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 #include "cryptlib.h"
 129
 130 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
 131
 132 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
 133         /* evil casts, but these functions are only called if there's a library bug */
 134         (int (*)(SSL *,int))ssl_undefined_function,
 135         (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
 136         ssl_undefined_function,
 137         (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
 138         (int (*)(SSL*, int))ssl_undefined_function,
 139         (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
 140         };
 141
 142 int SSL_clear(SSL *s)
 143         {
 144
 145         if (s->method == NULL)
 146                 {
 147                 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
 148                 return(0);
 149                 }
 150
 151         if (ssl_clear_bad_session(s))
 152                 {
 153                 SSL_SESSION_free(s->session);
 154                 s->session=NULL;
 155                 }
 156
 157         s->error=0;
 158         s->hit=0;
 159         s->shutdown=0;
 160
 161 #if 0 /* Disabled since version 1.10 of this file (early return not
 162        * needed because SSL_clear is not called when doing renegotiation) */
 163         /* This is set if we are doing dynamic renegotiation so keep
 164          * the old cipher.  It is sort of a SSL_clear_lite :-) */
 165         if (s->new_session) return(1);
 166 #else
 167         if (s->new_session)
 168                 {
 169                 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
 170                 return 0;
 171                 }
 172 #endif
 173
 174         s->type=0;
 175
 176         s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
 177
 178         s->version=s->method->version;
 179         s->client_version=s->version;
 180         s->rwstate=SSL_NOTHING;
 181         s->rstate=SSL_ST_READ_HEADER;
 182 #if 0
 183         s->read_ahead=s->ctx->read_ahead;
 184 #endif
 185
 186         if (s->init_buf != NULL)
 187                 {
 188                 BUF_MEM_free(s->init_buf);
 189                 s->init_buf=NULL;
 190                 }
 191
 192         ssl_clear_cipher_ctx(s);
 193
 194         s->first_packet=0;
 195
 196 #if 1
 197         /* Check to see if we were changed into a different method, if
 198          * so, revert back if we are not doing session-id reuse. */
 199         if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
 200                 {
 201                 s->method->ssl_free(s);
 202                 s->method=s->ctx->method;
 203                 if (!s->method->ssl_new(s))
 204                         return(0);
 205                 }
 206         else
 207 #endif
 208                 s->method->ssl_clear(s);
 209         return(1);
 210         }
 211
 212 /** Used to change an SSL_CTXs default SSL method type */
 213 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
 214         {
 215         STACK_OF(SSL_CIPHER) *sk;
 216
 217         ctx->method=meth;
 218
 219         sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
 220                 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
 221         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
 222                 {
 223                 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
 224                 return(0);
 225                 }
 226         return(1);
 227         }
 228
 229 SSL *SSL_new(SSL_CTX *ctx)
 230         {
 231         SSL *s;
 232
 233         if (ctx == NULL)
 234                 {
 235                 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
 236                 return(NULL);
 237                 }
 238         if (ctx->method == NULL)
 239                 {
 240                 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
 241                 return(NULL);
 242                 }
 243
 244         s=(SSL *)OPENSSL_malloc(sizeof(SSL));
 245         if (s == NULL) goto err;
 246         memset(s,0,sizeof(SSL));
 247
 248 #ifndef OPENSSL_NO_KRB5
 249         s->kssl_ctx = kssl_ctx_new();
 250 #endif  /* OPENSSL_NO_KRB5 */
 251
 252         s->options=ctx->options;
 253         s->mode=ctx->mode;
 254         s->max_cert_list=ctx->max_cert_list;
 255
 256         if (ctx->cert != NULL)
 257                 {
 258                 /* Earlier library versions used to copy the pointer to
 259                  * the CERT, not its contents; only when setting new
 260                  * parameters for the per-SSL copy, ssl_cert_new would be
 261                  * called (and the direct reference to the per-SSL_CTX
 262                  * settings would be lost, but those still were indirectly
 263                  * accessed for various purposes, and for that reason they
 264                  * used to be known as s->ctx->default_cert).
 265                  * Now we don't look at the SSL_CTX's CERT after having
 266                  * duplicated it once. */
 267
 268                 s->cert = ssl_cert_dup(ctx->cert);
 269                 if (s->cert == NULL)
 270                         goto err;
 271                 }
 272         else
 273                 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
 274
 275         s->read_ahead=ctx->read_ahead;
 276         s->msg_callback=ctx->msg_callback;
 277         s->msg_callback_arg=ctx->msg_callback_arg;
 278         s->verify_mode=ctx->verify_mode;
 279         s->verify_depth=ctx->verify_depth;
 280         s->sid_ctx_length=ctx->sid_ctx_length;
 281         OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
 282         memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
 283         s->verify_callback=ctx->default_verify_callback;
 284         s->generate_session_id=ctx->generate_session_id;
 285         s->purpose = ctx->purpose;
 286         s->trust = ctx->trust;
 287         s->quiet_shutdown=ctx->quiet_shutdown;
 288
 289         CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
 290         s->ctx=ctx;
 291
 292         s->verify_result=X509_V_OK;
 293
 294         s->method=ctx->method;
 295
 296         if (!s->method->ssl_new(s))
 297                 goto err;
 298
 299         s->references=1;
 300         s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
 301
 302         SSL_clear(s);
 303
 304         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 305
 306         return(s);
 307 err:
 308         if (s != NULL)
 309                 {
 310                 if (s->cert != NULL)
 311                         ssl_cert_free(s->cert);
 312                 if (s->ctx != NULL)
 313                         SSL_CTX_free(s->ctx); /* decrement reference count */
 314                 OPENSSL_free(s);
 315                 }
 316         SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
 317         return(NULL);
 318         }
 319
 320 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
 321                                    unsigned int sid_ctx_len)
 322     {
 323     if(sid_ctx_len > sizeof ctx->sid_ctx)
 324         {
 325         SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
 326         return 0;
 327         }
 328     ctx->sid_ctx_length=sid_ctx_len;
 329     memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
 330
 331     return 1;
 332     }
 333
 334 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
 335                                unsigned int sid_ctx_len)
 336     {
 337     if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
 338         {
 339         SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
 340         return 0;
 341         }
 342     ssl->sid_ctx_length=sid_ctx_len;
 343     memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
 344
 345     return 1;
 346     }
 347
 348 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
 349         {
 350         CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
 351         ctx->generate_session_id = cb;
 352         CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
 353         return 1;
 354         }
 355
 356 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
 357         {
 358         CRYPTO_w_lock(CRYPTO_LOCK_SSL);
 359         ssl->generate_session_id = cb;
 360         CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
 361         return 1;
 362         }
 363
 364 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
 365                                 unsigned int id_len)
 366         {
 367         /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
 368          * we can "construct" a session to give us the desired check - ie. to
 369          * find if there's a session in the hash table that would conflict with
 370          * any new session built out of this id/id_len and the ssl_version in
 371          * use by this SSL. */
 372         SSL_SESSION r, *p;
 373
 374         if(id_len > sizeof r.session_id)
 375                 return 0;
 376
 377         r.ssl_version = ssl->version;
 378         r.session_id_length = id_len;
 379         memcpy(r.session_id, id, id_len);
 380         /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
 381          * callback is calling us to check the uniqueness of a shorter ID, it
 382          * must be compared as a padded-out ID because that is what it will be
 383          * converted to when the callback has finished choosing it. */
 384         if((r.ssl_version == SSL2_VERSION) &&
 385                         (id_len < SSL2_SSL_SESSION_ID_LENGTH))
 386                 {
 387                 memset(r.session_id + id_len, 0,
 388                         SSL2_SSL_SESSION_ID_LENGTH - id_len);
 389                 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
 390                 }
 391
 392         CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
 393         p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
 394         CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
 395         return (p != NULL);
 396         }
 397
 398 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
 399         {
 400         return X509_PURPOSE_set(&s->purpose, purpose);
 401         }
 402
 403 int SSL_set_purpose(SSL *s, int purpose)
 404         {
 405         return X509_PURPOSE_set(&s->purpose, purpose);
 406         }
 407
 408 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
 409         {
 410         return X509_TRUST_set(&s->trust, trust);
 411         }
 412
 413 int SSL_set_trust(SSL *s, int trust)
 414         {
 415         return X509_TRUST_set(&s->trust, trust);
 416         }
 417
 418 void SSL_free(SSL *s)
 419         {
 420         int i;
 421
 422         if(s == NULL)
 423             return;
 424
 425         i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
 426 #ifdef REF_PRINT
 427         REF_PRINT("SSL",s);
 428 #endif
 429         if (i > 0) return;
 430 #ifdef REF_CHECK
 431         if (i < 0)
 432                 {
 433                 fprintf(stderr,"SSL_free, bad reference count\n");
 434                 abort(); /* ok */
 435                 }
 436 #endif
 437
 438         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 439
 440         if (s->bbio != NULL)
 441                 {
 442                 /* If the buffering BIO is in place, pop it off */
 443                 if (s->bbio == s->wbio)
 444                         {
 445                         s->wbio=BIO_pop(s->wbio);
 446                         }
 447                 BIO_free(s->bbio);
 448                 s->bbio=NULL;
 449                 }
 450         if (s->rbio != NULL)
 451                 BIO_free_all(s->rbio);
 452         if ((s->wbio != NULL) && (s->wbio != s->rbio))
 453                 BIO_free_all(s->wbio);
 454
 455         if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
 456
 457         /* add extra stuff */
 458         if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
 459         if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
 460
 461         /* Make the next call work :-) */
 462         if (s->session != NULL)
 463                 {
 464                 ssl_clear_bad_session(s);
 465                 SSL_SESSION_free(s->session);
 466                 }
 467
 468         ssl_clear_cipher_ctx(s);
 469
 470         if (s->cert != NULL) ssl_cert_free(s->cert);
 471         /* Free up if allocated */
 472
 473         if (s->ctx) SSL_CTX_free(s->ctx);
 474
 475         if (s->client_CA != NULL)
 476                 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
 477
 478         if (s->method != NULL) s->method->ssl_free(s);
 479
 480         OPENSSL_free(s);
 481         }
 482
 483 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
 484         {
 485         /* If the output buffering BIO is still in place, remove it
 486          */
 487         if (s->bbio != NULL)
 488                 {
 489                 if (s->wbio == s->bbio)
 490                         {
 491                         s->wbio=s->wbio->next_bio;
 492                         s->bbio->next_bio=NULL;
 493                         }
 494                 }
 495         if ((s->rbio != NULL) && (s->rbio != rbio))
 496                 BIO_free_all(s->rbio);
 497         if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
 498                 BIO_free_all(s->wbio);
 499         s->rbio=rbio;
 500         s->wbio=wbio;
 501         }
 502
 503 BIO *SSL_get_rbio(SSL *s)
 504         { return(s->rbio); }
 505
 506 BIO *SSL_get_wbio(SSL *s)
 507         { return(s->wbio); }
 508
 509 int SSL_get_fd(SSL *s)
 510         {
 511         return(SSL_get_rfd(s));
 512         }
 513
 514 int SSL_get_rfd(SSL *s)
 515         {
 516         int ret= -1;
 517         BIO *b,*r;
 518
 519         b=SSL_get_rbio(s);
 520         r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
 521         if (r != NULL)
 522                 BIO_get_fd(r,&ret);
 523         return(ret);
 524         }
 525
 526 int SSL_get_wfd(SSL *s)
 527         {
 528         int ret= -1;
 529         BIO *b,*r;
 530
 531         b=SSL_get_wbio(s);
 532         r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
 533         if (r != NULL)
 534                 BIO_get_fd(r,&ret);
 535         return(ret);
 536         }
 537
 538 #ifndef OPENSSL_NO_SOCK
 539 int SSL_set_fd(SSL *s,int fd)
 540         {
 541         int ret=0;
 542         BIO *bio=NULL;
 543
 544         bio=BIO_new(BIO_s_socket());
 545
 546         if (bio == NULL)
 547                 {
 548                 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
 549                 goto err;
 550                 }
 551         BIO_set_fd(bio,fd,BIO_NOCLOSE);
 552         SSL_set_bio(s,bio,bio);
 553         ret=1;
 554 err:
 555         return(ret);
 556         }
 557
 558 int SSL_set_wfd(SSL *s,int fd)
 559         {
 560         int ret=0;
 561         BIO *bio=NULL;
 562
 563         if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
 564                 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
 565                 {
 566                 bio=BIO_new(BIO_s_socket());
 567
 568                 if (bio == NULL)
 569                         { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
 570                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 571                 SSL_set_bio(s,SSL_get_rbio(s),bio);
 572                 }
 573         else
 574                 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
 575         ret=1;
 576 err:
 577         return(ret);
 578         }
 579
 580 int SSL_set_rfd(SSL *s,int fd)
 581         {
 582         int ret=0;
 583         BIO *bio=NULL;
 584
 585         if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
 586                 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
 587                 {
 588                 bio=BIO_new(BIO_s_socket());
 589
 590                 if (bio == NULL)
 591                         {
 592                         SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
 593                         goto err;
 594                         }
 595                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 596                 SSL_set_bio(s,bio,SSL_get_wbio(s));
 597                 }
 598         else
 599                 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
 600         ret=1;
 601 err:
 602         return(ret);
 603         }
 604 #endif
 605
 606
 607 /* return length of latest Finished message we sent, copy to 'buf' */
 608 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
 609         {
 610         size_t ret = 0;
 611
 612         if (s->s3 != NULL)
 613                 {
 614                 ret = s->s3->tmp.finish_md_len;
 615                 if (count > ret)
 616                         count = ret;
 617                 memcpy(buf, s->s3->tmp.finish_md, count);
 618                 }
 619         return ret;
 620         }
 621
 622 /* return length of latest Finished message we expected, copy to 'buf' */
 623 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
 624         {
 625         size_t ret = 0;
 626
 627         if (s->s3 != NULL)
 628                 {
 629                 ret = s->s3->tmp.peer_finish_md_len;
 630                 if (count > ret)
 631                         count = ret;
 632                 memcpy(buf, s->s3->tmp.peer_finish_md, count);
 633                 }
 634         return ret;
 635         }
 636
 637
 638 int SSL_get_verify_mode(SSL *s)
 639         {
 640         return(s->verify_mode);
 641         }
 642
 643 int SSL_get_verify_depth(SSL *s)
 644         {
 645         return(s->verify_depth);
 646         }
 647
 648 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
 649         {
 650         return(s->verify_callback);
 651         }
 652
 653 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
 654         {
 655         return(ctx->verify_mode);
 656         }
 657
 658 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
 659         {
 660         return(ctx->verify_depth);
 661         }
 662
 663 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
 664         {
 665         return(ctx->default_verify_callback);
 666         }
 667
 668 void SSL_set_verify(SSL *s,int mode,
 669                     int (*callback)(int ok,X509_STORE_CTX *ctx))
 670         {
 671         s->verify_mode=mode;
 672         if (callback != NULL)
 673                 s->verify_callback=callback;
 674         }
 675
 676 void SSL_set_verify_depth(SSL *s,int depth)
 677         {
 678         s->verify_depth=depth;
 679         }
 680
 681 void SSL_set_read_ahead(SSL *s,int yes)
 682         {
 683         s->read_ahead=yes;
 684         }
 685
 686 int SSL_get_read_ahead(SSL *s)
 687         {
 688         return(s->read_ahead);
 689         }
 690
 691 int SSL_pending(SSL *s)
 692         {
 693         /* SSL_pending cannot work properly if read-ahead is enabled
 694          * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
 695          * and it is impossible to fix since SSL_pending cannot report
 696          * errors that may be observed while scanning the new data.
 697          * (Note that SSL_pending() is often used as a boolean value,
 698          * so we'd better not return -1.)
 699          */
 700         return(s->method->ssl_pending(s));
 701         }
 702
 703 X509 *SSL_get_peer_certificate(SSL *s)
 704         {
 705         X509 *r;
 706
 707         if ((s == NULL) || (s->session == NULL))
 708                 r=NULL;
 709         else
 710                 r=s->session->peer;
 711
 712         if (r == NULL) return(r);
 713
 714         CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
 715
 716         return(r);
 717         }
 718
 719 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
 720         {
 721         STACK_OF(X509) *r;
 722
 723         if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
 724                 r=NULL;
 725         else
 726                 r=s->session->sess_cert->cert_chain;
 727
 728         /* If we are a client, cert_chain includes the peer's own
 729          * certificate; if we are a server, it does not. */
 730
 731         return(r);
 732         }
 733
 734 /* Now in theory, since the calling process own 't' it should be safe to
 735  * modify.  We need to be able to read f without being hassled */
 736 void SSL_copy_session_id(SSL *t,SSL *f)
 737         {
 738         CERT *tmp;
 739
 740         /* Do we need to to SSL locking? */
 741         SSL_set_session(t,SSL_get_session(f));
 742
 743         /* what if we are setup as SSLv2 but want to talk SSLv3 or
 744          * vice-versa */
 745         if (t->method != f->method)
 746                 {
 747                 t->method->ssl_free(t); /* cleanup current */
 748                 t->method=f->method;    /* change method */
 749                 t->method->ssl_new(t);  /* setup new */
 750                 }
 751
 752         tmp=t->cert;
 753         if (f->cert != NULL)
 754                 {
 755                 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
 756                 t->cert=f->cert;
 757                 }
 758         else
 759                 t->cert=NULL;
 760         if (tmp != NULL) ssl_cert_free(tmp);
 761         SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
 762         }
 763
 764 /* Fix this so it checks all the valid key/cert options */
 765 int SSL_CTX_check_private_key(SSL_CTX *ctx)
 766         {
 767         if (    (ctx == NULL) ||
 768                 (ctx->cert == NULL) ||
 769                 (ctx->cert->key->x509 == NULL))
 770                 {
 771                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 772                 return(0);
 773                 }
 774         if      (ctx->cert->key->privatekey == NULL)
 775                 {
 776                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 777                 return(0);
 778                 }
 779         return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
 780         }
 781
 782 /* Fix this function so that it takes an optional type parameter */
 783 int SSL_check_private_key(SSL *ssl)
 784         {
 785         if (ssl == NULL)
 786                 {
 787                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
 788                 return(0);
 789                 }
 790         if (ssl->cert == NULL)
 791                 {
 792                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 793                 return 0;
 794                 }
 795         if (ssl->cert->key->x509 == NULL)
 796                 {
 797                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 798                 return(0);
 799                 }
 800         if (ssl->cert->key->privatekey == NULL)
 801                 {
 802                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 803                 return(0);
 804                 }
 805         return(X509_check_private_key(ssl->cert->key->x509,
 806                 ssl->cert->key->privatekey));
 807         }
 808
 809 int SSL_accept(SSL *s)
 810         {
 811         if (s->handshake_func == 0)
 812                 /* Not properly initialized yet */
 813                 SSL_set_accept_state(s);
 814
 815         return(s->method->ssl_accept(s));
 816         }
 817
 818 int SSL_connect(SSL *s)
 819         {
 820         if (s->handshake_func == 0)
 821                 /* Not properly initialized yet */
 822                 SSL_set_connect_state(s);
 823
 824         return(s->method->ssl_connect(s));
 825         }
 826
 827 long SSL_get_default_timeout(SSL *s)
 828         {
 829         return(s->method->get_timeout());
 830         }
 831
 832 int SSL_read(SSL *s,void *buf,int num)
 833         {
 834         if (s->handshake_func == 0)
 835                 {
 836                 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
 837                 return -1;
 838                 }
 839
 840         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 841                 {
 842                 s->rwstate=SSL_NOTHING;
 843                 return(0);
 844                 }
 845         return(s->method->ssl_read(s,buf,num));
 846         }
 847
 848 int SSL_peek(SSL *s,void *buf,int num)
 849         {
 850         if (s->handshake_func == 0)
 851                 {
 852                 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
 853                 return -1;
 854                 }
 855
 856         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 857                 {
 858                 return(0);
 859                 }
 860         return(s->method->ssl_peek(s,buf,num));
 861         }
 862
 863 int SSL_write(SSL *s,const void *buf,int num)
 864         {
 865         if (s->handshake_func == 0)
 866                 {
 867                 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
 868                 return -1;
 869                 }
 870
 871         if (s->shutdown & SSL_SENT_SHUTDOWN)
 872                 {
 873                 s->rwstate=SSL_NOTHING;
 874                 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
 875                 return(-1);
 876                 }
 877         return(s->method->ssl_write(s,buf,num));
 878         }
 879
 880 int SSL_shutdown(SSL *s)
 881         {
 882         /* Note that this function behaves differently from what one might
 883          * expect.  Return values are 0 for no success (yet),
 884          * 1 for success; but calling it once is usually not enough,
 885          * even if blocking I/O is used (see ssl3_shutdown).
 886          */
 887
 888         if (s->handshake_func == 0)
 889                 {
 890                 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
 891                 return -1;
 892                 }
 893
 894         if ((s != NULL) && !SSL_in_init(s))
 895                 return(s->method->ssl_shutdown(s));
 896         else
 897                 return(1);
 898         }
 899
 900 int SSL_renegotiate(SSL *s)
 901         {
 902         if (s->new_session == 0)
 903                 {
 904                 s->new_session=1;
 905                 }
 906         return(s->method->ssl_renegotiate(s));
 907         }
 908
 909 int SSL_renegotiate_pending(SSL *s)
 910         {
 911         /* becomes true when negotiation is requested;
 912          * false again once a handshake has finished */
 913         return (s->new_session != 0);
 914         }
 915
 916 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
 917         {
 918         long l;
 919
 920         switch (cmd)
 921                 {
 922         case SSL_CTRL_GET_READ_AHEAD:
 923                 return(s->read_ahead);
 924         case SSL_CTRL_SET_READ_AHEAD:
 925                 l=s->read_ahead;
 926                 s->read_ahead=larg;
 927                 return(l);
 928
 929         case SSL_CTRL_SET_MSG_CALLBACK_ARG:
 930                 s->msg_callback_arg = parg;
 931                 return 1;
 932
 933         case SSL_CTRL_OPTIONS:
 934                 return(s->options|=larg);
 935         case SSL_CTRL_MODE:
 936                 return(s->mode|=larg);
 937         case SSL_CTRL_GET_MAX_CERT_LIST:
 938                 return(s->max_cert_list);
 939         case SSL_CTRL_SET_MAX_CERT_LIST:
 940                 l=s->max_cert_list;
 941                 s->max_cert_list=larg;
 942                 return(l);
 943         default:
 944                 return(s->method->ssl_ctrl(s,cmd,larg,parg));
 945                 }
 946         }
 947
 948 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
 949         {
 950         switch(cmd)
 951                 {
 952         case SSL_CTRL_SET_MSG_CALLBACK:
 953                 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
 954                 return 1;
 955
 956         default:
 957                 return(s->method->ssl_callback_ctrl(s,cmd,fp));
 958                 }
 959         }
 960
 961 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
 962         {
 963         return ctx->sessions;
 964         }
 965
 966 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
 967         {
 968         long l;
 969
 970         switch (cmd)
 971                 {
 972         case SSL_CTRL_GET_READ_AHEAD:
 973                 return(ctx->read_ahead);
 974         case SSL_CTRL_SET_READ_AHEAD:
 975                 l=ctx->read_ahead;
 976                 ctx->read_ahead=larg;
 977                 return(l);
 978
 979         case SSL_CTRL_SET_MSG_CALLBACK_ARG:
 980                 ctx->msg_callback_arg = parg;
 981                 return 1;
 982
 983         case SSL_CTRL_GET_MAX_CERT_LIST:
 984                 return(ctx->max_cert_list);
 985         case SSL_CTRL_SET_MAX_CERT_LIST:
 986                 l=ctx->max_cert_list;
 987                 ctx->max_cert_list=larg;
 988                 return(l);
 989
 990         case SSL_CTRL_SET_SESS_CACHE_SIZE:
 991                 l=ctx->session_cache_size;
 992                 ctx->session_cache_size=larg;
 993                 return(l);
 994         case SSL_CTRL_GET_SESS_CACHE_SIZE:
 995                 return(ctx->session_cache_size);
 996         case SSL_CTRL_SET_SESS_CACHE_MODE:
 997                 l=ctx->session_cache_mode;
 998                 ctx->session_cache_mode=larg;
 999                 return(l);
1000         case SSL_CTRL_GET_SESS_CACHE_MODE:
1001                 return(ctx->session_cache_mode);
1002
1003         case SSL_CTRL_SESS_NUMBER:
1004                 return(ctx->sessions->num_items);
1005         case SSL_CTRL_SESS_CONNECT:
1006                 return(ctx->stats.sess_connect);
1007         case SSL_CTRL_SESS_CONNECT_GOOD:
1008                 return(ctx->stats.sess_connect_good);
1009         case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1010                 return(ctx->stats.sess_connect_renegotiate);
1011         case SSL_CTRL_SESS_ACCEPT:
1012                 return(ctx->stats.sess_accept);
1013         case SSL_CTRL_SESS_ACCEPT_GOOD:
1014                 return(ctx->stats.sess_accept_good);
1015         case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1016                 return(ctx->stats.sess_accept_renegotiate);
1017         case SSL_CTRL_SESS_HIT:
1018                 return(ctx->stats.sess_hit);
1019         case SSL_CTRL_SESS_CB_HIT:
1020                 return(ctx->stats.sess_cb_hit);
1021         case SSL_CTRL_SESS_MISSES:
1022                 return(ctx->stats.sess_miss);
1023         case SSL_CTRL_SESS_TIMEOUTS:
1024                 return(ctx->stats.sess_timeout);
1025         case SSL_CTRL_SESS_CACHE_FULL:
1026                 return(ctx->stats.sess_cache_full);
1027         case SSL_CTRL_OPTIONS:
1028                 return(ctx->options|=larg);
1029         case SSL_CTRL_MODE:
1030                 return(ctx->mode|=larg);
1031         default:
1032                 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1033                 }
1034         }
1035
1036 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
1037         {
1038         switch(cmd)
1039                 {
1040         case SSL_CTRL_SET_MSG_CALLBACK:
1041                 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1042                 return 1;
1043
1044         default:
1045                 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1046                 }
1047         }
1048
1049 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1050         {
1051         long l;
1052
1053         l=a->id-b->id;
1054         if (l == 0L)
1055                 return(0);
1056         else
1057                 return((l > 0)?1:-1);
1058         }
1059
1060 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1061                         const SSL_CIPHER * const *bp)
1062         {
1063         long l;
1064
1065         l=(*ap)->id-(*bp)->id;
1066         if (l == 0L)
1067                 return(0);
1068         else
1069                 return((l > 0)?1:-1);
1070         }
1071
1072 /** return a STACK of the ciphers available for the SSL and in order of
1073  * preference */
1074 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
1075         {
1076         if (s != NULL)
1077                 {
1078                 if (s->cipher_list != NULL)
1079                         {
1080                         return(s->cipher_list);
1081                         }
1082                 else if ((s->ctx != NULL) &&
1083                         (s->ctx->cipher_list != NULL))
1084                         {
1085                         return(s->ctx->cipher_list);
1086                         }
1087                 }
1088         return(NULL);
1089         }
1090
1091 /** return a STACK of the ciphers available for the SSL and in order of
1092  * algorithm id */
1093 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1094         {
1095         if (s != NULL)
1096                 {
1097                 if (s->cipher_list_by_id != NULL)
1098                         {
1099                         return(s->cipher_list_by_id);
1100                         }
1101                 else if ((s->ctx != NULL) &&
1102                         (s->ctx->cipher_list_by_id != NULL))
1103                         {
1104                         return(s->ctx->cipher_list_by_id);
1105                         }
1106                 }
1107         return(NULL);
1108         }
1109
1110 /** The old interface to get the same thing as SSL_get_ciphers() */
1111 const char *SSL_get_cipher_list(SSL *s,int n)
1112         {
1113         SSL_CIPHER *c;
1114         STACK_OF(SSL_CIPHER) *sk;
1115
1116         if (s == NULL) return(NULL);
1117         sk=SSL_get_ciphers(s);
1118         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1119                 return(NULL);
1120         c=sk_SSL_CIPHER_value(sk,n);
1121         if (c == NULL) return(NULL);
1122         return(c->name);
1123         }
1124
1125 /** specify the ciphers to be used by default by the SSL_CTX */
1126 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1127         {
1128         STACK_OF(SSL_CIPHER) *sk;
1129
1130         sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1131                 &ctx->cipher_list_by_id,str);
1132 /* XXXX */
1133         return((sk == NULL)?0:1);
1134         }
1135
1136 /** specify the ciphers to be used by the SSL */
1137 int SSL_set_cipher_list(SSL *s,const char *str)
1138         {
1139         STACK_OF(SSL_CIPHER) *sk;
1140
1141         sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1142                 &s->cipher_list_by_id,str);
1143 /* XXXX */
1144         return((sk == NULL)?0:1);
1145         }
1146
1147 /* works well for SSLv2, not so good for SSLv3 */
1148 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
1149         {
1150         char *p;
1151         const char *cp;
1152         STACK_OF(SSL_CIPHER) *sk;
1153         SSL_CIPHER *c;
1154         int i;
1155
1156         if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1157                 (len < 2))
1158                 return(NULL);
1159
1160         p=buf;
1161         sk=s->session->ciphers;
1162         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1163                 {
1164                 /* Decrement for either the ':' or a '\0' */
1165                 len--;
1166                 c=sk_SSL_CIPHER_value(sk,i);
1167                 for (cp=c->name; *cp; )
1168                         {
1169                         if (len-- == 0)
1170                                 {
1171                                 *p='\0';
1172                                 return(buf);
1173                                 }
1174                         else
1175                                 *(p++)= *(cp++);
1176                         }
1177                 *(p++)=':';
1178                 }
1179         p[-1]='\0';
1180         return(buf);
1181         }
1182
1183 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
1184         {
1185         int i,j=0;
1186         SSL_CIPHER *c;
1187         unsigned char *q;
1188 #ifndef OPENSSL_NO_KRB5
1189         int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1190 #endif /* OPENSSL_NO_KRB5 */
1191
1192         if (sk == NULL) return(0);
1193         q=p;
1194
1195         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1196                 {
1197                 c=sk_SSL_CIPHER_value(sk,i);
1198 #ifndef OPENSSL_NO_KRB5
1199                 if ((c->algorithms & SSL_KRB5) && nokrb5)
1200                     continue;
1201 #endif /* OPENSSL_NO_KRB5 */
1202                 j=ssl_put_cipher_by_char(s,c,p);
1203                 p+=j;
1204                 }
1205         return(p-q);
1206         }
1207
1208 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1209                                                STACK_OF(SSL_CIPHER) **skp)
1210         {
1211         SSL_CIPHER *c;
1212         STACK_OF(SSL_CIPHER) *sk;
1213         int i,n;
1214
1215         n=ssl_put_cipher_by_char(s,NULL,NULL);
1216         if ((num%n) != 0)
1217                 {
1218                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1219                 return(NULL);
1220                 }
1221         if ((skp == NULL) || (*skp == NULL))
1222                 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1223         else
1224                 {
1225                 sk= *skp;
1226                 sk_SSL_CIPHER_zero(sk);
1227                 }
1228
1229         for (i=0; i<num; i+=n)
1230                 {
1231                 c=ssl_get_cipher_by_char(s,p);
1232                 p+=n;
1233                 if (c != NULL)
1234                         {
1235                         if (!sk_SSL_CIPHER_push(sk,c))
1236                                 {
1237                                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1238                                 goto err;
1239                                 }
1240                         }
1241                 }
1242
1243         if (skp != NULL)
1244                 *skp=sk;
1245         return(sk);
1246 err:
1247         if ((skp == NULL) || (*skp == NULL))
1248                 sk_SSL_CIPHER_free(sk);
1249         return(NULL);
1250         }
1251
1252 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1253         {
1254         unsigned long l;
1255
1256         l=(unsigned long)
1257                 ((unsigned int) a->session_id[0]     )|
1258                 ((unsigned int) a->session_id[1]<< 8L)|
1259                 ((unsigned long)a->session_id[2]<<16L)|
1260                 ((unsigned long)a->session_id[3]<<24L);
1261         return(l);
1262         }
1263
1264 /* NB: If this function (or indeed the hash function which uses a sort of
1265  * coarser function than this one) is changed, ensure
1266  * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1267  * able to construct an SSL_SESSION that will collide with any existing session
1268  * with a matching session ID. */
1269 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1270         {
1271         if (a->ssl_version != b->ssl_version)
1272                 return(1);
1273         if (a->session_id_length != b->session_id_length)
1274                 return(1);
1275         return(memcmp(a->session_id,b->session_id,a->session_id_length));
1276         }
1277
1278 /* These wrapper functions should remain rather than redeclaring
1279  * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1280  * variable. The reason is that the functions aren't static, they're exposed via
1281  * ssl.h. */
1282 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1283 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1284
1285 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1286         {
1287         SSL_CTX *ret=NULL;
1288
1289         if (meth == NULL)
1290                 {
1291                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1292                 return(NULL);
1293                 }
1294
1295         if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1296                 {
1297                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1298                 goto err;
1299                 }
1300         ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1301         if (ret == NULL)
1302                 goto err;
1303
1304         memset(ret,0,sizeof(SSL_CTX));
1305
1306         ret->method=meth;
1307
1308         ret->cert_store=NULL;
1309         ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1310         ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1311         ret->session_cache_head=NULL;
1312         ret->session_cache_tail=NULL;
1313
1314         /* We take the system default */
1315         ret->session_timeout=meth->get_timeout();
1316
1317         ret->new_session_cb=0;
1318         ret->remove_session_cb=0;
1319         ret->get_session_cb=0;
1320         ret->generate_session_id=0;
1321
1322         memset((char *)&ret->stats,0,sizeof(ret->stats));
1323
1324         ret->references=1;
1325         ret->quiet_shutdown=0;
1326
1327 /*      ret->cipher=NULL;*/
1328 /*      ret->s2->challenge=NULL;
1329         ret->master_key=NULL;
1330         ret->key_arg=NULL;
1331         ret->s2->conn_id=NULL; */
1332
1333         ret->info_callback=NULL;
1334
1335         ret->app_verify_callback=0;
1336         ret->app_verify_arg=NULL;
1337
1338         ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1339         ret->read_ahead=0;
1340         ret->msg_callback=0;
1341         ret->msg_callback_arg=NULL;
1342         ret->verify_mode=SSL_VERIFY_NONE;
1343         ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1344         ret->sid_ctx_length=0;
1345         ret->default_verify_callback=NULL;
1346         if ((ret->cert=ssl_cert_new()) == NULL)
1347                 goto err;
1348
1349         ret->default_passwd_callback=0;
1350         ret->default_passwd_callback_userdata=NULL;
1351         ret->client_cert_cb=0;
1352
1353         ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1354                         LHASH_COMP_FN(SSL_SESSION_cmp));
1355         if (ret->sessions == NULL) goto err;
1356         ret->cert_store=X509_STORE_new();
1357         if (ret->cert_store == NULL) goto err;
1358
1359         ssl_create_cipher_list(ret->method,
1360                 &ret->cipher_list,&ret->cipher_list_by_id,
1361                 SSL_DEFAULT_CIPHER_LIST);
1362         if (ret->cipher_list == NULL
1363             || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1364                 {
1365                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1366                 goto err2;
1367                 }
1368
1369         if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1370                 {
1371                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1372                 goto err2;
1373                 }
1374         if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1375                 {
1376                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1377                 goto err2;
1378                 }
1379         if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1380                 {
1381                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1382                 goto err2;
1383                 }
1384
1385         if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1386                 goto err;
1387
1388         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1389
1390         ret->extra_certs=NULL;
1391         ret->comp_methods=SSL_COMP_get_compression_methods();
1392
1393         return(ret);
1394 err:
1395         SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1396 err2:
1397         if (ret != NULL) SSL_CTX_free(ret);
1398         return(NULL);
1399         }
1400
1401 #if 0
1402 static void SSL_COMP_free(SSL_COMP *comp)
1403     { OPENSSL_free(comp); }
1404 #endif
1405
1406 void SSL_CTX_free(SSL_CTX *a)
1407         {
1408         int i;
1409
1410         if (a == NULL) return;
1411
1412         i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1413 #ifdef REF_PRINT
1414         REF_PRINT("SSL_CTX",a);
1415 #endif
1416         if (i > 0) return;
1417 #ifdef REF_CHECK
1418         if (i < 0)
1419                 {
1420                 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1421                 abort(); /* ok */
1422                 }
1423 #endif
1424
1425         /*
1426          * Free internal session cache. However: the remove_cb() may reference
1427          * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1428          * after the sessions were flushed.
1429          * As the ex_data handling routines might also touch the session cache,
1430          * the most secure solution seems to be: empty (flush) the cache, then
1431          * free ex_data, then finally free the cache.
1432          * (See ticket [openssl.org #212].)
1433          */
1434         if (a->sessions != NULL)
1435                 SSL_CTX_flush_sessions(a,0);
1436
1437         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1438
1439         if (a->sessions != NULL)
1440                 lh_free(a->sessions);
1441
1442         if (a->cert_store != NULL)
1443                 X509_STORE_free(a->cert_store);
1444         if (a->cipher_list != NULL)
1445                 sk_SSL_CIPHER_free(a->cipher_list);
1446         if (a->cipher_list_by_id != NULL)
1447                 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1448         if (a->cert != NULL)
1449                 ssl_cert_free(a->cert);
1450         if (a->client_CA != NULL)
1451                 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1452         if (a->extra_certs != NULL)
1453                 sk_X509_pop_free(a->extra_certs,X509_free);
1454 #if 0 /* This should never be done, since it removes a global database */
1455         if (a->comp_methods != NULL)
1456                 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1457 #else
1458         a->comp_methods = NULL;
1459 #endif
1460         OPENSSL_free(a);
1461         }
1462
1463 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1464         {
1465         ctx->default_passwd_callback=cb;
1466         }
1467
1468 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1469         {
1470         ctx->default_passwd_callback_userdata=u;
1471         }
1472
1473 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1474         {
1475         ctx->app_verify_callback=cb;
1476         ctx->app_verify_arg=arg;
1477         }
1478
1479 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1480         {
1481         ctx->verify_mode=mode;
1482         ctx->default_verify_callback=cb;
1483         }
1484
1485 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1486         {
1487         ctx->verify_depth=depth;
1488         }
1489
1490 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1491         {
1492         CERT_PKEY *cpk;
1493         int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1494         int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1495         int rsa_tmp_export,dh_tmp_export,kl;
1496         unsigned long mask,emask;
1497         int have_ecc_cert, have_ecdh_tmp, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1498         X509 *x = NULL;
1499         EVP_PKEY *ecc_pkey = NULL;
1500         int signature_nid = 0;
1501
1502         if (c == NULL) return;
1503
1504         kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1505
1506 #ifndef OPENSSL_NO_RSA
1507         rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1508         rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1509                 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1510 #else
1511         rsa_tmp=rsa_tmp_export=0;
1512 #endif
1513 #ifndef OPENSSL_NO_DH
1514         dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1515         dh_tmp_export=(c->dh_tmp_cb != NULL ||
1516                 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1517 #else
1518         dh_tmp=dh_tmp_export=0;
1519 #endif
1520
1521 #ifndef OPENSSL_NO_ECDH
1522         have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1523 #endif
1524         cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1525         rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1526         rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1527         cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1528         rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1529         cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1530         dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1531         cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1532         dh_rsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
1533         dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1534         cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1535 /* FIX THIS EAY EAY EAY */
1536         dh_dsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
1537         dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1538         cpk= &(c->pkeys[SSL_PKEY_ECC]);
1539         have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1540         mask=0;
1541         emask=0;
1542
1543 #ifdef CIPHER_DEBUG
1544         printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1545                 rsa_tmp,rsa_tmp_export,dh_tmp,
1546                 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1547 #endif
1548
1549         if (rsa_enc || (rsa_tmp && rsa_sign))
1550                 mask|=SSL_kRSA;
1551         if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1552                 emask|=SSL_kRSA;
1553
1554 #if 0
1555         /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1556         if (    (dh_tmp || dh_rsa || dh_dsa) &&
1557                 (rsa_enc || rsa_sign || dsa_sign))
1558                 mask|=SSL_kEDH;
1559         if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1560                 (rsa_enc || rsa_sign || dsa_sign))
1561                 emask|=SSL_kEDH;
1562 #endif
1563
1564         if (dh_tmp_export)
1565                 emask|=SSL_kEDH;
1566
1567         if (dh_tmp)
1568                 mask|=SSL_kEDH;
1569
1570         if (dh_rsa) mask|=SSL_kDHr;
1571         if (dh_rsa_export) emask|=SSL_kDHr;
1572
1573         if (dh_dsa) mask|=SSL_kDHd;
1574         if (dh_dsa_export) emask|=SSL_kDHd;
1575
1576         if (rsa_enc || rsa_sign)
1577                 {
1578                 mask|=SSL_aRSA;
1579                 mask|=SSL_aRSA;
1580                 }
1581
1582         if (dsa_sign)
1583                 {
1584                 mask|=SSL_aDSS;
1585                 emask|=SSL_aDSS;
1586                 }
1587
1588         mask|=SSL_aNULL;
1589         emask|=SSL_aNULL;
1590
1591 #ifndef OPENSSL_NO_KRB5
1592         mask|=SSL_kKRB5|SSL_aKRB5;
1593         emask|=SSL_kKRB5|SSL_aKRB5;
1594 #endif
1595
1596         /* An ECC certificate may be usable for ECDH and/or
1597          * ECDSA cipher suites depending on the key usage extension.
1598          */
1599         if (have_ecc_cert)
1600                 {
1601                 /* This call populates extension flags (ex_flags) */
1602                 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1603                 X509_check_purpose(x, -1, 0);
1604                 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1605                     (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1606                 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1607                     (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1608                 ecc_pkey = X509_get_pubkey(x);
1609                 ecc_pkey_size = (ecc_pkey != NULL) ?
1610                     EVP_PKEY_bits(ecc_pkey) : 0;
1611                 EVP_PKEY_free(ecc_pkey);
1612                 if ((x->sig_alg) && (x->sig_alg->algorithm))
1613                         signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1614 #ifndef OPENSSL_NO_ECDH
1615                 if (ecdh_ok)
1616                         {
1617                         if ((signature_nid == NID_md5WithRSAEncryption) ||
1618                             (signature_nid == NID_md4WithRSAEncryption) ||
1619                             (signature_nid == NID_md2WithRSAEncryption))
1620                                 {
1621                                 mask|=SSL_kECDH|SSL_aRSA;
1622                                 if (ecc_pkey_size <= 163)
1623                                         emask|=SSL_kECDH|SSL_aRSA;
1624                                 }
1625                         if (signature_nid == NID_ecdsa_with_SHA1)
1626                                 {
1627                                 mask|=SSL_kECDH|SSL_aECDSA;
1628                                 if (ecc_pkey_size <= 163)
1629                                         emask|=SSL_kECDH|SSL_aECDSA;
1630                                 }
1631                         }
1632 #endif
1633 #ifndef OPENSSL_NO_ECDSA
1634                 if (ecdsa_ok)
1635                         {
1636                         mask|=SSL_aECDSA;
1637                         emask|=SSL_aECDSA;
1638                         }
1639 #endif
1640                 }
1641
1642 #ifndef OPENSSL_NO_ECDH
1643         if (have_ecdh_tmp)
1644                 {
1645                 mask|=SSL_kECDHE;
1646                 emask|=SSL_kECDHE;
1647                 }
1648 #endif
1649         c->mask=mask;
1650         c->export_mask=emask;
1651         c->valid=1;
1652         }
1653
1654 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
1655 #define ku_reject(x, usage) \
1656         (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
1657
1658 int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs)
1659         {
1660         unsigned long alg = cs->algorithms;
1661         EVP_PKEY *pkey = NULL;
1662         int keysize = 0;
1663         int signature_nid = 0;
1664
1665         if (SSL_C_IS_EXPORT(cs))
1666                 {
1667                 /* ECDH key length in export ciphers must be <= 163 bits */
1668                 pkey = X509_get_pubkey(x);
1669                 if (pkey == NULL) return 0;
1670                 keysize = EVP_PKEY_bits(pkey);
1671                 EVP_PKEY_free(pkey);
1672                 if (keysize > 163) return 0;
1673                 }
1674
1675         /* This call populates the ex_flags field correctly */
1676         X509_check_purpose(x, -1, 0);
1677         if ((x->sig_alg) && (x->sig_alg->algorithm))
1678                 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1679         if (alg & SSL_kECDH)
1680                 {
1681                 /* key usage, if present, must allow key agreement */
1682                 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
1683                         {
1684                         return 0;
1685                         }
1686                 if (alg & SSL_aECDSA)
1687                         {
1688                         /* signature alg must be ECDSA */
1689                         if (signature_nid != NID_ecdsa_with_SHA1)
1690                                 {
1691                                 return 0;
1692                                 }
1693                         }
1694                 if (alg & SSL_aRSA)
1695                         {
1696                         /* signature alg must be RSA */
1697                         if ((signature_nid != NID_md5WithRSAEncryption) &&
1698                             (signature_nid != NID_md4WithRSAEncryption) &&
1699                             (signature_nid != NID_md2WithRSAEncryption))
1700                                 {
1701                                 return 0;
1702                                 }
1703                         }
1704                 }
1705         else if (alg & SSL_aECDSA)
1706                 {
1707                 /* key usage, if present, must allow signing */
1708                 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
1709                         {
1710                         return 0;
1711                         }
1712                 }
1713
1714         return 1;  /* all checks are ok */
1715         }
1716
1717 /* THIS NEEDS CLEANING UP */
1718 X509 *ssl_get_server_send_cert(SSL *s)
1719         {
1720         unsigned long alg,mask,kalg;
1721         CERT *c;
1722         int i,is_export;
1723
1724         c=s->cert;
1725         ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1726         alg=s->s3->tmp.new_cipher->algorithms;
1727         is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1728         mask=is_export?c->export_mask:c->mask;
1729         kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1730
1731         if (kalg & SSL_kECDH)
1732                 {
1733                 /* we don't need to look at SSL_kECDHE
1734                  * since no certificate is needed for
1735                  * anon ECDH and for authenticated
1736                  * ECDHE, the check for the auth
1737                  * algorithm will set i correctly
1738                  * NOTE: For ECDH-RSA, we need an ECC
1739                  * not an RSA cert but for ECDHE-RSA
1740                  * we need an RSA cert. Placing the
1741                  * checks for SSL_kECDH before RSA
1742                  * checks ensures the correct cert is chosen.
1743                  */
1744                 i=SSL_PKEY_ECC;
1745                 }
1746         else if (kalg & SSL_aECDSA)
1747                 {
1748                 i=SSL_PKEY_ECC;
1749                 }
1750         else if (kalg & SSL_kDHr)
1751                 i=SSL_PKEY_DH_RSA;
1752         else if (kalg & SSL_kDHd)
1753                 i=SSL_PKEY_DH_DSA;
1754         else if (kalg & SSL_aDSS)
1755                 i=SSL_PKEY_DSA_SIGN;
1756         else if (kalg & SSL_aRSA)
1757                 {
1758                 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1759                         i=SSL_PKEY_RSA_SIGN;
1760                 else
1761                         i=SSL_PKEY_RSA_ENC;
1762                 }
1763         else if (kalg & SSL_aKRB5)
1764                 {
1765                 /* VRS something else here? */
1766                 return(NULL);
1767                 }
1768         else /* if (kalg & SSL_aNULL) */
1769                 {
1770                 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1771                 return(NULL);
1772                 }
1773         if (c->pkeys[i].x509 == NULL) return(NULL);
1774
1775         return(c->pkeys[i].x509);
1776         }
1777
1778 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1779         {
1780         unsigned long alg;
1781         CERT *c;
1782
1783         alg=cipher->algorithms;
1784         c=s->cert;
1785
1786         if ((alg & SSL_aDSS) &&
1787                 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1788                 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1789         else if (alg & SSL_aRSA)
1790                 {
1791                 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1792                         return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1793                 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1794                         return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1795                 else
1796                         return(NULL);
1797                 }
1798         else if ((alg & SSL_aECDSA) &&
1799                  (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
1800                 return(c->pkeys[SSL_PKEY_ECC].privatekey);
1801         else /* if (alg & SSL_aNULL) */
1802                 {
1803                 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
1804                 return(NULL);
1805                 }
1806         }
1807
1808 void ssl_update_cache(SSL *s,int mode)
1809         {
1810         int i;
1811
1812         /* If the session_id_length is 0, we are not supposed to cache it,
1813          * and it would be rather hard to do anyway :-) */
1814         if (s->session->session_id_length == 0) return;
1815
1816         i=s->ctx->session_cache_mode;
1817         if ((i & mode) && (!s->hit)
1818                 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
1819                     || SSL_CTX_add_session(s->ctx,s->session))
1820                 && (s->ctx->new_session_cb != NULL))
1821                 {
1822                 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1823                 if (!s->ctx->new_session_cb(s,s->session))
1824                         SSL_SESSION_free(s->session);
1825                 }
1826
1827         /* auto flush every 255 connections */
1828         if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1829                 ((i & mode) == mode))
1830                 {
1831                 if (  (((mode & SSL_SESS_CACHE_CLIENT)
1832                         ?s->ctx->stats.sess_connect_good
1833                         :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1834                         {
1835                         SSL_CTX_flush_sessions(s->ctx,time(NULL));
1836                         }
1837                 }
1838         }
1839
1840 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1841         {
1842         return(s->method);
1843         }
1844
1845 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1846         {
1847         int conn= -1;
1848         int ret=1;
1849
1850         if (s->method != meth)
1851                 {
1852                 if (s->handshake_func != NULL)
1853                         conn=(s->handshake_func == s->method->ssl_connect);
1854
1855                 if (s->method->version == meth->version)
1856                         s->method=meth;
1857                 else
1858                         {
1859                         s->method->ssl_free(s);
1860                         s->method=meth;
1861                         ret=s->method->ssl_new(s);
1862                         }
1863
1864                 if (conn == 1)
1865                         s->handshake_func=meth->ssl_connect;
1866                 else if (conn == 0)
1867                         s->handshake_func=meth->ssl_accept;
1868                 }
1869         return(ret);
1870         }
1871
1872 int SSL_get_error(SSL *s,int i)
1873         {
1874         int reason;
1875         unsigned long l;
1876         BIO *bio;
1877
1878         if (i > 0) return(SSL_ERROR_NONE);
1879
1880         /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1881          * etc, where we do encode the error */
1882         if ((l=ERR_peek_error()) != 0)
1883                 {
1884                 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1885                         return(SSL_ERROR_SYSCALL);
1886                 else
1887                         return(SSL_ERROR_SSL);
1888                 }
1889
1890         if ((i < 0) && SSL_want_read(s))
1891                 {
1892                 bio=SSL_get_rbio(s);
1893                 if (BIO_should_read(bio))
1894                         return(SSL_ERROR_WANT_READ);
1895                 else if (BIO_should_write(bio))
1896                         /* This one doesn't make too much sense ... We never try
1897                          * to write to the rbio, and an application program where
1898                          * rbio and wbio are separate couldn't even know what it
1899                          * should wait for.
1900                          * However if we ever set s->rwstate incorrectly
1901                          * (so that we have SSL_want_read(s) instead of
1902                          * SSL_want_write(s)) and rbio and wbio *are* the same,
1903                          * this test works around that bug; so it might be safer
1904                          * to keep it. */
1905                         return(SSL_ERROR_WANT_WRITE);
1906                 else if (BIO_should_io_special(bio))
1907                         {
1908                         reason=BIO_get_retry_reason(bio);
1909                         if (reason == BIO_RR_CONNECT)
1910                                 return(SSL_ERROR_WANT_CONNECT);
1911                         else if (reason == BIO_RR_ACCEPT)
1912                                 return(SSL_ERROR_WANT_ACCEPT);
1913                         else
1914                                 return(SSL_ERROR_SYSCALL); /* unknown */
1915                         }
1916                 }
1917
1918         if ((i < 0) && SSL_want_write(s))
1919                 {
1920                 bio=SSL_get_wbio(s);
1921                 if (BIO_should_write(bio))
1922                         return(SSL_ERROR_WANT_WRITE);
1923                 else if (BIO_should_read(bio))
1924                         /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1925                         return(SSL_ERROR_WANT_READ);
1926                 else if (BIO_should_io_special(bio))
1927                         {
1928                         reason=BIO_get_retry_reason(bio);
1929                         if (reason == BIO_RR_CONNECT)
1930                                 return(SSL_ERROR_WANT_CONNECT);
1931                         else if (reason == BIO_RR_ACCEPT)
1932                                 return(SSL_ERROR_WANT_ACCEPT);
1933                         else
1934                                 return(SSL_ERROR_SYSCALL);
1935                         }
1936                 }
1937         if ((i < 0) && SSL_want_x509_lookup(s))
1938                 {
1939                 return(SSL_ERROR_WANT_X509_LOOKUP);
1940                 }
1941
1942         if (i == 0)
1943                 {
1944                 if (s->version == SSL2_VERSION)
1945                         {
1946                         /* assume it is the socket being closed */
1947                         return(SSL_ERROR_ZERO_RETURN);
1948                         }
1949                 else
1950                         {
1951                         if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1952                                 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1953                                 return(SSL_ERROR_ZERO_RETURN);
1954                         }
1955                 }
1956         return(SSL_ERROR_SYSCALL);
1957         }
1958
1959 int SSL_do_handshake(SSL *s)
1960         {
1961         int ret=1;
1962
1963         if (s->handshake_func == NULL)
1964                 {
1965                 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1966                 return(-1);
1967                 }
1968
1969         s->method->ssl_renegotiate_check(s);
1970
1971         if (SSL_in_init(s) || SSL_in_before(s))
1972                 {
1973                 ret=s->handshake_func(s);
1974                 }
1975         return(ret);
1976         }
1977
1978 /* For the next 2 functions, SSL_clear() sets shutdown and so
1979  * one of these calls will reset it */
1980 void SSL_set_accept_state(SSL *s)
1981         {
1982         s->server=1;
1983         s->shutdown=0;
1984         s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1985         s->handshake_func=s->method->ssl_accept;
1986         /* clear the current cipher */
1987         ssl_clear_cipher_ctx(s);
1988         }
1989
1990 void SSL_set_connect_state(SSL *s)
1991         {
1992         s->server=0;
1993         s->shutdown=0;
1994         s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1995         s->handshake_func=s->method->ssl_connect;
1996         /* clear the current cipher */
1997         ssl_clear_cipher_ctx(s);
1998         }
1999
2000 int ssl_undefined_function(SSL *s)
2001         {
2002         SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2003         return(0);
2004         }
2005
2006 SSL_METHOD *ssl_bad_method(int ver)
2007         {
2008         SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2009         return(NULL);
2010         }
2011
2012 const char *SSL_get_version(SSL *s)
2013         {
2014         if (s->version == TLS1_VERSION)
2015                 return("TLSv1");
2016         else if (s->version == SSL3_VERSION)
2017                 return("SSLv3");
2018         else if (s->version == SSL2_VERSION)
2019                 return("SSLv2");
2020         else
2021                 return("unknown");
2022         }
2023
2024 SSL *SSL_dup(SSL *s)
2025         {
2026         STACK_OF(X509_NAME) *sk;
2027         X509_NAME *xn;
2028         SSL *ret;
2029         int i;
2030
2031         if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2032             return(NULL);
2033
2034         ret->version = s->version;
2035         ret->type = s->type;
2036         ret->method = s->method;
2037
2038         if (s->session != NULL)
2039                 {
2040                 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2041                 SSL_copy_session_id(ret,s);
2042                 }
2043         else
2044                 {
2045                 /* No session has been established yet, so we have to expect
2046                  * that s->cert or ret->cert will be changed later --
2047                  * they should not both point to the same object,
2048                  * and thus we can't use SSL_copy_session_id. */
2049
2050                 ret->method->ssl_free(ret);
2051                 ret->method = s->method;
2052                 ret->method->ssl_new(ret);
2053
2054                 if (s->cert != NULL)
2055                         {
2056                         if (ret->cert != NULL)
2057                                 {
2058                                 ssl_cert_free(ret->cert);
2059                                 }
2060                         ret->cert = ssl_cert_dup(s->cert);
2061                         if (ret->cert == NULL)
2062                                 goto err;
2063                         }
2064
2065                 SSL_set_session_id_context(ret,
2066                         s->sid_ctx, s->sid_ctx_length);
2067                 }
2068
2069         ret->options=s->options;
2070         ret->mode=s->mode;
2071         SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2072         SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2073         ret->msg_callback = s->msg_callback;
2074         ret->msg_callback_arg = s->msg_callback_arg;
2075         SSL_set_verify(ret,SSL_get_verify_mode(s),
2076                 SSL_get_verify_callback(s));
2077         SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2078         ret->generate_session_id = s->generate_session_id;
2079
2080         SSL_set_info_callback(ret,SSL_get_info_callback(s));
2081
2082         ret->debug=s->debug;
2083
2084         /* copy app data, a little dangerous perhaps */
2085         if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2086                 goto err;
2087
2088         /* setup rbio, and wbio */
2089         if (s->rbio != NULL)
2090                 {
2091                 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2092                         goto err;
2093                 }
2094         if (s->wbio != NULL)
2095                 {
2096                 if (s->wbio != s->rbio)
2097                         {
2098                         if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2099                                 goto err;
2100                         }
2101                 else
2102                         ret->wbio=ret->rbio;
2103                 }
2104         ret->rwstate = s->rwstate;
2105         ret->in_handshake = s->in_handshake;
2106         ret->handshake_func = s->handshake_func;
2107         ret->server = s->server;
2108         ret->new_session = s->new_session;
2109         ret->quiet_shutdown = s->quiet_shutdown;
2110         ret->shutdown=s->shutdown;
2111         ret->state=s->state; /* SSL_dup does not really work at any state, though */
2112         ret->rstate=s->rstate;
2113         ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2114         ret->hit=s->hit;
2115         ret->purpose=s->purpose;
2116         ret->trust=s->trust;
2117
2118         /* dup the cipher_list and cipher_list_by_id stacks */
2119         if (s->cipher_list != NULL)
2120                 {
2121                 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2122                         goto err;
2123                 }
2124         if (s->cipher_list_by_id != NULL)
2125                 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2126                         == NULL)
2127                         goto err;
2128
2129         /* Dup the client_CA list */
2130         if (s->client_CA != NULL)
2131                 {
2132                 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2133                 ret->client_CA=sk;
2134                 for (i=0; i<sk_X509_NAME_num(sk); i++)
2135                         {
2136                         xn=sk_X509_NAME_value(sk,i);
2137                         if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2138                                 {
2139                                 X509_NAME_free(xn);
2140                                 goto err;
2141                                 }
2142                         }
2143                 }
2144
2145         if (0)
2146                 {
2147 err:
2148                 if (ret != NULL) SSL_free(ret);
2149                 ret=NULL;
2150                 }
2151         return(ret);
2152         }
2153
2154 void ssl_clear_cipher_ctx(SSL *s)
2155         {
2156         if (s->enc_read_ctx != NULL)
2157                 {
2158                 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2159                 OPENSSL_free(s->enc_read_ctx);
2160                 s->enc_read_ctx=NULL;
2161                 }
2162         if (s->enc_write_ctx != NULL)
2163                 {
2164                 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2165                 OPENSSL_free(s->enc_write_ctx);
2166                 s->enc_write_ctx=NULL;
2167                 }
2168         if (s->expand != NULL)
2169                 {
2170                 COMP_CTX_free(s->expand);
2171                 s->expand=NULL;
2172                 }
2173         if (s->compress != NULL)
2174                 {
2175                 COMP_CTX_free(s->compress);
2176                 s->compress=NULL;
2177                 }
2178         }
2179
2180 /* Fix this function so that it takes an optional type parameter */
2181 X509 *SSL_get_certificate(SSL *s)
2182         {
2183         if (s->cert != NULL)
2184                 return(s->cert->key->x509);
2185         else
2186                 return(NULL);
2187         }
2188
2189 /* Fix this function so that it takes an optional type parameter */
2190 EVP_PKEY *SSL_get_privatekey(SSL *s)
2191         {
2192         if (s->cert != NULL)
2193                 return(s->cert->key->privatekey);
2194         else
2195                 return(NULL);
2196         }
2197
2198 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
2199         {
2200         if ((s->session != NULL) && (s->session->cipher != NULL))
2201                 return(s->session->cipher);
2202         return(NULL);
2203         }
2204
2205 int ssl_init_wbio_buffer(SSL *s,int push)
2206         {
2207         BIO *bbio;
2208
2209         if (s->bbio == NULL)
2210                 {
2211                 bbio=BIO_new(BIO_f_buffer());
2212                 if (bbio == NULL) return(0);
2213                 s->bbio=bbio;
2214                 }
2215         else
2216                 {
2217                 bbio=s->bbio;
2218                 if (s->bbio == s->wbio)
2219                         s->wbio=BIO_pop(s->wbio);
2220                 }
2221         (void)BIO_reset(bbio);
2222 /*      if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2223         if (!BIO_set_read_buffer_size(bbio,1))
2224                 {
2225                 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2226                 return(0);
2227                 }
2228         if (push)
2229                 {
2230                 if (s->wbio != bbio)
2231                         s->wbio=BIO_push(bbio,s->wbio);
2232                 }
2233         else
2234                 {
2235                 if (s->wbio == bbio)
2236                         s->wbio=BIO_pop(bbio);
2237                 }
2238         return(1);
2239         }
2240
2241 void ssl_free_wbio_buffer(SSL *s)
2242         {
2243         if (s->bbio == NULL) return;
2244
2245         if (s->bbio == s->wbio)
2246                 {
2247                 /* remove buffering */
2248                 s->wbio=BIO_pop(s->wbio);
2249 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2250                 assert(s->wbio != NULL);
2251 #endif
2252         }
2253         BIO_free(s->bbio);
2254         s->bbio=NULL;
2255         }
2256
2257 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2258         {
2259         ctx->quiet_shutdown=mode;
2260         }
2261
2262 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
2263         {
2264         return(ctx->quiet_shutdown);
2265         }
2266
2267 void SSL_set_quiet_shutdown(SSL *s,int mode)
2268         {
2269         s->quiet_shutdown=mode;
2270         }
2271
2272 int SSL_get_quiet_shutdown(SSL *s)
2273         {
2274         return(s->quiet_shutdown);
2275         }
2276
2277 void SSL_set_shutdown(SSL *s,int mode)
2278         {
2279         s->shutdown=mode;
2280         }
2281
2282 int SSL_get_shutdown(SSL *s)
2283         {
2284         return(s->shutdown);
2285         }
2286
2287 int SSL_version(SSL *s)
2288         {
2289         return(s->version);
2290         }
2291
2292 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
2293         {
2294         return(ssl->ctx);
2295         }
2296
2297 #ifndef OPENSSL_NO_STDIO
2298 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2299         {
2300         return(X509_STORE_set_default_paths(ctx->cert_store));
2301         }
2302
2303 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2304                 const char *CApath)
2305         {
2306         return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2307         }
2308 #endif
2309
2310 void SSL_set_info_callback(SSL *ssl,
2311                            void (*cb)(const SSL *ssl,int type,int val))
2312         {
2313         ssl->info_callback=cb;
2314         }
2315
2316 void (*SSL_get_info_callback(SSL *ssl))(const SSL *ssl,int type,int val)
2317         {
2318         return ssl->info_callback;
2319         }
2320
2321 int SSL_state(SSL *ssl)
2322         {
2323         return(ssl->state);
2324         }
2325
2326 void SSL_set_verify_result(SSL *ssl,long arg)
2327         {
2328         ssl->verify_result=arg;
2329         }
2330
2331 long SSL_get_verify_result(SSL *ssl)
2332         {
2333         return(ssl->verify_result);
2334         }
2335
2336 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2337                          CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2338         {
2339         return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2340                                 new_func, dup_func, free_func);
2341         }
2342
2343 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2344         {
2345         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2346         }
2347
2348 void *SSL_get_ex_data(SSL *s,int idx)
2349         {
2350         return(CRYPTO_get_ex_data(&s->ex_data,idx));
2351         }
2352
2353 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2354                              CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2355         {
2356         return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2357                                 new_func, dup_func, free_func);
2358         }
2359
2360 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2361         {
2362         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2363         }
2364
2365 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
2366         {
2367         return(CRYPTO_get_ex_data(&s->ex_data,idx));
2368         }
2369
2370 int ssl_ok(SSL *s)
2371         {
2372         return(1);
2373         }
2374
2375 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
2376         {
2377         return(ctx->cert_store);
2378         }
2379
2380 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2381         {
2382         if (ctx->cert_store != NULL)
2383                 X509_STORE_free(ctx->cert_store);
2384         ctx->cert_store=store;
2385         }
2386
2387 int SSL_want(SSL *s)
2388         {
2389         return(s->rwstate);
2390         }
2391
2392 /*!
2393  * \brief Set the callback for generating temporary RSA keys.
2394  * \param ctx the SSL context.
2395  * \param cb the callback
2396  */
2397
2398 #ifndef OPENSSL_NO_RSA
2399 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2400                                                           int is_export,
2401                                                           int keylength))
2402     {
2403     SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2404     }
2405
2406 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2407                                                   int is_export,
2408                                                   int keylength))
2409     {
2410     SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2411     }
2412 #endif
2413
2414 #ifdef DOXYGEN
2415 /*!
2416  * \brief The RSA temporary key callback function.
2417  * \param ssl the SSL session.
2418  * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2419  * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2420  * of the required key in bits.
2421  * \return the temporary RSA key.
2422  * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2423  */
2424
2425 RSA *cb(SSL *ssl,int is_export,int keylength)
2426     {}
2427 #endif
2428
2429 /*!
2430  * \brief Set the callback for generating temporary DH keys.
2431  * \param ctx the SSL context.
2432  * \param dh the callback
2433  */
2434
2435 #ifndef OPENSSL_NO_DH
2436 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2437                                                         int keylength))
2438         {
2439         SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2440         }
2441
2442 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2443                                                 int keylength))
2444         {
2445         SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2446         }
2447 #endif
2448
2449 #ifndef OPENSSL_NO_ECDH
2450 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2451                                                         int keylength))
2452         {
2453         SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)())ecdh);
2454         }
2455
2456 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2457                                                 int keylength))
2458         {
2459         SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)())ecdh);
2460         }
2461 #endif
2462
2463
2464 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))
2465         {
2466         SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
2467         }
2468 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))
2469         {
2470         SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
2471         }
2472
2473
2474
2475 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2476 #include "../crypto/bio/bss_file.c"
2477 #endif
2478
2479 IMPLEMENT_STACK_OF(SSL_CIPHER)
2480 IMPLEMENT_STACK_OF(SSL_COMP)