ssl/ssl_lib.c

   1 /* ssl/ssl_lib.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include "objects.h"
  61 #include "lhash.h"
  62 #include "ssl_locl.h"
  63
  64 char *SSL_version_str="SSLeay 0.9.0b 29-Jun-1998";
  65
  66 static STACK *ssl_meth=NULL;
  67 static STACK *ssl_ctx_meth=NULL;
  68 static int ssl_meth_num=0;
  69 static int ssl_ctx_meth_num=0;
  70
  71 SSL3_ENC_METHOD ssl3_undef_enc_method={
  72         ssl_undefined_function,
  73         ssl_undefined_function,
  74         ssl_undefined_function,
  75         ssl_undefined_function,
  76         ssl_undefined_function,
  77         ssl_undefined_function,
  78         };
  79
  80 void SSL_clear(s)
  81 SSL *s;
  82         {
  83         int state;
  84
  85         if (s->method == NULL) return;
  86
  87         s->error=0;
  88         s->hit=0;
  89
  90         /* This is set if we are doing dynamic renegotiation so keep
  91          * the old cipher.  It is sort of a SSL_clear_lite :-) */
  92         if (s->new_session) return;
  93
  94         state=s->state; /* Keep to check if we throw away the session-id */
  95         s->type=0;
  96
  97         s->version=s->method->version;
  98         s->rwstate=SSL_NOTHING;
  99         s->state=SSL_ST_BEFORE;
 100         s->rstate=SSL_ST_READ_HEADER;
 101         s->read_ahead=s->ctx->default_read_ahead;
 102
 103 /*      s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN); */
 104
 105         if (s->init_buf != NULL)
 106                 {
 107                 BUF_MEM_free(s->init_buf);
 108                 s->init_buf=NULL;
 109                 }
 110
 111         ssl_clear_cipher_ctx(s);
 112
 113         if (ssl_clear_bad_session(s))
 114                 {
 115                 SSL_SESSION_free(s->session);
 116                 s->session=NULL;
 117                 }
 118
 119         s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 120         s->first_packet=0;
 121
 122         s->method->ssl_clear(s);
 123         }
 124
 125 /* Used to change an SSL_CTXs default SSL method type */
 126 int SSL_CTX_set_ssl_version(ctx,meth)
 127 SSL_CTX *ctx;
 128 SSL_METHOD *meth;
 129         {
 130         STACK *sk;
 131
 132         ctx->method=meth;
 133
 134         sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
 135                 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
 136         if ((sk == NULL) || (sk_num(sk) <= 0))
 137                 {
 138                 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
 139                 return(0);
 140                 }
 141         return(1);
 142         }
 143
 144 SSL *SSL_new(ctx)
 145 SSL_CTX *ctx;
 146         {
 147         SSL *s;
 148
 149         if (ctx == NULL)
 150                 {
 151                 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
 152                 return(NULL);
 153                 }
 154         if (ctx->method == NULL)
 155                 {
 156                 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
 157                 return(NULL);
 158                 }
 159
 160         s=(SSL *)Malloc(sizeof(SSL));
 161         if (s == NULL) goto err;
 162         memset(s,0,sizeof(SSL));
 163
 164         if (ctx->default_cert != NULL)
 165                 {
 166                 CRYPTO_add(&ctx->default_cert->references,1,
 167                         CRYPTO_LOCK_SSL_CERT);
 168                 s->cert=ctx->default_cert;
 169                 }
 170         else
 171                 s->cert=NULL;
 172         s->verify_mode=ctx->default_verify_mode;
 173         s->verify_callback=ctx->default_verify_callback;
 174         CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
 175         s->ctx=ctx;
 176
 177         s->verify_result=X509_V_OK;
 178
 179         s->method=ctx->method;
 180
 181         if (!s->method->ssl_new(s))
 182                 {
 183                 SSL_CTX_free(ctx);
 184                 Free(s);
 185                 goto err;
 186                 }
 187
 188         s->quiet_shutdown=ctx->quiet_shutdown;
 189         s->references=1;
 190         s->options=ctx->options;
 191         SSL_clear(s);
 192
 193         CRYPTO_new_ex_data(ssl_meth,(char *)s,&s->ex_data);
 194
 195         return(s);
 196 err:
 197         SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
 198         return(NULL);
 199         }
 200
 201 void SSL_free(s)
 202 SSL *s;
 203         {
 204         int i;
 205
 206         i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
 207 #ifdef REF_PRINT
 208         REF_PRINT("SSL",s);
 209 #endif
 210         if (i > 0) return;
 211 #ifdef REF_CHECK
 212         if (i < 0)
 213                 {
 214                 fprintf(stderr,"SSL_free, bad reference count\n");
 215                 abort(); /* ok */
 216                 }
 217 #endif
 218
 219         CRYPTO_free_ex_data(ssl_meth,(char *)s,&s->ex_data);
 220
 221         if (s->bbio != NULL)
 222                 {
 223                 /* If the buffering BIO is in place, pop it off */
 224                 if (s->bbio == s->wbio)
 225                         {
 226                         s->wbio=BIO_pop(s->wbio);
 227                         }
 228                 BIO_free(s->bbio);
 229                 s->bbio=NULL;
 230                 }
 231         if (s->rbio != NULL)
 232                 BIO_free_all(s->rbio);
 233         if ((s->wbio != NULL) && (s->wbio != s->rbio))
 234                 BIO_free_all(s->wbio);
 235
 236         if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
 237
 238         /* add extra stuff */
 239         if (s->cipher_list != NULL) sk_free(s->cipher_list);
 240         if (s->cipher_list_by_id != NULL) sk_free(s->cipher_list_by_id);
 241
 242         /* Make the next call work :-) */
 243         if (s->session != NULL)
 244                 {
 245                 ssl_clear_bad_session(s);
 246                 SSL_SESSION_free(s->session);
 247                 }
 248
 249         ssl_clear_cipher_ctx(s);
 250
 251         if (s->cert != NULL) ssl_cert_free(s->cert);
 252         /* Free up if allocated */
 253
 254         if (s->ctx) SSL_CTX_free(s->ctx);
 255
 256         if (s->client_CA != NULL)
 257                 sk_pop_free(s->client_CA,X509_NAME_free);
 258
 259         if (s->method != NULL) s->method->ssl_free(s);
 260
 261         Free((char *)s);
 262         }
 263
 264 void SSL_set_bio(s, rbio,wbio)
 265 SSL *s;
 266 BIO *rbio;
 267 BIO *wbio;
 268         {
 269         /* If the output buffering BIO is still in place, remove it
 270          */
 271         if (s->bbio != NULL)
 272                 {
 273                 if (s->wbio == s->bbio)
 274                         {
 275                         s->wbio=s->wbio->next_bio;
 276                         s->bbio->next_bio=NULL;
 277                         }
 278                 }
 279         if ((s->rbio != NULL) && (s->rbio != rbio))
 280                 BIO_free_all(s->rbio);
 281         if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
 282                 BIO_free_all(s->wbio);
 283         s->rbio=rbio;
 284         s->wbio=wbio;
 285         }
 286
 287 BIO *SSL_get_rbio(s)
 288 SSL *s;
 289         { return(s->rbio); }
 290
 291 BIO *SSL_get_wbio(s)
 292 SSL *s;
 293         { return(s->wbio); }
 294
 295 int SSL_get_fd(s)
 296 SSL *s;
 297         {
 298         int ret= -1;
 299         BIO *b,*r;
 300
 301         b=SSL_get_rbio(s);
 302         r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
 303         if (r != NULL)
 304                 BIO_get_fd(r,&ret);
 305         return(ret);
 306         }
 307
 308 #ifndef NO_SOCK
 309 int SSL_set_fd(s, fd)
 310 SSL *s;
 311 int fd;
 312         {
 313         int ret=0;
 314         BIO *bio=NULL;
 315
 316         bio=BIO_new(BIO_s_socket());
 317
 318         if (bio == NULL)
 319                 {
 320                 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
 321                 goto err;
 322                 }
 323         BIO_set_fd(bio,fd,BIO_NOCLOSE);
 324         SSL_set_bio(s,bio,bio);
 325         ret=1;
 326 err:
 327         return(ret);
 328         }
 329
 330 int SSL_set_wfd(s, fd)
 331 SSL *s;
 332 int fd;
 333         {
 334         int ret=0;
 335         BIO *bio=NULL;
 336
 337         if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
 338                 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
 339                 {
 340                 bio=BIO_new(BIO_s_socket());
 341
 342                 if (bio == NULL)
 343                         { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
 344                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 345                 SSL_set_bio(s,SSL_get_rbio(s),bio);
 346                 }
 347         else
 348                 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
 349         ret=1;
 350 err:
 351         return(ret);
 352         }
 353
 354 int SSL_set_rfd(s, fd)
 355 SSL *s;
 356 int fd;
 357         {
 358         int ret=0;
 359         BIO *bio=NULL;
 360
 361         if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
 362                 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
 363                 {
 364                 bio=BIO_new(BIO_s_socket());
 365
 366                 if (bio == NULL)
 367                         {
 368                         SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
 369                         goto err;
 370                         }
 371                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
 372                 SSL_set_bio(s,bio,SSL_get_wbio(s));
 373                 }
 374         else
 375                 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
 376         ret=1;
 377 err:
 378         return(ret);
 379         }
 380 #endif
 381
 382 int SSL_get_verify_mode(s)
 383 SSL *s;
 384         {
 385         return(s->verify_mode);
 386         }
 387
 388 int (*SSL_get_verify_callback(s))()
 389 SSL *s;
 390         {
 391         return(s->verify_callback);
 392         }
 393
 394 int SSL_CTX_get_verify_mode(ctx)
 395 SSL_CTX *ctx;
 396         {
 397         return(ctx->default_verify_mode);
 398         }
 399
 400 int (*SSL_CTX_get_verify_callback(ctx))()
 401 SSL_CTX *ctx;
 402         {
 403         return(ctx->default_verify_callback);
 404         }
 405
 406 void SSL_set_verify(s, mode, callback)
 407 SSL *s;
 408 int mode;
 409 int (*callback)();
 410         {
 411         s->verify_mode=mode;
 412         if (callback != NULL)
 413                 s->verify_callback=callback;
 414         }
 415
 416 void SSL_set_read_ahead(s, yes)
 417 SSL *s;
 418 int yes;
 419         {
 420         s->read_ahead=yes;
 421         }
 422
 423 int SSL_get_read_ahead(s)
 424 SSL *s;
 425         {
 426         return(s->read_ahead);
 427         }
 428
 429 int SSL_pending(s)
 430 SSL *s;
 431         {
 432         return(s->method->ssl_pending(s));
 433         }
 434
 435 X509 *SSL_get_peer_certificate(s)
 436 SSL *s;
 437         {
 438         X509 *r;
 439
 440         if ((s == NULL) || (s->session == NULL))
 441                 r=NULL;
 442         else
 443                 r=s->session->peer;
 444
 445         if (r == NULL) return(r);
 446
 447         CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
 448
 449         return(r);
 450         }
 451
 452 STACK *SSL_get_peer_cert_chain(s)
 453 SSL *s;
 454         {
 455         STACK *r;
 456
 457         if ((s == NULL) || (s->session == NULL) || (s->session->cert == NULL))
 458                 r=NULL;
 459         else
 460                 r=s->session->cert->cert_chain;
 461
 462         return(r);
 463         }
 464
 465 /* Now in theory, since the calling process own 't' it should be safe to
 466  * modify.  We need to be able to read f without being hassled */
 467 void SSL_copy_session_id(t,f)
 468 SSL *t,*f;
 469         {
 470         CERT *tmp;
 471
 472         /* Do we need to to SSL locking? */
 473         SSL_set_session(t,SSL_get_session(f));
 474
 475         /* what if we are setup as SSLv2 but want to talk SSLv3 or
 476          * vice-versa */
 477         if (t->method != f->method)
 478                 {
 479                 t->method->ssl_free(t); /* cleanup current */
 480                 t->method=f->method;    /* change method */
 481                 t->method->ssl_new(t);  /* setup new */
 482                 }
 483
 484         tmp=t->cert;
 485         if (f->cert != NULL)
 486                 {
 487                 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
 488                 t->cert=f->cert;
 489                 }
 490         else
 491                 t->cert=NULL;
 492         if (tmp != NULL) ssl_cert_free(tmp);
 493         }
 494
 495 /* Fix this so it checks all the valid key/cert options */
 496 int SSL_CTX_check_private_key(ctx)
 497 SSL_CTX *ctx;
 498         {
 499         if (    (ctx == NULL) ||
 500                 (ctx->default_cert == NULL) ||
 501                 (ctx->default_cert->key->x509 == NULL))
 502                 {
 503                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 504                 return(0);
 505                 }
 506         if      (ctx->default_cert->key->privatekey == NULL)
 507                 {
 508                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 509                 return(0);
 510                 }
 511         return(X509_check_private_key(ctx->default_cert->key->x509, ctx->default_cert->key->privatekey));
 512         }
 513
 514 /* Fix this function so that it takes an optional type parameter */
 515 int SSL_check_private_key(ssl)
 516 SSL *ssl;
 517         {
 518         if (ssl == NULL)
 519                 {
 520                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
 521                 return(0);
 522                 }
 523         if (ssl->cert == NULL)
 524                 return(SSL_CTX_check_private_key(ssl->ctx));
 525         if (ssl->cert->key->x509 == NULL)
 526                 {
 527                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 528                 return(0);
 529                 }
 530         if (ssl->cert->key->privatekey == NULL)
 531                 {
 532                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 533                 return(0);
 534                 }
 535         return(X509_check_private_key(ssl->cert->key->x509,
 536                 ssl->cert->key->privatekey));
 537         }
 538
 539 int SSL_accept(s)
 540 SSL *s;
 541         {
 542         return(s->method->ssl_accept(s));
 543         }
 544
 545 int SSL_connect(s)
 546 SSL *s;
 547         {
 548         return(s->method->ssl_connect(s));
 549         }
 550
 551 long SSL_get_default_timeout(s)
 552 SSL *s;
 553         {
 554         return(s->method->get_timeout());
 555         }
 556
 557 int SSL_read(s,buf,num)
 558 SSL *s;
 559 char *buf;
 560 int num;
 561         {
 562         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 563                 {
 564                 s->rwstate=SSL_NOTHING;
 565                 return(0);
 566                 }
 567         return(s->method->ssl_read(s,buf,num));
 568         }
 569
 570 int SSL_peek(s,buf,num)
 571 SSL *s;
 572 char *buf;
 573 int num;
 574         {
 575         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 576                 {
 577                 return(0);
 578                 }
 579         return(s->method->ssl_peek(s,buf,num));
 580         }
 581
 582 int SSL_write(s,buf,num)
 583 SSL *s;
 584 char *buf;
 585 int num;
 586         {
 587         if (s->shutdown & SSL_SENT_SHUTDOWN)
 588                 {
 589                 s->rwstate=SSL_NOTHING;
 590                 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
 591                 return(-1);
 592                 }
 593         return(s->method->ssl_write(s,buf,num));
 594         }
 595
 596 int SSL_shutdown(s)
 597 SSL *s;
 598         {
 599         if ((s != NULL) && !SSL_in_init(s))
 600                 return(s->method->ssl_shutdown(s));
 601         else
 602                 return(1);
 603         }
 604
 605 int SSL_renegotiate(s)
 606 SSL *s;
 607         {
 608         s->new_session=1;
 609         return(s->method->ssl_renegotiate(s));
 610         }
 611
 612 long SSL_ctrl(s,cmd,larg,parg)
 613 SSL *s;
 614 int cmd;
 615 long larg;
 616 char *parg;
 617         {
 618         return(s->method->ssl_ctrl(s,cmd,larg,parg));
 619         }
 620
 621 long SSL_CTX_ctrl(ctx,cmd,larg,parg)
 622 SSL_CTX *ctx;
 623 int cmd;
 624 long larg;
 625 char *parg;
 626         {
 627         return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
 628         }
 629
 630 int ssl_cipher_id_cmp(a,b)
 631 SSL_CIPHER *a,*b;
 632         {
 633         long l;
 634
 635         l=a->id-b->id;
 636         if (l == 0L)
 637                 return(0);
 638         else
 639                 return((l > 0)?1:-1);
 640         }
 641
 642 int ssl_cipher_ptr_id_cmp(ap,bp)
 643 SSL_CIPHER **ap,**bp;
 644         {
 645         long l;
 646
 647         l=(*ap)->id-(*bp)->id;
 648         if (l == 0L)
 649                 return(0);
 650         else
 651                 return((l > 0)?1:-1);
 652         }
 653
 654 /* return a STACK of the ciphers available for the SSL and in order of
 655  * preference */
 656 STACK *SSL_get_ciphers(s)
 657 SSL *s;
 658         {
 659         if ((s != NULL) && (s->cipher_list != NULL))
 660                 {
 661                 return(s->cipher_list);
 662                 }
 663         else if ((s->ctx != NULL) &&
 664                 (s->ctx->cipher_list != NULL))
 665                 {
 666                 return(s->ctx->cipher_list);
 667                 }
 668         return(NULL);
 669         }
 670
 671 /* return a STACK of the ciphers available for the SSL and in order of
 672  * algorithm id */
 673 STACK *ssl_get_ciphers_by_id(s)
 674 SSL *s;
 675         {
 676         if ((s != NULL) && (s->cipher_list_by_id != NULL))
 677                 {
 678                 return(s->cipher_list_by_id);
 679                 }
 680         else if ((s != NULL) && (s->ctx != NULL) &&
 681                 (s->ctx->cipher_list_by_id != NULL))
 682                 {
 683                 return(s->ctx->cipher_list_by_id);
 684                 }
 685         return(NULL);
 686         }
 687
 688 /* The old interface to get the same thing as SSL_get_ciphers() */
 689 char *SSL_get_cipher_list(s,n)
 690 SSL *s;
 691 int n;
 692         {
 693         SSL_CIPHER *c;
 694         STACK *sk;
 695
 696         if (s == NULL) return(NULL);
 697         sk=SSL_get_ciphers(s);
 698         if ((sk == NULL) || (sk_num(sk) <= n))
 699                 return(NULL);
 700         c=(SSL_CIPHER *)sk_value(sk,n);
 701         if (c == NULL) return(NULL);
 702         return(c->name);
 703         }
 704
 705 /* specify the ciphers to be used by defaut by the SSL_CTX */
 706 int SSL_CTX_set_cipher_list(ctx,str)
 707 SSL_CTX *ctx;
 708 char *str;
 709         {
 710         STACK *sk;
 711
 712         sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
 713                 &ctx->cipher_list_by_id,str);
 714 /* XXXX */
 715         return((sk == NULL)?0:1);
 716         }
 717
 718 /* specify the ciphers to be used by the SSL */
 719 int SSL_set_cipher_list(s, str)
 720 SSL *s;
 721 char *str;
 722         {
 723         STACK *sk;
 724
 725         sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
 726                 &s->cipher_list_by_id,str);
 727 /* XXXX */
 728         return((sk == NULL)?0:1);
 729         }
 730
 731 /* works well for SSLv2, not so good for SSLv3 */
 732 char *SSL_get_shared_ciphers(s,buf,len)
 733 SSL *s;
 734 char *buf;
 735 int len;
 736         {
 737         char *p,*cp;
 738         STACK *sk;
 739         SSL_CIPHER *c;
 740         int i;
 741
 742         if ((s->session == NULL) || (s->session->ciphers == NULL) ||
 743                 (len < 2))
 744                 return(NULL);
 745
 746         p=buf;
 747         sk=s->session->ciphers;
 748         for (i=0; i<sk_num(sk); i++)
 749                 {
 750                 /* Decrement for either the ':' or a '\0' */
 751                 len--;
 752                 c=(SSL_CIPHER *)sk_value(sk,i);
 753                 for (cp=c->name; *cp; )
 754                         {
 755                         if (len-- == 0)
 756                                 {
 757                                 *p='\0';
 758                                 return(buf);
 759                                 }
 760                         else
 761                                 *(p++)= *(cp++);
 762                         }
 763                 *(p++)=':';
 764                 }
 765         p[-1]='\0';
 766         return(buf);
 767         }
 768
 769 int ssl_cipher_list_to_bytes(s,sk,p)
 770 SSL *s;
 771 STACK *sk;
 772 unsigned char *p;
 773         {
 774         int i,j=0;
 775         SSL_CIPHER *c;
 776         unsigned char *q;
 777
 778         if (sk == NULL) return(0);
 779         q=p;
 780
 781         for (i=0; i<sk_num(sk); i++)
 782                 {
 783                 c=(SSL_CIPHER *)sk_value(sk,i);
 784                 j=ssl_put_cipher_by_char(s,c,p);
 785                 p+=j;
 786                 }
 787         return(p-q);
 788         }
 789
 790 STACK *ssl_bytes_to_cipher_list(s,p,num,skp)
 791 SSL *s;
 792 unsigned char *p;
 793 int num;
 794 STACK **skp;
 795         {
 796         SSL_CIPHER *c;
 797         STACK *sk;
 798         int i,n;
 799
 800         n=ssl_put_cipher_by_char(s,NULL,NULL);
 801         if ((num%n) != 0)
 802                 {
 803                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
 804                 return(NULL);
 805                 }
 806         if ((skp == NULL) || (*skp == NULL))
 807                 sk=sk_new(NULL); /* change perhaps later */
 808         else
 809                 {
 810                 sk= *skp;
 811                 sk_zero(sk);
 812                 }
 813
 814         for (i=0; i<num; i+=n)
 815                 {
 816                 c=ssl_get_cipher_by_char(s,p);
 817                 p+=n;
 818                 if (c != NULL)
 819                         {
 820                         if (!sk_push(sk,(char *)c))
 821                                 {
 822                                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
 823                                 goto err;
 824                                 }
 825                         }
 826                 }
 827
 828         if (skp != NULL)
 829                 *skp=sk;
 830         return(sk);
 831 err:
 832         if ((skp == NULL) || (*skp == NULL))
 833                 sk_free(sk);
 834         return(NULL);
 835         }
 836
 837 unsigned long SSL_SESSION_hash(a)
 838 SSL_SESSION *a;
 839         {
 840         unsigned long l;
 841
 842         l=      (a->session_id[0]     )|(a->session_id[1]<< 8L)|
 843                 (a->session_id[2]<<16L)|(a->session_id[3]<<24L);
 844         return(l);
 845         }
 846
 847 int SSL_SESSION_cmp(a, b)
 848 SSL_SESSION *a;
 849 SSL_SESSION *b;
 850         {
 851         if (a->ssl_version != b->ssl_version)
 852                 return(1);
 853         if (a->session_id_length != b->session_id_length)
 854                 return(1);
 855         return(memcmp(a->session_id,b->session_id,a->session_id_length));
 856         }
 857
 858 SSL_CTX *SSL_CTX_new(meth)
 859 SSL_METHOD *meth;
 860         {
 861         SSL_CTX *ret;
 862
 863         if (meth == NULL)
 864                 {
 865                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
 866                 return(NULL);
 867                 }
 868         ret=(SSL_CTX *)Malloc(sizeof(SSL_CTX));
 869         if (ret == NULL)
 870                 goto err;
 871
 872         memset(ret,0,sizeof(SSL_CTX));
 873
 874         ret->method=meth;
 875
 876         ret->cert_store=NULL;
 877         ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
 878         ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
 879         ret->session_cache_head=NULL;
 880         ret->session_cache_tail=NULL;
 881
 882         /* We take the system default */
 883         ret->session_timeout=meth->get_timeout();
 884
 885         ret->new_session_cb=NULL;
 886         ret->remove_session_cb=NULL;
 887         ret->get_session_cb=NULL;
 888
 889         ret->sess_connect=0;
 890         ret->sess_connect_good=0;
 891         ret->sess_accept=0;
 892         ret->sess_accept_renegotiate=0;
 893         ret->sess_connect_renegotiate=0;
 894         ret->sess_accept_good=0;
 895         ret->sess_miss=0;
 896         ret->sess_timeout=0;
 897         ret->sess_cache_full=0;
 898         ret->sess_hit=0;
 899         ret->sess_cb_hit=0;
 900
 901         ret->references=1;
 902         ret->quiet_shutdown=0;
 903
 904 /*      ret->cipher=NULL;*/
 905 /*      ret->s2->challenge=NULL;
 906         ret->master_key=NULL;
 907         ret->key_arg=NULL;
 908         ret->s2->conn_id=NULL; */
 909
 910         ret->info_callback=NULL;
 911
 912         ret->app_verify_callback=NULL;
 913         ret->app_verify_arg=NULL;
 914
 915         ret->default_read_ahead=0;
 916         ret->default_verify_mode=SSL_VERIFY_NONE;
 917         ret->default_verify_callback=NULL;
 918         if ((ret->default_cert=ssl_cert_new()) == NULL)
 919                 goto err;
 920
 921         ret->default_passwd_callback=NULL;
 922         ret->client_cert_cb=NULL;
 923
 924         ret->sessions=lh_new(SSL_SESSION_hash,SSL_SESSION_cmp);
 925         if (ret->sessions == NULL) goto err;
 926         ret->cert_store=X509_STORE_new();
 927         if (ret->cert_store == NULL) goto err;
 928
 929         ssl_create_cipher_list(ret->method,
 930                 &ret->cipher_list,&ret->cipher_list_by_id,
 931                 SSL_DEFAULT_CIPHER_LIST);
 932         if ((ret->cipher_list == NULL) || (sk_num(ret->cipher_list) <= 0))
 933                 {
 934                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
 935                 goto err2;
 936                 }
 937
 938         if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
 939                 {
 940                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
 941                 goto err2;
 942                 }
 943         if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
 944                 {
 945                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
 946                 goto err2;
 947                 }
 948         if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
 949                 {
 950                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
 951                 goto err2;
 952                 }
 953
 954         if ((ret->client_CA=sk_new_null()) == NULL)
 955                 goto err;
 956
 957         CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data);
 958
 959         return(ret);
 960 err:
 961         SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
 962 err2:
 963         if (ret != NULL) SSL_CTX_free(ret);
 964         return(NULL);
 965         }
 966
 967 void SSL_CTX_free(a)
 968 SSL_CTX *a;
 969         {
 970         int i;
 971
 972         if (a == NULL) return;
 973
 974         i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
 975 #ifdef REF_PRINT
 976         REF_PRINT("SSL_CTX",a);
 977 #endif
 978         if (i > 0) return;
 979 #ifdef REF_CHECK
 980         if (i < 0)
 981                 {
 982                 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
 983                 abort(); /* ok */
 984                 }
 985 #endif
 986         CRYPTO_free_ex_data(ssl_ctx_meth,(char *)a,&a->ex_data);
 987
 988         if (a->sessions != NULL)
 989                 {
 990                 SSL_CTX_flush_sessions(a,0);
 991                 lh_free(a->sessions);
 992                 }
 993         if (a->cert_store != NULL)
 994                 X509_STORE_free(a->cert_store);
 995         if (a->cipher_list != NULL)
 996                 sk_free(a->cipher_list);
 997         if (a->cipher_list_by_id != NULL)
 998                 sk_free(a->cipher_list_by_id);
 999         if (a->default_cert != NULL)
1000                 ssl_cert_free(a->default_cert);
1001         if (a->client_CA != NULL)
1002                 sk_pop_free(a->client_CA,X509_NAME_free);
1003         Free((char *)a);
1004         }
1005
1006 void SSL_CTX_set_default_passwd_cb(ctx,cb)
1007 SSL_CTX *ctx;
1008 int (*cb)();
1009         {
1010         ctx->default_passwd_callback=cb;
1011         }
1012
1013 void SSL_CTX_set_cert_verify_cb(ctx,cb,arg)
1014 SSL_CTX *ctx;
1015 int (*cb)();
1016 char *arg;
1017         {
1018         ctx->app_verify_callback=cb;
1019         ctx->app_verify_arg=arg;
1020         }
1021
1022 void SSL_CTX_set_verify(ctx,mode,cb)
1023 SSL_CTX *ctx;
1024 int mode;
1025 int (*cb)();
1026         {
1027         ctx->default_verify_mode=mode;
1028         ctx->default_verify_callback=cb;
1029         /* This needs cleaning up EAY EAY EAY */
1030         X509_STORE_set_verify_cb_func(ctx->cert_store,cb);
1031         }
1032
1033 void ssl_set_cert_masks(c)
1034 CERT *c;
1035         {
1036         CERT_PKEY *cpk;
1037         int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1038         int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1039         int rsa_tmp_export,dh_tmp_export;
1040         unsigned long mask,emask;
1041
1042         if ((c == NULL) || (c->valid)) return;
1043
1044 #ifndef NO_RSA
1045         rsa_tmp=((c->rsa_tmp != NULL) || (c->rsa_tmp_cb != NULL))?1:0;
1046         rsa_tmp_export=((c->rsa_tmp_cb != NULL) ||
1047                 (rsa_tmp && (RSA_size(c->rsa_tmp)*8 <= 512)))?1:0;
1048 #else
1049         rsa_tmp=rsa_tmp_export=0;
1050 #endif
1051 #ifndef NO_DH
1052         dh_tmp=((c->dh_tmp != NULL) || (c->dh_tmp_cb != NULL))?1:0;
1053         dh_tmp_export=((c->dh_tmp_cb != NULL) ||
1054                 (dh_tmp && (DH_size(c->dh_tmp)*8 <= 512)))?1:0;
1055 #else
1056         dh_tmp=dh_tmp_export=0;
1057 #endif
1058
1059         cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1060         rsa_enc= ((cpk->x509 != NULL) && (cpk->privatekey != NULL))?1:0;
1061         rsa_enc_export=(rsa_enc && (EVP_PKEY_size(cpk->privatekey)*8 <= 512))?1:0;
1062         cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1063         rsa_sign=((cpk->x509 != NULL) && (cpk->privatekey != NULL))?1:0;
1064         cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1065         dsa_sign=((cpk->x509 != NULL) && (cpk->privatekey != NULL))?1:0;
1066         cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1067         dh_rsa=  ((cpk->x509 != NULL) && (cpk->privatekey != NULL))?1:0;
1068         dh_rsa_export=(dh_rsa && (EVP_PKEY_size(cpk->privatekey)*8 <= 512))?1:0;
1069         cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1070 /* FIX THIS EAY EAY EAY */
1071         dh_dsa=  ((cpk->x509 != NULL) && (cpk->privatekey != NULL))?1:0;
1072         dh_dsa_export=(dh_dsa && (EVP_PKEY_size(cpk->privatekey)*8 <= 512))?1:0;
1073
1074         mask=0;
1075         emask=0;
1076
1077 #ifdef CIPHER_DEBUG
1078         printf("rt=%d dht=%d re=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1079                 rsa_tmp,dh_tmp,
1080                 rsa_enc,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1081 #endif
1082
1083         if (rsa_enc || (rsa_tmp && rsa_sign))
1084                 mask|=SSL_kRSA;
1085         if (rsa_enc_export || (rsa_tmp_export && rsa_sign))
1086                 emask|=SSL_kRSA;
1087
1088 #if 0
1089         /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1090         if (    (dh_tmp || dh_rsa || dh_dsa) &&
1091                 (rsa_enc || rsa_sign || dsa_sign))
1092                 mask|=SSL_kEDH;
1093         if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1094                 (rsa_enc || rsa_sign || dsa_sign))
1095                 emask|=SSL_kEDH;
1096 #endif
1097
1098         if (dh_tmp_export)
1099                 emask|=SSL_kEDH;
1100
1101         if (dh_tmp)
1102                 mask|=SSL_kEDH;
1103
1104         if (dh_rsa) mask|=SSL_kDHr;
1105         if (dh_rsa_export) emask|=SSL_kDHr;
1106
1107         if (dh_dsa) mask|=SSL_kDHd;
1108         if (dh_dsa_export) emask|=SSL_kDHd;
1109
1110         if (rsa_enc || rsa_sign)
1111                 {
1112                 mask|=SSL_aRSA;
1113                 emask|=SSL_aRSA;
1114                 }
1115
1116         if (dsa_sign)
1117                 {
1118                 mask|=SSL_aDSS;
1119                 emask|=SSL_aDSS;
1120                 }
1121
1122 #ifdef SSL_ALLOW_ADH
1123         mask|=SSL_aNULL;
1124         emask|=SSL_aNULL;
1125 #endif
1126
1127         c->mask=mask;
1128         c->export_mask=emask;
1129         c->valid=1;
1130         }
1131
1132 /* THIS NEEDS CLEANING UP */
1133 X509 *ssl_get_server_send_cert(s)
1134 SSL *s;
1135         {
1136         unsigned long alg,mask,kalg;
1137         CERT *c;
1138         int i,export;
1139
1140         c=s->cert;
1141         ssl_set_cert_masks(c);
1142         alg=s->s3->tmp.new_cipher->algorithms;
1143         export=(alg & SSL_EXPORT)?1:0;
1144         mask=(export)?c->export_mask:c->mask;
1145         kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1146
1147         if      (kalg & SSL_kDHr)
1148                 i=SSL_PKEY_DH_RSA;
1149         else if (kalg & SSL_kDHd)
1150                 i=SSL_PKEY_DH_DSA;
1151         else if (kalg & SSL_aDSS)
1152                 i=SSL_PKEY_DSA_SIGN;
1153         else if (kalg & SSL_aRSA)
1154                 {
1155                 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1156                         i=SSL_PKEY_RSA_SIGN;
1157                 else
1158                         i=SSL_PKEY_RSA_ENC;
1159                 }
1160         else /* if (kalg & SSL_aNULL) */
1161                 {
1162                 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,SSL_R_INTERNAL_ERROR);
1163                 return(NULL);
1164                 }
1165         if (c->pkeys[i].x509 == NULL) return(NULL);
1166         return(c->pkeys[i].x509);
1167         }
1168
1169 EVP_PKEY *ssl_get_sign_pkey(s,cipher)
1170 SSL *s;
1171 SSL_CIPHER *cipher;
1172         {
1173         unsigned long alg;
1174         CERT *c;
1175
1176         alg=cipher->algorithms;
1177         c=s->cert;
1178
1179         if ((alg & SSL_aDSS) &&
1180                 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1181                 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1182         else if (alg & SSL_aRSA)
1183                 {
1184                 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1185                         return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1186                 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1187                         return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1188                 else
1189                         return(NULL);
1190                 }
1191         else /* if (alg & SSL_aNULL) */
1192                 {
1193                 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,SSL_R_INTERNAL_ERROR);
1194                 return(NULL);
1195                 }
1196         }
1197
1198 void ssl_update_cache(s,mode)
1199 SSL *s;
1200 int mode;
1201         {
1202         int i;
1203
1204         /* If the session_id_length is 0, we are not supposed to cache it,
1205          * and it would be rather hard to do anyway :-) */
1206         if (s->session->session_id_length == 0) return;
1207
1208         if ((s->ctx->session_cache_mode & mode)
1209                 && (!s->hit)
1210                 && SSL_CTX_add_session(s->ctx,s->session)
1211                 && (s->ctx->new_session_cb != NULL))
1212                 {
1213                 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1214                 if (!s->ctx->new_session_cb(s,s->session))
1215                         SSL_SESSION_free(s->session);
1216                 }
1217
1218         /* auto flush every 255 connections */
1219         i=s->ctx->session_cache_mode;
1220         if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1221                 ((i & mode) == mode))
1222                 {
1223                 if (  (((mode & SSL_SESS_CACHE_CLIENT)
1224                         ?s->ctx->sess_connect_good
1225                         :s->ctx->sess_accept_good) & 0xff) == 0xff)
1226                         {
1227                         SSL_CTX_flush_sessions(s->ctx,time(NULL));
1228                         }
1229                 }
1230         }
1231
1232 SSL_METHOD *SSL_get_ssl_method(s)
1233 SSL *s;
1234         {
1235         return(s->method);
1236         }
1237
1238 int SSL_set_ssl_method(s,meth)
1239 SSL *s;
1240 SSL_METHOD *meth;
1241         {
1242         int conn= -1;
1243         int ret=1;
1244
1245         if (s->method != meth)
1246                 {
1247                 if (s->handshake_func != NULL)
1248                         conn=(s->handshake_func == s->method->ssl_connect);
1249
1250                 if (s->method->version == meth->version)
1251                         s->method=meth;
1252                 else
1253                         {
1254                         s->method->ssl_free(s);
1255                         s->method=meth;
1256                         ret=s->method->ssl_new(s);
1257                         }
1258
1259                 if (conn == 1)
1260                         s->handshake_func=meth->ssl_connect;
1261                 else if (conn == 0)
1262                         s->handshake_func=meth->ssl_accept;
1263                 }
1264         return(ret);
1265         }
1266
1267 int SSL_get_error(s,i)
1268 SSL *s;
1269 int i;
1270         {
1271         int reason;
1272         BIO *bio;
1273
1274         if (i > 0) return(SSL_ERROR_NONE);
1275
1276         if (ERR_peek_error() != 0)
1277                 return(SSL_ERROR_SSL);
1278
1279         if ((i < 0) && SSL_want_read(s))
1280                 {
1281                 bio=SSL_get_rbio(s);
1282                 if (BIO_should_read(bio))
1283                         return(SSL_ERROR_WANT_READ);
1284                 else if (BIO_should_write(bio))
1285                         return(SSL_ERROR_WANT_WRITE);
1286                 else if (BIO_should_io_special(bio))
1287                         {
1288                         reason=BIO_get_retry_reason(bio);
1289                         if (reason == BIO_RR_CONNECT)
1290                                 return(SSL_ERROR_WANT_CONNECT);
1291                         else
1292                                 return(SSL_ERROR_SYSCALL); /* unknown */
1293                         }
1294                 }
1295
1296         if ((i < 0) && SSL_want_write(s))
1297                 {
1298                 bio=SSL_get_wbio(s);
1299                 if (BIO_should_write(bio))
1300                         return(SSL_ERROR_WANT_WRITE);
1301                 else if (BIO_should_read(bio))
1302                         return(SSL_ERROR_WANT_READ);
1303                 else if (BIO_should_io_special(bio))
1304                         {
1305                         reason=BIO_get_retry_reason(bio);
1306                         if (reason == BIO_RR_CONNECT)
1307                                 return(SSL_ERROR_WANT_CONNECT);
1308                         else
1309                                 return(SSL_ERROR_SYSCALL);
1310                         }
1311                 }
1312         if ((i < 0) && SSL_want_x509_lookup(s))
1313                 {
1314                 return(SSL_ERROR_WANT_X509_LOOKUP);
1315                 }
1316
1317         if (i == 0)
1318                 {
1319                 if (s->version == SSL2_VERSION)
1320                         {
1321                         /* assume it is the socket being closed */
1322                         return(SSL_ERROR_ZERO_RETURN);
1323                         }
1324                 else
1325                         {
1326                         if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1327                                 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1328                                 return(SSL_ERROR_ZERO_RETURN);
1329                         }
1330                 }
1331         return(SSL_ERROR_SYSCALL);
1332         }
1333
1334 int SSL_do_handshake(s)
1335 SSL *s;
1336         {
1337         int ret=1;
1338
1339         if (s->handshake_func == NULL)
1340                 {
1341                 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1342                 return(-1);
1343                 }
1344         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1345         if (SSL_in_init(s) || SSL_in_before(s))
1346                 {
1347                 ret=s->handshake_func(s);
1348                 }
1349         return(ret);
1350         }
1351
1352 /* For the next 2 functions, SSL_clear() sets shutdown and so
1353  * one of these calls will reset it */
1354 void SSL_set_accept_state(s)
1355 SSL *s;
1356         {
1357         s->shutdown=0;
1358         s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1359         s->handshake_func=s->method->ssl_accept;
1360         /* clear the current cipher */
1361         ssl_clear_cipher_ctx(s);
1362         }
1363
1364 void SSL_set_connect_state(s)
1365 SSL *s;
1366         {
1367         s->shutdown=0;
1368         s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1369         s->handshake_func=s->method->ssl_connect;
1370         /* clear the current cipher */
1371         ssl_clear_cipher_ctx(s);
1372         }
1373
1374 int ssl_undefined_function(s)
1375 SSL *s;
1376         {
1377         SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1378         return(0);
1379         }
1380
1381 SSL_METHOD *ssl_bad_method(ver)
1382 int ver;
1383         {
1384         SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1385         return(NULL);
1386         }
1387
1388 char *SSL_get_version(s)
1389 SSL *s;
1390         {
1391         if (s->version == TLS1_VERSION)
1392                 return("TLSv1");
1393         else if (s->version == SSL3_VERSION)
1394                 return("SSLv3");
1395         else if (s->version == SSL2_VERSION)
1396                 return("SSLv2");
1397         else
1398                 return("unknown");
1399         }
1400
1401 SSL *SSL_dup(s)
1402 SSL *s;
1403         {
1404         STACK *sk;
1405         X509_NAME *xn;
1406         SSL *ret;
1407         int i;
1408
1409         if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) return(NULL);
1410
1411         /* This copies version, session-id, SSL_METHOD and 'cert' */
1412         SSL_copy_session_id(ret,s);
1413
1414         SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1415         SSL_set_verify(ret,SSL_get_verify_mode(s),
1416                 SSL_get_verify_callback(s));
1417
1418         SSL_set_info_callback(ret,SSL_get_info_callback(s));
1419
1420         ret->debug=s->debug;
1421         ret->options=s->options;
1422
1423         /* copy app data, a little dangerous perhaps */
1424         if (!CRYPTO_dup_ex_data(ssl_meth,&ret->ex_data,&s->ex_data))
1425                 goto err;
1426
1427         /* setup rbio, and wbio */
1428         if (s->rbio != NULL)
1429                 {
1430                 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1431                         goto err;
1432                 }
1433         if (s->wbio != NULL)
1434                 {
1435                 if (s->wbio != s->rbio)
1436                         {
1437                         if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1438                                 goto err;
1439                         }
1440                 else
1441                         ret->wbio=ret->rbio;
1442                 }
1443
1444         /* dup the cipher_list and cipher_list_by_id stacks */
1445         if (s->cipher_list != NULL)
1446                 {
1447                 if ((ret->cipher_list=sk_dup(s->cipher_list)) == NULL)
1448                         goto err;
1449                 }
1450         if (s->cipher_list_by_id != NULL)
1451                 if ((ret->cipher_list_by_id=sk_dup(s->cipher_list_by_id))
1452                         == NULL)
1453                         goto err;
1454
1455         /* Dup the client_CA list */
1456         if (s->client_CA != NULL)
1457                 {
1458                 if ((sk=sk_dup(s->client_CA)) == NULL) goto err;
1459                 ret->client_CA=sk;
1460                 for (i=0; i<sk_num(sk); i++)
1461                         {
1462                         xn=(X509_NAME *)sk_value(sk,i);
1463                         if ((sk_value(sk,i)=(char *)X509_NAME_dup(xn)) == NULL)
1464                                 {
1465                                 X509_NAME_free(xn);
1466                                 goto err;
1467                                 }
1468                         }
1469                 }
1470
1471         ret->shutdown=s->shutdown;
1472         ret->state=s->state;
1473         ret->handshake_func=s->handshake_func;
1474
1475         if (0)
1476                 {
1477 err:
1478                 if (ret != NULL) SSL_free(ret);
1479                 ret=NULL;
1480                 }
1481         return(ret);
1482         }
1483
1484 void ssl_clear_cipher_ctx(s)
1485 SSL *s;
1486         {
1487         if (s->enc_read_ctx != NULL)
1488                 {
1489                 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
1490                 Free(s->enc_read_ctx);
1491                 s->enc_read_ctx=NULL;
1492                 }
1493         if (s->enc_write_ctx != NULL)
1494                 {
1495                 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
1496                 Free(s->enc_write_ctx);
1497                 s->enc_write_ctx=NULL;
1498                 }
1499         }
1500
1501 /* Fix this function so that it takes an optional type parameter */
1502 X509 *SSL_get_certificate(s)
1503 SSL *s;
1504         {
1505         if (s->cert != NULL)
1506                 return(s->cert->key->x509);
1507         else
1508                 return(NULL);
1509         }
1510
1511 /* Fix this function so that it takes an optional type parameter */
1512 EVP_PKEY *SSL_get_privatekey(s)
1513 SSL *s;
1514         {
1515         if (s->cert != NULL)
1516                 return(s->cert->key->privatekey);
1517         else
1518                 return(NULL);
1519         }
1520
1521 SSL_CIPHER *SSL_get_current_cipher(s)
1522 SSL *s;
1523         {
1524         if ((s->session != NULL) && (s->session->cipher != NULL))
1525                 return(s->session->cipher);
1526         return(NULL);
1527         }
1528
1529 int ssl_init_wbio_buffer(s,push)
1530 SSL *s;
1531 int push;
1532         {
1533         BIO *bbio;
1534
1535         if (s->bbio == NULL)
1536                 {
1537                 bbio=BIO_new(BIO_f_buffer());
1538                 if (bbio == NULL) return(0);
1539                 s->bbio=bbio;
1540                 }
1541         else
1542                 {
1543                 bbio=s->bbio;
1544                 if (s->bbio == s->wbio)
1545                         s->wbio=BIO_pop(s->wbio);
1546                 }
1547         BIO_reset(bbio);
1548 /*      if (!BIO_set_write_buffer_size(bbio,16*1024)) */
1549         if (!BIO_set_read_buffer_size(bbio,1))
1550                 {
1551                 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
1552                 return(0);
1553                 }
1554         if (push)
1555                 {
1556                 if (s->wbio != bbio)
1557                         s->wbio=BIO_push(bbio,s->wbio);
1558                 }
1559         else
1560                 {
1561                 if (s->wbio == bbio)
1562                         s->wbio=BIO_pop(bbio);
1563                 }
1564         return(1);
1565         }
1566
1567 void SSL_CTX_set_quiet_shutdown(ctx,mode)
1568 SSL_CTX *ctx;
1569 int mode;
1570         {
1571         ctx->quiet_shutdown=mode;
1572         }
1573
1574 int SSL_CTX_get_quiet_shutdown(ctx)
1575 SSL_CTX *ctx;
1576         {
1577         return(ctx->quiet_shutdown);
1578         }
1579
1580 void SSL_set_quiet_shutdown(s,mode)
1581 SSL *s;
1582 int mode;
1583         {
1584         s->quiet_shutdown=mode;
1585         }
1586
1587 int SSL_get_quiet_shutdown(s)
1588 SSL *s;
1589         {
1590         return(s->quiet_shutdown);
1591         }
1592
1593 void SSL_set_shutdown(s,mode)
1594 SSL *s;
1595 int mode;
1596         {
1597         s->shutdown=mode;
1598         }
1599
1600 int SSL_get_shutdown(s)
1601 SSL *s;
1602         {
1603         return(s->shutdown);
1604         }
1605
1606 int SSL_version(s)
1607 SSL *s;
1608         {
1609         return(s->version);
1610         }
1611
1612 SSL_CTX *SSL_get_SSL_CTX(ssl)
1613 SSL *ssl;
1614         {
1615         return(ssl->ctx);
1616         }
1617
1618 int SSL_CTX_set_default_verify_paths(ctx)
1619 SSL_CTX *ctx;
1620         {
1621         return(X509_STORE_set_default_paths(ctx->cert_store));
1622         }
1623
1624 int SSL_CTX_load_verify_locations(ctx,CAfile,CApath)
1625 SSL_CTX *ctx;
1626 char *CAfile;
1627 char *CApath;
1628         {
1629         return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
1630         }
1631
1632 void SSL_set_info_callback(ssl,cb)
1633 SSL *ssl;
1634 void (*cb)();
1635         {
1636         ssl->info_callback=cb;
1637         }
1638
1639 void (*SSL_get_info_callback(ssl))()
1640 SSL *ssl;
1641         {
1642         return(ssl->info_callback);
1643         }
1644
1645 int SSL_state(ssl)
1646 SSL *ssl;
1647         {
1648         return(ssl->state);
1649         }
1650
1651 void SSL_set_verify_result(ssl,arg)
1652 SSL *ssl;
1653 long arg;
1654         {
1655         ssl->verify_result=arg;
1656         }
1657
1658 long SSL_get_verify_result(ssl)
1659 SSL *ssl;
1660         {
1661         return(ssl->verify_result);
1662         }
1663
1664 int SSL_get_ex_new_index(argl,argp,new_func,dup_func,free_func)
1665 long argl;
1666 char *argp;
1667 int (*new_func)();
1668 int (*dup_func)();
1669 void (*free_func)();
1670         {
1671         ssl_meth_num++;
1672         return(CRYPTO_get_ex_new_index(ssl_meth_num-1,
1673                 &ssl_meth,argl,argp,new_func,dup_func,free_func));
1674         }
1675
1676 int SSL_set_ex_data(s,idx,arg)
1677 SSL *s;
1678 int idx;
1679 char *arg;
1680         {
1681         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
1682         }
1683
1684 char *SSL_get_ex_data(s,idx)
1685 SSL *s;
1686 int idx;
1687         {
1688         return(CRYPTO_get_ex_data(&s->ex_data,idx));
1689         }
1690
1691 int SSL_CTX_get_ex_new_index(argl,argp,new_func,dup_func,free_func)
1692 long argl;
1693 char *argp;
1694 int (*new_func)();
1695 int (*dup_func)();
1696 void (*free_func)();
1697         {
1698         ssl_ctx_meth_num++;
1699         return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1,
1700                 &ssl_ctx_meth,argl,argp,new_func,dup_func,free_func));
1701         }
1702
1703 int SSL_CTX_set_ex_data(s,idx,arg)
1704 SSL_CTX *s;
1705 int idx;
1706 char *arg;
1707         {
1708         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
1709         }
1710
1711 char *SSL_CTX_get_ex_data(s,idx)
1712 SSL_CTX *s;
1713 int idx;
1714         {
1715         return(CRYPTO_get_ex_data(&s->ex_data,idx));
1716         }
1717
1718 #if defined(_WINDLL) && defined(WIN16)
1719 #include "../crypto/bio/bss_file.c"
1720 #endif
1721