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" OPENSSL_VERSION_PTEXT;
  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 #if TLS1_ALLOW_EXPERIMENTAL_CIPHERSUITES
 359         /* New TLS Export CipherSuites */
 360         /* Cipher 60 */
 361             {
 362             1,
 363             TLS1_TXT_RSA_EXPORT56_WITH_RC4_56_MD5,
 364             TLS1_CK_RSA_EXPORT56_WITH_RC4_56_MD5,
 365             SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_EXP56|SSL_TLSV1,
 366             0,
 367             SSL_ALL_CIPHERS
 368             },
 369         /* Cipher 61 */
 370             {
 371             1,
 372             TLS1_TXT_RSA_EXPORT56_WITH_RC2_CBC_56_MD5,
 373             TLS1_CK_RSA_EXPORT56_WITH_RC2_CBC_56_MD5,
 374             SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_EXP56|SSL_TLSV1,
 375             0,
 376             SSL_ALL_CIPHERS
 377             },
 378         /* Cipher 62 */
 379             {
 380             1,
 381             TLS1_TXT_RSA_EXPORT56_WITH_DES_CBC_SHA,
 382             TLS1_CK_RSA_EXPORT56_WITH_DES_CBC_SHA,
 383             SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA|SSL_EXP56|SSL_TLSV1,
 384             0,
 385             SSL_ALL_CIPHERS
 386             },
 387 #endif
 388
 389 /* end of list */
 390         };
 391
 392 static SSL3_ENC_METHOD SSLv3_enc_data={
 393         ssl3_enc,
 394         ssl3_mac,
 395         ssl3_setup_key_block,
 396         ssl3_generate_master_secret,
 397         ssl3_change_cipher_state,
 398         ssl3_final_finish_mac,
 399         MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
 400         ssl3_cert_verify_mac,
 401         SSL3_MD_CLIENT_FINISHED_CONST,4,
 402         SSL3_MD_SERVER_FINISHED_CONST,4,
 403         ssl3_alert_code,
 404         };
 405
 406 static SSL_METHOD SSLv3_data= {
 407         SSL3_VERSION,
 408         ssl3_new,
 409         ssl3_clear,
 410         ssl3_free,
 411         ssl_undefined_function,
 412         ssl_undefined_function,
 413         ssl3_read,
 414         ssl3_peek,
 415         ssl3_write,
 416         ssl3_shutdown,
 417         ssl3_renegotiate,
 418         ssl3_renegotiate_check,
 419         ssl3_ctrl,
 420         ssl3_ctx_ctrl,
 421         ssl3_get_cipher_by_char,
 422         ssl3_put_cipher_by_char,
 423         ssl3_pending,
 424         ssl3_num_ciphers,
 425         ssl3_get_cipher,
 426         ssl_bad_method,
 427         ssl3_default_timeout,
 428         &SSLv3_enc_data,
 429         };
 430
 431 static long ssl3_default_timeout()
 432         {
 433         /* 2 hours, the 24 hours mentioned in the SSLv3 spec
 434          * is way too long for http, the cache would over fill */
 435         return(60*60*2);
 436         }
 437
 438 SSL_METHOD *sslv3_base_method()
 439         {
 440         return(&SSLv3_data);
 441         }
 442
 443 int ssl3_num_ciphers()
 444         {
 445         return(SSL3_NUM_CIPHERS);
 446         }
 447
 448 SSL_CIPHER *ssl3_get_cipher(u)
 449 unsigned int u;
 450         {
 451         if (u < SSL3_NUM_CIPHERS)
 452                 return(&(ssl3_ciphers[SSL3_NUM_CIPHERS-1-u]));
 453         else
 454                 return(NULL);
 455         }
 456
 457 /* The problem is that it may not be the correct record type */
 458 int ssl3_pending(s)
 459 SSL *s;
 460         {
 461         return(s->s3->rrec.length);
 462         }
 463
 464 int ssl3_new(s)
 465 SSL *s;
 466         {
 467         SSL3_CTX *s3;
 468
 469         if ((s3=(SSL3_CTX *)Malloc(sizeof(SSL3_CTX))) == NULL) goto err;
 470         memset(s3,0,sizeof(SSL3_CTX));
 471
 472         s->s3=s3;
 473         /*
 474         s->s3->tmp.ca_names=NULL;
 475         s->s3->tmp.key_block=NULL;
 476         s->s3->tmp.key_block_length=0;
 477         s->s3->rbuf.buf=NULL;
 478         s->s3->wbuf.buf=NULL;
 479         */
 480
 481         s->method->ssl_clear(s);
 482         return(1);
 483 err:
 484         return(0);
 485         }
 486
 487 void ssl3_free(s)
 488 SSL *s;
 489         {
 490         if(s == NULL)
 491             return;
 492
 493         ssl3_cleanup_key_block(s);
 494         if (s->s3->rbuf.buf != NULL)
 495                 Free(s->s3->rbuf.buf);
 496         if (s->s3->wbuf.buf != NULL)
 497                 Free(s->s3->wbuf.buf);
 498         if (s->s3->rrec.comp != NULL)
 499                 Free(s->s3->rrec.comp);
 500 #ifndef NO_DH
 501         if (s->s3->tmp.dh != NULL)
 502                 DH_free(s->s3->tmp.dh);
 503 #endif
 504         if (s->s3->tmp.ca_names != NULL)
 505                 sk_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
 506         memset(s->s3,0,sizeof(SSL3_CTX));
 507         Free(s->s3);
 508         s->s3=NULL;
 509         }
 510
 511 void ssl3_clear(s)
 512 SSL *s;
 513         {
 514         unsigned char *rp,*wp;
 515
 516         ssl3_cleanup_key_block(s);
 517         if (s->s3->tmp.ca_names != NULL)
 518                 sk_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
 519
 520         if (s->s3->rrec.comp != NULL)
 521                 {
 522                 Free(s->s3->rrec.comp);
 523                 s->s3->rrec.comp=NULL;
 524                 }
 525
 526         rp=s->s3->rbuf.buf;
 527         wp=s->s3->wbuf.buf;
 528
 529         memset(s->s3,0,sizeof(SSL3_CTX));
 530         if (rp != NULL) s->s3->rbuf.buf=rp;
 531         if (wp != NULL) s->s3->wbuf.buf=wp;
 532
 533         ssl_free_wbio_buffer(s);
 534
 535         s->packet_length=0;
 536         s->s3->renegotiate=0;
 537         s->s3->total_renegotiations=0;
 538         s->s3->num_renegotiations=0;
 539         s->s3->in_read_app_data=0;
 540         s->version=SSL3_VERSION;
 541         }
 542
 543 long ssl3_ctrl(s,cmd,larg,parg)
 544 SSL *s;
 545 int cmd;
 546 long larg;
 547 char *parg;
 548         {
 549         int ret=0;
 550
 551 #if !defined(NO_DSA) || !defined(NO_RSA)
 552         if (
 553 #ifndef NO_RSA
 554             cmd == SSL_CTRL_SET_TMP_RSA ||
 555             cmd == SSL_CTRL_SET_TMP_RSA_CB ||
 556 #endif
 557 #ifndef NO_DSA
 558             cmd == SSL_CTRL_SET_TMP_DH ||
 559             cmd == SSL_CTRL_SET_TMP_DH_CB ||
 560 #endif
 561                 0)
 562                 {
 563                 if (!ssl_cert_instantiate(&s->cert, s->ctx->default_cert))
 564                         {
 565                         SSLerr(SSL_F_SSL3_CTRL, ERR_R_MALLOC_FAILURE);
 566                         return(0);
 567                         }
 568                 }
 569 #endif
 570
 571         switch (cmd)
 572                 {
 573         case SSL_CTRL_GET_SESSION_REUSED:
 574                 ret=s->hit;
 575                 break;
 576         case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
 577                 break;
 578         case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
 579                 ret=s->s3->num_renegotiations;
 580                 break;
 581         case SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS:
 582                 ret=s->s3->num_renegotiations;
 583                 s->s3->num_renegotiations=0;
 584                 break;
 585         case SSL_CTRL_GET_TOTAL_RENEGOTIATIONS:
 586                 ret=s->s3->total_renegotiations;
 587                 break;
 588         case SSL_CTRL_GET_FLAGS:
 589                 ret=(int)(s->s3->flags);
 590                 break;
 591 #ifndef NO_RSA
 592         case SSL_CTRL_NEED_TMP_RSA:
 593                 if ((s->cert != NULL) && (s->cert->rsa_tmp == NULL) &&
 594                     ((s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
 595                      (EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8))))
 596                         ret = 1;
 597                 break;
 598         case SSL_CTRL_SET_TMP_RSA:
 599                 {
 600                         RSA *rsa = (RSA *)parg;
 601                         if (rsa == NULL) {
 602                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
 603                                 return(ret);
 604                         }
 605                         if ((rsa = RSAPrivateKey_dup(rsa)) == NULL) {
 606                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_RSA_LIB);
 607                                 return(ret);
 608                         }
 609                         if (s->cert->rsa_tmp != NULL)
 610                                 RSA_free(s->cert->rsa_tmp);
 611                         s->cert->rsa_tmp = rsa;
 612                         ret = 1;
 613                 }
 614                 break;
 615         case SSL_CTRL_SET_TMP_RSA_CB:
 616 #ifndef NOPROTO
 617                 s->cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))parg;
 618 #else
 619                 s->cert->rsa_tmp_cb = (RSA *(*)())parg;
 620 #endif
 621                 break;
 622 #endif
 623 #ifndef NO_DH
 624         case SSL_CTRL_SET_TMP_DH:
 625                 {
 626                         DH *dh = (DH *)parg;
 627                         if (dh == NULL) {
 628                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
 629                                 return(ret);
 630                         }
 631                         if ((dh = DHparams_dup(dh)) == NULL) {
 632                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
 633                                 return(ret);
 634                         }
 635                         if (!DH_generate_key(dh)) {
 636                                 DH_free(dh);
 637                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
 638                                 return(ret);
 639                         }
 640                         if (s->cert->dh_tmp != NULL)
 641                                 DH_free(s->cert->dh_tmp);
 642                         s->cert->dh_tmp = dh;
 643                         ret = 1;
 644                 }
 645                 break;
 646         case SSL_CTRL_SET_TMP_DH_CB:
 647 #ifndef NOPROTO
 648                 s->cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))parg;
 649 #else
 650                 s->cert->dh_tmp_cb = (DH *(*)())parg;
 651 #endif
 652                 break;
 653 #endif
 654         default:
 655                 break;
 656                 }
 657         return(ret);
 658         }
 659
 660 long ssl3_ctx_ctrl(ctx,cmd,larg,parg)
 661 SSL_CTX *ctx;
 662 int cmd;
 663 long larg;
 664 char *parg;
 665         {
 666         CERT *cert;
 667
 668         cert=ctx->default_cert;
 669
 670         switch (cmd)
 671                 {
 672 #ifndef NO_RSA
 673         case SSL_CTRL_NEED_TMP_RSA:
 674                 if (    (cert->rsa_tmp == NULL) &&
 675                         ((cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
 676                          (EVP_PKEY_size(cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8)))
 677                         )
 678                         return(1);
 679                 else
 680                         return(0);
 681                 /* break; */
 682         case SSL_CTRL_SET_TMP_RSA:
 683                 {
 684                 RSA *rsa;
 685                 int i;
 686
 687                 rsa=(RSA *)parg;
 688                 i=1;
 689                 if (rsa == NULL)
 690                         i=0;
 691                 else
 692                         {
 693                         if ((rsa=RSAPrivateKey_dup(rsa)) == NULL)
 694                                 i=0;
 695                         }
 696                 if (!i)
 697                         {
 698                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_RSA_LIB);
 699                         return(0);
 700                         }
 701                 else
 702                         {
 703                         if (cert->rsa_tmp != NULL)
 704                                 RSA_free(cert->rsa_tmp);
 705                         cert->rsa_tmp=rsa;
 706                         return(1);
 707                         }
 708                 }
 709                 /* break; */
 710         case SSL_CTRL_SET_TMP_RSA_CB:
 711 #ifndef NOPROTO
 712                 cert->rsa_tmp_cb=(RSA *(*)(SSL *, int, int))parg;
 713 #else
 714                 cert->rsa_tmp_cb=(RSA *(*)())parg;
 715 #endif
 716                 break;
 717 #endif
 718 #ifndef NO_DH
 719         case SSL_CTRL_SET_TMP_DH:
 720                 {
 721                 DH *new=NULL,*dh;
 722                 int rret=0;
 723
 724                 dh=(DH *)parg;
 725                 if (    ((new=DHparams_dup(dh)) == NULL) ||
 726                         (!DH_generate_key(new)))
 727                         {
 728                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
 729                         if (new != NULL) DH_free(new);
 730                         }
 731                 else
 732                         {
 733                         if (cert->dh_tmp != NULL)
 734                                 DH_free(cert->dh_tmp);
 735                         cert->dh_tmp=new;
 736                         rret=1;
 737                         }
 738                 return(rret);
 739                 }
 740                 /*break; */
 741         case SSL_CTRL_SET_TMP_DH_CB:
 742 #ifndef NOPROTO
 743                 cert->dh_tmp_cb=(DH *(*)(SSL *, int, int))parg;
 744 #else
 745                 cert->dh_tmp_cb=(DH *(*)())parg;
 746 #endif
 747                 break;
 748 #endif
 749         /* A Thawte special :-) */
 750         case SSL_CTRL_EXTRA_CHAIN_CERT:
 751                 if (ctx->extra_certs == NULL)
 752                         {
 753                         if ((ctx->extra_certs=sk_new_null()) == NULL)
 754                                 return(0);
 755                         }
 756                 sk_push(ctx->extra_certs,(char *)parg);
 757                 break;
 758
 759         default:
 760                 return(0);
 761                 }
 762         return(1);
 763         }
 764
 765 /* This function needs to check if the ciphers required are actually
 766  * available */
 767 SSL_CIPHER *ssl3_get_cipher_by_char(p)
 768 const unsigned char *p;
 769         {
 770         static int init=1;
 771         static SSL_CIPHER *sorted[SSL3_NUM_CIPHERS];
 772         SSL_CIPHER c,*cp= &c,**cpp;
 773         unsigned long id;
 774         int i;
 775
 776         if (init)
 777                 {
 778                 init=0;
 779
 780                 for (i=0; i<SSL3_NUM_CIPHERS; i++)
 781                         sorted[i]= &(ssl3_ciphers[i]);
 782
 783                 qsort(  (char *)sorted,
 784                         SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
 785                         FP_ICC ssl_cipher_ptr_id_cmp);
 786                 }
 787
 788         id=0x03000000L|((unsigned long)p[0]<<8L)|(unsigned long)p[1];
 789         c.id=id;
 790         cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp,
 791                 (char *)sorted,
 792                 SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
 793                 (int (*)())ssl_cipher_ptr_id_cmp);
 794         if ((cpp == NULL) || !(*cpp)->valid)
 795                 return(NULL);
 796         else
 797                 return(*cpp);
 798         }
 799
 800 int ssl3_put_cipher_by_char(c,p)
 801 const SSL_CIPHER *c;
 802 unsigned char *p;
 803         {
 804         long l;
 805
 806         if (p != NULL)
 807                 {
 808                 l=c->id;
 809                 if ((l & 0xff000000) != 0x03000000) return(0);
 810                 p[0]=((unsigned char)(l>> 8L))&0xFF;
 811                 p[1]=((unsigned char)(l     ))&0xFF;
 812                 }
 813         return(2);
 814         }
 815
 816 int ssl3_part_read(s,i)
 817 SSL *s;
 818 int i;
 819         {
 820         s->rwstate=SSL_READING;
 821
 822         if (i < 0)
 823                 {
 824                 return(i);
 825                 }
 826         else
 827                 {
 828                 s->init_num+=i;
 829                 return(0);
 830                 }
 831         }
 832
 833 SSL_CIPHER *ssl3_choose_cipher(s,have,pref)
 834 SSL *s;
 835 STACK *have,*pref;
 836         {
 837         SSL_CIPHER *c,*ret=NULL;
 838         int i,j,ok;
 839         CERT *cert;
 840         unsigned long alg,mask,emask;
 841
 842         /* Lets see which ciphers we can supported */
 843         if (s->cert != NULL)
 844                 cert=s->cert;
 845         else
 846                 cert=s->ctx->default_cert;
 847
 848         sk_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
 849
 850 #ifdef CIPHER_DEBUG
 851         printf("Have:\n");
 852         for(i=0 ; i < sk_num(pref) ; ++i)
 853             {
 854             c=(SSL_CIPHER *)sk_value(pref,i);
 855             printf("%p:%s\n",c,c->name);
 856             }
 857 #endif
 858
 859         for (i=0; i<sk_num(have); i++)
 860                 {
 861                 c=(SSL_CIPHER *)sk_value(have,i);
 862
 863                 ssl_set_cert_masks(cert,s->ctx->default_cert,c);
 864                 mask=cert->mask;
 865                 emask=cert->export_mask;
 866
 867                 alg=c->algorithms&(SSL_MKEY_MASK|SSL_AUTH_MASK);
 868                 if (SSL_IS_EXPORT(c->algorithms))
 869                         {
 870                         ok=((alg & emask) == alg)?1:0;
 871 #ifdef CIPHER_DEBUG
 872                         printf("%d:[%08lX:%08lX]%p:%s (export)\n",ok,alg,emask,
 873                                c,c->name);
 874 #endif
 875                         }
 876                 else
 877                         {
 878                         ok=((alg & mask) == alg)?1:0;
 879 #ifdef CIPHER_DEBUG
 880                         printf("%d:[%08lX:%08lX]%p:%s\n",ok,alg,mask,c,
 881                                c->name);
 882 #endif
 883                         }
 884
 885                 if (!ok) continue;
 886
 887                 j=sk_find(pref,(char *)c);
 888                 if (j >= 0)
 889                         {
 890                         ret=(SSL_CIPHER *)sk_value(pref,j);
 891                         break;
 892                         }
 893                 }
 894         return(ret);
 895         }
 896
 897 int ssl3_get_req_cert_type(s,p)
 898 SSL *s;
 899 unsigned char *p;
 900         {
 901         int ret=0;
 902         unsigned long alg;
 903
 904         alg=s->s3->tmp.new_cipher->algorithms;
 905
 906 #ifndef NO_DH
 907         if (alg & (SSL_kDHr|SSL_kEDH))
 908                 {
 909 #  ifndef NO_RSA
 910                 p[ret++]=SSL3_CT_RSA_FIXED_DH;
 911 #  endif
 912 #  ifndef NO_DSA
 913                 p[ret++]=SSL3_CT_DSS_FIXED_DH;
 914 #  endif
 915                 }
 916         if ((s->version == SSL3_VERSION) &&
 917                 (alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr)))
 918                 {
 919 #  ifndef NO_RSA
 920                 p[ret++]=SSL3_CT_RSA_EPHEMERAL_DH;
 921 #  endif
 922 #  ifndef NO_DSA
 923                 p[ret++]=SSL3_CT_DSS_EPHEMERAL_DH;
 924 #  endif
 925                 }
 926 #endif /* !NO_DH */
 927 #ifndef NO_RSA
 928         p[ret++]=SSL3_CT_RSA_SIGN;
 929 #endif
 930 #ifndef NO_DSA
 931         p[ret++]=SSL3_CT_DSS_SIGN;
 932 #endif
 933         return(ret);
 934         }
 935
 936 int ssl3_shutdown(s)
 937 SSL *s;
 938         {
 939
 940         /* Don't do anything much if we have not done the handshake or
 941          * we don't want to send messages :-) */
 942         if ((s->quiet_shutdown) || (s->state == SSL_ST_BEFORE))
 943                 {
 944                 s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 945                 return(1);
 946                 }
 947
 948         if (!(s->shutdown & SSL_SENT_SHUTDOWN))
 949                 {
 950                 s->shutdown|=SSL_SENT_SHUTDOWN;
 951 #if 1
 952                 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_CLOSE_NOTIFY);
 953 #endif
 954                 /* our shutdown alert has been sent now, and if it still needs
 955                  * to be written, s->s3->alert_dispatch will be true */
 956                 }
 957         else if (s->s3->alert_dispatch)
 958                 {
 959                 /* resend it if not sent */
 960 #if 1
 961                 ssl3_dispatch_alert(s);
 962 #endif
 963                 }
 964         else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
 965                 {
 966                 /* If we are waiting for a close from our peer, we are closed */
 967                 ssl3_read_bytes(s,0,NULL,0);
 968                 }
 969
 970         if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
 971                 !s->s3->alert_dispatch)
 972                 return(1);
 973         else
 974                 return(0);
 975         }
 976
 977 int ssl3_write(s,buf,len)
 978 SSL *s;
 979 const char *buf;
 980 int len;
 981         {
 982         int ret,n;
 983
 984 #if 0
 985         if (s->shutdown & SSL_SEND_SHUTDOWN)
 986                 {
 987                 s->rwstate=SSL_NOTHING;
 988                 return(0);
 989                 }
 990 #endif
 991         clear_sys_error();
 992         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
 993
 994         /* This is an experimental flag that sends the
 995          * last handshake message in the same packet as the first
 996          * use data - used to see if it helps the TCP protocol during
 997          * session-id reuse */
 998         /* The second test is because the buffer may have been removed */
 999         if ((s->s3->flags & SSL3_FLAGS_POP_BUFFER) && (s->wbio == s->bbio))
1000                 {
1001                 /* First time through, we write into the buffer */
1002                 if (s->s3->delay_buf_pop_ret == 0)
1003                         {
1004                         ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1005                                 (char *)buf,len);
1006                         if (ret <= 0) return(ret);
1007
1008                         s->s3->delay_buf_pop_ret=ret;
1009                         }
1010
1011                 s->rwstate=SSL_WRITING;
1012                 n=BIO_flush(s->wbio);
1013                 if (n <= 0) return(n);
1014                 s->rwstate=SSL_NOTHING;
1015
1016                 /* We have flushed the buffer, so remove it */
1017                 ssl_free_wbio_buffer(s);
1018                 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
1019
1020                 ret=s->s3->delay_buf_pop_ret;
1021                 s->s3->delay_buf_pop_ret=0;
1022                 }
1023         else
1024                 {
1025                 ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1026                         (char *)buf,len);
1027                 if (ret <= 0) return(ret);
1028                 }
1029
1030         return(ret);
1031         }
1032
1033 int ssl3_read(s,buf,len)
1034 SSL *s;
1035 char *buf;
1036 int len;
1037         {
1038         int ret;
1039
1040         clear_sys_error();
1041         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1042         s->s3->in_read_app_data=1;
1043         ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
1044         if ((ret == -1) && (s->s3->in_read_app_data == 0))
1045                 {
1046                 ERR_get_error(); /* clear the error */
1047                 s->s3->in_read_app_data=0;
1048                 s->in_handshake++;
1049                 ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
1050                 s->in_handshake--;
1051                 }
1052         else
1053                 s->s3->in_read_app_data=0;
1054
1055         return(ret);
1056         }
1057
1058 int ssl3_peek(s,buf,len)
1059 SSL *s;
1060 char *buf;
1061 int len;
1062         {
1063         SSL3_RECORD *rr;
1064         int n;
1065
1066         rr= &(s->s3->rrec);
1067         if ((rr->length == 0) || (rr->type != SSL3_RT_APPLICATION_DATA))
1068                 {
1069                 n=ssl3_read(s,buf,1);
1070                 if (n <= 0) return(n);
1071                 rr->length++;
1072                 rr->off--;
1073                 }
1074
1075         if ((unsigned int)len > rr->length)
1076                 n=rr->length;
1077         else
1078                 n=len;
1079         memcpy(buf,&(rr->data[rr->off]),(unsigned int)n);
1080         return(n);
1081         }
1082
1083 int ssl3_renegotiate(s)
1084 SSL *s;
1085         {
1086         if (s->handshake_func == NULL)
1087                 return(1);
1088
1089         if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
1090                 return(0);
1091
1092         s->s3->renegotiate=1;
1093         return(1);
1094         }
1095
1096 int ssl3_renegotiate_check(s)
1097 SSL *s;
1098         {
1099         int ret=0;
1100
1101         if (s->s3->renegotiate)
1102                 {
1103                 if (    (s->s3->rbuf.left == 0) &&
1104                         (s->s3->wbuf.left == 0) &&
1105                         !SSL_in_init(s))
1106                         {
1107 /*
1108 if we are the server, and we have sent a 'RENEGOTIATE' message, we
1109 need to go to SSL_ST_ACCEPT.\1e
1110 */
1111                         /* SSL_ST_ACCEPT */
1112                         s->state=SSL_ST_RENEGOTIATE;
1113                         s->s3->renegotiate=0;
1114                         s->s3->num_renegotiations++;
1115                         s->s3->total_renegotiations++;
1116                         ret=1;
1117                         }
1118                 }
1119         return(ret);
1120         }
1121