1 /*! \file ssl/ssl_cert.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
120 #ifndef NO_SYS_TYPES_H
121 # include <sys/types.h>
125 #include <openssl/objects.h>
126 #include <openssl/bio.h>
127 #include <openssl/pem.h>
128 #include <openssl/x509v3.h>
129 #ifndef OPENSSL_NO_DH
130 #include <openssl/dh.h>
132 #include <openssl/bn.h>
133 #include "ssl_locl.h"
135 static int ssl_security_default_callback(SSL
*s
, SSL_CTX
*ctx
, int op
, int bits
, int nid
, void *other
, void *ex
);
137 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
139 static volatile int ssl_x509_store_ctx_idx
= -1;
140 int got_write_lock
= 0;
142 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX
);
144 if (ssl_x509_store_ctx_idx
< 0)
146 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX
);
147 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX
);
150 if (ssl_x509_store_ctx_idx
< 0)
152 ssl_x509_store_ctx_idx
=X509_STORE_CTX_get_ex_new_index(
153 0,"SSL for verify callback",NULL
,NULL
,NULL
);
158 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX
);
160 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX
);
162 return ssl_x509_store_ctx_idx
;
165 void ssl_cert_set_default_md(CERT
*cert
)
167 /* Set digest values to defaults */
168 #ifndef OPENSSL_NO_DSA
169 cert
->pkeys
[SSL_PKEY_DSA_SIGN
].digest
= EVP_sha1();
171 #ifndef OPENSSL_NO_RSA
172 cert
->pkeys
[SSL_PKEY_RSA_SIGN
].digest
= EVP_sha1();
173 cert
->pkeys
[SSL_PKEY_RSA_ENC
].digest
= EVP_sha1();
175 #ifndef OPENSSL_NO_ECDSA
176 cert
->pkeys
[SSL_PKEY_ECC
].digest
= EVP_sha1();
180 CERT
*ssl_cert_new(void)
184 ret
=(CERT
*)OPENSSL_malloc(sizeof(CERT
));
187 SSLerr(SSL_F_SSL_CERT_NEW
,ERR_R_MALLOC_FAILURE
);
190 memset(ret
,0,sizeof(CERT
));
192 ret
->key
= &(ret
->pkeys
[SSL_PKEY_RSA_ENC
]);
194 ssl_cert_set_default_md(ret
);
195 ret
->sec_cb
= ssl_security_default_callback
;
196 ret
->sec_level
= OPENSSL_TLS_SECURITY_LEVEL
;
201 CERT
*ssl_cert_dup(CERT
*cert
)
206 ret
= (CERT
*)OPENSSL_malloc(sizeof(CERT
));
209 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
213 memset(ret
, 0, sizeof(CERT
));
215 ret
->key
= &ret
->pkeys
[cert
->key
- &cert
->pkeys
[0]];
216 /* or ret->key = ret->pkeys + (cert->key - cert->pkeys),
217 * if you find that more readable */
219 ret
->valid
= cert
->valid
;
220 ret
->mask_k
= cert
->mask_k
;
221 ret
->mask_a
= cert
->mask_a
;
222 ret
->export_mask_k
= cert
->export_mask_k
;
223 ret
->export_mask_a
= cert
->export_mask_a
;
225 #ifndef OPENSSL_NO_RSA
226 if (cert
->rsa_tmp
!= NULL
)
228 RSA_up_ref(cert
->rsa_tmp
);
229 ret
->rsa_tmp
= cert
->rsa_tmp
;
231 ret
->rsa_tmp_cb
= cert
->rsa_tmp_cb
;
234 #ifndef OPENSSL_NO_DH
235 if (cert
->dh_tmp
!= NULL
)
237 ret
->dh_tmp
= DHparams_dup(cert
->dh_tmp
);
238 if (ret
->dh_tmp
== NULL
)
240 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_DH_LIB
);
243 if (cert
->dh_tmp
->priv_key
)
245 BIGNUM
*b
= BN_dup(cert
->dh_tmp
->priv_key
);
248 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_BN_LIB
);
251 ret
->dh_tmp
->priv_key
= b
;
253 if (cert
->dh_tmp
->pub_key
)
255 BIGNUM
*b
= BN_dup(cert
->dh_tmp
->pub_key
);
258 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_BN_LIB
);
261 ret
->dh_tmp
->pub_key
= b
;
264 ret
->dh_tmp_cb
= cert
->dh_tmp_cb
;
265 ret
->dh_tmp_auto
= cert
->dh_tmp_auto
;
268 #ifndef OPENSSL_NO_ECDH
271 ret
->ecdh_tmp
= EC_KEY_dup(cert
->ecdh_tmp
);
272 if (ret
->ecdh_tmp
== NULL
)
274 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_EC_LIB
);
278 ret
->ecdh_tmp_cb
= cert
->ecdh_tmp_cb
;
279 ret
->ecdh_tmp_auto
= cert
->ecdh_tmp_auto
;
282 for (i
= 0; i
< SSL_PKEY_NUM
; i
++)
284 CERT_PKEY
*cpk
= cert
->pkeys
+ i
;
285 CERT_PKEY
*rpk
= ret
->pkeys
+ i
;
286 if (cpk
->x509
!= NULL
)
288 rpk
->x509
= cpk
->x509
;
289 CRYPTO_add(&rpk
->x509
->references
, 1, CRYPTO_LOCK_X509
);
292 if (cpk
->privatekey
!= NULL
)
294 rpk
->privatekey
= cpk
->privatekey
;
295 CRYPTO_add(&cpk
->privatekey
->references
, 1,
296 CRYPTO_LOCK_EVP_PKEY
);
300 /* If there was anything special to do for
301 * certain types of keys, we'd do it here.
302 * (Nothing at the moment, I think.) */
304 case SSL_PKEY_RSA_ENC
:
305 case SSL_PKEY_RSA_SIGN
:
306 /* We have an RSA key. */
309 case SSL_PKEY_DSA_SIGN
:
310 /* We have a DSA key. */
313 case SSL_PKEY_DH_RSA
:
314 case SSL_PKEY_DH_DSA
:
315 /* We have a DH key. */
319 /* We have an ECC key */
324 SSLerr(SSL_F_SSL_CERT_DUP
, SSL_R_LIBRARY_BUG
);
330 rpk
->chain
= X509_chain_up_ref(cpk
->chain
);
333 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
337 rpk
->valid_flags
= 0;
338 #ifndef OPENSSL_NO_TLSEXT
339 if (cert
->pkeys
[i
].serverinfo
!= NULL
)
341 /* Just copy everything. */
342 ret
->pkeys
[i
].serverinfo
=
343 OPENSSL_malloc(cert
->pkeys
[i
].serverinfo_length
);
344 if (ret
->pkeys
[i
].serverinfo
== NULL
)
346 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
349 ret
->pkeys
[i
].serverinfo_length
=
350 cert
->pkeys
[i
].serverinfo_length
;
351 memcpy(ret
->pkeys
[i
].serverinfo
,
352 cert
->pkeys
[i
].serverinfo
,
353 cert
->pkeys
[i
].serverinfo_length
);
359 /* Set digests to defaults. NB: we don't copy existing values as they
360 * will be set during handshake.
362 ssl_cert_set_default_md(ret
);
363 /* Peer sigalgs set to NULL as we get these from handshake too */
364 ret
->peer_sigalgs
= NULL
;
365 ret
->peer_sigalgslen
= 0;
366 /* Configured sigalgs however we copy across */
368 if (cert
->conf_sigalgs
)
370 ret
->conf_sigalgs
= OPENSSL_malloc(cert
->conf_sigalgslen
);
371 if (!ret
->conf_sigalgs
)
373 memcpy(ret
->conf_sigalgs
, cert
->conf_sigalgs
,
374 cert
->conf_sigalgslen
);
375 ret
->conf_sigalgslen
= cert
->conf_sigalgslen
;
378 ret
->conf_sigalgs
= NULL
;
380 if (cert
->client_sigalgs
)
382 ret
->client_sigalgs
= OPENSSL_malloc(cert
->client_sigalgslen
);
383 if (!ret
->client_sigalgs
)
385 memcpy(ret
->client_sigalgs
, cert
->client_sigalgs
,
386 cert
->client_sigalgslen
);
387 ret
->client_sigalgslen
= cert
->client_sigalgslen
;
390 ret
->client_sigalgs
= NULL
;
391 /* Shared sigalgs also NULL */
392 ret
->shared_sigalgs
= NULL
;
393 /* Copy any custom client certificate types */
396 ret
->ctypes
= OPENSSL_malloc(cert
->ctype_num
);
399 memcpy(ret
->ctypes
, cert
->ctypes
, cert
->ctype_num
);
400 ret
->ctype_num
= cert
->ctype_num
;
403 ret
->cert_flags
= cert
->cert_flags
;
405 ret
->cert_cb
= cert
->cert_cb
;
406 ret
->cert_cb_arg
= cert
->cert_cb_arg
;
408 if (cert
->verify_store
)
410 CRYPTO_add(&cert
->verify_store
->references
, 1, CRYPTO_LOCK_X509_STORE
);
411 ret
->verify_store
= cert
->verify_store
;
414 if (cert
->chain_store
)
416 CRYPTO_add(&cert
->chain_store
->references
, 1, CRYPTO_LOCK_X509_STORE
);
417 ret
->chain_store
= cert
->chain_store
;
420 ret
->ciphers_raw
= NULL
;
422 ret
->sec_cb
= cert
->sec_cb
;
423 ret
->sec_level
= cert
->sec_level
;
424 ret
->sec_ex
= cert
->sec_ex
;
428 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH)
431 #ifndef OPENSSL_NO_RSA
432 if (ret
->rsa_tmp
!= NULL
)
433 RSA_free(ret
->rsa_tmp
);
435 #ifndef OPENSSL_NO_DH
436 if (ret
->dh_tmp
!= NULL
)
437 DH_free(ret
->dh_tmp
);
439 #ifndef OPENSSL_NO_ECDH
440 if (ret
->ecdh_tmp
!= NULL
)
441 EC_KEY_free(ret
->ecdh_tmp
);
444 ssl_cert_clear_certs(ret
);
449 /* Free up and clear all certificates and chains */
451 void ssl_cert_clear_certs(CERT
*c
)
456 for (i
= 0; i
<SSL_PKEY_NUM
; i
++)
458 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
461 X509_free(cpk
->x509
);
466 EVP_PKEY_free(cpk
->privatekey
);
467 cpk
->privatekey
= NULL
;
471 sk_X509_pop_free(cpk
->chain
, X509_free
);
474 #ifndef OPENSSL_NO_TLSEXT
477 OPENSSL_free(cpk
->serverinfo
);
478 cpk
->serverinfo
= NULL
;
479 cpk
->serverinfo_length
= 0;
482 /* Clear all flags apart from explicit sign */
483 cpk
->valid_flags
&= CERT_PKEY_EXPLICIT_SIGN
;
487 void ssl_cert_free(CERT
*c
)
494 i
=CRYPTO_add(&c
->references
,-1,CRYPTO_LOCK_SSL_CERT
);
502 fprintf(stderr
,"ssl_cert_free, bad reference count\n");
507 #ifndef OPENSSL_NO_RSA
508 if (c
->rsa_tmp
) RSA_free(c
->rsa_tmp
);
510 #ifndef OPENSSL_NO_DH
511 if (c
->dh_tmp
) DH_free(c
->dh_tmp
);
513 #ifndef OPENSSL_NO_ECDH
514 if (c
->ecdh_tmp
) EC_KEY_free(c
->ecdh_tmp
);
517 ssl_cert_clear_certs(c
);
519 OPENSSL_free(c
->peer_sigalgs
);
521 OPENSSL_free(c
->conf_sigalgs
);
522 if (c
->client_sigalgs
)
523 OPENSSL_free(c
->client_sigalgs
);
524 if (c
->shared_sigalgs
)
525 OPENSSL_free(c
->shared_sigalgs
);
527 OPENSSL_free(c
->ctypes
);
529 X509_STORE_free(c
->verify_store
);
531 X509_STORE_free(c
->chain_store
);
533 OPENSSL_free(c
->ciphers_raw
);
537 int ssl_cert_inst(CERT
**o
)
539 /* Create a CERT if there isn't already one
540 * (which cannot really happen, as it is initially created in
541 * SSL_CTX_new; but the earlier code usually allows for that one
542 * being non-existant, so we follow that behaviour, as it might
543 * turn out that there actually is a reason for it -- but I'm
544 * not sure that *all* of the existing code could cope with
545 * s->cert being NULL, otherwise we could do without the
546 * initialization in SSL_CTX_new).
551 SSLerr(SSL_F_SSL_CERT_INST
, ERR_R_PASSED_NULL_PARAMETER
);
556 if ((*o
= ssl_cert_new()) == NULL
)
558 SSLerr(SSL_F_SSL_CERT_INST
, ERR_R_MALLOC_FAILURE
);
565 int ssl_cert_set0_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
568 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
572 sk_X509_pop_free(cpk
->chain
, X509_free
);
573 for (i
= 0; i
< sk_X509_num(chain
); i
++)
575 r
= ssl_security_cert(s
, ctx
, sk_X509_value(chain
, i
), 0, 0);
578 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN
, r
);
586 int ssl_cert_set1_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
588 STACK_OF(X509
) *dchain
;
590 return ssl_cert_set0_chain(s
, ctx
, NULL
);
591 dchain
= X509_chain_up_ref(chain
);
594 if (!ssl_cert_set0_chain(s
, ctx
, dchain
))
596 sk_X509_pop_free(dchain
, X509_free
);
602 int ssl_cert_add0_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
605 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
608 r
= ssl_security_cert(s
, ctx
, x
, 0, 0);
611 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT
, r
);
615 cpk
->chain
= sk_X509_new_null();
616 if (!cpk
->chain
|| !sk_X509_push(cpk
->chain
, x
))
621 int ssl_cert_add1_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
623 if (!ssl_cert_add0_chain_cert(s
, ctx
, x
))
625 CRYPTO_add(&x
->references
, 1, CRYPTO_LOCK_X509
);
629 int ssl_cert_select_current(CERT
*c
, X509
*x
)
634 for (i
= 0; i
< SSL_PKEY_NUM
; i
++)
636 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
637 if (cpk
->x509
== x
&& cpk
->privatekey
)
644 for (i
= 0; i
< SSL_PKEY_NUM
; i
++)
646 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
647 if (cpk
->privatekey
&& cpk
->x509
&& !X509_cmp(cpk
->x509
, x
))
656 int ssl_cert_set_current(CERT
*c
, long op
)
661 if (op
== SSL_CERT_SET_FIRST
)
663 else if (op
== SSL_CERT_SET_NEXT
)
665 idx
= (int)(c
->key
- c
->pkeys
+ 1);
666 if (idx
>= SSL_PKEY_NUM
)
671 for (i
= idx
; i
< SSL_PKEY_NUM
; i
++)
673 CERT_PKEY
*cpk
= c
->key
+ i
;
674 if (cpk
->x509
&& cpk
->privatekey
)
683 void ssl_cert_set_cert_cb(CERT
*c
, int (*cb
)(SSL
*ssl
, void *arg
), void *arg
)
686 c
->cert_cb_arg
= arg
;
689 SESS_CERT
*ssl_sess_cert_new(void)
693 ret
= OPENSSL_malloc(sizeof *ret
);
696 SSLerr(SSL_F_SSL_SESS_CERT_NEW
, ERR_R_MALLOC_FAILURE
);
700 memset(ret
, 0 ,sizeof *ret
);
701 ret
->peer_key
= &(ret
->peer_pkeys
[SSL_PKEY_RSA_ENC
]);
707 void ssl_sess_cert_free(SESS_CERT
*sc
)
714 i
= CRYPTO_add(&sc
->references
, -1, CRYPTO_LOCK_SSL_SESS_CERT
);
716 REF_PRINT("SESS_CERT", sc
);
723 fprintf(stderr
,"ssl_sess_cert_free, bad reference count\n");
729 if (sc
->cert_chain
!= NULL
)
730 sk_X509_pop_free(sc
->cert_chain
, X509_free
);
731 for (i
= 0; i
< SSL_PKEY_NUM
; i
++)
733 if (sc
->peer_pkeys
[i
].x509
!= NULL
)
734 X509_free(sc
->peer_pkeys
[i
].x509
);
735 #if 0 /* We don't have the peer's private key. These lines are just
736 * here as a reminder that we're still using a not-quite-appropriate
738 if (sc
->peer_pkeys
[i
].privatekey
!= NULL
)
739 EVP_PKEY_free(sc
->peer_pkeys
[i
].privatekey
);
743 #ifndef OPENSSL_NO_RSA
744 if (sc
->peer_rsa_tmp
!= NULL
)
745 RSA_free(sc
->peer_rsa_tmp
);
747 #ifndef OPENSSL_NO_DH
748 if (sc
->peer_dh_tmp
!= NULL
)
749 DH_free(sc
->peer_dh_tmp
);
751 #ifndef OPENSSL_NO_ECDH
752 if (sc
->peer_ecdh_tmp
!= NULL
)
753 EC_KEY_free(sc
->peer_ecdh_tmp
);
759 int ssl_set_peer_cert_type(SESS_CERT
*sc
,int type
)
761 sc
->peer_cert_type
= type
;
765 int ssl_verify_cert_chain(SSL
*s
,STACK_OF(X509
) *sk
)
769 X509_STORE
*verify_store
;
772 if (s
->cert
->verify_store
)
773 verify_store
= s
->cert
->verify_store
;
775 verify_store
= s
->ctx
->cert_store
;
777 if ((sk
== NULL
) || (sk_X509_num(sk
) == 0))
780 x
=sk_X509_value(sk
,0);
781 if(!X509_STORE_CTX_init(&ctx
,verify_store
,x
,sk
))
783 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
,ERR_R_X509_LIB
);
786 /* Set suite B flags if needed */
787 X509_STORE_CTX_set_flags(&ctx
, tls1_suiteb(s
));
789 if (SSL_get_verify_depth(s
) >= 0)
790 X509_STORE_CTX_set_depth(&ctx
, SSL_get_verify_depth(s
));
792 X509_STORE_CTX_set_ex_data(&ctx
,SSL_get_ex_data_X509_STORE_CTX_idx(),s
);
794 /* We need to inherit the verify parameters. These can be determined by
795 * the context: if its a server it will verify SSL client certificates
799 X509_STORE_CTX_set_default(&ctx
,
800 s
->server
? "ssl_client" : "ssl_server");
801 /* Anything non-default in "param" should overwrite anything in the
804 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx
), s
->param
);
806 if (s
->verify_callback
)
807 X509_STORE_CTX_set_verify_cb(&ctx
, s
->verify_callback
);
809 if (s
->ctx
->app_verify_callback
!= NULL
)
810 #if 1 /* new with OpenSSL 0.9.7 */
811 i
=s
->ctx
->app_verify_callback(&ctx
, s
->ctx
->app_verify_arg
);
813 i
=s
->ctx
->app_verify_callback(&ctx
); /* should pass app_verify_arg */
817 #ifndef OPENSSL_NO_X509_VERIFY
818 i
=X509_verify_cert(&ctx
);
820 /* Dummy error calls so mkerr generates them */
821 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
,SSL_R_EE_KEY_TOO_SMALL
);
822 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
,SSL_R_CA_KEY_TOO_SMALL
);
823 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
,SSL_R_CA_MD_TOO_WEAK
);
826 i
= ssl_security_cert_chain(s
, ctx
.chain
, NULL
, 1);
829 ctx
.error
=X509_V_ERR_APPLICATION_VERIFICATION
;
830 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
,SSL_R_NO_VERIFY_CALLBACK
);
834 s
->verify_result
=ctx
.error
;
835 X509_STORE_CTX_cleanup(&ctx
);
840 static void set_client_CA_list(STACK_OF(X509_NAME
) **ca_list
,STACK_OF(X509_NAME
) *name_list
)
842 if (*ca_list
!= NULL
)
843 sk_X509_NAME_pop_free(*ca_list
,X509_NAME_free
);
848 STACK_OF(X509_NAME
) *SSL_dup_CA_list(STACK_OF(X509_NAME
) *sk
)
851 STACK_OF(X509_NAME
) *ret
;
854 ret
=sk_X509_NAME_new_null();
855 for (i
=0; i
<sk_X509_NAME_num(sk
); i
++)
857 name
=X509_NAME_dup(sk_X509_NAME_value(sk
,i
));
858 if ((name
== NULL
) || !sk_X509_NAME_push(ret
,name
))
860 sk_X509_NAME_pop_free(ret
,X509_NAME_free
);
867 void SSL_set_client_CA_list(SSL
*s
,STACK_OF(X509_NAME
) *name_list
)
869 set_client_CA_list(&(s
->client_CA
),name_list
);
872 void SSL_CTX_set_client_CA_list(SSL_CTX
*ctx
,STACK_OF(X509_NAME
) *name_list
)
874 set_client_CA_list(&(ctx
->client_CA
),name_list
);
877 STACK_OF(X509_NAME
) *SSL_CTX_get_client_CA_list(const SSL_CTX
*ctx
)
879 return(ctx
->client_CA
);
882 STACK_OF(X509_NAME
) *SSL_get_client_CA_list(const SSL
*s
)
884 if (s
->type
== SSL_ST_CONNECT
)
885 { /* we are in the client */
886 if (((s
->version
>>8) == SSL3_VERSION_MAJOR
) &&
888 return(s
->s3
->tmp
.ca_names
);
894 if (s
->client_CA
!= NULL
)
895 return(s
->client_CA
);
897 return(s
->ctx
->client_CA
);
901 static int add_client_CA(STACK_OF(X509_NAME
) **sk
,X509
*x
)
905 if (x
== NULL
) return(0);
906 if ((*sk
== NULL
) && ((*sk
=sk_X509_NAME_new_null()) == NULL
))
909 if ((name
=X509_NAME_dup(X509_get_subject_name(x
))) == NULL
)
912 if (!sk_X509_NAME_push(*sk
,name
))
914 X509_NAME_free(name
);
920 int SSL_add_client_CA(SSL
*ssl
,X509
*x
)
922 return(add_client_CA(&(ssl
->client_CA
),x
));
925 int SSL_CTX_add_client_CA(SSL_CTX
*ctx
,X509
*x
)
927 return(add_client_CA(&(ctx
->client_CA
),x
));
930 static int xname_cmp(const X509_NAME
* const *a
, const X509_NAME
* const *b
)
932 return(X509_NAME_cmp(*a
,*b
));
935 #ifndef OPENSSL_NO_STDIO
937 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
938 * it doesn't really have anything to do with clients (except that a common use
939 * for a stack of CAs is to send it to the client). Actually, it doesn't have
940 * much to do with CAs, either, since it will load any old cert.
941 * \param file the file containing one or more certs.
942 * \return a ::STACK containing the certs.
944 STACK_OF(X509_NAME
) *SSL_load_client_CA_file(const char *file
)
949 STACK_OF(X509_NAME
) *ret
= NULL
,*sk
;
951 sk
=sk_X509_NAME_new(xname_cmp
);
953 in
=BIO_new(BIO_s_file_internal());
955 if ((sk
== NULL
) || (in
== NULL
))
957 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
,ERR_R_MALLOC_FAILURE
);
961 if (!BIO_read_filename(in
,file
))
966 if (PEM_read_bio_X509(in
,&x
,NULL
,NULL
) == NULL
)
970 ret
= sk_X509_NAME_new_null();
973 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
,ERR_R_MALLOC_FAILURE
);
977 if ((xn
=X509_get_subject_name(x
)) == NULL
) goto err
;
978 /* check for duplicates */
979 xn
=X509_NAME_dup(xn
);
980 if (xn
== NULL
) goto err
;
981 if (sk_X509_NAME_find(sk
,xn
) >= 0)
985 sk_X509_NAME_push(sk
,xn
);
986 sk_X509_NAME_push(ret
,xn
);
993 if (ret
!= NULL
) sk_X509_NAME_pop_free(ret
,X509_NAME_free
);
996 if (sk
!= NULL
) sk_X509_NAME_free(sk
);
997 if (in
!= NULL
) BIO_free(in
);
998 if (x
!= NULL
) X509_free(x
);
1006 * Add a file of certs to a stack.
1007 * \param stack the stack to add to.
1008 * \param file the file to add from. All certs in this file that are not
1009 * already in the stack will be added.
1010 * \return 1 for success, 0 for failure. Note that in the case of failure some
1011 * certs may have been added to \c stack.
1014 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
1021 int (*oldcmp
)(const X509_NAME
* const *a
, const X509_NAME
* const *b
);
1023 oldcmp
=sk_X509_NAME_set_cmp_func(stack
,xname_cmp
);
1025 in
=BIO_new(BIO_s_file_internal());
1029 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK
,ERR_R_MALLOC_FAILURE
);
1033 if (!BIO_read_filename(in
,file
))
1038 if (PEM_read_bio_X509(in
,&x
,NULL
,NULL
) == NULL
)
1040 if ((xn
=X509_get_subject_name(x
)) == NULL
) goto err
;
1041 xn
=X509_NAME_dup(xn
);
1042 if (xn
== NULL
) goto err
;
1043 if (sk_X509_NAME_find(stack
,xn
) >= 0)
1046 sk_X509_NAME_push(stack
,xn
);
1061 (void)sk_X509_NAME_set_cmp_func(stack
,oldcmp
);
1067 * Add a directory of certs to a stack.
1068 * \param stack the stack to append to.
1069 * \param dir the directory to append from. All files in this directory will be
1070 * examined as potential certs. Any that are acceptable to
1071 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
1073 * \return 1 for success, 0 for failure. Note that in the case of failure some
1074 * certs may have been added to \c stack.
1077 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
1080 OPENSSL_DIR_CTX
*d
= NULL
;
1081 const char *filename
;
1084 CRYPTO_w_lock(CRYPTO_LOCK_READDIR
);
1086 /* Note that a side effect is that the CAs will be sorted by name */
1088 while((filename
= OPENSSL_DIR_read(&d
, dir
)))
1093 if(strlen(dir
)+strlen(filename
)+2 > sizeof buf
)
1095 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
,SSL_R_PATH_TOO_LONG
);
1099 #ifdef OPENSSL_SYS_VMS
1100 r
= BIO_snprintf(buf
,sizeof buf
,"%s%s",dir
,filename
);
1102 r
= BIO_snprintf(buf
,sizeof buf
,"%s/%s",dir
,filename
);
1104 if (r
<= 0 || r
>= (int)sizeof(buf
))
1106 if(!SSL_add_file_cert_subjects_to_stack(stack
,buf
))
1112 SYSerr(SYS_F_OPENDIR
, get_last_sys_error());
1113 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir
, "')");
1114 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
, ERR_R_SYS_LIB
);
1121 if (d
) OPENSSL_DIR_end(&d
);
1122 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR
);
1126 /* Add a certificate to a BUF_MEM structure */
1128 static int ssl_add_cert_to_buf(BUF_MEM
*buf
, unsigned long *l
, X509
*x
)
1134 if (!BUF_MEM_grow_clean(buf
,(int)(n
+(*l
)+3)))
1136 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF
,ERR_R_BUF_LIB
);
1139 p
=(unsigned char *)&(buf
->data
[*l
]);
1147 /* Add certificate chain to internal SSL BUF_MEM strcuture */
1148 int ssl_add_cert_chain(SSL
*s
, CERT_PKEY
*cpk
, unsigned long *l
)
1150 BUF_MEM
*buf
= s
->init_buf
;
1154 STACK_OF(X509
) *extra_certs
;
1155 X509_STORE
*chain_store
;
1157 /* TLSv1 sends a chain with nothing in it, instead of an alert */
1158 if (!BUF_MEM_grow_clean(buf
,10))
1160 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
,ERR_R_BUF_LIB
);
1164 if (!cpk
|| !cpk
->x509
)
1169 /* If we have a certificate specific chain use it, else use
1173 extra_certs
= cpk
->chain
;
1175 extra_certs
= s
->ctx
->extra_certs
;
1177 if ((s
->mode
& SSL_MODE_NO_AUTO_CHAIN
) || extra_certs
)
1179 else if (s
->cert
->chain_store
)
1180 chain_store
= s
->cert
->chain_store
;
1182 chain_store
= s
->ctx
->cert_store
;
1186 X509_STORE_CTX xs_ctx
;
1188 if (!X509_STORE_CTX_init(&xs_ctx
,chain_store
,x
,NULL
))
1190 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
,ERR_R_X509_LIB
);
1193 X509_verify_cert(&xs_ctx
);
1194 /* Don't leave errors in the queue */
1196 i
= ssl_security_cert_chain(s
, xs_ctx
.chain
, NULL
, 0);
1199 X509_STORE_CTX_cleanup(&xs_ctx
);
1200 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
1203 for (i
=0; i
< sk_X509_num(xs_ctx
.chain
); i
++)
1205 x
= sk_X509_value(xs_ctx
.chain
, i
);
1207 if (!ssl_add_cert_to_buf(buf
, l
, x
))
1209 X509_STORE_CTX_cleanup(&xs_ctx
);
1213 X509_STORE_CTX_cleanup(&xs_ctx
);
1217 i
= ssl_security_cert_chain(s
, extra_certs
, x
, 0);
1220 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
1223 if (!ssl_add_cert_to_buf(buf
, l
, x
))
1225 for (i
=0; i
<sk_X509_num(extra_certs
); i
++)
1227 x
=sk_X509_value(extra_certs
,i
);
1228 if (!ssl_add_cert_to_buf(buf
, l
, x
))
1235 /* Build a certificate chain for current certificate */
1236 int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
)
1238 CERT
*c
= s
? s
->cert
: ctx
->cert
;
1239 CERT_PKEY
*cpk
= c
->key
;
1240 X509_STORE
*chain_store
= NULL
;
1241 X509_STORE_CTX xs_ctx
;
1242 STACK_OF(X509
) *chain
= NULL
, *untrusted
= NULL
;
1245 unsigned long error
;
1249 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_NO_CERTIFICATE_SET
);
1252 /* Rearranging and check the chain: add everything to a store */
1253 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
)
1255 chain_store
= X509_STORE_new();
1258 for (i
= 0; i
< sk_X509_num(cpk
->chain
); i
++)
1260 x
= sk_X509_value(cpk
->chain
, i
);
1261 if (!X509_STORE_add_cert(chain_store
, x
))
1263 error
= ERR_peek_last_error();
1264 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
1265 ERR_GET_REASON(error
) != X509_R_CERT_ALREADY_IN_HASH_TABLE
)
1270 /* Add EE cert too: it might be self signed */
1271 if (!X509_STORE_add_cert(chain_store
, cpk
->x509
))
1273 error
= ERR_peek_last_error();
1274 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
1275 ERR_GET_REASON(error
) != X509_R_CERT_ALREADY_IN_HASH_TABLE
)
1283 chain_store
= c
->chain_store
;
1285 chain_store
= s
->ctx
->cert_store
;
1287 chain_store
= ctx
->cert_store
;
1289 if (flags
& SSL_BUILD_CHAIN_FLAG_UNTRUSTED
)
1290 untrusted
= cpk
->chain
;
1293 if (!X509_STORE_CTX_init(&xs_ctx
, chain_store
, cpk
->x509
, untrusted
))
1295 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, ERR_R_X509_LIB
);
1298 /* Set suite B flags if needed */
1299 X509_STORE_CTX_set_flags(&xs_ctx
, c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
);
1301 i
= X509_verify_cert(&xs_ctx
);
1302 if (i
<= 0 && flags
& SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR
)
1304 if (flags
& SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR
)
1310 chain
= X509_STORE_CTX_get1_chain(&xs_ctx
);
1313 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_CERTIFICATE_VERIFY_FAILED
);
1314 i
= X509_STORE_CTX_get_error(&xs_ctx
);
1315 ERR_add_error_data(2, "Verify error:",
1316 X509_verify_cert_error_string(i
));
1318 X509_STORE_CTX_cleanup(&xs_ctx
);
1321 X509_STORE_CTX_cleanup(&xs_ctx
);
1322 /* Remove EE certificate from chain */
1323 x
= sk_X509_shift(chain
);
1325 if (flags
& SSL_BUILD_CHAIN_FLAG_NO_ROOT
)
1327 if (sk_X509_num(chain
) > 0)
1329 /* See if last cert is self signed */
1330 x
= sk_X509_value(chain
, sk_X509_num(chain
) - 1);
1331 X509_check_purpose(x
, -1, 0);
1332 if (x
->ex_flags
& EXFLAG_SS
)
1334 x
= sk_X509_pop(chain
);
1339 /* Check security level of all CA certificates: EE will have been
1342 for (i
= 0; i
< sk_X509_num(chain
); i
++)
1344 x
= sk_X509_value(chain
, i
);
1345 rv
= ssl_security_cert(s
, ctx
, x
, 0, 0);
1348 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, rv
);
1349 sk_X509_pop_free(chain
, X509_free
);
1355 sk_X509_pop_free(cpk
->chain
, X509_free
);
1360 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
)
1361 X509_STORE_free(chain_store
);
1366 int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
, int ref
)
1368 X509_STORE
**pstore
;
1370 pstore
= &c
->chain_store
;
1372 pstore
= &c
->verify_store
;
1374 X509_STORE_free(*pstore
);
1377 CRYPTO_add(&store
->references
, 1, CRYPTO_LOCK_X509_STORE
);
1381 static int ssl_security_default_callback(SSL
*s
, SSL_CTX
*ctx
, int op
, int bits
, int nid
, void *other
, void *ex
)
1384 static const int minbits_table
[5] = {80, 112, 128, 192, 256};
1386 level
= SSL_CTX_get_security_level(ctx
);
1388 level
= SSL_get_security_level(s
);
1389 /* Level 0: anything goes */
1394 minbits
= minbits_table
[level
- 1];
1397 case SSL_SECOP_CIPHER_SUPPORTED
:
1398 case SSL_SECOP_CIPHER_SHARED
:
1399 case SSL_SECOP_CIPHER_CHECK
:
1401 const SSL_CIPHER
*c
= other
;
1402 /* No ciphers below security level */
1405 /* No SSLv2 ciphers */
1406 if ((SSL_CIPHER_get_id(c
) >> 24) == 0x2)
1408 /* No unauthenticated ciphersuites */
1409 if (c
->algorithm_auth
& SSL_aNULL
)
1411 /* No MD5 mac ciphersuites */
1412 if (c
->algorithm_mac
& SSL_MD5
)
1414 /* SHA1 HMAC is 160 bits of security */
1415 if (minbits
> 160 && c
->algorithm_mac
& SSL_SHA1
)
1417 /* Level 2: no RC4 */
1418 if (level
>= 2 && c
->algorithm_enc
== SSL_RC4
)
1420 /* Level 3: forward secure ciphersuites only */
1421 if (level
>= 3 && !(c
->algorithm_mkey
& (SSL_kEDH
|SSL_kEECDH
)))
1425 case SSL_SECOP_VERSION
:
1426 /* SSLv2 allowed only on level zero */
1427 if (nid
== SSL2_VERSION
)
1429 /* SSLv3 not allowed on level 2 */
1430 if (nid
<= SSL3_VERSION
&& level
>= 2)
1432 /* TLS v1.1 and above only for level 3 */
1433 if (nid
<= TLS1_VERSION
&& level
>= 3)
1435 /* TLS v1.2 only for level 4 and above */
1436 if (nid
<= TLS1_1_VERSION
&& level
>= 4)
1440 case SSL_SECOP_COMPRESSION
:
1444 case SSL_SECOP_TICKET
:
1448 case SSL_SECOP_SSL2_COMPAT
:
1449 /* SSLv2 compatible client hello only for level zero */
1458 int ssl_security(SSL
*s
, int op
, int bits
, int nid
, void *other
)
1460 return s
->cert
->sec_cb(s
, NULL
, op
, bits
, nid
, other
, s
->cert
->sec_ex
);
1463 int ssl_ctx_security(SSL_CTX
*ctx
, int op
, int bits
, int nid
, void *other
)
1465 return ctx
->cert
->sec_cb(NULL
, ctx
, op
, bits
, nid
, other
, ctx
->cert
->sec_ex
);