1 /* $OpenBSD: ssl_cert.c,v 1.86 2021/10/23 20:42:50 beck 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 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 * 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 * 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 X509_up_ref(ret->pkeys[i].x509); 228 } 229 230 if (cert->pkeys[i].privatekey != NULL) { 231 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey; 232 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1, 233 CRYPTO_LOCK_EVP_PKEY); 234 235 switch (i) { 236 /* 237 * If there was anything special to do for 238 * certain types of keys, we'd do it here. 239 * (Nothing at the moment, I think.) 240 */ 241 242 case SSL_PKEY_RSA: 243 /* We have an RSA key. */ 244 break; 245 246 case SSL_PKEY_ECC: 247 /* We have an ECC key */ 248 break; 249 250 case SSL_PKEY_GOST01: 251 /* We have a GOST key */ 252 break; 253 254 default: 255 /* Can't happen. */ 256 SSLerrorx(SSL_R_LIBRARY_BUG); 257 } 258 } 259 260 if (cert->pkeys[i].chain != NULL) { 261 if ((ret->pkeys[i].chain = 262 X509_chain_up_ref(cert->pkeys[i].chain)) == NULL) 263 goto err; 264 } 265 } 266 267 /* 268 * ret->extra_certs *should* exist, but currently the own certificate 269 * chain is held inside SSL_CTX 270 */ 271 272 ret->references = 1; 273 274 return (ret); 275 276 err: 277 DH_free(ret->dh_tmp); 278 279 for (i = 0; i < SSL_PKEY_NUM; i++) { 280 X509_free(ret->pkeys[i].x509); 281 EVP_PKEY_free(ret->pkeys[i].privatekey); 282 sk_X509_pop_free(ret->pkeys[i].chain, X509_free); 283 } 284 free (ret); 285 return NULL; 286 } 287 288 289 void 290 ssl_cert_free(CERT *c) 291 { 292 int i; 293 294 if (c == NULL) 295 return; 296 297 i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT); 298 if (i > 0) 299 return; 300 301 DH_free(c->dh_tmp); 302 303 for (i = 0; i < SSL_PKEY_NUM; i++) { 304 X509_free(c->pkeys[i].x509); 305 EVP_PKEY_free(c->pkeys[i].privatekey); 306 sk_X509_pop_free(c->pkeys[i].chain, X509_free); 307 } 308 309 free(c); 310 } 311 312 int 313 ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain) 314 { 315 if (c->key == NULL) 316 return 0; 317 318 sk_X509_pop_free(c->key->chain, X509_free); 319 c->key->chain = chain; 320 321 return 1; 322 } 323 324 int 325 ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain) 326 { 327 STACK_OF(X509) *new_chain = NULL; 328 329 if (chain != NULL) { 330 if ((new_chain = X509_chain_up_ref(chain)) == NULL) 331 return 0; 332 } 333 if (!ssl_cert_set0_chain(c, new_chain)) { 334 sk_X509_pop_free(new_chain, X509_free); 335 return 0; 336 } 337 338 return 1; 339 } 340 341 int 342 ssl_cert_add0_chain_cert(CERT *c, X509 *cert) 343 { 344 if (c->key == NULL) 345 return 0; 346 347 if (c->key->chain == NULL) { 348 if ((c->key->chain = sk_X509_new_null()) == NULL) 349 return 0; 350 } 351 if (!sk_X509_push(c->key->chain, cert)) 352 return 0; 353 354 return 1; 355 } 356 357 int 358 ssl_cert_add1_chain_cert(CERT *c, X509 *cert) 359 { 360 if (!ssl_cert_add0_chain_cert(c, cert)) 361 return 0; 362 363 X509_up_ref(cert); 364 365 return 1; 366 } 367 368 SESS_CERT * 369 ssl_sess_cert_new(void) 370 { 371 SESS_CERT *ret; 372 373 ret = calloc(1, sizeof *ret); 374 if (ret == NULL) { 375 SSLerrorx(ERR_R_MALLOC_FAILURE); 376 return NULL; 377 } 378 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA]); 379 ret->references = 1; 380 381 return ret; 382 } 383 384 void 385 ssl_sess_cert_free(SESS_CERT *sc) 386 { 387 int i; 388 389 if (sc == NULL) 390 return; 391 392 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT); 393 if (i > 0) 394 return; 395 396 sk_X509_pop_free(sc->cert_chain, X509_free); 397 for (i = 0; i < SSL_PKEY_NUM; i++) 398 X509_free(sc->peer_pkeys[i].x509); 399 400 DH_free(sc->peer_dh_tmp); 401 EC_KEY_free(sc->peer_ecdh_tmp); 402 free(sc->peer_x25519_tmp); 403 404 free(sc); 405 } 406 407 int 408 ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk) 409 { 410 X509_STORE_CTX *ctx = NULL; 411 X509 *x; 412 int ret = 0; 413 414 if ((sk == NULL) || (sk_X509_num(sk) == 0)) 415 goto err; 416 417 if ((ctx = X509_STORE_CTX_new()) == NULL) 418 goto err; 419 420 x = sk_X509_value(sk, 0); 421 if (!X509_STORE_CTX_init(ctx, s->ctx->cert_store, x, sk)) { 422 SSLerror(s, ERR_R_X509_LIB); 423 goto err; 424 } 425 X509_STORE_CTX_set_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s); 426 427 /* 428 * We need to inherit the verify parameters. These can be 429 * determined by the context: if its a server it will verify 430 * SSL client certificates or vice versa. 431 */ 432 X509_STORE_CTX_set_default(ctx, 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 = X509_STORE_CTX_get_error(ctx); 450 sk_X509_pop_free(s->internal->verified_chain, X509_free); 451 s->internal->verified_chain = NULL; 452 if (X509_STORE_CTX_get0_chain(ctx) != NULL) { 453 s->internal->verified_chain = X509_STORE_CTX_get1_chain(ctx); 454 if (s->internal->verified_chain == NULL) { 455 SSLerrorx(ERR_R_MALLOC_FAILURE); 456 ret = 0; 457 } 458 } 459 460 err: 461 X509_STORE_CTX_free(ctx); 462 463 return (ret); 464 } 465 466 static void 467 set_client_CA_list(STACK_OF(X509_NAME) **ca_list, 468 STACK_OF(X509_NAME) *name_list) 469 { 470 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free); 471 *ca_list = name_list; 472 } 473 474 STACK_OF(X509_NAME) * 475 SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk) 476 { 477 int i; 478 STACK_OF(X509_NAME) *ret; 479 X509_NAME *name = NULL; 480 481 if ((ret = sk_X509_NAME_new_null()) == NULL) 482 goto err; 483 484 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 485 if ((name = X509_NAME_dup(sk_X509_NAME_value(sk, i))) == NULL) 486 goto err; 487 if (!sk_X509_NAME_push(ret, name)) 488 goto err; 489 } 490 return (ret); 491 492 err: 493 X509_NAME_free(name); 494 sk_X509_NAME_pop_free(ret, X509_NAME_free); 495 return NULL; 496 } 497 498 void 499 SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list) 500 { 501 set_client_CA_list(&(s->internal->client_CA), name_list); 502 } 503 504 void 505 SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) 506 { 507 set_client_CA_list(&(ctx->internal->client_CA), name_list); 508 } 509 510 STACK_OF(X509_NAME) * 511 SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 512 { 513 return (ctx->internal->client_CA); 514 } 515 516 STACK_OF(X509_NAME) * 517 SSL_get_client_CA_list(const SSL *s) 518 { 519 if (!s->server) { 520 /* We are in the client. */ 521 if ((s->version >> 8) == SSL3_VERSION_MAJOR) 522 return (S3I(s)->hs.tls12.ca_names); 523 else 524 return (NULL); 525 } else { 526 if (s->internal->client_CA != NULL) 527 return (s->internal->client_CA); 528 else 529 return (s->ctx->internal->client_CA); 530 } 531 } 532 533 static int 534 add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x) 535 { 536 X509_NAME *name; 537 538 if (x == NULL) 539 return (0); 540 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL)) 541 return (0); 542 543 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL) 544 return (0); 545 546 if (!sk_X509_NAME_push(*sk, name)) { 547 X509_NAME_free(name); 548 return (0); 549 } 550 return (1); 551 } 552 553 int 554 SSL_add_client_CA(SSL *ssl, X509 *x) 555 { 556 return (add_client_CA(&(ssl->internal->client_CA), x)); 557 } 558 559 int 560 SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x) 561 { 562 return (add_client_CA(&(ctx->internal->client_CA), x)); 563 } 564 565 static int 566 xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 567 { 568 return (X509_NAME_cmp(*a, *b)); 569 } 570 571 /*! 572 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 573 * it doesn't really have anything to do with clients (except that a common use 574 * for a stack of CAs is to send it to the client). Actually, it doesn't have 575 * much to do with CAs, either, since it will load any old cert. 576 * \param file the file containing one or more certs. 577 * \return a ::STACK containing the certs. 578 */ 579 STACK_OF(X509_NAME) * 580 SSL_load_client_CA_file(const char *file) 581 { 582 BIO *in; 583 X509 *x = NULL; 584 X509_NAME *xn = NULL; 585 STACK_OF(X509_NAME) *ret = NULL, *sk; 586 587 sk = sk_X509_NAME_new(xname_cmp); 588 589 in = BIO_new(BIO_s_file_internal()); 590 591 if ((sk == NULL) || (in == NULL)) { 592 SSLerrorx(ERR_R_MALLOC_FAILURE); 593 goto err; 594 } 595 596 if (!BIO_read_filename(in, file)) 597 goto err; 598 599 for (;;) { 600 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 601 break; 602 if (ret == NULL) { 603 ret = sk_X509_NAME_new_null(); 604 if (ret == NULL) { 605 SSLerrorx(ERR_R_MALLOC_FAILURE); 606 goto err; 607 } 608 } 609 if ((xn = X509_get_subject_name(x)) == NULL) 610 goto err; 611 /* check for duplicates */ 612 xn = X509_NAME_dup(xn); 613 if (xn == NULL) 614 goto err; 615 if (sk_X509_NAME_find(sk, xn) >= 0) 616 X509_NAME_free(xn); 617 else { 618 sk_X509_NAME_push(sk, xn); 619 sk_X509_NAME_push(ret, xn); 620 } 621 } 622 623 if (0) { 624 err: 625 sk_X509_NAME_pop_free(ret, X509_NAME_free); 626 ret = NULL; 627 } 628 sk_X509_NAME_free(sk); 629 BIO_free(in); 630 X509_free(x); 631 if (ret != NULL) 632 ERR_clear_error(); 633 634 return (ret); 635 } 636 637 /*! 638 * Add a file of certs to a stack. 639 * \param stack the stack to add to. 640 * \param file the file to add from. All certs in this file that are not 641 * already in the stack will be added. 642 * \return 1 for success, 0 for failure. Note that in the case of failure some 643 * certs may have been added to \c stack. 644 */ 645 646 int 647 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 SSLerrorx(ERR_R_MALLOC_FAILURE); 662 goto err; 663 } 664 665 if (!BIO_read_filename(in, file)) 666 goto err; 667 668 for (;;) { 669 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 670 break; 671 if ((xn = X509_get_subject_name(x)) == NULL) 672 goto err; 673 xn = X509_NAME_dup(xn); 674 if (xn == NULL) 675 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 ERR_clear_error(); 683 684 if (0) { 685 err: 686 ret = 0; 687 } 688 BIO_free(in); 689 X509_free(x); 690 691 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp); 692 693 return ret; 694 } 695 696 /*! 697 * Add a directory of certs to a stack. 698 * \param stack the stack to append to. 699 * \param dir the directory to append from. All files in this directory will be 700 * examined as potential certs. Any that are acceptable to 701 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will 702 * be included. 703 * \return 1 for success, 0 for failure. Note that in the case of failure some 704 * certs may have been added to \c stack. 705 */ 706 707 int 708 SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, const char *dir) 709 { 710 DIR *dirp = NULL; 711 char *path = NULL; 712 int ret = 0; 713 714 dirp = opendir(dir); 715 if (dirp) { 716 struct dirent *dp; 717 while ((dp = readdir(dirp)) != NULL) { 718 if (asprintf(&path, "%s/%s", dir, dp->d_name) != -1) { 719 ret = SSL_add_file_cert_subjects_to_stack( 720 stack, path); 721 free(path); 722 } 723 if (!ret) 724 break; 725 } 726 (void) closedir(dirp); 727 } 728 if (!ret) { 729 SYSerror(errno); 730 ERR_asprintf_error_data("opendir ('%s')", dir); 731 SSLerrorx(ERR_R_SYS_LIB); 732 } 733 return ret; 734 } 735