crypto/openssl/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 draft-ietf-tls-renegotiation-03.txt */
 133 #define SSL3_CK_SCSV                            0x030000FF
 134
 135 #define SSL3_CK_RSA_NULL_MD5                    0x03000001
 136 #define SSL3_CK_RSA_NULL_SHA                    0x03000002
 137 #define SSL3_CK_RSA_RC4_40_MD5                  0x03000003
 138 #define SSL3_CK_RSA_RC4_128_MD5                 0x03000004
 139 #define SSL3_CK_RSA_RC4_128_SHA                 0x03000005
 140 #define SSL3_CK_RSA_RC2_40_MD5                  0x03000006
 141 #define SSL3_CK_RSA_IDEA_128_SHA                0x03000007
 142 #define SSL3_CK_RSA_DES_40_CBC_SHA              0x03000008
 143 #define SSL3_CK_RSA_DES_64_CBC_SHA              0x03000009
 144 #define SSL3_CK_RSA_DES_192_CBC3_SHA            0x0300000A
 145
 146 #define SSL3_CK_DH_DSS_DES_40_CBC_SHA           0x0300000B
 147 #define SSL3_CK_DH_DSS_DES_64_CBC_SHA           0x0300000C
 148 #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA         0x0300000D
 149 #define SSL3_CK_DH_RSA_DES_40_CBC_SHA           0x0300000E
 150 #define SSL3_CK_DH_RSA_DES_64_CBC_SHA           0x0300000F
 151 #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA         0x03000010
 152
 153 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA          0x03000011
 154 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA          0x03000012
 155 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA        0x03000013
 156 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA          0x03000014
 157 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA          0x03000015
 158 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA        0x03000016
 159
 160 #define SSL3_CK_ADH_RC4_40_MD5                  0x03000017
 161 #define SSL3_CK_ADH_RC4_128_MD5                 0x03000018
 162 #define SSL3_CK_ADH_DES_40_CBC_SHA              0x03000019
 163 #define SSL3_CK_ADH_DES_64_CBC_SHA              0x0300001A
 164 #define SSL3_CK_ADH_DES_192_CBC_SHA             0x0300001B
 165
 166 #define SSL3_CK_FZA_DMS_NULL_SHA                0x0300001C
 167 #define SSL3_CK_FZA_DMS_FZA_SHA                 0x0300001D
 168 #if 0 /* Because it clashes with KRB5, is never used any more, and is safe
 169          to remove according to David Hopwood <david.hopwood@zetnet.co.uk>
 170          of the ietf-tls list */
 171 #define SSL3_CK_FZA_DMS_RC4_SHA                 0x0300001E
 172 #endif
 173
 174 /*    VRS Additional Kerberos5 entries
 175  */
 176 #define SSL3_CK_KRB5_DES_64_CBC_SHA             0x0300001E
 177 #define SSL3_CK_KRB5_DES_192_CBC3_SHA           0x0300001F
 178 #define SSL3_CK_KRB5_RC4_128_SHA                0x03000020
 179 #define SSL3_CK_KRB5_IDEA_128_CBC_SHA           0x03000021
 180 #define SSL3_CK_KRB5_DES_64_CBC_MD5             0x03000022
 181 #define SSL3_CK_KRB5_DES_192_CBC3_MD5           0x03000023
 182 #define SSL3_CK_KRB5_RC4_128_MD5                0x03000024
 183 #define SSL3_CK_KRB5_IDEA_128_CBC_MD5           0x03000025
 184
 185 #define SSL3_CK_KRB5_DES_40_CBC_SHA             0x03000026
 186 #define SSL3_CK_KRB5_RC2_40_CBC_SHA             0x03000027
 187 #define SSL3_CK_KRB5_RC4_40_SHA                 0x03000028
 188 #define SSL3_CK_KRB5_DES_40_CBC_MD5             0x03000029
 189 #define SSL3_CK_KRB5_RC2_40_CBC_MD5             0x0300002A
 190 #define SSL3_CK_KRB5_RC4_40_MD5                 0x0300002B
 191
 192 #define SSL3_TXT_RSA_NULL_MD5                   "NULL-MD5"
 193 #define SSL3_TXT_RSA_NULL_SHA                   "NULL-SHA"
 194 #define SSL3_TXT_RSA_RC4_40_MD5                 "EXP-RC4-MD5"
 195 #define SSL3_TXT_RSA_RC4_128_MD5                "RC4-MD5"
 196 #define SSL3_TXT_RSA_RC4_128_SHA                "RC4-SHA"
 197 #define SSL3_TXT_RSA_RC2_40_MD5                 "EXP-RC2-CBC-MD5"
 198 #define SSL3_TXT_RSA_IDEA_128_SHA               "IDEA-CBC-SHA"
 199 #define SSL3_TXT_RSA_DES_40_CBC_SHA             "EXP-DES-CBC-SHA"
 200 #define SSL3_TXT_RSA_DES_64_CBC_SHA             "DES-CBC-SHA"
 201 #define SSL3_TXT_RSA_DES_192_CBC3_SHA           "DES-CBC3-SHA"
 202
 203 #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA          "EXP-DH-DSS-DES-CBC-SHA"
 204 #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA          "DH-DSS-DES-CBC-SHA"
 205 #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA        "DH-DSS-DES-CBC3-SHA"
 206 #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA          "EXP-DH-RSA-DES-CBC-SHA"
 207 #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA          "DH-RSA-DES-CBC-SHA"
 208 #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA        "DH-RSA-DES-CBC3-SHA"
 209
 210 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA         "EXP-EDH-DSS-DES-CBC-SHA"
 211 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA         "EDH-DSS-DES-CBC-SHA"
 212 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA       "EDH-DSS-DES-CBC3-SHA"
 213 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA         "EXP-EDH-RSA-DES-CBC-SHA"
 214 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA         "EDH-RSA-DES-CBC-SHA"
 215 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA       "EDH-RSA-DES-CBC3-SHA"
 216
 217 #define SSL3_TXT_ADH_RC4_40_MD5                 "EXP-ADH-RC4-MD5"
 218 #define SSL3_TXT_ADH_RC4_128_MD5                "ADH-RC4-MD5"
 219 #define SSL3_TXT_ADH_DES_40_CBC_SHA             "EXP-ADH-DES-CBC-SHA"
 220 #define SSL3_TXT_ADH_DES_64_CBC_SHA             "ADH-DES-CBC-SHA"
 221 #define SSL3_TXT_ADH_DES_192_CBC_SHA            "ADH-DES-CBC3-SHA"
 222
 223 #define SSL3_TXT_FZA_DMS_NULL_SHA               "FZA-NULL-SHA"
 224 #define SSL3_TXT_FZA_DMS_FZA_SHA                "FZA-FZA-CBC-SHA"
 225 #define SSL3_TXT_FZA_DMS_RC4_SHA                "FZA-RC4-SHA"
 226
 227 #define SSL3_TXT_KRB5_DES_64_CBC_SHA            "KRB5-DES-CBC-SHA"
 228 #define SSL3_TXT_KRB5_DES_192_CBC3_SHA          "KRB5-DES-CBC3-SHA"
 229 #define SSL3_TXT_KRB5_RC4_128_SHA               "KRB5-RC4-SHA"
 230 #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA          "KRB5-IDEA-CBC-SHA"
 231 #define SSL3_TXT_KRB5_DES_64_CBC_MD5            "KRB5-DES-CBC-MD5"
 232 #define SSL3_TXT_KRB5_DES_192_CBC3_MD5          "KRB5-DES-CBC3-MD5"
 233 #define SSL3_TXT_KRB5_RC4_128_MD5               "KRB5-RC4-MD5"
 234 #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5          "KRB5-IDEA-CBC-MD5"
 235
 236 #define SSL3_TXT_KRB5_DES_40_CBC_SHA            "EXP-KRB5-DES-CBC-SHA"
 237 #define SSL3_TXT_KRB5_RC2_40_CBC_SHA            "EXP-KRB5-RC2-CBC-SHA"
 238 #define SSL3_TXT_KRB5_RC4_40_SHA                "EXP-KRB5-RC4-SHA"
 239 #define SSL3_TXT_KRB5_DES_40_CBC_MD5            "EXP-KRB5-DES-CBC-MD5"
 240 #define SSL3_TXT_KRB5_RC2_40_CBC_MD5            "EXP-KRB5-RC2-CBC-MD5"
 241 #define SSL3_TXT_KRB5_RC4_40_MD5                "EXP-KRB5-RC4-MD5"
 242
 243 #define SSL3_SSL_SESSION_ID_LENGTH              32
 244 #define SSL3_MAX_SSL_SESSION_ID_LENGTH          32
 245
 246 #define SSL3_MASTER_SECRET_SIZE                 48
 247 #define SSL3_RANDOM_SIZE                        32
 248 #define SSL3_SESSION_ID_SIZE                    32
 249 #define SSL3_RT_HEADER_LENGTH                   5
 250
 251 /* Due to MS stuffing up, this can change.... */
 252 #if defined(OPENSSL_SYS_WIN16) || \
 253         (defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32))
 254 #define SSL3_RT_MAX_EXTRA                       (14000)
 255 #else
 256 #define SSL3_RT_MAX_EXTRA                       (16384)
 257 #endif
 258
 259 #define SSL3_RT_MAX_PLAIN_LENGTH                16384
 260 #ifdef OPENSSL_NO_COMP
 261 #define SSL3_RT_MAX_COMPRESSED_LENGTH   SSL3_RT_MAX_PLAIN_LENGTH
 262 #else
 263 #define SSL3_RT_MAX_COMPRESSED_LENGTH   (1024+SSL3_RT_MAX_PLAIN_LENGTH)
 264 #endif
 265 #define SSL3_RT_MAX_ENCRYPTED_LENGTH    (1024+SSL3_RT_MAX_COMPRESSED_LENGTH)
 266 #define SSL3_RT_MAX_PACKET_SIZE         (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
 267 #define SSL3_RT_MAX_DATA_SIZE                   (1024*1024)
 268
 269 #define SSL3_MD_CLIENT_FINISHED_CONST   "\x43\x4C\x4E\x54"
 270 #define SSL3_MD_SERVER_FINISHED_CONST   "\x53\x52\x56\x52"
 271
 272 #define SSL3_VERSION                    0x0300
 273 #define SSL3_VERSION_MAJOR              0x03
 274 #define SSL3_VERSION_MINOR              0x00
 275
 276 #define SSL3_RT_CHANGE_CIPHER_SPEC      20
 277 #define SSL3_RT_ALERT                   21
 278 #define SSL3_RT_HANDSHAKE               22
 279 #define SSL3_RT_APPLICATION_DATA        23
 280
 281 #define SSL3_AL_WARNING                 1
 282 #define SSL3_AL_FATAL                   2
 283
 284 #define SSL3_AD_CLOSE_NOTIFY             0
 285 #define SSL3_AD_UNEXPECTED_MESSAGE      10      /* fatal */
 286 #define SSL3_AD_BAD_RECORD_MAC          20      /* fatal */
 287 #define SSL3_AD_DECOMPRESSION_FAILURE   30      /* fatal */
 288 #define SSL3_AD_HANDSHAKE_FAILURE       40      /* fatal */
 289 #define SSL3_AD_NO_CERTIFICATE          41
 290 #define SSL3_AD_BAD_CERTIFICATE         42
 291 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
 292 #define SSL3_AD_CERTIFICATE_REVOKED     44
 293 #define SSL3_AD_CERTIFICATE_EXPIRED     45
 294 #define SSL3_AD_CERTIFICATE_UNKNOWN     46
 295 #define SSL3_AD_ILLEGAL_PARAMETER       47      /* fatal */
 296
 297 typedef struct ssl3_record_st
 298         {
 299 /*r */  int type;               /* type of record */
 300 /*rw*/  unsigned int length;    /* How many bytes available */
 301 /*r */  unsigned int off;       /* read/write offset into 'buf' */
 302 /*rw*/  unsigned char *data;    /* pointer to the record data */
 303 /*rw*/  unsigned char *input;   /* where the decode bytes are */
 304 /*r */  unsigned char *comp;    /* only used with decompression - malloc()ed */
 305 /*r */  unsigned long epoch;    /* epoch number, needed by DTLS1 */
 306 /*r */  PQ_64BIT seq_num;       /* sequence number, needed by DTLS1 */
 307         } SSL3_RECORD;
 308
 309 typedef struct ssl3_buffer_st
 310         {
 311         unsigned char *buf;     /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
 312                                  * see ssl3_setup_buffers() */
 313         size_t len;             /* buffer size */
 314         int offset;             /* where to 'copy from' */
 315         int left;               /* how many bytes left */
 316         } SSL3_BUFFER;
 317
 318 #define SSL3_CT_RSA_SIGN                        1
 319 #define SSL3_CT_DSS_SIGN                        2
 320 #define SSL3_CT_RSA_FIXED_DH                    3
 321 #define SSL3_CT_DSS_FIXED_DH                    4
 322 #define SSL3_CT_RSA_EPHEMERAL_DH                5
 323 #define SSL3_CT_DSS_EPHEMERAL_DH                6
 324 #define SSL3_CT_FORTEZZA_DMS                    20
 325 /* SSL3_CT_NUMBER is used to size arrays and it must be large
 326  * enough to contain all of the cert types defined either for
 327  * SSLv3 and TLSv1.
 328  */
 329 #define SSL3_CT_NUMBER                  7
 330
 331
 332 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS       0x0001
 333 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED        0x0002
 334 #define SSL3_FLAGS_POP_BUFFER                   0x0004
 335 #define TLS1_FLAGS_TLS_PADDING_BUG              0x0008
 336
 337 typedef struct ssl3_state_st
 338         {
 339         long flags;
 340         int delay_buf_pop_ret;
 341
 342         unsigned char read_sequence[8];
 343         unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
 344         unsigned char write_sequence[8];
 345         unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
 346
 347         unsigned char server_random[SSL3_RANDOM_SIZE];
 348         unsigned char client_random[SSL3_RANDOM_SIZE];
 349
 350         /* flags for countermeasure against known-IV weakness */
 351         int need_empty_fragments;
 352         int empty_fragment_done;
 353
 354         SSL3_BUFFER rbuf;       /* read IO goes into here */
 355         SSL3_BUFFER wbuf;       /* write IO goes into here */
 356
 357         SSL3_RECORD rrec;       /* each decoded record goes in here */
 358         SSL3_RECORD wrec;       /* goes out from here */
 359
 360         /* storage for Alert/Handshake protocol data received but not
 361          * yet processed by ssl3_read_bytes: */
 362         unsigned char alert_fragment[2];
 363         unsigned int alert_fragment_len;
 364         unsigned char handshake_fragment[4];
 365         unsigned int handshake_fragment_len;
 366
 367         /* partial write - check the numbers match */
 368         unsigned int wnum;      /* number of bytes sent so far */
 369         int wpend_tot;          /* number bytes written */
 370         int wpend_type;
 371         int wpend_ret;          /* number of bytes submitted */
 372         const unsigned char *wpend_buf;
 373
 374         /* used during startup, digest all incoming/outgoing packets */
 375         EVP_MD_CTX finish_dgst1;
 376         EVP_MD_CTX finish_dgst2;
 377
 378         /* this is set whenerver we see a change_cipher_spec message
 379          * come in when we are not looking for one */
 380         int change_cipher_spec;
 381
 382         int warn_alert;
 383         int fatal_alert;
 384         /* we allow one fatal and one warning alert to be outstanding,
 385          * send close alert via the warning alert */
 386         int alert_dispatch;
 387         unsigned char send_alert[2];
 388
 389         /* This flag is set when we should renegotiate ASAP, basically when
 390          * there is no more data in the read or write buffers */
 391         int renegotiate;
 392         int total_renegotiations;
 393         int num_renegotiations;
 394
 395         int in_read_app_data;
 396
 397         struct  {
 398                 /* actually only needs to be 16+20 */
 399                 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
 400
 401                 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
 402                 unsigned char finish_md[EVP_MAX_MD_SIZE*2];
 403                 int finish_md_len;
 404                 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
 405                 int peer_finish_md_len;
 406
 407                 unsigned long message_size;
 408                 int message_type;
 409
 410                 /* used to hold the new cipher we are going to use */
 411                 SSL_CIPHER *new_cipher;
 412 #ifndef OPENSSL_NO_DH
 413                 DH *dh;
 414 #endif
 415
 416 #ifndef OPENSSL_NO_ECDH
 417                 EC_KEY *ecdh; /* holds short lived ECDH key */
 418 #endif
 419
 420                 /* used when SSL_ST_FLUSH_DATA is entered */
 421                 int next_state;
 422
 423                 int reuse_message;
 424
 425                 /* used for certificate requests */
 426                 int cert_req;
 427                 int ctype_num;
 428                 char ctype[SSL3_CT_NUMBER];
 429                 STACK_OF(X509_NAME) *ca_names;
 430
 431                 int use_rsa_tmp;
 432
 433                 int key_block_length;
 434                 unsigned char *key_block;
 435
 436                 const EVP_CIPHER *new_sym_enc;
 437                 const EVP_MD *new_hash;
 438 #ifndef OPENSSL_NO_COMP
 439                 const SSL_COMP *new_compression;
 440 #else
 441                 char *new_compression;
 442 #endif
 443                 int cert_request;
 444                 } tmp;
 445
 446         /* Connection binding to prevent renegotiation attacks */
 447         unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
 448         unsigned char previous_client_finished_len;
 449         unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
 450         unsigned char previous_server_finished_len;
 451         int send_connection_binding; /* TODOEKR */
 452         } SSL3_STATE;
 453
 454
 455 /* SSLv3 */
 456 /*client */
 457 /* extra state */
 458 #define SSL3_ST_CW_FLUSH                (0x100|SSL_ST_CONNECT)
 459 /* write to server */
 460 #define SSL3_ST_CW_CLNT_HELLO_A         (0x110|SSL_ST_CONNECT)
 461 #define SSL3_ST_CW_CLNT_HELLO_B         (0x111|SSL_ST_CONNECT)
 462 /* read from server */
 463 #define SSL3_ST_CR_SRVR_HELLO_A         (0x120|SSL_ST_CONNECT)
 464 #define SSL3_ST_CR_SRVR_HELLO_B         (0x121|SSL_ST_CONNECT)
 465 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT)
 466 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT)
 467 #define SSL3_ST_CR_CERT_A               (0x130|SSL_ST_CONNECT)
 468 #define SSL3_ST_CR_CERT_B               (0x131|SSL_ST_CONNECT)
 469 #define SSL3_ST_CR_KEY_EXCH_A           (0x140|SSL_ST_CONNECT)
 470 #define SSL3_ST_CR_KEY_EXCH_B           (0x141|SSL_ST_CONNECT)
 471 #define SSL3_ST_CR_CERT_REQ_A           (0x150|SSL_ST_CONNECT)
 472 #define SSL3_ST_CR_CERT_REQ_B           (0x151|SSL_ST_CONNECT)
 473 #define SSL3_ST_CR_SRVR_DONE_A          (0x160|SSL_ST_CONNECT)
 474 #define SSL3_ST_CR_SRVR_DONE_B          (0x161|SSL_ST_CONNECT)
 475 /* write to server */
 476 #define SSL3_ST_CW_CERT_A               (0x170|SSL_ST_CONNECT)
 477 #define SSL3_ST_CW_CERT_B               (0x171|SSL_ST_CONNECT)
 478 #define SSL3_ST_CW_CERT_C               (0x172|SSL_ST_CONNECT)
 479 #define SSL3_ST_CW_CERT_D               (0x173|SSL_ST_CONNECT)
 480 #define SSL3_ST_CW_KEY_EXCH_A           (0x180|SSL_ST_CONNECT)
 481 #define SSL3_ST_CW_KEY_EXCH_B           (0x181|SSL_ST_CONNECT)
 482 #define SSL3_ST_CW_CERT_VRFY_A          (0x190|SSL_ST_CONNECT)
 483 #define SSL3_ST_CW_CERT_VRFY_B          (0x191|SSL_ST_CONNECT)
 484 #define SSL3_ST_CW_CHANGE_A             (0x1A0|SSL_ST_CONNECT)
 485 #define SSL3_ST_CW_CHANGE_B             (0x1A1|SSL_ST_CONNECT)
 486 #define SSL3_ST_CW_FINISHED_A           (0x1B0|SSL_ST_CONNECT)
 487 #define SSL3_ST_CW_FINISHED_B           (0x1B1|SSL_ST_CONNECT)
 488 /* read from server */
 489 #define SSL3_ST_CR_CHANGE_A             (0x1C0|SSL_ST_CONNECT)
 490 #define SSL3_ST_CR_CHANGE_B             (0x1C1|SSL_ST_CONNECT)
 491 #define SSL3_ST_CR_FINISHED_A           (0x1D0|SSL_ST_CONNECT)
 492 #define SSL3_ST_CR_FINISHED_B           (0x1D1|SSL_ST_CONNECT)
 493 #define SSL3_ST_CR_SESSION_TICKET_A     (0x1E0|SSL_ST_CONNECT)
 494 #define SSL3_ST_CR_SESSION_TICKET_B     (0x1E1|SSL_ST_CONNECT)
 495 #define SSL3_ST_CR_CERT_STATUS_A        (0x1F0|SSL_ST_CONNECT)
 496 #define SSL3_ST_CR_CERT_STATUS_B        (0x1F1|SSL_ST_CONNECT)
 497
 498 /* server */
 499 /* extra state */
 500 #define SSL3_ST_SW_FLUSH                (0x100|SSL_ST_ACCEPT)
 501 /* read from client */
 502 /* Do not change the number values, they do matter */
 503 #define SSL3_ST_SR_CLNT_HELLO_A         (0x110|SSL_ST_ACCEPT)
 504 #define SSL3_ST_SR_CLNT_HELLO_B         (0x111|SSL_ST_ACCEPT)
 505 #define SSL3_ST_SR_CLNT_HELLO_C         (0x112|SSL_ST_ACCEPT)
 506 /* write to client */
 507 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT)
 508 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT)
 509 #define SSL3_ST_SW_HELLO_REQ_A          (0x120|SSL_ST_ACCEPT)
 510 #define SSL3_ST_SW_HELLO_REQ_B          (0x121|SSL_ST_ACCEPT)
 511 #define SSL3_ST_SW_HELLO_REQ_C          (0x122|SSL_ST_ACCEPT)
 512 #define SSL3_ST_SW_SRVR_HELLO_A         (0x130|SSL_ST_ACCEPT)
 513 #define SSL3_ST_SW_SRVR_HELLO_B         (0x131|SSL_ST_ACCEPT)
 514 #define SSL3_ST_SW_CERT_A               (0x140|SSL_ST_ACCEPT)
 515 #define SSL3_ST_SW_CERT_B               (0x141|SSL_ST_ACCEPT)
 516 #define SSL3_ST_SW_KEY_EXCH_A           (0x150|SSL_ST_ACCEPT)
 517 #define SSL3_ST_SW_KEY_EXCH_B           (0x151|SSL_ST_ACCEPT)
 518 #define SSL3_ST_SW_CERT_REQ_A           (0x160|SSL_ST_ACCEPT)
 519 #define SSL3_ST_SW_CERT_REQ_B           (0x161|SSL_ST_ACCEPT)
 520 #define SSL3_ST_SW_SRVR_DONE_A          (0x170|SSL_ST_ACCEPT)
 521 #define SSL3_ST_SW_SRVR_DONE_B          (0x171|SSL_ST_ACCEPT)
 522 /* read from client */
 523 #define SSL3_ST_SR_CERT_A               (0x180|SSL_ST_ACCEPT)
 524 #define SSL3_ST_SR_CERT_B               (0x181|SSL_ST_ACCEPT)
 525 #define SSL3_ST_SR_KEY_EXCH_A           (0x190|SSL_ST_ACCEPT)
 526 #define SSL3_ST_SR_KEY_EXCH_B           (0x191|SSL_ST_ACCEPT)
 527 #define SSL3_ST_SR_CERT_VRFY_A          (0x1A0|SSL_ST_ACCEPT)
 528 #define SSL3_ST_SR_CERT_VRFY_B          (0x1A1|SSL_ST_ACCEPT)
 529 #define SSL3_ST_SR_CHANGE_A             (0x1B0|SSL_ST_ACCEPT)
 530 #define SSL3_ST_SR_CHANGE_B             (0x1B1|SSL_ST_ACCEPT)
 531 #define SSL3_ST_SR_FINISHED_A           (0x1C0|SSL_ST_ACCEPT)
 532 #define SSL3_ST_SR_FINISHED_B           (0x1C1|SSL_ST_ACCEPT)
 533 /* write to client */
 534 #define SSL3_ST_SW_CHANGE_A             (0x1D0|SSL_ST_ACCEPT)
 535 #define SSL3_ST_SW_CHANGE_B             (0x1D1|SSL_ST_ACCEPT)
 536 #define SSL3_ST_SW_FINISHED_A           (0x1E0|SSL_ST_ACCEPT)
 537 #define SSL3_ST_SW_FINISHED_B           (0x1E1|SSL_ST_ACCEPT)
 538 #define SSL3_ST_SW_SESSION_TICKET_A     (0x1F0|SSL_ST_ACCEPT)
 539 #define SSL3_ST_SW_SESSION_TICKET_B     (0x1F1|SSL_ST_ACCEPT)
 540 #define SSL3_ST_SW_CERT_STATUS_A        (0x200|SSL_ST_ACCEPT)
 541 #define SSL3_ST_SW_CERT_STATUS_B        (0x201|SSL_ST_ACCEPT)
 542
 543 #define SSL3_MT_HELLO_REQUEST                   0
 544 #define SSL3_MT_CLIENT_HELLO                    1
 545 #define SSL3_MT_SERVER_HELLO                    2
 546 #define SSL3_MT_NEWSESSION_TICKET               4
 547 #define SSL3_MT_CERTIFICATE                     11
 548 #define SSL3_MT_SERVER_KEY_EXCHANGE             12
 549 #define SSL3_MT_CERTIFICATE_REQUEST             13
 550 #define SSL3_MT_SERVER_DONE                     14
 551 #define SSL3_MT_CERTIFICATE_VERIFY              15
 552 #define SSL3_MT_CLIENT_KEY_EXCHANGE             16
 553 #define SSL3_MT_FINISHED                        20
 554 #define SSL3_MT_CERTIFICATE_STATUS              22
 555 #define DTLS1_MT_HELLO_VERIFY_REQUEST    3
 556
 557
 558 #define SSL3_MT_CCS                             1
 559
 560 /* These are used when changing over to a new cipher */
 561 #define SSL3_CC_READ            0x01
 562 #define SSL3_CC_WRITE           0x02
 563 #define SSL3_CC_CLIENT          0x10
 564 #define SSL3_CC_SERVER          0x20
 565 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE)
 566 #define SSL3_CHANGE_CIPHER_SERVER_READ  (SSL3_CC_SERVER|SSL3_CC_READ)
 567 #define SSL3_CHANGE_CIPHER_CLIENT_READ  (SSL3_CC_CLIENT|SSL3_CC_READ)
 568 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE)
 569
 570 #ifdef  __cplusplus
 571 }
 572 #endif
 573 #endif
 574