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 #if (defined(VMS) && __VMS_VER < 70000000)
  85 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
  86 #undef FIONBIO
  87 #endif
  88
  89 #if defined(NO_RSA) && !defined(NO_SSL2)
  90 #define NO_SSL2
  91 #endif
  92
  93 #undef PROG
  94 #define PROG    s_client_main
  95
  96 /*#define SSL_HOST_NAME "www.netscape.com" */
  97 /*#define SSL_HOST_NAME "193.118.187.102" */
  98 #define SSL_HOST_NAME   "localhost"
  99
 100 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 101
 102 #undef BUFSIZZ
 103 #define BUFSIZZ 1024*8
 104
 105 extern int verify_depth;
 106 extern int verify_error;
 107
 108 #ifdef FIONBIO
 109 static int c_nbio=0;
 110 #endif
 111 static int c_Pause=0;
 112 static int c_debug=0;
 113 static int c_showcerts=0;
 114
 115 static void sc_usage(void);
 116 static void print_stuff(BIO *berr,SSL *con,int full);
 117 static BIO *bio_c_out=NULL;
 118 static int c_quiet=0;
 119
 120 static void sc_usage(void)
 121         {
 122         BIO_printf(bio_err,"usage: s_client args\n");
 123         BIO_printf(bio_err,"\n");
 124         BIO_printf(bio_err," -host host     - use -connect instead\n");
 125         BIO_printf(bio_err," -port port     - use -connect instead\n");
 126         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 127
 128         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 129         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 130         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
 131         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 132         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 133         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 134         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 135         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 136         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 137         BIO_printf(bio_err," -debug        - extra output\n");
 138         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 139         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 140 #ifdef FIONBIO
 141         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 142 #endif
 143         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 144         BIO_printf(bio_err," -quiet        - no s_client output\n");
 145         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 146         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 147         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 148         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 149         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 150         BIO_printf(bio_err," -cipher       - prefered cipher to use, use the 'openssl ciphers'\n");
 151         BIO_printf(bio_err,"                 command to see what is available\n");
 152
 153         }
 154
 155 int MAIN(int argc, char **argv)
 156         {
 157         int off=0;
 158         SSL *con=NULL,*con2=NULL;
 159         int s,k,width,state=0;
 160         char *cbuf=NULL,*sbuf=NULL;
 161         int cbuf_len,cbuf_off;
 162         int sbuf_len,sbuf_off;
 163         fd_set readfds,writefds;
 164         short port=PORT;
 165         int full_log=1;
 166         char *host=SSL_HOST_NAME;
 167         char *cert_file=NULL,*key_file=NULL;
 168         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 169         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 170         int crlf=0;
 171         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 172         SSL_CTX *ctx=NULL;
 173         int ret=1,in_init=1,i,nbio_test=0;
 174         SSL_METHOD *meth=NULL;
 175         BIO *sbio;
 176         /*static struct timeval timeout={10,0};*/
 177
 178 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 179         meth=SSLv23_client_method();
 180 #elif !defined(NO_SSL3)
 181         meth=SSLv3_client_method();
 182 #elif !defined(NO_SSL2)
 183         meth=SSLv2_client_method();
 184 #endif
 185
 186         apps_startup();
 187         c_Pause=0;
 188         c_quiet=0;
 189         c_debug=0;
 190         c_showcerts=0;
 191
 192         if (bio_err == NULL)
 193                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 194
 195         if (    ((cbuf=Malloc(BUFSIZZ)) == NULL) ||
 196                 ((sbuf=Malloc(BUFSIZZ)) == NULL))
 197                 {
 198                 BIO_printf(bio_err,"out of memory\n");
 199                 goto end;
 200                 }
 201
 202         verify_depth=0;
 203         verify_error=X509_V_OK;
 204 #ifdef FIONBIO
 205         c_nbio=0;
 206 #endif
 207
 208         argc--;
 209         argv++;
 210         while (argc >= 1)
 211                 {
 212                 if      (strcmp(*argv,"-host") == 0)
 213                         {
 214                         if (--argc < 1) goto bad;
 215                         host= *(++argv);
 216                         }
 217                 else if (strcmp(*argv,"-port") == 0)
 218                         {
 219                         if (--argc < 1) goto bad;
 220                         port=atoi(*(++argv));
 221                         if (port == 0) goto bad;
 222                         }
 223                 else if (strcmp(*argv,"-connect") == 0)
 224                         {
 225                         if (--argc < 1) goto bad;
 226                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 227                                 goto bad;
 228                         }
 229                 else if (strcmp(*argv,"-verify") == 0)
 230                         {
 231                         verify=SSL_VERIFY_PEER;
 232                         if (--argc < 1) goto bad;
 233                         verify_depth=atoi(*(++argv));
 234                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 235                         }
 236                 else if (strcmp(*argv,"-cert") == 0)
 237                         {
 238                         if (--argc < 1) goto bad;
 239                         cert_file= *(++argv);
 240                         }
 241                 else if (strcmp(*argv,"-crlf") == 0)
 242                         crlf=1;
 243                 else if (strcmp(*argv,"-quiet") == 0)
 244                         c_quiet=1;
 245                 else if (strcmp(*argv,"-pause") == 0)
 246                         c_Pause=1;
 247                 else if (strcmp(*argv,"-debug") == 0)
 248                         c_debug=1;
 249                 else if (strcmp(*argv,"-showcerts") == 0)
 250                         c_showcerts=1;
 251                 else if (strcmp(*argv,"-nbio_test") == 0)
 252                         nbio_test=1;
 253                 else if (strcmp(*argv,"-state") == 0)
 254                         state=1;
 255 #ifndef NO_SSL2
 256                 else if (strcmp(*argv,"-ssl2") == 0)
 257                         meth=SSLv2_client_method();
 258 #endif
 259 #ifndef NO_SSL3
 260                 else if (strcmp(*argv,"-ssl3") == 0)
 261                         meth=SSLv3_client_method();
 262 #endif
 263 #ifndef NO_TLS1
 264                 else if (strcmp(*argv,"-tls1") == 0)
 265                         meth=TLSv1_client_method();
 266 #endif
 267                 else if (strcmp(*argv,"-bugs") == 0)
 268                         bugs=1;
 269                 else if (strcmp(*argv,"-key") == 0)
 270                         {
 271                         if (--argc < 1) goto bad;
 272                         key_file= *(++argv);
 273                         }
 274                 else if (strcmp(*argv,"-reconnect") == 0)
 275                         {
 276                         reconnect=5;
 277                         }
 278                 else if (strcmp(*argv,"-CApath") == 0)
 279                         {
 280                         if (--argc < 1) goto bad;
 281                         CApath= *(++argv);
 282                         }
 283                 else if (strcmp(*argv,"-CAfile") == 0)
 284                         {
 285                         if (--argc < 1) goto bad;
 286                         CAfile= *(++argv);
 287                         }
 288                 else if (strcmp(*argv,"-no_tls1") == 0)
 289                         off|=SSL_OP_NO_TLSv1;
 290                 else if (strcmp(*argv,"-no_ssl3") == 0)
 291                         off|=SSL_OP_NO_SSLv3;
 292                 else if (strcmp(*argv,"-no_ssl2") == 0)
 293                         off|=SSL_OP_NO_SSLv2;
 294                 else if (strcmp(*argv,"-cipher") == 0)
 295                         {
 296                         if (--argc < 1) goto bad;
 297                         cipher= *(++argv);
 298                         }
 299 #ifdef FIONBIO
 300                 else if (strcmp(*argv,"-nbio") == 0)
 301                         { c_nbio=1; }
 302 #endif
 303                 else
 304                         {
 305                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 306                         badop=1;
 307                         break;
 308                         }
 309                 argc--;
 310                 argv++;
 311                 }
 312         if (badop)
 313                 {
 314 bad:
 315                 sc_usage();
 316                 goto end;
 317                 }
 318
 319         if (bio_c_out == NULL)
 320                 {
 321                 if (c_quiet)
 322                         {
 323                         bio_c_out=BIO_new(BIO_s_null());
 324                         }
 325                 else
 326                         {
 327                         if (bio_c_out == NULL)
 328                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 329                         }
 330                 }
 331
 332         SSLeay_add_ssl_algorithms();
 333         ctx=SSL_CTX_new(meth);
 334         if (ctx == NULL)
 335                 {
 336                 ERR_print_errors(bio_err);
 337                 goto end;
 338                 }
 339
 340         if (bugs)
 341                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 342         else
 343                 SSL_CTX_set_options(ctx,off);
 344
 345         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 346         if (cipher != NULL)
 347                 SSL_CTX_set_cipher_list(ctx,cipher);
 348 #if 0
 349         else
 350                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 351 #endif
 352
 353         SSL_CTX_set_verify(ctx,verify,verify_callback);
 354         if (!set_cert_stuff(ctx,cert_file,key_file))
 355                 goto end;
 356
 357         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 358                 (!SSL_CTX_set_default_verify_paths(ctx)))
 359                 {
 360                 /* BIO_printf(bio_err,"error seting default verify locations\n"); */
 361                 ERR_print_errors(bio_err);
 362                 /* goto end; */
 363                 }
 364
 365         SSL_load_error_strings();
 366
 367         con=(SSL *)SSL_new(ctx);
 368 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 369
 370 re_start:
 371
 372         if (init_client(&s,host,port) == 0)
 373                 {
 374                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 375                 SHUTDOWN(s);
 376                 goto end;
 377                 }
 378         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 379
 380 #ifdef FIONBIO
 381         if (c_nbio)
 382                 {
 383                 unsigned long l=1;
 384                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 385                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 386                         {
 387                         ERR_print_errors(bio_err);
 388                         goto end;
 389                         }
 390                 }
 391 #endif
 392         if (c_Pause & 0x01) con->debug=1;
 393         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 394
 395         if (nbio_test)
 396                 {
 397                 BIO *test;
 398
 399                 test=BIO_new(BIO_f_nbio_test());
 400                 sbio=BIO_push(test,sbio);
 401                 }
 402
 403         if (c_debug)
 404                 {
 405                 con->debug=1;
 406                 BIO_set_callback(sbio,bio_dump_cb);
 407                 BIO_set_callback_arg(sbio,bio_c_out);
 408                 }
 409
 410         SSL_set_bio(con,sbio,sbio);
 411         SSL_set_connect_state(con);
 412
 413         /* ok, lets connect */
 414         width=SSL_get_fd(con)+1;
 415
 416         read_tty=1;
 417         write_tty=0;
 418         tty_on=0;
 419         read_ssl=1;
 420         write_ssl=1;
 421
 422         cbuf_len=0;
 423         cbuf_off=0;
 424         sbuf_len=0;
 425         sbuf_off=0;
 426
 427         for (;;)
 428                 {
 429                 FD_ZERO(&readfds);
 430                 FD_ZERO(&writefds);
 431
 432                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
 433                         {
 434                         in_init=1;
 435                         tty_on=0;
 436                         }
 437                 else
 438                         {
 439                         tty_on=1;
 440                         if (in_init)
 441                                 {
 442                                 in_init=0;
 443                                 print_stuff(bio_c_out,con,full_log);
 444                                 if (full_log > 0) full_log--;
 445
 446                                 if (reconnect)
 447                                         {
 448                                         reconnect--;
 449                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
 450                                         SSL_shutdown(con);
 451                                         SSL_set_connect_state(con);
 452                                         SHUTDOWN(SSL_get_fd(con));
 453                                         goto re_start;
 454                                         }
 455                                 }
 456                         }
 457
 458                 ssl_pending = read_ssl && SSL_pending(con);
 459
 460                 if (!ssl_pending)
 461                         {
 462 #ifndef WINDOWS
 463                         if (tty_on)
 464                                 {
 465                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
 466                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
 467                                 }
 468 #endif
 469                         if (read_ssl)
 470                                 FD_SET(SSL_get_fd(con),&readfds);
 471                         if (write_ssl)
 472                                 FD_SET(SSL_get_fd(con),&writefds);
 473
 474 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
 475                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 476
 477                         /* Note: under VMS with SOCKETSHR the second parameter
 478                          * is currently of type (int *) whereas under other
 479                          * systems it is (void *) if you don't have a cast it
 480                          * will choke the compiler: if you do have a cast then
 481                          * you can either go for (int *) or (void *).
 482                          */
 483                         i=select(width,(void *)&readfds,(void *)&writefds,
 484                                  NULL,NULL);
 485                         if ( i < 0)
 486                                 {
 487                                 BIO_printf(bio_err,"bad select %d\n",
 488                                 get_last_socket_error());
 489                                 goto shut;
 490                                 /* goto end; */
 491                                 }
 492                         }
 493
 494                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
 495                         {
 496                         k=SSL_write(con,&(cbuf[cbuf_off]),
 497                                 (unsigned int)cbuf_len);
 498                         switch (SSL_get_error(con,k))
 499                                 {
 500                         case SSL_ERROR_NONE:
 501                                 cbuf_off+=k;
 502                                 cbuf_len-=k;
 503                                 if (k <= 0) goto end;
 504                                 /* we have done a  write(con,NULL,0); */
 505                                 if (cbuf_len <= 0)
 506                                         {
 507                                         read_tty=1;
 508                                         write_ssl=0;
 509                                         }
 510                                 else /* if (cbuf_len > 0) */
 511                                         {
 512                                         read_tty=0;
 513                                         write_ssl=1;
 514                                         }
 515                                 break;
 516                         case SSL_ERROR_WANT_WRITE:
 517                                 BIO_printf(bio_c_out,"write W BLOCK\n");
 518                                 write_ssl=1;
 519                                 read_tty=0;
 520                                 break;
 521                         case SSL_ERROR_WANT_READ:
 522                                 BIO_printf(bio_c_out,"write R BLOCK\n");
 523                                 write_tty=0;
 524                                 read_ssl=1;
 525                                 write_ssl=0;
 526                                 break;
 527                         case SSL_ERROR_WANT_X509_LOOKUP:
 528                                 BIO_printf(bio_c_out,"write X BLOCK\n");
 529                                 break;
 530                         case SSL_ERROR_ZERO_RETURN:
 531                                 if (cbuf_len != 0)
 532                                         {
 533                                         BIO_printf(bio_c_out,"shutdown\n");
 534                                         goto shut;
 535                                         }
 536                                 else
 537                                         {
 538                                         read_tty=1;
 539                                         write_ssl=0;
 540                                         break;
 541                                         }
 542
 543                         case SSL_ERROR_SYSCALL:
 544                                 if ((k != 0) || (cbuf_len != 0))
 545                                         {
 546                                         BIO_printf(bio_err,"write:errno=%d\n",
 547                                                 get_last_socket_error());
 548                                         goto shut;
 549                                         }
 550                                 else
 551                                         {
 552                                         read_tty=1;
 553                                         write_ssl=0;
 554                                         }
 555                                 break;
 556                         case SSL_ERROR_SSL:
 557                                 ERR_print_errors(bio_err);
 558                                 goto shut;
 559                                 }
 560                         }
 561 #ifndef WINDOWS
 562                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
 563                         {
 564 #ifdef CHARSET_EBCDIC
 565                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
 566 #endif
 567                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
 568
 569                         if (i <= 0)
 570                                 {
 571                                 BIO_printf(bio_c_out,"DONE\n");
 572                                 goto shut;
 573                                 /* goto end; */
 574                                 }
 575
 576                         sbuf_len-=i;;
 577                         sbuf_off+=i;
 578                         if (sbuf_len <= 0)
 579                                 {
 580                                 read_ssl=1;
 581                                 write_tty=0;
 582                                 }
 583                         }
 584 #endif
 585                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
 586                         {
 587 #ifdef RENEG
 588 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
 589 #endif
 590 #if 1
 591                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
 592 #else
 593 /* Demo for pending and peek :-) */
 594                         k=SSL_read(con,sbuf,16);
 595 { char zbuf[10240];
 596 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
 597 }
 598 #endif
 599
 600                         switch (SSL_get_error(con,k))
 601                                 {
 602                         case SSL_ERROR_NONE:
 603                                 if (k <= 0)
 604                                         goto end;
 605                                 sbuf_off=0;
 606                                 sbuf_len=k;
 607
 608                                 read_ssl=0;
 609                                 write_tty=1;
 610                                 break;
 611                         case SSL_ERROR_WANT_WRITE:
 612                                 BIO_printf(bio_c_out,"read W BLOCK\n");
 613                                 write_ssl=1;
 614                                 read_tty=0;
 615                                 break;
 616                         case SSL_ERROR_WANT_READ:
 617                                 BIO_printf(bio_c_out,"read R BLOCK\n");
 618                                 write_tty=0;
 619                                 read_ssl=1;
 620                                 if ((read_tty == 0) && (write_ssl == 0))
 621                                         write_ssl=1;
 622                                 break;
 623                         case SSL_ERROR_WANT_X509_LOOKUP:
 624                                 BIO_printf(bio_c_out,"read X BLOCK\n");
 625                                 break;
 626                         case SSL_ERROR_SYSCALL:
 627                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
 628                                 goto shut;
 629                         case SSL_ERROR_ZERO_RETURN:
 630                                 BIO_printf(bio_c_out,"closed\n");
 631                                 goto shut;
 632                         case SSL_ERROR_SSL:
 633                                 ERR_print_errors(bio_err);
 634                                 goto shut;
 635                                 /* break; */
 636                                 }
 637                         }
 638
 639 #ifndef WINDOWS
 640                 else if (FD_ISSET(fileno(stdin),&readfds))
 641                         {
 642                         if (crlf)
 643                                 {
 644                                 int j, lf_num;
 645
 646                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
 647                                 lf_num = 0;
 648                                 /* both loops are skipped when i <= 0 */
 649                                 for (j = 0; j < i; j++)
 650                                         if (cbuf[j] == '\n')
 651                                                 lf_num++;
 652                                 for (j = i-1; j >= 0; j--)
 653                                         {
 654                                         cbuf[j+lf_num] = cbuf[j];
 655                                         if (cbuf[j] == '\n')
 656                                                 {
 657                                                 lf_num--;
 658                                                 i++;
 659                                                 cbuf[j+lf_num] = '\r';
 660                                                 }
 661                                         }
 662                                 assert(lf_num == 0);
 663                                 }
 664                         else
 665                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
 666
 667                         if ((!c_quiet) && ((i <= 0) || (cbuf[0] == 'Q')))
 668                                 {
 669                                 BIO_printf(bio_err,"DONE\n");
 670                                 goto shut;
 671                                 }
 672
 673                         if ((!c_quiet) && (cbuf[0] == 'R'))
 674                                 {
 675                                 BIO_printf(bio_err,"RENEGOTIATING\n");
 676                                 SSL_renegotiate(con);
 677                                 cbuf_len=0;
 678                                 }
 679                         else
 680                                 {
 681                                 cbuf_len=i;
 682                                 cbuf_off=0;
 683 #ifdef CHARSET_EBCDIC
 684                                 ebcdic2ascii(cbuf, cbuf, i);
 685 #endif
 686                                 }
 687
 688                         write_ssl=1;
 689                         read_tty=0;
 690                         }
 691 #endif
 692                 }
 693 shut:
 694         SSL_shutdown(con);
 695         SHUTDOWN(SSL_get_fd(con));
 696         ret=0;
 697 end:
 698         if (con != NULL) SSL_free(con);
 699         if (con2 != NULL) SSL_free(con2);
 700         if (ctx != NULL) SSL_CTX_free(ctx);
 701         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); Free(cbuf); }
 702         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); Free(sbuf); }
 703         if (bio_c_out != NULL)
 704                 {
 705                 BIO_free(bio_c_out);
 706                 bio_c_out=NULL;
 707                 }
 708         EXIT(ret);
 709         }
 710
 711
 712 static void print_stuff(BIO *bio, SSL *s, int full)
 713         {
 714         X509 *peer=NULL;
 715         char *p;
 716         static char *space="                ";
 717         char buf[BUFSIZ];
 718         STACK_OF(X509) *sk;
 719         STACK_OF(X509_NAME) *sk2;
 720         SSL_CIPHER *c;
 721         X509_NAME *xn;
 722         int j,i;
 723
 724         if (full)
 725                 {
 726                 int got_a_chain = 0;
 727
 728                 sk=SSL_get_peer_cert_chain(s);
 729                 if (sk != NULL)
 730                         {
 731                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
 732
 733                         BIO_printf(bio,"---\nCertificate chain\n");
 734                         for (i=0; i<sk_X509_num(sk); i++)
 735                                 {
 736                                 X509_NAME_oneline(X509_get_subject_name(
 737                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 738                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
 739                                 X509_NAME_oneline(X509_get_issuer_name(
 740                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 741                                 BIO_printf(bio,"   i:%s\n",buf);
 742                                 if (c_showcerts)
 743                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
 744                                 }
 745                         }
 746
 747                 BIO_printf(bio,"---\n");
 748                 peer=SSL_get_peer_certificate(s);
 749                 if (peer != NULL)
 750                         {
 751                         BIO_printf(bio,"Server certificate\n");
 752                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
 753                                 PEM_write_bio_X509(bio,peer);
 754                         X509_NAME_oneline(X509_get_subject_name(peer),
 755                                 buf,BUFSIZ);
 756                         BIO_printf(bio,"subject=%s\n",buf);
 757                         X509_NAME_oneline(X509_get_issuer_name(peer),
 758                                 buf,BUFSIZ);
 759                         BIO_printf(bio,"issuer=%s\n",buf);
 760                         }
 761                 else
 762                         BIO_printf(bio,"no peer certificate available\n");
 763
 764                 sk2=SSL_get_client_CA_list(s);
 765                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
 766                         {
 767                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
 768                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
 769                                 {
 770                                 xn=sk_X509_NAME_value(sk2,i);
 771                                 X509_NAME_oneline(xn,buf,sizeof(buf));
 772                                 BIO_write(bio,buf,strlen(buf));
 773                                 BIO_write(bio,"\n",1);
 774                                 }
 775                         }
 776                 else
 777                         {
 778                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
 779                         }
 780                 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
 781                 if (p != NULL)
 782                         {
 783                         /* This works only for SSL 2.  In later protocol
 784                          * versions, the client does not know what other
 785                          * ciphers (in addition to the one to be used
 786                          * in the current connection) the server supports. */
 787
 788                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
 789                         j=i=0;
 790                         while (*p)
 791                                 {
 792                                 if (*p == ':')
 793                                         {
 794                                         BIO_write(bio,space,15-j%25);
 795                                         i++;
 796                                         j=0;
 797                                         BIO_write(bio,((i%3)?" ":"\n"),1);
 798                                         }
 799                                 else
 800                                         {
 801                                         BIO_write(bio,p,1);
 802                                         j++;
 803                                         }
 804                                 p++;
 805                                 }
 806                         BIO_write(bio,"\n",1);
 807                         }
 808
 809                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
 810                         BIO_number_read(SSL_get_rbio(s)),
 811                         BIO_number_written(SSL_get_wbio(s)));
 812                 }
 813         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
 814         c=SSL_get_current_cipher(s);
 815         BIO_printf(bio,"%s, Cipher is %s\n",
 816                 SSL_CIPHER_get_version(c),
 817                 SSL_CIPHER_get_name(c));
 818         if (peer != NULL) {
 819                 EVP_PKEY *pktmp;
 820                 pktmp = X509_get_pubkey(peer);
 821                 BIO_printf(bio,"Server public key is %d bit\n",
 822                                                          EVP_PKEY_bits(pktmp));
 823                 EVP_PKEY_free(pktmp);
 824         }
 825         SSL_SESSION_print(bio,SSL_get_session(s));
 826         BIO_printf(bio,"---\n");
 827         if (peer != NULL)
 828                 X509_free(peer);
 829         }
 830