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 #include <stdio.h>
  60 #include "objects.h"
  61 #include "ssl_locl.h"
  62
  63 char *ssl3_version_str="SSLv3 part of OpenSSL 0.9.2 31-Dec-1998";
  64
  65 #define SSL3_NUM_CIPHERS        (sizeof(ssl3_ciphers)/sizeof(SSL_CIPHER))
  66
  67 #ifndef NOPROTO
  68 static long ssl3_default_timeout(void );
  69 #else
  70 static long ssl3_default_timeout();
  71 #endif
  72
  73 SSL_CIPHER ssl3_ciphers[]={
  74 /* The RSA ciphers */
  75 /* Cipher 01 */
  76         {
  77         1,
  78         SSL3_TXT_RSA_NULL_MD5,
  79         SSL3_CK_RSA_NULL_MD5,
  80         SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3,
  81         0,
  82         SSL_ALL_CIPHERS,
  83         },
  84 /* Cipher 02 */
  85         {
  86         1,
  87         SSL3_TXT_RSA_NULL_SHA,
  88         SSL3_CK_RSA_NULL_SHA,
  89         SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
  90         0,
  91         SSL_ALL_CIPHERS,
  92         },
  93
  94 /* anon DH */
  95 /* Cipher 17 */
  96         {
  97         1,
  98         SSL3_TXT_ADH_RC4_40_MD5,
  99         SSL3_CK_ADH_RC4_40_MD5,
 100         SSL_kEDH |SSL_aNULL|SSL_RC4  |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
 101         0,
 102         SSL_ALL_CIPHERS,
 103         },
 104 /* Cipher 18 */
 105         {
 106         1,
 107         SSL3_TXT_ADH_RC4_128_MD5,
 108         SSL3_CK_ADH_RC4_128_MD5,
 109         SSL_kEDH |SSL_aNULL|SSL_RC4  |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3,
 110         0,
 111         SSL_ALL_CIPHERS,
 112         },
 113 /* Cipher 19 */
 114         {
 115         1,
 116         SSL3_TXT_ADH_DES_40_CBC_SHA,
 117         SSL3_CK_ADH_DES_40_CBC_SHA,
 118         SSL_kEDH |SSL_aNULL|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
 119         0,
 120         SSL_ALL_CIPHERS,
 121         },
 122 /* Cipher 1A */
 123         {
 124         1,
 125         SSL3_TXT_ADH_DES_64_CBC_SHA,
 126         SSL3_CK_ADH_DES_64_CBC_SHA,
 127         SSL_kEDH |SSL_aNULL|SSL_DES  |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
 128         0,
 129         SSL_ALL_CIPHERS,
 130         },
 131 /* Cipher 1B */
 132         {
 133         1,
 134         SSL3_TXT_ADH_DES_192_CBC_SHA,
 135         SSL3_CK_ADH_DES_192_CBC_SHA,
 136         SSL_kEDH |SSL_aNULL|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
 137         0,
 138         SSL_ALL_CIPHERS,
 139         },
 140
 141 /* RSA again */
 142 /* Cipher 03 */
 143         {
 144         1,
 145         SSL3_TXT_RSA_RC4_40_MD5,
 146         SSL3_CK_RSA_RC4_40_MD5,
 147         SSL_kRSA|SSL_aRSA|SSL_RC4  |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
 148         0,
 149         SSL_ALL_CIPHERS,
 150         },
 151 /* Cipher 04 */
 152         {
 153         1,
 154         SSL3_TXT_RSA_RC4_128_MD5,
 155         SSL3_CK_RSA_RC4_128_MD5,
 156         SSL_kRSA|SSL_aRSA|SSL_RC4  |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
 157         0,
 158         SSL_ALL_CIPHERS,
 159         },
 160 /* Cipher 05 */
 161         {
 162         1,
 163         SSL3_TXT_RSA_RC4_128_SHA,
 164         SSL3_CK_RSA_RC4_128_SHA,
 165         SSL_kRSA|SSL_aRSA|SSL_RC4  |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
 166         0,
 167         SSL_ALL_CIPHERS,
 168         },
 169 /* Cipher 06 */
 170         {
 171         1,
 172         SSL3_TXT_RSA_RC2_40_MD5,
 173         SSL3_CK_RSA_RC2_40_MD5,
 174         SSL_kRSA|SSL_aRSA|SSL_RC2  |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
 175         0,
 176         SSL_ALL_CIPHERS,
 177         },
 178 /* Cipher 07 */
 179         {
 180         1,
 181         SSL3_TXT_RSA_IDEA_128_SHA,
 182         SSL3_CK_RSA_IDEA_128_SHA,
 183         SSL_kRSA|SSL_aRSA|SSL_IDEA |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
 184         0,
 185         SSL_ALL_CIPHERS,
 186         },
 187 /* Cipher 08 */
 188         {
 189         1,
 190         SSL3_TXT_RSA_DES_40_CBC_SHA,
 191         SSL3_CK_RSA_DES_40_CBC_SHA,
 192         SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
 193         0,
 194         SSL_ALL_CIPHERS,
 195         },
 196 /* Cipher 09 */
 197         {
 198         1,
 199         SSL3_TXT_RSA_DES_64_CBC_SHA,
 200         SSL3_CK_RSA_DES_64_CBC_SHA,
 201         SSL_kRSA|SSL_aRSA|SSL_DES  |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
 202         0,
 203         SSL_ALL_CIPHERS,
 204         },
 205 /* Cipher 0A */
 206         {
 207         1,
 208         SSL3_TXT_RSA_DES_192_CBC3_SHA,
 209         SSL3_CK_RSA_DES_192_CBC3_SHA,
 210         SSL_kRSA|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
 211         0,
 212         SSL_ALL_CIPHERS,
 213         },
 214
 215 /*  The DH ciphers */
 216 /* Cipher 0B */
 217         {
 218         0,
 219         SSL3_TXT_DH_DSS_DES_40_CBC_SHA,
 220         SSL3_CK_DH_DSS_DES_40_CBC_SHA,
 221         SSL_kDHd |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
 222         0,
 223         SSL_ALL_CIPHERS,
 224         },
 225 /* Cipher 0C */
 226         {
 227         0,
 228         SSL3_TXT_DH_DSS_DES_64_CBC_SHA,
 229         SSL3_CK_DH_DSS_DES_64_CBC_SHA,
 230         SSL_kDHd |SSL_aDH|SSL_DES  |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
 231         0,
 232         SSL_ALL_CIPHERS,
 233         },
 234 /* Cipher 0D */
 235         {
 236         0,
 237         SSL3_TXT_DH_DSS_DES_192_CBC3_SHA,
 238         SSL3_CK_DH_DSS_DES_192_CBC3_SHA,
 239         SSL_kDHd |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
 240         0,
 241         SSL_ALL_CIPHERS,
 242         },
 243 /* Cipher 0E */
 244         {
 245         0,
 246         SSL3_TXT_DH_RSA_DES_40_CBC_SHA,
 247         SSL3_CK_DH_RSA_DES_40_CBC_SHA,
 248         SSL_kDHr |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
 249         0,
 250         SSL_ALL_CIPHERS,
 251         },
 252 /* Cipher 0F */
 253         {
 254         0,
 255         SSL3_TXT_DH_RSA_DES_64_CBC_SHA,
 256         SSL3_CK_DH_RSA_DES_64_CBC_SHA,
 257         SSL_kDHr |SSL_aDH|SSL_DES  |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
 258         0,
 259         SSL_ALL_CIPHERS,
 260         },
 261 /* Cipher 10 */
 262         {
 263         0,
 264         SSL3_TXT_DH_RSA_DES_192_CBC3_SHA,
 265         SSL3_CK_DH_RSA_DES_192_CBC3_SHA,
 266         SSL_kDHr |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
 267         0,
 268         SSL_ALL_CIPHERS,
 269         },
 270
 271 /* The Ephemeral DH ciphers */
 272 /* Cipher 11 */
 273         {
 274         1,
 275         SSL3_TXT_EDH_DSS_DES_40_CBC_SHA,
 276         SSL3_CK_EDH_DSS_DES_40_CBC_SHA,
 277         SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
 278         0,
 279         SSL_ALL_CIPHERS,
 280         },
 281 /* Cipher 12 */
 282         {
 283         1,
 284         SSL3_TXT_EDH_DSS_DES_64_CBC_SHA,
 285         SSL3_CK_EDH_DSS_DES_64_CBC_SHA,
 286         SSL_kEDH|SSL_aDSS|SSL_DES  |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
 287         0,
 288         SSL_ALL_CIPHERS,
 289         },
 290 /* Cipher 13 */
 291         {
 292         1,
 293         SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA,
 294         SSL3_CK_EDH_DSS_DES_192_CBC3_SHA,
 295         SSL_kEDH|SSL_aDSS|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
 296         0,
 297         SSL_ALL_CIPHERS,
 298         },
 299 /* Cipher 14 */
 300         {
 301         1,
 302         SSL3_TXT_EDH_RSA_DES_40_CBC_SHA,
 303         SSL3_CK_EDH_RSA_DES_40_CBC_SHA,
 304         SSL_kEDH|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
 305         0,
 306         SSL_ALL_CIPHERS,
 307         },
 308 /* Cipher 15 */
 309         {
 310         1,
 311         SSL3_TXT_EDH_RSA_DES_64_CBC_SHA,
 312         SSL3_CK_EDH_RSA_DES_64_CBC_SHA,
 313         SSL_kEDH|SSL_aRSA|SSL_DES  |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
 314         0,
 315         SSL_ALL_CIPHERS,
 316         },
 317 /* Cipher 16 */
 318         {
 319         1,
 320         SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA,
 321         SSL3_CK_EDH_RSA_DES_192_CBC3_SHA,
 322         SSL_kEDH|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
 323         0,
 324         SSL_ALL_CIPHERS,
 325         },
 326
 327 /* Fortezza */
 328 /* Cipher 1C */
 329         {
 330         0,
 331         SSL3_TXT_FZA_DMS_NULL_SHA,
 332         SSL3_CK_FZA_DMS_NULL_SHA,
 333         SSL_kFZA|SSL_aFZA |SSL_eNULL |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
 334         0,
 335         SSL_ALL_CIPHERS,
 336         },
 337
 338 /* Cipher 1D */
 339         {
 340         0,
 341         SSL3_TXT_FZA_DMS_FZA_SHA,
 342         SSL3_CK_FZA_DMS_FZA_SHA,
 343         SSL_kFZA|SSL_aFZA |SSL_eFZA |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
 344         0,
 345         SSL_ALL_CIPHERS,
 346         },
 347
 348 /* Cipher 1E */
 349         {
 350         0,
 351         SSL3_TXT_FZA_DMS_RC4_SHA,
 352         SSL3_CK_FZA_DMS_RC4_SHA,
 353         SSL_kFZA|SSL_aFZA |SSL_RC4  |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
 354         0,
 355         SSL_ALL_CIPHERS,
 356         },
 357
 358         /* New TLS Export CipherSuites */
 359         /* Cipher 60 */
 360             {
 361             1,
 362             TLS1_TXT_RSA_EXPORT56_WITH_RC4_56_MD5,
 363             TLS1_CK_RSA_EXPORT56_WITH_RC4_56_MD5,
 364             SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_EXP56|SSL_TLSV1,
 365             0,
 366             SSL_ALL_CIPHERS
 367             },
 368         /* Cipher 61 */
 369             {
 370             1,
 371             TLS1_TXT_RSA_EXPORT56_WITH_RC2_CBC_56_MD5,
 372             TLS1_CK_RSA_EXPORT56_WITH_RC2_CBC_56_MD5,
 373             SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_EXP56|SSL_TLSV1,
 374             0,
 375             SSL_ALL_CIPHERS
 376             },
 377         /* Cipher 62 */
 378             {
 379             1,
 380             TLS1_TXT_RSA_EXPORT56_WITH_DES_CBC_SHA,
 381             TLS1_CK_RSA_EXPORT56_WITH_DES_CBC_SHA,
 382             SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA|SSL_EXP56|SSL_TLSV1,
 383             0,
 384             SSL_ALL_CIPHERS
 385             },
 386
 387 /* end of list */
 388         };
 389
 390 static SSL3_ENC_METHOD SSLv3_enc_data={
 391         ssl3_enc,
 392         ssl3_mac,
 393         ssl3_setup_key_block,
 394         ssl3_generate_master_secret,
 395         ssl3_change_cipher_state,
 396         ssl3_final_finish_mac,
 397         MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
 398         ssl3_cert_verify_mac,
 399         SSL3_MD_CLIENT_FINISHED_CONST,4,
 400         SSL3_MD_SERVER_FINISHED_CONST,4,
 401         ssl3_alert_code,
 402         };
 403
 404 static SSL_METHOD SSLv3_data= {
 405         SSL3_VERSION,
 406         ssl3_new,
 407         ssl3_clear,
 408         ssl3_free,
 409         ssl_undefined_function,
 410         ssl_undefined_function,
 411         ssl3_read,
 412         ssl3_peek,
 413         ssl3_write,
 414         ssl3_shutdown,
 415         ssl3_renegotiate,
 416         ssl3_renegotiate_check,
 417         ssl3_ctrl,
 418         ssl3_ctx_ctrl,
 419         ssl3_get_cipher_by_char,
 420         ssl3_put_cipher_by_char,
 421         ssl3_pending,
 422         ssl3_num_ciphers,
 423         ssl3_get_cipher,
 424         ssl_bad_method,
 425         ssl3_default_timeout,
 426         &SSLv3_enc_data,
 427         };
 428
 429 static long ssl3_default_timeout()
 430         {
 431         /* 2 hours, the 24 hours mentioned in the SSLv3 spec
 432          * is way too long for http, the cache would over fill */
 433         return(60*60*2);
 434         }
 435
 436 SSL_METHOD *sslv3_base_method()
 437         {
 438         return(&SSLv3_data);
 439         }
 440
 441 int ssl3_num_ciphers()
 442         {
 443         return(SSL3_NUM_CIPHERS);
 444         }
 445
 446 SSL_CIPHER *ssl3_get_cipher(u)
 447 unsigned int u;
 448         {
 449         if (u < SSL3_NUM_CIPHERS)
 450                 return(&(ssl3_ciphers[SSL3_NUM_CIPHERS-1-u]));
 451         else
 452                 return(NULL);
 453         }
 454
 455 /* The problem is that it may not be the correct record type */
 456 int ssl3_pending(s)
 457 SSL *s;
 458         {
 459         return(s->s3->rrec.length);
 460         }
 461
 462 int ssl3_new(s)
 463 SSL *s;
 464         {
 465         SSL3_CTX *s3;
 466
 467         if ((s3=(SSL3_CTX *)Malloc(sizeof(SSL3_CTX))) == NULL) goto err;
 468         memset(s3,0,sizeof(SSL3_CTX));
 469
 470         s->s3=s3;
 471         /*
 472         s->s3->tmp.ca_names=NULL;
 473         s->s3->tmp.key_block=NULL;
 474         s->s3->tmp.key_block_length=0;
 475         s->s3->rbuf.buf=NULL;
 476         s->s3->wbuf.buf=NULL;
 477         */
 478
 479         s->method->ssl_clear(s);
 480         return(1);
 481 err:
 482         return(0);
 483         }
 484
 485 void ssl3_free(s)
 486 SSL *s;
 487         {
 488         if(s == NULL)
 489             return;
 490
 491         ssl3_cleanup_key_block(s);
 492         if (s->s3->rbuf.buf != NULL)
 493                 Free(s->s3->rbuf.buf);
 494         if (s->s3->wbuf.buf != NULL)
 495                 Free(s->s3->wbuf.buf);
 496         if (s->s3->rrec.comp != NULL)
 497                 Free(s->s3->rrec.comp);
 498 #ifndef NO_DH
 499         if (s->s3->tmp.dh != NULL)
 500                 DH_free(s->s3->tmp.dh);
 501 #endif
 502         if (s->s3->tmp.ca_names != NULL)
 503                 sk_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
 504         memset(s->s3,0,sizeof(SSL3_CTX));
 505         Free(s->s3);
 506         s->s3=NULL;
 507         }
 508
 509 void ssl3_clear(s)
 510 SSL *s;
 511         {
 512         unsigned char *rp,*wp;
 513
 514         ssl3_cleanup_key_block(s);
 515         if (s->s3->tmp.ca_names != NULL)
 516                 sk_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
 517
 518         if (s->s3->rrec.comp != NULL)
 519                 {
 520                 Free(s->s3->rrec.comp);
 521                 s->s3->rrec.comp=NULL;
 522                 }
 523
 524         rp=s->s3->rbuf.buf;
 525         wp=s->s3->wbuf.buf;
 526
 527         memset(s->s3,0,sizeof(SSL3_CTX));
 528         if (rp != NULL) s->s3->rbuf.buf=rp;
 529         if (wp != NULL) s->s3->wbuf.buf=wp;
 530
 531         ssl_free_wbio_buffer(s);
 532
 533         s->packet_length=0;
 534         s->s3->renegotiate=0;
 535         s->s3->total_renegotiations=0;
 536         s->s3->num_renegotiations=0;
 537         s->s3->in_read_app_data=0;
 538         s->version=SSL3_VERSION;
 539         }
 540
 541 long ssl3_ctrl(s,cmd,larg,parg)
 542 SSL *s;
 543 int cmd;
 544 long larg;
 545 char *parg;
 546         {
 547         int ret=0;
 548
 549 #if !defined(NO_DSA) || !defined(NO_RSA)
 550         if (
 551 #ifndef NO_RSA
 552             cmd == SSL_CTRL_SET_TMP_RSA ||
 553             cmd == SSL_CTRL_SET_TMP_RSA_CB ||
 554 #endif
 555 #ifndef NO_DSA
 556             cmd == SSL_CTRL_SET_TMP_DH ||
 557             cmd == SSL_CTRL_SET_TMP_DH_CB ||
 558 #endif
 559                 0)
 560                 {
 561                 if (!ssl_cert_instantiate(&s->cert, s->ctx->default_cert))
 562                         {
 563                         SSLerr(SSL_F_SSL3_CTRL, ERR_R_MALLOC_FAILURE);
 564                         return(0);
 565                         }
 566                 }
 567 #endif
 568
 569         switch (cmd)
 570                 {
 571         case SSL_CTRL_GET_SESSION_REUSED:
 572                 ret=s->hit;
 573                 break;
 574         case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
 575                 break;
 576         case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
 577                 ret=s->s3->num_renegotiations;
 578                 break;
 579         case SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS:
 580                 ret=s->s3->num_renegotiations;
 581                 s->s3->num_renegotiations=0;
 582                 break;
 583         case SSL_CTRL_GET_TOTAL_RENEGOTIATIONS:
 584                 ret=s->s3->total_renegotiations;
 585                 break;
 586         case SSL_CTRL_GET_FLAGS:
 587                 ret=(int)(s->s3->flags);
 588                 break;
 589 #ifndef NO_RSA
 590         case SSL_CTRL_NEED_TMP_RSA:
 591                 if ((s->cert != NULL) && (s->cert->rsa_tmp == NULL) &&
 592                     ((s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
 593                      (EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8))))
 594                         ret = 1;
 595                 break;
 596         case SSL_CTRL_SET_TMP_RSA:
 597                 {
 598                         RSA *rsa = (RSA *)parg;
 599                         if (rsa == NULL) {
 600                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
 601                                 return(ret);
 602                         }
 603                         if ((rsa = RSAPrivateKey_dup(rsa)) == NULL) {
 604                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_RSA_LIB);
 605                                 return(ret);
 606                         }
 607                         if (s->cert->rsa_tmp != NULL)
 608                                 RSA_free(s->cert->rsa_tmp);
 609                         s->cert->rsa_tmp = rsa;
 610                         ret = 1;
 611                 }
 612                 break;
 613         case SSL_CTRL_SET_TMP_RSA_CB:
 614 #ifndef NOPROTO
 615                 s->cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))parg;
 616 #else
 617                 s->cert->rsa_tmp_cb = (RSA *(*)())parg;
 618 #endif
 619                 break;
 620 #endif
 621 #ifndef NO_DH
 622         case SSL_CTRL_SET_TMP_DH:
 623                 {
 624                         DH *dh = (DH *)parg;
 625                         if (dh == NULL) {
 626                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
 627                                 return(ret);
 628                         }
 629                         if ((dh = DHparams_dup(dh)) == NULL) {
 630                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
 631                                 return(ret);
 632                         }
 633                         if (!DH_generate_key(dh)) {
 634                                 DH_free(dh);
 635                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
 636                                 return(ret);
 637                         }
 638                         if (s->cert->dh_tmp != NULL)
 639                                 DH_free(s->cert->dh_tmp);
 640                         s->cert->dh_tmp = dh;
 641                         ret = 1;
 642                 }
 643                 break;
 644         case SSL_CTRL_SET_TMP_DH_CB:
 645 #ifndef NOPROTO
 646                 s->cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))parg;
 647 #else
 648                 s->cert->dh_tmp_cb = (DH *(*)())parg;
 649 #endif
 650                 break;
 651 #endif
 652         default:
 653                 break;
 654                 }
 655         return(ret);
 656         }
 657
 658 long ssl3_ctx_ctrl(ctx,cmd,larg,parg)
 659 SSL_CTX *ctx;
 660 int cmd;
 661 long larg;
 662 char *parg;
 663         {
 664         CERT *cert;
 665
 666         cert=ctx->default_cert;
 667
 668         switch (cmd)
 669                 {
 670 #ifndef NO_RSA
 671         case SSL_CTRL_NEED_TMP_RSA:
 672                 if (    (cert->rsa_tmp == NULL) &&
 673                         ((cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
 674                          (EVP_PKEY_size(cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8)))
 675                         )
 676                         return(1);
 677                 else
 678                         return(0);
 679                 /* break; */
 680         case SSL_CTRL_SET_TMP_RSA:
 681                 {
 682                 RSA *rsa;
 683                 int i;
 684
 685                 rsa=(RSA *)parg;
 686                 i=1;
 687                 if (rsa == NULL)
 688                         i=0;
 689                 else
 690                         {
 691                         if ((rsa=RSAPrivateKey_dup(rsa)) == NULL)
 692                                 i=0;
 693                         }
 694                 if (!i)
 695                         {
 696                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_RSA_LIB);
 697                         return(0);
 698                         }
 699                 else
 700                         {
 701                         if (cert->rsa_tmp != NULL)
 702                                 RSA_free(cert->rsa_tmp);
 703                         cert->rsa_tmp=rsa;
 704                         return(1);
 705                         }
 706                 }
 707                 /* break; */
 708         case SSL_CTRL_SET_TMP_RSA_CB:
 709 #ifndef NOPROTO
 710                 cert->rsa_tmp_cb=(RSA *(*)(SSL *, int, int))parg;
 711 #else
 712                 cert->rsa_tmp_cb=(RSA *(*)())parg;
 713 #endif
 714                 break;
 715 #endif
 716 #ifndef NO_DH
 717         case SSL_CTRL_SET_TMP_DH:
 718                 {
 719                 DH *new=NULL,*dh;
 720                 int rret=0;
 721
 722                 dh=(DH *)parg;
 723                 if (    ((new=DHparams_dup(dh)) == NULL) ||
 724                         (!DH_generate_key(new)))
 725                         {
 726                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
 727                         if (new != NULL) DH_free(new);
 728                         }
 729                 else
 730                         {
 731                         if (cert->dh_tmp != NULL)
 732                                 DH_free(cert->dh_tmp);
 733                         cert->dh_tmp=new;
 734                         rret=1;
 735                         }
 736                 return(rret);
 737                 }
 738                 /*break; */
 739         case SSL_CTRL_SET_TMP_DH_CB:
 740 #ifndef NOPROTO
 741                 cert->dh_tmp_cb=(DH *(*)(SSL *, int, int))parg;
 742 #else
 743                 cert->dh_tmp_cb=(DH *(*)())parg;
 744 #endif
 745                 break;
 746 #endif
 747         /* A Thawte special :-) */
 748         case SSL_CTRL_EXTRA_CHAIN_CERT:
 749                 if (ctx->extra_certs == NULL)
 750                         {
 751                         if ((ctx->extra_certs=sk_new_null()) == NULL)
 752                                 return(0);
 753                         }
 754                 sk_push(ctx->extra_certs,(char *)parg);
 755                 break;
 756
 757         default:
 758                 return(0);
 759                 }
 760         return(1);
 761         }
 762
 763 /* This function needs to check if the ciphers required are actually
 764  * available */
 765 SSL_CIPHER *ssl3_get_cipher_by_char(p)
 766 const unsigned char *p;
 767         {
 768         static int init=1;
 769         static SSL_CIPHER *sorted[SSL3_NUM_CIPHERS];
 770         SSL_CIPHER c,*cp= &c,**cpp;
 771         unsigned long id;
 772         int i;
 773
 774         if (init)
 775                 {
 776                 init=0;
 777
 778                 for (i=0; i<SSL3_NUM_CIPHERS; i++)
 779                         sorted[i]= &(ssl3_ciphers[i]);
 780
 781                 qsort(  (char *)sorted,
 782                         SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
 783                         FP_ICC ssl_cipher_ptr_id_cmp);
 784                 }
 785
 786         id=0x03000000L|((unsigned long)p[0]<<8L)|(unsigned long)p[1];
 787         c.id=id;
 788         cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp,
 789                 (char *)sorted,
 790                 SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
 791                 (int (*)())ssl_cipher_ptr_id_cmp);
 792         if ((cpp == NULL) || !(*cpp)->valid)
 793                 return(NULL);
 794         else
 795                 return(*cpp);
 796         }
 797
 798 int ssl3_put_cipher_by_char(c,p)
 799 const SSL_CIPHER *c;
 800 unsigned char *p;
 801         {
 802         long l;
 803
 804         if (p != NULL)
 805                 {
 806                 l=c->id;
 807                 if ((l & 0xff000000) != 0x03000000) return(0);
 808                 p[0]=((unsigned char)(l>> 8L))&0xFF;
 809                 p[1]=((unsigned char)(l     ))&0xFF;
 810                 }
 811         return(2);
 812         }
 813
 814 int ssl3_part_read(s,i)
 815 SSL *s;
 816 int i;
 817         {
 818         s->rwstate=SSL_READING;
 819
 820         if (i < 0)
 821                 {
 822                 return(i);
 823                 }
 824         else
 825                 {
 826                 s->init_num+=i;
 827                 return(0);
 828                 }
 829         }
 830
 831 SSL_CIPHER *ssl3_choose_cipher(s,have,pref)
 832 SSL *s;
 833 STACK *have,*pref;
 834         {
 835         SSL_CIPHER *c,*ret=NULL;
 836         int i,j,ok;
 837         CERT *cert;
 838         unsigned long alg,mask,emask;
 839
 840         /* Lets see which ciphers we can supported */
 841         if (s->cert != NULL)
 842                 cert=s->cert;
 843         else
 844                 cert=s->ctx->default_cert;
 845
 846         sk_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
 847
 848 #ifdef CIPHER_DEBUG
 849         printf("Have:\n");
 850         for(i=0 ; i < sk_num(pref) ; ++i)
 851             {
 852             c=(SSL_CIPHER *)sk_value(pref,i);
 853             printf("%p:%s\n",c,c->name);
 854             }
 855 #endif
 856
 857         for (i=0; i<sk_num(have); i++)
 858                 {
 859                 c=(SSL_CIPHER *)sk_value(have,i);
 860
 861                 ssl_set_cert_masks(cert,s->ctx->default_cert,c);
 862                 mask=cert->mask;
 863                 emask=cert->export_mask;
 864
 865                 alg=c->algorithms&(SSL_MKEY_MASK|SSL_AUTH_MASK);
 866                 if (SSL_IS_EXPORT(c->algorithms))
 867                         {
 868                         ok=((alg & emask) == alg)?1:0;
 869 #ifdef CIPHER_DEBUG
 870                         printf("%d:[%08lX:%08lX]%p:%s (export)\n",ok,alg,emask,
 871                                c,c->name);
 872 #endif
 873                         }
 874                 else
 875                         {
 876                         ok=((alg & mask) == alg)?1:0;
 877 #ifdef CIPHER_DEBUG
 878                         printf("%d:[%08lX:%08lX]%p:%s\n",ok,alg,mask,c,
 879                                c->name);
 880 #endif
 881                         }
 882
 883                 if (!ok) continue;
 884
 885                 j=sk_find(pref,(char *)c);
 886                 if (j >= 0)
 887                         {
 888                         ret=(SSL_CIPHER *)sk_value(pref,j);
 889                         break;
 890                         }
 891                 }
 892         return(ret);
 893         }
 894
 895 int ssl3_get_req_cert_type(s,p)
 896 SSL *s;
 897 unsigned char *p;
 898         {
 899         int ret=0;
 900         unsigned long alg;
 901
 902         alg=s->s3->tmp.new_cipher->algorithms;
 903
 904 #ifndef NO_DH
 905         if (alg & (SSL_kDHr|SSL_kEDH))
 906                 {
 907 #  ifndef NO_RSA
 908                 p[ret++]=SSL3_CT_RSA_FIXED_DH;
 909 #  endif
 910 #  ifndef NO_DSA
 911                 p[ret++]=SSL3_CT_DSS_FIXED_DH;
 912 #  endif
 913                 }
 914         if ((s->version == SSL3_VERSION) &&
 915                 (alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr)))
 916                 {
 917 #  ifndef NO_RSA
 918                 p[ret++]=SSL3_CT_RSA_EPHEMERAL_DH;
 919 #  endif
 920 #  ifndef NO_DSA
 921                 p[ret++]=SSL3_CT_DSS_EPHEMERAL_DH;
 922 #  endif
 923                 }
 924 #endif /* !NO_DH */
 925 #ifndef NO_RSA
 926         p[ret++]=SSL3_CT_RSA_SIGN;
 927 #endif
 928 #ifndef NO_DSA
 929         p[ret++]=SSL3_CT_DSS_SIGN;
 930 #endif
 931         return(ret);
 932         }
 933
 934 int ssl3_shutdown(s)
 935 SSL *s;
 936         {
 937
 938         /* Don't do anything much if we have not done the handshake or
 939          * we don't want to send messages :-) */
 940         if ((s->quiet_shutdown) || (s->state == SSL_ST_BEFORE))
 941                 {
 942                 s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 943                 return(1);
 944                 }
 945
 946         if (!(s->shutdown & SSL_SENT_SHUTDOWN))
 947                 {
 948                 s->shutdown|=SSL_SENT_SHUTDOWN;
 949 #if 1
 950                 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_CLOSE_NOTIFY);
 951 #endif
 952                 /* our shutdown alert has been sent now, and if it still needs
 953                  * to be written, s->s3->alert_dispatch will be true */
 954                 }
 955         else if (s->s3->alert_dispatch)
 956                 {
 957                 /* resend it if not sent */
 958 #if 1
 959                 ssl3_dispatch_alert(s);
 960 #endif
 961                 }
 962         else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
 963                 {
 964                 /* If we are waiting for a close from our peer, we are closed */
 965                 ssl3_read_bytes(s,0,NULL,0);
 966                 }
 967
 968         if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
 969                 !s->s3->alert_dispatch)
 970                 return(1);
 971         else
 972                 return(0);
 973         }
 974
 975 int ssl3_write(s,buf,len)
 976 SSL *s;
 977 const char *buf;
 978 int len;
 979         {
 980         int ret,n;
 981
 982 #if 0
 983         if (s->shutdown & SSL_SEND_SHUTDOWN)
 984                 {
 985                 s->rwstate=SSL_NOTHING;
 986                 return(0);
 987                 }
 988 #endif
 989         clear_sys_error();
 990         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
 991
 992         /* This is an experimental flag that sends the
 993          * last handshake message in the same packet as the first
 994          * use data - used to see if it helps the TCP protocol during
 995          * session-id reuse */
 996         /* The second test is because the buffer may have been removed */
 997         if ((s->s3->flags & SSL3_FLAGS_POP_BUFFER) && (s->wbio == s->bbio))
 998                 {
 999                 /* First time through, we write into the buffer */
1000                 if (s->s3->delay_buf_pop_ret == 0)
1001                         {
1002                         ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1003                                 (char *)buf,len);
1004                         if (ret <= 0) return(ret);
1005
1006                         s->s3->delay_buf_pop_ret=ret;
1007                         }
1008
1009                 s->rwstate=SSL_WRITING;
1010                 n=BIO_flush(s->wbio);
1011                 if (n <= 0) return(n);
1012                 s->rwstate=SSL_NOTHING;
1013
1014                 /* We have flushed the buffer, so remove it */
1015                 ssl_free_wbio_buffer(s);
1016                 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
1017
1018                 ret=s->s3->delay_buf_pop_ret;
1019                 s->s3->delay_buf_pop_ret=0;
1020                 }
1021         else
1022                 {
1023                 ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1024                         (char *)buf,len);
1025                 if (ret <= 0) return(ret);
1026                 }
1027
1028         return(ret);
1029         }
1030
1031 int ssl3_read(s,buf,len)
1032 SSL *s;
1033 char *buf;
1034 int len;
1035         {
1036         int ret;
1037
1038         clear_sys_error();
1039         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1040         s->s3->in_read_app_data=1;
1041         ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
1042         if ((ret == -1) && (s->s3->in_read_app_data == 0))
1043                 {
1044                 ERR_get_error(); /* clear the error */
1045                 s->s3->in_read_app_data=0;
1046                 s->in_handshake++;
1047                 ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
1048                 s->in_handshake--;
1049                 }
1050         else
1051                 s->s3->in_read_app_data=0;
1052
1053         return(ret);
1054         }
1055
1056 int ssl3_peek(s,buf,len)
1057 SSL *s;
1058 char *buf;
1059 int len;
1060         {
1061         SSL3_RECORD *rr;
1062         int n;
1063
1064         rr= &(s->s3->rrec);
1065         if ((rr->length == 0) || (rr->type != SSL3_RT_APPLICATION_DATA))
1066                 {
1067                 n=ssl3_read(s,buf,1);
1068                 if (n <= 0) return(n);
1069                 rr->length++;
1070                 rr->off--;
1071                 }
1072
1073         if ((unsigned int)len > rr->length)
1074                 n=rr->length;
1075         else
1076                 n=len;
1077         memcpy(buf,&(rr->data[rr->off]),(unsigned int)n);
1078         return(n);
1079         }
1080
1081 int ssl3_renegotiate(s)
1082 SSL *s;
1083         {
1084         if (s->handshake_func == NULL)
1085                 return(1);
1086
1087         if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
1088                 return(0);
1089
1090         s->s3->renegotiate=1;
1091         return(1);
1092         }
1093
1094 int ssl3_renegotiate_check(s)
1095 SSL *s;
1096         {
1097         int ret=0;
1098
1099         if (s->s3->renegotiate)
1100                 {
1101                 if (    (s->s3->rbuf.left == 0) &&
1102                         (s->s3->wbuf.left == 0) &&
1103                         !SSL_in_init(s))
1104                         {
1105 /*
1106 if we are the server, and we have sent a 'RENEGOTIATE' message, we
1107 need to go to SSL_ST_ACCEPT.\1e
1108 */
1109                         /* SSL_ST_ACCEPT */
1110                         s->state=SSL_ST_RENEGOTIATE;
1111                         s->s3->renegotiate=0;
1112                         s->s3->num_renegotiations++;
1113                         s->s3->total_renegotiations++;
1114                         ret=1;
1115                         }
1116                 }
1117         return(ret);
1118         }
1119