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 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #include <sys/types.h>
  63 #include <sys/stat.h>
  64 #ifdef NO_STDIO
  65 #define APPS_WIN16
  66 #endif
  67 #include "lhash.h"
  68 #include "bn.h"
  69 #define USE_SOCKETS
  70 #include "apps.h"
  71 #include "err.h"
  72 #include "pem.h"
  73 #include "x509.h"
  74 #include "ssl.h"
  75 #include "s_apps.h"
  76
  77 #ifndef NOPROTO
  78 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export);
  79 static int sv_body(char *hostname, int s);
  80 static int www_body(char *hostname, int s);
  81 static void close_accept_socket(void );
  82 static void sv_usage(void);
  83 static int init_ssl_connection(SSL *s);
  84 static void print_stats(BIO *bp,SSL_CTX *ctx);
  85 #ifndef NO_DH
  86 static DH *load_dh_param(void );
  87 static DH *get_dh512(void);
  88 #endif
  89 /* static void s_server_init(void);*/
  90 #else
  91 static RSA MS_CALLBACK *tmp_rsa_cb();
  92 static int sv_body();
  93 static int www_body();
  94 static void close_accept_socket();
  95 static void sv_usage();
  96 static int init_ssl_connection();
  97 static void print_stats();
  98 #ifndef NO_DH
  99 static DH *load_dh_param();
 100 static DH *get_dh512();
 101 #endif
 102 /* static void s_server_init(); */
 103 #endif
 104
 105
 106 #ifndef S_ISDIR
 107 #define S_ISDIR(a)      (((a) & _S_IFMT) == _S_IFDIR)
 108 #endif
 109
 110 #ifndef NO_DH
 111 static unsigned char dh512_p[]={
 112         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
 113         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
 114         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
 115         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
 116         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
 117         0x47,0x74,0xE8,0x33,
 118         };
 119 static unsigned char dh512_g[]={
 120         0x02,
 121         };
 122
 123 static DH *get_dh512()
 124         {
 125         DH *dh=NULL;
 126
 127         if ((dh=DH_new()) == NULL) return(NULL);
 128         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
 129         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
 130         if ((dh->p == NULL) || (dh->g == NULL))
 131                 return(NULL);
 132         return(dh);
 133         }
 134 #endif
 135
 136 /* static int load_CA(SSL_CTX *ctx, char *file);*/
 137
 138 #undef BUFSIZZ
 139 #define BUFSIZZ 8*1024
 140 static int accept_socket= -1;
 141
 142 #define TEST_CERT       "server.pem"
 143 #undef PROG
 144 #define PROG            s_server_main
 145
 146 #define DH_PARAM        "server.pem"
 147
 148 extern int verify_depth;
 149
 150 static char *cipher=NULL;
 151 static int s_server_verify=SSL_VERIFY_NONE;
 152 static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
 153 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
 154 #ifdef FIONBIO
 155 static int s_nbio=0;
 156 #endif
 157 static int s_nbio_test=0;
 158 static SSL_CTX *ctx=NULL;
 159 static int www=0;
 160
 161 static BIO *bio_s_out=NULL;
 162 static int s_debug=0;
 163 static int s_quiet=0;
 164
 165 #if 0
 166 static void s_server_init()
 167         {
 168         cipher=NULL;
 169         s_server_verify=SSL_VERIFY_NONE;
 170         s_dcert_file=NULL;
 171         s_dkey_file=NULL;
 172         s_cert_file=TEST_CERT;
 173         s_key_file=NULL;
 174 #ifdef FIONBIO
 175         s_nbio=0;
 176 #endif
 177         s_nbio_test=0;
 178         ctx=NULL;
 179         www=0;
 180
 181         bio_s_out=NULL;
 182         s_debug=0;
 183         s_quiet=0;
 184         }
 185 #endif
 186
 187 static void sv_usage()
 188         {
 189         BIO_printf(bio_err,"usage: s_server [args ...]\n");
 190         BIO_printf(bio_err,"\n");
 191         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d\n",PORT);
 192         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 193         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
 194         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 195         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
 196         BIO_printf(bio_err," -key arg      - RSA file to use, PEM format assumed, in cert file if\n");
 197         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
 198 #ifdef FIONBIO
 199         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 200 #endif
 201         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
 202         BIO_printf(bio_err," -debug        - Print more output\n");
 203         BIO_printf(bio_err," -state        - Print the SSL states\n");
 204         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 205         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 206         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
 207         BIO_printf(bio_err," -cipher arg   - play with 'ssleay ciphers' to see what goes here\n");
 208         BIO_printf(bio_err," -quiet        - No server output\n");
 209         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
 210         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
 211         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
 212         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
 213         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
 214         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
 215         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
 216         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatability\n");
 217         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
 218         BIO_printf(bio_err," -WWW          - Returns requested page from to a 'GET <path> HTTP/1.0'\n");
 219         }
 220
 221 static int local_argc=0;
 222 static char **local_argv;
 223 static int hack=0;
 224
 225 int MAIN(argc, argv)
 226 int argc;
 227 char *argv[];
 228         {
 229         short port=PORT;
 230         char *CApath=NULL,*CAfile=NULL;
 231         int badop=0,bugs=0;
 232         int ret=1;
 233         int off=0;
 234         int no_tmp_rsa=0,nocert=0;
 235         int state=0;
 236         SSL_METHOD *meth=NULL;
 237 #ifndef NO_DH
 238         DH *dh=NULL;
 239 #endif
 240
 241 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 242         meth=SSLv23_server_method();
 243 #elif !defined(NO_SSL3)
 244         meth=SSLv3_server_method();
 245 #elif !defined(NO_SSL2)
 246         meth=SSLv2_server_method();
 247 #endif
 248
 249         local_argc=argc;
 250         local_argv=argv;
 251
 252         apps_startup();
 253         s_quiet=0;
 254         s_debug=0;
 255
 256         if (bio_err == NULL)
 257                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 258
 259         verify_depth=0;
 260 #ifdef FIONBIO
 261         s_nbio=0;
 262 #endif
 263         s_nbio_test=0;
 264
 265         argc--;
 266         argv++;
 267
 268         while (argc >= 1)
 269                 {
 270                 if      ((strcmp(*argv,"-port") == 0) ||
 271                          (strcmp(*argv,"-accept") == 0))
 272                         {
 273                         if (--argc < 1) goto bad;
 274                         if (!extract_port(*(++argv),&port))
 275                                 goto bad;
 276                         }
 277                 else if (strcmp(*argv,"-verify") == 0)
 278                         {
 279                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 280                         if (--argc < 1) goto bad;
 281                         verify_depth=atoi(*(++argv));
 282                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 283                         }
 284                 else if (strcmp(*argv,"-Verify") == 0)
 285                         {
 286                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
 287                                 SSL_VERIFY_CLIENT_ONCE;
 288                         if (--argc < 1) goto bad;
 289                         verify_depth=atoi(*(++argv));
 290                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
 291                         }
 292                 else if (strcmp(*argv,"-cert") == 0)
 293                         {
 294                         if (--argc < 1) goto bad;
 295                         s_cert_file= *(++argv);
 296                         }
 297                 else if (strcmp(*argv,"-key") == 0)
 298                         {
 299                         if (--argc < 1) goto bad;
 300                         s_key_file= *(++argv);
 301                         }
 302                 else if (strcmp(*argv,"-dcert") == 0)
 303                         {
 304                         if (--argc < 1) goto bad;
 305                         s_dcert_file= *(++argv);
 306                         }
 307                 else if (strcmp(*argv,"-dkey") == 0)
 308                         {
 309                         if (--argc < 1) goto bad;
 310                         s_dkey_file= *(++argv);
 311                         }
 312                 else if (strcmp(*argv,"-nocert") == 0)
 313                         {
 314                         nocert=1;
 315                         }
 316                 else if (strcmp(*argv,"-CApath") == 0)
 317                         {
 318                         if (--argc < 1) goto bad;
 319                         CApath= *(++argv);
 320                         }
 321                 else if (strcmp(*argv,"-cipher") == 0)
 322                         {
 323                         if (--argc < 1) goto bad;
 324                         cipher= *(++argv);
 325                         }
 326                 else if (strcmp(*argv,"-CAfile") == 0)
 327                         {
 328                         if (--argc < 1) goto bad;
 329                         CAfile= *(++argv);
 330                         }
 331 #ifdef FIONBIO
 332                 else if (strcmp(*argv,"-nbio") == 0)
 333                         { s_nbio=1; }
 334 #endif
 335                 else if (strcmp(*argv,"-nbio_test") == 0)
 336                         {
 337 #ifdef FIONBIO
 338                         s_nbio=1;
 339 #endif
 340                         s_nbio_test=1;
 341                         }
 342                 else if (strcmp(*argv,"-debug") == 0)
 343                         { s_debug=1; }
 344                 else if (strcmp(*argv,"-hack") == 0)
 345                         { hack=1; }
 346                 else if (strcmp(*argv,"-state") == 0)
 347                         { state=1; }
 348                 else if (strcmp(*argv,"-quiet") == 0)
 349                         { s_quiet=1; }
 350                 else if (strcmp(*argv,"-bugs") == 0)
 351                         { bugs=1; }
 352                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
 353                         { no_tmp_rsa=1; }
 354                 else if (strcmp(*argv,"-www") == 0)
 355                         { www=1; }
 356                 else if (strcmp(*argv,"-WWW") == 0)
 357                         { www=2; }
 358                 else if (strcmp(*argv,"-no_ssl2") == 0)
 359                         { off|=SSL_OP_NO_SSLv2; }
 360                 else if (strcmp(*argv,"-no_ssl3") == 0)
 361                         { off|=SSL_OP_NO_SSLv3; }
 362                 else if (strcmp(*argv,"-no_tls1") == 0)
 363                         { off|=SSL_OP_NO_TLSv1; }
 364 #ifndef NO_SSL2
 365                 else if (strcmp(*argv,"-ssl2") == 0)
 366                         { meth=SSLv2_server_method(); }
 367 #endif
 368 #ifndef NO_SSL3
 369                 else if (strcmp(*argv,"-ssl3") == 0)
 370                         { meth=SSLv3_server_method(); }
 371 #endif
 372 #ifndef NO_TLS1
 373                 else if (strcmp(*argv,"-tls1") == 0)
 374                         { meth=TLSv1_server_method(); }
 375 #endif
 376                 else
 377                         {
 378                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 379                         badop=1;
 380                         break;
 381                         }
 382                 argc--;
 383                 argv++;
 384                 }
 385         if (badop)
 386                 {
 387 bad:
 388                 sv_usage();
 389                 goto end;
 390                 }
 391
 392         if (bio_s_out == NULL)
 393                 {
 394                 if (s_quiet && !s_debug)
 395                         {
 396                         bio_s_out=BIO_new(BIO_s_null());
 397                         }
 398                 else
 399                         {
 400                         if (bio_s_out == NULL)
 401                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 402                         }
 403                 }
 404
 405 #if !defined(NO_RSA) || !defined(NO_DSA)
 406         if (nocert)
 407 #endif
 408                 {
 409                 s_cert_file=NULL;
 410                 s_key_file=NULL;
 411                 s_dcert_file=NULL;
 412                 s_dkey_file=NULL;
 413                 }
 414
 415         SSL_load_error_strings();
 416         SSLeay_add_ssl_algorithms();
 417
 418         ctx=SSL_CTX_new(meth);
 419         if (ctx == NULL)
 420                 {
 421                 ERR_print_errors(bio_err);
 422                 goto end;
 423                 }
 424
 425         SSL_CTX_set_quiet_shutdown(ctx,1);
 426         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
 427         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
 428         SSL_CTX_set_options(ctx,off);
 429         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);
 430
 431         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 432
 433         SSL_CTX_sess_set_cache_size(ctx,128);
 434
 435 #if 0
 436         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
 437 #endif
 438
 439 #if 0
 440         if (s_cert_file == NULL)
 441                 {
 442                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
 443                 goto end;
 444                 }
 445 #endif
 446
 447         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 448                 (!SSL_CTX_set_default_verify_paths(ctx)))
 449                 {
 450                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
 451                 ERR_print_errors(bio_err);
 452                 /* goto end; */
 453                 }
 454
 455 #ifndef NO_DH
 456         /* EAY EAY EAY evil hack */
 457         dh=load_dh_param();
 458         if (dh != NULL)
 459                 {
 460                 BIO_printf(bio_s_out,"Setting temp DH parameters\n");
 461                 }
 462         else
 463                 {
 464                 BIO_printf(bio_s_out,"Using default temp DH parameters\n");
 465                 dh=get_dh512();
 466                 }
 467         BIO_flush(bio_s_out);
 468
 469         SSL_CTX_set_tmp_dh(ctx,dh);
 470         DH_free(dh);
 471 #endif
 472
 473         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
 474                 goto end;
 475         if (s_dcert_file != NULL)
 476                 {
 477                 if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
 478                         goto end;
 479                 }
 480
 481 #if 1
 482         SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
 483 #else
 484         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
 485                 {
 486                 RSA *rsa;
 487
 488                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
 489                 BIO_flush(bio_s_out);
 490
 491                 rsa=RSA_generate_key(512,RSA_F4,NULL);
 492
 493                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
 494                         {
 495                         ERR_print_errors(bio_err);
 496                         goto end;
 497                         }
 498                 RSA_free(rsa);
 499                 BIO_printf(bio_s_out,"\n");
 500                 }
 501 #endif
 502
 503         if (cipher != NULL)
 504                 SSL_CTX_set_cipher_list(ctx,cipher);
 505         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
 506
 507         SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(s_cert_file));
 508
 509         BIO_printf(bio_s_out,"ACCEPT\n");
 510         if (www)
 511                 do_server(port,&accept_socket,www_body);
 512         else
 513                 do_server(port,&accept_socket,sv_body);
 514         print_stats(bio_s_out,ctx);
 515         ret=0;
 516 end:
 517         if (ctx != NULL) SSL_CTX_free(ctx);
 518         if (bio_s_out != NULL)
 519                 {
 520                 BIO_free(bio_s_out);
 521                 bio_s_out=NULL;
 522                 }
 523         EXIT(ret);
 524         }
 525
 526 static void print_stats(bio,ssl_ctx)
 527 BIO *bio;
 528 SSL_CTX *ssl_ctx;
 529         {
 530         BIO_printf(bio,"%4ld items in the session cache\n",
 531                 SSL_CTX_sess_number(ssl_ctx));
 532         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
 533                 SSL_CTX_sess_connect(ssl_ctx));
 534         BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
 535                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
 536         BIO_printf(bio,"%4d client connects that finished\n",
 537                 SSL_CTX_sess_connect_good(ssl_ctx));
 538         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
 539                 SSL_CTX_sess_accept(ssl_ctx));
 540         BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
 541                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
 542         BIO_printf(bio,"%4d server accepts that finished\n",
 543                 SSL_CTX_sess_accept_good(ssl_ctx));
 544         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
 545         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
 546         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
 547         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
 548         BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
 549                 SSL_CTX_sess_cache_full(ssl_ctx),
 550                 SSL_CTX_sess_get_cache_size(ssl_ctx));
 551         }
 552
 553 static int sv_body(hostname, s)
 554 char *hostname;
 555 int s;
 556         {
 557         char *buf=NULL;
 558         fd_set readfds;
 559         int ret=1,width;
 560         int k,i;
 561         unsigned long l;
 562         SSL *con=NULL;
 563         BIO *sbio;
 564
 565         if ((buf=Malloc(BUFSIZZ)) == NULL)
 566                 {
 567                 BIO_printf(bio_err,"out of memory\n");
 568                 goto err;
 569                 }
 570 #ifdef FIONBIO
 571         if (s_nbio)
 572                 {
 573                 unsigned long sl=1;
 574
 575                 if (!s_quiet)
 576                         BIO_printf(bio_err,"turning on non blocking io\n");
 577                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
 578                         ERR_print_errors(bio_err);
 579                 }
 580 #endif
 581
 582         if (con == NULL)
 583                 con=(SSL *)SSL_new(ctx);
 584         SSL_clear(con);
 585
 586         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 587         if (s_nbio_test)
 588                 {
 589                 BIO *test;
 590
 591                 test=BIO_new(BIO_f_nbio_test());
 592                 sbio=BIO_push(test,sbio);
 593                 }
 594         SSL_set_bio(con,sbio,sbio);
 595         SSL_set_accept_state(con);
 596         /* SSL_set_fd(con,s); */
 597
 598         if (s_debug)
 599                 {
 600                 con->debug=1;
 601                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 602                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 603                 }
 604
 605         width=s+1;
 606         for (;;)
 607                 {
 608                 FD_ZERO(&readfds);
 609 #ifndef WINDOWS
 610                 FD_SET(fileno(stdin),&readfds);
 611 #endif
 612                 FD_SET(s,&readfds);
 613                 i=select(width,&readfds,NULL,NULL,NULL);
 614                 if (i <= 0) continue;
 615                 if (FD_ISSET(fileno(stdin),&readfds))
 616                         {
 617                         i=read(fileno(stdin),buf,128/*BUFSIZZ*/);
 618                         if (!s_quiet)
 619                                 {
 620                                 if ((i <= 0) || (buf[0] == 'Q'))
 621                                         {
 622                                         BIO_printf(bio_s_out,"DONE\n");
 623                                         SHUTDOWN(s);
 624                                         close_accept_socket();
 625                                         ret= -11;
 626                                         goto err;
 627                                         }
 628                                 if ((i <= 0) || (buf[0] == 'q'))
 629                                         {
 630                                         BIO_printf(bio_s_out,"DONE\n");
 631                                         SHUTDOWN(s);
 632         /*                              close_accept_socket();
 633                                         ret= -11;*/
 634                                         goto err;
 635                                         }
 636                                 if ((buf[0] == 'r') &&
 637                                         ((buf[1] == '\n') || (buf[1] == '\r')))
 638                                         {
 639                                         SSL_renegotiate(con);
 640                                         i=SSL_do_handshake(con);
 641                                         printf("SSL_do_handshake -> %d\n",i);
 642                                         i=0; /*13; */
 643                                         continue;
 644                                         strcpy(buf,"server side RE-NEGOTIATE\n");
 645                                         }
 646                                 if ((buf[0] == 'R') &&
 647                                         ((buf[1] == '\0') || (buf[1] == '\r')))
 648                                         {
 649                                         SSL_set_verify(con,
 650                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
 651                                         SSL_renegotiate(con);
 652                                         i=SSL_do_handshake(con);
 653                                         printf("SSL_do_handshake -> %d\n",i);
 654                                         i=0; /* 13; */
 655                                         continue;
 656                                         strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n");
 657                                         }
 658                                 if (buf[0] == 'P')
 659                                         {
 660                                         static char *str="Lets print some clear text\n";
 661                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
 662                                         }
 663                                 if (buf[0] == 'S')
 664                                         {
 665                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
 666                                         }
 667                                 }
 668                         l=k=0;
 669                         for (;;)
 670                                 {
 671                                 /* should do a select for the write */
 672 #ifdef RENEG
 673 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
 674 #endif
 675                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
 676                                 switch (SSL_get_error(con,k))
 677                                         {
 678                                 case SSL_ERROR_NONE:
 679                                         break;
 680                                 case SSL_ERROR_WANT_WRITE:
 681                                 case SSL_ERROR_WANT_READ:
 682                                 case SSL_ERROR_WANT_X509_LOOKUP:
 683                                         BIO_printf(bio_s_out,"Write BLOCK\n");
 684                                         break;
 685                                 case SSL_ERROR_SYSCALL:
 686                                 case SSL_ERROR_SSL:
 687                                         BIO_printf(bio_s_out,"ERROR\n");
 688                                         ERR_print_errors(bio_err);
 689                                         ret=1;
 690                                         goto err;
 691                                         break;
 692                                 case SSL_ERROR_ZERO_RETURN:
 693                                         BIO_printf(bio_s_out,"DONE\n");
 694                                         ret=1;
 695                                         goto err;
 696                                         }
 697                                 l+=k;
 698                                 i-=k;
 699                                 if (i <= 0) break;
 700                                 }
 701                         }
 702                 if (FD_ISSET(s,&readfds))
 703                         {
 704                         if (!SSL_is_init_finished(con))
 705                                 {
 706                                 i=init_ssl_connection(con);
 707
 708                                 if (i < 0)
 709                                         {
 710                                         ret=0;
 711                                         goto err;
 712                                         }
 713                                 else if (i == 0)
 714                                         {
 715                                         ret=1;
 716                                         goto err;
 717                                         }
 718                                 }
 719                         else
 720                                 {
 721                                 i=SSL_read(con,(char *)buf,128 /*BUFSIZZ */);
 722                                 switch (SSL_get_error(con,i))
 723                                         {
 724                                 case SSL_ERROR_NONE:
 725                                         write(fileno(stdout),buf,
 726                                                 (unsigned int)i);
 727                                         break;
 728                                 case SSL_ERROR_WANT_WRITE:
 729                                 case SSL_ERROR_WANT_READ:
 730                                 case SSL_ERROR_WANT_X509_LOOKUP:
 731                                         BIO_printf(bio_s_out,"Read BLOCK\n");
 732                                         break;
 733                                 case SSL_ERROR_SYSCALL:
 734                                 case SSL_ERROR_SSL:
 735                                         BIO_printf(bio_s_out,"ERROR\n");
 736                                         ERR_print_errors(bio_err);
 737                                         ret=1;
 738                                         goto err;
 739                                 case SSL_ERROR_ZERO_RETURN:
 740                                         BIO_printf(bio_s_out,"DONE\n");
 741                                         ret=1;
 742                                         goto err;
 743                                         }
 744                                 }
 745                         }
 746                 }
 747 err:
 748         BIO_printf(bio_s_out,"shutting down SSL\n");
 749 #if 1
 750         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 751 #else
 752         SSL_shutdown(con);
 753 #endif
 754         if (con != NULL) SSL_free(con);
 755         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
 756         if (buf != NULL)
 757                 {
 758                 memset(buf,0,BUFSIZZ);
 759                 Free(buf);
 760                 }
 761         if (ret >= 0)
 762                 BIO_printf(bio_s_out,"ACCEPT\n");
 763         return(ret);
 764         }
 765
 766 static void close_accept_socket()
 767         {
 768         BIO_printf(bio_err,"shutdown accept socket\n");
 769         if (accept_socket >= 0)
 770                 {
 771                 SHUTDOWN2(accept_socket);
 772                 }
 773         }
 774
 775 static int init_ssl_connection(con)
 776 SSL *con;
 777         {
 778         int i;
 779         char *str;
 780         X509 *peer;
 781         long verify_error;
 782         MS_STATIC char buf[BUFSIZ];
 783
 784         if ((i=SSL_accept(con)) <= 0)
 785                 {
 786                 if (BIO_sock_should_retry(i))
 787                         {
 788                         BIO_printf(bio_s_out,"DELAY\n");
 789                         return(1);
 790                         }
 791
 792                 BIO_printf(bio_err,"ERROR\n");
 793                 verify_error=SSL_get_verify_result(con);
 794                 if (verify_error != X509_V_OK)
 795                         {
 796                         BIO_printf(bio_err,"verify error:%s\n",
 797                                 X509_verify_cert_error_string(verify_error));
 798                         }
 799                 else
 800                         ERR_print_errors(bio_err);
 801                 return(0);
 802                 }
 803
 804         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
 805
 806         peer=SSL_get_peer_certificate(con);
 807         if (peer != NULL)
 808                 {
 809                 BIO_printf(bio_s_out,"Client certificate\n");
 810                 PEM_write_bio_X509(bio_s_out,peer);
 811                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
 812                 BIO_printf(bio_s_out,"subject=%s\n",buf);
 813                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
 814                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
 815                 X509_free(peer);
 816                 }
 817
 818         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
 819                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
 820         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
 821         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
 822         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
 823         return(1);
 824         }
 825
 826 #ifndef NO_DH
 827 static DH *load_dh_param()
 828         {
 829         DH *ret=NULL;
 830         BIO *bio;
 831
 832         if ((bio=BIO_new_file(DH_PARAM,"r")) == NULL)
 833                 goto err;
 834         ret=PEM_read_bio_DHparams(bio,NULL,NULL);
 835 err:
 836         if (bio != NULL) BIO_free(bio);
 837         return(ret);
 838         }
 839 #endif
 840
 841 #if 0
 842 static int load_CA(ctx,file)
 843 SSL_CTX *ctx;
 844 char *file;
 845         {
 846         FILE *in;
 847         X509 *x=NULL;
 848
 849         if ((in=fopen(file,"r")) == NULL)
 850                 return(0);
 851
 852         for (;;)
 853                 {
 854                 if (PEM_read_X509(in,&x,NULL) == NULL)
 855                         break;
 856                 SSL_CTX_add_client_CA(ctx,x);
 857                 }
 858         if (x != NULL) X509_free(x);
 859         fclose(in);
 860         return(1);
 861         }
 862 #endif
 863
 864 static int www_body(hostname, s)
 865 char *hostname;
 866 int s;
 867         {
 868         char buf[1024];
 869         int ret=1;
 870         int i,j,k,blank,dot;
 871         struct stat st_buf;
 872         SSL *con;
 873         SSL_CIPHER *c;
 874         BIO *io,*ssl_bio,*sbio;
 875         long total_bytes;
 876
 877         io=BIO_new(BIO_f_buffer());
 878         ssl_bio=BIO_new(BIO_f_ssl());
 879         if ((io == NULL) || (ssl_bio == NULL)) goto err;
 880
 881 #ifdef FIONBIO
 882         if (s_nbio)
 883                 {
 884                 unsigned long sl=1;
 885
 886                 if (!s_quiet)
 887                         BIO_printf(bio_err,"turning on non blocking io\n");
 888                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
 889                         ERR_print_errors(bio_err);
 890                 }
 891 #endif
 892
 893         /* lets make the output buffer a reasonable size */
 894         if (!BIO_set_write_buffer_size(io,253 /*16*1024*/)) goto err;
 895
 896         if ((con=(SSL *)SSL_new(ctx)) == NULL) goto err;
 897
 898         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 899         if (s_nbio_test)
 900                 {
 901                 BIO *test;
 902
 903                 test=BIO_new(BIO_f_nbio_test());
 904                 sbio=BIO_push(test,sbio);
 905                 }
 906         SSL_set_bio(con,sbio,sbio);
 907         SSL_set_accept_state(con);
 908
 909         /* SSL_set_fd(con,s); */
 910         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
 911         BIO_push(io,ssl_bio);
 912
 913         if (s_debug)
 914                 {
 915                 con->debug=1;
 916                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 917                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 918                 }
 919
 920         blank=0;
 921         for (;;)
 922                 {
 923                 if (hack)
 924                         {
 925                         i=SSL_accept(con);
 926
 927                         switch (SSL_get_error(con,i))
 928                                 {
 929                         case SSL_ERROR_NONE:
 930                                 break;
 931                         case SSL_ERROR_WANT_WRITE:
 932                         case SSL_ERROR_WANT_READ:
 933                         case SSL_ERROR_WANT_X509_LOOKUP:
 934                                 continue;
 935                         case SSL_ERROR_SYSCALL:
 936                         case SSL_ERROR_SSL:
 937                         case SSL_ERROR_ZERO_RETURN:
 938                                 ret=1;
 939                                 goto err;
 940                                 break;
 941                                 }
 942
 943                         SSL_renegotiate(con);
 944                         SSL_write(con,NULL,0);
 945                         }
 946
 947                 i=BIO_gets(io,buf,sizeof(buf)-1);
 948                 if (i < 0) /* error */
 949                         {
 950                         if (!BIO_should_retry(io))
 951                                 {
 952                                 if (!s_quiet)
 953                                         ERR_print_errors(bio_err);
 954                                 goto err;
 955                                 }
 956                         else
 957                                 {
 958                                 BIO_printf(bio_s_out,"read R BLOCK\n");
 959 #ifndef MSDOS
 960                                 sleep(1);
 961 #endif
 962                                 continue;
 963                                 }
 964                         }
 965                 else if (i == 0) /* end of input */
 966                         {
 967                         ret=1;
 968                         goto end;
 969                         }
 970
 971                 /* else we have data */
 972                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
 973                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
 974                         {
 975                         char *p;
 976                         X509 *peer;
 977                         STACK *sk;
 978                         static char *space="                          ";
 979
 980                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
 981                         BIO_puts(io,"<HTML><BODY BGCOLOR=ffffff>\n");
 982                         BIO_puts(io,"<pre>\n");
 983 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
 984                         BIO_puts(io,"\n");
 985                         for (i=0; i<local_argc; i++)
 986                                 {
 987                                 BIO_puts(io,local_argv[i]);
 988                                 BIO_write(io," ",1);
 989                                 }
 990                         BIO_puts(io,"\n");
 991
 992                         /* The following is evil and should not really
 993                          * be done */
 994                         BIO_printf(io,"Ciphers supported in s_server binary\n");
 995                         sk=SSL_get_ciphers(con);
 996                         j=sk_num(sk);
 997                         for (i=0; i<j; i++)
 998                                 {
 999                                 c=(SSL_CIPHER *)sk_value(sk,i);
1000                                 BIO_printf(io,"%-11s:%-25s",
1001                                         SSL_CIPHER_get_version(c),
1002                                         SSL_CIPHER_get_name(c));
1003                                 if ((((i+1)%2) == 0) && (i+1 != j))
1004                                         BIO_puts(io,"\n");
1005                                 }
1006                         BIO_puts(io,"\n");
1007                         p=SSL_get_shared_ciphers(con,buf,sizeof(buf));
1008                         if (p != NULL)
1009                                 {
1010                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1011                                 j=i=0;
1012                                 while (*p)
1013                                         {
1014                                         if (*p == ':')
1015                                                 {
1016                                                 BIO_write(io,space,26-j);
1017                                                 i++;
1018                                                 j=0;
1019                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1020                                                 }
1021                                         else
1022                                                 {
1023                                                 BIO_write(io,p,1);
1024                                                 j++;
1025                                                 }
1026                                         p++;
1027                                         }
1028                                 BIO_puts(io,"\n");
1029                                 }
1030                         BIO_printf(io,((con->hit)
1031                                 ?"---\nReused, "
1032                                 :"---\nNew, "));
1033                         c=SSL_get_current_cipher(con);
1034                         BIO_printf(io,"%s, Cipher is %s\n",
1035                                 SSL_CIPHER_get_version(c),
1036                                 SSL_CIPHER_get_name(c));
1037                         SSL_SESSION_print(io,SSL_get_session(con));
1038                         BIO_printf(io,"---\n");
1039                         print_stats(io,SSL_get_SSL_CTX(con));
1040                         BIO_printf(io,"---\n");
1041                         peer=SSL_get_peer_certificate(con);
1042                         if (peer != NULL)
1043                                 {
1044                                 BIO_printf(io,"Client certificate\n");
1045                                 X509_print(io,peer);
1046                                 PEM_write_bio_X509(io,peer);
1047                                 }
1048                         else
1049                                 BIO_puts(io,"no client certificate available\n");
1050                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1051                         break;
1052                         }
1053                 else if ((www == 2) && (strncmp("GET ",buf,4) == 0))
1054                         {
1055                         BIO *file;
1056                         char *p,*e;
1057                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1058
1059                         /* skip the '/' */
1060                         p= &(buf[5]);
1061                         dot=0;
1062                         for (e=p; *e != '\0'; e++)
1063                                 {
1064                                 if (e[0] == ' ') break;
1065                                 if (    (e[0] == '.') &&
1066                                         (strncmp(&(e[-1]),"/../",4) == 0))
1067                                         dot=1;
1068                                 }
1069
1070
1071                         if (*e == '\0')
1072                                 {
1073                                 BIO_puts(io,text);
1074                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1075                                 break;
1076                                 }
1077                         *e='\0';
1078
1079                         if (dot)
1080                                 {
1081                                 BIO_puts(io,text);
1082                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1083                                 break;
1084                                 }
1085
1086                         if (*p == '/')
1087                                 {
1088                                 BIO_puts(io,text);
1089                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1090                                 break;
1091                                 }
1092
1093                         /* append if a directory lookup */
1094                         if (e[-1] == '/')
1095                                 strcat(p,"index.html");
1096
1097                         /* if a directory, do the index thang */
1098                         if (stat(p,&st_buf) < 0)
1099                                 {
1100                                 BIO_puts(io,text);
1101                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1102                                 ERR_print_errors(io);
1103                                 break;
1104                                 }
1105                         if (S_ISDIR(st_buf.st_mode))
1106                                 {
1107                                 strcat(p,"/index.html");
1108                                 }
1109
1110                         if ((file=BIO_new_file(p,"r")) == NULL)
1111                                 {
1112                                 BIO_puts(io,text);
1113                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1114                                 ERR_print_errors(io);
1115                                 break;
1116                                 }
1117
1118                         if (!s_quiet)
1119                                 BIO_printf(bio_err,"FILE:%s\n",p);
1120
1121                         i=strlen(p);
1122                         if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1123                                 ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1124                                 ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1125                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1126                         else
1127                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1128                         /* send the file */
1129                         total_bytes=0;
1130                         for (;;)
1131                                 {
1132                                 i=BIO_read(file,buf,1024);
1133                                 if (i <= 0) break;
1134
1135                                 total_bytes+=i;
1136                                 fprintf(stderr,"%d\n",i);
1137                                 if (total_bytes > 3*1024)
1138                                         {
1139                                         total_bytes=0;
1140                                         fprintf(stderr,"RENEGOTIATE\n");
1141                                         SSL_renegotiate(con);
1142                                         }
1143
1144                                 for (j=0; j<i; )
1145                                         {
1146 #ifdef RENEG
1147 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1148 #endif
1149                                         k=BIO_write(io,&(buf[j]),i-j);
1150                                         if (k <= 0)
1151                                                 {
1152                                                 if (!BIO_should_retry(io))
1153                                                         goto write_error;
1154                                                 else
1155                                                         {
1156                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1157                                                         }
1158                                                 }
1159                                         else
1160                                                 {
1161                                                 j+=k;
1162                                                 }
1163                                         }
1164                                 }
1165 write_error:
1166                         BIO_free(file);
1167                         break;
1168                         }
1169                 }
1170
1171         for (;;)
1172                 {
1173                 i=(int)BIO_flush(io);
1174                 if (i <= 0)
1175                         {
1176                         if (!BIO_should_retry(io))
1177                                 break;
1178                         }
1179                 else
1180                         break;
1181                 }
1182 end:
1183 #if 1
1184         /* make sure we re-use sessions */
1185         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1186 #else
1187         /* This kills performace */
1188 /*      SSL_shutdown(con); A shutdown gets sent in the
1189  *      BIO_free_all(io) procession */
1190 #endif
1191
1192 err:
1193
1194         if (ret >= 0)
1195                 BIO_printf(bio_s_out,"ACCEPT\n");
1196
1197         if (io != NULL) BIO_free_all(io);
1198 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1199         return(ret);
1200         }
1201
1202 static RSA MS_CALLBACK *tmp_rsa_cb(s,export)
1203 SSL *s;
1204 int export;
1205         {
1206         static RSA *rsa_tmp=NULL;
1207
1208         if (rsa_tmp == NULL)
1209                 {
1210                 if (!s_quiet)
1211                         {
1212                         BIO_printf(bio_err,"Generating temp (512 bit) RSA key...");
1213                         BIO_flush(bio_err);
1214                         }
1215 #ifndef NO_RSA
1216                 rsa_tmp=RSA_generate_key(512,RSA_F4,NULL,NULL);
1217 #endif
1218                 if (!s_quiet)
1219                         {
1220                         BIO_printf(bio_err,"\n");
1221                         BIO_flush(bio_err);
1222                         }
1223                 }
1224         return(rsa_tmp);
1225         }