1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] 56 */ 57 /* ==================================================================== 58 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 59 * 60 * Redistribution and use in source and binary forms, with or without 61 * modification, are permitted provided that the following conditions 62 * are met: 63 * 64 * 1. Redistributions of source code must retain the above copyright 65 * notice, this list of conditions and the following disclaimer. 66 * 67 * 2. Redistributions in binary form must reproduce the above copyright 68 * notice, this list of conditions and the following disclaimer in 69 * the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3. All advertising materials mentioning features or use of this 73 * software must display the following acknowledgment: 74 * "This product includes software developed by the OpenSSL Project 75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 76 * 77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 78 * endorse or promote products derived from this software without 79 * prior written permission. For written permission, please contact 80 * openssl-core (at) openssl.org. 81 * 82 * 5. Products derived from this software may not be called "OpenSSL" 83 * nor may "OpenSSL" appear in their names without prior written 84 * permission of the OpenSSL Project. 85 * 86 * 6. Redistributions of any form whatsoever must retain the following 87 * acknowledgment: 88 * "This product includes software developed by the OpenSSL Project 89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 90 * 91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 102 * OF THE POSSIBILITY OF SUCH DAMAGE. 103 * ==================================================================== 104 * 105 * This product includes cryptographic software written by Eric Young 106 * (eay (at) cryptsoft.com). This product includes software written by Tim 107 * Hudson (tjh (at) cryptsoft.com). 108 * 109 */ 110 /* ==================================================================== 111 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 112 * ECC cipher suite support in OpenSSL originally developed by 113 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 114 */ 115 /* ==================================================================== 116 * Copyright 2005 Nokia. All rights reserved. 117 * 118 * The portions of the attached software ("Contribution") is developed by 119 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 120 * license. 121 * 122 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 123 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 124 * support (see RFC 4279) to OpenSSL. 125 * 126 * No patent licenses or other rights except those expressly stated in 127 * the OpenSSL open source license shall be deemed granted or received 128 * expressly, by implication, estoppel, or otherwise. 129 * 130 * No assurances are provided by Nokia that the Contribution does not 131 * infringe the patent or other intellectual property rights of any third 132 * party or that the license provides you with all the necessary rights 133 * to make use of the Contribution. 134 * 135 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 136 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 137 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 138 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 139 * OTHERWISE. */ 140 141 #include <openssl/ssl.h> 142 143 #include <assert.h> 144 145 #include <openssl/asn1.h> 146 #include <openssl/bytestring.h> 147 #include <openssl/err.h> 148 #include <openssl/pem.h> 149 #include <openssl/stack.h> 150 #include <openssl/x509.h> 151 #include <openssl/x509v3.h> 152 #include <openssl/x509_vfy.h> 153 154 #include "internal.h" 155 #include "../crypto/internal.h" 156 157 158 /* check_ssl_x509_method asserts that |ssl| has the X509-based method 159 * installed. Calling an X509-based method on an |ssl| with a different method 160 * will likely misbehave and possibly crash or leak memory. */ 161 static void check_ssl_x509_method(const SSL *ssl) { 162 assert(ssl == NULL || ssl->ctx->x509_method == &ssl_crypto_x509_method); 163 } 164 165 /* check_ssl_ctx_x509_method acts like |check_ssl_x509_method|, but for an 166 * |SSL_CTX|. */ 167 static void check_ssl_ctx_x509_method(const SSL_CTX *ctx) { 168 assert(ctx == NULL || ctx->x509_method == &ssl_crypto_x509_method); 169 } 170 171 X509 *SSL_get_peer_certificate(const SSL *ssl) { 172 check_ssl_x509_method(ssl); 173 if (ssl == NULL) { 174 return NULL; 175 } 176 SSL_SESSION *session = SSL_get_session(ssl); 177 if (session == NULL || session->x509_peer == NULL) { 178 return NULL; 179 } 180 X509_up_ref(session->x509_peer); 181 return session->x509_peer; 182 } 183 184 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *ssl) { 185 check_ssl_x509_method(ssl); 186 if (ssl == NULL) { 187 return NULL; 188 } 189 SSL_SESSION *session = SSL_get_session(ssl); 190 if (session == NULL || 191 session->x509_chain == NULL) { 192 return NULL; 193 } 194 195 if (!ssl->server) { 196 return session->x509_chain; 197 } 198 199 /* OpenSSL historically didn't include the leaf certificate in the returned 200 * certificate chain, but only for servers. */ 201 if (session->x509_chain_without_leaf == NULL) { 202 session->x509_chain_without_leaf = sk_X509_new_null(); 203 if (session->x509_chain_without_leaf == NULL) { 204 return NULL; 205 } 206 207 for (size_t i = 1; i < sk_X509_num(session->x509_chain); i++) { 208 X509 *cert = sk_X509_value(session->x509_chain, i); 209 if (!sk_X509_push(session->x509_chain_without_leaf, cert)) { 210 sk_X509_pop_free(session->x509_chain_without_leaf, X509_free); 211 session->x509_chain_without_leaf = NULL; 212 return NULL; 213 } 214 X509_up_ref(cert); 215 } 216 } 217 218 return session->x509_chain_without_leaf; 219 } 220 221 STACK_OF(X509) *SSL_get_peer_full_cert_chain(const SSL *ssl) { 222 check_ssl_x509_method(ssl); 223 SSL_SESSION *session = SSL_get_session(ssl); 224 if (session == NULL) { 225 return NULL; 226 } 227 228 return session->x509_chain; 229 } 230 231 int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose) { 232 check_ssl_ctx_x509_method(ctx); 233 return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose); 234 } 235 236 int SSL_set_purpose(SSL *ssl, int purpose) { 237 check_ssl_x509_method(ssl); 238 return X509_VERIFY_PARAM_set_purpose(ssl->param, purpose); 239 } 240 241 int SSL_CTX_set_trust(SSL_CTX *ctx, int trust) { 242 check_ssl_ctx_x509_method(ctx); 243 return X509_VERIFY_PARAM_set_trust(ctx->param, trust); 244 } 245 246 int SSL_set_trust(SSL *ssl, int trust) { 247 check_ssl_x509_method(ssl); 248 return X509_VERIFY_PARAM_set_trust(ssl->param, trust); 249 } 250 251 int SSL_CTX_set1_param(SSL_CTX *ctx, const X509_VERIFY_PARAM *param) { 252 check_ssl_ctx_x509_method(ctx); 253 return X509_VERIFY_PARAM_set1(ctx->param, param); 254 } 255 256 int SSL_set1_param(SSL *ssl, const X509_VERIFY_PARAM *param) { 257 check_ssl_x509_method(ssl); 258 return X509_VERIFY_PARAM_set1(ssl->param, param); 259 } 260 261 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) { 262 check_ssl_ctx_x509_method(ctx); 263 return ctx->param; 264 } 265 266 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) { 267 check_ssl_x509_method(ssl); 268 return ssl->param; 269 } 270 271 int SSL_get_verify_depth(const SSL *ssl) { 272 check_ssl_x509_method(ssl); 273 return X509_VERIFY_PARAM_get_depth(ssl->param); 274 } 275 276 int (*SSL_get_verify_callback(const SSL *ssl))(int, X509_STORE_CTX *) { 277 check_ssl_x509_method(ssl); 278 return ssl->verify_callback; 279 } 280 281 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) { 282 check_ssl_ctx_x509_method(ctx); 283 return ctx->verify_mode; 284 } 285 286 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) { 287 check_ssl_ctx_x509_method(ctx); 288 return X509_VERIFY_PARAM_get_depth(ctx->param); 289 } 290 291 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))( 292 int ok, X509_STORE_CTX *store_ctx) { 293 check_ssl_ctx_x509_method(ctx); 294 return ctx->default_verify_callback; 295 } 296 297 void SSL_set_verify(SSL *ssl, int mode, 298 int (*callback)(int ok, X509_STORE_CTX *store_ctx)) { 299 check_ssl_x509_method(ssl); 300 ssl->verify_mode = mode; 301 if (callback != NULL) { 302 ssl->verify_callback = callback; 303 } 304 } 305 306 void SSL_set_verify_depth(SSL *ssl, int depth) { 307 check_ssl_x509_method(ssl); 308 X509_VERIFY_PARAM_set_depth(ssl->param, depth); 309 } 310 311 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 312 int (*cb)(X509_STORE_CTX *store_ctx, 313 void *arg), 314 void *arg) { 315 check_ssl_ctx_x509_method(ctx); 316 ctx->app_verify_callback = cb; 317 ctx->app_verify_arg = arg; 318 } 319 320 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, 321 int (*cb)(int, X509_STORE_CTX *)) { 322 check_ssl_ctx_x509_method(ctx); 323 ctx->verify_mode = mode; 324 ctx->default_verify_callback = cb; 325 } 326 327 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) { 328 check_ssl_ctx_x509_method(ctx); 329 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 330 } 331 332 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) { 333 check_ssl_ctx_x509_method(ctx); 334 return X509_STORE_set_default_paths(ctx->cert_store); 335 } 336 337 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *ca_file, 338 const char *ca_dir) { 339 check_ssl_ctx_x509_method(ctx); 340 return X509_STORE_load_locations(ctx->cert_store, ca_file, ca_dir); 341 } 342 343 void SSL_set_verify_result(SSL *ssl, long result) { 344 check_ssl_x509_method(ssl); 345 if (result != X509_V_OK) { 346 abort(); 347 } 348 } 349 350 long SSL_get_verify_result(const SSL *ssl) { 351 check_ssl_x509_method(ssl); 352 SSL_SESSION *session = SSL_get_session(ssl); 353 if (session == NULL) { 354 return X509_V_ERR_INVALID_CALL; 355 } 356 return session->verify_result; 357 } 358 359 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) { 360 check_ssl_ctx_x509_method(ctx); 361 return ctx->cert_store; 362 } 363 364 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) { 365 check_ssl_ctx_x509_method(ctx); 366 X509_STORE_free(ctx->cert_store); 367 ctx->cert_store = store; 368 } 369 370 /* x509_to_buffer returns a |CRYPTO_BUFFER| that contains the serialised 371 * contents of |x509|. */ 372 static CRYPTO_BUFFER *x509_to_buffer(X509 *x509) { 373 uint8_t *buf = NULL; 374 int cert_len = i2d_X509(x509, &buf); 375 if (cert_len <= 0) { 376 return 0; 377 } 378 379 CRYPTO_BUFFER *buffer = CRYPTO_BUFFER_new(buf, cert_len, NULL); 380 OPENSSL_free(buf); 381 382 return buffer; 383 } 384 385 /* new_leafless_chain returns a fresh stack of buffers set to {NULL}. */ 386 static STACK_OF(CRYPTO_BUFFER) *new_leafless_chain(void) { 387 STACK_OF(CRYPTO_BUFFER) *chain = sk_CRYPTO_BUFFER_new_null(); 388 if (chain == NULL) { 389 return NULL; 390 } 391 392 if (!sk_CRYPTO_BUFFER_push(chain, NULL)) { 393 sk_CRYPTO_BUFFER_free(chain); 394 return NULL; 395 } 396 397 return chain; 398 } 399 400 /* ssl_cert_set_chain sets elements 1.. of |cert->chain| to the serialised 401 * forms of elements of |chain|. It returns one on success or zero on error, in 402 * which case no change to |cert->chain| is made. It preverses the existing 403 * leaf from |cert->chain|, if any. */ 404 static int ssl_cert_set_chain(CERT *cert, STACK_OF(X509) *chain) { 405 STACK_OF(CRYPTO_BUFFER) *new_chain = NULL; 406 407 if (cert->chain != NULL) { 408 new_chain = sk_CRYPTO_BUFFER_new_null(); 409 if (new_chain == NULL) { 410 return 0; 411 } 412 413 CRYPTO_BUFFER *leaf = sk_CRYPTO_BUFFER_value(cert->chain, 0); 414 if (!sk_CRYPTO_BUFFER_push(new_chain, leaf)) { 415 goto err; 416 } 417 /* |leaf| might be NULL if it's a leafless chain. */ 418 if (leaf != NULL) { 419 CRYPTO_BUFFER_up_ref(leaf); 420 } 421 } 422 423 for (size_t i = 0; i < sk_X509_num(chain); i++) { 424 if (new_chain == NULL) { 425 new_chain = new_leafless_chain(); 426 if (new_chain == NULL) { 427 goto err; 428 } 429 } 430 431 CRYPTO_BUFFER *buffer = x509_to_buffer(sk_X509_value(chain, i)); 432 if (buffer == NULL || 433 !sk_CRYPTO_BUFFER_push(new_chain, buffer)) { 434 CRYPTO_BUFFER_free(buffer); 435 goto err; 436 } 437 } 438 439 sk_CRYPTO_BUFFER_pop_free(cert->chain, CRYPTO_BUFFER_free); 440 cert->chain = new_chain; 441 442 return 1; 443 444 err: 445 sk_CRYPTO_BUFFER_pop_free(new_chain, CRYPTO_BUFFER_free); 446 return 0; 447 } 448 449 static void ssl_crypto_x509_cert_flush_cached_leaf(CERT *cert) { 450 X509_free(cert->x509_leaf); 451 cert->x509_leaf = NULL; 452 } 453 454 static void ssl_crypto_x509_cert_flush_cached_chain(CERT *cert) { 455 sk_X509_pop_free(cert->x509_chain, X509_free); 456 cert->x509_chain = NULL; 457 } 458 459 static int ssl_crypto_x509_check_client_CA_list( 460 STACK_OF(CRYPTO_BUFFER) *names) { 461 for (size_t i = 0; i < sk_CRYPTO_BUFFER_num(names); i++) { 462 const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(names, i); 463 const uint8_t *inp = CRYPTO_BUFFER_data(buffer); 464 X509_NAME *name = d2i_X509_NAME(NULL, &inp, CRYPTO_BUFFER_len(buffer)); 465 const int ok = name != NULL && inp == CRYPTO_BUFFER_data(buffer) + 466 CRYPTO_BUFFER_len(buffer); 467 X509_NAME_free(name); 468 if (!ok) { 469 return 0; 470 } 471 } 472 473 return 1; 474 } 475 476 static void ssl_crypto_x509_cert_clear(CERT *cert) { 477 ssl_crypto_x509_cert_flush_cached_leaf(cert); 478 ssl_crypto_x509_cert_flush_cached_chain(cert); 479 480 X509_free(cert->x509_stash); 481 cert->x509_stash = NULL; 482 } 483 484 static void ssl_crypto_x509_cert_free(CERT *cert) { 485 ssl_crypto_x509_cert_clear(cert); 486 X509_STORE_free(cert->verify_store); 487 } 488 489 static void ssl_crypto_x509_cert_dup(CERT *new_cert, const CERT *cert) { 490 if (cert->verify_store != NULL) { 491 X509_STORE_up_ref(cert->verify_store); 492 new_cert->verify_store = cert->verify_store; 493 } 494 } 495 496 static int ssl_crypto_x509_session_cache_objects(SSL_SESSION *sess) { 497 STACK_OF(X509) *chain = NULL; 498 const size_t num_certs = sk_CRYPTO_BUFFER_num(sess->certs); 499 500 if (num_certs > 0) { 501 chain = sk_X509_new_null(); 502 if (chain == NULL) { 503 OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); 504 goto err; 505 } 506 } 507 508 X509 *leaf = NULL; 509 for (size_t i = 0; i < num_certs; i++) { 510 X509 *x509 = X509_parse_from_buffer(sk_CRYPTO_BUFFER_value(sess->certs, i)); 511 if (x509 == NULL) { 512 OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR); 513 goto err; 514 } 515 if (!sk_X509_push(chain, x509)) { 516 OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); 517 X509_free(x509); 518 goto err; 519 } 520 if (i == 0) { 521 leaf = x509; 522 } 523 } 524 525 sk_X509_pop_free(sess->x509_chain, X509_free); 526 sess->x509_chain = chain; 527 sk_X509_pop_free(sess->x509_chain_without_leaf, X509_free); 528 sess->x509_chain_without_leaf = NULL; 529 530 X509_free(sess->x509_peer); 531 if (leaf != NULL) { 532 X509_up_ref(leaf); 533 } 534 sess->x509_peer = leaf; 535 536 return 1; 537 538 err: 539 sk_X509_pop_free(chain, X509_free); 540 return 0; 541 } 542 543 static int ssl_crypto_x509_session_dup(SSL_SESSION *new_session, 544 const SSL_SESSION *session) { 545 if (session->x509_peer != NULL) { 546 X509_up_ref(session->x509_peer); 547 new_session->x509_peer = session->x509_peer; 548 } 549 if (session->x509_chain != NULL) { 550 new_session->x509_chain = X509_chain_up_ref(session->x509_chain); 551 if (new_session->x509_chain == NULL) { 552 return 0; 553 } 554 } 555 556 return 1; 557 } 558 559 static void ssl_crypto_x509_session_clear(SSL_SESSION *session) { 560 X509_free(session->x509_peer); 561 session->x509_peer = NULL; 562 sk_X509_pop_free(session->x509_chain, X509_free); 563 session->x509_chain = NULL; 564 sk_X509_pop_free(session->x509_chain_without_leaf, X509_free); 565 session->x509_chain_without_leaf = NULL; 566 } 567 568 static int ssl_verify_alarm_type(long type) { 569 switch (type) { 570 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: 571 case X509_V_ERR_UNABLE_TO_GET_CRL: 572 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: 573 return SSL_AD_UNKNOWN_CA; 574 575 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: 576 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: 577 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: 578 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: 579 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: 580 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: 581 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: 582 case X509_V_ERR_CERT_NOT_YET_VALID: 583 case X509_V_ERR_CRL_NOT_YET_VALID: 584 case X509_V_ERR_CERT_UNTRUSTED: 585 case X509_V_ERR_CERT_REJECTED: 586 case X509_V_ERR_HOSTNAME_MISMATCH: 587 case X509_V_ERR_EMAIL_MISMATCH: 588 case X509_V_ERR_IP_ADDRESS_MISMATCH: 589 return SSL_AD_BAD_CERTIFICATE; 590 591 case X509_V_ERR_CERT_SIGNATURE_FAILURE: 592 case X509_V_ERR_CRL_SIGNATURE_FAILURE: 593 return SSL_AD_DECRYPT_ERROR; 594 595 case X509_V_ERR_CERT_HAS_EXPIRED: 596 case X509_V_ERR_CRL_HAS_EXPIRED: 597 return SSL_AD_CERTIFICATE_EXPIRED; 598 599 case X509_V_ERR_CERT_REVOKED: 600 return SSL_AD_CERTIFICATE_REVOKED; 601 602 case X509_V_ERR_UNSPECIFIED: 603 case X509_V_ERR_OUT_OF_MEM: 604 case X509_V_ERR_INVALID_CALL: 605 case X509_V_ERR_STORE_LOOKUP: 606 return SSL_AD_INTERNAL_ERROR; 607 608 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: 609 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: 610 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: 611 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: 612 case X509_V_ERR_CERT_CHAIN_TOO_LONG: 613 case X509_V_ERR_PATH_LENGTH_EXCEEDED: 614 case X509_V_ERR_INVALID_CA: 615 return SSL_AD_UNKNOWN_CA; 616 617 case X509_V_ERR_APPLICATION_VERIFICATION: 618 return SSL_AD_HANDSHAKE_FAILURE; 619 620 case X509_V_ERR_INVALID_PURPOSE: 621 return SSL_AD_UNSUPPORTED_CERTIFICATE; 622 623 default: 624 return SSL_AD_CERTIFICATE_UNKNOWN; 625 } 626 } 627 628 static int ssl_crypto_x509_session_verify_cert_chain(SSL_SESSION *session, 629 SSL *ssl) { 630 STACK_OF(X509) *const cert_chain = session->x509_chain; 631 if (cert_chain == NULL || sk_X509_num(cert_chain) == 0) { 632 return 0; 633 } 634 635 X509_STORE *verify_store = ssl->ctx->cert_store; 636 if (ssl->cert->verify_store != NULL) { 637 verify_store = ssl->cert->verify_store; 638 } 639 640 X509 *leaf = sk_X509_value(cert_chain, 0); 641 int ret = 0; 642 X509_STORE_CTX ctx; 643 if (!X509_STORE_CTX_init(&ctx, verify_store, leaf, cert_chain)) { 644 OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB); 645 return 0; 646 } 647 if (!X509_STORE_CTX_set_ex_data(&ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), 648 ssl)) { 649 goto err; 650 } 651 652 /* We need to inherit the verify parameters. These can be determined by the 653 * context: if its a server it will verify SSL client certificates or vice 654 * versa. */ 655 X509_STORE_CTX_set_default(&ctx, ssl->server ? "ssl_client" : "ssl_server"); 656 657 /* Anything non-default in "param" should overwrite anything in the ctx. */ 658 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), ssl->param); 659 660 if (ssl->verify_callback) { 661 X509_STORE_CTX_set_verify_cb(&ctx, ssl->verify_callback); 662 } 663 664 int verify_ret; 665 if (ssl->ctx->app_verify_callback != NULL) { 666 verify_ret = ssl->ctx->app_verify_callback(&ctx, ssl->ctx->app_verify_arg); 667 } else { 668 verify_ret = X509_verify_cert(&ctx); 669 } 670 671 session->verify_result = ctx.error; 672 673 /* If |SSL_VERIFY_NONE|, the error is non-fatal, but we keep the result. */ 674 if (verify_ret <= 0 && ssl->verify_mode != SSL_VERIFY_NONE) { 675 ssl3_send_alert(ssl, SSL3_AL_FATAL, ssl_verify_alarm_type(ctx.error)); 676 OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_VERIFY_FAILED); 677 goto err; 678 } 679 680 ERR_clear_error(); 681 ret = 1; 682 683 err: 684 X509_STORE_CTX_cleanup(&ctx); 685 return ret; 686 } 687 688 static void ssl_crypto_x509_hs_flush_cached_ca_names(SSL_HANDSHAKE *hs) { 689 sk_X509_NAME_pop_free(hs->cached_x509_ca_names, X509_NAME_free); 690 hs->cached_x509_ca_names = NULL; 691 } 692 693 static int ssl_crypto_x509_ssl_new(SSL *ssl) { 694 ssl->param = X509_VERIFY_PARAM_new(); 695 if (ssl->param == NULL) { 696 return 0; 697 } 698 X509_VERIFY_PARAM_inherit(ssl->param, ssl->ctx->param); 699 return 1; 700 } 701 702 static void ssl_crypto_x509_ssl_flush_cached_client_CA(SSL *ssl) { 703 sk_X509_NAME_pop_free(ssl->cached_x509_client_CA, X509_NAME_free); 704 ssl->cached_x509_client_CA = NULL; 705 } 706 707 static void ssl_crypto_x509_ssl_free(SSL *ssl) { 708 ssl_crypto_x509_ssl_flush_cached_client_CA(ssl); 709 X509_VERIFY_PARAM_free(ssl->param); 710 } 711 712 static int ssl_crypto_x509_ssl_auto_chain_if_needed(SSL *ssl) { 713 /* Only build a chain if there are no intermediates configured and the feature 714 * isn't disabled. */ 715 if ((ssl->mode & SSL_MODE_NO_AUTO_CHAIN) || 716 !ssl_has_certificate(ssl) || 717 ssl->cert->chain == NULL || 718 sk_CRYPTO_BUFFER_num(ssl->cert->chain) > 1) { 719 return 1; 720 } 721 722 X509 *leaf = 723 X509_parse_from_buffer(sk_CRYPTO_BUFFER_value(ssl->cert->chain, 0)); 724 if (!leaf) { 725 OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB); 726 return 0; 727 } 728 729 X509_STORE_CTX ctx; 730 if (!X509_STORE_CTX_init(&ctx, ssl->ctx->cert_store, leaf, NULL)) { 731 X509_free(leaf); 732 OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB); 733 return 0; 734 } 735 736 /* Attempt to build a chain, ignoring the result. */ 737 X509_verify_cert(&ctx); 738 X509_free(leaf); 739 ERR_clear_error(); 740 741 /* Remove the leaf from the generated chain. */ 742 X509_free(sk_X509_shift(ctx.chain)); 743 744 const int ok = ssl_cert_set_chain(ssl->cert, ctx.chain); 745 X509_STORE_CTX_cleanup(&ctx); 746 if (!ok) { 747 return 0; 748 } 749 750 ssl_crypto_x509_cert_flush_cached_chain(ssl->cert); 751 752 return 1; 753 } 754 755 static void ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(SSL_CTX *ctx) { 756 sk_X509_NAME_pop_free(ctx->cached_x509_client_CA, X509_NAME_free); 757 ctx->cached_x509_client_CA = NULL; 758 } 759 760 static int ssl_crypto_x509_ssl_ctx_new(SSL_CTX *ctx) { 761 ctx->cert_store = X509_STORE_new(); 762 ctx->param = X509_VERIFY_PARAM_new(); 763 return (ctx->cert_store != NULL && ctx->param != NULL); 764 } 765 766 static void ssl_crypto_x509_ssl_ctx_free(SSL_CTX *ctx) { 767 ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(ctx); 768 X509_VERIFY_PARAM_free(ctx->param); 769 X509_STORE_free(ctx->cert_store); 770 } 771 772 const SSL_X509_METHOD ssl_crypto_x509_method = { 773 ssl_crypto_x509_check_client_CA_list, 774 ssl_crypto_x509_cert_clear, 775 ssl_crypto_x509_cert_free, 776 ssl_crypto_x509_cert_dup, 777 ssl_crypto_x509_cert_flush_cached_chain, 778 ssl_crypto_x509_cert_flush_cached_leaf, 779 ssl_crypto_x509_session_cache_objects, 780 ssl_crypto_x509_session_dup, 781 ssl_crypto_x509_session_clear, 782 ssl_crypto_x509_session_verify_cert_chain, 783 ssl_crypto_x509_hs_flush_cached_ca_names, 784 ssl_crypto_x509_ssl_new, 785 ssl_crypto_x509_ssl_free, 786 ssl_crypto_x509_ssl_flush_cached_client_CA, 787 ssl_crypto_x509_ssl_auto_chain_if_needed, 788 ssl_crypto_x509_ssl_ctx_new, 789 ssl_crypto_x509_ssl_ctx_free, 790 ssl_crypto_x509_ssl_ctx_flush_cached_client_CA, 791 }; 792 793 static int ssl_use_certificate(CERT *cert, X509 *x) { 794 if (x == NULL) { 795 OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER); 796 return 0; 797 } 798 799 CRYPTO_BUFFER *buffer = x509_to_buffer(x); 800 if (buffer == NULL) { 801 return 0; 802 } 803 804 const int ok = ssl_set_cert(cert, buffer); 805 CRYPTO_BUFFER_free(buffer); 806 return ok; 807 } 808 809 int SSL_use_certificate(SSL *ssl, X509 *x) { 810 check_ssl_x509_method(ssl); 811 return ssl_use_certificate(ssl->cert, x); 812 } 813 814 int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x) { 815 check_ssl_ctx_x509_method(ctx); 816 return ssl_use_certificate(ctx->cert, x); 817 } 818 819 /* ssl_cert_cache_leaf_cert sets |cert->x509_leaf|, if currently NULL, from the 820 * first element of |cert->chain|. */ 821 static int ssl_cert_cache_leaf_cert(CERT *cert) { 822 assert(cert->x509_method); 823 824 if (cert->x509_leaf != NULL || 825 cert->chain == NULL) { 826 return 1; 827 } 828 829 CRYPTO_BUFFER *leaf = sk_CRYPTO_BUFFER_value(cert->chain, 0); 830 if (!leaf) { 831 return 1; 832 } 833 834 cert->x509_leaf = X509_parse_from_buffer(leaf); 835 return cert->x509_leaf != NULL; 836 } 837 838 static X509 *ssl_cert_get0_leaf(CERT *cert) { 839 if (cert->x509_leaf == NULL && 840 !ssl_cert_cache_leaf_cert(cert)) { 841 return NULL; 842 } 843 844 return cert->x509_leaf; 845 } 846 847 X509 *SSL_get_certificate(const SSL *ssl) { 848 check_ssl_x509_method(ssl); 849 return ssl_cert_get0_leaf(ssl->cert); 850 } 851 852 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) { 853 check_ssl_ctx_x509_method(ctx); 854 CRYPTO_MUTEX_lock_write((CRYPTO_MUTEX *) &ctx->lock); 855 X509 *ret = ssl_cert_get0_leaf(ctx->cert); 856 CRYPTO_MUTEX_unlock_write((CRYPTO_MUTEX *) &ctx->lock); 857 return ret; 858 } 859 860 static int ssl_cert_set0_chain(CERT *cert, STACK_OF(X509) *chain) { 861 if (!ssl_cert_set_chain(cert, chain)) { 862 return 0; 863 } 864 865 sk_X509_pop_free(chain, X509_free); 866 ssl_crypto_x509_cert_flush_cached_chain(cert); 867 return 1; 868 } 869 870 static int ssl_cert_set1_chain(CERT *cert, STACK_OF(X509) *chain) { 871 if (!ssl_cert_set_chain(cert, chain)) { 872 return 0; 873 } 874 875 ssl_crypto_x509_cert_flush_cached_chain(cert); 876 return 1; 877 } 878 879 static int ssl_cert_append_cert(CERT *cert, X509 *x509) { 880 assert(cert->x509_method); 881 882 CRYPTO_BUFFER *buffer = x509_to_buffer(x509); 883 if (buffer == NULL) { 884 return 0; 885 } 886 887 if (cert->chain != NULL) { 888 if (!sk_CRYPTO_BUFFER_push(cert->chain, buffer)) { 889 CRYPTO_BUFFER_free(buffer); 890 return 0; 891 } 892 893 return 1; 894 } 895 896 cert->chain = new_leafless_chain(); 897 if (cert->chain == NULL || 898 !sk_CRYPTO_BUFFER_push(cert->chain, buffer)) { 899 CRYPTO_BUFFER_free(buffer); 900 sk_CRYPTO_BUFFER_free(cert->chain); 901 cert->chain = NULL; 902 return 0; 903 } 904 905 return 1; 906 } 907 908 static int ssl_cert_add0_chain_cert(CERT *cert, X509 *x509) { 909 if (!ssl_cert_append_cert(cert, x509)) { 910 return 0; 911 } 912 913 X509_free(cert->x509_stash); 914 cert->x509_stash = x509; 915 ssl_crypto_x509_cert_flush_cached_chain(cert); 916 return 1; 917 } 918 919 static int ssl_cert_add1_chain_cert(CERT *cert, X509 *x509) { 920 if (!ssl_cert_append_cert(cert, x509)) { 921 return 0; 922 } 923 924 ssl_crypto_x509_cert_flush_cached_chain(cert); 925 return 1; 926 } 927 928 int SSL_CTX_set0_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) { 929 check_ssl_ctx_x509_method(ctx); 930 return ssl_cert_set0_chain(ctx->cert, chain); 931 } 932 933 int SSL_CTX_set1_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) { 934 check_ssl_ctx_x509_method(ctx); 935 return ssl_cert_set1_chain(ctx->cert, chain); 936 } 937 938 int SSL_set0_chain(SSL *ssl, STACK_OF(X509) *chain) { 939 check_ssl_x509_method(ssl); 940 return ssl_cert_set0_chain(ssl->cert, chain); 941 } 942 943 int SSL_set1_chain(SSL *ssl, STACK_OF(X509) *chain) { 944 check_ssl_x509_method(ssl); 945 return ssl_cert_set1_chain(ssl->cert, chain); 946 } 947 948 int SSL_CTX_add0_chain_cert(SSL_CTX *ctx, X509 *x509) { 949 check_ssl_ctx_x509_method(ctx); 950 return ssl_cert_add0_chain_cert(ctx->cert, x509); 951 } 952 953 int SSL_CTX_add1_chain_cert(SSL_CTX *ctx, X509 *x509) { 954 check_ssl_ctx_x509_method(ctx); 955 return ssl_cert_add1_chain_cert(ctx->cert, x509); 956 } 957 958 int SSL_CTX_add_extra_chain_cert(SSL_CTX *ctx, X509 *x509) { 959 check_ssl_ctx_x509_method(ctx); 960 return SSL_CTX_add0_chain_cert(ctx, x509); 961 } 962 963 int SSL_add0_chain_cert(SSL *ssl, X509 *x509) { 964 check_ssl_x509_method(ssl); 965 return ssl_cert_add0_chain_cert(ssl->cert, x509); 966 } 967 968 int SSL_add1_chain_cert(SSL *ssl, X509 *x509) { 969 check_ssl_x509_method(ssl); 970 return ssl_cert_add1_chain_cert(ssl->cert, x509); 971 } 972 973 int SSL_CTX_clear_chain_certs(SSL_CTX *ctx) { 974 check_ssl_ctx_x509_method(ctx); 975 return SSL_CTX_set0_chain(ctx, NULL); 976 } 977 978 int SSL_CTX_clear_extra_chain_certs(SSL_CTX *ctx) { 979 check_ssl_ctx_x509_method(ctx); 980 return SSL_CTX_clear_chain_certs(ctx); 981 } 982 983 int SSL_clear_chain_certs(SSL *ssl) { 984 check_ssl_x509_method(ssl); 985 return SSL_set0_chain(ssl, NULL); 986 } 987 988 /* ssl_cert_cache_chain_certs fills in |cert->x509_chain| from elements 1.. of 989 * |cert->chain|. */ 990 static int ssl_cert_cache_chain_certs(CERT *cert) { 991 assert(cert->x509_method); 992 993 if (cert->x509_chain != NULL || 994 cert->chain == NULL || 995 sk_CRYPTO_BUFFER_num(cert->chain) < 2) { 996 return 1; 997 } 998 999 STACK_OF(X509) *chain = sk_X509_new_null(); 1000 if (chain == NULL) { 1001 return 0; 1002 } 1003 1004 for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(cert->chain); i++) { 1005 CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(cert->chain, i); 1006 X509 *x509 = X509_parse_from_buffer(buffer); 1007 if (x509 == NULL || 1008 !sk_X509_push(chain, x509)) { 1009 X509_free(x509); 1010 goto err; 1011 } 1012 } 1013 1014 cert->x509_chain = chain; 1015 return 1; 1016 1017 err: 1018 sk_X509_pop_free(chain, X509_free); 1019 return 0; 1020 } 1021 1022 int SSL_CTX_get0_chain_certs(const SSL_CTX *ctx, STACK_OF(X509) **out_chain) { 1023 check_ssl_ctx_x509_method(ctx); 1024 CRYPTO_MUTEX_lock_write((CRYPTO_MUTEX *) &ctx->lock); 1025 const int ret = ssl_cert_cache_chain_certs(ctx->cert); 1026 CRYPTO_MUTEX_unlock_write((CRYPTO_MUTEX *) &ctx->lock); 1027 1028 if (!ret) { 1029 *out_chain = NULL; 1030 return 0; 1031 } 1032 1033 *out_chain = ctx->cert->x509_chain; 1034 return 1; 1035 } 1036 1037 int SSL_CTX_get_extra_chain_certs(const SSL_CTX *ctx, 1038 STACK_OF(X509) **out_chain) { 1039 return SSL_CTX_get0_chain_certs(ctx, out_chain); 1040 } 1041 1042 int SSL_get0_chain_certs(const SSL *ssl, STACK_OF(X509) **out_chain) { 1043 check_ssl_x509_method(ssl); 1044 if (!ssl_cert_cache_chain_certs(ssl->cert)) { 1045 *out_chain = NULL; 1046 return 0; 1047 } 1048 1049 *out_chain = ssl->cert->x509_chain; 1050 return 1; 1051 } 1052 1053 static SSL_SESSION *ssl_session_new_with_crypto_x509(void) { 1054 return ssl_session_new(&ssl_crypto_x509_method); 1055 } 1056 1057 SSL_SESSION *d2i_SSL_SESSION_bio(BIO *bio, SSL_SESSION **out) { 1058 return ASN1_d2i_bio_of(SSL_SESSION, ssl_session_new_with_crypto_x509, 1059 d2i_SSL_SESSION, bio, out); 1060 } 1061 1062 int i2d_SSL_SESSION_bio(BIO *bio, const SSL_SESSION *session) { 1063 return ASN1_i2d_bio_of(SSL_SESSION, i2d_SSL_SESSION, bio, session); 1064 } 1065 1066 IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION) 1067 1068 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const uint8_t **pp, long length) { 1069 if (length < 0) { 1070 OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); 1071 return NULL; 1072 } 1073 1074 CBS cbs; 1075 CBS_init(&cbs, *pp, length); 1076 1077 SSL_SESSION *ret = SSL_SESSION_parse(&cbs, &ssl_crypto_x509_method, 1078 NULL /* no buffer pool */); 1079 if (ret == NULL) { 1080 return NULL; 1081 } 1082 1083 if (a) { 1084 SSL_SESSION_free(*a); 1085 *a = ret; 1086 } 1087 *pp = CBS_data(&cbs); 1088 return ret; 1089 } 1090 1091 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *list) { 1092 return sk_X509_NAME_deep_copy(list, X509_NAME_dup, X509_NAME_free); 1093 } 1094 1095 static void set_client_CA_list(STACK_OF(CRYPTO_BUFFER) **ca_list, 1096 const STACK_OF(X509_NAME) *name_list, 1097 CRYPTO_BUFFER_POOL *pool) { 1098 STACK_OF(CRYPTO_BUFFER) *buffers = sk_CRYPTO_BUFFER_new_null(); 1099 if (buffers == NULL) { 1100 return; 1101 } 1102 1103 for (size_t i = 0; i < sk_X509_NAME_num(name_list); i++) { 1104 X509_NAME *name = sk_X509_NAME_value(name_list, i); 1105 uint8_t *outp = NULL; 1106 int len = i2d_X509_NAME(name, &outp); 1107 if (len < 0) { 1108 goto err; 1109 } 1110 1111 CRYPTO_BUFFER *buffer = CRYPTO_BUFFER_new(outp, len, pool); 1112 OPENSSL_free(outp); 1113 if (buffer == NULL || 1114 !sk_CRYPTO_BUFFER_push(buffers, buffer)) { 1115 CRYPTO_BUFFER_free(buffer); 1116 goto err; 1117 } 1118 } 1119 1120 sk_CRYPTO_BUFFER_pop_free(*ca_list, CRYPTO_BUFFER_free); 1121 *ca_list = buffers; 1122 return; 1123 1124 err: 1125 sk_CRYPTO_BUFFER_pop_free(buffers, CRYPTO_BUFFER_free); 1126 } 1127 1128 void SSL_set_client_CA_list(SSL *ssl, STACK_OF(X509_NAME) *name_list) { 1129 check_ssl_x509_method(ssl); 1130 ssl->ctx->x509_method->ssl_flush_cached_client_CA(ssl); 1131 set_client_CA_list(&ssl->client_CA, name_list, ssl->ctx->pool); 1132 sk_X509_NAME_pop_free(name_list, X509_NAME_free); 1133 } 1134 1135 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) { 1136 check_ssl_ctx_x509_method(ctx); 1137 ctx->x509_method->ssl_ctx_flush_cached_client_CA(ctx); 1138 set_client_CA_list(&ctx->client_CA, name_list, ctx->pool); 1139 sk_X509_NAME_pop_free(name_list, X509_NAME_free); 1140 } 1141 1142 static STACK_OF(X509_NAME) * 1143 buffer_names_to_x509(const STACK_OF(CRYPTO_BUFFER) *names, 1144 STACK_OF(X509_NAME) **cached) { 1145 if (names == NULL) { 1146 return NULL; 1147 } 1148 1149 if (*cached != NULL) { 1150 return *cached; 1151 } 1152 1153 STACK_OF(X509_NAME) *new_cache = sk_X509_NAME_new_null(); 1154 if (new_cache == NULL) { 1155 OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); 1156 return NULL; 1157 } 1158 1159 for (size_t i = 0; i < sk_CRYPTO_BUFFER_num(names); i++) { 1160 const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(names, i); 1161 const uint8_t *inp = CRYPTO_BUFFER_data(buffer); 1162 X509_NAME *name = d2i_X509_NAME(NULL, &inp, CRYPTO_BUFFER_len(buffer)); 1163 if (name == NULL || 1164 inp != CRYPTO_BUFFER_data(buffer) + CRYPTO_BUFFER_len(buffer) || 1165 !sk_X509_NAME_push(new_cache, name)) { 1166 X509_NAME_free(name); 1167 goto err; 1168 } 1169 } 1170 1171 *cached = new_cache; 1172 return new_cache; 1173 1174 err: 1175 sk_X509_NAME_pop_free(new_cache, X509_NAME_free); 1176 return NULL; 1177 } 1178 1179 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *ssl) { 1180 check_ssl_x509_method(ssl); 1181 /* For historical reasons, this function is used both to query configuration 1182 * state on a server as well as handshake state on a client. However, whether 1183 * |ssl| is a client or server is not known until explicitly configured with 1184 * |SSL_set_connect_state|. If |handshake_func| is NULL, |ssl| is in an 1185 * indeterminate mode and |ssl->server| is unset. */ 1186 if (ssl->handshake_func != NULL && !ssl->server) { 1187 if (ssl->s3->hs != NULL) { 1188 return buffer_names_to_x509(ssl->s3->hs->ca_names, 1189 &ssl->s3->hs->cached_x509_ca_names); 1190 } 1191 1192 return NULL; 1193 } 1194 1195 if (ssl->client_CA != NULL) { 1196 return buffer_names_to_x509( 1197 ssl->client_CA, (STACK_OF(X509_NAME) **)&ssl->cached_x509_client_CA); 1198 } 1199 return buffer_names_to_x509(ssl->ctx->client_CA, 1200 &ssl->ctx->cached_x509_client_CA); 1201 } 1202 1203 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) { 1204 check_ssl_ctx_x509_method(ctx); 1205 CRYPTO_MUTEX_lock_write((CRYPTO_MUTEX *) &ctx->lock); 1206 STACK_OF(X509_NAME) *ret = buffer_names_to_x509( 1207 ctx->client_CA, (STACK_OF(X509_NAME) **)&ctx->cached_x509_client_CA); 1208 CRYPTO_MUTEX_unlock_write((CRYPTO_MUTEX *) &ctx->lock); 1209 return ret; 1210 } 1211 1212 static int add_client_CA(STACK_OF(CRYPTO_BUFFER) **names, X509 *x509, 1213 CRYPTO_BUFFER_POOL *pool) { 1214 if (x509 == NULL) { 1215 return 0; 1216 } 1217 1218 uint8_t *outp = NULL; 1219 int len = i2d_X509_NAME(X509_get_subject_name(x509), &outp); 1220 if (len < 0) { 1221 return 0; 1222 } 1223 1224 CRYPTO_BUFFER *buffer = CRYPTO_BUFFER_new(outp, len, pool); 1225 OPENSSL_free(outp); 1226 if (buffer == NULL) { 1227 return 0; 1228 } 1229 1230 int alloced = 0; 1231 if (*names == NULL) { 1232 *names = sk_CRYPTO_BUFFER_new_null(); 1233 alloced = 1; 1234 1235 if (*names == NULL) { 1236 CRYPTO_BUFFER_free(buffer); 1237 return 0; 1238 } 1239 } 1240 1241 if (!sk_CRYPTO_BUFFER_push(*names, buffer)) { 1242 CRYPTO_BUFFER_free(buffer); 1243 if (alloced) { 1244 sk_CRYPTO_BUFFER_pop_free(*names, CRYPTO_BUFFER_free); 1245 *names = NULL; 1246 } 1247 return 0; 1248 } 1249 1250 return 1; 1251 } 1252 1253 int SSL_add_client_CA(SSL *ssl, X509 *x509) { 1254 check_ssl_x509_method(ssl); 1255 if (!add_client_CA(&ssl->client_CA, x509, ssl->ctx->pool)) { 1256 return 0; 1257 } 1258 1259 ssl_crypto_x509_ssl_flush_cached_client_CA(ssl); 1260 return 1; 1261 } 1262 1263 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x509) { 1264 check_ssl_ctx_x509_method(ctx); 1265 if (!add_client_CA(&ctx->client_CA, x509, ctx->pool)) { 1266 return 0; 1267 } 1268 1269 ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(ctx); 1270 return 1; 1271 } 1272 1273 static int do_client_cert_cb(SSL *ssl, void *arg) { 1274 if (ssl_has_certificate(ssl) || ssl->ctx->client_cert_cb == NULL) { 1275 return 1; 1276 } 1277 1278 X509 *x509 = NULL; 1279 EVP_PKEY *pkey = NULL; 1280 int ret = ssl->ctx->client_cert_cb(ssl, &x509, &pkey); 1281 if (ret < 0) { 1282 return -1; 1283 } 1284 1285 if (ret != 0) { 1286 if (!SSL_use_certificate(ssl, x509) || 1287 !SSL_use_PrivateKey(ssl, pkey)) { 1288 return 0; 1289 } 1290 } 1291 1292 X509_free(x509); 1293 EVP_PKEY_free(pkey); 1294 return 1; 1295 } 1296 1297 void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, int (*cb)(SSL *ssl, 1298 X509 **out_x509, 1299 EVP_PKEY **out_pkey)) { 1300 check_ssl_ctx_x509_method(ctx); 1301 /* Emulate the old client certificate callback with the new one. */ 1302 SSL_CTX_set_cert_cb(ctx, do_client_cert_cb, NULL); 1303 ctx->client_cert_cb = cb; 1304 } 1305 1306 static int set_cert_store(X509_STORE **store_ptr, X509_STORE *new_store, 1307 int take_ref) { 1308 X509_STORE_free(*store_ptr); 1309 *store_ptr = new_store; 1310 1311 if (new_store != NULL && take_ref) { 1312 X509_STORE_up_ref(new_store); 1313 } 1314 1315 return 1; 1316 } 1317 1318 int SSL_get_ex_data_X509_STORE_CTX_idx(void) { 1319 /* The ex_data index to go from |X509_STORE_CTX| to |SSL| always uses the 1320 * reserved app_data slot. Before ex_data was introduced, app_data was used. 1321 * Avoid breaking any software which assumes |X509_STORE_CTX_get_app_data| 1322 * works. */ 1323 return 0; 1324 } 1325 1326 int SSL_CTX_set0_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) { 1327 check_ssl_ctx_x509_method(ctx); 1328 return set_cert_store(&ctx->cert->verify_store, store, 0); 1329 } 1330 1331 int SSL_CTX_set1_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) { 1332 check_ssl_ctx_x509_method(ctx); 1333 return set_cert_store(&ctx->cert->verify_store, store, 1); 1334 } 1335 1336 int SSL_set0_verify_cert_store(SSL *ssl, X509_STORE *store) { 1337 check_ssl_x509_method(ssl); 1338 return set_cert_store(&ssl->cert->verify_store, store, 0); 1339 } 1340 1341 int SSL_set1_verify_cert_store(SSL *ssl, X509_STORE *store) { 1342 check_ssl_x509_method(ssl); 1343 return set_cert_store(&ssl->cert->verify_store, store, 1); 1344 } 1345
