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 #define SSL_kRSA                0x00000001L /* RSA key exchange */
 292 #define SSL_kDHr                0x00000002L /* DH cert, RSA CA cert */ /* no such ciphersuites supported! */
 293 #define SSL_kDHd                0x00000004L /* DH cert, DSA CA cert */ /* no such ciphersuite supported! */
 294 #define SSL_kEDH                0x00000008L /* tmp DH key no DH cert */
 295 #define SSL_kKRB5               0x00000010L /* Kerberos5 key exchange */
 296 #define SSL_kECDHr              0x00000020L /* ECDH cert, RSA CA cert */
 297 #define SSL_kECDHe              0x00000040L /* ECDH cert, ECDSA CA cert */
 298 #define SSL_kEECDH              0x00000080L /* ephemeral ECDH */
 299 #define SSL_kPSK                0x00000100L /* PSK */
 300 #define SSL_kGOST       0x00000200L /* GOST key exchange */
 301 #define SSL_kSRP        0x00000400L /* SRP */
 302 
 303 /* Bits for algorithm_auth (server authentication) */
 304 #define SSL_aRSA                0x00000001L /* RSA auth */
 305 #define SSL_aDSS                0x00000002L /* DSS auth */
 306 #define SSL_aNULL               0x00000004L /* no auth (i.e. use ADH or AECDH) */
 307 #define SSL_aDH                 0x00000008L /* Fixed DH auth (kDHd or kDHr) */ /* no such ciphersuites supported! */
 308 #define SSL_aECDH               0x00000010L /* Fixed ECDH auth (kECDHe or kECDHr) */
 309 #define SSL_aKRB5               0x00000020L /* KRB5 auth */
 310 #define SSL_aECDSA              0x00000040L /* ECDSA auth*/
 311 #define SSL_aPSK                0x00000080L /* PSK auth */
 312 #define SSL_aGOST94                             0x00000100L /* GOST R 34.10-94 signature auth */
 313 #define SSL_aGOST01                     0x00000200L /* GOST R 34.10-2001 signature auth */
 314 
 315 
 316 /* Bits for algorithm_enc (symmetric encryption) */
 317 #define SSL_DES                 0x00000001L
 318 #define SSL_3DES                0x00000002L
 319 #define SSL_RC4                 0x00000004L
 320 #define SSL_RC2                 0x00000008L
 321 #define SSL_IDEA                0x00000010L
 322 #define SSL_eNULL               0x00000020L
 323 #define SSL_AES128              0x00000040L
 324 #define SSL_AES256              0x00000080L
 325 #define SSL_CAMELLIA128         0x00000100L
 326 #define SSL_CAMELLIA256         0x00000200L
 327 #define SSL_eGOST2814789CNT     0x00000400L
 328 #define SSL_SEED                0x00000800L
 329 #define SSL_AES128GCM           0x00001000L
 330 #define SSL_AES256GCM           0x00002000L
 331 
 332 #define SSL_AES                 (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM)
 333 #define SSL_CAMELLIA            (SSL_CAMELLIA128|SSL_CAMELLIA256)
 334 
 335 
 336 /* Bits for algorithm_mac (symmetric authentication) */
 337 
 338 #define SSL_MD5                 0x00000001L
 339 #define SSL_SHA1                0x00000002L
 340 #define SSL_GOST94      0x00000004L
 341 #define SSL_GOST89MAC   0x00000008L
 342 #define SSL_SHA256              0x00000010L
 343 #define SSL_SHA384              0x00000020L
 344 /* Not a real MAC, just an indication it is part of cipher */
 345 #define SSL_AEAD                0x00000040L
 346 
 347 /* Bits for algorithm_ssl (protocol version) */
 348 #define SSL_SSLV2               0x00000001L
 349 #define SSL_SSLV3               0x00000002L
 350 #define SSL_TLSV1               SSL_SSLV3       /* for now */
 351 #define SSL_TLSV1_2             0x00000004L
 352 
 353 
 354 /* Bits for algorithm2 (handshake digests and other extra flags) */
 355 
 356 #define SSL_HANDSHAKE_MAC_MD5 0x10
 357 #define SSL_HANDSHAKE_MAC_SHA 0x20
 358 #define SSL_HANDSHAKE_MAC_GOST94 0x40
 359 #define SSL_HANDSHAKE_MAC_SHA256 0x80
 360 #define SSL_HANDSHAKE_MAC_SHA384 0x100
 361 #define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA)
 362 
 363 /* When adding new digest in the ssl_ciph.c and increment SSM_MD_NUM_IDX
 364  * make sure to update this constant too */
 365 #define SSL_MAX_DIGEST 6
 366 
 367 #define TLS1_PRF_DGST_MASK      (0xff << TLS1_PRF_DGST_SHIFT)
 368 
 369 #define TLS1_PRF_DGST_SHIFT 10
 370 #define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT)
 371 #define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT)
 372 #define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT)
 373 #define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT)
 374 #define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT)
 375 #define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1)
 376 
 377 /* Stream MAC for GOST ciphersuites from cryptopro draft
 378  * (currently this also goes into algorithm2) */
 379 #define TLS1_STREAM_MAC 0x04
 380 
 381 
 382 
 383 /*
 384  * Export and cipher strength information. For each cipher we have to decide
 385  * whether it is exportable or not. This information is likely to change
 386  * over time, since the export control rules are no static technical issue.
 387  *
 388  * Independent of the export flag the cipher strength is sorted into classes.
 389  * SSL_EXP40 was denoting the 40bit US export limit of past times, which now
 390  * is at 56bit (SSL_EXP56). If the exportable cipher class is going to change
 391  * again (eg. to 64bit) the use of "SSL_EXP*" becomes blurred even more,
 392  * since SSL_EXP64 could be similar to SSL_LOW.
 393  * For this reason SSL_MICRO and SSL_MINI macros are included to widen the
 394  * namespace of SSL_LOW-SSL_HIGH to lower values. As development of speed
 395  * and ciphers goes, another extension to SSL_SUPER and/or SSL_ULTRA would
 396  * be possible.
 397  */
 398 #define SSL_EXP_MASK            0x00000003L
 399 #define SSL_STRONG_MASK         0x000001fcL
 400 
 401 #define SSL_NOT_EXP             0x00000001L
 402 #define SSL_EXPORT              0x00000002L
 403 
 404 #define SSL_STRONG_NONE         0x00000004L
 405 #define SSL_EXP40               0x00000008L
 406 #define SSL_MICRO               (SSL_EXP40)
 407 #define SSL_EXP56               0x00000010L
 408 #define SSL_MINI                (SSL_EXP56)
 409 #define SSL_LOW                 0x00000020L
 410 #define SSL_MEDIUM              0x00000040L
 411 #define SSL_HIGH                0x00000080L
 412 #define SSL_FIPS                0x00000100L
 413 
 414 /* we have used 000001ff - 23 bits left to go */
 415 
 416 /*
 417  * Macros to check the export status and cipher strength for export ciphers.
 418  * Even though the macros for EXPORT and EXPORT40/56 have similar names,
 419  * their meaning is different:
 420  * *_EXPORT macros check the 'exportable' status.
 421  * *_EXPORT40/56 macros are used to check whether a certain cipher strength
 422  *          is given.
 423  * Since the SSL_IS_EXPORT* and SSL_EXPORT* macros depend on the correct
 424  * algorithm structure element to be passed (algorithms, algo_strength) and no
 425  * typechecking can be done as they are all of type unsigned long, their
 426  * direct usage is discouraged.
 427  * Use the SSL_C_* macros instead.
 428  */
 429 #define SSL_IS_EXPORT(a)        ((a)&SSL_EXPORT)
 430 #define SSL_IS_EXPORT56(a)      ((a)&SSL_EXP56)
 431 #define SSL_IS_EXPORT40(a)      ((a)&SSL_EXP40)
 432 #define SSL_C_IS_EXPORT(c)      SSL_IS_EXPORT((c)->algo_strength)
 433 #define SSL_C_IS_EXPORT56(c)    SSL_IS_EXPORT56((c)->algo_strength)
 434 #define SSL_C_IS_EXPORT40(c)    SSL_IS_EXPORT40((c)->algo_strength)
 435 
 436 #define SSL_EXPORT_KEYLENGTH(a,s)       (SSL_IS_EXPORT40(s) ? 5 : \
 437                                  (a) == SSL_DES ? 8 : 7)
 438 #define SSL_EXPORT_PKEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 512 : 1024)
 439 #define SSL_C_EXPORT_KEYLENGTH(c)       SSL_EXPORT_KEYLENGTH((c)->algorithm_enc, \
 440                                 (c)->algo_strength)
 441 #define SSL_C_EXPORT_PKEYLENGTH(c)      SSL_EXPORT_PKEYLENGTH((c)->algo_strength)
 442 
 443 
 444 
 445 
 446 /* Mostly for SSLv3 */
 447 #define SSL_PKEY_RSA_ENC        0
 448 #define SSL_PKEY_RSA_SIGN       1
 449 #define SSL_PKEY_DSA_SIGN       2
 450 #define SSL_PKEY_DH_RSA         3
 451 #define SSL_PKEY_DH_DSA         4
 452 #define SSL_PKEY_ECC            5
 453 #define SSL_PKEY_GOST94         6
 454 #define SSL_PKEY_GOST01         7
 455 #define SSL_PKEY_NUM            8
 456 
 457 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
 458  *          <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
 459  * SSL_kDH  <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
 460  * SSL_kEDH <- RSA_ENC | RSA_SIGN | DSA_SIGN
 461  * SSL_aRSA <- RSA_ENC | RSA_SIGN
 462  * SSL_aDSS <- DSA_SIGN
 463  */
 464 
 465 /*
 466 #define CERT_INVALID            0
 467 #define CERT_PUBLIC_KEY         1
 468 #define CERT_PRIVATE_KEY        2
 469 */
 470 
 471 #ifndef OPENSSL_NO_EC
 472 /* From ECC-TLS draft, used in encoding the curve type in 
 473  * ECParameters
 474  */
 475 #define EXPLICIT_PRIME_CURVE_TYPE  1   
 476 #define EXPLICIT_CHAR2_CURVE_TYPE  2
 477 #define NAMED_CURVE_TYPE           3
 478 #endif  /* OPENSSL_NO_EC */
 479 
 480 typedef struct cert_pkey_st
 481         {
 482         X509 *x509;
 483         EVP_PKEY *privatekey;
 484         /* Digest to use when signing */
 485         const EVP_MD *digest;
 486         } CERT_PKEY;
 487 
 488 typedef struct cert_st
 489         {
 490         /* Current active set */
 491         CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array
 492                          * Probably it would make more sense to store
 493                          * an index, not a pointer. */
 494  
 495         /* The following masks are for the key and auth
 496          * algorithms that are supported by the certs below */
 497         int valid;
 498         unsigned long mask_k;
 499         unsigned long mask_a;
 500         unsigned long export_mask_k;
 501         unsigned long export_mask_a;
 502 #ifndef OPENSSL_NO_RSA
 503         RSA *rsa_tmp;
 504         RSA *(*rsa_tmp_cb)(SSL *ssl,int is_export,int keysize);
 505 #endif
 506 #ifndef OPENSSL_NO_DH
 507         DH *dh_tmp;
 508         DH *(*dh_tmp_cb)(SSL *ssl,int is_export,int keysize);
 509 #endif
 510 #ifndef OPENSSL_NO_ECDH
 511         EC_KEY *ecdh_tmp;
 512         /* Callback for generating ephemeral ECDH keys */
 513         EC_KEY *(*ecdh_tmp_cb)(SSL *ssl,int is_export,int keysize);
 514 #endif
 515 
 516         CERT_PKEY pkeys[SSL_PKEY_NUM];
 517 
 518         int references; /* >1 only if SSL_copy_session_id is used */
 519         } CERT;
 520 
 521 
 522 typedef struct sess_cert_st
 523         {
 524         STACK_OF(X509) *cert_chain; /* as received from peer (not for SSL2) */
 525 
 526         /* The 'peer_...' members are used only by clients. */
 527         int peer_cert_type;
 528 
 529         CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */
 530         CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
 531         /* Obviously we don't have the private keys of these,
 532          * so maybe we shouldn't even use the CERT_PKEY type here. */
 533 
 534 #ifndef OPENSSL_NO_RSA
 535         RSA *peer_rsa_tmp; /* not used for SSL 2 */
 536 #endif
 537 #ifndef OPENSSL_NO_DH
 538         DH *peer_dh_tmp; /* not used for SSL 2 */
 539 #endif
 540 #ifndef OPENSSL_NO_ECDH
 541         EC_KEY *peer_ecdh_tmp;
 542 #endif
 543 
 544         int references; /* actually always 1 at the moment */
 545         } SESS_CERT;
 546 
 547 
 548 /*#define MAC_DEBUG     */
 549 
 550 /*#define ERR_DEBUG     */
 551 /*#define ABORT_DEBUG   */
 552 /*#define PKT_DEBUG 1   */
 553 /*#define DES_DEBUG     */
 554 /*#define DES_OFB_DEBUG */
 555 /*#define SSL_DEBUG     */
 556 /*#define RSA_DEBUG     */ 
 557 /*#define IDEA_DEBUG    */ 
 558 
 559 #define FP_ICC  (int (*)(const void *,const void *))
 560 #define ssl_put_cipher_by_char(ssl,ciph,ptr) \
 561                 ((ssl)->method->put_cipher_by_char((ciph),(ptr)))
 562 #define ssl_get_cipher_by_char(ssl,ptr) \
 563                 ((ssl)->method->get_cipher_by_char(ptr))
 564 
 565 /* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff
 566  * It is a bit of a mess of functions, but hell, think of it as
 567  * an opaque structure :-) */
 568 typedef struct ssl3_enc_method
 569         {
 570         int (*enc)(SSL *, int);
 571         int (*mac)(SSL *, unsigned char *, int);
 572         int (*setup_key_block)(SSL *);
 573         int (*generate_master_secret)(SSL *, unsigned char *, unsigned char *, int);
 574         int (*change_cipher_state)(SSL *, int);
 575         int (*final_finish_mac)(SSL *,  const char *, int, unsigned char *);
 576         int finish_mac_length;
 577         int (*cert_verify_mac)(SSL *, int, unsigned char *);
 578         const char *client_finished_label;
 579         int client_finished_label_len;
 580         const char *server_finished_label;
 581         int server_finished_label_len;
 582         int (*alert_value)(int);
 583         int (*export_keying_material)(SSL *, unsigned char *, size_t,
 584                                       const char *, size_t,
 585                                       const unsigned char *, size_t,
 586                                       int use_context);
 587         } SSL3_ENC_METHOD;
 588 
 589 #ifndef OPENSSL_NO_COMP
 590 /* Used for holding the relevant compression methods loaded into SSL_CTX */
 591 typedef struct ssl3_comp_st
 592         {
 593         int comp_id;    /* The identifier byte for this compression type */
 594         char *name;     /* Text name used for the compression type */
 595         COMP_METHOD *method; /* The method :-) */
 596         } SSL3_COMP;
 597 #endif
 598 
 599 #ifndef OPENSSL_NO_BUF_FREELISTS
 600 typedef struct ssl3_buf_freelist_st
 601         {
 602         size_t chunklen;
 603         unsigned int len;
 604         struct ssl3_buf_freelist_entry_st *head;
 605         } SSL3_BUF_FREELIST;
 606 
 607 typedef struct ssl3_buf_freelist_entry_st
 608         {
 609         struct ssl3_buf_freelist_entry_st *next;
 610         } SSL3_BUF_FREELIST_ENTRY;
 611 #endif
 612 
 613 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
 614 OPENSSL_EXTERN const SSL_CIPHER ssl2_ciphers[];
 615 OPENSSL_EXTERN SSL_CIPHER ssl3_ciphers[];
 616 
 617 
 618 SSL_METHOD *ssl_bad_method(int ver);
 619 
 620 extern SSL3_ENC_METHOD TLSv1_enc_data;
 621 extern SSL3_ENC_METHOD SSLv3_enc_data;
 622 extern SSL3_ENC_METHOD DTLSv1_enc_data;
 623 
 624 #define SSL_IS_DTLS(s) (s->method->version == DTLS1_VERSION)
 625 
 626 #define IMPLEMENT_tls_meth_func(version, func_name, s_accept, s_connect, \
 627                                 s_get_meth) \
 628 const SSL_METHOD *func_name(void)  \
 629         { \
 630         static const SSL_METHOD func_name##_data= { \
 631                 version, \
 632                 tls1_new, \
 633                 tls1_clear, \
 634                 tls1_free, \
 635                 s_accept, \
 636                 s_connect, \
 637                 ssl3_read, \
 638                 ssl3_peek, \
 639                 ssl3_write, \
 640                 ssl3_shutdown, \
 641                 ssl3_renegotiate, \
 642                 ssl3_renegotiate_check, \
 643                 ssl3_get_message, \
 644                 ssl3_read_bytes, \
 645                 ssl3_write_bytes, \
 646                 ssl3_dispatch_alert, \
 647                 ssl3_ctrl, \
 648                 ssl3_ctx_ctrl, \
 649                 ssl3_get_cipher_by_char, \
 650                 ssl3_put_cipher_by_char, \
 651                 ssl3_pending, \
 652                 ssl3_num_ciphers, \
 653                 ssl3_get_cipher, \
 654                 s_get_meth, \
 655                 tls1_default_timeout, \
 656                 &TLSv1_enc_data, \
 657                 ssl_undefined_void_function, \
 658                 ssl3_callback_ctrl, \
 659                 ssl3_ctx_callback_ctrl, \
 660         }; \
 661         return &func_name##_data; \
 662         }
 663 
 664 #define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 665 const SSL_METHOD *func_name(void)  \
 666         { \
 667         static const SSL_METHOD func_name##_data= { \
 668                 SSL3_VERSION, \
 669                 ssl3_new, \
 670                 ssl3_clear, \
 671                 ssl3_free, \
 672                 s_accept, \
 673                 s_connect, \
 674                 ssl3_read, \
 675                 ssl3_peek, \
 676                 ssl3_write, \
 677                 ssl3_shutdown, \
 678                 ssl3_renegotiate, \
 679                 ssl3_renegotiate_check, \
 680                 ssl3_get_message, \
 681                 ssl3_read_bytes, \
 682                 ssl3_write_bytes, \
 683                 ssl3_dispatch_alert, \
 684                 ssl3_ctrl, \
 685                 ssl3_ctx_ctrl, \
 686                 ssl3_get_cipher_by_char, \
 687                 ssl3_put_cipher_by_char, \
 688                 ssl3_pending, \
 689                 ssl3_num_ciphers, \
 690                 ssl3_get_cipher, \
 691                 s_get_meth, \
 692                 ssl3_default_timeout, \
 693                 &SSLv3_enc_data, \
 694                 ssl_undefined_void_function, \
 695                 ssl3_callback_ctrl, \
 696                 ssl3_ctx_callback_ctrl, \
 697         }; \
 698         return &func_name##_data; \
 699         }
 700 
 701 #define IMPLEMENT_ssl23_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 702 const SSL_METHOD *func_name(void)  \
 703         { \
 704         static const SSL_METHOD func_name##_data= { \
 705         TLS1_2_VERSION, \
 706         tls1_new, \
 707         tls1_clear, \
 708         tls1_free, \
 709         s_accept, \
 710         s_connect, \
 711         ssl23_read, \
 712         ssl23_peek, \
 713         ssl23_write, \
 714         ssl_undefined_function, \
 715         ssl_undefined_function, \
 716         ssl_ok, \
 717         ssl3_get_message, \
 718         ssl3_read_bytes, \
 719         ssl3_write_bytes, \
 720         ssl3_dispatch_alert, \
 721         ssl3_ctrl, \
 722         ssl3_ctx_ctrl, \
 723         ssl23_get_cipher_by_char, \
 724         ssl23_put_cipher_by_char, \
 725         ssl_undefined_const_function, \
 726         ssl23_num_ciphers, \
 727         ssl23_get_cipher, \
 728         s_get_meth, \
 729         ssl23_default_timeout, \
 730         &ssl3_undef_enc_method, \
 731         ssl_undefined_void_function, \
 732         ssl3_callback_ctrl, \
 733         ssl3_ctx_callback_ctrl, \
 734         }; \
 735         return &func_name##_data; \
 736         }
 737 
 738 #define IMPLEMENT_ssl2_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 739 const SSL_METHOD *func_name(void)  \
 740         { \
 741         static const SSL_METHOD func_name##_data= { \
 742                 SSL2_VERSION, \
 743                 ssl2_new,       /* local */ \
 744                 ssl2_clear,     /* local */ \
 745                 ssl2_free,      /* local */ \
 746                 s_accept, \
 747                 s_connect, \
 748                 ssl2_read, \
 749                 ssl2_peek, \
 750                 ssl2_write, \
 751                 ssl2_shutdown, \
 752                 ssl_ok, /* NULL - renegotiate */ \
 753                 ssl_ok, /* NULL - check renegotiate */ \
 754                 NULL, /* NULL - ssl_get_message */ \
 755                 NULL, /* NULL - ssl_get_record */ \
 756                 NULL, /* NULL - ssl_write_bytes */ \
 757                 NULL, /* NULL - dispatch_alert */ \
 758                 ssl2_ctrl,      /* local */ \
 759                 ssl2_ctx_ctrl,  /* local */ \
 760                 ssl2_get_cipher_by_char, \
 761                 ssl2_put_cipher_by_char, \
 762                 ssl2_pending, \
 763                 ssl2_num_ciphers, \
 764                 ssl2_get_cipher, \
 765                 s_get_meth, \
 766                 ssl2_default_timeout, \
 767                 &ssl3_undef_enc_method, \
 768                 ssl_undefined_void_function, \
 769                 ssl2_callback_ctrl,     /* local */ \
 770                 ssl2_ctx_callback_ctrl, /* local */ \
 771         }; \
 772         return &func_name##_data; \
 773         }
 774 
 775 #define IMPLEMENT_dtls1_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 776 const SSL_METHOD *func_name(void)  \
 777         { \
 778         static const SSL_METHOD func_name##_data= { \
 779                 DTLS1_VERSION, \
 780                 dtls1_new, \
 781                 dtls1_clear, \
 782                 dtls1_free, \
 783                 s_accept, \
 784                 s_connect, \
 785                 ssl3_read, \
 786                 ssl3_peek, \
 787                 ssl3_write, \
 788                 dtls1_shutdown, \
 789                 ssl3_renegotiate, \
 790                 ssl3_renegotiate_check, \
 791                 dtls1_get_message, \
 792                 dtls1_read_bytes, \
 793                 dtls1_write_app_data_bytes, \
 794                 dtls1_dispatch_alert, \
 795                 dtls1_ctrl, \
 796                 ssl3_ctx_ctrl, \
 797                 ssl3_get_cipher_by_char, \
 798                 ssl3_put_cipher_by_char, \
 799                 ssl3_pending, \
 800                 ssl3_num_ciphers, \
 801                 dtls1_get_cipher, \
 802                 s_get_meth, \
 803                 dtls1_default_timeout, \
 804                 &DTLSv1_enc_data, \
 805                 ssl_undefined_void_function, \
 806                 ssl3_callback_ctrl, \
 807                 ssl3_ctx_callback_ctrl, \
 808         }; \
 809         return &func_name##_data; \
 810         }
 811 
 812 void ssl_clear_cipher_ctx(SSL *s);
 813 int ssl_clear_bad_session(SSL *s);
 814 CERT *ssl_cert_new(void);
 815 CERT *ssl_cert_dup(CERT *cert);
 816 int ssl_cert_inst(CERT **o);
 817 void ssl_cert_free(CERT *c);
 818 SESS_CERT *ssl_sess_cert_new(void);
 819 void ssl_sess_cert_free(SESS_CERT *sc);
 820 int ssl_set_peer_cert_type(SESS_CERT *c, int type);
 821 int ssl_get_new_session(SSL *s, int session);
 822 int ssl_get_prev_session(SSL *s, unsigned char *session,int len, const unsigned char *limit);
 823 int ssl_cipher_id_cmp(const SSL_CIPHER *a,const SSL_CIPHER *b);
 824 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
 825                                   ssl_cipher_id);
 826 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
 827                         const SSL_CIPHER * const *bp);
 828 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
 829                                                STACK_OF(SSL_CIPHER) **skp);
 830 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
 831                              int (*put_cb)(const SSL_CIPHER *, unsigned char *));
 832 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
 833                                              STACK_OF(SSL_CIPHER) **pref,
 834                                              STACK_OF(SSL_CIPHER) **sorted,
 835                                              const char *rule_str);
 836 void ssl_update_cache(SSL *s, int mode);
 837 int ssl_cipher_get_evp(const SSL_SESSION *s,const EVP_CIPHER **enc,
 838                        const EVP_MD **md,int *mac_pkey_type,int *mac_secret_size, SSL_COMP **comp);
 839 int ssl_get_handshake_digest(int i,long *mask,const EVP_MD **md);                          
 840 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk);
 841 int ssl_undefined_function(SSL *s);
 842 int ssl_undefined_void_function(void);
 843 int ssl_undefined_const_function(const SSL *s);
 844 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s);
 845 X509 *ssl_get_server_send_cert(const SSL *);
 846 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *c, const EVP_MD **pmd);
 847 int ssl_cert_type(X509 *x,EVP_PKEY *pkey);
 848 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher);
 849 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
 850 int ssl_verify_alarm_type(long type);
 851 void ssl_load_ciphers(void);
 852 int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, int len);
 853 
 854 int ssl2_enc_init(SSL *s, int client);
 855 int ssl2_generate_key_material(SSL *s);
 856 void ssl2_enc(SSL *s,int send_data);
 857 void ssl2_mac(SSL *s,unsigned char *mac,int send_data);
 858 const SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p);
 859 int ssl2_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
 860 int ssl2_part_read(SSL *s, unsigned long f, int i);
 861 int ssl2_do_write(SSL *s);
 862 int ssl2_set_certificate(SSL *s, int type, int len, const unsigned char *data);
 863 void ssl2_return_error(SSL *s,int reason);
 864 void ssl2_write_error(SSL *s);
 865 int ssl2_num_ciphers(void);
 866 const SSL_CIPHER *ssl2_get_cipher(unsigned int u);
 867 int     ssl2_new(SSL *s);
 868 void    ssl2_free(SSL *s);
 869 int     ssl2_accept(SSL *s);
 870 int     ssl2_connect(SSL *s);
 871 int     ssl2_read(SSL *s, void *buf, int len);
 872 int     ssl2_peek(SSL *s, void *buf, int len);
 873 int     ssl2_write(SSL *s, const void *buf, int len);
 874 int     ssl2_shutdown(SSL *s);
 875 void    ssl2_clear(SSL *s);
 876 long    ssl2_ctrl(SSL *s,int cmd, long larg, void *parg);
 877 long    ssl2_ctx_ctrl(SSL_CTX *s,int cmd, long larg, void *parg);
 878 long    ssl2_callback_ctrl(SSL *s,int cmd, void (*fp)(void));
 879 long    ssl2_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)(void));
 880 int     ssl2_pending(const SSL *s);
 881 long    ssl2_default_timeout(void );
 882 
 883 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
 884 int ssl3_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
 885 void ssl3_init_finished_mac(SSL *s);
 886 int ssl3_send_server_certificate(SSL *s);
 887 int ssl3_send_newsession_ticket(SSL *s);
 888 int ssl3_send_cert_status(SSL *s);
 889 int ssl3_get_finished(SSL *s,int state_a,int state_b);
 890 int ssl3_setup_key_block(SSL *s);
 891 int ssl3_send_change_cipher_spec(SSL *s,int state_a,int state_b);
 892 int ssl3_change_cipher_state(SSL *s,int which);
 893 void ssl3_cleanup_key_block(SSL *s);
 894 int ssl3_do_write(SSL *s,int type);
 895 int ssl3_send_alert(SSL *s,int level, int desc);
 896 int ssl3_generate_master_secret(SSL *s, unsigned char *out,
 897         unsigned char *p, int len);
 898 int ssl3_get_req_cert_type(SSL *s,unsigned char *p);
 899 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
 900 int ssl3_send_finished(SSL *s, int a, int b, const char *sender,int slen);
 901 int ssl3_num_ciphers(void);
 902 const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
 903 int ssl3_renegotiate(SSL *ssl); 
 904 int ssl3_renegotiate_check(SSL *ssl); 
 905 int ssl3_dispatch_alert(SSL *s);
 906 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
 907 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
 908 int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,unsigned char *p);
 909 int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
 910 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
 911 int ssl3_enc(SSL *s, int send_data);
 912 int n_ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
 913 void ssl3_free_digest_list(SSL *s);
 914 unsigned long ssl3_output_cert_chain(SSL *s, X509 *x);
 915 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,STACK_OF(SSL_CIPHER) *clnt,
 916                                STACK_OF(SSL_CIPHER) *srvr);
 917 int     ssl3_setup_buffers(SSL *s);
 918 int     ssl3_setup_read_buffer(SSL *s);
 919 int     ssl3_setup_write_buffer(SSL *s);
 920 int     ssl3_release_read_buffer(SSL *s);
 921 int     ssl3_release_write_buffer(SSL *s);
 922 int     ssl3_digest_cached_records(SSL *s);
 923 int     ssl3_new(SSL *s);
 924 void    ssl3_free(SSL *s);
 925 int     ssl3_accept(SSL *s);
 926 int     ssl3_connect(SSL *s);
 927 int     ssl3_read(SSL *s, void *buf, int len);
 928 int     ssl3_peek(SSL *s, void *buf, int len);
 929 int     ssl3_write(SSL *s, const void *buf, int len);
 930 int     ssl3_shutdown(SSL *s);
 931 void    ssl3_clear(SSL *s);
 932 long    ssl3_ctrl(SSL *s,int cmd, long larg, void *parg);
 933 long    ssl3_ctx_ctrl(SSL_CTX *s,int cmd, long larg, void *parg);
 934 long    ssl3_callback_ctrl(SSL *s,int cmd, void (*fp)(void));
 935 long    ssl3_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)(void));
 936 int     ssl3_pending(const SSL *s);
 937 
 938 void ssl3_record_sequence_update(unsigned char *seq);
 939 int ssl3_do_change_cipher_spec(SSL *ssl);
 940 long ssl3_default_timeout(void );
 941 
 942 int ssl23_num_ciphers(void );
 943 const SSL_CIPHER *ssl23_get_cipher(unsigned int u);
 944 int ssl23_read(SSL *s, void *buf, int len);
 945 int ssl23_peek(SSL *s, void *buf, int len);
 946 int ssl23_write(SSL *s, const void *buf, int len);
 947 int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
 948 const SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p);
 949 long ssl23_default_timeout(void );
 950 
 951 long tls1_default_timeout(void);
 952 int dtls1_do_write(SSL *s,int type);
 953 int ssl3_read_n(SSL *s, int n, int max, int extend);
 954 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
 955 int ssl3_do_compress(SSL *ssl);
 956 int ssl3_do_uncompress(SSL *ssl);
 957 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
 958         unsigned int len);
 959 unsigned char *dtls1_set_message_header(SSL *s, 
 960         unsigned char *p, unsigned char mt,     unsigned long len, 
 961         unsigned long frag_off, unsigned long frag_len);
 962 
 963 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
 964 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len);
 965 
 966 int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
 967 int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen);
 968 unsigned long dtls1_output_cert_chain(SSL *s, X509 *x);
 969 int dtls1_read_failed(SSL *s, int code);
 970 int dtls1_buffer_message(SSL *s, int ccs);
 971 int dtls1_retransmit_message(SSL *s, unsigned short seq, 
 972         unsigned long frag_off, int *found);
 973 int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
 974 int dtls1_retransmit_buffered_messages(SSL *s);
 975 void dtls1_clear_record_buffer(SSL *s);
 976 void dtls1_get_message_header(unsigned char *data, struct hm_header_st *msg_hdr);
 977 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
 978 void dtls1_reset_seq_numbers(SSL *s, int rw);
 979 long dtls1_default_timeout(void);
 980 struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft);
 981 int dtls1_check_timeout_num(SSL *s);
 982 int dtls1_handle_timeout(SSL *s);
 983 const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
 984 void dtls1_start_timer(SSL *s);
 985 void dtls1_stop_timer(SSL *s);
 986 int dtls1_is_timer_expired(SSL *s);
 987 void dtls1_double_timeout(SSL *s);
 988 int dtls1_send_newsession_ticket(SSL *s);
 989 unsigned int dtls1_min_mtu(void);
 990 
 991 /* some client-only functions */
 992 int ssl3_client_hello(SSL *s);
 993 int ssl3_get_server_hello(SSL *s);
 994 int ssl3_get_certificate_request(SSL *s);
 995 int ssl3_get_new_session_ticket(SSL *s);
 996 int ssl3_get_cert_status(SSL *s);
 997 int ssl3_get_server_done(SSL *s);
 998 int ssl3_send_client_verify(SSL *s);
 999 int ssl3_send_client_certificate(SSL *s);
1000 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
1001 int ssl3_send_client_key_exchange(SSL *s);
1002 int ssl3_get_key_exchange(SSL *s);
1003 int ssl3_get_server_certificate(SSL *s);
1004 int ssl3_check_cert_and_algorithm(SSL *s);
1005 #ifndef OPENSSL_NO_TLSEXT
1006 int ssl3_check_finished(SSL *s);
1007 # ifndef OPENSSL_NO_NEXTPROTONEG
1008 int ssl3_send_next_proto(SSL *s);
1009 # endif
1010 #endif
1011 
1012 int dtls1_client_hello(SSL *s);
1013 int dtls1_send_client_certificate(SSL *s);
1014 int dtls1_send_client_key_exchange(SSL *s);
1015 int dtls1_send_client_verify(SSL *s);
1016 
1017 /* some server-only functions */
1018 int ssl3_get_client_hello(SSL *s);
1019 int ssl3_send_server_hello(SSL *s);
1020 int ssl3_send_hello_request(SSL *s);
1021 int ssl3_send_server_key_exchange(SSL *s);
1022 int ssl3_send_certificate_request(SSL *s);
1023 int ssl3_send_server_done(SSL *s);
1024 int ssl3_check_client_hello(SSL *s);
1025 int ssl3_get_client_certificate(SSL *s);
1026 int ssl3_get_client_key_exchange(SSL *s);
1027 int ssl3_get_cert_verify(SSL *s);
1028 #ifndef OPENSSL_NO_NEXTPROTONEG
1029 int ssl3_get_next_proto(SSL *s);
1030 #endif
1031 
1032 int dtls1_send_hello_request(SSL *s);
1033 int dtls1_send_server_hello(SSL *s);
1034 int dtls1_send_server_certificate(SSL *s);
1035 int dtls1_send_server_key_exchange(SSL *s);
1036 int dtls1_send_certificate_request(SSL *s);
1037 int dtls1_send_server_done(SSL *s);
1038 
1039 
1040 
1041 int ssl23_accept(SSL *s);
1042 int ssl23_connect(SSL *s);
1043 int ssl23_read_bytes(SSL *s, int n);
1044 int ssl23_write_bytes(SSL *s);
1045 
1046 int tls1_new(SSL *s);
1047 void tls1_free(SSL *s);
1048 void tls1_clear(SSL *s);
1049 long tls1_ctrl(SSL *s,int cmd, long larg, void *parg);
1050 long tls1_callback_ctrl(SSL *s,int cmd, void (*fp)(void));
1051 
1052 int dtls1_new(SSL *s);
1053 int     dtls1_accept(SSL *s);
1054 int     dtls1_connect(SSL *s);
1055 void dtls1_free(SSL *s);
1056 void dtls1_clear(SSL *s);
1057 long dtls1_ctrl(SSL *s,int cmd, long larg, void *parg);
1058 int dtls1_shutdown(SSL *s);
1059 
1060 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
1061 int dtls1_get_record(SSL *s);
1062 int do_dtls1_write(SSL *s, int type, const unsigned char *buf,
1063         unsigned int len, int create_empty_fragement);
1064 int dtls1_dispatch_alert(SSL *s);
1065 int dtls1_enc(SSL *s, int snd);
1066 
1067 int ssl_init_wbio_buffer(SSL *s, int push);
1068 void ssl_free_wbio_buffer(SSL *s);
1069 
1070 int tls1_change_cipher_state(SSL *s, int which);
1071 int tls1_setup_key_block(SSL *s);
1072 int tls1_enc(SSL *s, int snd);
1073 int tls1_final_finish_mac(SSL *s,
1074         const char *str, int slen, unsigned char *p);
1075 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
1076 int tls1_mac(SSL *ssl, unsigned char *md, int snd);
1077 int tls1_generate_master_secret(SSL *s, unsigned char *out,
1078         unsigned char *p, int len);
1079 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1080         const char *label, size_t llen,
1081         const unsigned char *p, size_t plen, int use_context);
1082 int tls1_alert_code(int code);
1083 int ssl3_alert_code(int code);
1084 int ssl_ok(SSL *s);
1085 
1086 #ifndef OPENSSL_NO_ECDH
1087 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
1088 #endif
1089 
1090 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
1091 
1092 #ifndef OPENSSL_NO_EC
1093 int tls1_ec_curve_id2nid(int curve_id);
1094 int tls1_ec_nid2curve_id(int nid);
1095 #endif /* OPENSSL_NO_EC */
1096 
1097 #ifndef OPENSSL_NO_TLSEXT
1098 unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *p, unsigned char *limit); 
1099 unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *p, unsigned char *limit); 
1100 int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **data, unsigned char *d, int n, int *al);
1101 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data, unsigned char *d, int n, int *al);
1102 int ssl_prepare_clienthello_tlsext(SSL *s);
1103 int ssl_prepare_serverhello_tlsext(SSL *s);
1104 int ssl_check_clienthello_tlsext_early(SSL *s);
1105 int ssl_check_clienthello_tlsext_late(SSL *s);
1106 int ssl_check_serverhello_tlsext(SSL *s);
1107 
1108 #ifndef OPENSSL_NO_HEARTBEATS
1109 int tls1_heartbeat(SSL *s);
1110 int dtls1_heartbeat(SSL *s);
1111 int tls1_process_heartbeat(SSL *s);
1112 int dtls1_process_heartbeat(SSL *s);
1113 #endif
1114 
1115 #ifdef OPENSSL_NO_SHA256
1116 #define tlsext_tick_md  EVP_sha1
1117 #else
1118 #define tlsext_tick_md  EVP_sha256
1119 #endif
1120 int tls1_process_ticket(SSL *s, unsigned char *session_id, int len,
1121                                 const unsigned char *limit, SSL_SESSION **ret);
1122 
1123 int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
1124                                 const EVP_MD *md);
1125 int tls12_get_sigid(const EVP_PKEY *pk);
1126 const EVP_MD *tls12_get_hash(unsigned char hash_alg);
1127 
1128 #endif
1129 EVP_MD_CTX* ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) ;
1130 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
1131 int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1132                                         int maxlen);
1133 int ssl_parse_serverhello_renegotiate_ext(SSL *s, unsigned char *d, int len,
1134                                           int *al);
1135 int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1136                                         int maxlen);
1137 int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len,
1138                                           int *al);
1139 long ssl_get_algorithm2(SSL *s);
1140 int tls1_process_sigalgs(SSL *s, const unsigned char *data, int dsize);
1141 int tls12_get_req_sig_algs(SSL *s, unsigned char *p);
1142 
1143 int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen);
1144 int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len,int *al);
1145 int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen);
1146 int ssl_parse_serverhello_use_srtp_ext(SSL *s, unsigned char *d, int len,int *al);
1147 
1148 /* s3_cbc.c */
1149 void ssl3_cbc_copy_mac(unsigned char* out,
1150                        const SSL3_RECORD *rec,
1151                        unsigned md_size,unsigned orig_len);
1152 int ssl3_cbc_remove_padding(const SSL* s,
1153                             SSL3_RECORD *rec,
1154                             unsigned block_size,
1155                             unsigned mac_size);
1156 int tls1_cbc_remove_padding(const SSL* s,
1157                             SSL3_RECORD *rec,
1158                             unsigned block_size,
1159                             unsigned mac_size);
1160 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
1161 void ssl3_cbc_digest_record(
1162         const EVP_MD_CTX *ctx,
1163         unsigned char* md_out,
1164         size_t* md_out_size,
1165         const unsigned char header[13],
1166         const unsigned char *data,
1167         size_t data_plus_mac_size,
1168         size_t data_plus_mac_plus_padding_size,
1169         const unsigned char *mac_secret,
1170         unsigned mac_secret_length,
1171         char is_sslv3);
1172 
1173 void tls_fips_digest_extra(
1174         const EVP_CIPHER_CTX *cipher_ctx, EVP_MD_CTX *mac_ctx,
1175         const unsigned char *data, size_t data_len, size_t orig_len);
1176 
1177 #endif