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