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