1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
57 /* ====================================================================
58 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * openssl-core@openssl.org.
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com).
110 /* ====================================================================
111 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
112 * ECC cipher suite support in OpenSSL originally developed by
113 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
119 #ifndef NO_SYS_TYPES_H
120 # include <sys/types.h>
123 #include "internal/o_dir.h"
124 #include <openssl/lhash.h>
125 #include <openssl/bio.h>
126 #include <openssl/pem.h>
127 #include <openssl/x509v3.h>
128 #include <openssl/dh.h>
129 #include <openssl/bn.h>
130 #include "internal/threads.h"
131 #include "ssl_locl.h"
133 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx, int op,
134 int bits, int nid, void *other,
137 static CRYPTO_ONCE ssl_x509_store_ctx_once = CRYPTO_ONCE_STATIC_INIT;
138 static volatile int ssl_x509_store_ctx_idx = -1;
140 static void ssl_x509_store_ctx_init(void)
142 ssl_x509_store_ctx_idx = X509_STORE_CTX_get_ex_new_index(0,
143 "SSL for verify callback",
147 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
150 CRYPTO_THREAD_run_once(&ssl_x509_store_ctx_once, ssl_x509_store_ctx_init);
151 return ssl_x509_store_ctx_idx;
154 CERT *ssl_cert_new(void)
156 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
159 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
163 ret->key = &(ret->pkeys[SSL_PKEY_RSA_ENC]);
165 ret->sec_cb = ssl_security_default_callback;
166 ret->sec_level = OPENSSL_TLS_SECURITY_LEVEL;
168 ret->lock = CRYPTO_THREAD_lock_new();
169 if (ret->lock == NULL) {
170 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
178 CERT *ssl_cert_dup(CERT *cert)
180 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
184 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
189 ret->key = &ret->pkeys[cert->key - cert->pkeys];
190 ret->lock = CRYPTO_THREAD_lock_new();
191 if (ret->lock == NULL) {
192 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
197 #ifndef OPENSSL_NO_DH
198 if (cert->dh_tmp != NULL) {
199 ret->dh_tmp = cert->dh_tmp;
200 EVP_PKEY_up_ref(ret->dh_tmp);
202 ret->dh_tmp_cb = cert->dh_tmp_cb;
203 ret->dh_tmp_auto = cert->dh_tmp_auto;
206 for (i = 0; i < SSL_PKEY_NUM; i++) {
207 CERT_PKEY *cpk = cert->pkeys + i;
208 CERT_PKEY *rpk = ret->pkeys + i;
209 if (cpk->x509 != NULL) {
210 rpk->x509 = cpk->x509;
211 X509_up_ref(rpk->x509);
214 if (cpk->privatekey != NULL) {
215 rpk->privatekey = cpk->privatekey;
216 EVP_PKEY_up_ref(cpk->privatekey);
220 rpk->chain = X509_chain_up_ref(cpk->chain);
222 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
226 if (cert->pkeys[i].serverinfo != NULL) {
227 /* Just copy everything. */
228 ret->pkeys[i].serverinfo =
229 OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
230 if (ret->pkeys[i].serverinfo == NULL) {
231 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
234 ret->pkeys[i].serverinfo_length =
235 cert->pkeys[i].serverinfo_length;
236 memcpy(ret->pkeys[i].serverinfo,
237 cert->pkeys[i].serverinfo,
238 cert->pkeys[i].serverinfo_length);
242 /* Configured sigalgs copied across */
243 if (cert->conf_sigalgs) {
244 ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen);
245 if (ret->conf_sigalgs == NULL)
247 memcpy(ret->conf_sigalgs, cert->conf_sigalgs, cert->conf_sigalgslen);
248 ret->conf_sigalgslen = cert->conf_sigalgslen;
250 ret->conf_sigalgs = NULL;
252 if (cert->client_sigalgs) {
253 ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen);
254 if (ret->client_sigalgs == NULL)
256 memcpy(ret->client_sigalgs, cert->client_sigalgs,
257 cert->client_sigalgslen);
258 ret->client_sigalgslen = cert->client_sigalgslen;
260 ret->client_sigalgs = NULL;
261 /* Shared sigalgs also NULL */
262 ret->shared_sigalgs = NULL;
263 /* Copy any custom client certificate types */
265 ret->ctypes = OPENSSL_malloc(cert->ctype_num);
266 if (ret->ctypes == NULL)
268 memcpy(ret->ctypes, cert->ctypes, cert->ctype_num);
269 ret->ctype_num = cert->ctype_num;
272 ret->cert_flags = cert->cert_flags;
274 ret->cert_cb = cert->cert_cb;
275 ret->cert_cb_arg = cert->cert_cb_arg;
277 if (cert->verify_store) {
278 X509_STORE_up_ref(cert->verify_store);
279 ret->verify_store = cert->verify_store;
282 if (cert->chain_store) {
283 X509_STORE_up_ref(cert->chain_store);
284 ret->chain_store = cert->chain_store;
287 ret->sec_cb = cert->sec_cb;
288 ret->sec_level = cert->sec_level;
289 ret->sec_ex = cert->sec_ex;
291 if (!custom_exts_copy(&ret->cli_ext, &cert->cli_ext))
293 if (!custom_exts_copy(&ret->srv_ext, &cert->srv_ext))
295 #ifndef OPENSSL_NO_PSK
296 if (cert->psk_identity_hint) {
297 ret->psk_identity_hint = OPENSSL_strdup(cert->psk_identity_hint);
298 if (ret->psk_identity_hint == NULL)
310 /* Free up and clear all certificates and chains */
312 void ssl_cert_clear_certs(CERT *c)
317 for (i = 0; i < SSL_PKEY_NUM; i++) {
318 CERT_PKEY *cpk = c->pkeys + i;
319 X509_free(cpk->x509);
321 EVP_PKEY_free(cpk->privatekey);
322 cpk->privatekey = NULL;
323 sk_X509_pop_free(cpk->chain, X509_free);
325 OPENSSL_free(cpk->serverinfo);
326 cpk->serverinfo = NULL;
327 cpk->serverinfo_length = 0;
331 void ssl_cert_free(CERT *c)
338 CRYPTO_atomic_add(&c->references, -1, &i, c->lock);
339 REF_PRINT_COUNT("CERT", c);
342 REF_ASSERT_ISNT(i < 0);
344 #ifndef OPENSSL_NO_DH
345 EVP_PKEY_free(c->dh_tmp);
348 ssl_cert_clear_certs(c);
349 OPENSSL_free(c->conf_sigalgs);
350 OPENSSL_free(c->client_sigalgs);
351 OPENSSL_free(c->shared_sigalgs);
352 OPENSSL_free(c->ctypes);
353 X509_STORE_free(c->verify_store);
354 X509_STORE_free(c->chain_store);
355 custom_exts_free(&c->cli_ext);
356 custom_exts_free(&c->srv_ext);
357 #ifndef OPENSSL_NO_PSK
358 OPENSSL_free(c->psk_identity_hint);
360 CRYPTO_THREAD_lock_free(c->lock);
364 int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
367 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
370 sk_X509_pop_free(cpk->chain, X509_free);
371 for (i = 0; i < sk_X509_num(chain); i++) {
372 r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0);
374 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r);
382 int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
384 STACK_OF(X509) *dchain;
386 return ssl_cert_set0_chain(s, ctx, NULL);
387 dchain = X509_chain_up_ref(chain);
390 if (!ssl_cert_set0_chain(s, ctx, dchain)) {
391 sk_X509_pop_free(dchain, X509_free);
397 int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
400 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
403 r = ssl_security_cert(s, ctx, x, 0, 0);
405 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r);
409 cpk->chain = sk_X509_new_null();
410 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
415 int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
417 if (!ssl_cert_add0_chain_cert(s, ctx, x))
423 int ssl_cert_select_current(CERT *c, X509 *x)
428 for (i = 0; i < SSL_PKEY_NUM; i++) {
429 CERT_PKEY *cpk = c->pkeys + i;
430 if (cpk->x509 == x && cpk->privatekey) {
436 for (i = 0; i < SSL_PKEY_NUM; i++) {
437 CERT_PKEY *cpk = c->pkeys + i;
438 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
446 int ssl_cert_set_current(CERT *c, long op)
451 if (op == SSL_CERT_SET_FIRST)
453 else if (op == SSL_CERT_SET_NEXT) {
454 idx = (int)(c->key - c->pkeys + 1);
455 if (idx >= SSL_PKEY_NUM)
459 for (i = idx; i < SSL_PKEY_NUM; i++) {
460 CERT_PKEY *cpk = c->pkeys + i;
461 if (cpk->x509 && cpk->privatekey) {
469 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
472 c->cert_cb_arg = arg;
475 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
479 X509_STORE *verify_store;
481 X509_VERIFY_PARAM *param;
483 if (s->cert->verify_store)
484 verify_store = s->cert->verify_store;
486 verify_store = s->ctx->cert_store;
488 if ((sk == NULL) || (sk_X509_num(sk) == 0))
491 x = sk_X509_value(sk, 0);
492 if (!X509_STORE_CTX_init(&ctx, verify_store, x, sk)) {
493 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
496 param = X509_STORE_CTX_get0_param(&ctx);
498 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
499 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
500 * and PKI authentication.
502 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s));
504 /* Set suite B flags if needed */
505 X509_STORE_CTX_set_flags(&ctx, tls1_suiteb(s));
506 X509_STORE_CTX_set_ex_data(&ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s);
508 /* Verify via DANE if enabled */
509 if (DANETLS_ENABLED(&s->dane))
510 X509_STORE_CTX_set0_dane(&ctx, &s->dane);
513 * We need to inherit the verify parameters. These can be determined by
514 * the context: if its a server it will verify SSL client certificates or
518 X509_STORE_CTX_set_default(&ctx, s->server ? "ssl_client" : "ssl_server");
520 * Anything non-default in "s->param" should overwrite anything in the ctx.
522 X509_VERIFY_PARAM_set1(param, s->param);
524 if (s->verify_callback)
525 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback);
527 if (s->ctx->app_verify_callback != NULL)
528 i = s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg);
530 i = X509_verify_cert(&ctx);
532 s->verify_result = ctx.error;
533 sk_X509_pop_free(s->verified_chain, X509_free);
534 s->verified_chain = NULL;
535 if (X509_STORE_CTX_get_chain(&ctx) != NULL) {
536 s->verified_chain = X509_STORE_CTX_get1_chain(&ctx);
537 if (s->verified_chain == NULL) {
538 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
543 /* Move peername from the store context params to the SSL handle's */
544 X509_VERIFY_PARAM_move_peername(s->param, param);
546 X509_STORE_CTX_cleanup(&ctx);
551 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,
552 STACK_OF(X509_NAME) *name_list)
554 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
555 *ca_list = name_list;
558 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk)
561 STACK_OF(X509_NAME) *ret;
564 ret = sk_X509_NAME_new_null();
565 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
566 name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
567 if ((name == NULL) || !sk_X509_NAME_push(ret, name)) {
568 sk_X509_NAME_pop_free(ret, X509_NAME_free);
575 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
577 set_client_CA_list(&(s->client_CA), name_list);
580 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
582 set_client_CA_list(&(ctx->client_CA), name_list);
585 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
587 return (ctx->client_CA);
590 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
592 if (!s->server) { /* we are in the client */
593 if (((s->version >> 8) == SSL3_VERSION_MAJOR) && (s->s3 != NULL))
594 return (s->s3->tmp.ca_names);
598 if (s->client_CA != NULL)
599 return (s->client_CA);
601 return (s->ctx->client_CA);
605 static int add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x)
611 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL))
614 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
617 if (!sk_X509_NAME_push(*sk, name)) {
618 X509_NAME_free(name);
624 int SSL_add_client_CA(SSL *ssl, X509 *x)
626 return (add_client_CA(&(ssl->client_CA), x));
629 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
631 return (add_client_CA(&(ctx->client_CA), x));
634 static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
636 return (X509_NAME_cmp(*a, *b));
639 static int xname_cmp(const X509_NAME *a, const X509_NAME *b)
641 return X509_NAME_cmp(a, b);
644 static unsigned long xname_hash(const X509_NAME *a)
646 return X509_NAME_hash((X509_NAME *)a);
650 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
651 * it doesn't really have anything to do with clients (except that a common use
652 * for a stack of CAs is to send it to the client). Actually, it doesn't have
653 * much to do with CAs, either, since it will load any old cert.
654 * \param file the file containing one or more certs.
655 * \return a ::STACK containing the certs.
657 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
659 BIO *in = BIO_new(BIO_s_file());
661 X509_NAME *xn = NULL;
662 STACK_OF(X509_NAME) *ret = NULL;
663 LHASH_OF(X509_NAME) *name_hash =
664 lh_X509_NAME_new(xname_hash, xname_cmp);
666 if ((name_hash == NULL) || (in == NULL)) {
667 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
671 if (!BIO_read_filename(in, file))
675 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
678 ret = sk_X509_NAME_new_null();
680 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
684 if ((xn = X509_get_subject_name(x)) == NULL)
686 /* check for duplicates */
687 xn = X509_NAME_dup(xn);
690 if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) {
694 lh_X509_NAME_insert(name_hash, xn);
695 sk_X509_NAME_push(ret, xn);
701 sk_X509_NAME_pop_free(ret, X509_NAME_free);
706 lh_X509_NAME_free(name_hash);
713 * Add a file of certs to a stack.
714 * \param stack the stack to add to.
715 * \param file the file to add from. All certs in this file that are not
716 * already in the stack will be added.
717 * \return 1 for success, 0 for failure. Note that in the case of failure some
718 * certs may have been added to \c stack.
721 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
726 X509_NAME *xn = NULL;
728 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
730 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
732 in = BIO_new(BIO_s_file());
735 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,
736 ERR_R_MALLOC_FAILURE);
740 if (!BIO_read_filename(in, file))
744 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
746 if ((xn = X509_get_subject_name(x)) == NULL)
748 xn = X509_NAME_dup(xn);
751 if (sk_X509_NAME_find(stack, xn) >= 0)
754 sk_X509_NAME_push(stack, xn);
765 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
770 * Add a directory of certs to a stack.
771 * \param stack the stack to append to.
772 * \param dir the directory to append from. All files in this directory will be
773 * examined as potential certs. Any that are acceptable to
774 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
776 * \return 1 for success, 0 for failure. Note that in the case of failure some
777 * certs may have been added to \c stack.
780 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
783 OPENSSL_DIR_CTX *d = NULL;
784 const char *filename;
787 /* Note that a side effect is that the CAs will be sorted by name */
789 while ((filename = OPENSSL_DIR_read(&d, dir))) {
793 if (strlen(dir) + strlen(filename) + 2 > sizeof buf) {
794 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
795 SSL_R_PATH_TOO_LONG);
798 #ifdef OPENSSL_SYS_VMS
799 r = BIO_snprintf(buf, sizeof buf, "%s%s", dir, filename);
801 r = BIO_snprintf(buf, sizeof buf, "%s/%s", dir, filename);
803 if (r <= 0 || r >= (int)sizeof(buf))
805 if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
810 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
811 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
812 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
825 /* Add a certificate to a BUF_MEM structure */
827 static int ssl_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x)
832 n = i2d_X509(x, NULL);
833 if (!BUF_MEM_grow_clean(buf, (int)(n + (*l) + 3))) {
834 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF, ERR_R_BUF_LIB);
837 p = (unsigned char *)&(buf->data[*l]);
845 /* Add certificate chain to internal SSL BUF_MEM structure */
846 int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l)
848 BUF_MEM *buf = s->init_buf;
852 STACK_OF(X509) *extra_certs;
853 X509_STORE *chain_store;
855 /* TLSv1 sends a chain with nothing in it, instead of an alert */
856 if (!BUF_MEM_grow_clean(buf, 10)) {
857 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_BUF_LIB);
861 if (!cpk || !cpk->x509)
867 * If we have a certificate specific chain use it, else use parent ctx.
870 extra_certs = cpk->chain;
872 extra_certs = s->ctx->extra_certs;
874 if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || extra_certs)
876 else if (s->cert->chain_store)
877 chain_store = s->cert->chain_store;
879 chain_store = s->ctx->cert_store;
882 X509_STORE_CTX xs_ctx;
884 if (!X509_STORE_CTX_init(&xs_ctx, chain_store, x, NULL)) {
885 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_X509_LIB);
889 * It is valid for the chain not to be complete (because normally we
890 * don't include the root cert in the chain). Therefore we deliberately
891 * ignore the error return from this call. We're not actually verifying
892 * the cert - we're just building as much of the chain as we can
894 (void) X509_verify_cert(&xs_ctx);
895 /* Don't leave errors in the queue */
897 i = ssl_security_cert_chain(s, xs_ctx.chain, NULL, 0);
899 X509_STORE_CTX_cleanup(&xs_ctx);
901 /* Dummy error calls so mkerr generates them */
902 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, SSL_R_EE_KEY_TOO_SMALL);
903 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, SSL_R_CA_KEY_TOO_SMALL);
904 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, SSL_R_CA_MD_TOO_WEAK);
906 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, i);
909 for (i = 0; i < sk_X509_num(xs_ctx.chain); i++) {
910 x = sk_X509_value(xs_ctx.chain, i);
912 if (!ssl_add_cert_to_buf(buf, l, x)) {
913 X509_STORE_CTX_cleanup(&xs_ctx);
917 X509_STORE_CTX_cleanup(&xs_ctx);
919 i = ssl_security_cert_chain(s, extra_certs, x, 0);
921 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, i);
924 if (!ssl_add_cert_to_buf(buf, l, x))
926 for (i = 0; i < sk_X509_num(extra_certs); i++) {
927 x = sk_X509_value(extra_certs, i);
928 if (!ssl_add_cert_to_buf(buf, l, x))
935 /* Build a certificate chain for current certificate */
936 int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags)
938 CERT *c = s ? s->cert : ctx->cert;
939 CERT_PKEY *cpk = c->key;
940 X509_STORE *chain_store = NULL;
941 X509_STORE_CTX xs_ctx;
942 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
948 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
951 /* Rearranging and check the chain: add everything to a store */
952 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
953 chain_store = X509_STORE_new();
954 if (chain_store == NULL)
956 for (i = 0; i < sk_X509_num(cpk->chain); i++) {
957 x = sk_X509_value(cpk->chain, i);
958 if (!X509_STORE_add_cert(chain_store, x)) {
959 error = ERR_peek_last_error();
960 if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
961 ERR_GET_REASON(error) !=
962 X509_R_CERT_ALREADY_IN_HASH_TABLE)
967 /* Add EE cert too: it might be self signed */
968 if (!X509_STORE_add_cert(chain_store, cpk->x509)) {
969 error = ERR_peek_last_error();
970 if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
971 ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
977 chain_store = c->chain_store;
979 chain_store = s->ctx->cert_store;
981 chain_store = ctx->cert_store;
983 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
984 untrusted = cpk->chain;
987 if (!X509_STORE_CTX_init(&xs_ctx, chain_store, cpk->x509, untrusted)) {
988 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
991 /* Set suite B flags if needed */
992 X509_STORE_CTX_set_flags(&xs_ctx,
993 c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
995 i = X509_verify_cert(&xs_ctx);
996 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
997 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
1003 chain = X509_STORE_CTX_get1_chain(&xs_ctx);
1005 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
1006 i = X509_STORE_CTX_get_error(&xs_ctx);
1007 ERR_add_error_data(2, "Verify error:",
1008 X509_verify_cert_error_string(i));
1010 X509_STORE_CTX_cleanup(&xs_ctx);
1013 X509_STORE_CTX_cleanup(&xs_ctx);
1014 /* Remove EE certificate from chain */
1015 x = sk_X509_shift(chain);
1017 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
1018 if (sk_X509_num(chain) > 0) {
1019 /* See if last cert is self signed */
1020 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
1021 if (X509_get_extension_flags(x) & EXFLAG_SS) {
1022 x = sk_X509_pop(chain);
1028 * Check security level of all CA certificates: EE will have been checked
1031 for (i = 0; i < sk_X509_num(chain); i++) {
1032 x = sk_X509_value(chain, i);
1033 rv = ssl_security_cert(s, ctx, x, 0, 0);
1035 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv);
1036 sk_X509_pop_free(chain, X509_free);
1041 sk_X509_pop_free(cpk->chain, X509_free);
1046 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
1047 X509_STORE_free(chain_store);
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 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx, int op,
1067 int bits, int nid, void *other,
1071 static const int minbits_table[5] = { 80, 112, 128, 192, 256 };
1073 level = SSL_CTX_get_security_level(ctx);
1075 level = SSL_get_security_level(s);
1079 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
1082 if (op == SSL_SECOP_TMP_DH && bits < 80)
1088 minbits = minbits_table[level - 1];
1090 case SSL_SECOP_CIPHER_SUPPORTED:
1091 case SSL_SECOP_CIPHER_SHARED:
1092 case SSL_SECOP_CIPHER_CHECK:
1094 const SSL_CIPHER *c = other;
1095 /* No ciphers below security level */
1098 /* No unauthenticated ciphersuites */
1099 if (c->algorithm_auth & SSL_aNULL)
1101 /* No MD5 mac ciphersuites */
1102 if (c->algorithm_mac & SSL_MD5)
1104 /* SHA1 HMAC is 160 bits of security */
1105 if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
1107 /* Level 2: no RC4 */
1108 if (level >= 2 && c->algorithm_enc == SSL_RC4)
1110 /* Level 3: forward secure ciphersuites only */
1111 if (level >= 3 && !(c->algorithm_mkey & (SSL_kEDH | SSL_kEECDH)))
1115 case SSL_SECOP_VERSION:
1116 if (!SSL_IS_DTLS(s)) {
1117 /* SSLv3 not allowed at level 2 */
1118 if (nid <= SSL3_VERSION && level >= 2)
1120 /* TLS v1.1 and above only for level 3 */
1121 if (nid <= TLS1_VERSION && level >= 3)
1123 /* TLS v1.2 only for level 4 and above */
1124 if (nid <= TLS1_1_VERSION && level >= 4)
1127 /* DTLS v1.2 only for level 4 and above */
1128 if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level >= 4)
1133 case SSL_SECOP_COMPRESSION:
1137 case SSL_SECOP_TICKET:
1148 int ssl_security(const SSL *s, int op, int bits, int nid, void *other)
1150 return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex);
1153 int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other)
1155 return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other,