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File Content: `ssl.h`

/* ssl/ssl.h */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */
/* ====================================================================
 * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 * ECC cipher suite support in OpenSSL originally developed by
 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 */
/* ====================================================================
 * Copyright 2005 Nokia. All rights reserved.
 *
 * The portions of the attached software ("Contribution") is developed by
 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
 * license.
 *
 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
 * support (see RFC 4279) to OpenSSL.
 *
 * No patent licenses or other rights except those expressly stated in
 * the OpenSSL open source license shall be deemed granted or received
 * expressly, by implication, estoppel, or otherwise.
 *
 * No assurances are provided by Nokia that the Contribution does not
 * infringe the patent or other intellectual property rights of any third
 * party or that the license provides you with all the necessary rights
 * to make use of the Contribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
 * OTHERWISE.
 */

#ifndef HEADER_SSL_H
# define HEADER_SSL_H

# include <openssl/e_os2.h>

# ifndef OPENSSL_NO_COMP
#  include <openssl/comp.h>
# endif
# ifndef OPENSSL_NO_BIO
#  include <openssl/bio.h>
# endif
# ifndef OPENSSL_NO_DEPRECATED
#  ifndef OPENSSL_NO_X509
#   include <openssl/x509.h>
#  endif
#  include <openssl/crypto.h>
#  include <openssl/lhash.h>
#  include <openssl/buffer.h>
# endif
# include <openssl/pem.h>
# include <openssl/hmac.h>

# include <openssl/kssl.h>
# include <openssl/safestack.h>
# include <openssl/symhacks.h>

#ifdef  __cplusplus
extern "C" {
#endif

/* SSLeay version number for ASN.1 encoding of the session information */
/*-
 * Version 0 - initial version
 * Version 1 - added the optional peer certificate
 */
# define SSL_SESSION_ASN1_VERSION 0x0001

/* text strings for the ciphers */
# define SSL_TXT_NULL_WITH_MD5           SSL2_TXT_NULL_WITH_MD5
# define SSL_TXT_RC4_128_WITH_MD5        SSL2_TXT_RC4_128_WITH_MD5
# define SSL_TXT_RC4_128_EXPORT40_WITH_MD5 SSL2_TXT_RC4_128_EXPORT40_WITH_MD5
# define SSL_TXT_RC2_128_CBC_WITH_MD5    SSL2_TXT_RC2_128_CBC_WITH_MD5
# define SSL_TXT_RC2_128_CBC_EXPORT40_WITH_MD5 SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5
# define SSL_TXT_IDEA_128_CBC_WITH_MD5   SSL2_TXT_IDEA_128_CBC_WITH_MD5
# define SSL_TXT_DES_64_CBC_WITH_MD5     SSL2_TXT_DES_64_CBC_WITH_MD5
# define SSL_TXT_DES_64_CBC_WITH_SHA     SSL2_TXT_DES_64_CBC_WITH_SHA
# define SSL_TXT_DES_192_EDE3_CBC_WITH_MD5 SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5
# define SSL_TXT_DES_192_EDE3_CBC_WITH_SHA SSL2_TXT_DES_192_EDE3_CBC_WITH_SHA

/*
 * VRS Additional Kerberos5 entries
 */
# define SSL_TXT_KRB5_DES_64_CBC_SHA   SSL3_TXT_KRB5_DES_64_CBC_SHA
# define SSL_TXT_KRB5_DES_192_CBC3_SHA SSL3_TXT_KRB5_DES_192_CBC3_SHA
# define SSL_TXT_KRB5_RC4_128_SHA      SSL3_TXT_KRB5_RC4_128_SHA
# define SSL_TXT_KRB5_IDEA_128_CBC_SHA SSL3_TXT_KRB5_IDEA_128_CBC_SHA
# define SSL_TXT_KRB5_DES_64_CBC_MD5   SSL3_TXT_KRB5_DES_64_CBC_MD5
# define SSL_TXT_KRB5_DES_192_CBC3_MD5 SSL3_TXT_KRB5_DES_192_CBC3_MD5
# define SSL_TXT_KRB5_RC4_128_MD5      SSL3_TXT_KRB5_RC4_128_MD5
# define SSL_TXT_KRB5_IDEA_128_CBC_MD5 SSL3_TXT_KRB5_IDEA_128_CBC_MD5

# define SSL_TXT_KRB5_DES_40_CBC_SHA   SSL3_TXT_KRB5_DES_40_CBC_SHA
# define SSL_TXT_KRB5_RC2_40_CBC_SHA   SSL3_TXT_KRB5_RC2_40_CBC_SHA
# define SSL_TXT_KRB5_RC4_40_SHA       SSL3_TXT_KRB5_RC4_40_SHA
# define SSL_TXT_KRB5_DES_40_CBC_MD5   SSL3_TXT_KRB5_DES_40_CBC_MD5
# define SSL_TXT_KRB5_RC2_40_CBC_MD5   SSL3_TXT_KRB5_RC2_40_CBC_MD5
# define SSL_TXT_KRB5_RC4_40_MD5       SSL3_TXT_KRB5_RC4_40_MD5

# define SSL_TXT_KRB5_DES_40_CBC_SHA   SSL3_TXT_KRB5_DES_40_CBC_SHA
# define SSL_TXT_KRB5_DES_40_CBC_MD5   SSL3_TXT_KRB5_DES_40_CBC_MD5
# define SSL_TXT_KRB5_DES_64_CBC_SHA   SSL3_TXT_KRB5_DES_64_CBC_SHA
# define SSL_TXT_KRB5_DES_64_CBC_MD5   SSL3_TXT_KRB5_DES_64_CBC_MD5
# define SSL_TXT_KRB5_DES_192_CBC3_SHA SSL3_TXT_KRB5_DES_192_CBC3_SHA
# define SSL_TXT_KRB5_DES_192_CBC3_MD5 SSL3_TXT_KRB5_DES_192_CBC3_MD5
# define SSL_MAX_KRB5_PRINCIPAL_LENGTH  256

# define SSL_MAX_SSL_SESSION_ID_LENGTH           32
# define SSL_MAX_SID_CTX_LENGTH                  32

# define SSL_MIN_RSA_MODULUS_LENGTH_IN_BYTES     (512/8)
# define SSL_MAX_KEY_ARG_LENGTH                  8
# define SSL_MAX_MASTER_KEY_LENGTH               48

/* These are used to specify which ciphers to use and not to use */

# define SSL_TXT_EXP40           "EXPORT40"
# define SSL_TXT_EXP56           "EXPORT56"
# define SSL_TXT_LOW             "LOW"
# define SSL_TXT_MEDIUM          "MEDIUM"
# define SSL_TXT_HIGH            "HIGH"
# define SSL_TXT_FIPS            "FIPS"

# define SSL_TXT_kFZA            "kFZA"/* unused! */
# define SSL_TXT_aFZA            "aFZA"/* unused! */
# define SSL_TXT_eFZA            "eFZA"/* unused! */
# define SSL_TXT_FZA             "FZA"/* unused! */

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

# define SSL_TXT_kRSA            "kRSA"
# define SSL_TXT_kDHr            "kDHr"
# define SSL_TXT_kDHd            "kDHd"
# define SSL_TXT_kDH             "kDH"
# define SSL_TXT_kEDH            "kEDH"
# define SSL_TXT_kDHE            "kDHE"/* alias for kEDH */
# define SSL_TXT_kKRB5           "kKRB5"
# define SSL_TXT_kECDHr          "kECDHr"
# define SSL_TXT_kECDHe          "kECDHe"
# define SSL_TXT_kECDH           "kECDH"
# define SSL_TXT_kEECDH          "kEECDH"
# define SSL_TXT_kECDHE          "kECDHE"/* alias for kEECDH */
# define SSL_TXT_kPSK            "kPSK"
# define SSL_TXT_kGOST           "kGOST"
# define SSL_TXT_kSRP            "kSRP"

# define SSL_TXT_aRSA            "aRSA"
# define SSL_TXT_aDSS            "aDSS"
# define SSL_TXT_aDH             "aDH"
# define SSL_TXT_aECDH           "aECDH"
# define SSL_TXT_aKRB5           "aKRB5"
# define SSL_TXT_aECDSA          "aECDSA"
# define SSL_TXT_aPSK            "aPSK"
# define SSL_TXT_aGOST94 "aGOST94"
# define SSL_TXT_aGOST01 "aGOST01"
# define SSL_TXT_aGOST  "aGOST"
# define SSL_TXT_aSRP            "aSRP"

# define SSL_TXT_DSS             "DSS"
# define SSL_TXT_DH              "DH"
# define SSL_TXT_EDH             "EDH"/* same as "kEDH:-ADH" */
# define SSL_TXT_DHE             "DHE"/* alias for EDH */
# define SSL_TXT_ADH             "ADH"
# define SSL_TXT_RSA             "RSA"
# define SSL_TXT_ECDH            "ECDH"
# define SSL_TXT_EECDH           "EECDH"/* same as "kEECDH:-AECDH" */
# define SSL_TXT_ECDHE           "ECDHE"/* alias for ECDHE" */
# define SSL_TXT_AECDH           "AECDH"
# define SSL_TXT_ECDSA           "ECDSA"
# define SSL_TXT_KRB5            "KRB5"
# define SSL_TXT_PSK             "PSK"
# define SSL_TXT_SRP             "SRP"

# define SSL_TXT_DES             "DES"
# define SSL_TXT_3DES            "3DES"
# define SSL_TXT_RC4             "RC4"
# define SSL_TXT_RC2             "RC2"
# define SSL_TXT_IDEA            "IDEA"
# define SSL_TXT_SEED            "SEED"
# define SSL_TXT_AES128          "AES128"
# define SSL_TXT_AES256          "AES256"
# define SSL_TXT_AES             "AES"
# define SSL_TXT_AES_GCM         "AESGCM"
# define SSL_TXT_CAMELLIA128     "CAMELLIA128"
# define SSL_TXT_CAMELLIA256     "CAMELLIA256"
# define SSL_TXT_CAMELLIA        "CAMELLIA"

# define SSL_TXT_MD5             "MD5"
# define SSL_TXT_SHA1            "SHA1"
# define SSL_TXT_SHA             "SHA"/* same as "SHA1" */
# define SSL_TXT_GOST94          "GOST94"
# define SSL_TXT_GOST89MAC               "GOST89MAC"
# define SSL_TXT_SHA256          "SHA256"
# define SSL_TXT_SHA384          "SHA384"

# define SSL_TXT_SSLV2           "SSLv2"
# define SSL_TXT_SSLV3           "SSLv3"
# define SSL_TXT_TLSV1           "TLSv1"
# define SSL_TXT_TLSV1_1         "TLSv1.1"
# define SSL_TXT_TLSV1_2         "TLSv1.2"

# define SSL_TXT_EXP             "EXP"
# define SSL_TXT_EXPORT          "EXPORT"

# define SSL_TXT_ALL             "ALL"

/*-
 * COMPLEMENTOF* definitions. These identifiers are used to (de-select)
 * ciphers normally not being used.
 * Example: "RC4" will activate all ciphers using RC4 including ciphers
 * without authentication, which would normally disabled by DEFAULT (due
 * the "!ADH" being part of default). Therefore "RC4:!COMPLEMENTOFDEFAULT"
 * will make sure that it is also disabled in the specific selection.
 * COMPLEMENTOF* identifiers are portable between version, as adjustments
 * to the default cipher setup will also be included here.
 *
 * COMPLEMENTOFDEFAULT does not experience the same special treatment that
 * DEFAULT gets, as only selection is being done and no sorting as needed
 * for DEFAULT.
 */
# define SSL_TXT_CMPALL          "COMPLEMENTOFALL"
# define SSL_TXT_CMPDEF          "COMPLEMENTOFDEFAULT"

/*
 * The following cipher list is used by default. It also is substituted when
 * an application-defined cipher list string starts with 'DEFAULT'.
 */
# define SSL_DEFAULT_CIPHER_LIST "ALL:!EXPORT:!LOW:!aNULL:!eNULL:!SSLv2"
/*
 * As of OpenSSL 1.0.0, ssl_create_cipher_list() in ssl/ssl_ciph.c always
 * starts with a reasonable order, and all we have to do for DEFAULT is
 * throwing out anonymous and unencrypted ciphersuites! (The latter are not
 * actually enabled by ALL, but "ALL:RSA" would enable some of them.)
 */

/* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
# define SSL_SENT_SHUTDOWN       1
# define SSL_RECEIVED_SHUTDOWN   2

#ifdef __cplusplus
}
#endif

#ifdef  __cplusplus
extern "C" {
#endif

# if (defined(OPENSSL_NO_RSA) || defined(OPENSSL_NO_MD5)) && !defined(OPENSSL_NO_SSL2)
#  define OPENSSL_NO_SSL2
# endif

# define SSL_FILETYPE_ASN1       X509_FILETYPE_ASN1
# define SSL_FILETYPE_PEM        X509_FILETYPE_PEM

/*
 * This is needed to stop compilers complaining about the 'struct ssl_st *'
 * function parameters used to prototype callbacks in SSL_CTX.
 */
typedef struct ssl_st *ssl_crock_st;
typedef struct tls_session_ticket_ext_st TLS_SESSION_TICKET_EXT;
typedef struct ssl_method_st SSL_METHOD;
typedef struct ssl_cipher_st SSL_CIPHER;
typedef struct ssl_session_st SSL_SESSION;
typedef struct tls_sigalgs_st TLS_SIGALGS;
typedef struct ssl_conf_ctx_st SSL_CONF_CTX;

DECLARE_STACK_OF(SSL_CIPHER)

/* SRTP protection profiles for use with the use_srtp extension (RFC 5764)*/
typedef struct srtp_protection_profile_st {
    const char *name;
    unsigned long id;
} SRTP_PROTECTION_PROFILE;

DECLARE_STACK_OF(SRTP_PROTECTION_PROFILE)

typedef int (*tls_session_ticket_ext_cb_fn) (SSL *s,
                                             const unsigned char *data,
                                             int len, void *arg);
typedef int (*tls_session_secret_cb_fn) (SSL *s, void *secret,
                                         int *secret_len,
                                         STACK_OF(SSL_CIPHER) *peer_ciphers,
                                         SSL_CIPHER **cipher, void *arg);

# ifndef OPENSSL_NO_TLSEXT

/* Typedefs for handling custom extensions */

typedef int (*custom_ext_add_cb) (SSL *s, unsigned int ext_type,
                                  const unsigned char **out,
                                  size_t *outlen, int *al, void *add_arg);

typedef void (*custom_ext_free_cb) (SSL *s, unsigned int ext_type,
                                    const unsigned char *out, void *add_arg);

typedef int (*custom_ext_parse_cb) (SSL *s, unsigned int ext_type,
                                    const unsigned char *in,
                                    size_t inlen, int *al, void *parse_arg);

# endif

# ifndef OPENSSL_NO_SSL_INTERN

/* used to hold info on the particular ciphers used */
struct ssl_cipher_st {
    int valid;
    const char *name;           /* text name */
    unsigned long id;           /* id, 4 bytes, first is version */
    /*
     * changed in 0.9.9: these four used to be portions of a single value
     * 'algorithms'
     */
    unsigned long algorithm_mkey; /* key exchange algorithm */
    unsigned long algorithm_auth; /* server authentication */
    unsigned long algorithm_enc; /* symmetric encryption */
    unsigned long algorithm_mac; /* symmetric authentication */
    unsigned long algorithm_ssl; /* (major) protocol version */
    unsigned long algo_strength; /* strength and export flags */
    unsigned long algorithm2;   /* Extra flags */
    int strength_bits;          /* Number of bits really used */
    int alg_bits;               /* Number of bits for algorithm */
};

/* Used to hold functions for SSLv2 or SSLv3/TLSv1 functions */
struct ssl_method_st {
    int version;
    int (*ssl_new) (SSL *s);
    void (*ssl_clear) (SSL *s);
    void (*ssl_free) (SSL *s);
    int (*ssl_accept) (SSL *s);
    int (*ssl_connect) (SSL *s);
    int (*ssl_read) (SSL *s, void *buf, int len);
    int (*ssl_peek) (SSL *s, void *buf, int len);
    int (*ssl_write) (SSL *s, const void *buf, int len);
    int (*ssl_shutdown) (SSL *s);
    int (*ssl_renegotiate) (SSL *s);
    int (*ssl_renegotiate_check) (SSL *s);
    long (*ssl_get_message) (SSL *s, int st1, int stn, int mt, long
                             max, int *ok);
    int (*ssl_read_bytes) (SSL *s, int type, unsigned char *buf, int len,
                           int peek);
    int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, int len);
    int (*ssl_dispatch_alert) (SSL *s);
    long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
    long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
    const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
    int (*put_cipher_by_char) (const SSL_CIPHER *cipher, unsigned char *ptr);
    int (*ssl_pending) (const SSL *s);
    int (*num_ciphers) (void);
    const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
    const struct ssl_method_st *(*get_ssl_method) (int version);
    long (*get_timeout) (void);
    struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
    int (*ssl_version) (void);
    long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
    long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
};

/*-
 * Lets make this into an ASN.1 type structure as follows
 * SSL_SESSION_ID ::= SEQUENCE {
 *      version                 INTEGER,        -- structure version number
 *      SSLversion              INTEGER,        -- SSL version number
 *      Cipher                  OCTET STRING,   -- the 3 byte cipher ID
 *      Session_ID              OCTET STRING,   -- the Session ID
 *      Master_key              OCTET STRING,   -- the master key
 *      KRB5_principal          OCTET STRING    -- optional Kerberos principal
 *      Key_Arg [ 0 ] IMPLICIT  OCTET STRING,   -- the optional Key argument
 *      Time [ 1 ] EXPLICIT     INTEGER,        -- optional Start Time
 *      Timeout [ 2 ] EXPLICIT  INTEGER,        -- optional Timeout ins seconds
 *      Peer [ 3 ] EXPLICIT     X509,           -- optional Peer Certificate
 *      Session_ID_context [ 4 ] EXPLICIT OCTET STRING,   -- the Session ID context
 *      Verify_result [ 5 ] EXPLICIT INTEGER,   -- X509_V_... code for `Peer'
 *      HostName [ 6 ] EXPLICIT OCTET STRING,   -- optional HostName from servername TLS extension
 *      PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
 *      PSK_identity [ 8 ] EXPLICIT OCTET STRING,  -- optional PSK identity
 *      Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
 *      Ticket [10]             EXPLICIT OCTET STRING, -- session ticket (clients only)
 *      Compression_meth [11]   EXPLICIT OCTET STRING, -- optional compression method
 *      SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
 *      }
 * Look in ssl/ssl_asn1.c for more details
 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
 */
struct ssl_session_st {
    int ssl_version;            /* what ssl version session info is being
                                 * kept in here? */
    /* only really used in SSLv2 */
    unsigned int key_arg_length;
    unsigned char key_arg[SSL_MAX_KEY_ARG_LENGTH];
    int master_key_length;
    unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];
    /* session_id - valid? */
    unsigned int session_id_length;
    unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
    /*
     * this is used to determine whether the session is being reused in the
     * appropriate context. It is up to the application to set this, via
     * SSL_new
     */
    unsigned int sid_ctx_length;
    unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
#  ifndef OPENSSL_NO_KRB5
    unsigned int krb5_client_princ_len;
    unsigned char krb5_client_princ[SSL_MAX_KRB5_PRINCIPAL_LENGTH];
#  endif                        /* OPENSSL_NO_KRB5 */
#  ifndef OPENSSL_NO_PSK
    char *psk_identity_hint;
    char *psk_identity;
#  endif
    /*
     * Used to indicate that session resumption is not allowed. Applications
     * can also set this bit for a new session via not_resumable_session_cb
     * to disable session caching and tickets.
     */
    int not_resumable;
    /* The cert is the certificate used to establish this connection */
    struct sess_cert_st /* SESS_CERT */ *sess_cert;
    /*
     * This is the cert for the other end. On clients, it will be the same as
     * sess_cert->peer_key->x509 (the latter is not enough as sess_cert is
     * not retained in the external representation of sessions, see
     * ssl_asn1.c).
     */
    X509 *peer;
    /*
     * when app_verify_callback accepts a session where the peer's
     * certificate is not ok, we must remember the error for session reuse:
     */
    long verify_result;         /* only for servers */
    int references;
    long timeout;
    long time;
    unsigned int compress_meth; /* Need to lookup the method */
    const SSL_CIPHER *cipher;
    unsigned long cipher_id;    /* when ASN.1 loaded, this needs to be used
                                 * to load the 'cipher' structure */
    STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */
    CRYPTO_EX_DATA ex_data;     /* application specific data */
    /*
     * These are used to make removal of session-ids more efficient and to
     * implement a maximum cache size.
     */
    struct ssl_session_st *prev, *next;
#  ifndef OPENSSL_NO_TLSEXT
    char *tlsext_hostname;
#   ifndef OPENSSL_NO_EC
    size_t tlsext_ecpointformatlist_length;
    unsigned char *tlsext_ecpointformatlist; /* peer's list */
    size_t tlsext_ellipticcurvelist_length;
    unsigned char *tlsext_ellipticcurvelist; /* peer's list */
#   endif                       /* OPENSSL_NO_EC */
    /* RFC4507 info */
    unsigned char *tlsext_tick; /* Session ticket */
    size_t tlsext_ticklen;      /* Session ticket length */
    long tlsext_tick_lifetime_hint; /* Session lifetime hint in seconds */
#  endif
};

# endif

# define SSL_OP_MICROSOFT_SESS_ID_BUG                    0x00000001L
# define SSL_OP_NETSCAPE_CHALLENGE_BUG                   0x00000002L
/* Allow initial connection to servers that don't support RI */
# define SSL_OP_LEGACY_SERVER_CONNECT                    0x00000004L
# define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG         0x00000008L
# define SSL_OP_TLSEXT_PADDING                           0x00000010L
# define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER               0x00000020L
# define SSL_OP_SAFARI_ECDHE_ECDSA_BUG                   0x00000040L
# define SSL_OP_SSLEAY_080_CLIENT_DH_BUG                 0x00000080L
# define SSL_OP_TLS_D5_BUG                               0x00000100L
# define SSL_OP_TLS_BLOCK_PADDING_BUG                    0x00000200L

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

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

/*
 * SSL_OP_ALL: various bug workarounds that should be rather harmless.  This
 * used to be 0x000FFFFFL before 0.9.7.
 */
# define SSL_OP_ALL                                      0x80000BFFL

/* DTLS options */
# define SSL_OP_NO_QUERY_MTU                 0x00001000L
/* Turn on Cookie Exchange (on relevant for servers) */
# define SSL_OP_COOKIE_EXCHANGE              0x00002000L
/* Don't use RFC4507 ticket extension */
# define SSL_OP_NO_TICKET                    0x00004000L
/* Use Cisco's "speshul" version of DTLS_BAD_VER (as client)  */
# define SSL_OP_CISCO_ANYCONNECT             0x00008000L

/* As server, disallow session resumption on renegotiation */
# define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION   0x00010000L
/* Don't use compression even if supported */
# define SSL_OP_NO_COMPRESSION                           0x00020000L
/* Permit unsafe legacy renegotiation */
# define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION        0x00040000L
/* If set, always create a new key when using tmp_ecdh parameters */
# define SSL_OP_SINGLE_ECDH_USE                          0x00080000L
/* Does nothing: retained for compatibility */
# define SSL_OP_SINGLE_DH_USE                            0x00100000L
/* Does nothing: retained for compatibiity */
# define SSL_OP_EPHEMERAL_RSA                            0x0
/*
 * Set on servers to choose the cipher according to the server's preferences
 */
# define SSL_OP_CIPHER_SERVER_PREFERENCE                 0x00400000L
/*
 * If set, a server will allow a client to issue a SSLv3.0 version number as
 * latest version supported in the premaster secret, even when TLSv1.0
 * (version 3.1) was announced in the client hello. Normally this is
 * forbidden to prevent version rollback attacks.
 */
# define SSL_OP_TLS_ROLLBACK_BUG                         0x00800000L

# define SSL_OP_NO_SSLv2                                 0x01000000L
# define SSL_OP_NO_SSLv3                                 0x02000000L
# define SSL_OP_NO_TLSv1                                 0x04000000L
# define SSL_OP_NO_TLSv1_2                               0x08000000L
# define SSL_OP_NO_TLSv1_1                               0x10000000L

# define SSL_OP_NO_DTLSv1                                0x04000000L
# define SSL_OP_NO_DTLSv1_2                              0x08000000L

# define SSL_OP_NO_SSL_MASK (SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|\
        SSL_OP_NO_TLSv1|SSL_OP_NO_TLSv1_1|SSL_OP_NO_TLSv1_2)

/*
 * These next two were never actually used for anything since SSLeay zap so
 * we have some more flags.
 */
/*
 * The next flag deliberately changes the ciphertest, this is a check for the
 * PKCS#1 attack
 */
# define SSL_OP_PKCS1_CHECK_1                            0x0
# define SSL_OP_PKCS1_CHECK_2                            0x0

# define SSL_OP_NETSCAPE_CA_DN_BUG                       0x20000000L
# define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG          0x40000000L
/*
 * Make server add server-hello extension from early version of cryptopro
 * draft, when GOST ciphersuite is negotiated. Required for interoperability
 * with CryptoPro CSP 3.x
 */
# define SSL_OP_CRYPTOPRO_TLSEXT_BUG                     0x80000000L

/*
 * Allow SSL_write(..., n) to return r with 0 < r < n (i.e. report success
 * when just a single record has been written):
 */
# define SSL_MODE_ENABLE_PARTIAL_WRITE       0x00000001L
/*
 * Make it possible to retry SSL_write() with changed buffer location (buffer
 * contents must stay the same!); this is not the default to avoid the
 * misconception that non-blocking SSL_write() behaves like non-blocking
 * write():
 */
# define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002L
/*
 * Never bother the application with retries if the transport is blocking:
 */
# define SSL_MODE_AUTO_RETRY 0x00000004L
/* Don't attempt to automatically build certificate chain */
# define SSL_MODE_NO_AUTO_CHAIN 0x00000008L
/*
 * Save RAM by releasing read and write buffers when they're empty. (SSL3 and
 * TLS only.) "Released" buffers are put onto a free-list in the context or
 * just freed (depending on the context's setting for freelist_max_len).
 */
# define SSL_MODE_RELEASE_BUFFERS 0x00000010L
/*
 * Send the current time in the Random fields of the ClientHello and
 * ServerHello records for compatibility with hypothetical implementations
 * that require it.
 */
# define SSL_MODE_SEND_CLIENTHELLO_TIME 0x00000020L
# define SSL_MODE_SEND_SERVERHELLO_TIME 0x00000040L
/*
 * Send TLS_FALLBACK_SCSV in the ClientHello. To be set only by applications
 * that reconnect with a downgraded protocol version; see
 * draft-ietf-tls-downgrade-scsv-00 for details. DO NOT ENABLE THIS if your
 * application attempts a normal handshake. Only use this in explicit
 * fallback retries, following the guidance in
 * draft-ietf-tls-downgrade-scsv-00.
 */
# define SSL_MODE_SEND_FALLBACK_SCSV 0x00000080L

/* Cert related flags */
/*
 * Many implementations ignore some aspects of the TLS standards such as
 * enforcing certifcate chain algorithms. When this is set we enforce them.
 */
# define SSL_CERT_FLAG_TLS_STRICT                0x00000001L

/* Suite B modes, takes same values as certificate verify flags */
# define SSL_CERT_FLAG_SUITEB_128_LOS_ONLY       0x10000
/* Suite B 192 bit only mode */
# define SSL_CERT_FLAG_SUITEB_192_LOS            0x20000
/* Suite B 128 bit mode allowing 192 bit algorithms */
# define SSL_CERT_FLAG_SUITEB_128_LOS            0x30000

/* Perform all sorts of protocol violations for testing purposes */
# define SSL_CERT_FLAG_BROKEN_PROTOCOL           0x10000000

/* Flags for building certificate chains */
/* Treat any existing certificates as untrusted CAs */
# define SSL_BUILD_CHAIN_FLAG_UNTRUSTED          0x1
/* Don't include root CA in chain */
# define SSL_BUILD_CHAIN_FLAG_NO_ROOT            0x2
/* Just check certificates already there */
# define SSL_BUILD_CHAIN_FLAG_CHECK              0x4
/* Ignore verification errors */
# define SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR       0x8
/* Clear verification errors from queue */
# define SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR        0x10

/* Flags returned by SSL_check_chain */
/* Certificate can be used with this session */
# define CERT_PKEY_VALID         0x1
/* Certificate can also be used for signing */
# define CERT_PKEY_SIGN          0x2
/* EE certificate signing algorithm OK */
# define CERT_PKEY_EE_SIGNATURE  0x10
/* CA signature algorithms OK */
# define CERT_PKEY_CA_SIGNATURE  0x20
/* EE certificate parameters OK */
# define CERT_PKEY_EE_PARAM      0x40
/* CA certificate parameters OK */
# define CERT_PKEY_CA_PARAM      0x80
/* Signing explicitly allowed as opposed to SHA1 fallback */
# define CERT_PKEY_EXPLICIT_SIGN 0x100
/* Client CA issuer names match (always set for server cert) */
# define CERT_PKEY_ISSUER_NAME   0x200
/* Cert type matches client types (always set for server cert) */
# define CERT_PKEY_CERT_TYPE     0x400
/* Cert chain suitable to Suite B */
# define CERT_PKEY_SUITEB        0x800

# define SSL_CONF_FLAG_CMDLINE           0x1
# define SSL_CONF_FLAG_FILE              0x2
# define SSL_CONF_FLAG_CLIENT            0x4
# define SSL_CONF_FLAG_SERVER            0x8
# define SSL_CONF_FLAG_SHOW_ERRORS       0x10
# define SSL_CONF_FLAG_CERTIFICATE       0x20
/* Configuration value types */
# define SSL_CONF_TYPE_UNKNOWN           0x0
# define SSL_CONF_TYPE_STRING            0x1
# define SSL_CONF_TYPE_FILE              0x2
# define SSL_CONF_TYPE_DIR               0x3

/*
 * 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 DTLS_set_link_mtu(ssl, mtu) \
        SSL_ctrl((ssl),DTLS_CTRL_SET_LINK_MTU,(mtu),NULL)
# define DTLS_get_link_min_mtu(ssl) \
        SSL_ctrl((ssl),DTLS_CTRL_GET_LINK_MIN_MTU,0,NULL)

# define SSL_get_secure_renegotiation_support(ssl) \
        SSL_ctrl((ssl), SSL_CTRL_GET_RI_SUPPORT, 0, NULL)

# ifndef OPENSSL_NO_HEARTBEATS
#  define SSL_heartbeat(ssl) \
        SSL_ctrl((ssl),SSL_CTRL_TLS_EXT_SEND_HEARTBEAT,0,NULL)
# endif

# define SSL_CTX_set_cert_flags(ctx,op) \
        SSL_CTX_ctrl((ctx),SSL_CTRL_CERT_FLAGS,(op),NULL)
# define SSL_set_cert_flags(s,op) \
        SSL_ctrl((s),SSL_CTRL_CERT_FLAGS,(op),NULL)
# define SSL_CTX_clear_cert_flags(ctx,op) \
        SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
# define SSL_clear_cert_flags(s,op) \
        SSL_ctrl((s),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)

void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
                              void (*cb) (int write_p, int version,
                                          int content_type, const void *buf,
                                          size_t len, SSL *ssl, void *arg));
void SSL_set_msg_callback(SSL *ssl,
                          void (*cb) (int write_p, int version,
                                      int content_type, const void *buf,
                                      size_t len, SSL *ssl, void *arg));
# define SSL_CTX_set_msg_callback_arg(ctx, arg) SSL_CTX_ctrl((ctx), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
# define SSL_set_msg_callback_arg(ssl, arg) SSL_ctrl((ssl), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))


# if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32)
#  define SSL_MAX_CERT_LIST_DEFAULT 1024*30
                                          /* 30k max cert list :-) */
# else
#  define SSL_MAX_CERT_LIST_DEFAULT 1024*100
                                           /* 100k max cert list :-) */
# endif

# define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT      (1024*20)

/*
 * This callback type is used inside SSL_CTX, SSL, and in the functions that
 * set them. It is used to override the generation of SSL/TLS session IDs in
 * a server. Return value should be zero on an error, non-zero to proceed.
 * Also, callbacks should themselves check if the id they generate is unique
 * otherwise the SSL handshake will fail with an error - callbacks can do
 * this using the 'ssl' value they're passed by;
 * SSL_has_matching_session_id(ssl, id, *id_len) The length value passed in
 * is set at the maximum size the session ID can be. In SSLv2 this is 16
 * bytes, whereas SSLv3/TLSv1 it is 32 bytes. The callback can alter this
 * length to be less if desired, but under SSLv2 session IDs are supposed to
 * be fixed at 16 bytes so the id will be padded after the callback returns
 * in this case. It is also an error for the callback to set the size to
 * zero.
 */
typedef int (*GEN_SESSION_CB) (const SSL *ssl, unsigned char *id,
                               unsigned int *id_len);

typedef struct ssl_comp_st SSL_COMP;

# ifndef OPENSSL_NO_SSL_INTERN

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

DECLARE_STACK_OF(SSL_COMP)
DECLARE_LHASH_OF(SSL_SESSION);

struct ssl_ctx_st {
    const SSL_METHOD *method;
    STACK_OF(SSL_CIPHER) *cipher_list;
    /* same as above but sorted for lookup */
    STACK_OF(SSL_CIPHER) *cipher_list_by_id;
    struct x509_store_st /* X509_STORE */ *cert_store;
    LHASH_OF(SSL_SESSION) *sessions;
    /*
     * Most session-ids that will be cached, default is
     * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
     */
    unsigned long session_cache_size;
    struct ssl_session_st *session_cache_head;
    struct ssl_session_st *session_cache_tail;
    /*
     * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
     * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
     * means only SSL_accept which cache SSL_SESSIONS.
     */
    int session_cache_mode;
    /*
     * If timeout is not 0, it is the default timeout value set when
     * SSL_new() is called.  This has been put in to make life easier to set
     * things up
     */
    long session_timeout;
    /*
     * If this callback is not null, it will be called each time a session id
     * is added to the cache.  If this function returns 1, it means that the
     * callback will do a SSL_SESSION_free() when it has finished using it.
     * Otherwise, on 0, it means the callback has finished with it. If
     * remove_session_cb is not null, it will be called when a session-id is
     * removed from the cache.  After the call, OpenSSL will
     * SSL_SESSION_free() it.
     */
    int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
    void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
    SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
                                    unsigned char *data, int len, int *copy);
    struct {
        int sess_connect;       /* SSL new conn - started */
        int sess_connect_renegotiate; /* SSL reneg - requested */
        int sess_connect_good;  /* SSL new conne/reneg - finished */
        int sess_accept;        /* SSL new accept - started */
        int sess_accept_renegotiate; /* SSL reneg - requested */
        int sess_accept_good;   /* SSL accept/reneg - finished */
        int sess_miss;          /* session lookup misses */
        int sess_timeout;       /* reuse attempt on timeouted session */
        int sess_cache_full;    /* session removed due to full cache */
        int sess_hit;           /* session reuse actually done */
        int sess_cb_hit;        /* session-id that was not in the cache was
                                 * passed back via the callback.  This
                                 * indicates that the application is
                                 * supplying session-id's from other
                                 * processes - spooky :-) */
    } stats;

    int references;

    /* if defined, these override the X509_verify_cert() calls */
    int (*app_verify_callback) (X509_STORE_CTX *, void *);
    void *app_verify_arg;
    /*
     * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
     * ('app_verify_callback' was called with just one argument)
     */

    /* Default password callback. */
    pem_password_cb *default_passwd_callback;

    /* Default password callback user data. */
    void *default_passwd_callback_userdata;

    /* get client cert callback */
    int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);

    /* cookie generate callback */
    int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
                              unsigned int *cookie_len);

    /* verify cookie callback */
    int (*app_verify_cookie_cb) (SSL *ssl, unsigned char *cookie,
                                 unsigned int cookie_len);

    CRYPTO_EX_DATA ex_data;

    const EVP_MD *rsa_md5;      /* For SSLv2 - name is 'ssl2-md5' */
    const EVP_MD *md5;          /* For SSLv3/TLSv1 'ssl3-md5' */
    const EVP_MD *sha1;         /* For SSLv3/TLSv1 'ssl3->sha1' */

    STACK_OF(X509) *extra_certs;
    STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */

    /* Default values used when no per-SSL value is defined follow */

    /* used if SSL's info_callback is NULL */
    void (*info_callback) (const SSL *ssl, int type, int val);

    /* what we put in client cert requests */
    STACK_OF(X509_NAME) *client_CA;

    /*
     * Default values to use in SSL structures follow (these are copied by
     * SSL_new)
     */

    unsigned long options;
    unsigned long mode;
    long max_cert_list;

    struct cert_st /* CERT */ *cert;
    int read_ahead;

    /* callback that allows applications to peek at protocol messages */
    void (*msg_callback) (int write_p, int version, int content_type,
                          const void *buf, size_t len, SSL *ssl, void *arg);
    void *msg_callback_arg;

    int verify_mode;
    unsigned int sid_ctx_length;
    unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
    /* called 'verify_callback' in the SSL */
    int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);

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

    X509_VERIFY_PARAM *param;

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

    int quiet_shutdown;

    /*
     * Maximum amount of data to send in one fragment. actual record size can
     * be more than this due to padding and MAC overheads.
     */
    unsigned int max_send_fragment;

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

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

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

    /* draft-rescorla-tls-opaque-prf-input-00.txt information */
    int (*tlsext_opaque_prf_input_callback) (SSL *, void *peerinput,
                                             size_t len, void *arg);
    void *tlsext_opaque_prf_input_callback_arg;
#  endif

#  ifndef OPENSSL_NO_PSK
    char *psk_identity_hint;
    unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
                                         char *identity,
                                         unsigned int max_identity_len,
                                         unsigned char *psk,
                                         unsigned int max_psk_len);
    unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
                                         unsigned char *psk,
                                         unsigned int max_psk_len);
#  endif

#  ifndef OPENSSL_NO_BUF_FREELISTS
#   define SSL_MAX_BUF_FREELIST_LEN_DEFAULT 32
    unsigned int freelist_max_len;
    struct ssl3_buf_freelist_st *wbuf_freelist;
    struct ssl3_buf_freelist_st *rbuf_freelist;
#  endif

#  ifndef OPENSSL_NO_TLSEXT

#   ifndef OPENSSL_NO_NEXTPROTONEG
    /* Next protocol negotiation information */
    /* (for experimental NPN extension). */

    /*
     * For a server, this contains a callback function by which the set of
     * advertised protocols can be provided.
     */
    int (*next_protos_advertised_cb) (SSL *s, const unsigned char **buf,
                                      unsigned int *len, void *arg);
    void *next_protos_advertised_cb_arg;
    /*
     * For a client, this contains a callback function that selects the next
     * protocol from the list provided by the server.
     */
    int (*next_proto_select_cb) (SSL *s, unsigned char **out,
                                 unsigned char *outlen,
                                 const unsigned char *in,
                                 unsigned int inlen, void *arg);
    void *next_proto_select_cb_arg;
#   endif
    /* SRTP profiles we are willing to do from RFC 5764 */
    STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;

    /*
     * ALPN information (we are in the process of transitioning from NPN to
     * ALPN.)
     */

    /*-
     * For a server, this contains a callback function that allows the
     * server to select the protocol for the connection.
     *   out: on successful return, this must point to the raw protocol
     *        name (without the length prefix).
     *   outlen: on successful return, this contains the length of |*out|.
     *   in: points to the client's list of supported protocols in
     *       wire-format.
     *   inlen: the length of |in|.
     */
    int (*alpn_select_cb) (SSL *s,
                           const unsigned char **out,
                           unsigned char *outlen,
                           const unsigned char *in,
                           unsigned int inlen, void *arg);
    void *alpn_select_cb_arg;

    /*
     * For a client, this contains the list of supported protocols in wire
     * format.
     */
    unsigned char *alpn_client_proto_list;
    unsigned alpn_client_proto_list_len;

#   ifndef OPENSSL_NO_EC
    /* EC extension values inherited by SSL structure */
    size_t tlsext_ecpointformatlist_length;
    unsigned char *tlsext_ecpointformatlist;
    size_t tlsext_ellipticcurvelist_length;
    unsigned char *tlsext_ellipticcurvelist;
#   endif                       /* OPENSSL_NO_EC */
#  endif
};

# endif

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

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

void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
                             int (*new_session_cb) (struct ssl_st *ssl,
                                                    SSL_SESSION *sess));
int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)) (struct ssl_st *ssl,
                                              SSL_SESSION *sess);
void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
                                void (*remove_session_cb) (struct ssl_ctx_st
                                                           *ctx,
                                                           SSL_SESSION
                                                           *sess));
void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)) (struct ssl_ctx_st *ctx,
                                                  SSL_SESSION *sess);
void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
                             SSL_SESSION *(*get_session_cb) (struct ssl_st
                                                             *ssl,
                                                             unsigned char
                                                             *data, int len,
                                                             int *copy));
SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx)) (struct ssl_st *ssl,
                                                       unsigned char *Data,
                                                       int len, int *copy);
void SSL_CTX_set_info_callback(SSL_CTX *ctx,
                               void (*cb) (const SSL *ssl, int type,
                                           int val));
void (*SSL_CTX_get_info_callback(SSL_CTX *ctx)) (const SSL *ssl, int type,
                                                 int val);
void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
                                int (*client_cert_cb) (SSL *ssl, X509 **x509,
                                                       EVP_PKEY **pkey));
int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx)) (SSL *ssl, X509 **x509,
                                                 EVP_PKEY **pkey);
# ifndef OPENSSL_NO_ENGINE
int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e);
# endif
void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
                                    int (*app_gen_cookie_cb) (SSL *ssl,
                                                              unsigned char
                                                              *cookie,
                                                              unsigned int
                                                              *cookie_len));
void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
                                  int (*app_verify_cookie_cb) (SSL *ssl,
                                                               unsigned char
                                                               *cookie,
                                                               unsigned int
                                                               cookie_len));
# ifndef OPENSSL_NO_NEXTPROTONEG
void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *s,
                                           int (*cb) (SSL *ssl,
                                                      const unsigned char
                                                      **out,
                                                      unsigned int *outlen,
                                                      void *arg), void *arg);
void SSL_CTX_set_next_proto_select_cb(SSL_CTX *s,
                                      int (*cb) (SSL *ssl,
                                                 unsigned char **out,
                                                 unsigned char *outlen,
                                                 const unsigned char *in,
                                                 unsigned int inlen,
                                                 void *arg), void *arg);
void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
                                    unsigned *len);
# endif

# ifndef OPENSSL_NO_TLSEXT
int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
                          const unsigned char *in, unsigned int inlen,
                          const unsigned char *client,
                          unsigned int client_len);
# endif

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

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

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

# ifndef OPENSSL_NO_TLSEXT
/* Register callbacks to handle custom TLS Extensions for client or server. */

int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
                                  custom_ext_add_cb add_cb,
                                  custom_ext_free_cb free_cb,
                                  void *add_arg,
                                  custom_ext_parse_cb parse_cb,
                                  void *parse_arg);

int SSL_CTX_add_server_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
                                  custom_ext_add_cb add_cb,
                                  custom_ext_free_cb free_cb,
                                  void *add_arg,
                                  custom_ext_parse_cb parse_cb,
                                  void *parse_arg);

int SSL_extension_supported(unsigned int ext_type);

# endif

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

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

# define SSL_MAC_FLAG_READ_MAC_STREAM 1
# define SSL_MAC_FLAG_WRITE_MAC_STREAM 2

# ifndef OPENSSL_NO_SSL_INTERN

struct ssl_st {
    /*
     * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
     * DTLS1_VERSION)
     */
    int version;
    /* SSL_ST_CONNECT or SSL_ST_ACCEPT */
    int type;
    /* SSLv3 */
    const SSL_METHOD *method;
    /*
     * There are 2 BIO's even though they are normally both the same.  This
     * is so data can be read and written to different handlers
     */
#  ifndef OPENSSL_NO_BIO
    /* used by SSL_read */
    BIO *rbio;
    /* used by SSL_write */
    BIO *wbio;
    /* used during session-id reuse to concatenate messages */
    BIO *bbio;
#  else
    /* used by SSL_read */
    char *rbio;
    /* used by SSL_write */
    char *wbio;
    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.
     */
    /* are we the server side? - mostly used by SSL_clear */
    int server;
    /*
     * Generate a new session or reuse an old one.
     * NB: For servers, the 'new' session may actually be a previously
     * cached session or even the previous session unless
     * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
     */
    int new_session;
    /* don't send shutdown packets */
    int quiet_shutdown;
    /* we have shut things down, 0x01 sent, 0x02 for received */
    int shutdown;
    /* where we are */
    int state;
    /* where we are when reading */
    int rstate;
    BUF_MEM *init_buf;          /* buffer used during init */
    void *init_msg;             /* pointer to handshake message body, set by
                                 * ssl3_get_message() */
    int init_num;               /* amount read/written */
    int init_off;               /* amount read/written */
    /* used internally to point at a raw packet */
    unsigned char *packet;
    unsigned int packet_length;
    struct ssl2_state_st *s2;   /* SSLv2 variables */
    struct ssl3_state_st *s3;   /* SSLv3 variables */
    struct dtls1_state_st *d1;  /* DTLSv1 variables */
    int read_ahead;             /* Read as many input bytes as possible (for
                                 * non-blocking reads) */
    /* callback that allows applications to peek at protocol messages */
    void (*msg_callback) (int write_p, int version, int content_type,
                          const void *buf, size_t len, SSL *ssl, void *arg);
    void *msg_callback_arg;
    int hit;                    /* reusing a previous session */
    X509_VERIFY_PARAM *param;
#  if 0
    int purpose;                /* Purpose setting */
    int trust;                  /* Trust setting */
#  endif
    /* crypto */
    STACK_OF(SSL_CIPHER) *cipher_list;
    STACK_OF(SSL_CIPHER) *cipher_list_by_id;
    /*
     * These are the ones being used, the ones in SSL_SESSION are the ones to
     * be 'copied' into these ones
     */
    int mac_flags;
    EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
    EVP_MD_CTX *read_hash;      /* used for mac generation */
#  ifndef OPENSSL_NO_COMP
    COMP_CTX *expand;           /* uncompress */
#  else
    char *expand;
#  endif
    EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
    EVP_MD_CTX *write_hash;     /* used for mac generation */
#  ifndef OPENSSL_NO_COMP
    COMP_CTX *compress;         /* compression */
#  else
    char *compress;
#  endif
    /* session info */
    /* client cert? */
    /* This is used to hold the server certificate used */
    struct cert_st /* CERT */ *cert;
    /*
     * the session_id_context is used to ensure sessions are only reused in
     * the appropriate context
     */
    unsigned int sid_ctx_length;
    unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
    /* This can also be in the session once a session is established */
    SSL_SESSION *session;
    /* Default generate session ID callback. */
    GEN_SESSION_CB generate_session_id;
    /* Used in SSL2 and SSL3 */
    /*
     * 0 don't care about verify failure.
     * 1 fail if verify fails
     */
    int verify_mode;
    /* fail if callback returns 0 */
    int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
    /* optional informational callback */
    void (*info_callback) (const SSL *ssl, int type, int val);
    /* error bytes to be written */
    int error;
    /* actual code */
    int error_code;
#  ifndef OPENSSL_NO_KRB5
    /* Kerberos 5 context */
    KSSL_CTX *kssl_ctx;
#  endif                        /* OPENSSL_NO_KRB5 */
#  ifndef OPENSSL_NO_PSK
    unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
                                         char *identity,
                                         unsigned int max_identity_len,
                                         unsigned char *psk,
                                         unsigned int max_psk_len);
    unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
                                         unsigned char *psk,
                                         unsigned int max_psk_len);
#  endif
    SSL_CTX *ctx;
    /*
     * set this flag to 1 and a sleep(1) is put into all SSL_read() and
     * SSL_write() calls, good for nbio debuging :-)
     */
    int debug;
    /* extra application data */
    long verify_result;
    CRYPTO_EX_DATA ex_data;
    /* for server side, keep the list of CA_dn we can use */
    STACK_OF(X509_NAME) *client_CA;
    int references;
    /* protocol behaviour */
    unsigned long options;
    /* API behaviour */
    unsigned long mode;
    long max_cert_list;
    int first_packet;
    /* what was passed, used for SSLv3/TLS rollback check */
    int client_version;
    unsigned int max_send_fragment;
#  ifndef OPENSSL_NO_TLSEXT
    /* TLS extension debug callback */
    void (*tlsext_debug_cb) (SSL *s, int client_server, int type,
                             unsigned char *data, int len, void *arg);
    void *tlsext_debug_arg;
    char *tlsext_hostname;
    /*-
     * no further mod of servername
     * 0 : call the servername extension callback.
     * 1 : prepare 2, allow last ack just after in server callback.
     * 2 : don't call servername callback, no ack in server hello
     */
    int servername_done;
    /* certificate status request info */
    /* Status type or -1 if no status type */
    int tlsext_status_type;
    /* Expect OCSP CertificateStatus message */
    int tlsext_status_expected;
    /* OCSP status request only */
    STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids;
    X509_EXTENSIONS *tlsext_ocsp_exts;
    /* OCSP response received or to be sent */
    unsigned char *tlsext_ocsp_resp;
    int tlsext_ocsp_resplen;
    /* RFC4507 session ticket expected to be received or sent */
    int tlsext_ticket_expected;
#   ifndef OPENSSL_NO_EC
    size_t tlsext_ecpointformatlist_length;
    /* our list */
    unsigned char *tlsext_ecpointformatlist;
    size_t tlsext_ellipticcurvelist_length;
    /* our list */
    unsigned char *tlsext_ellipticcurvelist;
#   endif                       /* OPENSSL_NO_EC */
    /*
     * draft-rescorla-tls-opaque-prf-input-00.txt information to be used for
     * handshakes
     */
    void *tlsext_opaque_prf_input;
    size_t tlsext_opaque_prf_input_len;
    /* TLS Session Ticket extension override */
    TLS_SESSION_TICKET_EXT *tlsext_session_ticket;
    /* TLS Session Ticket extension callback */
    tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb;
    void *tls_session_ticket_ext_cb_arg;
    /* TLS pre-shared secret session resumption */
    tls_session_secret_cb_fn tls_session_secret_cb;
    void *tls_session_secret_cb_arg;
    SSL_CTX *initial_ctx;       /* initial ctx, used to store sessions */
#   ifndef OPENSSL_NO_NEXTPROTONEG
    /*
     * Next protocol negotiation. For the client, this is the protocol that
     * we sent in NextProtocol and is set when handling ServerHello
     * extensions. For a server, this is the client's selected_protocol from
     * NextProtocol and is set when handling the NextProtocol message, before
     * the Finished message.
     */
    unsigned char *next_proto_negotiated;
    unsigned char next_proto_negotiated_len;
#   endif
#   define session_ctx initial_ctx
    /* What we'll do */
    STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
    /* What's been chosen */
    SRTP_PROTECTION_PROFILE *srtp_profile;
        /*-
         * Is use of the Heartbeat extension negotiated?
         * 0: disabled
         * 1: enabled
         * 2: enabled, but not allowed to send Requests
         */
    unsigned int tlsext_heartbeat;
    /* Indicates if a HeartbeatRequest is in flight */
    unsigned int tlsext_hb_pending;
    /* HeartbeatRequest sequence number */
    unsigned int tlsext_hb_seq;
#  else
#   define session_ctx ctx
#  endif                        /* OPENSSL_NO_TLSEXT */
    /*-
     * 1 if we are renegotiating.
     * 2 if we are a server and are inside a handshake
     * (i.e. not just sending a HelloRequest)
     */
    int renegotiate;
#  ifndef OPENSSL_NO_TLSEXT
    /*
     * For a client, this contains the list of supported protocols in wire
     * format.
     */
    unsigned char *alpn_client_proto_list;
    unsigned alpn_client_proto_list_len;
#  endif                        /* OPENSSL_NO_TLSEXT */
};

# endif

#ifdef __cplusplus
}
#endif

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

#ifdef  __cplusplus
extern "C" {
#endif

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

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

# define SSL_ST_CONNECT                  0x1000
# define SSL_ST_ACCEPT                   0x2000
# define SSL_ST_MASK                     0x0FFF
# define SSL_ST_INIT                     (SSL_ST_CONNECT|SSL_ST_ACCEPT)
# define SSL_ST_BEFORE                   0x4000
# define SSL_ST_OK                       0x03
# define SSL_ST_RENEGOTIATE              (0x04|SSL_ST_INIT)
# define SSL_ST_ERR                      (0x05|SSL_ST_INIT)

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

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

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

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

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

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

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

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

DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)
# define SSL_AD_REASON_OFFSET            1000/* offset to get SSL_R_... value
                                              * from SSL_AD_... */
/* These alert types are for SSLv3 and TLSv1 */
# define SSL_AD_CLOSE_NOTIFY             SSL3_AD_CLOSE_NOTIFY
/* fatal */
# define SSL_AD_UNEXPECTED_MESSAGE       SSL3_AD_UNEXPECTED_MESSAGE
/* fatal */
# define SSL_AD_BAD_RECORD_MAC           SSL3_AD_BAD_RECORD_MAC
# define SSL_AD_DECRYPTION_FAILED        TLS1_AD_DECRYPTION_FAILED
# define SSL_AD_RECORD_OVERFLOW          TLS1_AD_RECORD_OVERFLOW
/* fatal */
# define SSL_AD_DECOMPRESSION_FAILURE    SSL3_AD_DECOMPRESSION_FAILURE
/* fatal */
# define SSL_AD_HANDSHAKE_FAILURE        SSL3_AD_HANDSHAKE_FAILURE
/* Not for TLS */
# define SSL_AD_NO_CERTIFICATE           SSL3_AD_NO_CERTIFICATE
# 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
/* fatal */
# 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
# define SSL_AD_DECRYPT_ERROR            TLS1_AD_DECRYPT_ERROR
/* fatal */
# 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
# define SSL_AD_USER_CANCELLED           TLS1_AD_USER_CANCELLED
# define SSL_AD_NO_RENEGOTIATION         TLS1_AD_NO_RENEGOTIATION
# define SSL_AD_UNSUPPORTED_EXTENSION    TLS1_AD_UNSUPPORTED_EXTENSION
# define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
# define SSL_AD_UNRECOGNIZED_NAME        TLS1_AD_UNRECOGNIZED_NAME
# define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
# define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
/* fatal */
# define SSL_AD_UNKNOWN_PSK_IDENTITY     TLS1_AD_UNKNOWN_PSK_IDENTITY
/* fatal */
# define SSL_AD_INAPPROPRIATE_FALLBACK   TLS1_AD_INAPPROPRIATE_FALLBACK
# define SSL_ERROR_NONE                  0
# define SSL_ERROR_SSL                   1
# define SSL_ERROR_WANT_READ             2
# define SSL_ERROR_WANT_WRITE            3
# define SSL_ERROR_WANT_X509_LOOKUP      4
# define SSL_ERROR_SYSCALL               5/* look at error stack/return
                                           * value/errno */
# define SSL_ERROR_ZERO_RETURN           6
# define SSL_ERROR_WANT_CONNECT          7
# define SSL_ERROR_WANT_ACCEPT           8
# define SSL_CTRL_NEED_TMP_RSA                   1
# define SSL_CTRL_SET_TMP_RSA                    2
# define SSL_CTRL_SET_TMP_DH                     3
# define SSL_CTRL_SET_TMP_ECDH                   4
# define SSL_CTRL_SET_TMP_RSA_CB                 5
# define SSL_CTRL_SET_TMP_DH_CB                  6
# define SSL_CTRL_SET_TMP_ECDH_CB                7
# define SSL_CTRL_GET_SESSION_REUSED             8
# define SSL_CTRL_GET_CLIENT_CERT_REQUEST        9
# define SSL_CTRL_GET_NUM_RENEGOTIATIONS         10
# define SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS       11
# define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS       12
# define SSL_CTRL_GET_FLAGS                      13
# define SSL_CTRL_EXTRA_CHAIN_CERT               14
# define SSL_CTRL_SET_MSG_CALLBACK               15
# define SSL_CTRL_SET_MSG_CALLBACK_ARG           16
/* only applies to datagram connections */
# define SSL_CTRL_SET_MTU                17
/* Stats */
# define SSL_CTRL_SESS_NUMBER                    20
# define SSL_CTRL_SESS_CONNECT                   21
# define SSL_CTRL_SESS_CONNECT_GOOD              22
# define SSL_CTRL_SESS_CONNECT_RENEGOTIATE       23
# define SSL_CTRL_SESS_ACCEPT                    24
# define SSL_CTRL_SESS_ACCEPT_GOOD               25
# define SSL_CTRL_SESS_ACCEPT_RENEGOTIATE        26
# define SSL_CTRL_SESS_HIT                       27
# define SSL_CTRL_SESS_CB_HIT                    28
# define SSL_CTRL_SESS_MISSES                    29
# define SSL_CTRL_SESS_TIMEOUTS                  30
# define SSL_CTRL_SESS_CACHE_FULL                31
# define SSL_CTRL_OPTIONS                        32
# define SSL_CTRL_MODE                           33
# define SSL_CTRL_GET_READ_AHEAD                 40
# define SSL_CTRL_SET_READ_AHEAD                 41
# define SSL_CTRL_SET_SESS_CACHE_SIZE            42
# define SSL_CTRL_GET_SESS_CACHE_SIZE            43
# define SSL_CTRL_SET_SESS_CACHE_MODE            44
# define SSL_CTRL_GET_SESS_CACHE_MODE            45
# define SSL_CTRL_GET_MAX_CERT_LIST              50
# define SSL_CTRL_SET_MAX_CERT_LIST              51
# define SSL_CTRL_SET_MAX_SEND_FRAGMENT          52
/* see tls1.h for macros based on these */
# ifndef OPENSSL_NO_TLSEXT
#  define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB       53
#  define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG      54
#  define SSL_CTRL_SET_TLSEXT_HOSTNAME            55
#  define SSL_CTRL_SET_TLSEXT_DEBUG_CB            56
#  define SSL_CTRL_SET_TLSEXT_DEBUG_ARG           57
#  define SSL_CTRL_GET_TLSEXT_TICKET_KEYS         58
#  define SSL_CTRL_SET_TLSEXT_TICKET_KEYS         59
#  define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT    60
#  define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB 61
#  define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB_ARG 62
#  define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB       63
#  define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG   64
#  define SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE     65
#  define SSL_CTRL_GET_TLSEXT_STATUS_REQ_EXTS     66
#  define SSL_CTRL_SET_TLSEXT_STATUS_REQ_EXTS     67
#  define SSL_CTRL_GET_TLSEXT_STATUS_REQ_IDS      68
#  define SSL_CTRL_SET_TLSEXT_STATUS_REQ_IDS      69
#  define SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP        70
#  define SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP        71
#  define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB       72
#  define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB    75
#  define SSL_CTRL_SET_SRP_VERIFY_PARAM_CB                76
#  define SSL_CTRL_SET_SRP_GIVE_CLIENT_PWD_CB             77
#  define SSL_CTRL_SET_SRP_ARG            78
#  define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME               79
#  define SSL_CTRL_SET_TLS_EXT_SRP_STRENGTH               80
#  define SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD               81
#  ifndef OPENSSL_NO_HEARTBEATS
#   define SSL_CTRL_TLS_EXT_SEND_HEARTBEAT                         85
#   define SSL_CTRL_GET_TLS_EXT_HEARTBEAT_PENDING          86
#   define SSL_CTRL_SET_TLS_EXT_HEARTBEAT_NO_REQUESTS      87
#  endif
# endif                         /* OPENSSL_NO_TLSEXT */
# define DTLS_CTRL_GET_TIMEOUT           73
# define DTLS_CTRL_HANDLE_TIMEOUT        74
# define DTLS_CTRL_LISTEN                        75
# define SSL_CTRL_GET_RI_SUPPORT                 76
# define SSL_CTRL_CLEAR_OPTIONS                  77
# define SSL_CTRL_CLEAR_MODE                     78
# define SSL_CTRL_GET_EXTRA_CHAIN_CERTS          82
# define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS        83
# define SSL_CTRL_CHAIN                          88
# define SSL_CTRL_CHAIN_CERT                     89
# define SSL_CTRL_GET_CURVES                     90
# define SSL_CTRL_SET_CURVES                     91
# define SSL_CTRL_SET_CURVES_LIST                92
# define SSL_CTRL_GET_SHARED_CURVE               93
# define SSL_CTRL_SET_ECDH_AUTO                  94
# define SSL_CTRL_SET_SIGALGS                    97
# define SSL_CTRL_SET_SIGALGS_LIST               98
# define SSL_CTRL_CERT_FLAGS                     99
# define SSL_CTRL_CLEAR_CERT_FLAGS               100
# define SSL_CTRL_SET_CLIENT_SIGALGS             101
# define SSL_CTRL_SET_CLIENT_SIGALGS_LIST        102
# define SSL_CTRL_GET_CLIENT_CERT_TYPES          103
# define SSL_CTRL_SET_CLIENT_CERT_TYPES          104
# define SSL_CTRL_BUILD_CERT_CHAIN               105
# define SSL_CTRL_SET_VERIFY_CERT_STORE          106
# define SSL_CTRL_SET_CHAIN_CERT_STORE           107
# define SSL_CTRL_GET_PEER_SIGNATURE_NID         108
# define SSL_CTRL_GET_SERVER_TMP_KEY             109
# define SSL_CTRL_GET_RAW_CIPHERLIST             110
# define SSL_CTRL_GET_EC_POINT_FORMATS           111
# define SSL_CTRL_GET_CHAIN_CERTS                115
# define SSL_CTRL_SELECT_CURRENT_CERT            116
# define SSL_CTRL_SET_CURRENT_CERT               117
# define SSL_CTRL_CHECK_PROTO_VERSION            119
# define DTLS_CTRL_SET_LINK_MTU                  120
# define DTLS_CTRL_GET_LINK_MIN_MTU              121
# define SSL_CERT_SET_FIRST                      1
# define SSL_CERT_SET_NEXT                       2
# define SSL_CERT_SET_SERVER                     3
# define DTLSv1_get_timeout(ssl, arg) \
        SSL_ctrl(ssl,DTLS_CTRL_GET_TIMEOUT,0, (void *)arg)
# define DTLSv1_handle_timeout(ssl) \
        SSL_ctrl(ssl,DTLS_CTRL_HANDLE_TIMEOUT,0, NULL)
# define DTLSv1_listen(ssl, peer) \
        SSL_ctrl(ssl,DTLS_CTRL_LISTEN,0, (void *)peer)
# define SSL_session_reused(ssl) \
        SSL_ctrl((ssl),SSL_CTRL_GET_SESSION_REUSED,0,NULL)
# define SSL_num_renegotiations(ssl) \
        SSL_ctrl((ssl),SSL_CTRL_GET_NUM_RENEGOTIATIONS,0,NULL)
# define SSL_clear_num_renegotiations(ssl) \
        SSL_ctrl((ssl),SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS,0,NULL)
# define SSL_total_renegotiations(ssl) \
        SSL_ctrl((ssl),SSL_CTRL_GET_TOTAL_RENEGOTIATIONS,0,NULL)
# define SSL_CTX_need_tmp_RSA(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_NEED_TMP_RSA,0,NULL)
# define SSL_CTX_set_tmp_rsa(ctx,rsa) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_RSA,0,(char *)rsa)
# define SSL_CTX_set_tmp_dh(ctx,dh) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_DH,0,(char *)dh)
# define SSL_CTX_set_tmp_ecdh(ctx,ecdh) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH,0,(char *)ecdh)
# define SSL_need_tmp_RSA(ssl) \
        SSL_ctrl(ssl,SSL_CTRL_NEED_TMP_RSA,0,NULL)
# define SSL_set_tmp_rsa(ssl,rsa) \
        SSL_ctrl(ssl,SSL_CTRL_SET_TMP_RSA,0,(char *)rsa)
# define SSL_set_tmp_dh(ssl,dh) \
        SSL_ctrl(ssl,SSL_CTRL_SET_TMP_DH,0,(char *)dh)
# define SSL_set_tmp_ecdh(ssl,ecdh) \
        SSL_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH,0,(char *)ecdh)
# define SSL_CTX_add_extra_chain_cert(ctx,x509) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_EXTRA_CHAIN_CERT,0,(char *)x509)
# define SSL_CTX_get_extra_chain_certs(ctx,px509) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,0,px509)
# define SSL_CTX_get_extra_chain_certs_only(ctx,px509) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,1,px509)
# define SSL_CTX_clear_extra_chain_certs(ctx) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS,0,NULL)
# define SSL_CTX_set0_chain(ctx,sk) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)sk)
# define SSL_CTX_set1_chain(ctx,sk) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)sk)
# define SSL_CTX_add0_chain_cert(ctx,x509) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)x509)
# define SSL_CTX_add1_chain_cert(ctx,x509) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)x509)
# define SSL_CTX_get0_chain_certs(ctx,px509) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
# define SSL_CTX_clear_chain_certs(ctx) \
        SSL_CTX_set0_chain(ctx,NULL)
# define SSL_CTX_build_cert_chain(ctx, flags) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
# define SSL_CTX_select_current_cert(ctx,x509) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)x509)
# define SSL_CTX_set_current_cert(ctx, op) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
# define SSL_CTX_set0_verify_cert_store(ctx,st) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)st)
# define SSL_CTX_set1_verify_cert_store(ctx,st) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)st)
# define SSL_CTX_set0_chain_cert_store(ctx,st) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)st)
# define SSL_CTX_set1_chain_cert_store(ctx,st) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)st)
# define SSL_set0_chain(ctx,sk) \
        SSL_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)sk)
# define SSL_set1_chain(ctx,sk) \
        SSL_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)sk)
# define SSL_add0_chain_cert(ctx,x509) \
        SSL_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)x509)
# define SSL_add1_chain_cert(ctx,x509) \
        SSL_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)x509)
# define SSL_get0_chain_certs(ctx,px509) \
        SSL_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
# define SSL_clear_chain_certs(ctx) \
        SSL_set0_chain(ctx,NULL)
# define SSL_build_cert_chain(s, flags) \
        SSL_ctrl(s,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
# define SSL_select_current_cert(ctx,x509) \
        SSL_ctrl(ctx,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)x509)
# define SSL_set_current_cert(ctx,op) \
        SSL_ctrl(ctx,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
# define SSL_set0_verify_cert_store(s,st) \
        SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)st)
# define SSL_set1_verify_cert_store(s,st) \
        SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)st)
# define SSL_set0_chain_cert_store(s,st) \
        SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)st)
# define SSL_set1_chain_cert_store(s,st) \
        SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)st)
# define SSL_get1_curves(ctx, s) \
        SSL_ctrl(ctx,SSL_CTRL_GET_CURVES,0,(char *)s)
# define SSL_CTX_set1_curves(ctx, clist, clistlen) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CURVES,clistlen,(char *)clist)
# define SSL_CTX_set1_curves_list(ctx, s) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CURVES_LIST,0,(char *)s)
# define SSL_set1_curves(ctx, clist, clistlen) \
        SSL_ctrl(ctx,SSL_CTRL_SET_CURVES,clistlen,(char *)clist)
# define SSL_set1_curves_list(ctx, s) \
        SSL_ctrl(ctx,SSL_CTRL_SET_CURVES_LIST,0,(char *)s)
# define SSL_get_shared_curve(s, n) \
        SSL_ctrl(s,SSL_CTRL_GET_SHARED_CURVE,n,NULL)
# define SSL_CTX_set_ecdh_auto(ctx, onoff) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_ECDH_AUTO,onoff,NULL)
# define SSL_set_ecdh_auto(s, onoff) \
        SSL_ctrl(s,SSL_CTRL_SET_ECDH_AUTO,onoff,NULL)
# define SSL_CTX_set1_sigalgs(ctx, slist, slistlen) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS,slistlen,(int *)slist)
# define SSL_CTX_set1_sigalgs_list(ctx, s) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)s)
# define SSL_set1_sigalgs(ctx, slist, slistlen) \
        SSL_ctrl(ctx,SSL_CTRL_SET_SIGALGS,slistlen,(int *)slist)
# define SSL_set1_sigalgs_list(ctx, s) \
        SSL_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)s)
# define SSL_CTX_set1_client_sigalgs(ctx, slist, slistlen) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)slist)
# define SSL_CTX_set1_client_sigalgs_list(ctx, s) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)s)
# define SSL_set1_client_sigalgs(ctx, slist, slistlen) \
        SSL_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,clistlen,(int *)slist)
# define SSL_set1_client_sigalgs_list(ctx, s) \
        SSL_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)s)
# define SSL_get0_certificate_types(s, clist) \
        SSL_ctrl(s, SSL_CTRL_GET_CLIENT_CERT_TYPES, 0, (char *)clist)
# define SSL_CTX_set1_client_certificate_types(ctx, clist, clistlen) \
        SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen,(char *)clist)
# define SSL_set1_client_certificate_types(s, clist, clistlen) \
        SSL_ctrl(s,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen,(char *)clist)
# define SSL_get_peer_signature_nid(s, pn) \
        SSL_ctrl(s,SSL_CTRL_GET_PEER_SIGNATURE_NID,0,pn)
# define SSL_get_server_tmp_key(s, pk) \
        SSL_ctrl(s,SSL_CTRL_GET_SERVER_TMP_KEY,0,pk)
# define SSL_get0_raw_cipherlist(s, plst) \
        SSL_ctrl(s,SSL_CTRL_GET_RAW_CIPHERLIST,0,(char *)plst)
# define SSL_get0_ec_point_formats(s, plst) \
        SSL_ctrl(s,SSL_CTRL_GET_EC_POINT_FORMATS,0,(char *)plst)
# ifndef OPENSSL_NO_BIO
BIO_METHOD *BIO_f_ssl(void);
BIO *BIO_new_ssl(SSL_CTX *ctx, int client);
BIO *BIO_new_ssl_connect(SSL_CTX *ctx);
BIO *BIO_new_buffer_ssl_connect(SSL_CTX *ctx);
int BIO_ssl_copy_session_id(BIO *to, BIO *from);
void BIO_ssl_shutdown(BIO *ssl_bio);

# endif

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

void SSL_CTX_flush_sessions(SSL_CTX *ctx, long tm);

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

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

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

# endif

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

# endif

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

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

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

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

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

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

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

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

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

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

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

X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx);
X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl);


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

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

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

# ifndef OPENSSL_NO_SSL2_METHOD
const SSL_METHOD *SSLv2_method(void); /* SSLv2 */
const SSL_METHOD *SSLv2_server_method(void); /* SSLv2 */
const SSL_METHOD *SSLv2_client_method(void); /* SSLv2 */
# endif

# ifndef OPENSSL_NO_SSL3_METHOD
const SSL_METHOD *SSLv3_method(void); /* SSLv3 */
const SSL_METHOD *SSLv3_server_method(void); /* SSLv3 */
const SSL_METHOD *SSLv3_client_method(void); /* SSLv3 */
# endif

const SSL_METHOD *SSLv23_method(void); /* Negotiate highest available SSL/TLS
                                        * version */
const SSL_METHOD *SSLv23_server_method(void); /* Negotiate highest available
                                               * SSL/TLS version */
const SSL_METHOD *SSLv23_client_method(void); /* Negotiate highest available
                                               * SSL/TLS version */

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

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

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

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

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

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

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

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

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

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

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

long SSL_get_default_timeout(const SSL *s);

int SSL_library_init(void);

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

SSL *SSL_dup(SSL *ssl);

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

X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx);
EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx);

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

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

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

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

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

int SSL_get_ex_data_X509_STORE_CTX_idx(void);

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

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

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

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

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

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);
STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
                                                      *meths);
void SSL_COMP_free_compression_methods(void);
int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm);

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

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

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

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

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

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

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

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

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

# ifndef OPENSSL_NO_UNIT_TEST
const struct openssl_ssl_test_functions *SSL_test_functions(void);
# endif

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

/* Error codes for the SSL functions. */

/* Function codes. */
# define SSL_F_CHECK_SUITEB_CIPHER_LIST                   331
# define SSL_F_CLIENT_CERTIFICATE                         100
# define SSL_F_CLIENT_FINISHED                            167
# define SSL_F_CLIENT_HELLO                               101
# define SSL_F_CLIENT_MASTER_KEY                          102
# define SSL_F_D2I_SSL_SESSION                            103
# define SSL_F_DO_DTLS1_WRITE                             245
# define SSL_F_DO_SSL3_WRITE                              104
# define SSL_F_DTLS1_ACCEPT                               246
# define SSL_F_DTLS1_ADD_CERT_TO_BUF                      295
# define SSL_F_DTLS1_BUFFER_RECORD                        247
# define SSL_F_DTLS1_CHECK_TIMEOUT_NUM                    316
# define SSL_F_DTLS1_CLIENT_HELLO                         248
# define SSL_F_DTLS1_CONNECT                              249
# define SSL_F_DTLS1_ENC                                  250
# define SSL_F_DTLS1_GET_HELLO_VERIFY                     251
# define SSL_F_DTLS1_GET_MESSAGE                          252
# define SSL_F_DTLS1_GET_MESSAGE_FRAGMENT                 253
# define SSL_F_DTLS1_GET_RECORD                           254
# define SSL_F_DTLS1_HANDLE_TIMEOUT                       297
# define SSL_F_DTLS1_HEARTBEAT                            305
# define SSL_F_DTLS1_OUTPUT_CERT_CHAIN                    255
# define SSL_F_DTLS1_PREPROCESS_FRAGMENT                  288
# define SSL_F_DTLS1_PROCESS_BUFFERED_RECORDS             424
# 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_STATIC_DH_KEY                   340
# define SSL_F_GET_SERVER_VERIFY                          110
# define SSL_F_I2D_SSL_SESSION                            111
# define SSL_F_READ_N                                     112
# define SSL_F_REQUEST_CERTIFICATE                        113
# define SSL_F_SERVER_FINISH                              239
# define SSL_F_SERVER_HELLO                               114
# define SSL_F_SERVER_VERIFY                              240
# define SSL_F_SSL23_ACCEPT                               115
# define SSL_F_SSL23_CLIENT_HELLO                         116
# define SSL_F_SSL23_CONNECT                              117
# define SSL_F_SSL23_GET_CLIENT_HELLO                     118
# define SSL_F_SSL23_GET_SERVER_HELLO                     119
# define SSL_F_SSL23_PEEK                                 237
# define SSL_F_SSL23_READ                                 120
# define SSL_F_SSL23_WRITE                                121
# define SSL_F_SSL2_ACCEPT                                122
# define SSL_F_SSL2_CONNECT                               123
# define SSL_F_SSL2_ENC_INIT                              124
# define SSL_F_SSL2_GENERATE_KEY_MATERIAL                 241
# define SSL_F_SSL2_PEEK                                  234
# define SSL_F_SSL2_READ                                  125
# define SSL_F_SSL2_READ_INTERNAL                         236
# define SSL_F_SSL2_SET_CERTIFICATE                       126
# define SSL_F_SSL2_WRITE                                 127
# define SSL_F_SSL3_ACCEPT                                128
# define SSL_F_SSL3_ADD_CERT_TO_BUF                       296
# define SSL_F_SSL3_CALLBACK_CTRL                         233
# define SSL_F_SSL3_CHANGE_CIPHER_STATE                   129
# define SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM              130
# define SSL_F_SSL3_CHECK_CLIENT_HELLO                    304
# define SSL_F_SSL3_CHECK_FINISHED                        339
# define SSL_F_SSL3_CLIENT_HELLO                          131
# define SSL_F_SSL3_CONNECT                               132
# define SSL_F_SSL3_CTRL                                  213
# define SSL_F_SSL3_CTX_CTRL                              133
# define SSL_F_SSL3_DIGEST_CACHED_RECORDS                 293
# define SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC                 292
# define SSL_F_SSL3_ENC                                   134
# define SSL_F_SSL3_GENERATE_KEY_BLOCK                    238
# define SSL_F_SSL3_GENERATE_MASTER_SECRET                388
# define SSL_F_SSL3_GET_CERTIFICATE_REQUEST               135
# define SSL_F_SSL3_GET_CERT_STATUS                       289
# define SSL_F_SSL3_GET_CERT_VERIFY                       136
# define SSL_F_SSL3_GET_CLIENT_CERTIFICATE                137
# define SSL_F_SSL3_GET_CLIENT_HELLO                      138
# define SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE               139
# define SSL_F_SSL3_GET_FINISHED                          140
# define SSL_F_SSL3_GET_KEY_EXCHANGE                      141
# define SSL_F_SSL3_GET_MESSAGE                           142
# define SSL_F_SSL3_GET_NEW_SESSION_TICKET                283
# define SSL_F_SSL3_GET_NEXT_PROTO                        306
# define SSL_F_SSL3_GET_RECORD                            143
# define SSL_F_SSL3_GET_SERVER_CERTIFICATE                144
# define SSL_F_SSL3_GET_SERVER_DONE                       145
# define SSL_F_SSL3_GET_SERVER_HELLO                      146
# define SSL_F_SSL3_HANDSHAKE_MAC                         285
# define SSL_F_SSL3_NEW_SESSION_TICKET                    287
# define SSL_F_SSL3_OUTPUT_CERT_CHAIN                     147
# define SSL_F_SSL3_PEEK                                  235
# define SSL_F_SSL3_READ_BYTES                            148
# define SSL_F_SSL3_READ_N                                149
# define SSL_F_SSL3_SEND_CERTIFICATE_REQUEST              150
# define SSL_F_SSL3_SEND_CLIENT_CERTIFICATE               151
# define SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE              152
# define SSL_F_SSL3_SEND_CLIENT_VERIFY                    153
# define SSL_F_SSL3_SEND_SERVER_CERTIFICATE               154
# define SSL_F_SSL3_SEND_SERVER_HELLO                     242
# define SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE              155
# define SSL_F_SSL3_SETUP_KEY_BLOCK                       157
# define SSL_F_SSL3_SETUP_READ_BUFFER                     156
# define SSL_F_SSL3_SETUP_WRITE_BUFFER                    291
# define SSL_F_SSL3_WRITE_BYTES                           158
# define SSL_F_SSL3_WRITE_PENDING                         159
# define SSL_F_SSL_ADD_CERT_CHAIN                         318
# define SSL_F_SSL_ADD_CERT_TO_BUF                        319
# define SSL_F_SSL_ADD_CLIENTHELLO_RENEGOTIATE_EXT        298
# define SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT                 277
# define SSL_F_SSL_ADD_CLIENTHELLO_USE_SRTP_EXT           307
# define SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK         215
# define SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK        216
# define SSL_F_SSL_ADD_SERVERHELLO_RENEGOTIATE_EXT        299
# define SSL_F_SSL_ADD_SERVERHELLO_TLSEXT                 278
# define SSL_F_SSL_ADD_SERVERHELLO_USE_SRTP_EXT           308
# define SSL_F_SSL_BAD_METHOD                             160
# define SSL_F_SSL_BUILD_CERT_CHAIN                       332
# define SSL_F_SSL_BYTES_TO_CIPHER_LIST                   161
# define SSL_F_SSL_CERT_DUP                               221
# define SSL_F_SSL_CERT_INST                              222
# define SSL_F_SSL_CERT_INSTANTIATE                       214
# define SSL_F_SSL_CERT_NEW                               162
# define SSL_F_SSL_CHECK_PRIVATE_KEY                      163
# define SSL_F_SSL_CHECK_SERVERHELLO_TLSEXT               280
# define SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG            279
# define SSL_F_SSL_CIPHER_PROCESS_RULESTR                 230
# define SSL_F_SSL_CIPHER_STRENGTH_SORT                   231
# define SSL_F_SSL_CLEAR                                  164
# define SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD            165
# define SSL_F_SSL_CONF_CMD                               334
# define SSL_F_SSL_CREATE_CIPHER_LIST                     166
# define SSL_F_SSL_CTRL                                   232
# define SSL_F_SSL_CTX_CHECK_PRIVATE_KEY                  168
# define SSL_F_SSL_CTX_MAKE_PROFILES                      309
# define SSL_F_SSL_CTX_NEW                                169
# define SSL_F_SSL_CTX_SET_CIPHER_LIST                    269
# define SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE             290
# define SSL_F_SSL_CTX_SET_PURPOSE                        226
# define SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT             219
# define SSL_F_SSL_CTX_SET_SSL_VERSION                    170
# define SSL_F_SSL_CTX_SET_TRUST                          229
# define SSL_F_SSL_CTX_USE_CERTIFICATE                    171
# define SSL_F_SSL_CTX_USE_CERTIFICATE_ASN1               172
# define SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE         220
# define SSL_F_SSL_CTX_USE_CERTIFICATE_FILE               173
# define SSL_F_SSL_CTX_USE_PRIVATEKEY                     174
# define SSL_F_SSL_CTX_USE_PRIVATEKEY_ASN1                175
# define SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE                176
# define SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT              272
# define SSL_F_SSL_CTX_USE_RSAPRIVATEKEY                  177
# define SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_ASN1             178
# define SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE             179
# define SSL_F_SSL_CTX_USE_SERVERINFO                     336
# define SSL_F_SSL_CTX_USE_SERVERINFO_FILE                337
# define SSL_F_SSL_DO_HANDSHAKE                           180
# define SSL_F_SSL_GET_NEW_SESSION                        181
# define SSL_F_SSL_GET_PREV_SESSION                       217
# define SSL_F_SSL_GET_SERVER_CERT_INDEX                  322
# define SSL_F_SSL_GET_SERVER_SEND_CERT                   182
# define SSL_F_SSL_GET_SERVER_SEND_PKEY                   317
# define SSL_F_SSL_GET_SIGN_PKEY                          183
# define SSL_F_SSL_INIT_WBIO_BUFFER                       184
# define SSL_F_SSL_LOAD_CLIENT_CA_FILE                    185
# define SSL_F_SSL_NEW                                    186
# define SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT      300
# define SSL_F_SSL_PARSE_CLIENTHELLO_TLSEXT               302
# define SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT         310
# define SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT      301
# define SSL_F_SSL_PARSE_SERVERHELLO_TLSEXT               303
# define SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT         311
# define SSL_F_SSL_PEEK                                   270
# define SSL_F_SSL_PREPARE_CLIENTHELLO_TLSEXT             281
# define SSL_F_SSL_PREPARE_SERVERHELLO_TLSEXT             282
# define SSL_F_SSL_READ                                   223
# define SSL_F_SSL_RSA_PRIVATE_DECRYPT                    187
# define SSL_F_SSL_RSA_PUBLIC_ENCRYPT                     188
# define SSL_F_SSL_SCAN_CLIENTHELLO_TLSEXT                320
# define SSL_F_SSL_SCAN_SERVERHELLO_TLSEXT                321
# define SSL_F_SSL_SESSION_DUP                            348
# define SSL_F_SSL_SESSION_NEW                            189
# define SSL_F_SSL_SESSION_PRINT_FP                       190
# define SSL_F_SSL_SESSION_SET1_ID_CONTEXT                312
# define SSL_F_SSL_SESS_CERT_NEW                          225
# define SSL_F_SSL_SET_CERT                               191
# define SSL_F_SSL_SET_CIPHER_LIST                        271
# define SSL_F_SSL_SET_FD                                 192
# define SSL_F_SSL_SET_PKEY                               193
# define SSL_F_SSL_SET_PURPOSE                            227
# define SSL_F_SSL_SET_RFD                                194
# define SSL_F_SSL_SET_SESSION                            195
# define SSL_F_SSL_SET_SESSION_ID_CONTEXT                 218
# define SSL_F_SSL_SET_SESSION_TICKET_EXT                 294
# define SSL_F_SSL_SET_TRUST                              228
# define SSL_F_SSL_SET_WFD                                196
# define SSL_F_SSL_SHUTDOWN                               224
# define SSL_F_SSL_SRP_CTX_INIT                           313
# define SSL_F_SSL_UNDEFINED_CONST_FUNCTION               243
# define SSL_F_SSL_UNDEFINED_FUNCTION                     197
# define SSL_F_SSL_UNDEFINED_VOID_FUNCTION                244
# define SSL_F_SSL_USE_CERTIFICATE                        198
# define SSL_F_SSL_USE_CERTIFICATE_ASN1                   199
# define SSL_F_SSL_USE_CERTIFICATE_FILE                   200
# define SSL_F_SSL_USE_PRIVATEKEY                         201
# define SSL_F_SSL_USE_PRIVATEKEY_ASN1                    202
# define SSL_F_SSL_USE_PRIVATEKEY_FILE                    203
# define SSL_F_SSL_USE_PSK_IDENTITY_HINT                  273
# define SSL_F_SSL_USE_RSAPRIVATEKEY                      204
# define SSL_F_SSL_USE_RSAPRIVATEKEY_ASN1                 205
# define SSL_F_SSL_USE_RSAPRIVATEKEY_FILE                 206
# define SSL_F_SSL_VERIFY_CERT_CHAIN                      207
# define SSL_F_SSL_WRITE                                  208
# define SSL_F_TLS12_CHECK_PEER_SIGALG                    333
# define SSL_F_TLS1_CERT_VERIFY_MAC                       286
# define SSL_F_TLS1_CHANGE_CIPHER_STATE                   209
# define SSL_F_TLS1_CHECK_SERVERHELLO_TLSEXT              274
# define SSL_F_TLS1_ENC                                   210
# define SSL_F_TLS1_EXPORT_KEYING_MATERIAL                314
# define SSL_F_TLS1_GET_CURVELIST                         338
# define SSL_F_TLS1_HEARTBEAT                             315
# define SSL_F_TLS1_PREPARE_CLIENTHELLO_TLSEXT            275
# define SSL_F_TLS1_PREPARE_SERVERHELLO_TLSEXT            276
# define SSL_F_TLS1_PRF                                   284
# define SSL_F_TLS1_SETUP_KEY_BLOCK                       211
# define SSL_F_TLS1_SET_SERVER_SIGALGS                    335
# define SSL_F_WRITE_PENDING                              212

/* Reason codes. */
# define SSL_R_APP_DATA_IN_HANDSHAKE                      100
# define SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT 272
# define SSL_R_BAD_ALERT_RECORD                           101
# define SSL_R_BAD_AUTHENTICATION_TYPE                    102
# define SSL_R_BAD_CHANGE_CIPHER_SPEC                     103
# define SSL_R_BAD_CHECKSUM                               104
# define SSL_R_BAD_DATA                                   390
# define SSL_R_BAD_DATA_RETURNED_BY_CALLBACK              106
# define SSL_R_BAD_DECOMPRESSION                          107
# define SSL_R_BAD_DH_G_LENGTH                            108
# define SSL_R_BAD_DH_G_VALUE                             375
# define SSL_R_BAD_DH_PUB_KEY_LENGTH                      109
# define SSL_R_BAD_DH_PUB_KEY_VALUE                       393
# define SSL_R_BAD_DH_P_LENGTH                            110
# define SSL_R_BAD_DH_P_VALUE                             395
# define SSL_R_BAD_DIGEST_LENGTH                          111
# define SSL_R_BAD_DSA_SIGNATURE                          112
# define SSL_R_BAD_ECC_CERT                               304
# define SSL_R_BAD_ECDSA_SIGNATURE                        305
# define SSL_R_BAD_ECPOINT                                306
# define SSL_R_BAD_HANDSHAKE_LENGTH                       332
# define SSL_R_BAD_HELLO_REQUEST                          105
# define SSL_R_BAD_LENGTH                                 271
# define SSL_R_BAD_MAC_DECODE                             113
# define SSL_R_BAD_MAC_LENGTH                             333
# define SSL_R_BAD_MESSAGE_TYPE                           114
# define SSL_R_BAD_PACKET_LENGTH                          115
# define SSL_R_BAD_PROTOCOL_VERSION_NUMBER                116
# define SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH               316
# define SSL_R_BAD_RESPONSE_ARGUMENT                      117
# define SSL_R_BAD_RSA_DECRYPT                            118
# define SSL_R_BAD_RSA_ENCRYPT                            119
# define SSL_R_BAD_RSA_E_LENGTH                           120
# define SSL_R_BAD_RSA_MODULUS_LENGTH                     121
# define SSL_R_BAD_RSA_SIGNATURE                          122
# define SSL_R_BAD_SIGNATURE                              123
# define SSL_R_BAD_SRP_A_LENGTH                           347
# define SSL_R_BAD_SRP_B_LENGTH                           348
# define SSL_R_BAD_SRP_G_LENGTH                           349
# define SSL_R_BAD_SRP_N_LENGTH                           350
# define SSL_R_BAD_SRP_PARAMETERS                         371
# define SSL_R_BAD_SRP_S_LENGTH                           351
# define SSL_R_BAD_SRTP_MKI_VALUE                         352
# define SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST           353
# define SSL_R_BAD_SSL_FILETYPE                           124
# define SSL_R_BAD_SSL_SESSION_ID_LENGTH                  125
# define SSL_R_BAD_STATE                                  126
# define SSL_R_BAD_VALUE                                  384
# define SSL_R_BAD_WRITE_RETRY                            127
# define SSL_R_BIO_NOT_SET                                128
# define SSL_R_BLOCK_CIPHER_PAD_IS_WRONG                  129
# define SSL_R_BN_LIB                                     130
# define SSL_R_CA_DN_LENGTH_MISMATCH                      131
# define SSL_R_CA_DN_TOO_LONG                             132
# define SSL_R_CCS_RECEIVED_EARLY                         133
# define SSL_R_CERTIFICATE_VERIFY_FAILED                  134
# define SSL_R_CERT_CB_ERROR                              377
# define SSL_R_CERT_LENGTH_MISMATCH                       135
# define SSL_R_CHALLENGE_IS_DIFFERENT                     136
# define SSL_R_CIPHER_CODE_WRONG_LENGTH                   137
# define SSL_R_CIPHER_OR_HASH_UNAVAILABLE                 138
# define SSL_R_CIPHER_TABLE_SRC_ERROR                     139
# define SSL_R_CLIENTHELLO_TLSEXT                         226
# define SSL_R_COMPRESSED_LENGTH_TOO_LONG                 140
# define SSL_R_COMPRESSION_DISABLED                       343
# define SSL_R_COMPRESSION_FAILURE                        141
# define SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE    307
# define SSL_R_COMPRESSION_LIBRARY_ERROR                  142
# define SSL_R_CONNECTION_ID_IS_DIFFERENT                 143
# define SSL_R_CONNECTION_TYPE_NOT_SET                    144
# define SSL_R_COOKIE_MISMATCH                            308
# define SSL_R_DATA_BETWEEN_CCS_AND_FINISHED              145
# define SSL_R_DATA_LENGTH_TOO_LONG                       146
# define SSL_R_DECRYPTION_FAILED                          147
# define SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC        281
# define SSL_R_DH_KEY_TOO_SMALL                           372
# define SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG            148
# define SSL_R_DIGEST_CHECK_FAILED                        149
# define SSL_R_DTLS_MESSAGE_TOO_BIG                       334
# define SSL_R_DUPLICATE_COMPRESSION_ID                   309
# define SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT             317
# define SSL_R_ECC_CERT_NOT_FOR_SIGNING                   318
# define SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE         322
# define SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE        323
# define SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE              374
# define SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER               310
# define SSL_R_EMPTY_SRTP_PROTECTION_PROFILE_LIST         354
# define SSL_R_ENCRYPTED_LENGTH_TOO_LONG                  150
# define SSL_R_ERROR_GENERATING_TMP_RSA_KEY               282
# define SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST              151
# define SSL_R_EXCESSIVE_MESSAGE_SIZE                     152
# define SSL_R_EXTRA_DATA_IN_MESSAGE                      153
# define SSL_R_GOT_A_FIN_BEFORE_A_CCS                     154
# define SSL_R_GOT_NEXT_PROTO_BEFORE_A_CCS                355
# define SSL_R_GOT_NEXT_PROTO_WITHOUT_EXTENSION           356
# define SSL_R_HTTPS_PROXY_REQUEST                        155
# define SSL_R_HTTP_REQUEST                               156
# define SSL_R_ILLEGAL_PADDING                            283
# define SSL_R_ILLEGAL_SUITEB_DIGEST                      380
# define SSL_R_INAPPROPRIATE_FALLBACK                     373
# define SSL_R_INCONSISTENT_COMPRESSION                   340
# define SSL_R_INVALID_CHALLENGE_LENGTH                   158
# define SSL_R_INVALID_COMMAND                            280
# define SSL_R_INVALID_COMPRESSION_ALGORITHM              341
# define SSL_R_INVALID_NULL_CMD_NAME                      385
# define SSL_R_INVALID_PURPOSE                            278
# define SSL_R_INVALID_SERVERINFO_DATA                    388
# define SSL_R_INVALID_SRP_USERNAME                       357
# define SSL_R_INVALID_STATUS_RESPONSE                    328
# define SSL_R_INVALID_TICKET_KEYS_LENGTH                 325
# define SSL_R_INVALID_TRUST                              279
# define SSL_R_KEY_ARG_TOO_LONG                           284
# define SSL_R_KRB5                                       285
# define SSL_R_KRB5_C_CC_PRINC                            286
# define SSL_R_KRB5_C_GET_CRED                            287
# define SSL_R_KRB5_C_INIT                                288
# define SSL_R_KRB5_C_MK_REQ                              289
# define SSL_R_KRB5_S_BAD_TICKET                          290
# define SSL_R_KRB5_S_INIT                                291
# define SSL_R_KRB5_S_RD_REQ                              292
# define SSL_R_KRB5_S_TKT_EXPIRED                         293
# define SSL_R_KRB5_S_TKT_NYV                             294
# define SSL_R_KRB5_S_TKT_SKEW                            295
# define SSL_R_LENGTH_MISMATCH                            159
# define SSL_R_LENGTH_TOO_SHORT                           160
# define SSL_R_LIBRARY_BUG                                274
# define SSL_R_LIBRARY_HAS_NO_CIPHERS                     161
# define SSL_R_MESSAGE_TOO_LONG                           296
# define SSL_R_MISSING_DH_DSA_CERT                        162
# define SSL_R_MISSING_DH_KEY                             163
# define SSL_R_MISSING_DH_RSA_CERT                        164
# define SSL_R_MISSING_DSA_SIGNING_CERT                   165
# define SSL_R_MISSING_ECDH_CERT                          382
# define SSL_R_MISSING_ECDSA_SIGNING_CERT                 381
# define SSL_R_MISSING_EXPORT_TMP_DH_KEY                  166
# define SSL_R_MISSING_EXPORT_TMP_RSA_KEY                 167
# define SSL_R_MISSING_RSA_CERTIFICATE                    168
# define SSL_R_MISSING_RSA_ENCRYPTING_CERT                169
# define SSL_R_MISSING_RSA_SIGNING_CERT                   170
# define SSL_R_MISSING_SRP_PARAM                          358
# define SSL_R_MISSING_TMP_DH_KEY                         171
# define SSL_R_MISSING_TMP_ECDH_KEY                       311
# define SSL_R_MISSING_TMP_RSA_KEY                        172
# define SSL_R_MISSING_TMP_RSA_PKEY                       173
# define SSL_R_MISSING_VERIFY_MESSAGE                     174
# define SSL_R_MULTIPLE_SGC_RESTARTS                      346
# define SSL_R_NON_SSLV2_INITIAL_PACKET                   175
# define SSL_R_NO_CERTIFICATES_RETURNED                   176
# define SSL_R_NO_CERTIFICATE_ASSIGNED                    177
# define SSL_R_NO_CERTIFICATE_RETURNED                    178
# define SSL_R_NO_CERTIFICATE_SET                         179
# define SSL_R_NO_CERTIFICATE_SPECIFIED                   180
# define SSL_R_NO_CIPHERS_AVAILABLE                       181
# define SSL_R_NO_CIPHERS_PASSED                          182
# define SSL_R_NO_CIPHERS_SPECIFIED                       183
# define SSL_R_NO_CIPHER_LIST                             184
# define SSL_R_NO_CIPHER_MATCH                            185
# define SSL_R_NO_CLIENT_CERT_METHOD                      331
# define SSL_R_NO_CLIENT_CERT_RECEIVED                    186
# define SSL_R_NO_COMPRESSION_SPECIFIED                   187
# define SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER           330
# define SSL_R_NO_METHOD_SPECIFIED                        188
# define SSL_R_NO_PEM_EXTENSIONS                          389
# define SSL_R_NO_PRIVATEKEY                              189
# define SSL_R_NO_PRIVATE_KEY_ASSIGNED                    190
# define SSL_R_NO_PROTOCOLS_AVAILABLE                     191
# define SSL_R_NO_PUBLICKEY                               192
# define SSL_R_NO_RENEGOTIATION                           339
# define SSL_R_NO_REQUIRED_DIGEST                         324
# define SSL_R_NO_SHARED_CIPHER                           193
# define SSL_R_NO_SHARED_SIGATURE_ALGORITHMS              376
# define SSL_R_NO_SRTP_PROFILES                           359
# define SSL_R_NO_VERIFY_CALLBACK                         194
# define SSL_R_NULL_SSL_CTX                               195
# define SSL_R_NULL_SSL_METHOD_PASSED                     196
# define SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED            197
# define SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED 344
# define SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE       387
# define SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE        379
# define SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE              297
# define SSL_R_OPAQUE_PRF_INPUT_TOO_LONG                  327
# define SSL_R_PACKET_LENGTH_TOO_LONG                     198
# define SSL_R_PARSE_TLSEXT                               227
# define SSL_R_PATH_TOO_LONG                              270
# define SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE          199
# define SSL_R_PEER_ERROR                                 200
# define SSL_R_PEER_ERROR_CERTIFICATE                     201
# define SSL_R_PEER_ERROR_NO_CERTIFICATE                  202
# define SSL_R_PEER_ERROR_NO_CIPHER                       203
# define SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE    204
# define SSL_R_PEM_NAME_BAD_PREFIX                        391
# define SSL_R_PEM_NAME_TOO_SHORT                         392
# define SSL_R_PRE_MAC_LENGTH_TOO_LONG                    205
# define SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS          206
# define SSL_R_PROTOCOL_IS_SHUTDOWN                       207
# define SSL_R_PSK_IDENTITY_NOT_FOUND                     223
# define SSL_R_PSK_NO_CLIENT_CB                           224
# define SSL_R_PSK_NO_SERVER_CB                           225
# define SSL_R_PUBLIC_KEY_ENCRYPT_ERROR                   208
# define SSL_R_PUBLIC_KEY_IS_NOT_RSA                      209
# define SSL_R_PUBLIC_KEY_NOT_RSA                         210
# define SSL_R_READ_BIO_NOT_SET                           211
# define SSL_R_READ_TIMEOUT_EXPIRED                       312
# define SSL_R_READ_WRONG_PACKET_TYPE                     212
# define SSL_R_RECORD_LENGTH_MISMATCH                     213
# define SSL_R_RECORD_TOO_LARGE                           214
# define SSL_R_RECORD_TOO_SMALL                           298
# define SSL_R_RENEGOTIATE_EXT_TOO_LONG                   335
# define SSL_R_RENEGOTIATION_ENCODING_ERR                 336
# define SSL_R_RENEGOTIATION_MISMATCH                     337
# define SSL_R_REQUIRED_CIPHER_MISSING                    215
# define SSL_R_REQUIRED_COMPRESSSION_ALGORITHM_MISSING    342
# define SSL_R_REUSE_CERT_LENGTH_NOT_ZERO                 216
# define SSL_R_REUSE_CERT_TYPE_NOT_ZERO                   217
# define SSL_R_REUSE_CIPHER_LIST_NOT_ZERO                 218
# define SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING           345
# define SSL_R_SERVERHELLO_TLSEXT                         275
# define SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED           277
# define SSL_R_SHORT_READ                                 219
# define SSL_R_SHUTDOWN_WHILE_IN_INIT                     407
# define SSL_R_SIGNATURE_ALGORITHMS_ERROR                 360
# define SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE      220
# define SSL_R_SRP_A_CALC                                 361
# define SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES           362
# define SSL_R_SRTP_PROTECTION_PROFILE_LIST_TOO_LONG      363
# define SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE            364
# define SSL_R_SSL23_DOING_SESSION_ID_REUSE               221
# define SSL_R_SSL2_CONNECTION_ID_TOO_LONG                299
# define SSL_R_SSL3_EXT_INVALID_ECPOINTFORMAT             321
# define SSL_R_SSL3_EXT_INVALID_SERVERNAME                319
# define SSL_R_SSL3_EXT_INVALID_SERVERNAME_TYPE           320
# define SSL_R_SSL3_SESSION_ID_TOO_LONG                   300
# define SSL_R_SSL3_SESSION_ID_TOO_SHORT                  222
# define SSL_R_SSLV3_ALERT_BAD_CERTIFICATE                1042
# define SSL_R_SSLV3_ALERT_BAD_RECORD_MAC                 1020
# define SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED            1045
# define SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED            1044
# define SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN            1046
# define SSL_R_SSLV3_ALERT_DECOMPRESSION_FAILURE          1030
# define SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE              1040
# define SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER              1047
# define SSL_R_SSLV3_ALERT_NO_CERTIFICATE                 1041
# define SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE             1010
# define SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE        1043
# define SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION         228
# define SSL_R_SSL_HANDSHAKE_FAILURE                      229
# define SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS                 230
# define SSL_R_SSL_SESSION_ID_CALLBACK_FAILED             301
# define SSL_R_SSL_SESSION_ID_CONFLICT                    302
# define SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG            273
# define SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH              303
# define SSL_R_SSL_SESSION_ID_IS_DIFFERENT                231
# define SSL_R_TLSV1_ALERT_ACCESS_DENIED                  1049
# define SSL_R_TLSV1_ALERT_DECODE_ERROR                   1050
# define SSL_R_TLSV1_ALERT_DECRYPTION_FAILED              1021
# define SSL_R_TLSV1_ALERT_DECRYPT_ERROR                  1051
# define SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION             1060
# define SSL_R_TLSV1_ALERT_INAPPROPRIATE_FALLBACK         1086
# define SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY          1071
# define SSL_R_TLSV1_ALERT_INTERNAL_ERROR                 1080
# define SSL_R_TLSV1_ALERT_NO_RENEGOTIATION               1100
# define SSL_R_TLSV1_ALERT_PROTOCOL_VERSION               1070
# define SSL_R_TLSV1_ALERT_RECORD_OVERFLOW                1022
# define SSL_R_TLSV1_ALERT_UNKNOWN_CA                     1048
# define SSL_R_TLSV1_ALERT_USER_CANCELLED                 1090
# define SSL_R_TLSV1_BAD_CERTIFICATE_HASH_VALUE           1114
# define SSL_R_TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE      1113
# define SSL_R_TLSV1_CERTIFICATE_UNOBTAINABLE             1111
# define SSL_R_TLSV1_UNRECOGNIZED_NAME                    1112
# define SSL_R_TLSV1_UNSUPPORTED_EXTENSION                1110
# define SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER       232
# define SSL_R_TLS_HEARTBEAT_PEER_DOESNT_ACCEPT           365
# define SSL_R_TLS_HEARTBEAT_PENDING                      366
# define SSL_R_TLS_ILLEGAL_EXPORTER_LABEL                 367
# define SSL_R_TLS_INVALID_ECPOINTFORMAT_LIST             157
# define SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST 233
# define SSL_R_TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG    234
# define SSL_R_TOO_MANY_WARN_ALERTS                       409
# define SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER            235
# define SSL_R_UNABLE_TO_DECODE_DH_CERTS                  236
# define SSL_R_UNABLE_TO_DECODE_ECDH_CERTS                313
# define SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY               237
# define SSL_R_UNABLE_TO_FIND_DH_PARAMETERS               238
# define SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS             314
# define SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS       239
# define SSL_R_UNABLE_TO_FIND_SSL_METHOD                  240
# define SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES           241
# define SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES           242
# define SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES          243
# define SSL_R_UNEXPECTED_MESSAGE                         244
# define SSL_R_UNEXPECTED_RECORD                          245
# define SSL_R_UNINITIALIZED                              276
# define SSL_R_UNKNOWN_ALERT_TYPE                         246
# define SSL_R_UNKNOWN_CERTIFICATE_TYPE                   247
# define SSL_R_UNKNOWN_CIPHER_RETURNED                    248
# define SSL_R_UNKNOWN_CIPHER_TYPE                        249
# define SSL_R_UNKNOWN_CMD_NAME                           386
# define SSL_R_UNKNOWN_DIGEST                             368
# define SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE                  250
# define SSL_R_UNKNOWN_PKEY_TYPE                          251
# define SSL_R_UNKNOWN_PROTOCOL                           252
# define SSL_R_UNKNOWN_REMOTE_ERROR_TYPE                  253
# define SSL_R_UNKNOWN_SSL_VERSION                        254
# define SSL_R_UNKNOWN_STATE                              255
# define SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED       338
# define SSL_R_UNSUPPORTED_CIPHER                         256
# define SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM          257
# define SSL_R_UNSUPPORTED_DIGEST_TYPE                    326
# define SSL_R_UNSUPPORTED_ELLIPTIC_CURVE                 315
# define SSL_R_UNSUPPORTED_PROTOCOL                       258
# define SSL_R_UNSUPPORTED_SSL_VERSION                    259
# define SSL_R_UNSUPPORTED_STATUS_TYPE                    329
# define SSL_R_USE_SRTP_NOT_NEGOTIATED                    369
# define SSL_R_WRITE_BIO_NOT_SET                          260
# define SSL_R_WRONG_CERTIFICATE_TYPE                     383
# define SSL_R_WRONG_CIPHER_RETURNED                      261
# define SSL_R_WRONG_CURVE                                378
# define SSL_R_WRONG_MESSAGE_TYPE                         262
# define SSL_R_WRONG_NUMBER_OF_KEY_BITS                   263
# define SSL_R_WRONG_SIGNATURE_LENGTH                     264
# define SSL_R_WRONG_SIGNATURE_SIZE                       265
# define SSL_R_WRONG_SIGNATURE_TYPE                       370
# define SSL_R_WRONG_SSL_VERSION                          266
# define SSL_R_WRONG_VERSION_NUMBER                       267
# define SSL_R_X509_LIB                                   268
# define SSL_R_X509_VERIFICATION_SETUP_PROBLEMS           269

#ifdef  __cplusplus
}
#endif
#endif
Name	Size	Permission
aes.h	6146 bytes	0644
asn1.h	63328 bytes	0644
asn1_mac.h	24435 bytes	0644
asn1t.h	34475 bytes	0644
bio.h	38742 bytes	0644
blowfish.h	5351 bytes	0644
bn.h	39157 bytes	0644
buffer.h	5026 bytes	0644
camellia.h	5565 bytes	0644
cast.h	4659 bytes	0644
cmac.h	3257 bytes	0644
cms.h	28641 bytes	0644
comp.h	2375 bytes	0644
conf.h	11256 bytes	0644
conf_api.h	4147 bytes	0644
crypto.h	28108 bytes	0644
des.h	11762 bytes	0644
des_old.h	21486 bytes	0644
dh.h	16279 bytes	0644
dsa.h	14987 bytes	0644
dso.h	20210 bytes	0644
dtls1.h	9046 bytes	0644
e_os2.h	10945 bytes	0644
ebcdic.h	616 bytes	0644
ec.h	51993 bytes	0644
ecdh.h	5191 bytes	0644
ecdsa.h	14038 bytes	0644
engine.h	44946 bytes	0644
err.h	16814 bytes	0644
evp.h	68365 bytes	0644
fips.h	13631 bytes	0644
fips_rand.h	7327 bytes	0644
hmac.h	4535 bytes	0644
idea.h	4679 bytes	0644
krb5_asn.h	8165 bytes	0644
kssl.h	6853 bytes	0644
lhash.h	9549 bytes	0644
md2.h	3986 bytes	0644
md4.h	4786 bytes	0644
md5.h	4785 bytes	0644
modes.h	8658 bytes	0644
obj_mac.h	175657 bytes	0644
objects.h	47564 bytes	0644
ocsp.h	27147 bytes	0644
opensslconf-x86_64.h	7780 bytes	0644
opensslconf.h	1581 bytes	0644
opensslv.h	3942 bytes	0644
ossl_typ.h	7832 bytes	0644
pem.h	25872 bytes	0644
pem2.h	2862 bytes	0644
pkcs12.h	14851 bytes	0644
pkcs7.h	20778 bytes	0644
pqueue.h	3673 bytes	0644
rand.h	6888 bytes	0644
rc2.h	4546 bytes	0644
rc4.h	3807 bytes	0644
rc5.h	4931 bytes	0644
ripemd.h	4371 bytes	0644
rsa.h	30397 bytes	0644
safestack.h	202903 bytes	0644
seed.h	6040 bytes	0644
sha.h	7576 bytes	0644
srtp.h	6638 bytes	0644
ssl.h	146774 bytes	0644
ssl2.h	12049 bytes	0644
ssl23.h	3789 bytes	0644
ssl3.h	33281 bytes	0644
stack.h	4532 bytes	0644
symhacks.h	27694 bytes	0644
tls1.h	39399 bytes	0644
ts.h	34560 bytes	0644
txt_db.h	4631 bytes	0644
ui.h	18687 bytes	0644
ui_compat.h	3494 bytes	0644
whrlpool.h	1083 bytes	0644
x509.h	53315 bytes	0644
x509_vfy.h	29238 bytes	0644
x509v3.h	40389 bytes	0644
File Content: ssl.h

File Content: `ssl.h`
