1 /* $OpenBSD: ssl_cert.c,v 1.74 2019/03/25 17:33:26 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_ENC]); 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_ENC: 244 case SSL_PKEY_RSA_SIGN: 245 /* We have an RSA key. */ 246 break; 247 248 case SSL_PKEY_DH_RSA: 249 /* We have a DH key. */ 250 break; 251 252 case SSL_PKEY_ECC: 253 /* We have an ECC key */ 254 break; 255 256 default: 257 /* Can't happen. */ 258 SSLerrorx(SSL_R_LIBRARY_BUG); 259 } 260 } 261 262 if (cert->pkeys[i].chain != NULL) { 263 if ((ret->pkeys[i].chain = 264 X509_chain_up_ref(cert->pkeys[i].chain)) == NULL) 265 goto err; 266 } 267 } 268 269 /* 270 * ret->extra_certs *should* exist, but currently the own certificate 271 * chain is held inside SSL_CTX 272 */ 273 274 ret->references = 1; 275 276 return (ret); 277 278 err: 279 DH_free(ret->dh_tmp); 280 281 for (i = 0; i < SSL_PKEY_NUM; i++) { 282 X509_free(ret->pkeys[i].x509); 283 EVP_PKEY_free(ret->pkeys[i].privatekey); 284 sk_X509_pop_free(ret->pkeys[i].chain, X509_free); 285 } 286 free (ret); 287 return NULL; 288 } 289 290 291 void 292 ssl_cert_free(CERT *c) 293 { 294 int i; 295 296 if (c == NULL) 297 return; 298 299 i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT); 300 if (i > 0) 301 return; 302 303 DH_free(c->dh_tmp); 304 305 for (i = 0; i < SSL_PKEY_NUM; i++) { 306 X509_free(c->pkeys[i].x509); 307 EVP_PKEY_free(c->pkeys[i].privatekey); 308 sk_X509_pop_free(c->pkeys[i].chain, X509_free); 309 } 310 311 free(c); 312 } 313 314 int 315 ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain) 316 { 317 if (c->key == NULL) 318 return 0; 319 320 sk_X509_pop_free(c->key->chain, X509_free); 321 c->key->chain = chain; 322 323 return 1; 324 } 325 326 int 327 ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain) 328 { 329 STACK_OF(X509) *new_chain = NULL; 330 331 if (chain != NULL) { 332 if ((new_chain = X509_chain_up_ref(chain)) == NULL) 333 return 0; 334 } 335 if (!ssl_cert_set0_chain(c, new_chain)) { 336 sk_X509_pop_free(new_chain, X509_free); 337 return 0; 338 } 339 340 return 1; 341 } 342 343 int 344 ssl_cert_add0_chain_cert(CERT *c, X509 *cert) 345 { 346 if (c->key == NULL) 347 return 0; 348 349 if (c->key->chain == NULL) { 350 if ((c->key->chain = sk_X509_new_null()) == NULL) 351 return 0; 352 } 353 if (!sk_X509_push(c->key->chain, cert)) 354 return 0; 355 356 return 1; 357 } 358 359 int 360 ssl_cert_add1_chain_cert(CERT *c, X509 *cert) 361 { 362 if (!ssl_cert_add0_chain_cert(c, cert)) 363 return 0; 364 365 X509_up_ref(cert); 366 367 return 1; 368 } 369 370 SESS_CERT * 371 ssl_sess_cert_new(void) 372 { 373 SESS_CERT *ret; 374 375 ret = calloc(1, sizeof *ret); 376 if (ret == NULL) { 377 SSLerrorx(ERR_R_MALLOC_FAILURE); 378 return NULL; 379 } 380 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]); 381 ret->references = 1; 382 383 return ret; 384 } 385 386 void 387 ssl_sess_cert_free(SESS_CERT *sc) 388 { 389 int i; 390 391 if (sc == NULL) 392 return; 393 394 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT); 395 if (i > 0) 396 return; 397 398 sk_X509_pop_free(sc->cert_chain, X509_free); 399 for (i = 0; i < SSL_PKEY_NUM; i++) 400 X509_free(sc->peer_pkeys[i].x509); 401 402 DH_free(sc->peer_dh_tmp); 403 EC_KEY_free(sc->peer_ecdh_tmp); 404 free(sc->peer_x25519_tmp); 405 406 free(sc); 407 } 408 409 int 410 ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk) 411 { 412 X509_STORE_CTX ctx; 413 X509 *x; 414 int ret; 415 416 if ((sk == NULL) || (sk_X509_num(sk) == 0)) 417 return (0); 418 419 x = sk_X509_value(sk, 0); 420 if (!X509_STORE_CTX_init(&ctx, s->ctx->cert_store, x, sk)) { 421 SSLerror(s, ERR_R_X509_LIB); 422 return (0); 423 } 424 X509_STORE_CTX_set_ex_data(&ctx, 425 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, 433 s->server ? "ssl_client" : "ssl_server"); 434 435 /* 436 * Anything non-default in "param" should overwrite anything 437 * in the ctx. 438 */ 439 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param); 440 441 if (s->internal->verify_callback) 442 X509_STORE_CTX_set_verify_cb(&ctx, s->internal->verify_callback); 443 444 if (s->ctx->internal->app_verify_callback != NULL) 445 ret = s->ctx->internal->app_verify_callback(&ctx, 446 s->ctx->internal->app_verify_arg); 447 else 448 ret = X509_verify_cert(&ctx); 449 450 s->verify_result = ctx.error; 451 X509_STORE_CTX_cleanup(&ctx); 452 453 return (ret); 454 } 455 456 static void 457 set_client_CA_list(STACK_OF(X509_NAME) **ca_list, 458 STACK_OF(X509_NAME) *name_list) 459 { 460 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free); 461 *ca_list = name_list; 462 } 463 464 STACK_OF(X509_NAME) * 465 SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk) 466 { 467 int i; 468 STACK_OF(X509_NAME) *ret; 469 X509_NAME *name; 470 471 ret = sk_X509_NAME_new_null(); 472 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 473 name = X509_NAME_dup(sk_X509_NAME_value(sk, i)); 474 if ((name == NULL) || !sk_X509_NAME_push(ret, name)) { 475 sk_X509_NAME_pop_free(ret, X509_NAME_free); 476 return (NULL); 477 } 478 } 479 return (ret); 480 } 481 482 void 483 SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list) 484 { 485 set_client_CA_list(&(s->internal->client_CA), name_list); 486 } 487 488 void 489 SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) 490 { 491 set_client_CA_list(&(ctx->internal->client_CA), name_list); 492 } 493 494 STACK_OF(X509_NAME) * 495 SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 496 { 497 return (ctx->internal->client_CA); 498 } 499 500 STACK_OF(X509_NAME) * 501 SSL_get_client_CA_list(const SSL *s) 502 { 503 if (s->internal->type == SSL_ST_CONNECT) { 504 /* We are in the client. */ 505 if (((s->version >> 8) == SSL3_VERSION_MAJOR) && 506 (s->s3 != NULL)) 507 return (S3I(s)->tmp.ca_names); 508 else 509 return (NULL); 510 } else { 511 if (s->internal->client_CA != NULL) 512 return (s->internal->client_CA); 513 else 514 return (s->ctx->internal->client_CA); 515 } 516 } 517 518 static int 519 add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x) 520 { 521 X509_NAME *name; 522 523 if (x == NULL) 524 return (0); 525 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL)) 526 return (0); 527 528 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL) 529 return (0); 530 531 if (!sk_X509_NAME_push(*sk, name)) { 532 X509_NAME_free(name); 533 return (0); 534 } 535 return (1); 536 } 537 538 int 539 SSL_add_client_CA(SSL *ssl, X509 *x) 540 { 541 return (add_client_CA(&(ssl->internal->client_CA), x)); 542 } 543 544 int 545 SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x) 546 { 547 return (add_client_CA(&(ctx->internal->client_CA), x)); 548 } 549 550 static int 551 xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 552 { 553 return (X509_NAME_cmp(*a, *b)); 554 } 555 556 /*! 557 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 558 * it doesn't really have anything to do with clients (except that a common use 559 * for a stack of CAs is to send it to the client). Actually, it doesn't have 560 * much to do with CAs, either, since it will load any old cert. 561 * \param file the file containing one or more certs. 562 * \return a ::STACK containing the certs. 563 */ 564 STACK_OF(X509_NAME) * 565 SSL_load_client_CA_file(const char *file) 566 { 567 BIO *in; 568 X509 *x = NULL; 569 X509_NAME *xn = NULL; 570 STACK_OF(X509_NAME) *ret = NULL, *sk; 571 572 sk = sk_X509_NAME_new(xname_cmp); 573 574 in = BIO_new(BIO_s_file_internal()); 575 576 if ((sk == NULL) || (in == NULL)) { 577 SSLerrorx(ERR_R_MALLOC_FAILURE); 578 goto err; 579 } 580 581 if (!BIO_read_filename(in, file)) 582 goto err; 583 584 for (;;) { 585 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 586 break; 587 if (ret == NULL) { 588 ret = sk_X509_NAME_new_null(); 589 if (ret == NULL) { 590 SSLerrorx(ERR_R_MALLOC_FAILURE); 591 goto err; 592 } 593 } 594 if ((xn = X509_get_subject_name(x)) == NULL) goto err; 595 /* check for duplicates */ 596 xn = X509_NAME_dup(xn); 597 if (xn == NULL) 598 goto err; 599 if (sk_X509_NAME_find(sk, xn) >= 0) 600 X509_NAME_free(xn); 601 else { 602 sk_X509_NAME_push(sk, xn); 603 sk_X509_NAME_push(ret, xn); 604 } 605 } 606 607 if (0) { 608 err: 609 sk_X509_NAME_pop_free(ret, X509_NAME_free); 610 ret = NULL; 611 } 612 sk_X509_NAME_free(sk); 613 BIO_free(in); 614 X509_free(x); 615 if (ret != NULL) 616 ERR_clear_error(); 617 618 return (ret); 619 } 620 621 /*! 622 * Add a file of certs to a stack. 623 * \param stack the stack to add to. 624 * \param file the file to add from. All certs in this file that are not 625 * already in the stack will be added. 626 * \return 1 for success, 0 for failure. Note that in the case of failure some 627 * certs may have been added to \c stack. 628 */ 629 630 int 631 SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 632 const char *file) 633 { 634 BIO *in; 635 X509 *x = NULL; 636 X509_NAME *xn = NULL; 637 int ret = 1; 638 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 639 640 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp); 641 642 in = BIO_new(BIO_s_file_internal()); 643 644 if (in == NULL) { 645 SSLerrorx(ERR_R_MALLOC_FAILURE); 646 goto err; 647 } 648 649 if (!BIO_read_filename(in, file)) 650 goto err; 651 652 for (;;) { 653 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 654 break; 655 if ((xn = X509_get_subject_name(x)) == NULL) goto err; 656 xn = X509_NAME_dup(xn); 657 if (xn == NULL) 658 goto err; 659 if (sk_X509_NAME_find(stack, xn) >= 0) 660 X509_NAME_free(xn); 661 else 662 sk_X509_NAME_push(stack, xn); 663 } 664 665 ERR_clear_error(); 666 667 if (0) { 668 err: 669 ret = 0; 670 } 671 BIO_free(in); 672 X509_free(x); 673 674 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp); 675 676 return ret; 677 } 678 679 /*! 680 * Add a directory of certs to a stack. 681 * \param stack the stack to append to. 682 * \param dir the directory to append from. All files in this directory will be 683 * examined as potential certs. Any that are acceptable to 684 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will 685 * be included. 686 * \return 1 for success, 0 for failure. Note that in the case of failure some 687 * certs may have been added to \c stack. 688 */ 689 690 int 691 SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, const char *dir) 692 { 693 DIR *dirp = NULL; 694 char *path = NULL; 695 int ret = 0; 696 697 dirp = opendir(dir); 698 if (dirp) { 699 struct dirent *dp; 700 while ((dp = readdir(dirp)) != NULL) { 701 if (asprintf(&path, "%s/%s", dir, dp->d_name) != -1) { 702 ret = SSL_add_file_cert_subjects_to_stack( 703 stack, path); 704 free(path); 705 } 706 if (!ret) 707 break; 708 } 709 (void) closedir(dirp); 710 } 711 if (!ret) { 712 SYSerror(errno); 713 ERR_asprintf_error_data("opendir ('%s')", dir); 714 SSLerrorx(ERR_R_SYS_LIB); 715 } 716 return ret; 717 } 718