2 * Copyright 1995-2017 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->custext, &cert->custext))
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->ctype);
253 X509_STORE_free(c->verify_store);
254 X509_STORE_free(c->chain_store);
255 custom_exts_free(&c->custext);
256 #ifndef OPENSSL_NO_PSK
257 OPENSSL_free(c->psk_identity_hint);
259 CRYPTO_THREAD_lock_free(c->lock);
263 int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
266 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
269 for (i = 0; i < sk_X509_num(chain); i++) {
270 r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0);
272 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r);
276 sk_X509_pop_free(cpk->chain, X509_free);
281 int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
283 STACK_OF(X509) *dchain;
285 return ssl_cert_set0_chain(s, ctx, NULL);
286 dchain = X509_chain_up_ref(chain);
289 if (!ssl_cert_set0_chain(s, ctx, dchain)) {
290 sk_X509_pop_free(dchain, X509_free);
296 int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
299 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
302 r = ssl_security_cert(s, ctx, x, 0, 0);
304 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r);
308 cpk->chain = sk_X509_new_null();
309 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
314 int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
316 if (!ssl_cert_add0_chain_cert(s, ctx, x))
322 int ssl_cert_select_current(CERT *c, X509 *x)
327 for (i = 0; i < SSL_PKEY_NUM; i++) {
328 CERT_PKEY *cpk = c->pkeys + i;
329 if (cpk->x509 == x && cpk->privatekey) {
335 for (i = 0; i < SSL_PKEY_NUM; i++) {
336 CERT_PKEY *cpk = c->pkeys + i;
337 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
345 int ssl_cert_set_current(CERT *c, long op)
350 if (op == SSL_CERT_SET_FIRST)
352 else if (op == SSL_CERT_SET_NEXT) {
353 idx = (int)(c->key - c->pkeys + 1);
354 if (idx >= SSL_PKEY_NUM)
358 for (i = idx; i < SSL_PKEY_NUM; i++) {
359 CERT_PKEY *cpk = c->pkeys + i;
360 if (cpk->x509 && cpk->privatekey) {
368 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
371 c->cert_cb_arg = arg;
374 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
378 X509_STORE *verify_store;
379 X509_STORE_CTX *ctx = NULL;
380 X509_VERIFY_PARAM *param;
382 if ((sk == NULL) || (sk_X509_num(sk) == 0))
385 if (s->cert->verify_store)
386 verify_store = s->cert->verify_store;
388 verify_store = s->ctx->cert_store;
390 ctx = X509_STORE_CTX_new();
392 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
396 x = sk_X509_value(sk, 0);
397 if (!X509_STORE_CTX_init(ctx, verify_store, x, sk)) {
398 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
401 param = X509_STORE_CTX_get0_param(ctx);
403 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
404 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
405 * and PKI authentication.
407 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s));
409 /* Set suite B flags if needed */
410 X509_STORE_CTX_set_flags(ctx, tls1_suiteb(s));
411 if (!X509_STORE_CTX_set_ex_data
412 (ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s)) {
416 /* Verify via DANE if enabled */
417 if (DANETLS_ENABLED(&s->dane))
418 X509_STORE_CTX_set0_dane(ctx, &s->dane);
421 * We need to inherit the verify parameters. These can be determined by
422 * the context: if its a server it will verify SSL client certificates or
426 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server");
428 * Anything non-default in "s->param" should overwrite anything in the ctx.
430 X509_VERIFY_PARAM_set1(param, s->param);
432 if (s->verify_callback)
433 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback);
435 if (s->ctx->app_verify_callback != NULL)
436 i = s->ctx->app_verify_callback(ctx, s->ctx->app_verify_arg);
438 i = X509_verify_cert(ctx);
440 s->verify_result = X509_STORE_CTX_get_error(ctx);
441 sk_X509_pop_free(s->verified_chain, X509_free);
442 s->verified_chain = NULL;
443 if (X509_STORE_CTX_get0_chain(ctx) != NULL) {
444 s->verified_chain = X509_STORE_CTX_get1_chain(ctx);
445 if (s->verified_chain == NULL) {
446 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
451 /* Move peername from the store context params to the SSL handle's */
452 X509_VERIFY_PARAM_move_peername(s->param, param);
455 X509_STORE_CTX_free(ctx);
459 static void set0_CA_list(STACK_OF(X509_NAME) **ca_list,
460 STACK_OF(X509_NAME) *name_list)
462 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
463 *ca_list = name_list;
466 STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk)
469 STACK_OF(X509_NAME) *ret;
472 ret = sk_X509_NAME_new_null();
474 SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
477 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
478 name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
479 if (name == NULL || !sk_X509_NAME_push(ret, name)) {
480 sk_X509_NAME_pop_free(ret, X509_NAME_free);
481 X509_NAME_free(name);
488 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
490 set0_CA_list(&s->ca_names, name_list);
493 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
495 set0_CA_list(&ctx->ca_names, name_list);
498 const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx)
500 return ctx->ca_names;
503 const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s)
505 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
508 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
510 SSL_CTX_set0_CA_list(ctx, name_list);
513 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
515 return ctx->ca_names;
518 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
520 SSL_set0_CA_list(s, name_list);
523 const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s)
525 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
528 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
531 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
532 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
535 static int add_ca_name(STACK_OF(X509_NAME) **sk, const X509 *x)
541 if (*sk == NULL && ((*sk = sk_X509_NAME_new_null()) == NULL))
544 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
547 if (!sk_X509_NAME_push(*sk, name)) {
548 X509_NAME_free(name);
554 int SSL_add1_CA_list(SSL *ssl, const X509 *x)
556 return add_ca_name(&ssl->ca_names, x);
559 int SSL_CTX_add1_CA_list(SSL_CTX *ctx, const X509 *x)
561 return add_ca_name(&ctx->ca_names, x);
564 int SSL_add_client_CA(SSL *ssl, X509 *x)
566 return add_ca_name(&ssl->ca_names, x);
569 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
571 return add_ca_name(&ctx->ca_names, x);
574 static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
576 return (X509_NAME_cmp(*a, *b));
579 static int xname_cmp(const X509_NAME *a, const X509_NAME *b)
581 return X509_NAME_cmp(a, b);
584 static unsigned long xname_hash(const X509_NAME *a)
586 return X509_NAME_hash((X509_NAME *)a);
590 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
591 * it doesn't really have anything to do with clients (except that a common use
592 * for a stack of CAs is to send it to the client). Actually, it doesn't have
593 * much to do with CAs, either, since it will load any old cert.
594 * \param file the file containing one or more certs.
595 * \return a ::STACK containing the certs.
597 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
599 BIO *in = BIO_new(BIO_s_file());
601 X509_NAME *xn = NULL;
602 STACK_OF(X509_NAME) *ret = NULL;
603 LHASH_OF(X509_NAME) *name_hash = lh_X509_NAME_new(xname_hash, xname_cmp);
605 if ((name_hash == NULL) || (in == NULL)) {
606 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
610 if (!BIO_read_filename(in, file))
614 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
617 ret = sk_X509_NAME_new_null();
619 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
623 if ((xn = X509_get_subject_name(x)) == NULL)
625 /* check for duplicates */
626 xn = X509_NAME_dup(xn);
629 if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) {
634 lh_X509_NAME_insert(name_hash, xn);
635 if (!sk_X509_NAME_push(ret, xn))
643 sk_X509_NAME_pop_free(ret, X509_NAME_free);
648 lh_X509_NAME_free(name_hash);
655 * Add a file of certs to a stack.
656 * \param stack the stack to add to.
657 * \param file the file to add from. All certs in this file that are not
658 * already in the stack will be added.
659 * \return 1 for success, 0 for failure. Note that in the case of failure some
660 * certs may have been added to \c stack.
663 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
668 X509_NAME *xn = NULL;
670 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
672 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
674 in = BIO_new(BIO_s_file());
677 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, ERR_R_MALLOC_FAILURE);
681 if (!BIO_read_filename(in, file))
685 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
687 if ((xn = X509_get_subject_name(x)) == NULL)
689 xn = X509_NAME_dup(xn);
692 if (sk_X509_NAME_find(stack, xn) >= 0) {
695 } else if (!sk_X509_NAME_push(stack, xn)) {
709 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
714 * Add a directory of certs to a stack.
715 * \param stack the stack to append to.
716 * \param dir the directory to append from. All files in this directory will be
717 * examined as potential certs. Any that are acceptable to
718 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
720 * \return 1 for success, 0 for failure. Note that in the case of failure some
721 * certs may have been added to \c stack.
724 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
727 OPENSSL_DIR_CTX *d = NULL;
728 const char *filename;
731 /* Note that a side effect is that the CAs will be sorted by name */
733 while ((filename = OPENSSL_DIR_read(&d, dir))) {
737 if (strlen(dir) + strlen(filename) + 2 > sizeof buf) {
738 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
739 SSL_R_PATH_TOO_LONG);
742 #ifdef OPENSSL_SYS_VMS
743 r = BIO_snprintf(buf, sizeof buf, "%s%s", dir, filename);
745 r = BIO_snprintf(buf, sizeof buf, "%s/%s", dir, filename);
747 if (r <= 0 || r >= (int)sizeof(buf))
749 if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
754 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
755 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
756 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
769 /* Build a certificate chain for current certificate */
770 int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags)
772 CERT *c = s ? s->cert : ctx->cert;
773 CERT_PKEY *cpk = c->key;
774 X509_STORE *chain_store = NULL;
775 X509_STORE_CTX *xs_ctx = NULL;
776 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
781 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
784 /* Rearranging and check the chain: add everything to a store */
785 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
786 chain_store = X509_STORE_new();
787 if (chain_store == NULL)
789 for (i = 0; i < sk_X509_num(cpk->chain); i++) {
790 x = sk_X509_value(cpk->chain, i);
791 if (!X509_STORE_add_cert(chain_store, x))
794 /* Add EE cert too: it might be self signed */
795 if (!X509_STORE_add_cert(chain_store, cpk->x509))
799 chain_store = c->chain_store;
801 chain_store = s->ctx->cert_store;
803 chain_store = ctx->cert_store;
805 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
806 untrusted = cpk->chain;
809 xs_ctx = X509_STORE_CTX_new();
810 if (xs_ctx == NULL) {
811 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
814 if (!X509_STORE_CTX_init(xs_ctx, chain_store, cpk->x509, untrusted)) {
815 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
818 /* Set suite B flags if needed */
819 X509_STORE_CTX_set_flags(xs_ctx,
820 c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
822 i = X509_verify_cert(xs_ctx);
823 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
824 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
830 chain = X509_STORE_CTX_get1_chain(xs_ctx);
832 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
833 i = X509_STORE_CTX_get_error(xs_ctx);
834 ERR_add_error_data(2, "Verify error:",
835 X509_verify_cert_error_string(i));
839 /* Remove EE certificate from chain */
840 x = sk_X509_shift(chain);
842 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
843 if (sk_X509_num(chain) > 0) {
844 /* See if last cert is self signed */
845 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
846 if (X509_get_extension_flags(x) & EXFLAG_SS) {
847 x = sk_X509_pop(chain);
853 * Check security level of all CA certificates: EE will have been checked
856 for (i = 0; i < sk_X509_num(chain); i++) {
857 x = sk_X509_value(chain, i);
858 rv = ssl_security_cert(s, ctx, x, 0, 0);
860 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv);
861 sk_X509_pop_free(chain, X509_free);
866 sk_X509_pop_free(cpk->chain, X509_free);
871 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
872 X509_STORE_free(chain_store);
873 X509_STORE_CTX_free(xs_ctx);
878 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
882 pstore = &c->chain_store;
884 pstore = &c->verify_store;
885 X509_STORE_free(*pstore);
888 X509_STORE_up_ref(store);
892 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
893 int op, int bits, int nid, void *other,
897 static const int minbits_table[5] = { 80, 112, 128, 192, 256 };
899 level = SSL_CTX_get_security_level(ctx);
901 level = SSL_get_security_level(s);
905 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
908 if (op == SSL_SECOP_TMP_DH && bits < 80)
914 minbits = minbits_table[level - 1];
916 case SSL_SECOP_CIPHER_SUPPORTED:
917 case SSL_SECOP_CIPHER_SHARED:
918 case SSL_SECOP_CIPHER_CHECK:
920 const SSL_CIPHER *c = other;
921 /* No ciphers below security level */
924 /* No unauthenticated ciphersuites */
925 if (c->algorithm_auth & SSL_aNULL)
927 /* No MD5 mac ciphersuites */
928 if (c->algorithm_mac & SSL_MD5)
930 /* SHA1 HMAC is 160 bits of security */
931 if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
933 /* Level 2: no RC4 */
934 if (level >= 2 && c->algorithm_enc == SSL_RC4)
936 /* Level 3: forward secure ciphersuites only */
937 if (level >= 3 && !(c->algorithm_mkey & (SSL_kEDH | SSL_kEECDH)))
941 case SSL_SECOP_VERSION:
942 if (!SSL_IS_DTLS(s)) {
943 /* SSLv3 not allowed at level 2 */
944 if (nid <= SSL3_VERSION && level >= 2)
946 /* TLS v1.1 and above only for level 3 */
947 if (nid <= TLS1_VERSION && level >= 3)
949 /* TLS v1.2 only for level 4 and above */
950 if (nid <= TLS1_1_VERSION && level >= 4)
953 /* DTLS v1.2 only for level 4 and above */
954 if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level >= 4)
959 case SSL_SECOP_COMPRESSION:
963 case SSL_SECOP_TICKET:
974 int ssl_security(const SSL *s, int op, int bits, int nid, void *other)
976 return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex);
979 int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other)
981 return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other,