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 #endif
 712
 713 /* end of list */
 714         };
 715
 716 static SSL3_ENC_METHOD SSLv3_enc_data={
 717         ssl3_enc,
 718         ssl3_mac,
 719         ssl3_setup_key_block,
 720         ssl3_generate_master_secret,
 721         ssl3_change_cipher_state,
 722         ssl3_final_finish_mac,
 723         MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
 724         ssl3_cert_verify_mac,
 725         SSL3_MD_CLIENT_FINISHED_CONST,4,
 726         SSL3_MD_SERVER_FINISHED_CONST,4,
 727         ssl3_alert_code,
 728         };
 729
 730 static SSL_METHOD SSLv3_data= {
 731         SSL3_VERSION,
 732         ssl3_new,
 733         ssl3_clear,
 734         ssl3_free,
 735         ssl_undefined_function,
 736         ssl_undefined_function,
 737         ssl3_read,
 738         ssl3_peek,
 739         ssl3_write,
 740         ssl3_shutdown,
 741         ssl3_renegotiate,
 742         ssl3_renegotiate_check,
 743         ssl3_ctrl,
 744         ssl3_ctx_ctrl,
 745         ssl3_get_cipher_by_char,
 746         ssl3_put_cipher_by_char,
 747         ssl3_pending,
 748         ssl3_num_ciphers,
 749         ssl3_get_cipher,
 750         ssl_bad_method,
 751         ssl3_default_timeout,
 752         &SSLv3_enc_data,
 753         ssl_undefined_function,
 754         ssl3_callback_ctrl,
 755         ssl3_ctx_callback_ctrl,
 756         };
 757
 758 static long ssl3_default_timeout(void)
 759         {
 760         /* 2 hours, the 24 hours mentioned in the SSLv3 spec
 761          * is way too long for http, the cache would over fill */
 762         return(60*60*2);
 763         }
 764
 765 SSL_METHOD *sslv3_base_method(void)
 766         {
 767         return(&SSLv3_data);
 768         }
 769
 770 int ssl3_num_ciphers(void)
 771         {
 772         return(SSL3_NUM_CIPHERS);
 773         }
 774
 775 SSL_CIPHER *ssl3_get_cipher(unsigned int u)
 776         {
 777         if (u < SSL3_NUM_CIPHERS)
 778                 return(&(ssl3_ciphers[SSL3_NUM_CIPHERS-1-u]));
 779         else
 780                 return(NULL);
 781         }
 782
 783 int ssl3_pending(SSL *s)
 784         {
 785         /* The problem is that it may not be the correct record type */
 786         return(s->s3->rrec.length); /* FIXME */
 787         }
 788
 789 int ssl3_new(SSL *s)
 790         {
 791         SSL3_STATE *s3;
 792
 793         if ((s3=OPENSSL_malloc(sizeof *s3)) == NULL) goto err;
 794         memset(s3,0,sizeof *s3);
 795
 796         s->s3=s3;
 797
 798         s->method->ssl_clear(s);
 799         return(1);
 800 err:
 801         return(0);
 802         }
 803
 804 void ssl3_free(SSL *s)
 805         {
 806         if(s == NULL)
 807             return;
 808
 809         ssl3_cleanup_key_block(s);
 810         if (s->s3->rbuf.buf != NULL)
 811                 OPENSSL_free(s->s3->rbuf.buf);
 812         if (s->s3->wbuf.buf != NULL)
 813                 OPENSSL_free(s->s3->wbuf.buf);
 814         if (s->s3->rrec.comp != NULL)
 815                 OPENSSL_free(s->s3->rrec.comp);
 816 #ifndef NO_DH
 817         if (s->s3->tmp.dh != NULL)
 818                 DH_free(s->s3->tmp.dh);
 819 #endif
 820         if (s->s3->tmp.ca_names != NULL)
 821                 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
 822         memset(s->s3,0,sizeof *s->s3);
 823         OPENSSL_free(s->s3);
 824         s->s3=NULL;
 825         }
 826
 827 void ssl3_clear(SSL *s)
 828         {
 829         unsigned char *rp,*wp;
 830
 831         ssl3_cleanup_key_block(s);
 832         if (s->s3->tmp.ca_names != NULL)
 833                 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
 834
 835         if (s->s3->rrec.comp != NULL)
 836                 {
 837                 OPENSSL_free(s->s3->rrec.comp);
 838                 s->s3->rrec.comp=NULL;
 839                 }
 840 #ifndef NO_DH
 841         if (s->s3->tmp.dh != NULL)
 842                 DH_free(s->s3->tmp.dh);
 843 #endif
 844
 845         rp=s->s3->rbuf.buf;
 846         wp=s->s3->wbuf.buf;
 847
 848         memset(s->s3,0,sizeof *s->s3);
 849         if (rp != NULL) s->s3->rbuf.buf=rp;
 850         if (wp != NULL) s->s3->wbuf.buf=wp;
 851
 852         ssl_free_wbio_buffer(s);
 853
 854         s->packet_length=0;
 855         s->s3->renegotiate=0;
 856         s->s3->total_renegotiations=0;
 857         s->s3->num_renegotiations=0;
 858         s->s3->in_read_app_data=0;
 859         s->version=SSL3_VERSION;
 860         }
 861
 862 long ssl3_ctrl(SSL *s, int cmd, long larg, char *parg)
 863         {
 864         int ret=0;
 865
 866 #if !defined(NO_DSA) || !defined(NO_RSA)
 867         if (
 868 #ifndef NO_RSA
 869             cmd == SSL_CTRL_SET_TMP_RSA ||
 870             cmd == SSL_CTRL_SET_TMP_RSA_CB ||
 871 #endif
 872 #ifndef NO_DSA
 873             cmd == SSL_CTRL_SET_TMP_DH ||
 874             cmd == SSL_CTRL_SET_TMP_DH_CB ||
 875 #endif
 876                 0)
 877                 {
 878                 if (!ssl_cert_inst(&s->cert))
 879                         {
 880                         SSLerr(SSL_F_SSL3_CTRL, ERR_R_MALLOC_FAILURE);
 881                         return(0);
 882                         }
 883                 }
 884 #endif
 885
 886         switch (cmd)
 887                 {
 888         case SSL_CTRL_GET_SESSION_REUSED:
 889                 ret=s->hit;
 890                 break;
 891         case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
 892                 break;
 893         case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
 894                 ret=s->s3->num_renegotiations;
 895                 break;
 896         case SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS:
 897                 ret=s->s3->num_renegotiations;
 898                 s->s3->num_renegotiations=0;
 899                 break;
 900         case SSL_CTRL_GET_TOTAL_RENEGOTIATIONS:
 901                 ret=s->s3->total_renegotiations;
 902                 break;
 903         case SSL_CTRL_GET_FLAGS:
 904                 ret=(int)(s->s3->flags);
 905                 break;
 906 #ifndef NO_RSA
 907         case SSL_CTRL_NEED_TMP_RSA:
 908                 if ((s->cert != NULL) && (s->cert->rsa_tmp == NULL) &&
 909                     ((s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
 910                      (EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8))))
 911                         ret = 1;
 912                 break;
 913         case SSL_CTRL_SET_TMP_RSA:
 914                 {
 915                         RSA *rsa = (RSA *)parg;
 916                         if (rsa == NULL)
 917                                 {
 918                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
 919                                 return(ret);
 920                                 }
 921                         if ((rsa = RSAPrivateKey_dup(rsa)) == NULL)
 922                                 {
 923                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_RSA_LIB);
 924                                 return(ret);
 925                                 }
 926                         if (s->cert->rsa_tmp != NULL)
 927                                 RSA_free(s->cert->rsa_tmp);
 928                         s->cert->rsa_tmp = rsa;
 929                         ret = 1;
 930                 }
 931                 break;
 932         case SSL_CTRL_SET_TMP_RSA_CB:
 933                 {
 934                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
 935                 return(ret);
 936                 }
 937                 break;
 938 #endif
 939 #ifndef NO_DH
 940         case SSL_CTRL_SET_TMP_DH:
 941                 {
 942                         DH *dh = (DH *)parg;
 943                         if (dh == NULL)
 944                                 {
 945                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
 946                                 return(ret);
 947                                 }
 948                         if ((dh = DHparams_dup(dh)) == NULL)
 949                                 {
 950                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
 951                                 return(ret);
 952                                 }
 953                         if (!(s->options & SSL_OP_SINGLE_DH_USE))
 954                                 {
 955                                 if (!DH_generate_key(dh))
 956                                         {
 957                                         DH_free(dh);
 958                                         SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
 959                                         return(ret);
 960                                         }
 961                                 }
 962                         if (s->cert->dh_tmp != NULL)
 963                                 DH_free(s->cert->dh_tmp);
 964                         s->cert->dh_tmp = dh;
 965                         ret = 1;
 966                 }
 967                 break;
 968         case SSL_CTRL_SET_TMP_DH_CB:
 969                 {
 970                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
 971                 return(ret);
 972                 }
 973                 break;
 974 #endif
 975         default:
 976                 break;
 977                 }
 978         return(ret);
 979         }
 980
 981 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)())
 982         {
 983         int ret=0;
 984
 985 #if !defined(NO_DSA) || !defined(NO_RSA)
 986         if (
 987 #ifndef NO_RSA
 988             cmd == SSL_CTRL_SET_TMP_RSA_CB ||
 989 #endif
 990 #ifndef NO_DSA
 991             cmd == SSL_CTRL_SET_TMP_DH_CB ||
 992 #endif
 993                 0)
 994                 {
 995                 if (!ssl_cert_inst(&s->cert))
 996                         {
 997                         SSLerr(SSL_F_SSL3_CALLBACK_CTRL, ERR_R_MALLOC_FAILURE);
 998                         return(0);
 999                         }
1000                 }
1001 #endif
1002
1003         switch (cmd)
1004                 {
1005 #ifndef NO_RSA
1006         case SSL_CTRL_SET_TMP_RSA_CB:
1007                 {
1008                 s->cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))fp;
1009                 }
1010                 break;
1011 #endif
1012 #ifndef NO_DH
1013         case SSL_CTRL_SET_TMP_DH_CB:
1014                 {
1015                 s->cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
1016                 }
1017                 break;
1018 #endif
1019         default:
1020                 break;
1021                 }
1022         return(ret);
1023         }
1024
1025 long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, char *parg)
1026         {
1027         CERT *cert;
1028
1029         cert=ctx->cert;
1030
1031         switch (cmd)
1032                 {
1033 #ifndef NO_RSA
1034         case SSL_CTRL_NEED_TMP_RSA:
1035                 if (    (cert->rsa_tmp == NULL) &&
1036                         ((cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
1037                          (EVP_PKEY_size(cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8)))
1038                         )
1039                         return(1);
1040                 else
1041                         return(0);
1042                 /* break; */
1043         case SSL_CTRL_SET_TMP_RSA:
1044                 {
1045                 RSA *rsa;
1046                 int i;
1047
1048                 rsa=(RSA *)parg;
1049                 i=1;
1050                 if (rsa == NULL)
1051                         i=0;
1052                 else
1053                         {
1054                         if ((rsa=RSAPrivateKey_dup(rsa)) == NULL)
1055                                 i=0;
1056                         }
1057                 if (!i)
1058                         {
1059                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_RSA_LIB);
1060                         return(0);
1061                         }
1062                 else
1063                         {
1064                         if (cert->rsa_tmp != NULL)
1065                                 RSA_free(cert->rsa_tmp);
1066                         cert->rsa_tmp=rsa;
1067                         return(1);
1068                         }
1069                 }
1070                 /* break; */
1071         case SSL_CTRL_SET_TMP_RSA_CB:
1072                 {
1073                 SSLerr(SSL_F_SSL3_CTX_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1074                 return(0);
1075                 }
1076                 break;
1077 #endif
1078 #ifndef NO_DH
1079         case SSL_CTRL_SET_TMP_DH:
1080                 {
1081                 DH *new=NULL,*dh;
1082
1083                 dh=(DH *)parg;
1084                 if ((new=DHparams_dup(dh)) == NULL)
1085                         {
1086                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
1087                         return 0;
1088                         }
1089                 if (!(ctx->options & SSL_OP_SINGLE_DH_USE))
1090                         {
1091                         if (!DH_generate_key(new))
1092                                 {
1093                                 SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
1094                                 DH_free(new);
1095                                 return 0;
1096                                 }
1097                         }
1098                 if (cert->dh_tmp != NULL)
1099                         DH_free(cert->dh_tmp);
1100                 cert->dh_tmp=new;
1101                 return 1;
1102                 }
1103                 /*break; */
1104         case SSL_CTRL_SET_TMP_DH_CB:
1105                 {
1106                 SSLerr(SSL_F_SSL3_CTX_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1107                 return(0);
1108                 }
1109                 break;
1110 #endif
1111         /* A Thawte special :-) */
1112         case SSL_CTRL_EXTRA_CHAIN_CERT:
1113                 if (ctx->extra_certs == NULL)
1114                         {
1115                         if ((ctx->extra_certs=sk_X509_new_null()) == NULL)
1116                                 return(0);
1117                         }
1118                 sk_X509_push(ctx->extra_certs,(X509 *)parg);
1119                 break;
1120
1121         default:
1122                 return(0);
1123                 }
1124         return(1);
1125         }
1126
1127 long ssl3_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
1128         {
1129         CERT *cert;
1130
1131         cert=ctx->cert;
1132
1133         switch (cmd)
1134                 {
1135 #ifndef NO_RSA
1136         case SSL_CTRL_SET_TMP_RSA_CB:
1137                 {
1138                 cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))fp;
1139                 }
1140                 break;
1141 #endif
1142 #ifndef NO_DH
1143         case SSL_CTRL_SET_TMP_DH_CB:
1144                 {
1145                 cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
1146                 }
1147                 break;
1148 #endif
1149         default:
1150                 return(0);
1151                 }
1152         return(1);
1153         }
1154
1155 /* This function needs to check if the ciphers required are actually
1156  * available */
1157 SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p)
1158         {
1159         static int init=1;
1160         static SSL_CIPHER *sorted[SSL3_NUM_CIPHERS];
1161         SSL_CIPHER c,*cp= &c,**cpp;
1162         unsigned long id;
1163         int i;
1164
1165         if (init)
1166                 {
1167                 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
1168
1169                 for (i=0; i<SSL3_NUM_CIPHERS; i++)
1170                         sorted[i]= &(ssl3_ciphers[i]);
1171
1172                 qsort(  (char *)sorted,
1173                         SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
1174                         FP_ICC ssl_cipher_ptr_id_cmp);
1175
1176                 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
1177
1178                 init=0;
1179                 }
1180
1181         id=0x03000000L|((unsigned long)p[0]<<8L)|(unsigned long)p[1];
1182         c.id=id;
1183         cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp,
1184                 (char *)sorted,
1185                 SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
1186                 FP_ICC ssl_cipher_ptr_id_cmp);
1187         if ((cpp == NULL) || !(*cpp)->valid)
1188                 return(NULL);
1189         else
1190                 return(*cpp);
1191         }
1192
1193 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
1194         {
1195         long l;
1196
1197         if (p != NULL)
1198                 {
1199                 l=c->id;
1200                 if ((l & 0xff000000) != 0x03000000) return(0);
1201                 p[0]=((unsigned char)(l>> 8L))&0xFF;
1202                 p[1]=((unsigned char)(l     ))&0xFF;
1203                 }
1204         return(2);
1205         }
1206
1207 SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *have,
1208              STACK_OF(SSL_CIPHER) *pref)
1209         {
1210         SSL_CIPHER *c,*ret=NULL;
1211         int i,j,ok;
1212         CERT *cert;
1213         unsigned long alg,mask,emask;
1214
1215         /* Let's see which ciphers we can support */
1216         cert=s->cert;
1217
1218         sk_SSL_CIPHER_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
1219
1220 #ifdef CIPHER_DEBUG
1221         printf("Have %d from %p:\n", sk_SSL_CIPHER_num(pref), pref);
1222         for(i=0 ; i < sk_SSL_CIPHER_num(pref) ; ++i)
1223             {
1224             c=sk_SSL_CIPHER_value(pref,i);
1225             printf("%p:%s\n",c,c->name);
1226             }
1227 #endif
1228
1229         for (i=0; i<sk_SSL_CIPHER_num(have); i++)
1230                 {
1231                 c=sk_SSL_CIPHER_value(have,i);
1232
1233                 ssl_set_cert_masks(cert,c);
1234                 mask=cert->mask;
1235                 emask=cert->export_mask;
1236
1237 #ifdef KSSL_DEBUG
1238                 printf("ssl3_choose_cipher %d alg= %lx\n", i,c->algorithms);
1239 #endif    /* KSSL_DEBUG */
1240
1241                 alg=c->algorithms&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1242                 if (SSL_C_IS_EXPORT(c))
1243                         {
1244                         ok=((alg & emask) == alg)?1:0;
1245 #ifdef CIPHER_DEBUG
1246                         printf("%d:[%08lX:%08lX]%p:%s (export)\n",ok,alg,emask,
1247                                c,c->name);
1248 #endif
1249                         }
1250                 else
1251                         {
1252                         ok=((alg & mask) == alg)?1:0;
1253 #ifdef CIPHER_DEBUG
1254                         printf("%d:[%08lX:%08lX]%p:%s\n",ok,alg,mask,c,
1255                                c->name);
1256 #endif
1257                         }
1258
1259                 if (!ok) continue;
1260
1261                 j=sk_SSL_CIPHER_find(pref,c);
1262                 if (j >= 0)
1263                         {
1264                         ret=sk_SSL_CIPHER_value(pref,j);
1265                         break;
1266                         }
1267                 }
1268         return(ret);
1269         }
1270
1271 int ssl3_get_req_cert_type(SSL *s, unsigned char *p)
1272         {
1273         int ret=0;
1274         unsigned long alg;
1275
1276         alg=s->s3->tmp.new_cipher->algorithms;
1277
1278 #ifndef NO_DH
1279         if (alg & (SSL_kDHr|SSL_kEDH))
1280                 {
1281 #  ifndef NO_RSA
1282                 p[ret++]=SSL3_CT_RSA_FIXED_DH;
1283 #  endif
1284 #  ifndef NO_DSA
1285                 p[ret++]=SSL3_CT_DSS_FIXED_DH;
1286 #  endif
1287                 }
1288         if ((s->version == SSL3_VERSION) &&
1289                 (alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr)))
1290                 {
1291 #  ifndef NO_RSA
1292                 p[ret++]=SSL3_CT_RSA_EPHEMERAL_DH;
1293 #  endif
1294 #  ifndef NO_DSA
1295                 p[ret++]=SSL3_CT_DSS_EPHEMERAL_DH;
1296 #  endif
1297                 }
1298 #endif /* !NO_DH */
1299 #ifndef NO_RSA
1300         p[ret++]=SSL3_CT_RSA_SIGN;
1301 #endif
1302 #ifndef NO_DSA
1303         p[ret++]=SSL3_CT_DSS_SIGN;
1304 #endif
1305         return(ret);
1306         }
1307
1308 int ssl3_shutdown(SSL *s)
1309         {
1310
1311         /* Don't do anything much if we have not done the handshake or
1312          * we don't want to send messages :-) */
1313         if ((s->quiet_shutdown) || (s->state == SSL_ST_BEFORE))
1314                 {
1315                 s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1316                 return(1);
1317                 }
1318
1319         if (!(s->shutdown & SSL_SENT_SHUTDOWN))
1320                 {
1321                 s->shutdown|=SSL_SENT_SHUTDOWN;
1322 #if 1
1323                 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_CLOSE_NOTIFY);
1324 #endif
1325                 /* our shutdown alert has been sent now, and if it still needs
1326                  * to be written, s->s3->alert_dispatch will be true */
1327                 }
1328         else if (s->s3->alert_dispatch)
1329                 {
1330                 /* resend it if not sent */
1331 #if 1
1332                 ssl3_dispatch_alert(s);
1333 #endif
1334                 }
1335         else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
1336                 {
1337                 /* If we are waiting for a close from our peer, we are closed */
1338                 ssl3_read_bytes(s,0,NULL,0,0);
1339                 }
1340
1341         if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
1342                 !s->s3->alert_dispatch)
1343                 return(1);
1344         else
1345                 return(0);
1346         }
1347
1348 int ssl3_write(SSL *s, const void *buf, int len)
1349         {
1350         int ret,n;
1351
1352 #if 0
1353         if (s->shutdown & SSL_SEND_SHUTDOWN)
1354                 {
1355                 s->rwstate=SSL_NOTHING;
1356                 return(0);
1357                 }
1358 #endif
1359         clear_sys_error();
1360         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1361
1362         /* This is an experimental flag that sends the
1363          * last handshake message in the same packet as the first
1364          * use data - used to see if it helps the TCP protocol during
1365          * session-id reuse */
1366         /* The second test is because the buffer may have been removed */
1367         if ((s->s3->flags & SSL3_FLAGS_POP_BUFFER) && (s->wbio == s->bbio))
1368                 {
1369                 /* First time through, we write into the buffer */
1370                 if (s->s3->delay_buf_pop_ret == 0)
1371                         {
1372                         ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1373                                              buf,len);
1374                         if (ret <= 0) return(ret);
1375
1376                         s->s3->delay_buf_pop_ret=ret;
1377                         }
1378
1379                 s->rwstate=SSL_WRITING;
1380                 n=BIO_flush(s->wbio);
1381                 if (n <= 0) return(n);
1382                 s->rwstate=SSL_NOTHING;
1383
1384                 /* We have flushed the buffer, so remove it */
1385                 ssl_free_wbio_buffer(s);
1386                 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
1387
1388                 ret=s->s3->delay_buf_pop_ret;
1389                 s->s3->delay_buf_pop_ret=0;
1390                 }
1391         else
1392                 {
1393                 ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1394                                      buf,len);
1395                 if (ret <= 0) return(ret);
1396                 }
1397
1398         return(ret);
1399         }
1400
1401 static int ssl3_read_internal(SSL *s, void *buf, int len, int peek)
1402         {
1403         int ret;
1404
1405         clear_sys_error();
1406         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1407         s->s3->in_read_app_data=1;
1408         ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
1409         if ((ret == -1) && (s->s3->in_read_app_data == 0))
1410                 {
1411                 /* ssl3_read_bytes decided to call s->handshake_func, which
1412                  * called ssl3_read_bytes to read handshake data.
1413                  * However, ssl3_read_bytes actually found application data
1414                  * and thinks that application data makes sense here (signalled
1415                  * by resetting 'in_read_app_data', strangely); so disable
1416                  * handshake processing and try to read application data again. */
1417                 s->in_handshake++;
1418                 ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
1419                 s->in_handshake--;
1420                 }
1421         else
1422                 s->s3->in_read_app_data=0;
1423
1424         return(ret);
1425         }
1426
1427 int ssl3_read(SSL *s, void *buf, int len)
1428         {
1429         return ssl3_read_internal(s, buf, len, 0);
1430         }
1431
1432 int ssl3_peek(SSL *s, char *buf, int len)
1433         {
1434         return ssl3_read_internal(s, buf, len, 1);
1435         }
1436
1437 int ssl3_renegotiate(SSL *s)
1438         {
1439         if (s->handshake_func == NULL)
1440                 return(1);
1441
1442         if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
1443                 return(0);
1444
1445         s->s3->renegotiate=1;
1446         return(1);
1447         }
1448
1449 int ssl3_renegotiate_check(SSL *s)
1450         {
1451         int ret=0;
1452
1453         if (s->s3->renegotiate)
1454                 {
1455                 if (    (s->s3->rbuf.left == 0) &&
1456                         (s->s3->wbuf.left == 0) &&
1457                         !SSL_in_init(s))
1458                         {
1459 /*
1460 if we are the server, and we have sent a 'RENEGOTIATE' message, we
1461 need to go to SSL_ST_ACCEPT.
1462 */
1463                         /* SSL_ST_ACCEPT */
1464                         s->state=SSL_ST_RENEGOTIATE;
1465                         s->s3->renegotiate=0;
1466                         s->s3->num_renegotiations++;
1467                         s->s3->total_renegotiations++;
1468                         ret=1;
1469                         }
1470                 }
1471         return(ret);
1472         }
1473