ssl/ssl_lib.c

   1 /*! \file ssl/ssl_lib.c
   2  *  \brief Version independent SSL functions.
   3  */
   4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   5  * All rights reserved.
   6  *
   7  * This package is an SSL implementation written
   8  * by Eric Young (eay@cryptsoft.com).
   9  * The implementation was written so as to conform with Netscapes SSL.
  10  *
  11  * This library is free for commercial and non-commercial use as long as
  12  * the following conditions are aheared to.  The following conditions
  13  * apply to all code found in this distribution, be it the RC4, RSA,
  14  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  15  * included with this distribution is covered by the same copyright terms
  16  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  17  *
  18  * Copyright remains Eric Young's, and as such any Copyright notices in
  19  * the code are not to be removed.
  20  * If this package is used in a product, Eric Young should be given attribution
  21  * as the author of the parts of the library used.
  22  * This can be in the form of a textual message at program startup or
  23  * in documentation (online or textual) provided with the package.
  24  *
  25  * Redistribution and use in source and binary forms, with or without
  26  * modification, are permitted provided that the following conditions
  27  * are met:
  28  * 1. Redistributions of source code must retain the copyright
  29  *    notice, this list of conditions and the following disclaimer.
  30  * 2. Redistributions in binary form must reproduce the above copyright
  31  *    notice, this list of conditions and the following disclaimer in the
  32  *    documentation and/or other materials provided with the distribution.
  33  * 3. All advertising materials mentioning features or use of this software
  34  *    must display the following acknowledgement:
  35  *    "This product includes cryptographic software written by
  36  *     Eric Young (eay@cryptsoft.com)"
  37  *    The word 'cryptographic' can be left out if the rouines from the library
  38  *    being used are not cryptographic related :-).
  39  * 4. If you include any Windows specific code (or a derivative thereof) from
  40  *    the apps directory (application code) you must include an acknowledgement:
  41  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  * The licence and distribution terms for any publically available version or
  56  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  57  * copied and put under another distribution licence
  58  * [including the GNU Public Licence.]
  59  */
  60 /* ====================================================================
  61  * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
  62  *
  63  * Redistribution and use in source and binary forms, with or without
  64  * modification, are permitted provided that the following conditions
  65  * are met:
  66  *
  67  * 1. Redistributions of source code must retain the above copyright
  68  *    notice, this list of conditions and the following disclaimer.
  69  *
  70  * 2. Redistributions in binary form must reproduce the above copyright
  71  *    notice, this list of conditions and the following disclaimer in
  72  *    the documentation and/or other materials provided with the
  73  *    distribution.
  74  *
  75  * 3. All advertising materials mentioning features or use of this
  76  *    software must display the following acknowledgment:
  77  *    "This product includes software developed by the OpenSSL Project
  78  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  79  *
  80  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  81  *    endorse or promote products derived from this software without
  82  *    prior written permission. For written permission, please contact
  83  *    openssl-core@openssl.org.
  84  *
  85  * 5. Products derived from this software may not be called "OpenSSL"
  86  *    nor may "OpenSSL" appear in their names without prior written
  87  *    permission of the OpenSSL Project.
  88  *
  89  * 6. Redistributions of any form whatsoever must retain the following
  90  *    acknowledgment:
  91  *    "This product includes software developed by the OpenSSL Project
  92  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  93  *
  94  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  95  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  96  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  97  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  98  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  99  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 100  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 101  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 102  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 103  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 104  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 105  * OF THE POSSIBILITY OF SUCH DAMAGE.
 106  * ====================================================================
 107  *
 108  * This product includes cryptographic software written by Eric Young
 109  * (eay@cryptsoft.com).  This product includes software written by Tim
 110  * Hudson (tjh@cryptsoft.com).
 111  *
 112  */
 113 /* ====================================================================
 114  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 115  * ECC cipher suite support in OpenSSL originally developed by
 116  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 117  */
 118
 119 #ifdef REF_CHECK
 120 #  include <assert.h>
 121 #endif
 122 #include <stdio.h>
 123 #include "ssl_locl.h"
 124 #include "kssl_lcl.h"
 125 #include <openssl/objects.h>
 126 #include <openssl/lhash.h>
 127 #include <openssl/x509v3.h>
 128
 129 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
 130
 131 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
 132         /* evil casts, but these functions are only called if there's a library bug */
 133         (int (*)(SSL *,int))ssl_undefined_function,
 134         (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
 135         ssl_undefined_function,
 136         (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
 137         (int (*)(SSL*, int))ssl_undefined_function,
 138         (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
 139         };
 140
 141 int SSL_clear(SSL *s)
 142         {
 143
 144         if (s->method == NULL)
 145                 {
 146                 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
 147                 return(0);
 148                 }
 149
 150         if (ssl_clear_bad_session(s))
 151                 {
 152                 SSL_SESSION_free(s->session);
 153                 s->session=NULL;
 154                 }
 155
 156         s->error=0;
 157         s->hit=0;
 158         s->shutdown=0;
 159
 160 #if 0 /* Disabled since version 1.10 of this file (early return not
 161        * needed because SSL_clear is not called when doing renegotiation) */
 162         /* This is set if we are doing dynamic renegotiation so keep
 163          * the old cipher.  It is sort of a SSL_clear_lite :-) */
 164         if (s->new_session) return(1);
 165 #else
 166         if (s->new_session)
 167                 {
 168                 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
 169                 return 0;
 170                 }
 171 #endif
 172
 173         s->type=0;
 174
 175         s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
 176
 177         s->version=s->method->version;
 178         s->client_version=s->version;
 179         s->rwstate=SSL_NOTHING;
 180         s->rstate=SSL_ST_READ_HEADER;
 181 #if 0
 182         s->read_ahead=s->ctx->read_ahead;
 183 #endif
 184
 185         if (s->init_buf != NULL)
 186                 {
 187                 BUF_MEM_free(s->init_buf);
 188                 s->init_buf=NULL;
 189                 }
 190
 191         ssl_clear_cipher_ctx(s);
 192
 193         s->first_packet=0;
 194
 195 #if 1
 196         /* Check to see if we were changed into a different method, if
 197          * so, revert back if we are not doing session-id reuse. */
 198         if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
 199                 {
 200                 s->method->ssl_free(s);
 201                 s->method=s->ctx->method;
 202                 if (!s->method->ssl_new(s))
 203                         return(0);
 204                 }
 205         else
 206 #endif
 207                 s->method->ssl_clear(s);
 208         return(1);
 209         }
 210
 211 /** Used to change an SSL_CTXs default SSL method type */
 212 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
 213         {
 214         STACK_OF(SSL_CIPHER) *sk;
 215
 216         ctx->method=meth;
 217
 218         sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
 219                 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
 220         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
 221                 {
 222                 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
 223                 return(0);
 224                 }
 225         return(1);
 226         }
 227
 228 SSL *SSL_new(SSL_CTX *ctx)
 229         {
 230         SSL *s;
 231
 232         if (ctx == NULL)
 233                 {
 234                 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
 235                 return(NULL);
 236                 }
 237         if (ctx->method == NULL)
 238                 {
 239                 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
 240                 return(NULL);
 241                 }
 242
 243         s=(SSL *)OPENSSL_malloc(sizeof(SSL));
 244         if (s == NULL) goto err;
 245         memset(s,0,sizeof(SSL));
 246
 247 #ifndef OPENSSL_NO_KRB5
 248         s->kssl_ctx = kssl_ctx_new();
 249 #endif  /* OPENSSL_NO_KRB5 */
 250
 251         s->options=ctx->options;
 252         s->mode=ctx->mode;
 253         s->max_cert_list=ctx->max_cert_list;
 254
 255         if (ctx->cert != NULL)
 256                 {
 257                 /* Earlier library versions used to copy the pointer to
 258                  * the CERT, not its contents; only when setting new
 259                  * parameters for the per-SSL copy, ssl_cert_new would be
 260                  * called (and the direct reference to the per-SSL_CTX
 261                  * settings would be lost, but those still were indirectly
 262                  * accessed for various purposes, and for that reason they
 263                  * used to be known as s->ctx->default_cert).
 264                  * Now we don't look at the SSL_CTX's CERT after having
 265                  * duplicated it once. */
 266
 267                 s->cert = ssl_cert_dup(ctx->cert);
 268                 if (s->cert == NULL)
 269                         goto err;
 270                 }
 271         else
 272                 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
 273
 274         s->read_ahead=ctx->read_ahead;
 275         s->msg_callback=ctx->msg_callback;
 276         s->msg_callback_arg=ctx->msg_callback_arg;
 277         s->verify_mode=ctx->verify_mode;
 278         s->verify_depth=ctx->verify_depth;
 279         s->sid_ctx_length=ctx->sid_ctx_length;
 280         memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
 281         s->verify_callback=ctx->default_verify_callback;
 282         s->generate_session_id=ctx->generate_session_id;
 283         s->purpose = ctx->purpose;
 284         s->trust = ctx->trust;
 285         s->quiet_shutdown=ctx->quiet_shutdown;
 286
 287         CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
 288         s->ctx=ctx;
 289
 290         s->verify_result=X509_V_OK;
 291
 292         s->method=ctx->method;
 293
 294         if (!s->method->ssl_new(s))
 295                 goto err;
 296
 297         s->references=1;
 298         s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
 299
 300         SSL_clear(s);
 301
 302         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 303
 304         return(s);
 305 err:
 306         if (s != NULL)
 307                 {
 308                 if (s->cert != NULL)
 309                         ssl_cert_free(s->cert);
 310                 if (s->ctx != NULL)
 311                         SSL_CTX_free(s->ctx); /* decrement reference count */
 312                 OPENSSL_free(s);
 313                 }
 314         SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
 315         return(NULL);
 316         }
 317
 318 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
 319                                    unsigned int sid_ctx_len)
 320     {
 321     if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
 322         {
 323         SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
 324         return 0;
 325         }
 326     ctx->sid_ctx_length=sid_ctx_len;
 327     memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
 328
 329     return 1;
 330     }
 331
 332 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
 333                                unsigned int sid_ctx_len)
 334     {
 335     if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
 336         {
 337         SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
 338         return 0;
 339         }
 340     ssl->sid_ctx_length=sid_ctx_len;
 341     memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
 342
 343     return 1;
 344     }
 345
 346 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
 347         {
 348         CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
 349         ctx->generate_session_id = cb;
 350         CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
 351         return 1;
 352         }
 353
 354 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
 355         {
 356         CRYPTO_w_lock(CRYPTO_LOCK_SSL);
 357         ssl->generate_session_id = cb;
 358         CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
 359         return 1;
 360         }
 361
 362 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
 363                                 unsigned int id_len)
 364         {
 365         /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
 366          * we can "construct" a session to give us the desired check - ie. to
 367          * find if there's a session in the hash table that would conflict with
 368          * any new session built out of this id/id_len and the ssl_version in
 369          * use by this SSL. */
 370         SSL_SESSION r, *p;
 371         r.ssl_version = ssl->version;
 372         r.session_id_length = id_len;
 373         memcpy(r.session_id, id, id_len);
 374         /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
 375          * callback is calling us to check the uniqueness of a shorter ID, it
 376          * must be compared as a padded-out ID because that is what it will be
 377          * converted to when the callback has finished choosing it. */
 378         if((r.ssl_version == SSL2_VERSION) &&
 379                         (id_len < SSL2_SSL_SESSION_ID_LENGTH))
 380                 {
 381                 memset(r.session_id + id_len, 0,
 382                         SSL2_SSL_SESSION_ID_LENGTH - id_len);
 383                 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
 384                 }
 385
 386         CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
 387         p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
 388         CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
 389         return (p != NULL);
 390         }
 391
 392 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
 393         {
 394         return X509_PURPOSE_set(&s->purpose, purpose);
 395         }
 396
 397 int SSL_set_purpose(SSL *s, int purpose)
 398         {
 399         return X509_PURPOSE_set(&s->purpose, purpose);
 400         }
 401
 402 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
 403         {
 404         return X509_TRUST_set(&s->trust, trust);
 405         }
 406
 407 int SSL_set_trust(SSL *s, int trust)
 408         {
 409         return X509_TRUST_set(&s->trust, trust);
 410         }
 411
 412 void SSL_free(SSL *s)
 413         {
 414         int i;
 415
 416         if(s == NULL)
 417             return;
 418
 419         i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
 420 #ifdef REF_PRINT
 421         REF_PRINT("SSL",s);
 422 #endif
 423         if (i > 0) return;
 424 #ifdef REF_CHECK
 425         if (i < 0)
 426                 {
 427                 fprintf(stderr,"SSL_free, bad reference count\n");
 428                 abort(); /* ok */
 429                 }
 430 #endif
 431
 432         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 433
 434         if (s->bbio != NULL)
 435                 {
 436                 /* If the buffering BIO is in place, pop it off */
 437                 if (s->bbio == s->wbio)
 438                         {
 439                         s->wbio=BIO_pop(s->wbio);
 440                         }
 441                 BIO_free(s->bbio);
 442                 s->bbio=NULL;
 443                 }
 444         if (s->rbio != NULL)
 445                 BIO_free_all(s->rbio);
 446         if ((s->wbio != NULL) && (s->wbio != s->rbio))
 447                 BIO_free_all(s->wbio);
 448
 449         if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
 450
 451         /* add extra stuff */
 452         if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
 453         if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
 454
 455         /* Make the next call work :-) */
 456         if (s->session != NULL)
 457                 {
 458                 ssl_clear_bad_session(s);
 459                 SSL_SESSION_free(s->session);
 460                 }
 461
 462         ssl_clear_cipher_ctx(s);
 463
 464         if (s->cert != NULL) ssl_cert_free(s->cert);
 465         /* Free up if allocated */
 466
 467         if (s->ctx) SSL_CTX_free(s->ctx);
 468
 469         if (s->client_CA != NULL)
 470                 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
 471
 472         if (s->method != NULL) s->method->ssl_free(s);
 473
 474         OPENSSL_free(s);
 475         }
 476
 477 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
 478         {
 479         /* If the output buffering BIO is still in place, remove it
 480          */
 481         if (s->bbio != NULL)
 482                 {
 483                 if (s->wbio == s->bbio)
 484                         {
 485                         s->wbio=s->wbio->next_bio;
 486                         s->bbio->next_bio=NULL;
 487                         }
 488                 }
 489         if ((s->rbio != NULL) && (s->rbio != rbio))
 490                 BIO_free_all(s->rbio);
 491         if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
 492                 BIO_free_all(s->wbio);
 493         s->rbio=rbio;
 494         s->wbio=wbio;
 495         }
 496
 497 BIO *SSL_get_rbio(SSL *s)
 498         { return(s->rbio); }
 499
 500 BIO *SSL_get_wbio(SSL *s)
 501         { return(s->wbio); }
 502
 503 int SSL_get_fd(SSL *s)
 504         {
 505         return(SSL_get_rfd(s));
 506         }
 507
 508 int SSL_get_rfd(SSL *s)
 509         {
 510         int ret= -1;
 511         BIO *b,*r;
 512
 513         b=SSL_get_rbio(s);
 514         r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
 515         if (r != NULL)
 516                 BIO_get_fd(r,&ret);
 517         return(ret);
 518         }
 519
 520 int SSL_get_wfd(SSL *s)
 521         {
 522         int ret= -1;
 523         BIO *b,*r;
 524
 525         b=SSL_get_wbio(s);
 526         r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
 527         if (r != NULL)
 528                 BIO_get_fd(r,&ret);
 529         return(ret);
 530         }
 531
 532 #ifndef OPENSSL_NO_SOCK
 533 int SSL_set_fd(SSL *s,int fd)
 534         {
 535         int ret=0;
 536         BIO *bio=NULL;
 537
 538         bio=BIO_new(BIO_s_socket());
 539
 540         if (bio == NULL)
 541                 {
 542                 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
 543                 goto err;
 544                 }
 545         BIO_set_fd(bio,fd,BIO_NOCLOSE);
 546         SSL_set_bio(s,bio,bio);
 547         ret=1;
 548 err:
 549         return(ret);
 550         }
 551
 552 int SSL_set_wfd(SSL *s,int fd)
 553         {
 554         int ret=0;
 555         BIO *bio=NULL;
 556
 557         if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
 558                 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
 559                 {
 560                 bio=BIO_new(BIO_s_socket());
 561
 562                 if (bio == NULL)
 563                         { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
 564                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 565                 SSL_set_bio(s,SSL_get_rbio(s),bio);
 566                 }
 567         else
 568                 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
 569         ret=1;
 570 err:
 571         return(ret);
 572         }
 573
 574 int SSL_set_rfd(SSL *s,int fd)
 575         {
 576         int ret=0;
 577         BIO *bio=NULL;
 578
 579         if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
 580                 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
 581                 {
 582                 bio=BIO_new(BIO_s_socket());
 583
 584                 if (bio == NULL)
 585                         {
 586                         SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
 587                         goto err;
 588                         }
 589                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 590                 SSL_set_bio(s,bio,SSL_get_wbio(s));
 591                 }
 592         else
 593                 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
 594         ret=1;
 595 err:
 596         return(ret);
 597         }
 598 #endif
 599
 600
 601 /* return length of latest Finished message we sent, copy to 'buf' */
 602 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
 603         {
 604         size_t ret = 0;
 605
 606         if (s->s3 != NULL)
 607                 {
 608                 ret = s->s3->tmp.finish_md_len;
 609                 if (count > ret)
 610                         count = ret;
 611                 memcpy(buf, s->s3->tmp.finish_md, count);
 612                 }
 613         return ret;
 614         }
 615
 616 /* return length of latest Finished message we expected, copy to 'buf' */
 617 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
 618         {
 619         size_t ret = 0;
 620
 621         if (s->s3 != NULL)
 622                 {
 623                 ret = s->s3->tmp.peer_finish_md_len;
 624                 if (count > ret)
 625                         count = ret;
 626                 memcpy(buf, s->s3->tmp.peer_finish_md, count);
 627                 }
 628         return ret;
 629         }
 630
 631
 632 int SSL_get_verify_mode(SSL *s)
 633         {
 634         return(s->verify_mode);
 635         }
 636
 637 int SSL_get_verify_depth(SSL *s)
 638         {
 639         return(s->verify_depth);
 640         }
 641
 642 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
 643         {
 644         return(s->verify_callback);
 645         }
 646
 647 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
 648         {
 649         return(ctx->verify_mode);
 650         }
 651
 652 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
 653         {
 654         return(ctx->verify_depth);
 655         }
 656
 657 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
 658         {
 659         return(ctx->default_verify_callback);
 660         }
 661
 662 void SSL_set_verify(SSL *s,int mode,
 663                     int (*callback)(int ok,X509_STORE_CTX *ctx))
 664         {
 665         s->verify_mode=mode;
 666         if (callback != NULL)
 667                 s->verify_callback=callback;
 668         }
 669
 670 void SSL_set_verify_depth(SSL *s,int depth)
 671         {
 672         s->verify_depth=depth;
 673         }
 674
 675 void SSL_set_read_ahead(SSL *s,int yes)
 676         {
 677         s->read_ahead=yes;
 678         }
 679
 680 int SSL_get_read_ahead(SSL *s)
 681         {
 682         return(s->read_ahead);
 683         }
 684
 685 int SSL_pending(SSL *s)
 686         {
 687         /* SSL_pending cannot work properly if read-ahead is enabled
 688          * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
 689          * and it is impossible to fix since SSL_pending cannot report
 690          * errors that may be observed while scanning the new data.
 691          * (Note that SSL_pending() is often used as a boolean value,
 692          * so we'd better not return -1.)
 693          */
 694         return(s->method->ssl_pending(s));
 695         }
 696
 697 X509 *SSL_get_peer_certificate(SSL *s)
 698         {
 699         X509 *r;
 700
 701         if ((s == NULL) || (s->session == NULL))
 702                 r=NULL;
 703         else
 704                 r=s->session->peer;
 705
 706         if (r == NULL) return(r);
 707
 708         CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
 709
 710         return(r);
 711         }
 712
 713 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
 714         {
 715         STACK_OF(X509) *r;
 716
 717         if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
 718                 r=NULL;
 719         else
 720                 r=s->session->sess_cert->cert_chain;
 721
 722         /* If we are a client, cert_chain includes the peer's own
 723          * certificate; if we are a server, it does not. */
 724
 725         return(r);
 726         }
 727
 728 /* Now in theory, since the calling process own 't' it should be safe to
 729  * modify.  We need to be able to read f without being hassled */
 730 void SSL_copy_session_id(SSL *t,SSL *f)
 731         {
 732         CERT *tmp;
 733
 734         /* Do we need to to SSL locking? */
 735         SSL_set_session(t,SSL_get_session(f));
 736
 737         /* what if we are setup as SSLv2 but want to talk SSLv3 or
 738          * vice-versa */
 739         if (t->method != f->method)
 740                 {
 741                 t->method->ssl_free(t); /* cleanup current */
 742                 t->method=f->method;    /* change method */
 743                 t->method->ssl_new(t);  /* setup new */
 744                 }
 745
 746         tmp=t->cert;
 747         if (f->cert != NULL)
 748                 {
 749                 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
 750                 t->cert=f->cert;
 751                 }
 752         else
 753                 t->cert=NULL;
 754         if (tmp != NULL) ssl_cert_free(tmp);
 755         SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
 756         }
 757
 758 /* Fix this so it checks all the valid key/cert options */
 759 int SSL_CTX_check_private_key(SSL_CTX *ctx)
 760         {
 761         if (    (ctx == NULL) ||
 762                 (ctx->cert == NULL) ||
 763                 (ctx->cert->key->x509 == NULL))
 764                 {
 765                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 766                 return(0);
 767                 }
 768         if      (ctx->cert->key->privatekey == NULL)
 769                 {
 770                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 771                 return(0);
 772                 }
 773         return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
 774         }
 775
 776 /* Fix this function so that it takes an optional type parameter */
 777 int SSL_check_private_key(SSL *ssl)
 778         {
 779         if (ssl == NULL)
 780                 {
 781                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
 782                 return(0);
 783                 }
 784         if (ssl->cert == NULL)
 785                 {
 786                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 787                 return 0;
 788                 }
 789         if (ssl->cert->key->x509 == NULL)
 790                 {
 791                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 792                 return(0);
 793                 }
 794         if (ssl->cert->key->privatekey == NULL)
 795                 {
 796                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 797                 return(0);
 798                 }
 799         return(X509_check_private_key(ssl->cert->key->x509,
 800                 ssl->cert->key->privatekey));
 801         }
 802
 803 int SSL_accept(SSL *s)
 804         {
 805         if (s->handshake_func == 0)
 806                 /* Not properly initialized yet */
 807                 SSL_set_accept_state(s);
 808
 809         return(s->method->ssl_accept(s));
 810         }
 811
 812 int SSL_connect(SSL *s)
 813         {
 814         if (s->handshake_func == 0)
 815                 /* Not properly initialized yet */
 816                 SSL_set_connect_state(s);
 817
 818         return(s->method->ssl_connect(s));
 819         }
 820
 821 long SSL_get_default_timeout(SSL *s)
 822         {
 823         return(s->method->get_timeout());
 824         }
 825
 826 int SSL_read(SSL *s,void *buf,int num)
 827         {
 828         if (s->handshake_func == 0)
 829                 {
 830                 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
 831                 return -1;
 832                 }
 833
 834         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 835                 {
 836                 s->rwstate=SSL_NOTHING;
 837                 return(0);
 838                 }
 839         return(s->method->ssl_read(s,buf,num));
 840         }
 841
 842 int SSL_peek(SSL *s,void *buf,int num)
 843         {
 844         if (s->handshake_func == 0)
 845                 {
 846                 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
 847                 return -1;
 848                 }
 849
 850         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 851                 {
 852                 return(0);
 853                 }
 854         return(s->method->ssl_peek(s,buf,num));
 855         }
 856
 857 int SSL_write(SSL *s,const void *buf,int num)
 858         {
 859         if (s->handshake_func == 0)
 860                 {
 861                 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
 862                 return -1;
 863                 }
 864
 865         if (s->shutdown & SSL_SENT_SHUTDOWN)
 866                 {
 867                 s->rwstate=SSL_NOTHING;
 868                 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
 869                 return(-1);
 870                 }
 871         return(s->method->ssl_write(s,buf,num));
 872         }
 873
 874 int SSL_shutdown(SSL *s)
 875         {
 876         /* Note that this function behaves differently from what one might
 877          * expect.  Return values are 0 for no success (yet),
 878          * 1 for success; but calling it once is usually not enough,
 879          * even if blocking I/O is used (see ssl3_shutdown).
 880          */
 881
 882         if (s->handshake_func == 0)
 883                 {
 884                 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
 885                 return -1;
 886                 }
 887
 888         if ((s != NULL) && !SSL_in_init(s))
 889                 return(s->method->ssl_shutdown(s));
 890         else
 891                 return(1);
 892         }
 893
 894 int SSL_renegotiate(SSL *s)
 895         {
 896         if (s->new_session == 0)
 897                 {
 898                 s->new_session=1;
 899                 }
 900         return(s->method->ssl_renegotiate(s));
 901         }
 902
 903 int SSL_renegotiate_pending(SSL *s)
 904         {
 905         /* becomes true when negotiation is requested;
 906          * false again once a handshake has finished */
 907         return (s->new_session != 0);
 908         }
 909
 910 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
 911         {
 912         long l;
 913
 914         switch (cmd)
 915                 {
 916         case SSL_CTRL_GET_READ_AHEAD:
 917                 return(s->read_ahead);
 918         case SSL_CTRL_SET_READ_AHEAD:
 919                 l=s->read_ahead;
 920                 s->read_ahead=larg;
 921                 return(l);
 922
 923         case SSL_CTRL_SET_MSG_CALLBACK_ARG:
 924                 s->msg_callback_arg = parg;
 925                 return 1;
 926
 927         case SSL_CTRL_OPTIONS:
 928                 return(s->options|=larg);
 929         case SSL_CTRL_MODE:
 930                 return(s->mode|=larg);
 931         case SSL_CTRL_GET_MAX_CERT_LIST:
 932                 return(s->max_cert_list);
 933         case SSL_CTRL_SET_MAX_CERT_LIST:
 934                 l=s->max_cert_list;
 935                 s->max_cert_list=larg;
 936                 return(l);
 937         default:
 938                 return(s->method->ssl_ctrl(s,cmd,larg,parg));
 939                 }
 940         }
 941
 942 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
 943         {
 944         switch(cmd)
 945                 {
 946         case SSL_CTRL_SET_MSG_CALLBACK:
 947                 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
 948                 return 1;
 949
 950         default:
 951                 return(s->method->ssl_callback_ctrl(s,cmd,fp));
 952                 }
 953         }
 954
 955 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
 956         {
 957         return ctx->sessions;
 958         }
 959
 960 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
 961         {
 962         long l;
 963
 964         switch (cmd)
 965                 {
 966         case SSL_CTRL_GET_READ_AHEAD:
 967                 return(ctx->read_ahead);
 968         case SSL_CTRL_SET_READ_AHEAD:
 969                 l=ctx->read_ahead;
 970                 ctx->read_ahead=larg;
 971                 return(l);
 972
 973         case SSL_CTRL_SET_MSG_CALLBACK_ARG:
 974                 ctx->msg_callback_arg = parg;
 975                 return 1;
 976
 977         case SSL_CTRL_GET_MAX_CERT_LIST:
 978                 return(ctx->max_cert_list);
 979         case SSL_CTRL_SET_MAX_CERT_LIST:
 980                 l=ctx->max_cert_list;
 981                 ctx->max_cert_list=larg;
 982                 return(l);
 983
 984         case SSL_CTRL_SET_SESS_CACHE_SIZE:
 985                 l=ctx->session_cache_size;
 986                 ctx->session_cache_size=larg;
 987                 return(l);
 988         case SSL_CTRL_GET_SESS_CACHE_SIZE:
 989                 return(ctx->session_cache_size);
 990         case SSL_CTRL_SET_SESS_CACHE_MODE:
 991                 l=ctx->session_cache_mode;
 992                 ctx->session_cache_mode=larg;
 993                 return(l);
 994         case SSL_CTRL_GET_SESS_CACHE_MODE:
 995                 return(ctx->session_cache_mode);
 996
 997         case SSL_CTRL_SESS_NUMBER:
 998                 return(ctx->sessions->num_items);
 999         case SSL_CTRL_SESS_CONNECT:
1000                 return(ctx->stats.sess_connect);
1001         case SSL_CTRL_SESS_CONNECT_GOOD:
1002                 return(ctx->stats.sess_connect_good);
1003         case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1004                 return(ctx->stats.sess_connect_renegotiate);
1005         case SSL_CTRL_SESS_ACCEPT:
1006                 return(ctx->stats.sess_accept);
1007         case SSL_CTRL_SESS_ACCEPT_GOOD:
1008                 return(ctx->stats.sess_accept_good);
1009         case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1010                 return(ctx->stats.sess_accept_renegotiate);
1011         case SSL_CTRL_SESS_HIT:
1012                 return(ctx->stats.sess_hit);
1013         case SSL_CTRL_SESS_CB_HIT:
1014                 return(ctx->stats.sess_cb_hit);
1015         case SSL_CTRL_SESS_MISSES:
1016                 return(ctx->stats.sess_miss);
1017         case SSL_CTRL_SESS_TIMEOUTS:
1018                 return(ctx->stats.sess_timeout);
1019         case SSL_CTRL_SESS_CACHE_FULL:
1020                 return(ctx->stats.sess_cache_full);
1021         case SSL_CTRL_OPTIONS:
1022                 return(ctx->options|=larg);
1023         case SSL_CTRL_MODE:
1024                 return(ctx->mode|=larg);
1025         default:
1026                 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1027                 }
1028         }
1029
1030 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
1031         {
1032         switch(cmd)
1033                 {
1034         case SSL_CTRL_SET_MSG_CALLBACK:
1035                 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1036                 return 1;
1037
1038         default:
1039                 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1040                 }
1041         }
1042
1043 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1044         {
1045         long l;
1046
1047         l=a->id-b->id;
1048         if (l == 0L)
1049                 return(0);
1050         else
1051                 return((l > 0)?1:-1);
1052         }
1053
1054 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1055                         const SSL_CIPHER * const *bp)
1056         {
1057         long l;
1058
1059         l=(*ap)->id-(*bp)->id;
1060         if (l == 0L)
1061                 return(0);
1062         else
1063                 return((l > 0)?1:-1);
1064         }
1065
1066 /** return a STACK of the ciphers available for the SSL and in order of
1067  * preference */
1068 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
1069         {
1070         if ((s != NULL) && (s->cipher_list != NULL))
1071                 {
1072                 return(s->cipher_list);
1073                 }
1074         else if ((s->ctx != NULL) &&
1075                 (s->ctx->cipher_list != NULL))
1076                 {
1077                 return(s->ctx->cipher_list);
1078                 }
1079         return(NULL);
1080         }
1081
1082 /** return a STACK of the ciphers available for the SSL and in order of
1083  * algorithm id */
1084 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1085         {
1086         if ((s != NULL) && (s->cipher_list_by_id != NULL))
1087                 {
1088                 return(s->cipher_list_by_id);
1089                 }
1090         else if ((s != NULL) && (s->ctx != NULL) &&
1091                 (s->ctx->cipher_list_by_id != NULL))
1092                 {
1093                 return(s->ctx->cipher_list_by_id);
1094                 }
1095         return(NULL);
1096         }
1097
1098 /** The old interface to get the same thing as SSL_get_ciphers() */
1099 const char *SSL_get_cipher_list(SSL *s,int n)
1100         {
1101         SSL_CIPHER *c;
1102         STACK_OF(SSL_CIPHER) *sk;
1103
1104         if (s == NULL) return(NULL);
1105         sk=SSL_get_ciphers(s);
1106         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1107                 return(NULL);
1108         c=sk_SSL_CIPHER_value(sk,n);
1109         if (c == NULL) return(NULL);
1110         return(c->name);
1111         }
1112
1113 /** specify the ciphers to be used by default by the SSL_CTX */
1114 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1115         {
1116         STACK_OF(SSL_CIPHER) *sk;
1117
1118         sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1119                 &ctx->cipher_list_by_id,str);
1120 /* XXXX */
1121         return((sk == NULL)?0:1);
1122         }
1123
1124 /** specify the ciphers to be used by the SSL */
1125 int SSL_set_cipher_list(SSL *s,const char *str)
1126         {
1127         STACK_OF(SSL_CIPHER) *sk;
1128
1129         sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1130                 &s->cipher_list_by_id,str);
1131 /* XXXX */
1132         return((sk == NULL)?0:1);
1133         }
1134
1135 /* works well for SSLv2, not so good for SSLv3 */
1136 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
1137         {
1138         char *p;
1139         const char *cp;
1140         STACK_OF(SSL_CIPHER) *sk;
1141         SSL_CIPHER *c;
1142         int i;
1143
1144         if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1145                 (len < 2))
1146                 return(NULL);
1147
1148         p=buf;
1149         sk=s->session->ciphers;
1150         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1151                 {
1152                 /* Decrement for either the ':' or a '\0' */
1153                 len--;
1154                 c=sk_SSL_CIPHER_value(sk,i);
1155                 for (cp=c->name; *cp; )
1156                         {
1157                         if (len-- == 0)
1158                                 {
1159                                 *p='\0';
1160                                 return(buf);
1161                                 }
1162                         else
1163                                 *(p++)= *(cp++);
1164                         }
1165                 *(p++)=':';
1166                 }
1167         p[-1]='\0';
1168         return(buf);
1169         }
1170
1171 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
1172         {
1173         int i,j=0;
1174         SSL_CIPHER *c;
1175         unsigned char *q;
1176 #ifndef OPENSSL_NO_KRB5
1177         int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1178 #endif /* OPENSSL_NO_KRB5 */
1179
1180         if (sk == NULL) return(0);
1181         q=p;
1182
1183         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1184                 {
1185                 c=sk_SSL_CIPHER_value(sk,i);
1186 #ifndef OPENSSL_NO_KRB5
1187                 if ((c->algorithms & SSL_KRB5) && nokrb5)
1188                     continue;
1189 #endif /* OPENSSL_NO_KRB5 */
1190                 j=ssl_put_cipher_by_char(s,c,p);
1191                 p+=j;
1192                 }
1193         return(p-q);
1194         }
1195
1196 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1197                                                STACK_OF(SSL_CIPHER) **skp)
1198         {
1199         SSL_CIPHER *c;
1200         STACK_OF(SSL_CIPHER) *sk;
1201         int i,n;
1202
1203         n=ssl_put_cipher_by_char(s,NULL,NULL);
1204         if ((num%n) != 0)
1205                 {
1206                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1207                 return(NULL);
1208                 }
1209         if ((skp == NULL) || (*skp == NULL))
1210                 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1211         else
1212                 {
1213                 sk= *skp;
1214                 sk_SSL_CIPHER_zero(sk);
1215                 }
1216
1217         for (i=0; i<num; i+=n)
1218                 {
1219                 c=ssl_get_cipher_by_char(s,p);
1220                 p+=n;
1221                 if (c != NULL)
1222                         {
1223                         if (!sk_SSL_CIPHER_push(sk,c))
1224                                 {
1225                                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1226                                 goto err;
1227                                 }
1228                         }
1229                 }
1230
1231         if (skp != NULL)
1232                 *skp=sk;
1233         return(sk);
1234 err:
1235         if ((skp == NULL) || (*skp == NULL))
1236                 sk_SSL_CIPHER_free(sk);
1237         return(NULL);
1238         }
1239
1240 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1241         {
1242         unsigned long l;
1243
1244         l=(unsigned long)
1245                 ((unsigned int) a->session_id[0]     )|
1246                 ((unsigned int) a->session_id[1]<< 8L)|
1247                 ((unsigned long)a->session_id[2]<<16L)|
1248                 ((unsigned long)a->session_id[3]<<24L);
1249         return(l);
1250         }
1251
1252 /* NB: If this function (or indeed the hash function which uses a sort of
1253  * coarser function than this one) is changed, ensure
1254  * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1255  * able to construct an SSL_SESSION that will collide with any existing session
1256  * with a matching session ID. */
1257 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1258         {
1259         if (a->ssl_version != b->ssl_version)
1260                 return(1);
1261         if (a->session_id_length != b->session_id_length)
1262                 return(1);
1263         return(memcmp(a->session_id,b->session_id,a->session_id_length));
1264         }
1265
1266 /* These wrapper functions should remain rather than redeclaring
1267  * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1268  * variable. The reason is that the functions aren't static, they're exposed via
1269  * ssl.h. */
1270 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1271 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1272
1273 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1274         {
1275         SSL_CTX *ret=NULL;
1276
1277         if (meth == NULL)
1278                 {
1279                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1280                 return(NULL);
1281                 }
1282
1283         if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1284                 {
1285                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1286                 goto err;
1287                 }
1288         ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1289         if (ret == NULL)
1290                 goto err;
1291
1292         memset(ret,0,sizeof(SSL_CTX));
1293
1294         ret->method=meth;
1295
1296         ret->cert_store=NULL;
1297         ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1298         ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1299         ret->session_cache_head=NULL;
1300         ret->session_cache_tail=NULL;
1301
1302         /* We take the system default */
1303         ret->session_timeout=meth->get_timeout();
1304
1305         ret->new_session_cb=0;
1306         ret->remove_session_cb=0;
1307         ret->get_session_cb=0;
1308         ret->generate_session_id=0;
1309
1310         memset((char *)&ret->stats,0,sizeof(ret->stats));
1311
1312         ret->references=1;
1313         ret->quiet_shutdown=0;
1314
1315 /*      ret->cipher=NULL;*/
1316 /*      ret->s2->challenge=NULL;
1317         ret->master_key=NULL;
1318         ret->key_arg=NULL;
1319         ret->s2->conn_id=NULL; */
1320
1321         ret->info_callback=NULL;
1322
1323         ret->app_verify_callback=0;
1324         ret->app_verify_arg=NULL;
1325
1326         ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1327         ret->read_ahead=0;
1328         ret->msg_callback=0;
1329         ret->msg_callback_arg=NULL;
1330         ret->verify_mode=SSL_VERIFY_NONE;
1331         ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1332         ret->sid_ctx_length=0;
1333         ret->default_verify_callback=NULL;
1334         if ((ret->cert=ssl_cert_new()) == NULL)
1335                 goto err;
1336
1337         ret->default_passwd_callback=0;
1338         ret->default_passwd_callback_userdata=NULL;
1339         ret->client_cert_cb=0;
1340
1341         ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1342                         LHASH_COMP_FN(SSL_SESSION_cmp));
1343         if (ret->sessions == NULL) goto err;
1344         ret->cert_store=X509_STORE_new();
1345         if (ret->cert_store == NULL) goto err;
1346
1347         ssl_create_cipher_list(ret->method,
1348                 &ret->cipher_list,&ret->cipher_list_by_id,
1349                 SSL_DEFAULT_CIPHER_LIST);
1350         if (ret->cipher_list == NULL
1351             || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1352                 {
1353                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1354                 goto err2;
1355                 }
1356
1357         if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1358                 {
1359                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1360                 goto err2;
1361                 }
1362         if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1363                 {
1364                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1365                 goto err2;
1366                 }
1367         if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1368                 {
1369                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1370                 goto err2;
1371                 }
1372
1373         if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1374                 goto err;
1375
1376         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1377
1378         ret->extra_certs=NULL;
1379         ret->comp_methods=SSL_COMP_get_compression_methods();
1380
1381         return(ret);
1382 err:
1383         SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1384 err2:
1385         if (ret != NULL) SSL_CTX_free(ret);
1386         return(NULL);
1387         }
1388
1389 #if 0
1390 static void SSL_COMP_free(SSL_COMP *comp)
1391     { OPENSSL_free(comp); }
1392 #endif
1393
1394 void SSL_CTX_free(SSL_CTX *a)
1395         {
1396         int i;
1397
1398         if (a == NULL) return;
1399
1400         i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1401 #ifdef REF_PRINT
1402         REF_PRINT("SSL_CTX",a);
1403 #endif
1404         if (i > 0) return;
1405 #ifdef REF_CHECK
1406         if (i < 0)
1407                 {
1408                 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1409                 abort(); /* ok */
1410                 }
1411 #endif
1412         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1413
1414         if (a->sessions != NULL)
1415                 {
1416                 SSL_CTX_flush_sessions(a,0);
1417                 lh_free(a->sessions);
1418                 }
1419         if (a->cert_store != NULL)
1420                 X509_STORE_free(a->cert_store);
1421         if (a->cipher_list != NULL)
1422                 sk_SSL_CIPHER_free(a->cipher_list);
1423         if (a->cipher_list_by_id != NULL)
1424                 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1425         if (a->cert != NULL)
1426                 ssl_cert_free(a->cert);
1427         if (a->client_CA != NULL)
1428                 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1429         if (a->extra_certs != NULL)
1430                 sk_X509_pop_free(a->extra_certs,X509_free);
1431 #if 0 /* This should never be done, since it removes a global database */
1432         if (a->comp_methods != NULL)
1433                 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1434 #else
1435         a->comp_methods = NULL;
1436 #endif
1437         OPENSSL_free(a);
1438         }
1439
1440 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1441         {
1442         ctx->default_passwd_callback=cb;
1443         }
1444
1445 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1446         {
1447         ctx->default_passwd_callback_userdata=u;
1448         }
1449
1450 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1451         {
1452         ctx->app_verify_callback=cb;
1453         ctx->app_verify_arg=arg;
1454         }
1455
1456 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1457         {
1458         ctx->verify_mode=mode;
1459         ctx->default_verify_callback=cb;
1460         }
1461
1462 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1463         {
1464         ctx->verify_depth=depth;
1465         }
1466
1467 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1468         {
1469         CERT_PKEY *cpk;
1470         int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1471         int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1472         int rsa_tmp_export,dh_tmp_export,kl;
1473         unsigned long mask,emask;
1474         int have_ecc_cert, have_ecdh_tmp, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1475         X509 *x = NULL;
1476         EVP_PKEY *ecc_pkey = NULL;
1477         int signature_nid = 0;
1478
1479         if (c == NULL) return;
1480
1481         kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1482
1483 #ifndef OPENSSL_NO_RSA
1484         rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1485         rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1486                 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1487 #else
1488         rsa_tmp=rsa_tmp_export=0;
1489 #endif
1490 #ifndef OPENSSL_NO_DH
1491         dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1492         dh_tmp_export=(c->dh_tmp_cb != NULL ||
1493                 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1494 #else
1495         dh_tmp=dh_tmp_export=0;
1496 #endif
1497
1498 #ifndef OPENSSL_NO_ECDH
1499         have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1500 #endif
1501         cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1502         rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1503         rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1504         cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1505         rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1506         cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1507         dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1508         cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1509         dh_rsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
1510         dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1511         cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1512 /* FIX THIS EAY EAY EAY */
1513         dh_dsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
1514         dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1515         cpk= &(c->pkeys[SSL_PKEY_ECC]);
1516         have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1517         mask=0;
1518         emask=0;
1519
1520 #ifdef CIPHER_DEBUG
1521         printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1522                 rsa_tmp,rsa_tmp_export,dh_tmp,
1523                 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1524 #endif
1525
1526         if (rsa_enc || (rsa_tmp && rsa_sign))
1527                 mask|=SSL_kRSA;
1528         if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1529                 emask|=SSL_kRSA;
1530
1531 #if 0
1532         /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1533         if (    (dh_tmp || dh_rsa || dh_dsa) &&
1534                 (rsa_enc || rsa_sign || dsa_sign))
1535                 mask|=SSL_kEDH;
1536         if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1537                 (rsa_enc || rsa_sign || dsa_sign))
1538                 emask|=SSL_kEDH;
1539 #endif
1540
1541         if (dh_tmp_export)
1542                 emask|=SSL_kEDH;
1543
1544         if (dh_tmp)
1545                 mask|=SSL_kEDH;
1546
1547         if (dh_rsa) mask|=SSL_kDHr;
1548         if (dh_rsa_export) emask|=SSL_kDHr;
1549
1550         if (dh_dsa) mask|=SSL_kDHd;
1551         if (dh_dsa_export) emask|=SSL_kDHd;
1552
1553         if (rsa_enc || rsa_sign)
1554                 {
1555                 mask|=SSL_aRSA;
1556                 mask|=SSL_aRSA;
1557                 }
1558
1559         if (dsa_sign)
1560                 {
1561                 mask|=SSL_aDSS;
1562                 emask|=SSL_aDSS;
1563                 }
1564
1565         mask|=SSL_aNULL;
1566         emask|=SSL_aNULL;
1567
1568 #ifndef OPENSSL_NO_KRB5
1569         mask|=SSL_kKRB5|SSL_aKRB5;
1570         emask|=SSL_kKRB5|SSL_aKRB5;
1571 #endif
1572
1573         /* An ECC certificate may be usable for ECDH and/or
1574          * ECDSA cipher suites depending on the key usage extension.
1575          */
1576         if (have_ecc_cert)
1577                 {
1578                 /* This call populates extension flags (ex_flags) */
1579                 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1580                 X509_check_purpose(x, -1, 0);
1581                 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1582                     (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1583                 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1584                     (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1585                 ecc_pkey = X509_get_pubkey(x);
1586                 ecc_pkey_size = (ecc_pkey != NULL) ?
1587                     EVP_PKEY_bits(ecc_pkey) : 0;
1588                 EVP_PKEY_free(ecc_pkey);
1589                 if ((x->sig_alg) && (x->sig_alg->algorithm))
1590                         signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1591 #ifndef OPENSSL_NO_ECDH
1592                 if (ecdh_ok)
1593                         {
1594                         if ((signature_nid == NID_md5WithRSAEncryption) ||
1595                             (signature_nid == NID_md4WithRSAEncryption) ||
1596                             (signature_nid == NID_md2WithRSAEncryption))
1597                                 {
1598                                 mask|=SSL_kECDH|SSL_aRSA;
1599                                 if (ecc_pkey_size <= 163)
1600                                         emask|=SSL_kECDH|SSL_aRSA;
1601                                 }
1602                         if (signature_nid == NID_ecdsa_with_SHA1)
1603                                 {
1604                                 mask|=SSL_kECDH|SSL_aECDSA;
1605                                 if (ecc_pkey_size <= 163)
1606                                         emask|=SSL_kECDH|SSL_aECDSA;
1607                                 }
1608                         }
1609 #endif
1610 #ifndef OPENSSL_NO_ECDSA
1611                 if (ecdsa_ok)
1612                         {
1613                         mask|=SSL_aECDSA;
1614                         emask|=SSL_aECDSA;
1615                         }
1616 #endif
1617                 }
1618
1619 #ifndef OPENSSL_NO_ECDH
1620         if (have_ecdh_tmp)
1621                 {
1622                 mask|=SSL_kECDHE;
1623                 emask|=SSL_kECDHE;
1624                 }
1625 #endif
1626         c->mask=mask;
1627         c->export_mask=emask;
1628         c->valid=1;
1629         }
1630
1631 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
1632 #define ku_reject(x, usage) \
1633         (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
1634
1635 int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs)
1636         {
1637         unsigned long alg = cs->algorithms;
1638         EVP_PKEY *pkey = NULL;
1639         int keysize = 0;
1640         int signature_nid = 0;
1641
1642         if (SSL_C_IS_EXPORT(cs))
1643                 {
1644                 /* ECDH key length in export ciphers must be <= 163 bits */
1645                 pkey = X509_get_pubkey(x);
1646                 if (pkey == NULL) return 0;
1647                 keysize = EVP_PKEY_bits(pkey);
1648                 EVP_PKEY_free(pkey);
1649                 if (keysize > 163) return 0;
1650                 }
1651
1652         /* This call populates the ex_flags field correctly */
1653         X509_check_purpose(x, -1, 0);
1654         if ((x->sig_alg) && (x->sig_alg->algorithm))
1655                 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1656         if (alg & SSL_kECDH)
1657                 {
1658                 /* key usage, if present, must allow key agreement */
1659                 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
1660                         {
1661                         return 0;
1662                         }
1663                 if (alg & SSL_aECDSA)
1664                         {
1665                         /* signature alg must be ECDSA */
1666                         if (signature_nid != NID_ecdsa_with_SHA1)
1667                                 {
1668                                 return 0;
1669                                 }
1670                         }
1671                 if (alg & SSL_aRSA)
1672                         {
1673                         /* signature alg must be RSA */
1674                         if ((signature_nid != NID_md5WithRSAEncryption) &&
1675                             (signature_nid != NID_md4WithRSAEncryption) &&
1676                             (signature_nid != NID_md2WithRSAEncryption))
1677                                 {
1678                                 return 0;
1679                                 }
1680                         }
1681                 }
1682         else if (alg & SSL_aECDSA)
1683                 {
1684                 /* key usage, if present, must allow signing */
1685                 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
1686                         {
1687                         return 0;
1688                         }
1689                 }
1690
1691         return 1;  /* all checks are ok */
1692         }
1693
1694 /* THIS NEEDS CLEANING UP */
1695 X509 *ssl_get_server_send_cert(SSL *s)
1696         {
1697         unsigned long alg,mask,kalg;
1698         CERT *c;
1699         int i,is_export;
1700
1701         c=s->cert;
1702         ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1703         alg=s->s3->tmp.new_cipher->algorithms;
1704         is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1705         mask=is_export?c->export_mask:c->mask;
1706         kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1707
1708         if (kalg & SSL_kECDH)
1709                 {
1710                 /* we don't need to look at SSL_kECDHE
1711                  * since no certificate is needed for
1712                  * anon ECDH and for authenticated
1713                  * ECDHE, the check for the auth
1714                  * algorithm will set i correctly
1715                  * NOTE: For ECDH-RSA, we need an ECC
1716                  * not an RSA cert but for ECDHE-RSA
1717                  * we need an RSA cert. Placing the
1718                  * checks for SSL_kECDH before RSA
1719                  * checks ensures the correct cert is chosen.
1720                  */
1721                 i=SSL_PKEY_ECC;
1722                 }
1723         else if (kalg & SSL_aECDSA)
1724                 {
1725                 i=SSL_PKEY_ECC;
1726                 }
1727         else if (kalg & SSL_kDHr)
1728                 i=SSL_PKEY_DH_RSA;
1729         else if (kalg & SSL_kDHd)
1730                 i=SSL_PKEY_DH_DSA;
1731         else if (kalg & SSL_aDSS)
1732                 i=SSL_PKEY_DSA_SIGN;
1733         else if (kalg & SSL_aRSA)
1734                 {
1735                 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1736                         i=SSL_PKEY_RSA_SIGN;
1737                 else
1738                         i=SSL_PKEY_RSA_ENC;
1739                 }
1740         else if (kalg & SSL_aKRB5)
1741                 {
1742                 /* VRS something else here? */
1743                 return(NULL);
1744                 }
1745         else /* if (kalg & SSL_aNULL) */
1746                 {
1747                 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1748                 return(NULL);
1749                 }
1750         if (c->pkeys[i].x509 == NULL) return(NULL);
1751
1752         return(c->pkeys[i].x509);
1753         }
1754
1755 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1756         {
1757         unsigned long alg;
1758         CERT *c;
1759
1760         alg=cipher->algorithms;
1761         c=s->cert;
1762
1763         if ((alg & SSL_aDSS) &&
1764                 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1765                 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1766         else if (alg & SSL_aRSA)
1767                 {
1768                 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1769                         return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1770                 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1771                         return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1772                 else
1773                         return(NULL);
1774                 }
1775         else if ((alg & SSL_aECDSA) &&
1776                  (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
1777                 return(c->pkeys[SSL_PKEY_ECC].privatekey);
1778         else /* if (alg & SSL_aNULL) */
1779                 {
1780                 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
1781                 return(NULL);
1782                 }
1783         }
1784
1785 void ssl_update_cache(SSL *s,int mode)
1786         {
1787         int i;
1788
1789         /* If the session_id_length is 0, we are not supposed to cache it,
1790          * and it would be rather hard to do anyway :-) */
1791         if (s->session->session_id_length == 0) return;
1792
1793         i=s->ctx->session_cache_mode;
1794         if ((i & mode) && (!s->hit)
1795                 && ((i & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)
1796                     || SSL_CTX_add_session(s->ctx,s->session))
1797                 && (s->ctx->new_session_cb != NULL))
1798                 {
1799                 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1800                 if (!s->ctx->new_session_cb(s,s->session))
1801                         SSL_SESSION_free(s->session);
1802                 }
1803
1804         /* auto flush every 255 connections */
1805         if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1806                 ((i & mode) == mode))
1807                 {
1808                 if (  (((mode & SSL_SESS_CACHE_CLIENT)
1809                         ?s->ctx->stats.sess_connect_good
1810                         :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1811                         {
1812                         SSL_CTX_flush_sessions(s->ctx,time(NULL));
1813                         }
1814                 }
1815         }
1816
1817 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1818         {
1819         return(s->method);
1820         }
1821
1822 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1823         {
1824         int conn= -1;
1825         int ret=1;
1826
1827         if (s->method != meth)
1828                 {
1829                 if (s->handshake_func != NULL)
1830                         conn=(s->handshake_func == s->method->ssl_connect);
1831
1832                 if (s->method->version == meth->version)
1833                         s->method=meth;
1834                 else
1835                         {
1836                         s->method->ssl_free(s);
1837                         s->method=meth;
1838                         ret=s->method->ssl_new(s);
1839                         }
1840
1841                 if (conn == 1)
1842                         s->handshake_func=meth->ssl_connect;
1843                 else if (conn == 0)
1844                         s->handshake_func=meth->ssl_accept;
1845                 }
1846         return(ret);
1847         }
1848
1849 int SSL_get_error(SSL *s,int i)
1850         {
1851         int reason;
1852         unsigned long l;
1853         BIO *bio;
1854
1855         if (i > 0) return(SSL_ERROR_NONE);
1856
1857         /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1858          * etc, where we do encode the error */
1859         if ((l=ERR_peek_error()) != 0)
1860                 {
1861                 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1862                         return(SSL_ERROR_SYSCALL);
1863                 else
1864                         return(SSL_ERROR_SSL);
1865                 }
1866
1867         if ((i < 0) && SSL_want_read(s))
1868                 {
1869                 bio=SSL_get_rbio(s);
1870                 if (BIO_should_read(bio))
1871                         return(SSL_ERROR_WANT_READ);
1872                 else if (BIO_should_write(bio))
1873                         /* This one doesn't make too much sense ... We never try
1874                          * to write to the rbio, and an application program where
1875                          * rbio and wbio are separate couldn't even know what it
1876                          * should wait for.
1877                          * However if we ever set s->rwstate incorrectly
1878                          * (so that we have SSL_want_read(s) instead of
1879                          * SSL_want_write(s)) and rbio and wbio *are* the same,
1880                          * this test works around that bug; so it might be safer
1881                          * to keep it. */
1882                         return(SSL_ERROR_WANT_WRITE);
1883                 else if (BIO_should_io_special(bio))
1884                         {
1885                         reason=BIO_get_retry_reason(bio);
1886                         if (reason == BIO_RR_CONNECT)
1887                                 return(SSL_ERROR_WANT_CONNECT);
1888                         else if (reason == BIO_RR_ACCEPT)
1889                                 return(SSL_ERROR_WANT_ACCEPT);
1890                         else
1891                                 return(SSL_ERROR_SYSCALL); /* unknown */
1892                         }
1893                 }
1894
1895         if ((i < 0) && SSL_want_write(s))
1896                 {
1897                 bio=SSL_get_wbio(s);
1898                 if (BIO_should_write(bio))
1899                         return(SSL_ERROR_WANT_WRITE);
1900                 else if (BIO_should_read(bio))
1901                         /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1902                         return(SSL_ERROR_WANT_READ);
1903                 else if (BIO_should_io_special(bio))
1904                         {
1905                         reason=BIO_get_retry_reason(bio);
1906                         if (reason == BIO_RR_CONNECT)
1907                                 return(SSL_ERROR_WANT_CONNECT);
1908                         else if (reason == BIO_RR_ACCEPT)
1909                                 return(SSL_ERROR_WANT_ACCEPT);
1910                         else
1911                                 return(SSL_ERROR_SYSCALL);
1912                         }
1913                 }
1914         if ((i < 0) && SSL_want_x509_lookup(s))
1915                 {
1916                 return(SSL_ERROR_WANT_X509_LOOKUP);
1917                 }
1918
1919         if (i == 0)
1920                 {
1921                 if (s->version == SSL2_VERSION)
1922                         {
1923                         /* assume it is the socket being closed */
1924                         return(SSL_ERROR_ZERO_RETURN);
1925                         }
1926                 else
1927                         {
1928                         if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1929                                 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1930                                 return(SSL_ERROR_ZERO_RETURN);
1931                         }
1932                 }
1933         return(SSL_ERROR_SYSCALL);
1934         }
1935
1936 int SSL_do_handshake(SSL *s)
1937         {
1938         int ret=1;
1939
1940         if (s->handshake_func == NULL)
1941                 {
1942                 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1943                 return(-1);
1944                 }
1945
1946         s->method->ssl_renegotiate_check(s);
1947
1948         if (SSL_in_init(s) || SSL_in_before(s))
1949                 {
1950                 ret=s->handshake_func(s);
1951                 }
1952         return(ret);
1953         }
1954
1955 /* For the next 2 functions, SSL_clear() sets shutdown and so
1956  * one of these calls will reset it */
1957 void SSL_set_accept_state(SSL *s)
1958         {
1959         s->server=1;
1960         s->shutdown=0;
1961         s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1962         s->handshake_func=s->method->ssl_accept;
1963         /* clear the current cipher */
1964         ssl_clear_cipher_ctx(s);
1965         }
1966
1967 void SSL_set_connect_state(SSL *s)
1968         {
1969         s->server=0;
1970         s->shutdown=0;
1971         s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1972         s->handshake_func=s->method->ssl_connect;
1973         /* clear the current cipher */
1974         ssl_clear_cipher_ctx(s);
1975         }
1976
1977 int ssl_undefined_function(SSL *s)
1978         {
1979         SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1980         return(0);
1981         }
1982
1983 SSL_METHOD *ssl_bad_method(int ver)
1984         {
1985         SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1986         return(NULL);
1987         }
1988
1989 const char *SSL_get_version(SSL *s)
1990         {
1991         if (s->version == TLS1_VERSION)
1992                 return("TLSv1");
1993         else if (s->version == SSL3_VERSION)
1994                 return("SSLv3");
1995         else if (s->version == SSL2_VERSION)
1996                 return("SSLv2");
1997         else
1998                 return("unknown");
1999         }
2000
2001 SSL *SSL_dup(SSL *s)
2002         {
2003         STACK_OF(X509_NAME) *sk;
2004         X509_NAME *xn;
2005         SSL *ret;
2006         int i;
2007
2008         if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2009             return(NULL);
2010
2011         ret->version = s->version;
2012         ret->type = s->type;
2013         ret->method = s->method;
2014
2015         if (s->session != NULL)
2016                 {
2017                 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2018                 SSL_copy_session_id(ret,s);
2019                 }
2020         else
2021                 {
2022                 /* No session has been established yet, so we have to expect
2023                  * that s->cert or ret->cert will be changed later --
2024                  * they should not both point to the same object,
2025                  * and thus we can't use SSL_copy_session_id. */
2026
2027                 ret->method = s->method;
2028                 ret->method->ssl_new(ret);
2029
2030                 if (s->cert != NULL)
2031                         {
2032                         if (ret->cert != NULL)
2033                                 {
2034                                 ssl_cert_free(ret->cert);
2035                                 }
2036                         ret->cert = ssl_cert_dup(s->cert);
2037                         if (ret->cert == NULL)
2038                                 goto err;
2039                         }
2040
2041                 SSL_set_session_id_context(ret,
2042                         s->sid_ctx, s->sid_ctx_length);
2043                 }
2044
2045         ret->options=s->options;
2046         ret->mode=s->mode;
2047         SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2048         SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2049         ret->msg_callback = s->msg_callback;
2050         ret->msg_callback_arg = s->msg_callback_arg;
2051         SSL_set_verify(ret,SSL_get_verify_mode(s),
2052                 SSL_get_verify_callback(s));
2053         SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2054         ret->generate_session_id = s->generate_session_id;
2055
2056         SSL_set_info_callback(ret,SSL_get_info_callback(s));
2057
2058         ret->debug=s->debug;
2059
2060         /* copy app data, a little dangerous perhaps */
2061         if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2062                 goto err;
2063
2064         /* setup rbio, and wbio */
2065         if (s->rbio != NULL)
2066                 {
2067                 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2068                         goto err;
2069                 }
2070         if (s->wbio != NULL)
2071                 {
2072                 if (s->wbio != s->rbio)
2073                         {
2074                         if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2075                                 goto err;
2076                         }
2077                 else
2078                         ret->wbio=ret->rbio;
2079                 }
2080         ret->rwstate = s->rwstate;
2081         ret->in_handshake = s->in_handshake;
2082         ret->handshake_func = s->handshake_func;
2083         ret->server = s->server;
2084         ret->new_session = s->new_session;
2085         ret->quiet_shutdown = s->quiet_shutdown;
2086         ret->shutdown=s->shutdown;
2087         ret->state=s->state; /* SSL_dup does not really work at any state, though */
2088         ret->rstate=s->rstate;
2089         ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2090         ret->hit=s->hit;
2091         ret->purpose=s->purpose;
2092         ret->trust=s->trust;
2093
2094         /* dup the cipher_list and cipher_list_by_id stacks */
2095         if (s->cipher_list != NULL)
2096                 {
2097                 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2098                         goto err;
2099                 }
2100         if (s->cipher_list_by_id != NULL)
2101                 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2102                         == NULL)
2103                         goto err;
2104
2105         /* Dup the client_CA list */
2106         if (s->client_CA != NULL)
2107                 {
2108                 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2109                 ret->client_CA=sk;
2110                 for (i=0; i<sk_X509_NAME_num(sk); i++)
2111                         {
2112                         xn=sk_X509_NAME_value(sk,i);
2113                         if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2114                                 {
2115                                 X509_NAME_free(xn);
2116                                 goto err;
2117                                 }
2118                         }
2119                 }
2120
2121         if (0)
2122                 {
2123 err:
2124                 if (ret != NULL) SSL_free(ret);
2125                 ret=NULL;
2126                 }
2127         return(ret);
2128         }
2129
2130 void ssl_clear_cipher_ctx(SSL *s)
2131         {
2132         if (s->enc_read_ctx != NULL)
2133                 {
2134                 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2135                 OPENSSL_free(s->enc_read_ctx);
2136                 s->enc_read_ctx=NULL;
2137                 }
2138         if (s->enc_write_ctx != NULL)
2139                 {
2140                 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2141                 OPENSSL_free(s->enc_write_ctx);
2142                 s->enc_write_ctx=NULL;
2143                 }
2144         if (s->expand != NULL)
2145                 {
2146                 COMP_CTX_free(s->expand);
2147                 s->expand=NULL;
2148                 }
2149         if (s->compress != NULL)
2150                 {
2151                 COMP_CTX_free(s->compress);
2152                 s->compress=NULL;
2153                 }
2154         }
2155
2156 /* Fix this function so that it takes an optional type parameter */
2157 X509 *SSL_get_certificate(SSL *s)
2158         {
2159         if (s->cert != NULL)
2160                 return(s->cert->key->x509);
2161         else
2162                 return(NULL);
2163         }
2164
2165 /* Fix this function so that it takes an optional type parameter */
2166 EVP_PKEY *SSL_get_privatekey(SSL *s)
2167         {
2168         if (s->cert != NULL)
2169                 return(s->cert->key->privatekey);
2170         else
2171                 return(NULL);
2172         }
2173
2174 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
2175         {
2176         if ((s->session != NULL) && (s->session->cipher != NULL))
2177                 return(s->session->cipher);
2178         return(NULL);
2179         }
2180
2181 int ssl_init_wbio_buffer(SSL *s,int push)
2182         {
2183         BIO *bbio;
2184
2185         if (s->bbio == NULL)
2186                 {
2187                 bbio=BIO_new(BIO_f_buffer());
2188                 if (bbio == NULL) return(0);
2189                 s->bbio=bbio;
2190                 }
2191         else
2192                 {
2193                 bbio=s->bbio;
2194                 if (s->bbio == s->wbio)
2195                         s->wbio=BIO_pop(s->wbio);
2196                 }
2197         (void)BIO_reset(bbio);
2198 /*      if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2199         if (!BIO_set_read_buffer_size(bbio,1))
2200                 {
2201                 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2202                 return(0);
2203                 }
2204         if (push)
2205                 {
2206                 if (s->wbio != bbio)
2207                         s->wbio=BIO_push(bbio,s->wbio);
2208                 }
2209         else
2210                 {
2211                 if (s->wbio == bbio)
2212                         s->wbio=BIO_pop(bbio);
2213                 }
2214         return(1);
2215         }
2216
2217 void ssl_free_wbio_buffer(SSL *s)
2218         {
2219         if (s->bbio == NULL) return;
2220
2221         if (s->bbio == s->wbio)
2222                 {
2223                 /* remove buffering */
2224                 s->wbio=BIO_pop(s->wbio);
2225 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2226                 assert(s->wbio != NULL);
2227 #endif
2228         }
2229         BIO_free(s->bbio);
2230         s->bbio=NULL;
2231         }
2232
2233 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2234         {
2235         ctx->quiet_shutdown=mode;
2236         }
2237
2238 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
2239         {
2240         return(ctx->quiet_shutdown);
2241         }
2242
2243 void SSL_set_quiet_shutdown(SSL *s,int mode)
2244         {
2245         s->quiet_shutdown=mode;
2246         }
2247
2248 int SSL_get_quiet_shutdown(SSL *s)
2249         {
2250         return(s->quiet_shutdown);
2251         }
2252
2253 void SSL_set_shutdown(SSL *s,int mode)
2254         {
2255         s->shutdown=mode;
2256         }
2257
2258 int SSL_get_shutdown(SSL *s)
2259         {
2260         return(s->shutdown);
2261         }
2262
2263 int SSL_version(SSL *s)
2264         {
2265         return(s->version);
2266         }
2267
2268 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
2269         {
2270         return(ssl->ctx);
2271         }
2272
2273 #ifndef OPENSSL_NO_STDIO
2274 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2275         {
2276         return(X509_STORE_set_default_paths(ctx->cert_store));
2277         }
2278
2279 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2280                 const char *CApath)
2281         {
2282         return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2283         }
2284 #endif
2285
2286 void SSL_set_info_callback(SSL *ssl,
2287                            void (*cb)(const SSL *ssl,int type,int val))
2288         {
2289         ssl->info_callback=cb;
2290         }
2291
2292 void (*SSL_get_info_callback(SSL *ssl))(const SSL *ssl,int type,int val)
2293         {
2294         return ssl->info_callback;
2295         }
2296
2297 int SSL_state(SSL *ssl)
2298         {
2299         return(ssl->state);
2300         }
2301
2302 void SSL_set_verify_result(SSL *ssl,long arg)
2303         {
2304         ssl->verify_result=arg;
2305         }
2306
2307 long SSL_get_verify_result(SSL *ssl)
2308         {
2309         return(ssl->verify_result);
2310         }
2311
2312 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2313                          CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2314         {
2315         return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2316                                 new_func, dup_func, free_func);
2317         }
2318
2319 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2320         {
2321         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2322         }
2323
2324 void *SSL_get_ex_data(SSL *s,int idx)
2325         {
2326         return(CRYPTO_get_ex_data(&s->ex_data,idx));
2327         }
2328
2329 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2330                              CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2331         {
2332         return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2333                                 new_func, dup_func, free_func);
2334         }
2335
2336 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2337         {
2338         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2339         }
2340
2341 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
2342         {
2343         return(CRYPTO_get_ex_data(&s->ex_data,idx));
2344         }
2345
2346 int ssl_ok(SSL *s)
2347         {
2348         return(1);
2349         }
2350
2351 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
2352         {
2353         return(ctx->cert_store);
2354         }
2355
2356 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2357         {
2358         if (ctx->cert_store != NULL)
2359                 X509_STORE_free(ctx->cert_store);
2360         ctx->cert_store=store;
2361         }
2362
2363 int SSL_want(SSL *s)
2364         {
2365         return(s->rwstate);
2366         }
2367
2368 /*!
2369  * \brief Set the callback for generating temporary RSA keys.
2370  * \param ctx the SSL context.
2371  * \param cb the callback
2372  */
2373
2374 #ifndef OPENSSL_NO_RSA
2375 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2376                                                           int is_export,
2377                                                           int keylength))
2378     {
2379     SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2380     }
2381
2382 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2383                                                   int is_export,
2384                                                   int keylength))
2385     {
2386     SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2387     }
2388 #endif
2389
2390 #ifdef DOXYGEN
2391 /*!
2392  * \brief The RSA temporary key callback function.
2393  * \param ssl the SSL session.
2394  * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2395  * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2396  * of the required key in bits.
2397  * \return the temporary RSA key.
2398  * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2399  */
2400
2401 RSA *cb(SSL *ssl,int is_export,int keylength)
2402     {}
2403 #endif
2404
2405 /*!
2406  * \brief Set the callback for generating temporary DH keys.
2407  * \param ctx the SSL context.
2408  * \param dh the callback
2409  */
2410
2411 #ifndef OPENSSL_NO_DH
2412 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2413                                                         int keylength))
2414         {
2415         SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2416         }
2417
2418 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2419                                                 int keylength))
2420         {
2421         SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2422         }
2423 #endif
2424
2425 #ifndef OPENSSL_NO_ECDH
2426 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2427                                                         int keylength))
2428         {
2429         SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)())ecdh);
2430         }
2431
2432 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2433                                                 int keylength))
2434         {
2435         SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)())ecdh);
2436         }
2437 #endif
2438
2439
2440 void SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
2441         {
2442         SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
2443         }
2444 void SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
2445         {
2446         SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
2447         }
2448
2449
2450
2451 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2452 #include "../crypto/bio/bss_file.c"
2453 #endif
2454
2455 IMPLEMENT_STACK_OF(SSL_CIPHER)
2456 IMPLEMENT_STACK_OF(SSL_COMP)