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) 1998-2007 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  * Copyright 2005 Nokia. All rights reserved.
 120  *
 121  * The portions of the attached software ("Contribution") is developed by
 122  * Nokia Corporation and is licensed pursuant to the OpenSSL open source
 123  * license.
 124  *
 125  * The Contribution, originally written by Mika Kousa and Pasi Eronen of
 126  * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
 127  * support (see RFC 4279) to OpenSSL.
 128  *
 129  * No patent licenses or other rights except those expressly stated in
 130  * the OpenSSL open source license shall be deemed granted or received
 131  * expressly, by implication, estoppel, or otherwise.
 132  *
 133  * No assurances are provided by Nokia that the Contribution does not
 134  * infringe the patent or other intellectual property rights of any third
 135  * party or that the license provides you with all the necessary rights
 136  * to make use of the Contribution.
 137  *
 138  * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
 139  * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
 140  * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
 141  * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
 142  * OTHERWISE.
 143  */
 144
 145 #ifdef REF_CHECK
 146 #  include <assert.h>
 147 #endif
 148 #include <stdio.h>
 149 #include "ssl_locl.h"
 150 #include "kssl_lcl.h"
 151 #include <openssl/objects.h>
 152 #include <openssl/lhash.h>
 153 #include <openssl/x509v3.h>
 154 #include <openssl/rand.h>
 155 #include <openssl/ocsp.h>
 156 #ifndef OPENSSL_NO_DH
 157 #include <openssl/dh.h>
 158 #endif
 159 #ifndef OPENSSL_NO_ENGINE
 160 #include <openssl/engine.h>
 161 #endif
 162
 163 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
 164
 165 SSL3_ENC_METHOD ssl3_undef_enc_method={
 166         /* evil casts, but these functions are only called if there's a library bug */
 167         (int (*)(SSL *,int))ssl_undefined_function,
 168         (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
 169         ssl_undefined_function,
 170         (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
 171         (int (*)(SSL*, int))ssl_undefined_function,
 172         (int (*)(SSL *,  const char*, int, unsigned char *))ssl_undefined_function,
 173         0,      /* finish_mac_length */
 174         (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
 175         NULL,   /* client_finished_label */
 176         0,      /* client_finished_label_len */
 177         NULL,   /* server_finished_label */
 178         0,      /* server_finished_label_len */
 179         (int (*)(int))ssl_undefined_function,
 180         (int (*)(SSL *, unsigned char *, size_t, const char *,
 181                  size_t, const unsigned char *, size_t,
 182                  int use_context)) ssl_undefined_function,
 183         };
 184
 185 int SSL_clear(SSL *s)
 186         {
 187
 188         if (s->method == NULL)
 189                 {
 190                 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
 191                 return(0);
 192                 }
 193
 194         if (ssl_clear_bad_session(s))
 195                 {
 196                 SSL_SESSION_free(s->session);
 197                 s->session=NULL;
 198                 }
 199
 200         s->error=0;
 201         s->hit=0;
 202         s->shutdown=0;
 203
 204 #if 0 /* Disabled since version 1.10 of this file (early return not
 205        * needed because SSL_clear is not called when doing renegotiation) */
 206         /* This is set if we are doing dynamic renegotiation so keep
 207          * the old cipher.  It is sort of a SSL_clear_lite :-) */
 208         if (s->renegotiate) return(1);
 209 #else
 210         if (s->renegotiate)
 211                 {
 212                 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
 213                 return 0;
 214                 }
 215 #endif
 216
 217         s->type=0;
 218
 219         s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
 220
 221         s->version=s->method->version;
 222         s->client_version=s->version;
 223         s->rwstate=SSL_NOTHING;
 224         s->rstate=SSL_ST_READ_HEADER;
 225 #if 0
 226         s->read_ahead=s->ctx->read_ahead;
 227 #endif
 228
 229         if (s->init_buf != NULL)
 230                 {
 231                 BUF_MEM_free(s->init_buf);
 232                 s->init_buf=NULL;
 233                 }
 234
 235         ssl_clear_cipher_ctx(s);
 236         ssl_clear_hash_ctx(&s->read_hash);
 237         ssl_clear_hash_ctx(&s->write_hash);
 238
 239         s->first_packet=0;
 240
 241 #if 1
 242         /* Check to see if we were changed into a different method, if
 243          * so, revert back if we are not doing session-id reuse. */
 244         if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
 245                 {
 246                 s->method->ssl_free(s);
 247                 s->method=s->ctx->method;
 248                 if (!s->method->ssl_new(s))
 249                         return(0);
 250                 }
 251         else
 252 #endif
 253                 s->method->ssl_clear(s);
 254         return(1);
 255         }
 256
 257 /** Used to change an SSL_CTXs default SSL method type */
 258 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
 259         {
 260         STACK_OF(SSL_CIPHER) *sk;
 261
 262         ctx->method=meth;
 263
 264         sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
 265                 &(ctx->cipher_list_by_id),
 266                 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST, ctx->cert);
 267         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
 268                 {
 269                 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
 270                 return(0);
 271                 }
 272         return(1);
 273         }
 274
 275 SSL *SSL_new(SSL_CTX *ctx)
 276         {
 277         SSL *s;
 278
 279         if (ctx == NULL)
 280                 {
 281                 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
 282                 return(NULL);
 283                 }
 284         if (ctx->method == NULL)
 285                 {
 286                 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
 287                 return(NULL);
 288                 }
 289
 290         s=(SSL *)OPENSSL_malloc(sizeof(SSL));
 291         if (s == NULL) goto err;
 292         memset(s,0,sizeof(SSL));
 293
 294 #ifndef OPENSSL_NO_KRB5
 295         s->kssl_ctx = kssl_ctx_new();
 296 #endif  /* OPENSSL_NO_KRB5 */
 297
 298         s->options=ctx->options;
 299         s->mode=ctx->mode;
 300         s->max_cert_list=ctx->max_cert_list;
 301
 302         if (ctx->cert != NULL)
 303                 {
 304                 /* Earlier library versions used to copy the pointer to
 305                  * the CERT, not its contents; only when setting new
 306                  * parameters for the per-SSL copy, ssl_cert_new would be
 307                  * called (and the direct reference to the per-SSL_CTX
 308                  * settings would be lost, but those still were indirectly
 309                  * accessed for various purposes, and for that reason they
 310                  * used to be known as s->ctx->default_cert).
 311                  * Now we don't look at the SSL_CTX's CERT after having
 312                  * duplicated it once. */
 313
 314                 s->cert = ssl_cert_dup(ctx->cert);
 315                 if (s->cert == NULL)
 316                         goto err;
 317                 }
 318         else
 319                 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
 320
 321         s->read_ahead=ctx->read_ahead;
 322         s->msg_callback=ctx->msg_callback;
 323         s->msg_callback_arg=ctx->msg_callback_arg;
 324         s->verify_mode=ctx->verify_mode;
 325         s->not_resumable_session_cb=ctx->not_resumable_session_cb;
 326 #if 0
 327         s->verify_depth=ctx->verify_depth;
 328 #endif
 329         s->sid_ctx_length=ctx->sid_ctx_length;
 330         OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
 331         memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
 332         s->verify_callback=ctx->default_verify_callback;
 333         s->generate_session_id=ctx->generate_session_id;
 334
 335         s->param = X509_VERIFY_PARAM_new();
 336         if (!s->param)
 337                 goto err;
 338         X509_VERIFY_PARAM_inherit(s->param, ctx->param);
 339 #if 0
 340         s->purpose = ctx->purpose;
 341         s->trust = ctx->trust;
 342 #endif
 343         s->quiet_shutdown=ctx->quiet_shutdown;
 344         s->max_send_fragment = ctx->max_send_fragment;
 345
 346         CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
 347         s->ctx=ctx;
 348 #ifndef OPENSSL_NO_TLSEXT
 349         s->tlsext_debug_cb = 0;
 350         s->tlsext_debug_arg = NULL;
 351         s->tlsext_ticket_expected = 0;
 352         s->tlsext_status_type = -1;
 353         s->tlsext_status_expected = 0;
 354         s->tlsext_ocsp_ids = NULL;
 355         s->tlsext_ocsp_exts = NULL;
 356         s->tlsext_ocsp_resp = NULL;
 357         s->tlsext_ocsp_resplen = -1;
 358         CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
 359         s->initial_ctx=ctx;
 360 #ifndef OPENSSL_NO_EC
 361         if (ctx->tlsext_ecpointformatlist)
 362                 {
 363                 s->tlsext_ecpointformatlist =
 364                         BUF_memdup(ctx->tlsext_ecpointformatlist,
 365                                         ctx->tlsext_ecpointformatlist_length);
 366                 if (!s->tlsext_ecpointformatlist)
 367                         goto err;
 368                 s->tlsext_ecpointformatlist_length =
 369                                         ctx->tlsext_ecpointformatlist_length;
 370                 }
 371         if (ctx->tlsext_ellipticcurvelist)
 372                 {
 373                 s->tlsext_ellipticcurvelist =
 374                         BUF_memdup(ctx->tlsext_ellipticcurvelist,
 375                                         ctx->tlsext_ellipticcurvelist_length);
 376                 if (!s->tlsext_ellipticcurvelist)
 377                         goto err;
 378                 s->tlsext_ellipticcurvelist_length =
 379                                         ctx->tlsext_ellipticcurvelist_length;
 380                 }
 381 #endif
 382 # ifndef OPENSSL_NO_NEXTPROTONEG
 383         s->next_proto_negotiated = NULL;
 384 # endif
 385
 386         if (s->ctx->alpn_client_proto_list)
 387                 {
 388                 s->alpn_client_proto_list =
 389                         OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
 390                 if (s->alpn_client_proto_list == NULL)
 391                         goto err;
 392                 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
 393                        s->ctx->alpn_client_proto_list_len);
 394                 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
 395                 }
 396 #endif
 397
 398         s->verify_result=X509_V_OK;
 399
 400         s->method=ctx->method;
 401
 402         if (!s->method->ssl_new(s))
 403                 goto err;
 404
 405         s->references=1;
 406         s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
 407
 408         SSL_clear(s);
 409
 410         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 411
 412 #ifndef OPENSSL_NO_PSK
 413         s->psk_client_callback=ctx->psk_client_callback;
 414         s->psk_server_callback=ctx->psk_server_callback;
 415 #endif
 416
 417         return(s);
 418 err:
 419         if (s != NULL)
 420                 {
 421                 if (s->cert != NULL)
 422                         ssl_cert_free(s->cert);
 423                 if (s->ctx != NULL)
 424                         SSL_CTX_free(s->ctx); /* decrement reference count */
 425                 OPENSSL_free(s);
 426                 }
 427         SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
 428         return(NULL);
 429         }
 430
 431 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
 432                                    unsigned int sid_ctx_len)
 433     {
 434     if(sid_ctx_len > sizeof ctx->sid_ctx)
 435         {
 436         SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
 437         return 0;
 438         }
 439     ctx->sid_ctx_length=sid_ctx_len;
 440     memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
 441
 442     return 1;
 443     }
 444
 445 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
 446                                unsigned int sid_ctx_len)
 447     {
 448     if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
 449         {
 450         SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
 451         return 0;
 452         }
 453     ssl->sid_ctx_length=sid_ctx_len;
 454     memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
 455
 456     return 1;
 457     }
 458
 459 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
 460         {
 461         CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
 462         ctx->generate_session_id = cb;
 463         CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
 464         return 1;
 465         }
 466
 467 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
 468         {
 469         CRYPTO_w_lock(CRYPTO_LOCK_SSL);
 470         ssl->generate_session_id = cb;
 471         CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
 472         return 1;
 473         }
 474
 475 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
 476                                 unsigned int id_len)
 477         {
 478         /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
 479          * we can "construct" a session to give us the desired check - ie. to
 480          * find if there's a session in the hash table that would conflict with
 481          * any new session built out of this id/id_len and the ssl_version in
 482          * use by this SSL. */
 483         SSL_SESSION r, *p;
 484
 485         if(id_len > sizeof r.session_id)
 486                 return 0;
 487
 488         r.ssl_version = ssl->version;
 489         r.session_id_length = id_len;
 490         memcpy(r.session_id, id, id_len);
 491         /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
 492          * callback is calling us to check the uniqueness of a shorter ID, it
 493          * must be compared as a padded-out ID because that is what it will be
 494          * converted to when the callback has finished choosing it. */
 495         if((r.ssl_version == SSL2_VERSION) &&
 496                         (id_len < SSL2_SSL_SESSION_ID_LENGTH))
 497                 {
 498                 memset(r.session_id + id_len, 0,
 499                         SSL2_SSL_SESSION_ID_LENGTH - id_len);
 500                 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
 501                 }
 502
 503         CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
 504         p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
 505         CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
 506         return (p != NULL);
 507         }
 508
 509 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
 510         {
 511         return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
 512         }
 513
 514 int SSL_set_purpose(SSL *s, int purpose)
 515         {
 516         return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
 517         }
 518
 519 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
 520         {
 521         return X509_VERIFY_PARAM_set_trust(s->param, trust);
 522         }
 523
 524 int SSL_set_trust(SSL *s, int trust)
 525         {
 526         return X509_VERIFY_PARAM_set_trust(s->param, trust);
 527         }
 528
 529 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
 530         {
 531         return X509_VERIFY_PARAM_set1(ctx->param, vpm);
 532         }
 533
 534 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
 535         {
 536         return X509_VERIFY_PARAM_set1(ssl->param, vpm);
 537         }
 538
 539 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
 540         {
 541         return ctx->param;
 542         }
 543
 544 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
 545         {
 546         return ssl->param;
 547         }
 548
 549 void SSL_certs_clear(SSL *s)
 550         {
 551         ssl_cert_clear_certs(s->cert);
 552         }
 553
 554 void SSL_free(SSL *s)
 555         {
 556         int i;
 557
 558         if(s == NULL)
 559             return;
 560
 561         i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
 562 #ifdef REF_PRINT
 563         REF_PRINT("SSL",s);
 564 #endif
 565         if (i > 0) return;
 566 #ifdef REF_CHECK
 567         if (i < 0)
 568                 {
 569                 fprintf(stderr,"SSL_free, bad reference count\n");
 570                 abort(); /* ok */
 571                 }
 572 #endif
 573
 574         if (s->param)
 575                 X509_VERIFY_PARAM_free(s->param);
 576
 577         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 578
 579         if (s->bbio != NULL)
 580                 {
 581                 /* If the buffering BIO is in place, pop it off */
 582                 if (s->bbio == s->wbio)
 583                         {
 584                         s->wbio=BIO_pop(s->wbio);
 585                         }
 586                 BIO_free(s->bbio);
 587                 s->bbio=NULL;
 588                 }
 589         if (s->rbio != NULL)
 590                 BIO_free_all(s->rbio);
 591         if ((s->wbio != NULL) && (s->wbio != s->rbio))
 592                 BIO_free_all(s->wbio);
 593
 594         if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
 595
 596         /* add extra stuff */
 597         if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
 598         if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
 599
 600         /* Make the next call work :-) */
 601         if (s->session != NULL)
 602                 {
 603                 ssl_clear_bad_session(s);
 604                 SSL_SESSION_free(s->session);
 605                 }
 606
 607         ssl_clear_cipher_ctx(s);
 608         ssl_clear_hash_ctx(&s->read_hash);
 609         ssl_clear_hash_ctx(&s->write_hash);
 610
 611         if (s->cert != NULL) ssl_cert_free(s->cert);
 612         /* Free up if allocated */
 613
 614 #ifndef OPENSSL_NO_TLSEXT
 615         if (s->tlsext_hostname)
 616                 OPENSSL_free(s->tlsext_hostname);
 617         if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
 618 #ifndef OPENSSL_NO_EC
 619         if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
 620         if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
 621 #endif /* OPENSSL_NO_EC */
 622         if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
 623         if (s->tlsext_ocsp_exts)
 624                 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
 625                                                 X509_EXTENSION_free);
 626         if (s->tlsext_ocsp_ids)
 627                 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
 628         if (s->tlsext_ocsp_resp)
 629                 OPENSSL_free(s->tlsext_ocsp_resp);
 630         if (s->alpn_client_proto_list)
 631                 OPENSSL_free(s->alpn_client_proto_list);
 632 #endif
 633
 634         if (s->client_CA != NULL)
 635                 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
 636
 637         if (s->method != NULL) s->method->ssl_free(s);
 638
 639         if (s->ctx) SSL_CTX_free(s->ctx);
 640
 641 #ifndef OPENSSL_NO_KRB5
 642         if (s->kssl_ctx != NULL)
 643                 kssl_ctx_free(s->kssl_ctx);
 644 #endif  /* OPENSSL_NO_KRB5 */
 645
 646 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
 647         if (s->next_proto_negotiated)
 648                 OPENSSL_free(s->next_proto_negotiated);
 649 #endif
 650
 651         if (s->srtp_profiles)
 652             sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
 653
 654         OPENSSL_free(s);
 655         }
 656
 657 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
 658         {
 659         /* If the output buffering BIO is still in place, remove it
 660          */
 661         if (s->bbio != NULL)
 662                 {
 663                 if (s->wbio == s->bbio)
 664                         {
 665                         s->wbio=s->wbio->next_bio;
 666                         s->bbio->next_bio=NULL;
 667                         }
 668                 }
 669         if ((s->rbio != NULL) && (s->rbio != rbio))
 670                 BIO_free_all(s->rbio);
 671         if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
 672                 BIO_free_all(s->wbio);
 673         s->rbio=rbio;
 674         s->wbio=wbio;
 675         }
 676
 677 BIO *SSL_get_rbio(const SSL *s)
 678         { return(s->rbio); }
 679
 680 BIO *SSL_get_wbio(const SSL *s)
 681         { return(s->wbio); }
 682
 683 int SSL_get_fd(const SSL *s)
 684         {
 685         return(SSL_get_rfd(s));
 686         }
 687
 688 int SSL_get_rfd(const SSL *s)
 689         {
 690         int ret= -1;
 691         BIO *b,*r;
 692
 693         b=SSL_get_rbio(s);
 694         r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
 695         if (r != NULL)
 696                 BIO_get_fd(r,&ret);
 697         return(ret);
 698         }
 699
 700 int SSL_get_wfd(const SSL *s)
 701         {
 702         int ret= -1;
 703         BIO *b,*r;
 704
 705         b=SSL_get_wbio(s);
 706         r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
 707         if (r != NULL)
 708                 BIO_get_fd(r,&ret);
 709         return(ret);
 710         }
 711
 712 #ifndef OPENSSL_NO_SOCK
 713 int SSL_set_fd(SSL *s,int fd)
 714         {
 715         int ret=0;
 716         BIO *bio=NULL;
 717
 718         bio=BIO_new(BIO_s_socket());
 719
 720         if (bio == NULL)
 721                 {
 722                 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
 723                 goto err;
 724                 }
 725         BIO_set_fd(bio,fd,BIO_NOCLOSE);
 726         SSL_set_bio(s,bio,bio);
 727         ret=1;
 728 err:
 729         return(ret);
 730         }
 731
 732 int SSL_set_wfd(SSL *s,int fd)
 733         {
 734         int ret=0;
 735         BIO *bio=NULL;
 736
 737         if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
 738                 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
 739                 {
 740                 bio=BIO_new(BIO_s_socket());
 741
 742                 if (bio == NULL)
 743                         { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
 744                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 745                 SSL_set_bio(s,SSL_get_rbio(s),bio);
 746                 }
 747         else
 748                 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
 749         ret=1;
 750 err:
 751         return(ret);
 752         }
 753
 754 int SSL_set_rfd(SSL *s,int fd)
 755         {
 756         int ret=0;
 757         BIO *bio=NULL;
 758
 759         if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
 760                 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
 761                 {
 762                 bio=BIO_new(BIO_s_socket());
 763
 764                 if (bio == NULL)
 765                         {
 766                         SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
 767                         goto err;
 768                         }
 769                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 770                 SSL_set_bio(s,bio,SSL_get_wbio(s));
 771                 }
 772         else
 773                 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
 774         ret=1;
 775 err:
 776         return(ret);
 777         }
 778 #endif
 779
 780
 781 /* return length of latest Finished message we sent, copy to 'buf' */
 782 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
 783         {
 784         size_t ret = 0;
 785
 786         if (s->s3 != NULL)
 787                 {
 788                 ret = s->s3->tmp.finish_md_len;
 789                 if (count > ret)
 790                         count = ret;
 791                 memcpy(buf, s->s3->tmp.finish_md, count);
 792                 }
 793         return ret;
 794         }
 795
 796 /* return length of latest Finished message we expected, copy to 'buf' */
 797 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
 798         {
 799         size_t ret = 0;
 800
 801         if (s->s3 != NULL)
 802                 {
 803                 ret = s->s3->tmp.peer_finish_md_len;
 804                 if (count > ret)
 805                         count = ret;
 806                 memcpy(buf, s->s3->tmp.peer_finish_md, count);
 807                 }
 808         return ret;
 809         }
 810
 811
 812 int SSL_get_verify_mode(const SSL *s)
 813         {
 814         return(s->verify_mode);
 815         }
 816
 817 int SSL_get_verify_depth(const SSL *s)
 818         {
 819         return X509_VERIFY_PARAM_get_depth(s->param);
 820         }
 821
 822 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
 823         {
 824         return(s->verify_callback);
 825         }
 826
 827 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
 828         {
 829         return(ctx->verify_mode);
 830         }
 831
 832 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
 833         {
 834         return X509_VERIFY_PARAM_get_depth(ctx->param);
 835         }
 836
 837 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
 838         {
 839         return(ctx->default_verify_callback);
 840         }
 841
 842 void SSL_set_verify(SSL *s,int mode,
 843                     int (*callback)(int ok,X509_STORE_CTX *ctx))
 844         {
 845         s->verify_mode=mode;
 846         if (callback != NULL)
 847                 s->verify_callback=callback;
 848         }
 849
 850 void SSL_set_verify_depth(SSL *s,int depth)
 851         {
 852         X509_VERIFY_PARAM_set_depth(s->param, depth);
 853         }
 854
 855 void SSL_set_read_ahead(SSL *s,int yes)
 856         {
 857         s->read_ahead=yes;
 858         }
 859
 860 int SSL_get_read_ahead(const SSL *s)
 861         {
 862         return(s->read_ahead);
 863         }
 864
 865 int SSL_pending(const SSL *s)
 866         {
 867         /* SSL_pending cannot work properly if read-ahead is enabled
 868          * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
 869          * and it is impossible to fix since SSL_pending cannot report
 870          * errors that may be observed while scanning the new data.
 871          * (Note that SSL_pending() is often used as a boolean value,
 872          * so we'd better not return -1.)
 873          */
 874         return(s->method->ssl_pending(s));
 875         }
 876
 877 X509 *SSL_get_peer_certificate(const SSL *s)
 878         {
 879         X509 *r;
 880
 881         if ((s == NULL) || (s->session == NULL))
 882                 r=NULL;
 883         else
 884                 r=s->session->peer;
 885
 886         if (r == NULL) return(r);
 887
 888         CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
 889
 890         return(r);
 891         }
 892
 893 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
 894         {
 895         STACK_OF(X509) *r;
 896
 897         if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
 898                 r=NULL;
 899         else
 900                 r=s->session->sess_cert->cert_chain;
 901
 902         /* If we are a client, cert_chain includes the peer's own
 903          * certificate; if we are a server, it does not. */
 904
 905         return(r);
 906         }
 907
 908 /* Now in theory, since the calling process own 't' it should be safe to
 909  * modify.  We need to be able to read f without being hassled */
 910 void SSL_copy_session_id(SSL *t,const SSL *f)
 911         {
 912         CERT *tmp;
 913
 914         /* Do we need to to SSL locking? */
 915         SSL_set_session(t,SSL_get_session(f));
 916
 917         /* what if we are setup as SSLv2 but want to talk SSLv3 or
 918          * vice-versa */
 919         if (t->method != f->method)
 920                 {
 921                 t->method->ssl_free(t); /* cleanup current */
 922                 t->method=f->method;    /* change method */
 923                 t->method->ssl_new(t);  /* setup new */
 924                 }
 925
 926         tmp=t->cert;
 927         if (f->cert != NULL)
 928                 {
 929                 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
 930                 t->cert=f->cert;
 931                 }
 932         else
 933                 t->cert=NULL;
 934         if (tmp != NULL) ssl_cert_free(tmp);
 935         SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
 936         }
 937
 938 /* Fix this so it checks all the valid key/cert options */
 939 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
 940         {
 941         if (    (ctx == NULL) ||
 942                 (ctx->cert == NULL) ||
 943                 (ctx->cert->key->x509 == NULL))
 944                 {
 945                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 946                 return(0);
 947                 }
 948         if      (ctx->cert->key->privatekey == NULL)
 949                 {
 950                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 951                 return(0);
 952                 }
 953         return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
 954         }
 955
 956 /* Fix this function so that it takes an optional type parameter */
 957 int SSL_check_private_key(const SSL *ssl)
 958         {
 959         if (ssl == NULL)
 960                 {
 961                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
 962                 return(0);
 963                 }
 964         if (ssl->cert == NULL)
 965                 {
 966                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 967                 return 0;
 968                 }
 969         if (ssl->cert->key->x509 == NULL)
 970                 {
 971                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 972                 return(0);
 973                 }
 974         if (ssl->cert->key->privatekey == NULL)
 975                 {
 976                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 977                 return(0);
 978                 }
 979         return(X509_check_private_key(ssl->cert->key->x509,
 980                 ssl->cert->key->privatekey));
 981         }
 982
 983 int SSL_accept(SSL *s)
 984         {
 985         if (s->handshake_func == 0)
 986                 /* Not properly initialized yet */
 987                 SSL_set_accept_state(s);
 988
 989         return(s->method->ssl_accept(s));
 990         }
 991
 992 int SSL_connect(SSL *s)
 993         {
 994         if (s->handshake_func == 0)
 995                 /* Not properly initialized yet */
 996                 SSL_set_connect_state(s);
 997
 998         return(s->method->ssl_connect(s));
 999         }
1000
1001 long SSL_get_default_timeout(const SSL *s)
1002         {
1003         return(s->method->get_timeout());
1004         }
1005
1006 int SSL_read(SSL *s,void *buf,int num)
1007         {
1008         if (s->handshake_func == 0)
1009                 {
1010                 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1011                 return -1;
1012                 }
1013
1014         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
1015                 {
1016                 s->rwstate=SSL_NOTHING;
1017                 return(0);
1018                 }
1019         return(s->method->ssl_read(s,buf,num));
1020         }
1021
1022 int SSL_peek(SSL *s,void *buf,int num)
1023         {
1024         if (s->handshake_func == 0)
1025                 {
1026                 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1027                 return -1;
1028                 }
1029
1030         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
1031                 {
1032                 return(0);
1033                 }
1034         return(s->method->ssl_peek(s,buf,num));
1035         }
1036
1037 int SSL_write(SSL *s,const void *buf,int num)
1038         {
1039         if (s->handshake_func == 0)
1040                 {
1041                 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1042                 return -1;
1043                 }
1044
1045         if (s->shutdown & SSL_SENT_SHUTDOWN)
1046                 {
1047                 s->rwstate=SSL_NOTHING;
1048                 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
1049                 return(-1);
1050                 }
1051         return(s->method->ssl_write(s,buf,num));
1052         }
1053
1054 int SSL_shutdown(SSL *s)
1055         {
1056         /* Note that this function behaves differently from what one might
1057          * expect.  Return values are 0 for no success (yet),
1058          * 1 for success; but calling it once is usually not enough,
1059          * even if blocking I/O is used (see ssl3_shutdown).
1060          */
1061
1062         if (s->handshake_func == 0)
1063                 {
1064                 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1065                 return -1;
1066                 }
1067
1068         if ((s != NULL) && !SSL_in_init(s))
1069                 return(s->method->ssl_shutdown(s));
1070         else
1071                 return(1);
1072         }
1073
1074 int SSL_renegotiate(SSL *s)
1075         {
1076         if (s->renegotiate == 0)
1077                 s->renegotiate=1;
1078
1079         s->new_session=1;
1080
1081         return(s->method->ssl_renegotiate(s));
1082         }
1083
1084 int SSL_renegotiate_abbreviated(SSL *s)
1085         {
1086         if (s->renegotiate == 0)
1087                 s->renegotiate=1;
1088
1089         s->new_session=0;
1090
1091         return(s->method->ssl_renegotiate(s));
1092         }
1093
1094 int SSL_renegotiate_pending(SSL *s)
1095         {
1096         /* becomes true when negotiation is requested;
1097          * false again once a handshake has finished */
1098         return (s->renegotiate != 0);
1099         }
1100
1101 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1102         {
1103         long l;
1104
1105         switch (cmd)
1106                 {
1107         case SSL_CTRL_GET_READ_AHEAD:
1108                 return(s->read_ahead);
1109         case SSL_CTRL_SET_READ_AHEAD:
1110                 l=s->read_ahead;
1111                 s->read_ahead=larg;
1112                 return(l);
1113
1114         case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1115                 s->msg_callback_arg = parg;
1116                 return 1;
1117
1118         case SSL_CTRL_OPTIONS:
1119                 return(s->options|=larg);
1120         case SSL_CTRL_CLEAR_OPTIONS:
1121                 return(s->options&=~larg);
1122         case SSL_CTRL_MODE:
1123                 return(s->mode|=larg);
1124         case SSL_CTRL_CLEAR_MODE:
1125                 return(s->mode &=~larg);
1126         case SSL_CTRL_GET_MAX_CERT_LIST:
1127                 return(s->max_cert_list);
1128         case SSL_CTRL_SET_MAX_CERT_LIST:
1129                 l=s->max_cert_list;
1130                 s->max_cert_list=larg;
1131                 return(l);
1132         case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1133                 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1134                         return 0;
1135                 s->max_send_fragment = larg;
1136                 return 1;
1137         case SSL_CTRL_GET_RI_SUPPORT:
1138                 if (s->s3)
1139                         return s->s3->send_connection_binding;
1140                 else return 0;
1141         case SSL_CTRL_CERT_FLAGS:
1142                 return(s->cert->cert_flags|=larg);
1143         case SSL_CTRL_CLEAR_CERT_FLAGS:
1144                 return(s->cert->cert_flags &=~larg);
1145
1146         case SSL_CTRL_GET_RAW_CIPHERLIST:
1147                 if (parg)
1148                         {
1149                         if (s->cert->ciphers_raw == NULL)
1150                                 return 0;
1151                         *(unsigned char **)parg = s->cert->ciphers_raw;
1152                         return (int)s->cert->ciphers_rawlen;
1153                         }
1154                 else
1155                         return ssl_put_cipher_by_char(s,NULL,NULL);
1156         default:
1157                 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1158                 }
1159         }
1160
1161 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1162         {
1163         switch(cmd)
1164                 {
1165         case SSL_CTRL_SET_MSG_CALLBACK:
1166                 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1167                 return 1;
1168
1169         default:
1170                 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1171                 }
1172         }
1173
1174 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1175         {
1176         return ctx->sessions;
1177         }
1178
1179 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1180         {
1181         long l;
1182         /* For some cases with ctx == NULL perform syntax checks */
1183         if (ctx == NULL)
1184                 {
1185                 switch (cmd)
1186                         {
1187 #ifndef OPENSSL_NO_EC
1188                 case SSL_CTRL_SET_CURVES_LIST:
1189                         return tls1_set_curves_list(NULL, NULL, parg);
1190 #endif
1191                 case SSL_CTRL_SET_SIGALGS_LIST:
1192                 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1193                         return tls1_set_sigalgs_list(NULL, parg, 0);
1194                 default:
1195                         return 0;
1196                         }
1197                 }
1198
1199         switch (cmd)
1200                 {
1201         case SSL_CTRL_GET_READ_AHEAD:
1202                 return(ctx->read_ahead);
1203         case SSL_CTRL_SET_READ_AHEAD:
1204                 l=ctx->read_ahead;
1205                 ctx->read_ahead=larg;
1206                 return(l);
1207
1208         case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1209                 ctx->msg_callback_arg = parg;
1210                 return 1;
1211
1212         case SSL_CTRL_GET_MAX_CERT_LIST:
1213                 return(ctx->max_cert_list);
1214         case SSL_CTRL_SET_MAX_CERT_LIST:
1215                 l=ctx->max_cert_list;
1216                 ctx->max_cert_list=larg;
1217                 return(l);
1218
1219         case SSL_CTRL_SET_SESS_CACHE_SIZE:
1220                 l=ctx->session_cache_size;
1221                 ctx->session_cache_size=larg;
1222                 return(l);
1223         case SSL_CTRL_GET_SESS_CACHE_SIZE:
1224                 return(ctx->session_cache_size);
1225         case SSL_CTRL_SET_SESS_CACHE_MODE:
1226                 l=ctx->session_cache_mode;
1227                 ctx->session_cache_mode=larg;
1228                 return(l);
1229         case SSL_CTRL_GET_SESS_CACHE_MODE:
1230                 return(ctx->session_cache_mode);
1231
1232         case SSL_CTRL_SESS_NUMBER:
1233                 return(lh_SSL_SESSION_num_items(ctx->sessions));
1234         case SSL_CTRL_SESS_CONNECT:
1235                 return(ctx->stats.sess_connect);
1236         case SSL_CTRL_SESS_CONNECT_GOOD:
1237                 return(ctx->stats.sess_connect_good);
1238         case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1239                 return(ctx->stats.sess_connect_renegotiate);
1240         case SSL_CTRL_SESS_ACCEPT:
1241                 return(ctx->stats.sess_accept);
1242         case SSL_CTRL_SESS_ACCEPT_GOOD:
1243                 return(ctx->stats.sess_accept_good);
1244         case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1245                 return(ctx->stats.sess_accept_renegotiate);
1246         case SSL_CTRL_SESS_HIT:
1247                 return(ctx->stats.sess_hit);
1248         case SSL_CTRL_SESS_CB_HIT:
1249                 return(ctx->stats.sess_cb_hit);
1250         case SSL_CTRL_SESS_MISSES:
1251                 return(ctx->stats.sess_miss);
1252         case SSL_CTRL_SESS_TIMEOUTS:
1253                 return(ctx->stats.sess_timeout);
1254         case SSL_CTRL_SESS_CACHE_FULL:
1255                 return(ctx->stats.sess_cache_full);
1256         case SSL_CTRL_OPTIONS:
1257                 return(ctx->options|=larg);
1258         case SSL_CTRL_CLEAR_OPTIONS:
1259                 return(ctx->options&=~larg);
1260         case SSL_CTRL_MODE:
1261                 return(ctx->mode|=larg);
1262         case SSL_CTRL_CLEAR_MODE:
1263                 return(ctx->mode&=~larg);
1264         case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1265                 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1266                         return 0;
1267                 ctx->max_send_fragment = larg;
1268                 return 1;
1269         case SSL_CTRL_CERT_FLAGS:
1270                 return(ctx->cert->cert_flags|=larg);
1271         case SSL_CTRL_CLEAR_CERT_FLAGS:
1272                 return(ctx->cert->cert_flags &=~larg);
1273         default:
1274                 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1275                 }
1276         }
1277
1278 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1279         {
1280         switch(cmd)
1281                 {
1282         case SSL_CTRL_SET_MSG_CALLBACK:
1283                 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1284                 return 1;
1285
1286         default:
1287                 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1288                 }
1289         }
1290
1291 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1292         {
1293         long l;
1294
1295         l=a->id-b->id;
1296         if (l == 0L)
1297                 return(0);
1298         else
1299                 return((l > 0)?1:-1);
1300         }
1301
1302 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1303                         const SSL_CIPHER * const *bp)
1304         {
1305         long l;
1306
1307         l=(*ap)->id-(*bp)->id;
1308         if (l == 0L)
1309                 return(0);
1310         else
1311                 return((l > 0)?1:-1);
1312         }
1313
1314 /** return a STACK of the ciphers available for the SSL and in order of
1315  * preference */
1316 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1317         {
1318         if (s != NULL)
1319                 {
1320                 if (s->cipher_list != NULL)
1321                         {
1322                         return(s->cipher_list);
1323                         }
1324                 else if ((s->ctx != NULL) &&
1325                         (s->ctx->cipher_list != NULL))
1326                         {
1327                         return(s->ctx->cipher_list);
1328                         }
1329                 }
1330         return(NULL);
1331         }
1332
1333 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1334         {
1335         STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1336         int i;
1337         ciphers = SSL_get_ciphers(s);
1338         if (!ciphers)
1339                 return NULL;
1340         ssl_set_client_disabled(s);
1341         for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++)
1342                 {
1343                 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1344                 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1345                         {
1346                         if (!sk)
1347                                 sk = sk_SSL_CIPHER_new_null();
1348                         if (!sk)
1349                                 return NULL;
1350                         if (!sk_SSL_CIPHER_push(sk, c))
1351                                 {
1352                                 sk_SSL_CIPHER_free(sk);
1353                                 return NULL;
1354                                 }
1355                         }
1356                 }
1357         return sk;
1358         }
1359
1360 /** return a STACK of the ciphers available for the SSL and in order of
1361  * algorithm id */
1362 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1363         {
1364         if (s != NULL)
1365                 {
1366                 if (s->cipher_list_by_id != NULL)
1367                         {
1368                         return(s->cipher_list_by_id);
1369                         }
1370                 else if ((s->ctx != NULL) &&
1371                         (s->ctx->cipher_list_by_id != NULL))
1372                         {
1373                         return(s->ctx->cipher_list_by_id);
1374                         }
1375                 }
1376         return(NULL);
1377         }
1378
1379 /** The old interface to get the same thing as SSL_get_ciphers() */
1380 const char *SSL_get_cipher_list(const SSL *s,int n)
1381         {
1382         SSL_CIPHER *c;
1383         STACK_OF(SSL_CIPHER) *sk;
1384
1385         if (s == NULL) return(NULL);
1386         sk=SSL_get_ciphers(s);
1387         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1388                 return(NULL);
1389         c=sk_SSL_CIPHER_value(sk,n);
1390         if (c == NULL) return(NULL);
1391         return(c->name);
1392         }
1393
1394 /** specify the ciphers to be used by default by the SSL_CTX */
1395 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1396         {
1397         STACK_OF(SSL_CIPHER) *sk;
1398
1399         sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1400                 &ctx->cipher_list_by_id,str, ctx->cert);
1401         /* ssl_create_cipher_list may return an empty stack if it
1402          * was unable to find a cipher matching the given rule string
1403          * (for example if the rule string specifies a cipher which
1404          * has been disabled). This is not an error as far as
1405          * ssl_create_cipher_list is concerned, and hence
1406          * ctx->cipher_list and ctx->cipher_list_by_id has been
1407          * updated. */
1408         if (sk == NULL)
1409                 return 0;
1410         else if (sk_SSL_CIPHER_num(sk) == 0)
1411                 {
1412                 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1413                 return 0;
1414                 }
1415         return 1;
1416         }
1417
1418 /** specify the ciphers to be used by the SSL */
1419 int SSL_set_cipher_list(SSL *s,const char *str)
1420         {
1421         STACK_OF(SSL_CIPHER) *sk;
1422
1423         sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1424                 &s->cipher_list_by_id,str, s->cert);
1425         /* see comment in SSL_CTX_set_cipher_list */
1426         if (sk == NULL)
1427                 return 0;
1428         else if (sk_SSL_CIPHER_num(sk) == 0)
1429                 {
1430                 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1431                 return 0;
1432                 }
1433         return 1;
1434         }
1435
1436 /* works well for SSLv2, not so good for SSLv3 */
1437 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1438         {
1439         char *p;
1440         STACK_OF(SSL_CIPHER) *sk;
1441         SSL_CIPHER *c;
1442         int i;
1443
1444         if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1445                 (len < 2))
1446                 return(NULL);
1447
1448         p=buf;
1449         sk=s->session->ciphers;
1450
1451         if (sk_SSL_CIPHER_num(sk) == 0)
1452                 return NULL;
1453
1454         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1455                 {
1456                 int n;
1457
1458                 c=sk_SSL_CIPHER_value(sk,i);
1459                 n=strlen(c->name);
1460                 if (n+1 > len)
1461                         {
1462                         if (p != buf)
1463                                 --p;
1464                         *p='\0';
1465                         return buf;
1466                         }
1467                 strcpy(p,c->name);
1468                 p+=n;
1469                 *(p++)=':';
1470                 len-=n+1;
1471                 }
1472         p[-1]='\0';
1473         return(buf);
1474         }
1475
1476 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1477                              int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1478         {
1479         int i,j=0;
1480         SSL_CIPHER *c;
1481         unsigned char *q;
1482         int empty_reneg_info_scsv = !s->renegotiate;
1483         /* Set disabled masks for this session */
1484         ssl_set_client_disabled(s);
1485
1486         if (sk == NULL) return(0);
1487         q=p;
1488         if (put_cb == NULL)
1489                 put_cb = s->method->put_cipher_by_char;
1490
1491         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1492                 {
1493                 c=sk_SSL_CIPHER_value(sk,i);
1494                 /* Skip disabled ciphers */
1495                 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1496                         continue;
1497 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1498                 if (c->id == SSL3_CK_SCSV)
1499                         {
1500                         if (!empty_reneg_info_scsv)
1501                                 continue;
1502                         else
1503                                 empty_reneg_info_scsv = 0;
1504                         }
1505 #endif
1506                 j = put_cb(c,p);
1507                 p+=j;
1508                 }
1509         /* If p == q, no ciphers; caller indicates an error.
1510          * Otherwise, add applicable SCSVs. */
1511         if (p != q)
1512                 {
1513                 if (empty_reneg_info_scsv)
1514                         {
1515                         static SSL_CIPHER scsv =
1516                                 {
1517                                 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1518                                 };
1519                         j = put_cb(&scsv,p);
1520                         p+=j;
1521 #ifdef OPENSSL_RI_DEBUG
1522                         fprintf(stderr, "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1523 #endif
1524                         }
1525                 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV)
1526                         {
1527                         static SSL_CIPHER scsv =
1528                                 {
1529                                 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1530                                 };
1531                         j = put_cb(&scsv,p);
1532                         p+=j;
1533                         }
1534                 }
1535
1536         return(p-q);
1537         }
1538
1539 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1540                                                STACK_OF(SSL_CIPHER) **skp)
1541         {
1542         const SSL_CIPHER *c;
1543         STACK_OF(SSL_CIPHER) *sk;
1544         int i,n;
1545
1546         if (s->s3)
1547                 s->s3->send_connection_binding = 0;
1548
1549         n=ssl_put_cipher_by_char(s,NULL,NULL);
1550         if (n == 0 || (num%n) != 0)
1551                 {
1552                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1553                 return(NULL);
1554                 }
1555         if ((skp == NULL) || (*skp == NULL))
1556                 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1557         else
1558                 {
1559                 sk= *skp;
1560                 sk_SSL_CIPHER_zero(sk);
1561                 }
1562
1563         if (s->cert->ciphers_raw)
1564                 OPENSSL_free(s->cert->ciphers_raw);
1565         s->cert->ciphers_raw = BUF_memdup(p, num);
1566         if (s->cert->ciphers_raw == NULL)
1567                 {
1568                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1569                 goto err;
1570                 }
1571         s->cert->ciphers_rawlen = (size_t)num;
1572
1573         for (i=0; i<num; i+=n)
1574                 {
1575                 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1576                 if (s->s3 && (n != 3 || !p[0]) &&
1577                         (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1578                         (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1579                         {
1580                         /* SCSV fatal if renegotiating */
1581                         if (s->renegotiate)
1582                                 {
1583                                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1584                                 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1585                                 goto err;
1586                                 }
1587                         s->s3->send_connection_binding = 1;
1588                         p += n;
1589 #ifdef OPENSSL_RI_DEBUG
1590                         fprintf(stderr, "SCSV received by server\n");
1591 #endif
1592                         continue;
1593                         }
1594
1595                 /* Check for TLS_FALLBACK_SCSV */
1596                 if ((n != 3 || !p[0]) &&
1597                         (p[n-2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1598                         (p[n-1] == (SSL3_CK_FALLBACK_SCSV & 0xff)))
1599                         {
1600                         /* The SCSV indicates that the client previously tried a higher version.
1601                          * Fail if the current version is an unexpected downgrade. */
1602                         if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL))
1603                                 {
1604                                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_INAPPROPRIATE_FALLBACK);
1605                                 if (s->s3)
1606                                         ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INAPPROPRIATE_FALLBACK);
1607                                 goto err;
1608                                 }
1609                         p += n;
1610                         continue;
1611                         }
1612
1613                 c=ssl_get_cipher_by_char(s,p);
1614                 p+=n;
1615                 if (c != NULL)
1616                         {
1617                         if (!sk_SSL_CIPHER_push(sk,c))
1618                                 {
1619                                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1620                                 goto err;
1621                                 }
1622                         }
1623                 }
1624
1625         if (skp != NULL)
1626                 *skp=sk;
1627         return(sk);
1628 err:
1629         if ((skp == NULL) || (*skp == NULL))
1630                 sk_SSL_CIPHER_free(sk);
1631         return(NULL);
1632         }
1633
1634
1635 #ifndef OPENSSL_NO_TLSEXT
1636 /** return a servername extension value if provided in Client Hello, or NULL.
1637  * So far, only host_name types are defined (RFC 3546).
1638  */
1639
1640 const char *SSL_get_servername(const SSL *s, const int type)
1641         {
1642         if (type != TLSEXT_NAMETYPE_host_name)
1643                 return NULL;
1644
1645         return s->session && !s->tlsext_hostname ?
1646                 s->session->tlsext_hostname :
1647                 s->tlsext_hostname;
1648         }
1649
1650 int SSL_get_servername_type(const SSL *s)
1651         {
1652         if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1653                 return TLSEXT_NAMETYPE_host_name;
1654         return -1;
1655         }
1656
1657 /* SSL_select_next_proto implements the standard protocol selection. It is
1658  * expected that this function is called from the callback set by
1659  * SSL_CTX_set_next_proto_select_cb.
1660  *
1661  * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
1662  * strings. The length byte itself is not included in the length. A byte
1663  * string of length 0 is invalid. No byte string may be truncated.
1664  *
1665  * The current, but experimental algorithm for selecting the protocol is:
1666  *
1667  * 1) If the server doesn't support NPN then this is indicated to the
1668  * callback. In this case, the client application has to abort the connection
1669  * or have a default application level protocol.
1670  *
1671  * 2) If the server supports NPN, but advertises an empty list then the
1672  * client selects the first protcol in its list, but indicates via the
1673  * API that this fallback case was enacted.
1674  *
1675  * 3) Otherwise, the client finds the first protocol in the server's list
1676  * that it supports and selects this protocol. This is because it's
1677  * assumed that the server has better information about which protocol
1678  * a client should use.
1679  *
1680  * 4) If the client doesn't support any of the server's advertised
1681  * protocols, then this is treated the same as case 2.
1682  *
1683  * It returns either
1684  * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
1685  * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1686  */
1687 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, const unsigned char *server, unsigned int server_len, const unsigned char *client, unsigned int client_len)
1688         {
1689         unsigned int i, j;
1690         const unsigned char *result;
1691         int status = OPENSSL_NPN_UNSUPPORTED;
1692
1693         /* For each protocol in server preference order, see if we support it. */
1694         for (i = 0; i < server_len; )
1695                 {
1696                 for (j = 0; j < client_len; )
1697                         {
1698                         if (server[i] == client[j] &&
1699                             memcmp(&server[i+1], &client[j+1], server[i]) == 0)
1700                                 {
1701                                 /* We found a match */
1702                                 result = &server[i];
1703                                 status = OPENSSL_NPN_NEGOTIATED;
1704                                 goto found;
1705                                 }
1706                         j += client[j];
1707                         j++;
1708                         }
1709                 i += server[i];
1710                 i++;
1711                 }
1712
1713         /* There's no overlap between our protocols and the server's list. */
1714         result = client;
1715         status = OPENSSL_NPN_NO_OVERLAP;
1716
1717         found:
1718         *out = (unsigned char *) result + 1;
1719         *outlen = result[0];
1720         return status;
1721         }
1722
1723 # ifndef OPENSSL_NO_NEXTPROTONEG
1724 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's
1725  * requested protocol for this connection and returns 0. If the client didn't
1726  * request any protocol, then *data is set to NULL.
1727  *
1728  * Note that the client can request any protocol it chooses. The value returned
1729  * from this function need not be a member of the list of supported protocols
1730  * provided by the callback.
1731  */
1732 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len)
1733         {
1734         *data = s->next_proto_negotiated;
1735         if (!*data) {
1736                 *len = 0;
1737         } else {
1738                 *len = s->next_proto_negotiated_len;
1739         }
1740 }
1741
1742 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
1743  * TLS server needs a list of supported protocols for Next Protocol
1744  * Negotiation. The returned list must be in wire format.  The list is returned
1745  * by setting |out| to point to it and |outlen| to its length. This memory will
1746  * not be modified, but one should assume that the SSL* keeps a reference to
1747  * it.
1748  *
1749  * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no
1750  * such extension will be included in the ServerHello. */
1751 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, const unsigned char **out, unsigned int *outlen, void *arg), void *arg)
1752         {
1753         ctx->next_protos_advertised_cb = cb;
1754         ctx->next_protos_advertised_cb_arg = arg;
1755         }
1756
1757 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1758  * client needs to select a protocol from the server's provided list. |out|
1759  * must be set to point to the selected protocol (which may be within |in|).
1760  * The length of the protocol name must be written into |outlen|. The server's
1761  * advertised protocols are provided in |in| and |inlen|. The callback can
1762  * assume that |in| is syntactically valid.
1763  *
1764  * The client must select a protocol. It is fatal to the connection if this
1765  * callback returns a value other than SSL_TLSEXT_ERR_OK.
1766  */
1767 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg), void *arg)
1768         {
1769         ctx->next_proto_select_cb = cb;
1770         ctx->next_proto_select_cb_arg = arg;
1771         }
1772 # endif
1773
1774 /* SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1775  * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1776  * length-prefixed strings).
1777  *
1778  * Returns 0 on success. */
1779 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char* protos,
1780                             unsigned protos_len)
1781         {
1782         if (ctx->alpn_client_proto_list)
1783                 OPENSSL_free(ctx->alpn_client_proto_list);
1784
1785         ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1786         if (!ctx->alpn_client_proto_list)
1787                 return 1;
1788         memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1789         ctx->alpn_client_proto_list_len = protos_len;
1790
1791         return 0;
1792         }
1793
1794 /* SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1795  * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1796  * length-prefixed strings).
1797  *
1798  * Returns 0 on success. */
1799 int SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos,
1800                         unsigned protos_len)
1801         {
1802         if (ssl->alpn_client_proto_list)
1803                 OPENSSL_free(ssl->alpn_client_proto_list);
1804
1805         ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1806         if (!ssl->alpn_client_proto_list)
1807                 return 1;
1808         memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1809         ssl->alpn_client_proto_list_len = protos_len;
1810
1811         return 0;
1812         }
1813
1814 /* SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is called
1815  * during ClientHello processing in order to select an ALPN protocol from the
1816  * client's list of offered protocols. */
1817 void SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx,
1818                                 int (*cb) (SSL *ssl,
1819                                            const unsigned char **out,
1820                                            unsigned char *outlen,
1821                                            const unsigned char *in,
1822                                            unsigned int inlen,
1823                                            void *arg),
1824                                 void *arg)
1825         {
1826         ctx->alpn_select_cb = cb;
1827         ctx->alpn_select_cb_arg = arg;
1828         }
1829
1830 /* SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
1831  * On return it sets |*data| to point to |*len| bytes of protocol name (not
1832  * including the leading length-prefix byte). If the server didn't respond with
1833  * a negotiated protocol then |*len| will be zero. */
1834 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1835                             unsigned *len)
1836         {
1837         *data = NULL;
1838         if (ssl->s3)
1839                 *data = ssl->s3->alpn_selected;
1840         if (*data == NULL)
1841                 *len = 0;
1842         else
1843                 *len = ssl->s3->alpn_selected_len;
1844         }
1845
1846 #endif /* !OPENSSL_NO_TLSEXT */
1847
1848 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1849         const char *label, size_t llen, const unsigned char *p, size_t plen,
1850         int use_context)
1851         {
1852         if (s->version < TLS1_VERSION)
1853                 return -1;
1854
1855         return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1856                                                            llen, p, plen,
1857                                                            use_context);
1858         }
1859
1860 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1861         {
1862         unsigned long l;
1863
1864         l=(unsigned long)
1865                 ((unsigned int) a->session_id[0]     )|
1866                 ((unsigned int) a->session_id[1]<< 8L)|
1867                 ((unsigned long)a->session_id[2]<<16L)|
1868                 ((unsigned long)a->session_id[3]<<24L);
1869         return(l);
1870         }
1871
1872 /* NB: If this function (or indeed the hash function which uses a sort of
1873  * coarser function than this one) is changed, ensure
1874  * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1875  * able to construct an SSL_SESSION that will collide with any existing session
1876  * with a matching session ID. */
1877 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1878         {
1879         if (a->ssl_version != b->ssl_version)
1880                 return(1);
1881         if (a->session_id_length != b->session_id_length)
1882                 return(1);
1883         return(memcmp(a->session_id,b->session_id,a->session_id_length));
1884         }
1885
1886 /* These wrapper functions should remain rather than redeclaring
1887  * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1888  * variable. The reason is that the functions aren't static, they're exposed via
1889  * ssl.h. */
1890 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1891 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1892
1893 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1894         {
1895         SSL_CTX *ret=NULL;
1896
1897         if (meth == NULL)
1898                 {
1899                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1900                 return(NULL);
1901                 }
1902
1903 #ifdef OPENSSL_FIPS
1904         if (FIPS_mode() && (meth->version < TLS1_VERSION))
1905                 {
1906                 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1907                 return NULL;
1908                 }
1909 #endif
1910
1911         if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1912                 {
1913                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1914                 goto err;
1915                 }
1916         ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1917         if (ret == NULL)
1918                 goto err;
1919
1920         memset(ret,0,sizeof(SSL_CTX));
1921
1922         ret->method=meth;
1923
1924         ret->cert_store=NULL;
1925         ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1926         ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1927         ret->session_cache_head=NULL;
1928         ret->session_cache_tail=NULL;
1929
1930         /* We take the system default */
1931         ret->session_timeout=meth->get_timeout();
1932
1933         ret->new_session_cb=0;
1934         ret->remove_session_cb=0;
1935         ret->get_session_cb=0;
1936         ret->generate_session_id=0;
1937
1938         memset((char *)&ret->stats,0,sizeof(ret->stats));
1939
1940         ret->references=1;
1941         ret->quiet_shutdown=0;
1942
1943 /*      ret->cipher=NULL;*/
1944 /*      ret->s2->challenge=NULL;
1945         ret->master_key=NULL;
1946         ret->key_arg=NULL;
1947         ret->s2->conn_id=NULL; */
1948
1949         ret->info_callback=NULL;
1950
1951         ret->app_verify_callback=0;
1952         ret->app_verify_arg=NULL;
1953
1954         ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1955         ret->read_ahead=0;
1956         ret->msg_callback=0;
1957         ret->msg_callback_arg=NULL;
1958         ret->verify_mode=SSL_VERIFY_NONE;
1959 #if 0
1960         ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1961 #endif
1962         ret->sid_ctx_length=0;
1963         ret->default_verify_callback=NULL;
1964         if ((ret->cert=ssl_cert_new()) == NULL)
1965                 goto err;
1966
1967         ret->default_passwd_callback=0;
1968         ret->default_passwd_callback_userdata=NULL;
1969         ret->client_cert_cb=0;
1970         ret->app_gen_cookie_cb=0;
1971         ret->app_verify_cookie_cb=0;
1972
1973         ret->sessions=lh_SSL_SESSION_new();
1974         if (ret->sessions == NULL) goto err;
1975         ret->cert_store=X509_STORE_new();
1976         if (ret->cert_store == NULL) goto err;
1977
1978         ssl_create_cipher_list(ret->method,
1979                 &ret->cipher_list,&ret->cipher_list_by_id,
1980                 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST, ret->cert);
1981         if (ret->cipher_list == NULL
1982             || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1983                 {
1984                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1985                 goto err2;
1986                 }
1987
1988         ret->param = X509_VERIFY_PARAM_new();
1989         if (!ret->param)
1990                 goto err;
1991
1992         if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1993                 {
1994                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1995                 goto err2;
1996                 }
1997         if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1998                 {
1999                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2000                 goto err2;
2001                 }
2002         if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
2003                 {
2004                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2005                 goto err2;
2006                 }
2007
2008         if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
2009                 goto err;
2010
2011         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
2012
2013         ret->extra_certs=NULL;
2014         /* No compression for DTLS */
2015         if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2016                 ret->comp_methods=SSL_COMP_get_compression_methods();
2017
2018         ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2019
2020 #ifndef OPENSSL_NO_TLSEXT
2021         ret->tlsext_servername_callback = 0;
2022         ret->tlsext_servername_arg = NULL;
2023         /* Setup RFC4507 ticket keys */
2024         if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
2025                 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
2026                 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
2027                 ret->options |= SSL_OP_NO_TICKET;
2028
2029         ret->tlsext_status_cb = 0;
2030         ret->tlsext_status_arg = NULL;
2031
2032 # ifndef OPENSSL_NO_NEXTPROTONEG
2033         ret->next_protos_advertised_cb = 0;
2034         ret->next_proto_select_cb = 0;
2035 # endif
2036 #endif
2037 #ifndef OPENSSL_NO_PSK
2038         ret->psk_identity_hint=NULL;
2039         ret->psk_client_callback=NULL;
2040         ret->psk_server_callback=NULL;
2041 #endif
2042 #ifndef OPENSSL_NO_SRP
2043         SSL_CTX_SRP_CTX_init(ret);
2044 #endif
2045 #ifndef OPENSSL_NO_BUF_FREELISTS
2046         ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
2047         ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
2048         if (!ret->rbuf_freelist)
2049                 goto err;
2050         ret->rbuf_freelist->chunklen = 0;
2051         ret->rbuf_freelist->len = 0;
2052         ret->rbuf_freelist->head = NULL;
2053         ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
2054         if (!ret->wbuf_freelist)
2055                 {
2056                 OPENSSL_free(ret->rbuf_freelist);
2057                 goto err;
2058                 }
2059         ret->wbuf_freelist->chunklen = 0;
2060         ret->wbuf_freelist->len = 0;
2061         ret->wbuf_freelist->head = NULL;
2062 #endif
2063 #ifndef OPENSSL_NO_ENGINE
2064         ret->client_cert_engine = NULL;
2065 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2066 #define eng_strx(x)     #x
2067 #define eng_str(x)      eng_strx(x)
2068         /* Use specific client engine automatically... ignore errors */
2069         {
2070         ENGINE *eng;
2071         eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2072         if (!eng)
2073                 {
2074                 ERR_clear_error();
2075                 ENGINE_load_builtin_engines();
2076                 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2077                 }
2078         if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2079                 ERR_clear_error();
2080         }
2081 #endif
2082 #endif
2083         /* Default is to connect to non-RI servers. When RI is more widely
2084          * deployed might change this.
2085          */
2086         ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2087
2088         return(ret);
2089 err:
2090         SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
2091 err2:
2092         if (ret != NULL) SSL_CTX_free(ret);
2093         return(NULL);
2094         }
2095
2096 #if 0
2097 static void SSL_COMP_free(SSL_COMP *comp)
2098     { OPENSSL_free(comp); }
2099 #endif
2100
2101 #ifndef OPENSSL_NO_BUF_FREELISTS
2102 static void
2103 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
2104         {
2105         SSL3_BUF_FREELIST_ENTRY *ent, *next;
2106         for (ent = list->head; ent; ent = next)
2107                 {
2108                 next = ent->next;
2109                 OPENSSL_free(ent);
2110                 }
2111         OPENSSL_free(list);
2112         }
2113 #endif
2114
2115 void SSL_CTX_free(SSL_CTX *a)
2116         {
2117         int i;
2118
2119         if (a == NULL) return;
2120
2121         i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
2122 #ifdef REF_PRINT
2123         REF_PRINT("SSL_CTX",a);
2124 #endif
2125         if (i > 0) return;
2126 #ifdef REF_CHECK
2127         if (i < 0)
2128                 {
2129                 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
2130                 abort(); /* ok */
2131                 }
2132 #endif
2133
2134         if (a->param)
2135                 X509_VERIFY_PARAM_free(a->param);
2136
2137         /*
2138          * Free internal session cache. However: the remove_cb() may reference
2139          * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2140          * after the sessions were flushed.
2141          * As the ex_data handling routines might also touch the session cache,
2142          * the most secure solution seems to be: empty (flush) the cache, then
2143          * free ex_data, then finally free the cache.
2144          * (See ticket [openssl.org #212].)
2145          */
2146         if (a->sessions != NULL)
2147                 SSL_CTX_flush_sessions(a,0);
2148
2149         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2150
2151         if (a->sessions != NULL)
2152                 lh_SSL_SESSION_free(a->sessions);
2153
2154         if (a->cert_store != NULL)
2155                 X509_STORE_free(a->cert_store);
2156         if (a->cipher_list != NULL)
2157                 sk_SSL_CIPHER_free(a->cipher_list);
2158         if (a->cipher_list_by_id != NULL)
2159                 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2160         if (a->cert != NULL)
2161                 ssl_cert_free(a->cert);
2162         if (a->client_CA != NULL)
2163                 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
2164         if (a->extra_certs != NULL)
2165                 sk_X509_pop_free(a->extra_certs,X509_free);
2166 #if 0 /* This should never be done, since it removes a global database */
2167         if (a->comp_methods != NULL)
2168                 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
2169 #else
2170         a->comp_methods = NULL;
2171 #endif
2172
2173         if (a->srtp_profiles)
2174                 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2175
2176 #ifndef OPENSSL_NO_PSK
2177         if (a->psk_identity_hint)
2178                 OPENSSL_free(a->psk_identity_hint);
2179 #endif
2180 #ifndef OPENSSL_NO_SRP
2181         SSL_CTX_SRP_CTX_free(a);
2182 #endif
2183 #ifndef OPENSSL_NO_ENGINE
2184         if (a->client_cert_engine)
2185                 ENGINE_finish(a->client_cert_engine);
2186 #endif
2187
2188 #ifndef OPENSSL_NO_BUF_FREELISTS
2189         if (a->wbuf_freelist)
2190                 ssl_buf_freelist_free(a->wbuf_freelist);
2191         if (a->rbuf_freelist)
2192                 ssl_buf_freelist_free(a->rbuf_freelist);
2193 #endif
2194 #ifndef OPENSSL_NO_TLSEXT
2195 # ifndef OPENSSL_NO_EC
2196         if (a->tlsext_ecpointformatlist)
2197                 OPENSSL_free(a->tlsext_ecpointformatlist);
2198         if (a->tlsext_ellipticcurvelist)
2199                 OPENSSL_free(a->tlsext_ellipticcurvelist);
2200 # endif /* OPENSSL_NO_EC */
2201         if (a->alpn_client_proto_list != NULL)
2202                 OPENSSL_free(a->alpn_client_proto_list);
2203 #endif
2204
2205         OPENSSL_free(a);
2206         }
2207
2208 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2209         {
2210         ctx->default_passwd_callback=cb;
2211         }
2212
2213 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
2214         {
2215         ctx->default_passwd_callback_userdata=u;
2216         }
2217
2218 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
2219         {
2220         ctx->app_verify_callback=cb;
2221         ctx->app_verify_arg=arg;
2222         }
2223
2224 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
2225         {
2226         ctx->verify_mode=mode;
2227         ctx->default_verify_callback=cb;
2228         }
2229
2230 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
2231         {
2232         X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2233         }
2234
2235 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb)(SSL *ssl, void *arg), void *arg)
2236         {
2237         ssl_cert_set_cert_cb(c->cert, cb, arg);
2238         }
2239
2240 void SSL_set_cert_cb(SSL *s, int (*cb)(SSL *ssl, void *arg), void *arg)
2241         {
2242         ssl_cert_set_cert_cb(s->cert, cb, arg);
2243         }
2244
2245 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2246         {
2247         CERT_PKEY *cpk;
2248         int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
2249         int rsa_enc_export,dh_rsa_export,dh_dsa_export;
2250         int rsa_tmp_export,dh_tmp_export,kl;
2251         unsigned long mask_k,mask_a,emask_k,emask_a;
2252 #ifndef OPENSSL_NO_ECDSA
2253         int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2254 #endif
2255 #ifndef OPENSSL_NO_ECDH
2256         int have_ecdh_tmp, ecdh_ok;
2257 #endif
2258 #ifndef OPENSSL_NO_EC
2259         X509 *x = NULL;
2260         EVP_PKEY *ecc_pkey = NULL;
2261         int signature_nid = 0, pk_nid = 0, md_nid = 0;
2262 #endif
2263         if (c == NULL) return;
2264
2265         kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
2266
2267 #ifndef OPENSSL_NO_RSA
2268         rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2269         rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
2270                 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
2271 #else
2272         rsa_tmp=rsa_tmp_export=0;
2273 #endif
2274 #ifndef OPENSSL_NO_DH
2275         dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2276         dh_tmp_export= !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2277                 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
2278 #else
2279         dh_tmp=dh_tmp_export=0;
2280 #endif
2281
2282 #ifndef OPENSSL_NO_ECDH
2283         have_ecdh_tmp=(c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2284 #endif
2285         cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
2286         rsa_enc= cpk->valid_flags & CERT_PKEY_VALID;
2287         rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2288         cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2289         rsa_sign= cpk->valid_flags & CERT_PKEY_SIGN;
2290         cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2291         dsa_sign= cpk->valid_flags & CERT_PKEY_SIGN;
2292         cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
2293         dh_rsa=  cpk->valid_flags & CERT_PKEY_VALID;
2294         dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2295         cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
2296 /* FIX THIS EAY EAY EAY */
2297         dh_dsa=  cpk->valid_flags & CERT_PKEY_VALID;
2298         dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2299         cpk= &(c->pkeys[SSL_PKEY_ECC]);
2300 #ifndef OPENSSL_NO_EC
2301         have_ecc_cert= cpk->valid_flags & CERT_PKEY_VALID;
2302 #endif
2303         mask_k=0;
2304         mask_a=0;
2305         emask_k=0;
2306         emask_a=0;
2307
2308
2309
2310 #ifdef CIPHER_DEBUG
2311         printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2312                 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
2313                 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
2314 #endif
2315
2316         cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2317         if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2318                 mask_k |= SSL_kGOST;
2319                 mask_a |= SSL_aGOST01;
2320         }
2321         cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2322         if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2323                 mask_k |= SSL_kGOST;
2324                 mask_a |= SSL_aGOST94;
2325         }
2326
2327         if (rsa_enc || (rsa_tmp && rsa_sign))
2328                 mask_k|=SSL_kRSA;
2329         if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2330                 emask_k|=SSL_kRSA;
2331
2332 #if 0
2333         /* The match needs to be both kDHE and aRSA or aDSA, so don't worry */
2334         if (    (dh_tmp || dh_rsa || dh_dsa) &&
2335                 (rsa_enc || rsa_sign || dsa_sign))
2336                 mask_k|=SSL_kDHE;
2337         if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2338                 (rsa_enc || rsa_sign || dsa_sign))
2339                 emask_k|=SSL_kDHE;
2340 #endif
2341
2342         if (dh_tmp_export)
2343                 emask_k|=SSL_kDHE;
2344
2345         if (dh_tmp)
2346                 mask_k|=SSL_kDHE;
2347
2348         if (dh_rsa) mask_k|=SSL_kDHr;
2349         if (dh_rsa_export) emask_k|=SSL_kDHr;
2350
2351         if (dh_dsa) mask_k|=SSL_kDHd;
2352         if (dh_dsa_export) emask_k|=SSL_kDHd;
2353
2354         if (emask_k & (SSL_kDHr|SSL_kDHd))
2355                 mask_a |= SSL_aDH;
2356
2357         if (rsa_enc || rsa_sign)
2358                 {
2359                 mask_a|=SSL_aRSA;
2360                 emask_a|=SSL_aRSA;
2361                 }
2362
2363         if (dsa_sign)
2364                 {
2365                 mask_a|=SSL_aDSS;
2366                 emask_a|=SSL_aDSS;
2367                 }
2368
2369         mask_a|=SSL_aNULL;
2370         emask_a|=SSL_aNULL;
2371
2372 #ifndef OPENSSL_NO_KRB5
2373         mask_k|=SSL_kKRB5;
2374         mask_a|=SSL_aKRB5;
2375         emask_k|=SSL_kKRB5;
2376         emask_a|=SSL_aKRB5;
2377 #endif
2378
2379         /* An ECC certificate may be usable for ECDH and/or
2380          * ECDSA cipher suites depending on the key usage extension.
2381          */
2382 #ifndef OPENSSL_NO_EC
2383         if (have_ecc_cert)
2384                 {
2385                 cpk = &c->pkeys[SSL_PKEY_ECC];
2386                 x = cpk->x509;
2387                 /* This call populates extension flags (ex_flags) */
2388                 X509_check_purpose(x, -1, 0);
2389                 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2390                     (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2391                 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2392                     (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2393                 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2394                         ecdsa_ok = 0;
2395                 ecc_pkey = X509_get_pubkey(x);
2396                 ecc_pkey_size = (ecc_pkey != NULL) ?
2397                     EVP_PKEY_bits(ecc_pkey) : 0;
2398                 EVP_PKEY_free(ecc_pkey);
2399                 if ((x->sig_alg) && (x->sig_alg->algorithm))
2400                         {
2401                         signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2402                         OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2403                         }
2404 #ifndef OPENSSL_NO_ECDH
2405                 if (ecdh_ok)
2406                         {
2407
2408                         if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
2409                                 {
2410                                 mask_k|=SSL_kECDHr;
2411                                 mask_a|=SSL_aECDH;
2412                                 if (ecc_pkey_size <= 163)
2413                                         {
2414                                         emask_k|=SSL_kECDHr;
2415                                         emask_a|=SSL_aECDH;
2416                                         }
2417                                 }
2418
2419                         if (pk_nid == NID_X9_62_id_ecPublicKey)
2420                                 {
2421                                 mask_k|=SSL_kECDHe;
2422                                 mask_a|=SSL_aECDH;
2423                                 if (ecc_pkey_size <= 163)
2424                                         {
2425                                         emask_k|=SSL_kECDHe;
2426                                         emask_a|=SSL_aECDH;
2427                                         }
2428                                 }
2429                         }
2430 #endif
2431 #ifndef OPENSSL_NO_ECDSA
2432                 if (ecdsa_ok)
2433                         {
2434                         mask_a|=SSL_aECDSA;
2435                         emask_a|=SSL_aECDSA;
2436                         }
2437 #endif
2438                 }
2439 #endif
2440
2441 #ifndef OPENSSL_NO_ECDH
2442         if (have_ecdh_tmp)
2443                 {
2444                 mask_k|=SSL_kECDHE;
2445                 emask_k|=SSL_kECDHE;
2446                 }
2447 #endif
2448
2449 #ifndef OPENSSL_NO_PSK
2450         mask_k |= SSL_kPSK;
2451         mask_a |= SSL_aPSK;
2452         emask_k |= SSL_kPSK;
2453         emask_a |= SSL_aPSK;
2454 #endif
2455
2456         c->mask_k=mask_k;
2457         c->mask_a=mask_a;
2458         c->export_mask_k=emask_k;
2459         c->export_mask_a=emask_a;
2460         c->valid=1;
2461         }
2462
2463 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2464 #define ku_reject(x, usage) \
2465         (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2466
2467 #ifndef OPENSSL_NO_EC
2468
2469 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2470         {
2471         unsigned long alg_k, alg_a;
2472         EVP_PKEY *pkey = NULL;
2473         int keysize = 0;
2474         int signature_nid = 0, md_nid = 0, pk_nid = 0;
2475         const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2476
2477         alg_k = cs->algorithm_mkey;
2478         alg_a = cs->algorithm_auth;
2479
2480         if (SSL_C_IS_EXPORT(cs))
2481                 {
2482                 /* ECDH key length in export ciphers must be <= 163 bits */
2483                 pkey = X509_get_pubkey(x);
2484                 if (pkey == NULL) return 0;
2485                 keysize = EVP_PKEY_bits(pkey);
2486                 EVP_PKEY_free(pkey);
2487                 if (keysize > 163) return 0;
2488                 }
2489
2490         /* This call populates the ex_flags field correctly */
2491         X509_check_purpose(x, -1, 0);
2492         if ((x->sig_alg) && (x->sig_alg->algorithm))
2493                 {
2494                 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2495                 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2496                 }
2497         if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2498                 {
2499                 /* key usage, if present, must allow key agreement */
2500                 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2501                         {
2502                         SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2503                         return 0;
2504                         }
2505                 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION)
2506                         {
2507                         /* signature alg must be ECDSA */
2508                         if (pk_nid != NID_X9_62_id_ecPublicKey)
2509                                 {
2510                                 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2511                                 return 0;
2512                                 }
2513                         }
2514                 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION)
2515                         {
2516                         /* signature alg must be RSA */
2517
2518                         if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2519                                 {
2520                                 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2521                                 return 0;
2522                                 }
2523                         }
2524                 }
2525         if (alg_a & SSL_aECDSA)
2526                 {
2527                 /* key usage, if present, must allow signing */
2528                 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2529                         {
2530                         SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2531                         return 0;
2532                         }
2533                 }
2534
2535         return 1;  /* all checks are ok */
2536         }
2537
2538 #endif
2539
2540 static int ssl_get_server_cert_index(const SSL *s)
2541         {
2542         int idx;
2543         idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2544         if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2545                 idx = SSL_PKEY_RSA_SIGN;
2546         if (idx == -1)
2547                 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX,ERR_R_INTERNAL_ERROR);
2548         return idx;
2549         }
2550
2551 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2552         {
2553         CERT *c;
2554         int i;
2555
2556         c = s->cert;
2557         if (!s->s3 || !s->s3->tmp.new_cipher)
2558                 return NULL;
2559         ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2560
2561 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2562         /* Broken protocol test: return last used certificate: which may
2563          * mismatch the one expected.
2564          */
2565         if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2566                 return c->key;
2567 #endif
2568
2569         i = ssl_get_server_cert_index(s);
2570
2571         /* This may or may not be an error. */
2572         if (i < 0)
2573                 return NULL;
2574
2575         /* May be NULL. */
2576         return &c->pkeys[i];
2577         }
2578
2579 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd)
2580         {
2581         unsigned long alg_a;
2582         CERT *c;
2583         int idx = -1;
2584
2585         alg_a = cipher->algorithm_auth;
2586         c=s->cert;
2587
2588 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2589         /* Broken protocol test: use last key: which may
2590          * mismatch the one expected.
2591          */
2592         if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2593                 idx = c->key - c->pkeys;
2594         else
2595 #endif
2596
2597         if ((alg_a & SSL_aDSS) &&
2598                 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2599                 idx = SSL_PKEY_DSA_SIGN;
2600         else if (alg_a & SSL_aRSA)
2601                 {
2602                 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2603                         idx = SSL_PKEY_RSA_SIGN;
2604                 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2605                         idx = SSL_PKEY_RSA_ENC;
2606                 }
2607         else if ((alg_a & SSL_aECDSA) &&
2608                  (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2609                 idx = SSL_PKEY_ECC;
2610         if (idx == -1)
2611                 {
2612                 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2613                 return(NULL);
2614                 }
2615         if (pmd)
2616                 *pmd = c->pkeys[idx].digest;
2617         return c->pkeys[idx].privatekey;
2618         }
2619
2620 #ifndef OPENSSL_NO_TLSEXT
2621 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2622                                    size_t *serverinfo_length)
2623         {
2624         CERT *c = NULL;
2625         int i = 0;
2626         *serverinfo_length = 0;
2627
2628         c = s->cert;
2629         i = ssl_get_server_cert_index(s);
2630
2631         if (i == -1)
2632                 return 0;
2633         if (c->pkeys[i].serverinfo == NULL)
2634                 return 0;
2635
2636         *serverinfo = c->pkeys[i].serverinfo;
2637         *serverinfo_length = c->pkeys[i].serverinfo_length;
2638         return 1;
2639         }
2640 #endif
2641
2642 void ssl_update_cache(SSL *s,int mode)
2643         {
2644         int i;
2645
2646         /* If the session_id_length is 0, we are not supposed to cache it,
2647          * and it would be rather hard to do anyway :-) */
2648         if (s->session->session_id_length == 0) return;
2649
2650         i=s->session_ctx->session_cache_mode;
2651         if ((i & mode) && (!s->hit)
2652                 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2653                     || SSL_CTX_add_session(s->session_ctx,s->session))
2654                 && (s->session_ctx->new_session_cb != NULL))
2655                 {
2656                 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2657                 if (!s->session_ctx->new_session_cb(s,s->session))
2658                         SSL_SESSION_free(s->session);
2659                 }
2660
2661         /* auto flush every 255 connections */
2662         if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2663                 ((i & mode) == mode))
2664                 {
2665                 if (  (((mode & SSL_SESS_CACHE_CLIENT)
2666                         ?s->session_ctx->stats.sess_connect_good
2667                         :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2668                         {
2669                         SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2670                         }
2671                 }
2672         }
2673
2674 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2675         {
2676         return ctx->method;
2677         }
2678
2679 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2680         {
2681         return(s->method);
2682         }
2683
2684 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2685         {
2686         int conn= -1;
2687         int ret=1;
2688
2689         if (s->method != meth)
2690                 {
2691                 if (s->handshake_func != NULL)
2692                         conn=(s->handshake_func == s->method->ssl_connect);
2693
2694                 if (s->method->version == meth->version)
2695                         s->method=meth;
2696                 else
2697                         {
2698                         s->method->ssl_free(s);
2699                         s->method=meth;
2700                         ret=s->method->ssl_new(s);
2701                         }
2702
2703                 if (conn == 1)
2704                         s->handshake_func=meth->ssl_connect;
2705                 else if (conn == 0)
2706                         s->handshake_func=meth->ssl_accept;
2707                 }
2708         return(ret);
2709         }
2710
2711 int SSL_get_error(const SSL *s,int i)
2712         {
2713         int reason;
2714         unsigned long l;
2715         BIO *bio;
2716
2717         if (i > 0) return(SSL_ERROR_NONE);
2718
2719         /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2720          * etc, where we do encode the error */
2721         if ((l=ERR_peek_error()) != 0)
2722                 {
2723                 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2724                         return(SSL_ERROR_SYSCALL);
2725                 else
2726                         return(SSL_ERROR_SSL);
2727                 }
2728
2729         if ((i < 0) && SSL_want_read(s))
2730                 {
2731                 bio=SSL_get_rbio(s);
2732                 if (BIO_should_read(bio))
2733                         return(SSL_ERROR_WANT_READ);
2734                 else if (BIO_should_write(bio))
2735                         /* This one doesn't make too much sense ... We never try
2736                          * to write to the rbio, and an application program where
2737                          * rbio and wbio are separate couldn't even know what it
2738                          * should wait for.
2739                          * However if we ever set s->rwstate incorrectly
2740                          * (so that we have SSL_want_read(s) instead of
2741                          * SSL_want_write(s)) and rbio and wbio *are* the same,
2742                          * this test works around that bug; so it might be safer
2743                          * to keep it. */
2744                         return(SSL_ERROR_WANT_WRITE);
2745                 else if (BIO_should_io_special(bio))
2746                         {
2747                         reason=BIO_get_retry_reason(bio);
2748                         if (reason == BIO_RR_CONNECT)
2749                                 return(SSL_ERROR_WANT_CONNECT);
2750                         else if (reason == BIO_RR_ACCEPT)
2751                                 return(SSL_ERROR_WANT_ACCEPT);
2752                         else
2753                                 return(SSL_ERROR_SYSCALL); /* unknown */
2754                         }
2755                 }
2756
2757         if ((i < 0) && SSL_want_write(s))
2758                 {
2759                 bio=SSL_get_wbio(s);
2760                 if (BIO_should_write(bio))
2761                         return(SSL_ERROR_WANT_WRITE);
2762                 else if (BIO_should_read(bio))
2763                         /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2764                         return(SSL_ERROR_WANT_READ);
2765                 else if (BIO_should_io_special(bio))
2766                         {
2767                         reason=BIO_get_retry_reason(bio);
2768                         if (reason == BIO_RR_CONNECT)
2769                                 return(SSL_ERROR_WANT_CONNECT);
2770                         else if (reason == BIO_RR_ACCEPT)
2771                                 return(SSL_ERROR_WANT_ACCEPT);
2772                         else
2773                                 return(SSL_ERROR_SYSCALL);
2774                         }
2775                 }
2776         if ((i < 0) && SSL_want_x509_lookup(s))
2777                 {
2778                 return(SSL_ERROR_WANT_X509_LOOKUP);
2779                 }
2780
2781         if (i == 0)
2782                 {
2783                 if (s->version == SSL2_VERSION)
2784                         {
2785                         /* assume it is the socket being closed */
2786                         return(SSL_ERROR_ZERO_RETURN);
2787                         }
2788                 else
2789                         {
2790                         if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2791                                 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2792                                 return(SSL_ERROR_ZERO_RETURN);
2793                         }
2794                 }
2795         return(SSL_ERROR_SYSCALL);
2796         }
2797
2798 int SSL_do_handshake(SSL *s)
2799         {
2800         int ret=1;
2801
2802         if (s->handshake_func == NULL)
2803                 {
2804                 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2805                 return(-1);
2806                 }
2807
2808         s->method->ssl_renegotiate_check(s);
2809
2810         if (SSL_in_init(s) || SSL_in_before(s))
2811                 {
2812                 ret=s->handshake_func(s);
2813                 }
2814         return(ret);
2815         }
2816
2817 /* For the next 2 functions, SSL_clear() sets shutdown and so
2818  * one of these calls will reset it */
2819 void SSL_set_accept_state(SSL *s)
2820         {
2821         s->server=1;
2822         s->shutdown=0;
2823         s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2824         s->handshake_func=s->method->ssl_accept;
2825         /* clear the current cipher */
2826         ssl_clear_cipher_ctx(s);
2827         ssl_clear_hash_ctx(&s->read_hash);
2828         ssl_clear_hash_ctx(&s->write_hash);
2829         }
2830
2831 void SSL_set_connect_state(SSL *s)
2832         {
2833         s->server=0;
2834         s->shutdown=0;
2835         s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2836         s->handshake_func=s->method->ssl_connect;
2837         /* clear the current cipher */
2838         ssl_clear_cipher_ctx(s);
2839         ssl_clear_hash_ctx(&s->read_hash);
2840         ssl_clear_hash_ctx(&s->write_hash);
2841         }
2842
2843 int ssl_undefined_function(SSL *s)
2844         {
2845         SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2846         return(0);
2847         }
2848
2849 int ssl_undefined_void_function(void)
2850         {
2851         SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2852         return(0);
2853         }
2854
2855 int ssl_undefined_const_function(const SSL *s)
2856         {
2857         SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2858         return(0);
2859         }
2860
2861 SSL_METHOD *ssl_bad_method(int ver)
2862         {
2863         SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2864         return(NULL);
2865         }
2866
2867 const char *SSL_get_version(const SSL *s)
2868         {
2869         if (s->version == TLS1_2_VERSION)
2870                 return("TLSv1.2");
2871         else if (s->version == TLS1_1_VERSION)
2872                 return("TLSv1.1");
2873         else if (s->version == TLS1_VERSION)
2874                 return("TLSv1");
2875         else if (s->version == SSL3_VERSION)
2876                 return("SSLv3");
2877         else if (s->version == SSL2_VERSION)
2878                 return("SSLv2");
2879         else
2880                 return("unknown");
2881         }
2882
2883 SSL *SSL_dup(SSL *s)
2884         {
2885         STACK_OF(X509_NAME) *sk;
2886         X509_NAME *xn;
2887         SSL *ret;
2888         int i;
2889
2890         if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2891             return(NULL);
2892
2893         ret->version = s->version;
2894         ret->type = s->type;
2895         ret->method = s->method;
2896
2897         if (s->session != NULL)
2898                 {
2899                 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2900                 SSL_copy_session_id(ret,s);
2901                 }
2902         else
2903                 {
2904                 /* No session has been established yet, so we have to expect
2905                  * that s->cert or ret->cert will be changed later --
2906                  * they should not both point to the same object,
2907                  * and thus we can't use SSL_copy_session_id. */
2908
2909                 ret->method->ssl_free(ret);
2910                 ret->method = s->method;
2911                 ret->method->ssl_new(ret);
2912
2913                 if (s->cert != NULL)
2914                         {
2915                         if (ret->cert != NULL)
2916                                 {
2917                                 ssl_cert_free(ret->cert);
2918                                 }
2919                         ret->cert = ssl_cert_dup(s->cert);
2920                         if (ret->cert == NULL)
2921                                 goto err;
2922                         }
2923
2924                 SSL_set_session_id_context(ret,
2925                         s->sid_ctx, s->sid_ctx_length);
2926                 }
2927
2928         ret->options=s->options;
2929         ret->mode=s->mode;
2930         SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2931         SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2932         ret->msg_callback = s->msg_callback;
2933         ret->msg_callback_arg = s->msg_callback_arg;
2934         SSL_set_verify(ret,SSL_get_verify_mode(s),
2935                 SSL_get_verify_callback(s));
2936         SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2937         ret->generate_session_id = s->generate_session_id;
2938
2939         SSL_set_info_callback(ret,SSL_get_info_callback(s));
2940
2941         ret->debug=s->debug;
2942
2943         /* copy app data, a little dangerous perhaps */
2944         if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2945                 goto err;
2946
2947         /* setup rbio, and wbio */
2948         if (s->rbio != NULL)
2949                 {
2950                 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2951                         goto err;
2952                 }
2953         if (s->wbio != NULL)
2954                 {
2955                 if (s->wbio != s->rbio)
2956                         {
2957                         if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2958                                 goto err;
2959                         }
2960                 else
2961                         ret->wbio=ret->rbio;
2962                 }
2963         ret->rwstate = s->rwstate;
2964         ret->in_handshake = s->in_handshake;
2965         ret->handshake_func = s->handshake_func;
2966         ret->server = s->server;
2967         ret->renegotiate = s->renegotiate;
2968         ret->new_session = s->new_session;
2969         ret->quiet_shutdown = s->quiet_shutdown;
2970         ret->shutdown=s->shutdown;
2971         ret->state=s->state; /* SSL_dup does not really work at any state, though */
2972         ret->rstate=s->rstate;
2973         ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2974         ret->hit=s->hit;
2975
2976         X509_VERIFY_PARAM_inherit(ret->param, s->param);
2977
2978         /* dup the cipher_list and cipher_list_by_id stacks */
2979         if (s->cipher_list != NULL)
2980                 {
2981                 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2982                         goto err;
2983                 }
2984         if (s->cipher_list_by_id != NULL)
2985                 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2986                         == NULL)
2987                         goto err;
2988
2989         /* Dup the client_CA list */
2990         if (s->client_CA != NULL)
2991                 {
2992                 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2993                 ret->client_CA=sk;
2994                 for (i=0; i<sk_X509_NAME_num(sk); i++)
2995                         {
2996                         xn=sk_X509_NAME_value(sk,i);
2997                         if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2998                                 {
2999                                 X509_NAME_free(xn);
3000                                 goto err;
3001                                 }
3002                         }
3003                 }
3004
3005         if (0)
3006                 {
3007 err:
3008                 if (ret != NULL) SSL_free(ret);
3009                 ret=NULL;
3010                 }
3011         return(ret);
3012         }
3013
3014 void ssl_clear_cipher_ctx(SSL *s)
3015         {
3016         if (s->enc_read_ctx != NULL)
3017                 {
3018                 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
3019                 OPENSSL_free(s->enc_read_ctx);
3020                 s->enc_read_ctx=NULL;
3021                 }
3022         if (s->enc_write_ctx != NULL)
3023                 {
3024                 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
3025                 OPENSSL_free(s->enc_write_ctx);
3026                 s->enc_write_ctx=NULL;
3027                 }
3028 #ifndef OPENSSL_NO_COMP
3029         if (s->expand != NULL)
3030                 {
3031                 COMP_CTX_free(s->expand);
3032                 s->expand=NULL;
3033                 }
3034         if (s->compress != NULL)
3035                 {
3036                 COMP_CTX_free(s->compress);
3037                 s->compress=NULL;
3038                 }
3039 #endif
3040         }
3041
3042 X509 *SSL_get_certificate(const SSL *s)
3043         {
3044         if (s->cert != NULL)
3045                 return(s->cert->key->x509);
3046         else
3047                 return(NULL);
3048         }
3049
3050 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3051         {
3052         if (s->cert != NULL)
3053                 return(s->cert->key->privatekey);
3054         else
3055                 return(NULL);
3056         }
3057
3058 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3059         {
3060         if (ctx->cert != NULL)
3061                 return ctx->cert->key->x509;
3062         else
3063                 return NULL;
3064         }
3065
3066 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3067         {
3068         if (ctx->cert != NULL)
3069                 return ctx->cert->key->privatekey;
3070         else
3071                 return NULL ;
3072         }
3073
3074 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3075         {
3076         if ((s->session != NULL) && (s->session->cipher != NULL))
3077                 return(s->session->cipher);
3078         return(NULL);
3079         }
3080 #ifdef OPENSSL_NO_COMP
3081 const void *SSL_get_current_compression(SSL *s)
3082         {
3083         return NULL;
3084         }
3085 const void *SSL_get_current_expansion(SSL *s)
3086         {
3087         return NULL;
3088         }
3089 #else
3090
3091 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3092         {
3093         if (s->compress != NULL)
3094                 return(s->compress->meth);
3095         return(NULL);
3096         }
3097
3098 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3099         {
3100         if (s->expand != NULL)
3101                 return(s->expand->meth);
3102         return(NULL);
3103         }
3104 #endif
3105
3106 int ssl_init_wbio_buffer(SSL *s,int push)
3107         {
3108         BIO *bbio;
3109
3110         if (s->bbio == NULL)
3111                 {
3112                 bbio=BIO_new(BIO_f_buffer());
3113                 if (bbio == NULL) return(0);
3114                 s->bbio=bbio;
3115                 }
3116         else
3117                 {
3118                 bbio=s->bbio;
3119                 if (s->bbio == s->wbio)
3120                         s->wbio=BIO_pop(s->wbio);
3121                 }
3122         (void)BIO_reset(bbio);
3123 /*      if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3124         if (!BIO_set_read_buffer_size(bbio,1))
3125                 {
3126                 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
3127                 return(0);
3128                 }
3129         if (push)
3130                 {
3131                 if (s->wbio != bbio)
3132                         s->wbio=BIO_push(bbio,s->wbio);
3133                 }
3134         else
3135                 {
3136                 if (s->wbio == bbio)
3137                         s->wbio=BIO_pop(bbio);
3138                 }
3139         return(1);
3140         }
3141
3142 void ssl_free_wbio_buffer(SSL *s)
3143         {
3144         if (s->bbio == NULL) return;
3145
3146         if (s->bbio == s->wbio)
3147                 {
3148                 /* remove buffering */
3149                 s->wbio=BIO_pop(s->wbio);
3150 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
3151                 assert(s->wbio != NULL);
3152 #endif
3153         }
3154         BIO_free(s->bbio);
3155         s->bbio=NULL;
3156         }
3157
3158 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
3159         {
3160         ctx->quiet_shutdown=mode;
3161         }
3162
3163 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3164         {
3165         return(ctx->quiet_shutdown);
3166         }
3167
3168 void SSL_set_quiet_shutdown(SSL *s,int mode)
3169         {
3170         s->quiet_shutdown=mode;
3171         }
3172
3173 int SSL_get_quiet_shutdown(const SSL *s)
3174         {
3175         return(s->quiet_shutdown);
3176         }
3177
3178 void SSL_set_shutdown(SSL *s,int mode)
3179         {
3180         s->shutdown=mode;
3181         }
3182
3183 int SSL_get_shutdown(const SSL *s)
3184         {
3185         return(s->shutdown);
3186         }
3187
3188 int SSL_version(const SSL *s)
3189         {
3190         return(s->version);
3191         }
3192
3193 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3194         {
3195         return(ssl->ctx);
3196         }
3197
3198 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
3199         {
3200         CERT *ocert = ssl->cert;
3201         if (ssl->ctx == ctx)
3202                 return ssl->ctx;
3203 #ifndef OPENSSL_NO_TLSEXT
3204         if (ctx == NULL)
3205                 ctx = ssl->initial_ctx;
3206 #endif
3207         ssl->cert = ssl_cert_dup(ctx->cert);
3208         if (ocert)
3209                 {
3210                 /* Preserve any already negotiated parameters */
3211                 if (ssl->server)
3212                         {
3213                         ssl->cert->peer_sigalgs = ocert->peer_sigalgs;
3214                         ssl->cert->peer_sigalgslen = ocert->peer_sigalgslen;
3215                         ocert->peer_sigalgs = NULL;
3216                         ssl->cert->ciphers_raw = ocert->ciphers_raw;
3217                         ssl->cert->ciphers_rawlen = ocert->ciphers_rawlen;
3218                         ocert->ciphers_raw = NULL;
3219                         }
3220                 ssl_cert_free(ocert);
3221                 }
3222         CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
3223         if (ssl->ctx != NULL)
3224                 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3225         ssl->ctx = ctx;
3226         return(ssl->ctx);
3227         }
3228
3229 #ifndef OPENSSL_NO_STDIO
3230 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3231         {
3232         return(X509_STORE_set_default_paths(ctx->cert_store));
3233         }
3234
3235 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3236                 const char *CApath)
3237         {
3238         return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
3239         }
3240 #endif
3241
3242 void SSL_set_info_callback(SSL *ssl,
3243         void (*cb)(const SSL *ssl,int type,int val))
3244         {
3245         ssl->info_callback=cb;
3246         }
3247
3248 /* One compiler (Diab DCC) doesn't like argument names in returned
3249    function pointer.  */
3250 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
3251         {
3252         return ssl->info_callback;
3253         }
3254
3255 int SSL_state(const SSL *ssl)
3256         {
3257         return(ssl->state);
3258         }
3259
3260 void SSL_set_state(SSL *ssl, int state)
3261         {
3262         ssl->state = state;
3263         }
3264
3265 void SSL_set_verify_result(SSL *ssl,long arg)
3266         {
3267         ssl->verify_result=arg;
3268         }
3269
3270 long SSL_get_verify_result(const SSL *ssl)
3271         {
3272         return(ssl->verify_result);
3273         }
3274
3275 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3276                          CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3277         {
3278         return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3279                                 new_func, dup_func, free_func);
3280         }
3281
3282 int SSL_set_ex_data(SSL *s,int idx,void *arg)
3283         {
3284         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3285         }
3286
3287 void *SSL_get_ex_data(const SSL *s,int idx)
3288         {
3289         return(CRYPTO_get_ex_data(&s->ex_data,idx));
3290         }
3291
3292 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3293                              CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3294         {
3295         return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3296                                 new_func, dup_func, free_func);
3297         }
3298
3299 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
3300         {
3301         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3302         }
3303
3304 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
3305         {
3306         return(CRYPTO_get_ex_data(&s->ex_data,idx));
3307         }
3308
3309 int ssl_ok(SSL *s)
3310         {
3311         return(1);
3312         }
3313
3314 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3315         {
3316         return(ctx->cert_store);
3317         }
3318
3319 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
3320         {
3321         if (ctx->cert_store != NULL)
3322                 X509_STORE_free(ctx->cert_store);
3323         ctx->cert_store=store;
3324         }
3325
3326 int SSL_want(const SSL *s)
3327         {
3328         return(s->rwstate);
3329         }
3330
3331 /*!
3332  * \brief Set the callback for generating temporary RSA keys.
3333  * \param ctx the SSL context.
3334  * \param cb the callback
3335  */
3336
3337 #ifndef OPENSSL_NO_RSA
3338 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
3339                                                           int is_export,
3340                                                           int keylength))
3341     {
3342     SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3343     }
3344
3345 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
3346                                                   int is_export,
3347                                                   int keylength))
3348     {
3349     SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3350     }
3351 #endif
3352
3353 #ifdef DOXYGEN
3354 /*!
3355  * \brief The RSA temporary key callback function.
3356  * \param ssl the SSL session.
3357  * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3358  * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3359  * of the required key in bits.
3360  * \return the temporary RSA key.
3361  * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3362  */
3363
3364 RSA *cb(SSL *ssl,int is_export,int keylength)
3365     {}
3366 #endif
3367
3368 /*!
3369  * \brief Set the callback for generating temporary DH keys.
3370  * \param ctx the SSL context.
3371  * \param dh the callback
3372  */
3373
3374 #ifndef OPENSSL_NO_DH
3375 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
3376                                                         int keylength))
3377         {
3378         SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3379         }
3380
3381 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
3382                                                 int keylength))
3383         {
3384         SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3385         }
3386 #endif
3387
3388 #ifndef OPENSSL_NO_ECDH
3389 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3390                                                                 int keylength))
3391         {
3392         SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3393         }
3394
3395 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3396                                                         int keylength))
3397         {
3398         SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3399         }
3400 #endif
3401
3402 #ifndef OPENSSL_NO_PSK
3403 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3404         {
3405         if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3406                 {
3407                 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3408                 return 0;
3409                 }
3410         if (ctx->psk_identity_hint != NULL)
3411                 OPENSSL_free(ctx->psk_identity_hint);
3412         if (identity_hint != NULL)
3413                 {
3414                 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3415                 if (ctx->psk_identity_hint == NULL)
3416                         return 0;
3417                 }
3418         else
3419                 ctx->psk_identity_hint = NULL;
3420         return 1;
3421         }
3422
3423 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3424         {
3425         if (s == NULL)
3426                 return 0;
3427
3428         if (s->session == NULL)
3429                 return 1; /* session not created yet, ignored */
3430
3431         if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3432                 {
3433                 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3434                 return 0;
3435                 }
3436         if (s->session->psk_identity_hint != NULL)
3437                 OPENSSL_free(s->session->psk_identity_hint);
3438         if (identity_hint != NULL)
3439                 {
3440                 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3441                 if (s->session->psk_identity_hint == NULL)
3442                         return 0;
3443                 }
3444         else
3445                 s->session->psk_identity_hint = NULL;
3446         return 1;
3447         }
3448
3449 const char *SSL_get_psk_identity_hint(const SSL *s)
3450         {
3451         if (s == NULL || s->session == NULL)
3452                 return NULL;
3453         return(s->session->psk_identity_hint);
3454         }
3455
3456 const char *SSL_get_psk_identity(const SSL *s)
3457         {
3458         if (s == NULL || s->session == NULL)
3459                 return NULL;
3460         return(s->session->psk_identity);
3461         }
3462
3463 void SSL_set_psk_client_callback(SSL *s,
3464     unsigned int (*cb)(SSL *ssl, const char *hint,
3465                        char *identity, unsigned int max_identity_len, unsigned char *psk,
3466                        unsigned int max_psk_len))
3467         {
3468         s->psk_client_callback = cb;
3469         }
3470
3471 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3472     unsigned int (*cb)(SSL *ssl, const char *hint,
3473                        char *identity, unsigned int max_identity_len, unsigned char *psk,
3474                        unsigned int max_psk_len))
3475         {
3476         ctx->psk_client_callback = cb;
3477         }
3478
3479 void SSL_set_psk_server_callback(SSL *s,
3480     unsigned int (*cb)(SSL *ssl, const char *identity,
3481                        unsigned char *psk, unsigned int max_psk_len))
3482         {
3483         s->psk_server_callback = cb;
3484         }
3485
3486 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3487     unsigned int (*cb)(SSL *ssl, const char *identity,
3488                        unsigned char *psk, unsigned int max_psk_len))
3489         {
3490         ctx->psk_server_callback = cb;
3491         }
3492 #endif
3493
3494 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))
3495         {
3496         SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3497         }
3498 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))
3499         {
3500         SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3501         }
3502
3503 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3504         int (*cb)(SSL *ssl, int is_forward_secure))
3505         {
3506         SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3507                 (void (*)(void))cb);
3508         }
3509 void SSL_set_not_resumable_session_callback(SSL *ssl,
3510         int (*cb)(SSL *ssl, int is_forward_secure))
3511         {
3512         SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3513                 (void (*)(void))cb);
3514         }
3515
3516 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3517  * vairable, freeing  EVP_MD_CTX previously stored in that variable, if
3518  * any. If EVP_MD pointer is passed, initializes ctx with this md
3519  * Returns newly allocated ctx;
3520  */
3521
3522 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3523 {
3524         ssl_clear_hash_ctx(hash);
3525         *hash = EVP_MD_CTX_create();
3526         if (md) EVP_DigestInit_ex(*hash,md,NULL);
3527         return *hash;
3528 }
3529 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3530 {
3531
3532         if (*hash) EVP_MD_CTX_destroy(*hash);
3533         *hash=NULL;
3534 }
3535
3536 void SSL_set_debug(SSL *s, int debug)
3537         {
3538         s->debug = debug;
3539         }
3540
3541 int SSL_cache_hit(SSL *s)
3542         {
3543         return s->hit;
3544         }
3545
3546 int SSL_is_server(SSL *s)
3547         {
3548         return s->server;
3549         }
3550
3551 void SSL_set_security_level(SSL *s, int level)
3552         {
3553         s->cert->sec_level = level;
3554         }
3555
3556 int SSL_get_security_level(const SSL *s)
3557         {
3558         return s->cert->sec_level;
3559         }
3560
3561 void SSL_set_security_callback(SSL *s, int (*cb)(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex))
3562         {
3563         s->cert->sec_cb = cb;
3564         }
3565
3566 int (*SSL_get_security_callback(const SSL *s))(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex)
3567         {
3568         return s->cert->sec_cb;
3569         }
3570
3571 void SSL_set0_security_ex_data(SSL *s, void *ex)
3572         {
3573         s->cert->sec_ex = ex;
3574         }
3575
3576 void *SSL_get0_security_ex_data(const SSL *s)
3577         {
3578         return s->cert->sec_ex;
3579         }
3580
3581 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3582         {
3583         ctx->cert->sec_level = level;
3584         }
3585
3586 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3587         {
3588         return ctx->cert->sec_level;
3589         }
3590
3591 void SSL_CTX_set_security_callback(SSL_CTX *ctx, int (*cb)(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex))
3592         {
3593         ctx->cert->sec_cb = cb;
3594         }
3595
3596 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx))(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex)
3597         {
3598         return ctx->cert->sec_cb;
3599         }
3600
3601 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3602         {
3603         ctx->cert->sec_ex = ex;
3604         }
3605
3606 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3607         {
3608         return ctx->cert->sec_ex;
3609         }
3610
3611 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3612 #include "../crypto/bio/bss_file.c"
3613 #endif
3614
3615 IMPLEMENT_STACK_OF(SSL_CIPHER)
3616 IMPLEMENT_STACK_OF(SSL_COMP)
3617 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
3618                                     ssl_cipher_id);