ssl/ssl_locl.h

   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 # define SSL_NOT_DEFAULT         0x00000200L
 439
 440 /* we have used 000003ff - 22 bits left to go */
 441
 442 /*-
 443  * Macros to check the export status and cipher strength for export ciphers.
 444  * Even though the macros for EXPORT and EXPORT40/56 have similar names,
 445  * their meaning is different:
 446  * *_EXPORT macros check the 'exportable' status.
 447  * *_EXPORT40/56 macros are used to check whether a certain cipher strength
 448  *          is given.
 449  * Since the SSL_IS_EXPORT* and SSL_EXPORT* macros depend on the correct
 450  * algorithm structure element to be passed (algorithms, algo_strength) and no
 451  * typechecking can be done as they are all of type unsigned long, their
 452  * direct usage is discouraged.
 453  * Use the SSL_C_* macros instead.
 454  */
 455 # define SSL_IS_EXPORT(a)        ((a)&SSL_EXPORT)
 456 # define SSL_IS_EXPORT56(a)      ((a)&SSL_EXP56)
 457 # define SSL_IS_EXPORT40(a)      ((a)&SSL_EXP40)
 458 # define SSL_C_IS_EXPORT(c)      SSL_IS_EXPORT((c)->algo_strength)
 459 # define SSL_C_IS_EXPORT56(c)    SSL_IS_EXPORT56((c)->algo_strength)
 460 # define SSL_C_IS_EXPORT40(c)    SSL_IS_EXPORT40((c)->algo_strength)
 461
 462 # define SSL_EXPORT_KEYLENGTH(a,s)       (SSL_IS_EXPORT40(s) ? 5 : \
 463                                  (a) == SSL_DES ? 8 : 7)
 464 # define SSL_EXPORT_PKEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 512 : 1024)
 465 # define SSL_C_EXPORT_KEYLENGTH(c)       SSL_EXPORT_KEYLENGTH((c)->algorithm_enc, \
 466                                 (c)->algo_strength)
 467 # define SSL_C_EXPORT_PKEYLENGTH(c)      SSL_EXPORT_PKEYLENGTH((c)->algo_strength)
 468
 469 /* Mostly for SSLv3 */
 470 # define SSL_PKEY_RSA_ENC        0
 471 # define SSL_PKEY_RSA_SIGN       1
 472 # define SSL_PKEY_DSA_SIGN       2
 473 # define SSL_PKEY_DH_RSA         3
 474 # define SSL_PKEY_DH_DSA         4
 475 # define SSL_PKEY_ECC            5
 476 # define SSL_PKEY_GOST94         6
 477 # define SSL_PKEY_GOST01         7
 478 # define SSL_PKEY_NUM            8
 479
 480 /*-
 481  * SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
 482  *          <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
 483  * SSL_kDH  <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
 484  * SSL_kEDH <- RSA_ENC | RSA_SIGN | DSA_SIGN
 485  * SSL_aRSA <- RSA_ENC | RSA_SIGN
 486  * SSL_aDSS <- DSA_SIGN
 487  */
 488
 489 /*-
 490 #define CERT_INVALID            0
 491 #define CERT_PUBLIC_KEY         1
 492 #define CERT_PRIVATE_KEY        2
 493 */
 494
 495 # ifndef OPENSSL_NO_EC
 496 /*
 497  * From ECC-TLS draft, used in encoding the curve type in ECParameters
 498  */
 499 #  define EXPLICIT_PRIME_CURVE_TYPE  1
 500 #  define EXPLICIT_CHAR2_CURVE_TYPE  2
 501 #  define NAMED_CURVE_TYPE           3
 502 # endif                         /* OPENSSL_NO_EC */
 503
 504 typedef struct cert_pkey_st {
 505     X509 *x509;
 506     EVP_PKEY *privatekey;
 507     /* Digest to use when signing */
 508     const EVP_MD *digest;
 509 } CERT_PKEY;
 510
 511 typedef struct cert_st {
 512     /* Current active set */
 513     /*
 514      * ALWAYS points to an element of the pkeys array
 515      * Probably it would make more sense to store
 516      * an index, not a pointer.
 517      */
 518     CERT_PKEY *key;
 519     /*
 520      * The following masks are for the key and auth algorithms that are
 521      * supported by the certs below
 522      */
 523     int valid;
 524     unsigned long mask_k;
 525     unsigned long mask_a;
 526     unsigned long export_mask_k;
 527     unsigned long export_mask_a;
 528 # ifndef OPENSSL_NO_RSA
 529     RSA *rsa_tmp;
 530     RSA *(*rsa_tmp_cb) (SSL *ssl, int is_export, int keysize);
 531 # endif
 532 # ifndef OPENSSL_NO_DH
 533     DH *dh_tmp;
 534     DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
 535 # endif
 536 # ifndef OPENSSL_NO_ECDH
 537     EC_KEY *ecdh_tmp;
 538     /* Callback for generating ephemeral ECDH keys */
 539     EC_KEY *(*ecdh_tmp_cb) (SSL *ssl, int is_export, int keysize);
 540 # endif
 541     CERT_PKEY pkeys[SSL_PKEY_NUM];
 542     int references;             /* >1 only if SSL_copy_session_id is used */
 543 } CERT;
 544
 545 typedef struct sess_cert_st {
 546     STACK_OF(X509) *cert_chain; /* as received from peer (not for SSL2) */
 547     /* The 'peer_...' members are used only by clients. */
 548     int peer_cert_type;
 549     CERT_PKEY *peer_key;        /* points to an element of peer_pkeys (never
 550                                  * NULL!) */
 551     CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
 552     /*
 553      * Obviously we don't have the private keys of these, so maybe we
 554      * shouldn't even use the CERT_PKEY type here.
 555      */
 556 # ifndef OPENSSL_NO_RSA
 557     RSA *peer_rsa_tmp;          /* not used for SSL 2 */
 558 # endif
 559 # ifndef OPENSSL_NO_DH
 560     DH *peer_dh_tmp;            /* not used for SSL 2 */
 561 # endif
 562 # ifndef OPENSSL_NO_ECDH
 563     EC_KEY *peer_ecdh_tmp;
 564 # endif
 565     int references;             /* actually always 1 at the moment */
 566 } SESS_CERT;
 567
 568 /*
 569  * #define MAC_DEBUG
 570  */
 571
 572 /*
 573  * #define ERR_DEBUG
 574  */
 575 /*
 576  * #define ABORT_DEBUG
 577  */
 578 /*
 579  * #define PKT_DEBUG 1
 580  */
 581 /*
 582  * #define DES_DEBUG
 583  */
 584 /*
 585  * #define DES_OFB_DEBUG
 586  */
 587 /*
 588  * #define SSL_DEBUG
 589  */
 590 /*
 591  * #define RSA_DEBUG
 592  */
 593 /*
 594  * #define IDEA_DEBUG
 595  */
 596
 597 # define FP_ICC  (int (*)(const void *,const void *))
 598 # define ssl_put_cipher_by_char(ssl,ciph,ptr) \
 599                 ((ssl)->method->put_cipher_by_char((ciph),(ptr)))
 600 # define ssl_get_cipher_by_char(ssl,ptr) \
 601                 ((ssl)->method->get_cipher_by_char(ptr))
 602
 603 /*
 604  * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
 605  * of a mess of functions, but hell, think of it as an opaque structure :-)
 606  */
 607 typedef struct ssl3_enc_method {
 608     int (*enc) (SSL *, int);
 609     int (*mac) (SSL *, unsigned char *, int);
 610     int (*setup_key_block) (SSL *);
 611     int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
 612                                    int);
 613     int (*change_cipher_state) (SSL *, int);
 614     int (*final_finish_mac) (SSL *, const char *, int, unsigned char *);
 615     int finish_mac_length;
 616     int (*cert_verify_mac) (SSL *, int, unsigned char *);
 617     const char *client_finished_label;
 618     int client_finished_label_len;
 619     const char *server_finished_label;
 620     int server_finished_label_len;
 621     int (*alert_value) (int);
 622     int (*export_keying_material) (SSL *, unsigned char *, size_t,
 623                                    const char *, size_t,
 624                                    const unsigned char *, size_t,
 625                                    int use_context);
 626 } SSL3_ENC_METHOD;
 627
 628 # ifndef OPENSSL_NO_COMP
 629 /* Used for holding the relevant compression methods loaded into SSL_CTX */
 630 typedef struct ssl3_comp_st {
 631     int comp_id;                /* The identifier byte for this compression
 632                                  * type */
 633     char *name;                 /* Text name used for the compression type */
 634     COMP_METHOD *method;        /* The method :-) */
 635 } SSL3_COMP;
 636 # endif
 637
 638 # ifndef OPENSSL_NO_BUF_FREELISTS
 639 typedef struct ssl3_buf_freelist_st {
 640     size_t chunklen;
 641     unsigned int len;
 642     struct ssl3_buf_freelist_entry_st *head;
 643 } SSL3_BUF_FREELIST;
 644
 645 typedef struct ssl3_buf_freelist_entry_st {
 646     struct ssl3_buf_freelist_entry_st *next;
 647 } SSL3_BUF_FREELIST_ENTRY;
 648 # endif
 649
 650 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
 651 OPENSSL_EXTERN const SSL_CIPHER ssl2_ciphers[];
 652 OPENSSL_EXTERN SSL_CIPHER ssl3_ciphers[];
 653
 654 SSL_METHOD *ssl_bad_method(int ver);
 655
 656 extern SSL3_ENC_METHOD TLSv1_enc_data;
 657 extern SSL3_ENC_METHOD SSLv3_enc_data;
 658 extern SSL3_ENC_METHOD DTLSv1_enc_data;
 659
 660 # define SSL_IS_DTLS(s) (s->method->version == DTLS1_VERSION)
 661
 662 # define IMPLEMENT_tls_meth_func(version, func_name, s_accept, s_connect, \
 663                                 s_get_meth) \
 664 const SSL_METHOD *func_name(void)  \
 665         { \
 666         static const SSL_METHOD func_name##_data= { \
 667                 version, \
 668                 tls1_new, \
 669                 tls1_clear, \
 670                 tls1_free, \
 671                 s_accept, \
 672                 s_connect, \
 673                 ssl3_read, \
 674                 ssl3_peek, \
 675                 ssl3_write, \
 676                 ssl3_shutdown, \
 677                 ssl3_renegotiate, \
 678                 ssl3_renegotiate_check, \
 679                 ssl3_get_message, \
 680                 ssl3_read_bytes, \
 681                 ssl3_write_bytes, \
 682                 ssl3_dispatch_alert, \
 683                 ssl3_ctrl, \
 684                 ssl3_ctx_ctrl, \
 685                 ssl3_get_cipher_by_char, \
 686                 ssl3_put_cipher_by_char, \
 687                 ssl3_pending, \
 688                 ssl3_num_ciphers, \
 689                 ssl3_get_cipher, \
 690                 s_get_meth, \
 691                 tls1_default_timeout, \
 692                 &TLSv1_enc_data, \
 693                 ssl_undefined_void_function, \
 694                 ssl3_callback_ctrl, \
 695                 ssl3_ctx_callback_ctrl, \
 696         }; \
 697         return &func_name##_data; \
 698         }
 699
 700 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 701 const SSL_METHOD *func_name(void)  \
 702         { \
 703         static const SSL_METHOD func_name##_data= { \
 704                 SSL3_VERSION, \
 705                 ssl3_new, \
 706                 ssl3_clear, \
 707                 ssl3_free, \
 708                 s_accept, \
 709                 s_connect, \
 710                 ssl3_read, \
 711                 ssl3_peek, \
 712                 ssl3_write, \
 713                 ssl3_shutdown, \
 714                 ssl3_renegotiate, \
 715                 ssl3_renegotiate_check, \
 716                 ssl3_get_message, \
 717                 ssl3_read_bytes, \
 718                 ssl3_write_bytes, \
 719                 ssl3_dispatch_alert, \
 720                 ssl3_ctrl, \
 721                 ssl3_ctx_ctrl, \
 722                 ssl3_get_cipher_by_char, \
 723                 ssl3_put_cipher_by_char, \
 724                 ssl3_pending, \
 725                 ssl3_num_ciphers, \
 726                 ssl3_get_cipher, \
 727                 s_get_meth, \
 728                 ssl3_default_timeout, \
 729                 &SSLv3_enc_data, \
 730                 ssl_undefined_void_function, \
 731                 ssl3_callback_ctrl, \
 732                 ssl3_ctx_callback_ctrl, \
 733         }; \
 734         return &func_name##_data; \
 735         }
 736
 737 # define IMPLEMENT_ssl23_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 738 const SSL_METHOD *func_name(void)  \
 739         { \
 740         static const SSL_METHOD func_name##_data= { \
 741         TLS1_2_VERSION, \
 742         tls1_new, \
 743         tls1_clear, \
 744         tls1_free, \
 745         s_accept, \
 746         s_connect, \
 747         ssl23_read, \
 748         ssl23_peek, \
 749         ssl23_write, \
 750         ssl_undefined_function, \
 751         ssl_undefined_function, \
 752         ssl_ok, \
 753         ssl3_get_message, \
 754         ssl3_read_bytes, \
 755         ssl3_write_bytes, \
 756         ssl3_dispatch_alert, \
 757         ssl3_ctrl, \
 758         ssl3_ctx_ctrl, \
 759         ssl23_get_cipher_by_char, \
 760         ssl23_put_cipher_by_char, \
 761         ssl_undefined_const_function, \
 762         ssl23_num_ciphers, \
 763         ssl23_get_cipher, \
 764         s_get_meth, \
 765         ssl23_default_timeout, \
 766         &ssl3_undef_enc_method, \
 767         ssl_undefined_void_function, \
 768         ssl3_callback_ctrl, \
 769         ssl3_ctx_callback_ctrl, \
 770         }; \
 771         return &func_name##_data; \
 772         }
 773
 774 # define IMPLEMENT_ssl2_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 775 const SSL_METHOD *func_name(void)  \
 776         { \
 777         static const SSL_METHOD func_name##_data= { \
 778                 SSL2_VERSION, \
 779                 ssl2_new,       /* local */ \
 780                 ssl2_clear,     /* local */ \
 781                 ssl2_free,      /* local */ \
 782                 s_accept, \
 783                 s_connect, \
 784                 ssl2_read, \
 785                 ssl2_peek, \
 786                 ssl2_write, \
 787                 ssl2_shutdown, \
 788                 ssl_ok, /* NULL - renegotiate */ \
 789                 ssl_ok, /* NULL - check renegotiate */ \
 790                 NULL, /* NULL - ssl_get_message */ \
 791                 NULL, /* NULL - ssl_get_record */ \
 792                 NULL, /* NULL - ssl_write_bytes */ \
 793                 NULL, /* NULL - dispatch_alert */ \
 794                 ssl2_ctrl,      /* local */ \
 795                 ssl2_ctx_ctrl,  /* local */ \
 796                 ssl2_get_cipher_by_char, \
 797                 ssl2_put_cipher_by_char, \
 798                 ssl2_pending, \
 799                 ssl2_num_ciphers, \
 800                 ssl2_get_cipher, \
 801                 s_get_meth, \
 802                 ssl2_default_timeout, \
 803                 &ssl3_undef_enc_method, \
 804                 ssl_undefined_void_function, \
 805                 ssl2_callback_ctrl,     /* local */ \
 806                 ssl2_ctx_callback_ctrl, /* local */ \
 807         }; \
 808         return &func_name##_data; \
 809         }
 810
 811 # define IMPLEMENT_dtls1_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 812 const SSL_METHOD *func_name(void)  \
 813         { \
 814         static const SSL_METHOD func_name##_data= { \
 815                 DTLS1_VERSION, \
 816                 dtls1_new, \
 817                 dtls1_clear, \
 818                 dtls1_free, \
 819                 s_accept, \
 820                 s_connect, \
 821                 ssl3_read, \
 822                 ssl3_peek, \
 823                 ssl3_write, \
 824                 dtls1_shutdown, \
 825                 ssl3_renegotiate, \
 826                 ssl3_renegotiate_check, \
 827                 dtls1_get_message, \
 828                 dtls1_read_bytes, \
 829                 dtls1_write_app_data_bytes, \
 830                 dtls1_dispatch_alert, \
 831                 dtls1_ctrl, \
 832                 ssl3_ctx_ctrl, \
 833                 ssl3_get_cipher_by_char, \
 834                 ssl3_put_cipher_by_char, \
 835                 ssl3_pending, \
 836                 ssl3_num_ciphers, \
 837                 dtls1_get_cipher, \
 838                 s_get_meth, \
 839                 dtls1_default_timeout, \
 840                 &DTLSv1_enc_data, \
 841                 ssl_undefined_void_function, \
 842                 ssl3_callback_ctrl, \
 843                 ssl3_ctx_callback_ctrl, \
 844         }; \
 845         return &func_name##_data; \
 846         }
 847
 848 struct openssl_ssl_test_functions {
 849     int (*p_ssl_init_wbio_buffer) (SSL *s, int push);
 850     int (*p_ssl3_setup_buffers) (SSL *s);
 851     int (*p_tls1_process_heartbeat) (SSL *s);
 852     int (*p_dtls1_process_heartbeat) (SSL *s);
 853 };
 854
 855 # ifndef OPENSSL_UNIT_TEST
 856
 857 void ssl_clear_cipher_ctx(SSL *s);
 858 int ssl_clear_bad_session(SSL *s);
 859 CERT *ssl_cert_new(void);
 860 CERT *ssl_cert_dup(CERT *cert);
 861 int ssl_cert_inst(CERT **o);
 862 void ssl_cert_free(CERT *c);
 863 SESS_CERT *ssl_sess_cert_new(void);
 864 void ssl_sess_cert_free(SESS_CERT *sc);
 865 int ssl_set_peer_cert_type(SESS_CERT *c, int type);
 866 int ssl_get_new_session(SSL *s, int session);
 867 int ssl_get_prev_session(SSL *s, unsigned char *session, int len,
 868                          const unsigned char *limit);
 869 SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket);
 870 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
 871 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
 872 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
 873                           const SSL_CIPHER *const *bp);
 874 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
 875                                                int num,
 876                                                STACK_OF(SSL_CIPHER) **skp);
 877 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
 878                              unsigned char *p,
 879                              int (*put_cb) (const SSL_CIPHER *,
 880                                             unsigned char *));
 881 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
 882                                              STACK_OF(SSL_CIPHER) **pref,
 883                                              STACK_OF(SSL_CIPHER) **sorted,
 884                                              const char *rule_str);
 885 void ssl_update_cache(SSL *s, int mode);
 886 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
 887                        const EVP_MD **md, int *mac_pkey_type,
 888                        int *mac_secret_size, SSL_COMP **comp);
 889 int ssl_get_handshake_digest(int i, long *mask, const EVP_MD **md);
 890 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
 891 int ssl_undefined_function(SSL *s);
 892 int ssl_undefined_void_function(void);
 893 int ssl_undefined_const_function(const SSL *s);
 894 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s);
 895 X509 *ssl_get_server_send_cert(const SSL *);
 896 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd);
 897 int ssl_cert_type(X509 *x, EVP_PKEY *pkey);
 898 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher);
 899 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
 900 int ssl_verify_alarm_type(long type);
 901 void ssl_load_ciphers(void);
 902 int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, int len);
 903
 904 int ssl2_enc_init(SSL *s, int client);
 905 int ssl2_generate_key_material(SSL *s);
 906 int ssl2_enc(SSL *s, int send_data);
 907 void ssl2_mac(SSL *s, unsigned char *mac, int send_data);
 908 const SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p);
 909 int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
 910 int ssl2_part_read(SSL *s, unsigned long f, int i);
 911 int ssl2_do_write(SSL *s);
 912 int ssl2_set_certificate(SSL *s, int type, int len,
 913                          const unsigned char *data);
 914 void ssl2_return_error(SSL *s, int reason);
 915 void ssl2_write_error(SSL *s);
 916 int ssl2_num_ciphers(void);
 917 const SSL_CIPHER *ssl2_get_cipher(unsigned int u);
 918 int ssl2_new(SSL *s);
 919 void ssl2_free(SSL *s);
 920 int ssl2_accept(SSL *s);
 921 int ssl2_connect(SSL *s);
 922 int ssl2_read(SSL *s, void *buf, int len);
 923 int ssl2_peek(SSL *s, void *buf, int len);
 924 int ssl2_write(SSL *s, const void *buf, int len);
 925 int ssl2_shutdown(SSL *s);
 926 void ssl2_clear(SSL *s);
 927 long ssl2_ctrl(SSL *s, int cmd, long larg, void *parg);
 928 long ssl2_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
 929 long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
 930 long ssl2_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
 931 int ssl2_pending(const SSL *s);
 932 long ssl2_default_timeout(void);
 933
 934 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
 935 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
 936 void ssl3_init_finished_mac(SSL *s);
 937 int ssl3_send_server_certificate(SSL *s);
 938 int ssl3_send_newsession_ticket(SSL *s);
 939 int ssl3_send_cert_status(SSL *s);
 940 int ssl3_get_finished(SSL *s, int state_a, int state_b);
 941 int ssl3_setup_key_block(SSL *s);
 942 int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b);
 943 int ssl3_change_cipher_state(SSL *s, int which);
 944 void ssl3_cleanup_key_block(SSL *s);
 945 int ssl3_do_write(SSL *s, int type);
 946 int ssl3_send_alert(SSL *s, int level, int desc);
 947 int ssl3_generate_master_secret(SSL *s, unsigned char *out,
 948                                 unsigned char *p, int len);
 949 int ssl3_get_req_cert_type(SSL *s, unsigned char *p);
 950 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
 951 int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen);
 952 int ssl3_num_ciphers(void);
 953 const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
 954 int ssl3_renegotiate(SSL *ssl);
 955 int ssl3_renegotiate_check(SSL *ssl);
 956 int ssl3_dispatch_alert(SSL *s);
 957 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
 958 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
 959 int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,
 960                           unsigned char *p);
 961 int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
 962 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
 963 int ssl3_enc(SSL *s, int send_data);
 964 int n_ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
 965 void ssl3_free_digest_list(SSL *s);
 966 unsigned long ssl3_output_cert_chain(SSL *s, X509 *x);
 967 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt,
 968                                STACK_OF(SSL_CIPHER) *srvr);
 969 int ssl3_setup_buffers(SSL *s);
 970 int ssl3_setup_read_buffer(SSL *s);
 971 int ssl3_setup_write_buffer(SSL *s);
 972 int ssl3_release_read_buffer(SSL *s);
 973 int ssl3_release_write_buffer(SSL *s);
 974 int ssl3_digest_cached_records(SSL *s);
 975 int ssl3_new(SSL *s);
 976 void ssl3_free(SSL *s);
 977 int ssl3_accept(SSL *s);
 978 int ssl3_connect(SSL *s);
 979 int ssl3_read(SSL *s, void *buf, int len);
 980 int ssl3_peek(SSL *s, void *buf, int len);
 981 int ssl3_write(SSL *s, const void *buf, int len);
 982 int ssl3_shutdown(SSL *s);
 983 void ssl3_clear(SSL *s);
 984 long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
 985 long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
 986 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
 987 long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
 988 int ssl3_pending(const SSL *s);
 989
 990 void ssl3_record_sequence_update(unsigned char *seq);
 991 int ssl3_do_change_cipher_spec(SSL *ssl);
 992 long ssl3_default_timeout(void);
 993
 994 int ssl23_num_ciphers(void);
 995 const SSL_CIPHER *ssl23_get_cipher(unsigned int u);
 996 int ssl23_read(SSL *s, void *buf, int len);
 997 int ssl23_peek(SSL *s, void *buf, int len);
 998 int ssl23_write(SSL *s, const void *buf, int len);
 999 int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
1000 const SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p);
1001 long ssl23_default_timeout(void);
1002
1003 long tls1_default_timeout(void);
1004 int dtls1_do_write(SSL *s, int type);
1005 int ssl3_read_n(SSL *s, int n, int max, int extend);
1006 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
1007 int ssl3_do_compress(SSL *ssl);
1008 int ssl3_do_uncompress(SSL *ssl);
1009 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
1010                        unsigned int len);
1011 unsigned char *dtls1_set_message_header(SSL *s,
1012                                         unsigned char *p, unsigned char mt,
1013                                         unsigned long len,
1014                                         unsigned long frag_off,
1015                                         unsigned long frag_len);
1016
1017 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
1018 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len);
1019
1020 int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
1021 int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen);
1022 unsigned long dtls1_output_cert_chain(SSL *s, X509 *x);
1023 int dtls1_read_failed(SSL *s, int code);
1024 int dtls1_buffer_message(SSL *s, int ccs);
1025 int dtls1_retransmit_message(SSL *s, unsigned short seq,
1026                              unsigned long frag_off, int *found);
1027 int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
1028 int dtls1_retransmit_buffered_messages(SSL *s);
1029 void dtls1_clear_record_buffer(SSL *s);
1030 void dtls1_get_message_header(unsigned char *data,
1031                               struct hm_header_st *msg_hdr);
1032 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
1033 void dtls1_reset_seq_numbers(SSL *s, int rw);
1034 long dtls1_default_timeout(void);
1035 struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
1036 int dtls1_check_timeout_num(SSL *s);
1037 int dtls1_handle_timeout(SSL *s);
1038 const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
1039 void dtls1_start_timer(SSL *s);
1040 void dtls1_stop_timer(SSL *s);
1041 int dtls1_is_timer_expired(SSL *s);
1042 void dtls1_double_timeout(SSL *s);
1043 int dtls1_send_newsession_ticket(SSL *s);
1044 unsigned int dtls1_min_mtu(SSL *s);
1045 unsigned int dtls1_link_min_mtu(void);
1046 void dtls1_hm_fragment_free(hm_fragment *frag);
1047
1048 /* some client-only functions */
1049 int ssl3_client_hello(SSL *s);
1050 int ssl3_get_server_hello(SSL *s);
1051 int ssl3_get_certificate_request(SSL *s);
1052 int ssl3_get_new_session_ticket(SSL *s);
1053 int ssl3_get_cert_status(SSL *s);
1054 int ssl3_get_server_done(SSL *s);
1055 int ssl3_send_client_verify(SSL *s);
1056 int ssl3_send_client_certificate(SSL *s);
1057 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
1058 int ssl3_send_client_key_exchange(SSL *s);
1059 int ssl3_get_key_exchange(SSL *s);
1060 int ssl3_get_server_certificate(SSL *s);
1061 int ssl3_check_cert_and_algorithm(SSL *s);
1062 #  ifndef OPENSSL_NO_TLSEXT
1063 #   ifndef OPENSSL_NO_NEXTPROTONEG
1064 int ssl3_send_next_proto(SSL *s);
1065 #   endif
1066 #  endif
1067
1068 int dtls1_client_hello(SSL *s);
1069 int dtls1_send_client_certificate(SSL *s);
1070 int dtls1_send_client_key_exchange(SSL *s);
1071 int dtls1_send_client_verify(SSL *s);
1072
1073 /* some server-only functions */
1074 int ssl3_get_client_hello(SSL *s);
1075 int ssl3_send_server_hello(SSL *s);
1076 int ssl3_send_hello_request(SSL *s);
1077 int ssl3_send_server_key_exchange(SSL *s);
1078 int ssl3_send_certificate_request(SSL *s);
1079 int ssl3_send_server_done(SSL *s);
1080 int ssl3_check_client_hello(SSL *s);
1081 int ssl3_get_client_certificate(SSL *s);
1082 int ssl3_get_client_key_exchange(SSL *s);
1083 int ssl3_get_cert_verify(SSL *s);
1084 #  ifndef OPENSSL_NO_NEXTPROTONEG
1085 int ssl3_get_next_proto(SSL *s);
1086 #  endif
1087
1088 int dtls1_send_hello_request(SSL *s);
1089 int dtls1_send_server_hello(SSL *s);
1090 int dtls1_send_server_certificate(SSL *s);
1091 int dtls1_send_server_key_exchange(SSL *s);
1092 int dtls1_send_certificate_request(SSL *s);
1093 int dtls1_send_server_done(SSL *s);
1094
1095 int ssl23_accept(SSL *s);
1096 int ssl23_connect(SSL *s);
1097 int ssl23_read_bytes(SSL *s, int n);
1098 int ssl23_write_bytes(SSL *s);
1099
1100 int tls1_new(SSL *s);
1101 void tls1_free(SSL *s);
1102 void tls1_clear(SSL *s);
1103 long tls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1104 long tls1_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
1105
1106 int dtls1_new(SSL *s);
1107 int dtls1_accept(SSL *s);
1108 int dtls1_connect(SSL *s);
1109 void dtls1_free(SSL *s);
1110 void dtls1_clear(SSL *s);
1111 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1112 int dtls1_shutdown(SSL *s);
1113
1114 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
1115 int dtls1_get_record(SSL *s);
1116 int do_dtls1_write(SSL *s, int type, const unsigned char *buf,
1117                    unsigned int len, int create_empty_fragement);
1118 int dtls1_dispatch_alert(SSL *s);
1119 int dtls1_enc(SSL *s, int snd);
1120
1121 int ssl_init_wbio_buffer(SSL *s, int push);
1122 void ssl_free_wbio_buffer(SSL *s);
1123
1124 int tls1_change_cipher_state(SSL *s, int which);
1125 int tls1_setup_key_block(SSL *s);
1126 int tls1_enc(SSL *s, int snd);
1127 int tls1_final_finish_mac(SSL *s,
1128                           const char *str, int slen, unsigned char *p);
1129 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
1130 int tls1_mac(SSL *ssl, unsigned char *md, int snd);
1131 int tls1_generate_master_secret(SSL *s, unsigned char *out,
1132                                 unsigned char *p, int len);
1133 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1134                                 const char *label, size_t llen,
1135                                 const unsigned char *p, size_t plen,
1136                                 int use_context);
1137 int tls1_alert_code(int code);
1138 int ssl3_alert_code(int code);
1139 int ssl_ok(SSL *s);
1140
1141 #  ifndef OPENSSL_NO_ECDH
1142 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
1143 #  endif
1144
1145 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
1146
1147 #  ifndef OPENSSL_NO_EC
1148 int tls1_ec_curve_id2nid(int curve_id);
1149 int tls1_ec_nid2curve_id(int nid);
1150 #  endif                        /* OPENSSL_NO_EC */
1151
1152 #  ifndef OPENSSL_NO_TLSEXT
1153 unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *buf,
1154                                           unsigned char *limit);
1155 unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *buf,
1156                                           unsigned char *limit);
1157 int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **data,
1158                                  unsigned char *limit, int *al);
1159 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data,
1160                                  unsigned char *d, int n, int *al);
1161 int ssl_prepare_clienthello_tlsext(SSL *s);
1162 int ssl_prepare_serverhello_tlsext(SSL *s);
1163 int ssl_check_clienthello_tlsext_early(SSL *s);
1164 int ssl_check_clienthello_tlsext_late(SSL *s);
1165 int ssl_check_serverhello_tlsext(SSL *s);
1166
1167 #   ifndef OPENSSL_NO_HEARTBEATS
1168 int tls1_heartbeat(SSL *s);
1169 int dtls1_heartbeat(SSL *s);
1170 int tls1_process_heartbeat(SSL *s);
1171 int dtls1_process_heartbeat(SSL *s);
1172 #   endif
1173
1174 #   ifdef OPENSSL_NO_SHA256
1175 #    define tlsext_tick_md  EVP_sha1
1176 #   else
1177 #    define tlsext_tick_md  EVP_sha256
1178 #   endif
1179 int tls1_process_ticket(SSL *s, unsigned char *session_id, int len,
1180                         const unsigned char *limit, SSL_SESSION **ret);
1181
1182 int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
1183                          const EVP_MD *md);
1184 int tls12_get_sigid(const EVP_PKEY *pk);
1185 const EVP_MD *tls12_get_hash(unsigned char hash_alg);
1186
1187 #  endif
1188 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
1189 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
1190 int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1191                                         int maxlen);
1192 int ssl_parse_serverhello_renegotiate_ext(SSL *s, unsigned char *d, int len,
1193                                           int *al);
1194 int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1195                                         int maxlen);
1196 int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len,
1197                                           int *al);
1198 long ssl_get_algorithm2(SSL *s);
1199 int tls1_process_sigalgs(SSL *s, const unsigned char *data, int dsize);
1200 int tls12_get_req_sig_algs(SSL *s, unsigned char *p);
1201
1202 int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
1203                                      int maxlen);
1204 int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len,
1205                                        int *al);
1206 int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
1207                                      int maxlen);
1208 int ssl_parse_serverhello_use_srtp_ext(SSL *s, unsigned char *d, int len,
1209                                        int *al);
1210
1211 /* s3_cbc.c */
1212 void ssl3_cbc_copy_mac(unsigned char *out,
1213                        const SSL3_RECORD *rec,
1214                        unsigned md_size, unsigned orig_len);
1215 int ssl3_cbc_remove_padding(const SSL *s,
1216                             SSL3_RECORD *rec,
1217                             unsigned block_size, unsigned mac_size);
1218 int tls1_cbc_remove_padding(const SSL *s,
1219                             SSL3_RECORD *rec,
1220                             unsigned block_size, unsigned mac_size);
1221 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
1222 int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
1223                            unsigned char *md_out,
1224                            size_t *md_out_size,
1225                            const unsigned char header[13],
1226                            const unsigned char *data,
1227                            size_t data_plus_mac_size,
1228                            size_t data_plus_mac_plus_padding_size,
1229                            const unsigned char *mac_secret,
1230                            unsigned mac_secret_length, char is_sslv3);
1231
1232 void tls_fips_digest_extra(const EVP_CIPHER_CTX *cipher_ctx,
1233                            EVP_MD_CTX *mac_ctx, const unsigned char *data,
1234                            size_t data_len, size_t orig_len);
1235
1236 int srp_verify_server_param(SSL *s, int *al);
1237
1238 # else
1239
1240 #  define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
1241 #  define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
1242 #  define tls1_process_heartbeat SSL_test_functions()->p_tls1_process_heartbeat
1243 #  define dtls1_process_heartbeat SSL_test_functions()->p_dtls1_process_heartbeat
1244
1245 # endif
1246 #endif