ssl/ssl3.h

   1 /* ssl/ssl3.h */
   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 #ifndef OPENSSL_NO_COMP
 121 #include <openssl/comp.h>
 122 #endif
 123 #include <openssl/buffer.h>
 124 #include <openssl/evp.h>
 125 #include <openssl/ssl.h>
 126 #include <openssl/pq_compat.h>
 127
 128 #ifdef  __cplusplus
 129 extern "C" {
 130 #endif
 131
 132 /* Signalling cipher suite value from RFC 5746
 133  * (TLS_EMPTY_RENEGOTIATION_INFO_SCSV) */
 134 #define SSL3_CK_SCSV                            0x030000FF
 135
 136 /* Signalling cipher suite value from draft-ietf-tls-downgrade-scsv-00
 137  * (TLS_FALLBACK_SCSV) */
 138 #define SSL3_CK_FALLBACK_SCSV                   0x03005600
 139
 140 #define SSL3_CK_RSA_NULL_MD5                    0x03000001
 141 #define SSL3_CK_RSA_NULL_SHA                    0x03000002
 142 #define SSL3_CK_RSA_RC4_40_MD5                  0x03000003
 143 #define SSL3_CK_RSA_RC4_128_MD5                 0x03000004
 144 #define SSL3_CK_RSA_RC4_128_SHA                 0x03000005
 145 #define SSL3_CK_RSA_RC2_40_MD5                  0x03000006
 146 #define SSL3_CK_RSA_IDEA_128_SHA                0x03000007
 147 #define SSL3_CK_RSA_DES_40_CBC_SHA              0x03000008
 148 #define SSL3_CK_RSA_DES_64_CBC_SHA              0x03000009
 149 #define SSL3_CK_RSA_DES_192_CBC3_SHA            0x0300000A
 150
 151 #define SSL3_CK_DH_DSS_DES_40_CBC_SHA           0x0300000B
 152 #define SSL3_CK_DH_DSS_DES_64_CBC_SHA           0x0300000C
 153 #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA         0x0300000D
 154 #define SSL3_CK_DH_RSA_DES_40_CBC_SHA           0x0300000E
 155 #define SSL3_CK_DH_RSA_DES_64_CBC_SHA           0x0300000F
 156 #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA         0x03000010
 157
 158 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA          0x03000011
 159 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA          0x03000012
 160 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA        0x03000013
 161 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA          0x03000014
 162 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA          0x03000015
 163 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA        0x03000016
 164
 165 #define SSL3_CK_ADH_RC4_40_MD5                  0x03000017
 166 #define SSL3_CK_ADH_RC4_128_MD5                 0x03000018
 167 #define SSL3_CK_ADH_DES_40_CBC_SHA              0x03000019
 168 #define SSL3_CK_ADH_DES_64_CBC_SHA              0x0300001A
 169 #define SSL3_CK_ADH_DES_192_CBC_SHA             0x0300001B
 170
 171 #define SSL3_CK_FZA_DMS_NULL_SHA                0x0300001C
 172 #define SSL3_CK_FZA_DMS_FZA_SHA                 0x0300001D
 173 #if 0 /* Because it clashes with KRB5, is never used any more, and is safe
 174          to remove according to David Hopwood <david.hopwood@zetnet.co.uk>
 175          of the ietf-tls list */
 176 #define SSL3_CK_FZA_DMS_RC4_SHA                 0x0300001E
 177 #endif
 178
 179 /*    VRS Additional Kerberos5 entries
 180  */
 181 #define SSL3_CK_KRB5_DES_64_CBC_SHA             0x0300001E
 182 #define SSL3_CK_KRB5_DES_192_CBC3_SHA           0x0300001F
 183 #define SSL3_CK_KRB5_RC4_128_SHA                0x03000020
 184 #define SSL3_CK_KRB5_IDEA_128_CBC_SHA           0x03000021
 185 #define SSL3_CK_KRB5_DES_64_CBC_MD5             0x03000022
 186 #define SSL3_CK_KRB5_DES_192_CBC3_MD5           0x03000023
 187 #define SSL3_CK_KRB5_RC4_128_MD5                0x03000024
 188 #define SSL3_CK_KRB5_IDEA_128_CBC_MD5           0x03000025
 189
 190 #define SSL3_CK_KRB5_DES_40_CBC_SHA             0x03000026
 191 #define SSL3_CK_KRB5_RC2_40_CBC_SHA             0x03000027
 192 #define SSL3_CK_KRB5_RC4_40_SHA                 0x03000028
 193 #define SSL3_CK_KRB5_DES_40_CBC_MD5             0x03000029
 194 #define SSL3_CK_KRB5_RC2_40_CBC_MD5             0x0300002A
 195 #define SSL3_CK_KRB5_RC4_40_MD5                 0x0300002B
 196
 197 #define SSL3_TXT_RSA_NULL_MD5                   "NULL-MD5"
 198 #define SSL3_TXT_RSA_NULL_SHA                   "NULL-SHA"
 199 #define SSL3_TXT_RSA_RC4_40_MD5                 "EXP-RC4-MD5"
 200 #define SSL3_TXT_RSA_RC4_128_MD5                "RC4-MD5"
 201 #define SSL3_TXT_RSA_RC4_128_SHA                "RC4-SHA"
 202 #define SSL3_TXT_RSA_RC2_40_MD5                 "EXP-RC2-CBC-MD5"
 203 #define SSL3_TXT_RSA_IDEA_128_SHA               "IDEA-CBC-SHA"
 204 #define SSL3_TXT_RSA_DES_40_CBC_SHA             "EXP-DES-CBC-SHA"
 205 #define SSL3_TXT_RSA_DES_64_CBC_SHA             "DES-CBC-SHA"
 206 #define SSL3_TXT_RSA_DES_192_CBC3_SHA           "DES-CBC3-SHA"
 207
 208 #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA          "EXP-DH-DSS-DES-CBC-SHA"
 209 #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA          "DH-DSS-DES-CBC-SHA"
 210 #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA        "DH-DSS-DES-CBC3-SHA"
 211 #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA          "EXP-DH-RSA-DES-CBC-SHA"
 212 #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA          "DH-RSA-DES-CBC-SHA"
 213 #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA        "DH-RSA-DES-CBC3-SHA"
 214
 215 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA         "EXP-EDH-DSS-DES-CBC-SHA"
 216 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA         "EDH-DSS-DES-CBC-SHA"
 217 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA       "EDH-DSS-DES-CBC3-SHA"
 218 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA         "EXP-EDH-RSA-DES-CBC-SHA"
 219 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA         "EDH-RSA-DES-CBC-SHA"
 220 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA       "EDH-RSA-DES-CBC3-SHA"
 221
 222 #define SSL3_TXT_ADH_RC4_40_MD5                 "EXP-ADH-RC4-MD5"
 223 #define SSL3_TXT_ADH_RC4_128_MD5                "ADH-RC4-MD5"
 224 #define SSL3_TXT_ADH_DES_40_CBC_SHA             "EXP-ADH-DES-CBC-SHA"
 225 #define SSL3_TXT_ADH_DES_64_CBC_SHA             "ADH-DES-CBC-SHA"
 226 #define SSL3_TXT_ADH_DES_192_CBC_SHA            "ADH-DES-CBC3-SHA"
 227
 228 #define SSL3_TXT_FZA_DMS_NULL_SHA               "FZA-NULL-SHA"
 229 #define SSL3_TXT_FZA_DMS_FZA_SHA                "FZA-FZA-CBC-SHA"
 230 #define SSL3_TXT_FZA_DMS_RC4_SHA                "FZA-RC4-SHA"
 231
 232 #define SSL3_TXT_KRB5_DES_64_CBC_SHA            "KRB5-DES-CBC-SHA"
 233 #define SSL3_TXT_KRB5_DES_192_CBC3_SHA          "KRB5-DES-CBC3-SHA"
 234 #define SSL3_TXT_KRB5_RC4_128_SHA               "KRB5-RC4-SHA"
 235 #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA          "KRB5-IDEA-CBC-SHA"
 236 #define SSL3_TXT_KRB5_DES_64_CBC_MD5            "KRB5-DES-CBC-MD5"
 237 #define SSL3_TXT_KRB5_DES_192_CBC3_MD5          "KRB5-DES-CBC3-MD5"
 238 #define SSL3_TXT_KRB5_RC4_128_MD5               "KRB5-RC4-MD5"
 239 #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5          "KRB5-IDEA-CBC-MD5"
 240
 241 #define SSL3_TXT_KRB5_DES_40_CBC_SHA            "EXP-KRB5-DES-CBC-SHA"
 242 #define SSL3_TXT_KRB5_RC2_40_CBC_SHA            "EXP-KRB5-RC2-CBC-SHA"
 243 #define SSL3_TXT_KRB5_RC4_40_SHA                "EXP-KRB5-RC4-SHA"
 244 #define SSL3_TXT_KRB5_DES_40_CBC_MD5            "EXP-KRB5-DES-CBC-MD5"
 245 #define SSL3_TXT_KRB5_RC2_40_CBC_MD5            "EXP-KRB5-RC2-CBC-MD5"
 246 #define SSL3_TXT_KRB5_RC4_40_MD5                "EXP-KRB5-RC4-MD5"
 247
 248 #define SSL3_SSL_SESSION_ID_LENGTH              32
 249 #define SSL3_MAX_SSL_SESSION_ID_LENGTH          32
 250
 251 #define SSL3_MASTER_SECRET_SIZE                 48
 252 #define SSL3_RANDOM_SIZE                        32
 253 #define SSL3_SESSION_ID_SIZE                    32
 254 #define SSL3_RT_HEADER_LENGTH                   5
 255
 256 /* Due to MS stuffing up, this can change.... */
 257 #if defined(OPENSSL_SYS_WIN16) || \
 258         (defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32))
 259 #define SSL3_RT_MAX_EXTRA                       (14000)
 260 #else
 261 #define SSL3_RT_MAX_EXTRA                       (16384)
 262 #endif
 263
 264 #define SSL3_RT_MAX_PLAIN_LENGTH                16384
 265 #ifdef OPENSSL_NO_COMP
 266 #define SSL3_RT_MAX_COMPRESSED_LENGTH   SSL3_RT_MAX_PLAIN_LENGTH
 267 #else
 268 #define SSL3_RT_MAX_COMPRESSED_LENGTH   (1024+SSL3_RT_MAX_PLAIN_LENGTH)
 269 #endif
 270 #define SSL3_RT_MAX_ENCRYPTED_LENGTH    (1024+SSL3_RT_MAX_COMPRESSED_LENGTH)
 271 #define SSL3_RT_MAX_PACKET_SIZE         (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
 272 #define SSL3_RT_MAX_DATA_SIZE                   (1024*1024)
 273
 274 #define SSL3_MD_CLIENT_FINISHED_CONST   "\x43\x4C\x4E\x54"
 275 #define SSL3_MD_SERVER_FINISHED_CONST   "\x53\x52\x56\x52"
 276
 277 #define SSL3_VERSION                    0x0300
 278 #define SSL3_VERSION_MAJOR              0x03
 279 #define SSL3_VERSION_MINOR              0x00
 280
 281 #define SSL3_RT_CHANGE_CIPHER_SPEC      20
 282 #define SSL3_RT_ALERT                   21
 283 #define SSL3_RT_HANDSHAKE               22
 284 #define SSL3_RT_APPLICATION_DATA        23
 285
 286 #define SSL3_AL_WARNING                 1
 287 #define SSL3_AL_FATAL                   2
 288
 289 #define SSL3_AD_CLOSE_NOTIFY             0
 290 #define SSL3_AD_UNEXPECTED_MESSAGE      10      /* fatal */
 291 #define SSL3_AD_BAD_RECORD_MAC          20      /* fatal */
 292 #define SSL3_AD_DECOMPRESSION_FAILURE   30      /* fatal */
 293 #define SSL3_AD_HANDSHAKE_FAILURE       40      /* fatal */
 294 #define SSL3_AD_NO_CERTIFICATE          41
 295 #define SSL3_AD_BAD_CERTIFICATE         42
 296 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
 297 #define SSL3_AD_CERTIFICATE_REVOKED     44
 298 #define SSL3_AD_CERTIFICATE_EXPIRED     45
 299 #define SSL3_AD_CERTIFICATE_UNKNOWN     46
 300 #define SSL3_AD_ILLEGAL_PARAMETER       47      /* fatal */
 301
 302 typedef struct ssl3_record_st
 303         {
 304 /*r */  int type;               /* type of record */
 305 /*rw*/  unsigned int length;    /* How many bytes available */
 306 /*r */  unsigned int off;       /* read/write offset into 'buf' */
 307 /*rw*/  unsigned char *data;    /* pointer to the record data */
 308 /*rw*/  unsigned char *input;   /* where the decode bytes are */
 309 /*r */  unsigned char *comp;    /* only used with decompression - malloc()ed */
 310 /*r */  unsigned long epoch;    /* epoch number, needed by DTLS1 */
 311 /*r */  PQ_64BIT seq_num;       /* sequence number, needed by DTLS1 */
 312         } SSL3_RECORD;
 313
 314 typedef struct ssl3_buffer_st
 315         {
 316         unsigned char *buf;     /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
 317                                  * see ssl3_setup_buffers() */
 318         size_t len;             /* buffer size */
 319         int offset;             /* where to 'copy from' */
 320         int left;               /* how many bytes left */
 321         } SSL3_BUFFER;
 322
 323 #define SSL3_CT_RSA_SIGN                        1
 324 #define SSL3_CT_DSS_SIGN                        2
 325 #define SSL3_CT_RSA_FIXED_DH                    3
 326 #define SSL3_CT_DSS_FIXED_DH                    4
 327 #define SSL3_CT_RSA_EPHEMERAL_DH                5
 328 #define SSL3_CT_DSS_EPHEMERAL_DH                6
 329 #define SSL3_CT_FORTEZZA_DMS                    20
 330 /* SSL3_CT_NUMBER is used to size arrays and it must be large
 331  * enough to contain all of the cert types defined either for
 332  * SSLv3 and TLSv1.
 333  */
 334 #define SSL3_CT_NUMBER                  7
 335
 336
 337 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS       0x0001
 338 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED        0x0002
 339 #define SSL3_FLAGS_POP_BUFFER                   0x0004
 340 #define TLS1_FLAGS_TLS_PADDING_BUG              0x0008
 341 #define SSL3_FLAGS_CCS_OK                       0x0080
 342
 343 /* SSL3_FLAGS_SGC_RESTART_DONE is set when we
 344  * restart a handshake because of MS SGC and so prevents us
 345  * from restarting the handshake in a loop. It's reset on a
 346  * renegotiation, so effectively limits the client to one restart
 347  * per negotiation. This limits the possibility of a DDoS
 348  * attack where the client handshakes in a loop using SGC to
 349  * restart. Servers which permit renegotiation can still be
 350  * effected, but we can't prevent that.
 351  */
 352 #define SSL3_FLAGS_SGC_RESTART_DONE             0x0040
 353
 354 typedef struct ssl3_state_st
 355         {
 356         long flags;
 357         int delay_buf_pop_ret;
 358
 359         unsigned char read_sequence[8];
 360         unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
 361         unsigned char write_sequence[8];
 362         unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
 363
 364         unsigned char server_random[SSL3_RANDOM_SIZE];
 365         unsigned char client_random[SSL3_RANDOM_SIZE];
 366
 367         /* flags for countermeasure against known-IV weakness */
 368         int need_empty_fragments;
 369         int empty_fragment_done;
 370
 371         SSL3_BUFFER rbuf;       /* read IO goes into here */
 372         SSL3_BUFFER wbuf;       /* write IO goes into here */
 373
 374         SSL3_RECORD rrec;       /* each decoded record goes in here */
 375         SSL3_RECORD wrec;       /* goes out from here */
 376
 377         /* storage for Alert/Handshake protocol data received but not
 378          * yet processed by ssl3_read_bytes: */
 379         unsigned char alert_fragment[2];
 380         unsigned int alert_fragment_len;
 381         unsigned char handshake_fragment[4];
 382         unsigned int handshake_fragment_len;
 383
 384         /* partial write - check the numbers match */
 385         unsigned int wnum;      /* number of bytes sent so far */
 386         int wpend_tot;          /* number bytes written */
 387         int wpend_type;
 388         int wpend_ret;          /* number of bytes submitted */
 389         const unsigned char *wpend_buf;
 390
 391         /* used during startup, digest all incoming/outgoing packets */
 392         EVP_MD_CTX finish_dgst1;
 393         EVP_MD_CTX finish_dgst2;
 394
 395         /* this is set whenerver we see a change_cipher_spec message
 396          * come in when we are not looking for one */
 397         int change_cipher_spec;
 398
 399         int warn_alert;
 400         int fatal_alert;
 401         /* we allow one fatal and one warning alert to be outstanding,
 402          * send close alert via the warning alert */
 403         int alert_dispatch;
 404         unsigned char send_alert[2];
 405
 406         /* This flag is set when we should renegotiate ASAP, basically when
 407          * there is no more data in the read or write buffers */
 408         int renegotiate;
 409         int total_renegotiations;
 410         int num_renegotiations;
 411
 412         int in_read_app_data;
 413
 414         struct  {
 415                 /* actually only needs to be 16+20 */
 416                 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
 417
 418                 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
 419                 unsigned char finish_md[EVP_MAX_MD_SIZE*2];
 420                 int finish_md_len;
 421                 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
 422                 int peer_finish_md_len;
 423
 424                 unsigned long message_size;
 425                 int message_type;
 426
 427                 /* used to hold the new cipher we are going to use */
 428                 SSL_CIPHER *new_cipher;
 429 #ifndef OPENSSL_NO_DH
 430                 DH *dh;
 431 #endif
 432
 433 #ifndef OPENSSL_NO_ECDH
 434                 EC_KEY *ecdh; /* holds short lived ECDH key */
 435 #endif
 436
 437                 /* used when SSL_ST_FLUSH_DATA is entered */
 438                 int next_state;
 439
 440                 int reuse_message;
 441
 442                 /* used for certificate requests */
 443                 int cert_req;
 444                 int ctype_num;
 445                 char ctype[SSL3_CT_NUMBER];
 446                 STACK_OF(X509_NAME) *ca_names;
 447
 448                 int use_rsa_tmp;
 449
 450                 int key_block_length;
 451                 unsigned char *key_block;
 452
 453                 const EVP_CIPHER *new_sym_enc;
 454                 const EVP_MD *new_hash;
 455 #ifndef OPENSSL_NO_COMP
 456                 const SSL_COMP *new_compression;
 457 #else
 458                 char *new_compression;
 459 #endif
 460                 int cert_request;
 461                 } tmp;
 462
 463         /* Connection binding to prevent renegotiation attacks */
 464         unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
 465         unsigned char previous_client_finished_len;
 466         unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
 467         unsigned char previous_server_finished_len;
 468         int send_connection_binding; /* TODOEKR */
 469
 470 #ifndef OPENSSL_NO_TLSEXT
 471 #ifndef OPENSSL_NO_EC
 472         /* This is set to true if we believe that this is a version of Safari
 473          * running on OS X 10.6 or newer. We wish to know this because Safari
 474          * on 10.8 .. 10.8.3 has broken ECDHE-ECDSA support. */
 475         char is_probably_safari;
 476 #endif /* !OPENSSL_NO_EC */
 477 #endif /* !OPENSSL_NO_TLSEXT */
 478         } SSL3_STATE;
 479
 480
 481 /* SSLv3 */
 482 /*client */
 483 /* extra state */
 484 #define SSL3_ST_CW_FLUSH                (0x100|SSL_ST_CONNECT)
 485 /* write to server */
 486 #define SSL3_ST_CW_CLNT_HELLO_A         (0x110|SSL_ST_CONNECT)
 487 #define SSL3_ST_CW_CLNT_HELLO_B         (0x111|SSL_ST_CONNECT)
 488 /* read from server */
 489 #define SSL3_ST_CR_SRVR_HELLO_A         (0x120|SSL_ST_CONNECT)
 490 #define SSL3_ST_CR_SRVR_HELLO_B         (0x121|SSL_ST_CONNECT)
 491 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT)
 492 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT)
 493 #define SSL3_ST_CR_CERT_A               (0x130|SSL_ST_CONNECT)
 494 #define SSL3_ST_CR_CERT_B               (0x131|SSL_ST_CONNECT)
 495 #define SSL3_ST_CR_KEY_EXCH_A           (0x140|SSL_ST_CONNECT)
 496 #define SSL3_ST_CR_KEY_EXCH_B           (0x141|SSL_ST_CONNECT)
 497 #define SSL3_ST_CR_CERT_REQ_A           (0x150|SSL_ST_CONNECT)
 498 #define SSL3_ST_CR_CERT_REQ_B           (0x151|SSL_ST_CONNECT)
 499 #define SSL3_ST_CR_SRVR_DONE_A          (0x160|SSL_ST_CONNECT)
 500 #define SSL3_ST_CR_SRVR_DONE_B          (0x161|SSL_ST_CONNECT)
 501 /* write to server */
 502 #define SSL3_ST_CW_CERT_A               (0x170|SSL_ST_CONNECT)
 503 #define SSL3_ST_CW_CERT_B               (0x171|SSL_ST_CONNECT)
 504 #define SSL3_ST_CW_CERT_C               (0x172|SSL_ST_CONNECT)
 505 #define SSL3_ST_CW_CERT_D               (0x173|SSL_ST_CONNECT)
 506 #define SSL3_ST_CW_KEY_EXCH_A           (0x180|SSL_ST_CONNECT)
 507 #define SSL3_ST_CW_KEY_EXCH_B           (0x181|SSL_ST_CONNECT)
 508 #define SSL3_ST_CW_CERT_VRFY_A          (0x190|SSL_ST_CONNECT)
 509 #define SSL3_ST_CW_CERT_VRFY_B          (0x191|SSL_ST_CONNECT)
 510 #define SSL3_ST_CW_CHANGE_A             (0x1A0|SSL_ST_CONNECT)
 511 #define SSL3_ST_CW_CHANGE_B             (0x1A1|SSL_ST_CONNECT)
 512 #define SSL3_ST_CW_FINISHED_A           (0x1B0|SSL_ST_CONNECT)
 513 #define SSL3_ST_CW_FINISHED_B           (0x1B1|SSL_ST_CONNECT)
 514 /* read from server */
 515 #define SSL3_ST_CR_CHANGE_A             (0x1C0|SSL_ST_CONNECT)
 516 #define SSL3_ST_CR_CHANGE_B             (0x1C1|SSL_ST_CONNECT)
 517 #define SSL3_ST_CR_FINISHED_A           (0x1D0|SSL_ST_CONNECT)
 518 #define SSL3_ST_CR_FINISHED_B           (0x1D1|SSL_ST_CONNECT)
 519 #define SSL3_ST_CR_SESSION_TICKET_A     (0x1E0|SSL_ST_CONNECT)
 520 #define SSL3_ST_CR_SESSION_TICKET_B     (0x1E1|SSL_ST_CONNECT)
 521 #define SSL3_ST_CR_CERT_STATUS_A        (0x1F0|SSL_ST_CONNECT)
 522 #define SSL3_ST_CR_CERT_STATUS_B        (0x1F1|SSL_ST_CONNECT)
 523
 524 /* server */
 525 /* extra state */
 526 #define SSL3_ST_SW_FLUSH                (0x100|SSL_ST_ACCEPT)
 527 /* read from client */
 528 /* Do not change the number values, they do matter */
 529 #define SSL3_ST_SR_CLNT_HELLO_A         (0x110|SSL_ST_ACCEPT)
 530 #define SSL3_ST_SR_CLNT_HELLO_B         (0x111|SSL_ST_ACCEPT)
 531 #define SSL3_ST_SR_CLNT_HELLO_C         (0x112|SSL_ST_ACCEPT)
 532 /* write to client */
 533 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT)
 534 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT)
 535 #define SSL3_ST_SW_HELLO_REQ_A          (0x120|SSL_ST_ACCEPT)
 536 #define SSL3_ST_SW_HELLO_REQ_B          (0x121|SSL_ST_ACCEPT)
 537 #define SSL3_ST_SW_HELLO_REQ_C          (0x122|SSL_ST_ACCEPT)
 538 #define SSL3_ST_SW_SRVR_HELLO_A         (0x130|SSL_ST_ACCEPT)
 539 #define SSL3_ST_SW_SRVR_HELLO_B         (0x131|SSL_ST_ACCEPT)
 540 #define SSL3_ST_SW_CERT_A               (0x140|SSL_ST_ACCEPT)
 541 #define SSL3_ST_SW_CERT_B               (0x141|SSL_ST_ACCEPT)
 542 #define SSL3_ST_SW_KEY_EXCH_A           (0x150|SSL_ST_ACCEPT)
 543 #define SSL3_ST_SW_KEY_EXCH_B           (0x151|SSL_ST_ACCEPT)
 544 #define SSL3_ST_SW_CERT_REQ_A           (0x160|SSL_ST_ACCEPT)
 545 #define SSL3_ST_SW_CERT_REQ_B           (0x161|SSL_ST_ACCEPT)
 546 #define SSL3_ST_SW_SRVR_DONE_A          (0x170|SSL_ST_ACCEPT)
 547 #define SSL3_ST_SW_SRVR_DONE_B          (0x171|SSL_ST_ACCEPT)
 548 /* read from client */
 549 #define SSL3_ST_SR_CERT_A               (0x180|SSL_ST_ACCEPT)
 550 #define SSL3_ST_SR_CERT_B               (0x181|SSL_ST_ACCEPT)
 551 #define SSL3_ST_SR_KEY_EXCH_A           (0x190|SSL_ST_ACCEPT)
 552 #define SSL3_ST_SR_KEY_EXCH_B           (0x191|SSL_ST_ACCEPT)
 553 #define SSL3_ST_SR_CERT_VRFY_A          (0x1A0|SSL_ST_ACCEPT)
 554 #define SSL3_ST_SR_CERT_VRFY_B          (0x1A1|SSL_ST_ACCEPT)
 555 #define SSL3_ST_SR_CHANGE_A             (0x1B0|SSL_ST_ACCEPT)
 556 #define SSL3_ST_SR_CHANGE_B             (0x1B1|SSL_ST_ACCEPT)
 557 #define SSL3_ST_SR_FINISHED_A           (0x1C0|SSL_ST_ACCEPT)
 558 #define SSL3_ST_SR_FINISHED_B           (0x1C1|SSL_ST_ACCEPT)
 559 /* write to client */
 560 #define SSL3_ST_SW_CHANGE_A             (0x1D0|SSL_ST_ACCEPT)
 561 #define SSL3_ST_SW_CHANGE_B             (0x1D1|SSL_ST_ACCEPT)
 562 #define SSL3_ST_SW_FINISHED_A           (0x1E0|SSL_ST_ACCEPT)
 563 #define SSL3_ST_SW_FINISHED_B           (0x1E1|SSL_ST_ACCEPT)
 564 #define SSL3_ST_SW_SESSION_TICKET_A     (0x1F0|SSL_ST_ACCEPT)
 565 #define SSL3_ST_SW_SESSION_TICKET_B     (0x1F1|SSL_ST_ACCEPT)
 566 #define SSL3_ST_SW_CERT_STATUS_A        (0x200|SSL_ST_ACCEPT)
 567 #define SSL3_ST_SW_CERT_STATUS_B        (0x201|SSL_ST_ACCEPT)
 568
 569 #define SSL3_MT_HELLO_REQUEST                   0
 570 #define SSL3_MT_CLIENT_HELLO                    1
 571 #define SSL3_MT_SERVER_HELLO                    2
 572 #define SSL3_MT_NEWSESSION_TICKET               4
 573 #define SSL3_MT_CERTIFICATE                     11
 574 #define SSL3_MT_SERVER_KEY_EXCHANGE             12
 575 #define SSL3_MT_CERTIFICATE_REQUEST             13
 576 #define SSL3_MT_SERVER_DONE                     14
 577 #define SSL3_MT_CERTIFICATE_VERIFY              15
 578 #define SSL3_MT_CLIENT_KEY_EXCHANGE             16
 579 #define SSL3_MT_FINISHED                        20
 580 #define SSL3_MT_CERTIFICATE_STATUS              22
 581 #define DTLS1_MT_HELLO_VERIFY_REQUEST    3
 582
 583
 584 #define SSL3_MT_CCS                             1
 585
 586 /* These are used when changing over to a new cipher */
 587 #define SSL3_CC_READ            0x01
 588 #define SSL3_CC_WRITE           0x02
 589 #define SSL3_CC_CLIENT          0x10
 590 #define SSL3_CC_SERVER          0x20
 591 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE)
 592 #define SSL3_CHANGE_CIPHER_SERVER_READ  (SSL3_CC_SERVER|SSL3_CC_READ)
 593 #define SSL3_CHANGE_CIPHER_CLIENT_READ  (SSL3_CC_CLIENT|SSL3_CC_READ)
 594 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE)
 595
 596 #ifdef  __cplusplus
 597 }
 598 #endif
 599 #endif
 600