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 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 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 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 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 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 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 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 * 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 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 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 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 } 462 463 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 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 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 } 498 499 STACK_OF(X509_NAME) * 500 SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 501 { 502 return (ctx->internal->client_CA); 503 } 504 505 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 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 543 SSL_add_client_CA(SSL *ssl, X509 *x) 544 { 545 return (add_client_CA(&(ssl->internal->client_CA), x)); 546 } 547 548 int 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 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 */ 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 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 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