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  * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
  60  *
  61  * Redistribution and use in source and binary forms, with or without
  62  * modification, are permitted provided that the following conditions
  63  * are met:
  64  *
  65  * 1. Redistributions of source code must retain the above copyright
  66  *    notice, this list of conditions and the following disclaimer.
  67  *
  68  * 2. Redistributions in binary form must reproduce the above copyright
  69  *    notice, this list of conditions and the following disclaimer in
  70  *    the documentation and/or other materials provided with the
  71  *    distribution.
  72  *
  73  * 3. All advertising materials mentioning features or use of this
  74  *    software must display the following acknowledgment:
  75  *    "This product includes software developed by the OpenSSL Project
  76  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  77  *
  78  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  79  *    endorse or promote products derived from this software without
  80  *    prior written permission. For written permission, please contact
  81  *    openssl-core@openssl.org.
  82  *
  83  * 5. Products derived from this software may not be called "OpenSSL"
  84  *    nor may "OpenSSL" appear in their names without prior written
  85  *    permission of the OpenSSL Project.
  86  *
  87  * 6. Redistributions of any form whatsoever must retain the following
  88  *    acknowledgment:
  89  *    "This product includes software developed by the OpenSSL Project
  90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  91  *
  92  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  93  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  94  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  95  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  96  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  97  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  98  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  99  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 100  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 101  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 102  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 103  * OF THE POSSIBILITY OF SUCH DAMAGE.
 104  * ====================================================================
 105  *
 106  * This product includes cryptographic software written by Eric Young
 107  * (eay@cryptsoft.com).  This product includes software written by Tim
 108  * Hudson (tjh@cryptsoft.com).
 109  *
 110  */
 111
 112 #include <assert.h>
 113 #include <stdio.h>
 114 #include <stdlib.h>
 115 #include <string.h>
 116 #include <openssl/e_os2.h>
 117 #ifdef OPENSSL_NO_STDIO
 118 #define APPS_WIN16
 119 #endif
 120
 121 /* With IPv6, it looks like Digital has mixed up the proper order of
 122    recursive header file inclusion, resulting in the compiler complaining
 123    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
 124    is needed to have fileno() declared correctly...  So let's define u_int */
 125 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
 126 #define __U_INT
 127 typedef unsigned int u_int;
 128 #endif
 129
 130 #define USE_SOCKETS
 131 #include "apps.h"
 132 #include <openssl/x509.h>
 133 #include <openssl/ssl.h>
 134 #include <openssl/err.h>
 135 #include <openssl/pem.h>
 136 #include <openssl/rand.h>
 137 #include "s_apps.h"
 138
 139 #ifdef OPENSSL_SYS_WINDOWS
 140 #include <conio.h>
 141 #endif
 142
 143 #ifdef OPENSSL_SYS_WINCE
 144 /* Windows CE incorrectly defines fileno as returning void*, so to avoid problems below... */
 145 #ifdef fileno
 146 #undef fileno
 147 #endif
 148 #define fileno(a) (int)_fileno(a)
 149 #endif
 150
 151
 152 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
 153 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
 154 #undef FIONBIO
 155 #endif
 156
 157 #undef PROG
 158 #define PROG    s_client_main
 159
 160 /*#define SSL_HOST_NAME "www.netscape.com" */
 161 /*#define SSL_HOST_NAME "193.118.187.102" */
 162 #define SSL_HOST_NAME   "localhost"
 163
 164 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 165
 166 #undef BUFSIZZ
 167 #define BUFSIZZ 1024*8
 168
 169 extern int verify_depth;
 170 extern int verify_error;
 171
 172 #ifdef FIONBIO
 173 static int c_nbio=0;
 174 #endif
 175 static int c_Pause=0;
 176 static int c_debug=0;
 177 static int c_msg=0;
 178 static int c_showcerts=0;
 179
 180 static void sc_usage(void);
 181 static void print_stuff(BIO *berr,SSL *con,int full);
 182 static BIO *bio_c_out=NULL;
 183 static int c_quiet=0;
 184 static int c_ign_eof=0;
 185
 186 static void sc_usage(void)
 187         {
 188         BIO_printf(bio_err,"usage: s_client args\n");
 189         BIO_printf(bio_err,"\n");
 190         BIO_printf(bio_err," -host host     - use -connect instead\n");
 191         BIO_printf(bio_err," -port port     - use -connect instead\n");
 192         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 193
 194         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 195         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 196         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
 197         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 198         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 199         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 200         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 201         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 202         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 203         BIO_printf(bio_err," -debug        - extra output\n");
 204         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 205         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 206         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 207 #ifdef FIONBIO
 208         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 209 #endif
 210         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 211         BIO_printf(bio_err," -quiet        - no s_client output\n");
 212         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 213         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 214         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 215         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 216         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 217         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 218         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 219         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 220         BIO_printf(bio_err,"                 command to see what is available\n");
 221         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
 222         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
 223         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
 224         BIO_printf(bio_err,"                 only \"smtp\" is supported.\n");
 225         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 226         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 227
 228         }
 229
 230 int MAIN(int, char **);
 231
 232 int MAIN(int argc, char **argv)
 233         {
 234         int off=0;
 235         SSL *con=NULL,*con2=NULL;
 236         X509_STORE *store = NULL;
 237         int s,k,width,state=0;
 238         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
 239         int cbuf_len,cbuf_off;
 240         int sbuf_len,sbuf_off;
 241         fd_set readfds,writefds;
 242         short port=PORT;
 243         int full_log=1;
 244         char *host=SSL_HOST_NAME;
 245         char *cert_file=NULL,*key_file=NULL;
 246         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 247         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 248         int crlf=0;
 249         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 250         SSL_CTX *ctx=NULL;
 251         int ret=1,in_init=1,i,nbio_test=0;
 252         int smtp_starttls = 0;
 253         int prexit = 0, vflags = 0;
 254         SSL_METHOD *meth=NULL;
 255         BIO *sbio;
 256         char *inrand=NULL;
 257         char *engine_id=NULL;
 258         ENGINE *e=NULL;
 259 #ifdef OPENSSL_SYS_WINDOWS
 260         struct timeval tv;
 261 #endif
 262
 263 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 264         meth=SSLv23_client_method();
 265 #elif !defined(OPENSSL_NO_SSL3)
 266         meth=SSLv3_client_method();
 267 #elif !defined(OPENSSL_NO_SSL2)
 268         meth=SSLv2_client_method();
 269 #endif
 270
 271         apps_startup();
 272         c_Pause=0;
 273         c_quiet=0;
 274         c_ign_eof=0;
 275         c_debug=0;
 276         c_msg=0;
 277         c_showcerts=0;
 278
 279         if (bio_err == NULL)
 280                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 281
 282         if (!load_config(bio_err, NULL))
 283                 goto end;
 284
 285         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 286                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 287                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 288                 {
 289                 BIO_printf(bio_err,"out of memory\n");
 290                 goto end;
 291                 }
 292
 293         verify_depth=0;
 294         verify_error=X509_V_OK;
 295 #ifdef FIONBIO
 296         c_nbio=0;
 297 #endif
 298
 299         argc--;
 300         argv++;
 301         while (argc >= 1)
 302                 {
 303                 if      (strcmp(*argv,"-host") == 0)
 304                         {
 305                         if (--argc < 1) goto bad;
 306                         host= *(++argv);
 307                         }
 308                 else if (strcmp(*argv,"-port") == 0)
 309                         {
 310                         if (--argc < 1) goto bad;
 311                         port=atoi(*(++argv));
 312                         if (port == 0) goto bad;
 313                         }
 314                 else if (strcmp(*argv,"-connect") == 0)
 315                         {
 316                         if (--argc < 1) goto bad;
 317                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 318                                 goto bad;
 319                         }
 320                 else if (strcmp(*argv,"-verify") == 0)
 321                         {
 322                         verify=SSL_VERIFY_PEER;
 323                         if (--argc < 1) goto bad;
 324                         verify_depth=atoi(*(++argv));
 325                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 326                         }
 327                 else if (strcmp(*argv,"-cert") == 0)
 328                         {
 329                         if (--argc < 1) goto bad;
 330                         cert_file= *(++argv);
 331                         }
 332                 else if (strcmp(*argv,"-crl_check") == 0)
 333                         vflags |= X509_V_FLAG_CRL_CHECK;
 334                 else if (strcmp(*argv,"-crl_check_all") == 0)
 335                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
 336                 else if (strcmp(*argv,"-prexit") == 0)
 337                         prexit=1;
 338                 else if (strcmp(*argv,"-crlf") == 0)
 339                         crlf=1;
 340                 else if (strcmp(*argv,"-quiet") == 0)
 341                         {
 342                         c_quiet=1;
 343                         c_ign_eof=1;
 344                         }
 345                 else if (strcmp(*argv,"-ign_eof") == 0)
 346                         c_ign_eof=1;
 347                 else if (strcmp(*argv,"-pause") == 0)
 348                         c_Pause=1;
 349                 else if (strcmp(*argv,"-debug") == 0)
 350                         c_debug=1;
 351                 else if (strcmp(*argv,"-msg") == 0)
 352                         c_msg=1;
 353                 else if (strcmp(*argv,"-showcerts") == 0)
 354                         c_showcerts=1;
 355                 else if (strcmp(*argv,"-nbio_test") == 0)
 356                         nbio_test=1;
 357                 else if (strcmp(*argv,"-state") == 0)
 358                         state=1;
 359 #ifndef OPENSSL_NO_SSL2
 360                 else if (strcmp(*argv,"-ssl2") == 0)
 361                         meth=SSLv2_client_method();
 362 #endif
 363 #ifndef OPENSSL_NO_SSL3
 364                 else if (strcmp(*argv,"-ssl3") == 0)
 365                         meth=SSLv3_client_method();
 366 #endif
 367 #ifndef OPENSSL_NO_TLS1
 368                 else if (strcmp(*argv,"-tls1") == 0)
 369                         meth=TLSv1_client_method();
 370 #endif
 371                 else if (strcmp(*argv,"-bugs") == 0)
 372                         bugs=1;
 373                 else if (strcmp(*argv,"-key") == 0)
 374                         {
 375                         if (--argc < 1) goto bad;
 376                         key_file= *(++argv);
 377                         }
 378                 else if (strcmp(*argv,"-reconnect") == 0)
 379                         {
 380                         reconnect=5;
 381                         }
 382                 else if (strcmp(*argv,"-CApath") == 0)
 383                         {
 384                         if (--argc < 1) goto bad;
 385                         CApath= *(++argv);
 386                         }
 387                 else if (strcmp(*argv,"-CAfile") == 0)
 388                         {
 389                         if (--argc < 1) goto bad;
 390                         CAfile= *(++argv);
 391                         }
 392                 else if (strcmp(*argv,"-no_tls1") == 0)
 393                         off|=SSL_OP_NO_TLSv1;
 394                 else if (strcmp(*argv,"-no_ssl3") == 0)
 395                         off|=SSL_OP_NO_SSLv3;
 396                 else if (strcmp(*argv,"-no_ssl2") == 0)
 397                         off|=SSL_OP_NO_SSLv2;
 398                 else if (strcmp(*argv,"-serverpref") == 0)
 399                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 400                 else if (strcmp(*argv,"-cipher") == 0)
 401                         {
 402                         if (--argc < 1) goto bad;
 403                         cipher= *(++argv);
 404                         }
 405 #ifdef FIONBIO
 406                 else if (strcmp(*argv,"-nbio") == 0)
 407                         { c_nbio=1; }
 408 #endif
 409                 else if (strcmp(*argv,"-starttls") == 0)
 410                         {
 411                         if (--argc < 1) goto bad;
 412                         ++argv;
 413                         if (strcmp(*argv,"smtp") == 0)
 414                                 smtp_starttls = 1;
 415                         else
 416                                 goto bad;
 417                         }
 418                 else if (strcmp(*argv,"-engine") == 0)
 419                         {
 420                         if (--argc < 1) goto bad;
 421                         engine_id = *(++argv);
 422                         }
 423                 else if (strcmp(*argv,"-rand") == 0)
 424                         {
 425                         if (--argc < 1) goto bad;
 426                         inrand= *(++argv);
 427                         }
 428                 else
 429                         {
 430                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 431                         badop=1;
 432                         break;
 433                         }
 434                 argc--;
 435                 argv++;
 436                 }
 437         if (badop)
 438                 {
 439 bad:
 440                 sc_usage();
 441                 goto end;
 442                 }
 443
 444         OpenSSL_add_ssl_algorithms();
 445         SSL_load_error_strings();
 446
 447         e = setup_engine(bio_err, engine_id, 1);
 448
 449         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
 450                 && !RAND_status())
 451                 {
 452                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 453                 }
 454         if (inrand != NULL)
 455                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 456                         app_RAND_load_files(inrand));
 457
 458         if (bio_c_out == NULL)
 459                 {
 460                 if (c_quiet && !c_debug && !c_msg)
 461                         {
 462                         bio_c_out=BIO_new(BIO_s_null());
 463                         }
 464                 else
 465                         {
 466                         if (bio_c_out == NULL)
 467                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 468                         }
 469                 }
 470
 471         ctx=SSL_CTX_new(meth);
 472         if (ctx == NULL)
 473                 {
 474                 ERR_print_errors(bio_err);
 475                 goto end;
 476                 }
 477
 478         if (bugs)
 479                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 480         else
 481                 SSL_CTX_set_options(ctx,off);
 482
 483         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 484         if (cipher != NULL)
 485                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
 486                 BIO_printf(bio_err,"error setting cipher list\n");
 487                 ERR_print_errors(bio_err);
 488                 goto end;
 489         }
 490 #if 0
 491         else
 492                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 493 #endif
 494
 495         SSL_CTX_set_verify(ctx,verify,verify_callback);
 496         if (!set_cert_stuff(ctx,cert_file,key_file))
 497                 goto end;
 498
 499         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 500                 (!SSL_CTX_set_default_verify_paths(ctx)))
 501                 {
 502                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
 503                 ERR_print_errors(bio_err);
 504                 /* goto end; */
 505                 }
 506
 507         store = SSL_CTX_get_cert_store(ctx);
 508         X509_STORE_set_flags(store, vflags);
 509
 510         con=SSL_new(ctx);
 511 #ifndef OPENSSL_NO_KRB5
 512         if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
 513                 {
 514                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
 515                 }
 516 #endif  /* OPENSSL_NO_KRB5  */
 517 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 518
 519 re_start:
 520
 521         if (init_client(&s,host,port) == 0)
 522                 {
 523                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 524                 SHUTDOWN(s);
 525                 goto end;
 526                 }
 527         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 528
 529 #ifdef FIONBIO
 530         if (c_nbio)
 531                 {
 532                 unsigned long l=1;
 533                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 534                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 535                         {
 536                         ERR_print_errors(bio_err);
 537                         goto end;
 538                         }
 539                 }
 540 #endif
 541         if (c_Pause & 0x01) con->debug=1;
 542         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 543
 544         if (nbio_test)
 545                 {
 546                 BIO *test;
 547
 548                 test=BIO_new(BIO_f_nbio_test());
 549                 sbio=BIO_push(test,sbio);
 550                 }
 551
 552         if (c_debug)
 553                 {
 554                 con->debug=1;
 555                 BIO_set_callback(sbio,bio_dump_cb);
 556                 BIO_set_callback_arg(sbio,bio_c_out);
 557                 }
 558         if (c_msg)
 559                 {
 560                 SSL_set_msg_callback(con, msg_cb);
 561                 SSL_set_msg_callback_arg(con, bio_c_out);
 562                 }
 563
 564         SSL_set_bio(con,sbio,sbio);
 565         SSL_set_connect_state(con);
 566
 567         /* ok, lets connect */
 568         width=SSL_get_fd(con)+1;
 569
 570         read_tty=1;
 571         write_tty=0;
 572         tty_on=0;
 573         read_ssl=1;
 574         write_ssl=1;
 575
 576         cbuf_len=0;
 577         cbuf_off=0;
 578         sbuf_len=0;
 579         sbuf_off=0;
 580
 581         /* This is an ugly hack that does a lot of assumptions */
 582         if (smtp_starttls)
 583                 {
 584                 BIO_read(sbio,mbuf,BUFSIZZ);
 585                 BIO_printf(sbio,"STARTTLS\r\n");
 586                 BIO_read(sbio,sbuf,BUFSIZZ);
 587                 }
 588
 589         for (;;)
 590                 {
 591                 FD_ZERO(&readfds);
 592                 FD_ZERO(&writefds);
 593
 594                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
 595                         {
 596                         in_init=1;
 597                         tty_on=0;
 598                         }
 599                 else
 600                         {
 601                         tty_on=1;
 602                         if (in_init)
 603                                 {
 604                                 in_init=0;
 605                                 print_stuff(bio_c_out,con,full_log);
 606                                 if (full_log > 0) full_log--;
 607
 608                                 if (smtp_starttls)
 609                                         {
 610                                         BIO_printf(bio_err,"%s",mbuf);
 611                                         /* We don't need to know any more */
 612                                         smtp_starttls = 0;
 613                                         }
 614
 615                                 if (reconnect)
 616                                         {
 617                                         reconnect--;
 618                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
 619                                         SSL_shutdown(con);
 620                                         SSL_set_connect_state(con);
 621                                         SHUTDOWN(SSL_get_fd(con));
 622                                         goto re_start;
 623                                         }
 624                                 }
 625                         }
 626
 627                 ssl_pending = read_ssl && SSL_pending(con);
 628
 629                 if (!ssl_pending)
 630                         {
 631 #ifndef OPENSSL_SYS_WINDOWS
 632                         if (tty_on)
 633                                 {
 634                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
 635                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
 636                                 }
 637                         if (read_ssl)
 638                                 FD_SET(SSL_get_fd(con),&readfds);
 639                         if (write_ssl)
 640                                 FD_SET(SSL_get_fd(con),&writefds);
 641 #else
 642                         if(!tty_on || !write_tty) {
 643                                 if (read_ssl)
 644                                         FD_SET(SSL_get_fd(con),&readfds);
 645                                 if (write_ssl)
 646                                         FD_SET(SSL_get_fd(con),&writefds);
 647                         }
 648 #endif
 649 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
 650                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 651
 652                         /* Note: under VMS with SOCKETSHR the second parameter
 653                          * is currently of type (int *) whereas under other
 654                          * systems it is (void *) if you don't have a cast it
 655                          * will choke the compiler: if you do have a cast then
 656                          * you can either go for (int *) or (void *).
 657                          */
 658 #ifdef OPENSSL_SYS_WINDOWS
 659                         /* Under Windows we make the assumption that we can
 660                          * always write to the tty: therefore if we need to
 661                          * write to the tty we just fall through. Otherwise
 662                          * we timeout the select every second and see if there
 663                          * are any keypresses. Note: this is a hack, in a proper
 664                          * Windows application we wouldn't do this.
 665                          */
 666                         i=0;
 667                         if(!write_tty) {
 668                                 if(read_tty) {
 669                                         tv.tv_sec = 1;
 670                                         tv.tv_usec = 0;
 671                                         i=select(width,(void *)&readfds,(void *)&writefds,
 672                                                  NULL,&tv);
 673 #ifdef OPENSSL_SYS_WINCE
 674                                         if(!i && (!_kbhit() || !read_tty) ) continue;
 675 #else
 676                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
 677 #endif
 678                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
 679                                          NULL,NULL);
 680                         }
 681 #else
 682                         i=select(width,(void *)&readfds,(void *)&writefds,
 683                                  NULL,NULL);
 684 #endif
 685                         if ( i < 0)
 686                                 {
 687                                 BIO_printf(bio_err,"bad select %d\n",
 688                                 get_last_socket_error());
 689                                 goto shut;
 690                                 /* goto end; */
 691                                 }
 692                         }
 693
 694                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
 695                         {
 696                         k=SSL_write(con,&(cbuf[cbuf_off]),
 697                                 (unsigned int)cbuf_len);
 698                         switch (SSL_get_error(con,k))
 699                                 {
 700                         case SSL_ERROR_NONE:
 701                                 cbuf_off+=k;
 702                                 cbuf_len-=k;
 703                                 if (k <= 0) goto end;
 704                                 /* we have done a  write(con,NULL,0); */
 705                                 if (cbuf_len <= 0)
 706                                         {
 707                                         read_tty=1;
 708                                         write_ssl=0;
 709                                         }
 710                                 else /* if (cbuf_len > 0) */
 711                                         {
 712                                         read_tty=0;
 713                                         write_ssl=1;
 714                                         }
 715                                 break;
 716                         case SSL_ERROR_WANT_WRITE:
 717                                 BIO_printf(bio_c_out,"write W BLOCK\n");
 718                                 write_ssl=1;
 719                                 read_tty=0;
 720                                 break;
 721                         case SSL_ERROR_WANT_READ:
 722                                 BIO_printf(bio_c_out,"write R BLOCK\n");
 723                                 write_tty=0;
 724                                 read_ssl=1;
 725                                 write_ssl=0;
 726                                 break;
 727                         case SSL_ERROR_WANT_X509_LOOKUP:
 728                                 BIO_printf(bio_c_out,"write X BLOCK\n");
 729                                 break;
 730                         case SSL_ERROR_ZERO_RETURN:
 731                                 if (cbuf_len != 0)
 732                                         {
 733                                         BIO_printf(bio_c_out,"shutdown\n");
 734                                         goto shut;
 735                                         }
 736                                 else
 737                                         {
 738                                         read_tty=1;
 739                                         write_ssl=0;
 740                                         break;
 741                                         }
 742
 743                         case SSL_ERROR_SYSCALL:
 744                                 if ((k != 0) || (cbuf_len != 0))
 745                                         {
 746                                         BIO_printf(bio_err,"write:errno=%d\n",
 747                                                 get_last_socket_error());
 748                                         goto shut;
 749                                         }
 750                                 else
 751                                         {
 752                                         read_tty=1;
 753                                         write_ssl=0;
 754                                         }
 755                                 break;
 756                         case SSL_ERROR_SSL:
 757                                 ERR_print_errors(bio_err);
 758                                 goto shut;
 759                                 }
 760                         }
 761 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
 762                 /* Assume Windows/DOS can always write */
 763                 else if (!ssl_pending && write_tty)
 764 #else
 765                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
 766 #endif
 767                         {
 768 #ifdef CHARSET_EBCDIC
 769                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
 770 #endif
 771                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
 772
 773                         if (i <= 0)
 774                                 {
 775                                 BIO_printf(bio_c_out,"DONE\n");
 776                                 goto shut;
 777                                 /* goto end; */
 778                                 }
 779
 780                         sbuf_len-=i;;
 781                         sbuf_off+=i;
 782                         if (sbuf_len <= 0)
 783                                 {
 784                                 read_ssl=1;
 785                                 write_tty=0;
 786                                 }
 787                         }
 788                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
 789                         {
 790 #ifdef RENEG
 791 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
 792 #endif
 793 #if 1
 794                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
 795 #else
 796 /* Demo for pending and peek :-) */
 797                         k=SSL_read(con,sbuf,16);
 798 { char zbuf[10240];
 799 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
 800 }
 801 #endif
 802
 803                         switch (SSL_get_error(con,k))
 804                                 {
 805                         case SSL_ERROR_NONE:
 806                                 if (k <= 0)
 807                                         goto end;
 808                                 sbuf_off=0;
 809                                 sbuf_len=k;
 810
 811                                 read_ssl=0;
 812                                 write_tty=1;
 813                                 break;
 814                         case SSL_ERROR_WANT_WRITE:
 815                                 BIO_printf(bio_c_out,"read W BLOCK\n");
 816                                 write_ssl=1;
 817                                 read_tty=0;
 818                                 break;
 819                         case SSL_ERROR_WANT_READ:
 820                                 BIO_printf(bio_c_out,"read R BLOCK\n");
 821                                 write_tty=0;
 822                                 read_ssl=1;
 823                                 if ((read_tty == 0) && (write_ssl == 0))
 824                                         write_ssl=1;
 825                                 break;
 826                         case SSL_ERROR_WANT_X509_LOOKUP:
 827                                 BIO_printf(bio_c_out,"read X BLOCK\n");
 828                                 break;
 829                         case SSL_ERROR_SYSCALL:
 830                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
 831                                 goto shut;
 832                         case SSL_ERROR_ZERO_RETURN:
 833                                 BIO_printf(bio_c_out,"closed\n");
 834                                 goto shut;
 835                         case SSL_ERROR_SSL:
 836                                 ERR_print_errors(bio_err);
 837                                 goto shut;
 838                                 /* break; */
 839                                 }
 840                         }
 841
 842 #ifdef OPENSSL_SYS_WINDOWS
 843 #ifdef OPENSSL_SYS_WINCE
 844                 else if (_kbhit())
 845 #else
 846                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
 847 #endif
 848 #else
 849                 else if (FD_ISSET(fileno(stdin),&readfds))
 850 #endif
 851                         {
 852                         if (crlf)
 853                                 {
 854                                 int j, lf_num;
 855
 856                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
 857                                 lf_num = 0;
 858                                 /* both loops are skipped when i <= 0 */
 859                                 for (j = 0; j < i; j++)
 860                                         if (cbuf[j] == '\n')
 861                                                 lf_num++;
 862                                 for (j = i-1; j >= 0; j--)
 863                                         {
 864                                         cbuf[j+lf_num] = cbuf[j];
 865                                         if (cbuf[j] == '\n')
 866                                                 {
 867                                                 lf_num--;
 868                                                 i++;
 869                                                 cbuf[j+lf_num] = '\r';
 870                                                 }
 871                                         }
 872                                 assert(lf_num == 0);
 873                                 }
 874                         else
 875                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
 876
 877                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
 878                                 {
 879                                 BIO_printf(bio_err,"DONE\n");
 880                                 goto shut;
 881                                 }
 882
 883                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
 884                                 {
 885                                 BIO_printf(bio_err,"RENEGOTIATING\n");
 886                                 SSL_renegotiate(con);
 887                                 cbuf_len=0;
 888                                 }
 889                         else
 890                                 {
 891                                 cbuf_len=i;
 892                                 cbuf_off=0;
 893 #ifdef CHARSET_EBCDIC
 894                                 ebcdic2ascii(cbuf, cbuf, i);
 895 #endif
 896                                 }
 897
 898                         write_ssl=1;
 899                         read_tty=0;
 900                         }
 901                 }
 902 shut:
 903         SSL_shutdown(con);
 904         SHUTDOWN(SSL_get_fd(con));
 905         ret=0;
 906 end:
 907         if(prexit) print_stuff(bio_c_out,con,1);
 908         if (con != NULL) SSL_free(con);
 909         if (con2 != NULL) SSL_free(con2);
 910         if (ctx != NULL) SSL_CTX_free(ctx);
 911         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
 912         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
 913         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
 914         if (bio_c_out != NULL)
 915                 {
 916                 BIO_free(bio_c_out);
 917                 bio_c_out=NULL;
 918                 }
 919         apps_shutdown();
 920         EXIT(ret);
 921         }
 922
 923
 924 static void print_stuff(BIO *bio, SSL *s, int full)
 925         {
 926         X509 *peer=NULL;
 927         char *p;
 928         static char *space="                ";
 929         char buf[BUFSIZ];
 930         STACK_OF(X509) *sk;
 931         STACK_OF(X509_NAME) *sk2;
 932         SSL_CIPHER *c;
 933         X509_NAME *xn;
 934         int j,i;
 935
 936         if (full)
 937                 {
 938                 int got_a_chain = 0;
 939
 940                 sk=SSL_get_peer_cert_chain(s);
 941                 if (sk != NULL)
 942                         {
 943                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
 944
 945                         BIO_printf(bio,"---\nCertificate chain\n");
 946                         for (i=0; i<sk_X509_num(sk); i++)
 947                                 {
 948                                 X509_NAME_oneline(X509_get_subject_name(
 949                                         sk_X509_value(sk,i)),buf,sizeof buf);
 950                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
 951                                 X509_NAME_oneline(X509_get_issuer_name(
 952                                         sk_X509_value(sk,i)),buf,sizeof buf);
 953                                 BIO_printf(bio,"   i:%s\n",buf);
 954                                 if (c_showcerts)
 955                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
 956                                 }
 957                         }
 958
 959                 BIO_printf(bio,"---\n");
 960                 peer=SSL_get_peer_certificate(s);
 961                 if (peer != NULL)
 962                         {
 963                         BIO_printf(bio,"Server certificate\n");
 964                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
 965                                 PEM_write_bio_X509(bio,peer);
 966                         X509_NAME_oneline(X509_get_subject_name(peer),
 967                                 buf,sizeof buf);
 968                         BIO_printf(bio,"subject=%s\n",buf);
 969                         X509_NAME_oneline(X509_get_issuer_name(peer),
 970                                 buf,sizeof buf);
 971                         BIO_printf(bio,"issuer=%s\n",buf);
 972                         }
 973                 else
 974                         BIO_printf(bio,"no peer certificate available\n");
 975
 976                 sk2=SSL_get_client_CA_list(s);
 977                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
 978                         {
 979                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
 980                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
 981                                 {
 982                                 xn=sk_X509_NAME_value(sk2,i);
 983                                 X509_NAME_oneline(xn,buf,sizeof(buf));
 984                                 BIO_write(bio,buf,strlen(buf));
 985                                 BIO_write(bio,"\n",1);
 986                                 }
 987                         }
 988                 else
 989                         {
 990                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
 991                         }
 992                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
 993                 if (p != NULL)
 994                         {
 995                         /* This works only for SSL 2.  In later protocol
 996                          * versions, the client does not know what other
 997                          * ciphers (in addition to the one to be used
 998                          * in the current connection) the server supports. */
 999
1000                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
1001                         j=i=0;
1002                         while (*p)
1003                                 {
1004                                 if (*p == ':')
1005                                         {
1006                                         BIO_write(bio,space,15-j%25);
1007                                         i++;
1008                                         j=0;
1009                                         BIO_write(bio,((i%3)?" ":"\n"),1);
1010                                         }
1011                                 else
1012                                         {
1013                                         BIO_write(bio,p,1);
1014                                         j++;
1015                                         }
1016                                 p++;
1017                                 }
1018                         BIO_write(bio,"\n",1);
1019                         }
1020
1021                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
1022                         BIO_number_read(SSL_get_rbio(s)),
1023                         BIO_number_written(SSL_get_wbio(s)));
1024                 }
1025         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
1026         c=SSL_get_current_cipher(s);
1027         BIO_printf(bio,"%s, Cipher is %s\n",
1028                 SSL_CIPHER_get_version(c),
1029                 SSL_CIPHER_get_name(c));
1030         if (peer != NULL) {
1031                 EVP_PKEY *pktmp;
1032                 pktmp = X509_get_pubkey(peer);
1033                 BIO_printf(bio,"Server public key is %d bit\n",
1034                                                          EVP_PKEY_bits(pktmp));
1035                 EVP_PKEY_free(pktmp);
1036         }
1037         SSL_SESSION_print(bio,SSL_get_session(s));
1038         BIO_printf(bio,"---\n");
1039         if (peer != NULL)
1040                 X509_free(peer);
1041         /* flush, or debugging output gets mixed with http response */
1042         BIO_flush(bio);
1043         }
1044