[openssl.git] / ssl / ssl.h

/* ssl/ssl.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_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).  -1 for the "sending" functions
 *   will cause the TLS Extension to be omitted.
 * 
 *   "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;

/* Callbacks and structures for handling Supplemental Data:
 *   srv_supp_data_first_cb_fn  - server sends Supplemental Data
 *   srv_supp_data_second_cb_fn - server receives Supplemental Data
 *   cli_supp_data_first_cb_fn  - client receives Supplemental Data
 *   cli_supp_data_second_cb_fn - client sends Supplemental Data
 *
 *   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).  -1 for the "sending" functions
 *   will result in no supplemental data entry being added to the
 *   supplemental data message for the provided supplemental data type.
 *
 *   "supp_data_type" is a Supplemental Data Type from 0-65535.
 *   "in" is a pointer to TLS "supplemental_data_entry" being provided to the cb.
 *   "out" is used by the callback to return a pointer to "supplemental 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 Supplemental Data 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 (*srv_supp_data_first_cb_fn)(SSL *s, unsigned short supp_data_type,
             const unsigned char **out,
             unsigned short *outlen, void *arg);
typedef int (*srv_supp_data_second_cb_fn)(SSL *s, unsigned short supp_data_type,
             const unsigned char *in,
             unsigned short inlen, int *al,
             void *arg);

typedef int (*cli_supp_data_first_cb_fn)(SSL *s, unsigned short supp_data_type,
             const unsigned char *in,
             unsigned short inlen, int *al,
             void *arg);
typedef int (*cli_supp_data_second_cb_fn)(SSL *s, unsigned short supp_data_type,
             const unsigned char **out,
             unsigned short *outlen, void *arg);

typedef struct {
        unsigned short supp_data_type;
        srv_supp_data_first_cb_fn fn1;
        srv_supp_data_second_cb_fn fn2;
        void *arg;
} srv_supp_data_record;

typedef struct {
        unsigned short supp_data_type;
        cli_supp_data_first_cb_fn fn1;
        cli_supp_data_second_cb_fn fn2;
        void *arg;
} cli_supp_data_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
        };

#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_SAFARI_ECDHE_ECDSA_BUG                   0x00000040L
#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;
        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];
        int (*default_verify_callback)(int ok,X509_STORE_CTX *ctx); /* called 'verify_callback' in the SSL */

        /* Default generate session ID callback. */
        GEN_SESSION_CB generate_session_id;

        X509_VERIFY_PARAM *param;

#if 0
        int purpose;            /* Purpose setting */
        int trust;              /* Trust setting */
#endif

        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_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;

        /* draft-rescorla-tls-opaque-prf-input-00.txt information */
        int (*tlsext_opaque_prf_input_callback)(SSL *, void *peerinput, size_t len, void *arg);
        void *tlsext_opaque_prf_input_callback_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_BUF_FREELISTS
#define SSL_MAX_BUF_FREELIST_LEN_DEFAULT 32
        unsigned int freelist_max_len;
        struct ssl3_buf_freelist_st *wbuf_freelist;
        struct ssl3_buf_freelist_st *rbuf_freelist;
#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 */
        /* Arrays containing the callbacks for custom TLS Extensions. */
        custom_cli_ext_record *custom_cli_ext_records;
        size_t custom_cli_ext_records_count;
        custom_srv_ext_record *custom_srv_ext_records;
        size_t custom_srv_ext_records_count;

        /* Arrays containing the callbacks for Supplemental Data. */
        cli_supp_data_record *cli_supp_data_records;
        size_t cli_supp_data_records_count;
        srv_supp_data_record *srv_supp_data_records;
        size_t srv_supp_data_records_count;
        };

#endif

#define SSL_SESS_CACHE_OFF                      0x0000
#define SSL_SESS_CACHE_CLIENT                   0x0001
#define SSL_SESS_CACHE_SERVER                   0x0002
#define SSL_SESS_CACHE_BOTH     (SSL_SESS_CACHE_CLIENT|SSL_SESS_CACHE_SERVER)
#define SSL_SESS_CACHE_NO_AUTO_CLEAR            0x0080
/* enough comments already ... see SSL_CTX_set_session_cache_mode(3) */
#define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP       0x0100
#define SSL_SESS_CACHE_NO_INTERNAL_STORE        0x0200
#define SSL_SESS_CACHE_NO_INTERNAL \
        (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP|SSL_SESS_CACHE_NO_INTERNAL_STORE)

LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx);
#define SSL_CTX_sess_number(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_NUMBER,0,NULL)
#define SSL_CTX_sess_connect(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT,0,NULL)
#define SSL_CTX_sess_connect_good(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_GOOD,0,NULL)
#define SSL_CTX_sess_connect_renegotiate(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_RENEGOTIATE,0,NULL)
#define SSL_CTX_sess_accept(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT,0,NULL)
#define SSL_CTX_sess_accept_renegotiate(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_RENEGOTIATE,0,NULL)
#define SSL_CTX_sess_accept_good(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_GOOD,0,NULL)
#define SSL_CTX_sess_hits(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_HIT,0,NULL)
#define SSL_CTX_sess_cb_hits(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CB_HIT,0,NULL)
#define SSL_CTX_sess_misses(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_MISSES,0,NULL)
#define SSL_CTX_sess_timeouts(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_TIMEOUTS,0,NULL)
#define SSL_CTX_sess_cache_full(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CACHE_FULL,0,NULL)

void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, int (*new_session_cb)(struct ssl_st *ssl,SSL_SESSION *sess));
int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(struct ssl_st *ssl, SSL_SESSION *sess);
void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, void (*remove_session_cb)(struct ssl_ctx_st *ctx,SSL_SESSION *sess));
void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(struct ssl_ctx_st *ctx, SSL_SESSION *sess);
void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, SSL_SESSION *(*get_session_cb)(struct ssl_st *ssl, unsigned char *data,int len,int *copy));
SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(struct ssl_st *ssl, unsigned char *Data, int len, int *copy);
void SSL_CTX_set_info_callback(SSL_CTX *ctx, void (*cb)(const SSL *ssl,int type,int val));
void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,int type,int val);
void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, int (*client_cert_cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey));
int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL *ssl, X509 **x509, EVP_PKEY **pkey);
#ifndef OPENSSL_NO_ENGINE
int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e);
#endif
void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, int (*app_gen_cookie_cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len));
void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, int (*app_verify_cookie_cb)(SSL *ssl, unsigned char *cookie, unsigned int cookie_len));
#ifndef OPENSSL_NO_NEXTPROTONEG
void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *s,
                                           int (*cb) (SSL *ssl,
                                                      const unsigned char **out,
                                                      unsigned int *outlen,
                                                      void *arg), void *arg);
void SSL_CTX_set_next_proto_select_cb(SSL_CTX *s,
                                      int (*cb) (SSL *ssl, unsigned char **out,
                                                 unsigned char *outlen,
                                                 const unsigned char *in,
                                                 unsigned int inlen, void *arg),
                                      void *arg);

int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
                          const unsigned char *in, unsigned int inlen,
                          const unsigned char *client, unsigned int client_len);
void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
                                    unsigned *len);

#define OPENSSL_NPN_UNSUPPORTED 0
#define OPENSSL_NPN_NEGOTIATED  1
#define OPENSSL_NPN_NO_OVERLAP  2

#endif

int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char* protos,
                            unsigned protos_len);
int SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos,
                        unsigned protos_len);
void SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx,
                                int (*cb) (SSL *ssl,
                                           const unsigned char **out,
                                           unsigned char *outlen,
                                           const unsigned char *in,
                                           unsigned int inlen,
                                           void *arg),
                                void *arg);
void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
                            unsigned *len);

#ifndef OPENSSL_NO_PSK
/* the maximum length of the buffer given to callbacks containing the
 * resulting identity/psk */
#define PSK_MAX_IDENTITY_LEN 128
#define PSK_MAX_PSK_LEN 256
void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 
        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));
void SSL_set_psk_client_callback(SSL *ssl, 
        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));
void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 
        unsigned int (*psk_server_callback)(SSL *ssl, const char *identity,
                unsigned char *psk, unsigned int max_psk_len));
void SSL_set_psk_server_callback(SSL *ssl,
        unsigned int (*psk_server_callback)(SSL *ssl, const char *identity,
                unsigned char *psk, unsigned int max_psk_len));
int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint);
int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint);
const char *SSL_get_psk_identity_hint(const SSL *s);
const char *SSL_get_psk_identity(const SSL *s);
#endif

#ifndef OPENSSL_NO_TLSEXT
/* Register callbacks to handle custom TLS Extensions as client or server.
 * 
 * Returns nonzero on success.  You cannot register twice for the same 
 * extension number, and registering for an extension number already 
 * handled by OpenSSL will succeed, but the callbacks will not be invoked.
 *
 * NULL can be registered for any callback function.  For the client
 * functions, a NULL custom_cli_ext_first_cb_fn sends an empty ClientHello
 * Extension, and a NULL custom_cli_ext_second_cb_fn ignores the ServerHello
 * response (if any).
 *
 * For the server functions, a NULL custom_srv_ext_first_cb_fn means the
 * ClientHello extension's data will be ignored, but the extension will still
 * be noted and custom_srv_ext_second_cb_fn will still be invoked.  A NULL
 * custom_srv_ext_second_cb doesn't send a ServerHello extension.
 */
int SSL_CTX_set_custom_cli_ext(SSL_CTX *ctx, unsigned short ext_type,
                               custom_cli_ext_first_cb_fn fn1, 
                               custom_cli_ext_second_cb_fn fn2, void *arg);

int SSL_CTX_set_custom_srv_ext(SSL_CTX *ctx, unsigned short ext_type,
                               custom_srv_ext_first_cb_fn fn1, 
                               custom_srv_ext_second_cb_fn fn2, void *arg);

/* Register callbacks to handle Supplemental Data as client or server.
 *
 * For SSL_CTX_set_srv_supp_data, a NULL srv_supp_data_first_cb_fn results in no supplemental data
 * being sent by the server for that TLS extension.
 * A NULL srv_supp_data_second_cb_fn results in no supplemental data
 * being received by the server for that TLS extension.
 *
 * For SSL_CTX_set_cli_supp_data, a NULL cli_supp_data_first_cb_fn results in no supplemental data
 * being received by the client for that TLS extension.
 * A NULL cli_supp_data_second_cb_fn results in no supplemental data
 * being sent by the client for that TLS extension.
 *
 * Returns nonzero on success.  You cannot register twice for the same supp_data_type.
 */
int SSL_CTX_set_srv_supp_data(SSL_CTX *ctx,
                              unsigned short supp_data_type,
                              srv_supp_data_first_cb_fn fn1,
                              srv_supp_data_second_cb_fn fn2, void *arg);

int SSL_CTX_set_cli_supp_data(SSL_CTX *ctx,
                              unsigned short supp_data_type,
                              cli_supp_data_first_cb_fn fn1,
                              cli_supp_data_second_cb_fn fn2, void *arg);

#endif

#define SSL_NOTHING     1
#define SSL_WRITING     2
#define SSL_READING     3
#define SSL_X509_LOOKUP 4

/* These will only be used when doing non-blocking IO */
#define SSL_want_nothing(s)     (SSL_want(s) == SSL_NOTHING)
#define SSL_want_read(s)        (SSL_want(s) == SSL_READING)
#define SSL_want_write(s)       (SSL_want(s) == SSL_WRITING)
#define SSL_want_x509_lookup(s) (SSL_want(s) == SSL_X509_LOOKUP)

#define SSL_MAC_FLAG_READ_MAC_STREAM 1
#define SSL_MAC_FLAG_WRITE_MAC_STREAM 2

#ifndef OPENSSL_NO_SSL_INTERN

struct ssl_st
        {
        /* protocol version
         * (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION, DTLS1_VERSION)
         */
        int version;
        int type; /* SSL_ST_CONNECT or SSL_ST_ACCEPT */

        const SSL_METHOD *method; /* SSLv3 */

        /* 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 */

#ifndef OPENSSL_NO_BIO
        BIO *rbio; /* used by SSL_read */
        BIO *wbio; /* used by SSL_write */
        BIO *bbio; /* used during session-id reuse to concatenate
                    * messages */
#else
        char *rbio; /* used by SSL_read */
        char *wbio; /* used by SSL_write */
        char *bbio;
#endif
        /* 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.
         */

        int server;     /* are we the server side? - mostly used by SSL_clear*/

        int new_session;/* 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 quiet_shutdown;/* don't send shutdown packets */
        int shutdown;   /* we have shut things down, 0x01 sent, 0x02
                         * for received */
        int state;      /* where we are */
        int rstate;     /* where we are when reading */

        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 */

        /* used internally to point at a raw packet */
        unsigned char *packet;
        unsigned int packet_length;

        struct ssl2_state_st *s2; /* SSLv2 variables */
        struct ssl3_state_st *s3; /* SSLv3 variables */
        struct dtls1_state_st *d1; /* DTLSv1 variables */

        int read_ahead;         /* Read as many input bytes as possible
                                 * (for non-blocking reads) */

        /* 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;

#if 0
        int purpose;            /* Purpose setting */
        int trust;              /* Trust setting */
#endif

        /* 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 */
#ifndef OPENSSL_NO_COMP
        COMP_CTX *expand;                       /* uncompress */
#else
        char *expand;
#endif

        EVP_CIPHER_CTX *enc_write_ctx;          /* cryptographic state */
        EVP_MD_CTX *write_hash;         /* used for mac generation */
#ifndef OPENSSL_NO_COMP
        COMP_CTX *compress;                     /* compression */
#else
        char *compress; 
#endif

        /* 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 SSL2 and SSL3 */
        int verify_mode;        /* 0 don't care about verify failure.
                                 * 1 fail if verify fails */
        int (*verify_callback)(int ok,X509_STORE_CTX *ctx); /* fail if callback returns 0 */

        void (*info_callback)(const SSL *ssl,int type,int val); /* optional informational callback */

        int error;              /* error bytes to be written */
        int error_code;         /* actual code */

#ifndef OPENSSL_NO_KRB5
        KSSL_CTX *kssl_ctx;     /* Kerberos 5 context */
#endif  /* OPENSSL_NO_KRB5 */

#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;
        unsigned long options; /* protocol behaviour */
        unsigned long mode; /* API behaviour */
        long max_cert_list;
        int first_packet;
        int client_version;     /* what was passed, used for
                                 * SSLv3/TLS rollback check */
        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;
        int servername_done;   /* 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
                               */
        /* 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;
        unsigned char *tlsext_ecpointformatlist; /* our list */
        size_t tlsext_ellipticcurvelist_length;
        unsigned char *tlsext_ellipticcurvelist; /* our list */
#endif /* OPENSSL_NO_EC */

        /* draft-rescorla-tls-opaque-prf-input-00.txt information to be used for handshakes */
        void *tlsext_opaque_prf_input;
        size_t tlsext_opaque_prf_input_len;

        /* 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

        STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;  /* What we'll do */
        SRTP_PROTECTION_PROFILE *srtp_profile;            /* What's been chosen */

        unsigned int tlsext_heartbeat;  /* Is use of the Heartbeat extension negotiated?
                                           0: disabled
                                           1: enabled
                                           2: enabled, but not allowed to send Requests
                                         */
        unsigned int tlsext_hb_pending; /* Indicates if a HeartbeatRequest is in flight */
        unsigned int tlsext_hb_seq;     /* HeartbeatRequest sequence number */

        /* 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 */

        int renegotiate;/* 1 if we are renegotiating.
                         * 2 if we are a server and are inside a handshake
                         * (i.e. not just sending a HelloRequest) */

#ifndef OPENSSL_NO_SRP
        SRP_CTX srp_ctx; /* ctx for SRP authentication */
#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);
        };

#endif

#ifdef __cplusplus
}
#endif

#include <openssl/ssl2.h>
#include <openssl/ssl3.h>
#include <openssl/tls1.h> /* This is mostly sslv3 with a few tweaks */
#include <openssl/dtls1.h> /* Datagram TLS */
#include <openssl/ssl23.h>
#include <openssl/srtp.h>  /* Support for the use_srtp extension */

#ifdef  __cplusplus
extern "C" {
#endif

/* compatibility */
#define SSL_set_app_data(s,arg)         (SSL_set_ex_data(s,0,(char *)arg))
#define SSL_get_app_data(s)             (SSL_get_ex_data(s,0))
#define SSL_SESSION_set_app_data(s,a)   (SSL_SESSION_set_ex_data(s,0,(char *)a))
#define SSL_SESSION_get_app_data(s)     (SSL_SESSION_get_ex_data(s,0))
#define SSL_CTX_get_app_data(ctx)       (SSL_CTX_get_ex_data(ctx,0))
#define SSL_CTX_set_app_data(ctx,arg)   (SSL_CTX_set_ex_data(ctx,0,(char *)arg))

/* The following are the possible values for ssl->state are are
 * used to indicate where we are up to in the SSL connection establishment.
 * The macros that follow are about the only things you should need to use
 * and even then, only when using non-blocking IO.
 * It can also be useful to work out where you were when the connection
 * failed */

#define SSL_ST_CONNECT                  0x1000
#define SSL_ST_ACCEPT                   0x2000
#define SSL_ST_MASK                     0x0FFF
#define SSL_ST_INIT                     (SSL_ST_CONNECT|SSL_ST_ACCEPT)
#define SSL_ST_BEFORE                   0x4000
#define SSL_ST_OK                       0x03
#define SSL_ST_RENEGOTIATE              (0x04|SSL_ST_INIT)

#define SSL_CB_LOOP                     0x01
#define SSL_CB_EXIT                     0x02
#define SSL_CB_READ                     0x04
#define SSL_CB_WRITE                    0x08
#define SSL_CB_ALERT                    0x4000 /* used in callback */
#define SSL_CB_READ_ALERT               (SSL_CB_ALERT|SSL_CB_READ)
#define SSL_CB_WRITE_ALERT              (SSL_CB_ALERT|SSL_CB_WRITE)
#define SSL_CB_ACCEPT_LOOP              (SSL_ST_ACCEPT|SSL_CB_LOOP)
#define SSL_CB_ACCEPT_EXIT              (SSL_ST_ACCEPT|SSL_CB_EXIT)
#define SSL_CB_CONNECT_LOOP             (SSL_ST_CONNECT|SSL_CB_LOOP)
#define SSL_CB_CONNECT_EXIT             (SSL_ST_CONNECT|SSL_CB_EXIT)
#define SSL_CB_HANDSHAKE_START          0x10
#define SSL_CB_HANDSHAKE_DONE           0x20

/* Is the SSL_connection established? */
#define SSL_get_state(a)                SSL_state(a)
#define SSL_is_init_finished(a)         (SSL_state(a) == SSL_ST_OK)
#define SSL_in_init(a)                  (SSL_state(a)&SSL_ST_INIT)
#define SSL_in_before(a)                (SSL_state(a)&SSL_ST_BEFORE)
#define SSL_in_connect_init(a)          (SSL_state(a)&SSL_ST_CONNECT)
#define SSL_in_accept_init(a)           (SSL_state(a)&SSL_ST_ACCEPT)

/* The following 2 states are kept in ssl->rstate when reads fail,
 * you should not need these */
#define SSL_ST_READ_HEADER                      0xF0
#define SSL_ST_READ_BODY                        0xF1
#define SSL_ST_READ_DONE                        0xF2

/* Obtain latest Finished message
 *   -- that we sent (SSL_get_finished)
 *   -- that we expected from peer (SSL_get_peer_finished).
 * Returns length (0 == no Finished so far), copies up to 'count' bytes. */
size_t SSL_get_finished(const SSL *s, void *buf, size_t count);
size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count);

/* use either SSL_VERIFY_NONE or SSL_VERIFY_PEER, the last 2 options
 * are 'ored' with SSL_VERIFY_PEER if they are desired */
#define SSL_VERIFY_NONE                 0x00
#define SSL_VERIFY_PEER                 0x01
#define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
#define SSL_VERIFY_CLIENT_ONCE          0x04

#define OpenSSL_add_ssl_algorithms()    SSL_library_init()
#define SSLeay_add_ssl_algorithms()     SSL_library_init()

/* this is for backward compatibility */
#if 0 /* NEW_SSLEAY */
#define SSL_CTX_set_default_verify(a,b,c) SSL_CTX_set_verify(a,b,c)
#define SSL_set_pref_cipher(c,n)        SSL_set_cipher_list(c,n)
#define SSL_add_session(a,b)            SSL_CTX_add_session((a),(b))
#define SSL_remove_session(a,b)         SSL_CTX_remove_session((a),(b))
#define SSL_flush_sessions(a,b)         SSL_CTX_flush_sessions((a),(b))
#endif
/* More backward compatibility */
#define SSL_get_cipher(s) \
                SSL_CIPHER_get_name(SSL_get_current_cipher(s))
#define SSL_get_cipher_bits(s,np) \
                SSL_CIPHER_get_bits(SSL_get_current_cipher(s),np)
#define SSL_get_cipher_version(s) \
                SSL_CIPHER_get_version(SSL_get_current_cipher(s))
#define SSL_get_cipher_name(s) \
                SSL_CIPHER_get_name(SSL_get_current_cipher(s))
#define SSL_get_time(a)         SSL_SESSION_get_time(a)
#define SSL_set_time(a,b)       SSL_SESSION_set_time((a),(b))
#define SSL_get_timeout(a)      SSL_SESSION_get_timeout(a)
#define SSL_set_timeout(a,b)    SSL_SESSION_set_timeout((a),(b))

#define d2i_SSL_SESSION_bio(bp,s_id) ASN1_d2i_bio_of(SSL_SESSION,SSL_SESSION_new,d2i_SSL_SESSION,bp,s_id)
#define i2d_SSL_SESSION_bio(bp,s_id) ASN1_i2d_bio_of(SSL_SESSION,i2d_SSL_SESSION,bp,s_id)

DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)

#define SSL_AD_REASON_OFFSET            1000 /* offset to get SSL_R_... value from SSL_AD_... */

/* These alert types are for SSLv3 and TLSv1 */
#define SSL_AD_CLOSE_NOTIFY             SSL3_AD_CLOSE_NOTIFY
#define SSL_AD_UNEXPECTED_MESSAGE       SSL3_AD_UNEXPECTED_MESSAGE /* fatal */
#define SSL_AD_BAD_RECORD_MAC           SSL3_AD_BAD_RECORD_MAC     /* fatal */
#define SSL_AD_DECRYPTION_FAILED        TLS1_AD_DECRYPTION_FAILED
#define SSL_AD_RECORD_OVERFLOW          TLS1_AD_RECORD_OVERFLOW
#define SSL_AD_DECOMPRESSION_FAILURE    SSL3_AD_DECOMPRESSION_FAILURE/* fatal */
#define SSL_AD_HANDSHAKE_FAILURE        SSL3_AD_HANDSHAKE_FAILURE/* fatal */
#define SSL_AD_NO_CERTIFICATE           SSL3_AD_NO_CERTIFICATE /* Not for TLS */
#define SSL_AD_BAD_CERTIFICATE          SSL3_AD_BAD_CERTIFICATE
#define SSL_AD_UNSUPPORTED_CERTIFICATE  SSL3_AD_UNSUPPORTED_CERTIFICATE
#define SSL_AD_CERTIFICATE_REVOKED      SSL3_AD_CERTIFICATE_REVOKED
#define SSL_AD_CERTIFICATE_EXPIRED      SSL3_AD_CERTIFICATE_EXPIRED
#define SSL_AD_CERTIFICATE_UNKNOWN      SSL3_AD_CERTIFICATE_UNKNOWN
#define SSL_AD_ILLEGAL_PARAMETER        SSL3_AD_ILLEGAL_PARAMETER   /* fatal */
#define SSL_AD_UNKNOWN_CA               TLS1_AD_UNKNOWN_CA      /* fatal */
#define SSL_AD_ACCESS_DENIED            TLS1_AD_ACCESS_DENIED   /* fatal */
#define SSL_AD_DECODE_ERROR             TLS1_AD_DECODE_ERROR    /* fatal */
#define SSL_AD_DECRYPT_ERROR            TLS1_AD_DECRYPT_ERROR
#define SSL_AD_EXPORT_RESTRICTION       TLS1_AD_EXPORT_RESTRICTION/* fatal */
#define SSL_AD_PROTOCOL_VERSION         TLS1_AD_PROTOCOL_VERSION /* fatal */
#define SSL_AD_INSUFFICIENT_SECURITY    TLS1_AD_INSUFFICIENT_SECURITY/* fatal */
#define SSL_AD_INTERNAL_ERROR           TLS1_AD_INTERNAL_ERROR  /* fatal */
#define SSL_AD_USER_CANCELLED           TLS1_AD_USER_CANCELLED
#define SSL_AD_NO_RENEGOTIATION         TLS1_AD_NO_RENEGOTIATION
#define SSL_AD_UNSUPPORTED_EXTENSION    TLS1_AD_UNSUPPORTED_EXTENSION
#define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
#define SSL_AD_UNRECOGNIZED_NAME        TLS1_AD_UNRECOGNIZED_NAME
#define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
#define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
#define SSL_AD_UNKNOWN_PSK_IDENTITY     TLS1_AD_UNKNOWN_PSK_IDENTITY /* fatal */

#define SSL_ERROR_NONE                  0
#define SSL_ERROR_SSL                   1
#define SSL_ERROR_WANT_READ             2
#define SSL_ERROR_WANT_WRITE            3
#define SSL_ERROR_WANT_X509_LOOKUP      4
#define SSL_ERROR_SYSCALL               5 /* look at error stack/return value/errno */
#define SSL_ERROR_ZERO_RETURN           6
#define SSL_ERROR_WANT_CONNECT          7
#define SSL_ERROR_WANT_ACCEPT           8

#define SSL_CTRL_NEED_TMP_RSA                   1
#define SSL_CTRL_SET_TMP_RSA                    2
#define SSL_CTRL_SET_TMP_DH                     3
#define SSL_CTRL_SET_TMP_ECDH                   4
#define SSL_CTRL_SET_TMP_RSA_CB                 5
#define SSL_CTRL_SET_TMP_DH_CB                  6
#define SSL_CTRL_SET_TMP_ECDH_CB                7

#define SSL_CTRL_GET_SESSION_REUSED             8
#define SSL_CTRL_GET_CLIENT_CERT_REQUEST        9
#define SSL_CTRL_GET_NUM_RENEGOTIATIONS         10
#define SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS       11
#define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS       12
#define SSL_CTRL_GET_FLAGS                      13
#define SSL_CTRL_EXTRA_CHAIN_CERT               14

#define SSL_CTRL_SET_MSG_CALLBACK               15
#define SSL_CTRL_SET_MSG_CALLBACK_ARG           16

/* only applies to datagram connections */
#define SSL_CTRL_SET_MTU                17
/* Stats */
#define SSL_CTRL_SESS_NUMBER                    20
#define SSL_CTRL_SESS_CONNECT                   21
#define SSL_CTRL_SESS_CONNECT_GOOD              22
#define SSL_CTRL_SESS_CONNECT_RENEGOTIATE       23
#define SSL_CTRL_SESS_ACCEPT                    24
#define SSL_CTRL_SESS_ACCEPT_GOOD               25
#define SSL_CTRL_SESS_ACCEPT_RENEGOTIATE        26
#define SSL_CTRL_SESS_HIT                       27
#define SSL_CTRL_SESS_CB_HIT                    28
#define SSL_CTRL_SESS_MISSES                    29
#define SSL_CTRL_SESS_TIMEOUTS                  30
#define SSL_CTRL_SESS_CACHE_FULL                31
#define SSL_CTRL_OPTIONS                        32
#define SSL_CTRL_MODE                           33

#define SSL_CTRL_GET_READ_AHEAD                 40
#define SSL_CTRL_SET_READ_AHEAD                 41
#define SSL_CTRL_SET_SESS_CACHE_SIZE            42
#define SSL_CTRL_GET_SESS_CACHE_SIZE            43
#define SSL_CTRL_SET_SESS_CACHE_MODE            44
#define SSL_CTRL_GET_SESS_CACHE_MODE            45

#define SSL_CTRL_GET_MAX_CERT_LIST              50
#define SSL_CTRL_SET_MAX_CERT_LIST              51

#define SSL_CTRL_SET_MAX_SEND_FRAGMENT          52

/* see tls1.h for macros based on these */
#ifndef OPENSSL_NO_TLSEXT
#define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB       53
#define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG      54
#define SSL_CTRL_SET_TLSEXT_HOSTNAME            55
#define SSL_CTRL_SET_TLSEXT_DEBUG_CB            56
#define SSL_CTRL_SET_TLSEXT_DEBUG_ARG           57
#define SSL_CTRL_GET_TLSEXT_TICKET_KEYS         58
#define SSL_CTRL_SET_TLSEXT_TICKET_KEYS         59
#define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT    60
#define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB 61
#define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB_ARG 62
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB       63
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG   64
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE     65
#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_EXTS     66
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_EXTS     67
#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_IDS      68
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_IDS      69
#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP        70
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP        71

#define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB       72

#define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB    75
#define SSL_CTRL_SET_SRP_VERIFY_PARAM_CB                76
#define SSL_CTRL_SET_SRP_GIVE_CLIENT_PWD_CB             77

#define SSL_CTRL_SET_SRP_ARG            78
#define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME               79
#define SSL_CTRL_SET_TLS_EXT_SRP_STRENGTH               80
#define SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD               81
#ifndef OPENSSL_NO_HEARTBEATS
#define SSL_CTRL_TLS_EXT_SEND_HEARTBEAT                         85
#define SSL_CTRL_GET_TLS_EXT_HEARTBEAT_PENDING          86
#define SSL_CTRL_SET_TLS_EXT_HEARTBEAT_NO_REQUESTS      87
#endif
#endif /* OPENSSL_NO_TLSEXT */

#define DTLS_CTRL_GET_TIMEOUT           73
#define DTLS_CTRL_HANDLE_TIMEOUT        74
#define DTLS_CTRL_LISTEN                        75

#define SSL_CTRL_GET_RI_SUPPORT                 76
#define SSL_CTRL_CLEAR_OPTIONS                  77
#define SSL_CTRL_CLEAR_MODE                     78
#define SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB      79

#define SSL_CTRL_GET_EXTRA_CHAIN_CERTS          82
#define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS        83

#define SSL_CTRL_CHAIN                          88
#define SSL_CTRL_CHAIN_CERT                     89

#define SSL_CTRL_GET_CURVES                     90
#define SSL_CTRL_SET_CURVES                     91
#define SSL_CTRL_SET_CURVES_LIST                92
#define SSL_CTRL_GET_SHARED_CURVE               93
#define SSL_CTRL_SET_ECDH_AUTO                  94
#define SSL_CTRL_SET_SIGALGS                    97
#define SSL_CTRL_SET_SIGALGS_LIST               98
#define SSL_CTRL_CERT_FLAGS                     99
#define SSL_CTRL_CLEAR_CERT_FLAGS               100
#define SSL_CTRL_SET_CLIENT_SIGALGS             101
#define SSL_CTRL_SET_CLIENT_SIGALGS_LIST        102
#define SSL_CTRL_GET_CLIENT_CERT_TYPES          103
#define SSL_CTRL_SET_CLIENT_CERT_TYPES          104
#define SSL_CTRL_BUILD_CERT_CHAIN               105
#define SSL_CTRL_SET_VERIFY_CERT_STORE          106
#define SSL_CTRL_SET_CHAIN_CERT_STORE           107
#define SSL_CTRL_GET_PEER_SIGNATURE_NID         108
#define SSL_CTRL_GET_SERVER_TMP_KEY             109
#define SSL_CTRL_GET_RAW_CIPHERLIST             110
#define SSL_CTRL_GET_EC_POINT_FORMATS           111

#define DTLSv1_get_timeout(ssl, arg) \
        SSL_ctrl(ssl,DTLS_CTRL_GET_TIMEOUT,0, (void *)arg)
#define DTLSv1_handle_timeout(ssl) \
        SSL_ctrl(ssl,DTLS_CTRL_HANDLE_TIMEOUT,0, NULL)
#define DTLSv1_listen(ssl, peer) \
        SSL_ctrl(ssl,DTLS_CTRL_LISTEN,0, (void *)peer)

#define SSL_session_reused(ssl) \
        SSL_ctrl((ssl),SSL_CTRL_GET_SESSION_REUSED,0,NULL)
#define SSL_num_renegotiations(ssl) \
        SSL_ctrl((ssl),SSL_CTRL_GET_NUM_RENEGOTIATIONS,0,NULL)
#define SSL_clear_num_renegotiations(ssl) \
        SSL_ctrl((ssl),SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS,0,NULL)
#define SSL_total_renegotiations(ssl) \
        SSL_ctrl((ssl),SSL_CTRL_GET_TOTAL_RENEGOTIATIONS,0,NULL)

#define SSL_CTX_need_tmp_RSA(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_NEED_TMP_RSA,0,NULL)
#define SSL_CTX_set_tmp_rsa(ctx,rsa) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_RSA,0,(char *)rsa)
#define SSL_CTX_set_tmp_dh(ctx,dh) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_DH,0,(char *)dh)
#define SSL_CTX_set_tmp_ecdh(ctx,ecdh) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH,0,(char *)ecdh)

#define SSL_need_tmp_RSA(ssl) \
        SSL_ctrl(ssl,SSL_CTRL_NEED_TMP_RSA,0,NULL)
#define SSL_set_tmp_rsa(ssl,rsa) \
        SSL_ctrl(ssl,SSL_CTRL_SET_TMP_RSA,0,(char *)rsa)
#define SSL_set_tmp_dh(ssl,dh) \
        SSL_ctrl(ssl,SSL_CTRL_SET_TMP_DH,0,(char *)dh)
#define SSL_set_tmp_ecdh(ssl,ecdh) \
        SSL_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH,0,(char *)ecdh)

#define SSL_CTX_add_extra_chain_cert(ctx,x509) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_EXTRA_CHAIN_CERT,0,(char *)x509)
#define SSL_CTX_get_extra_chain_certs(ctx,px509) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,0,px509)
#define SSL_CTX_clear_extra_chain_certs(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS,0,NULL)

#define SSL_CTX_set0_chain(ctx,sk) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)sk)
#define SSL_CTX_set1_chain(ctx,sk) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)sk)
#define SSL_CTX_add0_chain_cert(ctx,x509) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)x509)
#define SSL_CTX_add1_chain_cert(ctx,x509) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)x509)
#define SSL_CTX_build_cert_chain(ctx, flags) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)

#define SSL_CTX_set0_verify_cert_store(ctx,st) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)st)
#define SSL_CTX_set1_verify_cert_store(ctx,st) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)st)
#define SSL_CTX_set0_chain_cert_store(ctx,st) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)st)
#define SSL_CTX_set1_chain_cert_store(ctx,st) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)st)

#define SSL_set0_chain(ctx,sk) \
        SSL_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)sk)
#define SSL_set1_chain(ctx,sk) \
        SSL_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)sk)
#define SSL_add0_chain_cert(ctx,x509) \
        SSL_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)x509)
#define SSL_add1_chain_cert(ctx,x509) \
        SSL_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)x509)
#define SSL_build_cert_chain(s, flags) \
        SSL_ctrl(s,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
#define SSL_set0_verify_cert_store(s,st) \
        SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)st)
#define SSL_set1_verify_cert_store(s,st) \
        SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)st)
#define SSL_set0_chain_cert_store(s,st) \
        SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)st)
#define SSL_set1_chain_cert_store(s,st) \
        SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)st)

#define SSL_get1_curves(ctx, s) \
        SSL_ctrl(ctx,SSL_CTRL_GET_CURVES,0,(char *)s)
#define SSL_CTX_set1_curves(ctx, clist, clistlen) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CURVES,clistlen,(char *)clist)
#define SSL_CTX_set1_curves_list(ctx, s) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CURVES_LIST,0,(char *)s)
#define SSL_set1_curves(ctx, clist, clistlen) \
        SSL_ctrl(ctx,SSL_CTRL_SET_CURVES,clistlen,(char *)clist)
#define SSL_set1_curves_list(ctx, s) \
        SSL_ctrl(ctx,SSL_CTRL_SET_CURVES_LIST,0,(char *)s)
#define SSL_get_shared_curve(s, n) \
        SSL_ctrl(s,SSL_CTRL_GET_SHARED_CURVE,n,NULL)
#define SSL_CTX_set_ecdh_auto(ctx, onoff) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_ECDH_AUTO,onoff,NULL)
#define SSL_set_ecdh_auto(s, onoff) \
        SSL_ctrl(s,SSL_CTRL_SET_ECDH_AUTO,onoff,NULL)

#define SSL_CTX_set1_sigalgs(ctx, slist, slistlen) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS,slistlen,(int *)slist)
#define SSL_CTX_set1_sigalgs_list(ctx, s) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)s)
#define SSL_set1_sigalgs(ctx, slist, slistlen) \
        SSL_ctrl(ctx,SSL_CTRL_SET_SIGALGS,clistlen,(int *)slist)
#define SSL_set1_sigalgs_list(ctx, s) \
        SSL_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)s)

#define SSL_CTX_set1_client_sigalgs(ctx, slist, slistlen) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)slist)
#define SSL_CTX_set1_client_sigalgs_list(ctx, s) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)s)
#define SSL_set1_client_sigalgs(ctx, slist, slistlen) \
        SSL_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,clistlen,(int *)slist)
#define SSL_set1_client_sigalgs_list(ctx, s) \
        SSL_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)s)

#define SSL_get0_certificate_types(s, clist) \
        SSL_ctrl(s, SSL_CTRL_GET_CLIENT_CERT_TYPES, 0, (char *)clist)

#define SSL_CTX_set1_client_certificate_types(ctx, clist, clistlen) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen,(char *)clist)
#define SSL_set1_client_certificate_types(s, clist, clistlen) \
        SSL_ctrl(s,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen,(char *)clist)

#define SSL_get_peer_signature_nid(s, pn) \
        SSL_ctrl(s,SSL_CTRL_GET_PEER_SIGNATURE_NID,0,pn)

#define SSL_get_server_tmp_key(s, pk) \
        SSL_ctrl(s,SSL_CTRL_GET_SERVER_TMP_KEY,0,pk)

#define SSL_get0_raw_cipherlist(s, plst) \
        SSL_ctrl(s,SSL_CTRL_GET_RAW_CIPHERLIST,0,plst)

#define SSL_get0_ec_point_formats(s, plst) \
        SSL_ctrl(s,SSL_CTRL_GET_EC_POINT_FORMATS,0,plst)

#ifndef OPENSSL_NO_BIO
BIO_METHOD *BIO_f_ssl(void);
BIO *BIO_new_ssl(SSL_CTX *ctx,int client);
BIO *BIO_new_ssl_connect(SSL_CTX *ctx);
BIO *BIO_new_buffer_ssl_connect(SSL_CTX *ctx);
int BIO_ssl_copy_session_id(BIO *to,BIO *from);
void BIO_ssl_shutdown(BIO *ssl_bio);

#endif

int     SSL_CTX_set_cipher_list(SSL_CTX *,const char *str);
SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth);
void    SSL_CTX_free(SSL_CTX *);
long SSL_CTX_set_timeout(SSL_CTX *ctx,long t);
long SSL_CTX_get_timeout(const SSL_CTX *ctx);
X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *);
void SSL_CTX_set_cert_store(SSL_CTX *,X509_STORE *);
int SSL_want(const SSL *s);
int     SSL_clear(SSL *s);

void    SSL_CTX_flush_sessions(SSL_CTX *ctx,long tm);

const SSL_CIPHER *SSL_get_current_cipher(const SSL *s);
int     SSL_CIPHER_get_bits(const SSL_CIPHER *c,int *alg_bits);
char *  SSL_CIPHER_get_version(const SSL_CIPHER *c);
const char *    SSL_CIPHER_get_name(const SSL_CIPHER *c);
unsigned long   SSL_CIPHER_get_id(const SSL_CIPHER *c);

int     SSL_get_fd(const SSL *s);
int     SSL_get_rfd(const SSL *s);
int     SSL_get_wfd(const SSL *s);
const char  * SSL_get_cipher_list(const SSL *s,int n);
char *  SSL_get_shared_ciphers(const SSL *s, char *buf, int len);
int     SSL_get_read_ahead(const SSL * s);
int     SSL_pending(const SSL *s);
#ifndef OPENSSL_NO_SOCK
int     SSL_set_fd(SSL *s, int fd);
int     SSL_set_rfd(SSL *s, int fd);
int     SSL_set_wfd(SSL *s, int fd);
#endif
#ifndef OPENSSL_NO_BIO
void    SSL_set_bio(SSL *s, BIO *rbio,BIO *wbio);
BIO *   SSL_get_rbio(const SSL *s);
BIO *   SSL_get_wbio(const SSL *s);
#endif
int     SSL_set_cipher_list(SSL *s, const char *str);
void    SSL_set_read_ahead(SSL *s, int yes);
int     SSL_get_verify_mode(const SSL *s);
int     SSL_get_verify_depth(const SSL *s);
int     (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *);
void    SSL_set_verify(SSL *s, int mode,
                       int (*callback)(int ok,X509_STORE_CTX *ctx));
void    SSL_set_verify_depth(SSL *s, int depth);
void SSL_set_cert_cb(SSL *s, int (*cb)(SSL *ssl, void *arg), void *arg);
#ifndef OPENSSL_NO_RSA
int     SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
#endif
int     SSL_use_RSAPrivateKey_ASN1(SSL *ssl, unsigned char *d, long len);
int     SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);
int     SSL_use_PrivateKey_ASN1(int pk,SSL *ssl, const unsigned char *d, long len);
int     SSL_use_certificate(SSL *ssl, X509 *x);
int     SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len);

#ifndef OPENSSL_NO_TLSEXT
/* Set serverinfo data for the current active cert. */
int     SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
                               size_t serverinfo_length);
#ifndef OPENSSL_NO_STDIO
int     SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file);
#endif /* NO_STDIO */

#endif

#ifndef OPENSSL_NO_STDIO
int     SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type);
int     SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type);
int     SSL_use_certificate_file(SSL *ssl, const char *file, int type);
int     SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type);
int     SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type);
int     SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type);
int     SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file); /* PEM type */
STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
int     SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
                                            const char *file);
#ifndef OPENSSL_SYS_VMS
#ifndef OPENSSL_SYS_MACINTOSH_CLASSIC /* XXXXX: Better scheme needed! [was: #ifndef MAC_OS_pre_X] */
int     SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
                                           const char *dir);
#endif
#endif

#endif

void    SSL_load_error_strings(void );
const char *SSL_state_string(const SSL *s);
const char *SSL_rstate_string(const SSL *s);
const char *SSL_state_string_long(const SSL *s);
const char *SSL_rstate_string_long(const SSL *s);
long    SSL_SESSION_get_time(const SSL_SESSION *s);
long    SSL_SESSION_set_time(SSL_SESSION *s, long t);
long    SSL_SESSION_get_timeout(const SSL_SESSION *s);
long    SSL_SESSION_set_timeout(SSL_SESSION *s, long t);
void    SSL_copy_session_id(SSL *to,const SSL *from);
X509 *SSL_SESSION_get0_peer(SSL_SESSION *s);
int SSL_SESSION_set1_id_context(SSL_SESSION *s,const unsigned char *sid_ctx,
                               unsigned int sid_ctx_len);

SSL_SESSION *SSL_SESSION_new(void);
const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s,
                                        unsigned int *len);
unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s);
#ifndef OPENSSL_NO_FP_API
int     SSL_SESSION_print_fp(FILE *fp,const SSL_SESSION *ses);
#endif
#ifndef OPENSSL_NO_BIO
int     SSL_SESSION_print(BIO *fp,const SSL_SESSION *ses);
#endif
void    SSL_SESSION_free(SSL_SESSION *ses);
int     i2d_SSL_SESSION(SSL_SESSION *in,unsigned char **pp);
int     SSL_set_session(SSL *to, SSL_SESSION *session);
int     SSL_CTX_add_session(SSL_CTX *s, SSL_SESSION *c);
int     SSL_CTX_remove_session(SSL_CTX *,SSL_SESSION *c);
int     SSL_CTX_set_generate_session_id(SSL_CTX *, GEN_SESSION_CB);
int     SSL_set_generate_session_id(SSL *, GEN_SESSION_CB);
int     SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
                                        unsigned int id_len);
SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a,const unsigned char **pp,
                             long length);

#ifdef HEADER_X509_H
X509 *  SSL_get_peer_certificate(const SSL *s);
#endif

STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s);

int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *);
void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,
                        int (*callback)(int, X509_STORE_CTX *));
void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth);
void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg);
void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb)(SSL *ssl, void *arg), void *arg);
#ifndef OPENSSL_NO_RSA
int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
#endif
int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d, long len);
int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);
int SSL_CTX_use_PrivateKey_ASN1(int pk,SSL_CTX *ctx,
        const unsigned char *d, long len);
int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x);
int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, const unsigned char *d);

void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb);
void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u);

int SSL_CTX_check_private_key(const SSL_CTX *ctx);
int SSL_check_private_key(const SSL *ctx);

int     SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
                                       unsigned int sid_ctx_len);

SSL *   SSL_new(SSL_CTX *ctx);
int     SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
                                   unsigned int sid_ctx_len);

int SSL_CTX_set_purpose(SSL_CTX *s, int purpose);
int SSL_set_purpose(SSL *s, int purpose);
int SSL_CTX_set_trust(SSL_CTX *s, int trust);
int SSL_set_trust(SSL *s, int trust);

int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm);
int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm);

#ifndef OPENSSL_NO_SRP
int SSL_CTX_set_srp_username(SSL_CTX *ctx,char *name);
int SSL_CTX_set_srp_password(SSL_CTX *ctx,char *password);
int SSL_CTX_set_srp_strength(SSL_CTX *ctx, int strength);
int SSL_CTX_set_srp_client_pwd_callback(SSL_CTX *ctx,
                                        char *(*cb)(SSL *,void *));
int SSL_CTX_set_srp_verify_param_callback(SSL_CTX *ctx,
                                          int (*cb)(SSL *,void *));
int SSL_CTX_set_srp_username_callback(SSL_CTX *ctx,
                                      int (*cb)(SSL *,int *,void *));
int SSL_CTX_set_srp_cb_arg(SSL_CTX *ctx, void *arg);

int SSL_set_srp_server_param(SSL *s, const BIGNUM *N, const BIGNUM *g,
                             BIGNUM *sa, BIGNUM *v, char *info);
int SSL_set_srp_server_param_pw(SSL *s, const char *user, const char *pass,
                                const char *grp);

BIGNUM *SSL_get_srp_g(SSL *s);
BIGNUM *SSL_get_srp_N(SSL *s);

char *SSL_get_srp_username(SSL *s);
char *SSL_get_srp_userinfo(SSL *s);
#endif

void    SSL_certs_clear(SSL *s);
void    SSL_free(SSL *ssl);
int     SSL_accept(SSL *ssl);
int     SSL_connect(SSL *ssl);
int     SSL_read(SSL *ssl,void *buf,int num);
int     SSL_peek(SSL *ssl,void *buf,int num);
int     SSL_write(SSL *ssl,const void *buf,int num);
long    SSL_ctrl(SSL *ssl,int cmd, long larg, void *parg);
long    SSL_callback_ctrl(SSL *, int, void (*)(void));
long    SSL_CTX_ctrl(SSL_CTX *ctx,int cmd, long larg, void *parg);
long    SSL_CTX_callback_ctrl(SSL_CTX *, int, void (*)(void));

int     SSL_get_error(const SSL *s,int ret_code);
const char *SSL_get_version(const SSL *s);

/* This sets the 'default' SSL version that SSL_new() will create */
int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth);

#ifndef OPENSSL_NO_SSL2
const SSL_METHOD *SSLv2_method(void);           /* SSLv2 */
const SSL_METHOD *SSLv2_server_method(void);    /* SSLv2 */
const SSL_METHOD *SSLv2_client_method(void);    /* SSLv2 */
#endif

const SSL_METHOD *SSLv3_method(void);           /* SSLv3 */
const SSL_METHOD *SSLv3_server_method(void);    /* SSLv3 */
const SSL_METHOD *SSLv3_client_method(void);    /* SSLv3 */

const SSL_METHOD *SSLv23_method(void);  /* SSLv3 but can rollback to v2 */
const SSL_METHOD *SSLv23_server_method(void);   /* SSLv3 but can rollback to v2 */
const SSL_METHOD *SSLv23_client_method(void);   /* SSLv3 but can rollback to v2 */

const SSL_METHOD *TLSv1_method(void);           /* TLSv1.0 */
const SSL_METHOD *TLSv1_server_method(void);    /* TLSv1.0 */
const SSL_METHOD *TLSv1_client_method(void);    /* TLSv1.0 */

const SSL_METHOD *TLSv1_1_method(void);         /* TLSv1.1 */
const SSL_METHOD *TLSv1_1_server_method(void);  /* TLSv1.1 */
const SSL_METHOD *TLSv1_1_client_method(void);  /* TLSv1.1 */

const SSL_METHOD *TLSv1_2_method(void);         /* TLSv1.2 */
const SSL_METHOD *TLSv1_2_server_method(void);  /* TLSv1.2 */
const SSL_METHOD *TLSv1_2_client_method(void);  /* TLSv1.2 */


const SSL_METHOD *DTLSv1_method(void);          /* DTLSv1.0 */
const SSL_METHOD *DTLSv1_server_method(void);   /* DTLSv1.0 */
const SSL_METHOD *DTLSv1_client_method(void);   /* DTLSv1.0 */

const SSL_METHOD *DTLSv1_2_method(void);        /* DTLSv1.2 */
const SSL_METHOD *DTLSv1_2_server_method(void); /* DTLSv1.2 */
const SSL_METHOD *DTLSv1_2_client_method(void); /* DTLSv1.2 */

const SSL_METHOD *DTLS_method(void);            /* DTLS 1.0 and 1.2 */
const SSL_METHOD *DTLS_server_method(void);     /* DTLS 1.0 and 1.2 */
const SSL_METHOD *DTLS_client_method(void);     /* DTLS 1.0 and 1.2 */

STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s);

int SSL_do_handshake(SSL *s);
int SSL_renegotiate(SSL *s);
int SSL_renegotiate_abbreviated(SSL *s);
int SSL_renegotiate_pending(SSL *s);
int SSL_shutdown(SSL *s);

const SSL_METHOD *SSL_get_ssl_method(SSL *s);
int SSL_set_ssl_method(SSL *s, const SSL_METHOD *method);
const char *SSL_alert_type_string_long(int value);
const char *SSL_alert_type_string(int value);
const char *SSL_alert_desc_string_long(int value);
const char *SSL_alert_desc_string(int value);

void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s);
STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *s);
int SSL_add_client_CA(SSL *ssl,X509 *x);
int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x);

void SSL_set_connect_state(SSL *s);
void SSL_set_accept_state(SSL *s);

long SSL_get_default_timeout(const SSL *s);

int SSL_library_init(void );

char *SSL_CIPHER_description(const SSL_CIPHER *,char *buf,int size);
STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk);

SSL *SSL_dup(SSL *ssl);

X509 *SSL_get_certificate(const SSL *ssl);
/* EVP_PKEY */ struct evp_pkey_st *SSL_get_privatekey(SSL *ssl);

void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode);
int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
void SSL_set_quiet_shutdown(SSL *ssl,int mode);
int SSL_get_quiet_shutdown(const SSL *ssl);
void SSL_set_shutdown(SSL *ssl,int mode);
int SSL_get_shutdown(const SSL *ssl);
int SSL_version(const SSL *ssl);
int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
        const char *CApath);
#define SSL_get0_session SSL_get_session /* just peek at pointer */
SSL_SESSION *SSL_get_session(const SSL *ssl);
SSL_SESSION *SSL_get1_session(SSL *ssl); /* obtain a reference count */
SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx);
void SSL_set_info_callback(SSL *ssl,
                           void (*cb)(const SSL *ssl,int type,int val));
void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl,int type,int val);
int SSL_state(const SSL *ssl);
void SSL_set_state(SSL *ssl, int state);

void SSL_set_verify_result(SSL *ssl,long v);
long SSL_get_verify_result(const SSL *ssl);

int SSL_set_ex_data(SSL *ssl,int idx,void *data);
void *SSL_get_ex_data(const SSL *ssl,int idx);
int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
        CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);

int SSL_SESSION_set_ex_data(SSL_SESSION *ss,int idx,void *data);
void *SSL_SESSION_get_ex_data(const SSL_SESSION *ss,int idx);
int SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
        CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);

int SSL_CTX_set_ex_data(SSL_CTX *ssl,int idx,void *data);
void *SSL_CTX_get_ex_data(const SSL_CTX *ssl,int idx);
int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
        CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);

int SSL_get_ex_data_X509_STORE_CTX_idx(void );

#define SSL_CTX_sess_set_cache_size(ctx,t) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_SIZE,t,NULL)
#define SSL_CTX_sess_get_cache_size(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_SIZE,0,NULL)
#define SSL_CTX_set_session_cache_mode(ctx,m) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_MODE,m,NULL)
#define SSL_CTX_get_session_cache_mode(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_MODE,0,NULL)

#define SSL_CTX_get_default_read_ahead(ctx) SSL_CTX_get_read_ahead(ctx)
#define SSL_CTX_set_default_read_ahead(ctx,m) SSL_CTX_set_read_ahead(ctx,m)
#define SSL_CTX_get_read_ahead(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_GET_READ_AHEAD,0,NULL)
#define SSL_CTX_set_read_ahead(ctx,m) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_READ_AHEAD,m,NULL)
#define SSL_CTX_get_max_cert_list(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
#define SSL_CTX_set_max_cert_list(ctx,m) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
#define SSL_get_max_cert_list(ssl) \
        SSL_ctrl(ssl,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
#define SSL_set_max_cert_list(ssl,m) \
        SSL_ctrl(ssl,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)

#define SSL_CTX_set_max_send_fragment(ctx,m) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
#define SSL_set_max_send_fragment(ssl,m) \
        SSL_ctrl(ssl,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)

     /* NB: the keylength is only applicable when is_export is true */
#ifndef OPENSSL_NO_RSA
void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,
                                  RSA *(*cb)(SSL *ssl,int is_export,
                                             int keylength));

void SSL_set_tmp_rsa_callback(SSL *ssl,
                                  RSA *(*cb)(SSL *ssl,int is_export,
                                             int keylength));
#endif
#ifndef OPENSSL_NO_DH
void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
                                 DH *(*dh)(SSL *ssl,int is_export,
                                           int keylength));
void SSL_set_tmp_dh_callback(SSL *ssl,
                                 DH *(*dh)(SSL *ssl,int is_export,
                                           int keylength));
#endif
#ifndef OPENSSL_NO_ECDH
void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
                                 EC_KEY *(*ecdh)(SSL *ssl,int is_export,
                                           int keylength));
void SSL_set_tmp_ecdh_callback(SSL *ssl,
                                 EC_KEY *(*ecdh)(SSL *ssl,int is_export,
                                           int keylength));
#endif

#ifndef OPENSSL_NO_COMP
const COMP_METHOD *SSL_get_current_compression(SSL *s);
const COMP_METHOD *SSL_get_current_expansion(SSL *s);
const char *SSL_COMP_get_name(const COMP_METHOD *comp);
STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
int SSL_COMP_add_compression_method(int id,COMP_METHOD *cm);
#else
const void *SSL_get_current_compression(SSL *s);
const void *SSL_get_current_expansion(SSL *s);
const char *SSL_COMP_get_name(const void *comp);
void *SSL_COMP_get_compression_methods(void);
int SSL_COMP_add_compression_method(int id,void *cm);
#endif

const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr);

/* TLS extensions functions */
int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len);

int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb,
                                  void *arg);

/* Pre-shared secret session resumption functions */
int SSL_set_session_secret_cb(SSL *s, tls_session_secret_cb_fn tls_session_secret_cb, void *arg);

void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
        int (*cb)(SSL *ssl, int is_forward_secure));

void SSL_set_not_resumable_session_callback(SSL *ssl,
        int (*cb)(SSL *ssl, int is_forward_secure));

void SSL_set_debug(SSL *s, int debug);
int SSL_cache_hit(SSL *s);
int SSL_is_server(SSL *s);

SSL_CONF_CTX *SSL_CONF_CTX_new(void);
void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx);
unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags);
unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags);
int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre);

void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl);
void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx);

int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value);
int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv);

#ifndef OPENSSL_NO_SSL_TRACE
void SSL_trace(int write_p, int version, int content_type,
                const void *buf, size_t len, SSL *ssl, void *arg);
const char *SSL_CIPHER_standard_name(const SSL_CIPHER *c);
#endif

/* BEGIN ERROR CODES */
/* The following lines are auto generated by the script mkerr.pl. Any changes
 * made after this point may be overwritten when the script is next run.
 */
void ERR_load_SSL_strings(void);

/* Error codes for the SSL functions. */

/* Function codes. */
#define SSL_F_CHECK_SUITEB_CIPHER_LIST                   335
#define SSL_F_CLIENT_CERTIFICATE                         100
#define SSL_F_CLIENT_FINISHED                            167
#define SSL_F_CLIENT_HELLO                               101
#define SSL_F_CLIENT_MASTER_KEY                          102
#define SSL_F_D2I_SSL_SESSION                            103
#define SSL_F_DO_DTLS1_WRITE                             245
#define SSL_F_DO_SSL3_WRITE                              104
#define SSL_F_DTLS1_ACCEPT                               246
#define SSL_F_DTLS1_ADD_CERT_TO_BUF                      295
#define SSL_F_DTLS1_BUFFER_RECORD                        247
#define SSL_F_DTLS1_CHECK_TIMEOUT_NUM                    318
#define SSL_F_DTLS1_CLIENT_HELLO                         248
#define SSL_F_DTLS1_CONNECT                              249
#define SSL_F_DTLS1_ENC                                  250
#define SSL_F_DTLS1_GET_HELLO_VERIFY                     251
#define SSL_F_DTLS1_GET_MESSAGE                          252
#define SSL_F_DTLS1_GET_MESSAGE_FRAGMENT                 253
#define SSL_F_DTLS1_GET_RECORD                           254
#define SSL_F_DTLS1_HANDLE_TIMEOUT                       297
#define SSL_F_DTLS1_HEARTBEAT                            305
#define SSL_F_DTLS1_OUTPUT_CERT_CHAIN                    255
#define SSL_F_DTLS1_PREPROCESS_FRAGMENT                  288
#define SSL_F_DTLS1_PROCESS_OUT_OF_SEQ_MESSAGE           256
#define SSL_F_DTLS1_PROCESS_RECORD                       257
#define SSL_F_DTLS1_READ_BYTES                           258
#define SSL_F_DTLS1_READ_FAILED                          259
#define SSL_F_DTLS1_SEND_CERTIFICATE_REQUEST             260
#define SSL_F_DTLS1_SEND_CLIENT_CERTIFICATE              261
#define SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE             262
#define SSL_F_DTLS1_SEND_CLIENT_VERIFY                   263
#define SSL_F_DTLS1_SEND_HELLO_VERIFY_REQUEST            264
#define SSL_F_DTLS1_SEND_SERVER_CERTIFICATE              265
#define SSL_F_DTLS1_SEND_SERVER_HELLO                    266
#define SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE             267
#define SSL_F_DTLS1_WRITE_APP_DATA_BYTES                 268
#define SSL_F_GET_CLIENT_FINISHED                        105
#define SSL_F_GET_CLIENT_HELLO                           106
#define SSL_F_GET_CLIENT_MASTER_KEY                      107
#define SSL_F_GET_SERVER_FINISHED                        108
#define SSL_F_GET_SERVER_HELLO                           109
#define SSL_F_GET_SERVER_VERIFY                          110
#define SSL_F_I2D_SSL_SESSION                            111
#define SSL_F_READ_N                                     112
#define SSL_F_REQUEST_CERTIFICATE                        113
#define SSL_F_SERVER_FINISH                              239
#define SSL_F_SERVER_HELLO                               114
#define SSL_F_SERVER_VERIFY                              240
#define SSL_F_SSL23_ACCEPT                               115
#define SSL_F_SSL23_CLIENT_HELLO                         116
#define SSL_F_SSL23_CONNECT                              117
#define SSL_F_SSL23_GET_CLIENT_HELLO                     118
#define SSL_F_SSL23_GET_SERVER_HELLO                     119
#define SSL_F_SSL23_PEEK                                 237
#define SSL_F_SSL23_READ                                 120
#define SSL_F_SSL23_WRITE                                121
#define SSL_F_SSL2_ACCEPT                                122
#define SSL_F_SSL2_CONNECT                               123
#define SSL_F_SSL2_ENC_INIT                              124
#define SSL_F_SSL2_GENERATE_KEY_MATERIAL                 241
#define SSL_F_SSL2_PEEK                                  234
#define SSL_F_SSL2_READ                                  125
#define SSL_F_SSL2_READ_INTERNAL                         236
#define SSL_F_SSL2_SET_CERTIFICATE                       126
#define SSL_F_SSL2_WRITE                                 127
#define SSL_F_SSL3_ACCEPT                                128
#define SSL_F_SSL3_ADD_CERT_TO_BUF                       296
#define SSL_F_SSL3_CALLBACK_CTRL                         233
#define SSL_F_SSL3_CHANGE_CIPHER_STATE                   129
#define SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM              130
#define SSL_F_SSL3_CHECK_CLIENT_HELLO                    304
#define SSL_F_SSL3_CLIENT_HELLO                          131
#define SSL_F_SSL3_CONNECT                               132
#define SSL_F_SSL3_CTRL                                  213
#define SSL_F_SSL3_CTX_CTRL                              133
#define SSL_F_SSL3_DIGEST_CACHED_RECORDS                 293
#define SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC                 292
#define SSL_F_SSL3_ENC                                   134
#define SSL_F_SSL3_GENERATE_KEY_BLOCK                    238
#define SSL_F_SSL3_GET_CERTIFICATE_REQUEST               135
#define SSL_F_SSL3_GET_CERT_STATUS                       289
#define SSL_F_SSL3_GET_CERT_VERIFY                       136
#define SSL_F_SSL3_GET_CLIENT_CERTIFICATE                137
#define SSL_F_SSL3_GET_CLIENT_HELLO                      138
#define SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE               139
#define SSL_F_SSL3_GET_FINISHED                          140
#define SSL_F_SSL3_GET_KEY_EXCHANGE                      141
#define SSL_F_SSL3_GET_MESSAGE                           142
#define SSL_F_SSL3_GET_NEW_SESSION_TICKET                283
#define SSL_F_SSL3_GET_NEXT_PROTO                        306
#define SSL_F_SSL3_GET_RECORD                            143
#define SSL_F_SSL3_GET_SERVER_CERTIFICATE                144
#define SSL_F_SSL3_GET_SERVER_DONE                       145
#define SSL_F_SSL3_GET_SERVER_HELLO                      146
#define SSL_F_SSL3_HANDSHAKE_MAC                         285
#define SSL_F_SSL3_NEW_SESSION_TICKET                    287
#define SSL_F_SSL3_OUTPUT_CERT_CHAIN                     147
#define SSL_F_SSL3_PEEK                                  235
#define SSL_F_SSL3_READ_BYTES                            148
#define SSL_F_SSL3_READ_N                                149
#define SSL_F_SSL3_SEND_CERTIFICATE_REQUEST              150
#define SSL_F_SSL3_SEND_CLIENT_CERTIFICATE               151
#define SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE              152
#define SSL_F_SSL3_SEND_CLIENT_VERIFY                    153
#define SSL_F_SSL3_SEND_SERVER_CERTIFICATE               154
#define SSL_F_SSL3_SEND_SERVER_HELLO                     242
#define SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE              155
#define SSL_F_SSL3_SETUP_KEY_BLOCK                       157
#define SSL_F_SSL3_SETUP_READ_BUFFER                     156
#define SSL_F_SSL3_SETUP_WRITE_BUFFER                    291
#define SSL_F_SSL3_WRITE_BYTES                           158
#define SSL_F_SSL3_WRITE_PENDING                         159
#define SSL_F_SSL_ADD_CERT_CHAIN                         316
#define SSL_F_SSL_ADD_CERT_TO_BUF                        317
#define SSL_F_SSL_ADD_CLIENTHELLO_RENEGOTIATE_EXT        298
#define SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT                 277
#define SSL_F_SSL_ADD_CLIENTHELLO_USE_SRTP_EXT           307
#define SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK         215
#define SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK        216
#define SSL_F_SSL_ADD_SERVERHELLO_RENEGOTIATE_EXT        299
#define SSL_F_SSL_ADD_SERVERHELLO_TLSEXT                 278
#define SSL_F_SSL_ADD_SERVERHELLO_USE_SRTP_EXT           308
#define SSL_F_SSL_BAD_METHOD                             160
#define SSL_F_SSL_BUILD_CERT_CHAIN                       332
#define SSL_F_SSL_BYTES_TO_CIPHER_LIST                   161
#define SSL_F_SSL_CERT_DUP                               221
#define SSL_F_SSL_CERT_INST                              222
#define SSL_F_SSL_CERT_INSTANTIATE                       214
#define SSL_F_SSL_CERT_NEW                               162
#define SSL_F_SSL_CHECK_PRIVATE_KEY                      163
#define SSL_F_SSL_CHECK_SERVERHELLO_TLSEXT               280
#define SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG            279
#define SSL_F_SSL_CIPHER_PROCESS_RULESTR                 230
#define SSL_F_SSL_CIPHER_STRENGTH_SORT                   231
#define SSL_F_SSL_CLEAR                                  164
#define SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD            165
#define SSL_F_SSL_CONF_CMD                               334
#define SSL_F_SSL_CREATE_CIPHER_LIST                     166
#define SSL_F_SSL_CTRL                                   232
#define SSL_F_SSL_CTX_CHECK_PRIVATE_KEY                  168
#define SSL_F_SSL_CTX_MAKE_PROFILES                      309
#define SSL_F_SSL_CTX_NEW                                169
#define SSL_F_SSL_CTX_SET_CIPHER_LIST                    269
#define SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE             290
#define SSL_F_SSL_CTX_SET_PURPOSE                        226
#define SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT             219
#define SSL_F_SSL_CTX_SET_SSL_VERSION                    170
#define SSL_F_SSL_CTX_SET_TRUST                          229
#define SSL_F_SSL_CTX_USE_CERTIFICATE                    171
#define SSL_F_SSL_CTX_USE_CERTIFICATE_ASN1               172
#define SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE         220
#define SSL_F_SSL_CTX_USE_CERTIFICATE_FILE               173
#define SSL_F_SSL_CTX_USE_PRIVATEKEY                     174
#define SSL_F_SSL_CTX_USE_PRIVATEKEY_ASN1                175
#define SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE                176
#define SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT              272
#define SSL_F_SSL_CTX_USE_RSAPRIVATEKEY                  177
#define SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_ASN1             178
#define SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE             179
#define SSL_F_SSL_CTX_USE_SERVERINFO                     336
#define SSL_F_SSL_CTX_USE_SERVERINFO_FILE                337
#define SSL_F_SSL_DO_HANDSHAKE                           180
#define SSL_F_SSL_GET_NEW_SESSION                        181
#define SSL_F_SSL_GET_PREV_SESSION                       217
#define SSL_F_SSL_GET_SERVER_CERT_INDEX                  331
#define SSL_F_SSL_GET_SERVER_SEND_PKEY                   182
#define SSL_F_SSL_GET_SIGN_PKEY                          183
#define SSL_F_SSL_INIT_WBIO_BUFFER                       184
#define SSL_F_SSL_LOAD_CLIENT_CA_FILE                    185
#define SSL_F_SSL_NEW                                    186
#define SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT      300
#define SSL_F_SSL_PARSE_CLIENTHELLO_TLSEXT               302
#define SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT         310
#define SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT      301
#define SSL_F_SSL_PARSE_SERVERHELLO_TLSEXT               303
#define SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT         311
#define SSL_F_SSL_PEEK                                   270
#define SSL_F_SSL_PREPARE_CLIENTHELLO_TLSEXT             281
#define SSL_F_SSL_PREPARE_SERVERHELLO_TLSEXT             282
#define SSL_F_SSL_READ                                   223
#define SSL_F_SSL_RSA_PRIVATE_DECRYPT                    187
#define SSL_F_SSL_RSA_PUBLIC_ENCRYPT                     188
#define SSL_F_SSL_SCAN_CLIENTHELLO_TLSEXT                319
#define SSL_F_SSL_SCAN_SERVERHELLO_TLSEXT                320
#define SSL_F_SSL_SESSION_NEW                            189
#define SSL_F_SSL_SESSION_PRINT_FP                       190
#define SSL_F_SSL_SESSION_SET1_ID_CONTEXT                312
#define SSL_F_SSL_SESS_CERT_NEW                          225
#define SSL_F_SSL_SET_CERT                               191
#define SSL_F_SSL_SET_CIPHER_LIST                        271
#define SSL_F_SSL_SET_FD                                 192
#define SSL_F_SSL_SET_PKEY                               193
#define SSL_F_SSL_SET_PURPOSE                            227
#define SSL_F_SSL_SET_RFD                                194
#define SSL_F_SSL_SET_SESSION                            195
#define SSL_F_SSL_SET_SESSION_ID_CONTEXT                 218
#define SSL_F_SSL_SET_SESSION_TICKET_EXT                 294
#define SSL_F_SSL_SET_TRUST                              228
#define SSL_F_SSL_SET_WFD                                196
#define SSL_F_SSL_SHUTDOWN                               224
#define SSL_F_SSL_SRP_CTX_INIT                           313
#define SSL_F_SSL_UNDEFINED_CONST_FUNCTION               243
#define SSL_F_SSL_UNDEFINED_FUNCTION                     197
#define SSL_F_SSL_UNDEFINED_VOID_FUNCTION                244
#define SSL_F_SSL_USE_CERTIFICATE                        198
#define SSL_F_SSL_USE_CERTIFICATE_ASN1                   199
#define SSL_F_SSL_USE_CERTIFICATE_FILE                   200
#define SSL_F_SSL_USE_PRIVATEKEY                         201
#define SSL_F_SSL_USE_PRIVATEKEY_ASN1                    202
#define SSL_F_SSL_USE_PRIVATEKEY_FILE                    203
#define SSL_F_SSL_USE_PSK_IDENTITY_HINT                  273
#define SSL_F_SSL_USE_RSAPRIVATEKEY                      204
#define SSL_F_SSL_USE_RSAPRIVATEKEY_ASN1                 205
#define SSL_F_SSL_USE_RSAPRIVATEKEY_FILE                 206
#define SSL_F_SSL_VERIFY_CERT_CHAIN                      207
#define SSL_F_SSL_WRITE                                  208
#define SSL_F_TLS12_CHECK_PEER_SIGALG                    333
#define SSL_F_TLS1_CERT_VERIFY_MAC                       286
#define SSL_F_TLS1_CHANGE_CIPHER_STATE                   209
#define SSL_F_TLS1_CHECK_SERVERHELLO_TLSEXT              274
#define SSL_F_TLS1_ENC                                   210
#define SSL_F_TLS1_EXPORT_KEYING_MATERIAL                314
#define SSL_F_TLS1_GET_CLIENT_SUPPLEMENTAL_DATA          338
#define SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA          326
#define SSL_F_TLS1_HEARTBEAT                             315
#define SSL_F_TLS1_PREPARE_CLIENTHELLO_TLSEXT            275
#define SSL_F_TLS1_PREPARE_SERVERHELLO_TLSEXT            276
#define SSL_F_TLS1_PRF                                   284
#define SSL_F_TLS1_SEND_CLIENT_SUPPLEMENTAL_DATA         339
#define SSL_F_TLS1_SEND_SERVER_SUPPLEMENTAL_DATA         327
#define SSL_F_TLS1_SETUP_KEY_BLOCK                       211
#define SSL_F_WRITE_PENDING                              212

/* Reason codes. */
#define SSL_R_APP_DATA_IN_HANDSHAKE                      100
#define SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT 272
#define SSL_R_BAD_ALERT_RECORD                           101
#define SSL_R_BAD_AUTHENTICATION_TYPE                    102
#define SSL_R_BAD_CHANGE_CIPHER_SPEC                     103
#define SSL_R_BAD_CHECKSUM                               104
#define SSL_R_BAD_DATA                                   390
#define SSL_R_BAD_DATA_RETURNED_BY_CALLBACK              106
#define SSL_R_BAD_DECOMPRESSION                          107
#define SSL_R_BAD_DH_G_LENGTH                            108
#define SSL_R_BAD_DH_PUB_KEY_LENGTH                      109
#define SSL_R_BAD_DH_P_LENGTH                            110
#define SSL_R_BAD_DIGEST_LENGTH                          111
#define SSL_R_BAD_DSA_SIGNATURE                          112
#define SSL_R_BAD_ECC_CERT                               304
#define SSL_R_BAD_ECDSA_SIGNATURE                        305
#define SSL_R_BAD_ECPOINT                                306
#define SSL_R_BAD_HANDSHAKE_LENGTH                       332
#define SSL_R_BAD_HELLO_REQUEST                          105
#define SSL_R_BAD_LENGTH                                 271
#define SSL_R_BAD_MAC_DECODE                             113
#define SSL_R_BAD_MAC_LENGTH                             333
#define SSL_R_BAD_MESSAGE_TYPE                           114
#define SSL_R_BAD_PACKET_LENGTH                          115
#define SSL_R_BAD_PROTOCOL_VERSION_NUMBER                116
#define SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH               316
#define SSL_R_BAD_RESPONSE_ARGUMENT                      117
#define SSL_R_BAD_RSA_DECRYPT                            118
#define SSL_R_BAD_RSA_ENCRYPT                            119
#define SSL_R_BAD_RSA_E_LENGTH                           120
#define SSL_R_BAD_RSA_MODULUS_LENGTH                     121
#define SSL_R_BAD_RSA_SIGNATURE                          122
#define SSL_R_BAD_SIGNATURE                              123
#define SSL_R_BAD_SRP_A_LENGTH                           347
#define SSL_R_BAD_SRP_B_LENGTH                           348
#define SSL_R_BAD_SRP_G_LENGTH                           349
#define SSL_R_BAD_SRP_N_LENGTH                           350
#define SSL_R_BAD_SRP_S_LENGTH                           351
#define SSL_R_BAD_SRTP_MKI_VALUE                         352
#define SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST           353
#define SSL_R_BAD_SSL_FILETYPE                           124
#define SSL_R_BAD_SSL_SESSION_ID_LENGTH                  125
#define SSL_R_BAD_STATE                                  126
#define SSL_R_BAD_VALUE                                  384
#define SSL_R_BAD_WRITE_RETRY                            127
#define SSL_R_BIO_NOT_SET                                128
#define SSL_R_BLOCK_CIPHER_PAD_IS_WRONG                  129
#define SSL_R_BN_LIB                                     130
#define SSL_R_CA_DN_LENGTH_MISMATCH                      131
#define SSL_R_CA_DN_TOO_LONG                             132
#define SSL_R_CCS_RECEIVED_EARLY                         133
#define SSL_R_CERTIFICATE_VERIFY_FAILED                  134
#define SSL_R_CERT_CB_ERROR                              377
#define SSL_R_CERT_LENGTH_MISMATCH                       135
#define SSL_R_CHALLENGE_IS_DIFFERENT                     136
#define SSL_R_CIPHER_CODE_WRONG_LENGTH                   137
#define SSL_R_CIPHER_OR_HASH_UNAVAILABLE                 138
#define SSL_R_CIPHER_TABLE_SRC_ERROR                     139
#define SSL_R_CLIENTHELLO_TLSEXT                         226
#define SSL_R_COMPRESSED_LENGTH_TOO_LONG                 140
#define SSL_R_COMPRESSION_DISABLED                       343
#define SSL_R_COMPRESSION_FAILURE                        141
#define SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE    307
#define SSL_R_COMPRESSION_LIBRARY_ERROR                  142
#define SSL_R_CONNECTION_ID_IS_DIFFERENT                 143
#define SSL_R_CONNECTION_TYPE_NOT_SET                    144
#define SSL_R_COOKIE_MISMATCH                            308
#define SSL_R_DATA_BETWEEN_CCS_AND_FINISHED              145
#define SSL_R_DATA_LENGTH_TOO_LONG                       146
#define SSL_R_DECRYPTION_FAILED                          147
#define SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC        281
#define SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG            148
#define SSL_R_DIGEST_CHECK_FAILED                        149
#define SSL_R_DTLS_MESSAGE_TOO_BIG                       334
#define SSL_R_DUPLICATE_COMPRESSION_ID                   309
#define SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT             317
#define SSL_R_ECC_CERT_NOT_FOR_SIGNING                   318
#define SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE         322
#define SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE        323
#define SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER               310
#define SSL_R_EMPTY_SRTP_PROTECTION_PROFILE_LIST         354
#define SSL_R_ENCRYPTED_LENGTH_TOO_LONG                  150
#define SSL_R_ERROR_GENERATING_TMP_RSA_KEY               282
#define SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST              151
#define SSL_R_EXCESSIVE_MESSAGE_SIZE                     152
#define SSL_R_EXTRA_DATA_IN_MESSAGE                      153
#define SSL_R_GOT_A_FIN_BEFORE_A_CCS                     154
#define SSL_R_GOT_NEXT_PROTO_BEFORE_A_CCS                355
#define SSL_R_GOT_NEXT_PROTO_WITHOUT_EXTENSION           356
#define SSL_R_HTTPS_PROXY_REQUEST                        155
#define SSL_R_HTTP_REQUEST                               156
#define SSL_R_ILLEGAL_PADDING                            283
#define SSL_R_ILLEGAL_SUITEB_DIGEST                      380
#define SSL_R_INCONSISTENT_COMPRESSION                   340
#define SSL_R_INVALID_CHALLENGE_LENGTH                   158
#define SSL_R_INVALID_COMMAND                            280
#define SSL_R_INVALID_COMPRESSION_ALGORITHM              341
#define SSL_R_INVALID_NULL_CMD_NAME                      385
#define SSL_R_INVALID_PURPOSE                            278
#define SSL_R_INVALID_SERVERINFO_DATA                    389
#define SSL_R_INVALID_SRP_USERNAME                       357
#define SSL_R_INVALID_STATUS_RESPONSE                    328
#define SSL_R_INVALID_TICKET_KEYS_LENGTH                 325
#define SSL_R_INVALID_TRUST                              279
#define SSL_R_KEY_ARG_TOO_LONG                           284
#define SSL_R_KRB5                                       285
#define SSL_R_KRB5_C_CC_PRINC                            286
#define SSL_R_KRB5_C_GET_CRED                            287
#define SSL_R_KRB5_C_INIT                                288
#define SSL_R_KRB5_C_MK_REQ                              289
#define SSL_R_KRB5_S_BAD_TICKET                          290
#define SSL_R_KRB5_S_INIT                                291
#define SSL_R_KRB5_S_RD_REQ                              292
#define SSL_R_KRB5_S_TKT_EXPIRED                         293
#define SSL_R_KRB5_S_TKT_NYV                             294
#define SSL_R_KRB5_S_TKT_SKEW                            295
#define SSL_R_LENGTH_MISMATCH                            159
#define SSL_R_LENGTH_TOO_SHORT                           160
#define SSL_R_LIBRARY_BUG                                274
#define SSL_R_LIBRARY_HAS_NO_CIPHERS                     161
#define SSL_R_MESSAGE_TOO_LONG                           296
#define SSL_R_MISSING_DH_DSA_CERT                        162
#define SSL_R_MISSING_DH_KEY                             163
#define SSL_R_MISSING_DH_RSA_CERT                        164
#define SSL_R_MISSING_DSA_SIGNING_CERT                   165
#define SSL_R_MISSING_ECDH_CERT                          382
#define SSL_R_MISSING_ECDSA_SIGNING_CERT                 381
#define SSL_R_MISSING_EXPORT_TMP_DH_KEY                  166
#define SSL_R_MISSING_EXPORT_TMP_RSA_KEY                 167
#define SSL_R_MISSING_RSA_CERTIFICATE                    168
#define SSL_R_MISSING_RSA_ENCRYPTING_CERT                169
#define SSL_R_MISSING_RSA_SIGNING_CERT                   170
#define SSL_R_MISSING_SRP_PARAM                          358
#define SSL_R_MISSING_TMP_DH_KEY                         171
#define SSL_R_MISSING_TMP_ECDH_KEY                       311
#define SSL_R_MISSING_TMP_RSA_KEY                        172
#define SSL_R_MISSING_TMP_RSA_PKEY                       173
#define SSL_R_MISSING_VERIFY_MESSAGE                     174
#define SSL_R_MULTIPLE_SGC_RESTARTS                      346
#define SSL_R_NON_SSLV2_INITIAL_PACKET                   175
#define SSL_R_NO_CERTIFICATES_RETURNED                   176
#define SSL_R_NO_CERTIFICATE_ASSIGNED                    177
#define SSL_R_NO_CERTIFICATE_RETURNED                    178
#define SSL_R_NO_CERTIFICATE_SET                         179
#define SSL_R_NO_CERTIFICATE_SPECIFIED                   180
#define SSL_R_NO_CIPHERS_AVAILABLE                       181
#define SSL_R_NO_CIPHERS_PASSED                          182
#define SSL_R_NO_CIPHERS_SPECIFIED                       183
#define SSL_R_NO_CIPHER_LIST                             184
#define SSL_R_NO_CIPHER_MATCH                            185
#define SSL_R_NO_CLIENT_CERT_METHOD                      331
#define SSL_R_NO_CLIENT_CERT_RECEIVED                    186
#define SSL_R_NO_COMPRESSION_SPECIFIED                   187
#define SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER           330
#define SSL_R_NO_METHOD_SPECIFIED                        188
#define SSL_R_NO_PEM_EXTENSIONS                          389
#define SSL_R_NO_PRIVATEKEY                              189
#define SSL_R_NO_PRIVATE_KEY_ASSIGNED                    190
#define SSL_R_NO_PROTOCOLS_AVAILABLE                     191
#define SSL_R_NO_PUBLICKEY                               192
#define SSL_R_NO_RENEGOTIATION                           339
#define SSL_R_NO_REQUIRED_DIGEST                         324
#define SSL_R_NO_SHARED_CIPHER                           193
#define SSL_R_NO_SHARED_SIGATURE_ALGORITHMS              376
#define SSL_R_NO_SRTP_PROFILES                           359
#define SSL_R_NO_VERIFY_CALLBACK                         194
#define SSL_R_NULL_SSL_CTX                               195
#define SSL_R_NULL_SSL_METHOD_PASSED                     196
#define SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED            197
#define SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED 344
#define SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE       387
#define SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE        379
#define SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE              297
#define SSL_R_OPAQUE_PRF_INPUT_TOO_LONG                  327
#define SSL_R_PACKET_LENGTH_TOO_LONG                     198
#define SSL_R_PARSE_TLSEXT                               227
#define SSL_R_PATH_TOO_LONG                              270
#define SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE          199
#define SSL_R_PEER_ERROR                                 200
#define SSL_R_PEER_ERROR_CERTIFICATE                     201
#define SSL_R_PEER_ERROR_NO_CERTIFICATE                  202
#define SSL_R_PEER_ERROR_NO_CIPHER                       203
#define SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE    204
#define SSL_R_PEM_NAME_BAD_PREFIX                        391
#define SSL_R_PEM_NAME_TOO_SHORT                         392
#define SSL_R_PRE_MAC_LENGTH_TOO_LONG                    205
#define SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS          206
#define SSL_R_PROTOCOL_IS_SHUTDOWN                       207
#define SSL_R_PSK_IDENTITY_NOT_FOUND                     223
#define SSL_R_PSK_NO_CLIENT_CB                           224
#define SSL_R_PSK_NO_SERVER_CB                           225
#define SSL_R_PUBLIC_KEY_ENCRYPT_ERROR                   208
#define SSL_R_PUBLIC_KEY_IS_NOT_RSA                      209
#define SSL_R_PUBLIC_KEY_NOT_RSA                         210
#define SSL_R_READ_BIO_NOT_SET                           211
#define SSL_R_READ_TIMEOUT_EXPIRED                       312
#define SSL_R_READ_WRONG_PACKET_TYPE                     212
#define SSL_R_RECORD_LENGTH_MISMATCH                     213
#define SSL_R_RECORD_TOO_LARGE                           214
#define SSL_R_RECORD_TOO_SMALL                           298
#define SSL_R_RENEGOTIATE_EXT_TOO_LONG                   335
#define SSL_R_RENEGOTIATION_ENCODING_ERR                 336
#define SSL_R_RENEGOTIATION_MISMATCH                     337
#define SSL_R_REQUIRED_CIPHER_MISSING                    215
#define SSL_R_REQUIRED_COMPRESSSION_ALGORITHM_MISSING    342
#define SSL_R_REUSE_CERT_LENGTH_NOT_ZERO                 216
#define SSL_R_REUSE_CERT_TYPE_NOT_ZERO                   217
#define SSL_R_REUSE_CIPHER_LIST_NOT_ZERO                 218
#define SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING           345
#define SSL_R_SERVERHELLO_TLSEXT                         275
#define SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED           277
#define SSL_R_SHORT_READ                                 219
#define SSL_R_SIGNATURE_ALGORITHMS_ERROR                 360
#define SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE      220
#define SSL_R_SRP_A_CALC                                 361
#define SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES           362
#define SSL_R_SRTP_PROTECTION_PROFILE_LIST_TOO_LONG      363
#define SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE            364
#define SSL_R_SSL23_DOING_SESSION_ID_REUSE               221
#define SSL_R_SSL2_CONNECTION_ID_TOO_LONG                299
#define SSL_R_SSL3_EXT_INVALID_ECPOINTFORMAT             321
#define SSL_R_SSL3_EXT_INVALID_SERVERNAME                319
#define SSL_R_SSL3_EXT_INVALID_SERVERNAME_TYPE           320
#define SSL_R_SSL3_SESSION_ID_TOO_LONG                   300
#define SSL_R_SSL3_SESSION_ID_TOO_SHORT                  222
#define SSL_R_SSLV3_ALERT_BAD_CERTIFICATE                1042
#define SSL_R_SSLV3_ALERT_BAD_RECORD_MAC                 1020
#define SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED            1045
#define SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED            1044
#define SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN            1046
#define SSL_R_SSLV3_ALERT_DECOMPRESSION_FAILURE          1030
#define SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE              1040
#define SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER              1047
#define SSL_R_SSLV3_ALERT_NO_CERTIFICATE                 1041
#define SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE             1010
#define SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE        1043
#define SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION         228
#define SSL_R_SSL_HANDSHAKE_FAILURE                      229
#define SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS                 230
#define SSL_R_SSL_SESSION_ID_CALLBACK_FAILED             301
#define SSL_R_SSL_SESSION_ID_CONFLICT                    302
#define SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG            273
#define SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH              303
#define SSL_R_SSL_SESSION_ID_IS_DIFFERENT                231
#define SSL_R_TLSV1_ALERT_ACCESS_DENIED                  1049
#define SSL_R_TLSV1_ALERT_DECODE_ERROR                   1050
#define SSL_R_TLSV1_ALERT_DECRYPTION_FAILED              1021
#define SSL_R_TLSV1_ALERT_DECRYPT_ERROR                  1051
#define SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION             1060
#define SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY          1071
#define SSL_R_TLSV1_ALERT_INTERNAL_ERROR                 1080
#define SSL_R_TLSV1_ALERT_NO_RENEGOTIATION               1100
#define SSL_R_TLSV1_ALERT_PROTOCOL_VERSION               1070
#define SSL_R_TLSV1_ALERT_RECORD_OVERFLOW                1022
#define SSL_R_TLSV1_ALERT_UNKNOWN_CA                     1048
#define SSL_R_TLSV1_ALERT_USER_CANCELLED                 1090
#define SSL_R_TLSV1_BAD_CERTIFICATE_HASH_VALUE           1114
#define SSL_R_TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE      1113
#define SSL_R_TLSV1_CERTIFICATE_UNOBTAINABLE             1111
#define SSL_R_TLSV1_UNRECOGNIZED_NAME                    1112
#define SSL_R_TLSV1_UNSUPPORTED_EXTENSION                1110
#define SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER       232
#define SSL_R_TLS_HEARTBEAT_PEER_DOESNT_ACCEPT           365
#define SSL_R_TLS_HEARTBEAT_PENDING                      366
#define SSL_R_TLS_ILLEGAL_EXPORTER_LABEL                 367
#define SSL_R_TLS_INVALID_ECPOINTFORMAT_LIST             157
#define SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST 233
#define SSL_R_TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG    234
#define SSL_R_TOO_MANY_EMPTY_FRAGMENTS                   388
#define SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER            235
#define SSL_R_UNABLE_TO_DECODE_DH_CERTS                  236
#define SSL_R_UNABLE_TO_DECODE_ECDH_CERTS                313
#define SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY               237
#define SSL_R_UNABLE_TO_FIND_DH_PARAMETERS               238
#define SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS             314
#define SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS       239
#define SSL_R_UNABLE_TO_FIND_SSL_METHOD                  240
#define SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES           241
#define SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES           242
#define SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES          243
#define SSL_R_UNEXPECTED_MESSAGE                         244
#define SSL_R_UNEXPECTED_RECORD                          245
#define SSL_R_UNINITIALIZED                              276
#define SSL_R_UNKNOWN_ALERT_TYPE                         246
#define SSL_R_UNKNOWN_CERTIFICATE_TYPE                   247
#define SSL_R_UNKNOWN_CIPHER_RETURNED                    248
#define SSL_R_UNKNOWN_CIPHER_TYPE                        249
#define SSL_R_UNKNOWN_CMD_NAME                           386
#define SSL_R_UNKNOWN_DIGEST                             368
#define SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE                  250
#define SSL_R_UNKNOWN_PKEY_TYPE                          251
#define SSL_R_UNKNOWN_PROTOCOL                           252
#define SSL_R_UNKNOWN_REMOTE_ERROR_TYPE                  253
#define SSL_R_UNKNOWN_SSL_VERSION                        254
#define SSL_R_UNKNOWN_STATE                              255
#define SSL_R_UNKNOWN_SUPPLEMENTAL_DATA_TYPE             373
#define SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED       338
#define SSL_R_UNSUPPORTED_CIPHER                         256
#define SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM          257
#define SSL_R_UNSUPPORTED_DIGEST_TYPE                    326
#define SSL_R_UNSUPPORTED_ELLIPTIC_CURVE                 315
#define SSL_R_UNSUPPORTED_PROTOCOL                       258
#define SSL_R_UNSUPPORTED_SSL_VERSION                    259
#define SSL_R_UNSUPPORTED_STATUS_TYPE                    329
#define SSL_R_USE_SRTP_NOT_NEGOTIATED                    369
#define SSL_R_WRITE_BIO_NOT_SET                          260
#define SSL_R_WRONG_CERTIFICATE_TYPE                     383
#define SSL_R_WRONG_CIPHER_RETURNED                      261
#define SSL_R_WRONG_CURVE                                378
#define SSL_R_WRONG_MESSAGE_TYPE                         262
#define SSL_R_WRONG_NUMBER_OF_KEY_BITS                   263
#define SSL_R_WRONG_SIGNATURE_LENGTH                     264
#define SSL_R_WRONG_SIGNATURE_SIZE                       265
#define SSL_R_WRONG_SIGNATURE_TYPE                       370
#define SSL_R_WRONG_SSL_VERSION                          266
#define SSL_R_WRONG_VERSION_NUMBER                       267
#define SSL_R_X509_LIB                                   268
#define SSL_R_X509_VERIFICATION_SETUP_PROBLEMS           269

#ifdef  __cplusplus
}
#endif
#endif