
->references
, 1, CRYPTO_LOCK_X509_STORE
);
1055 static int ssl_security_default_callback(SSL
*s
, SSL_CTX
*ctx
, int op
,
1056 int bits
, int nid
, void *other
,
1060 static const int minbits_table
[5] = { 80, 112, 128, 192, 256 };
1062 level
= SSL_CTX_get_security_level(ctx
);
1064 level
= SSL_get_security_level(s
);
1068 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
1071 if (op
== SSL_SECOP_TMP_DH
&& bits
< 80)
1077 minbits
= minbits_table
[level
- 1];
1079 case SSL_SECOP_CIPHER_SUPPORTED
:
1080 case SSL_SECOP_CIPHER_SHARED
:
1081 case SSL_SECOP_CIPHER_CHECK
:
1083 const SSL_CIPHER
*c
= other
;
1084 /* No ciphers below security level */
1087 /* No unauthenticated ciphersuites */
1088 if (c
->algorithm_auth
& SSL_aNULL
)
1090 /* No MD5 mac ciphersuites */
1091 if (c
->algorithm_mac
& SSL_MD5
)
1093 /* SHA1 HMAC is 160 bits of security */
1094 if (minbits
> 160 && c
->algorithm_mac
& SSL_SHA1
)
1096 /* Level 2: no RC4 */
1097 if (level
>= 2 && c
->algorithm_enc
== SSL_RC4
)
1099 /* Level 3: forward secure ciphersuites only */
1100 if (level
>= 3 && !(c
->algorithm_mkey
& (SSL_kEDH
| SSL_kEECDH
)))
1104 case SSL_SECOP_VERSION
:
1105 if (!SSL_IS_DTLS(s
)) {
1106 /* SSLv3 not allowed at 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)
1116 /* DTLS v1.2 only for level 4 and above */
1117 if (DTLS_VERSION_LT(nid
, DTLS1_2_VERSION
) && level
>= 4)
1122 case SSL_SECOP_COMPRESSION
:
1126 case SSL_SECOP_TICKET
:
1137 int ssl_security(SSL
*s
, int op
, int bits
, int nid
, void *other
)
1139 return s
->cert
->sec_cb(s
, NULL
, op
, bits
, nid
, other
, s
->cert
->sec_ex
);
1142 int ssl_ctx_security(SSL_CTX
*ctx
, int op
, int bits
, int nid
, void *other
)
1144 return ctx
->cert
->sec_cb(NULL
, ctx
, op
, bits
, nid
, other
,