ssl/s3_lib.c

   1 /* ssl/s3_lib.c */
   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) 1998-2000 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 #include <stdio.h>
 113 #include <openssl/md5.h>
 114 #include <openssl/sha.h>
 115 #include <openssl/objects.h>
 116 #include "ssl_locl.h"
 117
 118 const char *ssl3_version_str="SSLv3" OPENSSL_VERSION_PTEXT;
 119
 120 #define SSL3_NUM_CIPHERS        (sizeof(ssl3_ciphers)/sizeof(SSL_CIPHER))
 121
 122 static long ssl3_default_timeout(void );
 123
 124 OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
 125 /* The RSA ciphers */
 126 /* Cipher 01 */
 127         {
 128         1,
 129         SSL3_TXT_RSA_NULL_MD5,
 130         SSL3_CK_RSA_NULL_MD5,
 131         SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_MD5|SSL_SSLV3,
 132         SSL_NOT_EXP,
 133         0,
 134         0,
 135         0,
 136         SSL_ALL_CIPHERS,
 137         SSL_ALL_STRENGTHS,
 138         },
 139 /* Cipher 02 */
 140         {
 141         1,
 142         SSL3_TXT_RSA_NULL_SHA,
 143         SSL3_CK_RSA_NULL_SHA,
 144         SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_SHA1|SSL_SSLV3,
 145         SSL_NOT_EXP,
 146         0,
 147         0,
 148         0,
 149         SSL_ALL_CIPHERS,
 150         SSL_ALL_STRENGTHS,
 151         },
 152
 153 /* anon DH */
 154 /* Cipher 17 */
 155         {
 156         1,
 157         SSL3_TXT_ADH_RC4_40_MD5,
 158         SSL3_CK_ADH_RC4_40_MD5,
 159         SSL_kEDH |SSL_aNULL|SSL_RC4  |SSL_MD5 |SSL_SSLV3,
 160         SSL_EXPORT|SSL_EXP40,
 161         0,
 162         40,
 163         128,
 164         SSL_ALL_CIPHERS,
 165         SSL_ALL_STRENGTHS,
 166         },
 167 /* Cipher 18 */
 168         {
 169         1,
 170         SSL3_TXT_ADH_RC4_128_MD5,
 171         SSL3_CK_ADH_RC4_128_MD5,
 172         SSL_kEDH |SSL_aNULL|SSL_RC4  |SSL_MD5 |SSL_SSLV3,
 173         SSL_NOT_EXP,
 174         0,
 175         128,
 176         128,
 177         SSL_ALL_CIPHERS,
 178         SSL_ALL_STRENGTHS,
 179         },
 180 /* Cipher 19 */
 181         {
 182         1,
 183         SSL3_TXT_ADH_DES_40_CBC_SHA,
 184         SSL3_CK_ADH_DES_40_CBC_SHA,
 185         SSL_kEDH |SSL_aNULL|SSL_DES|SSL_SHA1|SSL_SSLV3,
 186         SSL_EXPORT|SSL_EXP40,
 187         0,
 188         40,
 189         128,
 190         SSL_ALL_CIPHERS,
 191         SSL_ALL_STRENGTHS,
 192         },
 193 /* Cipher 1A */
 194         {
 195         1,
 196         SSL3_TXT_ADH_DES_64_CBC_SHA,
 197         SSL3_CK_ADH_DES_64_CBC_SHA,
 198         SSL_kEDH |SSL_aNULL|SSL_DES  |SSL_SHA1|SSL_SSLV3,
 199         SSL_NOT_EXP,
 200         0,
 201         56,
 202         56,
 203         SSL_ALL_CIPHERS,
 204         SSL_ALL_STRENGTHS,
 205         },
 206 /* Cipher 1B */
 207         {
 208         1,
 209         SSL3_TXT_ADH_DES_192_CBC_SHA,
 210         SSL3_CK_ADH_DES_192_CBC_SHA,
 211         SSL_kEDH |SSL_aNULL|SSL_3DES |SSL_SHA1|SSL_SSLV3,
 212         SSL_NOT_EXP,
 213         0,
 214         168,
 215         168,
 216         SSL_ALL_CIPHERS,
 217         SSL_ALL_STRENGTHS,
 218         },
 219
 220 /* RSA again */
 221 /* Cipher 03 */
 222         {
 223         1,
 224         SSL3_TXT_RSA_RC4_40_MD5,
 225         SSL3_CK_RSA_RC4_40_MD5,
 226         SSL_kRSA|SSL_aRSA|SSL_RC4  |SSL_MD5 |SSL_SSLV3,
 227         SSL_EXPORT|SSL_EXP40,
 228         0,
 229         40,
 230         128,
 231         SSL_ALL_CIPHERS,
 232         SSL_ALL_STRENGTHS,
 233         },
 234 /* Cipher 04 */
 235         {
 236         1,
 237         SSL3_TXT_RSA_RC4_128_MD5,
 238         SSL3_CK_RSA_RC4_128_MD5,
 239         SSL_kRSA|SSL_aRSA|SSL_RC4  |SSL_MD5|SSL_SSLV3,
 240         SSL_NOT_EXP|SSL_MEDIUM,
 241         0,
 242         128,
 243         128,
 244         SSL_ALL_CIPHERS,
 245         SSL_ALL_STRENGTHS,
 246         },
 247 /* Cipher 05 */
 248         {
 249         1,
 250         SSL3_TXT_RSA_RC4_128_SHA,
 251         SSL3_CK_RSA_RC4_128_SHA,
 252         SSL_kRSA|SSL_aRSA|SSL_RC4  |SSL_SHA1|SSL_SSLV3,
 253         SSL_NOT_EXP|SSL_MEDIUM,
 254         0,
 255         128,
 256         128,
 257         SSL_ALL_CIPHERS,
 258         SSL_ALL_STRENGTHS,
 259         },
 260 /* Cipher 06 */
 261         {
 262         1,
 263         SSL3_TXT_RSA_RC2_40_MD5,
 264         SSL3_CK_RSA_RC2_40_MD5,
 265         SSL_kRSA|SSL_aRSA|SSL_RC2  |SSL_MD5 |SSL_SSLV3,
 266         SSL_EXPORT|SSL_EXP40,
 267         0,
 268         40,
 269         128,
 270         SSL_ALL_CIPHERS,
 271         SSL_ALL_STRENGTHS,
 272         },
 273 /* Cipher 07 */
 274         {
 275         1,
 276         SSL3_TXT_RSA_IDEA_128_SHA,
 277         SSL3_CK_RSA_IDEA_128_SHA,
 278         SSL_kRSA|SSL_aRSA|SSL_IDEA |SSL_SHA1|SSL_SSLV3,
 279         SSL_NOT_EXP|SSL_MEDIUM,
 280         0,
 281         128,
 282         128,
 283         SSL_ALL_CIPHERS,
 284         SSL_ALL_STRENGTHS,
 285         },
 286 /* Cipher 08 */
 287         {
 288         1,
 289         SSL3_TXT_RSA_DES_40_CBC_SHA,
 290         SSL3_CK_RSA_DES_40_CBC_SHA,
 291         SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_SSLV3,
 292         SSL_EXPORT|SSL_EXP40,
 293         0,
 294         40,
 295         56,
 296         SSL_ALL_CIPHERS,
 297         SSL_ALL_STRENGTHS,
 298         },
 299 /* Cipher 09 */
 300         {
 301         1,
 302         SSL3_TXT_RSA_DES_64_CBC_SHA,
 303         SSL3_CK_RSA_DES_64_CBC_SHA,
 304         SSL_kRSA|SSL_aRSA|SSL_DES  |SSL_SHA1|SSL_SSLV3,
 305         SSL_NOT_EXP|SSL_LOW,
 306         0,
 307         56,
 308         56,
 309         SSL_ALL_CIPHERS,
 310         SSL_ALL_STRENGTHS,
 311         },
 312 /* Cipher 0A */
 313         {
 314         1,
 315         SSL3_TXT_RSA_DES_192_CBC3_SHA,
 316         SSL3_CK_RSA_DES_192_CBC3_SHA,
 317         SSL_kRSA|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_SSLV3,
 318         SSL_NOT_EXP|SSL_HIGH,
 319         0,
 320         168,
 321         168,
 322         SSL_ALL_CIPHERS,
 323         SSL_ALL_STRENGTHS,
 324         },
 325
 326 /*  The DH ciphers */
 327 /* Cipher 0B */
 328         {
 329         0,
 330         SSL3_TXT_DH_DSS_DES_40_CBC_SHA,
 331         SSL3_CK_DH_DSS_DES_40_CBC_SHA,
 332         SSL_kDHd |SSL_aDH|SSL_DES|SSL_SHA1|SSL_SSLV3,
 333         SSL_EXPORT|SSL_EXP40,
 334         0,
 335         40,
 336         56,
 337         SSL_ALL_CIPHERS,
 338         SSL_ALL_STRENGTHS,
 339         },
 340 /* Cipher 0C */
 341         {
 342         0,
 343         SSL3_TXT_DH_DSS_DES_64_CBC_SHA,
 344         SSL3_CK_DH_DSS_DES_64_CBC_SHA,
 345         SSL_kDHd |SSL_aDH|SSL_DES  |SSL_SHA1|SSL_SSLV3,
 346         SSL_NOT_EXP|SSL_LOW,
 347         0,
 348         56,
 349         56,
 350         SSL_ALL_CIPHERS,
 351         SSL_ALL_STRENGTHS,
 352         },
 353 /* Cipher 0D */
 354         {
 355         0,
 356         SSL3_TXT_DH_DSS_DES_192_CBC3_SHA,
 357         SSL3_CK_DH_DSS_DES_192_CBC3_SHA,
 358         SSL_kDHd |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_SSLV3,
 359         SSL_NOT_EXP|SSL_HIGH,
 360         0,
 361         168,
 362         168,
 363         SSL_ALL_CIPHERS,
 364         SSL_ALL_STRENGTHS,
 365         },
 366 /* Cipher 0E */
 367         {
 368         0,
 369         SSL3_TXT_DH_RSA_DES_40_CBC_SHA,
 370         SSL3_CK_DH_RSA_DES_40_CBC_SHA,
 371         SSL_kDHr |SSL_aDH|SSL_DES|SSL_SHA1|SSL_SSLV3,
 372         SSL_EXPORT|SSL_EXP40,
 373         0,
 374         40,
 375         56,
 376         SSL_ALL_CIPHERS,
 377         SSL_ALL_STRENGTHS,
 378         },
 379 /* Cipher 0F */
 380         {
 381         0,
 382         SSL3_TXT_DH_RSA_DES_64_CBC_SHA,
 383         SSL3_CK_DH_RSA_DES_64_CBC_SHA,
 384         SSL_kDHr |SSL_aDH|SSL_DES  |SSL_SHA1|SSL_SSLV3,
 385         SSL_NOT_EXP|SSL_LOW,
 386         0,
 387         56,
 388         56,
 389         SSL_ALL_CIPHERS,
 390         SSL_ALL_STRENGTHS,
 391         },
 392 /* Cipher 10 */
 393         {
 394         0,
 395         SSL3_TXT_DH_RSA_DES_192_CBC3_SHA,
 396         SSL3_CK_DH_RSA_DES_192_CBC3_SHA,
 397         SSL_kDHr |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_SSLV3,
 398         SSL_NOT_EXP|SSL_HIGH,
 399         0,
 400         168,
 401         168,
 402         SSL_ALL_CIPHERS,
 403         SSL_ALL_STRENGTHS,
 404         },
 405
 406 /* The Ephemeral DH ciphers */
 407 /* Cipher 11 */
 408         {
 409         1,
 410         SSL3_TXT_EDH_DSS_DES_40_CBC_SHA,
 411         SSL3_CK_EDH_DSS_DES_40_CBC_SHA,
 412         SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA1|SSL_SSLV3,
 413         SSL_EXPORT|SSL_EXP40,
 414         0,
 415         40,
 416         56,
 417         SSL_ALL_CIPHERS,
 418         SSL_ALL_STRENGTHS,
 419         },
 420 /* Cipher 12 */
 421         {
 422         1,
 423         SSL3_TXT_EDH_DSS_DES_64_CBC_SHA,
 424         SSL3_CK_EDH_DSS_DES_64_CBC_SHA,
 425         SSL_kEDH|SSL_aDSS|SSL_DES  |SSL_SHA1|SSL_SSLV3,
 426         SSL_NOT_EXP|SSL_LOW,
 427         0,
 428         56,
 429         56,
 430         SSL_ALL_CIPHERS,
 431         SSL_ALL_STRENGTHS,
 432         },
 433 /* Cipher 13 */
 434         {
 435         1,
 436         SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA,
 437         SSL3_CK_EDH_DSS_DES_192_CBC3_SHA,
 438         SSL_kEDH|SSL_aDSS|SSL_3DES |SSL_SHA1|SSL_SSLV3,
 439         SSL_NOT_EXP|SSL_HIGH,
 440         0,
 441         168,
 442         168,
 443         SSL_ALL_CIPHERS,
 444         SSL_ALL_STRENGTHS,
 445         },
 446 /* Cipher 14 */
 447         {
 448         1,
 449         SSL3_TXT_EDH_RSA_DES_40_CBC_SHA,
 450         SSL3_CK_EDH_RSA_DES_40_CBC_SHA,
 451         SSL_kEDH|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_SSLV3,
 452         SSL_EXPORT|SSL_EXP40,
 453         0,
 454         40,
 455         56,
 456         SSL_ALL_CIPHERS,
 457         SSL_ALL_STRENGTHS,
 458         },
 459 /* Cipher 15 */
 460         {
 461         1,
 462         SSL3_TXT_EDH_RSA_DES_64_CBC_SHA,
 463         SSL3_CK_EDH_RSA_DES_64_CBC_SHA,
 464         SSL_kEDH|SSL_aRSA|SSL_DES  |SSL_SHA1|SSL_SSLV3,
 465         SSL_NOT_EXP|SSL_LOW,
 466         0,
 467         56,
 468         56,
 469         SSL_ALL_CIPHERS,
 470         SSL_ALL_STRENGTHS,
 471         },
 472 /* Cipher 16 */
 473         {
 474         1,
 475         SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA,
 476         SSL3_CK_EDH_RSA_DES_192_CBC3_SHA,
 477         SSL_kEDH|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_SSLV3,
 478         SSL_NOT_EXP|SSL_HIGH,
 479         0,
 480         168,
 481         168,
 482         SSL_ALL_CIPHERS,
 483         SSL_ALL_STRENGTHS,
 484         },
 485
 486 /* Fortezza */
 487 /* Cipher 1C */
 488         {
 489         0,
 490         SSL3_TXT_FZA_DMS_NULL_SHA,
 491         SSL3_CK_FZA_DMS_NULL_SHA,
 492         SSL_kFZA|SSL_aFZA |SSL_eNULL |SSL_SHA1|SSL_SSLV3,
 493         SSL_NOT_EXP,
 494         0,
 495         0,
 496         0,
 497         SSL_ALL_CIPHERS,
 498         SSL_ALL_STRENGTHS,
 499         },
 500
 501 /* Cipher 1D */
 502         {
 503         0,
 504         SSL3_TXT_FZA_DMS_FZA_SHA,
 505         SSL3_CK_FZA_DMS_FZA_SHA,
 506         SSL_kFZA|SSL_aFZA |SSL_eFZA |SSL_SHA1|SSL_SSLV3,
 507         SSL_NOT_EXP,
 508         0,
 509         0,
 510         0,
 511         SSL_ALL_CIPHERS,
 512         SSL_ALL_STRENGTHS,
 513         },
 514
 515 /* Cipher 1E */
 516         {
 517         0,
 518         SSL3_TXT_FZA_DMS_RC4_SHA,
 519         SSL3_CK_FZA_DMS_RC4_SHA,
 520         SSL_kFZA|SSL_aFZA |SSL_RC4  |SSL_SHA1|SSL_SSLV3,
 521         SSL_NOT_EXP,
 522         0,
 523         128,
 524         128,
 525         SSL_ALL_CIPHERS,
 526         SSL_ALL_STRENGTHS,
 527         },
 528
 529 #ifndef NO_KRB5
 530 /* The Kerberos ciphers
 531 ** 20000107 VRS: And the first shall be last,
 532 ** in hopes of avoiding the lynx ssl renegotiation problem.
 533 */
 534 /* Cipher 21 VRS */
 535         {
 536         1,
 537         SSL3_TXT_KRB5_DES_40_CBC_SHA,
 538         SSL3_CK_KRB5_DES_40_CBC_SHA,
 539         SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_SHA1   |SSL_SSLV3,
 540         SSL_EXPORT|SSL_EXP40,
 541         0,
 542         40,
 543         56,
 544         SSL_ALL_CIPHERS,
 545         SSL_ALL_STRENGTHS,
 546         },
 547
 548 /* Cipher 22 VRS */
 549         {
 550         1,
 551         SSL3_TXT_KRB5_DES_40_CBC_MD5,
 552         SSL3_CK_KRB5_DES_40_CBC_MD5,
 553         SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_MD5    |SSL_SSLV3,
 554         SSL_EXPORT|SSL_EXP40,
 555         0,
 556         40,
 557         56,
 558         SSL_ALL_CIPHERS,
 559         SSL_ALL_STRENGTHS,
 560         },
 561
 562 /* Cipher 23 VRS */
 563         {
 564         1,
 565         SSL3_TXT_KRB5_DES_64_CBC_SHA,
 566         SSL3_CK_KRB5_DES_64_CBC_SHA,
 567         SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_SHA1   |SSL_SSLV3,
 568         SSL_NOT_EXP|SSL_LOW,
 569         0,
 570         56,
 571         56,
 572         SSL_ALL_CIPHERS,
 573         SSL_ALL_STRENGTHS,
 574         },
 575
 576 /* Cipher 24 VRS */
 577         {
 578         1,
 579         SSL3_TXT_KRB5_DES_64_CBC_MD5,
 580         SSL3_CK_KRB5_DES_64_CBC_MD5,
 581         SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_MD5    |SSL_SSLV3,
 582         SSL_NOT_EXP|SSL_LOW,
 583         0,
 584         56,
 585         56,
 586         SSL_ALL_CIPHERS,
 587         SSL_ALL_STRENGTHS,
 588         },
 589
 590 /* Cipher 25 VRS */
 591         {
 592         1,
 593         SSL3_TXT_KRB5_DES_192_CBC3_SHA,
 594         SSL3_CK_KRB5_DES_192_CBC3_SHA,
 595         SSL_kKRB5|SSL_aKRB5|  SSL_3DES|SSL_SHA1  |SSL_SSLV3,
 596         SSL_NOT_EXP|SSL_HIGH,
 597         0,
 598         112,
 599         168,
 600         SSL_ALL_CIPHERS,
 601         SSL_ALL_STRENGTHS,
 602         },
 603
 604 /* Cipher 26 VRS */
 605         {
 606         1,
 607         SSL3_TXT_KRB5_DES_192_CBC3_MD5,
 608         SSL3_CK_KRB5_DES_192_CBC3_MD5,
 609         SSL_kKRB5|SSL_aKRB5|  SSL_3DES|SSL_MD5   |SSL_SSLV3,
 610         SSL_NOT_EXP|SSL_HIGH,
 611         0,
 612         112,
 613         168,
 614         SSL_ALL_CIPHERS,
 615         SSL_ALL_STRENGTHS,
 616         },
 617 #endif  /* NO_KRB5 */
 618 #if TLS1_ALLOW_EXPERIMENTAL_CIPHERSUITES
 619         /* New TLS Export CipherSuites */
 620         /* Cipher 60 */
 621             {
 622             1,
 623             TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_MD5,
 624             TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_MD5,
 625             SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_TLSV1,
 626             SSL_EXPORT|SSL_EXP56,
 627             0,
 628             56,
 629             128,
 630             SSL_ALL_CIPHERS,
 631             SSL_ALL_STRENGTHS,
 632             },
 633         /* Cipher 61 */
 634             {
 635             1,
 636             TLS1_TXT_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5,
 637             TLS1_CK_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5,
 638             SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_TLSV1,
 639             SSL_EXPORT|SSL_EXP56,
 640             0,
 641             56,
 642             128,
 643             SSL_ALL_CIPHERS,
 644             SSL_ALL_STRENGTHS,
 645             },
 646         /* Cipher 62 */
 647             {
 648             1,
 649             TLS1_TXT_RSA_EXPORT1024_WITH_DES_CBC_SHA,
 650             TLS1_CK_RSA_EXPORT1024_WITH_DES_CBC_SHA,
 651             SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA|SSL_TLSV1,
 652             SSL_EXPORT|SSL_EXP56,
 653             0,
 654             56,
 655             56,
 656             SSL_ALL_CIPHERS,
 657             SSL_ALL_STRENGTHS,
 658             },
 659         /* Cipher 63 */
 660             {
 661             1,
 662             TLS1_TXT_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA,
 663             TLS1_CK_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA,
 664             SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA|SSL_TLSV1,
 665             SSL_EXPORT|SSL_EXP56,
 666             0,
 667             56,
 668             56,
 669             SSL_ALL_CIPHERS,
 670             SSL_ALL_STRENGTHS,
 671             },
 672         /* Cipher 64 */
 673             {
 674             1,
 675             TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_SHA,
 676             TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_SHA,
 677             SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_SHA|SSL_TLSV1,
 678             SSL_EXPORT|SSL_EXP56,
 679             0,
 680             56,
 681             128,
 682             SSL_ALL_CIPHERS,
 683             SSL_ALL_STRENGTHS,
 684             },
 685         /* Cipher 65 */
 686             {
 687             1,
 688             TLS1_TXT_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA,
 689             TLS1_CK_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA,
 690             SSL_kEDH|SSL_aDSS|SSL_RC4|SSL_SHA|SSL_TLSV1,
 691             SSL_EXPORT|SSL_EXP56,
 692             0,
 693             56,
 694             128,
 695             SSL_ALL_CIPHERS,
 696             SSL_ALL_STRENGTHS,
 697             },
 698         /* Cipher 66 */
 699             {
 700             1,
 701             TLS1_TXT_DHE_DSS_WITH_RC4_128_SHA,
 702             TLS1_CK_DHE_DSS_WITH_RC4_128_SHA,
 703             SSL_kEDH|SSL_aDSS|SSL_RC4|SSL_SHA|SSL_TLSV1,
 704             SSL_NOT_EXP,
 705             0,
 706             128,
 707             128,
 708             SSL_ALL_CIPHERS,
 709             SSL_ALL_STRENGTHS
 710             },
 711         /* Cipher ?? */
 712             {
 713             1,
 714             TLS1_TXT_RSA_WITH_RD_128_SHA,
 715             TLS1_CK_RSA_WITH_RD_128_SHA,
 716             SSL_kRSA|SSL_aRSA|SSL_RD|SSL_SHA |SSL_TLSV1,
 717             SSL_NOT_EXP|SSL_HIGH,
 718             0,
 719             128,
 720             128,
 721             SSL_ALL_CIPHERS,
 722             SSL_ALL_STRENGTHS,
 723             },
 724 #endif
 725
 726 /* end of list */
 727         };
 728
 729 static SSL3_ENC_METHOD SSLv3_enc_data={
 730         ssl3_enc,
 731         ssl3_mac,
 732         ssl3_setup_key_block,
 733         ssl3_generate_master_secret,
 734         ssl3_change_cipher_state,
 735         ssl3_final_finish_mac,
 736         MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
 737         ssl3_cert_verify_mac,
 738         SSL3_MD_CLIENT_FINISHED_CONST,4,
 739         SSL3_MD_SERVER_FINISHED_CONST,4,
 740         ssl3_alert_code,
 741         };
 742
 743 static SSL_METHOD SSLv3_data= {
 744         SSL3_VERSION,
 745         ssl3_new,
 746         ssl3_clear,
 747         ssl3_free,
 748         ssl_undefined_function,
 749         ssl_undefined_function,
 750         ssl3_read,
 751         ssl3_peek,
 752         ssl3_write,
 753         ssl3_shutdown,
 754         ssl3_renegotiate,
 755         ssl3_renegotiate_check,
 756         ssl3_ctrl,
 757         ssl3_ctx_ctrl,
 758         ssl3_get_cipher_by_char,
 759         ssl3_put_cipher_by_char,
 760         ssl3_pending,
 761         ssl3_num_ciphers,
 762         ssl3_get_cipher,
 763         ssl_bad_method,
 764         ssl3_default_timeout,
 765         &SSLv3_enc_data,
 766         ssl_undefined_function,
 767         ssl3_callback_ctrl,
 768         ssl3_ctx_callback_ctrl,
 769         };
 770
 771 static long ssl3_default_timeout(void)
 772         {
 773         /* 2 hours, the 24 hours mentioned in the SSLv3 spec
 774          * is way too long for http, the cache would over fill */
 775         return(60*60*2);
 776         }
 777
 778 SSL_METHOD *sslv3_base_method(void)
 779         {
 780         return(&SSLv3_data);
 781         }
 782
 783 int ssl3_num_ciphers(void)
 784         {
 785         return(SSL3_NUM_CIPHERS);
 786         }
 787
 788 SSL_CIPHER *ssl3_get_cipher(unsigned int u)
 789         {
 790         if (u < SSL3_NUM_CIPHERS)
 791                 return(&(ssl3_ciphers[SSL3_NUM_CIPHERS-1-u]));
 792         else
 793                 return(NULL);
 794         }
 795
 796 int ssl3_pending(SSL *s)
 797         {
 798         return (s->s3->rrec.type == SSL3_RT_APPLICATION_DATA) ? s->s3->rrec.length : 0;
 799         }
 800
 801 int ssl3_new(SSL *s)
 802         {
 803         SSL3_STATE *s3;
 804
 805         if ((s3=OPENSSL_malloc(sizeof *s3)) == NULL) goto err;
 806         memset(s3,0,sizeof *s3);
 807
 808         s->s3=s3;
 809
 810         s->method->ssl_clear(s);
 811         return(1);
 812 err:
 813         return(0);
 814         }
 815
 816 void ssl3_free(SSL *s)
 817         {
 818         if(s == NULL)
 819             return;
 820
 821         ssl3_cleanup_key_block(s);
 822         if (s->s3->rbuf.buf != NULL)
 823                 OPENSSL_free(s->s3->rbuf.buf);
 824         if (s->s3->wbuf.buf != NULL)
 825                 OPENSSL_free(s->s3->wbuf.buf);
 826         if (s->s3->rrec.comp != NULL)
 827                 OPENSSL_free(s->s3->rrec.comp);
 828 #ifndef NO_DH
 829         if (s->s3->tmp.dh != NULL)
 830                 DH_free(s->s3->tmp.dh);
 831 #endif
 832         if (s->s3->tmp.ca_names != NULL)
 833                 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
 834         memset(s->s3,0,sizeof *s->s3);
 835         OPENSSL_free(s->s3);
 836         s->s3=NULL;
 837         }
 838
 839 void ssl3_clear(SSL *s)
 840         {
 841         unsigned char *rp,*wp;
 842
 843         ssl3_cleanup_key_block(s);
 844         if (s->s3->tmp.ca_names != NULL)
 845                 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
 846
 847         if (s->s3->rrec.comp != NULL)
 848                 {
 849                 OPENSSL_free(s->s3->rrec.comp);
 850                 s->s3->rrec.comp=NULL;
 851                 }
 852 #ifndef NO_DH
 853         if (s->s3->tmp.dh != NULL)
 854                 DH_free(s->s3->tmp.dh);
 855 #endif
 856
 857         rp=s->s3->rbuf.buf;
 858         wp=s->s3->wbuf.buf;
 859
 860         memset(s->s3,0,sizeof *s->s3);
 861         if (rp != NULL) s->s3->rbuf.buf=rp;
 862         if (wp != NULL) s->s3->wbuf.buf=wp;
 863
 864         ssl_free_wbio_buffer(s);
 865
 866         s->packet_length=0;
 867         s->s3->renegotiate=0;
 868         s->s3->total_renegotiations=0;
 869         s->s3->num_renegotiations=0;
 870         s->s3->in_read_app_data=0;
 871         s->version=SSL3_VERSION;
 872         }
 873
 874 long ssl3_ctrl(SSL *s, int cmd, long larg, char *parg)
 875         {
 876         int ret=0;
 877
 878 #if !defined(NO_DSA) || !defined(NO_RSA)
 879         if (
 880 #ifndef NO_RSA
 881             cmd == SSL_CTRL_SET_TMP_RSA ||
 882             cmd == SSL_CTRL_SET_TMP_RSA_CB ||
 883 #endif
 884 #ifndef NO_DSA
 885             cmd == SSL_CTRL_SET_TMP_DH ||
 886             cmd == SSL_CTRL_SET_TMP_DH_CB ||
 887 #endif
 888                 0)
 889                 {
 890                 if (!ssl_cert_inst(&s->cert))
 891                         {
 892                         SSLerr(SSL_F_SSL3_CTRL, ERR_R_MALLOC_FAILURE);
 893                         return(0);
 894                         }
 895                 }
 896 #endif
 897
 898         switch (cmd)
 899                 {
 900         case SSL_CTRL_GET_SESSION_REUSED:
 901                 ret=s->hit;
 902                 break;
 903         case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
 904                 break;
 905         case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
 906                 ret=s->s3->num_renegotiations;
 907                 break;
 908         case SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS:
 909                 ret=s->s3->num_renegotiations;
 910                 s->s3->num_renegotiations=0;
 911                 break;
 912         case SSL_CTRL_GET_TOTAL_RENEGOTIATIONS:
 913                 ret=s->s3->total_renegotiations;
 914                 break;
 915         case SSL_CTRL_GET_FLAGS:
 916                 ret=(int)(s->s3->flags);
 917                 break;
 918 #ifndef NO_RSA
 919         case SSL_CTRL_NEED_TMP_RSA:
 920                 if ((s->cert != NULL) && (s->cert->rsa_tmp == NULL) &&
 921                     ((s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
 922                      (EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8))))
 923                         ret = 1;
 924                 break;
 925         case SSL_CTRL_SET_TMP_RSA:
 926                 {
 927                         RSA *rsa = (RSA *)parg;
 928                         if (rsa == NULL)
 929                                 {
 930                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
 931                                 return(ret);
 932                                 }
 933                         if ((rsa = RSAPrivateKey_dup(rsa)) == NULL)
 934                                 {
 935                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_RSA_LIB);
 936                                 return(ret);
 937                                 }
 938                         if (s->cert->rsa_tmp != NULL)
 939                                 RSA_free(s->cert->rsa_tmp);
 940                         s->cert->rsa_tmp = rsa;
 941                         ret = 1;
 942                 }
 943                 break;
 944         case SSL_CTRL_SET_TMP_RSA_CB:
 945                 {
 946                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
 947                 return(ret);
 948                 }
 949                 break;
 950 #endif
 951 #ifndef NO_DH
 952         case SSL_CTRL_SET_TMP_DH:
 953                 {
 954                         DH *dh = (DH *)parg;
 955                         if (dh == NULL)
 956                                 {
 957                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
 958                                 return(ret);
 959                                 }
 960                         if ((dh = DHparams_dup(dh)) == NULL)
 961                                 {
 962                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
 963                                 return(ret);
 964                                 }
 965                         if (!(s->options & SSL_OP_SINGLE_DH_USE))
 966                                 {
 967                                 if (!DH_generate_key(dh))
 968                                         {
 969                                         DH_free(dh);
 970                                         SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
 971                                         return(ret);
 972                                         }
 973                                 }
 974                         if (s->cert->dh_tmp != NULL)
 975                                 DH_free(s->cert->dh_tmp);
 976                         s->cert->dh_tmp = dh;
 977                         ret = 1;
 978                 }
 979                 break;
 980         case SSL_CTRL_SET_TMP_DH_CB:
 981                 {
 982                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
 983                 return(ret);
 984                 }
 985                 break;
 986 #endif
 987         default:
 988                 break;
 989                 }
 990         return(ret);
 991         }
 992
 993 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)())
 994         {
 995         int ret=0;
 996
 997 #if !defined(NO_DSA) || !defined(NO_RSA)
 998         if (
 999 #ifndef NO_RSA
1000             cmd == SSL_CTRL_SET_TMP_RSA_CB ||
1001 #endif
1002 #ifndef NO_DSA
1003             cmd == SSL_CTRL_SET_TMP_DH_CB ||
1004 #endif
1005                 0)
1006                 {
1007                 if (!ssl_cert_inst(&s->cert))
1008                         {
1009                         SSLerr(SSL_F_SSL3_CALLBACK_CTRL, ERR_R_MALLOC_FAILURE);
1010                         return(0);
1011                         }
1012                 }
1013 #endif
1014
1015         switch (cmd)
1016                 {
1017 #ifndef NO_RSA
1018         case SSL_CTRL_SET_TMP_RSA_CB:
1019                 {
1020                 s->cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))fp;
1021                 }
1022                 break;
1023 #endif
1024 #ifndef NO_DH
1025         case SSL_CTRL_SET_TMP_DH_CB:
1026                 {
1027                 s->cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
1028                 }
1029                 break;
1030 #endif
1031         default:
1032                 break;
1033                 }
1034         return(ret);
1035         }
1036
1037 long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, char *parg)
1038         {
1039         CERT *cert;
1040
1041         cert=ctx->cert;
1042
1043         switch (cmd)
1044                 {
1045 #ifndef NO_RSA
1046         case SSL_CTRL_NEED_TMP_RSA:
1047                 if (    (cert->rsa_tmp == NULL) &&
1048                         ((cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
1049                          (EVP_PKEY_size(cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8)))
1050                         )
1051                         return(1);
1052                 else
1053                         return(0);
1054                 /* break; */
1055         case SSL_CTRL_SET_TMP_RSA:
1056                 {
1057                 RSA *rsa;
1058                 int i;
1059
1060                 rsa=(RSA *)parg;
1061                 i=1;
1062                 if (rsa == NULL)
1063                         i=0;
1064                 else
1065                         {
1066                         if ((rsa=RSAPrivateKey_dup(rsa)) == NULL)
1067                                 i=0;
1068                         }
1069                 if (!i)
1070                         {
1071                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_RSA_LIB);
1072                         return(0);
1073                         }
1074                 else
1075                         {
1076                         if (cert->rsa_tmp != NULL)
1077                                 RSA_free(cert->rsa_tmp);
1078                         cert->rsa_tmp=rsa;
1079                         return(1);
1080                         }
1081                 }
1082                 /* break; */
1083         case SSL_CTRL_SET_TMP_RSA_CB:
1084                 {
1085                 SSLerr(SSL_F_SSL3_CTX_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1086                 return(0);
1087                 }
1088                 break;
1089 #endif
1090 #ifndef NO_DH
1091         case SSL_CTRL_SET_TMP_DH:
1092                 {
1093                 DH *new=NULL,*dh;
1094
1095                 dh=(DH *)parg;
1096                 if ((new=DHparams_dup(dh)) == NULL)
1097                         {
1098                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
1099                         return 0;
1100                         }
1101                 if (!(ctx->options & SSL_OP_SINGLE_DH_USE))
1102                         {
1103                         if (!DH_generate_key(new))
1104                                 {
1105                                 SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
1106                                 DH_free(new);
1107                                 return 0;
1108                                 }
1109                         }
1110                 if (cert->dh_tmp != NULL)
1111                         DH_free(cert->dh_tmp);
1112                 cert->dh_tmp=new;
1113                 return 1;
1114                 }
1115                 /*break; */
1116         case SSL_CTRL_SET_TMP_DH_CB:
1117                 {
1118                 SSLerr(SSL_F_SSL3_CTX_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1119                 return(0);
1120                 }
1121                 break;
1122 #endif
1123         /* A Thawte special :-) */
1124         case SSL_CTRL_EXTRA_CHAIN_CERT:
1125                 if (ctx->extra_certs == NULL)
1126                         {
1127                         if ((ctx->extra_certs=sk_X509_new_null()) == NULL)
1128                                 return(0);
1129                         }
1130                 sk_X509_push(ctx->extra_certs,(X509 *)parg);
1131                 break;
1132
1133         default:
1134                 return(0);
1135                 }
1136         return(1);
1137         }
1138
1139 long ssl3_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
1140         {
1141         CERT *cert;
1142
1143         cert=ctx->cert;
1144
1145         switch (cmd)
1146                 {
1147 #ifndef NO_RSA
1148         case SSL_CTRL_SET_TMP_RSA_CB:
1149                 {
1150                 cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))fp;
1151                 }
1152                 break;
1153 #endif
1154 #ifndef NO_DH
1155         case SSL_CTRL_SET_TMP_DH_CB:
1156                 {
1157                 cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
1158                 }
1159                 break;
1160 #endif
1161         default:
1162                 return(0);
1163                 }
1164         return(1);
1165         }
1166
1167 /* This function needs to check if the ciphers required are actually
1168  * available */
1169 SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p)
1170         {
1171         static int init=1;
1172         static SSL_CIPHER *sorted[SSL3_NUM_CIPHERS];
1173         SSL_CIPHER c,*cp= &c,**cpp;
1174         unsigned long id;
1175         int i;
1176
1177         if (init)
1178                 {
1179                 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
1180
1181                 for (i=0; i<SSL3_NUM_CIPHERS; i++)
1182                         sorted[i]= &(ssl3_ciphers[i]);
1183
1184                 qsort(  (char *)sorted,
1185                         SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
1186                         FP_ICC ssl_cipher_ptr_id_cmp);
1187
1188                 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
1189
1190                 init=0;
1191                 }
1192
1193         id=0x03000000L|((unsigned long)p[0]<<8L)|(unsigned long)p[1];
1194         c.id=id;
1195         cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp,
1196                 (char *)sorted,
1197                 SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
1198                 FP_ICC ssl_cipher_ptr_id_cmp);
1199         if ((cpp == NULL) || !(*cpp)->valid)
1200                 return(NULL);
1201         else
1202                 return(*cpp);
1203         }
1204
1205 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
1206         {
1207         long l;
1208
1209         if (p != NULL)
1210                 {
1211                 l=c->id;
1212                 if ((l & 0xff000000) != 0x03000000) return(0);
1213                 p[0]=((unsigned char)(l>> 8L))&0xFF;
1214                 p[1]=((unsigned char)(l     ))&0xFF;
1215                 }
1216         return(2);
1217         }
1218
1219 SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *have,
1220              STACK_OF(SSL_CIPHER) *pref)
1221         {
1222         SSL_CIPHER *c,*ret=NULL;
1223         int i,j,ok;
1224         CERT *cert;
1225         unsigned long alg,mask,emask;
1226
1227         /* Let's see which ciphers we can support */
1228         cert=s->cert;
1229
1230         sk_SSL_CIPHER_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
1231
1232 #ifdef CIPHER_DEBUG
1233         printf("Have %d from %p:\n", sk_SSL_CIPHER_num(pref), pref);
1234         for(i=0 ; i < sk_SSL_CIPHER_num(pref) ; ++i)
1235             {
1236             c=sk_SSL_CIPHER_value(pref,i);
1237             printf("%p:%s\n",c,c->name);
1238             }
1239 #endif
1240
1241         for (i=0; i<sk_SSL_CIPHER_num(have); i++)
1242                 {
1243                 c=sk_SSL_CIPHER_value(have,i);
1244
1245                 ssl_set_cert_masks(cert,c);
1246                 mask=cert->mask;
1247                 emask=cert->export_mask;
1248
1249 #ifdef KSSL_DEBUG
1250                 printf("ssl3_choose_cipher %d alg= %lx\n", i,c->algorithms);
1251 #endif    /* KSSL_DEBUG */
1252
1253                 alg=c->algorithms&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1254                 if (SSL_C_IS_EXPORT(c))
1255                         {
1256                         ok=((alg & emask) == alg)?1:0;
1257 #ifdef CIPHER_DEBUG
1258                         printf("%d:[%08lX:%08lX]%p:%s (export)\n",ok,alg,emask,
1259                                c,c->name);
1260 #endif
1261                         }
1262                 else
1263                         {
1264                         ok=((alg & mask) == alg)?1:0;
1265 #ifdef CIPHER_DEBUG
1266                         printf("%d:[%08lX:%08lX]%p:%s\n",ok,alg,mask,c,
1267                                c->name);
1268 #endif
1269                         }
1270
1271                 if (!ok) continue;
1272
1273                 j=sk_SSL_CIPHER_find(pref,c);
1274                 if (j >= 0)
1275                         {
1276                         ret=sk_SSL_CIPHER_value(pref,j);
1277                         break;
1278                         }
1279                 }
1280         return(ret);
1281         }
1282
1283 int ssl3_get_req_cert_type(SSL *s, unsigned char *p)
1284         {
1285         int ret=0;
1286         unsigned long alg;
1287
1288         alg=s->s3->tmp.new_cipher->algorithms;
1289
1290 #ifndef NO_DH
1291         if (alg & (SSL_kDHr|SSL_kEDH))
1292                 {
1293 #  ifndef NO_RSA
1294                 p[ret++]=SSL3_CT_RSA_FIXED_DH;
1295 #  endif
1296 #  ifndef NO_DSA
1297                 p[ret++]=SSL3_CT_DSS_FIXED_DH;
1298 #  endif
1299                 }
1300         if ((s->version == SSL3_VERSION) &&
1301                 (alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr)))
1302                 {
1303 #  ifndef NO_RSA
1304                 p[ret++]=SSL3_CT_RSA_EPHEMERAL_DH;
1305 #  endif
1306 #  ifndef NO_DSA
1307                 p[ret++]=SSL3_CT_DSS_EPHEMERAL_DH;
1308 #  endif
1309                 }
1310 #endif /* !NO_DH */
1311 #ifndef NO_RSA
1312         p[ret++]=SSL3_CT_RSA_SIGN;
1313 #endif
1314 #ifndef NO_DSA
1315         p[ret++]=SSL3_CT_DSS_SIGN;
1316 #endif
1317         return(ret);
1318         }
1319
1320 int ssl3_shutdown(SSL *s)
1321         {
1322
1323         /* Don't do anything much if we have not done the handshake or
1324          * we don't want to send messages :-) */
1325         if ((s->quiet_shutdown) || (s->state == SSL_ST_BEFORE))
1326                 {
1327                 s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1328                 return(1);
1329                 }
1330
1331         if (!(s->shutdown & SSL_SENT_SHUTDOWN))
1332                 {
1333                 s->shutdown|=SSL_SENT_SHUTDOWN;
1334 #if 1
1335                 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_CLOSE_NOTIFY);
1336 #endif
1337                 /* our shutdown alert has been sent now, and if it still needs
1338                  * to be written, s->s3->alert_dispatch will be true */
1339                 }
1340         else if (s->s3->alert_dispatch)
1341                 {
1342                 /* resend it if not sent */
1343 #if 1
1344                 ssl3_dispatch_alert(s);
1345 #endif
1346                 }
1347         else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
1348                 {
1349                 /* If we are waiting for a close from our peer, we are closed */
1350                 ssl3_read_bytes(s,0,NULL,0,0);
1351                 }
1352
1353         if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
1354                 !s->s3->alert_dispatch)
1355                 return(1);
1356         else
1357                 return(0);
1358         }
1359
1360 int ssl3_write(SSL *s, const void *buf, int len)
1361         {
1362         int ret,n;
1363
1364 #if 0
1365         if (s->shutdown & SSL_SEND_SHUTDOWN)
1366                 {
1367                 s->rwstate=SSL_NOTHING;
1368                 return(0);
1369                 }
1370 #endif
1371         clear_sys_error();
1372         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1373
1374         /* This is an experimental flag that sends the
1375          * last handshake message in the same packet as the first
1376          * use data - used to see if it helps the TCP protocol during
1377          * session-id reuse */
1378         /* The second test is because the buffer may have been removed */
1379         if ((s->s3->flags & SSL3_FLAGS_POP_BUFFER) && (s->wbio == s->bbio))
1380                 {
1381                 /* First time through, we write into the buffer */
1382                 if (s->s3->delay_buf_pop_ret == 0)
1383                         {
1384                         ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1385                                              buf,len);
1386                         if (ret <= 0) return(ret);
1387
1388                         s->s3->delay_buf_pop_ret=ret;
1389                         }
1390
1391                 s->rwstate=SSL_WRITING;
1392                 n=BIO_flush(s->wbio);
1393                 if (n <= 0) return(n);
1394                 s->rwstate=SSL_NOTHING;
1395
1396                 /* We have flushed the buffer, so remove it */
1397                 ssl_free_wbio_buffer(s);
1398                 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
1399
1400                 ret=s->s3->delay_buf_pop_ret;
1401                 s->s3->delay_buf_pop_ret=0;
1402                 }
1403         else
1404                 {
1405                 ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1406                                      buf,len);
1407                 if (ret <= 0) return(ret);
1408                 }
1409
1410         return(ret);
1411         }
1412
1413 static int ssl3_read_internal(SSL *s, void *buf, int len, int peek)
1414         {
1415         int ret;
1416
1417         clear_sys_error();
1418         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1419         s->s3->in_read_app_data=1;
1420         ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
1421         if ((ret == -1) && (s->s3->in_read_app_data == 0))
1422                 {
1423                 /* ssl3_read_bytes decided to call s->handshake_func, which
1424                  * called ssl3_read_bytes to read handshake data.
1425                  * However, ssl3_read_bytes actually found application data
1426                  * and thinks that application data makes sense here (signalled
1427                  * by resetting 'in_read_app_data', strangely); so disable
1428                  * handshake processing and try to read application data again. */
1429                 s->in_handshake++;
1430                 ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
1431                 s->in_handshake--;
1432                 }
1433         else
1434                 s->s3->in_read_app_data=0;
1435
1436         return(ret);
1437         }
1438
1439 int ssl3_read(SSL *s, void *buf, int len)
1440         {
1441         return ssl3_read_internal(s, buf, len, 0);
1442         }
1443
1444 int ssl3_peek(SSL *s, char *buf, int len)
1445         {
1446         return ssl3_read_internal(s, buf, len, 1);
1447         }
1448
1449 int ssl3_renegotiate(SSL *s)
1450         {
1451         if (s->handshake_func == NULL)
1452                 return(1);
1453
1454         if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
1455                 return(0);
1456
1457         s->s3->renegotiate=1;
1458         return(1);
1459         }
1460
1461 int ssl3_renegotiate_check(SSL *s)
1462         {
1463         int ret=0;
1464
1465         if (s->s3->renegotiate)
1466                 {
1467                 if (    (s->s3->rbuf.left == 0) &&
1468                         (s->s3->wbuf.left == 0) &&
1469                         !SSL_in_init(s))
1470                         {
1471 /*
1472 if we are the server, and we have sent a 'RENEGOTIATE' message, we
1473 need to go to SSL_ST_ACCEPT.
1474 */
1475                         /* SSL_ST_ACCEPT */
1476                         s->state=SSL_ST_RENEGOTIATE;
1477                         s->s3->renegotiate=0;
1478                         s->s3->num_renegotiations++;
1479                         s->s3->total_renegotiations++;
1480                         ret=1;
1481                         }
1482                 }
1483         return(ret);
1484         }
1485