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1/*! \file ssl/ssl_cert.c */
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) 1999 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
107#include <stdio.h>
108
109#include "openssl/e_os.h"
110
111#ifndef NO_SYS_TYPES_H
112# include <sys/types.h>
113#endif
114
115#if !defined(WIN32) && !defined(VSM) && !defined(NeXT) && !defined(MAC_OS_pre_X)
116#include <dirent.h>
117#endif
118
119#ifdef NeXT
120#include <sys/dir.h>
121#define dirent direct
122#endif
123
124#include <openssl/objects.h>
125#include <openssl/bio.h>
126#include <openssl/pem.h>
127#include <openssl/x509v3.h>
128#include "ssl_locl.h"
129
130int SSL_get_ex_data_X509_STORE_CTX_idx(void)
131 {
132 static int ssl_x509_store_ctx_idx= -1;
133
134 if (ssl_x509_store_ctx_idx < 0)
135 {
136 ssl_x509_store_ctx_idx=X509_STORE_CTX_get_ex_new_index(
137 0,"SSL for verify callback",NULL,NULL,NULL);
138 }
139 return(ssl_x509_store_ctx_idx);
140 }
141
142CERT *ssl_cert_new(void)
143 {
144 CERT *ret;
145
146 ret=(CERT *)OPENSSL_malloc(sizeof(CERT));
147 if (ret == NULL)
148 {
149 SSLerr(SSL_F_SSL_CERT_NEW,ERR_R_MALLOC_FAILURE);
150 return(NULL);
151 }
152 memset(ret,0,sizeof(CERT));
153
154 ret->key= &(ret->pkeys[SSL_PKEY_RSA_ENC]);
155 ret->references=1;
156
157 return(ret);
158 }
159
160CERT *ssl_cert_dup(CERT *cert)
161 {
162 CERT *ret;
163 int i;
164
165 ret = (CERT *)OPENSSL_malloc(sizeof(CERT));
166 if (ret == NULL)
167 {
168 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
169 return(NULL);
170 }
171
172 memset(ret, 0, sizeof(CERT));
173
174 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]];
175 /* or ret->key = ret->pkeys + (cert->key - cert->pkeys),
176 * if you find that more readable */
177
178 ret->valid = cert->valid;
179 ret->mask = cert->mask;
180 ret->export_mask = cert->export_mask;
181
182#ifndef NO_RSA
183 if (cert->rsa_tmp != NULL)
184 {
185 ret->rsa_tmp = cert->rsa_tmp;
186 CRYPTO_add(&ret->rsa_tmp->references, 1, CRYPTO_LOCK_RSA);
187 }
188 ret->rsa_tmp_cb = cert->rsa_tmp_cb;
189#endif
190
191#ifndef NO_DH
192 if (cert->dh_tmp != NULL)
193 {
194 /* DH parameters don't have a reference count */
195 ret->dh_tmp = DHparams_dup(cert->dh_tmp);
196 if (ret->dh_tmp == NULL)
197 {
198 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB);
199 goto err;
200 }
201 if (cert->dh_tmp->priv_key)
202 {
203 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key);
204 if (!b)
205 {
206 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
207 goto err;
208 }
209 ret->dh_tmp->priv_key = b;
210 }
211 if (cert->dh_tmp->pub_key)
212 {
213 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key);
214 if (!b)
215 {
216 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
217 goto err;
218 }
219 ret->dh_tmp->pub_key = b;
220 }
221 }
222 ret->dh_tmp_cb = cert->dh_tmp_cb;
223#endif
224
225 for (i = 0; i < SSL_PKEY_NUM; i++)
226 {
227 if (cert->pkeys[i].x509 != NULL)
228 {
229 ret->pkeys[i].x509 = cert->pkeys[i].x509;
230 CRYPTO_add(&ret->pkeys[i].x509->references, 1,
231 CRYPTO_LOCK_X509);
232 }
233
234 if (cert->pkeys[i].privatekey != NULL)
235 {
236 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey;
237 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1,
238 CRYPTO_LOCK_EVP_PKEY);
239
240 switch(i)
241 {
242 /* If there was anything special to do for
243 * certain types of keys, we'd do it here.
244 * (Nothing at the moment, I think.) */
245
246 case SSL_PKEY_RSA_ENC:
247 case SSL_PKEY_RSA_SIGN:
248 /* We have an RSA key. */
249 break;
250
251 case SSL_PKEY_DSA_SIGN:
252 /* We have a DSA key. */
253 break;
254
255 case SSL_PKEY_DH_RSA:
256 case SSL_PKEY_DH_DSA:
257 /* We have a DH key. */
258 break;
259
260 default:
261 /* Can't happen. */
262 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG);
263 }
264 }
265 }
266
267 /* ret->extra_certs *should* exist, but currently the own certificate
268 * chain is held inside SSL_CTX */
269
270 ret->references=1;
271
272 return(ret);
273
274#ifndef NO_DH /* avoid 'unreferenced label' warning if NO_DH is defined */
275err:
276#endif
277#ifndef NO_RSA
278 if (ret->rsa_tmp != NULL)
279 RSA_free(ret->rsa_tmp);
280#endif
281#ifndef NO_DH
282 if (ret->dh_tmp != NULL)
283 DH_free(ret->dh_tmp);
284#endif
285
286 for (i = 0; i < SSL_PKEY_NUM; i++)
287 {
288 if (ret->pkeys[i].x509 != NULL)
289 X509_free(ret->pkeys[i].x509);
290 if (ret->pkeys[i].privatekey != NULL)
291 EVP_PKEY_free(ret->pkeys[i].privatekey);
292 }
293
294 return NULL;
295 }
296
297
298void ssl_cert_free(CERT *c)
299 {
300 int i;
301
302 if(c == NULL)
303 return;
304
305 i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT);
306#ifdef REF_PRINT
307 REF_PRINT("CERT",c);
308#endif
309 if (i > 0) return;
310#ifdef REF_CHECK
311 if (i < 0)
312 {
313 fprintf(stderr,"ssl_cert_free, bad reference count\n");
314 abort(); /* ok */
315 }
316#endif
317
318#ifndef NO_RSA
319 if (c->rsa_tmp) RSA_free(c->rsa_tmp);
320#endif
321#ifndef NO_DH
322 if (c->dh_tmp) DH_free(c->dh_tmp);
323#endif
324
325 for (i=0; i<SSL_PKEY_NUM; i++)
326 {
327 if (c->pkeys[i].x509 != NULL)
328 X509_free(c->pkeys[i].x509);
329 if (c->pkeys[i].privatekey != NULL)
330 EVP_PKEY_free(c->pkeys[i].privatekey);
331#if 0
332 if (c->pkeys[i].publickey != NULL)
333 EVP_PKEY_free(c->pkeys[i].publickey);
334#endif
335 }
336 OPENSSL_free(c);
337 }
338
339int ssl_cert_inst(CERT **o)
340 {
341 /* Create a CERT if there isn't already one
342 * (which cannot really happen, as it is initially created in
343 * SSL_CTX_new; but the earlier code usually allows for that one
344 * being non-existant, so we follow that behaviour, as it might
345 * turn out that there actually is a reason for it -- but I'm
346 * not sure that *all* of the existing code could cope with
347 * s->cert being NULL, otherwise we could do without the
348 * initialization in SSL_CTX_new).
349 */
350
351 if (o == NULL)
352 {
353 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER);
354 return(0);
355 }
356 if (*o == NULL)
357 {
358 if ((*o = ssl_cert_new()) == NULL)
359 {
360 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE);
361 return(0);
362 }
363 }
364 return(1);
365 }
366
367
368SESS_CERT *ssl_sess_cert_new(void)
369 {
370 SESS_CERT *ret;
371
372 ret = OPENSSL_malloc(sizeof *ret);
373 if (ret == NULL)
374 {
375 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE);
376 return NULL;
377 }
378
379 memset(ret, 0 ,sizeof *ret);
380 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]);
381 ret->references = 1;
382
383 return ret;
384 }
385
386void 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#ifdef REF_PRINT
395 REF_PRINT("SESS_CERT", sc);
396#endif
397 if (i > 0)
398 return;
399#ifdef REF_CHECK
400 if (i < 0)
401 {
402 fprintf(stderr,"ssl_sess_cert_free, bad reference count\n");
403 abort(); /* ok */
404 }
405#endif
406
407 /* i == 0 */
408 if (sc->cert_chain != NULL)
409 sk_X509_pop_free(sc->cert_chain, X509_free);
410 for (i = 0; i < SSL_PKEY_NUM; i++)
411 {
412 if (sc->peer_pkeys[i].x509 != NULL)
413 X509_free(sc->peer_pkeys[i].x509);
414#if 0 /* We don't have the peer's private key. These lines are just
415 * here as a reminder that we're still using a not-quite-appropriate
416 * data structure. */
417 if (sc->peer_pkeys[i].privatekey != NULL)
418 EVP_PKEY_free(sc->peer_pkeys[i].privatekey);
419#endif
420 }
421
422#ifndef NO_RSA
423 if (sc->peer_rsa_tmp != NULL)
424 RSA_free(sc->peer_rsa_tmp);
425#endif
426#ifndef NO_DH
427 if (sc->peer_dh_tmp != NULL)
428 DH_free(sc->peer_dh_tmp);
429#endif
430
431 OPENSSL_free(sc);
432 }
433
434int ssl_set_peer_cert_type(SESS_CERT *sc,int type)
435 {
436 sc->peer_cert_type = type;
437 return(1);
438 }
439
440int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk)
441 {
442 X509 *x;
443 int i;
444 X509_STORE_CTX ctx;
445
446 if ((sk == NULL) || (sk_X509_num(sk) == 0))
447 return(0);
448
449 x=sk_X509_value(sk,0);
450 X509_STORE_CTX_init(&ctx,s->ctx->cert_store,x,sk);
451 if (SSL_get_verify_depth(s) >= 0)
452 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s));
453 X509_STORE_CTX_set_ex_data(&ctx,SSL_get_ex_data_X509_STORE_CTX_idx(),s);
454 /* We need to set the verify purpose. The purpose can be determined by
455 * the context: if its a server it will verify SSL client certificates
456 * or vice versa.
457 */
458
459 if(s->server) i = X509_PURPOSE_SSL_CLIENT;
460 else i = X509_PURPOSE_SSL_SERVER;
461
462 X509_STORE_CTX_purpose_inherit(&ctx, i, s->purpose, s->trust);
463
464 if (s->ctx->app_verify_callback != NULL)
465 i=s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */
466 else
467 {
468#ifndef NO_X509_VERIFY
469 i=X509_verify_cert(&ctx);
470#else
471 i=0;
472 ctx.error=X509_V_ERR_APPLICATION_VERIFICATION;
473 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_NO_VERIFY_CALLBACK);
474#endif
475 }
476
477 s->verify_result=ctx.error;
478 X509_STORE_CTX_cleanup(&ctx);
479
480 return(i);
481 }
482
483static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,STACK_OF(X509_NAME) *list)
484 {
485 if (*ca_list != NULL)
486 sk_X509_NAME_pop_free(*ca_list,X509_NAME_free);
487
488 *ca_list=list;
489 }
490
491STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk)
492 {
493 int i;
494 STACK_OF(X509_NAME) *ret;
495 X509_NAME *name;
496
497 ret=sk_X509_NAME_new_null();
498 for (i=0; i<sk_X509_NAME_num(sk); i++)
499 {
500 name=X509_NAME_dup(sk_X509_NAME_value(sk,i));
501 if ((name == NULL) || !sk_X509_NAME_push(ret,name))
502 {
503 sk_X509_NAME_pop_free(ret,X509_NAME_free);
504 return(NULL);
505 }
506 }
507 return(ret);
508 }
509
510void SSL_set_client_CA_list(SSL *s,STACK_OF(X509_NAME) *list)
511 {
512 set_client_CA_list(&(s->client_CA),list);
513 }
514
515void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,STACK_OF(X509_NAME) *list)
516 {
517 set_client_CA_list(&(ctx->client_CA),list);
518 }
519
520STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(SSL_CTX *ctx)
521 {
522 return(ctx->client_CA);
523 }
524
525STACK_OF(X509_NAME) *SSL_get_client_CA_list(SSL *s)
526 {
527 if (s->type == SSL_ST_CONNECT)
528 { /* we are in the client */
529 if (((s->version>>8) == SSL3_VERSION_MAJOR) &&
530 (s->s3 != NULL))
531 return(s->s3->tmp.ca_names);
532 else
533 return(NULL);
534 }
535 else
536 {
537 if (s->client_CA != NULL)
538 return(s->client_CA);
539 else
540 return(s->ctx->client_CA);
541 }
542 }
543
544static int add_client_CA(STACK_OF(X509_NAME) **sk,X509 *x)
545 {
546 X509_NAME *name;
547
548 if (x == NULL) return(0);
549 if ((*sk == NULL) && ((*sk=sk_X509_NAME_new_null()) == NULL))
550 return(0);
551
552 if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL)
553 return(0);
554
555 if (!sk_X509_NAME_push(*sk,name))
556 {
557 X509_NAME_free(name);
558 return(0);
559 }
560 return(1);
561 }
562
563int SSL_add_client_CA(SSL *ssl,X509 *x)
564 {
565 return(add_client_CA(&(ssl->client_CA),x));
566 }
567
568int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x)
569 {
570 return(add_client_CA(&(ctx->client_CA),x));
571 }
572
573static int xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
574 {
575 return(X509_NAME_cmp(*a,*b));
576 }
577
578#ifndef NO_STDIO
579/*!
580 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
581 * it doesn't really have anything to do with clients (except that a common use
582 * for a stack of CAs is to send it to the client). Actually, it doesn't have
583 * much to do with CAs, either, since it will load any old cert.
584 * \param file the file containing one or more certs.
585 * \return a ::STACK containing the certs.
586 */
587STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
588 {
589 BIO *in;
590 X509 *x=NULL;
591 X509_NAME *xn=NULL;
592 STACK_OF(X509_NAME) *ret,*sk;
593
594 ret=sk_X509_NAME_new_null();
595 sk=sk_X509_NAME_new(xname_cmp);
596
597 in=BIO_new(BIO_s_file_internal());
598
599 if ((ret == NULL) || (sk == NULL) || (in == NULL))
600 {
601 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE);
602 goto err;
603 }
604
605 if (!BIO_read_filename(in,file))
606 goto err;
607
608 for (;;)
609 {
610 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL)
611 break;
612 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
613 /* check for duplicates */
614 xn=X509_NAME_dup(xn);
615 if (xn == NULL) goto err;
616 if (sk_X509_NAME_find(sk,xn) >= 0)
617 X509_NAME_free(xn);
618 else
619 {
620 sk_X509_NAME_push(sk,xn);
621 sk_X509_NAME_push(ret,xn);
622 }
623 }
624
625 if (0)
626 {
627err:
628 if (ret != NULL) sk_X509_NAME_pop_free(ret,X509_NAME_free);
629 ret=NULL;
630 }
631 if (sk != NULL) sk_X509_NAME_free(sk);
632 if (in != NULL) BIO_free(in);
633 if (x != NULL) X509_free(x);
634 return(ret);
635 }
636#endif
637
638/*!
639 * Add a file of certs to a stack.
640 * \param stack the stack to add to.
641 * \param file the file to add from. All certs in this file that are not
642 * already in the stack will be added.
643 * \return 1 for success, 0 for failure. Note that in the case of failure some
644 * certs may have been added to \c stack.
645 */
646
647int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
648 const char *file)
649 {
650 BIO *in;
651 X509 *x=NULL;
652 X509_NAME *xn=NULL;
653 int ret=1;
654 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b);
655
656 oldcmp=sk_X509_NAME_set_cmp_func(stack,xname_cmp);
657
658 in=BIO_new(BIO_s_file_internal());
659
660 if (in == NULL)
661 {
662 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE);
663 goto err;
664 }
665
666 if (!BIO_read_filename(in,file))
667 goto err;
668
669 for (;;)
670 {
671 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL)
672 break;
673 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
674 xn=X509_NAME_dup(xn);
675 if (xn == NULL) goto err;
676 if (sk_X509_NAME_find(stack,xn) >= 0)
677 X509_NAME_free(xn);
678 else
679 sk_X509_NAME_push(stack,xn);
680 }
681
682 if (0)
683 {
684err:
685 ret=0;
686 }
687 if(in != NULL)
688 BIO_free(in);
689 if(x != NULL)
690 X509_free(x);
691
692 sk_X509_NAME_set_cmp_func(stack,oldcmp);
693
694 return ret;
695 }
696
697/*!
698 * Add a directory of certs to a stack.
699 * \param stack the stack to append to.
700 * \param dir the directory to append from. All files in this directory will be
701 * examined as potential certs. Any that are acceptable to
702 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
703 * included.
704 * \return 1 for success, 0 for failure. Note that in the case of failure some
705 * certs may have been added to \c stack.
706 */
707
708#ifndef WIN32
709#ifndef VMS /* XXXX This may be fixed in the future */
710#ifndef MAC_OS_pre_X
711
712int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
713 const char *dir)
714 {
715 DIR *d;
716 struct dirent *dstruct;
717 int ret = 0;
718
719 CRYPTO_w_lock(CRYPTO_LOCK_READDIR);
720 d = opendir(dir);
721
722 /* Note that a side effect is that the CAs will be sorted by name */
723 if(!d)
724 {
725 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
726 ERR_add_error_data(3, "opendir('", dir, "')");
727 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
728 goto err;
729 }
730
731 while((dstruct=readdir(d)))
732 {
733 char buf[1024];
734 int r;
735
736 if(strlen(dir)+strlen(dstruct->d_name)+2 > sizeof buf)
737 {
738 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,SSL_R_PATH_TOO_LONG);
739 goto err;
740 }
741
742 r = BIO_snprintf(buf,sizeof buf,"%s/%s",dir,dstruct->d_name);
743 if (r <= 0 || r >= sizeof buf)
744 goto err;
745 if(!SSL_add_file_cert_subjects_to_stack(stack,buf))
746 goto err;
747 }
748 ret = 1;
749
750err:
751 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR);
752 return ret;
753 }
754
755#endif
756#endif
757#endif
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