2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
5 * Licensed under the OpenSSL license (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
12 #include <sys/types.h>
14 #include "internal/nelem.h"
15 #include "internal/o_dir.h"
16 #include <openssl/bio.h>
17 #include <openssl/pem.h>
18 #include <openssl/x509v3.h>
19 #include <openssl/dh.h>
20 #include <openssl/bn.h>
21 #include <openssl/crypto.h>
22 #include "internal/refcount.h"
24 #include "ssl_cert_table.h"
25 #include "internal/thread_once.h"
27 static int ssl_security_default_callback(const SSL
*s
, const SSL_CTX
*ctx
,
28 int op
, int bits
, int nid
, void *other
,
31 static CRYPTO_ONCE ssl_x509_store_ctx_once
= CRYPTO_ONCE_STATIC_INIT
;
32 static volatile int ssl_x509_store_ctx_idx
= -1;
34 DEFINE_RUN_ONCE_STATIC(ssl_x509_store_ctx_init
)
36 ssl_x509_store_ctx_idx
= X509_STORE_CTX_get_ex_new_index(0,
37 "SSL for verify callback",
39 return ssl_x509_store_ctx_idx
>= 0;
42 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
45 if (!RUN_ONCE(&ssl_x509_store_ctx_once
, ssl_x509_store_ctx_init
))
47 return ssl_x509_store_ctx_idx
;
50 CERT
*ssl_cert_new(void)
52 CERT
*ret
= OPENSSL_zalloc(sizeof(*ret
));
55 SSLerr(SSL_F_SSL_CERT_NEW
, ERR_R_MALLOC_FAILURE
);
59 ret
->key
= &(ret
->pkeys
[SSL_PKEY_RSA
]);
61 ret
->sec_cb
= ssl_security_default_callback
;
62 ret
->sec_level
= OPENSSL_TLS_SECURITY_LEVEL
;
64 ret
->lock
= CRYPTO_THREAD_lock_new();
65 if (ret
->lock
== NULL
) {
66 SSLerr(SSL_F_SSL_CERT_NEW
, ERR_R_MALLOC_FAILURE
);
74 CERT
*ssl_cert_dup(CERT
*cert
)
76 CERT
*ret
= OPENSSL_zalloc(sizeof(*ret
));
80 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
85 ret
->key
= &ret
->pkeys
[cert
->key
- cert
->pkeys
];
86 ret
->lock
= CRYPTO_THREAD_lock_new();
87 if (ret
->lock
== NULL
) {
88 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
93 if (cert
->dh_tmp
!= NULL
) {
94 ret
->dh_tmp
= cert
->dh_tmp
;
95 EVP_PKEY_up_ref(ret
->dh_tmp
);
97 ret
->dh_tmp_cb
= cert
->dh_tmp_cb
;
98 ret
->dh_tmp_auto
= cert
->dh_tmp_auto
;
101 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
102 CERT_PKEY
*cpk
= cert
->pkeys
+ i
;
103 CERT_PKEY
*rpk
= ret
->pkeys
+ i
;
104 if (cpk
->x509
!= NULL
) {
105 rpk
->x509
= cpk
->x509
;
106 X509_up_ref(rpk
->x509
);
109 if (cpk
->privatekey
!= NULL
) {
110 rpk
->privatekey
= cpk
->privatekey
;
111 EVP_PKEY_up_ref(cpk
->privatekey
);
115 rpk
->chain
= X509_chain_up_ref(cpk
->chain
);
117 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
121 if (cert
->pkeys
[i
].serverinfo
!= NULL
) {
122 /* Just copy everything. */
123 ret
->pkeys
[i
].serverinfo
=
124 OPENSSL_malloc(cert
->pkeys
[i
].serverinfo_length
);
125 if (ret
->pkeys
[i
].serverinfo
== NULL
) {
126 SSLerr(SSL_F_SSL_CERT_DUP
, ERR_R_MALLOC_FAILURE
);
129 ret
->pkeys
[i
].serverinfo_length
= cert
->pkeys
[i
].serverinfo_length
;
130 memcpy(ret
->pkeys
[i
].serverinfo
,
131 cert
->pkeys
[i
].serverinfo
, cert
->pkeys
[i
].serverinfo_length
);
135 /* Configured sigalgs copied across */
136 if (cert
->conf_sigalgs
) {
137 ret
->conf_sigalgs
= OPENSSL_malloc(cert
->conf_sigalgslen
138 * sizeof(*cert
->conf_sigalgs
));
139 if (ret
->conf_sigalgs
== NULL
)
141 memcpy(ret
->conf_sigalgs
, cert
->conf_sigalgs
,
142 cert
->conf_sigalgslen
* sizeof(*cert
->conf_sigalgs
));
143 ret
->conf_sigalgslen
= cert
->conf_sigalgslen
;
145 ret
->conf_sigalgs
= NULL
;
147 if (cert
->client_sigalgs
) {
148 ret
->client_sigalgs
= OPENSSL_malloc(cert
->client_sigalgslen
149 * sizeof(*cert
->client_sigalgs
));
150 if (ret
->client_sigalgs
== NULL
)
152 memcpy(ret
->client_sigalgs
, cert
->client_sigalgs
,
153 cert
->client_sigalgslen
* sizeof(*cert
->client_sigalgs
));
154 ret
->client_sigalgslen
= cert
->client_sigalgslen
;
156 ret
->client_sigalgs
= NULL
;
157 /* Shared sigalgs also NULL */
158 ret
->shared_sigalgs
= NULL
;
159 /* Copy any custom client certificate types */
161 ret
->ctype
= OPENSSL_memdup(cert
->ctype
, cert
->ctype_len
);
162 if (ret
->ctype
== NULL
)
164 ret
->ctype_len
= cert
->ctype_len
;
167 ret
->cert_flags
= cert
->cert_flags
;
169 ret
->cert_cb
= cert
->cert_cb
;
170 ret
->cert_cb_arg
= cert
->cert_cb_arg
;
172 if (cert
->verify_store
) {
173 X509_STORE_up_ref(cert
->verify_store
);
174 ret
->verify_store
= cert
->verify_store
;
177 if (cert
->chain_store
) {
178 X509_STORE_up_ref(cert
->chain_store
);
179 ret
->chain_store
= cert
->chain_store
;
182 ret
->sec_cb
= cert
->sec_cb
;
183 ret
->sec_level
= cert
->sec_level
;
184 ret
->sec_ex
= cert
->sec_ex
;
186 if (!custom_exts_copy(&ret
->custext
, &cert
->custext
))
188 #ifndef OPENSSL_NO_PSK
189 if (cert
->psk_identity_hint
) {
190 ret
->psk_identity_hint
= OPENSSL_strdup(cert
->psk_identity_hint
);
191 if (ret
->psk_identity_hint
== NULL
)
203 /* Free up and clear all certificates and chains */
205 void ssl_cert_clear_certs(CERT
*c
)
210 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
211 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
212 X509_free(cpk
->x509
);
214 EVP_PKEY_free(cpk
->privatekey
);
215 cpk
->privatekey
= NULL
;
216 sk_X509_pop_free(cpk
->chain
, X509_free
);
218 OPENSSL_free(cpk
->serverinfo
);
219 cpk
->serverinfo
= NULL
;
220 cpk
->serverinfo_length
= 0;
224 void ssl_cert_free(CERT
*c
)
230 CRYPTO_DOWN_REF(&c
->references
, &i
, c
->lock
);
231 REF_PRINT_COUNT("CERT", c
);
234 REF_ASSERT_ISNT(i
< 0);
236 #ifndef OPENSSL_NO_DH
237 EVP_PKEY_free(c
->dh_tmp
);
240 ssl_cert_clear_certs(c
);
241 OPENSSL_free(c
->conf_sigalgs
);
242 OPENSSL_free(c
->client_sigalgs
);
243 OPENSSL_free(c
->shared_sigalgs
);
244 OPENSSL_free(c
->ctype
);
245 X509_STORE_free(c
->verify_store
);
246 X509_STORE_free(c
->chain_store
);
247 custom_exts_free(&c
->custext
);
248 #ifndef OPENSSL_NO_PSK
249 OPENSSL_free(c
->psk_identity_hint
);
251 CRYPTO_THREAD_lock_free(c
->lock
);
255 int ssl_cert_set0_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
258 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
261 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
262 r
= ssl_security_cert(s
, ctx
, sk_X509_value(chain
, i
), 0, 0);
264 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN
, r
);
268 sk_X509_pop_free(cpk
->chain
, X509_free
);
273 int ssl_cert_set1_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
)
275 STACK_OF(X509
) *dchain
;
277 return ssl_cert_set0_chain(s
, ctx
, NULL
);
278 dchain
= X509_chain_up_ref(chain
);
281 if (!ssl_cert_set0_chain(s
, ctx
, dchain
)) {
282 sk_X509_pop_free(dchain
, X509_free
);
288 int ssl_cert_add0_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
291 CERT_PKEY
*cpk
= s
? s
->cert
->key
: ctx
->cert
->key
;
294 r
= ssl_security_cert(s
, ctx
, x
, 0, 0);
296 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT
, r
);
300 cpk
->chain
= sk_X509_new_null();
301 if (!cpk
->chain
|| !sk_X509_push(cpk
->chain
, x
))
306 int ssl_cert_add1_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
)
308 if (!ssl_cert_add0_chain_cert(s
, ctx
, x
))
314 int ssl_cert_select_current(CERT
*c
, X509
*x
)
319 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
320 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
321 if (cpk
->x509
== x
&& cpk
->privatekey
) {
327 for (i
= 0; i
< SSL_PKEY_NUM
; i
++) {
328 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
329 if (cpk
->privatekey
&& cpk
->x509
&& !X509_cmp(cpk
->x509
, x
)) {
337 int ssl_cert_set_current(CERT
*c
, long op
)
342 if (op
== SSL_CERT_SET_FIRST
)
344 else if (op
== SSL_CERT_SET_NEXT
) {
345 idx
= (int)(c
->key
- c
->pkeys
+ 1);
346 if (idx
>= SSL_PKEY_NUM
)
350 for (i
= idx
; i
< SSL_PKEY_NUM
; i
++) {
351 CERT_PKEY
*cpk
= c
->pkeys
+ i
;
352 if (cpk
->x509
&& cpk
->privatekey
) {
360 void ssl_cert_set_cert_cb(CERT
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
363 c
->cert_cb_arg
= arg
;
366 int ssl_verify_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
)
370 X509_STORE
*verify_store
;
371 X509_STORE_CTX
*ctx
= NULL
;
372 X509_VERIFY_PARAM
*param
;
374 if ((sk
== NULL
) || (sk_X509_num(sk
) == 0))
377 if (s
->cert
->verify_store
)
378 verify_store
= s
->cert
->verify_store
;
380 verify_store
= s
->ctx
->cert_store
;
382 ctx
= X509_STORE_CTX_new();
384 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_MALLOC_FAILURE
);
388 x
= sk_X509_value(sk
, 0);
389 if (!X509_STORE_CTX_init(ctx
, verify_store
, x
, sk
)) {
390 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_X509_LIB
);
393 param
= X509_STORE_CTX_get0_param(ctx
);
395 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
396 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
397 * and PKI authentication.
399 X509_VERIFY_PARAM_set_auth_level(param
, SSL_get_security_level(s
));
401 /* Set suite B flags if needed */
402 X509_STORE_CTX_set_flags(ctx
, tls1_suiteb(s
));
403 if (!X509_STORE_CTX_set_ex_data
404 (ctx
, SSL_get_ex_data_X509_STORE_CTX_idx(), s
)) {
408 /* Verify via DANE if enabled */
409 if (DANETLS_ENABLED(&s
->dane
))
410 X509_STORE_CTX_set0_dane(ctx
, &s
->dane
);
413 * We need to inherit the verify parameters. These can be determined by
414 * the context: if its a server it will verify SSL client certificates or
418 X509_STORE_CTX_set_default(ctx
, s
->server
? "ssl_client" : "ssl_server");
420 * Anything non-default in "s->param" should overwrite anything in the ctx.
422 X509_VERIFY_PARAM_set1(param
, s
->param
);
424 if (s
->verify_callback
)
425 X509_STORE_CTX_set_verify_cb(ctx
, s
->verify_callback
);
427 if (s
->ctx
->app_verify_callback
!= NULL
)
428 i
= s
->ctx
->app_verify_callback(ctx
, s
->ctx
->app_verify_arg
);
430 i
= X509_verify_cert(ctx
);
432 s
->verify_result
= X509_STORE_CTX_get_error(ctx
);
433 sk_X509_pop_free(s
->verified_chain
, X509_free
);
434 s
->verified_chain
= NULL
;
435 if (X509_STORE_CTX_get0_chain(ctx
) != NULL
) {
436 s
->verified_chain
= X509_STORE_CTX_get1_chain(ctx
);
437 if (s
->verified_chain
== NULL
) {
438 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN
, ERR_R_MALLOC_FAILURE
);
443 /* Move peername from the store context params to the SSL handle's */
444 X509_VERIFY_PARAM_move_peername(s
->param
, param
);
447 X509_STORE_CTX_free(ctx
);
451 static void set0_CA_list(STACK_OF(X509_NAME
) **ca_list
,
452 STACK_OF(X509_NAME
) *name_list
)
454 sk_X509_NAME_pop_free(*ca_list
, X509_NAME_free
);
455 *ca_list
= name_list
;
458 STACK_OF(X509_NAME
) *SSL_dup_CA_list(const STACK_OF(X509_NAME
) *sk
)
461 const int num
= sk_X509_NAME_num(sk
);
462 STACK_OF(X509_NAME
) *ret
;
465 ret
= sk_X509_NAME_new_reserve(NULL
, num
);
467 SSLerr(SSL_F_SSL_DUP_CA_LIST
, ERR_R_MALLOC_FAILURE
);
470 for (i
= 0; i
< num
; i
++) {
471 name
= X509_NAME_dup(sk_X509_NAME_value(sk
, i
));
473 SSLerr(SSL_F_SSL_DUP_CA_LIST
, ERR_R_MALLOC_FAILURE
);
474 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
477 sk_X509_NAME_push(ret
, name
); /* Cannot fail after reserve call */
482 void SSL_set0_CA_list(SSL
*s
, STACK_OF(X509_NAME
) *name_list
)
484 set0_CA_list(&s
->ca_names
, name_list
);
487 void SSL_CTX_set0_CA_list(SSL_CTX
*ctx
, STACK_OF(X509_NAME
) *name_list
)
489 set0_CA_list(&ctx
->ca_names
, name_list
);
492 const STACK_OF(X509_NAME
) *SSL_CTX_get0_CA_list(const SSL_CTX
*ctx
)
494 return ctx
->ca_names
;
497 const STACK_OF(X509_NAME
) *SSL_get0_CA_list(const SSL
*s
)
499 return s
->ca_names
!= NULL
? s
->ca_names
: s
->ctx
->ca_names
;
502 void SSL_CTX_set_client_CA_list(SSL_CTX
*ctx
, STACK_OF(X509_NAME
) *name_list
)
504 SSL_CTX_set0_CA_list(ctx
, name_list
);
507 STACK_OF(X509_NAME
) *SSL_CTX_get_client_CA_list(const SSL_CTX
*ctx
)
509 return ctx
->ca_names
;
512 void SSL_set_client_CA_list(SSL
*s
, STACK_OF(X509_NAME
) *name_list
)
514 SSL_set0_CA_list(s
, name_list
);
517 const STACK_OF(X509_NAME
) *SSL_get0_peer_CA_list(const SSL
*s
)
519 return s
->s3
!= NULL
? s
->s3
->tmp
.peer_ca_names
: NULL
;
522 STACK_OF(X509_NAME
) *SSL_get_client_CA_list(const SSL
*s
)
525 return s
->s3
!= NULL
? s
->s3
->tmp
.peer_ca_names
: NULL
;
526 return s
->ca_names
!= NULL
? s
->ca_names
: s
->ctx
->ca_names
;
529 static int add_ca_name(STACK_OF(X509_NAME
) **sk
, const X509
*x
)
535 if (*sk
== NULL
&& ((*sk
= sk_X509_NAME_new_null()) == NULL
))
538 if ((name
= X509_NAME_dup(X509_get_subject_name(x
))) == NULL
)
541 if (!sk_X509_NAME_push(*sk
, name
)) {
542 X509_NAME_free(name
);
548 int SSL_add1_CA_list(SSL
*ssl
, const X509
*x
)
550 return add_ca_name(&ssl
->ca_names
, x
);
553 int SSL_CTX_add1_CA_list(SSL_CTX
*ctx
, const X509
*x
)
555 return add_ca_name(&ctx
->ca_names
, x
);
558 int SSL_add_client_CA(SSL
*ssl
, X509
*x
)
560 return add_ca_name(&ssl
->ca_names
, x
);
563 int SSL_CTX_add_client_CA(SSL_CTX
*ctx
, X509
*x
)
565 return add_ca_name(&ctx
->ca_names
, x
);
568 static int xname_cmp(const X509_NAME
*a
, const X509_NAME
*b
)
570 unsigned char *abuf
= NULL
, *bbuf
= NULL
;
573 /* X509_NAME_cmp() itself casts away constness in this way, so
576 alen
= i2d_X509_NAME((X509_NAME
*)a
, &abuf
);
577 blen
= i2d_X509_NAME((X509_NAME
*)b
, &bbuf
);
579 if (alen
< 0 || blen
< 0)
581 else if (alen
!= blen
)
583 else /* alen == blen */
584 ret
= memcmp(abuf
, bbuf
, alen
);
592 static int xname_sk_cmp(const X509_NAME
*const *a
, const X509_NAME
*const *b
)
594 return xname_cmp(*a
, *b
);
597 static unsigned long xname_hash(const X509_NAME
*a
)
599 return X509_NAME_hash((X509_NAME
*)a
);
603 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
604 * it doesn't really have anything to do with clients (except that a common use
605 * for a stack of CAs is to send it to the client). Actually, it doesn't have
606 * much to do with CAs, either, since it will load any old cert.
607 * \param file the file containing one or more certs.
608 * \return a ::STACK containing the certs.
610 STACK_OF(X509_NAME
) *SSL_load_client_CA_file(const char *file
)
612 BIO
*in
= BIO_new(BIO_s_file());
614 X509_NAME
*xn
= NULL
;
615 STACK_OF(X509_NAME
) *ret
= NULL
;
616 LHASH_OF(X509_NAME
) *name_hash
= lh_X509_NAME_new(xname_hash
, xname_cmp
);
618 if ((name_hash
== NULL
) || (in
== NULL
)) {
619 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
623 if (!BIO_read_filename(in
, file
))
627 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
630 ret
= sk_X509_NAME_new_null();
632 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE
, ERR_R_MALLOC_FAILURE
);
636 if ((xn
= X509_get_subject_name(x
)) == NULL
)
638 /* check for duplicates */
639 xn
= X509_NAME_dup(xn
);
642 if (lh_X509_NAME_retrieve(name_hash
, xn
) != NULL
) {
647 lh_X509_NAME_insert(name_hash
, xn
);
648 if (!sk_X509_NAME_push(ret
, xn
))
656 sk_X509_NAME_pop_free(ret
, X509_NAME_free
);
661 lh_X509_NAME_free(name_hash
);
668 * Add a file of certs to a stack.
669 * \param stack the stack to add to.
670 * \param file the file to add from. All certs in this file that are not
671 * already in the stack will be added.
672 * \return 1 for success, 0 for failure. Note that in the case of failure some
673 * certs may have been added to \c stack.
676 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
681 X509_NAME
*xn
= NULL
;
683 int (*oldcmp
) (const X509_NAME
*const *a
, const X509_NAME
*const *b
);
685 oldcmp
= sk_X509_NAME_set_cmp_func(stack
, xname_sk_cmp
);
687 in
= BIO_new(BIO_s_file());
690 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK
, ERR_R_MALLOC_FAILURE
);
694 if (!BIO_read_filename(in
, file
))
698 if (PEM_read_bio_X509(in
, &x
, NULL
, NULL
) == NULL
)
700 if ((xn
= X509_get_subject_name(x
)) == NULL
)
702 xn
= X509_NAME_dup(xn
);
705 if (sk_X509_NAME_find(stack
, xn
) >= 0) {
708 } else if (!sk_X509_NAME_push(stack
, xn
)) {
722 (void)sk_X509_NAME_set_cmp_func(stack
, oldcmp
);
727 * Add a directory of certs to a stack.
728 * \param stack the stack to append to.
729 * \param dir the directory to append from. All files in this directory will be
730 * examined as potential certs. Any that are acceptable to
731 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
733 * \return 1 for success, 0 for failure. Note that in the case of failure some
734 * certs may have been added to \c stack.
737 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME
) *stack
,
740 OPENSSL_DIR_CTX
*d
= NULL
;
741 const char *filename
;
744 /* Note that a side effect is that the CAs will be sorted by name */
746 while ((filename
= OPENSSL_DIR_read(&d
, dir
))) {
750 if (strlen(dir
) + strlen(filename
) + 2 > sizeof(buf
)) {
751 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
,
752 SSL_R_PATH_TOO_LONG
);
755 #ifdef OPENSSL_SYS_VMS
756 r
= BIO_snprintf(buf
, sizeof(buf
), "%s%s", dir
, filename
);
758 r
= BIO_snprintf(buf
, sizeof(buf
), "%s/%s", dir
, filename
);
760 if (r
<= 0 || r
>= (int)sizeof(buf
))
762 if (!SSL_add_file_cert_subjects_to_stack(stack
, buf
))
767 SYSerr(SYS_F_OPENDIR
, get_last_sys_error());
768 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir
, "')");
769 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK
, ERR_R_SYS_LIB
);
782 /* Build a certificate chain for current certificate */
783 int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
)
785 CERT
*c
= s
? s
->cert
: ctx
->cert
;
786 CERT_PKEY
*cpk
= c
->key
;
787 X509_STORE
*chain_store
= NULL
;
788 X509_STORE_CTX
*xs_ctx
= NULL
;
789 STACK_OF(X509
) *chain
= NULL
, *untrusted
= NULL
;
794 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_NO_CERTIFICATE_SET
);
797 /* Rearranging and check the chain: add everything to a store */
798 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
) {
799 chain_store
= X509_STORE_new();
800 if (chain_store
== NULL
)
802 for (i
= 0; i
< sk_X509_num(cpk
->chain
); i
++) {
803 x
= sk_X509_value(cpk
->chain
, i
);
804 if (!X509_STORE_add_cert(chain_store
, x
))
807 /* Add EE cert too: it might be self signed */
808 if (!X509_STORE_add_cert(chain_store
, cpk
->x509
))
812 chain_store
= c
->chain_store
;
814 chain_store
= s
->ctx
->cert_store
;
816 chain_store
= ctx
->cert_store
;
818 if (flags
& SSL_BUILD_CHAIN_FLAG_UNTRUSTED
)
819 untrusted
= cpk
->chain
;
822 xs_ctx
= X509_STORE_CTX_new();
823 if (xs_ctx
== NULL
) {
824 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, ERR_R_MALLOC_FAILURE
);
827 if (!X509_STORE_CTX_init(xs_ctx
, chain_store
, cpk
->x509
, untrusted
)) {
828 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, ERR_R_X509_LIB
);
831 /* Set suite B flags if needed */
832 X509_STORE_CTX_set_flags(xs_ctx
,
833 c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
);
835 i
= X509_verify_cert(xs_ctx
);
836 if (i
<= 0 && flags
& SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR
) {
837 if (flags
& SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR
)
843 chain
= X509_STORE_CTX_get1_chain(xs_ctx
);
845 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, SSL_R_CERTIFICATE_VERIFY_FAILED
);
846 i
= X509_STORE_CTX_get_error(xs_ctx
);
847 ERR_add_error_data(2, "Verify error:",
848 X509_verify_cert_error_string(i
));
852 /* Remove EE certificate from chain */
853 x
= sk_X509_shift(chain
);
855 if (flags
& SSL_BUILD_CHAIN_FLAG_NO_ROOT
) {
856 if (sk_X509_num(chain
) > 0) {
857 /* See if last cert is self signed */
858 x
= sk_X509_value(chain
, sk_X509_num(chain
) - 1);
859 if (X509_get_extension_flags(x
) & EXFLAG_SS
) {
860 x
= sk_X509_pop(chain
);
866 * Check security level of all CA certificates: EE will have been checked
869 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
870 x
= sk_X509_value(chain
, i
);
871 rv
= ssl_security_cert(s
, ctx
, x
, 0, 0);
873 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN
, rv
);
874 sk_X509_pop_free(chain
, X509_free
);
879 sk_X509_pop_free(cpk
->chain
, X509_free
);
884 if (flags
& SSL_BUILD_CHAIN_FLAG_CHECK
)
885 X509_STORE_free(chain_store
);
886 X509_STORE_CTX_free(xs_ctx
);
891 int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
, int ref
)
895 pstore
= &c
->chain_store
;
897 pstore
= &c
->verify_store
;
898 X509_STORE_free(*pstore
);
901 X509_STORE_up_ref(store
);
905 static int ssl_security_default_callback(const SSL
*s
, const SSL_CTX
*ctx
,
906 int op
, int bits
, int nid
, void *other
,
910 static const int minbits_table
[5] = { 80, 112, 128, 192, 256 };
912 level
= SSL_CTX_get_security_level(ctx
);
914 level
= SSL_get_security_level(s
);
918 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
921 if (op
== SSL_SECOP_TMP_DH
&& bits
< 80)
927 minbits
= minbits_table
[level
- 1];
929 case SSL_SECOP_CIPHER_SUPPORTED
:
930 case SSL_SECOP_CIPHER_SHARED
:
931 case SSL_SECOP_CIPHER_CHECK
:
933 const SSL_CIPHER
*c
= other
;
934 /* No ciphers below security level */
937 /* No unauthenticated ciphersuites */
938 if (c
->algorithm_auth
& SSL_aNULL
)
940 /* No MD5 mac ciphersuites */
941 if (c
->algorithm_mac
& SSL_MD5
)
943 /* SHA1 HMAC is 160 bits of security */
944 if (minbits
> 160 && c
->algorithm_mac
& SSL_SHA1
)
946 /* Level 2: no RC4 */
947 if (level
>= 2 && c
->algorithm_enc
== SSL_RC4
)
949 /* Level 3: forward secure ciphersuites only */
950 if (level
>= 3 && !(c
->algorithm_mkey
& (SSL_kEDH
| SSL_kEECDH
)))
954 case SSL_SECOP_VERSION
:
955 if (!SSL_IS_DTLS(s
)) {
956 /* SSLv3 not allowed at level 2 */
957 if (nid
<= SSL3_VERSION
&& level
>= 2)
959 /* TLS v1.1 and above only for level 3 */
960 if (nid
<= TLS1_VERSION
&& level
>= 3)
962 /* TLS v1.2 only for level 4 and above */
963 if (nid
<= TLS1_1_VERSION
&& level
>= 4)
966 /* DTLS v1.2 only for level 4 and above */
967 if (DTLS_VERSION_LT(nid
, DTLS1_2_VERSION
) && level
>= 4)
972 case SSL_SECOP_COMPRESSION
:
976 case SSL_SECOP_TICKET
:
987 int ssl_security(const SSL
*s
, int op
, int bits
, int nid
, void *other
)
989 return s
->cert
->sec_cb(s
, NULL
, op
, bits
, nid
, other
, s
->cert
->sec_ex
);
992 int ssl_ctx_security(const SSL_CTX
*ctx
, int op
, int bits
, int nid
, void *other
)
994 return ctx
->cert
->sec_cb(NULL
, ctx
, op
, bits
, nid
, other
,
998 int ssl_cert_lookup_by_nid(int nid
, size_t *pidx
)
1002 for (i
= 0; i
< OSSL_NELEM(ssl_cert_info
); i
++) {
1003 if (ssl_cert_info
[i
].nid
== nid
) {
1012 const SSL_CERT_LOOKUP
*ssl_cert_lookup_by_pkey(const EVP_PKEY
*pk
, size_t *pidx
)
1014 int nid
= EVP_PKEY_id(pk
);
1017 if (nid
== NID_undef
)
1020 if (!ssl_cert_lookup_by_nid(nid
, &tmpidx
))
1026 return &ssl_cert_info
[tmpidx
];
1029 const SSL_CERT_LOOKUP
*ssl_cert_lookup_by_idx(size_t idx
)
1031 if (idx
>= OSSL_NELEM(ssl_cert_info
))
1033 return &ssl_cert_info
[idx
];