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 void sc_usage(void);
 210 static void print_stuff(BIO *berr,SSL *con,int full);
 211 #ifndef OPENSSL_NO_TLSEXT
 212 static int ocsp_resp_cb(SSL *s, void *arg);
 213 #endif
 214 static BIO *bio_c_out=NULL;
 215 static int c_quiet=0;
 216 static int c_ign_eof=0;
 217
 218 #ifndef OPENSSL_NO_PSK
 219 /* Default PSK identity and key */
 220 static char *psk_identity="Client_identity";
 221 /*char *psk_key=NULL;  by default PSK is not used */
 222
 223 static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity,
 224         unsigned int max_identity_len, unsigned char *psk,
 225         unsigned int max_psk_len)
 226         {
 227         unsigned int psk_len = 0;
 228         int ret;
 229         BIGNUM *bn=NULL;
 230
 231         if (c_debug)
 232                 BIO_printf(bio_c_out, "psk_client_cb\n");
 233         if (!hint)
 234                 {
 235                 /* no ServerKeyExchange message*/
 236                 if (c_debug)
 237                         BIO_printf(bio_c_out,"NULL received PSK identity hint, continuing anyway\n");
 238                 }
 239         else if (c_debug)
 240                 BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint);
 241
 242         /* lookup PSK identity and PSK key based on the given identity hint here */
 243         ret = BIO_snprintf(identity, max_identity_len, "%s", psk_identity);
 244         if (ret < 0 || (unsigned int)ret > max_identity_len)
 245                 goto out_err;
 246         if (c_debug)
 247                 BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity, ret);
 248         ret=BN_hex2bn(&bn, psk_key);
 249         if (!ret)
 250                 {
 251                 BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
 252                 if (bn)
 253                         BN_free(bn);
 254                 return 0;
 255                 }
 256
 257         if ((unsigned int)BN_num_bytes(bn) > max_psk_len)
 258                 {
 259                 BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
 260                         max_psk_len, BN_num_bytes(bn));
 261                 BN_free(bn);
 262                 return 0;
 263                 }
 264
 265         psk_len=BN_bn2bin(bn, psk);
 266         BN_free(bn);
 267         if (psk_len == 0)
 268                 goto out_err;
 269
 270         if (c_debug)
 271                 BIO_printf(bio_c_out, "created PSK len=%d\n", psk_len);
 272
 273         return psk_len;
 274  out_err:
 275         if (c_debug)
 276                 BIO_printf(bio_err, "Error in PSK client callback\n");
 277         return 0;
 278         }
 279 #endif
 280
 281 static void sc_usage(void)
 282         {
 283         BIO_printf(bio_err,"usage: s_client args\n");
 284         BIO_printf(bio_err,"\n");
 285         BIO_printf(bio_err," -host host     - use -connect instead\n");
 286         BIO_printf(bio_err," -port port     - use -connect instead\n");
 287         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 288
 289         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 290         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 291         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
 292         BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
 293         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 294         BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
 295         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
 296         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 297         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 298         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 299         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 300         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 301         BIO_printf(bio_err," -debug        - extra output\n");
 302 #ifdef WATT32
 303         BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
 304 #endif
 305         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 306         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 307         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 308 #ifdef FIONBIO
 309         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 310 #endif
 311         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 312         BIO_printf(bio_err," -quiet        - no s_client output\n");
 313         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 314         BIO_printf(bio_err," -no_ign_eof   - don't ignore input eof\n");
 315 #ifndef OPENSSL_NO_PSK
 316         BIO_printf(bio_err," -psk_identity arg - PSK identity\n");
 317         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
 318 # ifndef OPENSSL_NO_JPAKE
 319         BIO_printf(bio_err," -jpake arg    - JPAKE secret to use\n");
 320 # endif
 321 #endif
 322 #ifndef OPENSSL_NO_SRP
 323         BIO_printf(bio_err," -srpuser user     - SRP authentification for 'user'\n");
 324         BIO_printf(bio_err," -srppass arg      - password for 'user'\n");
 325         BIO_printf(bio_err," -srp_lateuser     - SRP username into second ClientHello message\n");
 326         BIO_printf(bio_err," -srp_moregroups   - Tolerate other than the known g N values.\n");
 327         BIO_printf(bio_err," -srp_strength int - minimal mength in bits for N (default %d).\n",SRP_MINIMAL_N);
 328 #endif
 329         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 330         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 331         BIO_printf(bio_err," -tls1_1       - just use TLSv1.1\n");
 332         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 333         BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");
 334         BIO_printf(bio_err," -mtu          - set the link layer MTU\n");
 335         BIO_printf(bio_err," -no_tls1_1/-no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 336         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 337         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 338         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 339         BIO_printf(bio_err,"                 command to see what is available\n");
 340         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
 341         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
 342         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
 343         BIO_printf(bio_err,"                 only \"smtp\", \"pop3\", \"imap\", \"ftp\" and \"xmpp\"\n");
 344         BIO_printf(bio_err,"                 are supported.\n");
 345 #ifndef OPENSSL_NO_ENGINE
 346         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 347 #endif
 348         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 349         BIO_printf(bio_err," -sess_out arg - file to write SSL session to\n");
 350         BIO_printf(bio_err," -sess_in arg  - file to read SSL session from\n");
 351 #ifndef OPENSSL_NO_TLSEXT
 352         BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
 353         BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
 354         BIO_printf(bio_err," -status           - request certificate status from server\n");
 355         BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
 356 # ifndef OPENSSL_NO_NEXTPROTONEG
 357         BIO_printf(bio_err," -nextprotoneg arg - enable NPN extension, considering named protocols supported (comma-separated list)\n");
 358 # endif
 359 #endif
 360         BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
 361         }
 362
 363 #ifndef OPENSSL_NO_TLSEXT
 364
 365 /* This is a context that we pass to callbacks */
 366 typedef struct tlsextctx_st {
 367    BIO * biodebug;
 368    int ack;
 369 } tlsextctx;
 370
 371
 372 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
 373         {
 374         tlsextctx * p = (tlsextctx *) arg;
 375         const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
 376         if (SSL_get_servername_type(s) != -1)
 377                 p->ack = !SSL_session_reused(s) && hn != NULL;
 378         else
 379                 BIO_printf(bio_err,"Can't use SSL_get_servername\n");
 380
 381         return SSL_TLSEXT_ERR_OK;
 382         }
 383
 384 #ifndef OPENSSL_NO_SRP
 385
 386 /* This is a context that we pass to all callbacks */
 387 typedef struct srp_arg_st
 388         {
 389         char *srppassin;
 390         char *srplogin;
 391         int msg;   /* copy from c_msg */
 392         int debug; /* copy from c_debug */
 393         int amp;   /* allow more groups */
 394         int strength /* minimal size for N */ ;
 395         } SRP_ARG;
 396
 397 #define SRP_NUMBER_ITERATIONS_FOR_PRIME 64
 398
 399 static int SRP_Verify_N_and_g(const BIGNUM *N, const BIGNUM *g)
 400         {
 401         BN_CTX *bn_ctx = BN_CTX_new();
 402         BIGNUM *p = BN_new();
 403         BIGNUM *r = BN_new();
 404         int ret =
 405                 g != NULL && N != NULL && bn_ctx != NULL && BN_is_odd(N) &&
 406                 BN_is_prime_ex(N,SRP_NUMBER_ITERATIONS_FOR_PRIME,bn_ctx,NULL) &&
 407                 p != NULL && BN_rshift1(p, N) &&
 408
 409                 /* p = (N-1)/2 */
 410                 BN_is_prime_ex(p,SRP_NUMBER_ITERATIONS_FOR_PRIME,bn_ctx,NULL) &&
 411                 r != NULL &&
 412
 413                 /* verify g^((N-1)/2) == -1 (mod N) */
 414                 BN_mod_exp(r, g, p, N, bn_ctx) &&
 415                 BN_add_word(r, 1) &&
 416                 BN_cmp(r, N) == 0;
 417
 418         if(r)
 419                 BN_free(r);
 420         if(p)
 421                 BN_free(p);
 422         if(bn_ctx)
 423                 BN_CTX_free(bn_ctx);
 424         return ret;
 425         }
 426
 427 static int MS_CALLBACK ssl_srp_verify_param_cb(SSL *s, void *arg)
 428         {
 429         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 430         BIGNUM *N = NULL, *g = NULL;
 431         if (!(N = SSL_get_srp_N(s)) || !(g = SSL_get_srp_g(s)))
 432                 return 0;
 433         if (srp_arg->debug || srp_arg->msg || srp_arg->amp == 1)
 434                 {
 435                 BIO_printf(bio_err, "SRP parameters:\n");
 436                 BIO_printf(bio_err,"\tN="); BN_print(bio_err,N);
 437                 BIO_printf(bio_err,"\n\tg="); BN_print(bio_err,g);
 438                 BIO_printf(bio_err,"\n");
 439                 }
 440
 441         if (SRP_check_known_gN_param(g,N))
 442                 return 1;
 443
 444         if (srp_arg->amp == 1)
 445                 {
 446                 if (srp_arg->debug)
 447                         BIO_printf(bio_err, "SRP param N and g are not known params, going to check deeper.\n");
 448
 449 /* The srp_moregroups must be used with caution, testing primes costs time.
 450    Implementors should rather add the value to the known ones.
 451    The minimal size has already been tested.
 452 */
 453                 if (BN_num_bits(g) <= BN_BITS && SRP_Verify_N_and_g(N,g))
 454                         return 1;
 455                 }
 456         BIO_printf(bio_err, "SRP param N and g rejected.\n");
 457         return 0;
 458         }
 459
 460 #define PWD_STRLEN 1024
 461
 462 static char * MS_CALLBACK ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
 463         {
 464         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 465         char *pass = (char *)OPENSSL_malloc(PWD_STRLEN+1);
 466         PW_CB_DATA cb_tmp;
 467         int l;
 468
 469         cb_tmp.password = (char *)srp_arg->srppassin;
 470         cb_tmp.prompt_info = "SRP user";
 471         if ((l = password_callback(pass, PWD_STRLEN, 0, &cb_tmp))<0)
 472                 {
 473                 BIO_printf (bio_err, "Can't read Password\n");
 474                 OPENSSL_free(pass);
 475                 return NULL;
 476                 }
 477         *(pass+l)= '\0';
 478
 479         return pass;
 480         }
 481
 482 static char * MS_CALLBACK missing_srp_username_callback(SSL *s, void *arg)
 483         {
 484         SRP_ARG *srp_arg = (SRP_ARG *)arg;
 485         return BUF_strdup(srp_arg->srplogin);
 486         }
 487
 488 #endif
 489
 490 # ifndef OPENSSL_NO_NEXTPROTONEG
 491 /* This the context that we pass to next_proto_cb */
 492 typedef struct tlsextnextprotoctx_st {
 493         unsigned char *data;
 494         unsigned short len;
 495         int status;
 496 } tlsextnextprotoctx;
 497
 498 static tlsextnextprotoctx next_proto;
 499
 500 static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
 501         {
 502         tlsextnextprotoctx *ctx = arg;
 503
 504         if (!c_quiet)
 505                 {
 506                 /* We can assume that |in| is syntactically valid. */
 507                 unsigned i;
 508                 BIO_printf(bio_c_out, "Protocols advertised by server: ");
 509                 for (i = 0; i < inlen; )
 510                         {
 511                         if (i)
 512                                 BIO_write(bio_c_out, ", ", 2);
 513                         BIO_write(bio_c_out, &in[i + 1], in[i]);
 514                         i += in[i] + 1;
 515                         }
 516                 BIO_write(bio_c_out, "\n", 1);
 517                 }
 518
 519         ctx->status = SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len);
 520         return SSL_TLSEXT_ERR_OK;
 521         }
 522 # endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
 523 #endif
 524
 525 enum
 526 {
 527         PROTO_OFF       = 0,
 528         PROTO_SMTP,
 529         PROTO_POP3,
 530         PROTO_IMAP,
 531         PROTO_FTP,
 532         PROTO_XMPP
 533 };
 534
 535 int MAIN(int, char **);
 536
 537 int MAIN(int argc, char **argv)
 538         {
 539         unsigned int off=0, clr=0;
 540         SSL *con=NULL;
 541         int s,k,width,state=0;
 542         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
 543         int cbuf_len,cbuf_off;
 544         int sbuf_len,sbuf_off;
 545         fd_set readfds,writefds;
 546         short port=PORT;
 547         int full_log=1;
 548         char *host=SSL_HOST_NAME;
 549         char *cert_file=NULL,*key_file=NULL;
 550         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
 551         char *passarg = NULL, *pass = NULL;
 552         X509 *cert = NULL;
 553         EVP_PKEY *key = NULL;
 554         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 555         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 556         int crlf=0;
 557         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 558         SSL_CTX *ctx=NULL;
 559         int ret=1,in_init=1,i,nbio_test=0;
 560         int starttls_proto = PROTO_OFF;
 561         int prexit = 0;
 562         X509_VERIFY_PARAM *vpm = NULL;
 563         int badarg = 0;
 564         const SSL_METHOD *meth=NULL;
 565         int socket_type=SOCK_STREAM;
 566         BIO *sbio;
 567         char *inrand=NULL;
 568         int mbuf_len=0;
 569         struct timeval timeout, *timeoutp;
 570 #ifndef OPENSSL_NO_ENGINE
 571         char *engine_id=NULL;
 572         char *ssl_client_engine_id=NULL;
 573         ENGINE *ssl_client_engine=NULL;
 574 #endif
 575         ENGINE *e=NULL;
 576 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
 577         struct timeval tv;
 578 #if defined(OPENSSL_SYS_BEOS_R5)
 579         int stdin_set = 0;
 580 #endif
 581 #endif
 582 #ifndef OPENSSL_NO_TLSEXT
 583         char *servername = NULL;
 584         tlsextctx tlsextcbp =
 585         {NULL,0};
 586 # ifndef OPENSSL_NO_NEXTPROTONEG
 587         const char *next_proto_neg_in = NULL;
 588 # endif
 589 #endif
 590         char *sess_in = NULL;
 591         char *sess_out = NULL;
 592         struct sockaddr peer;
 593         int peerlen = sizeof(peer);
 594         int enable_timeouts = 0 ;
 595         long socket_mtu = 0;
 596 #ifndef OPENSSL_NO_JPAKE
 597         char *jpake_secret = NULL;
 598 #endif
 599 #ifndef OPENSSL_NO_SRP
 600         char * srppass = NULL;
 601         int srp_lateuser = 0;
 602         SRP_ARG srp_arg = {NULL,NULL,0,0,0,1024};
 603 #endif
 604
 605 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 606         meth=SSLv23_client_method();
 607 #elif !defined(OPENSSL_NO_SSL3)
 608         meth=SSLv3_client_method();
 609 #elif !defined(OPENSSL_NO_SSL2)
 610         meth=SSLv2_client_method();
 611 #endif
 612
 613         apps_startup();
 614         c_Pause=0;
 615         c_quiet=0;
 616         c_ign_eof=0;
 617         c_debug=0;
 618         c_msg=0;
 619         c_showcerts=0;
 620
 621         if (bio_err == NULL)
 622                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 623
 624         if (!load_config(bio_err, NULL))
 625                 goto end;
 626
 627         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 628                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 629                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 630                 {
 631                 BIO_printf(bio_err,"out of memory\n");
 632                 goto end;
 633                 }
 634
 635         verify_depth=0;
 636         verify_error=X509_V_OK;
 637 #ifdef FIONBIO
 638         c_nbio=0;
 639 #endif
 640
 641         argc--;
 642         argv++;
 643         while (argc >= 1)
 644                 {
 645                 if      (strcmp(*argv,"-host") == 0)
 646                         {
 647                         if (--argc < 1) goto bad;
 648                         host= *(++argv);
 649                         }
 650                 else if (strcmp(*argv,"-port") == 0)
 651                         {
 652                         if (--argc < 1) goto bad;
 653                         port=atoi(*(++argv));
 654                         if (port == 0) goto bad;
 655                         }
 656                 else if (strcmp(*argv,"-connect") == 0)
 657                         {
 658                         if (--argc < 1) goto bad;
 659                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 660                                 goto bad;
 661                         }
 662                 else if (strcmp(*argv,"-verify") == 0)
 663                         {
 664                         verify=SSL_VERIFY_PEER;
 665                         if (--argc < 1) goto bad;
 666                         verify_depth=atoi(*(++argv));
 667                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 668                         }
 669                 else if (strcmp(*argv,"-cert") == 0)
 670                         {
 671                         if (--argc < 1) goto bad;
 672                         cert_file= *(++argv);
 673                         }
 674                 else if (strcmp(*argv,"-sess_out") == 0)
 675                         {
 676                         if (--argc < 1) goto bad;
 677                         sess_out = *(++argv);
 678                         }
 679                 else if (strcmp(*argv,"-sess_in") == 0)
 680                         {
 681                         if (--argc < 1) goto bad;
 682                         sess_in = *(++argv);
 683                         }
 684                 else if (strcmp(*argv,"-certform") == 0)
 685                         {
 686                         if (--argc < 1) goto bad;
 687                         cert_format = str2fmt(*(++argv));
 688                         }
 689                 else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm))
 690                         {
 691                         if (badarg)
 692                                 goto bad;
 693                         continue;
 694                         }
 695                 else if (strcmp(*argv,"-verify_return_error") == 0)
 696                         verify_return_error = 1;
 697                 else if (strcmp(*argv,"-prexit") == 0)
 698                         prexit=1;
 699                 else if (strcmp(*argv,"-crlf") == 0)
 700                         crlf=1;
 701                 else if (strcmp(*argv,"-quiet") == 0)
 702                         {
 703                         c_quiet=1;
 704                         c_ign_eof=1;
 705                         }
 706                 else if (strcmp(*argv,"-ign_eof") == 0)
 707                         c_ign_eof=1;
 708                 else if (strcmp(*argv,"-no_ign_eof") == 0)
 709                         c_ign_eof=0;
 710                 else if (strcmp(*argv,"-pause") == 0)
 711                         c_Pause=1;
 712                 else if (strcmp(*argv,"-debug") == 0)
 713                         c_debug=1;
 714 #ifndef OPENSSL_NO_TLSEXT
 715                 else if (strcmp(*argv,"-tlsextdebug") == 0)
 716                         c_tlsextdebug=1;
 717                 else if (strcmp(*argv,"-status") == 0)
 718                         c_status_req=1;
 719 #endif
 720 #ifdef WATT32
 721                 else if (strcmp(*argv,"-wdebug") == 0)
 722                         dbug_init();
 723 #endif
 724                 else if (strcmp(*argv,"-msg") == 0)
 725                         c_msg=1;
 726                 else if (strcmp(*argv,"-showcerts") == 0)
 727                         c_showcerts=1;
 728                 else if (strcmp(*argv,"-nbio_test") == 0)
 729                         nbio_test=1;
 730                 else if (strcmp(*argv,"-state") == 0)
 731                         state=1;
 732 #ifndef OPENSSL_NO_PSK
 733                 else if (strcmp(*argv,"-psk_identity") == 0)
 734                         {
 735                         if (--argc < 1) goto bad;
 736                         psk_identity=*(++argv);
 737                         }
 738                 else if (strcmp(*argv,"-psk") == 0)
 739                         {
 740                         size_t j;
 741
 742                         if (--argc < 1) goto bad;
 743                         psk_key=*(++argv);
 744                         for (j = 0; j < strlen(psk_key); j++)
 745                                 {
 746                                 if (isxdigit((int)psk_key[j]))
 747                                         continue;
 748                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
 749                                 goto bad;
 750                                 }
 751                         }
 752 #endif
 753 #ifndef OPENSSL_NO_SRP
 754                 else if (strcmp(*argv,"-srpuser") == 0)
 755                         {
 756                         if (--argc < 1) goto bad;
 757                         srp_arg.srplogin= *(++argv);
 758                         meth=TLSv1_client_method();
 759                         }
 760                 else if (strcmp(*argv,"-srppass") == 0)
 761                         {
 762                         if (--argc < 1) goto bad;
 763                         srppass= *(++argv);
 764                         meth=TLSv1_client_method();
 765                         }
 766                 else if (strcmp(*argv,"-srp_strength") == 0)
 767                         {
 768                         if (--argc < 1) goto bad;
 769                         srp_arg.strength=atoi(*(++argv));
 770                         BIO_printf(bio_err,"SRP minimal length for N is %d\n",srp_arg.strength);
 771                         meth=TLSv1_client_method();
 772                         }
 773                 else if (strcmp(*argv,"-srp_lateuser") == 0)
 774                         {
 775                         srp_lateuser= 1;
 776                         meth=TLSv1_client_method();
 777                         }
 778                 else if (strcmp(*argv,"-srp_moregroups") == 0)
 779                         {
 780                         srp_arg.amp=1;
 781                         meth=TLSv1_client_method();
 782                         }
 783 #endif
 784 #ifndef OPENSSL_NO_SSL2
 785                 else if (strcmp(*argv,"-ssl2") == 0)
 786                         meth=SSLv2_client_method();
 787 #endif
 788 #ifndef OPENSSL_NO_SSL3
 789                 else if (strcmp(*argv,"-ssl3") == 0)
 790                         meth=SSLv3_client_method();
 791 #endif
 792 #ifndef OPENSSL_NO_TLS1
 793                 else if (strcmp(*argv,"-tls1_1") == 0)
 794                         meth=TLSv1_1_client_method();
 795                 else if (strcmp(*argv,"-tls1") == 0)
 796                         meth=TLSv1_client_method();
 797 #endif
 798 #ifndef OPENSSL_NO_DTLS1
 799                 else if (strcmp(*argv,"-dtls1") == 0)
 800                         {
 801                         meth=DTLSv1_client_method();
 802                         socket_type=SOCK_DGRAM;
 803                         }
 804                 else if (strcmp(*argv,"-timeout") == 0)
 805                         enable_timeouts=1;
 806                 else if (strcmp(*argv,"-mtu") == 0)
 807                         {
 808                         if (--argc < 1) goto bad;
 809                         socket_mtu = atol(*(++argv));
 810                         }
 811 #endif
 812                 else if (strcmp(*argv,"-bugs") == 0)
 813                         bugs=1;
 814                 else if (strcmp(*argv,"-keyform") == 0)
 815                         {
 816                         if (--argc < 1) goto bad;
 817                         key_format = str2fmt(*(++argv));
 818                         }
 819                 else if (strcmp(*argv,"-pass") == 0)
 820                         {
 821                         if (--argc < 1) goto bad;
 822                         passarg = *(++argv);
 823                         }
 824                 else if (strcmp(*argv,"-key") == 0)
 825                         {
 826                         if (--argc < 1) goto bad;
 827                         key_file= *(++argv);
 828                         }
 829                 else if (strcmp(*argv,"-reconnect") == 0)
 830                         {
 831                         reconnect=5;
 832                         }
 833                 else if (strcmp(*argv,"-CApath") == 0)
 834                         {
 835                         if (--argc < 1) goto bad;
 836                         CApath= *(++argv);
 837                         }
 838                 else if (strcmp(*argv,"-CAfile") == 0)
 839                         {
 840                         if (--argc < 1) goto bad;
 841                         CAfile= *(++argv);
 842                         }
 843                 else if (strcmp(*argv,"-no_tls1_1") == 0)
 844                         off|=SSL_OP_NO_TLSv1_1;
 845                 else if (strcmp(*argv,"-no_tls1") == 0)
 846                         off|=SSL_OP_NO_TLSv1;
 847                 else if (strcmp(*argv,"-no_ssl3") == 0)
 848                         off|=SSL_OP_NO_SSLv3;
 849                 else if (strcmp(*argv,"-no_ssl2") == 0)
 850                         off|=SSL_OP_NO_SSLv2;
 851                 else if (strcmp(*argv,"-no_comp") == 0)
 852                         { off|=SSL_OP_NO_COMPRESSION; }
 853 #ifndef OPENSSL_NO_TLSEXT
 854                 else if (strcmp(*argv,"-no_ticket") == 0)
 855                         { off|=SSL_OP_NO_TICKET; }
 856 # ifndef OPENSSL_NO_NEXTPROTONEG
 857                 else if (strcmp(*argv,"-nextprotoneg") == 0)
 858                         {
 859                         if (--argc < 1) goto bad;
 860                         next_proto_neg_in = *(++argv);
 861                         }
 862 # endif
 863 #endif
 864                 else if (strcmp(*argv,"-serverpref") == 0)
 865                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 866                 else if (strcmp(*argv,"-legacy_renegotiation") == 0)
 867                         off|=SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
 868                 else if (strcmp(*argv,"-legacy_server_connect") == 0)
 869                         { off|=SSL_OP_LEGACY_SERVER_CONNECT; }
 870                 else if (strcmp(*argv,"-no_legacy_server_connect") == 0)
 871                         { clr|=SSL_OP_LEGACY_SERVER_CONNECT; }
 872                 else if (strcmp(*argv,"-cipher") == 0)
 873                         {
 874                         if (--argc < 1) goto bad;
 875                         cipher= *(++argv);
 876                         }
 877 #ifdef FIONBIO
 878                 else if (strcmp(*argv,"-nbio") == 0)
 879                         { c_nbio=1; }
 880 #endif
 881                 else if (strcmp(*argv,"-starttls") == 0)
 882                         {
 883                         if (--argc < 1) goto bad;
 884                         ++argv;
 885                         if (strcmp(*argv,"smtp") == 0)
 886                                 starttls_proto = PROTO_SMTP;
 887                         else if (strcmp(*argv,"pop3") == 0)
 888                                 starttls_proto = PROTO_POP3;
 889                         else if (strcmp(*argv,"imap") == 0)
 890                                 starttls_proto = PROTO_IMAP;
 891                         else if (strcmp(*argv,"ftp") == 0)
 892                                 starttls_proto = PROTO_FTP;
 893                         else if (strcmp(*argv, "xmpp") == 0)
 894                                 starttls_proto = PROTO_XMPP;
 895                         else
 896                                 goto bad;
 897                         }
 898 #ifndef OPENSSL_NO_ENGINE
 899                 else if (strcmp(*argv,"-engine") == 0)
 900                         {
 901                         if (--argc < 1) goto bad;
 902                         engine_id = *(++argv);
 903                         }
 904                 else if (strcmp(*argv,"-ssl_client_engine") == 0)
 905                         {
 906                         if (--argc < 1) goto bad;
 907                         ssl_client_engine_id = *(++argv);
 908                         }
 909 #endif
 910                 else if (strcmp(*argv,"-rand") == 0)
 911                         {
 912                         if (--argc < 1) goto bad;
 913                         inrand= *(++argv);
 914                         }
 915 #ifndef OPENSSL_NO_TLSEXT
 916                 else if (strcmp(*argv,"-servername") == 0)
 917                         {
 918                         if (--argc < 1) goto bad;
 919                         servername= *(++argv);
 920                         /* meth=TLSv1_client_method(); */
 921                         }
 922 #endif
 923 #ifndef OPENSSL_NO_JPAKE
 924                 else if (strcmp(*argv,"-jpake") == 0)
 925                         {
 926                         if (--argc < 1) goto bad;
 927                         jpake_secret = *++argv;
 928                         }
 929 #endif
 930                 else
 931                         {
 932                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 933                         badop=1;
 934                         break;
 935                         }
 936                 argc--;
 937                 argv++;
 938                 }
 939         if (badop)
 940                 {
 941 bad:
 942                 sc_usage();
 943                 goto end;
 944                 }
 945
 946 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
 947         if (jpake_secret)
 948                 {
 949                 if (psk_key)
 950                         {
 951                         BIO_printf(bio_err,
 952                                    "Can't use JPAKE and PSK together\n");
 953                         goto end;
 954                         }
 955                 psk_identity = "JPAKE";
 956                 }
 957
 958         if (cipher)
 959                 {
 960                 BIO_printf(bio_err, "JPAKE sets cipher to PSK\n");
 961                 goto end;
 962                 }
 963         cipher = "PSK";
 964 #endif
 965
 966         OpenSSL_add_ssl_algorithms();
 967         SSL_load_error_strings();
 968
 969 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
 970         next_proto.status = -1;
 971         if (next_proto_neg_in)
 972                 {
 973                 next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
 974                 if (next_proto.data == NULL)
 975                         {
 976                         BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
 977                         goto end;
 978                         }
 979                 }
 980         else
 981                 next_proto.data = NULL;
 982 #endif
 983
 984 #ifndef OPENSSL_NO_ENGINE
 985         e = setup_engine(bio_err, engine_id, 1);
 986         if (ssl_client_engine_id)
 987                 {
 988                 ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
 989                 if (!ssl_client_engine)
 990                         {
 991                         BIO_printf(bio_err,
 992                                         "Error getting client auth engine\n");
 993                         goto end;
 994                         }
 995                 }
 996
 997 #endif
 998         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
 999                 {
1000                 BIO_printf(bio_err, "Error getting password\n");
1001                 goto end;
1002                 }
1003
1004         if (key_file == NULL)
1005                 key_file = cert_file;
1006
1007
1008         if (key_file)
1009
1010                 {
1011
1012                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
1013                                "client certificate private key file");
1014                 if (!key)
1015                         {
1016                         ERR_print_errors(bio_err);
1017                         goto end;
1018                         }
1019
1020                 }
1021
1022         if (cert_file)
1023
1024                 {
1025                 cert = load_cert(bio_err,cert_file,cert_format,
1026                                 NULL, e, "client certificate file");
1027
1028                 if (!cert)
1029                         {
1030                         ERR_print_errors(bio_err);
1031                         goto end;
1032                         }
1033                 }
1034
1035         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1036                 && !RAND_status())
1037                 {
1038                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1039                 }
1040         if (inrand != NULL)
1041                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1042                         app_RAND_load_files(inrand));
1043
1044         if (bio_c_out == NULL)
1045                 {
1046                 if (c_quiet && !c_debug && !c_msg)
1047                         {
1048                         bio_c_out=BIO_new(BIO_s_null());
1049                         }
1050                 else
1051                         {
1052                         if (bio_c_out == NULL)
1053                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1054                         }
1055                 }
1056
1057 #ifndef OPENSSL_NO_SRP
1058         if(!app_passwd(bio_err, srppass, NULL, &srp_arg.srppassin, NULL))
1059                 {
1060                 BIO_printf(bio_err, "Error getting password\n");
1061                 goto end;
1062                 }
1063 #endif
1064
1065         ctx=SSL_CTX_new(meth);
1066         if (ctx == NULL)
1067                 {
1068                 ERR_print_errors(bio_err);
1069                 goto end;
1070                 }
1071
1072         if (vpm)
1073                 SSL_CTX_set1_param(ctx, vpm);
1074
1075 #ifndef OPENSSL_NO_ENGINE
1076         if (ssl_client_engine)
1077                 {
1078                 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
1079                         {
1080                         BIO_puts(bio_err, "Error setting client auth engine\n");
1081                         ERR_print_errors(bio_err);
1082                         ENGINE_free(ssl_client_engine);
1083                         goto end;
1084                         }
1085                 ENGINE_free(ssl_client_engine);
1086                 }
1087 #endif
1088
1089 #ifndef OPENSSL_NO_PSK
1090 #ifdef OPENSSL_NO_JPAKE
1091         if (psk_key != NULL)
1092 #else
1093         if (psk_key != NULL || jpake_secret)
1094 #endif
1095                 {
1096                 if (c_debug)
1097                         BIO_printf(bio_c_out, "PSK key given or JPAKE in use, setting client callback\n");
1098                 SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
1099                 }
1100 #endif
1101         if (bugs)
1102                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
1103         else
1104                 SSL_CTX_set_options(ctx,off);
1105
1106         if (clr)
1107                 SSL_CTX_clear_options(ctx, clr);
1108         /* DTLS: partial reads end up discarding unread UDP bytes :-(
1109          * Setting read ahead solves this problem.
1110          */
1111         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1112
1113 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1114         if (next_proto.data)
1115                 SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
1116 #endif
1117
1118         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1119         if (cipher != NULL)
1120                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
1121                 BIO_printf(bio_err,"error setting cipher list\n");
1122                 ERR_print_errors(bio_err);
1123                 goto end;
1124         }
1125 #if 0
1126         else
1127                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
1128 #endif
1129
1130         SSL_CTX_set_verify(ctx,verify,verify_callback);
1131         if (!set_cert_key_stuff(ctx,cert,key))
1132                 goto end;
1133
1134         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1135                 (!SSL_CTX_set_default_verify_paths(ctx)))
1136                 {
1137                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
1138                 ERR_print_errors(bio_err);
1139                 /* goto end; */
1140                 }
1141
1142 #ifndef OPENSSL_NO_TLSEXT
1143         if (servername != NULL)
1144                 {
1145                 tlsextcbp.biodebug = bio_err;
1146                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1147                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1148                 }
1149 #ifndef OPENSSL_NO_SRP
1150         if (srp_arg.srplogin)
1151                 {
1152                 if (srp_lateuser)
1153                         SSL_CTX_set_srp_missing_srp_username_callback(ctx,missing_srp_username_callback);
1154                 else if (!SSL_CTX_set_srp_username(ctx, srp_arg.srplogin))
1155                         {
1156                         BIO_printf(bio_err,"Unable to set SRP username\n");
1157                         goto end;
1158                         }
1159                 srp_arg.msg = c_msg;
1160                 srp_arg.debug = c_debug ;
1161                 SSL_CTX_set_srp_cb_arg(ctx,&srp_arg);
1162                 SSL_CTX_set_srp_client_pwd_callback(ctx, ssl_give_srp_client_pwd_cb);
1163                 SSL_CTX_set_srp_strength(ctx, srp_arg.strength);
1164                 if (c_msg || c_debug || srp_arg.amp == 0)
1165                         SSL_CTX_set_srp_verify_param_callback(ctx, ssl_srp_verify_param_cb);
1166                 }
1167
1168 #endif
1169 #endif
1170
1171         con=SSL_new(ctx);
1172         if (sess_in)
1173                 {
1174                 SSL_SESSION *sess;
1175                 BIO *stmp = BIO_new_file(sess_in, "r");
1176                 if (!stmp)
1177                         {
1178                         BIO_printf(bio_err, "Can't open session file %s\n",
1179                                                 sess_in);
1180                         ERR_print_errors(bio_err);
1181                         goto end;
1182                         }
1183                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
1184                 BIO_free(stmp);
1185                 if (!sess)
1186                         {
1187                         BIO_printf(bio_err, "Can't open session file %s\n",
1188                                                 sess_in);
1189                         ERR_print_errors(bio_err);
1190                         goto end;
1191                         }
1192                 SSL_set_session(con, sess);
1193                 SSL_SESSION_free(sess);
1194                 }
1195 #ifndef OPENSSL_NO_TLSEXT
1196         if (servername != NULL)
1197                 {
1198                 if (!SSL_set_tlsext_host_name(con,servername))
1199                         {
1200                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
1201                         ERR_print_errors(bio_err);
1202                         goto end;
1203                         }
1204                 }
1205 #endif
1206 #ifndef OPENSSL_NO_KRB5
1207         if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
1208                 {
1209                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
1210                 }
1211 #endif  /* OPENSSL_NO_KRB5  */
1212 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
1213 #if 0
1214 #ifdef TLSEXT_TYPE_opaque_prf_input
1215         SSL_set_tlsext_opaque_prf_input(con, "Test client", 11);
1216 #endif
1217 #endif
1218
1219 re_start:
1220
1221         if (init_client(&s,host,port,socket_type) == 0)
1222                 {
1223                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
1224                 SHUTDOWN(s);
1225                 goto end;
1226                 }
1227         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
1228
1229 #ifdef FIONBIO
1230         if (c_nbio)
1231                 {
1232                 unsigned long l=1;
1233                 BIO_printf(bio_c_out,"turning on non blocking io\n");
1234                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
1235                         {
1236                         ERR_print_errors(bio_err);
1237                         goto end;
1238                         }
1239                 }
1240 #endif
1241         if (c_Pause & 0x01) con->debug=1;
1242
1243         if ( SSL_version(con) == DTLS1_VERSION)
1244                 {
1245
1246                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1247                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
1248                         {
1249                         BIO_printf(bio_err, "getsockname:errno=%d\n",
1250                                 get_last_socket_error());
1251                         SHUTDOWN(s);
1252                         goto end;
1253                         }
1254
1255                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
1256
1257                 if (enable_timeouts)
1258                         {
1259                         timeout.tv_sec = 0;
1260                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1261                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1262
1263                         timeout.tv_sec = 0;
1264                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1265                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1266                         }
1267
1268                 if (socket_mtu > 28)
1269                         {
1270                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1271                         SSL_set_mtu(con, socket_mtu - 28);
1272                         }
1273                 else
1274                         /* want to do MTU discovery */
1275                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1276                 }
1277         else
1278                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1279
1280         if (nbio_test)
1281                 {
1282                 BIO *test;
1283
1284                 test=BIO_new(BIO_f_nbio_test());
1285                 sbio=BIO_push(test,sbio);
1286                 }
1287
1288         if (c_debug)
1289                 {
1290                 con->debug=1;
1291                 BIO_set_callback(sbio,bio_dump_callback);
1292                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
1293                 }
1294         if (c_msg)
1295                 {
1296                 SSL_set_msg_callback(con, msg_cb);
1297                 SSL_set_msg_callback_arg(con, bio_c_out);
1298                 }
1299 #ifndef OPENSSL_NO_TLSEXT
1300         if (c_tlsextdebug)
1301                 {
1302                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
1303                 SSL_set_tlsext_debug_arg(con, bio_c_out);
1304                 }
1305         if (c_status_req)
1306                 {
1307                 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
1308                 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
1309                 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
1310 #if 0
1311 {
1312 STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
1313 OCSP_RESPID *id = OCSP_RESPID_new();
1314 id->value.byKey = ASN1_OCTET_STRING_new();
1315 id->type = V_OCSP_RESPID_KEY;
1316 ASN1_STRING_set(id->value.byKey, "Hello World", -1);
1317 sk_OCSP_RESPID_push(ids, id);
1318 SSL_set_tlsext_status_ids(con, ids);
1319 }
1320 #endif
1321                 }
1322 #endif
1323 #ifndef OPENSSL_NO_JPAKE
1324         if (jpake_secret)
1325                 jpake_client_auth(bio_c_out, sbio, jpake_secret);
1326 #endif
1327
1328         SSL_set_bio(con,sbio,sbio);
1329         SSL_set_connect_state(con);
1330
1331         /* ok, lets connect */
1332         width=SSL_get_fd(con)+1;
1333
1334         read_tty=1;
1335         write_tty=0;
1336         tty_on=0;
1337         read_ssl=1;
1338         write_ssl=1;
1339
1340         cbuf_len=0;
1341         cbuf_off=0;
1342         sbuf_len=0;
1343         sbuf_off=0;
1344
1345         /* This is an ugly hack that does a lot of assumptions */
1346         /* We do have to handle multi-line responses which may come
1347            in a single packet or not. We therefore have to use
1348            BIO_gets() which does need a buffering BIO. So during
1349            the initial chitchat we do push a buffering BIO into the
1350            chain that is removed again later on to not disturb the
1351            rest of the s_client operation. */
1352         if (starttls_proto == PROTO_SMTP)
1353                 {
1354                 int foundit=0;
1355                 BIO *fbio = BIO_new(BIO_f_buffer());
1356                 BIO_push(fbio, sbio);
1357                 /* wait for multi-line response to end from SMTP */
1358                 do
1359                         {
1360                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1361                         }
1362                 while (mbuf_len>3 && mbuf[3]=='-');
1363                 /* STARTTLS command requires EHLO... */
1364                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
1365                 (void)BIO_flush(fbio);
1366                 /* wait for multi-line response to end EHLO SMTP response */
1367                 do
1368                         {
1369                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1370                         if (strstr(mbuf,"STARTTLS"))
1371                                 foundit=1;
1372                         }
1373                 while (mbuf_len>3 && mbuf[3]=='-');
1374                 (void)BIO_flush(fbio);
1375                 BIO_pop(fbio);
1376                 BIO_free(fbio);
1377                 if (!foundit)
1378                         BIO_printf(bio_err,
1379                                    "didn't found starttls in server response,"
1380                                    " try anyway...\n");
1381                 BIO_printf(sbio,"STARTTLS\r\n");
1382                 BIO_read(sbio,sbuf,BUFSIZZ);
1383                 }
1384         else if (starttls_proto == PROTO_POP3)
1385                 {
1386                 BIO_read(sbio,mbuf,BUFSIZZ);
1387                 BIO_printf(sbio,"STLS\r\n");
1388                 BIO_read(sbio,sbuf,BUFSIZZ);
1389                 }
1390         else if (starttls_proto == PROTO_IMAP)
1391                 {
1392                 int foundit=0;
1393                 BIO *fbio = BIO_new(BIO_f_buffer());
1394                 BIO_push(fbio, sbio);
1395                 BIO_gets(fbio,mbuf,BUFSIZZ);
1396                 /* STARTTLS command requires CAPABILITY... */
1397                 BIO_printf(fbio,". CAPABILITY\r\n");
1398                 (void)BIO_flush(fbio);
1399                 /* wait for multi-line CAPABILITY response */
1400                 do
1401                         {
1402                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1403                         if (strstr(mbuf,"STARTTLS"))
1404                                 foundit=1;
1405                         }
1406                 while (mbuf_len>3 && mbuf[0]!='.');
1407                 (void)BIO_flush(fbio);
1408                 BIO_pop(fbio);
1409                 BIO_free(fbio);
1410                 if (!foundit)
1411                         BIO_printf(bio_err,
1412                                    "didn't found STARTTLS in server response,"
1413                                    " try anyway...\n");
1414                 BIO_printf(sbio,". STARTTLS\r\n");
1415                 BIO_read(sbio,sbuf,BUFSIZZ);
1416                 }
1417         else if (starttls_proto == PROTO_FTP)
1418                 {
1419                 BIO *fbio = BIO_new(BIO_f_buffer());
1420                 BIO_push(fbio, sbio);
1421                 /* wait for multi-line response to end from FTP */
1422                 do
1423                         {
1424                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1425                         }
1426                 while (mbuf_len>3 && mbuf[3]=='-');
1427                 (void)BIO_flush(fbio);
1428                 BIO_pop(fbio);
1429                 BIO_free(fbio);
1430                 BIO_printf(sbio,"AUTH TLS\r\n");
1431                 BIO_read(sbio,sbuf,BUFSIZZ);
1432                 }
1433         if (starttls_proto == PROTO_XMPP)
1434                 {
1435                 int seen = 0;
1436                 BIO_printf(sbio,"<stream:stream "
1437                     "xmlns:stream='http://etherx.jabber.org/streams' "
1438                     "xmlns='jabber:client' to='%s' version='1.0'>", host);
1439                 seen = BIO_read(sbio,mbuf,BUFSIZZ);
1440                 mbuf[seen] = 0;
1441                 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
1442                         {
1443                         if (strstr(mbuf, "/stream:features>"))
1444                                 goto shut;
1445                         seen = BIO_read(sbio,mbuf,BUFSIZZ);
1446                         mbuf[seen] = 0;
1447                         }
1448                 BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1449                 seen = BIO_read(sbio,sbuf,BUFSIZZ);
1450                 sbuf[seen] = 0;
1451                 if (!strstr(sbuf, "<proceed"))
1452                         goto shut;
1453                 mbuf[0] = 0;
1454                 }
1455
1456         for (;;)
1457                 {
1458                 FD_ZERO(&readfds);
1459                 FD_ZERO(&writefds);
1460
1461                 if ((SSL_version(con) == DTLS1_VERSION) &&
1462                         DTLSv1_get_timeout(con, &timeout))
1463                         timeoutp = &timeout;
1464                 else
1465                         timeoutp = NULL;
1466
1467                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1468                         {
1469                         in_init=1;
1470                         tty_on=0;
1471                         }
1472                 else
1473                         {
1474                         tty_on=1;
1475                         if (in_init)
1476                                 {
1477                                 in_init=0;
1478 #if 0 /* This test doesn't really work as intended (needs to be fixed) */
1479 #ifndef OPENSSL_NO_TLSEXT
1480                                 if (servername != NULL && !SSL_session_reused(con))
1481                                         {
1482                                         BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
1483                                         }
1484 #endif
1485 #endif
1486                                 if (sess_out)
1487                                         {
1488                                         BIO *stmp = BIO_new_file(sess_out, "w");
1489                                         if (stmp)
1490                                                 {
1491                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1492                                                 BIO_free(stmp);
1493                                                 }
1494                                         else
1495                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1496                                         }
1497                                 print_stuff(bio_c_out,con,full_log);
1498                                 if (full_log > 0) full_log--;
1499
1500                                 if (starttls_proto)
1501                                         {
1502                                         BIO_printf(bio_err,"%s",mbuf);
1503                                         /* We don't need to know any more */
1504                                         starttls_proto = PROTO_OFF;
1505                                         }
1506
1507                                 if (reconnect)
1508                                         {
1509                                         reconnect--;
1510                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1511                                         SSL_shutdown(con);
1512                                         SSL_set_connect_state(con);
1513                                         SHUTDOWN(SSL_get_fd(con));
1514                                         goto re_start;
1515                                         }
1516                                 }
1517                         }
1518
1519                 ssl_pending = read_ssl && SSL_pending(con);
1520
1521                 if (!ssl_pending)
1522                         {
1523 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
1524                         if (tty_on)
1525                                 {
1526                                 if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
1527                                 if (write_tty) openssl_fdset(fileno(stdout),&writefds);
1528                                 }
1529                         if (read_ssl)
1530                                 openssl_fdset(SSL_get_fd(con),&readfds);
1531                         if (write_ssl)
1532                                 openssl_fdset(SSL_get_fd(con),&writefds);
1533 #else
1534                         if(!tty_on || !write_tty) {
1535                                 if (read_ssl)
1536                                         openssl_fdset(SSL_get_fd(con),&readfds);
1537                                 if (write_ssl)
1538                                         openssl_fdset(SSL_get_fd(con),&writefds);
1539                         }
1540 #endif
1541 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1542                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1543
1544                         /* Note: under VMS with SOCKETSHR the second parameter
1545                          * is currently of type (int *) whereas under other
1546                          * systems it is (void *) if you don't have a cast it
1547                          * will choke the compiler: if you do have a cast then
1548                          * you can either go for (int *) or (void *).
1549                          */
1550 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1551                         /* Under Windows/DOS we make the assumption that we can
1552                          * always write to the tty: therefore if we need to
1553                          * write to the tty we just fall through. Otherwise
1554                          * we timeout the select every second and see if there
1555                          * are any keypresses. Note: this is a hack, in a proper
1556                          * Windows application we wouldn't do this.
1557                          */
1558                         i=0;
1559                         if(!write_tty) {
1560                                 if(read_tty) {
1561                                         tv.tv_sec = 1;
1562                                         tv.tv_usec = 0;
1563                                         i=select(width,(void *)&readfds,(void *)&writefds,
1564                                                  NULL,&tv);
1565 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1566                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1567 #else
1568                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1569 #endif
1570                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1571                                          NULL,timeoutp);
1572                         }
1573 #elif defined(OPENSSL_SYS_NETWARE)
1574                         if(!write_tty) {
1575                                 if(read_tty) {
1576                                         tv.tv_sec = 1;
1577                                         tv.tv_usec = 0;
1578                                         i=select(width,(void *)&readfds,(void *)&writefds,
1579                                                 NULL,&tv);
1580                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1581                                         NULL,timeoutp);
1582                         }
1583 #elif defined(OPENSSL_SYS_BEOS_R5)
1584                         /* Under BeOS-R5 the situation is similar to DOS */
1585                         i=0;
1586                         stdin_set = 0;
1587                         (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
1588                         if(!write_tty) {
1589                                 if(read_tty) {
1590                                         tv.tv_sec = 1;
1591                                         tv.tv_usec = 0;
1592                                         i=select(width,(void *)&readfds,(void *)&writefds,
1593                                                  NULL,&tv);
1594                                         if (read(fileno(stdin), sbuf, 0) >= 0)
1595                                                 stdin_set = 1;
1596                                         if (!i && (stdin_set != 1 || !read_tty))
1597                                                 continue;
1598                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1599                                          NULL,timeoutp);
1600                         }
1601                         (void)fcntl(fileno(stdin), F_SETFL, 0);
1602 #else
1603                         i=select(width,(void *)&readfds,(void *)&writefds,
1604                                  NULL,timeoutp);
1605 #endif
1606                         if ( i < 0)
1607                                 {
1608                                 BIO_printf(bio_err,"bad select %d\n",
1609                                 get_last_socket_error());
1610                                 goto shut;
1611                                 /* goto end; */
1612                                 }
1613                         }
1614
1615                 if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
1616                         {
1617                         BIO_printf(bio_err,"TIMEOUT occured\n");
1618                         }
1619
1620                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1621                         {
1622                         k=SSL_write(con,&(cbuf[cbuf_off]),
1623                                 (unsigned int)cbuf_len);
1624                         switch (SSL_get_error(con,k))
1625                                 {
1626                         case SSL_ERROR_NONE:
1627                                 cbuf_off+=k;
1628                                 cbuf_len-=k;
1629                                 if (k <= 0) goto end;
1630                                 /* we have done a  write(con,NULL,0); */
1631                                 if (cbuf_len <= 0)
1632                                         {
1633                                         read_tty=1;
1634                                         write_ssl=0;
1635                                         }
1636                                 else /* if (cbuf_len > 0) */
1637                                         {
1638                                         read_tty=0;
1639                                         write_ssl=1;
1640                                         }
1641                                 break;
1642                         case SSL_ERROR_WANT_WRITE:
1643                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1644                                 write_ssl=1;
1645                                 read_tty=0;
1646                                 break;
1647                         case SSL_ERROR_WANT_READ:
1648                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1649                                 write_tty=0;
1650                                 read_ssl=1;
1651                                 write_ssl=0;
1652                                 break;
1653                         case SSL_ERROR_WANT_X509_LOOKUP:
1654                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1655                                 break;
1656                         case SSL_ERROR_ZERO_RETURN:
1657                                 if (cbuf_len != 0)
1658                                         {
1659                                         BIO_printf(bio_c_out,"shutdown\n");
1660                                         ret = 0;
1661                                         goto shut;
1662                                         }
1663                                 else
1664                                         {
1665                                         read_tty=1;
1666                                         write_ssl=0;
1667                                         break;
1668                                         }
1669
1670                         case SSL_ERROR_SYSCALL:
1671                                 if ((k != 0) || (cbuf_len != 0))
1672                                         {
1673                                         BIO_printf(bio_err,"write:errno=%d\n",
1674                                                 get_last_socket_error());
1675                                         goto shut;
1676                                         }
1677                                 else
1678                                         {
1679                                         read_tty=1;
1680                                         write_ssl=0;
1681                                         }
1682                                 break;
1683                         case SSL_ERROR_SSL:
1684                                 ERR_print_errors(bio_err);
1685                                 goto shut;
1686                                 }
1687                         }
1688 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
1689                 /* Assume Windows/DOS/BeOS can always write */
1690                 else if (!ssl_pending && write_tty)
1691 #else
1692                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1693 #endif
1694                         {
1695 #ifdef CHARSET_EBCDIC
1696                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1697 #endif
1698                         i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
1699
1700                         if (i <= 0)
1701                                 {
1702                                 BIO_printf(bio_c_out,"DONE\n");
1703                                 ret = 0;
1704                                 goto shut;
1705                                 /* goto end; */
1706                                 }
1707
1708                         sbuf_len-=i;;
1709                         sbuf_off+=i;
1710                         if (sbuf_len <= 0)
1711                                 {
1712                                 read_ssl=1;
1713                                 write_tty=0;
1714                                 }
1715                         }
1716                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1717                         {
1718 #ifdef RENEG
1719 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1720 #endif
1721 #if 1
1722                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1723 #else
1724 /* Demo for pending and peek :-) */
1725                         k=SSL_read(con,sbuf,16);
1726 { char zbuf[10240];
1727 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1728 }
1729 #endif
1730
1731                         switch (SSL_get_error(con,k))
1732                                 {
1733                         case SSL_ERROR_NONE:
1734                                 if (k <= 0)
1735                                         goto end;
1736                                 sbuf_off=0;
1737                                 sbuf_len=k;
1738
1739                                 read_ssl=0;
1740                                 write_tty=1;
1741                                 break;
1742                         case SSL_ERROR_WANT_WRITE:
1743                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1744                                 write_ssl=1;
1745                                 read_tty=0;
1746                                 break;
1747                         case SSL_ERROR_WANT_READ:
1748                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1749                                 write_tty=0;
1750                                 read_ssl=1;
1751                                 if ((read_tty == 0) && (write_ssl == 0))
1752                                         write_ssl=1;
1753                                 break;
1754                         case SSL_ERROR_WANT_X509_LOOKUP:
1755                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1756                                 break;
1757                         case SSL_ERROR_SYSCALL:
1758                                 ret=get_last_socket_error();
1759                                 BIO_printf(bio_err,"read:errno=%d\n",ret);
1760                                 goto shut;
1761                         case SSL_ERROR_ZERO_RETURN:
1762                                 BIO_printf(bio_c_out,"closed\n");
1763                                 ret=0;
1764                                 goto shut;
1765                         case SSL_ERROR_SSL:
1766                                 ERR_print_errors(bio_err);
1767                                 goto shut;
1768                                 /* break; */
1769                                 }
1770                         }
1771
1772 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1773 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1774                 else if (_kbhit())
1775 #else
1776                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1777 #endif
1778 #elif defined (OPENSSL_SYS_NETWARE)
1779                 else if (_kbhit())
1780 #elif defined(OPENSSL_SYS_BEOS_R5)
1781                 else if (stdin_set)
1782 #else
1783                 else if (FD_ISSET(fileno(stdin),&readfds))
1784 #endif
1785                         {
1786                         if (crlf)
1787                                 {
1788                                 int j, lf_num;
1789
1790                                 i=raw_read_stdin(cbuf,BUFSIZZ/2);
1791                                 lf_num = 0;
1792                                 /* both loops are skipped when i <= 0 */
1793                                 for (j = 0; j < i; j++)
1794                                         if (cbuf[j] == '\n')
1795                                                 lf_num++;
1796                                 for (j = i-1; j >= 0; j--)
1797                                         {
1798                                         cbuf[j+lf_num] = cbuf[j];
1799                                         if (cbuf[j] == '\n')
1800                                                 {
1801                                                 lf_num--;
1802                                                 i++;
1803                                                 cbuf[j+lf_num] = '\r';
1804                                                 }
1805                                         }
1806                                 assert(lf_num == 0);
1807                                 }
1808                         else
1809                                 i=raw_read_stdin(cbuf,BUFSIZZ);
1810
1811                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1812                                 {
1813                                 BIO_printf(bio_err,"DONE\n");
1814                                 ret=0;
1815                                 goto shut;
1816                                 }
1817
1818                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1819                                 {
1820                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1821                                 SSL_renegotiate(con);
1822                                 cbuf_len=0;
1823                                 }
1824                         else
1825                                 {
1826                                 cbuf_len=i;
1827                                 cbuf_off=0;
1828 #ifdef CHARSET_EBCDIC
1829                                 ebcdic2ascii(cbuf, cbuf, i);
1830 #endif
1831                                 }
1832
1833                         write_ssl=1;
1834                         read_tty=0;
1835                         }
1836                 }
1837
1838         ret=0;
1839 shut:
1840         if (in_init)
1841                 print_stuff(bio_c_out,con,full_log);
1842         SSL_shutdown(con);
1843         SHUTDOWN(SSL_get_fd(con));
1844 end:
1845         if (con != NULL)
1846                 {
1847                 if (prexit != 0)
1848                         print_stuff(bio_c_out,con,1);
1849                 SSL_free(con);
1850                 }
1851         if (ctx != NULL) SSL_CTX_free(ctx);
1852         if (cert)
1853                 X509_free(cert);
1854         if (key)
1855                 EVP_PKEY_free(key);
1856         if (pass)
1857                 OPENSSL_free(pass);
1858         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1859         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1860         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1861         if (bio_c_out != NULL)
1862                 {
1863                 BIO_free(bio_c_out);
1864                 bio_c_out=NULL;
1865                 }
1866         apps_shutdown();
1867         OPENSSL_EXIT(ret);
1868         }
1869
1870
1871 static void print_stuff(BIO *bio, SSL *s, int full)
1872         {
1873         X509 *peer=NULL;
1874         char *p;
1875         static const char *space="                ";
1876         char buf[BUFSIZ];
1877         STACK_OF(X509) *sk;
1878         STACK_OF(X509_NAME) *sk2;
1879         const SSL_CIPHER *c;
1880         X509_NAME *xn;
1881         int j,i;
1882 #ifndef OPENSSL_NO_COMP
1883         const COMP_METHOD *comp, *expansion;
1884 #endif
1885
1886         if (full)
1887                 {
1888                 int got_a_chain = 0;
1889
1890                 sk=SSL_get_peer_cert_chain(s);
1891                 if (sk != NULL)
1892                         {
1893                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1894
1895                         BIO_printf(bio,"---\nCertificate chain\n");
1896                         for (i=0; i<sk_X509_num(sk); i++)
1897                                 {
1898                                 X509_NAME_oneline(X509_get_subject_name(
1899                                         sk_X509_value(sk,i)),buf,sizeof buf);
1900                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1901                                 X509_NAME_oneline(X509_get_issuer_name(
1902                                         sk_X509_value(sk,i)),buf,sizeof buf);
1903                                 BIO_printf(bio,"   i:%s\n",buf);
1904                                 if (c_showcerts)
1905                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1906                                 }
1907                         }
1908
1909                 BIO_printf(bio,"---\n");
1910                 peer=SSL_get_peer_certificate(s);
1911                 if (peer != NULL)
1912                         {
1913                         BIO_printf(bio,"Server certificate\n");
1914                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1915                                 PEM_write_bio_X509(bio,peer);
1916                         X509_NAME_oneline(X509_get_subject_name(peer),
1917                                 buf,sizeof buf);
1918                         BIO_printf(bio,"subject=%s\n",buf);
1919                         X509_NAME_oneline(X509_get_issuer_name(peer),
1920                                 buf,sizeof buf);
1921                         BIO_printf(bio,"issuer=%s\n",buf);
1922                         }
1923                 else
1924                         BIO_printf(bio,"no peer certificate available\n");
1925
1926                 sk2=SSL_get_client_CA_list(s);
1927                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
1928                         {
1929                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
1930                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
1931                                 {
1932                                 xn=sk_X509_NAME_value(sk2,i);
1933                                 X509_NAME_oneline(xn,buf,sizeof(buf));
1934                                 BIO_write(bio,buf,strlen(buf));
1935                                 BIO_write(bio,"\n",1);
1936                                 }
1937                         }
1938                 else
1939                         {
1940                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
1941                         }
1942                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
1943                 if (p != NULL)
1944                         {
1945                         /* This works only for SSL 2.  In later protocol
1946                          * versions, the client does not know what other
1947                          * ciphers (in addition to the one to be used
1948                          * in the current connection) the server supports. */
1949
1950                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
1951                         j=i=0;
1952                         while (*p)
1953                                 {
1954                                 if (*p == ':')
1955                                         {
1956                                         BIO_write(bio,space,15-j%25);
1957                                         i++;
1958                                         j=0;
1959                                         BIO_write(bio,((i%3)?" ":"\n"),1);
1960                                         }
1961                                 else
1962                                         {
1963                                         BIO_write(bio,p,1);
1964                                         j++;
1965                                         }
1966                                 p++;
1967                                 }
1968                         BIO_write(bio,"\n",1);
1969                         }
1970
1971                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
1972                         BIO_number_read(SSL_get_rbio(s)),
1973                         BIO_number_written(SSL_get_wbio(s)));
1974                 }
1975         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
1976         c=SSL_get_current_cipher(s);
1977         BIO_printf(bio,"%s, Cipher is %s\n",
1978                 SSL_CIPHER_get_version(c),
1979                 SSL_CIPHER_get_name(c));
1980         if (peer != NULL) {
1981                 EVP_PKEY *pktmp;
1982                 pktmp = X509_get_pubkey(peer);
1983                 BIO_printf(bio,"Server public key is %d bit\n",
1984                                                          EVP_PKEY_bits(pktmp));
1985                 EVP_PKEY_free(pktmp);
1986         }
1987         BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
1988                         SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
1989 #ifndef OPENSSL_NO_COMP
1990         comp=SSL_get_current_compression(s);
1991         expansion=SSL_get_current_expansion(s);
1992         BIO_printf(bio,"Compression: %s\n",
1993                 comp ? SSL_COMP_get_name(comp) : "NONE");
1994         BIO_printf(bio,"Expansion: %s\n",
1995                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
1996 #endif
1997
1998 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1999         if (next_proto.status != -1) {
2000                 const unsigned char *proto;
2001                 unsigned int proto_len;
2002                 SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
2003                 BIO_printf(bio, "Next protocol: (%d) ", next_proto.status);
2004                 BIO_write(bio, proto, proto_len);
2005                 BIO_write(bio, "\n", 1);
2006         }
2007 #endif
2008
2009         SSL_SESSION_print(bio,SSL_get_session(s));
2010         BIO_printf(bio,"---\n");
2011         if (peer != NULL)
2012                 X509_free(peer);
2013         /* flush, or debugging output gets mixed with http response */
2014         (void)BIO_flush(bio);
2015         }
2016
2017 #ifndef OPENSSL_NO_TLSEXT
2018
2019 static int ocsp_resp_cb(SSL *s, void *arg)
2020         {
2021         const unsigned char *p;
2022         int len;
2023         OCSP_RESPONSE *rsp;
2024         len = SSL_get_tlsext_status_ocsp_resp(s, &p);
2025         BIO_puts(arg, "OCSP response: ");
2026         if (!p)
2027                 {
2028                 BIO_puts(arg, "no response sent\n");
2029                 return 1;
2030                 }
2031         rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
2032         if (!rsp)
2033                 {
2034                 BIO_puts(arg, "response parse error\n");
2035                 BIO_dump_indent(arg, (char *)p, len, 4);
2036                 return 0;
2037                 }
2038         BIO_puts(arg, "\n======================================\n");
2039         OCSP_RESPONSE_print(arg, rsp, 0);
2040         BIO_puts(arg, "======================================\n");
2041         OCSP_RESPONSE_free(rsp);
2042         return 1;
2043         }
2044
2045 #endif