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