2 * ! \file ssl/ssl_cert.c
4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
60 /* ====================================================================
61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
67 * 1. Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in
72 * the documentation and/or other materials provided with the
75 * 3. All advertising materials mentioning features or use of this
76 * software must display the following acknowledgment:
77 * "This product includes software developed by the OpenSSL Project
78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81 * endorse or promote products derived from this software without
82 * prior written permission. For written permission, please contact
83 * openssl-core@openssl.org.
85 * 5. Products derived from this software may not be called "OpenSSL"
86 * nor may "OpenSSL" appear in their names without prior written
87 * permission of the OpenSSL Project.
89 * 6. Redistributions of any form whatsoever must retain the following
91 * "This product includes software developed by the OpenSSL Project
92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105 * OF THE POSSIBILITY OF SUCH DAMAGE.
106 * ====================================================================
108 * This product includes cryptographic software written by Eric Young
109 * (eay@cryptsoft.com). This product includes software written by Tim
110 * Hudson (tjh@cryptsoft.com).
113 /* ====================================================================
114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115 * ECC cipher suite support in OpenSSL originally developed by
116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
122 #ifndef NO_SYS_TYPES_H
123 # include <sys/types.h>
127 #include <openssl/objects.h>
128 #include <openssl/bio.h>
129 #include <openssl/pem.h>
130 #include <openssl/x509v3.h>
131 #ifndef OPENSSL_NO_DH
132 # include <openssl/dh.h>
134 #include <openssl/bn.h>
135 #include "ssl_locl.h"
137 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
139 static volatile int ssl_x509_store_ctx_idx = -1;
140 int got_write_lock = 0;
142 if (((size_t)&ssl_x509_store_ctx_idx &
143 (sizeof(ssl_x509_store_ctx_idx) - 1))
144 == 0) { /* check alignment, practically always true */
147 if ((ret = ssl_x509_store_ctx_idx) < 0) {
148 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
149 if ((ret = ssl_x509_store_ctx_idx) < 0) {
150 ret = ssl_x509_store_ctx_idx =
151 X509_STORE_CTX_get_ex_new_index(0,
152 "SSL for verify callback",
155 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
159 } else { /* commonly eliminated */
161 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
163 if (ssl_x509_store_ctx_idx < 0) {
164 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
165 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
168 if (ssl_x509_store_ctx_idx < 0) {
169 ssl_x509_store_ctx_idx =
170 X509_STORE_CTX_get_ex_new_index(0,
171 "SSL for verify callback",
177 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
179 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
181 return ssl_x509_store_ctx_idx;
185 void ssl_cert_set_default_md(CERT *cert)
187 /* Set digest values to defaults */
188 #ifndef OPENSSL_NO_DSA
189 cert->pkeys[SSL_PKEY_DSA_SIGN].digest = EVP_sha1();
191 #ifndef OPENSSL_NO_RSA
192 cert->pkeys[SSL_PKEY_RSA_SIGN].digest = EVP_sha1();
193 cert->pkeys[SSL_PKEY_RSA_ENC].digest = EVP_sha1();
195 #ifndef OPENSSL_NO_ECDSA
196 cert->pkeys[SSL_PKEY_ECC].digest = EVP_sha1();
200 CERT *ssl_cert_new(void)
204 ret = (CERT *)OPENSSL_malloc(sizeof(CERT));
206 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
209 memset(ret, 0, sizeof(CERT));
211 ret->key = &(ret->pkeys[SSL_PKEY_RSA_ENC]);
213 ssl_cert_set_default_md(ret);
217 CERT *ssl_cert_dup(CERT *cert)
222 ret = (CERT *)OPENSSL_malloc(sizeof(CERT));
224 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
228 memset(ret, 0, sizeof(CERT));
231 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]];
233 * or ret->key = ret->pkeys + (cert->key - cert->pkeys), if you find that
237 ret->valid = cert->valid;
238 ret->mask_k = cert->mask_k;
239 ret->mask_a = cert->mask_a;
240 ret->export_mask_k = cert->export_mask_k;
241 ret->export_mask_a = cert->export_mask_a;
243 #ifndef OPENSSL_NO_RSA
244 if (cert->rsa_tmp != NULL) {
245 RSA_up_ref(cert->rsa_tmp);
246 ret->rsa_tmp = cert->rsa_tmp;
248 ret->rsa_tmp_cb = cert->rsa_tmp_cb;
251 #ifndef OPENSSL_NO_DH
252 if (cert->dh_tmp != NULL) {
253 ret->dh_tmp = DHparams_dup(cert->dh_tmp);
254 if (ret->dh_tmp == NULL) {
255 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB);
258 if (cert->dh_tmp->priv_key) {
259 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key);
261 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
264 ret->dh_tmp->priv_key = b;
266 if (cert->dh_tmp->pub_key) {
267 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key);
269 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
272 ret->dh_tmp->pub_key = b;
275 ret->dh_tmp_cb = cert->dh_tmp_cb;
278 #ifndef OPENSSL_NO_ECDH
279 if (cert->ecdh_tmp) {
280 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp);
281 if (ret->ecdh_tmp == NULL) {
282 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB);
286 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb;
287 ret->ecdh_tmp_auto = cert->ecdh_tmp_auto;
290 for (i = 0; i < SSL_PKEY_NUM; i++) {
291 CERT_PKEY *cpk = cert->pkeys + i;
292 CERT_PKEY *rpk = ret->pkeys + i;
293 if (cpk->x509 != NULL) {
294 rpk->x509 = cpk->x509;
295 CRYPTO_add(&rpk->x509->references, 1, CRYPTO_LOCK_X509);
298 if (cpk->privatekey != NULL) {
299 rpk->privatekey = cpk->privatekey;
300 CRYPTO_add(&cpk->privatekey->references, 1, CRYPTO_LOCK_EVP_PKEY);
304 rpk->chain = X509_chain_up_ref(cpk->chain);
306 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
310 rpk->valid_flags = 0;
311 #ifndef OPENSSL_NO_TLSEXT
312 if (cert->pkeys[i].serverinfo != NULL) {
313 /* Just copy everything. */
314 ret->pkeys[i].serverinfo =
315 OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
316 if (ret->pkeys[i].serverinfo == NULL) {
317 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
320 ret->pkeys[i].serverinfo_length =
321 cert->pkeys[i].serverinfo_length;
322 memcpy(ret->pkeys[i].serverinfo,
323 cert->pkeys[i].serverinfo,
324 cert->pkeys[i].serverinfo_length);
330 * Set digests to defaults. NB: we don't copy existing values as they
331 * will be set during handshake.
333 ssl_cert_set_default_md(ret);
334 /* Peer sigalgs set to NULL as we get these from handshake too */
335 ret->peer_sigalgs = NULL;
336 ret->peer_sigalgslen = 0;
337 /* Configured sigalgs however we copy across */
339 if (cert->conf_sigalgs) {
340 ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen);
341 if (!ret->conf_sigalgs)
343 memcpy(ret->conf_sigalgs, cert->conf_sigalgs, cert->conf_sigalgslen);
344 ret->conf_sigalgslen = cert->conf_sigalgslen;
346 ret->conf_sigalgs = NULL;
348 if (cert->client_sigalgs) {
349 ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen);
350 if (!ret->client_sigalgs)
352 memcpy(ret->client_sigalgs, cert->client_sigalgs,
353 cert->client_sigalgslen);
354 ret->client_sigalgslen = cert->client_sigalgslen;
356 ret->client_sigalgs = NULL;
357 /* Shared sigalgs also NULL */
358 ret->shared_sigalgs = NULL;
359 /* Copy any custom client certificate types */
361 ret->ctypes = OPENSSL_malloc(cert->ctype_num);
364 memcpy(ret->ctypes, cert->ctypes, cert->ctype_num);
365 ret->ctype_num = cert->ctype_num;
368 ret->cert_flags = cert->cert_flags;
370 ret->cert_cb = cert->cert_cb;
371 ret->cert_cb_arg = cert->cert_cb_arg;
373 if (cert->verify_store) {
374 CRYPTO_add(&cert->verify_store->references, 1,
375 CRYPTO_LOCK_X509_STORE);
376 ret->verify_store = cert->verify_store;
379 if (cert->chain_store) {
380 CRYPTO_add(&cert->chain_store->references, 1, CRYPTO_LOCK_X509_STORE);
381 ret->chain_store = cert->chain_store;
384 ret->ciphers_raw = NULL;
386 #ifndef OPENSSL_NO_TLSEXT
387 if (!custom_exts_copy(&ret->cli_ext, &cert->cli_ext))
389 if (!custom_exts_copy(&ret->srv_ext, &cert->srv_ext))
396 #ifndef OPENSSL_NO_RSA
397 if (ret->rsa_tmp != NULL)
398 RSA_free(ret->rsa_tmp);
400 #ifndef OPENSSL_NO_DH
401 if (ret->dh_tmp != NULL)
402 DH_free(ret->dh_tmp);
404 #ifndef OPENSSL_NO_ECDH
405 if (ret->ecdh_tmp != NULL)
406 EC_KEY_free(ret->ecdh_tmp);
409 #ifndef OPENSSL_NO_TLSEXT
410 custom_exts_free(&ret->cli_ext);
411 custom_exts_free(&ret->srv_ext);
414 ssl_cert_clear_certs(ret);
420 /* Free up and clear all certificates and chains */
422 void ssl_cert_clear_certs(CERT *c)
427 for (i = 0; i < SSL_PKEY_NUM; i++) {
428 CERT_PKEY *cpk = c->pkeys + i;
430 X509_free(cpk->x509);
433 if (cpk->privatekey) {
434 EVP_PKEY_free(cpk->privatekey);
435 cpk->privatekey = NULL;
438 sk_X509_pop_free(cpk->chain, X509_free);
441 #ifndef OPENSSL_NO_TLSEXT
442 if (cpk->serverinfo) {
443 OPENSSL_free(cpk->serverinfo);
444 cpk->serverinfo = NULL;
445 cpk->serverinfo_length = 0;
448 /* Clear all flags apart from explicit sign */
449 cpk->valid_flags &= CERT_PKEY_EXPLICIT_SIGN;
453 void ssl_cert_free(CERT *c)
460 i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT);
462 REF_PRINT("CERT", c);
468 fprintf(stderr, "ssl_cert_free, bad reference count\n");
473 #ifndef OPENSSL_NO_RSA
475 RSA_free(c->rsa_tmp);
477 #ifndef OPENSSL_NO_DH
481 #ifndef OPENSSL_NO_ECDH
483 EC_KEY_free(c->ecdh_tmp);
486 ssl_cert_clear_certs(c);
488 OPENSSL_free(c->peer_sigalgs);
490 OPENSSL_free(c->conf_sigalgs);
491 if (c->client_sigalgs)
492 OPENSSL_free(c->client_sigalgs);
493 if (c->shared_sigalgs)
494 OPENSSL_free(c->shared_sigalgs);
496 OPENSSL_free(c->ctypes);
498 X509_STORE_free(c->verify_store);
500 X509_STORE_free(c->chain_store);
502 OPENSSL_free(c->ciphers_raw);
503 #ifndef OPENSSL_NO_TLSEXT
504 custom_exts_free(&c->cli_ext);
505 custom_exts_free(&c->srv_ext);
506 if (c->alpn_proposed)
507 OPENSSL_free(c->alpn_proposed);
512 int ssl_cert_inst(CERT **o)
515 * Create a CERT if there isn't already one (which cannot really happen,
516 * as it is initially created in SSL_CTX_new; but the earlier code
517 * usually allows for that one being non-existant, so we follow that
518 * behaviour, as it might turn out that there actually is a reason for it
519 * -- but I'm not sure that *all* of the existing code could cope with
520 * s->cert being NULL, otherwise we could do without the initialization
525 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER);
529 if ((*o = ssl_cert_new()) == NULL) {
530 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE);
537 int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain)
539 CERT_PKEY *cpk = c->key;
543 sk_X509_pop_free(cpk->chain, X509_free);
548 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain)
550 STACK_OF(X509) *dchain;
552 return ssl_cert_set0_chain(c, NULL);
553 dchain = X509_chain_up_ref(chain);
556 if (!ssl_cert_set0_chain(c, dchain)) {
557 sk_X509_pop_free(dchain, X509_free);
563 int ssl_cert_add0_chain_cert(CERT *c, X509 *x)
565 CERT_PKEY *cpk = c->key;
569 cpk->chain = sk_X509_new_null();
570 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
575 int ssl_cert_add1_chain_cert(CERT *c, X509 *x)
577 if (!ssl_cert_add0_chain_cert(c, x))
579 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
583 int ssl_cert_select_current(CERT *c, X509 *x)
588 for (i = 0; i < SSL_PKEY_NUM; i++) {
589 CERT_PKEY *cpk = c->pkeys + i;
590 if (cpk->x509 == x && cpk->privatekey) {
596 for (i = 0; i < SSL_PKEY_NUM; i++) {
597 CERT_PKEY *cpk = c->pkeys + i;
598 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
606 int ssl_cert_set_current(CERT *c, long op)
611 if (op == SSL_CERT_SET_FIRST)
613 else if (op == SSL_CERT_SET_NEXT) {
614 idx = (int)(c->key - c->pkeys + 1);
615 if (idx >= SSL_PKEY_NUM)
619 for (i = idx; i < SSL_PKEY_NUM; i++) {
620 CERT_PKEY *cpk = c->pkeys + i;
621 if (cpk->x509 && cpk->privatekey) {
629 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
632 c->cert_cb_arg = arg;
635 SESS_CERT *ssl_sess_cert_new(void)
639 ret = OPENSSL_malloc(sizeof *ret);
641 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE);
645 memset(ret, 0, sizeof *ret);
646 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]);
652 void ssl_sess_cert_free(SESS_CERT *sc)
659 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT);
661 REF_PRINT("SESS_CERT", sc);
667 fprintf(stderr, "ssl_sess_cert_free, bad reference count\n");
673 if (sc->cert_chain != NULL)
674 sk_X509_pop_free(sc->cert_chain, X509_free);
675 for (i = 0; i < SSL_PKEY_NUM; i++) {
676 if (sc->peer_pkeys[i].x509 != NULL)
677 X509_free(sc->peer_pkeys[i].x509);
678 #if 0 /* We don't have the peer's private key.
679 * These lines are just * here as a reminder
680 * that we're still using a
681 * not-quite-appropriate * data structure. */
682 if (sc->peer_pkeys[i].privatekey != NULL)
683 EVP_PKEY_free(sc->peer_pkeys[i].privatekey);
687 #ifndef OPENSSL_NO_RSA
688 if (sc->peer_rsa_tmp != NULL)
689 RSA_free(sc->peer_rsa_tmp);
691 #ifndef OPENSSL_NO_DH
692 if (sc->peer_dh_tmp != NULL)
693 DH_free(sc->peer_dh_tmp);
695 #ifndef OPENSSL_NO_ECDH
696 if (sc->peer_ecdh_tmp != NULL)
697 EC_KEY_free(sc->peer_ecdh_tmp);
703 int ssl_set_peer_cert_type(SESS_CERT *sc, int type)
705 sc->peer_cert_type = type;
709 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
713 X509_STORE *verify_store;
716 if (s->cert->verify_store)
717 verify_store = s->cert->verify_store;
719 verify_store = s->ctx->cert_store;
721 if ((sk == NULL) || (sk_X509_num(sk) == 0))
724 x = sk_X509_value(sk, 0);
725 if (!X509_STORE_CTX_init(&ctx, verify_store, x, sk)) {
726 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
729 /* Set suite B flags if needed */
730 X509_STORE_CTX_set_flags(&ctx, tls1_suiteb(s));
732 if (SSL_get_verify_depth(s) >= 0)
733 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s));
735 X509_STORE_CTX_set_ex_data(&ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s);
738 * We need to inherit the verify parameters. These can be determined by
739 * the context: if its a server it will verify SSL client certificates or
743 X509_STORE_CTX_set_default(&ctx, s->server ? "ssl_client" : "ssl_server");
745 * Anything non-default in "param" should overwrite anything in the ctx.
747 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param);
749 if (s->verify_callback)
750 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback);
752 if (s->ctx->app_verify_callback != NULL)
753 #if 1 /* new with OpenSSL 0.9.7 */
754 i = s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg);
756 i = s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */
759 #ifndef OPENSSL_NO_X509_VERIFY
760 i = X509_verify_cert(&ctx);
763 ctx.error = X509_V_ERR_APPLICATION_VERIFICATION;
764 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, SSL_R_NO_VERIFY_CALLBACK);
768 s->verify_result = ctx.error;
769 X509_STORE_CTX_cleanup(&ctx);
774 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,
775 STACK_OF(X509_NAME) *name_list)
777 if (*ca_list != NULL)
778 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
780 *ca_list = name_list;
783 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk)
786 STACK_OF(X509_NAME) *ret;
789 ret = sk_X509_NAME_new_null();
790 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
791 name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
792 if ((name == NULL) || !sk_X509_NAME_push(ret, name)) {
793 sk_X509_NAME_pop_free(ret, X509_NAME_free);
800 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
802 set_client_CA_list(&(s->client_CA), name_list);
805 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
807 set_client_CA_list(&(ctx->client_CA), name_list);
810 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
812 return (ctx->client_CA);
815 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
817 if (s->type == SSL_ST_CONNECT) { /* we are in the client */
818 if (((s->version >> 8) == SSL3_VERSION_MAJOR) && (s->s3 != NULL))
819 return (s->s3->tmp.ca_names);
823 if (s->client_CA != NULL)
824 return (s->client_CA);
826 return (s->ctx->client_CA);
830 static int add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x)
836 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL))
839 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
842 if (!sk_X509_NAME_push(*sk, name)) {
843 X509_NAME_free(name);
849 int SSL_add_client_CA(SSL *ssl, X509 *x)
851 return (add_client_CA(&(ssl->client_CA), x));
854 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
856 return (add_client_CA(&(ctx->client_CA), x));
859 static int xname_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
861 return (X509_NAME_cmp(*a, *b));
864 #ifndef OPENSSL_NO_STDIO
866 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
867 * it doesn't really have anything to do with clients (except that a common use
868 * for a stack of CAs is to send it to the client). Actually, it doesn't have
869 * much to do with CAs, either, since it will load any old cert.
870 * \param file the file containing one or more certs.
871 * \return a ::STACK containing the certs.
873 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
877 X509_NAME *xn = NULL;
878 STACK_OF(X509_NAME) *ret = NULL, *sk;
880 sk = sk_X509_NAME_new(xname_cmp);
882 in = BIO_new(BIO_s_file_internal());
884 if ((sk == NULL) || (in == NULL)) {
885 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
889 if (!BIO_read_filename(in, file))
893 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
896 ret = sk_X509_NAME_new_null();
898 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
902 if ((xn = X509_get_subject_name(x)) == NULL)
904 /* check for duplicates */
905 xn = X509_NAME_dup(xn);
908 if (sk_X509_NAME_find(sk, xn) >= 0)
911 sk_X509_NAME_push(sk, xn);
912 sk_X509_NAME_push(ret, xn);
919 sk_X509_NAME_pop_free(ret, X509_NAME_free);
923 sk_X509_NAME_free(sk);
935 * Add a file of certs to a stack.
936 * \param stack the stack to add to.
937 * \param file the file to add from. All certs in this file that are not
938 * already in the stack will be added.
939 * \return 1 for success, 0 for failure. Note that in the case of failure some
940 * certs may have been added to \c stack.
943 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
948 X509_NAME *xn = NULL;
950 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
952 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp);
954 in = BIO_new(BIO_s_file_internal());
957 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,
958 ERR_R_MALLOC_FAILURE);
962 if (!BIO_read_filename(in, file))
966 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
968 if ((xn = X509_get_subject_name(x)) == NULL)
970 xn = X509_NAME_dup(xn);
973 if (sk_X509_NAME_find(stack, xn) >= 0)
976 sk_X509_NAME_push(stack, xn);
990 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
996 * Add a directory of certs to a stack.
997 * \param stack the stack to append to.
998 * \param dir the directory to append from. All files in this directory will be
999 * examined as potential certs. Any that are acceptable to
1000 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
1002 * \return 1 for success, 0 for failure. Note that in the case of failure some
1003 * certs may have been added to \c stack.
1006 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
1009 OPENSSL_DIR_CTX *d = NULL;
1010 const char *filename;
1013 CRYPTO_w_lock(CRYPTO_LOCK_READDIR);
1015 /* Note that a side effect is that the CAs will be sorted by name */
1017 while ((filename = OPENSSL_DIR_read(&d, dir))) {
1021 if (strlen(dir) + strlen(filename) + 2 > sizeof buf) {
1022 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
1023 SSL_R_PATH_TOO_LONG);
1026 #ifdef OPENSSL_SYS_VMS
1027 r = BIO_snprintf(buf, sizeof buf, "%s%s", dir, filename);
1029 r = BIO_snprintf(buf, sizeof buf, "%s/%s", dir, filename);
1031 if (r <= 0 || r >= (int)sizeof(buf))
1033 if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
1038 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
1039 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
1040 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
1048 OPENSSL_DIR_end(&d);
1049 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR);
1053 /* Add a certificate to a BUF_MEM structure */
1055 static int ssl_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x)
1060 n = i2d_X509(x, NULL);
1061 if (n < 0 || !BUF_MEM_grow_clean(buf, (int)(n + (*l) + 3))) {
1062 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF, ERR_R_BUF_LIB);
1065 p = (unsigned char *)&(buf->data[*l]);
1067 n = i2d_X509(x, &p);
1069 /* Shouldn't happen */
1070 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF, ERR_R_BUF_LIB);
1078 /* Add certificate chain to internal SSL BUF_MEM strcuture */
1079 int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l)
1081 BUF_MEM *buf = s->init_buf;
1086 STACK_OF(X509) *extra_certs;
1087 X509_STORE *chain_store;
1094 if (s->cert->chain_store)
1095 chain_store = s->cert->chain_store;
1097 chain_store = s->ctx->cert_store;
1100 * If we have a certificate specific chain use it, else use parent ctx.
1102 if (cpk && cpk->chain)
1103 extra_certs = cpk->chain;
1105 extra_certs = s->ctx->extra_certs;
1107 if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || extra_certs)
1112 /* TLSv1 sends a chain with nothing in it, instead of an alert */
1113 if (!BUF_MEM_grow_clean(buf, 10)) {
1114 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_BUF_LIB);
1119 if (!ssl_add_cert_to_buf(buf, l, x))
1122 X509_STORE_CTX xs_ctx;
1124 if (!X509_STORE_CTX_init(&xs_ctx, chain_store, x, NULL)) {
1125 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_X509_LIB);
1128 X509_verify_cert(&xs_ctx);
1129 /* Don't leave errors in the queue */
1131 for (i = 0; i < sk_X509_num(xs_ctx.chain); i++) {
1132 x = sk_X509_value(xs_ctx.chain, i);
1134 if (!ssl_add_cert_to_buf(buf, l, x)) {
1135 X509_STORE_CTX_cleanup(&xs_ctx);
1139 X509_STORE_CTX_cleanup(&xs_ctx);
1142 for (i = 0; i < sk_X509_num(extra_certs); i++) {
1143 x = sk_X509_value(extra_certs, i);
1144 if (!ssl_add_cert_to_buf(buf, l, x))
1151 /* Build a certificate chain for current certificate */
1152 int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags)
1154 CERT_PKEY *cpk = c->key;
1155 X509_STORE_CTX xs_ctx;
1156 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
1159 unsigned long error;
1162 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
1165 /* Rearranging and check the chain: add everything to a store */
1166 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
1167 chain_store = X509_STORE_new();
1170 for (i = 0; i < sk_X509_num(cpk->chain); i++) {
1171 x = sk_X509_value(cpk->chain, i);
1172 if (!X509_STORE_add_cert(chain_store, x)) {
1173 error = ERR_peek_last_error();
1174 if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
1175 ERR_GET_REASON(error) !=
1176 X509_R_CERT_ALREADY_IN_HASH_TABLE)
1181 /* Add EE cert too: it might be self signed */
1182 if (!X509_STORE_add_cert(chain_store, cpk->x509)) {
1183 error = ERR_peek_last_error();
1184 if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
1185 ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
1191 chain_store = c->chain_store;
1193 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
1194 untrusted = cpk->chain;
1197 if (!X509_STORE_CTX_init(&xs_ctx, chain_store, cpk->x509, untrusted)) {
1198 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
1201 /* Set suite B flags if needed */
1202 X509_STORE_CTX_set_flags(&xs_ctx,
1203 c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
1205 i = X509_verify_cert(&xs_ctx);
1206 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
1207 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
1213 chain = X509_STORE_CTX_get1_chain(&xs_ctx);
1215 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
1216 i = X509_STORE_CTX_get_error(&xs_ctx);
1217 ERR_add_error_data(2, "Verify error:",
1218 X509_verify_cert_error_string(i));
1220 X509_STORE_CTX_cleanup(&xs_ctx);
1223 X509_STORE_CTX_cleanup(&xs_ctx);
1225 sk_X509_pop_free(cpk->chain, X509_free);
1226 /* Remove EE certificate from chain */
1227 x = sk_X509_shift(chain);
1229 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
1230 if (sk_X509_num(chain) > 0) {
1231 /* See if last cert is self signed */
1232 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
1233 X509_check_purpose(x, -1, 0);
1234 if (x->ex_flags & EXFLAG_SS) {
1235 x = sk_X509_pop(chain);
1244 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
1245 X509_STORE_free(chain_store);
1250 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
1252 X509_STORE **pstore;
1254 pstore = &c->chain_store;
1256 pstore = &c->verify_store;
1258 X509_STORE_free(*pstore);
1261 CRYPTO_add(&store->references, 1, CRYPTO_LOCK_X509_STORE);