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) 1998-2001 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 /* Until the key-gen callbacks are modified to use newer prototypes, we allow
 118  * deprecated functions for openssl-internal code */
 119 #ifdef OPENSSL_NO_DEPRECATED
 120 #undef OPENSSL_NO_DEPRECATED
 121 #endif
 122
 123 #include <assert.h>
 124 #include <stdio.h>
 125 #include <stdlib.h>
 126 #include <string.h>
 127
 128 #include <sys/stat.h>
 129 #include <openssl/e_os2.h>
 130 #ifdef OPENSSL_NO_STDIO
 131 #define APPS_WIN16
 132 #endif
 133
 134 #if !defined(OPENSSL_SYS_NETWARE)  /* conflicts with winsock2 stuff on netware */
 135 #include <sys/types.h>
 136 #endif
 137
 138 /* With IPv6, it looks like Digital has mixed up the proper order of
 139    recursive header file inclusion, resulting in the compiler complaining
 140    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
 141    is needed to have fileno() declared correctly...  So let's define u_int */
 142 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
 143 #define __U_INT
 144 typedef unsigned int u_int;
 145 #endif
 146
 147 #include <openssl/lhash.h>
 148 #include <openssl/bn.h>
 149 #define USE_SOCKETS
 150 #include "apps.h"
 151 #include <openssl/err.h>
 152 #include <openssl/pem.h>
 153 #include <openssl/x509.h>
 154 #include <openssl/ssl.h>
 155 #include <openssl/rand.h>
 156 #include "s_apps.h"
 157 #include "timeouts.h"
 158
 159 #ifdef OPENSSL_SYS_WINCE
 160 /* Windows CE incorrectly defines fileno as returning void*, so to avoid problems below... */
 161 #ifdef fileno
 162 #undef fileno
 163 #endif
 164 #define fileno(a) (int)_fileno(a)
 165 #endif
 166
 167 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
 168 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
 169 #undef FIONBIO
 170 #endif
 171
 172 #ifndef OPENSSL_NO_RSA
 173 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
 174 #endif
 175 static int sv_body(char *hostname, int s, unsigned char *context);
 176 static int www_body(char *hostname, int s, unsigned char *context);
 177 static void close_accept_socket(void );
 178 static void sv_usage(void);
 179 static int init_ssl_connection(SSL *s);
 180 static void print_stats(BIO *bp,SSL_CTX *ctx);
 181 static int generate_session_id(const SSL *ssl, unsigned char *id,
 182                                 unsigned int *id_len);
 183 #ifndef OPENSSL_NO_DH
 184 static DH *load_dh_param(const char *dhfile);
 185 static DH *get_dh512(void);
 186 #endif
 187
 188 #ifdef MONOLITH
 189 static void s_server_init(void);
 190 #endif
 191
 192 #ifndef S_ISDIR
 193 # if defined(_S_IFMT) && defined(_S_IFDIR)
 194 #  define S_ISDIR(a)    (((a) & _S_IFMT) == _S_IFDIR)
 195 # else
 196 #  define S_ISDIR(a)    (((a) & S_IFMT) == S_IFDIR)
 197 # endif
 198 #endif
 199
 200 #ifndef OPENSSL_NO_DH
 201 static unsigned char dh512_p[]={
 202         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
 203         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
 204         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
 205         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
 206         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
 207         0x47,0x74,0xE8,0x33,
 208         };
 209 static unsigned char dh512_g[]={
 210         0x02,
 211         };
 212
 213 static DH *get_dh512(void)
 214         {
 215         DH *dh=NULL;
 216
 217         if ((dh=DH_new()) == NULL) return(NULL);
 218         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
 219         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
 220         if ((dh->p == NULL) || (dh->g == NULL))
 221                 return(NULL);
 222         return(dh);
 223         }
 224 #endif
 225
 226
 227 /* static int load_CA(SSL_CTX *ctx, char *file);*/
 228
 229 #undef BUFSIZZ
 230 #define BUFSIZZ 16*1024
 231 static int bufsize=BUFSIZZ;
 232 static int accept_socket= -1;
 233
 234 #define TEST_CERT       "server.pem"
 235 #undef PROG
 236 #define PROG            s_server_main
 237
 238 extern int verify_depth;
 239
 240 static char *cipher=NULL;
 241 static int s_server_verify=SSL_VERIFY_NONE;
 242 static int s_server_session_id_context = 1; /* anything will do */
 243 static const char *s_cert_file=TEST_CERT,*s_key_file=NULL;
 244 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
 245 #ifdef FIONBIO
 246 static int s_nbio=0;
 247 #endif
 248 static int s_nbio_test=0;
 249 int s_crlf=0;
 250 static SSL_CTX *ctx=NULL;
 251 static int www=0;
 252
 253 static BIO *bio_s_out=NULL;
 254 static int s_debug=0;
 255 static int s_msg=0;
 256 static int s_quiet=0;
 257
 258 static int hack=0;
 259 #ifndef OPENSSL_NO_ENGINE
 260 static char *engine_id=NULL;
 261 #endif
 262 static const char *session_id_prefix=NULL;
 263
 264 static int enable_timeouts = 0;
 265 static long mtu;
 266 static int cert_chain = 0;
 267
 268
 269 #ifdef MONOLITH
 270 static void s_server_init(void)
 271         {
 272         accept_socket=-1;
 273         cipher=NULL;
 274         s_server_verify=SSL_VERIFY_NONE;
 275         s_dcert_file=NULL;
 276         s_dkey_file=NULL;
 277         s_cert_file=TEST_CERT;
 278         s_key_file=NULL;
 279 #ifdef FIONBIO
 280         s_nbio=0;
 281 #endif
 282         s_nbio_test=0;
 283         ctx=NULL;
 284         www=0;
 285
 286         bio_s_out=NULL;
 287         s_debug=0;
 288         s_msg=0;
 289         s_quiet=0;
 290         hack=0;
 291 #ifndef OPENSSL_NO_ENGINE
 292         engine_id=NULL;
 293 #endif
 294         }
 295 #endif
 296
 297 static void sv_usage(void)
 298         {
 299         BIO_printf(bio_err,"usage: s_server [args ...]\n");
 300         BIO_printf(bio_err,"\n");
 301         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
 302         BIO_printf(bio_err," -context arg  - set session ID context\n");
 303         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 304         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
 305         BIO_printf(bio_err," -cert arg     - certificate file to use\n");
 306         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
 307         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
 308         BIO_printf(bio_err," -key arg      - Private Key file to use, in cert file if\n");
 309         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
 310         BIO_printf(bio_err," -keyform arg  - key format (PEM, DER or ENGINE) PEM default\n");
 311         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
 312         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
 313         BIO_printf(bio_err," -dcertform x  - second certificate format (PEM or DER) PEM default\n");
 314         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
 315         BIO_printf(bio_err," -dkeyform arg - second key format (PEM, DER or ENGINE) PEM default\n");
 316         BIO_printf(bio_err," -dpass arg    - second private key file pass phrase source\n");
 317         BIO_printf(bio_err," -dhparam arg  - DH parameter file to use, in cert file if not specified\n");
 318         BIO_printf(bio_err,"                 or a default set of parameters is used\n");
 319 #ifndef OPENSSL_NO_ECDH
 320         BIO_printf(bio_err," -named_curve arg  - Elliptic curve name to use for ephemeral ECDH keys.\n" \
 321                            "                 Use \"openssl ecparam -list_curves\" for all names\n" \
 322                            "                 (default is sect163r2).\n");
 323 #endif
 324 #ifdef FIONBIO
 325         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 326 #endif
 327         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
 328         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 329         BIO_printf(bio_err," -debug        - Print more output\n");
 330         BIO_printf(bio_err," -msg          - Show protocol messages\n");
 331         BIO_printf(bio_err," -state        - Print the SSL states\n");
 332         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 333         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 334         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
 335         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
 336         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences\n");
 337         BIO_printf(bio_err," -quiet        - No server output\n");
 338         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
 339         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
 340         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
 341         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
 342         BIO_printf(bio_err," -dtls1        - Just talk DTLSv1\n");
 343         BIO_printf(bio_err," -timeout      - Enable timeouts\n");
 344         BIO_printf(bio_err," -mtu          - Set MTU\n");
 345         BIO_printf(bio_err," -chain        - Read a certificate chain\n");
 346         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
 347         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
 348         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
 349 #ifndef OPENSSL_NO_DH
 350         BIO_printf(bio_err," -no_dhe       - Disable ephemeral DH\n");
 351 #endif
 352 #ifndef OPENSSL_NO_ECDH
 353         BIO_printf(bio_err," -no_ecdhe     - Disable ephemeral ECDH\n");
 354 #endif
 355         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");
 356         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
 357         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
 358         BIO_printf(bio_err," -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
 359         BIO_printf(bio_err,"                 with the assumption it contains a complete HTTP response.\n");
 360 #ifndef OPENSSL_NO_ENGINE
 361         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 362 #endif
 363         BIO_printf(bio_err," -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");
 364         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 365         }
 366
 367 static int local_argc=0;
 368 static char **local_argv;
 369
 370 #ifdef CHARSET_EBCDIC
 371 static int ebcdic_new(BIO *bi);
 372 static int ebcdic_free(BIO *a);
 373 static int ebcdic_read(BIO *b, char *out, int outl);
 374 static int ebcdic_write(BIO *b, const char *in, int inl);
 375 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr);
 376 static int ebcdic_gets(BIO *bp, char *buf, int size);
 377 static int ebcdic_puts(BIO *bp, const char *str);
 378
 379 #define BIO_TYPE_EBCDIC_FILTER  (18|0x0200)
 380 static BIO_METHOD methods_ebcdic=
 381         {
 382         BIO_TYPE_EBCDIC_FILTER,
 383         "EBCDIC/ASCII filter",
 384         ebcdic_write,
 385         ebcdic_read,
 386         ebcdic_puts,
 387         ebcdic_gets,
 388         ebcdic_ctrl,
 389         ebcdic_new,
 390         ebcdic_free,
 391         };
 392
 393 typedef struct
 394 {
 395         size_t  alloced;
 396         char    buff[1];
 397 } EBCDIC_OUTBUFF;
 398
 399 BIO_METHOD *BIO_f_ebcdic_filter()
 400 {
 401         return(&methods_ebcdic);
 402 }
 403
 404 static int ebcdic_new(BIO *bi)
 405 {
 406         EBCDIC_OUTBUFF *wbuf;
 407
 408         wbuf = (EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);
 409         wbuf->alloced = 1024;
 410         wbuf->buff[0] = '\0';
 411
 412         bi->ptr=(char *)wbuf;
 413         bi->init=1;
 414         bi->flags=0;
 415         return(1);
 416 }
 417
 418 static int ebcdic_free(BIO *a)
 419 {
 420         if (a == NULL) return(0);
 421         if (a->ptr != NULL)
 422                 OPENSSL_free(a->ptr);
 423         a->ptr=NULL;
 424         a->init=0;
 425         a->flags=0;
 426         return(1);
 427 }
 428
 429 static int ebcdic_read(BIO *b, char *out, int outl)
 430 {
 431         int ret=0;
 432
 433         if (out == NULL || outl == 0) return(0);
 434         if (b->next_bio == NULL) return(0);
 435
 436         ret=BIO_read(b->next_bio,out,outl);
 437         if (ret > 0)
 438                 ascii2ebcdic(out,out,ret);
 439         return(ret);
 440 }
 441
 442 static int ebcdic_write(BIO *b, const char *in, int inl)
 443 {
 444         EBCDIC_OUTBUFF *wbuf;
 445         int ret=0;
 446         int num;
 447         unsigned char n;
 448
 449         if ((in == NULL) || (inl <= 0)) return(0);
 450         if (b->next_bio == NULL) return(0);
 451
 452         wbuf=(EBCDIC_OUTBUFF *)b->ptr;
 453
 454         if (inl > (num = wbuf->alloced))
 455         {
 456                 num = num + num;  /* double the size */
 457                 if (num < inl)
 458                         num = inl;
 459                 OPENSSL_free(wbuf);
 460                 wbuf=(EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);
 461
 462                 wbuf->alloced = num;
 463                 wbuf->buff[0] = '\0';
 464
 465                 b->ptr=(char *)wbuf;
 466         }
 467
 468         ebcdic2ascii(wbuf->buff, in, inl);
 469
 470         ret=BIO_write(b->next_bio, wbuf->buff, inl);
 471
 472         return(ret);
 473 }
 474
 475 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr)
 476 {
 477         long ret;
 478
 479         if (b->next_bio == NULL) return(0);
 480         switch (cmd)
 481         {
 482         case BIO_CTRL_DUP:
 483                 ret=0L;
 484                 break;
 485         default:
 486                 ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
 487                 break;
 488         }
 489         return(ret);
 490 }
 491
 492 static int ebcdic_gets(BIO *bp, char *buf, int size)
 493 {
 494         int i, ret=0;
 495         if (bp->next_bio == NULL) return(0);
 496 /*      return(BIO_gets(bp->next_bio,buf,size));*/
 497         for (i=0; i<size-1; ++i)
 498         {
 499                 ret = ebcdic_read(bp,&buf[i],1);
 500                 if (ret <= 0)
 501                         break;
 502                 else if (buf[i] == '\n')
 503                 {
 504                         ++i;
 505                         break;
 506                 }
 507         }
 508         if (i < size)
 509                 buf[i] = '\0';
 510         return (ret < 0 && i == 0) ? ret : i;
 511 }
 512
 513 static int ebcdic_puts(BIO *bp, const char *str)
 514 {
 515         if (bp->next_bio == NULL) return(0);
 516         return ebcdic_write(bp, str, strlen(str));
 517 }
 518 #endif
 519
 520 int MAIN(int, char **);
 521
 522 int MAIN(int argc, char *argv[])
 523         {
 524         X509_STORE *store = NULL;
 525         int vflags = 0;
 526         short port=PORT;
 527         char *CApath=NULL,*CAfile=NULL;
 528         unsigned char *context = NULL;
 529         char *dhfile = NULL;
 530         char *named_curve = NULL;
 531         int badop=0,bugs=0;
 532         int ret=1;
 533         int off=0;
 534         int no_tmp_rsa=0,no_dhe=0,no_ecdhe=0,nocert=0;
 535         int state=0;
 536         SSL_METHOD *meth=NULL;
 537     int sock_type=SOCK_STREAM;
 538 #ifndef OPENSSL_NO_ENGINE
 539         ENGINE *e=NULL;
 540 #endif
 541         char *inrand=NULL;
 542         int s_cert_format = FORMAT_PEM, s_key_format = FORMAT_PEM;
 543         char *passarg = NULL, *pass = NULL;
 544         char *dpassarg = NULL, *dpass = NULL;
 545         int s_dcert_format = FORMAT_PEM, s_dkey_format = FORMAT_PEM;
 546         X509 *s_cert = NULL, *s_dcert = NULL;
 547         EVP_PKEY *s_key = NULL, *s_dkey = NULL;
 548
 549 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 550         meth=SSLv23_server_method();
 551 #elif !defined(OPENSSL_NO_SSL3)
 552         meth=SSLv3_server_method();
 553 #elif !defined(OPENSSL_NO_SSL2)
 554         meth=SSLv2_server_method();
 555 #endif
 556
 557         local_argc=argc;
 558         local_argv=argv;
 559
 560         apps_startup();
 561 #ifdef MONOLITH
 562         s_server_init();
 563 #endif
 564
 565         if (bio_err == NULL)
 566                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 567
 568         if (!load_config(bio_err, NULL))
 569                 goto end;
 570
 571         verify_depth=0;
 572 #ifdef FIONBIO
 573         s_nbio=0;
 574 #endif
 575         s_nbio_test=0;
 576
 577         argc--;
 578         argv++;
 579
 580         while (argc >= 1)
 581                 {
 582                 if      ((strcmp(*argv,"-port") == 0) ||
 583                          (strcmp(*argv,"-accept") == 0))
 584                         {
 585                         if (--argc < 1) goto bad;
 586                         if (!extract_port(*(++argv),&port))
 587                                 goto bad;
 588                         }
 589                 else if (strcmp(*argv,"-verify") == 0)
 590                         {
 591                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 592                         if (--argc < 1) goto bad;
 593                         verify_depth=atoi(*(++argv));
 594                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 595                         }
 596                 else if (strcmp(*argv,"-Verify") == 0)
 597                         {
 598                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
 599                                 SSL_VERIFY_CLIENT_ONCE;
 600                         if (--argc < 1) goto bad;
 601                         verify_depth=atoi(*(++argv));
 602                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
 603                         }
 604                 else if (strcmp(*argv,"-context") == 0)
 605                         {
 606                         if (--argc < 1) goto bad;
 607                         context= (unsigned char *)*(++argv);
 608                         }
 609                 else if (strcmp(*argv,"-cert") == 0)
 610                         {
 611                         if (--argc < 1) goto bad;
 612                         s_cert_file= *(++argv);
 613                         }
 614                 else if (strcmp(*argv,"-certform") == 0)
 615                         {
 616                         if (--argc < 1) goto bad;
 617                         s_cert_format = str2fmt(*(++argv));
 618                         }
 619                 else if (strcmp(*argv,"-key") == 0)
 620                         {
 621                         if (--argc < 1) goto bad;
 622                         s_key_file= *(++argv);
 623                         }
 624                 else if (strcmp(*argv,"-keyform") == 0)
 625                         {
 626                         if (--argc < 1) goto bad;
 627                         s_key_format = str2fmt(*(++argv));
 628                         }
 629                 else if (strcmp(*argv,"-pass") == 0)
 630                         {
 631                         if (--argc < 1) goto bad;
 632                         passarg = *(++argv);
 633                         }
 634                 else if (strcmp(*argv,"-dhparam") == 0)
 635                         {
 636                         if (--argc < 1) goto bad;
 637                         dhfile = *(++argv);
 638                         }
 639 #ifndef OPENSSL_NO_ECDH
 640                 else if (strcmp(*argv,"-named_curve") == 0)
 641                         {
 642                         if (--argc < 1) goto bad;
 643                         named_curve = *(++argv);
 644                         }
 645 #endif
 646                 else if (strcmp(*argv,"-dcertform") == 0)
 647                         {
 648                         if (--argc < 1) goto bad;
 649                         s_dcert_format = str2fmt(*(++argv));
 650                         }
 651                 else if (strcmp(*argv,"-dcert") == 0)
 652                         {
 653                         if (--argc < 1) goto bad;
 654                         s_dcert_file= *(++argv);
 655                         }
 656                 else if (strcmp(*argv,"-dkeyform") == 0)
 657                         {
 658                         if (--argc < 1) goto bad;
 659                         s_dkey_format = str2fmt(*(++argv));
 660                         }
 661                 else if (strcmp(*argv,"-dpass") == 0)
 662                         {
 663                         if (--argc < 1) goto bad;
 664                         dpassarg = *(++argv);
 665                         }
 666                 else if (strcmp(*argv,"-dkey") == 0)
 667                         {
 668                         if (--argc < 1) goto bad;
 669                         s_dkey_file= *(++argv);
 670                         }
 671                 else if (strcmp(*argv,"-nocert") == 0)
 672                         {
 673                         nocert=1;
 674                         }
 675                 else if (strcmp(*argv,"-CApath") == 0)
 676                         {
 677                         if (--argc < 1) goto bad;
 678                         CApath= *(++argv);
 679                         }
 680                 else if (strcmp(*argv,"-crl_check") == 0)
 681                         {
 682                         vflags |= X509_V_FLAG_CRL_CHECK;
 683                         }
 684                 else if (strcmp(*argv,"-crl_check") == 0)
 685                         {
 686                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
 687                         }
 688                 else if (strcmp(*argv,"-serverpref") == 0)
 689                         { off|=SSL_OP_CIPHER_SERVER_PREFERENCE; }
 690                 else if (strcmp(*argv,"-cipher") == 0)
 691                         {
 692                         if (--argc < 1) goto bad;
 693                         cipher= *(++argv);
 694                         }
 695                 else if (strcmp(*argv,"-CAfile") == 0)
 696                         {
 697                         if (--argc < 1) goto bad;
 698                         CAfile= *(++argv);
 699                         }
 700 #ifdef FIONBIO
 701                 else if (strcmp(*argv,"-nbio") == 0)
 702                         { s_nbio=1; }
 703 #endif
 704                 else if (strcmp(*argv,"-nbio_test") == 0)
 705                         {
 706 #ifdef FIONBIO
 707                         s_nbio=1;
 708 #endif
 709                         s_nbio_test=1;
 710                         }
 711                 else if (strcmp(*argv,"-debug") == 0)
 712                         { s_debug=1; }
 713                 else if (strcmp(*argv,"-msg") == 0)
 714                         { s_msg=1; }
 715                 else if (strcmp(*argv,"-hack") == 0)
 716                         { hack=1; }
 717                 else if (strcmp(*argv,"-state") == 0)
 718                         { state=1; }
 719                 else if (strcmp(*argv,"-crlf") == 0)
 720                         { s_crlf=1; }
 721                 else if (strcmp(*argv,"-quiet") == 0)
 722                         { s_quiet=1; }
 723                 else if (strcmp(*argv,"-bugs") == 0)
 724                         { bugs=1; }
 725                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
 726                         { no_tmp_rsa=1; }
 727                 else if (strcmp(*argv,"-no_dhe") == 0)
 728                         { no_dhe=1; }
 729                 else if (strcmp(*argv,"-no_ecdhe") == 0)
 730                         { no_ecdhe=1; }
 731                 else if (strcmp(*argv,"-www") == 0)
 732                         { www=1; }
 733                 else if (strcmp(*argv,"-WWW") == 0)
 734                         { www=2; }
 735                 else if (strcmp(*argv,"-HTTP") == 0)
 736                         { www=3; }
 737                 else if (strcmp(*argv,"-no_ssl2") == 0)
 738                         { off|=SSL_OP_NO_SSLv2; }
 739                 else if (strcmp(*argv,"-no_ssl3") == 0)
 740                         { off|=SSL_OP_NO_SSLv3; }
 741                 else if (strcmp(*argv,"-no_tls1") == 0)
 742                         { off|=SSL_OP_NO_TLSv1; }
 743 #ifndef OPENSSL_NO_SSL2
 744                 else if (strcmp(*argv,"-ssl2") == 0)
 745                         { meth=SSLv2_server_method(); }
 746 #endif
 747 #ifndef OPENSSL_NO_SSL3
 748                 else if (strcmp(*argv,"-ssl3") == 0)
 749                         { meth=SSLv3_server_method(); }
 750 #endif
 751 #ifndef OPENSSL_NO_TLS1
 752                 else if (strcmp(*argv,"-tls1") == 0)
 753                         { meth=TLSv1_server_method(); }
 754 #endif
 755 #ifndef OPENSSL_NO_DTLS1
 756                 else if (strcmp(*argv,"-dtls1") == 0)
 757                         {
 758                         meth=DTLSv1_server_method();
 759                         sock_type = SOCK_DGRAM;
 760                         }
 761                 else if (strcmp(*argv,"-timeout") == 0)
 762                         enable_timeouts = 1;
 763                 else if (strcmp(*argv,"-mtu") == 0)
 764                         {
 765                         if (--argc < 1) goto bad;
 766                         mtu = atol(*(++argv));
 767                         }
 768                 else if (strcmp(*argv, "-chain") == 0)
 769                         cert_chain = 1;
 770 #endif
 771                 else if (strcmp(*argv, "-id_prefix") == 0)
 772                         {
 773                         if (--argc < 1) goto bad;
 774                         session_id_prefix = *(++argv);
 775                         }
 776 #ifndef OPENSSL_NO_ENGINE
 777                 else if (strcmp(*argv,"-engine") == 0)
 778                         {
 779                         if (--argc < 1) goto bad;
 780                         engine_id= *(++argv);
 781                         }
 782 #endif
 783                 else if (strcmp(*argv,"-rand") == 0)
 784                         {
 785                         if (--argc < 1) goto bad;
 786                         inrand= *(++argv);
 787                         }
 788                 else
 789                         {
 790                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 791                         badop=1;
 792                         break;
 793                         }
 794                 argc--;
 795                 argv++;
 796                 }
 797         if (badop)
 798                 {
 799 bad:
 800                 sv_usage();
 801                 goto end;
 802                 }
 803
 804         SSL_load_error_strings();
 805         OpenSSL_add_ssl_algorithms();
 806
 807 #ifndef OPENSSL_NO_ENGINE
 808         e = setup_engine(bio_err, engine_id, 1);
 809 #endif
 810
 811         if (!app_passwd(bio_err, passarg, dpassarg, &pass, &dpass))
 812                 {
 813                 BIO_printf(bio_err, "Error getting password\n");
 814                 goto end;
 815                 }
 816
 817
 818         if (s_key_file == NULL)
 819                 s_key_file = s_cert_file;
 820
 821         s_key = load_key(bio_err, s_key_file, s_key_format, 0, pass, e,
 822                        "server certificate private key file");
 823         if (!s_key)
 824                 {
 825                 ERR_print_errors(bio_err);
 826                 goto end;
 827                 }
 828
 829         s_cert = load_cert(bio_err,s_cert_file,s_cert_format,
 830                         NULL, e, "server certificate file");
 831
 832         if (!s_cert)
 833                 {
 834                 ERR_print_errors(bio_err);
 835                 goto end;
 836                 }
 837
 838         if (s_dcert_file)
 839                 {
 840
 841                 if (s_dkey_file == NULL)
 842                         s_dkey_file = s_dcert_file;
 843
 844                 s_dkey = load_key(bio_err, s_dkey_file, s_dkey_format,
 845                                 0, dpass, e,
 846                                "second certificate private key file");
 847                 if (!s_dkey)
 848                         {
 849                         ERR_print_errors(bio_err);
 850                         goto end;
 851                         }
 852
 853                 s_dcert = load_cert(bio_err,s_dcert_file,s_dcert_format,
 854                                 NULL, e, "second server certificate file");
 855
 856                 if (!s_dcert)
 857                         {
 858                         ERR_print_errors(bio_err);
 859                         goto end;
 860                         }
 861
 862                 }
 863
 864         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
 865                 && !RAND_status())
 866                 {
 867                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 868                 }
 869         if (inrand != NULL)
 870                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 871                         app_RAND_load_files(inrand));
 872
 873         if (bio_s_out == NULL)
 874                 {
 875                 if (s_quiet && !s_debug && !s_msg)
 876                         {
 877                         bio_s_out=BIO_new(BIO_s_null());
 878                         }
 879                 else
 880                         {
 881                         if (bio_s_out == NULL)
 882                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 883                         }
 884                 }
 885
 886 #if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
 887         if (nocert)
 888 #endif
 889                 {
 890                 s_cert_file=NULL;
 891                 s_key_file=NULL;
 892                 s_dcert_file=NULL;
 893                 s_dkey_file=NULL;
 894                 }
 895
 896         ctx=SSL_CTX_new(meth);
 897         if (ctx == NULL)
 898                 {
 899                 ERR_print_errors(bio_err);
 900                 goto end;
 901                 }
 902         if (session_id_prefix)
 903                 {
 904                 if(strlen(session_id_prefix) >= 32)
 905                         BIO_printf(bio_err,
 906 "warning: id_prefix is too long, only one new session will be possible\n");
 907                 else if(strlen(session_id_prefix) >= 16)
 908                         BIO_printf(bio_err,
 909 "warning: id_prefix is too long if you use SSLv2\n");
 910                 if(!SSL_CTX_set_generate_session_id(ctx, generate_session_id))
 911                         {
 912                         BIO_printf(bio_err,"error setting 'id_prefix'\n");
 913                         ERR_print_errors(bio_err);
 914                         goto end;
 915                         }
 916                 BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
 917                 }
 918         SSL_CTX_set_quiet_shutdown(ctx,1);
 919         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
 920         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
 921         SSL_CTX_set_options(ctx,off);
 922         /* DTLS: partial reads end up discarding unread UDP bytes :-(
 923          * Setting read ahead solves this problem.
 924          */
 925         if (sock_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
 926
 927         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 928
 929         SSL_CTX_sess_set_cache_size(ctx,128);
 930
 931 #if 0
 932         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
 933 #endif
 934
 935 #if 0
 936         if (s_cert_file == NULL)
 937                 {
 938                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
 939                 goto end;
 940                 }
 941 #endif
 942
 943         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 944                 (!SSL_CTX_set_default_verify_paths(ctx)))
 945                 {
 946                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
 947                 ERR_print_errors(bio_err);
 948                 /* goto end; */
 949                 }
 950         store = SSL_CTX_get_cert_store(ctx);
 951         X509_STORE_set_flags(store, vflags);
 952
 953 #ifndef OPENSSL_NO_DH
 954         if (!no_dhe)
 955                 {
 956                 DH *dh=NULL;
 957
 958                 if (dhfile)
 959                         dh = load_dh_param(dhfile);
 960                 else if (s_cert_file)
 961                         dh = load_dh_param(s_cert_file);
 962
 963                 if (dh != NULL)
 964                         {
 965                         BIO_printf(bio_s_out,"Setting temp DH parameters\n");
 966                         }
 967                 else
 968                         {
 969                         BIO_printf(bio_s_out,"Using default temp DH parameters\n");
 970                         dh=get_dh512();
 971                         }
 972                 (void)BIO_flush(bio_s_out);
 973
 974                 SSL_CTX_set_tmp_dh(ctx,dh);
 975                 DH_free(dh);
 976                 }
 977 #endif
 978
 979 #ifndef OPENSSL_NO_ECDH
 980         if (!no_ecdhe)
 981                 {
 982                 EC_KEY *ecdh=NULL;
 983
 984                 ecdh = EC_KEY_new();
 985                 if (ecdh == NULL)
 986                         {
 987                         BIO_printf(bio_err,"Could not create ECDH struct.\n");
 988                         goto end;
 989                         }
 990
 991                 if (named_curve)
 992                         {
 993                         int nid = OBJ_sn2nid(named_curve);
 994
 995                         if (nid == 0)
 996                                 {
 997                                 BIO_printf(bio_err, "unknown curve name (%s)\n",
 998                                         named_curve);
 999                                 goto end;
1000                                 }
1001
1002                         ecdh->group = EC_GROUP_new_by_curve_name(nid);
1003                         if (ecdh->group == NULL)
1004                                 {
1005                                 BIO_printf(bio_err, "unable to create curve (%s)\n",
1006                                         named_curve);
1007                                 goto end;
1008                                 }
1009                         }
1010
1011                 if (ecdh->group != NULL)
1012                         {
1013                         BIO_printf(bio_s_out,"Setting temp ECDH parameters\n");
1014                         }
1015                 else
1016                         {
1017                         BIO_printf(bio_s_out,"Using default temp ECDH parameters\n");
1018                         ecdh->group=EC_GROUP_new_by_curve_name(NID_sect163r2);
1019                         if (ecdh->group == NULL)
1020                                 {
1021                                 BIO_printf(bio_err, "unable to create curve (sect163r2)\n");
1022                                 goto end;
1023                                 }
1024                         }
1025                 (void)BIO_flush(bio_s_out);
1026
1027                 SSL_CTX_set_tmp_ecdh(ctx,ecdh);
1028                 EC_KEY_free(ecdh);
1029                 }
1030 #endif
1031
1032         if (!set_cert_key_stuff(ctx,s_cert,s_key))
1033                 goto end;
1034         if (s_dcert != NULL)
1035                 {
1036                 if (!set_cert_key_stuff(ctx,s_dcert,s_dkey))
1037                         goto end;
1038                 }
1039
1040 #ifndef OPENSSL_NO_RSA
1041 #if 1
1042         if (!no_tmp_rsa)
1043                 SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
1044 #else
1045         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
1046                 {
1047                 RSA *rsa;
1048
1049                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
1050                 BIO_flush(bio_s_out);
1051
1052                 rsa=RSA_generate_key(512,RSA_F4,NULL);
1053
1054                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
1055                         {
1056                         ERR_print_errors(bio_err);
1057                         goto end;
1058                         }
1059                 RSA_free(rsa);
1060                 BIO_printf(bio_s_out,"\n");
1061                 }
1062 #endif
1063 #endif
1064
1065         if (cipher != NULL)
1066                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
1067                 BIO_printf(bio_err,"error setting cipher list\n");
1068                 ERR_print_errors(bio_err);
1069                 goto end;
1070         }
1071         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
1072         SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,
1073                 sizeof s_server_session_id_context);
1074
1075         if (CAfile != NULL)
1076             SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
1077
1078         BIO_printf(bio_s_out,"ACCEPT\n");
1079         if (www)
1080                 do_server(port,sock_type,&accept_socket,www_body, context);
1081         else
1082                 do_server(port,sock_type,&accept_socket,sv_body, context);
1083         print_stats(bio_s_out,ctx);
1084         ret=0;
1085 end:
1086         if (ctx != NULL) SSL_CTX_free(ctx);
1087         if (s_cert)
1088                 X509_free(s_cert);
1089         if (s_dcert)
1090                 X509_free(s_dcert);
1091         if (s_key)
1092                 EVP_PKEY_free(s_key);
1093         if (s_dkey)
1094                 EVP_PKEY_free(s_dkey);
1095         if (pass)
1096                 OPENSSL_free(pass);
1097         if (dpass)
1098                 OPENSSL_free(dpass);
1099         if (bio_s_out != NULL)
1100                 {
1101         BIO_free(bio_s_out);
1102                 bio_s_out=NULL;
1103                 }
1104         apps_shutdown();
1105         OPENSSL_EXIT(ret);
1106         }
1107
1108 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
1109         {
1110         BIO_printf(bio,"%4ld items in the session cache\n",
1111                 SSL_CTX_sess_number(ssl_ctx));
1112         BIO_printf(bio,"%4ld client connects (SSL_connect())\n",
1113                 SSL_CTX_sess_connect(ssl_ctx));
1114         BIO_printf(bio,"%4ld client renegotiates (SSL_connect())\n",
1115                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
1116         BIO_printf(bio,"%4ld client connects that finished\n",
1117                 SSL_CTX_sess_connect_good(ssl_ctx));
1118         BIO_printf(bio,"%4ld server accepts (SSL_accept())\n",
1119                 SSL_CTX_sess_accept(ssl_ctx));
1120         BIO_printf(bio,"%4ld server renegotiates (SSL_accept())\n",
1121                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
1122         BIO_printf(bio,"%4ld server accepts that finished\n",
1123                 SSL_CTX_sess_accept_good(ssl_ctx));
1124         BIO_printf(bio,"%4ld session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
1125         BIO_printf(bio,"%4ld session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
1126         BIO_printf(bio,"%4ld session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
1127         BIO_printf(bio,"%4ld callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
1128         BIO_printf(bio,"%4ld cache full overflows (%ld allowed)\n",
1129                 SSL_CTX_sess_cache_full(ssl_ctx),
1130                 SSL_CTX_sess_get_cache_size(ssl_ctx));
1131         }
1132
1133 static int sv_body(char *hostname, int s, unsigned char *context)
1134         {
1135         char *buf=NULL;
1136         fd_set readfds;
1137         int ret=1,width;
1138         int k,i;
1139         unsigned long l;
1140         SSL *con=NULL;
1141         BIO *sbio;
1142 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
1143         struct timeval tv;
1144 #endif
1145
1146         if ((buf=OPENSSL_malloc(bufsize)) == NULL)
1147                 {
1148                 BIO_printf(bio_err,"out of memory\n");
1149                 goto err;
1150                 }
1151 #ifdef FIONBIO
1152         if (s_nbio)
1153                 {
1154                 unsigned long sl=1;
1155
1156                 if (!s_quiet)
1157                         BIO_printf(bio_err,"turning on non blocking io\n");
1158                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
1159                         ERR_print_errors(bio_err);
1160                 }
1161 #endif
1162
1163         if (con == NULL) {
1164                 con=SSL_new(ctx);
1165 #ifndef OPENSSL_NO_KRB5
1166                 if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
1167                         {
1168                         kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE,
1169                                                                 KRB5SVC);
1170                         kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB,
1171                                                                 KRB5KEYTAB);
1172                         }
1173 #endif  /* OPENSSL_NO_KRB5 */
1174                 if(context)
1175                       SSL_set_session_id_context(con, context,
1176                                                  strlen((char *)context));
1177         }
1178         SSL_clear(con);
1179
1180         if (SSL_version(con) == DTLS1_VERSION)
1181                 {
1182                 struct timeval timeout;
1183
1184                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1185
1186                 if ( enable_timeouts)
1187                         {
1188                         timeout.tv_sec = 0;
1189                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1190                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1191
1192                         timeout.tv_sec = 0;
1193                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1194                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1195                         }
1196
1197
1198                 if ( mtu > 0)
1199                         {
1200                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1201                         SSL_set_mtu(con, mtu);
1202                         }
1203                 else
1204                         /* want to do MTU discovery */
1205                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1206
1207         /* turn on cookie exchange */
1208         SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
1209                 }
1210         else
1211                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1212
1213         if (s_nbio_test)
1214                 {
1215                 BIO *test;
1216
1217                 test=BIO_new(BIO_f_nbio_test());
1218                 sbio=BIO_push(test,sbio);
1219                 }
1220         SSL_set_bio(con,sbio,sbio);
1221         SSL_set_accept_state(con);
1222         /* SSL_set_fd(con,s); */
1223
1224         if (s_debug)
1225                 {
1226                 con->debug=1;
1227                 BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
1228                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
1229                 }
1230         if (s_msg)
1231                 {
1232                 SSL_set_msg_callback(con, msg_cb);
1233                 SSL_set_msg_callback_arg(con, bio_s_out);
1234                 }
1235
1236         width=s+1;
1237         for (;;)
1238                 {
1239                 int read_from_terminal;
1240                 int read_from_sslcon;
1241
1242                 read_from_terminal = 0;
1243                 read_from_sslcon = SSL_pending(con);
1244
1245                 if (!read_from_sslcon)
1246                         {
1247                         FD_ZERO(&readfds);
1248 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)
1249                         FD_SET(fileno(stdin),&readfds);
1250 #endif
1251                         FD_SET(s,&readfds);
1252                         /* Note: under VMS with SOCKETSHR the second parameter is
1253                          * currently of type (int *) whereas under other systems
1254                          * it is (void *) if you don't have a cast it will choke
1255                          * the compiler: if you do have a cast then you can either
1256                          * go for (int *) or (void *).
1257                          */
1258 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
1259                         /* Under DOS (non-djgpp) and Windows we can't select on stdin: only
1260                          * on sockets. As a workaround we timeout the select every
1261                          * second and check for any keypress. In a proper Windows
1262                          * application we wouldn't do this because it is inefficient.
1263                          */
1264                         tv.tv_sec = 1;
1265                         tv.tv_usec = 0;
1266                         i=select(width,(void *)&readfds,NULL,NULL,&tv);
1267                         if((i < 0) || (!i && !_kbhit() ) )continue;
1268                         if(_kbhit())
1269                                 read_from_terminal = 1;
1270 #else
1271                         i=select(width,(void *)&readfds,NULL,NULL,NULL);
1272                         if (i <= 0) continue;
1273                         if (FD_ISSET(fileno(stdin),&readfds))
1274                                 read_from_terminal = 1;
1275 #endif
1276                         if (FD_ISSET(s,&readfds))
1277                                 read_from_sslcon = 1;
1278                         }
1279                 if (read_from_terminal)
1280                         {
1281                         if (s_crlf)
1282                                 {
1283                                 int j, lf_num;
1284
1285                                 i=read(fileno(stdin), buf, bufsize/2);
1286                                 lf_num = 0;
1287                                 /* both loops are skipped when i <= 0 */
1288                                 for (j = 0; j < i; j++)
1289                                         if (buf[j] == '\n')
1290                                                 lf_num++;
1291                                 for (j = i-1; j >= 0; j--)
1292                                         {
1293                                         buf[j+lf_num] = buf[j];
1294                                         if (buf[j] == '\n')
1295                                                 {
1296                                                 lf_num--;
1297                                                 i++;
1298                                                 buf[j+lf_num] = '\r';
1299                                                 }
1300                                         }
1301                                 assert(lf_num == 0);
1302                                 }
1303                         else
1304                                 i=read(fileno(stdin),buf,bufsize);
1305                         if (!s_quiet)
1306                                 {
1307                                 if ((i <= 0) || (buf[0] == 'Q'))
1308                                         {
1309                                         BIO_printf(bio_s_out,"DONE\n");
1310                                         SHUTDOWN(s);
1311                                         close_accept_socket();
1312                                         ret= -11;
1313                                         goto err;
1314                                         }
1315                                 if ((i <= 0) || (buf[0] == 'q'))
1316                                         {
1317                                         BIO_printf(bio_s_out,"DONE\n");
1318                                         if (SSL_version(con) != DTLS1_VERSION)
1319                         SHUTDOWN(s);
1320         /*                              close_accept_socket();
1321                                         ret= -11;*/
1322                                         goto err;
1323                                         }
1324                                 if ((buf[0] == 'r') &&
1325                                         ((buf[1] == '\n') || (buf[1] == '\r')))
1326                                         {
1327                                         SSL_renegotiate(con);
1328                                         i=SSL_do_handshake(con);
1329                                         printf("SSL_do_handshake -> %d\n",i);
1330                                         i=0; /*13; */
1331                                         continue;
1332                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
1333                                         }
1334                                 if ((buf[0] == 'R') &&
1335                                         ((buf[1] == '\n') || (buf[1] == '\r')))
1336                                         {
1337                                         SSL_set_verify(con,
1338                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
1339                                         SSL_renegotiate(con);
1340                                         i=SSL_do_handshake(con);
1341                                         printf("SSL_do_handshake -> %d\n",i);
1342                                         i=0; /* 13; */
1343                                         continue;
1344                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
1345                                         }
1346                                 if (buf[0] == 'P')
1347                                         {
1348                                         static const char *str="Lets print some clear text\n";
1349                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
1350                                         }
1351                                 if (buf[0] == 'S')
1352                                         {
1353                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
1354                                         }
1355                                 }
1356 #ifdef CHARSET_EBCDIC
1357                         ebcdic2ascii(buf,buf,i);
1358 #endif
1359                         l=k=0;
1360                         for (;;)
1361                                 {
1362                                 /* should do a select for the write */
1363 #ifdef RENEG
1364 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
1365 #endif
1366                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
1367                                 switch (SSL_get_error(con,k))
1368                                         {
1369                                 case SSL_ERROR_NONE:
1370                                         break;
1371                                 case SSL_ERROR_WANT_WRITE:
1372                                 case SSL_ERROR_WANT_READ:
1373                                 case SSL_ERROR_WANT_X509_LOOKUP:
1374                                         BIO_printf(bio_s_out,"Write BLOCK\n");
1375                                         break;
1376                                 case SSL_ERROR_SYSCALL:
1377                                 case SSL_ERROR_SSL:
1378                                         BIO_printf(bio_s_out,"ERROR\n");
1379                                         ERR_print_errors(bio_err);
1380                                         ret=1;
1381                                         goto err;
1382                                         /* break; */
1383                                 case SSL_ERROR_ZERO_RETURN:
1384                                         BIO_printf(bio_s_out,"DONE\n");
1385                                         ret=1;
1386                                         goto err;
1387                                         }
1388                                 l+=k;
1389                                 i-=k;
1390                                 if (i <= 0) break;
1391                                 }
1392                         }
1393                 if (read_from_sslcon)
1394                         {
1395                         if (!SSL_is_init_finished(con))
1396                                 {
1397                                 i=init_ssl_connection(con);
1398
1399                                 if (i < 0)
1400                                         {
1401                                         ret=0;
1402                                         goto err;
1403                                         }
1404                                 else if (i == 0)
1405                                         {
1406                                         ret=1;
1407                                         goto err;
1408                                         }
1409                                 }
1410                         else
1411                                 {
1412 again:
1413                                 i=SSL_read(con,(char *)buf,bufsize);
1414                                 switch (SSL_get_error(con,i))
1415                                         {
1416                                 case SSL_ERROR_NONE:
1417 #ifdef CHARSET_EBCDIC
1418                                         ascii2ebcdic(buf,buf,i);
1419 #endif
1420                                         write(fileno(stdout),buf,
1421                                                 (unsigned int)i);
1422                                         if (SSL_pending(con)) goto again;
1423                                         break;
1424                                 case SSL_ERROR_WANT_WRITE:
1425                                 case SSL_ERROR_WANT_READ:
1426                                 case SSL_ERROR_WANT_X509_LOOKUP:
1427                                         BIO_printf(bio_s_out,"Read BLOCK\n");
1428                                         break;
1429                                 case SSL_ERROR_SYSCALL:
1430                                 case SSL_ERROR_SSL:
1431                                         BIO_printf(bio_s_out,"ERROR\n");
1432                                         ERR_print_errors(bio_err);
1433                                         ret=1;
1434                                         goto err;
1435                                 case SSL_ERROR_ZERO_RETURN:
1436                                         BIO_printf(bio_s_out,"DONE\n");
1437                                         ret=1;
1438                                         goto err;
1439                                         }
1440                                 }
1441                         }
1442                 }
1443 err:
1444         BIO_printf(bio_s_out,"shutting down SSL\n");
1445 #if 1
1446         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1447 #else
1448         SSL_shutdown(con);
1449 #endif
1450         if (con != NULL) SSL_free(con);
1451         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
1452         if (buf != NULL)
1453                 {
1454                 OPENSSL_cleanse(buf,bufsize);
1455                 OPENSSL_free(buf);
1456                 }
1457         if (ret >= 0)
1458                 BIO_printf(bio_s_out,"ACCEPT\n");
1459         return(ret);
1460         }
1461
1462 static void close_accept_socket(void)
1463         {
1464         BIO_printf(bio_err,"shutdown accept socket\n");
1465         if (accept_socket >= 0)
1466                 {
1467                 SHUTDOWN2(accept_socket);
1468                 }
1469         }
1470
1471 static int init_ssl_connection(SSL *con)
1472         {
1473         int i;
1474         const char *str;
1475         X509 *peer;
1476         long verify_error;
1477         MS_STATIC char buf[BUFSIZ];
1478
1479         if ((i=SSL_accept(con)) <= 0)
1480                 {
1481                 if (BIO_sock_should_retry(i))
1482                         {
1483                         BIO_printf(bio_s_out,"DELAY\n");
1484                         return(1);
1485                         }
1486
1487                 BIO_printf(bio_err,"ERROR\n");
1488                 verify_error=SSL_get_verify_result(con);
1489                 if (verify_error != X509_V_OK)
1490                         {
1491                         BIO_printf(bio_err,"verify error:%s\n",
1492                                 X509_verify_cert_error_string(verify_error));
1493                         }
1494                 else
1495                         ERR_print_errors(bio_err);
1496                 return(0);
1497                 }
1498
1499         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
1500
1501         peer=SSL_get_peer_certificate(con);
1502         if (peer != NULL)
1503                 {
1504                 BIO_printf(bio_s_out,"Client certificate\n");
1505                 PEM_write_bio_X509(bio_s_out,peer);
1506                 X509_NAME_oneline(X509_get_subject_name(peer),buf,sizeof buf);
1507                 BIO_printf(bio_s_out,"subject=%s\n",buf);
1508                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,sizeof buf);
1509                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
1510                 X509_free(peer);
1511                 }
1512
1513         if (SSL_get_shared_ciphers(con,buf,sizeof buf) != NULL)
1514                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
1515         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
1516         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
1517         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
1518         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
1519                 TLS1_FLAGS_TLS_PADDING_BUG)
1520                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
1521 #ifndef OPENSSL_NO_KRB5
1522         if (con->kssl_ctx->client_princ != NULL)
1523                 {
1524                 BIO_printf(bio_s_out,"Kerberos peer principal is %s\n",
1525                         con->kssl_ctx->client_princ);
1526                 }
1527 #endif /* OPENSSL_NO_KRB5 */
1528         return(1);
1529         }
1530
1531 #ifndef OPENSSL_NO_DH
1532 static DH *load_dh_param(const char *dhfile)
1533         {
1534         DH *ret=NULL;
1535         BIO *bio;
1536
1537         if ((bio=BIO_new_file(dhfile,"r")) == NULL)
1538                 goto err;
1539         ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);
1540 err:
1541         if (bio != NULL) BIO_free(bio);
1542         return(ret);
1543         }
1544 #endif
1545
1546 #if 0
1547 static int load_CA(SSL_CTX *ctx, char *file)
1548         {
1549         FILE *in;
1550         X509 *x=NULL;
1551
1552         if ((in=fopen(file,"r")) == NULL)
1553                 return(0);
1554
1555         for (;;)
1556                 {
1557                 if (PEM_read_X509(in,&x,NULL) == NULL)
1558                         break;
1559                 SSL_CTX_add_client_CA(ctx,x);
1560                 }
1561         if (x != NULL) X509_free(x);
1562         fclose(in);
1563         return(1);
1564         }
1565 #endif
1566
1567 static int www_body(char *hostname, int s, unsigned char *context)
1568         {
1569         char *buf=NULL;
1570         int ret=1;
1571         int i,j,k,blank,dot;
1572         struct stat st_buf;
1573         SSL *con;
1574         SSL_CIPHER *c;
1575         BIO *io,*ssl_bio,*sbio;
1576         long total_bytes;
1577
1578         buf=OPENSSL_malloc(bufsize);
1579         if (buf == NULL) return(0);
1580         io=BIO_new(BIO_f_buffer());
1581         ssl_bio=BIO_new(BIO_f_ssl());
1582         if ((io == NULL) || (ssl_bio == NULL)) goto err;
1583
1584 #ifdef FIONBIO
1585         if (s_nbio)
1586                 {
1587                 unsigned long sl=1;
1588
1589                 if (!s_quiet)
1590                         BIO_printf(bio_err,"turning on non blocking io\n");
1591                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
1592                         ERR_print_errors(bio_err);
1593                 }
1594 #endif
1595
1596         /* lets make the output buffer a reasonable size */
1597         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
1598
1599         if ((con=SSL_new(ctx)) == NULL) goto err;
1600 #ifndef OPENSSL_NO_KRB5
1601         if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
1602                 {
1603                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE, KRB5SVC);
1604                 kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB, KRB5KEYTAB);
1605                 }
1606 #endif  /* OPENSSL_NO_KRB5 */
1607         if(context) SSL_set_session_id_context(con, context,
1608                                                strlen((char *)context));
1609
1610         sbio=BIO_new_socket(s,BIO_NOCLOSE);
1611         if (s_nbio_test)
1612                 {
1613                 BIO *test;
1614
1615                 test=BIO_new(BIO_f_nbio_test());
1616                 sbio=BIO_push(test,sbio);
1617                 }
1618         SSL_set_bio(con,sbio,sbio);
1619         SSL_set_accept_state(con);
1620
1621         /* SSL_set_fd(con,s); */
1622         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
1623         BIO_push(io,ssl_bio);
1624 #ifdef CHARSET_EBCDIC
1625         io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);
1626 #endif
1627
1628         if (s_debug)
1629                 {
1630                 con->debug=1;
1631                 BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
1632                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
1633                 }
1634         if (s_msg)
1635                 {
1636                 SSL_set_msg_callback(con, msg_cb);
1637                 SSL_set_msg_callback_arg(con, bio_s_out);
1638                 }
1639
1640         blank=0;
1641         for (;;)
1642                 {
1643                 if (hack)
1644                         {
1645                         i=SSL_accept(con);
1646
1647                         switch (SSL_get_error(con,i))
1648                                 {
1649                         case SSL_ERROR_NONE:
1650                                 break;
1651                         case SSL_ERROR_WANT_WRITE:
1652                         case SSL_ERROR_WANT_READ:
1653                         case SSL_ERROR_WANT_X509_LOOKUP:
1654                                 continue;
1655                         case SSL_ERROR_SYSCALL:
1656                         case SSL_ERROR_SSL:
1657                         case SSL_ERROR_ZERO_RETURN:
1658                                 ret=1;
1659                                 goto err;
1660                                 /* break; */
1661                                 }
1662
1663                         SSL_renegotiate(con);
1664                         SSL_write(con,NULL,0);
1665                         }
1666
1667                 i=BIO_gets(io,buf,bufsize-1);
1668                 if (i < 0) /* error */
1669                         {
1670                         if (!BIO_should_retry(io))
1671                                 {
1672                                 if (!s_quiet)
1673                                         ERR_print_errors(bio_err);
1674                                 goto err;
1675                                 }
1676                         else
1677                                 {
1678                                 BIO_printf(bio_s_out,"read R BLOCK\n");
1679 #if defined(OPENSSL_SYS_NETWARE)
1680             delay(1000);
1681 #elif !defined(OPENSSL_SYS_MSDOS) && !defined(__DJGPP__)
1682                                 sleep(1);
1683 #endif
1684                                 continue;
1685                                 }
1686                         }
1687                 else if (i == 0) /* end of input */
1688                         {
1689                         ret=1;
1690                         goto end;
1691                         }
1692
1693                 /* else we have data */
1694                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
1695                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
1696                         {
1697                         char *p;
1698                         X509 *peer;
1699                         STACK_OF(SSL_CIPHER) *sk;
1700                         static const char *space="                          ";
1701
1702                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1703                         BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");
1704                         BIO_puts(io,"<pre>\n");
1705 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
1706                         BIO_puts(io,"\n");
1707                         for (i=0; i<local_argc; i++)
1708                                 {
1709                                 BIO_puts(io,local_argv[i]);
1710                                 BIO_write(io," ",1);
1711                                 }
1712                         BIO_puts(io,"\n");
1713
1714                         /* The following is evil and should not really
1715                          * be done */
1716                         BIO_printf(io,"Ciphers supported in s_server binary\n");
1717                         sk=SSL_get_ciphers(con);
1718                         j=sk_SSL_CIPHER_num(sk);
1719                         for (i=0; i<j; i++)
1720                                 {
1721                                 c=sk_SSL_CIPHER_value(sk,i);
1722                                 BIO_printf(io,"%-11s:%-25s",
1723                                         SSL_CIPHER_get_version(c),
1724                                         SSL_CIPHER_get_name(c));
1725                                 if ((((i+1)%2) == 0) && (i+1 != j))
1726                                         BIO_puts(io,"\n");
1727                                 }
1728                         BIO_puts(io,"\n");
1729                         p=SSL_get_shared_ciphers(con,buf,bufsize);
1730                         if (p != NULL)
1731                                 {
1732                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1733                                 j=i=0;
1734                                 while (*p)
1735                                         {
1736                                         if (*p == ':')
1737                                                 {
1738                                                 BIO_write(io,space,26-j);
1739                                                 i++;
1740                                                 j=0;
1741                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1742                                                 }
1743                                         else
1744                                                 {
1745                                                 BIO_write(io,p,1);
1746                                                 j++;
1747                                                 }
1748                                         p++;
1749                                         }
1750                                 BIO_puts(io,"\n");
1751                                 }
1752                         BIO_printf(io,((con->hit)
1753                                 ?"---\nReused, "
1754                                 :"---\nNew, "));
1755                         c=SSL_get_current_cipher(con);
1756                         BIO_printf(io,"%s, Cipher is %s\n",
1757                                 SSL_CIPHER_get_version(c),
1758                                 SSL_CIPHER_get_name(c));
1759                         SSL_SESSION_print(io,SSL_get_session(con));
1760                         BIO_printf(io,"---\n");
1761                         print_stats(io,SSL_get_SSL_CTX(con));
1762                         BIO_printf(io,"---\n");
1763                         peer=SSL_get_peer_certificate(con);
1764                         if (peer != NULL)
1765                                 {
1766                                 BIO_printf(io,"Client certificate\n");
1767                                 X509_print(io,peer);
1768                                 PEM_write_bio_X509(io,peer);
1769                                 }
1770                         else
1771                                 BIO_puts(io,"no client certificate available\n");
1772                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1773                         break;
1774                         }
1775                 else if ((www == 2 || www == 3)
1776                          && (strncmp("GET /",buf,5) == 0))
1777                         {
1778                         BIO *file;
1779                         char *p,*e;
1780                         static const char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1781
1782                         /* skip the '/' */
1783                         p= &(buf[5]);
1784
1785                         dot = 1;
1786                         for (e=p; *e != '\0'; e++)
1787                                 {
1788                                 if (e[0] == ' ')
1789                                         break;
1790
1791                                 switch (dot)
1792                                         {
1793                                 case 1:
1794                                         dot = (e[0] == '.') ? 2 : 0;
1795                                         break;
1796                                 case 2:
1797                                         dot = (e[0] == '.') ? 3 : 0;
1798                                         break;
1799                                 case 3:
1800                                         dot = (e[0] == '/') ? -1 : 0;
1801                                         break;
1802                                         }
1803                                 if (dot == 0)
1804                                         dot = (e[0] == '/') ? 1 : 0;
1805                                 }
1806                         dot = (dot == 3) || (dot == -1); /* filename contains ".." component */
1807
1808                         if (*e == '\0')
1809                                 {
1810                                 BIO_puts(io,text);
1811                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1812                                 break;
1813                                 }
1814                         *e='\0';
1815
1816                         if (dot)
1817                                 {
1818                                 BIO_puts(io,text);
1819                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1820                                 break;
1821                                 }
1822
1823                         if (*p == '/')
1824                                 {
1825                                 BIO_puts(io,text);
1826                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1827                                 break;
1828                                 }
1829
1830 #if 0
1831                         /* append if a directory lookup */
1832                         if (e[-1] == '/')
1833                                 strcat(p,"index.html");
1834 #endif
1835
1836                         /* if a directory, do the index thang */
1837                         if (stat(p,&st_buf) < 0)
1838                                 {
1839                                 BIO_puts(io,text);
1840                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1841                                 ERR_print_errors(io);
1842                                 break;
1843                                 }
1844                         if (S_ISDIR(st_buf.st_mode))
1845                                 {
1846 #if 0 /* must check buffer size */
1847                                 strcat(p,"/index.html");
1848 #else
1849                                 BIO_puts(io,text);
1850                                 BIO_printf(io,"'%s' is a directory\r\n",p);
1851                                 break;
1852 #endif
1853                                 }
1854
1855                         if ((file=BIO_new_file(p,"r")) == NULL)
1856                                 {
1857                                 BIO_puts(io,text);
1858                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1859                                 ERR_print_errors(io);
1860                                 break;
1861                                 }
1862
1863                         if (!s_quiet)
1864                                 BIO_printf(bio_err,"FILE:%s\n",p);
1865
1866                         if (www == 2)
1867                                 {
1868                                 i=strlen(p);
1869                                 if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1870                                         ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1871                                         ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1872                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1873                                 else
1874                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1875                                 }
1876                         /* send the file */
1877                         total_bytes=0;
1878                         for (;;)
1879                                 {
1880                                 i=BIO_read(file,buf,bufsize);
1881                                 if (i <= 0) break;
1882
1883 #ifdef RENEG
1884                                 total_bytes+=i;
1885                                 fprintf(stderr,"%d\n",i);
1886                                 if (total_bytes > 3*1024)
1887                                         {
1888                                         total_bytes=0;
1889                                         fprintf(stderr,"RENEGOTIATE\n");
1890                                         SSL_renegotiate(con);
1891                                         }
1892 #endif
1893
1894                                 for (j=0; j<i; )
1895                                         {
1896 #ifdef RENEG
1897 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1898 #endif
1899                                         k=BIO_write(io,&(buf[j]),i-j);
1900                                         if (k <= 0)
1901                                                 {
1902                                                 if (!BIO_should_retry(io))
1903                                                         goto write_error;
1904                                                 else
1905                                                         {
1906                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1907                                                         }
1908                                                 }
1909                                         else
1910                                                 {
1911                                                 j+=k;
1912                                                 }
1913                                         }
1914                                 }
1915 write_error:
1916                         BIO_free(file);
1917                         break;
1918                         }
1919                 }
1920
1921         for (;;)
1922                 {
1923                 i=(int)BIO_flush(io);
1924                 if (i <= 0)
1925                         {
1926                         if (!BIO_should_retry(io))
1927                                 break;
1928                         }
1929                 else
1930                         break;
1931                 }
1932 end:
1933 #if 1
1934         /* make sure we re-use sessions */
1935         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1936 #else
1937         /* This kills performance */
1938 /*      SSL_shutdown(con); A shutdown gets sent in the
1939  *      BIO_free_all(io) procession */
1940 #endif
1941
1942 err:
1943
1944         if (ret >= 0)
1945                 BIO_printf(bio_s_out,"ACCEPT\n");
1946
1947         if (buf != NULL) OPENSSL_free(buf);
1948         if (io != NULL) BIO_free_all(io);
1949 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1950         return(ret);
1951         }
1952
1953 #ifndef OPENSSL_NO_RSA
1954 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
1955         {
1956         BIGNUM *bn = NULL;
1957         static RSA *rsa_tmp=NULL;
1958
1959         if (!rsa_tmp && ((bn = BN_new()) == NULL))
1960                 BIO_printf(bio_err,"Allocation error in generating RSA key\n");
1961         if (!rsa_tmp && bn)
1962                 {
1963                 if (!s_quiet)
1964                         {
1965                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1966                         (void)BIO_flush(bio_err);
1967                         }
1968                 if(!BN_set_word(bn, RSA_F4) || ((rsa_tmp = RSA_new()) == NULL) ||
1969                                 !RSA_generate_key_ex(rsa_tmp, keylength, bn, NULL))
1970                         {
1971                         if(rsa_tmp) RSA_free(rsa_tmp);
1972                         rsa_tmp = NULL;
1973                         }
1974                 if (!s_quiet)
1975                         {
1976                         BIO_printf(bio_err,"\n");
1977                         (void)BIO_flush(bio_err);
1978                         }
1979                 BN_free(bn);
1980                 }
1981         return(rsa_tmp);
1982         }
1983 #endif
1984
1985 #define MAX_SESSION_ID_ATTEMPTS 10
1986 static int generate_session_id(const SSL *ssl, unsigned char *id,
1987                                 unsigned int *id_len)
1988         {
1989         unsigned int count = 0;
1990         do      {
1991                 RAND_pseudo_bytes(id, *id_len);
1992                 /* Prefix the session_id with the required prefix. NB: If our
1993                  * prefix is too long, clip it - but there will be worse effects
1994                  * anyway, eg. the server could only possibly create 1 session
1995                  * ID (ie. the prefix!) so all future session negotiations will
1996                  * fail due to conflicts. */
1997                 memcpy(id, session_id_prefix,
1998                         (strlen(session_id_prefix) < *id_len) ?
1999                         strlen(session_id_prefix) : *id_len);
2000                 }
2001         while(SSL_has_matching_session_id(ssl, id, *id_len) &&
2002                 (++count < MAX_SESSION_ID_ATTEMPTS));
2003         if(count >= MAX_SESSION_ID_ATTEMPTS)
2004                 return 0;
2005         return 1;
2006         }