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 <openssl/ocsp.h>
 165 #include <openssl/bn.h>
 166 #ifndef OPENSSL_NO_SRP
 167 #include <openssl/srp.h>
 168 #endif
 169 #include "s_apps.h"
 170 #include "timeouts.h"
 171
 172 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
 173 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
 174 #undef FIONBIO
 175 #endif
 176
 177 #if defined(OPENSSL_SYS_BEOS_R5)
 178 #include <fcntl.h>
 179 #endif
 180
 181 #undef PROG
 182 #define PROG    s_client_main
 183
 184 /*#define SSL_HOST_NAME "www.netscape.com" */
 185 /*#define SSL_HOST_NAME "193.118.187.102" */
 186 #define SSL_HOST_NAME   "localhost"
 187
 188 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 189
 190 #undef BUFSIZZ
 191 #define BUFSIZZ 1024*8
 192
 193 extern int verify_depth;
 194 extern int verify_error;
 195 extern int verify_return_error;
 196
 197 #ifdef FIONBIO
 198 static int c_nbio=0;
 199 #endif
 200 static int c_Pause=0;
 201 static int c_debug=0;
 202 #ifndef OPENSSL_NO_TLSEXT
 203 static int c_tlsextdebug=0;
 204 static int c_status_req=0;
 205 #endif
 206 static int c_msg=0;
 207 static int c_showcerts=0;
 208
 209 static char *keymatexportlabel=NULL;
 210 static int keymatexportlen=20;
 211
 212 static void sc_usage(void);
 213 static void print_stuff(BIO *berr,SSL *con,int full);
 214 #ifndef OPENSSL_NO_TLSEXT
 215 static int ocsp_resp_cb(SSL *s, void *arg);
 216 #endif
 217 static BIO *bio_c_out=NULL;
 218 static int c_quiet=0;
 219 static int c_ign_eof=0;
 220
 221 #ifndef OPENSSL_NO_PSK
 222 /* Default PSK identity and key */
 223 static char *psk_identity="Client_identity";
 224 /*char *psk_key=NULL;  by default PSK is not used */
 225
 226 static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity,
 227         unsigned int max_identity_len, unsigned char *psk,
 228         unsigned int max_psk_len)
 229         {
 230         unsigned int psk_len = 0;
 231         int ret;
 232         BIGNUM *bn=NULL;
 233
 234         if (c_debug)
 235                 BIO_printf(bio_c_out, "psk_client_cb\n");
 236         if (!hint)
 237                 {
 238                 /* no ServerKeyExchange message*/
 239                 if (c_debug)
 240                         BIO_printf(bio_c_out,"NULL received PSK identity hint, continuing anyway\n");
 241                 }
 242         else if (c_debug)
 243                 BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint);
 244
 245         /* lookup PSK identity and PSK key based on the given identity hint here */
 246         ret = BIO_snprintf(identity, max_identity_len, "%s", psk_identity);
 247         if (ret < 0 || (unsigned int)ret > max_identity_len)
 248                 goto out_err;
 249         if (c_debug)
 250                 BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity, ret);
 251         ret=BN_hex2bn(&bn, psk_key);
 252         if (!ret)
 253                 {
 254                 BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
 255                 if (bn)
 256                         BN_free(bn);
 257                 return 0;
 258                 }
 259
 260         if ((unsigned int)BN_num_bytes(bn) > max_psk_len)
 261                 {
 262                 BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
 263                         max_psk_len, BN_num_bytes(bn));
 264                 BN_free(bn);
 265                 return 0;
 266                 }
 267
 268         psk_len=BN_bn2bin(bn, psk);
 269         BN_free(bn);
 270         if (psk_len == 0)
 271                 goto out_err;
 272
 273         if (c_debug)
 274                 BIO_printf(bio_c_out, "created PSK len=%d\n", psk_len);
 275
 276         return psk_len;
 277  out_err:
 278         if (c_debug)
 279                 BIO_printf(bio_err, "Error in PSK client callback\n");
 280         return 0;
 281         }
 282 #endif
 283
 284 static void sc_usage(void)
 285         {
 286         BIO_printf(bio_err,"usage: s_client args\n");
 287         BIO_printf(bio_err,"\n");
 288         BIO_printf(bio_err," -host host     - use -connect instead\n");
 289         BIO_printf(bio_err," -port port     - use -connect instead\n");
 290         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 291
 292         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 293         BIO_printf(bio_err," -verify_return_error - return verification errors\n");
 294         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 295         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
 296         BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
 297         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 298         BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
 299         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
 300         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 301         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 302         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 303         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 304         BIO_printf(bio_err," -prexit       - print session information even on connection failure\n");
 305         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 306         BIO_printf(bio_err," -debug        - extra output\n");
 307 #ifdef WATT32
 308         BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
 309 #endif
 310         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 311         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 312         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 313 #ifdef FIONBIO
 314         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 315 #endif
 316         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 317         BIO_printf(bio_err," -quiet        - no s_client output\n");
 318         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 319         BIO_printf(bio_err," -no_ign_eof   - don't ignore input eof\n");
 320 #ifndef OPENSSL_NO_PSK
 321         BIO_printf(bio_err," -psk_identity arg - PSK identity\n");
 322         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
 323 # ifndef OPENSSL_NO_JPAKE
 324         BIO_printf(bio_err," -jpake arg    - JPAKE secret to use\n");
 325 # endif
 326 #endif
 327 #ifndef OPENSSL_NO_SRP
 328         BIO_printf(bio_err," -srpuser user     - SRP authentification for 'user'\n");
 329         BIO_printf(bio_err," -srppass arg      - password for 'user'\n");
 330         BIO_printf(bio_err," -srp_lateuser     - SRP username into second ClientHello message\n");
 331         BIO_printf(bio_err," -srp_moregroups   - Tolerate other than the known g N values.\n");
 332         BIO_printf(bio_err," -srp_strength int - minimal mength in bits for N (default %d).\n",SRP_MINIMAL_N);
 333 #endif
 334         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 335 #ifndef OPENSSL_NO_SSL3_METHOD
 336         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 337 #endif
 338         BIO_printf(bio_err," -tls1_2       - just use TLSv1.2\n");
 339         BIO_printf(bio_err," -tls1_1       - just use TLSv1.1\n");
 340         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 341         BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");
 342         BIO_printf(bio_err," -fallback_scsv - send TLS_FALLBACK_SCSV\n");
 343         BIO_printf(bio_err," -mtu          - set the link layer MTU\n");
 344         BIO_printf(bio_err," -no_tls1_2/-no_tls1_1/-no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 345         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 346         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 347         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 348         BIO_printf(bio_err,"                 command to see what is available\n");
 349         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
 350         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
 351         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
 352         BIO_printf(bio_err,"                 only \"smtp\", \"pop3\", \"imap\", \"ftp\" and \"xmpp\"\n");
 353         BIO_printf(bio_err,"                 are supported.\n");
 354 #ifndef OPENSSL_NO_ENGINE
 355         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 356 #endif
 357         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 358         BIO_printf(bio_err," -sess_out arg - file to write SSL session to\n");
 359         BIO_printf(bio_err," -sess_in arg  - file to read SSL session from\n");
 360 #ifndef OPENSSL_NO_TLSEXT
 361         BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
 362         BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
 363         BIO_printf(bio_err," -status           - request certificate status from server\n");
 364         BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
 365 # ifndef OPENSSL_NO_NEXTPROTONEG
 366         BIO_printf(bio_err," -nextprotoneg arg - enable NPN extension, considering named protocols supported (comma-separated list)\n");
 367 # endif
 368 #endif
 369         BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
 370 #ifndef OPENSSL_NO_SRTP
 371         BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
 372 #endif
 373         BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
 374         BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
 375         }
 376
 377 #ifndef OPENSSL_NO_TLSEXT
 378
 379 /* This is a context that we pass to callbacks */
 380 typedef struct tlsextctx_st {
 381    BIO * biodebug;
 382    int ack;
 383 } tlsextctx;
 384
 385
 386 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
 387         {
 388         tlsextctx * p = (tlsextctx *) arg;
 389         const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
 390         if (SSL_get_servername_type(s) != -1)
 391                 p->ack = !SSL_session_reused(s) && hn != NULL;
 392         else
 393                 BIO_printf(bio_err,"Can't use SSL_get_servername\n");
 394
 395         return SSL_TLSEXT_ERR_OK;
 396         }
 397
 398 #ifndef OPENSSL_NO_SRP
 399
 400 /* This is a context that we pass to all callbacks */
 401 typedef struct srp_arg_st
 402         {
 403         char *srppassin;
 404         char *srplogin;
 405         int msg;   /* copy from c_msg */
 406         int debug; /* copy from c_debug */
 407         int amp;   /* allow more groups */
 408         int strength /* minimal size for N */ ;
 409         } SRP_ARG;
 410
 411 #define SRP_NUMBER_ITERATIONS_FOR_PRIME 64
 412
 413 static int srp_Verify_N_and_g(BIGNUM *N, BIGNUM *g)
 414         {
 415         BN_CTX *bn_ctx = BN_CTX_new();
 416         BIGNUM *p = BN_new();
 417         BIGNUM *r = BN_new();
 418         int ret =
 419                 g != NULL && N != NULL && bn_ctx != NULL && BN_is_odd(N) &&
 420                 BN_is_prime_ex(N, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
 421                 p != NULL && BN_rshift1(p, N) &&
 422
 423                 /* p = (N-1)/2 */
 424                 BN_is_prime_ex(p, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
 425                 r != NULL &&
 426
 427                 /* verify g^((N-1)/2) == -1 (mod N) */
 428                 BN_mod_exp(r, g, p, N, bn_ctx) &&
 429                 BN_add_word(r, 1) &&
 430                 BN_cmp(r, N) == 0;
 431
 432         if(r)
 433                 BN_free(r);
 434         if(p)
 435                 BN_free(p);
 436         if(bn_ctx)
 437                 BN_CTX_free(bn_ctx);
 438         return ret;
 439         }
 440
 441 /* This callback is used here for two purposes:
 442    - extended debugging
 443    - making some primality tests for unknown groups
 444    The callback is only called for a non default group.
 445
 446    An application does not need the call back at all if
 447    only the stanard groups are used.  In real life situations,
 448    client and server already share well known groups,
 449    thus there is no need to verify them.
 450    Furthermore, in case that a server actually proposes a group that
 451    is not one of those defined in RFC 5054, it is more appropriate
 452    to add the group to a static list and then compare since
 453    primality tests are rather cpu consuming.
 454 */
 455
 456 static int MS_CALLBACK ssl_srp_verify_param_cb(SSL *s, void *arg)
 457         {
 458         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 459         BIGNUM *N = NULL, *g = NULL;
 460         if (!(N = SSL_get_srp_N(s)) || !(g = SSL_get_srp_g(s)))
 461                 return 0;
 462         if (srp_arg->debug || srp_arg->msg || srp_arg->amp == 1)
 463                 {
 464                 BIO_printf(bio_err, "SRP parameters:\n");
 465                 BIO_printf(bio_err,"\tN="); BN_print(bio_err,N);
 466                 BIO_printf(bio_err,"\n\tg="); BN_print(bio_err,g);
 467                 BIO_printf(bio_err,"\n");
 468                 }
 469
 470         if (SRP_check_known_gN_param(g,N))
 471                 return 1;
 472
 473         if (srp_arg->amp == 1)
 474                 {
 475                 if (srp_arg->debug)
 476                         BIO_printf(bio_err, "SRP param N and g are not known params, going to check deeper.\n");
 477
 478 /* The srp_moregroups is a real debugging feature.
 479    Implementors should rather add the value to the known ones.
 480    The minimal size has already been tested.
 481 */
 482                 if (BN_num_bits(g) <= BN_BITS && srp_Verify_N_and_g(N,g))
 483                         return 1;
 484                 }
 485         BIO_printf(bio_err, "SRP param N and g rejected.\n");
 486         return 0;
 487         }
 488
 489 #define PWD_STRLEN 1024
 490
 491 static char * MS_CALLBACK ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
 492         {
 493         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 494         char *pass = (char *)OPENSSL_malloc(PWD_STRLEN+1);
 495         PW_CB_DATA cb_tmp;
 496         int l;
 497
 498         cb_tmp.password = (char *)srp_arg->srppassin;
 499         cb_tmp.prompt_info = "SRP user";
 500         if ((l = password_callback(pass, PWD_STRLEN, 0, &cb_tmp))<0)
 501                 {
 502                 BIO_printf (bio_err, "Can't read Password\n");
 503                 OPENSSL_free(pass);
 504                 return NULL;
 505                 }
 506         *(pass+l)= '\0';
 507
 508         return pass;
 509         }
 510
 511 #endif
 512 #ifndef OPENSSL_NO_SRTP
 513         char *srtp_profiles = NULL;
 514 #endif
 515
 516 # ifndef OPENSSL_NO_NEXTPROTONEG
 517 /* This the context that we pass to next_proto_cb */
 518 typedef struct tlsextnextprotoctx_st {
 519         unsigned char *data;
 520         unsigned short len;
 521         int status;
 522 } tlsextnextprotoctx;
 523
 524 static tlsextnextprotoctx next_proto;
 525
 526 static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
 527         {
 528         tlsextnextprotoctx *ctx = arg;
 529
 530         if (!c_quiet)
 531                 {
 532                 /* We can assume that |in| is syntactically valid. */
 533                 unsigned i;
 534                 BIO_printf(bio_c_out, "Protocols advertised by server: ");
 535                 for (i = 0; i < inlen; )
 536                         {
 537                         if (i)
 538                                 BIO_write(bio_c_out, ", ", 2);
 539                         BIO_write(bio_c_out, &in[i + 1], in[i]);
 540                         i += in[i] + 1;
 541                         }
 542                 BIO_write(bio_c_out, "\n", 1);
 543                 }
 544
 545         ctx->status = SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len);
 546         return SSL_TLSEXT_ERR_OK;
 547         }
 548 # endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
 549 #endif
 550
 551 enum
 552 {
 553         PROTO_OFF       = 0,
 554         PROTO_SMTP,
 555         PROTO_POP3,
 556         PROTO_IMAP,
 557         PROTO_FTP,
 558         PROTO_XMPP
 559 };
 560
 561 int MAIN(int, char **);
 562
 563 int MAIN(int argc, char **argv)
 564         {
 565         unsigned int off=0, clr=0;
 566         SSL *con=NULL;
 567 #ifndef OPENSSL_NO_KRB5
 568         KSSL_CTX *kctx;
 569 #endif
 570         int s,k,width,state=0;
 571         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
 572         int cbuf_len,cbuf_off;
 573         int sbuf_len,sbuf_off;
 574         fd_set readfds,writefds;
 575         short port=PORT;
 576         int full_log=1;
 577         char *host=SSL_HOST_NAME;
 578         char *cert_file=NULL,*key_file=NULL;
 579         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
 580         char *passarg = NULL, *pass = NULL;
 581         X509 *cert = NULL;
 582         EVP_PKEY *key = NULL;
 583         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 584         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 585         int crlf=0;
 586         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 587         SSL_CTX *ctx=NULL;
 588         int ret=1,in_init=1,i,nbio_test=0;
 589         int starttls_proto = PROTO_OFF;
 590         int prexit = 0;
 591         X509_VERIFY_PARAM *vpm = NULL;
 592         int badarg = 0;
 593         const SSL_METHOD *meth=NULL;
 594         int socket_type=SOCK_STREAM;
 595         BIO *sbio;
 596         char *inrand=NULL;
 597         int mbuf_len=0;
 598         struct timeval timeout, *timeoutp;
 599 #ifndef OPENSSL_NO_ENGINE
 600         char *engine_id=NULL;
 601         char *ssl_client_engine_id=NULL;
 602         ENGINE *ssl_client_engine=NULL;
 603 #endif
 604         ENGINE *e=NULL;
 605 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
 606         struct timeval tv;
 607 #if defined(OPENSSL_SYS_BEOS_R5)
 608         int stdin_set = 0;
 609 #endif
 610 #endif
 611 #ifndef OPENSSL_NO_TLSEXT
 612         char *servername = NULL;
 613         tlsextctx tlsextcbp =
 614         {NULL,0};
 615 # ifndef OPENSSL_NO_NEXTPROTONEG
 616         const char *next_proto_neg_in = NULL;
 617 # endif
 618 #endif
 619         char *sess_in = NULL;
 620         char *sess_out = NULL;
 621         struct sockaddr peer;
 622         int peerlen = sizeof(peer);
 623         int fallback_scsv = 0;
 624         int enable_timeouts = 0 ;
 625         long socket_mtu = 0;
 626 #ifndef OPENSSL_NO_JPAKE
 627         char *jpake_secret = NULL;
 628 #endif
 629 #ifndef OPENSSL_NO_SRP
 630         char * srppass = NULL;
 631         int srp_lateuser = 0;
 632         SRP_ARG srp_arg = {NULL,NULL,0,0,0,1024};
 633 #endif
 634
 635         meth=SSLv23_client_method();
 636
 637         apps_startup();
 638         c_Pause=0;
 639         c_quiet=0;
 640         c_ign_eof=0;
 641         c_debug=0;
 642         c_msg=0;
 643         c_showcerts=0;
 644
 645         if (bio_err == NULL)
 646                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 647
 648         if (!load_config(bio_err, NULL))
 649                 goto end;
 650
 651         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 652                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 653                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 654                 {
 655                 BIO_printf(bio_err,"out of memory\n");
 656                 goto end;
 657                 }
 658
 659         verify_depth=0;
 660         verify_error=X509_V_OK;
 661 #ifdef FIONBIO
 662         c_nbio=0;
 663 #endif
 664
 665         argc--;
 666         argv++;
 667         while (argc >= 1)
 668                 {
 669                 if      (strcmp(*argv,"-host") == 0)
 670                         {
 671                         if (--argc < 1) goto bad;
 672                         host= *(++argv);
 673                         }
 674                 else if (strcmp(*argv,"-port") == 0)
 675                         {
 676                         if (--argc < 1) goto bad;
 677                         port=atoi(*(++argv));
 678                         if (port == 0) goto bad;
 679                         }
 680                 else if (strcmp(*argv,"-connect") == 0)
 681                         {
 682                         if (--argc < 1) goto bad;
 683                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 684                                 goto bad;
 685                         }
 686                 else if (strcmp(*argv,"-verify") == 0)
 687                         {
 688                         verify=SSL_VERIFY_PEER;
 689                         if (--argc < 1) goto bad;
 690                         verify_depth=atoi(*(++argv));
 691                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 692                         }
 693                 else if (strcmp(*argv,"-cert") == 0)
 694                         {
 695                         if (--argc < 1) goto bad;
 696                         cert_file= *(++argv);
 697                         }
 698                 else if (strcmp(*argv,"-sess_out") == 0)
 699                         {
 700                         if (--argc < 1) goto bad;
 701                         sess_out = *(++argv);
 702                         }
 703                 else if (strcmp(*argv,"-sess_in") == 0)
 704                         {
 705                         if (--argc < 1) goto bad;
 706                         sess_in = *(++argv);
 707                         }
 708                 else if (strcmp(*argv,"-certform") == 0)
 709                         {
 710                         if (--argc < 1) goto bad;
 711                         cert_format = str2fmt(*(++argv));
 712                         }
 713                 else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm))
 714                         {
 715                         if (badarg)
 716                                 goto bad;
 717                         continue;
 718                         }
 719                 else if (strcmp(*argv,"-verify_return_error") == 0)
 720                         verify_return_error = 1;
 721                 else if (strcmp(*argv,"-prexit") == 0)
 722                         prexit=1;
 723                 else if (strcmp(*argv,"-crlf") == 0)
 724                         crlf=1;
 725                 else if (strcmp(*argv,"-quiet") == 0)
 726                         {
 727                         c_quiet=1;
 728                         c_ign_eof=1;
 729                         }
 730                 else if (strcmp(*argv,"-ign_eof") == 0)
 731                         c_ign_eof=1;
 732                 else if (strcmp(*argv,"-no_ign_eof") == 0)
 733                         c_ign_eof=0;
 734                 else if (strcmp(*argv,"-pause") == 0)
 735                         c_Pause=1;
 736                 else if (strcmp(*argv,"-debug") == 0)
 737                         c_debug=1;
 738 #ifndef OPENSSL_NO_TLSEXT
 739                 else if (strcmp(*argv,"-tlsextdebug") == 0)
 740                         c_tlsextdebug=1;
 741                 else if (strcmp(*argv,"-status") == 0)
 742                         c_status_req=1;
 743 #endif
 744 #ifdef WATT32
 745                 else if (strcmp(*argv,"-wdebug") == 0)
 746                         dbug_init();
 747 #endif
 748                 else if (strcmp(*argv,"-msg") == 0)
 749                         c_msg=1;
 750                 else if (strcmp(*argv,"-showcerts") == 0)
 751                         c_showcerts=1;
 752                 else if (strcmp(*argv,"-nbio_test") == 0)
 753                         nbio_test=1;
 754                 else if (strcmp(*argv,"-state") == 0)
 755                         state=1;
 756 #ifndef OPENSSL_NO_PSK
 757                 else if (strcmp(*argv,"-psk_identity") == 0)
 758                         {
 759                         if (--argc < 1) goto bad;
 760                         psk_identity=*(++argv);
 761                         }
 762                 else if (strcmp(*argv,"-psk") == 0)
 763                         {
 764                         size_t j;
 765
 766                         if (--argc < 1) goto bad;
 767                         psk_key=*(++argv);
 768                         for (j = 0; j < strlen(psk_key); j++)
 769                                 {
 770                                 if (isxdigit((unsigned char)psk_key[j]))
 771                                         continue;
 772                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
 773                                 goto bad;
 774                                 }
 775                         }
 776 #endif
 777 #ifndef OPENSSL_NO_SRP
 778                 else if (strcmp(*argv,"-srpuser") == 0)
 779                         {
 780                         if (--argc < 1) goto bad;
 781                         srp_arg.srplogin= *(++argv);
 782                         meth=TLSv1_client_method();
 783                         }
 784                 else if (strcmp(*argv,"-srppass") == 0)
 785                         {
 786                         if (--argc < 1) goto bad;
 787                         srppass= *(++argv);
 788                         meth=TLSv1_client_method();
 789                         }
 790                 else if (strcmp(*argv,"-srp_strength") == 0)
 791                         {
 792                         if (--argc < 1) goto bad;
 793                         srp_arg.strength=atoi(*(++argv));
 794                         BIO_printf(bio_err,"SRP minimal length for N is %d\n",srp_arg.strength);
 795                         meth=TLSv1_client_method();
 796                         }
 797                 else if (strcmp(*argv,"-srp_lateuser") == 0)
 798                         {
 799                         srp_lateuser= 1;
 800                         meth=TLSv1_client_method();
 801                         }
 802                 else if (strcmp(*argv,"-srp_moregroups") == 0)
 803                         {
 804                         srp_arg.amp=1;
 805                         meth=TLSv1_client_method();
 806                         }
 807 #endif
 808 #ifndef OPENSSL_NO_SSL2
 809                 else if (strcmp(*argv,"-ssl2") == 0)
 810                         meth=SSLv2_client_method();
 811 #endif
 812 #ifndef OPENSSL_NO_SSL3_METHOD
 813                 else if (strcmp(*argv,"-ssl3") == 0)
 814                         meth=SSLv3_client_method();
 815 #endif
 816 #ifndef OPENSSL_NO_TLS1
 817                 else if (strcmp(*argv,"-tls1_2") == 0)
 818                         meth=TLSv1_2_client_method();
 819                 else if (strcmp(*argv,"-tls1_1") == 0)
 820                         meth=TLSv1_1_client_method();
 821                 else if (strcmp(*argv,"-tls1") == 0)
 822                         meth=TLSv1_client_method();
 823 #endif
 824 #ifndef OPENSSL_NO_DTLS1
 825                 else if (strcmp(*argv,"-dtls1") == 0)
 826                         {
 827                         meth=DTLSv1_client_method();
 828                         socket_type=SOCK_DGRAM;
 829                         }
 830                 else if (strcmp(*argv,"-fallback_scsv") == 0)
 831                         {
 832                         fallback_scsv = 1;
 833                         }
 834                 else if (strcmp(*argv,"-timeout") == 0)
 835                         enable_timeouts=1;
 836                 else if (strcmp(*argv,"-mtu") == 0)
 837                         {
 838                         if (--argc < 1) goto bad;
 839                         socket_mtu = atol(*(++argv));
 840                         }
 841 #endif
 842                 else if (strcmp(*argv,"-bugs") == 0)
 843                         bugs=1;
 844                 else if (strcmp(*argv,"-keyform") == 0)
 845                         {
 846                         if (--argc < 1) goto bad;
 847                         key_format = str2fmt(*(++argv));
 848                         }
 849                 else if (strcmp(*argv,"-pass") == 0)
 850                         {
 851                         if (--argc < 1) goto bad;
 852                         passarg = *(++argv);
 853                         }
 854                 else if (strcmp(*argv,"-key") == 0)
 855                         {
 856                         if (--argc < 1) goto bad;
 857                         key_file= *(++argv);
 858                         }
 859                 else if (strcmp(*argv,"-reconnect") == 0)
 860                         {
 861                         reconnect=5;
 862                         }
 863                 else if (strcmp(*argv,"-CApath") == 0)
 864                         {
 865                         if (--argc < 1) goto bad;
 866                         CApath= *(++argv);
 867                         }
 868                 else if (strcmp(*argv,"-CAfile") == 0)
 869                         {
 870                         if (--argc < 1) goto bad;
 871                         CAfile= *(++argv);
 872                         }
 873                 else if (strcmp(*argv,"-no_tls1_2") == 0)
 874                         off|=SSL_OP_NO_TLSv1_2;
 875                 else if (strcmp(*argv,"-no_tls1_1") == 0)
 876                         off|=SSL_OP_NO_TLSv1_1;
 877                 else if (strcmp(*argv,"-no_tls1") == 0)
 878                         off|=SSL_OP_NO_TLSv1;
 879                 else if (strcmp(*argv,"-no_ssl3") == 0)
 880                         off|=SSL_OP_NO_SSLv3;
 881                 else if (strcmp(*argv,"-no_ssl2") == 0)
 882                         off|=SSL_OP_NO_SSLv2;
 883                 else if (strcmp(*argv,"-no_comp") == 0)
 884                         { off|=SSL_OP_NO_COMPRESSION; }
 885 #ifndef OPENSSL_NO_TLSEXT
 886                 else if (strcmp(*argv,"-no_ticket") == 0)
 887                         { off|=SSL_OP_NO_TICKET; }
 888 # ifndef OPENSSL_NO_NEXTPROTONEG
 889                 else if (strcmp(*argv,"-nextprotoneg") == 0)
 890                         {
 891                         if (--argc < 1) goto bad;
 892                         next_proto_neg_in = *(++argv);
 893                         }
 894 # endif
 895 #endif
 896                 else if (strcmp(*argv,"-serverpref") == 0)
 897                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 898                 else if (strcmp(*argv,"-legacy_renegotiation") == 0)
 899                         off|=SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
 900                 else if (strcmp(*argv,"-legacy_server_connect") == 0)
 901                         { off|=SSL_OP_LEGACY_SERVER_CONNECT; }
 902                 else if (strcmp(*argv,"-no_legacy_server_connect") == 0)
 903                         { clr|=SSL_OP_LEGACY_SERVER_CONNECT; }
 904                 else if (strcmp(*argv,"-cipher") == 0)
 905                         {
 906                         if (--argc < 1) goto bad;
 907                         cipher= *(++argv);
 908                         }
 909 #ifdef FIONBIO
 910                 else if (strcmp(*argv,"-nbio") == 0)
 911                         { c_nbio=1; }
 912 #endif
 913                 else if (strcmp(*argv,"-starttls") == 0)
 914                         {
 915                         if (--argc < 1) goto bad;
 916                         ++argv;
 917                         if (strcmp(*argv,"smtp") == 0)
 918                                 starttls_proto = PROTO_SMTP;
 919                         else if (strcmp(*argv,"pop3") == 0)
 920                                 starttls_proto = PROTO_POP3;
 921                         else if (strcmp(*argv,"imap") == 0)
 922                                 starttls_proto = PROTO_IMAP;
 923                         else if (strcmp(*argv,"ftp") == 0)
 924                                 starttls_proto = PROTO_FTP;
 925                         else if (strcmp(*argv, "xmpp") == 0)
 926                                 starttls_proto = PROTO_XMPP;
 927                         else
 928                                 goto bad;
 929                         }
 930 #ifndef OPENSSL_NO_ENGINE
 931                 else if (strcmp(*argv,"-engine") == 0)
 932                         {
 933                         if (--argc < 1) goto bad;
 934                         engine_id = *(++argv);
 935                         }
 936                 else if (strcmp(*argv,"-ssl_client_engine") == 0)
 937                         {
 938                         if (--argc < 1) goto bad;
 939                         ssl_client_engine_id = *(++argv);
 940                         }
 941 #endif
 942                 else if (strcmp(*argv,"-rand") == 0)
 943                         {
 944                         if (--argc < 1) goto bad;
 945                         inrand= *(++argv);
 946                         }
 947 #ifndef OPENSSL_NO_TLSEXT
 948                 else if (strcmp(*argv,"-servername") == 0)
 949                         {
 950                         if (--argc < 1) goto bad;
 951                         servername= *(++argv);
 952                         /* meth=TLSv1_client_method(); */
 953                         }
 954 #endif
 955 #ifndef OPENSSL_NO_JPAKE
 956                 else if (strcmp(*argv,"-jpake") == 0)
 957                         {
 958                         if (--argc < 1) goto bad;
 959                         jpake_secret = *++argv;
 960                         }
 961 #endif
 962 #ifndef OPENSSL_NO_SRTP
 963                 else if (strcmp(*argv,"-use_srtp") == 0)
 964                         {
 965                         if (--argc < 1) goto bad;
 966                         srtp_profiles = *(++argv);
 967                         }
 968 #endif
 969                 else if (strcmp(*argv,"-keymatexport") == 0)
 970                         {
 971                         if (--argc < 1) goto bad;
 972                         keymatexportlabel= *(++argv);
 973                         }
 974                 else if (strcmp(*argv,"-keymatexportlen") == 0)
 975                         {
 976                         if (--argc < 1) goto bad;
 977                         keymatexportlen=atoi(*(++argv));
 978                         if (keymatexportlen == 0) goto bad;
 979                         }
 980                 else
 981                         {
 982                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 983                         badop=1;
 984                         break;
 985                         }
 986                 argc--;
 987                 argv++;
 988                 }
 989         if (badop)
 990                 {
 991 bad:
 992                 sc_usage();
 993                 goto end;
 994                 }
 995
 996 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
 997         if (jpake_secret)
 998                 {
 999                 if (psk_key)
1000                         {
1001                         BIO_printf(bio_err,
1002                                    "Can't use JPAKE and PSK together\n");
1003                         goto end;
1004                         }
1005                 psk_identity = "JPAKE";
1006                 if (cipher)
1007                         {
1008                         BIO_printf(bio_err, "JPAKE sets cipher to PSK\n");
1009                         goto end;
1010                         }
1011                 cipher = "PSK";
1012                 }
1013 #endif
1014
1015         OpenSSL_add_ssl_algorithms();
1016         SSL_load_error_strings();
1017
1018 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1019         next_proto.status = -1;
1020         if (next_proto_neg_in)
1021                 {
1022                 next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
1023                 if (next_proto.data == NULL)
1024                         {
1025                         BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
1026                         goto end;
1027                         }
1028                 }
1029         else
1030                 next_proto.data = NULL;
1031 #endif
1032
1033 #ifndef OPENSSL_NO_ENGINE
1034         e = setup_engine(bio_err, engine_id, 1);
1035         if (ssl_client_engine_id)
1036                 {
1037                 ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
1038                 if (!ssl_client_engine)
1039                         {
1040                         BIO_printf(bio_err,
1041                                         "Error getting client auth engine\n");
1042                         goto end;
1043                         }
1044                 }
1045
1046 #endif
1047         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
1048                 {
1049                 BIO_printf(bio_err, "Error getting password\n");
1050                 goto end;
1051                 }
1052
1053         if (key_file == NULL)
1054                 key_file = cert_file;
1055
1056
1057         if (key_file)
1058
1059                 {
1060
1061                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
1062                                "client certificate private key file");
1063                 if (!key)
1064                         {
1065                         ERR_print_errors(bio_err);
1066                         goto end;
1067                         }
1068
1069                 }
1070
1071         if (cert_file)
1072
1073                 {
1074                 cert = load_cert(bio_err,cert_file,cert_format,
1075                                 NULL, e, "client certificate file");
1076
1077                 if (!cert)
1078                         {
1079                         ERR_print_errors(bio_err);
1080                         goto end;
1081                         }
1082                 }
1083
1084         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1085                 && !RAND_status())
1086                 {
1087                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1088                 }
1089         if (inrand != NULL)
1090                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1091                         app_RAND_load_files(inrand));
1092
1093         if (bio_c_out == NULL)
1094                 {
1095                 if (c_quiet && !c_debug && !c_msg)
1096                         {
1097                         bio_c_out=BIO_new(BIO_s_null());
1098                         }
1099                 else
1100                         {
1101                         if (bio_c_out == NULL)
1102                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1103                         }
1104                 }
1105
1106 #ifndef OPENSSL_NO_SRP
1107         if(!app_passwd(bio_err, srppass, NULL, &srp_arg.srppassin, NULL))
1108                 {
1109                 BIO_printf(bio_err, "Error getting password\n");
1110                 goto end;
1111                 }
1112 #endif
1113
1114         ctx=SSL_CTX_new(meth);
1115         if (ctx == NULL)
1116                 {
1117                 ERR_print_errors(bio_err);
1118                 goto end;
1119                 }
1120
1121         if (vpm)
1122                 SSL_CTX_set1_param(ctx, vpm);
1123
1124 #ifndef OPENSSL_NO_ENGINE
1125         if (ssl_client_engine)
1126                 {
1127                 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
1128                         {
1129                         BIO_puts(bio_err, "Error setting client auth engine\n");
1130                         ERR_print_errors(bio_err);
1131                         ENGINE_free(ssl_client_engine);
1132                         goto end;
1133                         }
1134                 ENGINE_free(ssl_client_engine);
1135                 }
1136 #endif
1137
1138 #ifndef OPENSSL_NO_PSK
1139 #ifdef OPENSSL_NO_JPAKE
1140         if (psk_key != NULL)
1141 #else
1142         if (psk_key != NULL || jpake_secret)
1143 #endif
1144                 {
1145                 if (c_debug)
1146                         BIO_printf(bio_c_out, "PSK key given or JPAKE in use, setting client callback\n");
1147                 SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
1148                 }
1149 #endif
1150 #ifndef OPENSSL_NO_SRTP
1151         if (srtp_profiles != NULL)
1152                 SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
1153 #endif
1154         if (bugs)
1155                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
1156         else
1157                 SSL_CTX_set_options(ctx,off);
1158
1159         if (clr)
1160                 SSL_CTX_clear_options(ctx, clr);
1161         /* DTLS: partial reads end up discarding unread UDP bytes :-(
1162          * Setting read ahead solves this problem.
1163          */
1164         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1165
1166 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1167         if (next_proto.data)
1168                 SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
1169 #endif
1170
1171         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1172         if (cipher != NULL)
1173                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
1174                 BIO_printf(bio_err,"error setting cipher list\n");
1175                 ERR_print_errors(bio_err);
1176                 goto end;
1177         }
1178 #if 0
1179         else
1180                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
1181 #endif
1182
1183         SSL_CTX_set_verify(ctx,verify,verify_callback);
1184         if (!set_cert_key_stuff(ctx,cert,key))
1185                 goto end;
1186
1187         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1188                 (!SSL_CTX_set_default_verify_paths(ctx)))
1189                 {
1190                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
1191                 ERR_print_errors(bio_err);
1192                 /* goto end; */
1193                 }
1194
1195 #ifndef OPENSSL_NO_TLSEXT
1196         if (servername != NULL)
1197                 {
1198                 tlsextcbp.biodebug = bio_err;
1199                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1200                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1201                 }
1202 #ifndef OPENSSL_NO_SRP
1203         if (srp_arg.srplogin)
1204                 {
1205                 if (!srp_lateuser && !SSL_CTX_set_srp_username(ctx, srp_arg.srplogin))
1206                         {
1207                         BIO_printf(bio_err,"Unable to set SRP username\n");
1208                         goto end;
1209                         }
1210                 srp_arg.msg = c_msg;
1211                 srp_arg.debug = c_debug ;
1212                 SSL_CTX_set_srp_cb_arg(ctx,&srp_arg);
1213                 SSL_CTX_set_srp_client_pwd_callback(ctx, ssl_give_srp_client_pwd_cb);
1214                 SSL_CTX_set_srp_strength(ctx, srp_arg.strength);
1215                 if (c_msg || c_debug || srp_arg.amp == 0)
1216                         SSL_CTX_set_srp_verify_param_callback(ctx, ssl_srp_verify_param_cb);
1217                 }
1218
1219 #endif
1220 #endif
1221
1222         con=SSL_new(ctx);
1223         if (sess_in)
1224                 {
1225                 SSL_SESSION *sess;
1226                 BIO *stmp = BIO_new_file(sess_in, "r");
1227                 if (!stmp)
1228                         {
1229                         BIO_printf(bio_err, "Can't open session file %s\n",
1230                                                 sess_in);
1231                         ERR_print_errors(bio_err);
1232                         goto end;
1233                         }
1234                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
1235                 BIO_free(stmp);
1236                 if (!sess)
1237                         {
1238                         BIO_printf(bio_err, "Can't open session file %s\n",
1239                                                 sess_in);
1240                         ERR_print_errors(bio_err);
1241                         goto end;
1242                         }
1243                 SSL_set_session(con, sess);
1244                 SSL_SESSION_free(sess);
1245                 }
1246
1247         if (fallback_scsv)
1248                 SSL_set_mode(con, SSL_MODE_SEND_FALLBACK_SCSV);
1249
1250 #ifndef OPENSSL_NO_TLSEXT
1251         if (servername != NULL)
1252                 {
1253                 if (!SSL_set_tlsext_host_name(con,servername))
1254                         {
1255                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
1256                         ERR_print_errors(bio_err);
1257                         goto end;
1258                         }
1259                 }
1260 #endif
1261 #ifndef OPENSSL_NO_KRB5
1262         if (con  &&  (kctx = kssl_ctx_new()) != NULL)
1263                 {
1264                 SSL_set0_kssl_ctx(con, kctx);
1265                 kssl_ctx_setstring(kctx, KSSL_SERVER, host);
1266                 }
1267 #endif  /* OPENSSL_NO_KRB5  */
1268 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
1269 #if 0
1270 #ifdef TLSEXT_TYPE_opaque_prf_input
1271         SSL_set_tlsext_opaque_prf_input(con, "Test client", 11);
1272 #endif
1273 #endif
1274
1275 re_start:
1276
1277         if (init_client(&s,host,port,socket_type) == 0)
1278                 {
1279                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
1280                 SHUTDOWN(s);
1281                 goto end;
1282                 }
1283         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
1284
1285 #ifdef FIONBIO
1286         if (c_nbio)
1287                 {
1288                 unsigned long l=1;
1289                 BIO_printf(bio_c_out,"turning on non blocking io\n");
1290                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
1291                         {
1292                         ERR_print_errors(bio_err);
1293                         goto end;
1294                         }
1295                 }
1296 #endif
1297         if (c_Pause & 0x01) SSL_set_debug(con, 1);
1298
1299         if ( SSL_version(con) == DTLS1_VERSION)
1300                 {
1301
1302                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1303                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
1304                         {
1305                         BIO_printf(bio_err, "getsockname:errno=%d\n",
1306                                 get_last_socket_error());
1307                         SHUTDOWN(s);
1308                         goto end;
1309                         }
1310
1311                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
1312
1313                 if (enable_timeouts)
1314                         {
1315                         timeout.tv_sec = 0;
1316                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1317                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1318
1319                         timeout.tv_sec = 0;
1320                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1321                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1322                         }
1323
1324                 if (socket_mtu)
1325                         {
1326                         if(socket_mtu < DTLS_get_link_min_mtu(con))
1327                                 {
1328                                 BIO_printf(bio_err,"MTU too small. Must be at least %ld\n",
1329                                         DTLS_get_link_min_mtu(con));
1330                                 BIO_free(sbio);
1331                                 goto shut;
1332                                 }
1333                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1334                         if(!DTLS_set_link_mtu(con, socket_mtu))
1335                                 {
1336                                 BIO_printf(bio_err, "Failed to set MTU\n");
1337                                 BIO_free(sbio);
1338                                 goto shut;
1339                                 }
1340                         }
1341                 else
1342                         /* want to do MTU discovery */
1343                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1344                 }
1345         else
1346                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1347
1348         if (nbio_test)
1349                 {
1350                 BIO *test;
1351
1352                 test=BIO_new(BIO_f_nbio_test());
1353                 sbio=BIO_push(test,sbio);
1354                 }
1355
1356         if (c_debug)
1357                 {
1358                 SSL_set_debug(con, 1);
1359                 BIO_set_callback(sbio,bio_dump_callback);
1360                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
1361                 }
1362         if (c_msg)
1363                 {
1364                 SSL_set_msg_callback(con, msg_cb);
1365                 SSL_set_msg_callback_arg(con, bio_c_out);
1366                 }
1367 #ifndef OPENSSL_NO_TLSEXT
1368         if (c_tlsextdebug)
1369                 {
1370                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
1371                 SSL_set_tlsext_debug_arg(con, bio_c_out);
1372                 }
1373         if (c_status_req)
1374                 {
1375                 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
1376                 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
1377                 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
1378 #if 0
1379 {
1380 STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
1381 OCSP_RESPID *id = OCSP_RESPID_new();
1382 id->value.byKey = ASN1_OCTET_STRING_new();
1383 id->type = V_OCSP_RESPID_KEY;
1384 ASN1_STRING_set(id->value.byKey, "Hello World", -1);
1385 sk_OCSP_RESPID_push(ids, id);
1386 SSL_set_tlsext_status_ids(con, ids);
1387 }
1388 #endif
1389                 }
1390 #endif
1391 #ifndef OPENSSL_NO_JPAKE
1392         if (jpake_secret)
1393                 jpake_client_auth(bio_c_out, sbio, jpake_secret);
1394 #endif
1395
1396         SSL_set_bio(con,sbio,sbio);
1397         SSL_set_connect_state(con);
1398
1399         /* ok, lets connect */
1400         width=SSL_get_fd(con)+1;
1401
1402         read_tty=1;
1403         write_tty=0;
1404         tty_on=0;
1405         read_ssl=1;
1406         write_ssl=1;
1407
1408         cbuf_len=0;
1409         cbuf_off=0;
1410         sbuf_len=0;
1411         sbuf_off=0;
1412
1413         /* This is an ugly hack that does a lot of assumptions */
1414         /* We do have to handle multi-line responses which may come
1415            in a single packet or not. We therefore have to use
1416            BIO_gets() which does need a buffering BIO. So during
1417            the initial chitchat we do push a buffering BIO into the
1418            chain that is removed again later on to not disturb the
1419            rest of the s_client operation. */
1420         if (starttls_proto == PROTO_SMTP)
1421                 {
1422                 int foundit=0;
1423                 BIO *fbio = BIO_new(BIO_f_buffer());
1424                 BIO_push(fbio, sbio);
1425                 /* wait for multi-line response to end from SMTP */
1426                 do
1427                         {
1428                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1429                         }
1430                 while (mbuf_len>3 && mbuf[3]=='-');
1431                 /* STARTTLS command requires EHLO... */
1432                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
1433                 (void)BIO_flush(fbio);
1434                 /* wait for multi-line response to end EHLO SMTP response */
1435                 do
1436                         {
1437                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1438                         if (strstr(mbuf,"STARTTLS"))
1439                                 foundit=1;
1440                         }
1441                 while (mbuf_len>3 && mbuf[3]=='-');
1442                 (void)BIO_flush(fbio);
1443                 BIO_pop(fbio);
1444                 BIO_free(fbio);
1445                 if (!foundit)
1446                         BIO_printf(bio_err,
1447                                    "didn't found starttls in server response,"
1448                                    " try anyway...\n");
1449                 BIO_printf(sbio,"STARTTLS\r\n");
1450                 BIO_read(sbio,sbuf,BUFSIZZ);
1451                 }
1452         else if (starttls_proto == PROTO_POP3)
1453                 {
1454                 BIO_read(sbio,mbuf,BUFSIZZ);
1455                 BIO_printf(sbio,"STLS\r\n");
1456                 BIO_read(sbio,sbuf,BUFSIZZ);
1457                 }
1458         else if (starttls_proto == PROTO_IMAP)
1459                 {
1460                 int foundit=0;
1461                 BIO *fbio = BIO_new(BIO_f_buffer());
1462                 BIO_push(fbio, sbio);
1463                 BIO_gets(fbio,mbuf,BUFSIZZ);
1464                 /* STARTTLS command requires CAPABILITY... */
1465                 BIO_printf(fbio,". CAPABILITY\r\n");
1466                 (void)BIO_flush(fbio);
1467                 /* wait for multi-line CAPABILITY response */
1468                 do
1469                         {
1470                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1471                         if (strstr(mbuf,"STARTTLS"))
1472                                 foundit=1;
1473                         }
1474                 while (mbuf_len>3 && mbuf[0]!='.');
1475                 (void)BIO_flush(fbio);
1476                 BIO_pop(fbio);
1477                 BIO_free(fbio);
1478                 if (!foundit)
1479                         BIO_printf(bio_err,
1480                                    "didn't found STARTTLS in server response,"
1481                                    " try anyway...\n");
1482                 BIO_printf(sbio,". STARTTLS\r\n");
1483                 BIO_read(sbio,sbuf,BUFSIZZ);
1484                 }
1485         else if (starttls_proto == PROTO_FTP)
1486                 {
1487                 BIO *fbio = BIO_new(BIO_f_buffer());
1488                 BIO_push(fbio, sbio);
1489                 /* wait for multi-line response to end from FTP */
1490                 do
1491                         {
1492                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1493                         }
1494                 while (mbuf_len>3 && mbuf[3]=='-');
1495                 (void)BIO_flush(fbio);
1496                 BIO_pop(fbio);
1497                 BIO_free(fbio);
1498                 BIO_printf(sbio,"AUTH TLS\r\n");
1499                 BIO_read(sbio,sbuf,BUFSIZZ);
1500                 }
1501         if (starttls_proto == PROTO_XMPP)
1502                 {
1503                 int seen = 0;
1504                 BIO_printf(sbio,"<stream:stream "
1505                     "xmlns:stream='http://etherx.jabber.org/streams' "
1506                     "xmlns='jabber:client' to='%s' version='1.0'>", host);
1507                 seen = BIO_read(sbio,mbuf,BUFSIZZ);
1508                 mbuf[seen] = 0;
1509                 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
1510                         {
1511                         if (strstr(mbuf, "/stream:features>"))
1512                                 goto shut;
1513                         seen = BIO_read(sbio,mbuf,BUFSIZZ);
1514                         mbuf[seen] = 0;
1515                         }
1516                 BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1517                 seen = BIO_read(sbio,sbuf,BUFSIZZ);
1518                 sbuf[seen] = 0;
1519                 if (!strstr(sbuf, "<proceed"))
1520                         goto shut;
1521                 mbuf[0] = 0;
1522                 }
1523
1524         for (;;)
1525                 {
1526                 FD_ZERO(&readfds);
1527                 FD_ZERO(&writefds);
1528
1529                 if ((SSL_version(con) == DTLS1_VERSION) &&
1530                         DTLSv1_get_timeout(con, &timeout))
1531                         timeoutp = &timeout;
1532                 else
1533                         timeoutp = NULL;
1534
1535                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1536                         {
1537                         in_init=1;
1538                         tty_on=0;
1539                         }
1540                 else
1541                         {
1542                         tty_on=1;
1543                         if (in_init)
1544                                 {
1545                                 in_init=0;
1546 #if 0 /* This test doesn't really work as intended (needs to be fixed) */
1547 #ifndef OPENSSL_NO_TLSEXT
1548                                 if (servername != NULL && !SSL_session_reused(con))
1549                                         {
1550                                         BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
1551                                         }
1552 #endif
1553 #endif
1554                                 if (sess_out)
1555                                         {
1556                                         BIO *stmp = BIO_new_file(sess_out, "w");
1557                                         if (stmp)
1558                                                 {
1559                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1560                                                 BIO_free(stmp);
1561                                                 }
1562                                         else
1563                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1564                                         }
1565                                 print_stuff(bio_c_out,con,full_log);
1566                                 if (full_log > 0) full_log--;
1567
1568                                 if (starttls_proto)
1569                                         {
1570                                         BIO_printf(bio_err,"%s",mbuf);
1571                                         /* We don't need to know any more */
1572                                         starttls_proto = PROTO_OFF;
1573                                         }
1574
1575                                 if (reconnect)
1576                                         {
1577                                         reconnect--;
1578                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1579                                         SSL_shutdown(con);
1580                                         SSL_set_connect_state(con);
1581                                         SHUTDOWN(SSL_get_fd(con));
1582                                         goto re_start;
1583                                         }
1584                                 }
1585                         }
1586
1587                 ssl_pending = read_ssl && SSL_pending(con);
1588
1589                 if (!ssl_pending)
1590                         {
1591 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
1592                         if (tty_on)
1593                                 {
1594                                 if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
1595                                 if (write_tty) openssl_fdset(fileno(stdout),&writefds);
1596                                 }
1597                         if (read_ssl)
1598                                 openssl_fdset(SSL_get_fd(con),&readfds);
1599                         if (write_ssl)
1600                                 openssl_fdset(SSL_get_fd(con),&writefds);
1601 #else
1602                         if(!tty_on || !write_tty) {
1603                                 if (read_ssl)
1604                                         openssl_fdset(SSL_get_fd(con),&readfds);
1605                                 if (write_ssl)
1606                                         openssl_fdset(SSL_get_fd(con),&writefds);
1607                         }
1608 #endif
1609 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1610                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1611
1612                         /* Note: under VMS with SOCKETSHR the second parameter
1613                          * is currently of type (int *) whereas under other
1614                          * systems it is (void *) if you don't have a cast it
1615                          * will choke the compiler: if you do have a cast then
1616                          * you can either go for (int *) or (void *).
1617                          */
1618 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1619                         /* Under Windows/DOS we make the assumption that we can
1620                          * always write to the tty: therefore if we need to
1621                          * write to the tty we just fall through. Otherwise
1622                          * we timeout the select every second and see if there
1623                          * are any keypresses. Note: this is a hack, in a proper
1624                          * Windows application we wouldn't do this.
1625                          */
1626                         i=0;
1627                         if(!write_tty) {
1628                                 if(read_tty) {
1629                                         tv.tv_sec = 1;
1630                                         tv.tv_usec = 0;
1631                                         i=select(width,(void *)&readfds,(void *)&writefds,
1632                                                  NULL,&tv);
1633 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1634                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1635 #else
1636                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1637 #endif
1638                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1639                                          NULL,timeoutp);
1640                         }
1641 #elif defined(OPENSSL_SYS_NETWARE)
1642                         if(!write_tty) {
1643                                 if(read_tty) {
1644                                         tv.tv_sec = 1;
1645                                         tv.tv_usec = 0;
1646                                         i=select(width,(void *)&readfds,(void *)&writefds,
1647                                                 NULL,&tv);
1648                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1649                                         NULL,timeoutp);
1650                         }
1651 #elif defined(OPENSSL_SYS_BEOS_R5)
1652                         /* Under BeOS-R5 the situation is similar to DOS */
1653                         i=0;
1654                         stdin_set = 0;
1655                         (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
1656                         if(!write_tty) {
1657                                 if(read_tty) {
1658                                         tv.tv_sec = 1;
1659                                         tv.tv_usec = 0;
1660                                         i=select(width,(void *)&readfds,(void *)&writefds,
1661                                                  NULL,&tv);
1662                                         if (read(fileno(stdin), sbuf, 0) >= 0)
1663                                                 stdin_set = 1;
1664                                         if (!i && (stdin_set != 1 || !read_tty))
1665                                                 continue;
1666                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1667                                          NULL,timeoutp);
1668                         }
1669                         (void)fcntl(fileno(stdin), F_SETFL, 0);
1670 #else
1671                         i=select(width,(void *)&readfds,(void *)&writefds,
1672                                  NULL,timeoutp);
1673 #endif
1674                         if ( i < 0)
1675                                 {
1676                                 BIO_printf(bio_err,"bad select %d\n",
1677                                 get_last_socket_error());
1678                                 goto shut;
1679                                 /* goto end; */
1680                                 }
1681                         }
1682
1683                 if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
1684                         {
1685                         BIO_printf(bio_err,"TIMEOUT occured\n");
1686                         }
1687
1688                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1689                         {
1690                         k=SSL_write(con,&(cbuf[cbuf_off]),
1691                                 (unsigned int)cbuf_len);
1692                         switch (SSL_get_error(con,k))
1693                                 {
1694                         case SSL_ERROR_NONE:
1695                                 cbuf_off+=k;
1696                                 cbuf_len-=k;
1697                                 if (k <= 0) goto end;
1698                                 /* we have done a  write(con,NULL,0); */
1699                                 if (cbuf_len <= 0)
1700                                         {
1701                                         read_tty=1;
1702                                         write_ssl=0;
1703                                         }
1704                                 else /* if (cbuf_len > 0) */
1705                                         {
1706                                         read_tty=0;
1707                                         write_ssl=1;
1708                                         }
1709                                 break;
1710                         case SSL_ERROR_WANT_WRITE:
1711                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1712                                 write_ssl=1;
1713                                 read_tty=0;
1714                                 break;
1715                         case SSL_ERROR_WANT_READ:
1716                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1717                                 write_tty=0;
1718                                 read_ssl=1;
1719                                 write_ssl=0;
1720                                 break;
1721                         case SSL_ERROR_WANT_X509_LOOKUP:
1722                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1723                                 break;
1724                         case SSL_ERROR_ZERO_RETURN:
1725                                 if (cbuf_len != 0)
1726                                         {
1727                                         BIO_printf(bio_c_out,"shutdown\n");
1728                                         ret = 0;
1729                                         goto shut;
1730                                         }
1731                                 else
1732                                         {
1733                                         read_tty=1;
1734                                         write_ssl=0;
1735                                         break;
1736                                         }
1737
1738                         case SSL_ERROR_SYSCALL:
1739                                 if ((k != 0) || (cbuf_len != 0))
1740                                         {
1741                                         BIO_printf(bio_err,"write:errno=%d\n",
1742                                                 get_last_socket_error());
1743                                         goto shut;
1744                                         }
1745                                 else
1746                                         {
1747                                         read_tty=1;
1748                                         write_ssl=0;
1749                                         }
1750                                 break;
1751                         case SSL_ERROR_SSL:
1752                                 ERR_print_errors(bio_err);
1753                                 goto shut;
1754                                 }
1755                         }
1756 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
1757                 /* Assume Windows/DOS/BeOS can always write */
1758                 else if (!ssl_pending && write_tty)
1759 #else
1760                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1761 #endif
1762                         {
1763 #ifdef CHARSET_EBCDIC
1764                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1765 #endif
1766                         i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
1767
1768                         if (i <= 0)
1769                                 {
1770                                 BIO_printf(bio_c_out,"DONE\n");
1771                                 ret = 0;
1772                                 goto shut;
1773                                 /* goto end; */
1774                                 }
1775
1776                         sbuf_len-=i;;
1777                         sbuf_off+=i;
1778                         if (sbuf_len <= 0)
1779                                 {
1780                                 read_ssl=1;
1781                                 write_tty=0;
1782                                 }
1783                         }
1784                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1785                         {
1786 #ifdef RENEG
1787 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1788 #endif
1789 #if 1
1790                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1791 #else
1792 /* Demo for pending and peek :-) */
1793                         k=SSL_read(con,sbuf,16);
1794 { char zbuf[10240];
1795 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1796 }
1797 #endif
1798
1799                         switch (SSL_get_error(con,k))
1800                                 {
1801                         case SSL_ERROR_NONE:
1802                                 if (k <= 0)
1803                                         goto end;
1804                                 sbuf_off=0;
1805                                 sbuf_len=k;
1806
1807                                 read_ssl=0;
1808                                 write_tty=1;
1809                                 break;
1810                         case SSL_ERROR_WANT_WRITE:
1811                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1812                                 write_ssl=1;
1813                                 read_tty=0;
1814                                 break;
1815                         case SSL_ERROR_WANT_READ:
1816                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1817                                 write_tty=0;
1818                                 read_ssl=1;
1819                                 if ((read_tty == 0) && (write_ssl == 0))
1820                                         write_ssl=1;
1821                                 break;
1822                         case SSL_ERROR_WANT_X509_LOOKUP:
1823                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1824                                 break;
1825                         case SSL_ERROR_SYSCALL:
1826                                 ret=get_last_socket_error();
1827                                 BIO_printf(bio_err,"read:errno=%d\n",ret);
1828                                 goto shut;
1829                         case SSL_ERROR_ZERO_RETURN:
1830                                 BIO_printf(bio_c_out,"closed\n");
1831                                 ret=0;
1832                                 goto shut;
1833                         case SSL_ERROR_SSL:
1834                                 ERR_print_errors(bio_err);
1835                                 goto shut;
1836                                 /* break; */
1837                                 }
1838                         }
1839
1840 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1841 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1842                 else if (_kbhit())
1843 #else
1844                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1845 #endif
1846 #elif defined (OPENSSL_SYS_NETWARE)
1847                 else if (_kbhit())
1848 #elif defined(OPENSSL_SYS_BEOS_R5)
1849                 else if (stdin_set)
1850 #else
1851                 else if (FD_ISSET(fileno(stdin),&readfds))
1852 #endif
1853                         {
1854                         if (crlf)
1855                                 {
1856                                 int j, lf_num;
1857
1858                                 i=raw_read_stdin(cbuf,BUFSIZZ/2);
1859                                 lf_num = 0;
1860                                 /* both loops are skipped when i <= 0 */
1861                                 for (j = 0; j < i; j++)
1862                                         if (cbuf[j] == '\n')
1863                                                 lf_num++;
1864                                 for (j = i-1; j >= 0; j--)
1865                                         {
1866                                         cbuf[j+lf_num] = cbuf[j];
1867                                         if (cbuf[j] == '\n')
1868                                                 {
1869                                                 lf_num--;
1870                                                 i++;
1871                                                 cbuf[j+lf_num] = '\r';
1872                                                 }
1873                                         }
1874                                 assert(lf_num == 0);
1875                                 }
1876                         else
1877                                 i=raw_read_stdin(cbuf,BUFSIZZ);
1878
1879                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1880                                 {
1881                                 BIO_printf(bio_err,"DONE\n");
1882                                 ret=0;
1883                                 goto shut;
1884                                 }
1885
1886                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1887                                 {
1888                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1889                                 SSL_renegotiate(con);
1890                                 cbuf_len=0;
1891                                 }
1892 #ifndef OPENSSL_NO_HEARTBEATS
1893                         else if ((!c_ign_eof) && (cbuf[0] == 'B'))
1894                                 {
1895                                 BIO_printf(bio_err,"HEARTBEATING\n");
1896                                 SSL_heartbeat(con);
1897                                 cbuf_len=0;
1898                                 }
1899 #endif
1900                         else
1901                                 {
1902                                 cbuf_len=i;
1903                                 cbuf_off=0;
1904 #ifdef CHARSET_EBCDIC
1905                                 ebcdic2ascii(cbuf, cbuf, i);
1906 #endif
1907                                 }
1908
1909                         write_ssl=1;
1910                         read_tty=0;
1911                         }
1912                 }
1913
1914         ret=0;
1915 shut:
1916         if (in_init)
1917                 print_stuff(bio_c_out,con,full_log);
1918         SSL_shutdown(con);
1919         SHUTDOWN(SSL_get_fd(con));
1920 end:
1921         if (con != NULL)
1922                 {
1923                 if (prexit != 0)
1924                         print_stuff(bio_c_out,con,1);
1925                 SSL_free(con);
1926                 }
1927 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1928         if (next_proto.data)
1929                 OPENSSL_free(next_proto.data);
1930 #endif
1931         if (ctx != NULL) SSL_CTX_free(ctx);
1932         if (cert)
1933                 X509_free(cert);
1934         if (key)
1935                 EVP_PKEY_free(key);
1936         if (pass)
1937                 OPENSSL_free(pass);
1938         if (vpm)
1939                 X509_VERIFY_PARAM_free(vpm);
1940         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1941         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1942         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1943         if (bio_c_out != NULL)
1944                 {
1945                 BIO_free(bio_c_out);
1946                 bio_c_out=NULL;
1947                 }
1948         apps_shutdown();
1949         OPENSSL_EXIT(ret);
1950         }
1951
1952
1953 static void print_stuff(BIO *bio, SSL *s, int full)
1954         {
1955         X509 *peer=NULL;
1956         char *p;
1957         static const char *space="                ";
1958         char buf[BUFSIZ];
1959         STACK_OF(X509) *sk;
1960         STACK_OF(X509_NAME) *sk2;
1961         const SSL_CIPHER *c;
1962         X509_NAME *xn;
1963         int j,i;
1964 #ifndef OPENSSL_NO_COMP
1965         const COMP_METHOD *comp, *expansion;
1966 #endif
1967         unsigned char *exportedkeymat;
1968
1969         if (full)
1970                 {
1971                 int got_a_chain = 0;
1972
1973                 sk=SSL_get_peer_cert_chain(s);
1974                 if (sk != NULL)
1975                         {
1976                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1977
1978                         BIO_printf(bio,"---\nCertificate chain\n");
1979                         for (i=0; i<sk_X509_num(sk); i++)
1980                                 {
1981                                 X509_NAME_oneline(X509_get_subject_name(
1982                                         sk_X509_value(sk,i)),buf,sizeof buf);
1983                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1984                                 X509_NAME_oneline(X509_get_issuer_name(
1985                                         sk_X509_value(sk,i)),buf,sizeof buf);
1986                                 BIO_printf(bio,"   i:%s\n",buf);
1987                                 if (c_showcerts)
1988                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1989                                 }
1990                         }
1991
1992                 BIO_printf(bio,"---\n");
1993                 peer=SSL_get_peer_certificate(s);
1994                 if (peer != NULL)
1995                         {
1996                         BIO_printf(bio,"Server certificate\n");
1997                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1998                                 PEM_write_bio_X509(bio,peer);
1999                         X509_NAME_oneline(X509_get_subject_name(peer),
2000                                 buf,sizeof buf);
2001                         BIO_printf(bio,"subject=%s\n",buf);
2002                         X509_NAME_oneline(X509_get_issuer_name(peer),
2003                                 buf,sizeof buf);
2004                         BIO_printf(bio,"issuer=%s\n",buf);
2005                         }
2006                 else
2007                         BIO_printf(bio,"no peer certificate available\n");
2008
2009                 sk2=SSL_get_client_CA_list(s);
2010                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
2011                         {
2012                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
2013                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
2014                                 {
2015                                 xn=sk_X509_NAME_value(sk2,i);
2016                                 X509_NAME_oneline(xn,buf,sizeof(buf));
2017                                 BIO_write(bio,buf,strlen(buf));
2018                                 BIO_write(bio,"\n",1);
2019                                 }
2020                         }
2021                 else
2022                         {
2023                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
2024                         }
2025                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
2026                 if (p != NULL)
2027                         {
2028                         /* This works only for SSL 2.  In later protocol
2029                          * versions, the client does not know what other
2030                          * ciphers (in addition to the one to be used
2031                          * in the current connection) the server supports. */
2032
2033                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
2034                         j=i=0;
2035                         while (*p)
2036                                 {
2037                                 if (*p == ':')
2038                                         {
2039                                         BIO_write(bio,space,15-j%25);
2040                                         i++;
2041                                         j=0;
2042                                         BIO_write(bio,((i%3)?" ":"\n"),1);
2043                                         }
2044                                 else
2045                                         {
2046                                         BIO_write(bio,p,1);
2047                                         j++;
2048                                         }
2049                                 p++;
2050                                 }
2051                         BIO_write(bio,"\n",1);
2052                         }
2053
2054                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
2055                         BIO_number_read(SSL_get_rbio(s)),
2056                         BIO_number_written(SSL_get_wbio(s)));
2057                 }
2058         BIO_printf(bio,(SSL_cache_hit(s)?"---\nReused, ":"---\nNew, "));
2059         c=SSL_get_current_cipher(s);
2060         BIO_printf(bio,"%s, Cipher is %s\n",
2061                 SSL_CIPHER_get_version(c),
2062                 SSL_CIPHER_get_name(c));
2063         if (peer != NULL) {
2064                 EVP_PKEY *pktmp;
2065                 pktmp = X509_get_pubkey(peer);
2066                 BIO_printf(bio,"Server public key is %d bit\n",
2067                                                          EVP_PKEY_bits(pktmp));
2068                 EVP_PKEY_free(pktmp);
2069         }
2070         BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
2071                         SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
2072 #ifndef OPENSSL_NO_COMP
2073         comp=SSL_get_current_compression(s);
2074         expansion=SSL_get_current_expansion(s);
2075         BIO_printf(bio,"Compression: %s\n",
2076                 comp ? SSL_COMP_get_name(comp) : "NONE");
2077         BIO_printf(bio,"Expansion: %s\n",
2078                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
2079 #endif
2080
2081 #ifdef SSL_DEBUG
2082         {
2083         /* Print out local port of connection: useful for debugging */
2084         int sock;
2085         struct sockaddr_in ladd;
2086         socklen_t ladd_size = sizeof(ladd);
2087         sock = SSL_get_fd(s);
2088         getsockname(sock, (struct sockaddr *)&ladd, &ladd_size);
2089         BIO_printf(bio_c_out, "LOCAL PORT is %u\n", ntohs(ladd.sin_port));
2090         }
2091 #endif
2092
2093 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2094         if (next_proto.status != -1) {
2095                 const unsigned char *proto;
2096                 unsigned int proto_len;
2097                 SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
2098                 BIO_printf(bio, "Next protocol: (%d) ", next_proto.status);
2099                 BIO_write(bio, proto, proto_len);
2100                 BIO_write(bio, "\n", 1);
2101         }
2102 #endif
2103
2104 #ifndef OPENSSL_NO_SRTP
2105         {
2106         SRTP_PROTECTION_PROFILE *srtp_profile=SSL_get_selected_srtp_profile(s);
2107
2108         if(srtp_profile)
2109                 BIO_printf(bio,"SRTP Extension negotiated, profile=%s\n",
2110                            srtp_profile->name);
2111         }
2112 #endif
2113
2114         SSL_SESSION_print(bio,SSL_get_session(s));
2115         if (keymatexportlabel != NULL)
2116                 {
2117                 BIO_printf(bio, "Keying material exporter:\n");
2118                 BIO_printf(bio, "    Label: '%s'\n", keymatexportlabel);
2119                 BIO_printf(bio, "    Length: %i bytes\n", keymatexportlen);
2120                 exportedkeymat = OPENSSL_malloc(keymatexportlen);
2121                 if (exportedkeymat != NULL)
2122                         {
2123                         if (!SSL_export_keying_material(s, exportedkeymat,
2124                                                         keymatexportlen,
2125                                                         keymatexportlabel,
2126                                                         strlen(keymatexportlabel),
2127                                                         NULL, 0, 0))
2128                                 {
2129                                 BIO_printf(bio, "    Error\n");
2130                                 }
2131                         else
2132                                 {
2133                                 BIO_printf(bio, "    Keying material: ");
2134                                 for (i=0; i<keymatexportlen; i++)
2135                                         BIO_printf(bio, "%02X",
2136                                                    exportedkeymat[i]);
2137                                 BIO_printf(bio, "\n");
2138                                 }
2139                         OPENSSL_free(exportedkeymat);
2140                         }
2141                 }
2142         BIO_printf(bio,"---\n");
2143         if (peer != NULL)
2144                 X509_free(peer);
2145         /* flush, or debugging output gets mixed with http response */
2146         (void)BIO_flush(bio);
2147         }
2148
2149 #ifndef OPENSSL_NO_TLSEXT
2150
2151 static int ocsp_resp_cb(SSL *s, void *arg)
2152         {
2153         const unsigned char *p;
2154         int len;
2155         OCSP_RESPONSE *rsp;
2156         len = SSL_get_tlsext_status_ocsp_resp(s, &p);
2157         BIO_puts(arg, "OCSP response: ");
2158         if (!p)
2159                 {
2160                 BIO_puts(arg, "no response sent\n");
2161                 return 1;
2162                 }
2163         rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
2164         if (!rsp)
2165                 {
2166                 BIO_puts(arg, "response parse error\n");
2167                 BIO_dump_indent(arg, (char *)p, len, 4);
2168                 return 0;
2169                 }
2170         BIO_puts(arg, "\n======================================\n");
2171         OCSP_RESPONSE_print(arg, rsp, 0);
2172         BIO_puts(arg, "======================================\n");
2173         OCSP_RESPONSE_free(rsp);
2174         return 1;
2175         }
2176
2177 #endif