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
  62 #include <assert.h>
  63 #include <stdio.h>
  64 #include <openssl/objects.h>
  65 #include <openssl/lhash.h>
  66 #include <openssl/x509v3.h>
  67 #include "ssl_locl.h"
  68
  69 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
  70
  71 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_meth=NULL;
  72 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_ctx_meth=NULL;
  73 static int ssl_meth_num=0;
  74 static int ssl_ctx_meth_num=0;
  75
  76 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
  77         /* evil casts, but these functions are only called if there's a library bug */
  78         (int (*)(SSL *,int))ssl_undefined_function,
  79         (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
  80         ssl_undefined_function,
  81         (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
  82         (int (*)(SSL*, int))ssl_undefined_function,
  83         (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
  84         };
  85
  86 int SSL_clear(SSL *s)
  87         {
  88         int state;
  89
  90         if (s->method == NULL)
  91                 {
  92                 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
  93                 return(0);
  94                 }
  95
  96         s->error=0;
  97         s->hit=0;
  98         s->shutdown=0;
  99
 100 #if 0 /* Disabled since version 1.10 of this file (early return not
 101        * needed because SSL_clear is not called when doing renegotiation) */
 102         /* This is set if we are doing dynamic renegotiation so keep
 103          * the old cipher.  It is sort of a SSL_clear_lite :-) */
 104         if (s->new_session) return(1);
 105 #else
 106         if (s->new_session)
 107                 {
 108                 SSLerr(SSL_F_SSL_CLEAR,SSL_R_INTERNAL_ERROR);
 109                 return 0;
 110                 }
 111 #endif
 112
 113         state=s->state; /* Keep to check if we throw away the session-id */
 114         s->type=0;
 115
 116         s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
 117
 118         s->version=s->method->version;
 119         s->client_version=s->version;
 120         s->rwstate=SSL_NOTHING;
 121         s->rstate=SSL_ST_READ_HEADER;
 122 #if 0
 123         s->read_ahead=s->ctx->read_ahead;
 124 #endif
 125
 126         if (s->init_buf != NULL)
 127                 {
 128                 BUF_MEM_free(s->init_buf);
 129                 s->init_buf=NULL;
 130                 }
 131
 132         ssl_clear_cipher_ctx(s);
 133
 134         if (ssl_clear_bad_session(s))
 135                 {
 136                 SSL_SESSION_free(s->session);
 137                 s->session=NULL;
 138                 }
 139
 140         s->first_packet=0;
 141
 142 #if 1
 143         /* Check to see if we were changed into a different method, if
 144          * so, revert back if we are not doing session-id reuse. */
 145         if ((s->session == NULL) && (s->method != s->ctx->method))
 146                 {
 147                 s->method->ssl_free(s);
 148                 s->method=s->ctx->method;
 149                 if (!s->method->ssl_new(s))
 150                         return(0);
 151                 }
 152         else
 153 #endif
 154                 s->method->ssl_clear(s);
 155         return(1);
 156         }
 157
 158 /** Used to change an SSL_CTXs default SSL method type */
 159 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
 160         {
 161         STACK_OF(SSL_CIPHER) *sk;
 162
 163         ctx->method=meth;
 164
 165         sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
 166                 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
 167         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
 168                 {
 169                 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
 170                 return(0);
 171                 }
 172         return(1);
 173         }
 174
 175 SSL *SSL_new(SSL_CTX *ctx)
 176         {
 177         SSL *s;
 178
 179         if (ctx == NULL)
 180                 {
 181                 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
 182                 return(NULL);
 183                 }
 184         if (ctx->method == NULL)
 185                 {
 186                 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
 187                 return(NULL);
 188                 }
 189
 190         s=(SSL *)OPENSSL_malloc(sizeof(SSL));
 191         if (s == NULL) goto err;
 192         memset(s,0,sizeof(SSL));
 193
 194         if (ctx->cert != NULL)
 195                 {
 196                 /* Earlier library versions used to copy the pointer to
 197                  * the CERT, not its contents; only when setting new
 198                  * parameters for the per-SSL copy, ssl_cert_new would be
 199                  * called (and the direct reference to the per-SSL_CTX
 200                  * settings would be lost, but those still were indirectly
 201                  * accessed for various purposes, and for that reason they
 202                  * used to be known as s->ctx->default_cert).
 203                  * Now we don't look at the SSL_CTX's CERT after having
 204                  * duplicated it once. */
 205
 206                 s->cert = ssl_cert_dup(ctx->cert);
 207                 if (s->cert == NULL)
 208                         goto err;
 209                 }
 210         else
 211                 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
 212         s->sid_ctx_length=ctx->sid_ctx_length;
 213         memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
 214         s->verify_mode=ctx->verify_mode;
 215         s->verify_depth=ctx->verify_depth;
 216         s->verify_callback=ctx->default_verify_callback;
 217         s->purpose = ctx->purpose;
 218         s->trust = ctx->trust;
 219         CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
 220         s->ctx=ctx;
 221
 222         s->verify_result=X509_V_OK;
 223
 224         s->method=ctx->method;
 225
 226         if (!s->method->ssl_new(s))
 227                 goto err;
 228
 229         s->quiet_shutdown=ctx->quiet_shutdown;
 230         s->references=1;
 231         s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
 232         s->options=ctx->options;
 233         s->mode=ctx->mode;
 234         s->read_ahead=ctx->read_ahead; /* used to happen in SSL_clear */
 235         SSL_clear(s);
 236
 237         CRYPTO_new_ex_data(ssl_meth,s,&s->ex_data);
 238
 239         return(s);
 240 err:
 241         if (s != NULL)
 242                 {
 243                 if (s->cert != NULL)
 244                         ssl_cert_free(s->cert);
 245                 if (s->ctx != NULL)
 246                         SSL_CTX_free(s->ctx); /* decrement reference count */
 247                 OPENSSL_free(s);
 248                 }
 249         SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
 250         return(NULL);
 251         }
 252
 253 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
 254                                    unsigned int sid_ctx_len)
 255     {
 256     if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
 257         {
 258         SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
 259         return 0;
 260         }
 261     ctx->sid_ctx_length=sid_ctx_len;
 262     memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
 263
 264     return 1;
 265     }
 266
 267 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
 268                                unsigned int sid_ctx_len)
 269     {
 270     if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
 271         {
 272         SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
 273         return 0;
 274         }
 275     ssl->sid_ctx_length=sid_ctx_len;
 276     memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
 277
 278     return 1;
 279     }
 280
 281 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
 282 {
 283         if(X509_PURPOSE_get_by_id(purpose) == -1) {
 284                 SSLerr(SSL_F_SSL_CTX_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
 285                 return 0;
 286         }
 287         s->purpose = purpose;
 288         return 1;
 289 }
 290
 291 int SSL_set_purpose(SSL *s, int purpose)
 292 {
 293         if(X509_PURPOSE_get_by_id(purpose) == -1) {
 294                 SSLerr(SSL_F_SSL_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
 295                 return 0;
 296         }
 297         s->purpose = purpose;
 298         return 1;
 299 }
 300
 301 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
 302 {
 303         if(X509_TRUST_get_by_id(trust) == -1) {
 304                 SSLerr(SSL_F_SSL_CTX_SET_TRUST, SSL_R_INVALID_TRUST);
 305                 return 0;
 306         }
 307         s->trust = trust;
 308         return 1;
 309 }
 310
 311 int SSL_set_trust(SSL *s, int trust)
 312 {
 313         if(X509_TRUST_get_by_id(trust) == -1) {
 314                 SSLerr(SSL_F_SSL_SET_TRUST, SSL_R_INVALID_TRUST);
 315                 return 0;
 316         }
 317         s->trust = trust;
 318         return 1;
 319 }
 320
 321 void SSL_free(SSL *s)
 322         {
 323         int i;
 324
 325         if(s == NULL)
 326             return;
 327
 328         i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
 329 #ifdef REF_PRINT
 330         REF_PRINT("SSL",s);
 331 #endif
 332         if (i > 0) return;
 333 #ifdef REF_CHECK
 334         if (i < 0)
 335                 {
 336                 fprintf(stderr,"SSL_free, bad reference count\n");
 337                 abort(); /* ok */
 338                 }
 339 #endif
 340
 341         CRYPTO_free_ex_data(ssl_meth,(char *)s,&s->ex_data);
 342
 343         if (s->bbio != NULL)
 344                 {
 345                 /* If the buffering BIO is in place, pop it off */
 346                 if (s->bbio == s->wbio)
 347                         {
 348                         s->wbio=BIO_pop(s->wbio);
 349                         }
 350                 BIO_free(s->bbio);
 351                 s->bbio=NULL;
 352                 }
 353         if (s->rbio != NULL)
 354                 BIO_free_all(s->rbio);
 355         if ((s->wbio != NULL) && (s->wbio != s->rbio))
 356                 BIO_free_all(s->wbio);
 357
 358         if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
 359
 360         /* add extra stuff */
 361         if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
 362         if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
 363
 364         /* Make the next call work :-) */
 365         if (s->session != NULL)
 366                 {
 367                 ssl_clear_bad_session(s);
 368                 SSL_SESSION_free(s->session);
 369                 }
 370
 371         ssl_clear_cipher_ctx(s);
 372
 373         if (s->cert != NULL) ssl_cert_free(s->cert);
 374         /* Free up if allocated */
 375
 376         if (s->ctx) SSL_CTX_free(s->ctx);
 377
 378         if (s->client_CA != NULL)
 379                 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
 380
 381         if (s->method != NULL) s->method->ssl_free(s);
 382
 383         OPENSSL_free(s);
 384         }
 385
 386 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
 387         {
 388         /* If the output buffering BIO is still in place, remove it
 389          */
 390         if (s->bbio != NULL)
 391                 {
 392                 if (s->wbio == s->bbio)
 393                         {
 394                         s->wbio=s->wbio->next_bio;
 395                         s->bbio->next_bio=NULL;
 396                         }
 397                 }
 398         if ((s->rbio != NULL) && (s->rbio != rbio))
 399                 BIO_free_all(s->rbio);
 400         if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
 401                 BIO_free_all(s->wbio);
 402         s->rbio=rbio;
 403         s->wbio=wbio;
 404         }
 405
 406 BIO *SSL_get_rbio(SSL *s)
 407         { return(s->rbio); }
 408
 409 BIO *SSL_get_wbio(SSL *s)
 410         { return(s->wbio); }
 411
 412 int SSL_get_fd(SSL *s)
 413         {
 414         int ret= -1;
 415         BIO *b,*r;
 416
 417         b=SSL_get_rbio(s);
 418         r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
 419         if (r != NULL)
 420                 BIO_get_fd(r,&ret);
 421         return(ret);
 422         }
 423
 424 #ifndef NO_SOCK
 425 int SSL_set_fd(SSL *s,int fd)
 426         {
 427         int ret=0;
 428         BIO *bio=NULL;
 429
 430         bio=BIO_new(BIO_s_socket());
 431
 432         if (bio == NULL)
 433                 {
 434                 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
 435                 goto err;
 436                 }
 437         BIO_set_fd(bio,fd,BIO_NOCLOSE);
 438         SSL_set_bio(s,bio,bio);
 439         ret=1;
 440 err:
 441         return(ret);
 442         }
 443
 444 int SSL_set_wfd(SSL *s,int fd)
 445         {
 446         int ret=0;
 447         BIO *bio=NULL;
 448
 449         if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
 450                 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
 451                 {
 452                 bio=BIO_new(BIO_s_socket());
 453
 454                 if (bio == NULL)
 455                         { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
 456                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 457                 SSL_set_bio(s,SSL_get_rbio(s),bio);
 458                 }
 459         else
 460                 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
 461         ret=1;
 462 err:
 463         return(ret);
 464         }
 465
 466 int SSL_set_rfd(SSL *s,int fd)
 467         {
 468         int ret=0;
 469         BIO *bio=NULL;
 470
 471         if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
 472                 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
 473                 {
 474                 bio=BIO_new(BIO_s_socket());
 475
 476                 if (bio == NULL)
 477                         {
 478                         SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
 479                         goto err;
 480                         }
 481                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 482                 SSL_set_bio(s,bio,SSL_get_wbio(s));
 483                 }
 484         else
 485                 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
 486         ret=1;
 487 err:
 488         return(ret);
 489         }
 490 #endif
 491
 492
 493 /* return length of latest Finished message we sent, copy to 'buf' */
 494 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
 495         {
 496         size_t ret = 0;
 497
 498         if (s->s3 != NULL)
 499                 {
 500                 ret = s->s3->tmp.finish_md_len;
 501                 if (count > ret)
 502                         count = ret;
 503                 memcpy(buf, s->s3->tmp.finish_md, count);
 504                 }
 505         return ret;
 506         }
 507
 508 /* return length of latest Finished message we expected, copy to 'buf' */
 509 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
 510         {
 511         size_t ret = 0;
 512
 513         if (s->s3 != NULL)
 514                 {
 515                 ret = s->s3->tmp.peer_finish_md_len;
 516                 if (count > ret)
 517                         count = ret;
 518                 memcpy(buf, s->s3->tmp.peer_finish_md, count);
 519                 }
 520         return ret;
 521         }
 522
 523
 524 int SSL_get_verify_mode(SSL *s)
 525         {
 526         return(s->verify_mode);
 527         }
 528
 529 int SSL_get_verify_depth(SSL *s)
 530         {
 531         return(s->verify_depth);
 532         }
 533
 534 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
 535         {
 536         return(s->verify_callback);
 537         }
 538
 539 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
 540         {
 541         return(ctx->verify_mode);
 542         }
 543
 544 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
 545         {
 546         return(ctx->verify_depth);
 547         }
 548
 549 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
 550         {
 551         return(ctx->default_verify_callback);
 552         }
 553
 554 void SSL_set_verify(SSL *s,int mode,
 555                     int (*callback)(int ok,X509_STORE_CTX *ctx))
 556         {
 557         s->verify_mode=mode;
 558         if (callback != NULL)
 559                 s->verify_callback=callback;
 560         }
 561
 562 void SSL_set_verify_depth(SSL *s,int depth)
 563         {
 564         s->verify_depth=depth;
 565         }
 566
 567 void SSL_set_read_ahead(SSL *s,int yes)
 568         {
 569         s->read_ahead=yes;
 570         }
 571
 572 int SSL_get_read_ahead(SSL *s)
 573         {
 574         return(s->read_ahead);
 575         }
 576
 577 int SSL_pending(SSL *s)
 578         {
 579         /* SSL_pending cannot work properly if read-ahead is enabled
 580          * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
 581          * and it is impossible to fix since SSL_pending cannot report
 582          * errors that may be observed while scanning the new data.
 583          * (Note that SSL_pending() is often used as a boolean value,
 584          * so we'd better not return -1.)
 585          */
 586         return(s->method->ssl_pending(s));
 587         }
 588
 589 X509 *SSL_get_peer_certificate(SSL *s)
 590         {
 591         X509 *r;
 592
 593         if ((s == NULL) || (s->session == NULL))
 594                 r=NULL;
 595         else
 596                 r=s->session->peer;
 597
 598         if (r == NULL) return(r);
 599
 600         CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
 601
 602         return(r);
 603         }
 604
 605 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
 606         {
 607         STACK_OF(X509) *r;
 608
 609         if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
 610                 r=NULL;
 611         else
 612                 r=s->session->sess_cert->cert_chain;
 613
 614         /* If we are a client, cert_chain includes the peer's own
 615          * certificate; if we are a server, it does not. */
 616
 617         return(r);
 618         }
 619
 620 /* Now in theory, since the calling process own 't' it should be safe to
 621  * modify.  We need to be able to read f without being hassled */
 622 void SSL_copy_session_id(SSL *t,SSL *f)
 623         {
 624         CERT *tmp;
 625
 626         /* Do we need to to SSL locking? */
 627         SSL_set_session(t,SSL_get_session(f));
 628
 629         /* what if we are setup as SSLv2 but want to talk SSLv3 or
 630          * vice-versa */
 631         if (t->method != f->method)
 632                 {
 633                 t->method->ssl_free(t); /* cleanup current */
 634                 t->method=f->method;    /* change method */
 635                 t->method->ssl_new(t);  /* setup new */
 636                 }
 637
 638         tmp=t->cert;
 639         if (f->cert != NULL)
 640                 {
 641                 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
 642                 t->cert=f->cert;
 643                 }
 644         else
 645                 t->cert=NULL;
 646         if (tmp != NULL) ssl_cert_free(tmp);
 647         SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
 648         }
 649
 650 /* Fix this so it checks all the valid key/cert options */
 651 int SSL_CTX_check_private_key(SSL_CTX *ctx)
 652         {
 653         if (    (ctx == NULL) ||
 654                 (ctx->cert == NULL) ||
 655                 (ctx->cert->key->x509 == NULL))
 656                 {
 657                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 658                 return(0);
 659                 }
 660         if      (ctx->cert->key->privatekey == NULL)
 661                 {
 662                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 663                 return(0);
 664                 }
 665         return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
 666         }
 667
 668 /* Fix this function so that it takes an optional type parameter */
 669 int SSL_check_private_key(SSL *ssl)
 670         {
 671         if (ssl == NULL)
 672                 {
 673                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
 674                 return(0);
 675                 }
 676         if (ssl->cert == NULL)
 677                 {
 678                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 679                 return 0;
 680                 }
 681         if (ssl->cert->key->x509 == NULL)
 682                 {
 683                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 684                 return(0);
 685                 }
 686         if (ssl->cert->key->privatekey == NULL)
 687                 {
 688                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 689                 return(0);
 690                 }
 691         return(X509_check_private_key(ssl->cert->key->x509,
 692                 ssl->cert->key->privatekey));
 693         }
 694
 695 int SSL_accept(SSL *s)
 696         {
 697         if (s->handshake_func == 0)
 698                 /* Not properly initialized yet */
 699                 SSL_set_accept_state(s);
 700
 701         return(s->method->ssl_accept(s));
 702         }
 703
 704 int SSL_connect(SSL *s)
 705         {
 706         if (s->handshake_func == 0)
 707                 /* Not properly initialized yet */
 708                 SSL_set_connect_state(s);
 709
 710         return(s->method->ssl_connect(s));
 711         }
 712
 713 long SSL_get_default_timeout(SSL *s)
 714         {
 715         return(s->method->get_timeout());
 716         }
 717
 718 int SSL_read(SSL *s,char *buf,int num)
 719         {
 720         if (s->handshake_func == 0)
 721                 {
 722                 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
 723                 return -1;
 724                 }
 725
 726         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 727                 {
 728                 s->rwstate=SSL_NOTHING;
 729                 return(0);
 730                 }
 731         return(s->method->ssl_read(s,buf,num));
 732         }
 733
 734 int SSL_peek(SSL *s,char *buf,int num)
 735         {
 736         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 737                 {
 738                 return(0);
 739                 }
 740         return(s->method->ssl_peek(s,buf,num));
 741         }
 742
 743 int SSL_write(SSL *s,const char *buf,int num)
 744         {
 745         if (s->handshake_func == 0)
 746                 {
 747                 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
 748                 return -1;
 749                 }
 750
 751         if (s->shutdown & SSL_SENT_SHUTDOWN)
 752                 {
 753                 s->rwstate=SSL_NOTHING;
 754                 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
 755                 return(-1);
 756                 }
 757         return(s->method->ssl_write(s,buf,num));
 758         }
 759
 760 int SSL_shutdown(SSL *s)
 761         {
 762         /* Note that this function behaves differently from what one might
 763          * expect.  Return values are 0 for no success (yet),
 764          * 1 for success; but calling it once is usually not enough,
 765          * even if blocking I/O is used (see ssl3_shutdown).
 766          */
 767
 768         if (s->handshake_func == 0)
 769                 {
 770                 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
 771                 return -1;
 772                 }
 773
 774         if ((s != NULL) && !SSL_in_init(s))
 775                 return(s->method->ssl_shutdown(s));
 776         else
 777                 return(1);
 778         }
 779
 780 int SSL_renegotiate(SSL *s)
 781         {
 782         s->new_session=1;
 783         return(s->method->ssl_renegotiate(s));
 784         }
 785
 786 long SSL_ctrl(SSL *s,int cmd,long larg,char *parg)
 787         {
 788         long l;
 789
 790         switch (cmd)
 791                 {
 792         case SSL_CTRL_GET_READ_AHEAD:
 793                 return(s->read_ahead);
 794         case SSL_CTRL_SET_READ_AHEAD:
 795                 l=s->read_ahead;
 796                 s->read_ahead=larg;
 797                 return(l);
 798         case SSL_CTRL_OPTIONS:
 799                 return(s->options|=larg);
 800         case SSL_CTRL_MODE:
 801                 return(s->mode|=larg);
 802         default:
 803                 return(s->method->ssl_ctrl(s,cmd,larg,parg));
 804                 }
 805         }
 806
 807 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
 808         {
 809         switch(cmd)
 810                 {
 811         default:
 812                 return(s->method->ssl_callback_ctrl(s,cmd,fp));
 813                 }
 814         }
 815
 816 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
 817         {
 818         return ctx->sessions;
 819         }
 820
 821 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
 822         {
 823         long l;
 824
 825         switch (cmd)
 826                 {
 827         case SSL_CTRL_GET_READ_AHEAD:
 828                 return(ctx->read_ahead);
 829         case SSL_CTRL_SET_READ_AHEAD:
 830                 l=ctx->read_ahead;
 831                 ctx->read_ahead=larg;
 832                 return(l);
 833
 834         case SSL_CTRL_SET_SESS_CACHE_SIZE:
 835                 l=ctx->session_cache_size;
 836                 ctx->session_cache_size=larg;
 837                 return(l);
 838         case SSL_CTRL_GET_SESS_CACHE_SIZE:
 839                 return(ctx->session_cache_size);
 840         case SSL_CTRL_SET_SESS_CACHE_MODE:
 841                 l=ctx->session_cache_mode;
 842                 ctx->session_cache_mode=larg;
 843                 return(l);
 844         case SSL_CTRL_GET_SESS_CACHE_MODE:
 845                 return(ctx->session_cache_mode);
 846
 847         case SSL_CTRL_SESS_NUMBER:
 848                 return(ctx->sessions->num_items);
 849         case SSL_CTRL_SESS_CONNECT:
 850                 return(ctx->stats.sess_connect);
 851         case SSL_CTRL_SESS_CONNECT_GOOD:
 852                 return(ctx->stats.sess_connect_good);
 853         case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
 854                 return(ctx->stats.sess_connect_renegotiate);
 855         case SSL_CTRL_SESS_ACCEPT:
 856                 return(ctx->stats.sess_accept);
 857         case SSL_CTRL_SESS_ACCEPT_GOOD:
 858                 return(ctx->stats.sess_accept_good);
 859         case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
 860                 return(ctx->stats.sess_accept_renegotiate);
 861         case SSL_CTRL_SESS_HIT:
 862                 return(ctx->stats.sess_hit);
 863         case SSL_CTRL_SESS_CB_HIT:
 864                 return(ctx->stats.sess_cb_hit);
 865         case SSL_CTRL_SESS_MISSES:
 866                 return(ctx->stats.sess_miss);
 867         case SSL_CTRL_SESS_TIMEOUTS:
 868                 return(ctx->stats.sess_timeout);
 869         case SSL_CTRL_SESS_CACHE_FULL:
 870                 return(ctx->stats.sess_cache_full);
 871         case SSL_CTRL_OPTIONS:
 872                 return(ctx->options|=larg);
 873         case SSL_CTRL_MODE:
 874                 return(ctx->mode|=larg);
 875         default:
 876                 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
 877                 }
 878         }
 879
 880 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
 881         {
 882         switch(cmd)
 883                 {
 884         default:
 885                 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
 886                 }
 887         }
 888
 889 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
 890         {
 891         long l;
 892
 893         l=a->id-b->id;
 894         if (l == 0L)
 895                 return(0);
 896         else
 897                 return((l > 0)?1:-1);
 898         }
 899
 900 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
 901                         const SSL_CIPHER * const *bp)
 902         {
 903         long l;
 904
 905         l=(*ap)->id-(*bp)->id;
 906         if (l == 0L)
 907                 return(0);
 908         else
 909                 return((l > 0)?1:-1);
 910         }
 911
 912 /** return a STACK of the ciphers available for the SSL and in order of
 913  * preference */
 914 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
 915         {
 916         if ((s != NULL) && (s->cipher_list != NULL))
 917                 {
 918                 return(s->cipher_list);
 919                 }
 920         else if ((s->ctx != NULL) &&
 921                 (s->ctx->cipher_list != NULL))
 922                 {
 923                 return(s->ctx->cipher_list);
 924                 }
 925         return(NULL);
 926         }
 927
 928 /** return a STACK of the ciphers available for the SSL and in order of
 929  * algorithm id */
 930 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
 931         {
 932         if ((s != NULL) && (s->cipher_list_by_id != NULL))
 933                 {
 934                 return(s->cipher_list_by_id);
 935                 }
 936         else if ((s != NULL) && (s->ctx != NULL) &&
 937                 (s->ctx->cipher_list_by_id != NULL))
 938                 {
 939                 return(s->ctx->cipher_list_by_id);
 940                 }
 941         return(NULL);
 942         }
 943
 944 /** The old interface to get the same thing as SSL_get_ciphers() */
 945 const char *SSL_get_cipher_list(SSL *s,int n)
 946         {
 947         SSL_CIPHER *c;
 948         STACK_OF(SSL_CIPHER) *sk;
 949
 950         if (s == NULL) return(NULL);
 951         sk=SSL_get_ciphers(s);
 952         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
 953                 return(NULL);
 954         c=sk_SSL_CIPHER_value(sk,n);
 955         if (c == NULL) return(NULL);
 956         return(c->name);
 957         }
 958
 959 /** specify the ciphers to be used by default by the SSL_CTX */
 960 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
 961         {
 962         STACK_OF(SSL_CIPHER) *sk;
 963
 964         sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
 965                 &ctx->cipher_list_by_id,str);
 966 /* XXXX */
 967         return((sk == NULL)?0:1);
 968         }
 969
 970 /** specify the ciphers to be used by the SSL */
 971 int SSL_set_cipher_list(SSL *s,const char *str)
 972         {
 973         STACK_OF(SSL_CIPHER) *sk;
 974
 975         sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
 976                 &s->cipher_list_by_id,str);
 977 /* XXXX */
 978         return((sk == NULL)?0:1);
 979         }
 980
 981 /* works well for SSLv2, not so good for SSLv3 */
 982 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
 983         {
 984         char *p;
 985         const char *cp;
 986         STACK_OF(SSL_CIPHER) *sk;
 987         SSL_CIPHER *c;
 988         int i;
 989
 990         if ((s->session == NULL) || (s->session->ciphers == NULL) ||
 991                 (len < 2))
 992                 return(NULL);
 993
 994         p=buf;
 995         sk=s->session->ciphers;
 996         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
 997                 {
 998                 /* Decrement for either the ':' or a '\0' */
 999                 len--;
1000                 c=sk_SSL_CIPHER_value(sk,i);
1001                 for (cp=c->name; *cp; )
1002                         {
1003                         if (len-- == 0)
1004                                 {
1005                                 *p='\0';
1006                                 return(buf);
1007                                 }
1008                         else
1009                                 *(p++)= *(cp++);
1010                         }
1011                 *(p++)=':';
1012                 }
1013         p[-1]='\0';
1014         return(buf);
1015         }
1016
1017 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
1018         {
1019         int i,j=0;
1020         SSL_CIPHER *c;
1021         unsigned char *q;
1022
1023         if (sk == NULL) return(0);
1024         q=p;
1025
1026         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1027                 {
1028                 c=sk_SSL_CIPHER_value(sk,i);
1029                 j=ssl_put_cipher_by_char(s,c,p);
1030                 p+=j;
1031                 }
1032         return(p-q);
1033         }
1034
1035 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1036                                                STACK_OF(SSL_CIPHER) **skp)
1037         {
1038         SSL_CIPHER *c;
1039         STACK_OF(SSL_CIPHER) *sk;
1040         int i,n;
1041
1042         n=ssl_put_cipher_by_char(s,NULL,NULL);
1043         if ((num%n) != 0)
1044                 {
1045                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1046                 return(NULL);
1047                 }
1048         if ((skp == NULL) || (*skp == NULL))
1049                 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1050         else
1051                 {
1052                 sk= *skp;
1053                 sk_SSL_CIPHER_zero(sk);
1054                 }
1055
1056         for (i=0; i<num; i+=n)
1057                 {
1058                 c=ssl_get_cipher_by_char(s,p);
1059                 p+=n;
1060                 if (c != NULL)
1061                         {
1062                         if (!sk_SSL_CIPHER_push(sk,c))
1063                                 {
1064                                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1065                                 goto err;
1066                                 }
1067                         }
1068                 }
1069
1070         if (skp != NULL)
1071                 *skp=sk;
1072         return(sk);
1073 err:
1074         if ((skp == NULL) || (*skp == NULL))
1075                 sk_SSL_CIPHER_free(sk);
1076         return(NULL);
1077         }
1078
1079 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1080         {
1081         unsigned long l;
1082
1083         l=(unsigned long)
1084                 ((unsigned int) a->session_id[0]     )|
1085                 ((unsigned int) a->session_id[1]<< 8L)|
1086                 ((unsigned long)a->session_id[2]<<16L)|
1087                 ((unsigned long)a->session_id[3]<<24L);
1088         return(l);
1089         }
1090
1091 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1092         {
1093         if (a->ssl_version != b->ssl_version)
1094                 return(1);
1095         if (a->session_id_length != b->session_id_length)
1096                 return(1);
1097         return(memcmp(a->session_id,b->session_id,a->session_id_length));
1098         }
1099
1100 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1101         {
1102         SSL_CTX *ret=NULL;
1103
1104         if (meth == NULL)
1105                 {
1106                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1107                 return(NULL);
1108                 }
1109
1110         if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1111                 {
1112                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1113                 goto err;
1114                 }
1115         ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1116         if (ret == NULL)
1117                 goto err;
1118
1119         memset(ret,0,sizeof(SSL_CTX));
1120
1121         ret->method=meth;
1122
1123         ret->cert_store=NULL;
1124         ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1125         ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1126         ret->session_cache_head=NULL;
1127         ret->session_cache_tail=NULL;
1128
1129         /* We take the system default */
1130         ret->session_timeout=meth->get_timeout();
1131
1132         ret->new_session_cb=NULL;
1133         ret->remove_session_cb=NULL;
1134         ret->get_session_cb=NULL;
1135
1136         memset((char *)&ret->stats,0,sizeof(ret->stats));
1137
1138         ret->references=1;
1139         ret->quiet_shutdown=0;
1140
1141 /*      ret->cipher=NULL;*/
1142 /*      ret->s2->challenge=NULL;
1143         ret->master_key=NULL;
1144         ret->key_arg=NULL;
1145         ret->s2->conn_id=NULL; */
1146
1147         ret->info_callback=NULL;
1148
1149         ret->app_verify_callback=NULL;
1150         ret->app_verify_arg=NULL;
1151
1152         ret->read_ahead=0;
1153         ret->verify_mode=SSL_VERIFY_NONE;
1154         ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1155         ret->default_verify_callback=NULL;
1156         if ((ret->cert=ssl_cert_new()) == NULL)
1157                 goto err;
1158
1159         ret->default_passwd_callback=NULL;
1160         ret->default_passwd_callback_userdata=NULL;
1161         ret->client_cert_cb=NULL;
1162
1163         ret->sessions=lh_new(SSL_SESSION_hash,SSL_SESSION_cmp);
1164         if (ret->sessions == NULL) goto err;
1165         ret->cert_store=X509_STORE_new();
1166         if (ret->cert_store == NULL) goto err;
1167
1168         ssl_create_cipher_list(ret->method,
1169                 &ret->cipher_list,&ret->cipher_list_by_id,
1170                 SSL_DEFAULT_CIPHER_LIST);
1171         if (ret->cipher_list == NULL
1172             || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1173                 {
1174                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1175                 goto err2;
1176                 }
1177
1178         if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1179                 {
1180                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1181                 goto err2;
1182                 }
1183         if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1184                 {
1185                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1186                 goto err2;
1187                 }
1188         if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1189                 {
1190                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1191                 goto err2;
1192                 }
1193
1194         if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1195                 goto err;
1196
1197         CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data);
1198
1199         ret->extra_certs=NULL;
1200         ret->comp_methods=SSL_COMP_get_compression_methods();
1201
1202         return(ret);
1203 err:
1204         SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1205 err2:
1206         if (ret != NULL) SSL_CTX_free(ret);
1207         return(NULL);
1208         }
1209
1210 static void SSL_COMP_free(SSL_COMP *comp)
1211     { OPENSSL_free(comp); }
1212
1213 void SSL_CTX_free(SSL_CTX *a)
1214         {
1215         int i;
1216
1217         if (a == NULL) return;
1218
1219         i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1220 #ifdef REF_PRINT
1221         REF_PRINT("SSL_CTX",a);
1222 #endif
1223         if (i > 0) return;
1224 #ifdef REF_CHECK
1225         if (i < 0)
1226                 {
1227                 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1228                 abort(); /* ok */
1229                 }
1230 #endif
1231         CRYPTO_free_ex_data(ssl_ctx_meth,(char *)a,&a->ex_data);
1232
1233         if (a->sessions != NULL)
1234                 {
1235                 SSL_CTX_flush_sessions(a,0);
1236                 lh_free(a->sessions);
1237                 }
1238         if (a->cert_store != NULL)
1239                 X509_STORE_free(a->cert_store);
1240         if (a->cipher_list != NULL)
1241                 sk_SSL_CIPHER_free(a->cipher_list);
1242         if (a->cipher_list_by_id != NULL)
1243                 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1244         if (a->cert != NULL)
1245                 ssl_cert_free(a->cert);
1246         if (a->client_CA != NULL)
1247                 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1248         if (a->extra_certs != NULL)
1249                 sk_X509_pop_free(a->extra_certs,X509_free);
1250 #if 0 /* This should never be done, since it removes a global database */
1251         if (a->comp_methods != NULL)
1252                 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1253 #else
1254         a->comp_methods = NULL;
1255 #endif
1256         OPENSSL_free(a);
1257         }
1258
1259 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1260         {
1261         ctx->default_passwd_callback=cb;
1262         }
1263
1264 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1265         {
1266         ctx->default_passwd_callback_userdata=u;
1267         }
1268
1269 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg)
1270         {
1271         /* now
1272          *     int (*cb)(X509_STORE_CTX *),
1273          * but should be
1274          *     int (*cb)(X509_STORE_CTX *, void *arg)
1275          */
1276         ctx->app_verify_callback=cb;
1277         ctx->app_verify_arg=arg; /* never used */
1278         }
1279
1280 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1281         {
1282         ctx->verify_mode=mode;
1283         ctx->default_verify_callback=cb;
1284         /* This needs cleaning up EAY EAY EAY */
1285         X509_STORE_set_verify_cb_func(ctx->cert_store,cb);
1286         }
1287
1288 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1289         {
1290         ctx->verify_depth=depth;
1291         }
1292
1293 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1294         {
1295         CERT_PKEY *cpk;
1296         int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1297         int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1298         int rsa_tmp_export,dh_tmp_export,kl;
1299         unsigned long mask,emask;
1300
1301         if (c == NULL) return;
1302
1303         kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1304
1305 #ifndef NO_RSA
1306         rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1307         rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1308                 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1309 #else
1310         rsa_tmp=rsa_tmp_export=0;
1311 #endif
1312 #ifndef NO_DH
1313         dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1314         dh_tmp_export=(c->dh_tmp_cb != NULL ||
1315                 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1316 #else
1317         dh_tmp=dh_tmp_export=0;
1318 #endif
1319
1320         cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1321         rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1322         rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1323         cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1324         rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1325         cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1326         dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1327         cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1328         dh_rsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
1329         dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1330         cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1331 /* FIX THIS EAY EAY EAY */
1332         dh_dsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
1333         dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1334
1335         mask=0;
1336         emask=0;
1337
1338 #ifdef CIPHER_DEBUG
1339         printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1340                 rsa_tmp,rsa_tmp_export,dh_tmp,
1341                 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1342 #endif
1343
1344         if (rsa_enc || (rsa_tmp && rsa_sign))
1345                 mask|=SSL_kRSA;
1346         if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1347                 emask|=SSL_kRSA;
1348
1349 #if 0
1350         /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1351         if (    (dh_tmp || dh_rsa || dh_dsa) &&
1352                 (rsa_enc || rsa_sign || dsa_sign))
1353                 mask|=SSL_kEDH;
1354         if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1355                 (rsa_enc || rsa_sign || dsa_sign))
1356                 emask|=SSL_kEDH;
1357 #endif
1358
1359         if (dh_tmp_export)
1360                 emask|=SSL_kEDH;
1361
1362         if (dh_tmp)
1363                 mask|=SSL_kEDH;
1364
1365         if (dh_rsa) mask|=SSL_kDHr;
1366         if (dh_rsa_export) emask|=SSL_kDHr;
1367
1368         if (dh_dsa) mask|=SSL_kDHd;
1369         if (dh_dsa_export) emask|=SSL_kDHd;
1370
1371         if (rsa_enc || rsa_sign)
1372                 {
1373                 mask|=SSL_aRSA;
1374                 emask|=SSL_aRSA;
1375                 }
1376
1377         if (dsa_sign)
1378                 {
1379                 mask|=SSL_aDSS;
1380                 emask|=SSL_aDSS;
1381                 }
1382
1383         mask|=SSL_aNULL;
1384         emask|=SSL_aNULL;
1385
1386         c->mask=mask;
1387         c->export_mask=emask;
1388         c->valid=1;
1389         }
1390
1391 /* THIS NEEDS CLEANING UP */
1392 X509 *ssl_get_server_send_cert(SSL *s)
1393         {
1394         unsigned long alg,mask,kalg;
1395         CERT *c;
1396         int i,is_export;
1397
1398         c=s->cert;
1399         ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1400         alg=s->s3->tmp.new_cipher->algorithms;
1401         is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1402         mask=is_export?c->export_mask:c->mask;
1403         kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1404
1405         if      (kalg & SSL_kDHr)
1406                 i=SSL_PKEY_DH_RSA;
1407         else if (kalg & SSL_kDHd)
1408                 i=SSL_PKEY_DH_DSA;
1409         else if (kalg & SSL_aDSS)
1410                 i=SSL_PKEY_DSA_SIGN;
1411         else if (kalg & SSL_aRSA)
1412                 {
1413                 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1414                         i=SSL_PKEY_RSA_SIGN;
1415                 else
1416                         i=SSL_PKEY_RSA_ENC;
1417                 }
1418         else /* if (kalg & SSL_aNULL) */
1419                 {
1420                 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,SSL_R_INTERNAL_ERROR);
1421                 return(NULL);
1422                 }
1423         if (c->pkeys[i].x509 == NULL) return(NULL);
1424         return(c->pkeys[i].x509);
1425         }
1426
1427 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1428         {
1429         unsigned long alg;
1430         CERT *c;
1431
1432         alg=cipher->algorithms;
1433         c=s->cert;
1434
1435         if ((alg & SSL_aDSS) &&
1436                 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1437                 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1438         else if (alg & SSL_aRSA)
1439                 {
1440                 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1441                         return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1442                 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1443                         return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1444                 else
1445                         return(NULL);
1446                 }
1447         else /* if (alg & SSL_aNULL) */
1448                 {
1449                 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,SSL_R_INTERNAL_ERROR);
1450                 return(NULL);
1451                 }
1452         }
1453
1454 void ssl_update_cache(SSL *s,int mode)
1455         {
1456         int i;
1457
1458         /* If the session_id_length is 0, we are not supposed to cache it,
1459          * and it would be rather hard to do anyway :-) */
1460         if (s->session->session_id_length == 0) return;
1461
1462         if ((s->ctx->session_cache_mode & mode)
1463                 && (!s->hit)
1464                 && SSL_CTX_add_session(s->ctx,s->session)
1465                 && (s->ctx->new_session_cb != NULL))
1466                 {
1467                 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1468                 if (!s->ctx->new_session_cb(s,s->session))
1469                         SSL_SESSION_free(s->session);
1470                 }
1471
1472         /* auto flush every 255 connections */
1473         i=s->ctx->session_cache_mode;
1474         if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1475                 ((i & mode) == mode))
1476                 {
1477                 if (  (((mode & SSL_SESS_CACHE_CLIENT)
1478                         ?s->ctx->stats.sess_connect_good
1479                         :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1480                         {
1481                         SSL_CTX_flush_sessions(s->ctx,time(NULL));
1482                         }
1483                 }
1484         }
1485
1486 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1487         {
1488         return(s->method);
1489         }
1490
1491 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1492         {
1493         int conn= -1;
1494         int ret=1;
1495
1496         if (s->method != meth)
1497                 {
1498                 if (s->handshake_func != NULL)
1499                         conn=(s->handshake_func == s->method->ssl_connect);
1500
1501                 if (s->method->version == meth->version)
1502                         s->method=meth;
1503                 else
1504                         {
1505                         s->method->ssl_free(s);
1506                         s->method=meth;
1507                         ret=s->method->ssl_new(s);
1508                         }
1509
1510                 if (conn == 1)
1511                         s->handshake_func=meth->ssl_connect;
1512                 else if (conn == 0)
1513                         s->handshake_func=meth->ssl_accept;
1514                 }
1515         return(ret);
1516         }
1517
1518 int SSL_get_error(SSL *s,int i)
1519         {
1520         int reason;
1521         unsigned long l;
1522         BIO *bio;
1523
1524         if (i > 0) return(SSL_ERROR_NONE);
1525
1526         /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1527          * etc, where we do encode the error */
1528         if ((l=ERR_peek_error()) != 0)
1529                 {
1530                 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1531                         return(SSL_ERROR_SYSCALL);
1532                 else
1533                         return(SSL_ERROR_SSL);
1534                 }
1535
1536         if ((i < 0) && SSL_want_read(s))
1537                 {
1538                 bio=SSL_get_rbio(s);
1539                 if (BIO_should_read(bio))
1540                         return(SSL_ERROR_WANT_READ);
1541                 else if (BIO_should_write(bio))
1542                         /* This one doesn't make too much sense ... We never try
1543                          * to write to the rbio, and an application program where
1544                          * rbio and wbio are separate couldn't even know what it
1545                          * should wait for.
1546                          * However if we ever set s->rwstate incorrectly
1547                          * (so that we have SSL_want_read(s) instead of
1548                          * SSL_want_write(s)) and rbio and wbio *are* the same,
1549                          * this test works around that bug; so it might be safer
1550                          * to keep it. */
1551                         return(SSL_ERROR_WANT_WRITE);
1552                 else if (BIO_should_io_special(bio))
1553                         {
1554                         reason=BIO_get_retry_reason(bio);
1555                         if (reason == BIO_RR_CONNECT)
1556                                 return(SSL_ERROR_WANT_CONNECT);
1557                         else if (reason == BIO_RR_ACCEPT)
1558                                 return(SSL_ERROR_WANT_ACCEPT);
1559                         else
1560                                 return(SSL_ERROR_SYSCALL); /* unknown */
1561                         }
1562                 }
1563
1564         if ((i < 0) && SSL_want_write(s))
1565                 {
1566                 bio=SSL_get_wbio(s);
1567                 if (BIO_should_write(bio))
1568                         return(SSL_ERROR_WANT_WRITE);
1569                 else if (BIO_should_read(bio))
1570                         /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1571                         return(SSL_ERROR_WANT_READ);
1572                 else if (BIO_should_io_special(bio))
1573                         {
1574                         reason=BIO_get_retry_reason(bio);
1575                         if (reason == BIO_RR_CONNECT)
1576                                 return(SSL_ERROR_WANT_CONNECT);
1577                         else if (reason == BIO_RR_ACCEPT)
1578                                 return(SSL_ERROR_WANT_ACCEPT);
1579                         else
1580                                 return(SSL_ERROR_SYSCALL);
1581                         }
1582                 }
1583         if ((i < 0) && SSL_want_x509_lookup(s))
1584                 {
1585                 return(SSL_ERROR_WANT_X509_LOOKUP);
1586                 }
1587
1588         if (i == 0)
1589                 {
1590                 if (s->version == SSL2_VERSION)
1591                         {
1592                         /* assume it is the socket being closed */
1593                         return(SSL_ERROR_ZERO_RETURN);
1594                         }
1595                 else
1596                         {
1597                         if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1598                                 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1599                                 return(SSL_ERROR_ZERO_RETURN);
1600                         }
1601                 }
1602         return(SSL_ERROR_SYSCALL);
1603         }
1604
1605 int SSL_do_handshake(SSL *s)
1606         {
1607         int ret=1;
1608
1609         if (s->handshake_func == NULL)
1610                 {
1611                 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1612                 return(-1);
1613                 }
1614
1615         s->method->ssl_renegotiate_check(s);
1616
1617         if (SSL_in_init(s) || SSL_in_before(s))
1618                 {
1619                 ret=s->handshake_func(s);
1620                 }
1621         return(ret);
1622         }
1623
1624 /* For the next 2 functions, SSL_clear() sets shutdown and so
1625  * one of these calls will reset it */
1626 void SSL_set_accept_state(SSL *s)
1627         {
1628         s->server=1;
1629         s->shutdown=0;
1630         s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1631         s->handshake_func=s->method->ssl_accept;
1632         /* clear the current cipher */
1633         ssl_clear_cipher_ctx(s);
1634         }
1635
1636 void SSL_set_connect_state(SSL *s)
1637         {
1638         s->server=0;
1639         s->shutdown=0;
1640         s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1641         s->handshake_func=s->method->ssl_connect;
1642         /* clear the current cipher */
1643         ssl_clear_cipher_ctx(s);
1644         }
1645
1646 int ssl_undefined_function(SSL *s)
1647         {
1648         SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1649         return(0);
1650         }
1651
1652 SSL_METHOD *ssl_bad_method(int ver)
1653         {
1654         SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1655         return(NULL);
1656         }
1657
1658 const char *SSL_get_version(SSL *s)
1659         {
1660         if (s->version == TLS1_VERSION)
1661                 return("TLSv1");
1662         else if (s->version == SSL3_VERSION)
1663                 return("SSLv3");
1664         else if (s->version == SSL2_VERSION)
1665                 return("SSLv2");
1666         else
1667                 return("unknown");
1668         }
1669
1670 SSL *SSL_dup(SSL *s)
1671         {
1672         STACK_OF(X509_NAME) *sk;
1673         X509_NAME *xn;
1674         SSL *ret;
1675         int i;
1676
1677         if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
1678             return(NULL);
1679
1680         if (s->session != NULL)
1681                 {
1682                 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
1683                 SSL_copy_session_id(ret,s);
1684                 }
1685         else
1686                 {
1687                 /* No session has been established yet, so we have to expect
1688                  * that s->cert or ret->cert will be changed later --
1689                  * they should not both point to the same object,
1690                  * and thus we can't use SSL_copy_session_id. */
1691
1692                 ret->method = s->method;
1693                 ret->method->ssl_new(ret);
1694
1695                 if (s->cert != NULL)
1696                         {
1697                         ret->cert = ssl_cert_dup(s->cert);
1698                         if (ret->cert == NULL)
1699                                 goto err;
1700                         }
1701
1702                 SSL_set_session_id_context(ret,
1703                         s->sid_ctx, s->sid_ctx_length);
1704                 }
1705
1706         SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1707         SSL_set_verify(ret,SSL_get_verify_mode(s),
1708                 SSL_get_verify_callback(s));
1709         SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
1710
1711         SSL_set_info_callback(ret,SSL_get_info_callback(s));
1712
1713         ret->debug=s->debug;
1714         ret->options=s->options;
1715
1716         /* copy app data, a little dangerous perhaps */
1717         if (!CRYPTO_dup_ex_data(ssl_meth,&ret->ex_data,&s->ex_data))
1718                 goto err;
1719
1720         /* setup rbio, and wbio */
1721         if (s->rbio != NULL)
1722                 {
1723                 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1724                         goto err;
1725                 }
1726         if (s->wbio != NULL)
1727                 {
1728                 if (s->wbio != s->rbio)
1729                         {
1730                         if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1731                                 goto err;
1732                         }
1733                 else
1734                         ret->wbio=ret->rbio;
1735                 }
1736
1737         /* dup the cipher_list and cipher_list_by_id stacks */
1738         if (s->cipher_list != NULL)
1739                 {
1740                 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
1741                         goto err;
1742                 }
1743         if (s->cipher_list_by_id != NULL)
1744                 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
1745                         == NULL)
1746                         goto err;
1747
1748         /* Dup the client_CA list */
1749         if (s->client_CA != NULL)
1750                 {
1751                 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
1752                 ret->client_CA=sk;
1753                 for (i=0; i<sk_X509_NAME_num(sk); i++)
1754                         {
1755                         xn=sk_X509_NAME_value(sk,i);
1756                         if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
1757                                 {
1758                                 X509_NAME_free(xn);
1759                                 goto err;
1760                                 }
1761                         }
1762                 }
1763
1764         ret->shutdown=s->shutdown;
1765         ret->state=s->state;
1766         ret->handshake_func=s->handshake_func;
1767         ret->server=s->server;
1768
1769         if (0)
1770                 {
1771 err:
1772                 if (ret != NULL) SSL_free(ret);
1773                 ret=NULL;
1774                 }
1775         return(ret);
1776         }
1777
1778 void ssl_clear_cipher_ctx(SSL *s)
1779         {
1780         if (s->enc_read_ctx != NULL)
1781                 {
1782                 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
1783                 OPENSSL_free(s->enc_read_ctx);
1784                 s->enc_read_ctx=NULL;
1785                 }
1786         if (s->enc_write_ctx != NULL)
1787                 {
1788                 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
1789                 OPENSSL_free(s->enc_write_ctx);
1790                 s->enc_write_ctx=NULL;
1791                 }
1792         if (s->expand != NULL)
1793                 {
1794                 COMP_CTX_free(s->expand);
1795                 s->expand=NULL;
1796                 }
1797         if (s->compress != NULL)
1798                 {
1799                 COMP_CTX_free(s->compress);
1800                 s->compress=NULL;
1801                 }
1802         }
1803
1804 /* Fix this function so that it takes an optional type parameter */
1805 X509 *SSL_get_certificate(SSL *s)
1806         {
1807         if (s->cert != NULL)
1808                 return(s->cert->key->x509);
1809         else
1810                 return(NULL);
1811         }
1812
1813 /* Fix this function so that it takes an optional type parameter */
1814 EVP_PKEY *SSL_get_privatekey(SSL *s)
1815         {
1816         if (s->cert != NULL)
1817                 return(s->cert->key->privatekey);
1818         else
1819                 return(NULL);
1820         }
1821
1822 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
1823         {
1824         if ((s->session != NULL) && (s->session->cipher != NULL))
1825                 return(s->session->cipher);
1826         return(NULL);
1827         }
1828
1829 int ssl_init_wbio_buffer(SSL *s,int push)
1830         {
1831         BIO *bbio;
1832
1833         if (s->bbio == NULL)
1834                 {
1835                 bbio=BIO_new(BIO_f_buffer());
1836                 if (bbio == NULL) return(0);
1837                 s->bbio=bbio;
1838                 }
1839         else
1840                 {
1841                 bbio=s->bbio;
1842                 if (s->bbio == s->wbio)
1843                         s->wbio=BIO_pop(s->wbio);
1844                 }
1845         (void)BIO_reset(bbio);
1846 /*      if (!BIO_set_write_buffer_size(bbio,16*1024)) */
1847         if (!BIO_set_read_buffer_size(bbio,1))
1848                 {
1849                 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
1850                 return(0);
1851                 }
1852         if (push)
1853                 {
1854                 if (s->wbio != bbio)
1855                         s->wbio=BIO_push(bbio,s->wbio);
1856                 }
1857         else
1858                 {
1859                 if (s->wbio == bbio)
1860                         s->wbio=BIO_pop(bbio);
1861                 }
1862         return(1);
1863         }
1864
1865 void ssl_free_wbio_buffer(SSL *s)
1866         {
1867         if (s->bbio == NULL) return;
1868
1869         if (s->bbio == s->wbio)
1870                 {
1871                 /* remove buffering */
1872                 s->wbio=BIO_pop(s->wbio);
1873 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
1874                 assert(s->wbio != NULL);
1875 #endif
1876         }
1877         BIO_free(s->bbio);
1878         s->bbio=NULL;
1879         }
1880
1881 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
1882         {
1883         ctx->quiet_shutdown=mode;
1884         }
1885
1886 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
1887         {
1888         return(ctx->quiet_shutdown);
1889         }
1890
1891 void SSL_set_quiet_shutdown(SSL *s,int mode)
1892         {
1893         s->quiet_shutdown=mode;
1894         }
1895
1896 int SSL_get_quiet_shutdown(SSL *s)
1897         {
1898         return(s->quiet_shutdown);
1899         }
1900
1901 void SSL_set_shutdown(SSL *s,int mode)
1902         {
1903         s->shutdown=mode;
1904         }
1905
1906 int SSL_get_shutdown(SSL *s)
1907         {
1908         return(s->shutdown);
1909         }
1910
1911 int SSL_version(SSL *s)
1912         {
1913         return(s->version);
1914         }
1915
1916 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
1917         {
1918         return(ssl->ctx);
1919         }
1920
1921 #ifndef NO_STDIO
1922 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
1923         {
1924         return(X509_STORE_set_default_paths(ctx->cert_store));
1925         }
1926
1927 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
1928                 const char *CApath)
1929         {
1930         return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
1931         }
1932 #endif
1933
1934 void SSL_set_info_callback(SSL *ssl,void (*cb)())
1935         {
1936         ssl->info_callback=cb;
1937         }
1938
1939 void (*SSL_get_info_callback(SSL *ssl))(void)
1940         {
1941         return((void (*)())ssl->info_callback);
1942         }
1943
1944 int SSL_state(SSL *ssl)
1945         {
1946         return(ssl->state);
1947         }
1948
1949 void SSL_set_verify_result(SSL *ssl,long arg)
1950         {
1951         ssl->verify_result=arg;
1952         }
1953
1954 long SSL_get_verify_result(SSL *ssl)
1955         {
1956         return(ssl->verify_result);
1957         }
1958
1959 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
1960                          CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
1961         {
1962         ssl_meth_num++;
1963         return(CRYPTO_get_ex_new_index(ssl_meth_num-1,
1964                 &ssl_meth,argl,argp,new_func,dup_func,free_func));
1965         }
1966
1967 int SSL_set_ex_data(SSL *s,int idx,void *arg)
1968         {
1969         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
1970         }
1971
1972 void *SSL_get_ex_data(SSL *s,int idx)
1973         {
1974         return(CRYPTO_get_ex_data(&s->ex_data,idx));
1975         }
1976
1977 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
1978                              CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
1979         {
1980         ssl_ctx_meth_num++;
1981         return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1,
1982                 &ssl_ctx_meth,argl,argp,new_func,dup_func,free_func));
1983         }
1984
1985 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
1986         {
1987         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
1988         }
1989
1990 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
1991         {
1992         return(CRYPTO_get_ex_data(&s->ex_data,idx));
1993         }
1994
1995 int ssl_ok(SSL *s)
1996         {
1997         return(1);
1998         }
1999
2000 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
2001         {
2002         return(ctx->cert_store);
2003         }
2004
2005 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2006         {
2007         if (ctx->cert_store != NULL)
2008                 X509_STORE_free(ctx->cert_store);
2009         ctx->cert_store=store;
2010         }
2011
2012 int SSL_want(SSL *s)
2013         {
2014         return(s->rwstate);
2015         }
2016
2017 /*!
2018  * \brief Set the callback for generating temporary RSA keys.
2019  * \param ctx the SSL context.
2020  * \param cb the callback
2021  */
2022
2023 #ifndef NO_RSA
2024 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2025                                                           int is_export,
2026                                                           int keylength))
2027     {
2028     SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2029     }
2030
2031 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2032                                                   int is_export,
2033                                                   int keylength))
2034     {
2035     SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2036     }
2037 #endif
2038
2039 #ifdef DOXYGEN
2040 /*!
2041  * \brief The RSA temporary key callback function.
2042  * \param ssl the SSL session.
2043  * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2044  * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2045  * of the required key in bits.
2046  * \return the temporary RSA key.
2047  * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2048  */
2049
2050 RSA *cb(SSL *ssl,int is_export,int keylength)
2051     {}
2052 #endif
2053
2054 /*!
2055  * \brief Set the callback for generating temporary DH keys.
2056  * \param ctx the SSL context.
2057  * \param dh the callback
2058  */
2059
2060 #ifndef NO_DH
2061 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2062                                                         int keylength))
2063     {
2064     SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2065     }
2066
2067 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2068                                                 int keylength))
2069     {
2070     SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2071     }
2072 #endif
2073
2074 #if defined(_WINDLL) && defined(WIN16)
2075 #include "../crypto/bio/bss_file.c"
2076 #endif
2077
2078 IMPLEMENT_STACK_OF(SSL_CIPHER)
2079 IMPLEMENT_STACK_OF(SSL_COMP)