apps/s_server.c

   1 /* apps/s_server.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 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 113  * ECC cipher suite support in OpenSSL originally developed by
 114  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 115  */
 116 /* ====================================================================
 117  * Copyright 2005 Nokia. All rights reserved.
 118  *
 119  * The portions of the attached software ("Contribution") is developed by
 120  * Nokia Corporation and is licensed pursuant to the OpenSSL open source
 121  * license.
 122  *
 123  * The Contribution, originally written by Mika Kousa and Pasi Eronen of
 124  * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
 125  * support (see RFC 4279) to OpenSSL.
 126  *
 127  * No patent licenses or other rights except those expressly stated in
 128  * the OpenSSL open source license shall be deemed granted or received
 129  * expressly, by implication, estoppel, or otherwise.
 130  *
 131  * No assurances are provided by Nokia that the Contribution does not
 132  * infringe the patent or other intellectual property rights of any third
 133  * party or that the license provides you with all the necessary rights
 134  * to make use of the Contribution.
 135  *
 136  * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
 137  * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
 138  * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
 139  * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
 140  * OTHERWISE.
 141  */
 142
 143
 144 #include <assert.h>
 145 #include <ctype.h>
 146 #include <stdio.h>
 147 #include <stdlib.h>
 148 #include <string.h>
 149
 150 #include <openssl/e_os2.h>
 151
 152 #if !defined(OPENSSL_SYS_NETWARE)  /* conflicts with winsock2 stuff on netware */
 153 #include <sys/types.h>
 154 #endif
 155
 156 /* With IPv6, it looks like Digital has mixed up the proper order of
 157    recursive header file inclusion, resulting in the compiler complaining
 158    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
 159    is needed to have fileno() declared correctly...  So let's define u_int */
 160 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
 161 #define __U_INT
 162 typedef unsigned int u_int;
 163 #endif
 164
 165 #include <openssl/lhash.h>
 166 #include <openssl/bn.h>
 167 #define USE_SOCKETS
 168 #include "apps.h"
 169 #include <openssl/err.h>
 170 #include <openssl/pem.h>
 171 #include <openssl/x509.h>
 172 #include <openssl/ssl.h>
 173 #include <openssl/rand.h>
 174 #include <openssl/ocsp.h>
 175 #ifndef OPENSSL_NO_DH
 176 #include <openssl/dh.h>
 177 #endif
 178 #ifndef OPENSSL_NO_RSA
 179 #include <openssl/rsa.h>
 180 #endif
 181 #ifndef OPENSSL_NO_SRP
 182 #include <openssl/srp.h>
 183 #endif
 184 #include "s_apps.h"
 185 #include "timeouts.h"
 186
 187 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
 188 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
 189 #undef FIONBIO
 190 #endif
 191
 192 #ifndef OPENSSL_NO_RSA
 193 static RSA *tmp_rsa_cb(SSL *s, int is_export, int keylength);
 194 #endif
 195 static int not_resumable_sess_cb(SSL *s, int is_forward_secure);
 196 static int sv_body(char *hostname, int s, int stype, unsigned char *context);
 197 static int www_body(char *hostname, int s, int stype, unsigned char *context);
 198 static int rev_body(char *hostname, int s, int stype, unsigned char *context);
 199 static void close_accept_socket(void );
 200 static void sv_usage(void);
 201 static int init_ssl_connection(SSL *s);
 202 static void print_stats(BIO *bp,SSL_CTX *ctx);
 203 static int generate_session_id(const SSL *ssl, unsigned char *id,
 204                                 unsigned int *id_len);
 205 static void init_session_cache_ctx(SSL_CTX *sctx);
 206 static void free_sessions(void);
 207 #ifndef OPENSSL_NO_DH
 208 static DH *load_dh_param(const char *dhfile);
 209 #endif
 210
 211 #ifdef MONOLITH
 212 static void s_server_init(void);
 213 #endif
 214
 215 /* static int load_CA(SSL_CTX *ctx, char *file);*/
 216
 217 #undef BUFSIZZ
 218 #define BUFSIZZ 16*1024
 219 static int bufsize=BUFSIZZ;
 220 static int accept_socket= -1;
 221
 222 #define TEST_CERT       "server.pem"
 223 #ifndef OPENSSL_NO_TLSEXT
 224 #define TEST_CERT2      "server2.pem"
 225 #endif
 226 #undef PROG
 227 #define PROG            s_server_main
 228
 229 extern int verify_depth, verify_return_error, verify_quiet;
 230
 231 static int s_server_verify=SSL_VERIFY_NONE;
 232 static int s_server_session_id_context = 1; /* anything will do */
 233 static const char *s_cert_file=TEST_CERT,*s_key_file=NULL, *s_chain_file=NULL;
 234 #ifndef OPENSSL_NO_TLSEXT
 235 static const char *s_cert_file2=TEST_CERT2,*s_key_file2=NULL;
 236 #endif
 237 static char *s_dcert_file=NULL,*s_dkey_file=NULL, *s_dchain_file=NULL;
 238 #ifdef FIONBIO
 239 static int s_nbio=0;
 240 #endif
 241 static int s_nbio_test=0;
 242 int s_crlf=0;
 243 static SSL_CTX *ctx=NULL;
 244 #ifndef OPENSSL_NO_TLSEXT
 245 static SSL_CTX *ctx2=NULL;
 246 #endif
 247 static int www=0;
 248
 249 static BIO *bio_s_out=NULL;
 250 static BIO *bio_s_msg = NULL;
 251 static int s_debug=0;
 252 #ifndef OPENSSL_NO_TLSEXT
 253 static int s_tlsextdebug=0;
 254 static int s_tlsextstatus=0;
 255 static int cert_status_cb(SSL *s, void *arg);
 256 #endif
 257 static int no_resume_ephemeral = 0;
 258 static int s_msg=0;
 259 static int s_quiet=0;
 260 static int s_ign_eof=0;
 261 static int s_brief=0;
 262
 263 static char *keymatexportlabel=NULL;
 264 static int keymatexportlen=20;
 265
 266 static int hack=0;
 267 #ifndef OPENSSL_NO_ENGINE
 268 static char *engine_id=NULL;
 269 #endif
 270 static const char *session_id_prefix=NULL;
 271
 272 static int enable_timeouts = 0;
 273 static long socket_mtu;
 274 #ifndef OPENSSL_NO_DTLS1
 275 static int cert_chain = 0;
 276 #endif
 277
 278 #ifndef OPENSSL_NO_TLSEXT
 279 static BIO *serverinfo_in = NULL;
 280 static const char *s_serverinfo_file = NULL;
 281
 282 #endif
 283
 284 #ifndef OPENSSL_NO_PSK
 285 static char *psk_identity="Client_identity";
 286 char *psk_key=NULL; /* by default PSK is not used */
 287
 288 static unsigned int psk_server_cb(SSL *ssl, const char *identity,
 289         unsigned char *psk, unsigned int max_psk_len)
 290         {
 291         unsigned int psk_len = 0;
 292         int ret;
 293         BIGNUM *bn = NULL;
 294
 295         if (s_debug)
 296                 BIO_printf(bio_s_out,"psk_server_cb\n");
 297         if (!identity)
 298                 {
 299                 BIO_printf(bio_err,"Error: client did not send PSK identity\n");
 300                 goto out_err;
 301                 }
 302         if (s_debug)
 303                 BIO_printf(bio_s_out,"identity_len=%d identity=%s\n",
 304                         identity ? (int)strlen(identity) : 0, identity);
 305
 306         /* here we could lookup the given identity e.g. from a database */
 307         if (strcmp(identity, psk_identity) != 0)
 308                 {
 309                 BIO_printf(bio_s_out, "PSK error: client identity not found"
 310                            " (got '%s' expected '%s')\n", identity,
 311                            psk_identity);
 312                 goto out_err;
 313                 }
 314         if (s_debug)
 315                 BIO_printf(bio_s_out, "PSK client identity found\n");
 316
 317         /* convert the PSK key to binary */
 318         ret = BN_hex2bn(&bn, psk_key);
 319         if (!ret)
 320                 {
 321                 BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
 322                 if (bn)
 323                         BN_free(bn);
 324                 return 0;
 325                 }
 326         if (BN_num_bytes(bn) > (int)max_psk_len)
 327                 {
 328                 BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
 329                         max_psk_len, BN_num_bytes(bn));
 330                 BN_free(bn);
 331                 return 0;
 332                 }
 333
 334         ret = BN_bn2bin(bn, psk);
 335         BN_free(bn);
 336
 337         if (ret < 0)
 338                 goto out_err;
 339         psk_len = (unsigned int)ret;
 340
 341         if (s_debug)
 342                 BIO_printf(bio_s_out, "fetched PSK len=%d\n", psk_len);
 343         return psk_len;
 344  out_err:
 345         if (s_debug)
 346                 BIO_printf(bio_err, "Error in PSK server callback\n");
 347         return 0;
 348         }
 349 #endif
 350
 351 #ifndef OPENSSL_NO_SRP
 352 /* This is a context that we pass to callbacks */
 353 typedef struct srpsrvparm_st
 354         {
 355         char *login;
 356         SRP_VBASE *vb;
 357         SRP_user_pwd *user;
 358         } srpsrvparm;
 359
 360 /* This callback pretends to require some asynchronous logic in order to obtain
 361    a verifier. When the callback is called for a new connection we return
 362    with a negative value. This will provoke the accept etc to return with
 363    an LOOKUP_X509. The main logic of the reinvokes the suspended call
 364    (which would normally occur after a worker has finished) and we
 365    set the user parameters.
 366 */
 367 static int ssl_srp_server_param_cb(SSL *s, int *ad, void *arg)
 368         {
 369         srpsrvparm *p = (srpsrvparm *)arg;
 370         if (p->login == NULL && p->user == NULL )
 371                 {
 372                 p->login = SSL_get_srp_username(s);
 373                 BIO_printf(bio_err, "SRP username = \"%s\"\n", p->login);
 374                 return (-1) ;
 375                 }
 376
 377         if (p->user == NULL)
 378                 {
 379                 BIO_printf(bio_err, "User %s doesn't exist\n", p->login);
 380                 return SSL3_AL_FATAL;
 381                 }
 382         if (SSL_set_srp_server_param(s, p->user->N, p->user->g, p->user->s, p->user->v,
 383                                      p->user->info) < 0)
 384                 {
 385                 *ad = SSL_AD_INTERNAL_ERROR;
 386                 return SSL3_AL_FATAL;
 387                 }
 388         BIO_printf(bio_err, "SRP parameters set: username = \"%s\" info=\"%s\" \n", p->login,p->user->info);
 389         /* need to check whether there are memory leaks */
 390         p->user = NULL;
 391         p->login = NULL;
 392         return SSL_ERROR_NONE;
 393         }
 394
 395 #endif
 396
 397 #ifdef MONOLITH
 398 static void s_server_init(void)
 399         {
 400         accept_socket=-1;
 401         s_server_verify=SSL_VERIFY_NONE;
 402         s_dcert_file=NULL;
 403         s_dkey_file=NULL;
 404         s_dchain_file=NULL;
 405         s_cert_file=TEST_CERT;
 406         s_key_file=NULL;
 407         s_chain_file=NULL;
 408 #ifndef OPENSSL_NO_TLSEXT
 409         s_cert_file2=TEST_CERT2;
 410         s_key_file2=NULL;
 411         ctx2=NULL;
 412 #endif
 413 #ifdef FIONBIO
 414         s_nbio=0;
 415 #endif
 416         s_nbio_test=0;
 417         ctx=NULL;
 418         www=0;
 419
 420         bio_s_out=NULL;
 421         s_debug=0;
 422         s_msg=0;
 423         s_quiet=0;
 424         s_brief=0;
 425         hack=0;
 426 #ifndef OPENSSL_NO_ENGINE
 427         engine_id=NULL;
 428 #endif
 429         }
 430 #endif
 431
 432 static void sv_usage(void)
 433         {
 434         BIO_printf(bio_err,"usage: s_server [args ...]\n");
 435         BIO_printf(bio_err,"\n");
 436         BIO_printf(bio_err," -accept port  - TCP/IP port to accept on (default is %d)\n",PORT);
 437         BIO_printf(bio_err," -unix path    - unix domain socket to accept on\n");
 438         BIO_printf(bio_err," -unlink       - for -unix, unlink existing socket first\n");
 439         BIO_printf(bio_err," -context arg  - set session ID context\n");
 440         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 441         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
 442         BIO_printf(bio_err," -verify_return_error - return verification errors\n");
 443         BIO_printf(bio_err," -cert arg     - certificate file to use\n");
 444         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
 445         BIO_printf(bio_err," -naccept arg  - terminate after 'arg' connections\n");
 446 #ifndef OPENSSL_NO_TLSEXT
 447         BIO_printf(bio_err," -serverinfo arg - PEM serverinfo file for certificate\n");
 448 #endif
 449     BIO_printf(bio_err," -no_resumption_on_reneg - set SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION flag\n");
 450         BIO_printf(bio_err," -crl_check    - check the peer certificate has not been revoked by its CA.\n" \
 451                            "                 The CRL(s) are appended to the certificate file\n");
 452         BIO_printf(bio_err," -crl_check_all - check the peer certificate has not been revoked by its CA\n" \
 453                            "                 or any other CRL in the CA chain. CRL(s) are appened to the\n" \
 454                            "                 the certificate file.\n");
 455         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
 456         BIO_printf(bio_err," -key arg      - Private Key file to use, in cert file if\n");
 457         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
 458         BIO_printf(bio_err," -keyform arg  - key format (PEM, DER or ENGINE) PEM default\n");
 459         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
 460         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
 461         BIO_printf(bio_err," -dcertform x  - second certificate format (PEM or DER) PEM default\n");
 462         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
 463         BIO_printf(bio_err," -dkeyform arg - second key format (PEM, DER or ENGINE) PEM default\n");
 464         BIO_printf(bio_err," -dpass arg    - second private key file pass phrase source\n");
 465         BIO_printf(bio_err," -dhparam arg  - DH parameter file to use, in cert file if not specified\n");
 466         BIO_printf(bio_err,"                 or a default set of parameters is used\n");
 467 #ifndef OPENSSL_NO_ECDH
 468         BIO_printf(bio_err," -named_curve arg  - Elliptic curve name to use for ephemeral ECDH keys.\n" \
 469                            "                 Use \"openssl ecparam -list_curves\" for all names\n" \
 470                            "                 (default is nistp256).\n");
 471 #endif
 472 #ifdef FIONBIO
 473         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 474 #endif
 475         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
 476         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 477         BIO_printf(bio_err," -debug        - Print more output\n");
 478         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 479         BIO_printf(bio_err," -state        - Print the SSL states\n");
 480         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 481         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 482         BIO_printf(bio_err," -trusted_first - Use locally trusted CA's first when building trust chain\n");
 483         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
 484         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
 485         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences\n");
 486         BIO_printf(bio_err," -quiet        - No server output\n");
 487         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
 488 #ifndef OPENSSL_NO_PSK
 489         BIO_printf(bio_err," -psk_hint arg - PSK identity hint to use\n");
 490         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
 491 # ifndef OPENSSL_NO_JPAKE
 492         BIO_printf(bio_err," -jpake arg    - JPAKE secret to use\n");
 493 # endif
 494 #endif
 495 #ifndef OPENSSL_NO_SRP
 496         BIO_printf(bio_err," -srpvfile file      - The verifier file for SRP\n");
 497         BIO_printf(bio_err," -srpuserseed string - A seed string for a default user salt.\n");
 498 #endif
 499 #ifndef OPENSSL_NO_SSL3_METHOD
 500         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
 501 #endif
 502         BIO_printf(bio_err," -tls1_2       - Just talk TLSv1.2\n");
 503         BIO_printf(bio_err," -tls1_1       - Just talk TLSv1.1\n");
 504         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
 505         BIO_printf(bio_err," -dtls1        - Just talk DTLSv1\n");
 506         BIO_printf(bio_err," -dtls1_2      - Just talk DTLSv1.2\n");
 507         BIO_printf(bio_err," -timeout      - Enable timeouts\n");
 508         BIO_printf(bio_err," -mtu          - Set link layer MTU\n");
 509         BIO_printf(bio_err," -chain        - Read a certificate chain\n");
 510         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
 511         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
 512         BIO_printf(bio_err," -no_tls1_1    - Just disable TLSv1.1\n");
 513         BIO_printf(bio_err," -no_tls1_2    - Just disable TLSv1.2\n");
 514 #ifndef OPENSSL_NO_DH
 515         BIO_printf(bio_err," -no_dhe       - Disable ephemeral DH\n");
 516 #endif
 517 #ifndef OPENSSL_NO_ECDH
 518         BIO_printf(bio_err," -no_ecdhe     - Disable ephemeral ECDH\n");
 519 #endif
 520         BIO_printf(bio_err, "-no_resume_ephemeral - Disable caching and tickets if ephemeral (EC)DH is used\n");
 521         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");
 522         BIO_printf(bio_err," -hack         - workaround for early Netscape code\n");
 523         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
 524         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
 525         BIO_printf(bio_err," -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
 526         BIO_printf(bio_err,"                 with the assumption it contains a complete HTTP response.\n");
 527 #ifndef OPENSSL_NO_ENGINE
 528         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 529 #endif
 530         BIO_printf(bio_err," -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");
 531         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 532 #ifndef OPENSSL_NO_TLSEXT
 533         BIO_printf(bio_err," -servername host - servername for HostName TLS extension\n");
 534         BIO_printf(bio_err," -servername_fatal - on mismatch send fatal alert (default warning alert)\n");
 535         BIO_printf(bio_err," -cert2 arg    - certificate file to use for servername\n");
 536         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT2);
 537         BIO_printf(bio_err," -key2 arg     - Private Key file to use for servername, in cert file if\n");
 538         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT2);
 539         BIO_printf(bio_err," -tlsextdebug  - hex dump of all TLS extensions received\n");
 540         BIO_printf(bio_err," -no_ticket    - disable use of RFC4507bis session tickets\n");
 541         BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
 542 # ifndef OPENSSL_NO_NEXTPROTONEG
 543         BIO_printf(bio_err," -nextprotoneg arg - set the advertised protocols for the NPN extension (comma-separated list)\n");
 544 # endif
 545 # ifndef OPENSSL_NO_SRTP
 546         BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
 547 # endif
 548         BIO_printf(bio_err," -alpn arg  - set the advertised protocols for the ALPN extension (comma-separated list)\n");
 549 #endif
 550         BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
 551         BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
 552         BIO_printf(bio_err," -status           - respond to certificate status requests\n");
 553         BIO_printf(bio_err," -status_verbose   - enable status request verbose printout\n");
 554         BIO_printf(bio_err," -status_timeout n - status request responder timeout\n");
 555         BIO_printf(bio_err," -status_url URL   - status request fallback URL\n");
 556         }
 557
 558 static int local_argc=0;
 559 static char **local_argv;
 560
 561 #ifdef CHARSET_EBCDIC
 562 static int ebcdic_new(BIO *bi);
 563 static int ebcdic_free(BIO *a);
 564 static int ebcdic_read(BIO *b, char *out, int outl);
 565 static int ebcdic_write(BIO *b, const char *in, int inl);
 566 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr);
 567 static int ebcdic_gets(BIO *bp, char *buf, int size);
 568 static int ebcdic_puts(BIO *bp, const char *str);
 569
 570 #define BIO_TYPE_EBCDIC_FILTER  (18|0x0200)
 571 static BIO_METHOD methods_ebcdic=
 572         {
 573         BIO_TYPE_EBCDIC_FILTER,
 574         "EBCDIC/ASCII filter",
 575         ebcdic_write,
 576         ebcdic_read,
 577         ebcdic_puts,
 578         ebcdic_gets,
 579         ebcdic_ctrl,
 580         ebcdic_new,
 581         ebcdic_free,
 582         };
 583
 584 typedef struct
 585 {
 586         size_t  alloced;
 587         char    buff[1];
 588 } EBCDIC_OUTBUFF;
 589
 590 BIO_METHOD *BIO_f_ebcdic_filter()
 591 {
 592         return(&methods_ebcdic);
 593 }
 594
 595 static int ebcdic_new(BIO *bi)
 596 {
 597         EBCDIC_OUTBUFF *wbuf;
 598
 599         wbuf = (EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);
 600         wbuf->alloced = 1024;
 601         wbuf->buff[0] = '\0';
 602
 603         bi->ptr=(char *)wbuf;
 604         bi->init=1;
 605         bi->flags=0;
 606         return(1);
 607 }
 608
 609 static int ebcdic_free(BIO *a)
 610 {
 611         if (a == NULL) return(0);
 612         if (a->ptr != NULL)
 613                 OPENSSL_free(a->ptr);
 614         a->ptr=NULL;
 615         a->init=0;
 616         a->flags=0;
 617         return(1);
 618 }
 619
 620 static int ebcdic_read(BIO *b, char *out, int outl)
 621 {
 622         int ret=0;
 623
 624         if (out == NULL || outl == 0) return(0);
 625         if (b->next_bio == NULL) return(0);
 626
 627         ret=BIO_read(b->next_bio,out,outl);
 628         if (ret > 0)
 629                 ascii2ebcdic(out,out,ret);
 630         return(ret);
 631 }
 632
 633 static int ebcdic_write(BIO *b, const char *in, int inl)
 634 {
 635         EBCDIC_OUTBUFF *wbuf;
 636         int ret=0;
 637         int num;
 638         unsigned char n;
 639
 640         if ((in == NULL) || (inl <= 0)) return(0);
 641         if (b->next_bio == NULL) return(0);
 642
 643         wbuf=(EBCDIC_OUTBUFF *)b->ptr;
 644
 645         if (inl > (num = wbuf->alloced))
 646         {
 647                 num = num + num;  /* double the size */
 648                 if (num < inl)
 649                         num = inl;
 650                 OPENSSL_free(wbuf);
 651                 wbuf=(EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);
 652
 653                 wbuf->alloced = num;
 654                 wbuf->buff[0] = '\0';
 655
 656                 b->ptr=(char *)wbuf;
 657         }
 658
 659         ebcdic2ascii(wbuf->buff, in, inl);
 660
 661         ret=BIO_write(b->next_bio, wbuf->buff, inl);
 662
 663         return(ret);
 664 }
 665
 666 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr)
 667 {
 668         long ret;
 669
 670         if (b->next_bio == NULL) return(0);
 671         switch (cmd)
 672         {
 673         case BIO_CTRL_DUP:
 674                 ret=0L;
 675                 break;
 676         default:
 677                 ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
 678                 break;
 679         }
 680         return(ret);
 681 }
 682
 683 static int ebcdic_gets(BIO *bp, char *buf, int size)
 684 {
 685         int i, ret=0;
 686         if (bp->next_bio == NULL) return(0);
 687 /*      return(BIO_gets(bp->next_bio,buf,size));*/
 688         for (i=0; i<size-1; ++i)
 689         {
 690                 ret = ebcdic_read(bp,&buf[i],1);
 691                 if (ret <= 0)
 692                         break;
 693                 else if (buf[i] == '\n')
 694                 {
 695                         ++i;
 696                         break;
 697                 }
 698         }
 699         if (i < size)
 700                 buf[i] = '\0';
 701         return (ret < 0 && i == 0) ? ret : i;
 702 }
 703
 704 static int ebcdic_puts(BIO *bp, const char *str)
 705 {
 706         if (bp->next_bio == NULL) return(0);
 707         return ebcdic_write(bp, str, strlen(str));
 708 }
 709 #endif
 710
 711 #ifndef OPENSSL_NO_TLSEXT
 712
 713 /* This is a context that we pass to callbacks */
 714 typedef struct tlsextctx_st {
 715    char * servername;
 716    BIO * biodebug;
 717    int extension_error;
 718 } tlsextctx;
 719
 720
 721 static int ssl_servername_cb(SSL *s, int *ad, void *arg)
 722         {
 723         tlsextctx * p = (tlsextctx *) arg;
 724         const char * servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
 725         if (servername && p->biodebug)
 726                 BIO_printf(p->biodebug,"Hostname in TLS extension: \"%s\"\n",servername);
 727
 728         if (!p->servername)
 729                 return SSL_TLSEXT_ERR_NOACK;
 730
 731         if (servername)
 732                 {
 733                 if (strcasecmp(servername,p->servername))
 734                         return p->extension_error;
 735                 if (ctx2)
 736                         {
 737                         BIO_printf(p->biodebug,"Switching server context.\n");
 738                         SSL_set_SSL_CTX(s,ctx2);
 739                         }
 740                 }
 741         return SSL_TLSEXT_ERR_OK;
 742 }
 743
 744 /* Structure passed to cert status callback */
 745
 746 typedef struct tlsextstatusctx_st {
 747    /* Default responder to use */
 748    char *host, *path, *port;
 749    int use_ssl;
 750    int timeout;
 751    BIO *err;
 752    int verbose;
 753 } tlsextstatusctx;
 754
 755 static tlsextstatusctx tlscstatp = {NULL, NULL, NULL, 0, -1, NULL, 0};
 756
 757 /* Certificate Status callback. This is called when a client includes a
 758  * certificate status request extension.
 759  *
 760  * This is a simplified version. It examines certificates each time and
 761  * makes one OCSP responder query for each request.
 762  *
 763  * A full version would store details such as the OCSP certificate IDs and
 764  * minimise the number of OCSP responses by caching them until they were
 765  * considered "expired".
 766  */
 767
 768 static int cert_status_cb(SSL *s, void *arg)
 769         {
 770         tlsextstatusctx *srctx = arg;
 771         BIO *err = srctx->err;
 772         char *host, *port, *path;
 773         int use_ssl;
 774         unsigned char *rspder = NULL;
 775         int rspderlen;
 776         STACK_OF(OPENSSL_STRING) *aia = NULL;
 777         X509 *x = NULL;
 778         X509_STORE_CTX inctx;
 779         X509_OBJECT obj;
 780         OCSP_REQUEST *req = NULL;
 781         OCSP_RESPONSE *resp = NULL;
 782         OCSP_CERTID *id = NULL;
 783         STACK_OF(X509_EXTENSION) *exts;
 784         int ret = SSL_TLSEXT_ERR_NOACK;
 785         int i;
 786 #if 0
 787 STACK_OF(OCSP_RESPID) *ids;
 788 SSL_get_tlsext_status_ids(s, &ids);
 789 BIO_printf(err, "cert_status: received %d ids\n", sk_OCSP_RESPID_num(ids));
 790 #endif
 791         if (srctx->verbose)
 792                 BIO_puts(err, "cert_status: callback called\n");
 793         /* Build up OCSP query from server certificate */
 794         x = SSL_get_certificate(s);
 795         aia = X509_get1_ocsp(x);
 796         if (aia)
 797                 {
 798                 if (!OCSP_parse_url(sk_OPENSSL_STRING_value(aia, 0),
 799                         &host, &port, &path, &use_ssl))
 800                         {
 801                         BIO_puts(err, "cert_status: can't parse AIA URL\n");
 802                         goto err;
 803                         }
 804                 if (srctx->verbose)
 805                         BIO_printf(err, "cert_status: AIA URL: %s\n",
 806                                         sk_OPENSSL_STRING_value(aia, 0));
 807                 }
 808         else
 809                 {
 810                 if (!srctx->host)
 811                         {
 812                         BIO_puts(srctx->err, "cert_status: no AIA and no default responder URL\n");
 813                         goto done;
 814                         }
 815                 host = srctx->host;
 816                 path = srctx->path;
 817                 port = srctx->port;
 818                 use_ssl = srctx->use_ssl;
 819                 }
 820
 821         if (!X509_STORE_CTX_init(&inctx,
 822                                 SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)),
 823                                 NULL, NULL))
 824                 goto err;
 825         if (X509_STORE_get_by_subject(&inctx,X509_LU_X509,
 826                                 X509_get_issuer_name(x),&obj) <= 0)
 827                 {
 828                 BIO_puts(err, "cert_status: Can't retrieve issuer certificate.\n");
 829                 X509_STORE_CTX_cleanup(&inctx);
 830                 goto done;
 831                 }
 832         req = OCSP_REQUEST_new();
 833         if (!req)
 834                 goto err;
 835         id = OCSP_cert_to_id(NULL, x, obj.data.x509);
 836         X509_free(obj.data.x509);
 837         X509_STORE_CTX_cleanup(&inctx);
 838         if (!id)
 839                 goto err;
 840         if (!OCSP_request_add0_id(req, id))
 841                 goto err;
 842         id = NULL;
 843         /* Add any extensions to the request */
 844         SSL_get_tlsext_status_exts(s, &exts);
 845         for (i = 0; i < sk_X509_EXTENSION_num(exts); i++)
 846                 {
 847                 X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
 848                 if (!OCSP_REQUEST_add_ext(req, ext, -1))
 849                         goto err;
 850                 }
 851         resp = process_responder(err, req, host, path, port, use_ssl, NULL,
 852                                         srctx->timeout);
 853         if (!resp)
 854                 {
 855                 BIO_puts(err, "cert_status: error querying responder\n");
 856                 goto done;
 857                 }
 858         rspderlen = i2d_OCSP_RESPONSE(resp, &rspder);
 859         if (rspderlen <= 0)
 860                 goto err;
 861         SSL_set_tlsext_status_ocsp_resp(s, rspder, rspderlen);
 862         if (srctx->verbose)
 863                 {
 864                 BIO_puts(err, "cert_status: ocsp response sent:\n");
 865                 OCSP_RESPONSE_print(err, resp, 2);
 866                 }
 867         ret = SSL_TLSEXT_ERR_OK;
 868         done:
 869         if (ret != SSL_TLSEXT_ERR_OK)
 870                 ERR_print_errors(err);
 871         if (aia)
 872                 {
 873                 OPENSSL_free(host);
 874                 OPENSSL_free(path);
 875                 OPENSSL_free(port);
 876                 X509_email_free(aia);
 877                 }
 878         if (id)
 879                 OCSP_CERTID_free(id);
 880         if (req)
 881                 OCSP_REQUEST_free(req);
 882         if (resp)
 883                 OCSP_RESPONSE_free(resp);
 884         return ret;
 885         err:
 886         ret = SSL_TLSEXT_ERR_ALERT_FATAL;
 887         goto done;
 888         }
 889
 890 # ifndef OPENSSL_NO_NEXTPROTONEG
 891 /* This is the context that we pass to next_proto_cb */
 892 typedef struct tlsextnextprotoctx_st {
 893         unsigned char *data;
 894         unsigned int len;
 895 } tlsextnextprotoctx;
 896
 897 static int next_proto_cb(SSL *s, const unsigned char **data, unsigned int *len, void *arg)
 898         {
 899         tlsextnextprotoctx *next_proto = arg;
 900
 901         *data = next_proto->data;
 902         *len = next_proto->len;
 903
 904         return SSL_TLSEXT_ERR_OK;
 905         }
 906 # endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
 907
 908 /* This the context that we pass to alpn_cb */
 909 typedef struct tlsextalpnctx_st {
 910         unsigned char *data;
 911         unsigned short len;
 912 } tlsextalpnctx;
 913
 914 static int alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
 915         {
 916         tlsextalpnctx *alpn_ctx = arg;
 917
 918         if (!s_quiet)
 919                 {
 920                 /* We can assume that |in| is syntactically valid. */
 921                 unsigned i;
 922                 BIO_printf(bio_s_out, "ALPN protocols advertised by the client: ");
 923                 for (i = 0; i < inlen; )
 924                         {
 925                         if (i)
 926                                 BIO_write(bio_s_out, ", ", 2);
 927                         BIO_write(bio_s_out, &in[i + 1], in[i]);
 928                         i += in[i] + 1;
 929                         }
 930                 BIO_write(bio_s_out, "\n", 1);
 931                 }
 932
 933         if (SSL_select_next_proto((unsigned char**) out, outlen, alpn_ctx->data, alpn_ctx->len, in, inlen) !=
 934             OPENSSL_NPN_NEGOTIATED)
 935                 {
 936                 return SSL_TLSEXT_ERR_NOACK;
 937                 }
 938
 939         if (!s_quiet)
 940                 {
 941                 BIO_printf(bio_s_out, "ALPN protocols selected: ");
 942                 BIO_write(bio_s_out, *out, *outlen);
 943                 BIO_write(bio_s_out, "\n", 1);
 944                 }
 945
 946         return SSL_TLSEXT_ERR_OK;
 947         }
 948 #endif  /* ndef OPENSSL_NO_TLSEXT */
 949
 950 static int not_resumable_sess_cb(SSL *s, int is_forward_secure)
 951         {
 952         /* disable resumption for sessions with forward secure ciphers */
 953         return is_forward_secure;
 954         }
 955
 956 int MAIN(int, char **);
 957
 958 #ifndef OPENSSL_NO_JPAKE
 959 static char *jpake_secret = NULL;
 960 #define no_jpake !jpake_secret
 961 #else
 962 #define no_jpake 1
 963 #endif
 964 #ifndef OPENSSL_NO_SRP
 965         static srpsrvparm srp_callback_parm;
 966 #endif
 967 #ifndef OPENSSL_NO_SRTP
 968 static char *srtp_profiles = NULL;
 969 #endif
 970
 971 int MAIN(int argc, char *argv[])
 972         {
 973         X509_VERIFY_PARAM *vpm = NULL;
 974         int badarg = 0;
 975         short port=PORT;
 976         const char *unix_path=NULL;
 977 #ifndef NO_SYS_UN_H
 978         int unlink_unix_path=0;
 979 #endif
 980         int (*server_cb)(char *hostname, int s, int stype, unsigned char *context);
 981         char *CApath=NULL,*CAfile=NULL;
 982         char *chCApath=NULL,*chCAfile=NULL;
 983         char *vfyCApath=NULL,*vfyCAfile=NULL;
 984         unsigned char *context = NULL;
 985         char *dhfile = NULL;
 986         int badop=0;
 987         int ret=1;
 988         int build_chain = 0;
 989         int no_tmp_rsa=0,no_dhe=0,no_ecdhe=0,nocert=0;
 990         int state=0;
 991         const SSL_METHOD *meth=NULL;
 992         int socket_type=SOCK_STREAM;
 993         ENGINE *e=NULL;
 994         char *inrand=NULL;
 995         int s_cert_format = FORMAT_PEM, s_key_format = FORMAT_PEM;
 996         char *passarg = NULL, *pass = NULL;
 997         char *dpassarg = NULL, *dpass = NULL;
 998         int s_dcert_format = FORMAT_PEM, s_dkey_format = FORMAT_PEM;
 999         X509 *s_cert = NULL, *s_dcert = NULL;
1000         STACK_OF(X509) *s_chain = NULL, *s_dchain = NULL;
1001         EVP_PKEY *s_key = NULL, *s_dkey = NULL;
1002         int no_cache = 0, ext_cache = 0;
1003         int rev = 0, naccept = -1;
1004         int sdebug = 0;
1005 #ifndef OPENSSL_NO_TLSEXT
1006         EVP_PKEY *s_key2 = NULL;
1007         X509 *s_cert2 = NULL;
1008         tlsextctx tlsextcbp = {NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING};
1009 # ifndef OPENSSL_NO_NEXTPROTONEG
1010         const char *next_proto_neg_in = NULL;
1011         tlsextnextprotoctx next_proto = { NULL, 0};
1012 # endif
1013         const char *alpn_in = NULL;
1014         tlsextalpnctx alpn_ctx = { NULL, 0};
1015 #endif
1016 #ifndef OPENSSL_NO_PSK
1017         /* by default do not send a PSK identity hint */
1018         static char *psk_identity_hint=NULL;
1019 #endif
1020 #ifndef OPENSSL_NO_SRP
1021         char *srpuserseed = NULL;
1022         char *srp_verifier_file = NULL;
1023 #endif
1024         SSL_EXCERT *exc = NULL;
1025         SSL_CONF_CTX *cctx = NULL;
1026         STACK_OF(OPENSSL_STRING) *ssl_args = NULL;
1027
1028         char *crl_file = NULL;
1029         int crl_format = FORMAT_PEM;
1030         int crl_download = 0;
1031         STACK_OF(X509_CRL) *crls = NULL;
1032
1033         meth=SSLv23_server_method();
1034
1035         local_argc=argc;
1036         local_argv=argv;
1037
1038         apps_startup();
1039 #ifdef MONOLITH
1040         s_server_init();
1041 #endif
1042
1043         if (bio_err == NULL)
1044                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
1045
1046         if (!load_config(bio_err, NULL))
1047                 goto end;
1048
1049         cctx = SSL_CONF_CTX_new();
1050         if (!cctx)
1051                 goto end;
1052         SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_SERVER);
1053         SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CMDLINE);
1054
1055         verify_depth=0;
1056 #ifdef FIONBIO
1057         s_nbio=0;
1058 #endif
1059         s_nbio_test=0;
1060
1061         argc--;
1062         argv++;
1063
1064         while (argc >= 1)
1065                 {
1066                 if      ((strcmp(*argv,"-port") == 0) ||
1067                          (strcmp(*argv,"-accept") == 0))
1068                         {
1069                         if (--argc < 1) goto bad;
1070                         if (!extract_port(*(++argv),&port))
1071                                 goto bad;
1072                         }
1073                 else if (strcmp(*argv,"-unix") == 0)
1074                         {
1075 #ifdef NO_SYS_UN_H
1076                         BIO_printf(bio_err, "unix domain sockets unsupported\n");
1077                         goto bad;
1078 #else
1079                         if (--argc < 1) goto bad;
1080                         unix_path = *(++argv);
1081 #endif
1082                         }
1083                 else if (strcmp(*argv,"-unlink") == 0)
1084                         {
1085 #ifdef NO_SYS_UN_H
1086                         BIO_printf(bio_err, "unix domain sockets unsupported\n");
1087                         goto bad;
1088 #else
1089                         unlink_unix_path = 1;
1090 #endif
1091                         }
1092                 else if (strcmp(*argv,"-naccept") == 0)
1093                         {
1094                         if (--argc < 1) goto bad;
1095                         naccept = atol(*(++argv));
1096                         if (naccept <= 0)
1097                                 {
1098                                 BIO_printf(bio_err, "bad accept value %s\n",
1099                                                         *argv);
1100                                 goto bad;
1101                                 }
1102                         }
1103                 else if (strcmp(*argv,"-verify") == 0)
1104                         {
1105                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
1106                         if (--argc < 1) goto bad;
1107                         verify_depth=atoi(*(++argv));
1108                         if (!s_quiet)
1109                                 BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
1110                         }
1111                 else if (strcmp(*argv,"-Verify") == 0)
1112                         {
1113                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
1114                                 SSL_VERIFY_CLIENT_ONCE;
1115                         if (--argc < 1) goto bad;
1116                         verify_depth=atoi(*(++argv));
1117                         if (!s_quiet)
1118                                 BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
1119                         }
1120                 else if (strcmp(*argv,"-context") == 0)
1121                         {
1122                         if (--argc < 1) goto bad;
1123                         context= (unsigned char *)*(++argv);
1124                         }
1125                 else if (strcmp(*argv,"-cert") == 0)
1126                         {
1127                         if (--argc < 1) goto bad;
1128                         s_cert_file= *(++argv);
1129                         }
1130                 else if (strcmp(*argv,"-CRL") == 0)
1131                         {
1132                         if (--argc < 1) goto bad;
1133                         crl_file= *(++argv);
1134                         }
1135                 else if (strcmp(*argv,"-crl_download") == 0)
1136                         crl_download = 1;
1137 #ifndef OPENSSL_NO_TLSEXT
1138                 else if (strcmp(*argv,"-serverinfo") == 0)
1139                         {
1140                         if (--argc < 1) goto bad;
1141                         s_serverinfo_file = *(++argv);
1142                         }
1143 #endif
1144                 else if (strcmp(*argv,"-certform") == 0)
1145                         {
1146                         if (--argc < 1) goto bad;
1147                         s_cert_format = str2fmt(*(++argv));
1148                         }
1149                 else if (strcmp(*argv,"-key") == 0)
1150                         {
1151                         if (--argc < 1) goto bad;
1152                         s_key_file= *(++argv);
1153                         }
1154                 else if (strcmp(*argv,"-keyform") == 0)
1155                         {
1156                         if (--argc < 1) goto bad;
1157                         s_key_format = str2fmt(*(++argv));
1158                         }
1159                 else if (strcmp(*argv,"-pass") == 0)
1160                         {
1161                         if (--argc < 1) goto bad;
1162                         passarg = *(++argv);
1163                         }
1164                 else if (strcmp(*argv,"-cert_chain") == 0)
1165                         {
1166                         if (--argc < 1) goto bad;
1167                         s_chain_file= *(++argv);
1168                         }
1169                 else if (strcmp(*argv,"-dhparam") == 0)
1170                         {
1171                         if (--argc < 1) goto bad;
1172                         dhfile = *(++argv);
1173                         }
1174                 else if (strcmp(*argv,"-dcertform") == 0)
1175                         {
1176                         if (--argc < 1) goto bad;
1177                         s_dcert_format = str2fmt(*(++argv));
1178                         }
1179                 else if (strcmp(*argv,"-dcert") == 0)
1180                         {
1181                         if (--argc < 1) goto bad;
1182                         s_dcert_file= *(++argv);
1183                         }
1184                 else if (strcmp(*argv,"-dkeyform") == 0)
1185                         {
1186                         if (--argc < 1) goto bad;
1187                         s_dkey_format = str2fmt(*(++argv));
1188                         }
1189                 else if (strcmp(*argv,"-dpass") == 0)
1190                         {
1191                         if (--argc < 1) goto bad;
1192                         dpassarg = *(++argv);
1193                         }
1194                 else if (strcmp(*argv,"-dkey") == 0)
1195                         {
1196                         if (--argc < 1) goto bad;
1197                         s_dkey_file= *(++argv);
1198                         }
1199                 else if (strcmp(*argv,"-dcert_chain") == 0)
1200                         {
1201                         if (--argc < 1) goto bad;
1202                         s_dchain_file= *(++argv);
1203                         }
1204                 else if (strcmp(*argv,"-nocert") == 0)
1205                         {
1206                         nocert=1;
1207                         }
1208                 else if (strcmp(*argv,"-CApath") == 0)
1209                         {
1210                         if (--argc < 1) goto bad;
1211                         CApath= *(++argv);
1212                         }
1213                 else if (strcmp(*argv,"-chainCApath") == 0)
1214                         {
1215                         if (--argc < 1) goto bad;
1216                         chCApath= *(++argv);
1217                         }
1218                 else if (strcmp(*argv,"-verifyCApath") == 0)
1219                         {
1220                         if (--argc < 1) goto bad;
1221                         vfyCApath= *(++argv);
1222                         }
1223                 else if (strcmp(*argv,"-no_cache") == 0)
1224                         no_cache = 1;
1225                 else if (strcmp(*argv,"-ext_cache") == 0)
1226                         ext_cache = 1;
1227                 else if (strcmp(*argv,"-CRLform") == 0)
1228                         {
1229                         if (--argc < 1) goto bad;
1230                         crl_format = str2fmt(*(++argv));
1231                         }
1232                 else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm))
1233                         {
1234                         if (badarg)
1235                                 goto bad;
1236                         continue;
1237                         }
1238                 else if (args_excert(&argv, &argc, &badarg, bio_err, &exc))
1239                         {
1240                         if (badarg)
1241                                 goto bad;
1242                         continue;
1243                         }
1244                 else if (args_ssl(&argv, &argc, cctx, &badarg, bio_err, &ssl_args))
1245                         {
1246                         if (badarg)
1247                                 goto bad;
1248                         continue;
1249                         }
1250                 else if (strcmp(*argv,"-verify_return_error") == 0)
1251                         verify_return_error = 1;
1252                 else if (strcmp(*argv,"-verify_quiet") == 0)
1253                         verify_quiet = 1;
1254                 else if (strcmp(*argv,"-build_chain") == 0)
1255                         build_chain = 1;
1256                 else if (strcmp(*argv,"-CAfile") == 0)
1257                         {
1258                         if (--argc < 1) goto bad;
1259                         CAfile= *(++argv);
1260                         }
1261                 else if (strcmp(*argv,"-chainCAfile") == 0)
1262                         {
1263                         if (--argc < 1) goto bad;
1264                         chCAfile= *(++argv);
1265                         }
1266                 else if (strcmp(*argv,"-verifyCAfile") == 0)
1267                         {
1268                         if (--argc < 1) goto bad;
1269                         vfyCAfile= *(++argv);
1270                         }
1271 #ifdef FIONBIO
1272                 else if (strcmp(*argv,"-nbio") == 0)
1273                         { s_nbio=1; }
1274 #endif
1275                 else if (strcmp(*argv,"-nbio_test") == 0)
1276                         {
1277 #ifdef FIONBIO
1278                         s_nbio=1;
1279 #endif
1280                         s_nbio_test=1;
1281                         }
1282                 else if (strcmp(*argv,"-ign_eof") == 0)
1283                         s_ign_eof=1;
1284                 else if (strcmp(*argv,"-no_ign_eof") == 0)
1285                         s_ign_eof=0;
1286                 else if (strcmp(*argv,"-debug") == 0)
1287                         { s_debug=1; }
1288 #ifndef OPENSSL_NO_TLSEXT
1289                 else if (strcmp(*argv,"-tlsextdebug") == 0)
1290                         s_tlsextdebug=1;
1291                 else if (strcmp(*argv,"-status") == 0)
1292                         s_tlsextstatus=1;
1293                 else if (strcmp(*argv,"-status_verbose") == 0)
1294                         {
1295                         s_tlsextstatus=1;
1296                         tlscstatp.verbose = 1;
1297                         }
1298                 else if (!strcmp(*argv, "-status_timeout"))
1299                         {
1300                         s_tlsextstatus=1;
1301                         if (--argc < 1) goto bad;
1302                         tlscstatp.timeout = atoi(*(++argv));
1303                         }
1304                 else if (!strcmp(*argv, "-status_url"))
1305                         {
1306                         s_tlsextstatus=1;
1307                         if (--argc < 1) goto bad;
1308                         if (!OCSP_parse_url(*(++argv),
1309                                         &tlscstatp.host,
1310                                         &tlscstatp.port,
1311                                         &tlscstatp.path,
1312                                         &tlscstatp.use_ssl))
1313                                 {
1314                                 BIO_printf(bio_err, "Error parsing URL\n");
1315                                 goto bad;
1316                                 }
1317                         }
1318 #endif
1319                 else if (strcmp(*argv,"-msg") == 0)
1320                         { s_msg=1; }
1321                 else if (strcmp(*argv,"-msgfile") == 0)
1322                         {
1323                         if (--argc < 1) goto bad;
1324                         bio_s_msg = BIO_new_file(*(++argv), "w");
1325                         }
1326 #ifndef OPENSSL_NO_SSL_TRACE
1327                 else if (strcmp(*argv,"-trace") == 0)
1328                         { s_msg=2; }
1329 #endif
1330                 else if (strcmp(*argv,"-security_debug") == 0)
1331                         { sdebug=1; }
1332                 else if (strcmp(*argv,"-security_debug_verbose") == 0)
1333                         { sdebug=2; }
1334                 else if (strcmp(*argv,"-hack") == 0)
1335                         { hack=1; }
1336                 else if (strcmp(*argv,"-state") == 0)
1337                         { state=1; }
1338                 else if (strcmp(*argv,"-crlf") == 0)
1339                         { s_crlf=1; }
1340                 else if (strcmp(*argv,"-quiet") == 0)
1341                         { s_quiet=1; }
1342                 else if (strcmp(*argv,"-brief") == 0)
1343                         {
1344                         s_quiet=1;
1345                         s_brief=1;
1346                         verify_quiet=1;
1347                         }
1348                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
1349                         { no_tmp_rsa=1; }
1350                 else if (strcmp(*argv,"-no_dhe") == 0)
1351                         { no_dhe=1; }
1352                 else if (strcmp(*argv,"-no_ecdhe") == 0)
1353                         { no_ecdhe=1; }
1354                 else if (strcmp(*argv,"-no_resume_ephemeral") == 0)
1355                         { no_resume_ephemeral = 1; }
1356 #ifndef OPENSSL_NO_PSK
1357                 else if (strcmp(*argv,"-psk_hint") == 0)
1358                         {
1359                         if (--argc < 1) goto bad;
1360                         psk_identity_hint= *(++argv);
1361                         }
1362                 else if (strcmp(*argv,"-psk") == 0)
1363                         {
1364                         size_t i;
1365
1366                         if (--argc < 1) goto bad;
1367                         psk_key=*(++argv);
1368                         for (i=0; i<strlen(psk_key); i++)
1369                                 {
1370                                 if (isxdigit((unsigned char)psk_key[i]))
1371                                         continue;
1372                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
1373                                 goto bad;
1374                                 }
1375                         }
1376 #endif
1377 #ifndef OPENSSL_NO_SRP
1378                 else if (strcmp(*argv, "-srpvfile") == 0)
1379                         {
1380                         if (--argc < 1) goto bad;
1381                         srp_verifier_file = *(++argv);
1382                         meth = TLSv1_server_method();
1383                         }
1384                 else if (strcmp(*argv, "-srpuserseed") == 0)
1385                         {
1386                         if (--argc < 1) goto bad;
1387                         srpuserseed = *(++argv);
1388                         meth = TLSv1_server_method();
1389                         }
1390 #endif
1391                 else if (strcmp(*argv,"-rev") == 0)
1392                         { rev=1; }
1393                 else if (strcmp(*argv,"-www") == 0)
1394                         { www=1; }
1395                 else if (strcmp(*argv,"-WWW") == 0)
1396                         { www=2; }
1397                 else if (strcmp(*argv,"-HTTP") == 0)
1398                         { www=3; }
1399 #ifndef OPENSSL_NO_SSL3_METHOD
1400                 else if (strcmp(*argv,"-ssl3") == 0)
1401                         { meth=SSLv3_server_method(); }
1402 #endif
1403 #ifndef OPENSSL_NO_TLS1
1404                 else if (strcmp(*argv,"-tls1") == 0)
1405                         { meth=TLSv1_server_method(); }
1406                 else if (strcmp(*argv,"-tls1_1") == 0)
1407                         { meth=TLSv1_1_server_method(); }
1408                 else if (strcmp(*argv,"-tls1_2") == 0)
1409                         { meth=TLSv1_2_server_method(); }
1410 #endif
1411 #ifndef OPENSSL_NO_DTLS1
1412                 else if (strcmp(*argv,"-dtls") == 0)
1413                         {
1414                         meth=DTLS_server_method();
1415                         socket_type = SOCK_DGRAM;
1416                         }
1417                 else if (strcmp(*argv,"-dtls1") == 0)
1418                         {
1419                         meth=DTLSv1_server_method();
1420                         socket_type = SOCK_DGRAM;
1421                         }
1422                 else if (strcmp(*argv,"-dtls1_2") == 0)
1423                         {
1424                         meth=DTLSv1_2_server_method();
1425                         socket_type = SOCK_DGRAM;
1426                         }
1427                 else if (strcmp(*argv,"-timeout") == 0)
1428                         enable_timeouts = 1;
1429                 else if (strcmp(*argv,"-mtu") == 0)
1430                         {
1431                         if (--argc < 1) goto bad;
1432                         socket_mtu = atol(*(++argv));
1433                         }
1434                 else if (strcmp(*argv, "-chain") == 0)
1435                         cert_chain = 1;
1436 #endif
1437                 else if (strcmp(*argv, "-id_prefix") == 0)
1438                         {
1439                         if (--argc < 1) goto bad;
1440                         session_id_prefix = *(++argv);
1441                         }
1442 #ifndef OPENSSL_NO_ENGINE
1443                 else if (strcmp(*argv,"-engine") == 0)
1444                         {
1445                         if (--argc < 1) goto bad;
1446                         engine_id= *(++argv);
1447                         }
1448 #endif
1449                 else if (strcmp(*argv,"-rand") == 0)
1450                         {
1451                         if (--argc < 1) goto bad;
1452                         inrand= *(++argv);
1453                         }
1454 #ifndef OPENSSL_NO_TLSEXT
1455                 else if (strcmp(*argv,"-servername") == 0)
1456                         {
1457                         if (--argc < 1) goto bad;
1458                         tlsextcbp.servername= *(++argv);
1459                         }
1460                 else if (strcmp(*argv,"-servername_fatal") == 0)
1461                         { tlsextcbp.extension_error = SSL_TLSEXT_ERR_ALERT_FATAL; }
1462                 else if (strcmp(*argv,"-cert2") == 0)
1463                         {
1464                         if (--argc < 1) goto bad;
1465                         s_cert_file2= *(++argv);
1466                         }
1467                 else if (strcmp(*argv,"-key2") == 0)
1468                         {
1469                         if (--argc < 1) goto bad;
1470                         s_key_file2= *(++argv);
1471                         }
1472 # ifndef OPENSSL_NO_NEXTPROTONEG
1473                 else if (strcmp(*argv,"-nextprotoneg") == 0)
1474                         {
1475                         if (--argc < 1) goto bad;
1476                         next_proto_neg_in = *(++argv);
1477                         }
1478 # endif
1479                 else if (strcmp(*argv,"-alpn") == 0)
1480                         {
1481                         if (--argc < 1) goto bad;
1482                         alpn_in = *(++argv);
1483                         }
1484 #endif
1485 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
1486                 else if (strcmp(*argv,"-jpake") == 0)
1487                         {
1488                         if (--argc < 1) goto bad;
1489                         jpake_secret = *(++argv);
1490                         }
1491 #endif
1492 #ifndef OPENSSL_NO_SRTP
1493                 else if (strcmp(*argv,"-use_srtp") == 0)
1494                         {
1495                         if (--argc < 1) goto bad;
1496                         srtp_profiles = *(++argv);
1497                         }
1498 #endif
1499                 else if (strcmp(*argv,"-keymatexport") == 0)
1500                         {
1501                         if (--argc < 1) goto bad;
1502                         keymatexportlabel= *(++argv);
1503                         }
1504                 else if (strcmp(*argv,"-keymatexportlen") == 0)
1505                         {
1506                         if (--argc < 1) goto bad;
1507                         keymatexportlen=atoi(*(++argv));
1508                         if (keymatexportlen == 0) goto bad;
1509                         }
1510                 else
1511                         {
1512                         BIO_printf(bio_err,"unknown option %s\n",*argv);
1513                         badop=1;
1514                         break;
1515                         }
1516                 argc--;
1517                 argv++;
1518                 }
1519         if (badop)
1520                 {
1521 bad:
1522                 sv_usage();
1523                 goto end;
1524                 }
1525 #ifndef OPENSSL_NO_DTLS1
1526         if (www && socket_type == SOCK_DGRAM)
1527                 {
1528                 BIO_printf(bio_err,
1529                                 "Can't use -HTTP, -www or -WWW with DTLS\n");
1530                 goto end;
1531                 }
1532 #endif
1533
1534         if (unix_path && (socket_type != SOCK_STREAM))
1535                 {
1536                 BIO_printf(bio_err, "Can't use unix sockets and datagrams together\n");
1537                         goto end;
1538                 }
1539 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
1540         if (jpake_secret)
1541                 {
1542                 if (psk_key)
1543                         {
1544                         BIO_printf(bio_err,
1545                                    "Can't use JPAKE and PSK together\n");
1546                         goto end;
1547                         }
1548                 psk_identity = "JPAKE";
1549                 }
1550 #endif
1551
1552         SSL_load_error_strings();
1553         OpenSSL_add_ssl_algorithms();
1554
1555 #ifndef OPENSSL_NO_ENGINE
1556         e = setup_engine(bio_err, engine_id, 1);
1557 #endif
1558
1559         if (!app_passwd(bio_err, passarg, dpassarg, &pass, &dpass))
1560                 {
1561                 BIO_printf(bio_err, "Error getting password\n");
1562                 goto end;
1563                 }
1564
1565
1566         if (s_key_file == NULL)
1567                 s_key_file = s_cert_file;
1568 #ifndef OPENSSL_NO_TLSEXT
1569         if (s_key_file2 == NULL)
1570                 s_key_file2 = s_cert_file2;
1571 #endif
1572
1573         if (!load_excert(&exc, bio_err))
1574                 goto end;
1575
1576         if (nocert == 0)
1577                 {
1578                 s_key = load_key(bio_err, s_key_file, s_key_format, 0, pass, e,
1579                        "server certificate private key file");
1580                 if (!s_key)
1581                         {
1582                         ERR_print_errors(bio_err);
1583                         goto end;
1584                         }
1585
1586                 s_cert = load_cert(bio_err,s_cert_file,s_cert_format,
1587                         NULL, e, "server certificate file");
1588
1589                 if (!s_cert)
1590                         {
1591                         ERR_print_errors(bio_err);
1592                         goto end;
1593                         }
1594                 if (s_chain_file)
1595                         {
1596                         s_chain = load_certs(bio_err, s_chain_file,FORMAT_PEM,
1597                                         NULL, e, "server certificate chain");
1598                         if (!s_chain)
1599                                 goto end;
1600                         }
1601
1602 #ifndef OPENSSL_NO_TLSEXT
1603                 if (tlsextcbp.servername)
1604                         {
1605                         s_key2 = load_key(bio_err, s_key_file2, s_key_format, 0, pass, e,
1606                                 "second server certificate private key file");
1607                         if (!s_key2)
1608                                 {
1609                                 ERR_print_errors(bio_err);
1610                                 goto end;
1611                                 }
1612
1613                         s_cert2 = load_cert(bio_err,s_cert_file2,s_cert_format,
1614                                 NULL, e, "second server certificate file");
1615
1616                         if (!s_cert2)
1617                                 {
1618                                 ERR_print_errors(bio_err);
1619                                 goto end;
1620                                 }
1621                         }
1622 #endif /* OPENSSL_NO_TLSEXT */
1623                 }
1624
1625 #if !defined(OPENSSL_NO_TLSEXT)
1626 # if !defined(OPENSSL_NO_NEXTPROTONEG)
1627         if (next_proto_neg_in)
1628                 {
1629                 unsigned short len;
1630                 next_proto.data = next_protos_parse(&len, next_proto_neg_in);
1631                 if (next_proto.data == NULL)
1632                         goto end;
1633                 next_proto.len = len;
1634                 }
1635         else
1636                 {
1637                 next_proto.data = NULL;
1638                 }
1639 # endif
1640         alpn_ctx.data = NULL;
1641         if (alpn_in)
1642                 {
1643                 unsigned short len;
1644                 alpn_ctx.data = next_protos_parse(&len, alpn_in);
1645                 if (alpn_ctx.data == NULL)
1646                         goto end;
1647                 alpn_ctx.len = len;
1648                 }
1649 #endif
1650
1651         if (crl_file)
1652                 {
1653                 X509_CRL *crl;
1654                 crl = load_crl(crl_file, crl_format);
1655                 if (!crl)
1656                         {
1657                         BIO_puts(bio_err, "Error loading CRL\n");
1658                         ERR_print_errors(bio_err);
1659                         goto end;
1660                         }
1661                 crls = sk_X509_CRL_new_null();
1662                 if (!crls || !sk_X509_CRL_push(crls, crl))
1663                         {
1664                         BIO_puts(bio_err, "Error adding CRL\n");
1665                         ERR_print_errors(bio_err);
1666                         X509_CRL_free(crl);
1667                         goto end;
1668                         }
1669                 }
1670
1671
1672         if (s_dcert_file)
1673                 {
1674
1675                 if (s_dkey_file == NULL)
1676                         s_dkey_file = s_dcert_file;
1677
1678                 s_dkey = load_key(bio_err, s_dkey_file, s_dkey_format,
1679                                 0, dpass, e,
1680                                "second certificate private key file");
1681                 if (!s_dkey)
1682                         {
1683                         ERR_print_errors(bio_err);
1684                         goto end;
1685                         }
1686
1687                 s_dcert = load_cert(bio_err,s_dcert_file,s_dcert_format,
1688                                 NULL, e, "second server certificate file");
1689
1690                 if (!s_dcert)
1691                         {
1692                         ERR_print_errors(bio_err);
1693                         goto end;
1694                         }
1695                 if (s_dchain_file)
1696                         {
1697                         s_dchain = load_certs(bio_err, s_dchain_file,FORMAT_PEM,
1698                                 NULL, e, "second server certificate chain");
1699                         if (!s_dchain)
1700                                 goto end;
1701                         }
1702
1703                 }
1704
1705         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1706                 && !RAND_status())
1707                 {
1708                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1709                 }
1710         if (inrand != NULL)
1711                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1712                         app_RAND_load_files(inrand));
1713
1714         if (bio_s_out == NULL)
1715                 {
1716                 if (s_quiet && !s_debug)
1717                         {
1718                         bio_s_out=BIO_new(BIO_s_null());
1719                         if (s_msg && !bio_s_msg)
1720                                 bio_s_msg=BIO_new_fp(stdout,BIO_NOCLOSE);
1721                         }
1722                 else
1723                         {
1724                         if (bio_s_out == NULL)
1725                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1726                         }
1727                 }
1728
1729 #if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
1730         if (nocert)
1731 #endif
1732                 {
1733                 s_cert_file=NULL;
1734                 s_key_file=NULL;
1735                 s_dcert_file=NULL;
1736                 s_dkey_file=NULL;
1737 #ifndef OPENSSL_NO_TLSEXT
1738                 s_cert_file2=NULL;
1739                 s_key_file2=NULL;
1740 #endif
1741                 }
1742
1743         ctx=SSL_CTX_new(meth);
1744         if (sdebug)
1745                 ssl_ctx_security_debug(ctx, bio_err, sdebug);
1746         if (ctx == NULL)
1747                 {
1748                 ERR_print_errors(bio_err);
1749                 goto end;
1750                 }
1751         if (session_id_prefix)
1752                 {
1753                 if(strlen(session_id_prefix) >= 32)
1754                         BIO_printf(bio_err,
1755 "warning: id_prefix is too long, only one new session will be possible\n");
1756                 if(!SSL_CTX_set_generate_session_id(ctx, generate_session_id))
1757                         {
1758                         BIO_printf(bio_err,"error setting 'id_prefix'\n");
1759                         ERR_print_errors(bio_err);
1760                         goto end;
1761                         }
1762                 BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
1763                 }
1764         SSL_CTX_set_quiet_shutdown(ctx,1);
1765         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
1766         if (exc) ssl_ctx_set_excert(ctx, exc);
1767         /* DTLS: partial reads end up discarding unread UDP bytes :-(
1768          * Setting read ahead solves this problem.
1769          */
1770         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1771
1772         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1773         if (no_cache)
1774                 SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
1775         else if (ext_cache)
1776                 init_session_cache_ctx(ctx);
1777         else
1778                 SSL_CTX_sess_set_cache_size(ctx,128);
1779
1780 #ifndef OPENSSL_NO_SRTP
1781         if (srtp_profiles != NULL)
1782                 SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
1783 #endif
1784
1785 #if 0
1786         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
1787 #endif
1788
1789 #if 0
1790         if (s_cert_file == NULL)
1791                 {
1792                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
1793                 goto end;
1794                 }
1795 #endif
1796
1797         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1798                 (!SSL_CTX_set_default_verify_paths(ctx)))
1799                 {
1800                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
1801                 ERR_print_errors(bio_err);
1802                 /* goto end; */
1803                 }
1804         if (vpm)
1805                 SSL_CTX_set1_param(ctx, vpm);
1806
1807         ssl_ctx_add_crls(ctx, crls, 0);
1808         if (!args_ssl_call(ctx, bio_err, cctx, ssl_args, no_ecdhe, no_jpake))
1809                 goto end;
1810
1811         if (!ssl_load_stores(ctx, vfyCApath, vfyCAfile, chCApath, chCAfile,
1812                                                 crls, crl_download))
1813                 {
1814                 BIO_printf(bio_err, "Error loading store locations\n");
1815                 ERR_print_errors(bio_err);
1816                 goto end;
1817                 }
1818
1819 #ifndef OPENSSL_NO_TLSEXT
1820         if (s_cert2)
1821                 {
1822                 ctx2=SSL_CTX_new(meth);
1823                 if (ctx2 == NULL)
1824                         {
1825                         ERR_print_errors(bio_err);
1826                         goto end;
1827                         }
1828                 }
1829
1830         if (ctx2)
1831                 {
1832                 BIO_printf(bio_s_out,"Setting secondary ctx parameters\n");
1833
1834                 if (sdebug)
1835                         ssl_ctx_security_debug(ctx, bio_err, sdebug);
1836
1837                 if (session_id_prefix)
1838                         {
1839                         if(strlen(session_id_prefix) >= 32)
1840                                 BIO_printf(bio_err,
1841                                         "warning: id_prefix is too long, only one new session will be possible\n");
1842                         if(!SSL_CTX_set_generate_session_id(ctx2, generate_session_id))
1843                                 {
1844                                 BIO_printf(bio_err,"error setting 'id_prefix'\n");
1845                                 ERR_print_errors(bio_err);
1846                                 goto end;
1847                                 }
1848                         BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
1849                         }
1850                 SSL_CTX_set_quiet_shutdown(ctx2,1);
1851                 if (hack) SSL_CTX_set_options(ctx2,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
1852                 if (exc) ssl_ctx_set_excert(ctx2, exc);
1853                 /* DTLS: partial reads end up discarding unread UDP bytes :-(
1854                  * Setting read ahead solves this problem.
1855                  */
1856                 if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx2, 1);
1857
1858                 if (state) SSL_CTX_set_info_callback(ctx2,apps_ssl_info_callback);
1859
1860                 if (no_cache)
1861                         SSL_CTX_set_session_cache_mode(ctx2,SSL_SESS_CACHE_OFF);
1862                 else if (ext_cache)
1863                         init_session_cache_ctx(ctx2);
1864                 else
1865                         SSL_CTX_sess_set_cache_size(ctx2,128);
1866
1867                 if ((!SSL_CTX_load_verify_locations(ctx2,CAfile,CApath)) ||
1868                         (!SSL_CTX_set_default_verify_paths(ctx2)))
1869                         {
1870                         ERR_print_errors(bio_err);
1871                         }
1872                 if (vpm)
1873                         SSL_CTX_set1_param(ctx2, vpm);
1874
1875                 ssl_ctx_add_crls(ctx2, crls, 0);
1876                 if (!args_ssl_call(ctx2, bio_err, cctx, ssl_args, no_ecdhe, no_jpake))
1877                         goto end;
1878                 }
1879
1880 # ifndef OPENSSL_NO_NEXTPROTONEG
1881         if (next_proto.data)
1882                 SSL_CTX_set_next_protos_advertised_cb(ctx, next_proto_cb, &next_proto);
1883 # endif
1884         if (alpn_ctx.data)
1885                 SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx);
1886 #endif
1887
1888 #ifndef OPENSSL_NO_DH
1889         if (!no_dhe)
1890                 {
1891                 DH *dh=NULL;
1892
1893                 if (dhfile)
1894                         dh = load_dh_param(dhfile);
1895                 else if (s_cert_file)
1896                         dh = load_dh_param(s_cert_file);
1897
1898                 if (dh != NULL)
1899                         {
1900                         BIO_printf(bio_s_out,"Setting temp DH parameters\n");
1901                         }
1902                 else
1903                         {
1904                         BIO_printf(bio_s_out,"Using default temp DH parameters\n");
1905                         }
1906                 (void)BIO_flush(bio_s_out);
1907
1908                 if (dh == NULL)
1909                         SSL_CTX_set_dh_auto(ctx, 1);
1910                 else if (!SSL_CTX_set_tmp_dh(ctx,dh))
1911                         {
1912                         BIO_puts(bio_err, "Error setting temp DH parameters\n");
1913                         ERR_print_errors(bio_err);
1914                         DH_free(dh);
1915                         goto end;
1916                         }
1917 #ifndef OPENSSL_NO_TLSEXT
1918                 if (ctx2)
1919                         {
1920                         if (!dhfile)
1921                                 {
1922                                 DH *dh2=load_dh_param(s_cert_file2);
1923                                 if (dh2 != NULL)
1924                                         {
1925                                         BIO_printf(bio_s_out,"Setting temp DH parameters\n");
1926                                         (void)BIO_flush(bio_s_out);
1927
1928                                         DH_free(dh);
1929                                         dh = dh2;
1930                                         }
1931                                 }
1932                         if (dh == NULL)
1933                                 SSL_CTX_set_dh_auto(ctx2, 1);
1934                         else if (!SSL_CTX_set_tmp_dh(ctx2,dh))
1935                                 {
1936                                 BIO_puts(bio_err, "Error setting temp DH parameters\n");
1937                                 ERR_print_errors(bio_err);
1938                                 DH_free(dh);
1939                                 goto end;
1940                                 }
1941                         }
1942 #endif
1943                 DH_free(dh);
1944                 }
1945 #endif
1946
1947         if (!set_cert_key_stuff(ctx, s_cert, s_key, s_chain, build_chain))
1948                 goto end;
1949 #ifndef OPENSSL_NO_TLSEXT
1950         if (s_serverinfo_file != NULL
1951             && !SSL_CTX_use_serverinfo_file(ctx, s_serverinfo_file))
1952                 {
1953                 ERR_print_errors(bio_err);
1954                 goto end;
1955                 }
1956 #endif
1957 #ifndef OPENSSL_NO_TLSEXT
1958         if (ctx2 && !set_cert_key_stuff(ctx2,s_cert2,s_key2, NULL, build_chain))
1959                 goto end;
1960 #endif
1961         if (s_dcert != NULL)
1962                 {
1963                 if (!set_cert_key_stuff(ctx, s_dcert, s_dkey, s_dchain, build_chain))
1964                         goto end;
1965                 }
1966
1967 #ifndef OPENSSL_NO_RSA
1968 #if 1
1969         if (!no_tmp_rsa)
1970                 {
1971                 SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
1972 #ifndef OPENSSL_NO_TLSEXT
1973                 if (ctx2)
1974                         SSL_CTX_set_tmp_rsa_callback(ctx2,tmp_rsa_cb);
1975 #endif
1976                 }
1977 #else
1978         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
1979                 {
1980                 RSA *rsa;
1981
1982                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
1983                 BIO_flush(bio_s_out);
1984
1985                 rsa=RSA_generate_key(512,RSA_F4,NULL);
1986
1987                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
1988                         {
1989                         ERR_print_errors(bio_err);
1990                         goto end;
1991                         }
1992 #ifndef OPENSSL_NO_TLSEXT
1993                         if (ctx2)
1994                                 {
1995                                 if (!SSL_CTX_set_tmp_rsa(ctx2,rsa))
1996                                         {
1997                                         ERR_print_errors(bio_err);
1998                                         goto end;
1999                                         }
2000                                 }
2001 #endif
2002                 RSA_free(rsa);
2003                 BIO_printf(bio_s_out,"\n");
2004                 }
2005 #endif
2006 #endif
2007
2008         if (no_resume_ephemeral)
2009                 {
2010                 SSL_CTX_set_not_resumable_session_callback(ctx, not_resumable_sess_cb);
2011 #ifndef OPENSSL_NO_TLSEXT
2012                 if (ctx2)
2013                         SSL_CTX_set_not_resumable_session_callback(ctx2, not_resumable_sess_cb);
2014 #endif
2015                 }
2016
2017 #ifndef OPENSSL_NO_PSK
2018 #ifdef OPENSSL_NO_JPAKE
2019         if (psk_key != NULL)
2020 #else
2021         if (psk_key != NULL || jpake_secret)
2022 #endif
2023                 {
2024                 if (s_debug)
2025                         BIO_printf(bio_s_out, "PSK key given or JPAKE in use, setting server callback\n");
2026                 SSL_CTX_set_psk_server_callback(ctx, psk_server_cb);
2027                 }
2028
2029         if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint))
2030                 {
2031                 BIO_printf(bio_err,"error setting PSK identity hint to context\n");
2032                 ERR_print_errors(bio_err);
2033                 goto end;
2034                 }
2035 #endif
2036
2037         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
2038         SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,
2039                 sizeof s_server_session_id_context);
2040
2041         /* Set DTLS cookie generation and verification callbacks */
2042         SSL_CTX_set_cookie_generate_cb(ctx, generate_cookie_callback);
2043         SSL_CTX_set_cookie_verify_cb(ctx, verify_cookie_callback);
2044
2045 #ifndef OPENSSL_NO_TLSEXT
2046         if (ctx2)
2047                 {
2048                 SSL_CTX_set_verify(ctx2,s_server_verify,verify_callback);
2049                 SSL_CTX_set_session_id_context(ctx2,(void*)&s_server_session_id_context,
2050                         sizeof s_server_session_id_context);
2051
2052                 tlsextcbp.biodebug = bio_s_out;
2053                 SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
2054                 SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
2055                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
2056                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
2057                 }
2058 #endif
2059
2060 #ifndef OPENSSL_NO_SRP
2061         if (srp_verifier_file != NULL)
2062                 {
2063                 srp_callback_parm.vb = SRP_VBASE_new(srpuserseed);
2064                 srp_callback_parm.user = NULL;
2065                 srp_callback_parm.login = NULL;
2066                 if ((ret = SRP_VBASE_init(srp_callback_parm.vb, srp_verifier_file)) != SRP_NO_ERROR)
2067                         {
2068                         BIO_printf(bio_err,
2069                                    "Cannot initialize SRP verifier file \"%s\":ret=%d\n",
2070                                    srp_verifier_file, ret);
2071                                 goto end;
2072                         }
2073                 SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE,verify_callback);
2074                 SSL_CTX_set_srp_cb_arg(ctx, &srp_callback_parm);
2075                 SSL_CTX_set_srp_username_callback(ctx, ssl_srp_server_param_cb);
2076                 }
2077         else
2078 #endif
2079         if (CAfile != NULL)
2080                 {
2081                 SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
2082 #ifndef OPENSSL_NO_TLSEXT
2083                 if (ctx2)
2084                         SSL_CTX_set_client_CA_list(ctx2,SSL_load_client_CA_file(CAfile));
2085 #endif
2086                 }
2087
2088         BIO_printf(bio_s_out,"ACCEPT\n");
2089         (void)BIO_flush(bio_s_out);
2090         if (rev)
2091                 server_cb = rev_body;
2092         else if (www)
2093                 server_cb = www_body;
2094         else
2095                 server_cb = sv_body;
2096 #ifndef NO_SYS_UN_H
2097         if (unix_path)
2098                 {
2099                 if (unlink_unix_path)
2100                         unlink(unix_path);
2101                 do_server_unix(unix_path,&accept_socket,server_cb, context, naccept);
2102                 }
2103         else
2104 #endif
2105                 do_server(port,socket_type,&accept_socket,server_cb, context, naccept);
2106         print_stats(bio_s_out,ctx);
2107         ret=0;
2108 end:
2109         if (ctx != NULL) SSL_CTX_free(ctx);
2110         if (s_cert)
2111                 X509_free(s_cert);
2112         if (crls)
2113                 sk_X509_CRL_pop_free(crls, X509_CRL_free);
2114         if (s_dcert)
2115                 X509_free(s_dcert);
2116         if (s_key)
2117                 EVP_PKEY_free(s_key);
2118         if (s_dkey)
2119                 EVP_PKEY_free(s_dkey);
2120         if (s_chain)
2121                 sk_X509_pop_free(s_chain, X509_free);
2122         if (s_dchain)
2123                 sk_X509_pop_free(s_dchain, X509_free);
2124         if (pass)
2125                 OPENSSL_free(pass);
2126         if (dpass)
2127                 OPENSSL_free(dpass);
2128         if (vpm)
2129                 X509_VERIFY_PARAM_free(vpm);
2130         free_sessions();
2131 #ifndef OPENSSL_NO_TLSEXT
2132         if (tlscstatp.host)
2133                 OPENSSL_free(tlscstatp.host);
2134         if (tlscstatp.port)
2135                 OPENSSL_free(tlscstatp.port);
2136         if (tlscstatp.path)
2137                 OPENSSL_free(tlscstatp.path);
2138         if (ctx2 != NULL) SSL_CTX_free(ctx2);
2139         if (s_cert2)
2140                 X509_free(s_cert2);
2141         if (s_key2)
2142                 EVP_PKEY_free(s_key2);
2143         if (serverinfo_in != NULL)
2144                 BIO_free(serverinfo_in);
2145 # ifndef OPENSSL_NO_NEXTPROTONEG
2146         if (next_proto.data)
2147                 OPENSSL_free(next_proto.data);
2148 # endif
2149         if (alpn_ctx.data)
2150                 OPENSSL_free(alpn_ctx.data);
2151 #endif
2152         ssl_excert_free(exc);
2153         if (ssl_args)
2154                 sk_OPENSSL_STRING_free(ssl_args);
2155         if (cctx)
2156                 SSL_CONF_CTX_free(cctx);
2157 #ifndef OPENSSL_NO_JPAKE
2158         if (jpake_secret && psk_key)
2159                 OPENSSL_free(psk_key);
2160 #endif
2161         if (bio_s_out != NULL)
2162                 {
2163                 BIO_free(bio_s_out);
2164                 bio_s_out=NULL;
2165                 }
2166         if (bio_s_msg != NULL)
2167                 {
2168                 BIO_free(bio_s_msg);
2169                 bio_s_msg = NULL;
2170                 }
2171         apps_shutdown();
2172         OPENSSL_EXIT(ret);
2173         }
2174
2175 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
2176         {
2177         BIO_printf(bio,"%4ld items in the session cache\n",
2178                 SSL_CTX_sess_number(ssl_ctx));
2179         BIO_printf(bio,"%4ld client connects (SSL_connect())\n",
2180                 SSL_CTX_sess_connect(ssl_ctx));
2181         BIO_printf(bio,"%4ld client renegotiates (SSL_connect())\n",
2182                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
2183         BIO_printf(bio,"%4ld client connects that finished\n",
2184                 SSL_CTX_sess_connect_good(ssl_ctx));
2185         BIO_printf(bio,"%4ld server accepts (SSL_accept())\n",
2186                 SSL_CTX_sess_accept(ssl_ctx));
2187         BIO_printf(bio,"%4ld server renegotiates (SSL_accept())\n",
2188                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
2189         BIO_printf(bio,"%4ld server accepts that finished\n",
2190                 SSL_CTX_sess_accept_good(ssl_ctx));
2191         BIO_printf(bio,"%4ld session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
2192         BIO_printf(bio,"%4ld session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
2193         BIO_printf(bio,"%4ld session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
2194         BIO_printf(bio,"%4ld callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
2195         BIO_printf(bio,"%4ld cache full overflows (%ld allowed)\n",
2196                 SSL_CTX_sess_cache_full(ssl_ctx),
2197                 SSL_CTX_sess_get_cache_size(ssl_ctx));
2198         }
2199
2200 static int sv_body(char *hostname, int s, int stype, unsigned char *context)
2201         {
2202         char *buf=NULL;
2203         fd_set readfds;
2204         int ret=1,width;
2205         int k,i;
2206         unsigned long l;
2207         SSL *con=NULL;
2208         BIO *sbio;
2209 #ifndef OPENSSL_NO_KRB5
2210         KSSL_CTX *kctx;
2211 #endif
2212         struct timeval timeout;
2213 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
2214         struct timeval tv;
2215 #else
2216         struct timeval *timeoutp;
2217 #endif
2218
2219         if ((buf=OPENSSL_malloc(bufsize)) == NULL)
2220                 {
2221                 BIO_printf(bio_err,"out of memory\n");
2222                 goto err;
2223                 }
2224 #ifdef FIONBIO
2225         if (s_nbio)
2226                 {
2227                 unsigned long sl=1;
2228
2229                 if (!s_quiet)
2230                         BIO_printf(bio_err,"turning on non blocking io\n");
2231                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
2232                         ERR_print_errors(bio_err);
2233                 }
2234 #endif
2235
2236         if (con == NULL) {
2237                 con=SSL_new(ctx);
2238 #ifndef OPENSSL_NO_TLSEXT
2239         if (s_tlsextdebug)
2240                 {
2241                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
2242                 SSL_set_tlsext_debug_arg(con, bio_s_out);
2243                 }
2244         if (s_tlsextstatus)
2245                 {
2246                 SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb);
2247                 tlscstatp.err = bio_err;
2248                 SSL_CTX_set_tlsext_status_arg(ctx, &tlscstatp);
2249                 }
2250 #endif
2251 #ifndef OPENSSL_NO_KRB5
2252                 if ((kctx = kssl_ctx_new()) != NULL)
2253                         {
2254                         SSL_set0_kssl_ctx(con, kctx);
2255                         kssl_ctx_setstring(kctx, KSSL_SERVICE, KRB5SVC);
2256                         kssl_ctx_setstring(kctx, KSSL_KEYTAB, KRB5KEYTAB);
2257                         }
2258 #endif  /* OPENSSL_NO_KRB5 */
2259                 if(context)
2260                       SSL_set_session_id_context(con, context,
2261                                                  strlen((char *)context));
2262         }
2263         SSL_clear(con);
2264 #if 0
2265 #ifdef TLSEXT_TYPE_opaque_prf_input
2266         SSL_set_tlsext_opaque_prf_input(con, "Test server", 11);
2267 #endif
2268 #endif
2269
2270         if (stype == SOCK_DGRAM)
2271                 {
2272
2273                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
2274
2275                 if (enable_timeouts)
2276                         {
2277                         timeout.tv_sec = 0;
2278                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
2279                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
2280
2281                         timeout.tv_sec = 0;
2282                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
2283                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
2284                         }
2285
2286                 if (socket_mtu)
2287                         {
2288                         if(socket_mtu < DTLS_get_link_min_mtu(con))
2289                                 {
2290                                 BIO_printf(bio_err,"MTU too small. Must be at least %ld\n",
2291                                         DTLS_get_link_min_mtu(con));
2292                                 ret = -1;
2293                                 BIO_free(sbio);
2294                                 goto err;
2295                                 }
2296                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
2297                         if(!DTLS_set_link_mtu(con, socket_mtu))
2298                                 {
2299                                 BIO_printf(bio_err, "Failed to set MTU\n");
2300                                 ret = -1;
2301                                 BIO_free(sbio);
2302                                 goto err;
2303                                 }
2304                         }
2305                 else
2306                         /* want to do MTU discovery */
2307                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
2308
2309         /* turn on cookie exchange */
2310         SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
2311                 }
2312         else
2313                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
2314
2315         if (s_nbio_test)
2316                 {
2317                 BIO *test;
2318
2319                 test=BIO_new(BIO_f_nbio_test());
2320                 sbio=BIO_push(test,sbio);
2321                 }
2322 #ifndef OPENSSL_NO_JPAKE
2323         if(jpake_secret)
2324                 jpake_server_auth(bio_s_out, sbio, jpake_secret);
2325 #endif
2326
2327         SSL_set_bio(con,sbio,sbio);
2328         SSL_set_accept_state(con);
2329         /* SSL_set_fd(con,s); */
2330
2331         if (s_debug)
2332                 {
2333                 SSL_set_debug(con, 1);
2334                 BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
2335                 BIO_set_callback_arg(SSL_get_rbio(con),(char *)bio_s_out);
2336                 }
2337         if (s_msg)
2338                 {
2339 #ifndef OPENSSL_NO_SSL_TRACE
2340                 if (s_msg == 2)
2341                         SSL_set_msg_callback(con, SSL_trace);
2342                 else
2343 #endif
2344                         SSL_set_msg_callback(con, msg_cb);
2345                 SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
2346                 }
2347 #ifndef OPENSSL_NO_TLSEXT
2348         if (s_tlsextdebug)
2349                 {
2350                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
2351                 SSL_set_tlsext_debug_arg(con, bio_s_out);
2352                 }
2353 #endif
2354
2355         width=s+1;
2356         for (;;)
2357                 {
2358                 int read_from_terminal;
2359                 int read_from_sslcon;
2360
2361                 read_from_terminal = 0;
2362                 read_from_sslcon = SSL_pending(con);
2363
2364                 if (!read_from_sslcon)
2365                         {
2366                         FD_ZERO(&readfds);
2367 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)
2368                         openssl_fdset(fileno(stdin),&readfds);
2369 #endif
2370                         openssl_fdset(s,&readfds);
2371                         /* Note: under VMS with SOCKETSHR the second parameter is
2372                          * currently of type (int *) whereas under other systems
2373                          * it is (void *) if you don't have a cast it will choke
2374                          * the compiler: if you do have a cast then you can either
2375                          * go for (int *) or (void *).
2376                          */
2377 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
2378                         /* Under DOS (non-djgpp) and Windows we can't select on stdin: only
2379                          * on sockets. As a workaround we timeout the select every
2380                          * second and check for any keypress. In a proper Windows
2381                          * application we wouldn't do this because it is inefficient.
2382                          */
2383                         tv.tv_sec = 1;
2384                         tv.tv_usec = 0;
2385                         i=select(width,(void *)&readfds,NULL,NULL,&tv);
2386                         if((i < 0) || (!i && !_kbhit() ) )continue;
2387                         if(_kbhit())
2388                                 read_from_terminal = 1;
2389 #else
2390                         if ((SSL_version(con) == DTLS1_VERSION) &&
2391                                 DTLSv1_get_timeout(con, &timeout))
2392                                 timeoutp = &timeout;
2393                         else
2394                                 timeoutp = NULL;
2395
2396                         i=select(width,(void *)&readfds,NULL,NULL,timeoutp);
2397
2398                         if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
2399                                 {
2400                                 BIO_printf(bio_err,"TIMEOUT occurred\n");
2401                                 }
2402
2403                         if (i <= 0) continue;
2404                         if (FD_ISSET(fileno(stdin),&readfds))
2405                                 read_from_terminal = 1;
2406 #endif
2407                         if (FD_ISSET(s,&readfds))
2408                                 read_from_sslcon = 1;
2409                         }
2410                 if (read_from_terminal)
2411                         {
2412                         if (s_crlf)
2413                                 {
2414                                 int j, lf_num;
2415
2416                                 i=raw_read_stdin(buf, bufsize/2);
2417                                 lf_num = 0;
2418                                 /* both loops are skipped when i <= 0 */
2419                                 for (j = 0; j < i; j++)
2420                                         if (buf[j] == '\n')
2421                                                 lf_num++;
2422                                 for (j = i-1; j >= 0; j--)
2423                                         {
2424                                         buf[j+lf_num] = buf[j];
2425                                         if (buf[j] == '\n')
2426                                                 {
2427                                                 lf_num--;
2428                                                 i++;
2429                                                 buf[j+lf_num] = '\r';
2430                                                 }
2431                                         }
2432                                 assert(lf_num == 0);
2433                                 }
2434                         else
2435                                 i=raw_read_stdin(buf,bufsize);
2436                         if (!s_quiet && !s_brief)
2437                                 {
2438                                 if ((i <= 0) || (buf[0] == 'Q'))
2439                                         {
2440                                         BIO_printf(bio_s_out,"DONE\n");
2441                                         SHUTDOWN(s);
2442                                         close_accept_socket();
2443                                         ret= -11;
2444                                         goto err;
2445                                         }
2446                                 if ((i <= 0) || (buf[0] == 'q'))
2447                                         {
2448                                         BIO_printf(bio_s_out,"DONE\n");
2449                                         if (SSL_version(con) != DTLS1_VERSION)
2450                         SHUTDOWN(s);
2451         /*                              close_accept_socket();
2452                                         ret= -11;*/
2453                                         goto err;
2454                                         }
2455
2456 #ifndef OPENSSL_NO_HEARTBEATS
2457                                 if ((buf[0] == 'B') &&
2458                                         ((buf[1] == '\n') || (buf[1] == '\r')))
2459                                         {
2460                                         BIO_printf(bio_err,"HEARTBEATING\n");
2461                                         SSL_heartbeat(con);
2462                                         i=0;
2463                                         continue;
2464                                         }
2465 #endif
2466                                 if ((buf[0] == 'r') &&
2467                                         ((buf[1] == '\n') || (buf[1] == '\r')))
2468                                         {
2469                                         SSL_renegotiate(con);
2470                                         i=SSL_do_handshake(con);
2471                                         printf("SSL_do_handshake -> %d\n",i);
2472                                         i=0; /*13; */
2473                                         continue;
2474                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
2475                                         }
2476                                 if ((buf[0] == 'R') &&
2477                                         ((buf[1] == '\n') || (buf[1] == '\r')))
2478                                         {
2479                                         SSL_set_verify(con,
2480                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
2481                                         SSL_renegotiate(con);
2482                                         i=SSL_do_handshake(con);
2483                                         printf("SSL_do_handshake -> %d\n",i);
2484                                         i=0; /* 13; */
2485                                         continue;
2486                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
2487                                         }
2488                                 if (buf[0] == 'P')
2489                                         {
2490                                         static const char *str="Lets print some clear text\n";
2491                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
2492                                         }
2493                                 if (buf[0] == 'S')
2494                                         {
2495                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
2496                                         }
2497                                 }
2498 #ifdef CHARSET_EBCDIC
2499                         ebcdic2ascii(buf,buf,i);
2500 #endif
2501                         l=k=0;
2502                         for (;;)
2503                                 {
2504                                 /* should do a select for the write */
2505 #ifdef RENEG
2506 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
2507 #endif
2508                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
2509 #ifndef OPENSSL_NO_SRP
2510                                 while (SSL_get_error(con,k) == SSL_ERROR_WANT_X509_LOOKUP)
2511                                         {
2512                                         BIO_printf(bio_s_out,"LOOKUP renego during write\n");
2513                                         srp_callback_parm.user = SRP_VBASE_get_by_user(srp_callback_parm.vb, srp_callback_parm.login);
2514                                         if (srp_callback_parm.user)
2515                                                 BIO_printf(bio_s_out,"LOOKUP done %s\n",srp_callback_parm.user->info);
2516                                         else
2517                                                 BIO_printf(bio_s_out,"LOOKUP not successful\n");
2518                                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
2519                                         }
2520 #endif
2521                                 switch (SSL_get_error(con,k))
2522                                         {
2523                                 case SSL_ERROR_NONE:
2524                                         break;
2525                                 case SSL_ERROR_WANT_WRITE:
2526                                 case SSL_ERROR_WANT_READ:
2527                                 case SSL_ERROR_WANT_X509_LOOKUP:
2528                                         BIO_printf(bio_s_out,"Write BLOCK\n");
2529                                         break;
2530                                 case SSL_ERROR_SYSCALL:
2531                                 case SSL_ERROR_SSL:
2532                                         BIO_printf(bio_s_out,"ERROR\n");
2533                                         ERR_print_errors(bio_err);
2534                                         ret=1;
2535                                         goto err;
2536                                         /* break; */
2537                                 case SSL_ERROR_ZERO_RETURN:
2538                                         BIO_printf(bio_s_out,"DONE\n");
2539                                         ret=1;
2540                                         goto err;
2541                                         }
2542                                 l+=k;
2543                                 i-=k;
2544                                 if (i <= 0) break;
2545                                 }
2546                         }
2547                 if (read_from_sslcon)
2548                         {
2549                         if (!SSL_is_init_finished(con))
2550                                 {
2551                                 i=init_ssl_connection(con);
2552
2553                                 if (i < 0)
2554                                         {
2555                                         ret=0;
2556                                         goto err;
2557                                         }
2558                                 else if (i == 0)
2559                                         {
2560                                         ret=1;
2561                                         goto err;
2562                                         }
2563                                 }
2564                         else
2565                                 {
2566 again:
2567                                 i=SSL_read(con,(char *)buf,bufsize);
2568 #ifndef OPENSSL_NO_SRP
2569                                 while (SSL_get_error(con,i) == SSL_ERROR_WANT_X509_LOOKUP)
2570                                         {
2571                                         BIO_printf(bio_s_out,"LOOKUP renego during read\n");
2572                                         srp_callback_parm.user = SRP_VBASE_get_by_user(srp_callback_parm.vb, srp_callback_parm.login);
2573                                         if (srp_callback_parm.user)
2574                                                 BIO_printf(bio_s_out,"LOOKUP done %s\n",srp_callback_parm.user->info);
2575                                         else
2576                                                 BIO_printf(bio_s_out,"LOOKUP not successful\n");
2577                                         i=SSL_read(con,(char *)buf,bufsize);
2578                                         }
2579 #endif
2580                                 switch (SSL_get_error(con,i))
2581                                         {
2582                                 case SSL_ERROR_NONE:
2583 #ifdef CHARSET_EBCDIC
2584                                         ascii2ebcdic(buf,buf,i);
2585 #endif
2586                                         raw_write_stdout(buf,
2587                                                 (unsigned int)i);
2588                                         if (SSL_pending(con)) goto again;
2589                                         break;
2590                                 case SSL_ERROR_WANT_WRITE:
2591                                 case SSL_ERROR_WANT_READ:
2592                                         BIO_printf(bio_s_out,"Read BLOCK\n");
2593                                         break;
2594                                 case SSL_ERROR_SYSCALL:
2595                                 case SSL_ERROR_SSL:
2596                                         BIO_printf(bio_s_out,"ERROR\n");
2597                                         ERR_print_errors(bio_err);
2598                                         ret=1;
2599                                         goto err;
2600                                 case SSL_ERROR_ZERO_RETURN:
2601                                         BIO_printf(bio_s_out,"DONE\n");
2602                                         ret=1;
2603                                         goto err;
2604                                         }
2605                                 }
2606                         }
2607                 }
2608 err:
2609         if (con != NULL)
2610                 {
2611                 BIO_printf(bio_s_out,"shutting down SSL\n");
2612 #if 1
2613                 SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
2614 #else
2615                 SSL_shutdown(con);
2616 #endif
2617                 SSL_free(con);
2618                 }
2619         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
2620         if (buf != NULL)
2621                 {
2622                 OPENSSL_cleanse(buf,bufsize);
2623                 OPENSSL_free(buf);
2624                 }
2625         if (ret >= 0)
2626                 BIO_printf(bio_s_out,"ACCEPT\n");
2627         return(ret);
2628         }
2629
2630 static void close_accept_socket(void)
2631         {
2632         BIO_printf(bio_err,"shutdown accept socket\n");
2633         if (accept_socket >= 0)
2634                 {
2635                 SHUTDOWN2(accept_socket);
2636                 }
2637         }
2638
2639 static int init_ssl_connection(SSL *con)
2640         {
2641         int i;
2642         const char *str;
2643         X509 *peer;
2644         long verify_error;
2645         MS_STATIC char buf[BUFSIZ];
2646 #ifndef OPENSSL_NO_KRB5
2647         char *client_princ;
2648 #endif
2649 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2650         const unsigned char *next_proto_neg;
2651         unsigned next_proto_neg_len;
2652 #endif
2653         unsigned char *exportedkeymat;
2654
2655
2656         i=SSL_accept(con);
2657 #ifdef CERT_CB_TEST_RETRY
2658         {
2659         while (i <= 0 && SSL_get_error(con,i) == SSL_ERROR_WANT_X509_LOOKUP && SSL_state(con) == SSL3_ST_SR_CLNT_HELLO_C)
2660                 {
2661                 fprintf(stderr, "LOOKUP from certificate callback during accept\n");
2662                 i=SSL_accept(con);
2663                 }
2664         }
2665 #endif
2666 #ifndef OPENSSL_NO_SRP
2667         while (i <= 0 &&  SSL_get_error(con,i) == SSL_ERROR_WANT_X509_LOOKUP)
2668                 {
2669                         BIO_printf(bio_s_out,"LOOKUP during accept %s\n",srp_callback_parm.login);
2670                         srp_callback_parm.user = SRP_VBASE_get_by_user(srp_callback_parm.vb, srp_callback_parm.login);
2671                         if (srp_callback_parm.user)
2672                                 BIO_printf(bio_s_out,"LOOKUP done %s\n",srp_callback_parm.user->info);
2673                         else
2674                                 BIO_printf(bio_s_out,"LOOKUP not successful\n");
2675                         i=SSL_accept(con);
2676                 }
2677 #endif
2678
2679         if (i <= 0)
2680                 {
2681                 if (BIO_sock_should_retry(i))
2682                         {
2683                         BIO_printf(bio_s_out,"DELAY\n");
2684                         return(1);
2685                         }
2686
2687                 BIO_printf(bio_err,"ERROR\n");
2688                 verify_error=SSL_get_verify_result(con);
2689                 if (verify_error != X509_V_OK)
2690                         {
2691                         BIO_printf(bio_err,"verify error:%s\n",
2692                                 X509_verify_cert_error_string(verify_error));
2693                         }
2694                 /* Always print any error messages */
2695                 ERR_print_errors(bio_err);
2696                 return(0);
2697                 }
2698
2699         if (s_brief)
2700                 print_ssl_summary(bio_err, con);
2701
2702         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
2703
2704         peer=SSL_get_peer_certificate(con);
2705         if (peer != NULL)
2706                 {
2707                 BIO_printf(bio_s_out,"Client certificate\n");
2708                 PEM_write_bio_X509(bio_s_out,peer);
2709                 X509_NAME_oneline(X509_get_subject_name(peer),buf,sizeof buf);
2710                 BIO_printf(bio_s_out,"subject=%s\n",buf);
2711                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,sizeof buf);
2712                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
2713                 X509_free(peer);
2714                 }
2715
2716         if (SSL_get_shared_ciphers(con,buf,sizeof buf) != NULL)
2717                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
2718         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
2719         ssl_print_sigalgs(bio_s_out, con);
2720 #ifndef OPENSSL_NO_EC
2721         ssl_print_point_formats(bio_s_out, con);
2722         ssl_print_curves(bio_s_out, con, 0);
2723 #endif
2724         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
2725
2726 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2727         SSL_get0_next_proto_negotiated(con, &next_proto_neg, &next_proto_neg_len);
2728         if (next_proto_neg)
2729                 {
2730                 BIO_printf(bio_s_out,"NEXTPROTO is ");
2731                 BIO_write(bio_s_out, next_proto_neg, next_proto_neg_len);
2732                 BIO_printf(bio_s_out, "\n");
2733                 }
2734 #endif
2735 #ifndef OPENSSL_NO_SRTP
2736         {
2737         SRTP_PROTECTION_PROFILE *srtp_profile
2738           = SSL_get_selected_srtp_profile(con);
2739
2740         if(srtp_profile)
2741                 BIO_printf(bio_s_out,"SRTP Extension negotiated, profile=%s\n",
2742                            srtp_profile->name);
2743         }
2744 #endif
2745         if (SSL_cache_hit(con)) BIO_printf(bio_s_out,"Reused session-id\n");
2746         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
2747                 TLS1_FLAGS_TLS_PADDING_BUG)
2748                 BIO_printf(bio_s_out,
2749                            "Peer has incorrect TLSv1 block padding\n");
2750 #ifndef OPENSSL_NO_KRB5
2751         client_princ = kssl_ctx_get0_client_princ(SSL_get0_kssl_ctx(con));
2752         if (client_princ != NULL)
2753                 {
2754                 BIO_printf(bio_s_out,"Kerberos peer principal is %s\n",
2755                                                                 client_princ);
2756                 }
2757 #endif /* OPENSSL_NO_KRB5 */
2758         BIO_printf(bio_s_out, "Secure Renegotiation IS%s supported\n",
2759                       SSL_get_secure_renegotiation_support(con) ? "" : " NOT");
2760         if (keymatexportlabel != NULL)
2761                 {
2762                 BIO_printf(bio_s_out, "Keying material exporter:\n");
2763                 BIO_printf(bio_s_out, "    Label: '%s'\n", keymatexportlabel);
2764                 BIO_printf(bio_s_out, "    Length: %i bytes\n",
2765                            keymatexportlen);
2766                 exportedkeymat = OPENSSL_malloc(keymatexportlen);
2767                 if (exportedkeymat != NULL)
2768                         {
2769                         if (!SSL_export_keying_material(con, exportedkeymat,
2770                                                         keymatexportlen,
2771                                                         keymatexportlabel,
2772                                                         strlen(keymatexportlabel),
2773                                                         NULL, 0, 0))
2774                                 {
2775                                 BIO_printf(bio_s_out, "    Error\n");
2776                                 }
2777                         else
2778                                 {
2779                                 BIO_printf(bio_s_out, "    Keying material: ");
2780                                 for (i=0; i<keymatexportlen; i++)
2781                                         BIO_printf(bio_s_out, "%02X",
2782                                                    exportedkeymat[i]);
2783                                 BIO_printf(bio_s_out, "\n");
2784                                 }
2785                         OPENSSL_free(exportedkeymat);
2786                         }
2787                 }
2788
2789         return(1);
2790         }
2791
2792 #ifndef OPENSSL_NO_DH
2793 static DH *load_dh_param(const char *dhfile)
2794         {
2795         DH *ret=NULL;
2796         BIO *bio;
2797
2798         if ((bio=BIO_new_file(dhfile,"r")) == NULL)
2799                 goto err;
2800         ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);
2801 err:
2802         if (bio != NULL) BIO_free(bio);
2803         return(ret);
2804         }
2805 #endif
2806
2807 #if 0
2808 static int load_CA(SSL_CTX *ctx, char *file)
2809         {
2810         FILE *in;
2811         X509 *x=NULL;
2812
2813         if ((in=fopen(file,"r")) == NULL)
2814                 return(0);
2815
2816         for (;;)
2817                 {
2818                 if (PEM_read_X509(in,&x,NULL) == NULL)
2819                         break;
2820                 SSL_CTX_add_client_CA(ctx,x);
2821                 }
2822         if (x != NULL) X509_free(x);
2823         fclose(in);
2824         return(1);
2825         }
2826 #endif
2827
2828 static int www_body(char *hostname, int s, int stype, unsigned char *context)
2829         {
2830         char *buf=NULL;
2831         int ret=1;
2832         int i,j,k,dot;
2833         SSL *con;
2834         const SSL_CIPHER *c;
2835         BIO *io,*ssl_bio,*sbio;
2836 #ifndef OPENSSL_NO_KRB5
2837         KSSL_CTX *kctx;
2838 #endif
2839
2840         buf=OPENSSL_malloc(bufsize);
2841         if (buf == NULL) return(0);
2842         io=BIO_new(BIO_f_buffer());
2843         ssl_bio=BIO_new(BIO_f_ssl());
2844         if ((io == NULL) || (ssl_bio == NULL)) goto err;
2845
2846 #ifdef FIONBIO
2847         if (s_nbio)
2848                 {
2849                 unsigned long sl=1;
2850
2851                 if (!s_quiet)
2852                         BIO_printf(bio_err,"turning on non blocking io\n");
2853                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
2854                         ERR_print_errors(bio_err);
2855                 }
2856 #endif
2857
2858         /* lets make the output buffer a reasonable size */
2859         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
2860
2861         if ((con=SSL_new(ctx)) == NULL) goto err;
2862 #ifndef OPENSSL_NO_TLSEXT
2863                 if (s_tlsextdebug)
2864                         {
2865                         SSL_set_tlsext_debug_callback(con, tlsext_cb);
2866                         SSL_set_tlsext_debug_arg(con, bio_s_out);
2867                         }
2868 #endif
2869 #ifndef OPENSSL_NO_KRB5
2870         if ((kctx = kssl_ctx_new()) != NULL)
2871                 {
2872                 kssl_ctx_setstring(kctx, KSSL_SERVICE, KRB5SVC);
2873                 kssl_ctx_setstring(kctx, KSSL_KEYTAB, KRB5KEYTAB);
2874                 }
2875 #endif  /* OPENSSL_NO_KRB5 */
2876         if(context) SSL_set_session_id_context(con, context,
2877                                                strlen((char *)context));
2878
2879         sbio=BIO_new_socket(s,BIO_NOCLOSE);
2880         if (s_nbio_test)
2881                 {
2882                 BIO *test;
2883
2884                 test=BIO_new(BIO_f_nbio_test());
2885                 sbio=BIO_push(test,sbio);
2886                 }
2887         SSL_set_bio(con,sbio,sbio);
2888         SSL_set_accept_state(con);
2889
2890         /* SSL_set_fd(con,s); */
2891         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
2892         BIO_push(io,ssl_bio);
2893 #ifdef CHARSET_EBCDIC
2894         io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);
2895 #endif
2896
2897         if (s_debug)
2898                 {
2899                 SSL_set_debug(con, 1);
2900                 BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
2901                 BIO_set_callback_arg(SSL_get_rbio(con),(char *)bio_s_out);
2902                 }
2903         if (s_msg)
2904                 {
2905 #ifndef OPENSSL_NO_SSL_TRACE
2906                 if (s_msg == 2)
2907                         SSL_set_msg_callback(con, SSL_trace);
2908                 else
2909 #endif
2910                         SSL_set_msg_callback(con, msg_cb);
2911                 SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
2912                 }
2913
2914         for (;;)
2915                 {
2916                 if (hack)
2917                         {
2918                         i=SSL_accept(con);
2919 #ifndef OPENSSL_NO_SRP
2920                         while (i <= 0 &&  SSL_get_error(con,i) == SSL_ERROR_WANT_X509_LOOKUP)
2921                 {
2922                         BIO_printf(bio_s_out,"LOOKUP during accept %s\n",srp_callback_parm.login);
2923                         srp_callback_parm.user = SRP_VBASE_get_by_user(srp_callback_parm.vb, srp_callback_parm.login);
2924                         if (srp_callback_parm.user)
2925                                 BIO_printf(bio_s_out,"LOOKUP done %s\n",srp_callback_parm.user->info);
2926                         else
2927                                 BIO_printf(bio_s_out,"LOOKUP not successful\n");
2928                         i=SSL_accept(con);
2929                 }
2930 #endif
2931                         switch (SSL_get_error(con,i))
2932                                 {
2933                         case SSL_ERROR_NONE:
2934                                 break;
2935                         case SSL_ERROR_WANT_WRITE:
2936                         case SSL_ERROR_WANT_READ:
2937                         case SSL_ERROR_WANT_X509_LOOKUP:
2938                                 continue;
2939                         case SSL_ERROR_SYSCALL:
2940                         case SSL_ERROR_SSL:
2941                         case SSL_ERROR_ZERO_RETURN:
2942                                 ret=1;
2943                                 goto err;
2944                                 /* break; */
2945                                 }
2946
2947                         SSL_renegotiate(con);
2948                         SSL_write(con,NULL,0);
2949                         }
2950
2951                 i=BIO_gets(io,buf,bufsize-1);
2952                 if (i < 0) /* error */
2953                         {
2954                         if (!BIO_should_retry(io))
2955                                 {
2956                                 if (!s_quiet)
2957                                         ERR_print_errors(bio_err);
2958                                 goto err;
2959                                 }
2960                         else
2961                                 {
2962                                 BIO_printf(bio_s_out,"read R BLOCK\n");
2963 #if defined(OPENSSL_SYS_NETWARE)
2964             delay(1000);
2965 #elif !defined(OPENSSL_SYS_MSDOS)
2966                                 sleep(1);
2967 #endif
2968                                 continue;
2969                                 }
2970                         }
2971                 else if (i == 0) /* end of input */
2972                         {
2973                         ret=1;
2974                         goto end;
2975                         }
2976
2977                 /* else we have data */
2978                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
2979                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
2980                         {
2981                         char *p;
2982                         X509 *peer;
2983                         STACK_OF(SSL_CIPHER) *sk;
2984                         static const char *space="                          ";
2985
2986                 if (www == 1 && strncmp("GET /reneg", buf, 10) == 0)
2987                         {
2988                         if (strncmp("GET /renegcert", buf, 14) == 0)
2989                                 SSL_set_verify(con,
2990                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
2991                         i=SSL_renegotiate(con);
2992                         BIO_printf(bio_s_out, "SSL_renegotiate -> %d\n",i);
2993                         i=SSL_do_handshake(con);
2994                         if (i <= 0)
2995                                 {
2996                                 BIO_printf(bio_s_out, "SSL_do_handshake() Retval %d\n", SSL_get_error(con, i));
2997                                 ERR_print_errors(bio_err);
2998                                 goto err;
2999                                 }
3000                         /* EVIL HACK! */
3001                         SSL_set_state(con, SSL_ST_ACCEPT);
3002                         i=SSL_do_handshake(con);
3003                         BIO_printf(bio_s_out, "SSL_do_handshake -> %d\n",i);
3004                         if (i <= 0)
3005                                 {
3006                                 BIO_printf(bio_s_out, "SSL_do_handshake() Retval %d\n", SSL_get_error(con, i));
3007                                 ERR_print_errors(bio_err);
3008                                 goto err;
3009                                 }
3010                         }
3011
3012                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
3013                         BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");
3014                         BIO_puts(io,"<pre>\n");
3015 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
3016                         BIO_puts(io,"\n");
3017                         for (i=0; i<local_argc; i++)
3018                                 {
3019                                 BIO_puts(io,local_argv[i]);
3020                                 BIO_write(io," ",1);
3021                                 }
3022                         BIO_puts(io,"\n");
3023
3024                         BIO_printf(io,
3025                                 "Secure Renegotiation IS%s supported\n",
3026                                 SSL_get_secure_renegotiation_support(con) ?
3027                                                         "" : " NOT");
3028
3029                         /* The following is evil and should not really
3030                          * be done */
3031                         BIO_printf(io,"Ciphers supported in s_server binary\n");
3032                         sk=SSL_get_ciphers(con);
3033                         j=sk_SSL_CIPHER_num(sk);
3034                         for (i=0; i<j; i++)
3035                                 {
3036                                 c=sk_SSL_CIPHER_value(sk,i);
3037                                 BIO_printf(io,"%-11s:%-25s",
3038                                         SSL_CIPHER_get_version(c),
3039                                         SSL_CIPHER_get_name(c));
3040                                 if ((((i+1)%2) == 0) && (i+1 != j))
3041                                         BIO_puts(io,"\n");
3042                                 }
3043                         BIO_puts(io,"\n");
3044                         p=SSL_get_shared_ciphers(con,buf,bufsize);
3045                         if (p != NULL)
3046                                 {
3047                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
3048                                 j=i=0;
3049                                 while (*p)
3050                                         {
3051                                         if (*p == ':')
3052                                                 {
3053                                                 BIO_write(io,space,26-j);
3054                                                 i++;
3055                                                 j=0;
3056                                                 BIO_write(io,((i%3)?" ":"\n"),1);
3057                                                 }
3058                                         else
3059                                                 {
3060                                                 BIO_write(io,p,1);
3061                                                 j++;
3062                                                 }
3063                                         p++;
3064                                         }
3065                                 BIO_puts(io,"\n");
3066                                 }
3067                         ssl_print_sigalgs(io, con);
3068 #ifndef OPENSSL_NO_EC
3069                         ssl_print_curves(io, con, 0);
3070 #endif
3071                         BIO_printf(io,(SSL_cache_hit(con)
3072                                 ?"---\nReused, "
3073                                 :"---\nNew, "));
3074                         c=SSL_get_current_cipher(con);
3075                         BIO_printf(io,"%s, Cipher is %s\n",
3076                                 SSL_CIPHER_get_version(c),
3077                                 SSL_CIPHER_get_name(c));
3078                         SSL_SESSION_print(io,SSL_get_session(con));
3079                         BIO_printf(io,"---\n");
3080                         print_stats(io,SSL_get_SSL_CTX(con));
3081                         BIO_printf(io,"---\n");
3082                         peer=SSL_get_peer_certificate(con);
3083                         if (peer != NULL)
3084                                 {
3085                                 BIO_printf(io,"Client certificate\n");
3086                                 X509_print(io,peer);
3087                                 PEM_write_bio_X509(io,peer);
3088                                 }
3089                         else
3090                                 BIO_puts(io,"no client certificate available\n");
3091                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
3092                         break;
3093                         }
3094                 else if ((www == 2 || www == 3)
3095                          && (strncmp("GET /",buf,5) == 0))
3096                         {
3097                         BIO *file;
3098                         char *p,*e;
3099                         static const char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
3100
3101                         /* skip the '/' */
3102                         p= &(buf[5]);
3103
3104                         dot = 1;
3105                         for (e=p; *e != '\0'; e++)
3106                                 {
3107                                 if (e[0] == ' ')
3108                                         break;
3109
3110                                 switch (dot)
3111                                         {
3112                                 case 1:
3113                                         dot = (e[0] == '.') ? 2 : 0;
3114                                         break;
3115                                 case 2:
3116                                         dot = (e[0] == '.') ? 3 : 0;
3117                                         break;
3118                                 case 3:
3119                                         dot = (e[0] == '/') ? -1 : 0;
3120                                         break;
3121                                         }
3122                                 if (dot == 0)
3123                                         dot = (e[0] == '/') ? 1 : 0;
3124                                 }
3125                         dot = (dot == 3) || (dot == -1); /* filename contains ".." component */
3126
3127                         if (*e == '\0')
3128                                 {
3129                                 BIO_puts(io,text);
3130                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
3131                                 break;
3132                                 }
3133                         *e='\0';
3134
3135                         if (dot)
3136                                 {
3137                                 BIO_puts(io,text);
3138                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
3139                                 break;
3140                                 }
3141
3142                         if (*p == '/')
3143                                 {
3144                                 BIO_puts(io,text);
3145                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
3146                                 break;
3147                                 }
3148
3149 #if 0
3150                         /* append if a directory lookup */
3151                         if (e[-1] == '/')
3152                                 strcat(p,"index.html");
3153 #endif
3154
3155                         /* if a directory, do the index thang */
3156                         if (app_isdir(p)>0)
3157                                 {
3158 #if 0 /* must check buffer size */
3159                                 strcat(p,"/index.html");
3160 #else
3161                                 BIO_puts(io,text);
3162                                 BIO_printf(io,"'%s' is a directory\r\n",p);
3163                                 break;
3164 #endif
3165                                 }
3166
3167                         if ((file=BIO_new_file(p,"r")) == NULL)
3168                                 {
3169                                 BIO_puts(io,text);
3170                                 BIO_printf(io,"Error opening '%s'\r\n",p);
3171                                 ERR_print_errors(io);
3172                                 break;
3173                                 }
3174
3175                         if (!s_quiet)
3176                                 BIO_printf(bio_err,"FILE:%s\n",p);
3177
3178                         if (www == 2)
3179                                 {
3180                                 i=strlen(p);
3181                                 if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
3182                                         ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
3183                                         ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
3184                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
3185                                 else
3186                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
3187                                 }
3188                         /* send the file */
3189                         for (;;)
3190                                 {
3191                                 i=BIO_read(file,buf,bufsize);
3192                                 if (i <= 0) break;
3193
3194 #ifdef RENEG
3195                                 total_bytes+=i;
3196                                 fprintf(stderr,"%d\n",i);
3197                                 if (total_bytes > 3*1024)
3198                                         {
3199                                         total_bytes=0;
3200                                         fprintf(stderr,"RENEGOTIATE\n");
3201                                         SSL_renegotiate(con);
3202                                         }
3203 #endif
3204
3205                                 for (j=0; j<i; )
3206                                         {
3207 #ifdef RENEG
3208 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
3209 #endif
3210                                         k=BIO_write(io,&(buf[j]),i-j);
3211                                         if (k <= 0)
3212                                                 {
3213                                                 if (!BIO_should_retry(io))
3214                                                         goto write_error;
3215                                                 else
3216                                                         {
3217                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
3218                                                         }
3219                                                 }
3220                                         else
3221                                                 {
3222                                                 j+=k;
3223                                                 }
3224                                         }
3225                                 }
3226 write_error:
3227                         BIO_free(file);
3228                         break;
3229                         }
3230                 }
3231
3232         for (;;)
3233                 {
3234                 i=(int)BIO_flush(io);
3235                 if (i <= 0)
3236                         {
3237                         if (!BIO_should_retry(io))
3238                                 break;
3239                         }
3240                 else
3241                         break;
3242                 }
3243 end:
3244 #if 1
3245         /* make sure we re-use sessions */
3246         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
3247 #else
3248         /* This kills performance */
3249 /*      SSL_shutdown(con); A shutdown gets sent in the
3250  *      BIO_free_all(io) procession */
3251 #endif
3252
3253 err:
3254
3255         if (ret >= 0)
3256                 BIO_printf(bio_s_out,"ACCEPT\n");
3257
3258         if (buf != NULL) OPENSSL_free(buf);
3259         if (io != NULL) BIO_free_all(io);
3260 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
3261         return(ret);
3262         }
3263
3264 static int rev_body(char *hostname, int s, int stype, unsigned char *context)
3265         {
3266         char *buf=NULL;
3267         int i;
3268         int ret=1;
3269         SSL *con;
3270         BIO *io,*ssl_bio,*sbio;
3271 #ifndef OPENSSL_NO_KRB5
3272         KSSL_CTX *kctx;
3273 #endif
3274
3275         buf=OPENSSL_malloc(bufsize);
3276         if (buf == NULL) return(0);
3277         io=BIO_new(BIO_f_buffer());
3278         ssl_bio=BIO_new(BIO_f_ssl());
3279         if ((io == NULL) || (ssl_bio == NULL)) goto err;
3280
3281         /* lets make the output buffer a reasonable size */
3282         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
3283
3284         if ((con=SSL_new(ctx)) == NULL) goto err;
3285 #ifndef OPENSSL_NO_TLSEXT
3286         if (s_tlsextdebug)
3287                 {
3288                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
3289                 SSL_set_tlsext_debug_arg(con, bio_s_out);
3290                 }
3291 #endif
3292 #ifndef OPENSSL_NO_KRB5
3293         if ((kctx = kssl_ctx_new()) != NULL)
3294                 {
3295                 kssl_ctx_setstring(kctx, KSSL_SERVICE, KRB5SVC);
3296                 kssl_ctx_setstring(kctx, KSSL_KEYTAB, KRB5KEYTAB);
3297                 }
3298 #endif  /* OPENSSL_NO_KRB5 */
3299         if(context) SSL_set_session_id_context(con, context,
3300                                                strlen((char *)context));
3301
3302         sbio=BIO_new_socket(s,BIO_NOCLOSE);
3303         SSL_set_bio(con,sbio,sbio);
3304         SSL_set_accept_state(con);
3305
3306         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
3307         BIO_push(io,ssl_bio);
3308 #ifdef CHARSET_EBCDIC
3309         io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);
3310 #endif
3311
3312         if (s_debug)
3313                 {
3314                 SSL_set_debug(con, 1);
3315                 BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
3316                 BIO_set_callback_arg(SSL_get_rbio(con),(char *)bio_s_out);
3317                 }
3318         if (s_msg)
3319                 {
3320 #ifndef OPENSSL_NO_SSL_TRACE
3321                 if (s_msg == 2)
3322                         SSL_set_msg_callback(con, SSL_trace);
3323                 else
3324 #endif
3325                         SSL_set_msg_callback(con, msg_cb);
3326                 SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
3327                 }
3328
3329         for (;;)
3330                 {
3331                 i = BIO_do_handshake(io);
3332                 if (i > 0)
3333                         break;
3334                 if (!BIO_should_retry(io))
3335                         {
3336                         BIO_puts(bio_err, "CONNECTION FAILURE\n");
3337                         ERR_print_errors(bio_err);
3338                         goto end;
3339                         }
3340                 }
3341         BIO_printf(bio_err, "CONNECTION ESTABLISHED\n");
3342         print_ssl_summary(bio_err, con);
3343
3344         for (;;)
3345                 {
3346                 i=BIO_gets(io,buf,bufsize-1);
3347                 if (i < 0) /* error */
3348                         {
3349                         if (!BIO_should_retry(io))
3350                                 {
3351                                 if (!s_quiet)
3352                                         ERR_print_errors(bio_err);
3353                                 goto err;
3354                                 }
3355                         else
3356                                 {
3357                                 BIO_printf(bio_s_out,"read R BLOCK\n");
3358 #if defined(OPENSSL_SYS_NETWARE)
3359             delay(1000);
3360 #elif !defined(OPENSSL_SYS_MSDOS)
3361                                 sleep(1);
3362 #endif
3363                                 continue;
3364                                 }
3365                         }
3366                 else if (i == 0) /* end of input */
3367                         {
3368                         ret=1;
3369                         BIO_printf(bio_err, "CONNECTION CLOSED\n");
3370                         goto end;
3371                         }
3372                 else
3373                         {
3374                         char *p = buf + i - 1;
3375                         while(i && (*p == '\n' || *p == '\r'))
3376                                 {
3377                                 p--;
3378                                 i--;
3379                                 }
3380                         if (!s_ign_eof && i == 5 && !strncmp(buf, "CLOSE", 5))
3381                                 {
3382                                 ret = 1;
3383                                 BIO_printf(bio_err, "CONNECTION CLOSED\n");
3384                                 goto end;
3385                                 }
3386                         BUF_reverse((unsigned char *)buf, NULL, i);
3387                         buf[i] = '\n';
3388                         BIO_write(io, buf, i + 1);
3389                         for (;;)
3390                                 {
3391                                 i = BIO_flush(io);
3392                                 if (i > 0)
3393                                         break;
3394                                 if (!BIO_should_retry(io))
3395                                         goto end;
3396                                 }
3397                         }
3398                 }
3399 end:
3400         /* make sure we re-use sessions */
3401         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
3402
3403 err:
3404
3405         if (buf != NULL) OPENSSL_free(buf);
3406         if (io != NULL) BIO_free_all(io);
3407         return(ret);
3408         }
3409
3410 #ifndef OPENSSL_NO_RSA
3411 static RSA *tmp_rsa_cb(SSL *s, int is_export, int keylength)
3412         {
3413         BIGNUM *bn = NULL;
3414         static RSA *rsa_tmp=NULL;
3415
3416         if (!rsa_tmp && ((bn = BN_new()) == NULL))
3417                 BIO_printf(bio_err,"Allocation error in generating RSA key\n");
3418         if (!rsa_tmp && bn)
3419                 {
3420                 if (!s_quiet)
3421                         {
3422                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
3423                         (void)BIO_flush(bio_err);
3424                         }
3425                 if(!BN_set_word(bn, RSA_F4) || ((rsa_tmp = RSA_new()) == NULL) ||
3426                                 !RSA_generate_key_ex(rsa_tmp, keylength, bn, NULL))
3427                         {
3428                         if(rsa_tmp) RSA_free(rsa_tmp);
3429                         rsa_tmp = NULL;
3430                         }
3431                 if (!s_quiet)
3432                         {
3433                         BIO_printf(bio_err,"\n");
3434                         (void)BIO_flush(bio_err);
3435                         }
3436                 BN_free(bn);
3437                 }
3438         return(rsa_tmp);
3439         }
3440 #endif
3441
3442 #define MAX_SESSION_ID_ATTEMPTS 10
3443 static int generate_session_id(const SSL *ssl, unsigned char *id,
3444                                 unsigned int *id_len)
3445         {
3446         unsigned int count = 0;
3447         do      {
3448                 RAND_pseudo_bytes(id, *id_len);
3449                 /* Prefix the session_id with the required prefix. NB: If our
3450                  * prefix is too long, clip it - but there will be worse effects
3451                  * anyway, eg. the server could only possibly create 1 session
3452                  * ID (ie. the prefix!) so all future session negotiations will
3453                  * fail due to conflicts. */
3454                 memcpy(id, session_id_prefix,
3455                         (strlen(session_id_prefix) < *id_len) ?
3456                         strlen(session_id_prefix) : *id_len);
3457                 }
3458         while(SSL_has_matching_session_id(ssl, id, *id_len) &&
3459                 (++count < MAX_SESSION_ID_ATTEMPTS));
3460         if(count >= MAX_SESSION_ID_ATTEMPTS)
3461                 return 0;
3462         return 1;
3463         }
3464
3465 /* By default s_server uses an in-memory cache which caches SSL_SESSION
3466  * structures without any serialisation. This hides some bugs which only
3467  * become apparent in deployed servers. By implementing a basic external
3468  * session cache some issues can be debugged using s_server.
3469  */
3470
3471 typedef struct simple_ssl_session_st
3472         {
3473         unsigned char *id;
3474         unsigned int idlen;
3475         unsigned char *der;
3476         int derlen;
3477         struct simple_ssl_session_st *next;
3478         } simple_ssl_session;
3479
3480 static simple_ssl_session *first = NULL;
3481
3482 static int add_session(SSL *ssl, SSL_SESSION *session)
3483         {
3484         simple_ssl_session *sess;
3485         unsigned char *p;
3486
3487         sess = OPENSSL_malloc(sizeof(simple_ssl_session));
3488
3489         SSL_SESSION_get_id(session, &sess->idlen);
3490         sess->derlen = i2d_SSL_SESSION(session, NULL);
3491
3492         sess->id = BUF_memdup(SSL_SESSION_get_id(session, NULL), sess->idlen);
3493
3494         sess->der = OPENSSL_malloc(sess->derlen);
3495         p = sess->der;
3496         i2d_SSL_SESSION(session, &p);
3497
3498         sess->next = first;
3499         first = sess;
3500         BIO_printf(bio_err, "New session added to external cache\n");
3501         return 0;
3502         }
3503
3504 static SSL_SESSION *get_session(SSL *ssl, unsigned char *id, int idlen,
3505                                         int *do_copy)
3506         {
3507         simple_ssl_session *sess;
3508         *do_copy = 0;
3509         for (sess = first; sess; sess = sess->next)
3510                 {
3511                 if (idlen == (int)sess->idlen && !memcmp(sess->id, id, idlen))
3512                         {
3513                         const unsigned char *p = sess->der;
3514                         BIO_printf(bio_err, "Lookup session: cache hit\n");
3515                         return d2i_SSL_SESSION(NULL, &p, sess->derlen);
3516                         }
3517                 }
3518         BIO_printf(bio_err, "Lookup session: cache miss\n");
3519         return NULL;
3520         }
3521
3522 static void del_session(SSL_CTX *sctx, SSL_SESSION *session)
3523         {
3524         simple_ssl_session *sess, *prev = NULL;
3525         const unsigned char *id;
3526         unsigned int idlen;
3527         id = SSL_SESSION_get_id(session, &idlen);
3528         for (sess = first; sess; sess = sess->next)
3529                 {
3530                 if (idlen == sess->idlen && !memcmp(sess->id, id, idlen))
3531                         {
3532                         if(prev)
3533                                 prev->next = sess->next;
3534                         else
3535                                 first = sess->next;
3536                         OPENSSL_free(sess->id);
3537                         OPENSSL_free(sess->der);
3538                         OPENSSL_free(sess);
3539                         return;
3540                         }
3541                 prev = sess;
3542                 }
3543         }
3544
3545 static void init_session_cache_ctx(SSL_CTX *sctx)
3546         {
3547         SSL_CTX_set_session_cache_mode(sctx,
3548                         SSL_SESS_CACHE_NO_INTERNAL|SSL_SESS_CACHE_SERVER);
3549         SSL_CTX_sess_set_new_cb(sctx, add_session);
3550         SSL_CTX_sess_set_get_cb(sctx, get_session);
3551         SSL_CTX_sess_set_remove_cb(sctx, del_session);
3552         }
3553
3554 static void free_sessions(void)
3555         {
3556         simple_ssl_session *sess, *tsess;
3557         for (sess = first; sess;)
3558                 {
3559                 OPENSSL_free(sess->id);
3560                 OPENSSL_free(sess->der);
3561                 tsess = sess;
3562                 sess = sess->next;
3563                 OPENSSL_free(tsess);
3564                 }
3565         first = NULL;
3566         }