apps/s_client.c

   1 /* apps/s_client.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58 /* ====================================================================
  59  * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
  60  *
  61  * Redistribution and use in source and binary forms, with or without
  62  * modification, are permitted provided that the following conditions
  63  * are met:
  64  *
  65  * 1. Redistributions of source code must retain the above copyright
  66  *    notice, this list of conditions and the following disclaimer.
  67  *
  68  * 2. Redistributions in binary form must reproduce the above copyright
  69  *    notice, this list of conditions and the following disclaimer in
  70  *    the documentation and/or other materials provided with the
  71  *    distribution.
  72  *
  73  * 3. All advertising materials mentioning features or use of this
  74  *    software must display the following acknowledgment:
  75  *    "This product includes software developed by the OpenSSL Project
  76  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  77  *
  78  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  79  *    endorse or promote products derived from this software without
  80  *    prior written permission. For written permission, please contact
  81  *    openssl-core@openssl.org.
  82  *
  83  * 5. Products derived from this software may not be called "OpenSSL"
  84  *    nor may "OpenSSL" appear in their names without prior written
  85  *    permission of the OpenSSL Project.
  86  *
  87  * 6. Redistributions of any form whatsoever must retain the following
  88  *    acknowledgment:
  89  *    "This product includes software developed by the OpenSSL Project
  90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  91  *
  92  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  93  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  94  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  95  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  96  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  97  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  98  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  99  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 100  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 101  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 102  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 103  * OF THE POSSIBILITY OF SUCH DAMAGE.
 104  * ====================================================================
 105  *
 106  * This product includes cryptographic software written by Eric Young
 107  * (eay@cryptsoft.com).  This product includes software written by Tim
 108  * Hudson (tjh@cryptsoft.com).
 109  *
 110  */
 111 /* ====================================================================
 112  * Copyright 2005 Nokia. All rights reserved.
 113  *
 114  * The portions of the attached software ("Contribution") is developed by
 115  * Nokia Corporation and is licensed pursuant to the OpenSSL open source
 116  * license.
 117  *
 118  * The Contribution, originally written by Mika Kousa and Pasi Eronen of
 119  * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
 120  * support (see RFC 4279) to OpenSSL.
 121  *
 122  * No patent licenses or other rights except those expressly stated in
 123  * the OpenSSL open source license shall be deemed granted or received
 124  * expressly, by implication, estoppel, or otherwise.
 125  *
 126  * No assurances are provided by Nokia that the Contribution does not
 127  * infringe the patent or other intellectual property rights of any third
 128  * party or that the license provides you with all the necessary rights
 129  * to make use of the Contribution.
 130  *
 131  * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
 132  * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
 133  * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
 134  * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
 135  * OTHERWISE.
 136  */
 137
 138 #include <assert.h>
 139 #include <ctype.h>
 140 #include <stdio.h>
 141 #include <stdlib.h>
 142 #include <string.h>
 143 #include <openssl/e_os2.h>
 144 #ifdef OPENSSL_NO_STDIO
 145 #define APPS_WIN16
 146 #endif
 147
 148 /* With IPv6, it looks like Digital has mixed up the proper order of
 149    recursive header file inclusion, resulting in the compiler complaining
 150    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
 151    is needed to have fileno() declared correctly...  So let's define u_int */
 152 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
 153 #define __U_INT
 154 typedef unsigned int u_int;
 155 #endif
 156
 157 #define USE_SOCKETS
 158 #include "apps.h"
 159 #include <openssl/x509.h>
 160 #include <openssl/ssl.h>
 161 #include <openssl/err.h>
 162 #include <openssl/pem.h>
 163 #include <openssl/rand.h>
 164 #include <openssl/ocsp.h>
 165 #include <openssl/bn.h>
 166 #ifndef OPENSSL_NO_SRP
 167 #include <openssl/srp.h>
 168 #endif
 169 #include "s_apps.h"
 170 #include "timeouts.h"
 171
 172 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
 173 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
 174 #undef FIONBIO
 175 #endif
 176
 177 #if defined(OPENSSL_SYS_BEOS_R5)
 178 #include <fcntl.h>
 179 #endif
 180
 181 #undef PROG
 182 #define PROG    s_client_main
 183
 184 /*#define SSL_HOST_NAME "www.netscape.com" */
 185 /*#define SSL_HOST_NAME "193.118.187.102" */
 186 #define SSL_HOST_NAME   "localhost"
 187
 188 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 189
 190 #undef BUFSIZZ
 191 #define BUFSIZZ 1024*8
 192
 193 extern int verify_depth;
 194 extern int verify_error;
 195 extern int verify_return_error;
 196
 197 #ifdef FIONBIO
 198 static int c_nbio=0;
 199 #endif
 200 static int c_Pause=0;
 201 static int c_debug=0;
 202 #ifndef OPENSSL_NO_TLSEXT
 203 static int c_tlsextdebug=0;
 204 static int c_status_req=0;
 205 #endif
 206 static int c_msg=0;
 207 static int c_showcerts=0;
 208
 209 static char *keymatexportlabel=NULL;
 210 static int keymatexportlen=20;
 211
 212 static void sc_usage(void);
 213 static void print_stuff(BIO *berr,SSL *con,int full);
 214 #ifndef OPENSSL_NO_TLSEXT
 215 static int ocsp_resp_cb(SSL *s, void *arg);
 216 #endif
 217 static BIO *bio_c_out=NULL;
 218 static int c_quiet=0;
 219 static int c_ign_eof=0;
 220
 221 #ifndef OPENSSL_NO_PSK
 222 /* Default PSK identity and key */
 223 static char *psk_identity="Client_identity";
 224 /*char *psk_key=NULL;  by default PSK is not used */
 225
 226 static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity,
 227         unsigned int max_identity_len, unsigned char *psk,
 228         unsigned int max_psk_len)
 229         {
 230         unsigned int psk_len = 0;
 231         int ret;
 232         BIGNUM *bn=NULL;
 233
 234         if (c_debug)
 235                 BIO_printf(bio_c_out, "psk_client_cb\n");
 236         if (!hint)
 237                 {
 238                 /* no ServerKeyExchange message*/
 239                 if (c_debug)
 240                         BIO_printf(bio_c_out,"NULL received PSK identity hint, continuing anyway\n");
 241                 }
 242         else if (c_debug)
 243                 BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint);
 244
 245         /* lookup PSK identity and PSK key based on the given identity hint here */
 246         ret = BIO_snprintf(identity, max_identity_len, "%s", psk_identity);
 247         if (ret < 0 || (unsigned int)ret > max_identity_len)
 248                 goto out_err;
 249         if (c_debug)
 250                 BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity, ret);
 251         ret=BN_hex2bn(&bn, psk_key);
 252         if (!ret)
 253                 {
 254                 BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
 255                 if (bn)
 256                         BN_free(bn);
 257                 return 0;
 258                 }
 259
 260         if ((unsigned int)BN_num_bytes(bn) > max_psk_len)
 261                 {
 262                 BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
 263                         max_psk_len, BN_num_bytes(bn));
 264                 BN_free(bn);
 265                 return 0;
 266                 }
 267
 268         psk_len=BN_bn2bin(bn, psk);
 269         BN_free(bn);
 270         if (psk_len == 0)
 271                 goto out_err;
 272
 273         if (c_debug)
 274                 BIO_printf(bio_c_out, "created PSK len=%d\n", psk_len);
 275
 276         return psk_len;
 277  out_err:
 278         if (c_debug)
 279                 BIO_printf(bio_err, "Error in PSK client callback\n");
 280         return 0;
 281         }
 282 #endif
 283
 284 static void sc_usage(void)
 285         {
 286         BIO_printf(bio_err,"usage: s_client args\n");
 287         BIO_printf(bio_err,"\n");
 288         BIO_printf(bio_err," -host host     - use -connect instead\n");
 289         BIO_printf(bio_err," -port port     - use -connect instead\n");
 290         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 291
 292         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 293         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 294         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
 295         BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
 296         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 297         BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
 298         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
 299         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 300         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 301         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 302         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 303         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 304         BIO_printf(bio_err," -debug        - extra output\n");
 305 #ifdef WATT32
 306         BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
 307 #endif
 308         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 309         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 310         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 311 #ifdef FIONBIO
 312         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 313 #endif
 314         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 315         BIO_printf(bio_err," -quiet        - no s_client output\n");
 316         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 317         BIO_printf(bio_err," -no_ign_eof   - don't ignore input eof\n");
 318 #ifndef OPENSSL_NO_PSK
 319         BIO_printf(bio_err," -psk_identity arg - PSK identity\n");
 320         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
 321 # ifndef OPENSSL_NO_JPAKE
 322         BIO_printf(bio_err," -jpake arg    - JPAKE secret to use\n");
 323 # endif
 324 #endif
 325 #ifndef OPENSSL_NO_SRP
 326         BIO_printf(bio_err," -srpuser user     - SRP authentification for 'user'\n");
 327         BIO_printf(bio_err," -srppass arg      - password for 'user'\n");
 328         BIO_printf(bio_err," -srp_lateuser     - SRP username into second ClientHello message\n");
 329         BIO_printf(bio_err," -srp_moregroups   - Tolerate other than the known g N values.\n");
 330         BIO_printf(bio_err," -srp_strength int - minimal mength in bits for N (default %d).\n",SRP_MINIMAL_N);
 331 #endif
 332         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 333         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 334         BIO_printf(bio_err," -tls1_2       - just use TLSv1.2\n");
 335         BIO_printf(bio_err," -tls1_1       - just use TLSv1.1\n");
 336         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 337         BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");
 338         BIO_printf(bio_err," -mtu          - set the link layer MTU\n");
 339         BIO_printf(bio_err," -no_tls1_2/-no_tls1_1/-no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 340         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 341         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 342         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 343         BIO_printf(bio_err,"                 command to see what is available\n");
 344         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
 345         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
 346         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
 347         BIO_printf(bio_err,"                 only \"smtp\", \"pop3\", \"imap\", \"ftp\" and \"xmpp\"\n");
 348         BIO_printf(bio_err,"                 are supported.\n");
 349 #ifndef OPENSSL_NO_ENGINE
 350         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 351 #endif
 352         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 353         BIO_printf(bio_err," -sess_out arg - file to write SSL session to\n");
 354         BIO_printf(bio_err," -sess_in arg  - file to read SSL session from\n");
 355 #ifndef OPENSSL_NO_TLSEXT
 356         BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
 357         BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
 358         BIO_printf(bio_err," -status           - request certificate status from server\n");
 359         BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
 360 # ifndef OPENSSL_NO_NEXTPROTONEG
 361         BIO_printf(bio_err," -nextprotoneg arg - enable NPN extension, considering named protocols supported (comma-separated list)\n");
 362 # endif
 363 #endif
 364         BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
 365         BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
 366         BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
 367         BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
 368         }
 369
 370 #ifndef OPENSSL_NO_TLSEXT
 371
 372 /* This is a context that we pass to callbacks */
 373 typedef struct tlsextctx_st {
 374    BIO * biodebug;
 375    int ack;
 376 } tlsextctx;
 377
 378
 379 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
 380         {
 381         tlsextctx * p = (tlsextctx *) arg;
 382         const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
 383         if (SSL_get_servername_type(s) != -1)
 384                 p->ack = !SSL_session_reused(s) && hn != NULL;
 385         else
 386                 BIO_printf(bio_err,"Can't use SSL_get_servername\n");
 387
 388         return SSL_TLSEXT_ERR_OK;
 389         }
 390
 391 #ifndef OPENSSL_NO_SRP
 392
 393 /* This is a context that we pass to all callbacks */
 394 typedef struct srp_arg_st
 395         {
 396         char *srppassin;
 397         char *srplogin;
 398         int msg;   /* copy from c_msg */
 399         int debug; /* copy from c_debug */
 400         int amp;   /* allow more groups */
 401         int strength /* minimal size for N */ ;
 402         } SRP_ARG;
 403
 404 #define SRP_NUMBER_ITERATIONS_FOR_PRIME 64
 405
 406 static int srp_Verify_N_and_g(const BIGNUM *N, const BIGNUM *g)
 407         {
 408         BN_CTX *bn_ctx = BN_CTX_new();
 409         BIGNUM *p = BN_new();
 410         BIGNUM *r = BN_new();
 411         int ret =
 412                 g != NULL && N != NULL && bn_ctx != NULL && BN_is_odd(N) &&
 413                 BN_is_prime_ex(N, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
 414                 p != NULL && BN_rshift1(p, N) &&
 415
 416                 /* p = (N-1)/2 */
 417                 BN_is_prime_ex(p, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
 418                 r != NULL &&
 419
 420                 /* verify g^((N-1)/2) == -1 (mod N) */
 421                 BN_mod_exp(r, g, p, N, bn_ctx) &&
 422                 BN_add_word(r, 1) &&
 423                 BN_cmp(r, N) == 0;
 424
 425         if(r)
 426                 BN_free(r);
 427         if(p)
 428                 BN_free(p);
 429         if(bn_ctx)
 430                 BN_CTX_free(bn_ctx);
 431         return ret;
 432         }
 433
 434 /* This callback is used here for two purposes:
 435    - extended debugging
 436    - making some primality tests for unknown groups
 437    The callback is only called for a non default group.
 438
 439    An application does not need the call back at all if
 440    only the stanard groups are used.  In real life situations,
 441    client and server already share well known groups,
 442    thus there is no need to verify them.
 443    Furthermore, in case that a server actually proposes a group that
 444    is not one of those defined in RFC 5054, it is more appropriate
 445    to add the group to a static list and then compare since
 446    primality tests are rather cpu consuming.
 447 */
 448
 449 static int MS_CALLBACK ssl_srp_verify_param_cb(SSL *s, void *arg)
 450         {
 451         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 452         BIGNUM *N = NULL, *g = NULL;
 453         if (!(N = SSL_get_srp_N(s)) || !(g = SSL_get_srp_g(s)))
 454                 return 0;
 455         if (srp_arg->debug || srp_arg->msg || srp_arg->amp == 1)
 456                 {
 457                 BIO_printf(bio_err, "SRP parameters:\n");
 458                 BIO_printf(bio_err,"\tN="); BN_print(bio_err,N);
 459                 BIO_printf(bio_err,"\n\tg="); BN_print(bio_err,g);
 460                 BIO_printf(bio_err,"\n");
 461                 }
 462
 463         if (SRP_check_known_gN_param(g,N))
 464                 return 1;
 465
 466         if (srp_arg->amp == 1)
 467                 {
 468                 if (srp_arg->debug)
 469                         BIO_printf(bio_err, "SRP param N and g are not known params, going to check deeper.\n");
 470
 471 /* The srp_moregroups is a real debugging feature.
 472    Implementors should rather add the value to the known ones.
 473    The minimal size has already been tested.
 474 */
 475                 if (BN_num_bits(g) <= BN_BITS && srp_Verify_N_and_g(N,g))
 476                         return 1;
 477                 }
 478         BIO_printf(bio_err, "SRP param N and g rejected.\n");
 479         return 0;
 480         }
 481
 482 #define PWD_STRLEN 1024
 483
 484 static char * MS_CALLBACK ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
 485         {
 486         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 487         char *pass = (char *)OPENSSL_malloc(PWD_STRLEN+1);
 488         PW_CB_DATA cb_tmp;
 489         int l;
 490
 491         cb_tmp.password = (char *)srp_arg->srppassin;
 492         cb_tmp.prompt_info = "SRP user";
 493         if ((l = password_callback(pass, PWD_STRLEN, 0, &cb_tmp))<0)
 494                 {
 495                 BIO_printf (bio_err, "Can't read Password\n");
 496                 OPENSSL_free(pass);
 497                 return NULL;
 498                 }
 499         *(pass+l)= '\0';
 500
 501         return pass;
 502         }
 503
 504 #endif
 505         char *srtp_profiles = NULL;
 506
 507 # ifndef OPENSSL_NO_NEXTPROTONEG
 508 /* This the context that we pass to next_proto_cb */
 509 typedef struct tlsextnextprotoctx_st {
 510         unsigned char *data;
 511         unsigned short len;
 512         int status;
 513 } tlsextnextprotoctx;
 514
 515 static tlsextnextprotoctx next_proto;
 516
 517 static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
 518         {
 519         tlsextnextprotoctx *ctx = arg;
 520
 521         if (!c_quiet)
 522                 {
 523                 /* We can assume that |in| is syntactically valid. */
 524                 unsigned i;
 525                 BIO_printf(bio_c_out, "Protocols advertised by server: ");
 526                 for (i = 0; i < inlen; )
 527                         {
 528                         if (i)
 529                                 BIO_write(bio_c_out, ", ", 2);
 530                         BIO_write(bio_c_out, &in[i + 1], in[i]);
 531                         i += in[i] + 1;
 532                         }
 533                 BIO_write(bio_c_out, "\n", 1);
 534                 }
 535
 536         ctx->status = SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len);
 537         return SSL_TLSEXT_ERR_OK;
 538         }
 539 # endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
 540 #endif
 541
 542 enum
 543 {
 544         PROTO_OFF       = 0,
 545         PROTO_SMTP,
 546         PROTO_POP3,
 547         PROTO_IMAP,
 548         PROTO_FTP,
 549         PROTO_XMPP
 550 };
 551
 552 int MAIN(int, char **);
 553
 554 int MAIN(int argc, char **argv)
 555         {
 556         unsigned int off=0, clr=0;
 557         SSL *con=NULL;
 558 #ifndef OPENSSL_NO_KRB5
 559         KSSL_CTX *kctx;
 560 #endif
 561         int s,k,width,state=0;
 562         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
 563         int cbuf_len,cbuf_off;
 564         int sbuf_len,sbuf_off;
 565         fd_set readfds,writefds;
 566         short port=PORT;
 567         int full_log=1;
 568         char *host=SSL_HOST_NAME;
 569         char *cert_file=NULL,*key_file=NULL;
 570         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
 571         char *passarg = NULL, *pass = NULL;
 572         X509 *cert = NULL;
 573         EVP_PKEY *key = NULL;
 574         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 575         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 576         int crlf=0;
 577         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 578         SSL_CTX *ctx=NULL;
 579         int ret=1,in_init=1,i,nbio_test=0;
 580         int starttls_proto = PROTO_OFF;
 581         int prexit = 0;
 582         X509_VERIFY_PARAM *vpm = NULL;
 583         int badarg = 0;
 584         const SSL_METHOD *meth=NULL;
 585         int socket_type=SOCK_STREAM;
 586         BIO *sbio;
 587         char *inrand=NULL;
 588         int mbuf_len=0;
 589         struct timeval timeout, *timeoutp;
 590 #ifndef OPENSSL_NO_ENGINE
 591         char *engine_id=NULL;
 592         char *ssl_client_engine_id=NULL;
 593         ENGINE *ssl_client_engine=NULL;
 594 #endif
 595         ENGINE *e=NULL;
 596 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
 597         struct timeval tv;
 598 #if defined(OPENSSL_SYS_BEOS_R5)
 599         int stdin_set = 0;
 600 #endif
 601 #endif
 602 #ifndef OPENSSL_NO_TLSEXT
 603         char *servername = NULL;
 604         char *curves=NULL;
 605         tlsextctx tlsextcbp =
 606         {NULL,0};
 607 # ifndef OPENSSL_NO_NEXTPROTONEG
 608         const char *next_proto_neg_in = NULL;
 609 # endif
 610 #endif
 611         char *sess_in = NULL;
 612         char *sess_out = NULL;
 613         struct sockaddr peer;
 614         int peerlen = sizeof(peer);
 615         int enable_timeouts = 0 ;
 616         long socket_mtu = 0;
 617 #ifndef OPENSSL_NO_JPAKE
 618         char *jpake_secret = NULL;
 619 #endif
 620 #ifndef OPENSSL_NO_SRP
 621         char * srppass = NULL;
 622         int srp_lateuser = 0;
 623         SRP_ARG srp_arg = {NULL,NULL,0,0,0,1024};
 624 #endif
 625
 626         meth=SSLv23_client_method();
 627
 628         apps_startup();
 629         c_Pause=0;
 630         c_quiet=0;
 631         c_ign_eof=0;
 632         c_debug=0;
 633         c_msg=0;
 634         c_showcerts=0;
 635
 636         if (bio_err == NULL)
 637                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 638
 639         if (!load_config(bio_err, NULL))
 640                 goto end;
 641
 642         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 643                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 644                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 645                 {
 646                 BIO_printf(bio_err,"out of memory\n");
 647                 goto end;
 648                 }
 649
 650         verify_depth=0;
 651         verify_error=X509_V_OK;
 652 #ifdef FIONBIO
 653         c_nbio=0;
 654 #endif
 655
 656         argc--;
 657         argv++;
 658         while (argc >= 1)
 659                 {
 660                 if      (strcmp(*argv,"-host") == 0)
 661                         {
 662                         if (--argc < 1) goto bad;
 663                         host= *(++argv);
 664                         }
 665                 else if (strcmp(*argv,"-port") == 0)
 666                         {
 667                         if (--argc < 1) goto bad;
 668                         port=atoi(*(++argv));
 669                         if (port == 0) goto bad;
 670                         }
 671                 else if (strcmp(*argv,"-connect") == 0)
 672                         {
 673                         if (--argc < 1) goto bad;
 674                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 675                                 goto bad;
 676                         }
 677                 else if (strcmp(*argv,"-verify") == 0)
 678                         {
 679                         verify=SSL_VERIFY_PEER;
 680                         if (--argc < 1) goto bad;
 681                         verify_depth=atoi(*(++argv));
 682                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 683                         }
 684                 else if (strcmp(*argv,"-cert") == 0)
 685                         {
 686                         if (--argc < 1) goto bad;
 687                         cert_file= *(++argv);
 688                         }
 689                 else if (strcmp(*argv,"-sess_out") == 0)
 690                         {
 691                         if (--argc < 1) goto bad;
 692                         sess_out = *(++argv);
 693                         }
 694                 else if (strcmp(*argv,"-sess_in") == 0)
 695                         {
 696                         if (--argc < 1) goto bad;
 697                         sess_in = *(++argv);
 698                         }
 699                 else if (strcmp(*argv,"-certform") == 0)
 700                         {
 701                         if (--argc < 1) goto bad;
 702                         cert_format = str2fmt(*(++argv));
 703                         }
 704                 else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm))
 705                         {
 706                         if (badarg)
 707                                 goto bad;
 708                         continue;
 709                         }
 710                 else if (strcmp(*argv,"-verify_return_error") == 0)
 711                         verify_return_error = 1;
 712                 else if (strcmp(*argv,"-prexit") == 0)
 713                         prexit=1;
 714                 else if (strcmp(*argv,"-crlf") == 0)
 715                         crlf=1;
 716                 else if (strcmp(*argv,"-quiet") == 0)
 717                         {
 718                         c_quiet=1;
 719                         c_ign_eof=1;
 720                         }
 721                 else if (strcmp(*argv,"-ign_eof") == 0)
 722                         c_ign_eof=1;
 723                 else if (strcmp(*argv,"-no_ign_eof") == 0)
 724                         c_ign_eof=0;
 725                 else if (strcmp(*argv,"-pause") == 0)
 726                         c_Pause=1;
 727                 else if (strcmp(*argv,"-debug") == 0)
 728                         c_debug=1;
 729 #ifndef OPENSSL_NO_TLSEXT
 730                 else if (strcmp(*argv,"-tlsextdebug") == 0)
 731                         c_tlsextdebug=1;
 732                 else if (strcmp(*argv,"-status") == 0)
 733                         c_status_req=1;
 734 #endif
 735 #ifdef WATT32
 736                 else if (strcmp(*argv,"-wdebug") == 0)
 737                         dbug_init();
 738 #endif
 739                 else if (strcmp(*argv,"-msg") == 0)
 740                         c_msg=1;
 741                 else if (strcmp(*argv,"-showcerts") == 0)
 742                         c_showcerts=1;
 743                 else if (strcmp(*argv,"-nbio_test") == 0)
 744                         nbio_test=1;
 745                 else if (strcmp(*argv,"-state") == 0)
 746                         state=1;
 747 #ifndef OPENSSL_NO_PSK
 748                 else if (strcmp(*argv,"-psk_identity") == 0)
 749                         {
 750                         if (--argc < 1) goto bad;
 751                         psk_identity=*(++argv);
 752                         }
 753                 else if (strcmp(*argv,"-psk") == 0)
 754                         {
 755                         size_t j;
 756
 757                         if (--argc < 1) goto bad;
 758                         psk_key=*(++argv);
 759                         for (j = 0; j < strlen(psk_key); j++)
 760                                 {
 761                                 if (isxdigit((unsigned char)psk_key[j]))
 762                                         continue;
 763                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
 764                                 goto bad;
 765                                 }
 766                         }
 767 #endif
 768 #ifndef OPENSSL_NO_SRP
 769                 else if (strcmp(*argv,"-srpuser") == 0)
 770                         {
 771                         if (--argc < 1) goto bad;
 772                         srp_arg.srplogin= *(++argv);
 773                         meth=TLSv1_client_method();
 774                         }
 775                 else if (strcmp(*argv,"-srppass") == 0)
 776                         {
 777                         if (--argc < 1) goto bad;
 778                         srppass= *(++argv);
 779                         meth=TLSv1_client_method();
 780                         }
 781                 else if (strcmp(*argv,"-srp_strength") == 0)
 782                         {
 783                         if (--argc < 1) goto bad;
 784                         srp_arg.strength=atoi(*(++argv));
 785                         BIO_printf(bio_err,"SRP minimal length for N is %d\n",srp_arg.strength);
 786                         meth=TLSv1_client_method();
 787                         }
 788                 else if (strcmp(*argv,"-srp_lateuser") == 0)
 789                         {
 790                         srp_lateuser= 1;
 791                         meth=TLSv1_client_method();
 792                         }
 793                 else if (strcmp(*argv,"-srp_moregroups") == 0)
 794                         {
 795                         srp_arg.amp=1;
 796                         meth=TLSv1_client_method();
 797                         }
 798 #endif
 799 #ifndef OPENSSL_NO_SSL2
 800                 else if (strcmp(*argv,"-ssl2") == 0)
 801                         meth=SSLv2_client_method();
 802 #endif
 803 #ifndef OPENSSL_NO_SSL3
 804                 else if (strcmp(*argv,"-ssl3") == 0)
 805                         meth=SSLv3_client_method();
 806 #endif
 807 #ifndef OPENSSL_NO_TLS1
 808                 else if (strcmp(*argv,"-tls1_2") == 0)
 809                         meth=TLSv1_2_client_method();
 810                 else if (strcmp(*argv,"-tls1_1") == 0)
 811                         meth=TLSv1_1_client_method();
 812                 else if (strcmp(*argv,"-tls1") == 0)
 813                         meth=TLSv1_client_method();
 814 #endif
 815 #ifndef OPENSSL_NO_DTLS1
 816                 else if (strcmp(*argv,"-dtls1") == 0)
 817                         {
 818                         meth=DTLSv1_client_method();
 819                         socket_type=SOCK_DGRAM;
 820                         }
 821                 else if (strcmp(*argv,"-timeout") == 0)
 822                         enable_timeouts=1;
 823                 else if (strcmp(*argv,"-mtu") == 0)
 824                         {
 825                         if (--argc < 1) goto bad;
 826                         socket_mtu = atol(*(++argv));
 827                         }
 828 #endif
 829                 else if (strcmp(*argv,"-bugs") == 0)
 830                         bugs=1;
 831                 else if (strcmp(*argv,"-keyform") == 0)
 832                         {
 833                         if (--argc < 1) goto bad;
 834                         key_format = str2fmt(*(++argv));
 835                         }
 836                 else if (strcmp(*argv,"-pass") == 0)
 837                         {
 838                         if (--argc < 1) goto bad;
 839                         passarg = *(++argv);
 840                         }
 841                 else if (strcmp(*argv,"-key") == 0)
 842                         {
 843                         if (--argc < 1) goto bad;
 844                         key_file= *(++argv);
 845                         }
 846                 else if (strcmp(*argv,"-reconnect") == 0)
 847                         {
 848                         reconnect=5;
 849                         }
 850                 else if (strcmp(*argv,"-CApath") == 0)
 851                         {
 852                         if (--argc < 1) goto bad;
 853                         CApath= *(++argv);
 854                         }
 855                 else if (strcmp(*argv,"-CAfile") == 0)
 856                         {
 857                         if (--argc < 1) goto bad;
 858                         CAfile= *(++argv);
 859                         }
 860                 else if (strcmp(*argv,"-no_tls1_2") == 0)
 861                         off|=SSL_OP_NO_TLSv1_2;
 862                 else if (strcmp(*argv,"-no_tls1_1") == 0)
 863                         off|=SSL_OP_NO_TLSv1_1;
 864                 else if (strcmp(*argv,"-no_tls1") == 0)
 865                         off|=SSL_OP_NO_TLSv1;
 866                 else if (strcmp(*argv,"-no_ssl3") == 0)
 867                         off|=SSL_OP_NO_SSLv3;
 868                 else if (strcmp(*argv,"-no_ssl2") == 0)
 869                         off|=SSL_OP_NO_SSLv2;
 870                 else if (strcmp(*argv,"-no_comp") == 0)
 871                         { off|=SSL_OP_NO_COMPRESSION; }
 872 #ifndef OPENSSL_NO_TLSEXT
 873                 else if (strcmp(*argv,"-no_ticket") == 0)
 874                         { off|=SSL_OP_NO_TICKET; }
 875 # ifndef OPENSSL_NO_NEXTPROTONEG
 876                 else if (strcmp(*argv,"-nextprotoneg") == 0)
 877                         {
 878                         if (--argc < 1) goto bad;
 879                         next_proto_neg_in = *(++argv);
 880                         }
 881 # endif
 882 #endif
 883                 else if (strcmp(*argv,"-serverpref") == 0)
 884                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 885                 else if (strcmp(*argv,"-legacy_renegotiation") == 0)
 886                         off|=SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
 887                 else if (strcmp(*argv,"-legacy_server_connect") == 0)
 888                         { off|=SSL_OP_LEGACY_SERVER_CONNECT; }
 889                 else if (strcmp(*argv,"-no_legacy_server_connect") == 0)
 890                         { clr|=SSL_OP_LEGACY_SERVER_CONNECT; }
 891                 else if (strcmp(*argv,"-cipher") == 0)
 892                         {
 893                         if (--argc < 1) goto bad;
 894                         cipher= *(++argv);
 895                         }
 896 #ifdef FIONBIO
 897                 else if (strcmp(*argv,"-nbio") == 0)
 898                         { c_nbio=1; }
 899 #endif
 900                 else if (strcmp(*argv,"-starttls") == 0)
 901                         {
 902                         if (--argc < 1) goto bad;
 903                         ++argv;
 904                         if (strcmp(*argv,"smtp") == 0)
 905                                 starttls_proto = PROTO_SMTP;
 906                         else if (strcmp(*argv,"pop3") == 0)
 907                                 starttls_proto = PROTO_POP3;
 908                         else if (strcmp(*argv,"imap") == 0)
 909                                 starttls_proto = PROTO_IMAP;
 910                         else if (strcmp(*argv,"ftp") == 0)
 911                                 starttls_proto = PROTO_FTP;
 912                         else if (strcmp(*argv, "xmpp") == 0)
 913                                 starttls_proto = PROTO_XMPP;
 914                         else
 915                                 goto bad;
 916                         }
 917 #ifndef OPENSSL_NO_ENGINE
 918                 else if (strcmp(*argv,"-engine") == 0)
 919                         {
 920                         if (--argc < 1) goto bad;
 921                         engine_id = *(++argv);
 922                         }
 923                 else if (strcmp(*argv,"-ssl_client_engine") == 0)
 924                         {
 925                         if (--argc < 1) goto bad;
 926                         ssl_client_engine_id = *(++argv);
 927                         }
 928 #endif
 929                 else if (strcmp(*argv,"-rand") == 0)
 930                         {
 931                         if (--argc < 1) goto bad;
 932                         inrand= *(++argv);
 933                         }
 934 #ifndef OPENSSL_NO_TLSEXT
 935                 else if (strcmp(*argv,"-servername") == 0)
 936                         {
 937                         if (--argc < 1) goto bad;
 938                         servername= *(++argv);
 939                         /* meth=TLSv1_client_method(); */
 940                         }
 941                 else if (strcmp(*argv,"-curves") == 0)
 942                         {
 943                         if (--argc < 1) goto bad;
 944                         curves= *(++argv);
 945                         }
 946 #endif
 947 #ifndef OPENSSL_NO_JPAKE
 948                 else if (strcmp(*argv,"-jpake") == 0)
 949                         {
 950                         if (--argc < 1) goto bad;
 951                         jpake_secret = *++argv;
 952                         }
 953 #endif
 954                 else if (strcmp(*argv,"-use_srtp") == 0)
 955                         {
 956                         if (--argc < 1) goto bad;
 957                         srtp_profiles = *(++argv);
 958                         }
 959                 else if (strcmp(*argv,"-keymatexport") == 0)
 960                         {
 961                         if (--argc < 1) goto bad;
 962                         keymatexportlabel= *(++argv);
 963                         }
 964                 else if (strcmp(*argv,"-keymatexportlen") == 0)
 965                         {
 966                         if (--argc < 1) goto bad;
 967                         keymatexportlen=atoi(*(++argv));
 968                         if (keymatexportlen == 0) goto bad;
 969                         }
 970                 else
 971                         {
 972                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 973                         badop=1;
 974                         break;
 975                         }
 976                 argc--;
 977                 argv++;
 978                 }
 979         if (badop)
 980                 {
 981 bad:
 982                 sc_usage();
 983                 goto end;
 984                 }
 985
 986 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
 987         if (jpake_secret)
 988                 {
 989                 if (psk_key)
 990                         {
 991                         BIO_printf(bio_err,
 992                                    "Can't use JPAKE and PSK together\n");
 993                         goto end;
 994                         }
 995                 psk_identity = "JPAKE";
 996                 }
 997
 998         if (cipher)
 999                 {
1000                 BIO_printf(bio_err, "JPAKE sets cipher to PSK\n");
1001                 goto end;
1002                 }
1003         cipher = "PSK";
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 (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1076                 && !RAND_status())
1077                 {
1078                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1079                 }
1080         if (inrand != NULL)
1081                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1082                         app_RAND_load_files(inrand));
1083
1084         if (bio_c_out == NULL)
1085                 {
1086                 if (c_quiet && !c_debug && !c_msg)
1087                         {
1088                         bio_c_out=BIO_new(BIO_s_null());
1089                         }
1090                 else
1091                         {
1092                         if (bio_c_out == NULL)
1093                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1094                         }
1095                 }
1096
1097 #ifndef OPENSSL_NO_SRP
1098         if(!app_passwd(bio_err, srppass, NULL, &srp_arg.srppassin, NULL))
1099                 {
1100                 BIO_printf(bio_err, "Error getting password\n");
1101                 goto end;
1102                 }
1103 #endif
1104
1105         ctx=SSL_CTX_new(meth);
1106         if (ctx == NULL)
1107                 {
1108                 ERR_print_errors(bio_err);
1109                 goto end;
1110                 }
1111
1112         if (vpm)
1113                 SSL_CTX_set1_param(ctx, vpm);
1114
1115 #ifndef OPENSSL_NO_ENGINE
1116         if (ssl_client_engine)
1117                 {
1118                 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
1119                         {
1120                         BIO_puts(bio_err, "Error setting client auth engine\n");
1121                         ERR_print_errors(bio_err);
1122                         ENGINE_free(ssl_client_engine);
1123                         goto end;
1124                         }
1125                 ENGINE_free(ssl_client_engine);
1126                 }
1127 #endif
1128
1129 #ifndef OPENSSL_NO_PSK
1130 #ifdef OPENSSL_NO_JPAKE
1131         if (psk_key != NULL)
1132 #else
1133         if (psk_key != NULL || jpake_secret)
1134 #endif
1135                 {
1136                 if (c_debug)
1137                         BIO_printf(bio_c_out, "PSK key given or JPAKE in use, setting client callback\n");
1138                 SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
1139                 }
1140         if (srtp_profiles != NULL)
1141                 SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
1142 #endif
1143         if (bugs)
1144                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
1145         else
1146                 SSL_CTX_set_options(ctx,off);
1147
1148         if (clr)
1149                 SSL_CTX_clear_options(ctx, clr);
1150         /* DTLS: partial reads end up discarding unread UDP bytes :-(
1151          * Setting read ahead solves this problem.
1152          */
1153         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1154
1155 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1156         if (next_proto.data)
1157                 SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
1158 #endif
1159
1160         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1161         if (cipher != NULL)
1162                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
1163                 BIO_printf(bio_err,"error setting cipher list\n");
1164                 ERR_print_errors(bio_err);
1165                 goto end;
1166         }
1167 #if 0
1168         else
1169                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
1170 #endif
1171
1172         SSL_CTX_set_verify(ctx,verify,verify_callback);
1173         if (!set_cert_key_stuff(ctx,cert,key))
1174                 goto end;
1175
1176         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1177                 (!SSL_CTX_set_default_verify_paths(ctx)))
1178                 {
1179                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
1180                 ERR_print_errors(bio_err);
1181                 /* goto end; */
1182                 }
1183
1184 #ifndef OPENSSL_NO_TLSEXT
1185         if (curves != NULL)
1186                 if(!SSL_CTX_set1_curves_list(ctx,curves)) {
1187                 BIO_printf(bio_err,"error setting curve list\n");
1188                 ERR_print_errors(bio_err);
1189                 goto end;
1190         }
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 #endif
1216
1217         con=SSL_new(ctx);
1218         if (sess_in)
1219                 {
1220                 SSL_SESSION *sess;
1221                 BIO *stmp = BIO_new_file(sess_in, "r");
1222                 if (!stmp)
1223                         {
1224                         BIO_printf(bio_err, "Can't open session file %s\n",
1225                                                 sess_in);
1226                         ERR_print_errors(bio_err);
1227                         goto end;
1228                         }
1229                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
1230                 BIO_free(stmp);
1231                 if (!sess)
1232                         {
1233                         BIO_printf(bio_err, "Can't open session file %s\n",
1234                                                 sess_in);
1235                         ERR_print_errors(bio_err);
1236                         goto end;
1237                         }
1238                 SSL_set_session(con, sess);
1239                 SSL_SESSION_free(sess);
1240                 }
1241 #ifndef OPENSSL_NO_TLSEXT
1242         if (servername != NULL)
1243                 {
1244                 if (!SSL_set_tlsext_host_name(con,servername))
1245                         {
1246                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
1247                         ERR_print_errors(bio_err);
1248                         goto end;
1249                         }
1250                 }
1251 #endif
1252 #ifndef OPENSSL_NO_KRB5
1253         if (con  &&  (kctx = kssl_ctx_new()) != NULL)
1254                 {
1255                 SSL_set0_kssl_ctx(con, kctx);
1256                 kssl_ctx_setstring(kctx, KSSL_SERVER, host);
1257                 }
1258 #endif  /* OPENSSL_NO_KRB5  */
1259 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
1260 #if 0
1261 #ifdef TLSEXT_TYPE_opaque_prf_input
1262         SSL_set_tlsext_opaque_prf_input(con, "Test client", 11);
1263 #endif
1264 #endif
1265
1266 re_start:
1267
1268         if (init_client(&s,host,port,socket_type) == 0)
1269                 {
1270                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
1271                 SHUTDOWN(s);
1272                 goto end;
1273                 }
1274         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
1275
1276 #ifdef FIONBIO
1277         if (c_nbio)
1278                 {
1279                 unsigned long l=1;
1280                 BIO_printf(bio_c_out,"turning on non blocking io\n");
1281                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
1282                         {
1283                         ERR_print_errors(bio_err);
1284                         goto end;
1285                         }
1286                 }
1287 #endif
1288         if (c_Pause & 0x01) SSL_set_debug(con, 1);
1289
1290         if ( SSL_version(con) == DTLS1_VERSION)
1291                 {
1292
1293                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1294                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
1295                         {
1296                         BIO_printf(bio_err, "getsockname:errno=%d\n",
1297                                 get_last_socket_error());
1298                         SHUTDOWN(s);
1299                         goto end;
1300                         }
1301
1302                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
1303
1304                 if (enable_timeouts)
1305                         {
1306                         timeout.tv_sec = 0;
1307                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1308                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1309
1310                         timeout.tv_sec = 0;
1311                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1312                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1313                         }
1314
1315                 if (socket_mtu > 28)
1316                         {
1317                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1318                         SSL_set_mtu(con, socket_mtu - 28);
1319                         }
1320                 else
1321                         /* want to do MTU discovery */
1322                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1323                 }
1324         else
1325                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1326
1327         if (nbio_test)
1328                 {
1329                 BIO *test;
1330
1331                 test=BIO_new(BIO_f_nbio_test());
1332                 sbio=BIO_push(test,sbio);
1333                 }
1334
1335         if (c_debug)
1336                 {
1337                 SSL_set_debug(con, 1);
1338                 BIO_set_callback(sbio,bio_dump_callback);
1339                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
1340                 }
1341         if (c_msg)
1342                 {
1343                 SSL_set_msg_callback(con, msg_cb);
1344                 SSL_set_msg_callback_arg(con, bio_c_out);
1345                 }
1346 #ifndef OPENSSL_NO_TLSEXT
1347         if (c_tlsextdebug)
1348                 {
1349                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
1350                 SSL_set_tlsext_debug_arg(con, bio_c_out);
1351                 }
1352         if (c_status_req)
1353                 {
1354                 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
1355                 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
1356                 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
1357 #if 0
1358 {
1359 STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
1360 OCSP_RESPID *id = OCSP_RESPID_new();
1361 id->value.byKey = ASN1_OCTET_STRING_new();
1362 id->type = V_OCSP_RESPID_KEY;
1363 ASN1_STRING_set(id->value.byKey, "Hello World", -1);
1364 sk_OCSP_RESPID_push(ids, id);
1365 SSL_set_tlsext_status_ids(con, ids);
1366 }
1367 #endif
1368                 }
1369 #endif
1370 #ifndef OPENSSL_NO_JPAKE
1371         if (jpake_secret)
1372                 jpake_client_auth(bio_c_out, sbio, jpake_secret);
1373 #endif
1374
1375         SSL_set_bio(con,sbio,sbio);
1376         SSL_set_connect_state(con);
1377
1378         /* ok, lets connect */
1379         width=SSL_get_fd(con)+1;
1380
1381         read_tty=1;
1382         write_tty=0;
1383         tty_on=0;
1384         read_ssl=1;
1385         write_ssl=1;
1386
1387         cbuf_len=0;
1388         cbuf_off=0;
1389         sbuf_len=0;
1390         sbuf_off=0;
1391
1392         /* This is an ugly hack that does a lot of assumptions */
1393         /* We do have to handle multi-line responses which may come
1394            in a single packet or not. We therefore have to use
1395            BIO_gets() which does need a buffering BIO. So during
1396            the initial chitchat we do push a buffering BIO into the
1397            chain that is removed again later on to not disturb the
1398            rest of the s_client operation. */
1399         if (starttls_proto == PROTO_SMTP)
1400                 {
1401                 int foundit=0;
1402                 BIO *fbio = BIO_new(BIO_f_buffer());
1403                 BIO_push(fbio, sbio);
1404                 /* wait for multi-line response to end from SMTP */
1405                 do
1406                         {
1407                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1408                         }
1409                 while (mbuf_len>3 && mbuf[3]=='-');
1410                 /* STARTTLS command requires EHLO... */
1411                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
1412                 (void)BIO_flush(fbio);
1413                 /* wait for multi-line response to end EHLO SMTP response */
1414                 do
1415                         {
1416                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1417                         if (strstr(mbuf,"STARTTLS"))
1418                                 foundit=1;
1419                         }
1420                 while (mbuf_len>3 && mbuf[3]=='-');
1421                 (void)BIO_flush(fbio);
1422                 BIO_pop(fbio);
1423                 BIO_free(fbio);
1424                 if (!foundit)
1425                         BIO_printf(bio_err,
1426                                    "didn't found starttls in server response,"
1427                                    " try anyway...\n");
1428                 BIO_printf(sbio,"STARTTLS\r\n");
1429                 BIO_read(sbio,sbuf,BUFSIZZ);
1430                 }
1431         else if (starttls_proto == PROTO_POP3)
1432                 {
1433                 BIO_read(sbio,mbuf,BUFSIZZ);
1434                 BIO_printf(sbio,"STLS\r\n");
1435                 BIO_read(sbio,sbuf,BUFSIZZ);
1436                 }
1437         else if (starttls_proto == PROTO_IMAP)
1438                 {
1439                 int foundit=0;
1440                 BIO *fbio = BIO_new(BIO_f_buffer());
1441                 BIO_push(fbio, sbio);
1442                 BIO_gets(fbio,mbuf,BUFSIZZ);
1443                 /* STARTTLS command requires CAPABILITY... */
1444                 BIO_printf(fbio,". CAPABILITY\r\n");
1445                 (void)BIO_flush(fbio);
1446                 /* wait for multi-line CAPABILITY response */
1447                 do
1448                         {
1449                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1450                         if (strstr(mbuf,"STARTTLS"))
1451                                 foundit=1;
1452                         }
1453                 while (mbuf_len>3 && mbuf[0]!='.');
1454                 (void)BIO_flush(fbio);
1455                 BIO_pop(fbio);
1456                 BIO_free(fbio);
1457                 if (!foundit)
1458                         BIO_printf(bio_err,
1459                                    "didn't found STARTTLS in server response,"
1460                                    " try anyway...\n");
1461                 BIO_printf(sbio,". STARTTLS\r\n");
1462                 BIO_read(sbio,sbuf,BUFSIZZ);
1463                 }
1464         else if (starttls_proto == PROTO_FTP)
1465                 {
1466                 BIO *fbio = BIO_new(BIO_f_buffer());
1467                 BIO_push(fbio, sbio);
1468                 /* wait for multi-line response to end from FTP */
1469                 do
1470                         {
1471                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1472                         }
1473                 while (mbuf_len>3 && mbuf[3]=='-');
1474                 (void)BIO_flush(fbio);
1475                 BIO_pop(fbio);
1476                 BIO_free(fbio);
1477                 BIO_printf(sbio,"AUTH TLS\r\n");
1478                 BIO_read(sbio,sbuf,BUFSIZZ);
1479                 }
1480         if (starttls_proto == PROTO_XMPP)
1481                 {
1482                 int seen = 0;
1483                 BIO_printf(sbio,"<stream:stream "
1484                     "xmlns:stream='http://etherx.jabber.org/streams' "
1485                     "xmlns='jabber:client' to='%s' version='1.0'>", host);
1486                 seen = BIO_read(sbio,mbuf,BUFSIZZ);
1487                 mbuf[seen] = 0;
1488                 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
1489                         {
1490                         if (strstr(mbuf, "/stream:features>"))
1491                                 goto shut;
1492                         seen = BIO_read(sbio,mbuf,BUFSIZZ);
1493                         mbuf[seen] = 0;
1494                         }
1495                 BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1496                 seen = BIO_read(sbio,sbuf,BUFSIZZ);
1497                 sbuf[seen] = 0;
1498                 if (!strstr(sbuf, "<proceed"))
1499                         goto shut;
1500                 mbuf[0] = 0;
1501                 }
1502
1503         for (;;)
1504                 {
1505                 FD_ZERO(&readfds);
1506                 FD_ZERO(&writefds);
1507
1508                 if ((SSL_version(con) == DTLS1_VERSION) &&
1509                         DTLSv1_get_timeout(con, &timeout))
1510                         timeoutp = &timeout;
1511                 else
1512                         timeoutp = NULL;
1513
1514                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1515                         {
1516                         in_init=1;
1517                         tty_on=0;
1518                         }
1519                 else
1520                         {
1521                         tty_on=1;
1522                         if (in_init)
1523                                 {
1524                                 in_init=0;
1525 #if 0 /* This test doesn't really work as intended (needs to be fixed) */
1526 #ifndef OPENSSL_NO_TLSEXT
1527                                 if (servername != NULL && !SSL_session_reused(con))
1528                                         {
1529                                         BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
1530                                         }
1531 #endif
1532 #endif
1533                                 if (sess_out)
1534                                         {
1535                                         BIO *stmp = BIO_new_file(sess_out, "w");
1536                                         if (stmp)
1537                                                 {
1538                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1539                                                 BIO_free(stmp);
1540                                                 }
1541                                         else
1542                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1543                                         }
1544                                 print_stuff(bio_c_out,con,full_log);
1545                                 if (full_log > 0) full_log--;
1546
1547                                 if (starttls_proto)
1548                                         {
1549                                         BIO_printf(bio_err,"%s",mbuf);
1550                                         /* We don't need to know any more */
1551                                         starttls_proto = PROTO_OFF;
1552                                         }
1553
1554                                 if (reconnect)
1555                                         {
1556                                         reconnect--;
1557                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1558                                         SSL_shutdown(con);
1559                                         SSL_set_connect_state(con);
1560                                         SHUTDOWN(SSL_get_fd(con));
1561                                         goto re_start;
1562                                         }
1563                                 }
1564                         }
1565
1566                 ssl_pending = read_ssl && SSL_pending(con);
1567
1568                 if (!ssl_pending)
1569                         {
1570 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
1571                         if (tty_on)
1572                                 {
1573                                 if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
1574                                 if (write_tty) openssl_fdset(fileno(stdout),&writefds);
1575                                 }
1576                         if (read_ssl)
1577                                 openssl_fdset(SSL_get_fd(con),&readfds);
1578                         if (write_ssl)
1579                                 openssl_fdset(SSL_get_fd(con),&writefds);
1580 #else
1581                         if(!tty_on || !write_tty) {
1582                                 if (read_ssl)
1583                                         openssl_fdset(SSL_get_fd(con),&readfds);
1584                                 if (write_ssl)
1585                                         openssl_fdset(SSL_get_fd(con),&writefds);
1586                         }
1587 #endif
1588 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1589                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1590
1591                         /* Note: under VMS with SOCKETSHR the second parameter
1592                          * is currently of type (int *) whereas under other
1593                          * systems it is (void *) if you don't have a cast it
1594                          * will choke the compiler: if you do have a cast then
1595                          * you can either go for (int *) or (void *).
1596                          */
1597 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1598                         /* Under Windows/DOS we make the assumption that we can
1599                          * always write to the tty: therefore if we need to
1600                          * write to the tty we just fall through. Otherwise
1601                          * we timeout the select every second and see if there
1602                          * are any keypresses. Note: this is a hack, in a proper
1603                          * Windows application we wouldn't do this.
1604                          */
1605                         i=0;
1606                         if(!write_tty) {
1607                                 if(read_tty) {
1608                                         tv.tv_sec = 1;
1609                                         tv.tv_usec = 0;
1610                                         i=select(width,(void *)&readfds,(void *)&writefds,
1611                                                  NULL,&tv);
1612 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1613                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1614 #else
1615                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1616 #endif
1617                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1618                                          NULL,timeoutp);
1619                         }
1620 #elif defined(OPENSSL_SYS_NETWARE)
1621                         if(!write_tty) {
1622                                 if(read_tty) {
1623                                         tv.tv_sec = 1;
1624                                         tv.tv_usec = 0;
1625                                         i=select(width,(void *)&readfds,(void *)&writefds,
1626                                                 NULL,&tv);
1627                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1628                                         NULL,timeoutp);
1629                         }
1630 #elif defined(OPENSSL_SYS_BEOS_R5)
1631                         /* Under BeOS-R5 the situation is similar to DOS */
1632                         i=0;
1633                         stdin_set = 0;
1634                         (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
1635                         if(!write_tty) {
1636                                 if(read_tty) {
1637                                         tv.tv_sec = 1;
1638                                         tv.tv_usec = 0;
1639                                         i=select(width,(void *)&readfds,(void *)&writefds,
1640                                                  NULL,&tv);
1641                                         if (read(fileno(stdin), sbuf, 0) >= 0)
1642                                                 stdin_set = 1;
1643                                         if (!i && (stdin_set != 1 || !read_tty))
1644                                                 continue;
1645                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1646                                          NULL,timeoutp);
1647                         }
1648                         (void)fcntl(fileno(stdin), F_SETFL, 0);
1649 #else
1650                         i=select(width,(void *)&readfds,(void *)&writefds,
1651                                  NULL,timeoutp);
1652 #endif
1653                         if ( i < 0)
1654                                 {
1655                                 BIO_printf(bio_err,"bad select %d\n",
1656                                 get_last_socket_error());
1657                                 goto shut;
1658                                 /* goto end; */
1659                                 }
1660                         }
1661
1662                 if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
1663                         {
1664                         BIO_printf(bio_err,"TIMEOUT occured\n");
1665                         }
1666
1667                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1668                         {
1669                         k=SSL_write(con,&(cbuf[cbuf_off]),
1670                                 (unsigned int)cbuf_len);
1671                         switch (SSL_get_error(con,k))
1672                                 {
1673                         case SSL_ERROR_NONE:
1674                                 cbuf_off+=k;
1675                                 cbuf_len-=k;
1676                                 if (k <= 0) goto end;
1677                                 /* we have done a  write(con,NULL,0); */
1678                                 if (cbuf_len <= 0)
1679                                         {
1680                                         read_tty=1;
1681                                         write_ssl=0;
1682                                         }
1683                                 else /* if (cbuf_len > 0) */
1684                                         {
1685                                         read_tty=0;
1686                                         write_ssl=1;
1687                                         }
1688                                 break;
1689                         case SSL_ERROR_WANT_WRITE:
1690                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1691                                 write_ssl=1;
1692                                 read_tty=0;
1693                                 break;
1694                         case SSL_ERROR_WANT_READ:
1695                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1696                                 write_tty=0;
1697                                 read_ssl=1;
1698                                 write_ssl=0;
1699                                 break;
1700                         case SSL_ERROR_WANT_X509_LOOKUP:
1701                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1702                                 break;
1703                         case SSL_ERROR_ZERO_RETURN:
1704                                 if (cbuf_len != 0)
1705                                         {
1706                                         BIO_printf(bio_c_out,"shutdown\n");
1707                                         ret = 0;
1708                                         goto shut;
1709                                         }
1710                                 else
1711                                         {
1712                                         read_tty=1;
1713                                         write_ssl=0;
1714                                         break;
1715                                         }
1716
1717                         case SSL_ERROR_SYSCALL:
1718                                 if ((k != 0) || (cbuf_len != 0))
1719                                         {
1720                                         BIO_printf(bio_err,"write:errno=%d\n",
1721                                                 get_last_socket_error());
1722                                         goto shut;
1723                                         }
1724                                 else
1725                                         {
1726                                         read_tty=1;
1727                                         write_ssl=0;
1728                                         }
1729                                 break;
1730                         case SSL_ERROR_SSL:
1731                                 ERR_print_errors(bio_err);
1732                                 goto shut;
1733                                 }
1734                         }
1735 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
1736                 /* Assume Windows/DOS/BeOS can always write */
1737                 else if (!ssl_pending && write_tty)
1738 #else
1739                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1740 #endif
1741                         {
1742 #ifdef CHARSET_EBCDIC
1743                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1744 #endif
1745                         i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
1746
1747                         if (i <= 0)
1748                                 {
1749                                 BIO_printf(bio_c_out,"DONE\n");
1750                                 ret = 0;
1751                                 goto shut;
1752                                 /* goto end; */
1753                                 }
1754
1755                         sbuf_len-=i;;
1756                         sbuf_off+=i;
1757                         if (sbuf_len <= 0)
1758                                 {
1759                                 read_ssl=1;
1760                                 write_tty=0;
1761                                 }
1762                         }
1763                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1764                         {
1765 #ifdef RENEG
1766 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1767 #endif
1768 #if 1
1769                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1770 #else
1771 /* Demo for pending and peek :-) */
1772                         k=SSL_read(con,sbuf,16);
1773 { char zbuf[10240];
1774 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1775 }
1776 #endif
1777
1778                         switch (SSL_get_error(con,k))
1779                                 {
1780                         case SSL_ERROR_NONE:
1781                                 if (k <= 0)
1782                                         goto end;
1783                                 sbuf_off=0;
1784                                 sbuf_len=k;
1785
1786                                 read_ssl=0;
1787                                 write_tty=1;
1788                                 break;
1789                         case SSL_ERROR_WANT_WRITE:
1790                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1791                                 write_ssl=1;
1792                                 read_tty=0;
1793                                 break;
1794                         case SSL_ERROR_WANT_READ:
1795                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1796                                 write_tty=0;
1797                                 read_ssl=1;
1798                                 if ((read_tty == 0) && (write_ssl == 0))
1799                                         write_ssl=1;
1800                                 break;
1801                         case SSL_ERROR_WANT_X509_LOOKUP:
1802                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1803                                 break;
1804                         case SSL_ERROR_SYSCALL:
1805                                 ret=get_last_socket_error();
1806                                 BIO_printf(bio_err,"read:errno=%d\n",ret);
1807                                 goto shut;
1808                         case SSL_ERROR_ZERO_RETURN:
1809                                 BIO_printf(bio_c_out,"closed\n");
1810                                 ret=0;
1811                                 goto shut;
1812                         case SSL_ERROR_SSL:
1813                                 ERR_print_errors(bio_err);
1814                                 goto shut;
1815                                 /* break; */
1816                                 }
1817                         }
1818
1819 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1820 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1821                 else if (_kbhit())
1822 #else
1823                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1824 #endif
1825 #elif defined (OPENSSL_SYS_NETWARE)
1826                 else if (_kbhit())
1827 #elif defined(OPENSSL_SYS_BEOS_R5)
1828                 else if (stdin_set)
1829 #else
1830                 else if (FD_ISSET(fileno(stdin),&readfds))
1831 #endif
1832                         {
1833                         if (crlf)
1834                                 {
1835                                 int j, lf_num;
1836
1837                                 i=raw_read_stdin(cbuf,BUFSIZZ/2);
1838                                 lf_num = 0;
1839                                 /* both loops are skipped when i <= 0 */
1840                                 for (j = 0; j < i; j++)
1841                                         if (cbuf[j] == '\n')
1842                                                 lf_num++;
1843                                 for (j = i-1; j >= 0; j--)
1844                                         {
1845                                         cbuf[j+lf_num] = cbuf[j];
1846                                         if (cbuf[j] == '\n')
1847                                                 {
1848                                                 lf_num--;
1849                                                 i++;
1850                                                 cbuf[j+lf_num] = '\r';
1851                                                 }
1852                                         }
1853                                 assert(lf_num == 0);
1854                                 }
1855                         else
1856                                 i=raw_read_stdin(cbuf,BUFSIZZ);
1857
1858                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1859                                 {
1860                                 BIO_printf(bio_err,"DONE\n");
1861                                 ret=0;
1862                                 goto shut;
1863                                 }
1864
1865                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1866                                 {
1867                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1868                                 SSL_renegotiate(con);
1869                                 cbuf_len=0;
1870                                 }
1871 #ifndef OPENSSL_NO_HEARTBEATS
1872                         else if ((!c_ign_eof) && (cbuf[0] == 'B'))
1873                                 {
1874                                 BIO_printf(bio_err,"HEARTBEATING\n");
1875                                 SSL_heartbeat(con);
1876                                 cbuf_len=0;
1877                                 }
1878 #endif
1879                         else
1880                                 {
1881                                 cbuf_len=i;
1882                                 cbuf_off=0;
1883 #ifdef CHARSET_EBCDIC
1884                                 ebcdic2ascii(cbuf, cbuf, i);
1885 #endif
1886                                 }
1887
1888                         write_ssl=1;
1889                         read_tty=0;
1890                         }
1891                 }
1892
1893         ret=0;
1894 shut:
1895         if (in_init)
1896                 print_stuff(bio_c_out,con,full_log);
1897         SSL_shutdown(con);
1898         SHUTDOWN(SSL_get_fd(con));
1899 end:
1900         if (con != NULL)
1901                 {
1902                 if (prexit != 0)
1903                         print_stuff(bio_c_out,con,1);
1904                 SSL_free(con);
1905                 }
1906         if (ctx != NULL) SSL_CTX_free(ctx);
1907         if (cert)
1908                 X509_free(cert);
1909         if (key)
1910                 EVP_PKEY_free(key);
1911         if (pass)
1912                 OPENSSL_free(pass);
1913         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1914         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1915         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1916         if (bio_c_out != NULL)
1917                 {
1918                 BIO_free(bio_c_out);
1919                 bio_c_out=NULL;
1920                 }
1921         apps_shutdown();
1922         OPENSSL_EXIT(ret);
1923         }
1924
1925
1926 static void print_stuff(BIO *bio, SSL *s, int full)
1927         {
1928         X509 *peer=NULL;
1929         char *p;
1930         static const char *space="                ";
1931         char buf[BUFSIZ];
1932         STACK_OF(X509) *sk;
1933         STACK_OF(X509_NAME) *sk2;
1934         const SSL_CIPHER *c;
1935         X509_NAME *xn;
1936         int j,i;
1937 #ifndef OPENSSL_NO_COMP
1938         const COMP_METHOD *comp, *expansion;
1939 #endif
1940         unsigned char *exportedkeymat;
1941
1942         if (full)
1943                 {
1944                 int got_a_chain = 0;
1945
1946                 sk=SSL_get_peer_cert_chain(s);
1947                 if (sk != NULL)
1948                         {
1949                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1950
1951                         BIO_printf(bio,"---\nCertificate chain\n");
1952                         for (i=0; i<sk_X509_num(sk); i++)
1953                                 {
1954                                 X509_NAME_oneline(X509_get_subject_name(
1955                                         sk_X509_value(sk,i)),buf,sizeof buf);
1956                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1957                                 X509_NAME_oneline(X509_get_issuer_name(
1958                                         sk_X509_value(sk,i)),buf,sizeof buf);
1959                                 BIO_printf(bio,"   i:%s\n",buf);
1960                                 if (c_showcerts)
1961                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1962                                 }
1963                         }
1964
1965                 BIO_printf(bio,"---\n");
1966                 peer=SSL_get_peer_certificate(s);
1967                 if (peer != NULL)
1968                         {
1969                         BIO_printf(bio,"Server certificate\n");
1970                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1971                                 PEM_write_bio_X509(bio,peer);
1972                         X509_NAME_oneline(X509_get_subject_name(peer),
1973                                 buf,sizeof buf);
1974                         BIO_printf(bio,"subject=%s\n",buf);
1975                         X509_NAME_oneline(X509_get_issuer_name(peer),
1976                                 buf,sizeof buf);
1977                         BIO_printf(bio,"issuer=%s\n",buf);
1978                         }
1979                 else
1980                         BIO_printf(bio,"no peer certificate available\n");
1981
1982                 sk2=SSL_get_client_CA_list(s);
1983                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
1984                         {
1985                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
1986                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
1987                                 {
1988                                 xn=sk_X509_NAME_value(sk2,i);
1989                                 X509_NAME_oneline(xn,buf,sizeof(buf));
1990                                 BIO_write(bio,buf,strlen(buf));
1991                                 BIO_write(bio,"\n",1);
1992                                 }
1993                         }
1994                 else
1995                         {
1996                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
1997                         }
1998                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
1999                 if (p != NULL)
2000                         {
2001                         /* This works only for SSL 2.  In later protocol
2002                          * versions, the client does not know what other
2003                          * ciphers (in addition to the one to be used
2004                          * in the current connection) the server supports. */
2005
2006                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
2007                         j=i=0;
2008                         while (*p)
2009                                 {
2010                                 if (*p == ':')
2011                                         {
2012                                         BIO_write(bio,space,15-j%25);
2013                                         i++;
2014                                         j=0;
2015                                         BIO_write(bio,((i%3)?" ":"\n"),1);
2016                                         }
2017                                 else
2018                                         {
2019                                         BIO_write(bio,p,1);
2020                                         j++;
2021                                         }
2022                                 p++;
2023                                 }
2024                         BIO_write(bio,"\n",1);
2025                         }
2026
2027                 ssl_print_sigalgs(bio, s);
2028
2029                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
2030                         BIO_number_read(SSL_get_rbio(s)),
2031                         BIO_number_written(SSL_get_wbio(s)));
2032                 }
2033         BIO_printf(bio,(SSL_cache_hit(s)?"---\nReused, ":"---\nNew, "));
2034         c=SSL_get_current_cipher(s);
2035         BIO_printf(bio,"%s, Cipher is %s\n",
2036                 SSL_CIPHER_get_version(c),
2037                 SSL_CIPHER_get_name(c));
2038         if (peer != NULL) {
2039                 EVP_PKEY *pktmp;
2040                 pktmp = X509_get_pubkey(peer);
2041                 BIO_printf(bio,"Server public key is %d bit\n",
2042                                                          EVP_PKEY_bits(pktmp));
2043                 EVP_PKEY_free(pktmp);
2044         }
2045         BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
2046                         SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
2047 #ifndef OPENSSL_NO_COMP
2048         comp=SSL_get_current_compression(s);
2049         expansion=SSL_get_current_expansion(s);
2050         BIO_printf(bio,"Compression: %s\n",
2051                 comp ? SSL_COMP_get_name(comp) : "NONE");
2052         BIO_printf(bio,"Expansion: %s\n",
2053                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
2054 #endif
2055
2056 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2057         if (next_proto.status != -1) {
2058                 const unsigned char *proto;
2059                 unsigned int proto_len;
2060                 SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
2061                 BIO_printf(bio, "Next protocol: (%d) ", next_proto.status);
2062                 BIO_write(bio, proto, proto_len);
2063                 BIO_write(bio, "\n", 1);
2064         }
2065 #endif
2066
2067 #ifdef SSL_DEBUG
2068         {
2069         /* Print out local port of connection: useful for debugging */
2070         int sock;
2071         struct sockaddr_in ladd;
2072         socklen_t ladd_size = sizeof(ladd);
2073         sock = SSL_get_fd(s);
2074         getsockname(sock, (struct sockaddr *)&ladd, &ladd_size);
2075         BIO_printf(bio_c_out, "LOCAL PORT is %u\n", ntohs(ladd.sin_port));
2076         }
2077 #endif
2078
2079         {
2080         SRTP_PROTECTION_PROFILE *srtp_profile=SSL_get_selected_srtp_profile(s);
2081
2082         if(srtp_profile)
2083                 BIO_printf(bio,"SRTP Extension negotiated, profile=%s\n",
2084                            srtp_profile->name);
2085         }
2086
2087         SSL_SESSION_print(bio,SSL_get_session(s));
2088         if (keymatexportlabel != NULL)
2089                 {
2090                 BIO_printf(bio, "Keying material exporter:\n");
2091                 BIO_printf(bio, "    Label: '%s'\n", keymatexportlabel);
2092                 BIO_printf(bio, "    Length: %i bytes\n", keymatexportlen);
2093                 exportedkeymat = OPENSSL_malloc(keymatexportlen);
2094                 if (exportedkeymat != NULL)
2095                         {
2096                         if (!SSL_export_keying_material(s, exportedkeymat,
2097                                                         keymatexportlen,
2098                                                         keymatexportlabel,
2099                                                         strlen(keymatexportlabel),
2100                                                         NULL, 0, 0))
2101                                 {
2102                                 BIO_printf(bio, "    Error\n");
2103                                 }
2104                         else
2105                                 {
2106                                 BIO_printf(bio, "    Keying material: ");
2107                                 for (i=0; i<keymatexportlen; i++)
2108                                         BIO_printf(bio, "%02X",
2109                                                    exportedkeymat[i]);
2110                                 BIO_printf(bio, "\n");
2111                                 }
2112                         OPENSSL_free(exportedkeymat);
2113                         }
2114                 }
2115         BIO_printf(bio,"---\n");
2116         if (peer != NULL)
2117                 X509_free(peer);
2118         /* flush, or debugging output gets mixed with http response */
2119         (void)BIO_flush(bio);
2120         }
2121
2122 #ifndef OPENSSL_NO_TLSEXT
2123
2124 static int ocsp_resp_cb(SSL *s, void *arg)
2125         {
2126         const unsigned char *p;
2127         int len;
2128         OCSP_RESPONSE *rsp;
2129         len = SSL_get_tlsext_status_ocsp_resp(s, &p);
2130         BIO_puts(arg, "OCSP response: ");
2131         if (!p)
2132                 {
2133                 BIO_puts(arg, "no response sent\n");
2134                 return 1;
2135                 }
2136         rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
2137         if (!rsp)
2138                 {
2139                 BIO_puts(arg, "response parse error\n");
2140                 BIO_dump_indent(arg, (char *)p, len, 4);
2141                 return 0;
2142                 }
2143         BIO_puts(arg, "\n======================================\n");
2144         OCSP_RESPONSE_print(arg, rsp, 0);
2145         BIO_puts(arg, "======================================\n");
2146         OCSP_RESPONSE_free(rsp);
2147         return 1;
2148         }
2149
2150 #endif