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 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #ifdef NO_STDIO
  63 #define APPS_WIN16
  64 #endif
  65
  66 /* With IPv6, it looks like Digital has mixed up the proper order of
  67    recursive header file inclusion, resulting in the compiler complaining
  68    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
  69    is needed to have fileno() declared correctly...  So let's define u_int */
  70 #if defined(VMS) && defined(__DECC) && !defined(__U_INT)
  71 #define __U_INT
  72 typedef unsigned int u_int;
  73 #endif
  74
  75 #define USE_SOCKETS
  76 #include "apps.h"
  77 #include <openssl/x509.h>
  78 #include <openssl/ssl.h>
  79 #include <openssl/err.h>
  80 #include <openssl/pem.h>
  81 #include "s_apps.h"
  82
  83 #if (defined(VMS) && __VMS_VER < 70000000)
  84 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
  85 #undef FIONBIO
  86 #endif
  87
  88 #if defined(NO_RSA) && !defined(NO_SSL2)
  89 #define NO_SSL2
  90 #endif
  91
  92 #undef PROG
  93 #define PROG    s_client_main
  94
  95 /*#define SSL_HOST_NAME "www.netscape.com" */
  96 /*#define SSL_HOST_NAME "193.118.187.102" */
  97 #define SSL_HOST_NAME   "localhost"
  98
  99 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 100
 101 #undef BUFSIZZ
 102 #define BUFSIZZ 1024*8
 103
 104 extern int verify_depth;
 105 extern int verify_error;
 106
 107 #ifdef FIONBIO
 108 static int c_nbio=0;
 109 #endif
 110 static int c_Pause=0;
 111 static int c_debug=0;
 112 static int c_showcerts=0;
 113
 114 static void sc_usage(void);
 115 static void print_stuff(BIO *berr,SSL *con,int full);
 116 static BIO *bio_c_out=NULL;
 117 static int c_quiet=0;
 118
 119 static void sc_usage(void)
 120         {
 121         BIO_printf(bio_err,"usage: s_client args\n");
 122         BIO_printf(bio_err,"\n");
 123         BIO_printf(bio_err," -host host     - use -connect instead\n");
 124         BIO_printf(bio_err," -port port     - use -connect instead\n");
 125         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 126
 127         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 128         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 129         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
 130         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 131         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 132         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 133         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 134         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 135         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 136         BIO_printf(bio_err," -debug        - extra output\n");
 137         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 138         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 139 #ifdef FIONBIO
 140         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 141 #endif
 142         BIO_printf(bio_err," -quiet        - no s_client output\n");
 143         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 144         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 145         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 146         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 147         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 148         BIO_printf(bio_err," -cipher       - prefered cipher to use, use the 'openssl ciphers'\n");
 149         BIO_printf(bio_err,"                 command to see what is available\n");
 150
 151         }
 152
 153 int MAIN(int argc, char **argv)
 154         {
 155         int off=0;
 156         SSL *con=NULL,*con2=NULL;
 157         int s,k,width,state=0;
 158         char *cbuf=NULL,*sbuf=NULL;
 159         int cbuf_len,cbuf_off;
 160         int sbuf_len,sbuf_off;
 161         fd_set readfds,writefds;
 162         short port=PORT;
 163         int full_log=1;
 164         char *host=SSL_HOST_NAME;
 165         char *cert_file=NULL,*key_file=NULL;
 166         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 167         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 168         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 169         SSL_CTX *ctx=NULL;
 170         int ret=1,in_init=1,i,nbio_test=0;
 171         SSL_METHOD *meth=NULL;
 172         BIO *sbio;
 173         /*static struct timeval timeout={10,0};*/
 174
 175 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 176         meth=SSLv23_client_method();
 177 #elif !defined(NO_SSL3)
 178         meth=SSLv3_client_method();
 179 #elif !defined(NO_SSL2)
 180         meth=SSLv2_client_method();
 181 #endif
 182
 183         apps_startup();
 184         c_Pause=0;
 185         c_quiet=0;
 186         c_debug=0;
 187         c_showcerts=0;
 188
 189         if (bio_err == NULL)
 190                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 191
 192         if (    ((cbuf=Malloc(BUFSIZZ)) == NULL) ||
 193                 ((sbuf=Malloc(BUFSIZZ)) == NULL))
 194                 {
 195                 BIO_printf(bio_err,"out of memory\n");
 196                 goto end;
 197                 }
 198
 199         verify_depth=0;
 200         verify_error=X509_V_OK;
 201 #ifdef FIONBIO
 202         c_nbio=0;
 203 #endif
 204
 205         argc--;
 206         argv++;
 207         while (argc >= 1)
 208                 {
 209                 if      (strcmp(*argv,"-host") == 0)
 210                         {
 211                         if (--argc < 1) goto bad;
 212                         host= *(++argv);
 213                         }
 214                 else if (strcmp(*argv,"-port") == 0)
 215                         {
 216                         if (--argc < 1) goto bad;
 217                         port=atoi(*(++argv));
 218                         if (port == 0) goto bad;
 219                         }
 220                 else if (strcmp(*argv,"-connect") == 0)
 221                         {
 222                         if (--argc < 1) goto bad;
 223                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 224                                 goto bad;
 225                         }
 226                 else if (strcmp(*argv,"-verify") == 0)
 227                         {
 228                         verify=SSL_VERIFY_PEER;
 229                         if (--argc < 1) goto bad;
 230                         verify_depth=atoi(*(++argv));
 231                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 232                         }
 233                 else if (strcmp(*argv,"-cert") == 0)
 234                         {
 235                         if (--argc < 1) goto bad;
 236                         cert_file= *(++argv);
 237                         }
 238                 else if (strcmp(*argv,"-quiet") == 0)
 239                         c_quiet=1;
 240                 else if (strcmp(*argv,"-pause") == 0)
 241                         c_Pause=1;
 242                 else if (strcmp(*argv,"-debug") == 0)
 243                         c_debug=1;
 244                 else if (strcmp(*argv,"-showcerts") == 0)
 245                         c_showcerts=1;
 246                 else if (strcmp(*argv,"-nbio_test") == 0)
 247                         nbio_test=1;
 248                 else if (strcmp(*argv,"-state") == 0)
 249                         state=1;
 250 #ifndef NO_SSL2
 251                 else if (strcmp(*argv,"-ssl2") == 0)
 252                         meth=SSLv2_client_method();
 253 #endif
 254 #ifndef NO_SSL3
 255                 else if (strcmp(*argv,"-ssl3") == 0)
 256                         meth=SSLv3_client_method();
 257 #endif
 258 #ifndef NO_TLS1
 259                 else if (strcmp(*argv,"-tls1") == 0)
 260                         meth=TLSv1_client_method();
 261 #endif
 262                 else if (strcmp(*argv,"-bugs") == 0)
 263                         bugs=1;
 264                 else if (strcmp(*argv,"-key") == 0)
 265                         {
 266                         if (--argc < 1) goto bad;
 267                         key_file= *(++argv);
 268                         }
 269                 else if (strcmp(*argv,"-reconnect") == 0)
 270                         {
 271                         reconnect=5;
 272                         }
 273                 else if (strcmp(*argv,"-CApath") == 0)
 274                         {
 275                         if (--argc < 1) goto bad;
 276                         CApath= *(++argv);
 277                         }
 278                 else if (strcmp(*argv,"-CAfile") == 0)
 279                         {
 280                         if (--argc < 1) goto bad;
 281                         CAfile= *(++argv);
 282                         }
 283                 else if (strcmp(*argv,"-no_tls1") == 0)
 284                         off|=SSL_OP_NO_TLSv1;
 285                 else if (strcmp(*argv,"-no_ssl3") == 0)
 286                         off|=SSL_OP_NO_SSLv3;
 287                 else if (strcmp(*argv,"-no_ssl2") == 0)
 288                         off|=SSL_OP_NO_SSLv2;
 289                 else if (strcmp(*argv,"-cipher") == 0)
 290                         {
 291                         if (--argc < 1) goto bad;
 292                         cipher= *(++argv);
 293                         }
 294 #ifdef FIONBIO
 295                 else if (strcmp(*argv,"-nbio") == 0)
 296                         { c_nbio=1; }
 297 #endif
 298                 else
 299                         {
 300                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 301                         badop=1;
 302                         break;
 303                         }
 304                 argc--;
 305                 argv++;
 306                 }
 307         if (badop)
 308                 {
 309 bad:
 310                 sc_usage();
 311                 goto end;
 312                 }
 313
 314         if (bio_c_out == NULL)
 315                 {
 316                 if (c_quiet)
 317                         {
 318                         bio_c_out=BIO_new(BIO_s_null());
 319                         }
 320                 else
 321                         {
 322                         if (bio_c_out == NULL)
 323                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 324                         }
 325                 }
 326
 327         SSLeay_add_ssl_algorithms();
 328         ctx=SSL_CTX_new(meth);
 329         if (ctx == NULL)
 330                 {
 331                 ERR_print_errors(bio_err);
 332                 goto end;
 333                 }
 334
 335         if (bugs)
 336                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 337         else
 338                 SSL_CTX_set_options(ctx,off);
 339
 340         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 341         if (cipher != NULL)
 342                 SSL_CTX_set_cipher_list(ctx,cipher);
 343 #if 0
 344         else
 345                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 346 #endif
 347
 348         SSL_CTX_set_verify(ctx,verify,verify_callback);
 349         if (!set_cert_stuff(ctx,cert_file,key_file))
 350                 goto end;
 351
 352         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 353                 (!SSL_CTX_set_default_verify_paths(ctx)))
 354                 {
 355                 /* BIO_printf(bio_err,"error seting default verify locations\n"); */
 356                 ERR_print_errors(bio_err);
 357                 /* goto end; */
 358                 }
 359
 360         SSL_load_error_strings();
 361
 362         con=(SSL *)SSL_new(ctx);
 363 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 364
 365 re_start:
 366
 367         if (init_client(&s,host,port) == 0)
 368                 {
 369                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 370                 SHUTDOWN(s);
 371                 goto end;
 372                 }
 373         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 374
 375 #ifdef FIONBIO
 376         if (c_nbio)
 377                 {
 378                 unsigned long l=1;
 379                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 380                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 381                         {
 382                         ERR_print_errors(bio_err);
 383                         goto end;
 384                         }
 385                 }
 386 #endif
 387         if (c_Pause & 0x01) con->debug=1;
 388         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 389
 390         if (nbio_test)
 391                 {
 392                 BIO *test;
 393
 394                 test=BIO_new(BIO_f_nbio_test());
 395                 sbio=BIO_push(test,sbio);
 396                 }
 397
 398         if (c_debug)
 399                 {
 400                 con->debug=1;
 401                 BIO_set_callback(sbio,bio_dump_cb);
 402                 BIO_set_callback_arg(sbio,bio_c_out);
 403                 }
 404
 405         SSL_set_bio(con,sbio,sbio);
 406         SSL_set_connect_state(con);
 407
 408         /* ok, lets connect */
 409         width=SSL_get_fd(con)+1;
 410
 411         read_tty=1;
 412         write_tty=0;
 413         tty_on=0;
 414         read_ssl=1;
 415         write_ssl=1;
 416
 417         cbuf_len=0;
 418         cbuf_off=0;
 419         sbuf_len=0;
 420         sbuf_off=0;
 421
 422         for (;;)
 423                 {
 424                 FD_ZERO(&readfds);
 425                 FD_ZERO(&writefds);
 426
 427                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
 428                         {
 429                         in_init=1;
 430                         tty_on=0;
 431                         }
 432                 else
 433                         {
 434                         tty_on=1;
 435                         if (in_init)
 436                                 {
 437                                 in_init=0;
 438                                 print_stuff(bio_c_out,con,full_log);
 439                                 if (full_log > 0) full_log--;
 440
 441                                 if (reconnect)
 442                                         {
 443                                         reconnect--;
 444                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
 445                                         SSL_shutdown(con);
 446                                         SSL_set_connect_state(con);
 447                                         SHUTDOWN(SSL_get_fd(con));
 448                                         goto re_start;
 449                                         }
 450                                 }
 451                         }
 452
 453                 ssl_pending = read_ssl && SSL_pending(con);
 454
 455                 if (!ssl_pending)
 456                         {
 457 #ifndef WINDOWS
 458                         if (tty_on)
 459                                 {
 460                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
 461                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
 462                                 }
 463 #endif
 464                         if (read_ssl)
 465                                 FD_SET(SSL_get_fd(con),&readfds);
 466                         if (write_ssl)
 467                                 FD_SET(SSL_get_fd(con),&writefds);
 468
 469 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
 470                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 471
 472                         /* Note: under VMS with SOCKETSHR the second parameter
 473                          * is currently of type (int *) whereas under other
 474                          * systems it is (void *) if you don't have a cast it
 475                          * will choke the compiler: if you do have a cast then
 476                          * you can either go for (int *) or (void *).
 477                          */
 478                         i=select(width,(void *)&readfds,(void *)&writefds,
 479                                  NULL,NULL);
 480                         if ( i < 0)
 481                                 {
 482                                 BIO_printf(bio_err,"bad select %d\n",
 483                                 get_last_socket_error());
 484                                 goto shut;
 485                                 /* goto end; */
 486                                 }
 487                         }
 488
 489                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
 490                         {
 491                         k=SSL_write(con,&(cbuf[cbuf_off]),
 492                                 (unsigned int)cbuf_len);
 493                         switch (SSL_get_error(con,k))
 494                                 {
 495                         case SSL_ERROR_NONE:
 496                                 cbuf_off+=k;
 497                                 cbuf_len-=k;
 498                                 if (k <= 0) goto end;
 499                                 /* we have done a  write(con,NULL,0); */
 500                                 if (cbuf_len <= 0)
 501                                         {
 502                                         read_tty=1;
 503                                         write_ssl=0;
 504                                         }
 505                                 else /* if (cbuf_len > 0) */
 506                                         {
 507                                         read_tty=0;
 508                                         write_ssl=1;
 509                                         }
 510                                 break;
 511                         case SSL_ERROR_WANT_WRITE:
 512                                 BIO_printf(bio_c_out,"write W BLOCK\n");
 513                                 write_ssl=1;
 514                                 read_tty=0;
 515                                 break;
 516                         case SSL_ERROR_WANT_READ:
 517                                 BIO_printf(bio_c_out,"write R BLOCK\n");
 518                                 write_tty=0;
 519                                 read_ssl=1;
 520                                 write_ssl=0;
 521                                 break;
 522                         case SSL_ERROR_WANT_X509_LOOKUP:
 523                                 BIO_printf(bio_c_out,"write X BLOCK\n");
 524                                 break;
 525                         case SSL_ERROR_ZERO_RETURN:
 526                                 if (cbuf_len != 0)
 527                                         {
 528                                         BIO_printf(bio_c_out,"shutdown\n");
 529                                         goto shut;
 530                                         }
 531                                 else
 532                                         {
 533                                         read_tty=1;
 534                                         write_ssl=0;
 535                                         break;
 536                                         }
 537
 538                         case SSL_ERROR_SYSCALL:
 539                                 if ((k != 0) || (cbuf_len != 0))
 540                                         {
 541                                         BIO_printf(bio_err,"write:errno=%d\n",
 542                                                 get_last_socket_error());
 543                                         goto shut;
 544                                         }
 545                                 else
 546                                         {
 547                                         read_tty=1;
 548                                         write_ssl=0;
 549                                         }
 550                                 break;
 551                         case SSL_ERROR_SSL:
 552                                 ERR_print_errors(bio_err);
 553                                 goto shut;
 554                                 }
 555                         }
 556 #ifndef WINDOWS
 557                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
 558                         {
 559 #ifdef CHARSET_EBCDIC
 560                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
 561 #endif
 562                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
 563
 564                         if (i <= 0)
 565                                 {
 566                                 BIO_printf(bio_c_out,"DONE\n");
 567                                 goto shut;
 568                                 /* goto end; */
 569                                 }
 570
 571                         sbuf_len-=i;;
 572                         sbuf_off+=i;
 573                         if (sbuf_len <= 0)
 574                                 {
 575                                 read_ssl=1;
 576                                 write_tty=0;
 577                                 }
 578                         }
 579 #endif
 580                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
 581                         {
 582 #ifdef RENEG
 583 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
 584 #endif
 585 #if 1
 586                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
 587 #else
 588 /* Demo for pending and peek :-) */
 589                         k=SSL_read(con,sbuf,16);
 590 { char zbuf[10240];
 591 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
 592 }
 593 #endif
 594
 595                         switch (SSL_get_error(con,k))
 596                                 {
 597                         case SSL_ERROR_NONE:
 598                                 if (k <= 0)
 599                                         goto end;
 600                                 sbuf_off=0;
 601                                 sbuf_len=k;
 602
 603                                 read_ssl=0;
 604                                 write_tty=1;
 605                                 break;
 606                         case SSL_ERROR_WANT_WRITE:
 607                                 BIO_printf(bio_c_out,"read W BLOCK\n");
 608                                 write_ssl=1;
 609                                 read_tty=0;
 610                                 break;
 611                         case SSL_ERROR_WANT_READ:
 612                                 BIO_printf(bio_c_out,"read R BLOCK\n");
 613                                 write_tty=0;
 614                                 read_ssl=1;
 615                                 if ((read_tty == 0) && (write_ssl == 0))
 616                                         write_ssl=1;
 617                                 break;
 618                         case SSL_ERROR_WANT_X509_LOOKUP:
 619                                 BIO_printf(bio_c_out,"read X BLOCK\n");
 620                                 break;
 621                         case SSL_ERROR_SYSCALL:
 622                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
 623                                 goto shut;
 624                         case SSL_ERROR_ZERO_RETURN:
 625                                 BIO_printf(bio_c_out,"closed\n");
 626                                 goto shut;
 627                         case SSL_ERROR_SSL:
 628                                 ERR_print_errors(bio_err);
 629                                 goto shut;
 630                                 /* break; */
 631                                 }
 632                         }
 633
 634 #ifndef WINDOWS
 635                 else if (FD_ISSET(fileno(stdin),&readfds))
 636                         {
 637                         i=read(fileno(stdin),cbuf,BUFSIZZ);
 638
 639                         if ((!c_quiet) && ((i <= 0) || (cbuf[0] == 'Q')))
 640                                 {
 641                                 BIO_printf(bio_err,"DONE\n");
 642                                 goto shut;
 643                                 }
 644
 645                         if ((!c_quiet) && (cbuf[0] == 'R'))
 646                                 {
 647                                 BIO_printf(bio_err,"RENEGOTIATING\n");
 648                                 SSL_renegotiate(con);
 649                                 cbuf_len=0;
 650                                 }
 651                         else
 652                                 {
 653                                 cbuf_len=i;
 654                                 cbuf_off=0;
 655 #ifdef CHARSET_EBCDIC
 656                                 ebcdic2ascii(cbuf, cbuf, i);
 657 #endif
 658                                 }
 659
 660                         write_ssl=1;
 661                         read_tty=0;
 662                         }
 663 #endif
 664                 }
 665 shut:
 666         SSL_shutdown(con);
 667         SHUTDOWN(SSL_get_fd(con));
 668         ret=0;
 669 end:
 670         if (con != NULL) SSL_free(con);
 671         if (con2 != NULL) SSL_free(con2);
 672         if (ctx != NULL) SSL_CTX_free(ctx);
 673         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); Free(cbuf); }
 674         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); Free(sbuf); }
 675         if (bio_c_out != NULL)
 676                 {
 677                 BIO_free(bio_c_out);
 678                 bio_c_out=NULL;
 679                 }
 680         EXIT(ret);
 681         }
 682
 683
 684 static void print_stuff(BIO *bio, SSL *s, int full)
 685         {
 686         X509 *peer=NULL;
 687         char *p;
 688         static char *space="                ";
 689         char buf[BUFSIZ];
 690         STACK_OF(X509) *sk;
 691         STACK_OF(X509_NAME) *sk2;
 692         SSL_CIPHER *c;
 693         X509_NAME *xn;
 694         int j,i;
 695
 696         if (full)
 697                 {
 698                 int got_a_chain = 0;
 699
 700                 sk=SSL_get_peer_cert_chain(s);
 701                 if (sk != NULL)
 702                         {
 703                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
 704
 705                         BIO_printf(bio,"---\nCertificate chain\n");
 706                         for (i=0; i<sk_X509_num(sk); i++)
 707                                 {
 708                                 X509_NAME_oneline(X509_get_subject_name(
 709                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 710                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
 711                                 X509_NAME_oneline(X509_get_issuer_name(
 712                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 713                                 BIO_printf(bio,"   i:%s\n",buf);
 714                                 if (c_showcerts)
 715                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
 716                                 }
 717                         }
 718
 719                 BIO_printf(bio,"---\n");
 720                 peer=SSL_get_peer_certificate(s);
 721                 if (peer != NULL)
 722                         {
 723                         BIO_printf(bio,"Server certificate\n");
 724                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
 725                                 PEM_write_bio_X509(bio,peer);
 726                         X509_NAME_oneline(X509_get_subject_name(peer),
 727                                 buf,BUFSIZ);
 728                         BIO_printf(bio,"subject=%s\n",buf);
 729                         X509_NAME_oneline(X509_get_issuer_name(peer),
 730                                 buf,BUFSIZ);
 731                         BIO_printf(bio,"issuer=%s\n",buf);
 732                         }
 733                 else
 734                         BIO_printf(bio,"no peer certificate available\n");
 735
 736                 sk2=SSL_get_client_CA_list(s);
 737                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
 738                         {
 739                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
 740                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
 741                                 {
 742                                 xn=sk_X509_NAME_value(sk2,i);
 743                                 X509_NAME_oneline(xn,buf,sizeof(buf));
 744                                 BIO_write(bio,buf,strlen(buf));
 745                                 BIO_write(bio,"\n",1);
 746                                 }
 747                         }
 748                 else
 749                         {
 750                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
 751                         }
 752                 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
 753                 if (p != NULL)
 754                         {
 755                         /* This works only for SSL 2.  In later protocol
 756                          * versions, the client does not know what other
 757                          * ciphers (in addition to the one to be used
 758                          * in the current connection) the server supports. */
 759
 760                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
 761                         j=i=0;
 762                         while (*p)
 763                                 {
 764                                 if (*p == ':')
 765                                         {
 766                                         BIO_write(bio,space,15-j%25);
 767                                         i++;
 768                                         j=0;
 769                                         BIO_write(bio,((i%3)?" ":"\n"),1);
 770                                         }
 771                                 else
 772                                         {
 773                                         BIO_write(bio,p,1);
 774                                         j++;
 775                                         }
 776                                 p++;
 777                                 }
 778                         BIO_write(bio,"\n",1);
 779                         }
 780
 781                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
 782                         BIO_number_read(SSL_get_rbio(s)),
 783                         BIO_number_written(SSL_get_wbio(s)));
 784                 }
 785         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
 786         c=SSL_get_current_cipher(s);
 787         BIO_printf(bio,"%s, Cipher is %s\n",
 788                 SSL_CIPHER_get_version(c),
 789                 SSL_CIPHER_get_name(c));
 790         if (peer != NULL) {
 791                 EVP_PKEY *pktmp;
 792                 pktmp = X509_get_pubkey(peer);
 793                 BIO_printf(bio,"Server public key is %d bit\n",
 794                                                          EVP_PKEY_bits(pktmp));
 795                 EVP_PKEY_free(pktmp);
 796         }
 797         SSL_SESSION_print(bio,SSL_get_session(s));
 798         BIO_printf(bio,"---\n");
 799         if (peer != NULL)
 800                 X509_free(peer);
 801         }
 802