1 /*! \file ssl/ssl_cert.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
120 #ifndef NO_SYS_TYPES_H
121 # include <sys/types.h>
125 #include <openssl/objects.h>
126 #include <openssl/bio.h>
127 #include <openssl/pem.h>
128 #include <openssl/x509v3.h>
129 #ifndef OPENSSL_NO_DH
130 #include <openssl/dh.h>
132 #include <openssl/bn.h>
133 #include "ssl_locl.h"
135 static int ssl_security_default_callback(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex);
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 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
144 if (ssl_x509_store_ctx_idx < 0)
146 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
147 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
150 if (ssl_x509_store_ctx_idx < 0)
152 ssl_x509_store_ctx_idx=X509_STORE_CTX_get_ex_new_index(
153 0,"SSL for verify callback",NULL,NULL,NULL);
158 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
160 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
162 return ssl_x509_store_ctx_idx;
165 void ssl_cert_set_default_md(CERT *cert)
167 /* Set digest values to defaults */
168 #ifndef OPENSSL_NO_DSA
169 cert->pkeys[SSL_PKEY_DSA_SIGN].digest = EVP_sha1();
171 #ifndef OPENSSL_NO_RSA
172 cert->pkeys[SSL_PKEY_RSA_SIGN].digest = EVP_sha1();
173 cert->pkeys[SSL_PKEY_RSA_ENC].digest = EVP_sha1();
175 #ifndef OPENSSL_NO_ECDSA
176 cert->pkeys[SSL_PKEY_ECC].digest = EVP_sha1();
180 CERT *ssl_cert_new(void)
184 ret=(CERT *)OPENSSL_malloc(sizeof(CERT));
187 SSLerr(SSL_F_SSL_CERT_NEW,ERR_R_MALLOC_FAILURE);
190 memset(ret,0,sizeof(CERT));
192 ret->key= &(ret->pkeys[SSL_PKEY_RSA_ENC]);
194 ssl_cert_set_default_md(ret);
195 ret->sec_cb = ssl_security_default_callback;
196 ret->sec_level = OPENSSL_TLS_SECURITY_LEVEL;
201 CERT *ssl_cert_dup(CERT *cert)
206 ret = (CERT *)OPENSSL_malloc(sizeof(CERT));
209 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
213 memset(ret, 0, sizeof(CERT));
215 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]];
216 /* or ret->key = ret->pkeys + (cert->key - cert->pkeys),
217 * if you find that more readable */
219 ret->valid = cert->valid;
220 ret->mask_k = cert->mask_k;
221 ret->mask_a = cert->mask_a;
222 ret->export_mask_k = cert->export_mask_k;
223 ret->export_mask_a = cert->export_mask_a;
225 #ifndef OPENSSL_NO_RSA
226 if (cert->rsa_tmp != NULL)
228 RSA_up_ref(cert->rsa_tmp);
229 ret->rsa_tmp = cert->rsa_tmp;
231 ret->rsa_tmp_cb = cert->rsa_tmp_cb;
234 #ifndef OPENSSL_NO_DH
235 if (cert->dh_tmp != NULL)
237 ret->dh_tmp = DHparams_dup(cert->dh_tmp);
238 if (ret->dh_tmp == NULL)
240 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB);
243 if (cert->dh_tmp->priv_key)
245 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key);
248 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
251 ret->dh_tmp->priv_key = b;
253 if (cert->dh_tmp->pub_key)
255 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key);
258 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
261 ret->dh_tmp->pub_key = b;
264 ret->dh_tmp_cb = cert->dh_tmp_cb;
265 ret->dh_tmp_auto = cert->dh_tmp_auto;
268 #ifndef OPENSSL_NO_ECDH
271 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp);
272 if (ret->ecdh_tmp == NULL)
274 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB);
278 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb;
279 ret->ecdh_tmp_auto = cert->ecdh_tmp_auto;
282 for (i = 0; i < SSL_PKEY_NUM; i++)
284 CERT_PKEY *cpk = cert->pkeys + i;
285 CERT_PKEY *rpk = ret->pkeys + i;
286 if (cpk->x509 != NULL)
288 rpk->x509 = cpk->x509;
289 CRYPTO_add(&rpk->x509->references, 1, CRYPTO_LOCK_X509);
292 if (cpk->privatekey != NULL)
294 rpk->privatekey = cpk->privatekey;
295 CRYPTO_add(&cpk->privatekey->references, 1,
296 CRYPTO_LOCK_EVP_PKEY);
300 /* If there was anything special to do for
301 * certain types of keys, we'd do it here.
302 * (Nothing at the moment, I think.) */
304 case SSL_PKEY_RSA_ENC:
305 case SSL_PKEY_RSA_SIGN:
306 /* We have an RSA key. */
309 case SSL_PKEY_DSA_SIGN:
310 /* We have a DSA key. */
313 case SSL_PKEY_DH_RSA:
314 case SSL_PKEY_DH_DSA:
315 /* We have a DH key. */
319 /* We have an ECC key */
324 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG);
330 rpk->chain = X509_chain_up_ref(cpk->chain);
333 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
337 rpk->valid_flags = 0;
338 #ifndef OPENSSL_NO_TLSEXT
339 if (cert->pkeys[i].serverinfo != NULL)
341 /* Just copy everything. */
342 ret->pkeys[i].serverinfo =
343 OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
344 if (ret->pkeys[i].serverinfo == NULL)
346 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
349 ret->pkeys[i].serverinfo_length =
350 cert->pkeys[i].serverinfo_length;
351 memcpy(ret->pkeys[i].serverinfo,
352 cert->pkeys[i].serverinfo,
353 cert->pkeys[i].serverinfo_length);
359 /* Set digests to defaults. NB: we don't copy existing values as they
360 * will be set during handshake.
362 ssl_cert_set_default_md(ret);
363 /* Peer sigalgs set to NULL as we get these from handshake too */
364 ret->peer_sigalgs = NULL;
365 ret->peer_sigalgslen = 0;
366 /* Configured sigalgs however we copy across */
368 if (cert->conf_sigalgs)
370 ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen);
371 if (!ret->conf_sigalgs)
373 memcpy(ret->conf_sigalgs, cert->conf_sigalgs,
374 cert->conf_sigalgslen);
375 ret->conf_sigalgslen = cert->conf_sigalgslen;
378 ret->conf_sigalgs = NULL;
380 if (cert->client_sigalgs)
382 ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen);
383 if (!ret->client_sigalgs)
385 memcpy(ret->client_sigalgs, cert->client_sigalgs,
386 cert->client_sigalgslen);
387 ret->client_sigalgslen = cert->client_sigalgslen;
390 ret->client_sigalgs = NULL;
391 /* Shared sigalgs also NULL */
392 ret->shared_sigalgs = NULL;
393 /* Copy any custom client certificate types */
396 ret->ctypes = OPENSSL_malloc(cert->ctype_num);
399 memcpy(ret->ctypes, cert->ctypes, cert->ctype_num);
400 ret->ctype_num = cert->ctype_num;
403 ret->cert_flags = cert->cert_flags;
405 ret->cert_cb = cert->cert_cb;
406 ret->cert_cb_arg = cert->cert_cb_arg;
408 if (cert->verify_store)
410 CRYPTO_add(&cert->verify_store->references, 1, CRYPTO_LOCK_X509_STORE);
411 ret->verify_store = cert->verify_store;
414 if (cert->chain_store)
416 CRYPTO_add(&cert->chain_store->references, 1, CRYPTO_LOCK_X509_STORE);
417 ret->chain_store = cert->chain_store;
420 ret->ciphers_raw = NULL;
422 ret->sec_cb = cert->sec_cb;
423 ret->sec_level = cert->sec_level;
424 ret->sec_ex = cert->sec_ex;
428 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH)
431 #ifndef OPENSSL_NO_RSA
432 if (ret->rsa_tmp != NULL)
433 RSA_free(ret->rsa_tmp);
435 #ifndef OPENSSL_NO_DH
436 if (ret->dh_tmp != NULL)
437 DH_free(ret->dh_tmp);
439 #ifndef OPENSSL_NO_ECDH
440 if (ret->ecdh_tmp != NULL)
441 EC_KEY_free(ret->ecdh_tmp);
444 ssl_cert_clear_certs(ret);
449 /* Free up and clear all certificates and chains */
451 void ssl_cert_clear_certs(CERT *c)
456 for (i = 0; i<SSL_PKEY_NUM; i++)
458 CERT_PKEY *cpk = c->pkeys + i;
461 X509_free(cpk->x509);
466 EVP_PKEY_free(cpk->privatekey);
467 cpk->privatekey = NULL;
471 sk_X509_pop_free(cpk->chain, X509_free);
474 #ifndef OPENSSL_NO_TLSEXT
477 OPENSSL_free(cpk->serverinfo);
478 cpk->serverinfo = NULL;
479 cpk->serverinfo_length = 0;
482 /* Clear all flags apart from explicit sign */
483 cpk->valid_flags &= CERT_PKEY_EXPLICIT_SIGN;
487 void ssl_cert_free(CERT *c)
494 i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT);
502 fprintf(stderr,"ssl_cert_free, bad reference count\n");
507 #ifndef OPENSSL_NO_RSA
508 if (c->rsa_tmp) RSA_free(c->rsa_tmp);
510 #ifndef OPENSSL_NO_DH
511 if (c->dh_tmp) DH_free(c->dh_tmp);
513 #ifndef OPENSSL_NO_ECDH
514 if (c->ecdh_tmp) EC_KEY_free(c->ecdh_tmp);
517 ssl_cert_clear_certs(c);
519 OPENSSL_free(c->peer_sigalgs);
521 OPENSSL_free(c->conf_sigalgs);
522 if (c->client_sigalgs)
523 OPENSSL_free(c->client_sigalgs);
524 if (c->shared_sigalgs)
525 OPENSSL_free(c->shared_sigalgs);
527 OPENSSL_free(c->ctypes);
529 X509_STORE_free(c->verify_store);
531 X509_STORE_free(c->chain_store);
533 OPENSSL_free(c->ciphers_raw);
537 int ssl_cert_inst(CERT **o)
539 /* Create a CERT if there isn't already one
540 * (which cannot really happen, as it is initially created in
541 * SSL_CTX_new; but the earlier code usually allows for that one
542 * being non-existant, so we follow that behaviour, as it might
543 * turn out that there actually is a reason for it -- but I'm
544 * not sure that *all* of the existing code could cope with
545 * s->cert being NULL, otherwise we could do without the
546 * initialization in SSL_CTX_new).
551 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER);
556 if ((*o = ssl_cert_new()) == NULL)
558 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE);
565 int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
568 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
572 sk_X509_pop_free(cpk->chain, X509_free);
573 for (i = 0; i < sk_X509_num(chain); i++)
575 r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0);
578 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r);
586 int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
588 STACK_OF(X509) *dchain;
590 return ssl_cert_set0_chain(s, ctx, NULL);
591 dchain = X509_chain_up_ref(chain);
594 if (!ssl_cert_set0_chain(s, ctx, dchain))
596 sk_X509_pop_free(dchain, X509_free);
602 int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
605 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
608 r = ssl_security_cert(s, ctx, x, 0, 0);
611 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r);
615 cpk->chain = sk_X509_new_null();
616 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
621 int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
623 if (!ssl_cert_add0_chain_cert(s, ctx, x))
625 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
629 int ssl_cert_select_current(CERT *c, X509 *x)
634 for (i = 0; i < SSL_PKEY_NUM; i++)
636 CERT_PKEY *cpk = c->pkeys + i;
637 if (cpk->x509 == x && cpk->privatekey)
644 for (i = 0; i < SSL_PKEY_NUM; i++)
646 CERT_PKEY *cpk = c->pkeys + i;
647 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x))
656 int ssl_cert_set_current(CERT *c, long op)
661 if (op == SSL_CERT_SET_FIRST)
663 else if (op == SSL_CERT_SET_NEXT)
665 idx = (int)(c->key - c->pkeys + 1);
666 if (idx >= SSL_PKEY_NUM)
671 for (i = idx; i < SSL_PKEY_NUM; i++)
673 CERT_PKEY *cpk = c->pkeys + i;
674 if (cpk->x509 && cpk->privatekey)
683 void ssl_cert_set_cert_cb(CERT *c, int (*cb)(SSL *ssl, void *arg), void *arg)
686 c->cert_cb_arg = arg;
689 SESS_CERT *ssl_sess_cert_new(void)
693 ret = OPENSSL_malloc(sizeof *ret);
696 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE);
700 memset(ret, 0 ,sizeof *ret);
701 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]);
707 void ssl_sess_cert_free(SESS_CERT *sc)
714 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT);
716 REF_PRINT("SESS_CERT", sc);
723 fprintf(stderr,"ssl_sess_cert_free, bad reference count\n");
729 if (sc->cert_chain != NULL)
730 sk_X509_pop_free(sc->cert_chain, X509_free);
731 for (i = 0; i < SSL_PKEY_NUM; i++)
733 if (sc->peer_pkeys[i].x509 != NULL)
734 X509_free(sc->peer_pkeys[i].x509);
735 #if 0 /* We don't have the peer's private key. These lines are just
736 * here as a reminder that we're still using a not-quite-appropriate
738 if (sc->peer_pkeys[i].privatekey != NULL)
739 EVP_PKEY_free(sc->peer_pkeys[i].privatekey);
743 #ifndef OPENSSL_NO_RSA
744 if (sc->peer_rsa_tmp != NULL)
745 RSA_free(sc->peer_rsa_tmp);
747 #ifndef OPENSSL_NO_DH
748 if (sc->peer_dh_tmp != NULL)
749 DH_free(sc->peer_dh_tmp);
751 #ifndef OPENSSL_NO_ECDH
752 if (sc->peer_ecdh_tmp != NULL)
753 EC_KEY_free(sc->peer_ecdh_tmp);
759 int ssl_set_peer_cert_type(SESS_CERT *sc,int type)
761 sc->peer_cert_type = type;
765 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk)
769 X509_STORE *verify_store;
772 if (s->cert->verify_store)
773 verify_store = s->cert->verify_store;
775 verify_store = s->ctx->cert_store;
777 if ((sk == NULL) || (sk_X509_num(sk) == 0))
780 x=sk_X509_value(sk,0);
781 if(!X509_STORE_CTX_init(&ctx,verify_store,x,sk))
783 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,ERR_R_X509_LIB);
786 /* Set suite B flags if needed */
787 X509_STORE_CTX_set_flags(&ctx, tls1_suiteb(s));
789 if (SSL_get_verify_depth(s) >= 0)
790 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s));
792 X509_STORE_CTX_set_ex_data(&ctx,SSL_get_ex_data_X509_STORE_CTX_idx(),s);
794 /* We need to inherit the verify parameters. These can be determined by
795 * the context: if its a server it will verify SSL client certificates
799 X509_STORE_CTX_set_default(&ctx,
800 s->server ? "ssl_client" : "ssl_server");
801 /* Anything non-default in "param" should overwrite anything in the
804 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param);
806 if (s->verify_callback)
807 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback);
809 if (s->ctx->app_verify_callback != NULL)
810 #if 1 /* new with OpenSSL 0.9.7 */
811 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg);
813 i=s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */
817 #ifndef OPENSSL_NO_X509_VERIFY
818 i=X509_verify_cert(&ctx);
820 /* Dummy error calls so mkerr generates them */
821 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_EE_KEY_TOO_SMALL);
822 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_CA_KEY_TOO_SMALL);
823 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_CA_MD_TOO_WEAK);
826 i = ssl_security_cert_chain(s, ctx.chain, NULL, 1);
829 ctx.error=X509_V_ERR_APPLICATION_VERIFICATION;
830 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_NO_VERIFY_CALLBACK);
834 s->verify_result=ctx.error;
835 X509_STORE_CTX_cleanup(&ctx);
840 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,STACK_OF(X509_NAME) *name_list)
842 if (*ca_list != NULL)
843 sk_X509_NAME_pop_free(*ca_list,X509_NAME_free);
848 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk)
851 STACK_OF(X509_NAME) *ret;
854 ret=sk_X509_NAME_new_null();
855 for (i=0; i<sk_X509_NAME_num(sk); i++)
857 name=X509_NAME_dup(sk_X509_NAME_value(sk,i));
858 if ((name == NULL) || !sk_X509_NAME_push(ret,name))
860 sk_X509_NAME_pop_free(ret,X509_NAME_free);
867 void SSL_set_client_CA_list(SSL *s,STACK_OF(X509_NAME) *name_list)
869 set_client_CA_list(&(s->client_CA),name_list);
872 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,STACK_OF(X509_NAME) *name_list)
874 set_client_CA_list(&(ctx->client_CA),name_list);
877 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
879 return(ctx->client_CA);
882 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
884 if (s->type == SSL_ST_CONNECT)
885 { /* we are in the client */
886 if (((s->version>>8) == SSL3_VERSION_MAJOR) &&
888 return(s->s3->tmp.ca_names);
894 if (s->client_CA != NULL)
895 return(s->client_CA);
897 return(s->ctx->client_CA);
901 static int add_client_CA(STACK_OF(X509_NAME) **sk,X509 *x)
905 if (x == NULL) return(0);
906 if ((*sk == NULL) && ((*sk=sk_X509_NAME_new_null()) == NULL))
909 if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL)
912 if (!sk_X509_NAME_push(*sk,name))
914 X509_NAME_free(name);
920 int SSL_add_client_CA(SSL *ssl,X509 *x)
922 return(add_client_CA(&(ssl->client_CA),x));
925 int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x)
927 return(add_client_CA(&(ctx->client_CA),x));
930 static int xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
932 return(X509_NAME_cmp(*a,*b));
935 #ifndef OPENSSL_NO_STDIO
937 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
938 * it doesn't really have anything to do with clients (except that a common use
939 * for a stack of CAs is to send it to the client). Actually, it doesn't have
940 * much to do with CAs, either, since it will load any old cert.
941 * \param file the file containing one or more certs.
942 * \return a ::STACK containing the certs.
944 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
949 STACK_OF(X509_NAME) *ret = NULL,*sk;
951 sk=sk_X509_NAME_new(xname_cmp);
953 in=BIO_new(BIO_s_file_internal());
955 if ((sk == NULL) || (in == NULL))
957 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE);
961 if (!BIO_read_filename(in,file))
966 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL)
970 ret = sk_X509_NAME_new_null();
973 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE);
977 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
978 /* check for duplicates */
979 xn=X509_NAME_dup(xn);
980 if (xn == NULL) goto err;
981 if (sk_X509_NAME_find(sk,xn) >= 0)
985 sk_X509_NAME_push(sk,xn);
986 sk_X509_NAME_push(ret,xn);
993 if (ret != NULL) sk_X509_NAME_pop_free(ret,X509_NAME_free);
996 if (sk != NULL) sk_X509_NAME_free(sk);
997 if (in != NULL) BIO_free(in);
998 if (x != NULL) X509_free(x);
1006 * Add a file of certs to a stack.
1007 * \param stack the stack to add to.
1008 * \param file the file to add from. All certs in this file that are not
1009 * already in the stack will be added.
1010 * \return 1 for success, 0 for failure. Note that in the case of failure some
1011 * certs may have been added to \c stack.
1014 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
1021 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b);
1023 oldcmp=sk_X509_NAME_set_cmp_func(stack,xname_cmp);
1025 in=BIO_new(BIO_s_file_internal());
1029 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE);
1033 if (!BIO_read_filename(in,file))
1038 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL)
1040 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
1041 xn=X509_NAME_dup(xn);
1042 if (xn == NULL) goto err;
1043 if (sk_X509_NAME_find(stack,xn) >= 0)
1046 sk_X509_NAME_push(stack,xn);
1061 (void)sk_X509_NAME_set_cmp_func(stack,oldcmp);
1067 * Add a directory of certs to a stack.
1068 * \param stack the stack to append to.
1069 * \param dir the directory to append from. All files in this directory will be
1070 * examined as potential certs. Any that are acceptable to
1071 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
1073 * \return 1 for success, 0 for failure. Note that in the case of failure some
1074 * certs may have been added to \c stack.
1077 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
1080 OPENSSL_DIR_CTX *d = NULL;
1081 const char *filename;
1084 CRYPTO_w_lock(CRYPTO_LOCK_READDIR);
1086 /* Note that a side effect is that the CAs will be sorted by name */
1088 while((filename = OPENSSL_DIR_read(&d, dir)))
1093 if(strlen(dir)+strlen(filename)+2 > sizeof buf)
1095 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,SSL_R_PATH_TOO_LONG);
1099 #ifdef OPENSSL_SYS_VMS
1100 r = BIO_snprintf(buf,sizeof buf,"%s%s",dir,filename);
1102 r = BIO_snprintf(buf,sizeof buf,"%s/%s",dir,filename);
1104 if (r <= 0 || r >= (int)sizeof(buf))
1106 if(!SSL_add_file_cert_subjects_to_stack(stack,buf))
1112 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
1113 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
1114 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
1121 if (d) OPENSSL_DIR_end(&d);
1122 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR);
1126 /* Add a certificate to a BUF_MEM structure */
1128 static int ssl_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x)
1134 if (!BUF_MEM_grow_clean(buf,(int)(n+(*l)+3)))
1136 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF,ERR_R_BUF_LIB);
1139 p=(unsigned char *)&(buf->data[*l]);
1147 /* Add certificate chain to internal SSL BUF_MEM strcuture */
1148 int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l)
1150 BUF_MEM *buf = s->init_buf;
1154 STACK_OF(X509) *extra_certs;
1155 X509_STORE *chain_store;
1157 /* TLSv1 sends a chain with nothing in it, instead of an alert */
1158 if (!BUF_MEM_grow_clean(buf,10))
1160 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN,ERR_R_BUF_LIB);
1164 if (!cpk || !cpk->x509)
1169 /* If we have a certificate specific chain use it, else use
1173 extra_certs = cpk->chain;
1175 extra_certs = s->ctx->extra_certs;
1177 if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || extra_certs)
1179 else if (s->cert->chain_store)
1180 chain_store = s->cert->chain_store;
1182 chain_store = s->ctx->cert_store;
1186 X509_STORE_CTX xs_ctx;
1188 if (!X509_STORE_CTX_init(&xs_ctx,chain_store,x,NULL))
1190 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN,ERR_R_X509_LIB);
1193 X509_verify_cert(&xs_ctx);
1194 /* Don't leave errors in the queue */
1196 i = ssl_security_cert_chain(s, xs_ctx.chain, NULL, 0);
1199 X509_STORE_CTX_cleanup(&xs_ctx);
1200 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, i);
1203 for (i=0; i < sk_X509_num(xs_ctx.chain); i++)
1205 x = sk_X509_value(xs_ctx.chain, i);
1207 if (!ssl_add_cert_to_buf(buf, l, x))
1209 X509_STORE_CTX_cleanup(&xs_ctx);
1213 X509_STORE_CTX_cleanup(&xs_ctx);
1217 i = ssl_security_cert_chain(s, extra_certs, x, 0);
1220 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, i);
1223 if (!ssl_add_cert_to_buf(buf, l, x))
1225 for (i=0; i<sk_X509_num(extra_certs); i++)
1227 x=sk_X509_value(extra_certs,i);
1228 if (!ssl_add_cert_to_buf(buf, l, x))
1235 /* Build a certificate chain for current certificate */
1236 int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags)
1238 CERT *c = s ? s->cert : ctx->cert;
1239 CERT_PKEY *cpk = c->key;
1240 X509_STORE *chain_store = NULL;
1241 X509_STORE_CTX xs_ctx;
1242 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
1245 unsigned long error;
1249 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
1252 /* Rearranging and check the chain: add everything to a store */
1253 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
1255 chain_store = X509_STORE_new();
1258 for (i = 0; i < sk_X509_num(cpk->chain); i++)
1260 x = sk_X509_value(cpk->chain, i);
1261 if (!X509_STORE_add_cert(chain_store, x))
1263 error = ERR_peek_last_error();
1264 if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
1265 ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
1270 /* Add EE cert too: it might be self signed */
1271 if (!X509_STORE_add_cert(chain_store, cpk->x509))
1273 error = ERR_peek_last_error();
1274 if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
1275 ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
1283 chain_store = c->chain_store;
1285 chain_store = s->ctx->cert_store;
1287 chain_store = ctx->cert_store;
1289 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
1290 untrusted = cpk->chain;
1293 if (!X509_STORE_CTX_init(&xs_ctx, chain_store, cpk->x509, untrusted))
1295 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
1298 /* Set suite B flags if needed */
1299 X509_STORE_CTX_set_flags(&xs_ctx, c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
1301 i = X509_verify_cert(&xs_ctx);
1302 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR)
1304 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
1310 chain = X509_STORE_CTX_get1_chain(&xs_ctx);
1313 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
1314 i = X509_STORE_CTX_get_error(&xs_ctx);
1315 ERR_add_error_data(2, "Verify error:",
1316 X509_verify_cert_error_string(i));
1318 X509_STORE_CTX_cleanup(&xs_ctx);
1321 X509_STORE_CTX_cleanup(&xs_ctx);
1322 /* Remove EE certificate from chain */
1323 x = sk_X509_shift(chain);
1325 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT)
1327 if (sk_X509_num(chain) > 0)
1329 /* See if last cert is self signed */
1330 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
1331 X509_check_purpose(x, -1, 0);
1332 if (x->ex_flags & EXFLAG_SS)
1334 x = sk_X509_pop(chain);
1339 /* Check security level of all CA certificates: EE will have been
1342 for (i = 0; i < sk_X509_num(chain); i++)
1344 x = sk_X509_value(chain, i);
1345 rv = ssl_security_cert(s, ctx, x, 0, 0);
1348 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv);
1349 sk_X509_pop_free(chain, X509_free);
1355 sk_X509_pop_free(cpk->chain, X509_free);
1360 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
1361 X509_STORE_free(chain_store);
1366 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
1368 X509_STORE **pstore;
1370 pstore = &c->chain_store;
1372 pstore = &c->verify_store;
1374 X509_STORE_free(*pstore);
1377 CRYPTO_add(&store->references, 1, CRYPTO_LOCK_X509_STORE);
1381 static int ssl_security_default_callback(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex)
1384 static const int minbits_table[5] = {80, 112, 128, 192, 256};
1386 level = SSL_CTX_get_security_level(ctx);
1388 level = SSL_get_security_level(s);
1389 /* Level 0: anything goes */
1394 minbits = minbits_table[level - 1];
1397 case SSL_SECOP_CIPHER_SUPPORTED:
1398 case SSL_SECOP_CIPHER_SHARED:
1399 case SSL_SECOP_CIPHER_CHECK:
1401 const SSL_CIPHER *c = other;
1402 /* No ciphers below security level */
1405 /* No SSLv2 ciphers */
1406 if ((SSL_CIPHER_get_id(c) >> 24) == 0x2)
1408 /* No unauthenticated ciphersuites */
1409 if (c->algorithm_auth & SSL_aNULL)
1411 /* No MD5 mac ciphersuites */
1412 if (c->algorithm_mac & SSL_MD5)
1414 /* SHA1 HMAC is 160 bits of security */
1415 if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
1417 /* Level 2: no RC4 */
1418 if (level >= 2 && c->algorithm_enc == SSL_RC4)
1420 /* Level 3: forward secure ciphersuites only */
1421 if (level >= 3 && !(c->algorithm_mkey & (SSL_kEDH|SSL_kEECDH)))
1425 case SSL_SECOP_VERSION:
1426 /* SSLv2 allowed only on level zero */
1427 if (nid == SSL2_VERSION)
1429 /* SSLv3 not allowed on level 2 */
1430 if (nid <= SSL3_VERSION && level >= 2)
1432 /* TLS v1.1 and above only for level 3 */
1433 if (nid <= TLS1_VERSION && level >= 3)
1435 /* TLS v1.2 only for level 4 and above */
1436 if (nid <= TLS1_1_VERSION && level >= 4)
1440 case SSL_SECOP_COMPRESSION:
1444 case SSL_SECOP_TICKET:
1448 case SSL_SECOP_SSL2_COMPAT:
1449 /* SSLv2 compatible client hello only for level zero */
1458 int ssl_security(SSL *s, int op, int bits, int nid, void *other)
1460 return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex);
1463 int ssl_ctx_security(SSL_CTX *ctx, int op, int bits, int nid, void *other)
1465 return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other, ctx->cert->sec_ex);