GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libssl/ssl_cert.c Lines: 109 241 45.2 %
Date: 2017-11-13 Branches: 44 136 32.4 %

Line Branch Exec Source
1
/* $OpenBSD: ssl_cert.c,v 1.66 2017/08/12 02:55:22 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
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
4108
	CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
140
141
2054
	if (ssl_x509_store_ctx_idx < 0) {
142
313
		CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
143
313
		CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
144
		got_write_lock = 1;
145
146
313
		if (ssl_x509_store_ctx_idx < 0) {
147
313
			ssl_x509_store_ctx_idx =
148
313
			    X509_STORE_CTX_get_ex_new_index(
149
				0, "SSL for verify callback", NULL, NULL, NULL);
150
313
		}
151
	}
152
153
2054
	if (got_write_lock)
154
313
		CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
155
	else
156
1741
		CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
157
158
2054
	return ssl_x509_store_ctx_idx;
159
}
160
161
static void
162
ssl_cert_set_default_md(CERT *cert)
163
{
164
	/* Set digest values to defaults */
165
4958
	cert->pkeys[SSL_PKEY_RSA_SIGN].digest = EVP_sha1();
166
2479
	cert->pkeys[SSL_PKEY_RSA_ENC].digest = EVP_sha1();
167
2479
	cert->pkeys[SSL_PKEY_ECC].digest = EVP_sha1();
168
#ifndef OPENSSL_NO_GOST
169
2479
	cert->pkeys[SSL_PKEY_GOST01].digest = EVP_gostr341194();
170
#endif
171
2479
}
172
173
CERT *
174
ssl_cert_new(void)
175
{
176
	CERT *ret;
177
178
1526
	ret = calloc(1, sizeof(CERT));
179
763
	if (ret == NULL) {
180
		SSLerrorx(ERR_R_MALLOC_FAILURE);
181
		return (NULL);
182
	}
183
763
	ret->key = &(ret->pkeys[SSL_PKEY_RSA_ENC]);
184
763
	ret->references = 1;
185
763
	ssl_cert_set_default_md(ret);
186
763
	return (ret);
187
763
}
188
189
CERT *
190
ssl_cert_dup(CERT *cert)
191
{
192
	CERT *ret;
193
	int i;
194
195
3432
	ret = calloc(1, sizeof(CERT));
196
1716
	if (ret == NULL) {
197
		SSLerrorx(ERR_R_MALLOC_FAILURE);
198
		return (NULL);
199
	}
200
201
	/*
202
	 * same as ret->key = ret->pkeys + (cert->key - cert->pkeys),
203
	 * if you find that more readable
204
	 */
205
1716
	ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]];
206
207
1716
	ret->valid = cert->valid;
208
1716
	ret->mask_k = cert->mask_k;
209
1716
	ret->mask_a = cert->mask_a;
210
211
1716
	if (cert->dh_tmp != NULL) {
212
150
		ret->dh_tmp = DHparams_dup(cert->dh_tmp);
213
150
		if (ret->dh_tmp == NULL) {
214
			SSLerrorx(ERR_R_DH_LIB);
215
			goto err;
216
		}
217
150
		if (cert->dh_tmp->priv_key) {
218
			BIGNUM *b = BN_dup(cert->dh_tmp->priv_key);
219
			if (!b) {
220
				SSLerrorx(ERR_R_BN_LIB);
221
				goto err;
222
			}
223
			ret->dh_tmp->priv_key = b;
224
		}
225
150
		if (cert->dh_tmp->pub_key) {
226
			BIGNUM *b = BN_dup(cert->dh_tmp->pub_key);
227
			if (!b) {
228
				SSLerrorx(ERR_R_BN_LIB);
229
				goto err;
230
			}
231
			ret->dh_tmp->pub_key = b;
232
		}
233
	}
234
1716
	ret->dh_tmp_cb = cert->dh_tmp_cb;
235
1716
	ret->dh_tmp_auto = cert->dh_tmp_auto;
236
237
1716
	if (cert->ecdh_tmp) {
238
		ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp);
239
		if (ret->ecdh_tmp == NULL) {
240
			SSLerrorx(ERR_R_EC_LIB);
241
			goto err;
242
		}
243
	}
244
245
20592
	for (i = 0; i < SSL_PKEY_NUM; i++) {
246
8580
		if (cert->pkeys[i].x509 != NULL) {
247
192
			ret->pkeys[i].x509 = cert->pkeys[i].x509;
248
192
			CRYPTO_add(&ret->pkeys[i].x509->references, 1,
249
			CRYPTO_LOCK_X509);
250
192
		}
251
252
8580
		if (cert->pkeys[i].privatekey != NULL) {
253
192
			ret->pkeys[i].privatekey = cert->pkeys[i].privatekey;
254
192
			CRYPTO_add(&ret->pkeys[i].privatekey->references, 1,
255
			CRYPTO_LOCK_EVP_PKEY);
256
257
192
			switch (i) {
258
				/*
259
				 * If there was anything special to do for
260
				 * certain types of keys, we'd do it here.
261
				 * (Nothing at the moment, I think.)
262
				 */
263
264
			case SSL_PKEY_RSA_ENC:
265
			case SSL_PKEY_RSA_SIGN:
266
				/* We have an RSA key. */
267
				break;
268
269
			case SSL_PKEY_DH_RSA:
270
				/* We have a DH key. */
271
				break;
272
273
			case SSL_PKEY_ECC:
274
				/* We have an ECC key */
275
				break;
276
277
			default:
278
				/* Can't happen. */
279
				SSLerrorx(SSL_R_LIBRARY_BUG);
280
			}
281
		}
282
	}
283
284
	/*
285
	 * ret->extra_certs *should* exist, but currently the own certificate
286
	 * chain is held inside SSL_CTX
287
	 */
288
289
1716
	ret->references = 1;
290
	/*
291
	 * Set digests to defaults. NB: we don't copy existing values
292
	 * as they will be set during handshake.
293
	 */
294
1716
	ssl_cert_set_default_md(ret);
295
296
1716
	return (ret);
297
298
err:
299
	DH_free(ret->dh_tmp);
300
	EC_KEY_free(ret->ecdh_tmp);
301
302
	for (i = 0; i < SSL_PKEY_NUM; i++) {
303
		X509_free(ret->pkeys[i].x509);
304
		EVP_PKEY_free(ret->pkeys[i].privatekey);
305
	}
306
	free (ret);
307
	return NULL;
308
1716
}
309
310
311
void
312
ssl_cert_free(CERT *c)
313
{
314
	int i;
315
316
4874
	if (c == NULL)
317
		return;
318
319
2437
	i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT);
320
2437
	if (i > 0)
321
		return;
322
323
2437
	DH_free(c->dh_tmp);
324
2437
	EC_KEY_free(c->ecdh_tmp);
325
326
29244
	for (i = 0; i < SSL_PKEY_NUM; i++) {
327
12185
		X509_free(c->pkeys[i].x509);
328
12185
		EVP_PKEY_free(c->pkeys[i].privatekey);
329
	}
330
331
2437
	free(c);
332
4874
}
333
334
int
335
ssl_cert_inst(CERT **o)
336
{
337
	/*
338
	 * Create a CERT if there isn't already one
339
	 * (which cannot really happen, as it is initially created in
340
	 * SSL_CTX_new; but the earlier code usually allows for that one
341
	 * being non-existant, so we follow that behaviour, as it might
342
	 * turn out that there actually is a reason for it -- but I'm
343
	 * not sure that *all* of the existing code could cope with
344
	 * s->cert being NULL, otherwise we could do without the
345
	 * initialization in SSL_CTX_new).
346
	 */
347
348
1176
	if (o == NULL) {
349
		SSLerrorx(ERR_R_PASSED_NULL_PARAMETER);
350
		return (0);
351
	}
352
588
	if (*o == NULL) {
353
		if ((*o = ssl_cert_new()) == NULL) {
354
			SSLerrorx(ERR_R_MALLOC_FAILURE);
355
			return (0);
356
		}
357
	}
358
588
	return (1);
359
588
}
360
361
362
SESS_CERT *
363
ssl_sess_cert_new(void)
364
{
365
	SESS_CERT *ret;
366
367
2642
	ret = calloc(1, sizeof *ret);
368
1321
	if (ret == NULL) {
369
		SSLerrorx(ERR_R_MALLOC_FAILURE);
370
		return NULL;
371
	}
372
1321
	ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]);
373
1321
	ret->references = 1;
374
375
1321
	return ret;
376
1321
}
377
378
void
379
ssl_sess_cert_free(SESS_CERT *sc)
380
{
381
	int i;
382
383
6068
	if (sc == NULL)
384
1713
		return;
385
386
1321
	i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT);
387
1321
	if (i > 0)
388
		return;
389
390
1321
	sk_X509_pop_free(sc->cert_chain, X509_free);
391
15852
	for (i = 0; i < SSL_PKEY_NUM; i++)
392
6605
		X509_free(sc->peer_pkeys[i].x509);
393
394
1321
	DH_free(sc->peer_dh_tmp);
395
1321
	EC_KEY_free(sc->peer_ecdh_tmp);
396
1321
	free(sc->peer_x25519_tmp);
397
398
1321
	free(sc);
399
4355
}
400
401
int
402
ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
403
{
404
2582
	X509_STORE_CTX ctx;
405
	X509 *x;
406
	int ret;
407
408

2582
	if ((sk == NULL) || (sk_X509_num(sk) == 0))
409
		return (0);
410
411
1291
	x = sk_X509_value(sk, 0);
412
1291
	if (!X509_STORE_CTX_init(&ctx, s->ctx->cert_store, x, sk)) {
413
		SSLerror(s, ERR_R_X509_LIB);
414
		return (0);
415
	}
416
1291
	X509_STORE_CTX_set_ex_data(&ctx,
417
1291
	    SSL_get_ex_data_X509_STORE_CTX_idx(), s);
418
419
	/*
420
	 * We need to inherit the verify parameters. These can be
421
	 * determined by the context: if its a server it will verify
422
	 * SSL client certificates or vice versa.
423
	 */
424
1291
	X509_STORE_CTX_set_default(&ctx,
425
1291
	    s->server ? "ssl_client" : "ssl_server");
426
427
	/*
428
	 * Anything non-default in "param" should overwrite anything
429
	 * in the ctx.
430
	 */
431
1291
	X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param);
432
433
1291
	if (s->internal->verify_callback)
434
44
		X509_STORE_CTX_set_verify_cb(&ctx, s->internal->verify_callback);
435
436
1291
	if (s->ctx->internal->app_verify_callback != NULL)
437
54
		ret = s->ctx->internal->app_verify_callback(&ctx,
438
54
		    s->ctx->internal->app_verify_arg);
439
	else
440
1237
		ret = X509_verify_cert(&ctx);
441
442
1291
	s->verify_result = ctx.error;
443
1291
	X509_STORE_CTX_cleanup(&ctx);
444
445
1291
	return (ret);
446
1291
}
447
448
static void
449
set_client_CA_list(STACK_OF(X509_NAME) **ca_list,
450
    STACK_OF(X509_NAME) *name_list)
451
{
452
	sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
453
	*ca_list = name_list;
454
}
455
456
STACK_OF(X509_NAME) *
457
SSL_dup_CA_list(STACK_OF(X509_NAME) *sk)
458
{
459
	int i;
460
	STACK_OF(X509_NAME) *ret;
461
	X509_NAME *name;
462
463
	ret = sk_X509_NAME_new_null();
464
	for (i = 0; i < sk_X509_NAME_num(sk); i++) {
465
		name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
466
		if ((name == NULL) || !sk_X509_NAME_push(ret, name)) {
467
			sk_X509_NAME_pop_free(ret, X509_NAME_free);
468
			return (NULL);
469
		}
470
	}
471
	return (ret);
472
}
473
474
void
475
SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
476
{
477
	set_client_CA_list(&(s->internal->client_CA), name_list);
478
}
479
480
void
481
SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
482
{
483
	set_client_CA_list(&(ctx->internal->client_CA), name_list);
484
}
485
486
STACK_OF(X509_NAME) *
487
SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
488
{
489
	return (ctx->internal->client_CA);
490
}
491
492
STACK_OF(X509_NAME) *
493
SSL_get_client_CA_list(const SSL *s)
494
{
495
50
	if (s->internal->type == SSL_ST_CONNECT) {
496
		/* We are in the client. */
497

8
		if (((s->version >> 8) == SSL3_VERSION_MAJOR) &&
498
4
		    (s->s3 != NULL))
499
4
			return (S3I(s)->tmp.ca_names);
500
		else
501
			return (NULL);
502
	} else {
503
21
		if (s->internal->client_CA != NULL)
504
			return (s->internal->client_CA);
505
		else
506
21
			return (s->ctx->internal->client_CA);
507
	}
508
25
}
509
510
static int
511
add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x)
512
{
513
	X509_NAME *name;
514
515
	if (x == NULL)
516
		return (0);
517
	if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL))
518
		return (0);
519
520
	if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
521
		return (0);
522
523
	if (!sk_X509_NAME_push(*sk, name)) {
524
		X509_NAME_free(name);
525
		return (0);
526
	}
527
	return (1);
528
}
529
530
int
531
SSL_add_client_CA(SSL *ssl, X509 *x)
532
{
533
	return (add_client_CA(&(ssl->internal->client_CA), x));
534
}
535
536
int
537
SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
538
{
539
	return (add_client_CA(&(ctx->internal->client_CA), x));
540
}
541
542
static int
543
xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
544
{
545
	return (X509_NAME_cmp(*a, *b));
546
}
547
548
/*!
549
 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
550
 * it doesn't really have anything to do with clients (except that a common use
551
 * for a stack of CAs is to send it to the client). Actually, it doesn't have
552
 * much to do with CAs, either, since it will load any old cert.
553
 * \param file the file containing one or more certs.
554
 * \return a ::STACK containing the certs.
555
 */
556
STACK_OF(X509_NAME) *
557
SSL_load_client_CA_file(const char *file)
558
{
559
	BIO *in;
560
	X509 *x = NULL;
561
	X509_NAME *xn = NULL;
562
	STACK_OF(X509_NAME) *ret = NULL, *sk;
563
564
	sk = sk_X509_NAME_new(xname_cmp);
565
566
	in = BIO_new(BIO_s_file_internal());
567
568
	if ((sk == NULL) || (in == NULL)) {
569
		SSLerrorx(ERR_R_MALLOC_FAILURE);
570
		goto err;
571
	}
572
573
	if (!BIO_read_filename(in, file))
574
		goto err;
575
576
	for (;;) {
577
		if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
578
			break;
579
		if (ret == NULL) {
580
			ret = sk_X509_NAME_new_null();
581
			if (ret == NULL) {
582
				SSLerrorx(ERR_R_MALLOC_FAILURE);
583
				goto err;
584
			}
585
		}
586
		if ((xn = X509_get_subject_name(x)) == NULL) goto err;
587
			/* check for duplicates */
588
		xn = X509_NAME_dup(xn);
589
		if (xn == NULL)
590
			goto err;
591
		if (sk_X509_NAME_find(sk, xn) >= 0)
592
			X509_NAME_free(xn);
593
		else {
594
			sk_X509_NAME_push(sk, xn);
595
			sk_X509_NAME_push(ret, xn);
596
		}
597
	}
598
599
	if (0) {
600
err:
601
		sk_X509_NAME_pop_free(ret, X509_NAME_free);
602
		ret = NULL;
603
	}
604
	sk_X509_NAME_free(sk);
605
	BIO_free(in);
606
	X509_free(x);
607
	if (ret != NULL)
608
		ERR_clear_error();
609
610
	return (ret);
611
}
612
613
/*!
614
 * Add a file of certs to a stack.
615
 * \param stack the stack to add to.
616
 * \param file the file to add from. All certs in this file that are not
617
 * already in the stack will be added.
618
 * \return 1 for success, 0 for failure. Note that in the case of failure some
619
 * certs may have been added to \c stack.
620
 */
621
622
int
623
SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
624
    const char *file)
625
{
626
	BIO *in;
627
	X509 *x = NULL;
628
	X509_NAME *xn = NULL;
629
	int ret = 1;
630
	int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b);
631
632
	oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp);
633
634
	in = BIO_new(BIO_s_file_internal());
635
636
	if (in == NULL) {
637
		SSLerrorx(ERR_R_MALLOC_FAILURE);
638
		goto err;
639
	}
640
641
	if (!BIO_read_filename(in, file))
642
		goto err;
643
644
	for (;;) {
645
		if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
646
			break;
647
		if ((xn = X509_get_subject_name(x)) == NULL) goto err;
648
			xn = X509_NAME_dup(xn);
649
		if (xn == NULL)
650
			goto err;
651
		if (sk_X509_NAME_find(stack, xn) >= 0)
652
			X509_NAME_free(xn);
653
		else
654
			sk_X509_NAME_push(stack, xn);
655
	}
656
657
	ERR_clear_error();
658
659
	if (0) {
660
err:
661
		ret = 0;
662
	}
663
	BIO_free(in);
664
	X509_free(x);
665
666
	(void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
667
668
	return ret;
669
}
670
671
/*!
672
 * Add a directory of certs to a stack.
673
 * \param stack the stack to append to.
674
 * \param dir the directory to append from. All files in this directory will be
675
 * examined as potential certs. Any that are acceptable to
676
 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will
677
 * be included.
678
 * \return 1 for success, 0 for failure. Note that in the case of failure some
679
 * certs may have been added to \c stack.
680
 */
681
682
int
683
SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, const char *dir)
684
{
685
	DIR *dirp = NULL;
686
	char *path = NULL;
687
	int ret = 0;
688
689
	dirp = opendir(dir);
690
	if (dirp) {
691
		struct dirent *dp;
692
		while ((dp = readdir(dirp)) != NULL) {
693
			if (asprintf(&path, "%s/%s", dir, dp->d_name) != -1) {
694
				ret = SSL_add_file_cert_subjects_to_stack(
695
				    stack, path);
696
				free(path);
697
			}
698
			if (!ret)
699
				break;
700
		}
701
		(void) closedir(dirp);
702
	}
703
	if (!ret) {
704
 		SYSerror(errno);
705
		ERR_asprintf_error_data("opendir ('%s')", dir);
706
		SSLerrorx(ERR_R_SYS_LIB);
707
	}
708
	return ret;
709
}