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