1 /* $OpenBSD: ssl_cert.c,v 1.106 2023/05/26 13:44:05 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_local.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 SSL_CERT * 162 ssl_cert_new(void) 163 { 164 SSL_CERT *ret; 165 166 ret = calloc(1, sizeof(SSL_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 ret->security_cb = ssl_security_default_cb; 174 ret->security_level = OPENSSL_TLS_SECURITY_LEVEL; 175 ret->security_ex_data = NULL; 176 return (ret); 177 } 178 179 SSL_CERT * 180 ssl_cert_dup(SSL_CERT *cert) 181 { 182 SSL_CERT *ret; 183 int i; 184 185 ret = calloc(1, sizeof(SSL_CERT)); 186 if (ret == NULL) { 187 SSLerrorx(ERR_R_MALLOC_FAILURE); 188 return (NULL); 189 } 190 191 /* 192 * same as ret->key = ret->pkeys + (cert->key - cert->pkeys), 193 * if you find that more readable 194 */ 195 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]]; 196 197 ret->valid = cert->valid; 198 ret->mask_k = cert->mask_k; 199 ret->mask_a = cert->mask_a; 200 201 if (cert->dhe_params != NULL) { 202 ret->dhe_params = DHparams_dup(cert->dhe_params); 203 if (ret->dhe_params == NULL) { 204 SSLerrorx(ERR_R_DH_LIB); 205 goto err; 206 } 207 } 208 ret->dhe_params_cb = cert->dhe_params_cb; 209 ret->dhe_params_auto = cert->dhe_params_auto; 210 211 for (i = 0; i < SSL_PKEY_NUM; i++) { 212 if (cert->pkeys[i].x509 != NULL) { 213 ret->pkeys[i].x509 = cert->pkeys[i].x509; 214 X509_up_ref(ret->pkeys[i].x509); 215 } 216 217 if (cert->pkeys[i].privatekey != NULL) { 218 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey; 219 EVP_PKEY_up_ref(ret->pkeys[i].privatekey); 220 switch (i) { 221 /* 222 * If there was anything special to do for 223 * certain types of keys, we'd do it here. 224 * (Nothing at the moment, I think.) 225 */ 226 227 case SSL_PKEY_RSA: 228 /* We have an RSA key. */ 229 break; 230 231 case SSL_PKEY_ECC: 232 /* We have an ECC key */ 233 break; 234 235 case SSL_PKEY_GOST01: 236 /* We have a GOST key */ 237 break; 238 239 default: 240 /* Can't happen. */ 241 SSLerrorx(SSL_R_LIBRARY_BUG); 242 } 243 } 244 245 if (cert->pkeys[i].chain != NULL) { 246 if ((ret->pkeys[i].chain = 247 X509_chain_up_ref(cert->pkeys[i].chain)) == NULL) 248 goto err; 249 } 250 } 251 252 ret->security_cb = cert->security_cb; 253 ret->security_level = cert->security_level; 254 ret->security_ex_data = cert->security_ex_data; 255 256 /* 257 * ret->extra_certs *should* exist, but currently the own certificate 258 * chain is held inside SSL_CTX 259 */ 260 261 ret->references = 1; 262 263 return (ret); 264 265 err: 266 DH_free(ret->dhe_params); 267 268 for (i = 0; i < SSL_PKEY_NUM; i++) { 269 X509_free(ret->pkeys[i].x509); 270 EVP_PKEY_free(ret->pkeys[i].privatekey); 271 sk_X509_pop_free(ret->pkeys[i].chain, X509_free); 272 } 273 free (ret); 274 return NULL; 275 } 276 277 278 void 279 ssl_cert_free(SSL_CERT *c) 280 { 281 int i; 282 283 if (c == NULL) 284 return; 285 286 i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT); 287 if (i > 0) 288 return; 289 290 DH_free(c->dhe_params); 291 292 for (i = 0; i < SSL_PKEY_NUM; i++) { 293 X509_free(c->pkeys[i].x509); 294 EVP_PKEY_free(c->pkeys[i].privatekey); 295 sk_X509_pop_free(c->pkeys[i].chain, X509_free); 296 } 297 298 free(c); 299 } 300 301 SSL_CERT * 302 ssl_get0_cert(SSL_CTX *ctx, SSL *ssl) 303 { 304 if (ssl != NULL) 305 return ssl->cert; 306 307 return ctx->cert; 308 } 309 310 int 311 ssl_cert_set0_chain(SSL_CTX *ctx, SSL *ssl, STACK_OF(X509) *chain) 312 { 313 SSL_CERT *ssl_cert; 314 SSL_CERT_PKEY *cpk; 315 X509 *x509; 316 int ssl_err; 317 int i; 318 319 if ((ssl_cert = ssl_get0_cert(ctx, ssl)) == NULL) 320 return 0; 321 322 if ((cpk = ssl_cert->key) == NULL) 323 return 0; 324 325 for (i = 0; i < sk_X509_num(chain); i++) { 326 x509 = sk_X509_value(chain, i); 327 if (!ssl_security_cert(ctx, ssl, x509, 0, &ssl_err)) { 328 SSLerrorx(ssl_err); 329 return 0; 330 } 331 } 332 333 sk_X509_pop_free(cpk->chain, X509_free); 334 cpk->chain = chain; 335 336 return 1; 337 } 338 339 int 340 ssl_cert_set1_chain(SSL_CTX *ctx, SSL *ssl, STACK_OF(X509) *chain) 341 { 342 STACK_OF(X509) *new_chain = NULL; 343 344 if (chain != NULL) { 345 if ((new_chain = X509_chain_up_ref(chain)) == NULL) 346 return 0; 347 } 348 if (!ssl_cert_set0_chain(ctx, ssl, new_chain)) { 349 sk_X509_pop_free(new_chain, X509_free); 350 return 0; 351 } 352 353 return 1; 354 } 355 356 int 357 ssl_cert_add0_chain_cert(SSL_CTX *ctx, SSL *ssl, X509 *cert) 358 { 359 SSL_CERT *ssl_cert; 360 SSL_CERT_PKEY *cpk; 361 int ssl_err; 362 363 if ((ssl_cert = ssl_get0_cert(ctx, ssl)) == NULL) 364 return 0; 365 366 if ((cpk = ssl_cert->key) == NULL) 367 return 0; 368 369 if (!ssl_security_cert(ctx, ssl, cert, 0, &ssl_err)) { 370 SSLerrorx(ssl_err); 371 return 0; 372 } 373 374 if (cpk->chain == NULL) { 375 if ((cpk->chain = sk_X509_new_null()) == NULL) 376 return 0; 377 } 378 if (!sk_X509_push(cpk->chain, cert)) 379 return 0; 380 381 return 1; 382 } 383 384 int 385 ssl_cert_add1_chain_cert(SSL_CTX *ctx, SSL *ssl, X509 *cert) 386 { 387 if (!ssl_cert_add0_chain_cert(ctx, ssl, cert)) 388 return 0; 389 390 X509_up_ref(cert); 391 392 return 1; 393 } 394 395 int 396 ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *certs) 397 { 398 X509_STORE_CTX *ctx = NULL; 399 X509_VERIFY_PARAM *param; 400 X509 *cert; 401 int ret = 0; 402 403 if (sk_X509_num(certs) < 1) 404 goto err; 405 406 if ((ctx = X509_STORE_CTX_new()) == NULL) 407 goto err; 408 409 cert = sk_X509_value(certs, 0); 410 if (!X509_STORE_CTX_init(ctx, s->ctx->cert_store, cert, certs)) { 411 SSLerror(s, ERR_R_X509_LIB); 412 goto err; 413 } 414 X509_STORE_CTX_set_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s); 415 416 /* 417 * We need to inherit the verify parameters. These can be 418 * determined by the context: if its a server it will verify 419 * SSL client certificates or vice versa. 420 */ 421 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server"); 422 423 param = X509_STORE_CTX_get0_param(ctx); 424 425 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s)); 426 427 /* 428 * Anything non-default in "param" should overwrite anything 429 * in the ctx. 430 */ 431 X509_VERIFY_PARAM_set1(param, s->param); 432 433 if (s->verify_callback) 434 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback); 435 436 if (s->ctx->app_verify_callback != NULL) 437 ret = s->ctx->app_verify_callback(ctx, 438 s->ctx->app_verify_arg); 439 else 440 ret = X509_verify_cert(ctx); 441 442 s->verify_result = X509_STORE_CTX_get_error(ctx); 443 sk_X509_pop_free(s->s3->hs.verified_chain, X509_free); 444 s->s3->hs.verified_chain = NULL; 445 if (X509_STORE_CTX_get0_chain(ctx) != NULL) { 446 s->s3->hs.verified_chain = X509_STORE_CTX_get1_chain(ctx); 447 if (s->s3->hs.verified_chain == NULL) { 448 SSLerrorx(ERR_R_MALLOC_FAILURE); 449 ret = 0; 450 } 451 } 452 453 err: 454 X509_STORE_CTX_free(ctx); 455 456 return (ret); 457 } 458 459 static void 460 set_client_CA_list(STACK_OF(X509_NAME) **ca_list, 461 STACK_OF(X509_NAME) *name_list) 462 { 463 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free); 464 *ca_list = name_list; 465 } 466 467 STACK_OF(X509_NAME) * 468 SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk) 469 { 470 int i; 471 STACK_OF(X509_NAME) *ret; 472 X509_NAME *name = NULL; 473 474 if ((ret = sk_X509_NAME_new_null()) == NULL) 475 goto err; 476 477 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 478 if ((name = X509_NAME_dup(sk_X509_NAME_value(sk, i))) == NULL) 479 goto err; 480 if (!sk_X509_NAME_push(ret, name)) 481 goto err; 482 } 483 return (ret); 484 485 err: 486 X509_NAME_free(name); 487 sk_X509_NAME_pop_free(ret, X509_NAME_free); 488 return NULL; 489 } 490 491 void 492 SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list) 493 { 494 set_client_CA_list(&(s->client_CA), name_list); 495 } 496 497 void 498 SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) 499 { 500 set_client_CA_list(&(ctx->client_CA), name_list); 501 } 502 503 STACK_OF(X509_NAME) * 504 SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 505 { 506 return (ctx->client_CA); 507 } 508 509 STACK_OF(X509_NAME) * 510 SSL_get_client_CA_list(const SSL *s) 511 { 512 if (!s->server) { 513 /* We are in the client. */ 514 if ((s->version >> 8) == SSL3_VERSION_MAJOR) 515 return (s->s3->hs.tls12.ca_names); 516 else 517 return (NULL); 518 } else { 519 if (s->client_CA != NULL) 520 return (s->client_CA); 521 else 522 return (s->ctx->client_CA); 523 } 524 } 525 526 static int 527 add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x) 528 { 529 X509_NAME *name; 530 531 if (x == NULL) 532 return (0); 533 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL)) 534 return (0); 535 536 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL) 537 return (0); 538 539 if (!sk_X509_NAME_push(*sk, name)) { 540 X509_NAME_free(name); 541 return (0); 542 } 543 return (1); 544 } 545 546 int 547 SSL_add_client_CA(SSL *ssl, X509 *x) 548 { 549 return (add_client_CA(&(ssl->client_CA), x)); 550 } 551 552 int 553 SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x) 554 { 555 return (add_client_CA(&(ctx->client_CA), x)); 556 } 557 558 static int 559 xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 560 { 561 return (X509_NAME_cmp(*a, *b)); 562 } 563 564 /*! 565 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 566 * it doesn't really have anything to do with clients (except that a common use 567 * for a stack of CAs is to send it to the client). Actually, it doesn't have 568 * much to do with CAs, either, since it will load any old cert. 569 * \param file the file containing one or more certs. 570 * \return a ::STACK containing the certs. 571 */ 572 STACK_OF(X509_NAME) * 573 SSL_load_client_CA_file(const char *file) 574 { 575 BIO *in; 576 X509 *x = NULL; 577 X509_NAME *xn = NULL; 578 STACK_OF(X509_NAME) *ret = NULL, *sk; 579 580 sk = sk_X509_NAME_new(xname_cmp); 581 582 in = BIO_new(BIO_s_file()); 583 584 if ((sk == NULL) || (in == NULL)) { 585 SSLerrorx(ERR_R_MALLOC_FAILURE); 586 goto err; 587 } 588 589 if (!BIO_read_filename(in, file)) 590 goto err; 591 592 for (;;) { 593 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 594 break; 595 if (ret == NULL) { 596 ret = sk_X509_NAME_new_null(); 597 if (ret == NULL) { 598 SSLerrorx(ERR_R_MALLOC_FAILURE); 599 goto err; 600 } 601 } 602 if ((xn = X509_get_subject_name(x)) == NULL) 603 goto err; 604 /* check for duplicates */ 605 xn = X509_NAME_dup(xn); 606 if (xn == NULL) 607 goto err; 608 if (sk_X509_NAME_find(sk, xn) >= 0) 609 X509_NAME_free(xn); 610 else { 611 if (!sk_X509_NAME_push(sk, xn)) 612 goto err; 613 if (!sk_X509_NAME_push(ret, xn)) 614 goto err; 615 } 616 } 617 618 if (0) { 619 err: 620 sk_X509_NAME_pop_free(ret, X509_NAME_free); 621 ret = NULL; 622 } 623 sk_X509_NAME_free(sk); 624 BIO_free(in); 625 X509_free(x); 626 if (ret != NULL) 627 ERR_clear_error(); 628 629 return (ret); 630 } 631 632 /*! 633 * Add a file of certs to a stack. 634 * \param stack the stack to add to. 635 * \param file the file to add from. All certs in this file that are not 636 * already in the stack will be added. 637 * \return 1 for success, 0 for failure. Note that in the case of failure some 638 * certs may have been added to \c stack. 639 */ 640 641 int 642 SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 643 const char *file) 644 { 645 BIO *in; 646 X509 *x = NULL; 647 X509_NAME *xn = NULL; 648 int ret = 1; 649 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 650 651 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp); 652 653 in = BIO_new(BIO_s_file()); 654 655 if (in == NULL) { 656 SSLerrorx(ERR_R_MALLOC_FAILURE); 657 goto err; 658 } 659 660 if (!BIO_read_filename(in, file)) 661 goto err; 662 663 for (;;) { 664 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 665 break; 666 if ((xn = X509_get_subject_name(x)) == NULL) 667 goto err; 668 xn = X509_NAME_dup(xn); 669 if (xn == NULL) 670 goto err; 671 if (sk_X509_NAME_find(stack, xn) >= 0) 672 X509_NAME_free(xn); 673 else 674 if (!sk_X509_NAME_push(stack, xn)) 675 goto err; 676 } 677 678 ERR_clear_error(); 679 680 if (0) { 681 err: 682 ret = 0; 683 } 684 BIO_free(in); 685 X509_free(x); 686 687 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp); 688 689 return ret; 690 } 691 692 /*! 693 * Add a directory of certs to a stack. 694 * \param stack the stack to append to. 695 * \param dir the directory to append from. All files in this directory will be 696 * examined as potential certs. Any that are acceptable to 697 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will 698 * be included. 699 * \return 1 for success, 0 for failure. Note that in the case of failure some 700 * certs may have been added to \c stack. 701 */ 702 703 int 704 SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, const char *dir) 705 { 706 DIR *dirp = NULL; 707 char *path = NULL; 708 int ret = 0; 709 710 dirp = opendir(dir); 711 if (dirp) { 712 struct dirent *dp; 713 while ((dp = readdir(dirp)) != NULL) { 714 if (asprintf(&path, "%s/%s", dir, dp->d_name) != -1) { 715 ret = SSL_add_file_cert_subjects_to_stack( 716 stack, path); 717 free(path); 718 } 719 if (!ret) 720 break; 721 } 722 (void) closedir(dirp); 723 } 724 if (!ret) { 725 SYSerror(errno); 726 ERR_asprintf_error_data("opendir ('%s')", dir); 727 SSLerrorx(ERR_R_SYS_LIB); 728 } 729 return ret; 730 } 731