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 <assert.h>
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #ifdef NO_STDIO
  64 #define APPS_WIN16
  65 #endif
  66
  67 /* With IPv6, it looks like Digital has mixed up the proper order of
  68    recursive header file inclusion, resulting in the compiler complaining
  69    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
  70    is needed to have fileno() declared correctly...  So let's define u_int */
  71 #if defined(VMS) && defined(__DECC) && !defined(__U_INT)
  72 #define __U_INT
  73 typedef unsigned int u_int;
  74 #endif
  75
  76 #define USE_SOCKETS
  77 #include "apps.h"
  78 #include <openssl/x509.h>
  79 #include <openssl/ssl.h>
  80 #include <openssl/err.h>
  81 #include <openssl/pem.h>
  82 #include "s_apps.h"
  83
  84 #ifdef WINDOWS
  85 #include <conio.h>
  86 #endif
  87
  88
  89 #if (defined(VMS) && __VMS_VER < 70000000)
  90 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
  91 #undef FIONBIO
  92 #endif
  93
  94 #undef PROG
  95 #define PROG    s_client_main
  96
  97 /*#define SSL_HOST_NAME "www.netscape.com" */
  98 /*#define SSL_HOST_NAME "193.118.187.102" */
  99 #define SSL_HOST_NAME   "localhost"
 100
 101 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 102
 103 #undef BUFSIZZ
 104 #define BUFSIZZ 1024*8
 105
 106 extern int verify_depth;
 107 extern int verify_error;
 108
 109 #ifdef FIONBIO
 110 static int c_nbio=0;
 111 #endif
 112 static int c_Pause=0;
 113 static int c_debug=0;
 114 static int c_showcerts=0;
 115
 116 static void sc_usage(void);
 117 static void print_stuff(BIO *berr,SSL *con,int full);
 118 static BIO *bio_c_out=NULL;
 119 static int c_quiet=0;
 120 static int c_ign_eof=0;
 121
 122 static void sc_usage(void)
 123         {
 124         BIO_printf(bio_err,"usage: s_client args\n");
 125         BIO_printf(bio_err,"\n");
 126         BIO_printf(bio_err," -host host     - use -connect instead\n");
 127         BIO_printf(bio_err," -port port     - use -connect instead\n");
 128         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 129
 130         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 131         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 132         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
 133         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 134         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 135         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 136         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 137         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 138         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 139         BIO_printf(bio_err," -debug        - extra output\n");
 140         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 141         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 142 #ifdef FIONBIO
 143         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 144 #endif
 145         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 146         BIO_printf(bio_err," -quiet        - no s_client output\n");
 147         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 148         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 149         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 150         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 151         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 152         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 153         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 154         BIO_printf(bio_err,"                 command to see what is available\n");
 155         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 156
 157         }
 158
 159 int MAIN(int, char **);
 160
 161 int MAIN(int argc, char **argv)
 162         {
 163         int off=0;
 164         SSL *con=NULL,*con2=NULL;
 165         int s,k,width,state=0;
 166         char *cbuf=NULL,*sbuf=NULL;
 167         int cbuf_len,cbuf_off;
 168         int sbuf_len,sbuf_off;
 169         fd_set readfds,writefds;
 170         short port=PORT;
 171         int full_log=1;
 172         char *host=SSL_HOST_NAME;
 173         char *cert_file=NULL,*key_file=NULL;
 174         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 175         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 176         int crlf=0;
 177         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 178         SSL_CTX *ctx=NULL;
 179         int ret=1,in_init=1,i,nbio_test=0;
 180         int prexit = 0;
 181         SSL_METHOD *meth=NULL;
 182         BIO *sbio;
 183         char *inrand=NULL;
 184 #ifdef WINDOWS
 185         struct timeval tv;
 186 #endif
 187
 188 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 189         meth=SSLv23_client_method();
 190 #elif !defined(NO_SSL3)
 191         meth=SSLv3_client_method();
 192 #elif !defined(NO_SSL2)
 193         meth=SSLv2_client_method();
 194 #endif
 195
 196         apps_startup();
 197         c_Pause=0;
 198         c_quiet=0;
 199         c_ign_eof=0;
 200         c_debug=0;
 201         c_showcerts=0;
 202
 203         if (bio_err == NULL)
 204                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 205
 206         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 207                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 208                 {
 209                 BIO_printf(bio_err,"out of memory\n");
 210                 goto end;
 211                 }
 212
 213         verify_depth=0;
 214         verify_error=X509_V_OK;
 215 #ifdef FIONBIO
 216         c_nbio=0;
 217 #endif
 218
 219         argc--;
 220         argv++;
 221         while (argc >= 1)
 222                 {
 223                 if      (strcmp(*argv,"-host") == 0)
 224                         {
 225                         if (--argc < 1) goto bad;
 226                         host= *(++argv);
 227                         }
 228                 else if (strcmp(*argv,"-port") == 0)
 229                         {
 230                         if (--argc < 1) goto bad;
 231                         port=atoi(*(++argv));
 232                         if (port == 0) goto bad;
 233                         }
 234                 else if (strcmp(*argv,"-connect") == 0)
 235                         {
 236                         if (--argc < 1) goto bad;
 237                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 238                                 goto bad;
 239                         }
 240                 else if (strcmp(*argv,"-verify") == 0)
 241                         {
 242                         verify=SSL_VERIFY_PEER;
 243                         if (--argc < 1) goto bad;
 244                         verify_depth=atoi(*(++argv));
 245                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 246                         }
 247                 else if (strcmp(*argv,"-cert") == 0)
 248                         {
 249                         if (--argc < 1) goto bad;
 250                         cert_file= *(++argv);
 251                         }
 252                 else if (strcmp(*argv,"-prexit") == 0)
 253                         prexit=1;
 254                 else if (strcmp(*argv,"-crlf") == 0)
 255                         crlf=1;
 256                 else if (strcmp(*argv,"-quiet") == 0)
 257                         {
 258                         c_quiet=1;
 259                         c_ign_eof=1;
 260                         }
 261                 else if (strcmp(*argv,"-ign_eof") == 0)
 262                         c_ign_eof=1;
 263                 else if (strcmp(*argv,"-pause") == 0)
 264                         c_Pause=1;
 265                 else if (strcmp(*argv,"-debug") == 0)
 266                         c_debug=1;
 267                 else if (strcmp(*argv,"-showcerts") == 0)
 268                         c_showcerts=1;
 269                 else if (strcmp(*argv,"-nbio_test") == 0)
 270                         nbio_test=1;
 271                 else if (strcmp(*argv,"-state") == 0)
 272                         state=1;
 273 #ifndef NO_SSL2
 274                 else if (strcmp(*argv,"-ssl2") == 0)
 275                         meth=SSLv2_client_method();
 276 #endif
 277 #ifndef NO_SSL3
 278                 else if (strcmp(*argv,"-ssl3") == 0)
 279                         meth=SSLv3_client_method();
 280 #endif
 281 #ifndef NO_TLS1
 282                 else if (strcmp(*argv,"-tls1") == 0)
 283                         meth=TLSv1_client_method();
 284 #endif
 285                 else if (strcmp(*argv,"-bugs") == 0)
 286                         bugs=1;
 287                 else if (strcmp(*argv,"-key") == 0)
 288                         {
 289                         if (--argc < 1) goto bad;
 290                         key_file= *(++argv);
 291                         }
 292                 else if (strcmp(*argv,"-reconnect") == 0)
 293                         {
 294                         reconnect=5;
 295                         }
 296                 else if (strcmp(*argv,"-CApath") == 0)
 297                         {
 298                         if (--argc < 1) goto bad;
 299                         CApath= *(++argv);
 300                         }
 301                 else if (strcmp(*argv,"-CAfile") == 0)
 302                         {
 303                         if (--argc < 1) goto bad;
 304                         CAfile= *(++argv);
 305                         }
 306                 else if (strcmp(*argv,"-no_tls1") == 0)
 307                         off|=SSL_OP_NO_TLSv1;
 308                 else if (strcmp(*argv,"-no_ssl3") == 0)
 309                         off|=SSL_OP_NO_SSLv3;
 310                 else if (strcmp(*argv,"-no_ssl2") == 0)
 311                         off|=SSL_OP_NO_SSLv2;
 312                 else if (strcmp(*argv,"-cipher") == 0)
 313                         {
 314                         if (--argc < 1) goto bad;
 315                         cipher= *(++argv);
 316                         }
 317 #ifdef FIONBIO
 318                 else if (strcmp(*argv,"-nbio") == 0)
 319                         { c_nbio=1; }
 320 #endif
 321                 else if (strcmp(*argv,"-rand") == 0)
 322                         {
 323                         if (--argc < 1) goto bad;
 324                         inrand= *(++argv);
 325                         }
 326                 else
 327                         {
 328                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 329                         badop=1;
 330                         break;
 331                         }
 332                 argc--;
 333                 argv++;
 334                 }
 335         if (badop)
 336                 {
 337 bad:
 338                 sc_usage();
 339                 goto end;
 340                 }
 341
 342         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
 343                 && !RAND_status())
 344                 {
 345                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 346                 }
 347         if (inrand != NULL)
 348                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 349                         app_RAND_load_files(inrand));
 350
 351         if (bio_c_out == NULL)
 352                 {
 353                 if (c_quiet)
 354                         {
 355                         bio_c_out=BIO_new(BIO_s_null());
 356                         }
 357                 else
 358                         {
 359                         if (bio_c_out == NULL)
 360                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 361                         }
 362                 }
 363
 364         OpenSSL_add_ssl_algorithms();
 365         SSL_load_error_strings();
 366         ctx=SSL_CTX_new(meth);
 367         if (ctx == NULL)
 368                 {
 369                 ERR_print_errors(bio_err);
 370                 goto end;
 371                 }
 372
 373         if (bugs)
 374                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 375         else
 376                 SSL_CTX_set_options(ctx,off);
 377
 378         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 379         if (cipher != NULL)
 380                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
 381                 BIO_printf(bio_err,"error setting cipher list\n");
 382                 ERR_print_errors(bio_err);
 383                 goto end;
 384         }
 385 #if 0
 386         else
 387                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 388 #endif
 389
 390         SSL_CTX_set_verify(ctx,verify,verify_callback);
 391         if (!set_cert_stuff(ctx,cert_file,key_file))
 392                 goto end;
 393
 394         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 395                 (!SSL_CTX_set_default_verify_paths(ctx)))
 396                 {
 397                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
 398                 ERR_print_errors(bio_err);
 399                 /* goto end; */
 400                 }
 401
 402
 403         con=SSL_new(ctx);
 404 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 405
 406 re_start:
 407
 408         if (init_client(&s,host,port) == 0)
 409                 {
 410                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 411                 SHUTDOWN(s);
 412                 goto end;
 413                 }
 414         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 415
 416 #ifdef FIONBIO
 417         if (c_nbio)
 418                 {
 419                 unsigned long l=1;
 420                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 421                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 422                         {
 423                         ERR_print_errors(bio_err);
 424                         goto end;
 425                         }
 426                 }
 427 #endif
 428         if (c_Pause & 0x01) con->debug=1;
 429         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 430
 431         if (nbio_test)
 432                 {
 433                 BIO *test;
 434
 435                 test=BIO_new(BIO_f_nbio_test());
 436                 sbio=BIO_push(test,sbio);
 437                 }
 438
 439         if (c_debug)
 440                 {
 441                 con->debug=1;
 442                 BIO_set_callback(sbio,bio_dump_cb);
 443                 BIO_set_callback_arg(sbio,bio_c_out);
 444                 }
 445
 446         SSL_set_bio(con,sbio,sbio);
 447         SSL_set_connect_state(con);
 448
 449         /* ok, lets connect */
 450         width=SSL_get_fd(con)+1;
 451
 452         read_tty=1;
 453         write_tty=0;
 454         tty_on=0;
 455         read_ssl=1;
 456         write_ssl=1;
 457
 458         cbuf_len=0;
 459         cbuf_off=0;
 460         sbuf_len=0;
 461         sbuf_off=0;
 462
 463         for (;;)
 464                 {
 465                 FD_ZERO(&readfds);
 466                 FD_ZERO(&writefds);
 467
 468                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
 469                         {
 470                         in_init=1;
 471                         tty_on=0;
 472                         }
 473                 else
 474                         {
 475                         tty_on=1;
 476                         if (in_init)
 477                                 {
 478                                 in_init=0;
 479                                 print_stuff(bio_c_out,con,full_log);
 480                                 if (full_log > 0) full_log--;
 481
 482                                 if (reconnect)
 483                                         {
 484                                         reconnect--;
 485                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
 486                                         SSL_shutdown(con);
 487                                         SSL_set_connect_state(con);
 488                                         SHUTDOWN(SSL_get_fd(con));
 489                                         goto re_start;
 490                                         }
 491                                 }
 492                         }
 493
 494                 ssl_pending = read_ssl && SSL_pending(con);
 495
 496                 if (!ssl_pending)
 497                         {
 498 #ifndef WINDOWS
 499                         if (tty_on)
 500                                 {
 501                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
 502                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
 503                                 }
 504                         if (read_ssl)
 505                                 FD_SET(SSL_get_fd(con),&readfds);
 506                         if (write_ssl)
 507                                 FD_SET(SSL_get_fd(con),&writefds);
 508 #else
 509                         if(!tty_on || !write_tty) {
 510                                 if (read_ssl)
 511                                         FD_SET(SSL_get_fd(con),&readfds);
 512                                 if (write_ssl)
 513                                         FD_SET(SSL_get_fd(con),&writefds);
 514                         }
 515 #endif
 516 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
 517                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 518
 519                         /* Note: under VMS with SOCKETSHR the second parameter
 520                          * is currently of type (int *) whereas under other
 521                          * systems it is (void *) if you don't have a cast it
 522                          * will choke the compiler: if you do have a cast then
 523                          * you can either go for (int *) or (void *).
 524                          */
 525 #ifdef WINDOWS
 526                         /* Under Windows we make the assumption that we can
 527                          * always write to the tty: therefore if we need to
 528                          * write to the tty we just fall through. Otherwise
 529                          * we timeout the select every second and see if there
 530                          * are any keypresses. Note: this is a hack, in a proper
 531                          * Windows application we wouldn't do this.
 532                          */
 533                         i=0;
 534                         if(!write_tty) {
 535                                 if(read_tty) {
 536                                         tv.tv_sec = 1;
 537                                         tv.tv_usec = 0;
 538                                         i=select(width,(void *)&readfds,(void *)&writefds,
 539                                                  NULL,&tv);
 540                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
 541                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
 542                                          NULL,NULL);
 543                         }
 544 #else
 545                         i=select(width,(void *)&readfds,(void *)&writefds,
 546                                  NULL,NULL);
 547 #endif
 548                         if ( i < 0)
 549                                 {
 550                                 BIO_printf(bio_err,"bad select %d\n",
 551                                 get_last_socket_error());
 552                                 goto shut;
 553                                 /* goto end; */
 554                                 }
 555                         }
 556
 557                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
 558                         {
 559                         k=SSL_write(con,&(cbuf[cbuf_off]),
 560                                 (unsigned int)cbuf_len);
 561                         switch (SSL_get_error(con,k))
 562                                 {
 563                         case SSL_ERROR_NONE:
 564                                 cbuf_off+=k;
 565                                 cbuf_len-=k;
 566                                 if (k <= 0) goto end;
 567                                 /* we have done a  write(con,NULL,0); */
 568                                 if (cbuf_len <= 0)
 569                                         {
 570                                         read_tty=1;
 571                                         write_ssl=0;
 572                                         }
 573                                 else /* if (cbuf_len > 0) */
 574                                         {
 575                                         read_tty=0;
 576                                         write_ssl=1;
 577                                         }
 578                                 break;
 579                         case SSL_ERROR_WANT_WRITE:
 580                                 BIO_printf(bio_c_out,"write W BLOCK\n");
 581                                 write_ssl=1;
 582                                 read_tty=0;
 583                                 break;
 584                         case SSL_ERROR_WANT_READ:
 585                                 BIO_printf(bio_c_out,"write R BLOCK\n");
 586                                 write_tty=0;
 587                                 read_ssl=1;
 588                                 write_ssl=0;
 589                                 break;
 590                         case SSL_ERROR_WANT_X509_LOOKUP:
 591                                 BIO_printf(bio_c_out,"write X BLOCK\n");
 592                                 break;
 593                         case SSL_ERROR_ZERO_RETURN:
 594                                 if (cbuf_len != 0)
 595                                         {
 596                                         BIO_printf(bio_c_out,"shutdown\n");
 597                                         goto shut;
 598                                         }
 599                                 else
 600                                         {
 601                                         read_tty=1;
 602                                         write_ssl=0;
 603                                         break;
 604                                         }
 605
 606                         case SSL_ERROR_SYSCALL:
 607                                 if ((k != 0) || (cbuf_len != 0))
 608                                         {
 609                                         BIO_printf(bio_err,"write:errno=%d\n",
 610                                                 get_last_socket_error());
 611                                         goto shut;
 612                                         }
 613                                 else
 614                                         {
 615                                         read_tty=1;
 616                                         write_ssl=0;
 617                                         }
 618                                 break;
 619                         case SSL_ERROR_SSL:
 620                                 ERR_print_errors(bio_err);
 621                                 goto shut;
 622                                 }
 623                         }
 624 #ifdef WINDOWS
 625                 /* Assume Windows can always write */
 626                 else if (!ssl_pending && write_tty)
 627 #else
 628                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
 629 #endif
 630                         {
 631 #ifdef CHARSET_EBCDIC
 632                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
 633 #endif
 634                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
 635
 636                         if (i <= 0)
 637                                 {
 638                                 BIO_printf(bio_c_out,"DONE\n");
 639                                 goto shut;
 640                                 /* goto end; */
 641                                 }
 642
 643                         sbuf_len-=i;;
 644                         sbuf_off+=i;
 645                         if (sbuf_len <= 0)
 646                                 {
 647                                 read_ssl=1;
 648                                 write_tty=0;
 649                                 }
 650                         }
 651                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
 652                         {
 653 #ifdef RENEG
 654 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
 655 #endif
 656 #if 1
 657                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
 658 #else
 659 /* Demo for pending and peek :-) */
 660                         k=SSL_read(con,sbuf,16);
 661 { char zbuf[10240];
 662 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
 663 }
 664 #endif
 665
 666                         switch (SSL_get_error(con,k))
 667                                 {
 668                         case SSL_ERROR_NONE:
 669                                 if (k <= 0)
 670                                         goto end;
 671                                 sbuf_off=0;
 672                                 sbuf_len=k;
 673
 674                                 read_ssl=0;
 675                                 write_tty=1;
 676                                 break;
 677                         case SSL_ERROR_WANT_WRITE:
 678                                 BIO_printf(bio_c_out,"read W BLOCK\n");
 679                                 write_ssl=1;
 680                                 read_tty=0;
 681                                 break;
 682                         case SSL_ERROR_WANT_READ:
 683                                 BIO_printf(bio_c_out,"read R BLOCK\n");
 684                                 write_tty=0;
 685                                 read_ssl=1;
 686                                 if ((read_tty == 0) && (write_ssl == 0))
 687                                         write_ssl=1;
 688                                 break;
 689                         case SSL_ERROR_WANT_X509_LOOKUP:
 690                                 BIO_printf(bio_c_out,"read X BLOCK\n");
 691                                 break;
 692                         case SSL_ERROR_SYSCALL:
 693                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
 694                                 goto shut;
 695                         case SSL_ERROR_ZERO_RETURN:
 696                                 BIO_printf(bio_c_out,"closed\n");
 697                                 goto shut;
 698                         case SSL_ERROR_SSL:
 699                                 ERR_print_errors(bio_err);
 700                                 goto shut;
 701                                 /* break; */
 702                                 }
 703                         }
 704
 705 #ifdef WINDOWS
 706                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
 707 #else
 708                 else if (FD_ISSET(fileno(stdin),&readfds))
 709 #endif
 710                         {
 711                         if (crlf)
 712                                 {
 713                                 int j, lf_num;
 714
 715                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
 716                                 lf_num = 0;
 717                                 /* both loops are skipped when i <= 0 */
 718                                 for (j = 0; j < i; j++)
 719                                         if (cbuf[j] == '\n')
 720                                                 lf_num++;
 721                                 for (j = i-1; j >= 0; j--)
 722                                         {
 723                                         cbuf[j+lf_num] = cbuf[j];
 724                                         if (cbuf[j] == '\n')
 725                                                 {
 726                                                 lf_num--;
 727                                                 i++;
 728                                                 cbuf[j+lf_num] = '\r';
 729                                                 }
 730                                         }
 731                                 assert(lf_num == 0);
 732                                 }
 733                         else
 734                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
 735
 736                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
 737                                 {
 738                                 BIO_printf(bio_err,"DONE\n");
 739                                 goto shut;
 740                                 }
 741
 742                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
 743                                 {
 744                                 BIO_printf(bio_err,"RENEGOTIATING\n");
 745                                 SSL_renegotiate(con);
 746                                 cbuf_len=0;
 747                                 }
 748                         else
 749                                 {
 750                                 cbuf_len=i;
 751                                 cbuf_off=0;
 752 #ifdef CHARSET_EBCDIC
 753                                 ebcdic2ascii(cbuf, cbuf, i);
 754 #endif
 755                                 }
 756
 757                         write_ssl=1;
 758                         read_tty=0;
 759                         }
 760                 }
 761 shut:
 762         SSL_shutdown(con);
 763         SHUTDOWN(SSL_get_fd(con));
 764         ret=0;
 765 end:
 766         if(prexit) print_stuff(bio_c_out,con,1);
 767         if (con != NULL) SSL_free(con);
 768         if (con2 != NULL) SSL_free(con2);
 769         if (ctx != NULL) SSL_CTX_free(ctx);
 770         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); OPENSSL_free(cbuf); }
 771         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); OPENSSL_free(sbuf); }
 772         if (bio_c_out != NULL)
 773                 {
 774                 BIO_free(bio_c_out);
 775                 bio_c_out=NULL;
 776                 }
 777         EXIT(ret);
 778         }
 779
 780
 781 static void print_stuff(BIO *bio, SSL *s, int full)
 782         {
 783         X509 *peer=NULL;
 784         char *p;
 785         static char *space="                ";
 786         char buf[BUFSIZ];
 787         STACK_OF(X509) *sk;
 788         STACK_OF(X509_NAME) *sk2;
 789         SSL_CIPHER *c;
 790         X509_NAME *xn;
 791         int j,i;
 792
 793         if (full)
 794                 {
 795                 int got_a_chain = 0;
 796
 797                 sk=SSL_get_peer_cert_chain(s);
 798                 if (sk != NULL)
 799                         {
 800                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
 801
 802                         BIO_printf(bio,"---\nCertificate chain\n");
 803                         for (i=0; i<sk_X509_num(sk); i++)
 804                                 {
 805                                 X509_NAME_oneline(X509_get_subject_name(
 806                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 807                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
 808                                 X509_NAME_oneline(X509_get_issuer_name(
 809                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 810                                 BIO_printf(bio,"   i:%s\n",buf);
 811                                 if (c_showcerts)
 812                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
 813                                 }
 814                         }
 815
 816                 BIO_printf(bio,"---\n");
 817                 peer=SSL_get_peer_certificate(s);
 818                 if (peer != NULL)
 819                         {
 820                         BIO_printf(bio,"Server certificate\n");
 821                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
 822                                 PEM_write_bio_X509(bio,peer);
 823                         X509_NAME_oneline(X509_get_subject_name(peer),
 824                                 buf,BUFSIZ);
 825                         BIO_printf(bio,"subject=%s\n",buf);
 826                         X509_NAME_oneline(X509_get_issuer_name(peer),
 827                                 buf,BUFSIZ);
 828                         BIO_printf(bio,"issuer=%s\n",buf);
 829                         }
 830                 else
 831                         BIO_printf(bio,"no peer certificate available\n");
 832
 833                 sk2=SSL_get_client_CA_list(s);
 834                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
 835                         {
 836                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
 837                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
 838                                 {
 839                                 xn=sk_X509_NAME_value(sk2,i);
 840                                 X509_NAME_oneline(xn,buf,sizeof(buf));
 841                                 BIO_write(bio,buf,strlen(buf));
 842                                 BIO_write(bio,"\n",1);
 843                                 }
 844                         }
 845                 else
 846                         {
 847                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
 848                         }
 849                 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
 850                 if (p != NULL)
 851                         {
 852                         /* This works only for SSL 2.  In later protocol
 853                          * versions, the client does not know what other
 854                          * ciphers (in addition to the one to be used
 855                          * in the current connection) the server supports. */
 856
 857                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
 858                         j=i=0;
 859                         while (*p)
 860                                 {
 861                                 if (*p == ':')
 862                                         {
 863                                         BIO_write(bio,space,15-j%25);
 864                                         i++;
 865                                         j=0;
 866                                         BIO_write(bio,((i%3)?" ":"\n"),1);
 867                                         }
 868                                 else
 869                                         {
 870                                         BIO_write(bio,p,1);
 871                                         j++;
 872                                         }
 873                                 p++;
 874                                 }
 875                         BIO_write(bio,"\n",1);
 876                         }
 877
 878                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
 879                         BIO_number_read(SSL_get_rbio(s)),
 880                         BIO_number_written(SSL_get_wbio(s)));
 881                 }
 882         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
 883         c=SSL_get_current_cipher(s);
 884         BIO_printf(bio,"%s, Cipher is %s\n",
 885                 SSL_CIPHER_get_version(c),
 886                 SSL_CIPHER_get_name(c));
 887         if (peer != NULL) {
 888                 EVP_PKEY *pktmp;
 889                 pktmp = X509_get_pubkey(peer);
 890                 BIO_printf(bio,"Server public key is %d bit\n",
 891                                                          EVP_PKEY_bits(pktmp));
 892                 EVP_PKEY_free(pktmp);
 893         }
 894         SSL_SESSION_print(bio,SSL_get_session(s));
 895         BIO_printf(bio,"---\n");
 896         if (peer != NULL)
 897                 X509_free(peer);
 898         }
 899