apps/s_client.c

   1 /* apps/s_client.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <assert.h>
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #ifdef NO_STDIO
  64 #define APPS_WIN16
  65 #endif
  66
  67 /* With IPv6, it looks like Digital has mixed up the proper order of
  68    recursive header file inclusion, resulting in the compiler complaining
  69    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
  70    is needed to have fileno() declared correctly...  So let's define u_int */
  71 #if defined(VMS) && defined(__DECC) && !defined(__U_INT)
  72 #define __U_INT
  73 typedef unsigned int u_int;
  74 #endif
  75
  76 #define USE_SOCKETS
  77 #include "apps.h"
  78 #include <openssl/x509.h>
  79 #include <openssl/ssl.h>
  80 #include <openssl/err.h>
  81 #include <openssl/pem.h>
  82 #include "s_apps.h"
  83
  84 #ifdef WINDOWS
  85 #include <conio.h>
  86 #endif
  87
  88
  89 #if (defined(VMS) && __VMS_VER < 70000000)
  90 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
  91 #undef FIONBIO
  92 #endif
  93
  94 #undef PROG
  95 #define PROG    s_client_main
  96
  97 /*#define SSL_HOST_NAME "www.netscape.com" */
  98 /*#define SSL_HOST_NAME "193.118.187.102" */
  99 #define SSL_HOST_NAME   "localhost"
 100
 101 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 102
 103 #undef BUFSIZZ
 104 #define BUFSIZZ 1024*8
 105
 106 extern int verify_depth;
 107 extern int verify_error;
 108
 109 #ifdef FIONBIO
 110 static int c_nbio=0;
 111 #endif
 112 static int c_Pause=0;
 113 static int c_debug=0;
 114 static int c_showcerts=0;
 115
 116 static void sc_usage(void);
 117 static void print_stuff(BIO *berr,SSL *con,int full);
 118 static BIO *bio_c_out=NULL;
 119 static int c_quiet=0;
 120 static int c_ign_eof=0;
 121
 122 static void sc_usage(void)
 123         {
 124         BIO_printf(bio_err,"usage: s_client args\n");
 125         BIO_printf(bio_err,"\n");
 126         BIO_printf(bio_err," -host host     - use -connect instead\n");
 127         BIO_printf(bio_err," -port port     - use -connect instead\n");
 128         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 129
 130         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 131         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 132         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
 133         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 134         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 135         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 136         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 137         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 138         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 139         BIO_printf(bio_err," -debug        - extra output\n");
 140         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 141         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 142 #ifdef FIONBIO
 143         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 144 #endif
 145         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 146         BIO_printf(bio_err," -quiet        - no s_client output\n");
 147         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 148         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 149         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 150         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 151         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 152         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 153         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 154         BIO_printf(bio_err,"                 command to see what is available\n");
 155
 156         }
 157
 158 int MAIN(int, char **);
 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         int prexit = 0;
 180         SSL_METHOD *meth=NULL;
 181         BIO *sbio;
 182 #ifdef WINDOWS
 183         struct timeval tv;
 184 #endif
 185
 186 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 187         meth=SSLv23_client_method();
 188 #elif !defined(NO_SSL3)
 189         meth=SSLv3_client_method();
 190 #elif !defined(NO_SSL2)
 191         meth=SSLv2_client_method();
 192 #endif
 193
 194         apps_startup();
 195         c_Pause=0;
 196         c_quiet=0;
 197         c_ign_eof=0;
 198         c_debug=0;
 199         c_showcerts=0;
 200
 201         if (bio_err == NULL)
 202                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 203
 204         if (    ((cbuf=Malloc(BUFSIZZ)) == NULL) ||
 205                 ((sbuf=Malloc(BUFSIZZ)) == NULL))
 206                 {
 207                 BIO_printf(bio_err,"out of memory\n");
 208                 goto end;
 209                 }
 210
 211         verify_depth=0;
 212         verify_error=X509_V_OK;
 213 #ifdef FIONBIO
 214         c_nbio=0;
 215 #endif
 216
 217         argc--;
 218         argv++;
 219         while (argc >= 1)
 220                 {
 221                 if      (strcmp(*argv,"-host") == 0)
 222                         {
 223                         if (--argc < 1) goto bad;
 224                         host= *(++argv);
 225                         }
 226                 else if (strcmp(*argv,"-port") == 0)
 227                         {
 228                         if (--argc < 1) goto bad;
 229                         port=atoi(*(++argv));
 230                         if (port == 0) goto bad;
 231                         }
 232                 else if (strcmp(*argv,"-connect") == 0)
 233                         {
 234                         if (--argc < 1) goto bad;
 235                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 236                                 goto bad;
 237                         }
 238                 else if (strcmp(*argv,"-verify") == 0)
 239                         {
 240                         verify=SSL_VERIFY_PEER;
 241                         if (--argc < 1) goto bad;
 242                         verify_depth=atoi(*(++argv));
 243                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 244                         }
 245                 else if (strcmp(*argv,"-cert") == 0)
 246                         {
 247                         if (--argc < 1) goto bad;
 248                         cert_file= *(++argv);
 249                         }
 250                 else if (strcmp(*argv,"-prexit") == 0)
 251                         prexit=1;
 252                 else if (strcmp(*argv,"-crlf") == 0)
 253                         crlf=1;
 254                 else if (strcmp(*argv,"-quiet") == 0)
 255                         {
 256                         c_quiet=1;
 257                         c_ign_eof=1;
 258                         }
 259                 else if (strcmp(*argv,"-ign_eof") == 0)
 260                         c_ign_eof=1;
 261                 else if (strcmp(*argv,"-pause") == 0)
 262                         c_Pause=1;
 263                 else if (strcmp(*argv,"-debug") == 0)
 264                         c_debug=1;
 265                 else if (strcmp(*argv,"-showcerts") == 0)
 266                         c_showcerts=1;
 267                 else if (strcmp(*argv,"-nbio_test") == 0)
 268                         nbio_test=1;
 269                 else if (strcmp(*argv,"-state") == 0)
 270                         state=1;
 271 #ifndef NO_SSL2
 272                 else if (strcmp(*argv,"-ssl2") == 0)
 273                         meth=SSLv2_client_method();
 274 #endif
 275 #ifndef NO_SSL3
 276                 else if (strcmp(*argv,"-ssl3") == 0)
 277                         meth=SSLv3_client_method();
 278 #endif
 279 #ifndef NO_TLS1
 280                 else if (strcmp(*argv,"-tls1") == 0)
 281                         meth=TLSv1_client_method();
 282 #endif
 283                 else if (strcmp(*argv,"-bugs") == 0)
 284                         bugs=1;
 285                 else if (strcmp(*argv,"-key") == 0)
 286                         {
 287                         if (--argc < 1) goto bad;
 288                         key_file= *(++argv);
 289                         }
 290                 else if (strcmp(*argv,"-reconnect") == 0)
 291                         {
 292                         reconnect=5;
 293                         }
 294                 else if (strcmp(*argv,"-CApath") == 0)
 295                         {
 296                         if (--argc < 1) goto bad;
 297                         CApath= *(++argv);
 298                         }
 299                 else if (strcmp(*argv,"-CAfile") == 0)
 300                         {
 301                         if (--argc < 1) goto bad;
 302                         CAfile= *(++argv);
 303                         }
 304                 else if (strcmp(*argv,"-no_tls1") == 0)
 305                         off|=SSL_OP_NO_TLSv1;
 306                 else if (strcmp(*argv,"-no_ssl3") == 0)
 307                         off|=SSL_OP_NO_SSLv3;
 308                 else if (strcmp(*argv,"-no_ssl2") == 0)
 309                         off|=SSL_OP_NO_SSLv2;
 310                 else if (strcmp(*argv,"-cipher") == 0)
 311                         {
 312                         if (--argc < 1) goto bad;
 313                         cipher= *(++argv);
 314                         }
 315 #ifdef FIONBIO
 316                 else if (strcmp(*argv,"-nbio") == 0)
 317                         { c_nbio=1; }
 318 #endif
 319                 else
 320                         {
 321                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 322                         badop=1;
 323                         break;
 324                         }
 325                 argc--;
 326                 argv++;
 327                 }
 328         if (badop)
 329                 {
 330 bad:
 331                 sc_usage();
 332                 goto end;
 333                 }
 334
 335         app_RAND_load_file(NULL, bio_err, 0);
 336
 337         if (bio_c_out == NULL)
 338                 {
 339                 if (c_quiet)
 340                         {
 341                         bio_c_out=BIO_new(BIO_s_null());
 342                         }
 343                 else
 344                         {
 345                         if (bio_c_out == NULL)
 346                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 347                         }
 348                 }
 349
 350         OpenSSL_add_ssl_algorithms();
 351         SSL_load_error_strings();
 352         ctx=SSL_CTX_new(meth);
 353         if (ctx == NULL)
 354                 {
 355                 ERR_print_errors(bio_err);
 356                 goto end;
 357                 }
 358
 359         if (bugs)
 360                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 361         else
 362                 SSL_CTX_set_options(ctx,off);
 363
 364         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 365         if (cipher != NULL)
 366                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
 367                 BIO_printf(bio_err,"error setting cipher list\n");
 368                 ERR_print_errors(bio_err);
 369                 goto end;
 370         }
 371 #if 0
 372         else
 373                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 374 #endif
 375
 376         SSL_CTX_set_verify(ctx,verify,verify_callback);
 377         if (!set_cert_stuff(ctx,cert_file,key_file))
 378                 goto end;
 379
 380         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 381                 (!SSL_CTX_set_default_verify_paths(ctx)))
 382                 {
 383                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
 384                 ERR_print_errors(bio_err);
 385                 /* goto end; */
 386                 }
 387
 388
 389         con=SSL_new(ctx);
 390 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 391
 392 re_start:
 393
 394         if (init_client(&s,host,port) == 0)
 395                 {
 396                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 397                 SHUTDOWN(s);
 398                 goto end;
 399                 }
 400         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 401
 402 #ifdef FIONBIO
 403         if (c_nbio)
 404                 {
 405                 unsigned long l=1;
 406                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 407                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 408                         {
 409                         ERR_print_errors(bio_err);
 410                         goto end;
 411                         }
 412                 }
 413 #endif
 414         if (c_Pause & 0x01) con->debug=1;
 415         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 416
 417         if (nbio_test)
 418                 {
 419                 BIO *test;
 420
 421                 test=BIO_new(BIO_f_nbio_test());
 422                 sbio=BIO_push(test,sbio);
 423                 }
 424
 425         if (c_debug)
 426                 {
 427                 con->debug=1;
 428                 BIO_set_callback(sbio,bio_dump_cb);
 429                 BIO_set_callback_arg(sbio,bio_c_out);
 430                 }
 431
 432         SSL_set_bio(con,sbio,sbio);
 433         SSL_set_connect_state(con);
 434
 435         /* ok, lets connect */
 436         width=SSL_get_fd(con)+1;
 437
 438         read_tty=1;
 439         write_tty=0;
 440         tty_on=0;
 441         read_ssl=1;
 442         write_ssl=1;
 443
 444         cbuf_len=0;
 445         cbuf_off=0;
 446         sbuf_len=0;
 447         sbuf_off=0;
 448
 449         for (;;)
 450                 {
 451                 FD_ZERO(&readfds);
 452                 FD_ZERO(&writefds);
 453
 454                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
 455                         {
 456                         in_init=1;
 457                         tty_on=0;
 458                         }
 459                 else
 460                         {
 461                         tty_on=1;
 462                         if (in_init)
 463                                 {
 464                                 in_init=0;
 465                                 print_stuff(bio_c_out,con,full_log);
 466                                 if (full_log > 0) full_log--;
 467
 468                                 if (reconnect)
 469                                         {
 470                                         reconnect--;
 471                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
 472                                         SSL_shutdown(con);
 473                                         SSL_set_connect_state(con);
 474                                         SHUTDOWN(SSL_get_fd(con));
 475                                         goto re_start;
 476                                         }
 477                                 }
 478                         }
 479
 480                 ssl_pending = read_ssl && SSL_pending(con);
 481
 482                 if (!ssl_pending)
 483                         {
 484 #ifndef WINDOWS
 485                         if (tty_on)
 486                                 {
 487                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
 488                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
 489                                 }
 490                         if (read_ssl)
 491                                 FD_SET(SSL_get_fd(con),&readfds);
 492                         if (write_ssl)
 493                                 FD_SET(SSL_get_fd(con),&writefds);
 494 #else
 495                         if(!tty_on || !write_tty) {
 496                                 if (read_ssl)
 497                                         FD_SET(SSL_get_fd(con),&readfds);
 498                                 if (write_ssl)
 499                                         FD_SET(SSL_get_fd(con),&writefds);
 500                         }
 501 #endif
 502 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
 503                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 504
 505                         /* Note: under VMS with SOCKETSHR the second parameter
 506                          * is currently of type (int *) whereas under other
 507                          * systems it is (void *) if you don't have a cast it
 508                          * will choke the compiler: if you do have a cast then
 509                          * you can either go for (int *) or (void *).
 510                          */
 511 #ifdef WINDOWS
 512                         /* Under Windows we make the assumption that we can
 513                          * always write to the tty: therefore if we need to
 514                          * write to the tty we just fall through. Otherwise
 515                          * we timeout the select every second and see if there
 516                          * are any keypresses. Note: this is a hack, in a proper
 517                          * Windows application we wouldn't do this.
 518                          */
 519                         i=0;
 520                         if(!write_tty) {
 521                                 if(read_tty) {
 522                                         tv.tv_sec = 1;
 523                                         tv.tv_usec = 0;
 524                                         i=select(width,(void *)&readfds,(void *)&writefds,
 525                                                  NULL,&tv);
 526                                         if(!i && (!_kbhit() || !read_tty) ) continue;
 527                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
 528                                          NULL,NULL);
 529                         }
 530 #else
 531                         i=select(width,(void *)&readfds,(void *)&writefds,
 532                                  NULL,NULL);
 533 #endif
 534                         if ( i < 0)
 535                                 {
 536                                 BIO_printf(bio_err,"bad select %d\n",
 537                                 get_last_socket_error());
 538                                 goto shut;
 539                                 /* goto end; */
 540                                 }
 541                         }
 542
 543                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
 544                         {
 545                         k=SSL_write(con,&(cbuf[cbuf_off]),
 546                                 (unsigned int)cbuf_len);
 547                         switch (SSL_get_error(con,k))
 548                                 {
 549                         case SSL_ERROR_NONE:
 550                                 cbuf_off+=k;
 551                                 cbuf_len-=k;
 552                                 if (k <= 0) goto end;
 553                                 /* we have done a  write(con,NULL,0); */
 554                                 if (cbuf_len <= 0)
 555                                         {
 556                                         read_tty=1;
 557                                         write_ssl=0;
 558                                         }
 559                                 else /* if (cbuf_len > 0) */
 560                                         {
 561                                         read_tty=0;
 562                                         write_ssl=1;
 563                                         }
 564                                 break;
 565                         case SSL_ERROR_WANT_WRITE:
 566                                 BIO_printf(bio_c_out,"write W BLOCK\n");
 567                                 write_ssl=1;
 568                                 read_tty=0;
 569                                 break;
 570                         case SSL_ERROR_WANT_READ:
 571                                 BIO_printf(bio_c_out,"write R BLOCK\n");
 572                                 write_tty=0;
 573                                 read_ssl=1;
 574                                 write_ssl=0;
 575                                 break;
 576                         case SSL_ERROR_WANT_X509_LOOKUP:
 577                                 BIO_printf(bio_c_out,"write X BLOCK\n");
 578                                 break;
 579                         case SSL_ERROR_ZERO_RETURN:
 580                                 if (cbuf_len != 0)
 581                                         {
 582                                         BIO_printf(bio_c_out,"shutdown\n");
 583                                         goto shut;
 584                                         }
 585                                 else
 586                                         {
 587                                         read_tty=1;
 588                                         write_ssl=0;
 589                                         break;
 590                                         }
 591
 592                         case SSL_ERROR_SYSCALL:
 593                                 if ((k != 0) || (cbuf_len != 0))
 594                                         {
 595                                         BIO_printf(bio_err,"write:errno=%d\n",
 596                                                 get_last_socket_error());
 597                                         goto shut;
 598                                         }
 599                                 else
 600                                         {
 601                                         read_tty=1;
 602                                         write_ssl=0;
 603                                         }
 604                                 break;
 605                         case SSL_ERROR_SSL:
 606                                 ERR_print_errors(bio_err);
 607                                 goto shut;
 608                                 }
 609                         }
 610 #ifdef WINDOWS
 611                 /* Assume Windows can always write */
 612                 else if (!ssl_pending && write_tty)
 613 #else
 614                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
 615 #endif
 616                         {
 617 #ifdef CHARSET_EBCDIC
 618                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
 619 #endif
 620                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
 621
 622                         if (i <= 0)
 623                                 {
 624                                 BIO_printf(bio_c_out,"DONE\n");
 625                                 goto shut;
 626                                 /* goto end; */
 627                                 }
 628
 629                         sbuf_len-=i;;
 630                         sbuf_off+=i;
 631                         if (sbuf_len <= 0)
 632                                 {
 633                                 read_ssl=1;
 634                                 write_tty=0;
 635                                 }
 636                         }
 637                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
 638                         {
 639 #ifdef RENEG
 640 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
 641 #endif
 642 #if 1
 643                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
 644 #else
 645 /* Demo for pending and peek :-) */
 646                         k=SSL_read(con,sbuf,16);
 647 { char zbuf[10240];
 648 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
 649 }
 650 #endif
 651
 652                         switch (SSL_get_error(con,k))
 653                                 {
 654                         case SSL_ERROR_NONE:
 655                                 if (k <= 0)
 656                                         goto end;
 657                                 sbuf_off=0;
 658                                 sbuf_len=k;
 659
 660                                 read_ssl=0;
 661                                 write_tty=1;
 662                                 break;
 663                         case SSL_ERROR_WANT_WRITE:
 664                                 BIO_printf(bio_c_out,"read W BLOCK\n");
 665                                 write_ssl=1;
 666                                 read_tty=0;
 667                                 break;
 668                         case SSL_ERROR_WANT_READ:
 669                                 BIO_printf(bio_c_out,"read R BLOCK\n");
 670                                 write_tty=0;
 671                                 read_ssl=1;
 672                                 if ((read_tty == 0) && (write_ssl == 0))
 673                                         write_ssl=1;
 674                                 break;
 675                         case SSL_ERROR_WANT_X509_LOOKUP:
 676                                 BIO_printf(bio_c_out,"read X BLOCK\n");
 677                                 break;
 678                         case SSL_ERROR_SYSCALL:
 679                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
 680                                 goto shut;
 681                         case SSL_ERROR_ZERO_RETURN:
 682                                 BIO_printf(bio_c_out,"closed\n");
 683                                 goto shut;
 684                         case SSL_ERROR_SSL:
 685                                 ERR_print_errors(bio_err);
 686                                 goto shut;
 687                                 /* break; */
 688                                 }
 689                         }
 690
 691 #ifdef WINDOWS
 692                 else if (_kbhit())
 693 #else
 694                 else if (FD_ISSET(fileno(stdin),&readfds))
 695 #endif
 696                         {
 697                         if (crlf)
 698                                 {
 699                                 int j, lf_num;
 700
 701                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
 702                                 lf_num = 0;
 703                                 /* both loops are skipped when i <= 0 */
 704                                 for (j = 0; j < i; j++)
 705                                         if (cbuf[j] == '\n')
 706                                                 lf_num++;
 707                                 for (j = i-1; j >= 0; j--)
 708                                         {
 709                                         cbuf[j+lf_num] = cbuf[j];
 710                                         if (cbuf[j] == '\n')
 711                                                 {
 712                                                 lf_num--;
 713                                                 i++;
 714                                                 cbuf[j+lf_num] = '\r';
 715                                                 }
 716                                         }
 717                                 assert(lf_num == 0);
 718                                 }
 719                         else
 720                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
 721
 722                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
 723                                 {
 724                                 BIO_printf(bio_err,"DONE\n");
 725                                 goto shut;
 726                                 }
 727
 728                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
 729                                 {
 730                                 BIO_printf(bio_err,"RENEGOTIATING\n");
 731                                 SSL_renegotiate(con);
 732                                 cbuf_len=0;
 733                                 }
 734                         else
 735                                 {
 736                                 cbuf_len=i;
 737                                 cbuf_off=0;
 738 #ifdef CHARSET_EBCDIC
 739                                 ebcdic2ascii(cbuf, cbuf, i);
 740 #endif
 741                                 }
 742
 743                         write_ssl=1;
 744                         read_tty=0;
 745                         }
 746                 }
 747 shut:
 748         SSL_shutdown(con);
 749         SHUTDOWN(SSL_get_fd(con));
 750         ret=0;
 751 end:
 752         if(prexit) print_stuff(bio_c_out,con,1);
 753         if (con != NULL) SSL_free(con);
 754         if (con2 != NULL) SSL_free(con2);
 755         if (ctx != NULL) SSL_CTX_free(ctx);
 756         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); Free(cbuf); }
 757         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); Free(sbuf); }
 758         if (bio_c_out != NULL)
 759                 {
 760                 BIO_free(bio_c_out);
 761                 bio_c_out=NULL;
 762                 }
 763         EXIT(ret);
 764         }
 765
 766
 767 static void print_stuff(BIO *bio, SSL *s, int full)
 768         {
 769         X509 *peer=NULL;
 770         char *p;
 771         static char *space="                ";
 772         char buf[BUFSIZ];
 773         STACK_OF(X509) *sk;
 774         STACK_OF(X509_NAME) *sk2;
 775         SSL_CIPHER *c;
 776         X509_NAME *xn;
 777         int j,i;
 778
 779         if (full)
 780                 {
 781                 int got_a_chain = 0;
 782
 783                 sk=SSL_get_peer_cert_chain(s);
 784                 if (sk != NULL)
 785                         {
 786                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
 787
 788                         BIO_printf(bio,"---\nCertificate chain\n");
 789                         for (i=0; i<sk_X509_num(sk); i++)
 790                                 {
 791                                 X509_NAME_oneline(X509_get_subject_name(
 792                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 793                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
 794                                 X509_NAME_oneline(X509_get_issuer_name(
 795                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 796                                 BIO_printf(bio,"   i:%s\n",buf);
 797                                 if (c_showcerts)
 798                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
 799                                 }
 800                         }
 801
 802                 BIO_printf(bio,"---\n");
 803                 peer=SSL_get_peer_certificate(s);
 804                 if (peer != NULL)
 805                         {
 806                         BIO_printf(bio,"Server certificate\n");
 807                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
 808                                 PEM_write_bio_X509(bio,peer);
 809                         X509_NAME_oneline(X509_get_subject_name(peer),
 810                                 buf,BUFSIZ);
 811                         BIO_printf(bio,"subject=%s\n",buf);
 812                         X509_NAME_oneline(X509_get_issuer_name(peer),
 813                                 buf,BUFSIZ);
 814                         BIO_printf(bio,"issuer=%s\n",buf);
 815                         }
 816                 else
 817                         BIO_printf(bio,"no peer certificate available\n");
 818
 819                 sk2=SSL_get_client_CA_list(s);
 820                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
 821                         {
 822                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
 823                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
 824                                 {
 825                                 xn=sk_X509_NAME_value(sk2,i);
 826                                 X509_NAME_oneline(xn,buf,sizeof(buf));
 827                                 BIO_write(bio,buf,strlen(buf));
 828                                 BIO_write(bio,"\n",1);
 829                                 }
 830                         }
 831                 else
 832                         {
 833                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
 834                         }
 835                 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
 836                 if (p != NULL)
 837                         {
 838                         /* This works only for SSL 2.  In later protocol
 839                          * versions, the client does not know what other
 840                          * ciphers (in addition to the one to be used
 841                          * in the current connection) the server supports. */
 842
 843                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
 844                         j=i=0;
 845                         while (*p)
 846                                 {
 847                                 if (*p == ':')
 848                                         {
 849                                         BIO_write(bio,space,15-j%25);
 850                                         i++;
 851                                         j=0;
 852                                         BIO_write(bio,((i%3)?" ":"\n"),1);
 853                                         }
 854                                 else
 855                                         {
 856                                         BIO_write(bio,p,1);
 857                                         j++;
 858                                         }
 859                                 p++;
 860                                 }
 861                         BIO_write(bio,"\n",1);
 862                         }
 863
 864                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
 865                         BIO_number_read(SSL_get_rbio(s)),
 866                         BIO_number_written(SSL_get_wbio(s)));
 867                 }
 868         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
 869         c=SSL_get_current_cipher(s);
 870         BIO_printf(bio,"%s, Cipher is %s\n",
 871                 SSL_CIPHER_get_version(c),
 872                 SSL_CIPHER_get_name(c));
 873         if (peer != NULL) {
 874                 EVP_PKEY *pktmp;
 875                 pktmp = X509_get_pubkey(peer);
 876                 BIO_printf(bio,"Server public key is %d bit\n",
 877                                                          EVP_PKEY_bits(pktmp));
 878                 EVP_PKEY_free(pktmp);
 879         }
 880         SSL_SESSION_print(bio,SSL_get_session(s));
 881         BIO_printf(bio,"---\n");
 882         if (peer != NULL)
 883                 X509_free(peer);
 884         }
 885