1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
/* ====================================================================
* Copyright 2005 Nokia. All rights reserved.
*
* The portions of the attached software ("Contribution") is developed by
* Nokia Corporation and is licensed pursuant to the OpenSSL open source
* license.
*
* The Contribution, originally written by Mika Kousa and Pasi Eronen of
* Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
* support (see RFC 4279) to OpenSSL.
*
* No patent licenses or other rights except those expressly stated in
* the OpenSSL open source license shall be deemed granted or received
* expressly, by implication, estoppel, or otherwise.
*
* No assurances are provided by Nokia that the Contribution does not
* infringe the patent or other intellectual property rights of any third
* party or that the license provides you with all the necessary rights
* to make use of the Contribution.
*
* THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
* ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
* SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
* OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
* OTHERWISE. */
#include <CNIOBoringSSL_ssl.h>
#include <limits.h>
#include <string.h>
#include <utility>
#include <CNIOBoringSSL_bytestring.h>
#include <CNIOBoringSSL_err.h>
#include <CNIOBoringSSL_mem.h>
#include <CNIOBoringSSL_x509.h>
#include "../crypto/internal.h"
#include "internal.h"
BSSL_NAMESPACE_BEGIN
// An SSL_SESSION is serialized as the following ASN.1 structure:
//
// SSLSession ::= SEQUENCE {
// version INTEGER (1), -- session structure version
// sslVersion INTEGER, -- protocol version number
// cipher OCTET STRING, -- two bytes long
// sessionID OCTET STRING,
// secret OCTET STRING,
// time [1] INTEGER, -- seconds since UNIX epoch
// timeout [2] INTEGER, -- in seconds
// peer [3] Certificate OPTIONAL,
// sessionIDContext [4] OCTET STRING OPTIONAL,
// verifyResult [5] INTEGER OPTIONAL, -- one of X509_V_* codes
// pskIdentity [8] OCTET STRING OPTIONAL,
// ticketLifetimeHint [9] INTEGER OPTIONAL, -- client-only
// ticket [10] OCTET STRING OPTIONAL, -- client-only
// peerSHA256 [13] OCTET STRING OPTIONAL,
// originalHandshakeHash [14] OCTET STRING OPTIONAL,
// signedCertTimestampList [15] OCTET STRING OPTIONAL,
// -- contents of SCT extension
// ocspResponse [16] OCTET STRING OPTIONAL,
// -- stapled OCSP response from the server
// extendedMasterSecret [17] BOOLEAN OPTIONAL,
// groupID [18] INTEGER OPTIONAL,
// certChain [19] SEQUENCE OF Certificate OPTIONAL,
// ticketAgeAdd [21] OCTET STRING OPTIONAL,
// isServer [22] BOOLEAN DEFAULT TRUE,
// peerSignatureAlgorithm [23] INTEGER OPTIONAL,
// ticketMaxEarlyData [24] INTEGER OPTIONAL,
// authTimeout [25] INTEGER OPTIONAL, -- defaults to timeout
// earlyALPN [26] OCTET STRING OPTIONAL,
// isQuic [27] BOOLEAN OPTIONAL,
// quicEarlyDataHash [28] OCTET STRING OPTIONAL,
// localALPS [29] OCTET STRING OPTIONAL,
// peerALPS [30] OCTET STRING OPTIONAL,
// -- Either both or none of localALPS and peerALPS must be present. If both
// -- are present, earlyALPN must be present and non-empty.
// }
//
// Note: historically this serialization has included other optional
// fields. Their presence is currently treated as a parse error, except for
// hostName, which is ignored.
//
// keyArg [0] IMPLICIT OCTET STRING OPTIONAL,
// hostName [6] OCTET STRING OPTIONAL,
// pskIdentityHint [7] OCTET STRING OPTIONAL,
// compressionMethod [11] OCTET STRING OPTIONAL,
// srpUsername [12] OCTET STRING OPTIONAL,
// ticketFlags [20] INTEGER OPTIONAL,
static const unsigned kVersion = 1;
static const unsigned kTimeTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 1;
static const unsigned kTimeoutTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 2;
static const unsigned kPeerTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 3;
static const unsigned kSessionIDContextTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 4;
static const unsigned kVerifyResultTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 5;
static const unsigned kHostNameTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 6;
static const unsigned kPSKIdentityTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 8;
static const unsigned kTicketLifetimeHintTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 9;
static const unsigned kTicketTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 10;
static const unsigned kPeerSHA256Tag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 13;
static const unsigned kOriginalHandshakeHashTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 14;
static const unsigned kSignedCertTimestampListTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 15;
static const unsigned kOCSPResponseTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 16;
static const unsigned kExtendedMasterSecretTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 17;
static const unsigned kGroupIDTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 18;
static const unsigned kCertChainTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 19;
static const unsigned kTicketAgeAddTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 21;
static const unsigned kIsServerTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 22;
static const unsigned kPeerSignatureAlgorithmTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 23;
static const unsigned kTicketMaxEarlyDataTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 24;
static const unsigned kAuthTimeoutTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 25;
static const unsigned kEarlyALPNTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 26;
static const unsigned kIsQuicTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 27;
static const unsigned kQuicEarlyDataContextTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 28;
static const unsigned kLocalALPSTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 29;
static const unsigned kPeerALPSTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 30;
static int SSL_SESSION_to_bytes_full(const SSL_SESSION *in, CBB *cbb,
int for_ticket) {
if (in == NULL || in->cipher == NULL) {
return 0;
}
CBB session, child, child2;
if (!CBB_add_asn1(cbb, &session, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1_uint64(&session, kVersion) ||
!CBB_add_asn1_uint64(&session, in->ssl_version) ||
!CBB_add_asn1(&session, &child, CBS_ASN1_OCTETSTRING) ||
!CBB_add_u16(&child, (uint16_t)(in->cipher->id & 0xffff)) ||
// The session ID is irrelevant for a session ticket.
!CBB_add_asn1_octet_string(&session, in->session_id,
for_ticket ? 0 : in->session_id_length) ||
!CBB_add_asn1_octet_string(&session, in->secret, in->secret_length) ||
!CBB_add_asn1(&session, &child, kTimeTag) ||
!CBB_add_asn1_uint64(&child, in->time) ||
!CBB_add_asn1(&session, &child, kTimeoutTag) ||
!CBB_add_asn1_uint64(&child, in->timeout)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
// The peer certificate is only serialized if the SHA-256 isn't
// serialized instead.
if (sk_CRYPTO_BUFFER_num(in->certs.get()) > 0 && !in->peer_sha256_valid) {
const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs.get(), 0);
if (!CBB_add_asn1(&session, &child, kPeerTag) ||
!CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
CRYPTO_BUFFER_len(buffer))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
// Although it is OPTIONAL and usually empty, OpenSSL has
// historically always encoded the sid_ctx.
if (!CBB_add_asn1(&session, &child, kSessionIDContextTag) ||
!CBB_add_asn1_octet_string(&child, in->sid_ctx, in->sid_ctx_length)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
if (in->verify_result != X509_V_OK) {
if (!CBB_add_asn1(&session, &child, kVerifyResultTag) ||
!CBB_add_asn1_uint64(&child, in->verify_result)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (in->psk_identity) {
if (!CBB_add_asn1(&session, &child, kPSKIdentityTag) ||
!CBB_add_asn1_octet_string(&child,
(const uint8_t *)in->psk_identity.get(),
strlen(in->psk_identity.get()))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (in->ticket_lifetime_hint > 0) {
if (!CBB_add_asn1(&session, &child, kTicketLifetimeHintTag) ||
!CBB_add_asn1_uint64(&child, in->ticket_lifetime_hint)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (!in->ticket.empty() && !for_ticket) {
if (!CBB_add_asn1(&session, &child, kTicketTag) ||
!CBB_add_asn1_octet_string(&child, in->ticket.data(),
in->ticket.size())) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (in->peer_sha256_valid) {
if (!CBB_add_asn1(&session, &child, kPeerSHA256Tag) ||
!CBB_add_asn1_octet_string(&child, in->peer_sha256,
sizeof(in->peer_sha256))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (in->original_handshake_hash_len > 0) {
if (!CBB_add_asn1(&session, &child, kOriginalHandshakeHashTag) ||
!CBB_add_asn1_octet_string(&child, in->original_handshake_hash,
in->original_handshake_hash_len)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (in->signed_cert_timestamp_list != nullptr) {
if (!CBB_add_asn1(&session, &child, kSignedCertTimestampListTag) ||
!CBB_add_asn1_octet_string(
&child, CRYPTO_BUFFER_data(in->signed_cert_timestamp_list.get()),
CRYPTO_BUFFER_len(in->signed_cert_timestamp_list.get()))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (in->ocsp_response != nullptr) {
if (!CBB_add_asn1(&session, &child, kOCSPResponseTag) ||
!CBB_add_asn1_octet_string(
&child, CRYPTO_BUFFER_data(in->ocsp_response.get()),
CRYPTO_BUFFER_len(in->ocsp_response.get()))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (in->extended_master_secret) {
if (!CBB_add_asn1(&session, &child, kExtendedMasterSecretTag) ||
!CBB_add_asn1_bool(&child, true)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (in->group_id > 0 &&
(!CBB_add_asn1(&session, &child, kGroupIDTag) ||
!CBB_add_asn1_uint64(&child, in->group_id))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
// The certificate chain is only serialized if the leaf's SHA-256 isn't
// serialized instead.
if (in->certs != NULL &&
!in->peer_sha256_valid &&
sk_CRYPTO_BUFFER_num(in->certs.get()) >= 2) {
if (!CBB_add_asn1(&session, &child, kCertChainTag)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(in->certs.get()); i++) {
const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs.get(), i);
if (!CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
CRYPTO_BUFFER_len(buffer))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
}
if (in->ticket_age_add_valid) {
if (!CBB_add_asn1(&session, &child, kTicketAgeAddTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_u32(&child2, in->ticket_age_add)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (!in->is_server) {
if (!CBB_add_asn1(&session, &child, kIsServerTag) ||
!CBB_add_asn1_bool(&child, false)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (in->peer_signature_algorithm != 0 &&
(!CBB_add_asn1(&session, &child, kPeerSignatureAlgorithmTag) ||
!CBB_add_asn1_uint64(&child, in->peer_signature_algorithm))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
if (in->ticket_max_early_data != 0 &&
(!CBB_add_asn1(&session, &child, kTicketMaxEarlyDataTag) ||
!CBB_add_asn1_uint64(&child, in->ticket_max_early_data))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
if (in->timeout != in->auth_timeout &&
(!CBB_add_asn1(&session, &child, kAuthTimeoutTag) ||
!CBB_add_asn1_uint64(&child, in->auth_timeout))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
if (!in->early_alpn.empty()) {
if (!CBB_add_asn1(&session, &child, kEarlyALPNTag) ||
!CBB_add_asn1_octet_string(&child, in->early_alpn.data(),
in->early_alpn.size())) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (in->is_quic) {
if (!CBB_add_asn1(&session, &child, kIsQuicTag) ||
!CBB_add_asn1_bool(&child, true)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (!in->quic_early_data_context.empty()) {
if (!CBB_add_asn1(&session, &child, kQuicEarlyDataContextTag) ||
!CBB_add_asn1_octet_string(&child, in->quic_early_data_context.data(),
in->quic_early_data_context.size())) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (in->has_application_settings) {
if (!CBB_add_asn1(&session, &child, kLocalALPSTag) ||
!CBB_add_asn1_octet_string(&child,
in->local_application_settings.data(),
in->local_application_settings.size()) ||
!CBB_add_asn1(&session, &child, kPeerALPSTag) ||
!CBB_add_asn1_octet_string(&child, in->peer_application_settings.data(),
in->peer_application_settings.size())) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
}
return CBB_flush(cbb);
}
// SSL_SESSION_parse_string gets an optional ASN.1 OCTET STRING explicitly
// tagged with |tag| from |cbs| and saves it in |*out|. If the element was not
// found, it sets |*out| to NULL. It returns one on success, whether or not the
// element was found, and zero on decode error.
static int SSL_SESSION_parse_string(CBS *cbs, UniquePtr<char> *out, unsigned tag) {
CBS value;
int present;
if (!CBS_get_optional_asn1_octet_string(cbs, &value, &present, tag)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return 0;
}
if (present) {
if (CBS_contains_zero_byte(&value)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return 0;
}
char *raw = nullptr;
if (!CBS_strdup(&value, &raw)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
out->reset(raw);
} else {
out->reset();
}
return 1;
}
// SSL_SESSION_parse_octet_string gets an optional ASN.1 OCTET STRING explicitly
// tagged with |tag| from |cbs| and stows it in |*out|. It returns one on
// success, whether or not the element was found, and zero on decode error.
static bool SSL_SESSION_parse_octet_string(CBS *cbs, Array<uint8_t> *out,
unsigned tag) {
CBS value;
if (!CBS_get_optional_asn1_octet_string(cbs, &value, NULL, tag)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return false;
}
return out->CopyFrom(value);
}
static int SSL_SESSION_parse_crypto_buffer(CBS *cbs,
UniquePtr<CRYPTO_BUFFER> *out,
unsigned tag,
CRYPTO_BUFFER_POOL *pool) {
if (!CBS_peek_asn1_tag(cbs, tag)) {
return 1;
}
CBS child, value;
if (!CBS_get_asn1(cbs, &child, tag) ||
!CBS_get_asn1(&child, &value, CBS_ASN1_OCTETSTRING) ||
CBS_len(&child) != 0) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return 0;
}
out->reset(CRYPTO_BUFFER_new_from_CBS(&value, pool));
if (*out == nullptr) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return 0;
}
return 1;
}
// SSL_SESSION_parse_bounded_octet_string parses an optional ASN.1 OCTET STRING
// explicitly tagged with |tag| of size at most |max_out|.
static int SSL_SESSION_parse_bounded_octet_string(
CBS *cbs, uint8_t *out, uint8_t *out_len, uint8_t max_out, unsigned tag) {
CBS value;
if (!CBS_get_optional_asn1_octet_string(cbs, &value, NULL, tag) ||
CBS_len(&value) > max_out) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return 0;
}
OPENSSL_memcpy(out, CBS_data(&value), CBS_len(&value));
*out_len = (uint8_t)CBS_len(&value);
return 1;
}
static int SSL_SESSION_parse_long(CBS *cbs, long *out, unsigned tag,
long default_value) {
uint64_t value;
if (!CBS_get_optional_asn1_uint64(cbs, &value, tag,
(uint64_t)default_value) ||
value > LONG_MAX) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return 0;
}
*out = (long)value;
return 1;
}
static int SSL_SESSION_parse_u32(CBS *cbs, uint32_t *out, unsigned tag,
uint32_t default_value) {
uint64_t value;
if (!CBS_get_optional_asn1_uint64(cbs, &value, tag,
(uint64_t)default_value) ||
value > 0xffffffff) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return 0;
}
*out = (uint32_t)value;
return 1;
}
static int SSL_SESSION_parse_u16(CBS *cbs, uint16_t *out, unsigned tag,
uint16_t default_value) {
uint64_t value;
if (!CBS_get_optional_asn1_uint64(cbs, &value, tag,
(uint64_t)default_value) ||
value > 0xffff) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return 0;
}
*out = (uint16_t)value;
return 1;
}
UniquePtr<SSL_SESSION> SSL_SESSION_parse(CBS *cbs,
const SSL_X509_METHOD *x509_method,
CRYPTO_BUFFER_POOL *pool) {
UniquePtr<SSL_SESSION> ret = ssl_session_new(x509_method);
if (!ret) {
return nullptr;
}
CBS session;
uint64_t version, ssl_version;
uint16_t unused;
if (!CBS_get_asn1(cbs, &session, CBS_ASN1_SEQUENCE) ||
!CBS_get_asn1_uint64(&session, &version) ||
version != kVersion ||
!CBS_get_asn1_uint64(&session, &ssl_version) ||
// Require sessions have versions valid in either TLS or DTLS. The session
// will not be used by the handshake if not applicable, but, for
// simplicity, never parse a session that does not pass
// |ssl_protocol_version_from_wire|.
ssl_version > UINT16_MAX ||
!ssl_protocol_version_from_wire(&unused, ssl_version)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
ret->ssl_version = ssl_version;
CBS cipher;
uint16_t cipher_value;
if (!CBS_get_asn1(&session, &cipher, CBS_ASN1_OCTETSTRING) ||
!CBS_get_u16(&cipher, &cipher_value) ||
CBS_len(&cipher) != 0) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
ret->cipher = SSL_get_cipher_by_value(cipher_value);
if (ret->cipher == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_R_UNSUPPORTED_CIPHER);
return nullptr;
}
CBS session_id, secret;
if (!CBS_get_asn1(&session, &session_id, CBS_ASN1_OCTETSTRING) ||
CBS_len(&session_id) > SSL3_MAX_SSL_SESSION_ID_LENGTH ||
!CBS_get_asn1(&session, &secret, CBS_ASN1_OCTETSTRING) ||
CBS_len(&secret) > SSL_MAX_MASTER_KEY_LENGTH) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
OPENSSL_memcpy(ret->session_id, CBS_data(&session_id), CBS_len(&session_id));
ret->session_id_length = CBS_len(&session_id);
OPENSSL_memcpy(ret->secret, CBS_data(&secret), CBS_len(&secret));
ret->secret_length = CBS_len(&secret);
CBS child;
uint64_t timeout;
if (!CBS_get_asn1(&session, &child, kTimeTag) ||
!CBS_get_asn1_uint64(&child, &ret->time) ||
!CBS_get_asn1(&session, &child, kTimeoutTag) ||
!CBS_get_asn1_uint64(&child, &timeout) ||
timeout > UINT32_MAX) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
ret->timeout = (uint32_t)timeout;
CBS peer;
int has_peer;
if (!CBS_get_optional_asn1(&session, &peer, &has_peer, kPeerTag) ||
(has_peer && CBS_len(&peer) == 0)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
// |peer| is processed with the certificate chain.
if (!SSL_SESSION_parse_bounded_octet_string(
&session, ret->sid_ctx, &ret->sid_ctx_length, sizeof(ret->sid_ctx),
kSessionIDContextTag) ||
!SSL_SESSION_parse_long(&session, &ret->verify_result, kVerifyResultTag,
X509_V_OK)) {
return nullptr;
}
// Skip the historical hostName field.
CBS unused_hostname;
if (!CBS_get_optional_asn1(&session, &unused_hostname, nullptr,
kHostNameTag)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
if (!SSL_SESSION_parse_string(&session, &ret->psk_identity,
kPSKIdentityTag) ||
!SSL_SESSION_parse_u32(&session, &ret->ticket_lifetime_hint,
kTicketLifetimeHintTag, 0) ||
!SSL_SESSION_parse_octet_string(&session, &ret->ticket, kTicketTag)) {
return nullptr;
}
if (CBS_peek_asn1_tag(&session, kPeerSHA256Tag)) {
CBS peer_sha256;
if (!CBS_get_asn1(&session, &child, kPeerSHA256Tag) ||
!CBS_get_asn1(&child, &peer_sha256, CBS_ASN1_OCTETSTRING) ||
CBS_len(&peer_sha256) != sizeof(ret->peer_sha256) ||
CBS_len(&child) != 0) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
OPENSSL_memcpy(ret->peer_sha256, CBS_data(&peer_sha256),
sizeof(ret->peer_sha256));
ret->peer_sha256_valid = 1;
} else {
ret->peer_sha256_valid = 0;
}
if (!SSL_SESSION_parse_bounded_octet_string(
&session, ret->original_handshake_hash,
&ret->original_handshake_hash_len,
sizeof(ret->original_handshake_hash), kOriginalHandshakeHashTag) ||
!SSL_SESSION_parse_crypto_buffer(&session,
&ret->signed_cert_timestamp_list,
kSignedCertTimestampListTag, pool) ||
!SSL_SESSION_parse_crypto_buffer(&session, &ret->ocsp_response,
kOCSPResponseTag, pool)) {
return nullptr;
}
int extended_master_secret;
if (!CBS_get_optional_asn1_bool(&session, &extended_master_secret,
kExtendedMasterSecretTag,
0 /* default to false */)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
ret->extended_master_secret = !!extended_master_secret;
if (!SSL_SESSION_parse_u16(&session, &ret->group_id, kGroupIDTag, 0)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
CBS cert_chain;
CBS_init(&cert_chain, NULL, 0);
int has_cert_chain;
if (!CBS_get_optional_asn1(&session, &cert_chain, &has_cert_chain,
kCertChainTag) ||
(has_cert_chain && CBS_len(&cert_chain) == 0)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
if (has_cert_chain && !has_peer) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
if (has_peer || has_cert_chain) {
ret->certs.reset(sk_CRYPTO_BUFFER_new_null());
if (ret->certs == nullptr) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return nullptr;
}
if (has_peer) {
UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new_from_CBS(&peer, pool));
if (!buffer ||
!PushToStack(ret->certs.get(), std::move(buffer))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return nullptr;
}
}
while (CBS_len(&cert_chain) > 0) {
CBS cert;
if (!CBS_get_any_asn1_element(&cert_chain, &cert, NULL, NULL) ||
CBS_len(&cert) == 0) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new_from_CBS(&cert, pool));
if (buffer == nullptr ||
!PushToStack(ret->certs.get(), std::move(buffer))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
return nullptr;
}
}
}
CBS age_add;
int age_add_present;
if (!CBS_get_optional_asn1_octet_string(&session, &age_add, &age_add_present,
kTicketAgeAddTag) ||
(age_add_present &&
!CBS_get_u32(&age_add, &ret->ticket_age_add)) ||
CBS_len(&age_add) != 0) {
return nullptr;
}
ret->ticket_age_add_valid = age_add_present != 0;
int is_server;
if (!CBS_get_optional_asn1_bool(&session, &is_server, kIsServerTag,
1 /* default to true */)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
/* TODO: in time we can include |is_server| for servers too, then we can
enforce that client and server sessions are never mixed up. */
ret->is_server = is_server;
int is_quic;
if (!SSL_SESSION_parse_u16(&session, &ret->peer_signature_algorithm,
kPeerSignatureAlgorithmTag, 0) ||
!SSL_SESSION_parse_u32(&session, &ret->ticket_max_early_data,
kTicketMaxEarlyDataTag, 0) ||
!SSL_SESSION_parse_u32(&session, &ret->auth_timeout, kAuthTimeoutTag,
ret->timeout) ||
!SSL_SESSION_parse_octet_string(&session, &ret->early_alpn,
kEarlyALPNTag) ||
!CBS_get_optional_asn1_bool(&session, &is_quic, kIsQuicTag,
/*default_value=*/false) ||
!SSL_SESSION_parse_octet_string(&session, &ret->quic_early_data_context,
kQuicEarlyDataContextTag)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
CBS settings;
int has_local_alps, has_peer_alps;
if (!CBS_get_optional_asn1_octet_string(&session, &settings, &has_local_alps,
kLocalALPSTag) ||
!ret->local_application_settings.CopyFrom(settings) ||
!CBS_get_optional_asn1_octet_string(&session, &settings, &has_peer_alps,
kPeerALPSTag) ||
!ret->peer_application_settings.CopyFrom(settings) ||
CBS_len(&session) != 0) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
ret->is_quic = is_quic;
// The two ALPS values and ALPN must be consistent.
if (has_local_alps != has_peer_alps ||
(has_local_alps && ret->early_alpn.empty())) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
ret->has_application_settings = has_local_alps;
if (!x509_method->session_cache_objects(ret.get())) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return nullptr;
}
return ret;
}
int ssl_session_serialize(const SSL_SESSION *in, CBB *cbb) {
return SSL_SESSION_to_bytes_full(in, cbb, 0);
}
BSSL_NAMESPACE_END
using namespace bssl;
int SSL_SESSION_to_bytes(const SSL_SESSION *in, uint8_t **out_data,
size_t *out_len) {
if (in->not_resumable) {
// If the caller has an unresumable session, e.g. if |SSL_get_session| were
// called on a TLS 1.3 or False Started connection, serialize with a
// placeholder value so it is not accidentally deserialized into a resumable
// one.
static const char kNotResumableSession[] = "NOT RESUMABLE";
*out_len = strlen(kNotResumableSession);
*out_data = (uint8_t *)OPENSSL_memdup(kNotResumableSession, *out_len);
if (*out_data == NULL) {
return 0;
}
return 1;
}
ScopedCBB cbb;
if (!CBB_init(cbb.get(), 256) ||
!SSL_SESSION_to_bytes_full(in, cbb.get(), 0) ||
!CBB_finish(cbb.get(), out_data, out_len)) {
return 0;
}
return 1;
}
int SSL_SESSION_to_bytes_for_ticket(const SSL_SESSION *in, uint8_t **out_data,
size_t *out_len) {
ScopedCBB cbb;
if (!CBB_init(cbb.get(), 256) ||
!SSL_SESSION_to_bytes_full(in, cbb.get(), 1) ||
!CBB_finish(cbb.get(), out_data, out_len)) {
return 0;
}
return 1;
}
int i2d_SSL_SESSION(SSL_SESSION *in, uint8_t **pp) {
uint8_t *out;
size_t len;
if (!SSL_SESSION_to_bytes(in, &out, &len)) {
return -1;
}
if (len > INT_MAX) {
OPENSSL_free(out);
OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
return -1;
}
if (pp) {
OPENSSL_memcpy(*pp, out, len);
*pp += len;
}
OPENSSL_free(out);
return len;
}
SSL_SESSION *SSL_SESSION_from_bytes(const uint8_t *in, size_t in_len,
const SSL_CTX *ctx) {
CBS cbs;
CBS_init(&cbs, in, in_len);
UniquePtr<SSL_SESSION> ret =
SSL_SESSION_parse(&cbs, ctx->x509_method, ctx->pool);
if (!ret) {
return NULL;
}
if (CBS_len(&cbs) != 0) {
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
return NULL;
}
return ret.release();
}
|