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         BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
 253         }
 254
 255 #ifndef OPENSSL_NO_TLSEXT
 256
 257 /* This is a context that we pass to callbacks */
 258 typedef struct tlsextctx_st {
 259    BIO * biodebug;
 260    int ack;
 261 } tlsextctx;
 262
 263
 264 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
 265         {
 266         tlsextctx * p = (tlsextctx *) arg;
 267         const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
 268         if (SSL_get_servername_type(s) != -1)
 269                 p->ack = !SSL_session_reused(s) && hn != NULL;
 270         else
 271                 BIO_printf(bio_err,"Can't use SSL_get_servername\n");
 272
 273         return SSL_TLSEXT_ERR_OK;
 274         }
 275 #endif
 276 enum
 277 {
 278         PROTO_OFF       = 0,
 279         PROTO_SMTP,
 280         PROTO_POP3,
 281         PROTO_IMAP,
 282         PROTO_FTP,
 283         PROTO_XMPP
 284 };
 285
 286 int MAIN(int, char **);
 287
 288 int MAIN(int argc, char **argv)
 289         {
 290         int off=0, clr = 0;
 291         SSL *con=NULL,*con2=NULL;
 292         X509_STORE *store = NULL;
 293         int s,k,width,state=0;
 294         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
 295         int cbuf_len,cbuf_off;
 296         int sbuf_len,sbuf_off;
 297         fd_set readfds,writefds;
 298         short port=PORT;
 299         int full_log=1;
 300         char *host=SSL_HOST_NAME;
 301         char *cert_file=NULL,*key_file=NULL;
 302         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
 303         char *passarg = NULL, *pass = NULL;
 304         X509 *cert = NULL;
 305         EVP_PKEY *key = NULL;
 306         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 307         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 308         int crlf=0;
 309         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 310         SSL_CTX *ctx=NULL;
 311         int ret=1,in_init=1,i,nbio_test=0;
 312         int starttls_proto = PROTO_OFF;
 313         int prexit = 0, vflags = 0;
 314         SSL_METHOD *meth=NULL;
 315 #ifdef sock_type
 316 #undef sock_type
 317 #endif
 318         int sock_type=SOCK_STREAM;
 319         BIO *sbio;
 320         char *inrand=NULL;
 321         int mbuf_len=0;
 322         struct timeval timeout, *timeoutp;
 323 #ifndef OPENSSL_NO_ENGINE
 324         char *engine_id=NULL;
 325         char *ssl_client_engine_id=NULL;
 326         ENGINE *ssl_client_engine=NULL;
 327 #endif
 328         ENGINE *e=NULL;
 329 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
 330         struct timeval tv;
 331 #endif
 332
 333 #ifndef OPENSSL_NO_TLSEXT
 334         char *servername = NULL;
 335         tlsextctx tlsextcbp =
 336         {NULL,0};
 337 #endif
 338         char *sess_in = NULL;
 339         char *sess_out = NULL;
 340         struct sockaddr peer;
 341         int peerlen = sizeof(peer);
 342         int enable_timeouts = 0 ;
 343         long socket_mtu = 0;
 344 #ifndef OPENSSL_NO_JPAKE
 345         char *jpake_secret = NULL;
 346 #endif
 347
 348 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 349         meth=SSLv23_client_method();
 350 #elif !defined(OPENSSL_NO_SSL3)
 351         meth=SSLv3_client_method();
 352 #elif !defined(OPENSSL_NO_SSL2)
 353         meth=SSLv2_client_method();
 354 #endif
 355
 356         apps_startup();
 357         c_Pause=0;
 358         c_quiet=0;
 359         c_ign_eof=0;
 360         c_debug=0;
 361         c_msg=0;
 362         c_showcerts=0;
 363
 364         if (bio_err == NULL)
 365                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 366
 367         if (!load_config(bio_err, NULL))
 368                 goto end;
 369
 370         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 371                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 372                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 373                 {
 374                 BIO_printf(bio_err,"out of memory\n");
 375                 goto end;
 376                 }
 377
 378         verify_depth=0;
 379         verify_error=X509_V_OK;
 380 #ifdef FIONBIO
 381         c_nbio=0;
 382 #endif
 383
 384         argc--;
 385         argv++;
 386         while (argc >= 1)
 387                 {
 388                 if      (strcmp(*argv,"-host") == 0)
 389                         {
 390                         if (--argc < 1) goto bad;
 391                         host= *(++argv);
 392                         }
 393                 else if (strcmp(*argv,"-port") == 0)
 394                         {
 395                         if (--argc < 1) goto bad;
 396                         port=atoi(*(++argv));
 397                         if (port == 0) goto bad;
 398                         }
 399                 else if (strcmp(*argv,"-connect") == 0)
 400                         {
 401                         if (--argc < 1) goto bad;
 402                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 403                                 goto bad;
 404                         }
 405                 else if (strcmp(*argv,"-verify") == 0)
 406                         {
 407                         verify=SSL_VERIFY_PEER;
 408                         if (--argc < 1) goto bad;
 409                         verify_depth=atoi(*(++argv));
 410                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 411                         }
 412                 else if (strcmp(*argv,"-cert") == 0)
 413                         {
 414                         if (--argc < 1) goto bad;
 415                         cert_file= *(++argv);
 416                         }
 417                 else if (strcmp(*argv,"-sess_out") == 0)
 418                         {
 419                         if (--argc < 1) goto bad;
 420                         sess_out = *(++argv);
 421                         }
 422                 else if (strcmp(*argv,"-sess_in") == 0)
 423                         {
 424                         if (--argc < 1) goto bad;
 425                         sess_in = *(++argv);
 426                         }
 427                 else if (strcmp(*argv,"-certform") == 0)
 428                         {
 429                         if (--argc < 1) goto bad;
 430                         cert_format = str2fmt(*(++argv));
 431                         }
 432                 else if (strcmp(*argv,"-crl_check") == 0)
 433                         vflags |= X509_V_FLAG_CRL_CHECK;
 434                 else if (strcmp(*argv,"-crl_check_all") == 0)
 435                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
 436                 else if (strcmp(*argv,"-prexit") == 0)
 437                         prexit=1;
 438                 else if (strcmp(*argv,"-crlf") == 0)
 439                         crlf=1;
 440                 else if (strcmp(*argv,"-quiet") == 0)
 441                         {
 442                         c_quiet=1;
 443                         c_ign_eof=1;
 444                         }
 445                 else if (strcmp(*argv,"-ign_eof") == 0)
 446                         c_ign_eof=1;
 447                 else if (strcmp(*argv,"-no_ign_eof") == 0)
 448                         c_ign_eof=0;
 449                 else if (strcmp(*argv,"-pause") == 0)
 450                         c_Pause=1;
 451                 else if (strcmp(*argv,"-debug") == 0)
 452                         c_debug=1;
 453 #ifndef OPENSSL_NO_TLSEXT
 454                 else if (strcmp(*argv,"-tlsextdebug") == 0)
 455                         c_tlsextdebug=1;
 456                 else if (strcmp(*argv,"-status") == 0)
 457                         c_status_req=1;
 458 #endif
 459 #ifdef WATT32
 460                 else if (strcmp(*argv,"-wdebug") == 0)
 461                         dbug_init();
 462 #endif
 463                 else if (strcmp(*argv,"-msg") == 0)
 464                         c_msg=1;
 465                 else if (strcmp(*argv,"-showcerts") == 0)
 466                         c_showcerts=1;
 467                 else if (strcmp(*argv,"-nbio_test") == 0)
 468                         nbio_test=1;
 469                 else if (strcmp(*argv,"-state") == 0)
 470                         state=1;
 471 #ifndef OPENSSL_NO_SSL2
 472                 else if (strcmp(*argv,"-ssl2") == 0)
 473                         meth=SSLv2_client_method();
 474 #endif
 475 #ifndef OPENSSL_NO_SSL3
 476                 else if (strcmp(*argv,"-ssl3") == 0)
 477                         meth=SSLv3_client_method();
 478 #endif
 479 #ifndef OPENSSL_NO_TLS1
 480                 else if (strcmp(*argv,"-tls1") == 0)
 481                         meth=TLSv1_client_method();
 482 #endif
 483 #ifndef OPENSSL_NO_DTLS1
 484                 else if (strcmp(*argv,"-dtls1") == 0)
 485                         {
 486                         meth=DTLSv1_client_method();
 487                         sock_type=SOCK_DGRAM;
 488                         }
 489                 else if (strcmp(*argv,"-timeout") == 0)
 490                         enable_timeouts=1;
 491                 else if (strcmp(*argv,"-mtu") == 0)
 492                         {
 493                         if (--argc < 1) goto bad;
 494                         socket_mtu = atol(*(++argv));
 495                         }
 496 #endif
 497                 else if (strcmp(*argv,"-bugs") == 0)
 498                         bugs=1;
 499                 else if (strcmp(*argv,"-keyform") == 0)
 500                         {
 501                         if (--argc < 1) goto bad;
 502                         key_format = str2fmt(*(++argv));
 503                         }
 504                 else if (strcmp(*argv,"-pass") == 0)
 505                         {
 506                         if (--argc < 1) goto bad;
 507                         passarg = *(++argv);
 508                         }
 509                 else if (strcmp(*argv,"-key") == 0)
 510                         {
 511                         if (--argc < 1) goto bad;
 512                         key_file= *(++argv);
 513                         }
 514                 else if (strcmp(*argv,"-reconnect") == 0)
 515                         {
 516                         reconnect=5;
 517                         }
 518                 else if (strcmp(*argv,"-CApath") == 0)
 519                         {
 520                         if (--argc < 1) goto bad;
 521                         CApath= *(++argv);
 522                         }
 523                 else if (strcmp(*argv,"-CAfile") == 0)
 524                         {
 525                         if (--argc < 1) goto bad;
 526                         CAfile= *(++argv);
 527                         }
 528                 else if (strcmp(*argv,"-no_tls1") == 0)
 529                         off|=SSL_OP_NO_TLSv1;
 530                 else if (strcmp(*argv,"-no_ssl3") == 0)
 531                         off|=SSL_OP_NO_SSLv3;
 532                 else if (strcmp(*argv,"-no_ssl2") == 0)
 533                         off|=SSL_OP_NO_SSLv2;
 534 #ifndef OPENSSL_NO_TLSEXT
 535                 else if (strcmp(*argv,"-no_ticket") == 0)
 536                         { off|=SSL_OP_NO_TICKET; }
 537 #endif
 538                 else if (strcmp(*argv,"-serverpref") == 0)
 539                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 540                 else if (strcmp(*argv,"-legacy_renegotiation") == 0)
 541                         off|=SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
 542                 else if (strcmp(*argv,"-legacy_server_connect") == 0)
 543                         { off|=SSL_OP_LEGACY_SERVER_CONNECT; }
 544                 else if (strcmp(*argv,"-no_legacy_server_connect") == 0)
 545                         { clr|=SSL_OP_LEGACY_SERVER_CONNECT; }
 546                 else if (strcmp(*argv,"-cipher") == 0)
 547                         {
 548                         if (--argc < 1) goto bad;
 549                         cipher= *(++argv);
 550                         }
 551 #ifdef FIONBIO
 552                 else if (strcmp(*argv,"-nbio") == 0)
 553                         { c_nbio=1; }
 554 #endif
 555                 else if (strcmp(*argv,"-starttls") == 0)
 556                         {
 557                         if (--argc < 1) goto bad;
 558                         ++argv;
 559                         if (strcmp(*argv,"smtp") == 0)
 560                                 starttls_proto = PROTO_SMTP;
 561                         else if (strcmp(*argv,"pop3") == 0)
 562                                 starttls_proto = PROTO_POP3;
 563                         else if (strcmp(*argv,"imap") == 0)
 564                                 starttls_proto = PROTO_IMAP;
 565                         else if (strcmp(*argv,"ftp") == 0)
 566                                 starttls_proto = PROTO_FTP;
 567                         else if (strcmp(*argv, "xmpp") == 0)
 568                                 starttls_proto = PROTO_XMPP;
 569                         else
 570                                 goto bad;
 571                         }
 572 #ifndef OPENSSL_NO_ENGINE
 573                 else if (strcmp(*argv,"-engine") == 0)
 574                         {
 575                         if (--argc < 1) goto bad;
 576                         engine_id = *(++argv);
 577                         }
 578                 else if (strcmp(*argv,"-ssl_client_engine") == 0)
 579                         {
 580                         if (--argc < 1) goto bad;
 581                         ssl_client_engine_id = *(++argv);
 582                         }
 583 #endif
 584                 else if (strcmp(*argv,"-rand") == 0)
 585                         {
 586                         if (--argc < 1) goto bad;
 587                         inrand= *(++argv);
 588                         }
 589 #ifndef OPENSSL_NO_TLSEXT
 590                 else if (strcmp(*argv,"-servername") == 0)
 591                         {
 592                         if (--argc < 1) goto bad;
 593                         servername= *(++argv);
 594                         /* meth=TLSv1_client_method(); */
 595                         }
 596 #endif
 597 #ifndef OPENSSL_NO_JPAKE
 598                 else if (strcmp(*argv,"-jpake") == 0)
 599                         {
 600                         if (--argc < 1) goto bad;
 601                         jpake_secret = *++argv;
 602                         }
 603 #endif
 604                 else
 605                         {
 606                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 607                         badop=1;
 608                         break;
 609                         }
 610                 argc--;
 611                 argv++;
 612                 }
 613         if (badop)
 614                 {
 615 bad:
 616                 sc_usage();
 617                 goto end;
 618                 }
 619
 620         OpenSSL_add_ssl_algorithms();
 621         SSL_load_error_strings();
 622
 623 #ifndef OPENSSL_NO_ENGINE
 624         e = setup_engine(bio_err, engine_id, 1);
 625         if (ssl_client_engine_id)
 626                 {
 627                 ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
 628                 if (!ssl_client_engine)
 629                         {
 630                         BIO_printf(bio_err,
 631                                         "Error getting client auth engine\n");
 632                         goto end;
 633                         }
 634                 }
 635 #endif
 636         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
 637                 {
 638                 BIO_printf(bio_err, "Error getting password\n");
 639                 goto end;
 640                 }
 641
 642         if (key_file == NULL)
 643                 key_file = cert_file;
 644
 645
 646         if (key_file)
 647
 648                 {
 649
 650                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
 651                                "client certificate private key file");
 652                 if (!key)
 653                         {
 654                         ERR_print_errors(bio_err);
 655                         goto end;
 656                         }
 657
 658                 }
 659
 660         if (cert_file)
 661
 662                 {
 663                 cert = load_cert(bio_err,cert_file,cert_format,
 664                                 NULL, e, "client certificate file");
 665
 666                 if (!cert)
 667                         {
 668                         ERR_print_errors(bio_err);
 669                         goto end;
 670                         }
 671                 }
 672
 673         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
 674                 && !RAND_status())
 675                 {
 676                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 677                 }
 678         if (inrand != NULL)
 679                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 680                         app_RAND_load_files(inrand));
 681
 682         if (bio_c_out == NULL)
 683                 {
 684                 if (c_quiet && !c_debug && !c_msg)
 685                         {
 686                         bio_c_out=BIO_new(BIO_s_null());
 687                         }
 688                 else
 689                         {
 690                         if (bio_c_out == NULL)
 691                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 692                         }
 693                 }
 694
 695         ctx=SSL_CTX_new(meth);
 696         if (ctx == NULL)
 697                 {
 698                 ERR_print_errors(bio_err);
 699                 goto end;
 700                 }
 701
 702 #ifndef OPENSSL_NO_ENGINE
 703         if (ssl_client_engine)
 704                 {
 705                 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
 706                         {
 707                         BIO_puts(bio_err, "Error setting client auth engine\n");
 708                         ERR_print_errors(bio_err);
 709                         ENGINE_free(ssl_client_engine);
 710                         goto end;
 711                         }
 712                 ENGINE_free(ssl_client_engine);
 713                 }
 714 #endif
 715
 716         if (bugs)
 717                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 718         else
 719                 SSL_CTX_set_options(ctx,off);
 720
 721         if (clr)
 722                 SSL_CTX_clear_options(ctx, clr);
 723         /* DTLS: partial reads end up discarding unread UDP bytes :-(
 724          * Setting read ahead solves this problem.
 725          */
 726         if (sock_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
 727
 728         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 729         if (cipher != NULL)
 730                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
 731                 BIO_printf(bio_err,"error setting cipher list\n");
 732                 ERR_print_errors(bio_err);
 733                 goto end;
 734         }
 735 #if 0
 736         else
 737                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 738 #endif
 739
 740         SSL_CTX_set_verify(ctx,verify,verify_callback);
 741         if (!set_cert_key_stuff(ctx,cert,key))
 742                 goto end;
 743
 744         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 745                 (!SSL_CTX_set_default_verify_paths(ctx)))
 746                 {
 747                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
 748                 ERR_print_errors(bio_err);
 749                 /* goto end; */
 750                 }
 751
 752         store = SSL_CTX_get_cert_store(ctx);
 753         X509_STORE_set_flags(store, vflags);
 754 #ifndef OPENSSL_NO_TLSEXT
 755         if (servername != NULL)
 756                 {
 757                 tlsextcbp.biodebug = bio_err;
 758                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
 759                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
 760                 }
 761 #endif
 762
 763         con=SSL_new(ctx);
 764         if (sess_in)
 765                 {
 766                 SSL_SESSION *sess;
 767                 BIO *stmp = BIO_new_file(sess_in, "r");
 768                 if (!stmp)
 769                         {
 770                         BIO_printf(bio_err, "Can't open session file %s\n",
 771                                                 sess_in);
 772                         ERR_print_errors(bio_err);
 773                         goto end;
 774                         }
 775                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
 776                 BIO_free(stmp);
 777                 if (!sess)
 778                         {
 779                         BIO_printf(bio_err, "Can't open session file %s\n",
 780                                                 sess_in);
 781                         ERR_print_errors(bio_err);
 782                         goto end;
 783                         }
 784                 SSL_set_session(con, sess);
 785                 SSL_SESSION_free(sess);
 786                 }
 787 #ifndef OPENSSL_NO_TLSEXT
 788         if (servername != NULL)
 789                 {
 790                 if (!SSL_set_tlsext_host_name(con,servername))
 791                         {
 792                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
 793                         ERR_print_errors(bio_err);
 794                         goto end;
 795                         }
 796                 }
 797 #endif
 798
 799 #ifndef OPENSSL_NO_KRB5
 800         if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
 801                 {
 802                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
 803                 }
 804 #endif  /* OPENSSL_NO_KRB5  */
 805 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 806
 807 re_start:
 808
 809         if (init_client(&s,host,port,sock_type) == 0)
 810                 {
 811                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 812                 SHUTDOWN(s);
 813                 goto end;
 814                 }
 815         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 816
 817 #ifdef FIONBIO
 818         if (c_nbio)
 819                 {
 820                 unsigned long l=1;
 821                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 822                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 823                         {
 824                         ERR_print_errors(bio_err);
 825                         goto end;
 826                         }
 827                 }
 828 #endif
 829         if (c_Pause & 0x01) con->debug=1;
 830
 831         if ( SSL_version(con) == DTLS1_VERSION)
 832                 {
 833
 834                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
 835                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
 836                         {
 837                         BIO_printf(bio_err, "getsockname:errno=%d\n",
 838                                 get_last_socket_error());
 839                         SHUTDOWN(s);
 840                         goto end;
 841                         }
 842
 843                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
 844
 845                 if ( enable_timeouts)
 846                         {
 847                         timeout.tv_sec = 0;
 848                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
 849                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
 850
 851                         timeout.tv_sec = 0;
 852                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
 853                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
 854                         }
 855
 856                 if (socket_mtu > 28)
 857                         {
 858                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
 859                         SSL_set_mtu(con, socket_mtu - 28);
 860                         }
 861                 else
 862                         /* want to do MTU discovery */
 863                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
 864                 }
 865         else
 866                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
 867
 868         if (nbio_test)
 869                 {
 870                 BIO *test;
 871
 872                 test=BIO_new(BIO_f_nbio_test());
 873                 sbio=BIO_push(test,sbio);
 874                 }
 875
 876         if (c_debug)
 877                 {
 878                 con->debug=1;
 879                 BIO_set_callback(sbio,bio_dump_callback);
 880                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
 881                 }
 882         if (c_msg)
 883                 {
 884                 SSL_set_msg_callback(con, msg_cb);
 885                 SSL_set_msg_callback_arg(con, bio_c_out);
 886                 }
 887 #ifndef OPENSSL_NO_TLSEXT
 888         if (c_tlsextdebug)
 889                 {
 890                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
 891                 SSL_set_tlsext_debug_arg(con, bio_c_out);
 892                 }
 893         if (c_status_req)
 894                 {
 895                 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
 896                 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
 897                 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
 898 #if 0
 899 {
 900 STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
 901 OCSP_RESPID *id = OCSP_RESPID_new();
 902 id->value.byKey = ASN1_OCTET_STRING_new();
 903 id->type = V_OCSP_RESPID_KEY;
 904 ASN1_STRING_set(id->value.byKey, "Hello World", -1);
 905 sk_OCSP_RESPID_push(ids, id);
 906 SSL_set_tlsext_status_ids(con, ids);
 907 }
 908 #endif
 909                 }
 910 #endif
 911 #ifndef OPENSSL_NO_JPAKE
 912         if (jpake_secret)
 913                 jpake_client_auth(bio_c_out, sbio, jpake_secret);
 914 #endif
 915
 916         SSL_set_bio(con,sbio,sbio);
 917         SSL_set_connect_state(con);
 918
 919         /* ok, lets connect */
 920         width=SSL_get_fd(con)+1;
 921
 922         read_tty=1;
 923         write_tty=0;
 924         tty_on=0;
 925         read_ssl=1;
 926         write_ssl=1;
 927
 928         cbuf_len=0;
 929         cbuf_off=0;
 930         sbuf_len=0;
 931         sbuf_off=0;
 932
 933         /* This is an ugly hack that does a lot of assumptions */
 934         /* We do have to handle multi-line responses which may come
 935            in a single packet or not. We therefore have to use
 936            BIO_gets() which does need a buffering BIO. So during
 937            the initial chitchat we do push a buffering BIO into the
 938            chain that is removed again later on to not disturb the
 939            rest of the s_client operation. */
 940         if (starttls_proto == PROTO_SMTP)
 941                 {
 942                 int foundit=0;
 943                 BIO *fbio = BIO_new(BIO_f_buffer());
 944                 BIO_push(fbio, sbio);
 945                 /* wait for multi-line response to end from SMTP */
 946                 do
 947                         {
 948                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
 949                         }
 950                 while (mbuf_len>3 && mbuf[3]=='-');
 951                 /* STARTTLS command requires EHLO... */
 952                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
 953                 (void)BIO_flush(fbio);
 954                 /* wait for multi-line response to end EHLO SMTP response */
 955                 do
 956                         {
 957                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
 958                         if (strstr(mbuf,"STARTTLS"))
 959                                 foundit=1;
 960                         }
 961                 while (mbuf_len>3 && mbuf[3]=='-');
 962                 (void)BIO_flush(fbio);
 963                 BIO_pop(fbio);
 964                 BIO_free(fbio);
 965                 if (!foundit)
 966                         BIO_printf(bio_err,
 967                                    "didn't found starttls in server response,"
 968                                    " try anyway...\n");
 969                 BIO_printf(sbio,"STARTTLS\r\n");
 970                 BIO_read(sbio,sbuf,BUFSIZZ);
 971                 }
 972         else if (starttls_proto == PROTO_POP3)
 973                 {
 974                 BIO_read(sbio,mbuf,BUFSIZZ);
 975                 BIO_printf(sbio,"STLS\r\n");
 976                 BIO_read(sbio,sbuf,BUFSIZZ);
 977                 }
 978         else if (starttls_proto == PROTO_IMAP)
 979                 {
 980                 int foundit=0;
 981                 BIO *fbio = BIO_new(BIO_f_buffer());
 982                 BIO_push(fbio, sbio);
 983                 BIO_gets(fbio,mbuf,BUFSIZZ);
 984                 /* STARTTLS command requires CAPABILITY... */
 985                 BIO_printf(fbio,". CAPABILITY\r\n");
 986                 (void)BIO_flush(fbio);
 987                 /* wait for multi-line CAPABILITY response */
 988                 do
 989                         {
 990                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
 991                         if (strstr(mbuf,"STARTTLS"))
 992                                 foundit=1;
 993                         }
 994                 while (mbuf_len>3 && mbuf[0]!='.');
 995                 (void)BIO_flush(fbio);
 996                 BIO_pop(fbio);
 997                 BIO_free(fbio);
 998                 if (!foundit)
 999                         BIO_printf(bio_err,
1000                                    "didn't found STARTTLS in server response,"
1001                                    " try anyway...\n");
1002                 BIO_printf(sbio,". STARTTLS\r\n");
1003                 BIO_read(sbio,sbuf,BUFSIZZ);
1004                 }
1005         else if (starttls_proto == PROTO_FTP)
1006                 {
1007                 BIO *fbio = BIO_new(BIO_f_buffer());
1008                 BIO_push(fbio, sbio);
1009                 /* wait for multi-line response to end from FTP */
1010                 do
1011                         {
1012                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1013                         }
1014                 while (mbuf_len>3 && mbuf[3]=='-');
1015                 (void)BIO_flush(fbio);
1016                 BIO_pop(fbio);
1017                 BIO_free(fbio);
1018                 BIO_printf(sbio,"AUTH TLS\r\n");
1019                 BIO_read(sbio,sbuf,BUFSIZZ);
1020                 }
1021         if (starttls_proto == PROTO_XMPP)
1022                 {
1023                 int seen = 0;
1024                 BIO_printf(sbio,"<stream:stream "
1025                     "xmlns:stream='http://etherx.jabber.org/streams' "
1026                     "xmlns='jabber:client' to='%s' version='1.0'>", host);
1027                 seen = BIO_read(sbio,mbuf,BUFSIZZ);
1028                 mbuf[seen] = 0;
1029                 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
1030                         {
1031                         if (strstr(mbuf, "/stream:features>"))
1032                                 goto shut;
1033                         seen = BIO_read(sbio,mbuf,BUFSIZZ);
1034                         mbuf[seen] = 0;
1035                         }
1036                 BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1037                 seen = BIO_read(sbio,sbuf,BUFSIZZ);
1038                 sbuf[seen] = 0;
1039                 if (!strstr(sbuf, "<proceed"))
1040                         goto shut;
1041                 mbuf[0] = 0;
1042                 }
1043
1044         for (;;)
1045                 {
1046                 FD_ZERO(&readfds);
1047                 FD_ZERO(&writefds);
1048
1049                 if ((SSL_version(con) == DTLS1_VERSION) &&
1050                         DTLSv1_get_timeout(con, &timeout))
1051                         timeoutp = &timeout;
1052                 else
1053                         timeoutp = NULL;
1054
1055                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1056                         {
1057                         in_init=1;
1058                         tty_on=0;
1059                         }
1060                 else
1061                         {
1062                         tty_on=1;
1063                         if (in_init)
1064                                 {
1065                                 in_init=0;
1066                                 if (sess_out)
1067                                         {
1068                                         BIO *stmp = BIO_new_file(sess_out, "w");
1069                                         if (stmp)
1070                                                 {
1071                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1072                                                 BIO_free(stmp);
1073                                                 }
1074                                         else
1075                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1076                                         }
1077                                 print_stuff(bio_c_out,con,full_log);
1078                                 if (full_log > 0) full_log--;
1079
1080                                 if (starttls_proto)
1081                                         {
1082                                         BIO_printf(bio_err,"%s",mbuf);
1083                                         /* We don't need to know any more */
1084                                         starttls_proto = PROTO_OFF;
1085                                         }
1086
1087                                 if (reconnect)
1088                                         {
1089                                         reconnect--;
1090                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1091                                         SSL_shutdown(con);
1092                                         SSL_set_connect_state(con);
1093                                         SHUTDOWN(SSL_get_fd(con));
1094                                         goto re_start;
1095                                         }
1096                                 }
1097                         }
1098
1099                 ssl_pending = read_ssl && SSL_pending(con);
1100
1101                 if (!ssl_pending)
1102                         {
1103 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)
1104                         if (tty_on)
1105                                 {
1106                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
1107                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
1108                                 }
1109                         if (read_ssl)
1110                                 FD_SET(SSL_get_fd(con),&readfds);
1111                         if (write_ssl)
1112                                 FD_SET(SSL_get_fd(con),&writefds);
1113 #else
1114                         if(!tty_on || !write_tty) {
1115                                 if (read_ssl)
1116                                         FD_SET(SSL_get_fd(con),&readfds);
1117                                 if (write_ssl)
1118                                         FD_SET(SSL_get_fd(con),&writefds);
1119                         }
1120 #endif
1121 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1122                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1123
1124                         /* Note: under VMS with SOCKETSHR the second parameter
1125                          * is currently of type (int *) whereas under other
1126                          * systems it is (void *) if you don't have a cast it
1127                          * will choke the compiler: if you do have a cast then
1128                          * you can either go for (int *) or (void *).
1129                          */
1130 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1131                         /* Under Windows/DOS we make the assumption that we can
1132                          * always write to the tty: therefore if we need to
1133                          * write to the tty we just fall through. Otherwise
1134                          * we timeout the select every second and see if there
1135                          * are any keypresses. Note: this is a hack, in a proper
1136                          * Windows application we wouldn't do this.
1137                          */
1138                         i=0;
1139                         if(!write_tty) {
1140                                 if(read_tty) {
1141                                         tv.tv_sec = 1;
1142                                         tv.tv_usec = 0;
1143                                         i=select(width,(void *)&readfds,(void *)&writefds,
1144                                                  NULL,&tv);
1145 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1146                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1147 #else
1148                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1149 #endif
1150                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1151                                          NULL,timeoutp);
1152                         }
1153 #elif defined(OPENSSL_SYS_NETWARE)
1154                         if(!write_tty) {
1155                                 if(read_tty) {
1156                                         tv.tv_sec = 1;
1157                                         tv.tv_usec = 0;
1158                                         i=select(width,(void *)&readfds,(void *)&writefds,
1159                                                 NULL,&tv);
1160                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1161                                         NULL,timeoutp);
1162                         }
1163 #else
1164                         i=select(width,(void *)&readfds,(void *)&writefds,
1165                                  NULL,timeoutp);
1166 #endif
1167                         if ( i < 0)
1168                                 {
1169                                 BIO_printf(bio_err,"bad select %d\n",
1170                                 get_last_socket_error());
1171                                 goto shut;
1172                                 /* goto end; */
1173                                 }
1174                         }
1175
1176                 if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
1177                         {
1178                         BIO_printf(bio_err,"TIMEOUT occured\n");
1179                         }
1180
1181                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1182                         {
1183                         k=SSL_write(con,&(cbuf[cbuf_off]),
1184                                 (unsigned int)cbuf_len);
1185                         switch (SSL_get_error(con,k))
1186                                 {
1187                         case SSL_ERROR_NONE:
1188                                 cbuf_off+=k;
1189                                 cbuf_len-=k;
1190                                 if (k <= 0) goto end;
1191                                 /* we have done a  write(con,NULL,0); */
1192                                 if (cbuf_len <= 0)
1193                                         {
1194                                         read_tty=1;
1195                                         write_ssl=0;
1196                                         }
1197                                 else /* if (cbuf_len > 0) */
1198                                         {
1199                                         read_tty=0;
1200                                         write_ssl=1;
1201                                         }
1202                                 break;
1203                         case SSL_ERROR_WANT_WRITE:
1204                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1205                                 write_ssl=1;
1206                                 read_tty=0;
1207                                 break;
1208                         case SSL_ERROR_WANT_READ:
1209                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1210                                 write_tty=0;
1211                                 read_ssl=1;
1212                                 write_ssl=0;
1213                                 break;
1214                         case SSL_ERROR_WANT_X509_LOOKUP:
1215                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1216                                 break;
1217                         case SSL_ERROR_ZERO_RETURN:
1218                                 if (cbuf_len != 0)
1219                                         {
1220                                         BIO_printf(bio_c_out,"shutdown\n");
1221                                         goto shut;
1222                                         }
1223                                 else
1224                                         {
1225                                         read_tty=1;
1226                                         write_ssl=0;
1227                                         break;
1228                                         }
1229
1230                         case SSL_ERROR_SYSCALL:
1231                                 if ((k != 0) || (cbuf_len != 0))
1232                                         {
1233                                         BIO_printf(bio_err,"write:errno=%d\n",
1234                                                 get_last_socket_error());
1235                                         goto shut;
1236                                         }
1237                                 else
1238                                         {
1239                                         read_tty=1;
1240                                         write_ssl=0;
1241                                         }
1242                                 break;
1243                         case SSL_ERROR_SSL:
1244                                 ERR_print_errors(bio_err);
1245                                 goto shut;
1246                                 }
1247                         }
1248 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
1249                 /* Assume Windows/DOS can always write */
1250                 else if (!ssl_pending && write_tty)
1251 #else
1252                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1253 #endif
1254                         {
1255 #ifdef CHARSET_EBCDIC
1256                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1257 #endif
1258                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
1259
1260                         if (i <= 0)
1261                                 {
1262                                 BIO_printf(bio_c_out,"DONE\n");
1263                                 goto shut;
1264                                 /* goto end; */
1265                                 }
1266
1267                         sbuf_len-=i;;
1268                         sbuf_off+=i;
1269                         if (sbuf_len <= 0)
1270                                 {
1271                                 read_ssl=1;
1272                                 write_tty=0;
1273                                 }
1274                         }
1275                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1276                         {
1277 #ifdef RENEG
1278 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1279 #endif
1280 #if 1
1281                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1282 #else
1283 /* Demo for pending and peek :-) */
1284                         k=SSL_read(con,sbuf,16);
1285 { char zbuf[10240];
1286 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1287 }
1288 #endif
1289
1290                         switch (SSL_get_error(con,k))
1291                                 {
1292                         case SSL_ERROR_NONE:
1293                                 if (k <= 0)
1294                                         goto end;
1295                                 sbuf_off=0;
1296                                 sbuf_len=k;
1297
1298                                 read_ssl=0;
1299                                 write_tty=1;
1300                                 break;
1301                         case SSL_ERROR_WANT_WRITE:
1302                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1303                                 write_ssl=1;
1304                                 read_tty=0;
1305                                 break;
1306                         case SSL_ERROR_WANT_READ:
1307                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1308                                 write_tty=0;
1309                                 read_ssl=1;
1310                                 if ((read_tty == 0) && (write_ssl == 0))
1311                                         write_ssl=1;
1312                                 break;
1313                         case SSL_ERROR_WANT_X509_LOOKUP:
1314                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1315                                 break;
1316                         case SSL_ERROR_SYSCALL:
1317                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
1318                                 goto shut;
1319                         case SSL_ERROR_ZERO_RETURN:
1320                                 BIO_printf(bio_c_out,"closed\n");
1321                                 goto shut;
1322                         case SSL_ERROR_SSL:
1323                                 ERR_print_errors(bio_err);
1324                                 goto shut;
1325                                 /* break; */
1326                                 }
1327                         }
1328
1329 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1330 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1331                 else if (_kbhit())
1332 #else
1333                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1334 #endif
1335 #elif defined (OPENSSL_SYS_NETWARE)
1336         else if (_kbhit())
1337 #else
1338                 else if (FD_ISSET(fileno(stdin),&readfds))
1339 #endif
1340                         {
1341                         if (crlf)
1342                                 {
1343                                 int j, lf_num;
1344
1345                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
1346                                 lf_num = 0;
1347                                 /* both loops are skipped when i <= 0 */
1348                                 for (j = 0; j < i; j++)
1349                                         if (cbuf[j] == '\n')
1350                                                 lf_num++;
1351                                 for (j = i-1; j >= 0; j--)
1352                                         {
1353                                         cbuf[j+lf_num] = cbuf[j];
1354                                         if (cbuf[j] == '\n')
1355                                                 {
1356                                                 lf_num--;
1357                                                 i++;
1358                                                 cbuf[j+lf_num] = '\r';
1359                                                 }
1360                                         }
1361                                 assert(lf_num == 0);
1362                                 }
1363                         else
1364                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
1365
1366                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1367                                 {
1368                                 BIO_printf(bio_err,"DONE\n");
1369                                 goto shut;
1370                                 }
1371
1372                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1373                                 {
1374                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1375                                 SSL_renegotiate(con);
1376                                 cbuf_len=0;
1377                                 }
1378                         else
1379                                 {
1380                                 cbuf_len=i;
1381                                 cbuf_off=0;
1382 #ifdef CHARSET_EBCDIC
1383                                 ebcdic2ascii(cbuf, cbuf, i);
1384 #endif
1385                                 }
1386
1387                         write_ssl=1;
1388                         read_tty=0;
1389                         }
1390                 }
1391 shut:
1392         SSL_shutdown(con);
1393         SHUTDOWN(SSL_get_fd(con));
1394         ret=0;
1395 end:
1396         if(prexit) print_stuff(bio_c_out,con,1);
1397         if (con != NULL) SSL_free(con);
1398         if (con2 != NULL) SSL_free(con2);
1399         if (ctx != NULL) SSL_CTX_free(ctx);
1400         if (cert)
1401                 X509_free(cert);
1402         if (key)
1403                 EVP_PKEY_free(key);
1404         if (pass)
1405                 OPENSSL_free(pass);
1406         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1407         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1408         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1409         if (bio_c_out != NULL)
1410                 {
1411                 BIO_free(bio_c_out);
1412                 bio_c_out=NULL;
1413                 }
1414         apps_shutdown();
1415         OPENSSL_EXIT(ret);
1416         }
1417
1418
1419 static void print_stuff(BIO *bio, SSL *s, int full)
1420         {
1421         X509 *peer=NULL;
1422         char *p;
1423         static const char *space="                ";
1424         char buf[BUFSIZ];
1425         STACK_OF(X509) *sk;
1426         STACK_OF(X509_NAME) *sk2;
1427         SSL_CIPHER *c;
1428         X509_NAME *xn;
1429         int j,i;
1430 #ifndef OPENSSL_NO_COMP
1431         const COMP_METHOD *comp, *expansion;
1432 #endif
1433
1434         if (full)
1435                 {
1436                 int got_a_chain = 0;
1437
1438                 sk=SSL_get_peer_cert_chain(s);
1439                 if (sk != NULL)
1440                         {
1441                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1442
1443                         BIO_printf(bio,"---\nCertificate chain\n");
1444                         for (i=0; i<sk_X509_num(sk); i++)
1445                                 {
1446                                 X509_NAME_oneline(X509_get_subject_name(
1447                                         sk_X509_value(sk,i)),buf,sizeof buf);
1448                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1449                                 X509_NAME_oneline(X509_get_issuer_name(
1450                                         sk_X509_value(sk,i)),buf,sizeof buf);
1451                                 BIO_printf(bio,"   i:%s\n",buf);
1452                                 if (c_showcerts)
1453                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1454                                 }
1455                         }
1456
1457                 BIO_printf(bio,"---\n");
1458                 peer=SSL_get_peer_certificate(s);
1459                 if (peer != NULL)
1460                         {
1461                         BIO_printf(bio,"Server certificate\n");
1462                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1463                                 PEM_write_bio_X509(bio,peer);
1464                         X509_NAME_oneline(X509_get_subject_name(peer),
1465                                 buf,sizeof buf);
1466                         BIO_printf(bio,"subject=%s\n",buf);
1467                         X509_NAME_oneline(X509_get_issuer_name(peer),
1468                                 buf,sizeof buf);
1469                         BIO_printf(bio,"issuer=%s\n",buf);
1470                         }
1471                 else
1472                         BIO_printf(bio,"no peer certificate available\n");
1473
1474                 sk2=SSL_get_client_CA_list(s);
1475                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
1476                         {
1477                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
1478                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
1479                                 {
1480                                 xn=sk_X509_NAME_value(sk2,i);
1481                                 X509_NAME_oneline(xn,buf,sizeof(buf));
1482                                 BIO_write(bio,buf,strlen(buf));
1483                                 BIO_write(bio,"\n",1);
1484                                 }
1485                         }
1486                 else
1487                         {
1488                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
1489                         }
1490                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
1491                 if (p != NULL)
1492                         {
1493                         /* This works only for SSL 2.  In later protocol
1494                          * versions, the client does not know what other
1495                          * ciphers (in addition to the one to be used
1496                          * in the current connection) the server supports. */
1497
1498                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
1499                         j=i=0;
1500                         while (*p)
1501                                 {
1502                                 if (*p == ':')
1503                                         {
1504                                         BIO_write(bio,space,15-j%25);
1505                                         i++;
1506                                         j=0;
1507                                         BIO_write(bio,((i%3)?" ":"\n"),1);
1508                                         }
1509                                 else
1510                                         {
1511                                         BIO_write(bio,p,1);
1512                                         j++;
1513                                         }
1514                                 p++;
1515                                 }
1516                         BIO_write(bio,"\n",1);
1517                         }
1518
1519                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
1520                         BIO_number_read(SSL_get_rbio(s)),
1521                         BIO_number_written(SSL_get_wbio(s)));
1522                 }
1523         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
1524         c=SSL_get_current_cipher(s);
1525         BIO_printf(bio,"%s, Cipher is %s\n",
1526                 SSL_CIPHER_get_version(c),
1527                 SSL_CIPHER_get_name(c));
1528         if (peer != NULL) {
1529                 EVP_PKEY *pktmp;
1530                 pktmp = X509_get_pubkey(peer);
1531                 BIO_printf(bio,"Server public key is %d bit\n",
1532                                                          EVP_PKEY_bits(pktmp));
1533                 EVP_PKEY_free(pktmp);
1534         }
1535         BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
1536                         SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
1537 #ifndef OPENSSL_NO_COMP
1538         comp=SSL_get_current_compression(s);
1539         expansion=SSL_get_current_expansion(s);
1540         BIO_printf(bio,"Compression: %s\n",
1541                 comp ? SSL_COMP_get_name(comp) : "NONE");
1542         BIO_printf(bio,"Expansion: %s\n",
1543                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
1544 #endif
1545         SSL_SESSION_print(bio,SSL_get_session(s));
1546         BIO_printf(bio,"---\n");
1547         if (peer != NULL)
1548                 X509_free(peer);
1549         /* flush, or debugging output gets mixed with http response */
1550         (void)BIO_flush(bio);
1551         }
1552
1553 #ifndef OPENSSL_NO_TLSEXT
1554
1555 static int ocsp_resp_cb(SSL *s, void *arg)
1556         {
1557         const unsigned char *p;
1558         int len;
1559         OCSP_RESPONSE *rsp;
1560         len = SSL_get_tlsext_status_ocsp_resp(s, &p);
1561         BIO_puts(arg, "OCSP response: ");
1562         if (!p)
1563                 {
1564                 BIO_puts(arg, "no response sent\n");
1565                 return 1;
1566                 }
1567         rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
1568         if (!rsp)
1569                 {
1570                 BIO_puts(arg, "response parse error\n");
1571                 BIO_dump_indent(arg, (char *)p, len, 4);
1572                 return 0;
1573                 }
1574         BIO_puts(arg, "\n======================================\n");
1575         OCSP_RESPONSE_print(arg, rsp, 0);
1576         BIO_puts(arg, "======================================\n");
1577         OCSP_RESPONSE_free(rsp);
1578         return 1;
1579         }
1580 #endif  /* ndef OPENSSL_NO_TLSEXT */