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 OPENSSL_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(OPENSSL_SYS_VMS_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 <openssl/engine.h>
  83 #include "s_apps.h"
  84
  85 #ifdef OPENSSL_SYS_WINDOWS
  86 #include <conio.h>
  87 #endif
  88
  89
  90 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
  91 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
  92 #undef FIONBIO
  93 #endif
  94
  95 #undef PROG
  96 #define PROG    s_client_main
  97
  98 /*#define SSL_HOST_NAME "www.netscape.com" */
  99 /*#define SSL_HOST_NAME "193.118.187.102" */
 100 #define SSL_HOST_NAME   "localhost"
 101
 102 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 103
 104 #undef BUFSIZZ
 105 #define BUFSIZZ 1024*8
 106
 107 extern int verify_depth;
 108 extern int verify_error;
 109
 110 #ifdef FIONBIO
 111 static int c_nbio=0;
 112 #endif
 113 static int c_Pause=0;
 114 static int c_debug=0;
 115 static int c_showcerts=0;
 116
 117 static void sc_usage(void);
 118 static void print_stuff(BIO *berr,SSL *con,int full);
 119 static BIO *bio_c_out=NULL;
 120 static int c_quiet=0;
 121 static int c_ign_eof=0;
 122
 123 static void sc_usage(void)
 124         {
 125         BIO_printf(bio_err,"usage: s_client args\n");
 126         BIO_printf(bio_err,"\n");
 127         BIO_printf(bio_err," -host host     - use -connect instead\n");
 128         BIO_printf(bio_err," -port port     - use -connect instead\n");
 129         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 130
 131         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 132         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 133         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
 134         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 135         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 136         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 137         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 138         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 139         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 140         BIO_printf(bio_err," -debug        - extra output\n");
 141         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 142         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 143 #ifdef FIONBIO
 144         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 145 #endif
 146         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 147         BIO_printf(bio_err," -quiet        - no s_client output\n");
 148         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 149         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 150         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 151         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 152         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 153         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 154         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 155         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 156         BIO_printf(bio_err,"                 command to see what is available\n");
 157         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 158         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 159
 160         }
 161
 162 int MAIN(int, char **);
 163
 164 int MAIN(int argc, char **argv)
 165         {
 166         int off=0;
 167         SSL *con=NULL,*con2=NULL;
 168         int s,k,width,state=0;
 169         char *cbuf=NULL,*sbuf=NULL;
 170         int cbuf_len,cbuf_off;
 171         int sbuf_len,sbuf_off;
 172         fd_set readfds,writefds;
 173         short port=PORT;
 174         int full_log=1;
 175         char *host=SSL_HOST_NAME;
 176         char *cert_file=NULL,*key_file=NULL;
 177         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 178         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 179         int crlf=0;
 180         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 181         SSL_CTX *ctx=NULL;
 182         int ret=1,in_init=1,i,nbio_test=0;
 183         int prexit = 0;
 184         SSL_METHOD *meth=NULL;
 185         BIO *sbio;
 186         char *inrand=NULL;
 187         char *engine_id=NULL;
 188         ENGINE *e=NULL;
 189 #ifdef OPENSSL_SYS_WINDOWS
 190         struct timeval tv;
 191 #endif
 192
 193 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 194         meth=SSLv23_client_method();
 195 #elif !defined(OPENSSL_NO_SSL3)
 196         meth=SSLv3_client_method();
 197 #elif !defined(OPENSSL_NO_SSL2)
 198         meth=SSLv2_client_method();
 199 #endif
 200
 201         apps_startup();
 202         c_Pause=0;
 203         c_quiet=0;
 204         c_ign_eof=0;
 205         c_debug=0;
 206         c_showcerts=0;
 207
 208         if (bio_err == NULL)
 209                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 210
 211         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 212                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 213                 {
 214                 BIO_printf(bio_err,"out of memory\n");
 215                 goto end;
 216                 }
 217
 218         verify_depth=0;
 219         verify_error=X509_V_OK;
 220 #ifdef FIONBIO
 221         c_nbio=0;
 222 #endif
 223
 224         argc--;
 225         argv++;
 226         while (argc >= 1)
 227                 {
 228                 if      (strcmp(*argv,"-host") == 0)
 229                         {
 230                         if (--argc < 1) goto bad;
 231                         host= *(++argv);
 232                         }
 233                 else if (strcmp(*argv,"-port") == 0)
 234                         {
 235                         if (--argc < 1) goto bad;
 236                         port=atoi(*(++argv));
 237                         if (port == 0) goto bad;
 238                         }
 239                 else if (strcmp(*argv,"-connect") == 0)
 240                         {
 241                         if (--argc < 1) goto bad;
 242                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 243                                 goto bad;
 244                         }
 245                 else if (strcmp(*argv,"-verify") == 0)
 246                         {
 247                         verify=SSL_VERIFY_PEER;
 248                         if (--argc < 1) goto bad;
 249                         verify_depth=atoi(*(++argv));
 250                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 251                         }
 252                 else if (strcmp(*argv,"-cert") == 0)
 253                         {
 254                         if (--argc < 1) goto bad;
 255                         cert_file= *(++argv);
 256                         }
 257                 else if (strcmp(*argv,"-prexit") == 0)
 258                         prexit=1;
 259                 else if (strcmp(*argv,"-crlf") == 0)
 260                         crlf=1;
 261                 else if (strcmp(*argv,"-quiet") == 0)
 262                         {
 263                         c_quiet=1;
 264                         c_ign_eof=1;
 265                         }
 266                 else if (strcmp(*argv,"-ign_eof") == 0)
 267                         c_ign_eof=1;
 268                 else if (strcmp(*argv,"-pause") == 0)
 269                         c_Pause=1;
 270                 else if (strcmp(*argv,"-debug") == 0)
 271                         c_debug=1;
 272                 else if (strcmp(*argv,"-showcerts") == 0)
 273                         c_showcerts=1;
 274                 else if (strcmp(*argv,"-nbio_test") == 0)
 275                         nbio_test=1;
 276                 else if (strcmp(*argv,"-state") == 0)
 277                         state=1;
 278 #ifndef OPENSSL_NO_SSL2
 279                 else if (strcmp(*argv,"-ssl2") == 0)
 280                         meth=SSLv2_client_method();
 281 #endif
 282 #ifndef OPENSSL_NO_SSL3
 283                 else if (strcmp(*argv,"-ssl3") == 0)
 284                         meth=SSLv3_client_method();
 285 #endif
 286 #ifndef OPENSSL_NO_TLS1
 287                 else if (strcmp(*argv,"-tls1") == 0)
 288                         meth=TLSv1_client_method();
 289 #endif
 290                 else if (strcmp(*argv,"-bugs") == 0)
 291                         bugs=1;
 292                 else if (strcmp(*argv,"-key") == 0)
 293                         {
 294                         if (--argc < 1) goto bad;
 295                         key_file= *(++argv);
 296                         }
 297                 else if (strcmp(*argv,"-reconnect") == 0)
 298                         {
 299                         reconnect=5;
 300                         }
 301                 else if (strcmp(*argv,"-CApath") == 0)
 302                         {
 303                         if (--argc < 1) goto bad;
 304                         CApath= *(++argv);
 305                         }
 306                 else if (strcmp(*argv,"-CAfile") == 0)
 307                         {
 308                         if (--argc < 1) goto bad;
 309                         CAfile= *(++argv);
 310                         }
 311                 else if (strcmp(*argv,"-no_tls1") == 0)
 312                         off|=SSL_OP_NO_TLSv1;
 313                 else if (strcmp(*argv,"-no_ssl3") == 0)
 314                         off|=SSL_OP_NO_SSLv3;
 315                 else if (strcmp(*argv,"-no_ssl2") == 0)
 316                         off|=SSL_OP_NO_SSLv2;
 317                 else if (strcmp(*argv,"-serverpref") == 0)
 318                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 319                 else if (strcmp(*argv,"-cipher") == 0)
 320                         {
 321                         if (--argc < 1) goto bad;
 322                         cipher= *(++argv);
 323                         }
 324 #ifdef FIONBIO
 325                 else if (strcmp(*argv,"-nbio") == 0)
 326                         { c_nbio=1; }
 327 #endif
 328                 else if (strcmp(*argv,"-engine") == 0)
 329                         {
 330                         if (--argc < 1) goto bad;
 331                         engine_id = *(++argv);
 332                         }
 333                 else if (strcmp(*argv,"-rand") == 0)
 334                         {
 335                         if (--argc < 1) goto bad;
 336                         inrand= *(++argv);
 337                         }
 338                 else
 339                         {
 340                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 341                         badop=1;
 342                         break;
 343                         }
 344                 argc--;
 345                 argv++;
 346                 }
 347         if (badop)
 348                 {
 349 bad:
 350                 sc_usage();
 351                 goto end;
 352                 }
 353
 354         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
 355                 && !RAND_status())
 356                 {
 357                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 358                 }
 359         if (inrand != NULL)
 360                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 361                         app_RAND_load_files(inrand));
 362
 363         if (bio_c_out == NULL)
 364                 {
 365                 if (c_quiet)
 366                         {
 367                         bio_c_out=BIO_new(BIO_s_null());
 368                         }
 369                 else
 370                         {
 371                         if (bio_c_out == NULL)
 372                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 373                         }
 374                 }
 375
 376         OpenSSL_add_ssl_algorithms();
 377         SSL_load_error_strings();
 378
 379         if (engine_id != NULL)
 380                 {
 381                 if((e = ENGINE_by_id(engine_id)) == NULL)
 382                         {
 383                         BIO_printf(bio_err,"invalid engine\n");
 384                         ERR_print_errors(bio_err);
 385                         goto end;
 386                         }
 387                 if (c_debug)
 388                         {
 389                         ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM,
 390                                 0, bio_err, 0);
 391                         }
 392                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
 393                         {
 394                         BIO_printf(bio_err,"can't use that engine\n");
 395                         ERR_print_errors(bio_err);
 396                         goto end;
 397                         }
 398                 BIO_printf(bio_err,"engine \"%s\" set.\n", engine_id);
 399                 ENGINE_free(e);
 400                 }
 401
 402         ctx=SSL_CTX_new(meth);
 403         if (ctx == NULL)
 404                 {
 405                 ERR_print_errors(bio_err);
 406                 goto end;
 407                 }
 408
 409         if (bugs)
 410                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 411         else
 412                 SSL_CTX_set_options(ctx,off);
 413
 414         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 415         if (cipher != NULL)
 416                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
 417                 BIO_printf(bio_err,"error setting cipher list\n");
 418                 ERR_print_errors(bio_err);
 419                 goto end;
 420         }
 421 #if 0
 422         else
 423                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 424 #endif
 425
 426         SSL_CTX_set_verify(ctx,verify,verify_callback);
 427         if (!set_cert_stuff(ctx,cert_file,key_file))
 428                 goto end;
 429
 430         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 431                 (!SSL_CTX_set_default_verify_paths(ctx)))
 432                 {
 433                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
 434                 ERR_print_errors(bio_err);
 435                 /* goto end; */
 436                 }
 437
 438
 439         con=SSL_new(ctx);
 440 #ifndef OPENSSL_NO_KRB5
 441         if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
 442                 {
 443                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
 444                 }
 445 #endif  /* OPENSSL_NO_KRB5  */
 446 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 447
 448 re_start:
 449
 450         if (init_client(&s,host,port) == 0)
 451                 {
 452                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 453                 SHUTDOWN(s);
 454                 goto end;
 455                 }
 456         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 457
 458 #ifdef FIONBIO
 459         if (c_nbio)
 460                 {
 461                 unsigned long l=1;
 462                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 463                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 464                         {
 465                         ERR_print_errors(bio_err);
 466                         goto end;
 467                         }
 468                 }
 469 #endif
 470         if (c_Pause & 0x01) con->debug=1;
 471         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 472
 473         if (nbio_test)
 474                 {
 475                 BIO *test;
 476
 477                 test=BIO_new(BIO_f_nbio_test());
 478                 sbio=BIO_push(test,sbio);
 479                 }
 480
 481         if (c_debug)
 482                 {
 483                 con->debug=1;
 484                 BIO_set_callback(sbio,bio_dump_cb);
 485                 BIO_set_callback_arg(sbio,bio_c_out);
 486                 }
 487
 488         SSL_set_bio(con,sbio,sbio);
 489         SSL_set_connect_state(con);
 490
 491         /* ok, lets connect */
 492         width=SSL_get_fd(con)+1;
 493
 494         read_tty=1;
 495         write_tty=0;
 496         tty_on=0;
 497         read_ssl=1;
 498         write_ssl=1;
 499
 500         cbuf_len=0;
 501         cbuf_off=0;
 502         sbuf_len=0;
 503         sbuf_off=0;
 504
 505         for (;;)
 506                 {
 507                 FD_ZERO(&readfds);
 508                 FD_ZERO(&writefds);
 509
 510                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
 511                         {
 512                         in_init=1;
 513                         tty_on=0;
 514                         }
 515                 else
 516                         {
 517                         tty_on=1;
 518                         if (in_init)
 519                                 {
 520                                 in_init=0;
 521                                 print_stuff(bio_c_out,con,full_log);
 522                                 if (full_log > 0) full_log--;
 523
 524                                 if (reconnect)
 525                                         {
 526                                         reconnect--;
 527                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
 528                                         SSL_shutdown(con);
 529                                         SSL_set_connect_state(con);
 530                                         SHUTDOWN(SSL_get_fd(con));
 531                                         goto re_start;
 532                                         }
 533                                 }
 534                         }
 535
 536                 ssl_pending = read_ssl && SSL_pending(con);
 537
 538                 if (!ssl_pending)
 539                         {
 540 #ifndef OPENSSL_SYS_WINDOWS
 541                         if (tty_on)
 542                                 {
 543                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
 544                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
 545                                 }
 546                         if (read_ssl)
 547                                 FD_SET(SSL_get_fd(con),&readfds);
 548                         if (write_ssl)
 549                                 FD_SET(SSL_get_fd(con),&writefds);
 550 #else
 551                         if(!tty_on || !write_tty) {
 552                                 if (read_ssl)
 553                                         FD_SET(SSL_get_fd(con),&readfds);
 554                                 if (write_ssl)
 555                                         FD_SET(SSL_get_fd(con),&writefds);
 556                         }
 557 #endif
 558 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
 559                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 560
 561                         /* Note: under VMS with SOCKETSHR the second parameter
 562                          * is currently of type (int *) whereas under other
 563                          * systems it is (void *) if you don't have a cast it
 564                          * will choke the compiler: if you do have a cast then
 565                          * you can either go for (int *) or (void *).
 566                          */
 567 #ifdef OPENSSL_SYS_WINDOWS
 568                         /* Under Windows we make the assumption that we can
 569                          * always write to the tty: therefore if we need to
 570                          * write to the tty we just fall through. Otherwise
 571                          * we timeout the select every second and see if there
 572                          * are any keypresses. Note: this is a hack, in a proper
 573                          * Windows application we wouldn't do this.
 574                          */
 575                         i=0;
 576                         if(!write_tty) {
 577                                 if(read_tty) {
 578                                         tv.tv_sec = 1;
 579                                         tv.tv_usec = 0;
 580                                         i=select(width,(void *)&readfds,(void *)&writefds,
 581                                                  NULL,&tv);
 582                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
 583                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
 584                                          NULL,NULL);
 585                         }
 586 #else
 587                         i=select(width,(void *)&readfds,(void *)&writefds,
 588                                  NULL,NULL);
 589 #endif
 590                         if ( i < 0)
 591                                 {
 592                                 BIO_printf(bio_err,"bad select %d\n",
 593                                 get_last_socket_error());
 594                                 goto shut;
 595                                 /* goto end; */
 596                                 }
 597                         }
 598
 599                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
 600                         {
 601                         k=SSL_write(con,&(cbuf[cbuf_off]),
 602                                 (unsigned int)cbuf_len);
 603                         switch (SSL_get_error(con,k))
 604                                 {
 605                         case SSL_ERROR_NONE:
 606                                 cbuf_off+=k;
 607                                 cbuf_len-=k;
 608                                 if (k <= 0) goto end;
 609                                 /* we have done a  write(con,NULL,0); */
 610                                 if (cbuf_len <= 0)
 611                                         {
 612                                         read_tty=1;
 613                                         write_ssl=0;
 614                                         }
 615                                 else /* if (cbuf_len > 0) */
 616                                         {
 617                                         read_tty=0;
 618                                         write_ssl=1;
 619                                         }
 620                                 break;
 621                         case SSL_ERROR_WANT_WRITE:
 622                                 BIO_printf(bio_c_out,"write W BLOCK\n");
 623                                 write_ssl=1;
 624                                 read_tty=0;
 625                                 break;
 626                         case SSL_ERROR_WANT_READ:
 627                                 BIO_printf(bio_c_out,"write R BLOCK\n");
 628                                 write_tty=0;
 629                                 read_ssl=1;
 630                                 write_ssl=0;
 631                                 break;
 632                         case SSL_ERROR_WANT_X509_LOOKUP:
 633                                 BIO_printf(bio_c_out,"write X BLOCK\n");
 634                                 break;
 635                         case SSL_ERROR_ZERO_RETURN:
 636                                 if (cbuf_len != 0)
 637                                         {
 638                                         BIO_printf(bio_c_out,"shutdown\n");
 639                                         goto shut;
 640                                         }
 641                                 else
 642                                         {
 643                                         read_tty=1;
 644                                         write_ssl=0;
 645                                         break;
 646                                         }
 647
 648                         case SSL_ERROR_SYSCALL:
 649                                 if ((k != 0) || (cbuf_len != 0))
 650                                         {
 651                                         BIO_printf(bio_err,"write:errno=%d\n",
 652                                                 get_last_socket_error());
 653                                         goto shut;
 654                                         }
 655                                 else
 656                                         {
 657                                         read_tty=1;
 658                                         write_ssl=0;
 659                                         }
 660                                 break;
 661                         case SSL_ERROR_SSL:
 662                                 ERR_print_errors(bio_err);
 663                                 goto shut;
 664                                 }
 665                         }
 666 #ifdef OPENSSL_SYS_WINDOWS
 667                 /* Assume Windows can always write */
 668                 else if (!ssl_pending && write_tty)
 669 #else
 670                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
 671 #endif
 672                         {
 673 #ifdef CHARSET_EBCDIC
 674                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
 675 #endif
 676                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
 677
 678                         if (i <= 0)
 679                                 {
 680                                 BIO_printf(bio_c_out,"DONE\n");
 681                                 goto shut;
 682                                 /* goto end; */
 683                                 }
 684
 685                         sbuf_len-=i;;
 686                         sbuf_off+=i;
 687                         if (sbuf_len <= 0)
 688                                 {
 689                                 read_ssl=1;
 690                                 write_tty=0;
 691                                 }
 692                         }
 693                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
 694                         {
 695 #ifdef RENEG
 696 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
 697 #endif
 698 #if 1
 699                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
 700 #else
 701 /* Demo for pending and peek :-) */
 702                         k=SSL_read(con,sbuf,16);
 703 { char zbuf[10240];
 704 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
 705 }
 706 #endif
 707
 708                         switch (SSL_get_error(con,k))
 709                                 {
 710                         case SSL_ERROR_NONE:
 711                                 if (k <= 0)
 712                                         goto end;
 713                                 sbuf_off=0;
 714                                 sbuf_len=k;
 715
 716                                 read_ssl=0;
 717                                 write_tty=1;
 718                                 break;
 719                         case SSL_ERROR_WANT_WRITE:
 720                                 BIO_printf(bio_c_out,"read W BLOCK\n");
 721                                 write_ssl=1;
 722                                 read_tty=0;
 723                                 break;
 724                         case SSL_ERROR_WANT_READ:
 725                                 BIO_printf(bio_c_out,"read R BLOCK\n");
 726                                 write_tty=0;
 727                                 read_ssl=1;
 728                                 if ((read_tty == 0) && (write_ssl == 0))
 729                                         write_ssl=1;
 730                                 break;
 731                         case SSL_ERROR_WANT_X509_LOOKUP:
 732                                 BIO_printf(bio_c_out,"read X BLOCK\n");
 733                                 break;
 734                         case SSL_ERROR_SYSCALL:
 735                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
 736                                 goto shut;
 737                         case SSL_ERROR_ZERO_RETURN:
 738                                 BIO_printf(bio_c_out,"closed\n");
 739                                 goto shut;
 740                         case SSL_ERROR_SSL:
 741                                 ERR_print_errors(bio_err);
 742                                 goto shut;
 743                                 /* break; */
 744                                 }
 745                         }
 746
 747 #ifdef OPENSSL_SYS_WINDOWS
 748                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
 749 #else
 750                 else if (FD_ISSET(fileno(stdin),&readfds))
 751 #endif
 752                         {
 753                         if (crlf)
 754                                 {
 755                                 int j, lf_num;
 756
 757                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
 758                                 lf_num = 0;
 759                                 /* both loops are skipped when i <= 0 */
 760                                 for (j = 0; j < i; j++)
 761                                         if (cbuf[j] == '\n')
 762                                                 lf_num++;
 763                                 for (j = i-1; j >= 0; j--)
 764                                         {
 765                                         cbuf[j+lf_num] = cbuf[j];
 766                                         if (cbuf[j] == '\n')
 767                                                 {
 768                                                 lf_num--;
 769                                                 i++;
 770                                                 cbuf[j+lf_num] = '\r';
 771                                                 }
 772                                         }
 773                                 assert(lf_num == 0);
 774                                 }
 775                         else
 776                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
 777
 778                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
 779                                 {
 780                                 BIO_printf(bio_err,"DONE\n");
 781                                 goto shut;
 782                                 }
 783
 784                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
 785                                 {
 786                                 BIO_printf(bio_err,"RENEGOTIATING\n");
 787                                 SSL_renegotiate(con);
 788                                 cbuf_len=0;
 789                                 }
 790                         else
 791                                 {
 792                                 cbuf_len=i;
 793                                 cbuf_off=0;
 794 #ifdef CHARSET_EBCDIC
 795                                 ebcdic2ascii(cbuf, cbuf, i);
 796 #endif
 797                                 }
 798
 799                         write_ssl=1;
 800                         read_tty=0;
 801                         }
 802                 }
 803 shut:
 804         SSL_shutdown(con);
 805         SHUTDOWN(SSL_get_fd(con));
 806         ret=0;
 807 end:
 808         if(prexit) print_stuff(bio_c_out,con,1);
 809         if (con != NULL) SSL_free(con);
 810         if (con2 != NULL) SSL_free(con2);
 811         if (ctx != NULL) SSL_CTX_free(ctx);
 812         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); OPENSSL_free(cbuf); }
 813         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); OPENSSL_free(sbuf); }
 814         if (bio_c_out != NULL)
 815                 {
 816                 BIO_free(bio_c_out);
 817                 bio_c_out=NULL;
 818                 }
 819         EXIT(ret);
 820         }
 821
 822
 823 static void print_stuff(BIO *bio, SSL *s, int full)
 824         {
 825         X509 *peer=NULL;
 826         char *p;
 827         static char *space="                ";
 828         char buf[BUFSIZ];
 829         STACK_OF(X509) *sk;
 830         STACK_OF(X509_NAME) *sk2;
 831         SSL_CIPHER *c;
 832         X509_NAME *xn;
 833         int j,i;
 834
 835         if (full)
 836                 {
 837                 int got_a_chain = 0;
 838
 839                 sk=SSL_get_peer_cert_chain(s);
 840                 if (sk != NULL)
 841                         {
 842                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
 843
 844                         BIO_printf(bio,"---\nCertificate chain\n");
 845                         for (i=0; i<sk_X509_num(sk); i++)
 846                                 {
 847                                 X509_NAME_oneline(X509_get_subject_name(
 848                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 849                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
 850                                 X509_NAME_oneline(X509_get_issuer_name(
 851                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 852                                 BIO_printf(bio,"   i:%s\n",buf);
 853                                 if (c_showcerts)
 854                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
 855                                 }
 856                         }
 857
 858                 BIO_printf(bio,"---\n");
 859                 peer=SSL_get_peer_certificate(s);
 860                 if (peer != NULL)
 861                         {
 862                         BIO_printf(bio,"Server certificate\n");
 863                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
 864                                 PEM_write_bio_X509(bio,peer);
 865                         X509_NAME_oneline(X509_get_subject_name(peer),
 866                                 buf,BUFSIZ);
 867                         BIO_printf(bio,"subject=%s\n",buf);
 868                         X509_NAME_oneline(X509_get_issuer_name(peer),
 869                                 buf,BUFSIZ);
 870                         BIO_printf(bio,"issuer=%s\n",buf);
 871                         }
 872                 else
 873                         BIO_printf(bio,"no peer certificate available\n");
 874
 875                 sk2=SSL_get_client_CA_list(s);
 876                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
 877                         {
 878                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
 879                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
 880                                 {
 881                                 xn=sk_X509_NAME_value(sk2,i);
 882                                 X509_NAME_oneline(xn,buf,sizeof(buf));
 883                                 BIO_write(bio,buf,strlen(buf));
 884                                 BIO_write(bio,"\n",1);
 885                                 }
 886                         }
 887                 else
 888                         {
 889                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
 890                         }
 891                 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
 892                 if (p != NULL)
 893                         {
 894                         /* This works only for SSL 2.  In later protocol
 895                          * versions, the client does not know what other
 896                          * ciphers (in addition to the one to be used
 897                          * in the current connection) the server supports. */
 898
 899                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
 900                         j=i=0;
 901                         while (*p)
 902                                 {
 903                                 if (*p == ':')
 904                                         {
 905                                         BIO_write(bio,space,15-j%25);
 906                                         i++;
 907                                         j=0;
 908                                         BIO_write(bio,((i%3)?" ":"\n"),1);
 909                                         }
 910                                 else
 911                                         {
 912                                         BIO_write(bio,p,1);
 913                                         j++;
 914                                         }
 915                                 p++;
 916                                 }
 917                         BIO_write(bio,"\n",1);
 918                         }
 919
 920                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
 921                         BIO_number_read(SSL_get_rbio(s)),
 922                         BIO_number_written(SSL_get_wbio(s)));
 923                 }
 924         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
 925         c=SSL_get_current_cipher(s);
 926         BIO_printf(bio,"%s, Cipher is %s\n",
 927                 SSL_CIPHER_get_version(c),
 928                 SSL_CIPHER_get_name(c));
 929         if (peer != NULL) {
 930                 EVP_PKEY *pktmp;
 931                 pktmp = X509_get_pubkey(peer);
 932                 BIO_printf(bio,"Server public key is %d bit\n",
 933                                                          EVP_PKEY_bits(pktmp));
 934                 EVP_PKEY_free(pktmp);
 935         }
 936         SSL_SESSION_print(bio,SSL_get_session(s));
 937         BIO_printf(bio,"---\n");
 938         if (peer != NULL)
 939                 X509_free(peer);
 940         }
 941