1 /*
2  * ! \file ssl/ssl_cert.c
3  */
4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5  * All rights reserved.
6  *
7  * This package is an SSL implementation written
8  * by Eric Young (eay@cryptsoft.com).
9  * The implementation was written so as to conform with Netscapes SSL.
10  *
11  * This library is free for commercial and non-commercial use as long as
12  * the following conditions are aheared to.  The following conditions
13  * apply to all code found in this distribution, be it the RC4, RSA,
14  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
15  * included with this distribution is covered by the same copyright terms
16  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
17  *
18  * Copyright remains Eric Young's, and as such any Copyright notices in
19  * the code are not to be removed.
20  * If this package is used in a product, Eric Young should be given attribution
21  * as the author of the parts of the library used.
22  * This can be in the form of a textual message at program startup or
23  * in documentation (online or textual) provided with the package.
24  *
25  * Redistribution and use in source and binary forms, with or without
26  * modification, are permitted provided that the following conditions
27  * are met:
28  * 1. Redistributions of source code must retain the copyright
29  *    notice, this list of conditions and the following disclaimer.
30  * 2. Redistributions in binary form must reproduce the above copyright
31  *    notice, this list of conditions and the following disclaimer in the
32  *    documentation and/or other materials provided with the distribution.
33  * 3. All advertising materials mentioning features or use of this software
34  *    must display the following acknowledgement:
35  *    "This product includes cryptographic software written by
36  *     Eric Young (eay@cryptsoft.com)"
37  *    The word 'cryptographic' can be left out if the rouines from the library
38  *    being used are not cryptographic related :-).
39  * 4. If you include any Windows specific code (or a derivative thereof) from
40  *    the apps directory (application code) you must include an acknowledgement:
41  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
42  *
43  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53  * SUCH DAMAGE.
54  *
55  * The licence and distribution terms for any publically available version or
56  * derivative of this code cannot be changed.  i.e. this code cannot simply be
57  * copied and put under another distribution licence
58  * [including the GNU Public Licence.]
59  */
60 /* ====================================================================
61  * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
62  *
63  * Redistribution and use in source and binary forms, with or without
64  * modification, are permitted provided that the following conditions
65  * are met:
66  *
67  * 1. Redistributions of source code must retain the above copyright
68  *    notice, this list of conditions and the following disclaimer.
69  *
70  * 2. Redistributions in binary form must reproduce the above copyright
71  *    notice, this list of conditions and the following disclaimer in
72  *    the documentation and/or other materials provided with the
73  *    distribution.
74  *
75  * 3. All advertising materials mentioning features or use of this
76  *    software must display the following acknowledgment:
77  *    "This product includes software developed by the OpenSSL Project
78  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
79  *
80  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81  *    endorse or promote products derived from this software without
82  *    prior written permission. For written permission, please contact
83  *    openssl-core@openssl.org.
84  *
85  * 5. Products derived from this software may not be called "OpenSSL"
86  *    nor may "OpenSSL" appear in their names without prior written
87  *    permission of the OpenSSL Project.
88  *
89  * 6. Redistributions of any form whatsoever must retain the following
90  *    acknowledgment:
91  *    "This product includes software developed by the OpenSSL Project
92  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
93  *
94  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
98  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105  * OF THE POSSIBILITY OF SUCH DAMAGE.
106  * ====================================================================
107  *
108  * This product includes cryptographic software written by Eric Young
109  * (eay@cryptsoft.com).  This product includes software written by Tim
110  * Hudson (tjh@cryptsoft.com).
111  *
112  */
113 /* ====================================================================
114  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115  * ECC cipher suite support in OpenSSL originally developed by
116  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
117  */
118 
119 #include <stdio.h>
120 
121 #include "e_os.h"
122 #ifndef NO_SYS_TYPES_H
123 # include <sys/types.h>
124 #endif
125 
126 #include "o_dir.h"
127 #include <openssl/objects.h>
128 #include <openssl/bio.h>
129 #include <openssl/pem.h>
130 #include <openssl/x509v3.h>
131 #ifndef OPENSSL_NO_DH
132 # include <openssl/dh.h>
133 #endif
134 #include <openssl/bn.h>
135 #include "ssl_locl.h"
136 
SSL_get_ex_data_X509_STORE_CTX_idx(void)137 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
138 {
139     static volatile int ssl_x509_store_ctx_idx = -1;
140     int got_write_lock = 0;
141 
142     if (((size_t)&ssl_x509_store_ctx_idx &
143          (sizeof(ssl_x509_store_ctx_idx) - 1))
144         == 0) {                 /* check alignment, practically always true */
145         int ret;
146 
147         if ((ret = ssl_x509_store_ctx_idx) < 0) {
148             CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
149             if ((ret = ssl_x509_store_ctx_idx) < 0) {
150                 ret = ssl_x509_store_ctx_idx =
151                     X509_STORE_CTX_get_ex_new_index(0,
152                                                     "SSL for verify callback",
153                                                     NULL, NULL, NULL);
154             }
155             CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
156         }
157 
158         return ret;
159     } else {                    /* commonly eliminated */
160 
161         CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
162 
163         if (ssl_x509_store_ctx_idx < 0) {
164             CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
165             CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
166             got_write_lock = 1;
167 
168             if (ssl_x509_store_ctx_idx < 0) {
169                 ssl_x509_store_ctx_idx =
170                     X509_STORE_CTX_get_ex_new_index(0,
171                                                     "SSL for verify callback",
172                                                     NULL, NULL, NULL);
173             }
174         }
175 
176         if (got_write_lock)
177             CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
178         else
179             CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
180 
181         return ssl_x509_store_ctx_idx;
182     }
183 }
184 
ssl_cert_set_default_md(CERT * cert)185 void ssl_cert_set_default_md(CERT *cert)
186 {
187     /* Set digest values to defaults */
188 #ifndef OPENSSL_NO_DSA
189     cert->pkeys[SSL_PKEY_DSA_SIGN].digest = EVP_sha1();
190 #endif
191 #ifndef OPENSSL_NO_RSA
192     cert->pkeys[SSL_PKEY_RSA_SIGN].digest = EVP_sha1();
193     cert->pkeys[SSL_PKEY_RSA_ENC].digest = EVP_sha1();
194 #endif
195 #ifndef OPENSSL_NO_ECDSA
196     cert->pkeys[SSL_PKEY_ECC].digest = EVP_sha1();
197 #endif
198 }
199 
ssl_cert_new(void)200 CERT *ssl_cert_new(void)
201 {
202     CERT *ret;
203 
204     ret = (CERT *)OPENSSL_malloc(sizeof(CERT));
205     if (ret == NULL) {
206         SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
207         return (NULL);
208     }
209     memset(ret, 0, sizeof(CERT));
210 
211     ret->key = &(ret->pkeys[SSL_PKEY_RSA_ENC]);
212     ret->references = 1;
213     ssl_cert_set_default_md(ret);
214     return (ret);
215 }
216 
ssl_cert_dup(CERT * cert)217 CERT *ssl_cert_dup(CERT *cert)
218 {
219     CERT *ret;
220     int i;
221 
222     ret = (CERT *)OPENSSL_malloc(sizeof(CERT));
223     if (ret == NULL) {
224         SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
225         return (NULL);
226     }
227 
228     memset(ret, 0, sizeof(CERT));
229 
230     ret->references = 1;
231     ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]];
232     /*
233      * or ret->key = ret->pkeys + (cert->key - cert->pkeys), if you find that
234      * more readable
235      */
236 
237     ret->valid = cert->valid;
238     ret->mask_k = cert->mask_k;
239     ret->mask_a = cert->mask_a;
240     ret->export_mask_k = cert->export_mask_k;
241     ret->export_mask_a = cert->export_mask_a;
242 
243 #ifndef OPENSSL_NO_RSA
244     if (cert->rsa_tmp != NULL) {
245         RSA_up_ref(cert->rsa_tmp);
246         ret->rsa_tmp = cert->rsa_tmp;
247     }
248     ret->rsa_tmp_cb = cert->rsa_tmp_cb;
249 #endif
250 
251 #ifndef OPENSSL_NO_DH
252     if (cert->dh_tmp != NULL) {
253         ret->dh_tmp = DHparams_dup(cert->dh_tmp);
254         if (ret->dh_tmp == NULL) {
255             SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB);
256             goto err;
257         }
258         if (cert->dh_tmp->priv_key) {
259             BIGNUM *b = BN_dup(cert->dh_tmp->priv_key);
260             if (!b) {
261                 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
262                 goto err;
263             }
264             ret->dh_tmp->priv_key = b;
265         }
266         if (cert->dh_tmp->pub_key) {
267             BIGNUM *b = BN_dup(cert->dh_tmp->pub_key);
268             if (!b) {
269                 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
270                 goto err;
271             }
272             ret->dh_tmp->pub_key = b;
273         }
274     }
275     ret->dh_tmp_cb = cert->dh_tmp_cb;
276 #endif
277 
278 #ifndef OPENSSL_NO_ECDH
279     if (cert->ecdh_tmp) {
280         ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp);
281         if (ret->ecdh_tmp == NULL) {
282             SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB);
283             goto err;
284         }
285     }
286     ret->ecdh_tmp_cb = cert->ecdh_tmp_cb;
287     ret->ecdh_tmp_auto = cert->ecdh_tmp_auto;
288 #endif
289 
290     for (i = 0; i < SSL_PKEY_NUM; i++) {
291         CERT_PKEY *cpk = cert->pkeys + i;
292         CERT_PKEY *rpk = ret->pkeys + i;
293         if (cpk->x509 != NULL) {
294             rpk->x509 = cpk->x509;
295             CRYPTO_add(&rpk->x509->references, 1, CRYPTO_LOCK_X509);
296         }
297 
298         if (cpk->privatekey != NULL) {
299             rpk->privatekey = cpk->privatekey;
300             CRYPTO_add(&cpk->privatekey->references, 1, CRYPTO_LOCK_EVP_PKEY);
301         }
302 
303         if (cpk->chain) {
304             rpk->chain = X509_chain_up_ref(cpk->chain);
305             if (!rpk->chain) {
306                 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
307                 goto err;
308             }
309         }
310         rpk->valid_flags = 0;
311 #ifndef OPENSSL_NO_TLSEXT
312         if (cert->pkeys[i].serverinfo != NULL) {
313             /* Just copy everything. */
314             ret->pkeys[i].serverinfo =
315                 OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
316             if (ret->pkeys[i].serverinfo == NULL) {
317                 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
318                 goto err;
319             }
320             ret->pkeys[i].serverinfo_length =
321                 cert->pkeys[i].serverinfo_length;
322             memcpy(ret->pkeys[i].serverinfo,
323                    cert->pkeys[i].serverinfo,
324                    cert->pkeys[i].serverinfo_length);
325         }
326 #endif
327     }
328 
329     /*
330      * Set digests to defaults. NB: we don't copy existing values as they
331      * will be set during handshake.
332      */
333     ssl_cert_set_default_md(ret);
334     /* Peer sigalgs set to NULL as we get these from handshake too */
335     ret->peer_sigalgs = NULL;
336     ret->peer_sigalgslen = 0;
337     /* Configured sigalgs however we copy across */
338 
339     if (cert->conf_sigalgs) {
340         ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen);
341         if (!ret->conf_sigalgs)
342             goto err;
343         memcpy(ret->conf_sigalgs, cert->conf_sigalgs, cert->conf_sigalgslen);
344         ret->conf_sigalgslen = cert->conf_sigalgslen;
345     } else
346         ret->conf_sigalgs = NULL;
347 
348     if (cert->client_sigalgs) {
349         ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen);
350         if (!ret->client_sigalgs)
351             goto err;
352         memcpy(ret->client_sigalgs, cert->client_sigalgs,
353                cert->client_sigalgslen);
354         ret->client_sigalgslen = cert->client_sigalgslen;
355     } else
356         ret->client_sigalgs = NULL;
357     /* Shared sigalgs also NULL */
358     ret->shared_sigalgs = NULL;
359     /* Copy any custom client certificate types */
360     if (cert->ctypes) {
361         ret->ctypes = OPENSSL_malloc(cert->ctype_num);
362         if (!ret->ctypes)
363             goto err;
364         memcpy(ret->ctypes, cert->ctypes, cert->ctype_num);
365         ret->ctype_num = cert->ctype_num;
366     }
367 
368     ret->cert_flags = cert->cert_flags;
369 
370     ret->cert_cb = cert->cert_cb;
371     ret->cert_cb_arg = cert->cert_cb_arg;
372 
373     if (cert->verify_store) {
374         CRYPTO_add(&cert->verify_store->references, 1,
375                    CRYPTO_LOCK_X509_STORE);
376         ret->verify_store = cert->verify_store;
377     }
378 
379     if (cert->chain_store) {
380         CRYPTO_add(&cert->chain_store->references, 1, CRYPTO_LOCK_X509_STORE);
381         ret->chain_store = cert->chain_store;
382     }
383 
384     ret->ciphers_raw = NULL;
385 
386 #ifndef OPENSSL_NO_TLSEXT
387     if (!custom_exts_copy(&ret->cli_ext, &cert->cli_ext))
388         goto err;
389     if (!custom_exts_copy(&ret->srv_ext, &cert->srv_ext))
390         goto err;
391 #endif
392 
393     return (ret);
394 
395  err:
396 #ifndef OPENSSL_NO_RSA
397     if (ret->rsa_tmp != NULL)
398         RSA_free(ret->rsa_tmp);
399 #endif
400 #ifndef OPENSSL_NO_DH
401     if (ret->dh_tmp != NULL)
402         DH_free(ret->dh_tmp);
403 #endif
404 #ifndef OPENSSL_NO_ECDH
405     if (ret->ecdh_tmp != NULL)
406         EC_KEY_free(ret->ecdh_tmp);
407 #endif
408 
409 #ifndef OPENSSL_NO_TLSEXT
410     custom_exts_free(&ret->cli_ext);
411     custom_exts_free(&ret->srv_ext);
412 #endif
413 
414     ssl_cert_clear_certs(ret);
415     OPENSSL_free(ret);
416 
417     return NULL;
418 }
419 
420 /* Free up and clear all certificates and chains */
421 
ssl_cert_clear_certs(CERT * c)422 void ssl_cert_clear_certs(CERT *c)
423 {
424     int i;
425     if (c == NULL)
426         return;
427     for (i = 0; i < SSL_PKEY_NUM; i++) {
428         CERT_PKEY *cpk = c->pkeys + i;
429         if (cpk->x509) {
430             X509_free(cpk->x509);
431             cpk->x509 = NULL;
432         }
433         if (cpk->privatekey) {
434             EVP_PKEY_free(cpk->privatekey);
435             cpk->privatekey = NULL;
436         }
437         if (cpk->chain) {
438             sk_X509_pop_free(cpk->chain, X509_free);
439             cpk->chain = NULL;
440         }
441 #ifndef OPENSSL_NO_TLSEXT
442         if (cpk->serverinfo) {
443             OPENSSL_free(cpk->serverinfo);
444             cpk->serverinfo = NULL;
445             cpk->serverinfo_length = 0;
446         }
447 #endif
448         /* Clear all flags apart from explicit sign */
449         cpk->valid_flags &= CERT_PKEY_EXPLICIT_SIGN;
450     }
451 }
452 
ssl_cert_free(CERT * c)453 void ssl_cert_free(CERT *c)
454 {
455     int i;
456 
457     if (c == NULL)
458         return;
459 
460     i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT);
461 #ifdef REF_PRINT
462     REF_PRINT("CERT", c);
463 #endif
464     if (i > 0)
465         return;
466 #ifdef REF_CHECK
467     if (i < 0) {
468         fprintf(stderr, "ssl_cert_free, bad reference count\n");
469         abort();                /* ok */
470     }
471 #endif
472 
473 #ifndef OPENSSL_NO_RSA
474     if (c->rsa_tmp)
475         RSA_free(c->rsa_tmp);
476 #endif
477 #ifndef OPENSSL_NO_DH
478     if (c->dh_tmp)
479         DH_free(c->dh_tmp);
480 #endif
481 #ifndef OPENSSL_NO_ECDH
482     if (c->ecdh_tmp)
483         EC_KEY_free(c->ecdh_tmp);
484 #endif
485 
486     ssl_cert_clear_certs(c);
487     if (c->peer_sigalgs)
488         OPENSSL_free(c->peer_sigalgs);
489     if (c->conf_sigalgs)
490         OPENSSL_free(c->conf_sigalgs);
491     if (c->client_sigalgs)
492         OPENSSL_free(c->client_sigalgs);
493     if (c->shared_sigalgs)
494         OPENSSL_free(c->shared_sigalgs);
495     if (c->ctypes)
496         OPENSSL_free(c->ctypes);
497     if (c->verify_store)
498         X509_STORE_free(c->verify_store);
499     if (c->chain_store)
500         X509_STORE_free(c->chain_store);
501     if (c->ciphers_raw)
502         OPENSSL_free(c->ciphers_raw);
503 #ifndef OPENSSL_NO_TLSEXT
504     custom_exts_free(&c->cli_ext);
505     custom_exts_free(&c->srv_ext);
506     if (c->alpn_proposed)
507         OPENSSL_free(c->alpn_proposed);
508 #endif
509     OPENSSL_free(c);
510 }
511 
ssl_cert_inst(CERT ** o)512 int ssl_cert_inst(CERT **o)
513 {
514     /*
515      * Create a CERT if there isn't already one (which cannot really happen,
516      * as it is initially created in SSL_CTX_new; but the earlier code
517      * usually allows for that one being non-existant, so we follow that
518      * behaviour, as it might turn out that there actually is a reason for it
519      * -- but I'm not sure that *all* of the existing code could cope with
520      * s->cert being NULL, otherwise we could do without the initialization
521      * in SSL_CTX_new).
522      */
523 
524     if (o == NULL) {
525         SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER);
526         return (0);
527     }
528     if (*o == NULL) {
529         if ((*o = ssl_cert_new()) == NULL) {
530             SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE);
531             return (0);
532         }
533     }
534     return (1);
535 }
536 
ssl_cert_set0_chain(CERT * c,STACK_OF (X509)* chain)537 int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain)
538 {
539     CERT_PKEY *cpk = c->key;
540     if (!cpk)
541         return 0;
542     if (cpk->chain)
543         sk_X509_pop_free(cpk->chain, X509_free);
544     cpk->chain = chain;
545     return 1;
546 }
547 
ssl_cert_set1_chain(CERT * c,STACK_OF (X509)* chain)548 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain)
549 {
550     STACK_OF(X509) *dchain;
551     if (!chain)
552         return ssl_cert_set0_chain(c, NULL);
553     dchain = X509_chain_up_ref(chain);
554     if (!dchain)
555         return 0;
556     if (!ssl_cert_set0_chain(c, dchain)) {
557         sk_X509_pop_free(dchain, X509_free);
558         return 0;
559     }
560     return 1;
561 }
562 
ssl_cert_add0_chain_cert(CERT * c,X509 * x)563 int ssl_cert_add0_chain_cert(CERT *c, X509 *x)
564 {
565     CERT_PKEY *cpk = c->key;
566     if (!cpk)
567         return 0;
568     if (!cpk->chain)
569         cpk->chain = sk_X509_new_null();
570     if (!cpk->chain || !sk_X509_push(cpk->chain, x))
571         return 0;
572     return 1;
573 }
574 
ssl_cert_add1_chain_cert(CERT * c,X509 * x)575 int ssl_cert_add1_chain_cert(CERT *c, X509 *x)
576 {
577     if (!ssl_cert_add0_chain_cert(c, x))
578         return 0;
579     CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
580     return 1;
581 }
582 
ssl_cert_select_current(CERT * c,X509 * x)583 int ssl_cert_select_current(CERT *c, X509 *x)
584 {
585     int i;
586     if (x == NULL)
587         return 0;
588     for (i = 0; i < SSL_PKEY_NUM; i++) {
589         CERT_PKEY *cpk = c->pkeys + i;
590         if (cpk->x509 == x && cpk->privatekey) {
591             c->key = cpk;
592             return 1;
593         }
594     }
595 
596     for (i = 0; i < SSL_PKEY_NUM; i++) {
597         CERT_PKEY *cpk = c->pkeys + i;
598         if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
599             c->key = cpk;
600             return 1;
601         }
602     }
603     return 0;
604 }
605 
ssl_cert_set_current(CERT * c,long op)606 int ssl_cert_set_current(CERT *c, long op)
607 {
608     int i, idx;
609     if (!c)
610         return 0;
611     if (op == SSL_CERT_SET_FIRST)
612         idx = 0;
613     else if (op == SSL_CERT_SET_NEXT) {
614         idx = (int)(c->key - c->pkeys + 1);
615         if (idx >= SSL_PKEY_NUM)
616             return 0;
617     } else
618         return 0;
619     for (i = idx; i < SSL_PKEY_NUM; i++) {
620         CERT_PKEY *cpk = c->pkeys + i;
621         if (cpk->x509 && cpk->privatekey) {
622             c->key = cpk;
623             return 1;
624         }
625     }
626     return 0;
627 }
628 
ssl_cert_set_cert_cb(CERT * c,int (* cb)(SSL * ssl,void * arg),void * arg)629 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
630 {
631     c->cert_cb = cb;
632     c->cert_cb_arg = arg;
633 }
634 
ssl_sess_cert_new(void)635 SESS_CERT *ssl_sess_cert_new(void)
636 {
637     SESS_CERT *ret;
638 
639     ret = OPENSSL_malloc(sizeof(*ret));
640     if (ret == NULL) {
641         SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE);
642         return NULL;
643     }
644 
645     memset(ret, 0, sizeof(*ret));
646     ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]);
647     ret->references = 1;
648 
649     return ret;
650 }
651 
ssl_sess_cert_free(SESS_CERT * sc)652 void ssl_sess_cert_free(SESS_CERT *sc)
653 {
654     int i;
655 
656     if (sc == NULL)
657         return;
658 
659     i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT);
660 #ifdef REF_PRINT
661     REF_PRINT("SESS_CERT", sc);
662 #endif
663     if (i > 0)
664         return;
665 #ifdef REF_CHECK
666     if (i < 0) {
667         fprintf(stderr, "ssl_sess_cert_free, bad reference count\n");
668         abort();                /* ok */
669     }
670 #endif
671 
672     /* i == 0 */
673     if (sc->cert_chain != NULL)
674         sk_X509_pop_free(sc->cert_chain, X509_free);
675     for (i = 0; i < SSL_PKEY_NUM; i++) {
676         if (sc->peer_pkeys[i].x509 != NULL)
677             X509_free(sc->peer_pkeys[i].x509);
678 #if 0                           /* We don't have the peer's private key.
679                                  * These lines are just * here as a reminder
680                                  * that we're still using a
681                                  * not-quite-appropriate * data structure. */
682         if (sc->peer_pkeys[i].privatekey != NULL)
683             EVP_PKEY_free(sc->peer_pkeys[i].privatekey);
684 #endif
685     }
686 
687 #ifndef OPENSSL_NO_RSA
688     if (sc->peer_rsa_tmp != NULL)
689         RSA_free(sc->peer_rsa_tmp);
690 #endif
691 #ifndef OPENSSL_NO_DH
692     if (sc->peer_dh_tmp != NULL)
693         DH_free(sc->peer_dh_tmp);
694 #endif
695 #ifndef OPENSSL_NO_ECDH
696     if (sc->peer_ecdh_tmp != NULL)
697         EC_KEY_free(sc->peer_ecdh_tmp);
698 #endif
699 
700     OPENSSL_free(sc);
701 }
702 
ssl_set_peer_cert_type(SESS_CERT * sc,int type)703 int ssl_set_peer_cert_type(SESS_CERT *sc, int type)
704 {
705     sc->peer_cert_type = type;
706     return (1);
707 }
708 
ssl_verify_cert_chain(SSL * s,STACK_OF (X509)* sk)709 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
710 {
711     X509 *x;
712     int i;
713     X509_STORE *verify_store;
714     X509_STORE_CTX ctx;
715 
716     if (s->cert->verify_store)
717         verify_store = s->cert->verify_store;
718     else
719         verify_store = s->ctx->cert_store;
720 
721     if ((sk == NULL) || (sk_X509_num(sk) == 0))
722         return (0);
723 
724     x = sk_X509_value(sk, 0);
725     if (!X509_STORE_CTX_init(&ctx, verify_store, x, sk)) {
726         SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
727         return (0);
728     }
729     /* Set suite B flags if needed */
730     X509_STORE_CTX_set_flags(&ctx, tls1_suiteb(s));
731 #if 0
732     if (SSL_get_verify_depth(s) >= 0)
733         X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s));
734 #endif
735     X509_STORE_CTX_set_ex_data(&ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s);
736 
737     /*
738      * We need to inherit the verify parameters. These can be determined by
739      * the context: if its a server it will verify SSL client certificates or
740      * vice versa.
741      */
742 
743     X509_STORE_CTX_set_default(&ctx, s->server ? "ssl_client" : "ssl_server");
744     /*
745      * Anything non-default in "param" should overwrite anything in the ctx.
746      */
747     X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param);
748 
749     if (s->verify_callback)
750         X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback);
751 
752     if (s->ctx->app_verify_callback != NULL)
753 #if 1                           /* new with OpenSSL 0.9.7 */
754         i = s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg);
755 #else
756         i = s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */
757 #endif
758     else {
759 #ifndef OPENSSL_NO_X509_VERIFY
760         i = X509_verify_cert(&ctx);
761 #else
762         i = 0;
763         ctx.error = X509_V_ERR_APPLICATION_VERIFICATION;
764         SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, SSL_R_NO_VERIFY_CALLBACK);
765 #endif
766     }
767 
768     s->verify_result = ctx.error;
769     X509_STORE_CTX_cleanup(&ctx);
770 
771     return (i);
772 }
773 
set_client_CA_list(STACK_OF (X509_NAME)** ca_list,STACK_OF (X509_NAME)* name_list)774 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,
775                                STACK_OF(X509_NAME) *name_list)
776 {
777     if (*ca_list != NULL)
778         sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
779 
780     *ca_list = name_list;
781 }
782 
STACK_OF(X509_NAME)783 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk)
784 {
785     int i;
786     STACK_OF(X509_NAME) *ret;
787     X509_NAME *name;
788 
789     ret = sk_X509_NAME_new_null();
790     for (i = 0; i < sk_X509_NAME_num(sk); i++) {
791         name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
792         if ((name == NULL) || !sk_X509_NAME_push(ret, name)) {
793             sk_X509_NAME_pop_free(ret, X509_NAME_free);
794             return (NULL);
795         }
796     }
797     return (ret);
798 }
799 
SSL_set_client_CA_list(SSL * s,STACK_OF (X509_NAME)* name_list)800 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
801 {
802     set_client_CA_list(&(s->client_CA), name_list);
803 }
804 
SSL_CTX_set_client_CA_list(SSL_CTX * ctx,STACK_OF (X509_NAME)* name_list)805 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
806 {
807     set_client_CA_list(&(ctx->client_CA), name_list);
808 }
809 
STACK_OF(X509_NAME)810 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
811 {
812     return (ctx->client_CA);
813 }
814 
STACK_OF(X509_NAME)815 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
816 {
817     if (s->type == SSL_ST_CONNECT) { /* we are in the client */
818         if (((s->version >> 8) == SSL3_VERSION_MAJOR) && (s->s3 != NULL))
819             return (s->s3->tmp.ca_names);
820         else
821             return (NULL);
822     } else {
823         if (s->client_CA != NULL)
824             return (s->client_CA);
825         else
826             return (s->ctx->client_CA);
827     }
828 }
829 
add_client_CA(STACK_OF (X509_NAME)** sk,X509 * x)830 static int add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x)
831 {
832     X509_NAME *name;
833 
834     if (x == NULL)
835         return (0);
836     if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL))
837         return (0);
838 
839     if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
840         return (0);
841 
842     if (!sk_X509_NAME_push(*sk, name)) {
843         X509_NAME_free(name);
844         return (0);
845     }
846     return (1);
847 }
848 
SSL_add_client_CA(SSL * ssl,X509 * x)849 int SSL_add_client_CA(SSL *ssl, X509 *x)
850 {
851     return (add_client_CA(&(ssl->client_CA), x));
852 }
853 
SSL_CTX_add_client_CA(SSL_CTX * ctx,X509 * x)854 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
855 {
856     return (add_client_CA(&(ctx->client_CA), x));
857 }
858 
xname_cmp(const X509_NAME * const * a,const X509_NAME * const * b)859 static int xname_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
860 {
861     return (X509_NAME_cmp(*a, *b));
862 }
863 
864 #ifndef OPENSSL_NO_STDIO
865 /**
866  * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
867  * it doesn't really have anything to do with clients (except that a common use
868  * for a stack of CAs is to send it to the client). Actually, it doesn't have
869  * much to do with CAs, either, since it will load any old cert.
870  * \param file the file containing one or more certs.
871  * \return a ::STACK containing the certs.
872  */
STACK_OF(X509_NAME)873 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
874 {
875     BIO *in;
876     X509 *x = NULL;
877     X509_NAME *xn = NULL;
878     STACK_OF(X509_NAME) *ret = NULL, *sk;
879 
880     sk = sk_X509_NAME_new(xname_cmp);
881 
882     in = BIO_new(BIO_s_file_internal());
883 
884     if ((sk == NULL) || (in == NULL)) {
885         SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
886         goto err;
887     }
888 
889     if (!BIO_read_filename(in, file))
890         goto err;
891 
892     for (;;) {
893         if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
894             break;
895         if (ret == NULL) {
896             ret = sk_X509_NAME_new_null();
897             if (ret == NULL) {
898                 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
899                 goto err;
900             }
901         }
902         if ((xn = X509_get_subject_name(x)) == NULL)
903             goto err;
904         /* check for duplicates */
905         xn = X509_NAME_dup(xn);
906         if (xn == NULL)
907             goto err;
908         if (sk_X509_NAME_find(sk, xn) >= 0)
909             X509_NAME_free(xn);
910         else {
911             sk_X509_NAME_push(sk, xn);
912             sk_X509_NAME_push(ret, xn);
913         }
914     }
915 
916     if (0) {
917  err:
918         if (ret != NULL)
919             sk_X509_NAME_pop_free(ret, X509_NAME_free);
920         ret = NULL;
921     }
922     if (sk != NULL)
923         sk_X509_NAME_free(sk);
924     if (in != NULL)
925         BIO_free(in);
926     if (x != NULL)
927         X509_free(x);
928     if (ret != NULL)
929         ERR_clear_error();
930     return (ret);
931 }
932 #endif
933 
934 /**
935  * Add a file of certs to a stack.
936  * \param stack the stack to add to.
937  * \param file the file to add from. All certs in this file that are not
938  * already in the stack will be added.
939  * \return 1 for success, 0 for failure. Note that in the case of failure some
940  * certs may have been added to \c stack.
941  */
942 
SSL_add_file_cert_subjects_to_stack(STACK_OF (X509_NAME)* stack,const char * file)943 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
944                                         const char *file)
945 {
946     BIO *in;
947     X509 *x = NULL;
948     X509_NAME *xn = NULL;
949     int ret = 1;
950     int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
951 
952     oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp);
953 
954     in = BIO_new(BIO_s_file_internal());
955 
956     if (in == NULL) {
957         SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,
958                ERR_R_MALLOC_FAILURE);
959         goto err;
960     }
961 
962     if (!BIO_read_filename(in, file))
963         goto err;
964 
965     for (;;) {
966         if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
967             break;
968         if ((xn = X509_get_subject_name(x)) == NULL)
969             goto err;
970         xn = X509_NAME_dup(xn);
971         if (xn == NULL)
972             goto err;
973         if (sk_X509_NAME_find(stack, xn) >= 0)
974             X509_NAME_free(xn);
975         else
976             sk_X509_NAME_push(stack, xn);
977     }
978 
979     ERR_clear_error();
980 
981     if (0) {
982  err:
983         ret = 0;
984     }
985     if (in != NULL)
986         BIO_free(in);
987     if (x != NULL)
988         X509_free(x);
989 
990     (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
991 
992     return ret;
993 }
994 
995 /**
996  * Add a directory of certs to a stack.
997  * \param stack the stack to append to.
998  * \param dir the directory to append from. All files in this directory will be
999  * examined as potential certs. Any that are acceptable to
1000  * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
1001  * included.
1002  * \return 1 for success, 0 for failure. Note that in the case of failure some
1003  * certs may have been added to \c stack.
1004  */
1005 
SSL_add_dir_cert_subjects_to_stack(STACK_OF (X509_NAME)* stack,const char * dir)1006 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
1007                                        const char *dir)
1008 {
1009     OPENSSL_DIR_CTX *d = NULL;
1010     const char *filename;
1011     int ret = 0;
1012 
1013     CRYPTO_w_lock(CRYPTO_LOCK_READDIR);
1014 
1015     /* Note that a side effect is that the CAs will be sorted by name */
1016 
1017     while ((filename = OPENSSL_DIR_read(&d, dir))) {
1018         char buf[1024];
1019         int r;
1020 
1021         if (strlen(dir) + strlen(filename) + 2 > sizeof(buf)) {
1022             SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
1023                    SSL_R_PATH_TOO_LONG);
1024             goto err;
1025         }
1026 #ifdef OPENSSL_SYS_VMS
1027         r = BIO_snprintf(buf, sizeof(buf), "%s%s", dir, filename);
1028 #else
1029         r = BIO_snprintf(buf, sizeof(buf), "%s/%s", dir, filename);
1030 #endif
1031         if (r <= 0 || r >= (int)sizeof(buf))
1032             goto err;
1033         if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
1034             goto err;
1035     }
1036 
1037     if (errno) {
1038         SYSerr(SYS_F_OPENDIR, get_last_sys_error());
1039         ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
1040         SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
1041         goto err;
1042     }
1043 
1044     ret = 1;
1045 
1046  err:
1047     if (d)
1048         OPENSSL_DIR_end(&d);
1049     CRYPTO_w_unlock(CRYPTO_LOCK_READDIR);
1050     return ret;
1051 }
1052 
1053 /* Add a certificate to a BUF_MEM structure */
1054 
ssl_add_cert_to_buf(BUF_MEM * buf,unsigned long * l,X509 * x)1055 static int ssl_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x)
1056 {
1057     int n;
1058     unsigned char *p;
1059 
1060     n = i2d_X509(x, NULL);
1061     if (n < 0 || !BUF_MEM_grow_clean(buf, (int)(n + (*l) + 3))) {
1062         SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF, ERR_R_BUF_LIB);
1063         return 0;
1064     }
1065     p = (unsigned char *)&(buf->data[*l]);
1066     l2n3(n, p);
1067     n = i2d_X509(x, &p);
1068     if (n < 0) {
1069         /* Shouldn't happen */
1070         SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF, ERR_R_BUF_LIB);
1071         return 0;
1072     }
1073     *l += n + 3;
1074 
1075     return 1;
1076 }
1077 
1078 /* Add certificate chain to internal SSL BUF_MEM strcuture */
ssl_add_cert_chain(SSL * s,CERT_PKEY * cpk,unsigned long * l)1079 int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l)
1080 {
1081     BUF_MEM *buf = s->init_buf;
1082     int no_chain;
1083     int i;
1084 
1085     X509 *x;
1086     STACK_OF(X509) *extra_certs;
1087     X509_STORE *chain_store;
1088 
1089     if (cpk)
1090         x = cpk->x509;
1091     else
1092         x = NULL;
1093 
1094     if (s->cert->chain_store)
1095         chain_store = s->cert->chain_store;
1096     else
1097         chain_store = s->ctx->cert_store;
1098 
1099     /*
1100      * If we have a certificate specific chain use it, else use parent ctx.
1101      */
1102     if (cpk && cpk->chain)
1103         extra_certs = cpk->chain;
1104     else
1105         extra_certs = s->ctx->extra_certs;
1106 
1107     if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || extra_certs)
1108         no_chain = 1;
1109     else
1110         no_chain = 0;
1111 
1112     /* TLSv1 sends a chain with nothing in it, instead of an alert */
1113     if (!BUF_MEM_grow_clean(buf, 10)) {
1114         SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_BUF_LIB);
1115         return 0;
1116     }
1117     if (x != NULL) {
1118         if (no_chain) {
1119             if (!ssl_add_cert_to_buf(buf, l, x))
1120                 return 0;
1121         } else {
1122             X509_STORE_CTX xs_ctx;
1123 
1124             if (!X509_STORE_CTX_init(&xs_ctx, chain_store, x, NULL)) {
1125                 SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_X509_LIB);
1126                 return (0);
1127             }
1128             X509_verify_cert(&xs_ctx);
1129             /* Don't leave errors in the queue */
1130             ERR_clear_error();
1131             for (i = 0; i < sk_X509_num(xs_ctx.chain); i++) {
1132                 x = sk_X509_value(xs_ctx.chain, i);
1133 
1134                 if (!ssl_add_cert_to_buf(buf, l, x)) {
1135                     X509_STORE_CTX_cleanup(&xs_ctx);
1136                     return 0;
1137                 }
1138             }
1139             X509_STORE_CTX_cleanup(&xs_ctx);
1140         }
1141     }
1142     for (i = 0; i < sk_X509_num(extra_certs); i++) {
1143         x = sk_X509_value(extra_certs, i);
1144         if (!ssl_add_cert_to_buf(buf, l, x))
1145             return 0;
1146     }
1147 
1148     return 1;
1149 }
1150 
1151 /* Build a certificate chain for current certificate */
ssl_build_cert_chain(CERT * c,X509_STORE * chain_store,int flags)1152 int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags)
1153 {
1154     CERT_PKEY *cpk = c->key;
1155     X509_STORE_CTX xs_ctx;
1156     STACK_OF(X509) *chain = NULL, *untrusted = NULL;
1157     X509 *x;
1158     int i, rv = 0;
1159     unsigned long error;
1160 
1161     if (!cpk->x509) {
1162         SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
1163         goto err;
1164     }
1165     /* Rearranging and check the chain: add everything to a store */
1166     if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
1167         chain_store = X509_STORE_new();
1168         if (!chain_store)
1169             goto err;
1170         for (i = 0; i < sk_X509_num(cpk->chain); i++) {
1171             x = sk_X509_value(cpk->chain, i);
1172             if (!X509_STORE_add_cert(chain_store, x)) {
1173                 error = ERR_peek_last_error();
1174                 if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
1175                     ERR_GET_REASON(error) !=
1176                     X509_R_CERT_ALREADY_IN_HASH_TABLE)
1177                     goto err;
1178                 ERR_clear_error();
1179             }
1180         }
1181         /* Add EE cert too: it might be self signed */
1182         if (!X509_STORE_add_cert(chain_store, cpk->x509)) {
1183             error = ERR_peek_last_error();
1184             if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
1185                 ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
1186                 goto err;
1187             ERR_clear_error();
1188         }
1189     } else {
1190         if (c->chain_store)
1191             chain_store = c->chain_store;
1192 
1193         if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
1194             untrusted = cpk->chain;
1195     }
1196 
1197     if (!X509_STORE_CTX_init(&xs_ctx, chain_store, cpk->x509, untrusted)) {
1198         SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
1199         goto err;
1200     }
1201     /* Set suite B flags if needed */
1202     X509_STORE_CTX_set_flags(&xs_ctx,
1203                              c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
1204 
1205     i = X509_verify_cert(&xs_ctx);
1206     if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
1207         if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
1208             ERR_clear_error();
1209         i = 1;
1210         rv = 2;
1211     }
1212     if (i > 0)
1213         chain = X509_STORE_CTX_get1_chain(&xs_ctx);
1214     if (i <= 0) {
1215         SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
1216         i = X509_STORE_CTX_get_error(&xs_ctx);
1217         ERR_add_error_data(2, "Verify error:",
1218                            X509_verify_cert_error_string(i));
1219 
1220         X509_STORE_CTX_cleanup(&xs_ctx);
1221         goto err;
1222     }
1223     X509_STORE_CTX_cleanup(&xs_ctx);
1224     if (cpk->chain)
1225         sk_X509_pop_free(cpk->chain, X509_free);
1226     /* Remove EE certificate from chain */
1227     x = sk_X509_shift(chain);
1228     X509_free(x);
1229     if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
1230         if (sk_X509_num(chain) > 0) {
1231             /* See if last cert is self signed */
1232             x = sk_X509_value(chain, sk_X509_num(chain) - 1);
1233             X509_check_purpose(x, -1, 0);
1234             if (x->ex_flags & EXFLAG_SS) {
1235                 x = sk_X509_pop(chain);
1236                 X509_free(x);
1237             }
1238         }
1239     }
1240     cpk->chain = chain;
1241     if (rv == 0)
1242         rv = 1;
1243  err:
1244     if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
1245         X509_STORE_free(chain_store);
1246 
1247     return rv;
1248 }
1249 
ssl_cert_set_cert_store(CERT * c,X509_STORE * store,int chain,int ref)1250 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
1251 {
1252     X509_STORE **pstore;
1253     if (chain)
1254         pstore = &c->chain_store;
1255     else
1256         pstore = &c->verify_store;
1257     if (*pstore)
1258         X509_STORE_free(*pstore);
1259     *pstore = store;
1260     if (ref && store)
1261         CRYPTO_add(&store->references, 1, CRYPTO_LOCK_X509_STORE);
1262     return 1;
1263 }
1264