Upgrade chrome's OpenSSL to same version Android ships with.

openssl/ssl/ssl3.h.orig

+/* 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)
+
+/* Default buffer length used for writen records.  Thus a generated record
+ * will contain plaintext no larger than this value. */
+#define SSL3_RT_DEFAULT_PLAIN_LENGTH    2048
+/* 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)
+
+/* Extra space for empty fragment, headers, MAC, and padding. */
+#define SSL3_RT_DEFAULT_WRITE_OVERHEAD  256
+#define SSL3_RT_DEFAULT_PACKET_SIZE     4096 - SSL3_RT_DEFAULT_WRITE_OVERHEAD
+#if SSL3_RT_DEFAULT_PLAIN_LENGTH + SSL3_RT_DEFAULT_WRITE_OVERHEAD > SSL3_RT_DEFAULT_PACKET_SIZE
+#error "Insufficient space allocated for write buffers."
+#endif
+
+#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 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 */
+
+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;
+
+#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
+ 
+/* 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
+
+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 */
+        } SSL3_STATE;
+
+
+/* SSLv3 */
+/*client */
+/* extra state */
+#define SSL3_ST_CW_FLUSH                (0x100|SSL_ST_CONNECT)
+#define SSL3_ST_CUTTHROUGH_COMPLETE     (0x101|SSL_ST_CONNECT)
+/* 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_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)
+/* 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_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 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