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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) 1998-2001 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 (c) 1998-2006 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 * ECC cipher suite support in OpenSSL originally developed by 
 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 */

#ifndef HEADER_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_LOW           "LOW"
#define SSL_TXT_MEDIUM        "MEDIUM"
#define SSL_TXT_HIGH          "HIGH"
#define SSL_TXT_FIPS          "FIPS"
#define SSL_TXT_kFZA          "kFZA"
#define     SSL_TXT_aFZA            "aFZA"
#define SSL_TXT_eFZA          "eFZA"
#define SSL_TXT_FZA           "FZA"

#define     SSL_TXT_aNULL           "aNULL"
#define     SSL_TXT_eNULL           "eNULL"
#define     SSL_TXT_NULL            "NULL"

#define SSL_TXT_kKRB5         "kKRB5"
#define SSL_TXT_aKRB5         "aKRB5"
#define SSL_TXT_KRB5          "KRB5"

#define SSL_TXT_kRSA          "kRSA"
#define SSL_TXT_kDHr          "kDHr"
#define SSL_TXT_kDHd          "kDHd"
#define SSL_TXT_kEDH          "kEDH"
#define     SSL_TXT_aRSA            "aRSA"
#define     SSL_TXT_aDSS            "aDSS"
#define     SSL_TXT_aDH       "aDH"
#define     SSL_TXT_DSS       "DSS"
#define SSL_TXT_DH            "DH"
#define SSL_TXT_EDH           "EDH"
#define SSL_TXT_ADH           "ADH"
#define SSL_TXT_RSA           "RSA"
#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_AES           "AES"
#define SSL_TXT_CAMELLIA      "CAMELLIA"
#define SSL_TXT_MD5           "MD5"
#define SSL_TXT_SHA1          "SHA1"
#define SSL_TXT_SHA           "SHA"
#define SSL_TXT_EXP           "EXP"
#define SSL_TXT_EXPORT        "EXPORT"
#define SSL_TXT_EXP40         "EXPORT40"
#define SSL_TXT_EXP56         "EXPORT56"
#define SSL_TXT_SSLV2         "SSLv2"
#define SSL_TXT_SSLV3         "SSLv3"
#define SSL_TXT_TLSV1         "TLSv1"
#define SSL_TXT_ALL           "ALL"
#define SSL_TXT_ECC           "ECCdraft" /* ECC ciphersuites are not yet official */

/*
 * 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     "AES:ALL:!aNULL:!eNULL:+RC4:@STRENGTH" /* low priority for RC4 */

/* 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;

/* used to hold info on the particular ciphers used */
00349 typedef struct ssl_cipher_st
      {
      int valid;
      const char *name;       /* text name */
      unsigned long id;       /* id, 4 bytes, first is version */
      unsigned long algorithms;     /* what ciphers are used */
      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 */
      unsigned long mask;           /* used for matching */
      unsigned long mask_strength;  /* also used for matching */
      } SSL_CIPHER;

DECLARE_STACK_OF(SSL_CIPHER)

/* Used to hold functions for SSLv2 or SSLv3/TLSv1 functions */
00366 typedef 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);
      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);
      SSL_CIPHER *(*get_cipher)(unsigned ncipher);
      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));
      } SSL_METHOD;

/* 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'
 *    Compression [6] IMPLICIT ASN1_OBJECT      -- compression OID XXXXX
 *    }
 * Look in ssl/ssl_asn1.c for more details
 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
 */
00420 typedef 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 */

      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;

      int compress_meth;            /* Need to lookup the method */

      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;
      /* 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
      } SSL_SESSION;


#define SSL_OP_MICROSOFT_SESS_ID_BUG                  0x00000001L
#define SSL_OP_NETSCAPE_CHALLENGE_BUG                 0x00000002L
/* Allow initial connection to servers that don't support RI */
#define SSL_OP_LEGACY_SERVER_CONNECT                  0x00000004L
#define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG       0x00000008L
#define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG            0x00000010L
#define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER       0x00000020L
#define SSL_OP_MSIE_SSLV2_RSA_PADDING                 0x00000040L /* no effect since 0.9.7h and 0.9.8b */
#define SSL_OP_SSLEAY_080_CLIENT_DH_BUG               0x00000080L
#define SSL_OP_TLS_D5_BUG                       0x00000100L
#define SSL_OP_TLS_BLOCK_PADDING_BUG                  0x00000200L

/* Disable SSL 3.0/TLS 1.0 CBC vulnerability workaround that was added
 * in OpenSSL 0.9.6d.  Usually (depending on the application protocol)
 * the workaround is not needed.  Unfortunately some broken SSL/TLS
 * implementations cannot handle it at all, which is why we include
 * it in SSL_OP_ALL. */
#define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS              0x00000800L /* added in 0.9.6e */

/* SSL_OP_ALL: various bug workarounds that should be rather harmless.
 *             This used to be 0x000FFFFFL before 0.9.7. */
#define SSL_OP_ALL                              0x00000FFFL

/* 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
/* 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

/* The next flag deliberately changes the ciphertest, this is a check
 * for the PKCS#1 attack */
#define SSL_OP_PKCS1_CHECK_1                    0x08000000L
#define SSL_OP_PKCS1_CHECK_2                    0x10000000L
#define SSL_OP_NETSCAPE_CA_DN_BUG               0x20000000L
#define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG        0x40000000L


/* 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


/* 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)

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))



#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);

00630 typedef struct ssl_comp_st
      {
      int id;
      const char *name;
#ifndef OPENSSL_NO_COMP
      COMP_METHOD *method;
#else
      char *method;
#endif
      } SSL_COMP;

DECLARE_STACK_OF(SSL_COMP)

00643 struct ssl_ctx_st
      {
      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;
      struct lhash_st /* LHASH */ *sessions;    /* a set of SSL_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;

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

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

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

  struct lhash_st *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));

#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)

00869 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 */

      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;/* 1 if we are to use a new session.
                       * 2 if we are a server and are inside a handshake
                       *   (i.e. not just sending a HelloRequest)
                       * 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 */

      EVP_CIPHER_CTX *enc_read_ctx;       /* cryptographic state */
      const EVP_MD *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 */
      const EVP_MD *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 */

      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 */
#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;
      SSL_CTX * initial_ctx; /* initial ctx, used to store sessions */
#define session_ctx initial_ctx
#else
#define session_ctx ctx
#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>

#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))

#if 1 /*SSLEAY_MACROS*/
#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)
#define PEM_read_SSL_SESSION(fp,x,cb,u) (SSL_SESSION *)PEM_ASN1_read( \
      (char *(*)())d2i_SSL_SESSION,PEM_STRING_SSL_SESSION,fp,(char **)x,cb,u)
#define PEM_read_bio_SSL_SESSION(bp,x,cb,u) PEM_ASN1_read_bio_of(SSL_SESSION,d2i_SSL_SESSION,PEM_STRING_SSL_SESSION,bp,x,cb,u)
#define PEM_write_SSL_SESSION(fp,x) \
      PEM_ASN1_write((int (*)())i2d_SSL_SESSION, \
            PEM_STRING_SSL_SESSION,fp, (char *)x, NULL,NULL,0,NULL,NULL)
#define PEM_write_bio_SSL_SESSION(bp,x) \
      PEM_ASN1_write_bio_of(SSL_SESSION,i2d_SSL_SESSION,PEM_STRING_SSL_SESSION,bp,x,NULL,NULL,0,NULL,NULL)
#endif

#define SSL_AD_REASON_OFFSET        1000
/* 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_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

/* 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_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
#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 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)

#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(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);

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);

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);

SSL_SESSION *SSL_SESSION_new(void);
unsigned long SSL_SESSION_hash(const SSL_SESSION *a);
int   SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b);
const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len);
#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);

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,SSL_METHOD *meth);

SSL_METHOD *SSLv2_method(void);           /* SSLv2 */
SSL_METHOD *SSLv2_server_method(void);    /* SSLv2 */
SSL_METHOD *SSLv2_client_method(void);    /* SSLv2 */

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

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

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

SSL_METHOD *DTLSv1_method(void);          /* DTLSv1.0 */
SSL_METHOD *DTLSv1_server_method(void);   /* DTLSv1.0 */
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_pending(SSL *s);
int SSL_shutdown(SSL *s);

SSL_METHOD *SSL_get_ssl_method(SSL *s);
int SSL_set_ssl_method(SSL *s,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_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)

     /* 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

/* 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              280
#define SSL_F_DTLS1_BUFFER_RECORD                247
#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               282
#define SSL_F_DTLS1_OUTPUT_CERT_CHAIN                  255
#define SSL_F_DTLS1_PREPROCESS_FRAGMENT                277
#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               281
#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_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_DO_CHANGE_CIPHER_SPEC         279
#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               288
#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_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_NEW_SESSION_TICKET                  284
#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_BUFFERS                 156
#define SSL_F_SSL3_SETUP_KEY_BLOCK               157
#define SSL_F_SSL3_WRITE_BYTES                         158
#define SSL_F_SSL3_WRITE_PENDING                 159
#define SSL_F_SSL_ADD_CLIENTHELLO_RENEGOTIATE_EXT      285
#define SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT         272
#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      286
#define SSL_F_SSL_ADD_SERVERHELLO_TLSEXT         273
#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             274
#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_NEW                        169
#define SSL_F_SSL_CTX_SET_CIPHER_LIST                  269
#define SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE           278
#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_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_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    287
#define SSL_F_SSL_PARSE_CLIENTHELLO_TLSEXT             290
#define SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT    289
#define SSL_F_SSL_PARSE_SERVERHELLO_TLSEXT             291
#define SSL_F_SSL_PEEK                           270
#define SSL_F_SSL_PREPARE_CLIENTHELLO_TLSEXT           275
#define SSL_F_SSL_PREPARE_SERVERHELLO_TLSEXT           276
#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_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_TRUST                      228
#define SSL_F_SSL_SET_WFD                        196
#define SSL_F_SSL_SHUTDOWN                       224
#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_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_CHANGE_CIPHER_STATE                 209
#define SSL_F_TLS1_ENC                           210
#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_HELLO_REQUEST                        105
#define SSL_R_BAD_LENGTH                         271
#define SSL_R_BAD_MAC_DECODE                     113
#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_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_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                 157
#define SSL_R_COMPRESSED_LENGTH_TOO_LONG         140
#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               318
#define SSL_R_DUPLICATE_COMPRESSION_ID                 309
#define SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER             310
#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_HTTPS_PROXY_REQUEST                155
#define SSL_R_HTTP_REQUEST                       156
#define SSL_R_ILLEGAL_PADDING                    283
#define SSL_R_INVALID_CHALLENGE_LENGTH                 158
#define SSL_R_INVALID_COMMAND                    280
#define SSL_R_INVALID_PURPOSE                    278
#define SSL_R_INVALID_STATUS_RESPONSE                  316
#define SSL_R_INVALID_TICKET_KEYS_LENGTH         275
#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_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_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              317
#define SSL_R_NO_CLIENT_CERT_RECEIVED                  186
#define SSL_R_NO_COMPRESSION_SPECIFIED                 187
#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                         319
#define SSL_R_NO_SHARED_CIPHER                         193
#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_ONLY_TLS_ALLOWED_IN_FIPS_MODE            297
#define SSL_R_PACKET_LENGTH_TOO_LONG                   198
#define SSL_R_PARSE_TLSEXT                       223
#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_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                 320
#define SSL_R_RENEGOTIATION_ENCODING_ERR         321
#define SSL_R_RENEGOTIATION_MISMATCH                   322
#define SSL_R_REQUIRED_CIPHER_MISSING                  215
#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         324
#define SSL_R_SERVERHELLO_TLSEXT                 224
#define SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED         277
#define SSL_R_SHORT_READ                         219
#define SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE    220
#define SSL_R_SSL23_DOING_SESSION_ID_REUSE             221
#define SSL_R_SSL2_CONNECTION_ID_TOO_LONG        299
#define SSL_R_SSL3_EXT_INVALID_SERVERNAME        225
#define SSL_R_SSL3_EXT_INVALID_SERVERNAME_TYPE         226
#define SSL_R_SSL3_SESSION_ID_TOO_LONG                 300
#define SSL_R_SSL3_SESSION_ID_TOO_SHORT                222
#define SSL_R_SSLV3_ALERT_BAD_CERTIFICATE        1042
#define SSL_R_SSLV3_ALERT_BAD_RECORD_MAC         1020
#define SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED          1045
#define SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED          1044
#define SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN          1046
#define SSL_R_SSLV3_ALERT_DECOMPRESSION_FAILURE        1030
#define SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE            1040
#define SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER            1047
#define SSL_R_SSLV3_ALERT_NO_CERTIFICATE         1041
#define SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE           1010
#define SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE      1043
#define SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION       228
#define SSL_R_SSL_HANDSHAKE_FAILURE              229
#define SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS         230
#define SSL_R_SSL_SESSION_ID_CALLBACK_FAILED           301
#define SSL_R_SSL_SESSION_ID_CONFLICT                  302
#define SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG          273
#define SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH            303
#define SSL_R_SSL_SESSION_ID_IS_DIFFERENT        231
#define SSL_R_TLSV1_ALERT_ACCESS_DENIED                1049
#define SSL_R_TLSV1_ALERT_DECODE_ERROR                 1050
#define SSL_R_TLSV1_ALERT_DECRYPTION_FAILED            1021
#define SSL_R_TLSV1_ALERT_DECRYPT_ERROR                1051
#define SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION           1060
#define SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY        1071
#define SSL_R_TLSV1_ALERT_INTERNAL_ERROR         1080
#define SSL_R_TLSV1_ALERT_NO_RENEGOTIATION             1100
#define SSL_R_TLSV1_ALERT_PROTOCOL_VERSION             1070
#define SSL_R_TLSV1_ALERT_RECORD_OVERFLOW        1022
#define SSL_R_TLSV1_ALERT_UNKNOWN_CA                   1048
#define SSL_R_TLSV1_ALERT_USER_CANCELLED         1090
#define SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER     232
#define SSL_R_TLS_INVALID_ECPOINTFORMAT_LIST           227
#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_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     323
#define SSL_R_UNSUPPORTED_CIPHER                 256
#define SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM        257
#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_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_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

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