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 static int c_proof_debug=0;
 206 #endif
 207 static int c_msg=0;
 208 static int c_showcerts=0;
 209
 210 static char *keymatexportlabel=NULL;
 211 static int keymatexportlen=20;
 212
 213 static void sc_usage(void);
 214 static void print_stuff(BIO *berr,SSL *con,int full);
 215 #ifndef OPENSSL_NO_TLSEXT
 216 static int ocsp_resp_cb(SSL *s, void *arg);
 217 static int audit_proof_cb(SSL *s, void *arg);
 218 #endif
 219 static BIO *bio_c_out=NULL;
 220 static int c_quiet=0;
 221 static int c_ign_eof=0;
 222
 223 #ifndef OPENSSL_NO_PSK
 224 /* Default PSK identity and key */
 225 static char *psk_identity="Client_identity";
 226 /*char *psk_key=NULL;  by default PSK is not used */
 227
 228 static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity,
 229         unsigned int max_identity_len, unsigned char *psk,
 230         unsigned int max_psk_len)
 231         {
 232         unsigned int psk_len = 0;
 233         int ret;
 234         BIGNUM *bn=NULL;
 235
 236         if (c_debug)
 237                 BIO_printf(bio_c_out, "psk_client_cb\n");
 238         if (!hint)
 239                 {
 240                 /* no ServerKeyExchange message*/
 241                 if (c_debug)
 242                         BIO_printf(bio_c_out,"NULL received PSK identity hint, continuing anyway\n");
 243                 }
 244         else if (c_debug)
 245                 BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint);
 246
 247         /* lookup PSK identity and PSK key based on the given identity hint here */
 248         ret = BIO_snprintf(identity, max_identity_len, "%s", psk_identity);
 249         if (ret < 0 || (unsigned int)ret > max_identity_len)
 250                 goto out_err;
 251         if (c_debug)
 252                 BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity, ret);
 253         ret=BN_hex2bn(&bn, psk_key);
 254         if (!ret)
 255                 {
 256                 BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
 257                 if (bn)
 258                         BN_free(bn);
 259                 return 0;
 260                 }
 261
 262         if ((unsigned int)BN_num_bytes(bn) > max_psk_len)
 263                 {
 264                 BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
 265                         max_psk_len, BN_num_bytes(bn));
 266                 BN_free(bn);
 267                 return 0;
 268                 }
 269
 270         psk_len=BN_bn2bin(bn, psk);
 271         BN_free(bn);
 272         if (psk_len == 0)
 273                 goto out_err;
 274
 275         if (c_debug)
 276                 BIO_printf(bio_c_out, "created PSK len=%d\n", psk_len);
 277
 278         return psk_len;
 279  out_err:
 280         if (c_debug)
 281                 BIO_printf(bio_err, "Error in PSK client callback\n");
 282         return 0;
 283         }
 284 #endif
 285
 286 static void sc_usage(void)
 287         {
 288         BIO_printf(bio_err,"usage: s_client args\n");
 289         BIO_printf(bio_err,"\n");
 290         BIO_printf(bio_err," -host host     - use -connect instead\n");
 291         BIO_printf(bio_err," -port port     - use -connect instead\n");
 292         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 293
 294         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 295         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 296         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
 297         BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
 298         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 299         BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
 300         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
 301         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 302         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 303         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 304         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 305         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 306         BIO_printf(bio_err," -debug        - extra output\n");
 307 #ifdef WATT32
 308         BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
 309 #endif
 310         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 311         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 312         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 313 #ifdef FIONBIO
 314         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 315 #endif
 316         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 317         BIO_printf(bio_err," -quiet        - no s_client output\n");
 318         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 319         BIO_printf(bio_err," -no_ign_eof   - don't ignore input eof\n");
 320 #ifndef OPENSSL_NO_PSK
 321         BIO_printf(bio_err," -psk_identity arg - PSK identity\n");
 322         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
 323 # ifndef OPENSSL_NO_JPAKE
 324         BIO_printf(bio_err," -jpake arg    - JPAKE secret to use\n");
 325 # endif
 326 #endif
 327 #ifndef OPENSSL_NO_SRP
 328         BIO_printf(bio_err," -srpuser user     - SRP authentification for 'user'\n");
 329         BIO_printf(bio_err," -srppass arg      - password for 'user'\n");
 330         BIO_printf(bio_err," -srp_lateuser     - SRP username into second ClientHello message\n");
 331         BIO_printf(bio_err," -srp_moregroups   - Tolerate other than the known g N values.\n");
 332         BIO_printf(bio_err," -srp_strength int - minimal mength in bits for N (default %d).\n",SRP_MINIMAL_N);
 333 #endif
 334         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 335         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 336         BIO_printf(bio_err," -tls1_2       - just use TLSv1.2\n");
 337         BIO_printf(bio_err," -tls1_1       - just use TLSv1.1\n");
 338         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 339         BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");
 340         BIO_printf(bio_err," -mtu          - set the link layer MTU\n");
 341         BIO_printf(bio_err," -no_tls1_2/-no_tls1_1/-no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 342         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 343         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 344         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 345         BIO_printf(bio_err,"                 command to see what is available\n");
 346         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
 347         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
 348         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
 349         BIO_printf(bio_err,"                 only \"smtp\", \"pop3\", \"imap\", \"ftp\" and \"xmpp\"\n");
 350         BIO_printf(bio_err,"                 are supported.\n");
 351 #ifndef OPENSSL_NO_ENGINE
 352         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 353 #endif
 354         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 355         BIO_printf(bio_err," -sess_out arg - file to write SSL session to\n");
 356         BIO_printf(bio_err," -sess_in arg  - file to read SSL session from\n");
 357 #ifndef OPENSSL_NO_TLSEXT
 358         BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
 359         BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
 360         BIO_printf(bio_err," -status           - request certificate status from server\n");
 361         BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
 362         BIO_printf(bio_err," -proof_debug      - request an audit proof and print its hex dump\n");
 363 # ifndef OPENSSL_NO_NEXTPROTONEG
 364         BIO_printf(bio_err," -nextprotoneg arg - enable NPN extension, considering named protocols supported (comma-separated list)\n");
 365 # endif
 366 #endif
 367         BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
 368         BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
 369         BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
 370         BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
 371         }
 372
 373 #ifndef OPENSSL_NO_TLSEXT
 374
 375 /* This is a context that we pass to callbacks */
 376 typedef struct tlsextctx_st {
 377    BIO * biodebug;
 378    int ack;
 379 } tlsextctx;
 380
 381
 382 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
 383         {
 384         tlsextctx * p = (tlsextctx *) arg;
 385         const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
 386         if (SSL_get_servername_type(s) != -1)
 387                 p->ack = !SSL_session_reused(s) && hn != NULL;
 388         else
 389                 BIO_printf(bio_err,"Can't use SSL_get_servername\n");
 390
 391         return SSL_TLSEXT_ERR_OK;
 392         }
 393
 394 #ifndef OPENSSL_NO_SRP
 395
 396 /* This is a context that we pass to all callbacks */
 397 typedef struct srp_arg_st
 398         {
 399         char *srppassin;
 400         char *srplogin;
 401         int msg;   /* copy from c_msg */
 402         int debug; /* copy from c_debug */
 403         int amp;   /* allow more groups */
 404         int strength /* minimal size for N */ ;
 405         } SRP_ARG;
 406
 407 #define SRP_NUMBER_ITERATIONS_FOR_PRIME 64
 408
 409 static int srp_Verify_N_and_g(const BIGNUM *N, const BIGNUM *g)
 410         {
 411         BN_CTX *bn_ctx = BN_CTX_new();
 412         BIGNUM *p = BN_new();
 413         BIGNUM *r = BN_new();
 414         int ret =
 415                 g != NULL && N != NULL && bn_ctx != NULL && BN_is_odd(N) &&
 416                 BN_is_prime_ex(N, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
 417                 p != NULL && BN_rshift1(p, N) &&
 418
 419                 /* p = (N-1)/2 */
 420                 BN_is_prime_ex(p, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
 421                 r != NULL &&
 422
 423                 /* verify g^((N-1)/2) == -1 (mod N) */
 424                 BN_mod_exp(r, g, p, N, bn_ctx) &&
 425                 BN_add_word(r, 1) &&
 426                 BN_cmp(r, N) == 0;
 427
 428         if(r)
 429                 BN_free(r);
 430         if(p)
 431                 BN_free(p);
 432         if(bn_ctx)
 433                 BN_CTX_free(bn_ctx);
 434         return ret;
 435         }
 436
 437 /* This callback is used here for two purposes:
 438    - extended debugging
 439    - making some primality tests for unknown groups
 440    The callback is only called for a non default group.
 441
 442    An application does not need the call back at all if
 443    only the stanard groups are used.  In real life situations,
 444    client and server already share well known groups,
 445    thus there is no need to verify them.
 446    Furthermore, in case that a server actually proposes a group that
 447    is not one of those defined in RFC 5054, it is more appropriate
 448    to add the group to a static list and then compare since
 449    primality tests are rather cpu consuming.
 450 */
 451
 452 static int MS_CALLBACK ssl_srp_verify_param_cb(SSL *s, void *arg)
 453         {
 454         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 455         BIGNUM *N = NULL, *g = NULL;
 456         if (!(N = SSL_get_srp_N(s)) || !(g = SSL_get_srp_g(s)))
 457                 return 0;
 458         if (srp_arg->debug || srp_arg->msg || srp_arg->amp == 1)
 459                 {
 460                 BIO_printf(bio_err, "SRP parameters:\n");
 461                 BIO_printf(bio_err,"\tN="); BN_print(bio_err,N);
 462                 BIO_printf(bio_err,"\n\tg="); BN_print(bio_err,g);
 463                 BIO_printf(bio_err,"\n");
 464                 }
 465
 466         if (SRP_check_known_gN_param(g,N))
 467                 return 1;
 468
 469         if (srp_arg->amp == 1)
 470                 {
 471                 if (srp_arg->debug)
 472                         BIO_printf(bio_err, "SRP param N and g are not known params, going to check deeper.\n");
 473
 474 /* The srp_moregroups is a real debugging feature.
 475    Implementors should rather add the value to the known ones.
 476    The minimal size has already been tested.
 477 */
 478                 if (BN_num_bits(g) <= BN_BITS && srp_Verify_N_and_g(N,g))
 479                         return 1;
 480                 }
 481         BIO_printf(bio_err, "SRP param N and g rejected.\n");
 482         return 0;
 483         }
 484
 485 #define PWD_STRLEN 1024
 486
 487 static char * MS_CALLBACK ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
 488         {
 489         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 490         char *pass = (char *)OPENSSL_malloc(PWD_STRLEN+1);
 491         PW_CB_DATA cb_tmp;
 492         int l;
 493
 494         cb_tmp.password = (char *)srp_arg->srppassin;
 495         cb_tmp.prompt_info = "SRP user";
 496         if ((l = password_callback(pass, PWD_STRLEN, 0, &cb_tmp))<0)
 497                 {
 498                 BIO_printf (bio_err, "Can't read Password\n");
 499                 OPENSSL_free(pass);
 500                 return NULL;
 501                 }
 502         *(pass+l)= '\0';
 503
 504         return pass;
 505         }
 506
 507 #endif
 508         char *srtp_profiles = NULL;
 509
 510 # ifndef OPENSSL_NO_NEXTPROTONEG
 511 /* This the context that we pass to next_proto_cb */
 512 typedef struct tlsextnextprotoctx_st {
 513         unsigned char *data;
 514         unsigned short len;
 515         int status;
 516 } tlsextnextprotoctx;
 517
 518 static tlsextnextprotoctx next_proto;
 519
 520 static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
 521         {
 522         tlsextnextprotoctx *ctx = arg;
 523
 524         if (!c_quiet)
 525                 {
 526                 /* We can assume that |in| is syntactically valid. */
 527                 unsigned i;
 528                 BIO_printf(bio_c_out, "Protocols advertised by server: ");
 529                 for (i = 0; i < inlen; )
 530                         {
 531                         if (i)
 532                                 BIO_write(bio_c_out, ", ", 2);
 533                         BIO_write(bio_c_out, &in[i + 1], in[i]);
 534                         i += in[i] + 1;
 535                         }
 536                 BIO_write(bio_c_out, "\n", 1);
 537                 }
 538
 539         ctx->status = SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len);
 540         return SSL_TLSEXT_ERR_OK;
 541         }
 542 # endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
 543 #endif
 544
 545 enum
 546 {
 547         PROTO_OFF       = 0,
 548         PROTO_SMTP,
 549         PROTO_POP3,
 550         PROTO_IMAP,
 551         PROTO_FTP,
 552         PROTO_XMPP
 553 };
 554
 555 int MAIN(int, char **);
 556
 557 int MAIN(int argc, char **argv)
 558         {
 559         unsigned int off=0, clr=0;
 560         SSL *con=NULL;
 561 #ifndef OPENSSL_NO_KRB5
 562         KSSL_CTX *kctx;
 563 #endif
 564         int s,k,width,state=0;
 565         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
 566         int cbuf_len,cbuf_off;
 567         int sbuf_len,sbuf_off;
 568         fd_set readfds,writefds;
 569         short port=PORT;
 570         int full_log=1;
 571         char *host=SSL_HOST_NAME;
 572         char *cert_file=NULL,*key_file=NULL;
 573         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
 574         char *passarg = NULL, *pass = NULL;
 575         X509 *cert = NULL;
 576         EVP_PKEY *key = NULL;
 577         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 578         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 579         int crlf=0;
 580         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 581         SSL_CTX *ctx=NULL;
 582         int ret=1,in_init=1,i,nbio_test=0;
 583         int starttls_proto = PROTO_OFF;
 584         int prexit = 0;
 585         X509_VERIFY_PARAM *vpm = NULL;
 586         int badarg = 0;
 587         const SSL_METHOD *meth=NULL;
 588         int socket_type=SOCK_STREAM;
 589         BIO *sbio;
 590         char *inrand=NULL;
 591         int mbuf_len=0;
 592         struct timeval timeout, *timeoutp;
 593 #ifndef OPENSSL_NO_ENGINE
 594         char *engine_id=NULL;
 595         char *ssl_client_engine_id=NULL;
 596         ENGINE *ssl_client_engine=NULL;
 597 #endif
 598         ENGINE *e=NULL;
 599 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
 600         struct timeval tv;
 601 #if defined(OPENSSL_SYS_BEOS_R5)
 602         int stdin_set = 0;
 603 #endif
 604 #endif
 605 #ifndef OPENSSL_NO_TLSEXT
 606         char *servername = NULL;
 607         char *curves=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                 else if (strcmp(*argv,"-proof_debug") == 0)
 738                         c_proof_debug=1;
 739 #endif
 740 #ifdef WATT32
 741                 else if (strcmp(*argv,"-wdebug") == 0)
 742                         dbug_init();
 743 #endif
 744                 else if (strcmp(*argv,"-msg") == 0)
 745                         c_msg=1;
 746                 else if (strcmp(*argv,"-showcerts") == 0)
 747                         c_showcerts=1;
 748                 else if (strcmp(*argv,"-nbio_test") == 0)
 749                         nbio_test=1;
 750                 else if (strcmp(*argv,"-state") == 0)
 751                         state=1;
 752 #ifndef OPENSSL_NO_PSK
 753                 else if (strcmp(*argv,"-psk_identity") == 0)
 754                         {
 755                         if (--argc < 1) goto bad;
 756                         psk_identity=*(++argv);
 757                         }
 758                 else if (strcmp(*argv,"-psk") == 0)
 759                         {
 760                         size_t j;
 761
 762                         if (--argc < 1) goto bad;
 763                         psk_key=*(++argv);
 764                         for (j = 0; j < strlen(psk_key); j++)
 765                                 {
 766                                 if (isxdigit((unsigned char)psk_key[j]))
 767                                         continue;
 768                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
 769                                 goto bad;
 770                                 }
 771                         }
 772 #endif
 773 #ifndef OPENSSL_NO_SRP
 774                 else if (strcmp(*argv,"-srpuser") == 0)
 775                         {
 776                         if (--argc < 1) goto bad;
 777                         srp_arg.srplogin= *(++argv);
 778                         meth=TLSv1_client_method();
 779                         }
 780                 else if (strcmp(*argv,"-srppass") == 0)
 781                         {
 782                         if (--argc < 1) goto bad;
 783                         srppass= *(++argv);
 784                         meth=TLSv1_client_method();
 785                         }
 786                 else if (strcmp(*argv,"-srp_strength") == 0)
 787                         {
 788                         if (--argc < 1) goto bad;
 789                         srp_arg.strength=atoi(*(++argv));
 790                         BIO_printf(bio_err,"SRP minimal length for N is %d\n",srp_arg.strength);
 791                         meth=TLSv1_client_method();
 792                         }
 793                 else if (strcmp(*argv,"-srp_lateuser") == 0)
 794                         {
 795                         srp_lateuser= 1;
 796                         meth=TLSv1_client_method();
 797                         }
 798                 else if (strcmp(*argv,"-srp_moregroups") == 0)
 799                         {
 800                         srp_arg.amp=1;
 801                         meth=TLSv1_client_method();
 802                         }
 803 #endif
 804 #ifndef OPENSSL_NO_SSL2
 805                 else if (strcmp(*argv,"-ssl2") == 0)
 806                         meth=SSLv2_client_method();
 807 #endif
 808 #ifndef OPENSSL_NO_SSL3
 809                 else if (strcmp(*argv,"-ssl3") == 0)
 810                         meth=SSLv3_client_method();
 811 #endif
 812 #ifndef OPENSSL_NO_TLS1
 813                 else if (strcmp(*argv,"-tls1_2") == 0)
 814                         meth=TLSv1_2_client_method();
 815                 else if (strcmp(*argv,"-tls1_1") == 0)
 816                         meth=TLSv1_1_client_method();
 817                 else if (strcmp(*argv,"-tls1") == 0)
 818                         meth=TLSv1_client_method();
 819 #endif
 820 #ifndef OPENSSL_NO_DTLS1
 821                 else if (strcmp(*argv,"-dtls1") == 0)
 822                         {
 823                         meth=DTLSv1_client_method();
 824                         socket_type=SOCK_DGRAM;
 825                         }
 826                 else if (strcmp(*argv,"-timeout") == 0)
 827                         enable_timeouts=1;
 828                 else if (strcmp(*argv,"-mtu") == 0)
 829                         {
 830                         if (--argc < 1) goto bad;
 831                         socket_mtu = atol(*(++argv));
 832                         }
 833 #endif
 834                 else if (strcmp(*argv,"-bugs") == 0)
 835                         bugs=1;
 836                 else if (strcmp(*argv,"-keyform") == 0)
 837                         {
 838                         if (--argc < 1) goto bad;
 839                         key_format = str2fmt(*(++argv));
 840                         }
 841                 else if (strcmp(*argv,"-pass") == 0)
 842                         {
 843                         if (--argc < 1) goto bad;
 844                         passarg = *(++argv);
 845                         }
 846                 else if (strcmp(*argv,"-key") == 0)
 847                         {
 848                         if (--argc < 1) goto bad;
 849                         key_file= *(++argv);
 850                         }
 851                 else if (strcmp(*argv,"-reconnect") == 0)
 852                         {
 853                         reconnect=5;
 854                         }
 855                 else if (strcmp(*argv,"-CApath") == 0)
 856                         {
 857                         if (--argc < 1) goto bad;
 858                         CApath= *(++argv);
 859                         }
 860                 else if (strcmp(*argv,"-CAfile") == 0)
 861                         {
 862                         if (--argc < 1) goto bad;
 863                         CAfile= *(++argv);
 864                         }
 865                 else if (strcmp(*argv,"-no_tls1_2") == 0)
 866                         off|=SSL_OP_NO_TLSv1_2;
 867                 else if (strcmp(*argv,"-no_tls1_1") == 0)
 868                         off|=SSL_OP_NO_TLSv1_1;
 869                 else if (strcmp(*argv,"-no_tls1") == 0)
 870                         off|=SSL_OP_NO_TLSv1;
 871                 else if (strcmp(*argv,"-no_ssl3") == 0)
 872                         off|=SSL_OP_NO_SSLv3;
 873                 else if (strcmp(*argv,"-no_ssl2") == 0)
 874                         off|=SSL_OP_NO_SSLv2;
 875                 else if (strcmp(*argv,"-no_comp") == 0)
 876                         { off|=SSL_OP_NO_COMPRESSION; }
 877 #ifndef OPENSSL_NO_TLSEXT
 878                 else if (strcmp(*argv,"-no_ticket") == 0)
 879                         { off|=SSL_OP_NO_TICKET; }
 880 # ifndef OPENSSL_NO_NEXTPROTONEG
 881                 else if (strcmp(*argv,"-nextprotoneg") == 0)
 882                         {
 883                         if (--argc < 1) goto bad;
 884                         next_proto_neg_in = *(++argv);
 885                         }
 886 # endif
 887 #endif
 888                 else if (strcmp(*argv,"-serverpref") == 0)
 889                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 890                 else if (strcmp(*argv,"-legacy_renegotiation") == 0)
 891                         off|=SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
 892                 else if (strcmp(*argv,"-legacy_server_connect") == 0)
 893                         { off|=SSL_OP_LEGACY_SERVER_CONNECT; }
 894                 else if (strcmp(*argv,"-no_legacy_server_connect") == 0)
 895                         { clr|=SSL_OP_LEGACY_SERVER_CONNECT; }
 896                 else if (strcmp(*argv,"-cipher") == 0)
 897                         {
 898                         if (--argc < 1) goto bad;
 899                         cipher= *(++argv);
 900                         }
 901 #ifdef FIONBIO
 902                 else if (strcmp(*argv,"-nbio") == 0)
 903                         { c_nbio=1; }
 904 #endif
 905                 else if (strcmp(*argv,"-starttls") == 0)
 906                         {
 907                         if (--argc < 1) goto bad;
 908                         ++argv;
 909                         if (strcmp(*argv,"smtp") == 0)
 910                                 starttls_proto = PROTO_SMTP;
 911                         else if (strcmp(*argv,"pop3") == 0)
 912                                 starttls_proto = PROTO_POP3;
 913                         else if (strcmp(*argv,"imap") == 0)
 914                                 starttls_proto = PROTO_IMAP;
 915                         else if (strcmp(*argv,"ftp") == 0)
 916                                 starttls_proto = PROTO_FTP;
 917                         else if (strcmp(*argv, "xmpp") == 0)
 918                                 starttls_proto = PROTO_XMPP;
 919                         else
 920                                 goto bad;
 921                         }
 922 #ifndef OPENSSL_NO_ENGINE
 923                 else if (strcmp(*argv,"-engine") == 0)
 924                         {
 925                         if (--argc < 1) goto bad;
 926                         engine_id = *(++argv);
 927                         }
 928                 else if (strcmp(*argv,"-ssl_client_engine") == 0)
 929                         {
 930                         if (--argc < 1) goto bad;
 931                         ssl_client_engine_id = *(++argv);
 932                         }
 933 #endif
 934                 else if (strcmp(*argv,"-rand") == 0)
 935                         {
 936                         if (--argc < 1) goto bad;
 937                         inrand= *(++argv);
 938                         }
 939 #ifndef OPENSSL_NO_TLSEXT
 940                 else if (strcmp(*argv,"-servername") == 0)
 941                         {
 942                         if (--argc < 1) goto bad;
 943                         servername= *(++argv);
 944                         /* meth=TLSv1_client_method(); */
 945                         }
 946                 else if (strcmp(*argv,"-curves") == 0)
 947                         {
 948                         if (--argc < 1) goto bad;
 949                         curves= *(++argv);
 950                         }
 951 #endif
 952 #ifndef OPENSSL_NO_JPAKE
 953                 else if (strcmp(*argv,"-jpake") == 0)
 954                         {
 955                         if (--argc < 1) goto bad;
 956                         jpake_secret = *++argv;
 957                         }
 958 #endif
 959                 else if (strcmp(*argv,"-use_srtp") == 0)
 960                         {
 961                         if (--argc < 1) goto bad;
 962                         srtp_profiles = *(++argv);
 963                         }
 964                 else if (strcmp(*argv,"-keymatexport") == 0)
 965                         {
 966                         if (--argc < 1) goto bad;
 967                         keymatexportlabel= *(++argv);
 968                         }
 969                 else if (strcmp(*argv,"-keymatexportlen") == 0)
 970                         {
 971                         if (--argc < 1) goto bad;
 972                         keymatexportlen=atoi(*(++argv));
 973                         if (keymatexportlen == 0) goto bad;
 974                         }
 975                 else
 976                         {
 977                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 978                         badop=1;
 979                         break;
 980                         }
 981                 argc--;
 982                 argv++;
 983                 }
 984         if (badop)
 985                 {
 986 bad:
 987                 sc_usage();
 988                 goto end;
 989                 }
 990
 991 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
 992         if (jpake_secret)
 993                 {
 994                 if (psk_key)
 995                         {
 996                         BIO_printf(bio_err,
 997                                    "Can't use JPAKE and PSK together\n");
 998                         goto end;
 999                         }
1000                 psk_identity = "JPAKE";
1001                 }
1002
1003         if (cipher)
1004                 {
1005                 BIO_printf(bio_err, "JPAKE sets cipher to PSK\n");
1006                 goto end;
1007                 }
1008         cipher = "PSK";
1009 #endif
1010
1011         OpenSSL_add_ssl_algorithms();
1012         SSL_load_error_strings();
1013
1014 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1015         next_proto.status = -1;
1016         if (next_proto_neg_in)
1017                 {
1018                 next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
1019                 if (next_proto.data == NULL)
1020                         {
1021                         BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
1022                         goto end;
1023                         }
1024                 }
1025         else
1026                 next_proto.data = NULL;
1027 #endif
1028
1029 #ifndef OPENSSL_NO_ENGINE
1030         e = setup_engine(bio_err, engine_id, 1);
1031         if (ssl_client_engine_id)
1032                 {
1033                 ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
1034                 if (!ssl_client_engine)
1035                         {
1036                         BIO_printf(bio_err,
1037                                         "Error getting client auth engine\n");
1038                         goto end;
1039                         }
1040                 }
1041
1042 #endif
1043         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
1044                 {
1045                 BIO_printf(bio_err, "Error getting password\n");
1046                 goto end;
1047                 }
1048
1049         if (key_file == NULL)
1050                 key_file = cert_file;
1051
1052
1053         if (key_file)
1054
1055                 {
1056
1057                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
1058                                "client certificate private key file");
1059                 if (!key)
1060                         {
1061                         ERR_print_errors(bio_err);
1062                         goto end;
1063                         }
1064
1065                 }
1066
1067         if (cert_file)
1068
1069                 {
1070                 cert = load_cert(bio_err,cert_file,cert_format,
1071                                 NULL, e, "client certificate file");
1072
1073                 if (!cert)
1074                         {
1075                         ERR_print_errors(bio_err);
1076                         goto end;
1077                         }
1078                 }
1079
1080         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1081                 && !RAND_status())
1082                 {
1083                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1084                 }
1085         if (inrand != NULL)
1086                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1087                         app_RAND_load_files(inrand));
1088
1089         if (bio_c_out == NULL)
1090                 {
1091                 if (c_quiet && !c_debug && !c_msg)
1092                         {
1093                         bio_c_out=BIO_new(BIO_s_null());
1094                         }
1095                 else
1096                         {
1097                         if (bio_c_out == NULL)
1098                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1099                         }
1100                 }
1101
1102 #ifndef OPENSSL_NO_SRP
1103         if(!app_passwd(bio_err, srppass, NULL, &srp_arg.srppassin, NULL))
1104                 {
1105                 BIO_printf(bio_err, "Error getting password\n");
1106                 goto end;
1107                 }
1108 #endif
1109
1110         ctx=SSL_CTX_new(meth);
1111         if (ctx == NULL)
1112                 {
1113                 ERR_print_errors(bio_err);
1114                 goto end;
1115                 }
1116
1117         if (vpm)
1118                 SSL_CTX_set1_param(ctx, vpm);
1119
1120 #ifndef OPENSSL_NO_ENGINE
1121         if (ssl_client_engine)
1122                 {
1123                 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
1124                         {
1125                         BIO_puts(bio_err, "Error setting client auth engine\n");
1126                         ERR_print_errors(bio_err);
1127                         ENGINE_free(ssl_client_engine);
1128                         goto end;
1129                         }
1130                 ENGINE_free(ssl_client_engine);
1131                 }
1132 #endif
1133
1134 #ifndef OPENSSL_NO_PSK
1135 #ifdef OPENSSL_NO_JPAKE
1136         if (psk_key != NULL)
1137 #else
1138         if (psk_key != NULL || jpake_secret)
1139 #endif
1140                 {
1141                 if (c_debug)
1142                         BIO_printf(bio_c_out, "PSK key given or JPAKE in use, setting client callback\n");
1143                 SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
1144                 }
1145         if (srtp_profiles != NULL)
1146                 SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
1147 #endif
1148         if (bugs)
1149                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
1150         else
1151                 SSL_CTX_set_options(ctx,off);
1152
1153         if (clr)
1154                 SSL_CTX_clear_options(ctx, clr);
1155         /* DTLS: partial reads end up discarding unread UDP bytes :-(
1156          * Setting read ahead solves this problem.
1157          */
1158         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1159
1160 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1161         if (next_proto.data)
1162                 SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
1163 #endif
1164
1165         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1166         if (cipher != NULL)
1167                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
1168                 BIO_printf(bio_err,"error setting cipher list\n");
1169                 ERR_print_errors(bio_err);
1170                 goto end;
1171         }
1172 #if 0
1173         else
1174                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
1175 #endif
1176
1177         SSL_CTX_set_verify(ctx,verify,verify_callback);
1178         if (!set_cert_key_stuff(ctx,cert,key, NULL))
1179                 goto end;
1180
1181         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1182                 (!SSL_CTX_set_default_verify_paths(ctx)))
1183                 {
1184                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
1185                 ERR_print_errors(bio_err);
1186                 /* goto end; */
1187                 }
1188
1189 #ifndef OPENSSL_NO_TLSEXT
1190         if (curves != NULL)
1191                 if(!SSL_CTX_set1_curves_list(ctx,curves)) {
1192                 BIO_printf(bio_err,"error setting curve list\n");
1193                 ERR_print_errors(bio_err);
1194                 goto end;
1195         }
1196         if (servername != NULL)
1197                 {
1198                 tlsextcbp.biodebug = bio_err;
1199                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1200                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1201                 }
1202 #ifndef OPENSSL_NO_SRP
1203         if (srp_arg.srplogin)
1204                 {
1205                 if (!srp_lateuser && !SSL_CTX_set_srp_username(ctx, srp_arg.srplogin))
1206                         {
1207                         BIO_printf(bio_err,"Unable to set SRP username\n");
1208                         goto end;
1209                         }
1210                 srp_arg.msg = c_msg;
1211                 srp_arg.debug = c_debug ;
1212                 SSL_CTX_set_srp_cb_arg(ctx,&srp_arg);
1213                 SSL_CTX_set_srp_client_pwd_callback(ctx, ssl_give_srp_client_pwd_cb);
1214                 SSL_CTX_set_srp_strength(ctx, srp_arg.strength);
1215                 if (c_msg || c_debug || srp_arg.amp == 0)
1216                         SSL_CTX_set_srp_verify_param_callback(ctx, ssl_srp_verify_param_cb);
1217                 }
1218
1219 #endif
1220         if (c_proof_debug)
1221                 SSL_CTX_set_tlsext_authz_server_audit_proof_cb(ctx,
1222                                                                audit_proof_cb);
1223 #endif
1224
1225         con=SSL_new(ctx);
1226         if (sess_in)
1227                 {
1228                 SSL_SESSION *sess;
1229                 BIO *stmp = BIO_new_file(sess_in, "r");
1230                 if (!stmp)
1231                         {
1232                         BIO_printf(bio_err, "Can't open session file %s\n",
1233                                                 sess_in);
1234                         ERR_print_errors(bio_err);
1235                         goto end;
1236                         }
1237                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
1238                 BIO_free(stmp);
1239                 if (!sess)
1240                         {
1241                         BIO_printf(bio_err, "Can't open session file %s\n",
1242                                                 sess_in);
1243                         ERR_print_errors(bio_err);
1244                         goto end;
1245                         }
1246                 SSL_set_session(con, sess);
1247                 SSL_SESSION_free(sess);
1248                 }
1249 #ifndef OPENSSL_NO_TLSEXT
1250         if (servername != NULL)
1251                 {
1252                 if (!SSL_set_tlsext_host_name(con,servername))
1253                         {
1254                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
1255                         ERR_print_errors(bio_err);
1256                         goto end;
1257                         }
1258                 }
1259 #endif
1260 #ifndef OPENSSL_NO_KRB5
1261         if (con  &&  (kctx = kssl_ctx_new()) != NULL)
1262                 {
1263                 SSL_set0_kssl_ctx(con, kctx);
1264                 kssl_ctx_setstring(kctx, KSSL_SERVER, host);
1265                 }
1266 #endif  /* OPENSSL_NO_KRB5  */
1267 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
1268 #if 0
1269 #ifdef TLSEXT_TYPE_opaque_prf_input
1270         SSL_set_tlsext_opaque_prf_input(con, "Test client", 11);
1271 #endif
1272 #endif
1273
1274 re_start:
1275
1276         if (init_client(&s,host,port,socket_type) == 0)
1277                 {
1278                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
1279                 SHUTDOWN(s);
1280                 goto end;
1281                 }
1282         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
1283
1284 #ifdef FIONBIO
1285         if (c_nbio)
1286                 {
1287                 unsigned long l=1;
1288                 BIO_printf(bio_c_out,"turning on non blocking io\n");
1289                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
1290                         {
1291                         ERR_print_errors(bio_err);
1292                         goto end;
1293                         }
1294                 }
1295 #endif
1296         if (c_Pause & 0x01) SSL_set_debug(con, 1);
1297
1298         if ( SSL_version(con) == DTLS1_VERSION)
1299                 {
1300
1301                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1302                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
1303                         {
1304                         BIO_printf(bio_err, "getsockname:errno=%d\n",
1305                                 get_last_socket_error());
1306                         SHUTDOWN(s);
1307                         goto end;
1308                         }
1309
1310                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
1311
1312                 if (enable_timeouts)
1313                         {
1314                         timeout.tv_sec = 0;
1315                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1316                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1317
1318                         timeout.tv_sec = 0;
1319                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1320                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1321                         }
1322
1323                 if (socket_mtu > 28)
1324                         {
1325                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1326                         SSL_set_mtu(con, socket_mtu - 28);
1327                         }
1328                 else
1329                         /* want to do MTU discovery */
1330                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1331                 }
1332         else
1333                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1334
1335         if (nbio_test)
1336                 {
1337                 BIO *test;
1338
1339                 test=BIO_new(BIO_f_nbio_test());
1340                 sbio=BIO_push(test,sbio);
1341                 }
1342
1343         if (c_debug)
1344                 {
1345                 SSL_set_debug(con, 1);
1346                 BIO_set_callback(sbio,bio_dump_callback);
1347                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
1348                 }
1349         if (c_msg)
1350                 {
1351                 SSL_set_msg_callback(con, msg_cb);
1352                 SSL_set_msg_callback_arg(con, bio_c_out);
1353                 }
1354 #ifndef OPENSSL_NO_TLSEXT
1355         if (c_tlsextdebug)
1356                 {
1357                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
1358                 SSL_set_tlsext_debug_arg(con, bio_c_out);
1359                 }
1360         if (c_status_req)
1361                 {
1362                 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
1363                 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
1364                 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
1365 #if 0
1366 {
1367 STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
1368 OCSP_RESPID *id = OCSP_RESPID_new();
1369 id->value.byKey = ASN1_OCTET_STRING_new();
1370 id->type = V_OCSP_RESPID_KEY;
1371 ASN1_STRING_set(id->value.byKey, "Hello World", -1);
1372 sk_OCSP_RESPID_push(ids, id);
1373 SSL_set_tlsext_status_ids(con, ids);
1374 }
1375 #endif
1376                 }
1377 #endif
1378 #ifndef OPENSSL_NO_JPAKE
1379         if (jpake_secret)
1380                 jpake_client_auth(bio_c_out, sbio, jpake_secret);
1381 #endif
1382
1383         SSL_set_bio(con,sbio,sbio);
1384         SSL_set_connect_state(con);
1385
1386         /* ok, lets connect */
1387         width=SSL_get_fd(con)+1;
1388
1389         read_tty=1;
1390         write_tty=0;
1391         tty_on=0;
1392         read_ssl=1;
1393         write_ssl=1;
1394
1395         cbuf_len=0;
1396         cbuf_off=0;
1397         sbuf_len=0;
1398         sbuf_off=0;
1399
1400         /* This is an ugly hack that does a lot of assumptions */
1401         /* We do have to handle multi-line responses which may come
1402            in a single packet or not. We therefore have to use
1403            BIO_gets() which does need a buffering BIO. So during
1404            the initial chitchat we do push a buffering BIO into the
1405            chain that is removed again later on to not disturb the
1406            rest of the s_client operation. */
1407         if (starttls_proto == PROTO_SMTP)
1408                 {
1409                 int foundit=0;
1410                 BIO *fbio = BIO_new(BIO_f_buffer());
1411                 BIO_push(fbio, sbio);
1412                 /* wait for multi-line response to end from SMTP */
1413                 do
1414                         {
1415                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1416                         }
1417                 while (mbuf_len>3 && mbuf[3]=='-');
1418                 /* STARTTLS command requires EHLO... */
1419                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
1420                 (void)BIO_flush(fbio);
1421                 /* wait for multi-line response to end EHLO SMTP response */
1422                 do
1423                         {
1424                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1425                         if (strstr(mbuf,"STARTTLS"))
1426                                 foundit=1;
1427                         }
1428                 while (mbuf_len>3 && mbuf[3]=='-');
1429                 (void)BIO_flush(fbio);
1430                 BIO_pop(fbio);
1431                 BIO_free(fbio);
1432                 if (!foundit)
1433                         BIO_printf(bio_err,
1434                                    "didn't found starttls in server response,"
1435                                    " try anyway...\n");
1436                 BIO_printf(sbio,"STARTTLS\r\n");
1437                 BIO_read(sbio,sbuf,BUFSIZZ);
1438                 }
1439         else if (starttls_proto == PROTO_POP3)
1440                 {
1441                 BIO_read(sbio,mbuf,BUFSIZZ);
1442                 BIO_printf(sbio,"STLS\r\n");
1443                 BIO_read(sbio,sbuf,BUFSIZZ);
1444                 }
1445         else if (starttls_proto == PROTO_IMAP)
1446                 {
1447                 int foundit=0;
1448                 BIO *fbio = BIO_new(BIO_f_buffer());
1449                 BIO_push(fbio, sbio);
1450                 BIO_gets(fbio,mbuf,BUFSIZZ);
1451                 /* STARTTLS command requires CAPABILITY... */
1452                 BIO_printf(fbio,". CAPABILITY\r\n");
1453                 (void)BIO_flush(fbio);
1454                 /* wait for multi-line CAPABILITY response */
1455                 do
1456                         {
1457                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1458                         if (strstr(mbuf,"STARTTLS"))
1459                                 foundit=1;
1460                         }
1461                 while (mbuf_len>3 && mbuf[0]!='.');
1462                 (void)BIO_flush(fbio);
1463                 BIO_pop(fbio);
1464                 BIO_free(fbio);
1465                 if (!foundit)
1466                         BIO_printf(bio_err,
1467                                    "didn't found STARTTLS in server response,"
1468                                    " try anyway...\n");
1469                 BIO_printf(sbio,". STARTTLS\r\n");
1470                 BIO_read(sbio,sbuf,BUFSIZZ);
1471                 }
1472         else if (starttls_proto == PROTO_FTP)
1473                 {
1474                 BIO *fbio = BIO_new(BIO_f_buffer());
1475                 BIO_push(fbio, sbio);
1476                 /* wait for multi-line response to end from FTP */
1477                 do
1478                         {
1479                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1480                         }
1481                 while (mbuf_len>3 && mbuf[3]=='-');
1482                 (void)BIO_flush(fbio);
1483                 BIO_pop(fbio);
1484                 BIO_free(fbio);
1485                 BIO_printf(sbio,"AUTH TLS\r\n");
1486                 BIO_read(sbio,sbuf,BUFSIZZ);
1487                 }
1488         if (starttls_proto == PROTO_XMPP)
1489                 {
1490                 int seen = 0;
1491                 BIO_printf(sbio,"<stream:stream "
1492                     "xmlns:stream='http://etherx.jabber.org/streams' "
1493                     "xmlns='jabber:client' to='%s' version='1.0'>", host);
1494                 seen = BIO_read(sbio,mbuf,BUFSIZZ);
1495                 mbuf[seen] = 0;
1496                 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
1497                         {
1498                         if (strstr(mbuf, "/stream:features>"))
1499                                 goto shut;
1500                         seen = BIO_read(sbio,mbuf,BUFSIZZ);
1501                         mbuf[seen] = 0;
1502                         }
1503                 BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1504                 seen = BIO_read(sbio,sbuf,BUFSIZZ);
1505                 sbuf[seen] = 0;
1506                 if (!strstr(sbuf, "<proceed"))
1507                         goto shut;
1508                 mbuf[0] = 0;
1509                 }
1510
1511         for (;;)
1512                 {
1513                 FD_ZERO(&readfds);
1514                 FD_ZERO(&writefds);
1515
1516                 if ((SSL_version(con) == DTLS1_VERSION) &&
1517                         DTLSv1_get_timeout(con, &timeout))
1518                         timeoutp = &timeout;
1519                 else
1520                         timeoutp = NULL;
1521
1522                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1523                         {
1524                         in_init=1;
1525                         tty_on=0;
1526                         }
1527                 else
1528                         {
1529                         tty_on=1;
1530                         if (in_init)
1531                                 {
1532                                 in_init=0;
1533 #if 0 /* This test doesn't really work as intended (needs to be fixed) */
1534 #ifndef OPENSSL_NO_TLSEXT
1535                                 if (servername != NULL && !SSL_session_reused(con))
1536                                         {
1537                                         BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
1538                                         }
1539 #endif
1540 #endif
1541                                 if (sess_out)
1542                                         {
1543                                         BIO *stmp = BIO_new_file(sess_out, "w");
1544                                         if (stmp)
1545                                                 {
1546                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1547                                                 BIO_free(stmp);
1548                                                 }
1549                                         else
1550                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1551                                         }
1552                                 print_stuff(bio_c_out,con,full_log);
1553                                 if (full_log > 0) full_log--;
1554
1555                                 if (starttls_proto)
1556                                         {
1557                                         BIO_printf(bio_err,"%s",mbuf);
1558                                         /* We don't need to know any more */
1559                                         starttls_proto = PROTO_OFF;
1560                                         }
1561
1562                                 if (reconnect)
1563                                         {
1564                                         reconnect--;
1565                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1566                                         SSL_shutdown(con);
1567                                         SSL_set_connect_state(con);
1568                                         SHUTDOWN(SSL_get_fd(con));
1569                                         goto re_start;
1570                                         }
1571                                 }
1572                         }
1573
1574                 ssl_pending = read_ssl && SSL_pending(con);
1575
1576                 if (!ssl_pending)
1577                         {
1578 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
1579                         if (tty_on)
1580                                 {
1581                                 if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
1582                                 if (write_tty) openssl_fdset(fileno(stdout),&writefds);
1583                                 }
1584                         if (read_ssl)
1585                                 openssl_fdset(SSL_get_fd(con),&readfds);
1586                         if (write_ssl)
1587                                 openssl_fdset(SSL_get_fd(con),&writefds);
1588 #else
1589                         if(!tty_on || !write_tty) {
1590                                 if (read_ssl)
1591                                         openssl_fdset(SSL_get_fd(con),&readfds);
1592                                 if (write_ssl)
1593                                         openssl_fdset(SSL_get_fd(con),&writefds);
1594                         }
1595 #endif
1596 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1597                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1598
1599                         /* Note: under VMS with SOCKETSHR the second parameter
1600                          * is currently of type (int *) whereas under other
1601                          * systems it is (void *) if you don't have a cast it
1602                          * will choke the compiler: if you do have a cast then
1603                          * you can either go for (int *) or (void *).
1604                          */
1605 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1606                         /* Under Windows/DOS we make the assumption that we can
1607                          * always write to the tty: therefore if we need to
1608                          * write to the tty we just fall through. Otherwise
1609                          * we timeout the select every second and see if there
1610                          * are any keypresses. Note: this is a hack, in a proper
1611                          * Windows application we wouldn't do this.
1612                          */
1613                         i=0;
1614                         if(!write_tty) {
1615                                 if(read_tty) {
1616                                         tv.tv_sec = 1;
1617                                         tv.tv_usec = 0;
1618                                         i=select(width,(void *)&readfds,(void *)&writefds,
1619                                                  NULL,&tv);
1620 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1621                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1622 #else
1623                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1624 #endif
1625                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1626                                          NULL,timeoutp);
1627                         }
1628 #elif defined(OPENSSL_SYS_NETWARE)
1629                         if(!write_tty) {
1630                                 if(read_tty) {
1631                                         tv.tv_sec = 1;
1632                                         tv.tv_usec = 0;
1633                                         i=select(width,(void *)&readfds,(void *)&writefds,
1634                                                 NULL,&tv);
1635                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1636                                         NULL,timeoutp);
1637                         }
1638 #elif defined(OPENSSL_SYS_BEOS_R5)
1639                         /* Under BeOS-R5 the situation is similar to DOS */
1640                         i=0;
1641                         stdin_set = 0;
1642                         (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
1643                         if(!write_tty) {
1644                                 if(read_tty) {
1645                                         tv.tv_sec = 1;
1646                                         tv.tv_usec = 0;
1647                                         i=select(width,(void *)&readfds,(void *)&writefds,
1648                                                  NULL,&tv);
1649                                         if (read(fileno(stdin), sbuf, 0) >= 0)
1650                                                 stdin_set = 1;
1651                                         if (!i && (stdin_set != 1 || !read_tty))
1652                                                 continue;
1653                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1654                                          NULL,timeoutp);
1655                         }
1656                         (void)fcntl(fileno(stdin), F_SETFL, 0);
1657 #else
1658                         i=select(width,(void *)&readfds,(void *)&writefds,
1659                                  NULL,timeoutp);
1660 #endif
1661                         if ( i < 0)
1662                                 {
1663                                 BIO_printf(bio_err,"bad select %d\n",
1664                                 get_last_socket_error());
1665                                 goto shut;
1666                                 /* goto end; */
1667                                 }
1668                         }
1669
1670                 if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
1671                         {
1672                         BIO_printf(bio_err,"TIMEOUT occured\n");
1673                         }
1674
1675                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1676                         {
1677                         k=SSL_write(con,&(cbuf[cbuf_off]),
1678                                 (unsigned int)cbuf_len);
1679                         switch (SSL_get_error(con,k))
1680                                 {
1681                         case SSL_ERROR_NONE:
1682                                 cbuf_off+=k;
1683                                 cbuf_len-=k;
1684                                 if (k <= 0) goto end;
1685                                 /* we have done a  write(con,NULL,0); */
1686                                 if (cbuf_len <= 0)
1687                                         {
1688                                         read_tty=1;
1689                                         write_ssl=0;
1690                                         }
1691                                 else /* if (cbuf_len > 0) */
1692                                         {
1693                                         read_tty=0;
1694                                         write_ssl=1;
1695                                         }
1696                                 break;
1697                         case SSL_ERROR_WANT_WRITE:
1698                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1699                                 write_ssl=1;
1700                                 read_tty=0;
1701                                 break;
1702                         case SSL_ERROR_WANT_READ:
1703                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1704                                 write_tty=0;
1705                                 read_ssl=1;
1706                                 write_ssl=0;
1707                                 break;
1708                         case SSL_ERROR_WANT_X509_LOOKUP:
1709                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1710                                 break;
1711                         case SSL_ERROR_ZERO_RETURN:
1712                                 if (cbuf_len != 0)
1713                                         {
1714                                         BIO_printf(bio_c_out,"shutdown\n");
1715                                         ret = 0;
1716                                         goto shut;
1717                                         }
1718                                 else
1719                                         {
1720                                         read_tty=1;
1721                                         write_ssl=0;
1722                                         break;
1723                                         }
1724
1725                         case SSL_ERROR_SYSCALL:
1726                                 if ((k != 0) || (cbuf_len != 0))
1727                                         {
1728                                         BIO_printf(bio_err,"write:errno=%d\n",
1729                                                 get_last_socket_error());
1730                                         goto shut;
1731                                         }
1732                                 else
1733                                         {
1734                                         read_tty=1;
1735                                         write_ssl=0;
1736                                         }
1737                                 break;
1738                         case SSL_ERROR_SSL:
1739                                 ERR_print_errors(bio_err);
1740                                 goto shut;
1741                                 }
1742                         }
1743 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
1744                 /* Assume Windows/DOS/BeOS can always write */
1745                 else if (!ssl_pending && write_tty)
1746 #else
1747                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1748 #endif
1749                         {
1750 #ifdef CHARSET_EBCDIC
1751                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1752 #endif
1753                         i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
1754
1755                         if (i <= 0)
1756                                 {
1757                                 BIO_printf(bio_c_out,"DONE\n");
1758                                 ret = 0;
1759                                 goto shut;
1760                                 /* goto end; */
1761                                 }
1762
1763                         sbuf_len-=i;;
1764                         sbuf_off+=i;
1765                         if (sbuf_len <= 0)
1766                                 {
1767                                 read_ssl=1;
1768                                 write_tty=0;
1769                                 }
1770                         }
1771                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1772                         {
1773 #ifdef RENEG
1774 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1775 #endif
1776 #if 1
1777                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1778 #else
1779 /* Demo for pending and peek :-) */
1780                         k=SSL_read(con,sbuf,16);
1781 { char zbuf[10240];
1782 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1783 }
1784 #endif
1785
1786                         switch (SSL_get_error(con,k))
1787                                 {
1788                         case SSL_ERROR_NONE:
1789                                 if (k <= 0)
1790                                         goto end;
1791                                 sbuf_off=0;
1792                                 sbuf_len=k;
1793
1794                                 read_ssl=0;
1795                                 write_tty=1;
1796                                 break;
1797                         case SSL_ERROR_WANT_WRITE:
1798                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1799                                 write_ssl=1;
1800                                 read_tty=0;
1801                                 break;
1802                         case SSL_ERROR_WANT_READ:
1803                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1804                                 write_tty=0;
1805                                 read_ssl=1;
1806                                 if ((read_tty == 0) && (write_ssl == 0))
1807                                         write_ssl=1;
1808                                 break;
1809                         case SSL_ERROR_WANT_X509_LOOKUP:
1810                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1811                                 break;
1812                         case SSL_ERROR_SYSCALL:
1813                                 ret=get_last_socket_error();
1814                                 BIO_printf(bio_err,"read:errno=%d\n",ret);
1815                                 goto shut;
1816                         case SSL_ERROR_ZERO_RETURN:
1817                                 BIO_printf(bio_c_out,"closed\n");
1818                                 ret=0;
1819                                 goto shut;
1820                         case SSL_ERROR_SSL:
1821                                 ERR_print_errors(bio_err);
1822                                 goto shut;
1823                                 /* break; */
1824                                 }
1825                         }
1826
1827 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1828 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1829                 else if (_kbhit())
1830 #else
1831                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1832 #endif
1833 #elif defined (OPENSSL_SYS_NETWARE)
1834                 else if (_kbhit())
1835 #elif defined(OPENSSL_SYS_BEOS_R5)
1836                 else if (stdin_set)
1837 #else
1838                 else if (FD_ISSET(fileno(stdin),&readfds))
1839 #endif
1840                         {
1841                         if (crlf)
1842                                 {
1843                                 int j, lf_num;
1844
1845                                 i=raw_read_stdin(cbuf,BUFSIZZ/2);
1846                                 lf_num = 0;
1847                                 /* both loops are skipped when i <= 0 */
1848                                 for (j = 0; j < i; j++)
1849                                         if (cbuf[j] == '\n')
1850                                                 lf_num++;
1851                                 for (j = i-1; j >= 0; j--)
1852                                         {
1853                                         cbuf[j+lf_num] = cbuf[j];
1854                                         if (cbuf[j] == '\n')
1855                                                 {
1856                                                 lf_num--;
1857                                                 i++;
1858                                                 cbuf[j+lf_num] = '\r';
1859                                                 }
1860                                         }
1861                                 assert(lf_num == 0);
1862                                 }
1863                         else
1864                                 i=raw_read_stdin(cbuf,BUFSIZZ);
1865
1866                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1867                                 {
1868                                 BIO_printf(bio_err,"DONE\n");
1869                                 ret=0;
1870                                 goto shut;
1871                                 }
1872
1873                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1874                                 {
1875                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1876                                 SSL_renegotiate(con);
1877                                 cbuf_len=0;
1878                                 }
1879 #ifndef OPENSSL_NO_HEARTBEATS
1880                         else if ((!c_ign_eof) && (cbuf[0] == 'B'))
1881                                 {
1882                                 BIO_printf(bio_err,"HEARTBEATING\n");
1883                                 SSL_heartbeat(con);
1884                                 cbuf_len=0;
1885                                 }
1886 #endif
1887                         else
1888                                 {
1889                                 cbuf_len=i;
1890                                 cbuf_off=0;
1891 #ifdef CHARSET_EBCDIC
1892                                 ebcdic2ascii(cbuf, cbuf, i);
1893 #endif
1894                                 }
1895
1896                         write_ssl=1;
1897                         read_tty=0;
1898                         }
1899                 }
1900
1901         ret=0;
1902 shut:
1903         if (in_init)
1904                 print_stuff(bio_c_out,con,full_log);
1905         SSL_shutdown(con);
1906         SHUTDOWN(SSL_get_fd(con));
1907 end:
1908         if (con != NULL)
1909                 {
1910                 if (prexit != 0)
1911                         print_stuff(bio_c_out,con,1);
1912                 SSL_free(con);
1913                 }
1914         if (ctx != NULL) SSL_CTX_free(ctx);
1915         if (cert)
1916                 X509_free(cert);
1917         if (key)
1918                 EVP_PKEY_free(key);
1919         if (pass)
1920                 OPENSSL_free(pass);
1921         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1922         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1923         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1924         if (bio_c_out != NULL)
1925                 {
1926                 BIO_free(bio_c_out);
1927                 bio_c_out=NULL;
1928                 }
1929         apps_shutdown();
1930         OPENSSL_EXIT(ret);
1931         }
1932
1933
1934 static void print_stuff(BIO *bio, SSL *s, int full)
1935         {
1936         X509 *peer=NULL;
1937         char *p;
1938         static const char *space="                ";
1939         char buf[BUFSIZ];
1940         STACK_OF(X509) *sk;
1941         STACK_OF(X509_NAME) *sk2;
1942         const SSL_CIPHER *c;
1943         X509_NAME *xn;
1944         int j,i;
1945 #ifndef OPENSSL_NO_COMP
1946         const COMP_METHOD *comp, *expansion;
1947 #endif
1948         unsigned char *exportedkeymat;
1949
1950         if (full)
1951                 {
1952                 int got_a_chain = 0;
1953
1954                 sk=SSL_get_peer_cert_chain(s);
1955                 if (sk != NULL)
1956                         {
1957                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1958
1959                         BIO_printf(bio,"---\nCertificate chain\n");
1960                         for (i=0; i<sk_X509_num(sk); i++)
1961                                 {
1962                                 X509_NAME_oneline(X509_get_subject_name(
1963                                         sk_X509_value(sk,i)),buf,sizeof buf);
1964                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1965                                 X509_NAME_oneline(X509_get_issuer_name(
1966                                         sk_X509_value(sk,i)),buf,sizeof buf);
1967                                 BIO_printf(bio,"   i:%s\n",buf);
1968                                 if (c_showcerts)
1969                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1970                                 }
1971                         }
1972
1973                 BIO_printf(bio,"---\n");
1974                 peer=SSL_get_peer_certificate(s);
1975                 if (peer != NULL)
1976                         {
1977                         BIO_printf(bio,"Server certificate\n");
1978                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1979                                 PEM_write_bio_X509(bio,peer);
1980                         X509_NAME_oneline(X509_get_subject_name(peer),
1981                                 buf,sizeof buf);
1982                         BIO_printf(bio,"subject=%s\n",buf);
1983                         X509_NAME_oneline(X509_get_issuer_name(peer),
1984                                 buf,sizeof buf);
1985                         BIO_printf(bio,"issuer=%s\n",buf);
1986                         }
1987                 else
1988                         BIO_printf(bio,"no peer certificate available\n");
1989
1990                 sk2=SSL_get_client_CA_list(s);
1991                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
1992                         {
1993                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
1994                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
1995                                 {
1996                                 xn=sk_X509_NAME_value(sk2,i);
1997                                 X509_NAME_oneline(xn,buf,sizeof(buf));
1998                                 BIO_write(bio,buf,strlen(buf));
1999                                 BIO_write(bio,"\n",1);
2000                                 }
2001                         }
2002                 else
2003                         {
2004                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
2005                         }
2006                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
2007                 if (p != NULL)
2008                         {
2009                         /* This works only for SSL 2.  In later protocol
2010                          * versions, the client does not know what other
2011                          * ciphers (in addition to the one to be used
2012                          * in the current connection) the server supports. */
2013
2014                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
2015                         j=i=0;
2016                         while (*p)
2017                                 {
2018                                 if (*p == ':')
2019                                         {
2020                                         BIO_write(bio,space,15-j%25);
2021                                         i++;
2022                                         j=0;
2023                                         BIO_write(bio,((i%3)?" ":"\n"),1);
2024                                         }
2025                                 else
2026                                         {
2027                                         BIO_write(bio,p,1);
2028                                         j++;
2029                                         }
2030                                 p++;
2031                                 }
2032                         BIO_write(bio,"\n",1);
2033                         }
2034
2035                 ssl_print_sigalgs(bio, s);
2036
2037                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
2038                         BIO_number_read(SSL_get_rbio(s)),
2039                         BIO_number_written(SSL_get_wbio(s)));
2040                 }
2041         BIO_printf(bio,(SSL_cache_hit(s)?"---\nReused, ":"---\nNew, "));
2042         c=SSL_get_current_cipher(s);
2043         BIO_printf(bio,"%s, Cipher is %s\n",
2044                 SSL_CIPHER_get_version(c),
2045                 SSL_CIPHER_get_name(c));
2046         if (peer != NULL) {
2047                 EVP_PKEY *pktmp;
2048                 pktmp = X509_get_pubkey(peer);
2049                 BIO_printf(bio,"Server public key is %d bit\n",
2050                                                          EVP_PKEY_bits(pktmp));
2051                 EVP_PKEY_free(pktmp);
2052         }
2053         BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
2054                         SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
2055 #ifndef OPENSSL_NO_COMP
2056         comp=SSL_get_current_compression(s);
2057         expansion=SSL_get_current_expansion(s);
2058         BIO_printf(bio,"Compression: %s\n",
2059                 comp ? SSL_COMP_get_name(comp) : "NONE");
2060         BIO_printf(bio,"Expansion: %s\n",
2061                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
2062 #endif
2063
2064 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2065         if (next_proto.status != -1) {
2066                 const unsigned char *proto;
2067                 unsigned int proto_len;
2068                 SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
2069                 BIO_printf(bio, "Next protocol: (%d) ", next_proto.status);
2070                 BIO_write(bio, proto, proto_len);
2071                 BIO_write(bio, "\n", 1);
2072         }
2073 #endif
2074
2075 #ifdef SSL_DEBUG
2076         {
2077         /* Print out local port of connection: useful for debugging */
2078         int sock;
2079         struct sockaddr_in ladd;
2080         socklen_t ladd_size = sizeof(ladd);
2081         sock = SSL_get_fd(s);
2082         getsockname(sock, (struct sockaddr *)&ladd, &ladd_size);
2083         BIO_printf(bio_c_out, "LOCAL PORT is %u\n", ntohs(ladd.sin_port));
2084         }
2085 #endif
2086
2087         {
2088         SRTP_PROTECTION_PROFILE *srtp_profile=SSL_get_selected_srtp_profile(s);
2089
2090         if(srtp_profile)
2091                 BIO_printf(bio,"SRTP Extension negotiated, profile=%s\n",
2092                            srtp_profile->name);
2093         }
2094
2095         SSL_SESSION_print(bio,SSL_get_session(s));
2096         if (keymatexportlabel != NULL)
2097                 {
2098                 BIO_printf(bio, "Keying material exporter:\n");
2099                 BIO_printf(bio, "    Label: '%s'\n", keymatexportlabel);
2100                 BIO_printf(bio, "    Length: %i bytes\n", keymatexportlen);
2101                 exportedkeymat = OPENSSL_malloc(keymatexportlen);
2102                 if (exportedkeymat != NULL)
2103                         {
2104                         if (!SSL_export_keying_material(s, exportedkeymat,
2105                                                         keymatexportlen,
2106                                                         keymatexportlabel,
2107                                                         strlen(keymatexportlabel),
2108                                                         NULL, 0, 0))
2109                                 {
2110                                 BIO_printf(bio, "    Error\n");
2111                                 }
2112                         else
2113                                 {
2114                                 BIO_printf(bio, "    Keying material: ");
2115                                 for (i=0; i<keymatexportlen; i++)
2116                                         BIO_printf(bio, "%02X",
2117                                                    exportedkeymat[i]);
2118                                 BIO_printf(bio, "\n");
2119                                 }
2120                         OPENSSL_free(exportedkeymat);
2121                         }
2122                 }
2123         BIO_printf(bio,"---\n");
2124         if (peer != NULL)
2125                 X509_free(peer);
2126         /* flush, or debugging output gets mixed with http response */
2127         (void)BIO_flush(bio);
2128         }
2129
2130 #ifndef OPENSSL_NO_TLSEXT
2131
2132 static int ocsp_resp_cb(SSL *s, void *arg)
2133         {
2134         const unsigned char *p;
2135         int len;
2136         OCSP_RESPONSE *rsp;
2137         len = SSL_get_tlsext_status_ocsp_resp(s, &p);
2138         BIO_puts(arg, "OCSP response: ");
2139         if (!p)
2140                 {
2141                 BIO_puts(arg, "no response sent\n");
2142                 return 1;
2143                 }
2144         rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
2145         if (!rsp)
2146                 {
2147                 BIO_puts(arg, "response parse error\n");
2148                 BIO_dump_indent(arg, (char *)p, len, 4);
2149                 return 0;
2150                 }
2151         BIO_puts(arg, "\n======================================\n");
2152         OCSP_RESPONSE_print(arg, rsp, 0);
2153         BIO_puts(arg, "======================================\n");
2154         OCSP_RESPONSE_free(rsp);
2155         return 1;
2156         }
2157
2158 static int audit_proof_cb(SSL *s, void *arg)
2159         {
2160         const unsigned char *proof;
2161         size_t proof_len;
2162         size_t i;
2163         SSL_SESSION *sess = SSL_get_session(s);
2164
2165         proof = SSL_SESSION_get_tlsext_authz_server_audit_proof(sess,
2166                                                                 &proof_len);
2167         if (proof != NULL)
2168                 {
2169                 BIO_printf(bio_c_out, "Audit proof: ");
2170                 for (i = 0; i < proof_len; ++i)
2171                         BIO_printf(bio_c_out, "%02X", proof[i]);
2172                 BIO_printf(bio_c_out, "\n");
2173                 }
2174         else
2175                 {
2176                 BIO_printf(bio_c_out, "No audit proof found.\n");
2177                 }
2178         return 1;
2179         }
2180 #endif