apps/s_client.c

   1 /* apps/s_client.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <assert.h>
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #ifdef NO_STDIO
  64 #define APPS_WIN16
  65 #endif
  66
  67 /* With IPv6, it looks like Digital has mixed up the proper order of
  68    recursive header file inclusion, resulting in the compiler complaining
  69    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
  70    is needed to have fileno() declared correctly...  So let's define u_int */
  71 #if defined(VMS) && defined(__DECC) && !defined(__U_INT)
  72 #define __U_INT
  73 typedef unsigned int u_int;
  74 #endif
  75
  76 #define USE_SOCKETS
  77 #include "apps.h"
  78 #include <openssl/x509.h>
  79 #include <openssl/ssl.h>
  80 #include <openssl/err.h>
  81 #include <openssl/pem.h>
  82 #include "s_apps.h"
  83
  84 #ifdef WINDOWS
  85 #include <conio.h>
  86 #endif
  87
  88
  89 #if (defined(VMS) && __VMS_VER < 70000000)
  90 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
  91 #undef FIONBIO
  92 #endif
  93
  94 #undef PROG
  95 #define PROG    s_client_main
  96
  97 /*#define SSL_HOST_NAME "www.netscape.com" */
  98 /*#define SSL_HOST_NAME "193.118.187.102" */
  99 #define SSL_HOST_NAME   "localhost"
 100
 101 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 102
 103 #undef BUFSIZZ
 104 #define BUFSIZZ 1024*8
 105
 106 extern int verify_depth;
 107 extern int verify_error;
 108
 109 #ifdef FIONBIO
 110 static int c_nbio=0;
 111 #endif
 112 static int c_Pause=0;
 113 static int c_debug=0;
 114 static int c_showcerts=0;
 115
 116 static void sc_usage(void);
 117 static void print_stuff(BIO *berr,SSL *con,int full);
 118 static BIO *bio_c_out=NULL;
 119 static int c_quiet=0;
 120
 121 static void sc_usage(void)
 122         {
 123         BIO_printf(bio_err,"usage: s_client args\n");
 124         BIO_printf(bio_err,"\n");
 125         BIO_printf(bio_err," -host host     - use -connect instead\n");
 126         BIO_printf(bio_err," -port port     - use -connect instead\n");
 127         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 128
 129         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 130         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 131         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
 132         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 133         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 134         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 135         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 136         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 137         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 138         BIO_printf(bio_err," -debug        - extra output\n");
 139         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 140         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 141 #ifdef FIONBIO
 142         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 143 #endif
 144         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 145         BIO_printf(bio_err," -quiet        - no s_client output\n");
 146         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 147         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 148         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 149         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 150         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 151         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 152         BIO_printf(bio_err,"                 command to see what is available\n");
 153
 154         }
 155
 156 int MAIN(int, char **);
 157
 158 int MAIN(int argc, char **argv)
 159         {
 160         int off=0;
 161         SSL *con=NULL,*con2=NULL;
 162         int s,k,width,state=0;
 163         char *cbuf=NULL,*sbuf=NULL;
 164         int cbuf_len,cbuf_off;
 165         int sbuf_len,sbuf_off;
 166         fd_set readfds,writefds;
 167         short port=PORT;
 168         int full_log=1;
 169         char *host=SSL_HOST_NAME;
 170         char *cert_file=NULL,*key_file=NULL;
 171         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 172         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 173         int crlf=0;
 174         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 175         SSL_CTX *ctx=NULL;
 176         int ret=1,in_init=1,i,nbio_test=0;
 177         int prexit = 0;
 178         SSL_METHOD *meth=NULL;
 179         BIO *sbio;
 180 #ifdef WINDOWS
 181         struct timeval tv;
 182 #endif
 183
 184 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 185         meth=SSLv23_client_method();
 186 #elif !defined(NO_SSL3)
 187         meth=SSLv3_client_method();
 188 #elif !defined(NO_SSL2)
 189         meth=SSLv2_client_method();
 190 #endif
 191
 192         apps_startup();
 193         c_Pause=0;
 194         c_quiet=0;
 195         c_debug=0;
 196         c_showcerts=0;
 197
 198         if (bio_err == NULL)
 199                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 200
 201         if (    ((cbuf=Malloc(BUFSIZZ)) == NULL) ||
 202                 ((sbuf=Malloc(BUFSIZZ)) == NULL))
 203                 {
 204                 BIO_printf(bio_err,"out of memory\n");
 205                 goto end;
 206                 }
 207
 208         verify_depth=0;
 209         verify_error=X509_V_OK;
 210 #ifdef FIONBIO
 211         c_nbio=0;
 212 #endif
 213
 214         argc--;
 215         argv++;
 216         while (argc >= 1)
 217                 {
 218                 if      (strcmp(*argv,"-host") == 0)
 219                         {
 220                         if (--argc < 1) goto bad;
 221                         host= *(++argv);
 222                         }
 223                 else if (strcmp(*argv,"-port") == 0)
 224                         {
 225                         if (--argc < 1) goto bad;
 226                         port=atoi(*(++argv));
 227                         if (port == 0) goto bad;
 228                         }
 229                 else if (strcmp(*argv,"-connect") == 0)
 230                         {
 231                         if (--argc < 1) goto bad;
 232                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 233                                 goto bad;
 234                         }
 235                 else if (strcmp(*argv,"-verify") == 0)
 236                         {
 237                         verify=SSL_VERIFY_PEER;
 238                         if (--argc < 1) goto bad;
 239                         verify_depth=atoi(*(++argv));
 240                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 241                         }
 242                 else if (strcmp(*argv,"-cert") == 0)
 243                         {
 244                         if (--argc < 1) goto bad;
 245                         cert_file= *(++argv);
 246                         }
 247                 else if (strcmp(*argv,"-prexit") == 0)
 248                         prexit=1;
 249                 else if (strcmp(*argv,"-crlf") == 0)
 250                         crlf=1;
 251                 else if (strcmp(*argv,"-quiet") == 0)
 252                         c_quiet=1;
 253                 else if (strcmp(*argv,"-pause") == 0)
 254                         c_Pause=1;
 255                 else if (strcmp(*argv,"-debug") == 0)
 256                         c_debug=1;
 257                 else if (strcmp(*argv,"-showcerts") == 0)
 258                         c_showcerts=1;
 259                 else if (strcmp(*argv,"-nbio_test") == 0)
 260                         nbio_test=1;
 261                 else if (strcmp(*argv,"-state") == 0)
 262                         state=1;
 263 #ifndef NO_SSL2
 264                 else if (strcmp(*argv,"-ssl2") == 0)
 265                         meth=SSLv2_client_method();
 266 #endif
 267 #ifndef NO_SSL3
 268                 else if (strcmp(*argv,"-ssl3") == 0)
 269                         meth=SSLv3_client_method();
 270 #endif
 271 #ifndef NO_TLS1
 272                 else if (strcmp(*argv,"-tls1") == 0)
 273                         meth=TLSv1_client_method();
 274 #endif
 275                 else if (strcmp(*argv,"-bugs") == 0)
 276                         bugs=1;
 277                 else if (strcmp(*argv,"-key") == 0)
 278                         {
 279                         if (--argc < 1) goto bad;
 280                         key_file= *(++argv);
 281                         }
 282                 else if (strcmp(*argv,"-reconnect") == 0)
 283                         {
 284                         reconnect=5;
 285                         }
 286                 else if (strcmp(*argv,"-CApath") == 0)
 287                         {
 288                         if (--argc < 1) goto bad;
 289                         CApath= *(++argv);
 290                         }
 291                 else if (strcmp(*argv,"-CAfile") == 0)
 292                         {
 293                         if (--argc < 1) goto bad;
 294                         CAfile= *(++argv);
 295                         }
 296                 else if (strcmp(*argv,"-no_tls1") == 0)
 297                         off|=SSL_OP_NO_TLSv1;
 298                 else if (strcmp(*argv,"-no_ssl3") == 0)
 299                         off|=SSL_OP_NO_SSLv3;
 300                 else if (strcmp(*argv,"-no_ssl2") == 0)
 301                         off|=SSL_OP_NO_SSLv2;
 302                 else if (strcmp(*argv,"-cipher") == 0)
 303                         {
 304                         if (--argc < 1) goto bad;
 305                         cipher= *(++argv);
 306                         }
 307 #ifdef FIONBIO
 308                 else if (strcmp(*argv,"-nbio") == 0)
 309                         { c_nbio=1; }
 310 #endif
 311                 else
 312                         {
 313                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 314                         badop=1;
 315                         break;
 316                         }
 317                 argc--;
 318                 argv++;
 319                 }
 320         if (badop)
 321                 {
 322 bad:
 323                 sc_usage();
 324                 goto end;
 325                 }
 326
 327         app_RAND_load_file(NULL, bio_err, 0);
 328
 329         if (bio_c_out == NULL)
 330                 {
 331                 if (c_quiet)
 332                         {
 333                         bio_c_out=BIO_new(BIO_s_null());
 334                         }
 335                 else
 336                         {
 337                         if (bio_c_out == NULL)
 338                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 339                         }
 340                 }
 341
 342         OpenSSL_add_ssl_algorithms();
 343         SSL_load_error_strings();
 344         ctx=SSL_CTX_new(meth);
 345         if (ctx == NULL)
 346                 {
 347                 ERR_print_errors(bio_err);
 348                 goto end;
 349                 }
 350
 351         if (bugs)
 352                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 353         else
 354                 SSL_CTX_set_options(ctx,off);
 355
 356         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 357         if (cipher != NULL)
 358                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
 359                 BIO_printf(bio_err,"error setting cipher list\n");
 360                 ERR_print_errors(bio_err);
 361                 goto end;
 362         }
 363 #if 0
 364         else
 365                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 366 #endif
 367
 368         SSL_CTX_set_verify(ctx,verify,verify_callback);
 369         if (!set_cert_stuff(ctx,cert_file,key_file))
 370                 goto end;
 371
 372         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 373                 (!SSL_CTX_set_default_verify_paths(ctx)))
 374                 {
 375                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
 376                 ERR_print_errors(bio_err);
 377                 /* goto end; */
 378                 }
 379
 380
 381         con=SSL_new(ctx);
 382 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 383
 384 re_start:
 385
 386         if (init_client(&s,host,port) == 0)
 387                 {
 388                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 389                 SHUTDOWN(s);
 390                 goto end;
 391                 }
 392         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 393
 394 #ifdef FIONBIO
 395         if (c_nbio)
 396                 {
 397                 unsigned long l=1;
 398                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 399                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 400                         {
 401                         ERR_print_errors(bio_err);
 402                         goto end;
 403                         }
 404                 }
 405 #endif
 406         if (c_Pause & 0x01) con->debug=1;
 407         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 408
 409         if (nbio_test)
 410                 {
 411                 BIO *test;
 412
 413                 test=BIO_new(BIO_f_nbio_test());
 414                 sbio=BIO_push(test,sbio);
 415                 }
 416
 417         if (c_debug)
 418                 {
 419                 con->debug=1;
 420                 BIO_set_callback(sbio,bio_dump_cb);
 421                 BIO_set_callback_arg(sbio,bio_c_out);
 422                 }
 423
 424         SSL_set_bio(con,sbio,sbio);
 425         SSL_set_connect_state(con);
 426
 427         /* ok, lets connect */
 428         width=SSL_get_fd(con)+1;
 429
 430         read_tty=1;
 431         write_tty=0;
 432         tty_on=0;
 433         read_ssl=1;
 434         write_ssl=1;
 435
 436         cbuf_len=0;
 437         cbuf_off=0;
 438         sbuf_len=0;
 439         sbuf_off=0;
 440
 441         for (;;)
 442                 {
 443                 FD_ZERO(&readfds);
 444                 FD_ZERO(&writefds);
 445
 446                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
 447                         {
 448                         in_init=1;
 449                         tty_on=0;
 450                         }
 451                 else
 452                         {
 453                         tty_on=1;
 454                         if (in_init)
 455                                 {
 456                                 in_init=0;
 457                                 print_stuff(bio_c_out,con,full_log);
 458                                 if (full_log > 0) full_log--;
 459
 460                                 if (reconnect)
 461                                         {
 462                                         reconnect--;
 463                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
 464                                         SSL_shutdown(con);
 465                                         SSL_set_connect_state(con);
 466                                         SHUTDOWN(SSL_get_fd(con));
 467                                         goto re_start;
 468                                         }
 469                                 }
 470                         }
 471
 472                 ssl_pending = read_ssl && SSL_pending(con);
 473
 474                 if (!ssl_pending)
 475                         {
 476 #ifndef WINDOWS
 477                         if (tty_on)
 478                                 {
 479                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
 480                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
 481                                 }
 482                         if (read_ssl)
 483                                 FD_SET(SSL_get_fd(con),&readfds);
 484                         if (write_ssl)
 485                                 FD_SET(SSL_get_fd(con),&writefds);
 486 #else
 487                         if(!tty_on || !write_tty) {
 488                                 if (read_ssl)
 489                                         FD_SET(SSL_get_fd(con),&readfds);
 490                                 if (write_ssl)
 491                                         FD_SET(SSL_get_fd(con),&writefds);
 492                         }
 493 #endif
 494 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
 495                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 496
 497                         /* Note: under VMS with SOCKETSHR the second parameter
 498                          * is currently of type (int *) whereas under other
 499                          * systems it is (void *) if you don't have a cast it
 500                          * will choke the compiler: if you do have a cast then
 501                          * you can either go for (int *) or (void *).
 502                          */
 503 #ifdef WINDOWS
 504                         /* Under Windows we make the assumption that we can
 505                          * always write to the tty: therefore if we need to
 506                          * write to the tty we just fall through. Otherwise
 507                          * we timeout the select every second and see if there
 508                          * are any keypresses. Note: this is a hack, in a proper
 509                          * Windows application we wouldn't do this.
 510                          */
 511                         i=0;
 512                         if(!write_tty) {
 513                                 if(read_tty) {
 514                                         tv.tv_sec = 1;
 515                                         tv.tv_usec = 0;
 516                                         i=select(width,(void *)&readfds,(void *)&writefds,
 517                                                  NULL,&tv);
 518                                         if(!i && (!_kbhit() || !read_tty) ) continue;
 519                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
 520                                          NULL,NULL);
 521                         }
 522 #else
 523                         i=select(width,(void *)&readfds,(void *)&writefds,
 524                                  NULL,NULL);
 525 #endif
 526                         if ( i < 0)
 527                                 {
 528                                 BIO_printf(bio_err,"bad select %d\n",
 529                                 get_last_socket_error());
 530                                 goto shut;
 531                                 /* goto end; */
 532                                 }
 533                         }
 534
 535                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
 536                         {
 537                         k=SSL_write(con,&(cbuf[cbuf_off]),
 538                                 (unsigned int)cbuf_len);
 539                         switch (SSL_get_error(con,k))
 540                                 {
 541                         case SSL_ERROR_NONE:
 542                                 cbuf_off+=k;
 543                                 cbuf_len-=k;
 544                                 if (k <= 0) goto end;
 545                                 /* we have done a  write(con,NULL,0); */
 546                                 if (cbuf_len <= 0)
 547                                         {
 548                                         read_tty=1;
 549                                         write_ssl=0;
 550                                         }
 551                                 else /* if (cbuf_len > 0) */
 552                                         {
 553                                         read_tty=0;
 554                                         write_ssl=1;
 555                                         }
 556                                 break;
 557                         case SSL_ERROR_WANT_WRITE:
 558                                 BIO_printf(bio_c_out,"write W BLOCK\n");
 559                                 write_ssl=1;
 560                                 read_tty=0;
 561                                 break;
 562                         case SSL_ERROR_WANT_READ:
 563                                 BIO_printf(bio_c_out,"write R BLOCK\n");
 564                                 write_tty=0;
 565                                 read_ssl=1;
 566                                 write_ssl=0;
 567                                 break;
 568                         case SSL_ERROR_WANT_X509_LOOKUP:
 569                                 BIO_printf(bio_c_out,"write X BLOCK\n");
 570                                 break;
 571                         case SSL_ERROR_ZERO_RETURN:
 572                                 if (cbuf_len != 0)
 573                                         {
 574                                         BIO_printf(bio_c_out,"shutdown\n");
 575                                         goto shut;
 576                                         }
 577                                 else
 578                                         {
 579                                         read_tty=1;
 580                                         write_ssl=0;
 581                                         break;
 582                                         }
 583
 584                         case SSL_ERROR_SYSCALL:
 585                                 if ((k != 0) || (cbuf_len != 0))
 586                                         {
 587                                         BIO_printf(bio_err,"write:errno=%d\n",
 588                                                 get_last_socket_error());
 589                                         goto shut;
 590                                         }
 591                                 else
 592                                         {
 593                                         read_tty=1;
 594                                         write_ssl=0;
 595                                         }
 596                                 break;
 597                         case SSL_ERROR_SSL:
 598                                 ERR_print_errors(bio_err);
 599                                 goto shut;
 600                                 }
 601                         }
 602 #ifdef WINDOWS
 603                 /* Assume Windows can always write */
 604                 else if (!ssl_pending && write_tty)
 605 #else
 606                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
 607 #endif
 608                         {
 609 #ifdef CHARSET_EBCDIC
 610                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
 611 #endif
 612                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
 613
 614                         if (i <= 0)
 615                                 {
 616                                 BIO_printf(bio_c_out,"DONE\n");
 617                                 goto shut;
 618                                 /* goto end; */
 619                                 }
 620
 621                         sbuf_len-=i;;
 622                         sbuf_off+=i;
 623                         if (sbuf_len <= 0)
 624                                 {
 625                                 read_ssl=1;
 626                                 write_tty=0;
 627                                 }
 628                         }
 629                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
 630                         {
 631 #ifdef RENEG
 632 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
 633 #endif
 634 #if 1
 635                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
 636 #else
 637 /* Demo for pending and peek :-) */
 638                         k=SSL_read(con,sbuf,16);
 639 { char zbuf[10240];
 640 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
 641 }
 642 #endif
 643
 644                         switch (SSL_get_error(con,k))
 645                                 {
 646                         case SSL_ERROR_NONE:
 647                                 if (k <= 0)
 648                                         goto end;
 649                                 sbuf_off=0;
 650                                 sbuf_len=k;
 651
 652                                 read_ssl=0;
 653                                 write_tty=1;
 654                                 break;
 655                         case SSL_ERROR_WANT_WRITE:
 656                                 BIO_printf(bio_c_out,"read W BLOCK\n");
 657                                 write_ssl=1;
 658                                 read_tty=0;
 659                                 break;
 660                         case SSL_ERROR_WANT_READ:
 661                                 BIO_printf(bio_c_out,"read R BLOCK\n");
 662                                 write_tty=0;
 663                                 read_ssl=1;
 664                                 if ((read_tty == 0) && (write_ssl == 0))
 665                                         write_ssl=1;
 666                                 break;
 667                         case SSL_ERROR_WANT_X509_LOOKUP:
 668                                 BIO_printf(bio_c_out,"read X BLOCK\n");
 669                                 break;
 670                         case SSL_ERROR_SYSCALL:
 671                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
 672                                 goto shut;
 673                         case SSL_ERROR_ZERO_RETURN:
 674                                 BIO_printf(bio_c_out,"closed\n");
 675                                 goto shut;
 676                         case SSL_ERROR_SSL:
 677                                 ERR_print_errors(bio_err);
 678                                 goto shut;
 679                                 /* break; */
 680                                 }
 681                         }
 682
 683 #ifdef WINDOWS
 684                 else if (_kbhit())
 685 #else
 686                 else if (FD_ISSET(fileno(stdin),&readfds))
 687 #endif
 688                         {
 689                         if (crlf)
 690                                 {
 691                                 int j, lf_num;
 692
 693                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
 694                                 lf_num = 0;
 695                                 /* both loops are skipped when i <= 0 */
 696                                 for (j = 0; j < i; j++)
 697                                         if (cbuf[j] == '\n')
 698                                                 lf_num++;
 699                                 for (j = i-1; j >= 0; j--)
 700                                         {
 701                                         cbuf[j+lf_num] = cbuf[j];
 702                                         if (cbuf[j] == '\n')
 703                                                 {
 704                                                 lf_num--;
 705                                                 i++;
 706                                                 cbuf[j+lf_num] = '\r';
 707                                                 }
 708                                         }
 709                                 assert(lf_num == 0);
 710                                 }
 711                         else
 712                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
 713
 714                         if ((!c_quiet) && ((i <= 0) || (cbuf[0] == 'Q')))
 715                                 {
 716                                 BIO_printf(bio_err,"DONE\n");
 717                                 goto shut;
 718                                 }
 719
 720                         if ((!c_quiet) && (cbuf[0] == 'R'))
 721                                 {
 722                                 BIO_printf(bio_err,"RENEGOTIATING\n");
 723                                 SSL_renegotiate(con);
 724                                 cbuf_len=0;
 725                                 }
 726                         else
 727                                 {
 728                                 cbuf_len=i;
 729                                 cbuf_off=0;
 730 #ifdef CHARSET_EBCDIC
 731                                 ebcdic2ascii(cbuf, cbuf, i);
 732 #endif
 733                                 }
 734
 735                         write_ssl=1;
 736                         read_tty=0;
 737                         }
 738                 }
 739 shut:
 740         SSL_shutdown(con);
 741         SHUTDOWN(SSL_get_fd(con));
 742         ret=0;
 743 end:
 744         if(prexit) print_stuff(bio_c_out,con,1);
 745         if (con != NULL) SSL_free(con);
 746         if (con2 != NULL) SSL_free(con2);
 747         if (ctx != NULL) SSL_CTX_free(ctx);
 748         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); Free(cbuf); }
 749         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); Free(sbuf); }
 750         if (bio_c_out != NULL)
 751                 {
 752                 BIO_free(bio_c_out);
 753                 bio_c_out=NULL;
 754                 }
 755         EXIT(ret);
 756         }
 757
 758
 759 static void print_stuff(BIO *bio, SSL *s, int full)
 760         {
 761         X509 *peer=NULL;
 762         char *p;
 763         static char *space="                ";
 764         char buf[BUFSIZ];
 765         STACK_OF(X509) *sk;
 766         STACK_OF(X509_NAME) *sk2;
 767         SSL_CIPHER *c;
 768         X509_NAME *xn;
 769         int j,i;
 770
 771         if (full)
 772                 {
 773                 int got_a_chain = 0;
 774
 775                 sk=SSL_get_peer_cert_chain(s);
 776                 if (sk != NULL)
 777                         {
 778                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
 779
 780                         BIO_printf(bio,"---\nCertificate chain\n");
 781                         for (i=0; i<sk_X509_num(sk); i++)
 782                                 {
 783                                 X509_NAME_oneline(X509_get_subject_name(
 784                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 785                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
 786                                 X509_NAME_oneline(X509_get_issuer_name(
 787                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 788                                 BIO_printf(bio,"   i:%s\n",buf);
 789                                 if (c_showcerts)
 790                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
 791                                 }
 792                         }
 793
 794                 BIO_printf(bio,"---\n");
 795                 peer=SSL_get_peer_certificate(s);
 796                 if (peer != NULL)
 797                         {
 798                         BIO_printf(bio,"Server certificate\n");
 799                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
 800                                 PEM_write_bio_X509(bio,peer);
 801                         X509_NAME_oneline(X509_get_subject_name(peer),
 802                                 buf,BUFSIZ);
 803                         BIO_printf(bio,"subject=%s\n",buf);
 804                         X509_NAME_oneline(X509_get_issuer_name(peer),
 805                                 buf,BUFSIZ);
 806                         BIO_printf(bio,"issuer=%s\n",buf);
 807                         }
 808                 else
 809                         BIO_printf(bio,"no peer certificate available\n");
 810
 811                 sk2=SSL_get_client_CA_list(s);
 812                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
 813                         {
 814                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
 815                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
 816                                 {
 817                                 xn=sk_X509_NAME_value(sk2,i);
 818                                 X509_NAME_oneline(xn,buf,sizeof(buf));
 819                                 BIO_write(bio,buf,strlen(buf));
 820                                 BIO_write(bio,"\n",1);
 821                                 }
 822                         }
 823                 else
 824                         {
 825                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
 826                         }
 827                 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
 828                 if (p != NULL)
 829                         {
 830                         /* This works only for SSL 2.  In later protocol
 831                          * versions, the client does not know what other
 832                          * ciphers (in addition to the one to be used
 833                          * in the current connection) the server supports. */
 834
 835                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
 836                         j=i=0;
 837                         while (*p)
 838                                 {
 839                                 if (*p == ':')
 840                                         {
 841                                         BIO_write(bio,space,15-j%25);
 842                                         i++;
 843                                         j=0;
 844                                         BIO_write(bio,((i%3)?" ":"\n"),1);
 845                                         }
 846                                 else
 847                                         {
 848                                         BIO_write(bio,p,1);
 849                                         j++;
 850                                         }
 851                                 p++;
 852                                 }
 853                         BIO_write(bio,"\n",1);
 854                         }
 855
 856                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
 857                         BIO_number_read(SSL_get_rbio(s)),
 858                         BIO_number_written(SSL_get_wbio(s)));
 859                 }
 860         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
 861         c=SSL_get_current_cipher(s);
 862         BIO_printf(bio,"%s, Cipher is %s\n",
 863                 SSL_CIPHER_get_version(c),
 864                 SSL_CIPHER_get_name(c));
 865         if (peer != NULL) {
 866                 EVP_PKEY *pktmp;
 867                 pktmp = X509_get_pubkey(peer);
 868                 BIO_printf(bio,"Server public key is %d bit\n",
 869                                                          EVP_PKEY_bits(pktmp));
 870                 EVP_PKEY_free(pktmp);
 871         }
 872         SSL_SESSION_print(bio,SSL_get_session(s));
 873         BIO_printf(bio,"---\n");
 874         if (peer != NULL)
 875                 X509_free(peer);
 876         }
 877