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