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 #if TLS1_ALLOW_EXPERIMENTAL_CIPHERSUITES
 530         /* New TLS Export CipherSuites */
 531         /* Cipher 60 */
 532             {
 533             1,
 534             TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_MD5,
 535             TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_MD5,
 536             SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_TLSV1,
 537             SSL_EXPORT|SSL_EXP56,
 538             0,
 539             56,
 540             128,
 541             SSL_ALL_CIPHERS,
 542             SSL_ALL_STRENGTHS,
 543             },
 544         /* Cipher 61 */
 545             {
 546             1,
 547             TLS1_TXT_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5,
 548             TLS1_CK_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5,
 549             SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_TLSV1,
 550             SSL_EXPORT|SSL_EXP56,
 551             0,
 552             56,
 553             128,
 554             SSL_ALL_CIPHERS,
 555             SSL_ALL_STRENGTHS,
 556             },
 557         /* Cipher 62 */
 558             {
 559             1,
 560             TLS1_TXT_RSA_EXPORT1024_WITH_DES_CBC_SHA,
 561             TLS1_CK_RSA_EXPORT1024_WITH_DES_CBC_SHA,
 562             SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA|SSL_TLSV1,
 563             SSL_EXPORT|SSL_EXP56,
 564             0,
 565             56,
 566             56,
 567             SSL_ALL_CIPHERS,
 568             SSL_ALL_STRENGTHS,
 569             },
 570         /* Cipher 63 */
 571             {
 572             1,
 573             TLS1_TXT_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA,
 574             TLS1_CK_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA,
 575             SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA|SSL_TLSV1,
 576             SSL_EXPORT|SSL_EXP56,
 577             0,
 578             56,
 579             56,
 580             SSL_ALL_CIPHERS,
 581             SSL_ALL_STRENGTHS,
 582             },
 583         /* Cipher 64 */
 584             {
 585             1,
 586             TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_SHA,
 587             TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_SHA,
 588             SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_SHA|SSL_TLSV1,
 589             SSL_EXPORT|SSL_EXP56,
 590             0,
 591             56,
 592             128,
 593             SSL_ALL_CIPHERS,
 594             SSL_ALL_STRENGTHS,
 595             },
 596         /* Cipher 65 */
 597             {
 598             1,
 599             TLS1_TXT_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA,
 600             TLS1_CK_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA,
 601             SSL_kEDH|SSL_aDSS|SSL_RC4|SSL_SHA|SSL_TLSV1,
 602             SSL_EXPORT|SSL_EXP56,
 603             0,
 604             56,
 605             128,
 606             SSL_ALL_CIPHERS,
 607             SSL_ALL_STRENGTHS,
 608             },
 609         /* Cipher 66 */
 610             {
 611             1,
 612             TLS1_TXT_DHE_DSS_WITH_RC4_128_SHA,
 613             TLS1_CK_DHE_DSS_WITH_RC4_128_SHA,
 614             SSL_kEDH|SSL_aDSS|SSL_RC4|SSL_SHA|SSL_TLSV1,
 615             SSL_NOT_EXP,
 616             0,
 617             128,
 618             128,
 619             SSL_ALL_CIPHERS,
 620             SSL_ALL_STRENGTHS
 621             },
 622 #endif
 623
 624 /* end of list */
 625         };
 626
 627 static SSL3_ENC_METHOD SSLv3_enc_data={
 628         ssl3_enc,
 629         ssl3_mac,
 630         ssl3_setup_key_block,
 631         ssl3_generate_master_secret,
 632         ssl3_change_cipher_state,
 633         ssl3_final_finish_mac,
 634         MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
 635         ssl3_cert_verify_mac,
 636         SSL3_MD_CLIENT_FINISHED_CONST,4,
 637         SSL3_MD_SERVER_FINISHED_CONST,4,
 638         ssl3_alert_code,
 639         };
 640
 641 static SSL_METHOD SSLv3_data= {
 642         SSL3_VERSION,
 643         ssl3_new,
 644         ssl3_clear,
 645         ssl3_free,
 646         ssl_undefined_function,
 647         ssl_undefined_function,
 648         ssl3_read,
 649         ssl3_peek,
 650         ssl3_write,
 651         ssl3_shutdown,
 652         ssl3_renegotiate,
 653         ssl3_renegotiate_check,
 654         ssl3_ctrl,
 655         ssl3_ctx_ctrl,
 656         ssl3_get_cipher_by_char,
 657         ssl3_put_cipher_by_char,
 658         ssl3_pending,
 659         ssl3_num_ciphers,
 660         ssl3_get_cipher,
 661         ssl_bad_method,
 662         ssl3_default_timeout,
 663         &SSLv3_enc_data,
 664         ssl_undefined_function,
 665         ssl3_callback_ctrl,
 666         ssl3_ctx_callback_ctrl,
 667         };
 668
 669 static long ssl3_default_timeout(void)
 670         {
 671         /* 2 hours, the 24 hours mentioned in the SSLv3 spec
 672          * is way too long for http, the cache would over fill */
 673         return(60*60*2);
 674         }
 675
 676 SSL_METHOD *sslv3_base_method(void)
 677         {
 678         return(&SSLv3_data);
 679         }
 680
 681 int ssl3_num_ciphers(void)
 682         {
 683         return(SSL3_NUM_CIPHERS);
 684         }
 685
 686 SSL_CIPHER *ssl3_get_cipher(unsigned int u)
 687         {
 688         if (u < SSL3_NUM_CIPHERS)
 689                 return(&(ssl3_ciphers[SSL3_NUM_CIPHERS-1-u]));
 690         else
 691                 return(NULL);
 692         }
 693
 694 int ssl3_pending(SSL *s)
 695         {
 696         return (s->s3->rrec.type == SSL3_RT_APPLICATION_DATA) ? s->s3->rrec.length : 0;
 697         }
 698
 699 int ssl3_new(SSL *s)
 700         {
 701         SSL3_STATE *s3;
 702
 703         if ((s3=OPENSSL_malloc(sizeof *s3)) == NULL) goto err;
 704         memset(s3,0,sizeof *s3);
 705
 706         s->s3=s3;
 707
 708         s->method->ssl_clear(s);
 709         return(1);
 710 err:
 711         return(0);
 712         }
 713
 714 void ssl3_free(SSL *s)
 715         {
 716         if(s == NULL)
 717             return;
 718
 719         ssl3_cleanup_key_block(s);
 720         if (s->s3->rbuf.buf != NULL)
 721                 OPENSSL_free(s->s3->rbuf.buf);
 722         if (s->s3->wbuf.buf != NULL)
 723                 OPENSSL_free(s->s3->wbuf.buf);
 724         if (s->s3->rrec.comp != NULL)
 725                 OPENSSL_free(s->s3->rrec.comp);
 726 #ifndef NO_DH
 727         if (s->s3->tmp.dh != NULL)
 728                 DH_free(s->s3->tmp.dh);
 729 #endif
 730         if (s->s3->tmp.ca_names != NULL)
 731                 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
 732         memset(s->s3,0,sizeof *s->s3);
 733         OPENSSL_free(s->s3);
 734         s->s3=NULL;
 735         }
 736
 737 void ssl3_clear(SSL *s)
 738         {
 739         unsigned char *rp,*wp;
 740
 741         ssl3_cleanup_key_block(s);
 742         if (s->s3->tmp.ca_names != NULL)
 743                 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
 744
 745         if (s->s3->rrec.comp != NULL)
 746                 {
 747                 OPENSSL_free(s->s3->rrec.comp);
 748                 s->s3->rrec.comp=NULL;
 749                 }
 750 #ifndef NO_DH
 751         if (s->s3->tmp.dh != NULL)
 752                 DH_free(s->s3->tmp.dh);
 753 #endif
 754
 755         rp=s->s3->rbuf.buf;
 756         wp=s->s3->wbuf.buf;
 757
 758         memset(s->s3,0,sizeof *s->s3);
 759         if (rp != NULL) s->s3->rbuf.buf=rp;
 760         if (wp != NULL) s->s3->wbuf.buf=wp;
 761
 762         ssl_free_wbio_buffer(s);
 763
 764         s->packet_length=0;
 765         s->s3->renegotiate=0;
 766         s->s3->total_renegotiations=0;
 767         s->s3->num_renegotiations=0;
 768         s->s3->in_read_app_data=0;
 769         s->version=SSL3_VERSION;
 770         }
 771
 772 long ssl3_ctrl(SSL *s, int cmd, long larg, char *parg)
 773         {
 774         int ret=0;
 775
 776 #if !defined(NO_DSA) || !defined(NO_RSA)
 777         if (
 778 #ifndef NO_RSA
 779             cmd == SSL_CTRL_SET_TMP_RSA ||
 780             cmd == SSL_CTRL_SET_TMP_RSA_CB ||
 781 #endif
 782 #ifndef NO_DSA
 783             cmd == SSL_CTRL_SET_TMP_DH ||
 784             cmd == SSL_CTRL_SET_TMP_DH_CB ||
 785 #endif
 786                 0)
 787                 {
 788                 if (!ssl_cert_inst(&s->cert))
 789                         {
 790                         SSLerr(SSL_F_SSL3_CTRL, ERR_R_MALLOC_FAILURE);
 791                         return(0);
 792                         }
 793                 }
 794 #endif
 795
 796         switch (cmd)
 797                 {
 798         case SSL_CTRL_GET_SESSION_REUSED:
 799                 ret=s->hit;
 800                 break;
 801         case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
 802                 break;
 803         case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
 804                 ret=s->s3->num_renegotiations;
 805                 break;
 806         case SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS:
 807                 ret=s->s3->num_renegotiations;
 808                 s->s3->num_renegotiations=0;
 809                 break;
 810         case SSL_CTRL_GET_TOTAL_RENEGOTIATIONS:
 811                 ret=s->s3->total_renegotiations;
 812                 break;
 813         case SSL_CTRL_GET_FLAGS:
 814                 ret=(int)(s->s3->flags);
 815                 break;
 816 #ifndef NO_RSA
 817         case SSL_CTRL_NEED_TMP_RSA:
 818                 if ((s->cert != NULL) && (s->cert->rsa_tmp == NULL) &&
 819                     ((s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
 820                      (EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8))))
 821                         ret = 1;
 822                 break;
 823         case SSL_CTRL_SET_TMP_RSA:
 824                 {
 825                         RSA *rsa = (RSA *)parg;
 826                         if (rsa == NULL)
 827                                 {
 828                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
 829                                 return(ret);
 830                                 }
 831                         if ((rsa = RSAPrivateKey_dup(rsa)) == NULL)
 832                                 {
 833                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_RSA_LIB);
 834                                 return(ret);
 835                                 }
 836                         if (s->cert->rsa_tmp != NULL)
 837                                 RSA_free(s->cert->rsa_tmp);
 838                         s->cert->rsa_tmp = rsa;
 839                         ret = 1;
 840                 }
 841                 break;
 842         case SSL_CTRL_SET_TMP_RSA_CB:
 843                 {
 844                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
 845                 return(ret);
 846                 }
 847                 break;
 848 #endif
 849 #ifndef NO_DH
 850         case SSL_CTRL_SET_TMP_DH:
 851                 {
 852                         DH *dh = (DH *)parg;
 853                         if (dh == NULL)
 854                                 {
 855                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
 856                                 return(ret);
 857                                 }
 858                         if ((dh = DHparams_dup(dh)) == NULL)
 859                                 {
 860                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
 861                                 return(ret);
 862                                 }
 863                         if (!(s->options & SSL_OP_SINGLE_DH_USE))
 864                                 {
 865                                 if (!DH_generate_key(dh))
 866                                         {
 867                                         DH_free(dh);
 868                                         SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
 869                                         return(ret);
 870                                         }
 871                                 }
 872                         if (s->cert->dh_tmp != NULL)
 873                                 DH_free(s->cert->dh_tmp);
 874                         s->cert->dh_tmp = dh;
 875                         ret = 1;
 876                 }
 877                 break;
 878         case SSL_CTRL_SET_TMP_DH_CB:
 879                 {
 880                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
 881                 return(ret);
 882                 }
 883                 break;
 884 #endif
 885         default:
 886                 break;
 887                 }
 888         return(ret);
 889         }
 890
 891 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)())
 892         {
 893         int ret=0;
 894
 895 #if !defined(NO_DSA) || !defined(NO_RSA)
 896         if (
 897 #ifndef NO_RSA
 898             cmd == SSL_CTRL_SET_TMP_RSA_CB ||
 899 #endif
 900 #ifndef NO_DSA
 901             cmd == SSL_CTRL_SET_TMP_DH_CB ||
 902 #endif
 903                 0)
 904                 {
 905                 if (!ssl_cert_inst(&s->cert))
 906                         {
 907                         SSLerr(SSL_F_SSL3_CALLBACK_CTRL, ERR_R_MALLOC_FAILURE);
 908                         return(0);
 909                         }
 910                 }
 911 #endif
 912
 913         switch (cmd)
 914                 {
 915 #ifndef NO_RSA
 916         case SSL_CTRL_SET_TMP_RSA_CB:
 917                 {
 918                 s->cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))fp;
 919                 }
 920                 break;
 921 #endif
 922 #ifndef NO_DH
 923         case SSL_CTRL_SET_TMP_DH_CB:
 924                 {
 925                 s->cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
 926                 }
 927                 break;
 928 #endif
 929         default:
 930                 break;
 931                 }
 932         return(ret);
 933         }
 934
 935 long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, char *parg)
 936         {
 937         CERT *cert;
 938
 939         cert=ctx->cert;
 940
 941         switch (cmd)
 942                 {
 943 #ifndef NO_RSA
 944         case SSL_CTRL_NEED_TMP_RSA:
 945                 if (    (cert->rsa_tmp == NULL) &&
 946                         ((cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
 947                          (EVP_PKEY_size(cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8)))
 948                         )
 949                         return(1);
 950                 else
 951                         return(0);
 952                 /* break; */
 953         case SSL_CTRL_SET_TMP_RSA:
 954                 {
 955                 RSA *rsa;
 956                 int i;
 957
 958                 rsa=(RSA *)parg;
 959                 i=1;
 960                 if (rsa == NULL)
 961                         i=0;
 962                 else
 963                         {
 964                         if ((rsa=RSAPrivateKey_dup(rsa)) == NULL)
 965                                 i=0;
 966                         }
 967                 if (!i)
 968                         {
 969                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_RSA_LIB);
 970                         return(0);
 971                         }
 972                 else
 973                         {
 974                         if (cert->rsa_tmp != NULL)
 975                                 RSA_free(cert->rsa_tmp);
 976                         cert->rsa_tmp=rsa;
 977                         return(1);
 978                         }
 979                 }
 980                 /* break; */
 981         case SSL_CTRL_SET_TMP_RSA_CB:
 982                 {
 983                 SSLerr(SSL_F_SSL3_CTX_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
 984                 return(0);
 985                 }
 986                 break;
 987 #endif
 988 #ifndef NO_DH
 989         case SSL_CTRL_SET_TMP_DH:
 990                 {
 991                 DH *new=NULL,*dh;
 992
 993                 dh=(DH *)parg;
 994                 if ((new=DHparams_dup(dh)) == NULL)
 995                         {
 996                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
 997                         return 0;
 998                         }
 999                 if (!(ctx->options & SSL_OP_SINGLE_DH_USE))
1000                         {
1001                         if (!DH_generate_key(new))
1002                                 {
1003                                 SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
1004                                 DH_free(new);
1005                                 return 0;
1006                                 }
1007                         }
1008                 if (cert->dh_tmp != NULL)
1009                         DH_free(cert->dh_tmp);
1010                 cert->dh_tmp=new;
1011                 return 1;
1012                 }
1013                 /*break; */
1014         case SSL_CTRL_SET_TMP_DH_CB:
1015                 {
1016                 SSLerr(SSL_F_SSL3_CTX_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1017                 return(0);
1018                 }
1019                 break;
1020 #endif
1021         /* A Thawte special :-) */
1022         case SSL_CTRL_EXTRA_CHAIN_CERT:
1023                 if (ctx->extra_certs == NULL)
1024                         {
1025                         if ((ctx->extra_certs=sk_X509_new_null()) == NULL)
1026                                 return(0);
1027                         }
1028                 sk_X509_push(ctx->extra_certs,(X509 *)parg);
1029                 break;
1030
1031         default:
1032                 return(0);
1033                 }
1034         return(1);
1035         }
1036
1037 long ssl3_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
1038         {
1039         CERT *cert;
1040
1041         cert=ctx->cert;
1042
1043         switch (cmd)
1044                 {
1045 #ifndef NO_RSA
1046         case SSL_CTRL_SET_TMP_RSA_CB:
1047                 {
1048                 cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))fp;
1049                 }
1050                 break;
1051 #endif
1052 #ifndef NO_DH
1053         case SSL_CTRL_SET_TMP_DH_CB:
1054                 {
1055                 cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
1056                 }
1057                 break;
1058 #endif
1059         default:
1060                 return(0);
1061                 }
1062         return(1);
1063         }
1064
1065 /* This function needs to check if the ciphers required are actually
1066  * available */
1067 SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p)
1068         {
1069         static int init=1;
1070         static SSL_CIPHER *sorted[SSL3_NUM_CIPHERS];
1071         SSL_CIPHER c,*cp= &c,**cpp;
1072         unsigned long id;
1073         int i;
1074
1075         if (init)
1076                 {
1077                 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
1078
1079                 for (i=0; i<SSL3_NUM_CIPHERS; i++)
1080                         sorted[i]= &(ssl3_ciphers[i]);
1081
1082                 qsort(  (char *)sorted,
1083                         SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
1084                         FP_ICC ssl_cipher_ptr_id_cmp);
1085
1086                 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
1087
1088                 init=0;
1089                 }
1090
1091         id=0x03000000L|((unsigned long)p[0]<<8L)|(unsigned long)p[1];
1092         c.id=id;
1093         cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp,
1094                 (char *)sorted,
1095                 SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
1096                 FP_ICC ssl_cipher_ptr_id_cmp);
1097         if ((cpp == NULL) || !(*cpp)->valid)
1098                 return(NULL);
1099         else
1100                 return(*cpp);
1101         }
1102
1103 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
1104         {
1105         long l;
1106
1107         if (p != NULL)
1108                 {
1109                 l=c->id;
1110                 if ((l & 0xff000000) != 0x03000000) return(0);
1111                 p[0]=((unsigned char)(l>> 8L))&0xFF;
1112                 p[1]=((unsigned char)(l     ))&0xFF;
1113                 }
1114         return(2);
1115         }
1116
1117 SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *have,
1118              STACK_OF(SSL_CIPHER) *pref)
1119         {
1120         SSL_CIPHER *c,*ret=NULL;
1121         int i,j,ok;
1122         CERT *cert;
1123         unsigned long alg,mask,emask;
1124
1125         /* Let's see which ciphers we can support */
1126         cert=s->cert;
1127
1128         sk_SSL_CIPHER_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
1129
1130 #ifdef CIPHER_DEBUG
1131         printf("Have:\n");
1132         for(i=0 ; i < sk_num(pref) ; ++i)
1133             {
1134             c=(SSL_CIPHER *)sk_value(pref,i);
1135             printf("%p:%s\n",c,c->name);
1136             }
1137 #endif
1138
1139         for (i=0; i<sk_SSL_CIPHER_num(have); i++)
1140                 {
1141                 c=sk_SSL_CIPHER_value(have,i);
1142
1143                 ssl_set_cert_masks(cert,c);
1144                 mask=cert->mask;
1145                 emask=cert->export_mask;
1146
1147                 alg=c->algorithms&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1148                 if (SSL_C_IS_EXPORT(c))
1149                         {
1150                         ok=((alg & emask) == alg)?1:0;
1151 #ifdef CIPHER_DEBUG
1152                         printf("%d:[%08lX:%08lX]%p:%s (export)\n",ok,alg,emask,
1153                                c,c->name);
1154 #endif
1155                         }
1156                 else
1157                         {
1158                         ok=((alg & mask) == alg)?1:0;
1159 #ifdef CIPHER_DEBUG
1160                         printf("%d:[%08lX:%08lX]%p:%s\n",ok,alg,mask,c,
1161                                c->name);
1162 #endif
1163                         }
1164
1165                 if (!ok) continue;
1166
1167                 j=sk_SSL_CIPHER_find(pref,c);
1168                 if (j >= 0)
1169                         {
1170                         ret=sk_SSL_CIPHER_value(pref,j);
1171                         break;
1172                         }
1173                 }
1174         return(ret);
1175         }
1176
1177 int ssl3_get_req_cert_type(SSL *s, unsigned char *p)
1178         {
1179         int ret=0;
1180         unsigned long alg;
1181
1182         alg=s->s3->tmp.new_cipher->algorithms;
1183
1184 #ifndef NO_DH
1185         if (alg & (SSL_kDHr|SSL_kEDH))
1186                 {
1187 #  ifndef NO_RSA
1188                 p[ret++]=SSL3_CT_RSA_FIXED_DH;
1189 #  endif
1190 #  ifndef NO_DSA
1191                 p[ret++]=SSL3_CT_DSS_FIXED_DH;
1192 #  endif
1193                 }
1194         if ((s->version == SSL3_VERSION) &&
1195                 (alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr)))
1196                 {
1197 #  ifndef NO_RSA
1198                 p[ret++]=SSL3_CT_RSA_EPHEMERAL_DH;
1199 #  endif
1200 #  ifndef NO_DSA
1201                 p[ret++]=SSL3_CT_DSS_EPHEMERAL_DH;
1202 #  endif
1203                 }
1204 #endif /* !NO_DH */
1205 #ifndef NO_RSA
1206         p[ret++]=SSL3_CT_RSA_SIGN;
1207 #endif
1208 #ifndef NO_DSA
1209         p[ret++]=SSL3_CT_DSS_SIGN;
1210 #endif
1211         return(ret);
1212         }
1213
1214 int ssl3_shutdown(SSL *s)
1215         {
1216
1217         /* Don't do anything much if we have not done the handshake or
1218          * we don't want to send messages :-) */
1219         if ((s->quiet_shutdown) || (s->state == SSL_ST_BEFORE))
1220                 {
1221                 s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1222                 return(1);
1223                 }
1224
1225         if (!(s->shutdown & SSL_SENT_SHUTDOWN))
1226                 {
1227                 s->shutdown|=SSL_SENT_SHUTDOWN;
1228 #if 1
1229                 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_CLOSE_NOTIFY);
1230 #endif
1231                 /* our shutdown alert has been sent now, and if it still needs
1232                  * to be written, s->s3->alert_dispatch will be true */
1233                 }
1234         else if (s->s3->alert_dispatch)
1235                 {
1236                 /* resend it if not sent */
1237 #if 1
1238                 ssl3_dispatch_alert(s);
1239 #endif
1240                 }
1241         else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
1242                 {
1243                 /* If we are waiting for a close from our peer, we are closed */
1244                 ssl3_read_bytes(s,0,NULL,0,0);
1245                 }
1246
1247         if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
1248                 !s->s3->alert_dispatch)
1249                 return(1);
1250         else
1251                 return(0);
1252         }
1253
1254 int ssl3_write(SSL *s, const void *buf, int len)
1255         {
1256         int ret,n;
1257
1258 #if 0
1259         if (s->shutdown & SSL_SEND_SHUTDOWN)
1260                 {
1261                 s->rwstate=SSL_NOTHING;
1262                 return(0);
1263                 }
1264 #endif
1265         clear_sys_error();
1266         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1267
1268         /* This is an experimental flag that sends the
1269          * last handshake message in the same packet as the first
1270          * use data - used to see if it helps the TCP protocol during
1271          * session-id reuse */
1272         /* The second test is because the buffer may have been removed */
1273         if ((s->s3->flags & SSL3_FLAGS_POP_BUFFER) && (s->wbio == s->bbio))
1274                 {
1275                 /* First time through, we write into the buffer */
1276                 if (s->s3->delay_buf_pop_ret == 0)
1277                         {
1278                         ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1279                                              buf,len);
1280                         if (ret <= 0) return(ret);
1281
1282                         s->s3->delay_buf_pop_ret=ret;
1283                         }
1284
1285                 s->rwstate=SSL_WRITING;
1286                 n=BIO_flush(s->wbio);
1287                 if (n <= 0) return(n);
1288                 s->rwstate=SSL_NOTHING;
1289
1290                 /* We have flushed the buffer, so remove it */
1291                 ssl_free_wbio_buffer(s);
1292                 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
1293
1294                 ret=s->s3->delay_buf_pop_ret;
1295                 s->s3->delay_buf_pop_ret=0;
1296                 }
1297         else
1298                 {
1299                 ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1300                                      buf,len);
1301                 if (ret <= 0) return(ret);
1302                 }
1303
1304         return(ret);
1305         }
1306
1307 static int ssl3_read_internal(SSL *s, void *buf, int len, int peek)
1308         {
1309         int ret;
1310
1311         clear_sys_error();
1312         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1313         s->s3->in_read_app_data=1;
1314         ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
1315         if ((ret == -1) && (s->s3->in_read_app_data == 0))
1316                 {
1317                 /* ssl3_read_bytes decided to call s->handshake_func, which
1318                  * called ssl3_read_bytes to read handshake data.
1319                  * However, ssl3_read_bytes actually found application data
1320                  * and thinks that application data makes sense here (signalled
1321                  * by resetting 'in_read_app_data', strangely); so disable
1322                  * handshake processing and try to read application data again. */
1323                 s->in_handshake++;
1324                 ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
1325                 s->in_handshake--;
1326                 }
1327         else
1328                 s->s3->in_read_app_data=0;
1329
1330         return(ret);
1331         }
1332
1333 int ssl3_read(SSL *s, void *buf, int len)
1334         {
1335         return ssl3_read_internal(s, buf, len, 0);
1336         }
1337
1338 int ssl3_peek(SSL *s, void *buf, int len)
1339         {
1340         return ssl3_read_internal(s, buf, len, 1);
1341         }
1342
1343 int ssl3_renegotiate(SSL *s)
1344         {
1345         if (s->handshake_func == NULL)
1346                 return(1);
1347
1348         if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
1349                 return(0);
1350
1351         s->s3->renegotiate=1;
1352         return(1);
1353         }
1354
1355 int ssl3_renegotiate_check(SSL *s)
1356         {
1357         int ret=0;
1358
1359         if (s->s3->renegotiate)
1360                 {
1361                 if (    (s->s3->rbuf.left == 0) &&
1362                         (s->s3->wbuf.left == 0) &&
1363                         !SSL_in_init(s))
1364                         {
1365 /*
1366 if we are the server, and we have sent a 'RENEGOTIATE' message, we
1367 need to go to SSL_ST_ACCEPT.
1368 */
1369                         /* SSL_ST_ACCEPT */
1370                         s->state=SSL_ST_RENEGOTIATE;
1371                         s->s3->renegotiate=0;
1372                         s->s3->num_renegotiations++;
1373                         s->s3->total_renegotiations++;
1374                         ret=1;
1375                         }
1376                 }
1377         return(ret);
1378         }
1379