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) 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 <stdio.h>
118
119 #include "e_os.h"
120 #ifndef NO_SYS_TYPES_H
121 # include <sys/types.h>
122 #endif
123
124 #include "o_dir.h"
125 #include <openssl/objects.h>
126 #include <openssl/bio.h>
127 #include <openssl/pem.h>
128 #include <openssl/x509v3.h>
129 #ifndef OPENSSL_NO_DH
130 #include <openssl/dh.h>
131 #endif
132 #include <openssl/bn.h>
133 #include "ssl_locl.h"
134
135 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
136 {
137 static volatile int ssl_x509_store_ctx_idx= -1;
138 int got_write_lock = 0;
139
140 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
141
142 if (ssl_x509_store_ctx_idx < 0)
143 {
144 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
145 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
146 got_write_lock = 1;
147
148 if (ssl_x509_store_ctx_idx < 0)
149 {
150 ssl_x509_store_ctx_idx=X509_STORE_CTX_get_ex_new_index(
151 0,"SSL for verify callback",NULL,NULL,NULL);
152 }
153 }
154
155 if (got_write_lock)
156 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
157 else
158 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
159
160 return ssl_x509_store_ctx_idx;
161 }
162
163 static void ssl_cert_set_default_md(CERT *cert)
164 {
165 /* Set digest values to defaults */
166 #ifndef OPENSSL_NO_DSA
167 cert->pkeys[SSL_PKEY_DSA_SIGN].digest = EVP_sha1();
168 #endif
169 #ifndef OPENSSL_NO_RSA
170 cert->pkeys[SSL_PKEY_RSA_SIGN].digest = EVP_sha1();
171 cert->pkeys[SSL_PKEY_RSA_ENC].digest = EVP_sha1();
172 #endif
173 #ifndef OPENSSL_NO_ECDSA
174 cert->pkeys[SSL_PKEY_ECC].digest = EVP_sha1();
175 #endif
176 }
177
178 CERT *ssl_cert_new(void)
179 {
180 CERT *ret;
181
182 ret=(CERT *)OPENSSL_malloc(sizeof(CERT));
183 if (ret == NULL)
184 {
185 SSLerr(SSL_F_SSL_CERT_NEW,ERR_R_MALLOC_FAILURE);
186 return(NULL);
187 }
188 memset(ret,0,sizeof(CERT));
189
190 ret->key= &(ret->pkeys[SSL_PKEY_RSA_ENC]);
191 ret->references=1;
192 ssl_cert_set_default_md(ret);
193 return(ret);
194 }
195
196 CERT *ssl_cert_dup(CERT *cert)
197 {
198 CERT *ret;
199 int i;
200
201 ret = (CERT *)OPENSSL_malloc(sizeof(CERT));
202 if (ret == NULL)
203 {
204 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
205 return(NULL);
206 }
207
208 memset(ret, 0, sizeof(CERT));
209
210 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]];
211 /* or ret->key = ret->pkeys + (cert->key - cert->pkeys),
212 * if you find that more readable */
213
214 ret->valid = cert->valid;
215 ret->mask_k = cert->mask_k;
216 ret->mask_a = cert->mask_a;
217 ret->export_mask_k = cert->export_mask_k;
218 ret->export_mask_a = cert->export_mask_a;
219
220 #ifndef OPENSSL_NO_RSA
221 if (cert->rsa_tmp != NULL)
222 {
223 RSA_up_ref(cert->rsa_tmp);
224 ret->rsa_tmp = cert->rsa_tmp;
225 }
226 ret->rsa_tmp_cb = cert->rsa_tmp_cb;
227 #endif
228
229 #ifndef OPENSSL_NO_DH
230 if (cert->dh_tmp != NULL)
231 {
232 ret->dh_tmp = DHparams_dup(cert->dh_tmp);
233 if (ret->dh_tmp == NULL)
234 {
235 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB);
236 goto err;
237 }
238 if (cert->dh_tmp->priv_key)
239 {
240 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key);
241 if (!b)
242 {
243 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
244 goto err;
245 }
246 ret->dh_tmp->priv_key = b;
247 }
248 if (cert->dh_tmp->pub_key)
249 {
250 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key);
251 if (!b)
252 {
253 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
254 goto err;
255 }
256 ret->dh_tmp->pub_key = b;
257 }
258 }
259 ret->dh_tmp_cb = cert->dh_tmp_cb;
260 #endif
261
262 #ifndef OPENSSL_NO_ECDH
263 if (cert->ecdh_tmp)
264 {
265 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp);
266 if (ret->ecdh_tmp == NULL)
267 {
268 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB);
269 goto err;
270 }
271 }
272 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb;
273 #endif
274
275 for (i = 0; i < SSL_PKEY_NUM; i++)
276 {
277 if (cert->pkeys[i].x509 != NULL)
278 {
279 ret->pkeys[i].x509 = cert->pkeys[i].x509;
280 CRYPTO_add(&ret->pkeys[i].x509->references, 1,
281 CRYPTO_LOCK_X509);
282 }
283
284 if (cert->pkeys[i].privatekey != NULL)
285 {
286 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey;
287 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1,
288 CRYPTO_LOCK_EVP_PKEY);
289
290 switch(i)
291 {
292 /* If there was anything special to do for
293 * certain types of keys, we'd do it here.
294 * (Nothing at the moment, I think.) */
295
296 case SSL_PKEY_RSA_ENC:
297 case SSL_PKEY_RSA_SIGN:
298 /* We have an RSA key. */
299 break;
300
301 case SSL_PKEY_DSA_SIGN:
302 /* We have a DSA key. */
303 break;
304
305 case SSL_PKEY_DH_RSA:
306 case SSL_PKEY_DH_DSA:
307 /* We have a DH key. */
308 break;
309
310 case SSL_PKEY_ECC:
311 /* We have an ECC key */
312 break;
313
314 default:
315 /* Can't happen. */
316 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG);
317 }
318 }
319 }
320
321 /* ret->extra_certs *should* exist, but currently the own certificate
322 * chain is held inside SSL_CTX */
323
324 ret->references=1;
325 /* Set digests to defaults. NB: we don't copy existing values as they
326 * will be set during handshake.
327 */
328 ssl_cert_set_default_md(ret);
329
330 return(ret);
331
332 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH)
333 err:
334 #endif
335 #ifndef OPENSSL_NO_RSA
336 if (ret->rsa_tmp != NULL)
337 RSA_free(ret->rsa_tmp);
338 #endif
339 #ifndef OPENSSL_NO_DH
340 if (ret->dh_tmp != NULL)
341 DH_free(ret->dh_tmp);
342 #endif
343 #ifndef OPENSSL_NO_ECDH
344 if (ret->ecdh_tmp != NULL)
345 EC_KEY_free(ret->ecdh_tmp);
346 #endif
347
348 for (i = 0; i < SSL_PKEY_NUM; i++)
349 {
350 if (ret->pkeys[i].x509 != NULL)
351 X509_free(ret->pkeys[i].x509);
352 if (ret->pkeys[i].privatekey != NULL)
353 EVP_PKEY_free(ret->pkeys[i].privatekey);
354 }
355
356 return NULL;
357 }
358
359
360 void ssl_cert_free(CERT *c)
361 {
362 int i;
363
364 if(c == NULL)
365 return;
366
367 i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT);
368 #ifdef REF_PRINT
369 REF_PRINT("CERT",c);
370 #endif
371 if (i > 0) return;
372 #ifdef REF_CHECK
373 if (i < 0)
374 {
375 fprintf(stderr,"ssl_cert_free, bad reference count\n");
376 abort(); /* ok */
377 }
378 #endif
379
380 #ifndef OPENSSL_NO_RSA
381 if (c->rsa_tmp) RSA_free(c->rsa_tmp);
382 #endif
383 #ifndef OPENSSL_NO_DH
384 if (c->dh_tmp) DH_free(c->dh_tmp);
385 #endif
386 #ifndef OPENSSL_NO_ECDH
387 if (c->ecdh_tmp) EC_KEY_free(c->ecdh_tmp);
388 #endif
389
390 for (i=0; i<SSL_PKEY_NUM; i++)
391 {
392 if (c->pkeys[i].x509 != NULL)
393 X509_free(c->pkeys[i].x509);
394 if (c->pkeys[i].privatekey != NULL)
395 EVP_PKEY_free(c->pkeys[i].privatekey);
396 #if 0
397 if (c->pkeys[i].publickey != NULL)
398 EVP_PKEY_free(c->pkeys[i].publickey);
399 #endif
400 }
401 OPENSSL_free(c);
402 }
403
404 int ssl_cert_inst(CERT **o)
405 {
406 /* Create a CERT if there isn't already one
407 * (which cannot really happen, as it is initially created in
408 * SSL_CTX_new; but the earlier code usually allows for that one
409 * being non-existant, so we follow that behaviour, as it might
410 * turn out that there actually is a reason for it -- but I'm
411 * not sure that *all* of the existing code could cope with
412 * s->cert being NULL, otherwise we could do without the
413 * initialization in SSL_CTX_new).
414 */
415
416 if (o == NULL)
417 {
418 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER);
419 return(0);
420 }
421 if (*o == NULL)
422 {
423 if ((*o = ssl_cert_new()) == NULL)
424 {
425 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE);
426 return(0);
427 }
428 }
429 return(1);
430 }
431
432
433 SESS_CERT *ssl_sess_cert_new(void)
434 {
435 SESS_CERT *ret;
436
437 ret = OPENSSL_malloc(sizeof *ret);
438 if (ret == NULL)
439 {
440 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE);
441 return NULL;
442 }
443
444 memset(ret, 0 ,sizeof *ret);
445 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]);
446 ret->references = 1;
447
448 return ret;
449 }
450
451 void ssl_sess_cert_free(SESS_CERT *sc)
452 {
453 int i;
454
455 if (sc == NULL)
456 return;
457
458 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT);
459 #ifdef REF_PRINT
460 REF_PRINT("SESS_CERT", sc);
461 #endif
462 if (i > 0)
463 return;
464 #ifdef REF_CHECK
465 if (i < 0)
466 {
467 fprintf(stderr,"ssl_sess_cert_free, bad reference count\n");
468 abort(); /* ok */
469 }
470 #endif
471
472 /* i == 0 */
473 if (sc->cert_chain != NULL)
474 sk_X509_pop_free(sc->cert_chain, X509_free);
475 for (i = 0; i < SSL_PKEY_NUM; i++)
476 {
477 if (sc->peer_pkeys[i].x509 != NULL)
478 X509_free(sc->peer_pkeys[i].x509);
479 #if 0 /* We don't have the peer's private key. These lines are just
480 * here as a reminder that we're still using a not-quite-appropriate
481 * data structure. */
482 if (sc->peer_pkeys[i].privatekey != NULL)
483 EVP_PKEY_free(sc->peer_pkeys[i].privatekey);
484 #endif
485 }
486
487 #ifndef OPENSSL_NO_RSA
488 if (sc->peer_rsa_tmp != NULL)
489 RSA_free(sc->peer_rsa_tmp);
490 #endif
491 #ifndef OPENSSL_NO_DH
492 if (sc->peer_dh_tmp != NULL)
493 DH_free(sc->peer_dh_tmp);
494 #endif
495 #ifndef OPENSSL_NO_ECDH
496 if (sc->peer_ecdh_tmp != NULL)
497 EC_KEY_free(sc->peer_ecdh_tmp);
498 #endif
499
500 OPENSSL_free(sc);
501 }
502
503 int ssl_set_peer_cert_type(SESS_CERT *sc,int type)
504 {
505 sc->peer_cert_type = type;
506 return(1);
507 }
508
509 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk)
510 {
511 X509 *x;
512 int i;
513 X509_STORE_CTX ctx;
514
515 if ((sk == NULL) || (sk_X509_num(sk) == 0))
516 return(0);
517
518 x=sk_X509_value(sk,0);
519 if(!X509_STORE_CTX_init(&ctx,s->ctx->cert_store,x,sk))
520 {
521 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,ERR_R_X509_LIB);
522 return(0);
523 }
524 #if 0
525 if (SSL_get_verify_depth(s) >= 0)
526 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s));
527 #endif
528 X509_STORE_CTX_set_ex_data(&ctx,SSL_get_ex_data_X509_STORE_CTX_idx(),s);
529
530 /* We need to inherit the verify parameters. These can be determined by
531 * the context: if its a server it will verify SSL client certificates
532 * or vice versa.
533 */
534
535 X509_STORE_CTX_set_default(&ctx,
536 s->server ? "ssl_client" : "ssl_server");
537 /* Anything non-default in "param" should overwrite anything in the
538 * ctx.
539 */
540 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param);
541
542 if (s->verify_callback)
543 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback);
544
545 if (s->ctx->app_verify_callback != NULL)
546 #if 1 /* new with OpenSSL 0.9.7 */
547 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg);
548 #else
549 i=s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */
550 #endif
551 else
552 {
553 #ifndef OPENSSL_NO_X509_VERIFY
554 i=X509_verify_cert(&ctx);
555 #else
556 i=0;
557 ctx.error=X509_V_ERR_APPLICATION_VERIFICATION;
558 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_NO_VERIFY_CALLBACK);
559 #endif
560 }
561
562 s->verify_result=ctx.error;
563 X509_STORE_CTX_cleanup(&ctx);
564
565 return(i);
566 }
567
568 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,STACK_OF(X509_NAME) *name_list)
569 {
570 if (*ca_list != NULL)
571 sk_X509_NAME_pop_free(*ca_list,X509_NAME_free);
572
573 *ca_list=name_list;
574 }
575
576 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk)
577 {
578 int i;
579 STACK_OF(X509_NAME) *ret;
580 X509_NAME *name;
581
582 ret=sk_X509_NAME_new_null();
583 for (i=0; i<sk_X509_NAME_num(sk); i++)
584 {
585 name=X509_NAME_dup(sk_X509_NAME_value(sk,i));
586 if ((name == NULL) || !sk_X509_NAME_push(ret,name))
587 {
588 sk_X509_NAME_pop_free(ret,X509_NAME_free);
589 return(NULL);
590 }
591 }
592 return(ret);
593 }
594
595 void SSL_set_client_CA_list(SSL *s,STACK_OF(X509_NAME) *name_list)
596 {
597 set_client_CA_list(&(s->client_CA),name_list);
598 }
599
600 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,STACK_OF(X509_NAME) *name_list)
601 {
602 set_client_CA_list(&(ctx->client_CA),name_list);
603 }
604
605 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
606 {
607 return(ctx->client_CA);
608 }
609
610 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
611 {
612 if (s->type == SSL_ST_CONNECT)
613 { /* we are in the client */
614 if (((s->version>>8) == SSL3_VERSION_MAJOR) &&
615 (s->s3 != NULL))
616 return(s->s3->tmp.ca_names);
617 else
618 return(NULL);
619 }
620 else
621 {
622 if (s->client_CA != NULL)
623 return(s->client_CA);
624 else
625 return(s->ctx->client_CA);
626 }
627 }
628
629 static int add_client_CA(STACK_OF(X509_NAME) **sk,X509 *x)
630 {
631 X509_NAME *name;
632
633 if (x == NULL) return(0);
634 if ((*sk == NULL) && ((*sk=sk_X509_NAME_new_null()) == NULL))
635 return(0);
636
637 if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL)
638 return(0);
639
640 if (!sk_X509_NAME_push(*sk,name))
641 {
642 X509_NAME_free(name);
643 return(0);
644 }
645 return(1);
646 }
647
648 int SSL_add_client_CA(SSL *ssl,X509 *x)
649 {
650 return(add_client_CA(&(ssl->client_CA),x));
651 }
652
653 int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x)
654 {
655 return(add_client_CA(&(ctx->client_CA),x));
656 }
657
658 static int xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
659 {
660 return(X509_NAME_cmp(*a,*b));
661 }
662
663 #ifndef OPENSSL_NO_STDIO
664 /*!
665 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
666 * it doesn't really have anything to do with clients (except that a common use
667 * for a stack of CAs is to send it to the client). Actually, it doesn't have
668 * much to do with CAs, either, since it will load any old cert.
669 * \param file the file containing one or more certs.
670 * \return a ::STACK containing the certs.
671 */
672 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
673 {
674 BIO *in;
675 X509 *x=NULL;
676 X509_NAME *xn=NULL;
677 STACK_OF(X509_NAME) *ret = NULL,*sk;
678
679 sk=sk_X509_NAME_new(xname_cmp);
680
681 in=BIO_new(BIO_s_file_internal());
682
683 if ((sk == NULL) || (in == NULL))
684 {
685 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE);
686 goto err;
687 }
688
689 if (!BIO_read_filename(in,file))
690 goto err;
691
692 for (;;)
693 {
694 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL)
695 break;
696 if (ret == NULL)
697 {
698 ret = sk_X509_NAME_new_null();
699 if (ret == NULL)
700 {
701 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE);
702 goto err;
703 }
704 }
705 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
706 /* check for duplicates */
707 xn=X509_NAME_dup(xn);
708 if (xn == NULL) goto err;
709 if (sk_X509_NAME_find(sk,xn) >= 0)
710 X509_NAME_free(xn);
711 else
712 {
713 sk_X509_NAME_push(sk,xn);
714 sk_X509_NAME_push(ret,xn);
715 }
716 }
717
718 if (0)
719 {
720 err:
721 if (ret != NULL) sk_X509_NAME_pop_free(ret,X509_NAME_free);
722 ret=NULL;
723 }
724 if (sk != NULL) sk_X509_NAME_free(sk);
725 if (in != NULL) BIO_free(in);
726 if (x != NULL) X509_free(x);
727 if (ret != NULL)
728 ERR_clear_error();
729 return(ret);
730 }
731 #endif
732
733 /*!
734 * Add a file of certs to a stack.
735 * \param stack the stack to add to.
736 * \param file the file to add from. All certs in this file that are not
737 * already in the stack will be added.
738 * \return 1 for success, 0 for failure. Note that in the case of failure some
739 * certs may have been added to \c stack.
740 */
741
742 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
743 const char *file)
744 {
745 BIO *in;
746 X509 *x=NULL;
747 X509_NAME *xn=NULL;
748 int ret=1;
749 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b);
750
751 oldcmp=sk_X509_NAME_set_cmp_func(stack,xname_cmp);
752
753 in=BIO_new(BIO_s_file_internal());
754
755 if (in == NULL)
756 {
757 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE);
758 goto err;
759 }
760
761 if (!BIO_read_filename(in,file))
762 goto err;
763
764 for (;;)
765 {
766 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL)
767 break;
768 if ((xn=X509_get_subject_name(x)) == NULL) goto err;
769 xn=X509_NAME_dup(xn);
770 if (xn == NULL) goto err;
771 if (sk_X509_NAME_find(stack,xn) >= 0)
772 X509_NAME_free(xn);
773 else
774 sk_X509_NAME_push(stack,xn);
775 }
776
777 ERR_clear_error();
778
779 if (0)
780 {
781 err:
782 ret=0;
783 }
784 if(in != NULL)
785 BIO_free(in);
786 if(x != NULL)
787 X509_free(x);
788
789 (void)sk_X509_NAME_set_cmp_func(stack,oldcmp);
790
791 return ret;
792 }
793
794 /*!
795 * Add a directory of certs to a stack.
796 * \param stack the stack to append to.
797 * \param dir the directory to append from. All files in this directory will be
798 * examined as potential certs. Any that are acceptable to
799 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
800 * included.
801 * \return 1 for success, 0 for failure. Note that in the case of failure some
802 * certs may have been added to \c stack.
803 */
804
805 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
806 const char *dir)
807 {
808 OPENSSL_DIR_CTX *d = NULL;
809 const char *filename;
810 int ret = 0;
811
812 CRYPTO_w_lock(CRYPTO_LOCK_READDIR);
813
814 /* Note that a side effect is that the CAs will be sorted by name */
815
816 while((filename = OPENSSL_DIR_read(&d, dir)))
817 {
818 char buf[1024];
819 int r;
820
821 if(strlen(dir)+strlen(filename)+2 > sizeof buf)
822 {
823 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,SSL_R_PATH_TOO_LONG);
824 goto err;
825 }
826
827 #ifdef OPENSSL_SYS_VMS
828 r = BIO_snprintf(buf,sizeof buf,"%s%s",dir,filename);
829 #else
830 r = BIO_snprintf(buf,sizeof buf,"%s/%s",dir,filename);
831 #endif
832 if (r <= 0 || r >= (int)sizeof(buf))
833 goto err;
834 if(!SSL_add_file_cert_subjects_to_stack(stack,buf))
835 goto err;
836 }
837
838 if (errno)
839 {
840 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
841 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
842 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
843 goto err;
844 }
845
846 ret = 1;
847
848 err:
849 if (d) OPENSSL_DIR_end(&d);
850 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR);
851 return ret;
852 }