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# define SSL_kDHr                0x00000002L
295/* DH cert, DSA CA cert */
296# define SSL_kDHd                0x00000004L
297/* tmp DH key no DH cert */
298# define SSL_kEDH                0x00000008L
299/* forward-compatible synonym */
300# define SSL_kDHE                SSL_kEDH
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/* forward-compatible synonym */
310# define SSL_kECDHE              SSL_kEECDH
311/* PSK */
312# define SSL_kPSK                0x00000100L
313/* GOST key exchange */
314# define SSL_kGOST       0x00000200L
315/* SRP */
316# define SSL_kSRP        0x00000400L
317
318/* Bits for algorithm_auth (server authentication) */
319/* RSA auth */
320# define SSL_aRSA                0x00000001L
321/* DSS auth */
322# define SSL_aDSS                0x00000002L
323/* no auth (i.e. use ADH or AECDH) */
324# define SSL_aNULL               0x00000004L
325/* Fixed DH auth (kDHd or kDHr) */
326# define SSL_aDH                 0x00000008L
327/* Fixed ECDH auth (kECDHe or kECDHr) */
328# define SSL_aECDH               0x00000010L
329/* KRB5 auth */
330# define SSL_aKRB5               0x00000020L
331/* ECDSA auth*/
332# define SSL_aECDSA              0x00000040L
333/* PSK auth */
334# define SSL_aPSK                0x00000080L
335/* GOST R 34.10-94 signature auth */
336# define SSL_aGOST94                             0x00000100L
337/* GOST R 34.10-2001 signature auth */
338# define SSL_aGOST01                     0x00000200L
339/* SRP auth */
340# define SSL_aSRP                0x00000400L
341
342/* Bits for algorithm_enc (symmetric encryption) */
343# define SSL_DES                 0x00000001L
344# define SSL_3DES                0x00000002L
345# define SSL_RC4                 0x00000004L
346# define SSL_RC2                 0x00000008L
347# define SSL_IDEA                0x00000010L
348# define SSL_eNULL               0x00000020L
349# define SSL_AES128              0x00000040L
350# define SSL_AES256              0x00000080L
351# define SSL_CAMELLIA128         0x00000100L
352# define SSL_CAMELLIA256         0x00000200L
353# define SSL_eGOST2814789CNT     0x00000400L
354# define SSL_SEED                0x00000800L
355# define SSL_AES128GCM           0x00001000L
356# define SSL_AES256GCM           0x00002000L
357
358# define SSL_AES                 (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM)
359# define SSL_CAMELLIA            (SSL_CAMELLIA128|SSL_CAMELLIA256)
360
361/* Bits for algorithm_mac (symmetric authentication) */
362
363# define SSL_MD5                 0x00000001L
364# define SSL_SHA1                0x00000002L
365# define SSL_GOST94      0x00000004L
366# define SSL_GOST89MAC   0x00000008L
367# define SSL_SHA256              0x00000010L
368# define SSL_SHA384              0x00000020L
369/* Not a real MAC, just an indication it is part of cipher */
370# define SSL_AEAD                0x00000040L
371
372/* Bits for algorithm_ssl (protocol version) */
373# define SSL_SSLV2               0x00000001UL
374# define SSL_SSLV3               0x00000002UL
375# define SSL_TLSV1               SSL_SSLV3/* for now */
376# define SSL_TLSV1_2             0x00000004UL
377
378/* Bits for algorithm2 (handshake digests and other extra flags) */
379
380# define SSL_HANDSHAKE_MAC_MD5 0x10
381# define SSL_HANDSHAKE_MAC_SHA 0x20
382# define SSL_HANDSHAKE_MAC_GOST94 0x40
383# define SSL_HANDSHAKE_MAC_SHA256 0x80
384# define SSL_HANDSHAKE_MAC_SHA384 0x100
385# define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA)
386
387/*
388 * When adding new digest in the ssl_ciph.c and increment SSM_MD_NUM_IDX make
389 * sure to update this constant too
390 */
391# define SSL_MAX_DIGEST 6
392
393# define TLS1_PRF_DGST_MASK      (0xff << TLS1_PRF_DGST_SHIFT)
394
395# define TLS1_PRF_DGST_SHIFT 10
396# define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT)
397# define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT)
398# define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT)
399# define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT)
400# define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT)
401# define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1)
402
403/*
404 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
405 * goes into algorithm2)
406 */
407# define TLS1_STREAM_MAC 0x04
408
409/*
410 * Export and cipher strength information. For each cipher we have to decide
411 * whether it is exportable or not. This information is likely to change
412 * over time, since the export control rules are no static technical issue.
413 *
414 * Independent of the export flag the cipher strength is sorted into classes.
415 * SSL_EXP40 was denoting the 40bit US export limit of past times, which now
416 * is at 56bit (SSL_EXP56). If the exportable cipher class is going to change
417 * again (eg. to 64bit) the use of "SSL_EXP*" becomes blurred even more,
418 * since SSL_EXP64 could be similar to SSL_LOW.
419 * For this reason SSL_MICRO and SSL_MINI macros are included to widen the
420 * namespace of SSL_LOW-SSL_HIGH to lower values. As development of speed
421 * and ciphers goes, another extension to SSL_SUPER and/or SSL_ULTRA would
422 * be possible.
423 */
424# define SSL_EXP_MASK            0x00000003L
425# define SSL_STRONG_MASK         0x000001fcL
426
427# define SSL_NOT_EXP             0x00000001L
428# define SSL_EXPORT              0x00000002L
429
430# define SSL_STRONG_NONE         0x00000004L
431# define SSL_EXP40               0x00000008L
432# define SSL_MICRO               (SSL_EXP40)
433# define SSL_EXP56               0x00000010L
434# define SSL_MINI                (SSL_EXP56)
435# define SSL_LOW                 0x00000020L
436# define SSL_MEDIUM              0x00000040L
437# define SSL_HIGH                0x00000080L
438# define SSL_FIPS                0x00000100L
439# define SSL_NOT_DEFAULT         0x00000200L
440
441/* we have used 000003ff - 22 bits left to go */
442
443/*-
444 * Macros to check the export status and cipher strength for export ciphers.
445 * Even though the macros for EXPORT and EXPORT40/56 have similar names,
446 * their meaning is different:
447 * *_EXPORT macros check the 'exportable' status.
448 * *_EXPORT40/56 macros are used to check whether a certain cipher strength
449 *          is given.
450 * Since the SSL_IS_EXPORT* and SSL_EXPORT* macros depend on the correct
451 * algorithm structure element to be passed (algorithms, algo_strength) and no
452 * typechecking can be done as they are all of type unsigned long, their
453 * direct usage is discouraged.
454 * Use the SSL_C_* macros instead.
455 */
456# define SSL_IS_EXPORT(a)        ((a)&SSL_EXPORT)
457# define SSL_IS_EXPORT56(a)      ((a)&SSL_EXP56)
458# define SSL_IS_EXPORT40(a)      ((a)&SSL_EXP40)
459# define SSL_C_IS_EXPORT(c)      SSL_IS_EXPORT((c)->algo_strength)
460# define SSL_C_IS_EXPORT56(c)    SSL_IS_EXPORT56((c)->algo_strength)
461# define SSL_C_IS_EXPORT40(c)    SSL_IS_EXPORT40((c)->algo_strength)
462
463# define SSL_EXPORT_KEYLENGTH(a,s)       (SSL_IS_EXPORT40(s) ? 5 : \
464                                 (a) == SSL_DES ? 8 : 7)
465# define SSL_EXPORT_PKEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 512 : 1024)
466# define SSL_C_EXPORT_KEYLENGTH(c)       SSL_EXPORT_KEYLENGTH((c)->algorithm_enc, \
467                                (c)->algo_strength)
468# define SSL_C_EXPORT_PKEYLENGTH(c)      SSL_EXPORT_PKEYLENGTH((c)->algo_strength)
469
470/* Check if an SSL structure is using DTLS */
471# define SSL_IS_DTLS(s)  (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
472/* See if we need explicit IV */
473# define SSL_USE_EXPLICIT_IV(s)  \
474                (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
475/*
476 * See if we use signature algorithms extension and signature algorithm
477 * before signatures.
478 */
479# define SSL_USE_SIGALGS(s)      \
480                        (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
481/*
482 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
483 * apply to others in future.
484 */
485# define SSL_USE_TLS1_2_CIPHERS(s)       \
486                (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
487/*
488 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
489 * flags because it may not be set to correct version yet.
490 */
491# define SSL_CLIENT_USE_TLS1_2_CIPHERS(s)        \
492                ((SSL_IS_DTLS(s) && s->client_version <= DTLS1_2_VERSION) || \
493                (!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION))
494
495/* Mostly for SSLv3 */
496# define SSL_PKEY_RSA_ENC        0
497# define SSL_PKEY_RSA_SIGN       1
498# define SSL_PKEY_DSA_SIGN       2
499# define SSL_PKEY_DH_RSA         3
500# define SSL_PKEY_DH_DSA         4
501# define SSL_PKEY_ECC            5
502# define SSL_PKEY_GOST94         6
503# define SSL_PKEY_GOST01         7
504# define SSL_PKEY_NUM            8
505
506/*-
507 * SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
508 *          <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
509 * SSL_kDH  <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
510 * SSL_kEDH <- RSA_ENC | RSA_SIGN | DSA_SIGN
511 * SSL_aRSA <- RSA_ENC | RSA_SIGN
512 * SSL_aDSS <- DSA_SIGN
513 */
514
515/*-
516#define CERT_INVALID            0
517#define CERT_PUBLIC_KEY         1
518#define CERT_PRIVATE_KEY        2
519*/
520
521# ifndef OPENSSL_NO_EC
522/*
523 * From ECC-TLS draft, used in encoding the curve type in ECParameters
524 */
525#  define EXPLICIT_PRIME_CURVE_TYPE  1
526#  define EXPLICIT_CHAR2_CURVE_TYPE  2
527#  define NAMED_CURVE_TYPE           3
528# endif                         /* OPENSSL_NO_EC */
529
530typedef struct cert_pkey_st {
531    X509 *x509;
532    EVP_PKEY *privatekey;
533    /* Digest to use when signing */
534    const EVP_MD *digest;
535    /* Chain for this certificate */
536    STACK_OF(X509) *chain;
537# ifndef OPENSSL_NO_TLSEXT
538    /*-
539     * serverinfo data for this certificate.  The data is in TLS Extension
540     * wire format, specifically it's a series of records like:
541     *   uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
542     *   uint16_t length;
543     *   uint8_t data[length];
544     */
545    unsigned char *serverinfo;
546    size_t serverinfo_length;
547# endif
548    /*
549     * Set if CERT_PKEY can be used with current SSL session: e.g.
550     * appropriate curve, signature algorithms etc. If zero it can't be used
551     * at all.
552     */
553    int valid_flags;
554} CERT_PKEY;
555/* Retrieve Suite B flags */
556# define tls1_suiteb(s)  (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
557/* Uses to check strict mode: suite B modes are always strict */
558# define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
559        (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
560
561typedef struct {
562    unsigned short ext_type;
563    /*
564     * Per-connection flags relating to this extension type: not used if
565     * part of an SSL_CTX structure.
566     */
567    unsigned short ext_flags;
568    custom_ext_add_cb add_cb;
569    custom_ext_free_cb free_cb;
570    void *add_arg;
571    custom_ext_parse_cb parse_cb;
572    void *parse_arg;
573} custom_ext_method;
574
575/* ext_flags values */
576
577/*
578 * Indicates an extension has been received. Used to check for unsolicited or
579 * duplicate extensions.
580 */
581# define SSL_EXT_FLAG_RECEIVED   0x1
582/*
583 * Indicates an extension has been sent: used to enable sending of
584 * corresponding ServerHello extension.
585 */
586# define SSL_EXT_FLAG_SENT       0x2
587
588typedef struct {
589    custom_ext_method *meths;
590    size_t meths_count;
591} custom_ext_methods;
592
593typedef struct cert_st {
594    /* Current active set */
595    /*
596     * ALWAYS points to an element of the pkeys array
597     * Probably it would make more sense to store
598     * an index, not a pointer.
599     */
600    CERT_PKEY *key;
601    /*
602     * For servers the following masks are for the key and auth algorithms
603     * that are supported by the certs below. For clients they are masks of
604     * *disabled* algorithms based on the current session.
605     */
606    int valid;
607    unsigned long mask_k;
608    unsigned long mask_a;
609    unsigned long export_mask_k;
610    unsigned long export_mask_a;
611    /* Client only */
612    unsigned long mask_ssl;
613# ifndef OPENSSL_NO_RSA
614    RSA *rsa_tmp;
615    RSA *(*rsa_tmp_cb) (SSL *ssl, int is_export, int keysize);
616# endif
617# ifndef OPENSSL_NO_DH
618    DH *dh_tmp;
619    DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
620# endif
621# ifndef OPENSSL_NO_ECDH
622    EC_KEY *ecdh_tmp;
623    /* Callback for generating ephemeral ECDH keys */
624    EC_KEY *(*ecdh_tmp_cb) (SSL *ssl, int is_export, int keysize);
625    /* Select ECDH parameters automatically */
626    int ecdh_tmp_auto;
627# endif
628    /* Flags related to certificates */
629    unsigned int cert_flags;
630    CERT_PKEY pkeys[SSL_PKEY_NUM];
631    /*
632     * Certificate types (received or sent) in certificate request message.
633     * On receive this is only set if number of certificate types exceeds
634     * SSL3_CT_NUMBER.
635     */
636    unsigned char *ctypes;
637    size_t ctype_num;
638    /*
639     * signature algorithms peer reports: e.g. supported signature algorithms
640     * extension for server or as part of a certificate request for client.
641     */
642    unsigned char *peer_sigalgs;
643    /* Size of above array */
644    size_t peer_sigalgslen;
645    /*
646     * suppported signature algorithms. When set on a client this is sent in
647     * the client hello as the supported signature algorithms extension. For
648     * servers it represents the signature algorithms we are willing to use.
649     */
650    unsigned char *conf_sigalgs;
651    /* Size of above array */
652    size_t conf_sigalgslen;
653    /*
654     * Client authentication signature algorithms, if not set then uses
655     * conf_sigalgs. On servers these will be the signature algorithms sent
656     * to the client in a cerificate request for TLS 1.2. On a client this
657     * represents the signature algortithms we are willing to use for client
658     * authentication.
659     */
660    unsigned char *client_sigalgs;
661    /* Size of above array */
662    size_t client_sigalgslen;
663    /*
664     * Signature algorithms shared by client and server: cached because these
665     * are used most often.
666     */
667    TLS_SIGALGS *shared_sigalgs;
668    size_t shared_sigalgslen;
669    /*
670     * Certificate setup callback: if set is called whenever a certificate
671     * may be required (client or server). the callback can then examine any
672     * appropriate parameters and setup any certificates required. This
673     * allows advanced applications to select certificates on the fly: for
674     * example based on supported signature algorithms or curves.
675     */
676    int (*cert_cb) (SSL *ssl, void *arg);
677    void *cert_cb_arg;
678    /*
679     * Optional X509_STORE for chain building or certificate validation If
680     * NULL the parent SSL_CTX store is used instead.
681     */
682    X509_STORE *chain_store;
683    X509_STORE *verify_store;
684    /* Raw values of the cipher list from a client */
685    unsigned char *ciphers_raw;
686    size_t ciphers_rawlen;
687    /* Custom extension methods for server and client */
688    custom_ext_methods cli_ext;
689    custom_ext_methods srv_ext;
690    int references;             /* >1 only if SSL_copy_session_id is used */
691    /* non-optimal, but here due to compatibility */
692    unsigned char *alpn_proposed;   /* server */
693    unsigned int alpn_proposed_len;
694    int alpn_sent;                  /* client */
695} CERT;
696
697typedef struct sess_cert_st {
698    STACK_OF(X509) *cert_chain; /* as received from peer (not for SSL2) */
699    /* The 'peer_...' members are used only by clients. */
700    int peer_cert_type;
701    CERT_PKEY *peer_key;        /* points to an element of peer_pkeys (never
702                                 * NULL!) */
703    CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
704    /*
705     * Obviously we don't have the private keys of these, so maybe we
706     * shouldn't even use the CERT_PKEY type here.
707     */
708# ifndef OPENSSL_NO_RSA
709    RSA *peer_rsa_tmp;          /* not used for SSL 2 */
710# endif
711# ifndef OPENSSL_NO_DH
712    DH *peer_dh_tmp;            /* not used for SSL 2 */
713# endif
714# ifndef OPENSSL_NO_ECDH
715    EC_KEY *peer_ecdh_tmp;
716# endif
717    int references;             /* actually always 1 at the moment */
718} SESS_CERT;
719/* Structure containing decoded values of signature algorithms extension */
720struct tls_sigalgs_st {
721    /* NID of hash algorithm */
722    int hash_nid;
723    /* NID of signature algorithm */
724    int sign_nid;
725    /* Combined hash and signature NID */
726    int signandhash_nid;
727    /* Raw values used in extension */
728    unsigned char rsign;
729    unsigned char rhash;
730};
731
732/*
733 * #define MAC_DEBUG
734 */
735
736/*
737 * #define ERR_DEBUG
738 */
739/*
740 * #define ABORT_DEBUG
741 */
742/*
743 * #define PKT_DEBUG 1
744 */
745/*
746 * #define DES_DEBUG
747 */
748/*
749 * #define DES_OFB_DEBUG
750 */
751/*
752 * #define SSL_DEBUG
753 */
754/*
755 * #define RSA_DEBUG
756 */
757/*
758 * #define IDEA_DEBUG
759 */
760
761# define FP_ICC  (int (*)(const void *,const void *))
762# define ssl_put_cipher_by_char(ssl,ciph,ptr) \
763                ((ssl)->method->put_cipher_by_char((ciph),(ptr)))
764
765/*
766 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
767 * of a mess of functions, but hell, think of it as an opaque structure :-)
768 */
769typedef struct ssl3_enc_method {
770    int (*enc) (SSL *, int);
771    int (*mac) (SSL *, unsigned char *, int);
772    int (*setup_key_block) (SSL *);
773    int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
774                                   int);
775    int (*change_cipher_state) (SSL *, int);
776    int (*final_finish_mac) (SSL *, const char *, int, unsigned char *);
777    int finish_mac_length;
778    int (*cert_verify_mac) (SSL *, int, unsigned char *);
779    const char *client_finished_label;
780    int client_finished_label_len;
781    const char *server_finished_label;
782    int server_finished_label_len;
783    int (*alert_value) (int);
784    int (*export_keying_material) (SSL *, unsigned char *, size_t,
785                                   const char *, size_t,
786                                   const unsigned char *, size_t,
787                                   int use_context);
788    /* Various flags indicating protocol version requirements */
789    unsigned int enc_flags;
790    /* Handshake header length */
791    unsigned int hhlen;
792    /* Set the handshake header */
793    void (*set_handshake_header) (SSL *s, int type, unsigned long len);
794    /* Write out handshake message */
795    int (*do_write) (SSL *s);
796} SSL3_ENC_METHOD;
797
798# define SSL_HM_HEADER_LENGTH(s) s->method->ssl3_enc->hhlen
799# define ssl_handshake_start(s) \
800        (((unsigned char *)s->init_buf->data) + s->method->ssl3_enc->hhlen)
801# define ssl_set_handshake_header(s, htype, len) \
802        s->method->ssl3_enc->set_handshake_header(s, htype, len)
803# define ssl_do_write(s)  s->method->ssl3_enc->do_write(s)
804
805/* Values for enc_flags */
806
807/* Uses explicit IV for CBC mode */
808# define SSL_ENC_FLAG_EXPLICIT_IV        0x1
809/* Uses signature algorithms extension */
810# define SSL_ENC_FLAG_SIGALGS            0x2
811/* Uses SHA256 default PRF */
812# define SSL_ENC_FLAG_SHA256_PRF         0x4
813/* Is DTLS */
814# define SSL_ENC_FLAG_DTLS               0x8
815/*
816 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
817 * apply to others in future.
818 */
819# define SSL_ENC_FLAG_TLS1_2_CIPHERS     0x10
820
821# ifndef OPENSSL_NO_COMP
822/* Used for holding the relevant compression methods loaded into SSL_CTX */
823typedef struct ssl3_comp_st {
824    int comp_id;                /* The identifier byte for this compression
825                                 * type */
826    char *name;                 /* Text name used for the compression type */
827    COMP_METHOD *method;        /* The method :-) */
828} SSL3_COMP;
829# endif
830
831# ifndef OPENSSL_NO_BUF_FREELISTS
832typedef struct ssl3_buf_freelist_st {
833    size_t chunklen;
834    unsigned int len;
835    struct ssl3_buf_freelist_entry_st *head;
836} SSL3_BUF_FREELIST;
837
838typedef struct ssl3_buf_freelist_entry_st {
839    struct ssl3_buf_freelist_entry_st *next;
840} SSL3_BUF_FREELIST_ENTRY;
841# endif
842
843extern SSL3_ENC_METHOD ssl3_undef_enc_method;
844OPENSSL_EXTERN const SSL_CIPHER ssl2_ciphers[];
845OPENSSL_EXTERN SSL_CIPHER ssl3_ciphers[];
846
847SSL_METHOD *ssl_bad_method(int ver);
848
849extern SSL3_ENC_METHOD TLSv1_enc_data;
850extern SSL3_ENC_METHOD TLSv1_1_enc_data;
851extern SSL3_ENC_METHOD TLSv1_2_enc_data;
852extern SSL3_ENC_METHOD SSLv3_enc_data;
853extern SSL3_ENC_METHOD DTLSv1_enc_data;
854extern SSL3_ENC_METHOD DTLSv1_2_enc_data;
855
856# define IMPLEMENT_tls_meth_func(version, func_name, s_accept, s_connect, \
857                                s_get_meth, enc_data) \
858const SSL_METHOD *func_name(void)  \
859        { \
860        static const SSL_METHOD func_name##_data= { \
861                version, \
862                tls1_new, \
863                tls1_clear, \
864                tls1_free, \
865                s_accept, \
866                s_connect, \
867                ssl3_read, \
868                ssl3_peek, \
869                ssl3_write, \
870                ssl3_shutdown, \
871                ssl3_renegotiate, \
872                ssl3_renegotiate_check, \
873                ssl3_get_message, \
874                ssl3_read_bytes, \
875                ssl3_write_bytes, \
876                ssl3_dispatch_alert, \
877                ssl3_ctrl, \
878                ssl3_ctx_ctrl, \
879                ssl3_get_cipher_by_char, \
880                ssl3_put_cipher_by_char, \
881                ssl3_pending, \
882                ssl3_num_ciphers, \
883                ssl3_get_cipher, \
884                s_get_meth, \
885                tls1_default_timeout, \
886                &enc_data, \
887                ssl_undefined_void_function, \
888                ssl3_callback_ctrl, \
889                ssl3_ctx_callback_ctrl, \
890        }; \
891        return &func_name##_data; \
892        }
893
894# define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
895const SSL_METHOD *func_name(void)  \
896        { \
897        static const SSL_METHOD func_name##_data= { \
898                SSL3_VERSION, \
899                ssl3_new, \
900                ssl3_clear, \
901                ssl3_free, \
902                s_accept, \
903                s_connect, \
904                ssl3_read, \
905                ssl3_peek, \
906                ssl3_write, \
907                ssl3_shutdown, \
908                ssl3_renegotiate, \
909                ssl3_renegotiate_check, \
910                ssl3_get_message, \
911                ssl3_read_bytes, \
912                ssl3_write_bytes, \
913                ssl3_dispatch_alert, \
914                ssl3_ctrl, \
915                ssl3_ctx_ctrl, \
916                ssl3_get_cipher_by_char, \
917                ssl3_put_cipher_by_char, \
918                ssl3_pending, \
919                ssl3_num_ciphers, \
920                ssl3_get_cipher, \
921                s_get_meth, \
922                ssl3_default_timeout, \
923                &SSLv3_enc_data, \
924                ssl_undefined_void_function, \
925                ssl3_callback_ctrl, \
926                ssl3_ctx_callback_ctrl, \
927        }; \
928        return &func_name##_data; \
929        }
930
931# define IMPLEMENT_ssl23_meth_func(func_name, s_accept, s_connect, s_get_meth) \
932const SSL_METHOD *func_name(void)  \
933        { \
934        static const SSL_METHOD func_name##_data= { \
935        TLS1_2_VERSION, \
936        tls1_new, \
937        tls1_clear, \
938        tls1_free, \
939        s_accept, \
940        s_connect, \
941        ssl23_read, \
942        ssl23_peek, \
943        ssl23_write, \
944        ssl_undefined_function, \
945        ssl_undefined_function, \
946        ssl_ok, \
947        ssl3_get_message, \
948        ssl3_read_bytes, \
949        ssl3_write_bytes, \
950        ssl3_dispatch_alert, \
951        ssl3_ctrl, \
952        ssl3_ctx_ctrl, \
953        ssl23_get_cipher_by_char, \
954        ssl23_put_cipher_by_char, \
955        ssl_undefined_const_function, \
956        ssl23_num_ciphers, \
957        ssl23_get_cipher, \
958        s_get_meth, \
959        ssl23_default_timeout, \
960        &TLSv1_2_enc_data, \
961        ssl_undefined_void_function, \
962        ssl3_callback_ctrl, \
963        ssl3_ctx_callback_ctrl, \
964        }; \
965        return &func_name##_data; \
966        }
967
968# define IMPLEMENT_ssl2_meth_func(func_name, s_accept, s_connect, s_get_meth) \
969const SSL_METHOD *func_name(void)  \
970        { \
971        static const SSL_METHOD func_name##_data= { \
972                SSL2_VERSION, \
973                ssl2_new,       /* local */ \
974                ssl2_clear,     /* local */ \
975                ssl2_free,      /* local */ \
976                s_accept, \
977                s_connect, \
978                ssl2_read, \
979                ssl2_peek, \
980                ssl2_write, \
981                ssl2_shutdown, \
982                ssl_ok, /* NULL - renegotiate */ \
983                ssl_ok, /* NULL - check renegotiate */ \
984                NULL, /* NULL - ssl_get_message */ \
985                NULL, /* NULL - ssl_get_record */ \
986                NULL, /* NULL - ssl_write_bytes */ \
987                NULL, /* NULL - dispatch_alert */ \
988                ssl2_ctrl,      /* local */ \
989                ssl2_ctx_ctrl,  /* local */ \
990                ssl2_get_cipher_by_char, \
991                ssl2_put_cipher_by_char, \
992                ssl2_pending, \
993                ssl2_num_ciphers, \
994                ssl2_get_cipher, \
995                s_get_meth, \
996                ssl2_default_timeout, \
997                &ssl3_undef_enc_method, \
998                ssl_undefined_void_function, \
999                ssl2_callback_ctrl,     /* local */ \
1000                ssl2_ctx_callback_ctrl, /* local */ \
1001        }; \
1002        return &func_name##_data; \
1003        }
1004
1005# define IMPLEMENT_dtls1_meth_func(version, func_name, s_accept, s_connect, \
1006                                        s_get_meth, enc_data) \
1007const SSL_METHOD *func_name(void)  \
1008        { \
1009        static const SSL_METHOD func_name##_data= { \
1010                version, \
1011                dtls1_new, \
1012                dtls1_clear, \
1013                dtls1_free, \
1014                s_accept, \
1015                s_connect, \
1016                ssl3_read, \
1017                ssl3_peek, \
1018                ssl3_write, \
1019                dtls1_shutdown, \
1020                ssl3_renegotiate, \
1021                ssl3_renegotiate_check, \
1022                dtls1_get_message, \
1023                dtls1_read_bytes, \
1024                dtls1_write_app_data_bytes, \
1025                dtls1_dispatch_alert, \
1026                dtls1_ctrl, \
1027                ssl3_ctx_ctrl, \
1028                ssl3_get_cipher_by_char, \
1029                ssl3_put_cipher_by_char, \
1030                ssl3_pending, \
1031                ssl3_num_ciphers, \
1032                dtls1_get_cipher, \
1033                s_get_meth, \
1034                dtls1_default_timeout, \
1035                &enc_data, \
1036                ssl_undefined_void_function, \
1037                ssl3_callback_ctrl, \
1038                ssl3_ctx_callback_ctrl, \
1039        }; \
1040        return &func_name##_data; \
1041        }
1042
1043struct openssl_ssl_test_functions {
1044    int (*p_ssl_init_wbio_buffer) (SSL *s, int push);
1045    int (*p_ssl3_setup_buffers) (SSL *s);
1046    int (*p_tls1_process_heartbeat) (SSL *s);
1047    int (*p_dtls1_process_heartbeat) (SSL *s);
1048};
1049
1050# ifndef OPENSSL_UNIT_TEST
1051
1052void ssl_clear_cipher_ctx(SSL *s);
1053int ssl_clear_bad_session(SSL *s);
1054CERT *ssl_cert_new(void);
1055CERT *ssl_cert_dup(CERT *cert);
1056void ssl_cert_set_default_md(CERT *cert);
1057int ssl_cert_inst(CERT **o);
1058void ssl_cert_clear_certs(CERT *c);
1059void ssl_cert_free(CERT *c);
1060SESS_CERT *ssl_sess_cert_new(void);
1061void ssl_sess_cert_free(SESS_CERT *sc);
1062int ssl_set_peer_cert_type(SESS_CERT *c, int type);
1063int ssl_get_new_session(SSL *s, int session);
1064int ssl_get_prev_session(SSL *s, unsigned char *session, int len,
1065                         const unsigned char *limit);
1066SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket);
1067int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
1068DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
1069int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1070                          const SSL_CIPHER *const *bp);
1071STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1072                                               int num,
1073                                               STACK_OF(SSL_CIPHER) **skp);
1074int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1075                             unsigned char *p,
1076                             int (*put_cb) (const SSL_CIPHER *,
1077                                            unsigned char *));
1078STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
1079                                             STACK_OF(SSL_CIPHER) **pref,
1080                                             STACK_OF(SSL_CIPHER) **sorted,
1081                                             const char *rule_str, CERT *c);
1082void ssl_update_cache(SSL *s, int mode);
1083int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
1084                       const EVP_MD **md, int *mac_pkey_type,
1085                       int *mac_secret_size, SSL_COMP **comp);
1086int ssl_get_handshake_digest(int i, long *mask, const EVP_MD **md);
1087int ssl_cipher_get_cert_index(const SSL_CIPHER *c);
1088const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr);
1089int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain);
1090int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain);
1091int ssl_cert_add0_chain_cert(CERT *c, X509 *x);
1092int ssl_cert_add1_chain_cert(CERT *c, X509 *x);
1093int ssl_cert_select_current(CERT *c, X509 *x);
1094int ssl_cert_set_current(CERT *c, long arg);
1095X509 *ssl_cert_get0_next_certificate(CERT *c, int first);
1096void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg),
1097                          void *arg);
1098
1099int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
1100int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l);
1101int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags);
1102int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref);
1103int ssl_undefined_function(SSL *s);
1104int ssl_undefined_void_function(void);
1105int ssl_undefined_const_function(const SSL *s);
1106CERT_PKEY *ssl_get_server_send_pkey(const SSL *s);
1107#  ifndef OPENSSL_NO_TLSEXT
1108int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
1109                                   size_t *serverinfo_length);
1110#  endif
1111EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd);
1112int ssl_cert_type(X509 *x, EVP_PKEY *pkey);
1113void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher);
1114STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
1115int ssl_verify_alarm_type(long type);
1116void ssl_load_ciphers(void);
1117int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, int len);
1118
1119int ssl2_enc_init(SSL *s, int client);
1120int ssl2_generate_key_material(SSL *s);
1121int ssl2_enc(SSL *s, int send_data);
1122void ssl2_mac(SSL *s, unsigned char *mac, int send_data);
1123const SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p);
1124int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
1125int ssl2_part_read(SSL *s, unsigned long f, int i);
1126int ssl2_do_write(SSL *s);
1127int ssl2_set_certificate(SSL *s, int type, int len,
1128                         const unsigned char *data);
1129void ssl2_return_error(SSL *s, int reason);
1130void ssl2_write_error(SSL *s);
1131int ssl2_num_ciphers(void);
1132const SSL_CIPHER *ssl2_get_cipher(unsigned int u);
1133int ssl2_new(SSL *s);
1134void ssl2_free(SSL *s);
1135int ssl2_accept(SSL *s);
1136int ssl2_connect(SSL *s);
1137int ssl2_read(SSL *s, void *buf, int len);
1138int ssl2_peek(SSL *s, void *buf, int len);
1139int ssl2_write(SSL *s, const void *buf, int len);
1140int ssl2_shutdown(SSL *s);
1141void ssl2_clear(SSL *s);
1142long ssl2_ctrl(SSL *s, int cmd, long larg, void *parg);
1143long ssl2_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
1144long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
1145long ssl2_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
1146int ssl2_pending(const SSL *s);
1147long ssl2_default_timeout(void);
1148
1149const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
1150int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
1151void ssl3_init_finished_mac(SSL *s);
1152int ssl3_send_server_certificate(SSL *s);
1153int ssl3_send_newsession_ticket(SSL *s);
1154int ssl3_send_cert_status(SSL *s);
1155int ssl3_get_finished(SSL *s, int state_a, int state_b);
1156int ssl3_setup_key_block(SSL *s);
1157int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b);
1158int ssl3_change_cipher_state(SSL *s, int which);
1159void ssl3_cleanup_key_block(SSL *s);
1160int ssl3_do_write(SSL *s, int type);
1161int ssl3_send_alert(SSL *s, int level, int desc);
1162int ssl3_generate_master_secret(SSL *s, unsigned char *out,
1163                                unsigned char *p, int len);
1164int ssl3_get_req_cert_type(SSL *s, unsigned char *p);
1165long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
1166int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen);
1167int ssl3_num_ciphers(void);
1168const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
1169int ssl3_renegotiate(SSL *ssl);
1170int ssl3_renegotiate_check(SSL *ssl);
1171int ssl3_dispatch_alert(SSL *s);
1172int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
1173int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
1174int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,
1175                          unsigned char *p);
1176int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
1177void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
1178int ssl3_enc(SSL *s, int send_data);
1179int n_ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
1180void ssl3_free_digest_list(SSL *s);
1181unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk);
1182SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt,
1183                               STACK_OF(SSL_CIPHER) *srvr);
1184int ssl3_setup_buffers(SSL *s);
1185int ssl3_setup_read_buffer(SSL *s);
1186int ssl3_setup_write_buffer(SSL *s);
1187int ssl3_release_read_buffer(SSL *s);
1188int ssl3_release_write_buffer(SSL *s);
1189int ssl3_digest_cached_records(SSL *s);
1190int ssl3_new(SSL *s);
1191void ssl3_free(SSL *s);
1192int ssl3_accept(SSL *s);
1193int ssl3_connect(SSL *s);
1194int ssl3_read(SSL *s, void *buf, int len);
1195int ssl3_peek(SSL *s, void *buf, int len);
1196int ssl3_write(SSL *s, const void *buf, int len);
1197int ssl3_shutdown(SSL *s);
1198void ssl3_clear(SSL *s);
1199long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
1200long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
1201long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
1202long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
1203int ssl3_pending(const SSL *s);
1204
1205void ssl3_record_sequence_update(unsigned char *seq);
1206int ssl3_do_change_cipher_spec(SSL *ssl);
1207long ssl3_default_timeout(void);
1208
1209void ssl3_set_handshake_header(SSL *s, int htype, unsigned long len);
1210int ssl3_handshake_write(SSL *s);
1211
1212int ssl23_num_ciphers(void);
1213const SSL_CIPHER *ssl23_get_cipher(unsigned int u);
1214int ssl23_read(SSL *s, void *buf, int len);
1215int ssl23_peek(SSL *s, void *buf, int len);
1216int ssl23_write(SSL *s, const void *buf, int len);
1217int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
1218const SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p);
1219long ssl23_default_timeout(void);
1220
1221long tls1_default_timeout(void);
1222int dtls1_do_write(SSL *s, int type);
1223int ssl3_read_n(SSL *s, int n, int max, int extend);
1224int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
1225int ssl3_do_compress(SSL *ssl);
1226int ssl3_do_uncompress(SSL *ssl);
1227int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
1228                       unsigned int len);
1229unsigned char *dtls1_set_message_header(SSL *s,
1230                                        unsigned char *p, unsigned char mt,
1231                                        unsigned long len,
1232                                        unsigned long frag_off,
1233                                        unsigned long frag_len);
1234
1235int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
1236int dtls1_write_bytes(SSL *s, int type, const void *buf, int len);
1237
1238int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
1239int dtls1_read_failed(SSL *s, int code);
1240int dtls1_buffer_message(SSL *s, int ccs);
1241int dtls1_retransmit_message(SSL *s, unsigned short seq,
1242                             unsigned long frag_off, int *found);
1243int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
1244int dtls1_retransmit_buffered_messages(SSL *s);
1245void dtls1_clear_record_buffer(SSL *s);
1246void dtls1_get_message_header(unsigned char *data,
1247                              struct hm_header_st *msg_hdr);
1248void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
1249void dtls1_reset_seq_numbers(SSL *s, int rw);
1250long dtls1_default_timeout(void);
1251struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
1252int dtls1_check_timeout_num(SSL *s);
1253int dtls1_handle_timeout(SSL *s);
1254const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
1255void dtls1_start_timer(SSL *s);
1256void dtls1_stop_timer(SSL *s);
1257int dtls1_is_timer_expired(SSL *s);
1258void dtls1_double_timeout(SSL *s);
1259int dtls1_send_newsession_ticket(SSL *s);
1260unsigned int dtls1_min_mtu(SSL *s);
1261unsigned int dtls1_link_min_mtu(void);
1262void dtls1_hm_fragment_free(hm_fragment *frag);
1263
1264/* some client-only functions */
1265int ssl3_client_hello(SSL *s);
1266int ssl3_get_server_hello(SSL *s);
1267int ssl3_get_certificate_request(SSL *s);
1268int ssl3_get_new_session_ticket(SSL *s);
1269int ssl3_get_cert_status(SSL *s);
1270int ssl3_get_server_done(SSL *s);
1271int ssl3_send_client_verify(SSL *s);
1272int ssl3_send_client_certificate(SSL *s);
1273int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
1274int ssl3_send_client_key_exchange(SSL *s);
1275int ssl3_get_key_exchange(SSL *s);
1276int ssl3_get_server_certificate(SSL *s);
1277int ssl3_check_cert_and_algorithm(SSL *s);
1278#  ifndef OPENSSL_NO_TLSEXT
1279#   ifndef OPENSSL_NO_NEXTPROTONEG
1280int ssl3_send_next_proto(SSL *s);
1281#   endif
1282#  endif
1283
1284int dtls1_client_hello(SSL *s);
1285
1286/* some server-only functions */
1287int ssl3_get_client_hello(SSL *s);
1288int ssl3_send_server_hello(SSL *s);
1289int ssl3_send_hello_request(SSL *s);
1290int ssl3_send_server_key_exchange(SSL *s);
1291int ssl3_send_certificate_request(SSL *s);
1292int ssl3_send_server_done(SSL *s);
1293int ssl3_get_client_certificate(SSL *s);
1294int ssl3_get_client_key_exchange(SSL *s);
1295int ssl3_get_cert_verify(SSL *s);
1296#  ifndef OPENSSL_NO_NEXTPROTONEG
1297int ssl3_get_next_proto(SSL *s);
1298#  endif
1299
1300int ssl23_accept(SSL *s);
1301int ssl23_connect(SSL *s);
1302int ssl23_read_bytes(SSL *s, int n);
1303int ssl23_write_bytes(SSL *s);
1304
1305int tls1_new(SSL *s);
1306void tls1_free(SSL *s);
1307void tls1_clear(SSL *s);
1308long tls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1309long tls1_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
1310
1311int dtls1_new(SSL *s);
1312int dtls1_accept(SSL *s);
1313int dtls1_connect(SSL *s);
1314void dtls1_free(SSL *s);
1315void dtls1_clear(SSL *s);
1316long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1317int dtls1_shutdown(SSL *s);
1318
1319long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
1320int dtls1_get_record(SSL *s);
1321int do_dtls1_write(SSL *s, int type, const unsigned char *buf,
1322                   unsigned int len, int create_empty_fragement);
1323int dtls1_dispatch_alert(SSL *s);
1324
1325int ssl_init_wbio_buffer(SSL *s, int push);
1326void ssl_free_wbio_buffer(SSL *s);
1327
1328int tls1_change_cipher_state(SSL *s, int which);
1329int tls1_setup_key_block(SSL *s);
1330int tls1_enc(SSL *s, int snd);
1331int tls1_final_finish_mac(SSL *s,
1332                          const char *str, int slen, unsigned char *p);
1333int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
1334int tls1_mac(SSL *ssl, unsigned char *md, int snd);
1335int tls1_generate_master_secret(SSL *s, unsigned char *out,
1336                                unsigned char *p, int len);
1337int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1338                                const char *label, size_t llen,
1339                                const unsigned char *p, size_t plen,
1340                                int use_context);
1341int tls1_alert_code(int code);
1342int ssl3_alert_code(int code);
1343int ssl_ok(SSL *s);
1344
1345#  ifndef OPENSSL_NO_ECDH
1346int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
1347#  endif
1348
1349SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
1350
1351#  ifndef OPENSSL_NO_EC
1352int tls1_ec_curve_id2nid(int curve_id);
1353int tls1_ec_nid2curve_id(int nid);
1354int tls1_check_curve(SSL *s, const unsigned char *p, size_t len);
1355int tls1_shared_curve(SSL *s, int nmatch);
1356int tls1_set_curves(unsigned char **pext, size_t *pextlen,
1357                    int *curves, size_t ncurves);
1358int tls1_set_curves_list(unsigned char **pext, size_t *pextlen,
1359                         const char *str);
1360#   ifndef OPENSSL_NO_ECDH
1361int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
1362#   endif                       /* OPENSSL_NO_ECDH */
1363#  endif                        /* OPENSSL_NO_EC */
1364
1365#  ifndef OPENSSL_NO_TLSEXT
1366int tls1_shared_list(SSL *s,
1367                     const unsigned char *l1, size_t l1len,
1368                     const unsigned char *l2, size_t l2len, int nmatch);
1369unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *buf,
1370                                          unsigned char *limit, int *al);
1371unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *buf,
1372                                          unsigned char *limit, int *al);
1373int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **data,
1374                                 unsigned char *limit);
1375int tls1_set_server_sigalgs(SSL *s);
1376int ssl_check_clienthello_tlsext_late(SSL *s);
1377int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data,
1378                                 unsigned char *d, int n);
1379int ssl_prepare_clienthello_tlsext(SSL *s);
1380int ssl_prepare_serverhello_tlsext(SSL *s);
1381
1382#   ifndef OPENSSL_NO_HEARTBEATS
1383int tls1_heartbeat(SSL *s);
1384int dtls1_heartbeat(SSL *s);
1385int tls1_process_heartbeat(SSL *s);
1386int dtls1_process_heartbeat(SSL *s);
1387#   endif
1388
1389#   ifdef OPENSSL_NO_SHA256
1390#    define tlsext_tick_md  EVP_sha1
1391#   else
1392#    define tlsext_tick_md  EVP_sha256
1393#   endif
1394int tls1_process_ticket(SSL *s, unsigned char *session_id, int len,
1395                        const unsigned char *limit, SSL_SESSION **ret);
1396
1397int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
1398                         const EVP_MD *md);
1399int tls12_get_sigid(const EVP_PKEY *pk);
1400const EVP_MD *tls12_get_hash(unsigned char hash_alg);
1401
1402int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
1403int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, int client);
1404int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
1405                     int idx);
1406void tls1_set_cert_validity(SSL *s);
1407
1408#  endif
1409EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
1410void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
1411int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1412                                        int maxlen);
1413int ssl_parse_serverhello_renegotiate_ext(SSL *s, unsigned char *d, int len,
1414                                          int *al);
1415int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1416                                        int maxlen);
1417int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len,
1418                                          int *al);
1419long ssl_get_algorithm2(SSL *s);
1420int tls1_save_sigalgs(SSL *s, const unsigned char *data, int dsize);
1421int tls1_process_sigalgs(SSL *s);
1422size_t tls12_get_psigalgs(SSL *s, const unsigned char **psigs);
1423int tls12_check_peer_sigalg(const EVP_MD **pmd, SSL *s,
1424                            const unsigned char *sig, EVP_PKEY *pkey);
1425void ssl_set_client_disabled(SSL *s);
1426
1427int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
1428                                     int maxlen);
1429int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len,
1430                                       int *al);
1431int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
1432                                     int maxlen);
1433int ssl_parse_serverhello_use_srtp_ext(SSL *s, unsigned char *d, int len,
1434                                       int *al);
1435
1436/* s3_cbc.c */
1437void ssl3_cbc_copy_mac(unsigned char *out,
1438                       const SSL3_RECORD *rec,
1439                       unsigned md_size, unsigned orig_len);
1440int ssl3_cbc_remove_padding(const SSL *s,
1441                            SSL3_RECORD *rec,
1442                            unsigned block_size, unsigned mac_size);
1443int tls1_cbc_remove_padding(const SSL *s,
1444                            SSL3_RECORD *rec,
1445                            unsigned block_size, unsigned mac_size);
1446char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
1447int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
1448                           unsigned char *md_out,
1449                           size_t *md_out_size,
1450                           const unsigned char header[13],
1451                           const unsigned char *data,
1452                           size_t data_plus_mac_size,
1453                           size_t data_plus_mac_plus_padding_size,
1454                           const unsigned char *mac_secret,
1455                           unsigned mac_secret_length, char is_sslv3);
1456
1457void tls_fips_digest_extra(const EVP_CIPHER_CTX *cipher_ctx,
1458                           EVP_MD_CTX *mac_ctx, const unsigned char *data,
1459                           size_t data_len, size_t orig_len);
1460
1461int srp_verify_server_param(SSL *s, int *al);
1462
1463/* t1_ext.c */
1464
1465void custom_ext_init(custom_ext_methods *meths);
1466
1467int custom_ext_parse(SSL *s, int server,
1468                     unsigned int ext_type,
1469                     const unsigned char *ext_data, size_t ext_size, int *al);
1470int custom_ext_add(SSL *s, int server,
1471                   unsigned char **pret, unsigned char *limit, int *al);
1472
1473int custom_exts_copy(custom_ext_methods *dst, const custom_ext_methods *src);
1474void custom_exts_free(custom_ext_methods *exts);
1475
1476# else
1477
1478#  define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
1479#  define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
1480#  define tls1_process_heartbeat SSL_test_functions()->p_tls1_process_heartbeat
1481#  define dtls1_process_heartbeat SSL_test_functions()->p_dtls1_process_heartbeat
1482
1483# endif
1484#endif
1485