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 <openssl/ocsp.h>
 138 #include "s_apps.h"
 139 #include "timeouts.h"
 140
 141 #ifdef OPENSSL_SYS_WINCE
 142 /* Windows CE incorrectly defines fileno as returning void*, so to avoid problems below... */
 143 #ifdef fileno
 144 #undef fileno
 145 #endif
 146 #define fileno(a) (int)_fileno(a)
 147 #endif
 148
 149
 150 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
 151 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
 152 #undef FIONBIO
 153 #endif
 154
 155 #undef PROG
 156 #define PROG    s_client_main
 157
 158 /*#define SSL_HOST_NAME "www.netscape.com" */
 159 /*#define SSL_HOST_NAME "193.118.187.102" */
 160 #define SSL_HOST_NAME   "localhost"
 161
 162 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 163
 164 #undef BUFSIZZ
 165 #define BUFSIZZ 1024*8
 166
 167 extern int verify_depth;
 168 extern int verify_error;
 169
 170 #ifdef FIONBIO
 171 static int c_nbio=0;
 172 #endif
 173 static int c_Pause=0;
 174 static int c_debug=0;
 175 #ifndef OPENSSL_NO_TLSEXT
 176 static int c_tlsextdebug=0;
 177 static int c_status_req=0;
 178 #endif
 179 static int c_msg=0;
 180 static int c_showcerts=0;
 181
 182 static void sc_usage(void);
 183 static void print_stuff(BIO *berr,SSL *con,int full);
 184 #ifndef OPENSSL_NO_TLSEXT
 185 static int ocsp_resp_cb(SSL *s, void *arg);
 186 #endif
 187 static BIO *bio_c_out=NULL;
 188 static int c_quiet=0;
 189 static int c_ign_eof=0;
 190
 191 static void sc_usage(void)
 192         {
 193         BIO_printf(bio_err,"usage: s_client args\n");
 194         BIO_printf(bio_err,"\n");
 195         BIO_printf(bio_err," -host host     - use -connect instead\n");
 196         BIO_printf(bio_err," -port port     - use -connect instead\n");
 197         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 198
 199         BIO_printf(bio_err," -verify depth - turn on peer certificate verification\n");
 200         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 201         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
 202         BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
 203         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 204         BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
 205         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
 206         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 207         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 208         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 209         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 210         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 211         BIO_printf(bio_err," -debug        - extra output\n");
 212 #ifdef WATT32
 213         BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
 214 #endif
 215         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 216         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 217         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 218 #ifdef FIONBIO
 219         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 220 #endif
 221         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 222         BIO_printf(bio_err," -quiet        - no s_client output\n");
 223         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 224         BIO_printf(bio_err," -no_ign_eof   - don't ignore input eof\n");
 225         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 226         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 227         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 228         BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");
 229         BIO_printf(bio_err," -mtu          - set the link layer MTU\n");
 230         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 231         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 232         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 233         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 234         BIO_printf(bio_err,"                 command to see what is available\n");
 235         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
 236         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
 237         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
 238         BIO_printf(bio_err,"                 only \"smtp\", \"pop3\", \"imap\", \"ftp\" and \"xmpp\"\n");
 239         BIO_printf(bio_err,"                 are supported.\n");
 240 #ifndef OPENSSL_NO_ENGINE
 241         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 242 #endif
 243         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 244         BIO_printf(bio_err," -sess_out arg - file to write SSL session to\n");
 245         BIO_printf(bio_err," -sess_in arg  - file to read SSL session from\n");
 246 #ifndef OPENSSL_NO_TLSEXT
 247         BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
 248         BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
 249         BIO_printf(bio_err," -status           - request certificate status from server\n");
 250         BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
 251 #endif
 252         }
 253
 254 #ifndef OPENSSL_NO_TLSEXT
 255
 256 /* This is a context that we pass to callbacks */
 257 typedef struct tlsextctx_st {
 258    BIO * biodebug;
 259    int ack;
 260 } tlsextctx;
 261
 262
 263 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
 264         {
 265         tlsextctx * p = (tlsextctx *) arg;
 266         const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
 267         if (SSL_get_servername_type(s) != -1)
 268                 p->ack = !SSL_session_reused(s) && hn != NULL;
 269         else
 270                 BIO_printf(bio_err,"Can't use SSL_get_servername\n");
 271
 272         return SSL_TLSEXT_ERR_OK;
 273         }
 274 #endif
 275 enum
 276 {
 277         PROTO_OFF       = 0,
 278         PROTO_SMTP,
 279         PROTO_POP3,
 280         PROTO_IMAP,
 281         PROTO_FTP,
 282         PROTO_XMPP
 283 };
 284
 285 int MAIN(int, char **);
 286
 287 int MAIN(int argc, char **argv)
 288         {
 289         int off=0;
 290         SSL *con=NULL,*con2=NULL;
 291         X509_STORE *store = NULL;
 292         int s,k,width,state=0;
 293         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
 294         int cbuf_len,cbuf_off;
 295         int sbuf_len,sbuf_off;
 296         fd_set readfds,writefds;
 297         short port=PORT;
 298         int full_log=1;
 299         char *host=SSL_HOST_NAME;
 300         char *cert_file=NULL,*key_file=NULL;
 301         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
 302         char *passarg = NULL, *pass = NULL;
 303         X509 *cert = NULL;
 304         EVP_PKEY *key = NULL;
 305         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 306         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 307         int crlf=0;
 308         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 309         SSL_CTX *ctx=NULL;
 310         int ret=1,in_init=1,i,nbio_test=0;
 311         int starttls_proto = PROTO_OFF;
 312         int prexit = 0, vflags = 0;
 313         SSL_METHOD *meth=NULL;
 314 #ifdef sock_type
 315 #undef sock_type
 316 #endif
 317         int sock_type=SOCK_STREAM;
 318         BIO *sbio;
 319         char *inrand=NULL;
 320         int mbuf_len=0;
 321         struct timeval timeout, *timeoutp;
 322 #ifndef OPENSSL_NO_ENGINE
 323         char *engine_id=NULL;
 324         char *ssl_client_engine_id=NULL;
 325         ENGINE *ssl_client_engine=NULL;
 326 #endif
 327         ENGINE *e=NULL;
 328 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
 329         struct timeval tv;
 330 #endif
 331
 332 #ifndef OPENSSL_NO_TLSEXT
 333         char *servername = NULL;
 334         tlsextctx tlsextcbp =
 335         {NULL,0};
 336 #endif
 337         char *sess_in = NULL;
 338         char *sess_out = NULL;
 339         struct sockaddr peer;
 340         int peerlen = sizeof(peer);
 341         int enable_timeouts = 0 ;
 342         long socket_mtu = 0;
 343 #ifndef OPENSSL_NO_JPAKE
 344         char *jpake_secret = NULL;
 345 #endif
 346
 347 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 348         meth=SSLv23_client_method();
 349 #elif !defined(OPENSSL_NO_SSL3)
 350         meth=SSLv3_client_method();
 351 #elif !defined(OPENSSL_NO_SSL2)
 352         meth=SSLv2_client_method();
 353 #endif
 354
 355         apps_startup();
 356         c_Pause=0;
 357         c_quiet=0;
 358         c_ign_eof=0;
 359         c_debug=0;
 360         c_msg=0;
 361         c_showcerts=0;
 362
 363         if (bio_err == NULL)
 364                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 365
 366         if (!load_config(bio_err, NULL))
 367                 goto end;
 368
 369         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 370                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 371                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 372                 {
 373                 BIO_printf(bio_err,"out of memory\n");
 374                 goto end;
 375                 }
 376
 377         verify_depth=0;
 378         verify_error=X509_V_OK;
 379 #ifdef FIONBIO
 380         c_nbio=0;
 381 #endif
 382
 383         argc--;
 384         argv++;
 385         while (argc >= 1)
 386                 {
 387                 if      (strcmp(*argv,"-host") == 0)
 388                         {
 389                         if (--argc < 1) goto bad;
 390                         host= *(++argv);
 391                         }
 392                 else if (strcmp(*argv,"-port") == 0)
 393                         {
 394                         if (--argc < 1) goto bad;
 395                         port=atoi(*(++argv));
 396                         if (port == 0) goto bad;
 397                         }
 398                 else if (strcmp(*argv,"-connect") == 0)
 399                         {
 400                         if (--argc < 1) goto bad;
 401                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 402                                 goto bad;
 403                         }
 404                 else if (strcmp(*argv,"-verify") == 0)
 405                         {
 406                         verify=SSL_VERIFY_PEER;
 407                         if (--argc < 1) goto bad;
 408                         verify_depth=atoi(*(++argv));
 409                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 410                         }
 411                 else if (strcmp(*argv,"-cert") == 0)
 412                         {
 413                         if (--argc < 1) goto bad;
 414                         cert_file= *(++argv);
 415                         }
 416                 else if (strcmp(*argv,"-sess_out") == 0)
 417                         {
 418                         if (--argc < 1) goto bad;
 419                         sess_out = *(++argv);
 420                         }
 421                 else if (strcmp(*argv,"-sess_in") == 0)
 422                         {
 423                         if (--argc < 1) goto bad;
 424                         sess_in = *(++argv);
 425                         }
 426                 else if (strcmp(*argv,"-certform") == 0)
 427                         {
 428                         if (--argc < 1) goto bad;
 429                         cert_format = str2fmt(*(++argv));
 430                         }
 431                 else if (strcmp(*argv,"-crl_check") == 0)
 432                         vflags |= X509_V_FLAG_CRL_CHECK;
 433                 else if (strcmp(*argv,"-crl_check_all") == 0)
 434                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
 435                 else if (strcmp(*argv,"-prexit") == 0)
 436                         prexit=1;
 437                 else if (strcmp(*argv,"-crlf") == 0)
 438                         crlf=1;
 439                 else if (strcmp(*argv,"-quiet") == 0)
 440                         {
 441                         c_quiet=1;
 442                         c_ign_eof=1;
 443                         }
 444                 else if (strcmp(*argv,"-ign_eof") == 0)
 445                         c_ign_eof=1;
 446                 else if (strcmp(*argv,"-no_ign_eof") == 0)
 447                         c_ign_eof=0;
 448                 else if (strcmp(*argv,"-pause") == 0)
 449                         c_Pause=1;
 450                 else if (strcmp(*argv,"-debug") == 0)
 451                         c_debug=1;
 452 #ifndef OPENSSL_NO_TLSEXT
 453                 else if (strcmp(*argv,"-tlsextdebug") == 0)
 454                         c_tlsextdebug=1;
 455                 else if (strcmp(*argv,"-status") == 0)
 456                         c_status_req=1;
 457 #endif
 458 #ifdef WATT32
 459                 else if (strcmp(*argv,"-wdebug") == 0)
 460                         dbug_init();
 461 #endif
 462                 else if (strcmp(*argv,"-msg") == 0)
 463                         c_msg=1;
 464                 else if (strcmp(*argv,"-showcerts") == 0)
 465                         c_showcerts=1;
 466                 else if (strcmp(*argv,"-nbio_test") == 0)
 467                         nbio_test=1;
 468                 else if (strcmp(*argv,"-state") == 0)
 469                         state=1;
 470 #ifndef OPENSSL_NO_SSL2
 471                 else if (strcmp(*argv,"-ssl2") == 0)
 472                         meth=SSLv2_client_method();
 473 #endif
 474 #ifndef OPENSSL_NO_SSL3
 475                 else if (strcmp(*argv,"-ssl3") == 0)
 476                         meth=SSLv3_client_method();
 477 #endif
 478 #ifndef OPENSSL_NO_TLS1
 479                 else if (strcmp(*argv,"-tls1") == 0)
 480                         meth=TLSv1_client_method();
 481 #endif
 482 #ifndef OPENSSL_NO_DTLS1
 483                 else if (strcmp(*argv,"-dtls1") == 0)
 484                         {
 485                         meth=DTLSv1_client_method();
 486                         sock_type=SOCK_DGRAM;
 487                         }
 488                 else if (strcmp(*argv,"-timeout") == 0)
 489                         enable_timeouts=1;
 490                 else if (strcmp(*argv,"-mtu") == 0)
 491                         {
 492                         if (--argc < 1) goto bad;
 493                         socket_mtu = atol(*(++argv));
 494                         }
 495 #endif
 496                 else if (strcmp(*argv,"-bugs") == 0)
 497                         bugs=1;
 498                 else if (strcmp(*argv,"-keyform") == 0)
 499                         {
 500                         if (--argc < 1) goto bad;
 501                         key_format = str2fmt(*(++argv));
 502                         }
 503                 else if (strcmp(*argv,"-pass") == 0)
 504                         {
 505                         if (--argc < 1) goto bad;
 506                         passarg = *(++argv);
 507                         }
 508                 else if (strcmp(*argv,"-key") == 0)
 509                         {
 510                         if (--argc < 1) goto bad;
 511                         key_file= *(++argv);
 512                         }
 513                 else if (strcmp(*argv,"-reconnect") == 0)
 514                         {
 515                         reconnect=5;
 516                         }
 517                 else if (strcmp(*argv,"-CApath") == 0)
 518                         {
 519                         if (--argc < 1) goto bad;
 520                         CApath= *(++argv);
 521                         }
 522                 else if (strcmp(*argv,"-CAfile") == 0)
 523                         {
 524                         if (--argc < 1) goto bad;
 525                         CAfile= *(++argv);
 526                         }
 527                 else if (strcmp(*argv,"-no_tls1") == 0)
 528                         off|=SSL_OP_NO_TLSv1;
 529                 else if (strcmp(*argv,"-no_ssl3") == 0)
 530                         off|=SSL_OP_NO_SSLv3;
 531                 else if (strcmp(*argv,"-no_ssl2") == 0)
 532                         off|=SSL_OP_NO_SSLv2;
 533 #ifndef OPENSSL_NO_TLSEXT
 534                 else if (strcmp(*argv,"-no_ticket") == 0)
 535                         { off|=SSL_OP_NO_TICKET; }
 536 #endif
 537                 else if (strcmp(*argv,"-serverpref") == 0)
 538                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 539                 else if (strcmp(*argv,"-cipher") == 0)
 540                         {
 541                         if (--argc < 1) goto bad;
 542                         cipher= *(++argv);
 543                         }
 544 #ifdef FIONBIO
 545                 else if (strcmp(*argv,"-nbio") == 0)
 546                         { c_nbio=1; }
 547 #endif
 548                 else if (strcmp(*argv,"-starttls") == 0)
 549                         {
 550                         if (--argc < 1) goto bad;
 551                         ++argv;
 552                         if (strcmp(*argv,"smtp") == 0)
 553                                 starttls_proto = PROTO_SMTP;
 554                         else if (strcmp(*argv,"pop3") == 0)
 555                                 starttls_proto = PROTO_POP3;
 556                         else if (strcmp(*argv,"imap") == 0)
 557                                 starttls_proto = PROTO_IMAP;
 558                         else if (strcmp(*argv,"ftp") == 0)
 559                                 starttls_proto = PROTO_FTP;
 560                         else if (strcmp(*argv, "xmpp") == 0)
 561                                 starttls_proto = PROTO_XMPP;
 562                         else
 563                                 goto bad;
 564                         }
 565 #ifndef OPENSSL_NO_ENGINE
 566                 else if (strcmp(*argv,"-engine") == 0)
 567                         {
 568                         if (--argc < 1) goto bad;
 569                         engine_id = *(++argv);
 570                         }
 571                 else if (strcmp(*argv,"-ssl_client_engine") == 0)
 572                         {
 573                         if (--argc < 1) goto bad;
 574                         ssl_client_engine_id = *(++argv);
 575                         }
 576 #endif
 577                 else if (strcmp(*argv,"-rand") == 0)
 578                         {
 579                         if (--argc < 1) goto bad;
 580                         inrand= *(++argv);
 581                         }
 582 #ifndef OPENSSL_NO_TLSEXT
 583                 else if (strcmp(*argv,"-servername") == 0)
 584                         {
 585                         if (--argc < 1) goto bad;
 586                         servername= *(++argv);
 587                         /* meth=TLSv1_client_method(); */
 588                         }
 589 #endif
 590 #ifndef OPENSSL_NO_JPAKE
 591                 else if (strcmp(*argv,"-jpake") == 0)
 592                         {
 593                         if (--argc < 1) goto bad;
 594                         jpake_secret = *++argv;
 595                         }
 596 #endif
 597                 else
 598                         {
 599                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 600                         badop=1;
 601                         break;
 602                         }
 603                 argc--;
 604                 argv++;
 605                 }
 606         if (badop)
 607                 {
 608 bad:
 609                 sc_usage();
 610                 goto end;
 611                 }
 612
 613         OpenSSL_add_ssl_algorithms();
 614         SSL_load_error_strings();
 615
 616 #ifndef OPENSSL_NO_ENGINE
 617         e = setup_engine(bio_err, engine_id, 1);
 618         if (ssl_client_engine_id)
 619                 {
 620                 ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
 621                 if (!ssl_client_engine)
 622                         {
 623                         BIO_printf(bio_err,
 624                                         "Error getting client auth engine\n");
 625                         goto end;
 626                         }
 627                 }
 628 #endif
 629         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
 630                 {
 631                 BIO_printf(bio_err, "Error getting password\n");
 632                 goto end;
 633                 }
 634
 635         if (key_file == NULL)
 636                 key_file = cert_file;
 637
 638
 639         if (key_file)
 640
 641                 {
 642
 643                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
 644                                "client certificate private key file");
 645                 if (!key)
 646                         {
 647                         ERR_print_errors(bio_err);
 648                         goto end;
 649                         }
 650
 651                 }
 652
 653         if (cert_file)
 654
 655                 {
 656                 cert = load_cert(bio_err,cert_file,cert_format,
 657                                 NULL, e, "client certificate file");
 658
 659                 if (!cert)
 660                         {
 661                         ERR_print_errors(bio_err);
 662                         goto end;
 663                         }
 664                 }
 665
 666         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
 667                 && !RAND_status())
 668                 {
 669                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 670                 }
 671         if (inrand != NULL)
 672                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 673                         app_RAND_load_files(inrand));
 674
 675         if (bio_c_out == NULL)
 676                 {
 677                 if (c_quiet && !c_debug && !c_msg)
 678                         {
 679                         bio_c_out=BIO_new(BIO_s_null());
 680                         }
 681                 else
 682                         {
 683                         if (bio_c_out == NULL)
 684                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 685                         }
 686                 }
 687
 688         ctx=SSL_CTX_new(meth);
 689         if (ctx == NULL)
 690                 {
 691                 ERR_print_errors(bio_err);
 692                 goto end;
 693                 }
 694
 695 #ifndef OPENSSL_NO_ENGINE
 696         if (ssl_client_engine)
 697                 {
 698                 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
 699                         {
 700                         BIO_puts(bio_err, "Error setting client auth engine\n");
 701                         ERR_print_errors(bio_err);
 702                         ENGINE_free(ssl_client_engine);
 703                         goto end;
 704                         }
 705                 ENGINE_free(ssl_client_engine);
 706                 }
 707 #endif
 708
 709         if (bugs)
 710                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 711         else
 712                 SSL_CTX_set_options(ctx,off);
 713         /* DTLS: partial reads end up discarding unread UDP bytes :-(
 714          * Setting read ahead solves this problem.
 715          */
 716         if (sock_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
 717
 718         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 719         if (cipher != NULL)
 720                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
 721                 BIO_printf(bio_err,"error setting cipher list\n");
 722                 ERR_print_errors(bio_err);
 723                 goto end;
 724         }
 725 #if 0
 726         else
 727                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 728 #endif
 729
 730         SSL_CTX_set_verify(ctx,verify,verify_callback);
 731         if (!set_cert_key_stuff(ctx,cert,key))
 732                 goto end;
 733
 734         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 735                 (!SSL_CTX_set_default_verify_paths(ctx)))
 736                 {
 737                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
 738                 ERR_print_errors(bio_err);
 739                 /* goto end; */
 740                 }
 741
 742         store = SSL_CTX_get_cert_store(ctx);
 743         X509_STORE_set_flags(store, vflags);
 744 #ifndef OPENSSL_NO_TLSEXT
 745         if (servername != NULL)
 746                 {
 747                 tlsextcbp.biodebug = bio_err;
 748                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
 749                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
 750                 }
 751 #endif
 752
 753         con=SSL_new(ctx);
 754         if (sess_in)
 755                 {
 756                 SSL_SESSION *sess;
 757                 BIO *stmp = BIO_new_file(sess_in, "r");
 758                 if (!stmp)
 759                         {
 760                         BIO_printf(bio_err, "Can't open session file %s\n",
 761                                                 sess_in);
 762                         ERR_print_errors(bio_err);
 763                         goto end;
 764                         }
 765                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
 766                 BIO_free(stmp);
 767                 if (!sess)
 768                         {
 769                         BIO_printf(bio_err, "Can't open session file %s\n",
 770                                                 sess_in);
 771                         ERR_print_errors(bio_err);
 772                         goto end;
 773                         }
 774                 SSL_set_session(con, sess);
 775                 SSL_SESSION_free(sess);
 776                 }
 777 #ifndef OPENSSL_NO_TLSEXT
 778         if (servername != NULL)
 779                 {
 780                 if (!SSL_set_tlsext_host_name(con,servername))
 781                         {
 782                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
 783                         ERR_print_errors(bio_err);
 784                         goto end;
 785                         }
 786                 }
 787 #endif
 788
 789 #ifndef OPENSSL_NO_KRB5
 790         if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
 791                 {
 792                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
 793                 }
 794 #endif  /* OPENSSL_NO_KRB5  */
 795 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 796
 797 re_start:
 798
 799         if (init_client(&s,host,port,sock_type) == 0)
 800                 {
 801                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 802                 SHUTDOWN(s);
 803                 goto end;
 804                 }
 805         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 806
 807 #ifdef FIONBIO
 808         if (c_nbio)
 809                 {
 810                 unsigned long l=1;
 811                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 812                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 813                         {
 814                         ERR_print_errors(bio_err);
 815                         goto end;
 816                         }
 817                 }
 818 #endif
 819         if (c_Pause & 0x01) con->debug=1;
 820
 821         if ( SSL_version(con) == DTLS1_VERSION)
 822                 {
 823
 824                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
 825                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
 826                         {
 827                         BIO_printf(bio_err, "getsockname:errno=%d\n",
 828                                 get_last_socket_error());
 829                         SHUTDOWN(s);
 830                         goto end;
 831                         }
 832
 833                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
 834
 835                 if ( enable_timeouts)
 836                         {
 837                         timeout.tv_sec = 0;
 838                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
 839                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
 840
 841                         timeout.tv_sec = 0;
 842                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
 843                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
 844                         }
 845
 846                 if (socket_mtu > 28)
 847                         {
 848                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
 849                         SSL_set_mtu(con, socket_mtu - 28);
 850                         }
 851                 else
 852                         /* want to do MTU discovery */
 853                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
 854                 }
 855         else
 856                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
 857
 858         if (nbio_test)
 859                 {
 860                 BIO *test;
 861
 862                 test=BIO_new(BIO_f_nbio_test());
 863                 sbio=BIO_push(test,sbio);
 864                 }
 865
 866         if (c_debug)
 867                 {
 868                 con->debug=1;
 869                 BIO_set_callback(sbio,bio_dump_callback);
 870                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
 871                 }
 872         if (c_msg)
 873                 {
 874                 SSL_set_msg_callback(con, msg_cb);
 875                 SSL_set_msg_callback_arg(con, bio_c_out);
 876                 }
 877 #ifndef OPENSSL_NO_TLSEXT
 878         if (c_tlsextdebug)
 879                 {
 880                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
 881                 SSL_set_tlsext_debug_arg(con, bio_c_out);
 882                 }
 883         if (c_status_req)
 884                 {
 885                 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
 886                 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
 887                 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
 888 #if 0
 889 {
 890 STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
 891 OCSP_RESPID *id = OCSP_RESPID_new();
 892 id->value.byKey = ASN1_OCTET_STRING_new();
 893 id->type = V_OCSP_RESPID_KEY;
 894 ASN1_STRING_set(id->value.byKey, "Hello World", -1);
 895 sk_OCSP_RESPID_push(ids, id);
 896 SSL_set_tlsext_status_ids(con, ids);
 897 }
 898 #endif
 899                 }
 900 #endif
 901 #ifndef OPENSSL_NO_JPAKE
 902         if (jpake_secret)
 903                 jpake_client_auth(bio_c_out, sbio, jpake_secret);
 904 #endif
 905
 906         SSL_set_bio(con,sbio,sbio);
 907         SSL_set_connect_state(con);
 908
 909         /* ok, lets connect */
 910         width=SSL_get_fd(con)+1;
 911
 912         read_tty=1;
 913         write_tty=0;
 914         tty_on=0;
 915         read_ssl=1;
 916         write_ssl=1;
 917
 918         cbuf_len=0;
 919         cbuf_off=0;
 920         sbuf_len=0;
 921         sbuf_off=0;
 922
 923         /* This is an ugly hack that does a lot of assumptions */
 924         /* We do have to handle multi-line responses which may come
 925            in a single packet or not. We therefore have to use
 926            BIO_gets() which does need a buffering BIO. So during
 927            the initial chitchat we do push a buffering BIO into the
 928            chain that is removed again later on to not disturb the
 929            rest of the s_client operation. */
 930         if (starttls_proto == PROTO_SMTP)
 931                 {
 932                 int foundit=0;
 933                 BIO *fbio = BIO_new(BIO_f_buffer());
 934                 BIO_push(fbio, sbio);
 935                 /* wait for multi-line response to end from SMTP */
 936                 do
 937                         {
 938                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
 939                         }
 940                 while (mbuf_len>3 && mbuf[3]=='-');
 941                 /* STARTTLS command requires EHLO... */
 942                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
 943                 (void)BIO_flush(fbio);
 944                 /* wait for multi-line response to end EHLO SMTP response */
 945                 do
 946                         {
 947                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
 948                         if (strstr(mbuf,"STARTTLS"))
 949                                 foundit=1;
 950                         }
 951                 while (mbuf_len>3 && mbuf[3]=='-');
 952                 (void)BIO_flush(fbio);
 953                 BIO_pop(fbio);
 954                 BIO_free(fbio);
 955                 if (!foundit)
 956                         BIO_printf(bio_err,
 957                                    "didn't found starttls in server response,"
 958                                    " try anyway...\n");
 959                 BIO_printf(sbio,"STARTTLS\r\n");
 960                 BIO_read(sbio,sbuf,BUFSIZZ);
 961                 }
 962         else if (starttls_proto == PROTO_POP3)
 963                 {
 964                 BIO_read(sbio,mbuf,BUFSIZZ);
 965                 BIO_printf(sbio,"STLS\r\n");
 966                 BIO_read(sbio,sbuf,BUFSIZZ);
 967                 }
 968         else if (starttls_proto == PROTO_IMAP)
 969                 {
 970                 int foundit=0;
 971                 BIO *fbio = BIO_new(BIO_f_buffer());
 972                 BIO_push(fbio, sbio);
 973                 BIO_gets(fbio,mbuf,BUFSIZZ);
 974                 /* STARTTLS command requires CAPABILITY... */
 975                 BIO_printf(fbio,". CAPABILITY\r\n");
 976                 (void)BIO_flush(fbio);
 977                 /* wait for multi-line CAPABILITY response */
 978                 do
 979                         {
 980                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
 981                         if (strstr(mbuf,"STARTTLS"))
 982                                 foundit=1;
 983                         }
 984                 while (mbuf_len>3 && mbuf[0]!='.');
 985                 (void)BIO_flush(fbio);
 986                 BIO_pop(fbio);
 987                 BIO_free(fbio);
 988                 if (!foundit)
 989                         BIO_printf(bio_err,
 990                                    "didn't found STARTTLS in server response,"
 991                                    " try anyway...\n");
 992                 BIO_printf(sbio,". STARTTLS\r\n");
 993                 BIO_read(sbio,sbuf,BUFSIZZ);
 994                 }
 995         else if (starttls_proto == PROTO_FTP)
 996                 {
 997                 BIO *fbio = BIO_new(BIO_f_buffer());
 998                 BIO_push(fbio, sbio);
 999                 /* wait for multi-line response to end from FTP */
1000                 do
1001                         {
1002                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1003                         }
1004                 while (mbuf_len>3 && mbuf[3]=='-');
1005                 (void)BIO_flush(fbio);
1006                 BIO_pop(fbio);
1007                 BIO_free(fbio);
1008                 BIO_printf(sbio,"AUTH TLS\r\n");
1009                 BIO_read(sbio,sbuf,BUFSIZZ);
1010                 }
1011         if (starttls_proto == PROTO_XMPP)
1012                 {
1013                 int seen = 0;
1014                 BIO_printf(sbio,"<stream:stream "
1015                     "xmlns:stream='http://etherx.jabber.org/streams' "
1016                     "xmlns='jabber:client' to='%s' version='1.0'>", host);
1017                 seen = BIO_read(sbio,mbuf,BUFSIZZ);
1018                 mbuf[seen] = 0;
1019                 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
1020                         {
1021                         if (strstr(mbuf, "/stream:features>"))
1022                                 goto shut;
1023                         seen = BIO_read(sbio,mbuf,BUFSIZZ);
1024                         mbuf[seen] = 0;
1025                         }
1026                 BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1027                 seen = BIO_read(sbio,sbuf,BUFSIZZ);
1028                 sbuf[seen] = 0;
1029                 if (!strstr(sbuf, "<proceed"))
1030                         goto shut;
1031                 mbuf[0] = 0;
1032                 }
1033
1034         for (;;)
1035                 {
1036                 FD_ZERO(&readfds);
1037                 FD_ZERO(&writefds);
1038
1039                 if ((SSL_version(con) == DTLS1_VERSION) &&
1040                         DTLSv1_get_timeout(con, &timeout))
1041                         timeoutp = &timeout;
1042                 else
1043                         timeoutp = NULL;
1044
1045                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1046                         {
1047                         in_init=1;
1048                         tty_on=0;
1049                         }
1050                 else
1051                         {
1052                         tty_on=1;
1053                         if (in_init)
1054                                 {
1055                                 in_init=0;
1056                                 if (sess_out)
1057                                         {
1058                                         BIO *stmp = BIO_new_file(sess_out, "w");
1059                                         if (stmp)
1060                                                 {
1061                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1062                                                 BIO_free(stmp);
1063                                                 }
1064                                         else
1065                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1066                                         }
1067                                 print_stuff(bio_c_out,con,full_log);
1068                                 if (full_log > 0) full_log--;
1069
1070                                 if (starttls_proto)
1071                                         {
1072                                         BIO_printf(bio_err,"%s",mbuf);
1073                                         /* We don't need to know any more */
1074                                         starttls_proto = PROTO_OFF;
1075                                         }
1076
1077                                 if (reconnect)
1078                                         {
1079                                         reconnect--;
1080                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1081                                         SSL_shutdown(con);
1082                                         SSL_set_connect_state(con);
1083                                         SHUTDOWN(SSL_get_fd(con));
1084                                         goto re_start;
1085                                         }
1086                                 }
1087                         }
1088
1089                 ssl_pending = read_ssl && SSL_pending(con);
1090
1091                 if (!ssl_pending)
1092                         {
1093 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)
1094                         if (tty_on)
1095                                 {
1096                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
1097                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
1098                                 }
1099                         if (read_ssl)
1100                                 FD_SET(SSL_get_fd(con),&readfds);
1101                         if (write_ssl)
1102                                 FD_SET(SSL_get_fd(con),&writefds);
1103 #else
1104                         if(!tty_on || !write_tty) {
1105                                 if (read_ssl)
1106                                         FD_SET(SSL_get_fd(con),&readfds);
1107                                 if (write_ssl)
1108                                         FD_SET(SSL_get_fd(con),&writefds);
1109                         }
1110 #endif
1111 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1112                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1113
1114                         /* Note: under VMS with SOCKETSHR the second parameter
1115                          * is currently of type (int *) whereas under other
1116                          * systems it is (void *) if you don't have a cast it
1117                          * will choke the compiler: if you do have a cast then
1118                          * you can either go for (int *) or (void *).
1119                          */
1120 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1121                         /* Under Windows/DOS we make the assumption that we can
1122                          * always write to the tty: therefore if we need to
1123                          * write to the tty we just fall through. Otherwise
1124                          * we timeout the select every second and see if there
1125                          * are any keypresses. Note: this is a hack, in a proper
1126                          * Windows application we wouldn't do this.
1127                          */
1128                         i=0;
1129                         if(!write_tty) {
1130                                 if(read_tty) {
1131                                         tv.tv_sec = 1;
1132                                         tv.tv_usec = 0;
1133                                         i=select(width,(void *)&readfds,(void *)&writefds,
1134                                                  NULL,&tv);
1135 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1136                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1137 #else
1138                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1139 #endif
1140                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1141                                          NULL,timeoutp);
1142                         }
1143 #elif defined(OPENSSL_SYS_NETWARE)
1144                         if(!write_tty) {
1145                                 if(read_tty) {
1146                                         tv.tv_sec = 1;
1147                                         tv.tv_usec = 0;
1148                                         i=select(width,(void *)&readfds,(void *)&writefds,
1149                                                 NULL,&tv);
1150                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1151                                         NULL,timeoutp);
1152                         }
1153 #else
1154                         i=select(width,(void *)&readfds,(void *)&writefds,
1155                                  NULL,timeoutp);
1156 #endif
1157                         if ( i < 0)
1158                                 {
1159                                 BIO_printf(bio_err,"bad select %d\n",
1160                                 get_last_socket_error());
1161                                 goto shut;
1162                                 /* goto end; */
1163                                 }
1164                         }
1165
1166                 if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
1167                         {
1168                         BIO_printf(bio_err,"TIMEOUT occured\n");
1169                         }
1170
1171                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1172                         {
1173                         k=SSL_write(con,&(cbuf[cbuf_off]),
1174                                 (unsigned int)cbuf_len);
1175                         switch (SSL_get_error(con,k))
1176                                 {
1177                         case SSL_ERROR_NONE:
1178                                 cbuf_off+=k;
1179                                 cbuf_len-=k;
1180                                 if (k <= 0) goto end;
1181                                 /* we have done a  write(con,NULL,0); */
1182                                 if (cbuf_len <= 0)
1183                                         {
1184                                         read_tty=1;
1185                                         write_ssl=0;
1186                                         }
1187                                 else /* if (cbuf_len > 0) */
1188                                         {
1189                                         read_tty=0;
1190                                         write_ssl=1;
1191                                         }
1192                                 break;
1193                         case SSL_ERROR_WANT_WRITE:
1194                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1195                                 write_ssl=1;
1196                                 read_tty=0;
1197                                 break;
1198                         case SSL_ERROR_WANT_READ:
1199                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1200                                 write_tty=0;
1201                                 read_ssl=1;
1202                                 write_ssl=0;
1203                                 break;
1204                         case SSL_ERROR_WANT_X509_LOOKUP:
1205                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1206                                 break;
1207                         case SSL_ERROR_ZERO_RETURN:
1208                                 if (cbuf_len != 0)
1209                                         {
1210                                         BIO_printf(bio_c_out,"shutdown\n");
1211                                         goto shut;
1212                                         }
1213                                 else
1214                                         {
1215                                         read_tty=1;
1216                                         write_ssl=0;
1217                                         break;
1218                                         }
1219
1220                         case SSL_ERROR_SYSCALL:
1221                                 if ((k != 0) || (cbuf_len != 0))
1222                                         {
1223                                         BIO_printf(bio_err,"write:errno=%d\n",
1224                                                 get_last_socket_error());
1225                                         goto shut;
1226                                         }
1227                                 else
1228                                         {
1229                                         read_tty=1;
1230                                         write_ssl=0;
1231                                         }
1232                                 break;
1233                         case SSL_ERROR_SSL:
1234                                 ERR_print_errors(bio_err);
1235                                 goto shut;
1236                                 }
1237                         }
1238 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
1239                 /* Assume Windows/DOS can always write */
1240                 else if (!ssl_pending && write_tty)
1241 #else
1242                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1243 #endif
1244                         {
1245 #ifdef CHARSET_EBCDIC
1246                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1247 #endif
1248                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
1249
1250                         if (i <= 0)
1251                                 {
1252                                 BIO_printf(bio_c_out,"DONE\n");
1253                                 goto shut;
1254                                 /* goto end; */
1255                                 }
1256
1257                         sbuf_len-=i;;
1258                         sbuf_off+=i;
1259                         if (sbuf_len <= 0)
1260                                 {
1261                                 read_ssl=1;
1262                                 write_tty=0;
1263                                 }
1264                         }
1265                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1266                         {
1267 #ifdef RENEG
1268 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1269 #endif
1270 #if 1
1271                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1272 #else
1273 /* Demo for pending and peek :-) */
1274                         k=SSL_read(con,sbuf,16);
1275 { char zbuf[10240];
1276 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1277 }
1278 #endif
1279
1280                         switch (SSL_get_error(con,k))
1281                                 {
1282                         case SSL_ERROR_NONE:
1283                                 if (k <= 0)
1284                                         goto end;
1285                                 sbuf_off=0;
1286                                 sbuf_len=k;
1287
1288                                 read_ssl=0;
1289                                 write_tty=1;
1290                                 break;
1291                         case SSL_ERROR_WANT_WRITE:
1292                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1293                                 write_ssl=1;
1294                                 read_tty=0;
1295                                 break;
1296                         case SSL_ERROR_WANT_READ:
1297                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1298                                 write_tty=0;
1299                                 read_ssl=1;
1300                                 if ((read_tty == 0) && (write_ssl == 0))
1301                                         write_ssl=1;
1302                                 break;
1303                         case SSL_ERROR_WANT_X509_LOOKUP:
1304                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1305                                 break;
1306                         case SSL_ERROR_SYSCALL:
1307                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
1308                                 goto shut;
1309                         case SSL_ERROR_ZERO_RETURN:
1310                                 BIO_printf(bio_c_out,"closed\n");
1311                                 goto shut;
1312                         case SSL_ERROR_SSL:
1313                                 ERR_print_errors(bio_err);
1314                                 goto shut;
1315                                 /* break; */
1316                                 }
1317                         }
1318
1319 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1320 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1321                 else if (_kbhit())
1322 #else
1323                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1324 #endif
1325 #elif defined (OPENSSL_SYS_NETWARE)
1326         else if (_kbhit())
1327 #else
1328                 else if (FD_ISSET(fileno(stdin),&readfds))
1329 #endif
1330                         {
1331                         if (crlf)
1332                                 {
1333                                 int j, lf_num;
1334
1335                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
1336                                 lf_num = 0;
1337                                 /* both loops are skipped when i <= 0 */
1338                                 for (j = 0; j < i; j++)
1339                                         if (cbuf[j] == '\n')
1340                                                 lf_num++;
1341                                 for (j = i-1; j >= 0; j--)
1342                                         {
1343                                         cbuf[j+lf_num] = cbuf[j];
1344                                         if (cbuf[j] == '\n')
1345                                                 {
1346                                                 lf_num--;
1347                                                 i++;
1348                                                 cbuf[j+lf_num] = '\r';
1349                                                 }
1350                                         }
1351                                 assert(lf_num == 0);
1352                                 }
1353                         else
1354                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
1355
1356                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1357                                 {
1358                                 BIO_printf(bio_err,"DONE\n");
1359                                 goto shut;
1360                                 }
1361
1362                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1363                                 {
1364                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1365                                 SSL_renegotiate(con);
1366                                 cbuf_len=0;
1367                                 }
1368                         else
1369                                 {
1370                                 cbuf_len=i;
1371                                 cbuf_off=0;
1372 #ifdef CHARSET_EBCDIC
1373                                 ebcdic2ascii(cbuf, cbuf, i);
1374 #endif
1375                                 }
1376
1377                         write_ssl=1;
1378                         read_tty=0;
1379                         }
1380                 }
1381 shut:
1382         SSL_shutdown(con);
1383         SHUTDOWN(SSL_get_fd(con));
1384         ret=0;
1385 end:
1386         if(prexit) print_stuff(bio_c_out,con,1);
1387         if (con != NULL) SSL_free(con);
1388         if (con2 != NULL) SSL_free(con2);
1389         if (ctx != NULL) SSL_CTX_free(ctx);
1390         if (cert)
1391                 X509_free(cert);
1392         if (key)
1393                 EVP_PKEY_free(key);
1394         if (pass)
1395                 OPENSSL_free(pass);
1396         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1397         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1398         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1399         if (bio_c_out != NULL)
1400                 {
1401                 BIO_free(bio_c_out);
1402                 bio_c_out=NULL;
1403                 }
1404         apps_shutdown();
1405         OPENSSL_EXIT(ret);
1406         }
1407
1408
1409 static void print_stuff(BIO *bio, SSL *s, int full)
1410         {
1411         X509 *peer=NULL;
1412         char *p;
1413         static const char *space="                ";
1414         char buf[BUFSIZ];
1415         STACK_OF(X509) *sk;
1416         STACK_OF(X509_NAME) *sk2;
1417         SSL_CIPHER *c;
1418         X509_NAME *xn;
1419         int j,i;
1420 #ifndef OPENSSL_NO_COMP
1421         const COMP_METHOD *comp, *expansion;
1422 #endif
1423
1424         if (full)
1425                 {
1426                 int got_a_chain = 0;
1427
1428                 sk=SSL_get_peer_cert_chain(s);
1429                 if (sk != NULL)
1430                         {
1431                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1432
1433                         BIO_printf(bio,"---\nCertificate chain\n");
1434                         for (i=0; i<sk_X509_num(sk); i++)
1435                                 {
1436                                 X509_NAME_oneline(X509_get_subject_name(
1437                                         sk_X509_value(sk,i)),buf,sizeof buf);
1438                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1439                                 X509_NAME_oneline(X509_get_issuer_name(
1440                                         sk_X509_value(sk,i)),buf,sizeof buf);
1441                                 BIO_printf(bio,"   i:%s\n",buf);
1442                                 if (c_showcerts)
1443                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1444                                 }
1445                         }
1446
1447                 BIO_printf(bio,"---\n");
1448                 peer=SSL_get_peer_certificate(s);
1449                 if (peer != NULL)
1450                         {
1451                         BIO_printf(bio,"Server certificate\n");
1452                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1453                                 PEM_write_bio_X509(bio,peer);
1454                         X509_NAME_oneline(X509_get_subject_name(peer),
1455                                 buf,sizeof buf);
1456                         BIO_printf(bio,"subject=%s\n",buf);
1457                         X509_NAME_oneline(X509_get_issuer_name(peer),
1458                                 buf,sizeof buf);
1459                         BIO_printf(bio,"issuer=%s\n",buf);
1460                         }
1461                 else
1462                         BIO_printf(bio,"no peer certificate available\n");
1463
1464                 sk2=SSL_get_client_CA_list(s);
1465                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
1466                         {
1467                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
1468                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
1469                                 {
1470                                 xn=sk_X509_NAME_value(sk2,i);
1471                                 X509_NAME_oneline(xn,buf,sizeof(buf));
1472                                 BIO_write(bio,buf,strlen(buf));
1473                                 BIO_write(bio,"\n",1);
1474                                 }
1475                         }
1476                 else
1477                         {
1478                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
1479                         }
1480                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
1481                 if (p != NULL)
1482                         {
1483                         /* This works only for SSL 2.  In later protocol
1484                          * versions, the client does not know what other
1485                          * ciphers (in addition to the one to be used
1486                          * in the current connection) the server supports. */
1487
1488                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
1489                         j=i=0;
1490                         while (*p)
1491                                 {
1492                                 if (*p == ':')
1493                                         {
1494                                         BIO_write(bio,space,15-j%25);
1495                                         i++;
1496                                         j=0;
1497                                         BIO_write(bio,((i%3)?" ":"\n"),1);
1498                                         }
1499                                 else
1500                                         {
1501                                         BIO_write(bio,p,1);
1502                                         j++;
1503                                         }
1504                                 p++;
1505                                 }
1506                         BIO_write(bio,"\n",1);
1507                         }
1508
1509                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
1510                         BIO_number_read(SSL_get_rbio(s)),
1511                         BIO_number_written(SSL_get_wbio(s)));
1512                 }
1513         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
1514         c=SSL_get_current_cipher(s);
1515         BIO_printf(bio,"%s, Cipher is %s\n",
1516                 SSL_CIPHER_get_version(c),
1517                 SSL_CIPHER_get_name(c));
1518         if (peer != NULL) {
1519                 EVP_PKEY *pktmp;
1520                 pktmp = X509_get_pubkey(peer);
1521                 BIO_printf(bio,"Server public key is %d bit\n",
1522                                                          EVP_PKEY_bits(pktmp));
1523                 EVP_PKEY_free(pktmp);
1524         }
1525 #ifndef OPENSSL_NO_COMP
1526         comp=SSL_get_current_compression(s);
1527         expansion=SSL_get_current_expansion(s);
1528         BIO_printf(bio,"Compression: %s\n",
1529                 comp ? SSL_COMP_get_name(comp) : "NONE");
1530         BIO_printf(bio,"Expansion: %s\n",
1531                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
1532 #endif
1533         SSL_SESSION_print(bio,SSL_get_session(s));
1534         BIO_printf(bio,"---\n");
1535         if (peer != NULL)
1536                 X509_free(peer);
1537         /* flush, or debugging output gets mixed with http response */
1538         (void)BIO_flush(bio);
1539         }
1540
1541 #ifndef OPENSSL_NO_TLSEXT
1542
1543 static int ocsp_resp_cb(SSL *s, void *arg)
1544         {
1545         const unsigned char *p;
1546         int len;
1547         OCSP_RESPONSE *rsp;
1548         len = SSL_get_tlsext_status_ocsp_resp(s, &p);
1549         BIO_puts(arg, "OCSP response: ");
1550         if (!p)
1551                 {
1552                 BIO_puts(arg, "no response sent\n");
1553                 return 1;
1554                 }
1555         rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
1556         if (!rsp)
1557                 {
1558                 BIO_puts(arg, "response parse error\n");
1559                 BIO_dump_indent(arg, (char *)p, len, 4);
1560                 return 0;
1561                 }
1562         BIO_puts(arg, "\n======================================\n");
1563         OCSP_RESPONSE_print(arg, rsp, 0);
1564         BIO_puts(arg, "======================================\n");
1565         OCSP_RESPONSE_free(rsp);
1566         return 1;
1567         }
1568 #endif  /* ndef OPENSSL_NO_TLSEXT */