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 #include <openssl/e_os2.h>
  64 #ifdef OPENSSL_NO_STDIO
  65 #define APPS_WIN16
  66 #endif
  67
  68 /* With IPv6, it looks like Digital has mixed up the proper order of
  69    recursive header file inclusion, resulting in the compiler complaining
  70    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
  71    is needed to have fileno() declared correctly...  So let's define u_int */
  72 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
  73 #define __U_INT
  74 typedef unsigned int u_int;
  75 #endif
  76
  77 #define USE_SOCKETS
  78 #include "apps.h"
  79 #include <openssl/x509.h>
  80 #include <openssl/ssl.h>
  81 #include <openssl/err.h>
  82 #include <openssl/pem.h>
  83 #include <openssl/engine.h>
  84 #include "s_apps.h"
  85
  86 #ifdef OPENSSL_SYS_WINDOWS
  87 #include <conio.h>
  88 #endif
  89
  90
  91 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
  92 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
  93 #undef FIONBIO
  94 #endif
  95
  96 #undef PROG
  97 #define PROG    s_client_main
  98
  99 /*#define SSL_HOST_NAME "www.netscape.com" */
 100 /*#define SSL_HOST_NAME "193.118.187.102" */
 101 #define SSL_HOST_NAME   "localhost"
 102
 103 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 104
 105 #undef BUFSIZZ
 106 #define BUFSIZZ 1024*8
 107
 108 extern int verify_depth;
 109 extern int verify_error;
 110
 111 #ifdef FIONBIO
 112 static int c_nbio=0;
 113 #endif
 114 static int c_Pause=0;
 115 static int c_debug=0;
 116 static int c_showcerts=0;
 117
 118 static void sc_usage(void);
 119 static void print_stuff(BIO *berr,SSL *con,int full);
 120 static BIO *bio_c_out=NULL;
 121 static int c_quiet=0;
 122 static int c_ign_eof=0;
 123
 124 static void sc_usage(void)
 125         {
 126         BIO_printf(bio_err,"usage: s_client args\n");
 127         BIO_printf(bio_err,"\n");
 128         BIO_printf(bio_err," -host host     - use -connect instead\n");
 129         BIO_printf(bio_err," -port port     - use -connect instead\n");
 130         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 131
 132         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 133         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 134         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
 135         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 136         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 137         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 138         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 139         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 140         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 141         BIO_printf(bio_err," -debug        - extra output\n");
 142         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 143         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 144 #ifdef FIONBIO
 145         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 146 #endif
 147         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 148         BIO_printf(bio_err," -quiet        - no s_client output\n");
 149         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 150         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 151         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 152         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 153         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 154         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 155         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 156         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 157         BIO_printf(bio_err,"                 command to see what is available\n");
 158         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 159         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 160
 161         }
 162
 163 int MAIN(int, char **);
 164
 165 int MAIN(int argc, char **argv)
 166         {
 167         int off=0;
 168         SSL *con=NULL,*con2=NULL;
 169         int s,k,width,state=0;
 170         char *cbuf=NULL,*sbuf=NULL;
 171         int cbuf_len,cbuf_off;
 172         int sbuf_len,sbuf_off;
 173         fd_set readfds,writefds;
 174         short port=PORT;
 175         int full_log=1;
 176         char *host=SSL_HOST_NAME;
 177         char *cert_file=NULL,*key_file=NULL;
 178         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 179         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 180         int crlf=0;
 181         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 182         SSL_CTX *ctx=NULL;
 183         int ret=1,in_init=1,i,nbio_test=0;
 184         int prexit = 0;
 185         SSL_METHOD *meth=NULL;
 186         BIO *sbio;
 187         char *inrand=NULL;
 188         char *engine_id=NULL;
 189         ENGINE *e=NULL;
 190 #ifdef OPENSSL_SYS_WINDOWS
 191         struct timeval tv;
 192 #endif
 193
 194 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 195         meth=SSLv23_client_method();
 196 #elif !defined(OPENSSL_NO_SSL3)
 197         meth=SSLv3_client_method();
 198 #elif !defined(OPENSSL_NO_SSL2)
 199         meth=SSLv2_client_method();
 200 #endif
 201
 202         apps_startup();
 203         c_Pause=0;
 204         c_quiet=0;
 205         c_ign_eof=0;
 206         c_debug=0;
 207         c_showcerts=0;
 208
 209         if (bio_err == NULL)
 210                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 211
 212         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 213                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 214                 {
 215                 BIO_printf(bio_err,"out of memory\n");
 216                 goto end;
 217                 }
 218
 219         verify_depth=0;
 220         verify_error=X509_V_OK;
 221 #ifdef FIONBIO
 222         c_nbio=0;
 223 #endif
 224
 225         argc--;
 226         argv++;
 227         while (argc >= 1)
 228                 {
 229                 if      (strcmp(*argv,"-host") == 0)
 230                         {
 231                         if (--argc < 1) goto bad;
 232                         host= *(++argv);
 233                         }
 234                 else if (strcmp(*argv,"-port") == 0)
 235                         {
 236                         if (--argc < 1) goto bad;
 237                         port=atoi(*(++argv));
 238                         if (port == 0) goto bad;
 239                         }
 240                 else if (strcmp(*argv,"-connect") == 0)
 241                         {
 242                         if (--argc < 1) goto bad;
 243                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 244                                 goto bad;
 245                         }
 246                 else if (strcmp(*argv,"-verify") == 0)
 247                         {
 248                         verify=SSL_VERIFY_PEER;
 249                         if (--argc < 1) goto bad;
 250                         verify_depth=atoi(*(++argv));
 251                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 252                         }
 253                 else if (strcmp(*argv,"-cert") == 0)
 254                         {
 255                         if (--argc < 1) goto bad;
 256                         cert_file= *(++argv);
 257                         }
 258                 else if (strcmp(*argv,"-prexit") == 0)
 259                         prexit=1;
 260                 else if (strcmp(*argv,"-crlf") == 0)
 261                         crlf=1;
 262                 else if (strcmp(*argv,"-quiet") == 0)
 263                         {
 264                         c_quiet=1;
 265                         c_ign_eof=1;
 266                         }
 267                 else if (strcmp(*argv,"-ign_eof") == 0)
 268                         c_ign_eof=1;
 269                 else if (strcmp(*argv,"-pause") == 0)
 270                         c_Pause=1;
 271                 else if (strcmp(*argv,"-debug") == 0)
 272                         c_debug=1;
 273                 else if (strcmp(*argv,"-showcerts") == 0)
 274                         c_showcerts=1;
 275                 else if (strcmp(*argv,"-nbio_test") == 0)
 276                         nbio_test=1;
 277                 else if (strcmp(*argv,"-state") == 0)
 278                         state=1;
 279 #ifndef OPENSSL_NO_SSL2
 280                 else if (strcmp(*argv,"-ssl2") == 0)
 281                         meth=SSLv2_client_method();
 282 #endif
 283 #ifndef OPENSSL_NO_SSL3
 284                 else if (strcmp(*argv,"-ssl3") == 0)
 285                         meth=SSLv3_client_method();
 286 #endif
 287 #ifndef OPENSSL_NO_TLS1
 288                 else if (strcmp(*argv,"-tls1") == 0)
 289                         meth=TLSv1_client_method();
 290 #endif
 291                 else if (strcmp(*argv,"-bugs") == 0)
 292                         bugs=1;
 293                 else if (strcmp(*argv,"-key") == 0)
 294                         {
 295                         if (--argc < 1) goto bad;
 296                         key_file= *(++argv);
 297                         }
 298                 else if (strcmp(*argv,"-reconnect") == 0)
 299                         {
 300                         reconnect=5;
 301                         }
 302                 else if (strcmp(*argv,"-CApath") == 0)
 303                         {
 304                         if (--argc < 1) goto bad;
 305                         CApath= *(++argv);
 306                         }
 307                 else if (strcmp(*argv,"-CAfile") == 0)
 308                         {
 309                         if (--argc < 1) goto bad;
 310                         CAfile= *(++argv);
 311                         }
 312                 else if (strcmp(*argv,"-no_tls1") == 0)
 313                         off|=SSL_OP_NO_TLSv1;
 314                 else if (strcmp(*argv,"-no_ssl3") == 0)
 315                         off|=SSL_OP_NO_SSLv3;
 316                 else if (strcmp(*argv,"-no_ssl2") == 0)
 317                         off|=SSL_OP_NO_SSLv2;
 318                 else if (strcmp(*argv,"-serverpref") == 0)
 319                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 320                 else if (strcmp(*argv,"-cipher") == 0)
 321                         {
 322                         if (--argc < 1) goto bad;
 323                         cipher= *(++argv);
 324                         }
 325 #ifdef FIONBIO
 326                 else if (strcmp(*argv,"-nbio") == 0)
 327                         { c_nbio=1; }
 328 #endif
 329                 else if (strcmp(*argv,"-engine") == 0)
 330                         {
 331                         if (--argc < 1) goto bad;
 332                         engine_id = *(++argv);
 333                         }
 334                 else if (strcmp(*argv,"-rand") == 0)
 335                         {
 336                         if (--argc < 1) goto bad;
 337                         inrand= *(++argv);
 338                         }
 339                 else
 340                         {
 341                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 342                         badop=1;
 343                         break;
 344                         }
 345                 argc--;
 346                 argv++;
 347                 }
 348         if (badop)
 349                 {
 350 bad:
 351                 sc_usage();
 352                 goto end;
 353                 }
 354
 355         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
 356                 && !RAND_status())
 357                 {
 358                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 359                 }
 360         if (inrand != NULL)
 361                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 362                         app_RAND_load_files(inrand));
 363
 364         if (bio_c_out == NULL)
 365                 {
 366                 if (c_quiet)
 367                         {
 368                         bio_c_out=BIO_new(BIO_s_null());
 369                         }
 370                 else
 371                         {
 372                         if (bio_c_out == NULL)
 373                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 374                         }
 375                 }
 376
 377         OpenSSL_add_ssl_algorithms();
 378         SSL_load_error_strings();
 379
 380         if (engine_id != NULL)
 381                 {
 382                 if((e = ENGINE_by_id(engine_id)) == NULL)
 383                         {
 384                         BIO_printf(bio_err,"invalid engine\n");
 385                         ERR_print_errors(bio_err);
 386                         goto end;
 387                         }
 388                 if (c_debug)
 389                         {
 390                         ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM,
 391                                 0, bio_err, 0);
 392                         }
 393                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
 394                         {
 395                         BIO_printf(bio_err,"can't use that engine\n");
 396                         ERR_print_errors(bio_err);
 397                         goto end;
 398                         }
 399                 BIO_printf(bio_err,"engine \"%s\" set.\n", engine_id);
 400                 ENGINE_free(e);
 401                 }
 402
 403         ctx=SSL_CTX_new(meth);
 404         if (ctx == NULL)
 405                 {
 406                 ERR_print_errors(bio_err);
 407                 goto end;
 408                 }
 409
 410         if (bugs)
 411                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 412         else
 413                 SSL_CTX_set_options(ctx,off);
 414
 415         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 416         if (cipher != NULL)
 417                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
 418                 BIO_printf(bio_err,"error setting cipher list\n");
 419                 ERR_print_errors(bio_err);
 420                 goto end;
 421         }
 422 #if 0
 423         else
 424                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 425 #endif
 426
 427         SSL_CTX_set_verify(ctx,verify,verify_callback);
 428         if (!set_cert_stuff(ctx,cert_file,key_file))
 429                 goto end;
 430
 431         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 432                 (!SSL_CTX_set_default_verify_paths(ctx)))
 433                 {
 434                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
 435                 ERR_print_errors(bio_err);
 436                 /* goto end; */
 437                 }
 438
 439
 440         con=SSL_new(ctx);
 441 #ifndef OPENSSL_NO_KRB5
 442         if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
 443                 {
 444                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
 445                 }
 446 #endif  /* OPENSSL_NO_KRB5  */
 447 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 448
 449 re_start:
 450
 451         if (init_client(&s,host,port) == 0)
 452                 {
 453                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 454                 SHUTDOWN(s);
 455                 goto end;
 456                 }
 457         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 458
 459 #ifdef FIONBIO
 460         if (c_nbio)
 461                 {
 462                 unsigned long l=1;
 463                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 464                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 465                         {
 466                         ERR_print_errors(bio_err);
 467                         goto end;
 468                         }
 469                 }
 470 #endif
 471         if (c_Pause & 0x01) con->debug=1;
 472         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 473
 474         if (nbio_test)
 475                 {
 476                 BIO *test;
 477
 478                 test=BIO_new(BIO_f_nbio_test());
 479                 sbio=BIO_push(test,sbio);
 480                 }
 481
 482         if (c_debug)
 483                 {
 484                 con->debug=1;
 485                 BIO_set_callback(sbio,bio_dump_cb);
 486                 BIO_set_callback_arg(sbio,bio_c_out);
 487                 }
 488
 489         SSL_set_bio(con,sbio,sbio);
 490         SSL_set_connect_state(con);
 491
 492         /* ok, lets connect */
 493         width=SSL_get_fd(con)+1;
 494
 495         read_tty=1;
 496         write_tty=0;
 497         tty_on=0;
 498         read_ssl=1;
 499         write_ssl=1;
 500
 501         cbuf_len=0;
 502         cbuf_off=0;
 503         sbuf_len=0;
 504         sbuf_off=0;
 505
 506         for (;;)
 507                 {
 508                 FD_ZERO(&readfds);
 509                 FD_ZERO(&writefds);
 510
 511                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
 512                         {
 513                         in_init=1;
 514                         tty_on=0;
 515                         }
 516                 else
 517                         {
 518                         tty_on=1;
 519                         if (in_init)
 520                                 {
 521                                 in_init=0;
 522                                 print_stuff(bio_c_out,con,full_log);
 523                                 if (full_log > 0) full_log--;
 524
 525                                 if (reconnect)
 526                                         {
 527                                         reconnect--;
 528                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
 529                                         SSL_shutdown(con);
 530                                         SSL_set_connect_state(con);
 531                                         SHUTDOWN(SSL_get_fd(con));
 532                                         goto re_start;
 533                                         }
 534                                 }
 535                         }
 536
 537                 ssl_pending = read_ssl && SSL_pending(con);
 538
 539                 if (!ssl_pending)
 540                         {
 541 #ifndef OPENSSL_SYS_WINDOWS
 542                         if (tty_on)
 543                                 {
 544                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
 545                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
 546                                 }
 547                         if (read_ssl)
 548                                 FD_SET(SSL_get_fd(con),&readfds);
 549                         if (write_ssl)
 550                                 FD_SET(SSL_get_fd(con),&writefds);
 551 #else
 552                         if(!tty_on || !write_tty) {
 553                                 if (read_ssl)
 554                                         FD_SET(SSL_get_fd(con),&readfds);
 555                                 if (write_ssl)
 556                                         FD_SET(SSL_get_fd(con),&writefds);
 557                         }
 558 #endif
 559 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
 560                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 561
 562                         /* Note: under VMS with SOCKETSHR the second parameter
 563                          * is currently of type (int *) whereas under other
 564                          * systems it is (void *) if you don't have a cast it
 565                          * will choke the compiler: if you do have a cast then
 566                          * you can either go for (int *) or (void *).
 567                          */
 568 #ifdef OPENSSL_SYS_WINDOWS
 569                         /* Under Windows we make the assumption that we can
 570                          * always write to the tty: therefore if we need to
 571                          * write to the tty we just fall through. Otherwise
 572                          * we timeout the select every second and see if there
 573                          * are any keypresses. Note: this is a hack, in a proper
 574                          * Windows application we wouldn't do this.
 575                          */
 576                         i=0;
 577                         if(!write_tty) {
 578                                 if(read_tty) {
 579                                         tv.tv_sec = 1;
 580                                         tv.tv_usec = 0;
 581                                         i=select(width,(void *)&readfds,(void *)&writefds,
 582                                                  NULL,&tv);
 583                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
 584                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
 585                                          NULL,NULL);
 586                         }
 587 #else
 588                         i=select(width,(void *)&readfds,(void *)&writefds,
 589                                  NULL,NULL);
 590 #endif
 591                         if ( i < 0)
 592                                 {
 593                                 BIO_printf(bio_err,"bad select %d\n",
 594                                 get_last_socket_error());
 595                                 goto shut;
 596                                 /* goto end; */
 597                                 }
 598                         }
 599
 600                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
 601                         {
 602                         k=SSL_write(con,&(cbuf[cbuf_off]),
 603                                 (unsigned int)cbuf_len);
 604                         switch (SSL_get_error(con,k))
 605                                 {
 606                         case SSL_ERROR_NONE:
 607                                 cbuf_off+=k;
 608                                 cbuf_len-=k;
 609                                 if (k <= 0) goto end;
 610                                 /* we have done a  write(con,NULL,0); */
 611                                 if (cbuf_len <= 0)
 612                                         {
 613                                         read_tty=1;
 614                                         write_ssl=0;
 615                                         }
 616                                 else /* if (cbuf_len > 0) */
 617                                         {
 618                                         read_tty=0;
 619                                         write_ssl=1;
 620                                         }
 621                                 break;
 622                         case SSL_ERROR_WANT_WRITE:
 623                                 BIO_printf(bio_c_out,"write W BLOCK\n");
 624                                 write_ssl=1;
 625                                 read_tty=0;
 626                                 break;
 627                         case SSL_ERROR_WANT_READ:
 628                                 BIO_printf(bio_c_out,"write R BLOCK\n");
 629                                 write_tty=0;
 630                                 read_ssl=1;
 631                                 write_ssl=0;
 632                                 break;
 633                         case SSL_ERROR_WANT_X509_LOOKUP:
 634                                 BIO_printf(bio_c_out,"write X BLOCK\n");
 635                                 break;
 636                         case SSL_ERROR_ZERO_RETURN:
 637                                 if (cbuf_len != 0)
 638                                         {
 639                                         BIO_printf(bio_c_out,"shutdown\n");
 640                                         goto shut;
 641                                         }
 642                                 else
 643                                         {
 644                                         read_tty=1;
 645                                         write_ssl=0;
 646                                         break;
 647                                         }
 648
 649                         case SSL_ERROR_SYSCALL:
 650                                 if ((k != 0) || (cbuf_len != 0))
 651                                         {
 652                                         BIO_printf(bio_err,"write:errno=%d\n",
 653                                                 get_last_socket_error());
 654                                         goto shut;
 655                                         }
 656                                 else
 657                                         {
 658                                         read_tty=1;
 659                                         write_ssl=0;
 660                                         }
 661                                 break;
 662                         case SSL_ERROR_SSL:
 663                                 ERR_print_errors(bio_err);
 664                                 goto shut;
 665                                 }
 666                         }
 667 #ifdef OPENSSL_SYS_WINDOWS
 668                 /* Assume Windows can always write */
 669                 else if (!ssl_pending && write_tty)
 670 #else
 671                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
 672 #endif
 673                         {
 674 #ifdef CHARSET_EBCDIC
 675                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
 676 #endif
 677                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
 678
 679                         if (i <= 0)
 680                                 {
 681                                 BIO_printf(bio_c_out,"DONE\n");
 682                                 goto shut;
 683                                 /* goto end; */
 684                                 }
 685
 686                         sbuf_len-=i;;
 687                         sbuf_off+=i;
 688                         if (sbuf_len <= 0)
 689                                 {
 690                                 read_ssl=1;
 691                                 write_tty=0;
 692                                 }
 693                         }
 694                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
 695                         {
 696 #ifdef RENEG
 697 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
 698 #endif
 699 #if 1
 700                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
 701 #else
 702 /* Demo for pending and peek :-) */
 703                         k=SSL_read(con,sbuf,16);
 704 { char zbuf[10240];
 705 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
 706 }
 707 #endif
 708
 709                         switch (SSL_get_error(con,k))
 710                                 {
 711                         case SSL_ERROR_NONE:
 712                                 if (k <= 0)
 713                                         goto end;
 714                                 sbuf_off=0;
 715                                 sbuf_len=k;
 716
 717                                 read_ssl=0;
 718                                 write_tty=1;
 719                                 break;
 720                         case SSL_ERROR_WANT_WRITE:
 721                                 BIO_printf(bio_c_out,"read W BLOCK\n");
 722                                 write_ssl=1;
 723                                 read_tty=0;
 724                                 break;
 725                         case SSL_ERROR_WANT_READ:
 726                                 BIO_printf(bio_c_out,"read R BLOCK\n");
 727                                 write_tty=0;
 728                                 read_ssl=1;
 729                                 if ((read_tty == 0) && (write_ssl == 0))
 730                                         write_ssl=1;
 731                                 break;
 732                         case SSL_ERROR_WANT_X509_LOOKUP:
 733                                 BIO_printf(bio_c_out,"read X BLOCK\n");
 734                                 break;
 735                         case SSL_ERROR_SYSCALL:
 736                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
 737                                 goto shut;
 738                         case SSL_ERROR_ZERO_RETURN:
 739                                 BIO_printf(bio_c_out,"closed\n");
 740                                 goto shut;
 741                         case SSL_ERROR_SSL:
 742                                 ERR_print_errors(bio_err);
 743                                 goto shut;
 744                                 /* break; */
 745                                 }
 746                         }
 747
 748 #ifdef OPENSSL_SYS_WINDOWS
 749                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
 750 #else
 751                 else if (FD_ISSET(fileno(stdin),&readfds))
 752 #endif
 753                         {
 754                         if (crlf)
 755                                 {
 756                                 int j, lf_num;
 757
 758                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
 759                                 lf_num = 0;
 760                                 /* both loops are skipped when i <= 0 */
 761                                 for (j = 0; j < i; j++)
 762                                         if (cbuf[j] == '\n')
 763                                                 lf_num++;
 764                                 for (j = i-1; j >= 0; j--)
 765                                         {
 766                                         cbuf[j+lf_num] = cbuf[j];
 767                                         if (cbuf[j] == '\n')
 768                                                 {
 769                                                 lf_num--;
 770                                                 i++;
 771                                                 cbuf[j+lf_num] = '\r';
 772                                                 }
 773                                         }
 774                                 assert(lf_num == 0);
 775                                 }
 776                         else
 777                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
 778
 779                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
 780                                 {
 781                                 BIO_printf(bio_err,"DONE\n");
 782                                 goto shut;
 783                                 }
 784
 785                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
 786                                 {
 787                                 BIO_printf(bio_err,"RENEGOTIATING\n");
 788                                 SSL_renegotiate(con);
 789                                 cbuf_len=0;
 790                                 }
 791                         else
 792                                 {
 793                                 cbuf_len=i;
 794                                 cbuf_off=0;
 795 #ifdef CHARSET_EBCDIC
 796                                 ebcdic2ascii(cbuf, cbuf, i);
 797 #endif
 798                                 }
 799
 800                         write_ssl=1;
 801                         read_tty=0;
 802                         }
 803                 }
 804 shut:
 805         SSL_shutdown(con);
 806         SHUTDOWN(SSL_get_fd(con));
 807         ret=0;
 808 end:
 809         if(prexit) print_stuff(bio_c_out,con,1);
 810         if (con != NULL) SSL_free(con);
 811         if (con2 != NULL) SSL_free(con2);
 812         if (ctx != NULL) SSL_CTX_free(ctx);
 813         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); OPENSSL_free(cbuf); }
 814         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); OPENSSL_free(sbuf); }
 815         if (bio_c_out != NULL)
 816                 {
 817                 BIO_free(bio_c_out);
 818                 bio_c_out=NULL;
 819                 }
 820         EXIT(ret);
 821         }
 822
 823
 824 static void print_stuff(BIO *bio, SSL *s, int full)
 825         {
 826         X509 *peer=NULL;
 827         char *p;
 828         static char *space="                ";
 829         char buf[BUFSIZ];
 830         STACK_OF(X509) *sk;
 831         STACK_OF(X509_NAME) *sk2;
 832         SSL_CIPHER *c;
 833         X509_NAME *xn;
 834         int j,i;
 835
 836         if (full)
 837                 {
 838                 int got_a_chain = 0;
 839
 840                 sk=SSL_get_peer_cert_chain(s);
 841                 if (sk != NULL)
 842                         {
 843                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
 844
 845                         BIO_printf(bio,"---\nCertificate chain\n");
 846                         for (i=0; i<sk_X509_num(sk); i++)
 847                                 {
 848                                 X509_NAME_oneline(X509_get_subject_name(
 849                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 850                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
 851                                 X509_NAME_oneline(X509_get_issuer_name(
 852                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 853                                 BIO_printf(bio,"   i:%s\n",buf);
 854                                 if (c_showcerts)
 855                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
 856                                 }
 857                         }
 858
 859                 BIO_printf(bio,"---\n");
 860                 peer=SSL_get_peer_certificate(s);
 861                 if (peer != NULL)
 862                         {
 863                         BIO_printf(bio,"Server certificate\n");
 864                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
 865                                 PEM_write_bio_X509(bio,peer);
 866                         X509_NAME_oneline(X509_get_subject_name(peer),
 867                                 buf,BUFSIZ);
 868                         BIO_printf(bio,"subject=%s\n",buf);
 869                         X509_NAME_oneline(X509_get_issuer_name(peer),
 870                                 buf,BUFSIZ);
 871                         BIO_printf(bio,"issuer=%s\n",buf);
 872                         }
 873                 else
 874                         BIO_printf(bio,"no peer certificate available\n");
 875
 876                 sk2=SSL_get_client_CA_list(s);
 877                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
 878                         {
 879                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
 880                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
 881                                 {
 882                                 xn=sk_X509_NAME_value(sk2,i);
 883                                 X509_NAME_oneline(xn,buf,sizeof(buf));
 884                                 BIO_write(bio,buf,strlen(buf));
 885                                 BIO_write(bio,"\n",1);
 886                                 }
 887                         }
 888                 else
 889                         {
 890                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
 891                         }
 892                 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
 893                 if (p != NULL)
 894                         {
 895                         /* This works only for SSL 2.  In later protocol
 896                          * versions, the client does not know what other
 897                          * ciphers (in addition to the one to be used
 898                          * in the current connection) the server supports. */
 899
 900                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
 901                         j=i=0;
 902                         while (*p)
 903                                 {
 904                                 if (*p == ':')
 905                                         {
 906                                         BIO_write(bio,space,15-j%25);
 907                                         i++;
 908                                         j=0;
 909                                         BIO_write(bio,((i%3)?" ":"\n"),1);
 910                                         }
 911                                 else
 912                                         {
 913                                         BIO_write(bio,p,1);
 914                                         j++;
 915                                         }
 916                                 p++;
 917                                 }
 918                         BIO_write(bio,"\n",1);
 919                         }
 920
 921                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
 922                         BIO_number_read(SSL_get_rbio(s)),
 923                         BIO_number_written(SSL_get_wbio(s)));
 924                 }
 925         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
 926         c=SSL_get_current_cipher(s);
 927         BIO_printf(bio,"%s, Cipher is %s\n",
 928                 SSL_CIPHER_get_version(c),
 929                 SSL_CIPHER_get_name(c));
 930         if (peer != NULL) {
 931                 EVP_PKEY *pktmp;
 932                 pktmp = X509_get_pubkey(peer);
 933                 BIO_printf(bio,"Server public key is %d bit\n",
 934                                                          EVP_PKEY_bits(pktmp));
 935                 EVP_PKEY_free(pktmp);
 936         }
 937         SSL_SESSION_print(bio,SSL_get_session(s));
 938         BIO_printf(bio,"---\n");
 939         if (peer != NULL)
 940                 X509_free(peer);
 941         }
 942