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openssl/ssl/ssl_locl.h
Matt Caswell 32ec41539b Server side version negotiation rewrite 
This commit changes the way that we do server side protocol version
negotiation. Previously we had a whole set of code that had an "up front"
state machine dedicated to the negotiating the protocol version. This adds
significant complexity to the state machine. Historically the justification
for doing this was the support of SSLv2 which works quite differently to
SSLv3+. However, we have now removed support for SSLv2 so there is little
reason to maintain this complexity.

The one slight difficulty is that, although we no longer support SSLv2, we
do still support an SSLv3+ ClientHello in an SSLv2 backward compatible
ClientHello format. This is generally only used by legacy clients. This
commit adds support within the SSLv3 code for these legacy format
ClientHellos.

Server side version negotiation now works in much the same was as DTLS,
i.e. we introduce the concept of TLS_ANY_VERSION. If s->version is set to
that then when a ClientHello is received it will work out the most
appropriate version to respond with. Also, SSLv23_method and
SSLv23_server_method have been replaced with TLS_method and
TLS_server_method respectively. The old SSLv23* names still exist as
macros pointing at the new name, although they are deprecated.

Subsequent commits will look at client side version negotiation, as well of
removal of the old s23* code.

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2015-05-16 09:19:56 +01:00

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/* ssl/ssl_locl.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) 1998-2007 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.
*/
/* ====================================================================
* 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.
*/
#ifndef HEADER_SSL_LOCL_H
# define HEADER_SSL_LOCL_H
# include <stdlib.h>
# include <time.h>
# include <string.h>
# include <errno.h>
# include "e_os.h"
# include <openssl/buffer.h>
# ifndef OPENSSL_NO_COMP
# include <openssl/comp.h>
# endif
# include <openssl/bio.h>
# include <openssl/stack.h>
# ifndef OPENSSL_NO_RSA
# include <openssl/rsa.h>
# endif
# ifndef OPENSSL_NO_DSA
# include <openssl/dsa.h>
# endif
# include <openssl/err.h>
# include <openssl/ssl.h>
# include <openssl/symhacks.h>
#include "record/record.h"
# ifdef OPENSSL_BUILD_SHLIBSSL
# undef OPENSSL_EXTERN
# define OPENSSL_EXTERN OPENSSL_EXPORT
# endif
# undef PKCS1_CHECK
# define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
l|=(((unsigned long)(*((c)++)))<< 8), \
l|=(((unsigned long)(*((c)++)))<<16), \
l|=(((unsigned long)(*((c)++)))<<24))
/* NOTE - c is not incremented as per c2l */
# define c2ln(c,l1,l2,n) { \
c+=n; \
l1=l2=0; \
switch (n) { \
case 8: l2 =((unsigned long)(*(--(c))))<<24; \
case 7: l2|=((unsigned long)(*(--(c))))<<16; \
case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
case 5: l2|=((unsigned long)(*(--(c)))); \
case 4: l1 =((unsigned long)(*(--(c))))<<24; \
case 3: l1|=((unsigned long)(*(--(c))))<<16; \
case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
case 1: l1|=((unsigned long)(*(--(c)))); \
} \
}
# define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff))
# define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
l|=((unsigned long)(*((c)++)))<<16, \
l|=((unsigned long)(*((c)++)))<< 8, \
l|=((unsigned long)(*((c)++))))
# define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
# define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
*((c)++)=(unsigned char)(((l)>>32)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
# define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
*((c)++)=(unsigned char)(((l)>>48)&0xff), \
*((c)++)=(unsigned char)(((l)>>40)&0xff), \
*((c)++)=(unsigned char)(((l)>>32)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
# define n2l6(c,l) (l =((BN_ULLONG)(*((c)++)))<<40, \
l|=((BN_ULLONG)(*((c)++)))<<32, \
l|=((BN_ULLONG)(*((c)++)))<<24, \
l|=((BN_ULLONG)(*((c)++)))<<16, \
l|=((BN_ULLONG)(*((c)++)))<< 8, \
l|=((BN_ULLONG)(*((c)++))))
/* NOTE - c is not incremented as per l2c */
# define l2cn(l1,l2,c,n) { \
c+=n; \
switch (n) { \
case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
} \
}
# define n2s(c,s) ((s=(((unsigned int)(c[0]))<< 8)| \
(((unsigned int)(c[1])) )),c+=2)
# define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
c[1]=(unsigned char)(((s) )&0xff)),c+=2)
# define n2l3(c,l) ((l =(((unsigned long)(c[0]))<<16)| \
(((unsigned long)(c[1]))<< 8)| \
(((unsigned long)(c[2])) )),c+=3)
# define l2n3(l,c) ((c[0]=(unsigned char)(((l)>>16)&0xff), \
c[1]=(unsigned char)(((l)>> 8)&0xff), \
c[2]=(unsigned char)(((l) )&0xff)),c+=3)
/* LOCAL STUFF */
# define SSL_DECRYPT 0
# define SSL_ENCRYPT 1
# define TWO_BYTE_BIT 0x80
# define SEC_ESC_BIT 0x40
# define TWO_BYTE_MASK 0x7fff
# define THREE_BYTE_MASK 0x3fff
# define INC32(a) ((a)=((a)+1)&0xffffffffL)
# define DEC32(a) ((a)=((a)-1)&0xffffffffL)
# define MAX_MAC_SIZE 20 /* up from 16 for SSLv3 */
/*
* Define the Bitmasks for SSL_CIPHER.algorithms.
* This bits are used packed as dense as possible. If new methods/ciphers
* etc will be added, the bits a likely to change, so this information
* is for internal library use only, even though SSL_CIPHER.algorithms
* can be publicly accessed.
* Use the according functions for cipher management instead.
*
* The bit mask handling in the selection and sorting scheme in
* ssl_create_cipher_list() has only limited capabilities, reflecting
* that the different entities within are mutually exclusive:
* ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
*/
/* Bits for algorithm_mkey (key exchange algorithm) */
/* RSA key exchange */
# define SSL_kRSA 0x00000001L
/* DH cert, RSA CA cert */
# define SSL_kDHr 0x00000002L
/* DH cert, DSA CA cert */
# define SSL_kDHd 0x00000004L
/* tmp DH key no DH cert */
# define SSL_kDHE 0x00000008L
/* synonym */
# define SSL_kEDH SSL_kDHE
/* ECDH cert, RSA CA cert */
# define SSL_kECDHr 0x00000020L
/* ECDH cert, ECDSA CA cert */
# define SSL_kECDHe 0x00000040L
/* ephemeral ECDH */
# define SSL_kECDHE 0x00000080L
/* synonym */
# define SSL_kEECDH SSL_kECDHE
/* PSK */
# define SSL_kPSK 0x00000100L
/* GOST key exchange */
# define SSL_kGOST 0x00000200L
/* SRP */
# define SSL_kSRP 0x00000400L
/* Bits for algorithm_auth (server authentication) */
/* RSA auth */
# define SSL_aRSA 0x00000001L
/* DSS auth */
# define SSL_aDSS 0x00000002L
/* no auth (i.e. use ADH or AECDH) */
# define SSL_aNULL 0x00000004L
/* Fixed DH auth (kDHd or kDHr) */
# define SSL_aDH 0x00000008L
/* Fixed ECDH auth (kECDHe or kECDHr) */
# define SSL_aECDH 0x00000010L
/* ECDSA auth*/
# define SSL_aECDSA 0x00000040L
/* PSK auth */
# define SSL_aPSK 0x00000080L
/* GOST R 34.10-94 signature auth */
# define SSL_aGOST94 0x00000100L
/* GOST R 34.10-2001 signature auth */
# define SSL_aGOST01 0x00000200L
/* SRP auth */
# define SSL_aSRP 0x00000400L
/* Bits for algorithm_enc (symmetric encryption) */
# define SSL_DES 0x00000001L
# define SSL_3DES 0x00000002L
# define SSL_RC4 0x00000004L
# define SSL_RC2 0x00000008L
# define SSL_IDEA 0x00000010L
# define SSL_eNULL 0x00000020L
# define SSL_AES128 0x00000040L
# define SSL_AES256 0x00000080L
# define SSL_CAMELLIA128 0x00000100L
# define SSL_CAMELLIA256 0x00000200L
# define SSL_eGOST2814789CNT 0x00000400L
# define SSL_SEED 0x00000800L
# define SSL_AES128GCM 0x00001000L
# define SSL_AES256GCM 0x00002000L
# define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM)
# define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
/* Bits for algorithm_mac (symmetric authentication) */
# define SSL_MD5 0x00000001L
# define SSL_SHA1 0x00000002L
# define SSL_GOST94 0x00000004L
# define SSL_GOST89MAC 0x00000008L
# define SSL_SHA256 0x00000010L
# define SSL_SHA384 0x00000020L
/* Not a real MAC, just an indication it is part of cipher */
# define SSL_AEAD 0x00000040L
/* Bits for algorithm_ssl (protocol version) */
# define SSL_SSLV3 0x00000002L
# define SSL_TLSV1 SSL_SSLV3/* for now */
# define SSL_TLSV1_2 0x00000004L
/* Bits for algorithm2 (handshake digests and other extra flags) */
# define SSL_HANDSHAKE_MAC_MD5 0x10
# define SSL_HANDSHAKE_MAC_SHA 0x20
# define SSL_HANDSHAKE_MAC_GOST94 0x40
# define SSL_HANDSHAKE_MAC_SHA256 0x80
# define SSL_HANDSHAKE_MAC_SHA384 0x100
# define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA)
/*
* When adding new digest in the ssl_ciph.c and increment SSM_MD_NUM_IDX make
* sure to update this constant too
*/
# define SSL_MAX_DIGEST 6
# define TLS1_PRF_DGST_SHIFT 10
# define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1)
/*
* Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
* goes into algorithm2)
*/
# define TLS1_STREAM_MAC 0x04
/*
* Export and cipher strength information. For each cipher we have to decide
* whether it is exportable or not. This information is likely to change
* over time, since the export control rules are no static technical issue.
*
* Independent of the export flag the cipher strength is sorted into classes.
* SSL_EXP40 was denoting the 40bit US export limit of past times, which now
* is at 56bit (SSL_EXP56). If the exportable cipher class is going to change
* again (eg. to 64bit) the use of "SSL_EXP*" becomes blurred even more,
* since SSL_EXP64 could be similar to SSL_LOW.
* For this reason SSL_MICRO and SSL_MINI macros are included to widen the
* namespace of SSL_LOW-SSL_HIGH to lower values. As development of speed
* and ciphers goes, another extension to SSL_SUPER and/or SSL_ULTRA would
* be possible.
*/
# define SSL_EXP_MASK 0x00000003L
# define SSL_STRONG_MASK 0x000001fcL
# define SSL_NOT_EXP 0x00000001L
# define SSL_EXPORT 0x00000002L
# define SSL_STRONG_NONE 0x00000004L
# define SSL_EXP40 0x00000008L
# define SSL_MICRO (SSL_EXP40)
# define SSL_EXP56 0x00000010L
# define SSL_MINI (SSL_EXP56)
# define SSL_LOW 0x00000020L
# define SSL_MEDIUM 0x00000040L
# define SSL_HIGH 0x00000080L
# define SSL_FIPS 0x00000100L
/* we have used 000001ff - 23 bits left to go */
/*-
* Macros to check the export status and cipher strength for export ciphers.
* Even though the macros for EXPORT and EXPORT40/56 have similar names,
* their meaning is different:
* *_EXPORT macros check the 'exportable' status.
* *_EXPORT40/56 macros are used to check whether a certain cipher strength
* is given.
* Since the SSL_IS_EXPORT* and SSL_EXPORT* macros depend on the correct
* algorithm structure element to be passed (algorithms, algo_strength) and no
* typechecking can be done as they are all of type unsigned long, their
* direct usage is discouraged.
* Use the SSL_C_* macros instead.
*/
# define SSL_IS_EXPORT(a) ((a)&SSL_EXPORT)
# define SSL_IS_EXPORT56(a) ((a)&SSL_EXP56)
# define SSL_IS_EXPORT40(a) ((a)&SSL_EXP40)
# define SSL_C_IS_EXPORT(c) SSL_IS_EXPORT((c)->algo_strength)
# define SSL_C_IS_EXPORT56(c) SSL_IS_EXPORT56((c)->algo_strength)
# define SSL_C_IS_EXPORT40(c) SSL_IS_EXPORT40((c)->algo_strength)
# define SSL_EXPORT_KEYLENGTH(a,s) (SSL_IS_EXPORT40(s) ? 5 : \
(a) == SSL_DES ? 8 : 7)
# define SSL_EXPORT_PKEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 512 : 1024)
# define SSL_C_EXPORT_KEYLENGTH(c) SSL_EXPORT_KEYLENGTH((c)->algorithm_enc, \
(c)->algo_strength)
# define SSL_C_EXPORT_PKEYLENGTH(c) SSL_EXPORT_PKEYLENGTH((c)->algo_strength)
/* Check if an SSL structure is using DTLS */
# define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
/* See if we need explicit IV */
# define SSL_USE_EXPLICIT_IV(s) \
(s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
/*
* See if we use signature algorithms extension and signature algorithm
* before signatures.
*/
# define SSL_USE_SIGALGS(s) \
(s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
/*
* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
* apply to others in future.
*/
# define SSL_USE_TLS1_2_CIPHERS(s) \
(s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
/*
* Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
* flags because it may not be set to correct version yet.
*/
# define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
((SSL_IS_DTLS(s) && s->client_version <= DTLS1_2_VERSION) || \
(!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION))
# ifdef TLSEXT_TYPE_encrypt_then_mac
# define SSL_USE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC)
# else
# define SSL_USE_ETM(s) (0)
# endif
/* Mostly for SSLv3 */
# define SSL_PKEY_RSA_ENC 0
# define SSL_PKEY_RSA_SIGN 1
# define SSL_PKEY_DSA_SIGN 2
# define SSL_PKEY_DH_RSA 3
# define SSL_PKEY_DH_DSA 4
# define SSL_PKEY_ECC 5
# define SSL_PKEY_GOST94 6
# define SSL_PKEY_GOST01 7
# define SSL_PKEY_NUM 8
/*-
* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
* <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
* SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
* SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
* SSL_aRSA <- RSA_ENC | RSA_SIGN
* SSL_aDSS <- DSA_SIGN
*/
/*-
#define CERT_INVALID 0
#define CERT_PUBLIC_KEY 1
#define CERT_PRIVATE_KEY 2
*/
/* used to hold info on the particular ciphers used */
struct ssl_cipher_st {
int valid;
const char *name; /* text name */
unsigned long id; /* id, 4 bytes, first is version */
/*
* changed in 0.9.9: these four used to be portions of a single value
* 'algorithms'
*/
unsigned long algorithm_mkey; /* key exchange algorithm */
unsigned long algorithm_auth; /* server authentication */
unsigned long algorithm_enc; /* symmetric encryption */
unsigned long algorithm_mac; /* symmetric authentication */
unsigned long algorithm_ssl; /* (major) protocol version */
unsigned long algo_strength; /* strength and export flags */
unsigned long algorithm2; /* Extra flags */
int strength_bits; /* Number of bits really used */
int alg_bits; /* Number of bits for algorithm */
};
/* Used to hold functions for SSLv2 or SSLv3/TLSv1 functions */
struct ssl_method_st {
int version;
int (*ssl_new) (SSL *s);
void (*ssl_clear) (SSL *s);
void (*ssl_free) (SSL *s);
int (*ssl_accept) (SSL *s);
int (*ssl_connect) (SSL *s);
int (*ssl_read) (SSL *s, void *buf, int len);
int (*ssl_peek) (SSL *s, void *buf, int len);
int (*ssl_write) (SSL *s, const void *buf, int len);
int (*ssl_shutdown) (SSL *s);
int (*ssl_renegotiate) (SSL *s);
int (*ssl_renegotiate_check) (SSL *s);
long (*ssl_get_message) (SSL *s, int st1, int stn, int mt, long
max, int *ok);
int (*ssl_read_bytes) (SSL *s, int type, unsigned char *buf, int len,
int peek);
int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, int len);
int (*ssl_dispatch_alert) (SSL *s);
long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
int (*put_cipher_by_char) (const SSL_CIPHER *cipher, unsigned char *ptr);
int (*ssl_pending) (const SSL *s);
int (*num_ciphers) (void);
const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
const struct ssl_method_st *(*get_ssl_method) (int version);
long (*get_timeout) (void);
const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
int (*ssl_version) (void);
long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
};
/*-
* Lets make this into an ASN.1 type structure as follows
* SSL_SESSION_ID ::= SEQUENCE {
* version INTEGER, -- structure version number
* SSLversion INTEGER, -- SSL version number
* Cipher OCTET STRING, -- the 3 byte cipher ID
* Session_ID OCTET STRING, -- the Session ID
* Master_key OCTET STRING, -- the master key
* Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
* Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
* Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
* Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
* Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
* Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
* HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
* PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
* PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
* Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
* Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
* Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
* SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
* flags [ 13 ] EXPLICIT INTEGER -- optional flags
* }
* Look in ssl/ssl_asn1.c for more details
* I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
*/
struct ssl_session_st {
int ssl_version; /* what ssl version session info is being
* kept in here? */
int master_key_length;
unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];
/* session_id - valid? */
unsigned int session_id_length;
unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
/*
* this is used to determine whether the session is being reused in the
* appropriate context. It is up to the application to set this, via
* SSL_new
*/
unsigned int sid_ctx_length;
unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
# ifndef OPENSSL_NO_PSK
char *psk_identity_hint;
char *psk_identity;
# endif
/*
* Used to indicate that session resumption is not allowed. Applications
* can also set this bit for a new session via not_resumable_session_cb
* to disable session caching and tickets.
*/
int not_resumable;
/* The cert is the certificate used to establish this connection */
struct sess_cert_st /* SESS_CERT */ *sess_cert;
/*
* This is the cert for the other end. On clients, it will be the same as
* sess_cert->peer_key->x509 (the latter is not enough as sess_cert is
* not retained in the external representation of sessions, see
* ssl_asn1.c).
*/
X509 *peer;
/*
* when app_verify_callback accepts a session where the peer's
* certificate is not ok, we must remember the error for session reuse:
*/
long verify_result; /* only for servers */
int references;
long timeout;
long time;
unsigned int compress_meth; /* Need to lookup the method */
const SSL_CIPHER *cipher;
unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used
* to load the 'cipher' structure */
STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */
CRYPTO_EX_DATA ex_data; /* application specific data */
/*
* These are used to make removal of session-ids more efficient and to
* implement a maximum cache size.
*/
struct ssl_session_st *prev, *next;
# ifndef OPENSSL_NO_TLSEXT
char *tlsext_hostname;
# ifndef OPENSSL_NO_EC
size_t tlsext_ecpointformatlist_length;
unsigned char *tlsext_ecpointformatlist; /* peer's list */
size_t tlsext_ellipticcurvelist_length;
unsigned char *tlsext_ellipticcurvelist; /* peer's list */
# endif /* OPENSSL_NO_EC */
/* RFC4507 info */
unsigned char *tlsext_tick; /* Session ticket */
size_t tlsext_ticklen; /* Session ticket length */
unsigned long tlsext_tick_lifetime_hint; /* Session lifetime hint in seconds */
# endif
# ifndef OPENSSL_NO_SRP
char *srp_username;
# endif
long flags;
};
/* Extended master secret support */
# define SSL_SESS_FLAG_EXTMS 0x1
# ifndef OPENSSL_NO_SRP
typedef struct srp_ctx_st {
/* param for all the callbacks */
void *SRP_cb_arg;
/* set client Hello login callback */
int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
/* set SRP N/g param callback for verification */
int (*SRP_verify_param_callback) (SSL *, void *);
/* set SRP client passwd callback */
char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
char *login;
BIGNUM *N, *g, *s, *B, *A;
BIGNUM *a, *b, *v;
char *info;
int strength;
unsigned long srp_Mask;
} SRP_CTX;
# endif
typedef struct ssl_comp_st SSL_COMP;
struct ssl_comp_st {
int id;
const char *name;
COMP_METHOD *method;
};
DECLARE_STACK_OF(SSL_COMP)
DECLARE_LHASH_OF(SSL_SESSION);
struct ssl_ctx_st {
const SSL_METHOD *method;
STACK_OF(SSL_CIPHER) *cipher_list;
/* same as above but sorted for lookup */
STACK_OF(SSL_CIPHER) *cipher_list_by_id;
struct x509_store_st /* X509_STORE */ *cert_store;
LHASH_OF(SSL_SESSION) *sessions;
/*
* Most session-ids that will be cached, default is
* SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
*/
unsigned long session_cache_size;
struct ssl_session_st *session_cache_head;
struct ssl_session_st *session_cache_tail;
/*
* This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
* SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
* means only SSL_accept which cache SSL_SESSIONS.
*/
int session_cache_mode;
/*
* If timeout is not 0, it is the default timeout value set when
* SSL_new() is called. This has been put in to make life easier to set
* things up
*/
long session_timeout;
/*
* If this callback is not null, it will be called each time a session id
* is added to the cache. If this function returns 1, it means that the
* callback will do a SSL_SESSION_free() when it has finished using it.
* Otherwise, on 0, it means the callback has finished with it. If
* remove_session_cb is not null, it will be called when a session-id is
* removed from the cache. After the call, OpenSSL will
* SSL_SESSION_free() it.
*/
int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
unsigned char *data, int len, int *copy);
struct {
int sess_connect; /* SSL new conn - started */
int sess_connect_renegotiate; /* SSL reneg - requested */
int sess_connect_good; /* SSL new conne/reneg - finished */
int sess_accept; /* SSL new accept - started */
int sess_accept_renegotiate; /* SSL reneg - requested */
int sess_accept_good; /* SSL accept/reneg - finished */
int sess_miss; /* session lookup misses */
int sess_timeout; /* reuse attempt on timeouted session */
int sess_cache_full; /* session removed due to full cache */
int sess_hit; /* session reuse actually done */
int sess_cb_hit; /* session-id that was not in the cache was
* passed back via the callback. This
* indicates that the application is
* supplying session-id's from other
* processes - spooky :-) */
} stats;
int references;
/* if defined, these override the X509_verify_cert() calls */
int (*app_verify_callback) (X509_STORE_CTX *, void *);
void *app_verify_arg;
/*
* before OpenSSL 0.9.7, 'app_verify_arg' was ignored
* ('app_verify_callback' was called with just one argument)
*/
/* Default password callback. */
pem_password_cb *default_passwd_callback;
/* Default password callback user data. */
void *default_passwd_callback_userdata;
/* get client cert callback */
int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
/* cookie generate callback */
int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
unsigned int *cookie_len);
/* verify cookie callback */
int (*app_verify_cookie_cb) (SSL *ssl, unsigned char *cookie,
unsigned int cookie_len);
CRYPTO_EX_DATA ex_data;
const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */
STACK_OF(X509) *extra_certs;
STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
/* Default values used when no per-SSL value is defined follow */
/* used if SSL's info_callback is NULL */
void (*info_callback) (const SSL *ssl, int type, int val);
/* what we put in client cert requests */
STACK_OF(X509_NAME) *client_CA;
/*
* Default values to use in SSL structures follow (these are copied by
* SSL_new)
*/
unsigned long options;
unsigned long mode;
long max_cert_list;
struct cert_st /* CERT */ *cert;
int read_ahead;
/* callback that allows applications to peek at protocol messages */
void (*msg_callback) (int write_p, int version, int content_type,
const void *buf, size_t len, SSL *ssl, void *arg);
void *msg_callback_arg;
int verify_mode;
unsigned int sid_ctx_length;
unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
/* called 'verify_callback' in the SSL */
int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
/* Default generate session ID callback. */
GEN_SESSION_CB generate_session_id;
X509_VERIFY_PARAM *param;
int quiet_shutdown;
/*
* Maximum amount of data to send in one fragment. actual record size can
* be more than this due to padding and MAC overheads.
*/
unsigned int max_send_fragment;
# ifndef OPENSSL_NO_ENGINE
/*
* Engine to pass requests for client certs to
*/
ENGINE *client_cert_engine;
# endif
# ifndef OPENSSL_NO_TLSEXT
/* TLS extensions servername callback */
int (*tlsext_servername_callback) (SSL *, int *, void *);
void *tlsext_servername_arg;
/* RFC 4507 session ticket keys */
unsigned char tlsext_tick_key_name[16];
unsigned char tlsext_tick_hmac_key[16];
unsigned char tlsext_tick_aes_key[16];
/* Callback to support customisation of ticket key setting */
int (*tlsext_ticket_key_cb) (SSL *ssl,
unsigned char *name, unsigned char *iv,
EVP_CIPHER_CTX *ectx,
HMAC_CTX *hctx, int enc);
/* certificate status request info */
/* Callback for status request */
int (*tlsext_status_cb) (SSL *ssl, void *arg);
void *tlsext_status_arg;
# endif
# ifndef OPENSSL_NO_PSK
char *psk_identity_hint;
unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
char *identity,
unsigned int max_identity_len,
unsigned char *psk,
unsigned int max_psk_len);
unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
unsigned char *psk,
unsigned int max_psk_len);
# endif
# ifndef OPENSSL_NO_SRP
SRP_CTX srp_ctx; /* ctx for SRP authentication */
# endif
# ifndef OPENSSL_NO_TLSEXT
# ifndef OPENSSL_NO_NEXTPROTONEG
/* Next protocol negotiation information */
/* (for experimental NPN extension). */
/*
* For a server, this contains a callback function by which the set of
* advertised protocols can be provided.
*/
int (*next_protos_advertised_cb) (SSL *s, const unsigned char **buf,
unsigned int *len, void *arg);
void *next_protos_advertised_cb_arg;
/*
* For a client, this contains a callback function that selects the next
* protocol from the list provided by the server.
*/
int (*next_proto_select_cb) (SSL *s, unsigned char **out,
unsigned char *outlen,
const unsigned char *in,
unsigned int inlen, void *arg);
void *next_proto_select_cb_arg;
# endif
/*
* ALPN information (we are in the process of transitioning from NPN to
* ALPN.)
*/
/*-
* For a server, this contains a callback function that allows the
* server to select the protocol for the connection.
* out: on successful return, this must point to the raw protocol
* name (without the length prefix).
* outlen: on successful return, this contains the length of |*out|.
* in: points to the client's list of supported protocols in
* wire-format.
* inlen: the length of |in|.
*/
int (*alpn_select_cb) (SSL *s,
const unsigned char **out,
unsigned char *outlen,
const unsigned char *in,
unsigned int inlen, void *arg);
void *alpn_select_cb_arg;
/*
* For a client, this contains the list of supported protocols in wire
* format.
*/
unsigned char *alpn_client_proto_list;
unsigned alpn_client_proto_list_len;
/* SRTP profiles we are willing to do from RFC 5764 */
STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
# endif
/*
* Callback for disabling session caching and ticket support on a session
* basis, depending on the chosen cipher.
*/
int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
# ifndef OPENSSL_NO_EC
/* EC extension values inherited by SSL structure */
size_t tlsext_ecpointformatlist_length;
unsigned char *tlsext_ecpointformatlist;
size_t tlsext_ellipticcurvelist_length;
unsigned char *tlsext_ellipticcurvelist;
# endif /* OPENSSL_NO_EC */
};
struct ssl_st {
/*
* protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
* DTLS1_VERSION)
*/
int version;
/* SSL_ST_CONNECT or SSL_ST_ACCEPT */
int type;
/* SSLv3 */
const SSL_METHOD *method;
/*
* There are 2 BIO's even though they are normally both the same. This
* is so data can be read and written to different handlers
*/
/* used by SSL_read */
BIO *rbio;
/* used by SSL_write */
BIO *wbio;
/* used during session-id reuse to concatenate messages */
BIO *bbio;
/*
* This holds a variable that indicates what we were doing when a 0 or -1
* is returned. This is needed for non-blocking IO so we know what
* request needs re-doing when in SSL_accept or SSL_connect
*/
int rwstate;
/* true when we are actually in SSL_accept() or SSL_connect() */
int in_handshake;
int (*handshake_func) (SSL *);
/*
* Imagine that here's a boolean member "init" that is switched as soon
* as SSL_set_{accept/connect}_state is called for the first time, so
* that "state" and "handshake_func" are properly initialized. But as
* handshake_func is == 0 until then, we use this test instead of an
* "init" member.
*/
/* are we the server side? - mostly used by SSL_clear */
int server;
/*
* Generate a new session or reuse an old one.
* NB: For servers, the 'new' session may actually be a previously
* cached session or even the previous session unless
* SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
*/
int new_session;
/* don't send shutdown packets */
int quiet_shutdown;
/* we have shut things down, 0x01 sent, 0x02 for received */
int shutdown;
/* where we are */
int state;
BUF_MEM *init_buf; /* buffer used during init */
void *init_msg; /* pointer to handshake message body, set by
* ssl3_get_message() */
int init_num; /* amount read/written */
int init_off; /* amount read/written */
struct ssl3_state_st *s3; /* SSLv3 variables */
struct dtls1_state_st *d1; /* DTLSv1 variables */
/* callback that allows applications to peek at protocol messages */
void (*msg_callback) (int write_p, int version, int content_type,
const void *buf, size_t len, SSL *ssl, void *arg);
void *msg_callback_arg;
int hit; /* reusing a previous session */
X509_VERIFY_PARAM *param;
/* crypto */
STACK_OF(SSL_CIPHER) *cipher_list;
STACK_OF(SSL_CIPHER) *cipher_list_by_id;
/*
* These are the ones being used, the ones in SSL_SESSION are the ones to
* be 'copied' into these ones
*/
int mac_flags;
EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
EVP_MD_CTX *read_hash; /* used for mac generation */
COMP_CTX *compress; /* compression */
COMP_CTX *expand; /* uncompress */
EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
EVP_MD_CTX *write_hash; /* used for mac generation */
/* session info */
/* client cert? */
/* This is used to hold the server certificate used */
struct cert_st /* CERT */ *cert;
/*
* the session_id_context is used to ensure sessions are only reused in
* the appropriate context
*/
unsigned int sid_ctx_length;
unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
/* This can also be in the session once a session is established */
SSL_SESSION *session;
/* Default generate session ID callback. */
GEN_SESSION_CB generate_session_id;
/* Used in SSL3 */
/*
* 0 don't care about verify failure.
* 1 fail if verify fails
*/
int verify_mode;
/* fail if callback returns 0 */
int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
/* optional informational callback */
void (*info_callback) (const SSL *ssl, int type, int val);
/* error bytes to be written */
int error;
/* actual code */
int error_code;
# ifndef OPENSSL_NO_PSK
unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
char *identity,
unsigned int max_identity_len,
unsigned char *psk,
unsigned int max_psk_len);
unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
unsigned char *psk,
unsigned int max_psk_len);
# endif
SSL_CTX *ctx;
/*
* set this flag to 1 and a sleep(1) is put into all SSL_read() and
* SSL_write() calls, good for nbio debuging :-)
*/
int debug;
/* extra application data */
long verify_result;
CRYPTO_EX_DATA ex_data;
/* for server side, keep the list of CA_dn we can use */
STACK_OF(X509_NAME) *client_CA;
int references;
/* protocol behaviour */
unsigned long options;
/* API behaviour */
unsigned long mode;
long max_cert_list;
int first_packet;
/* what was passed, used for SSLv3/TLS rollback check */
int client_version;
unsigned int max_send_fragment;
# ifndef OPENSSL_NO_TLSEXT
/* TLS extension debug callback */
void (*tlsext_debug_cb) (SSL *s, int client_server, int type,
unsigned char *data, int len, void *arg);
void *tlsext_debug_arg;
char *tlsext_hostname;
/*-
* no further mod of servername
* 0 : call the servername extension callback.
* 1 : prepare 2, allow last ack just after in server callback.
* 2 : don't call servername callback, no ack in server hello
*/
int servername_done;
/* certificate status request info */
/* Status type or -1 if no status type */
int tlsext_status_type;
/* Expect OCSP CertificateStatus message */
int tlsext_status_expected;
/* OCSP status request only */
STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids;
X509_EXTENSIONS *tlsext_ocsp_exts;
/* OCSP response received or to be sent */
unsigned char *tlsext_ocsp_resp;
int tlsext_ocsp_resplen;
/* RFC4507 session ticket expected to be received or sent */
int tlsext_ticket_expected;
# ifndef OPENSSL_NO_EC
size_t tlsext_ecpointformatlist_length;
/* our list */
unsigned char *tlsext_ecpointformatlist;
size_t tlsext_ellipticcurvelist_length;
/* our list */
unsigned char *tlsext_ellipticcurvelist;
# endif /* OPENSSL_NO_EC */
/* TLS Session Ticket extension override */
TLS_SESSION_TICKET_EXT *tlsext_session_ticket;
/* TLS Session Ticket extension callback */
tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb;
void *tls_session_ticket_ext_cb_arg;
/* TLS pre-shared secret session resumption */
tls_session_secret_cb_fn tls_session_secret_cb;
void *tls_session_secret_cb_arg;
SSL_CTX *initial_ctx; /* initial ctx, used to store sessions */
# ifndef OPENSSL_NO_NEXTPROTONEG
/*
* Next protocol negotiation. For the client, this is the protocol that
* we sent in NextProtocol and is set when handling ServerHello
* extensions. For a server, this is the client's selected_protocol from
* NextProtocol and is set when handling the NextProtocol message, before
* the Finished message.
*/
unsigned char *next_proto_negotiated;
unsigned char next_proto_negotiated_len;
# endif
# define session_ctx initial_ctx
/* What we'll do */
STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
/* What's been chosen */
SRTP_PROTECTION_PROFILE *srtp_profile;
/*-
* Is use of the Heartbeat extension negotiated?
* 0: disabled
* 1: enabled
* 2: enabled, but not allowed to send Requests
*/
unsigned int tlsext_heartbeat;
/* Indicates if a HeartbeatRequest is in flight */
unsigned int tlsext_hb_pending;
/* HeartbeatRequest sequence number */
unsigned int tlsext_hb_seq;
/*
* For a client, this contains the list of supported protocols in wire
* format.
*/
unsigned char *alpn_client_proto_list;
unsigned alpn_client_proto_list_len;
# else
# define session_ctx ctx
# endif /* OPENSSL_NO_TLSEXT */
/*-
* 1 if we are renegotiating.
* 2 if we are a server and are inside a handshake
* (i.e. not just sending a HelloRequest)
*/
int renegotiate;
# ifndef OPENSSL_NO_SRP
/* ctx for SRP authentication */
SRP_CTX srp_ctx;
# endif
/*
* Callback for disabling session caching and ticket support on a session
* basis, depending on the chosen cipher.
*/
int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
RECORD_LAYER rlayer;
};
typedef struct ssl3_state_st {
long flags;
int delay_buf_pop_ret;
int read_mac_secret_size;
unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
int write_mac_secret_size;
unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
unsigned char server_random[SSL3_RANDOM_SIZE];
unsigned char client_random[SSL3_RANDOM_SIZE];
/* flags for countermeasure against known-IV weakness */
int need_empty_fragments;
int empty_fragment_done;
/* The value of 'extra' when the buffers were initialized */
int init_extra;
/* used during startup, digest all incoming/outgoing packets */
BIO *handshake_buffer;
/*
* When set of handshake digests is determined, buffer is hashed and
* freed and MD_CTX-es for all required digests are stored in this array
*/
EVP_MD_CTX **handshake_dgst;
/*
* Set whenever an expected ChangeCipherSpec message is processed.
* Unset when the peer's Finished message is received.
* Unexpected ChangeCipherSpec messages trigger a fatal alert.
*/
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;
unsigned char send_alert[2];
/*
* This flag is set when we should renegotiate ASAP, basically when there
* is no more data in the read or write buffers
*/
int renegotiate;
int total_renegotiations;
int num_renegotiations;
int in_read_app_data;
struct {
/* actually only needs to be 16+20 */
unsigned char cert_verify_md[EVP_MAX_MD_SIZE * 2];
/* actually only need to be 16+20 for SSLv3 and 12 for TLS */
unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
int finish_md_len;
unsigned char 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;
# ifndef OPENSSL_NO_DH
DH *dh;
# endif
# ifndef OPENSSL_NO_EC
EC_KEY *ecdh; /* holds short lived ECDH key */
# endif
/* used when SSL_ST_FLUSH_DATA is entered */
int next_state;
int reuse_message;
/* used for certificate requests */
int cert_req;
int ctype_num;
char ctype[SSL3_CT_NUMBER];
STACK_OF(X509_NAME) *ca_names;
int use_rsa_tmp;
int key_block_length;
unsigned char *key_block;
const EVP_CIPHER *new_sym_enc;
const EVP_MD *new_hash;
int new_mac_pkey_type;
int new_mac_secret_size;
# ifndef OPENSSL_NO_COMP
const SSL_COMP *new_compression;
# else
char *new_compression;
# endif
int cert_request;
} tmp;
/* Connection binding to prevent renegotiation attacks */
unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
unsigned char previous_client_finished_len;
unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
unsigned char previous_server_finished_len;
int send_connection_binding; /* TODOEKR */
# ifndef OPENSSL_NO_NEXTPROTONEG
/*
* Set if we saw the Next Protocol Negotiation extension from our peer.
*/
int next_proto_neg_seen;
# endif
# ifndef OPENSSL_NO_TLSEXT
/*
* 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.
*/
unsigned char *alpn_selected;
unsigned alpn_selected_len;
# ifndef OPENSSL_NO_EC
/*
* This is set to true if we believe that this is a version of Safari
* running on OS X 10.6 or newer. We wish to know this because Safari on
* 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
*/
char is_probably_safari;
# endif /* !OPENSSL_NO_EC */
# endif /* !OPENSSL_NO_TLSEXT */
} SSL3_STATE;
/* DTLS structures */
# ifndef OPENSSL_NO_SCTP
# define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
# endif
/* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
# define DTLS1_MAX_MTU_OVERHEAD 48
struct dtls1_retransmit_state {
EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
EVP_MD_CTX *write_hash; /* used for mac generation */
COMP_CTX *compress; /* compression */
SSL_SESSION *session;
unsigned short epoch;
};
struct hm_header_st {
unsigned char type;
unsigned long msg_len;
unsigned short seq;
unsigned long frag_off;
unsigned long frag_len;
unsigned int is_ccs;
struct dtls1_retransmit_state saved_retransmit_state;
};
struct ccs_header_st {
unsigned char type;
unsigned short seq;
};
struct dtls1_timeout_st {
/* Number of read timeouts so far */
unsigned int read_timeouts;
/* Number of write timeouts so far */
unsigned int write_timeouts;
/* Number of alerts received so far */
unsigned int num_alerts;
};
typedef struct hm_fragment_st {
struct hm_header_st msg_header;
unsigned char *fragment;
unsigned char *reassembly;
} hm_fragment;
typedef struct dtls1_state_st {
unsigned int send_cookie;
unsigned char cookie[DTLS1_COOKIE_LENGTH];
unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH];
unsigned int cookie_len;
/* handshake message numbers */
unsigned short handshake_write_seq;
unsigned short next_handshake_write_seq;
unsigned short handshake_read_seq;
/* Buffered handshake messages */
pqueue buffered_messages;
/* Buffered (sent) handshake records */
pqueue sent_messages;
/* Is set when listening for new connections with dtls1_listen() */
unsigned int listen;
unsigned int link_mtu; /* max on-the-wire DTLS packet size */
unsigned int mtu; /* max DTLS packet size */
struct hm_header_st w_msg_hdr;
struct hm_header_st r_msg_hdr;
struct dtls1_timeout_st timeout;
/*
* Indicates when the last handshake msg or heartbeat sent will timeout
*/
struct timeval next_timeout;
/* Timeout duration */
unsigned short timeout_duration;
unsigned int retransmitting;
/*
* Set when the handshake is ready to process peer's ChangeCipherSpec message.
* Cleared after the message has been processed.
*/
unsigned int change_cipher_spec_ok;
# ifndef OPENSSL_NO_SCTP
/* used when SSL_ST_XX_FLUSH is entered */
int next_state;
int shutdown_received;
# endif
} DTLS1_STATE;
# ifndef OPENSSL_NO_EC
/*
* From ECC-TLS draft, used in encoding the curve type in ECParameters
*/
# define EXPLICIT_PRIME_CURVE_TYPE 1
# define EXPLICIT_CHAR2_CURVE_TYPE 2
# define NAMED_CURVE_TYPE 3
# endif /* OPENSSL_NO_EC */
typedef struct cert_pkey_st {
X509 *x509;
EVP_PKEY *privatekey;
/* Digest to use when signing */
const EVP_MD *digest;
/* Chain for this certificate */
STACK_OF(X509) *chain;
# ifndef OPENSSL_NO_TLSEXT
/*-
* serverinfo data for this certificate. The data is in TLS Extension
* wire format, specifically it's a series of records like:
* uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
* uint16_t length;
* uint8_t data[length];
*/
unsigned char *serverinfo;
size_t serverinfo_length;
# endif
/*
* Set if CERT_PKEY can be used with current SSL session: e.g.
* appropriate curve, signature algorithms etc. If zero it can't be used
* at all.
*/
int valid_flags;
} CERT_PKEY;
/* Retrieve Suite B flags */
# define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
/* Uses to check strict mode: suite B modes are always strict */
# define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
(SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
typedef struct {
unsigned short ext_type;
/*
* Per-connection flags relating to this extension type: not used if
* part of an SSL_CTX structure.
*/
unsigned short ext_flags;
custom_ext_add_cb add_cb;
custom_ext_free_cb free_cb;
void *add_arg;
custom_ext_parse_cb parse_cb;
void *parse_arg;
} custom_ext_method;
/* ext_flags values */
/*
* Indicates an extension has been received. Used to check for unsolicited or
* duplicate extensions.
*/
# define SSL_EXT_FLAG_RECEIVED 0x1
/*
* Indicates an extension has been sent: used to enable sending of
* corresponding ServerHello extension.
*/
# define SSL_EXT_FLAG_SENT 0x2
typedef struct {
custom_ext_method *meths;
size_t meths_count;
} custom_ext_methods;
typedef struct cert_st {
/* Current active set */
/*
* ALWAYS points to an element of the pkeys array
* Probably it would make more sense to store
* an index, not a pointer.
*/
CERT_PKEY *key;
/*
* For servers the following masks are for the key and auth algorithms
* that are supported by the certs below. For clients they are masks of
* *disabled* algorithms based on the current session.
*/
int valid;
unsigned long mask_k;
unsigned long mask_a;
unsigned long export_mask_k;
unsigned long export_mask_a;
/* Client only */
unsigned long mask_ssl;
# ifndef OPENSSL_NO_RSA
RSA *rsa_tmp;
RSA *(*rsa_tmp_cb) (SSL *ssl, int is_export, int keysize);
# endif
# ifndef OPENSSL_NO_DH
DH *dh_tmp;
DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
int dh_tmp_auto;
# endif
# ifndef OPENSSL_NO_EC
EC_KEY *ecdh_tmp;
/* Callback for generating ephemeral ECDH keys */
EC_KEY *(*ecdh_tmp_cb) (SSL *ssl, int is_export, int keysize);
/* Select ECDH parameters automatically */
int ecdh_tmp_auto;
# endif
/* Flags related to certificates */
unsigned int cert_flags;
CERT_PKEY pkeys[SSL_PKEY_NUM];
/*
* Certificate types (received or sent) in certificate request message.
* On receive this is only set if number of certificate types exceeds
* SSL3_CT_NUMBER.
*/
unsigned char *ctypes;
size_t ctype_num;
/* Temporary storage for premaster secret */
unsigned char *pms;
size_t pmslen;
/*
* signature algorithms peer reports: e.g. supported signature algorithms
* extension for server or as part of a certificate request for client.
*/
unsigned char *peer_sigalgs;
/* Size of above array */
size_t peer_sigalgslen;
/*
* suppported signature algorithms. When set on a client this is sent in
* the client hello as the supported signature algorithms extension. For
* servers it represents the signature algorithms we are willing to use.
*/
unsigned char *conf_sigalgs;
/* Size of above array */
size_t conf_sigalgslen;
/*
* Client authentication signature algorithms, if not set then uses
* conf_sigalgs. On servers these will be the signature algorithms sent
* to the client in a cerificate request for TLS 1.2. On a client this
* represents the signature algortithms we are willing to use for client
* authentication.
*/
unsigned char *client_sigalgs;
/* Size of above array */
size_t client_sigalgslen;
/*
* Signature algorithms shared by client and server: cached because these
* are used most often.
*/
TLS_SIGALGS *shared_sigalgs;
size_t shared_sigalgslen;
/*
* Certificate setup callback: if set is called whenever a certificate
* may be required (client or server). the callback can then examine any
* appropriate parameters and setup any certificates required. This
* allows advanced applications to select certificates on the fly: for
* example based on supported signature algorithms or curves.
*/
int (*cert_cb) (SSL *ssl, void *arg);
void *cert_cb_arg;
/*
* Optional X509_STORE for chain building or certificate validation If
* NULL the parent SSL_CTX store is used instead.
*/
X509_STORE *chain_store;
X509_STORE *verify_store;
/* Raw values of the cipher list from a client */
unsigned char *ciphers_raw;
size_t ciphers_rawlen;
/* Custom extension methods for server and client */
custom_ext_methods cli_ext;
custom_ext_methods srv_ext;
/* Security callback */
int (*sec_cb) (SSL *s, SSL_CTX *ctx, int op, int bits, int nid,
void *other, void *ex);
/* Security level */
int sec_level;
void *sec_ex;
int references; /* >1 only if SSL_copy_session_id is used */
} CERT;
typedef struct sess_cert_st {
STACK_OF(X509) *cert_chain; /* as received from peer */
/* The 'peer_...' members are used only by clients. */
int peer_cert_type;
CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never
* NULL!) */
CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
/*
* Obviously we don't have the private keys of these, so maybe we
* shouldn't even use the CERT_PKEY type here.
*/
# ifndef OPENSSL_NO_RSA
RSA *peer_rsa_tmp; /* not used for SSL 2 */
# endif
# ifndef OPENSSL_NO_DH
DH *peer_dh_tmp; /* not used for SSL 2 */
# endif
# ifndef OPENSSL_NO_EC
EC_KEY *peer_ecdh_tmp;
# endif
int references; /* actually always 1 at the moment */
} SESS_CERT;
/* Structure containing decoded values of signature algorithms extension */
struct tls_sigalgs_st {
/* NID of hash algorithm */
int hash_nid;
/* NID of signature algorithm */
int sign_nid;
/* Combined hash and signature NID */
int signandhash_nid;
/* Raw values used in extension */
unsigned char rsign;
unsigned char rhash;
};
/*
* #define MAC_DEBUG
*/
/*
* #define ERR_DEBUG
*/
/*
* #define ABORT_DEBUG
*/
/*
* #define PKT_DEBUG 1
*/
/*
* #define DES_DEBUG
*/
/*
* #define DES_OFB_DEBUG
*/
/*
* #define SSL_DEBUG
*/
/*
* #define RSA_DEBUG
*/
/*
* #define IDEA_DEBUG
*/
# define FP_ICC (int (*)(const void *,const void *))
# define ssl_put_cipher_by_char(ssl,ciph,ptr) \
((ssl)->method->put_cipher_by_char((ciph),(ptr)))
/*
* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
* of a mess of functions, but hell, think of it as an opaque structure :-)
*/
typedef struct ssl3_enc_method {
int (*enc) (SSL *, int);
int (*mac) (SSL *, unsigned char *, int);
int (*setup_key_block) (SSL *);
int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
int);
int (*change_cipher_state) (SSL *, int);
int (*final_finish_mac) (SSL *, const char *, int, unsigned char *);
int finish_mac_length;
int (*cert_verify_mac) (SSL *, int, unsigned char *);
const char *client_finished_label;
int client_finished_label_len;
const char *server_finished_label;
int server_finished_label_len;
int (*alert_value) (int);
int (*export_keying_material) (SSL *, unsigned char *, size_t,
const char *, size_t,
const unsigned char *, size_t,
int use_context);
/* Various flags indicating protocol version requirements */
unsigned int enc_flags;
/* Handshake header length */
unsigned int hhlen;
/* Set the handshake header */
int (*set_handshake_header) (SSL *s, int type, unsigned long len);
/* Write out handshake message */
int (*do_write) (SSL *s);
} SSL3_ENC_METHOD;
# define SSL_HM_HEADER_LENGTH(s) s->method->ssl3_enc->hhlen
# define ssl_handshake_start(s) \
(((unsigned char *)s->init_buf->data) + s->method->ssl3_enc->hhlen)
# define ssl_set_handshake_header(s, htype, len) \
s->method->ssl3_enc->set_handshake_header(s, htype, len)
# define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
/* Values for enc_flags */
/* Uses explicit IV for CBC mode */
# define SSL_ENC_FLAG_EXPLICIT_IV 0x1
/* Uses signature algorithms extension */
# define SSL_ENC_FLAG_SIGALGS 0x2
/* Uses SHA256 default PRF */
# define SSL_ENC_FLAG_SHA256_PRF 0x4
/* Is DTLS */
# define SSL_ENC_FLAG_DTLS 0x8
/*
* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
* apply to others in future.
*/
# define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
# ifndef OPENSSL_NO_COMP
/* Used for holding the relevant compression methods loaded into SSL_CTX */
typedef struct ssl3_comp_st {
int comp_id; /* The identifier byte for this compression
* type */
char *name; /* Text name used for the compression type */
COMP_METHOD *method; /* The method :-) */
} SSL3_COMP;
# endif
extern SSL3_ENC_METHOD ssl3_undef_enc_method;
OPENSSL_EXTERN const SSL_CIPHER ssl3_ciphers[];
SSL_METHOD *ssl_bad_method(int ver);
extern const SSL3_ENC_METHOD TLSv1_enc_data;
extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
extern const SSL3_ENC_METHOD SSLv3_enc_data;
extern const SSL3_ENC_METHOD DTLSv1_enc_data;
extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
# define IMPLEMENT_tls_meth_func(version, func_name, s_accept, s_connect, \
s_get_meth, enc_data) \
const SSL_METHOD *func_name(void) \
{ \
static const SSL_METHOD func_name##_data= { \
version, \
tls1_new, \
tls1_clear, \
tls1_free, \
s_accept, \
s_connect, \
ssl3_read, \
ssl3_peek, \
ssl3_write, \
ssl3_shutdown, \
ssl3_renegotiate, \
ssl3_renegotiate_check, \
ssl3_get_message, \
ssl3_read_bytes, \
ssl3_write_bytes, \
ssl3_dispatch_alert, \
ssl3_ctrl, \
ssl3_ctx_ctrl, \
ssl3_get_cipher_by_char, \
ssl3_put_cipher_by_char, \
ssl3_pending, \
ssl3_num_ciphers, \
ssl3_get_cipher, \
s_get_meth, \
tls1_default_timeout, \
&enc_data, \
ssl_undefined_void_function, \
ssl3_callback_ctrl, \
ssl3_ctx_callback_ctrl, \
}; \
return &func_name##_data; \
}
# define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
const SSL_METHOD *func_name(void) \
{ \
static const SSL_METHOD func_name##_data= { \
SSL3_VERSION, \
ssl3_new, \
ssl3_clear, \
ssl3_free, \
s_accept, \
s_connect, \
ssl3_read, \
ssl3_peek, \
ssl3_write, \
ssl3_shutdown, \
ssl3_renegotiate, \
ssl3_renegotiate_check, \
ssl3_get_message, \
ssl3_read_bytes, \
ssl3_write_bytes, \
ssl3_dispatch_alert, \
ssl3_ctrl, \
ssl3_ctx_ctrl, \
ssl3_get_cipher_by_char, \
ssl3_put_cipher_by_char, \
ssl3_pending, \
ssl3_num_ciphers, \
ssl3_get_cipher, \
s_get_meth, \
ssl3_default_timeout, \
&SSLv3_enc_data, \
ssl_undefined_void_function, \
ssl3_callback_ctrl, \
ssl3_ctx_callback_ctrl, \
}; \
return &func_name##_data; \
}
# define IMPLEMENT_ssl23_meth_func(func_name, s_accept, s_connect, s_get_meth) \
const SSL_METHOD *func_name(void) \
{ \
static const SSL_METHOD func_name##_data= { \
TLS1_2_VERSION, \
tls1_new, \
tls1_clear, \
tls1_free, \
s_accept, \
s_connect, \
ssl23_read, \
ssl23_peek, \
ssl23_write, \
ssl_undefined_function, \
ssl_undefined_function, \
ssl_ok, \
ssl3_get_message, \
ssl3_read_bytes, \
ssl3_write_bytes, \
ssl3_dispatch_alert, \
ssl3_ctrl, \
ssl3_ctx_ctrl, \
ssl23_get_cipher_by_char, \
ssl23_put_cipher_by_char, \
ssl_undefined_const_function, \
ssl23_num_ciphers, \
ssl23_get_cipher, \
s_get_meth, \
ssl23_default_timeout, \
&TLSv1_2_enc_data, \
ssl_undefined_void_function, \
ssl3_callback_ctrl, \
ssl3_ctx_callback_ctrl, \
}; \
return &func_name##_data; \
}
# define IMPLEMENT_dtls1_meth_func(version, func_name, s_accept, s_connect, \
s_get_meth, enc_data) \
const SSL_METHOD *func_name(void) \
{ \
static const SSL_METHOD func_name##_data= { \
version, \
dtls1_new, \
dtls1_clear, \
dtls1_free, \
s_accept, \
s_connect, \
ssl3_read, \
ssl3_peek, \
ssl3_write, \
dtls1_shutdown, \
ssl3_renegotiate, \
ssl3_renegotiate_check, \
dtls1_get_message, \
dtls1_read_bytes, \
dtls1_write_app_data_bytes, \
dtls1_dispatch_alert, \
dtls1_ctrl, \
ssl3_ctx_ctrl, \
ssl3_get_cipher_by_char, \
ssl3_put_cipher_by_char, \
ssl3_pending, \
ssl3_num_ciphers, \
dtls1_get_cipher, \
s_get_meth, \
dtls1_default_timeout, \
&enc_data, \
ssl_undefined_void_function, \
ssl3_callback_ctrl, \
ssl3_ctx_callback_ctrl, \
}; \
return &func_name##_data; \
}
struct openssl_ssl_test_functions {
int (*p_ssl_init_wbio_buffer) (SSL *s, int push);
int (*p_ssl3_setup_buffers) (SSL *s);
int (*p_tls1_process_heartbeat) (SSL *s,
unsigned char *p, unsigned int length);
int (*p_dtls1_process_heartbeat) (SSL *s,
unsigned char *p, unsigned int length);
};
# ifndef OPENSSL_UNIT_TEST
void ssl_clear_cipher_ctx(SSL *s);
int ssl_clear_bad_session(SSL *s);
__owur CERT *ssl_cert_new(void);
__owur CERT *ssl_cert_dup(CERT *cert);
void ssl_cert_set_default_md(CERT *cert);
void ssl_cert_clear_certs(CERT *c);
void ssl_cert_free(CERT *c);
__owur SESS_CERT *ssl_sess_cert_new(void);
void ssl_sess_cert_free(SESS_CERT *sc);
__owur int ssl_set_peer_cert_type(SESS_CERT *c, int type);
__owur int ssl_get_new_session(SSL *s, int session);
__owur int ssl_get_prev_session(SSL *s, unsigned char *session, int len,
const unsigned char *limit);
__owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
__owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
const SSL_CIPHER *const *bp);
__owur STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
int num,
STACK_OF(SSL_CIPHER) **skp,
int sslv2format);
__owur int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
unsigned char *p,
int (*put_cb) (const SSL_CIPHER *,
unsigned char *));
__owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
STACK_OF(SSL_CIPHER) **pref,
STACK_OF(SSL_CIPHER) **sorted,
const char *rule_str, CERT *c);
void ssl_update_cache(SSL *s, int mode);
__owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
const EVP_MD **md, int *mac_pkey_type,
int *mac_secret_size, SSL_COMP **comp, int use_etm);
__owur int ssl_get_handshake_digest(int i, long *mask, const EVP_MD **md);
__owur int ssl_cipher_get_cert_index(const SSL_CIPHER *c);
__owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr);
__owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
__owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
__owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
__owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
__owur int ssl_cert_select_current(CERT *c, X509 *x);
__owur int ssl_cert_set_current(CERT *c, long arg);
__owur X509 *ssl_cert_get0_next_certificate(CERT *c, int first);
void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg),
void *arg);
__owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
__owur int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l);
__owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags);
__owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref);
__owur int ssl_security(SSL *s, int op, int bits, int nid, void *other);
__owur int ssl_ctx_security(SSL_CTX *ctx, int op, int bits, int nid, void *other);
int ssl_undefined_function(SSL *s);
__owur int ssl_undefined_void_function(void);
__owur int ssl_undefined_const_function(const SSL *s);
__owur CERT_PKEY *ssl_get_server_send_pkey(const SSL *s);
# ifndef OPENSSL_NO_TLSEXT
__owur int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
size_t *serverinfo_length);
# endif
__owur EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd);
__owur int ssl_cert_type(X509 *x, EVP_PKEY *pkey);
void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher);
__owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
__owur int ssl_verify_alarm_type(long type);
void ssl_load_ciphers(void);
__owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, int len);
__owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
__owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
void ssl3_init_finished_mac(SSL *s);
__owur int ssl3_send_server_certificate(SSL *s);
__owur int ssl3_send_newsession_ticket(SSL *s);
__owur int ssl3_send_cert_status(SSL *s);
__owur int ssl3_get_finished(SSL *s, int state_a, int state_b);
__owur int ssl3_setup_key_block(SSL *s);
__owur int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b);
__owur int ssl3_change_cipher_state(SSL *s, int which);
void ssl3_cleanup_key_block(SSL *s);
__owur int ssl3_do_write(SSL *s, int type);
int ssl3_send_alert(SSL *s, int level, int desc);
__owur int ssl3_generate_master_secret(SSL *s, unsigned char *out,
unsigned char *p, int len);
__owur int ssl3_get_req_cert_type(SSL *s, unsigned char *p);
__owur long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
__owur int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen);
__owur int ssl3_num_ciphers(void);
__owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
int ssl3_renegotiate(SSL *ssl);
int ssl3_renegotiate_check(SSL *ssl);
__owur int ssl3_dispatch_alert(SSL *s);
__owur int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,
unsigned char *p);
__owur int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
void ssl3_free_digest_list(SSL *s);
__owur unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk);
__owur SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt,
STACK_OF(SSL_CIPHER) *srvr);
__owur int ssl3_digest_cached_records(SSL *s);
__owur int ssl3_new(SSL *s);
void ssl3_free(SSL *s);
__owur int ssl3_accept(SSL *s);
__owur int ssl3_connect(SSL *s);
__owur int ssl3_read(SSL *s, void *buf, int len);
__owur int ssl3_peek(SSL *s, void *buf, int len);
__owur int ssl3_write(SSL *s, const void *buf, int len);
__owur int ssl3_shutdown(SSL *s);
void ssl3_clear(SSL *s);
__owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
__owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
__owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
__owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
__owur int ssl3_do_change_cipher_spec(SSL *ssl);
__owur long ssl3_default_timeout(void);
__owur int ssl3_set_handshake_header(SSL *s, int htype, unsigned long len);
__owur int ssl3_handshake_write(SSL *s);
__owur int ssl23_num_ciphers(void);
__owur const SSL_CIPHER *ssl23_get_cipher(unsigned int u);
__owur int ssl23_read(SSL *s, void *buf, int len);
__owur int ssl23_peek(SSL *s, void *buf, int len);
__owur int ssl23_write(SSL *s, const void *buf, int len);
__owur int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
__owur const SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p);
__owur long ssl23_default_timeout(void);
__owur int ssl_allow_compression(SSL *s);
__owur long tls1_default_timeout(void);
__owur int dtls1_do_write(SSL *s, int type);
void dtls1_set_message_header(SSL *s,
unsigned char *p, unsigned char mt,
unsigned long len,
unsigned long frag_off,
unsigned long frag_len);
__owur int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
__owur int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
__owur int dtls1_read_failed(SSL *s, int code);
__owur int dtls1_buffer_message(SSL *s, int ccs);
__owur int dtls1_retransmit_message(SSL *s, unsigned short seq,
unsigned long frag_off, int *found);
__owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
int dtls1_retransmit_buffered_messages(SSL *s);
void dtls1_clear_record_buffer(SSL *s);
void dtls1_get_message_header(unsigned char *data,
struct hm_header_st *msg_hdr);
void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
__owur long dtls1_default_timeout(void);
__owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
__owur int dtls1_check_timeout_num(SSL *s);
__owur int dtls1_handle_timeout(SSL *s);
__owur const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
void dtls1_start_timer(SSL *s);
void dtls1_stop_timer(SSL *s);
__owur int dtls1_is_timer_expired(SSL *s);
void dtls1_double_timeout(SSL *s);
__owur int dtls1_send_newsession_ticket(SSL *s);
__owur unsigned int dtls1_min_mtu(SSL *s);
__owur unsigned int dtls1_link_min_mtu(void);
void dtls1_hm_fragment_free(hm_fragment *frag);
/* some client-only functions */
__owur int ssl3_client_hello(SSL *s);
__owur int ssl3_get_server_hello(SSL *s);
__owur int ssl3_get_certificate_request(SSL *s);
__owur int ssl3_get_new_session_ticket(SSL *s);
__owur int ssl3_get_cert_status(SSL *s);
__owur int ssl3_get_server_done(SSL *s);
__owur int ssl3_send_client_verify(SSL *s);
__owur int ssl3_send_client_certificate(SSL *s);
__owur int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
__owur int ssl3_send_client_key_exchange(SSL *s);
__owur int ssl3_get_key_exchange(SSL *s);
__owur int ssl3_get_server_certificate(SSL *s);
__owur int ssl3_check_cert_and_algorithm(SSL *s);
# ifndef OPENSSL_NO_TLSEXT
# ifndef OPENSSL_NO_NEXTPROTONEG
__owur int ssl3_send_next_proto(SSL *s);
# endif
# endif
int dtls1_client_hello(SSL *s);
/* some server-only functions */
__owur int ssl3_get_client_hello(SSL *s);
__owur int ssl3_send_server_hello(SSL *s);
__owur int ssl3_send_hello_request(SSL *s);
__owur int ssl3_send_server_key_exchange(SSL *s);
__owur int ssl3_send_certificate_request(SSL *s);
__owur int ssl3_send_server_done(SSL *s);
__owur int ssl3_get_client_certificate(SSL *s);
__owur int ssl3_get_client_key_exchange(SSL *s);
__owur int ssl3_get_cert_verify(SSL *s);
# ifndef OPENSSL_NO_NEXTPROTONEG
__owur int ssl3_get_next_proto(SSL *s);
# endif
__owur int ssl23_accept(SSL *s);
__owur int ssl23_connect(SSL *s);
__owur int tls1_new(SSL *s);
void tls1_free(SSL *s);
void tls1_clear(SSL *s);
long tls1_ctrl(SSL *s, int cmd, long larg, void *parg);
long tls1_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
__owur int dtls1_new(SSL *s);
__owur int dtls1_accept(SSL *s);
__owur int dtls1_connect(SSL *s);
void dtls1_free(SSL *s);
void dtls1_clear(SSL *s);
long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
__owur int dtls1_shutdown(SSL *s);
__owur long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
__owur int dtls1_dispatch_alert(SSL *s);
__owur int ssl_init_wbio_buffer(SSL *s, int push);
void ssl_free_wbio_buffer(SSL *s);
__owur int tls1_change_cipher_state(SSL *s, int which);
__owur int tls1_setup_key_block(SSL *s);
__owur int tls1_final_finish_mac(SSL *s,
const char *str, int slen, unsigned char *p);
__owur int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
__owur int tls1_generate_master_secret(SSL *s, unsigned char *out,
unsigned char *p, int len);
__owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
const char *label, size_t llen,
const unsigned char *p, size_t plen,
int use_context);
__owur int tls1_alert_code(int code);
__owur int ssl3_alert_code(int code);
__owur int ssl_ok(SSL *s);
# ifndef OPENSSL_NO_EC
__owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
# endif
SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
# ifndef OPENSSL_NO_EC
__owur int tls1_ec_curve_id2nid(int curve_id);
__owur int tls1_ec_nid2curve_id(int nid);
__owur int tls1_check_curve(SSL *s, const unsigned char *p, size_t len);
__owur int tls1_shared_curve(SSL *s, int nmatch);
__owur int tls1_set_curves(unsigned char **pext, size_t *pextlen,
int *curves, size_t ncurves);
__owur int tls1_set_curves_list(unsigned char **pext, size_t *pextlen,
const char *str);
__owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
# endif /* OPENSSL_NO_EC */
# ifndef OPENSSL_NO_TLSEXT
__owur int tls1_shared_list(SSL *s,
const unsigned char *l1, size_t l1len,
const unsigned char *l2, size_t l2len, int nmatch);
__owur unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *buf,
unsigned char *limit, int *al);
__owur unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *buf,
unsigned char *limit, int *al);
__owur int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **data,
unsigned char *d, int n);
__owur int tls1_set_server_sigalgs(SSL *s);
__owur int ssl_check_clienthello_tlsext_late(SSL *s);
__owur int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data,
unsigned char *d, int n);
__owur int ssl_prepare_clienthello_tlsext(SSL *s);
__owur int ssl_prepare_serverhello_tlsext(SSL *s);
# ifndef OPENSSL_NO_HEARTBEATS
__owur int tls1_heartbeat(SSL *s);
__owur int dtls1_heartbeat(SSL *s);
__owur int tls1_process_heartbeat(SSL *s, unsigned char *p, unsigned int length);
__owur int dtls1_process_heartbeat(SSL *s, unsigned char *p, unsigned int length);
# endif
__owur int tls1_process_ticket(SSL *s, unsigned char *session_id, int len,
const unsigned char *limit, SSL_SESSION **ret);
__owur int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
const EVP_MD *md);
__owur int tls12_get_sigid(const EVP_PKEY *pk);
__owur const EVP_MD *tls12_get_hash(unsigned char hash_alg);
void ssl_set_sig_mask(unsigned long *pmask_a, SSL *s, int op);
__owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
__owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, int client);
int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
int idx);
void tls1_set_cert_validity(SSL *s);
# endif
# ifndef OPENSSL_NO_DH
__owur DH *ssl_get_auto_dh(SSL *s);
# endif
__owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee);
__owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex, int vfy);
__owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
__owur int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
int maxlen);
__owur int ssl_parse_serverhello_renegotiate_ext(SSL *s, unsigned char *d, int len,
int *al);
__owur int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
int maxlen);
__owur int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len,
int *al);
__owur long ssl_get_algorithm2(SSL *s);
__owur size_t tls12_copy_sigalgs(SSL *s, unsigned char *out,
const unsigned char *psig, size_t psiglen);
__owur int tls1_save_sigalgs(SSL *s, const unsigned char *data, int dsize);
__owur int tls1_process_sigalgs(SSL *s);
__owur size_t tls12_get_psigalgs(SSL *s, const unsigned char **psigs);
__owur int tls12_check_peer_sigalg(const EVP_MD **pmd, SSL *s,
const unsigned char *sig, EVP_PKEY *pkey);
void ssl_set_client_disabled(SSL *s);
__owur int ssl_cipher_disabled(SSL *s, const SSL_CIPHER *c, int op);
__owur int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
int maxlen);
__owur int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len,
int *al);
__owur int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
int maxlen);
__owur int ssl_parse_serverhello_use_srtp_ext(SSL *s, unsigned char *d, int len,
int *al);
__owur int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen);
/* s3_cbc.c */
__owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
void ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
unsigned char *md_out,
size_t *md_out_size,
const unsigned char header[13],
const unsigned char *data,
size_t data_plus_mac_size,
size_t data_plus_mac_plus_padding_size,
const unsigned char *mac_secret,
unsigned mac_secret_length, char is_sslv3);
void tls_fips_digest_extra(const EVP_CIPHER_CTX *cipher_ctx,
EVP_MD_CTX *mac_ctx, const unsigned char *data,
size_t data_len, size_t orig_len);
__owur int srp_verify_server_param(SSL *s, int *al);
/* t1_ext.c */
void custom_ext_init(custom_ext_methods *meths);
__owur int custom_ext_parse(SSL *s, int server,
unsigned int ext_type,
const unsigned char *ext_data, size_t ext_size, int *al);
__owur int custom_ext_add(SSL *s, int server,
unsigned char **pret, unsigned char *limit, int *al);
__owur int custom_exts_copy(custom_ext_methods *dst, const custom_ext_methods *src);
void custom_exts_free(custom_ext_methods *exts);
# else
# define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
# define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
# define tls1_process_heartbeat SSL_test_functions()->p_tls1_process_heartbeat
# define dtls1_process_heartbeat SSL_test_functions()->p_dtls1_process_heartbeat
# endif
#endif
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