apps/s_client.c

   1 /* apps/s_client.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 /* With IPv6, it looks like Digital has mixed up the proper order of
  60    recursive header file inclusion, resulting in the compiler complaining
  61    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
  62    is needed to have fileno() declared correctly...  So let's define u_int */
  63 #if defined(__DECC) && !defined(__U_INT)
  64 #define __U_INT
  65 typedef unsigned int u_int;
  66 #endif
  67
  68 #include <stdio.h>
  69 #include <stdlib.h>
  70 #include <string.h>
  71 #define USE_SOCKETS
  72 #ifdef NO_STDIO
  73 #define APPS_WIN16
  74 #endif
  75 #include "apps.h"
  76 #include <openssl/x509.h>
  77 #include <openssl/ssl.h>
  78 #include <openssl/err.h>
  79 #include <openssl/pem.h>
  80 #include "s_apps.h"
  81
  82 #if (defined(VMS) && __VMS_VER < 70000000)
  83 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
  84 #undef FIONBIO
  85 #endif
  86
  87 #if defined(NO_RSA) && !defined(NO_SSL2)
  88 #define NO_SSL2
  89 #endif
  90
  91 #undef PROG
  92 #define PROG    s_client_main
  93
  94 /*#define SSL_HOST_NAME "www.netscape.com" */
  95 /*#define SSL_HOST_NAME "193.118.187.102" */
  96 #define SSL_HOST_NAME   "localhost"
  97
  98 /*#define TEST_CERT "client.pem" */ /* no default cert. */
  99
 100 #undef BUFSIZZ
 101 #define BUFSIZZ 1024*8
 102
 103 extern int verify_depth;
 104 extern int verify_error;
 105
 106 #ifdef FIONBIO
 107 static int c_nbio=0;
 108 #endif
 109 static int c_Pause=0;
 110 static int c_debug=0;
 111 static int c_showcerts=0;
 112
 113 static void sc_usage(void);
 114 static void print_stuff(BIO *berr,SSL *con,int full);
 115 static BIO *bio_c_out=NULL;
 116 static int c_quiet=0;
 117
 118 static void sc_usage(void)
 119         {
 120         BIO_printf(bio_err,"usage: s_client args\n");
 121         BIO_printf(bio_err,"\n");
 122         BIO_printf(bio_err," -host host     - use -connect instead\n");
 123         BIO_printf(bio_err," -port port     - use -connect instead\n");
 124         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 125
 126         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 127         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 128         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
 129         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 130         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 131         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 132         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 133         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 134         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 135         BIO_printf(bio_err," -debug        - extra output\n");
 136         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 137         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 138 #ifdef FIONBIO
 139         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 140 #endif
 141         BIO_printf(bio_err," -quiet        - no s_client output\n");
 142         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 143         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 144         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 145         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 146         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 147         BIO_printf(bio_err," -cipher       - prefered cipher to use, use the 'openssl ciphers'\n");
 148         BIO_printf(bio_err,"                 command to see what is available\n");
 149
 150         }
 151
 152 int MAIN(int argc, char **argv)
 153         {
 154         int off=0;
 155         SSL *con=NULL,*con2=NULL;
 156         int s,k,width,state=0;
 157         char *cbuf=NULL,*sbuf=NULL;
 158         int cbuf_len,cbuf_off;
 159         int sbuf_len,sbuf_off;
 160         fd_set readfds,writefds;
 161         short port=PORT;
 162         int full_log=1;
 163         char *host=SSL_HOST_NAME;
 164         char *cert_file=NULL,*key_file=NULL;
 165         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 166         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 167         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 168         SSL_CTX *ctx=NULL;
 169         int ret=1,in_init=1,i,nbio_test=0;
 170         SSL_METHOD *meth=NULL;
 171         BIO *sbio;
 172         /*static struct timeval timeout={10,0};*/
 173
 174 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 175         meth=SSLv23_client_method();
 176 #elif !defined(NO_SSL3)
 177         meth=SSLv3_client_method();
 178 #elif !defined(NO_SSL2)
 179         meth=SSLv2_client_method();
 180 #endif
 181
 182         apps_startup();
 183         c_Pause=0;
 184         c_quiet=0;
 185         c_debug=0;
 186         c_showcerts=0;
 187
 188         if (bio_err == NULL)
 189                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 190
 191         if (    ((cbuf=Malloc(BUFSIZZ)) == NULL) ||
 192                 ((sbuf=Malloc(BUFSIZZ)) == NULL))
 193                 {
 194                 BIO_printf(bio_err,"out of memory\n");
 195                 goto end;
 196                 }
 197
 198         verify_depth=0;
 199         verify_error=X509_V_OK;
 200 #ifdef FIONBIO
 201         c_nbio=0;
 202 #endif
 203
 204         argc--;
 205         argv++;
 206         while (argc >= 1)
 207                 {
 208                 if      (strcmp(*argv,"-host") == 0)
 209                         {
 210                         if (--argc < 1) goto bad;
 211                         host= *(++argv);
 212                         }
 213                 else if (strcmp(*argv,"-port") == 0)
 214                         {
 215                         if (--argc < 1) goto bad;
 216                         port=atoi(*(++argv));
 217                         if (port == 0) goto bad;
 218                         }
 219                 else if (strcmp(*argv,"-connect") == 0)
 220                         {
 221                         if (--argc < 1) goto bad;
 222                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 223                                 goto bad;
 224                         }
 225                 else if (strcmp(*argv,"-verify") == 0)
 226                         {
 227                         verify=SSL_VERIFY_PEER;
 228                         if (--argc < 1) goto bad;
 229                         verify_depth=atoi(*(++argv));
 230                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 231                         }
 232                 else if (strcmp(*argv,"-cert") == 0)
 233                         {
 234                         if (--argc < 1) goto bad;
 235                         cert_file= *(++argv);
 236                         }
 237                 else if (strcmp(*argv,"-quiet") == 0)
 238                         c_quiet=1;
 239                 else if (strcmp(*argv,"-pause") == 0)
 240                         c_Pause=1;
 241                 else if (strcmp(*argv,"-debug") == 0)
 242                         c_debug=1;
 243                 else if (strcmp(*argv,"-showcerts") == 0)
 244                         c_showcerts=1;
 245                 else if (strcmp(*argv,"-nbio_test") == 0)
 246                         nbio_test=1;
 247                 else if (strcmp(*argv,"-state") == 0)
 248                         state=1;
 249 #ifndef NO_SSL2
 250                 else if (strcmp(*argv,"-ssl2") == 0)
 251                         meth=SSLv2_client_method();
 252 #endif
 253 #ifndef NO_SSL3
 254                 else if (strcmp(*argv,"-ssl3") == 0)
 255                         meth=SSLv3_client_method();
 256 #endif
 257 #ifndef NO_TLS1
 258                 else if (strcmp(*argv,"-tls1") == 0)
 259                         meth=TLSv1_client_method();
 260 #endif
 261                 else if (strcmp(*argv,"-bugs") == 0)
 262                         bugs=1;
 263                 else if (strcmp(*argv,"-key") == 0)
 264                         {
 265                         if (--argc < 1) goto bad;
 266                         key_file= *(++argv);
 267                         }
 268                 else if (strcmp(*argv,"-reconnect") == 0)
 269                         {
 270                         reconnect=5;
 271                         }
 272                 else if (strcmp(*argv,"-CApath") == 0)
 273                         {
 274                         if (--argc < 1) goto bad;
 275                         CApath= *(++argv);
 276                         }
 277                 else if (strcmp(*argv,"-CAfile") == 0)
 278                         {
 279                         if (--argc < 1) goto bad;
 280                         CAfile= *(++argv);
 281                         }
 282                 else if (strcmp(*argv,"-no_tls1") == 0)
 283                         off|=SSL_OP_NO_TLSv1;
 284                 else if (strcmp(*argv,"-no_ssl3") == 0)
 285                         off|=SSL_OP_NO_SSLv3;
 286                 else if (strcmp(*argv,"-no_ssl2") == 0)
 287                         off|=SSL_OP_NO_SSLv2;
 288                 else if (strcmp(*argv,"-cipher") == 0)
 289                         {
 290                         if (--argc < 1) goto bad;
 291                         cipher= *(++argv);
 292                         }
 293 #ifdef FIONBIO
 294                 else if (strcmp(*argv,"-nbio") == 0)
 295                         { c_nbio=1; }
 296 #endif
 297                 else
 298                         {
 299                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 300                         badop=1;
 301                         break;
 302                         }
 303                 argc--;
 304                 argv++;
 305                 }
 306         if (badop)
 307                 {
 308 bad:
 309                 sc_usage();
 310                 goto end;
 311                 }
 312
 313         if (bio_c_out == NULL)
 314                 {
 315                 if (c_quiet)
 316                         {
 317                         bio_c_out=BIO_new(BIO_s_null());
 318                         }
 319                 else
 320                         {
 321                         if (bio_c_out == NULL)
 322                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 323                         }
 324                 }
 325
 326         SSLeay_add_ssl_algorithms();
 327         ctx=SSL_CTX_new(meth);
 328         if (ctx == NULL)
 329                 {
 330                 ERR_print_errors(bio_err);
 331                 goto end;
 332                 }
 333
 334         if (bugs)
 335                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 336         else
 337                 SSL_CTX_set_options(ctx,off);
 338
 339         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 340         if (cipher != NULL)
 341                 SSL_CTX_set_cipher_list(ctx,cipher);
 342 #if 0
 343         else
 344                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 345 #endif
 346
 347         SSL_CTX_set_verify(ctx,verify,verify_callback);
 348         if (!set_cert_stuff(ctx,cert_file,key_file))
 349                 goto end;
 350
 351         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 352                 (!SSL_CTX_set_default_verify_paths(ctx)))
 353                 {
 354                 /* BIO_printf(bio_err,"error seting default verify locations\n"); */
 355                 ERR_print_errors(bio_err);
 356                 /* goto end; */
 357                 }
 358
 359         SSL_load_error_strings();
 360
 361         con=(SSL *)SSL_new(ctx);
 362 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 363
 364 re_start:
 365
 366         if (init_client(&s,host,port) == 0)
 367                 {
 368                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 369                 SHUTDOWN(s);
 370                 goto end;
 371                 }
 372         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 373
 374 #ifdef FIONBIO
 375         if (c_nbio)
 376                 {
 377                 unsigned long l=1;
 378                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 379                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 380                         {
 381                         ERR_print_errors(bio_err);
 382                         goto end;
 383                         }
 384                 }
 385 #endif
 386         if (c_Pause & 0x01) con->debug=1;
 387         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 388
 389         if (nbio_test)
 390                 {
 391                 BIO *test;
 392
 393                 test=BIO_new(BIO_f_nbio_test());
 394                 sbio=BIO_push(test,sbio);
 395                 }
 396
 397         if (c_debug)
 398                 {
 399                 con->debug=1;
 400                 BIO_set_callback(sbio,bio_dump_cb);
 401                 BIO_set_callback_arg(sbio,bio_c_out);
 402                 }
 403
 404         SSL_set_bio(con,sbio,sbio);
 405         SSL_set_connect_state(con);
 406
 407         /* ok, lets connect */
 408         width=SSL_get_fd(con)+1;
 409
 410         read_tty=1;
 411         write_tty=0;
 412         tty_on=0;
 413         read_ssl=1;
 414         write_ssl=1;
 415
 416         cbuf_len=0;
 417         cbuf_off=0;
 418         sbuf_len=0;
 419         sbuf_off=0;
 420
 421         for (;;)
 422                 {
 423                 FD_ZERO(&readfds);
 424                 FD_ZERO(&writefds);
 425
 426                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
 427                         {
 428                         in_init=1;
 429                         tty_on=0;
 430                         }
 431                 else
 432                         {
 433                         tty_on=1;
 434                         if (in_init)
 435                                 {
 436                                 in_init=0;
 437                                 print_stuff(bio_c_out,con,full_log);
 438                                 if (full_log > 0) full_log--;
 439
 440                                 if (reconnect)
 441                                         {
 442                                         reconnect--;
 443                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
 444                                         SSL_shutdown(con);
 445                                         SSL_set_connect_state(con);
 446                                         SHUTDOWN(SSL_get_fd(con));
 447                                         goto re_start;
 448                                         }
 449                                 }
 450                         }
 451
 452                 ssl_pending = read_ssl && SSL_pending(con);
 453
 454                 if (!ssl_pending)
 455                         {
 456 #ifndef WINDOWS
 457                         if (tty_on)
 458                                 {
 459                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
 460                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
 461                                 }
 462 #endif
 463                         if (read_ssl)
 464                                 FD_SET(SSL_get_fd(con),&readfds);
 465                         if (write_ssl)
 466                                 FD_SET(SSL_get_fd(con),&writefds);
 467
 468 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
 469                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 470
 471                         /* Note: under VMS with SOCKETSHR the second parameter
 472                          * is currently of type (int *) whereas under other
 473                          * systems it is (void *) if you don't have a cast it
 474                          * will choke the compiler: if you do have a cast then
 475                          * you can either go for (int *) or (void *).
 476                          */
 477                         i=select(width,(void *)&readfds,(void *)&writefds,
 478                                  NULL,NULL);
 479                         if ( i < 0)
 480                                 {
 481                                 BIO_printf(bio_err,"bad select %d\n",
 482                                 get_last_socket_error());
 483                                 goto shut;
 484                                 /* goto end; */
 485                                 }
 486                         }
 487
 488                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
 489                         {
 490                         k=SSL_write(con,&(cbuf[cbuf_off]),
 491                                 (unsigned int)cbuf_len);
 492                         switch (SSL_get_error(con,k))
 493                                 {
 494                         case SSL_ERROR_NONE:
 495                                 cbuf_off+=k;
 496                                 cbuf_len-=k;
 497                                 if (k <= 0) goto end;
 498                                 /* we have done a  write(con,NULL,0); */
 499                                 if (cbuf_len <= 0)
 500                                         {
 501                                         read_tty=1;
 502                                         write_ssl=0;
 503                                         }
 504                                 else /* if (cbuf_len > 0) */
 505                                         {
 506                                         read_tty=0;
 507                                         write_ssl=1;
 508                                         }
 509                                 break;
 510                         case SSL_ERROR_WANT_WRITE:
 511                                 BIO_printf(bio_c_out,"write W BLOCK\n");
 512                                 write_ssl=1;
 513                                 read_tty=0;
 514                                 break;
 515                         case SSL_ERROR_WANT_READ:
 516                                 BIO_printf(bio_c_out,"write R BLOCK\n");
 517                                 write_tty=0;
 518                                 read_ssl=1;
 519                                 write_ssl=0;
 520                                 break;
 521                         case SSL_ERROR_WANT_X509_LOOKUP:
 522                                 BIO_printf(bio_c_out,"write X BLOCK\n");
 523                                 break;
 524                         case SSL_ERROR_ZERO_RETURN:
 525                                 if (cbuf_len != 0)
 526                                         {
 527                                         BIO_printf(bio_c_out,"shutdown\n");
 528                                         goto shut;
 529                                         }
 530                                 else
 531                                         {
 532                                         read_tty=1;
 533                                         write_ssl=0;
 534                                         break;
 535                                         }
 536
 537                         case SSL_ERROR_SYSCALL:
 538                                 if ((k != 0) || (cbuf_len != 0))
 539                                         {
 540                                         BIO_printf(bio_err,"write:errno=%d\n",
 541                                                 get_last_socket_error());
 542                                         goto shut;
 543                                         }
 544                                 else
 545                                         {
 546                                         read_tty=1;
 547                                         write_ssl=0;
 548                                         }
 549                                 break;
 550                         case SSL_ERROR_SSL:
 551                                 ERR_print_errors(bio_err);
 552                                 goto shut;
 553                                 }
 554                         }
 555 #ifndef WINDOWS
 556                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
 557                         {
 558                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
 559
 560                         if (i <= 0)
 561                                 {
 562                                 BIO_printf(bio_c_out,"DONE\n");
 563                                 goto shut;
 564                                 /* goto end; */
 565                                 }
 566
 567                         sbuf_len-=i;;
 568                         sbuf_off+=i;
 569                         if (sbuf_len <= 0)
 570                                 {
 571                                 read_ssl=1;
 572                                 write_tty=0;
 573                                 }
 574                         }
 575 #endif
 576                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
 577                         {
 578 #ifdef RENEG
 579 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
 580 #endif
 581 #if 1
 582                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
 583 #else
 584 /* Demo for pending and peek :-) */
 585                         k=SSL_read(con,sbuf,16);
 586 { char zbuf[10240];
 587 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
 588 }
 589 #endif
 590
 591                         switch (SSL_get_error(con,k))
 592                                 {
 593                         case SSL_ERROR_NONE:
 594                                 if (k <= 0)
 595                                         goto end;
 596                                 sbuf_off=0;
 597                                 sbuf_len=k;
 598
 599                                 read_ssl=0;
 600                                 write_tty=1;
 601                                 break;
 602                         case SSL_ERROR_WANT_WRITE:
 603                                 BIO_printf(bio_c_out,"read W BLOCK\n");
 604                                 write_ssl=1;
 605                                 read_tty=0;
 606                                 break;
 607                         case SSL_ERROR_WANT_READ:
 608                                 BIO_printf(bio_c_out,"read R BLOCK\n");
 609                                 write_tty=0;
 610                                 read_ssl=1;
 611                                 if ((read_tty == 0) && (write_ssl == 0))
 612                                         write_ssl=1;
 613                                 break;
 614                         case SSL_ERROR_WANT_X509_LOOKUP:
 615                                 BIO_printf(bio_c_out,"read X BLOCK\n");
 616                                 break;
 617                         case SSL_ERROR_SYSCALL:
 618                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
 619                                 goto shut;
 620                         case SSL_ERROR_ZERO_RETURN:
 621                                 BIO_printf(bio_c_out,"closed\n");
 622                                 goto shut;
 623                         case SSL_ERROR_SSL:
 624                                 ERR_print_errors(bio_err);
 625                                 goto shut;
 626                                 /* break; */
 627                                 }
 628                         }
 629
 630 #ifndef WINDOWS
 631                 else if (FD_ISSET(fileno(stdin),&readfds))
 632                         {
 633                         i=read(fileno(stdin),cbuf,BUFSIZZ);
 634
 635                         if ((!c_quiet) && ((i <= 0) || (cbuf[0] == 'Q')))
 636                                 {
 637                                 BIO_printf(bio_err,"DONE\n");
 638                                 goto shut;
 639                                 }
 640
 641                         if ((!c_quiet) && (cbuf[0] == 'R'))
 642                                 {
 643                                 BIO_printf(bio_err,"RENEGOTIATING\n");
 644                                 SSL_renegotiate(con);
 645                                 cbuf_len=0;
 646                                 }
 647                         else
 648                                 {
 649                                 cbuf_len=i;
 650                                 cbuf_off=0;
 651                                 }
 652
 653                         write_ssl=1;
 654                         read_tty=0;
 655                         }
 656 #endif
 657                 }
 658 shut:
 659         SSL_shutdown(con);
 660         SHUTDOWN(SSL_get_fd(con));
 661         ret=0;
 662 end:
 663         if (con != NULL) SSL_free(con);
 664         if (con2 != NULL) SSL_free(con2);
 665         if (ctx != NULL) SSL_CTX_free(ctx);
 666         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); Free(cbuf); }
 667         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); Free(sbuf); }
 668         if (bio_c_out != NULL)
 669                 {
 670                 BIO_free(bio_c_out);
 671                 bio_c_out=NULL;
 672                 }
 673         EXIT(ret);
 674         }
 675
 676
 677 static void print_stuff(BIO *bio, SSL *s, int full)
 678         {
 679         X509 *peer=NULL;
 680         char *p;
 681         static char *space="                ";
 682         char buf[BUFSIZ];
 683         STACK_OF(X509) *sk;
 684         STACK_OF(X509_NAME) *sk2;
 685         SSL_CIPHER *c;
 686         X509_NAME *xn;
 687         int j,i;
 688
 689         if (full)
 690                 {
 691                 int got_a_chain = 0;
 692
 693                 sk=SSL_get_peer_cert_chain(s);
 694                 if (sk != NULL)
 695                         {
 696                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
 697
 698                         BIO_printf(bio,"---\nCertificate chain\n");
 699                         for (i=0; i<sk_X509_num(sk); i++)
 700                                 {
 701                                 X509_NAME_oneline(X509_get_subject_name(
 702                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 703                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
 704                                 X509_NAME_oneline(X509_get_issuer_name(
 705                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 706                                 BIO_printf(bio,"   i:%s\n",buf);
 707                                 if (c_showcerts)
 708                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
 709                                 }
 710                         }
 711
 712                 BIO_printf(bio,"---\n");
 713                 peer=SSL_get_peer_certificate(s);
 714                 if (peer != NULL)
 715                         {
 716                         BIO_printf(bio,"Server certificate\n");
 717                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
 718                                 PEM_write_bio_X509(bio,peer);
 719                         X509_NAME_oneline(X509_get_subject_name(peer),
 720                                 buf,BUFSIZ);
 721                         BIO_printf(bio,"subject=%s\n",buf);
 722                         X509_NAME_oneline(X509_get_issuer_name(peer),
 723                                 buf,BUFSIZ);
 724                         BIO_printf(bio,"issuer=%s\n",buf);
 725                         }
 726                 else
 727                         BIO_printf(bio,"no peer certificate available\n");
 728
 729                 sk2=SSL_get_client_CA_list(s);
 730                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
 731                         {
 732                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
 733                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
 734                                 {
 735                                 xn=sk_X509_NAME_value(sk2,i);
 736                                 X509_NAME_oneline(xn,buf,sizeof(buf));
 737                                 BIO_write(bio,buf,strlen(buf));
 738                                 BIO_write(bio,"\n",1);
 739                                 }
 740                         }
 741                 else
 742                         {
 743                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
 744                         }
 745                 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
 746                 if (p != NULL)
 747                         {
 748                         /* This works only for SSL 2.  In later protocol
 749                          * versions, the client does not know what other
 750                          * ciphers (in addition to the one to be used
 751                          * in the current connection) the server supports. */
 752
 753                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
 754                         j=i=0;
 755                         while (*p)
 756                                 {
 757                                 if (*p == ':')
 758                                         {
 759                                         BIO_write(bio,space,15-j%25);
 760                                         i++;
 761                                         j=0;
 762                                         BIO_write(bio,((i%3)?" ":"\n"),1);
 763                                         }
 764                                 else
 765                                         {
 766                                         BIO_write(bio,p,1);
 767                                         j++;
 768                                         }
 769                                 p++;
 770                                 }
 771                         BIO_write(bio,"\n",1);
 772                         }
 773
 774                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
 775                         BIO_number_read(SSL_get_rbio(s)),
 776                         BIO_number_written(SSL_get_wbio(s)));
 777                 }
 778         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
 779         c=SSL_get_current_cipher(s);
 780         BIO_printf(bio,"%s, Cipher is %s\n",
 781                 SSL_CIPHER_get_version(c),
 782                 SSL_CIPHER_get_name(c));
 783         if (peer != NULL) {
 784                 EVP_PKEY *pktmp;
 785                 pktmp = X509_get_pubkey(peer);
 786                 BIO_printf(bio,"Server public key is %d bit\n",
 787                                                          EVP_PKEY_bits(pktmp));
 788                 EVP_PKEY_free(pktmp);
 789         }
 790         SSL_SESSION_print(bio,SSL_get_session(s));
 791         BIO_printf(bio,"---\n");
 792         if (peer != NULL)
 793                 X509_free(peer);
 794         }
 795