1 /* $OpenBSD: ssl_cert.c,v 1.58 2017/01/23 06:45:30 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_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 static void 162 ssl_cert_set_default_md(CERT *cert) 163 { 164 /* Set digest values to defaults */ 165 cert->pkeys[SSL_PKEY_DSA_SIGN].digest = EVP_sha1(); 166 cert->pkeys[SSL_PKEY_RSA_SIGN].digest = EVP_sha1(); 167 cert->pkeys[SSL_PKEY_RSA_ENC].digest = EVP_sha1(); 168 cert->pkeys[SSL_PKEY_ECC].digest = EVP_sha1(); 169 #ifndef OPENSSL_NO_GOST 170 cert->pkeys[SSL_PKEY_GOST01].digest = EVP_gostr341194(); 171 #endif 172 } 173 174 CERT * 175 ssl_cert_new(void) 176 { 177 CERT *ret; 178 179 ret = calloc(1, sizeof(CERT)); 180 if (ret == NULL) { 181 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE); 182 return (NULL); 183 } 184 ret->key = &(ret->pkeys[SSL_PKEY_RSA_ENC]); 185 ret->references = 1; 186 ssl_cert_set_default_md(ret); 187 return (ret); 188 } 189 190 CERT * 191 ssl_cert_dup(CERT *cert) 192 { 193 CERT *ret; 194 int i; 195 196 ret = calloc(1, sizeof(CERT)); 197 if (ret == NULL) { 198 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); 199 return (NULL); 200 } 201 202 /* 203 * same as ret->key = ret->pkeys + (cert->key - cert->pkeys), 204 * if you find that more readable 205 */ 206 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]]; 207 208 ret->valid = cert->valid; 209 ret->mask_k = cert->mask_k; 210 ret->mask_a = cert->mask_a; 211 212 if (cert->dh_tmp != NULL) { 213 ret->dh_tmp = DHparams_dup(cert->dh_tmp); 214 if (ret->dh_tmp == NULL) { 215 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB); 216 goto err; 217 } 218 if (cert->dh_tmp->priv_key) { 219 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key); 220 if (!b) { 221 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 222 goto err; 223 } 224 ret->dh_tmp->priv_key = b; 225 } 226 if (cert->dh_tmp->pub_key) { 227 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key); 228 if (!b) { 229 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 230 goto err; 231 } 232 ret->dh_tmp->pub_key = b; 233 } 234 } 235 ret->dh_tmp_cb = cert->dh_tmp_cb; 236 ret->dh_tmp_auto = cert->dh_tmp_auto; 237 238 if (cert->ecdh_tmp) { 239 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp); 240 if (ret->ecdh_tmp == NULL) { 241 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB); 242 goto err; 243 } 244 } 245 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb; 246 ret->ecdh_tmp_auto = cert->ecdh_tmp_auto; 247 248 for (i = 0; i < SSL_PKEY_NUM; i++) { 249 if (cert->pkeys[i].x509 != NULL) { 250 ret->pkeys[i].x509 = cert->pkeys[i].x509; 251 CRYPTO_add(&ret->pkeys[i].x509->references, 1, 252 CRYPTO_LOCK_X509); 253 } 254 255 if (cert->pkeys[i].privatekey != NULL) { 256 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey; 257 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1, 258 CRYPTO_LOCK_EVP_PKEY); 259 260 switch (i) { 261 /* 262 * If there was anything special to do for 263 * certain types of keys, we'd do it here. 264 * (Nothing at the moment, I think.) 265 */ 266 267 case SSL_PKEY_RSA_ENC: 268 case SSL_PKEY_RSA_SIGN: 269 /* We have an RSA key. */ 270 break; 271 272 case SSL_PKEY_DSA_SIGN: 273 /* We have a DSA key. */ 274 break; 275 276 case SSL_PKEY_DH_RSA: 277 case SSL_PKEY_DH_DSA: 278 /* We have a DH key. */ 279 break; 280 281 case SSL_PKEY_ECC: 282 /* We have an ECC key */ 283 break; 284 285 default: 286 /* Can't happen. */ 287 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG); 288 } 289 } 290 } 291 292 /* 293 * ret->extra_certs *should* exist, but currently the own certificate 294 * chain is held inside SSL_CTX 295 */ 296 297 ret->references = 1; 298 /* 299 * Set digests to defaults. NB: we don't copy existing values 300 * as they will be set during handshake. 301 */ 302 ssl_cert_set_default_md(ret); 303 304 return (ret); 305 306 err: 307 DH_free(ret->dh_tmp); 308 EC_KEY_free(ret->ecdh_tmp); 309 310 for (i = 0; i < SSL_PKEY_NUM; i++) { 311 X509_free(ret->pkeys[i].x509); 312 EVP_PKEY_free(ret->pkeys[i].privatekey); 313 } 314 free (ret); 315 return NULL; 316 } 317 318 319 void 320 ssl_cert_free(CERT *c) 321 { 322 int i; 323 324 if (c == NULL) 325 return; 326 327 i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT); 328 if (i > 0) 329 return; 330 331 DH_free(c->dh_tmp); 332 EC_KEY_free(c->ecdh_tmp); 333 334 for (i = 0; i < SSL_PKEY_NUM; i++) { 335 X509_free(c->pkeys[i].x509); 336 EVP_PKEY_free(c->pkeys[i].privatekey); 337 } 338 339 free(c); 340 } 341 342 int 343 ssl_cert_inst(CERT **o) 344 { 345 /* 346 * Create a CERT if there isn't already one 347 * (which cannot really happen, as it is initially created in 348 * SSL_CTX_new; but the earlier code usually allows for that one 349 * being non-existant, so we follow that behaviour, as it might 350 * turn out that there actually is a reason for it -- but I'm 351 * not sure that *all* of the existing code could cope with 352 * s->cert being NULL, otherwise we could do without the 353 * initialization in SSL_CTX_new). 354 */ 355 356 if (o == NULL) { 357 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER); 358 return (0); 359 } 360 if (*o == NULL) { 361 if ((*o = ssl_cert_new()) == NULL) { 362 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE); 363 return (0); 364 } 365 } 366 return (1); 367 } 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 SSLerr(SSL_F_SSL_SESS_CERT_NEW, 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 /* i == 0 */ 399 if (sc->cert_chain != NULL) 400 sk_X509_pop_free(sc->cert_chain, X509_free); 401 for (i = 0; i < SSL_PKEY_NUM; i++) 402 X509_free(sc->peer_pkeys[i].x509); 403 404 DH_free(sc->peer_dh_tmp); 405 EC_KEY_free(sc->peer_ecdh_tmp); 406 free(sc->peer_x25519_tmp); 407 408 free(sc); 409 } 410 411 int 412 ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk) 413 { 414 X509_STORE_CTX ctx; 415 X509 *x; 416 int ret; 417 418 if ((sk == NULL) || (sk_X509_num(sk) == 0)) 419 return (0); 420 421 x = sk_X509_value(sk, 0); 422 if (!X509_STORE_CTX_init(&ctx, s->ctx->cert_store, x, sk)) { 423 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB); 424 return (0); 425 } 426 X509_STORE_CTX_set_ex_data(&ctx, 427 SSL_get_ex_data_X509_STORE_CTX_idx(), s); 428 429 /* 430 * We need to inherit the verify parameters. These can be 431 * determined by the context: if its a server it will verify 432 * SSL client certificates or vice versa. 433 */ 434 X509_STORE_CTX_set_default(&ctx, 435 s->server ? "ssl_client" : "ssl_server"); 436 437 /* 438 * Anything non-default in "param" should overwrite anything 439 * in the ctx. 440 */ 441 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param); 442 443 if (s->internal->verify_callback) 444 X509_STORE_CTX_set_verify_cb(&ctx, s->internal->verify_callback); 445 446 if (s->ctx->internal->app_verify_callback != NULL) 447 ret = s->ctx->internal->app_verify_callback(&ctx, 448 s->ctx->internal->app_verify_arg); 449 else 450 ret = X509_verify_cert(&ctx); 451 452 s->verify_result = ctx.error; 453 X509_STORE_CTX_cleanup(&ctx); 454 455 return (ret); 456 } 457 458 static void 459 set_client_CA_list(STACK_OF(X509_NAME) **ca_list, 460 STACK_OF(X509_NAME) *name_list) 461 { 462 if (*ca_list != NULL) 463 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free); 464 465 *ca_list = name_list; 466 } 467 468 STACK_OF(X509_NAME) * 469 SSL_dup_CA_list(STACK_OF(X509_NAME) *sk) 470 { 471 int i; 472 STACK_OF(X509_NAME) *ret; 473 X509_NAME *name; 474 475 ret = sk_X509_NAME_new_null(); 476 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 477 name = X509_NAME_dup(sk_X509_NAME_value(sk, i)); 478 if ((name == NULL) || !sk_X509_NAME_push(ret, name)) { 479 sk_X509_NAME_pop_free(ret, X509_NAME_free); 480 return (NULL); 481 } 482 } 483 return (ret); 484 } 485 486 void 487 SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list) 488 { 489 set_client_CA_list(&(s->internal->client_CA), name_list); 490 } 491 492 void 493 SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) 494 { 495 set_client_CA_list(&(ctx->internal->client_CA), name_list); 496 } 497 498 STACK_OF(X509_NAME) * 499 SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 500 { 501 return (ctx->internal->client_CA); 502 } 503 504 STACK_OF(X509_NAME) * 505 SSL_get_client_CA_list(const SSL *s) 506 { 507 if (s->internal->type == SSL_ST_CONNECT) { 508 /* We are in the client. */ 509 if (((s->version >> 8) == SSL3_VERSION_MAJOR) && 510 (s->s3 != NULL)) 511 return (S3I(s)->tmp.ca_names); 512 else 513 return (NULL); 514 } else { 515 if (s->internal->client_CA != NULL) 516 return (s->internal->client_CA); 517 else 518 return (s->ctx->internal->client_CA); 519 } 520 } 521 522 static int 523 add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x) 524 { 525 X509_NAME *name; 526 527 if (x == NULL) 528 return (0); 529 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL)) 530 return (0); 531 532 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL) 533 return (0); 534 535 if (!sk_X509_NAME_push(*sk, name)) { 536 X509_NAME_free(name); 537 return (0); 538 } 539 return (1); 540 } 541 542 int 543 SSL_add_client_CA(SSL *ssl, X509 *x) 544 { 545 return (add_client_CA(&(ssl->internal->client_CA), x)); 546 } 547 548 int 549 SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x) 550 { 551 return (add_client_CA(&(ctx->internal->client_CA), x)); 552 } 553 554 static int 555 xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 556 { 557 return (X509_NAME_cmp(*a, *b)); 558 } 559 560 /*! 561 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 562 * it doesn't really have anything to do with clients (except that a common use 563 * for a stack of CAs is to send it to the client). Actually, it doesn't have 564 * much to do with CAs, either, since it will load any old cert. 565 * \param file the file containing one or more certs. 566 * \return a ::STACK containing the certs. 567 */ 568 STACK_OF(X509_NAME) * 569 SSL_load_client_CA_file(const char *file) 570 { 571 BIO *in; 572 X509 *x = NULL; 573 X509_NAME *xn = NULL; 574 STACK_OF(X509_NAME) *ret = NULL, *sk; 575 576 sk = sk_X509_NAME_new(xname_cmp); 577 578 in = BIO_new(BIO_s_file_internal()); 579 580 if ((sk == NULL) || (in == NULL)) { 581 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE); 582 goto err; 583 } 584 585 if (!BIO_read_filename(in, file)) 586 goto err; 587 588 for (;;) { 589 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 590 break; 591 if (ret == NULL) { 592 ret = sk_X509_NAME_new_null(); 593 if (ret == NULL) { 594 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, 595 ERR_R_MALLOC_FAILURE); 596 goto err; 597 } 598 } 599 if ((xn = X509_get_subject_name(x)) == NULL) goto err; 600 /* check for duplicates */ 601 xn = X509_NAME_dup(xn); 602 if (xn == NULL) 603 goto err; 604 if (sk_X509_NAME_find(sk, xn) >= 0) 605 X509_NAME_free(xn); 606 else { 607 sk_X509_NAME_push(sk, xn); 608 sk_X509_NAME_push(ret, xn); 609 } 610 } 611 612 if (0) { 613 err: 614 if (ret != NULL) 615 sk_X509_NAME_pop_free(ret, X509_NAME_free); 616 ret = NULL; 617 } 618 if (sk != NULL) 619 sk_X509_NAME_free(sk); 620 BIO_free(in); 621 X509_free(x); 622 if (ret != NULL) 623 ERR_clear_error(); 624 return (ret); 625 } 626 627 /*! 628 * Add a file of certs to a stack. 629 * \param stack the stack to add to. 630 * \param file the file to add from. All certs in this file that are not 631 * already in the stack will be added. 632 * \return 1 for success, 0 for failure. Note that in the case of failure some 633 * certs may have been added to \c stack. 634 */ 635 636 int 637 SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 638 const char *file) 639 { 640 BIO *in; 641 X509 *x = NULL; 642 X509_NAME *xn = NULL; 643 int ret = 1; 644 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 645 646 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp); 647 648 in = BIO_new(BIO_s_file_internal()); 649 650 if (in == NULL) { 651 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, 652 ERR_R_MALLOC_FAILURE); 653 goto err; 654 } 655 656 if (!BIO_read_filename(in, file)) 657 goto err; 658 659 for (;;) { 660 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 661 break; 662 if ((xn = X509_get_subject_name(x)) == NULL) goto err; 663 xn = X509_NAME_dup(xn); 664 if (xn == NULL) 665 goto err; 666 if (sk_X509_NAME_find(stack, xn) >= 0) 667 X509_NAME_free(xn); 668 else 669 sk_X509_NAME_push(stack, xn); 670 } 671 672 ERR_clear_error(); 673 674 if (0) { 675 err: 676 ret = 0; 677 } 678 BIO_free(in); 679 X509_free(x); 680 681 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp); 682 683 return ret; 684 } 685 686 /*! 687 * Add a directory of certs to a stack. 688 * \param stack the stack to append to. 689 * \param dir the directory to append from. All files in this directory will be 690 * examined as potential certs. Any that are acceptable to 691 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will 692 * be included. 693 * \return 1 for success, 0 for failure. Note that in the case of failure some 694 * certs may have been added to \c stack. 695 */ 696 697 int 698 SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, const char *dir) 699 { 700 DIR *dirp = NULL; 701 char *path = NULL; 702 int ret = 0; 703 704 dirp = opendir(dir); 705 if (dirp) { 706 struct dirent *dp; 707 while ((dp = readdir(dirp)) != NULL) { 708 if (asprintf(&path, "%s/%s", dir, dp->d_name) != -1) { 709 ret = SSL_add_file_cert_subjects_to_stack( 710 stack, path); 711 free(path); 712 } 713 if (!ret) 714 break; 715 } 716 (void) closedir(dirp); 717 } 718 if (!ret) { 719 SYSerr(SYS_F_OPENDIR, errno); 720 ERR_asprintf_error_data("opendir ('%s')", dir); 721 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB); 722 } 723 return ret; 724 } 725