1 /* $OpenBSD: ssl_cert.c,v 1.51 2015/09/11 17:37:47 jsing 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); 406 407 free(sc); 408 } 409 410 int 411 ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk) 412 { 413 X509_STORE_CTX ctx; 414 X509 *x; 415 int ret; 416 417 if ((sk == NULL) || (sk_X509_num(sk) == 0)) 418 return (0); 419 420 x = sk_X509_value(sk, 0); 421 if (!X509_STORE_CTX_init(&ctx, s->ctx->cert_store, x, sk)) { 422 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB); 423 return (0); 424 } 425 X509_STORE_CTX_set_ex_data(&ctx, 426 SSL_get_ex_data_X509_STORE_CTX_idx(), s); 427 428 /* 429 * We need to inherit the verify parameters. These can be 430 * determined by the context: if its a server it will verify 431 * SSL client certificates or vice versa. 432 */ 433 X509_STORE_CTX_set_default(&ctx, 434 s->server ? "ssl_client" : "ssl_server"); 435 436 /* 437 * Anything non-default in "param" should overwrite anything 438 * in the ctx. 439 */ 440 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param); 441 442 if (s->verify_callback) 443 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback); 444 445 if (s->ctx->app_verify_callback != NULL) 446 ret = s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg); 447 else 448 ret = X509_verify_cert(&ctx); 449 450 s->verify_result = ctx.error; 451 X509_STORE_CTX_cleanup(&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 if (*ca_list != NULL) 461 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free); 462 463 *ca_list = name_list; 464 } 465 466 STACK_OF(X509_NAME) * 467 SSL_dup_CA_list(STACK_OF(X509_NAME) *sk) 468 { 469 int i; 470 STACK_OF(X509_NAME) *ret; 471 X509_NAME *name; 472 473 ret = sk_X509_NAME_new_null(); 474 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 475 name = X509_NAME_dup(sk_X509_NAME_value(sk, i)); 476 if ((name == NULL) || !sk_X509_NAME_push(ret, name)) { 477 sk_X509_NAME_pop_free(ret, X509_NAME_free); 478 return (NULL); 479 } 480 } 481 return (ret); 482 } 483 484 void 485 SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list) 486 { 487 set_client_CA_list(&(s->client_CA), name_list); 488 } 489 490 void 491 SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) 492 { 493 set_client_CA_list(&(ctx->client_CA), name_list); 494 } 495 496 STACK_OF(X509_NAME) * 497 SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 498 { 499 return (ctx->client_CA); 500 } 501 502 STACK_OF(X509_NAME) * 503 SSL_get_client_CA_list(const SSL *s) 504 { 505 if (s->type == SSL_ST_CONNECT) { 506 /* We are in the client. */ 507 if (((s->version >> 8) == SSL3_VERSION_MAJOR) && 508 (s->s3 != NULL)) 509 return (s->s3->tmp.ca_names); 510 else 511 return (NULL); 512 } else { 513 if (s->client_CA != NULL) 514 return (s->client_CA); 515 else 516 return (s->ctx->client_CA); 517 } 518 } 519 520 static int 521 add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x) 522 { 523 X509_NAME *name; 524 525 if (x == NULL) 526 return (0); 527 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL)) 528 return (0); 529 530 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL) 531 return (0); 532 533 if (!sk_X509_NAME_push(*sk, name)) { 534 X509_NAME_free(name); 535 return (0); 536 } 537 return (1); 538 } 539 540 int 541 SSL_add_client_CA(SSL *ssl, X509 *x) 542 { 543 return (add_client_CA(&(ssl->client_CA), x)); 544 } 545 546 int 547 SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x) 548 { 549 return (add_client_CA(&(ctx->client_CA), x)); 550 } 551 552 static int 553 xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 554 { 555 return (X509_NAME_cmp(*a, *b)); 556 } 557 558 /*! 559 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 560 * it doesn't really have anything to do with clients (except that a common use 561 * for a stack of CAs is to send it to the client). Actually, it doesn't have 562 * much to do with CAs, either, since it will load any old cert. 563 * \param file the file containing one or more certs. 564 * \return a ::STACK containing the certs. 565 */ 566 STACK_OF(X509_NAME) * 567 SSL_load_client_CA_file(const char *file) 568 { 569 BIO *in; 570 X509 *x = NULL; 571 X509_NAME *xn = NULL; 572 STACK_OF(X509_NAME) *ret = NULL, *sk; 573 574 sk = sk_X509_NAME_new(xname_cmp); 575 576 in = BIO_new(BIO_s_file_internal()); 577 578 if ((sk == NULL) || (in == NULL)) { 579 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE); 580 goto err; 581 } 582 583 if (!BIO_read_filename(in, file)) 584 goto err; 585 586 for (;;) { 587 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 588 break; 589 if (ret == NULL) { 590 ret = sk_X509_NAME_new_null(); 591 if (ret == NULL) { 592 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, 593 ERR_R_MALLOC_FAILURE); 594 goto err; 595 } 596 } 597 if ((xn = X509_get_subject_name(x)) == NULL) goto err; 598 /* check for duplicates */ 599 xn = X509_NAME_dup(xn); 600 if (xn == NULL) 601 goto err; 602 if (sk_X509_NAME_find(sk, xn) >= 0) 603 X509_NAME_free(xn); 604 else { 605 sk_X509_NAME_push(sk, xn); 606 sk_X509_NAME_push(ret, xn); 607 } 608 } 609 610 if (0) { 611 err: 612 if (ret != NULL) 613 sk_X509_NAME_pop_free(ret, X509_NAME_free); 614 ret = NULL; 615 } 616 if (sk != NULL) 617 sk_X509_NAME_free(sk); 618 BIO_free(in); 619 X509_free(x); 620 if (ret != NULL) 621 ERR_clear_error(); 622 return (ret); 623 } 624 625 /*! 626 * Add a file of certs to a stack. 627 * \param stack the stack to add to. 628 * \param file the file to add from. All certs in this file that are not 629 * already in the stack will be added. 630 * \return 1 for success, 0 for failure. Note that in the case of failure some 631 * certs may have been added to \c stack. 632 */ 633 634 int 635 SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 636 const char *file) 637 { 638 BIO *in; 639 X509 *x = NULL; 640 X509_NAME *xn = NULL; 641 int ret = 1; 642 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 643 644 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp); 645 646 in = BIO_new(BIO_s_file_internal()); 647 648 if (in == NULL) { 649 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, 650 ERR_R_MALLOC_FAILURE); 651 goto err; 652 } 653 654 if (!BIO_read_filename(in, file)) 655 goto err; 656 657 for (;;) { 658 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 659 break; 660 if ((xn = X509_get_subject_name(x)) == NULL) goto err; 661 xn = X509_NAME_dup(xn); 662 if (xn == NULL) 663 goto err; 664 if (sk_X509_NAME_find(stack, xn) >= 0) 665 X509_NAME_free(xn); 666 else 667 sk_X509_NAME_push(stack, xn); 668 } 669 670 ERR_clear_error(); 671 672 if (0) { 673 err: 674 ret = 0; 675 } 676 BIO_free(in); 677 X509_free(x); 678 679 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp); 680 681 return ret; 682 } 683 684 /*! 685 * Add a directory of certs to a stack. 686 * \param stack the stack to append to. 687 * \param dir the directory to append from. All files in this directory will be 688 * examined as potential certs. Any that are acceptable to 689 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will 690 * be included. 691 * \return 1 for success, 0 for failure. Note that in the case of failure some 692 * certs may have been added to \c stack. 693 */ 694 695 int 696 SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, const char *dir) 697 { 698 DIR *dirp = NULL; 699 char *path = NULL; 700 int ret = 0; 701 702 dirp = opendir(dir); 703 if (dirp) { 704 struct dirent *dp; 705 while ((dp = readdir(dirp)) != NULL) { 706 if (asprintf(&path, "%s/%s", dir, dp->d_name) != -1) { 707 ret = SSL_add_file_cert_subjects_to_stack( 708 stack, path); 709 free(path); 710 } 711 if (!ret) 712 break; 713 } 714 (void) closedir(dirp); 715 } 716 if (!ret) { 717 SYSerr(SYS_F_OPENDIR, errno); 718 ERR_asprintf_error_data("opendir ('%s')", dir); 719 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB); 720 } 721 return ret; 722 } 723