ZLMediaKit/Android/app/libs/arm64-v8a/include/openssl/ssl.h

/*
 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

/* ====================================================================
 * 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>
# include <openssl/opensslconf.h>
# include <openssl/comp.h>
# include <openssl/bio.h>
# if OPENSSL_API_COMPAT < 0x10100000L
#  include <openssl/x509.h>
#  include <openssl/crypto.h>
#  include <openssl/lhash.h>
#  include <openssl/buffer.h>
# endif
# include <openssl/pem.h>
# include <openssl/hmac.h>
# include <openssl/async.h>

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

#ifdef  __cplusplus
extern "C" {
#endif

/* OpenSSL 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

# 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

/* The maximum number of encrypt/decrypt pipelines we can support */
# define SSL_MAX_PIPELINES  32

/* text strings for the ciphers */

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

# define SSL_TXT_LOW             "LOW"
# define SSL_TXT_MEDIUM          "MEDIUM"
# define SSL_TXT_HIGH            "HIGH"
# define SSL_TXT_FIPS            "FIPS"

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

# define SSL_TXT_kRSA            "kRSA"
# define SSL_TXT_kDHr            "kDHr"/* this cipher class has been removed */
# define SSL_TXT_kDHd            "kDHd"/* this cipher class has been removed */
# define SSL_TXT_kDH             "kDH"/* this cipher class has been removed */
# define SSL_TXT_kEDH            "kEDH"/* alias for kDHE */
# define SSL_TXT_kDHE            "kDHE"
# define SSL_TXT_kECDHr          "kECDHr"/* this cipher class has been removed */
# define SSL_TXT_kECDHe          "kECDHe"/* this cipher class has been removed */
# define SSL_TXT_kECDH           "kECDH"/* this cipher class has been removed */
# define SSL_TXT_kEECDH          "kEECDH"/* alias for kECDHE */
# define SSL_TXT_kECDHE          "kECDHE"
# define SSL_TXT_kPSK            "kPSK"
# define SSL_TXT_kRSAPSK         "kRSAPSK"
# define SSL_TXT_kECDHEPSK       "kECDHEPSK"
# define SSL_TXT_kDHEPSK         "kDHEPSK"
# 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"/* this cipher class has been removed */
# define SSL_TXT_aECDH           "aECDH"/* this cipher class has been removed */
# define SSL_TXT_aECDSA          "aECDSA"
# define SSL_TXT_aPSK            "aPSK"
# define SSL_TXT_aGOST94         "aGOST94"
# define SSL_TXT_aGOST01         "aGOST01"
# define SSL_TXT_aGOST12         "aGOST12"
# define SSL_TXT_aGOST           "aGOST"
# define SSL_TXT_aSRP            "aSRP"

# define SSL_TXT_DSS             "DSS"
# define SSL_TXT_DH              "DH"
# define SSL_TXT_DHE             "DHE"/* same as "kDHE:-ADH" */
# define SSL_TXT_EDH             "EDH"/* alias for DHE */
# define SSL_TXT_ADH             "ADH"
# define SSL_TXT_RSA             "RSA"
# define SSL_TXT_ECDH            "ECDH"
# define SSL_TXT_EECDH           "EECDH"/* alias for ECDHE" */
# define SSL_TXT_ECDHE           "ECDHE"/* same as "kECDHE:-AECDH" */
# define SSL_TXT_AECDH           "AECDH"
# define SSL_TXT_ECDSA           "ECDSA"
# 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_AES_CCM         "AESCCM"
# define SSL_TXT_AES_CCM_8       "AESCCM8"
# define SSL_TXT_CAMELLIA128     "CAMELLIA128"
# define SSL_TXT_CAMELLIA256     "CAMELLIA256"
# define SSL_TXT_CAMELLIA        "CAMELLIA"
# define SSL_TXT_CHACHA20        "CHACHA20"
# define SSL_TXT_GOST            "GOST89"

# 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_GOST12          "GOST12"
# define SSL_TXT_GOST89MAC12     "GOST89MAC12"
# define SSL_TXT_SHA256          "SHA256"
# define SSL_TXT_SHA384          "SHA384"

# 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_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:!COMPLEMENTOFDEFAULT:!eNULL"
/*
 * 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

# 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;
typedef struct ssl_comp_st SSL_COMP;

STACK_OF(SSL_CIPHER);
STACK_OF(SSL_COMP);

/* 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;

DEFINE_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,
                                         const SSL_CIPHER **cipher, void *arg);

/* 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);

/* Typedef for verification callback */
typedef int (*SSL_verify_cb)(int preverify_ok, X509_STORE_CTX *x509_ctx);

/* Allow initial connection to servers that don't support RI */
# define SSL_OP_LEGACY_SERVER_CONNECT                    0x00000004U
# define SSL_OP_TLSEXT_PADDING                           0x00000010U
# define SSL_OP_SAFARI_ECDHE_ECDSA_BUG                   0x00000040U

/*
 * 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              0x00000800U

/* DTLS options */
# define SSL_OP_NO_QUERY_MTU                             0x00001000U
/* Turn on Cookie Exchange (on relevant for servers) */
# define SSL_OP_COOKIE_EXCHANGE                          0x00002000U
/* Don't use RFC4507 ticket extension */
# define SSL_OP_NO_TICKET                                0x00004000U
# ifndef OPENSSL_NO_DTLS1_METHOD
/* Use Cisco's "speshul" version of DTLS_BAD_VER
 * (only with deprecated DTLSv1_client_method())  */
#  define SSL_OP_CISCO_ANYCONNECT                        0x00008000U
# endif

/* As server, disallow session resumption on renegotiation */
# define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION   0x00010000U
/* Don't use compression even if supported */
# define SSL_OP_NO_COMPRESSION                           0x00020000U
/* Permit unsafe legacy renegotiation */
# define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION        0x00040000U
/* Disable encrypt-then-mac */
# define SSL_OP_NO_ENCRYPT_THEN_MAC                      0x00080000U
/*
 * Set on servers to choose the cipher according to the server's preferences
 */
# define SSL_OP_CIPHER_SERVER_PREFERENCE                 0x00400000U
/*
 * 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                         0x00800000U

# define SSL_OP_NO_SSLv3                                 0x02000000U
# define SSL_OP_NO_TLSv1                                 0x04000000U
# define SSL_OP_NO_TLSv1_2                               0x08000000U
# define SSL_OP_NO_TLSv1_1                               0x10000000U

# define SSL_OP_NO_DTLSv1                                0x04000000U
# define SSL_OP_NO_DTLSv1_2                              0x08000000U

# define SSL_OP_NO_SSL_MASK (SSL_OP_NO_SSLv3|\
        SSL_OP_NO_TLSv1|SSL_OP_NO_TLSv1_1|SSL_OP_NO_TLSv1_2)
# define SSL_OP_NO_DTLS_MASK (SSL_OP_NO_DTLSv1|SSL_OP_NO_DTLSv1_2)

/* Disallow all renegotiation */
# define SSL_OP_NO_RENEGOTIATION                         0x40000000U

/*
 * 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                     0x80000000U

/*
 * SSL_OP_ALL: various bug workarounds that should be rather harmless.
 * This used to be 0x000FFFFFL before 0.9.7.
 * This used to be 0x80000BFFU before 1.1.1.
 */
# define SSL_OP_ALL        (SSL_OP_CRYPTOPRO_TLSEXT_BUG|\
                            SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS|\
                            SSL_OP_LEGACY_SERVER_CONNECT|\
                            SSL_OP_TLSEXT_PADDING|\
                            SSL_OP_SAFARI_ECDHE_ECDSA_BUG)

/* OBSOLETE OPTIONS: retained for compatibility */

/* Removed from OpenSSL 1.1.0. Was 0x00000001L */
/* Related to removed SSLv2. */
# define SSL_OP_MICROSOFT_SESS_ID_BUG                    0x0
/* Removed from OpenSSL 1.1.0. Was 0x00000002L */
/* Related to removed SSLv2. */
# define SSL_OP_NETSCAPE_CHALLENGE_BUG                   0x0
/* Removed from OpenSSL 0.9.8q and 1.0.0c. Was 0x00000008L */
/* Dead forever, see CVE-2010-4180 */
# define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG         0x0
/* Removed from OpenSSL 1.0.1h and 1.0.2. Was 0x00000010L */
/* Refers to ancient SSLREF and SSLv2. */
# define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG              0x0
/* Removed from OpenSSL 1.1.0. Was 0x00000020 */
# define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER               0x0
/* Removed from OpenSSL 0.9.7h and 0.9.8b. Was 0x00000040L */
# define SSL_OP_MSIE_SSLV2_RSA_PADDING                   0x0
/* Removed from OpenSSL 1.1.0. Was 0x00000080 */
/* Ancient SSLeay version. */
# define SSL_OP_SSLEAY_080_CLIENT_DH_BUG                 0x0
/* Removed from OpenSSL 1.1.0. Was 0x00000100L */
# define SSL_OP_TLS_D5_BUG                               0x0
/* Removed from OpenSSL 1.1.0. Was 0x00000200L */
# define SSL_OP_TLS_BLOCK_PADDING_BUG                    0x0
/* Removed from OpenSSL 1.1.0. Was 0x00080000L */
# define SSL_OP_SINGLE_ECDH_USE                          0x0
/* Removed from OpenSSL 1.1.0. Was 0x00100000L */
# define SSL_OP_SINGLE_DH_USE                            0x0
/* Removed from OpenSSL 1.0.1k and 1.0.2. Was 0x00200000L */
# define SSL_OP_EPHEMERAL_RSA                            0x0
/* Removed from OpenSSL 1.1.0. Was 0x01000000L */
# define SSL_OP_NO_SSLv2                                 0x0
/* Removed from OpenSSL 1.0.1. Was 0x08000000L */
# define SSL_OP_PKCS1_CHECK_1                            0x0
/* Removed from OpenSSL 1.0.1. Was 0x10000000L */
# define SSL_OP_PKCS1_CHECK_2                            0x0
/* Removed from OpenSSL 1.1.0. Was 0x20000000L */ 
# define SSL_OP_NETSCAPE_CA_DN_BUG                       0x0
/* Removed from OpenSSL 1.1.0. Was 0x40000000L */
# define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG          0x0

/*
 * 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       0x00000001U
/*
 * 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 0x00000002U
/*
 * Never bother the application with retries if the transport is blocking:
 */
# define SSL_MODE_AUTO_RETRY 0x00000004U
/* Don't attempt to automatically build certificate chain */
# define SSL_MODE_NO_AUTO_CHAIN 0x00000008U
/*
 * 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 0x00000010U
/*
 * 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 0x00000020U
# define SSL_MODE_SEND_SERVERHELLO_TIME 0x00000040U
/*
 * 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 0x00000080U
/*
 * Support Asynchronous operation
 */
# define SSL_MODE_ASYNC 0x00000100U

/* Cert related flags */
/*
 * Many implementations ignore some aspects of the TLS standards such as
 * enforcing certificate chain algorithms. When this is set we enforce them.
 */
# define SSL_CERT_FLAG_TLS_STRICT                0x00000001U

/* 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
# define SSL_CONF_FLAG_REQUIRE_PRIVATE   0x40
/* 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
# define SSL_CONF_TYPE_NONE              0x4

/*
 * Note: SSL[_CTX]_set_{options,mode} use |= op on the previous value, they
 * cannot be used to clear bits.
 */

unsigned long SSL_CTX_get_options(const SSL_CTX *ctx);
unsigned long SSL_get_options(const SSL* s);
unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op);
unsigned long SSL_clear_options(SSL *s, unsigned long op);
unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op);
unsigned long SSL_set_options(SSL *s, unsigned long op);

# 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)