2 * Copyright 1995-2022 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"
27 #ifndef OPENSSL_NO_POSIX_IO
28 # include <sys/stat.h>
35 # define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR)
38 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
39 int op, int bits, int nid, void *other,
42 static CRYPTO_ONCE ssl_x509_store_ctx_once = CRYPTO_ONCE_STATIC_INIT;
43 static volatile int ssl_x509_store_ctx_idx = -1;
45 DEFINE_RUN_ONCE_STATIC(ssl_x509_store_ctx_init)
47 ssl_x509_store_ctx_idx = X509_STORE_CTX_get_ex_new_index(0,
48 "SSL for verify callback",
50 return ssl_x509_store_ctx_idx >= 0;
53 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
56 if (!RUN_ONCE(&ssl_x509_store_ctx_once, ssl_x509_store_ctx_init))
58 return ssl_x509_store_ctx_idx;
61 CERT *ssl_cert_new(size_t ssl_pkey_num)
65 /* Should never happen */
66 if (!ossl_assert(ssl_pkey_num >= SSL_PKEY_NUM))
69 ret = OPENSSL_zalloc(sizeof(*ret));
73 ret->ssl_pkey_num = ssl_pkey_num;
74 ret->pkeys = OPENSSL_zalloc(ret->ssl_pkey_num * sizeof(CERT_PKEY));
75 if (ret->pkeys == NULL) {
80 ret->key = &(ret->pkeys[SSL_PKEY_RSA]);
82 ret->sec_cb = ssl_security_default_callback;
83 ret->sec_level = OPENSSL_TLS_SECURITY_LEVEL;
85 ret->lock = CRYPTO_THREAD_lock_new();
86 if (ret->lock == NULL) {
87 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
88 OPENSSL_free(ret->pkeys);
96 CERT *ssl_cert_dup(CERT *cert)
98 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
100 #ifndef OPENSSL_NO_COMP_ALG
107 ret->ssl_pkey_num = cert->ssl_pkey_num;
108 ret->pkeys = OPENSSL_zalloc(ret->ssl_pkey_num * sizeof(CERT_PKEY));
109 if (ret->pkeys == NULL)
113 ret->key = &ret->pkeys[cert->key - cert->pkeys];
114 ret->lock = CRYPTO_THREAD_lock_new();
115 if (ret->lock == NULL) {
116 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
121 if (cert->dh_tmp != NULL) {
122 ret->dh_tmp = cert->dh_tmp;
123 EVP_PKEY_up_ref(ret->dh_tmp);
126 ret->dh_tmp_cb = cert->dh_tmp_cb;
127 ret->dh_tmp_auto = cert->dh_tmp_auto;
129 for (i = 0; i < ret->ssl_pkey_num; i++) {
130 CERT_PKEY *cpk = cert->pkeys + i;
131 CERT_PKEY *rpk = ret->pkeys + i;
133 if (cpk->x509 != NULL) {
134 rpk->x509 = cpk->x509;
135 X509_up_ref(rpk->x509);
138 if (cpk->privatekey != NULL) {
139 rpk->privatekey = cpk->privatekey;
140 EVP_PKEY_up_ref(cpk->privatekey);
144 rpk->chain = X509_chain_up_ref(cpk->chain);
146 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
150 if (cpk->serverinfo != NULL) {
151 /* Just copy everything. */
152 rpk->serverinfo = OPENSSL_memdup(cpk->serverinfo, cpk->serverinfo_length);
153 if (rpk->serverinfo == NULL)
155 rpk->serverinfo_length = cpk->serverinfo_length;
157 #ifndef OPENSSL_NO_COMP_ALG
158 for (j = TLSEXT_comp_cert_none; j < TLSEXT_comp_cert_limit; j++) {
159 if (cpk->comp_cert[j] != NULL) {
160 if (!OSSL_COMP_CERT_up_ref(cpk->comp_cert[j]))
162 rpk->comp_cert[j] = cpk->comp_cert[j];
168 /* Configured sigalgs copied across */
169 if (cert->conf_sigalgs) {
170 ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen
171 * sizeof(*cert->conf_sigalgs));
172 if (ret->conf_sigalgs == NULL)
174 memcpy(ret->conf_sigalgs, cert->conf_sigalgs,
175 cert->conf_sigalgslen * sizeof(*cert->conf_sigalgs));
176 ret->conf_sigalgslen = cert->conf_sigalgslen;
178 ret->conf_sigalgs = NULL;
180 if (cert->client_sigalgs) {
181 ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen
182 * sizeof(*cert->client_sigalgs));
183 if (ret->client_sigalgs == NULL)
185 memcpy(ret->client_sigalgs, cert->client_sigalgs,
186 cert->client_sigalgslen * sizeof(*cert->client_sigalgs));
187 ret->client_sigalgslen = cert->client_sigalgslen;
189 ret->client_sigalgs = NULL;
190 /* Copy any custom client certificate types */
192 ret->ctype = OPENSSL_memdup(cert->ctype, cert->ctype_len);
193 if (ret->ctype == NULL)
195 ret->ctype_len = cert->ctype_len;
198 ret->cert_flags = cert->cert_flags;
200 ret->cert_cb = cert->cert_cb;
201 ret->cert_cb_arg = cert->cert_cb_arg;
203 if (cert->verify_store) {
204 X509_STORE_up_ref(cert->verify_store);
205 ret->verify_store = cert->verify_store;
208 if (cert->chain_store) {
209 X509_STORE_up_ref(cert->chain_store);
210 ret->chain_store = cert->chain_store;
213 ret->sec_cb = cert->sec_cb;
214 ret->sec_level = cert->sec_level;
215 ret->sec_ex = cert->sec_ex;
217 if (!custom_exts_copy(&ret->custext, &cert->custext))
219 #ifndef OPENSSL_NO_PSK
220 if (cert->psk_identity_hint) {
221 ret->psk_identity_hint = OPENSSL_strdup(cert->psk_identity_hint);
222 if (ret->psk_identity_hint == NULL)
234 /* Free up and clear all certificates and chains */
236 void ssl_cert_clear_certs(CERT *c)
239 #ifndef OPENSSL_NO_COMP_ALG
245 for (i = 0; i < c->ssl_pkey_num; i++) {
246 CERT_PKEY *cpk = c->pkeys + i;
247 X509_free(cpk->x509);
249 EVP_PKEY_free(cpk->privatekey);
250 cpk->privatekey = NULL;
251 OSSL_STACK_OF_X509_free(cpk->chain);
253 OPENSSL_free(cpk->serverinfo);
254 cpk->serverinfo = NULL;
255 cpk->serverinfo_length = 0;
256 #ifndef OPENSSL_NO_COMP_ALG
257 for (j = 0; j < TLSEXT_comp_cert_limit; j++) {
258 OSSL_COMP_CERT_free(cpk->comp_cert[j]);
259 cpk->comp_cert[j] = NULL;
260 cpk->cert_comp_used = 0;
266 void ssl_cert_free(CERT *c)
272 CRYPTO_DOWN_REF(&c->references, &i, c->lock);
273 REF_PRINT_COUNT("CERT", c);
276 REF_ASSERT_ISNT(i < 0);
278 EVP_PKEY_free(c->dh_tmp);
280 ssl_cert_clear_certs(c);
281 OPENSSL_free(c->conf_sigalgs);
282 OPENSSL_free(c->client_sigalgs);
283 OPENSSL_free(c->ctype);
284 X509_STORE_free(c->verify_store);
285 X509_STORE_free(c->chain_store);
286 custom_exts_free(&c->custext);
287 #ifndef OPENSSL_NO_PSK
288 OPENSSL_free(c->psk_identity_hint);
290 OPENSSL_free(c->pkeys);
291 CRYPTO_THREAD_lock_free(c->lock);
295 int ssl_cert_set0_chain(SSL_CONNECTION *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
298 CERT_PKEY *cpk = s != NULL ? s->cert->key : ctx->cert->key;
302 for (i = 0; i < sk_X509_num(chain); i++) {
303 X509 *x = sk_X509_value(chain, i);
305 r = ssl_security_cert(s, ctx, x, 0, 0);
307 ERR_raise(ERR_LIB_SSL, r);
311 OSSL_STACK_OF_X509_free(cpk->chain);
316 int ssl_cert_set1_chain(SSL_CONNECTION *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
318 STACK_OF(X509) *dchain;
321 return ssl_cert_set0_chain(s, ctx, NULL);
322 dchain = X509_chain_up_ref(chain);
325 if (!ssl_cert_set0_chain(s, ctx, dchain)) {
326 OSSL_STACK_OF_X509_free(dchain);
332 int ssl_cert_add0_chain_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x)
335 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
339 r = ssl_security_cert(s, ctx, x, 0, 0);
341 ERR_raise(ERR_LIB_SSL, r);
345 cpk->chain = sk_X509_new_null();
346 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
351 int ssl_cert_add1_chain_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x)
353 if (!ssl_cert_add0_chain_cert(s, ctx, x))
359 int ssl_cert_select_current(CERT *c, X509 *x)
365 for (i = 0; i < c->ssl_pkey_num; i++) {
366 CERT_PKEY *cpk = c->pkeys + i;
367 if (cpk->x509 == x && cpk->privatekey) {
373 for (i = 0; i < c->ssl_pkey_num; i++) {
374 CERT_PKEY *cpk = c->pkeys + i;
375 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
383 int ssl_cert_set_current(CERT *c, long op)
389 if (op == SSL_CERT_SET_FIRST)
391 else if (op == SSL_CERT_SET_NEXT) {
392 idx = (size_t)(c->key - c->pkeys + 1);
393 if (idx >= c->ssl_pkey_num)
397 for (i = idx; i < c->ssl_pkey_num; i++) {
398 CERT_PKEY *cpk = c->pkeys + i;
399 if (cpk->x509 && cpk->privatekey) {
407 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
410 c->cert_cb_arg = arg;
414 * Verify a certificate chain
417 * 0: Verify failure or error
420 int ssl_verify_cert_chain(SSL_CONNECTION *s, STACK_OF(X509) *sk)
424 X509_STORE *verify_store;
425 X509_STORE_CTX *ctx = NULL;
426 X509_VERIFY_PARAM *param;
429 if ((sk == NULL) || (sk_X509_num(sk) == 0))
432 sctx = SSL_CONNECTION_GET_CTX(s);
433 if (s->cert->verify_store)
434 verify_store = s->cert->verify_store;
436 verify_store = sctx->cert_store;
438 ctx = X509_STORE_CTX_new_ex(sctx->libctx, sctx->propq);
440 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
444 x = sk_X509_value(sk, 0);
445 if (!X509_STORE_CTX_init(ctx, verify_store, x, sk)) {
446 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
449 param = X509_STORE_CTX_get0_param(ctx);
451 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
452 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
453 * and PKI authentication.
455 X509_VERIFY_PARAM_set_auth_level(param,
456 SSL_get_security_level(SSL_CONNECTION_GET_SSL(s)));
458 /* Set suite B flags if needed */
459 X509_STORE_CTX_set_flags(ctx, tls1_suiteb(s));
460 if (!X509_STORE_CTX_set_ex_data(ctx,
461 SSL_get_ex_data_X509_STORE_CTX_idx(), s)) {
465 /* Verify via DANE if enabled */
466 if (DANETLS_ENABLED(&s->dane))
467 X509_STORE_CTX_set0_dane(ctx, &s->dane);
470 * We need to inherit the verify parameters. These can be determined by
471 * the context: if its a server it will verify SSL client certificates or
475 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server");
477 * Anything non-default in "s->param" should overwrite anything in the ctx.
479 X509_VERIFY_PARAM_set1(param, s->param);
481 if (s->verify_callback)
482 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback);
484 if (sctx->app_verify_callback != NULL) {
485 i = sctx->app_verify_callback(ctx, sctx->app_verify_arg);
487 i = X509_verify_cert(ctx);
488 /* We treat an error in the same way as a failure to verify */
493 s->verify_result = X509_STORE_CTX_get_error(ctx);
494 OSSL_STACK_OF_X509_free(s->verified_chain);
495 s->verified_chain = NULL;
496 if (X509_STORE_CTX_get0_chain(ctx) != NULL) {
497 s->verified_chain = X509_STORE_CTX_get1_chain(ctx);
498 if (s->verified_chain == NULL) {
499 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
504 /* Move peername from the store context params to the SSL handle's */
505 X509_VERIFY_PARAM_move_peername(s->param, param);
508 X509_STORE_CTX_free(ctx);
512 static void set0_CA_list(STACK_OF(X509_NAME) **ca_list,
513 STACK_OF(X509_NAME) *name_list)
515 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
516 *ca_list = name_list;
519 STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk)
522 const int num = sk_X509_NAME_num(sk);
523 STACK_OF(X509_NAME) *ret;
526 ret = sk_X509_NAME_new_reserve(NULL, num);
528 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
531 for (i = 0; i < num; i++) {
532 name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
534 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
535 sk_X509_NAME_pop_free(ret, X509_NAME_free);
538 sk_X509_NAME_push(ret, name); /* Cannot fail after reserve call */
543 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
545 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
550 set0_CA_list(&sc->ca_names, name_list);
553 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
555 set0_CA_list(&ctx->ca_names, name_list);
558 const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx)
560 return ctx->ca_names;
563 const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s)
565 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
570 return sc->ca_names != NULL ? sc->ca_names : s->ctx->ca_names;
573 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
575 set0_CA_list(&ctx->client_ca_names, name_list);
578 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
580 return ctx->client_ca_names;
583 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
585 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
590 set0_CA_list(&sc->client_ca_names, name_list);
593 const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s)
595 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
600 return sc->s3.tmp.peer_ca_names;
603 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
605 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
611 return sc->s3.tmp.peer_ca_names;
612 return sc->client_ca_names != NULL ? sc->client_ca_names
613 : s->ctx->client_ca_names;
616 static int add_ca_name(STACK_OF(X509_NAME) **sk, const X509 *x)
622 if (*sk == NULL && ((*sk = sk_X509_NAME_new_null()) == NULL))
625 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
628 if (!sk_X509_NAME_push(*sk, name)) {
629 X509_NAME_free(name);
635 int SSL_add1_to_CA_list(SSL *ssl, const X509 *x)
637 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
642 return add_ca_name(&sc->ca_names, x);
645 int SSL_CTX_add1_to_CA_list(SSL_CTX *ctx, const X509 *x)
647 return add_ca_name(&ctx->ca_names, x);
651 * The following two are older names are to be replaced with
652 * SSL(_CTX)_add1_to_CA_list
654 int SSL_add_client_CA(SSL *ssl, X509 *x)
656 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
661 return add_ca_name(&sc->client_ca_names, x);
664 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
666 return add_ca_name(&ctx->client_ca_names, x);
669 static int xname_cmp(const X509_NAME *a, const X509_NAME *b)
671 unsigned char *abuf = NULL, *bbuf = NULL;
674 /* X509_NAME_cmp() itself casts away constness in this way, so
677 alen = i2d_X509_NAME((X509_NAME *)a, &abuf);
678 blen = i2d_X509_NAME((X509_NAME *)b, &bbuf);
680 if (alen < 0 || blen < 0)
682 else if (alen != blen)
684 else /* alen == blen */
685 ret = memcmp(abuf, bbuf, alen);
693 static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
695 return xname_cmp(*a, *b);
698 static unsigned long xname_hash(const X509_NAME *a)
700 /* This returns 0 also if SHA1 is not available */
701 return X509_NAME_hash_ex((X509_NAME *)a, NULL, NULL, NULL);
704 STACK_OF(X509_NAME) *SSL_load_client_CA_file_ex(const char *file,
705 OSSL_LIB_CTX *libctx,
708 BIO *in = BIO_new(BIO_s_file());
710 X509_NAME *xn = NULL;
711 STACK_OF(X509_NAME) *ret = NULL;
712 LHASH_OF(X509_NAME) *name_hash = lh_X509_NAME_new(xname_hash, xname_cmp);
713 OSSL_LIB_CTX *prev_libctx = NULL;
715 if (name_hash == NULL) {
716 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
720 ERR_raise(ERR_LIB_SSL, ERR_R_BIO_LIB);
724 x = X509_new_ex(libctx, propq);
726 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
729 if (BIO_read_filename(in, file) <= 0)
732 /* Internally lh_X509_NAME_retrieve() needs the libctx to retrieve SHA1 */
733 prev_libctx = OSSL_LIB_CTX_set0_default(libctx);
735 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
738 ret = sk_X509_NAME_new_null();
740 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
744 if ((xn = X509_get_subject_name(x)) == NULL)
746 /* check for duplicates */
747 xn = X509_NAME_dup(xn);
750 if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) {
755 lh_X509_NAME_insert(name_hash, xn);
756 if (!sk_X509_NAME_push(ret, xn))
764 sk_X509_NAME_pop_free(ret, X509_NAME_free);
767 /* restore the old libctx */
768 OSSL_LIB_CTX_set0_default(prev_libctx);
771 lh_X509_NAME_free(name_hash);
777 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
779 return SSL_load_client_CA_file_ex(file, NULL, NULL);
782 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
787 X509_NAME *xn = NULL;
789 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
791 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
793 in = BIO_new(BIO_s_file());
796 ERR_raise(ERR_LIB_SSL, ERR_R_BIO_LIB);
800 if (BIO_read_filename(in, file) <= 0)
804 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
806 if ((xn = X509_get_subject_name(x)) == NULL)
808 xn = X509_NAME_dup(xn);
811 if (sk_X509_NAME_find(stack, xn) >= 0) {
814 } else if (!sk_X509_NAME_push(stack, xn)) {
828 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
832 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
835 OPENSSL_DIR_CTX *d = NULL;
836 const char *filename;
839 /* Note that a side effect is that the CAs will be sorted by name */
841 while ((filename = OPENSSL_DIR_read(&d, dir))) {
846 if (strlen(dir) + strlen(filename) + 2 > sizeof(buf)) {
847 ERR_raise(ERR_LIB_SSL, SSL_R_PATH_TOO_LONG);
850 #ifdef OPENSSL_SYS_VMS
851 r = BIO_snprintf(buf, sizeof(buf), "%s%s", dir, filename);
853 r = BIO_snprintf(buf, sizeof(buf), "%s/%s", dir, filename);
855 /* Skip subdirectories */
856 if (!stat(buf, &st) && S_ISDIR(st.st_mode))
858 if (r <= 0 || r >= (int)sizeof(buf))
860 if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
865 ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),
866 "calling OPENSSL_dir_read(%s)", dir);
867 ERR_raise(ERR_LIB_SSL, ERR_R_SYS_LIB);
880 static int add_uris_recursive(STACK_OF(X509_NAME) *stack,
881 const char *uri, int depth)
884 OSSL_STORE_CTX *ctx = NULL;
886 X509_NAME *xn = NULL;
888 if ((ctx = OSSL_STORE_open(uri, NULL, NULL, NULL, NULL)) == NULL)
891 while (!OSSL_STORE_eof(ctx) && !OSSL_STORE_error(ctx)) {
892 OSSL_STORE_INFO *info = OSSL_STORE_load(ctx);
893 int infotype = info == 0 ? 0 : OSSL_STORE_INFO_get_type(info);
898 if (infotype == OSSL_STORE_INFO_NAME) {
900 * This is an entry in the "directory" represented by the current
901 * uri. if |depth| allows, dive into it.
904 ok = add_uris_recursive(stack, OSSL_STORE_INFO_get0_NAME(info),
906 } else if (infotype == OSSL_STORE_INFO_CERT) {
907 if ((x = OSSL_STORE_INFO_get0_CERT(info)) == NULL
908 || (xn = X509_get_subject_name(x)) == NULL
909 || (xn = X509_NAME_dup(xn)) == NULL)
911 if (sk_X509_NAME_find(stack, xn) >= 0) {
914 } else if (!sk_X509_NAME_push(stack, xn)) {
920 OSSL_STORE_INFO_free(info);
929 OSSL_STORE_close(ctx);
934 int SSL_add_store_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
937 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b)
938 = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
939 int ret = add_uris_recursive(stack, store, 1);
941 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
945 /* Build a certificate chain for current certificate */
946 int ssl_build_cert_chain(SSL_CONNECTION *s, SSL_CTX *ctx, int flags)
948 CERT *c = s != NULL ? s->cert : ctx->cert;
949 CERT_PKEY *cpk = c->key;
950 X509_STORE *chain_store = NULL;
951 X509_STORE_CTX *xs_ctx = NULL;
952 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
954 SSL_CTX *real_ctx = (s == NULL) ? ctx : SSL_CONNECTION_GET_CTX(s);
957 if (cpk->x509 == NULL) {
958 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_SET);
961 /* Rearranging and check the chain: add everything to a store */
962 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
963 chain_store = X509_STORE_new();
964 if (chain_store == NULL)
966 for (i = 0; i < sk_X509_num(cpk->chain); i++) {
967 x = sk_X509_value(cpk->chain, i);
968 if (!X509_STORE_add_cert(chain_store, x))
971 /* Add EE cert too: it might be self signed */
972 if (!X509_STORE_add_cert(chain_store, cpk->x509))
975 if (c->chain_store != NULL)
976 chain_store = c->chain_store;
978 chain_store = real_ctx->cert_store;
980 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
981 untrusted = cpk->chain;
984 xs_ctx = X509_STORE_CTX_new_ex(real_ctx->libctx, real_ctx->propq);
985 if (xs_ctx == NULL) {
986 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
989 if (!X509_STORE_CTX_init(xs_ctx, chain_store, cpk->x509, untrusted)) {
990 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
993 /* Set suite B flags if needed */
994 X509_STORE_CTX_set_flags(xs_ctx,
995 c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
997 i = X509_verify_cert(xs_ctx);
998 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
999 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
1005 chain = X509_STORE_CTX_get1_chain(xs_ctx);
1007 i = X509_STORE_CTX_get_error(xs_ctx);
1008 ERR_raise_data(ERR_LIB_SSL, SSL_R_CERTIFICATE_VERIFY_FAILED,
1009 "Verify error:%s", X509_verify_cert_error_string(i));
1013 /* Remove EE certificate from chain */
1014 x = sk_X509_shift(chain);
1016 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
1017 if (sk_X509_num(chain) > 0) {
1018 /* See if last cert is self signed */
1019 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
1020 if (X509_get_extension_flags(x) & EXFLAG_SS) {
1021 x = sk_X509_pop(chain);
1027 * Check security level of all CA certificates: EE will have been checked
1030 for (i = 0; i < sk_X509_num(chain); i++) {
1031 x = sk_X509_value(chain, i);
1032 rv = ssl_security_cert(s, ctx, x, 0, 0);
1034 ERR_raise(ERR_LIB_SSL, rv);
1035 OSSL_STACK_OF_X509_free(chain);
1040 OSSL_STACK_OF_X509_free(cpk->chain);
1045 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
1046 X509_STORE_free(chain_store);
1047 X509_STORE_CTX_free(xs_ctx);
1052 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
1054 X509_STORE **pstore;
1056 pstore = &c->chain_store;
1058 pstore = &c->verify_store;
1059 X509_STORE_free(*pstore);
1062 X509_STORE_up_ref(store);
1066 int ssl_cert_get_cert_store(CERT *c, X509_STORE **pstore, int chain)
1068 *pstore = (chain ? c->chain_store : c->verify_store);
1072 int ssl_get_security_level_bits(const SSL *s, const SSL_CTX *ctx, int *levelp)
1076 * note that there's a corresponding minbits_table
1077 * in crypto/x509/x509_vfy.c that's used for checking the security level
1078 * of RSA and DSA keys
1080 static const int minbits_table[5 + 1] = { 0, 80, 112, 128, 192, 256 };
1083 level = SSL_CTX_get_security_level(ctx);
1085 level = SSL_get_security_level(s);
1095 return minbits_table[level];
1098 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
1099 int op, int bits, int nid, void *other,
1102 int level, minbits, pfs_mask;
1103 const SSL_CONNECTION *sc;
1105 minbits = ssl_get_security_level_bits(s, ctx, &level);
1109 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
1112 if (op == SSL_SECOP_TMP_DH && bits < 80)
1117 case SSL_SECOP_CIPHER_SUPPORTED:
1118 case SSL_SECOP_CIPHER_SHARED:
1119 case SSL_SECOP_CIPHER_CHECK:
1121 const SSL_CIPHER *c = other;
1122 /* No ciphers below security level */
1125 /* No unauthenticated ciphersuites */
1126 if (c->algorithm_auth & SSL_aNULL)
1128 /* No MD5 mac ciphersuites */
1129 if (c->algorithm_mac & SSL_MD5)
1131 /* SHA1 HMAC is 160 bits of security */
1132 if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
1134 /* Level 3: forward secure ciphersuites only */
1135 pfs_mask = SSL_kDHE | SSL_kECDHE | SSL_kDHEPSK | SSL_kECDHEPSK;
1136 if (level >= 3 && c->min_tls != TLS1_3_VERSION &&
1137 !(c->algorithm_mkey & pfs_mask))
1141 case SSL_SECOP_VERSION:
1142 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(s)) == NULL)
1144 if (!SSL_CONNECTION_IS_DTLS(sc)) {
1145 /* SSLv3, TLS v1.0 and TLS v1.1 only allowed at level 0 */
1146 if (nid <= TLS1_1_VERSION && level > 0)
1149 /* DTLS v1.0 only allowed at level 0 */
1150 if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level > 0)
1155 case SSL_SECOP_COMPRESSION:
1159 case SSL_SECOP_TICKET:
1170 int ssl_security(const SSL_CONNECTION *s, int op, int bits, int nid, void *other)
1172 return s->cert->sec_cb(SSL_CONNECTION_GET_SSL(s), NULL, op, bits, nid,
1173 other, s->cert->sec_ex);
1176 int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other)
1178 return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other,
1182 int ssl_cert_lookup_by_nid(int nid, size_t *pidx, SSL_CTX *ctx)
1186 for (i = 0; i < OSSL_NELEM(ssl_cert_info); i++) {
1187 if (ssl_cert_info[i].nid == nid) {
1192 for (i = 0; i < ctx->sigalg_list_len; i++) {
1193 if (ctx->ssl_cert_info[i].nid == nid) {
1194 *pidx = SSL_PKEY_NUM + i;
1201 SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, size_t *pidx, SSL_CTX *ctx)
1205 /* check classic pk types */
1206 for (i = 0; i < OSSL_NELEM(ssl_cert_info); i++) {
1207 SSL_CERT_LOOKUP *tmp_lu = &ssl_cert_info[i];
1209 if (EVP_PKEY_is_a(pk, OBJ_nid2sn(tmp_lu->nid))
1210 || EVP_PKEY_is_a(pk, OBJ_nid2ln(tmp_lu->nid))) {
1216 /* check provider-loaded pk types */
1217 for (i = 0; ctx->sigalg_list_len; i++) {
1218 SSL_CERT_LOOKUP *tmp_lu = &(ctx->ssl_cert_info[i]);
1220 if (EVP_PKEY_is_a(pk, OBJ_nid2sn(tmp_lu->nid))
1221 || EVP_PKEY_is_a(pk, OBJ_nid2ln(tmp_lu->nid))) {
1223 *pidx = SSL_PKEY_NUM + i;
1224 return &ctx->ssl_cert_info[i];
1231 SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx, SSL_CTX *ctx)
1233 if (idx >= (OSSL_NELEM(ssl_cert_info) + ctx->sigalg_list_len))
1235 else if (idx >= (OSSL_NELEM(ssl_cert_info)))
1236 return &(ctx->ssl_cert_info[idx - SSL_PKEY_NUM]);
1237 return &ssl_cert_info[idx];