/* ssl/ssl.h */

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 * 

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 * 

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 * 

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from 

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 * 

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 * 

 * The licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

/* ====================================================================

 * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer. 

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * 3. All advertising materials mentioning features or use of this

 *    software must display the following acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"

 *

 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

 *    endorse or promote products derived from this software without

 *    prior written permission. For written permission, please contact

 *    openssl-core@openssl.org.

 *

 * 5. Products derived from this software may not be called "OpenSSL"

 *    nor may "OpenSSL" appear in their names without prior written

 *    permission of the OpenSSL Project.

 *

 * 6. Redistributions of any form whatsoever must retain the following

 *    acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"

 *

 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR

 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

 * OF THE POSSIBILITY OF SUCH DAMAGE.

 * ====================================================================

 *

 * This product includes cryptographic software written by Eric Young

 * (eay@cryptsoft.com).  This product includes software written by Tim

 * Hudson (tjh@cryptsoft.com).

 *

 */

/* ====================================================================

 * Copyright (c) 1998-2002 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).

 *

 */

#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_X509

#include <openssl/x509.h>

#endif

#include <openssl/kssl.h>

#include <openssl/safestack.h>

#include <openssl/symhacks.h>

#ifdef  __cplusplus

extern "C" {

#endif

/* SSLeay version number for ASN.1 encoding of the session information */

/* Version 0 - initial version

 * Version 1 - added the optional peer certificate

 */

#define SSL_SESSION_ASN1_VERSION 0x0001

/* text strings for the ciphers */

#define SSL_TXT_NULL_WITH_MD5		SSL2_TXT_NULL_WITH_MD5			

#define SSL_TXT_RC4_128_WITH_MD5	SSL2_TXT_RC4_128_WITH_MD5		

#define SSL_TXT_RC4_128_EXPORT40_WITH_MD5 SSL2_TXT_RC4_128_EXPORT40_WITH_MD5	

#define SSL_TXT_RC2_128_CBC_WITH_MD5	SSL2_TXT_RC2_128_CBC_WITH_MD5		

#define SSL_TXT_RC2_128_CBC_EXPORT40_WITH_MD5 SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5	

#define SSL_TXT_IDEA_128_CBC_WITH_MD5	SSL2_TXT_IDEA_128_CBC_WITH_MD5		

#define SSL_TXT_DES_64_CBC_WITH_MD5	SSL2_TXT_DES_64_CBC_WITH_MD5		

#define SSL_TXT_DES_64_CBC_WITH_SHA	SSL2_TXT_DES_64_CBC_WITH_SHA		

#define SSL_TXT_DES_192_EDE3_CBC_WITH_MD5 SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5	

#define SSL_TXT_DES_192_EDE3_CBC_WITH_SHA SSL2_TXT_DES_192_EDE3_CBC_WITH_SHA	

/*    VRS Additional Kerberos5 entries

 */

#define SSL_TXT_KRB5_DES_64_CBC_SHA   SSL3_TXT_KRB5_DES_64_CBC_SHA

#define SSL_TXT_KRB5_DES_192_CBC3_SHA SSL3_TXT_KRB5_DES_192_CBC3_SHA

#define SSL_TXT_KRB5_RC4_128_SHA      SSL3_TXT_KRB5_RC4_128_SHA

#define SSL_TXT_KRB5_IDEA_128_CBC_SHA SSL3_TXT_KRB5_IDEA_128_CBC_SHA

#define SSL_TXT_KRB5_DES_64_CBC_MD5   SSL3_TXT_KRB5_DES_64_CBC_MD5       

#define SSL_TXT_KRB5_DES_192_CBC3_MD5 SSL3_TXT_KRB5_DES_192_CBC3_MD5       

#define SSL_TXT_KRB5_RC4_128_MD5      SSL3_TXT_KRB5_RC4_128_MD5

#define SSL_TXT_KRB5_IDEA_128_CBC_MD5 SSL3_TXT_KRB5_IDEA_128_CBC_MD5 

#define SSL_TXT_KRB5_DES_40_CBC_SHA   SSL3_TXT_KRB5_DES_40_CBC_SHA 

#define SSL_TXT_KRB5_RC2_40_CBC_SHA   SSL3_TXT_KRB5_RC2_40_CBC_SHA 

#define SSL_TXT_KRB5_RC4_40_SHA	      SSL3_TXT_KRB5_RC4_40_SHA

#define SSL_TXT_KRB5_DES_40_CBC_MD5   SSL3_TXT_KRB5_DES_40_CBC_MD5 

#define SSL_TXT_KRB5_RC2_40_CBC_MD5   SSL3_TXT_KRB5_RC2_40_CBC_MD5 

#define SSL_TXT_KRB5_RC4_40_MD5	      SSL3_TXT_KRB5_RC4_40_MD5

#define SSL_TXT_KRB5_DES_40_CBC_SHA   SSL3_TXT_KRB5_DES_40_CBC_SHA

#define SSL_TXT_KRB5_DES_40_CBC_MD5   SSL3_TXT_KRB5_DES_40_CBC_MD5

#define SSL_TXT_KRB5_DES_64_CBC_SHA   SSL3_TXT_KRB5_DES_64_CBC_SHA

#define SSL_TXT_KRB5_DES_64_CBC_MD5   SSL3_TXT_KRB5_DES_64_CBC_MD5

#define SSL_TXT_KRB5_DES_192_CBC3_SHA SSL3_TXT_KRB5_DES_192_CBC3_SHA

#define SSL_TXT_KRB5_DES_192_CBC3_MD5 SSL3_TXT_KRB5_DES_192_CBC3_MD5

#define SSL_MAX_KRB5_PRINCIPAL_LENGTH  256

#define SSL_MAX_SSL_SESSION_ID_LENGTH		32

#define SSL_MAX_SID_CTX_LENGTH			32

#define SSL_MIN_RSA_MODULUS_LENGTH_IN_BYTES	(512/8)

#define SSL_MAX_KEY_ARG_LENGTH			8

#define SSL_MAX_MASTER_KEY_LENGTH		48

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

#define SSL_TXT_LOW		"LOW"

#define SSL_TXT_MEDIUM		"MEDIUM"

#define SSL_TXT_HIGH		"HIGH"

#define SSL_TXT_kFZA		"kFZA"

#define	SSL_TXT_aFZA		"aFZA"

#define SSL_TXT_eFZA		"eFZA"

#define SSL_TXT_FZA		"FZA"

#define	SSL_TXT_aNULL		"aNULL"

#define	SSL_TXT_eNULL		"eNULL"

#define	SSL_TXT_NULL		"NULL"

#define SSL_TXT_kKRB5     	"kKRB5"

#define SSL_TXT_aKRB5     	"aKRB5"

#define SSL_TXT_KRB5      	"KRB5"

#define SSL_TXT_kRSA		"kRSA"

#define SSL_TXT_kDHr		"kDHr"

#define SSL_TXT_kDHd		"kDHd"

#define SSL_TXT_kEDH		"kEDH"

#define	SSL_TXT_aRSA		"aRSA"

#define	SSL_TXT_aDSS		"aDSS"

#define	SSL_TXT_aDH		"aDH"

#define	SSL_TXT_DSS		"DSS"

#define SSL_TXT_DH		"DH"

#define SSL_TXT_EDH		"EDH"

#define SSL_TXT_ADH		"ADH"

#define SSL_TXT_RSA		"RSA"

#define SSL_TXT_DES		"DES"

#define SSL_TXT_3DES		"3DES"

#define SSL_TXT_RC4		"RC4"

#define SSL_TXT_RC2		"RC2"

#define SSL_TXT_IDEA		"IDEA"

#define SSL_TXT_AES		"AES"

#define SSL_TXT_MD5		"MD5"

#define SSL_TXT_SHA1		"SHA1"

#define SSL_TXT_SHA		"SHA"

#define SSL_TXT_EXP		"EXP"

#define SSL_TXT_EXPORT		"EXPORT"

#define SSL_TXT_EXP40		"EXPORT40"

#define SSL_TXT_EXP56		"EXPORT56"

#define SSL_TXT_SSLV2		"SSLv2"

#define SSL_TXT_SSLV3		"SSLv3"

#define SSL_TXT_TLSV1		"TLSv1"

#define SSL_TXT_ALL		"ALL"

/*

 * 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:!ADH:+RC4:@STRENGTH" /* low priority for RC4 */

/* Used in SSL_set_shutdown()/SSL_get_shutdown(); */

#define SSL_SENT_SHUTDOWN	1

#define SSL_RECEIVED_SHUTDOWN	2

#ifdef __cplusplus

}

#endif

#include <openssl/crypto.h>

#include <openssl/lhash.h>

#include <openssl/buffer.h>

#include <openssl/pem.h>

#ifdef  __cplusplus

extern "C" {

#endif

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

#define OPENSSL_NO_SSL2

#endif

#define SSL_FILETYPE_ASN1	X509_FILETYPE_ASN1

#define SSL_FILETYPE_PEM	X509_FILETYPE_PEM

/* This is needed to stop compilers complaining about the

 * 'struct ssl_st *' function parameters used to prototype callbacks

 * in SSL_CTX. */

typedef struct ssl_st *ssl_crock_st;

/* used to hold info on the particular ciphers used */

typedef struct ssl_cipher_st

	{

	int valid;

	const char *name;		/* text name */

	unsigned long id;		/* id, 4 bytes, first is version */

	unsigned long algorithms;	/* what ciphers are used */

	unsigned long algo_strength;	/* strength and export flags */

	unsigned long algorithm2;	/* Extra flags */

	int strength_bits;		/* Number of bits really used */

	int alg_bits;			/* Number of bits for algorithm */

	unsigned long mask;		/* used for matching */

	unsigned long mask_strength;	/* also used for matching */

	} SSL_CIPHER;

DECLARE_STACK_OF(SSL_CIPHER)

typedef struct ssl_st SSL;

typedef struct ssl_ctx_st SSL_CTX;

/* Used to hold functions for SSLv2 or SSLv3/TLSv1 functions */

typedef struct ssl_method_st

	{

	int version;

	int (*ssl_new)(SSL *s);

	void (*ssl_clear)(SSL *s);

	void (*ssl_free)(SSL *s);

	int (*ssl_accept)(SSL *s);

	int (*ssl_connect)(SSL *s);

	int (*ssl_read)(SSL *s,void *buf,int len);

	int (*ssl_peek)(SSL *s,void *buf,int len);

	int (*ssl_write)(SSL *s,const void *buf,int len);

	int (*ssl_shutdown)(SSL *s);

	int (*ssl_renegotiate)(SSL *s);

	int (*ssl_renegotiate_check)(SSL *s);

	long (*ssl_ctrl)(SSL *s,int cmd,long larg,void *parg);

	long (*ssl_ctx_ctrl)(SSL_CTX *ctx,int cmd,long larg,void *parg);

	SSL_CIPHER *(*get_cipher_by_char)(const unsigned char *ptr);

	int (*put_cipher_by_char)(const SSL_CIPHER *cipher,unsigned char *ptr);

	int (*ssl_pending)(SSL *s);

	int (*num_ciphers)(void);

	SSL_CIPHER *(*get_cipher)(unsigned ncipher);

	struct ssl_method_st *(*get_ssl_method)(int version);

	long (*get_timeout)(void);

	struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */

	int (*ssl_version)();

	long (*ssl_callback_ctrl)(SSL *s, int cb_id, void (*fp)());

	long (*ssl_ctx_callback_ctrl)(SSL_CTX *s, int cb_id, void (*fp)());

	} SSL_METHOD;

/* Lets make this into an ASN.1 type structure as follows

 * SSL_SESSION_ID ::= SEQUENCE {

 *	version 		INTEGER,	-- structure version number

 *	SSLversion 		INTEGER,	-- SSL version number

 *	Cipher 			OCTET_STRING,	-- the 3 byte cipher ID

 *	Session_ID 		OCTET_STRING,	-- the Session ID

 *	Master_key 		OCTET_STRING,	-- the master key

 *	KRB5_principal		OCTET_STRING	-- optional Kerberos principal

 *	Key_Arg [ 0 ] IMPLICIT	OCTET_STRING,	-- the optional Key argument

 *	Time [ 1 ] EXPLICIT	INTEGER,	-- optional Start Time

 *	Timeout [ 2 ] EXPLICIT	INTEGER,	-- optional Timeout ins seconds

 *	Peer [ 3 ] EXPLICIT	X509,		-- optional Peer Certificate

 *	Session_ID_context [ 4 ] EXPLICIT OCTET_STRING,   -- the Session ID context

 *	Verify_result [ 5 ] EXPLICIT INTEGER    -- X509_V_... code for `Peer'

 *	Compression [6] IMPLICIT ASN1_OBJECT	-- compression OID XXXXX

 *	}

 * Look in ssl/ssl_asn1.c for more details

 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).

 */

typedef struct ssl_session_st

	{

	int ssl_version;	/* what ssl version session info is

				 * being kept in here? */

	/* only really used in SSLv2 */

	unsigned int key_arg_length;

	unsigned char key_arg[SSL_MAX_KEY_ARG_LENGTH];

	int master_key_length;

	unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];

	/* session_id - valid? */

	unsigned int session_id_length;

	unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];

	/* this is used to determine whether the session is being reused in

	 * the appropriate context. It is up to the application to set this,

	 * via SSL_new */

	unsigned int sid_ctx_length;

	unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];

#ifndef OPENSSL_NO_KRB5

        unsigned int krb5_client_princ_len;

        unsigned char krb5_client_princ[SSL_MAX_KRB5_PRINCIPAL_LENGTH];

#endif /* OPENSSL_NO_KRB5 */

	int not_resumable;

	/* The cert is the certificate used to establish this connection */

	struct sess_cert_st /* SESS_CERT */ *sess_cert;

	/* This is the cert for the other end.

	 * On clients, it will be the same as sess_cert->peer_key->x509

	 * (the latter is not enough as sess_cert is not retained

	 * in the external representation of sessions, see ssl_asn1.c). */

	X509 *peer;

	/* when app_verify_callback accepts a session where the peer's certificate

	 * is not ok, we must remember the error for session reuse: */

	long verify_result; /* only for servers */

	int references;

	long timeout;

	long time;

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

	SSL_CIPHER *cipher;

	unsigned long cipher_id;	/* when ASN.1 loaded, this

					 * needs to be used to load

					 * the 'cipher' structure */

	STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */

	CRYPTO_EX_DATA ex_data; /* application specific data */

	/* These are used to make removal of session-ids more

	 * efficient and to implement a maximum cache size. */

	struct ssl_session_st *prev,*next;

	} SSL_SESSION;

#define SSL_OP_MICROSOFT_SESS_ID_BUG			0x00000001L

#define SSL_OP_NETSCAPE_CHALLENGE_BUG			0x00000002L

#define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG		0x00000008L

#define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG		0x00000010L

#define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER		0x00000020L

#define SSL_OP_MSIE_SSLV2_RSA_PADDING			0x00000040L

#define SSL_OP_SSLEAY_080_CLIENT_DH_BUG			0x00000080L

#define SSL_OP_TLS_D5_BUG				0x00000100L

#define SSL_OP_TLS_BLOCK_PADDING_BUG			0x00000200L

/* Disable SSL 3.0/TLS 1.0 CBC vulnerability workaround that was added

 * in OpenSSL 0.9.6d.  Usually (depending on the application protocol)

 * the workaround is not needed.  Unfortunately some broken SSL/TLS

 * implementations cannot handle it at all, which is why we include

 * it in SSL_OP_ALL. */

#define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS              0x00000800L /* added in 0.9.6e */

/* SSL_OP_ALL: various bug workarounds that should be rather harmless.

 *             This used to be 0x000FFFFFL before 0.9.7. */

#define SSL_OP_ALL					0x00000FFFL

/* As server, disallow session resumption on renegotiation */

#define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION	0x00010000L

/* If set, always create a new key when using tmp_dh parameters */

#define SSL_OP_SINGLE_DH_USE				0x00100000L

/* Set to always use the tmp_rsa key when doing RSA operations,

 * even when this violates protocol specs */

#define SSL_OP_EPHEMERAL_RSA				0x00200000L

/* Set on servers to choose the cipher according to the server's

 * preferences */

#define SSL_OP_CIPHER_SERVER_PREFERENCE			0x00400000L

/* If set, a server will allow a client to issue a SSLv3.0 version number

 * as latest version supported in the premaster secret, even when TLSv1.0

 * (version 3.1) was announced in the client hello. Normally this is

 * forbidden to prevent version rollback attacks. */

#define SSL_OP_TLS_ROLLBACK_BUG				0x00800000L

#define SSL_OP_NO_SSLv2					0x01000000L

#define SSL_OP_NO_SSLv3					0x02000000L

#define SSL_OP_NO_TLSv1					0x04000000L

/* The next flag deliberately changes the ciphertest, this is a check

 * for the PKCS#1 attack */

#define SSL_OP_PKCS1_CHECK_1				0x08000000L

#define SSL_OP_PKCS1_CHECK_2				0x10000000L

#define SSL_OP_NETSCAPE_CA_DN_BUG			0x20000000L

#define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG		0x40000000L

/* Allow SSL_write(..., n) to return r with 0 < r < n (i.e. report success

 * when just a single record has been written): */

#define SSL_MODE_ENABLE_PARTIAL_WRITE       0x00000001L

/* Make it possible to retry SSL_write() with changed buffer location

 * (buffer contents must stay the same!); this is not the default to avoid

 * the misconception that non-blocking SSL_write() behaves like

 * non-blocking write(): */

#define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002L

/* Never bother the application with retries if the transport

 * is blocking: */

#define SSL_MODE_AUTO_RETRY 0x00000004L

/* Don't attempt to automatically build certificate chain */

#define SSL_MODE_NO_AUTO_CHAIN 0x00000008L

/* Note: SSL[_CTX]_set_{options,mode} use |= op on the previous value,