1 /* $OpenBSD: ssl_cert.c,v 1.46 2014/11/18 05:33:43 miod 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_GOST94].digest = EVP_gostr341194(); 171 cert->pkeys[SSL_PKEY_GOST01].digest = EVP_gostr341194(); 172 #endif 173 } 174 175 CERT * 176 ssl_cert_new(void) 177 { 178 CERT *ret; 179 180 ret = calloc(1, sizeof(CERT)); 181 if (ret == NULL) { 182 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE); 183 return (NULL); 184 } 185 ret->key = &(ret->pkeys[SSL_PKEY_RSA_ENC]); 186 ret->references = 1; 187 ssl_cert_set_default_md(ret); 188 return (ret); 189 } 190 191 CERT * 192 ssl_cert_dup(CERT *cert) 193 { 194 CERT *ret; 195 int i; 196 197 ret = calloc(1, sizeof(CERT)); 198 if (ret == NULL) { 199 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); 200 return (NULL); 201 } 202 203 /* 204 * same as ret->key = ret->pkeys + (cert->key - cert->pkeys), 205 * if you find that more readable 206 */ 207 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]]; 208 209 ret->valid = cert->valid; 210 ret->mask_k = cert->mask_k; 211 ret->mask_a = cert->mask_a; 212 213 if (cert->dh_tmp != NULL) { 214 ret->dh_tmp = DHparams_dup(cert->dh_tmp); 215 if (ret->dh_tmp == NULL) { 216 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB); 217 goto err; 218 } 219 if (cert->dh_tmp->priv_key) { 220 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key); 221 if (!b) { 222 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 223 goto err; 224 } 225 ret->dh_tmp->priv_key = b; 226 } 227 if (cert->dh_tmp->pub_key) { 228 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key); 229 if (!b) { 230 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 231 goto err; 232 } 233 ret->dh_tmp->pub_key = b; 234 } 235 } 236 ret->dh_tmp_cb = cert->dh_tmp_cb; 237 ret->dh_tmp_auto = cert->dh_tmp_auto; 238 239 if (cert->ecdh_tmp) { 240 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp); 241 if (ret->ecdh_tmp == NULL) { 242 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB); 243 goto err; 244 } 245 } 246 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb; 247 ret->ecdh_tmp_auto = cert->ecdh_tmp_auto; 248 249 for (i = 0; i < SSL_PKEY_NUM; i++) { 250 if (cert->pkeys[i].x509 != NULL) { 251 ret->pkeys[i].x509 = cert->pkeys[i].x509; 252 CRYPTO_add(&ret->pkeys[i].x509->references, 1, 253 CRYPTO_LOCK_X509); 254 } 255 256 if (cert->pkeys[i].privatekey != NULL) { 257 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey; 258 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1, 259 CRYPTO_LOCK_EVP_PKEY); 260 261 switch (i) { 262 /* 263 * If there was anything special to do for 264 * certain types of keys, we'd do it here. 265 * (Nothing at the moment, I think.) 266 */ 267 268 case SSL_PKEY_RSA_ENC: 269 case SSL_PKEY_RSA_SIGN: 270 /* We have an RSA key. */ 271 break; 272 273 case SSL_PKEY_DSA_SIGN: 274 /* We have a DSA key. */ 275 break; 276 277 case SSL_PKEY_DH_RSA: 278 case SSL_PKEY_DH_DSA: 279 /* We have a DH key. */ 280 break; 281 282 case SSL_PKEY_ECC: 283 /* We have an ECC key */ 284 break; 285 286 default: 287 /* Can't happen. */ 288 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG); 289 } 290 } 291 } 292 293 /* 294 * ret->extra_certs *should* exist, but currently the own certificate 295 * chain is held inside SSL_CTX 296 */ 297 298 ret->references = 1; 299 /* 300 * Set digests to defaults. NB: we don't copy existing values 301 * as they will be set during handshake. 302 */ 303 ssl_cert_set_default_md(ret); 304 305 return (ret); 306 307 err: 308 DH_free(ret->dh_tmp); 309 EC_KEY_free(ret->ecdh_tmp); 310 311 for (i = 0; i < SSL_PKEY_NUM; i++) { 312 if (ret->pkeys[i].x509 != NULL) 313 X509_free(ret->pkeys[i].x509); 314 EVP_PKEY_free(ret->pkeys[i].privatekey); 315 } 316 free (ret); 317 return NULL; 318 } 319 320 321 void 322 ssl_cert_free(CERT *c) 323 { 324 int i; 325 326 if (c == NULL) 327 return; 328 329 i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT); 330 if (i > 0) 331 return; 332 333 DH_free(c->dh_tmp); 334 EC_KEY_free(c->ecdh_tmp); 335 336 for (i = 0; i < SSL_PKEY_NUM; i++) { 337 if (c->pkeys[i].x509 != NULL) 338 X509_free(c->pkeys[i].x509); 339 EVP_PKEY_free(c->pkeys[i].privatekey); 340 } 341 342 free(c); 343 } 344 345 int 346 ssl_cert_inst(CERT **o) 347 { 348 /* 349 * Create a CERT if there isn't already one 350 * (which cannot really happen, as it is initially created in 351 * SSL_CTX_new; but the earlier code usually allows for that one 352 * being non-existant, so we follow that behaviour, as it might 353 * turn out that there actually is a reason for it -- but I'm 354 * not sure that *all* of the existing code could cope with 355 * s->cert being NULL, otherwise we could do without the 356 * initialization in SSL_CTX_new). 357 */ 358 359 if (o == NULL) { 360 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER); 361 return (0); 362 } 363 if (*o == NULL) { 364 if ((*o = ssl_cert_new()) == NULL) { 365 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE); 366 return (0); 367 } 368 } 369 return (1); 370 } 371 372 373 SESS_CERT * 374 ssl_sess_cert_new(void) 375 { 376 SESS_CERT *ret; 377 378 ret = calloc(1, sizeof *ret); 379 if (ret == NULL) { 380 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE); 381 return NULL; 382 } 383 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]); 384 ret->references = 1; 385 386 return ret; 387 } 388 389 void 390 ssl_sess_cert_free(SESS_CERT *sc) 391 { 392 int i; 393 394 if (sc == NULL) 395 return; 396 397 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT); 398 if (i > 0) 399 return; 400 401 /* i == 0 */ 402 if (sc->cert_chain != NULL) 403 sk_X509_pop_free(sc->cert_chain, X509_free); 404 for (i = 0; i < SSL_PKEY_NUM; i++) { 405 if (sc->peer_pkeys[i].x509 != NULL) 406 X509_free(sc->peer_pkeys[i].x509); 407 } 408 409 RSA_free(sc->peer_rsa_tmp); 410 DH_free(sc->peer_dh_tmp); 411 EC_KEY_free(sc->peer_ecdh_tmp); 412 413 free(sc); 414 } 415 416 int 417 ssl_set_peer_cert_type(SESS_CERT *sc, int type) 418 { 419 sc->peer_cert_type = type; 420 return (1); 421 } 422 423 int 424 ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk) 425 { 426 X509_STORE_CTX ctx; 427 X509 *x; 428 int ret; 429 430 if ((sk == NULL) || (sk_X509_num(sk) == 0)) 431 return (0); 432 433 x = sk_X509_value(sk, 0); 434 if (!X509_STORE_CTX_init(&ctx, s->ctx->cert_store, x, sk)) { 435 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB); 436 return (0); 437 } 438 X509_STORE_CTX_set_ex_data(&ctx, 439 SSL_get_ex_data_X509_STORE_CTX_idx(), s); 440 441 /* 442 * We need to inherit the verify parameters. These can be 443 * determined by the context: if its a server it will verify 444 * SSL client certificates or vice versa. 445 */ 446 X509_STORE_CTX_set_default(&ctx, 447 s->server ? "ssl_client" : "ssl_server"); 448 449 /* 450 * Anything non-default in "param" should overwrite anything 451 * in the ctx. 452 */ 453 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param); 454 455 if (s->verify_callback) 456 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback); 457 458 if (s->ctx->app_verify_callback != NULL) 459 ret = s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg); 460 else 461 ret = X509_verify_cert(&ctx); 462 463 s->verify_result = ctx.error; 464 X509_STORE_CTX_cleanup(&ctx); 465 466 return (ret); 467 } 468 469 static void 470 set_client_CA_list(STACK_OF(X509_NAME) **ca_list, 471 STACK_OF(X509_NAME) *name_list) 472 { 473 if (*ca_list != NULL) 474 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free); 475 476 *ca_list = name_list; 477 } 478 479 STACK_OF(X509_NAME) * 480 SSL_dup_CA_list(STACK_OF(X509_NAME) *sk) 481 { 482 int i; 483 STACK_OF(X509_NAME) *ret; 484 X509_NAME *name; 485 486 ret = sk_X509_NAME_new_null(); 487 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 488 name = X509_NAME_dup(sk_X509_NAME_value(sk, i)); 489 if ((name == NULL) || !sk_X509_NAME_push(ret, name)) { 490 sk_X509_NAME_pop_free(ret, X509_NAME_free); 491 return (NULL); 492 } 493 } 494 return (ret); 495 } 496 497 void 498 SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list) 499 { 500 set_client_CA_list(&(s->client_CA), name_list); 501 } 502 503 void 504 SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) 505 { 506 set_client_CA_list(&(ctx->client_CA), name_list); 507 } 508 509 STACK_OF(X509_NAME) * 510 SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 511 { 512 return (ctx->client_CA); 513 } 514 515 STACK_OF(X509_NAME) * 516 SSL_get_client_CA_list(const SSL *s) 517 { 518 if (s->type == SSL_ST_CONNECT) { 519 /* We are in the client. */ 520 if (((s->version >> 8) == SSL3_VERSION_MAJOR) && 521 (s->s3 != NULL)) 522 return (s->s3->tmp.ca_names); 523 else 524 return (NULL); 525 } else { 526 if (s->client_CA != NULL) 527 return (s->client_CA); 528 else 529 return (s->ctx->client_CA); 530 } 531 } 532 533 static int 534 add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x) 535 { 536 X509_NAME *name; 537 538 if (x == NULL) 539 return (0); 540 if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL)) 541 return (0); 542 543 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL) 544 return (0); 545 546 if (!sk_X509_NAME_push(*sk, name)) { 547 X509_NAME_free(name); 548 return (0); 549 } 550 return (1); 551 } 552 553 int 554 SSL_add_client_CA(SSL *ssl, X509 *x) 555 { 556 return (add_client_CA(&(ssl->client_CA), x)); 557 } 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 } 564 565 static int 566 xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 567 { 568 return (X509_NAME_cmp(*a, *b)); 569 } 570 571 /*! 572 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 573 * it doesn't really have anything to do with clients (except that a common use 574 * for a stack of CAs is to send it to the client). Actually, it doesn't have 575 * much to do with CAs, either, since it will load any old cert. 576 * \param file the file containing one or more certs. 577 * \return a ::STACK containing the certs. 578 */ 579 STACK_OF(X509_NAME) * 580 SSL_load_client_CA_file(const char *file) 581 { 582 BIO *in; 583 X509 *x = NULL; 584 X509_NAME *xn = NULL; 585 STACK_OF(X509_NAME) *ret = NULL, *sk; 586 587 sk = sk_X509_NAME_new(xname_cmp); 588 589 in = BIO_new(BIO_s_file_internal()); 590 591 if ((sk == NULL) || (in == NULL)) { 592 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE); 593 goto err; 594 } 595 596 if (!BIO_read_filename(in, file)) 597 goto err; 598 599 for (;;) { 600 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 601 break; 602 if (ret == NULL) { 603 ret = sk_X509_NAME_new_null(); 604 if (ret == NULL) { 605 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, 606 ERR_R_MALLOC_FAILURE); 607 goto err; 608 } 609 } 610 if ((xn = X509_get_subject_name(x)) == NULL) goto err; 611 /* check for duplicates */ 612 xn = X509_NAME_dup(xn); 613 if (xn == NULL) 614 goto err; 615 if (sk_X509_NAME_find(sk, xn) >= 0) 616 X509_NAME_free(xn); 617 else { 618 sk_X509_NAME_push(sk, xn); 619 sk_X509_NAME_push(ret, xn); 620 } 621 } 622 623 if (0) { 624 err: 625 if (ret != NULL) 626 sk_X509_NAME_pop_free(ret, X509_NAME_free); 627 ret = NULL; 628 } 629 if (sk != NULL) 630 sk_X509_NAME_free(sk); 631 BIO_free(in); 632 if (x != NULL) 633 X509_free(x); 634 if (ret != NULL) 635 ERR_clear_error(); 636 return (ret); 637 } 638 639 /*! 640 * Add a file of certs to a stack. 641 * \param stack the stack to add to. 642 * \param file the file to add from. All certs in this file that are not 643 * already in the stack will be added. 644 * \return 1 for success, 0 for failure. Note that in the case of failure some 645 * certs may have been added to \c stack. 646 */ 647 648 int 649 SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 650 const char *file) 651 { 652 BIO *in; 653 X509 *x = NULL; 654 X509_NAME *xn = NULL; 655 int ret = 1; 656 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 657 658 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp); 659 660 in = BIO_new(BIO_s_file_internal()); 661 662 if (in == NULL) { 663 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, 664 ERR_R_MALLOC_FAILURE); 665 goto err; 666 } 667 668 if (!BIO_read_filename(in, file)) 669 goto err; 670 671 for (;;) { 672 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) 673 break; 674 if ((xn = X509_get_subject_name(x)) == NULL) goto err; 675 xn = X509_NAME_dup(xn); 676 if (xn == NULL) 677 goto err; 678 if (sk_X509_NAME_find(stack, xn) >= 0) 679 X509_NAME_free(xn); 680 else 681 sk_X509_NAME_push(stack, xn); 682 } 683 684 ERR_clear_error(); 685 686 if (0) { 687 err: 688 ret = 0; 689 } 690 BIO_free(in); 691 if (x != NULL) 692 X509_free(x); 693 694 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp); 695 696 return ret; 697 } 698 699 /*! 700 * Add a directory of certs to a stack. 701 * \param stack the stack to append to. 702 * \param dir the directory to append from. All files in this directory will be 703 * examined as potential certs. Any that are acceptable to 704 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will 705 * be included. 706 * \return 1 for success, 0 for failure. Note that in the case of failure some 707 * certs may have been added to \c stack. 708 */ 709 710 int 711 SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, const char *dir) 712 { 713 DIR *dirp = NULL; 714 char *path = NULL; 715 int ret = 0; 716 717 CRYPTO_w_lock(CRYPTO_LOCK_READDIR); 718 dirp = opendir(dir); 719 if (dirp) { 720 struct dirent *dp; 721 while ((dp = readdir(dirp)) != NULL) { 722 if (asprintf(&path, "%s/%s", dir, dp->d_name) != -1) { 723 ret = SSL_add_file_cert_subjects_to_stack( 724 stack, path); 725 free(path); 726 } 727 if (!ret) 728 break; 729 } 730 (void) closedir(dirp); 731 } 732 if (!ret) { 733 SYSerr(SYS_F_OPENDIR, errno); 734 ERR_asprintf_error_data("opendir ('%s')", dir); 735 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB); 736 } 737 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR); 738 return ret; 739 } 740