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         };
 181
 182 int SSL_clear(SSL *s)
 183         {
 184
 185         if (s->method == NULL)
 186                 {
 187                 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
 188                 return(0);
 189                 }
 190
 191         if (ssl_clear_bad_session(s))
 192                 {
 193                 SSL_SESSION_free(s->session);
 194                 s->session=NULL;
 195                 }
 196
 197         s->error=0;
 198         s->hit=0;
 199         s->shutdown=0;
 200
 201 #if 0 /* Disabled since version 1.10 of this file (early return not
 202        * needed because SSL_clear is not called when doing renegotiation) */
 203         /* This is set if we are doing dynamic renegotiation so keep
 204          * the old cipher.  It is sort of a SSL_clear_lite :-) */
 205         if (s->new_session) return(1);
 206 #else
 207         if (s->new_session)
 208                 {
 209                 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
 210                 return 0;
 211                 }
 212 #endif
 213
 214         s->type=0;
 215
 216         s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
 217
 218         s->version=s->method->version;
 219         s->client_version=s->version;
 220         s->rwstate=SSL_NOTHING;
 221         s->rstate=SSL_ST_READ_HEADER;
 222 #if 0
 223         s->read_ahead=s->ctx->read_ahead;
 224 #endif
 225
 226         if (s->init_buf != NULL)
 227                 {
 228                 BUF_MEM_free(s->init_buf);
 229                 s->init_buf=NULL;
 230                 }
 231
 232         ssl_clear_cipher_ctx(s);
 233         ssl_clear_hash_ctx(&s->read_hash);
 234         ssl_clear_hash_ctx(&s->write_hash);
 235
 236         s->first_packet=0;
 237
 238 #if 1
 239         /* Check to see if we were changed into a different method, if
 240          * so, revert back if we are not doing session-id reuse. */
 241         if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
 242                 {
 243                 s->method->ssl_free(s);
 244                 s->method=s->ctx->method;
 245                 if (!s->method->ssl_new(s))
 246                         return(0);
 247                 }
 248         else
 249 #endif
 250                 s->method->ssl_clear(s);
 251         return(1);
 252         }
 253
 254 /** Used to change an SSL_CTXs default SSL method type */
 255 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
 256         {
 257         STACK_OF(SSL_CIPHER) *sk;
 258
 259         ctx->method=meth;
 260
 261         sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
 262                 &(ctx->cipher_list_by_id),
 263                 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
 264         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
 265                 {
 266                 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
 267                 return(0);
 268                 }
 269         return(1);
 270         }
 271
 272 SSL *SSL_new(SSL_CTX *ctx)
 273         {
 274         SSL *s;
 275
 276         if (ctx == NULL)
 277                 {
 278                 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
 279                 return(NULL);
 280                 }
 281         if (ctx->method == NULL)
 282                 {
 283                 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
 284                 return(NULL);
 285                 }
 286
 287         s=(SSL *)OPENSSL_malloc(sizeof(SSL));
 288         if (s == NULL) goto err;
 289         memset(s,0,sizeof(SSL));
 290
 291 #ifndef OPENSSL_NO_KRB5
 292         s->kssl_ctx = kssl_ctx_new();
 293 #endif  /* OPENSSL_NO_KRB5 */
 294
 295         s->options=ctx->options;
 296         s->mode=ctx->mode;
 297         s->max_cert_list=ctx->max_cert_list;
 298
 299         if (ctx->cert != NULL)
 300                 {
 301                 /* Earlier library versions used to copy the pointer to
 302                  * the CERT, not its contents; only when setting new
 303                  * parameters for the per-SSL copy, ssl_cert_new would be
 304                  * called (and the direct reference to the per-SSL_CTX
 305                  * settings would be lost, but those still were indirectly
 306                  * accessed for various purposes, and for that reason they
 307                  * used to be known as s->ctx->default_cert).
 308                  * Now we don't look at the SSL_CTX's CERT after having
 309                  * duplicated it once. */
 310
 311                 s->cert = ssl_cert_dup(ctx->cert);
 312                 if (s->cert == NULL)
 313                         goto err;
 314                 }
 315         else
 316                 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
 317
 318         s->read_ahead=ctx->read_ahead;
 319         s->msg_callback=ctx->msg_callback;
 320         s->msg_callback_arg=ctx->msg_callback_arg;
 321         s->verify_mode=ctx->verify_mode;
 322 #if 0
 323         s->verify_depth=ctx->verify_depth;
 324 #endif
 325         s->sid_ctx_length=ctx->sid_ctx_length;
 326         OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
 327         memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
 328         s->verify_callback=ctx->default_verify_callback;
 329         s->generate_session_id=ctx->generate_session_id;
 330
 331         s->param = X509_VERIFY_PARAM_new();
 332         if (!s->param)
 333                 goto err;
 334         X509_VERIFY_PARAM_inherit(s->param, ctx->param);
 335 #if 0
 336         s->purpose = ctx->purpose;
 337         s->trust = ctx->trust;
 338 #endif
 339         s->quiet_shutdown=ctx->quiet_shutdown;
 340         s->max_send_fragment = ctx->max_send_fragment;
 341
 342         CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
 343         s->ctx=ctx;
 344 #ifndef OPENSSL_NO_TLSEXT
 345         s->tlsext_debug_cb = 0;
 346         s->tlsext_debug_arg = NULL;
 347         s->tlsext_ticket_expected = 0;
 348         s->tlsext_status_type = -1;
 349         s->tlsext_status_expected = 0;
 350         s->tlsext_ocsp_ids = NULL;
 351         s->tlsext_ocsp_exts = NULL;
 352         s->tlsext_ocsp_resp = NULL;
 353         s->tlsext_ocsp_resplen = -1;
 354         CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
 355         s->initial_ctx=ctx;
 356 #endif
 357
 358         s->verify_result=X509_V_OK;
 359
 360         s->method=ctx->method;
 361
 362         if (!s->method->ssl_new(s))
 363                 goto err;
 364
 365         s->references=1;
 366         s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
 367
 368         SSL_clear(s);
 369
 370         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 371
 372 #ifndef OPENSSL_NO_PSK
 373         s->psk_client_callback=ctx->psk_client_callback;
 374         s->psk_server_callback=ctx->psk_server_callback;
 375 #endif
 376
 377         return(s);
 378 err:
 379         if (s != NULL)
 380                 {
 381                 if (s->cert != NULL)
 382                         ssl_cert_free(s->cert);
 383                 if (s->ctx != NULL)
 384                         SSL_CTX_free(s->ctx); /* decrement reference count */
 385                 OPENSSL_free(s);
 386                 }
 387         SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
 388         return(NULL);
 389         }
 390
 391 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
 392                                    unsigned int sid_ctx_len)
 393     {
 394     if(sid_ctx_len > sizeof ctx->sid_ctx)
 395         {
 396         SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
 397         return 0;
 398         }
 399     ctx->sid_ctx_length=sid_ctx_len;
 400     memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
 401
 402     return 1;
 403     }
 404
 405 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
 406                                unsigned int sid_ctx_len)
 407     {
 408     if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
 409         {
 410         SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
 411         return 0;
 412         }
 413     ssl->sid_ctx_length=sid_ctx_len;
 414     memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
 415
 416     return 1;
 417     }
 418
 419 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
 420         {
 421         CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
 422         ctx->generate_session_id = cb;
 423         CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
 424         return 1;
 425         }
 426
 427 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
 428         {
 429         CRYPTO_w_lock(CRYPTO_LOCK_SSL);
 430         ssl->generate_session_id = cb;
 431         CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
 432         return 1;
 433         }
 434
 435 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
 436                                 unsigned int id_len)
 437         {
 438         /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
 439          * we can "construct" a session to give us the desired check - ie. to
 440          * find if there's a session in the hash table that would conflict with
 441          * any new session built out of this id/id_len and the ssl_version in
 442          * use by this SSL. */
 443         SSL_SESSION r, *p;
 444
 445         if(id_len > sizeof r.session_id)
 446                 return 0;
 447
 448         r.ssl_version = ssl->version;
 449         r.session_id_length = id_len;
 450         memcpy(r.session_id, id, id_len);
 451         /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
 452          * callback is calling us to check the uniqueness of a shorter ID, it
 453          * must be compared as a padded-out ID because that is what it will be
 454          * converted to when the callback has finished choosing it. */
 455         if((r.ssl_version == SSL2_VERSION) &&
 456                         (id_len < SSL2_SSL_SESSION_ID_LENGTH))
 457                 {
 458                 memset(r.session_id + id_len, 0,
 459                         SSL2_SSL_SESSION_ID_LENGTH - id_len);
 460                 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
 461                 }
 462
 463         CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
 464         p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
 465         CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
 466         return (p != NULL);
 467         }
 468
 469 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
 470         {
 471         return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
 472         }
 473
 474 int SSL_set_purpose(SSL *s, int purpose)
 475         {
 476         return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
 477         }
 478
 479 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
 480         {
 481         return X509_VERIFY_PARAM_set_trust(s->param, trust);
 482         }
 483
 484 int SSL_set_trust(SSL *s, int trust)
 485         {
 486         return X509_VERIFY_PARAM_set_trust(s->param, trust);
 487         }
 488
 489 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
 490         {
 491         return X509_VERIFY_PARAM_set1(ctx->param, vpm);
 492         }
 493
 494 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
 495         {
 496         return X509_VERIFY_PARAM_set1(ssl->param, vpm);
 497         }
 498
 499 void SSL_free(SSL *s)
 500         {
 501         int i;
 502
 503         if(s == NULL)
 504             return;
 505
 506         i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
 507 #ifdef REF_PRINT
 508         REF_PRINT("SSL",s);
 509 #endif
 510         if (i > 0) return;
 511 #ifdef REF_CHECK
 512         if (i < 0)
 513                 {
 514                 fprintf(stderr,"SSL_free, bad reference count\n");
 515                 abort(); /* ok */
 516                 }
 517 #endif
 518
 519         if (s->param)
 520                 X509_VERIFY_PARAM_free(s->param);
 521
 522         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 523
 524         if (s->bbio != NULL)
 525                 {
 526                 /* If the buffering BIO is in place, pop it off */
 527                 if (s->bbio == s->wbio)
 528                         {
 529                         s->wbio=BIO_pop(s->wbio);
 530                         }
 531                 BIO_free(s->bbio);
 532                 s->bbio=NULL;
 533                 }
 534         if (s->rbio != NULL)
 535                 BIO_free_all(s->rbio);
 536         if ((s->wbio != NULL) && (s->wbio != s->rbio))
 537                 BIO_free_all(s->wbio);
 538
 539         if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
 540
 541         /* add extra stuff */
 542         if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
 543         if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
 544
 545         /* Make the next call work :-) */
 546         if (s->session != NULL)
 547                 {
 548                 ssl_clear_bad_session(s);
 549                 SSL_SESSION_free(s->session);
 550                 }
 551
 552         ssl_clear_cipher_ctx(s);
 553         ssl_clear_hash_ctx(&s->read_hash);
 554         ssl_clear_hash_ctx(&s->write_hash);
 555
 556         if (s->cert != NULL) ssl_cert_free(s->cert);
 557         /* Free up if allocated */
 558
 559         if (s->ctx) SSL_CTX_free(s->ctx);
 560 #ifndef OPENSSL_NO_TLSEXT
 561         if (s->tlsext_hostname)
 562                 OPENSSL_free(s->tlsext_hostname);
 563         if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
 564 #ifndef OPENSSL_NO_EC
 565         if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
 566         if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
 567 #endif /* OPENSSL_NO_EC */
 568         if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
 569         if (s->tlsext_ocsp_exts)
 570                 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
 571                                                 X509_EXTENSION_free);
 572         if (s->tlsext_ocsp_ids)
 573                 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
 574         if (s->tlsext_ocsp_resp)
 575                 OPENSSL_free(s->tlsext_ocsp_resp);
 576 #endif
 577
 578         if (s->client_CA != NULL)
 579                 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
 580
 581         if (s->method != NULL) s->method->ssl_free(s);
 582
 583 #ifndef OPENSSL_NO_KRB5
 584         if (s->kssl_ctx != NULL)
 585                 kssl_ctx_free(s->kssl_ctx);
 586 #endif  /* OPENSSL_NO_KRB5 */
 587
 588         OPENSSL_free(s);
 589         }
 590
 591 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
 592         {
 593         /* If the output buffering BIO is still in place, remove it
 594          */
 595         if (s->bbio != NULL)
 596                 {
 597                 if (s->wbio == s->bbio)
 598                         {
 599                         s->wbio=s->wbio->next_bio;
 600                         s->bbio->next_bio=NULL;
 601                         }
 602                 }
 603         if ((s->rbio != NULL) && (s->rbio != rbio))
 604                 BIO_free_all(s->rbio);
 605         if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
 606                 BIO_free_all(s->wbio);
 607         s->rbio=rbio;
 608         s->wbio=wbio;
 609         }
 610
 611 BIO *SSL_get_rbio(const SSL *s)
 612         { return(s->rbio); }
 613
 614 BIO *SSL_get_wbio(const SSL *s)
 615         { return(s->wbio); }
 616
 617 int SSL_get_fd(const SSL *s)
 618         {
 619         return(SSL_get_rfd(s));
 620         }
 621
 622 int SSL_get_rfd(const SSL *s)
 623         {
 624         int ret= -1;
 625         BIO *b,*r;
 626
 627         b=SSL_get_rbio(s);
 628         r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
 629         if (r != NULL)
 630                 BIO_get_fd(r,&ret);
 631         return(ret);
 632         }
 633
 634 int SSL_get_wfd(const SSL *s)
 635         {
 636         int ret= -1;
 637         BIO *b,*r;
 638
 639         b=SSL_get_wbio(s);
 640         r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
 641         if (r != NULL)
 642                 BIO_get_fd(r,&ret);
 643         return(ret);
 644         }
 645
 646 #ifndef OPENSSL_NO_SOCK
 647 int SSL_set_fd(SSL *s,int fd)
 648         {
 649         int ret=0;
 650         BIO *bio=NULL;
 651
 652         bio=BIO_new(BIO_s_socket());
 653
 654         if (bio == NULL)
 655                 {
 656                 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
 657                 goto err;
 658                 }
 659         BIO_set_fd(bio,fd,BIO_NOCLOSE);
 660         SSL_set_bio(s,bio,bio);
 661         ret=1;
 662 err:
 663         return(ret);
 664         }
 665
 666 int SSL_set_wfd(SSL *s,int fd)
 667         {
 668         int ret=0;
 669         BIO *bio=NULL;
 670
 671         if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
 672                 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
 673                 {
 674                 bio=BIO_new(BIO_s_socket());
 675
 676                 if (bio == NULL)
 677                         { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
 678                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 679                 SSL_set_bio(s,SSL_get_rbio(s),bio);
 680                 }
 681         else
 682                 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
 683         ret=1;
 684 err:
 685         return(ret);
 686         }
 687
 688 int SSL_set_rfd(SSL *s,int fd)
 689         {
 690         int ret=0;
 691         BIO *bio=NULL;
 692
 693         if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
 694                 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
 695                 {
 696                 bio=BIO_new(BIO_s_socket());
 697
 698                 if (bio == NULL)
 699                         {
 700                         SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
 701                         goto err;
 702                         }
 703                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 704                 SSL_set_bio(s,bio,SSL_get_wbio(s));
 705                 }
 706         else
 707                 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
 708         ret=1;
 709 err:
 710         return(ret);
 711         }
 712 #endif
 713
 714
 715 /* return length of latest Finished message we sent, copy to 'buf' */
 716 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
 717         {
 718         size_t ret = 0;
 719
 720         if (s->s3 != NULL)
 721                 {
 722                 ret = s->s3->tmp.finish_md_len;
 723                 if (count > ret)
 724                         count = ret;
 725                 memcpy(buf, s->s3->tmp.finish_md, count);
 726                 }
 727         return ret;
 728         }
 729
 730 /* return length of latest Finished message we expected, copy to 'buf' */
 731 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
 732         {
 733         size_t ret = 0;
 734
 735         if (s->s3 != NULL)
 736                 {
 737                 ret = s->s3->tmp.peer_finish_md_len;
 738                 if (count > ret)
 739                         count = ret;
 740                 memcpy(buf, s->s3->tmp.peer_finish_md, count);
 741                 }
 742         return ret;
 743         }
 744
 745
 746 int SSL_get_verify_mode(const SSL *s)
 747         {
 748         return(s->verify_mode);
 749         }
 750
 751 int SSL_get_verify_depth(const SSL *s)
 752         {
 753         return X509_VERIFY_PARAM_get_depth(s->param);
 754         }
 755
 756 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
 757         {
 758         return(s->verify_callback);
 759         }
 760
 761 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
 762         {
 763         return(ctx->verify_mode);
 764         }
 765
 766 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
 767         {
 768         return X509_VERIFY_PARAM_get_depth(ctx->param);
 769         }
 770
 771 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
 772         {
 773         return(ctx->default_verify_callback);
 774         }
 775
 776 void SSL_set_verify(SSL *s,int mode,
 777                     int (*callback)(int ok,X509_STORE_CTX *ctx))
 778         {
 779         s->verify_mode=mode;
 780         if (callback != NULL)
 781                 s->verify_callback=callback;
 782         }
 783
 784 void SSL_set_verify_depth(SSL *s,int depth)
 785         {
 786         X509_VERIFY_PARAM_set_depth(s->param, depth);
 787         }
 788
 789 void SSL_set_read_ahead(SSL *s,int yes)
 790         {
 791         s->read_ahead=yes;
 792         }
 793
 794 int SSL_get_read_ahead(const SSL *s)
 795         {
 796         return(s->read_ahead);
 797         }
 798
 799 int SSL_pending(const SSL *s)
 800         {
 801         /* SSL_pending cannot work properly if read-ahead is enabled
 802          * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
 803          * and it is impossible to fix since SSL_pending cannot report
 804          * errors that may be observed while scanning the new data.
 805          * (Note that SSL_pending() is often used as a boolean value,
 806          * so we'd better not return -1.)
 807          */
 808         return(s->method->ssl_pending(s));
 809         }
 810
 811 X509 *SSL_get_peer_certificate(const SSL *s)
 812         {
 813         X509 *r;
 814
 815         if ((s == NULL) || (s->session == NULL))
 816                 r=NULL;
 817         else
 818                 r=s->session->peer;
 819
 820         if (r == NULL) return(r);
 821
 822         CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
 823
 824         return(r);
 825         }
 826
 827 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
 828         {
 829         STACK_OF(X509) *r;
 830
 831         if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
 832                 r=NULL;
 833         else
 834                 r=s->session->sess_cert->cert_chain;
 835
 836         /* If we are a client, cert_chain includes the peer's own
 837          * certificate; if we are a server, it does not. */
 838
 839         return(r);
 840         }
 841
 842 /* Now in theory, since the calling process own 't' it should be safe to
 843  * modify.  We need to be able to read f without being hassled */
 844 void SSL_copy_session_id(SSL *t,const SSL *f)
 845         {
 846         CERT *tmp;
 847
 848         /* Do we need to to SSL locking? */
 849         SSL_set_session(t,SSL_get_session(f));
 850
 851         /* what if we are setup as SSLv2 but want to talk SSLv3 or
 852          * vice-versa */
 853         if (t->method != f->method)
 854                 {
 855                 t->method->ssl_free(t); /* cleanup current */
 856                 t->method=f->method;    /* change method */
 857                 t->method->ssl_new(t);  /* setup new */
 858                 }
 859
 860         tmp=t->cert;
 861         if (f->cert != NULL)
 862                 {
 863                 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
 864                 t->cert=f->cert;
 865                 }
 866         else
 867                 t->cert=NULL;
 868         if (tmp != NULL) ssl_cert_free(tmp);
 869         SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
 870         }
 871
 872 /* Fix this so it checks all the valid key/cert options */
 873 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
 874         {
 875         if (    (ctx == NULL) ||
 876                 (ctx->cert == NULL) ||
 877                 (ctx->cert->key->x509 == NULL))
 878                 {
 879                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 880                 return(0);
 881                 }
 882         if      (ctx->cert->key->privatekey == NULL)
 883                 {
 884                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 885                 return(0);
 886                 }
 887         return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
 888         }
 889
 890 /* Fix this function so that it takes an optional type parameter */
 891 int SSL_check_private_key(const SSL *ssl)
 892         {
 893         if (ssl == NULL)
 894                 {
 895                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
 896                 return(0);
 897                 }
 898         if (ssl->cert == NULL)
 899                 {
 900                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 901                 return 0;
 902                 }
 903         if (ssl->cert->key->x509 == NULL)
 904                 {
 905                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 906                 return(0);
 907                 }
 908         if (ssl->cert->key->privatekey == NULL)
 909                 {
 910                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 911                 return(0);
 912                 }
 913         return(X509_check_private_key(ssl->cert->key->x509,
 914                 ssl->cert->key->privatekey));
 915         }
 916
 917 int SSL_accept(SSL *s)
 918         {
 919         if (s->handshake_func == 0)
 920                 /* Not properly initialized yet */
 921                 SSL_set_accept_state(s);
 922
 923         return(s->method->ssl_accept(s));
 924         }
 925
 926 int SSL_connect(SSL *s)
 927         {
 928         if (s->handshake_func == 0)
 929                 /* Not properly initialized yet */
 930                 SSL_set_connect_state(s);
 931
 932         return(s->method->ssl_connect(s));
 933         }
 934
 935 long SSL_get_default_timeout(const SSL *s)
 936         {
 937         return(s->method->get_timeout());
 938         }
 939
 940 int SSL_read(SSL *s,void *buf,int num)
 941         {
 942         if (s->handshake_func == 0)
 943                 {
 944                 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
 945                 return -1;
 946                 }
 947
 948         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 949                 {
 950                 s->rwstate=SSL_NOTHING;
 951                 return(0);
 952                 }
 953         return(s->method->ssl_read(s,buf,num));
 954         }
 955
 956 int SSL_peek(SSL *s,void *buf,int num)
 957         {
 958         if (s->handshake_func == 0)
 959                 {
 960                 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
 961                 return -1;
 962                 }
 963
 964         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 965                 {
 966                 return(0);
 967                 }
 968         return(s->method->ssl_peek(s,buf,num));
 969         }
 970
 971 int SSL_write(SSL *s,const void *buf,int num)
 972         {
 973         if (s->handshake_func == 0)
 974                 {
 975                 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
 976                 return -1;
 977                 }
 978
 979         if (s->shutdown & SSL_SENT_SHUTDOWN)
 980                 {
 981                 s->rwstate=SSL_NOTHING;
 982                 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
 983                 return(-1);
 984                 }
 985         return(s->method->ssl_write(s,buf,num));
 986         }
 987
 988 int SSL_shutdown(SSL *s)
 989         {
 990         /* Note that this function behaves differently from what one might
 991          * expect.  Return values are 0 for no success (yet),
 992          * 1 for success; but calling it once is usually not enough,
 993          * even if blocking I/O is used (see ssl3_shutdown).
 994          */
 995
 996         if (s->handshake_func == 0)
 997                 {
 998                 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
 999                 return -1;
1000                 }
1001
1002         if ((s != NULL) && !SSL_in_init(s))
1003                 return(s->method->ssl_shutdown(s));
1004         else
1005                 return(1);
1006         }
1007
1008 int SSL_renegotiate(SSL *s)
1009         {
1010         if (s->new_session == 0)
1011                 {
1012                 s->new_session=1;
1013                 }
1014         return(s->method->ssl_renegotiate(s));
1015         }
1016
1017 int SSL_renegotiate_pending(SSL *s)
1018         {
1019         /* becomes true when negotiation is requested;
1020          * false again once a handshake has finished */
1021         return (s->new_session != 0);
1022         }
1023
1024 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1025         {
1026         long l;
1027
1028         switch (cmd)
1029                 {
1030         case SSL_CTRL_GET_READ_AHEAD:
1031                 return(s->read_ahead);
1032         case SSL_CTRL_SET_READ_AHEAD:
1033                 l=s->read_ahead;
1034                 s->read_ahead=larg;
1035                 return(l);
1036
1037         case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1038                 s->msg_callback_arg = parg;
1039                 return 1;
1040
1041         case SSL_CTRL_OPTIONS:
1042                 return(s->options|=larg);
1043         case SSL_CTRL_MODE:
1044                 return(s->mode|=larg);
1045         case SSL_CTRL_GET_MAX_CERT_LIST:
1046                 return(s->max_cert_list);
1047         case SSL_CTRL_SET_MAX_CERT_LIST:
1048                 l=s->max_cert_list;
1049                 s->max_cert_list=larg;
1050                 return(l);
1051         case SSL_CTRL_SET_MTU:
1052                 if (SSL_version(s) == DTLS1_VERSION ||
1053                     SSL_version(s) == DTLS1_BAD_VER)
1054                         {
1055                         s->d1->mtu = larg;
1056                         return larg;
1057                         }
1058                 return 0;
1059         case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1060                 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1061                         return 0;
1062                 s->max_send_fragment = larg;
1063                 return 1;
1064         default:
1065                 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1066                 }
1067         }
1068
1069 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1070         {
1071         switch(cmd)
1072                 {
1073         case SSL_CTRL_SET_MSG_CALLBACK:
1074                 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1075                 return 1;
1076
1077         default:
1078                 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1079                 }
1080         }
1081
1082 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1083         {
1084         return ctx->sessions;
1085         }
1086
1087 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1088         {
1089         long l;
1090
1091         switch (cmd)
1092                 {
1093         case SSL_CTRL_GET_READ_AHEAD:
1094                 return(ctx->read_ahead);
1095         case SSL_CTRL_SET_READ_AHEAD:
1096                 l=ctx->read_ahead;
1097                 ctx->read_ahead=larg;
1098                 return(l);
1099
1100         case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1101                 ctx->msg_callback_arg = parg;
1102                 return 1;
1103
1104         case SSL_CTRL_GET_MAX_CERT_LIST:
1105                 return(ctx->max_cert_list);
1106         case SSL_CTRL_SET_MAX_CERT_LIST:
1107                 l=ctx->max_cert_list;
1108                 ctx->max_cert_list=larg;
1109                 return(l);
1110
1111         case SSL_CTRL_SET_SESS_CACHE_SIZE:
1112                 l=ctx->session_cache_size;
1113                 ctx->session_cache_size=larg;
1114                 return(l);
1115         case SSL_CTRL_GET_SESS_CACHE_SIZE:
1116                 return(ctx->session_cache_size);
1117         case SSL_CTRL_SET_SESS_CACHE_MODE:
1118                 l=ctx->session_cache_mode;
1119                 ctx->session_cache_mode=larg;
1120                 return(l);
1121         case SSL_CTRL_GET_SESS_CACHE_MODE:
1122                 return(ctx->session_cache_mode);
1123
1124         case SSL_CTRL_SESS_NUMBER:
1125                 return(lh_SSL_SESSION_num_items(ctx->sessions));
1126         case SSL_CTRL_SESS_CONNECT:
1127                 return(ctx->stats.sess_connect);
1128         case SSL_CTRL_SESS_CONNECT_GOOD:
1129                 return(ctx->stats.sess_connect_good);
1130         case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1131                 return(ctx->stats.sess_connect_renegotiate);
1132         case SSL_CTRL_SESS_ACCEPT:
1133                 return(ctx->stats.sess_accept);
1134         case SSL_CTRL_SESS_ACCEPT_GOOD:
1135                 return(ctx->stats.sess_accept_good);
1136         case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1137                 return(ctx->stats.sess_accept_renegotiate);
1138         case SSL_CTRL_SESS_HIT:
1139                 return(ctx->stats.sess_hit);
1140         case SSL_CTRL_SESS_CB_HIT:
1141                 return(ctx->stats.sess_cb_hit);
1142         case SSL_CTRL_SESS_MISSES:
1143                 return(ctx->stats.sess_miss);
1144         case SSL_CTRL_SESS_TIMEOUTS:
1145                 return(ctx->stats.sess_timeout);
1146         case SSL_CTRL_SESS_CACHE_FULL:
1147                 return(ctx->stats.sess_cache_full);
1148         case SSL_CTRL_OPTIONS:
1149                 return(ctx->options|=larg);
1150         case SSL_CTRL_MODE:
1151                 return(ctx->mode|=larg);
1152         case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1153                 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1154                         return 0;
1155                 ctx->max_send_fragment = larg;
1156                 return 1;
1157         default:
1158                 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1159                 }
1160         }
1161
1162 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1163         {
1164         switch(cmd)
1165                 {
1166         case SSL_CTRL_SET_MSG_CALLBACK:
1167                 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1168                 return 1;
1169
1170         default:
1171                 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1172                 }
1173         }
1174
1175 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1176         {
1177         long l;
1178
1179         l=a->id-b->id;
1180         if (l == 0L)
1181                 return(0);
1182         else
1183                 return((l > 0)?1:-1);
1184         }
1185
1186 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1187                         const SSL_CIPHER * const *bp)
1188         {
1189         long l;
1190
1191         l=(*ap)->id-(*bp)->id;
1192         if (l == 0L)
1193                 return(0);
1194         else
1195                 return((l > 0)?1:-1);
1196         }
1197
1198 /** return a STACK of the ciphers available for the SSL and in order of
1199  * preference */
1200 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1201         {
1202         if (s != NULL)
1203                 {
1204                 if (s->cipher_list != NULL)
1205                         {
1206                         return(s->cipher_list);
1207                         }
1208                 else if ((s->ctx != NULL) &&
1209                         (s->ctx->cipher_list != NULL))
1210                         {
1211                         return(s->ctx->cipher_list);
1212                         }
1213                 }
1214         return(NULL);
1215         }
1216
1217 /** return a STACK of the ciphers available for the SSL and in order of
1218  * algorithm id */
1219 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1220         {
1221         if (s != NULL)
1222                 {
1223                 if (s->cipher_list_by_id != NULL)
1224                         {
1225                         return(s->cipher_list_by_id);
1226                         }
1227                 else if ((s->ctx != NULL) &&
1228                         (s->ctx->cipher_list_by_id != NULL))
1229                         {
1230                         return(s->ctx->cipher_list_by_id);
1231                         }
1232                 }
1233         return(NULL);
1234         }
1235
1236 /** The old interface to get the same thing as SSL_get_ciphers() */
1237 const char *SSL_get_cipher_list(const SSL *s,int n)
1238         {
1239         SSL_CIPHER *c;
1240         STACK_OF(SSL_CIPHER) *sk;
1241
1242         if (s == NULL) return(NULL);
1243         sk=SSL_get_ciphers(s);
1244         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1245                 return(NULL);
1246         c=sk_SSL_CIPHER_value(sk,n);
1247         if (c == NULL) return(NULL);
1248         return(c->name);
1249         }
1250
1251 /** specify the ciphers to be used by default by the SSL_CTX */
1252 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1253         {
1254         STACK_OF(SSL_CIPHER) *sk;
1255
1256         sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1257                 &ctx->cipher_list_by_id,str);
1258         /* ssl_create_cipher_list may return an empty stack if it
1259          * was unable to find a cipher matching the given rule string
1260          * (for example if the rule string specifies a cipher which
1261          * has been disabled). This is not an error as far as
1262          * ssl_create_cipher_list is concerned, and hence
1263          * ctx->cipher_list and ctx->cipher_list_by_id has been
1264          * updated. */
1265         if (sk == NULL)
1266                 return 0;
1267         else if (sk_SSL_CIPHER_num(sk) == 0)
1268                 {
1269                 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1270                 return 0;
1271                 }
1272         return 1;
1273         }
1274
1275 /** specify the ciphers to be used by the SSL */
1276 int SSL_set_cipher_list(SSL *s,const char *str)
1277         {
1278         STACK_OF(SSL_CIPHER) *sk;
1279
1280         sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1281                 &s->cipher_list_by_id,str);
1282         /* see comment in SSL_CTX_set_cipher_list */
1283         if (sk == NULL)
1284                 return 0;
1285         else if (sk_SSL_CIPHER_num(sk) == 0)
1286                 {
1287                 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1288                 return 0;
1289                 }
1290         return 1;
1291         }
1292
1293 /* works well for SSLv2, not so good for SSLv3 */
1294 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1295         {
1296         char *p;
1297         STACK_OF(SSL_CIPHER) *sk;
1298         SSL_CIPHER *c;
1299         int i;
1300
1301         if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1302                 (len < 2))
1303                 return(NULL);
1304
1305         p=buf;
1306         sk=s->session->ciphers;
1307         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1308                 {
1309                 int n;
1310
1311                 c=sk_SSL_CIPHER_value(sk,i);
1312                 n=strlen(c->name);
1313                 if (n+1 > len)
1314                         {
1315                         if (p != buf)
1316                                 --p;
1317                         *p='\0';
1318                         return buf;
1319                         }
1320                 strcpy(p,c->name);
1321                 p+=n;
1322                 *(p++)=':';
1323                 len-=n+1;
1324                 }
1325         p[-1]='\0';
1326         return(buf);
1327         }
1328
1329 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1330                              int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1331         {
1332         int i,j=0;
1333         SSL_CIPHER *c;
1334         unsigned char *q;
1335 #ifndef OPENSSL_NO_KRB5
1336         int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1337 #endif /* OPENSSL_NO_KRB5 */
1338
1339         if (sk == NULL) return(0);
1340         q=p;
1341
1342         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1343                 {
1344                 c=sk_SSL_CIPHER_value(sk,i);
1345 #ifndef OPENSSL_NO_KRB5
1346                 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1347                     nokrb5)
1348                     continue;
1349 #endif /* OPENSSL_NO_KRB5 */
1350 #ifndef OPENSSL_NO_PSK
1351                 /* with PSK there must be client callback set */
1352                 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1353                     s->psk_client_callback == NULL)
1354                         continue;
1355 #endif /* OPENSSL_NO_PSK */
1356                 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1357                 p+=j;
1358                 }
1359         return(p-q);
1360         }
1361
1362 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1363                                                STACK_OF(SSL_CIPHER) **skp)
1364         {
1365         const SSL_CIPHER *c;
1366         STACK_OF(SSL_CIPHER) *sk;
1367         int i,n;
1368
1369         n=ssl_put_cipher_by_char(s,NULL,NULL);
1370         if ((num%n) != 0)
1371                 {
1372                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1373                 return(NULL);
1374                 }
1375         if ((skp == NULL) || (*skp == NULL))
1376                 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1377         else
1378                 {
1379                 sk= *skp;
1380                 sk_SSL_CIPHER_zero(sk);
1381                 }
1382
1383         for (i=0; i<num; i+=n)
1384                 {
1385                 c=ssl_get_cipher_by_char(s,p);
1386                 p+=n;
1387                 if (c != NULL)
1388                         {
1389                         if (!sk_SSL_CIPHER_push(sk,c))
1390                                 {
1391                                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1392                                 goto err;
1393                                 }
1394                         }
1395                 }
1396
1397         if (skp != NULL)
1398                 *skp=sk;
1399         return(sk);
1400 err:
1401         if ((skp == NULL) || (*skp == NULL))
1402                 sk_SSL_CIPHER_free(sk);
1403         return(NULL);
1404         }
1405
1406
1407 #ifndef OPENSSL_NO_TLSEXT
1408 /** return a servername extension value if provided in Client Hello, or NULL.
1409  * So far, only host_name types are defined (RFC 3546).
1410  */
1411
1412 const char *SSL_get_servername(const SSL *s, const int type)
1413         {
1414         if (type != TLSEXT_NAMETYPE_host_name)
1415                 return NULL;
1416
1417         return s->session && !s->tlsext_hostname ?
1418                 s->session->tlsext_hostname :
1419                 s->tlsext_hostname;
1420         }
1421
1422 int SSL_get_servername_type(const SSL *s)
1423         {
1424         if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1425                 return TLSEXT_NAMETYPE_host_name;
1426         return -1;
1427         }
1428 #endif
1429
1430 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1431         {
1432         unsigned long l;
1433
1434         l=(unsigned long)
1435                 ((unsigned int) a->session_id[0]     )|
1436                 ((unsigned int) a->session_id[1]<< 8L)|
1437                 ((unsigned long)a->session_id[2]<<16L)|
1438                 ((unsigned long)a->session_id[3]<<24L);
1439         return(l);
1440         }
1441
1442 /* NB: If this function (or indeed the hash function which uses a sort of
1443  * coarser function than this one) is changed, ensure
1444  * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1445  * able to construct an SSL_SESSION that will collide with any existing session
1446  * with a matching session ID. */
1447 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1448         {
1449         if (a->ssl_version != b->ssl_version)
1450                 return(1);
1451         if (a->session_id_length != b->session_id_length)
1452                 return(1);
1453         return(memcmp(a->session_id,b->session_id,a->session_id_length));
1454         }
1455
1456 /* These wrapper functions should remain rather than redeclaring
1457  * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1458  * variable. The reason is that the functions aren't static, they're exposed via
1459  * ssl.h. */
1460 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1461 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1462
1463 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1464         {
1465         SSL_CTX *ret=NULL;
1466
1467         if (meth == NULL)
1468                 {
1469                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1470                 return(NULL);
1471                 }
1472
1473         if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1474                 {
1475                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1476                 goto err;
1477                 }
1478         ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1479         if (ret == NULL)
1480                 goto err;
1481
1482         memset(ret,0,sizeof(SSL_CTX));
1483
1484         ret->method=meth;
1485
1486         ret->cert_store=NULL;
1487         ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1488         ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1489         ret->session_cache_head=NULL;
1490         ret->session_cache_tail=NULL;
1491
1492         /* We take the system default */
1493         ret->session_timeout=meth->get_timeout();
1494
1495         ret->new_session_cb=0;
1496         ret->remove_session_cb=0;
1497         ret->get_session_cb=0;
1498         ret->generate_session_id=0;
1499
1500         memset((char *)&ret->stats,0,sizeof(ret->stats));
1501
1502         ret->references=1;
1503         ret->quiet_shutdown=0;
1504
1505 /*      ret->cipher=NULL;*/
1506 /*      ret->s2->challenge=NULL;
1507         ret->master_key=NULL;
1508         ret->key_arg=NULL;
1509         ret->s2->conn_id=NULL; */
1510
1511         ret->info_callback=NULL;
1512
1513         ret->app_verify_callback=0;
1514         ret->app_verify_arg=NULL;
1515
1516         ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1517         ret->read_ahead=0;
1518         ret->msg_callback=0;
1519         ret->msg_callback_arg=NULL;
1520         ret->verify_mode=SSL_VERIFY_NONE;
1521 #if 0
1522         ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1523 #endif
1524         ret->sid_ctx_length=0;
1525         ret->default_verify_callback=NULL;
1526         if ((ret->cert=ssl_cert_new()) == NULL)
1527                 goto err;
1528
1529         ret->default_passwd_callback=0;
1530         ret->default_passwd_callback_userdata=NULL;
1531         ret->client_cert_cb=0;
1532         ret->app_gen_cookie_cb=0;
1533         ret->app_verify_cookie_cb=0;
1534
1535         ret->sessions=lh_SSL_SESSION_new();
1536         if (ret->sessions == NULL) goto err;
1537         ret->cert_store=X509_STORE_new();
1538         if (ret->cert_store == NULL) goto err;
1539
1540         ssl_create_cipher_list(ret->method,
1541                 &ret->cipher_list,&ret->cipher_list_by_id,
1542                 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1543         if (ret->cipher_list == NULL
1544             || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1545                 {
1546                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1547                 goto err2;
1548                 }
1549
1550         ret->param = X509_VERIFY_PARAM_new();
1551         if (!ret->param)
1552                 goto err;
1553
1554         if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1555                 {
1556                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1557                 goto err2;
1558                 }
1559         if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1560                 {
1561                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1562                 goto err2;
1563                 }
1564         if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1565                 {
1566                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1567                 goto err2;
1568                 }
1569
1570         if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1571                 goto err;
1572
1573         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1574
1575         ret->extra_certs=NULL;
1576         ret->comp_methods=SSL_COMP_get_compression_methods();
1577
1578         ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1579
1580 #ifndef OPENSSL_NO_TLSEXT
1581         ret->tlsext_servername_callback = 0;
1582         ret->tlsext_servername_arg = NULL;
1583         /* Setup RFC4507 ticket keys */
1584         if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1585                 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1586                 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1587                 ret->options |= SSL_OP_NO_TICKET;
1588
1589         ret->tlsext_status_cb = 0;
1590         ret->tlsext_status_arg = NULL;
1591
1592 #endif
1593 #ifndef OPENSSL_NO_PSK
1594         ret->psk_identity_hint=NULL;
1595         ret->psk_client_callback=NULL;
1596         ret->psk_server_callback=NULL;
1597 #endif
1598 #ifndef OPENSSL_NO_BUF_FREELISTS
1599         ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1600         ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1601         if (!ret->rbuf_freelist)
1602                 goto err;
1603         ret->rbuf_freelist->chunklen = 0;
1604         ret->rbuf_freelist->len = 0;
1605         ret->rbuf_freelist->head = NULL;
1606         ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1607         if (!ret->wbuf_freelist)
1608                 {
1609                 OPENSSL_free(ret->rbuf_freelist);
1610                 goto err;
1611                 }
1612         ret->wbuf_freelist->chunklen = 0;
1613         ret->wbuf_freelist->len = 0;
1614         ret->wbuf_freelist->head = NULL;
1615 #endif
1616 #ifndef OPENSSL_NO_ENGINE
1617         ret->client_cert_engine = NULL;
1618 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1619 #define eng_strx(x)     #x
1620 #define eng_str(x)      eng_strx(x)
1621         /* Use specific client engine automatically... ignore errors */
1622         {
1623         ENGINE *eng;
1624         eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1625         if (!eng)
1626                 {
1627                 ERR_clear_error();
1628                 ENGINE_load_builtin_engines();
1629                 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1630                 }
1631         if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1632                 ERR_clear_error();
1633         }
1634 #endif
1635 #endif
1636
1637         return(ret);
1638 err:
1639         SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1640 err2:
1641         if (ret != NULL) SSL_CTX_free(ret);
1642         return(NULL);
1643         }
1644
1645 #if 0
1646 static void SSL_COMP_free(SSL_COMP *comp)
1647     { OPENSSL_free(comp); }
1648 #endif
1649
1650 #ifndef OPENSSL_NO_BUF_FREELISTS
1651 static void
1652 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1653         {
1654         SSL3_BUF_FREELIST_ENTRY *ent, *next;
1655         for (ent = list->head; ent; ent = next)
1656                 {
1657                 next = ent->next;
1658                 OPENSSL_free(ent);
1659                 }
1660         OPENSSL_free(list);
1661         }
1662 #endif
1663
1664 void SSL_CTX_free(SSL_CTX *a)
1665         {
1666         int i;
1667
1668         if (a == NULL) return;
1669
1670         i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1671 #ifdef REF_PRINT
1672         REF_PRINT("SSL_CTX",a);
1673 #endif
1674         if (i > 0) return;
1675 #ifdef REF_CHECK
1676         if (i < 0)
1677                 {
1678                 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1679                 abort(); /* ok */
1680                 }
1681 #endif
1682
1683         if (a->param)
1684                 X509_VERIFY_PARAM_free(a->param);
1685
1686         /*
1687          * Free internal session cache. However: the remove_cb() may reference
1688          * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1689          * after the sessions were flushed.
1690          * As the ex_data handling routines might also touch the session cache,
1691          * the most secure solution seems to be: empty (flush) the cache, then
1692          * free ex_data, then finally free the cache.
1693          * (See ticket [openssl.org #212].)
1694          */
1695         if (a->sessions != NULL)
1696                 SSL_CTX_flush_sessions(a,0);
1697
1698         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1699
1700         if (a->sessions != NULL)
1701                 lh_SSL_SESSION_free(a->sessions);
1702
1703         if (a->cert_store != NULL)
1704                 X509_STORE_free(a->cert_store);
1705         if (a->cipher_list != NULL)
1706                 sk_SSL_CIPHER_free(a->cipher_list);
1707         if (a->cipher_list_by_id != NULL)
1708                 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1709         if (a->cert != NULL)
1710                 ssl_cert_free(a->cert);
1711         if (a->client_CA != NULL)
1712                 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1713         if (a->extra_certs != NULL)
1714                 sk_X509_pop_free(a->extra_certs,X509_free);
1715 #if 0 /* This should never be done, since it removes a global database */
1716         if (a->comp_methods != NULL)
1717                 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1718 #else
1719         a->comp_methods = NULL;
1720 #endif
1721
1722 #ifndef OPENSSL_NO_PSK
1723         if (a->psk_identity_hint)
1724                 OPENSSL_free(a->psk_identity_hint);
1725 #endif
1726 #ifndef OPENSSL_NO_ENGINE
1727         if (a->client_cert_engine)
1728                 ENGINE_finish(a->client_cert_engine);
1729 #endif
1730
1731 #ifndef OPENSSL_NO_BUF_FREELISTS
1732         if (a->wbuf_freelist)
1733                 ssl_buf_freelist_free(a->wbuf_freelist);
1734         if (a->rbuf_freelist)
1735                 ssl_buf_freelist_free(a->rbuf_freelist);
1736 #endif
1737
1738         OPENSSL_free(a);
1739         }
1740
1741 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1742         {
1743         ctx->default_passwd_callback=cb;
1744         }
1745
1746 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1747         {
1748         ctx->default_passwd_callback_userdata=u;
1749         }
1750
1751 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1752         {
1753         ctx->app_verify_callback=cb;
1754         ctx->app_verify_arg=arg;
1755         }
1756
1757 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1758         {
1759         ctx->verify_mode=mode;
1760         ctx->default_verify_callback=cb;
1761         }
1762
1763 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1764         {
1765         X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1766         }
1767
1768 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
1769         {
1770         CERT_PKEY *cpk;
1771         int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1772         int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1773         int rsa_tmp_export,dh_tmp_export,kl;
1774         unsigned long mask_k,mask_a,emask_k,emask_a;
1775         int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1776 #ifndef OPENSSL_NO_ECDH
1777         int have_ecdh_tmp;
1778 #endif
1779         X509 *x = NULL;
1780         EVP_PKEY *ecc_pkey = NULL;
1781         int signature_nid = 0;
1782
1783         if (c == NULL) return;
1784
1785         kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1786
1787 #ifndef OPENSSL_NO_RSA
1788         rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1789         rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1790                 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1791 #else
1792         rsa_tmp=rsa_tmp_export=0;
1793 #endif
1794 #ifndef OPENSSL_NO_DH
1795         dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1796         dh_tmp_export=(c->dh_tmp_cb != NULL ||
1797                 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1798 #else
1799         dh_tmp=dh_tmp_export=0;
1800 #endif
1801
1802 #ifndef OPENSSL_NO_ECDH
1803         have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1804 #endif
1805         cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1806         rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1807         rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1808         cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1809         rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1810         cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1811         dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1812         cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1813         dh_rsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
1814         dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1815         cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1816 /* FIX THIS EAY EAY EAY */
1817         dh_dsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
1818         dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1819         cpk= &(c->pkeys[SSL_PKEY_ECC]);
1820         have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1821         mask_k=0;
1822         mask_a=0;
1823         emask_k=0;
1824         emask_a=0;
1825
1826
1827
1828 #ifdef CIPHER_DEBUG
1829         printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1830                 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
1831                 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1832 #endif
1833
1834         cpk = &(c->pkeys[SSL_PKEY_GOST01]);
1835         if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1836                 mask_k |= SSL_kGOST;
1837                 mask_a |= SSL_aGOST01;
1838         }
1839         cpk = &(c->pkeys[SSL_PKEY_GOST94]);
1840         if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1841                 mask_k |= SSL_kGOST;
1842                 mask_a |= SSL_aGOST94;
1843         }
1844
1845         if (rsa_enc || (rsa_tmp && rsa_sign))
1846                 mask_k|=SSL_kRSA;
1847         if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1848                 emask_k|=SSL_kRSA;
1849
1850 #if 0
1851         /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1852         if (    (dh_tmp || dh_rsa || dh_dsa) &&
1853                 (rsa_enc || rsa_sign || dsa_sign))
1854                 mask_k|=SSL_kEDH;
1855         if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1856                 (rsa_enc || rsa_sign || dsa_sign))
1857                 emask_k|=SSL_kEDH;
1858 #endif
1859
1860         if (dh_tmp_export)
1861                 emask_k|=SSL_kEDH;
1862
1863         if (dh_tmp)
1864                 mask_k|=SSL_kEDH;
1865
1866         if (dh_rsa) mask_k|=SSL_kDHr;
1867         if (dh_rsa_export) emask_k|=SSL_kDHr;
1868
1869         if (dh_dsa) mask_k|=SSL_kDHd;
1870         if (dh_dsa_export) emask_k|=SSL_kDHd;
1871
1872         if (rsa_enc || rsa_sign)
1873                 {
1874                 mask_a|=SSL_aRSA;
1875                 emask_a|=SSL_aRSA;
1876                 }
1877
1878         if (dsa_sign)
1879                 {
1880                 mask_a|=SSL_aDSS;
1881                 emask_a|=SSL_aDSS;
1882                 }
1883
1884         mask_a|=SSL_aNULL;
1885         emask_a|=SSL_aNULL;
1886
1887 #ifndef OPENSSL_NO_KRB5
1888         mask_k|=SSL_kKRB5;
1889         mask_a|=SSL_aKRB5;
1890         emask_k|=SSL_kKRB5;
1891         emask_a|=SSL_aKRB5;
1892 #endif
1893
1894         /* An ECC certificate may be usable for ECDH and/or
1895          * ECDSA cipher suites depending on the key usage extension.
1896          */
1897         if (have_ecc_cert)
1898                 {
1899                 /* This call populates extension flags (ex_flags) */
1900                 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1901                 X509_check_purpose(x, -1, 0);
1902                 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1903                     (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1904                 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1905                     (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1906                 ecc_pkey = X509_get_pubkey(x);
1907                 ecc_pkey_size = (ecc_pkey != NULL) ?
1908                     EVP_PKEY_bits(ecc_pkey) : 0;
1909                 EVP_PKEY_free(ecc_pkey);
1910                 if ((x->sig_alg) && (x->sig_alg->algorithm))
1911                         signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1912 #ifndef OPENSSL_NO_ECDH
1913                 if (ecdh_ok)
1914                         {
1915                         const char *sig = OBJ_nid2ln(signature_nid);
1916                         if (sig == NULL)
1917                                 {
1918                                 ERR_clear_error();
1919                                 sig = "unknown";
1920                                 }
1921
1922                         if (strstr(sig, "WithRSA"))
1923                                 {
1924                                 mask_k|=SSL_kECDHr;
1925                                 mask_a|=SSL_aECDH;
1926                                 if (ecc_pkey_size <= 163)
1927                                         {
1928                                         emask_k|=SSL_kECDHr;
1929                                         emask_a|=SSL_aECDH;
1930                                         }
1931                                 }
1932
1933                         if (signature_nid == NID_ecdsa_with_SHA1)
1934                                 {
1935                                 mask_k|=SSL_kECDHe;
1936                                 mask_a|=SSL_aECDH;
1937                                 if (ecc_pkey_size <= 163)
1938                                         {
1939                                         emask_k|=SSL_kECDHe;
1940                                         emask_a|=SSL_aECDH;
1941                                         }
1942                                 }
1943                         }
1944 #endif
1945 #ifndef OPENSSL_NO_ECDSA
1946                 if (ecdsa_ok)
1947                         {
1948                         mask_a|=SSL_aECDSA;
1949                         emask_a|=SSL_aECDSA;
1950                         }
1951 #endif
1952                 }
1953
1954 #ifndef OPENSSL_NO_ECDH
1955         if (have_ecdh_tmp)
1956                 {
1957                 mask_k|=SSL_kEECDH;
1958                 emask_k|=SSL_kEECDH;
1959                 }
1960 #endif
1961
1962 #ifndef OPENSSL_NO_PSK
1963         mask_k |= SSL_kPSK;
1964         mask_a |= SSL_aPSK;
1965         emask_k |= SSL_kPSK;
1966         emask_a |= SSL_aPSK;
1967 #endif
1968
1969         c->mask_k=mask_k;
1970         c->mask_a=mask_a;
1971         c->export_mask_k=emask_k;
1972         c->export_mask_a=emask_a;
1973         c->valid=1;
1974         }
1975
1976 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
1977 #define ku_reject(x, usage) \
1978         (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
1979
1980 #ifndef OPENSSL_NO_EC
1981
1982 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, const SSL_CIPHER *cs)
1983         {
1984         unsigned long alg_k, alg_a;
1985         EVP_PKEY *pkey = NULL;
1986         int keysize = 0;
1987         int signature_nid = 0;
1988
1989         alg_k = cs->algorithm_mkey;
1990         alg_a = cs->algorithm_auth;
1991
1992         if (SSL_C_IS_EXPORT(cs))
1993                 {
1994                 /* ECDH key length in export ciphers must be <= 163 bits */
1995                 pkey = X509_get_pubkey(x);
1996                 if (pkey == NULL) return 0;
1997                 keysize = EVP_PKEY_bits(pkey);
1998                 EVP_PKEY_free(pkey);
1999                 if (keysize > 163) return 0;
2000                 }
2001
2002         /* This call populates the ex_flags field correctly */
2003         X509_check_purpose(x, -1, 0);
2004         if ((x->sig_alg) && (x->sig_alg->algorithm))
2005                 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2006         if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2007                 {
2008                 /* key usage, if present, must allow key agreement */
2009                 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2010                         {
2011                         SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2012                         return 0;
2013                         }
2014                 if (alg_k & SSL_kECDHe)
2015                         {
2016                         /* signature alg must be ECDSA */
2017                         if (signature_nid != NID_ecdsa_with_SHA1)
2018                                 {
2019                                 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2020                                 return 0;
2021                                 }
2022                         }
2023                 if (alg_k & SSL_kECDHr)
2024                         {
2025                         /* signature alg must be RSA */
2026
2027                         const char *sig = OBJ_nid2ln(signature_nid);
2028                         if (sig == NULL)
2029                                 {
2030                                 ERR_clear_error();
2031                                 sig = "unknown";
2032                                 }
2033                         if (strstr(sig, "WithRSA") == NULL)
2034                                 {
2035                                 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2036                                 return 0;
2037                                 }
2038                         }
2039                 }
2040         if (alg_a & SSL_aECDSA)
2041                 {
2042                 /* key usage, if present, must allow signing */
2043                 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2044                         {
2045                         SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2046                         return 0;
2047                         }
2048                 }
2049
2050         return 1;  /* all checks are ok */
2051         }
2052
2053 #endif
2054
2055 /* THIS NEEDS CLEANING UP */
2056 X509 *ssl_get_server_send_cert(SSL *s)
2057         {
2058         unsigned long alg_k,alg_a,mask_k,mask_a;
2059         CERT *c;
2060         int i,is_export;
2061
2062         c=s->cert;
2063         ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2064         is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
2065         if (is_export)
2066                 {
2067                 mask_k = c->export_mask_k;
2068                 mask_a = c->export_mask_a;
2069                 }
2070         else
2071                 {
2072                 mask_k = c->mask_k;
2073                 mask_a = c->mask_a;
2074                 }
2075
2076         alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2077         alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2078
2079         if (alg_k & (SSL_kECDHr|SSL_kECDHe))
2080                 {
2081                 /* we don't need to look at SSL_kEECDH
2082                  * since no certificate is needed for
2083                  * anon ECDH and for authenticated
2084                  * EECDH, the check for the auth
2085                  * algorithm will set i correctly
2086                  * NOTE: For ECDH-RSA, we need an ECC
2087                  * not an RSA cert but for EECDH-RSA
2088                  * we need an RSA cert. Placing the
2089                  * checks for SSL_kECDH before RSA
2090                  * checks ensures the correct cert is chosen.
2091                  */
2092                 i=SSL_PKEY_ECC;
2093                 }
2094         else if (alg_a & SSL_aECDSA)
2095                 {
2096                 i=SSL_PKEY_ECC;
2097                 }
2098         else if (alg_k & SSL_kDHr)
2099                 i=SSL_PKEY_DH_RSA;
2100         else if (alg_k & SSL_kDHd)
2101                 i=SSL_PKEY_DH_DSA;
2102         else if (alg_a & SSL_aDSS)
2103                 i=SSL_PKEY_DSA_SIGN;
2104         else if (alg_a & SSL_aRSA)
2105                 {
2106                 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2107                         i=SSL_PKEY_RSA_SIGN;
2108                 else
2109                         i=SSL_PKEY_RSA_ENC;
2110                 }
2111         else if (alg_a & SSL_aKRB5)
2112                 {
2113                 /* VRS something else here? */
2114                 return(NULL);
2115                 }
2116         else if (alg_a & SSL_aGOST94)
2117                 i=SSL_PKEY_GOST94;
2118         else if (alg_a & SSL_aGOST01)
2119                 i=SSL_PKEY_GOST01;
2120         else /* if (alg_a & SSL_aNULL) */
2121                 {
2122                 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
2123                 return(NULL);
2124                 }
2125         if (c->pkeys[i].x509 == NULL) return(NULL);
2126
2127         return(c->pkeys[i].x509);
2128         }
2129
2130 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher)
2131         {
2132         unsigned long alg_a;
2133         CERT *c;
2134
2135         alg_a = cipher->algorithm_auth;
2136         c=s->cert;
2137
2138         if ((alg_a & SSL_aDSS) &&
2139                 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2140                 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
2141         else if (alg_a & SSL_aRSA)
2142                 {
2143                 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2144                         return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
2145                 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2146                         return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
2147                 else
2148                         return(NULL);
2149                 }
2150         else if ((alg_a & SSL_aECDSA) &&
2151                  (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2152                 return(c->pkeys[SSL_PKEY_ECC].privatekey);
2153         else /* if (alg_a & SSL_aNULL) */
2154                 {
2155                 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2156                 return(NULL);
2157                 }
2158         }
2159
2160 void ssl_update_cache(SSL *s,int mode)
2161         {
2162         int i;
2163
2164         /* If the session_id_length is 0, we are not supposed to cache it,
2165          * and it would be rather hard to do anyway :-) */
2166         if (s->session->session_id_length == 0) return;
2167
2168         i=s->session_ctx->session_cache_mode;
2169         if ((i & mode) && (!s->hit)
2170                 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2171                     || SSL_CTX_add_session(s->session_ctx,s->session))
2172                 && (s->session_ctx->new_session_cb != NULL))
2173                 {
2174                 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2175                 if (!s->session_ctx->new_session_cb(s,s->session))
2176                         SSL_SESSION_free(s->session);
2177                 }
2178
2179         /* auto flush every 255 connections */
2180         if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2181                 ((i & mode) == mode))
2182                 {
2183                 if (  (((mode & SSL_SESS_CACHE_CLIENT)
2184                         ?s->session_ctx->stats.sess_connect_good
2185                         :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2186                         {
2187                         SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2188                         }
2189                 }
2190         }
2191
2192 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2193         {
2194         return(s->method);
2195         }
2196
2197 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2198         {
2199         int conn= -1;
2200         int ret=1;
2201
2202         if (s->method != meth)
2203                 {
2204                 if (s->handshake_func != NULL)
2205                         conn=(s->handshake_func == s->method->ssl_connect);
2206
2207                 if (s->method->version == meth->version)
2208                         s->method=meth;
2209                 else
2210                         {
2211                         s->method->ssl_free(s);
2212                         s->method=meth;
2213                         ret=s->method->ssl_new(s);
2214                         }
2215
2216                 if (conn == 1)
2217                         s->handshake_func=meth->ssl_connect;
2218                 else if (conn == 0)
2219                         s->handshake_func=meth->ssl_accept;
2220                 }
2221         return(ret);
2222         }
2223
2224 int SSL_get_error(const SSL *s,int i)
2225         {
2226         int reason;
2227         unsigned long l;
2228         BIO *bio;
2229
2230         if (i > 0) return(SSL_ERROR_NONE);
2231
2232         /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2233          * etc, where we do encode the error */
2234         if ((l=ERR_peek_error()) != 0)
2235                 {
2236                 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2237                         return(SSL_ERROR_SYSCALL);
2238                 else
2239                         return(SSL_ERROR_SSL);
2240                 }
2241
2242         if ((i < 0) && SSL_want_read(s))
2243                 {
2244                 bio=SSL_get_rbio(s);
2245                 if (BIO_should_read(bio))
2246                         return(SSL_ERROR_WANT_READ);
2247                 else if (BIO_should_write(bio))
2248                         /* This one doesn't make too much sense ... We never try
2249                          * to write to the rbio, and an application program where
2250                          * rbio and wbio are separate couldn't even know what it
2251                          * should wait for.
2252                          * However if we ever set s->rwstate incorrectly
2253                          * (so that we have SSL_want_read(s) instead of
2254                          * SSL_want_write(s)) and rbio and wbio *are* the same,
2255                          * this test works around that bug; so it might be safer
2256                          * to keep it. */
2257                         return(SSL_ERROR_WANT_WRITE);
2258                 else if (BIO_should_io_special(bio))
2259                         {
2260                         reason=BIO_get_retry_reason(bio);
2261                         if (reason == BIO_RR_CONNECT)
2262                                 return(SSL_ERROR_WANT_CONNECT);
2263                         else if (reason == BIO_RR_ACCEPT)
2264                                 return(SSL_ERROR_WANT_ACCEPT);
2265                         else
2266                                 return(SSL_ERROR_SYSCALL); /* unknown */
2267                         }
2268                 }
2269
2270         if ((i < 0) && SSL_want_write(s))
2271                 {
2272                 bio=SSL_get_wbio(s);
2273                 if (BIO_should_write(bio))
2274                         return(SSL_ERROR_WANT_WRITE);
2275                 else if (BIO_should_read(bio))
2276                         /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2277                         return(SSL_ERROR_WANT_READ);
2278                 else if (BIO_should_io_special(bio))
2279                         {
2280                         reason=BIO_get_retry_reason(bio);
2281                         if (reason == BIO_RR_CONNECT)
2282                                 return(SSL_ERROR_WANT_CONNECT);
2283                         else if (reason == BIO_RR_ACCEPT)
2284                                 return(SSL_ERROR_WANT_ACCEPT);
2285                         else
2286                                 return(SSL_ERROR_SYSCALL);
2287                         }
2288                 }
2289         if ((i < 0) && SSL_want_x509_lookup(s))
2290                 {
2291                 return(SSL_ERROR_WANT_X509_LOOKUP);
2292                 }
2293
2294         if (i == 0)
2295                 {
2296                 if (s->version == SSL2_VERSION)
2297                         {
2298                         /* assume it is the socket being closed */
2299                         return(SSL_ERROR_ZERO_RETURN);
2300                         }
2301                 else
2302                         {
2303                         if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2304                                 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2305                                 return(SSL_ERROR_ZERO_RETURN);
2306                         }
2307                 }
2308         return(SSL_ERROR_SYSCALL);
2309         }
2310
2311 int SSL_do_handshake(SSL *s)
2312         {
2313         int ret=1;
2314
2315         if (s->handshake_func == NULL)
2316                 {
2317                 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2318                 return(-1);
2319                 }
2320
2321         s->method->ssl_renegotiate_check(s);
2322
2323         if (SSL_in_init(s) || SSL_in_before(s))
2324                 {
2325                 ret=s->handshake_func(s);
2326                 }
2327         return(ret);
2328         }
2329
2330 /* For the next 2 functions, SSL_clear() sets shutdown and so
2331  * one of these calls will reset it */
2332 void SSL_set_accept_state(SSL *s)
2333         {
2334         s->server=1;
2335         s->shutdown=0;
2336         s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2337         s->handshake_func=s->method->ssl_accept;
2338         /* clear the current cipher */
2339         ssl_clear_cipher_ctx(s);
2340         ssl_clear_hash_ctx(&s->read_hash);
2341         ssl_clear_hash_ctx(&s->write_hash);
2342         }
2343
2344 void SSL_set_connect_state(SSL *s)
2345         {
2346         s->server=0;
2347         s->shutdown=0;
2348         s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2349         s->handshake_func=s->method->ssl_connect;
2350         /* clear the current cipher */
2351         ssl_clear_cipher_ctx(s);
2352         ssl_clear_hash_ctx(&s->read_hash);
2353         ssl_clear_hash_ctx(&s->write_hash);
2354         }
2355
2356 int ssl_undefined_function(SSL *s)
2357         {
2358         SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2359         return(0);
2360         }
2361
2362 int ssl_undefined_void_function(void)
2363         {
2364         SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2365         return(0);
2366         }
2367
2368 int ssl_undefined_const_function(const SSL *s)
2369         {
2370         SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2371         return(0);
2372         }
2373
2374 SSL_METHOD *ssl_bad_method(int ver)
2375         {
2376         SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2377         return(NULL);
2378         }
2379
2380 const char *SSL_get_version(const SSL *s)
2381         {
2382         if (s->version == TLS1_VERSION)
2383                 return("TLSv1");
2384         else if (s->version == SSL3_VERSION)
2385                 return("SSLv3");
2386         else if (s->version == SSL2_VERSION)
2387                 return("SSLv2");
2388         else
2389                 return("unknown");
2390         }
2391
2392 SSL *SSL_dup(SSL *s)
2393         {
2394         STACK_OF(X509_NAME) *sk;
2395         X509_NAME *xn;
2396         SSL *ret;
2397         int i;
2398
2399         if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2400             return(NULL);
2401
2402         ret->version = s->version;
2403         ret->type = s->type;
2404         ret->method = s->method;
2405
2406         if (s->session != NULL)
2407                 {
2408                 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2409                 SSL_copy_session_id(ret,s);
2410                 }
2411         else
2412                 {
2413                 /* No session has been established yet, so we have to expect
2414                  * that s->cert or ret->cert will be changed later --
2415                  * they should not both point to the same object,
2416                  * and thus we can't use SSL_copy_session_id. */
2417
2418                 ret->method->ssl_free(ret);
2419                 ret->method = s->method;
2420                 ret->method->ssl_new(ret);
2421
2422                 if (s->cert != NULL)
2423                         {
2424                         if (ret->cert != NULL)
2425                                 {
2426                                 ssl_cert_free(ret->cert);
2427                                 }
2428                         ret->cert = ssl_cert_dup(s->cert);
2429                         if (ret->cert == NULL)
2430                                 goto err;
2431                         }
2432
2433                 SSL_set_session_id_context(ret,
2434                         s->sid_ctx, s->sid_ctx_length);
2435                 }
2436
2437         ret->options=s->options;
2438         ret->mode=s->mode;
2439         SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2440         SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2441         ret->msg_callback = s->msg_callback;
2442         ret->msg_callback_arg = s->msg_callback_arg;
2443         SSL_set_verify(ret,SSL_get_verify_mode(s),
2444                 SSL_get_verify_callback(s));
2445         SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2446         ret->generate_session_id = s->generate_session_id;
2447
2448         SSL_set_info_callback(ret,SSL_get_info_callback(s));
2449
2450         ret->debug=s->debug;
2451
2452         /* copy app data, a little dangerous perhaps */
2453         if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2454                 goto err;
2455
2456         /* setup rbio, and wbio */
2457         if (s->rbio != NULL)
2458                 {
2459                 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2460                         goto err;
2461                 }
2462         if (s->wbio != NULL)
2463                 {
2464                 if (s->wbio != s->rbio)
2465                         {
2466                         if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2467                                 goto err;
2468                         }
2469                 else
2470                         ret->wbio=ret->rbio;
2471                 }
2472         ret->rwstate = s->rwstate;
2473         ret->in_handshake = s->in_handshake;
2474         ret->handshake_func = s->handshake_func;
2475         ret->server = s->server;
2476         ret->new_session = s->new_session;
2477         ret->quiet_shutdown = s->quiet_shutdown;
2478         ret->shutdown=s->shutdown;
2479         ret->state=s->state; /* SSL_dup does not really work at any state, though */
2480         ret->rstate=s->rstate;
2481         ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2482         ret->hit=s->hit;
2483
2484         X509_VERIFY_PARAM_inherit(ret->param, s->param);
2485
2486         /* dup the cipher_list and cipher_list_by_id stacks */
2487         if (s->cipher_list != NULL)
2488                 {
2489                 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2490                         goto err;
2491                 }
2492         if (s->cipher_list_by_id != NULL)
2493                 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2494                         == NULL)
2495                         goto err;
2496
2497         /* Dup the client_CA list */
2498         if (s->client_CA != NULL)
2499                 {
2500                 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2501                 ret->client_CA=sk;
2502                 for (i=0; i<sk_X509_NAME_num(sk); i++)
2503                         {
2504                         xn=sk_X509_NAME_value(sk,i);
2505                         if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2506                                 {
2507                                 X509_NAME_free(xn);
2508                                 goto err;
2509                                 }
2510                         }
2511                 }
2512
2513         if (0)
2514                 {
2515 err:
2516                 if (ret != NULL) SSL_free(ret);
2517                 ret=NULL;
2518                 }
2519         return(ret);
2520         }
2521
2522 void ssl_clear_cipher_ctx(SSL *s)
2523         {
2524         if (s->enc_read_ctx != NULL)
2525                 {
2526                 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2527                 OPENSSL_free(s->enc_read_ctx);
2528                 s->enc_read_ctx=NULL;
2529                 }
2530         if (s->enc_write_ctx != NULL)
2531                 {
2532                 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2533                 OPENSSL_free(s->enc_write_ctx);
2534                 s->enc_write_ctx=NULL;
2535                 }
2536 #ifndef OPENSSL_NO_COMP
2537         if (s->expand != NULL)
2538                 {
2539                 COMP_CTX_free(s->expand);
2540                 s->expand=NULL;
2541                 }
2542         if (s->compress != NULL)
2543                 {
2544                 COMP_CTX_free(s->compress);
2545                 s->compress=NULL;
2546                 }
2547 #endif
2548         }
2549
2550 /* Fix this function so that it takes an optional type parameter */
2551 X509 *SSL_get_certificate(const SSL *s)
2552         {
2553         if (s->cert != NULL)
2554                 return(s->cert->key->x509);
2555         else
2556                 return(NULL);
2557         }
2558
2559 /* Fix this function so that it takes an optional type parameter */
2560 EVP_PKEY *SSL_get_privatekey(SSL *s)
2561         {
2562         if (s->cert != NULL)
2563                 return(s->cert->key->privatekey);
2564         else
2565                 return(NULL);
2566         }
2567
2568 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2569         {
2570         if ((s->session != NULL) && (s->session->cipher != NULL))
2571                 return(s->session->cipher);
2572         return(NULL);
2573         }
2574 #ifdef OPENSSL_NO_COMP
2575 const void *SSL_get_current_compression(SSL *s)
2576         {
2577         return NULL;
2578         }
2579 const void *SSL_get_current_expansion(SSL *s)
2580         {
2581         return NULL;
2582         }
2583 #else
2584
2585 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2586         {
2587         if (s->compress != NULL)
2588                 return(s->compress->meth);
2589         return(NULL);
2590         }
2591
2592 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2593         {
2594         if (s->expand != NULL)
2595                 return(s->expand->meth);
2596         return(NULL);
2597         }
2598 #endif
2599
2600 int ssl_init_wbio_buffer(SSL *s,int push)
2601         {
2602         BIO *bbio;
2603
2604         if (s->bbio == NULL)
2605                 {
2606                 bbio=BIO_new(BIO_f_buffer());
2607                 if (bbio == NULL) return(0);
2608                 s->bbio=bbio;
2609                 }
2610         else
2611                 {
2612                 bbio=s->bbio;
2613                 if (s->bbio == s->wbio)
2614                         s->wbio=BIO_pop(s->wbio);
2615                 }
2616         (void)BIO_reset(bbio);
2617 /*      if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2618         if (!BIO_set_read_buffer_size(bbio,1))
2619                 {
2620                 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2621                 return(0);
2622                 }
2623         if (push)
2624                 {
2625                 if (s->wbio != bbio)
2626                         s->wbio=BIO_push(bbio,s->wbio);
2627                 }
2628         else
2629                 {
2630                 if (s->wbio == bbio)
2631                         s->wbio=BIO_pop(bbio);
2632                 }
2633         return(1);
2634         }
2635
2636 void ssl_free_wbio_buffer(SSL *s)
2637         {
2638         if (s->bbio == NULL) return;
2639
2640         if (s->bbio == s->wbio)
2641                 {
2642                 /* remove buffering */
2643                 s->wbio=BIO_pop(s->wbio);
2644 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2645                 assert(s->wbio != NULL);
2646 #endif
2647         }
2648         BIO_free(s->bbio);
2649         s->bbio=NULL;
2650         }
2651
2652 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2653         {
2654         ctx->quiet_shutdown=mode;
2655         }
2656
2657 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2658         {
2659         return(ctx->quiet_shutdown);
2660         }
2661
2662 void SSL_set_quiet_shutdown(SSL *s,int mode)
2663         {
2664         s->quiet_shutdown=mode;
2665         }
2666
2667 int SSL_get_quiet_shutdown(const SSL *s)
2668         {
2669         return(s->quiet_shutdown);
2670         }
2671
2672 void SSL_set_shutdown(SSL *s,int mode)
2673         {
2674         s->shutdown=mode;
2675         }
2676
2677 int SSL_get_shutdown(const SSL *s)
2678         {
2679         return(s->shutdown);
2680         }
2681
2682 int SSL_version(const SSL *s)
2683         {
2684         return(s->version);
2685         }
2686
2687 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2688         {
2689         return(ssl->ctx);
2690         }
2691
2692 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2693         {
2694         if (ssl->ctx == ctx)
2695                 return ssl->ctx;
2696 #ifndef OPENSSL_NO_TLSEXT
2697         if (ctx == NULL)
2698                 ctx = ssl->initial_ctx;
2699 #endif
2700         if (ssl->cert != NULL)
2701                 ssl_cert_free(ssl->cert);
2702         ssl->cert = ssl_cert_dup(ctx->cert);
2703         CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2704         if (ssl->ctx != NULL)
2705                 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2706         ssl->ctx = ctx;
2707         return(ssl->ctx);
2708         }
2709
2710 #ifndef OPENSSL_NO_STDIO
2711 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2712         {
2713         return(X509_STORE_set_default_paths(ctx->cert_store));
2714         }
2715
2716 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2717                 const char *CApath)
2718         {
2719         return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2720         }
2721 #endif
2722
2723 void SSL_set_info_callback(SSL *ssl,
2724         void (*cb)(const SSL *ssl,int type,int val))
2725         {
2726         ssl->info_callback=cb;
2727         }
2728
2729 /* One compiler (Diab DCC) doesn't like argument names in returned
2730    function pointer.  */
2731 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2732         {
2733         return ssl->info_callback;
2734         }
2735
2736 int SSL_state(const SSL *ssl)
2737         {
2738         return(ssl->state);
2739         }
2740
2741 void SSL_set_verify_result(SSL *ssl,long arg)
2742         {
2743         ssl->verify_result=arg;
2744         }
2745
2746 long SSL_get_verify_result(const SSL *ssl)
2747         {
2748         return(ssl->verify_result);
2749         }
2750
2751 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2752                          CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2753         {
2754         return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2755                                 new_func, dup_func, free_func);
2756         }
2757
2758 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2759         {
2760         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2761         }
2762
2763 void *SSL_get_ex_data(const SSL *s,int idx)
2764         {
2765         return(CRYPTO_get_ex_data(&s->ex_data,idx));
2766         }
2767
2768 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2769                              CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2770         {
2771         return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2772                                 new_func, dup_func, free_func);
2773         }
2774
2775 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2776         {
2777         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2778         }
2779
2780 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
2781         {
2782         return(CRYPTO_get_ex_data(&s->ex_data,idx));
2783         }
2784
2785 int ssl_ok(SSL *s)
2786         {
2787         return(1);
2788         }
2789
2790 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2791         {
2792         return(ctx->cert_store);
2793         }
2794
2795 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2796         {
2797         if (ctx->cert_store != NULL)
2798                 X509_STORE_free(ctx->cert_store);
2799         ctx->cert_store=store;
2800         }
2801
2802 int SSL_want(const SSL *s)
2803         {
2804         return(s->rwstate);
2805         }
2806
2807 /*!
2808  * \brief Set the callback for generating temporary RSA keys.
2809  * \param ctx the SSL context.
2810  * \param cb the callback
2811  */
2812
2813 #ifndef OPENSSL_NO_RSA
2814 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2815                                                           int is_export,
2816                                                           int keylength))
2817     {
2818     SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2819     }
2820
2821 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2822                                                   int is_export,
2823                                                   int keylength))
2824     {
2825     SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2826     }
2827 #endif
2828
2829 #ifdef DOXYGEN
2830 /*!
2831  * \brief The RSA temporary key callback function.
2832  * \param ssl the SSL session.
2833  * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2834  * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2835  * of the required key in bits.
2836  * \return the temporary RSA key.
2837  * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2838  */
2839
2840 RSA *cb(SSL *ssl,int is_export,int keylength)
2841     {}
2842 #endif
2843
2844 /*!
2845  * \brief Set the callback for generating temporary DH keys.
2846  * \param ctx the SSL context.
2847  * \param dh the callback
2848  */
2849
2850 #ifndef OPENSSL_NO_DH
2851 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2852                                                         int keylength))
2853         {
2854         SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2855         }
2856
2857 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2858                                                 int keylength))
2859         {
2860         SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2861         }
2862 #endif
2863
2864 #ifndef OPENSSL_NO_ECDH
2865 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2866                                                                 int keylength))
2867         {
2868         SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2869         }
2870
2871 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2872                                                         int keylength))
2873         {
2874         SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2875         }
2876 #endif
2877
2878 #ifndef OPENSSL_NO_PSK
2879 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
2880         {
2881         if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2882                 {
2883                 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2884                 return 0;
2885                 }
2886         if (ctx->psk_identity_hint != NULL)
2887                 OPENSSL_free(ctx->psk_identity_hint);
2888         if (identity_hint != NULL)
2889                 {
2890                 ctx->psk_identity_hint = BUF_strdup(identity_hint);
2891                 if (ctx->psk_identity_hint == NULL)
2892                         return 0;
2893                 }
2894         else
2895                 ctx->psk_identity_hint = NULL;
2896         return 1;
2897         }
2898
2899 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
2900         {
2901         if (s == NULL)
2902                 return 0;
2903
2904         if (s->session == NULL)
2905                 return 1; /* session not created yet, ignored */
2906
2907         if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2908                 {
2909                 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2910                 return 0;
2911                 }
2912         if (s->session->psk_identity_hint != NULL)
2913                 OPENSSL_free(s->session->psk_identity_hint);
2914         if (identity_hint != NULL)
2915                 {
2916                 s->session->psk_identity_hint = BUF_strdup(identity_hint);
2917                 if (s->session->psk_identity_hint == NULL)
2918                         return 0;
2919                 }
2920         else
2921                 s->session->psk_identity_hint = NULL;
2922         return 1;
2923         }
2924
2925 const char *SSL_get_psk_identity_hint(const SSL *s)
2926         {
2927         if (s == NULL || s->session == NULL)
2928                 return NULL;
2929         return(s->session->psk_identity_hint);
2930         }
2931
2932 const char *SSL_get_psk_identity(const SSL *s)
2933         {
2934         if (s == NULL || s->session == NULL)
2935                 return NULL;
2936         return(s->session->psk_identity);
2937         }
2938
2939 void SSL_set_psk_client_callback(SSL *s,
2940     unsigned int (*cb)(SSL *ssl, const char *hint,
2941                        char *identity, unsigned int max_identity_len, unsigned char *psk,
2942                        unsigned int max_psk_len))
2943         {
2944         s->psk_client_callback = cb;
2945         }
2946
2947 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
2948     unsigned int (*cb)(SSL *ssl, const char *hint,
2949                        char *identity, unsigned int max_identity_len, unsigned char *psk,
2950                        unsigned int max_psk_len))
2951         {
2952         ctx->psk_client_callback = cb;
2953         }
2954
2955 void SSL_set_psk_server_callback(SSL *s,
2956     unsigned int (*cb)(SSL *ssl, const char *identity,
2957                        unsigned char *psk, unsigned int max_psk_len))
2958         {
2959         s->psk_server_callback = cb;
2960         }
2961
2962 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
2963     unsigned int (*cb)(SSL *ssl, const char *identity,
2964                        unsigned char *psk, unsigned int max_psk_len))
2965         {
2966         ctx->psk_server_callback = cb;
2967         }
2968 #endif
2969
2970 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))
2971         {
2972         SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2973         }
2974 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))
2975         {
2976         SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2977         }
2978
2979 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
2980  * vairable, freeing  EVP_MD_CTX previously stored in that variable, if
2981  * any. If EVP_MD pointer is passed, initializes ctx with this md
2982  * Returns newly allocated ctx;
2983  */
2984
2985 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
2986 {
2987         ssl_clear_hash_ctx(hash);
2988         *hash = EVP_MD_CTX_create();
2989         if (md) EVP_DigestInit_ex(*hash,md,NULL);
2990         return *hash;
2991 }
2992 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
2993 {
2994
2995         if (*hash) EVP_MD_CTX_destroy(*hash);
2996         *hash=NULL;
2997 }
2998
2999 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3000 #include "../crypto/bio/bss_file.c"
3001 #endif
3002
3003 IMPLEMENT_STACK_OF(SSL_CIPHER)
3004 IMPLEMENT_STACK_OF(SSL_COMP)
3005 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
3006                                     ssl_cipher_id);
3007