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 BIO *bio_c_msg=NULL;
 221 static int c_quiet=0;
 222 static int c_ign_eof=0;
 223
 224 #ifndef OPENSSL_NO_PSK
 225 /* Default PSK identity and key */
 226 static char *psk_identity="Client_identity";
 227 /*char *psk_key=NULL;  by default PSK is not used */
 228
 229 static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity,
 230         unsigned int max_identity_len, unsigned char *psk,
 231         unsigned int max_psk_len)
 232         {
 233         unsigned int psk_len = 0;
 234         int ret;
 235         BIGNUM *bn=NULL;
 236
 237         if (c_debug)
 238                 BIO_printf(bio_c_out, "psk_client_cb\n");
 239         if (!hint)
 240                 {
 241                 /* no ServerKeyExchange message*/
 242                 if (c_debug)
 243                         BIO_printf(bio_c_out,"NULL received PSK identity hint, continuing anyway\n");
 244                 }
 245         else if (c_debug)
 246                 BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint);
 247
 248         /* lookup PSK identity and PSK key based on the given identity hint here */
 249         ret = BIO_snprintf(identity, max_identity_len, "%s", psk_identity);
 250         if (ret < 0 || (unsigned int)ret > max_identity_len)
 251                 goto out_err;
 252         if (c_debug)
 253                 BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity, ret);
 254         ret=BN_hex2bn(&bn, psk_key);
 255         if (!ret)
 256                 {
 257                 BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
 258                 if (bn)
 259                         BN_free(bn);
 260                 return 0;
 261                 }
 262
 263         if ((unsigned int)BN_num_bytes(bn) > max_psk_len)
 264                 {
 265                 BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
 266                         max_psk_len, BN_num_bytes(bn));
 267                 BN_free(bn);
 268                 return 0;
 269                 }
 270
 271         psk_len=BN_bn2bin(bn, psk);
 272         BN_free(bn);
 273         if (psk_len == 0)
 274                 goto out_err;
 275
 276         if (c_debug)
 277                 BIO_printf(bio_c_out, "created PSK len=%d\n", psk_len);
 278
 279         return psk_len;
 280  out_err:
 281         if (c_debug)
 282                 BIO_printf(bio_err, "Error in PSK client callback\n");
 283         return 0;
 284         }
 285 #endif
 286
 287 static void sc_usage(void)
 288         {
 289         BIO_printf(bio_err,"usage: s_client args\n");
 290         BIO_printf(bio_err,"\n");
 291         BIO_printf(bio_err," -host host     - use -connect instead\n");
 292         BIO_printf(bio_err," -port port     - use -connect instead\n");
 293         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 294
 295         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 296         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 297         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
 298         BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
 299         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 300         BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
 301         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
 302         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 303         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 304         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 305         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 306         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 307         BIO_printf(bio_err," -debug        - extra output\n");
 308 #ifdef WATT32
 309         BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
 310 #endif
 311         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 312         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 313         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 314 #ifdef FIONBIO
 315         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 316 #endif
 317         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 318         BIO_printf(bio_err," -quiet        - no s_client output\n");
 319         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 320         BIO_printf(bio_err," -no_ign_eof   - don't ignore input eof\n");
 321 #ifndef OPENSSL_NO_PSK
 322         BIO_printf(bio_err," -psk_identity arg - PSK identity\n");
 323         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
 324 # ifndef OPENSSL_NO_JPAKE
 325         BIO_printf(bio_err," -jpake arg    - JPAKE secret to use\n");
 326 # endif
 327 #endif
 328 #ifndef OPENSSL_NO_SRP
 329         BIO_printf(bio_err," -srpuser user     - SRP authentification for 'user'\n");
 330         BIO_printf(bio_err," -srppass arg      - password for 'user'\n");
 331         BIO_printf(bio_err," -srp_lateuser     - SRP username into second ClientHello message\n");
 332         BIO_printf(bio_err," -srp_moregroups   - Tolerate other than the known g N values.\n");
 333         BIO_printf(bio_err," -srp_strength int - minimal mength in bits for N (default %d).\n",SRP_MINIMAL_N);
 334 #endif
 335         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 336         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 337         BIO_printf(bio_err," -tls1_2       - just use TLSv1.2\n");
 338         BIO_printf(bio_err," -tls1_1       - just use TLSv1.1\n");
 339         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 340         BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");
 341         BIO_printf(bio_err," -mtu          - set the link layer MTU\n");
 342         BIO_printf(bio_err," -no_tls1_2/-no_tls1_1/-no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 343         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 344         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 345         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 346         BIO_printf(bio_err,"                 command to see what is available\n");
 347         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
 348         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
 349         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
 350         BIO_printf(bio_err,"                 only \"smtp\", \"pop3\", \"imap\", \"ftp\" and \"xmpp\"\n");
 351         BIO_printf(bio_err,"                 are supported.\n");
 352 #ifndef OPENSSL_NO_ENGINE
 353         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 354 #endif
 355         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 356         BIO_printf(bio_err," -sess_out arg - file to write SSL session to\n");
 357         BIO_printf(bio_err," -sess_in arg  - file to read SSL session from\n");
 358 #ifndef OPENSSL_NO_TLSEXT
 359         BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
 360         BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
 361         BIO_printf(bio_err," -status           - request certificate status from server\n");
 362         BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
 363         BIO_printf(bio_err," -proof_debug      - request an audit proof and print its hex dump\n");
 364 # ifndef OPENSSL_NO_NEXTPROTONEG
 365         BIO_printf(bio_err," -nextprotoneg arg - enable NPN extension, considering named protocols supported (comma-separated list)\n");
 366 # endif
 367 #endif
 368         BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
 369         BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
 370         BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
 371         BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
 372         }
 373
 374 #ifndef OPENSSL_NO_TLSEXT
 375
 376 /* This is a context that we pass to callbacks */
 377 typedef struct tlsextctx_st {
 378    BIO * biodebug;
 379    int ack;
 380 } tlsextctx;
 381
 382
 383 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
 384         {
 385         tlsextctx * p = (tlsextctx *) arg;
 386         const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
 387         if (SSL_get_servername_type(s) != -1)
 388                 p->ack = !SSL_session_reused(s) && hn != NULL;
 389         else
 390                 BIO_printf(bio_err,"Can't use SSL_get_servername\n");
 391
 392         return SSL_TLSEXT_ERR_OK;
 393         }
 394
 395 #ifndef OPENSSL_NO_SRP
 396
 397 /* This is a context that we pass to all callbacks */
 398 typedef struct srp_arg_st
 399         {
 400         char *srppassin;
 401         char *srplogin;
 402         int msg;   /* copy from c_msg */
 403         int debug; /* copy from c_debug */
 404         int amp;   /* allow more groups */
 405         int strength /* minimal size for N */ ;
 406         } SRP_ARG;
 407
 408 #define SRP_NUMBER_ITERATIONS_FOR_PRIME 64
 409
 410 static int srp_Verify_N_and_g(BIGNUM *N, BIGNUM *g)
 411         {
 412         BN_CTX *bn_ctx = BN_CTX_new();
 413         BIGNUM *p = BN_new();
 414         BIGNUM *r = BN_new();
 415         int ret =
 416                 g != NULL && N != NULL && bn_ctx != NULL && BN_is_odd(N) &&
 417                 BN_is_prime_ex(N, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
 418                 p != NULL && BN_rshift1(p, N) &&
 419
 420                 /* p = (N-1)/2 */
 421                 BN_is_prime_ex(p, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
 422                 r != NULL &&
 423
 424                 /* verify g^((N-1)/2) == -1 (mod N) */
 425                 BN_mod_exp(r, g, p, N, bn_ctx) &&
 426                 BN_add_word(r, 1) &&
 427                 BN_cmp(r, N) == 0;
 428
 429         if(r)
 430                 BN_free(r);
 431         if(p)
 432                 BN_free(p);
 433         if(bn_ctx)
 434                 BN_CTX_free(bn_ctx);
 435         return ret;
 436         }
 437
 438 /* This callback is used here for two purposes:
 439    - extended debugging
 440    - making some primality tests for unknown groups
 441    The callback is only called for a non default group.
 442
 443    An application does not need the call back at all if
 444    only the stanard groups are used.  In real life situations,
 445    client and server already share well known groups,
 446    thus there is no need to verify them.
 447    Furthermore, in case that a server actually proposes a group that
 448    is not one of those defined in RFC 5054, it is more appropriate
 449    to add the group to a static list and then compare since
 450    primality tests are rather cpu consuming.
 451 */
 452
 453 static int MS_CALLBACK ssl_srp_verify_param_cb(SSL *s, void *arg)
 454         {
 455         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 456         BIGNUM *N = NULL, *g = NULL;
 457         if (!(N = SSL_get_srp_N(s)) || !(g = SSL_get_srp_g(s)))
 458                 return 0;
 459         if (srp_arg->debug || srp_arg->msg || srp_arg->amp == 1)
 460                 {
 461                 BIO_printf(bio_err, "SRP parameters:\n");
 462                 BIO_printf(bio_err,"\tN="); BN_print(bio_err,N);
 463                 BIO_printf(bio_err,"\n\tg="); BN_print(bio_err,g);
 464                 BIO_printf(bio_err,"\n");
 465                 }
 466
 467         if (SRP_check_known_gN_param(g,N))
 468                 return 1;
 469
 470         if (srp_arg->amp == 1)
 471                 {
 472                 if (srp_arg->debug)
 473                         BIO_printf(bio_err, "SRP param N and g are not known params, going to check deeper.\n");
 474
 475 /* The srp_moregroups is a real debugging feature.
 476    Implementors should rather add the value to the known ones.
 477    The minimal size has already been tested.
 478 */
 479                 if (BN_num_bits(g) <= BN_BITS && srp_Verify_N_and_g(N,g))
 480                         return 1;
 481                 }
 482         BIO_printf(bio_err, "SRP param N and g rejected.\n");
 483         return 0;
 484         }
 485
 486 #define PWD_STRLEN 1024
 487
 488 static char * MS_CALLBACK ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
 489         {
 490         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 491         char *pass = (char *)OPENSSL_malloc(PWD_STRLEN+1);
 492         PW_CB_DATA cb_tmp;
 493         int l;
 494
 495         cb_tmp.password = (char *)srp_arg->srppassin;
 496         cb_tmp.prompt_info = "SRP user";
 497         if ((l = password_callback(pass, PWD_STRLEN, 0, &cb_tmp))<0)
 498                 {
 499                 BIO_printf (bio_err, "Can't read Password\n");
 500                 OPENSSL_free(pass);
 501                 return NULL;
 502                 }
 503         *(pass+l)= '\0';
 504
 505         return pass;
 506         }
 507
 508 #endif
 509         char *srtp_profiles = NULL;
 510
 511 # ifndef OPENSSL_NO_NEXTPROTONEG
 512 /* This the context that we pass to next_proto_cb */
 513 typedef struct tlsextnextprotoctx_st {
 514         unsigned char *data;
 515         unsigned short len;
 516         int status;
 517 } tlsextnextprotoctx;
 518
 519 static tlsextnextprotoctx next_proto;
 520
 521 static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
 522         {
 523         tlsextnextprotoctx *ctx = arg;
 524
 525         if (!c_quiet)
 526                 {
 527                 /* We can assume that |in| is syntactically valid. */
 528                 unsigned i;
 529                 BIO_printf(bio_c_out, "Protocols advertised by server: ");
 530                 for (i = 0; i < inlen; )
 531                         {
 532                         if (i)
 533                                 BIO_write(bio_c_out, ", ", 2);
 534                         BIO_write(bio_c_out, &in[i + 1], in[i]);
 535                         i += in[i] + 1;
 536                         }
 537                 BIO_write(bio_c_out, "\n", 1);
 538                 }
 539
 540         ctx->status = SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len);
 541         return SSL_TLSEXT_ERR_OK;
 542         }
 543 # endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
 544 #endif
 545
 546 enum
 547 {
 548         PROTO_OFF       = 0,
 549         PROTO_SMTP,
 550         PROTO_POP3,
 551         PROTO_IMAP,
 552         PROTO_FTP,
 553         PROTO_XMPP
 554 };
 555
 556 int MAIN(int, char **);
 557
 558 int MAIN(int argc, char **argv)
 559         {
 560         int build_chain = 0;
 561         SSL *con=NULL;
 562 #ifndef OPENSSL_NO_KRB5
 563         KSSL_CTX *kctx;
 564 #endif
 565         int s,k,width,state=0;
 566         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
 567         int cbuf_len,cbuf_off;
 568         int sbuf_len,sbuf_off;
 569         fd_set readfds,writefds;
 570         short port=PORT;
 571         int full_log=1;
 572         char *host=SSL_HOST_NAME;
 573         char *cert_file=NULL,*key_file=NULL;
 574         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
 575         char *passarg = NULL, *pass = NULL;
 576         X509 *cert = NULL;
 577         EVP_PKEY *key = NULL;
 578         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 579         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE;
 580         int crlf=0;
 581         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 582         SSL_CTX *ctx=NULL;
 583         int ret=1,in_init=1,i,nbio_test=0;
 584         int starttls_proto = PROTO_OFF;
 585         int prexit = 0;
 586         X509_VERIFY_PARAM *vpm = NULL;
 587         int badarg = 0;
 588         const SSL_METHOD *meth=NULL;
 589         int socket_type=SOCK_STREAM;
 590         BIO *sbio;
 591         char *inrand=NULL;
 592         int mbuf_len=0;
 593         struct timeval timeout, *timeoutp;
 594 #ifndef OPENSSL_NO_ENGINE
 595         char *engine_id=NULL;
 596         char *ssl_client_engine_id=NULL;
 597         ENGINE *ssl_client_engine=NULL;
 598 #endif
 599         ENGINE *e=NULL;
 600 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
 601         struct timeval tv;
 602 #if defined(OPENSSL_SYS_BEOS_R5)
 603         int stdin_set = 0;
 604 #endif
 605 #endif
 606 #ifndef OPENSSL_NO_TLSEXT
 607         char *servername = NULL;
 608         tlsextctx tlsextcbp =
 609         {NULL,0};
 610 # ifndef OPENSSL_NO_NEXTPROTONEG
 611         const char *next_proto_neg_in = NULL;
 612 # endif
 613 #endif
 614         char *sess_in = NULL;
 615         char *sess_out = NULL;
 616         struct sockaddr peer;
 617         int peerlen = sizeof(peer);
 618         int enable_timeouts = 0 ;
 619         long socket_mtu = 0;
 620 #ifndef OPENSSL_NO_JPAKE
 621 static char *jpake_secret = NULL;
 622 #define no_jpake !jpake_secret
 623 #else
 624 #define no_jpake 1
 625 #endif
 626 #ifndef OPENSSL_NO_SRP
 627         char * srppass = NULL;
 628         int srp_lateuser = 0;
 629         SRP_ARG srp_arg = {NULL,NULL,0,0,0,1024};
 630 #endif
 631         SSL_EXCERT *exc = NULL;
 632
 633         SSL_CONF_CTX *cctx = NULL;
 634         STACK_OF(OPENSSL_STRING) *ssl_args = NULL;
 635
 636         meth=SSLv23_client_method();
 637
 638         apps_startup();
 639         c_Pause=0;
 640         c_quiet=0;
 641         c_ign_eof=0;
 642         c_debug=0;
 643         c_msg=0;
 644         c_showcerts=0;
 645
 646         if (bio_err == NULL)
 647                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 648
 649         if (!load_config(bio_err, NULL))
 650                 goto end;
 651
 652         cctx = SSL_CONF_CTX_new();
 653         if (!cctx)
 654                 goto end;
 655         SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CLIENT);
 656         SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CMDLINE);
 657
 658         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 659                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 660                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 661                 {
 662                 BIO_printf(bio_err,"out of memory\n");
 663                 goto end;
 664                 }
 665
 666         verify_depth=0;
 667         verify_error=X509_V_OK;
 668 #ifdef FIONBIO
 669         c_nbio=0;
 670 #endif
 671
 672         argc--;
 673         argv++;
 674         while (argc >= 1)
 675                 {
 676                 if      (strcmp(*argv,"-host") == 0)
 677                         {
 678                         if (--argc < 1) goto bad;
 679                         host= *(++argv);
 680                         }
 681                 else if (strcmp(*argv,"-port") == 0)
 682                         {
 683                         if (--argc < 1) goto bad;
 684                         port=atoi(*(++argv));
 685                         if (port == 0) goto bad;
 686                         }
 687                 else if (strcmp(*argv,"-connect") == 0)
 688                         {
 689                         if (--argc < 1) goto bad;
 690                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 691                                 goto bad;
 692                         }
 693                 else if (strcmp(*argv,"-verify") == 0)
 694                         {
 695                         verify=SSL_VERIFY_PEER;
 696                         if (--argc < 1) goto bad;
 697                         verify_depth=atoi(*(++argv));
 698                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 699                         }
 700                 else if (strcmp(*argv,"-cert") == 0)
 701                         {
 702                         if (--argc < 1) goto bad;
 703                         cert_file= *(++argv);
 704                         }
 705                 else if (strcmp(*argv,"-sess_out") == 0)
 706                         {
 707                         if (--argc < 1) goto bad;
 708                         sess_out = *(++argv);
 709                         }
 710                 else if (strcmp(*argv,"-sess_in") == 0)
 711                         {
 712                         if (--argc < 1) goto bad;
 713                         sess_in = *(++argv);
 714                         }
 715                 else if (strcmp(*argv,"-certform") == 0)
 716                         {
 717                         if (--argc < 1) goto bad;
 718                         cert_format = str2fmt(*(++argv));
 719                         }
 720                 else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm))
 721                         {
 722                         if (badarg)
 723                                 goto bad;
 724                         continue;
 725                         }
 726                 else if (strcmp(*argv,"-verify_return_error") == 0)
 727                         verify_return_error = 1;
 728                 else if (args_excert(&argv, &argc, &badarg, bio_err, &exc))
 729                         {
 730                         if (badarg)
 731                                 goto bad;
 732                         continue;
 733                         }
 734                 else if (args_ssl(&argv, &argc, cctx, &badarg, bio_err, &ssl_args))
 735                         {
 736                         if (badarg)
 737                                 goto bad;
 738                         continue;
 739                         }
 740                 else if (strcmp(*argv,"-prexit") == 0)
 741                         prexit=1;
 742                 else if (strcmp(*argv,"-crlf") == 0)
 743                         crlf=1;
 744                 else if (strcmp(*argv,"-quiet") == 0)
 745                         {
 746                         c_quiet=1;
 747                         c_ign_eof=1;
 748                         }
 749                 else if (strcmp(*argv,"-ign_eof") == 0)
 750                         c_ign_eof=1;
 751                 else if (strcmp(*argv,"-no_ign_eof") == 0)
 752                         c_ign_eof=0;
 753                 else if (strcmp(*argv,"-pause") == 0)
 754                         c_Pause=1;
 755                 else if (strcmp(*argv,"-debug") == 0)
 756                         c_debug=1;
 757 #ifndef OPENSSL_NO_TLSEXT
 758                 else if (strcmp(*argv,"-tlsextdebug") == 0)
 759                         c_tlsextdebug=1;
 760                 else if (strcmp(*argv,"-status") == 0)
 761                         c_status_req=1;
 762                 else if (strcmp(*argv,"-proof_debug") == 0)
 763                         c_proof_debug=1;
 764 #endif
 765 #ifdef WATT32
 766                 else if (strcmp(*argv,"-wdebug") == 0)
 767                         dbug_init();
 768 #endif
 769                 else if (strcmp(*argv,"-msg") == 0)
 770                         c_msg=1;
 771                 else if (strcmp(*argv,"-msgfile") == 0)
 772                         {
 773                         if (--argc < 1) goto bad;
 774                         bio_c_msg = BIO_new_file(*(++argv), "w");
 775                         }
 776 #ifndef OPENSSL_NO_SSL_TRACE
 777                 else if (strcmp(*argv,"-trace") == 0)
 778                         c_msg=2;
 779 #endif
 780                 else if (strcmp(*argv,"-showcerts") == 0)
 781                         c_showcerts=1;
 782                 else if (strcmp(*argv,"-nbio_test") == 0)
 783                         nbio_test=1;
 784                 else if (strcmp(*argv,"-state") == 0)
 785                         state=1;
 786 #ifndef OPENSSL_NO_PSK
 787                 else if (strcmp(*argv,"-psk_identity") == 0)
 788                         {
 789                         if (--argc < 1) goto bad;
 790                         psk_identity=*(++argv);
 791                         }
 792                 else if (strcmp(*argv,"-psk") == 0)
 793                         {
 794                         size_t j;
 795
 796                         if (--argc < 1) goto bad;
 797                         psk_key=*(++argv);
 798                         for (j = 0; j < strlen(psk_key); j++)
 799                                 {
 800                                 if (isxdigit((unsigned char)psk_key[j]))
 801                                         continue;
 802                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
 803                                 goto bad;
 804                                 }
 805                         }
 806 #endif
 807 #ifndef OPENSSL_NO_SRP
 808                 else if (strcmp(*argv,"-srpuser") == 0)
 809                         {
 810                         if (--argc < 1) goto bad;
 811                         srp_arg.srplogin= *(++argv);
 812                         meth=TLSv1_client_method();
 813                         }
 814                 else if (strcmp(*argv,"-srppass") == 0)
 815                         {
 816                         if (--argc < 1) goto bad;
 817                         srppass= *(++argv);
 818                         meth=TLSv1_client_method();
 819                         }
 820                 else if (strcmp(*argv,"-srp_strength") == 0)
 821                         {
 822                         if (--argc < 1) goto bad;
 823                         srp_arg.strength=atoi(*(++argv));
 824                         BIO_printf(bio_err,"SRP minimal length for N is %d\n",srp_arg.strength);
 825                         meth=TLSv1_client_method();
 826                         }
 827                 else if (strcmp(*argv,"-srp_lateuser") == 0)
 828                         {
 829                         srp_lateuser= 1;
 830                         meth=TLSv1_client_method();
 831                         }
 832                 else if (strcmp(*argv,"-srp_moregroups") == 0)
 833                         {
 834                         srp_arg.amp=1;
 835                         meth=TLSv1_client_method();
 836                         }
 837 #endif
 838 #ifndef OPENSSL_NO_SSL2
 839                 else if (strcmp(*argv,"-ssl2") == 0)
 840                         meth=SSLv2_client_method();
 841 #endif
 842 #ifndef OPENSSL_NO_SSL3
 843                 else if (strcmp(*argv,"-ssl3") == 0)
 844                         meth=SSLv3_client_method();
 845 #endif
 846 #ifndef OPENSSL_NO_TLS1
 847                 else if (strcmp(*argv,"-tls1_2") == 0)
 848                         meth=TLSv1_2_client_method();
 849                 else if (strcmp(*argv,"-tls1_1") == 0)
 850                         meth=TLSv1_1_client_method();
 851                 else if (strcmp(*argv,"-tls1") == 0)
 852                         meth=TLSv1_client_method();
 853 #endif
 854 #ifndef OPENSSL_NO_DTLS1
 855                 else if (strcmp(*argv,"-dtls1") == 0)
 856                         {
 857                         meth=DTLSv1_client_method();
 858                         socket_type=SOCK_DGRAM;
 859                         }
 860                 else if (strcmp(*argv,"-timeout") == 0)
 861                         enable_timeouts=1;
 862                 else if (strcmp(*argv,"-mtu") == 0)
 863                         {
 864                         if (--argc < 1) goto bad;
 865                         socket_mtu = atol(*(++argv));
 866                         }
 867 #endif
 868                 else if (strcmp(*argv,"-keyform") == 0)
 869                         {
 870                         if (--argc < 1) goto bad;
 871                         key_format = str2fmt(*(++argv));
 872                         }
 873                 else if (strcmp(*argv,"-pass") == 0)
 874                         {
 875                         if (--argc < 1) goto bad;
 876                         passarg = *(++argv);
 877                         }
 878                 else if (strcmp(*argv,"-key") == 0)
 879                         {
 880                         if (--argc < 1) goto bad;
 881                         key_file= *(++argv);
 882                         }
 883                 else if (strcmp(*argv,"-reconnect") == 0)
 884                         {
 885                         reconnect=5;
 886                         }
 887                 else if (strcmp(*argv,"-CApath") == 0)
 888                         {
 889                         if (--argc < 1) goto bad;
 890                         CApath= *(++argv);
 891                         }
 892                 else if (strcmp(*argv,"-build_chain") == 0)
 893                         build_chain = 1;
 894                 else if (strcmp(*argv,"-CAfile") == 0)
 895                         {
 896                         if (--argc < 1) goto bad;
 897                         CAfile= *(++argv);
 898                         }
 899 #ifndef OPENSSL_NO_TLSEXT
 900 # ifndef OPENSSL_NO_NEXTPROTONEG
 901                 else if (strcmp(*argv,"-nextprotoneg") == 0)
 902                         {
 903                         if (--argc < 1) goto bad;
 904                         next_proto_neg_in = *(++argv);
 905                         }
 906 # endif
 907 #endif
 908 #ifdef FIONBIO
 909                 else if (strcmp(*argv,"-nbio") == 0)
 910                         { c_nbio=1; }
 911 #endif
 912                 else if (strcmp(*argv,"-starttls") == 0)
 913                         {
 914                         if (--argc < 1) goto bad;
 915                         ++argv;
 916                         if (strcmp(*argv,"smtp") == 0)
 917                                 starttls_proto = PROTO_SMTP;
 918                         else if (strcmp(*argv,"pop3") == 0)
 919                                 starttls_proto = PROTO_POP3;
 920                         else if (strcmp(*argv,"imap") == 0)
 921                                 starttls_proto = PROTO_IMAP;
 922                         else if (strcmp(*argv,"ftp") == 0)
 923                                 starttls_proto = PROTO_FTP;
 924                         else if (strcmp(*argv, "xmpp") == 0)
 925                                 starttls_proto = PROTO_XMPP;
 926                         else
 927                                 goto bad;
 928                         }
 929 #ifndef OPENSSL_NO_ENGINE
 930                 else if (strcmp(*argv,"-engine") == 0)
 931                         {
 932                         if (--argc < 1) goto bad;
 933                         engine_id = *(++argv);
 934                         }
 935                 else if (strcmp(*argv,"-ssl_client_engine") == 0)
 936                         {
 937                         if (--argc < 1) goto bad;
 938                         ssl_client_engine_id = *(++argv);
 939                         }
 940 #endif
 941                 else if (strcmp(*argv,"-rand") == 0)
 942                         {
 943                         if (--argc < 1) goto bad;
 944                         inrand= *(++argv);
 945                         }
 946 #ifndef OPENSSL_NO_TLSEXT
 947                 else if (strcmp(*argv,"-servername") == 0)
 948                         {
 949                         if (--argc < 1) goto bad;
 950                         servername= *(++argv);
 951                         /* meth=TLSv1_client_method(); */
 952                         }
 953 #endif
 954 #ifndef OPENSSL_NO_JPAKE
 955                 else if (strcmp(*argv,"-jpake") == 0)
 956                         {
 957                         if (--argc < 1) goto bad;
 958                         jpake_secret = *++argv;
 959                         }
 960 #endif
 961                 else if (strcmp(*argv,"-use_srtp") == 0)
 962                         {
 963                         if (--argc < 1) goto bad;
 964                         srtp_profiles = *(++argv);
 965                         }
 966                 else if (strcmp(*argv,"-keymatexport") == 0)
 967                         {
 968                         if (--argc < 1) goto bad;
 969                         keymatexportlabel= *(++argv);
 970                         }
 971                 else if (strcmp(*argv,"-keymatexportlen") == 0)
 972                         {
 973                         if (--argc < 1) goto bad;
 974                         keymatexportlen=atoi(*(++argv));
 975                         if (keymatexportlen == 0) goto bad;
 976                         }
 977                 else
 978                         {
 979                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 980                         badop=1;
 981                         break;
 982                         }
 983                 argc--;
 984                 argv++;
 985                 }
 986         if (badop)
 987                 {
 988 bad:
 989                 sc_usage();
 990                 goto end;
 991                 }
 992
 993 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
 994         if (jpake_secret)
 995                 {
 996                 if (psk_key)
 997                         {
 998                         BIO_printf(bio_err,
 999                                    "Can't use JPAKE and PSK together\n");
1000                         goto end;
1001                         }
1002                 psk_identity = "JPAKE";
1003                 }
1004 #endif
1005
1006         OpenSSL_add_ssl_algorithms();
1007         SSL_load_error_strings();
1008
1009 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1010         next_proto.status = -1;
1011         if (next_proto_neg_in)
1012                 {
1013                 next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
1014                 if (next_proto.data == NULL)
1015                         {
1016                         BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
1017                         goto end;
1018                         }
1019                 }
1020         else
1021                 next_proto.data = NULL;
1022 #endif
1023
1024 #ifndef OPENSSL_NO_ENGINE
1025         e = setup_engine(bio_err, engine_id, 1);
1026         if (ssl_client_engine_id)
1027                 {
1028                 ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
1029                 if (!ssl_client_engine)
1030                         {
1031                         BIO_printf(bio_err,
1032                                         "Error getting client auth engine\n");
1033                         goto end;
1034                         }
1035                 }
1036
1037 #endif
1038         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
1039                 {
1040                 BIO_printf(bio_err, "Error getting password\n");
1041                 goto end;
1042                 }
1043
1044         if (key_file == NULL)
1045                 key_file = cert_file;
1046
1047
1048         if (key_file)
1049
1050                 {
1051
1052                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
1053                                "client certificate private key file");
1054                 if (!key)
1055                         {
1056                         ERR_print_errors(bio_err);
1057                         goto end;
1058                         }
1059
1060                 }
1061
1062         if (cert_file)
1063
1064                 {
1065                 cert = load_cert(bio_err,cert_file,cert_format,
1066                                 NULL, e, "client certificate file");
1067
1068                 if (!cert)
1069                         {
1070                         ERR_print_errors(bio_err);
1071                         goto end;
1072                         }
1073                 }
1074
1075         if (!load_excert(&exc, bio_err))
1076                 goto end;
1077
1078         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1079                 && !RAND_status())
1080                 {
1081                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1082                 }
1083         if (inrand != NULL)
1084                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1085                         app_RAND_load_files(inrand));
1086
1087         if (bio_c_out == NULL)
1088                 {
1089                 if (c_quiet && !c_debug)
1090                         {
1091                         bio_c_out=BIO_new(BIO_s_null());
1092                         if (c_msg && !bio_c_msg)
1093                                 bio_c_msg=BIO_new_fp(stdout,BIO_NOCLOSE);
1094                         }
1095                 else
1096                         {
1097                         if (bio_c_out == NULL)
1098                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1099                         }
1100                 }
1101
1102 #ifndef OPENSSL_NO_SRP
1103         if(!app_passwd(bio_err, srppass, NULL, &srp_arg.srppassin, NULL))
1104                 {
1105                 BIO_printf(bio_err, "Error getting password\n");
1106                 goto end;
1107                 }
1108 #endif
1109
1110         ctx=SSL_CTX_new(meth);
1111         if (ctx == NULL)
1112                 {
1113                 ERR_print_errors(bio_err);
1114                 goto end;
1115                 }
1116
1117         if (vpm)
1118                 SSL_CTX_set1_param(ctx, vpm);
1119
1120         if (!args_ssl_call(ctx, bio_err, cctx, ssl_args, 1, no_jpake))
1121                 {
1122                 ERR_print_errors(bio_err);
1123                 goto end;
1124                 }
1125
1126 #ifndef OPENSSL_NO_ENGINE
1127         if (ssl_client_engine)
1128                 {
1129                 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
1130                         {
1131                         BIO_puts(bio_err, "Error setting client auth engine\n");
1132                         ERR_print_errors(bio_err);
1133                         ENGINE_free(ssl_client_engine);
1134                         goto end;
1135                         }
1136                 ENGINE_free(ssl_client_engine);
1137                 }
1138 #endif
1139
1140 #ifndef OPENSSL_NO_PSK
1141 #ifdef OPENSSL_NO_JPAKE
1142         if (psk_key != NULL)
1143 #else
1144         if (psk_key != NULL || jpake_secret)
1145 #endif
1146                 {
1147                 if (c_debug)
1148                         BIO_printf(bio_c_out, "PSK key given or JPAKE in use, setting client callback\n");
1149                 SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
1150                 }
1151         if (srtp_profiles != NULL)
1152                 SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
1153 #endif
1154         if (exc) ssl_ctx_set_excert(ctx, exc);
1155         /* DTLS: partial reads end up discarding unread UDP bytes :-(
1156          * Setting read ahead solves this problem.
1157          */
1158         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1159
1160 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1161         if (next_proto.data)
1162                 SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
1163 #endif
1164
1165         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1166         if (cipher != NULL)
1167                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
1168                 BIO_printf(bio_err,"error setting cipher list\n");
1169                 ERR_print_errors(bio_err);
1170                 goto end;
1171         }
1172 #if 0
1173         else
1174                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
1175 #endif
1176
1177         SSL_CTX_set_verify(ctx,verify,verify_callback);
1178
1179         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1180                 (!SSL_CTX_set_default_verify_paths(ctx)))
1181                 {
1182                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
1183                 ERR_print_errors(bio_err);
1184                 /* goto end; */
1185                 }
1186
1187         if (!set_cert_key_stuff(ctx,cert,key, NULL, build_chain))
1188                 goto end;
1189
1190 #ifndef OPENSSL_NO_TLSEXT
1191         if (servername != NULL)
1192                 {
1193                 tlsextcbp.biodebug = bio_err;
1194                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1195                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1196                 }
1197 #ifndef OPENSSL_NO_SRP
1198         if (srp_arg.srplogin)
1199                 {
1200                 if (!srp_lateuser && !SSL_CTX_set_srp_username(ctx, srp_arg.srplogin))
1201                         {
1202                         BIO_printf(bio_err,"Unable to set SRP username\n");
1203                         goto end;
1204                         }
1205                 srp_arg.msg = c_msg;
1206                 srp_arg.debug = c_debug ;
1207                 SSL_CTX_set_srp_cb_arg(ctx,&srp_arg);
1208                 SSL_CTX_set_srp_client_pwd_callback(ctx, ssl_give_srp_client_pwd_cb);
1209                 SSL_CTX_set_srp_strength(ctx, srp_arg.strength);
1210                 if (c_msg || c_debug || srp_arg.amp == 0)
1211                         SSL_CTX_set_srp_verify_param_callback(ctx, ssl_srp_verify_param_cb);
1212                 }
1213
1214 #endif
1215         if (c_proof_debug)
1216                 SSL_CTX_set_tlsext_authz_server_audit_proof_cb(ctx,
1217                                                                audit_proof_cb);
1218 #endif
1219
1220         con=SSL_new(ctx);
1221         if (sess_in)
1222                 {
1223                 SSL_SESSION *sess;
1224                 BIO *stmp = BIO_new_file(sess_in, "r");
1225                 if (!stmp)
1226                         {
1227                         BIO_printf(bio_err, "Can't open session file %s\n",
1228                                                 sess_in);
1229                         ERR_print_errors(bio_err);
1230                         goto end;
1231                         }
1232                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
1233                 BIO_free(stmp);
1234                 if (!sess)
1235                         {
1236                         BIO_printf(bio_err, "Can't open session file %s\n",
1237                                                 sess_in);
1238                         ERR_print_errors(bio_err);
1239                         goto end;
1240                         }
1241                 SSL_set_session(con, sess);
1242                 SSL_SESSION_free(sess);
1243                 }
1244 #ifndef OPENSSL_NO_TLSEXT
1245         if (servername != NULL)
1246                 {
1247                 if (!SSL_set_tlsext_host_name(con,servername))
1248                         {
1249                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
1250                         ERR_print_errors(bio_err);
1251                         goto end;
1252                         }
1253                 }
1254 #endif
1255 #ifndef OPENSSL_NO_KRB5
1256         if (con  &&  (kctx = kssl_ctx_new()) != NULL)
1257                 {
1258                 SSL_set0_kssl_ctx(con, kctx);
1259                 kssl_ctx_setstring(kctx, KSSL_SERVER, host);
1260                 }
1261 #endif  /* OPENSSL_NO_KRB5  */
1262 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
1263 #if 0
1264 #ifdef TLSEXT_TYPE_opaque_prf_input
1265         SSL_set_tlsext_opaque_prf_input(con, "Test client", 11);
1266 #endif
1267 #endif
1268
1269 re_start:
1270
1271         if (init_client(&s,host,port,socket_type) == 0)
1272                 {
1273                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
1274                 SHUTDOWN(s);
1275                 goto end;
1276                 }
1277         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
1278
1279 #ifdef FIONBIO
1280         if (c_nbio)
1281                 {
1282                 unsigned long l=1;
1283                 BIO_printf(bio_c_out,"turning on non blocking io\n");
1284                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
1285                         {
1286                         ERR_print_errors(bio_err);
1287                         goto end;
1288                         }
1289                 }
1290 #endif
1291         if (c_Pause & 0x01) SSL_set_debug(con, 1);
1292
1293         if ( SSL_version(con) == DTLS1_VERSION)
1294                 {
1295
1296                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1297                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
1298                         {
1299                         BIO_printf(bio_err, "getsockname:errno=%d\n",
1300                                 get_last_socket_error());
1301                         SHUTDOWN(s);
1302                         goto end;
1303                         }
1304
1305                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
1306
1307                 if (enable_timeouts)
1308                         {
1309                         timeout.tv_sec = 0;
1310                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1311                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1312
1313                         timeout.tv_sec = 0;
1314                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1315                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1316                         }
1317
1318                 if (socket_mtu > 28)
1319                         {
1320                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1321                         SSL_set_mtu(con, socket_mtu - 28);
1322                         }
1323                 else
1324                         /* want to do MTU discovery */
1325                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1326                 }
1327         else
1328                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1329
1330         if (nbio_test)
1331                 {
1332                 BIO *test;
1333
1334                 test=BIO_new(BIO_f_nbio_test());
1335                 sbio=BIO_push(test,sbio);
1336                 }
1337
1338         if (c_debug)
1339                 {
1340                 SSL_set_debug(con, 1);
1341                 BIO_set_callback(sbio,bio_dump_callback);
1342                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
1343                 }
1344         if (c_msg)
1345                 {
1346 #ifndef OPENSSL_NO_SSL_TRACE
1347                 if (c_msg == 2)
1348                         SSL_set_msg_callback(con, SSL_trace);
1349                 else
1350 #endif
1351                         SSL_set_msg_callback(con, msg_cb);
1352                 SSL_set_msg_callback_arg(con, bio_c_msg ? bio_c_msg : bio_c_out);
1353                 }
1354 #ifndef OPENSSL_NO_TLSEXT
1355         if (c_tlsextdebug)
1356                 {
1357                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
1358                 SSL_set_tlsext_debug_arg(con, bio_c_out);
1359                 }
1360         if (c_status_req)
1361                 {
1362                 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
1363                 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
1364                 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
1365 #if 0
1366 {
1367 STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
1368 OCSP_RESPID *id = OCSP_RESPID_new();
1369 id->value.byKey = ASN1_OCTET_STRING_new();
1370 id->type = V_OCSP_RESPID_KEY;
1371 ASN1_STRING_set(id->value.byKey, "Hello World", -1);
1372 sk_OCSP_RESPID_push(ids, id);
1373 SSL_set_tlsext_status_ids(con, ids);
1374 }
1375 #endif
1376                 }
1377 #endif
1378 #ifndef OPENSSL_NO_JPAKE
1379         if (jpake_secret)
1380                 jpake_client_auth(bio_c_out, sbio, jpake_secret);
1381 #endif
1382
1383         SSL_set_bio(con,sbio,sbio);
1384         SSL_set_connect_state(con);
1385
1386         /* ok, lets connect */
1387         width=SSL_get_fd(con)+1;
1388
1389         read_tty=1;
1390         write_tty=0;
1391         tty_on=0;
1392         read_ssl=1;
1393         write_ssl=1;
1394
1395         cbuf_len=0;
1396         cbuf_off=0;
1397         sbuf_len=0;
1398         sbuf_off=0;
1399
1400         /* This is an ugly hack that does a lot of assumptions */
1401         /* We do have to handle multi-line responses which may come
1402            in a single packet or not. We therefore have to use
1403            BIO_gets() which does need a buffering BIO. So during
1404            the initial chitchat we do push a buffering BIO into the
1405            chain that is removed again later on to not disturb the
1406            rest of the s_client operation. */
1407         if (starttls_proto == PROTO_SMTP)
1408                 {
1409                 int foundit=0;
1410                 BIO *fbio = BIO_new(BIO_f_buffer());
1411                 BIO_push(fbio, sbio);
1412                 /* wait for multi-line response to end from SMTP */
1413                 do
1414                         {
1415                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1416                         }
1417                 while (mbuf_len>3 && mbuf[3]=='-');
1418                 /* STARTTLS command requires EHLO... */
1419                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
1420                 (void)BIO_flush(fbio);
1421                 /* wait for multi-line response to end EHLO SMTP response */
1422                 do
1423                         {
1424                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1425                         if (strstr(mbuf,"STARTTLS"))
1426                                 foundit=1;
1427                         }
1428                 while (mbuf_len>3 && mbuf[3]=='-');
1429                 (void)BIO_flush(fbio);
1430                 BIO_pop(fbio);
1431                 BIO_free(fbio);
1432                 if (!foundit)
1433                         BIO_printf(bio_err,
1434                                    "didn't found starttls in server response,"
1435                                    " try anyway...\n");
1436                 BIO_printf(sbio,"STARTTLS\r\n");
1437                 BIO_read(sbio,sbuf,BUFSIZZ);
1438                 }
1439         else if (starttls_proto == PROTO_POP3)
1440                 {
1441                 BIO_read(sbio,mbuf,BUFSIZZ);
1442                 BIO_printf(sbio,"STLS\r\n");
1443                 BIO_read(sbio,sbuf,BUFSIZZ);
1444                 }
1445         else if (starttls_proto == PROTO_IMAP)
1446                 {
1447                 int foundit=0;
1448                 BIO *fbio = BIO_new(BIO_f_buffer());
1449                 BIO_push(fbio, sbio);
1450                 BIO_gets(fbio,mbuf,BUFSIZZ);
1451                 /* STARTTLS command requires CAPABILITY... */
1452                 BIO_printf(fbio,". CAPABILITY\r\n");
1453                 (void)BIO_flush(fbio);
1454                 /* wait for multi-line CAPABILITY response */
1455                 do
1456                         {
1457                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1458                         if (strstr(mbuf,"STARTTLS"))
1459                                 foundit=1;
1460                         }
1461                 while (mbuf_len>3 && mbuf[0]!='.');
1462                 (void)BIO_flush(fbio);
1463                 BIO_pop(fbio);
1464                 BIO_free(fbio);
1465                 if (!foundit)
1466                         BIO_printf(bio_err,
1467                                    "didn't found STARTTLS in server response,"
1468                                    " try anyway...\n");
1469                 BIO_printf(sbio,". STARTTLS\r\n");
1470                 BIO_read(sbio,sbuf,BUFSIZZ);
1471                 }
1472         else if (starttls_proto == PROTO_FTP)
1473                 {
1474                 BIO *fbio = BIO_new(BIO_f_buffer());
1475                 BIO_push(fbio, sbio);
1476                 /* wait for multi-line response to end from FTP */
1477                 do
1478                         {
1479                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1480                         }
1481                 while (mbuf_len>3 && mbuf[3]=='-');
1482                 (void)BIO_flush(fbio);
1483                 BIO_pop(fbio);
1484                 BIO_free(fbio);
1485                 BIO_printf(sbio,"AUTH TLS\r\n");
1486                 BIO_read(sbio,sbuf,BUFSIZZ);
1487                 }
1488         if (starttls_proto == PROTO_XMPP)
1489                 {
1490                 int seen = 0;
1491                 BIO_printf(sbio,"<stream:stream "
1492                     "xmlns:stream='http://etherx.jabber.org/streams' "
1493                     "xmlns='jabber:client' to='%s' version='1.0'>", host);
1494                 seen = BIO_read(sbio,mbuf,BUFSIZZ);
1495                 mbuf[seen] = 0;
1496                 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
1497                         {
1498                         if (strstr(mbuf, "/stream:features>"))
1499                                 goto shut;
1500                         seen = BIO_read(sbio,mbuf,BUFSIZZ);
1501                         mbuf[seen] = 0;
1502                         }
1503                 BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1504                 seen = BIO_read(sbio,sbuf,BUFSIZZ);
1505                 sbuf[seen] = 0;
1506                 if (!strstr(sbuf, "<proceed"))
1507                         goto shut;
1508                 mbuf[0] = 0;
1509                 }
1510
1511         for (;;)
1512                 {
1513                 FD_ZERO(&readfds);
1514                 FD_ZERO(&writefds);
1515
1516                 if ((SSL_version(con) == DTLS1_VERSION) &&
1517                         DTLSv1_get_timeout(con, &timeout))
1518                         timeoutp = &timeout;
1519                 else
1520                         timeoutp = NULL;
1521
1522                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1523                         {
1524                         in_init=1;
1525                         tty_on=0;
1526                         }
1527                 else
1528                         {
1529                         tty_on=1;
1530                         if (in_init)
1531                                 {
1532                                 in_init=0;
1533 #if 0 /* This test doesn't really work as intended (needs to be fixed) */
1534 #ifndef OPENSSL_NO_TLSEXT
1535                                 if (servername != NULL && !SSL_session_reused(con))
1536                                         {
1537                                         BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
1538                                         }
1539 #endif
1540 #endif
1541                                 if (sess_out)
1542                                         {
1543                                         BIO *stmp = BIO_new_file(sess_out, "w");
1544                                         if (stmp)
1545                                                 {
1546                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1547                                                 BIO_free(stmp);
1548                                                 }
1549                                         else
1550                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1551                                         }
1552                                 print_stuff(bio_c_out,con,full_log);
1553                                 if (full_log > 0) full_log--;
1554
1555                                 if (starttls_proto)
1556                                         {
1557                                         BIO_printf(bio_err,"%s",mbuf);
1558                                         /* We don't need to know any more */
1559                                         starttls_proto = PROTO_OFF;
1560                                         }
1561
1562                                 if (reconnect)
1563                                         {
1564                                         reconnect--;
1565                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1566                                         SSL_shutdown(con);
1567                                         SSL_set_connect_state(con);
1568                                         SHUTDOWN(SSL_get_fd(con));
1569                                         goto re_start;
1570                                         }
1571                                 }
1572                         }
1573
1574                 ssl_pending = read_ssl && SSL_pending(con);
1575
1576                 if (!ssl_pending)
1577                         {
1578 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
1579                         if (tty_on)
1580                                 {
1581                                 if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
1582                                 if (write_tty) openssl_fdset(fileno(stdout),&writefds);
1583                                 }
1584                         if (read_ssl)
1585                                 openssl_fdset(SSL_get_fd(con),&readfds);
1586                         if (write_ssl)
1587                                 openssl_fdset(SSL_get_fd(con),&writefds);
1588 #else
1589                         if(!tty_on || !write_tty) {
1590                                 if (read_ssl)
1591                                         openssl_fdset(SSL_get_fd(con),&readfds);
1592                                 if (write_ssl)
1593                                         openssl_fdset(SSL_get_fd(con),&writefds);
1594                         }
1595 #endif
1596 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1597                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1598
1599                         /* Note: under VMS with SOCKETSHR the second parameter
1600                          * is currently of type (int *) whereas under other
1601                          * systems it is (void *) if you don't have a cast it
1602                          * will choke the compiler: if you do have a cast then
1603                          * you can either go for (int *) or (void *).
1604                          */
1605 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1606                         /* Under Windows/DOS we make the assumption that we can
1607                          * always write to the tty: therefore if we need to
1608                          * write to the tty we just fall through. Otherwise
1609                          * we timeout the select every second and see if there
1610                          * are any keypresses. Note: this is a hack, in a proper
1611                          * Windows application we wouldn't do this.
1612                          */
1613                         i=0;
1614                         if(!write_tty) {
1615                                 if(read_tty) {
1616                                         tv.tv_sec = 1;
1617                                         tv.tv_usec = 0;
1618                                         i=select(width,(void *)&readfds,(void *)&writefds,
1619                                                  NULL,&tv);
1620 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1621                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1622 #else
1623                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1624 #endif
1625                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1626                                          NULL,timeoutp);
1627                         }
1628 #elif defined(OPENSSL_SYS_NETWARE)
1629                         if(!write_tty) {
1630                                 if(read_tty) {
1631                                         tv.tv_sec = 1;
1632                                         tv.tv_usec = 0;
1633                                         i=select(width,(void *)&readfds,(void *)&writefds,
1634                                                 NULL,&tv);
1635                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1636                                         NULL,timeoutp);
1637                         }
1638 #elif defined(OPENSSL_SYS_BEOS_R5)
1639                         /* Under BeOS-R5 the situation is similar to DOS */
1640                         i=0;
1641                         stdin_set = 0;
1642                         (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
1643                         if(!write_tty) {
1644                                 if(read_tty) {
1645                                         tv.tv_sec = 1;
1646                                         tv.tv_usec = 0;
1647                                         i=select(width,(void *)&readfds,(void *)&writefds,
1648                                                  NULL,&tv);
1649                                         if (read(fileno(stdin), sbuf, 0) >= 0)
1650                                                 stdin_set = 1;
1651                                         if (!i && (stdin_set != 1 || !read_tty))
1652                                                 continue;
1653                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1654                                          NULL,timeoutp);
1655                         }
1656                         (void)fcntl(fileno(stdin), F_SETFL, 0);
1657 #else
1658                         i=select(width,(void *)&readfds,(void *)&writefds,
1659                                  NULL,timeoutp);
1660 #endif
1661                         if ( i < 0)
1662                                 {
1663                                 BIO_printf(bio_err,"bad select %d\n",
1664                                 get_last_socket_error());
1665                                 goto shut;
1666                                 /* goto end; */
1667                                 }
1668                         }
1669
1670                 if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
1671                         {
1672                         BIO_printf(bio_err,"TIMEOUT occured\n");
1673                         }
1674
1675                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1676                         {
1677                         k=SSL_write(con,&(cbuf[cbuf_off]),
1678                                 (unsigned int)cbuf_len);
1679                         switch (SSL_get_error(con,k))
1680                                 {
1681                         case SSL_ERROR_NONE:
1682                                 cbuf_off+=k;
1683                                 cbuf_len-=k;
1684                                 if (k <= 0) goto end;
1685                                 /* we have done a  write(con,NULL,0); */
1686                                 if (cbuf_len <= 0)
1687                                         {
1688                                         read_tty=1;
1689                                         write_ssl=0;
1690                                         }
1691                                 else /* if (cbuf_len > 0) */
1692                                         {
1693                                         read_tty=0;
1694                                         write_ssl=1;
1695                                         }
1696                                 break;
1697                         case SSL_ERROR_WANT_WRITE:
1698                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1699                                 write_ssl=1;
1700                                 read_tty=0;
1701                                 break;
1702                         case SSL_ERROR_WANT_READ:
1703                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1704                                 write_tty=0;
1705                                 read_ssl=1;
1706                                 write_ssl=0;
1707                                 break;
1708                         case SSL_ERROR_WANT_X509_LOOKUP:
1709                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1710                                 break;
1711                         case SSL_ERROR_ZERO_RETURN:
1712                                 if (cbuf_len != 0)
1713                                         {
1714                                         BIO_printf(bio_c_out,"shutdown\n");
1715                                         ret = 0;
1716                                         goto shut;
1717                                         }
1718                                 else
1719                                         {
1720                                         read_tty=1;
1721                                         write_ssl=0;
1722                                         break;
1723                                         }
1724
1725                         case SSL_ERROR_SYSCALL:
1726                                 if ((k != 0) || (cbuf_len != 0))
1727                                         {
1728                                         BIO_printf(bio_err,"write:errno=%d\n",
1729                                                 get_last_socket_error());
1730                                         goto shut;
1731                                         }
1732                                 else
1733                                         {
1734                                         read_tty=1;
1735                                         write_ssl=0;
1736                                         }
1737                                 break;
1738                         case SSL_ERROR_SSL:
1739                                 ERR_print_errors(bio_err);
1740                                 goto shut;
1741                                 }
1742                         }
1743 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
1744                 /* Assume Windows/DOS/BeOS can always write */
1745                 else if (!ssl_pending && write_tty)
1746 #else
1747                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1748 #endif
1749                         {
1750 #ifdef CHARSET_EBCDIC
1751                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1752 #endif
1753                         i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
1754
1755                         if (i <= 0)
1756                                 {
1757                                 BIO_printf(bio_c_out,"DONE\n");
1758                                 ret = 0;
1759                                 goto shut;
1760                                 /* goto end; */
1761                                 }
1762
1763                         sbuf_len-=i;;
1764                         sbuf_off+=i;
1765                         if (sbuf_len <= 0)
1766                                 {
1767                                 read_ssl=1;
1768                                 write_tty=0;
1769                                 }
1770                         }
1771                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1772                         {
1773 #ifdef RENEG
1774 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1775 #endif
1776 #if 1
1777                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1778 #else
1779 /* Demo for pending and peek :-) */
1780                         k=SSL_read(con,sbuf,16);
1781 { char zbuf[10240];
1782 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1783 }
1784 #endif
1785
1786                         switch (SSL_get_error(con,k))
1787                                 {
1788                         case SSL_ERROR_NONE:
1789                                 if (k <= 0)
1790                                         goto end;
1791                                 sbuf_off=0;
1792                                 sbuf_len=k;
1793
1794                                 read_ssl=0;
1795                                 write_tty=1;
1796                                 break;
1797                         case SSL_ERROR_WANT_WRITE:
1798                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1799                                 write_ssl=1;
1800                                 read_tty=0;
1801                                 break;
1802                         case SSL_ERROR_WANT_READ:
1803                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1804                                 write_tty=0;
1805                                 read_ssl=1;
1806                                 if ((read_tty == 0) && (write_ssl == 0))
1807                                         write_ssl=1;
1808                                 break;
1809                         case SSL_ERROR_WANT_X509_LOOKUP:
1810                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1811                                 break;
1812                         case SSL_ERROR_SYSCALL:
1813                                 ret=get_last_socket_error();
1814                                 BIO_printf(bio_err,"read:errno=%d\n",ret);
1815                                 goto shut;
1816                         case SSL_ERROR_ZERO_RETURN:
1817                                 BIO_printf(bio_c_out,"closed\n");
1818                                 ret=0;
1819                                 goto shut;
1820                         case SSL_ERROR_SSL:
1821                                 ERR_print_errors(bio_err);
1822                                 goto shut;
1823                                 /* break; */
1824                                 }
1825                         }
1826
1827 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1828 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1829                 else if (_kbhit())
1830 #else
1831                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1832 #endif
1833 #elif defined (OPENSSL_SYS_NETWARE)
1834                 else if (_kbhit())
1835 #elif defined(OPENSSL_SYS_BEOS_R5)
1836                 else if (stdin_set)
1837 #else
1838                 else if (FD_ISSET(fileno(stdin),&readfds))
1839 #endif
1840                         {
1841                         if (crlf)
1842                                 {
1843                                 int j, lf_num;
1844
1845                                 i=raw_read_stdin(cbuf,BUFSIZZ/2);
1846                                 lf_num = 0;
1847                                 /* both loops are skipped when i <= 0 */
1848                                 for (j = 0; j < i; j++)
1849                                         if (cbuf[j] == '\n')
1850                                                 lf_num++;
1851                                 for (j = i-1; j >= 0; j--)
1852                                         {
1853                                         cbuf[j+lf_num] = cbuf[j];
1854                                         if (cbuf[j] == '\n')
1855                                                 {
1856                                                 lf_num--;
1857                                                 i++;
1858                                                 cbuf[j+lf_num] = '\r';
1859                                                 }
1860                                         }
1861                                 assert(lf_num == 0);
1862                                 }
1863                         else
1864                                 i=raw_read_stdin(cbuf,BUFSIZZ);
1865
1866                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1867                                 {
1868                                 BIO_printf(bio_err,"DONE\n");
1869                                 ret=0;
1870                                 goto shut;
1871                                 }
1872
1873                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1874                                 {
1875                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1876                                 SSL_renegotiate(con);
1877                                 cbuf_len=0;
1878                                 }
1879 #ifndef OPENSSL_NO_HEARTBEATS
1880                         else if ((!c_ign_eof) && (cbuf[0] == 'B'))
1881                                 {
1882                                 BIO_printf(bio_err,"HEARTBEATING\n");
1883                                 SSL_heartbeat(con);
1884                                 cbuf_len=0;
1885                                 }
1886 #endif
1887                         else
1888                                 {
1889                                 cbuf_len=i;
1890                                 cbuf_off=0;
1891 #ifdef CHARSET_EBCDIC
1892                                 ebcdic2ascii(cbuf, cbuf, i);
1893 #endif
1894                                 }
1895
1896                         write_ssl=1;
1897                         read_tty=0;
1898                         }
1899                 }
1900
1901         ret=0;
1902 shut:
1903         if (in_init)
1904                 print_stuff(bio_c_out,con,full_log);
1905         SSL_shutdown(con);
1906         SHUTDOWN(SSL_get_fd(con));
1907 end:
1908         if (con != NULL)
1909                 {
1910                 if (prexit != 0)
1911                         print_stuff(bio_c_out,con,1);
1912                 SSL_free(con);
1913                 }
1914 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1915         if (next_proto.data)
1916                 OPENSSL_free(next_proto.data);
1917 #endif
1918         if (ctx != NULL) SSL_CTX_free(ctx);
1919         if (cert)
1920                 X509_free(cert);
1921         if (key)
1922                 EVP_PKEY_free(key);
1923         if (pass)
1924                 OPENSSL_free(pass);
1925         if (vpm)
1926                 X509_VERIFY_PARAM_free(vpm);
1927         ssl_excert_free(exc);
1928         if (ssl_args)
1929                 sk_OPENSSL_STRING_free(ssl_args);
1930         if (cctx)
1931                 SSL_CONF_CTX_free(cctx);
1932 #ifndef OPENSSL_NO_JPAKE
1933         if (jpake_secret && psk_key)
1934                 OPENSSL_free(psk_key);
1935 #endif
1936         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1937         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1938         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1939         if (bio_c_out != NULL)
1940                 {
1941                 BIO_free(bio_c_out);
1942                 bio_c_out=NULL;
1943                 }
1944         if (bio_c_msg != NULL)
1945                 {
1946                 BIO_free(bio_c_msg);
1947                 bio_c_msg=NULL;
1948                 }
1949         apps_shutdown();
1950         OPENSSL_EXIT(ret);
1951         }
1952
1953
1954 static void print_stuff(BIO *bio, SSL *s, int full)
1955         {
1956         X509 *peer=NULL;
1957         char *p;
1958         static const char *space="                ";
1959         char buf[BUFSIZ];
1960         STACK_OF(X509) *sk;
1961         STACK_OF(X509_NAME) *sk2;
1962         const SSL_CIPHER *c;
1963         X509_NAME *xn;
1964         int j,i;
1965 #ifndef OPENSSL_NO_COMP
1966         const COMP_METHOD *comp, *expansion;
1967 #endif
1968         unsigned char *exportedkeymat;
1969
1970         if (full)
1971                 {
1972                 int got_a_chain = 0;
1973
1974                 sk=SSL_get_peer_cert_chain(s);
1975                 if (sk != NULL)
1976                         {
1977                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1978
1979                         BIO_printf(bio,"---\nCertificate chain\n");
1980                         for (i=0; i<sk_X509_num(sk); i++)
1981                                 {
1982                                 X509_NAME_oneline(X509_get_subject_name(
1983                                         sk_X509_value(sk,i)),buf,sizeof buf);
1984                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1985                                 X509_NAME_oneline(X509_get_issuer_name(
1986                                         sk_X509_value(sk,i)),buf,sizeof buf);
1987                                 BIO_printf(bio,"   i:%s\n",buf);
1988                                 if (c_showcerts)
1989                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1990                                 }
1991                         }
1992
1993                 BIO_printf(bio,"---\n");
1994                 peer=SSL_get_peer_certificate(s);
1995                 if (peer != NULL)
1996                         {
1997                         BIO_printf(bio,"Server certificate\n");
1998                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1999                                 PEM_write_bio_X509(bio,peer);
2000                         X509_NAME_oneline(X509_get_subject_name(peer),
2001                                 buf,sizeof buf);
2002                         BIO_printf(bio,"subject=%s\n",buf);
2003                         X509_NAME_oneline(X509_get_issuer_name(peer),
2004                                 buf,sizeof buf);
2005                         BIO_printf(bio,"issuer=%s\n",buf);
2006                         }
2007                 else
2008                         BIO_printf(bio,"no peer certificate available\n");
2009
2010                 sk2=SSL_get_client_CA_list(s);
2011                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
2012                         {
2013                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
2014                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
2015                                 {
2016                                 xn=sk_X509_NAME_value(sk2,i);
2017                                 X509_NAME_oneline(xn,buf,sizeof(buf));
2018                                 BIO_write(bio,buf,strlen(buf));
2019                                 BIO_write(bio,"\n",1);
2020                                 }
2021                         }
2022                 else
2023                         {
2024                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
2025                         }
2026                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
2027                 if (p != NULL)
2028                         {
2029                         /* This works only for SSL 2.  In later protocol
2030                          * versions, the client does not know what other
2031                          * ciphers (in addition to the one to be used
2032                          * in the current connection) the server supports. */
2033
2034                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
2035                         j=i=0;
2036                         while (*p)
2037                                 {
2038                                 if (*p == ':')
2039                                         {
2040                                         BIO_write(bio,space,15-j%25);
2041                                         i++;
2042                                         j=0;
2043                                         BIO_write(bio,((i%3)?" ":"\n"),1);
2044                                         }
2045                                 else
2046                                         {
2047                                         BIO_write(bio,p,1);
2048                                         j++;
2049                                         }
2050                                 p++;
2051                                 }
2052                         BIO_write(bio,"\n",1);
2053                         }
2054
2055                 ssl_print_sigalgs(bio, s);
2056                 ssl_print_tmp_key(bio, s);
2057
2058                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
2059                         BIO_number_read(SSL_get_rbio(s)),
2060                         BIO_number_written(SSL_get_wbio(s)));
2061                 }
2062         BIO_printf(bio,(SSL_cache_hit(s)?"---\nReused, ":"---\nNew, "));
2063         c=SSL_get_current_cipher(s);
2064         BIO_printf(bio,"%s, Cipher is %s\n",
2065                 SSL_CIPHER_get_version(c),
2066                 SSL_CIPHER_get_name(c));
2067         if (peer != NULL) {
2068                 EVP_PKEY *pktmp;
2069                 pktmp = X509_get_pubkey(peer);
2070                 BIO_printf(bio,"Server public key is %d bit\n",
2071                                                          EVP_PKEY_bits(pktmp));
2072                 EVP_PKEY_free(pktmp);
2073         }
2074         BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
2075                         SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
2076 #ifndef OPENSSL_NO_COMP
2077         comp=SSL_get_current_compression(s);
2078         expansion=SSL_get_current_expansion(s);
2079         BIO_printf(bio,"Compression: %s\n",
2080                 comp ? SSL_COMP_get_name(comp) : "NONE");
2081         BIO_printf(bio,"Expansion: %s\n",
2082                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
2083 #endif
2084
2085 #ifdef SSL_DEBUG
2086         {
2087         /* Print out local port of connection: useful for debugging */
2088         int sock;
2089         struct sockaddr_in ladd;
2090         socklen_t ladd_size = sizeof(ladd);
2091         sock = SSL_get_fd(s);
2092         getsockname(sock, (struct sockaddr *)&ladd, &ladd_size);
2093         BIO_printf(bio_c_out, "LOCAL PORT is %u\n", ntohs(ladd.sin_port));
2094         }
2095 #endif
2096
2097 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2098         if (next_proto.status != -1) {
2099                 const unsigned char *proto;
2100                 unsigned int proto_len;
2101                 SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
2102                 BIO_printf(bio, "Next protocol: (%d) ", next_proto.status);
2103                 BIO_write(bio, proto, proto_len);
2104                 BIO_write(bio, "\n", 1);
2105         }
2106 #endif
2107
2108         {
2109         SRTP_PROTECTION_PROFILE *srtp_profile=SSL_get_selected_srtp_profile(s);
2110
2111         if(srtp_profile)
2112                 BIO_printf(bio,"SRTP Extension negotiated, profile=%s\n",
2113                            srtp_profile->name);
2114         }
2115
2116         SSL_SESSION_print(bio,SSL_get_session(s));
2117         if (keymatexportlabel != NULL)
2118                 {
2119                 BIO_printf(bio, "Keying material exporter:\n");
2120                 BIO_printf(bio, "    Label: '%s'\n", keymatexportlabel);
2121                 BIO_printf(bio, "    Length: %i bytes\n", keymatexportlen);
2122                 exportedkeymat = OPENSSL_malloc(keymatexportlen);
2123                 if (exportedkeymat != NULL)
2124                         {
2125                         if (!SSL_export_keying_material(s, exportedkeymat,
2126                                                         keymatexportlen,
2127                                                         keymatexportlabel,
2128                                                         strlen(keymatexportlabel),
2129                                                         NULL, 0, 0))
2130                                 {
2131                                 BIO_printf(bio, "    Error\n");
2132                                 }
2133                         else
2134                                 {
2135                                 BIO_printf(bio, "    Keying material: ");
2136                                 for (i=0; i<keymatexportlen; i++)
2137                                         BIO_printf(bio, "%02X",
2138                                                    exportedkeymat[i]);
2139                                 BIO_printf(bio, "\n");
2140                                 }
2141                         OPENSSL_free(exportedkeymat);
2142                         }
2143                 }
2144         BIO_printf(bio,"---\n");
2145         if (peer != NULL)
2146                 X509_free(peer);
2147         /* flush, or debugging output gets mixed with http response */
2148         (void)BIO_flush(bio);
2149         }
2150
2151 #ifndef OPENSSL_NO_TLSEXT
2152
2153 static int ocsp_resp_cb(SSL *s, void *arg)
2154         {
2155         const unsigned char *p;
2156         int len;
2157         OCSP_RESPONSE *rsp;
2158         len = SSL_get_tlsext_status_ocsp_resp(s, &p);
2159         BIO_puts(arg, "OCSP response: ");
2160         if (!p)
2161                 {
2162                 BIO_puts(arg, "no response sent\n");
2163                 return 1;
2164                 }
2165         rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
2166         if (!rsp)
2167                 {
2168                 BIO_puts(arg, "response parse error\n");
2169                 BIO_dump_indent(arg, (char *)p, len, 4);
2170                 return 0;
2171                 }
2172         BIO_puts(arg, "\n======================================\n");
2173         OCSP_RESPONSE_print(arg, rsp, 0);
2174         BIO_puts(arg, "======================================\n");
2175         OCSP_RESPONSE_free(rsp);
2176         return 1;
2177         }
2178
2179 static int audit_proof_cb(SSL *s, void *arg)
2180         {
2181         const unsigned char *proof;
2182         size_t proof_len;
2183         size_t i;
2184         SSL_SESSION *sess = SSL_get_session(s);
2185
2186         proof = SSL_SESSION_get_tlsext_authz_server_audit_proof(sess,
2187                                                                 &proof_len);
2188         if (proof != NULL)
2189                 {
2190                 BIO_printf(bio_c_out, "Audit proof: ");
2191                 for (i = 0; i < proof_len; ++i)
2192                         BIO_printf(bio_c_out, "%02X", proof[i]);
2193                 BIO_printf(bio_c_out, "\n");
2194                 }
2195         else
2196                 {
2197                 BIO_printf(bio_c_out, "No audit proof found.\n");
2198                 }
2199         return 1;
2200         }
2201 #endif