1 /* $OpenBSD: ssl_cert.c,v 1.78 2020/06/05 17:55:24 jsing Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
57 */
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
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
71 * distribution.
72 *
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/)"
77 *
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.
82 *
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.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
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 * ====================================================================
105 *
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).
109 *
110 */
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.
115 */
116
117 #include <sys/types.h>
118
119 #include <dirent.h>
120 #include <stdio.h>
121 #include <unistd.h>
122
123 #include <openssl/bio.h>
124 #include <openssl/bn.h>
125 #include <openssl/dh.h>
126 #include <openssl/objects.h>
127 #include <openssl/opensslconf.h>
128 #include <openssl/pem.h>
129 #include <openssl/x509v3.h>
130
131 #include "ssl_locl.h"
132
133 int
SSL_get_ex_data_X509_STORE_CTX_idx(void)134 SSL_get_ex_data_X509_STORE_CTX_idx(void)
135 {
136 static volatile int ssl_x509_store_ctx_idx = -1;
137 int got_write_lock = 0;
138
139 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
140
141 if (ssl_x509_store_ctx_idx < 0) {
142 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
143 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
144 got_write_lock = 1;
145
146 if (ssl_x509_store_ctx_idx < 0) {
147 ssl_x509_store_ctx_idx =
148 X509_STORE_CTX_get_ex_new_index(
149 0, "SSL for verify callback", NULL, NULL, NULL);
150 }
151 }
152
153 if (got_write_lock)
154 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
155 else
156 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
157
158 return ssl_x509_store_ctx_idx;
159 }
160
161 CERT *
ssl_cert_new(void)162 ssl_cert_new(void)
163 {
164 CERT *ret;
165
166 ret = calloc(1, sizeof(CERT));
167 if (ret == NULL) {
168 SSLerrorx(ERR_R_MALLOC_FAILURE);
169 return (NULL);
170 }
171 ret->key = &(ret->pkeys[SSL_PKEY_RSA]);
172 ret->references = 1;
173 return (ret);
174 }
175
176 CERT *
ssl_cert_dup(CERT * cert)177 ssl_cert_dup(CERT *cert)
178 {
179 CERT *ret;
180 int i;
181
182 ret = calloc(1, sizeof(CERT));
183 if (ret == NULL) {
184 SSLerrorx(ERR_R_MALLOC_FAILURE);
185 return (NULL);
186 }
187
188 /*
189 * same as ret->key = ret->pkeys + (cert->key - cert->pkeys),
190 * if you find that more readable
191 */
192 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]];
193
194 ret->valid = cert->valid;
195 ret->mask_k = cert->mask_k;
196 ret->mask_a = cert->mask_a;
197
198 if (cert->dh_tmp != NULL) {
199 ret->dh_tmp = DHparams_dup(cert->dh_tmp);
200 if (ret->dh_tmp == NULL) {
201 SSLerrorx(ERR_R_DH_LIB);
202 goto err;
203 }
204 if (cert->dh_tmp->priv_key) {
205 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key);
206 if (!b) {
207 SSLerrorx(ERR_R_BN_LIB);
208 goto err;
209 }
210 ret->dh_tmp->priv_key = b;
211 }
212 if (cert->dh_tmp->pub_key) {
213 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key);
214 if (!b) {
215 SSLerrorx(ERR_R_BN_LIB);
216 goto err;
217 }
218 ret->dh_tmp->pub_key = b;
219 }
220 }
221 ret->dh_tmp_cb = cert->dh_tmp_cb;
222 ret->dh_tmp_auto = cert->dh_tmp_auto;
223
224 for (i = 0; i < SSL_PKEY_NUM; i++) {
225 if (cert->pkeys[i].x509 != NULL) {
226 ret->pkeys[i].x509 = cert->pkeys[i].x509;
227 CRYPTO_add(&ret->pkeys[i].x509->references, 1,
228 CRYPTO_LOCK_X509);
229 }
230
231 if (cert->pkeys[i].privatekey != NULL) {
232 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey;
233 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1,
234 CRYPTO_LOCK_EVP_PKEY);
235
236 switch (i) {
237 /*
238 * If there was anything special to do for
239 * certain types of keys, we'd do it here.
240 * (Nothing at the moment, I think.)
241 */
242
243 case SSL_PKEY_RSA:
244 /* We have an RSA key. */
245 break;
246
247 case SSL_PKEY_ECC:
248 /* We have an ECC key */
249 break;
250
251 case SSL_PKEY_GOST01:
252 /* We have a GOST key */
253 break;
254
255 default:
256 /* Can't happen. */
257 SSLerrorx(SSL_R_LIBRARY_BUG);
258 }
259 }
260
261 if (cert->pkeys[i].chain != NULL) {
262 if ((ret->pkeys[i].chain =
263 X509_chain_up_ref(cert->pkeys[i].chain)) == NULL)
264 goto err;
265 }
266 }
267
268 /*
269 * ret->extra_certs *should* exist, but currently the own certificate
270 * chain is held inside SSL_CTX
271 */
272
273 ret->references = 1;
274
275 return (ret);
276
277 err:
278 DH_free(ret->dh_tmp);
279
280 for (i = 0; i < SSL_PKEY_NUM; i++) {
281 X509_free(ret->pkeys[i].x509);
282 EVP_PKEY_free(ret->pkeys[i].privatekey);
283 sk_X509_pop_free(ret->pkeys[i].chain, X509_free);
284 }
285 free (ret);
286 return NULL;
287 }
288
289
290 void
ssl_cert_free(CERT * c)291 ssl_cert_free(CERT *c)
292 {
293 int i;
294
295 if (c == NULL)
296 return;
297
298 i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT);
299 if (i > 0)
300 return;
301
302 DH_free(c->dh_tmp);
303
304 for (i = 0; i < SSL_PKEY_NUM; i++) {
305 X509_free(c->pkeys[i].x509);
306 EVP_PKEY_free(c->pkeys[i].privatekey);
307 sk_X509_pop_free(c->pkeys[i].chain, X509_free);
308 }
309
310 free(c);
311 }
312
313 int
ssl_cert_set0_chain(CERT * c,STACK_OF (X509)* chain)314 ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain)
315 {
316 if (c->key == NULL)
317 return 0;
318
319 sk_X509_pop_free(c->key->chain, X509_free);
320 c->key->chain = chain;
321
322 return 1;
323 }
324
325 int
ssl_cert_set1_chain(CERT * c,STACK_OF (X509)* chain)326 ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain)
327 {
328 STACK_OF(X509) *new_chain = NULL;
329
330 if (chain != NULL) {
331 if ((new_chain = X509_chain_up_ref(chain)) == NULL)
332 return 0;
333 }
334 if (!ssl_cert_set0_chain(c, new_chain)) {
335 sk_X509_pop_free(new_chain, X509_free);
336 return 0;
337 }
338
339 return 1;
340 }
341
342 int
ssl_cert_add0_chain_cert(CERT * c,X509 * cert)343 ssl_cert_add0_chain_cert(CERT *c, X509 *cert)
344 {
345 if (c->key == NULL)
346 return 0;
347
348 if (c->key->chain == NULL) {
349 if ((c->key->chain = sk_X509_new_null()) == NULL)
350 return 0;
351 }
352 if (!sk_X509_push(c->key->chain, cert))
353 return 0;
354
355 return 1;
356 }
357
358 int
ssl_cert_add1_chain_cert(CERT * c,X509 * cert)359 ssl_cert_add1_chain_cert(CERT *c, X509 *cert)
360 {
361 if (!ssl_cert_add0_chain_cert(c, cert))
362 return 0;
363
364 X509_up_ref(cert);
365
366 return 1;
367 }
368
369 SESS_CERT *
ssl_sess_cert_new(void)370 ssl_sess_cert_new(void)
371 {
372 SESS_CERT *ret;
373
374 ret = calloc(1, sizeof *ret);
375 if (ret == NULL) {
376 SSLerrorx(ERR_R_MALLOC_FAILURE);
377 return NULL;
378 }
379 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA]);
380 ret->references = 1;
381
382 return ret;
383 }
384
385 void
ssl_sess_cert_free(SESS_CERT * sc)386 ssl_sess_cert_free(SESS_CERT *sc)
387 {
388 int i;
389
390 if (sc == NULL)
391 return;
392
393 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT);
394 if (i > 0)
395 return;
396
397 sk_X509_pop_free(sc->cert_chain, X509_free);
398 for (i = 0; i < SSL_PKEY_NUM; i++)
399 X509_free(sc->peer_pkeys[i].x509);
400
401 DH_free(sc->peer_dh_tmp);
402 EC_KEY_free(sc->peer_ecdh_tmp);
403 free(sc->peer_x25519_tmp);
404
405 free(sc);
406 }
407
408 int
ssl_verify_cert_chain(SSL * s,STACK_OF (X509)* sk)409 ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
410 {
411 X509_STORE_CTX ctx;
412 X509 *x;
413 int ret;
414
415 if ((sk == NULL) || (sk_X509_num(sk) == 0))
416 return (0);
417
418 x = sk_X509_value(sk, 0);
419 if (!X509_STORE_CTX_init(&ctx, s->ctx->cert_store, x, sk)) {
420 SSLerror(s, ERR_R_X509_LIB);
421 return (0);
422 }
423 X509_STORE_CTX_set_ex_data(&ctx,
424 SSL_get_ex_data_X509_STORE_CTX_idx(), s);
425
426 /*
427 * We need to inherit the verify parameters. These can be
428 * determined by the context: if its a server it will verify
429 * SSL client certificates or vice versa.
430 */
431 X509_STORE_CTX_set_default(&ctx,
432 s->server ? "ssl_client" : "ssl_server");
433
434 /*
435 * Anything non-default in "param" should overwrite anything
436 * in the ctx.
437 */
438 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param);
439
440 if (s->internal->verify_callback)
441 X509_STORE_CTX_set_verify_cb(&ctx, s->internal->verify_callback);
442
443 if (s->ctx->internal->app_verify_callback != NULL)
444 ret = s->ctx->internal->app_verify_callback(&ctx,
445 s->ctx->internal->app_verify_arg);
446 else
447 ret = X509_verify_cert(&ctx);
448
449 s->verify_result = ctx.error;
450 X509_STORE_CTX_cleanup(&ctx);
451
452 return (ret);
453 }
454
455 static void
set_client_CA_list(STACK_OF (X509_NAME)** ca_list,STACK_OF (X509_NAME)* name_list)456 set_client_CA_list(STACK_OF(X509_NAME) **ca_list,
457 STACK_OF(X509_NAME) *name_list)
458 {
459 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
460 *ca_list = name_list;
461 }
462
STACK_OF(X509_NAME)463 STACK_OF(X509_NAME) *
464 SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk)
465 {
466 int i;
467 STACK_OF(X509_NAME) *ret;
468 X509_NAME *name = NULL;
469
470 if ((ret = sk_X509_NAME_new_null()) == NULL)
471 goto err;
472
473 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
474 if ((name = X509_NAME_dup(sk_X509_NAME_value(sk, i))) == NULL)
475 goto err;
476 if (!sk_X509_NAME_push(ret, name))
477 goto err;
478 }
479 return (ret);
480
481 err:
482 X509_NAME_free(name);
483 sk_X509_NAME_pop_free(ret, X509_NAME_free);
484 return NULL;
485 }
486
487 void
SSL_set_client_CA_list(SSL * s,STACK_OF (X509_NAME)* name_list)488 SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
489 {
490 set_client_CA_list(&(s->internal->client_CA), name_list);
491 }
492
493 void
SSL_CTX_set_client_CA_list(SSL_CTX * ctx,STACK_OF (X509_NAME)* name_list)494 SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
495 {
496 set_client_CA_list(&(ctx->internal->client_CA), name_list);
497 }
498
STACK_OF(X509_NAME)499 STACK_OF(X509_NAME) *
500 SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
501 {
502 return (ctx->internal->client_CA);
503 }
504
STACK_OF(X509_NAME)505 STACK_OF(X509_NAME) *
506 SSL_get_client_CA_list(const SSL *s)
507 {
508 if (s->internal->type == SSL_ST_CONNECT) {
509 /* We are in the client. */
510 if ((s->version >> 8) == SSL3_VERSION_MAJOR)
511 return (S3I(s)->tmp.ca_names);
512 else
513 return (NULL);
514 } else {
515 if (s->internal->client_CA != NULL)
516 return (s->internal->client_CA);
517 else
518 return (s->ctx->internal->client_CA);
519 }
520 }
521
522 static int
add_client_CA(STACK_OF (X509_NAME)** sk,X509 * x)523 add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x)
524 {
525 X509_NAME *name;
526
527 if (x == NULL)
528 return (0);
529 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL))
530 return (0);
531
532 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
533 return (0);
534
535 if (!sk_X509_NAME_push(*sk, name)) {
536 X509_NAME_free(name);
537 return (0);
538 }
539 return (1);
540 }
541
542 int
SSL_add_client_CA(SSL * ssl,X509 * x)543 SSL_add_client_CA(SSL *ssl, X509 *x)
544 {
545 return (add_client_CA(&(ssl->internal->client_CA), x));
546 }
547
548 int
SSL_CTX_add_client_CA(SSL_CTX * ctx,X509 * x)549 SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
550 {
551 return (add_client_CA(&(ctx->internal->client_CA), x));
552 }
553
554 static int
xname_cmp(const X509_NAME * const * a,const X509_NAME * const * b)555 xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
556 {
557 return (X509_NAME_cmp(*a, *b));
558 }
559
560 /*!
561 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
562 * it doesn't really have anything to do with clients (except that a common use
563 * for a stack of CAs is to send it to the client). Actually, it doesn't have
564 * much to do with CAs, either, since it will load any old cert.
565 * \param file the file containing one or more certs.
566 * \return a ::STACK containing the certs.
567 */
STACK_OF(X509_NAME)568 STACK_OF(X509_NAME) *
569 SSL_load_client_CA_file(const char *file)
570 {
571 BIO *in;
572 X509 *x = NULL;
573 X509_NAME *xn = NULL;
574 STACK_OF(X509_NAME) *ret = NULL, *sk;
575
576 sk = sk_X509_NAME_new(xname_cmp);
577
578 in = BIO_new(BIO_s_file_internal());
579
580 if ((sk == NULL) || (in == NULL)) {
581 SSLerrorx(ERR_R_MALLOC_FAILURE);
582 goto err;
583 }
584
585 if (!BIO_read_filename(in, file))
586 goto err;
587
588 for (;;) {
589 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
590 break;
591 if (ret == NULL) {
592 ret = sk_X509_NAME_new_null();
593 if (ret == NULL) {
594 SSLerrorx(ERR_R_MALLOC_FAILURE);
595 goto err;
596 }
597 }
598 if ((xn = X509_get_subject_name(x)) == NULL) goto err;
599 /* check for duplicates */
600 xn = X509_NAME_dup(xn);
601 if (xn == NULL)
602 goto err;
603 if (sk_X509_NAME_find(sk, xn) >= 0)
604 X509_NAME_free(xn);
605 else {
606 sk_X509_NAME_push(sk, xn);
607 sk_X509_NAME_push(ret, xn);
608 }
609 }
610
611 if (0) {
612 err:
613 sk_X509_NAME_pop_free(ret, X509_NAME_free);
614 ret = NULL;
615 }
616 sk_X509_NAME_free(sk);
617 BIO_free(in);
618 X509_free(x);
619 if (ret != NULL)
620 ERR_clear_error();
621
622 return (ret);
623 }
624
625 /*!
626 * Add a file of certs to a stack.
627 * \param stack the stack to add to.
628 * \param file the file to add from. All certs in this file that are not
629 * already in the stack will be added.
630 * \return 1 for success, 0 for failure. Note that in the case of failure some
631 * certs may have been added to \c stack.
632 */
633
634 int
SSL_add_file_cert_subjects_to_stack(STACK_OF (X509_NAME)* stack,const char * file)635 SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
636 const char *file)
637 {
638 BIO *in;
639 X509 *x = NULL;
640 X509_NAME *xn = NULL;
641 int ret = 1;
642 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b);
643
644 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp);
645
646 in = BIO_new(BIO_s_file_internal());
647
648 if (in == NULL) {
649 SSLerrorx(ERR_R_MALLOC_FAILURE);
650 goto err;
651 }
652
653 if (!BIO_read_filename(in, file))
654 goto err;
655
656 for (;;) {
657 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
658 break;
659 if ((xn = X509_get_subject_name(x)) == NULL) goto err;
660 xn = X509_NAME_dup(xn);
661 if (xn == NULL)
662 goto err;
663 if (sk_X509_NAME_find(stack, xn) >= 0)
664 X509_NAME_free(xn);
665 else
666 sk_X509_NAME_push(stack, xn);
667 }
668
669 ERR_clear_error();
670
671 if (0) {
672 err:
673 ret = 0;
674 }
675 BIO_free(in);
676 X509_free(x);
677
678 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
679
680 return ret;
681 }
682
683 /*!
684 * Add a directory of certs to a stack.
685 * \param stack the stack to append to.
686 * \param dir the directory to append from. All files in this directory will be
687 * examined as potential certs. Any that are acceptable to
688 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will
689 * be included.
690 * \return 1 for success, 0 for failure. Note that in the case of failure some
691 * certs may have been added to \c stack.
692 */
693
694 int
SSL_add_dir_cert_subjects_to_stack(STACK_OF (X509_NAME)* stack,const char * dir)695 SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, const char *dir)
696 {
697 DIR *dirp = NULL;
698 char *path = NULL;
699 int ret = 0;
700
701 dirp = opendir(dir);
702 if (dirp) {
703 struct dirent *dp;
704 while ((dp = readdir(dirp)) != NULL) {
705 if (asprintf(&path, "%s/%s", dir, dp->d_name) != -1) {
706 ret = SSL_add_file_cert_subjects_to_stack(
707 stack, path);
708 free(path);
709 }
710 if (!ret)
711 break;
712 }
713 (void) closedir(dirp);
714 }
715 if (!ret) {
716 SYSerror(errno);
717 ERR_asprintf_error_data("opendir ('%s')", dir);
718 SSLerrorx(ERR_R_SYS_LIB);
719 }
720 return ret;
721 }
722