LCOM1920-T02G10

/* 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 RFC 5746

 * (TLS_EMPTY_RENEGOTIATION_INFO_SCSV)

 */

# define SSL3_CK_SCSV                            0x030000FF

/*

 * Signalling cipher suite value from draft-ietf-tls-downgrade-scsv-00

 * (TLS_FALLBACK_SCSV)

 */

# define SSL3_CK_FALLBACK_SCSV                   0x03005600

# 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 {

    /* type of record */

    /*

     * r

     */ int type;

    /* How many bytes available */

    /*

     * rw

     */ unsigned int length;

    /* read/write offset into 'buf' */

    /*

     * r

     */ unsigned int off;

    /* pointer to the record data */

    /*

     * rw

     */ unsigned char *data;

    /* where the decode bytes are */

    /*

     * rw

     */ unsigned char *input;

    /* only used with decompression - malloc()ed */

    /*

     * r

     */ unsigned char *comp;

    /* epoch number, needed by DTLS1 */

    /*

     * r

     */ unsigned long epoch;

    /* sequence number, needed by DTLS1 */

    /*

     * r

     */ unsigned char seq_num[8];

} SSL3_RECORD;

typedef struct ssl3_buffer_st {

    /* at least SSL3_RT_MAX_PACKET_SIZE bytes, see ssl3_setup_buffers() */

    unsigned char *buf;

    /* buffer size */

    size_t len;

    /* where to 'copy from' */

    int offset;

    /* how many bytes left */

    int 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

/*

 * Set when the handshake is ready to process peer's ChangeCipherSpec message.

 * Cleared after the message has been processed.

 */

# define SSL3_FLAGS_CCS_OK                       0x0080

/*

 * 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;

    /*

     * Set whenever an expected ChangeCipherSpec message is processed.

     * Unset when the peer's Finished message is received.

     * Unexpected ChangeCipherSpec messages trigger a fatal alert.

     */

    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

#  ifndef OPENSSL_NO_TLSEXT

#   ifndef OPENSSL_NO_EC

    /*

     * This is set to true if we believe that this is a version of Safari

     * running on OS X 10.6 or newer. We wish to know this because Safari on

     * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.

     */

    char is_probably_safari;

#   endif                       /* !OPENSSL_NO_EC */

#  endif                        /* !OPENSSL_NO_TLSEXT */

} 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)

# ifndef OPENSSL_NO_NEXTPROTONEG

#  define SSL3_ST_CW_NEXT_PROTO_A         (0x200|SSL_ST_CONNECT)

#  define SSL3_ST_CW_NEXT_PROTO_B         (0x201|SSL_ST_CONNECT)

# endif

# 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)

# ifndef OPENSSL_NO_NEXTPROTONEG

#  define SSL3_ST_SR_NEXT_PROTO_A         (0x210|SSL_ST_ACCEPT)

#  define SSL3_ST_SR_NEXT_PROTO_B         (0x211|SSL_ST_ACCEPT)

# endif

# 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

# ifndef OPENSSL_NO_NEXTPROTONEG

#  define SSL3_MT_NEXT_PROTO                      67

# endif

# 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