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 <openssl/engine.h>
  83 #include "s_apps.h"
  84
  85 #ifdef WINDOWS
  86 #include <conio.h>
  87 #endif
  88
  89
  90 #if (defined(VMS) && __VMS_VER < 70000000)
  91 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
  92 #undef FIONBIO
  93 #endif
  94
  95 #undef PROG
  96 #define PROG    s_client_main
  97
  98 /*#define SSL_HOST_NAME "www.netscape.com" */
  99 /*#define SSL_HOST_NAME "193.118.187.102" */
 100 #define SSL_HOST_NAME   "localhost"
 101
 102 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 103
 104 #undef BUFSIZZ
 105 #define BUFSIZZ 1024*8
 106
 107 extern int verify_depth;
 108 extern int verify_error;
 109
 110 #ifdef FIONBIO
 111 static int c_nbio=0;
 112 #endif
 113 static int c_Pause=0;
 114 static int c_debug=0;
 115 static int c_showcerts=0;
 116
 117 static void sc_usage(void);
 118 static void print_stuff(BIO *berr,SSL *con,int full);
 119 static BIO *bio_c_out=NULL;
 120 static int c_quiet=0;
 121 static int c_ign_eof=0;
 122
 123 static void sc_usage(void)
 124         {
 125         BIO_printf(bio_err,"usage: s_client args\n");
 126         BIO_printf(bio_err,"\n");
 127         BIO_printf(bio_err," -host host     - use -connect instead\n");
 128         BIO_printf(bio_err," -port port     - use -connect instead\n");
 129         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 130
 131         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 132         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 133         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
 134         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 135         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 136         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 137         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 138         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 139         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 140         BIO_printf(bio_err," -debug        - extra output\n");
 141         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 142         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 143 #ifdef FIONBIO
 144         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 145 #endif
 146         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 147         BIO_printf(bio_err," -quiet        - no s_client output\n");
 148         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 149         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 150         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 151         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 152         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 153         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 154         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 155         BIO_printf(bio_err,"                 command to see what is available\n");
 156         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 157
 158         }
 159
 160 int MAIN(int, char **);
 161
 162 int MAIN(int argc, char **argv)
 163         {
 164         int off=0;
 165         SSL *con=NULL,*con2=NULL;
 166         int s,k,width,state=0;
 167         char *cbuf=NULL,*sbuf=NULL;
 168         int cbuf_len,cbuf_off;
 169         int sbuf_len,sbuf_off;
 170         fd_set readfds,writefds;
 171         short port=PORT;
 172         int full_log=1;
 173         char *host=SSL_HOST_NAME;
 174         char *cert_file=NULL,*key_file=NULL;
 175         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 176         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 177         int crlf=0;
 178         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 179         SSL_CTX *ctx=NULL;
 180         int ret=1,in_init=1,i,nbio_test=0;
 181         int prexit = 0;
 182         SSL_METHOD *meth=NULL;
 183         BIO *sbio;
 184         char *engine_id=NULL;
 185         ENGINE *e=NULL;
 186 #ifdef WINDOWS
 187         struct timeval tv;
 188 #endif
 189
 190 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 191         meth=SSLv23_client_method();
 192 #elif !defined(NO_SSL3)
 193         meth=SSLv3_client_method();
 194 #elif !defined(NO_SSL2)
 195         meth=SSLv2_client_method();
 196 #endif
 197
 198         apps_startup();
 199         c_Pause=0;
 200         c_quiet=0;
 201         c_ign_eof=0;
 202         c_debug=0;
 203         c_showcerts=0;
 204
 205         if (bio_err == NULL)
 206                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 207
 208         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 209                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 210                 {
 211                 BIO_printf(bio_err,"out of memory\n");
 212                 goto end;
 213                 }
 214
 215         verify_depth=0;
 216         verify_error=X509_V_OK;
 217 #ifdef FIONBIO
 218         c_nbio=0;
 219 #endif
 220
 221         argc--;
 222         argv++;
 223         while (argc >= 1)
 224                 {
 225                 if      (strcmp(*argv,"-host") == 0)
 226                         {
 227                         if (--argc < 1) goto bad;
 228                         host= *(++argv);
 229                         }
 230                 else if (strcmp(*argv,"-port") == 0)
 231                         {
 232                         if (--argc < 1) goto bad;
 233                         port=atoi(*(++argv));
 234                         if (port == 0) goto bad;
 235                         }
 236                 else if (strcmp(*argv,"-connect") == 0)
 237                         {
 238                         if (--argc < 1) goto bad;
 239                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 240                                 goto bad;
 241                         }
 242                 else if (strcmp(*argv,"-verify") == 0)
 243                         {
 244                         verify=SSL_VERIFY_PEER;
 245                         if (--argc < 1) goto bad;
 246                         verify_depth=atoi(*(++argv));
 247                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 248                         }
 249                 else if (strcmp(*argv,"-cert") == 0)
 250                         {
 251                         if (--argc < 1) goto bad;
 252                         cert_file= *(++argv);
 253                         }
 254                 else if (strcmp(*argv,"-prexit") == 0)
 255                         prexit=1;
 256                 else if (strcmp(*argv,"-crlf") == 0)
 257                         crlf=1;
 258                 else if (strcmp(*argv,"-quiet") == 0)
 259                         {
 260                         c_quiet=1;
 261                         c_ign_eof=1;
 262                         }
 263                 else if (strcmp(*argv,"-ign_eof") == 0)
 264                         c_ign_eof=1;
 265                 else if (strcmp(*argv,"-pause") == 0)
 266                         c_Pause=1;
 267                 else if (strcmp(*argv,"-debug") == 0)
 268                         c_debug=1;
 269                 else if (strcmp(*argv,"-showcerts") == 0)
 270                         c_showcerts=1;
 271                 else if (strcmp(*argv,"-nbio_test") == 0)
 272                         nbio_test=1;
 273                 else if (strcmp(*argv,"-state") == 0)
 274                         state=1;
 275 #ifndef NO_SSL2
 276                 else if (strcmp(*argv,"-ssl2") == 0)
 277                         meth=SSLv2_client_method();
 278 #endif
 279 #ifndef NO_SSL3
 280                 else if (strcmp(*argv,"-ssl3") == 0)
 281                         meth=SSLv3_client_method();
 282 #endif
 283 #ifndef NO_TLS1
 284                 else if (strcmp(*argv,"-tls1") == 0)
 285                         meth=TLSv1_client_method();
 286 #endif
 287                 else if (strcmp(*argv,"-bugs") == 0)
 288                         bugs=1;
 289                 else if (strcmp(*argv,"-key") == 0)
 290                         {
 291                         if (--argc < 1) goto bad;
 292                         key_file= *(++argv);
 293                         }
 294                 else if (strcmp(*argv,"-reconnect") == 0)
 295                         {
 296                         reconnect=5;
 297                         }
 298                 else if (strcmp(*argv,"-CApath") == 0)
 299                         {
 300                         if (--argc < 1) goto bad;
 301                         CApath= *(++argv);
 302                         }
 303                 else if (strcmp(*argv,"-CAfile") == 0)
 304                         {
 305                         if (--argc < 1) goto bad;
 306                         CAfile= *(++argv);
 307                         }
 308                 else if (strcmp(*argv,"-no_tls1") == 0)
 309                         off|=SSL_OP_NO_TLSv1;
 310                 else if (strcmp(*argv,"-no_ssl3") == 0)
 311                         off|=SSL_OP_NO_SSLv3;
 312                 else if (strcmp(*argv,"-no_ssl2") == 0)
 313                         off|=SSL_OP_NO_SSLv2;
 314                 else if (strcmp(*argv,"-cipher") == 0)
 315                         {
 316                         if (--argc < 1) goto bad;
 317                         cipher= *(++argv);
 318                         }
 319 #ifdef FIONBIO
 320                 else if (strcmp(*argv,"-nbio") == 0)
 321                         { c_nbio=1; }
 322 #endif
 323                 else if (strcmp(*argv,"-engine") == 0)
 324                         {
 325                         if (--argc < 1) goto bad;
 326                         engine_id = *(++argv);
 327                         }
 328                 else
 329                         {
 330                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 331                         badop=1;
 332                         break;
 333                         }
 334                 argc--;
 335                 argv++;
 336                 }
 337         if (badop)
 338                 {
 339 bad:
 340                 sc_usage();
 341                 goto end;
 342                 }
 343
 344         app_RAND_load_file(NULL, bio_err, 0);
 345
 346         if (bio_c_out == NULL)
 347                 {
 348                 if (c_quiet)
 349                         {
 350                         bio_c_out=BIO_new(BIO_s_null());
 351                         }
 352                 else
 353                         {
 354                         if (bio_c_out == NULL)
 355                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 356                         }
 357                 }
 358
 359         OpenSSL_add_ssl_algorithms();
 360         SSL_load_error_strings();
 361
 362         if (engine_id != NULL)
 363                 {
 364                 if((e = ENGINE_by_id(engine_id)) == NULL)
 365                         {
 366                         BIO_printf(bio_err,"invalid engine\n");
 367                         ERR_print_errors(bio_err);
 368                         goto end;
 369                         }
 370                 if (c_debug)
 371                         {
 372                         ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM,
 373                                 0, bio_err, 0);
 374                         }
 375                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
 376                         {
 377                         BIO_printf(bio_err,"can't use that engine\n");
 378                         ERR_print_errors(bio_err);
 379                         goto end;
 380                         }
 381                 BIO_printf(bio_err,"engine \"%s\" set.\n", engine_id);
 382                 ENGINE_free(e);
 383                 }
 384
 385         ctx=SSL_CTX_new(meth);
 386         if (ctx == NULL)
 387                 {
 388                 ERR_print_errors(bio_err);
 389                 goto end;
 390                 }
 391
 392         if (bugs)
 393                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 394         else
 395                 SSL_CTX_set_options(ctx,off);
 396
 397         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 398         if (cipher != NULL)
 399                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
 400                 BIO_printf(bio_err,"error setting cipher list\n");
 401                 ERR_print_errors(bio_err);
 402                 goto end;
 403         }
 404 #if 0
 405         else
 406                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 407 #endif
 408
 409         SSL_CTX_set_verify(ctx,verify,verify_callback);
 410         if (!set_cert_stuff(ctx,cert_file,key_file))
 411                 goto end;
 412
 413         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 414                 (!SSL_CTX_set_default_verify_paths(ctx)))
 415                 {
 416                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
 417                 ERR_print_errors(bio_err);
 418                 /* goto end; */
 419                 }
 420
 421
 422         con=SSL_new(ctx);
 423 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 424
 425 re_start:
 426
 427         if (init_client(&s,host,port) == 0)
 428                 {
 429                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 430                 SHUTDOWN(s);
 431                 goto end;
 432                 }
 433         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 434
 435 #ifdef FIONBIO
 436         if (c_nbio)
 437                 {
 438                 unsigned long l=1;
 439                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 440                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 441                         {
 442                         ERR_print_errors(bio_err);
 443                         goto end;
 444                         }
 445                 }
 446 #endif
 447         if (c_Pause & 0x01) con->debug=1;
 448         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 449
 450         if (nbio_test)
 451                 {
 452                 BIO *test;
 453
 454                 test=BIO_new(BIO_f_nbio_test());
 455                 sbio=BIO_push(test,sbio);
 456                 }
 457
 458         if (c_debug)
 459                 {
 460                 con->debug=1;
 461                 BIO_set_callback(sbio,bio_dump_cb);
 462                 BIO_set_callback_arg(sbio,bio_c_out);
 463                 }
 464
 465         SSL_set_bio(con,sbio,sbio);
 466         SSL_set_connect_state(con);
 467
 468         /* ok, lets connect */
 469         width=SSL_get_fd(con)+1;
 470
 471         read_tty=1;
 472         write_tty=0;
 473         tty_on=0;
 474         read_ssl=1;
 475         write_ssl=1;
 476
 477         cbuf_len=0;
 478         cbuf_off=0;
 479         sbuf_len=0;
 480         sbuf_off=0;
 481
 482         for (;;)
 483                 {
 484                 FD_ZERO(&readfds);
 485                 FD_ZERO(&writefds);
 486
 487                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
 488                         {
 489                         in_init=1;
 490                         tty_on=0;
 491                         }
 492                 else
 493                         {
 494                         tty_on=1;
 495                         if (in_init)
 496                                 {
 497                                 in_init=0;
 498                                 print_stuff(bio_c_out,con,full_log);
 499                                 if (full_log > 0) full_log--;
 500
 501                                 if (reconnect)
 502                                         {
 503                                         reconnect--;
 504                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
 505                                         SSL_shutdown(con);
 506                                         SSL_set_connect_state(con);
 507                                         SHUTDOWN(SSL_get_fd(con));
 508                                         goto re_start;
 509                                         }
 510                                 }
 511                         }
 512
 513                 ssl_pending = read_ssl && SSL_pending(con);
 514
 515                 if (!ssl_pending)
 516                         {
 517 #ifndef WINDOWS
 518                         if (tty_on)
 519                                 {
 520                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
 521                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
 522                                 }
 523                         if (read_ssl)
 524                                 FD_SET(SSL_get_fd(con),&readfds);
 525                         if (write_ssl)
 526                                 FD_SET(SSL_get_fd(con),&writefds);
 527 #else
 528                         if(!tty_on || !write_tty) {
 529                                 if (read_ssl)
 530                                         FD_SET(SSL_get_fd(con),&readfds);
 531                                 if (write_ssl)
 532                                         FD_SET(SSL_get_fd(con),&writefds);
 533                         }
 534 #endif
 535 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
 536                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 537
 538                         /* Note: under VMS with SOCKETSHR the second parameter
 539                          * is currently of type (int *) whereas under other
 540                          * systems it is (void *) if you don't have a cast it
 541                          * will choke the compiler: if you do have a cast then
 542                          * you can either go for (int *) or (void *).
 543                          */
 544 #ifdef WINDOWS
 545                         /* Under Windows we make the assumption that we can
 546                          * always write to the tty: therefore if we need to
 547                          * write to the tty we just fall through. Otherwise
 548                          * we timeout the select every second and see if there
 549                          * are any keypresses. Note: this is a hack, in a proper
 550                          * Windows application we wouldn't do this.
 551                          */
 552                         i=0;
 553                         if(!write_tty) {
 554                                 if(read_tty) {
 555                                         tv.tv_sec = 1;
 556                                         tv.tv_usec = 0;
 557                                         i=select(width,(void *)&readfds,(void *)&writefds,
 558                                                  NULL,&tv);
 559                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
 560                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
 561                                          NULL,NULL);
 562                         }
 563 #else
 564                         i=select(width,(void *)&readfds,(void *)&writefds,
 565                                  NULL,NULL);
 566 #endif
 567                         if ( i < 0)
 568                                 {
 569                                 BIO_printf(bio_err,"bad select %d\n",
 570                                 get_last_socket_error());
 571                                 goto shut;
 572                                 /* goto end; */
 573                                 }
 574                         }
 575
 576                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
 577                         {
 578                         k=SSL_write(con,&(cbuf[cbuf_off]),
 579                                 (unsigned int)cbuf_len);
 580                         switch (SSL_get_error(con,k))
 581                                 {
 582                         case SSL_ERROR_NONE:
 583                                 cbuf_off+=k;
 584                                 cbuf_len-=k;
 585                                 if (k <= 0) goto end;
 586                                 /* we have done a  write(con,NULL,0); */
 587                                 if (cbuf_len <= 0)
 588                                         {
 589                                         read_tty=1;
 590                                         write_ssl=0;
 591                                         }
 592                                 else /* if (cbuf_len > 0) */
 593                                         {
 594                                         read_tty=0;
 595                                         write_ssl=1;
 596                                         }
 597                                 break;
 598                         case SSL_ERROR_WANT_WRITE:
 599                                 BIO_printf(bio_c_out,"write W BLOCK\n");
 600                                 write_ssl=1;
 601                                 read_tty=0;
 602                                 break;
 603                         case SSL_ERROR_WANT_READ:
 604                                 BIO_printf(bio_c_out,"write R BLOCK\n");
 605                                 write_tty=0;
 606                                 read_ssl=1;
 607                                 write_ssl=0;
 608                                 break;
 609                         case SSL_ERROR_WANT_X509_LOOKUP:
 610                                 BIO_printf(bio_c_out,"write X BLOCK\n");
 611                                 break;
 612                         case SSL_ERROR_ZERO_RETURN:
 613                                 if (cbuf_len != 0)
 614                                         {
 615                                         BIO_printf(bio_c_out,"shutdown\n");
 616                                         goto shut;
 617                                         }
 618                                 else
 619                                         {
 620                                         read_tty=1;
 621                                         write_ssl=0;
 622                                         break;
 623                                         }
 624
 625                         case SSL_ERROR_SYSCALL:
 626                                 if ((k != 0) || (cbuf_len != 0))
 627                                         {
 628                                         BIO_printf(bio_err,"write:errno=%d\n",
 629                                                 get_last_socket_error());
 630                                         goto shut;
 631                                         }
 632                                 else
 633                                         {
 634                                         read_tty=1;
 635                                         write_ssl=0;
 636                                         }
 637                                 break;
 638                         case SSL_ERROR_SSL:
 639                                 ERR_print_errors(bio_err);
 640                                 goto shut;
 641                                 }
 642                         }
 643 #ifdef WINDOWS
 644                 /* Assume Windows can always write */
 645                 else if (!ssl_pending && write_tty)
 646 #else
 647                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
 648 #endif
 649                         {
 650 #ifdef CHARSET_EBCDIC
 651                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
 652 #endif
 653                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
 654
 655                         if (i <= 0)
 656                                 {
 657                                 BIO_printf(bio_c_out,"DONE\n");
 658                                 goto shut;
 659                                 /* goto end; */
 660                                 }
 661
 662                         sbuf_len-=i;;
 663                         sbuf_off+=i;
 664                         if (sbuf_len <= 0)
 665                                 {
 666                                 read_ssl=1;
 667                                 write_tty=0;
 668                                 }
 669                         }
 670                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
 671                         {
 672 #ifdef RENEG
 673 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
 674 #endif
 675 #if 1
 676                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
 677 #else
 678 /* Demo for pending and peek :-) */
 679                         k=SSL_read(con,sbuf,16);
 680 { char zbuf[10240];
 681 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
 682 }
 683 #endif
 684
 685                         switch (SSL_get_error(con,k))
 686                                 {
 687                         case SSL_ERROR_NONE:
 688                                 if (k <= 0)
 689                                         goto end;
 690                                 sbuf_off=0;
 691                                 sbuf_len=k;
 692
 693                                 read_ssl=0;
 694                                 write_tty=1;
 695                                 break;
 696                         case SSL_ERROR_WANT_WRITE:
 697                                 BIO_printf(bio_c_out,"read W BLOCK\n");
 698                                 write_ssl=1;
 699                                 read_tty=0;
 700                                 break;
 701                         case SSL_ERROR_WANT_READ:
 702                                 BIO_printf(bio_c_out,"read R BLOCK\n");
 703                                 write_tty=0;
 704                                 read_ssl=1;
 705                                 if ((read_tty == 0) && (write_ssl == 0))
 706                                         write_ssl=1;
 707                                 break;
 708                         case SSL_ERROR_WANT_X509_LOOKUP:
 709                                 BIO_printf(bio_c_out,"read X BLOCK\n");
 710                                 break;
 711                         case SSL_ERROR_SYSCALL:
 712                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
 713                                 goto shut;
 714                         case SSL_ERROR_ZERO_RETURN:
 715                                 BIO_printf(bio_c_out,"closed\n");
 716                                 goto shut;
 717                         case SSL_ERROR_SSL:
 718                                 ERR_print_errors(bio_err);
 719                                 goto shut;
 720                                 /* break; */
 721                                 }
 722                         }
 723
 724 #ifdef WINDOWS
 725                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
 726 #else
 727                 else if (FD_ISSET(fileno(stdin),&readfds))
 728 #endif
 729                         {
 730                         if (crlf)
 731                                 {
 732                                 int j, lf_num;
 733
 734                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
 735                                 lf_num = 0;
 736                                 /* both loops are skipped when i <= 0 */
 737                                 for (j = 0; j < i; j++)
 738                                         if (cbuf[j] == '\n')
 739                                                 lf_num++;
 740                                 for (j = i-1; j >= 0; j--)
 741                                         {
 742                                         cbuf[j+lf_num] = cbuf[j];
 743                                         if (cbuf[j] == '\n')
 744                                                 {
 745                                                 lf_num--;
 746                                                 i++;
 747                                                 cbuf[j+lf_num] = '\r';
 748                                                 }
 749                                         }
 750                                 assert(lf_num == 0);
 751                                 }
 752                         else
 753                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
 754
 755                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
 756                                 {
 757                                 BIO_printf(bio_err,"DONE\n");
 758                                 goto shut;
 759                                 }
 760
 761                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
 762                                 {
 763                                 BIO_printf(bio_err,"RENEGOTIATING\n");
 764                                 SSL_renegotiate(con);
 765                                 cbuf_len=0;
 766                                 }
 767                         else
 768                                 {
 769                                 cbuf_len=i;
 770                                 cbuf_off=0;
 771 #ifdef CHARSET_EBCDIC
 772                                 ebcdic2ascii(cbuf, cbuf, i);
 773 #endif
 774                                 }
 775
 776                         write_ssl=1;
 777                         read_tty=0;
 778                         }
 779                 }
 780 shut:
 781         SSL_shutdown(con);
 782         SHUTDOWN(SSL_get_fd(con));
 783         ret=0;
 784 end:
 785         if(prexit) print_stuff(bio_c_out,con,1);
 786         if (con != NULL) SSL_free(con);
 787         if (con2 != NULL) SSL_free(con2);
 788         if (ctx != NULL) SSL_CTX_free(ctx);
 789         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); OPENSSL_free(cbuf); }
 790         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); OPENSSL_free(sbuf); }
 791         if (bio_c_out != NULL)
 792                 {
 793                 BIO_free(bio_c_out);
 794                 bio_c_out=NULL;
 795                 }
 796         EXIT(ret);
 797         }
 798
 799
 800 static void print_stuff(BIO *bio, SSL *s, int full)
 801         {
 802         X509 *peer=NULL;
 803         char *p;
 804         static char *space="                ";
 805         char buf[BUFSIZ];
 806         STACK_OF(X509) *sk;
 807         STACK_OF(X509_NAME) *sk2;
 808         SSL_CIPHER *c;
 809         X509_NAME *xn;
 810         int j,i;
 811
 812         if (full)
 813                 {
 814                 int got_a_chain = 0;
 815
 816                 sk=SSL_get_peer_cert_chain(s);
 817                 if (sk != NULL)
 818                         {
 819                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
 820
 821                         BIO_printf(bio,"---\nCertificate chain\n");
 822                         for (i=0; i<sk_X509_num(sk); i++)
 823                                 {
 824                                 X509_NAME_oneline(X509_get_subject_name(
 825                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 826                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
 827                                 X509_NAME_oneline(X509_get_issuer_name(
 828                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 829                                 BIO_printf(bio,"   i:%s\n",buf);
 830                                 if (c_showcerts)
 831                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
 832                                 }
 833                         }
 834
 835                 BIO_printf(bio,"---\n");
 836                 peer=SSL_get_peer_certificate(s);
 837                 if (peer != NULL)
 838                         {
 839                         BIO_printf(bio,"Server certificate\n");
 840                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
 841                                 PEM_write_bio_X509(bio,peer);
 842                         X509_NAME_oneline(X509_get_subject_name(peer),
 843                                 buf,BUFSIZ);
 844                         BIO_printf(bio,"subject=%s\n",buf);
 845                         X509_NAME_oneline(X509_get_issuer_name(peer),
 846                                 buf,BUFSIZ);
 847                         BIO_printf(bio,"issuer=%s\n",buf);
 848                         }
 849                 else
 850                         BIO_printf(bio,"no peer certificate available\n");
 851
 852                 sk2=SSL_get_client_CA_list(s);
 853                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
 854                         {
 855                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
 856                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
 857                                 {
 858                                 xn=sk_X509_NAME_value(sk2,i);
 859                                 X509_NAME_oneline(xn,buf,sizeof(buf));
 860                                 BIO_write(bio,buf,strlen(buf));
 861                                 BIO_write(bio,"\n",1);
 862                                 }
 863                         }
 864                 else
 865                         {
 866                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
 867                         }
 868                 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
 869                 if (p != NULL)
 870                         {
 871                         /* This works only for SSL 2.  In later protocol
 872                          * versions, the client does not know what other
 873                          * ciphers (in addition to the one to be used
 874                          * in the current connection) the server supports. */
 875
 876                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
 877                         j=i=0;
 878                         while (*p)
 879                                 {
 880                                 if (*p == ':')
 881                                         {
 882                                         BIO_write(bio,space,15-j%25);
 883                                         i++;
 884                                         j=0;
 885                                         BIO_write(bio,((i%3)?" ":"\n"),1);
 886                                         }
 887                                 else
 888                                         {
 889                                         BIO_write(bio,p,1);
 890                                         j++;
 891                                         }
 892                                 p++;
 893                                 }
 894                         BIO_write(bio,"\n",1);
 895                         }
 896
 897                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
 898                         BIO_number_read(SSL_get_rbio(s)),
 899                         BIO_number_written(SSL_get_wbio(s)));
 900                 }
 901         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
 902         c=SSL_get_current_cipher(s);
 903         BIO_printf(bio,"%s, Cipher is %s\n",
 904                 SSL_CIPHER_get_version(c),
 905                 SSL_CIPHER_get_name(c));
 906         if (peer != NULL) {
 907                 EVP_PKEY *pktmp;
 908                 pktmp = X509_get_pubkey(peer);
 909                 BIO_printf(bio,"Server public key is %d bit\n",
 910                                                          EVP_PKEY_bits(pktmp));
 911                 EVP_PKEY_free(pktmp);
 912         }
 913         SSL_SESSION_print(bio,SSL_get_session(s));
 914         BIO_printf(bio,"---\n");
 915         if (peer != NULL)
 916                 X509_free(peer);
 917         }
 918