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ssl.h
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/* ssl/ssl.h */
/* Copyright (C) 1995-1998 Eric Young ([email protected])
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young ([email protected]).
* 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 ([email protected]).
*
* 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 ([email protected])"
* 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 ([email protected])"
*
* 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
*
* 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
* ([email protected]). This product includes software written by Tim
* Hudson ([email protected]).
*
*/
/* ====================================================================
* 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_H
#define HEADER_SSL_H
#include <openssl/e_os2.h>
#ifndef OPENSSL_NO_COMP
#include <openssl/comp.h>
#endif
#ifndef OPENSSL_NO_BIO
#include <openssl/bio.h>
#endif
#ifndef OPENSSL_NO_DEPRECATED
#ifndef OPENSSL_NO_X509
#include <openssl/x509.h>
#endif
#include <openssl/crypto.h>
#include <openssl/lhash.h>
#include <openssl/buffer.h>
#endif
#include <openssl/pem.h>
#include <openssl/hmac.h>
#include <openssl/kssl.h>
#include <openssl/safestack.h>
#include <openssl/symhacks.h>
#ifdef __cplusplus
extern "C" {
#endif
/* SSLeay version number for ASN.1 encoding of the session information */
/* Version 0 - initial version
* Version 1 - added the optional peer certificate
*/
#define SSL_SESSION_ASN1_VERSION 0x0001
/* text strings for the ciphers */
#define SSL_TXT_NULL_WITH_MD5 SSL2_TXT_NULL_WITH_MD5
#define SSL_TXT_RC4_128_WITH_MD5 SSL2_TXT_RC4_128_WITH_MD5
#define SSL_TXT_RC4_128_EXPORT40_WITH_MD5 SSL2_TXT_RC4_128_EXPORT40_WITH_MD5
#define SSL_TXT_RC2_128_CBC_WITH_MD5 SSL2_TXT_RC2_128_CBC_WITH_MD5
#define SSL_TXT_RC2_128_CBC_EXPORT40_WITH_MD5 SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5
#define SSL_TXT_IDEA_128_CBC_WITH_MD5 SSL2_TXT_IDEA_128_CBC_WITH_MD5
#define SSL_TXT_DES_64_CBC_WITH_MD5 SSL2_TXT_DES_64_CBC_WITH_MD5
#define SSL_TXT_DES_64_CBC_WITH_SHA SSL2_TXT_DES_64_CBC_WITH_SHA
#define SSL_TXT_DES_192_EDE3_CBC_WITH_MD5 SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5
#define SSL_TXT_DES_192_EDE3_CBC_WITH_SHA SSL2_TXT_DES_192_EDE3_CBC_WITH_SHA
/* VRS Additional Kerberos5 entries
*/
#define SSL_TXT_KRB5_DES_64_CBC_SHA SSL3_TXT_KRB5_DES_64_CBC_SHA
#define SSL_TXT_KRB5_DES_192_CBC3_SHA SSL3_TXT_KRB5_DES_192_CBC3_SHA
#define SSL_TXT_KRB5_RC4_128_SHA SSL3_TXT_KRB5_RC4_128_SHA
#define SSL_TXT_KRB5_IDEA_128_CBC_SHA SSL3_TXT_KRB5_IDEA_128_CBC_SHA
#define SSL_TXT_KRB5_DES_64_CBC_MD5 SSL3_TXT_KRB5_DES_64_CBC_MD5
#define SSL_TXT_KRB5_DES_192_CBC3_MD5 SSL3_TXT_KRB5_DES_192_CBC3_MD5
#define SSL_TXT_KRB5_RC4_128_MD5 SSL3_TXT_KRB5_RC4_128_MD5
#define SSL_TXT_KRB5_IDEA_128_CBC_MD5 SSL3_TXT_KRB5_IDEA_128_CBC_MD5
#define SSL_TXT_KRB5_DES_40_CBC_SHA SSL3_TXT_KRB5_DES_40_CBC_SHA
#define SSL_TXT_KRB5_RC2_40_CBC_SHA SSL3_TXT_KRB5_RC2_40_CBC_SHA
#define SSL_TXT_KRB5_RC4_40_SHA SSL3_TXT_KRB5_RC4_40_SHA
#define SSL_TXT_KRB5_DES_40_CBC_MD5 SSL3_TXT_KRB5_DES_40_CBC_MD5
#define SSL_TXT_KRB5_RC2_40_CBC_MD5 SSL3_TXT_KRB5_RC2_40_CBC_MD5
#define SSL_TXT_KRB5_RC4_40_MD5 SSL3_TXT_KRB5_RC4_40_MD5
#define SSL_TXT_KRB5_DES_40_CBC_SHA SSL3_TXT_KRB5_DES_40_CBC_SHA
#define SSL_TXT_KRB5_DES_40_CBC_MD5 SSL3_TXT_KRB5_DES_40_CBC_MD5
#define SSL_TXT_KRB5_DES_64_CBC_SHA SSL3_TXT_KRB5_DES_64_CBC_SHA
#define SSL_TXT_KRB5_DES_64_CBC_MD5 SSL3_TXT_KRB5_DES_64_CBC_MD5
#define SSL_TXT_KRB5_DES_192_CBC3_SHA SSL3_TXT_KRB5_DES_192_CBC3_SHA
#define SSL_TXT_KRB5_DES_192_CBC3_MD5 SSL3_TXT_KRB5_DES_192_CBC3_MD5
#define SSL_MAX_KRB5_PRINCIPAL_LENGTH 256
#define SSL_MAX_SSL_SESSION_ID_LENGTH 32
#define SSL_MAX_SID_CTX_LENGTH 32
#define SSL_MIN_RSA_MODULUS_LENGTH_IN_BYTES (512/8)
#define SSL_MAX_KEY_ARG_LENGTH 8
#define SSL_MAX_MASTER_KEY_LENGTH 48
/* These are used to specify which ciphers to use and not to use */
#define SSL_TXT_EXP40 "EXPORT40"
#define SSL_TXT_EXP56 "EXPORT56"
#define SSL_TXT_LOW "LOW"
#define SSL_TXT_MEDIUM "MEDIUM"
#define SSL_TXT_HIGH "HIGH"
#define SSL_TXT_FIPS "FIPS"
#define SSL_TXT_kFZA "kFZA" /* unused! */
#define SSL_TXT_aFZA "aFZA" /* unused! */
#define SSL_TXT_eFZA "eFZA" /* unused! */
#define SSL_TXT_FZA "FZA" /* unused! */
#define SSL_TXT_aNULL "aNULL"
#define SSL_TXT_eNULL "eNULL"
#define SSL_TXT_NULL "NULL"
#define SSL_TXT_kRSA "kRSA"
#define SSL_TXT_kDHr "kDHr"
#define SSL_TXT_kDHd "kDHd"
#define SSL_TXT_kDH "kDH"
#define SSL_TXT_kEDH "kEDH"
#define SSL_TXT_kKRB5 "kKRB5"
#define SSL_TXT_kECDHr "kECDHr"
#define SSL_TXT_kECDHe "kECDHe"
#define SSL_TXT_kECDH "kECDH"
#define SSL_TXT_kEECDH "kEECDH"
#define SSL_TXT_kPSK "kPSK"
#define SSL_TXT_kGOST "kGOST"
#define SSL_TXT_kSRP "kSRP"
#define SSL_TXT_aRSA "aRSA"
#define SSL_TXT_aDSS "aDSS"
#define SSL_TXT_aDH "aDH"
#define SSL_TXT_aECDH "aECDH"
#define SSL_TXT_aKRB5 "aKRB5"
#define SSL_TXT_aECDSA "aECDSA"
#define SSL_TXT_aPSK "aPSK"
#define SSL_TXT_aGOST94 "aGOST94"
#define SSL_TXT_aGOST01 "aGOST01"
#define SSL_TXT_aGOST "aGOST"
#define SSL_TXT_DSS "DSS"
#define SSL_TXT_DH "DH"
#define SSL_TXT_EDH "EDH" /* same as "kEDH:-ADH" */
#define SSL_TXT_ADH "ADH"
#define SSL_TXT_RSA "RSA"
#define SSL_TXT_ECDH "ECDH"
#define SSL_TXT_EECDH "EECDH" /* same as "kEECDH:-AECDH" */
#define SSL_TXT_AECDH "AECDH"
#define SSL_TXT_ECDSA "ECDSA"
#define SSL_TXT_KRB5 "KRB5"
#define SSL_TXT_PSK "PSK"
#define SSL_TXT_SRP "SRP"
#define SSL_TXT_DES "DES"
#define SSL_TXT_3DES "3DES"
#define SSL_TXT_RC4 "RC4"
#define SSL_TXT_RC2 "RC2"
#define SSL_TXT_IDEA "IDEA"
#define SSL_TXT_SEED "SEED"
#define SSL_TXT_AES128 "AES128"
#define SSL_TXT_AES256 "AES256"
#define SSL_TXT_AES "AES"
#define SSL_TXT_AES_GCM "AESGCM"
#define SSL_TXT_CAMELLIA128 "CAMELLIA128"
#define SSL_TXT_CAMELLIA256 "CAMELLIA256"
#define SSL_TXT_CAMELLIA "CAMELLIA"
#define SSL_TXT_MD5 "MD5"
#define SSL_TXT_SHA1 "SHA1"
#define SSL_TXT_SHA "SHA" /* same as "SHA1" */
#define SSL_TXT_GOST94 "GOST94"
#define SSL_TXT_GOST89MAC "GOST89MAC"
#define SSL_TXT_SHA256 "SHA256"
#define SSL_TXT_SHA384 "SHA384"
#define SSL_TXT_SSLV2 "SSLv2"
#define SSL_TXT_SSLV3 "SSLv3"
#define SSL_TXT_TLSV1 "TLSv1"
#define SSL_TXT_TLSV1_1 "TLSv1.1"
#define SSL_TXT_TLSV1_2 "TLSv1.2"
#define SSL_TXT_EXP "EXP"
#define SSL_TXT_EXPORT "EXPORT"
#define SSL_TXT_ALL "ALL"
/*
* COMPLEMENTOF* definitions. These identifiers are used to (de-select)
* ciphers normally not being used.
* Example: "RC4" will activate all ciphers using RC4 including ciphers
* without authentication, which would normally disabled by DEFAULT (due
* the "!ADH" being part of default). Therefore "RC4:!COMPLEMENTOFDEFAULT"
* will make sure that it is also disabled in the specific selection.
* COMPLEMENTOF* identifiers are portable between version, as adjustments
* to the default cipher setup will also be included here.
*
* COMPLEMENTOFDEFAULT does not experience the same special treatment that
* DEFAULT gets, as only selection is being done and no sorting as needed
* for DEFAULT.
*/
#define SSL_TXT_CMPALL "COMPLEMENTOFALL"
#define SSL_TXT_CMPDEF "COMPLEMENTOFDEFAULT"
/* The following cipher list is used by default.
* It also is substituted when an application-defined cipher list string
* starts with 'DEFAULT'. */
#define SSL_DEFAULT_CIPHER_LIST "ALL:!aNULL:!eNULL:!SSLv2"
/* As of OpenSSL 1.0.0, ssl_create_cipher_list() in ssl/ssl_ciph.c always
* starts with a reasonable order, and all we have to do for DEFAULT is
* throwing out anonymous and unencrypted ciphersuites!
* (The latter are not actually enabled by ALL, but "ALL:RSA" would enable
* some of them.)
*/
/* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
#define SSL_SENT_SHUTDOWN 1
#define SSL_RECEIVED_SHUTDOWN 2
#ifdef __cplusplus
}
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if (defined(OPENSSL_NO_RSA) || defined(OPENSSL_NO_MD5)) && !defined(OPENSSL_NO_SSL2)
#define OPENSSL_NO_SSL2
#endif
#define SSL_FILETYPE_ASN1 X509_FILETYPE_ASN1
#define SSL_FILETYPE_PEM X509_FILETYPE_PEM
/* This is needed to stop compilers complaining about the
* 'struct ssl_st *' function parameters used to prototype callbacks
* in SSL_CTX. */
typedef struct ssl_st *ssl_crock_st;
typedef struct tls_session_ticket_ext_st TLS_SESSION_TICKET_EXT;
typedef struct ssl_method_st SSL_METHOD;
typedef struct ssl_cipher_st SSL_CIPHER;
typedef struct ssl_session_st SSL_SESSION;
typedef struct tls_sigalgs_st TLS_SIGALGS;
typedef struct ssl_conf_ctx_st SSL_CONF_CTX;
DECLARE_STACK_OF(SSL_CIPHER)
/* SRTP protection profiles for use with the use_srtp extension (RFC 5764)*/
typedef struct srtp_protection_profile_st
{
const char *name;
unsigned long id;
} SRTP_PROTECTION_PROFILE;
DECLARE_STACK_OF(SRTP_PROTECTION_PROFILE)
typedef int (*tls_session_ticket_ext_cb_fn)(SSL *s, const unsigned char *data, int len, void *arg);
typedef int (*tls_session_secret_cb_fn)(SSL *s, void *secret, int *secret_len, STACK_OF(SSL_CIPHER) *peer_ciphers, SSL_CIPHER **cipher, void *arg);
#ifndef OPENSSL_NO_TLSEXT
/* Callbacks and structures for handling custom TLS Extensions:
* cli_ext_first_cb - sends data for ClientHello TLS Extension
* cli_ext_second_cb - receives data from ServerHello TLS Extension
* srv_ext_first_cb - receives data from ClientHello TLS Extension
* srv_ext_second_cb - sends data for ServerHello TLS Extension
*
* All these functions return nonzero on success. Zero will terminate
* the handshake (and return a specific TLS Fatal alert, if the function
* declaration has an "al" parameter).
*
* "ext_type" is a TLS "ExtensionType" from 0-65535.
* "in" is a pointer to TLS "extension_data" being provided to the cb.
* "out" is used by the callback to return a pointer to "extension data"
* which OpenSSL will later copy into the TLS handshake. The contents
* of this buffer should not be changed until the handshake is complete.
* "inlen" and "outlen" are TLS Extension lengths from 0-65535.
* "al" is a TLS "AlertDescription" from 0-255 which WILL be sent as a
* fatal TLS alert, if the callback returns zero.
*/
typedef int (*custom_cli_ext_first_cb_fn)(SSL *s, unsigned short ext_type,
const unsigned char **out,
unsigned short *outlen, void *arg);
typedef int (*custom_cli_ext_second_cb_fn)(SSL *s, unsigned short ext_type,
const unsigned char *in,
unsigned short inlen, int *al,
void *arg);
typedef int (*custom_srv_ext_first_cb_fn)(SSL *s, unsigned short ext_type,
const unsigned char *in,
unsigned short inlen, int *al,
void *arg);
typedef int (*custom_srv_ext_second_cb_fn)(SSL *s, unsigned short ext_type,
const unsigned char **out,
unsigned short *outlen, void *arg);
typedef struct {
unsigned short ext_type;
custom_cli_ext_first_cb_fn fn1;
custom_cli_ext_second_cb_fn fn2;
void *arg;
} custom_cli_ext_record;
typedef struct {
unsigned short ext_type;
custom_srv_ext_first_cb_fn fn1;
custom_srv_ext_second_cb_fn fn2;
void *arg;
} custom_srv_ext_record;
#endif
#ifndef OPENSSL_NO_SSL_INTERN
/* 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);
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
* KRB5_principal OCTET STRING -- optional Kerberos principal
* 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
* }
* 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? */
/* only really used in SSLv2 */
unsigned int key_arg_length;
unsigned char key_arg[SSL_MAX_KEY_ARG_LENGTH];
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_KRB5
unsigned int krb5_client_princ_len;
unsigned char krb5_client_princ[SSL_MAX_KRB5_PRINCIPAL_LENGTH];
#endif /* OPENSSL_NO_KRB5 */
#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 */
long tlsext_tick_lifetime_hint; /* Session lifetime hint in seconds */
#endif
#ifndef OPENSSL_NO_SRP
char *srp_username;
#endif
#ifndef OPENSSL_NO_TLSEXT
/* Used by client: the proof for this session.
* We store it outside the sess_cert structure, since the proof
* is received before the certificate. */
unsigned char *audit_proof;
size_t audit_proof_length;
#endif
};
#endif
#define SSL_OP_MICROSOFT_SESS_ID_BUG 0x00000001L
#define SSL_OP_NETSCAPE_CHALLENGE_BUG 0x00000002L
/* Allow initial connection to servers that don't support RI */
#define SSL_OP_LEGACY_SERVER_CONNECT 0x00000004L
#define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG 0x00000008L
#define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG 0x00000010L
#define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER 0x00000020L
#define SSL_OP_MSIE_SSLV2_RSA_PADDING 0x00000040L /* no effect since 0.9.7h and 0.9.8b */
#define SSL_OP_SSLEAY_080_CLIENT_DH_BUG 0x00000080L
#define SSL_OP_TLS_D5_BUG 0x00000100L
#define SSL_OP_TLS_BLOCK_PADDING_BUG 0x00000200L
/* Disable SSL 3.0/TLS 1.0 CBC vulnerability workaround that was added
* in OpenSSL 0.9.6d. Usually (depending on the application protocol)
* the workaround is not needed. Unfortunately some broken SSL/TLS
* implementations cannot handle it at all, which is why we include
* it in SSL_OP_ALL. */
#define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS 0x00000800L /* added in 0.9.6e */
/* SSL_OP_ALL: various bug workarounds that should be rather harmless.
* This used to be 0x000FFFFFL before 0.9.7. */
#define SSL_OP_ALL 0x80000BFFL
/* DTLS options */
#define SSL_OP_NO_QUERY_MTU 0x00001000L
/* Turn on Cookie Exchange (on relevant for servers) */
#define SSL_OP_COOKIE_EXCHANGE 0x00002000L
/* Don't use RFC4507 ticket extension */
#define SSL_OP_NO_TICKET 0x00004000L
/* Use Cisco's "speshul" version of DTLS_BAD_VER (as client) */
#define SSL_OP_CISCO_ANYCONNECT 0x00008000L
/* As server, disallow session resumption on renegotiation */
#define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION 0x00010000L
/* Don't use compression even if supported */
#define SSL_OP_NO_COMPRESSION 0x00020000L
/* Permit unsafe legacy renegotiation */
#define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 0x00040000L
/* If set, always create a new key when using tmp_ecdh parameters */
#define SSL_OP_SINGLE_ECDH_USE 0x00080000L
/* If set, always create a new key when using tmp_dh parameters */
#define SSL_OP_SINGLE_DH_USE 0x00100000L
/* Set to always use the tmp_rsa key when doing RSA operations,
* even when this violates protocol specs */
#define SSL_OP_EPHEMERAL_RSA 0x00200000L
/* Set on servers to choose the cipher according to the server's
* preferences */
#define SSL_OP_CIPHER_SERVER_PREFERENCE 0x00400000L
/* If set, a server will allow a client to issue a SSLv3.0 version number
* as latest version supported in the premaster secret, even when TLSv1.0
* (version 3.1) was announced in the client hello. Normally this is
* forbidden to prevent version rollback attacks. */
#define SSL_OP_TLS_ROLLBACK_BUG 0x00800000L
#define SSL_OP_NO_SSLv2 0x01000000L
#define SSL_OP_NO_SSLv3 0x02000000L
#define SSL_OP_NO_TLSv1 0x04000000L
#define SSL_OP_NO_TLSv1_2 0x08000000L
#define SSL_OP_NO_TLSv1_1 0x10000000L
#define SSL_OP_NO_DTLSv1 0x04000000L
#define SSL_OP_NO_DTLSv1_2 0x08000000L
#define SSL_OP_NO_SSL_MASK (SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|\
SSL_OP_NO_TLSv1|SSL_OP_NO_TLSv1_1|SSL_OP_NO_TLSv1_2)
/* These next two were never actually used for anything since SSLeay
* zap so we have some more flags.
*/
/* The next flag deliberately changes the ciphertest, this is a check
* for the PKCS#1 attack */
#define SSL_OP_PKCS1_CHECK_1 0x0
#define SSL_OP_PKCS1_CHECK_2 0x0
#define SSL_OP_NETSCAPE_CA_DN_BUG 0x20000000L
#define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG 0x40000000L
/* Make server add server-hello extension from early version of
* cryptopro draft, when GOST ciphersuite is negotiated.
* Required for interoperability with CryptoPro CSP 3.x
*/
#define SSL_OP_CRYPTOPRO_TLSEXT_BUG 0x80000000L
/* Allow SSL_write(..., n) to return r with 0 < r < n (i.e. report success
* when just a single record has been written): */
#define SSL_MODE_ENABLE_PARTIAL_WRITE 0x00000001L
/* Make it possible to retry SSL_write() with changed buffer location
* (buffer contents must stay the same!); this is not the default to avoid
* the misconception that non-blocking SSL_write() behaves like
* non-blocking write(): */
#define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002L
/* Never bother the application with retries if the transport
* is blocking: */
#define SSL_MODE_AUTO_RETRY 0x00000004L
/* Don't attempt to automatically build certificate chain */
#define SSL_MODE_NO_AUTO_CHAIN 0x00000008L
/* Save RAM by releasing read and write buffers when they're empty. (SSL3 and
* TLS only.) "Released" buffers are put onto a free-list in the context
* or just freed (depending on the context's setting for freelist_max_len). */
#define SSL_MODE_RELEASE_BUFFERS 0x00000010L
/* Cert related flags */
/* Many implementations ignore some aspects of the TLS standards such as
* enforcing certifcate chain algorithms. When this is set we enforce them.
*/
#define SSL_CERT_FLAG_TLS_STRICT 0x00000001L
/* Suite B modes, takes same values as certificate verify flags */
#define SSL_CERT_FLAG_SUITEB_128_LOS_ONLY 0x10000
/* Suite B 192 bit only mode */
#define SSL_CERT_FLAG_SUITEB_192_LOS 0x20000
/* Suite B 128 bit mode allowing 192 bit algorithms */
#define SSL_CERT_FLAG_SUITEB_128_LOS 0x30000
/* Perform all sorts of protocol violations for testing purposes */
#define SSL_CERT_FLAG_BROKEN_PROTOCOL 0x10000000
/* Flags for building certificate chains */
/* Treat any existing certificates as untrusted CAs */
#define SSL_BUILD_CHAIN_FLAG_UNTRUSTED 0x1
/* Don't include root CA in chain */
#define SSL_BUILD_CHAIN_FLAG_NO_ROOT 0x2
/* Flags returned by SSL_check_chain */
/* Certificate can be used with this session */
#define CERT_PKEY_VALID 0x1
/* Certificate can also be used for signing */
#define CERT_PKEY_SIGN 0x2
/* EE certificate signing algorithm OK */
#define CERT_PKEY_EE_SIGNATURE 0x10
/* CA signature algorithms OK */
#define CERT_PKEY_CA_SIGNATURE 0x20
/* EE certificate parameters OK */
#define CERT_PKEY_EE_PARAM 0x40
/* CA certificate parameters OK */
#define CERT_PKEY_CA_PARAM 0x80
/* Signing explicitly allowed as opposed to SHA1 fallback */
#define CERT_PKEY_EXPLICIT_SIGN 0x100
/* Client CA issuer names match (always set for server cert) */
#define CERT_PKEY_ISSUER_NAME 0x200
/* Cert type matches client types (always set for server cert) */
#define CERT_PKEY_CERT_TYPE 0x400
/* Cert chain suitable to Suite B */
#define CERT_PKEY_SUITEB 0x800
#define SSL_CONF_FLAG_CMDLINE 0x1
#define SSL_CONF_FLAG_FILE 0x2
#define SSL_CONF_FLAG_CLIENT 0x4
#define SSL_CONF_FLAG_SERVER 0x8
#define SSL_CONF_FLAG_SHOW_ERRORS 0x10
/* Note: SSL[_CTX]_set_{options,mode} use |= op on the previous value,
* they cannot be used to clear bits. */
#define SSL_CTX_set_options(ctx,op) \
SSL_CTX_ctrl((ctx),SSL_CTRL_OPTIONS,(op),NULL)
#define SSL_CTX_clear_options(ctx,op) \
SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_OPTIONS,(op),NULL)
#define SSL_CTX_get_options(ctx) \
SSL_CTX_ctrl((ctx),SSL_CTRL_OPTIONS,0,NULL)
#define SSL_set_options(ssl,op) \
SSL_ctrl((ssl),SSL_CTRL_OPTIONS,(op),NULL)
#define SSL_clear_options(ssl,op) \
SSL_ctrl((ssl),SSL_CTRL_CLEAR_OPTIONS,(op),NULL)
#define SSL_get_options(ssl) \
SSL_ctrl((ssl),SSL_CTRL_OPTIONS,0,NULL)
#define SSL_CTX_set_mode(ctx,op) \
SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,(op),NULL)
#define SSL_CTX_clear_mode(ctx,op) \
SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_MODE,(op),NULL)
#define SSL_CTX_get_mode(ctx) \
SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,0,NULL)
#define SSL_clear_mode(ssl,op) \
SSL_ctrl((ssl),SSL_CTRL_CLEAR_MODE,(op),NULL)
#define SSL_set_mode(ssl,op) \
SSL_ctrl((ssl),SSL_CTRL_MODE,(op),NULL)
#define SSL_get_mode(ssl) \
SSL_ctrl((ssl),SSL_CTRL_MODE,0,NULL)
#define SSL_set_mtu(ssl, mtu) \
SSL_ctrl((ssl),SSL_CTRL_SET_MTU,(mtu),NULL)
#define SSL_get_secure_renegotiation_support(ssl) \
SSL_ctrl((ssl), SSL_CTRL_GET_RI_SUPPORT, 0, NULL)
#ifndef OPENSSL_NO_HEARTBEATS
#define SSL_heartbeat(ssl) \
SSL_ctrl((ssl),SSL_CTRL_TLS_EXT_SEND_HEARTBEAT,0,NULL)
#endif
#define SSL_CTX_set_cert_flags(ctx,op) \
SSL_CTX_ctrl((ctx),SSL_CTRL_CERT_FLAGS,(op),NULL)
#define SSL_set_cert_flags(s,op) \
SSL_ctrl((s),SSL_CTRL_CERT_FLAGS,(op),NULL)
#define SSL_CTX_clear_cert_flags(ctx,op) \
SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
#define SSL_clear_cert_flags(s,op) \
SSL_ctrl((s),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
void SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg));
void SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg));
#define SSL_CTX_set_msg_callback_arg(ctx, arg) SSL_CTX_ctrl((ctx), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
#define SSL_set_msg_callback_arg(ssl, arg) SSL_ctrl((ssl), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
#ifndef OPENSSL_NO_SRP
#ifndef OPENSSL_NO_SSL_INTERN
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
/* see tls_srp.c */
int SSL_SRP_CTX_init(SSL *s);
int SSL_CTX_SRP_CTX_init(SSL_CTX *ctx);
int SSL_SRP_CTX_free(SSL *ctx);
int SSL_CTX_SRP_CTX_free(SSL_CTX *ctx);
int SSL_srp_server_param_with_username(SSL *s, int *ad);
int SRP_generate_server_master_secret(SSL *s,unsigned char *master_key);
int SRP_Calc_A_param(SSL *s);
int SRP_generate_client_master_secret(SSL *s,unsigned char *master_key);
#endif
#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32)
#define SSL_MAX_CERT_LIST_DEFAULT 1024*30 /* 30k max cert list :-) */
#else
#define SSL_MAX_CERT_LIST_DEFAULT 1024*100 /* 100k max cert list :-) */
#endif
#define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT (1024*20)
/* This callback type is used inside SSL_CTX, SSL, and in the functions that set
* them. It is used to override the generation of SSL/TLS session IDs in a
* server. Return value should be zero on an error, non-zero to proceed. Also,
* callbacks should themselves check if the id they generate is unique otherwise
* the SSL handshake will fail with an error - callbacks can do this using the
* 'ssl' value they're passed by;
* SSL_has_matching_session_id(ssl, id, *id_len)
* The length value passed in is set at the maximum size the session ID can be.
* In SSLv2 this is 16 bytes, whereas SSLv3/TLSv1 it is 32 bytes. The callback
* can alter this length to be less if desired, but under SSLv2 session IDs are
* supposed to be fixed at 16 bytes so the id will be padded after the callback
* returns in this case. It is also an error for the callback to set the size to
* zero. */
typedef int (*GEN_SESSION_CB)(const SSL *ssl, unsigned char *id,
unsigned int *id_len);
typedef struct ssl_comp_st SSL_COMP;
#ifndef OPENSSL_NO_SSL_INTERN
struct ssl_comp_st
{
int id;
const char *name;
#ifndef OPENSSL_NO_COMP
COMP_METHOD *method;
#else
char *method;
#endif
};
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 *rsa_md5;/* For SSLv2 - name is 'ssl2-md5' */
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 */
void (*info_callback)(const SSL *ssl,int type,int val); /* used if SSL's info_callback is NULL */
/* 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;