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(BIGNUM *N, 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                 if (cipher)
1002                         {
1003                         BIO_printf(bio_err, "JPAKE sets cipher to PSK\n");
1004                         goto end;
1005                         }
1006                 cipher = "PSK";
1007                 }
1008 #endif
1009
1010         OpenSSL_add_ssl_algorithms();
1011         SSL_load_error_strings();
1012
1013 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1014         next_proto.status = -1;
1015         if (next_proto_neg_in)
1016                 {
1017                 next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
1018                 if (next_proto.data == NULL)
1019                         {
1020                         BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
1021                         goto end;
1022                         }
1023                 }
1024         else
1025                 next_proto.data = NULL;
1026 #endif
1027
1028 #ifndef OPENSSL_NO_ENGINE
1029         e = setup_engine(bio_err, engine_id, 1);
1030         if (ssl_client_engine_id)
1031                 {
1032                 ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
1033                 if (!ssl_client_engine)
1034                         {
1035                         BIO_printf(bio_err,
1036                                         "Error getting client auth engine\n");
1037                         goto end;
1038                         }
1039                 }
1040
1041 #endif
1042         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
1043                 {
1044                 BIO_printf(bio_err, "Error getting password\n");
1045                 goto end;
1046                 }
1047
1048         if (key_file == NULL)
1049                 key_file = cert_file;
1050
1051
1052         if (key_file)
1053
1054                 {
1055
1056                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
1057                                "client certificate private key file");
1058                 if (!key)
1059                         {
1060                         ERR_print_errors(bio_err);
1061                         goto end;
1062                         }
1063
1064                 }
1065
1066         if (cert_file)
1067
1068                 {
1069                 cert = load_cert(bio_err,cert_file,cert_format,
1070                                 NULL, e, "client certificate file");
1071
1072                 if (!cert)
1073                         {
1074                         ERR_print_errors(bio_err);
1075                         goto end;
1076                         }
1077                 }
1078
1079         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1080                 && !RAND_status())
1081                 {
1082                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1083                 }
1084         if (inrand != NULL)
1085                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1086                         app_RAND_load_files(inrand));
1087
1088         if (bio_c_out == NULL)
1089                 {
1090                 if (c_quiet && !c_debug && !c_msg)
1091                         {
1092                         bio_c_out=BIO_new(BIO_s_null());
1093                         }
1094                 else
1095                         {
1096                         if (bio_c_out == NULL)
1097                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1098                         }
1099                 }
1100
1101 #ifndef OPENSSL_NO_SRP
1102         if(!app_passwd(bio_err, srppass, NULL, &srp_arg.srppassin, NULL))
1103                 {
1104                 BIO_printf(bio_err, "Error getting password\n");
1105                 goto end;
1106                 }
1107 #endif
1108
1109         ctx=SSL_CTX_new(meth);
1110         if (ctx == NULL)
1111                 {
1112                 ERR_print_errors(bio_err);
1113                 goto end;
1114                 }
1115
1116         if (vpm)
1117                 SSL_CTX_set1_param(ctx, vpm);
1118
1119 #ifndef OPENSSL_NO_ENGINE
1120         if (ssl_client_engine)
1121                 {
1122                 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
1123                         {
1124                         BIO_puts(bio_err, "Error setting client auth engine\n");
1125                         ERR_print_errors(bio_err);
1126                         ENGINE_free(ssl_client_engine);
1127                         goto end;
1128                         }
1129                 ENGINE_free(ssl_client_engine);
1130                 }
1131 #endif
1132
1133 #ifndef OPENSSL_NO_PSK
1134 #ifdef OPENSSL_NO_JPAKE
1135         if (psk_key != NULL)
1136 #else
1137         if (psk_key != NULL || jpake_secret)
1138 #endif
1139                 {
1140                 if (c_debug)
1141                         BIO_printf(bio_c_out, "PSK key given or JPAKE in use, setting client callback\n");
1142                 SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
1143                 }
1144         if (srtp_profiles != NULL)
1145                 SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
1146 #endif
1147         if (bugs)
1148                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
1149         else
1150                 SSL_CTX_set_options(ctx,off);
1151
1152         if (clr)
1153                 SSL_CTX_clear_options(ctx, clr);
1154         /* DTLS: partial reads end up discarding unread UDP bytes :-(
1155          * Setting read ahead solves this problem.
1156          */
1157         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1158
1159 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1160         if (next_proto.data)
1161                 SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
1162 #endif
1163
1164         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1165         if (cipher != NULL)
1166                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
1167                 BIO_printf(bio_err,"error setting cipher list\n");
1168                 ERR_print_errors(bio_err);
1169                 goto end;
1170         }
1171 #if 0
1172         else
1173                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
1174 #endif
1175
1176         SSL_CTX_set_verify(ctx,verify,verify_callback);
1177         if (!set_cert_key_stuff(ctx,cert,key, NULL))
1178                 goto end;
1179
1180         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1181                 (!SSL_CTX_set_default_verify_paths(ctx)))
1182                 {
1183                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
1184                 ERR_print_errors(bio_err);
1185                 /* goto end; */
1186                 }
1187
1188 #ifndef OPENSSL_NO_TLSEXT
1189         if (curves != NULL)
1190                 if(!SSL_CTX_set1_curves_list(ctx,curves)) {
1191                 BIO_printf(bio_err,"error setting curve list\n");
1192                 ERR_print_errors(bio_err);
1193                 goto end;
1194         }
1195         if (servername != NULL)
1196                 {
1197                 tlsextcbp.biodebug = bio_err;
1198                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1199                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1200                 }
1201 #ifndef OPENSSL_NO_SRP
1202         if (srp_arg.srplogin)
1203                 {
1204                 if (!srp_lateuser && !SSL_CTX_set_srp_username(ctx, srp_arg.srplogin))
1205                         {
1206                         BIO_printf(bio_err,"Unable to set SRP username\n");
1207                         goto end;
1208                         }
1209                 srp_arg.msg = c_msg;
1210                 srp_arg.debug = c_debug ;
1211                 SSL_CTX_set_srp_cb_arg(ctx,&srp_arg);
1212                 SSL_CTX_set_srp_client_pwd_callback(ctx, ssl_give_srp_client_pwd_cb);
1213                 SSL_CTX_set_srp_strength(ctx, srp_arg.strength);
1214                 if (c_msg || c_debug || srp_arg.amp == 0)
1215                         SSL_CTX_set_srp_verify_param_callback(ctx, ssl_srp_verify_param_cb);
1216                 }
1217
1218 #endif
1219         if (c_proof_debug)
1220                 SSL_CTX_set_tlsext_authz_server_audit_proof_cb(ctx,
1221                                                                audit_proof_cb);
1222 #endif
1223
1224         con=SSL_new(ctx);
1225         if (sess_in)
1226                 {
1227                 SSL_SESSION *sess;
1228                 BIO *stmp = BIO_new_file(sess_in, "r");
1229                 if (!stmp)
1230                         {
1231                         BIO_printf(bio_err, "Can't open session file %s\n",
1232                                                 sess_in);
1233                         ERR_print_errors(bio_err);
1234                         goto end;
1235                         }
1236                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
1237                 BIO_free(stmp);
1238                 if (!sess)
1239                         {
1240                         BIO_printf(bio_err, "Can't open session file %s\n",
1241                                                 sess_in);
1242                         ERR_print_errors(bio_err);
1243                         goto end;
1244                         }
1245                 SSL_set_session(con, sess);
1246                 SSL_SESSION_free(sess);
1247                 }
1248 #ifndef OPENSSL_NO_TLSEXT
1249         if (servername != NULL)
1250                 {
1251                 if (!SSL_set_tlsext_host_name(con,servername))
1252                         {
1253                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
1254                         ERR_print_errors(bio_err);
1255                         goto end;
1256                         }
1257                 }
1258 #endif
1259 #ifndef OPENSSL_NO_KRB5
1260         if (con  &&  (kctx = kssl_ctx_new()) != NULL)
1261                 {
1262                 SSL_set0_kssl_ctx(con, kctx);
1263                 kssl_ctx_setstring(kctx, KSSL_SERVER, host);
1264                 }
1265 #endif  /* OPENSSL_NO_KRB5  */
1266 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
1267 #if 0
1268 #ifdef TLSEXT_TYPE_opaque_prf_input
1269         SSL_set_tlsext_opaque_prf_input(con, "Test client", 11);
1270 #endif
1271 #endif
1272
1273 re_start:
1274
1275         if (init_client(&s,host,port,socket_type) == 0)
1276                 {
1277                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
1278                 SHUTDOWN(s);
1279                 goto end;
1280                 }
1281         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
1282
1283 #ifdef FIONBIO
1284         if (c_nbio)
1285                 {
1286                 unsigned long l=1;
1287                 BIO_printf(bio_c_out,"turning on non blocking io\n");
1288                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
1289                         {
1290                         ERR_print_errors(bio_err);
1291                         goto end;
1292                         }
1293                 }
1294 #endif
1295         if (c_Pause & 0x01) SSL_set_debug(con, 1);
1296
1297         if ( SSL_version(con) == DTLS1_VERSION)
1298                 {
1299
1300                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1301                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
1302                         {
1303                         BIO_printf(bio_err, "getsockname:errno=%d\n",
1304                                 get_last_socket_error());
1305                         SHUTDOWN(s);
1306                         goto end;
1307                         }
1308
1309                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
1310
1311                 if (enable_timeouts)
1312                         {
1313                         timeout.tv_sec = 0;
1314                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1315                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1316
1317                         timeout.tv_sec = 0;
1318                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1319                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1320                         }
1321
1322                 if (socket_mtu > 28)
1323                         {
1324                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1325                         SSL_set_mtu(con, socket_mtu - 28);
1326                         }
1327                 else
1328                         /* want to do MTU discovery */
1329                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1330                 }
1331         else
1332                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1333
1334         if (nbio_test)
1335                 {
1336                 BIO *test;
1337
1338                 test=BIO_new(BIO_f_nbio_test());
1339                 sbio=BIO_push(test,sbio);
1340                 }
1341
1342         if (c_debug)
1343                 {
1344                 SSL_set_debug(con, 1);
1345                 BIO_set_callback(sbio,bio_dump_callback);
1346                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
1347                 }
1348         if (c_msg)
1349                 {
1350                 SSL_set_msg_callback(con, msg_cb);
1351                 SSL_set_msg_callback_arg(con, bio_c_out);
1352                 }
1353 #ifndef OPENSSL_NO_TLSEXT
1354         if (c_tlsextdebug)
1355                 {
1356                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
1357                 SSL_set_tlsext_debug_arg(con, bio_c_out);
1358                 }
1359         if (c_status_req)
1360                 {
1361                 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
1362                 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
1363                 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
1364 #if 0
1365 {
1366 STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
1367 OCSP_RESPID *id = OCSP_RESPID_new();
1368 id->value.byKey = ASN1_OCTET_STRING_new();
1369 id->type = V_OCSP_RESPID_KEY;
1370 ASN1_STRING_set(id->value.byKey, "Hello World", -1);
1371 sk_OCSP_RESPID_push(ids, id);
1372 SSL_set_tlsext_status_ids(con, ids);
1373 }
1374 #endif
1375                 }
1376 #endif
1377 #ifndef OPENSSL_NO_JPAKE
1378         if (jpake_secret)
1379                 jpake_client_auth(bio_c_out, sbio, jpake_secret);
1380 #endif
1381
1382         SSL_set_bio(con,sbio,sbio);
1383         SSL_set_connect_state(con);
1384
1385         /* ok, lets connect */
1386         width=SSL_get_fd(con)+1;
1387
1388         read_tty=1;
1389         write_tty=0;
1390         tty_on=0;
1391         read_ssl=1;
1392         write_ssl=1;
1393
1394         cbuf_len=0;
1395         cbuf_off=0;
1396         sbuf_len=0;
1397         sbuf_off=0;
1398
1399         /* This is an ugly hack that does a lot of assumptions */
1400         /* We do have to handle multi-line responses which may come
1401            in a single packet or not. We therefore have to use
1402            BIO_gets() which does need a buffering BIO. So during
1403            the initial chitchat we do push a buffering BIO into the
1404            chain that is removed again later on to not disturb the
1405            rest of the s_client operation. */
1406         if (starttls_proto == PROTO_SMTP)
1407                 {
1408                 int foundit=0;
1409                 BIO *fbio = BIO_new(BIO_f_buffer());
1410                 BIO_push(fbio, sbio);
1411                 /* wait for multi-line response to end from SMTP */
1412                 do
1413                         {
1414                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1415                         }
1416                 while (mbuf_len>3 && mbuf[3]=='-');
1417                 /* STARTTLS command requires EHLO... */
1418                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
1419                 (void)BIO_flush(fbio);
1420                 /* wait for multi-line response to end EHLO SMTP response */
1421                 do
1422                         {
1423                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1424                         if (strstr(mbuf,"STARTTLS"))
1425                                 foundit=1;
1426                         }
1427                 while (mbuf_len>3 && mbuf[3]=='-');
1428                 (void)BIO_flush(fbio);
1429                 BIO_pop(fbio);
1430                 BIO_free(fbio);
1431                 if (!foundit)
1432                         BIO_printf(bio_err,
1433                                    "didn't found starttls in server response,"
1434                                    " try anyway...\n");
1435                 BIO_printf(sbio,"STARTTLS\r\n");
1436                 BIO_read(sbio,sbuf,BUFSIZZ);
1437                 }
1438         else if (starttls_proto == PROTO_POP3)
1439                 {
1440                 BIO_read(sbio,mbuf,BUFSIZZ);
1441                 BIO_printf(sbio,"STLS\r\n");
1442                 BIO_read(sbio,sbuf,BUFSIZZ);
1443                 }
1444         else if (starttls_proto == PROTO_IMAP)
1445                 {
1446                 int foundit=0;
1447                 BIO *fbio = BIO_new(BIO_f_buffer());
1448                 BIO_push(fbio, sbio);
1449                 BIO_gets(fbio,mbuf,BUFSIZZ);
1450                 /* STARTTLS command requires CAPABILITY... */
1451                 BIO_printf(fbio,". CAPABILITY\r\n");
1452                 (void)BIO_flush(fbio);
1453                 /* wait for multi-line CAPABILITY response */
1454                 do
1455                         {
1456                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1457                         if (strstr(mbuf,"STARTTLS"))
1458                                 foundit=1;
1459                         }
1460                 while (mbuf_len>3 && mbuf[0]!='.');
1461                 (void)BIO_flush(fbio);
1462                 BIO_pop(fbio);
1463                 BIO_free(fbio);
1464                 if (!foundit)
1465                         BIO_printf(bio_err,
1466                                    "didn't found STARTTLS in server response,"
1467                                    " try anyway...\n");
1468                 BIO_printf(sbio,". STARTTLS\r\n");
1469                 BIO_read(sbio,sbuf,BUFSIZZ);
1470                 }
1471         else if (starttls_proto == PROTO_FTP)
1472                 {
1473                 BIO *fbio = BIO_new(BIO_f_buffer());
1474                 BIO_push(fbio, sbio);
1475                 /* wait for multi-line response to end from FTP */
1476                 do
1477                         {
1478                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1479                         }
1480                 while (mbuf_len>3 && mbuf[3]=='-');
1481                 (void)BIO_flush(fbio);
1482                 BIO_pop(fbio);
1483                 BIO_free(fbio);
1484                 BIO_printf(sbio,"AUTH TLS\r\n");
1485                 BIO_read(sbio,sbuf,BUFSIZZ);
1486                 }
1487         if (starttls_proto == PROTO_XMPP)
1488                 {
1489                 int seen = 0;
1490                 BIO_printf(sbio,"<stream:stream "
1491                     "xmlns:stream='http://etherx.jabber.org/streams' "
1492                     "xmlns='jabber:client' to='%s' version='1.0'>", host);
1493                 seen = BIO_read(sbio,mbuf,BUFSIZZ);
1494                 mbuf[seen] = 0;
1495                 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
1496                         {
1497                         if (strstr(mbuf, "/stream:features>"))
1498                                 goto shut;
1499                         seen = BIO_read(sbio,mbuf,BUFSIZZ);
1500                         mbuf[seen] = 0;
1501                         }
1502                 BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1503                 seen = BIO_read(sbio,sbuf,BUFSIZZ);
1504                 sbuf[seen] = 0;
1505                 if (!strstr(sbuf, "<proceed"))
1506                         goto shut;
1507                 mbuf[0] = 0;
1508                 }
1509
1510         for (;;)
1511                 {
1512                 FD_ZERO(&readfds);
1513                 FD_ZERO(&writefds);
1514
1515                 if ((SSL_version(con) == DTLS1_VERSION) &&
1516                         DTLSv1_get_timeout(con, &timeout))
1517                         timeoutp = &timeout;
1518                 else
1519                         timeoutp = NULL;
1520
1521                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1522                         {
1523                         in_init=1;
1524                         tty_on=0;
1525                         }
1526                 else
1527                         {
1528                         tty_on=1;
1529                         if (in_init)
1530                                 {
1531                                 in_init=0;
1532 #if 0 /* This test doesn't really work as intended (needs to be fixed) */
1533 #ifndef OPENSSL_NO_TLSEXT
1534                                 if (servername != NULL && !SSL_session_reused(con))
1535                                         {
1536                                         BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
1537                                         }
1538 #endif
1539 #endif
1540                                 if (sess_out)
1541                                         {
1542                                         BIO *stmp = BIO_new_file(sess_out, "w");
1543                                         if (stmp)
1544                                                 {
1545                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1546                                                 BIO_free(stmp);
1547                                                 }
1548                                         else
1549                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1550                                         }
1551                                 print_stuff(bio_c_out,con,full_log);
1552                                 if (full_log > 0) full_log--;
1553
1554                                 if (starttls_proto)
1555                                         {
1556                                         BIO_printf(bio_err,"%s",mbuf);
1557                                         /* We don't need to know any more */
1558                                         starttls_proto = PROTO_OFF;
1559                                         }
1560
1561                                 if (reconnect)
1562                                         {
1563                                         reconnect--;
1564                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1565                                         SSL_shutdown(con);
1566                                         SSL_set_connect_state(con);
1567                                         SHUTDOWN(SSL_get_fd(con));
1568                                         goto re_start;
1569                                         }
1570                                 }
1571                         }
1572
1573                 ssl_pending = read_ssl && SSL_pending(con);
1574
1575                 if (!ssl_pending)
1576                         {
1577 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
1578                         if (tty_on)
1579                                 {
1580                                 if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
1581                                 if (write_tty) openssl_fdset(fileno(stdout),&writefds);
1582                                 }
1583                         if (read_ssl)
1584                                 openssl_fdset(SSL_get_fd(con),&readfds);
1585                         if (write_ssl)
1586                                 openssl_fdset(SSL_get_fd(con),&writefds);
1587 #else
1588                         if(!tty_on || !write_tty) {
1589                                 if (read_ssl)
1590                                         openssl_fdset(SSL_get_fd(con),&readfds);
1591                                 if (write_ssl)
1592                                         openssl_fdset(SSL_get_fd(con),&writefds);
1593                         }
1594 #endif
1595 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1596                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1597
1598                         /* Note: under VMS with SOCKETSHR the second parameter
1599                          * is currently of type (int *) whereas under other
1600                          * systems it is (void *) if you don't have a cast it
1601                          * will choke the compiler: if you do have a cast then
1602                          * you can either go for (int *) or (void *).
1603                          */
1604 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1605                         /* Under Windows/DOS we make the assumption that we can
1606                          * always write to the tty: therefore if we need to
1607                          * write to the tty we just fall through. Otherwise
1608                          * we timeout the select every second and see if there
1609                          * are any keypresses. Note: this is a hack, in a proper
1610                          * Windows application we wouldn't do this.
1611                          */
1612                         i=0;
1613                         if(!write_tty) {
1614                                 if(read_tty) {
1615                                         tv.tv_sec = 1;
1616                                         tv.tv_usec = 0;
1617                                         i=select(width,(void *)&readfds,(void *)&writefds,
1618                                                  NULL,&tv);
1619 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1620                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1621 #else
1622                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1623 #endif
1624                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1625                                          NULL,timeoutp);
1626                         }
1627 #elif defined(OPENSSL_SYS_NETWARE)
1628                         if(!write_tty) {
1629                                 if(read_tty) {
1630                                         tv.tv_sec = 1;
1631                                         tv.tv_usec = 0;
1632                                         i=select(width,(void *)&readfds,(void *)&writefds,
1633                                                 NULL,&tv);
1634                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1635                                         NULL,timeoutp);
1636                         }
1637 #elif defined(OPENSSL_SYS_BEOS_R5)
1638                         /* Under BeOS-R5 the situation is similar to DOS */
1639                         i=0;
1640                         stdin_set = 0;
1641                         (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
1642                         if(!write_tty) {
1643                                 if(read_tty) {
1644                                         tv.tv_sec = 1;
1645                                         tv.tv_usec = 0;
1646                                         i=select(width,(void *)&readfds,(void *)&writefds,
1647                                                  NULL,&tv);
1648                                         if (read(fileno(stdin), sbuf, 0) >= 0)
1649                                                 stdin_set = 1;
1650                                         if (!i && (stdin_set != 1 || !read_tty))
1651                                                 continue;
1652                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1653                                          NULL,timeoutp);
1654                         }
1655                         (void)fcntl(fileno(stdin), F_SETFL, 0);
1656 #else
1657                         i=select(width,(void *)&readfds,(void *)&writefds,
1658                                  NULL,timeoutp);
1659 #endif
1660                         if ( i < 0)
1661                                 {
1662                                 BIO_printf(bio_err,"bad select %d\n",
1663                                 get_last_socket_error());
1664                                 goto shut;
1665                                 /* goto end; */
1666                                 }
1667                         }
1668
1669                 if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
1670                         {
1671                         BIO_printf(bio_err,"TIMEOUT occured\n");
1672                         }
1673
1674                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1675                         {
1676                         k=SSL_write(con,&(cbuf[cbuf_off]),
1677                                 (unsigned int)cbuf_len);
1678                         switch (SSL_get_error(con,k))
1679                                 {
1680                         case SSL_ERROR_NONE:
1681                                 cbuf_off+=k;
1682                                 cbuf_len-=k;
1683                                 if (k <= 0) goto end;
1684                                 /* we have done a  write(con,NULL,0); */
1685                                 if (cbuf_len <= 0)
1686                                         {
1687                                         read_tty=1;
1688                                         write_ssl=0;
1689                                         }
1690                                 else /* if (cbuf_len > 0) */
1691                                         {
1692                                         read_tty=0;
1693                                         write_ssl=1;
1694                                         }
1695                                 break;
1696                         case SSL_ERROR_WANT_WRITE:
1697                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1698                                 write_ssl=1;
1699                                 read_tty=0;
1700                                 break;
1701                         case SSL_ERROR_WANT_READ:
1702                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1703                                 write_tty=0;
1704                                 read_ssl=1;
1705                                 write_ssl=0;
1706                                 break;
1707                         case SSL_ERROR_WANT_X509_LOOKUP:
1708                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1709                                 break;
1710                         case SSL_ERROR_ZERO_RETURN:
1711                                 if (cbuf_len != 0)
1712                                         {
1713                                         BIO_printf(bio_c_out,"shutdown\n");
1714                                         ret = 0;
1715                                         goto shut;
1716                                         }
1717                                 else
1718                                         {
1719                                         read_tty=1;
1720                                         write_ssl=0;
1721                                         break;
1722                                         }
1723
1724                         case SSL_ERROR_SYSCALL:
1725                                 if ((k != 0) || (cbuf_len != 0))
1726                                         {
1727                                         BIO_printf(bio_err,"write:errno=%d\n",
1728                                                 get_last_socket_error());
1729                                         goto shut;
1730                                         }
1731                                 else
1732                                         {
1733                                         read_tty=1;
1734                                         write_ssl=0;
1735                                         }
1736                                 break;
1737                         case SSL_ERROR_SSL:
1738                                 ERR_print_errors(bio_err);
1739                                 goto shut;
1740                                 }
1741                         }
1742 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
1743                 /* Assume Windows/DOS/BeOS can always write */
1744                 else if (!ssl_pending && write_tty)
1745 #else
1746                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1747 #endif
1748                         {
1749 #ifdef CHARSET_EBCDIC
1750                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1751 #endif
1752                         i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
1753
1754                         if (i <= 0)
1755                                 {
1756                                 BIO_printf(bio_c_out,"DONE\n");
1757                                 ret = 0;
1758                                 goto shut;
1759                                 /* goto end; */
1760                                 }
1761
1762                         sbuf_len-=i;;
1763                         sbuf_off+=i;
1764                         if (sbuf_len <= 0)
1765                                 {
1766                                 read_ssl=1;
1767                                 write_tty=0;
1768                                 }
1769                         }
1770                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1771                         {
1772 #ifdef RENEG
1773 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1774 #endif
1775 #if 1
1776                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1777 #else
1778 /* Demo for pending and peek :-) */
1779                         k=SSL_read(con,sbuf,16);
1780 { char zbuf[10240];
1781 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1782 }
1783 #endif
1784
1785                         switch (SSL_get_error(con,k))
1786                                 {
1787                         case SSL_ERROR_NONE:
1788                                 if (k <= 0)
1789                                         goto end;
1790                                 sbuf_off=0;
1791                                 sbuf_len=k;
1792
1793                                 read_ssl=0;
1794                                 write_tty=1;
1795                                 break;
1796                         case SSL_ERROR_WANT_WRITE:
1797                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1798                                 write_ssl=1;
1799                                 read_tty=0;
1800                                 break;
1801                         case SSL_ERROR_WANT_READ:
1802                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1803                                 write_tty=0;
1804                                 read_ssl=1;
1805                                 if ((read_tty == 0) && (write_ssl == 0))
1806                                         write_ssl=1;
1807                                 break;
1808                         case SSL_ERROR_WANT_X509_LOOKUP:
1809                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1810                                 break;
1811                         case SSL_ERROR_SYSCALL:
1812                                 ret=get_last_socket_error();
1813                                 BIO_printf(bio_err,"read:errno=%d\n",ret);
1814                                 goto shut;
1815                         case SSL_ERROR_ZERO_RETURN:
1816                                 BIO_printf(bio_c_out,"closed\n");
1817                                 ret=0;
1818                                 goto shut;
1819                         case SSL_ERROR_SSL:
1820                                 ERR_print_errors(bio_err);
1821                                 goto shut;
1822                                 /* break; */
1823                                 }
1824                         }
1825
1826 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1827 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1828                 else if (_kbhit())
1829 #else
1830                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1831 #endif
1832 #elif defined (OPENSSL_SYS_NETWARE)
1833                 else if (_kbhit())
1834 #elif defined(OPENSSL_SYS_BEOS_R5)
1835                 else if (stdin_set)
1836 #else
1837                 else if (FD_ISSET(fileno(stdin),&readfds))
1838 #endif
1839                         {
1840                         if (crlf)
1841                                 {
1842                                 int j, lf_num;
1843
1844                                 i=raw_read_stdin(cbuf,BUFSIZZ/2);
1845                                 lf_num = 0;
1846                                 /* both loops are skipped when i <= 0 */
1847                                 for (j = 0; j < i; j++)
1848                                         if (cbuf[j] == '\n')
1849                                                 lf_num++;
1850                                 for (j = i-1; j >= 0; j--)
1851                                         {
1852                                         cbuf[j+lf_num] = cbuf[j];
1853                                         if (cbuf[j] == '\n')
1854                                                 {
1855                                                 lf_num--;
1856                                                 i++;
1857                                                 cbuf[j+lf_num] = '\r';
1858                                                 }
1859                                         }
1860                                 assert(lf_num == 0);
1861                                 }
1862                         else
1863                                 i=raw_read_stdin(cbuf,BUFSIZZ);
1864
1865                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1866                                 {
1867                                 BIO_printf(bio_err,"DONE\n");
1868                                 ret=0;
1869                                 goto shut;
1870                                 }
1871
1872                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1873                                 {
1874                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1875                                 SSL_renegotiate(con);
1876                                 cbuf_len=0;
1877                                 }
1878 #ifndef OPENSSL_NO_HEARTBEATS
1879                         else if ((!c_ign_eof) && (cbuf[0] == 'B'))
1880                                 {
1881                                 BIO_printf(bio_err,"HEARTBEATING\n");
1882                                 SSL_heartbeat(con);
1883                                 cbuf_len=0;
1884                                 }
1885 #endif
1886                         else
1887                                 {
1888                                 cbuf_len=i;
1889                                 cbuf_off=0;
1890 #ifdef CHARSET_EBCDIC
1891                                 ebcdic2ascii(cbuf, cbuf, i);
1892 #endif
1893                                 }
1894
1895                         write_ssl=1;
1896                         read_tty=0;
1897                         }
1898                 }
1899
1900         ret=0;
1901 shut:
1902         if (in_init)
1903                 print_stuff(bio_c_out,con,full_log);
1904         SSL_shutdown(con);
1905         SHUTDOWN(SSL_get_fd(con));
1906 end:
1907         if (con != NULL)
1908                 {
1909                 if (prexit != 0)
1910                         print_stuff(bio_c_out,con,1);
1911                 SSL_free(con);
1912                 }
1913         if (ctx != NULL) SSL_CTX_free(ctx);
1914         if (cert)
1915                 X509_free(cert);
1916         if (key)
1917                 EVP_PKEY_free(key);
1918         if (pass)
1919                 OPENSSL_free(pass);
1920         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1921         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1922         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1923         if (bio_c_out != NULL)
1924                 {
1925                 BIO_free(bio_c_out);
1926                 bio_c_out=NULL;
1927                 }
1928         apps_shutdown();
1929         OPENSSL_EXIT(ret);
1930         }
1931
1932
1933 static void print_stuff(BIO *bio, SSL *s, int full)
1934         {
1935         X509 *peer=NULL;
1936         char *p;
1937         static const char *space="                ";
1938         char buf[BUFSIZ];
1939         STACK_OF(X509) *sk;
1940         STACK_OF(X509_NAME) *sk2;
1941         const SSL_CIPHER *c;
1942         X509_NAME *xn;
1943         int j,i;
1944 #ifndef OPENSSL_NO_COMP
1945         const COMP_METHOD *comp, *expansion;
1946 #endif
1947         unsigned char *exportedkeymat;
1948
1949         if (full)
1950                 {
1951                 int got_a_chain = 0;
1952
1953                 sk=SSL_get_peer_cert_chain(s);
1954                 if (sk != NULL)
1955                         {
1956                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1957
1958                         BIO_printf(bio,"---\nCertificate chain\n");
1959                         for (i=0; i<sk_X509_num(sk); i++)
1960                                 {
1961                                 X509_NAME_oneline(X509_get_subject_name(
1962                                         sk_X509_value(sk,i)),buf,sizeof buf);
1963                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1964                                 X509_NAME_oneline(X509_get_issuer_name(
1965                                         sk_X509_value(sk,i)),buf,sizeof buf);
1966                                 BIO_printf(bio,"   i:%s\n",buf);
1967                                 if (c_showcerts)
1968                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1969                                 }
1970                         }
1971
1972                 BIO_printf(bio,"---\n");
1973                 peer=SSL_get_peer_certificate(s);
1974                 if (peer != NULL)
1975                         {
1976                         BIO_printf(bio,"Server certificate\n");
1977                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1978                                 PEM_write_bio_X509(bio,peer);
1979                         X509_NAME_oneline(X509_get_subject_name(peer),
1980                                 buf,sizeof buf);
1981                         BIO_printf(bio,"subject=%s\n",buf);
1982                         X509_NAME_oneline(X509_get_issuer_name(peer),
1983                                 buf,sizeof buf);
1984                         BIO_printf(bio,"issuer=%s\n",buf);
1985                         }
1986                 else
1987                         BIO_printf(bio,"no peer certificate available\n");
1988
1989                 sk2=SSL_get_client_CA_list(s);
1990                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
1991                         {
1992                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
1993                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
1994                                 {
1995                                 xn=sk_X509_NAME_value(sk2,i);
1996                                 X509_NAME_oneline(xn,buf,sizeof(buf));
1997                                 BIO_write(bio,buf,strlen(buf));
1998                                 BIO_write(bio,"\n",1);
1999                                 }
2000                         }
2001                 else
2002                         {
2003                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
2004                         }
2005                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
2006                 if (p != NULL)
2007                         {
2008                         /* This works only for SSL 2.  In later protocol
2009                          * versions, the client does not know what other
2010                          * ciphers (in addition to the one to be used
2011                          * in the current connection) the server supports. */
2012
2013                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
2014                         j=i=0;
2015                         while (*p)
2016                                 {
2017                                 if (*p == ':')
2018                                         {
2019                                         BIO_write(bio,space,15-j%25);
2020                                         i++;
2021                                         j=0;
2022                                         BIO_write(bio,((i%3)?" ":"\n"),1);
2023                                         }
2024                                 else
2025                                         {
2026                                         BIO_write(bio,p,1);
2027                                         j++;
2028                                         }
2029                                 p++;
2030                                 }
2031                         BIO_write(bio,"\n",1);
2032                         }
2033
2034                 ssl_print_sigalgs(bio, s);
2035
2036                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
2037                         BIO_number_read(SSL_get_rbio(s)),
2038                         BIO_number_written(SSL_get_wbio(s)));
2039                 }
2040         BIO_printf(bio,(SSL_cache_hit(s)?"---\nReused, ":"---\nNew, "));
2041         c=SSL_get_current_cipher(s);
2042         BIO_printf(bio,"%s, Cipher is %s\n",
2043                 SSL_CIPHER_get_version(c),
2044                 SSL_CIPHER_get_name(c));
2045         if (peer != NULL) {
2046                 EVP_PKEY *pktmp;
2047                 pktmp = X509_get_pubkey(peer);
2048                 BIO_printf(bio,"Server public key is %d bit\n",
2049                                                          EVP_PKEY_bits(pktmp));
2050                 EVP_PKEY_free(pktmp);
2051         }
2052         BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
2053                         SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
2054 #ifndef OPENSSL_NO_COMP
2055         comp=SSL_get_current_compression(s);
2056         expansion=SSL_get_current_expansion(s);
2057         BIO_printf(bio,"Compression: %s\n",
2058                 comp ? SSL_COMP_get_name(comp) : "NONE");
2059         BIO_printf(bio,"Expansion: %s\n",
2060                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
2061 #endif
2062
2063 #ifdef SSL_DEBUG
2064         {
2065         /* Print out local port of connection: useful for debugging */
2066         int sock;
2067         struct sockaddr_in ladd;
2068         socklen_t ladd_size = sizeof(ladd);
2069         sock = SSL_get_fd(s);
2070         getsockname(sock, (struct sockaddr *)&ladd, &ladd_size);
2071         BIO_printf(bio_c_out, "LOCAL PORT is %u\n", ntohs(ladd.sin_port));
2072         }
2073 #endif
2074
2075 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2076         if (next_proto.status != -1) {
2077                 const unsigned char *proto;
2078                 unsigned int proto_len;
2079                 SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
2080                 BIO_printf(bio, "Next protocol: (%d) ", next_proto.status);
2081                 BIO_write(bio, proto, proto_len);
2082                 BIO_write(bio, "\n", 1);
2083         }
2084 #endif
2085
2086         {
2087         SRTP_PROTECTION_PROFILE *srtp_profile=SSL_get_selected_srtp_profile(s);
2088
2089         if(srtp_profile)
2090                 BIO_printf(bio,"SRTP Extension negotiated, profile=%s\n",
2091                            srtp_profile->name);
2092         }
2093
2094         SSL_SESSION_print(bio,SSL_get_session(s));
2095         if (keymatexportlabel != NULL)
2096                 {
2097                 BIO_printf(bio, "Keying material exporter:\n");
2098                 BIO_printf(bio, "    Label: '%s'\n", keymatexportlabel);
2099                 BIO_printf(bio, "    Length: %i bytes\n", keymatexportlen);
2100                 exportedkeymat = OPENSSL_malloc(keymatexportlen);
2101                 if (exportedkeymat != NULL)
2102                         {
2103                         if (!SSL_export_keying_material(s, exportedkeymat,
2104                                                         keymatexportlen,
2105                                                         keymatexportlabel,
2106                                                         strlen(keymatexportlabel),
2107                                                         NULL, 0, 0))
2108                                 {
2109                                 BIO_printf(bio, "    Error\n");
2110                                 }
2111                         else
2112                                 {
2113                                 BIO_printf(bio, "    Keying material: ");
2114                                 for (i=0; i<keymatexportlen; i++)
2115                                         BIO_printf(bio, "%02X",
2116                                                    exportedkeymat[i]);
2117                                 BIO_printf(bio, "\n");
2118                                 }
2119                         OPENSSL_free(exportedkeymat);
2120                         }
2121                 }
2122         BIO_printf(bio,"---\n");
2123         if (peer != NULL)
2124                 X509_free(peer);
2125         /* flush, or debugging output gets mixed with http response */
2126         (void)BIO_flush(bio);
2127         }
2128
2129 #ifndef OPENSSL_NO_TLSEXT
2130
2131 static int ocsp_resp_cb(SSL *s, void *arg)
2132         {
2133         const unsigned char *p;
2134         int len;
2135         OCSP_RESPONSE *rsp;
2136         len = SSL_get_tlsext_status_ocsp_resp(s, &p);
2137         BIO_puts(arg, "OCSP response: ");
2138         if (!p)
2139                 {
2140                 BIO_puts(arg, "no response sent\n");
2141                 return 1;
2142                 }
2143         rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
2144         if (!rsp)
2145                 {
2146                 BIO_puts(arg, "response parse error\n");
2147                 BIO_dump_indent(arg, (char *)p, len, 4);
2148                 return 0;
2149                 }
2150         BIO_puts(arg, "\n======================================\n");
2151         OCSP_RESPONSE_print(arg, rsp, 0);
2152         BIO_puts(arg, "======================================\n");
2153         OCSP_RESPONSE_free(rsp);
2154         return 1;
2155         }
2156
2157 static int audit_proof_cb(SSL *s, void *arg)
2158         {
2159         const unsigned char *proof;
2160         size_t proof_len;
2161         size_t i;
2162         SSL_SESSION *sess = SSL_get_session(s);
2163
2164         proof = SSL_SESSION_get_tlsext_authz_server_audit_proof(sess,
2165                                                                 &proof_len);
2166         if (proof != NULL)
2167                 {
2168                 BIO_printf(bio_c_out, "Audit proof: ");
2169                 for (i = 0; i < proof_len; ++i)
2170                         BIO_printf(bio_c_out, "%02X", proof[i]);
2171                 BIO_printf(bio_c_out, "\n");
2172                 }
2173         else
2174                 {
2175                 BIO_printf(bio_c_out, "No audit proof found.\n");
2176                 }
2177         return 1;
2178         }
2179 #endif