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" /* no such ciphersuites supported! */
#define SSL_TXT_kDHd        "kDHd" /* no such ciphersuites supported! */
#define SSL_TXT_kDH         "kDH"  /* no such ciphersuites supported! */
#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" /* no such ciphersuites supported! */
#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_aSRP            "aSRP"

#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;

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_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_TLSEXT_PADDING               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

/* Hasn't done anything since OpenSSL 0.9.7h, retained for compatibility */
#define SSL_OP_MSIE_SSLV2_RSA_PADDING           0x0
/* Refers to ancient SSLREF and SSLv2, retained for compatibility */
#define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG      0x0

/* 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

/* 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
/* Send the current time in the Random fields of the ClientHello and
 * ServerHello records for compatibility with hypothetical implementations
 * that require it.
 */
#define SSL_MODE_SEND_CLIENTHELLO_TIME 0x00000020L
#define SSL_MODE_SEND_SERVERHELLO_TIME 0x00000040L
/* Send TLS_FALLBACK_SCSV in the ClientHello.
 * To be set by applications that reconnect with a downgraded protocol
 * version; see draft-ietf-tls-downgrade-scsv-00 for details. */
#define SSL_MODE_SEND_FALLBACK_SCSV 0x00000080L

/* 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

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_NO_ENGINE
    /* Engine to pass requests for client certs to
     */
    ENGINE *client_cert_engine;
#endif

#ifndef OPENSSL_NO_TLSEXT
    /* TLS extensions servername callback */
    int (*tlsext_servername_callback)(SSL*, int *, void *);
    void *tlsext_servername_arg;
    /* RFC 4507 session ticket keys */
    unsigned char tlsext_tick_key_name[16];
    unsigned char tlsext_tick_hmac_key[16];
    unsigned char tlsext_tick_aes_key[16];
    /* Callback to support customisation of ticket key setting */
    int (*tlsext_ticket_key_cb)(SSL *ssl,
                    unsigned char *name, unsigned char *iv,
                    EVP_CIPHER_CTX *ectx,
                    HMAC_CTX *hctx, int enc);

    /* certificate status request info */
    /* Callback for status request */
    int (*tlsext_status_cb)(SSL *ssl, void *arg);
    void *tlsext_status_arg;

    /* 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
        /* SRTP profiles we are willing to do from RFC 5764 */
        STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;  
#endif
    };

#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

#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

#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 */
#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
    };

#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_AD_INAPPROPRIATE_FALLBACK   TLS1_AD_INAPPROPRIATE_FALLBACK /* 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

#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_GET_EXTRA_CHAIN_CERTS      82
#define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS    83

#define SSL_CTRL_CHECK_PROTO_VERSION        119

#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)

#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);
#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_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);
#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_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 */

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

/* 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_set_debug(SSL *s, int debug);
int SSL_cache_hit(SSL *s);

#ifndef OPENSSL_NO_UNIT_TEST
const struct openssl_ssl_test_functions *SSL_test_functions(void);
#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_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            316
#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_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_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_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_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_SEND_CERT           182
#define SSL_F_SSL_GET_SERVER_SEND_PKEY           317
#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_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_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_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_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_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_PARAMETERS             371
#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_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_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_INAPPROPRIATE_FALLBACK             373
#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_PURPOSE                278
#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_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_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_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_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_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_INAPPROPRIATE_FALLBACK     1086
#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_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_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_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_CIPHER_RETURNED          261
#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