8370bfd6d1
This dates all the way to SSLeay 0.9.0b. At this point the application/handshake interleave logic in ssl3_read_bytes was already present: (( (s->state & SSL_ST_CONNECT) && (s->state >= SSL3_ST_CW_CLNT_HELLO_A) && (s->state <= SSL3_ST_CR_SRVR_HELLO_A) ) || ( (s->state & SSL_ST_ACCEPT) && (s->state <= SSL3_ST_SW_HELLO_REQ_A) && (s->state >= SSL3_ST_SR_CLNT_HELLO_A) ) The comment is attached to SSL3_ST_SR_CLNT_HELLO_A, so I suspect this is what it was about. This logic is gone now, so let's remove that scary warning. Change-Id: I45f13b53b79e35d80e6074b0942600434deb0684 Reviewed-on: https://boringssl-review.googlesource.com/6299 Reviewed-by: Adam Langley <alangley@gmail.com>
697 lines
28 KiB
C
697 lines
28 KiB
C
/* ssl/ssl3.h */
|
|
/* 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 (c) 1998-2002 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* 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 above 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 acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* openssl-core@openssl.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED 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 OpenSSL PROJECT OR
|
|
* ITS 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.
|
|
* ====================================================================
|
|
*
|
|
* This product includes cryptographic software written by Eric Young
|
|
* (eay@cryptsoft.com). This product includes software written by Tim
|
|
* Hudson (tjh@cryptsoft.com).
|
|
*
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
|
|
* ECC cipher suite support in OpenSSL originally developed by
|
|
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
|
|
*/
|
|
|
|
#ifndef HEADER_SSL3_H
|
|
#define HEADER_SSL3_H
|
|
|
|
#include <openssl/aead.h>
|
|
#include <openssl/buf.h>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/ssl.h>
|
|
#include <openssl/type_check.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* These are kept to support clients that negotiates higher protocol versions
|
|
* using SSLv2 client hello records. */
|
|
#define SSL2_MT_CLIENT_HELLO 1
|
|
#define SSL2_VERSION 0x0002
|
|
|
|
/* Signalling cipher suite value from RFC 5746. */
|
|
#define SSL3_CK_SCSV 0x030000FF
|
|
/* Fallback signalling cipher suite value from RFC 7507. */
|
|
#define SSL3_CK_FALLBACK_SCSV 0x03005600
|
|
|
|
#define SSL3_CK_RSA_NULL_MD5 0x03000001
|
|
#define SSL3_CK_RSA_NULL_SHA 0x03000002
|
|
#define SSL3_CK_RSA_RC4_40_MD5 0x03000003
|
|
#define SSL3_CK_RSA_RC4_128_MD5 0x03000004
|
|
#define SSL3_CK_RSA_RC4_128_SHA 0x03000005
|
|
#define SSL3_CK_RSA_RC2_40_MD5 0x03000006
|
|
#define SSL3_CK_RSA_IDEA_128_SHA 0x03000007
|
|
#define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008
|
|
#define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009
|
|
#define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A
|
|
|
|
#define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B
|
|
#define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C
|
|
#define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D
|
|
#define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E
|
|
#define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F
|
|
#define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010
|
|
|
|
#define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011
|
|
#define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012
|
|
#define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013
|
|
#define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014
|
|
#define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015
|
|
#define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016
|
|
|
|
#define SSL3_CK_ADH_RC4_40_MD5 0x03000017
|
|
#define SSL3_CK_ADH_RC4_128_MD5 0x03000018
|
|
#define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019
|
|
#define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A
|
|
#define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B
|
|
|
|
#define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5"
|
|
#define SSL3_TXT_RSA_NULL_SHA "NULL-SHA"
|
|
#define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5"
|
|
#define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5"
|
|
#define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA"
|
|
#define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5"
|
|
#define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA"
|
|
#define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA"
|
|
#define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA"
|
|
#define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA"
|
|
|
|
#define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA"
|
|
#define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA"
|
|
#define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA"
|
|
#define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA"
|
|
#define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA"
|
|
#define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA"
|
|
|
|
#define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA"
|
|
#define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA"
|
|
#define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA"
|
|
#define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA"
|
|
#define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA"
|
|
#define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA"
|
|
|
|
#define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5"
|
|
#define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5"
|
|
#define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA"
|
|
#define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA"
|
|
#define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA"
|
|
|
|
#define SSL3_SSL_SESSION_ID_LENGTH 32
|
|
#define SSL3_MAX_SSL_SESSION_ID_LENGTH 32
|
|
|
|
#define SSL3_MASTER_SECRET_SIZE 48
|
|
#define SSL3_RANDOM_SIZE 32
|
|
#define SSL3_SESSION_ID_SIZE 32
|
|
#define SSL3_RT_HEADER_LENGTH 5
|
|
|
|
#define SSL3_HM_HEADER_LENGTH 4
|
|
|
|
#ifndef SSL3_ALIGN_PAYLOAD
|
|
/* Some will argue that this increases memory footprint, but it's not actually
|
|
* true. Point is that malloc has to return at least 64-bit aligned pointers,
|
|
* meaning that allocating 5 bytes wastes 3 bytes in either case. Suggested
|
|
* pre-gaping simply moves these wasted bytes from the end of allocated region
|
|
* to its front, but makes data payload aligned, which improves performance. */
|
|
#define SSL3_ALIGN_PAYLOAD 8
|
|
#else
|
|
#if (SSL3_ALIGN_PAYLOAD & (SSL3_ALIGN_PAYLOAD - 1)) != 0
|
|
#error "insane SSL3_ALIGN_PAYLOAD"
|
|
#undef SSL3_ALIGN_PAYLOAD
|
|
#endif
|
|
#endif
|
|
|
|
/* This is the maximum MAC (digest) size used by the SSL library. Currently
|
|
* maximum of 20 is used by SHA1, but we reserve for future extension for
|
|
* 512-bit hashes. */
|
|
|
|
#define SSL3_RT_MAX_MD_SIZE 64
|
|
|
|
/* Maximum block size used in all ciphersuites. Currently 16 for AES. */
|
|
|
|
#define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16
|
|
|
|
#define SSL3_RT_MAX_EXTRA (16384)
|
|
|
|
/* Maximum plaintext length: defined by SSL/TLS standards */
|
|
#define SSL3_RT_MAX_PLAIN_LENGTH 16384
|
|
/* Maximum compression overhead: defined by SSL/TLS standards */
|
|
#define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024
|
|
|
|
/* The standards give a maximum encryption overhead of 1024 bytes. In practice
|
|
* the value is lower than this. The overhead is the maximum number of padding
|
|
* bytes (256) plus the mac size.
|
|
*
|
|
* TODO(davidben): This derivation doesn't take AEADs into account, or TLS 1.1
|
|
* explicit nonces. It happens to work because |SSL3_RT_MAX_MD_SIZE| is larger
|
|
* than necessary and no true AEAD has variable overhead in TLS 1.2. */
|
|
#define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE)
|
|
|
|
/* SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD is the maximum overhead in encrypting a
|
|
* record. This does not include the record header. Some ciphers use explicit
|
|
* nonces, so it includes both the AEAD overhead as well as the nonce. */
|
|
#define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
|
|
(EVP_AEAD_MAX_OVERHEAD + EVP_AEAD_MAX_NONCE_LENGTH)
|
|
|
|
OPENSSL_COMPILE_ASSERT(
|
|
SSL3_RT_MAX_ENCRYPTED_OVERHEAD >= SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD,
|
|
max_overheads_are_consistent);
|
|
|
|
/* SSL3_RT_MAX_COMPRESSED_LENGTH is an alias for
|
|
* |SSL3_RT_MAX_PLAIN_LENGTH|. Compression is gone, so don't include the
|
|
* compression overhead. */
|
|
#define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH
|
|
|
|
#define SSL3_RT_MAX_ENCRYPTED_LENGTH \
|
|
(SSL3_RT_MAX_ENCRYPTED_OVERHEAD + SSL3_RT_MAX_COMPRESSED_LENGTH)
|
|
#define SSL3_RT_MAX_PACKET_SIZE \
|
|
(SSL3_RT_MAX_ENCRYPTED_LENGTH + SSL3_RT_HEADER_LENGTH)
|
|
|
|
#define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54"
|
|
#define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52"
|
|
|
|
#define SSL3_RT_CHANGE_CIPHER_SPEC 20
|
|
#define SSL3_RT_ALERT 21
|
|
#define SSL3_RT_HANDSHAKE 22
|
|
#define SSL3_RT_APPLICATION_DATA 23
|
|
|
|
/* Pseudo content type for SSL/TLS header info */
|
|
#define SSL3_RT_HEADER 0x100
|
|
|
|
#define SSL3_AL_WARNING 1
|
|
#define SSL3_AL_FATAL 2
|
|
|
|
#define SSL3_AD_CLOSE_NOTIFY 0
|
|
#define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */
|
|
#define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */
|
|
#define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */
|
|
#define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */
|
|
#define SSL3_AD_NO_CERTIFICATE 41
|
|
#define SSL3_AD_BAD_CERTIFICATE 42
|
|
#define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
|
|
#define SSL3_AD_CERTIFICATE_REVOKED 44
|
|
#define SSL3_AD_CERTIFICATE_EXPIRED 45
|
|
#define SSL3_AD_CERTIFICATE_UNKNOWN 46
|
|
#define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */
|
|
#define SSL3_AD_INAPPROPRIATE_FALLBACK 86 /* fatal */
|
|
|
|
typedef struct ssl3_record_st {
|
|
/* type is the record type. */
|
|
uint8_t type;
|
|
/* length is the number of unconsumed bytes of |data|. */
|
|
uint16_t length;
|
|
/* off is the number of consumed bytes of |data|. */
|
|
uint16_t off;
|
|
/* data is a non-owning pointer to the record contents. The total length of
|
|
* the buffer is |off| + |length|. */
|
|
uint8_t *data;
|
|
} SSL3_RECORD;
|
|
|
|
typedef struct ssl3_buffer_st {
|
|
/* buf is the memory allocated for this buffer. */
|
|
uint8_t *buf;
|
|
/* offset is the offset into |buf| which the buffer contents start at. */
|
|
uint16_t offset;
|
|
/* len is the length of the buffer contents from |buf| + |offset|. */
|
|
uint16_t len;
|
|
/* cap is how much memory beyond |buf| + |offset| is available. */
|
|
uint16_t cap;
|
|
} SSL3_BUFFER;
|
|
|
|
#define SSL3_CT_RSA_SIGN 1
|
|
#define SSL3_CT_DSS_SIGN 2
|
|
#define SSL3_CT_RSA_FIXED_DH 3
|
|
#define SSL3_CT_DSS_FIXED_DH 4
|
|
#define SSL3_CT_RSA_EPHEMERAL_DH 5
|
|
#define SSL3_CT_DSS_EPHEMERAL_DH 6
|
|
#define SSL3_CT_FORTEZZA_DMS 20
|
|
|
|
|
|
/* TODO(davidben): This flag can probably be merged into s3->change_cipher_spec
|
|
* to something tri-state. (Normal / Expect CCS / Between CCS and Finished). */
|
|
#define SSL3_FLAGS_EXPECT_CCS 0x0080
|
|
|
|
typedef struct ssl3_state_st {
|
|
long flags;
|
|
|
|
uint8_t read_sequence[8];
|
|
int read_mac_secret_size;
|
|
uint8_t read_mac_secret[EVP_MAX_MD_SIZE];
|
|
uint8_t write_sequence[8];
|
|
int write_mac_secret_size;
|
|
uint8_t write_mac_secret[EVP_MAX_MD_SIZE];
|
|
|
|
uint8_t server_random[SSL3_RANDOM_SIZE];
|
|
uint8_t client_random[SSL3_RANDOM_SIZE];
|
|
|
|
/* flags for countermeasure against known-IV weakness */
|
|
int need_record_splitting;
|
|
|
|
/* have_version is true if the connection's final version is known. Otherwise
|
|
* the version has not been negotiated yet. */
|
|
char have_version;
|
|
|
|
/* initial_handshake_complete is true if the initial handshake has
|
|
* completed. */
|
|
char initial_handshake_complete;
|
|
|
|
/* read_buffer holds data from the transport to be processed. */
|
|
SSL3_BUFFER read_buffer;
|
|
/* write_buffer holds data to be written to the transport. */
|
|
SSL3_BUFFER write_buffer;
|
|
|
|
SSL3_RECORD rrec; /* each decoded record goes in here */
|
|
|
|
/* storage for Handshake protocol data received but not yet processed by
|
|
* ssl3_read_bytes: */
|
|
uint8_t handshake_fragment[4];
|
|
unsigned int handshake_fragment_len;
|
|
|
|
/* partial write - check the numbers match */
|
|
unsigned int wnum; /* number of bytes sent so far */
|
|
int wpend_tot; /* number bytes written */
|
|
int wpend_type;
|
|
int wpend_ret; /* number of bytes submitted */
|
|
const uint8_t *wpend_buf;
|
|
|
|
/* handshake_buffer, if non-NULL, contains the handshake transcript. */
|
|
BUF_MEM *handshake_buffer;
|
|
/* handshake_hash, if initialized with an |EVP_MD|, maintains the handshake
|
|
* hash. For TLS 1.1 and below, it is the SHA-1 half. */
|
|
EVP_MD_CTX handshake_hash;
|
|
/* handshake_md5, if initialized with an |EVP_MD|, maintains the MD5 half of
|
|
* the handshake hash for TLS 1.1 and below. */
|
|
EVP_MD_CTX handshake_md5;
|
|
|
|
/* this is set whenerver we see a change_cipher_spec message come in when we
|
|
* are not looking for one */
|
|
int change_cipher_spec;
|
|
|
|
int warn_alert;
|
|
int fatal_alert;
|
|
/* we allow one fatal and one warning alert to be outstanding, send close
|
|
* alert via the warning alert */
|
|
int alert_dispatch;
|
|
uint8_t send_alert[2];
|
|
|
|
int total_renegotiations;
|
|
|
|
/* empty_record_count is the number of consecutive empty records received. */
|
|
uint8_t empty_record_count;
|
|
|
|
/* warning_alert_count is the number of consecutive warning alerts
|
|
* received. */
|
|
uint8_t warning_alert_count;
|
|
|
|
/* State pertaining to the pending handshake.
|
|
*
|
|
* TODO(davidben): State is current spread all over the place. Move
|
|
* pending handshake state here so it can be managed separately from
|
|
* established connection state in case of renegotiations. */
|
|
struct {
|
|
/* actually only need to be 16+20 for SSLv3 and 12 for TLS */
|
|
uint8_t finish_md[EVP_MAX_MD_SIZE * 2];
|
|
int finish_md_len;
|
|
uint8_t peer_finish_md[EVP_MAX_MD_SIZE * 2];
|
|
int peer_finish_md_len;
|
|
|
|
unsigned long message_size;
|
|
int message_type;
|
|
|
|
/* used to hold the new cipher we are going to use */
|
|
const SSL_CIPHER *new_cipher;
|
|
DH *dh;
|
|
|
|
EC_KEY *ecdh; /* holds short lived ECDH key */
|
|
|
|
/* used when SSL_ST_FLUSH_DATA is entered */
|
|
int next_state;
|
|
|
|
int reuse_message;
|
|
|
|
union {
|
|
/* sent is a bitset where the bits correspond to elements of kExtensions
|
|
* in t1_lib.c. Each bit is set if that extension was sent in a
|
|
* ClientHello. It's not used by servers. */
|
|
uint32_t sent;
|
|
/* received is a bitset, like |sent|, but is used by servers to record
|
|
* which extensions were received from a client. */
|
|
uint32_t received;
|
|
} extensions;
|
|
|
|
union {
|
|
/* sent is a bitset where the bits correspond to elements of
|
|
* |client_custom_extensions| in the |SSL_CTX|. Each bit is set if that
|
|
* extension was sent in a ClientHello. It's not used by servers. */
|
|
uint16_t sent;
|
|
/* received is a bitset, like |sent|, but is used by servers to record
|
|
* which custom extensions were received from a client. The bits here
|
|
* correspond to |server_custom_extensions|. */
|
|
uint16_t received;
|
|
} custom_extensions;
|
|
|
|
/* SNI extension */
|
|
|
|
/* should_ack_sni is used by a server and indicates that the SNI extension
|
|
* should be echoed in the ServerHello. */
|
|
unsigned should_ack_sni:1;
|
|
|
|
|
|
/* Client-only: cert_req determines if a client certificate is to be sent.
|
|
* This is 0 if no client Certificate message is to be sent, 1 if there is
|
|
* a client certificate, and 2 to send an empty client Certificate
|
|
* message. */
|
|
int cert_req;
|
|
|
|
/* Client-only: ca_names contains the list of CAs received in a
|
|
* CertificateRequest message. */
|
|
STACK_OF(X509_NAME) *ca_names;
|
|
|
|
/* Client-only: certificate_types contains the set of certificate types
|
|
* received in a CertificateRequest message. */
|
|
uint8_t *certificate_types;
|
|
size_t num_certificate_types;
|
|
|
|
int key_block_length;
|
|
uint8_t *key_block;
|
|
|
|
const EVP_AEAD *new_aead;
|
|
uint8_t new_mac_secret_len;
|
|
uint8_t new_fixed_iv_len;
|
|
uint8_t new_variable_iv_len;
|
|
|
|
/* Server-only: cert_request is true if a client certificate was
|
|
* requested. */
|
|
int cert_request;
|
|
|
|
/* certificate_status_expected is true if OCSP stapling was negotiated and
|
|
* the server is expected to send a CertificateStatus message. (This is
|
|
* used on both the client and server sides.) */
|
|
unsigned certificate_status_expected:1;
|
|
|
|
/* ocsp_stapling_requested is true if a client requested OCSP stapling. */
|
|
unsigned ocsp_stapling_requested:1;
|
|
|
|
/* Server-only: peer_ellipticcurvelist contains the EC curve IDs advertised
|
|
* by the peer. This is only set on the server's end. The server does not
|
|
* advertise this extension to the client. */
|
|
uint16_t *peer_ellipticcurvelist;
|
|
size_t peer_ellipticcurvelist_length;
|
|
|
|
/* extended_master_secret indicates whether the extended master secret
|
|
* computation is used in this handshake. Note that this is different from
|
|
* whether it was used for the current session. If this is a resumption
|
|
* handshake then EMS might be negotiated in the client and server hello
|
|
* messages, but it doesn't matter if the session that's being resumed
|
|
* didn't use it to create the master secret initially. */
|
|
char extended_master_secret;
|
|
|
|
/* Client-only: peer_psk_identity_hint is the psk_identity_hint sent by the
|
|
* server when using a PSK key exchange. */
|
|
char *peer_psk_identity_hint;
|
|
|
|
/* new_mac_secret_size is unused and exists only until wpa_supplicant can
|
|
* be updated. It is only needed for EAP-FAST, which we don't support. */
|
|
uint8_t new_mac_secret_size;
|
|
|
|
/* Client-only: in_false_start is one if there is a pending handshake in
|
|
* False Start. The client may write data at this point. */
|
|
char in_false_start;
|
|
|
|
/* peer_dh_tmp, on a client, is the server's DHE public key. */
|
|
DH *peer_dh_tmp;
|
|
|
|
/* peer_ecdh_tmp, on a client, is the server's ECDHE public key. */
|
|
EC_KEY *peer_ecdh_tmp;
|
|
} tmp;
|
|
|
|
/* Connection binding to prevent renegotiation attacks */
|
|
uint8_t previous_client_finished[EVP_MAX_MD_SIZE];
|
|
uint8_t previous_client_finished_len;
|
|
uint8_t previous_server_finished[EVP_MAX_MD_SIZE];
|
|
uint8_t previous_server_finished_len;
|
|
int send_connection_binding; /* TODOEKR */
|
|
|
|
/* Set if we saw the Next Protocol Negotiation extension from our peer. */
|
|
int next_proto_neg_seen;
|
|
|
|
/* ALPN information
|
|
* (we are in the process of transitioning from NPN to ALPN.) */
|
|
|
|
/* In a server these point to the selected ALPN protocol after the
|
|
* ClientHello has been processed. In a client these contain the protocol
|
|
* that the server selected once the ServerHello has been processed. */
|
|
uint8_t *alpn_selected;
|
|
size_t alpn_selected_len;
|
|
|
|
/* In a client, this means that the server supported Channel ID and that a
|
|
* Channel ID was sent. In a server it means that we echoed support for
|
|
* Channel IDs and that tlsext_channel_id will be valid after the
|
|
* handshake. */
|
|
char tlsext_channel_id_valid;
|
|
/* For a server:
|
|
* If |tlsext_channel_id_valid| is true, then this contains the
|
|
* verified Channel ID from the client: a P256 point, (x,y), where
|
|
* each are big-endian values. */
|
|
uint8_t tlsext_channel_id[64];
|
|
} SSL3_STATE;
|
|
|
|
/* SSLv3 */
|
|
/* client */
|
|
/* extra state */
|
|
#define SSL3_ST_CW_FLUSH (0x100 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_FALSE_START (0x101 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_VERIFY_SERVER_CERT (0x102 | SSL_ST_CONNECT)
|
|
/* write to server */
|
|
#define SSL3_ST_CW_CLNT_HELLO_A (0x110 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_CLNT_HELLO_B (0x111 | SSL_ST_CONNECT)
|
|
/* read from server */
|
|
#define SSL3_ST_CR_SRVR_HELLO_A (0x120 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_SRVR_HELLO_B (0x121 | SSL_ST_CONNECT)
|
|
#define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126 | SSL_ST_CONNECT)
|
|
#define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_CERT_A (0x130 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_CERT_B (0x131 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_KEY_EXCH_A (0x140 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_KEY_EXCH_B (0x141 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_CERT_REQ_A (0x150 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_CERT_REQ_B (0x151 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_SRVR_DONE_A (0x160 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_SRVR_DONE_B (0x161 | SSL_ST_CONNECT)
|
|
/* write to server */
|
|
#define SSL3_ST_CW_CERT_A (0x170 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_CERT_B (0x171 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_CERT_C (0x172 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_CERT_D (0x173 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_KEY_EXCH_A (0x180 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_KEY_EXCH_B (0x181 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_CERT_VRFY_A (0x190 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_CERT_VRFY_B (0x191 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_CERT_VRFY_C (0x192 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_CHANGE_A (0x1A0 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_CHANGE_B (0x1A1 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_NEXT_PROTO_A (0x200 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_NEXT_PROTO_B (0x201 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_CHANNEL_ID_A (0x220 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_CHANNEL_ID_B (0x221 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_FINISHED_A (0x1B0 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CW_FINISHED_B (0x1B1 | SSL_ST_CONNECT)
|
|
/* read from server */
|
|
#define SSL3_ST_CR_CHANGE (0x1C0 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_FINISHED_A (0x1D0 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_FINISHED_B (0x1D1 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_SESSION_TICKET_A (0x1E0 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_SESSION_TICKET_B (0x1E1 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_CERT_STATUS_A (0x1F0 | SSL_ST_CONNECT)
|
|
#define SSL3_ST_CR_CERT_STATUS_B (0x1F1 | SSL_ST_CONNECT)
|
|
|
|
/* server */
|
|
/* extra state */
|
|
#define SSL3_ST_SW_FLUSH (0x100 | SSL_ST_ACCEPT)
|
|
/* read from client */
|
|
#define SSL3_ST_SR_INITIAL_BYTES (0x240 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_V2_CLIENT_HELLO (0x241 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_CLNT_HELLO_A (0x110 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_CLNT_HELLO_B (0x111 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_CLNT_HELLO_C (0x112 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_CLNT_HELLO_D (0x115 | SSL_ST_ACCEPT)
|
|
/* write to client */
|
|
#define SSL3_ST_SW_HELLO_REQ_A (0x120 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_HELLO_REQ_B (0x121 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_HELLO_REQ_C (0x122 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_SRVR_HELLO_A (0x130 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_SRVR_HELLO_B (0x131 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_CERT_A (0x140 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_CERT_B (0x141 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_KEY_EXCH_A (0x150 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_KEY_EXCH_B (0x151 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_KEY_EXCH_C (0x152 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_CERT_REQ_A (0x160 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_CERT_REQ_B (0x161 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_SRVR_DONE_A (0x170 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_SRVR_DONE_B (0x171 | SSL_ST_ACCEPT)
|
|
/* read from client */
|
|
#define SSL3_ST_SR_CERT_A (0x180 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_CERT_B (0x181 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_KEY_EXCH_A (0x190 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_KEY_EXCH_B (0x191 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_CERT_VRFY_A (0x1A0 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_CERT_VRFY_B (0x1A1 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_CHANGE (0x1B0 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_NEXT_PROTO_A (0x210 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_NEXT_PROTO_B (0x211 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_CHANNEL_ID_A (0x230 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_CHANNEL_ID_B (0x231 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_FINISHED_A (0x1C0 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SR_FINISHED_B (0x1C1 | SSL_ST_ACCEPT)
|
|
|
|
/* write to client */
|
|
#define SSL3_ST_SW_CHANGE_A (0x1D0 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_CHANGE_B (0x1D1 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_FINISHED_A (0x1E0 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_FINISHED_B (0x1E1 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_SESSION_TICKET_A (0x1F0 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_SESSION_TICKET_B (0x1F1 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_CERT_STATUS_A (0x200 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_CERT_STATUS_B (0x201 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_SUPPLEMENTAL_DATA_A (0x220 | SSL_ST_ACCEPT)
|
|
#define SSL3_ST_SW_SUPPLEMENTAL_DATA_B (0x221 | SSL_ST_ACCEPT)
|
|
|
|
#define SSL3_MT_HELLO_REQUEST 0
|
|
#define SSL3_MT_CLIENT_HELLO 1
|
|
#define SSL3_MT_SERVER_HELLO 2
|
|
#define SSL3_MT_NEWSESSION_TICKET 4
|
|
#define SSL3_MT_CERTIFICATE 11
|
|
#define SSL3_MT_SERVER_KEY_EXCHANGE 12
|
|
#define SSL3_MT_CERTIFICATE_REQUEST 13
|
|
#define SSL3_MT_SERVER_DONE 14
|
|
#define SSL3_MT_CERTIFICATE_VERIFY 15
|
|
#define SSL3_MT_CLIENT_KEY_EXCHANGE 16
|
|
#define SSL3_MT_FINISHED 20
|
|
#define SSL3_MT_CERTIFICATE_STATUS 22
|
|
#define SSL3_MT_SUPPLEMENTAL_DATA 23
|
|
#define SSL3_MT_NEXT_PROTO 67
|
|
#define SSL3_MT_ENCRYPTED_EXTENSIONS 203
|
|
#define DTLS1_MT_HELLO_VERIFY_REQUEST 3
|
|
|
|
|
|
#define SSL3_MT_CCS 1
|
|
|
|
/* These are used when changing over to a new cipher */
|
|
#define SSL3_CC_READ 0x01
|
|
#define SSL3_CC_WRITE 0x02
|
|
#define SSL3_CC_CLIENT 0x10
|
|
#define SSL3_CC_SERVER 0x20
|
|
#define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT | SSL3_CC_WRITE)
|
|
#define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER | SSL3_CC_READ)
|
|
#define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT | SSL3_CC_READ)
|
|
#define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER | SSL3_CC_WRITE)
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif
|