2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
5 * Licensed under the Apache License 2.0 (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/store.h>
19 #include <openssl/x509v3.h>
20 #include <openssl/dh.h>
21 #include <openssl/bn.h>
22 #include <openssl/crypto.h>
23 #include "internal/refcount.h"
24 #include "ssl_local.h"
25 #include "ssl_cert_table.h"
26 #include "internal/thread_once.h"
29 DEFINE_STACK_OF(X509_NAME)
31 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
32 int op, int bits, int nid, void *other,
35 static CRYPTO_ONCE ssl_x509_store_ctx_once = CRYPTO_ONCE_STATIC_INIT;
36 static volatile int ssl_x509_store_ctx_idx = -1;
38 DEFINE_RUN_ONCE_STATIC(ssl_x509_store_ctx_init)
40 ssl_x509_store_ctx_idx = X509_STORE_CTX_get_ex_new_index(0,
41 "SSL for verify callback",
43 return ssl_x509_store_ctx_idx >= 0;
46 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
49 if (!RUN_ONCE(&ssl_x509_store_ctx_once, ssl_x509_store_ctx_init))
51 return ssl_x509_store_ctx_idx;
54 CERT *ssl_cert_new(void)
56 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
59 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
63 ret->key = &(ret->pkeys[SSL_PKEY_RSA]);
65 ret->sec_cb = ssl_security_default_callback;
66 ret->sec_level = OPENSSL_TLS_SECURITY_LEVEL;
68 ret->lock = CRYPTO_THREAD_lock_new();
69 if (ret->lock == NULL) {
70 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
78 CERT *ssl_cert_dup(CERT *cert)
80 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
84 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
89 ret->key = &ret->pkeys[cert->key - cert->pkeys];
90 ret->lock = CRYPTO_THREAD_lock_new();
91 if (ret->lock == NULL) {
92 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
97 if (cert->dh_tmp != NULL) {
98 ret->dh_tmp = cert->dh_tmp;
99 EVP_PKEY_up_ref(ret->dh_tmp);
101 ret->dh_tmp_cb = cert->dh_tmp_cb;
102 ret->dh_tmp_auto = cert->dh_tmp_auto;
105 for (i = 0; i < SSL_PKEY_NUM; i++) {
106 CERT_PKEY *cpk = cert->pkeys + i;
107 CERT_PKEY *rpk = ret->pkeys + i;
108 if (cpk->x509 != NULL) {
109 rpk->x509 = cpk->x509;
110 X509_up_ref(rpk->x509);
113 if (cpk->privatekey != NULL) {
114 rpk->privatekey = cpk->privatekey;
115 EVP_PKEY_up_ref(cpk->privatekey);
119 rpk->chain = X509_chain_up_ref(cpk->chain);
121 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
125 if (cert->pkeys[i].serverinfo != NULL) {
126 /* Just copy everything. */
127 ret->pkeys[i].serverinfo =
128 OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
129 if (ret->pkeys[i].serverinfo == NULL) {
130 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
133 ret->pkeys[i].serverinfo_length = cert->pkeys[i].serverinfo_length;
134 memcpy(ret->pkeys[i].serverinfo,
135 cert->pkeys[i].serverinfo, cert->pkeys[i].serverinfo_length);
139 /* Configured sigalgs copied across */
140 if (cert->conf_sigalgs) {
141 ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen
142 * sizeof(*cert->conf_sigalgs));
143 if (ret->conf_sigalgs == NULL)
145 memcpy(ret->conf_sigalgs, cert->conf_sigalgs,
146 cert->conf_sigalgslen * sizeof(*cert->conf_sigalgs));
147 ret->conf_sigalgslen = cert->conf_sigalgslen;
149 ret->conf_sigalgs = NULL;
151 if (cert->client_sigalgs) {
152 ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen
153 * sizeof(*cert->client_sigalgs));
154 if (ret->client_sigalgs == NULL)
156 memcpy(ret->client_sigalgs, cert->client_sigalgs,
157 cert->client_sigalgslen * sizeof(*cert->client_sigalgs));
158 ret->client_sigalgslen = cert->client_sigalgslen;
160 ret->client_sigalgs = NULL;
161 /* Copy any custom client certificate types */
163 ret->ctype = OPENSSL_memdup(cert->ctype, cert->ctype_len);
164 if (ret->ctype == NULL)
166 ret->ctype_len = cert->ctype_len;
169 ret->cert_flags = cert->cert_flags;
171 ret->cert_cb = cert->cert_cb;
172 ret->cert_cb_arg = cert->cert_cb_arg;
174 if (cert->verify_store) {
175 X509_STORE_up_ref(cert->verify_store);
176 ret->verify_store = cert->verify_store;
179 if (cert->chain_store) {
180 X509_STORE_up_ref(cert->chain_store);
181 ret->chain_store = cert->chain_store;
184 ret->sec_cb = cert->sec_cb;
185 ret->sec_level = cert->sec_level;
186 ret->sec_ex = cert->sec_ex;
188 if (!custom_exts_copy(&ret->custext, &cert->custext))
190 #ifndef OPENSSL_NO_PSK
191 if (cert->psk_identity_hint) {
192 ret->psk_identity_hint = OPENSSL_strdup(cert->psk_identity_hint);
193 if (ret->psk_identity_hint == NULL)
205 /* Free up and clear all certificates and chains */
207 void ssl_cert_clear_certs(CERT *c)
212 for (i = 0; i < SSL_PKEY_NUM; i++) {
213 CERT_PKEY *cpk = c->pkeys + i;
214 X509_free(cpk->x509);
216 EVP_PKEY_free(cpk->privatekey);
217 cpk->privatekey = NULL;
218 sk_X509_pop_free(cpk->chain, X509_free);
220 OPENSSL_free(cpk->serverinfo);
221 cpk->serverinfo = NULL;
222 cpk->serverinfo_length = 0;
226 void ssl_cert_free(CERT *c)
232 CRYPTO_DOWN_REF(&c->references, &i, c->lock);
233 REF_PRINT_COUNT("CERT", c);
236 REF_ASSERT_ISNT(i < 0);
238 #ifndef OPENSSL_NO_DH
239 EVP_PKEY_free(c->dh_tmp);
242 ssl_cert_clear_certs(c);
243 OPENSSL_free(c->conf_sigalgs);
244 OPENSSL_free(c->client_sigalgs);
245 OPENSSL_free(c->ctype);
246 X509_STORE_free(c->verify_store);
247 X509_STORE_free(c->chain_store);
248 custom_exts_free(&c->custext);
249 #ifndef OPENSSL_NO_PSK
250 OPENSSL_free(c->psk_identity_hint);
252 CRYPTO_THREAD_lock_free(c->lock);
256 int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
259 CERT_PKEY *cpk = s != NULL ? s->cert->key : ctx->cert->key;
260 SSL_CTX *realctx = s != NULL ? s->ctx : ctx;
264 for (i = 0; i < sk_X509_num(chain); i++) {
265 X509 *x = sk_X509_value(chain, i);
267 if (!X509v3_cache_extensions(x, realctx->libctx, realctx->propq)) {
268 SSLerr(0, ERR_LIB_X509);
272 r = ssl_security_cert(s, ctx, x, 0, 0);
274 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r);
278 sk_X509_pop_free(cpk->chain, X509_free);
283 int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
285 STACK_OF(X509) *dchain;
287 return ssl_cert_set0_chain(s, ctx, NULL);
288 dchain = X509_chain_up_ref(chain);
291 if (!ssl_cert_set0_chain(s, ctx, dchain)) {
292 sk_X509_pop_free(dchain, X509_free);
298 int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
301 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
304 r = ssl_security_cert(s, ctx, x, 0, 0);
306 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r);
310 cpk->chain = sk_X509_new_null();
311 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
316 int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
318 if (!ssl_cert_add0_chain_cert(s, ctx, x))
324 int ssl_cert_select_current(CERT *c, X509 *x)
329 for (i = 0; i < SSL_PKEY_NUM; i++) {
330 CERT_PKEY *cpk = c->pkeys + i;
331 if (cpk->x509 == x && cpk->privatekey) {
337 for (i = 0; i < SSL_PKEY_NUM; i++) {
338 CERT_PKEY *cpk = c->pkeys + i;
339 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
347 int ssl_cert_set_current(CERT *c, long op)
352 if (op == SSL_CERT_SET_FIRST)
354 else if (op == SSL_CERT_SET_NEXT) {
355 idx = (int)(c->key - c->pkeys + 1);
356 if (idx >= SSL_PKEY_NUM)
360 for (i = idx; i < SSL_PKEY_NUM; i++) {
361 CERT_PKEY *cpk = c->pkeys + i;
362 if (cpk->x509 && cpk->privatekey) {
370 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
373 c->cert_cb_arg = arg;
376 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
380 X509_STORE *verify_store;
381 X509_STORE_CTX *ctx = NULL;
382 X509_VERIFY_PARAM *param;
384 if ((sk == NULL) || (sk_X509_num(sk) == 0))
387 if (s->cert->verify_store)
388 verify_store = s->cert->verify_store;
390 verify_store = s->ctx->cert_store;
392 ctx = X509_STORE_CTX_new_with_libctx(s->ctx->libctx, s->ctx->propq);
394 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
398 x = sk_X509_value(sk, 0);
399 if (!X509_STORE_CTX_init(ctx, verify_store, x, sk)) {
400 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
403 param = X509_STORE_CTX_get0_param(ctx);
405 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
406 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
407 * and PKI authentication.
409 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s));
411 /* Set suite B flags if needed */
412 X509_STORE_CTX_set_flags(ctx, tls1_suiteb(s));
413 if (!X509_STORE_CTX_set_ex_data
414 (ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s)) {
418 /* Verify via DANE if enabled */
419 if (DANETLS_ENABLED(&s->dane))
420 X509_STORE_CTX_set0_dane(ctx, &s->dane);
423 * We need to inherit the verify parameters. These can be determined by
424 * the context: if its a server it will verify SSL client certificates or
428 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server");
430 * Anything non-default in "s->param" should overwrite anything in the ctx.
432 X509_VERIFY_PARAM_set1(param, s->param);
434 if (s->verify_callback)
435 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback);
437 if (s->ctx->app_verify_callback != NULL)
438 i = s->ctx->app_verify_callback(ctx, s->ctx->app_verify_arg);
440 i = X509_verify_cert(ctx);
442 s->verify_result = X509_STORE_CTX_get_error(ctx);
443 sk_X509_pop_free(s->verified_chain, X509_free);
444 s->verified_chain = NULL;
445 if (X509_STORE_CTX_get0_chain(ctx) != NULL) {
446 s->verified_chain = X509_STORE_CTX_get1_chain(ctx);
447 if (s->verified_chain == NULL) {
448 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
453 /* Move peername from the store context params to the SSL handle's */
454 X509_VERIFY_PARAM_move_peername(s->param, param);
457 X509_STORE_CTX_free(ctx);
461 static void set0_CA_list(STACK_OF(X509_NAME) **ca_list,
462 STACK_OF(X509_NAME) *name_list)
464 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
465 *ca_list = name_list;
468 STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk)
471 const int num = sk_X509_NAME_num(sk);
472 STACK_OF(X509_NAME) *ret;
475 ret = sk_X509_NAME_new_reserve(NULL, num);
477 SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
480 for (i = 0; i < num; i++) {
481 name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
483 SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
484 sk_X509_NAME_pop_free(ret, X509_NAME_free);
487 sk_X509_NAME_push(ret, name); /* Cannot fail after reserve call */
492 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
494 set0_CA_list(&s->ca_names, name_list);
497 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
499 set0_CA_list(&ctx->ca_names, name_list);
502 const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx)
504 return ctx->ca_names;
507 const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s)
509 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
512 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
514 set0_CA_list(&ctx->client_ca_names, name_list);
517 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
519 return ctx->client_ca_names;
522 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
524 set0_CA_list(&s->client_ca_names, name_list);
527 const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s)
529 return s->s3.tmp.peer_ca_names;
532 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
535 return s->s3.tmp.peer_ca_names;
536 return s->client_ca_names != NULL ? s->client_ca_names
537 : s->ctx->client_ca_names;
540 static int add_ca_name(STACK_OF(X509_NAME) **sk, const X509 *x)
546 if (*sk == NULL && ((*sk = sk_X509_NAME_new_null()) == NULL))
549 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
552 if (!sk_X509_NAME_push(*sk, name)) {
553 X509_NAME_free(name);
559 int SSL_add1_to_CA_list(SSL *ssl, const X509 *x)
561 return add_ca_name(&ssl->ca_names, x);
564 int SSL_CTX_add1_to_CA_list(SSL_CTX *ctx, const X509 *x)
566 return add_ca_name(&ctx->ca_names, x);
570 * The following two are older names are to be replaced with
571 * SSL(_CTX)_add1_to_CA_list
573 int SSL_add_client_CA(SSL *ssl, X509 *x)
575 return add_ca_name(&ssl->client_ca_names, x);
578 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
580 return add_ca_name(&ctx->client_ca_names, x);
583 static int xname_cmp(const X509_NAME *a, const X509_NAME *b)
585 unsigned char *abuf = NULL, *bbuf = NULL;
588 /* X509_NAME_cmp() itself casts away constness in this way, so
591 alen = i2d_X509_NAME((X509_NAME *)a, &abuf);
592 blen = i2d_X509_NAME((X509_NAME *)b, &bbuf);
594 if (alen < 0 || blen < 0)
596 else if (alen != blen)
598 else /* alen == blen */
599 ret = memcmp(abuf, bbuf, alen);
607 static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
609 return xname_cmp(*a, *b);
612 static unsigned long xname_hash(const X509_NAME *a)
614 return X509_NAME_hash((X509_NAME *)a);
617 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
619 BIO *in = BIO_new(BIO_s_file());
621 X509_NAME *xn = NULL;
622 STACK_OF(X509_NAME) *ret = NULL;
623 LHASH_OF(X509_NAME) *name_hash = lh_X509_NAME_new(xname_hash, xname_cmp);
625 if ((name_hash == NULL) || (in == NULL)) {
626 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
630 if (!BIO_read_filename(in, file))
634 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
637 ret = sk_X509_NAME_new_null();
639 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
643 if ((xn = X509_get_subject_name(x)) == NULL)
645 /* check for duplicates */
646 xn = X509_NAME_dup(xn);
649 if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) {
654 lh_X509_NAME_insert(name_hash, xn);
655 if (!sk_X509_NAME_push(ret, xn))
663 sk_X509_NAME_pop_free(ret, X509_NAME_free);
668 lh_X509_NAME_free(name_hash);
674 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
679 X509_NAME *xn = NULL;
681 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
683 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
685 in = BIO_new(BIO_s_file());
688 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, ERR_R_MALLOC_FAILURE);
692 if (!BIO_read_filename(in, file))
696 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
698 if ((xn = X509_get_subject_name(x)) == NULL)
700 xn = X509_NAME_dup(xn);
703 if (sk_X509_NAME_find(stack, xn) >= 0) {
706 } else if (!sk_X509_NAME_push(stack, xn)) {
720 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
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 ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),
755 "calling OPENSSL_dir_read(%s)",
757 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
770 static int add_uris_recursive(STACK_OF(X509_NAME) *stack,
771 const char *uri, int depth)
774 OSSL_STORE_CTX *ctx = NULL;
776 X509_NAME *xn = NULL;
778 if ((ctx = OSSL_STORE_open(uri, NULL, NULL, NULL, NULL)) == NULL)
781 while (!OSSL_STORE_eof(ctx) && !OSSL_STORE_error(ctx)) {
782 OSSL_STORE_INFO *info = OSSL_STORE_load(ctx);
783 int infotype = info == 0 ? 0 : OSSL_STORE_INFO_get_type(info);
788 if (infotype == OSSL_STORE_INFO_NAME) {
790 * This is an entry in the "directory" represented by the current
791 * uri. if |depth| allows, dive into it.
794 ok = add_uris_recursive(stack, OSSL_STORE_INFO_get0_NAME(info),
796 } else if (infotype == OSSL_STORE_INFO_CERT) {
797 if ((x = OSSL_STORE_INFO_get0_CERT(info)) == NULL
798 || (xn = X509_get_subject_name(x)) == NULL
799 || (xn = X509_NAME_dup(xn)) == NULL)
801 if (sk_X509_NAME_find(stack, xn) >= 0) {
804 } else if (!sk_X509_NAME_push(stack, xn)) {
810 OSSL_STORE_INFO_free(info);
819 OSSL_STORE_close(ctx);
824 int SSL_add_store_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
827 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b)
828 = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
829 int ret = add_uris_recursive(stack, store, 1);
831 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
835 /* Build a certificate chain for current certificate */
836 int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags)
838 CERT *c = s ? s->cert : ctx->cert;
839 CERT_PKEY *cpk = c->key;
840 X509_STORE *chain_store = NULL;
841 X509_STORE_CTX *xs_ctx = NULL;
842 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
847 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
850 /* Rearranging and check the chain: add everything to a store */
851 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
852 chain_store = X509_STORE_new();
853 if (chain_store == NULL)
855 for (i = 0; i < sk_X509_num(cpk->chain); i++) {
856 x = sk_X509_value(cpk->chain, i);
857 if (!X509_STORE_add_cert(chain_store, x))
860 /* Add EE cert too: it might be self signed */
861 if (!X509_STORE_add_cert(chain_store, cpk->x509))
865 chain_store = c->chain_store;
867 chain_store = s->ctx->cert_store;
869 chain_store = ctx->cert_store;
871 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
872 untrusted = cpk->chain;
876 xs_ctx = X509_STORE_CTX_new_with_libctx(ctx->libctx, ctx->propq);
878 xs_ctx = X509_STORE_CTX_new_with_libctx(s->ctx->libctx, s->ctx->propq);
879 if (xs_ctx == NULL) {
880 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
883 if (!X509_STORE_CTX_init(xs_ctx, chain_store, cpk->x509, untrusted)) {
884 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
887 /* Set suite B flags if needed */
888 X509_STORE_CTX_set_flags(xs_ctx,
889 c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
891 i = X509_verify_cert(xs_ctx);
892 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
893 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
899 chain = X509_STORE_CTX_get1_chain(xs_ctx);
901 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
902 i = X509_STORE_CTX_get_error(xs_ctx);
903 ERR_add_error_data(2, "Verify error:",
904 X509_verify_cert_error_string(i));
908 /* Remove EE certificate from chain */
909 x = sk_X509_shift(chain);
911 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
912 if (sk_X509_num(chain) > 0) {
913 /* See if last cert is self signed */
914 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
915 if (X509_get_extension_flags(x) & EXFLAG_SS) {
916 x = sk_X509_pop(chain);
922 * Check security level of all CA certificates: EE will have been checked
925 for (i = 0; i < sk_X509_num(chain); i++) {
926 x = sk_X509_value(chain, i);
927 rv = ssl_security_cert(s, ctx, x, 0, 0);
929 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv);
930 sk_X509_pop_free(chain, X509_free);
935 sk_X509_pop_free(cpk->chain, X509_free);
940 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
941 X509_STORE_free(chain_store);
942 X509_STORE_CTX_free(xs_ctx);
947 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
951 pstore = &c->chain_store;
953 pstore = &c->verify_store;
954 X509_STORE_free(*pstore);
957 X509_STORE_up_ref(store);
961 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
962 int op, int bits, int nid, void *other,
966 static const int minbits_table[5] = { 80, 112, 128, 192, 256 };
968 level = SSL_CTX_get_security_level(ctx);
970 level = SSL_get_security_level(s);
974 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
977 if (op == SSL_SECOP_TMP_DH && bits < 80)
983 minbits = minbits_table[level - 1];
985 case SSL_SECOP_CIPHER_SUPPORTED:
986 case SSL_SECOP_CIPHER_SHARED:
987 case SSL_SECOP_CIPHER_CHECK:
989 const SSL_CIPHER *c = other;
990 /* No ciphers below security level */
993 /* No unauthenticated ciphersuites */
994 if (c->algorithm_auth & SSL_aNULL)
996 /* No MD5 mac ciphersuites */
997 if (c->algorithm_mac & SSL_MD5)
999 /* SHA1 HMAC is 160 bits of security */
1000 if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
1002 /* Level 2: no RC4 */
1003 if (level >= 2 && c->algorithm_enc == SSL_RC4)
1005 /* Level 3: forward secure ciphersuites only */
1006 if (level >= 3 && c->min_tls != TLS1_3_VERSION &&
1007 !(c->algorithm_mkey & (SSL_kEDH | SSL_kEECDH)))
1011 case SSL_SECOP_VERSION:
1012 if (!SSL_IS_DTLS(s)) {
1013 /* SSLv3 not allowed at level 2 */
1014 if (nid <= SSL3_VERSION && level >= 2)
1016 /* TLS v1.1 and above only for level 3 */
1017 if (nid <= TLS1_VERSION && level >= 3)
1019 /* TLS v1.2 only for level 4 and above */
1020 if (nid <= TLS1_1_VERSION && level >= 4)
1023 /* DTLS v1.2 only for level 4 and above */
1024 if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level >= 4)
1029 case SSL_SECOP_COMPRESSION:
1033 case SSL_SECOP_TICKET:
1044 int ssl_security(const SSL *s, int op, int bits, int nid, void *other)
1046 return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex);
1049 int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other)
1051 return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other,
1055 int ssl_cert_lookup_by_nid(int nid, size_t *pidx)
1059 for (i = 0; i < OSSL_NELEM(ssl_cert_info); i++) {
1060 if (ssl_cert_info[i].nid == nid) {
1069 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, size_t *pidx)
1071 int nid = EVP_PKEY_id(pk);
1074 if (nid == NID_undef)
1077 if (!ssl_cert_lookup_by_nid(nid, &tmpidx))
1083 return &ssl_cert_info[tmpidx];
1086 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx)
1088 if (idx >= OSSL_NELEM(ssl_cert_info))
1090 return &ssl_cert_info[idx];