crypto/libressl/include/openssl/ssl3.h

   1 /* $OpenBSD: ssl3.h,v 1.40 2015/07/18 19:41:54 doug Exp $ */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58 /* ====================================================================
  59  * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
  60  *
  61  * Redistribution and use in source and binary forms, with or without
  62  * modification, are permitted provided that the following conditions
  63  * are met:
  64  *
  65  * 1. Redistributions of source code must retain the above copyright
  66  *    notice, this list of conditions and the following disclaimer.
  67  *
  68  * 2. Redistributions in binary form must reproduce the above copyright
  69  *    notice, this list of conditions and the following disclaimer in
  70  *    the documentation and/or other materials provided with the
  71  *    distribution.
  72  *
  73  * 3. All advertising materials mentioning features or use of this
  74  *    software must display the following acknowledgment:
  75  *    "This product includes software developed by the OpenSSL Project
  76  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  77  *
  78  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  79  *    endorse or promote products derived from this software without
  80  *    prior written permission. For written permission, please contact
  81  *    openssl-core@openssl.org.
  82  *
  83  * 5. Products derived from this software may not be called "OpenSSL"
  84  *    nor may "OpenSSL" appear in their names without prior written
  85  *    permission of the OpenSSL Project.
  86  *
  87  * 6. Redistributions of any form whatsoever must retain the following
  88  *    acknowledgment:
  89  *    "This product includes software developed by the OpenSSL Project
  90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  91  *
  92  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  93  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  94  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  95  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  96  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  97  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  98  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  99  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 100  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 101  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 102  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 103  * OF THE POSSIBILITY OF SUCH DAMAGE.
 104  * ====================================================================
 105  *
 106  * This product includes cryptographic software written by Eric Young
 107  * (eay@cryptsoft.com).  This product includes software written by Tim
 108  * Hudson (tjh@cryptsoft.com).
 109  *
 110  */
 111 /* ====================================================================
 112  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 113  * ECC cipher suite support in OpenSSL originally developed by
 114  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 115  */
 116
 117 #ifndef HEADER_SSL3_H
 118 #define HEADER_SSL3_H
 119
 120 #include <openssl/buffer.h>
 121 #include <openssl/evp.h>
 122 #include <openssl/ssl.h>
 123
 124 #ifdef  __cplusplus
 125 extern "C" {
 126 #endif
 127
 128 /* TLS_EMPTY_RENEGOTIATION_INFO_SCSV from RFC 5746. */
 129 #define SSL3_CK_SCSV                            0x030000FF
 130
 131 /* TLS_FALLBACK_SCSV from draft-ietf-tls-downgrade-scsv-03. */
 132 #define SSL3_CK_FALLBACK_SCSV                   0x03005600
 133
 134 #define SSL3_CK_RSA_NULL_MD5                    0x03000001
 135 #define SSL3_CK_RSA_NULL_SHA                    0x03000002
 136 #define SSL3_CK_RSA_RC4_40_MD5                  0x03000003
 137 #define SSL3_CK_RSA_RC4_128_MD5                 0x03000004
 138 #define SSL3_CK_RSA_RC4_128_SHA                 0x03000005
 139 #define SSL3_CK_RSA_RC2_40_MD5                  0x03000006
 140 #define SSL3_CK_RSA_IDEA_128_SHA                0x03000007
 141 #define SSL3_CK_RSA_DES_40_CBC_SHA              0x03000008
 142 #define SSL3_CK_RSA_DES_64_CBC_SHA              0x03000009
 143 #define SSL3_CK_RSA_DES_192_CBC3_SHA            0x0300000A
 144
 145 #define SSL3_CK_DH_DSS_DES_40_CBC_SHA           0x0300000B
 146 #define SSL3_CK_DH_DSS_DES_64_CBC_SHA           0x0300000C
 147 #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA         0x0300000D
 148 #define SSL3_CK_DH_RSA_DES_40_CBC_SHA           0x0300000E
 149 #define SSL3_CK_DH_RSA_DES_64_CBC_SHA           0x0300000F
 150 #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA         0x03000010
 151
 152 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA          0x03000011
 153 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA          0x03000012
 154 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA        0x03000013
 155 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA          0x03000014
 156 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA          0x03000015
 157 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA        0x03000016
 158
 159 #define SSL3_CK_ADH_RC4_40_MD5                  0x03000017
 160 #define SSL3_CK_ADH_RC4_128_MD5                 0x03000018
 161 #define SSL3_CK_ADH_DES_40_CBC_SHA              0x03000019
 162 #define SSL3_CK_ADH_DES_64_CBC_SHA              0x0300001A
 163 #define SSL3_CK_ADH_DES_192_CBC_SHA             0x0300001B
 164
 165 /*    VRS Additional Kerberos5 entries
 166  */
 167 #define SSL3_CK_KRB5_DES_64_CBC_SHA             0x0300001E
 168 #define SSL3_CK_KRB5_DES_192_CBC3_SHA           0x0300001F
 169 #define SSL3_CK_KRB5_RC4_128_SHA                0x03000020
 170 #define SSL3_CK_KRB5_IDEA_128_CBC_SHA           0x03000021
 171 #define SSL3_CK_KRB5_DES_64_CBC_MD5             0x03000022
 172 #define SSL3_CK_KRB5_DES_192_CBC3_MD5           0x03000023
 173 #define SSL3_CK_KRB5_RC4_128_MD5                0x03000024
 174 #define SSL3_CK_KRB5_IDEA_128_CBC_MD5           0x03000025
 175
 176 #define SSL3_CK_KRB5_DES_40_CBC_SHA             0x03000026
 177 #define SSL3_CK_KRB5_RC2_40_CBC_SHA             0x03000027
 178 #define SSL3_CK_KRB5_RC4_40_SHA                 0x03000028
 179 #define SSL3_CK_KRB5_DES_40_CBC_MD5             0x03000029
 180 #define SSL3_CK_KRB5_RC2_40_CBC_MD5             0x0300002A
 181 #define SSL3_CK_KRB5_RC4_40_MD5                 0x0300002B
 182
 183 #define SSL3_TXT_RSA_NULL_MD5                   "NULL-MD5"
 184 #define SSL3_TXT_RSA_NULL_SHA                   "NULL-SHA"
 185 #define SSL3_TXT_RSA_RC4_40_MD5                 "EXP-RC4-MD5"
 186 #define SSL3_TXT_RSA_RC4_128_MD5                "RC4-MD5"
 187 #define SSL3_TXT_RSA_RC4_128_SHA                "RC4-SHA"
 188 #define SSL3_TXT_RSA_RC2_40_MD5                 "EXP-RC2-CBC-MD5"
 189 #define SSL3_TXT_RSA_IDEA_128_SHA               "IDEA-CBC-SHA"
 190 #define SSL3_TXT_RSA_DES_40_CBC_SHA             "EXP-DES-CBC-SHA"
 191 #define SSL3_TXT_RSA_DES_64_CBC_SHA             "DES-CBC-SHA"
 192 #define SSL3_TXT_RSA_DES_192_CBC3_SHA           "DES-CBC3-SHA"
 193
 194 #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA          "EXP-DH-DSS-DES-CBC-SHA"
 195 #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA          "DH-DSS-DES-CBC-SHA"
 196 #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA        "DH-DSS-DES-CBC3-SHA"
 197 #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA          "EXP-DH-RSA-DES-CBC-SHA"
 198 #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA          "DH-RSA-DES-CBC-SHA"
 199 #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA        "DH-RSA-DES-CBC3-SHA"
 200
 201 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA         "EXP-EDH-DSS-DES-CBC-SHA"
 202 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA         "EDH-DSS-DES-CBC-SHA"
 203 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA       "EDH-DSS-DES-CBC3-SHA"
 204 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA         "EXP-EDH-RSA-DES-CBC-SHA"
 205 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA         "EDH-RSA-DES-CBC-SHA"
 206 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA       "EDH-RSA-DES-CBC3-SHA"
 207
 208 #define SSL3_TXT_ADH_RC4_40_MD5                 "EXP-ADH-RC4-MD5"
 209 #define SSL3_TXT_ADH_RC4_128_MD5                "ADH-RC4-MD5"
 210 #define SSL3_TXT_ADH_DES_40_CBC_SHA             "EXP-ADH-DES-CBC-SHA"
 211 #define SSL3_TXT_ADH_DES_64_CBC_SHA             "ADH-DES-CBC-SHA"
 212 #define SSL3_TXT_ADH_DES_192_CBC_SHA            "ADH-DES-CBC3-SHA"
 213
 214 #define SSL3_TXT_KRB5_DES_64_CBC_SHA            "KRB5-DES-CBC-SHA"
 215 #define SSL3_TXT_KRB5_DES_192_CBC3_SHA          "KRB5-DES-CBC3-SHA"
 216 #define SSL3_TXT_KRB5_RC4_128_SHA               "KRB5-RC4-SHA"
 217 #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA          "KRB5-IDEA-CBC-SHA"
 218 #define SSL3_TXT_KRB5_DES_64_CBC_MD5            "KRB5-DES-CBC-MD5"
 219 #define SSL3_TXT_KRB5_DES_192_CBC3_MD5          "KRB5-DES-CBC3-MD5"
 220 #define SSL3_TXT_KRB5_RC4_128_MD5               "KRB5-RC4-MD5"
 221 #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5          "KRB5-IDEA-CBC-MD5"
 222
 223 #define SSL3_TXT_KRB5_DES_40_CBC_SHA            "EXP-KRB5-DES-CBC-SHA"
 224 #define SSL3_TXT_KRB5_RC2_40_CBC_SHA            "EXP-KRB5-RC2-CBC-SHA"
 225 #define SSL3_TXT_KRB5_RC4_40_SHA                "EXP-KRB5-RC4-SHA"
 226 #define SSL3_TXT_KRB5_DES_40_CBC_MD5            "EXP-KRB5-DES-CBC-MD5"
 227 #define SSL3_TXT_KRB5_RC2_40_CBC_MD5            "EXP-KRB5-RC2-CBC-MD5"
 228 #define SSL3_TXT_KRB5_RC4_40_MD5                "EXP-KRB5-RC4-MD5"
 229
 230 #define SSL3_SSL_SESSION_ID_LENGTH              32
 231 #define SSL3_MAX_SSL_SESSION_ID_LENGTH          32
 232
 233 #define SSL3_MASTER_SECRET_SIZE                 48
 234 #define SSL3_RANDOM_SIZE                        32
 235 #define SSL3_SEQUENCE_SIZE                      8
 236 #define SSL3_SESSION_ID_SIZE                    32
 237 #define SSL3_CIPHER_VALUE_SIZE                  2
 238
 239 #define SSL3_RT_HEADER_LENGTH                   5
 240 #define SSL3_HM_HEADER_LENGTH                   4
 241
 242 #define SSL3_ALIGN_PAYLOAD                      8
 243
 244 /* This is the maximum MAC (digest) size used by the SSL library.
 245  * Currently maximum of 20 is used by SHA1, but we reserve for
 246  * future extension for 512-bit hashes.
 247  */
 248
 249 #define SSL3_RT_MAX_MD_SIZE                     64
 250
 251 /* Maximum block size used in all ciphersuites. Currently 16 for AES.
 252  */
 253
 254 #define SSL_RT_MAX_CIPHER_BLOCK_SIZE            16
 255
 256 #define SSL3_RT_MAX_EXTRA                       (16384)
 257
 258 /* Maximum plaintext length: defined by SSL/TLS standards */
 259 #define SSL3_RT_MAX_PLAIN_LENGTH                16384
 260 /* Maximum compression overhead: defined by SSL/TLS standards */
 261 #define SSL3_RT_MAX_COMPRESSED_OVERHEAD         1024
 262
 263 /* The standards give a maximum encryption overhead of 1024 bytes.
 264  * In practice the value is lower than this. The overhead is the maximum
 265  * number of padding bytes (256) plus the mac size.
 266  */
 267 #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD  (256 + SSL3_RT_MAX_MD_SIZE)
 268
 269 /* OpenSSL currently only uses a padding length of at most one block so
 270  * the send overhead is smaller.
 271  */
 272
 273 #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
 274                         (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE)
 275
 276 /* If compression isn't used don't include the compression overhead */
 277 #define SSL3_RT_MAX_COMPRESSED_LENGTH           SSL3_RT_MAX_PLAIN_LENGTH
 278 #define SSL3_RT_MAX_ENCRYPTED_LENGTH    \
 279                 (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH)
 280 #define SSL3_RT_MAX_PACKET_SIZE         \
 281                 (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
 282
 283 #define SSL3_MD_CLIENT_FINISHED_CONST   "\x43\x4C\x4E\x54"
 284 #define SSL3_MD_SERVER_FINISHED_CONST   "\x53\x52\x56\x52"
 285
 286 #define SSL3_VERSION                    0x0300
 287 #define SSL3_VERSION_MAJOR              0x03
 288 #define SSL3_VERSION_MINOR              0x00
 289
 290 #define SSL3_RT_CHANGE_CIPHER_SPEC      20
 291 #define SSL3_RT_ALERT                   21
 292 #define SSL3_RT_HANDSHAKE               22
 293 #define SSL3_RT_APPLICATION_DATA        23
 294 #define TLS1_RT_HEARTBEAT               24
 295
 296 #define SSL3_AL_WARNING                 1
 297 #define SSL3_AL_FATAL                   2
 298
 299 #define SSL3_AD_CLOSE_NOTIFY             0
 300 #define SSL3_AD_UNEXPECTED_MESSAGE      10      /* fatal */
 301 #define SSL3_AD_BAD_RECORD_MAC          20      /* fatal */
 302 #define SSL3_AD_DECOMPRESSION_FAILURE   30      /* fatal */
 303 #define SSL3_AD_HANDSHAKE_FAILURE       40      /* fatal */
 304 #define SSL3_AD_NO_CERTIFICATE          41
 305 #define SSL3_AD_BAD_CERTIFICATE         42
 306 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
 307 #define SSL3_AD_CERTIFICATE_REVOKED     44
 308 #define SSL3_AD_CERTIFICATE_EXPIRED     45
 309 #define SSL3_AD_CERTIFICATE_UNKNOWN     46
 310 #define SSL3_AD_ILLEGAL_PARAMETER       47      /* fatal */
 311
 312 #define TLS1_HB_REQUEST         1
 313 #define TLS1_HB_RESPONSE        2
 314
 315 #ifndef OPENSSL_NO_SSL_INTERN
 316
 317 typedef struct ssl3_record_st {
 318 /*r */  int type;               /* type of record */
 319 /*rw*/  unsigned int length;    /* How many bytes available */
 320 /*r */  unsigned int off;       /* read/write offset into 'buf' */
 321 /*rw*/  unsigned char *data;    /* pointer to the record data */
 322 /*rw*/  unsigned char *input;   /* where the decode bytes are */
 323 /*r */  unsigned long epoch;    /* epoch number, needed by DTLS1 */
 324 /*r */  unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */
 325 } SSL3_RECORD;
 326
 327 typedef struct ssl3_buffer_st {
 328         unsigned char *buf;     /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
 329                                  * see ssl3_setup_buffers() */
 330         size_t len;             /* buffer size */
 331         int offset;             /* where to 'copy from' */
 332         int left;               /* how many bytes left */
 333 } SSL3_BUFFER;
 334
 335 #endif
 336
 337 #define SSL3_CT_RSA_SIGN                        1
 338 #define SSL3_CT_DSS_SIGN                        2
 339 #define SSL3_CT_RSA_FIXED_DH                    3
 340 #define SSL3_CT_DSS_FIXED_DH                    4
 341 #define SSL3_CT_RSA_EPHEMERAL_DH                5
 342 #define SSL3_CT_DSS_EPHEMERAL_DH                6
 343 #define SSL3_CT_FORTEZZA_DMS                    20
 344 /* SSL3_CT_NUMBER is used to size arrays and it must be large
 345  * enough to contain all of the cert types defined either for
 346  * SSLv3 and TLSv1.
 347  */
 348 #define SSL3_CT_NUMBER                  11
 349
 350
 351 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS       0x0001
 352 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED        0x0002
 353 #define SSL3_FLAGS_POP_BUFFER                   0x0004
 354 #define TLS1_FLAGS_TLS_PADDING_BUG              0x0
 355 #define TLS1_FLAGS_SKIP_CERT_VERIFY             0x0010
 356 #define TLS1_FLAGS_KEEP_HANDSHAKE               0x0020
 357 #define SSL3_FLAGS_CCS_OK                       0x0080
 358
 359 #ifndef OPENSSL_NO_SSL_INTERN
 360
 361 typedef struct ssl3_state_st {
 362         long flags;
 363         int delay_buf_pop_ret;
 364
 365         unsigned char read_sequence[SSL3_SEQUENCE_SIZE];
 366         int read_mac_secret_size;
 367         unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
 368         unsigned char write_sequence[SSL3_SEQUENCE_SIZE];
 369         int write_mac_secret_size;
 370         unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
 371
 372         unsigned char server_random[SSL3_RANDOM_SIZE];
 373         unsigned char client_random[SSL3_RANDOM_SIZE];
 374
 375         /* flags for countermeasure against known-IV weakness */
 376         int need_empty_fragments;
 377         int empty_fragment_done;
 378
 379         SSL3_BUFFER rbuf;       /* read IO goes into here */
 380         SSL3_BUFFER wbuf;       /* write IO goes into here */
 381
 382         SSL3_RECORD rrec;       /* each decoded record goes in here */
 383         SSL3_RECORD wrec;       /* goes out from here */
 384
 385         /* storage for Alert/Handshake protocol data received but not
 386          * yet processed by ssl3_read_bytes: */
 387         unsigned char alert_fragment[2];
 388         unsigned int alert_fragment_len;
 389         unsigned char handshake_fragment[4];
 390         unsigned int handshake_fragment_len;
 391
 392         /* partial write - check the numbers match */
 393         unsigned int wnum;      /* number of bytes sent so far */
 394         int wpend_tot;          /* number bytes written */
 395         int wpend_type;
 396         int wpend_ret;          /* number of bytes submitted */
 397         const unsigned char *wpend_buf;
 398
 399         /* used during startup, digest all incoming/outgoing packets */
 400         BIO *handshake_buffer;
 401         /* When set of handshake digests is determined, buffer is hashed
 402          * and freed and MD_CTX-es for all required digests are stored in
 403          * this array */
 404         EVP_MD_CTX **handshake_dgst;
 405         /* this is set whenerver we see a change_cipher_spec message
 406          * come in when we are not looking for one */
 407         int change_cipher_spec;
 408
 409         int warn_alert;
 410         int fatal_alert;
 411         /* we allow one fatal and one warning alert to be outstanding,
 412          * send close alert via the warning alert */
 413         int alert_dispatch;
 414         unsigned char send_alert[2];
 415
 416         /* This flag is set when we should renegotiate ASAP, basically when
 417          * there is no more data in the read or write buffers */
 418         int renegotiate;
 419         int total_renegotiations;
 420         int num_renegotiations;
 421
 422         int in_read_app_data;
 423
 424         struct  {
 425                 /* actually only needs to be 16+20 */
 426                 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
 427
 428                 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
 429                 unsigned char finish_md[EVP_MAX_MD_SIZE*2];
 430                 int finish_md_len;
 431                 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
 432                 int peer_finish_md_len;
 433
 434                 unsigned long message_size;
 435                 int message_type;
 436
 437                 /* used to hold the new cipher we are going to use */
 438                 const SSL_CIPHER *new_cipher;
 439                 DH *dh;
 440
 441                 EC_KEY *ecdh; /* holds short lived ECDH key */
 442
 443                 /* used when SSL_ST_FLUSH_DATA is entered */
 444                 int next_state;
 445
 446                 int reuse_message;
 447
 448                 /* used for certificate requests */
 449                 int cert_req;
 450                 int ctype_num;
 451                 char ctype[SSL3_CT_NUMBER];
 452                 STACK_OF(X509_NAME) *ca_names;
 453
 454                 int key_block_length;
 455                 unsigned char *key_block;
 456
 457                 const EVP_CIPHER *new_sym_enc;
 458                 const EVP_AEAD *new_aead;
 459                 const EVP_MD *new_hash;
 460                 int new_mac_pkey_type;
 461                 int new_mac_secret_size;
 462                 int cert_request;
 463         } tmp;
 464
 465         /* Connection binding to prevent renegotiation attacks */
 466         unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
 467         unsigned char previous_client_finished_len;
 468         unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
 469         unsigned char previous_server_finished_len;
 470         int send_connection_binding; /* TODOEKR */
 471
 472         /* Set if we saw the Next Protocol Negotiation extension from our peer.
 473          */
 474         int next_proto_neg_seen;
 475
 476         /*
 477          * ALPN information
 478          * (we are in the process of transitioning from NPN to ALPN).
 479          */
 480
 481         /*
 482          * In a server these point to the selected ALPN protocol after the
 483          * ClientHello has been processed. In a client these contain the
 484          * protocol that the server selected once the ServerHello has been
 485          * processed.
 486          */
 487         unsigned char *alpn_selected;
 488         unsigned int alpn_selected_len;
 489 } SSL3_STATE;
 490
 491 #endif
 492
 493 /* SSLv3 */
 494 /*client */
 495 /* extra state */
 496 #define SSL3_ST_CW_FLUSH                        (0x100|SSL_ST_CONNECT)
 497 /* write to server */
 498 #define SSL3_ST_CW_CLNT_HELLO_A                 (0x110|SSL_ST_CONNECT)
 499 #define SSL3_ST_CW_CLNT_HELLO_B                 (0x111|SSL_ST_CONNECT)
 500 /* read from server */
 501 #define SSL3_ST_CR_SRVR_HELLO_A                 (0x120|SSL_ST_CONNECT)
 502 #define SSL3_ST_CR_SRVR_HELLO_B                 (0x121|SSL_ST_CONNECT)
 503 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A      (0x126|SSL_ST_CONNECT)
 504 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B      (0x127|SSL_ST_CONNECT)
 505 #define SSL3_ST_CR_CERT_A                       (0x130|SSL_ST_CONNECT)
 506 #define SSL3_ST_CR_CERT_B                       (0x131|SSL_ST_CONNECT)
 507 #define SSL3_ST_CR_KEY_EXCH_A                   (0x140|SSL_ST_CONNECT)
 508 #define SSL3_ST_CR_KEY_EXCH_B                   (0x141|SSL_ST_CONNECT)
 509 #define SSL3_ST_CR_CERT_REQ_A                   (0x150|SSL_ST_CONNECT)
 510 #define SSL3_ST_CR_CERT_REQ_B                   (0x151|SSL_ST_CONNECT)
 511 #define SSL3_ST_CR_SRVR_DONE_A                  (0x160|SSL_ST_CONNECT)
 512 #define SSL3_ST_CR_SRVR_DONE_B                  (0x161|SSL_ST_CONNECT)
 513 /* write to server */
 514 #define SSL3_ST_CW_CERT_A                       (0x170|SSL_ST_CONNECT)
 515 #define SSL3_ST_CW_CERT_B                       (0x171|SSL_ST_CONNECT)
 516 #define SSL3_ST_CW_CERT_C                       (0x172|SSL_ST_CONNECT)
 517 #define SSL3_ST_CW_CERT_D                       (0x173|SSL_ST_CONNECT)
 518 #define SSL3_ST_CW_KEY_EXCH_A                   (0x180|SSL_ST_CONNECT)
 519 #define SSL3_ST_CW_KEY_EXCH_B                   (0x181|SSL_ST_CONNECT)
 520 #define SSL3_ST_CW_CERT_VRFY_A                  (0x190|SSL_ST_CONNECT)
 521 #define SSL3_ST_CW_CERT_VRFY_B                  (0x191|SSL_ST_CONNECT)
 522 #define SSL3_ST_CW_CHANGE_A                     (0x1A0|SSL_ST_CONNECT)
 523 #define SSL3_ST_CW_CHANGE_B                     (0x1A1|SSL_ST_CONNECT)
 524 #define SSL3_ST_CW_NEXT_PROTO_A                 (0x200|SSL_ST_CONNECT)
 525 #define SSL3_ST_CW_NEXT_PROTO_B                 (0x201|SSL_ST_CONNECT)
 526 #define SSL3_ST_CW_FINISHED_A                   (0x1B0|SSL_ST_CONNECT)
 527 #define SSL3_ST_CW_FINISHED_B                   (0x1B1|SSL_ST_CONNECT)
 528 /* read from server */
 529 #define SSL3_ST_CR_CHANGE_A                     (0x1C0|SSL_ST_CONNECT)
 530 #define SSL3_ST_CR_CHANGE_B                     (0x1C1|SSL_ST_CONNECT)
 531 #define SSL3_ST_CR_FINISHED_A                   (0x1D0|SSL_ST_CONNECT)
 532 #define SSL3_ST_CR_FINISHED_B                   (0x1D1|SSL_ST_CONNECT)
 533 #define SSL3_ST_CR_SESSION_TICKET_A             (0x1E0|SSL_ST_CONNECT)
 534 #define SSL3_ST_CR_SESSION_TICKET_B             (0x1E1|SSL_ST_CONNECT)
 535 #define SSL3_ST_CR_CERT_STATUS_A                (0x1F0|SSL_ST_CONNECT)
 536 #define SSL3_ST_CR_CERT_STATUS_B                (0x1F1|SSL_ST_CONNECT)
 537
 538 /* server */
 539 /* extra state */
 540 #define SSL3_ST_SW_FLUSH                        (0x100|SSL_ST_ACCEPT)
 541 /* read from client */
 542 /* Do not change the number values, they do matter */
 543 #define SSL3_ST_SR_CLNT_HELLO_A                 (0x110|SSL_ST_ACCEPT)
 544 #define SSL3_ST_SR_CLNT_HELLO_B                 (0x111|SSL_ST_ACCEPT)
 545 #define SSL3_ST_SR_CLNT_HELLO_C                 (0x112|SSL_ST_ACCEPT)
 546 /* write to client */
 547 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A      (0x113|SSL_ST_ACCEPT)
 548 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B      (0x114|SSL_ST_ACCEPT)
 549 #define SSL3_ST_SW_HELLO_REQ_A                  (0x120|SSL_ST_ACCEPT)
 550 #define SSL3_ST_SW_HELLO_REQ_B                  (0x121|SSL_ST_ACCEPT)
 551 #define SSL3_ST_SW_HELLO_REQ_C                  (0x122|SSL_ST_ACCEPT)
 552 #define SSL3_ST_SW_SRVR_HELLO_A                 (0x130|SSL_ST_ACCEPT)
 553 #define SSL3_ST_SW_SRVR_HELLO_B                 (0x131|SSL_ST_ACCEPT)
 554 #define SSL3_ST_SW_CERT_A                       (0x140|SSL_ST_ACCEPT)
 555 #define SSL3_ST_SW_CERT_B                       (0x141|SSL_ST_ACCEPT)
 556 #define SSL3_ST_SW_KEY_EXCH_A                   (0x150|SSL_ST_ACCEPT)
 557 #define SSL3_ST_SW_KEY_EXCH_B                   (0x151|SSL_ST_ACCEPT)
 558 #define SSL3_ST_SW_CERT_REQ_A                   (0x160|SSL_ST_ACCEPT)
 559 #define SSL3_ST_SW_CERT_REQ_B                   (0x161|SSL_ST_ACCEPT)
 560 #define SSL3_ST_SW_SRVR_DONE_A                  (0x170|SSL_ST_ACCEPT)
 561 #define SSL3_ST_SW_SRVR_DONE_B                  (0x171|SSL_ST_ACCEPT)
 562 /* read from client */
 563 #define SSL3_ST_SR_CERT_A                       (0x180|SSL_ST_ACCEPT)
 564 #define SSL3_ST_SR_CERT_B                       (0x181|SSL_ST_ACCEPT)
 565 #define SSL3_ST_SR_KEY_EXCH_A                   (0x190|SSL_ST_ACCEPT)
 566 #define SSL3_ST_SR_KEY_EXCH_B                   (0x191|SSL_ST_ACCEPT)
 567 #define SSL3_ST_SR_CERT_VRFY_A                  (0x1A0|SSL_ST_ACCEPT)
 568 #define SSL3_ST_SR_CERT_VRFY_B                  (0x1A1|SSL_ST_ACCEPT)
 569 #define SSL3_ST_SR_CHANGE_A                     (0x1B0|SSL_ST_ACCEPT)
 570 #define SSL3_ST_SR_CHANGE_B                     (0x1B1|SSL_ST_ACCEPT)
 571 #define SSL3_ST_SR_NEXT_PROTO_A                 (0x210|SSL_ST_ACCEPT)
 572 #define SSL3_ST_SR_NEXT_PROTO_B                 (0x211|SSL_ST_ACCEPT)
 573 #define SSL3_ST_SR_FINISHED_A                   (0x1C0|SSL_ST_ACCEPT)
 574 #define SSL3_ST_SR_FINISHED_B                   (0x1C1|SSL_ST_ACCEPT)
 575 /* write to client */
 576 #define SSL3_ST_SW_CHANGE_A                     (0x1D0|SSL_ST_ACCEPT)
 577 #define SSL3_ST_SW_CHANGE_B                     (0x1D1|SSL_ST_ACCEPT)
 578 #define SSL3_ST_SW_FINISHED_A                   (0x1E0|SSL_ST_ACCEPT)
 579 #define SSL3_ST_SW_FINISHED_B                   (0x1E1|SSL_ST_ACCEPT)
 580 #define SSL3_ST_SW_SESSION_TICKET_A             (0x1F0|SSL_ST_ACCEPT)
 581 #define SSL3_ST_SW_SESSION_TICKET_B             (0x1F1|SSL_ST_ACCEPT)
 582 #define SSL3_ST_SW_CERT_STATUS_A                (0x200|SSL_ST_ACCEPT)
 583 #define SSL3_ST_SW_CERT_STATUS_B                (0x201|SSL_ST_ACCEPT)
 584
 585 #define SSL3_MT_HELLO_REQUEST                   0
 586 #define SSL3_MT_CLIENT_HELLO                    1
 587 #define SSL3_MT_SERVER_HELLO                    2
 588 #define SSL3_MT_NEWSESSION_TICKET               4
 589 #define SSL3_MT_CERTIFICATE                     11
 590 #define SSL3_MT_SERVER_KEY_EXCHANGE             12
 591 #define SSL3_MT_CERTIFICATE_REQUEST             13
 592 #define SSL3_MT_SERVER_DONE                     14
 593 #define SSL3_MT_CERTIFICATE_VERIFY              15
 594 #define SSL3_MT_CLIENT_KEY_EXCHANGE             16
 595 #define SSL3_MT_FINISHED                        20
 596 #define SSL3_MT_CERTIFICATE_STATUS              22
 597
 598 #define SSL3_MT_NEXT_PROTO                      67
 599
 600 #define DTLS1_MT_HELLO_VERIFY_REQUEST           3
 601
 602 #define SSL3_MT_CCS                             1
 603
 604 /* These are used when changing over to a new cipher */
 605 #define SSL3_CC_READ            0x01
 606 #define SSL3_CC_WRITE           0x02
 607 #define SSL3_CC_CLIENT          0x10
 608 #define SSL3_CC_SERVER          0x20
 609 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE         (SSL3_CC_CLIENT|SSL3_CC_WRITE)
 610 #define SSL3_CHANGE_CIPHER_SERVER_READ          (SSL3_CC_SERVER|SSL3_CC_READ)
 611 #define SSL3_CHANGE_CIPHER_CLIENT_READ          (SSL3_CC_CLIENT|SSL3_CC_READ)
 612 #define SSL3_CHANGE_CIPHER_SERVER_WRITE         (SSL3_CC_SERVER|SSL3_CC_WRITE)
 613
 614 #ifdef  __cplusplus
 615 }
 616 #endif
 617 #endif