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 bssl::UniquePtr<STACK_OF(X509)> chain; 498 const size_t num_certs = sk_CRYPTO_BUFFER_num(sess->certs); 499 if (num_certs > 0) { 500 chain.reset(sk_X509_new_null()); 501 if (!chain) { 502 OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); 503 return 0; 504 } 505 } 506 507 X509 *leaf = NULL; 508 for (size_t i = 0; i < num_certs; i++) { 509 X509 *x509 = X509_parse_from_buffer(sk_CRYPTO_BUFFER_value(sess->certs, i)); 510 if (x509 == NULL) { 511 OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR); 512 return 0; 513 } 514 if (!sk_X509_push(chain.get(), x509)) { 515 OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); 516 X509_free(x509); 517 return 0; 518 } 519 if (i == 0) { 520 leaf = x509; 521 } 522 } 523 524 sk_X509_pop_free(sess->x509_chain, X509_free); 525 sess->x509_chain = chain.release(); 526 sk_X509_pop_free(sess->x509_chain_without_leaf, X509_free); 527 sess->x509_chain_without_leaf = NULL; 528 529 X509_free(sess->x509_peer); 530 if (leaf != NULL) { 531 X509_up_ref(leaf); 532 } 533 sess->x509_peer = leaf; 534 return 1; 535 } 536 537 static int ssl_crypto_x509_session_dup(SSL_SESSION *new_session, 538 const SSL_SESSION *session) { 539 if (session->x509_peer != NULL) { 540 X509_up_ref(session->x509_peer); 541 new_session->x509_peer = session->x509_peer; 542 } 543 if (session->x509_chain != NULL) { 544 new_session->x509_chain = X509_chain_up_ref(session->x509_chain); 545 if (new_session->x509_chain == NULL) { 546 return 0; 547 } 548 } 549 550 return 1; 551 } 552 553 static void ssl_crypto_x509_session_clear(SSL_SESSION *session) { 554 X509_free(session->x509_peer); 555 session->x509_peer = NULL; 556 sk_X509_pop_free(session->x509_chain, X509_free); 557 session->x509_chain = NULL; 558 sk_X509_pop_free(session->x509_chain_without_leaf, X509_free); 559 session->x509_chain_without_leaf = NULL; 560 } 561 562 static int ssl_verify_alarm_type(long type) { 563 switch (type) { 564 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: 565 case X509_V_ERR_UNABLE_TO_GET_CRL: 566 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: 567 return SSL_AD_UNKNOWN_CA; 568 569 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: 570 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: 571 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: 572 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: 573 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: 574 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: 575 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: 576 case X509_V_ERR_CERT_NOT_YET_VALID: 577 case X509_V_ERR_CRL_NOT_YET_VALID: 578 case X509_V_ERR_CERT_UNTRUSTED: 579 case X509_V_ERR_CERT_REJECTED: 580 case X509_V_ERR_HOSTNAME_MISMATCH: 581 case X509_V_ERR_EMAIL_MISMATCH: 582 case X509_V_ERR_IP_ADDRESS_MISMATCH: 583 return SSL_AD_BAD_CERTIFICATE; 584 585 case X509_V_ERR_CERT_SIGNATURE_FAILURE: 586 case X509_V_ERR_CRL_SIGNATURE_FAILURE: 587 return SSL_AD_DECRYPT_ERROR; 588 589 case X509_V_ERR_CERT_HAS_EXPIRED: 590 case X509_V_ERR_CRL_HAS_EXPIRED: 591 return SSL_AD_CERTIFICATE_EXPIRED; 592 593 case X509_V_ERR_CERT_REVOKED: 594 return SSL_AD_CERTIFICATE_REVOKED; 595 596 case X509_V_ERR_UNSPECIFIED: 597 case X509_V_ERR_OUT_OF_MEM: 598 case X509_V_ERR_INVALID_CALL: 599 case X509_V_ERR_STORE_LOOKUP: 600 return SSL_AD_INTERNAL_ERROR; 601 602 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: 603 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: 604 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: 605 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: 606 case X509_V_ERR_CERT_CHAIN_TOO_LONG: 607 case X509_V_ERR_PATH_LENGTH_EXCEEDED: 608 case X509_V_ERR_INVALID_CA: 609 return SSL_AD_UNKNOWN_CA; 610 611 case X509_V_ERR_APPLICATION_VERIFICATION: 612 return SSL_AD_HANDSHAKE_FAILURE; 613 614 case X509_V_ERR_INVALID_PURPOSE: 615 return SSL_AD_UNSUPPORTED_CERTIFICATE; 616 617 default: 618 return SSL_AD_CERTIFICATE_UNKNOWN; 619 } 620 } 621 622 static int ssl_crypto_x509_session_verify_cert_chain(SSL_SESSION *session, 623 SSL *ssl) { 624 STACK_OF(X509) *const cert_chain = session->x509_chain; 625 if (cert_chain == NULL || sk_X509_num(cert_chain) == 0) { 626 return 0; 627 } 628 629 X509_STORE *verify_store = ssl->ctx->cert_store; 630 if (ssl->cert->verify_store != NULL) { 631 verify_store = ssl->cert->verify_store; 632 } 633 634 X509 *leaf = sk_X509_value(cert_chain, 0); 635 int ret = 0; 636 X509_STORE_CTX ctx; 637 if (!X509_STORE_CTX_init(&ctx, verify_store, leaf, cert_chain)) { 638 OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB); 639 return 0; 640 } 641 if (!X509_STORE_CTX_set_ex_data(&ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), 642 ssl)) { 643 goto err; 644 } 645 646 /* We need to inherit the verify parameters. These can be determined by the 647 * context: if its a server it will verify SSL client certificates or vice 648 * versa. */ 649 X509_STORE_CTX_set_default(&ctx, ssl->server ? "ssl_client" : "ssl_server"); 650 651 /* Anything non-default in "param" should overwrite anything in the ctx. */ 652 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), ssl->param); 653 654 if (ssl->verify_callback) { 655 X509_STORE_CTX_set_verify_cb(&ctx, ssl->verify_callback); 656 } 657 658 int verify_ret; 659 if (ssl->ctx->app_verify_callback != NULL) { 660 verify_ret = ssl->ctx->app_verify_callback(&ctx, ssl->ctx->app_verify_arg); 661 } else { 662 verify_ret = X509_verify_cert(&ctx); 663 } 664 665 session->verify_result = ctx.error; 666 667 /* If |SSL_VERIFY_NONE|, the error is non-fatal, but we keep the result. */ 668 if (verify_ret <= 0 && ssl->verify_mode != SSL_VERIFY_NONE) { 669 ssl3_send_alert(ssl, SSL3_AL_FATAL, ssl_verify_alarm_type(ctx.error)); 670 OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_VERIFY_FAILED); 671 goto err; 672 } 673 674 ERR_clear_error(); 675 ret = 1; 676 677 err: 678 X509_STORE_CTX_cleanup(&ctx); 679 return ret; 680 } 681 682 static void ssl_crypto_x509_hs_flush_cached_ca_names(SSL_HANDSHAKE *hs) { 683 sk_X509_NAME_pop_free(hs->cached_x509_ca_names, X509_NAME_free); 684 hs->cached_x509_ca_names = NULL; 685 } 686 687 static int ssl_crypto_x509_ssl_new(SSL *ssl) { 688 ssl->param = X509_VERIFY_PARAM_new(); 689 if (ssl->param == NULL) { 690 return 0; 691 } 692 X509_VERIFY_PARAM_inherit(ssl->param, ssl->ctx->param); 693 return 1; 694 } 695 696 static void ssl_crypto_x509_ssl_flush_cached_client_CA(SSL *ssl) { 697 sk_X509_NAME_pop_free(ssl->cached_x509_client_CA, X509_NAME_free); 698 ssl->cached_x509_client_CA = NULL; 699 } 700 701 static void ssl_crypto_x509_ssl_free(SSL *ssl) { 702 ssl_crypto_x509_ssl_flush_cached_client_CA(ssl); 703 X509_VERIFY_PARAM_free(ssl->param); 704 } 705 706 static int ssl_crypto_x509_ssl_auto_chain_if_needed(SSL *ssl) { 707 /* Only build a chain if there are no intermediates configured and the feature 708 * isn't disabled. */ 709 if ((ssl->mode & SSL_MODE_NO_AUTO_CHAIN) || 710 !ssl_has_certificate(ssl) || 711 ssl->cert->chain == NULL || 712 sk_CRYPTO_BUFFER_num(ssl->cert->chain) > 1) { 713 return 1; 714 } 715 716 X509 *leaf = 717 X509_parse_from_buffer(sk_CRYPTO_BUFFER_value(ssl->cert->chain, 0)); 718 if (!leaf) { 719 OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB); 720 return 0; 721 } 722 723 X509_STORE_CTX ctx; 724 if (!X509_STORE_CTX_init(&ctx, ssl->ctx->cert_store, leaf, NULL)) { 725 X509_free(leaf); 726 OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB); 727 return 0; 728 } 729 730 /* Attempt to build a chain, ignoring the result. */ 731 X509_verify_cert(&ctx); 732 X509_free(leaf); 733 ERR_clear_error(); 734 735 /* Remove the leaf from the generated chain. */ 736 X509_free(sk_X509_shift(ctx.chain)); 737 738 const int ok = ssl_cert_set_chain(ssl->cert, ctx.chain); 739 X509_STORE_CTX_cleanup(&ctx); 740 if (!ok) { 741 return 0; 742 } 743 744 ssl_crypto_x509_cert_flush_cached_chain(ssl->cert); 745 746 return 1; 747 } 748 749 static void ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(SSL_CTX *ctx) { 750 sk_X509_NAME_pop_free(ctx->cached_x509_client_CA, X509_NAME_free); 751 ctx->cached_x509_client_CA = NULL; 752 } 753 754 static int ssl_crypto_x509_ssl_ctx_new(SSL_CTX *ctx) { 755 ctx->cert_store = X509_STORE_new(); 756 ctx->param = X509_VERIFY_PARAM_new(); 757 return (ctx->cert_store != NULL && ctx->param != NULL); 758 } 759 760 static void ssl_crypto_x509_ssl_ctx_free(SSL_CTX *ctx) { 761 ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(ctx); 762 X509_VERIFY_PARAM_free(ctx->param); 763 X509_STORE_free(ctx->cert_store); 764 } 765 766 const SSL_X509_METHOD ssl_crypto_x509_method = { 767 ssl_crypto_x509_check_client_CA_list, 768 ssl_crypto_x509_cert_clear, 769 ssl_crypto_x509_cert_free, 770 ssl_crypto_x509_cert_dup, 771 ssl_crypto_x509_cert_flush_cached_chain, 772 ssl_crypto_x509_cert_flush_cached_leaf, 773 ssl_crypto_x509_session_cache_objects, 774 ssl_crypto_x509_session_dup, 775 ssl_crypto_x509_session_clear, 776 ssl_crypto_x509_session_verify_cert_chain, 777 ssl_crypto_x509_hs_flush_cached_ca_names, 778 ssl_crypto_x509_ssl_new, 779 ssl_crypto_x509_ssl_free, 780 ssl_crypto_x509_ssl_flush_cached_client_CA, 781 ssl_crypto_x509_ssl_auto_chain_if_needed, 782 ssl_crypto_x509_ssl_ctx_new, 783 ssl_crypto_x509_ssl_ctx_free, 784 ssl_crypto_x509_ssl_ctx_flush_cached_client_CA, 785 }; 786 787 static int ssl_use_certificate(CERT *cert, X509 *x) { 788 if (x == NULL) { 789 OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER); 790 return 0; 791 } 792 793 CRYPTO_BUFFER *buffer = x509_to_buffer(x); 794 if (buffer == NULL) { 795 return 0; 796 } 797 798 const int ok = ssl_set_cert(cert, buffer); 799 CRYPTO_BUFFER_free(buffer); 800 return ok; 801 } 802 803 int SSL_use_certificate(SSL *ssl, X509 *x) { 804 check_ssl_x509_method(ssl); 805 return ssl_use_certificate(ssl->cert, x); 806 } 807 808 int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x) { 809 check_ssl_ctx_x509_method(ctx); 810 return ssl_use_certificate(ctx->cert, x); 811 } 812 813 /* ssl_cert_cache_leaf_cert sets |cert->x509_leaf|, if currently NULL, from the 814 * first element of |cert->chain|. */ 815 static int ssl_cert_cache_leaf_cert(CERT *cert) { 816 assert(cert->x509_method); 817 818 if (cert->x509_leaf != NULL || 819 cert->chain == NULL) { 820 return 1; 821 } 822 823 CRYPTO_BUFFER *leaf = sk_CRYPTO_BUFFER_value(cert->chain, 0); 824 if (!leaf) { 825 return 1; 826 } 827 828 cert->x509_leaf = X509_parse_from_buffer(leaf); 829 return cert->x509_leaf != NULL; 830 } 831 832 static X509 *ssl_cert_get0_leaf(CERT *cert) { 833 if (cert->x509_leaf == NULL && 834 !ssl_cert_cache_leaf_cert(cert)) { 835 return NULL; 836 } 837 838 return cert->x509_leaf; 839 } 840 841 X509 *SSL_get_certificate(const SSL *ssl) { 842 check_ssl_x509_method(ssl); 843 return ssl_cert_get0_leaf(ssl->cert); 844 } 845 846 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) { 847 check_ssl_ctx_x509_method(ctx); 848 CRYPTO_MUTEX_lock_write((CRYPTO_MUTEX *) &ctx->lock); 849 X509 *ret = ssl_cert_get0_leaf(ctx->cert); 850 CRYPTO_MUTEX_unlock_write((CRYPTO_MUTEX *) &ctx->lock); 851 return ret; 852 } 853 854 static int ssl_cert_set0_chain(CERT *cert, STACK_OF(X509) *chain) { 855 if (!ssl_cert_set_chain(cert, chain)) { 856 return 0; 857 } 858 859 sk_X509_pop_free(chain, X509_free); 860 ssl_crypto_x509_cert_flush_cached_chain(cert); 861 return 1; 862 } 863 864 static int ssl_cert_set1_chain(CERT *cert, STACK_OF(X509) *chain) { 865 if (!ssl_cert_set_chain(cert, chain)) { 866 return 0; 867 } 868 869 ssl_crypto_x509_cert_flush_cached_chain(cert); 870 return 1; 871 } 872 873 static int ssl_cert_append_cert(CERT *cert, X509 *x509) { 874 assert(cert->x509_method); 875 876 CRYPTO_BUFFER *buffer = x509_to_buffer(x509); 877 if (buffer == NULL) { 878 return 0; 879 } 880 881 if (cert->chain != NULL) { 882 if (!sk_CRYPTO_BUFFER_push(cert->chain, buffer)) { 883 CRYPTO_BUFFER_free(buffer); 884 return 0; 885 } 886 887 return 1; 888 } 889 890 cert->chain = new_leafless_chain(); 891 if (cert->chain == NULL || 892 !sk_CRYPTO_BUFFER_push(cert->chain, buffer)) { 893 CRYPTO_BUFFER_free(buffer); 894 sk_CRYPTO_BUFFER_free(cert->chain); 895 cert->chain = NULL; 896 return 0; 897 } 898 899 return 1; 900 } 901 902 static int ssl_cert_add0_chain_cert(CERT *cert, X509 *x509) { 903 if (!ssl_cert_append_cert(cert, x509)) { 904 return 0; 905 } 906 907 X509_free(cert->x509_stash); 908 cert->x509_stash = x509; 909 ssl_crypto_x509_cert_flush_cached_chain(cert); 910 return 1; 911 } 912 913 static int ssl_cert_add1_chain_cert(CERT *cert, X509 *x509) { 914 if (!ssl_cert_append_cert(cert, x509)) { 915 return 0; 916 } 917 918 ssl_crypto_x509_cert_flush_cached_chain(cert); 919 return 1; 920 } 921 922 int SSL_CTX_set0_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) { 923 check_ssl_ctx_x509_method(ctx); 924 return ssl_cert_set0_chain(ctx->cert, chain); 925 } 926 927 int SSL_CTX_set1_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) { 928 check_ssl_ctx_x509_method(ctx); 929 return ssl_cert_set1_chain(ctx->cert, chain); 930 } 931 932 int SSL_set0_chain(SSL *ssl, STACK_OF(X509) *chain) { 933 check_ssl_x509_method(ssl); 934 return ssl_cert_set0_chain(ssl->cert, chain); 935 } 936 937 int SSL_set1_chain(SSL *ssl, STACK_OF(X509) *chain) { 938 check_ssl_x509_method(ssl); 939 return ssl_cert_set1_chain(ssl->cert, chain); 940 } 941 942 int SSL_CTX_add0_chain_cert(SSL_CTX *ctx, X509 *x509) { 943 check_ssl_ctx_x509_method(ctx); 944 return ssl_cert_add0_chain_cert(ctx->cert, x509); 945 } 946 947 int SSL_CTX_add1_chain_cert(SSL_CTX *ctx, X509 *x509) { 948 check_ssl_ctx_x509_method(ctx); 949 return ssl_cert_add1_chain_cert(ctx->cert, x509); 950 } 951 952 int SSL_CTX_add_extra_chain_cert(SSL_CTX *ctx, X509 *x509) { 953 check_ssl_ctx_x509_method(ctx); 954 return SSL_CTX_add0_chain_cert(ctx, x509); 955 } 956 957 int SSL_add0_chain_cert(SSL *ssl, X509 *x509) { 958 check_ssl_x509_method(ssl); 959 return ssl_cert_add0_chain_cert(ssl->cert, x509); 960 } 961 962 int SSL_add1_chain_cert(SSL *ssl, X509 *x509) { 963 check_ssl_x509_method(ssl); 964 return ssl_cert_add1_chain_cert(ssl->cert, x509); 965 } 966 967 int SSL_CTX_clear_chain_certs(SSL_CTX *ctx) { 968 check_ssl_ctx_x509_method(ctx); 969 return SSL_CTX_set0_chain(ctx, NULL); 970 } 971 972 int SSL_CTX_clear_extra_chain_certs(SSL_CTX *ctx) { 973 check_ssl_ctx_x509_method(ctx); 974 return SSL_CTX_clear_chain_certs(ctx); 975 } 976 977 int SSL_clear_chain_certs(SSL *ssl) { 978 check_ssl_x509_method(ssl); 979 return SSL_set0_chain(ssl, NULL); 980 } 981 982 /* ssl_cert_cache_chain_certs fills in |cert->x509_chain| from elements 1.. of 983 * |cert->chain|. */ 984 static int ssl_cert_cache_chain_certs(CERT *cert) { 985 assert(cert->x509_method); 986 987 if (cert->x509_chain != NULL || 988 cert->chain == NULL || 989 sk_CRYPTO_BUFFER_num(cert->chain) < 2) { 990 return 1; 991 } 992 993 STACK_OF(X509) *chain = sk_X509_new_null(); 994 if (chain == NULL) { 995 return 0; 996 } 997 998 for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(cert->chain); i++) { 999 CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(cert->chain, i); 1000 X509 *x509 = X509_parse_from_buffer(buffer); 1001 if (x509 == NULL || 1002 !sk_X509_push(chain, x509)) { 1003 X509_free(x509); 1004 goto err; 1005 } 1006 } 1007 1008 cert->x509_chain = chain; 1009 return 1; 1010 1011 err: 1012 sk_X509_pop_free(chain, X509_free); 1013 return 0; 1014 } 1015 1016 int SSL_CTX_get0_chain_certs(const SSL_CTX *ctx, STACK_OF(X509) **out_chain) { 1017 check_ssl_ctx_x509_method(ctx); 1018 CRYPTO_MUTEX_lock_write((CRYPTO_MUTEX *) &ctx->lock); 1019 const int ret = ssl_cert_cache_chain_certs(ctx->cert); 1020 CRYPTO_MUTEX_unlock_write((CRYPTO_MUTEX *) &ctx->lock); 1021 1022 if (!ret) { 1023 *out_chain = NULL; 1024 return 0; 1025 } 1026 1027 *out_chain = ctx->cert->x509_chain; 1028 return 1; 1029 } 1030 1031 int SSL_CTX_get_extra_chain_certs(const SSL_CTX *ctx, 1032 STACK_OF(X509) **out_chain) { 1033 return SSL_CTX_get0_chain_certs(ctx, out_chain); 1034 } 1035 1036 int SSL_get0_chain_certs(const SSL *ssl, STACK_OF(X509) **out_chain) { 1037 check_ssl_x509_method(ssl); 1038 if (!ssl_cert_cache_chain_certs(ssl->cert)) { 1039 *out_chain = NULL; 1040 return 0; 1041 } 1042 1043 *out_chain = ssl->cert->x509_chain; 1044 return 1; 1045 } 1046 1047 static SSL_SESSION *ssl_session_new_with_crypto_x509(void) { 1048 return ssl_session_new(&ssl_crypto_x509_method); 1049 } 1050 1051 SSL_SESSION *d2i_SSL_SESSION_bio(BIO *bio, SSL_SESSION **out) { 1052 return ASN1_d2i_bio_of(SSL_SESSION, ssl_session_new_with_crypto_x509, 1053 d2i_SSL_SESSION, bio, out); 1054 } 1055 1056 int i2d_SSL_SESSION_bio(BIO *bio, const SSL_SESSION *session) { 1057 return ASN1_i2d_bio_of(SSL_SESSION, i2d_SSL_SESSION, bio, session); 1058 } 1059 1060 IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION) 1061 1062 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const uint8_t **pp, long length) { 1063 if (length < 0) { 1064 OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); 1065 return NULL; 1066 } 1067 1068 CBS cbs; 1069 CBS_init(&cbs, *pp, length); 1070 1071 SSL_SESSION *ret = SSL_SESSION_parse(&cbs, &ssl_crypto_x509_method, 1072 NULL /* no buffer pool */); 1073 if (ret == NULL) { 1074 return NULL; 1075 } 1076 1077 if (a) { 1078 SSL_SESSION_free(*a); 1079 *a = ret; 1080 } 1081 *pp = CBS_data(&cbs); 1082 return ret; 1083 } 1084 1085 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *list) { 1086 return sk_X509_NAME_deep_copy(list, X509_NAME_dup, X509_NAME_free); 1087 } 1088 1089 static void set_client_CA_list(STACK_OF(CRYPTO_BUFFER) **ca_list, 1090 const STACK_OF(X509_NAME) *name_list, 1091 CRYPTO_BUFFER_POOL *pool) { 1092 STACK_OF(CRYPTO_BUFFER) *buffers = sk_CRYPTO_BUFFER_new_null(); 1093 if (buffers == NULL) { 1094 return; 1095 } 1096 1097 for (size_t i = 0; i < sk_X509_NAME_num(name_list); i++) { 1098 X509_NAME *name = sk_X509_NAME_value(name_list, i); 1099 uint8_t *outp = NULL; 1100 int len = i2d_X509_NAME(name, &outp); 1101 if (len < 0) { 1102 goto err; 1103 } 1104 1105 CRYPTO_BUFFER *buffer = CRYPTO_BUFFER_new(outp, len, pool); 1106 OPENSSL_free(outp); 1107 if (buffer == NULL || 1108 !sk_CRYPTO_BUFFER_push(buffers, buffer)) { 1109 CRYPTO_BUFFER_free(buffer); 1110 goto err; 1111 } 1112 } 1113 1114 sk_CRYPTO_BUFFER_pop_free(*ca_list, CRYPTO_BUFFER_free); 1115 *ca_list = buffers; 1116 return; 1117 1118 err: 1119 sk_CRYPTO_BUFFER_pop_free(buffers, CRYPTO_BUFFER_free); 1120 } 1121 1122 void SSL_set_client_CA_list(SSL *ssl, STACK_OF(X509_NAME) *name_list) { 1123 check_ssl_x509_method(ssl); 1124 ssl->ctx->x509_method->ssl_flush_cached_client_CA(ssl); 1125 set_client_CA_list(&ssl->client_CA, name_list, ssl->ctx->pool); 1126 sk_X509_NAME_pop_free(name_list, X509_NAME_free); 1127 } 1128 1129 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) { 1130 check_ssl_ctx_x509_method(ctx); 1131 ctx->x509_method->ssl_ctx_flush_cached_client_CA(ctx); 1132 set_client_CA_list(&ctx->client_CA, name_list, ctx->pool); 1133 sk_X509_NAME_pop_free(name_list, X509_NAME_free); 1134 } 1135 1136 static STACK_OF(X509_NAME) * 1137 buffer_names_to_x509(const STACK_OF(CRYPTO_BUFFER) *names, 1138 STACK_OF(X509_NAME) **cached) { 1139 if (names == NULL) { 1140 return NULL; 1141 } 1142 1143 if (*cached != NULL) { 1144 return *cached; 1145 } 1146 1147 STACK_OF(X509_NAME) *new_cache = sk_X509_NAME_new_null(); 1148 if (new_cache == NULL) { 1149 OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); 1150 return NULL; 1151 } 1152 1153 for (size_t i = 0; i < sk_CRYPTO_BUFFER_num(names); i++) { 1154 const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(names, i); 1155 const uint8_t *inp = CRYPTO_BUFFER_data(buffer); 1156 X509_NAME *name = d2i_X509_NAME(NULL, &inp, CRYPTO_BUFFER_len(buffer)); 1157 if (name == NULL || 1158 inp != CRYPTO_BUFFER_data(buffer) + CRYPTO_BUFFER_len(buffer) || 1159 !sk_X509_NAME_push(new_cache, name)) { 1160 X509_NAME_free(name); 1161 goto err; 1162 } 1163 } 1164 1165 *cached = new_cache; 1166 return new_cache; 1167 1168 err: 1169 sk_X509_NAME_pop_free(new_cache, X509_NAME_free); 1170 return NULL; 1171 } 1172 1173 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *ssl) { 1174 check_ssl_x509_method(ssl); 1175 /* For historical reasons, this function is used both to query configuration 1176 * state on a server as well as handshake state on a client. However, whether 1177 * |ssl| is a client or server is not known until explicitly configured with 1178 * |SSL_set_connect_state|. If |handshake_func| is NULL, |ssl| is in an 1179 * indeterminate mode and |ssl->server| is unset. */ 1180 if (ssl->handshake_func != NULL && !ssl->server) { 1181 if (ssl->s3->hs != NULL) { 1182 return buffer_names_to_x509(ssl->s3->hs->ca_names, 1183 &ssl->s3->hs->cached_x509_ca_names); 1184 } 1185 1186 return NULL; 1187 } 1188 1189 if (ssl->client_CA != NULL) { 1190 return buffer_names_to_x509( 1191 ssl->client_CA, (STACK_OF(X509_NAME) **)&ssl->cached_x509_client_CA); 1192 } 1193 return buffer_names_to_x509(ssl->ctx->client_CA, 1194 &ssl->ctx->cached_x509_client_CA); 1195 } 1196 1197 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) { 1198 check_ssl_ctx_x509_method(ctx); 1199 CRYPTO_MUTEX_lock_write((CRYPTO_MUTEX *) &ctx->lock); 1200 STACK_OF(X509_NAME) *ret = buffer_names_to_x509( 1201 ctx->client_CA, (STACK_OF(X509_NAME) **)&ctx->cached_x509_client_CA); 1202 CRYPTO_MUTEX_unlock_write((CRYPTO_MUTEX *) &ctx->lock); 1203 return ret; 1204 } 1205 1206 static int add_client_CA(STACK_OF(CRYPTO_BUFFER) **names, X509 *x509, 1207 CRYPTO_BUFFER_POOL *pool) { 1208 if (x509 == NULL) { 1209 return 0; 1210 } 1211 1212 uint8_t *outp = NULL; 1213 int len = i2d_X509_NAME(X509_get_subject_name(x509), &outp); 1214 if (len < 0) { 1215 return 0; 1216 } 1217 1218 CRYPTO_BUFFER *buffer = CRYPTO_BUFFER_new(outp, len, pool); 1219 OPENSSL_free(outp); 1220 if (buffer == NULL) { 1221 return 0; 1222 } 1223 1224 int alloced = 0; 1225 if (*names == NULL) { 1226 *names = sk_CRYPTO_BUFFER_new_null(); 1227 alloced = 1; 1228 1229 if (*names == NULL) { 1230 CRYPTO_BUFFER_free(buffer); 1231 return 0; 1232 } 1233 } 1234 1235 if (!sk_CRYPTO_BUFFER_push(*names, buffer)) { 1236 CRYPTO_BUFFER_free(buffer); 1237 if (alloced) { 1238 sk_CRYPTO_BUFFER_pop_free(*names, CRYPTO_BUFFER_free); 1239 *names = NULL; 1240 } 1241 return 0; 1242 } 1243 1244 return 1; 1245 } 1246 1247 int SSL_add_client_CA(SSL *ssl, X509 *x509) { 1248 check_ssl_x509_method(ssl); 1249 if (!add_client_CA(&ssl->client_CA, x509, ssl->ctx->pool)) { 1250 return 0; 1251 } 1252 1253 ssl_crypto_x509_ssl_flush_cached_client_CA(ssl); 1254 return 1; 1255 } 1256 1257 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x509) { 1258 check_ssl_ctx_x509_method(ctx); 1259 if (!add_client_CA(&ctx->client_CA, x509, ctx->pool)) { 1260 return 0; 1261 } 1262 1263 ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(ctx); 1264 return 1; 1265 } 1266 1267 static int do_client_cert_cb(SSL *ssl, void *arg) { 1268 if (ssl_has_certificate(ssl) || ssl->ctx->client_cert_cb == NULL) { 1269 return 1; 1270 } 1271 1272 X509 *x509 = NULL; 1273 EVP_PKEY *pkey = NULL; 1274 int ret = ssl->ctx->client_cert_cb(ssl, &x509, &pkey); 1275 if (ret < 0) { 1276 return -1; 1277 } 1278 1279 if (ret != 0) { 1280 if (!SSL_use_certificate(ssl, x509) || 1281 !SSL_use_PrivateKey(ssl, pkey)) { 1282 return 0; 1283 } 1284 } 1285 1286 X509_free(x509); 1287 EVP_PKEY_free(pkey); 1288 return 1; 1289 } 1290 1291 void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, int (*cb)(SSL *ssl, 1292 X509 **out_x509, 1293 EVP_PKEY **out_pkey)) { 1294 check_ssl_ctx_x509_method(ctx); 1295 /* Emulate the old client certificate callback with the new one. */ 1296 SSL_CTX_set_cert_cb(ctx, do_client_cert_cb, NULL); 1297 ctx->client_cert_cb = cb; 1298 } 1299 1300 static int set_cert_store(X509_STORE **store_ptr, X509_STORE *new_store, 1301 int take_ref) { 1302 X509_STORE_free(*store_ptr); 1303 *store_ptr = new_store; 1304 1305 if (new_store != NULL && take_ref) { 1306 X509_STORE_up_ref(new_store); 1307 } 1308 1309 return 1; 1310 } 1311 1312 int SSL_get_ex_data_X509_STORE_CTX_idx(void) { 1313 /* The ex_data index to go from |X509_STORE_CTX| to |SSL| always uses the 1314 * reserved app_data slot. Before ex_data was introduced, app_data was used. 1315 * Avoid breaking any software which assumes |X509_STORE_CTX_get_app_data| 1316 * works. */ 1317 return 0; 1318 } 1319 1320 int SSL_CTX_set0_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) { 1321 check_ssl_ctx_x509_method(ctx); 1322 return set_cert_store(&ctx->cert->verify_store, store, 0); 1323 } 1324 1325 int SSL_CTX_set1_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) { 1326 check_ssl_ctx_x509_method(ctx); 1327 return set_cert_store(&ctx->cert->verify_store, store, 1); 1328 } 1329 1330 int SSL_set0_verify_cert_store(SSL *ssl, X509_STORE *store) { 1331 check_ssl_x509_method(ssl); 1332 return set_cert_store(&ssl->cert->verify_store, store, 0); 1333 } 1334 1335 int SSL_set1_verify_cert_store(SSL *ssl, X509_STORE *store) { 1336 check_ssl_x509_method(ssl); 1337 return set_cert_store(&ssl->cert->verify_store, store, 1); 1338 } 1339
