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 16*1024
 140 static int bufsize=32;
 141 static int accept_socket= -1;
 142
 143 #define TEST_CERT       "server.pem"
 144 #undef PROG
 145 #define PROG            s_server_main
 146
 147 #define DH_PARAM        "server.pem"
 148
 149 extern int verify_depth;
 150
 151 static char *cipher=NULL;
 152 static int s_server_verify=SSL_VERIFY_NONE;
 153 static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
 154 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
 155 #ifdef FIONBIO
 156 static int s_nbio=0;
 157 #endif
 158 static int s_nbio_test=0;
 159 static SSL_CTX *ctx=NULL;
 160 static int www=0;
 161
 162 static BIO *bio_s_out=NULL;
 163 static int s_debug=0;
 164 static int s_quiet=0;
 165
 166 #if 0
 167 static void s_server_init()
 168         {
 169         cipher=NULL;
 170         s_server_verify=SSL_VERIFY_NONE;
 171         s_dcert_file=NULL;
 172         s_dkey_file=NULL;
 173         s_cert_file=TEST_CERT;
 174         s_key_file=NULL;
 175 #ifdef FIONBIO
 176         s_nbio=0;
 177 #endif
 178         s_nbio_test=0;
 179         ctx=NULL;
 180         www=0;
 181
 182         bio_s_out=NULL;
 183         s_debug=0;
 184         s_quiet=0;
 185         }
 186 #endif
 187
 188 static void sv_usage()
 189         {
 190         BIO_printf(bio_err,"usage: s_server [args ...]\n");
 191         BIO_printf(bio_err,"\n");
 192         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
 193         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 194         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
 195         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 196         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
 197         BIO_printf(bio_err," -key arg      - RSA file to use, PEM format assumed, in cert file if\n");
 198         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
 199 #ifdef FIONBIO
 200         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 201 #endif
 202         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
 203         BIO_printf(bio_err," -debug        - Print more output\n");
 204         BIO_printf(bio_err," -state        - Print the SSL states\n");
 205         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 206         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 207         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
 208         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
 209         BIO_printf(bio_err," -quiet        - No server output\n");
 210         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
 211         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
 212         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
 213         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
 214         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
 215         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
 216         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
 217         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatability\n");
 218         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
 219         BIO_printf(bio_err," -WWW          - Returns requested page from to a 'GET <path> HTTP/1.0'\n");
 220         }
 221
 222 static int local_argc=0;
 223 static char **local_argv;
 224 static int hack=0;
 225
 226 int MAIN(argc, argv)
 227 int argc;
 228 char *argv[];
 229         {
 230         short port=PORT;
 231         char *CApath=NULL,*CAfile=NULL;
 232         int badop=0,bugs=0;
 233         int ret=1;
 234         int off=0;
 235         int no_tmp_rsa=0,nocert=0;
 236         int state=0;
 237         SSL_METHOD *meth=NULL;
 238 #ifndef NO_DH
 239         DH *dh=NULL;
 240 #endif
 241
 242 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 243         meth=SSLv23_server_method();
 244 #elif !defined(NO_SSL3)
 245         meth=SSLv3_server_method();
 246 #elif !defined(NO_SSL2)
 247         meth=SSLv2_server_method();
 248 #endif
 249
 250         local_argc=argc;
 251         local_argv=argv;
 252
 253         apps_startup();
 254         s_quiet=0;
 255         s_debug=0;
 256
 257         if (bio_err == NULL)
 258                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 259
 260         verify_depth=0;
 261 #ifdef FIONBIO
 262         s_nbio=0;
 263 #endif
 264         s_nbio_test=0;
 265
 266         argc--;
 267         argv++;
 268
 269         while (argc >= 1)
 270                 {
 271                 if      ((strcmp(*argv,"-port") == 0) ||
 272                          (strcmp(*argv,"-accept") == 0))
 273                         {
 274                         if (--argc < 1) goto bad;
 275                         if (!extract_port(*(++argv),&port))
 276                                 goto bad;
 277                         }
 278                 else if (strcmp(*argv,"-verify") == 0)
 279                         {
 280                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 281                         if (--argc < 1) goto bad;
 282                         verify_depth=atoi(*(++argv));
 283                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 284                         }
 285                 else if (strcmp(*argv,"-Verify") == 0)
 286                         {
 287                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
 288                                 SSL_VERIFY_CLIENT_ONCE;
 289                         if (--argc < 1) goto bad;
 290                         verify_depth=atoi(*(++argv));
 291                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
 292                         }
 293                 else if (strcmp(*argv,"-cert") == 0)
 294                         {
 295                         if (--argc < 1) goto bad;
 296                         s_cert_file= *(++argv);
 297                         }
 298                 else if (strcmp(*argv,"-key") == 0)
 299                         {
 300                         if (--argc < 1) goto bad;
 301                         s_key_file= *(++argv);
 302                         }
 303                 else if (strcmp(*argv,"-dcert") == 0)
 304                         {
 305                         if (--argc < 1) goto bad;
 306                         s_dcert_file= *(++argv);
 307                         }
 308                 else if (strcmp(*argv,"-dkey") == 0)
 309                         {
 310                         if (--argc < 1) goto bad;
 311                         s_dkey_file= *(++argv);
 312                         }
 313                 else if (strcmp(*argv,"-nocert") == 0)
 314                         {
 315                         nocert=1;
 316                         }
 317                 else if (strcmp(*argv,"-CApath") == 0)
 318                         {
 319                         if (--argc < 1) goto bad;
 320                         CApath= *(++argv);
 321                         }
 322                 else if (strcmp(*argv,"-cipher") == 0)
 323                         {
 324                         if (--argc < 1) goto bad;
 325                         cipher= *(++argv);
 326                         }
 327                 else if (strcmp(*argv,"-CAfile") == 0)
 328                         {
 329                         if (--argc < 1) goto bad;
 330                         CAfile= *(++argv);
 331                         }
 332 #ifdef FIONBIO
 333                 else if (strcmp(*argv,"-nbio") == 0)
 334                         { s_nbio=1; }
 335 #endif
 336                 else if (strcmp(*argv,"-nbio_test") == 0)
 337                         {
 338 #ifdef FIONBIO
 339                         s_nbio=1;
 340 #endif
 341                         s_nbio_test=1;
 342                         }
 343                 else if (strcmp(*argv,"-debug") == 0)
 344                         { s_debug=1; }
 345                 else if (strcmp(*argv,"-hack") == 0)
 346                         { hack=1; }
 347                 else if (strcmp(*argv,"-state") == 0)
 348                         { state=1; }
 349                 else if (strcmp(*argv,"-quiet") == 0)
 350                         { s_quiet=1; }
 351                 else if (strcmp(*argv,"-bugs") == 0)
 352                         { bugs=1; }
 353                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
 354                         { no_tmp_rsa=1; }
 355                 else if (strcmp(*argv,"-www") == 0)
 356                         { www=1; }
 357                 else if (strcmp(*argv,"-WWW") == 0)
 358                         { www=2; }
 359                 else if (strcmp(*argv,"-no_ssl2") == 0)
 360                         { off|=SSL_OP_NO_SSLv2; }
 361                 else if (strcmp(*argv,"-no_ssl3") == 0)
 362                         { off|=SSL_OP_NO_SSLv3; }
 363                 else if (strcmp(*argv,"-no_tls1") == 0)
 364                         { off|=SSL_OP_NO_TLSv1; }
 365 #ifndef NO_SSL2
 366                 else if (strcmp(*argv,"-ssl2") == 0)
 367                         { meth=SSLv2_server_method(); }
 368 #endif
 369 #ifndef NO_SSL3
 370                 else if (strcmp(*argv,"-ssl3") == 0)
 371                         { meth=SSLv3_server_method(); }
 372 #endif
 373 #ifndef NO_TLS1
 374                 else if (strcmp(*argv,"-tls1") == 0)
 375                         { meth=TLSv1_server_method(); }
 376 #endif
 377                 else
 378                         {
 379                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 380                         badop=1;
 381                         break;
 382                         }
 383                 argc--;
 384                 argv++;
 385                 }
 386         if (badop)
 387                 {
 388 bad:
 389                 sv_usage();
 390                 goto end;
 391                 }
 392
 393         if (bio_s_out == NULL)
 394                 {
 395                 if (s_quiet && !s_debug)
 396                         {
 397                         bio_s_out=BIO_new(BIO_s_null());
 398                         }
 399                 else
 400                         {
 401                         if (bio_s_out == NULL)
 402                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 403                         }
 404                 }
 405
 406 #if !defined(NO_RSA) || !defined(NO_DSA)
 407         if (nocert)
 408 #endif
 409                 {
 410                 s_cert_file=NULL;
 411                 s_key_file=NULL;
 412                 s_dcert_file=NULL;
 413                 s_dkey_file=NULL;
 414                 }
 415
 416         SSL_load_error_strings();
 417         SSLeay_add_ssl_algorithms();
 418
 419         ctx=SSL_CTX_new(meth);
 420         if (ctx == NULL)
 421                 {
 422                 ERR_print_errors(bio_err);
 423                 goto end;
 424                 }
 425
 426         SSL_CTX_set_quiet_shutdown(ctx,1);
 427         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
 428         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
 429         SSL_CTX_set_options(ctx,off);
 430         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);
 431
 432         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 433
 434         SSL_CTX_sess_set_cache_size(ctx,128);
 435
 436 #if 0
 437         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
 438 #endif
 439
 440 #if 0
 441         if (s_cert_file == NULL)
 442                 {
 443                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
 444                 goto end;
 445                 }
 446 #endif
 447
 448         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 449                 (!SSL_CTX_set_default_verify_paths(ctx)))
 450                 {
 451                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
 452                 ERR_print_errors(bio_err);
 453                 /* goto end; */
 454                 }
 455
 456 #ifndef NO_DH
 457         /* EAY EAY EAY evil hack */
 458         dh=load_dh_param();
 459         if (dh != NULL)
 460                 {
 461                 BIO_printf(bio_s_out,"Setting temp DH parameters\n");
 462                 }
 463         else
 464                 {
 465                 BIO_printf(bio_s_out,"Using default temp DH parameters\n");
 466                 dh=get_dh512();
 467                 }
 468         BIO_flush(bio_s_out);
 469
 470         SSL_CTX_set_tmp_dh(ctx,dh);
 471         DH_free(dh);
 472 #endif
 473
 474         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
 475                 goto end;
 476         if (s_dcert_file != NULL)
 477                 {
 478                 if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
 479                         goto end;
 480                 }
 481
 482 #if 1
 483         SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
 484 #else
 485         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
 486                 {
 487                 RSA *rsa;
 488
 489                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
 490                 BIO_flush(bio_s_out);
 491
 492                 rsa=RSA_generate_key(512,RSA_F4,NULL);
 493
 494                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
 495                         {
 496                         ERR_print_errors(bio_err);
 497                         goto end;
 498                         }
 499                 RSA_free(rsa);
 500                 BIO_printf(bio_s_out,"\n");
 501                 }
 502 #endif
 503
 504         if (cipher != NULL)
 505                 SSL_CTX_set_cipher_list(ctx,cipher);
 506         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
 507
 508         SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
 509
 510         BIO_printf(bio_s_out,"ACCEPT\n");
 511         if (www)
 512                 do_server(port,&accept_socket,www_body);
 513         else
 514                 do_server(port,&accept_socket,sv_body);
 515         print_stats(bio_s_out,ctx);
 516         ret=0;
 517 end:
 518         if (ctx != NULL) SSL_CTX_free(ctx);
 519         if (bio_s_out != NULL)
 520                 {
 521                 BIO_free(bio_s_out);
 522                 bio_s_out=NULL;
 523                 }
 524         EXIT(ret);
 525         }
 526
 527 static void print_stats(bio,ssl_ctx)
 528 BIO *bio;
 529 SSL_CTX *ssl_ctx;
 530         {
 531         BIO_printf(bio,"%4ld items in the session cache\n",
 532                 SSL_CTX_sess_number(ssl_ctx));
 533         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
 534                 SSL_CTX_sess_connect(ssl_ctx));
 535         BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
 536                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
 537         BIO_printf(bio,"%4d client connects that finished\n",
 538                 SSL_CTX_sess_connect_good(ssl_ctx));
 539         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
 540                 SSL_CTX_sess_accept(ssl_ctx));
 541         BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
 542                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
 543         BIO_printf(bio,"%4d server accepts that finished\n",
 544                 SSL_CTX_sess_accept_good(ssl_ctx));
 545         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
 546         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
 547         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
 548         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
 549         BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
 550                 SSL_CTX_sess_cache_full(ssl_ctx),
 551                 SSL_CTX_sess_get_cache_size(ssl_ctx));
 552         }
 553
 554 static int sv_body(hostname, s)
 555 char *hostname;
 556 int s;
 557         {
 558         char *buf=NULL;
 559         fd_set readfds;
 560         int ret=1,width;
 561         int k,i;
 562         unsigned long l;
 563         SSL *con=NULL;
 564         BIO *sbio;
 565
 566         if ((buf=Malloc(bufsize)) == NULL)
 567                 {
 568                 BIO_printf(bio_err,"out of memory\n");
 569                 goto err;
 570                 }
 571 #ifdef FIONBIO
 572         if (s_nbio)
 573                 {
 574                 unsigned long sl=1;
 575
 576                 if (!s_quiet)
 577                         BIO_printf(bio_err,"turning on non blocking io\n");
 578                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
 579                         ERR_print_errors(bio_err);
 580                 }
 581 #endif
 582
 583         if (con == NULL)
 584                 con=(SSL *)SSL_new(ctx);
 585         SSL_clear(con);
 586
 587         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 588         if (s_nbio_test)
 589                 {
 590                 BIO *test;
 591
 592                 test=BIO_new(BIO_f_nbio_test());
 593                 sbio=BIO_push(test,sbio);
 594                 }
 595         SSL_set_bio(con,sbio,sbio);
 596         SSL_set_accept_state(con);
 597         /* SSL_set_fd(con,s); */
 598
 599         if (s_debug)
 600                 {
 601                 con->debug=1;
 602                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 603                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 604                 }
 605
 606         width=s+1;
 607         for (;;)
 608                 {
 609                 FD_ZERO(&readfds);
 610 #ifndef WINDOWS
 611                 FD_SET(fileno(stdin),&readfds);
 612 #endif
 613                 FD_SET(s,&readfds);
 614                 i=select(width,&readfds,NULL,NULL,NULL);
 615                 if (i <= 0) continue;
 616                 if (FD_ISSET(fileno(stdin),&readfds))
 617                         {
 618                         i=read(fileno(stdin),buf,bufsize);
 619                         if (!s_quiet)
 620                                 {
 621                                 if ((i <= 0) || (buf[0] == 'Q'))
 622                                         {
 623                                         BIO_printf(bio_s_out,"DONE\n");
 624                                         SHUTDOWN(s);
 625                                         close_accept_socket();
 626                                         ret= -11;
 627                                         goto err;
 628                                         }
 629                                 if ((i <= 0) || (buf[0] == 'q'))
 630                                         {
 631                                         BIO_printf(bio_s_out,"DONE\n");
 632                                         SHUTDOWN(s);
 633         /*                              close_accept_socket();
 634                                         ret= -11;*/
 635                                         goto err;
 636                                         }
 637                                 if ((buf[0] == 'r') &&
 638                                         ((buf[1] == '\n') || (buf[1] == '\r')))
 639                                         {
 640                                         SSL_renegotiate(con);
 641                                         i=SSL_do_handshake(con);
 642                                         printf("SSL_do_handshake -> %d\n",i);
 643                                         i=0; /*13; */
 644                                         continue;
 645                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
 646                                         }
 647                                 if ((buf[0] == 'R') &&
 648                                         ((buf[1] == '\n') || (buf[1] == '\r')))
 649                                         {
 650                                         SSL_set_verify(con,
 651                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
 652                                         SSL_renegotiate(con);
 653                                         i=SSL_do_handshake(con);
 654                                         printf("SSL_do_handshake -> %d\n",i);
 655                                         i=0; /* 13; */
 656                                         continue;
 657                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
 658                                         }
 659                                 if (buf[0] == 'P')
 660                                         {
 661                                         static char *str="Lets print some clear text\n";
 662                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
 663                                         }
 664                                 if (buf[0] == 'S')
 665                                         {
 666                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
 667                                         }
 668                                 }
 669                         l=k=0;
 670                         for (;;)
 671                                 {
 672                                 /* should do a select for the write */
 673 #ifdef RENEG
 674 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
 675 #endif
 676                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
 677                                 switch (SSL_get_error(con,k))
 678                                         {
 679                                 case SSL_ERROR_NONE:
 680                                         break;
 681                                 case SSL_ERROR_WANT_WRITE:
 682                                 case SSL_ERROR_WANT_READ:
 683                                 case SSL_ERROR_WANT_X509_LOOKUP:
 684                                         BIO_printf(bio_s_out,"Write BLOCK\n");
 685                                         break;
 686                                 case SSL_ERROR_SYSCALL:
 687                                 case SSL_ERROR_SSL:
 688                                         BIO_printf(bio_s_out,"ERROR\n");
 689                                         ERR_print_errors(bio_err);
 690                                         ret=1;
 691                                         goto err;
 692                                         /* break; */
 693                                 case SSL_ERROR_ZERO_RETURN:
 694                                         BIO_printf(bio_s_out,"DONE\n");
 695                                         ret=1;
 696                                         goto err;
 697                                         }
 698                                 l+=k;
 699                                 i-=k;
 700                                 if (i <= 0) break;
 701                                 }
 702                         }
 703                 if (FD_ISSET(s,&readfds))
 704                         {
 705                         if (!SSL_is_init_finished(con))
 706                                 {
 707                                 i=init_ssl_connection(con);
 708
 709                                 if (i < 0)
 710                                         {
 711                                         ret=0;
 712                                         goto err;
 713                                         }
 714                                 else if (i == 0)
 715                                         {
 716                                         ret=1;
 717                                         goto err;
 718                                         }
 719                                 }
 720                         else
 721                                 {
 722 again:
 723                                 i=SSL_read(con,(char *)buf,bufsize);
 724                                 switch (SSL_get_error(con,i))
 725                                         {
 726                                 case SSL_ERROR_NONE:
 727                                         write(fileno(stdout),buf,
 728                                                 (unsigned int)i);
 729                                         if (SSL_pending(con)) goto again;
 730                                         break;
 731                                 case SSL_ERROR_WANT_WRITE:
 732                                 case SSL_ERROR_WANT_READ:
 733                                 case SSL_ERROR_WANT_X509_LOOKUP:
 734                                         BIO_printf(bio_s_out,"Read BLOCK\n");
 735                                         break;
 736                                 case SSL_ERROR_SYSCALL:
 737                                 case SSL_ERROR_SSL:
 738                                         BIO_printf(bio_s_out,"ERROR\n");
 739                                         ERR_print_errors(bio_err);
 740                                         ret=1;
 741                                         goto err;
 742                                 case SSL_ERROR_ZERO_RETURN:
 743                                         BIO_printf(bio_s_out,"DONE\n");
 744                                         ret=1;
 745                                         goto err;
 746                                         }
 747                                 }
 748                         }
 749                 }
 750 err:
 751         BIO_printf(bio_s_out,"shutting down SSL\n");
 752 #if 1
 753         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 754 #else
 755         SSL_shutdown(con);
 756 #endif
 757         if (con != NULL) SSL_free(con);
 758         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
 759         if (buf != NULL)
 760                 {
 761                 memset(buf,0,bufsize);
 762                 Free(buf);
 763                 }
 764         if (ret >= 0)
 765                 BIO_printf(bio_s_out,"ACCEPT\n");
 766         return(ret);
 767         }
 768
 769 static void close_accept_socket()
 770         {
 771         BIO_printf(bio_err,"shutdown accept socket\n");
 772         if (accept_socket >= 0)
 773                 {
 774                 SHUTDOWN2(accept_socket);
 775                 }
 776         }
 777
 778 static int init_ssl_connection(con)
 779 SSL *con;
 780         {
 781         int i;
 782         char *str;
 783         X509 *peer;
 784         long verify_error;
 785         MS_STATIC char buf[BUFSIZ];
 786
 787         if ((i=SSL_accept(con)) <= 0)
 788                 {
 789                 if (BIO_sock_should_retry(i))
 790                         {
 791                         BIO_printf(bio_s_out,"DELAY\n");
 792                         return(1);
 793                         }
 794
 795                 BIO_printf(bio_err,"ERROR\n");
 796                 verify_error=SSL_get_verify_result(con);
 797                 if (verify_error != X509_V_OK)
 798                         {
 799                         BIO_printf(bio_err,"verify error:%s\n",
 800                                 X509_verify_cert_error_string(verify_error));
 801                         }
 802                 else
 803                         ERR_print_errors(bio_err);
 804                 return(0);
 805                 }
 806
 807         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
 808
 809         peer=SSL_get_peer_certificate(con);
 810         if (peer != NULL)
 811                 {
 812                 BIO_printf(bio_s_out,"Client certificate\n");
 813                 PEM_write_bio_X509(bio_s_out,peer);
 814                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
 815                 BIO_printf(bio_s_out,"subject=%s\n",buf);
 816                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
 817                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
 818                 X509_free(peer);
 819                 }
 820
 821         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
 822                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
 823         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
 824         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
 825         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
 826         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
 827                 TLS1_FLAGS_TLS_PADDING_BUG)
 828                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
 829
 830         return(1);
 831         }
 832
 833 #ifndef NO_DH
 834 static DH *load_dh_param()
 835         {
 836         DH *ret=NULL;
 837         BIO *bio;
 838
 839         if ((bio=BIO_new_file(DH_PARAM,"r")) == NULL)
 840                 goto err;
 841         ret=PEM_read_bio_DHparams(bio,NULL,NULL);
 842 err:
 843         if (bio != NULL) BIO_free(bio);
 844         return(ret);
 845         }
 846 #endif
 847
 848 #if 0
 849 static int load_CA(ctx,file)
 850 SSL_CTX *ctx;
 851 char *file;
 852         {
 853         FILE *in;
 854         X509 *x=NULL;
 855
 856         if ((in=fopen(file,"r")) == NULL)
 857                 return(0);
 858
 859         for (;;)
 860                 {
 861                 if (PEM_read_X509(in,&x,NULL) == NULL)
 862                         break;
 863                 SSL_CTX_add_client_CA(ctx,x);
 864                 }
 865         if (x != NULL) X509_free(x);
 866         fclose(in);
 867         return(1);
 868         }
 869 #endif
 870
 871 static int www_body(hostname, s)
 872 char *hostname;
 873 int s;
 874         {
 875         char *buf=NULL;
 876         int ret=1;
 877         int i,j,k,blank,dot;
 878         struct stat st_buf;
 879         SSL *con;
 880         SSL_CIPHER *c;
 881         BIO *io,*ssl_bio,*sbio;
 882         long total_bytes;
 883
 884         buf=Malloc(bufsize);
 885         if (buf == NULL) return(0);
 886         io=BIO_new(BIO_f_buffer());
 887         ssl_bio=BIO_new(BIO_f_ssl());
 888         if ((io == NULL) || (ssl_bio == NULL)) goto err;
 889
 890 #ifdef FIONBIO
 891         if (s_nbio)
 892                 {
 893                 unsigned long sl=1;
 894
 895                 if (!s_quiet)
 896                         BIO_printf(bio_err,"turning on non blocking io\n");
 897                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
 898                         ERR_print_errors(bio_err);
 899                 }
 900 #endif
 901
 902         /* lets make the output buffer a reasonable size */
 903         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
 904
 905         if ((con=(SSL *)SSL_new(ctx)) == NULL) goto err;
 906
 907         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 908         if (s_nbio_test)
 909                 {
 910                 BIO *test;
 911
 912                 test=BIO_new(BIO_f_nbio_test());
 913                 sbio=BIO_push(test,sbio);
 914                 }
 915         SSL_set_bio(con,sbio,sbio);
 916         SSL_set_accept_state(con);
 917
 918         /* SSL_set_fd(con,s); */
 919         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
 920         BIO_push(io,ssl_bio);
 921
 922         if (s_debug)
 923                 {
 924                 con->debug=1;
 925                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 926                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 927                 }
 928
 929         blank=0;
 930         for (;;)
 931                 {
 932                 if (hack)
 933                         {
 934                         i=SSL_accept(con);
 935
 936                         switch (SSL_get_error(con,i))
 937                                 {
 938                         case SSL_ERROR_NONE:
 939                                 break;
 940                         case SSL_ERROR_WANT_WRITE:
 941                         case SSL_ERROR_WANT_READ:
 942                         case SSL_ERROR_WANT_X509_LOOKUP:
 943                                 continue;
 944                         case SSL_ERROR_SYSCALL:
 945                         case SSL_ERROR_SSL:
 946                         case SSL_ERROR_ZERO_RETURN:
 947                                 ret=1;
 948                                 goto err;
 949                                 /* break; */
 950                                 }
 951
 952                         SSL_renegotiate(con);
 953                         SSL_write(con,NULL,0);
 954                         }
 955
 956                 i=BIO_gets(io,buf,bufsize-1);
 957                 if (i < 0) /* error */
 958                         {
 959                         if (!BIO_should_retry(io))
 960                                 {
 961                                 if (!s_quiet)
 962                                         ERR_print_errors(bio_err);
 963                                 goto err;
 964                                 }
 965                         else
 966                                 {
 967                                 BIO_printf(bio_s_out,"read R BLOCK\n");
 968 #ifndef MSDOS
 969                                 sleep(1);
 970 #endif
 971                                 continue;
 972                                 }
 973                         }
 974                 else if (i == 0) /* end of input */
 975                         {
 976                         ret=1;
 977                         goto end;
 978                         }
 979
 980                 /* else we have data */
 981                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
 982                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
 983                         {
 984                         char *p;
 985                         X509 *peer;
 986                         STACK *sk;
 987                         static char *space="                          ";
 988
 989                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
 990                         BIO_puts(io,"<HTML><BODY BGCOLOR=ffffff>\n");
 991                         BIO_puts(io,"<pre>\n");
 992 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
 993                         BIO_puts(io,"\n");
 994                         for (i=0; i<local_argc; i++)
 995                                 {
 996                                 BIO_puts(io,local_argv[i]);
 997                                 BIO_write(io," ",1);
 998                                 }
 999                         BIO_puts(io,"\n");
1000
1001                         /* The following is evil and should not really
1002                          * be done */
1003                         BIO_printf(io,"Ciphers supported in s_server binary\n");
1004                         sk=SSL_get_ciphers(con);
1005                         j=sk_num(sk);
1006                         for (i=0; i<j; i++)
1007                                 {
1008                                 c=(SSL_CIPHER *)sk_value(sk,i);
1009                                 BIO_printf(io,"%-11s:%-25s",
1010                                         SSL_CIPHER_get_version(c),
1011                                         SSL_CIPHER_get_name(c));
1012                                 if ((((i+1)%2) == 0) && (i+1 != j))
1013                                         BIO_puts(io,"\n");
1014                                 }
1015                         BIO_puts(io,"\n");
1016                         p=SSL_get_shared_ciphers(con,buf,bufsize);
1017                         if (p != NULL)
1018                                 {
1019                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1020                                 j=i=0;
1021                                 while (*p)
1022                                         {
1023                                         if (*p == ':')
1024                                                 {
1025                                                 BIO_write(io,space,26-j);
1026                                                 i++;
1027                                                 j=0;
1028                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1029                                                 }
1030                                         else
1031                                                 {
1032                                                 BIO_write(io,p,1);
1033                                                 j++;
1034                                                 }
1035                                         p++;
1036                                         }
1037                                 BIO_puts(io,"\n");
1038                                 }
1039                         BIO_printf(io,((con->hit)
1040                                 ?"---\nReused, "
1041                                 :"---\nNew, "));
1042                         c=SSL_get_current_cipher(con);
1043                         BIO_printf(io,"%s, Cipher is %s\n",
1044                                 SSL_CIPHER_get_version(c),
1045                                 SSL_CIPHER_get_name(c));
1046                         SSL_SESSION_print(io,SSL_get_session(con));
1047                         BIO_printf(io,"---\n");
1048                         print_stats(io,SSL_get_SSL_CTX(con));
1049                         BIO_printf(io,"---\n");
1050                         peer=SSL_get_peer_certificate(con);
1051                         if (peer != NULL)
1052                                 {
1053                                 BIO_printf(io,"Client certificate\n");
1054                                 X509_print(io,peer);
1055                                 PEM_write_bio_X509(io,peer);
1056                                 }
1057                         else
1058                                 BIO_puts(io,"no client certificate available\n");
1059                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1060                         break;
1061                         }
1062                 else if ((www == 2) && (strncmp("GET ",buf,4) == 0))
1063                         {
1064                         BIO *file;
1065                         char *p,*e;
1066                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1067
1068                         /* skip the '/' */
1069                         p= &(buf[5]);
1070                         dot=0;
1071                         for (e=p; *e != '\0'; e++)
1072                                 {
1073                                 if (e[0] == ' ') break;
1074                                 if (    (e[0] == '.') &&
1075                                         (strncmp(&(e[-1]),"/../",4) == 0))
1076                                         dot=1;
1077                                 }
1078
1079
1080                         if (*e == '\0')
1081                                 {
1082                                 BIO_puts(io,text);
1083                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1084                                 break;
1085                                 }
1086                         *e='\0';
1087
1088                         if (dot)
1089                                 {
1090                                 BIO_puts(io,text);
1091                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1092                                 break;
1093                                 }
1094
1095                         if (*p == '/')
1096                                 {
1097                                 BIO_puts(io,text);
1098                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1099                                 break;
1100                                 }
1101
1102                         /* append if a directory lookup */
1103                         if (e[-1] == '/')
1104                                 strcat(p,"index.html");
1105
1106                         /* if a directory, do the index thang */
1107                         if (stat(p,&st_buf) < 0)
1108                                 {
1109                                 BIO_puts(io,text);
1110                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1111                                 ERR_print_errors(io);
1112                                 break;
1113                                 }
1114                         if (S_ISDIR(st_buf.st_mode))
1115                                 {
1116                                 strcat(p,"/index.html");
1117                                 }
1118
1119                         if ((file=BIO_new_file(p,"r")) == NULL)
1120                                 {
1121                                 BIO_puts(io,text);
1122                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1123                                 ERR_print_errors(io);
1124                                 break;
1125                                 }
1126
1127                         if (!s_quiet)
1128                                 BIO_printf(bio_err,"FILE:%s\n",p);
1129
1130                         i=strlen(p);
1131                         if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1132                                 ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1133                                 ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1134                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1135                         else
1136                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1137                         /* send the file */
1138                         total_bytes=0;
1139                         for (;;)
1140                                 {
1141                                 i=BIO_read(file,buf,bufsize);
1142                                 if (i <= 0) break;
1143
1144 #ifdef RENEG
1145                                 total_bytes+=i;
1146                                 fprintf(stderr,"%d\n",i);
1147                                 if (total_bytes > 3*1024)
1148                                         {
1149                                         total_bytes=0;
1150                                         fprintf(stderr,"RENEGOTIATE\n");
1151                                         SSL_renegotiate(con);
1152                                         }
1153 #endif
1154
1155                                 for (j=0; j<i; )
1156                                         {
1157 #ifdef RENEG
1158 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1159 #endif
1160                                         k=BIO_write(io,&(buf[j]),i-j);
1161                                         if (k <= 0)
1162                                                 {
1163                                                 if (!BIO_should_retry(io))
1164                                                         goto write_error;
1165                                                 else
1166                                                         {
1167                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1168                                                         }
1169                                                 }
1170                                         else
1171                                                 {
1172                                                 j+=k;
1173                                                 }
1174                                         }
1175                                 }
1176 write_error:
1177                         BIO_free(file);
1178                         break;
1179                         }
1180                 }
1181
1182         for (;;)
1183                 {
1184                 i=(int)BIO_flush(io);
1185                 if (i <= 0)
1186                         {
1187                         if (!BIO_should_retry(io))
1188                                 break;
1189                         }
1190                 else
1191                         break;
1192                 }
1193 end:
1194 #if 1
1195         /* make sure we re-use sessions */
1196         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1197 #else
1198         /* This kills performace */
1199 /*      SSL_shutdown(con); A shutdown gets sent in the
1200  *      BIO_free_all(io) procession */
1201 #endif
1202
1203 err:
1204
1205         if (ret >= 0)
1206                 BIO_printf(bio_s_out,"ACCEPT\n");
1207
1208         if (buf != NULL) Free(buf);
1209         if (io != NULL) BIO_free_all(io);
1210 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1211         return(ret);
1212         }
1213
1214 static RSA MS_CALLBACK *tmp_rsa_cb(s,export)
1215 SSL *s;
1216 int export;
1217         {
1218         static RSA *rsa_tmp=NULL;
1219
1220         if (rsa_tmp == NULL)
1221                 {
1222                 if (!s_quiet)
1223                         {
1224                         BIO_printf(bio_err,"Generating temp (512 bit) RSA key...");
1225                         BIO_flush(bio_err);
1226                         }
1227 #ifndef NO_RSA
1228                 rsa_tmp=RSA_generate_key(512,RSA_F4,NULL,NULL);
1229 #endif
1230                 if (!s_quiet)
1231                         {
1232                         BIO_printf(bio_err,"\n");
1233                         BIO_flush(bio_err);
1234                         }
1235                 }
1236         return(rsa_tmp);
1237         }