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]);
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 * sizeof(*cert->conf_sigalgs));
146 if (ret->conf_sigalgs == NULL)
148 memcpy(ret->conf_sigalgs, cert->conf_sigalgs,
149 cert->conf_sigalgslen * sizeof(*cert->conf_sigalgs));
150 ret->conf_sigalgslen = cert->conf_sigalgslen;
152 ret->conf_sigalgs = NULL;
154 if (cert->client_sigalgs) {
155 ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen
156 * sizeof(*cert->client_sigalgs));
157 if (ret->client_sigalgs == NULL)
159 memcpy(ret->client_sigalgs, cert->client_sigalgs,
160 cert->client_sigalgslen * sizeof(*cert->client_sigalgs));
161 ret->client_sigalgslen = cert->client_sigalgslen;
163 ret->client_sigalgs = NULL;
164 /* Shared sigalgs also NULL */
165 ret->shared_sigalgs = NULL;
166 /* Copy any custom client certificate types */
168 ret->ctype = OPENSSL_memdup(cert->ctype, cert->ctype_len);
169 if (ret->ctype == NULL)
171 ret->ctype_len = cert->ctype_len;
174 ret->cert_flags = cert->cert_flags;
176 ret->cert_cb = cert->cert_cb;
177 ret->cert_cb_arg = cert->cert_cb_arg;
179 if (cert->verify_store) {
180 X509_STORE_up_ref(cert->verify_store);
181 ret->verify_store = cert->verify_store;
184 if (cert->chain_store) {
185 X509_STORE_up_ref(cert->chain_store);
186 ret->chain_store = cert->chain_store;
189 ret->sec_cb = cert->sec_cb;
190 ret->sec_level = cert->sec_level;
191 ret->sec_ex = cert->sec_ex;
193 if (!custom_exts_copy(&ret->cli_ext, &cert->cli_ext))
195 if (!custom_exts_copy(&ret->srv_ext, &cert->srv_ext))
197 #ifndef OPENSSL_NO_PSK
198 if (cert->psk_identity_hint) {
199 ret->psk_identity_hint = OPENSSL_strdup(cert->psk_identity_hint);
200 if (ret->psk_identity_hint == NULL)
212 /* Free up and clear all certificates and chains */
214 void ssl_cert_clear_certs(CERT *c)
219 for (i = 0; i < SSL_PKEY_NUM; i++) {
220 CERT_PKEY *cpk = c->pkeys + i;
221 X509_free(cpk->x509);
223 EVP_PKEY_free(cpk->privatekey);
224 cpk->privatekey = NULL;
225 sk_X509_pop_free(cpk->chain, X509_free);
227 OPENSSL_free(cpk->serverinfo);
228 cpk->serverinfo = NULL;
229 cpk->serverinfo_length = 0;
233 void ssl_cert_free(CERT *c)
240 CRYPTO_DOWN_REF(&c->references, &i, c->lock);
241 REF_PRINT_COUNT("CERT", c);
244 REF_ASSERT_ISNT(i < 0);
246 #ifndef OPENSSL_NO_DH
247 EVP_PKEY_free(c->dh_tmp);
250 ssl_cert_clear_certs(c);
251 OPENSSL_free(c->conf_sigalgs);
252 OPENSSL_free(c->client_sigalgs);
253 OPENSSL_free(c->shared_sigalgs);
254 OPENSSL_free(c->ctype);
255 X509_STORE_free(c->verify_store);
256 X509_STORE_free(c->chain_store);
257 custom_exts_free(&c->cli_ext);
258 custom_exts_free(&c->srv_ext);
259 #ifndef OPENSSL_NO_PSK
260 OPENSSL_free(c->psk_identity_hint);
262 CRYPTO_THREAD_lock_free(c->lock);
266 int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
269 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
272 for (i = 0; i < sk_X509_num(chain); i++) {
273 r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0);
275 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r);
279 sk_X509_pop_free(cpk->chain, X509_free);
284 int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
286 STACK_OF(X509) *dchain;
288 return ssl_cert_set0_chain(s, ctx, NULL);
289 dchain = X509_chain_up_ref(chain);
292 if (!ssl_cert_set0_chain(s, ctx, dchain)) {
293 sk_X509_pop_free(dchain, X509_free);
299 int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
302 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
305 r = ssl_security_cert(s, ctx, x, 0, 0);
307 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r);
311 cpk->chain = sk_X509_new_null();
312 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
317 int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
319 if (!ssl_cert_add0_chain_cert(s, ctx, x))
325 int ssl_cert_select_current(CERT *c, X509 *x)
330 for (i = 0; i < SSL_PKEY_NUM; i++) {
331 CERT_PKEY *cpk = c->pkeys + i;
332 if (cpk->x509 == x && cpk->privatekey) {
338 for (i = 0; i < SSL_PKEY_NUM; i++) {
339 CERT_PKEY *cpk = c->pkeys + i;
340 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
348 int ssl_cert_set_current(CERT *c, long op)
353 if (op == SSL_CERT_SET_FIRST)
355 else if (op == SSL_CERT_SET_NEXT) {
356 idx = (int)(c->key - c->pkeys + 1);
357 if (idx >= SSL_PKEY_NUM)
361 for (i = idx; i < SSL_PKEY_NUM; i++) {
362 CERT_PKEY *cpk = c->pkeys + i;
363 if (cpk->x509 && cpk->privatekey) {
371 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
374 c->cert_cb_arg = arg;
377 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
381 X509_STORE *verify_store;
382 X509_STORE_CTX *ctx = NULL;
383 X509_VERIFY_PARAM *param;
385 if ((sk == NULL) || (sk_X509_num(sk) == 0))
388 if (s->cert->verify_store)
389 verify_store = s->cert->verify_store;
391 verify_store = s->ctx->cert_store;
393 ctx = X509_STORE_CTX_new();
395 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
399 x = sk_X509_value(sk, 0);
400 if (!X509_STORE_CTX_init(ctx, verify_store, x, sk)) {
401 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
404 param = X509_STORE_CTX_get0_param(ctx);
406 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
407 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
408 * and PKI authentication.
410 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s));
412 /* Set suite B flags if needed */
413 X509_STORE_CTX_set_flags(ctx, tls1_suiteb(s));
414 if (!X509_STORE_CTX_set_ex_data
415 (ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s)) {
419 /* Verify via DANE if enabled */
420 if (DANETLS_ENABLED(&s->dane))
421 X509_STORE_CTX_set0_dane(ctx, &s->dane);
424 * We need to inherit the verify parameters. These can be determined by
425 * the context: if its a server it will verify SSL client certificates or
429 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server");
431 * Anything non-default in "s->param" should overwrite anything in the ctx.
433 X509_VERIFY_PARAM_set1(param, s->param);
435 if (s->verify_callback)
436 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback);
438 if (s->ctx->app_verify_callback != NULL)
439 i = s->ctx->app_verify_callback(ctx, s->ctx->app_verify_arg);
441 i = X509_verify_cert(ctx);
443 s->verify_result = X509_STORE_CTX_get_error(ctx);
444 sk_X509_pop_free(s->verified_chain, X509_free);
445 s->verified_chain = NULL;
446 if (X509_STORE_CTX_get0_chain(ctx) != NULL) {
447 s->verified_chain = X509_STORE_CTX_get1_chain(ctx);
448 if (s->verified_chain == NULL) {
449 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
454 /* Move peername from the store context params to the SSL handle's */
455 X509_VERIFY_PARAM_move_peername(s->param, param);
458 X509_STORE_CTX_free(ctx);
462 static void set0_CA_list(STACK_OF(X509_NAME) **ca_list,
463 STACK_OF(X509_NAME) *name_list)
465 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
466 *ca_list = name_list;
469 STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk)
472 STACK_OF(X509_NAME) *ret;
475 ret = sk_X509_NAME_new_null();
477 SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
480 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
481 name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
482 if (name == NULL || !sk_X509_NAME_push(ret, name)) {
483 sk_X509_NAME_pop_free(ret, X509_NAME_free);
484 X509_NAME_free(name);
491 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
493 set0_CA_list(&s->ca_names, name_list);
496 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
498 set0_CA_list(&ctx->ca_names, name_list);
501 const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx)
503 return ctx->ca_names;
506 const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s)
508 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
511 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
513 SSL_CTX_set0_CA_list(ctx, name_list);
516 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
518 return ctx->ca_names;
521 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
523 SSL_set0_CA_list(s, name_list);
526 const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s)
528 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
531 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
534 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
535 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
538 static int add_ca_name(STACK_OF(X509_NAME) **sk, const X509 *x)
544 if (*sk == NULL && ((*sk = sk_X509_NAME_new_null()) == NULL))
547 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
550 if (!sk_X509_NAME_push(*sk, name)) {
551 X509_NAME_free(name);
557 int SSL_add1_CA_list(SSL *ssl, const X509 *x)
559 return add_ca_name(&ssl->ca_names, x);
562 int SSL_CTX_add1_CA_list(SSL_CTX *ctx, const X509 *x)
564 return add_ca_name(&ctx->ca_names, x);
567 int SSL_add_client_CA(SSL *ssl, X509 *x)
569 return add_ca_name(&ssl->ca_names, x);
572 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
574 return add_ca_name(&ctx->ca_names, x);
577 static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
579 return (X509_NAME_cmp(*a, *b));
582 static int xname_cmp(const X509_NAME *a, const X509_NAME *b)
584 return X509_NAME_cmp(a, b);
587 static unsigned long xname_hash(const X509_NAME *a)
589 return X509_NAME_hash((X509_NAME *)a);
593 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
594 * it doesn't really have anything to do with clients (except that a common use
595 * for a stack of CAs is to send it to the client). Actually, it doesn't have
596 * much to do with CAs, either, since it will load any old cert.
597 * \param file the file containing one or more certs.
598 * \return a ::STACK containing the certs.
600 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
602 BIO *in = BIO_new(BIO_s_file());
604 X509_NAME *xn = NULL;
605 STACK_OF(X509_NAME) *ret = NULL;
606 LHASH_OF(X509_NAME) *name_hash = lh_X509_NAME_new(xname_hash, xname_cmp);
608 if ((name_hash == NULL) || (in == NULL)) {
609 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
613 if (!BIO_read_filename(in, file))
617 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
620 ret = sk_X509_NAME_new_null();
622 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
626 if ((xn = X509_get_subject_name(x)) == NULL)
628 /* check for duplicates */
629 xn = X509_NAME_dup(xn);
632 if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) {
637 lh_X509_NAME_insert(name_hash, xn);
638 if (!sk_X509_NAME_push(ret, xn))
646 sk_X509_NAME_pop_free(ret, X509_NAME_free);
651 lh_X509_NAME_free(name_hash);
658 * Add a file of certs to a stack.
659 * \param stack the stack to add to.
660 * \param file the file to add from. All certs in this file that are not
661 * already in the stack will be added.
662 * \return 1 for success, 0 for failure. Note that in the case of failure some
663 * certs may have been added to \c stack.
666 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
671 X509_NAME *xn = NULL;
673 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
675 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
677 in = BIO_new(BIO_s_file());
680 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, ERR_R_MALLOC_FAILURE);
684 if (!BIO_read_filename(in, file))
688 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
690 if ((xn = X509_get_subject_name(x)) == NULL)
692 xn = X509_NAME_dup(xn);
695 if (sk_X509_NAME_find(stack, xn) >= 0) {
698 } else if (!sk_X509_NAME_push(stack, xn)) {
712 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
717 * Add a directory of certs to a stack.
718 * \param stack the stack to append to.
719 * \param dir the directory to append from. All files in this directory will be
720 * examined as potential certs. Any that are acceptable to
721 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
723 * \return 1 for success, 0 for failure. Note that in the case of failure some
724 * certs may have been added to \c stack.
727 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
730 OPENSSL_DIR_CTX *d = NULL;
731 const char *filename;
734 /* Note that a side effect is that the CAs will be sorted by name */
736 while ((filename = OPENSSL_DIR_read(&d, dir))) {
740 if (strlen(dir) + strlen(filename) + 2 > sizeof buf) {
741 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
742 SSL_R_PATH_TOO_LONG);
745 #ifdef OPENSSL_SYS_VMS
746 r = BIO_snprintf(buf, sizeof buf, "%s%s", dir, filename);
748 r = BIO_snprintf(buf, sizeof buf, "%s/%s", dir, filename);
750 if (r <= 0 || r >= (int)sizeof(buf))
752 if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
757 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
758 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
759 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
772 /* Build a certificate chain for current certificate */
773 int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags)
775 CERT *c = s ? s->cert : ctx->cert;
776 CERT_PKEY *cpk = c->key;
777 X509_STORE *chain_store = NULL;
778 X509_STORE_CTX *xs_ctx = NULL;
779 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
785 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
788 /* Rearranging and check the chain: add everything to a store */
789 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
790 chain_store = X509_STORE_new();
791 if (chain_store == NULL)
793 for (i = 0; i < sk_X509_num(cpk->chain); i++) {
794 x = sk_X509_value(cpk->chain, i);
795 if (!X509_STORE_add_cert(chain_store, x)) {
796 error = ERR_peek_last_error();
797 if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
798 ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
803 /* Add EE cert too: it might be self signed */
804 if (!X509_STORE_add_cert(chain_store, cpk->x509)) {
805 error = ERR_peek_last_error();
806 if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
807 ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
813 chain_store = c->chain_store;
815 chain_store = s->ctx->cert_store;
817 chain_store = ctx->cert_store;
819 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
820 untrusted = cpk->chain;
823 xs_ctx = X509_STORE_CTX_new();
824 if (xs_ctx == NULL) {
825 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
828 if (!X509_STORE_CTX_init(xs_ctx, chain_store, cpk->x509, untrusted)) {
829 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
832 /* Set suite B flags if needed */
833 X509_STORE_CTX_set_flags(xs_ctx,
834 c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
836 i = X509_verify_cert(xs_ctx);
837 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
838 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
844 chain = X509_STORE_CTX_get1_chain(xs_ctx);
846 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
847 i = X509_STORE_CTX_get_error(xs_ctx);
848 ERR_add_error_data(2, "Verify error:",
849 X509_verify_cert_error_string(i));
853 /* Remove EE certificate from chain */
854 x = sk_X509_shift(chain);
856 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
857 if (sk_X509_num(chain) > 0) {
858 /* See if last cert is self signed */
859 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
860 if (X509_get_extension_flags(x) & EXFLAG_SS) {
861 x = sk_X509_pop(chain);
867 * Check security level of all CA certificates: EE will have been checked
870 for (i = 0; i < sk_X509_num(chain); i++) {
871 x = sk_X509_value(chain, i);
872 rv = ssl_security_cert(s, ctx, x, 0, 0);
874 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv);
875 sk_X509_pop_free(chain, X509_free);
880 sk_X509_pop_free(cpk->chain, X509_free);
885 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
886 X509_STORE_free(chain_store);
887 X509_STORE_CTX_free(xs_ctx);
892 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
896 pstore = &c->chain_store;
898 pstore = &c->verify_store;
899 X509_STORE_free(*pstore);
902 X509_STORE_up_ref(store);
906 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
907 int op, int bits, int nid, void *other,
911 static const int minbits_table[5] = { 80, 112, 128, 192, 256 };
913 level = SSL_CTX_get_security_level(ctx);
915 level = SSL_get_security_level(s);
919 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
922 if (op == SSL_SECOP_TMP_DH && bits < 80)
928 minbits = minbits_table[level - 1];
930 case SSL_SECOP_CIPHER_SUPPORTED:
931 case SSL_SECOP_CIPHER_SHARED:
932 case SSL_SECOP_CIPHER_CHECK:
934 const SSL_CIPHER *c = other;
935 /* No ciphers below security level */
938 /* No unauthenticated ciphersuites */
939 if (c->algorithm_auth & SSL_aNULL)
941 /* No MD5 mac ciphersuites */
942 if (c->algorithm_mac & SSL_MD5)
944 /* SHA1 HMAC is 160 bits of security */
945 if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
947 /* Level 2: no RC4 */
948 if (level >= 2 && c->algorithm_enc == SSL_RC4)
950 /* Level 3: forward secure ciphersuites only */
951 if (level >= 3 && !(c->algorithm_mkey & (SSL_kEDH | SSL_kEECDH)))
955 case SSL_SECOP_VERSION:
956 if (!SSL_IS_DTLS(s)) {
957 /* SSLv3 not allowed at level 2 */
958 if (nid <= SSL3_VERSION && level >= 2)
960 /* TLS v1.1 and above only for level 3 */
961 if (nid <= TLS1_VERSION && level >= 3)
963 /* TLS v1.2 only for level 4 and above */
964 if (nid <= TLS1_1_VERSION && level >= 4)
967 /* DTLS v1.2 only for level 4 and above */
968 if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level >= 4)
973 case SSL_SECOP_COMPRESSION:
977 case SSL_SECOP_TICKET:
988 int ssl_security(const SSL *s, int op, int bits, int nid, void *other)
990 return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex);
993 int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other)
995 return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other,