1 /* $OpenBSD: ssl_cert.c,v 1.108 2024/02/03 15:58:33 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 default: 237 /* Can't happen. */ 238 SSLerrorx(SSL_R_LIBRARY_BUG); 239 } 240 } 241 242 if (cert->pkeys[i].chain != NULL) { 243 if ((ret->pkeys[i].chain = 244 X509_chain_up_ref(cert->pkeys[i].chain)) == NULL) 245 goto err; 246 } 247 } 248 249 ret->security_cb = cert->security_cb; 250 ret->security_level = cert->security_level; 251 ret->security_ex_data = cert->security_ex_data; 252 253 /* 254 * ret->extra_certs *should* exist, but currently the own certificate 255 * chain is held inside SSL_CTX 256 */ 257 258 ret->references = 1; 259 260 return (ret); 261 262 err: 263 DH_free(ret->dhe_params); 264 265 for (i = 0; i < SSL_PKEY_NUM; i++) { 266 X509_free(ret->pkeys[i].x509); 267 EVP_PKEY_free(ret->pkeys[i].privatekey); 268 sk_X509_pop_free(ret->pkeys[i].chain, X509_free); 269 } 270 free (ret); 271 return NULL; 272 } 273 274 275 void 276 ssl_cert_free(SSL_CERT *c) 277 { 278 int i; 279 280 if (c == NULL) 281 return; 282 283 i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT); 284 if (i > 0) 285 return; 286 287 DH_free(c->dhe_params); 288 289 for (i = 0; i < SSL_PKEY_NUM; i++) { 290 X509_free(c->pkeys[i].x509); 291 EVP_PKEY_free(c->pkeys[i].privatekey); 292 sk_X509_pop_free(c->pkeys[i].chain, X509_free); 293 } 294 295 free(c); 296 } 297 298 SSL_CERT * 299 ssl_get0_cert(SSL_CTX *ctx, SSL *ssl) 300 { 301 if (ssl != NULL) 302 return ssl->cert; 303 304 return ctx->cert; 305 } 306 307 int 308 ssl_cert_set0_chain(SSL_CTX *ctx, SSL *ssl, STACK_OF(X509) *chain) 309 { 310 SSL_CERT *ssl_cert; 311 SSL_CERT_PKEY *cpk; 312 X509 *x509; 313 int ssl_err; 314 int i; 315 316 if ((ssl_cert = ssl_get0_cert(ctx, ssl)) == NULL) 317 return 0; 318 319 if ((cpk = ssl_cert->key) == NULL) 320 return 0; 321 322 for (i = 0; i < sk_X509_num(chain); i++) { 323 x509 = sk_X509_value(chain, i); 324 if (!ssl_security_cert(ctx, ssl, x509, 0, &ssl_err)) { 325 SSLerrorx(ssl_err); 326 return 0; 327 } 328 } 329 330 sk_X509_pop_free(cpk->chain, X509_free); 331 cpk->chain = chain; 332 333 return 1; 334 } 335 336 int 337 ssl_cert_set1_chain(SSL_CTX *ctx, SSL *ssl, STACK_OF(X509) *chain) 338 { 339 STACK_OF(X509) *new_chain = NULL; 340 341 if (chain != NULL) { 342 if ((new_chain = X509_chain_up_ref(chain)) == NULL) 343 return 0; 344 } 345 if (!ssl_cert_set0_chain(ctx, ssl, new_chain)) { 346 sk_X509_pop_free(new_chain, X509_free); 347 return 0; 348 } 349 350 return 1; 351 } 352 353 int 354 ssl_cert_add0_chain_cert(SSL_CTX *ctx, SSL *ssl, X509 *cert) 355 { 356 SSL_CERT *ssl_cert; 357 SSL_CERT_PKEY *cpk; 358 int ssl_err; 359 360 if ((ssl_cert = ssl_get0_cert(ctx, ssl)) == NULL) 361 return 0; 362 363 if ((cpk = ssl_cert->key) == NULL) 364 return 0; 365 366 if (!ssl_security_cert(ctx, ssl, cert, 0, &ssl_err)) { 367 SSLerrorx(ssl_err); 368 return 0; 369 } 370 371 if (cpk->chain == NULL) { 372 if ((cpk->chain = sk_X509_new_null()) == NULL) 373 return 0; 374 } 375 if (!sk_X509_push(cpk->chain, cert)) 376 return 0; 377 378 return 1; 379 } 380 381 int 382 ssl_cert_add1_chain_cert(SSL_CTX *ctx, SSL *ssl, X509 *cert) 383 { 384 if (!ssl_cert_add0_chain_cert(ctx, ssl, cert)) 385 return 0; 386 387 X509_up_ref(cert); 388 389 return 1; 390 } 391 392 int 393 ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *certs) 394 { 395 X509_STORE_CTX *ctx = NULL; 396 X509_VERIFY_PARAM *param; 397 X509 *cert; 398 int ret = 0; 399 400 if (sk_X509_num(certs) < 1) 401 goto err; 402 403 if ((ctx = X509_STORE_CTX_new()) == NULL) 404 goto err; 405 406 cert = sk_X509_value(certs, 0); 407 if (!X509_STORE_CTX_init(ctx, s->ctx->cert_store, cert, certs)) { 408 SSLerror(s, ERR_R_X509_LIB); 409 goto err; 410 } 411 X509_STORE_CTX_set_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s); 412 413 /* 414 * We need to inherit the verify parameters. These can be 415 * determined by the context: if its a server it will verify 416 * SSL client certificates or vice versa. 417 */ 418 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server"); 419 420 param = X509_STORE_CTX_get0_param(ctx); 421 422 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s)); 423 424 /* 425 * Anything non-default in "param" should overwrite anything 426 * in the ctx. 427 */ 428 X509_VERIFY_PARAM_set1(param, s->param); 429 430 if (s->verify_callback) 431 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback); 432 433 if (s->ctx->app_verify_callback != NULL) 434 ret = s->ctx->app_verify_callback(ctx, 435 s->ctx->app_verify_arg); 436 else 437 ret = X509_verify_cert(ctx); 438 439 s->verify_result = X509_STORE_CTX_get_error(ctx); 440 sk_X509_pop_free(s->s3->hs.verified_chain, X509_free); 441 s->s3->hs.verified_chain = NULL; 442 if (X509_STORE_CTX_get0_chain(ctx) != NULL) { 443 s->s3->hs.verified_chain = X509_STORE_CTX_get1_chain(ctx); 444 if (s->s3->hs.verified_chain == NULL) { 445 SSLerrorx(ERR_R_MALLOC_FAILURE); 446 ret = 0; 447 } 448 } 449 450 err: 451 X509_STORE_CTX_free(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 = NULL; 470 471 if ((ret = sk_X509_NAME_new_null()) == NULL) 472 goto err; 473 474 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 475 if ((name = X509_NAME_dup(sk_X509_NAME_value(sk, i))) == NULL) 476 goto err; 477 if (!sk_X509_NAME_push(ret, name)) 478 goto err; 479 } 480 return (ret); 481 482 err: 483 X509_NAME_free(name); 484 sk_X509_NAME_pop_free(ret, X509_NAME_free); 485 return NULL; 486 } 487 LSSL_ALIAS(SSL_dup_CA_list); 488 489 void 490 SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list) 491 { 492 set_client_CA_list(&(s->client_CA), name_list); 493 } 494 LSSL_ALIAS(SSL_set_client_CA_list); 495 496 void 497 SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) 498 { 499 set_client_CA_list(&(ctx->client_CA), name_list); 500 } 501 LSSL_ALIAS(SSL_CTX_set_client_CA_list); 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 LSSL_ALIAS(SSL_CTX_get_client_CA_list); 509 510 STACK_OF(X509_NAME) * 511 SSL_get_client_CA_list(const SSL *s) 512 { 513 if (!s->server) { 514 /* We are in the client. */ 515 if ((s->version >> 8) == SSL3_VERSION_MAJOR) 516 return (s->s3->hs.tls12.ca_names); 517 else 518 return (NULL); 519 } else { 520 if (s->client_CA != NULL) 521 return (s->client_CA); 522 else 523 return (s->ctx->client_CA); 524 } 525 } 526 LSSL_ALIAS(SSL_get_client_CA_list); 527 528 static int 529 add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x) 530 { 531 X509_NAME *name; 532 533 if (x == NULL) 534 return (0); 535 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL)) 536 return (0); 537 538 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL) 539 return (0); 540 541 if (!sk_X509_NAME_push(*sk, name)) { 542 X509_NAME_free(name); 543 return (0); 544 } 545 return (1); 546 } 547 548 int 549 SSL_add_client_CA(SSL *ssl, X509 *x) 550 { 551 return (add_client_CA(&(ssl->client_CA), x)); 552 } 553 LSSL_ALIAS(SSL_add_client_CA); 554 555 int 556 SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x) 557 { 558 return (add_client_CA(&(ctx->client_CA), x)); 559 } 560 LSSL_ALIAS(SSL_CTX_add_client_CA); 561 562 static int 563 xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 564 { 565 return (X509_NAME_cmp(*a, *b)); 566 } 567 568 /*! 569 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 570 * it doesn't really have anything to do with clients (except that a common use 571 * for a stack of CAs is to send it to the client). Actually, it doesn't have 572 * much to do with CAs, either, since it will load any old cert. 573 * \param file the file containing one or more certs. 574 * \return a ::STACK containing the certs. 575 */ 576 STACK_OF(X509_NAME) * 577 SSL_load_client_CA_file(const char *file) 578 { 579 BIO *in; 580 X509 *x = NULL; 581 X509_NAME *xn = NULL; 582 STACK_OF(X509_NAME) *ret = NULL, *sk; 583 584 sk = sk_X509_NAME_new(xname_cmp); 585 586 in = BIO_new(BIO_s_file()); 587 588 if ((sk == NULL) || (in == NULL)) { 589 SSLerrorx(ERR_R_MALLOC_FAILURE); 590 goto err; 591 } 592 593 if (!BIO_read_filename(in, file)) 594 goto err; 595 596 for (;;) { 597 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 598 break; 599 if (ret == NULL) { 600 ret = sk_X509_NAME_new_null(); 601 if (ret == NULL) { 602 SSLerrorx(ERR_R_MALLOC_FAILURE); 603 goto err; 604 } 605 } 606 if ((xn = X509_get_subject_name(x)) == NULL) 607 goto err; 608 /* check for duplicates */ 609 xn = X509_NAME_dup(xn); 610 if (xn == NULL) 611 goto err; 612 if (sk_X509_NAME_find(sk, xn) >= 0) 613 X509_NAME_free(xn); 614 else { 615 if (!sk_X509_NAME_push(sk, xn)) 616 goto err; 617 if (!sk_X509_NAME_push(ret, xn)) 618 goto err; 619 } 620 } 621 622 if (0) { 623 err: 624 sk_X509_NAME_pop_free(ret, X509_NAME_free); 625 ret = NULL; 626 } 627 sk_X509_NAME_free(sk); 628 BIO_free(in); 629 X509_free(x); 630 if (ret != NULL) 631 ERR_clear_error(); 632 633 return (ret); 634 } 635 LSSL_ALIAS(SSL_load_client_CA_file); 636 637 /*! 638 * Add a file of certs to a stack. 639 * \param stack the stack to add to. 640 * \param file the file to add from. All certs in this file that are not 641 * already in the stack will be added. 642 * \return 1 for success, 0 for failure. Note that in the case of failure some 643 * certs may have been added to \c stack. 644 */ 645 646 int 647 SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 648 const char *file) 649 { 650 BIO *in; 651 X509 *x = NULL; 652 X509_NAME *xn = NULL; 653 int ret = 1; 654 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 655 656 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp); 657 658 in = BIO_new(BIO_s_file()); 659 660 if (in == NULL) { 661 SSLerrorx(ERR_R_MALLOC_FAILURE); 662 goto err; 663 } 664 665 if (!BIO_read_filename(in, file)) 666 goto err; 667 668 for (;;) { 669 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 670 break; 671 if ((xn = X509_get_subject_name(x)) == NULL) 672 goto err; 673 xn = X509_NAME_dup(xn); 674 if (xn == NULL) 675 goto err; 676 if (sk_X509_NAME_find(stack, xn) >= 0) 677 X509_NAME_free(xn); 678 else 679 if (!sk_X509_NAME_push(stack, xn)) 680 goto err; 681 } 682 683 ERR_clear_error(); 684 685 if (0) { 686 err: 687 ret = 0; 688 } 689 BIO_free(in); 690 X509_free(x); 691 692 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp); 693 694 return ret; 695 } 696 LSSL_ALIAS(SSL_add_file_cert_subjects_to_stack); 697 698 /*! 699 * Add a directory of certs to a stack. 700 * \param stack the stack to append to. 701 * \param dir the directory to append from. All files in this directory will be 702 * examined as potential certs. Any that are acceptable to 703 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will 704 * be included. 705 * \return 1 for success, 0 for failure. Note that in the case of failure some 706 * certs may have been added to \c stack. 707 */ 708 709 int 710 SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, const char *dir) 711 { 712 DIR *dirp = NULL; 713 char *path = NULL; 714 int ret = 0; 715 716 dirp = opendir(dir); 717 if (dirp) { 718 struct dirent *dp; 719 while ((dp = readdir(dirp)) != NULL) { 720 if (asprintf(&path, "%s/%s", dir, dp->d_name) != -1) { 721 ret = SSL_add_file_cert_subjects_to_stack( 722 stack, path); 723 free(path); 724 } 725 if (!ret) 726 break; 727 } 728 (void) closedir(dirp); 729 } 730 if (!ret) { 731 SYSerror(errno); 732 ERR_asprintf_error_data("opendir ('%s')", dir); 733 SSLerrorx(ERR_R_SYS_LIB); 734 } 735 return ret; 736 } 737 LSSL_ALIAS(SSL_add_dir_cert_subjects_to_stack); 738