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 #include <openssl/x509.h>
  78 #include <openssl/ssl.h>
  79 #include <openssl/pem.h>
  80 #define USE_SOCKETS
  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 #ifndef MSDOS
  90 #define TIMES
  91 #endif
  92
  93 #ifndef VMS
  94 #ifndef _IRIX
  95 #include <time.h>
  96 #endif
  97 #ifdef TIMES
  98 #include <sys/types.h>
  99 #include <sys/times.h>
 100 #endif
 101 #else /* VMS */
 102 #include <types.h>
 103 struct tms {
 104         time_t tms_utime;
 105         time_t tms_stime;
 106         time_t tms_uchild;      /* I dunno...  */
 107         time_t tms_uchildsys;   /* so these names are a guess :-) */
 108         }
 109 #endif
 110 #ifndef TIMES
 111 #include <sys/timeb.h>
 112 #endif
 113
 114 #ifdef _AIX
 115 #include <sys/select.h>
 116 #endif
 117
 118 #if defined(sun) || defined(__ultrix)
 119 #define _POSIX_SOURCE
 120 #include <limits.h>
 121 #include <sys/param.h>
 122 #endif
 123
 124 /* The following if from times(3) man page.  It may need to be changed
 125 */
 126 #ifndef HZ
 127 #ifndef CLK_TCK
 128 #ifndef VMS
 129 #define HZ      100.0
 130 #else /* VMS */
 131 #define HZ      100.0
 132 #endif
 133 #else /* CLK_TCK */
 134 #define HZ ((double)CLK_TCK)
 135 #endif
 136 #endif
 137
 138 #undef PROG
 139 #define PROG s_time_main
 140
 141 #define ioctl ioctlsocket
 142
 143 #define SSL_CONNECT_NAME        "localhost:4433"
 144
 145 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 146
 147 #undef BUFSIZZ
 148 #define BUFSIZZ 1024*10
 149
 150 #define min(a,b) (((a) < (b)) ? (a) : (b))
 151 #define max(a,b) (((a) > (b)) ? (a) : (b))
 152
 153 #undef SECONDS
 154 #define SECONDS 30
 155 extern int verify_depth;
 156 extern int verify_error;
 157
 158 static void s_time_usage(void);
 159 static int parseArgs( int argc, char **argv );
 160 static SSL *doConnection( SSL *scon );
 161 static void s_time_init(void);
 162
 163 /***********************************************************************
 164  * Static data declarations
 165  */
 166
 167 /* static char *port=PORT_STR;*/
 168 static char *host=SSL_CONNECT_NAME;
 169 static char *t_cert_file=NULL;
 170 static char *t_key_file=NULL;
 171 static char *CApath=NULL;
 172 static char *CAfile=NULL;
 173 static char *tm_cipher=NULL;
 174 static int tm_verify = SSL_VERIFY_NONE;
 175 static int maxTime = SECONDS;
 176 static SSL_CTX *tm_ctx=NULL;
 177 static SSL_METHOD *s_time_meth=NULL;
 178 static char *s_www_path=NULL;
 179 static long bytes_read=0;
 180 static int st_bugs=0;
 181 static int perform=0;
 182 #ifdef FIONBIO
 183 static int t_nbio=0;
 184 #endif
 185 #ifdef WIN32
 186 static int exitNow = 0;         /* Set when it's time to exit main */
 187 #endif
 188
 189 static void s_time_init(void)
 190         {
 191         host=SSL_CONNECT_NAME;
 192         t_cert_file=NULL;
 193         t_key_file=NULL;
 194         CApath=NULL;
 195         CAfile=NULL;
 196         tm_cipher=NULL;
 197         tm_verify = SSL_VERIFY_NONE;
 198         maxTime = SECONDS;
 199         tm_ctx=NULL;
 200         s_time_meth=NULL;
 201         s_www_path=NULL;
 202         bytes_read=0;
 203         st_bugs=0;
 204         perform=0;
 205
 206 #ifdef FIONBIO
 207         t_nbio=0;
 208 #endif
 209 #ifdef WIN32
 210         exitNow = 0;            /* Set when it's time to exit main */
 211 #endif
 212         }
 213
 214 /***********************************************************************
 215  * usage - display usage message
 216  */
 217 static void s_time_usage(void)
 218 {
 219         static char umsg[] = "\
 220 -time arg     - max number of seconds to collect data, default %d\n\
 221 -verify arg   - turn on peer certificate verification, arg == depth\n\
 222 -cert arg     - certificate file to use, PEM format assumed\n\
 223 -key arg      - RSA file to use, PEM format assumed, key is in cert file\n\
 224                 file if not specified by this option\n\
 225 -CApath arg   - PEM format directory of CA's\n\
 226 -CAfile arg   - PEM format file of CA's\n\
 227 -cipher       - prefered cipher to use, play with 'openssl ciphers'\n\n";
 228
 229         printf( "usage: s_time <args>\n\n" );
 230
 231         printf("-connect host:port - host:port to connect to (default is %s)\n",SSL_CONNECT_NAME);
 232 #ifdef FIONBIO
 233         printf("-nbio         - Run with non-blocking IO\n");
 234         printf("-ssl2         - Just use SSLv2\n");
 235         printf("-ssl3         - Just use SSLv3\n");
 236         printf("-bugs         - Turn on SSL bug compatability\n");
 237         printf("-new          - Just time new connections\n");
 238         printf("-reuse        - Just time connection reuse\n");
 239         printf("-www page     - Retrieve 'page' from the site\n");
 240 #endif
 241         printf( umsg,SECONDS );
 242 }
 243
 244 /***********************************************************************
 245  * parseArgs - Parse command line arguments and initialize data
 246  *
 247  * Returns 0 if ok, -1 on bad args
 248  */
 249 static int parseArgs(int argc, char **argv)
 250 {
 251     int badop = 0;
 252
 253     verify_depth=0;
 254     verify_error=X509_V_OK;
 255 #ifdef FIONBIO
 256     t_nbio=0;
 257 #endif
 258
 259         apps_startup();
 260         s_time_init();
 261
 262         if (bio_err == NULL)
 263                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 264
 265     argc--;
 266     argv++;
 267
 268     while (argc >= 1) {
 269         if (strcmp(*argv,"-connect") == 0)
 270                 {
 271                 if (--argc < 1) goto bad;
 272                 host= *(++argv);
 273                 }
 274 #if 0
 275         else if( strcmp(*argv,"-host") == 0)
 276                 {
 277                 if (--argc < 1) goto bad;
 278                 host= *(++argv);
 279                 }
 280         else if( strcmp(*argv,"-port") == 0)
 281                 {
 282                 if (--argc < 1) goto bad;
 283                 port= *(++argv);
 284                 }
 285 #endif
 286         else if (strcmp(*argv,"-reuse") == 0)
 287                 perform=2;
 288         else if (strcmp(*argv,"-new") == 0)
 289                 perform=1;
 290         else if( strcmp(*argv,"-verify") == 0) {
 291
 292             tm_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 293             if (--argc < 1) goto bad;
 294             verify_depth=atoi(*(++argv));
 295             BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 296
 297         } else if( strcmp(*argv,"-cert") == 0) {
 298
 299             if (--argc < 1) goto bad;
 300             t_cert_file= *(++argv);
 301
 302         } else if( strcmp(*argv,"-key") == 0) {
 303
 304             if (--argc < 1) goto bad;
 305             t_key_file= *(++argv);
 306
 307         } else if( strcmp(*argv,"-CApath") == 0) {
 308
 309             if (--argc < 1) goto bad;
 310             CApath= *(++argv);
 311
 312         } else if( strcmp(*argv,"-CAfile") == 0) {
 313
 314             if (--argc < 1) goto bad;
 315             CAfile= *(++argv);
 316
 317         } else if( strcmp(*argv,"-cipher") == 0) {
 318
 319             if (--argc < 1) goto bad;
 320             tm_cipher= *(++argv);
 321         }
 322 #ifdef FIONBIO
 323         else if(strcmp(*argv,"-nbio") == 0) {
 324             t_nbio=1;
 325         }
 326 #endif
 327         else if(strcmp(*argv,"-www") == 0)
 328                 {
 329                 if (--argc < 1) goto bad;
 330                 s_www_path= *(++argv);
 331                 }
 332         else if(strcmp(*argv,"-bugs") == 0)
 333             st_bugs=1;
 334 #ifndef NO_SSL2
 335         else if(strcmp(*argv,"-ssl2") == 0)
 336             s_time_meth=SSLv2_client_method();
 337 #endif
 338 #ifndef NO_SSL3
 339         else if(strcmp(*argv,"-ssl3") == 0)
 340             s_time_meth=SSLv3_client_method();
 341 #endif
 342         else if( strcmp(*argv,"-time") == 0) {
 343
 344             if (--argc < 1) goto bad;
 345             maxTime= atoi(*(++argv));
 346         }
 347         else {
 348             BIO_printf(bio_err,"unknown option %s\n",*argv);
 349             badop=1;
 350             break;
 351         }
 352
 353         argc--;
 354         argv++;
 355     }
 356
 357     if (perform == 0) perform=3;
 358
 359     if(badop) {
 360 bad:
 361                 s_time_usage();
 362                 return -1;
 363     }
 364
 365         return 0;                       /* Valid args */
 366 }
 367
 368 /***********************************************************************
 369  * TIME - time functions
 370  */
 371 #define START   0
 372 #define STOP    1
 373
 374 static double tm_Time_F(int s)
 375         {
 376         static double ret;
 377 #ifdef TIMES
 378         static struct tms tstart,tend;
 379
 380         if(s == START) {
 381                 times(&tstart);
 382                 return(0);
 383         } else {
 384                 times(&tend);
 385                 ret=((double)(tend.tms_utime-tstart.tms_utime))/HZ;
 386                 return((ret == 0.0)?1e-6:ret);
 387         }
 388 #else /* !times() */
 389         static struct timeb tstart,tend;
 390         long i;
 391
 392         if(s == START) {
 393                 ftime(&tstart);
 394                 return(0);
 395         } else {
 396                 ftime(&tend);
 397                 i=(long)tend.millitm-(long)tstart.millitm;
 398                 ret=((double)(tend.time-tstart.time))+((double)i)/1000.0;
 399                 return((ret == 0.0)?1e-6:ret);
 400         }
 401 #endif
 402 }
 403
 404 /***********************************************************************
 405  * MAIN - main processing area for client
 406  *                      real name depends on MONOLITH
 407  */
 408 int MAIN(int argc, char **argv)
 409         {
 410         double totalTime = 0.0;
 411         int nConn = 0;
 412         SSL *scon=NULL;
 413         long finishtime=0;
 414         int ret=1,i;
 415         MS_STATIC char buf[1024*8];
 416         int ver;
 417
 418 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 419         s_time_meth=SSLv23_client_method();
 420 #elif !defined(NO_SSL3)
 421         s_time_meth=SSLv3_client_method();
 422 #elif !defined(NO_SSL2)
 423         s_time_meth=SSLv2_client_method();
 424 #endif
 425
 426         /* parse the command line arguments */
 427         if( parseArgs( argc, argv ) < 0 )
 428                 goto end;
 429
 430         SSLeay_add_ssl_algorithms();
 431         if ((tm_ctx=SSL_CTX_new(s_time_meth)) == NULL) return(1);
 432
 433         SSL_CTX_set_quiet_shutdown(tm_ctx,1);
 434
 435         if (st_bugs) SSL_CTX_set_options(tm_ctx,SSL_OP_ALL);
 436         SSL_CTX_set_cipher_list(tm_ctx,tm_cipher);
 437         if(!set_cert_stuff(tm_ctx,t_cert_file,t_key_file))
 438                 goto end;
 439
 440         SSL_load_error_strings();
 441
 442         if ((!SSL_CTX_load_verify_locations(tm_ctx,CAfile,CApath)) ||
 443                 (!SSL_CTX_set_default_verify_paths(tm_ctx)))
 444                 {
 445                 /* BIO_printf(bio_err,"error seting default verify locations\n"); */
 446                 ERR_print_errors(bio_err);
 447                 /* goto end; */
 448                 }
 449
 450         if (tm_cipher == NULL)
 451                 tm_cipher = getenv("SSL_CIPHER");
 452
 453         if (tm_cipher == NULL ) {
 454                 fprintf( stderr, "No CIPHER specified\n" );
 455 /*              EXIT(1); */
 456         }
 457
 458         if (!(perform & 1)) goto next;
 459         printf( "Collecting connection statistics for %d seconds\n", maxTime );
 460
 461         /* Loop and time how long it takes to make connections */
 462
 463         bytes_read=0;
 464         finishtime=(long)time(NULL)+maxTime;
 465         tm_Time_F(START);
 466         for (;;)
 467                 {
 468                 if (finishtime < time(NULL)) break;
 469 #ifdef WIN32_STUFF
 470
 471                 if( flushWinMsgs(0) == -1 )
 472                         goto end;
 473
 474                 if( waitingToDie || exitNow )           /* we're dead */
 475                         goto end;
 476 #endif
 477
 478                 if( (scon = doConnection( NULL )) == NULL )
 479                         goto end;
 480
 481                 if (s_www_path != NULL)
 482                         {
 483                         sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 484                         SSL_write(scon,buf,strlen(buf));
 485                         while ((i=SSL_read(scon,buf,sizeof(buf))) > 0)
 486                                 bytes_read+=i;
 487                         }
 488
 489 #ifdef NO_SHUTDOWN
 490                 SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 491 #else
 492                 SSL_shutdown(scon);
 493 #endif
 494                 SHUTDOWN2(SSL_get_fd(scon));
 495
 496                 nConn += 1;
 497                 if (SSL_session_reused(scon))
 498                         ver='r';
 499                 else
 500                         {
 501                         ver=SSL_version(scon);
 502                         if (ver == TLS1_VERSION)
 503                                 ver='t';
 504                         else if (ver == SSL3_VERSION)
 505                                 ver='3';
 506                         else if (ver == SSL2_VERSION)
 507                                 ver='2';
 508                         else
 509                                 ver='*';
 510                         }
 511                 fputc(ver,stdout);
 512                 fflush(stdout);
 513
 514                 SSL_free( scon );
 515                 scon=NULL;
 516                 }
 517         totalTime += tm_Time_F(STOP); /* Add the time for this iteration */
 518
 519         i=(int)(time(NULL)-finishtime+maxTime);
 520         printf( "\n\n%d connections in %.2fs; %.2f connections/user sec, bytes read %ld\n", nConn, totalTime, ((double)nConn/totalTime),bytes_read);
 521         printf( "%d connections in %ld real seconds, %ld bytes read per connection\n",nConn,time(NULL)-finishtime+maxTime,bytes_read/nConn);
 522
 523         /* Now loop and time connections using the same session id over and over */
 524
 525 next:
 526         if (!(perform & 2)) goto end;
 527         printf( "\n\nNow timing with session id reuse.\n" );
 528
 529         /* Get an SSL object so we can reuse the session id */
 530         if( (scon = doConnection( NULL )) == NULL )
 531                 {
 532                 fprintf( stderr, "Unable to get connection\n" );
 533                 goto end;
 534                 }
 535
 536         if (s_www_path != NULL)
 537                 {
 538                 sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 539                 SSL_write(scon,buf,strlen(buf));
 540                 while (SSL_read(scon,buf,sizeof(buf)) > 0)
 541                         ;
 542                 }
 543 #ifdef NO_SHUTDOWN
 544         SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 545 #else
 546         SSL_shutdown(scon);
 547 #endif
 548         SHUTDOWN2(SSL_get_fd(scon));
 549
 550         nConn = 0;
 551         totalTime = 0.0;
 552
 553         finishtime=time(NULL)+maxTime;
 554
 555         printf( "starting\n" );
 556         bytes_read=0;
 557         tm_Time_F(START);
 558
 559         for (;;)
 560                 {
 561                 if (finishtime < time(NULL)) break;
 562
 563 #ifdef WIN32_STUFF
 564                 if( flushWinMsgs(0) == -1 )
 565                         goto end;
 566
 567                 if( waitingToDie || exitNow )   /* we're dead */
 568                         goto end;
 569 #endif
 570
 571                 if( (doConnection( scon )) == NULL )
 572                         goto end;
 573
 574                 if (s_www_path)
 575                         {
 576                         sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 577                         SSL_write(scon,buf,strlen(buf));
 578                         while ((i=SSL_read(scon,buf,sizeof(buf))) > 0)
 579                                 bytes_read+=i;
 580                         }
 581
 582 #ifdef NO_SHUTDOWN
 583                 SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 584 #else
 585                 SSL_shutdown(scon);
 586 #endif
 587                 SHUTDOWN2(SSL_get_fd(scon));
 588
 589                 nConn += 1;
 590                 if (SSL_session_reused(scon))
 591                         ver='r';
 592                 else
 593                         {
 594                         ver=SSL_version(scon);
 595                         if (ver == TLS1_VERSION)
 596                                 ver='t';
 597                         else if (ver == SSL3_VERSION)
 598                                 ver='3';
 599                         else if (ver == SSL2_VERSION)
 600                                 ver='2';
 601                         else
 602                                 ver='*';
 603                         }
 604                 fputc(ver,stdout);
 605                 fflush(stdout);
 606                 }
 607         totalTime += tm_Time_F(STOP); /* Add the time for this iteration*/
 608
 609
 610         printf( "\n\n%d connections in %.2fs; %.2f connections/user sec, bytes read %ld\n", nConn, totalTime, ((double)nConn/totalTime),bytes_read);
 611         printf( "%d connections in %ld real seconds, %ld bytes read per connection\n",nConn,time(NULL)-finishtime+maxTime,bytes_read/nConn);
 612
 613         ret=0;
 614 end:
 615         if (scon != NULL) SSL_free(scon);
 616
 617         if (tm_ctx != NULL)
 618                 {
 619                 SSL_CTX_free(tm_ctx);
 620                 tm_ctx=NULL;
 621                 }
 622         EXIT(ret);
 623         }
 624
 625 /***********************************************************************
 626  * doConnection - make a connection
 627  * Args:
 628  *              scon    = earlier ssl connection for session id, or NULL
 629  * Returns:
 630  *              SSL *   = the connection pointer.
 631  */
 632 static SSL *doConnection(SSL *scon)
 633         {
 634         BIO *conn;
 635         SSL *serverCon;
 636         int width, i;
 637         fd_set readfds;
 638
 639         if ((conn=BIO_new(BIO_s_connect())) == NULL)
 640                 return(NULL);
 641
 642 /*      BIO_set_conn_port(conn,port);*/
 643         BIO_set_conn_hostname(conn,host);
 644
 645         if (scon == NULL)
 646                 serverCon=(SSL *)SSL_new(tm_ctx);
 647         else
 648                 {
 649                 serverCon=scon;
 650                 SSL_set_connect_state(serverCon);
 651                 }
 652
 653         SSL_set_bio(serverCon,conn,conn);
 654
 655 #if 0
 656         if( scon != NULL )
 657                 SSL_set_session(serverCon,SSL_get_session(scon));
 658 #endif
 659
 660         /* ok, lets connect */
 661         for(;;) {
 662                 i=SSL_connect(serverCon);
 663                 if (BIO_sock_should_retry(i))
 664                         {
 665                         BIO_printf(bio_err,"DELAY\n");
 666
 667                         i=SSL_get_fd(serverCon);
 668                         width=i+1;
 669                         FD_ZERO(&readfds);
 670                         FD_SET(i,&readfds);
 671                         select(width,&readfds,NULL,NULL,NULL);
 672                         continue;
 673                         }
 674                 break;
 675                 }
 676         if(i <= 0)
 677                 {
 678                 BIO_printf(bio_err,"ERROR\n");
 679                 if (verify_error != X509_V_OK)
 680                         BIO_printf(bio_err,"verify error:%s\n",
 681                                 X509_verify_cert_error_string(verify_error));
 682                 else
 683                         ERR_print_errors(bio_err);
 684                 if (scon == NULL)
 685                         SSL_free(serverCon);
 686                 return NULL;
 687                 }
 688
 689         return serverCon;
 690         }
 691
 692