1 /* $OpenBSD: ssl_cert.c,v 1.107 2023/07/08 16:40:13 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_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 LSSL_ALIAS(SSL_get_ex_data_X509_STORE_CTX_idx); 161 162 SSL_CERT * 163 ssl_cert_new(void) 164 { 165 SSL_CERT *ret; 166 167 ret = calloc(1, sizeof(SSL_CERT)); 168 if (ret == NULL) { 169 SSLerrorx(ERR_R_MALLOC_FAILURE); 170 return (NULL); 171 } 172 ret->key = &(ret->pkeys[SSL_PKEY_RSA]); 173 ret->references = 1; 174 ret->security_cb = ssl_security_default_cb; 175 ret->security_level = OPENSSL_TLS_SECURITY_LEVEL; 176 ret->security_ex_data = NULL; 177 return (ret); 178 } 179 180 SSL_CERT * 181 ssl_cert_dup(SSL_CERT *cert) 182 { 183 SSL_CERT *ret; 184 int i; 185 186 ret = calloc(1, sizeof(SSL_CERT)); 187 if (ret == NULL) { 188 SSLerrorx(ERR_R_MALLOC_FAILURE); 189 return (NULL); 190 } 191 192 /* 193 * same as ret->key = ret->pkeys + (cert->key - cert->pkeys), 194 * if you find that more readable 195 */ 196 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]]; 197 198 ret->valid = cert->valid; 199 ret->mask_k = cert->mask_k; 200 ret->mask_a = cert->mask_a; 201 202 if (cert->dhe_params != NULL) { 203 ret->dhe_params = DHparams_dup(cert->dhe_params); 204 if (ret->dhe_params == NULL) { 205 SSLerrorx(ERR_R_DH_LIB); 206 goto err; 207 } 208 } 209 ret->dhe_params_cb = cert->dhe_params_cb; 210 ret->dhe_params_auto = cert->dhe_params_auto; 211 212 for (i = 0; i < SSL_PKEY_NUM; i++) { 213 if (cert->pkeys[i].x509 != NULL) { 214 ret->pkeys[i].x509 = cert->pkeys[i].x509; 215 X509_up_ref(ret->pkeys[i].x509); 216 } 217 218 if (cert->pkeys[i].privatekey != NULL) { 219 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey; 220 EVP_PKEY_up_ref(ret->pkeys[i].privatekey); 221 switch (i) { 222 /* 223 * If there was anything special to do for 224 * certain types of keys, we'd do it here. 225 * (Nothing at the moment, I think.) 226 */ 227 228 case SSL_PKEY_RSA: 229 /* We have an RSA key. */ 230 break; 231 232 case SSL_PKEY_ECC: 233 /* We have an ECC key */ 234 break; 235 236 case SSL_PKEY_GOST01: 237 /* We have a GOST key */ 238 break; 239 240 default: 241 /* Can't happen. */ 242 SSLerrorx(SSL_R_LIBRARY_BUG); 243 } 244 } 245 246 if (cert->pkeys[i].chain != NULL) { 247 if ((ret->pkeys[i].chain = 248 X509_chain_up_ref(cert->pkeys[i].chain)) == NULL) 249 goto err; 250 } 251 } 252 253 ret->security_cb = cert->security_cb; 254 ret->security_level = cert->security_level; 255 ret->security_ex_data = cert->security_ex_data; 256 257 /* 258 * ret->extra_certs *should* exist, but currently the own certificate 259 * chain is held inside SSL_CTX 260 */ 261 262 ret->references = 1; 263 264 return (ret); 265 266 err: 267 DH_free(ret->dhe_params); 268 269 for (i = 0; i < SSL_PKEY_NUM; i++) { 270 X509_free(ret->pkeys[i].x509); 271 EVP_PKEY_free(ret->pkeys[i].privatekey); 272 sk_X509_pop_free(ret->pkeys[i].chain, X509_free); 273 } 274 free (ret); 275 return NULL; 276 } 277 278 279 void 280 ssl_cert_free(SSL_CERT *c) 281 { 282 int i; 283 284 if (c == NULL) 285 return; 286 287 i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT); 288 if (i > 0) 289 return; 290 291 DH_free(c->dhe_params); 292 293 for (i = 0; i < SSL_PKEY_NUM; i++) { 294 X509_free(c->pkeys[i].x509); 295 EVP_PKEY_free(c->pkeys[i].privatekey); 296 sk_X509_pop_free(c->pkeys[i].chain, X509_free); 297 } 298 299 free(c); 300 } 301 302 SSL_CERT * 303 ssl_get0_cert(SSL_CTX *ctx, SSL *ssl) 304 { 305 if (ssl != NULL) 306 return ssl->cert; 307 308 return ctx->cert; 309 } 310 311 int 312 ssl_cert_set0_chain(SSL_CTX *ctx, SSL *ssl, STACK_OF(X509) *chain) 313 { 314 SSL_CERT *ssl_cert; 315 SSL_CERT_PKEY *cpk; 316 X509 *x509; 317 int ssl_err; 318 int i; 319 320 if ((ssl_cert = ssl_get0_cert(ctx, ssl)) == NULL) 321 return 0; 322 323 if ((cpk = ssl_cert->key) == NULL) 324 return 0; 325 326 for (i = 0; i < sk_X509_num(chain); i++) { 327 x509 = sk_X509_value(chain, i); 328 if (!ssl_security_cert(ctx, ssl, x509, 0, &ssl_err)) { 329 SSLerrorx(ssl_err); 330 return 0; 331 } 332 } 333 334 sk_X509_pop_free(cpk->chain, X509_free); 335 cpk->chain = chain; 336 337 return 1; 338 } 339 340 int 341 ssl_cert_set1_chain(SSL_CTX *ctx, SSL *ssl, STACK_OF(X509) *chain) 342 { 343 STACK_OF(X509) *new_chain = NULL; 344 345 if (chain != NULL) { 346 if ((new_chain = X509_chain_up_ref(chain)) == NULL) 347 return 0; 348 } 349 if (!ssl_cert_set0_chain(ctx, ssl, new_chain)) { 350 sk_X509_pop_free(new_chain, X509_free); 351 return 0; 352 } 353 354 return 1; 355 } 356 357 int 358 ssl_cert_add0_chain_cert(SSL_CTX *ctx, SSL *ssl, X509 *cert) 359 { 360 SSL_CERT *ssl_cert; 361 SSL_CERT_PKEY *cpk; 362 int ssl_err; 363 364 if ((ssl_cert = ssl_get0_cert(ctx, ssl)) == NULL) 365 return 0; 366 367 if ((cpk = ssl_cert->key) == NULL) 368 return 0; 369 370 if (!ssl_security_cert(ctx, ssl, cert, 0, &ssl_err)) { 371 SSLerrorx(ssl_err); 372 return 0; 373 } 374 375 if (cpk->chain == NULL) { 376 if ((cpk->chain = sk_X509_new_null()) == NULL) 377 return 0; 378 } 379 if (!sk_X509_push(cpk->chain, cert)) 380 return 0; 381 382 return 1; 383 } 384 385 int 386 ssl_cert_add1_chain_cert(SSL_CTX *ctx, SSL *ssl, X509 *cert) 387 { 388 if (!ssl_cert_add0_chain_cert(ctx, ssl, cert)) 389 return 0; 390 391 X509_up_ref(cert); 392 393 return 1; 394 } 395 396 int 397 ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *certs) 398 { 399 X509_STORE_CTX *ctx = NULL; 400 X509_VERIFY_PARAM *param; 401 X509 *cert; 402 int ret = 0; 403 404 if (sk_X509_num(certs) < 1) 405 goto err; 406 407 if ((ctx = X509_STORE_CTX_new()) == NULL) 408 goto err; 409 410 cert = sk_X509_value(certs, 0); 411 if (!X509_STORE_CTX_init(ctx, s->ctx->cert_store, cert, certs)) { 412 SSLerror(s, ERR_R_X509_LIB); 413 goto err; 414 } 415 X509_STORE_CTX_set_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s); 416 417 /* 418 * We need to inherit the verify parameters. These can be 419 * determined by the context: if its a server it will verify 420 * SSL client certificates or vice versa. 421 */ 422 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server"); 423 424 param = X509_STORE_CTX_get0_param(ctx); 425 426 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s)); 427 428 /* 429 * Anything non-default in "param" should overwrite anything 430 * in the ctx. 431 */ 432 X509_VERIFY_PARAM_set1(param, s->param); 433 434 if (s->verify_callback) 435 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback); 436 437 if (s->ctx->app_verify_callback != NULL) 438 ret = s->ctx->app_verify_callback(ctx, 439 s->ctx->app_verify_arg); 440 else 441 ret = X509_verify_cert(ctx); 442 443 s->verify_result = X509_STORE_CTX_get_error(ctx); 444 sk_X509_pop_free(s->s3->hs.verified_chain, X509_free); 445 s->s3->hs.verified_chain = NULL; 446 if (X509_STORE_CTX_get0_chain(ctx) != NULL) { 447 s->s3->hs.verified_chain = X509_STORE_CTX_get1_chain(ctx); 448 if (s->s3->hs.verified_chain == NULL) { 449 SSLerrorx(ERR_R_MALLOC_FAILURE); 450 ret = 0; 451 } 452 } 453 454 err: 455 X509_STORE_CTX_free(ctx); 456 457 return (ret); 458 } 459 460 static void 461 set_client_CA_list(STACK_OF(X509_NAME) **ca_list, 462 STACK_OF(X509_NAME) *name_list) 463 { 464 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free); 465 *ca_list = name_list; 466 } 467 468 STACK_OF(X509_NAME) * 469 SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk) 470 { 471 int i; 472 STACK_OF(X509_NAME) *ret; 473 X509_NAME *name = NULL; 474 475 if ((ret = sk_X509_NAME_new_null()) == NULL) 476 goto err; 477 478 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 479 if ((name = X509_NAME_dup(sk_X509_NAME_value(sk, i))) == NULL) 480 goto err; 481 if (!sk_X509_NAME_push(ret, name)) 482 goto err; 483 } 484 return (ret); 485 486 err: 487 X509_NAME_free(name); 488 sk_X509_NAME_pop_free(ret, X509_NAME_free); 489 return NULL; 490 } 491 LSSL_ALIAS(SSL_dup_CA_list); 492 493 void 494 SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list) 495 { 496 set_client_CA_list(&(s->client_CA), name_list); 497 } 498 LSSL_ALIAS(SSL_set_client_CA_list); 499 500 void 501 SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) 502 { 503 set_client_CA_list(&(ctx->client_CA), name_list); 504 } 505 LSSL_ALIAS(SSL_CTX_set_client_CA_list); 506 507 STACK_OF(X509_NAME) * 508 SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 509 { 510 return (ctx->client_CA); 511 } 512 LSSL_ALIAS(SSL_CTX_get_client_CA_list); 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 (s->s3->hs.tls12.ca_names); 521 else 522 return (NULL); 523 } else { 524 if (s->client_CA != NULL) 525 return (s->client_CA); 526 else 527 return (s->ctx->client_CA); 528 } 529 } 530 LSSL_ALIAS(SSL_get_client_CA_list); 531 532 static int 533 add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x) 534 { 535 X509_NAME *name; 536 537 if (x == NULL) 538 return (0); 539 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL)) 540 return (0); 541 542 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL) 543 return (0); 544 545 if (!sk_X509_NAME_push(*sk, name)) { 546 X509_NAME_free(name); 547 return (0); 548 } 549 return (1); 550 } 551 552 int 553 SSL_add_client_CA(SSL *ssl, X509 *x) 554 { 555 return (add_client_CA(&(ssl->client_CA), x)); 556 } 557 LSSL_ALIAS(SSL_add_client_CA); 558 559 int 560 SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x) 561 { 562 return (add_client_CA(&(ctx->client_CA), x)); 563 } 564 LSSL_ALIAS(SSL_CTX_add_client_CA); 565 566 static int 567 xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 568 { 569 return (X509_NAME_cmp(*a, *b)); 570 } 571 572 /*! 573 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 574 * it doesn't really have anything to do with clients (except that a common use 575 * for a stack of CAs is to send it to the client). Actually, it doesn't have 576 * much to do with CAs, either, since it will load any old cert. 577 * \param file the file containing one or more certs. 578 * \return a ::STACK containing the certs. 579 */ 580 STACK_OF(X509_NAME) * 581 SSL_load_client_CA_file(const char *file) 582 { 583 BIO *in; 584 X509 *x = NULL; 585 X509_NAME *xn = NULL; 586 STACK_OF(X509_NAME) *ret = NULL, *sk; 587 588 sk = sk_X509_NAME_new(xname_cmp); 589 590 in = BIO_new(BIO_s_file()); 591 592 if ((sk == NULL) || (in == NULL)) { 593 SSLerrorx(ERR_R_MALLOC_FAILURE); 594 goto err; 595 } 596 597 if (!BIO_read_filename(in, file)) 598 goto err; 599 600 for (;;) { 601 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 602 break; 603 if (ret == NULL) { 604 ret = sk_X509_NAME_new_null(); 605 if (ret == NULL) { 606 SSLerrorx(ERR_R_MALLOC_FAILURE); 607 goto err; 608 } 609 } 610 if ((xn = X509_get_subject_name(x)) == NULL) 611 goto err; 612 /* check for duplicates */ 613 xn = X509_NAME_dup(xn); 614 if (xn == NULL) 615 goto err; 616 if (sk_X509_NAME_find(sk, xn) >= 0) 617 X509_NAME_free(xn); 618 else { 619 if (!sk_X509_NAME_push(sk, xn)) 620 goto err; 621 if (!sk_X509_NAME_push(ret, xn)) 622 goto err; 623 } 624 } 625 626 if (0) { 627 err: 628 sk_X509_NAME_pop_free(ret, X509_NAME_free); 629 ret = NULL; 630 } 631 sk_X509_NAME_free(sk); 632 BIO_free(in); 633 X509_free(x); 634 if (ret != NULL) 635 ERR_clear_error(); 636 637 return (ret); 638 } 639 LSSL_ALIAS(SSL_load_client_CA_file); 640 641 /*! 642 * Add a file of certs to a stack. 643 * \param stack the stack to add to. 644 * \param file the file to add from. All certs in this file that are not 645 * already in the stack will be added. 646 * \return 1 for success, 0 for failure. Note that in the case of failure some 647 * certs may have been added to \c stack. 648 */ 649 650 int 651 SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 652 const char *file) 653 { 654 BIO *in; 655 X509 *x = NULL; 656 X509_NAME *xn = NULL; 657 int ret = 1; 658 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 659 660 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp); 661 662 in = BIO_new(BIO_s_file()); 663 664 if (in == NULL) { 665 SSLerrorx(ERR_R_MALLOC_FAILURE); 666 goto err; 667 } 668 669 if (!BIO_read_filename(in, file)) 670 goto err; 671 672 for (;;) { 673 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 674 break; 675 if ((xn = X509_get_subject_name(x)) == NULL) 676 goto err; 677 xn = X509_NAME_dup(xn); 678 if (xn == NULL) 679 goto err; 680 if (sk_X509_NAME_find(stack, xn) >= 0) 681 X509_NAME_free(xn); 682 else 683 if (!sk_X509_NAME_push(stack, xn)) 684 goto err; 685 } 686 687 ERR_clear_error(); 688 689 if (0) { 690 err: 691 ret = 0; 692 } 693 BIO_free(in); 694 X509_free(x); 695 696 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp); 697 698 return ret; 699 } 700 LSSL_ALIAS(SSL_add_file_cert_subjects_to_stack); 701 702 /*! 703 * Add a directory of certs to a stack. 704 * \param stack the stack to append to. 705 * \param dir the directory to append from. All files in this directory will be 706 * examined as potential certs. Any that are acceptable to 707 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will 708 * be included. 709 * \return 1 for success, 0 for failure. Note that in the case of failure some 710 * certs may have been added to \c stack. 711 */ 712 713 int 714 SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, const char *dir) 715 { 716 DIR *dirp = NULL; 717 char *path = NULL; 718 int ret = 0; 719 720 dirp = opendir(dir); 721 if (dirp) { 722 struct dirent *dp; 723 while ((dp = readdir(dirp)) != NULL) { 724 if (asprintf(&path, "%s/%s", dir, dp->d_name) != -1) { 725 ret = SSL_add_file_cert_subjects_to_stack( 726 stack, path); 727 free(path); 728 } 729 if (!ret) 730 break; 731 } 732 (void) closedir(dirp); 733 } 734 if (!ret) { 735 SYSerror(errno); 736 ERR_asprintf_error_data("opendir ('%s')", dir); 737 SSLerrorx(ERR_R_SYS_LIB); 738 } 739 return ret; 740 } 741 LSSL_ALIAS(SSL_add_dir_cert_subjects_to_stack); 742