crypto/openssl/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," -cert arg     - certificate file to use, PEM format assumed\n");
 294         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
 295         BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
 296         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 297         BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
 298         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
 299         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 300         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 301         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 302         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 303         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 304         BIO_printf(bio_err," -debug        - extra output\n");
 305 #ifdef WATT32
 306         BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
 307 #endif
 308         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 309         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 310         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 311 #ifdef FIONBIO
 312         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 313 #endif
 314         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 315         BIO_printf(bio_err," -quiet        - no s_client output\n");
 316         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 317         BIO_printf(bio_err," -no_ign_eof   - don't ignore input eof\n");
 318 #ifndef OPENSSL_NO_PSK
 319         BIO_printf(bio_err," -psk_identity arg - PSK identity\n");
 320         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
 321 # ifndef OPENSSL_NO_JPAKE
 322         BIO_printf(bio_err," -jpake arg    - JPAKE secret to use\n");
 323 # endif
 324 #endif
 325 #ifndef OPENSSL_NO_SRP
 326         BIO_printf(bio_err," -srpuser user     - SRP authentification for 'user'\n");
 327         BIO_printf(bio_err," -srppass arg      - password for 'user'\n");
 328         BIO_printf(bio_err," -srp_lateuser     - SRP username into second ClientHello message\n");
 329         BIO_printf(bio_err," -srp_moregroups   - Tolerate other than the known g N values.\n");
 330         BIO_printf(bio_err," -srp_strength int - minimal mength in bits for N (default %d).\n",SRP_MINIMAL_N);
 331 #endif
 332         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 333         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 334         BIO_printf(bio_err," -tls1_2       - just use TLSv1.2\n");
 335         BIO_printf(bio_err," -tls1_1       - just use TLSv1.1\n");
 336         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 337         BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");
 338         BIO_printf(bio_err," -mtu          - set the link layer MTU\n");
 339         BIO_printf(bio_err," -no_tls1_2/-no_tls1_1/-no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 340         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 341         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 342         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 343         BIO_printf(bio_err,"                 command to see what is available\n");
 344         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
 345         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
 346         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
 347         BIO_printf(bio_err,"                 only \"smtp\", \"pop3\", \"imap\", \"ftp\" and \"xmpp\"\n");
 348         BIO_printf(bio_err,"                 are supported.\n");
 349 #ifndef OPENSSL_NO_ENGINE
 350         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 351 #endif
 352         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 353         BIO_printf(bio_err," -sess_out arg - file to write SSL session to\n");
 354         BIO_printf(bio_err," -sess_in arg  - file to read SSL session from\n");
 355 #ifndef OPENSSL_NO_TLSEXT
 356         BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
 357         BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
 358         BIO_printf(bio_err," -status           - request certificate status from server\n");
 359         BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
 360 # ifndef OPENSSL_NO_NEXTPROTONEG
 361         BIO_printf(bio_err," -nextprotoneg arg - enable NPN extension, considering named protocols supported (comma-separated list)\n");
 362 # endif
 363 #endif
 364         BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
 365 #ifndef OPENSSL_NO_SRTP
 366         BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
 367 #endif
 368         BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
 369         BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
 370         }
 371
 372 #ifndef OPENSSL_NO_TLSEXT
 373
 374 /* This is a context that we pass to callbacks */
 375 typedef struct tlsextctx_st {
 376    BIO * biodebug;
 377    int ack;
 378 } tlsextctx;
 379
 380
 381 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
 382         {
 383         tlsextctx * p = (tlsextctx *) arg;
 384         const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
 385         if (SSL_get_servername_type(s) != -1)
 386                 p->ack = !SSL_session_reused(s) && hn != NULL;
 387         else
 388                 BIO_printf(bio_err,"Can't use SSL_get_servername\n");
 389
 390         return SSL_TLSEXT_ERR_OK;
 391         }
 392
 393 #ifndef OPENSSL_NO_SRP
 394
 395 /* This is a context that we pass to all callbacks */
 396 typedef struct srp_arg_st
 397         {
 398         char *srppassin;
 399         char *srplogin;
 400         int msg;   /* copy from c_msg */
 401         int debug; /* copy from c_debug */
 402         int amp;   /* allow more groups */
 403         int strength /* minimal size for N */ ;
 404         } SRP_ARG;
 405
 406 #define SRP_NUMBER_ITERATIONS_FOR_PRIME 64
 407
 408 static int srp_Verify_N_and_g(BIGNUM *N, BIGNUM *g)
 409         {
 410         BN_CTX *bn_ctx = BN_CTX_new();
 411         BIGNUM *p = BN_new();
 412         BIGNUM *r = BN_new();
 413         int ret =
 414                 g != NULL && N != NULL && bn_ctx != NULL && BN_is_odd(N) &&
 415                 BN_is_prime_ex(N, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
 416                 p != NULL && BN_rshift1(p, N) &&
 417
 418                 /* p = (N-1)/2 */
 419                 BN_is_prime_ex(p, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
 420                 r != NULL &&
 421
 422                 /* verify g^((N-1)/2) == -1 (mod N) */
 423                 BN_mod_exp(r, g, p, N, bn_ctx) &&
 424                 BN_add_word(r, 1) &&
 425                 BN_cmp(r, N) == 0;
 426
 427         if(r)
 428                 BN_free(r);
 429         if(p)
 430                 BN_free(p);
 431         if(bn_ctx)
 432                 BN_CTX_free(bn_ctx);
 433         return ret;
 434         }
 435
 436 /* This callback is used here for two purposes:
 437    - extended debugging
 438    - making some primality tests for unknown groups
 439    The callback is only called for a non default group.
 440
 441    An application does not need the call back at all if
 442    only the stanard groups are used.  In real life situations,
 443    client and server already share well known groups,
 444    thus there is no need to verify them.
 445    Furthermore, in case that a server actually proposes a group that
 446    is not one of those defined in RFC 5054, it is more appropriate
 447    to add the group to a static list and then compare since
 448    primality tests are rather cpu consuming.
 449 */
 450
 451 static int MS_CALLBACK ssl_srp_verify_param_cb(SSL *s, void *arg)
 452         {
 453         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 454         BIGNUM *N = NULL, *g = NULL;
 455         if (!(N = SSL_get_srp_N(s)) || !(g = SSL_get_srp_g(s)))
 456                 return 0;
 457         if (srp_arg->debug || srp_arg->msg || srp_arg->amp == 1)
 458                 {
 459                 BIO_printf(bio_err, "SRP parameters:\n");
 460                 BIO_printf(bio_err,"\tN="); BN_print(bio_err,N);
 461                 BIO_printf(bio_err,"\n\tg="); BN_print(bio_err,g);
 462                 BIO_printf(bio_err,"\n");
 463                 }
 464
 465         if (SRP_check_known_gN_param(g,N))
 466                 return 1;
 467
 468         if (srp_arg->amp == 1)
 469                 {
 470                 if (srp_arg->debug)
 471                         BIO_printf(bio_err, "SRP param N and g are not known params, going to check deeper.\n");
 472
 473 /* The srp_moregroups is a real debugging feature.
 474    Implementors should rather add the value to the known ones.
 475    The minimal size has already been tested.
 476 */
 477                 if (BN_num_bits(g) <= BN_BITS && srp_Verify_N_and_g(N,g))
 478                         return 1;
 479                 }
 480         BIO_printf(bio_err, "SRP param N and g rejected.\n");
 481         return 0;
 482         }
 483
 484 #define PWD_STRLEN 1024
 485
 486 static char * MS_CALLBACK ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
 487         {
 488         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 489         char *pass = (char *)OPENSSL_malloc(PWD_STRLEN+1);
 490         PW_CB_DATA cb_tmp;
 491         int l;
 492
 493         cb_tmp.password = (char *)srp_arg->srppassin;
 494         cb_tmp.prompt_info = "SRP user";
 495         if ((l = password_callback(pass, PWD_STRLEN, 0, &cb_tmp))<0)
 496                 {
 497                 BIO_printf (bio_err, "Can't read Password\n");
 498                 OPENSSL_free(pass);
 499                 return NULL;
 500                 }
 501         *(pass+l)= '\0';
 502
 503         return pass;
 504         }
 505
 506 #endif
 507 #ifndef OPENSSL_NO_SRTP
 508         char *srtp_profiles = NULL;
 509 #endif
 510
 511 # ifndef OPENSSL_NO_NEXTPROTONEG
 512 /* This the context that we pass to next_proto_cb */
 513 typedef struct tlsextnextprotoctx_st {
 514         unsigned char *data;
 515         unsigned short len;
 516         int status;
 517 } tlsextnextprotoctx;
 518
 519 static tlsextnextprotoctx next_proto;
 520
 521 static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
 522         {
 523         tlsextnextprotoctx *ctx = arg;
 524
 525         if (!c_quiet)
 526                 {
 527                 /* We can assume that |in| is syntactically valid. */
 528                 unsigned i;
 529                 BIO_printf(bio_c_out, "Protocols advertised by server: ");
 530                 for (i = 0; i < inlen; )
 531                         {
 532                         if (i)
 533                                 BIO_write(bio_c_out, ", ", 2);
 534                         BIO_write(bio_c_out, &in[i + 1], in[i]);
 535                         i += in[i] + 1;
 536                         }
 537                 BIO_write(bio_c_out, "\n", 1);
 538                 }
 539
 540         ctx->status = SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len);
 541         return SSL_TLSEXT_ERR_OK;
 542         }
 543 # endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
 544 #endif
 545
 546 enum
 547 {
 548         PROTO_OFF       = 0,
 549         PROTO_SMTP,
 550         PROTO_POP3,
 551         PROTO_IMAP,
 552         PROTO_FTP,
 553         PROTO_XMPP
 554 };
 555
 556 int MAIN(int, char **);
 557
 558 int MAIN(int argc, char **argv)
 559         {
 560         unsigned int off=0, clr=0;
 561         SSL *con=NULL;
 562 #ifndef OPENSSL_NO_KRB5
 563         KSSL_CTX *kctx;
 564 #endif
 565         int s,k,width,state=0;
 566         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
 567         int cbuf_len,cbuf_off;
 568         int sbuf_len,sbuf_off;
 569         fd_set readfds,writefds;
 570         short port=PORT;
 571         int full_log=1;
 572         char *host=SSL_HOST_NAME;
 573         char *cert_file=NULL,*key_file=NULL;
 574         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
 575         char *passarg = NULL, *pass = NULL;
 576         X509 *cert = NULL;
 577         EVP_PKEY *key = NULL;
 578         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 579         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 580         int crlf=0;
 581         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 582         SSL_CTX *ctx=NULL;
 583         int ret=1,in_init=1,i,nbio_test=0;
 584         int starttls_proto = PROTO_OFF;
 585         int prexit = 0;
 586         X509_VERIFY_PARAM *vpm = NULL;
 587         int badarg = 0;
 588         const SSL_METHOD *meth=NULL;
 589         int socket_type=SOCK_STREAM;
 590         BIO *sbio;
 591         char *inrand=NULL;
 592         int mbuf_len=0;
 593         struct timeval timeout, *timeoutp;
 594 #ifndef OPENSSL_NO_ENGINE
 595         char *engine_id=NULL;
 596         char *ssl_client_engine_id=NULL;
 597         ENGINE *ssl_client_engine=NULL;
 598 #endif
 599         ENGINE *e=NULL;
 600 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
 601         struct timeval tv;
 602 #if defined(OPENSSL_SYS_BEOS_R5)
 603         int stdin_set = 0;
 604 #endif
 605 #endif
 606 #ifndef OPENSSL_NO_TLSEXT
 607         char *servername = NULL;
 608         tlsextctx tlsextcbp =
 609         {NULL,0};
 610 # ifndef OPENSSL_NO_NEXTPROTONEG
 611         const char *next_proto_neg_in = NULL;
 612 # endif
 613 #endif
 614         char *sess_in = NULL;
 615         char *sess_out = NULL;
 616         struct sockaddr peer;
 617         int peerlen = sizeof(peer);
 618         int enable_timeouts = 0 ;
 619         long socket_mtu = 0;
 620 #ifndef OPENSSL_NO_JPAKE
 621         char *jpake_secret = NULL;
 622 #endif
 623 #ifndef OPENSSL_NO_SRP
 624         char * srppass = NULL;
 625         int srp_lateuser = 0;
 626         SRP_ARG srp_arg = {NULL,NULL,0,0,0,1024};
 627 #endif
 628
 629         meth=SSLv23_client_method();
 630
 631         apps_startup();
 632         c_Pause=0;
 633         c_quiet=0;
 634         c_ign_eof=0;
 635         c_debug=0;
 636         c_msg=0;
 637         c_showcerts=0;
 638
 639         if (bio_err == NULL)
 640                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 641
 642         if (!load_config(bio_err, NULL))
 643                 goto end;
 644
 645         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 646                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 647                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 648                 {
 649                 BIO_printf(bio_err,"out of memory\n");
 650                 goto end;
 651                 }
 652
 653         verify_depth=0;
 654         verify_error=X509_V_OK;
 655 #ifdef FIONBIO
 656         c_nbio=0;
 657 #endif
 658
 659         argc--;
 660         argv++;
 661         while (argc >= 1)
 662                 {
 663                 if      (strcmp(*argv,"-host") == 0)
 664                         {
 665                         if (--argc < 1) goto bad;
 666                         host= *(++argv);
 667                         }
 668                 else if (strcmp(*argv,"-port") == 0)
 669                         {
 670                         if (--argc < 1) goto bad;
 671                         port=atoi(*(++argv));
 672                         if (port == 0) goto bad;
 673                         }
 674                 else if (strcmp(*argv,"-connect") == 0)
 675                         {
 676                         if (--argc < 1) goto bad;
 677                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 678                                 goto bad;
 679                         }
 680                 else if (strcmp(*argv,"-verify") == 0)
 681                         {
 682                         verify=SSL_VERIFY_PEER;
 683                         if (--argc < 1) goto bad;
 684                         verify_depth=atoi(*(++argv));
 685                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 686                         }
 687                 else if (strcmp(*argv,"-cert") == 0)
 688                         {
 689                         if (--argc < 1) goto bad;
 690                         cert_file= *(++argv);
 691                         }
 692                 else if (strcmp(*argv,"-sess_out") == 0)
 693                         {
 694                         if (--argc < 1) goto bad;
 695                         sess_out = *(++argv);
 696                         }
 697                 else if (strcmp(*argv,"-sess_in") == 0)
 698                         {
 699                         if (--argc < 1) goto bad;
 700                         sess_in = *(++argv);
 701                         }
 702                 else if (strcmp(*argv,"-certform") == 0)
 703                         {
 704                         if (--argc < 1) goto bad;
 705                         cert_format = str2fmt(*(++argv));
 706                         }
 707                 else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm))
 708                         {
 709                         if (badarg)
 710                                 goto bad;
 711                         continue;
 712                         }
 713                 else if (strcmp(*argv,"-verify_return_error") == 0)
 714                         verify_return_error = 1;
 715                 else if (strcmp(*argv,"-prexit") == 0)
 716                         prexit=1;
 717                 else if (strcmp(*argv,"-crlf") == 0)
 718                         crlf=1;
 719                 else if (strcmp(*argv,"-quiet") == 0)
 720                         {
 721                         c_quiet=1;
 722                         c_ign_eof=1;
 723                         }
 724                 else if (strcmp(*argv,"-ign_eof") == 0)
 725                         c_ign_eof=1;
 726                 else if (strcmp(*argv,"-no_ign_eof") == 0)
 727                         c_ign_eof=0;
 728                 else if (strcmp(*argv,"-pause") == 0)
 729                         c_Pause=1;
 730                 else if (strcmp(*argv,"-debug") == 0)
 731                         c_debug=1;
 732 #ifndef OPENSSL_NO_TLSEXT
 733                 else if (strcmp(*argv,"-tlsextdebug") == 0)
 734                         c_tlsextdebug=1;
 735                 else if (strcmp(*argv,"-status") == 0)
 736                         c_status_req=1;
 737 #endif
 738 #ifdef WATT32
 739                 else if (strcmp(*argv,"-wdebug") == 0)
 740                         dbug_init();
 741 #endif
 742                 else if (strcmp(*argv,"-msg") == 0)
 743                         c_msg=1;
 744                 else if (strcmp(*argv,"-showcerts") == 0)
 745                         c_showcerts=1;
 746                 else if (strcmp(*argv,"-nbio_test") == 0)
 747                         nbio_test=1;
 748                 else if (strcmp(*argv,"-state") == 0)
 749                         state=1;
 750 #ifndef OPENSSL_NO_PSK
 751                 else if (strcmp(*argv,"-psk_identity") == 0)
 752                         {
 753                         if (--argc < 1) goto bad;
 754                         psk_identity=*(++argv);
 755                         }
 756                 else if (strcmp(*argv,"-psk") == 0)
 757                         {
 758                         size_t j;
 759
 760                         if (--argc < 1) goto bad;
 761                         psk_key=*(++argv);
 762                         for (j = 0; j < strlen(psk_key); j++)
 763                                 {
 764                                 if (isxdigit((unsigned char)psk_key[j]))
 765                                         continue;
 766                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
 767                                 goto bad;
 768                                 }
 769                         }
 770 #endif
 771 #ifndef OPENSSL_NO_SRP
 772                 else if (strcmp(*argv,"-srpuser") == 0)
 773                         {
 774                         if (--argc < 1) goto bad;
 775                         srp_arg.srplogin= *(++argv);
 776                         meth=TLSv1_client_method();
 777                         }
 778                 else if (strcmp(*argv,"-srppass") == 0)
 779                         {
 780                         if (--argc < 1) goto bad;
 781                         srppass= *(++argv);
 782                         meth=TLSv1_client_method();
 783                         }
 784                 else if (strcmp(*argv,"-srp_strength") == 0)
 785                         {
 786                         if (--argc < 1) goto bad;
 787                         srp_arg.strength=atoi(*(++argv));
 788                         BIO_printf(bio_err,"SRP minimal length for N is %d\n",srp_arg.strength);
 789                         meth=TLSv1_client_method();
 790                         }
 791                 else if (strcmp(*argv,"-srp_lateuser") == 0)
 792                         {
 793                         srp_lateuser= 1;
 794                         meth=TLSv1_client_method();
 795                         }
 796                 else if (strcmp(*argv,"-srp_moregroups") == 0)
 797                         {
 798                         srp_arg.amp=1;
 799                         meth=TLSv1_client_method();
 800                         }
 801 #endif
 802 #ifndef OPENSSL_NO_SSL2
 803                 else if (strcmp(*argv,"-ssl2") == 0)
 804                         meth=SSLv2_client_method();
 805 #endif
 806 #ifndef OPENSSL_NO_SSL3
 807                 else if (strcmp(*argv,"-ssl3") == 0)
 808                         meth=SSLv3_client_method();
 809 #endif
 810 #ifndef OPENSSL_NO_TLS1
 811                 else if (strcmp(*argv,"-tls1_2") == 0)
 812                         meth=TLSv1_2_client_method();
 813                 else if (strcmp(*argv,"-tls1_1") == 0)
 814                         meth=TLSv1_1_client_method();
 815                 else if (strcmp(*argv,"-tls1") == 0)
 816                         meth=TLSv1_client_method();
 817 #endif
 818 #ifndef OPENSSL_NO_DTLS1
 819                 else if (strcmp(*argv,"-dtls1") == 0)
 820                         {
 821                         meth=DTLSv1_client_method();
 822                         socket_type=SOCK_DGRAM;
 823                         }
 824                 else if (strcmp(*argv,"-timeout") == 0)
 825                         enable_timeouts=1;
 826                 else if (strcmp(*argv,"-mtu") == 0)
 827                         {
 828                         if (--argc < 1) goto bad;
 829                         socket_mtu = atol(*(++argv));
 830                         }
 831 #endif
 832                 else if (strcmp(*argv,"-bugs") == 0)
 833                         bugs=1;
 834                 else if (strcmp(*argv,"-keyform") == 0)
 835                         {
 836                         if (--argc < 1) goto bad;
 837                         key_format = str2fmt(*(++argv));
 838                         }
 839                 else if (strcmp(*argv,"-pass") == 0)
 840                         {
 841                         if (--argc < 1) goto bad;
 842                         passarg = *(++argv);
 843                         }
 844                 else if (strcmp(*argv,"-key") == 0)
 845                         {
 846                         if (--argc < 1) goto bad;
 847                         key_file= *(++argv);
 848                         }
 849                 else if (strcmp(*argv,"-reconnect") == 0)
 850                         {
 851                         reconnect=5;
 852                         }
 853                 else if (strcmp(*argv,"-CApath") == 0)
 854                         {
 855                         if (--argc < 1) goto bad;
 856                         CApath= *(++argv);
 857                         }
 858                 else if (strcmp(*argv,"-CAfile") == 0)
 859                         {
 860                         if (--argc < 1) goto bad;
 861                         CAfile= *(++argv);
 862                         }
 863                 else if (strcmp(*argv,"-no_tls1_2") == 0)
 864                         off|=SSL_OP_NO_TLSv1_2;
 865                 else if (strcmp(*argv,"-no_tls1_1") == 0)
 866                         off|=SSL_OP_NO_TLSv1_1;
 867                 else if (strcmp(*argv,"-no_tls1") == 0)
 868                         off|=SSL_OP_NO_TLSv1;
 869                 else if (strcmp(*argv,"-no_ssl3") == 0)
 870                         off|=SSL_OP_NO_SSLv3;
 871                 else if (strcmp(*argv,"-no_ssl2") == 0)
 872                         off|=SSL_OP_NO_SSLv2;
 873                 else if (strcmp(*argv,"-no_comp") == 0)
 874                         { off|=SSL_OP_NO_COMPRESSION; }
 875 #ifndef OPENSSL_NO_TLSEXT
 876                 else if (strcmp(*argv,"-no_ticket") == 0)
 877                         { off|=SSL_OP_NO_TICKET; }
 878 # ifndef OPENSSL_NO_NEXTPROTONEG
 879                 else if (strcmp(*argv,"-nextprotoneg") == 0)
 880                         {
 881                         if (--argc < 1) goto bad;
 882                         next_proto_neg_in = *(++argv);
 883                         }
 884 # endif
 885 #endif
 886                 else if (strcmp(*argv,"-serverpref") == 0)
 887                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 888                 else if (strcmp(*argv,"-legacy_renegotiation") == 0)
 889                         off|=SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
 890                 else if (strcmp(*argv,"-legacy_server_connect") == 0)
 891                         { off|=SSL_OP_LEGACY_SERVER_CONNECT; }
 892                 else if (strcmp(*argv,"-no_legacy_server_connect") == 0)
 893                         { clr|=SSL_OP_LEGACY_SERVER_CONNECT; }
 894                 else if (strcmp(*argv,"-cipher") == 0)
 895                         {
 896                         if (--argc < 1) goto bad;
 897                         cipher= *(++argv);
 898                         }
 899 #ifdef FIONBIO
 900                 else if (strcmp(*argv,"-nbio") == 0)
 901                         { c_nbio=1; }
 902 #endif
 903                 else if (strcmp(*argv,"-starttls") == 0)
 904                         {
 905                         if (--argc < 1) goto bad;
 906                         ++argv;
 907                         if (strcmp(*argv,"smtp") == 0)
 908                                 starttls_proto = PROTO_SMTP;
 909                         else if (strcmp(*argv,"pop3") == 0)
 910                                 starttls_proto = PROTO_POP3;
 911                         else if (strcmp(*argv,"imap") == 0)
 912                                 starttls_proto = PROTO_IMAP;
 913                         else if (strcmp(*argv,"ftp") == 0)
 914                                 starttls_proto = PROTO_FTP;
 915                         else if (strcmp(*argv, "xmpp") == 0)
 916                                 starttls_proto = PROTO_XMPP;
 917                         else
 918                                 goto bad;
 919                         }
 920 #ifndef OPENSSL_NO_ENGINE
 921                 else if (strcmp(*argv,"-engine") == 0)
 922                         {
 923                         if (--argc < 1) goto bad;
 924                         engine_id = *(++argv);
 925                         }
 926                 else if (strcmp(*argv,"-ssl_client_engine") == 0)
 927                         {
 928                         if (--argc < 1) goto bad;
 929                         ssl_client_engine_id = *(++argv);
 930                         }
 931 #endif
 932                 else if (strcmp(*argv,"-rand") == 0)
 933                         {
 934                         if (--argc < 1) goto bad;
 935                         inrand= *(++argv);
 936                         }
 937 #ifndef OPENSSL_NO_TLSEXT
 938                 else if (strcmp(*argv,"-servername") == 0)
 939                         {
 940                         if (--argc < 1) goto bad;
 941                         servername= *(++argv);
 942                         /* meth=TLSv1_client_method(); */
 943                         }
 944 #endif
 945 #ifndef OPENSSL_NO_JPAKE
 946                 else if (strcmp(*argv,"-jpake") == 0)
 947                         {
 948                         if (--argc < 1) goto bad;
 949                         jpake_secret = *++argv;
 950                         }
 951 #endif
 952 #ifndef OPENSSL_NO_SRTP
 953                 else if (strcmp(*argv,"-use_srtp") == 0)
 954                         {
 955                         if (--argc < 1) goto bad;
 956                         srtp_profiles = *(++argv);
 957                         }
 958 #endif
 959                 else if (strcmp(*argv,"-keymatexport") == 0)
 960                         {
 961                         if (--argc < 1) goto bad;
 962                         keymatexportlabel= *(++argv);
 963                         }
 964                 else if (strcmp(*argv,"-keymatexportlen") == 0)
 965                         {
 966                         if (--argc < 1) goto bad;
 967                         keymatexportlen=atoi(*(++argv));
 968                         if (keymatexportlen == 0) goto bad;
 969                         }
 970                 else
 971                         {
 972                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 973                         badop=1;
 974                         break;
 975                         }
 976                 argc--;
 977                 argv++;
 978                 }
 979         if (badop)
 980                 {
 981 bad:
 982                 sc_usage();
 983                 goto end;
 984                 }
 985
 986 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
 987         if (jpake_secret)
 988                 {
 989                 if (psk_key)
 990                         {
 991                         BIO_printf(bio_err,
 992                                    "Can't use JPAKE and PSK together\n");
 993                         goto end;
 994                         }
 995                 psk_identity = "JPAKE";
 996                 if (cipher)
 997                         {
 998                         BIO_printf(bio_err, "JPAKE sets cipher to PSK\n");
 999                         goto end;
1000                         }
1001                 cipher = "PSK";
1002                 }
1003 #endif
1004
1005         OpenSSL_add_ssl_algorithms();
1006         SSL_load_error_strings();
1007
1008 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1009         next_proto.status = -1;
1010         if (next_proto_neg_in)
1011                 {
1012                 next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
1013                 if (next_proto.data == NULL)
1014                         {
1015                         BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
1016                         goto end;
1017                         }
1018                 }
1019         else
1020                 next_proto.data = NULL;
1021 #endif
1022
1023 #ifndef OPENSSL_NO_ENGINE
1024         e = setup_engine(bio_err, engine_id, 1);
1025         if (ssl_client_engine_id)
1026                 {
1027                 ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
1028                 if (!ssl_client_engine)
1029                         {
1030                         BIO_printf(bio_err,
1031                                         "Error getting client auth engine\n");
1032                         goto end;
1033                         }
1034                 }
1035
1036 #endif
1037         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
1038                 {
1039                 BIO_printf(bio_err, "Error getting password\n");
1040                 goto end;
1041                 }
1042
1043         if (key_file == NULL)
1044                 key_file = cert_file;
1045
1046
1047         if (key_file)
1048
1049                 {
1050
1051                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
1052                                "client certificate private key file");
1053                 if (!key)
1054                         {
1055                         ERR_print_errors(bio_err);
1056                         goto end;
1057                         }
1058
1059                 }
1060
1061         if (cert_file)
1062
1063                 {
1064                 cert = load_cert(bio_err,cert_file,cert_format,
1065                                 NULL, e, "client certificate file");
1066
1067                 if (!cert)
1068                         {
1069                         ERR_print_errors(bio_err);
1070                         goto end;
1071                         }
1072                 }
1073
1074         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1075                 && !RAND_status())
1076                 {
1077                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1078                 }
1079         if (inrand != NULL)
1080                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1081                         app_RAND_load_files(inrand));
1082
1083         if (bio_c_out == NULL)
1084                 {
1085                 if (c_quiet && !c_debug && !c_msg)
1086                         {
1087                         bio_c_out=BIO_new(BIO_s_null());
1088                         }
1089                 else
1090                         {
1091                         if (bio_c_out == NULL)
1092                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1093                         }
1094                 }
1095
1096 #ifndef OPENSSL_NO_SRP
1097         if(!app_passwd(bio_err, srppass, NULL, &srp_arg.srppassin, NULL))
1098                 {
1099                 BIO_printf(bio_err, "Error getting password\n");
1100                 goto end;
1101                 }
1102 #endif
1103
1104         ctx=SSL_CTX_new(meth);
1105         if (ctx == NULL)
1106                 {
1107                 ERR_print_errors(bio_err);
1108                 goto end;
1109                 }
1110
1111         if (vpm)
1112                 SSL_CTX_set1_param(ctx, vpm);
1113
1114 #ifndef OPENSSL_NO_ENGINE
1115         if (ssl_client_engine)
1116                 {
1117                 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
1118                         {
1119                         BIO_puts(bio_err, "Error setting client auth engine\n");
1120                         ERR_print_errors(bio_err);
1121                         ENGINE_free(ssl_client_engine);
1122                         goto end;
1123                         }
1124                 ENGINE_free(ssl_client_engine);
1125                 }
1126 #endif
1127
1128 #ifndef OPENSSL_NO_PSK
1129 #ifdef OPENSSL_NO_JPAKE
1130         if (psk_key != NULL)
1131 #else
1132         if (psk_key != NULL || jpake_secret)
1133 #endif
1134                 {
1135                 if (c_debug)
1136                         BIO_printf(bio_c_out, "PSK key given or JPAKE in use, setting client callback\n");
1137                 SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
1138                 }
1139 #endif
1140 #ifndef OPENSSL_NO_SRTP
1141         if (srtp_profiles != NULL)
1142                 SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
1143 #endif
1144         if (bugs)
1145                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
1146         else
1147                 SSL_CTX_set_options(ctx,off);
1148
1149         if (clr)
1150                 SSL_CTX_clear_options(ctx, clr);
1151         /* DTLS: partial reads end up discarding unread UDP bytes :-(
1152          * Setting read ahead solves this problem.
1153          */
1154         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1155
1156 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1157         if (next_proto.data)
1158                 SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
1159 #endif
1160
1161         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1162         if (cipher != NULL)
1163                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
1164                 BIO_printf(bio_err,"error setting cipher list\n");
1165                 ERR_print_errors(bio_err);
1166                 goto end;
1167         }
1168 #if 0
1169         else
1170                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
1171 #endif
1172
1173         SSL_CTX_set_verify(ctx,verify,verify_callback);
1174         if (!set_cert_key_stuff(ctx,cert,key))
1175                 goto end;
1176
1177         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1178                 (!SSL_CTX_set_default_verify_paths(ctx)))
1179                 {
1180                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
1181                 ERR_print_errors(bio_err);
1182                 /* goto end; */
1183                 }
1184
1185 #ifndef OPENSSL_NO_TLSEXT
1186         if (servername != NULL)
1187                 {
1188                 tlsextcbp.biodebug = bio_err;
1189                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1190                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1191                 }
1192 #ifndef OPENSSL_NO_SRP
1193         if (srp_arg.srplogin)
1194                 {
1195                 if (!srp_lateuser && !SSL_CTX_set_srp_username(ctx, srp_arg.srplogin))
1196                         {
1197                         BIO_printf(bio_err,"Unable to set SRP username\n");
1198                         goto end;
1199                         }
1200                 srp_arg.msg = c_msg;
1201                 srp_arg.debug = c_debug ;
1202                 SSL_CTX_set_srp_cb_arg(ctx,&srp_arg);
1203                 SSL_CTX_set_srp_client_pwd_callback(ctx, ssl_give_srp_client_pwd_cb);
1204                 SSL_CTX_set_srp_strength(ctx, srp_arg.strength);
1205                 if (c_msg || c_debug || srp_arg.amp == 0)
1206                         SSL_CTX_set_srp_verify_param_callback(ctx, ssl_srp_verify_param_cb);
1207                 }
1208
1209 #endif
1210 #endif
1211
1212         con=SSL_new(ctx);
1213         if (sess_in)
1214                 {
1215                 SSL_SESSION *sess;
1216                 BIO *stmp = BIO_new_file(sess_in, "r");
1217                 if (!stmp)
1218                         {
1219                         BIO_printf(bio_err, "Can't open session file %s\n",
1220                                                 sess_in);
1221                         ERR_print_errors(bio_err);
1222                         goto end;
1223                         }
1224                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
1225                 BIO_free(stmp);
1226                 if (!sess)
1227                         {
1228                         BIO_printf(bio_err, "Can't open session file %s\n",
1229                                                 sess_in);
1230                         ERR_print_errors(bio_err);
1231                         goto end;
1232                         }
1233                 SSL_set_session(con, sess);
1234                 SSL_SESSION_free(sess);
1235                 }
1236 #ifndef OPENSSL_NO_TLSEXT
1237         if (servername != NULL)
1238                 {
1239                 if (!SSL_set_tlsext_host_name(con,servername))
1240                         {
1241                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
1242                         ERR_print_errors(bio_err);
1243                         goto end;
1244                         }
1245                 }
1246 #endif
1247 #ifndef OPENSSL_NO_KRB5
1248         if (con  &&  (kctx = kssl_ctx_new()) != NULL)
1249                 {
1250                 SSL_set0_kssl_ctx(con, kctx);
1251                 kssl_ctx_setstring(kctx, KSSL_SERVER, host);
1252                 }
1253 #endif  /* OPENSSL_NO_KRB5  */
1254 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
1255 #if 0
1256 #ifdef TLSEXT_TYPE_opaque_prf_input
1257         SSL_set_tlsext_opaque_prf_input(con, "Test client", 11);
1258 #endif
1259 #endif
1260
1261 re_start:
1262
1263         if (init_client(&s,host,port,socket_type) == 0)
1264                 {
1265                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
1266                 SHUTDOWN(s);
1267                 goto end;
1268                 }
1269         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
1270
1271 #ifdef FIONBIO
1272         if (c_nbio)
1273                 {
1274                 unsigned long l=1;
1275                 BIO_printf(bio_c_out,"turning on non blocking io\n");
1276                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
1277                         {
1278                         ERR_print_errors(bio_err);
1279                         goto end;
1280                         }
1281                 }
1282 #endif
1283         if (c_Pause & 0x01) SSL_set_debug(con, 1);
1284
1285         if ( SSL_version(con) == DTLS1_VERSION)
1286                 {
1287
1288                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1289                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
1290                         {
1291                         BIO_printf(bio_err, "getsockname:errno=%d\n",
1292                                 get_last_socket_error());
1293                         SHUTDOWN(s);
1294                         goto end;
1295                         }
1296
1297                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
1298
1299                 if (enable_timeouts)
1300                         {
1301                         timeout.tv_sec = 0;
1302                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1303                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1304
1305                         timeout.tv_sec = 0;
1306                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1307                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1308                         }
1309
1310                 if (socket_mtu > 28)
1311                         {
1312                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1313                         SSL_set_mtu(con, socket_mtu - 28);
1314                         }
1315                 else
1316                         /* want to do MTU discovery */
1317                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1318                 }
1319         else
1320                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1321
1322         if (nbio_test)
1323                 {
1324                 BIO *test;
1325
1326                 test=BIO_new(BIO_f_nbio_test());
1327                 sbio=BIO_push(test,sbio);
1328                 }
1329
1330         if (c_debug)
1331                 {
1332                 SSL_set_debug(con, 1);
1333                 BIO_set_callback(sbio,bio_dump_callback);
1334                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
1335                 }
1336         if (c_msg)
1337                 {
1338                 SSL_set_msg_callback(con, msg_cb);
1339                 SSL_set_msg_callback_arg(con, bio_c_out);
1340                 }
1341 #ifndef OPENSSL_NO_TLSEXT
1342         if (c_tlsextdebug)
1343                 {
1344                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
1345                 SSL_set_tlsext_debug_arg(con, bio_c_out);
1346                 }
1347         if (c_status_req)
1348                 {
1349                 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
1350                 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
1351                 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
1352 #if 0
1353 {
1354 STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
1355 OCSP_RESPID *id = OCSP_RESPID_new();
1356 id->value.byKey = ASN1_OCTET_STRING_new();
1357 id->type = V_OCSP_RESPID_KEY;
1358 ASN1_STRING_set(id->value.byKey, "Hello World", -1);
1359 sk_OCSP_RESPID_push(ids, id);
1360 SSL_set_tlsext_status_ids(con, ids);
1361 }
1362 #endif
1363                 }
1364 #endif
1365 #ifndef OPENSSL_NO_JPAKE
1366         if (jpake_secret)
1367                 jpake_client_auth(bio_c_out, sbio, jpake_secret);
1368 #endif
1369
1370         SSL_set_bio(con,sbio,sbio);
1371         SSL_set_connect_state(con);
1372
1373         /* ok, lets connect */
1374         width=SSL_get_fd(con)+1;
1375
1376         read_tty=1;
1377         write_tty=0;
1378         tty_on=0;
1379         read_ssl=1;
1380         write_ssl=1;
1381
1382         cbuf_len=0;
1383         cbuf_off=0;
1384         sbuf_len=0;
1385         sbuf_off=0;
1386
1387         /* This is an ugly hack that does a lot of assumptions */
1388         /* We do have to handle multi-line responses which may come
1389            in a single packet or not. We therefore have to use
1390            BIO_gets() which does need a buffering BIO. So during
1391            the initial chitchat we do push a buffering BIO into the
1392            chain that is removed again later on to not disturb the
1393            rest of the s_client operation. */
1394         if (starttls_proto == PROTO_SMTP)
1395                 {
1396                 int foundit=0;
1397                 BIO *fbio = BIO_new(BIO_f_buffer());
1398                 BIO_push(fbio, sbio);
1399                 /* wait for multi-line response to end from SMTP */
1400                 do
1401                         {
1402                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1403                         }
1404                 while (mbuf_len>3 && mbuf[3]=='-');
1405                 /* STARTTLS command requires EHLO... */
1406                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
1407                 (void)BIO_flush(fbio);
1408                 /* wait for multi-line response to end EHLO SMTP response */
1409                 do
1410                         {
1411                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1412                         if (strstr(mbuf,"STARTTLS"))
1413                                 foundit=1;
1414                         }
1415                 while (mbuf_len>3 && mbuf[3]=='-');
1416                 (void)BIO_flush(fbio);
1417                 BIO_pop(fbio);
1418                 BIO_free(fbio);
1419                 if (!foundit)
1420                         BIO_printf(bio_err,
1421                                    "didn't found starttls in server response,"
1422                                    " try anyway...\n");
1423                 BIO_printf(sbio,"STARTTLS\r\n");
1424                 BIO_read(sbio,sbuf,BUFSIZZ);
1425                 }
1426         else if (starttls_proto == PROTO_POP3)
1427                 {
1428                 BIO_read(sbio,mbuf,BUFSIZZ);
1429                 BIO_printf(sbio,"STLS\r\n");
1430                 BIO_read(sbio,sbuf,BUFSIZZ);
1431                 }
1432         else if (starttls_proto == PROTO_IMAP)
1433                 {
1434                 int foundit=0;
1435                 BIO *fbio = BIO_new(BIO_f_buffer());
1436                 BIO_push(fbio, sbio);
1437                 BIO_gets(fbio,mbuf,BUFSIZZ);
1438                 /* STARTTLS command requires CAPABILITY... */
1439                 BIO_printf(fbio,". CAPABILITY\r\n");
1440                 (void)BIO_flush(fbio);
1441                 /* wait for multi-line CAPABILITY response */
1442                 do
1443                         {
1444                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1445                         if (strstr(mbuf,"STARTTLS"))
1446                                 foundit=1;
1447                         }
1448                 while (mbuf_len>3 && mbuf[0]!='.');
1449                 (void)BIO_flush(fbio);
1450                 BIO_pop(fbio);
1451                 BIO_free(fbio);
1452                 if (!foundit)
1453                         BIO_printf(bio_err,
1454                                    "didn't found STARTTLS in server response,"
1455                                    " try anyway...\n");
1456                 BIO_printf(sbio,". STARTTLS\r\n");
1457                 BIO_read(sbio,sbuf,BUFSIZZ);
1458                 }
1459         else if (starttls_proto == PROTO_FTP)
1460                 {
1461                 BIO *fbio = BIO_new(BIO_f_buffer());
1462                 BIO_push(fbio, sbio);
1463                 /* wait for multi-line response to end from FTP */
1464                 do
1465                         {
1466                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1467                         }
1468                 while (mbuf_len>3 && mbuf[3]=='-');
1469                 (void)BIO_flush(fbio);
1470                 BIO_pop(fbio);
1471                 BIO_free(fbio);
1472                 BIO_printf(sbio,"AUTH TLS\r\n");
1473                 BIO_read(sbio,sbuf,BUFSIZZ);
1474                 }
1475         if (starttls_proto == PROTO_XMPP)
1476                 {
1477                 int seen = 0;
1478                 BIO_printf(sbio,"<stream:stream "
1479                     "xmlns:stream='http://etherx.jabber.org/streams' "
1480                     "xmlns='jabber:client' to='%s' version='1.0'>", host);
1481                 seen = BIO_read(sbio,mbuf,BUFSIZZ);
1482                 mbuf[seen] = 0;
1483                 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
1484                         {
1485                         if (strstr(mbuf, "/stream:features>"))
1486                                 goto shut;
1487                         seen = BIO_read(sbio,mbuf,BUFSIZZ);
1488                         mbuf[seen] = 0;
1489                         }
1490                 BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1491                 seen = BIO_read(sbio,sbuf,BUFSIZZ);
1492                 sbuf[seen] = 0;
1493                 if (!strstr(sbuf, "<proceed"))
1494                         goto shut;
1495                 mbuf[0] = 0;
1496                 }
1497
1498         for (;;)
1499                 {
1500                 FD_ZERO(&readfds);
1501                 FD_ZERO(&writefds);
1502
1503                 if ((SSL_version(con) == DTLS1_VERSION) &&
1504                         DTLSv1_get_timeout(con, &timeout))
1505                         timeoutp = &timeout;
1506                 else
1507                         timeoutp = NULL;
1508
1509                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1510                         {
1511                         in_init=1;
1512                         tty_on=0;
1513                         }
1514                 else
1515                         {
1516                         tty_on=1;
1517                         if (in_init)
1518                                 {
1519                                 in_init=0;
1520 #if 0 /* This test doesn't really work as intended (needs to be fixed) */
1521 #ifndef OPENSSL_NO_TLSEXT
1522                                 if (servername != NULL && !SSL_session_reused(con))
1523                                         {
1524                                         BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
1525                                         }
1526 #endif
1527 #endif
1528                                 if (sess_out)
1529                                         {
1530                                         BIO *stmp = BIO_new_file(sess_out, "w");
1531                                         if (stmp)
1532                                                 {
1533                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1534                                                 BIO_free(stmp);
1535                                                 }
1536                                         else
1537                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1538                                         }
1539                                 print_stuff(bio_c_out,con,full_log);
1540                                 if (full_log > 0) full_log--;
1541
1542                                 if (starttls_proto)
1543                                         {
1544                                         BIO_printf(bio_err,"%s",mbuf);
1545                                         /* We don't need to know any more */
1546                                         starttls_proto = PROTO_OFF;
1547                                         }
1548
1549                                 if (reconnect)
1550                                         {
1551                                         reconnect--;
1552                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1553                                         SSL_shutdown(con);
1554                                         SSL_set_connect_state(con);
1555                                         SHUTDOWN(SSL_get_fd(con));
1556                                         goto re_start;
1557                                         }
1558                                 }
1559                         }
1560
1561                 ssl_pending = read_ssl && SSL_pending(con);
1562
1563                 if (!ssl_pending)
1564                         {
1565 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
1566                         if (tty_on)
1567                                 {
1568                                 if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
1569                                 if (write_tty) openssl_fdset(fileno(stdout),&writefds);
1570                                 }
1571                         if (read_ssl)
1572                                 openssl_fdset(SSL_get_fd(con),&readfds);
1573                         if (write_ssl)
1574                                 openssl_fdset(SSL_get_fd(con),&writefds);
1575 #else
1576                         if(!tty_on || !write_tty) {
1577                                 if (read_ssl)
1578                                         openssl_fdset(SSL_get_fd(con),&readfds);
1579                                 if (write_ssl)
1580                                         openssl_fdset(SSL_get_fd(con),&writefds);
1581                         }
1582 #endif
1583 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1584                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1585
1586                         /* Note: under VMS with SOCKETSHR the second parameter
1587                          * is currently of type (int *) whereas under other
1588                          * systems it is (void *) if you don't have a cast it
1589                          * will choke the compiler: if you do have a cast then
1590                          * you can either go for (int *) or (void *).
1591                          */
1592 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1593                         /* Under Windows/DOS we make the assumption that we can
1594                          * always write to the tty: therefore if we need to
1595                          * write to the tty we just fall through. Otherwise
1596                          * we timeout the select every second and see if there
1597                          * are any keypresses. Note: this is a hack, in a proper
1598                          * Windows application we wouldn't do this.
1599                          */
1600                         i=0;
1601                         if(!write_tty) {
1602                                 if(read_tty) {
1603                                         tv.tv_sec = 1;
1604                                         tv.tv_usec = 0;
1605                                         i=select(width,(void *)&readfds,(void *)&writefds,
1606                                                  NULL,&tv);
1607 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1608                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1609 #else
1610                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1611 #endif
1612                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1613                                          NULL,timeoutp);
1614                         }
1615 #elif defined(OPENSSL_SYS_NETWARE)
1616                         if(!write_tty) {
1617                                 if(read_tty) {
1618                                         tv.tv_sec = 1;
1619                                         tv.tv_usec = 0;
1620                                         i=select(width,(void *)&readfds,(void *)&writefds,
1621                                                 NULL,&tv);
1622                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1623                                         NULL,timeoutp);
1624                         }
1625 #elif defined(OPENSSL_SYS_BEOS_R5)
1626                         /* Under BeOS-R5 the situation is similar to DOS */
1627                         i=0;
1628                         stdin_set = 0;
1629                         (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
1630                         if(!write_tty) {
1631                                 if(read_tty) {
1632                                         tv.tv_sec = 1;
1633                                         tv.tv_usec = 0;
1634                                         i=select(width,(void *)&readfds,(void *)&writefds,
1635                                                  NULL,&tv);
1636                                         if (read(fileno(stdin), sbuf, 0) >= 0)
1637                                                 stdin_set = 1;
1638                                         if (!i && (stdin_set != 1 || !read_tty))
1639                                                 continue;
1640                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1641                                          NULL,timeoutp);
1642                         }
1643                         (void)fcntl(fileno(stdin), F_SETFL, 0);
1644 #else
1645                         i=select(width,(void *)&readfds,(void *)&writefds,
1646                                  NULL,timeoutp);
1647 #endif
1648                         if ( i < 0)
1649                                 {
1650                                 BIO_printf(bio_err,"bad select %d\n",
1651                                 get_last_socket_error());
1652                                 goto shut;
1653                                 /* goto end; */
1654                                 }
1655                         }
1656
1657                 if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
1658                         {
1659                         BIO_printf(bio_err,"TIMEOUT occured\n");
1660                         }
1661
1662                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1663                         {
1664                         k=SSL_write(con,&(cbuf[cbuf_off]),
1665                                 (unsigned int)cbuf_len);
1666                         switch (SSL_get_error(con,k))
1667                                 {
1668                         case SSL_ERROR_NONE:
1669                                 cbuf_off+=k;
1670                                 cbuf_len-=k;
1671                                 if (k <= 0) goto end;
1672                                 /* we have done a  write(con,NULL,0); */
1673                                 if (cbuf_len <= 0)
1674                                         {
1675                                         read_tty=1;
1676                                         write_ssl=0;
1677                                         }
1678                                 else /* if (cbuf_len > 0) */
1679                                         {
1680                                         read_tty=0;
1681                                         write_ssl=1;
1682                                         }
1683                                 break;
1684                         case SSL_ERROR_WANT_WRITE:
1685                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1686                                 write_ssl=1;
1687                                 read_tty=0;
1688                                 break;
1689                         case SSL_ERROR_WANT_READ:
1690                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1691                                 write_tty=0;
1692                                 read_ssl=1;
1693                                 write_ssl=0;
1694                                 break;
1695                         case SSL_ERROR_WANT_X509_LOOKUP:
1696                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1697                                 break;
1698                         case SSL_ERROR_ZERO_RETURN:
1699                                 if (cbuf_len != 0)
1700                                         {
1701                                         BIO_printf(bio_c_out,"shutdown\n");
1702                                         ret = 0;
1703                                         goto shut;
1704                                         }
1705                                 else
1706                                         {
1707                                         read_tty=1;
1708                                         write_ssl=0;
1709                                         break;
1710                                         }
1711
1712                         case SSL_ERROR_SYSCALL:
1713                                 if ((k != 0) || (cbuf_len != 0))
1714                                         {
1715                                         BIO_printf(bio_err,"write:errno=%d\n",
1716                                                 get_last_socket_error());
1717                                         goto shut;
1718                                         }
1719                                 else
1720                                         {
1721                                         read_tty=1;
1722                                         write_ssl=0;
1723                                         }
1724                                 break;
1725                         case SSL_ERROR_SSL:
1726                                 ERR_print_errors(bio_err);
1727                                 goto shut;
1728                                 }
1729                         }
1730 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
1731                 /* Assume Windows/DOS/BeOS can always write */
1732                 else if (!ssl_pending && write_tty)
1733 #else
1734                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1735 #endif
1736                         {
1737 #ifdef CHARSET_EBCDIC
1738                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1739 #endif
1740                         i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
1741
1742                         if (i <= 0)
1743                                 {
1744                                 BIO_printf(bio_c_out,"DONE\n");
1745                                 ret = 0;
1746                                 goto shut;
1747                                 /* goto end; */
1748                                 }
1749
1750                         sbuf_len-=i;;
1751                         sbuf_off+=i;
1752                         if (sbuf_len <= 0)
1753                                 {
1754                                 read_ssl=1;
1755                                 write_tty=0;
1756                                 }
1757                         }
1758                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1759                         {
1760 #ifdef RENEG
1761 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1762 #endif
1763 #if 1
1764                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1765 #else
1766 /* Demo for pending and peek :-) */
1767                         k=SSL_read(con,sbuf,16);
1768 { char zbuf[10240];
1769 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1770 }
1771 #endif
1772
1773                         switch (SSL_get_error(con,k))
1774                                 {
1775                         case SSL_ERROR_NONE:
1776                                 if (k <= 0)
1777                                         goto end;
1778                                 sbuf_off=0;
1779                                 sbuf_len=k;
1780
1781                                 read_ssl=0;
1782                                 write_tty=1;
1783                                 break;
1784                         case SSL_ERROR_WANT_WRITE:
1785                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1786                                 write_ssl=1;
1787                                 read_tty=0;
1788                                 break;
1789                         case SSL_ERROR_WANT_READ:
1790                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1791                                 write_tty=0;
1792                                 read_ssl=1;
1793                                 if ((read_tty == 0) && (write_ssl == 0))
1794                                         write_ssl=1;
1795                                 break;
1796                         case SSL_ERROR_WANT_X509_LOOKUP:
1797                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1798                                 break;
1799                         case SSL_ERROR_SYSCALL:
1800                                 ret=get_last_socket_error();
1801                                 BIO_printf(bio_err,"read:errno=%d\n",ret);
1802                                 goto shut;
1803                         case SSL_ERROR_ZERO_RETURN:
1804                                 BIO_printf(bio_c_out,"closed\n");
1805                                 ret=0;
1806                                 goto shut;
1807                         case SSL_ERROR_SSL:
1808                                 ERR_print_errors(bio_err);
1809                                 goto shut;
1810                                 /* break; */
1811                                 }
1812                         }
1813
1814 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1815 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1816                 else if (_kbhit())
1817 #else
1818                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1819 #endif
1820 #elif defined (OPENSSL_SYS_NETWARE)
1821                 else if (_kbhit())
1822 #elif defined(OPENSSL_SYS_BEOS_R5)
1823                 else if (stdin_set)
1824 #else
1825                 else if (FD_ISSET(fileno(stdin),&readfds))
1826 #endif
1827                         {
1828                         if (crlf)
1829                                 {
1830                                 int j, lf_num;
1831
1832                                 i=raw_read_stdin(cbuf,BUFSIZZ/2);
1833                                 lf_num = 0;
1834                                 /* both loops are skipped when i <= 0 */
1835                                 for (j = 0; j < i; j++)
1836                                         if (cbuf[j] == '\n')
1837                                                 lf_num++;
1838                                 for (j = i-1; j >= 0; j--)
1839                                         {
1840                                         cbuf[j+lf_num] = cbuf[j];
1841                                         if (cbuf[j] == '\n')
1842                                                 {
1843                                                 lf_num--;
1844                                                 i++;
1845                                                 cbuf[j+lf_num] = '\r';
1846                                                 }
1847                                         }
1848                                 assert(lf_num == 0);
1849                                 }
1850                         else
1851                                 i=raw_read_stdin(cbuf,BUFSIZZ);
1852
1853                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1854                                 {
1855                                 BIO_printf(bio_err,"DONE\n");
1856                                 ret=0;
1857                                 goto shut;
1858                                 }
1859
1860                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1861                                 {
1862                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1863                                 SSL_renegotiate(con);
1864                                 cbuf_len=0;
1865                                 }
1866 #ifndef OPENSSL_NO_HEARTBEATS
1867                         else if ((!c_ign_eof) && (cbuf[0] == 'B'))
1868                                 {
1869                                 BIO_printf(bio_err,"HEARTBEATING\n");
1870                                 SSL_heartbeat(con);
1871                                 cbuf_len=0;
1872                                 }
1873 #endif
1874                         else
1875                                 {
1876                                 cbuf_len=i;
1877                                 cbuf_off=0;
1878 #ifdef CHARSET_EBCDIC
1879                                 ebcdic2ascii(cbuf, cbuf, i);
1880 #endif
1881                                 }
1882
1883                         write_ssl=1;
1884                         read_tty=0;
1885                         }
1886                 }
1887
1888         ret=0;
1889 shut:
1890         if (in_init)
1891                 print_stuff(bio_c_out,con,full_log);
1892         SSL_shutdown(con);
1893         SHUTDOWN(SSL_get_fd(con));
1894 end:
1895         if (con != NULL)
1896                 {
1897                 if (prexit != 0)
1898                         print_stuff(bio_c_out,con,1);
1899                 SSL_free(con);
1900                 }
1901 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1902         if (next_proto.data)
1903                 OPENSSL_free(next_proto.data);
1904 #endif
1905         if (ctx != NULL) SSL_CTX_free(ctx);
1906         if (cert)
1907                 X509_free(cert);
1908         if (key)
1909                 EVP_PKEY_free(key);
1910         if (pass)
1911                 OPENSSL_free(pass);
1912         if (vpm)
1913                 X509_VERIFY_PARAM_free(vpm);
1914         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1915         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1916         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1917         if (bio_c_out != NULL)
1918                 {
1919                 BIO_free(bio_c_out);
1920                 bio_c_out=NULL;
1921                 }
1922         apps_shutdown();
1923         OPENSSL_EXIT(ret);
1924         }
1925
1926
1927 static void print_stuff(BIO *bio, SSL *s, int full)
1928         {
1929         X509 *peer=NULL;
1930         char *p;
1931         static const char *space="                ";
1932         char buf[BUFSIZ];
1933         STACK_OF(X509) *sk;
1934         STACK_OF(X509_NAME) *sk2;
1935         const SSL_CIPHER *c;
1936         X509_NAME *xn;
1937         int j,i;
1938 #ifndef OPENSSL_NO_COMP
1939         const COMP_METHOD *comp, *expansion;
1940 #endif
1941         unsigned char *exportedkeymat;
1942
1943         if (full)
1944                 {
1945                 int got_a_chain = 0;
1946
1947                 sk=SSL_get_peer_cert_chain(s);
1948                 if (sk != NULL)
1949                         {
1950                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1951
1952                         BIO_printf(bio,"---\nCertificate chain\n");
1953                         for (i=0; i<sk_X509_num(sk); i++)
1954                                 {
1955                                 X509_NAME_oneline(X509_get_subject_name(
1956                                         sk_X509_value(sk,i)),buf,sizeof buf);
1957                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1958                                 X509_NAME_oneline(X509_get_issuer_name(
1959                                         sk_X509_value(sk,i)),buf,sizeof buf);
1960                                 BIO_printf(bio,"   i:%s\n",buf);
1961                                 if (c_showcerts)
1962                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1963                                 }
1964                         }
1965
1966                 BIO_printf(bio,"---\n");
1967                 peer=SSL_get_peer_certificate(s);
1968                 if (peer != NULL)
1969                         {
1970                         BIO_printf(bio,"Server certificate\n");
1971                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1972                                 PEM_write_bio_X509(bio,peer);
1973                         X509_NAME_oneline(X509_get_subject_name(peer),
1974                                 buf,sizeof buf);
1975                         BIO_printf(bio,"subject=%s\n",buf);
1976                         X509_NAME_oneline(X509_get_issuer_name(peer),
1977                                 buf,sizeof buf);
1978                         BIO_printf(bio,"issuer=%s\n",buf);
1979                         }
1980                 else
1981                         BIO_printf(bio,"no peer certificate available\n");
1982
1983                 sk2=SSL_get_client_CA_list(s);
1984                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
1985                         {
1986                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
1987                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
1988                                 {
1989                                 xn=sk_X509_NAME_value(sk2,i);
1990                                 X509_NAME_oneline(xn,buf,sizeof(buf));
1991                                 BIO_write(bio,buf,strlen(buf));
1992                                 BIO_write(bio,"\n",1);
1993                                 }
1994                         }
1995                 else
1996                         {
1997                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
1998                         }
1999                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
2000                 if (p != NULL)
2001                         {
2002                         /* This works only for SSL 2.  In later protocol
2003                          * versions, the client does not know what other
2004                          * ciphers (in addition to the one to be used
2005                          * in the current connection) the server supports. */
2006
2007                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
2008                         j=i=0;
2009                         while (*p)
2010                                 {
2011                                 if (*p == ':')
2012                                         {
2013                                         BIO_write(bio,space,15-j%25);
2014                                         i++;
2015                                         j=0;
2016                                         BIO_write(bio,((i%3)?" ":"\n"),1);
2017                                         }
2018                                 else
2019                                         {
2020                                         BIO_write(bio,p,1);
2021                                         j++;
2022                                         }
2023                                 p++;
2024                                 }
2025                         BIO_write(bio,"\n",1);
2026                         }
2027
2028                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
2029                         BIO_number_read(SSL_get_rbio(s)),
2030                         BIO_number_written(SSL_get_wbio(s)));
2031                 }
2032         BIO_printf(bio,(SSL_cache_hit(s)?"---\nReused, ":"---\nNew, "));
2033         c=SSL_get_current_cipher(s);
2034         BIO_printf(bio,"%s, Cipher is %s\n",
2035                 SSL_CIPHER_get_version(c),
2036                 SSL_CIPHER_get_name(c));
2037         if (peer != NULL) {
2038                 EVP_PKEY *pktmp;
2039                 pktmp = X509_get_pubkey(peer);
2040                 BIO_printf(bio,"Server public key is %d bit\n",
2041                                                          EVP_PKEY_bits(pktmp));
2042                 EVP_PKEY_free(pktmp);
2043         }
2044         BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
2045                         SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
2046 #ifndef OPENSSL_NO_COMP
2047         comp=SSL_get_current_compression(s);
2048         expansion=SSL_get_current_expansion(s);
2049         BIO_printf(bio,"Compression: %s\n",
2050                 comp ? SSL_COMP_get_name(comp) : "NONE");
2051         BIO_printf(bio,"Expansion: %s\n",
2052                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
2053 #endif
2054
2055 #ifdef SSL_DEBUG
2056         {
2057         /* Print out local port of connection: useful for debugging */
2058         int sock;
2059         struct sockaddr_in ladd;
2060         socklen_t ladd_size = sizeof(ladd);
2061         sock = SSL_get_fd(s);
2062         getsockname(sock, (struct sockaddr *)&ladd, &ladd_size);
2063         BIO_printf(bio_c_out, "LOCAL PORT is %u\n", ntohs(ladd.sin_port));
2064         }
2065 #endif
2066
2067 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2068         if (next_proto.status != -1) {
2069                 const unsigned char *proto;
2070                 unsigned int proto_len;
2071                 SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
2072                 BIO_printf(bio, "Next protocol: (%d) ", next_proto.status);
2073                 BIO_write(bio, proto, proto_len);
2074                 BIO_write(bio, "\n", 1);
2075         }
2076 #endif
2077
2078 #ifndef OPENSSL_NO_SRTP
2079         {
2080         SRTP_PROTECTION_PROFILE *srtp_profile=SSL_get_selected_srtp_profile(s);
2081
2082         if(srtp_profile)
2083                 BIO_printf(bio,"SRTP Extension negotiated, profile=%s\n",
2084                            srtp_profile->name);
2085         }
2086 #endif
2087
2088         SSL_SESSION_print(bio,SSL_get_session(s));
2089         if (keymatexportlabel != NULL)
2090                 {
2091                 BIO_printf(bio, "Keying material exporter:\n");
2092                 BIO_printf(bio, "    Label: '%s'\n", keymatexportlabel);
2093                 BIO_printf(bio, "    Length: %i bytes\n", keymatexportlen);
2094                 exportedkeymat = OPENSSL_malloc(keymatexportlen);
2095                 if (exportedkeymat != NULL)
2096                         {
2097                         if (!SSL_export_keying_material(s, exportedkeymat,
2098                                                         keymatexportlen,
2099                                                         keymatexportlabel,
2100                                                         strlen(keymatexportlabel),
2101                                                         NULL, 0, 0))
2102                                 {
2103                                 BIO_printf(bio, "    Error\n");
2104                                 }
2105                         else
2106                                 {
2107                                 BIO_printf(bio, "    Keying material: ");
2108                                 for (i=0; i<keymatexportlen; i++)
2109                                         BIO_printf(bio, "%02X",
2110                                                    exportedkeymat[i]);
2111                                 BIO_printf(bio, "\n");
2112                                 }
2113                         OPENSSL_free(exportedkeymat);
2114                         }
2115                 }
2116         BIO_printf(bio,"---\n");
2117         if (peer != NULL)
2118                 X509_free(peer);
2119         /* flush, or debugging output gets mixed with http response */
2120         (void)BIO_flush(bio);
2121         }
2122
2123 #ifndef OPENSSL_NO_TLSEXT
2124
2125 static int ocsp_resp_cb(SSL *s, void *arg)
2126         {
2127         const unsigned char *p;
2128         int len;
2129         OCSP_RESPONSE *rsp;
2130         len = SSL_get_tlsext_status_ocsp_resp(s, &p);
2131         BIO_puts(arg, "OCSP response: ");
2132         if (!p)
2133                 {
2134                 BIO_puts(arg, "no response sent\n");
2135                 return 1;
2136                 }
2137         rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
2138         if (!rsp)
2139                 {
2140                 BIO_puts(arg, "response parse error\n");
2141                 BIO_dump_indent(arg, (char *)p, len, 4);
2142                 return 0;
2143                 }
2144         BIO_puts(arg, "\n======================================\n");
2145         OCSP_RESPONSE_print(arg, rsp, 0);
2146         BIO_puts(arg, "======================================\n");
2147         OCSP_RESPONSE_free(rsp);
2148         return 1;
2149         }
2150
2151 #endif