1 /* $OpenBSD: ssl_cert.c,v 1.88 2021/11/29 18:36:27 tb 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 EVP_PKEY_up_ref(ret->pkeys[i].privatekey); 233 switch (i) { 234 /* 235 * If there was anything special to do for 236 * certain types of keys, we'd do it here. 237 * (Nothing at the moment, I think.) 238 */ 239 240 case SSL_PKEY_RSA: 241 /* We have an RSA key. */ 242 break; 243 244 case SSL_PKEY_ECC: 245 /* We have an ECC key */ 246 break; 247 248 case SSL_PKEY_GOST01: 249 /* We have a GOST key */ 250 break; 251 252 default: 253 /* Can't happen. */ 254 SSLerrorx(SSL_R_LIBRARY_BUG); 255 } 256 } 257 258 if (cert->pkeys[i].chain != NULL) { 259 if ((ret->pkeys[i].chain = 260 X509_chain_up_ref(cert->pkeys[i].chain)) == NULL) 261 goto err; 262 } 263 } 264 265 /* 266 * ret->extra_certs *should* exist, but currently the own certificate 267 * chain is held inside SSL_CTX 268 */ 269 270 ret->references = 1; 271 272 return (ret); 273 274 err: 275 DH_free(ret->dh_tmp); 276 277 for (i = 0; i < SSL_PKEY_NUM; i++) { 278 X509_free(ret->pkeys[i].x509); 279 EVP_PKEY_free(ret->pkeys[i].privatekey); 280 sk_X509_pop_free(ret->pkeys[i].chain, X509_free); 281 } 282 free (ret); 283 return NULL; 284 } 285 286 287 void 288 ssl_cert_free(CERT *c) 289 { 290 int i; 291 292 if (c == NULL) 293 return; 294 295 i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT); 296 if (i > 0) 297 return; 298 299 DH_free(c->dh_tmp); 300 301 for (i = 0; i < SSL_PKEY_NUM; i++) { 302 X509_free(c->pkeys[i].x509); 303 EVP_PKEY_free(c->pkeys[i].privatekey); 304 sk_X509_pop_free(c->pkeys[i].chain, X509_free); 305 } 306 307 free(c); 308 } 309 310 int 311 ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain) 312 { 313 if (c->key == NULL) 314 return 0; 315 316 sk_X509_pop_free(c->key->chain, X509_free); 317 c->key->chain = chain; 318 319 return 1; 320 } 321 322 int 323 ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain) 324 { 325 STACK_OF(X509) *new_chain = NULL; 326 327 if (chain != NULL) { 328 if ((new_chain = X509_chain_up_ref(chain)) == NULL) 329 return 0; 330 } 331 if (!ssl_cert_set0_chain(c, new_chain)) { 332 sk_X509_pop_free(new_chain, X509_free); 333 return 0; 334 } 335 336 return 1; 337 } 338 339 int 340 ssl_cert_add0_chain_cert(CERT *c, X509 *cert) 341 { 342 if (c->key == NULL) 343 return 0; 344 345 if (c->key->chain == NULL) { 346 if ((c->key->chain = sk_X509_new_null()) == NULL) 347 return 0; 348 } 349 if (!sk_X509_push(c->key->chain, cert)) 350 return 0; 351 352 return 1; 353 } 354 355 int 356 ssl_cert_add1_chain_cert(CERT *c, X509 *cert) 357 { 358 if (!ssl_cert_add0_chain_cert(c, cert)) 359 return 0; 360 361 X509_up_ref(cert); 362 363 return 1; 364 } 365 366 SESS_CERT * 367 ssl_sess_cert_new(void) 368 { 369 SESS_CERT *ret; 370 371 ret = calloc(1, sizeof *ret); 372 if (ret == NULL) { 373 SSLerrorx(ERR_R_MALLOC_FAILURE); 374 return NULL; 375 } 376 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA]); 377 ret->references = 1; 378 379 return ret; 380 } 381 382 void 383 ssl_sess_cert_free(SESS_CERT *sc) 384 { 385 int i; 386 387 if (sc == NULL) 388 return; 389 390 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT); 391 if (i > 0) 392 return; 393 394 sk_X509_pop_free(sc->cert_chain, X509_free); 395 for (i = 0; i < SSL_PKEY_NUM; i++) 396 X509_free(sc->peer_pkeys[i].x509); 397 398 DH_free(sc->peer_dh_tmp); 399 EC_KEY_free(sc->peer_ecdh_tmp); 400 free(sc->peer_x25519_tmp); 401 402 free(sc); 403 } 404 405 int 406 ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk) 407 { 408 X509_STORE_CTX *ctx = NULL; 409 X509 *x; 410 int ret = 0; 411 412 if ((sk == NULL) || (sk_X509_num(sk) == 0)) 413 goto err; 414 415 if ((ctx = X509_STORE_CTX_new()) == NULL) 416 goto err; 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 goto err; 422 } 423 X509_STORE_CTX_set_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s); 424 425 /* 426 * We need to inherit the verify parameters. These can be 427 * determined by the context: if its a server it will verify 428 * SSL client certificates or vice versa. 429 */ 430 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server"); 431 432 /* 433 * Anything non-default in "param" should overwrite anything 434 * in the ctx. 435 */ 436 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(ctx), s->param); 437 438 if (s->internal->verify_callback) 439 X509_STORE_CTX_set_verify_cb(ctx, s->internal->verify_callback); 440 441 if (s->ctx->internal->app_verify_callback != NULL) 442 ret = s->ctx->internal->app_verify_callback(ctx, 443 s->ctx->internal->app_verify_arg); 444 else 445 ret = X509_verify_cert(ctx); 446 447 s->verify_result = X509_STORE_CTX_get_error(ctx); 448 sk_X509_pop_free(s->internal->verified_chain, X509_free); 449 s->internal->verified_chain = NULL; 450 if (X509_STORE_CTX_get0_chain(ctx) != NULL) { 451 s->internal->verified_chain = X509_STORE_CTX_get1_chain(ctx); 452 if (s->internal->verified_chain == NULL) { 453 SSLerrorx(ERR_R_MALLOC_FAILURE); 454 ret = 0; 455 } 456 } 457 458 err: 459 X509_STORE_CTX_free(ctx); 460 461 return (ret); 462 } 463 464 static void 465 set_client_CA_list(STACK_OF(X509_NAME) **ca_list, 466 STACK_OF(X509_NAME) *name_list) 467 { 468 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free); 469 *ca_list = name_list; 470 } 471 472 STACK_OF(X509_NAME) * 473 SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk) 474 { 475 int i; 476 STACK_OF(X509_NAME) *ret; 477 X509_NAME *name = NULL; 478 479 if ((ret = sk_X509_NAME_new_null()) == NULL) 480 goto err; 481 482 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 483 if ((name = X509_NAME_dup(sk_X509_NAME_value(sk, i))) == NULL) 484 goto err; 485 if (!sk_X509_NAME_push(ret, name)) 486 goto err; 487 } 488 return (ret); 489 490 err: 491 X509_NAME_free(name); 492 sk_X509_NAME_pop_free(ret, X509_NAME_free); 493 return NULL; 494 } 495 496 void 497 SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list) 498 { 499 set_client_CA_list(&(s->internal->client_CA), name_list); 500 } 501 502 void 503 SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) 504 { 505 set_client_CA_list(&(ctx->internal->client_CA), name_list); 506 } 507 508 STACK_OF(X509_NAME) * 509 SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 510 { 511 return (ctx->internal->client_CA); 512 } 513 514 STACK_OF(X509_NAME) * 515 SSL_get_client_CA_list(const SSL *s) 516 { 517 if (!s->server) { 518 /* We are in the client. */ 519 if ((s->version >> 8) == SSL3_VERSION_MAJOR) 520 return (S3I(s)->hs.tls12.ca_names); 521 else 522 return (NULL); 523 } else { 524 if (s->internal->client_CA != NULL) 525 return (s->internal->client_CA); 526 else 527 return (s->ctx->internal->client_CA); 528 } 529 } 530 531 static int 532 add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x) 533 { 534 X509_NAME *name; 535 536 if (x == NULL) 537 return (0); 538 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL)) 539 return (0); 540 541 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL) 542 return (0); 543 544 if (!sk_X509_NAME_push(*sk, name)) { 545 X509_NAME_free(name); 546 return (0); 547 } 548 return (1); 549 } 550 551 int 552 SSL_add_client_CA(SSL *ssl, X509 *x) 553 { 554 return (add_client_CA(&(ssl->internal->client_CA), x)); 555 } 556 557 int 558 SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x) 559 { 560 return (add_client_CA(&(ctx->internal->client_CA), x)); 561 } 562 563 static int 564 xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 565 { 566 return (X509_NAME_cmp(*a, *b)); 567 } 568 569 /*! 570 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 571 * it doesn't really have anything to do with clients (except that a common use 572 * for a stack of CAs is to send it to the client). Actually, it doesn't have 573 * much to do with CAs, either, since it will load any old cert. 574 * \param file the file containing one or more certs. 575 * \return a ::STACK containing the certs. 576 */ 577 STACK_OF(X509_NAME) * 578 SSL_load_client_CA_file(const char *file) 579 { 580 BIO *in; 581 X509 *x = NULL; 582 X509_NAME *xn = NULL; 583 STACK_OF(X509_NAME) *ret = NULL, *sk; 584 585 sk = sk_X509_NAME_new(xname_cmp); 586 587 in = BIO_new(BIO_s_file()); 588 589 if ((sk == NULL) || (in == NULL)) { 590 SSLerrorx(ERR_R_MALLOC_FAILURE); 591 goto err; 592 } 593 594 if (!BIO_read_filename(in, file)) 595 goto err; 596 597 for (;;) { 598 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 599 break; 600 if (ret == NULL) { 601 ret = sk_X509_NAME_new_null(); 602 if (ret == NULL) { 603 SSLerrorx(ERR_R_MALLOC_FAILURE); 604 goto err; 605 } 606 } 607 if ((xn = X509_get_subject_name(x)) == NULL) 608 goto err; 609 /* check for duplicates */ 610 xn = X509_NAME_dup(xn); 611 if (xn == NULL) 612 goto err; 613 if (sk_X509_NAME_find(sk, xn) >= 0) 614 X509_NAME_free(xn); 615 else { 616 sk_X509_NAME_push(sk, xn); 617 sk_X509_NAME_push(ret, xn); 618 } 619 } 620 621 if (0) { 622 err: 623 sk_X509_NAME_pop_free(ret, X509_NAME_free); 624 ret = NULL; 625 } 626 sk_X509_NAME_free(sk); 627 BIO_free(in); 628 X509_free(x); 629 if (ret != NULL) 630 ERR_clear_error(); 631 632 return (ret); 633 } 634 635 /*! 636 * Add a file of certs to a stack. 637 * \param stack the stack to add to. 638 * \param file the file to add from. All certs in this file that are not 639 * already in the stack will be added. 640 * \return 1 for success, 0 for failure. Note that in the case of failure some 641 * certs may have been added to \c stack. 642 */ 643 644 int 645 SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 646 const char *file) 647 { 648 BIO *in; 649 X509 *x = NULL; 650 X509_NAME *xn = NULL; 651 int ret = 1; 652 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 653 654 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp); 655 656 in = BIO_new(BIO_s_file()); 657 658 if (in == NULL) { 659 SSLerrorx(ERR_R_MALLOC_FAILURE); 660 goto err; 661 } 662 663 if (!BIO_read_filename(in, file)) 664 goto err; 665 666 for (;;) { 667 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 668 break; 669 if ((xn = X509_get_subject_name(x)) == NULL) 670 goto err; 671 xn = X509_NAME_dup(xn); 672 if (xn == NULL) 673 goto err; 674 if (sk_X509_NAME_find(stack, xn) >= 0) 675 X509_NAME_free(xn); 676 else 677 sk_X509_NAME_push(stack, xn); 678 } 679 680 ERR_clear_error(); 681 682 if (0) { 683 err: 684 ret = 0; 685 } 686 BIO_free(in); 687 X509_free(x); 688 689 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp); 690 691 return ret; 692 } 693 694 /*! 695 * Add a directory of certs to a stack. 696 * \param stack the stack to append to. 697 * \param dir the directory to append from. All files in this directory will be 698 * examined as potential certs. Any that are acceptable to 699 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will 700 * be included. 701 * \return 1 for success, 0 for failure. Note that in the case of failure some 702 * certs may have been added to \c stack. 703 */ 704 705 int 706 SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, const char *dir) 707 { 708 DIR *dirp = NULL; 709 char *path = NULL; 710 int ret = 0; 711 712 dirp = opendir(dir); 713 if (dirp) { 714 struct dirent *dp; 715 while ((dp = readdir(dirp)) != NULL) { 716 if (asprintf(&path, "%s/%s", dir, dp->d_name) != -1) { 717 ret = SSL_add_file_cert_subjects_to_stack( 718 stack, path); 719 free(path); 720 } 721 if (!ret) 722 break; 723 } 724 (void) closedir(dirp); 725 } 726 if (!ret) { 727 SYSerror(errno); 728 ERR_asprintf_error_data("opendir ('%s')", dir); 729 SSLerrorx(ERR_R_SYS_LIB); 730 } 731 return ret; 732 } 733