apps/s_server.c

   1 /* apps/s_server.c */
   2 /* Copyright (C) 1995-1997 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 WIN16
  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 static DH *load_dh_param(void );
  86 static DH *get_dh512(void);
  87 #else
  88 static RSA MS_CALLBACK *tmp_rsa_cb();
  89 static int sv_body();
  90 static int www_body();
  91 static void close_accept_socket();
  92 static void sv_usage();
  93 static int init_ssl_connection();
  94 static void print_stats();
  95 static DH *load_dh_param();
  96 static DH *get_dh512();
  97 #endif
  98
  99
 100 #ifndef S_ISDIR
 101 #define S_ISDIR(a)      (((a) & _S_IFMT) == _S_IFDIR)
 102 #endif
 103
 104 static unsigned char dh512_p[]={
 105         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
 106         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
 107         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
 108         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
 109         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
 110         0x47,0x74,0xE8,0x33,
 111         };
 112 static unsigned char dh512_g[]={
 113         0x02,
 114         };
 115
 116 static DH *get_dh512()
 117         {
 118         DH *dh=NULL;
 119
 120 #ifndef NO_DH
 121         if ((dh=DH_new()) == NULL) return(NULL);
 122         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
 123         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
 124         if ((dh->p == NULL) || (dh->g == NULL))
 125                 return(NULL);
 126 #endif
 127         return(dh);
 128         }
 129
 130 /* static int load_CA(SSL_CTX *ctx, char *file);*/
 131
 132 #undef BUFSIZZ
 133 #define BUFSIZZ 8*1024
 134 static int accept_socket= -1;
 135
 136 #define TEST_CERT       "server.pem"
 137 #undef PROG
 138 #define PROG            s_server_main
 139
 140 #define DH_PARAM        "server.pem"
 141
 142 extern int verify_depth;
 143
 144 static char *cipher=NULL;
 145 int verify=SSL_VERIFY_NONE;
 146 char *s_cert_file=TEST_CERT,*s_key_file=NULL;
 147 #ifdef FIONBIO
 148 static int s_nbio=0;
 149 #endif
 150 static int s_nbio_test=0;
 151 static SSL_CTX *ctx=NULL;
 152 static int www=0;
 153
 154 static BIO *bio_s_out=NULL;
 155 static int s_debug=0;
 156 static int s_quiet=0;
 157
 158 static void sv_usage()
 159         {
 160         BIO_printf(bio_err,"usage: s_server [args ...]\n");
 161         BIO_printf(bio_err,"\n");
 162         BIO_printf(bio_err," -accpet arg   - port to accept on (default is %d\n",PORT);
 163         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 164         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
 165         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 166         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
 167         BIO_printf(bio_err," -key arg      - RSA file to use, PEM format assumed, in cert file if\n");
 168         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
 169 #ifdef FIONBIO
 170         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 171 #endif
 172         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
 173         BIO_printf(bio_err," -debug        - Print more output\n");
 174         BIO_printf(bio_err," -state        - Print the SSL states\n");
 175         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 176         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 177         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
 178         BIO_printf(bio_err," -cipher arg   - play with 'ssleay ciphers' to see what goes here\n");
 179         BIO_printf(bio_err," -quiet        - No server output\n");
 180         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
 181         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
 182         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
 183         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatability\n");
 184         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
 185         BIO_printf(bio_err," -WWW          - Returns requested page from to a 'GET <path> HTTP/1.0'\n");
 186         }
 187
 188 static int local_argc;
 189 static char **local_argv;
 190 static int hack;
 191
 192 int MAIN(argc, argv)
 193 int argc;
 194 char *argv[];
 195         {
 196         short port=PORT;
 197         char *CApath=NULL,*CAfile=NULL;
 198         int badop=0,bugs=0;
 199         int ret=1;
 200         int no_tmp_rsa=0,nocert=0;
 201         int state=0;
 202         SSL_METHOD *meth=NULL;
 203         DH *dh=NULL;
 204
 205 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 206         meth=SSLv23_server_method();
 207 #elif !defined(NO_SSL3)
 208         meth=SSLv3_server_method();
 209 #elif !defined(NO_SSL2)
 210         meth=SSLv2_server_method();
 211 #endif
 212
 213         local_argc=argc;
 214         local_argv=argv;
 215
 216         apps_startup();
 217         s_quiet=0;
 218         s_debug=0;
 219
 220         if (bio_err == NULL)
 221                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 222
 223         verify_depth=0;
 224 #ifdef FIONBIO
 225         s_nbio=0;
 226 #endif
 227         s_nbio_test=0;
 228
 229         argc--;
 230         argv++;
 231
 232         while (argc >= 1)
 233                 {
 234                 if      ((strcmp(*argv,"-port") == 0) ||
 235                          (strcmp(*argv,"-accept") == 0))
 236                         {
 237                         if (--argc < 1) goto bad;
 238                         if (!extract_port(*(++argv),&port))
 239                                 goto bad;
 240                         }
 241                 else if (strcmp(*argv,"-verify") == 0)
 242                         {
 243                         verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 244                         if (--argc < 1) goto bad;
 245                         verify_depth=atoi(*(++argv));
 246                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 247                         }
 248                 else if (strcmp(*argv,"-Verify") == 0)
 249                         {
 250                         verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
 251                                 SSL_VERIFY_CLIENT_ONCE;
 252                         if (--argc < 1) goto bad;
 253                         verify_depth=atoi(*(++argv));
 254                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
 255                         }
 256                 else if (strcmp(*argv,"-cert") == 0)
 257                         {
 258                         if (--argc < 1) goto bad;
 259                         s_cert_file= *(++argv);
 260                         }
 261                 else if (strcmp(*argv,"-key") == 0)
 262                         {
 263                         if (--argc < 1) goto bad;
 264                         s_key_file= *(++argv);
 265                         }
 266                 else if (strcmp(*argv,"-nocert") == 0)
 267                         {
 268                         nocert=1;
 269                         }
 270                 else if (strcmp(*argv,"-CApath") == 0)
 271                         {
 272                         if (--argc < 1) goto bad;
 273                         CApath= *(++argv);
 274                         }
 275                 else if (strcmp(*argv,"-cipher") == 0)
 276                         {
 277                         if (--argc < 1) goto bad;
 278                         cipher= *(++argv);
 279                         }
 280                 else if (strcmp(*argv,"-CAfile") == 0)
 281                         {
 282                         if (--argc < 1) goto bad;
 283                         CAfile= *(++argv);
 284                         }
 285 #ifdef FIONBIO
 286                 else if (strcmp(*argv,"-nbio") == 0)
 287                         { s_nbio=1; }
 288 #endif
 289                 else if (strcmp(*argv,"-nbio_test") == 0)
 290                         {
 291 #ifdef FIONBIO
 292                         s_nbio=1;
 293 #endif
 294                         s_nbio_test=1;
 295                         }
 296                 else if (strcmp(*argv,"-debug") == 0)
 297                         { s_debug=1; }
 298                 else if (strcmp(*argv,"-hack") == 0)
 299                         { hack=1; }
 300                 else if (strcmp(*argv,"-state") == 0)
 301                         { state=1; }
 302                 else if (strcmp(*argv,"-quiet") == 0)
 303                         { s_quiet=1; }
 304                 else if (strcmp(*argv,"-bugs") == 0)
 305                         { bugs=1; }
 306                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
 307                         { no_tmp_rsa=1; }
 308                 else if (strcmp(*argv,"-www") == 0)
 309                         { www=1; }
 310                 else if (strcmp(*argv,"-WWW") == 0)
 311                         { www=2; }
 312 #ifndef NO_SSL2
 313                 else if (strcmp(*argv,"-ssl2") == 0)
 314                         { meth=SSLv2_server_method(); }
 315 #endif
 316 #ifndef NO_SSL3
 317                 else if (strcmp(*argv,"-ssl3") == 0)
 318                         { meth=SSLv3_server_method(); }
 319 #endif
 320                 else
 321                         {
 322                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 323                         badop=1;
 324                         break;
 325                         }
 326                 argc--;
 327                 argv++;
 328                 }
 329         if (badop)
 330                 {
 331 bad:
 332                 sv_usage();
 333                 goto end;
 334                 }
 335
 336         if (bio_s_out == NULL)
 337                 {
 338                 if (s_quiet && !s_debug)
 339                         {
 340                         bio_s_out=BIO_new(BIO_s_null());
 341                         }
 342                 else
 343                         {
 344                         if (bio_s_out == NULL)
 345                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 346                         }
 347                 }
 348
 349 #if !defined(NO_RSA) || !defined(NO_DSA)
 350         if (nocert)
 351 #endif
 352                 {
 353                 s_cert_file=NULL;
 354                 s_key_file=NULL;
 355                 }
 356
 357         SSL_load_error_strings();
 358         SSLeay_add_ssl_algorithms();
 359
 360         ctx=SSL_CTX_new(meth);
 361         if (ctx == NULL)
 362                 {
 363                 ERR_print_errors(bio_err);
 364                 goto end;
 365                 }
 366
 367         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
 368         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
 369         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);
 370
 371         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 372
 373 #if 0
 374         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
 375 #endif
 376
 377 #if 0
 378         if (s_cert_file == NULL)
 379                 {
 380                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
 381                 goto end;
 382                 }
 383 #endif
 384
 385         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 386                 (!SSL_CTX_set_default_verify_paths(ctx)))
 387                 {
 388                 BIO_printf(bio_err,"X509_load_verify_locations\n");
 389                 ERR_print_errors(bio_err);
 390                 goto end;
 391                 }
 392
 393 #ifndef NO_DH
 394         /* EAY EAY EAY evil hack */
 395         dh=load_dh_param();
 396         if (dh != NULL)
 397                 {
 398                 BIO_printf(bio_s_out,"Setting temp DH parameters\n");
 399                 }
 400         else
 401                 {
 402                 BIO_printf(bio_s_out,"Using default temp DH parameters\n");
 403                 dh=get_dh512();
 404                 }
 405         BIO_flush(bio_s_out);
 406
 407         SSL_CTX_set_tmp_dh(ctx,dh);
 408         DH_free(dh);
 409 #endif
 410
 411         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
 412                 goto end;
 413
 414 #if 1
 415         SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
 416 #else
 417         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
 418                 {
 419                 RSA *rsa;
 420
 421                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
 422                 BIO_flush(bio_s_out);
 423
 424                 rsa=RSA_generate_key(512,RSA_F4,NULL);
 425
 426                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
 427                         {
 428                         ERR_print_errors(bio_err);
 429                         goto end;
 430                         }
 431                 RSA_free(rsa);
 432                 BIO_printf(bio_s_out,"\n");
 433                 }
 434 #endif
 435
 436         if (cipher != NULL)
 437                 SSL_CTX_set_cipher_list(ctx,cipher);
 438         SSL_CTX_set_verify(ctx,verify,verify_callback);
 439
 440         SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(s_cert_file));
 441
 442         BIO_printf(bio_s_out,"ACCEPT\n");
 443         if (www)
 444                 do_server(port,&accept_socket,www_body);
 445         else
 446                 do_server(port,&accept_socket,sv_body);
 447         print_stats(bio_s_out,ctx);
 448         ret=0;
 449 end:
 450         if (ctx != NULL) SSL_CTX_free(ctx);
 451         if (bio_s_out != NULL)
 452                 {
 453                 BIO_free(bio_s_out);
 454                 bio_s_out=NULL;
 455                 }
 456         EXIT(ret);
 457         }
 458
 459 static void print_stats(bio,ssl_ctx)
 460 BIO *bio;
 461 SSL_CTX *ssl_ctx;
 462         {
 463         BIO_printf(bio,"%4ld items in the session cache\n",
 464                 SSL_CTX_sess_number(ssl_ctx));
 465         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
 466                 SSL_CTX_sess_connect(ssl_ctx));
 467         BIO_printf(bio,"%4d client connects that finished\n",
 468                 SSL_CTX_sess_connect_good(ssl_ctx));
 469         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
 470                 SSL_CTX_sess_accept(ssl_ctx));
 471         BIO_printf(bio,"%4d server accepts that finished\n",
 472                 SSL_CTX_sess_accept_good(ssl_ctx));
 473         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
 474         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
 475         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
 476         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
 477         }
 478
 479 static int sv_body(hostname, s)
 480 char *hostname;
 481 int s;
 482         {
 483         char *buf=NULL;
 484         fd_set readfds;
 485         int ret=1,width;
 486         int k,i;
 487         unsigned long l;
 488         SSL *con=NULL;
 489         BIO *sbio;
 490
 491         if ((buf=Malloc(BUFSIZZ)) == NULL)
 492                 {
 493                 BIO_printf(bio_err,"out of memory\n");
 494                 goto err;
 495                 }
 496 #ifdef FIONBIO
 497         if (s_nbio)
 498                 {
 499                 unsigned long sl=1;
 500
 501                 if (!s_quiet)
 502                         BIO_printf(bio_err,"turning on non blocking io\n");
 503                 socket_ioctl(s,FIONBIO,&sl);
 504                 }
 505 #endif
 506
 507         if (con == NULL)
 508                 con=(SSL *)SSL_new(ctx);
 509         SSL_clear(con);
 510
 511         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 512         if (s_nbio_test)
 513                 {
 514                 BIO *test;
 515
 516                 test=BIO_new(BIO_f_nbio_test());
 517                 sbio=BIO_push(test,sbio);
 518                 }
 519         SSL_set_bio(con,sbio,sbio);
 520         SSL_set_accept_state(con);
 521         /* SSL_set_fd(con,s); */
 522
 523         if (s_debug)
 524                 {
 525                 con->debug=1;
 526                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 527                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 528                 }
 529
 530         width=s+1;
 531         for (;;)
 532                 {
 533                 FD_ZERO(&readfds);
 534 #ifndef WINDOWS
 535                 FD_SET(fileno(stdin),&readfds);
 536 #endif
 537                 FD_SET(s,&readfds);
 538                 i=select(width,&readfds,NULL,NULL,NULL);
 539                 if (i <= 0) continue;
 540                 if (FD_ISSET(fileno(stdin),&readfds))
 541                         {
 542                         i=read(fileno(stdin),buf,BUFSIZZ);
 543                         if (!s_quiet)
 544                                 {
 545                                 if ((i <= 0) || (buf[0] == 'Q'))
 546                                         {
 547                                         BIO_printf(bio_s_out,"DONE\n");
 548                                         SHUTDOWN(s);
 549                                         close_accept_socket();
 550                                         ret= -11;
 551                                         goto err;
 552                                         }
 553                                 if ((i <= 0) || (buf[0] == 'q'))
 554                                         {
 555                                         BIO_printf(bio_s_out,"DONE\n");
 556                                         SHUTDOWN(s);
 557         /*                              close_accept_socket();
 558                                         ret= -11;*/
 559                                         goto err;
 560                                         }
 561                                 if (buf[0] == 'r')
 562                                         {
 563                                         SSL_renegotiate(con);
 564                                         i=0; /*13; */
 565                                         continue;
 566                                         strcpy(buf,"server side RE-NEGOTIATE\n");
 567                                         }
 568                                 if (buf[0] == 'R')
 569                                         {
 570                                         SSL_set_verify(con,
 571                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
 572                                         SSL_renegotiate(con);
 573                                         i=0; /* 13; */
 574                                         continue;
 575                                         strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n");
 576                                         }
 577                                 if (buf[0] == 'P')
 578                                         {
 579                                         static char *str="Lets print some clear text\n";
 580                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
 581                                         }
 582                                 if (buf[0] == 'S')
 583                                         {
 584                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
 585                                         }
 586                                 }
 587                         l=k=0;
 588                         for (;;)
 589                                 {
 590                                 /* should do a select for the write */
 591                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
 592                                 if (
 593 #ifdef FIONBIO
 594                                         s_nbio &&
 595 #endif
 596                                         BIO_sock_should_retry(k))
 597                                         {
 598                                         BIO_printf(bio_s_out,"Write BLOCK\n");
 599                                         continue;
 600                                         }
 601                                 if (k <= 0)
 602                                         {
 603                                         ERR_print_errors(bio_err);
 604                                         BIO_printf(bio_s_out,"DONE\n");
 605                                         ret=1;
 606                                         goto err;
 607                                         }
 608                                 l+=k;
 609                                 i-=k;
 610                                 if (i <= 0) break;
 611                                 }
 612                         }
 613                 if (FD_ISSET(s,&readfds))
 614                         {
 615                         if (!SSL_is_init_finished(con))
 616                                 {
 617                                 i=init_ssl_connection(con);
 618
 619                                 if (i < 0)
 620                                         {
 621                                         ret=0;
 622                                         goto err;
 623                                         }
 624                                 else if (i == 0)
 625                                         {
 626                                         ret=1;
 627                                         goto err;
 628                                         }
 629                                 }
 630                         else
 631                                 {
 632                                 i=SSL_read(con,(char *)buf,BUFSIZZ);
 633                                 if ((i <= 0) &&
 634 #ifdef FIONBIO
 635                                         s_nbio &&
 636 #endif
 637                                         BIO_sock_should_retry(i))
 638                                         {
 639                                         BIO_printf(bio_s_out,"Read BLOCK\n");
 640                                         }
 641                                 else if (i <= 0)
 642                                         {
 643                                         ERR_print_errors(bio_err);
 644                                         BIO_printf(bio_s_out,"DONE\n");
 645                                         ret=1;
 646                                         goto err;
 647                                         }
 648                                 else
 649                                         write(fileno(stdout),buf,
 650                                                 (unsigned int)i);
 651                                 }
 652                         }
 653                 }
 654 err:
 655         BIO_printf(bio_s_out,"shutting down SSL\n");
 656 #if 1
 657         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 658 #else
 659         SSL_shutdown(con);
 660 #endif
 661         if (con != NULL) SSL_free(con);
 662         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
 663         if (buf != NULL)
 664                 {
 665                 memset(buf,0,BUFSIZZ);
 666                 Free(buf);
 667                 }
 668         if (ret >= 0)
 669                 BIO_printf(bio_s_out,"ACCEPT\n");
 670         return(ret);
 671         }
 672
 673 static void close_accept_socket()
 674         {
 675         BIO_printf(bio_err,"shutdown accept socket\n");
 676         if (accept_socket >= 0)
 677                 {
 678                 SHUTDOWN2(accept_socket);
 679                 }
 680         }
 681
 682 static int init_ssl_connection(con)
 683 SSL *con;
 684         {
 685         int i;
 686         char *str;
 687         X509 *peer;
 688         int verify_error;
 689         MS_STATIC char buf[BUFSIZ];
 690
 691         if ((i=SSL_accept(con)) <= 0)
 692                 {
 693                 if (BIO_sock_should_retry(i))
 694                         {
 695                         BIO_printf(bio_s_out,"DELAY\n");
 696                         return(1);
 697                         }
 698
 699                 BIO_printf(bio_err,"ERROR\n");
 700                 verify_error=SSL_get_verify_result(con);
 701                 if (verify_error != X509_V_OK)
 702                         {
 703                         BIO_printf(bio_err,"verify error:%s\n",
 704                                 X509_verify_cert_error_string(verify_error));
 705                         }
 706                 else
 707                         ERR_print_errors(bio_err);
 708                 return(0);
 709                 }
 710
 711         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
 712
 713         peer=SSL_get_peer_certificate(con);
 714         if (peer != NULL)
 715                 {
 716                 BIO_printf(bio_s_out,"Client certificate\n");
 717                 PEM_write_bio_X509(bio_s_out,peer);
 718                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
 719                 BIO_printf(bio_s_out,"subject=%s\n",buf);
 720                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
 721                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
 722                 X509_free(peer);
 723                 }
 724
 725         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
 726                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
 727         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
 728         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
 729         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
 730         return(1);
 731         }
 732
 733 static DH *load_dh_param()
 734         {
 735         DH *ret=NULL;
 736         BIO *bio;
 737
 738 #ifndef NO_DH
 739         if ((bio=BIO_new_file(DH_PARAM,"r")) == NULL)
 740                 goto err;
 741         ret=PEM_read_bio_DHparams(bio,NULL,NULL);
 742 err:
 743         if (bio != NULL) BIO_free(bio);
 744 #endif
 745         return(ret);
 746         }
 747
 748 #if 0
 749 static int load_CA(ctx,file)
 750 SSL_CTX *ctx;
 751 char *file;
 752         {
 753         FILE *in;
 754         X509 *x=NULL;
 755
 756         if ((in=fopen(file,"r")) == NULL)
 757                 return(0);
 758
 759         for (;;)
 760                 {
 761                 if (PEM_read_X509(in,&x,NULL) == NULL)
 762                         break;
 763                 SSL_CTX_add_client_CA(ctx,x);
 764                 }
 765         if (x != NULL) X509_free(x);
 766         fclose(in);
 767         return(1);
 768         }
 769 #endif
 770
 771 static int www_body(hostname, s)
 772 char *hostname;
 773 int s;
 774         {
 775         char buf[1024];
 776         int ret=1;
 777         int i,j,k,blank,dot;
 778         struct stat st_buf;
 779         SSL *con;
 780         SSL_CIPHER *c;
 781         BIO *io,*ssl_bio,*sbio;
 782
 783         io=BIO_new(BIO_f_buffer());
 784         ssl_bio=BIO_new(BIO_f_ssl());
 785         if ((io == NULL) || (ssl_bio == NULL)) goto err;
 786
 787 #ifdef FIONBIO
 788         if (s_nbio)
 789                 {
 790                 unsigned int long sl=1;
 791
 792                 if (!s_quiet)
 793                         BIO_printf(bio_err,"turning on non blocking io\n");
 794                 socket_ioctl(s,FIONBIO,&sl);
 795                 }
 796 #endif
 797
 798         /* lets make the output buffer a reasonable size */
 799         if (!BIO_set_write_buffer_size(io,16*1024)) goto err;
 800
 801         if ((con=(SSL *)SSL_new(ctx)) == NULL) goto err;
 802
 803         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 804         if (s_nbio_test)
 805                 {
 806                 BIO *test;
 807
 808                 test=BIO_new(BIO_f_nbio_test());
 809                 sbio=BIO_push(test,sbio);
 810                 }
 811         SSL_set_bio(con,sbio,sbio);
 812         SSL_set_accept_state(con);
 813
 814         /* SSL_set_fd(con,s); */
 815         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
 816         BIO_push(io,ssl_bio);
 817
 818         if (s_debug)
 819                 {
 820                 con->debug=1;
 821                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 822                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 823                 }
 824
 825         blank=0;
 826         for (;;)
 827                 {
 828                 if (hack)
 829                         {
 830                         i=SSL_accept(con);
 831
 832                         switch (SSL_get_error(con,i))
 833                                 {
 834                         case SSL_ERROR_NONE:
 835                                 break;
 836                         case SSL_ERROR_WANT_WRITE:
 837                         case SSL_ERROR_WANT_READ:
 838                         case SSL_ERROR_WANT_X509_LOOKUP:
 839                                 continue;
 840                         case SSL_ERROR_SYSCALL:
 841                         case SSL_ERROR_SSL:
 842                         case SSL_ERROR_ZERO_RETURN:
 843                                 ret=1;
 844                                 goto err;
 845                                 break;
 846                                 }
 847
 848                         SSL_renegotiate(con);
 849                         SSL_write(con,NULL,0);
 850                         }
 851
 852                 i=BIO_gets(io,buf,sizeof(buf)-1);
 853                 if (i < 0) /* error */
 854                         {
 855                         if (!BIO_should_retry(io))
 856                                 {
 857                                 if (!s_quiet)
 858                                         ERR_print_errors(bio_err);
 859                                 goto err;
 860                                 }
 861                         else
 862                                 {
 863                                 BIO_printf(bio_s_out,"read R BLOCK\n");
 864 #ifndef MSDOS
 865                                 sleep(1);
 866 #endif
 867                                 continue;
 868                                 }
 869                         }
 870                 else if (i == 0) /* end of input */
 871                         {
 872                         ret=1;
 873                         goto end;
 874                         }
 875
 876                 /* else we have data */
 877                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
 878                         ((www == 2) && (strncmp("GET stats ",buf,10) == 0)))
 879                         {
 880                         char *p;
 881                         X509 *peer;
 882                         STACK *sk;
 883                         static char *space="                ";
 884
 885                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
 886                         BIO_puts(io,"<pre>\n");
 887 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
 888                         BIO_puts(io,"\n");
 889                         for (i=0; i<local_argc; i++)
 890                                 {
 891                                 BIO_puts(io,local_argv[i]);
 892                                 BIO_write(io," ",1);
 893                                 }
 894                         BIO_puts(io,"\n");
 895
 896                         /* The following is evil and should not really
 897                          * be done */
 898                         BIO_printf(io,"Ciphers supported in s_server binary\n");
 899                         sk=SSL_get_ciphers(con);
 900                         j=sk_num(sk);
 901                         for (i=0; i<j; i++)
 902                                 {
 903                                 c=(SSL_CIPHER *)sk_value(sk,i);
 904                                 BIO_printf(io,"%s:%-25s",
 905                                         SSL_CIPHER_get_version(c),
 906                                         SSL_CIPHER_get_name(c));
 907                                 if ((((i+1)%3) == 0) && (i+1 != j))
 908                                         BIO_puts(io,"\n");
 909                                 }
 910                         BIO_puts(io,"\n");
 911                         p=SSL_get_shared_ciphers(con,buf,sizeof(buf));
 912                         if (p != NULL)
 913                                 {
 914                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
 915                                 j=i=0;
 916                                 while (*p)
 917                                         {
 918                                         if (*p == ':')
 919                                                 {
 920                                                 BIO_write(io,space,15-j);
 921                                                 i++;
 922                                                 j=0;
 923                                                 BIO_write(io,((i%3)?" ":"\n"),1);
 924                                                 }
 925                                         else
 926                                                 {
 927                                                 BIO_write(io,p,1);
 928                                                 j++;
 929                                                 }
 930                                         p++;
 931                                         }
 932                                 BIO_puts(io,"\n");
 933                                 }
 934                         BIO_printf(io,((con->hit)
 935                                 ?"---\nReused, "
 936                                 :"---\nNew, "));
 937                         c=SSL_get_current_cipher(con);
 938                         BIO_printf(io,"SSLv%d, Cipher is %s\n",
 939                                 SSL_CIPHER_get_version(c),
 940                                 SSL_CIPHER_get_name(c));
 941                         SSL_SESSION_print(io,SSL_get_session(con));
 942                         BIO_printf(io,"---\n");
 943                         print_stats(io,SSL_get_SSL_CTX(con));
 944                         BIO_printf(io,"---\n");
 945                         peer=SSL_get_peer_certificate(con);
 946                         if (peer != NULL)
 947                                 {
 948                                 BIO_printf(io,"Client certificate\n");
 949                                 X509_print(io,peer);
 950                                 PEM_write_bio_X509(io,peer);
 951                                 }
 952                         else
 953                                 BIO_puts(io,"no client certificate available\n");
 954                         break;
 955                         }
 956                 else if ((www == 2) && (strncmp("GET ",buf,4) == 0))
 957                         {
 958                         BIO *file;
 959                         char *p,*e;
 960                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
 961
 962                         /* skip the '/' */
 963                         p= &(buf[5]);
 964                         dot=0;
 965                         for (e=p; *e != '\0'; e++)
 966                                 {
 967                                 if (e[0] == ' ') break;
 968                                 if (    (e[0] == '.') &&
 969                                         (strncmp(&(e[-1]),"/../",4) == 0))
 970                                         dot=1;
 971                                 }
 972
 973                         if (*e == '\0')
 974                                 {
 975                                 BIO_puts(io,text);
 976                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
 977                                 break;
 978                                 }
 979                         *e='\0';
 980
 981                         if (dot)
 982                                 {
 983                                 BIO_puts(io,text);
 984                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
 985                                 break;
 986                                 }
 987
 988                         if (*p == '/')
 989                                 {
 990                                 BIO_puts(io,text);
 991                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
 992                                 break;
 993                                 }
 994
 995                         /* append if a directory lookup */
 996                         if (e[-1] == '/')
 997                                 strcat(p,"index.html");
 998
 999                         /* if a directory, do the index thang */
1000                         if (stat(p,&st_buf) < 0)
1001                                 {
1002                                 BIO_puts(io,text);
1003                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1004                                 ERR_print_errors(io);
1005                                 break;
1006                                 }
1007                         if (S_ISDIR(st_buf.st_mode))
1008                                 {
1009                                 strcat(p,"/index.html");
1010                                 }
1011
1012                         if ((file=BIO_new_file(p,"r")) == NULL)
1013                                 {
1014                                 BIO_puts(io,text);
1015                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1016                                 ERR_print_errors(io);
1017                                 break;
1018                                 }
1019
1020                         if (!s_quiet)
1021                                 BIO_printf(bio_err,"FILE:%s\n",p);
1022
1023                         i=strlen(p);
1024                         if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1025                                 ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1026                                 ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1027                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1028                         else
1029                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1030                         /* send the file */
1031                         for (;;)
1032                                 {
1033                                 i=BIO_read(file,buf,1024);
1034                                 if (i <= 0) break;
1035
1036                                 for (j=0; j<i; )
1037                                         {
1038                                         k=BIO_write(io,&(buf[j]),i-j);
1039                                         if (k <= 0)
1040                                                 {
1041                                                 if (!BIO_should_retry(io))
1042                                                         break;
1043                                                 else
1044                                                         {
1045                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1046                                                         }
1047                                                 }
1048                                         else
1049                                                 {
1050                                                 j+=k;
1051                                                 }
1052                                         }
1053                                 }
1054                         BIO_free(file);
1055                         break;
1056                         }
1057                 }
1058
1059         for (;;)
1060                 {
1061                 i=(int)BIO_flush(io);
1062                 if (i <= 0)
1063                         {
1064                         if (!BIO_should_retry(io))
1065                                 break;
1066                         }
1067                 else
1068                         break;
1069                 }
1070 end:
1071 #if 0
1072         /* make sure we re-use sessions */
1073         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1074 #else
1075         /* This kills performace */
1076         SSL_shutdown(con);
1077 #endif
1078
1079 err:
1080
1081         if (ret >= 0)
1082                 BIO_printf(bio_s_out,"ACCEPT\n");
1083
1084         if (io != NULL) BIO_free_all(io);
1085 /*      if (ssl_bio != NULL) BIO_free(ssl_bio); */
1086         return(ret);
1087         }
1088
1089 static RSA MS_CALLBACK *tmp_rsa_cb(s,export)
1090 SSL *s;
1091 int export;
1092         {
1093         static RSA *rsa_tmp=NULL;
1094
1095         if (rsa_tmp == NULL)
1096                 {
1097                 if (!s_quiet)
1098                         {
1099                         BIO_printf(bio_err,"Generating temp (512 bit) RSA key...");
1100                         BIO_flush(bio_err);
1101                         }
1102 #ifndef NO_RSA
1103                 rsa_tmp=RSA_generate_key(512,RSA_F4,NULL);
1104 #endif
1105                 if (!s_quiet)
1106                         {
1107                         BIO_printf(bio_err,"\n");
1108                         BIO_flush(bio_err);
1109                         }
1110                 }
1111         return(rsa_tmp);
1112         }