1 /* ssl/ssl_locl.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) 1998-2007 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  * Copyright 2005 Nokia. All rights reserved.
118  *
119  * The portions of the attached software ("Contribution") is developed by
120  * Nokia Corporation and is licensed pursuant to the OpenSSL open source
121  * license.
122  *
123  * The Contribution, originally written by Mika Kousa and Pasi Eronen of
124  * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
125  * support (see RFC 4279) to OpenSSL.
126  *
127  * No patent licenses or other rights except those expressly stated in
128  * the OpenSSL open source license shall be deemed granted or received
129  * expressly, by implication, estoppel, or otherwise.
130  *
131  * No assurances are provided by Nokia that the Contribution does not
132  * infringe the patent or other intellectual property rights of any third
133  * party or that the license provides you with all the necessary rights
134  * to make use of the Contribution.
135  *
136  * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
137  * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
138  * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
139  * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
140  * OTHERWISE.
141  */
142 
143 #ifndef HEADER_SSL_LOCL_H
144 # define HEADER_SSL_LOCL_H
145 # include <stdlib.h>
146 # include <time.h>
147 # include <string.h>
148 # include <errno.h>
149 
150 # include "e_os.h"
151 
152 # include <openssl/buffer.h>
153 # ifndef OPENSSL_NO_COMP
154 #  include <openssl/comp.h>
155 # endif
156 # include <openssl/bio.h>
157 # include <openssl/stack.h>
158 # ifndef OPENSSL_NO_RSA
159 #  include <openssl/rsa.h>
160 # endif
161 # ifndef OPENSSL_NO_DSA
162 #  include <openssl/dsa.h>
163 # endif
164 # include <openssl/err.h>
165 # include <openssl/ssl.h>
166 # include <openssl/symhacks.h>
167 
168 # ifdef OPENSSL_BUILD_SHLIBSSL
169 #  undef OPENSSL_EXTERN
170 #  define OPENSSL_EXTERN OPENSSL_EXPORT
171 # endif
172 
173 # undef PKCS1_CHECK
174 
175 # define c2l(c,l)        (l = ((unsigned long)(*((c)++)))     , \
176                          l|=(((unsigned long)(*((c)++)))<< 8), \
177                          l|=(((unsigned long)(*((c)++)))<<16), \
178                          l|=(((unsigned long)(*((c)++)))<<24))
179 
180 /* NOTE - c is not incremented as per c2l */
181 # define c2ln(c,l1,l2,n) { \
182                         c+=n; \
183                         l1=l2=0; \
184                         switch (n) { \
185                         case 8: l2 =((unsigned long)(*(--(c))))<<24; \
186                         case 7: l2|=((unsigned long)(*(--(c))))<<16; \
187                         case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
188                         case 5: l2|=((unsigned long)(*(--(c))));     \
189                         case 4: l1 =((unsigned long)(*(--(c))))<<24; \
190                         case 3: l1|=((unsigned long)(*(--(c))))<<16; \
191                         case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
192                         case 1: l1|=((unsigned long)(*(--(c))));     \
193                                 } \
194                         }
195 
196 # define l2c(l,c)        (*((c)++)=(unsigned char)(((l)    )&0xff), \
197                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
198                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
199                          *((c)++)=(unsigned char)(((l)>>24)&0xff))
200 
201 # define n2l(c,l)        (l =((unsigned long)(*((c)++)))<<24, \
202                          l|=((unsigned long)(*((c)++)))<<16, \
203                          l|=((unsigned long)(*((c)++)))<< 8, \
204                          l|=((unsigned long)(*((c)++))))
205 
206 # define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
207                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
208                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
209                          *((c)++)=(unsigned char)(((l)    )&0xff))
210 
211 # define l2n6(l,c)       (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
212                          *((c)++)=(unsigned char)(((l)>>32)&0xff), \
213                          *((c)++)=(unsigned char)(((l)>>24)&0xff), \
214                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
215                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
216                          *((c)++)=(unsigned char)(((l)    )&0xff))
217 
218 # define l2n8(l,c)       (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
219                          *((c)++)=(unsigned char)(((l)>>48)&0xff), \
220                          *((c)++)=(unsigned char)(((l)>>40)&0xff), \
221                          *((c)++)=(unsigned char)(((l)>>32)&0xff), \
222                          *((c)++)=(unsigned char)(((l)>>24)&0xff), \
223                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
224                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
225                          *((c)++)=(unsigned char)(((l)    )&0xff))
226 
227 # define n2l6(c,l)       (l =((BN_ULLONG)(*((c)++)))<<40, \
228                          l|=((BN_ULLONG)(*((c)++)))<<32, \
229                          l|=((BN_ULLONG)(*((c)++)))<<24, \
230                          l|=((BN_ULLONG)(*((c)++)))<<16, \
231                          l|=((BN_ULLONG)(*((c)++)))<< 8, \
232                          l|=((BN_ULLONG)(*((c)++))))
233 
234 /* NOTE - c is not incremented as per l2c */
235 # define l2cn(l1,l2,c,n) { \
236                         c+=n; \
237                         switch (n) { \
238                         case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
239                         case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
240                         case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
241                         case 5: *(--(c))=(unsigned char)(((l2)    )&0xff); \
242                         case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
243                         case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
244                         case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
245                         case 1: *(--(c))=(unsigned char)(((l1)    )&0xff); \
246                                 } \
247                         }
248 
249 # define n2s(c,s)        ((s=(((unsigned int)(c[0]))<< 8)| \
250                             (((unsigned int)(c[1]))    )),c+=2)
251 # define s2n(s,c)        ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
252                           c[1]=(unsigned char)(((s)    )&0xff)),c+=2)
253 
254 # define n2l3(c,l)       ((l =(((unsigned long)(c[0]))<<16)| \
255                              (((unsigned long)(c[1]))<< 8)| \
256                              (((unsigned long)(c[2]))    )),c+=3)
257 
258 # define l2n3(l,c)       ((c[0]=(unsigned char)(((l)>>16)&0xff), \
259                           c[1]=(unsigned char)(((l)>> 8)&0xff), \
260                           c[2]=(unsigned char)(((l)    )&0xff)),c+=3)
261 
262 /* LOCAL STUFF */
263 
264 # define SSL_DECRYPT     0
265 # define SSL_ENCRYPT     1
266 
267 # define TWO_BYTE_BIT    0x80
268 # define SEC_ESC_BIT     0x40
269 # define TWO_BYTE_MASK   0x7fff
270 # define THREE_BYTE_MASK 0x3fff
271 
272 # define INC32(a)        ((a)=((a)+1)&0xffffffffL)
273 # define DEC32(a)        ((a)=((a)-1)&0xffffffffL)
274 # define MAX_MAC_SIZE    20     /* up from 16 for SSLv3 */
275 
276 /*
277  * Define the Bitmasks for SSL_CIPHER.algorithms.
278  * This bits are used packed as dense as possible. If new methods/ciphers
279  * etc will be added, the bits a likely to change, so this information
280  * is for internal library use only, even though SSL_CIPHER.algorithms
281  * can be publicly accessed.
282  * Use the according functions for cipher management instead.
283  *
284  * The bit mask handling in the selection and sorting scheme in
285  * ssl_create_cipher_list() has only limited capabilities, reflecting
286  * that the different entities within are mutually exclusive:
287  * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
288  */
289 
290 /* Bits for algorithm_mkey (key exchange algorithm) */
291 /* RSA key exchange */
292 # define SSL_kRSA                0x00000001L
293 /* DH cert, RSA CA cert */
294 /* no such ciphersuites supported! */
295 # define SSL_kDHr                0x00000002L
296 /* DH cert, DSA CA cert */
297 /* no such ciphersuite supported! */
298 # define SSL_kDHd                0x00000004L
299 /* tmp DH key no DH cert */
300 # define SSL_kEDH                0x00000008L
301 /* Kerberos5 key exchange */
302 # define SSL_kKRB5               0x00000010L
303 /* ECDH cert, RSA CA cert */
304 # define SSL_kECDHr              0x00000020L
305 /* ECDH cert, ECDSA CA cert */
306 # define SSL_kECDHe              0x00000040L
307 /* ephemeral ECDH */
308 # define SSL_kEECDH              0x00000080L
309 /* PSK */
310 # define SSL_kPSK                0x00000100L
311 /* GOST key exchange */
312 # define SSL_kGOST       0x00000200L
313 /* SRP */
314 # define SSL_kSRP        0x00000400L
315 
316 /* Bits for algorithm_auth (server authentication) */
317 /* RSA auth */
318 # define SSL_aRSA                0x00000001L
319 /* DSS auth */
320 # define SSL_aDSS                0x00000002L
321 /* no auth (i.e. use ADH or AECDH) */
322 # define SSL_aNULL               0x00000004L
323 /* Fixed DH auth (kDHd or kDHr) */
324 /* no such ciphersuites supported! */
325 # define SSL_aDH                 0x00000008L
326 /* Fixed ECDH auth (kECDHe or kECDHr) */
327 # define SSL_aECDH               0x00000010L
328 /* KRB5 auth */
329 # define SSL_aKRB5               0x00000020L
330 /* ECDSA auth*/
331 # define SSL_aECDSA              0x00000040L
332 /* PSK auth */
333 # define SSL_aPSK                0x00000080L
334 /* GOST R 34.10-94 signature auth */
335 # define SSL_aGOST94                             0x00000100L
336 /* GOST R 34.10-2001 signature auth */
337 # define SSL_aGOST01                     0x00000200L
338 /* SRP auth */
339 # define SSL_aSRP                0x00000400L
340 
341 /* Bits for algorithm_enc (symmetric encryption) */
342 # define SSL_DES                 0x00000001L
343 # define SSL_3DES                0x00000002L
344 # define SSL_RC4                 0x00000004L
345 # define SSL_RC2                 0x00000008L
346 # define SSL_IDEA                0x00000010L
347 # define SSL_eNULL               0x00000020L
348 # define SSL_AES128              0x00000040L
349 # define SSL_AES256              0x00000080L
350 # define SSL_CAMELLIA128         0x00000100L
351 # define SSL_CAMELLIA256         0x00000200L
352 # define SSL_eGOST2814789CNT     0x00000400L
353 # define SSL_SEED                0x00000800L
354 # define SSL_AES128GCM           0x00001000L
355 # define SSL_AES256GCM           0x00002000L
356 
357 # define SSL_AES                 (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM)
358 # define SSL_CAMELLIA            (SSL_CAMELLIA128|SSL_CAMELLIA256)
359 
360 /* Bits for algorithm_mac (symmetric authentication) */
361 
362 # define SSL_MD5                 0x00000001L
363 # define SSL_SHA1                0x00000002L
364 # define SSL_GOST94      0x00000004L
365 # define SSL_GOST89MAC   0x00000008L
366 # define SSL_SHA256              0x00000010L
367 # define SSL_SHA384              0x00000020L
368 /* Not a real MAC, just an indication it is part of cipher */
369 # define SSL_AEAD                0x00000040L
370 
371 /* Bits for algorithm_ssl (protocol version) */
372 # define SSL_SSLV2               0x00000001UL
373 # define SSL_SSLV3               0x00000002UL
374 # define SSL_TLSV1               SSL_SSLV3/* for now */
375 # define SSL_TLSV1_2             0x00000004UL
376 
377 /* Bits for algorithm2 (handshake digests and other extra flags) */
378 
379 # define SSL_HANDSHAKE_MAC_MD5 0x10
380 # define SSL_HANDSHAKE_MAC_SHA 0x20
381 # define SSL_HANDSHAKE_MAC_GOST94 0x40
382 # define SSL_HANDSHAKE_MAC_SHA256 0x80
383 # define SSL_HANDSHAKE_MAC_SHA384 0x100
384 # define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA)
385 
386 /*
387  * When adding new digest in the ssl_ciph.c and increment SSM_MD_NUM_IDX make
388  * sure to update this constant too
389  */
390 # define SSL_MAX_DIGEST 6
391 
392 # define TLS1_PRF_DGST_MASK      (0xff << TLS1_PRF_DGST_SHIFT)
393 
394 # define TLS1_PRF_DGST_SHIFT 10
395 # define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT)
396 # define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT)
397 # define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT)
398 # define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT)
399 # define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT)
400 # define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1)
401 
402 /*
403  * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
404  * goes into algorithm2)
405  */
406 # define TLS1_STREAM_MAC 0x04
407 
408 /*
409  * Export and cipher strength information. For each cipher we have to decide
410  * whether it is exportable or not. This information is likely to change
411  * over time, since the export control rules are no static technical issue.
412  *
413  * Independent of the export flag the cipher strength is sorted into classes.
414  * SSL_EXP40 was denoting the 40bit US export limit of past times, which now
415  * is at 56bit (SSL_EXP56). If the exportable cipher class is going to change
416  * again (eg. to 64bit) the use of "SSL_EXP*" becomes blurred even more,
417  * since SSL_EXP64 could be similar to SSL_LOW.
418  * For this reason SSL_MICRO and SSL_MINI macros are included to widen the
419  * namespace of SSL_LOW-SSL_HIGH to lower values. As development of speed
420  * and ciphers goes, another extension to SSL_SUPER and/or SSL_ULTRA would
421  * be possible.
422  */
423 # define SSL_EXP_MASK            0x00000003L
424 # define SSL_STRONG_MASK         0x000001fcL
425 
426 # define SSL_NOT_EXP             0x00000001L
427 # define SSL_EXPORT              0x00000002L
428 
429 # define SSL_STRONG_NONE         0x00000004L
430 # define SSL_EXP40               0x00000008L
431 # define SSL_MICRO               (SSL_EXP40)
432 # define SSL_EXP56               0x00000010L
433 # define SSL_MINI                (SSL_EXP56)
434 # define SSL_LOW                 0x00000020L
435 # define SSL_MEDIUM              0x00000040L
436 # define SSL_HIGH                0x00000080L
437 # define SSL_FIPS                0x00000100L
438 
439 /* we have used 000001ff - 23 bits left to go */
440 
441 /*-
442  * Macros to check the export status and cipher strength for export ciphers.
443  * Even though the macros for EXPORT and EXPORT40/56 have similar names,
444  * their meaning is different:
445  * *_EXPORT macros check the 'exportable' status.
446  * *_EXPORT40/56 macros are used to check whether a certain cipher strength
447  *          is given.
448  * Since the SSL_IS_EXPORT* and SSL_EXPORT* macros depend on the correct
449  * algorithm structure element to be passed (algorithms, algo_strength) and no
450  * typechecking can be done as they are all of type unsigned long, their
451  * direct usage is discouraged.
452  * Use the SSL_C_* macros instead.
453  */
454 # define SSL_IS_EXPORT(a)        ((a)&SSL_EXPORT)
455 # define SSL_IS_EXPORT56(a)      ((a)&SSL_EXP56)
456 # define SSL_IS_EXPORT40(a)      ((a)&SSL_EXP40)
457 # define SSL_C_IS_EXPORT(c)      SSL_IS_EXPORT((c)->algo_strength)
458 # define SSL_C_IS_EXPORT56(c)    SSL_IS_EXPORT56((c)->algo_strength)
459 # define SSL_C_IS_EXPORT40(c)    SSL_IS_EXPORT40((c)->algo_strength)
460 
461 # define SSL_EXPORT_KEYLENGTH(a,s)       (SSL_IS_EXPORT40(s) ? 5 : \
462                                  (a) == SSL_DES ? 8 : 7)
463 # define SSL_EXPORT_PKEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 512 : 1024)
464 # define SSL_C_EXPORT_KEYLENGTH(c)       SSL_EXPORT_KEYLENGTH((c)->algorithm_enc, \
465                                 (c)->algo_strength)
466 # define SSL_C_EXPORT_PKEYLENGTH(c)      SSL_EXPORT_PKEYLENGTH((c)->algo_strength)
467 
468 /* Mostly for SSLv3 */
469 # define SSL_PKEY_RSA_ENC        0
470 # define SSL_PKEY_RSA_SIGN       1
471 # define SSL_PKEY_DSA_SIGN       2
472 # define SSL_PKEY_DH_RSA         3
473 # define SSL_PKEY_DH_DSA         4
474 # define SSL_PKEY_ECC            5
475 # define SSL_PKEY_GOST94         6
476 # define SSL_PKEY_GOST01         7
477 # define SSL_PKEY_NUM            8
478 
479 /*-
480  * SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
481  *          <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
482  * SSL_kDH  <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
483  * SSL_kEDH <- RSA_ENC | RSA_SIGN | DSA_SIGN
484  * SSL_aRSA <- RSA_ENC | RSA_SIGN
485  * SSL_aDSS <- DSA_SIGN
486  */
487 
488 /*-
489 #define CERT_INVALID            0
490 #define CERT_PUBLIC_KEY         1
491 #define CERT_PRIVATE_KEY        2
492 */
493 
494 # ifndef OPENSSL_NO_EC
495 /*
496  * From ECC-TLS draft, used in encoding the curve type in ECParameters
497  */
498 #  define EXPLICIT_PRIME_CURVE_TYPE  1
499 #  define EXPLICIT_CHAR2_CURVE_TYPE  2
500 #  define NAMED_CURVE_TYPE           3
501 # endif                         /* OPENSSL_NO_EC */
502 
503 typedef struct cert_pkey_st {
504     X509 *x509;
505     EVP_PKEY *privatekey;
506     /* Digest to use when signing */
507     const EVP_MD *digest;
508 } CERT_PKEY;
509 
510 typedef struct cert_st {
511     /* Current active set */
512     /*
513      * ALWAYS points to an element of the pkeys array
514      * Probably it would make more sense to store
515      * an index, not a pointer.
516      */
517     CERT_PKEY *key;
518     /*
519      * The following masks are for the key and auth algorithms that are
520      * supported by the certs below
521      */
522     int valid;
523     unsigned long mask_k;
524     unsigned long mask_a;
525     unsigned long export_mask_k;
526     unsigned long export_mask_a;
527 # ifndef OPENSSL_NO_RSA
528     RSA *rsa_tmp;
529     RSA *(*rsa_tmp_cb) (SSL *ssl, int is_export, int keysize);
530 # endif
531 # ifndef OPENSSL_NO_DH
532     DH *dh_tmp;
533     DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
534 # endif
535 # ifndef OPENSSL_NO_ECDH
536     EC_KEY *ecdh_tmp;
537     /* Callback for generating ephemeral ECDH keys */
538     EC_KEY *(*ecdh_tmp_cb) (SSL *ssl, int is_export, int keysize);
539 # endif
540     CERT_PKEY pkeys[SSL_PKEY_NUM];
541     int references;             /* >1 only if SSL_copy_session_id is used */
542 } CERT;
543 
544 typedef struct sess_cert_st {
545     STACK_OF(X509) *cert_chain; /* as received from peer (not for SSL2) */
546     /* The 'peer_...' members are used only by clients. */
547     int peer_cert_type;
548     CERT_PKEY *peer_key;        /* points to an element of peer_pkeys (never
549                                  * NULL!) */
550     CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
551     /*
552      * Obviously we don't have the private keys of these, so maybe we
553      * shouldn't even use the CERT_PKEY type here.
554      */
555 # ifndef OPENSSL_NO_RSA
556     RSA *peer_rsa_tmp;          /* not used for SSL 2 */
557 # endif
558 # ifndef OPENSSL_NO_DH
559     DH *peer_dh_tmp;            /* not used for SSL 2 */
560 # endif
561 # ifndef OPENSSL_NO_ECDH
562     EC_KEY *peer_ecdh_tmp;
563 # endif
564     int references;             /* actually always 1 at the moment */
565 } SESS_CERT;
566 
567 /*
568  * #define MAC_DEBUG
569  */
570 
571 /*
572  * #define ERR_DEBUG
573  */
574 /*
575  * #define ABORT_DEBUG
576  */
577 /*
578  * #define PKT_DEBUG 1
579  */
580 /*
581  * #define DES_DEBUG
582  */
583 /*
584  * #define DES_OFB_DEBUG
585  */
586 /*
587  * #define SSL_DEBUG
588  */
589 /*
590  * #define RSA_DEBUG
591  */
592 /*
593  * #define IDEA_DEBUG
594  */
595 
596 # define FP_ICC  (int (*)(const void *,const void *))
597 # define ssl_put_cipher_by_char(ssl,ciph,ptr) \
598                 ((ssl)->method->put_cipher_by_char((ciph),(ptr)))
599 # define ssl_get_cipher_by_char(ssl,ptr) \
600                 ((ssl)->method->get_cipher_by_char(ptr))
601 
602 /*
603  * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
604  * of a mess of functions, but hell, think of it as an opaque structure :-)
605  */
606 typedef struct ssl3_enc_method {
607     int (*enc) (SSL *, int);
608     int (*mac) (SSL *, unsigned char *, int);
609     int (*setup_key_block) (SSL *);
610     int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
611                                    int);
612     int (*change_cipher_state) (SSL *, int);
613     int (*final_finish_mac) (SSL *, const char *, int, unsigned char *);
614     int finish_mac_length;
615     int (*cert_verify_mac) (SSL *, int, unsigned char *);
616     const char *client_finished_label;
617     int client_finished_label_len;
618     const char *server_finished_label;
619     int server_finished_label_len;
620     int (*alert_value) (int);
621     int (*export_keying_material) (SSL *, unsigned char *, size_t,
622                                    const char *, size_t,
623                                    const unsigned char *, size_t,
624                                    int use_context);
625 } SSL3_ENC_METHOD;
626 
627 # ifndef OPENSSL_NO_COMP
628 /* Used for holding the relevant compression methods loaded into SSL_CTX */
629 typedef struct ssl3_comp_st {
630     int comp_id;                /* The identifier byte for this compression
631                                  * type */
632     char *name;                 /* Text name used for the compression type */
633     COMP_METHOD *method;        /* The method :-) */
634 } SSL3_COMP;
635 # endif
636 
637 # ifndef OPENSSL_NO_BUF_FREELISTS
638 typedef struct ssl3_buf_freelist_st {
639     size_t chunklen;
640     unsigned int len;
641     struct ssl3_buf_freelist_entry_st *head;
642 } SSL3_BUF_FREELIST;
643 
644 typedef struct ssl3_buf_freelist_entry_st {
645     struct ssl3_buf_freelist_entry_st *next;
646 } SSL3_BUF_FREELIST_ENTRY;
647 # endif
648 
649 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
650 OPENSSL_EXTERN const SSL_CIPHER ssl2_ciphers[];
651 OPENSSL_EXTERN SSL_CIPHER ssl3_ciphers[];
652 
653 SSL_METHOD *ssl_bad_method(int ver);
654 
655 extern SSL3_ENC_METHOD TLSv1_enc_data;
656 extern SSL3_ENC_METHOD SSLv3_enc_data;
657 extern SSL3_ENC_METHOD DTLSv1_enc_data;
658 
659 # define SSL_IS_DTLS(s) (s->method->version == DTLS1_VERSION)
660 
661 # define IMPLEMENT_tls_meth_func(version, func_name, s_accept, s_connect, \
662                                 s_get_meth) \
663 const SSL_METHOD *func_name(void)  \
664         { \
665         static const SSL_METHOD func_name##_data= { \
666                 version, \
667                 tls1_new, \
668                 tls1_clear, \
669                 tls1_free, \
670                 s_accept, \
671                 s_connect, \
672                 ssl3_read, \
673                 ssl3_peek, \
674                 ssl3_write, \
675                 ssl3_shutdown, \
676                 ssl3_renegotiate, \
677                 ssl3_renegotiate_check, \
678                 ssl3_get_message, \
679                 ssl3_read_bytes, \
680                 ssl3_write_bytes, \
681                 ssl3_dispatch_alert, \
682                 ssl3_ctrl, \
683                 ssl3_ctx_ctrl, \
684                 ssl3_get_cipher_by_char, \
685                 ssl3_put_cipher_by_char, \
686                 ssl3_pending, \
687                 ssl3_num_ciphers, \
688                 ssl3_get_cipher, \
689                 s_get_meth, \
690                 tls1_default_timeout, \
691                 &TLSv1_enc_data, \
692                 ssl_undefined_void_function, \
693                 ssl3_callback_ctrl, \
694                 ssl3_ctx_callback_ctrl, \
695         }; \
696         return &func_name##_data; \
697         }
698 
699 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
700 const SSL_METHOD *func_name(void)  \
701         { \
702         static const SSL_METHOD func_name##_data= { \
703                 SSL3_VERSION, \
704                 ssl3_new, \
705                 ssl3_clear, \
706                 ssl3_free, \
707                 s_accept, \
708                 s_connect, \
709                 ssl3_read, \
710                 ssl3_peek, \
711                 ssl3_write, \
712                 ssl3_shutdown, \
713                 ssl3_renegotiate, \
714                 ssl3_renegotiate_check, \
715                 ssl3_get_message, \
716                 ssl3_read_bytes, \
717                 ssl3_write_bytes, \
718                 ssl3_dispatch_alert, \
719                 ssl3_ctrl, \
720                 ssl3_ctx_ctrl, \
721                 ssl3_get_cipher_by_char, \
722                 ssl3_put_cipher_by_char, \
723                 ssl3_pending, \
724                 ssl3_num_ciphers, \
725                 ssl3_get_cipher, \
726                 s_get_meth, \
727                 ssl3_default_timeout, \
728                 &SSLv3_enc_data, \
729                 ssl_undefined_void_function, \
730                 ssl3_callback_ctrl, \
731                 ssl3_ctx_callback_ctrl, \
732         }; \
733         return &func_name##_data; \
734         }
735 
736 # define IMPLEMENT_ssl23_meth_func(func_name, s_accept, s_connect, s_get_meth) \
737 const SSL_METHOD *func_name(void)  \
738         { \
739         static const SSL_METHOD func_name##_data= { \
740         TLS1_2_VERSION, \
741         tls1_new, \
742         tls1_clear, \
743         tls1_free, \
744         s_accept, \
745         s_connect, \
746         ssl23_read, \
747         ssl23_peek, \
748         ssl23_write, \
749         ssl_undefined_function, \
750         ssl_undefined_function, \
751         ssl_ok, \
752         ssl3_get_message, \
753         ssl3_read_bytes, \
754         ssl3_write_bytes, \
755         ssl3_dispatch_alert, \
756         ssl3_ctrl, \
757         ssl3_ctx_ctrl, \
758         ssl23_get_cipher_by_char, \
759         ssl23_put_cipher_by_char, \
760         ssl_undefined_const_function, \
761         ssl23_num_ciphers, \
762         ssl23_get_cipher, \
763         s_get_meth, \
764         ssl23_default_timeout, \
765         &ssl3_undef_enc_method, \
766         ssl_undefined_void_function, \
767         ssl3_callback_ctrl, \
768         ssl3_ctx_callback_ctrl, \
769         }; \
770         return &func_name##_data; \
771         }
772 
773 # define IMPLEMENT_ssl2_meth_func(func_name, s_accept, s_connect, s_get_meth) \
774 const SSL_METHOD *func_name(void)  \
775         { \
776         static const SSL_METHOD func_name##_data= { \
777                 SSL2_VERSION, \
778                 ssl2_new,       /* local */ \
779                 ssl2_clear,     /* local */ \
780                 ssl2_free,      /* local */ \
781                 s_accept, \
782                 s_connect, \
783                 ssl2_read, \
784                 ssl2_peek, \
785                 ssl2_write, \
786                 ssl2_shutdown, \
787                 ssl_ok, /* NULL - renegotiate */ \
788                 ssl_ok, /* NULL - check renegotiate */ \
789                 NULL, /* NULL - ssl_get_message */ \
790                 NULL, /* NULL - ssl_get_record */ \
791                 NULL, /* NULL - ssl_write_bytes */ \
792                 NULL, /* NULL - dispatch_alert */ \
793                 ssl2_ctrl,      /* local */ \
794                 ssl2_ctx_ctrl,  /* local */ \
795                 ssl2_get_cipher_by_char, \
796                 ssl2_put_cipher_by_char, \
797                 ssl2_pending, \
798                 ssl2_num_ciphers, \
799                 ssl2_get_cipher, \
800                 s_get_meth, \
801                 ssl2_default_timeout, \
802                 &ssl3_undef_enc_method, \
803                 ssl_undefined_void_function, \
804                 ssl2_callback_ctrl,     /* local */ \
805                 ssl2_ctx_callback_ctrl, /* local */ \
806         }; \
807         return &func_name##_data; \
808         }
809 
810 # define IMPLEMENT_dtls1_meth_func(func_name, s_accept, s_connect, s_get_meth) \
811 const SSL_METHOD *func_name(void)  \
812         { \
813         static const SSL_METHOD func_name##_data= { \
814                 DTLS1_VERSION, \
815                 dtls1_new, \
816                 dtls1_clear, \
817                 dtls1_free, \
818                 s_accept, \
819                 s_connect, \
820                 ssl3_read, \
821                 ssl3_peek, \
822                 ssl3_write, \
823                 dtls1_shutdown, \
824                 ssl3_renegotiate, \
825                 ssl3_renegotiate_check, \
826                 dtls1_get_message, \
827                 dtls1_read_bytes, \
828                 dtls1_write_app_data_bytes, \
829                 dtls1_dispatch_alert, \
830                 dtls1_ctrl, \
831                 ssl3_ctx_ctrl, \
832                 ssl3_get_cipher_by_char, \
833                 ssl3_put_cipher_by_char, \
834                 ssl3_pending, \
835                 ssl3_num_ciphers, \
836                 dtls1_get_cipher, \
837                 s_get_meth, \
838                 dtls1_default_timeout, \
839                 &DTLSv1_enc_data, \
840                 ssl_undefined_void_function, \
841                 ssl3_callback_ctrl, \
842                 ssl3_ctx_callback_ctrl, \
843         }; \
844         return &func_name##_data; \
845         }
846 
847 struct openssl_ssl_test_functions {
848     int (*p_ssl_init_wbio_buffer) (SSL *s, int push);
849     int (*p_ssl3_setup_buffers) (SSL *s);
850     int (*p_tls1_process_heartbeat) (SSL *s);
851     int (*p_dtls1_process_heartbeat) (SSL *s);
852 };
853 
854 # ifndef OPENSSL_UNIT_TEST
855 
856 void ssl_clear_cipher_ctx(SSL *s);
857 int ssl_clear_bad_session(SSL *s);
858 CERT *ssl_cert_new(void);
859 CERT *ssl_cert_dup(CERT *cert);
860 int ssl_cert_inst(CERT **o);
861 void ssl_cert_free(CERT *c);
862 SESS_CERT *ssl_sess_cert_new(void);
863 void ssl_sess_cert_free(SESS_CERT *sc);
864 int ssl_set_peer_cert_type(SESS_CERT *c, int type);
865 int ssl_get_new_session(SSL *s, int session);
866 int ssl_get_prev_session(SSL *s, unsigned char *session, int len,
867                          const unsigned char *limit);
868 SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket);
869 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
870 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
871 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
872                           const SSL_CIPHER *const *bp);
873 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
874                                                int num,
875                                                STACK_OF(SSL_CIPHER) **skp);
876 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
877                              unsigned char *p,
878                              int (*put_cb) (const SSL_CIPHER *,
879                                             unsigned char *));
880 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
881                                              STACK_OF(SSL_CIPHER) **pref,
882                                              STACK_OF(SSL_CIPHER) **sorted,
883                                              const char *rule_str);
884 void ssl_update_cache(SSL *s, int mode);
885 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
886                        const EVP_MD **md, int *mac_pkey_type,
887                        int *mac_secret_size, SSL_COMP **comp);
888 int ssl_get_handshake_digest(int i, long *mask, const EVP_MD **md);
889 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
890 int ssl_undefined_function(SSL *s);
891 int ssl_undefined_void_function(void);
892 int ssl_undefined_const_function(const SSL *s);
893 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s);
894 X509 *ssl_get_server_send_cert(const SSL *);
895 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd);
896 int ssl_cert_type(X509 *x, EVP_PKEY *pkey);
897 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher);
898 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
899 int ssl_verify_alarm_type(long type);
900 void ssl_load_ciphers(void);
901 int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, int len);
902 
903 int ssl2_enc_init(SSL *s, int client);
904 int ssl2_generate_key_material(SSL *s);
905 int ssl2_enc(SSL *s, int send_data);
906 void ssl2_mac(SSL *s, unsigned char *mac, int send_data);
907 const SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p);
908 int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
909 int ssl2_part_read(SSL *s, unsigned long f, int i);
910 int ssl2_do_write(SSL *s);
911 int ssl2_set_certificate(SSL *s, int type, int len,
912                          const unsigned char *data);
913 void ssl2_return_error(SSL *s, int reason);
914 void ssl2_write_error(SSL *s);
915 int ssl2_num_ciphers(void);
916 const SSL_CIPHER *ssl2_get_cipher(unsigned int u);
917 int ssl2_new(SSL *s);
918 void ssl2_free(SSL *s);
919 int ssl2_accept(SSL *s);
920 int ssl2_connect(SSL *s);
921 int ssl2_read(SSL *s, void *buf, int len);
922 int ssl2_peek(SSL *s, void *buf, int len);
923 int ssl2_write(SSL *s, const void *buf, int len);
924 int ssl2_shutdown(SSL *s);
925 void ssl2_clear(SSL *s);
926 long ssl2_ctrl(SSL *s, int cmd, long larg, void *parg);
927 long ssl2_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
928 long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
929 long ssl2_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
930 int ssl2_pending(const SSL *s);
931 long ssl2_default_timeout(void);
932 
933 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
934 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
935 void ssl3_init_finished_mac(SSL *s);
936 int ssl3_send_server_certificate(SSL *s);
937 int ssl3_send_newsession_ticket(SSL *s);
938 int ssl3_send_cert_status(SSL *s);
939 int ssl3_get_finished(SSL *s, int state_a, int state_b);
940 int ssl3_setup_key_block(SSL *s);
941 int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b);
942 int ssl3_change_cipher_state(SSL *s, int which);
943 void ssl3_cleanup_key_block(SSL *s);
944 int ssl3_do_write(SSL *s, int type);
945 int ssl3_send_alert(SSL *s, int level, int desc);
946 int ssl3_generate_master_secret(SSL *s, unsigned char *out,
947                                 unsigned char *p, int len);
948 int ssl3_get_req_cert_type(SSL *s, unsigned char *p);
949 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
950 int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen);
951 int ssl3_num_ciphers(void);
952 const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
953 int ssl3_renegotiate(SSL *ssl);
954 int ssl3_renegotiate_check(SSL *ssl);
955 int ssl3_dispatch_alert(SSL *s);
956 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
957 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
958 int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,
959                           unsigned char *p);
960 int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
961 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
962 int ssl3_enc(SSL *s, int send_data);
963 int n_ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
964 void ssl3_free_digest_list(SSL *s);
965 unsigned long ssl3_output_cert_chain(SSL *s, X509 *x);
966 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt,
967                                STACK_OF(SSL_CIPHER) *srvr);
968 int ssl3_setup_buffers(SSL *s);
969 int ssl3_setup_read_buffer(SSL *s);
970 int ssl3_setup_write_buffer(SSL *s);
971 int ssl3_release_read_buffer(SSL *s);
972 int ssl3_release_write_buffer(SSL *s);
973 int ssl3_digest_cached_records(SSL *s);
974 int ssl3_new(SSL *s);
975 void ssl3_free(SSL *s);
976 int ssl3_accept(SSL *s);
977 int ssl3_connect(SSL *s);
978 int ssl3_read(SSL *s, void *buf, int len);
979 int ssl3_peek(SSL *s, void *buf, int len);
980 int ssl3_write(SSL *s, const void *buf, int len);
981 int ssl3_shutdown(SSL *s);
982 void ssl3_clear(SSL *s);
983 long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
984 long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
985 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
986 long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
987 int ssl3_pending(const SSL *s);
988 
989 void ssl3_record_sequence_update(unsigned char *seq);
990 int ssl3_do_change_cipher_spec(SSL *ssl);
991 long ssl3_default_timeout(void);
992 
993 int ssl23_num_ciphers(void);
994 const SSL_CIPHER *ssl23_get_cipher(unsigned int u);
995 int ssl23_read(SSL *s, void *buf, int len);
996 int ssl23_peek(SSL *s, void *buf, int len);
997 int ssl23_write(SSL *s, const void *buf, int len);
998 int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
999 const SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p);
1000 long ssl23_default_timeout(void);
1001 
1002 long tls1_default_timeout(void);
1003 int dtls1_do_write(SSL *s, int type);
1004 int ssl3_read_n(SSL *s, int n, int max, int extend);
1005 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
1006 int ssl3_do_compress(SSL *ssl);
1007 int ssl3_do_uncompress(SSL *ssl);
1008 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
1009                        unsigned int len);
1010 unsigned char *dtls1_set_message_header(SSL *s,
1011                                         unsigned char *p, unsigned char mt,
1012                                         unsigned long len,
1013                                         unsigned long frag_off,
1014                                         unsigned long frag_len);
1015 
1016 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
1017 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len);
1018 
1019 int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
1020 int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen);
1021 unsigned long dtls1_output_cert_chain(SSL *s, X509 *x);
1022 int dtls1_read_failed(SSL *s, int code);
1023 int dtls1_buffer_message(SSL *s, int ccs);
1024 int dtls1_retransmit_message(SSL *s, unsigned short seq,
1025                              unsigned long frag_off, int *found);
1026 int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
1027 int dtls1_retransmit_buffered_messages(SSL *s);
1028 void dtls1_clear_record_buffer(SSL *s);
1029 void dtls1_get_message_header(unsigned char *data,
1030                               struct hm_header_st *msg_hdr);
1031 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
1032 void dtls1_reset_seq_numbers(SSL *s, int rw);
1033 long dtls1_default_timeout(void);
1034 struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
1035 int dtls1_check_timeout_num(SSL *s);
1036 int dtls1_handle_timeout(SSL *s);
1037 const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
1038 void dtls1_start_timer(SSL *s);
1039 void dtls1_stop_timer(SSL *s);
1040 int dtls1_is_timer_expired(SSL *s);
1041 void dtls1_double_timeout(SSL *s);
1042 int dtls1_send_newsession_ticket(SSL *s);
1043 unsigned int dtls1_min_mtu(SSL *s);
1044 unsigned int dtls1_link_min_mtu(void);
1045 void dtls1_hm_fragment_free(hm_fragment *frag);
1046 
1047 /* some client-only functions */
1048 int ssl3_client_hello(SSL *s);
1049 int ssl3_get_server_hello(SSL *s);
1050 int ssl3_get_certificate_request(SSL *s);
1051 int ssl3_get_new_session_ticket(SSL *s);
1052 int ssl3_get_cert_status(SSL *s);
1053 int ssl3_get_server_done(SSL *s);
1054 int ssl3_send_client_verify(SSL *s);
1055 int ssl3_send_client_certificate(SSL *s);
1056 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
1057 int ssl3_send_client_key_exchange(SSL *s);
1058 int ssl3_get_key_exchange(SSL *s);
1059 int ssl3_get_server_certificate(SSL *s);
1060 int ssl3_check_cert_and_algorithm(SSL *s);
1061 #  ifndef OPENSSL_NO_TLSEXT
1062 #   ifndef OPENSSL_NO_NEXTPROTONEG
1063 int ssl3_send_next_proto(SSL *s);
1064 #   endif
1065 #  endif
1066 
1067 int dtls1_client_hello(SSL *s);
1068 int dtls1_send_client_certificate(SSL *s);
1069 int dtls1_send_client_key_exchange(SSL *s);
1070 int dtls1_send_client_verify(SSL *s);
1071 
1072 /* some server-only functions */
1073 int ssl3_get_client_hello(SSL *s);
1074 int ssl3_send_server_hello(SSL *s);
1075 int ssl3_send_hello_request(SSL *s);
1076 int ssl3_send_server_key_exchange(SSL *s);
1077 int ssl3_send_certificate_request(SSL *s);
1078 int ssl3_send_server_done(SSL *s);
1079 int ssl3_check_client_hello(SSL *s);
1080 int ssl3_get_client_certificate(SSL *s);
1081 int ssl3_get_client_key_exchange(SSL *s);
1082 int ssl3_get_cert_verify(SSL *s);
1083 #  ifndef OPENSSL_NO_NEXTPROTONEG
1084 int ssl3_get_next_proto(SSL *s);
1085 #  endif
1086 
1087 int dtls1_send_hello_request(SSL *s);
1088 int dtls1_send_server_hello(SSL *s);
1089 int dtls1_send_server_certificate(SSL *s);
1090 int dtls1_send_server_key_exchange(SSL *s);
1091 int dtls1_send_certificate_request(SSL *s);
1092 int dtls1_send_server_done(SSL *s);
1093 
1094 int ssl23_accept(SSL *s);
1095 int ssl23_connect(SSL *s);
1096 int ssl23_read_bytes(SSL *s, int n);
1097 int ssl23_write_bytes(SSL *s);
1098 
1099 int tls1_new(SSL *s);
1100 void tls1_free(SSL *s);
1101 void tls1_clear(SSL *s);
1102 long tls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1103 long tls1_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
1104 
1105 int dtls1_new(SSL *s);
1106 int dtls1_accept(SSL *s);
1107 int dtls1_connect(SSL *s);
1108 void dtls1_free(SSL *s);
1109 void dtls1_clear(SSL *s);
1110 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1111 int dtls1_shutdown(SSL *s);
1112 
1113 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
1114 int dtls1_get_record(SSL *s);
1115 int do_dtls1_write(SSL *s, int type, const unsigned char *buf,
1116                    unsigned int len, int create_empty_fragement);
1117 int dtls1_dispatch_alert(SSL *s);
1118 int dtls1_enc(SSL *s, int snd);
1119 
1120 int ssl_init_wbio_buffer(SSL *s, int push);
1121 void ssl_free_wbio_buffer(SSL *s);
1122 
1123 int tls1_change_cipher_state(SSL *s, int which);
1124 int tls1_setup_key_block(SSL *s);
1125 int tls1_enc(SSL *s, int snd);
1126 int tls1_final_finish_mac(SSL *s,
1127                           const char *str, int slen, unsigned char *p);
1128 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
1129 int tls1_mac(SSL *ssl, unsigned char *md, int snd);
1130 int tls1_generate_master_secret(SSL *s, unsigned char *out,
1131                                 unsigned char *p, int len);
1132 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1133                                 const char *label, size_t llen,
1134                                 const unsigned char *p, size_t plen,
1135                                 int use_context);
1136 int tls1_alert_code(int code);
1137 int ssl3_alert_code(int code);
1138 int ssl_ok(SSL *s);
1139 
1140 #  ifndef OPENSSL_NO_ECDH
1141 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
1142 #  endif
1143 
1144 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
1145 
1146 #  ifndef OPENSSL_NO_EC
1147 int tls1_ec_curve_id2nid(int curve_id);
1148 int tls1_ec_nid2curve_id(int nid);
1149 #  endif                        /* OPENSSL_NO_EC */
1150 
1151 #  ifndef OPENSSL_NO_TLSEXT
1152 unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *buf,
1153                                           unsigned char *limit);
1154 unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *buf,
1155                                           unsigned char *limit);
1156 int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **data,
1157                                  unsigned char *d, int n, int *al);
1158 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data,
1159                                  unsigned char *d, int n, int *al);
1160 int ssl_prepare_clienthello_tlsext(SSL *s);
1161 int ssl_prepare_serverhello_tlsext(SSL *s);
1162 int ssl_check_clienthello_tlsext_early(SSL *s);
1163 int ssl_check_clienthello_tlsext_late(SSL *s);
1164 int ssl_check_serverhello_tlsext(SSL *s);
1165 
1166 #   ifndef OPENSSL_NO_HEARTBEATS
1167 int tls1_heartbeat(SSL *s);
1168 int dtls1_heartbeat(SSL *s);
1169 int tls1_process_heartbeat(SSL *s);
1170 int dtls1_process_heartbeat(SSL *s);
1171 #   endif
1172 
1173 #   ifdef OPENSSL_NO_SHA256
1174 #    define tlsext_tick_md  EVP_sha1
1175 #   else
1176 #    define tlsext_tick_md  EVP_sha256
1177 #   endif
1178 int tls1_process_ticket(SSL *s, unsigned char *session_id, int len,
1179                         const unsigned char *limit, SSL_SESSION **ret);
1180 
1181 int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
1182                          const EVP_MD *md);
1183 int tls12_get_sigid(const EVP_PKEY *pk);
1184 const EVP_MD *tls12_get_hash(unsigned char hash_alg);
1185 
1186 #  endif
1187 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
1188 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
1189 int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1190                                         int maxlen);
1191 int ssl_parse_serverhello_renegotiate_ext(SSL *s, unsigned char *d, int len,
1192                                           int *al);
1193 int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1194                                         int maxlen);
1195 int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len,
1196                                           int *al);
1197 long ssl_get_algorithm2(SSL *s);
1198 int tls1_process_sigalgs(SSL *s, const unsigned char *data, int dsize);
1199 int tls12_get_req_sig_algs(SSL *s, unsigned char *p);
1200 
1201 int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
1202                                      int maxlen);
1203 int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len,
1204                                        int *al);
1205 int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
1206                                      int maxlen);
1207 int ssl_parse_serverhello_use_srtp_ext(SSL *s, unsigned char *d, int len,
1208                                        int *al);
1209 
1210 /* s3_cbc.c */
1211 void ssl3_cbc_copy_mac(unsigned char *out,
1212                        const SSL3_RECORD *rec,
1213                        unsigned md_size, unsigned orig_len);
1214 int ssl3_cbc_remove_padding(const SSL *s,
1215                             SSL3_RECORD *rec,
1216                             unsigned block_size, unsigned mac_size);
1217 int tls1_cbc_remove_padding(const SSL *s,
1218                             SSL3_RECORD *rec,
1219                             unsigned block_size, unsigned mac_size);
1220 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
1221 void ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
1222                             unsigned char *md_out,
1223                             size_t *md_out_size,
1224                             const unsigned char header[13],
1225                             const unsigned char *data,
1226                             size_t data_plus_mac_size,
1227                             size_t data_plus_mac_plus_padding_size,
1228                             const unsigned char *mac_secret,
1229                             unsigned mac_secret_length, char is_sslv3);
1230 
1231 void tls_fips_digest_extra(const EVP_CIPHER_CTX *cipher_ctx,
1232                            EVP_MD_CTX *mac_ctx, const unsigned char *data,
1233                            size_t data_len, size_t orig_len);
1234 
1235 int srp_verify_server_param(SSL *s, int *al);
1236 
1237 # else
1238 
1239 #  define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
1240 #  define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
1241 #  define tls1_process_heartbeat SSL_test_functions()->p_tls1_process_heartbeat
1242 #  define dtls1_process_heartbeat SSL_test_functions()->p_dtls1_process_heartbeat
1243 
1244 # endif
1245 #endif
1246