2 * Copyright 1995-2017 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 #ifndef NO_SYS_TYPES_H
16 # include <sys/types.h>
19 #include "internal/o_dir.h"
20 #include <openssl/lhash.h>
21 #include <openssl/bio.h>
22 #include <openssl/pem.h>
23 #include <openssl/x509v3.h>
24 #include <openssl/dh.h>
25 #include <openssl/bn.h>
26 #include <openssl/crypto.h>
27 #include "internal/refcount.h"
29 #include "ssl_cert_table.h"
30 #include "internal/thread_once.h"
32 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
33 int op, int bits, int nid, void *other,
36 static CRYPTO_ONCE ssl_x509_store_ctx_once = CRYPTO_ONCE_STATIC_INIT;
37 static volatile int ssl_x509_store_ctx_idx = -1;
39 DEFINE_RUN_ONCE_STATIC(ssl_x509_store_ctx_init)
41 ssl_x509_store_ctx_idx = X509_STORE_CTX_get_ex_new_index(0,
42 "SSL for verify callback",
44 return ssl_x509_store_ctx_idx >= 0;
47 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
50 if (!RUN_ONCE(&ssl_x509_store_ctx_once, ssl_x509_store_ctx_init))
52 return ssl_x509_store_ctx_idx;
55 CERT *ssl_cert_new(void)
57 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
60 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
64 ret->key = &(ret->pkeys[SSL_PKEY_RSA]);
66 ret->sec_cb = ssl_security_default_callback;
67 ret->sec_level = OPENSSL_TLS_SECURITY_LEVEL;
69 ret->lock = CRYPTO_THREAD_lock_new();
70 if (ret->lock == NULL) {
71 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
79 CERT *ssl_cert_dup(CERT *cert)
81 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
85 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
90 ret->key = &ret->pkeys[cert->key - cert->pkeys];
91 ret->lock = CRYPTO_THREAD_lock_new();
92 if (ret->lock == NULL) {
93 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
98 if (cert->dh_tmp != NULL) {
99 ret->dh_tmp = cert->dh_tmp;
100 EVP_PKEY_up_ref(ret->dh_tmp);
102 ret->dh_tmp_cb = cert->dh_tmp_cb;
103 ret->dh_tmp_auto = cert->dh_tmp_auto;
106 for (i = 0; i < SSL_PKEY_NUM; i++) {
107 CERT_PKEY *cpk = cert->pkeys + i;
108 CERT_PKEY *rpk = ret->pkeys + i;
109 if (cpk->x509 != NULL) {
110 rpk->x509 = cpk->x509;
111 X509_up_ref(rpk->x509);
114 if (cpk->privatekey != NULL) {
115 rpk->privatekey = cpk->privatekey;
116 EVP_PKEY_up_ref(cpk->privatekey);
120 rpk->chain = X509_chain_up_ref(cpk->chain);
122 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
126 if (cert->pkeys[i].serverinfo != NULL) {
127 /* Just copy everything. */
128 ret->pkeys[i].serverinfo =
129 OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
130 if (ret->pkeys[i].serverinfo == NULL) {
131 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
134 ret->pkeys[i].serverinfo_length = cert->pkeys[i].serverinfo_length;
135 memcpy(ret->pkeys[i].serverinfo,
136 cert->pkeys[i].serverinfo, cert->pkeys[i].serverinfo_length);
140 /* Configured sigalgs copied across */
141 if (cert->conf_sigalgs) {
142 ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen
143 * sizeof(*cert->conf_sigalgs));
144 if (ret->conf_sigalgs == NULL)
146 memcpy(ret->conf_sigalgs, cert->conf_sigalgs,
147 cert->conf_sigalgslen * sizeof(*cert->conf_sigalgs));
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 * sizeof(*cert->client_sigalgs));
155 if (ret->client_sigalgs == NULL)
157 memcpy(ret->client_sigalgs, cert->client_sigalgs,
158 cert->client_sigalgslen * sizeof(*cert->client_sigalgs));
159 ret->client_sigalgslen = cert->client_sigalgslen;
161 ret->client_sigalgs = NULL;
162 /* Shared sigalgs also NULL */
163 ret->shared_sigalgs = NULL;
164 /* Copy any custom client certificate types */
166 ret->ctype = OPENSSL_memdup(cert->ctype, cert->ctype_len);
167 if (ret->ctype == NULL)
169 ret->ctype_len = cert->ctype_len;
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->custext, &cert->custext))
193 #ifndef OPENSSL_NO_PSK
194 if (cert->psk_identity_hint) {
195 ret->psk_identity_hint = OPENSSL_strdup(cert->psk_identity_hint);
196 if (ret->psk_identity_hint == NULL)
208 /* Free up and clear all certificates and chains */
210 void ssl_cert_clear_certs(CERT *c)
215 for (i = 0; i < SSL_PKEY_NUM; i++) {
216 CERT_PKEY *cpk = c->pkeys + i;
217 X509_free(cpk->x509);
219 EVP_PKEY_free(cpk->privatekey);
220 cpk->privatekey = NULL;
221 sk_X509_pop_free(cpk->chain, X509_free);
223 OPENSSL_free(cpk->serverinfo);
224 cpk->serverinfo = NULL;
225 cpk->serverinfo_length = 0;
229 void ssl_cert_free(CERT *c)
236 CRYPTO_DOWN_REF(&c->references, &i, c->lock);
237 REF_PRINT_COUNT("CERT", c);
240 REF_ASSERT_ISNT(i < 0);
242 #ifndef OPENSSL_NO_DH
243 EVP_PKEY_free(c->dh_tmp);
246 ssl_cert_clear_certs(c);
247 OPENSSL_free(c->conf_sigalgs);
248 OPENSSL_free(c->client_sigalgs);
249 OPENSSL_free(c->shared_sigalgs);
250 OPENSSL_free(c->ctype);
251 X509_STORE_free(c->verify_store);
252 X509_STORE_free(c->chain_store);
253 custom_exts_free(&c->custext);
254 #ifndef OPENSSL_NO_PSK
255 OPENSSL_free(c->psk_identity_hint);
257 CRYPTO_THREAD_lock_free(c->lock);
261 int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
264 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
267 for (i = 0; i < sk_X509_num(chain); i++) {
268 r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0);
270 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r);
274 sk_X509_pop_free(cpk->chain, X509_free);
279 int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
281 STACK_OF(X509) *dchain;
283 return ssl_cert_set0_chain(s, ctx, NULL);
284 dchain = X509_chain_up_ref(chain);
287 if (!ssl_cert_set0_chain(s, ctx, dchain)) {
288 sk_X509_pop_free(dchain, X509_free);
294 int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
297 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
300 r = ssl_security_cert(s, ctx, x, 0, 0);
302 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r);
306 cpk->chain = sk_X509_new_null();
307 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
312 int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
314 if (!ssl_cert_add0_chain_cert(s, ctx, x))
320 int ssl_cert_select_current(CERT *c, X509 *x)
325 for (i = 0; i < SSL_PKEY_NUM; i++) {
326 CERT_PKEY *cpk = c->pkeys + i;
327 if (cpk->x509 == x && cpk->privatekey) {
333 for (i = 0; i < SSL_PKEY_NUM; i++) {
334 CERT_PKEY *cpk = c->pkeys + i;
335 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
343 int ssl_cert_set_current(CERT *c, long op)
348 if (op == SSL_CERT_SET_FIRST)
350 else if (op == SSL_CERT_SET_NEXT) {
351 idx = (int)(c->key - c->pkeys + 1);
352 if (idx >= SSL_PKEY_NUM)
356 for (i = idx; i < SSL_PKEY_NUM; i++) {
357 CERT_PKEY *cpk = c->pkeys + i;
358 if (cpk->x509 && cpk->privatekey) {
366 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
369 c->cert_cb_arg = arg;
372 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
376 X509_STORE *verify_store;
377 X509_STORE_CTX *ctx = NULL;
378 X509_VERIFY_PARAM *param;
380 if ((sk == NULL) || (sk_X509_num(sk) == 0))
383 if (s->cert->verify_store)
384 verify_store = s->cert->verify_store;
386 verify_store = s->ctx->cert_store;
388 ctx = X509_STORE_CTX_new();
390 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
394 x = sk_X509_value(sk, 0);
395 if (!X509_STORE_CTX_init(ctx, verify_store, x, sk)) {
396 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
399 param = X509_STORE_CTX_get0_param(ctx);
401 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
402 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
403 * and PKI authentication.
405 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s));
407 /* Set suite B flags if needed */
408 X509_STORE_CTX_set_flags(ctx, tls1_suiteb(s));
409 if (!X509_STORE_CTX_set_ex_data
410 (ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s)) {
414 /* Verify via DANE if enabled */
415 if (DANETLS_ENABLED(&s->dane))
416 X509_STORE_CTX_set0_dane(ctx, &s->dane);
419 * We need to inherit the verify parameters. These can be determined by
420 * the context: if its a server it will verify SSL client certificates or
424 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server");
426 * Anything non-default in "s->param" should overwrite anything in the ctx.
428 X509_VERIFY_PARAM_set1(param, s->param);
430 if (s->verify_callback)
431 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback);
433 if (s->ctx->app_verify_callback != NULL)
434 i = s->ctx->app_verify_callback(ctx, s->ctx->app_verify_arg);
436 i = X509_verify_cert(ctx);
438 s->verify_result = X509_STORE_CTX_get_error(ctx);
439 sk_X509_pop_free(s->verified_chain, X509_free);
440 s->verified_chain = NULL;
441 if (X509_STORE_CTX_get0_chain(ctx) != NULL) {
442 s->verified_chain = X509_STORE_CTX_get1_chain(ctx);
443 if (s->verified_chain == NULL) {
444 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
449 /* Move peername from the store context params to the SSL handle's */
450 X509_VERIFY_PARAM_move_peername(s->param, param);
453 X509_STORE_CTX_free(ctx);
457 static void set0_CA_list(STACK_OF(X509_NAME) **ca_list,
458 STACK_OF(X509_NAME) *name_list)
460 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
461 *ca_list = name_list;
464 STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk)
467 STACK_OF(X509_NAME) *ret;
470 ret = sk_X509_NAME_new_null();
472 SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
475 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
476 name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
477 if (name == NULL || !sk_X509_NAME_push(ret, name)) {
478 sk_X509_NAME_pop_free(ret, X509_NAME_free);
479 X509_NAME_free(name);
486 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
488 set0_CA_list(&s->ca_names, name_list);
491 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
493 set0_CA_list(&ctx->ca_names, name_list);
496 const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx)
498 return ctx->ca_names;
501 const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s)
503 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
506 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
508 SSL_CTX_set0_CA_list(ctx, name_list);
511 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
513 return ctx->ca_names;
516 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
518 SSL_set0_CA_list(s, name_list);
521 const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s)
523 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
526 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
529 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
530 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
533 static int add_ca_name(STACK_OF(X509_NAME) **sk, const X509 *x)
539 if (*sk == NULL && ((*sk = sk_X509_NAME_new_null()) == NULL))
542 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
545 if (!sk_X509_NAME_push(*sk, name)) {
546 X509_NAME_free(name);
552 int SSL_add1_CA_list(SSL *ssl, const X509 *x)
554 return add_ca_name(&ssl->ca_names, x);
557 int SSL_CTX_add1_CA_list(SSL_CTX *ctx, const X509 *x)
559 return add_ca_name(&ctx->ca_names, x);
562 int SSL_add_client_CA(SSL *ssl, X509 *x)
564 return add_ca_name(&ssl->ca_names, x);
567 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
569 return add_ca_name(&ctx->ca_names, x);
572 static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
574 return (X509_NAME_cmp(*a, *b));
577 static int xname_cmp(const X509_NAME *a, const X509_NAME *b)
579 return X509_NAME_cmp(a, b);
582 static unsigned long xname_hash(const X509_NAME *a)
584 return X509_NAME_hash((X509_NAME *)a);
588 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
589 * it doesn't really have anything to do with clients (except that a common use
590 * for a stack of CAs is to send it to the client). Actually, it doesn't have
591 * much to do with CAs, either, since it will load any old cert.
592 * \param file the file containing one or more certs.
593 * \return a ::STACK containing the certs.
595 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
597 BIO *in = BIO_new(BIO_s_file());
599 X509_NAME *xn = NULL;
600 STACK_OF(X509_NAME) *ret = NULL;
601 LHASH_OF(X509_NAME) *name_hash = lh_X509_NAME_new(xname_hash, xname_cmp);
603 if ((name_hash == NULL) || (in == NULL)) {
604 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
608 if (!BIO_read_filename(in, file))
612 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
615 ret = sk_X509_NAME_new_null();
617 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
621 if ((xn = X509_get_subject_name(x)) == NULL)
623 /* check for duplicates */
624 xn = X509_NAME_dup(xn);
627 if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) {
632 lh_X509_NAME_insert(name_hash, xn);
633 if (!sk_X509_NAME_push(ret, xn))
641 sk_X509_NAME_pop_free(ret, X509_NAME_free);
646 lh_X509_NAME_free(name_hash);
653 * Add a file of certs to a stack.
654 * \param stack the stack to add to.
655 * \param file the file to add from. All certs in this file that are not
656 * already in the stack will be added.
657 * \return 1 for success, 0 for failure. Note that in the case of failure some
658 * certs may have been added to \c stack.
661 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
666 X509_NAME *xn = NULL;
668 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
670 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
672 in = BIO_new(BIO_s_file());
675 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, ERR_R_MALLOC_FAILURE);
679 if (!BIO_read_filename(in, file))
683 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
685 if ((xn = X509_get_subject_name(x)) == NULL)
687 xn = X509_NAME_dup(xn);
690 if (sk_X509_NAME_find(stack, xn) >= 0) {
693 } else if (!sk_X509_NAME_push(stack, xn)) {
707 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
712 * Add a directory of certs to a stack.
713 * \param stack the stack to append to.
714 * \param dir the directory to append from. All files in this directory will be
715 * examined as potential certs. Any that are acceptable to
716 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
718 * \return 1 for success, 0 for failure. Note that in the case of failure some
719 * certs may have been added to \c stack.
722 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
725 OPENSSL_DIR_CTX *d = NULL;
726 const char *filename;
729 /* Note that a side effect is that the CAs will be sorted by name */
731 while ((filename = OPENSSL_DIR_read(&d, dir))) {
735 if (strlen(dir) + strlen(filename) + 2 > sizeof buf) {
736 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
737 SSL_R_PATH_TOO_LONG);
740 #ifdef OPENSSL_SYS_VMS
741 r = BIO_snprintf(buf, sizeof buf, "%s%s", dir, filename);
743 r = BIO_snprintf(buf, sizeof buf, "%s/%s", dir, filename);
745 if (r <= 0 || r >= (int)sizeof(buf))
747 if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
752 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
753 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
754 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
767 /* Build a certificate chain for current certificate */
768 int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags)
770 CERT *c = s ? s->cert : ctx->cert;
771 CERT_PKEY *cpk = c->key;
772 X509_STORE *chain_store = NULL;
773 X509_STORE_CTX *xs_ctx = NULL;
774 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
779 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
782 /* Rearranging and check the chain: add everything to a store */
783 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
784 chain_store = X509_STORE_new();
785 if (chain_store == NULL)
787 for (i = 0; i < sk_X509_num(cpk->chain); i++) {
788 x = sk_X509_value(cpk->chain, i);
789 if (!X509_STORE_add_cert(chain_store, x))
792 /* Add EE cert too: it might be self signed */
793 if (!X509_STORE_add_cert(chain_store, cpk->x509))
797 chain_store = c->chain_store;
799 chain_store = s->ctx->cert_store;
801 chain_store = ctx->cert_store;
803 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
804 untrusted = cpk->chain;
807 xs_ctx = X509_STORE_CTX_new();
808 if (xs_ctx == NULL) {
809 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
812 if (!X509_STORE_CTX_init(xs_ctx, chain_store, cpk->x509, untrusted)) {
813 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
816 /* Set suite B flags if needed */
817 X509_STORE_CTX_set_flags(xs_ctx,
818 c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
820 i = X509_verify_cert(xs_ctx);
821 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
822 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
828 chain = X509_STORE_CTX_get1_chain(xs_ctx);
830 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
831 i = X509_STORE_CTX_get_error(xs_ctx);
832 ERR_add_error_data(2, "Verify error:",
833 X509_verify_cert_error_string(i));
837 /* Remove EE certificate from chain */
838 x = sk_X509_shift(chain);
840 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
841 if (sk_X509_num(chain) > 0) {
842 /* See if last cert is self signed */
843 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
844 if (X509_get_extension_flags(x) & EXFLAG_SS) {
845 x = sk_X509_pop(chain);
851 * Check security level of all CA certificates: EE will have been checked
854 for (i = 0; i < sk_X509_num(chain); i++) {
855 x = sk_X509_value(chain, i);
856 rv = ssl_security_cert(s, ctx, x, 0, 0);
858 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv);
859 sk_X509_pop_free(chain, X509_free);
864 sk_X509_pop_free(cpk->chain, X509_free);
869 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
870 X509_STORE_free(chain_store);
871 X509_STORE_CTX_free(xs_ctx);
876 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
880 pstore = &c->chain_store;
882 pstore = &c->verify_store;
883 X509_STORE_free(*pstore);
886 X509_STORE_up_ref(store);
890 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
891 int op, int bits, int nid, void *other,
895 static const int minbits_table[5] = { 80, 112, 128, 192, 256 };
897 level = SSL_CTX_get_security_level(ctx);
899 level = SSL_get_security_level(s);
903 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
906 if (op == SSL_SECOP_TMP_DH && bits < 80)
912 minbits = minbits_table[level - 1];
914 case SSL_SECOP_CIPHER_SUPPORTED:
915 case SSL_SECOP_CIPHER_SHARED:
916 case SSL_SECOP_CIPHER_CHECK:
918 const SSL_CIPHER *c = other;
919 /* No ciphers below security level */
922 /* No unauthenticated ciphersuites */
923 if (c->algorithm_auth & SSL_aNULL)
925 /* No MD5 mac ciphersuites */
926 if (c->algorithm_mac & SSL_MD5)
928 /* SHA1 HMAC is 160 bits of security */
929 if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
931 /* Level 2: no RC4 */
932 if (level >= 2 && c->algorithm_enc == SSL_RC4)
934 /* Level 3: forward secure ciphersuites only */
935 if (level >= 3 && !(c->algorithm_mkey & (SSL_kEDH | SSL_kEECDH)))
939 case SSL_SECOP_VERSION:
940 if (!SSL_IS_DTLS(s)) {
941 /* SSLv3 not allowed at level 2 */
942 if (nid <= SSL3_VERSION && level >= 2)
944 /* TLS v1.1 and above only for level 3 */
945 if (nid <= TLS1_VERSION && level >= 3)
947 /* TLS v1.2 only for level 4 and above */
948 if (nid <= TLS1_1_VERSION && level >= 4)
951 /* DTLS v1.2 only for level 4 and above */
952 if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level >= 4)
957 case SSL_SECOP_COMPRESSION:
961 case SSL_SECOP_TICKET:
972 int ssl_security(const SSL *s, int op, int bits, int nid, void *other)
974 return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex);
977 int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other)
979 return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other,
983 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, size_t *pidx)
985 int nid = EVP_PKEY_id(pk);
988 if (nid == NID_undef)
991 for (i = 0; i < OSSL_NELEM(ssl_cert_info); i++) {
992 if (ssl_cert_info[i].nid == nid) {
995 return &ssl_cert_info[i];
1001 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx)
1003 if (idx >= OSSL_NELEM(ssl_cert_info))
1005 return &ssl_cert_info[idx];