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 if (((size_t)&ssl_x509_store_ctx_idx&(sizeof(ssl_x509_store_ctx_idx)-1))
141 ==0) /* check alignment, practically always true */
145 if ((ret=ssl_x509_store_ctx_idx) < 0)
147 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
148 if ((ret=ssl_x509_store_ctx_idx) < 0)
150 ret=ssl_x509_store_ctx_idx=X509_STORE_CTX_get_ex_new_index(
151 0,"SSL for verify callback",NULL,NULL,NULL);
153 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
158 else /* commonly eliminated */
160 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
162 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)
170 ssl_x509_store_ctx_idx=X509_STORE_CTX_get_ex_new_index(
171 0,"SSL for verify callback",NULL,NULL,NULL);
176 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
178 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
180 return ssl_x509_store_ctx_idx;
184 void ssl_cert_set_default_md(CERT *cert)
186 /* Set digest values to defaults */
187 #ifndef OPENSSL_NO_DSA
188 cert->pkeys[SSL_PKEY_DSA_SIGN].digest = EVP_sha1();
190 #ifndef OPENSSL_NO_RSA
191 cert->pkeys[SSL_PKEY_RSA_SIGN].digest = EVP_sha1();
192 cert->pkeys[SSL_PKEY_RSA_ENC].digest = EVP_sha1();
194 #ifndef OPENSSL_NO_ECDSA
195 cert->pkeys[SSL_PKEY_ECC].digest = EVP_sha1();
199 CERT *ssl_cert_new(void)
203 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));
225 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
229 memset(ret, 0, sizeof(CERT));
231 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]];
232 /* or ret->key = ret->pkeys + (cert->key - cert->pkeys),
233 * if you find that more readable */
235 ret->valid = cert->valid;
236 ret->mask_k = cert->mask_k;
237 ret->mask_a = cert->mask_a;
238 ret->export_mask_k = cert->export_mask_k;
239 ret->export_mask_a = cert->export_mask_a;
241 #ifndef OPENSSL_NO_RSA
242 if (cert->rsa_tmp != NULL)
244 RSA_up_ref(cert->rsa_tmp);
245 ret->rsa_tmp = cert->rsa_tmp;
247 ret->rsa_tmp_cb = cert->rsa_tmp_cb;
250 #ifndef OPENSSL_NO_DH
251 if (cert->dh_tmp != NULL)
253 ret->dh_tmp = DHparams_dup(cert->dh_tmp);
254 if (ret->dh_tmp == NULL)
256 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB);
259 if (cert->dh_tmp->priv_key)
261 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key);
264 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
267 ret->dh_tmp->priv_key = b;
269 if (cert->dh_tmp->pub_key)
271 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key);
274 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
277 ret->dh_tmp->pub_key = b;
280 ret->dh_tmp_cb = cert->dh_tmp_cb;
283 #ifndef OPENSSL_NO_ECDH
286 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp);
287 if (ret->ecdh_tmp == NULL)
289 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB);
293 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb;
294 ret->ecdh_tmp_auto = cert->ecdh_tmp_auto;
297 for (i = 0; i < SSL_PKEY_NUM; i++)
299 CERT_PKEY *cpk = cert->pkeys + i;
300 CERT_PKEY *rpk = ret->pkeys + i;
301 if (cpk->x509 != NULL)
303 rpk->x509 = cpk->x509;
304 CRYPTO_add(&rpk->x509->references, 1, CRYPTO_LOCK_X509);
307 if (cpk->privatekey != NULL)
309 rpk->privatekey = cpk->privatekey;
310 CRYPTO_add(&cpk->privatekey->references, 1,
311 CRYPTO_LOCK_EVP_PKEY);
315 /* If there was anything special to do for
316 * certain types of keys, we'd do it here.
317 * (Nothing at the moment, I think.) */
319 case SSL_PKEY_RSA_ENC:
320 case SSL_PKEY_RSA_SIGN:
321 /* We have an RSA key. */
324 case SSL_PKEY_DSA_SIGN:
325 /* We have a DSA key. */
328 case SSL_PKEY_DH_RSA:
329 case SSL_PKEY_DH_DSA:
330 /* We have a DH key. */
334 /* We have an ECC key */
339 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG);
345 rpk->chain = X509_chain_up_ref(cpk->chain);
348 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
352 rpk->valid_flags = 0;
353 #ifndef OPENSSL_NO_TLSEXT
354 if (cert->pkeys[i].serverinfo != NULL)
356 /* Just copy everything. */
357 ret->pkeys[i].serverinfo =
358 OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
359 if (ret->pkeys[i].serverinfo == NULL)
361 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
364 ret->pkeys[i].serverinfo_length =
365 cert->pkeys[i].serverinfo_length;
366 memcpy(ret->pkeys[i].serverinfo,
367 cert->pkeys[i].serverinfo,
368 cert->pkeys[i].serverinfo_length);
374 /* Set digests to defaults. NB: we don't copy existing values as they
375 * will be set during handshake.
377 ssl_cert_set_default_md(ret);
378 /* Peer sigalgs set to NULL as we get these from handshake too */
379 ret->peer_sigalgs = NULL;
380 ret->peer_sigalgslen = 0;
381 /* Configured sigalgs however we copy across */
383 if (cert->conf_sigalgs)
385 ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen);
386 if (!ret->conf_sigalgs)
388 memcpy(ret->conf_sigalgs, cert->conf_sigalgs,
389 cert->conf_sigalgslen);
390 ret->conf_sigalgslen = cert->conf_sigalgslen;
393 ret->conf_sigalgs = NULL;
395 if (cert->client_sigalgs)
397 ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen);
398 if (!ret->client_sigalgs)
400 memcpy(ret->client_sigalgs, cert->client_sigalgs,
401 cert->client_sigalgslen);
402 ret->client_sigalgslen = cert->client_sigalgslen;
405 ret->client_sigalgs = NULL;
406 /* Shared sigalgs also NULL */
407 ret->shared_sigalgs = NULL;
408 /* Copy any custom client certificate types */
411 ret->ctypes = OPENSSL_malloc(cert->ctype_num);
414 memcpy(ret->ctypes, cert->ctypes, cert->ctype_num);
415 ret->ctype_num = cert->ctype_num;
418 ret->cert_flags = cert->cert_flags;
420 ret->cert_cb = cert->cert_cb;
421 ret->cert_cb_arg = cert->cert_cb_arg;
423 if (cert->verify_store)
425 CRYPTO_add(&cert->verify_store->references, 1, CRYPTO_LOCK_X509_STORE);
426 ret->verify_store = cert->verify_store;
429 if (cert->chain_store)
431 CRYPTO_add(&cert->chain_store->references, 1, CRYPTO_LOCK_X509_STORE);
432 ret->chain_store = cert->chain_store;
435 ret->ciphers_raw = NULL;
439 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH)
442 #ifndef OPENSSL_NO_RSA
443 if (ret->rsa_tmp != NULL)
444 RSA_free(ret->rsa_tmp);
446 #ifndef OPENSSL_NO_DH
447 if (ret->dh_tmp != NULL)
448 DH_free(ret->dh_tmp);
450 #ifndef OPENSSL_NO_ECDH
451 if (ret->ecdh_tmp != NULL)
452 EC_KEY_free(ret->ecdh_tmp);
455 ssl_cert_clear_certs(ret);
460 /* Free up and clear all certificates and chains */
462 void ssl_cert_clear_certs(CERT *c)
467 for (i = 0; i<SSL_PKEY_NUM; i++)
469 CERT_PKEY *cpk = c->pkeys + i;
472 X509_free(cpk->x509);
477 EVP_PKEY_free(cpk->privatekey);
478 cpk->privatekey = NULL;
482 sk_X509_pop_free(cpk->chain, X509_free);
485 #ifndef OPENSSL_NO_TLSEXT
488 OPENSSL_free(cpk->serverinfo);
489 cpk->serverinfo = NULL;
490 cpk->serverinfo_length = 0;
493 /* Clear all flags apart from explicit sign */
494 cpk->valid_flags &= CERT_PKEY_EXPLICIT_SIGN;
498 void ssl_cert_free(CERT *c)
505 i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT);
513 fprintf(stderr,"ssl_cert_free, bad reference count\n");
518 #ifndef OPENSSL_NO_RSA
519 if (c->rsa_tmp) RSA_free(c->rsa_tmp);
521 #ifndef OPENSSL_NO_DH
522 if (c->dh_tmp) DH_free(c->dh_tmp);
524 #ifndef OPENSSL_NO_ECDH
525 if (c->ecdh_tmp) EC_KEY_free(c->ecdh_tmp);
528 ssl_cert_clear_certs(c);
530 OPENSSL_free(c->peer_sigalgs);
532 OPENSSL_free(c->conf_sigalgs);
533 if (c->client_sigalgs)
534 OPENSSL_free(c->client_sigalgs);
535 if (c->shared_sigalgs)
536 OPENSSL_free(c->shared_sigalgs);
538 OPENSSL_free(c->ctypes);
540 X509_STORE_free(c->verify_store);
542 X509_STORE_free(c->chain_store);
544 OPENSSL_free(c->ciphers_raw);
548 int ssl_cert_inst(CERT **o)
550 /* Create a CERT if there isn't already one
551 * (which cannot really happen, as it is initially created in
552 * SSL_CTX_new; but the earlier code usually allows for that one
553 * being non-existant, so we follow that behaviour, as it might
554 * turn out that there actually is a reason for it -- but I'm
555 * not sure that *all* of the existing code could cope with
556 * s->cert being NULL, otherwise we could do without the
557 * initialization in SSL_CTX_new).
562 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER);
567 if ((*o = ssl_cert_new()) == NULL)
569 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE);
576 int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain)
578 CERT_PKEY *cpk = c->key;
582 sk_X509_pop_free(cpk->chain, X509_free);
587 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain)
589 STACK_OF(X509) *dchain;
591 return ssl_cert_set0_chain(c, NULL);
592 dchain = X509_chain_up_ref(chain);
595 if (!ssl_cert_set0_chain(c, dchain))
597 sk_X509_pop_free(dchain, X509_free);
603 int ssl_cert_add0_chain_cert(CERT *c, X509 *x)
605 CERT_PKEY *cpk = c->key;
609 cpk->chain = sk_X509_new_null();
610 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
615 int ssl_cert_add1_chain_cert(CERT *c, X509 *x)
617 if (!ssl_cert_add0_chain_cert(c, x))
619 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
623 int ssl_cert_select_current(CERT *c, X509 *x)
628 for (i = 0; i < SSL_PKEY_NUM; i++)
630 CERT_PKEY *cpk = c->pkeys + i;
631 if (cpk->x509 == x && cpk->privatekey)
638 for (i = 0; i < SSL_PKEY_NUM; i++)
640 CERT_PKEY *cpk = c->pkeys + i;
641 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x))
650 int ssl_cert_set_current(CERT *c, long op)
655 if (op == SSL_CERT_SET_FIRST)
657 else if (op == SSL_CERT_SET_NEXT)
659 idx = (int)(c->key - c->pkeys + 1);
660 if (idx >= SSL_PKEY_NUM)
665 for (i = idx; i < SSL_PKEY_NUM; i++)
667 CERT_PKEY *cpk = c->key + i;
668 if (cpk->x509 && cpk->privatekey)
677 void ssl_cert_set_cert_cb(CERT *c, int (*cb)(SSL *ssl, void *arg), void *arg)
680 c->cert_cb_arg = arg;
683 SESS_CERT *ssl_sess_cert_new(void)
687 ret = OPENSSL_malloc(sizeof *ret);
690 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE);
694 memset(ret, 0 ,sizeof *ret);
695 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]);
701 void ssl_sess_cert_free(SESS_CERT *sc)
708 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT);
710 REF_PRINT("SESS_CERT", sc);
717 fprintf(stderr,"ssl_sess_cert_free, bad reference count\n");
723 if (sc->cert_chain != NULL)
724 sk_X509_pop_free(sc->cert_chain, X509_free);
725 for (i = 0; i < SSL_PKEY_NUM; i++)
727 if (sc->peer_pkeys[i].x509 != NULL)
728 X509_free(sc->peer_pkeys[i].x509);
729 #if 0 /* We don't have the peer's private key. These lines are just
730 * here as a reminder that we're still using a not-quite-appropriate
732 if (sc->peer_pkeys[i].privatekey != NULL)
733 EVP_PKEY_free(sc->peer_pkeys[i].privatekey);
737 #ifndef OPENSSL_NO_RSA
738 if (sc->peer_rsa_tmp != NULL)
739 RSA_free(sc->peer_rsa_tmp);
741 #ifndef OPENSSL_NO_DH
742 if (sc->peer_dh_tmp != NULL)
743 DH_free(sc->peer_dh_tmp);
745 #ifndef OPENSSL_NO_ECDH
746 if (sc->peer_ecdh_tmp != NULL)
747 EC_KEY_free(sc->peer_ecdh_tmp);
753 int ssl_set_peer_cert_type(SESS_CERT *sc,int type)
755 sc->peer_cert_type = type;
759 #ifndef OPENSSL_NO_DANE
760 static void tlsa_free(void *parent,void *ptr,CRYPTO_EX_DATA *ad,int idx,long argl,void *argp)
762 TLSA_EX_DATA *ex = ptr;
766 if (ex->tlsa_record!=NULL && ex->tlsa_record!=(void *)-1)
767 OPENSSL_free(ex->tlsa_record);
773 int SSL_get_TLSA_ex_data_idx(void)
775 static volatile int ssl_tlsa_idx= -1;
776 int got_write_lock = 0;
778 if (((size_t)&ssl_tlsa_idx&(sizeof(ssl_tlsa_idx)-1))
779 ==0) /* check alignment, practically always true */
783 if ((ret=ssl_tlsa_idx) < 0)
785 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
786 if ((ret=ssl_tlsa_idx) < 0)
788 ret=ssl_tlsa_idx=SSL_get_ex_new_index(
789 0,"per-SSL TLSA",NULL,NULL,tlsa_free);
791 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
796 else /* commonly eliminated */
798 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
800 if (ssl_tlsa_idx < 0)
802 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
803 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
806 if (ssl_tlsa_idx < 0)
808 ssl_tlsa_idx=SSL_get_ex_new_index(
809 0,"pre-SSL TLSA",NULL,NULL,tlsa_free);
814 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
816 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
822 TLSA_EX_DATA *SSL_get_TLSA_ex_data(SSL *ssl)
824 int idx = SSL_get_TLSA_ex_data_idx();
827 if ((ex=SSL_get_ex_data(ssl,idx)) == NULL)
829 ex = OPENSSL_malloc(sizeof(TLSA_EX_DATA));
830 ex->tlsa_record = NULL;
831 ex->tlsa_witness = -1;
832 SSL_set_ex_data(ssl,idx,ex);
840 * -1: format or digest error
844 static int tlsa_cmp(const X509 *cert, const unsigned char *tlsa_record, unsigned int reclen)
847 unsigned char digest[EVP_MAX_MD_SIZE];
848 unsigned int len, selector, matching_type;
851 if (reclen<3 || tlsa_record[0]>3) return -1;
853 selector = tlsa_record[1];
854 matching_type = tlsa_record[2];
858 switch (matching_type) {
859 case 0: /* exact match */
860 if (selector==0) { /* full certificate */
861 ret = EVP_Digest(tlsa_record,reclen,digest,&len,EVP_sha1(),NULL);
862 return ret ? memcmp(cert->sha1_hash,digest,len)!=0 : -1;
864 else if (selector==1) { /* SubjectPublicKeyInfo */
865 ASN1_BIT_STRING *key = X509_get0_pubkey_bitstr(cert);
867 if (key == NULL) return -1;
868 if (key->length != reclen) return 1;
870 return memcmp(key->data,tlsa_record,reclen)!=0;
876 md = matching_type==1 ? EVP_sha256() : EVP_sha512();
878 if (reclen!=EVP_MD_size(md)) return -1;
880 if (selector==0) { /* full certificate */
881 ret = X509_digest(cert,md,digest,&len);
883 else if (selector==1) { /* SubjectPublicKeyInfo */
884 ret = X509_pubkey_digest(cert,md,digest,&len);
889 return ret ? memcmp(tlsa_record,digest,len)!=0 : -1;
895 static int dane_verify_callback(int ok, X509_STORE_CTX *ctx)
897 SSL *s = X509_STORE_CTX_get_ex_data(ctx,SSL_get_ex_data_X509_STORE_CTX_idx());
898 int depth=X509_STORE_CTX_get_error_depth(ctx);
899 X509 *cert = sk_X509_value(ctx->chain,depth);
901 const unsigned char *tlsa_record;
902 int tlsa_ret=-1, mask=1;
905 if ((ex=SSL_get_ex_data(s, SSL_get_TLSA_ex_data_idx())) == NULL ||
906 (tlsa_record=ex->tlsa_record) == NULL ||
907 (tlsa_record==(void *)-1 && (ok=0,ctx->error=X509_V_ERR_INVALID_CA)) || /* temporary code? */
909 * X509_verify_cert initially starts throwing ok=0 upon
910 * failure to build certificate chain. As all certificate
911 * usages except for 3 require verifiable chain, ok=0 at
912 * non-zero depth is fatal. More specifically ok=0 at zero
913 * depth is allowed only for usage 3. Special note about
914 * usage 2. The chain is supposed to be filled by
915 * dane_get_issuer, or once again we should tolerate ok=0
916 * only in usage 3 case.
919 if (s->verify_callback) return s->verify_callback(ok,ctx);
924 unsigned int reclen, certificate_usage;
926 memcpy(&reclen,tlsa_record,sizeof(reclen));
928 if (reclen==0) break;
930 tlsa_record += sizeof(reclen);
932 if (!(ex->tlsa_mask&mask)) { /* not matched yet */
934 * tlsa_record[0] Certificate Usage field
935 * tlsa_record[1] Selector field
936 * tlsa_record[2] Matching Type Field
937 * tlsa_record+3 Certificate Association data
939 certificate_usage = tlsa_record[0];
941 if (depth==0 || certificate_usage==0 || certificate_usage==2) {
942 tlsa_ret = tlsa_cmp(cert,tlsa_record,reclen);
944 ex->tlsa_witness = depth<<8|certificate_usage;
945 ex->tlsa_mask |= mask;
948 else if (tlsa_ret==-1) {
949 ex->tlsa_witness = -1; /* something phishy? */
950 ex->tlsa_mask |= mask;
955 tlsa_record += reclen;
960 if (ex->tlsa_witness==-1) /* no match */
961 ctx->error = X509_V_ERR_CERT_UNTRUSTED, ok=0;
963 ctx->error = X509_V_OK, ok=1;
966 if (s->verify_callback) return s->verify_callback(ok,ctx);
970 static int dane_get_issuer(X509 **issuer,X509_STORE_CTX *ctx,X509 *x)
972 SSL *s = X509_STORE_CTX_get_ex_data(ctx,SSL_get_ex_data_X509_STORE_CTX_idx());
973 TLSA_EX_DATA *ex=SSL_get_ex_data(s, SSL_get_TLSA_ex_data_idx());
977 return ex->get_issuer(issuer,ctx,x);
981 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk)
985 X509_STORE *verify_store;
987 #ifndef OPENSSL_NO_DANE
991 if (s->cert->verify_store)
992 verify_store = s->cert->verify_store;
994 verify_store = s->ctx->cert_store;
996 if ((sk == NULL) || (sk_X509_num(sk) == 0))
999 x=sk_X509_value(sk,0);
1000 if(!X509_STORE_CTX_init(&ctx,verify_store,x,sk))
1002 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,ERR_R_X509_LIB);
1005 /* Set suite B flags if needed */
1006 X509_STORE_CTX_set_flags(&ctx, tls1_suiteb(s));
1008 if (SSL_get_verify_depth(s) >= 0)
1009 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s));
1011 X509_STORE_CTX_set_ex_data(&ctx,SSL_get_ex_data_X509_STORE_CTX_idx(),s);
1013 /* We need to inherit the verify parameters. These can be determined by
1014 * the context: if its a server it will verify SSL client certificates
1018 X509_STORE_CTX_set_default(&ctx,
1019 s->server ? "ssl_client" : "ssl_server");
1020 /* Anything non-default in "param" should overwrite anything in the
1023 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param);
1025 #ifndef OPENSSL_NO_DANE
1027 (ex=SSL_get_ex_data(s, SSL_get_TLSA_ex_data_idx()))!=NULL)
1029 const unsigned char *tlsa_record = ex->tlsa_record;
1032 * See if there are usable certificates we can add
1035 while (tlsa_record!=(void *)-1)
1037 unsigned int reclen;
1039 memcpy (&reclen,tlsa_record,sizeof(reclen));
1041 if (reclen==0) break;
1043 tlsa_record += sizeof(reclen);
1045 if (tlsa_record[0]==2 &&
1046 tlsa_record[1]==0 && /* full certificate */
1047 tlsa_record[2]==0) /* itself */
1049 ex->get_issuer = ctx.get_issuer;
1050 ctx.get_issuer = dane_get_issuer;
1054 tlsa_record += reclen;
1058 ex->tlsa_witness = -1;
1059 X509_STORE_CTX_set_verify_cb(&ctx, dane_verify_callback);
1063 if (s->verify_callback)
1064 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback);
1066 if (s->ctx->app_verify_callback != NULL)
1067 #if 1 /* new with OpenSSL 0.9.7 */
1068 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg);
1070 i=s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */
1074 #ifndef OPENSSL_NO_X509_VERIFY
1075 i=X509_verify_cert(&ctx);
1078 ctx.error=X509_V_ERR_APPLICATION_VERIFICATION;
1079 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_NO_VERIFY_CALLBACK);
1083 s->verify_result=ctx.error;
1084 X509_STORE_CTX_cleanup(&ctx);
1089 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,STACK_OF(X509_NAME) *name_list)
1091 if (*ca_list != NULL)
1092 sk_X509_NAME_pop_free(*ca_list,X509_NAME_free);
1097 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk)
1100 STACK_OF(X509_NAME) *ret;
1103 ret=sk_X509_NAME_new_null();
1104 for (i=0; i<sk_X509_NAME_num(sk); i++)
1106 name=X509_NAME_dup(sk_X509_NAME_value(sk,i));
1107 if ((name == NULL) || !sk_X509_NAME_push(ret,name))
1109 sk_X509_NAME_pop_free(ret,X509_NAME_free);
1116 void SSL_set_client_CA_list(SSL *s,STACK_OF(X509_NAME) *name_list)
1118 set_client_CA_list(&(s->client_CA),name_list);
1121 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,STACK_OF(X509_NAME) *name_list)
1123 set_client_CA_list(&(ctx->client_CA),name_list);
1126 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
1128 return(ctx->client_CA);
1131 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
1133 if (s->type == SSL_ST_CONNECT)
1134 { /* we are in the client */
1135 if (((s->version>>8) == SSL3_VERSION_MAJOR) &&
1137 return(s->s3->tmp.ca_names);
1143 if (s->client_CA != NULL)
1144 return(s->client_CA);
1146 return(s->ctx->client_CA);
1150 static int add_client_CA(STACK_OF(X509_NAME) **sk,X509 *x)
1154 if (x == NULL) return(0);
1155 if ((*sk == NULL) && ((*sk=sk_X509_NAME_new_null()) == NULL))
1158 if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL)
1161 if (!sk_X509_NAME_push(*sk,name))
1163 X509_NAME_free(name);
1169 int SSL_add_client_CA(SSL *ssl,X509 *x)
1171 return(add_client_CA(&(ssl->client_CA),x));
1174 int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x)
1176 return(add_client_CA(&(ctx->client_CA),x));
1179 static int xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1181 return(X509_NAME_cmp(*a,*b));
1184 #ifndef OPENSSL_NO_STDIO
1186 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
1187 * it doesn't really have anything to do with clients (except that a common use
1188 * for a stack of CAs is to send it to the client). Actually, it doesn't have
1189 * much to do with CAs, either, since it will load any old cert.
1190 * \param file the file containing one or more certs.
1191 * \return a ::STACK containing the certs.
1193 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
1198 STACK_OF(X509_NAME) *ret = NULL,*sk;
1200 sk=sk_X509_NAME_new(xname_cmp);
1202 in=BIO_new(BIO_s_file_internal());
1204 if ((sk == NULL) || (in == NULL))
1206 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE);
1210 if (!BIO_read_filename(in,file))
1215 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL)
1219 ret = sk_X509_NAME_new_null();
1222 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE);
1226 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
1227 /* check for duplicates */
1228 xn=X509_NAME_dup(xn);
1229 if (xn == NULL) goto err;
1230 if (sk_X509_NAME_find(sk,xn) >= 0)
1234 sk_X509_NAME_push(sk,xn);
1235 sk_X509_NAME_push(ret,xn);
1242 if (ret != NULL) sk_X509_NAME_pop_free(ret,X509_NAME_free);
1245 if (sk != NULL) sk_X509_NAME_free(sk);
1246 if (in != NULL) BIO_free(in);
1247 if (x != NULL) X509_free(x);
1255 * Add a file of certs to a stack.
1256 * \param stack the stack to add to.
1257 * \param file the file to add from. All certs in this file that are not
1258 * already in the stack will be added.
1259 * \return 1 for success, 0 for failure. Note that in the case of failure some
1260 * certs may have been added to \c stack.
1263 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
1270 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b);
1272 oldcmp=sk_X509_NAME_set_cmp_func(stack,xname_cmp);
1274 in=BIO_new(BIO_s_file_internal());
1278 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE);
1282 if (!BIO_read_filename(in,file))
1287 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL)
1289 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
1290 xn=X509_NAME_dup(xn);
1291 if (xn == NULL) goto err;
1292 if (sk_X509_NAME_find(stack,xn) >= 0)
1295 sk_X509_NAME_push(stack,xn);
1310 (void)sk_X509_NAME_set_cmp_func(stack,oldcmp);
1316 * Add a directory of certs to a stack.
1317 * \param stack the stack to append to.
1318 * \param dir the directory to append from. All files in this directory will be
1319 * examined as potential certs. Any that are acceptable to
1320 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
1322 * \return 1 for success, 0 for failure. Note that in the case of failure some
1323 * certs may have been added to \c stack.
1326 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
1329 OPENSSL_DIR_CTX *d = NULL;
1330 const char *filename;
1333 CRYPTO_w_lock(CRYPTO_LOCK_READDIR);
1335 /* Note that a side effect is that the CAs will be sorted by name */
1337 while((filename = OPENSSL_DIR_read(&d, dir)))
1342 if(strlen(dir)+strlen(filename)+2 > sizeof buf)
1344 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,SSL_R_PATH_TOO_LONG);
1348 #ifdef OPENSSL_SYS_VMS
1349 r = BIO_snprintf(buf,sizeof buf,"%s%s",dir,filename);
1351 r = BIO_snprintf(buf,sizeof buf,"%s/%s",dir,filename);
1353 if (r <= 0 || r >= (int)sizeof(buf))
1355 if(!SSL_add_file_cert_subjects_to_stack(stack,buf))
1361 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
1362 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
1363 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
1370 if (d) OPENSSL_DIR_end(&d);
1371 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR);
1375 /* Add a certificate to a BUF_MEM structure */
1377 static int ssl_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x)
1383 if (!BUF_MEM_grow_clean(buf,(int)(n+(*l)+3)))
1385 SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF,ERR_R_BUF_LIB);
1388 p=(unsigned char *)&(buf->data[*l]);
1396 /* Add certificate chain to internal SSL BUF_MEM strcuture */
1397 int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l)
1399 BUF_MEM *buf = s->init_buf;
1404 STACK_OF(X509) *extra_certs;
1405 X509_STORE *chain_store;
1412 if (s->cert->chain_store)
1413 chain_store = s->cert->chain_store;
1415 chain_store = s->ctx->cert_store;
1417 /* If we have a certificate specific chain use it, else use
1420 if (cpk && cpk->chain)
1421 extra_certs = cpk->chain;
1423 extra_certs = s->ctx->extra_certs;
1425 if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || extra_certs)
1430 /* TLSv1 sends a chain with nothing in it, instead of an alert */
1431 if (!BUF_MEM_grow_clean(buf,10))
1433 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN,ERR_R_BUF_LIB);
1440 if (!ssl_add_cert_to_buf(buf, l, x))
1445 X509_STORE_CTX xs_ctx;
1447 if (!X509_STORE_CTX_init(&xs_ctx,chain_store,x,NULL))
1449 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN,ERR_R_X509_LIB);
1452 X509_verify_cert(&xs_ctx);
1453 /* Don't leave errors in the queue */
1455 for (i=0; i < sk_X509_num(xs_ctx.chain); i++)
1457 x = sk_X509_value(xs_ctx.chain, i);
1459 if (!ssl_add_cert_to_buf(buf, l, x))
1461 X509_STORE_CTX_cleanup(&xs_ctx);
1465 X509_STORE_CTX_cleanup(&xs_ctx);
1468 for (i=0; i<sk_X509_num(extra_certs); i++)
1470 x=sk_X509_value(extra_certs,i);
1471 if (!ssl_add_cert_to_buf(buf, l, x))
1478 /* Build a certificate chain for current certificate */
1479 int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags)
1481 CERT_PKEY *cpk = c->key;
1482 X509_STORE_CTX xs_ctx;
1483 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
1486 unsigned long error;
1490 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
1493 /* Rearranging and check the chain: add everything to a store */
1494 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
1496 chain_store = X509_STORE_new();
1499 for (i = 0; i < sk_X509_num(cpk->chain); i++)
1501 x = sk_X509_value(cpk->chain, i);
1502 if (!X509_STORE_add_cert(chain_store, x))
1504 error = ERR_peek_last_error();
1505 if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
1506 ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
1511 /* Add EE cert too: it might be self signed */
1512 if (!X509_STORE_add_cert(chain_store, cpk->x509))
1514 error = ERR_peek_last_error();
1515 if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
1516 ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
1524 chain_store = c->chain_store;
1526 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
1527 untrusted = cpk->chain;
1530 if (!X509_STORE_CTX_init(&xs_ctx, chain_store, cpk->x509, untrusted))
1532 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
1535 /* Set suite B flags if needed */
1536 X509_STORE_CTX_set_flags(&xs_ctx, c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
1538 i = X509_verify_cert(&xs_ctx);
1539 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR)
1541 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
1547 chain = X509_STORE_CTX_get1_chain(&xs_ctx);
1550 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
1551 i = X509_STORE_CTX_get_error(&xs_ctx);
1552 ERR_add_error_data(2, "Verify error:",
1553 X509_verify_cert_error_string(i));
1555 X509_STORE_CTX_cleanup(&xs_ctx);
1558 X509_STORE_CTX_cleanup(&xs_ctx);
1560 sk_X509_pop_free(cpk->chain, X509_free);
1561 /* Remove EE certificate from chain */
1562 x = sk_X509_shift(chain);
1564 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT)
1566 if (sk_X509_num(chain) > 0)
1568 /* See if last cert is self signed */
1569 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
1570 X509_check_purpose(x, -1, 0);
1571 if (x->ex_flags & EXFLAG_SS)
1573 x = sk_X509_pop(chain);
1582 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
1583 X509_STORE_free(chain_store);
1588 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
1590 X509_STORE **pstore;
1592 pstore = &c->chain_store;
1594 pstore = &c->verify_store;
1596 X509_STORE_free(*pstore);
1599 CRYPTO_add(&store->references, 1, CRYPTO_LOCK_X509_STORE);