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 /* Until the key-gen callbacks are modified to use newer prototypes, we allow
 144  * deprecated functions for openssl-internal code */
 145 #ifdef OPENSSL_NO_DEPRECATED
 146 #undef OPENSSL_NO_DEPRECATED
 147 #endif
 148
 149 #include <assert.h>
 150 #include <ctype.h>
 151 #include <stdio.h>
 152 #include <stdlib.h>
 153 #include <string.h>
 154
 155 #include <openssl/e_os2.h>
 156 #ifdef OPENSSL_NO_STDIO
 157 #define APPS_WIN16
 158 #endif
 159
 160 #if !defined(OPENSSL_SYS_NETWARE)  /* conflicts with winsock2 stuff on netware */
 161 #include <sys/types.h>
 162 #endif
 163
 164 /* With IPv6, it looks like Digital has mixed up the proper order of
 165    recursive header file inclusion, resulting in the compiler complaining
 166    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
 167    is needed to have fileno() declared correctly...  So let's define u_int */
 168 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
 169 #define __U_INT
 170 typedef unsigned int u_int;
 171 #endif
 172
 173 #include <openssl/lhash.h>
 174 #include <openssl/bn.h>
 175 #define USE_SOCKETS
 176 #include "apps.h"
 177 #include <openssl/err.h>
 178 #include <openssl/pem.h>
 179 #include <openssl/x509.h>
 180 #include <openssl/ssl.h>
 181 #include <openssl/rand.h>
 182 #ifndef OPENSSL_NO_DH
 183 #include <openssl/dh.h>
 184 #endif
 185 #ifndef OPENSSL_NO_RSA
 186 #include <openssl/rsa.h>
 187 #endif
 188 #include "s_apps.h"
 189 #include "timeouts.h"
 190
 191 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
 192 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
 193 #undef FIONBIO
 194 #endif
 195
 196 #if defined(OPENSSL_SYS_BEOS_R5)
 197 #include <fcntl.h>
 198 #endif
 199
 200 #ifndef OPENSSL_NO_RSA
 201 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
 202 #endif
 203 static int sv_body(char *hostname, int s, unsigned char *context);
 204 static int www_body(char *hostname, int s, unsigned char *context);
 205 static void close_accept_socket(void );
 206 static void sv_usage(void);
 207 static int init_ssl_connection(SSL *s);
 208 static void print_stats(BIO *bp,SSL_CTX *ctx);
 209 static int generate_session_id(const SSL *ssl, unsigned char *id,
 210                                 unsigned int *id_len);
 211 #ifndef OPENSSL_NO_DH
 212 static DH *load_dh_param(const char *dhfile);
 213 static DH *get_dh512(void);
 214 #endif
 215
 216 #ifdef MONOLITH
 217 static void s_server_init(void);
 218 #endif
 219
 220 #ifndef OPENSSL_NO_DH
 221 static unsigned char dh512_p[]={
 222         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
 223         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
 224         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
 225         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
 226         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
 227         0x47,0x74,0xE8,0x33,
 228         };
 229 static unsigned char dh512_g[]={
 230         0x02,
 231         };
 232
 233 static DH *get_dh512(void)
 234         {
 235         DH *dh=NULL;
 236
 237         if ((dh=DH_new()) == NULL) return(NULL);
 238         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
 239         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
 240         if ((dh->p == NULL) || (dh->g == NULL))
 241                 return(NULL);
 242         return(dh);
 243         }
 244 #endif
 245
 246
 247 /* static int load_CA(SSL_CTX *ctx, char *file);*/
 248
 249 #undef BUFSIZZ
 250 #define BUFSIZZ 16*1024
 251 static int bufsize=BUFSIZZ;
 252 static int accept_socket= -1;
 253
 254 #define TEST_CERT       "server.pem"
 255 #ifndef OPENSSL_NO_TLSEXT
 256 #define TEST_CERT2      "server2.pem"
 257 #endif
 258 #undef PROG
 259 #define PROG            s_server_main
 260
 261 extern int verify_depth, verify_return_error;
 262
 263 static char *cipher=NULL;
 264 static int s_server_verify=SSL_VERIFY_NONE;
 265 static int s_server_session_id_context = 1; /* anything will do */
 266 static const char *s_cert_file=TEST_CERT,*s_key_file=NULL;
 267 #ifndef OPENSSL_NO_TLSEXT
 268 static const char *s_cert_file2=TEST_CERT2,*s_key_file2=NULL;
 269 #endif
 270 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
 271 #ifdef FIONBIO
 272 static int s_nbio=0;
 273 #endif
 274 static int s_nbio_test=0;
 275 int s_crlf=0;
 276 static SSL_CTX *ctx=NULL;
 277 #ifndef OPENSSL_NO_TLSEXT
 278 static SSL_CTX *ctx2=NULL;
 279 #endif
 280 static int www=0;
 281
 282 static BIO *bio_s_out=NULL;
 283 static int s_debug=0;
 284 static int s_msg=0;
 285 static int s_quiet=0;
 286
 287 static int hack=0;
 288 #ifndef OPENSSL_NO_ENGINE
 289 static char *engine_id=NULL;
 290 #endif
 291 static const char *session_id_prefix=NULL;
 292
 293 static int enable_timeouts = 0;
 294 static long socket_mtu;
 295 static int cert_chain = 0;
 296
 297 #ifndef OPENSSL_NO_PSK
 298 static char *psk_identity="Client_identity";
 299 static char *psk_key=NULL; /* by default PSK is not used */
 300
 301 static unsigned int psk_server_cb(SSL *ssl, const char *identity,
 302         unsigned char *psk, unsigned int max_psk_len)
 303         {
 304         unsigned int psk_len = 0;
 305         int ret;
 306         BIGNUM *bn = NULL;
 307
 308         if (s_debug)
 309                 BIO_printf(bio_s_out,"psk_server_cb\n");
 310         if (!identity)
 311                 {
 312                 BIO_printf(bio_err,"Error: client did not send PSK identity\n");
 313                 goto out_err;
 314                 }
 315         if (s_debug)
 316                 BIO_printf(bio_s_out,"identity_len=%d identity=%s\n",
 317                         identity ? strlen(identity) : 0, identity);
 318
 319         /* here we could lookup the given identity e.g. from a database */
 320         if (strcmp(identity, psk_identity) != 0)
 321                 {
 322                 BIO_printf(bio_s_out, "PSK error: client identity not found\n");
 323                 goto out_err;
 324                 }
 325         if (s_debug)
 326                 BIO_printf(bio_s_out, "PSK client identity found\n");
 327
 328         /* convert the PSK key to binary */
 329         ret = BN_hex2bn(&bn, psk_key);
 330         if (!ret)
 331                 {
 332                 BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
 333                 if (bn)
 334                         BN_free(bn);
 335                 return 0;
 336                 }
 337         if (BN_num_bytes(bn) > (int)max_psk_len)
 338                 {
 339                 BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
 340                         max_psk_len, BN_num_bytes(bn));
 341                 BN_free(bn);
 342                 return 0;
 343                 }
 344
 345         ret = BN_bn2bin(bn, psk);
 346         BN_free(bn);
 347
 348         if (ret < 0)
 349                 goto out_err;
 350         psk_len = (unsigned int)ret;
 351
 352         if (s_debug)
 353                 BIO_printf(bio_s_out, "fetched PSK len=%d\n", psk_len);
 354         return psk_len;
 355  out_err:
 356         if (s_debug)
 357                 BIO_printf(bio_err, "Error in PSK server callback\n");
 358         return 0;
 359         }
 360 #endif
 361
 362 #ifdef MONOLITH
 363 static void s_server_init(void)
 364         {
 365         accept_socket=-1;
 366         cipher=NULL;
 367         s_server_verify=SSL_VERIFY_NONE;
 368         s_dcert_file=NULL;
 369         s_dkey_file=NULL;
 370         s_cert_file=TEST_CERT;
 371         s_key_file=NULL;
 372 #ifndef OPENSSL_NO_TLSEXT
 373         s_cert_file2=TEST_CERT2;
 374         s_key_file2=NULL;
 375         ctx2=NULL;
 376 #endif
 377 #ifdef FIONBIO
 378         s_nbio=0;
 379 #endif
 380         s_nbio_test=0;
 381         ctx=NULL;
 382         www=0;
 383
 384         bio_s_out=NULL;
 385         s_debug=0;
 386         s_msg=0;
 387         s_quiet=0;
 388         hack=0;
 389 #ifndef OPENSSL_NO_ENGINE
 390         engine_id=NULL;
 391 #endif
 392         }
 393 #endif
 394
 395 static void sv_usage(void)
 396         {
 397         BIO_printf(bio_err,"usage: s_server [args ...]\n");
 398         BIO_printf(bio_err,"\n");
 399         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
 400         BIO_printf(bio_err," -context arg  - set session ID context\n");
 401         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 402         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
 403         BIO_printf(bio_err," -cert arg     - certificate file to use\n");
 404         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
 405         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
 406         BIO_printf(bio_err," -key arg      - Private Key file to use, in cert file if\n");
 407         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
 408         BIO_printf(bio_err," -keyform arg  - key format (PEM, DER or ENGINE) PEM default\n");
 409         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
 410         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
 411         BIO_printf(bio_err," -dcertform x  - second certificate format (PEM or DER) PEM default\n");
 412         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
 413         BIO_printf(bio_err," -dkeyform arg - second key format (PEM, DER or ENGINE) PEM default\n");
 414         BIO_printf(bio_err," -dpass arg    - second private key file pass phrase source\n");
 415         BIO_printf(bio_err," -dhparam arg  - DH parameter file to use, in cert file if not specified\n");
 416         BIO_printf(bio_err,"                 or a default set of parameters is used\n");
 417 #ifndef OPENSSL_NO_ECDH
 418         BIO_printf(bio_err," -named_curve arg  - Elliptic curve name to use for ephemeral ECDH keys.\n" \
 419                            "                 Use \"openssl ecparam -list_curves\" for all names\n" \
 420                            "                 (default is nistp256).\n");
 421 #endif
 422 #ifdef FIONBIO
 423         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 424 #endif
 425         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
 426         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 427         BIO_printf(bio_err," -debug        - Print more output\n");
 428         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 429         BIO_printf(bio_err," -state        - Print the SSL states\n");
 430         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 431         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 432         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
 433         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
 434         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences\n");
 435         BIO_printf(bio_err," -quiet        - No server output\n");
 436         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
 437 #ifndef OPENSSL_NO_PSK
 438         BIO_printf(bio_err," -psk_hint arg - PSK identity hint to use\n");
 439         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
 440 #endif
 441         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
 442         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
 443         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
 444         BIO_printf(bio_err," -dtls1        - Just talk DTLSv1\n");
 445         BIO_printf(bio_err," -timeout      - Enable timeouts\n");
 446         BIO_printf(bio_err," -mtu          - Set MTU\n");
 447         BIO_printf(bio_err," -chain        - Read a certificate chain\n");
 448         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
 449         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
 450         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
 451 #ifndef OPENSSL_NO_DH
 452         BIO_printf(bio_err," -no_dhe       - Disable ephemeral DH\n");
 453 #endif
 454 #ifndef OPENSSL_NO_ECDH
 455         BIO_printf(bio_err," -no_ecdhe     - Disable ephemeral ECDH\n");
 456 #endif
 457         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");
 458         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
 459         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
 460         BIO_printf(bio_err," -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
 461         BIO_printf(bio_err,"                 with the assumption it contains a complete HTTP response.\n");
 462 #ifndef OPENSSL_NO_ENGINE
 463         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 464 #endif
 465         BIO_printf(bio_err," -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");
 466         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 467 #ifndef OPENSSL_NO_TLSEXT
 468         BIO_printf(bio_err," -servername host - servername for HostName TLS extension\n");
 469         BIO_printf(bio_err," -servername_fatal - on mismatch send fatal alert (default warning alert)\n");
 470         BIO_printf(bio_err," -cert2 arg    - certificate file to use for servername\n");
 471         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT2);
 472         BIO_printf(bio_err," -key2 arg     - Private Key file to use for servername, in cert file if\n");
 473         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT2);
 474 #endif
 475         }
 476
 477 static int local_argc=0;
 478 static char **local_argv;
 479
 480 #ifdef CHARSET_EBCDIC
 481 static int ebcdic_new(BIO *bi);
 482 static int ebcdic_free(BIO *a);
 483 static int ebcdic_read(BIO *b, char *out, int outl);
 484 static int ebcdic_write(BIO *b, const char *in, int inl);
 485 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr);
 486 static int ebcdic_gets(BIO *bp, char *buf, int size);
 487 static int ebcdic_puts(BIO *bp, const char *str);
 488
 489 #define BIO_TYPE_EBCDIC_FILTER  (18|0x0200)
 490 static BIO_METHOD methods_ebcdic=
 491         {
 492         BIO_TYPE_EBCDIC_FILTER,
 493         "EBCDIC/ASCII filter",
 494         ebcdic_write,
 495         ebcdic_read,
 496         ebcdic_puts,
 497         ebcdic_gets,
 498         ebcdic_ctrl,
 499         ebcdic_new,
 500         ebcdic_free,
 501         };
 502
 503 typedef struct
 504 {
 505         size_t  alloced;
 506         char    buff[1];
 507 } EBCDIC_OUTBUFF;
 508
 509 BIO_METHOD *BIO_f_ebcdic_filter()
 510 {
 511         return(&methods_ebcdic);
 512 }
 513
 514 static int ebcdic_new(BIO *bi)
 515 {
 516         EBCDIC_OUTBUFF *wbuf;
 517
 518         wbuf = (EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);
 519         wbuf->alloced = 1024;
 520         wbuf->buff[0] = '\0';
 521
 522         bi->ptr=(char *)wbuf;
 523         bi->init=1;
 524         bi->flags=0;
 525         return(1);
 526 }
 527
 528 static int ebcdic_free(BIO *a)
 529 {
 530         if (a == NULL) return(0);
 531         if (a->ptr != NULL)
 532                 OPENSSL_free(a->ptr);
 533         a->ptr=NULL;
 534         a->init=0;
 535         a->flags=0;
 536         return(1);
 537 }
 538
 539 static int ebcdic_read(BIO *b, char *out, int outl)
 540 {
 541         int ret=0;
 542
 543         if (out == NULL || outl == 0) return(0);
 544         if (b->next_bio == NULL) return(0);
 545
 546         ret=BIO_read(b->next_bio,out,outl);
 547         if (ret > 0)
 548                 ascii2ebcdic(out,out,ret);
 549         return(ret);
 550 }
 551
 552 static int ebcdic_write(BIO *b, const char *in, int inl)
 553 {
 554         EBCDIC_OUTBUFF *wbuf;
 555         int ret=0;
 556         int num;
 557         unsigned char n;
 558
 559         if ((in == NULL) || (inl <= 0)) return(0);
 560         if (b->next_bio == NULL) return(0);
 561
 562         wbuf=(EBCDIC_OUTBUFF *)b->ptr;
 563
 564         if (inl > (num = wbuf->alloced))
 565         {
 566                 num = num + num;  /* double the size */
 567                 if (num < inl)
 568                         num = inl;
 569                 OPENSSL_free(wbuf);
 570                 wbuf=(EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);
 571
 572                 wbuf->alloced = num;
 573                 wbuf->buff[0] = '\0';
 574
 575                 b->ptr=(char *)wbuf;
 576         }
 577
 578         ebcdic2ascii(wbuf->buff, in, inl);
 579
 580         ret=BIO_write(b->next_bio, wbuf->buff, inl);
 581
 582         return(ret);
 583 }
 584
 585 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr)
 586 {
 587         long ret;
 588
 589         if (b->next_bio == NULL) return(0);
 590         switch (cmd)
 591         {
 592         case BIO_CTRL_DUP:
 593                 ret=0L;
 594                 break;
 595         default:
 596                 ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
 597                 break;
 598         }
 599         return(ret);
 600 }
 601
 602 static int ebcdic_gets(BIO *bp, char *buf, int size)
 603 {
 604         int i, ret=0;
 605         if (bp->next_bio == NULL) return(0);
 606 /*      return(BIO_gets(bp->next_bio,buf,size));*/
 607         for (i=0; i<size-1; ++i)
 608         {
 609                 ret = ebcdic_read(bp,&buf[i],1);
 610                 if (ret <= 0)
 611                         break;
 612                 else if (buf[i] == '\n')
 613                 {
 614                         ++i;
 615                         break;
 616                 }
 617         }
 618         if (i < size)
 619                 buf[i] = '\0';
 620         return (ret < 0 && i == 0) ? ret : i;
 621 }
 622
 623 static int ebcdic_puts(BIO *bp, const char *str)
 624 {
 625         if (bp->next_bio == NULL) return(0);
 626         return ebcdic_write(bp, str, strlen(str));
 627 }
 628 #endif
 629
 630 #ifndef OPENSSL_NO_TLSEXT
 631
 632 /* This is a context that we pass to callbacks */
 633 typedef struct tlsextctx_st {
 634    char * servername;
 635    BIO * biodebug;
 636    int extension_error;
 637 } tlsextctx;
 638
 639
 640 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
 641         {
 642         tlsextctx * p = (tlsextctx *) arg;
 643         const char * servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
 644         if (servername && p->biodebug)
 645                 BIO_printf(p->biodebug,"Hostname in TLS extension: \"%s\"\n",servername);
 646
 647         if (!p->servername)
 648                 return SSL_TLSEXT_ERR_NOACK;
 649
 650         if (servername)
 651                 {
 652                 if (strcmp(servername,p->servername))
 653                         return p->extension_error;
 654                 if (ctx2)
 655                         {
 656                         BIO_printf(p->biodebug,"Swiching server context.\n");
 657                         SSL_set_SSL_CTX(s,ctx2);
 658                         }
 659                 }
 660         return SSL_TLSEXT_ERR_OK;
 661 }
 662 #endif
 663
 664 int MAIN(int, char **);
 665
 666 int MAIN(int argc, char *argv[])
 667         {
 668         X509_STORE *store = NULL;
 669         int vflags = 0;
 670         short port=PORT;
 671         char *CApath=NULL,*CAfile=NULL;
 672         unsigned char *context = NULL;
 673         char *dhfile = NULL;
 674 #ifndef OPENSSL_NO_ECDH
 675         char *named_curve = NULL;
 676 #endif
 677         int badop=0,bugs=0;
 678         int ret=1;
 679         int off=0;
 680         int no_tmp_rsa=0,no_dhe=0,no_ecdhe=0,nocert=0;
 681         int state=0;
 682         const SSL_METHOD *meth=NULL;
 683         int socket_type=SOCK_STREAM;
 684 #ifndef OPENSSL_NO_ENGINE
 685         ENGINE *e=NULL;
 686 #endif
 687         char *inrand=NULL;
 688         int s_cert_format = FORMAT_PEM, s_key_format = FORMAT_PEM;
 689         char *passarg = NULL, *pass = NULL;
 690         char *dpassarg = NULL, *dpass = NULL;
 691         int s_dcert_format = FORMAT_PEM, s_dkey_format = FORMAT_PEM;
 692         X509 *s_cert = NULL, *s_dcert = NULL;
 693         EVP_PKEY *s_key = NULL, *s_dkey = NULL;
 694 #ifndef OPENSSL_NO_TLSEXT
 695         EVP_PKEY *s_key2 = NULL;
 696         X509 *s_cert2 = NULL;
 697 #endif
 698
 699 #ifndef OPENSSL_NO_TLSEXT
 700         tlsextctx tlsextcbp = {NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING};
 701 #endif
 702 #ifndef OPENSSL_NO_PSK
 703         /* by default do not send a PSK identity hint */
 704         static char *psk_identity_hint=NULL;
 705 #endif
 706 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 707         meth=SSLv23_server_method();
 708 #elif !defined(OPENSSL_NO_SSL3)
 709         meth=SSLv3_server_method();
 710 #elif !defined(OPENSSL_NO_SSL2)
 711         meth=SSLv2_server_method();
 712 #endif
 713
 714         local_argc=argc;
 715         local_argv=argv;
 716
 717         apps_startup();
 718 #ifdef MONOLITH
 719         s_server_init();
 720 #endif
 721
 722         if (bio_err == NULL)
 723                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 724
 725         if (!load_config(bio_err, NULL))
 726                 goto end;
 727
 728         verify_depth=0;
 729 #ifdef FIONBIO
 730         s_nbio=0;
 731 #endif
 732         s_nbio_test=0;
 733
 734         argc--;
 735         argv++;
 736
 737         while (argc >= 1)
 738                 {
 739                 if      ((strcmp(*argv,"-port") == 0) ||
 740                          (strcmp(*argv,"-accept") == 0))
 741                         {
 742                         if (--argc < 1) goto bad;
 743                         if (!extract_port(*(++argv),&port))
 744                                 goto bad;
 745                         }
 746                 else if (strcmp(*argv,"-verify") == 0)
 747                         {
 748                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 749                         if (--argc < 1) goto bad;
 750                         verify_depth=atoi(*(++argv));
 751                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 752                         }
 753                 else if (strcmp(*argv,"-Verify") == 0)
 754                         {
 755                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
 756                                 SSL_VERIFY_CLIENT_ONCE;
 757                         if (--argc < 1) goto bad;
 758                         verify_depth=atoi(*(++argv));
 759                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
 760                         }
 761                 else if (strcmp(*argv,"-context") == 0)
 762                         {
 763                         if (--argc < 1) goto bad;
 764                         context= (unsigned char *)*(++argv);
 765                         }
 766                 else if (strcmp(*argv,"-cert") == 0)
 767                         {
 768                         if (--argc < 1) goto bad;
 769                         s_cert_file= *(++argv);
 770                         }
 771                 else if (strcmp(*argv,"-certform") == 0)
 772                         {
 773                         if (--argc < 1) goto bad;
 774                         s_cert_format = str2fmt(*(++argv));
 775                         }
 776                 else if (strcmp(*argv,"-key") == 0)
 777                         {
 778                         if (--argc < 1) goto bad;
 779                         s_key_file= *(++argv);
 780                         }
 781                 else if (strcmp(*argv,"-keyform") == 0)
 782                         {
 783                         if (--argc < 1) goto bad;
 784                         s_key_format = str2fmt(*(++argv));
 785                         }
 786                 else if (strcmp(*argv,"-pass") == 0)
 787                         {
 788                         if (--argc < 1) goto bad;
 789                         passarg = *(++argv);
 790                         }
 791                 else if (strcmp(*argv,"-dhparam") == 0)
 792                         {
 793                         if (--argc < 1) goto bad;
 794                         dhfile = *(++argv);
 795                         }
 796 #ifndef OPENSSL_NO_ECDH
 797                 else if (strcmp(*argv,"-named_curve") == 0)
 798                         {
 799                         if (--argc < 1) goto bad;
 800                         named_curve = *(++argv);
 801                         }
 802 #endif
 803                 else if (strcmp(*argv,"-dcertform") == 0)
 804                         {
 805                         if (--argc < 1) goto bad;
 806                         s_dcert_format = str2fmt(*(++argv));
 807                         }
 808                 else if (strcmp(*argv,"-dcert") == 0)
 809                         {
 810                         if (--argc < 1) goto bad;
 811                         s_dcert_file= *(++argv);
 812                         }
 813                 else if (strcmp(*argv,"-dkeyform") == 0)
 814                         {
 815                         if (--argc < 1) goto bad;
 816                         s_dkey_format = str2fmt(*(++argv));
 817                         }
 818                 else if (strcmp(*argv,"-dpass") == 0)
 819                         {
 820                         if (--argc < 1) goto bad;
 821                         dpassarg = *(++argv);
 822                         }
 823                 else if (strcmp(*argv,"-dkey") == 0)
 824                         {
 825                         if (--argc < 1) goto bad;
 826                         s_dkey_file= *(++argv);
 827                         }
 828                 else if (strcmp(*argv,"-nocert") == 0)
 829                         {
 830                         nocert=1;
 831                         }
 832                 else if (strcmp(*argv,"-CApath") == 0)
 833                         {
 834                         if (--argc < 1) goto bad;
 835                         CApath= *(++argv);
 836                         }
 837                 else if (strcmp(*argv,"-crl_check") == 0)
 838                         {
 839                         vflags |= X509_V_FLAG_CRL_CHECK;
 840                         }
 841                 else if (strcmp(*argv,"-crl_check") == 0)
 842                         {
 843                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
 844                         }
 845                 else if (strcmp(*argv,"-verify_return_error") == 0)
 846                         verify_return_error = 1;
 847                 else if (strcmp(*argv,"-serverpref") == 0)
 848                         { off|=SSL_OP_CIPHER_SERVER_PREFERENCE; }
 849                 else if (strcmp(*argv,"-cipher") == 0)
 850                         {
 851                         if (--argc < 1) goto bad;
 852                         cipher= *(++argv);
 853                         }
 854                 else if (strcmp(*argv,"-CAfile") == 0)
 855                         {
 856                         if (--argc < 1) goto bad;
 857                         CAfile= *(++argv);
 858                         }
 859 #ifdef FIONBIO
 860                 else if (strcmp(*argv,"-nbio") == 0)
 861                         { s_nbio=1; }
 862 #endif
 863                 else if (strcmp(*argv,"-nbio_test") == 0)
 864                         {
 865 #ifdef FIONBIO
 866                         s_nbio=1;
 867 #endif
 868                         s_nbio_test=1;
 869                         }
 870                 else if (strcmp(*argv,"-debug") == 0)
 871                         { s_debug=1; }
 872                 else if (strcmp(*argv,"-msg") == 0)
 873                         { s_msg=1; }
 874                 else if (strcmp(*argv,"-hack") == 0)
 875                         { hack=1; }
 876                 else if (strcmp(*argv,"-state") == 0)
 877                         { state=1; }
 878                 else if (strcmp(*argv,"-crlf") == 0)
 879                         { s_crlf=1; }
 880                 else if (strcmp(*argv,"-quiet") == 0)
 881                         { s_quiet=1; }
 882                 else if (strcmp(*argv,"-bugs") == 0)
 883                         { bugs=1; }
 884                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
 885                         { no_tmp_rsa=1; }
 886                 else if (strcmp(*argv,"-no_dhe") == 0)
 887                         { no_dhe=1; }
 888                 else if (strcmp(*argv,"-no_ecdhe") == 0)
 889                         { no_ecdhe=1; }
 890 #ifndef OPENSSL_NO_PSK
 891                 else if (strcmp(*argv,"-psk_hint") == 0)
 892                         {
 893                         if (--argc < 1) goto bad;
 894                         psk_identity_hint= *(++argv);
 895                         }
 896                 else if (strcmp(*argv,"-psk") == 0)
 897                         {
 898                         size_t i;
 899
 900                         if (--argc < 1) goto bad;
 901                         psk_key=*(++argv);
 902                         for (i=0; i<strlen(psk_key); i++)
 903                                 {
 904                                 if (isxdigit((int)psk_key[i]))
 905                                         continue;
 906                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
 907                                 goto bad;
 908                                 }
 909                         }
 910 #endif
 911                 else if (strcmp(*argv,"-www") == 0)
 912                         { www=1; }
 913                 else if (strcmp(*argv,"-WWW") == 0)
 914                         { www=2; }
 915                 else if (strcmp(*argv,"-HTTP") == 0)
 916                         { www=3; }
 917                 else if (strcmp(*argv,"-no_ssl2") == 0)
 918                         { off|=SSL_OP_NO_SSLv2; }
 919                 else if (strcmp(*argv,"-no_ssl3") == 0)
 920                         { off|=SSL_OP_NO_SSLv3; }
 921                 else if (strcmp(*argv,"-no_tls1") == 0)
 922                         { off|=SSL_OP_NO_TLSv1; }
 923                 else if (strcmp(*argv,"-no_comp") == 0)
 924                         { off|=SSL_OP_NO_COMPRESSION; }
 925 #ifndef OPENSSL_NO_SSL2
 926                 else if (strcmp(*argv,"-ssl2") == 0)
 927                         { meth=SSLv2_server_method(); }
 928 #endif
 929 #ifndef OPENSSL_NO_SSL3
 930                 else if (strcmp(*argv,"-ssl3") == 0)
 931                         { meth=SSLv3_server_method(); }
 932 #endif
 933 #ifndef OPENSSL_NO_TLS1
 934                 else if (strcmp(*argv,"-tls1") == 0)
 935                         { meth=TLSv1_server_method(); }
 936 #endif
 937 #ifndef OPENSSL_NO_DTLS1
 938                 else if (strcmp(*argv,"-dtls1") == 0)
 939                         {
 940                         meth=DTLSv1_server_method();
 941                         socket_type = SOCK_DGRAM;
 942                         }
 943                 else if (strcmp(*argv,"-timeout") == 0)
 944                         enable_timeouts = 1;
 945                 else if (strcmp(*argv,"-mtu") == 0)
 946                         {
 947                         if (--argc < 1) goto bad;
 948                         socket_mtu = atol(*(++argv));
 949                         }
 950                 else if (strcmp(*argv, "-chain") == 0)
 951                         cert_chain = 1;
 952 #endif
 953                 else if (strcmp(*argv, "-id_prefix") == 0)
 954                         {
 955                         if (--argc < 1) goto bad;
 956                         session_id_prefix = *(++argv);
 957                         }
 958 #ifndef OPENSSL_NO_ENGINE
 959                 else if (strcmp(*argv,"-engine") == 0)
 960                         {
 961                         if (--argc < 1) goto bad;
 962                         engine_id= *(++argv);
 963                         }
 964 #endif
 965                 else if (strcmp(*argv,"-rand") == 0)
 966                         {
 967                         if (--argc < 1) goto bad;
 968                         inrand= *(++argv);
 969                         }
 970 #ifndef OPENSSL_NO_TLSEXT
 971                 else if (strcmp(*argv,"-servername") == 0)
 972                         {
 973                         if (--argc < 1) goto bad;
 974                         tlsextcbp.servername= *(++argv);
 975                         }
 976                 else if (strcmp(*argv,"-servername_fatal") == 0)
 977                         { tlsextcbp.extension_error = SSL_TLSEXT_ERR_ALERT_FATAL; }
 978                 else if (strcmp(*argv,"-cert2") == 0)
 979                         {
 980                         if (--argc < 1) goto bad;
 981                         s_cert_file2= *(++argv);
 982                         }
 983                 else if (strcmp(*argv,"-key2") == 0)
 984                         {
 985                         if (--argc < 1) goto bad;
 986                         s_key_file2= *(++argv);
 987                         }
 988 #endif
 989                 else
 990                         {
 991                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 992                         badop=1;
 993                         break;
 994                         }
 995                 argc--;
 996                 argv++;
 997                 }
 998         if (badop)
 999                 {
1000 bad:
1001                 sv_usage();
1002                 goto end;
1003                 }
1004
1005         SSL_load_error_strings();
1006         OpenSSL_add_ssl_algorithms();
1007
1008 #ifndef OPENSSL_NO_ENGINE
1009         e = setup_engine(bio_err, engine_id, 1);
1010 #endif
1011
1012         if (!app_passwd(bio_err, passarg, dpassarg, &pass, &dpass))
1013                 {
1014                 BIO_printf(bio_err, "Error getting password\n");
1015                 goto end;
1016                 }
1017
1018
1019         if (s_key_file == NULL)
1020                 s_key_file = s_cert_file;
1021 #ifndef OPENSSL_NO_TLSEXT
1022         if (s_key_file2 == NULL)
1023                 s_key_file2 = s_cert_file2;
1024 #endif
1025
1026         if (nocert == 0)
1027                 {
1028                 s_key = load_key(bio_err, s_key_file, s_key_format, 0, pass, e,
1029                        "server certificate private key file");
1030                 if (!s_key)
1031                         {
1032                         ERR_print_errors(bio_err);
1033                         goto end;
1034                         }
1035
1036                 s_cert = load_cert(bio_err,s_cert_file,s_cert_format,
1037                         NULL, e, "server certificate file");
1038
1039                 if (!s_cert)
1040                         {
1041                         ERR_print_errors(bio_err);
1042                         goto end;
1043                         }
1044
1045 #ifndef OPENSSL_NO_TLSEXT
1046                 if (tlsextcbp.servername)
1047                         {
1048                         s_key2 = load_key(bio_err, s_key_file2, s_key_format, 0, pass, e,
1049                                 "second server certificate private key file");
1050                         if (!s_key2)
1051                                 {
1052                                 ERR_print_errors(bio_err);
1053                                 goto end;
1054                                 }
1055
1056                         s_cert2 = load_cert(bio_err,s_cert_file2,s_cert_format,
1057                                 NULL, e, "second server certificate file");
1058
1059                         if (!s_cert2)
1060                                 {
1061                                 ERR_print_errors(bio_err);
1062                                 goto end;
1063                                 }
1064                         }
1065 #endif
1066                 }
1067
1068
1069         if (s_dcert_file)
1070                 {
1071
1072                 if (s_dkey_file == NULL)
1073                         s_dkey_file = s_dcert_file;
1074
1075                 s_dkey = load_key(bio_err, s_dkey_file, s_dkey_format,
1076                                 0, dpass, e,
1077                                "second certificate private key file");
1078                 if (!s_dkey)
1079                         {
1080                         ERR_print_errors(bio_err);
1081                         goto end;
1082                         }
1083
1084                 s_dcert = load_cert(bio_err,s_dcert_file,s_dcert_format,
1085                                 NULL, e, "second server certificate file");
1086
1087                 if (!s_dcert)
1088                         {
1089                         ERR_print_errors(bio_err);
1090                         goto end;
1091                         }
1092
1093                 }
1094
1095         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1096                 && !RAND_status())
1097                 {
1098                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1099                 }
1100         if (inrand != NULL)
1101                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1102                         app_RAND_load_files(inrand));
1103
1104         if (bio_s_out == NULL)
1105                 {
1106                 if (s_quiet && !s_debug && !s_msg)
1107                         {
1108                         bio_s_out=BIO_new(BIO_s_null());
1109                         }
1110                 else
1111                         {
1112                         if (bio_s_out == NULL)
1113                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1114                         }
1115                 }
1116
1117 #if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
1118         if (nocert)
1119 #endif
1120                 {
1121                 s_cert_file=NULL;
1122                 s_key_file=NULL;
1123                 s_dcert_file=NULL;
1124                 s_dkey_file=NULL;
1125 #ifndef OPENSSL_NO_TLSEXT
1126                 s_cert_file2=NULL;
1127                 s_key_file2=NULL;
1128 #endif
1129                 }
1130
1131         ctx=SSL_CTX_new(meth);
1132         if (ctx == NULL)
1133                 {
1134                 ERR_print_errors(bio_err);
1135                 goto end;
1136                 }
1137         if (session_id_prefix)
1138                 {
1139                 if(strlen(session_id_prefix) >= 32)
1140                         BIO_printf(bio_err,
1141 "warning: id_prefix is too long, only one new session will be possible\n");
1142                 else if(strlen(session_id_prefix) >= 16)
1143                         BIO_printf(bio_err,
1144 "warning: id_prefix is too long if you use SSLv2\n");
1145                 if(!SSL_CTX_set_generate_session_id(ctx, generate_session_id))
1146                         {
1147                         BIO_printf(bio_err,"error setting 'id_prefix'\n");
1148                         ERR_print_errors(bio_err);
1149                         goto end;
1150                         }
1151                 BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
1152                 }
1153         SSL_CTX_set_quiet_shutdown(ctx,1);
1154         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
1155         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
1156         SSL_CTX_set_options(ctx,off);
1157         /* DTLS: partial reads end up discarding unread UDP bytes :-(
1158          * Setting read ahead solves this problem.
1159          */
1160         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1161
1162         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1163
1164         SSL_CTX_sess_set_cache_size(ctx,128);
1165
1166 #if 0
1167         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
1168 #endif
1169
1170 #if 0
1171         if (s_cert_file == NULL)
1172                 {
1173                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
1174                 goto end;
1175                 }
1176 #endif
1177
1178         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1179                 (!SSL_CTX_set_default_verify_paths(ctx)))
1180                 {
1181                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
1182                 ERR_print_errors(bio_err);
1183                 /* goto end; */
1184                 }
1185         store = SSL_CTX_get_cert_store(ctx);
1186         X509_STORE_set_flags(store, vflags);
1187
1188 #ifndef OPENSSL_NO_TLSEXT
1189         if (s_cert2)
1190                 {
1191                 ctx2=SSL_CTX_new(meth);
1192                 if (ctx2 == NULL)
1193                         {
1194                         ERR_print_errors(bio_err);
1195                         goto end;
1196                         }
1197                 }
1198
1199         if (ctx2)
1200                 {
1201                 BIO_printf(bio_s_out,"Setting secondary ctx parameters\n");
1202
1203                 if (session_id_prefix)
1204                         {
1205                         if(strlen(session_id_prefix) >= 32)
1206                                 BIO_printf(bio_err,
1207                                         "warning: id_prefix is too long, only one new session will be possible\n");
1208                         else if(strlen(session_id_prefix) >= 16)
1209                                 BIO_printf(bio_err,
1210                                         "warning: id_prefix is too long if you use SSLv2\n");
1211                         if(!SSL_CTX_set_generate_session_id(ctx2, generate_session_id))
1212                                 {
1213                                 BIO_printf(bio_err,"error setting 'id_prefix'\n");
1214                                 ERR_print_errors(bio_err);
1215                                 goto end;
1216                                 }
1217                         BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
1218                         }
1219                 SSL_CTX_set_quiet_shutdown(ctx2,1);
1220                 if (bugs) SSL_CTX_set_options(ctx2,SSL_OP_ALL);
1221                 if (hack) SSL_CTX_set_options(ctx2,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
1222                 SSL_CTX_set_options(ctx2,off);
1223                 /* DTLS: partial reads end up discarding unread UDP bytes :-(
1224                  * Setting read ahead solves this problem.
1225                  */
1226                 if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx2, 1);
1227
1228                 if (state) SSL_CTX_set_info_callback(ctx2,apps_ssl_info_callback);
1229
1230                 SSL_CTX_sess_set_cache_size(ctx2,128);
1231
1232                 if ((!SSL_CTX_load_verify_locations(ctx2,CAfile,CApath)) ||
1233                         (!SSL_CTX_set_default_verify_paths(ctx2)))
1234                         {
1235                         ERR_print_errors(bio_err);
1236                         }
1237                 store = SSL_CTX_get_cert_store(ctx2);
1238                 X509_STORE_set_flags(store, vflags);
1239                 }
1240 #endif
1241
1242 #ifndef OPENSSL_NO_DH
1243         if (!no_dhe)
1244                 {
1245                 DH *dh=NULL;
1246
1247                 if (dhfile)
1248                         dh = load_dh_param(dhfile);
1249                 else if (s_cert_file)
1250                         dh = load_dh_param(s_cert_file);
1251
1252                 if (dh != NULL)
1253                         {
1254                         BIO_printf(bio_s_out,"Setting temp DH parameters\n");
1255                         }
1256                 else
1257                         {
1258                         BIO_printf(bio_s_out,"Using default temp DH parameters\n");
1259                         dh=get_dh512();
1260                         }
1261                 (void)BIO_flush(bio_s_out);
1262
1263                 SSL_CTX_set_tmp_dh(ctx,dh);
1264 #ifndef OPENSSL_NO_TLSEXT
1265                 if (ctx2)
1266                         {
1267                         if (!dhfile)
1268                                 {
1269                                 DH *dh2=load_dh_param(s_cert_file2);
1270                                 if (dh2 != NULL)
1271                                         {
1272                                         BIO_printf(bio_s_out,"Setting temp DH parameters\n");
1273                                         (void)BIO_flush(bio_s_out);
1274
1275                                         DH_free(dh);
1276                                         dh = dh2;
1277                                         }
1278                                 }
1279                         SSL_CTX_set_tmp_dh(ctx2,dh);
1280                         }
1281 #endif
1282                 DH_free(dh);
1283                 }
1284 #endif
1285
1286 #ifndef OPENSSL_NO_ECDH
1287         if (!no_ecdhe)
1288                 {
1289                 EC_KEY *ecdh=NULL;
1290
1291                 if (named_curve)
1292                         {
1293                         int nid = OBJ_sn2nid(named_curve);
1294
1295                         if (nid == 0)
1296                                 {
1297                                 BIO_printf(bio_err, "unknown curve name (%s)\n",
1298                                         named_curve);
1299                                 goto end;
1300                                 }
1301                         ecdh = EC_KEY_new_by_curve_name(nid);
1302                         if (ecdh == NULL)
1303                                 {
1304                                 BIO_printf(bio_err, "unable to create curve (%s)\n",
1305                                         named_curve);
1306                                 goto end;
1307                                 }
1308                         }
1309
1310                 if (ecdh != NULL)
1311                         {
1312                         BIO_printf(bio_s_out,"Setting temp ECDH parameters\n");
1313                         }
1314                 else
1315                         {
1316                         BIO_printf(bio_s_out,"Using default temp ECDH parameters\n");
1317                         ecdh = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
1318                         if (ecdh == NULL)
1319                                 {
1320                                 BIO_printf(bio_err, "unable to create curve (nistp256)\n");
1321                                 goto end;
1322                                 }
1323                         }
1324                 (void)BIO_flush(bio_s_out);
1325
1326                 SSL_CTX_set_tmp_ecdh(ctx,ecdh);
1327 #ifndef OPENSSL_NO_TLSEXT
1328                 if (ctx2)
1329                         SSL_CTX_set_tmp_ecdh(ctx2,ecdh);
1330 #endif
1331                 EC_KEY_free(ecdh);
1332                 }
1333 #endif
1334
1335         if (!set_cert_key_stuff(ctx,s_cert,s_key))
1336                 goto end;
1337 #ifndef OPENSSL_NO_TLSEXT
1338         if (ctx2 && !set_cert_key_stuff(ctx2,s_cert2,s_key2))
1339                 goto end;
1340 #endif
1341         if (s_dcert != NULL)
1342                 {
1343                 if (!set_cert_key_stuff(ctx,s_dcert,s_dkey))
1344                         goto end;
1345                 }
1346
1347 #ifndef OPENSSL_NO_RSA
1348 #if 1
1349         if (!no_tmp_rsa)
1350                 {
1351                 SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
1352 #ifndef OPENSSL_NO_TLSEXT
1353                 if (ctx2)
1354                         SSL_CTX_set_tmp_rsa_callback(ctx2,tmp_rsa_cb);
1355 #endif
1356                 }
1357 #else
1358         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
1359                 {
1360                 RSA *rsa;
1361
1362                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
1363                 BIO_flush(bio_s_out);
1364
1365                 rsa=RSA_generate_key(512,RSA_F4,NULL);
1366
1367                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
1368                         {
1369                         ERR_print_errors(bio_err);
1370                         goto end;
1371                         }
1372 #ifndef OPENSSL_NO_TLSEXT
1373                         if (ctx2)
1374                                 {
1375                                 if (!SSL_CTX_set_tmp_rsa(ctx2,rsa))
1376                                         {
1377                                         ERR_print_errors(bio_err);
1378                                         goto end;
1379                                         }
1380                                 }
1381 #endif
1382                 RSA_free(rsa);
1383                 BIO_printf(bio_s_out,"\n");
1384                 }
1385 #endif
1386 #endif
1387
1388 #ifndef OPENSSL_NO_PSK
1389         if (psk_key != NULL)
1390                 {
1391                 if (s_debug)
1392                         BIO_printf(bio_s_out, "PSK key given, setting server callback\n");
1393                 SSL_CTX_set_psk_server_callback(ctx, psk_server_cb);
1394                 }
1395
1396         if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint))
1397                 {
1398                 BIO_printf(bio_err,"error setting PSK identity hint to context\n");
1399                 ERR_print_errors(bio_err);
1400                 goto end;
1401                 }
1402 #endif
1403
1404         if (cipher != NULL)
1405                 {
1406                 if(!SSL_CTX_set_cipher_list(ctx,cipher))
1407                         {
1408                         BIO_printf(bio_err,"error setting cipher list\n");
1409                         ERR_print_errors(bio_err);
1410                         goto end;
1411                         }
1412 #ifndef OPENSSL_NO_TLSEXT
1413                 if (ctx2 && !SSL_CTX_set_cipher_list(ctx2,cipher))
1414                         {
1415                         BIO_printf(bio_err,"error setting cipher list\n");
1416                         ERR_print_errors(bio_err);
1417                         goto end;
1418                         }
1419 #endif
1420                 }
1421         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
1422         SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,
1423                 sizeof s_server_session_id_context);
1424
1425 #ifndef OPENSSL_NO_TLSEXT
1426         if (ctx2)
1427                 {
1428                 SSL_CTX_set_verify(ctx2,s_server_verify,verify_callback);
1429                 SSL_CTX_set_session_id_context(ctx2,(void*)&s_server_session_id_context,
1430                         sizeof s_server_session_id_context);
1431
1432                 tlsextcbp.biodebug = bio_s_out;
1433                 SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
1434                 SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
1435                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1436                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1437                 }
1438 #endif
1439
1440         if (CAfile != NULL)
1441                 {
1442                 SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
1443 #ifndef OPENSSL_NO_TLSEXT
1444                 if (ctx2)
1445                         SSL_CTX_set_client_CA_list(ctx2,SSL_load_client_CA_file(CAfile));
1446 #endif
1447                 }
1448
1449         BIO_printf(bio_s_out,"ACCEPT\n");
1450         if (www)
1451                 do_server(port,socket_type,&accept_socket,www_body, context);
1452         else
1453                 do_server(port,socket_type,&accept_socket,sv_body, context);
1454         print_stats(bio_s_out,ctx);
1455         ret=0;
1456 end:
1457         if (ctx != NULL) SSL_CTX_free(ctx);
1458         if (s_cert)
1459                 X509_free(s_cert);
1460         if (s_dcert)
1461                 X509_free(s_dcert);
1462         if (s_key)
1463                 EVP_PKEY_free(s_key);
1464         if (s_dkey)
1465                 EVP_PKEY_free(s_dkey);
1466         if (pass)
1467                 OPENSSL_free(pass);
1468         if (dpass)
1469                 OPENSSL_free(dpass);
1470 #ifndef OPENSSL_NO_TLSEXT
1471         if (ctx2 != NULL) SSL_CTX_free(ctx2);
1472         if (s_cert2)
1473                 X509_free(s_cert2);
1474         if (s_key2)
1475                 EVP_PKEY_free(s_key2);
1476 #endif
1477         if (bio_s_out != NULL)
1478                 {
1479         BIO_free(bio_s_out);
1480                 bio_s_out=NULL;
1481                 }
1482         apps_shutdown();
1483         OPENSSL_EXIT(ret);
1484         }
1485
1486 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
1487         {
1488         BIO_printf(bio,"%4ld items in the session cache\n",
1489                 SSL_CTX_sess_number(ssl_ctx));
1490         BIO_printf(bio,"%4ld client connects (SSL_connect())\n",
1491                 SSL_CTX_sess_connect(ssl_ctx));
1492         BIO_printf(bio,"%4ld client renegotiates (SSL_connect())\n",
1493                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
1494         BIO_printf(bio,"%4ld client connects that finished\n",
1495                 SSL_CTX_sess_connect_good(ssl_ctx));
1496         BIO_printf(bio,"%4ld server accepts (SSL_accept())\n",
1497                 SSL_CTX_sess_accept(ssl_ctx));
1498         BIO_printf(bio,"%4ld server renegotiates (SSL_accept())\n",
1499                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
1500         BIO_printf(bio,"%4ld server accepts that finished\n",
1501                 SSL_CTX_sess_accept_good(ssl_ctx));
1502         BIO_printf(bio,"%4ld session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
1503         BIO_printf(bio,"%4ld session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
1504         BIO_printf(bio,"%4ld session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
1505         BIO_printf(bio,"%4ld callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
1506         BIO_printf(bio,"%4ld cache full overflows (%ld allowed)\n",
1507                 SSL_CTX_sess_cache_full(ssl_ctx),
1508                 SSL_CTX_sess_get_cache_size(ssl_ctx));
1509         }
1510
1511 static int sv_body(char *hostname, int s, unsigned char *context)
1512         {
1513         char *buf=NULL;
1514         fd_set readfds;
1515         int ret=1,width;
1516         int k,i;
1517         unsigned long l;
1518         SSL *con=NULL;
1519         BIO *sbio;
1520 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
1521         struct timeval tv;
1522 #endif
1523
1524         if ((buf=OPENSSL_malloc(bufsize)) == NULL)
1525                 {
1526                 BIO_printf(bio_err,"out of memory\n");
1527                 goto err;
1528                 }
1529 #ifdef FIONBIO
1530         if (s_nbio)
1531                 {
1532                 unsigned long sl=1;
1533
1534                 if (!s_quiet)
1535                         BIO_printf(bio_err,"turning on non blocking io\n");
1536                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
1537                         ERR_print_errors(bio_err);
1538                 }
1539 #endif
1540
1541         if (con == NULL) {
1542                 con=SSL_new(ctx);
1543 #ifndef OPENSSL_NO_KRB5
1544                 if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
1545                         {
1546                         kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE,
1547                                                                 KRB5SVC);
1548                         kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB,
1549                                                                 KRB5KEYTAB);
1550                         }
1551 #endif  /* OPENSSL_NO_KRB5 */
1552                 if(context)
1553                       SSL_set_session_id_context(con, context,
1554                                                  strlen((char *)context));
1555         }
1556         SSL_clear(con);
1557
1558         if (SSL_version(con) == DTLS1_VERSION)
1559                 {
1560                 struct timeval timeout;
1561
1562                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1563
1564                 if (enable_timeouts)
1565                         {
1566                         timeout.tv_sec = 0;
1567                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1568                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1569
1570                         timeout.tv_sec = 0;
1571                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1572                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1573                         }
1574
1575                 if (socket_mtu > 0)
1576                         {
1577                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1578                         SSL_set_mtu(con, socket_mtu);
1579                         }
1580                 else
1581                         /* want to do MTU discovery */
1582                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1583
1584         /* turn on cookie exchange */
1585         SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
1586                 }
1587         else
1588                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1589
1590         if (s_nbio_test)
1591                 {
1592                 BIO *test;
1593
1594                 test=BIO_new(BIO_f_nbio_test());
1595                 sbio=BIO_push(test,sbio);
1596                 }
1597         SSL_set_bio(con,sbio,sbio);
1598         SSL_set_accept_state(con);
1599         /* SSL_set_fd(con,s); */
1600
1601         if (s_debug)
1602                 {
1603                 con->debug=1;
1604                 BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
1605                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
1606                 }
1607         if (s_msg)
1608                 {
1609                 SSL_set_msg_callback(con, msg_cb);
1610                 SSL_set_msg_callback_arg(con, bio_s_out);
1611                 }
1612
1613         width=s+1;
1614         for (;;)
1615                 {
1616                 int read_from_terminal;
1617                 int read_from_sslcon;
1618
1619                 read_from_terminal = 0;
1620                 read_from_sslcon = SSL_pending(con);
1621
1622                 if (!read_from_sslcon)
1623                         {
1624                         FD_ZERO(&readfds);
1625 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined(OPENSSL_SYS_BEOS_R5)
1626                         openssl_fdset(fileno(stdin),&readfds);
1627 #endif
1628                         openssl_fdset(s,&readfds);
1629                         /* Note: under VMS with SOCKETSHR the second parameter is
1630                          * currently of type (int *) whereas under other systems
1631                          * it is (void *) if you don't have a cast it will choke
1632                          * the compiler: if you do have a cast then you can either
1633                          * go for (int *) or (void *).
1634                          */
1635 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
1636                         /* Under DOS (non-djgpp) and Windows we can't select on stdin: only
1637                          * on sockets. As a workaround we timeout the select every
1638                          * second and check for any keypress. In a proper Windows
1639                          * application we wouldn't do this because it is inefficient.
1640                          */
1641                         tv.tv_sec = 1;
1642                         tv.tv_usec = 0;
1643                         i=select(width,(void *)&readfds,NULL,NULL,&tv);
1644                         if((i < 0) || (!i && !_kbhit() ) )continue;
1645                         if(_kbhit())
1646                                 read_from_terminal = 1;
1647 #elif defined(OPENSSL_SYS_BEOS_R5)
1648                         /* Under BeOS-R5 the situation is similar to DOS */
1649                         tv.tv_sec = 1;
1650                         tv.tv_usec = 0;
1651                         (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
1652                         i=select(width,(void *)&readfds,NULL,NULL,&tv);
1653                         if ((i < 0) || (!i && read(fileno(stdin), buf, 0) < 0))
1654                                 continue;
1655                         if (read(fileno(stdin), buf, 0) >= 0)
1656                                 read_from_terminal = 1;
1657                         (void)fcntl(fileno(stdin), F_SETFL, 0);
1658 #else
1659                         i=select(width,(void *)&readfds,NULL,NULL,NULL);
1660                         if (i <= 0) continue;
1661                         if (FD_ISSET(fileno(stdin),&readfds))
1662                                 read_from_terminal = 1;
1663 #endif
1664                         if (FD_ISSET(s,&readfds))
1665                                 read_from_sslcon = 1;
1666                         }
1667                 if (read_from_terminal)
1668                         {
1669                         if (s_crlf)
1670                                 {
1671                                 int j, lf_num;
1672
1673                                 i=raw_read_stdin(buf, bufsize/2);
1674                                 lf_num = 0;
1675                                 /* both loops are skipped when i <= 0 */
1676                                 for (j = 0; j < i; j++)
1677                                         if (buf[j] == '\n')
1678                                                 lf_num++;
1679                                 for (j = i-1; j >= 0; j--)
1680                                         {
1681                                         buf[j+lf_num] = buf[j];
1682                                         if (buf[j] == '\n')
1683                                                 {
1684                                                 lf_num--;
1685                                                 i++;
1686                                                 buf[j+lf_num] = '\r';
1687                                                 }
1688                                         }
1689                                 assert(lf_num == 0);
1690                                 }
1691                         else
1692                                 i=raw_read_stdin(buf,bufsize);
1693                         if (!s_quiet)
1694                                 {
1695                                 if ((i <= 0) || (buf[0] == 'Q'))
1696                                         {
1697                                         BIO_printf(bio_s_out,"DONE\n");
1698                                         SHUTDOWN(s);
1699                                         close_accept_socket();
1700                                         ret= -11;
1701                                         goto err;
1702                                         }
1703                                 if ((i <= 0) || (buf[0] == 'q'))
1704                                         {
1705                                         BIO_printf(bio_s_out,"DONE\n");
1706                                         if (SSL_version(con) != DTLS1_VERSION)
1707                         SHUTDOWN(s);
1708         /*                              close_accept_socket();
1709                                         ret= -11;*/
1710                                         goto err;
1711                                         }
1712
1713                                 if ((buf[0] == 'r') &&
1714                                         ((buf[1] == '\n') || (buf[1] == '\r')))
1715                                         {
1716                                         SSL_renegotiate(con);
1717                                         i=SSL_do_handshake(con);
1718                                         printf("SSL_do_handshake -> %d\n",i);
1719                                         i=0; /*13; */
1720                                         continue;
1721                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
1722                                         }
1723                                 if ((buf[0] == 'R') &&
1724                                         ((buf[1] == '\n') || (buf[1] == '\r')))
1725                                         {
1726                                         SSL_set_verify(con,
1727                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
1728                                         SSL_renegotiate(con);
1729                                         i=SSL_do_handshake(con);
1730                                         printf("SSL_do_handshake -> %d\n",i);
1731                                         i=0; /* 13; */
1732                                         continue;
1733                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
1734                                         }
1735                                 if (buf[0] == 'P')
1736                                         {
1737                                         static const char *str="Lets print some clear text\n";
1738                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
1739                                         }
1740                                 if (buf[0] == 'S')
1741                                         {
1742                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
1743                                         }
1744                                 }
1745 #ifdef CHARSET_EBCDIC
1746                         ebcdic2ascii(buf,buf,i);
1747 #endif
1748                         l=k=0;
1749                         for (;;)
1750                                 {
1751                                 /* should do a select for the write */
1752 #ifdef RENEG
1753 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
1754 #endif
1755                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
1756                                 switch (SSL_get_error(con,k))
1757                                         {
1758                                 case SSL_ERROR_NONE:
1759                                         break;
1760                                 case SSL_ERROR_WANT_WRITE:
1761                                 case SSL_ERROR_WANT_READ:
1762                                 case SSL_ERROR_WANT_X509_LOOKUP:
1763                                         BIO_printf(bio_s_out,"Write BLOCK\n");
1764                                         break;
1765                                 case SSL_ERROR_SYSCALL:
1766                                 case SSL_ERROR_SSL:
1767                                         BIO_printf(bio_s_out,"ERROR\n");
1768                                         ERR_print_errors(bio_err);
1769                                         ret=1;
1770                                         goto err;
1771                                         /* break; */
1772                                 case SSL_ERROR_ZERO_RETURN:
1773                                         BIO_printf(bio_s_out,"DONE\n");
1774                                         ret=1;
1775                                         goto err;
1776                                         }
1777                                 l+=k;
1778                                 i-=k;
1779                                 if (i <= 0) break;
1780                                 }
1781                         }
1782                 if (read_from_sslcon)
1783                         {
1784                         if (!SSL_is_init_finished(con))
1785                                 {
1786                                 i=init_ssl_connection(con);
1787
1788                                 if (i < 0)
1789                                         {
1790                                         ret=0;
1791                                         goto err;
1792                                         }
1793                                 else if (i == 0)
1794                                         {
1795                                         ret=1;
1796                                         goto err;
1797                                         }
1798                                 }
1799                         else
1800                                 {
1801 again:
1802                                 i=SSL_read(con,(char *)buf,bufsize);
1803                                 switch (SSL_get_error(con,i))
1804                                         {
1805                                 case SSL_ERROR_NONE:
1806 #ifdef CHARSET_EBCDIC
1807                                         ascii2ebcdic(buf,buf,i);
1808 #endif
1809                                         raw_write_stdout(buf,
1810                                                 (unsigned int)i);
1811                                         if (SSL_pending(con)) goto again;
1812                                         break;
1813                                 case SSL_ERROR_WANT_WRITE:
1814                                 case SSL_ERROR_WANT_READ:
1815                                 case SSL_ERROR_WANT_X509_LOOKUP:
1816                                         BIO_printf(bio_s_out,"Read BLOCK\n");
1817                                         break;
1818                                 case SSL_ERROR_SYSCALL:
1819                                 case SSL_ERROR_SSL:
1820                                         BIO_printf(bio_s_out,"ERROR\n");
1821                                         ERR_print_errors(bio_err);
1822                                         ret=1;
1823                                         goto err;
1824                                 case SSL_ERROR_ZERO_RETURN:
1825                                         BIO_printf(bio_s_out,"DONE\n");
1826                                         ret=1;
1827                                         goto err;
1828                                         }
1829                                 }
1830                         }
1831                 }
1832 err:
1833         if (con != NULL)
1834                 {
1835                 BIO_printf(bio_s_out,"shutting down SSL\n");
1836 #if 1
1837                 SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1838 #else
1839                 SSL_shutdown(con);
1840 #endif
1841                 SSL_free(con);
1842                 }
1843         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
1844         if (buf != NULL)
1845                 {
1846                 OPENSSL_cleanse(buf,bufsize);
1847                 OPENSSL_free(buf);
1848                 }
1849         if (ret >= 0)
1850                 BIO_printf(bio_s_out,"ACCEPT\n");
1851         return(ret);
1852         }
1853
1854 static void close_accept_socket(void)
1855         {
1856         BIO_printf(bio_err,"shutdown accept socket\n");
1857         if (accept_socket >= 0)
1858                 {
1859                 SHUTDOWN2(accept_socket);
1860                 }
1861         }
1862
1863 static int init_ssl_connection(SSL *con)
1864         {
1865         int i;
1866         const char *str;
1867         X509 *peer;
1868         long verify_error;
1869         MS_STATIC char buf[BUFSIZ];
1870
1871         if ((i=SSL_accept(con)) <= 0)
1872                 {
1873                 if (BIO_sock_should_retry(i))
1874                         {
1875                         BIO_printf(bio_s_out,"DELAY\n");
1876                         return(1);
1877                         }
1878
1879                 BIO_printf(bio_err,"ERROR\n");
1880                 verify_error=SSL_get_verify_result(con);
1881                 if (verify_error != X509_V_OK)
1882                         {
1883                         BIO_printf(bio_err,"verify error:%s\n",
1884                                 X509_verify_cert_error_string(verify_error));
1885                         }
1886                 else
1887                         ERR_print_errors(bio_err);
1888                 return(0);
1889                 }
1890
1891         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
1892
1893         peer=SSL_get_peer_certificate(con);
1894         if (peer != NULL)
1895                 {
1896                 BIO_printf(bio_s_out,"Client certificate\n");
1897                 PEM_write_bio_X509(bio_s_out,peer);
1898                 X509_NAME_oneline(X509_get_subject_name(peer),buf,sizeof buf);
1899                 BIO_printf(bio_s_out,"subject=%s\n",buf);
1900                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,sizeof buf);
1901                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
1902                 X509_free(peer);
1903                 }
1904
1905         if (SSL_get_shared_ciphers(con,buf,sizeof buf) != NULL)
1906                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
1907         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
1908         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
1909         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
1910         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
1911                 TLS1_FLAGS_TLS_PADDING_BUG)
1912                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
1913 #ifndef OPENSSL_NO_KRB5
1914         if (con->kssl_ctx->client_princ != NULL)
1915                 {
1916                 BIO_printf(bio_s_out,"Kerberos peer principal is %s\n",
1917                         con->kssl_ctx->client_princ);
1918                 }
1919 #endif /* OPENSSL_NO_KRB5 */
1920         return(1);
1921         }
1922
1923 #ifndef OPENSSL_NO_DH
1924 static DH *load_dh_param(const char *dhfile)
1925         {
1926         DH *ret=NULL;
1927         BIO *bio;
1928
1929         if ((bio=BIO_new_file(dhfile,"r")) == NULL)
1930                 goto err;
1931         ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);
1932 err:
1933         if (bio != NULL) BIO_free(bio);
1934         return(ret);
1935         }
1936 #endif
1937
1938 #if 0
1939 static int load_CA(SSL_CTX *ctx, char *file)
1940         {
1941         FILE *in;
1942         X509 *x=NULL;
1943
1944         if ((in=fopen(file,"r")) == NULL)
1945                 return(0);
1946
1947         for (;;)
1948                 {
1949                 if (PEM_read_X509(in,&x,NULL) == NULL)
1950                         break;
1951                 SSL_CTX_add_client_CA(ctx,x);
1952                 }
1953         if (x != NULL) X509_free(x);
1954         fclose(in);
1955         return(1);
1956         }
1957 #endif
1958
1959 static int www_body(char *hostname, int s, unsigned char *context)
1960         {
1961         char *buf=NULL;
1962         int ret=1;
1963         int i,j,k,blank,dot;
1964         SSL *con;
1965         SSL_CIPHER *c;
1966         BIO *io,*ssl_bio,*sbio;
1967         long total_bytes;
1968
1969         buf=OPENSSL_malloc(bufsize);
1970         if (buf == NULL) return(0);
1971         io=BIO_new(BIO_f_buffer());
1972         ssl_bio=BIO_new(BIO_f_ssl());
1973         if ((io == NULL) || (ssl_bio == NULL)) goto err;
1974
1975 #ifdef FIONBIO
1976         if (s_nbio)
1977                 {
1978                 unsigned long sl=1;
1979
1980                 if (!s_quiet)
1981                         BIO_printf(bio_err,"turning on non blocking io\n");
1982                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
1983                         ERR_print_errors(bio_err);
1984                 }
1985 #endif
1986
1987         /* lets make the output buffer a reasonable size */
1988         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
1989
1990         if ((con=SSL_new(ctx)) == NULL) goto err;
1991 #ifndef OPENSSL_NO_KRB5
1992         if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
1993                 {
1994                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE, KRB5SVC);
1995                 kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB, KRB5KEYTAB);
1996                 }
1997 #endif  /* OPENSSL_NO_KRB5 */
1998         if(context) SSL_set_session_id_context(con, context,
1999                                                strlen((char *)context));
2000
2001         sbio=BIO_new_socket(s,BIO_NOCLOSE);
2002         if (s_nbio_test)
2003                 {
2004                 BIO *test;
2005
2006                 test=BIO_new(BIO_f_nbio_test());
2007                 sbio=BIO_push(test,sbio);
2008                 }
2009         SSL_set_bio(con,sbio,sbio);
2010         SSL_set_accept_state(con);
2011
2012         /* SSL_set_fd(con,s); */
2013         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
2014         BIO_push(io,ssl_bio);
2015 #ifdef CHARSET_EBCDIC
2016         io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);
2017 #endif
2018
2019         if (s_debug)
2020                 {
2021                 con->debug=1;
2022                 BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
2023                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
2024                 }
2025         if (s_msg)
2026                 {
2027                 SSL_set_msg_callback(con, msg_cb);
2028                 SSL_set_msg_callback_arg(con, bio_s_out);
2029                 }
2030
2031         blank=0;
2032         for (;;)
2033                 {
2034                 if (hack)
2035                         {
2036                         i=SSL_accept(con);
2037
2038                         switch (SSL_get_error(con,i))
2039                                 {
2040                         case SSL_ERROR_NONE:
2041                                 break;
2042                         case SSL_ERROR_WANT_WRITE:
2043                         case SSL_ERROR_WANT_READ:
2044                         case SSL_ERROR_WANT_X509_LOOKUP:
2045                                 continue;
2046                         case SSL_ERROR_SYSCALL:
2047                         case SSL_ERROR_SSL:
2048                         case SSL_ERROR_ZERO_RETURN:
2049                                 ret=1;
2050                                 goto err;
2051                                 /* break; */
2052                                 }
2053
2054                         SSL_renegotiate(con);
2055                         SSL_write(con,NULL,0);
2056                         }
2057
2058                 i=BIO_gets(io,buf,bufsize-1);
2059                 if (i < 0) /* error */
2060                         {
2061                         if (!BIO_should_retry(io))
2062                                 {
2063                                 if (!s_quiet)
2064                                         ERR_print_errors(bio_err);
2065                                 goto err;
2066                                 }
2067                         else
2068                                 {
2069                                 BIO_printf(bio_s_out,"read R BLOCK\n");
2070 #if defined(OPENSSL_SYS_NETWARE)
2071             delay(1000);
2072 #elif !defined(OPENSSL_SYS_MSDOS) && !defined(__DJGPP__)
2073                                 sleep(1);
2074 #endif
2075                                 continue;
2076                                 }
2077                         }
2078                 else if (i == 0) /* end of input */
2079                         {
2080                         ret=1;
2081                         goto end;
2082                         }
2083
2084                 /* else we have data */
2085                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
2086                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
2087                         {
2088                         char *p;
2089                         X509 *peer;
2090                         STACK_OF(SSL_CIPHER) *sk;
2091                         static const char *space="                          ";
2092
2093                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
2094                         BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");
2095                         BIO_puts(io,"<pre>\n");
2096 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
2097                         BIO_puts(io,"\n");
2098                         for (i=0; i<local_argc; i++)
2099                                 {
2100                                 BIO_puts(io,local_argv[i]);
2101                                 BIO_write(io," ",1);
2102                                 }
2103                         BIO_puts(io,"\n");
2104
2105                         /* The following is evil and should not really
2106                          * be done */
2107                         BIO_printf(io,"Ciphers supported in s_server binary\n");
2108                         sk=SSL_get_ciphers(con);
2109                         j=sk_SSL_CIPHER_num(sk);
2110                         for (i=0; i<j; i++)
2111                                 {
2112                                 c=sk_SSL_CIPHER_value(sk,i);
2113                                 BIO_printf(io,"%-11s:%-25s",
2114                                         SSL_CIPHER_get_version(c),
2115                                         SSL_CIPHER_get_name(c));
2116                                 if ((((i+1)%2) == 0) && (i+1 != j))
2117                                         BIO_puts(io,"\n");
2118                                 }
2119                         BIO_puts(io,"\n");
2120                         p=SSL_get_shared_ciphers(con,buf,bufsize);
2121                         if (p != NULL)
2122                                 {
2123                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
2124                                 j=i=0;
2125                                 while (*p)
2126                                         {
2127                                         if (*p == ':')
2128                                                 {
2129                                                 BIO_write(io,space,26-j);
2130                                                 i++;
2131                                                 j=0;
2132                                                 BIO_write(io,((i%3)?" ":"\n"),1);
2133                                                 }
2134                                         else
2135                                                 {
2136                                                 BIO_write(io,p,1);
2137                                                 j++;
2138                                                 }
2139                                         p++;
2140                                         }
2141                                 BIO_puts(io,"\n");
2142                                 }
2143                         BIO_printf(io,((con->hit)
2144                                 ?"---\nReused, "
2145                                 :"---\nNew, "));
2146                         c=SSL_get_current_cipher(con);
2147                         BIO_printf(io,"%s, Cipher is %s\n",
2148                                 SSL_CIPHER_get_version(c),
2149                                 SSL_CIPHER_get_name(c));
2150                         SSL_SESSION_print(io,SSL_get_session(con));
2151                         BIO_printf(io,"---\n");
2152                         print_stats(io,SSL_get_SSL_CTX(con));
2153                         BIO_printf(io,"---\n");
2154                         peer=SSL_get_peer_certificate(con);
2155                         if (peer != NULL)
2156                                 {
2157                                 BIO_printf(io,"Client certificate\n");
2158                                 X509_print(io,peer);
2159                                 PEM_write_bio_X509(io,peer);
2160                                 }
2161                         else
2162                                 BIO_puts(io,"no client certificate available\n");
2163                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
2164                         break;
2165                         }
2166                 else if ((www == 2 || www == 3)
2167                          && (strncmp("GET /",buf,5) == 0))
2168                         {
2169                         BIO *file;
2170                         char *p,*e;
2171                         static const char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
2172
2173                         /* skip the '/' */
2174                         p= &(buf[5]);
2175
2176                         dot = 1;
2177                         for (e=p; *e != '\0'; e++)
2178                                 {
2179                                 if (e[0] == ' ')
2180                                         break;
2181
2182                                 switch (dot)
2183                                         {
2184                                 case 1:
2185                                         dot = (e[0] == '.') ? 2 : 0;
2186                                         break;
2187                                 case 2:
2188                                         dot = (e[0] == '.') ? 3 : 0;
2189                                         break;
2190                                 case 3:
2191                                         dot = (e[0] == '/') ? -1 : 0;
2192                                         break;
2193                                         }
2194                                 if (dot == 0)
2195                                         dot = (e[0] == '/') ? 1 : 0;
2196                                 }
2197                         dot = (dot == 3) || (dot == -1); /* filename contains ".." component */
2198
2199                         if (*e == '\0')
2200                                 {
2201                                 BIO_puts(io,text);
2202                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
2203                                 break;
2204                                 }
2205                         *e='\0';
2206
2207                         if (dot)
2208                                 {
2209                                 BIO_puts(io,text);
2210                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
2211                                 break;
2212                                 }
2213
2214                         if (*p == '/')
2215                                 {
2216                                 BIO_puts(io,text);
2217                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
2218                                 break;
2219                                 }
2220
2221 #if 0
2222                         /* append if a directory lookup */
2223                         if (e[-1] == '/')
2224                                 strcat(p,"index.html");
2225 #endif
2226
2227                         /* if a directory, do the index thang */
2228                         if (app_isdir(p)>0)
2229                                 {
2230 #if 0 /* must check buffer size */
2231                                 strcat(p,"/index.html");
2232 #else
2233                                 BIO_puts(io,text);
2234                                 BIO_printf(io,"'%s' is a directory\r\n",p);
2235                                 break;
2236 #endif
2237                                 }
2238
2239                         if ((file=BIO_new_file(p,"r")) == NULL)
2240                                 {
2241                                 BIO_puts(io,text);
2242                                 BIO_printf(io,"Error opening '%s'\r\n",p);
2243                                 ERR_print_errors(io);
2244                                 break;
2245                                 }
2246
2247                         if (!s_quiet)
2248                                 BIO_printf(bio_err,"FILE:%s\n",p);
2249
2250                         if (www == 2)
2251                                 {
2252                                 i=strlen(p);
2253                                 if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
2254                                         ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
2255                                         ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
2256                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
2257                                 else
2258                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
2259                                 }
2260                         /* send the file */
2261                         total_bytes=0;
2262                         for (;;)
2263                                 {
2264                                 i=BIO_read(file,buf,bufsize);
2265                                 if (i <= 0) break;
2266
2267 #ifdef RENEG
2268                                 total_bytes+=i;
2269                                 fprintf(stderr,"%d\n",i);
2270                                 if (total_bytes > 3*1024)
2271                                         {
2272                                         total_bytes=0;
2273                                         fprintf(stderr,"RENEGOTIATE\n");
2274                                         SSL_renegotiate(con);
2275                                         }
2276 #endif
2277
2278                                 for (j=0; j<i; )
2279                                         {
2280 #ifdef RENEG
2281 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
2282 #endif
2283                                         k=BIO_write(io,&(buf[j]),i-j);
2284                                         if (k <= 0)
2285                                                 {
2286                                                 if (!BIO_should_retry(io))
2287                                                         goto write_error;
2288                                                 else
2289                                                         {
2290                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
2291                                                         }
2292                                                 }
2293                                         else
2294                                                 {
2295                                                 j+=k;
2296                                                 }
2297                                         }
2298                                 }
2299 write_error:
2300                         BIO_free(file);
2301                         break;
2302                         }
2303                 }
2304
2305         for (;;)
2306                 {
2307                 i=(int)BIO_flush(io);
2308                 if (i <= 0)
2309                         {
2310                         if (!BIO_should_retry(io))
2311                                 break;
2312                         }
2313                 else
2314                         break;
2315                 }
2316 end:
2317 #if 1
2318         /* make sure we re-use sessions */
2319         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
2320 #else
2321         /* This kills performance */
2322 /*      SSL_shutdown(con); A shutdown gets sent in the
2323  *      BIO_free_all(io) procession */
2324 #endif
2325
2326 err:
2327
2328         if (ret >= 0)
2329                 BIO_printf(bio_s_out,"ACCEPT\n");
2330
2331         if (buf != NULL) OPENSSL_free(buf);
2332         if (io != NULL) BIO_free_all(io);
2333 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
2334         return(ret);
2335         }
2336
2337 #ifndef OPENSSL_NO_RSA
2338 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
2339         {
2340         BIGNUM *bn = NULL;
2341         static RSA *rsa_tmp=NULL;
2342
2343         if (!rsa_tmp && ((bn = BN_new()) == NULL))
2344                 BIO_printf(bio_err,"Allocation error in generating RSA key\n");
2345         if (!rsa_tmp && bn)
2346                 {
2347                 if (!s_quiet)
2348                         {
2349                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
2350                         (void)BIO_flush(bio_err);
2351                         }
2352                 if(!BN_set_word(bn, RSA_F4) || ((rsa_tmp = RSA_new()) == NULL) ||
2353                                 !RSA_generate_key_ex(rsa_tmp, keylength, bn, NULL))
2354                         {
2355                         if(rsa_tmp) RSA_free(rsa_tmp);
2356                         rsa_tmp = NULL;
2357                         }
2358                 if (!s_quiet)
2359                         {
2360                         BIO_printf(bio_err,"\n");
2361                         (void)BIO_flush(bio_err);
2362                         }
2363                 BN_free(bn);
2364                 }
2365         return(rsa_tmp);
2366         }
2367 #endif
2368
2369 #define MAX_SESSION_ID_ATTEMPTS 10
2370 static int generate_session_id(const SSL *ssl, unsigned char *id,
2371                                 unsigned int *id_len)
2372         {
2373         unsigned int count = 0;
2374         do      {
2375                 RAND_pseudo_bytes(id, *id_len);
2376                 /* Prefix the session_id with the required prefix. NB: If our
2377                  * prefix is too long, clip it - but there will be worse effects
2378                  * anyway, eg. the server could only possibly create 1 session
2379                  * ID (ie. the prefix!) so all future session negotiations will
2380                  * fail due to conflicts. */
2381                 memcpy(id, session_id_prefix,
2382                         (strlen(session_id_prefix) < *id_len) ?
2383                         strlen(session_id_prefix) : *id_len);
2384                 }
2385         while(SSL_has_matching_session_id(ssl, id, *id_len) &&
2386                 (++count < MAX_SESSION_ID_ATTEMPTS));
2387         if(count >= MAX_SESSION_ID_ATTEMPTS)
2388                 return 0;
2389         return 1;
2390         }