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83fd6b686f
boringssl/ssl/ssl_asn1.c
David Benjamin 83fd6b686f Reimplement d2i_SSL_SESSION with CBS. 
Do away with all those unreadable macros. Also fix many many memory leaks in
the SSL_SESSION reuse case. Add a number of helper functions in CBS to help
with parsing optional fields.

Change-Id: I2ce8fd0d5b060a1b56e7f99f7780997fabc5ce41
Reviewed-on: https://boringssl-review.googlesource.com/1998
Reviewed-by: Adam Langley <agl@google.com>
2014-10-24 18:26:41 +00:00

634 lines
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/* 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 <assert.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <openssl/asn1.h>
#include <openssl/asn1_mac.h>
#include <openssl/bytestring.h>
#include <openssl/err.h>
#include <openssl/x509.h>
#include "ssl_locl.h"
/* An SSL_SESSION is serialized as the following ASN.1 structure:
*
* SSLSession ::= SEQUENCE {
* version INTEGER (1), -- ignored
* sslVersion INTEGER, -- protocol version number
* cipher OCTET STRING, -- two bytes long
* sessionID OCTET STRING,
* masterKey OCTET STRING,
* keyArg [0] IMPLICIT OCTET STRING OPTIONAL,
* -- ignored: legacy SSLv2-only field.
* time [1] INTEGER OPTIONAL, -- seconds since UNIX epoch
* timeout [2] INTEGER OPTIONAL, -- in seconds
* peer [3] Certificate OPTIONAL,
* sessionIDContext [4] OCTET STRING OPTIONAL,
* verifyResult [5] INTEGER OPTIONAL, -- one of X509_V_* codes
* hostName [6] OCTET STRING OPTIONAL,
* -- from server_name extension
* pskIdentityHint [7] OCTET STRING OPTIONAL,
* 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
* }
*
* Note: When the relevant features were #ifdef'd out, support for
* parsing compressionMethod [11] and srpUsername [12] was lost. */
static const int kKeyArgTag = CBS_ASN1_CONTEXT_SPECIFIC | 0;
static const int kTimeTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 1;
static const int kTimeoutTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 2;
static const int kPeerTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 3;
static const int kSessionIDContextTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 4;
static const int kVerifyResultTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 5;
static const int kHostNameTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 6;
static const int kPSKIdentityHintTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 7;
static const int kPSKIdentityTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 8;
static const int kTicketLifetimeHintTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 9;
static const int kTicketTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 10;
static const int kPeerSHA256Tag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 13;
static const int kOriginalHandshakeHashTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 14;
static const int kSignedCertTimestampListTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 15;
static const int kOCSPResponseTag =
CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 16;
typedef struct ssl_session_asn1_st
{
ASN1_INTEGER version;
ASN1_INTEGER ssl_version;
ASN1_OCTET_STRING cipher;
ASN1_OCTET_STRING comp_id;
ASN1_OCTET_STRING master_key;
ASN1_OCTET_STRING session_id;
ASN1_OCTET_STRING session_id_context;
ASN1_INTEGER time;
ASN1_INTEGER timeout;
ASN1_INTEGER verify_result;
ASN1_OCTET_STRING tlsext_hostname;
ASN1_INTEGER tlsext_tick_lifetime;
ASN1_OCTET_STRING tlsext_tick;
ASN1_OCTET_STRING psk_identity_hint;
ASN1_OCTET_STRING psk_identity;
ASN1_OCTET_STRING peer_sha256;
ASN1_OCTET_STRING original_handshake_hash;
ASN1_OCTET_STRING tlsext_signed_cert_timestamp_list;
ASN1_OCTET_STRING ocsp_response;
} SSL_SESSION_ASN1;
int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
{
#define LSIZE2 (sizeof(long)*2)
int v1=0,v2=0,v3=0,v4=0,v5=0,v7=0,v8=0,v13=0,v14=0,v15=0,v16=0;
unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
int v6=0,v9=0,v10=0;
unsigned char ibuf6[LSIZE2];
long l;
SSL_SESSION_ASN1 a;
M_ASN1_I2D_vars(in);
if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
return(0);
/* Note that I cheat in the following 2 assignments. I know
* that if the ASN1_INTEGER passed to ASN1_INTEGER_set
* is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
* This is a bit evil but makes things simple, no dynamic allocation
* to clean up :-) */
a.version.length=LSIZE2;
a.version.type=V_ASN1_INTEGER;
a.version.data=ibuf1;
ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
a.ssl_version.length=LSIZE2;
a.ssl_version.type=V_ASN1_INTEGER;
a.ssl_version.data=ibuf2;
ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
a.cipher.type=V_ASN1_OCTET_STRING;
a.cipher.data=buf;
if (in->cipher == NULL)
l=in->cipher_id;
else
l=in->cipher->id;
if (in->ssl_version == SSL2_VERSION)
{
a.cipher.length=3;
buf[0]=((unsigned char)(l>>16L))&0xff;
buf[1]=((unsigned char)(l>> 8L))&0xff;
buf[2]=((unsigned char)(l ))&0xff;
}
else
{
a.cipher.length=2;
buf[0]=((unsigned char)(l>>8L))&0xff;
buf[1]=((unsigned char)(l ))&0xff;
}
a.master_key.length=in->master_key_length;
a.master_key.type=V_ASN1_OCTET_STRING;
a.master_key.data=in->master_key;
a.session_id.length=in->session_id_length;
a.session_id.type=V_ASN1_OCTET_STRING;
a.session_id.data=in->session_id;
a.session_id_context.length=in->sid_ctx_length;
a.session_id_context.type=V_ASN1_OCTET_STRING;
a.session_id_context.data=in->sid_ctx;
if (in->time != 0L)
{
a.time.length=LSIZE2;
a.time.type=V_ASN1_INTEGER;
a.time.data=ibuf3;
ASN1_INTEGER_set(&(a.time),in->time);
}
if (in->timeout != 0L)
{
a.timeout.length=LSIZE2;
a.timeout.type=V_ASN1_INTEGER;
a.timeout.data=ibuf4;
ASN1_INTEGER_set(&(a.timeout),in->timeout);
}
if (in->verify_result != X509_V_OK)
{
a.verify_result.length=LSIZE2;
a.verify_result.type=V_ASN1_INTEGER;
a.verify_result.data=ibuf5;
ASN1_INTEGER_set(&a.verify_result,in->verify_result);
}
if (in->tlsext_hostname)
{
a.tlsext_hostname.length=strlen(in->tlsext_hostname);
a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
}
if (in->tlsext_tick)
{
a.tlsext_tick.length= in->tlsext_ticklen;
a.tlsext_tick.type=V_ASN1_OCTET_STRING;
a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
}
if (in->tlsext_tick_lifetime_hint > 0)
{
a.tlsext_tick_lifetime.length=LSIZE2;
a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
a.tlsext_tick_lifetime.data=ibuf6;
ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
}
if (in->psk_identity_hint)
{
a.psk_identity_hint.length=strlen(in->psk_identity_hint);
a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
}
if (in->psk_identity)
{
a.psk_identity.length=strlen(in->psk_identity);
a.psk_identity.type=V_ASN1_OCTET_STRING;
a.psk_identity.data=(unsigned char *)(in->psk_identity);
}
if (in->peer_sha256_valid)
{
a.peer_sha256.length = sizeof(in->peer_sha256);
a.peer_sha256.type = V_ASN1_OCTET_STRING;
a.peer_sha256.data = in->peer_sha256;
}
if (in->original_handshake_hash_len > 0)
{
a.original_handshake_hash.length = in->original_handshake_hash_len;
a.original_handshake_hash.type = V_ASN1_OCTET_STRING;
a.original_handshake_hash.data = in->original_handshake_hash;
}
if (in->tlsext_signed_cert_timestamp_list_length > 0)
{
a.tlsext_signed_cert_timestamp_list.length =
in->tlsext_signed_cert_timestamp_list_length;
a.tlsext_signed_cert_timestamp_list.type = V_ASN1_OCTET_STRING;
a.tlsext_signed_cert_timestamp_list.data =
in->tlsext_signed_cert_timestamp_list;
}
if (in->ocsp_response_length > 0)
{
a.ocsp_response.length = in->ocsp_response_length;
a.ocsp_response.type = V_ASN1_OCTET_STRING;
a.ocsp_response.data = in->ocsp_response;
}
M_ASN1_I2D_len(&(a.version), i2d_ASN1_INTEGER);
M_ASN1_I2D_len(&(a.ssl_version), i2d_ASN1_INTEGER);
M_ASN1_I2D_len(&(a.cipher), i2d_ASN1_OCTET_STRING);
M_ASN1_I2D_len(&(a.session_id), i2d_ASN1_OCTET_STRING);
M_ASN1_I2D_len(&(a.master_key), i2d_ASN1_OCTET_STRING);
if (in->time != 0L)
M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
if (in->timeout != 0L)
M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
if (in->peer != NULL && in->peer_sha256_valid == 0)
M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
if (in->verify_result != X509_V_OK)
M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
if (in->tlsext_tick_lifetime_hint > 0)
M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
if (in->tlsext_tick)
M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
if (in->tlsext_hostname)
M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
if (in->psk_identity_hint)
M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
if (in->psk_identity)
M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
if (in->peer_sha256_valid)
M_ASN1_I2D_len_EXP_opt(&(a.peer_sha256),i2d_ASN1_OCTET_STRING,13,v13);
if (in->original_handshake_hash_len > 0)
M_ASN1_I2D_len_EXP_opt(&(a.original_handshake_hash),i2d_ASN1_OCTET_STRING,14,v14);
if (in->tlsext_signed_cert_timestamp_list_length > 0)
M_ASN1_I2D_len_EXP_opt(&(a.tlsext_signed_cert_timestamp_list),
i2d_ASN1_OCTET_STRING, 15, v15);
if (in->ocsp_response_length > 0)
M_ASN1_I2D_len_EXP_opt(&(a.ocsp_response), i2d_ASN1_OCTET_STRING, 16, v16);
M_ASN1_I2D_seq_total();
M_ASN1_I2D_put(&(a.version), i2d_ASN1_INTEGER);
M_ASN1_I2D_put(&(a.ssl_version), i2d_ASN1_INTEGER);
M_ASN1_I2D_put(&(a.cipher), i2d_ASN1_OCTET_STRING);
M_ASN1_I2D_put(&(a.session_id), i2d_ASN1_OCTET_STRING);
M_ASN1_I2D_put(&(a.master_key), i2d_ASN1_OCTET_STRING);
if (in->time != 0L)
M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
if (in->timeout != 0L)
M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
if (in->peer != NULL && in->peer_sha256_valid == 0)
M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
v4);
if (in->verify_result != X509_V_OK)
M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
if (in->tlsext_hostname)
M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
if (in->psk_identity_hint)
M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
if (in->psk_identity)
M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
if (in->tlsext_tick_lifetime_hint > 0)
M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
if (in->tlsext_tick)
M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
if (in->peer_sha256_valid)
M_ASN1_I2D_put_EXP_opt(&(a.peer_sha256),i2d_ASN1_OCTET_STRING,13,v13);
if (in->original_handshake_hash_len > 0)
M_ASN1_I2D_put_EXP_opt(&(a.original_handshake_hash),i2d_ASN1_OCTET_STRING,14,v14);
if (in->tlsext_signed_cert_timestamp_list_length > 0)
M_ASN1_I2D_put_EXP_opt(&(a.tlsext_signed_cert_timestamp_list),
i2d_ASN1_OCTET_STRING, 15, v15);
if (in->ocsp_response > 0)
M_ASN1_I2D_put_EXP_opt(&(a.ocsp_response), i2d_ASN1_OCTET_STRING, 16, v16);
M_ASN1_I2D_finish();
}
/* d2i_SSL_SESSION_get_string gets an optional ASN.1 OCTET STRING
* explicitly tagged with |tag| from |cbs| and saves it in |*out|. On
* entry, if |*out| is not NULL, it frees the existing contents. 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 d2i_SSL_SESSION_get_string(CBS *cbs, char **out, unsigned tag) {
CBS value;
int present;
if (!CBS_get_optional_asn1_octet_string(cbs, &value, &present, tag)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
return 0;
}
if (present) {
if (CBS_contains_zero_byte(&value)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
return 0;
}
if (!CBS_strdup(&value, out)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, ERR_R_MALLOC_FAILURE);
return 0;
}
} else if (*out) {
OPENSSL_free(*out);
*out = NULL;
}
return 1;
}
/* d2i_SSL_SESSION_get_string gets an optional ASN.1 OCTET STRING
* explicitly tagged with |tag| from |cbs| and stows it in |*out_ptr|
* and |*out_len|. If |*out_ptr| is not NULL, it frees the existing
* contents. On entry, if the element was not found, it sets
* |*out_ptr| to NULL. It returns one on success, whether or not the
* element was found, and zero on decode error. */
static int d2i_SSL_SESSION_get_octet_string(CBS *cbs, uint8_t **out_ptr,
size_t *out_len, unsigned tag) {
CBS value;
if (!CBS_get_optional_asn1_octet_string(cbs, &value, NULL, tag)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
return 0;
}
if (!CBS_stow(&value, out_ptr, out_len)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, ERR_R_MALLOC_FAILURE);
return 0;
}
return 1;
}
SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const uint8_t **pp, long length) {
SSL_SESSION *ret = NULL;
CBS cbs, session, cipher, session_id, master_key;
CBS key_arg, peer, sid_ctx, peer_sha256, original_handshake_hash;
int has_key_arg, has_peer, has_peer_sha256;
uint64_t version, ssl_version;
uint64_t session_time, timeout, verify_result, ticket_lifetime_hint;
if (a && *a) {
ret = *a;
} else {
ret = SSL_SESSION_new();
if (ret == NULL) {
goto err;
}
}
CBS_init(&cbs, *pp, length);
if (!CBS_get_asn1(&cbs, &session, CBS_ASN1_SEQUENCE) ||
!CBS_get_asn1_uint64(&session, &version) ||
!CBS_get_asn1_uint64(&session, &ssl_version) ||
!CBS_get_asn1(&session, &cipher, CBS_ASN1_OCTETSTRING) ||
!CBS_get_asn1(&session, &session_id, CBS_ASN1_OCTETSTRING) ||
!CBS_get_asn1(&session, &master_key, CBS_ASN1_OCTETSTRING) ||
!CBS_get_optional_asn1(&session, &key_arg, &has_key_arg, kKeyArgTag) ||
!CBS_get_optional_asn1_uint64(&session, &session_time, kTimeTag,
time(NULL)) ||
!CBS_get_optional_asn1_uint64(&session, &timeout, kTimeoutTag, 3) ||
!CBS_get_optional_asn1(&session, &peer, &has_peer, kPeerTag) ||
!CBS_get_optional_asn1_octet_string(&session, &sid_ctx, NULL,
kSessionIDContextTag) ||
!CBS_get_optional_asn1_uint64(&session, &verify_result, kVerifyResultTag,
X509_V_OK)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
goto err;
}
if (!d2i_SSL_SESSION_get_string(&session, &ret->tlsext_hostname,
kHostNameTag) ||
!d2i_SSL_SESSION_get_string(&session, &ret->psk_identity_hint,
kPSKIdentityHintTag) ||
!d2i_SSL_SESSION_get_string(&session, &ret->psk_identity,
kPSKIdentityTag)) {
goto err;
}
if (!CBS_get_optional_asn1_uint64(&session, &ticket_lifetime_hint,
kTicketLifetimeHintTag, 0)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
goto err;
}
if (!d2i_SSL_SESSION_get_octet_string(&session, &ret->tlsext_tick,
&ret->tlsext_ticklen, kTicketTag)) {
goto err;
}
if (!CBS_get_optional_asn1_octet_string(&session, &peer_sha256,
&has_peer_sha256, kPeerSHA256Tag) ||
!CBS_get_optional_asn1_octet_string(&session, &original_handshake_hash,
NULL, kOriginalHandshakeHashTag)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
goto err;
}
if (!d2i_SSL_SESSION_get_octet_string(
&session, &ret->tlsext_signed_cert_timestamp_list,
&ret->tlsext_signed_cert_timestamp_list_length,
kSignedCertTimestampListTag) ||
!d2i_SSL_SESSION_get_octet_string(
&session, &ret->ocsp_response, &ret->ocsp_response_length,
kOCSPResponseTag)) {
goto err;
}
/* Ignore |version|. The structure version number is ignored. */
/* Only support SSLv3/TLS and DTLS. */
if ((ssl_version >> 8) != SSL3_VERSION_MAJOR &&
(ssl_version >> 8) != (DTLS1_VERSION >> 8)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_UNKNOWN_SSL_VERSION);
goto err;
}
ret->ssl_version = ssl_version;
if (CBS_len(&cipher) != 2) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_CIPHER_CODE_WRONG_LENGTH);
goto err;
}
ret->cipher_id =
0x03000000L | (CBS_data(&cipher)[0] << 8L) | CBS_data(&cipher)[1];
ret->cipher = ssl3_get_cipher_by_value(ret->cipher_id & 0xffff);
if (ret->cipher == NULL) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_UNSUPPORTED_CIPHER);
goto err;
}
if (CBS_len(&session_id) > SSL3_MAX_SSL_SESSION_ID_LENGTH) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
goto err;
}
memcpy(ret->session_id, CBS_data(&session_id), CBS_len(&session_id));
ret->session_id_length = CBS_len(&session_id);
if (CBS_len(&master_key) > SSL_MAX_MASTER_KEY_LENGTH) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
goto err;
}
memcpy(ret->master_key, CBS_data(&master_key), CBS_len(&master_key));
ret->master_key_length = CBS_len(&master_key);
if (session_time > LONG_MAX ||
timeout > LONG_MAX) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
goto err;
}
ret->time = session_time;
ret->timeout = timeout;
if (ret->peer != NULL) {
X509_free(ret->peer);
ret->peer = NULL;
}
if (has_peer) {
const uint8_t *ptr;
ptr = CBS_data(&peer);
ret->peer = d2i_X509(NULL, &ptr, CBS_len(&peer));
if (ret->peer == NULL) {
goto err;
}
if (ptr != CBS_data(&peer) + CBS_len(&peer)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
goto err;
}
}
if (CBS_len(&sid_ctx) > sizeof(ret->sid_ctx)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
goto err;
}
memcpy(ret->sid_ctx, CBS_data(&sid_ctx), CBS_len(&sid_ctx));
ret->sid_ctx_length = CBS_len(&sid_ctx);
if (verify_result > LONG_MAX ||
ticket_lifetime_hint > 0xffffffff) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
goto err;
}
ret->verify_result = verify_result;
ret->tlsext_tick_lifetime_hint = ticket_lifetime_hint;
if (has_peer_sha256) {
if (CBS_len(&peer_sha256) != sizeof(ret->peer_sha256)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
goto err;
}
memcpy(ret->peer_sha256, CBS_data(&peer_sha256), sizeof(ret->peer_sha256));
ret->peer_sha256_valid = 1;
} else {
ret->peer_sha256_valid = 0;
}
if (CBS_len(&original_handshake_hash) >
sizeof(ret->original_handshake_hash)) {
OPENSSL_PUT_ERROR(SSL, d2i_SSL_SESSION, SSL_R_INVALID_SSL_SESSION);
goto err;
}
memcpy(ret->original_handshake_hash, CBS_data(&original_handshake_hash),
CBS_len(&original_handshake_hash));
ret->original_handshake_hash_len = CBS_len(&original_handshake_hash);
if (a) {
*a = ret;
}
*pp = CBS_data(&cbs);
return ret;
err:
if (a && *a != ret) {
SSL_SESSION_free(ret);
}
return NULL;
}
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