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 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
137 static volatile int ssl_x509_store_ctx_idx= -1;
138 int got_write_lock = 0;
140 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
142 if (ssl_x509_store_ctx_idx < 0)
144 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
145 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
148 if (ssl_x509_store_ctx_idx < 0)
150 ssl_x509_store_ctx_idx=X509_STORE_CTX_get_ex_new_index(
151 0,"SSL for verify callback",NULL,NULL,NULL);
156 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
158 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
160 return ssl_x509_store_ctx_idx;
163 void ssl_cert_set_default_md(CERT *cert)
165 /* Set digest values to defaults */
166 #ifndef OPENSSL_NO_DSA
167 cert->pkeys[SSL_PKEY_DSA_SIGN].digest = EVP_sha1();
169 #ifndef OPENSSL_NO_RSA
170 cert->pkeys[SSL_PKEY_RSA_SIGN].digest = EVP_sha1();
171 cert->pkeys[SSL_PKEY_RSA_ENC].digest = EVP_sha1();
173 #ifndef OPENSSL_NO_ECDSA
174 cert->pkeys[SSL_PKEY_ECC].digest = EVP_sha1();
178 CERT *ssl_cert_new(void)
182 ret=(CERT *)OPENSSL_malloc(sizeof(CERT));
185 SSLerr(SSL_F_SSL_CERT_NEW,ERR_R_MALLOC_FAILURE);
188 memset(ret,0,sizeof(CERT));
190 ret->key= &(ret->pkeys[SSL_PKEY_RSA_ENC]);
192 ssl_cert_set_default_md(ret);
196 CERT *ssl_cert_dup(CERT *cert)
201 ret = (CERT *)OPENSSL_malloc(sizeof(CERT));
204 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
208 memset(ret, 0, sizeof(CERT));
210 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]];
211 /* or ret->key = ret->pkeys + (cert->key - cert->pkeys),
212 * if you find that more readable */
214 ret->valid = cert->valid;
215 ret->mask_k = cert->mask_k;
216 ret->mask_a = cert->mask_a;
217 ret->export_mask_k = cert->export_mask_k;
218 ret->export_mask_a = cert->export_mask_a;
220 #ifndef OPENSSL_NO_RSA
221 if (cert->rsa_tmp != NULL)
223 RSA_up_ref(cert->rsa_tmp);
224 ret->rsa_tmp = cert->rsa_tmp;
226 ret->rsa_tmp_cb = cert->rsa_tmp_cb;
229 #ifndef OPENSSL_NO_DH
230 if (cert->dh_tmp != NULL)
232 ret->dh_tmp = DHparams_dup(cert->dh_tmp);
233 if (ret->dh_tmp == NULL)
235 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB);
238 if (cert->dh_tmp->priv_key)
240 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key);
243 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
246 ret->dh_tmp->priv_key = b;
248 if (cert->dh_tmp->pub_key)
250 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key);
253 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
256 ret->dh_tmp->pub_key = b;
259 ret->dh_tmp_cb = cert->dh_tmp_cb;
262 #ifndef OPENSSL_NO_ECDH
265 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp);
266 if (ret->ecdh_tmp == NULL)
268 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB);
272 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb;
273 ret->ecdh_tmp_auto = cert->ecdh_tmp_auto;
276 for (i = 0; i < SSL_PKEY_NUM; i++)
278 CERT_PKEY *cpk = cert->pkeys + i;
279 CERT_PKEY *rpk = ret->pkeys + i;
280 if (cpk->x509 != NULL)
282 rpk->x509 = cpk->x509;
283 CRYPTO_add(&rpk->x509->references, 1, CRYPTO_LOCK_X509);
286 if (cpk->privatekey != NULL)
288 rpk->privatekey = cpk->privatekey;
289 CRYPTO_add(&cpk->privatekey->references, 1,
290 CRYPTO_LOCK_EVP_PKEY);
294 /* If there was anything special to do for
295 * certain types of keys, we'd do it here.
296 * (Nothing at the moment, I think.) */
298 case SSL_PKEY_RSA_ENC:
299 case SSL_PKEY_RSA_SIGN:
300 /* We have an RSA key. */
303 case SSL_PKEY_DSA_SIGN:
304 /* We have a DSA key. */
307 case SSL_PKEY_DH_RSA:
308 case SSL_PKEY_DH_DSA:
309 /* We have a DH key. */
313 /* We have an ECC key */
318 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG);
324 rpk->chain = X509_chain_up_ref(cpk->chain);
327 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
331 rpk->valid_flags = 0;
332 #ifndef OPENSSL_NO_TLSEXT
333 if (cert->pkeys[i].authz != NULL)
335 /* Just copy everything. */
336 ret->pkeys[i].authz_length =
337 cert->pkeys[i].authz_length;
338 ret->pkeys[i].authz =
339 OPENSSL_malloc(ret->pkeys[i].authz_length);
340 if (ret->pkeys[i].authz == NULL)
342 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
345 memcpy(ret->pkeys[i].authz,
346 cert->pkeys[i].authz,
347 cert->pkeys[i].authz_length);
350 if (cert->pkeys[i].serverinfo != NULL)
352 /* Just copy everything. */
353 ret->pkeys[i].serverinfo =
354 OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
355 if (ret->pkeys[i].serverinfo == NULL)
357 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
360 ret->pkeys[i].serverinfo_length =
361 cert->pkeys[i].serverinfo_length;
362 memcpy(ret->pkeys[i].serverinfo,
363 cert->pkeys[i].serverinfo,
364 cert->pkeys[i].serverinfo_length);
370 /* Set digests to defaults. NB: we don't copy existing values as they
371 * will be set during handshake.
373 ssl_cert_set_default_md(ret);
374 /* Peer sigalgs set to NULL as we get these from handshake too */
375 ret->peer_sigalgs = NULL;
376 ret->peer_sigalgslen = 0;
377 /* Configured sigalgs however we copy across */
379 if (cert->conf_sigalgs)
381 ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen);
382 if (!ret->conf_sigalgs)
384 memcpy(ret->conf_sigalgs, cert->conf_sigalgs,
385 cert->conf_sigalgslen);
386 ret->conf_sigalgslen = cert->conf_sigalgslen;
389 ret->conf_sigalgs = NULL;
391 if (cert->client_sigalgs)
393 ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen);
394 if (!ret->client_sigalgs)
396 memcpy(ret->client_sigalgs, cert->client_sigalgs,
397 cert->client_sigalgslen);
398 ret->client_sigalgslen = cert->client_sigalgslen;
401 ret->client_sigalgs = NULL;
402 /* Shared sigalgs also NULL */
403 ret->shared_sigalgs = NULL;
404 /* Copy any custom client certificate types */
407 ret->ctypes = OPENSSL_malloc(cert->ctype_num);
410 memcpy(ret->ctypes, cert->ctypes, cert->ctype_num);
411 ret->ctype_num = cert->ctype_num;
414 ret->cert_flags = cert->cert_flags;
416 ret->cert_cb = cert->cert_cb;
417 ret->cert_cb_arg = cert->cert_cb_arg;
419 if (cert->verify_store)
421 CRYPTO_add(&cert->verify_store->references, 1, CRYPTO_LOCK_X509_STORE);
422 ret->verify_store = cert->verify_store;
425 if (cert->chain_store)
427 CRYPTO_add(&cert->chain_store->references, 1, CRYPTO_LOCK_X509_STORE);
428 ret->chain_store = cert->chain_store;
431 ret->ciphers_raw = NULL;
435 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH)
438 #ifndef OPENSSL_NO_RSA
439 if (ret->rsa_tmp != NULL)
440 RSA_free(ret->rsa_tmp);
442 #ifndef OPENSSL_NO_DH
443 if (ret->dh_tmp != NULL)
444 DH_free(ret->dh_tmp);
446 #ifndef OPENSSL_NO_ECDH
447 if (ret->ecdh_tmp != NULL)
448 EC_KEY_free(ret->ecdh_tmp);
451 ssl_cert_clear_certs(ret);
456 /* Free up and clear all certificates and chains */
458 void ssl_cert_clear_certs(CERT *c)
463 for (i = 0; i<SSL_PKEY_NUM; i++)
465 CERT_PKEY *cpk = c->pkeys + i;
468 X509_free(cpk->x509);
473 EVP_PKEY_free(cpk->privatekey);
474 cpk->privatekey = NULL;
478 sk_X509_pop_free(cpk->chain, X509_free);
481 #ifndef OPENSSL_NO_TLSEXT
484 OPENSSL_free(cpk->authz);
489 OPENSSL_free(cpk->serverinfo);
490 cpk->serverinfo = NULL;
491 cpk->serverinfo_length = 0;
494 /* Clear all flags apart from explicit sign */
495 cpk->valid_flags &= CERT_PKEY_EXPLICIT_SIGN;
499 void ssl_cert_free(CERT *c)
506 i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT);
514 fprintf(stderr,"ssl_cert_free, bad reference count\n");
519 #ifndef OPENSSL_NO_RSA
520 if (c->rsa_tmp) RSA_free(c->rsa_tmp);
522 #ifndef OPENSSL_NO_DH
523 if (c->dh_tmp) DH_free(c->dh_tmp);
525 #ifndef OPENSSL_NO_ECDH
526 if (c->ecdh_tmp) EC_KEY_free(c->ecdh_tmp);
529 ssl_cert_clear_certs(c);
531 OPENSSL_free(c->peer_sigalgs);
533 OPENSSL_free(c->conf_sigalgs);
534 if (c->client_sigalgs)
535 OPENSSL_free(c->client_sigalgs);
536 if (c->shared_sigalgs)
537 OPENSSL_free(c->shared_sigalgs);
539 OPENSSL_free(c->ctypes);
541 X509_STORE_free(c->verify_store);
543 X509_STORE_free(c->chain_store);
545 OPENSSL_free(c->ciphers_raw);
549 int ssl_cert_inst(CERT **o)
551 /* Create a CERT if there isn't already one
552 * (which cannot really happen, as it is initially created in
553 * SSL_CTX_new; but the earlier code usually allows for that one
554 * being non-existant, so we follow that behaviour, as it might
555 * turn out that there actually is a reason for it -- but I'm
556 * not sure that *all* of the existing code could cope with
557 * s->cert being NULL, otherwise we could do without the
558 * initialization in SSL_CTX_new).
563 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER);
568 if ((*o = ssl_cert_new()) == NULL)
570 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE);
577 int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain)
579 CERT_PKEY *cpk = c->key;
583 sk_X509_pop_free(cpk->chain, X509_free);
588 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain)
590 STACK_OF(X509) *dchain;
592 return ssl_cert_set0_chain(c, NULL);
593 dchain = X509_chain_up_ref(chain);
596 if (!ssl_cert_set0_chain(c, dchain))
598 sk_X509_pop_free(dchain, X509_free);
604 int ssl_cert_add0_chain_cert(CERT *c, X509 *x)
606 CERT_PKEY *cpk = c->key;
610 cpk->chain = sk_X509_new_null();
611 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
616 int ssl_cert_add1_chain_cert(CERT *c, X509 *x)
618 if (!ssl_cert_add0_chain_cert(c, x))
620 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
624 int ssl_cert_select_current(CERT *c, X509 *x)
627 for (i = 0; i < SSL_PKEY_NUM; i++)
629 if (c->pkeys[i].x509 == x)
631 c->key = &c->pkeys[i];
638 void ssl_cert_set_cert_cb(CERT *c, int (*cb)(SSL *ssl, void *arg), void *arg)
641 c->cert_cb_arg = arg;
644 SESS_CERT *ssl_sess_cert_new(void)
648 ret = OPENSSL_malloc(sizeof *ret);
651 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE);
655 memset(ret, 0 ,sizeof *ret);
656 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]);
662 void ssl_sess_cert_free(SESS_CERT *sc)
669 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT);
671 REF_PRINT("SESS_CERT", sc);
678 fprintf(stderr,"ssl_sess_cert_free, bad reference count\n");
684 if (sc->cert_chain != NULL)
685 sk_X509_pop_free(sc->cert_chain, X509_free);
686 for (i = 0; i < SSL_PKEY_NUM; i++)
688 if (sc->peer_pkeys[i].x509 != NULL)
689 X509_free(sc->peer_pkeys[i].x509);
690 #if 0 /* We don't have the peer's private key. These lines are just
691 * here as a reminder that we're still using a not-quite-appropriate
693 if (sc->peer_pkeys[i].privatekey != NULL)
694 EVP_PKEY_free(sc->peer_pkeys[i].privatekey);
698 #ifndef OPENSSL_NO_RSA
699 if (sc->peer_rsa_tmp != NULL)
700 RSA_free(sc->peer_rsa_tmp);
702 #ifndef OPENSSL_NO_DH
703 if (sc->peer_dh_tmp != NULL)
704 DH_free(sc->peer_dh_tmp);
706 #ifndef OPENSSL_NO_ECDH
707 if (sc->peer_ecdh_tmp != NULL)
708 EC_KEY_free(sc->peer_ecdh_tmp);
714 int ssl_set_peer_cert_type(SESS_CERT *sc,int type)
716 sc->peer_cert_type = type;
720 #ifndef OPENSSL_NO_DANE
723 * -1: format or digest error
727 int tlsa_cmp(const X509 *cert, const unsigned char *tlsa_record, unsigned int reclen)
730 unsigned char digest[EVP_MAX_MD_SIZE];
731 unsigned int len, selector, matching_type;
734 if (reclen<3) return -1;
736 selector = tlsa_record[1];
737 matching_type = tlsa_record[2];
741 switch (matching_type) {
742 case 0: /* exact match */
743 if (selector==0) { /* full certificate */
744 ret = EVP_Digest(tlsa_record,reclen,digest,&len,EVP_sha1(),NULL);
745 return ret ? memcmp(cert->sha1_hash,digest,len)!=0 : -1;
747 else if (selector==1) { /* SubjectPublicKeyInfo */
748 ASN1_BIT_STRING *key = X509_get0_pubkey_bitstr(cert);
750 if (key == NULL) return -1;
751 if (key->length != reclen) return 1;
753 return memcmp(key->data,tlsa_record,reclen)!=0;
759 md = matching_type==1 ? EVP_sha256() : EVP_sha512();
761 if (reclen!=EVP_MD_size(md)) return -1;
763 if (selector==0) { /* full certificate */
764 ret = X509_digest(cert,md,digest,&len);
766 else if (selector==1) { /* SubjectPublicKeyInfo */
767 ret = X509_pubkey_digest(cert,md,digest,&len);
772 return ret ? memcmp(tlsa_record,digest,len)!=0 : -1;
778 int dane_verify_callback(int ok, X509_STORE_CTX *ctx)
780 SSL *s = X509_STORE_CTX_get_ex_data(ctx,SSL_get_ex_data_X509_STORE_CTX_idx());
781 int depth=X509_STORE_CTX_get_error_depth(ctx);
782 X509 *cert = sk_X509_value(ctx->chain,depth);
783 unsigned int reclen, certificate_usage, witness_usage=0x100;
784 const unsigned char *tlsa_record = s->tlsa_record;
787 if (s->verify_callback) ok = s->verify_callback(ok,ctx);
789 if (tlsa_record == NULL) return ok;
791 if (tlsa_record == (void*)-1) {
792 ctx->error = X509_V_ERR_INVALID_CA; /* temporary code? */
796 while ((reclen = *(unsigned int *)tlsa_record)) {
797 tlsa_record += sizeof(unsigned int);
800 * tlsa_record[0] Certificate Usage field
801 * tlsa_record[1] Selector field
802 * tlsa_record[2] Matching Type Field
803 * tlsa_record+3 Certificate Association data
805 certificate_usage = tlsa_record[0];
807 if (depth==0 || certificate_usage==0 || certificate_usage==2) {
808 tlsa_ret = tlsa_cmp(cert,tlsa_record,reclen);
810 s->tlsa_witness = depth<<8|certificate_usage;
813 else if (tlsa_ret==-1)
814 s->tlsa_witness = -1; /* something phishy? */
817 tlsa_record += reclen;
821 switch (s->tlsa_witness&0xff) { /* witnessed usage */
822 case 0: /* CA constraint */
823 if (s->tlsa_witness<0 && ctx->error==X509_V_OK)
824 ctx->error = X509_V_ERR_INVALID_CA;
826 case 1: /* service certificate constraint */
827 if (tlsa_ret!=0 && ctx->error==X509_V_OK)
828 ctx->error = X509_V_ERR_CERT_UNTRUSTED;
830 case 2: /* trust anchor assertion */
831 if ((s->tlsa_witness>>8)>0 && ctx->error==X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY)
832 ctx->error = X509_V_OK;
834 case 3: /* domain-issued certificate */
836 ctx->error = X509_V_OK; /* override all errors? */
838 default:/* there were TLSA records, but something phishy happened */
839 ctx->error = X509_V_ERR_CERT_UNTRUSTED;
845 * returning 1 makes verify procedure traverse the whole chain,
846 * not actually approve it...
852 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk)
856 X509_STORE *verify_store;
859 if (s->cert->verify_store)
860 verify_store = s->cert->verify_store;
862 verify_store = s->ctx->cert_store;
864 if ((sk == NULL) || (sk_X509_num(sk) == 0))
867 x=sk_X509_value(sk,0);
868 if(!X509_STORE_CTX_init(&ctx,verify_store,x,sk))
870 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,ERR_R_X509_LIB);
873 /* Set suite B flags if needed */
874 X509_STORE_CTX_set_flags(&ctx, tls1_suiteb(s));
876 if (SSL_get_verify_depth(s) >= 0)
877 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s));
879 X509_STORE_CTX_set_ex_data(&ctx,SSL_get_ex_data_X509_STORE_CTX_idx(),s);
881 /* We need to inherit the verify parameters. These can be determined by
882 * the context: if its a server it will verify SSL client certificates
886 X509_STORE_CTX_set_default(&ctx,
887 s->server ? "ssl_client" : "ssl_server");
888 /* Anything non-default in "param" should overwrite anything in the
891 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param);
893 #ifndef OPENSSL_NO_DANE
894 X509_STORE_CTX_set_verify_cb(&ctx, dane_verify_callback);
895 s->tlsa_witness = -1;
897 if (s->verify_callback)
898 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback);
901 if (s->ctx->app_verify_callback != NULL)
902 #if 1 /* new with OpenSSL 0.9.7 */
903 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg);
905 i=s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */
909 #ifndef OPENSSL_NO_X509_VERIFY
910 i=X509_verify_cert(&ctx);
913 ctx.error=X509_V_ERR_APPLICATION_VERIFICATION;
914 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_NO_VERIFY_CALLBACK);
918 s->verify_result=ctx.error;
919 X509_STORE_CTX_cleanup(&ctx);
924 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,STACK_OF(X509_NAME) *name_list)
926 if (*ca_list != NULL)
927 sk_X509_NAME_pop_free(*ca_list,X509_NAME_free);
932 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk)
935 STACK_OF(X509_NAME) *ret;
938 ret=sk_X509_NAME_new_null();
939 for (i=0; i<sk_X509_NAME_num(sk); i++)
941 name=X509_NAME_dup(sk_X509_NAME_value(sk,i));
942 if ((name == NULL) || !sk_X509_NAME_push(ret,name))
944 sk_X509_NAME_pop_free(ret,X509_NAME_free);
951 void SSL_set_client_CA_list(SSL *s,STACK_OF(X509_NAME) *name_list)
953 set_client_CA_list(&(s->client_CA),name_list);
956 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,STACK_OF(X509_NAME) *name_list)
958 set_client_CA_list(&(ctx->client_CA),name_list);
961 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
963 return(ctx->client_CA);
966 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
968 if (s->type == SSL_ST_CONNECT)
969 { /* we are in the client */
970 if (((s->version>>8) == SSL3_VERSION_MAJOR) &&
972 return(s->s3->tmp.ca_names);
978 if (s->client_CA != NULL)
979 return(s->client_CA);
981 return(s->ctx->client_CA);
985 static int add_client_CA(STACK_OF(X509_NAME) **sk,X509 *x)
989 if (x == NULL) return(0);
990 if ((*sk == NULL) && ((*sk=sk_X509_NAME_new_null()) == NULL))
993 if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL)
996 if (!sk_X509_NAME_push(*sk,name))
998 X509_NAME_free(name);
1004 int SSL_add_client_CA(SSL *ssl,X509 *x)
1006 return(add_client_CA(&(ssl->client_CA),x));
1009 int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x)
1011 return(add_client_CA(&(ctx->client_CA),x));
1014 static int xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1016 return(X509_NAME_cmp(*a,*b));
1019 #ifndef OPENSSL_NO_STDIO
1021 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
1022 * it doesn't really have anything to do with clients (except that a common use
1023 * for a stack of CAs is to send it to the client). Actually, it doesn't have
1024 * much to do with CAs, either, since it will load any old cert.
1025 * \param file the file containing one or more certs.
1026 * \return a ::STACK containing the certs.
1028 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
1033 STACK_OF(X509_NAME) *ret = NULL,*sk;
1035 sk=sk_X509_NAME_new(xname_cmp);
1037 in=BIO_new(BIO_s_file_internal());
1039 if ((sk == NULL) || (in == NULL))
1041 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE);
1045 if (!BIO_read_filename(in,file))
1050 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL)
1054 ret = sk_X509_NAME_new_null();
1057 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE);
1061 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
1062 /* check for duplicates */
1063 xn=X509_NAME_dup(xn);
1064 if (xn == NULL) goto err;
1065 if (sk_X509_NAME_find(sk,xn) >= 0)
1069 sk_X509_NAME_push(sk,xn);
1070 sk_X509_NAME_push(ret,xn);
1077 if (ret != NULL) sk_X509_NAME_pop_free(ret,X509_NAME_free);
1080 if (sk != NULL) sk_X509_NAME_free(sk);
1081 if (in != NULL) BIO_free(in);
1082 if (x != NULL) X509_free(x);
1090 * Add a file of certs to a stack.
1091 * \param stack the stack to add to.
1092 * \param file the file to add from. All certs in this file that are not
1093 * already in the stack will be added.
1094 * \return 1 for success, 0 for failure. Note that in the case of failure some
1095 * certs may have been added to \c stack.
1098 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
1105 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b);
1107 oldcmp=sk_X509_NAME_set_cmp_func(stack,xname_cmp);
1109 in=BIO_new(BIO_s_file_internal());
1113 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE);
1117 if (!BIO_read_filename(in,file))
1122 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL)
1124 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
1125 xn=X509_NAME_dup(xn);
1126 if (xn == NULL) goto err;
1127 if (sk_X509_NAME_find(stack,xn) >= 0)
1130 sk_X509_NAME_push(stack,xn);
1145 (void)sk_X509_NAME_set_cmp_func(stack,oldcmp);
1151 * Add a directory of certs to a stack.
1152 * \param stack the stack to append to.
1153 * \param dir the directory to append from. All files in this directory will be
1154 * examined as potential certs. Any that are acceptable to
1155 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
1157 * \return 1 for success, 0 for failure. Note that in the case of failure some
1158 * certs may have been added to \c stack.
1161 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
1164 OPENSSL_DIR_CTX *d = NULL;
1165 const char *filename;
1168 CRYPTO_w_lock(CRYPTO_LOCK_READDIR);
1170 /* Note that a side effect is that the CAs will be sorted by name */
1172 while((filename = OPENSSL_DIR_read(&d, dir)))
1177 if(strlen(dir)+strlen(filename)+2 > sizeof buf)
1179 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,SSL_R_PATH_TOO_LONG);
1183 #ifdef OPENSSL_SYS_VMS
1184 r = BIO_snprintf(buf,sizeof buf,"%s%s",dir,filename);
1186 r = BIO_snprintf(buf,sizeof buf,"%s/%s",dir,filename);
1188 if (r <= 0 || r >= (int)sizeof(buf))
1190 if(!SSL_add_file_cert_subjects_to_stack(stack,buf))
1196 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
1197 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
1198 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
1205 if (d) OPENSSL_DIR_end(&d);
1206 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR);
1210 /* Add a certificate to a BUF_MEM structure */
1212 static int ssl_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x)
1218 if (!BUF_MEM_grow_clean(buf,(int)(n+(*l)+3)))
1220 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF,ERR_R_BUF_LIB);
1223 p=(unsigned char *)&(buf->data[*l]);
1231 /* Add certificate chain to internal SSL BUF_MEM strcuture */
1232 int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l)
1234 BUF_MEM *buf = s->init_buf;
1239 STACK_OF(X509) *extra_certs;
1240 X509_STORE *chain_store;
1247 if (s->cert->chain_store)
1248 chain_store = s->cert->chain_store;
1250 chain_store = s->ctx->cert_store;
1252 /* If we have a certificate specific chain use it, else use
1255 if (cpk && cpk->chain)
1256 extra_certs = cpk->chain;
1258 extra_certs = s->ctx->extra_certs;
1260 if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || extra_certs)
1265 /* TLSv1 sends a chain with nothing in it, instead of an alert */
1266 if (!BUF_MEM_grow_clean(buf,10))
1268 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN,ERR_R_BUF_LIB);
1275 if (!ssl_add_cert_to_buf(buf, l, x))
1280 X509_STORE_CTX xs_ctx;
1282 if (!X509_STORE_CTX_init(&xs_ctx,chain_store,x,NULL))
1284 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN,ERR_R_X509_LIB);
1287 X509_verify_cert(&xs_ctx);
1288 /* Don't leave errors in the queue */
1290 for (i=0; i < sk_X509_num(xs_ctx.chain); i++)
1292 x = sk_X509_value(xs_ctx.chain, i);
1294 if (!ssl_add_cert_to_buf(buf, l, x))
1296 X509_STORE_CTX_cleanup(&xs_ctx);
1300 X509_STORE_CTX_cleanup(&xs_ctx);
1303 for (i=0; i<sk_X509_num(extra_certs); i++)
1305 x=sk_X509_value(extra_certs,i);
1306 if (!ssl_add_cert_to_buf(buf, l, x))
1313 /* Build a certificate chain for current certificate */
1314 int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags)
1316 CERT_PKEY *cpk = c->key;
1317 X509_STORE_CTX xs_ctx;
1318 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
1324 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
1329 chain_store = c->chain_store;
1331 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
1332 untrusted = cpk->chain;
1334 if (!X509_STORE_CTX_init(&xs_ctx, chain_store, cpk->x509, untrusted))
1336 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
1339 /* Set suite B flags if needed */
1340 X509_STORE_CTX_set_flags(&xs_ctx, c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
1342 i = X509_verify_cert(&xs_ctx);
1344 chain = X509_STORE_CTX_get1_chain(&xs_ctx);
1345 X509_STORE_CTX_cleanup(&xs_ctx);
1348 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
1352 sk_X509_pop_free(cpk->chain, X509_free);
1353 /* Remove EE certificate from chain */
1354 x = sk_X509_shift(chain);
1356 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT)
1358 x = sk_X509_pop(chain);
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);