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