2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 * ECC cipher suite support in OpenSSL originally developed by
13 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
19 #ifndef NO_SYS_TYPES_H
20 # include <sys/types.h>
23 #include "internal/o_dir.h"
24 #include <openssl/lhash.h>
25 #include <openssl/bio.h>
26 #include <openssl/pem.h>
27 #include <openssl/x509v3.h>
28 #include <openssl/dh.h>
29 #include <openssl/bn.h>
30 #include <openssl/crypto.h>
32 #include "internal/thread_once.h"
34 static int ssl_security_default_callback(const SSL
*s
, const SSL_CTX
*ctx
,
35 int op
, int bits
, int nid
, void *other
,
38 static CRYPTO_ONCE ssl_x509_store_ctx_once
= CRYPTO_ONCE_STATIC_INIT
;
39 static volatile int ssl_x509_store_ctx_idx
= -1;
41 DEFINE_RUN_ONCE_STATIC(ssl_x509_store_ctx_init
)
43 ssl_x509_store_ctx_idx
= X509_STORE_CTX_get_ex_new_index(0,
44 "SSL for verify callback",
46 return ssl_x509_store_ctx_idx
>= 0;
49 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
52 if (!RUN_ONCE(&ssl_x509_store_ctx_once
, ssl_x509_store_ctx_init
))
54 return ssl_x509_store_ctx_idx
;
57 CERT
*ssl_cert_new(void)
59 CERT
*ret
= OPENSSL_zalloc(sizeof(*ret
));
62 SSLerr(SSL_F_SSL_CERT_NEW
, ERR_R_MALLOC_FAILURE
);
66 ret
->key
= &(ret
->pkeys
[SSL_PKEY_RSA_ENC
]);
68 ret
->sec_cb
= ssl_security_default_callback
;
69 ret
->sec_level
= OPENSSL_TLS_SECURITY_LEVEL
;
71 ret
->lock
= CRYPTO_THREAD_lock_new();
72 if (ret
->lock
== NULL
) {
73 SSLerr(SSL_F_SSL_CERT_NEW
, ERR_R_MALLOC_FAILURE
);
81 CERT
*ssl_cert_dup(CERT
*cert
)
83 CERT
*ret
= OPENSSL_zalloc(sizeof(*ret
));
87 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
92 ret
->key
= &ret
->pkeys
[cert
->key
- cert
->pkeys
];
93 ret
->lock
= CRYPTO_THREAD_lock_new();
94 if (ret
->lock
== NULL
) {
95 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
100 if (cert
->dh_tmp
!= NULL
) {
101 ret
->dh_tmp
= cert
->dh_tmp
;
102 EVP_PKEY_up_ref(ret
->dh_tmp
);
104 ret
->dh_tmp_cb
= cert
->dh_tmp_cb
;
105 ret
->dh_tmp_auto
= cert
->dh_tmp_auto
;
108 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
109 CERT_PKEY
*cpk
= cert
->pkeys
+ i
;
110 CERT_PKEY
*rpk
= ret
->pkeys
+ i
;
111 if (cpk
->x509
!= NULL
) {
112 rpk
->x509
= cpk
->x509
;
113 X509_up_ref(rpk
->x509
);
116 if (cpk
->privatekey
!= NULL
) {
117 rpk
->privatekey
= cpk
->privatekey
;
118 EVP_PKEY_up_ref(cpk
->privatekey
);
122 rpk
->chain
= X509_chain_up_ref(cpk
->chain
);
124 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
128 if (cert
->pkeys
[i
].serverinfo
!= NULL
) {
129 /* Just copy everything. */
130 ret
->pkeys
[i
].serverinfo
=
131 OPENSSL_malloc(cert
->pkeys
[i
].serverinfo_length
);
132 if (ret
->pkeys
[i
].serverinfo
== NULL
) {
133 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
136 ret
->pkeys
[i
].serverinfo_length
= cert
->pkeys
[i
].serverinfo_length
;
137 memcpy(ret
->pkeys
[i
].serverinfo
,
138 cert
->pkeys
[i
].serverinfo
, cert
->pkeys
[i
].serverinfo_length
);
142 /* Configured sigalgs copied across */
143 if (cert
->conf_sigalgs
) {
144 ret
->conf_sigalgs
= OPENSSL_malloc(cert
->conf_sigalgslen
);
145 if (ret
->conf_sigalgs
== NULL
)
147 memcpy(ret
->conf_sigalgs
, cert
->conf_sigalgs
, cert
->conf_sigalgslen
);
148 ret
->conf_sigalgslen
= cert
->conf_sigalgslen
;
150 ret
->conf_sigalgs
= NULL
;
152 if (cert
->client_sigalgs
) {
153 ret
->client_sigalgs
= OPENSSL_malloc(cert
->client_sigalgslen
);
154 if (ret
->client_sigalgs
== NULL
)
156 memcpy(ret
->client_sigalgs
, cert
->client_sigalgs
,
157 cert
->client_sigalgslen
);
158 ret
->client_sigalgslen
= cert
->client_sigalgslen
;
160 ret
->client_sigalgs
= NULL
;
161 /* Shared sigalgs also NULL */
162 ret
->shared_sigalgs
= NULL
;
163 /* Copy any custom client certificate types */
165 ret
->ctypes
= OPENSSL_malloc(cert
->ctype_num
);
166 if (ret
->ctypes
== NULL
)
168 memcpy(ret
->ctypes
, cert
->ctypes
, cert
->ctype_num
);
169 ret
->ctype_num
= cert
->ctype_num
;
172 ret
->cert_flags
= cert
->cert_flags
;
174 ret
->cert_cb
= cert
->cert_cb
;
175 ret
->cert_cb_arg
= cert
->cert_cb_arg
;
177 if (cert
->verify_store
) {
178 X509_STORE_up_ref(cert
->verify_store
);
179 ret
->verify_store
= cert
->verify_store
;
182 if (cert
->chain_store
) {
183 X509_STORE_up_ref(cert
->chain_store
);
184 ret
->chain_store
= cert
->chain_store
;
187 ret
->sec_cb
= cert
->sec_cb
;
188 ret
->sec_level
= cert
->sec_level
;
189 ret
->sec_ex
= cert
->sec_ex
;
191 if (!custom_exts_copy(&ret
->cli_ext
, &cert
->cli_ext
))
193 if (!custom_exts_copy(&ret
->srv_ext
, &cert
->srv_ext
))
195 #ifndef OPENSSL_NO_PSK
196 if (cert
->psk_identity_hint
) {
197 ret
->psk_identity_hint
= OPENSSL_strdup(cert
->psk_identity_hint
);
198 if (ret
->psk_identity_hint
== NULL
)
210 /* Free up and clear all certificates and chains */
212 void ssl_cert_clear_certs(CERT
*c
)
217 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
218 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
219 X509_free(cpk
->x509
);
221 EVP_PKEY_free(cpk
->privatekey
);
222 cpk
->privatekey
= NULL
;
223 sk_X509_pop_free(cpk
->chain
, X509_free
);
225 OPENSSL_free(cpk
->serverinfo
);
226 cpk
->serverinfo
= NULL
;
227 cpk
->serverinfo_length
= 0;
231 void ssl_cert_free(CERT
*c
)
238 CRYPTO_DOWN_REF(&c
->references
, &i
, c
->lock
);
239 REF_PRINT_COUNT("CERT", c
);
242 REF_ASSERT_ISNT(i
< 0);
244 #ifndef OPENSSL_NO_DH
245 EVP_PKEY_free(c
->dh_tmp
);
248 ssl_cert_clear_certs(c
);
249 OPENSSL_free(c
->conf_sigalgs
);
250 OPENSSL_free(c
->client_sigalgs
);
251 OPENSSL_free(c
->shared_sigalgs
);
252 OPENSSL_free(c
->ctypes
);
253 X509_STORE_free(c
->verify_store
);
254 X509_STORE_free(c
->chain_store
);
255 custom_exts_free(&c
->cli_ext
);
256 custom_exts_free(&c
->srv_ext
);
257 #ifndef OPENSSL_NO_PSK
258 OPENSSL_free(c
->psk_identity_hint
);
260 CRYPTO_THREAD_lock_free(c
->lock
);
264 int ssl_cert_set0_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
267 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
270 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
271 r
= ssl_security_cert(s
, ctx
, sk_X509_value(chain
, i
), 0, 0);
273 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN
, r
);
277 sk_X509_pop_free(cpk
->chain
, X509_free
);
282 int ssl_cert_set1_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
284 STACK_OF(X509
) *dchain
;
286 return ssl_cert_set0_chain(s
, ctx
, NULL
);
287 dchain
= X509_chain_up_ref(chain
);
290 if (!ssl_cert_set0_chain(s
, ctx
, dchain
)) {
291 sk_X509_pop_free(dchain
, X509_free
);
297 int ssl_cert_add0_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
300 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
303 r
= ssl_security_cert(s
, ctx
, x
, 0, 0);
305 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT
, r
);
309 cpk
->chain
= sk_X509_new_null();
310 if (!cpk
->chain
|| !sk_X509_push(cpk
->chain
, x
))
315 int ssl_cert_add1_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
317 if (!ssl_cert_add0_chain_cert(s
, ctx
, x
))
323 int ssl_cert_select_current(CERT
*c
, X509
*x
)
328 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
329 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
330 if (cpk
->x509
== x
&& cpk
->privatekey
) {
336 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
337 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
338 if (cpk
->privatekey
&& cpk
->x509
&& !X509_cmp(cpk
->x509
, x
)) {
346 int ssl_cert_set_current(CERT
*c
, long op
)
351 if (op
== SSL_CERT_SET_FIRST
)
353 else if (op
== SSL_CERT_SET_NEXT
) {
354 idx
= (int)(c
->key
- c
->pkeys
+ 1);
355 if (idx
>= SSL_PKEY_NUM
)
359 for (i
= idx
; i
< SSL_PKEY_NUM
; i
++) {
360 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
361 if (cpk
->x509
&& cpk
->privatekey
) {
369 void ssl_cert_set_cert_cb(CERT
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
372 c
->cert_cb_arg
= arg
;
375 int ssl_verify_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
)
379 X509_STORE
*verify_store
;
380 X509_STORE_CTX
*ctx
= NULL
;
381 X509_VERIFY_PARAM
*param
;
383 if ((sk
== NULL
) || (sk_X509_num(sk
) == 0))
386 if (s
->cert
->verify_store
)
387 verify_store
= s
->cert
->verify_store
;
389 verify_store
= s
->ctx
->cert_store
;
391 ctx
= X509_STORE_CTX_new();
393 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_MALLOC_FAILURE
);
397 x
= sk_X509_value(sk
, 0);
398 if (!X509_STORE_CTX_init(ctx
, verify_store
, x
, sk
)) {
399 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_X509_LIB
);
402 param
= X509_STORE_CTX_get0_param(ctx
);
404 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
405 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
406 * and PKI authentication.
408 X509_VERIFY_PARAM_set_auth_level(param
, SSL_get_security_level(s
));
410 /* Set suite B flags if needed */
411 X509_STORE_CTX_set_flags(ctx
, tls1_suiteb(s
));
412 if (!X509_STORE_CTX_set_ex_data
413 (ctx
, SSL_get_ex_data_X509_STORE_CTX_idx(), s
)) {
417 /* Verify via DANE if enabled */
418 if (DANETLS_ENABLED(&s
->dane
))
419 X509_STORE_CTX_set0_dane(ctx
, &s
->dane
);
422 * We need to inherit the verify parameters. These can be determined by
423 * the context: if its a server it will verify SSL client certificates or
427 X509_STORE_CTX_set_default(ctx
, s
->server
? "ssl_client" : "ssl_server");
429 * Anything non-default in "s->param" should overwrite anything in the ctx.
431 X509_VERIFY_PARAM_set1(param
, s
->param
);
433 if (s
->verify_callback
)
434 X509_STORE_CTX_set_verify_cb(ctx
, s
->verify_callback
);
436 if (s
->ctx
->app_verify_callback
!= NULL
)
437 i
= s
->ctx
->app_verify_callback(ctx
, s
->ctx
->app_verify_arg
);
439 i
= X509_verify_cert(ctx
);
441 s
->verify_result
= X509_STORE_CTX_get_error(ctx
);
442 sk_X509_pop_free(s
->verified_chain
, X509_free
);
443 s
->verified_chain
= NULL
;
444 if (X509_STORE_CTX_get0_chain(ctx
) != NULL
) {
445 s
->verified_chain
= X509_STORE_CTX_get1_chain(ctx
);
446 if (s
->verified_chain
== NULL
) {
447 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_MALLOC_FAILURE
);
452 /* Move peername from the store context params to the SSL handle's */
453 X509_VERIFY_PARAM_move_peername(s
->param
, param
);
456 X509_STORE_CTX_free(ctx
);
460 static void set_client_CA_list(STACK_OF(X509_NAME
) **ca_list
,
461 STACK_OF(X509_NAME
) *name_list
)
463 sk_X509_NAME_pop_free(*ca_list
, X509_NAME_free
);
464 *ca_list
= name_list
;
467 STACK_OF(X509_NAME
) *SSL_dup_CA_list(STACK_OF(X509_NAME
) *sk
)
470 STACK_OF(X509_NAME
) *ret
;
473 ret
= sk_X509_NAME_new_null();
475 SSLerr(SSL_F_SSL_DUP_CA_LIST
, ERR_R_MALLOC_FAILURE
);
478 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
479 name
= X509_NAME_dup(sk_X509_NAME_value(sk
, i
));
480 if (name
== NULL
|| !sk_X509_NAME_push(ret
, name
)) {
481 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
482 X509_NAME_free(name
);
489 void SSL_set_client_CA_list(SSL
*s
, STACK_OF(X509_NAME
) *name_list
)
491 set_client_CA_list(&(s
->client_CA
), name_list
);
494 void SSL_CTX_set_client_CA_list(SSL_CTX
*ctx
, STACK_OF(X509_NAME
) *name_list
)
496 set_client_CA_list(&(ctx
->client_CA
), name_list
);
499 STACK_OF(X509_NAME
) *SSL_CTX_get_client_CA_list(const SSL_CTX
*ctx
)
501 return (ctx
->client_CA
);
504 STACK_OF(X509_NAME
) *SSL_get_client_CA_list(const SSL
*s
)
506 if (!s
->server
) { /* we are in the client */
507 if (((s
->version
>> 8) == SSL3_VERSION_MAJOR
) && (s
->s3
!= NULL
))
508 return (s
->s3
->tmp
.ca_names
);
512 if (s
->client_CA
!= NULL
)
513 return (s
->client_CA
);
515 return (s
->ctx
->client_CA
);
519 static int add_client_CA(STACK_OF(X509_NAME
) **sk
, X509
*x
)
525 if ((*sk
== NULL
) && ((*sk
= sk_X509_NAME_new_null()) == NULL
))
528 if ((name
= X509_NAME_dup(X509_get_subject_name(x
))) == NULL
)
531 if (!sk_X509_NAME_push(*sk
, name
)) {
532 X509_NAME_free(name
);
538 int SSL_add_client_CA(SSL
*ssl
, X509
*x
)
540 return (add_client_CA(&(ssl
->client_CA
), x
));
543 int SSL_CTX_add_client_CA(SSL_CTX
*ctx
, X509
*x
)
545 return (add_client_CA(&(ctx
->client_CA
), x
));
548 static int xname_sk_cmp(const X509_NAME
*const *a
, const X509_NAME
*const *b
)
550 return (X509_NAME_cmp(*a
, *b
));
553 static int xname_cmp(const X509_NAME
*a
, const X509_NAME
*b
)
555 return X509_NAME_cmp(a
, b
);
558 static unsigned long xname_hash(const X509_NAME
*a
)
560 return X509_NAME_hash((X509_NAME
*)a
);
564 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
565 * it doesn't really have anything to do with clients (except that a common use
566 * for a stack of CAs is to send it to the client). Actually, it doesn't have
567 * much to do with CAs, either, since it will load any old cert.
568 * \param file the file containing one or more certs.
569 * \return a ::STACK containing the certs.
571 STACK_OF(X509_NAME
) *SSL_load_client_CA_file(const char *file
)
573 BIO
*in
= BIO_new(BIO_s_file());
575 X509_NAME
*xn
= NULL
;
576 STACK_OF(X509_NAME
) *ret
= NULL
;
577 LHASH_OF(X509_NAME
) *name_hash
= lh_X509_NAME_new(xname_hash
, xname_cmp
);
579 if ((name_hash
== NULL
) || (in
== NULL
)) {
580 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
584 if (!BIO_read_filename(in
, file
))
588 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
591 ret
= sk_X509_NAME_new_null();
593 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
597 if ((xn
= X509_get_subject_name(x
)) == NULL
)
599 /* check for duplicates */
600 xn
= X509_NAME_dup(xn
);
603 if (lh_X509_NAME_retrieve(name_hash
, xn
) != NULL
) {
608 lh_X509_NAME_insert(name_hash
, xn
);
609 if (!sk_X509_NAME_push(ret
, xn
))
617 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
622 lh_X509_NAME_free(name_hash
);
629 * Add a file of certs to a stack.
630 * \param stack the stack to add to.
631 * \param file the file to add from. All certs in this file that are not
632 * already in the stack will be added.
633 * \return 1 for success, 0 for failure. Note that in the case of failure some
634 * certs may have been added to \c stack.
637 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
642 X509_NAME
*xn
= NULL
;
644 int (*oldcmp
) (const X509_NAME
*const *a
, const X509_NAME
*const *b
);
646 oldcmp
= sk_X509_NAME_set_cmp_func(stack
, xname_sk_cmp
);
648 in
= BIO_new(BIO_s_file());
651 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK
, ERR_R_MALLOC_FAILURE
);
655 if (!BIO_read_filename(in
, file
))
659 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
661 if ((xn
= X509_get_subject_name(x
)) == NULL
)
663 xn
= X509_NAME_dup(xn
);
666 if (sk_X509_NAME_find(stack
, xn
) >= 0) {
669 } else if (!sk_X509_NAME_push(stack
, xn
)) {
683 (void)sk_X509_NAME_set_cmp_func(stack
, oldcmp
);
688 * Add a directory of certs to a stack.
689 * \param stack the stack to append to.
690 * \param dir the directory to append from. All files in this directory will be
691 * examined as potential certs. Any that are acceptable to
692 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
694 * \return 1 for success, 0 for failure. Note that in the case of failure some
695 * certs may have been added to \c stack.
698 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
701 OPENSSL_DIR_CTX
*d
= NULL
;
702 const char *filename
;
705 /* Note that a side effect is that the CAs will be sorted by name */
707 while ((filename
= OPENSSL_DIR_read(&d
, dir
))) {
711 if (strlen(dir
) + strlen(filename
) + 2 > sizeof buf
) {
712 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
,
713 SSL_R_PATH_TOO_LONG
);
716 #ifdef OPENSSL_SYS_VMS
717 r
= BIO_snprintf(buf
, sizeof buf
, "%s%s", dir
, filename
);
719 r
= BIO_snprintf(buf
, sizeof buf
, "%s/%s", dir
, filename
);
721 if (r
<= 0 || r
>= (int)sizeof(buf
))
723 if (!SSL_add_file_cert_subjects_to_stack(stack
, buf
))
728 SYSerr(SYS_F_OPENDIR
, get_last_sys_error());
729 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir
, "')");
730 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
, ERR_R_SYS_LIB
);
743 /* Add a certificate to the WPACKET */
744 static int ssl_add_cert_to_buf(WPACKET
*pkt
, X509
*x
)
747 unsigned char *outbytes
;
749 len
= i2d_X509(x
, NULL
);
751 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF
, ERR_R_BUF_LIB
);
754 if (!WPACKET_sub_allocate_bytes_u24(pkt
, len
, &outbytes
)
755 || i2d_X509(x
, &outbytes
) != len
) {
756 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF
, ERR_R_INTERNAL_ERROR
);
763 /* Add certificate chain to internal SSL BUF_MEM structure */
764 int ssl_add_cert_chain(SSL
*s
, WPACKET
*pkt
, CERT_PKEY
*cpk
)
768 STACK_OF(X509
) *extra_certs
;
769 STACK_OF(X509
) *chain
= NULL
;
770 X509_STORE
*chain_store
;
772 if (cpk
== NULL
|| cpk
->x509
== NULL
)
778 * If we have a certificate specific chain use it, else use parent ctx.
781 extra_certs
= cpk
->chain
;
783 extra_certs
= s
->ctx
->extra_certs
;
785 if ((s
->mode
& SSL_MODE_NO_AUTO_CHAIN
) || extra_certs
)
787 else if (s
->cert
->chain_store
)
788 chain_store
= s
->cert
->chain_store
;
790 chain_store
= s
->ctx
->cert_store
;
793 X509_STORE_CTX
*xs_ctx
= X509_STORE_CTX_new();
795 if (xs_ctx
== NULL
) {
796 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_MALLOC_FAILURE
);
799 if (!X509_STORE_CTX_init(xs_ctx
, chain_store
, x
, NULL
)) {
800 X509_STORE_CTX_free(xs_ctx
);
801 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, ERR_R_X509_LIB
);
805 * It is valid for the chain not to be complete (because normally we
806 * don't include the root cert in the chain). Therefore we deliberately
807 * ignore the error return from this call. We're not actually verifying
808 * the cert - we're just building as much of the chain as we can
810 (void)X509_verify_cert(xs_ctx
);
811 /* Don't leave errors in the queue */
813 chain
= X509_STORE_CTX_get0_chain(xs_ctx
);
814 i
= ssl_security_cert_chain(s
, chain
, NULL
, 0);
817 /* Dummy error calls so mkerr generates them */
818 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, SSL_R_EE_KEY_TOO_SMALL
);
819 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, SSL_R_CA_KEY_TOO_SMALL
);
820 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, SSL_R_CA_MD_TOO_WEAK
);
822 X509_STORE_CTX_free(xs_ctx
);
823 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
826 chain_count
= sk_X509_num(chain
);
827 for (i
= 0; i
< chain_count
; i
++) {
828 x
= sk_X509_value(chain
, i
);
830 if (!ssl_add_cert_to_buf(pkt
, x
)) {
831 X509_STORE_CTX_free(xs_ctx
);
835 X509_STORE_CTX_free(xs_ctx
);
837 i
= ssl_security_cert_chain(s
, extra_certs
, x
, 0);
839 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN
, i
);
842 if (!ssl_add_cert_to_buf(pkt
, x
))
844 for (i
= 0; i
< sk_X509_num(extra_certs
); i
++) {
845 x
= sk_X509_value(extra_certs
, i
);
846 if (!ssl_add_cert_to_buf(pkt
, x
))
853 /* Build a certificate chain for current certificate */
854 int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
)
856 CERT
*c
= s
? s
->cert
: ctx
->cert
;
857 CERT_PKEY
*cpk
= c
->key
;
858 X509_STORE
*chain_store
= NULL
;
859 X509_STORE_CTX
*xs_ctx
= NULL
;
860 STACK_OF(X509
) *chain
= NULL
, *untrusted
= NULL
;
866 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_NO_CERTIFICATE_SET
);
869 /* Rearranging and check the chain: add everything to a store */
870 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
) {
871 chain_store
= X509_STORE_new();
872 if (chain_store
== NULL
)
874 for (i
= 0; i
< sk_X509_num(cpk
->chain
); i
++) {
875 x
= sk_X509_value(cpk
->chain
, i
);
876 if (!X509_STORE_add_cert(chain_store
, x
)) {
877 error
= ERR_peek_last_error();
878 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
879 ERR_GET_REASON(error
) != X509_R_CERT_ALREADY_IN_HASH_TABLE
)
884 /* Add EE cert too: it might be self signed */
885 if (!X509_STORE_add_cert(chain_store
, cpk
->x509
)) {
886 error
= ERR_peek_last_error();
887 if (ERR_GET_LIB(error
) != ERR_LIB_X509
||
888 ERR_GET_REASON(error
) != X509_R_CERT_ALREADY_IN_HASH_TABLE
)
894 chain_store
= c
->chain_store
;
896 chain_store
= s
->ctx
->cert_store
;
898 chain_store
= ctx
->cert_store
;
900 if (flags
& SSL_BUILD_CHAIN_FLAG_UNTRUSTED
)
901 untrusted
= cpk
->chain
;
904 xs_ctx
= X509_STORE_CTX_new();
905 if (xs_ctx
== NULL
) {
906 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, ERR_R_MALLOC_FAILURE
);
909 if (!X509_STORE_CTX_init(xs_ctx
, chain_store
, cpk
->x509
, untrusted
)) {
910 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, ERR_R_X509_LIB
);
913 /* Set suite B flags if needed */
914 X509_STORE_CTX_set_flags(xs_ctx
,
915 c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
);
917 i
= X509_verify_cert(xs_ctx
);
918 if (i
<= 0 && flags
& SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR
) {
919 if (flags
& SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR
)
925 chain
= X509_STORE_CTX_get1_chain(xs_ctx
);
927 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_CERTIFICATE_VERIFY_FAILED
);
928 i
= X509_STORE_CTX_get_error(xs_ctx
);
929 ERR_add_error_data(2, "Verify error:",
930 X509_verify_cert_error_string(i
));
934 /* Remove EE certificate from chain */
935 x
= sk_X509_shift(chain
);
937 if (flags
& SSL_BUILD_CHAIN_FLAG_NO_ROOT
) {
938 if (sk_X509_num(chain
) > 0) {
939 /* See if last cert is self signed */
940 x
= sk_X509_value(chain
, sk_X509_num(chain
) - 1);
941 if (X509_get_extension_flags(x
) & EXFLAG_SS
) {
942 x
= sk_X509_pop(chain
);
948 * Check security level of all CA certificates: EE will have been checked
951 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
952 x
= sk_X509_value(chain
, i
);
953 rv
= ssl_security_cert(s
, ctx
, x
, 0, 0);
955 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, rv
);
956 sk_X509_pop_free(chain
, X509_free
);
961 sk_X509_pop_free(cpk
->chain
, X509_free
);
966 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
)
967 X509_STORE_free(chain_store
);
968 X509_STORE_CTX_free(xs_ctx
);
973 int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
, int ref
)
977 pstore
= &c
->chain_store
;
979 pstore
= &c
->verify_store
;
980 X509_STORE_free(*pstore
);
983 X509_STORE_up_ref(store
);
987 static int ssl_security_default_callback(const SSL
*s
, const SSL_CTX
*ctx
,
988 int op
, int bits
, int nid
, void *other
,
992 static const int minbits_table
[5] = { 80, 112, 128, 192, 256 };
994 level
= SSL_CTX_get_security_level(ctx
);
996 level
= SSL_get_security_level(s
);
1000 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
1003 if (op
== SSL_SECOP_TMP_DH
&& bits
< 80)
1009 minbits
= minbits_table
[level
- 1];
1011 case SSL_SECOP_CIPHER_SUPPORTED
:
1012 case SSL_SECOP_CIPHER_SHARED
:
1013 case SSL_SECOP_CIPHER_CHECK
:
1015 const SSL_CIPHER
*c
= other
;
1016 /* No ciphers below security level */
1019 /* No unauthenticated ciphersuites */
1020 if (c
->algorithm_auth
& SSL_aNULL
)
1022 /* No MD5 mac ciphersuites */
1023 if (c
->algorithm_mac
& SSL_MD5
)
1025 /* SHA1 HMAC is 160 bits of security */
1026 if (minbits
> 160 && c
->algorithm_mac
& SSL_SHA1
)
1028 /* Level 2: no RC4 */
1029 if (level
>= 2 && c
->algorithm_enc
== SSL_RC4
)
1031 /* Level 3: forward secure ciphersuites only */
1032 if (level
>= 3 && !(c
->algorithm_mkey
& (SSL_kEDH
| SSL_kEECDH
)))
1036 case SSL_SECOP_VERSION
:
1037 if (!SSL_IS_DTLS(s
)) {
1038 /* SSLv3 not allowed at level 2 */
1039 if (nid
<= SSL3_VERSION
&& level
>= 2)
1041 /* TLS v1.1 and above only for level 3 */
1042 if (nid
<= TLS1_VERSION
&& level
>= 3)
1044 /* TLS v1.2 only for level 4 and above */
1045 if (nid
<= TLS1_1_VERSION
&& level
>= 4)
1048 /* DTLS v1.2 only for level 4 and above */
1049 if (DTLS_VERSION_LT(nid
, DTLS1_2_VERSION
) && level
>= 4)
1054 case SSL_SECOP_COMPRESSION
:
1058 case SSL_SECOP_TICKET
:
1069 int ssl_security(const SSL
*s
, int op
, int bits
, int nid
, void *other
)
1071 return s
->cert
->sec_cb(s
, NULL
, op
, bits
, nid
, other
, s
->cert
->sec_ex
);
1074 int ssl_ctx_security(const SSL_CTX
*ctx
, int op
, int bits
, int nid
, void *other
)
1076 return ctx
->cert
->sec_cb(NULL
, ctx
, op
, bits
, nid
, other
,