text: /* ssl/ssl3.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) 1998-2002 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).
   *
   */
  /* ====================================================================
   * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
   * ECC cipher suite support in OpenSSL originally developed by 
   * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
   */
  
  #ifndef HEADER_SSL3_H 
  #define HEADER_SSL3_H 
  
  #ifndef OPENSSL_NO_COMP
  #include <openssl/comp.h>
  #endif
  #include <openssl/buffer.h>
  #include <openssl/evp.h>
  #include <openssl/ssl.h>
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  /* Signalling cipher suite value: from draft-ietf-tls-renegotiation-03.txt */
  #define SSL3_CK_SCSV				0x030000FF
  
  #define SSL3_CK_RSA_NULL_MD5			0x03000001
  #define SSL3_CK_RSA_NULL_SHA			0x03000002
  #define SSL3_CK_RSA_RC4_40_MD5 			0x03000003
  #define SSL3_CK_RSA_RC4_128_MD5			0x03000004
  #define SSL3_CK_RSA_RC4_128_SHA			0x03000005
  #define SSL3_CK_RSA_RC2_40_MD5			0x03000006
  #define SSL3_CK_RSA_IDEA_128_SHA		0x03000007
  #define SSL3_CK_RSA_DES_40_CBC_SHA		0x03000008
  #define SSL3_CK_RSA_DES_64_CBC_SHA		0x03000009
  #define SSL3_CK_RSA_DES_192_CBC3_SHA		0x0300000A
  
  #define SSL3_CK_DH_DSS_DES_40_CBC_SHA		0x0300000B
  #define SSL3_CK_DH_DSS_DES_64_CBC_SHA		0x0300000C
  #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 	0x0300000D
  #define SSL3_CK_DH_RSA_DES_40_CBC_SHA		0x0300000E
  #define SSL3_CK_DH_RSA_DES_64_CBC_SHA		0x0300000F
  #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 	0x03000010
  
  #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA		0x03000011
  #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA		0x03000012
  #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA	0x03000013
  #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA		0x03000014
  #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA		0x03000015
  #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA	0x03000016
  
  #define SSL3_CK_ADH_RC4_40_MD5			0x03000017
  #define SSL3_CK_ADH_RC4_128_MD5			0x03000018
  #define SSL3_CK_ADH_DES_40_CBC_SHA		0x03000019
  #define SSL3_CK_ADH_DES_64_CBC_SHA		0x0300001A
  #define SSL3_CK_ADH_DES_192_CBC_SHA		0x0300001B
  
  #if 0
  	#define SSL3_CK_FZA_DMS_NULL_SHA		0x0300001C
  	#define SSL3_CK_FZA_DMS_FZA_SHA			0x0300001D
  	#if 0 /* Because it clashes with KRB5, is never used any more, and is safe
  		 to remove according to David Hopwood <david.hopwood@zetnet.co.uk>
  		 of the ietf-tls list */
  	#define SSL3_CK_FZA_DMS_RC4_SHA			0x0300001E
  	#endif
  #endif
  
  /*    VRS Additional Kerberos5 entries
   */
  #define SSL3_CK_KRB5_DES_64_CBC_SHA		0x0300001E
  #define SSL3_CK_KRB5_DES_192_CBC3_SHA		0x0300001F
  #define SSL3_CK_KRB5_RC4_128_SHA		0x03000020
  #define SSL3_CK_KRB5_IDEA_128_CBC_SHA	       	0x03000021
  #define SSL3_CK_KRB5_DES_64_CBC_MD5       	0x03000022
  #define SSL3_CK_KRB5_DES_192_CBC3_MD5       	0x03000023
  #define SSL3_CK_KRB5_RC4_128_MD5	       	0x03000024
  #define SSL3_CK_KRB5_IDEA_128_CBC_MD5 		0x03000025
  
  #define SSL3_CK_KRB5_DES_40_CBC_SHA 		0x03000026
  #define SSL3_CK_KRB5_RC2_40_CBC_SHA 		0x03000027
  #define SSL3_CK_KRB5_RC4_40_SHA	 		0x03000028
  #define SSL3_CK_KRB5_DES_40_CBC_MD5 		0x03000029
  #define SSL3_CK_KRB5_RC2_40_CBC_MD5 		0x0300002A
  #define SSL3_CK_KRB5_RC4_40_MD5	 		0x0300002B
  
  #define SSL3_TXT_RSA_NULL_MD5			"NULL-MD5"
  #define SSL3_TXT_RSA_NULL_SHA			"NULL-SHA"
  #define SSL3_TXT_RSA_RC4_40_MD5 		"EXP-RC4-MD5"
  #define SSL3_TXT_RSA_RC4_128_MD5		"RC4-MD5"
  #define SSL3_TXT_RSA_RC4_128_SHA		"RC4-SHA"
  #define SSL3_TXT_RSA_RC2_40_MD5			"EXP-RC2-CBC-MD5"
  #define SSL3_TXT_RSA_IDEA_128_SHA		"IDEA-CBC-SHA"
  #define SSL3_TXT_RSA_DES_40_CBC_SHA		"EXP-DES-CBC-SHA"
  #define SSL3_TXT_RSA_DES_64_CBC_SHA		"DES-CBC-SHA"
  #define SSL3_TXT_RSA_DES_192_CBC3_SHA		"DES-CBC3-SHA"
  
  #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA		"EXP-DH-DSS-DES-CBC-SHA"
  #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA		"DH-DSS-DES-CBC-SHA"
  #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA 	"DH-DSS-DES-CBC3-SHA"
  #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA		"EXP-DH-RSA-DES-CBC-SHA"
  #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA		"DH-RSA-DES-CBC-SHA"
  #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA 	"DH-RSA-DES-CBC3-SHA"
  
  #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA		"EXP-EDH-DSS-DES-CBC-SHA"
  #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA		"EDH-DSS-DES-CBC-SHA"
  #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA	"EDH-DSS-DES-CBC3-SHA"
  #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA		"EXP-EDH-RSA-DES-CBC-SHA"
  #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA		"EDH-RSA-DES-CBC-SHA"
  #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA	"EDH-RSA-DES-CBC3-SHA"
  
  #define SSL3_TXT_ADH_RC4_40_MD5			"EXP-ADH-RC4-MD5"
  #define SSL3_TXT_ADH_RC4_128_MD5		"ADH-RC4-MD5"
  #define SSL3_TXT_ADH_DES_40_CBC_SHA		"EXP-ADH-DES-CBC-SHA"
  #define SSL3_TXT_ADH_DES_64_CBC_SHA		"ADH-DES-CBC-SHA"
  #define SSL3_TXT_ADH_DES_192_CBC_SHA		"ADH-DES-CBC3-SHA"
  
  #if 0
  	#define SSL3_TXT_FZA_DMS_NULL_SHA		"FZA-NULL-SHA"
  	#define SSL3_TXT_FZA_DMS_FZA_SHA		"FZA-FZA-CBC-SHA"
  	#define SSL3_TXT_FZA_DMS_RC4_SHA		"FZA-RC4-SHA"
  #endif
  
  #define SSL3_TXT_KRB5_DES_64_CBC_SHA		"KRB5-DES-CBC-SHA"
  #define SSL3_TXT_KRB5_DES_192_CBC3_SHA		"KRB5-DES-CBC3-SHA"
  #define SSL3_TXT_KRB5_RC4_128_SHA		"KRB5-RC4-SHA"
  #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA	       	"KRB5-IDEA-CBC-SHA"
  #define SSL3_TXT_KRB5_DES_64_CBC_MD5       	"KRB5-DES-CBC-MD5"
  #define SSL3_TXT_KRB5_DES_192_CBC3_MD5       	"KRB5-DES-CBC3-MD5"
  #define SSL3_TXT_KRB5_RC4_128_MD5		"KRB5-RC4-MD5"
  #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 		"KRB5-IDEA-CBC-MD5"
  
  #define SSL3_TXT_KRB5_DES_40_CBC_SHA 		"EXP-KRB5-DES-CBC-SHA"
  #define SSL3_TXT_KRB5_RC2_40_CBC_SHA 		"EXP-KRB5-RC2-CBC-SHA"
  #define SSL3_TXT_KRB5_RC4_40_SHA	 	"EXP-KRB5-RC4-SHA"
  #define SSL3_TXT_KRB5_DES_40_CBC_MD5 		"EXP-KRB5-DES-CBC-MD5"
  #define SSL3_TXT_KRB5_RC2_40_CBC_MD5 		"EXP-KRB5-RC2-CBC-MD5"
  #define SSL3_TXT_KRB5_RC4_40_MD5	 	"EXP-KRB5-RC4-MD5"
  
  #define SSL3_SSL_SESSION_ID_LENGTH		32
  #define SSL3_MAX_SSL_SESSION_ID_LENGTH		32
  
  #define SSL3_MASTER_SECRET_SIZE			48
  #define SSL3_RANDOM_SIZE			32
  #define SSL3_SESSION_ID_SIZE			32
  #define SSL3_RT_HEADER_LENGTH			5
  
  #ifndef SSL3_ALIGN_PAYLOAD
   /* Some will argue that this increases memory footprint, but it's
    * not actually true. Point is that malloc has to return at least
    * 64-bit aligned pointers, meaning that allocating 5 bytes wastes
    * 3 bytes in either case. Suggested pre-gaping simply moves these
    * wasted bytes from the end of allocated region to its front,
    * but makes data payload aligned, which improves performance:-) */
  # define SSL3_ALIGN_PAYLOAD			8
  #else
  # if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0
  #  error "insane SSL3_ALIGN_PAYLOAD"
  #  undef SSL3_ALIGN_PAYLOAD
  # endif
  #endif
  
  /* This is the maximum MAC (digest) size used by the SSL library.
   * Currently maximum of 20 is used by SHA1, but we reserve for
   * future extension for 512-bit hashes.
   */
  
  #define SSL3_RT_MAX_MD_SIZE			64
  
  /* Maximum block size used in all ciphersuites. Currently 16 for AES.
   */
  
  #define	SSL_RT_MAX_CIPHER_BLOCK_SIZE		16
  
  #define SSL3_RT_MAX_EXTRA			(16384)
  
  /* Maximum plaintext length: defined by SSL/TLS standards */
  #define SSL3_RT_MAX_PLAIN_LENGTH		16384
  /* Maximum compression overhead: defined by SSL/TLS standards */
  #define SSL3_RT_MAX_COMPRESSED_OVERHEAD		1024
  
  /* The standards give a maximum encryption overhead of 1024 bytes.
   * In practice the value is lower than this. The overhead is the maximum
   * number of padding bytes (256) plus the mac size.
   */
  #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD	(256 + SSL3_RT_MAX_MD_SIZE)
  
  /* OpenSSL currently only uses a padding length of at most one block so
   * the send overhead is smaller.
   */
  
  #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
  			(SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE)
  
  /* If compression isn't used don't include the compression overhead */
  
  #ifdef OPENSSL_NO_COMP
  #define SSL3_RT_MAX_COMPRESSED_LENGTH		SSL3_RT_MAX_PLAIN_LENGTH
  #else
  #define SSL3_RT_MAX_COMPRESSED_LENGTH	\
  		(SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD)
  #endif
  #define SSL3_RT_MAX_ENCRYPTED_LENGTH	\
  		(SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH)
  #define SSL3_RT_MAX_PACKET_SIZE		\
  		(SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
  
  #define SSL3_MD_CLIENT_FINISHED_CONST	"\x43\x4C\x4E\x54"
  #define SSL3_MD_SERVER_FINISHED_CONST	"\x53\x52\x56\x52"
  
  #define SSL3_VERSION			0x0300
  #define SSL3_VERSION_MAJOR		0x03
  #define SSL3_VERSION_MINOR		0x00
  
  #define SSL3_RT_CHANGE_CIPHER_SPEC	20
  #define SSL3_RT_ALERT			21
  #define SSL3_RT_HANDSHAKE		22
  #define SSL3_RT_APPLICATION_DATA	23
  #define TLS1_RT_HEARTBEAT		24
  
  #define SSL3_AL_WARNING			1
  #define SSL3_AL_FATAL			2
  
  #define SSL3_AD_CLOSE_NOTIFY		 0
  #define SSL3_AD_UNEXPECTED_MESSAGE	10	/* fatal */
  #define SSL3_AD_BAD_RECORD_MAC		20	/* fatal */
  #define SSL3_AD_DECOMPRESSION_FAILURE	30	/* fatal */
  #define SSL3_AD_HANDSHAKE_FAILURE	40	/* fatal */
  #define SSL3_AD_NO_CERTIFICATE		41
  #define SSL3_AD_BAD_CERTIFICATE		42
  #define SSL3_AD_UNSUPPORTED_CERTIFICATE	43
  #define SSL3_AD_CERTIFICATE_REVOKED	44
  #define SSL3_AD_CERTIFICATE_EXPIRED	45
  #define SSL3_AD_CERTIFICATE_UNKNOWN	46
  #define SSL3_AD_ILLEGAL_PARAMETER	47	/* fatal */
  
  #define TLS1_HB_REQUEST		1
  #define TLS1_HB_RESPONSE	2
  	
  #ifndef OPENSSL_NO_SSL_INTERN
  
  typedef struct ssl3_record_st
  	{
  /*r */	int type;               /* type of record */
  /*rw*/	unsigned int length;    /* How many bytes available */
  /*r */	unsigned int off;       /* read/write offset into 'buf' */
  /*rw*/	unsigned char *data;    /* pointer to the record data */
  /*rw*/	unsigned char *input;   /* where the decode bytes are */
  /*r */	unsigned char *comp;    /* only used with decompression - malloc()ed */
  /*r */  unsigned long epoch;    /* epoch number, needed by DTLS1 */
  /*r */  unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */
  	} SSL3_RECORD;
  
  typedef struct ssl3_buffer_st
  	{
  	unsigned char *buf;     /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
  	                         * see ssl3_setup_buffers() */
  	size_t len;             /* buffer size */
  	int offset;             /* where to 'copy from' */
  	int left;               /* how many bytes left */
  	} SSL3_BUFFER;
  
  #endif
  
  #define SSL3_CT_RSA_SIGN			1
  #define SSL3_CT_DSS_SIGN			2
  #define SSL3_CT_RSA_FIXED_DH			3
  #define SSL3_CT_DSS_FIXED_DH			4
  #define SSL3_CT_RSA_EPHEMERAL_DH		5
  #define SSL3_CT_DSS_EPHEMERAL_DH		6
  #define SSL3_CT_FORTEZZA_DMS			20
  /* SSL3_CT_NUMBER is used to size arrays and it must be large
   * enough to contain all of the cert types defined either for
   * SSLv3 and TLSv1.
   */
  #define SSL3_CT_NUMBER			9
  
  
  #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS	0x0001
  #define SSL3_FLAGS_DELAY_CLIENT_FINISHED	0x0002
  #define SSL3_FLAGS_POP_BUFFER			0x0004
  #define TLS1_FLAGS_TLS_PADDING_BUG		0x0008
  #define TLS1_FLAGS_SKIP_CERT_VERIFY		0x0010
  #define TLS1_FLAGS_KEEP_HANDSHAKE		0x0020
   
  /* SSL3_FLAGS_SGC_RESTART_DONE is set when we
   * restart a handshake because of MS SGC and so prevents us
   * from restarting the handshake in a loop. It's reset on a
   * renegotiation, so effectively limits the client to one restart
   * per negotiation. This limits the possibility of a DDoS
   * attack where the client handshakes in a loop using SGC to
   * restart. Servers which permit renegotiation can still be
   * effected, but we can't prevent that.
   */
  #define SSL3_FLAGS_SGC_RESTART_DONE		0x0040
  
  #ifndef OPENSSL_NO_SSL_INTERN
  
  typedef struct ssl3_state_st
  	{
  	long flags;
  	int delay_buf_pop_ret;
  
  	unsigned char read_sequence[8];
  	int read_mac_secret_size;
  	unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
  	unsigned char write_sequence[8];
  	int write_mac_secret_size;
  	unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
  
  	unsigned char server_random[SSL3_RANDOM_SIZE];
  	unsigned char client_random[SSL3_RANDOM_SIZE];
  
  	/* flags for countermeasure against known-IV weakness */
  	int need_empty_fragments;
  	int empty_fragment_done;
  
  	/* The value of 'extra' when the buffers were initialized */
  	int init_extra;
  
  	SSL3_BUFFER rbuf;	/* read IO goes into here */
  	SSL3_BUFFER wbuf;	/* write IO goes into here */
  
  	SSL3_RECORD rrec;	/* each decoded record goes in here */
  	SSL3_RECORD wrec;	/* goes out from here */
  
  	/* storage for Alert/Handshake protocol data received but not
  	 * yet processed by ssl3_read_bytes: */
  	unsigned char alert_fragment[2];
  	unsigned int alert_fragment_len;
  	unsigned char handshake_fragment[4];
  	unsigned int handshake_fragment_len;
  
  	/* partial write - check the numbers match */
  	unsigned int wnum;	/* number of bytes sent so far */
  	int wpend_tot;		/* number bytes written */
  	int wpend_type;
  	int wpend_ret;		/* number of bytes submitted */
  	const unsigned char *wpend_buf;
  
  	/* used during startup, digest all incoming/outgoing packets */
  	BIO *handshake_buffer;
  	/* When set of handshake digests is determined, buffer is hashed
  	 * and freed and MD_CTX-es for all required digests are stored in
  	 * this array */
  	EVP_MD_CTX **handshake_dgst;
  	/* this is set whenerver we see a change_cipher_spec message
  	 * come in when we are not looking for one */
  	int change_cipher_spec;
  
  	int warn_alert;
  	int fatal_alert;
  	/* we allow one fatal and one warning alert to be outstanding,
  	 * send close alert via the warning alert */
  	int alert_dispatch;
  	unsigned char send_alert[2];
  
  	/* This flag is set when we should renegotiate ASAP, basically when
  	 * there is no more data in the read or write buffers */
  	int renegotiate;
  	int total_renegotiations;
  	int num_renegotiations;
  
  	int in_read_app_data;
  
  	/* Opaque PRF input as used for the current handshake.
  	 * These fields are used only if TLSEXT_TYPE_opaque_prf_input is defined
  	 * (otherwise, they are merely present to improve binary compatibility) */
  	void *client_opaque_prf_input;
  	size_t client_opaque_prf_input_len;
  	void *server_opaque_prf_input;
  	size_t server_opaque_prf_input_len;
  
  	struct	{
  		/* actually only needs to be 16+20 */
  		unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
  
  		/* actually only need to be 16+20 for SSLv3 and 12 for TLS */
  		unsigned char finish_md[EVP_MAX_MD_SIZE*2];
  		int finish_md_len;
  		unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
  		int peer_finish_md_len;
  
  		unsigned long message_size;
  		int message_type;
  
  		/* used to hold the new cipher we are going to use */
  		const SSL_CIPHER *new_cipher;
  #ifndef OPENSSL_NO_DH
  		DH *dh;
  #endif
  
  #ifndef OPENSSL_NO_ECDH
  		EC_KEY *ecdh; /* holds short lived ECDH key */
  #endif
  
  		/* used when SSL_ST_FLUSH_DATA is entered */
  		int next_state;			
  
  		int reuse_message;
  
  		/* used for certificate requests */
  		int cert_req;
  		int ctype_num;
  		char ctype[SSL3_CT_NUMBER];
  		STACK_OF(X509_NAME) *ca_names;
  
  		int use_rsa_tmp;
  
  		int key_block_length;
  		unsigned char *key_block;
  
  		const EVP_CIPHER *new_sym_enc;
  		const EVP_MD *new_hash;
  		int new_mac_pkey_type;
  		int new_mac_secret_size;
  #ifndef OPENSSL_NO_COMP
  		const SSL_COMP *new_compression;
  #else
  		char *new_compression;
  #endif
  		int cert_request;
  		} tmp;
  
          /* Connection binding to prevent renegotiation attacks */
          unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
          unsigned char previous_client_finished_len;
          unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
          unsigned char previous_server_finished_len;
          int send_connection_binding; /* TODOEKR */
  
  #ifndef OPENSSL_NO_NEXTPROTONEG
  	/* Set if we saw the Next Protocol Negotiation extension from our peer. */
  	int next_proto_neg_seen;
  #endif
  	} SSL3_STATE;
  
  #endif
  
  /* SSLv3 */
  /*client */
  /* extra state */
  #define SSL3_ST_CW_FLUSH		(0x100|SSL_ST_CONNECT)
  #ifndef OPENSSL_NO_SCTP
  #define DTLS1_SCTP_ST_CW_WRITE_SOCK			(0x310|SSL_ST_CONNECT)
  #define DTLS1_SCTP_ST_CR_READ_SOCK			(0x320|SSL_ST_CONNECT)
  #endif	
  /* write to server */
  #define SSL3_ST_CW_CLNT_HELLO_A		(0x110|SSL_ST_CONNECT)
  #define SSL3_ST_CW_CLNT_HELLO_B		(0x111|SSL_ST_CONNECT)
  /* read from server */
  #define SSL3_ST_CR_SRVR_HELLO_A		(0x120|SSL_ST_CONNECT)
  #define SSL3_ST_CR_SRVR_HELLO_B		(0x121|SSL_ST_CONNECT)
  #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT)
  #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT)
  #define SSL3_ST_CR_CERT_A		(0x130|SSL_ST_CONNECT)
  #define SSL3_ST_CR_CERT_B		(0x131|SSL_ST_CONNECT)
  #define SSL3_ST_CR_KEY_EXCH_A		(0x140|SSL_ST_CONNECT)
  #define SSL3_ST_CR_KEY_EXCH_B		(0x141|SSL_ST_CONNECT)
  #define SSL3_ST_CR_CERT_REQ_A		(0x150|SSL_ST_CONNECT)
  #define SSL3_ST_CR_CERT_REQ_B		(0x151|SSL_ST_CONNECT)
  #define SSL3_ST_CR_SRVR_DONE_A		(0x160|SSL_ST_CONNECT)
  #define SSL3_ST_CR_SRVR_DONE_B		(0x161|SSL_ST_CONNECT)
  /* write to server */
  #define SSL3_ST_CW_CERT_A		(0x170|SSL_ST_CONNECT)
  #define SSL3_ST_CW_CERT_B		(0x171|SSL_ST_CONNECT)
  #define SSL3_ST_CW_CERT_C		(0x172|SSL_ST_CONNECT)
  #define SSL3_ST_CW_CERT_D		(0x173|SSL_ST_CONNECT)
  #define SSL3_ST_CW_KEY_EXCH_A		(0x180|SSL_ST_CONNECT)
  #define SSL3_ST_CW_KEY_EXCH_B		(0x181|SSL_ST_CONNECT)
  #define SSL3_ST_CW_CERT_VRFY_A		(0x190|SSL_ST_CONNECT)
  #define SSL3_ST_CW_CERT_VRFY_B		(0x191|SSL_ST_CONNECT)
  #define SSL3_ST_CW_CHANGE_A		(0x1A0|SSL_ST_CONNECT)
  #define SSL3_ST_CW_CHANGE_B		(0x1A1|SSL_ST_CONNECT)
  #define SSL3_ST_CW_NEXT_PROTO_A		(0x200|SSL_ST_CONNECT)
  #define SSL3_ST_CW_NEXT_PROTO_B		(0x201|SSL_ST_CONNECT)
  #define SSL3_ST_CW_FINISHED_A		(0x1B0|SSL_ST_CONNECT)
  #define SSL3_ST_CW_FINISHED_B		(0x1B1|SSL_ST_CONNECT)
  /* read from server */
  #define SSL3_ST_CR_CHANGE_A		(0x1C0|SSL_ST_CONNECT)
  #define SSL3_ST_CR_CHANGE_B		(0x1C1|SSL_ST_CONNECT)
  #define SSL3_ST_CR_FINISHED_A		(0x1D0|SSL_ST_CONNECT)
  #define SSL3_ST_CR_FINISHED_B		(0x1D1|SSL_ST_CONNECT)
  #define SSL3_ST_CR_SESSION_TICKET_A	(0x1E0|SSL_ST_CONNECT)
  #define SSL3_ST_CR_SESSION_TICKET_B	(0x1E1|SSL_ST_CONNECT)
  #define SSL3_ST_CR_CERT_STATUS_A	(0x1F0|SSL_ST_CONNECT)
  #define SSL3_ST_CR_CERT_STATUS_B	(0x1F1|SSL_ST_CONNECT)
  
  /* server */
  /* extra state */
  #define SSL3_ST_SW_FLUSH		(0x100|SSL_ST_ACCEPT)
  #ifndef OPENSSL_NO_SCTP
  #define DTLS1_SCTP_ST_SW_WRITE_SOCK			(0x310|SSL_ST_ACCEPT)
  #define DTLS1_SCTP_ST_SR_READ_SOCK			(0x320|SSL_ST_ACCEPT)
  #endif	
  /* read from client */
  /* Do not change the number values, they do matter */
  #define SSL3_ST_SR_CLNT_HELLO_A		(0x110|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_CLNT_HELLO_B		(0x111|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_CLNT_HELLO_C		(0x112|SSL_ST_ACCEPT)
  /* write to client */
  #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT)
  #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_HELLO_REQ_A		(0x120|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_HELLO_REQ_B		(0x121|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_HELLO_REQ_C		(0x122|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_SRVR_HELLO_A		(0x130|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_SRVR_HELLO_B		(0x131|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_CERT_A		(0x140|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_CERT_B		(0x141|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_KEY_EXCH_A		(0x150|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_KEY_EXCH_B		(0x151|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_CERT_REQ_A		(0x160|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_CERT_REQ_B		(0x161|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_SRVR_DONE_A		(0x170|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_SRVR_DONE_B		(0x171|SSL_ST_ACCEPT)
  /* read from client */
  #define SSL3_ST_SR_CERT_A		(0x180|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_CERT_B		(0x181|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_KEY_EXCH_A		(0x190|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_KEY_EXCH_B		(0x191|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_CERT_VRFY_A		(0x1A0|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_CERT_VRFY_B		(0x1A1|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_CHANGE_A		(0x1B0|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_CHANGE_B		(0x1B1|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_NEXT_PROTO_A		(0x210|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_NEXT_PROTO_B		(0x211|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_FINISHED_A		(0x1C0|SSL_ST_ACCEPT)
  #define SSL3_ST_SR_FINISHED_B		(0x1C1|SSL_ST_ACCEPT)
  /* write to client */
  #define SSL3_ST_SW_CHANGE_A		(0x1D0|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_CHANGE_B		(0x1D1|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_FINISHED_A		(0x1E0|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_FINISHED_B		(0x1E1|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_SESSION_TICKET_A	(0x1F0|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_SESSION_TICKET_B	(0x1F1|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_CERT_STATUS_A	(0x200|SSL_ST_ACCEPT)
  #define SSL3_ST_SW_CERT_STATUS_B	(0x201|SSL_ST_ACCEPT)
  
  #define SSL3_MT_HELLO_REQUEST			0
  #define SSL3_MT_CLIENT_HELLO			1
  #define SSL3_MT_SERVER_HELLO			2
  #define	SSL3_MT_NEWSESSION_TICKET		4
  #define SSL3_MT_CERTIFICATE			11
  #define SSL3_MT_SERVER_KEY_EXCHANGE		12
  #define SSL3_MT_CERTIFICATE_REQUEST		13
  #define SSL3_MT_SERVER_DONE			14
  #define SSL3_MT_CERTIFICATE_VERIFY		15
  #define SSL3_MT_CLIENT_KEY_EXCHANGE		16
  #define SSL3_MT_FINISHED			20
  #define SSL3_MT_CERTIFICATE_STATUS		22
  #define SSL3_MT_NEXT_PROTO			67
  #define DTLS1_MT_HELLO_VERIFY_REQUEST    3
  
  
  #define SSL3_MT_CCS				1
  
  /* These are used when changing over to a new cipher */
  #define SSL3_CC_READ		0x01
  #define SSL3_CC_WRITE		0x02
  #define SSL3_CC_CLIENT		0x10
  #define SSL3_CC_SERVER		0x20
  #define SSL3_CHANGE_CIPHER_CLIENT_WRITE	(SSL3_CC_CLIENT|SSL3_CC_WRITE)	
  #define SSL3_CHANGE_CIPHER_SERVER_READ	(SSL3_CC_SERVER|SSL3_CC_READ)
  #define SSL3_CHANGE_CIPHER_CLIENT_READ	(SSL3_CC_CLIENT|SSL3_CC_READ)
  #define SSL3_CHANGE_CIPHER_SERVER_WRITE	(SSL3_CC_SERVER|SSL3_CC_WRITE)
  
  #ifdef  __cplusplus
  }
  #endif
  #endif
  
  