apps/s_time.c

   1 /* apps/s_time.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 #define NO_SHUTDOWN
  60
  61 /*-----------------------------------------
  62    s_time - SSL client connection timer program
  63    Written and donated by Larry Streepy <streepy@healthcare.com>
  64   -----------------------------------------*/
  65
  66 #include <stdio.h>
  67 #include <stdlib.h>
  68 #include <string.h>
  69
  70 #if defined(NO_RSA) && !defined(NO_SSL2)
  71 #define NO_SSL2
  72 #endif
  73
  74 #ifdef NO_STDIO
  75 #define APPS_WIN16
  76 #endif
  77 #define USE_SOCKETS
  78 #include <openssl/x509.h>
  79 #include <openssl/ssl.h>
  80 #include <openssl/pem.h>
  81 #include "apps.h"
  82 #include "s_apps.h"
  83 #include <openssl/err.h>
  84 #ifdef WIN32_STUFF
  85 #include "winmain.h"
  86 #include "wintext.h"
  87 #endif
  88
  89 #if !defined(MSDOS) && (!defined(VMS) || defined(__DECC))
  90 #define TIMES
  91 #endif
  92
  93 #ifndef _IRIX
  94 #include <time.h>
  95 #endif
  96 #ifdef TIMES
  97 #include <sys/types.h>
  98 #include <sys/times.h>
  99 #endif
 100
 101 /* Depending on the VMS version, the tms structure is perhaps defined.
 102    The __TMS macro will show if it was.  If it wasn't defined, we should
 103    undefine TIMES, since that tells the rest of the program how things
 104    should be handled.                           -- Richard Levitte */
 105 #if defined(VMS) && defined(__DECC) && !defined(__TMS)
 106 #undef TIMES
 107 #endif
 108
 109 #ifndef TIMES
 110 #include <sys/timeb.h>
 111 #endif
 112
 113 #ifdef _AIX
 114 #include <sys/select.h>
 115 #endif
 116
 117 #if defined(sun) || defined(__ultrix)
 118 #define _POSIX_SOURCE
 119 #include <limits.h>
 120 #include <sys/param.h>
 121 #endif
 122
 123 /* The following if from times(3) man page.  It may need to be changed
 124 */
 125 #ifndef HZ
 126 #ifndef CLK_TCK
 127 #define HZ      100.0
 128 #else /* CLK_TCK */
 129 #define HZ ((double)CLK_TCK)
 130 #endif
 131 #endif
 132
 133 #undef PROG
 134 #define PROG s_time_main
 135
 136 #undef ioctl
 137 #define ioctl ioctlsocket
 138
 139 #define SSL_CONNECT_NAME        "localhost:4433"
 140
 141 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 142
 143 #undef BUFSIZZ
 144 #define BUFSIZZ 1024*10
 145
 146 #define min(a,b) (((a) < (b)) ? (a) : (b))
 147 #define max(a,b) (((a) > (b)) ? (a) : (b))
 148
 149 #undef SECONDS
 150 #define SECONDS 30
 151 extern int verify_depth;
 152 extern int verify_error;
 153
 154 static void s_time_usage(void);
 155 static int parseArgs( int argc, char **argv );
 156 static SSL *doConnection( SSL *scon );
 157 static void s_time_init(void);
 158
 159 /***********************************************************************
 160  * Static data declarations
 161  */
 162
 163 /* static char *port=PORT_STR;*/
 164 static char *host=SSL_CONNECT_NAME;
 165 static char *t_cert_file=NULL;
 166 static char *t_key_file=NULL;
 167 static char *CApath=NULL;
 168 static char *CAfile=NULL;
 169 static char *tm_cipher=NULL;
 170 static int tm_verify = SSL_VERIFY_NONE;
 171 static int maxTime = SECONDS;
 172 static SSL_CTX *tm_ctx=NULL;
 173 static SSL_METHOD *s_time_meth=NULL;
 174 static char *s_www_path=NULL;
 175 static long bytes_read=0;
 176 static int st_bugs=0;
 177 static int perform=0;
 178 #ifdef FIONBIO
 179 static int t_nbio=0;
 180 #endif
 181 #ifdef WIN32
 182 static int exitNow = 0;         /* Set when it's time to exit main */
 183 #endif
 184
 185 static void s_time_init(void)
 186         {
 187         host=SSL_CONNECT_NAME;
 188         t_cert_file=NULL;
 189         t_key_file=NULL;
 190         CApath=NULL;
 191         CAfile=NULL;
 192         tm_cipher=NULL;
 193         tm_verify = SSL_VERIFY_NONE;
 194         maxTime = SECONDS;
 195         tm_ctx=NULL;
 196         s_time_meth=NULL;
 197         s_www_path=NULL;
 198         bytes_read=0;
 199         st_bugs=0;
 200         perform=0;
 201
 202 #ifdef FIONBIO
 203         t_nbio=0;
 204 #endif
 205 #ifdef WIN32
 206         exitNow = 0;            /* Set when it's time to exit main */
 207 #endif
 208         }
 209
 210 /***********************************************************************
 211  * usage - display usage message
 212  */
 213 static void s_time_usage(void)
 214 {
 215         static char umsg[] = "\
 216 -time arg     - max number of seconds to collect data, default %d\n\
 217 -verify arg   - turn on peer certificate verification, arg == depth\n\
 218 -cert arg     - certificate file to use, PEM format assumed\n\
 219 -key arg      - RSA file to use, PEM format assumed, key is in cert file\n\
 220                 file if not specified by this option\n\
 221 -CApath arg   - PEM format directory of CA's\n\
 222 -CAfile arg   - PEM format file of CA's\n\
 223 -cipher       - prefered cipher to use, play with 'openssl ciphers'\n\n";
 224
 225         printf( "usage: s_time <args>\n\n" );
 226
 227         printf("-connect host:port - host:port to connect to (default is %s)\n",SSL_CONNECT_NAME);
 228 #ifdef FIONBIO
 229         printf("-nbio         - Run with non-blocking IO\n");
 230         printf("-ssl2         - Just use SSLv2\n");
 231         printf("-ssl3         - Just use SSLv3\n");
 232         printf("-bugs         - Turn on SSL bug compatability\n");
 233         printf("-new          - Just time new connections\n");
 234         printf("-reuse        - Just time connection reuse\n");
 235         printf("-www page     - Retrieve 'page' from the site\n");
 236 #endif
 237         printf( umsg,SECONDS );
 238 }
 239
 240 /***********************************************************************
 241  * parseArgs - Parse command line arguments and initialize data
 242  *
 243  * Returns 0 if ok, -1 on bad args
 244  */
 245 static int parseArgs(int argc, char **argv)
 246 {
 247     int badop = 0;
 248
 249     verify_depth=0;
 250     verify_error=X509_V_OK;
 251
 252     argc--;
 253     argv++;
 254
 255     while (argc >= 1) {
 256         if (strcmp(*argv,"-connect") == 0)
 257                 {
 258                 if (--argc < 1) goto bad;
 259                 host= *(++argv);
 260                 }
 261 #if 0
 262         else if( strcmp(*argv,"-host") == 0)
 263                 {
 264                 if (--argc < 1) goto bad;
 265                 host= *(++argv);
 266                 }
 267         else if( strcmp(*argv,"-port") == 0)
 268                 {
 269                 if (--argc < 1) goto bad;
 270                 port= *(++argv);
 271                 }
 272 #endif
 273         else if (strcmp(*argv,"-reuse") == 0)
 274                 perform=2;
 275         else if (strcmp(*argv,"-new") == 0)
 276                 perform=1;
 277         else if( strcmp(*argv,"-verify") == 0) {
 278
 279             tm_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 280             if (--argc < 1) goto bad;
 281             verify_depth=atoi(*(++argv));
 282             BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 283
 284         } else if( strcmp(*argv,"-cert") == 0) {
 285
 286             if (--argc < 1) goto bad;
 287             t_cert_file= *(++argv);
 288
 289         } else if( strcmp(*argv,"-key") == 0) {
 290
 291             if (--argc < 1) goto bad;
 292             t_key_file= *(++argv);
 293
 294         } else if( strcmp(*argv,"-CApath") == 0) {
 295
 296             if (--argc < 1) goto bad;
 297             CApath= *(++argv);
 298
 299         } else if( strcmp(*argv,"-CAfile") == 0) {
 300
 301             if (--argc < 1) goto bad;
 302             CAfile= *(++argv);
 303
 304         } else if( strcmp(*argv,"-cipher") == 0) {
 305
 306             if (--argc < 1) goto bad;
 307             tm_cipher= *(++argv);
 308         }
 309 #ifdef FIONBIO
 310         else if(strcmp(*argv,"-nbio") == 0) {
 311             t_nbio=1;
 312         }
 313 #endif
 314         else if(strcmp(*argv,"-www") == 0)
 315                 {
 316                 if (--argc < 1) goto bad;
 317                 s_www_path= *(++argv);
 318                 }
 319         else if(strcmp(*argv,"-bugs") == 0)
 320             st_bugs=1;
 321 #ifndef NO_SSL2
 322         else if(strcmp(*argv,"-ssl2") == 0)
 323             s_time_meth=SSLv2_client_method();
 324 #endif
 325 #ifndef NO_SSL3
 326         else if(strcmp(*argv,"-ssl3") == 0)
 327             s_time_meth=SSLv3_client_method();
 328 #endif
 329         else if( strcmp(*argv,"-time") == 0) {
 330
 331             if (--argc < 1) goto bad;
 332             maxTime= atoi(*(++argv));
 333         }
 334         else {
 335             BIO_printf(bio_err,"unknown option %s\n",*argv);
 336             badop=1;
 337             break;
 338         }
 339
 340         argc--;
 341         argv++;
 342     }
 343
 344     if (perform == 0) perform=3;
 345
 346     if(badop) {
 347 bad:
 348                 s_time_usage();
 349                 return -1;
 350     }
 351
 352         return 0;                       /* Valid args */
 353 }
 354
 355 /***********************************************************************
 356  * TIME - time functions
 357  */
 358 #define START   0
 359 #define STOP    1
 360
 361 static double tm_Time_F(int s)
 362         {
 363         static double ret;
 364 #ifdef TIMES
 365         static struct tms tstart,tend;
 366
 367         if(s == START) {
 368                 times(&tstart);
 369                 return(0);
 370         } else {
 371                 times(&tend);
 372                 ret=((double)(tend.tms_utime-tstart.tms_utime))/HZ;
 373                 return((ret == 0.0)?1e-6:ret);
 374         }
 375 #else /* !times() */
 376         static struct timeb tstart,tend;
 377         long i;
 378
 379         if(s == START) {
 380                 ftime(&tstart);
 381                 return(0);
 382         } else {
 383                 ftime(&tend);
 384                 i=(long)tend.millitm-(long)tstart.millitm;
 385                 ret=((double)(tend.time-tstart.time))+((double)i)/1000.0;
 386                 return((ret == 0.0)?1e-6:ret);
 387         }
 388 #endif
 389 }
 390
 391 /***********************************************************************
 392  * MAIN - main processing area for client
 393  *                      real name depends on MONOLITH
 394  */
 395 int MAIN(int argc, char **argv)
 396         {
 397         double totalTime = 0.0;
 398         int nConn = 0;
 399         SSL *scon=NULL;
 400         long finishtime=0;
 401         int ret=1,i;
 402         MS_STATIC char buf[1024*8];
 403         int ver;
 404
 405         apps_startup();
 406         s_time_init();
 407
 408         if (bio_err == NULL)
 409                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 410
 411 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 412         s_time_meth=SSLv23_client_method();
 413 #elif !defined(NO_SSL3)
 414         s_time_meth=SSLv3_client_method();
 415 #elif !defined(NO_SSL2)
 416         s_time_meth=SSLv2_client_method();
 417 #endif
 418
 419         /* parse the command line arguments */
 420         if( parseArgs( argc, argv ) < 0 )
 421                 goto end;
 422
 423         SSLeay_add_ssl_algorithms();
 424         if ((tm_ctx=SSL_CTX_new(s_time_meth)) == NULL) return(1);
 425
 426         SSL_CTX_set_quiet_shutdown(tm_ctx,1);
 427
 428         if (st_bugs) SSL_CTX_set_options(tm_ctx,SSL_OP_ALL);
 429         SSL_CTX_set_cipher_list(tm_ctx,tm_cipher);
 430         if(!set_cert_stuff(tm_ctx,t_cert_file,t_key_file))
 431                 goto end;
 432
 433         SSL_load_error_strings();
 434
 435         if ((!SSL_CTX_load_verify_locations(tm_ctx,CAfile,CApath)) ||
 436                 (!SSL_CTX_set_default_verify_paths(tm_ctx)))
 437                 {
 438                 /* BIO_printf(bio_err,"error seting default verify locations\n"); */
 439                 ERR_print_errors(bio_err);
 440                 /* goto end; */
 441                 }
 442
 443         if (tm_cipher == NULL)
 444                 tm_cipher = getenv("SSL_CIPHER");
 445
 446         if (tm_cipher == NULL ) {
 447                 fprintf( stderr, "No CIPHER specified\n" );
 448 /*              EXIT(1); */
 449         }
 450
 451         if (!(perform & 1)) goto next;
 452         printf( "Collecting connection statistics for %d seconds\n", maxTime );
 453
 454         /* Loop and time how long it takes to make connections */
 455
 456         bytes_read=0;
 457         finishtime=(long)time(NULL)+maxTime;
 458         tm_Time_F(START);
 459         for (;;)
 460                 {
 461                 if (finishtime < time(NULL)) break;
 462 #ifdef WIN32_STUFF
 463
 464                 if( flushWinMsgs(0) == -1 )
 465                         goto end;
 466
 467                 if( waitingToDie || exitNow )           /* we're dead */
 468                         goto end;
 469 #endif
 470
 471                 if( (scon = doConnection( NULL )) == NULL )
 472                         goto end;
 473
 474                 if (s_www_path != NULL)
 475                         {
 476                         sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 477                         SSL_write(scon,buf,strlen(buf));
 478                         while ((i=SSL_read(scon,buf,sizeof(buf))) > 0)
 479                                 bytes_read+=i;
 480                         }
 481
 482 #ifdef NO_SHUTDOWN
 483                 SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 484 #else
 485                 SSL_shutdown(scon);
 486 #endif
 487                 SHUTDOWN2(SSL_get_fd(scon));
 488
 489                 nConn += 1;
 490                 if (SSL_session_reused(scon))
 491                         ver='r';
 492                 else
 493                         {
 494                         ver=SSL_version(scon);
 495                         if (ver == TLS1_VERSION)
 496                                 ver='t';
 497                         else if (ver == SSL3_VERSION)
 498                                 ver='3';
 499                         else if (ver == SSL2_VERSION)
 500                                 ver='2';
 501                         else
 502                                 ver='*';
 503                         }
 504                 fputc(ver,stdout);
 505                 fflush(stdout);
 506
 507                 SSL_free( scon );
 508                 scon=NULL;
 509                 }
 510         totalTime += tm_Time_F(STOP); /* Add the time for this iteration */
 511
 512         i=(int)(time(NULL)-finishtime+maxTime);
 513         printf( "\n\n%d connections in %.2fs; %.2f connections/user sec, bytes read %ld\n", nConn, totalTime, ((double)nConn/totalTime),bytes_read);
 514         printf( "%d connections in %ld real seconds, %ld bytes read per connection\n",nConn,time(NULL)-finishtime+maxTime,bytes_read/nConn);
 515
 516         /* Now loop and time connections using the same session id over and over */
 517
 518 next:
 519         if (!(perform & 2)) goto end;
 520         printf( "\n\nNow timing with session id reuse.\n" );
 521
 522         /* Get an SSL object so we can reuse the session id */
 523         if( (scon = doConnection( NULL )) == NULL )
 524                 {
 525                 fprintf( stderr, "Unable to get connection\n" );
 526                 goto end;
 527                 }
 528
 529         if (s_www_path != NULL)
 530                 {
 531                 sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 532                 SSL_write(scon,buf,strlen(buf));
 533                 while (SSL_read(scon,buf,sizeof(buf)) > 0)
 534                         ;
 535                 }
 536 #ifdef NO_SHUTDOWN
 537         SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 538 #else
 539         SSL_shutdown(scon);
 540 #endif
 541         SHUTDOWN2(SSL_get_fd(scon));
 542
 543         nConn = 0;
 544         totalTime = 0.0;
 545
 546         finishtime=time(NULL)+maxTime;
 547
 548         printf( "starting\n" );
 549         bytes_read=0;
 550         tm_Time_F(START);
 551
 552         for (;;)
 553                 {
 554                 if (finishtime < time(NULL)) break;
 555
 556 #ifdef WIN32_STUFF
 557                 if( flushWinMsgs(0) == -1 )
 558                         goto end;
 559
 560                 if( waitingToDie || exitNow )   /* we're dead */
 561                         goto end;
 562 #endif
 563
 564                 if( (doConnection( scon )) == NULL )
 565                         goto end;
 566
 567                 if (s_www_path)
 568                         {
 569                         sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 570                         SSL_write(scon,buf,strlen(buf));
 571                         while ((i=SSL_read(scon,buf,sizeof(buf))) > 0)
 572                                 bytes_read+=i;
 573                         }
 574
 575 #ifdef NO_SHUTDOWN
 576                 SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 577 #else
 578                 SSL_shutdown(scon);
 579 #endif
 580                 SHUTDOWN2(SSL_get_fd(scon));
 581
 582                 nConn += 1;
 583                 if (SSL_session_reused(scon))
 584                         ver='r';
 585                 else
 586                         {
 587                         ver=SSL_version(scon);
 588                         if (ver == TLS1_VERSION)
 589                                 ver='t';
 590                         else if (ver == SSL3_VERSION)
 591                                 ver='3';
 592                         else if (ver == SSL2_VERSION)
 593                                 ver='2';
 594                         else
 595                                 ver='*';
 596                         }
 597                 fputc(ver,stdout);
 598                 fflush(stdout);
 599                 }
 600         totalTime += tm_Time_F(STOP); /* Add the time for this iteration*/
 601
 602
 603         printf( "\n\n%d connections in %.2fs; %.2f connections/user sec, bytes read %ld\n", nConn, totalTime, ((double)nConn/totalTime),bytes_read);
 604         printf( "%d connections in %ld real seconds, %ld bytes read per connection\n",nConn,time(NULL)-finishtime+maxTime,bytes_read/nConn);
 605
 606         ret=0;
 607 end:
 608         if (scon != NULL) SSL_free(scon);
 609
 610         if (tm_ctx != NULL)
 611                 {
 612                 SSL_CTX_free(tm_ctx);
 613                 tm_ctx=NULL;
 614                 }
 615         EXIT(ret);
 616         }
 617
 618 /***********************************************************************
 619  * doConnection - make a connection
 620  * Args:
 621  *              scon    = earlier ssl connection for session id, or NULL
 622  * Returns:
 623  *              SSL *   = the connection pointer.
 624  */
 625 static SSL *doConnection(SSL *scon)
 626         {
 627         BIO *conn;
 628         SSL *serverCon;
 629         int width, i;
 630         fd_set readfds;
 631
 632         if ((conn=BIO_new(BIO_s_connect())) == NULL)
 633                 return(NULL);
 634
 635 /*      BIO_set_conn_port(conn,port);*/
 636         BIO_set_conn_hostname(conn,host);
 637
 638         if (scon == NULL)
 639                 serverCon=(SSL *)SSL_new(tm_ctx);
 640         else
 641                 {
 642                 serverCon=scon;
 643                 SSL_set_connect_state(serverCon);
 644                 }
 645
 646         SSL_set_bio(serverCon,conn,conn);
 647
 648 #if 0
 649         if( scon != NULL )
 650                 SSL_set_session(serverCon,SSL_get_session(scon));
 651 #endif
 652
 653         /* ok, lets connect */
 654         for(;;) {
 655                 i=SSL_connect(serverCon);
 656                 if (BIO_sock_should_retry(i))
 657                         {
 658                         BIO_printf(bio_err,"DELAY\n");
 659
 660                         i=SSL_get_fd(serverCon);
 661                         width=i+1;
 662                         FD_ZERO(&readfds);
 663                         FD_SET(i,&readfds);
 664                         /* Note: under VMS with SOCKETSHR the 2nd parameter
 665                          * is currently of type (int *) whereas under other
 666                          * systems it is (void *) if you don't have a cast it
 667                          * will choke the compiler: if you do have a cast then
 668                          * you can either go for (int *) or (void *).
 669                          */
 670                         select(width,(void *)&readfds,NULL,NULL,NULL);
 671                         continue;
 672                         }
 673                 break;
 674                 }
 675         if(i <= 0)
 676                 {
 677                 BIO_printf(bio_err,"ERROR\n");
 678                 if (verify_error != X509_V_OK)
 679                         BIO_printf(bio_err,"verify error:%s\n",
 680                                 X509_verify_cert_error_string(verify_error));
 681                 else
 682                         ERR_print_errors(bio_err);
 683                 if (scon == NULL)
 684                         SSL_free(serverCon);
 685                 return NULL;
 686                 }
 687
 688         return serverCon;
 689         }
 690
 691