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