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828 lines
30 KiB
C++
828 lines
30 KiB
C++
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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/* ====================================================================
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* Copyright 2005 Nokia. All rights reserved.
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*
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* The portions of the attached software ("Contribution") is developed by
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* Nokia Corporation and is licensed pursuant to the OpenSSL open source
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* license.
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*
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* The Contribution, originally written by Mika Kousa and Pasi Eronen of
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* Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
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* support (see RFC 4279) to OpenSSL.
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*
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* No patent licenses or other rights except those expressly stated in
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* the OpenSSL open source license shall be deemed granted or received
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* expressly, by implication, estoppel, or otherwise.
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*
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* No assurances are provided by Nokia that the Contribution does not
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* infringe the patent or other intellectual property rights of any third
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* party or that the license provides you with all the necessary rights
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* to make use of the Contribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
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* ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
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* SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
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* OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
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* OTHERWISE. */
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#include <openssl/ssl.h>
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#include <limits.h>
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#include <string.h>
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#include <utility>
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#include <openssl/buf.h>
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#include <openssl/bytestring.h>
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include <openssl/x509.h>
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#include "../crypto/internal.h"
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#include "internal.h"
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BSSL_NAMESPACE_BEGIN
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// An SSL_SESSION is serialized as the following ASN.1 structure:
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//
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// SSLSession ::= SEQUENCE {
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// version INTEGER (1), -- session structure version
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// sslVersion INTEGER, -- protocol version number
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// cipher OCTET STRING, -- two bytes long
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// sessionID OCTET STRING,
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// masterKey OCTET STRING,
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// time [1] INTEGER, -- seconds since UNIX epoch
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// timeout [2] INTEGER, -- in seconds
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// peer [3] Certificate OPTIONAL,
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// sessionIDContext [4] OCTET STRING OPTIONAL,
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// verifyResult [5] INTEGER OPTIONAL, -- one of X509_V_* codes
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// pskIdentity [8] OCTET STRING OPTIONAL,
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// ticketLifetimeHint [9] INTEGER OPTIONAL, -- client-only
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// ticket [10] OCTET STRING OPTIONAL, -- client-only
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// peerSHA256 [13] OCTET STRING OPTIONAL,
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// originalHandshakeHash [14] OCTET STRING OPTIONAL,
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// signedCertTimestampList [15] OCTET STRING OPTIONAL,
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// -- contents of SCT extension
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// ocspResponse [16] OCTET STRING OPTIONAL,
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// -- stapled OCSP response from the server
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// extendedMasterSecret [17] BOOLEAN OPTIONAL,
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// groupID [18] INTEGER OPTIONAL,
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// certChain [19] SEQUENCE OF Certificate OPTIONAL,
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// ticketAgeAdd [21] OCTET STRING OPTIONAL,
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// isServer [22] BOOLEAN DEFAULT TRUE,
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// peerSignatureAlgorithm [23] INTEGER OPTIONAL,
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// ticketMaxEarlyData [24] INTEGER OPTIONAL,
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// authTimeout [25] INTEGER OPTIONAL, -- defaults to timeout
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// earlyALPN [26] OCTET STRING OPTIONAL,
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// }
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//
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// Note: historically this serialization has included other optional
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// fields. Their presence is currently treated as a parse error, except for
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// hostName, which is ignored.
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//
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// keyArg [0] IMPLICIT OCTET STRING OPTIONAL,
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// hostName [6] OCTET STRING OPTIONAL,
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// pskIdentityHint [7] OCTET STRING OPTIONAL,
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// compressionMethod [11] OCTET STRING OPTIONAL,
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// srpUsername [12] OCTET STRING OPTIONAL,
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// ticketFlags [20] INTEGER OPTIONAL,
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static const unsigned kVersion = 1;
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static const unsigned kTimeTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 1;
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static const unsigned kTimeoutTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 2;
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static const unsigned kPeerTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 3;
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static const unsigned kSessionIDContextTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 4;
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static const unsigned kVerifyResultTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 5;
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static const unsigned kHostNameTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 6;
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static const unsigned kPSKIdentityTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 8;
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static const unsigned kTicketLifetimeHintTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 9;
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static const unsigned kTicketTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 10;
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static const unsigned kPeerSHA256Tag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 13;
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static const unsigned kOriginalHandshakeHashTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 14;
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static const unsigned kSignedCertTimestampListTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 15;
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static const unsigned kOCSPResponseTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 16;
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static const unsigned kExtendedMasterSecretTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 17;
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static const unsigned kGroupIDTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 18;
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static const unsigned kCertChainTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 19;
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static const unsigned kTicketAgeAddTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 21;
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static const unsigned kIsServerTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 22;
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static const unsigned kPeerSignatureAlgorithmTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 23;
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static const unsigned kTicketMaxEarlyDataTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 24;
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static const unsigned kAuthTimeoutTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 25;
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static const unsigned kEarlyALPNTag =
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CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 26;
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static int SSL_SESSION_to_bytes_full(const SSL_SESSION *in, CBB *cbb,
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int for_ticket) {
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if (in == NULL || in->cipher == NULL) {
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return 0;
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}
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CBB session, child, child2;
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if (!CBB_add_asn1(cbb, &session, CBS_ASN1_SEQUENCE) ||
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!CBB_add_asn1_uint64(&session, kVersion) ||
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!CBB_add_asn1_uint64(&session, in->ssl_version) ||
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!CBB_add_asn1(&session, &child, CBS_ASN1_OCTETSTRING) ||
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!CBB_add_u16(&child, (uint16_t)(in->cipher->id & 0xffff)) ||
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// The session ID is irrelevant for a session ticket.
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!CBB_add_asn1_octet_string(&session, in->session_id,
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for_ticket ? 0 : in->session_id_length) ||
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!CBB_add_asn1_octet_string(&session, in->master_key,
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in->master_key_length) ||
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!CBB_add_asn1(&session, &child, kTimeTag) ||
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!CBB_add_asn1_uint64(&child, in->time) ||
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!CBB_add_asn1(&session, &child, kTimeoutTag) ||
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!CBB_add_asn1_uint64(&child, in->timeout)) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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// The peer certificate is only serialized if the SHA-256 isn't
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// serialized instead.
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if (sk_CRYPTO_BUFFER_num(in->certs.get()) > 0 && !in->peer_sha256_valid) {
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const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs.get(), 0);
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if (!CBB_add_asn1(&session, &child, kPeerTag) ||
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!CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
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CRYPTO_BUFFER_len(buffer))) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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// Although it is OPTIONAL and usually empty, OpenSSL has
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// historically always encoded the sid_ctx.
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if (!CBB_add_asn1(&session, &child, kSessionIDContextTag) ||
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!CBB_add_asn1_octet_string(&child, in->sid_ctx, in->sid_ctx_length)) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if (in->verify_result != X509_V_OK) {
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if (!CBB_add_asn1(&session, &child, kVerifyResultTag) ||
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!CBB_add_asn1_uint64(&child, in->verify_result)) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (in->psk_identity) {
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if (!CBB_add_asn1(&session, &child, kPSKIdentityTag) ||
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!CBB_add_asn1_octet_string(&child,
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(const uint8_t *)in->psk_identity.get(),
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strlen(in->psk_identity.get()))) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (in->ticket_lifetime_hint > 0) {
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if (!CBB_add_asn1(&session, &child, kTicketLifetimeHintTag) ||
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!CBB_add_asn1_uint64(&child, in->ticket_lifetime_hint)) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (!in->ticket.empty() && !for_ticket) {
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if (!CBB_add_asn1(&session, &child, kTicketTag) ||
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!CBB_add_asn1_octet_string(&child, in->ticket.data(),
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in->ticket.size())) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (in->peer_sha256_valid) {
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if (!CBB_add_asn1(&session, &child, kPeerSHA256Tag) ||
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!CBB_add_asn1_octet_string(&child, in->peer_sha256,
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sizeof(in->peer_sha256))) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (in->original_handshake_hash_len > 0) {
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if (!CBB_add_asn1(&session, &child, kOriginalHandshakeHashTag) ||
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!CBB_add_asn1_octet_string(&child, in->original_handshake_hash,
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in->original_handshake_hash_len)) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (in->signed_cert_timestamp_list != nullptr) {
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if (!CBB_add_asn1(&session, &child, kSignedCertTimestampListTag) ||
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!CBB_add_asn1_octet_string(
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&child, CRYPTO_BUFFER_data(in->signed_cert_timestamp_list.get()),
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CRYPTO_BUFFER_len(in->signed_cert_timestamp_list.get()))) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (in->ocsp_response != nullptr) {
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if (!CBB_add_asn1(&session, &child, kOCSPResponseTag) ||
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!CBB_add_asn1_octet_string(
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&child, CRYPTO_BUFFER_data(in->ocsp_response.get()),
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CRYPTO_BUFFER_len(in->ocsp_response.get()))) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (in->extended_master_secret) {
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if (!CBB_add_asn1(&session, &child, kExtendedMasterSecretTag) ||
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!CBB_add_asn1_bool(&child, true)) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (in->group_id > 0 &&
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(!CBB_add_asn1(&session, &child, kGroupIDTag) ||
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!CBB_add_asn1_uint64(&child, in->group_id))) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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// The certificate chain is only serialized if the leaf's SHA-256 isn't
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// serialized instead.
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if (in->certs != NULL &&
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!in->peer_sha256_valid &&
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sk_CRYPTO_BUFFER_num(in->certs.get()) >= 2) {
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if (!CBB_add_asn1(&session, &child, kCertChainTag)) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(in->certs.get()); i++) {
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const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs.get(), i);
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if (!CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
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CRYPTO_BUFFER_len(buffer))) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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}
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if (in->ticket_age_add_valid) {
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if (!CBB_add_asn1(&session, &child, kTicketAgeAddTag) ||
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!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
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!CBB_add_u32(&child2, in->ticket_age_add)) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (!in->is_server) {
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if (!CBB_add_asn1(&session, &child, kIsServerTag) ||
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!CBB_add_asn1_bool(&child, false)) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (in->peer_signature_algorithm != 0 &&
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(!CBB_add_asn1(&session, &child, kPeerSignatureAlgorithmTag) ||
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!CBB_add_asn1_uint64(&child, in->peer_signature_algorithm))) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if (in->ticket_max_early_data != 0 &&
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(!CBB_add_asn1(&session, &child, kTicketMaxEarlyDataTag) ||
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!CBB_add_asn1_uint64(&child, in->ticket_max_early_data))) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if (in->timeout != in->auth_timeout &&
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(!CBB_add_asn1(&session, &child, kAuthTimeoutTag) ||
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!CBB_add_asn1_uint64(&child, in->auth_timeout))) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if (!in->early_alpn.empty()) {
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if (!CBB_add_asn1(&session, &child, kEarlyALPNTag) ||
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!CBB_add_asn1_octet_string(&child, in->early_alpn.data(),
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in->early_alpn.size())) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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return CBB_flush(cbb);
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}
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// SSL_SESSION_parse_string gets an optional ASN.1 OCTET STRING explicitly
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// tagged with |tag| from |cbs| and saves it in |*out|. If the element was not
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// found, it sets |*out| to NULL. It returns one on success, whether or not the
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// element was found, and zero on decode error.
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static int SSL_SESSION_parse_string(CBS *cbs, UniquePtr<char> *out, unsigned tag) {
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CBS value;
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int present;
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if (!CBS_get_optional_asn1_octet_string(cbs, &value, &present, tag)) {
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OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
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return 0;
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}
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if (present) {
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if (CBS_contains_zero_byte(&value)) {
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OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
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return 0;
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}
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char *raw = nullptr;
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if (!CBS_strdup(&value, &raw)) {
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OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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|
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, master_key;
|
|
if (!CBS_get_asn1(&session, &session_id, CBS_ASN1_OCTETSTRING) ||
|
|
CBS_len(&session_id) > SSL3_MAX_SSL_SESSION_ID_LENGTH ||
|
|
!CBS_get_asn1(&session, &master_key, CBS_ASN1_OCTETSTRING) ||
|
|
CBS_len(&master_key) > 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->master_key, CBS_data(&master_key), CBS_len(&master_key));
|
|
ret->master_key_length = CBS_len(&master_key);
|
|
|
|
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;
|
|
|
|
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_len(&session) != 0) {
|
|
OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
|
|
return nullptr;
|
|
}
|
|
|
|
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 *)BUF_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();
|
|
}
|