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) 1998-2006 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  * Copyright 2005 Nokia. All rights reserved.
 113  *
 114  * The portions of the attached software ("Contribution") is developed by
 115  * Nokia Corporation and is licensed pursuant to the OpenSSL open source
 116  * license.
 117  *
 118  * The Contribution, originally written by Mika Kousa and Pasi Eronen of
 119  * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
 120  * support (see RFC 4279) to OpenSSL.
 121  *
 122  * No patent licenses or other rights except those expressly stated in
 123  * the OpenSSL open source license shall be deemed granted or received
 124  * expressly, by implication, estoppel, or otherwise.
 125  *
 126  * No assurances are provided by Nokia that the Contribution does not
 127  * infringe the patent or other intellectual property rights of any third
 128  * party or that the license provides you with all the necessary rights
 129  * to make use of the Contribution.
 130  *
 131  * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
 132  * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
 133  * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
 134  * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
 135  * OTHERWISE.
 136  */
 137
 138 #include <assert.h>
 139 #include <ctype.h>
 140 #include <stdio.h>
 141 #include <stdlib.h>
 142 #include <string.h>
 143 #include <openssl/e_os2.h>
 144 #ifdef OPENSSL_NO_STDIO
 145 #define APPS_WIN16
 146 #endif
 147
 148 /* With IPv6, it looks like Digital has mixed up the proper order of
 149    recursive header file inclusion, resulting in the compiler complaining
 150    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
 151    is needed to have fileno() declared correctly...  So let's define u_int */
 152 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
 153 #define __U_INT
 154 typedef unsigned int u_int;
 155 #endif
 156
 157 #define USE_SOCKETS
 158 #include "apps.h"
 159 #include <openssl/x509.h>
 160 #include <openssl/ssl.h>
 161 #include <openssl/err.h>
 162 #include <openssl/pem.h>
 163 #include <openssl/rand.h>
 164 #include "s_apps.h"
 165 #include "timeouts.h"
 166
 167 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
 168 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
 169 #undef FIONBIO
 170 #endif
 171
 172 #if defined(OPENSSL_SYS_BEOS_R5)
 173 #include <fcntl.h>
 174 #endif
 175
 176 #undef PROG
 177 #define PROG    s_client_main
 178
 179 /*#define SSL_HOST_NAME "www.netscape.com" */
 180 /*#define SSL_HOST_NAME "193.118.187.102" */
 181 #define SSL_HOST_NAME   "localhost"
 182
 183 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 184
 185 #undef BUFSIZZ
 186 #define BUFSIZZ 1024*8
 187
 188 extern int verify_depth;
 189 extern int verify_error;
 190 extern int verify_return_error;
 191
 192 #ifdef FIONBIO
 193 static int c_nbio=0;
 194 #endif
 195 static int c_Pause=0;
 196 static int c_debug=0;
 197 #ifndef OPENSSL_NO_TLSEXT
 198 static int c_tlsextdebug=0;
 199 #endif
 200 static int c_msg=0;
 201 static int c_showcerts=0;
 202
 203 static void sc_usage(void);
 204 static void print_stuff(BIO *berr,SSL *con,int full);
 205 static BIO *bio_c_out=NULL;
 206 static int c_quiet=0;
 207 static int c_ign_eof=0;
 208
 209 #ifndef OPENSSL_NO_PSK
 210 /* Default PSK identity and key */
 211 static char *psk_identity="Client_identity";
 212 static char *psk_key=NULL; /* by default PSK is not used */
 213
 214 static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity,
 215         unsigned int max_identity_len, unsigned char *psk,
 216         unsigned int max_psk_len)
 217         {
 218         unsigned int psk_len = 0;
 219         int ret;
 220         BIGNUM *bn=NULL;
 221
 222         if (c_debug)
 223                 BIO_printf(bio_c_out, "psk_client_cb\n");
 224         if (!hint)
 225                 {
 226                 /* no ServerKeyExchange message*/
 227                 if (c_debug)
 228                         BIO_printf(bio_c_out,"NULL received PSK identity hint, continuing anyway\n");
 229                 }
 230         else if (c_debug)
 231                 BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint);
 232
 233         /* lookup PSK identity and PSK key based on the given identity hint here */
 234         ret = BIO_snprintf(identity, max_identity_len, psk_identity);
 235         if (ret < 0 || (unsigned int)ret > max_identity_len)
 236                 goto out_err;
 237         if (c_debug)
 238                 BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity, ret);
 239         ret=BN_hex2bn(&bn, psk_key);
 240         if (!ret)
 241                 {
 242                 BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
 243                 if (bn)
 244                         BN_free(bn);
 245                 return 0;
 246                 }
 247
 248         if ((unsigned int)BN_num_bytes(bn) > max_psk_len)
 249                 {
 250                 BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
 251                         max_psk_len, BN_num_bytes(bn));
 252                 BN_free(bn);
 253                 return 0;
 254                 }
 255
 256         psk_len=BN_bn2bin(bn, psk);
 257         BN_free(bn);
 258         if (psk_len == 0)
 259                 goto out_err;
 260
 261         if (c_debug)
 262                 BIO_printf(bio_c_out, "created PSK len=%d\n", psk_len);
 263
 264         return psk_len;
 265  out_err:
 266         if (c_debug)
 267                 BIO_printf(bio_err, "Error in PSK client callback\n");
 268         return 0;
 269         }
 270 #endif
 271
 272 static void sc_usage(void)
 273         {
 274         BIO_printf(bio_err,"usage: s_client args\n");
 275         BIO_printf(bio_err,"\n");
 276         BIO_printf(bio_err," -host host     - use -connect instead\n");
 277         BIO_printf(bio_err," -port port     - use -connect instead\n");
 278         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 279
 280         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 281         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 282         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
 283         BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
 284         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 285         BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
 286         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
 287         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 288         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 289         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 290         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 291         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 292         BIO_printf(bio_err," -debug        - extra output\n");
 293 #ifdef WATT32
 294         BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
 295 #endif
 296         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 297         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 298         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 299 #ifdef FIONBIO
 300         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 301 #endif
 302         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 303         BIO_printf(bio_err," -quiet        - no s_client output\n");
 304         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 305 #ifndef OPENSSL_NO_PSK
 306         BIO_printf(bio_err," -psk_identity arg - PSK identity\n");
 307         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
 308 #endif
 309         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 310         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 311         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 312         BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");
 313         BIO_printf(bio_err," -mtu          - set the MTU\n");
 314         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 315         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 316         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 317         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 318         BIO_printf(bio_err,"                 command to see what is available\n");
 319         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
 320         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
 321         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
 322         BIO_printf(bio_err,"                 only \"smtp\", \"pop3\", \"imap\", and \"ftp\" are supported.\n");
 323 #ifndef OPENSSL_NO_ENGINE
 324         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 325 #endif
 326         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 327 #ifndef OPENSSL_NO_TLSEXT
 328         BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
 329 #endif
 330         }
 331
 332 #ifndef OPENSSL_NO_TLSEXT
 333
 334 /* This is a context that we pass to callbacks */
 335 typedef struct tlsextctx_st {
 336    BIO * biodebug;
 337    int ack;
 338 } tlsextctx;
 339
 340
 341 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
 342         {
 343         tlsextctx * p = (tlsextctx *) arg;
 344         const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
 345         if (SSL_get_servername_type(s) != -1)
 346                 p->ack = !SSL_session_reused(s) && hn != NULL;
 347         else
 348                 BIO_printf(bio_err,"Can't use SSL_get_servername\n");
 349
 350         return SSL_TLSEXT_ERR_OK;
 351         }
 352 #endif
 353
 354 enum
 355 {
 356         PROTO_OFF       = 0,
 357         PROTO_SMTP,
 358         PROTO_POP3,
 359         PROTO_IMAP,
 360         PROTO_FTP
 361 };
 362
 363 int MAIN(int, char **);
 364
 365 int MAIN(int argc, char **argv)
 366         {
 367         int off=0;
 368         SSL *con=NULL;
 369         X509_STORE *store = NULL;
 370         int s,k,width,state=0;
 371         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
 372         int cbuf_len,cbuf_off;
 373         int sbuf_len,sbuf_off;
 374         fd_set readfds,writefds;
 375         short port=PORT;
 376         int full_log=1;
 377         char *host=SSL_HOST_NAME;
 378         char *cert_file=NULL,*key_file=NULL;
 379         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
 380         char *passarg = NULL, *pass = NULL;
 381         X509 *cert = NULL;
 382         EVP_PKEY *key = NULL;
 383         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 384         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 385         int crlf=0;
 386         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 387         SSL_CTX *ctx=NULL;
 388         int ret=1,in_init=1,i,nbio_test=0;
 389         int starttls_proto = PROTO_OFF;
 390         int prexit = 0, vflags = 0;
 391         const SSL_METHOD *meth=NULL;
 392         int socket_type=SOCK_STREAM;
 393         BIO *sbio;
 394         char *inrand=NULL;
 395         int mbuf_len=0;
 396 #ifndef OPENSSL_NO_ENGINE
 397         char *engine_id=NULL;
 398         ENGINE *e=NULL;
 399 #endif
 400 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
 401         struct timeval tv;
 402 #if defined(OPENSSL_SYS_BEOS_R5)
 403         int stdin_set = 0;
 404 #endif
 405 #endif
 406
 407 #ifndef OPENSSL_NO_TLSEXT
 408         char *servername = NULL;
 409         tlsextctx tlsextcbp =
 410         {NULL,0};
 411 #endif
 412         char *sess_in = NULL;
 413         char *sess_out = NULL;
 414         struct sockaddr peer;
 415         int peerlen = sizeof(peer);
 416         int enable_timeouts = 0 ;
 417         long socket_mtu = 0;
 418
 419 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 420         meth=SSLv23_client_method();
 421 #elif !defined(OPENSSL_NO_SSL3)
 422         meth=SSLv3_client_method();
 423 #elif !defined(OPENSSL_NO_SSL2)
 424         meth=SSLv2_client_method();
 425 #endif
 426
 427         apps_startup();
 428         c_Pause=0;
 429         c_quiet=0;
 430         c_ign_eof=0;
 431         c_debug=0;
 432         c_msg=0;
 433         c_showcerts=0;
 434
 435         if (bio_err == NULL)
 436                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 437
 438         if (!load_config(bio_err, NULL))
 439                 goto end;
 440
 441         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 442                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 443                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 444                 {
 445                 BIO_printf(bio_err,"out of memory\n");
 446                 goto end;
 447                 }
 448
 449         verify_depth=0;
 450         verify_error=X509_V_OK;
 451 #ifdef FIONBIO
 452         c_nbio=0;
 453 #endif
 454
 455         argc--;
 456         argv++;
 457         while (argc >= 1)
 458                 {
 459                 if      (strcmp(*argv,"-host") == 0)
 460                         {
 461                         if (--argc < 1) goto bad;
 462                         host= *(++argv);
 463                         }
 464                 else if (strcmp(*argv,"-port") == 0)
 465                         {
 466                         if (--argc < 1) goto bad;
 467                         port=atoi(*(++argv));
 468                         if (port == 0) goto bad;
 469                         }
 470                 else if (strcmp(*argv,"-connect") == 0)
 471                         {
 472                         if (--argc < 1) goto bad;
 473                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 474                                 goto bad;
 475                         }
 476                 else if (strcmp(*argv,"-verify") == 0)
 477                         {
 478                         verify=SSL_VERIFY_PEER;
 479                         if (--argc < 1) goto bad;
 480                         verify_depth=atoi(*(++argv));
 481                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 482                         }
 483                 else if (strcmp(*argv,"-cert") == 0)
 484                         {
 485                         if (--argc < 1) goto bad;
 486                         cert_file= *(++argv);
 487                         }
 488                 else if (strcmp(*argv,"-sess_out") == 0)
 489                         {
 490                         if (--argc < 1) goto bad;
 491                         sess_out = *(++argv);
 492                         }
 493                 else if (strcmp(*argv,"-sess_in") == 0)
 494                         {
 495                         if (--argc < 1) goto bad;
 496                         sess_in = *(++argv);
 497                         }
 498                 else if (strcmp(*argv,"-certform") == 0)
 499                         {
 500                         if (--argc < 1) goto bad;
 501                         cert_format = str2fmt(*(++argv));
 502                         }
 503                 else if (strcmp(*argv,"-crl_check") == 0)
 504                         vflags |= X509_V_FLAG_CRL_CHECK;
 505                 else if (strcmp(*argv,"-crl_check_all") == 0)
 506                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
 507                 else if (strcmp(*argv,"-verify_return_error") == 0)
 508                         verify_return_error = 1;
 509                 else if (strcmp(*argv,"-prexit") == 0)
 510                         prexit=1;
 511                 else if (strcmp(*argv,"-crlf") == 0)
 512                         crlf=1;
 513                 else if (strcmp(*argv,"-quiet") == 0)
 514                         {
 515                         c_quiet=1;
 516                         c_ign_eof=1;
 517                         }
 518                 else if (strcmp(*argv,"-ign_eof") == 0)
 519                         c_ign_eof=1;
 520                 else if (strcmp(*argv,"-pause") == 0)
 521                         c_Pause=1;
 522                 else if (strcmp(*argv,"-debug") == 0)
 523                         c_debug=1;
 524 #ifndef OPENSSL_NO_TLSEXT
 525                 else if (strcmp(*argv,"-tlsextdebug") == 0)
 526                         c_tlsextdebug=1;
 527 #endif
 528 #ifdef WATT32
 529                 else if (strcmp(*argv,"-wdebug") == 0)
 530                         dbug_init();
 531 #endif
 532                 else if (strcmp(*argv,"-msg") == 0)
 533                         c_msg=1;
 534                 else if (strcmp(*argv,"-showcerts") == 0)
 535                         c_showcerts=1;
 536                 else if (strcmp(*argv,"-nbio_test") == 0)
 537                         nbio_test=1;
 538                 else if (strcmp(*argv,"-state") == 0)
 539                         state=1;
 540 #ifndef OPENSSL_NO_PSK
 541                 else if (strcmp(*argv,"-psk_identity") == 0)
 542                         {
 543                         if (--argc < 1) goto bad;
 544                         psk_identity=*(++argv);
 545                         }
 546                 else if (strcmp(*argv,"-psk") == 0)
 547                         {
 548                         size_t j;
 549
 550                         if (--argc < 1) goto bad;
 551                         psk_key=*(++argv);
 552                         for (j = 0; j < strlen(psk_key); j++)
 553                                 {
 554                                 if (isxdigit((int)psk_key[j]))
 555                                         continue;
 556                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
 557                                 goto bad;
 558                                 }
 559                         }
 560 #endif
 561 #ifndef OPENSSL_NO_SSL2
 562                 else if (strcmp(*argv,"-ssl2") == 0)
 563                         meth=SSLv2_client_method();
 564 #endif
 565 #ifndef OPENSSL_NO_SSL3
 566                 else if (strcmp(*argv,"-ssl3") == 0)
 567                         meth=SSLv3_client_method();
 568 #endif
 569 #ifndef OPENSSL_NO_TLS1
 570                 else if (strcmp(*argv,"-tls1") == 0)
 571                         meth=TLSv1_client_method();
 572 #endif
 573 #ifndef OPENSSL_NO_DTLS1
 574                 else if (strcmp(*argv,"-dtls1") == 0)
 575                         {
 576                         meth=DTLSv1_client_method();
 577                         socket_type=SOCK_DGRAM;
 578                         }
 579                 else if (strcmp(*argv,"-timeout") == 0)
 580                         enable_timeouts=1;
 581                 else if (strcmp(*argv,"-mtu") == 0)
 582                         {
 583                         if (--argc < 1) goto bad;
 584                         socket_mtu = atol(*(++argv));
 585                         }
 586 #endif
 587                 else if (strcmp(*argv,"-bugs") == 0)
 588                         bugs=1;
 589                 else if (strcmp(*argv,"-keyform") == 0)
 590                         {
 591                         if (--argc < 1) goto bad;
 592                         key_format = str2fmt(*(++argv));
 593                         }
 594                 else if (strcmp(*argv,"-pass") == 0)
 595                         {
 596                         if (--argc < 1) goto bad;
 597                         passarg = *(++argv);
 598                         }
 599                 else if (strcmp(*argv,"-key") == 0)
 600                         {
 601                         if (--argc < 1) goto bad;
 602                         key_file= *(++argv);
 603                         }
 604                 else if (strcmp(*argv,"-reconnect") == 0)
 605                         {
 606                         reconnect=5;
 607                         }
 608                 else if (strcmp(*argv,"-CApath") == 0)
 609                         {
 610                         if (--argc < 1) goto bad;
 611                         CApath= *(++argv);
 612                         }
 613                 else if (strcmp(*argv,"-CAfile") == 0)
 614                         {
 615                         if (--argc < 1) goto bad;
 616                         CAfile= *(++argv);
 617                         }
 618                 else if (strcmp(*argv,"-no_tls1") == 0)
 619                         off|=SSL_OP_NO_TLSv1;
 620                 else if (strcmp(*argv,"-no_ssl3") == 0)
 621                         off|=SSL_OP_NO_SSLv3;
 622                 else if (strcmp(*argv,"-no_ssl2") == 0)
 623                         off|=SSL_OP_NO_SSLv2;
 624                 else if (strcmp(*argv,"-no_comp") == 0)
 625                         { off|=SSL_OP_NO_COMPRESSION; }
 626 #ifndef OPENSSL_NO_TLSEXT
 627                 else if (strcmp(*argv,"-no_ticket") == 0)
 628                         { off|=SSL_OP_NO_TICKET; }
 629 #endif
 630                 else if (strcmp(*argv,"-serverpref") == 0)
 631                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 632                 else if (strcmp(*argv,"-cipher") == 0)
 633                         {
 634                         if (--argc < 1) goto bad;
 635                         cipher= *(++argv);
 636                         }
 637 #ifdef FIONBIO
 638                 else if (strcmp(*argv,"-nbio") == 0)
 639                         { c_nbio=1; }
 640 #endif
 641                 else if (strcmp(*argv,"-starttls") == 0)
 642                         {
 643                         if (--argc < 1) goto bad;
 644                         ++argv;
 645                         if (strcmp(*argv,"smtp") == 0)
 646                                 starttls_proto = PROTO_SMTP;
 647                         else if (strcmp(*argv,"pop3") == 0)
 648                                 starttls_proto = PROTO_POP3;
 649                         else if (strcmp(*argv,"imap") == 0)
 650                                 starttls_proto = PROTO_IMAP;
 651                         else if (strcmp(*argv,"ftp") == 0)
 652                                 starttls_proto = PROTO_FTP;
 653                         else
 654                                 goto bad;
 655                         }
 656 #ifndef OPENSSL_NO_ENGINE
 657                 else if (strcmp(*argv,"-engine") == 0)
 658                         {
 659                         if (--argc < 1) goto bad;
 660                         engine_id = *(++argv);
 661                         }
 662 #endif
 663                 else if (strcmp(*argv,"-rand") == 0)
 664                         {
 665                         if (--argc < 1) goto bad;
 666                         inrand= *(++argv);
 667                         }
 668 #ifndef OPENSSL_NO_TLSEXT
 669                 else if (strcmp(*argv,"-servername") == 0)
 670                         {
 671                         if (--argc < 1) goto bad;
 672                         servername= *(++argv);
 673                         /* meth=TLSv1_client_method(); */
 674                         }
 675 #endif
 676                 else
 677                         {
 678                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 679                         badop=1;
 680                         break;
 681                         }
 682                 argc--;
 683                 argv++;
 684                 }
 685         if (badop)
 686                 {
 687 bad:
 688                 sc_usage();
 689                 goto end;
 690                 }
 691
 692         OpenSSL_add_ssl_algorithms();
 693         SSL_load_error_strings();
 694
 695 #ifndef OPENSSL_NO_ENGINE
 696         e = setup_engine(bio_err, engine_id, 1);
 697 #endif
 698         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
 699                 {
 700                 BIO_printf(bio_err, "Error getting password\n");
 701                 goto end;
 702                 }
 703
 704         if (key_file == NULL)
 705                 key_file = cert_file;
 706
 707
 708         if (key_file)
 709
 710                 {
 711
 712                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
 713                                "client certificate private key file");
 714                 if (!key)
 715                         {
 716                         ERR_print_errors(bio_err);
 717                         goto end;
 718                         }
 719
 720                 }
 721
 722         if (cert_file)
 723
 724                 {
 725                 cert = load_cert(bio_err,cert_file,cert_format,
 726                                 NULL, e, "client certificate file");
 727
 728                 if (!cert)
 729                         {
 730                         ERR_print_errors(bio_err);
 731                         goto end;
 732                         }
 733                 }
 734
 735         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
 736                 && !RAND_status())
 737                 {
 738                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 739                 }
 740         if (inrand != NULL)
 741                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 742                         app_RAND_load_files(inrand));
 743
 744         if (bio_c_out == NULL)
 745                 {
 746                 if (c_quiet && !c_debug && !c_msg)
 747                         {
 748                         bio_c_out=BIO_new(BIO_s_null());
 749                         }
 750                 else
 751                         {
 752                         if (bio_c_out == NULL)
 753                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 754                         }
 755                 }
 756
 757         ctx=SSL_CTX_new(meth);
 758         if (ctx == NULL)
 759                 {
 760                 ERR_print_errors(bio_err);
 761                 goto end;
 762                 }
 763
 764 #ifndef OPENSSL_NO_PSK
 765         if (psk_key != NULL)
 766                 {
 767                 if (c_debug)
 768                         BIO_printf(bio_c_out, "PSK key given, setting client callback\n");
 769                 SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
 770                 }
 771 #endif
 772         if (bugs)
 773                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 774         else
 775                 SSL_CTX_set_options(ctx,off);
 776         /* DTLS: partial reads end up discarding unread UDP bytes :-(
 777          * Setting read ahead solves this problem.
 778          */
 779         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
 780
 781         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 782         if (cipher != NULL)
 783                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
 784                 BIO_printf(bio_err,"error setting cipher list\n");
 785                 ERR_print_errors(bio_err);
 786                 goto end;
 787         }
 788 #if 0
 789         else
 790                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 791 #endif
 792
 793         SSL_CTX_set_verify(ctx,verify,verify_callback);
 794         if (!set_cert_key_stuff(ctx,cert,key))
 795                 goto end;
 796
 797         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 798                 (!SSL_CTX_set_default_verify_paths(ctx)))
 799                 {
 800                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
 801                 ERR_print_errors(bio_err);
 802                 /* goto end; */
 803                 }
 804
 805         store = SSL_CTX_get_cert_store(ctx);
 806         X509_STORE_set_flags(store, vflags);
 807 #ifndef OPENSSL_NO_TLSEXT
 808         if (servername != NULL)
 809                 {
 810                 tlsextcbp.biodebug = bio_err;
 811                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
 812                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
 813                 }
 814 #endif
 815
 816         con=SSL_new(ctx);
 817         if (sess_in)
 818                 {
 819                 SSL_SESSION *sess;
 820                 BIO *stmp = BIO_new_file(sess_in, "r");
 821                 if (!stmp)
 822                         {
 823                         BIO_printf(bio_err, "Can't open session file %s\n",
 824                                                 sess_in);
 825                         ERR_print_errors(bio_err);
 826                         goto end;
 827                         }
 828                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
 829                 BIO_free(stmp);
 830                 if (!sess)
 831                         {
 832                         BIO_printf(bio_err, "Can't open session file %s\n",
 833                                                 sess_in);
 834                         ERR_print_errors(bio_err);
 835                         goto end;
 836                         }
 837                 SSL_set_session(con, sess);
 838                 SSL_SESSION_free(sess);
 839                 }
 840 #ifndef OPENSSL_NO_TLSEXT
 841         if (servername != NULL)
 842                 {
 843                 if (!SSL_set_tlsext_host_name(con,servername))
 844                         {
 845                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
 846                         ERR_print_errors(bio_err);
 847                         goto end;
 848                         }
 849                 }
 850 #endif
 851 #ifndef OPENSSL_NO_KRB5
 852         if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
 853                 {
 854                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
 855                 }
 856 #endif  /* OPENSSL_NO_KRB5  */
 857 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 858
 859 re_start:
 860
 861         if (init_client(&s,host,port,socket_type) == 0)
 862                 {
 863                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 864                 SHUTDOWN(s);
 865                 goto end;
 866                 }
 867         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 868
 869 #ifdef FIONBIO
 870         if (c_nbio)
 871                 {
 872                 unsigned long l=1;
 873                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 874                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 875                         {
 876                         ERR_print_errors(bio_err);
 877                         goto end;
 878                         }
 879                 }
 880 #endif
 881         if (c_Pause & 0x01) con->debug=1;
 882
 883         if ( SSL_version(con) == DTLS1_VERSION)
 884                 {
 885                 struct timeval timeout;
 886
 887                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
 888                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
 889                         {
 890                         BIO_printf(bio_err, "getsockname:errno=%d\n",
 891                                 get_last_socket_error());
 892                         SHUTDOWN(s);
 893                         goto end;
 894                         }
 895
 896                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
 897
 898                 if (enable_timeouts)
 899                         {
 900                         timeout.tv_sec = 0;
 901                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
 902                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
 903
 904                         timeout.tv_sec = 0;
 905                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
 906                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
 907                         }
 908
 909                 if (socket_mtu > 0)
 910                         {
 911                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
 912                         SSL_set_mtu(con, socket_mtu);
 913                         }
 914                 else
 915                         /* want to do MTU discovery */
 916                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
 917                 }
 918         else
 919                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
 920
 921
 922
 923         if (nbio_test)
 924                 {
 925                 BIO *test;
 926
 927                 test=BIO_new(BIO_f_nbio_test());
 928                 sbio=BIO_push(test,sbio);
 929                 }
 930
 931         if (c_debug)
 932                 {
 933                 con->debug=1;
 934                 BIO_set_callback(sbio,bio_dump_callback);
 935                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
 936                 }
 937         if (c_msg)
 938                 {
 939                 SSL_set_msg_callback(con, msg_cb);
 940                 SSL_set_msg_callback_arg(con, bio_c_out);
 941                 }
 942 #ifndef OPENSSL_NO_TLSEXT
 943         if (c_tlsextdebug)
 944                 {
 945                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
 946                 SSL_set_tlsext_debug_arg(con, bio_c_out);
 947                 }
 948 #endif
 949
 950         SSL_set_bio(con,sbio,sbio);
 951         SSL_set_connect_state(con);
 952
 953         /* ok, lets connect */
 954         width=SSL_get_fd(con)+1;
 955
 956         read_tty=1;
 957         write_tty=0;
 958         tty_on=0;
 959         read_ssl=1;
 960         write_ssl=1;
 961
 962         cbuf_len=0;
 963         cbuf_off=0;
 964         sbuf_len=0;
 965         sbuf_off=0;
 966
 967         /* This is an ugly hack that does a lot of assumptions */
 968         /* We do have to handle multi-line responses which may come
 969            in a single packet or not. We therefore have to use
 970            BIO_gets() which does need a buffering BIO. So during
 971            the initial chitchat we do push a buffering BIO into the
 972            chain that is removed again later on to not disturb the
 973            rest of the s_client operation. */
 974         if (starttls_proto == PROTO_SMTP)
 975                 {
 976                 int foundit=0;
 977                 BIO *fbio = BIO_new(BIO_f_buffer());
 978                 BIO_push(fbio, sbio);
 979                 /* wait for multi-line response to end from SMTP */
 980                 do
 981                         {
 982                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
 983                         }
 984                 while (mbuf_len>3 && mbuf[3]=='-');
 985                 /* STARTTLS command requires EHLO... */
 986                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
 987                 (void)BIO_flush(fbio);
 988                 /* wait for multi-line response to end EHLO SMTP response */
 989                 do
 990                         {
 991                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
 992                         if (strstr(mbuf,"STARTTLS"))
 993                                 foundit=1;
 994                         }
 995                 while (mbuf_len>3 && mbuf[3]=='-');
 996                 (void)BIO_flush(fbio);
 997                 BIO_pop(fbio);
 998                 BIO_free(fbio);
 999                 if (!foundit)
1000                         BIO_printf(bio_err,
1001                                    "didn't found starttls in server response,"
1002                                    " try anyway...\n");
1003                 BIO_printf(sbio,"STARTTLS\r\n");
1004                 BIO_read(sbio,sbuf,BUFSIZZ);
1005                 }
1006         else if (starttls_proto == PROTO_POP3)
1007                 {
1008                 BIO_read(sbio,mbuf,BUFSIZZ);
1009                 BIO_printf(sbio,"STLS\r\n");
1010                 BIO_read(sbio,sbuf,BUFSIZZ);
1011                 }
1012         else if (starttls_proto == PROTO_IMAP)
1013                 {
1014                 int foundit=0;
1015                 BIO *fbio = BIO_new(BIO_f_buffer());
1016                 BIO_push(fbio, sbio);
1017                 BIO_gets(fbio,mbuf,BUFSIZZ);
1018                 /* STARTTLS command requires CAPABILITY... */
1019                 BIO_printf(fbio,". CAPABILITY\r\n");
1020                 (void)BIO_flush(fbio);
1021                 /* wait for multi-line CAPABILITY response */
1022                 do
1023                         {
1024                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1025                         if (strstr(mbuf,"STARTTLS"))
1026                                 foundit=1;
1027                         }
1028                 while (mbuf_len>3 && mbuf[0]!='.');
1029                 (void)BIO_flush(fbio);
1030                 BIO_pop(fbio);
1031                 BIO_free(fbio);
1032                 if (!foundit)
1033                         BIO_printf(bio_err,
1034                                    "didn't found STARTTLS in server response,"
1035                                    " try anyway...\n");
1036                 BIO_printf(sbio,". STARTTLS\r\n");
1037                 BIO_read(sbio,sbuf,BUFSIZZ);
1038                 }
1039         else if (starttls_proto == PROTO_FTP)
1040                 {
1041                 BIO *fbio = BIO_new(BIO_f_buffer());
1042                 BIO_push(fbio, sbio);
1043                 /* wait for multi-line response to end from FTP */
1044                 do
1045                         {
1046                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1047                         }
1048                 while (mbuf_len>3 && mbuf[3]=='-');
1049                 (void)BIO_flush(fbio);
1050                 BIO_pop(fbio);
1051                 BIO_free(fbio);
1052                 BIO_printf(sbio,"AUTH TLS\r\n");
1053                 BIO_read(sbio,sbuf,BUFSIZZ);
1054                 }
1055
1056         for (;;)
1057                 {
1058                 FD_ZERO(&readfds);
1059                 FD_ZERO(&writefds);
1060
1061                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1062                         {
1063                         in_init=1;
1064                         tty_on=0;
1065                         }
1066                 else
1067                         {
1068                         tty_on=1;
1069                         if (in_init)
1070                                 {
1071                                 in_init=0;
1072 #ifndef OPENSSL_NO_TLSEXT
1073                                 if (servername != NULL && !SSL_session_reused(con))
1074                                         {
1075                                         BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
1076                                         }
1077 #endif
1078                                 if (sess_out)
1079                                         {
1080                                         BIO *stmp = BIO_new_file(sess_out, "w");
1081                                         if (stmp)
1082                                                 {
1083                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1084                                                 BIO_free(stmp);
1085                                                 }
1086                                         else
1087                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1088                                         }
1089                                 print_stuff(bio_c_out,con,full_log);
1090                                 if (full_log > 0) full_log--;
1091
1092                                 if (starttls_proto)
1093                                         {
1094                                         BIO_printf(bio_err,"%s",mbuf);
1095                                         /* We don't need to know any more */
1096                                         starttls_proto = PROTO_OFF;
1097                                         }
1098
1099                                 if (reconnect)
1100                                         {
1101                                         reconnect--;
1102                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1103                                         SSL_shutdown(con);
1104                                         SSL_set_connect_state(con);
1105                                         SHUTDOWN(SSL_get_fd(con));
1106                                         goto re_start;
1107                                         }
1108                                 }
1109                         }
1110
1111                 ssl_pending = read_ssl && SSL_pending(con);
1112
1113                 if (!ssl_pending)
1114                         {
1115 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
1116                         if (tty_on)
1117                                 {
1118                                 if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
1119                                 if (write_tty) openssl_fdset(fileno(stdout),&writefds);
1120                                 }
1121                         if (read_ssl)
1122                                 openssl_fdset(SSL_get_fd(con),&readfds);
1123                         if (write_ssl)
1124                                 openssl_fdset(SSL_get_fd(con),&writefds);
1125 #else
1126                         if(!tty_on || !write_tty) {
1127                                 if (read_ssl)
1128                                         openssl_fdset(SSL_get_fd(con),&readfds);
1129                                 if (write_ssl)
1130                                         openssl_fdset(SSL_get_fd(con),&writefds);
1131                         }
1132 #endif
1133 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1134                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1135
1136                         /* Note: under VMS with SOCKETSHR the second parameter
1137                          * is currently of type (int *) whereas under other
1138                          * systems it is (void *) if you don't have a cast it
1139                          * will choke the compiler: if you do have a cast then
1140                          * you can either go for (int *) or (void *).
1141                          */
1142 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1143                         /* Under Windows/DOS we make the assumption that we can
1144                          * always write to the tty: therefore if we need to
1145                          * write to the tty we just fall through. Otherwise
1146                          * we timeout the select every second and see if there
1147                          * are any keypresses. Note: this is a hack, in a proper
1148                          * Windows application we wouldn't do this.
1149                          */
1150                         i=0;
1151                         if(!write_tty) {
1152                                 if(read_tty) {
1153                                         tv.tv_sec = 1;
1154                                         tv.tv_usec = 0;
1155                                         i=select(width,(void *)&readfds,(void *)&writefds,
1156                                                  NULL,&tv);
1157 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1158                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1159 #else
1160                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1161 #endif
1162                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1163                                          NULL,NULL);
1164                         }
1165 #elif defined(OPENSSL_SYS_NETWARE)
1166                         if(!write_tty) {
1167                                 if(read_tty) {
1168                                         tv.tv_sec = 1;
1169                                         tv.tv_usec = 0;
1170                                         i=select(width,(void *)&readfds,(void *)&writefds,
1171                                                 NULL,&tv);
1172                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1173                                         NULL,NULL);
1174                         }
1175 #elif defined(OPENSSL_SYS_BEOS_R5)
1176                         /* Under BeOS-R5 the situation is similar to DOS */
1177                         i=0;
1178                         stdin_set = 0;
1179                         (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
1180                         if(!write_tty) {
1181                                 if(read_tty) {
1182                                         tv.tv_sec = 1;
1183                                         tv.tv_usec = 0;
1184                                         i=select(width,(void *)&readfds,(void *)&writefds,
1185                                                  NULL,&tv);
1186                                         if (read(fileno(stdin), sbuf, 0) >= 0)
1187                                                 stdin_set = 1;
1188                                         if (!i && (stdin_set != 1 || !read_tty))
1189                                                 continue;
1190                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1191                                          NULL,NULL);
1192                         }
1193                         (void)fcntl(fileno(stdin), F_SETFL, 0);
1194 #else
1195                         i=select(width,(void *)&readfds,(void *)&writefds,
1196                                  NULL,NULL);
1197 #endif
1198                         if ( i < 0)
1199                                 {
1200                                 BIO_printf(bio_err,"bad select %d\n",
1201                                 get_last_socket_error());
1202                                 goto shut;
1203                                 /* goto end; */
1204                                 }
1205                         }
1206
1207                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1208                         {
1209                         k=SSL_write(con,&(cbuf[cbuf_off]),
1210                                 (unsigned int)cbuf_len);
1211                         switch (SSL_get_error(con,k))
1212                                 {
1213                         case SSL_ERROR_NONE:
1214                                 cbuf_off+=k;
1215                                 cbuf_len-=k;
1216                                 if (k <= 0) goto end;
1217                                 /* we have done a  write(con,NULL,0); */
1218                                 if (cbuf_len <= 0)
1219                                         {
1220                                         read_tty=1;
1221                                         write_ssl=0;
1222                                         }
1223                                 else /* if (cbuf_len > 0) */
1224                                         {
1225                                         read_tty=0;
1226                                         write_ssl=1;
1227                                         }
1228                                 break;
1229                         case SSL_ERROR_WANT_WRITE:
1230                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1231                                 write_ssl=1;
1232                                 read_tty=0;
1233                                 break;
1234                         case SSL_ERROR_WANT_READ:
1235                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1236                                 write_tty=0;
1237                                 read_ssl=1;
1238                                 write_ssl=0;
1239                                 break;
1240                         case SSL_ERROR_WANT_X509_LOOKUP:
1241                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1242                                 break;
1243                         case SSL_ERROR_ZERO_RETURN:
1244                                 if (cbuf_len != 0)
1245                                         {
1246                                         BIO_printf(bio_c_out,"shutdown\n");
1247                                         goto shut;
1248                                         }
1249                                 else
1250                                         {
1251                                         read_tty=1;
1252                                         write_ssl=0;
1253                                         break;
1254                                         }
1255
1256                         case SSL_ERROR_SYSCALL:
1257                                 if ((k != 0) || (cbuf_len != 0))
1258                                         {
1259                                         BIO_printf(bio_err,"write:errno=%d\n",
1260                                                 get_last_socket_error());
1261                                         goto shut;
1262                                         }
1263                                 else
1264                                         {
1265                                         read_tty=1;
1266                                         write_ssl=0;
1267                                         }
1268                                 break;
1269                         case SSL_ERROR_SSL:
1270                                 ERR_print_errors(bio_err);
1271                                 goto shut;
1272                                 }
1273                         }
1274 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
1275                 /* Assume Windows/DOS/BeOS can always write */
1276                 else if (!ssl_pending && write_tty)
1277 #else
1278                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1279 #endif
1280                         {
1281 #ifdef CHARSET_EBCDIC
1282                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1283 #endif
1284                         i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
1285
1286                         if (i <= 0)
1287                                 {
1288                                 BIO_printf(bio_c_out,"DONE\n");
1289                                 goto shut;
1290                                 /* goto end; */
1291                                 }
1292
1293                         sbuf_len-=i;;
1294                         sbuf_off+=i;
1295                         if (sbuf_len <= 0)
1296                                 {
1297                                 read_ssl=1;
1298                                 write_tty=0;
1299                                 }
1300                         }
1301                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1302                         {
1303 #ifdef RENEG
1304 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1305 #endif
1306 #if 1
1307                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1308 #else
1309 /* Demo for pending and peek :-) */
1310                         k=SSL_read(con,sbuf,16);
1311 { char zbuf[10240];
1312 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1313 }
1314 #endif
1315
1316                         switch (SSL_get_error(con,k))
1317                                 {
1318                         case SSL_ERROR_NONE:
1319                                 if (k <= 0)
1320                                         goto end;
1321                                 sbuf_off=0;
1322                                 sbuf_len=k;
1323
1324                                 read_ssl=0;
1325                                 write_tty=1;
1326                                 break;
1327                         case SSL_ERROR_WANT_WRITE:
1328                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1329                                 write_ssl=1;
1330                                 read_tty=0;
1331                                 break;
1332                         case SSL_ERROR_WANT_READ:
1333                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1334                                 write_tty=0;
1335                                 read_ssl=1;
1336                                 if ((read_tty == 0) && (write_ssl == 0))
1337                                         write_ssl=1;
1338                                 break;
1339                         case SSL_ERROR_WANT_X509_LOOKUP:
1340                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1341                                 break;
1342                         case SSL_ERROR_SYSCALL:
1343                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
1344                                 goto shut;
1345                         case SSL_ERROR_ZERO_RETURN:
1346                                 BIO_printf(bio_c_out,"closed\n");
1347                                 goto shut;
1348                         case SSL_ERROR_SSL:
1349                                 ERR_print_errors(bio_err);
1350                                 goto shut;
1351                                 /* break; */
1352                                 }
1353                         }
1354
1355 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1356 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1357                 else if (_kbhit())
1358 #else
1359                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1360 #endif
1361 #elif defined (OPENSSL_SYS_NETWARE)
1362                 else if (_kbhit())
1363 #elif defined(OPENSSL_SYS_BEOS_R5)
1364                 else if (stdin_set)
1365 #else
1366                 else if (FD_ISSET(fileno(stdin),&readfds))
1367 #endif
1368                         {
1369                         if (crlf)
1370                                 {
1371                                 int j, lf_num;
1372
1373                                 i=raw_read_stdin(cbuf,BUFSIZZ/2);
1374                                 lf_num = 0;
1375                                 /* both loops are skipped when i <= 0 */
1376                                 for (j = 0; j < i; j++)
1377                                         if (cbuf[j] == '\n')
1378                                                 lf_num++;
1379                                 for (j = i-1; j >= 0; j--)
1380                                         {
1381                                         cbuf[j+lf_num] = cbuf[j];
1382                                         if (cbuf[j] == '\n')
1383                                                 {
1384                                                 lf_num--;
1385                                                 i++;
1386                                                 cbuf[j+lf_num] = '\r';
1387                                                 }
1388                                         }
1389                                 assert(lf_num == 0);
1390                                 }
1391                         else
1392                                 i=raw_read_stdin(cbuf,BUFSIZZ);
1393
1394                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1395                                 {
1396                                 BIO_printf(bio_err,"DONE\n");
1397                                 goto shut;
1398                                 }
1399
1400                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1401                                 {
1402                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1403                                 SSL_renegotiate(con);
1404                                 cbuf_len=0;
1405                                 }
1406                         else
1407                                 {
1408                                 cbuf_len=i;
1409                                 cbuf_off=0;
1410 #ifdef CHARSET_EBCDIC
1411                                 ebcdic2ascii(cbuf, cbuf, i);
1412 #endif
1413                                 }
1414
1415                         write_ssl=1;
1416                         read_tty=0;
1417                         }
1418                 }
1419 shut:
1420         if (in_init)
1421                 print_stuff(bio_c_out,con,full_log);
1422         SSL_shutdown(con);
1423         SHUTDOWN(SSL_get_fd(con));
1424         ret=0;
1425 end:
1426         if (con != NULL)
1427                 {
1428                 if (prexit != 0)
1429                         print_stuff(bio_c_out,con,1);
1430                 SSL_free(con);
1431                 }
1432         if (ctx != NULL) SSL_CTX_free(ctx);
1433         if (cert)
1434                 X509_free(cert);
1435         if (key)
1436                 EVP_PKEY_free(key);
1437         if (pass)
1438                 OPENSSL_free(pass);
1439         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1440         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1441         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1442         if (bio_c_out != NULL)
1443                 {
1444                 BIO_free(bio_c_out);
1445                 bio_c_out=NULL;
1446                 }
1447         apps_shutdown();
1448         OPENSSL_EXIT(ret);
1449         }
1450
1451
1452 static void print_stuff(BIO *bio, SSL *s, int full)
1453         {
1454         X509 *peer=NULL;
1455         char *p;
1456         static const char *space="                ";
1457         char buf[BUFSIZ];
1458         STACK_OF(X509) *sk;
1459         STACK_OF(X509_NAME) *sk2;
1460         SSL_CIPHER *c;
1461         X509_NAME *xn;
1462         int j,i;
1463 #ifndef OPENSSL_NO_COMP
1464         const COMP_METHOD *comp, *expansion;
1465 #endif
1466
1467         if (full)
1468                 {
1469                 int got_a_chain = 0;
1470
1471                 sk=SSL_get_peer_cert_chain(s);
1472                 if (sk != NULL)
1473                         {
1474                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1475
1476                         BIO_printf(bio,"---\nCertificate chain\n");
1477                         for (i=0; i<sk_X509_num(sk); i++)
1478                                 {
1479                                 X509_NAME_oneline(X509_get_subject_name(
1480                                         sk_X509_value(sk,i)),buf,sizeof buf);
1481                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1482                                 X509_NAME_oneline(X509_get_issuer_name(
1483                                         sk_X509_value(sk,i)),buf,sizeof buf);
1484                                 BIO_printf(bio,"   i:%s\n",buf);
1485                                 if (c_showcerts)
1486                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1487                                 }
1488                         }
1489
1490                 BIO_printf(bio,"---\n");
1491                 peer=SSL_get_peer_certificate(s);
1492                 if (peer != NULL)
1493                         {
1494                         BIO_printf(bio,"Server certificate\n");
1495                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1496                                 PEM_write_bio_X509(bio,peer);
1497                         X509_NAME_oneline(X509_get_subject_name(peer),
1498                                 buf,sizeof buf);
1499                         BIO_printf(bio,"subject=%s\n",buf);
1500                         X509_NAME_oneline(X509_get_issuer_name(peer),
1501                                 buf,sizeof buf);
1502                         BIO_printf(bio,"issuer=%s\n",buf);
1503                         }
1504                 else
1505                         BIO_printf(bio,"no peer certificate available\n");
1506
1507                 sk2=SSL_get_client_CA_list(s);
1508                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
1509                         {
1510                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
1511                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
1512                                 {
1513                                 xn=sk_X509_NAME_value(sk2,i);
1514                                 X509_NAME_oneline(xn,buf,sizeof(buf));
1515                                 BIO_write(bio,buf,strlen(buf));
1516                                 BIO_write(bio,"\n",1);
1517                                 }
1518                         }
1519                 else
1520                         {
1521                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
1522                         }
1523                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
1524                 if (p != NULL)
1525                         {
1526                         /* This works only for SSL 2.  In later protocol
1527                          * versions, the client does not know what other
1528                          * ciphers (in addition to the one to be used
1529                          * in the current connection) the server supports. */
1530
1531                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
1532                         j=i=0;
1533                         while (*p)
1534                                 {
1535                                 if (*p == ':')
1536                                         {
1537                                         BIO_write(bio,space,15-j%25);
1538                                         i++;
1539                                         j=0;
1540                                         BIO_write(bio,((i%3)?" ":"\n"),1);
1541                                         }
1542                                 else
1543                                         {
1544                                         BIO_write(bio,p,1);
1545                                         j++;
1546                                         }
1547                                 p++;
1548                                 }
1549                         BIO_write(bio,"\n",1);
1550                         }
1551
1552                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
1553                         BIO_number_read(SSL_get_rbio(s)),
1554                         BIO_number_written(SSL_get_wbio(s)));
1555                 }
1556         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
1557         c=SSL_get_current_cipher(s);
1558         BIO_printf(bio,"%s, Cipher is %s\n",
1559                 SSL_CIPHER_get_version(c),
1560                 SSL_CIPHER_get_name(c));
1561         if (peer != NULL) {
1562                 EVP_PKEY *pktmp;
1563                 pktmp = X509_get_pubkey(peer);
1564                 BIO_printf(bio,"Server public key is %d bit\n",
1565                                                          EVP_PKEY_bits(pktmp));
1566                 EVP_PKEY_free(pktmp);
1567         }
1568 #ifndef OPENSSL_NO_COMP
1569         comp=SSL_get_current_compression(s);
1570         expansion=SSL_get_current_expansion(s);
1571         BIO_printf(bio,"Compression: %s\n",
1572                 comp ? SSL_COMP_get_name(comp) : "NONE");
1573         BIO_printf(bio,"Expansion: %s\n",
1574                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
1575 #endif
1576         SSL_SESSION_print(bio,SSL_get_session(s));
1577         BIO_printf(bio,"---\n");
1578         if (peer != NULL)
1579                 X509_free(peer);
1580         /* flush, or debugging output gets mixed with http response */
1581         (void)BIO_flush(bio);
1582         }
1583