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.
115 /* ====================================================================
116 * Copyright 2005 Nokia. All rights reserved.
118 * The portions of the attached software ("Contribution") is developed by
119 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
122 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
123 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
124 * support (see RFC 4279) to OpenSSL.
126 * No patent licenses or other rights except those expressly stated in
127 * the OpenSSL open source license shall be deemed granted or received
128 * expressly, by implication, estoppel, or otherwise.
130 * No assurances are provided by Nokia that the Contribution does not
131 * infringe the patent or other intellectual property rights of any third
132 * party or that the license provides you with all the necessary rights
133 * to make use of the Contribution.
135 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
136 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
137 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
138 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
141 #include <openssl/ssl.h>
145 #include <openssl/asn1.h>
146 #include <openssl/bytestring.h>
147 #include <openssl/err.h>
148 #include <openssl/pem.h>
149 #include <openssl/stack.h>
150 #include <openssl/x509.h>
151 #include <openssl/x509v3.h>
152 #include <openssl/x509_vfy.h>
154 #include "internal.h"
155 #include "../crypto/internal.h"
160 // check_ssl_x509_method asserts that |ssl| has the X509-based method
161 // installed. Calling an X509-based method on an |ssl| with a different method
162 // will likely misbehave and possibly crash or leak memory.
163 static void check_ssl_x509_method(const SSL *ssl) {
164 assert(ssl == NULL || ssl->ctx->x509_method == &ssl_crypto_x509_method);
167 // check_ssl_ctx_x509_method acts like |check_ssl_x509_method|, but for an
169 static void check_ssl_ctx_x509_method(const SSL_CTX *ctx) {
170 assert(ctx == NULL || ctx->x509_method == &ssl_crypto_x509_method);
173 // x509_to_buffer returns a |CRYPTO_BUFFER| that contains the serialised
174 // contents of |x509|.
175 static UniquePtr<CRYPTO_BUFFER> x509_to_buffer(X509 *x509) {
177 int cert_len = i2d_X509(x509, &buf);
182 UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(buf, cert_len, NULL));
188 // new_leafless_chain returns a fresh stack of buffers set to {NULL}.
189 static STACK_OF(CRYPTO_BUFFER) *new_leafless_chain(void) {
190 STACK_OF(CRYPTO_BUFFER) *chain = sk_CRYPTO_BUFFER_new_null();
195 if (!sk_CRYPTO_BUFFER_push(chain, NULL)) {
196 sk_CRYPTO_BUFFER_free(chain);
203 // ssl_cert_set_chain sets elements 1.. of |cert->chain| to the serialised
204 // forms of elements of |chain|. It returns one on success or zero on error, in
205 // which case no change to |cert->chain| is made. It preverses the existing
206 // leaf from |cert->chain|, if any.
207 static int ssl_cert_set_chain(CERT *cert, STACK_OF(X509) *chain) {
208 UniquePtr<STACK_OF(CRYPTO_BUFFER)> new_chain;
210 if (cert->chain != NULL) {
211 new_chain.reset(sk_CRYPTO_BUFFER_new_null());
216 CRYPTO_BUFFER *leaf = sk_CRYPTO_BUFFER_value(cert->chain, 0);
217 if (!sk_CRYPTO_BUFFER_push(new_chain.get(), leaf)) {
220 // |leaf| might be NULL if it's a “leafless” chain.
222 CRYPTO_BUFFER_up_ref(leaf);
226 for (X509 *x509 : chain) {
228 new_chain.reset(new_leafless_chain());
234 UniquePtr<CRYPTO_BUFFER> buffer = x509_to_buffer(x509);
236 !PushToStack(new_chain.get(), std::move(buffer))) {
241 sk_CRYPTO_BUFFER_pop_free(cert->chain, CRYPTO_BUFFER_free);
242 cert->chain = new_chain.release();
247 static void ssl_crypto_x509_cert_flush_cached_leaf(CERT *cert) {
248 X509_free(cert->x509_leaf);
249 cert->x509_leaf = NULL;
252 static void ssl_crypto_x509_cert_flush_cached_chain(CERT *cert) {
253 sk_X509_pop_free(cert->x509_chain, X509_free);
254 cert->x509_chain = NULL;
257 static int ssl_crypto_x509_check_client_CA_list(
258 STACK_OF(CRYPTO_BUFFER) *names) {
259 for (const CRYPTO_BUFFER *buffer : names) {
260 const uint8_t *inp = CRYPTO_BUFFER_data(buffer);
261 X509_NAME *name = d2i_X509_NAME(NULL, &inp, CRYPTO_BUFFER_len(buffer));
262 const int ok = name != NULL && inp == CRYPTO_BUFFER_data(buffer) +
263 CRYPTO_BUFFER_len(buffer);
264 X509_NAME_free(name);
273 static void ssl_crypto_x509_cert_clear(CERT *cert) {
274 ssl_crypto_x509_cert_flush_cached_leaf(cert);
275 ssl_crypto_x509_cert_flush_cached_chain(cert);
277 X509_free(cert->x509_stash);
278 cert->x509_stash = NULL;
281 static void ssl_crypto_x509_cert_free(CERT *cert) {
282 ssl_crypto_x509_cert_clear(cert);
283 X509_STORE_free(cert->verify_store);
286 static void ssl_crypto_x509_cert_dup(CERT *new_cert, const CERT *cert) {
287 if (cert->verify_store != NULL) {
288 X509_STORE_up_ref(cert->verify_store);
289 new_cert->verify_store = cert->verify_store;
293 static int ssl_crypto_x509_session_cache_objects(SSL_SESSION *sess) {
294 bssl::UniquePtr<STACK_OF(X509)> chain;
295 if (sk_CRYPTO_BUFFER_num(sess->certs) > 0) {
296 chain.reset(sk_X509_new_null());
298 OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
303 X509 *leaf = nullptr;
304 for (CRYPTO_BUFFER *cert : sess->certs) {
305 UniquePtr<X509> x509(X509_parse_from_buffer(cert));
307 OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
310 if (leaf == nullptr) {
313 if (!PushToStack(chain.get(), std::move(x509))) {
314 OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
319 sk_X509_pop_free(sess->x509_chain, X509_free);
320 sess->x509_chain = chain.release();
321 sk_X509_pop_free(sess->x509_chain_without_leaf, X509_free);
322 sess->x509_chain_without_leaf = NULL;
324 X509_free(sess->x509_peer);
328 sess->x509_peer = leaf;
332 static int ssl_crypto_x509_session_dup(SSL_SESSION *new_session,
333 const SSL_SESSION *session) {
334 if (session->x509_peer != NULL) {
335 X509_up_ref(session->x509_peer);
336 new_session->x509_peer = session->x509_peer;
338 if (session->x509_chain != NULL) {
339 new_session->x509_chain = X509_chain_up_ref(session->x509_chain);
340 if (new_session->x509_chain == NULL) {
348 static void ssl_crypto_x509_session_clear(SSL_SESSION *session) {
349 X509_free(session->x509_peer);
350 session->x509_peer = NULL;
351 sk_X509_pop_free(session->x509_chain, X509_free);
352 session->x509_chain = NULL;
353 sk_X509_pop_free(session->x509_chain_without_leaf, X509_free);
354 session->x509_chain_without_leaf = NULL;
357 static int ssl_crypto_x509_session_verify_cert_chain(SSL_SESSION *session,
359 uint8_t *out_alert) {
360 *out_alert = SSL_AD_INTERNAL_ERROR;
361 STACK_OF(X509) *const cert_chain = session->x509_chain;
362 if (cert_chain == NULL || sk_X509_num(cert_chain) == 0) {
366 X509_STORE *verify_store = ssl->ctx->cert_store;
367 if (ssl->cert->verify_store != NULL) {
368 verify_store = ssl->cert->verify_store;
371 X509 *leaf = sk_X509_value(cert_chain, 0);
372 ScopedX509_STORE_CTX ctx;
373 if (!X509_STORE_CTX_init(ctx.get(), verify_store, leaf, cert_chain)) {
374 OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB);
377 if (!X509_STORE_CTX_set_ex_data(ctx.get(),
378 SSL_get_ex_data_X509_STORE_CTX_idx(), ssl)) {
382 // We need to inherit the verify parameters. These can be determined by the
383 // context: if its a server it will verify SSL client certificates or vice
385 X509_STORE_CTX_set_default(ctx.get(),
386 ssl->server ? "ssl_client" : "ssl_server");
388 // Anything non-default in "param" should overwrite anything in the ctx.
389 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(ctx.get()), ssl->param);
391 if (ssl->verify_callback) {
392 X509_STORE_CTX_set_verify_cb(ctx.get(), ssl->verify_callback);
396 if (ssl->ctx->app_verify_callback != NULL) {
398 ssl->ctx->app_verify_callback(ctx.get(), ssl->ctx->app_verify_arg);
400 verify_ret = X509_verify_cert(ctx.get());
403 session->verify_result = ctx->error;
405 // If |SSL_VERIFY_NONE|, the error is non-fatal, but we keep the result.
406 if (verify_ret <= 0 && ssl->verify_mode != SSL_VERIFY_NONE) {
407 *out_alert = SSL_alert_from_verify_result(ctx->error);
415 static void ssl_crypto_x509_hs_flush_cached_ca_names(SSL_HANDSHAKE *hs) {
416 sk_X509_NAME_pop_free(hs->cached_x509_ca_names, X509_NAME_free);
417 hs->cached_x509_ca_names = NULL;
420 static int ssl_crypto_x509_ssl_new(SSL *ssl) {
421 ssl->param = X509_VERIFY_PARAM_new();
422 if (ssl->param == NULL) {
425 X509_VERIFY_PARAM_inherit(ssl->param, ssl->ctx->param);
429 static void ssl_crypto_x509_ssl_flush_cached_client_CA(SSL *ssl) {
430 sk_X509_NAME_pop_free(ssl->cached_x509_client_CA, X509_NAME_free);
431 ssl->cached_x509_client_CA = NULL;
434 static void ssl_crypto_x509_ssl_free(SSL *ssl) {
435 ssl_crypto_x509_ssl_flush_cached_client_CA(ssl);
436 X509_VERIFY_PARAM_free(ssl->param);
439 static int ssl_crypto_x509_ssl_auto_chain_if_needed(SSL *ssl) {
440 // Only build a chain if there are no intermediates configured and the feature
442 if ((ssl->mode & SSL_MODE_NO_AUTO_CHAIN) ||
443 !ssl_has_certificate(ssl) ||
444 ssl->cert->chain == NULL ||
445 sk_CRYPTO_BUFFER_num(ssl->cert->chain) > 1) {
449 UniquePtr<X509> leaf(
450 X509_parse_from_buffer(sk_CRYPTO_BUFFER_value(ssl->cert->chain, 0)));
452 OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB);
456 ScopedX509_STORE_CTX ctx;
457 if (!X509_STORE_CTX_init(ctx.get(), ssl->ctx->cert_store, leaf.get(), NULL)) {
458 OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB);
462 // Attempt to build a chain, ignoring the result.
463 X509_verify_cert(ctx.get());
466 // Remove the leaf from the generated chain.
467 X509_free(sk_X509_shift(ctx->chain));
469 if (!ssl_cert_set_chain(ssl->cert, ctx->chain)) {
473 ssl_crypto_x509_cert_flush_cached_chain(ssl->cert);
478 static void ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(SSL_CTX *ctx) {
479 sk_X509_NAME_pop_free(ctx->cached_x509_client_CA, X509_NAME_free);
480 ctx->cached_x509_client_CA = NULL;
483 static int ssl_crypto_x509_ssl_ctx_new(SSL_CTX *ctx) {
484 ctx->cert_store = X509_STORE_new();
485 ctx->param = X509_VERIFY_PARAM_new();
486 return (ctx->cert_store != NULL && ctx->param != NULL);
489 static void ssl_crypto_x509_ssl_ctx_free(SSL_CTX *ctx) {
490 ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(ctx);
491 X509_VERIFY_PARAM_free(ctx->param);
492 X509_STORE_free(ctx->cert_store);
495 const SSL_X509_METHOD ssl_crypto_x509_method = {
496 ssl_crypto_x509_check_client_CA_list,
497 ssl_crypto_x509_cert_clear,
498 ssl_crypto_x509_cert_free,
499 ssl_crypto_x509_cert_dup,
500 ssl_crypto_x509_cert_flush_cached_chain,
501 ssl_crypto_x509_cert_flush_cached_leaf,
502 ssl_crypto_x509_session_cache_objects,
503 ssl_crypto_x509_session_dup,
504 ssl_crypto_x509_session_clear,
505 ssl_crypto_x509_session_verify_cert_chain,
506 ssl_crypto_x509_hs_flush_cached_ca_names,
507 ssl_crypto_x509_ssl_new,
508 ssl_crypto_x509_ssl_free,
509 ssl_crypto_x509_ssl_flush_cached_client_CA,
510 ssl_crypto_x509_ssl_auto_chain_if_needed,
511 ssl_crypto_x509_ssl_ctx_new,
512 ssl_crypto_x509_ssl_ctx_free,
513 ssl_crypto_x509_ssl_ctx_flush_cached_client_CA,
518 using namespace bssl;
520 X509 *SSL_get_peer_certificate(const SSL *ssl) {
521 check_ssl_x509_method(ssl);
525 SSL_SESSION *session = SSL_get_session(ssl);
526 if (session == NULL || session->x509_peer == NULL) {
529 X509_up_ref(session->x509_peer);
530 return session->x509_peer;
533 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *ssl) {
534 check_ssl_x509_method(ssl);
538 SSL_SESSION *session = SSL_get_session(ssl);
539 if (session == NULL ||
540 session->x509_chain == NULL) {
545 return session->x509_chain;
548 // OpenSSL historically didn't include the leaf certificate in the returned
549 // certificate chain, but only for servers.
550 if (session->x509_chain_without_leaf == NULL) {
551 session->x509_chain_without_leaf = sk_X509_new_null();
552 if (session->x509_chain_without_leaf == NULL) {
556 for (size_t i = 1; i < sk_X509_num(session->x509_chain); i++) {
557 X509 *cert = sk_X509_value(session->x509_chain, i);
558 if (!sk_X509_push(session->x509_chain_without_leaf, cert)) {
559 sk_X509_pop_free(session->x509_chain_without_leaf, X509_free);
560 session->x509_chain_without_leaf = NULL;
567 return session->x509_chain_without_leaf;
570 STACK_OF(X509) *SSL_get_peer_full_cert_chain(const SSL *ssl) {
571 check_ssl_x509_method(ssl);
572 SSL_SESSION *session = SSL_get_session(ssl);
573 if (session == NULL) {
577 return session->x509_chain;
580 int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose) {
581 check_ssl_ctx_x509_method(ctx);
582 return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose);
585 int SSL_set_purpose(SSL *ssl, int purpose) {
586 check_ssl_x509_method(ssl);
587 return X509_VERIFY_PARAM_set_purpose(ssl->param, purpose);
590 int SSL_CTX_set_trust(SSL_CTX *ctx, int trust) {
591 check_ssl_ctx_x509_method(ctx);
592 return X509_VERIFY_PARAM_set_trust(ctx->param, trust);
595 int SSL_set_trust(SSL *ssl, int trust) {
596 check_ssl_x509_method(ssl);
597 return X509_VERIFY_PARAM_set_trust(ssl->param, trust);
600 int SSL_CTX_set1_param(SSL_CTX *ctx, const X509_VERIFY_PARAM *param) {
601 check_ssl_ctx_x509_method(ctx);
602 return X509_VERIFY_PARAM_set1(ctx->param, param);
605 int SSL_set1_param(SSL *ssl, const X509_VERIFY_PARAM *param) {
606 check_ssl_x509_method(ssl);
607 return X509_VERIFY_PARAM_set1(ssl->param, param);
610 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) {
611 check_ssl_ctx_x509_method(ctx);
615 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) {
616 check_ssl_x509_method(ssl);
620 int SSL_get_verify_depth(const SSL *ssl) {
621 check_ssl_x509_method(ssl);
622 return X509_VERIFY_PARAM_get_depth(ssl->param);
625 int (*SSL_get_verify_callback(const SSL *ssl))(int, X509_STORE_CTX *) {
626 check_ssl_x509_method(ssl);
627 return ssl->verify_callback;
630 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) {
631 check_ssl_ctx_x509_method(ctx);
632 return ctx->verify_mode;
635 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) {
636 check_ssl_ctx_x509_method(ctx);
637 return X509_VERIFY_PARAM_get_depth(ctx->param);
640 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(
641 int ok, X509_STORE_CTX *store_ctx) {
642 check_ssl_ctx_x509_method(ctx);
643 return ctx->default_verify_callback;
646 void SSL_set_verify(SSL *ssl, int mode,
647 int (*callback)(int ok, X509_STORE_CTX *store_ctx)) {
648 check_ssl_x509_method(ssl);
649 ssl->verify_mode = mode;
650 if (callback != NULL) {
651 ssl->verify_callback = callback;
655 void SSL_set_verify_depth(SSL *ssl, int depth) {
656 check_ssl_x509_method(ssl);
657 X509_VERIFY_PARAM_set_depth(ssl->param, depth);
660 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
661 int (*cb)(X509_STORE_CTX *store_ctx,
664 check_ssl_ctx_x509_method(ctx);
665 ctx->app_verify_callback = cb;
666 ctx->app_verify_arg = arg;
669 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
670 int (*cb)(int, X509_STORE_CTX *)) {
671 check_ssl_ctx_x509_method(ctx);
672 ctx->verify_mode = mode;
673 ctx->default_verify_callback = cb;
676 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) {
677 check_ssl_ctx_x509_method(ctx);
678 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
681 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) {
682 check_ssl_ctx_x509_method(ctx);
683 return X509_STORE_set_default_paths(ctx->cert_store);
686 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *ca_file,
687 const char *ca_dir) {
688 check_ssl_ctx_x509_method(ctx);
689 return X509_STORE_load_locations(ctx->cert_store, ca_file, ca_dir);
692 void SSL_set_verify_result(SSL *ssl, long result) {
693 check_ssl_x509_method(ssl);
694 if (result != X509_V_OK) {
699 long SSL_get_verify_result(const SSL *ssl) {
700 check_ssl_x509_method(ssl);
701 SSL_SESSION *session = SSL_get_session(ssl);
702 if (session == NULL) {
703 return X509_V_ERR_INVALID_CALL;
705 return session->verify_result;
708 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) {
709 check_ssl_ctx_x509_method(ctx);
710 return ctx->cert_store;
713 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) {
714 check_ssl_ctx_x509_method(ctx);
715 X509_STORE_free(ctx->cert_store);
716 ctx->cert_store = store;
719 static int ssl_use_certificate(CERT *cert, X509 *x) {
721 OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
725 UniquePtr<CRYPTO_BUFFER> buffer = x509_to_buffer(x);
730 return ssl_set_cert(cert, std::move(buffer));
733 int SSL_use_certificate(SSL *ssl, X509 *x) {
734 check_ssl_x509_method(ssl);
735 return ssl_use_certificate(ssl->cert, x);
738 int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x) {
739 check_ssl_ctx_x509_method(ctx);
740 return ssl_use_certificate(ctx->cert, x);
743 // ssl_cert_cache_leaf_cert sets |cert->x509_leaf|, if currently NULL, from the
744 // first element of |cert->chain|.
745 static int ssl_cert_cache_leaf_cert(CERT *cert) {
746 assert(cert->x509_method);
748 if (cert->x509_leaf != NULL ||
749 cert->chain == NULL) {
753 CRYPTO_BUFFER *leaf = sk_CRYPTO_BUFFER_value(cert->chain, 0);
758 cert->x509_leaf = X509_parse_from_buffer(leaf);
759 return cert->x509_leaf != NULL;
762 static X509 *ssl_cert_get0_leaf(CERT *cert) {
763 if (cert->x509_leaf == NULL &&
764 !ssl_cert_cache_leaf_cert(cert)) {
768 return cert->x509_leaf;
771 X509 *SSL_get_certificate(const SSL *ssl) {
772 check_ssl_x509_method(ssl);
773 return ssl_cert_get0_leaf(ssl->cert);
776 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) {
777 check_ssl_ctx_x509_method(ctx);
778 MutexWriteLock lock(const_cast<CRYPTO_MUTEX*>(&ctx->lock));
779 return ssl_cert_get0_leaf(ctx->cert);
782 static int ssl_cert_set0_chain(CERT *cert, STACK_OF(X509) *chain) {
783 if (!ssl_cert_set_chain(cert, chain)) {
787 sk_X509_pop_free(chain, X509_free);
788 ssl_crypto_x509_cert_flush_cached_chain(cert);
792 static int ssl_cert_set1_chain(CERT *cert, STACK_OF(X509) *chain) {
793 if (!ssl_cert_set_chain(cert, chain)) {
797 ssl_crypto_x509_cert_flush_cached_chain(cert);
801 static int ssl_cert_append_cert(CERT *cert, X509 *x509) {
802 assert(cert->x509_method);
804 UniquePtr<CRYPTO_BUFFER> buffer = x509_to_buffer(x509);
809 if (cert->chain != NULL) {
810 return PushToStack(cert->chain, std::move(buffer));
813 cert->chain = new_leafless_chain();
814 if (cert->chain == NULL ||
815 !PushToStack(cert->chain, std::move(buffer))) {
816 sk_CRYPTO_BUFFER_free(cert->chain);
824 static int ssl_cert_add0_chain_cert(CERT *cert, X509 *x509) {
825 if (!ssl_cert_append_cert(cert, x509)) {
829 X509_free(cert->x509_stash);
830 cert->x509_stash = x509;
831 ssl_crypto_x509_cert_flush_cached_chain(cert);
835 static int ssl_cert_add1_chain_cert(CERT *cert, X509 *x509) {
836 if (!ssl_cert_append_cert(cert, x509)) {
840 ssl_crypto_x509_cert_flush_cached_chain(cert);
844 int SSL_CTX_set0_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) {
845 check_ssl_ctx_x509_method(ctx);
846 return ssl_cert_set0_chain(ctx->cert, chain);
849 int SSL_CTX_set1_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) {
850 check_ssl_ctx_x509_method(ctx);
851 return ssl_cert_set1_chain(ctx->cert, chain);
854 int SSL_set0_chain(SSL *ssl, STACK_OF(X509) *chain) {
855 check_ssl_x509_method(ssl);
856 return ssl_cert_set0_chain(ssl->cert, chain);
859 int SSL_set1_chain(SSL *ssl, STACK_OF(X509) *chain) {
860 check_ssl_x509_method(ssl);
861 return ssl_cert_set1_chain(ssl->cert, chain);
864 int SSL_CTX_add0_chain_cert(SSL_CTX *ctx, X509 *x509) {
865 check_ssl_ctx_x509_method(ctx);
866 return ssl_cert_add0_chain_cert(ctx->cert, x509);
869 int SSL_CTX_add1_chain_cert(SSL_CTX *ctx, X509 *x509) {
870 check_ssl_ctx_x509_method(ctx);
871 return ssl_cert_add1_chain_cert(ctx->cert, x509);
874 int SSL_CTX_add_extra_chain_cert(SSL_CTX *ctx, X509 *x509) {
875 check_ssl_ctx_x509_method(ctx);
876 return SSL_CTX_add0_chain_cert(ctx, x509);
879 int SSL_add0_chain_cert(SSL *ssl, X509 *x509) {
880 check_ssl_x509_method(ssl);
881 return ssl_cert_add0_chain_cert(ssl->cert, x509);
884 int SSL_add1_chain_cert(SSL *ssl, X509 *x509) {
885 check_ssl_x509_method(ssl);
886 return ssl_cert_add1_chain_cert(ssl->cert, x509);
889 int SSL_CTX_clear_chain_certs(SSL_CTX *ctx) {
890 check_ssl_ctx_x509_method(ctx);
891 return SSL_CTX_set0_chain(ctx, NULL);
894 int SSL_CTX_clear_extra_chain_certs(SSL_CTX *ctx) {
895 check_ssl_ctx_x509_method(ctx);
896 return SSL_CTX_clear_chain_certs(ctx);
899 int SSL_clear_chain_certs(SSL *ssl) {
900 check_ssl_x509_method(ssl);
901 return SSL_set0_chain(ssl, NULL);
904 // ssl_cert_cache_chain_certs fills in |cert->x509_chain| from elements 1.. of
906 static int ssl_cert_cache_chain_certs(CERT *cert) {
907 assert(cert->x509_method);
909 if (cert->x509_chain != NULL ||
910 cert->chain == NULL ||
911 sk_CRYPTO_BUFFER_num(cert->chain) < 2) {
915 UniquePtr<STACK_OF(X509)> chain(sk_X509_new_null());
920 for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(cert->chain); i++) {
921 CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(cert->chain, i);
922 UniquePtr<X509> x509(X509_parse_from_buffer(buffer));
924 !PushToStack(chain.get(), std::move(x509))) {
929 cert->x509_chain = chain.release();
933 int SSL_CTX_get0_chain_certs(const SSL_CTX *ctx, STACK_OF(X509) **out_chain) {
934 check_ssl_ctx_x509_method(ctx);
935 MutexWriteLock lock(const_cast<CRYPTO_MUTEX*>(&ctx->lock));
936 if (!ssl_cert_cache_chain_certs(ctx->cert)) {
941 *out_chain = ctx->cert->x509_chain;
945 int SSL_CTX_get_extra_chain_certs(const SSL_CTX *ctx,
946 STACK_OF(X509) **out_chain) {
947 return SSL_CTX_get0_chain_certs(ctx, out_chain);
950 int SSL_get0_chain_certs(const SSL *ssl, STACK_OF(X509) **out_chain) {
951 check_ssl_x509_method(ssl);
952 if (!ssl_cert_cache_chain_certs(ssl->cert)) {
957 *out_chain = ssl->cert->x509_chain;
961 static SSL_SESSION *ssl_session_new_with_crypto_x509(void) {
962 return ssl_session_new(&ssl_crypto_x509_method).release();
965 SSL_SESSION *d2i_SSL_SESSION_bio(BIO *bio, SSL_SESSION **out) {
966 return ASN1_d2i_bio_of(SSL_SESSION, ssl_session_new_with_crypto_x509,
967 d2i_SSL_SESSION, bio, out);
970 int i2d_SSL_SESSION_bio(BIO *bio, const SSL_SESSION *session) {
971 return ASN1_i2d_bio_of(SSL_SESSION, i2d_SSL_SESSION, bio, session);
974 IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION)
976 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const uint8_t **pp, long length) {
978 OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
983 CBS_init(&cbs, *pp, length);
985 UniquePtr<SSL_SESSION> ret = SSL_SESSION_parse(&cbs, &ssl_crypto_x509_method,
986 NULL /* no buffer pool */);
992 SSL_SESSION_free(*a);
995 *pp = CBS_data(&cbs);
996 return ret.release();
999 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *list) {
1000 return sk_X509_NAME_deep_copy(list, X509_NAME_dup, X509_NAME_free);
1003 static void set_client_CA_list(STACK_OF(CRYPTO_BUFFER) **ca_list,
1004 const STACK_OF(X509_NAME) *name_list,
1005 CRYPTO_BUFFER_POOL *pool) {
1006 UniquePtr<STACK_OF(CRYPTO_BUFFER)> buffers(sk_CRYPTO_BUFFER_new_null());
1011 for (X509_NAME *name : name_list) {
1012 uint8_t *outp = NULL;
1013 int len = i2d_X509_NAME(name, &outp);
1018 UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(outp, len, pool));
1021 !PushToStack(buffers.get(), std::move(buffer))) {
1026 sk_CRYPTO_BUFFER_pop_free(*ca_list, CRYPTO_BUFFER_free);
1027 *ca_list = buffers.release();
1030 void SSL_set_client_CA_list(SSL *ssl, STACK_OF(X509_NAME) *name_list) {
1031 check_ssl_x509_method(ssl);
1032 ssl->ctx->x509_method->ssl_flush_cached_client_CA(ssl);
1033 set_client_CA_list(&ssl->client_CA, name_list, ssl->ctx->pool);
1034 sk_X509_NAME_pop_free(name_list, X509_NAME_free);
1037 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) {
1038 check_ssl_ctx_x509_method(ctx);
1039 ctx->x509_method->ssl_ctx_flush_cached_client_CA(ctx);
1040 set_client_CA_list(&ctx->client_CA, name_list, ctx->pool);
1041 sk_X509_NAME_pop_free(name_list, X509_NAME_free);
1044 static STACK_OF(X509_NAME) *
1045 buffer_names_to_x509(const STACK_OF(CRYPTO_BUFFER) *names,
1046 STACK_OF(X509_NAME) **cached) {
1047 if (names == NULL) {
1051 if (*cached != NULL) {
1055 UniquePtr<STACK_OF(X509_NAME)> new_cache(sk_X509_NAME_new_null());
1057 OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
1061 for (const CRYPTO_BUFFER *buffer : names) {
1062 const uint8_t *inp = CRYPTO_BUFFER_data(buffer);
1063 UniquePtr<X509_NAME> name(
1064 d2i_X509_NAME(nullptr, &inp, CRYPTO_BUFFER_len(buffer)));
1066 inp != CRYPTO_BUFFER_data(buffer) + CRYPTO_BUFFER_len(buffer) ||
1067 !PushToStack(new_cache.get(), std::move(name))) {
1072 *cached = new_cache.release();
1076 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *ssl) {
1077 check_ssl_x509_method(ssl);
1078 // For historical reasons, this function is used both to query configuration
1079 // state on a server as well as handshake state on a client. However, whether
1080 // |ssl| is a client or server is not known until explicitly configured with
1081 // |SSL_set_connect_state|. If |do_handshake| is NULL, |ssl| is in an
1082 // indeterminate mode and |ssl->server| is unset.
1083 if (ssl->do_handshake != NULL && !ssl->server) {
1084 if (ssl->s3->hs != NULL) {
1085 return buffer_names_to_x509(ssl->s3->hs->ca_names.get(),
1086 &ssl->s3->hs->cached_x509_ca_names);
1092 if (ssl->client_CA != NULL) {
1093 return buffer_names_to_x509(
1094 ssl->client_CA, (STACK_OF(X509_NAME) **)&ssl->cached_x509_client_CA);
1096 return SSL_CTX_get_client_CA_list(ssl->ctx);
1099 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) {
1100 check_ssl_ctx_x509_method(ctx);
1101 // This is a logically const operation that may be called on multiple threads,
1102 // so it needs to lock around updating |cached_x509_client_CA|.
1103 MutexWriteLock lock(const_cast<CRYPTO_MUTEX *>(&ctx->lock));
1104 return buffer_names_to_x509(
1106 const_cast<STACK_OF(X509_NAME) **>(&ctx->cached_x509_client_CA));
1109 static int add_client_CA(STACK_OF(CRYPTO_BUFFER) **names, X509 *x509,
1110 CRYPTO_BUFFER_POOL *pool) {
1115 uint8_t *outp = NULL;
1116 int len = i2d_X509_NAME(X509_get_subject_name(x509), &outp);
1121 UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(outp, len, pool));
1128 if (*names == NULL) {
1129 *names = sk_CRYPTO_BUFFER_new_null();
1132 if (*names == NULL) {
1137 if (!PushToStack(*names, std::move(buffer))) {
1139 sk_CRYPTO_BUFFER_pop_free(*names, CRYPTO_BUFFER_free);
1148 int SSL_add_client_CA(SSL *ssl, X509 *x509) {
1149 check_ssl_x509_method(ssl);
1150 if (!add_client_CA(&ssl->client_CA, x509, ssl->ctx->pool)) {
1154 ssl_crypto_x509_ssl_flush_cached_client_CA(ssl);
1158 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x509) {
1159 check_ssl_ctx_x509_method(ctx);
1160 if (!add_client_CA(&ctx->client_CA, x509, ctx->pool)) {
1164 ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(ctx);
1168 static int do_client_cert_cb(SSL *ssl, void *arg) {
1169 if (ssl_has_certificate(ssl) || ssl->ctx->client_cert_cb == NULL) {
1174 EVP_PKEY *pkey = NULL;
1175 int ret = ssl->ctx->client_cert_cb(ssl, &x509, &pkey);
1179 UniquePtr<X509> free_x509(x509);
1180 UniquePtr<EVP_PKEY> free_pkey(pkey);
1183 if (!SSL_use_certificate(ssl, x509) ||
1184 !SSL_use_PrivateKey(ssl, pkey)) {
1192 void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, int (*cb)(SSL *ssl,
1194 EVP_PKEY **out_pkey)) {
1195 check_ssl_ctx_x509_method(ctx);
1196 // Emulate the old client certificate callback with the new one.
1197 SSL_CTX_set_cert_cb(ctx, do_client_cert_cb, NULL);
1198 ctx->client_cert_cb = cb;
1201 static int set_cert_store(X509_STORE **store_ptr, X509_STORE *new_store,
1203 X509_STORE_free(*store_ptr);
1204 *store_ptr = new_store;
1206 if (new_store != NULL && take_ref) {
1207 X509_STORE_up_ref(new_store);
1213 int SSL_get_ex_data_X509_STORE_CTX_idx(void) {
1214 // The ex_data index to go from |X509_STORE_CTX| to |SSL| always uses the
1215 // reserved app_data slot. Before ex_data was introduced, app_data was used.
1216 // Avoid breaking any software which assumes |X509_STORE_CTX_get_app_data|
1221 int SSL_CTX_set0_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) {
1222 check_ssl_ctx_x509_method(ctx);
1223 return set_cert_store(&ctx->cert->verify_store, store, 0);
1226 int SSL_CTX_set1_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) {
1227 check_ssl_ctx_x509_method(ctx);
1228 return set_cert_store(&ctx->cert->verify_store, store, 1);
1231 int SSL_set0_verify_cert_store(SSL *ssl, X509_STORE *store) {
1232 check_ssl_x509_method(ssl);
1233 return set_cert_store(&ssl->cert->verify_store, store, 0);
1236 int SSL_set1_verify_cert_store(SSL *ssl, X509_STORE *store) {
1237 check_ssl_x509_method(ssl);
1238 return set_cert_store(&ssl->cert->verify_store, store, 1);
1241 int SSL_alert_from_verify_result(long result) {
1243 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
1244 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
1245 case X509_V_ERR_INVALID_CA:
1246 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
1247 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
1248 case X509_V_ERR_UNABLE_TO_GET_CRL:
1249 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
1250 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
1251 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
1252 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
1253 return SSL_AD_UNKNOWN_CA;
1255 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
1256 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
1257 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
1258 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
1259 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
1260 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
1261 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
1262 case X509_V_ERR_CERT_UNTRUSTED:
1263 case X509_V_ERR_CERT_REJECTED:
1264 case X509_V_ERR_HOSTNAME_MISMATCH:
1265 case X509_V_ERR_EMAIL_MISMATCH:
1266 case X509_V_ERR_IP_ADDRESS_MISMATCH:
1267 return SSL_AD_BAD_CERTIFICATE;
1269 case X509_V_ERR_CERT_SIGNATURE_FAILURE:
1270 case X509_V_ERR_CRL_SIGNATURE_FAILURE:
1271 return SSL_AD_DECRYPT_ERROR;
1273 case X509_V_ERR_CERT_HAS_EXPIRED:
1274 case X509_V_ERR_CERT_NOT_YET_VALID:
1275 case X509_V_ERR_CRL_HAS_EXPIRED:
1276 case X509_V_ERR_CRL_NOT_YET_VALID:
1277 return SSL_AD_CERTIFICATE_EXPIRED;
1279 case X509_V_ERR_CERT_REVOKED:
1280 return SSL_AD_CERTIFICATE_REVOKED;
1282 case X509_V_ERR_UNSPECIFIED:
1283 case X509_V_ERR_OUT_OF_MEM:
1284 case X509_V_ERR_INVALID_CALL:
1285 case X509_V_ERR_STORE_LOOKUP:
1286 return SSL_AD_INTERNAL_ERROR;
1288 case X509_V_ERR_APPLICATION_VERIFICATION:
1289 return SSL_AD_HANDSHAKE_FAILURE;
1291 case X509_V_ERR_INVALID_PURPOSE:
1292 return SSL_AD_UNSUPPORTED_CERTIFICATE;
1295 return SSL_AD_CERTIFICATE_UNKNOWN;