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 <openssl/lhash.h>
  68 #include <openssl/bn.h>
  69 #define USE_SOCKETS
  70 #include "apps.h"
  71 #include <openssl/err.h>
  72 #include <openssl/pem.h>
  73 #include <openssl/x509.h>
  74 #include <openssl/ssl.h>
  75 #include "s_apps.h"
  76
  77 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export,int keylength);
  78 static int sv_body(char *hostname, int s, unsigned char *context);
  79 static int www_body(char *hostname, int s, unsigned char *context);
  80 static void close_accept_socket(void );
  81 static void sv_usage(void);
  82 static int init_ssl_connection(SSL *s);
  83 static void print_stats(BIO *bp,SSL_CTX *ctx);
  84 #ifndef NO_DH
  85 static DH *load_dh_param(void );
  86 static DH *get_dh512(void);
  87 #endif
  88 /* static void s_server_init(void);*/
  89
  90 #ifndef S_ISDIR
  91 #define S_ISDIR(a)      (((a) & _S_IFMT) == _S_IFDIR)
  92 #endif
  93
  94 #ifndef NO_DH
  95 static unsigned char dh512_p[]={
  96         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
  97         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
  98         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
  99         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
 100         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
 101         0x47,0x74,0xE8,0x33,
 102         };
 103 static unsigned char dh512_g[]={
 104         0x02,
 105         };
 106
 107 static DH *get_dh512(void)
 108         {
 109         DH *dh=NULL;
 110
 111         if ((dh=DH_new()) == NULL) return(NULL);
 112         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
 113         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
 114         if ((dh->p == NULL) || (dh->g == NULL))
 115                 return(NULL);
 116         return(dh);
 117         }
 118 #endif
 119
 120 /* static int load_CA(SSL_CTX *ctx, char *file);*/
 121
 122 #undef BUFSIZZ
 123 #define BUFSIZZ 16*1024
 124 static int bufsize=32;
 125 static int accept_socket= -1;
 126
 127 #define TEST_CERT       "server.pem"
 128 #undef PROG
 129 #define PROG            s_server_main
 130
 131 #define DH_PARAM        "server.pem"
 132
 133 extern int verify_depth;
 134
 135 static char *cipher=NULL;
 136 static int s_server_verify=SSL_VERIFY_NONE;
 137 static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
 138 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
 139 #ifdef FIONBIO
 140 static int s_nbio=0;
 141 #endif
 142 static int s_nbio_test=0;
 143 static SSL_CTX *ctx=NULL;
 144 static int www=0;
 145
 146 static BIO *bio_s_out=NULL;
 147 static int s_debug=0;
 148 static int s_quiet=0;
 149
 150 #if 0
 151 static void s_server_init(void)
 152         {
 153         cipher=NULL;
 154         s_server_verify=SSL_VERIFY_NONE;
 155         s_dcert_file=NULL;
 156         s_dkey_file=NULL;
 157         s_cert_file=TEST_CERT;
 158         s_key_file=NULL;
 159 #ifdef FIONBIO
 160         s_nbio=0;
 161 #endif
 162         s_nbio_test=0;
 163         ctx=NULL;
 164         www=0;
 165
 166         bio_s_out=NULL;
 167         s_debug=0;
 168         s_quiet=0;
 169         }
 170 #endif
 171
 172 static void sv_usage(void)
 173         {
 174         BIO_printf(bio_err,"usage: s_server [args ...]\n");
 175         BIO_printf(bio_err,"\n");
 176         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
 177         BIO_printf(bio_err," -context arg  - set session ID context\n");
 178         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 179         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
 180         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 181         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
 182         BIO_printf(bio_err," -key arg      - RSA file to use, PEM format assumed, in cert file if\n");
 183         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
 184         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
 185         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
 186 #ifdef FIONBIO
 187         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 188 #endif
 189         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
 190         BIO_printf(bio_err," -debug        - Print more output\n");
 191         BIO_printf(bio_err," -state        - Print the SSL states\n");
 192         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 193         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 194         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
 195         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
 196         BIO_printf(bio_err," -quiet        - No server output\n");
 197         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
 198         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
 199         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
 200         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
 201         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
 202         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
 203         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
 204         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatability\n");
 205         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
 206         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
 207         }
 208
 209 static int local_argc=0;
 210 static char **local_argv;
 211 static int hack=0;
 212
 213 int MAIN(int argc, char *argv[])
 214         {
 215         short port=PORT;
 216         char *CApath=NULL,*CAfile=NULL;
 217         char *context = NULL;
 218         int badop=0,bugs=0;
 219         int ret=1;
 220         int off=0;
 221         int no_tmp_rsa=0,nocert=0;
 222         int state=0;
 223         SSL_METHOD *meth=NULL;
 224 #ifndef NO_DH
 225         DH *dh=NULL;
 226 #endif
 227
 228 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 229         meth=SSLv23_server_method();
 230 #elif !defined(NO_SSL3)
 231         meth=SSLv3_server_method();
 232 #elif !defined(NO_SSL2)
 233         meth=SSLv2_server_method();
 234 #endif
 235
 236         local_argc=argc;
 237         local_argv=argv;
 238
 239         apps_startup();
 240         s_quiet=0;
 241         s_debug=0;
 242
 243         if (bio_err == NULL)
 244                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 245
 246         verify_depth=0;
 247 #ifdef FIONBIO
 248         s_nbio=0;
 249 #endif
 250         s_nbio_test=0;
 251
 252         argc--;
 253         argv++;
 254
 255         while (argc >= 1)
 256                 {
 257                 if      ((strcmp(*argv,"-port") == 0) ||
 258                          (strcmp(*argv,"-accept") == 0))
 259                         {
 260                         if (--argc < 1) goto bad;
 261                         if (!extract_port(*(++argv),&port))
 262                                 goto bad;
 263                         }
 264                 else if (strcmp(*argv,"-verify") == 0)
 265                         {
 266                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 267                         if (--argc < 1) goto bad;
 268                         verify_depth=atoi(*(++argv));
 269                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 270                         }
 271                 else if (strcmp(*argv,"-Verify") == 0)
 272                         {
 273                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
 274                                 SSL_VERIFY_CLIENT_ONCE;
 275                         if (--argc < 1) goto bad;
 276                         verify_depth=atoi(*(++argv));
 277                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
 278                         }
 279                 else if (strcmp(*argv,"-context") == 0)
 280                         {
 281                         if (--argc < 1) goto bad;
 282                         context= *(++argv);
 283                         }
 284                 else if (strcmp(*argv,"-cert") == 0)
 285                         {
 286                         if (--argc < 1) goto bad;
 287                         s_cert_file= *(++argv);
 288                         }
 289                 else if (strcmp(*argv,"-key") == 0)
 290                         {
 291                         if (--argc < 1) goto bad;
 292                         s_key_file= *(++argv);
 293                         }
 294                 else if (strcmp(*argv,"-dcert") == 0)
 295                         {
 296                         if (--argc < 1) goto bad;
 297                         s_dcert_file= *(++argv);
 298                         }
 299                 else if (strcmp(*argv,"-dkey") == 0)
 300                         {
 301                         if (--argc < 1) goto bad;
 302                         s_dkey_file= *(++argv);
 303                         }
 304                 else if (strcmp(*argv,"-nocert") == 0)
 305                         {
 306                         nocert=1;
 307                         }
 308                 else if (strcmp(*argv,"-CApath") == 0)
 309                         {
 310                         if (--argc < 1) goto bad;
 311                         CApath= *(++argv);
 312                         }
 313                 else if (strcmp(*argv,"-cipher") == 0)
 314                         {
 315                         if (--argc < 1) goto bad;
 316                         cipher= *(++argv);
 317                         }
 318                 else if (strcmp(*argv,"-CAfile") == 0)
 319                         {
 320                         if (--argc < 1) goto bad;
 321                         CAfile= *(++argv);
 322                         }
 323 #ifdef FIONBIO
 324                 else if (strcmp(*argv,"-nbio") == 0)
 325                         { s_nbio=1; }
 326 #endif
 327                 else if (strcmp(*argv,"-nbio_test") == 0)
 328                         {
 329 #ifdef FIONBIO
 330                         s_nbio=1;
 331 #endif
 332                         s_nbio_test=1;
 333                         }
 334                 else if (strcmp(*argv,"-debug") == 0)
 335                         { s_debug=1; }
 336                 else if (strcmp(*argv,"-hack") == 0)
 337                         { hack=1; }
 338                 else if (strcmp(*argv,"-state") == 0)
 339                         { state=1; }
 340                 else if (strcmp(*argv,"-quiet") == 0)
 341                         { s_quiet=1; }
 342                 else if (strcmp(*argv,"-bugs") == 0)
 343                         { bugs=1; }
 344                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
 345                         { no_tmp_rsa=1; }
 346                 else if (strcmp(*argv,"-www") == 0)
 347                         { www=1; }
 348                 else if (strcmp(*argv,"-WWW") == 0)
 349                         { www=2; }
 350                 else if (strcmp(*argv,"-no_ssl2") == 0)
 351                         { off|=SSL_OP_NO_SSLv2; }
 352                 else if (strcmp(*argv,"-no_ssl3") == 0)
 353                         { off|=SSL_OP_NO_SSLv3; }
 354                 else if (strcmp(*argv,"-no_tls1") == 0)
 355                         { off|=SSL_OP_NO_TLSv1; }
 356 #ifndef NO_SSL2
 357                 else if (strcmp(*argv,"-ssl2") == 0)
 358                         { meth=SSLv2_server_method(); }
 359 #endif
 360 #ifndef NO_SSL3
 361                 else if (strcmp(*argv,"-ssl3") == 0)
 362                         { meth=SSLv3_server_method(); }
 363 #endif
 364 #ifndef NO_TLS1
 365                 else if (strcmp(*argv,"-tls1") == 0)
 366                         { meth=TLSv1_server_method(); }
 367 #endif
 368                 else
 369                         {
 370                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 371                         badop=1;
 372                         break;
 373                         }
 374                 argc--;
 375                 argv++;
 376                 }
 377         if (badop)
 378                 {
 379 bad:
 380                 sv_usage();
 381                 goto end;
 382                 }
 383
 384         if (bio_s_out == NULL)
 385                 {
 386                 if (s_quiet && !s_debug)
 387                         {
 388                         bio_s_out=BIO_new(BIO_s_null());
 389                         }
 390                 else
 391                         {
 392                         if (bio_s_out == NULL)
 393                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 394                         }
 395                 }
 396
 397 #if !defined(NO_RSA) || !defined(NO_DSA)
 398         if (nocert)
 399 #endif
 400                 {
 401                 s_cert_file=NULL;
 402                 s_key_file=NULL;
 403                 s_dcert_file=NULL;
 404                 s_dkey_file=NULL;
 405                 }
 406
 407         SSL_load_error_strings();
 408         SSLeay_add_ssl_algorithms();
 409
 410         ctx=SSL_CTX_new(meth);
 411         if (ctx == NULL)
 412                 {
 413                 ERR_print_errors(bio_err);
 414                 goto end;
 415                 }
 416
 417         SSL_CTX_set_quiet_shutdown(ctx,1);
 418         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
 419         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
 420         SSL_CTX_set_options(ctx,off);
 421         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);
 422
 423         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 424
 425         SSL_CTX_sess_set_cache_size(ctx,128);
 426
 427 #if 0
 428         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
 429 #endif
 430
 431 #if 0
 432         if (s_cert_file == NULL)
 433                 {
 434                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
 435                 goto end;
 436                 }
 437 #endif
 438
 439         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 440                 (!SSL_CTX_set_default_verify_paths(ctx)))
 441                 {
 442                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
 443                 ERR_print_errors(bio_err);
 444                 /* goto end; */
 445                 }
 446
 447 #ifndef NO_DH
 448         /* EAY EAY EAY evil hack */
 449         dh=load_dh_param();
 450         if (dh != NULL)
 451                 {
 452                 BIO_printf(bio_s_out,"Setting temp DH parameters\n");
 453                 }
 454         else
 455                 {
 456                 BIO_printf(bio_s_out,"Using default temp DH parameters\n");
 457                 dh=get_dh512();
 458                 }
 459         BIO_flush(bio_s_out);
 460
 461         SSL_CTX_set_tmp_dh(ctx,dh);
 462         DH_free(dh);
 463 #endif
 464
 465         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
 466                 goto end;
 467         if (s_dcert_file != NULL)
 468                 {
 469                 if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
 470                         goto end;
 471                 }
 472
 473 #if 1
 474         SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
 475 #else
 476         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
 477                 {
 478                 RSA *rsa;
 479
 480                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
 481                 BIO_flush(bio_s_out);
 482
 483                 rsa=RSA_generate_key(512,RSA_F4,NULL);
 484
 485                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
 486                         {
 487                         ERR_print_errors(bio_err);
 488                         goto end;
 489                         }
 490                 RSA_free(rsa);
 491                 BIO_printf(bio_s_out,"\n");
 492                 }
 493 #endif
 494
 495         if (cipher != NULL)
 496                 SSL_CTX_set_cipher_list(ctx,cipher);
 497         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
 498
 499         SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
 500
 501         BIO_printf(bio_s_out,"ACCEPT\n");
 502         if (www)
 503                 do_server(port,&accept_socket,www_body, context);
 504         else
 505                 do_server(port,&accept_socket,sv_body, context);
 506         print_stats(bio_s_out,ctx);
 507         ret=0;
 508 end:
 509         if (ctx != NULL) SSL_CTX_free(ctx);
 510         if (bio_s_out != NULL)
 511                 {
 512                 BIO_free(bio_s_out);
 513                 bio_s_out=NULL;
 514                 }
 515         EXIT(ret);
 516         }
 517
 518 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
 519         {
 520         BIO_printf(bio,"%4ld items in the session cache\n",
 521                 SSL_CTX_sess_number(ssl_ctx));
 522         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
 523                 SSL_CTX_sess_connect(ssl_ctx));
 524         BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
 525                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
 526         BIO_printf(bio,"%4d client connects that finished\n",
 527                 SSL_CTX_sess_connect_good(ssl_ctx));
 528         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
 529                 SSL_CTX_sess_accept(ssl_ctx));
 530         BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
 531                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
 532         BIO_printf(bio,"%4d server accepts that finished\n",
 533                 SSL_CTX_sess_accept_good(ssl_ctx));
 534         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
 535         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
 536         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
 537         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
 538         BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
 539                 SSL_CTX_sess_cache_full(ssl_ctx),
 540                 SSL_CTX_sess_get_cache_size(ssl_ctx));
 541         }
 542
 543 static int sv_body(char *hostname, int s, unsigned char *context)
 544         {
 545         char *buf=NULL;
 546         fd_set readfds;
 547         int ret=1,width;
 548         int k,i;
 549         unsigned long l;
 550         SSL *con=NULL;
 551         BIO *sbio;
 552
 553         if ((buf=Malloc(bufsize)) == NULL)
 554                 {
 555                 BIO_printf(bio_err,"out of memory\n");
 556                 goto err;
 557                 }
 558 #ifdef FIONBIO
 559         if (s_nbio)
 560                 {
 561                 unsigned long sl=1;
 562
 563                 if (!s_quiet)
 564                         BIO_printf(bio_err,"turning on non blocking io\n");
 565                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
 566                         ERR_print_errors(bio_err);
 567                 }
 568 #endif
 569
 570         if (con == NULL) {
 571                 con=(SSL *)SSL_new(ctx);
 572                 if(context)
 573                       SSL_set_session_id_context(con, context,
 574                                                  strlen((char *)context));
 575         }
 576         SSL_clear(con);
 577
 578         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 579         if (s_nbio_test)
 580                 {
 581                 BIO *test;
 582
 583                 test=BIO_new(BIO_f_nbio_test());
 584                 sbio=BIO_push(test,sbio);
 585                 }
 586         SSL_set_bio(con,sbio,sbio);
 587         SSL_set_accept_state(con);
 588         /* SSL_set_fd(con,s); */
 589
 590         if (s_debug)
 591                 {
 592                 con->debug=1;
 593                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 594                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 595                 }
 596
 597         width=s+1;
 598         for (;;)
 599                 {
 600                 FD_ZERO(&readfds);
 601 #ifndef WINDOWS
 602                 FD_SET(fileno(stdin),&readfds);
 603 #endif
 604                 FD_SET(s,&readfds);
 605                 i=select(width,&readfds,NULL,NULL,NULL);
 606                 if (i <= 0) continue;
 607                 if (FD_ISSET(fileno(stdin),&readfds))
 608                         {
 609                         i=read(fileno(stdin),buf,bufsize);
 610                         if (!s_quiet)
 611                                 {
 612                                 if ((i <= 0) || (buf[0] == 'Q'))
 613                                         {
 614                                         BIO_printf(bio_s_out,"DONE\n");
 615                                         SHUTDOWN(s);
 616                                         close_accept_socket();
 617                                         ret= -11;
 618                                         goto err;
 619                                         }
 620                                 if ((i <= 0) || (buf[0] == 'q'))
 621                                         {
 622                                         BIO_printf(bio_s_out,"DONE\n");
 623                                         SHUTDOWN(s);
 624         /*                              close_accept_socket();
 625                                         ret= -11;*/
 626                                         goto err;
 627                                         }
 628                                 if ((buf[0] == 'r') &&
 629                                         ((buf[1] == '\n') || (buf[1] == '\r')))
 630                                         {
 631                                         SSL_renegotiate(con);
 632                                         i=SSL_do_handshake(con);
 633                                         printf("SSL_do_handshake -> %d\n",i);
 634                                         i=0; /*13; */
 635                                         continue;
 636                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
 637                                         }
 638                                 if ((buf[0] == 'R') &&
 639                                         ((buf[1] == '\n') || (buf[1] == '\r')))
 640                                         {
 641                                         SSL_set_verify(con,
 642                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
 643                                         SSL_renegotiate(con);
 644                                         i=SSL_do_handshake(con);
 645                                         printf("SSL_do_handshake -> %d\n",i);
 646                                         i=0; /* 13; */
 647                                         continue;
 648                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
 649                                         }
 650                                 if (buf[0] == 'P')
 651                                         {
 652                                         static char *str="Lets print some clear text\n";
 653                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
 654                                         }
 655                                 if (buf[0] == 'S')
 656                                         {
 657                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
 658                                         }
 659                                 }
 660                         l=k=0;
 661                         for (;;)
 662                                 {
 663                                 /* should do a select for the write */
 664 #ifdef RENEG
 665 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
 666 #endif
 667                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
 668                                 switch (SSL_get_error(con,k))
 669                                         {
 670                                 case SSL_ERROR_NONE:
 671                                         break;
 672                                 case SSL_ERROR_WANT_WRITE:
 673                                 case SSL_ERROR_WANT_READ:
 674                                 case SSL_ERROR_WANT_X509_LOOKUP:
 675                                         BIO_printf(bio_s_out,"Write BLOCK\n");
 676                                         break;
 677                                 case SSL_ERROR_SYSCALL:
 678                                 case SSL_ERROR_SSL:
 679                                         BIO_printf(bio_s_out,"ERROR\n");
 680                                         ERR_print_errors(bio_err);
 681                                         ret=1;
 682                                         goto err;
 683                                         /* break; */
 684                                 case SSL_ERROR_ZERO_RETURN:
 685                                         BIO_printf(bio_s_out,"DONE\n");
 686                                         ret=1;
 687                                         goto err;
 688                                         }
 689                                 l+=k;
 690                                 i-=k;
 691                                 if (i <= 0) break;
 692                                 }
 693                         }
 694                 if (FD_ISSET(s,&readfds))
 695                         {
 696                         if (!SSL_is_init_finished(con))
 697                                 {
 698                                 i=init_ssl_connection(con);
 699
 700                                 if (i < 0)
 701                                         {
 702                                         ret=0;
 703                                         goto err;
 704                                         }
 705                                 else if (i == 0)
 706                                         {
 707                                         ret=1;
 708                                         goto err;
 709                                         }
 710                                 }
 711                         else
 712                                 {
 713 again:
 714                                 i=SSL_read(con,(char *)buf,bufsize);
 715                                 switch (SSL_get_error(con,i))
 716                                         {
 717                                 case SSL_ERROR_NONE:
 718                                         write(fileno(stdout),buf,
 719                                                 (unsigned int)i);
 720                                         if (SSL_pending(con)) goto again;
 721                                         break;
 722                                 case SSL_ERROR_WANT_WRITE:
 723                                 case SSL_ERROR_WANT_READ:
 724                                 case SSL_ERROR_WANT_X509_LOOKUP:
 725                                         BIO_printf(bio_s_out,"Read BLOCK\n");
 726                                         break;
 727                                 case SSL_ERROR_SYSCALL:
 728                                 case SSL_ERROR_SSL:
 729                                         BIO_printf(bio_s_out,"ERROR\n");
 730                                         ERR_print_errors(bio_err);
 731                                         ret=1;
 732                                         goto err;
 733                                 case SSL_ERROR_ZERO_RETURN:
 734                                         BIO_printf(bio_s_out,"DONE\n");
 735                                         ret=1;
 736                                         goto err;
 737                                         }
 738                                 }
 739                         }
 740                 }
 741 err:
 742         BIO_printf(bio_s_out,"shutting down SSL\n");
 743 #if 1
 744         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 745 #else
 746         SSL_shutdown(con);
 747 #endif
 748         if (con != NULL) SSL_free(con);
 749         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
 750         if (buf != NULL)
 751                 {
 752                 memset(buf,0,bufsize);
 753                 Free(buf);
 754                 }
 755         if (ret >= 0)
 756                 BIO_printf(bio_s_out,"ACCEPT\n");
 757         return(ret);
 758         }
 759
 760 static void close_accept_socket(void)
 761         {
 762         BIO_printf(bio_err,"shutdown accept socket\n");
 763         if (accept_socket >= 0)
 764                 {
 765                 SHUTDOWN2(accept_socket);
 766                 }
 767         }
 768
 769 static int init_ssl_connection(SSL *con)
 770         {
 771         int i;
 772         const char *str;
 773         X509 *peer;
 774         long verify_error;
 775         MS_STATIC char buf[BUFSIZ];
 776
 777         if ((i=SSL_accept(con)) <= 0)
 778                 {
 779                 if (BIO_sock_should_retry(i))
 780                         {
 781                         BIO_printf(bio_s_out,"DELAY\n");
 782                         return(1);
 783                         }
 784
 785                 BIO_printf(bio_err,"ERROR\n");
 786                 verify_error=SSL_get_verify_result(con);
 787                 if (verify_error != X509_V_OK)
 788                         {
 789                         BIO_printf(bio_err,"verify error:%s\n",
 790                                 X509_verify_cert_error_string(verify_error));
 791                         }
 792                 else
 793                         ERR_print_errors(bio_err);
 794                 return(0);
 795                 }
 796
 797         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
 798
 799         peer=SSL_get_peer_certificate(con);
 800         if (peer != NULL)
 801                 {
 802                 BIO_printf(bio_s_out,"Client certificate\n");
 803                 PEM_write_bio_X509(bio_s_out,peer);
 804                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
 805                 BIO_printf(bio_s_out,"subject=%s\n",buf);
 806                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
 807                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
 808                 X509_free(peer);
 809                 }
 810
 811         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
 812                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
 813         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
 814         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
 815         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
 816         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
 817                 TLS1_FLAGS_TLS_PADDING_BUG)
 818                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
 819
 820         return(1);
 821         }
 822
 823 #ifndef NO_DH
 824 static DH *load_dh_param(void)
 825         {
 826         DH *ret=NULL;
 827         BIO *bio;
 828
 829         if ((bio=BIO_new_file(DH_PARAM,"r")) == NULL)
 830                 goto err;
 831         ret=PEM_read_bio_DHparams(bio,NULL,NULL);
 832 err:
 833         if (bio != NULL) BIO_free(bio);
 834         return(ret);
 835         }
 836 #endif
 837
 838 #if 0
 839 static int load_CA(SSL_CTX *ctx, char *file)
 840         {
 841         FILE *in;
 842         X509 *x=NULL;
 843
 844         if ((in=fopen(file,"r")) == NULL)
 845                 return(0);
 846
 847         for (;;)
 848                 {
 849                 if (PEM_read_X509(in,&x,NULL) == NULL)
 850                         break;
 851                 SSL_CTX_add_client_CA(ctx,x);
 852                 }
 853         if (x != NULL) X509_free(x);
 854         fclose(in);
 855         return(1);
 856         }
 857 #endif
 858
 859 static int www_body(char *hostname, int s, unsigned char *context)
 860         {
 861         char *buf=NULL;
 862         int ret=1;
 863         int i,j,k,blank,dot;
 864         struct stat st_buf;
 865         SSL *con;
 866         SSL_CIPHER *c;
 867         BIO *io,*ssl_bio,*sbio;
 868         long total_bytes;
 869
 870         buf=Malloc(bufsize);
 871         if (buf == NULL) return(0);
 872         io=BIO_new(BIO_f_buffer());
 873         ssl_bio=BIO_new(BIO_f_ssl());
 874         if ((io == NULL) || (ssl_bio == NULL)) goto err;
 875
 876 #ifdef FIONBIO
 877         if (s_nbio)
 878                 {
 879                 unsigned long sl=1;
 880
 881                 if (!s_quiet)
 882                         BIO_printf(bio_err,"turning on non blocking io\n");
 883                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
 884                         ERR_print_errors(bio_err);
 885                 }
 886 #endif
 887
 888         /* lets make the output buffer a reasonable size */
 889         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
 890
 891         if ((con=(SSL *)SSL_new(ctx)) == NULL) goto err;
 892         if(context) SSL_set_session_id_context(con, context,
 893                                                strlen((char *)context));
 894
 895         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 896         if (s_nbio_test)
 897                 {
 898                 BIO *test;
 899
 900                 test=BIO_new(BIO_f_nbio_test());
 901                 sbio=BIO_push(test,sbio);
 902                 }
 903         SSL_set_bio(con,sbio,sbio);
 904         SSL_set_accept_state(con);
 905
 906         /* SSL_set_fd(con,s); */
 907         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
 908         BIO_push(io,ssl_bio);
 909
 910         if (s_debug)
 911                 {
 912                 con->debug=1;
 913                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 914                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 915                 }
 916
 917         blank=0;
 918         for (;;)
 919                 {
 920                 if (hack)
 921                         {
 922                         i=SSL_accept(con);
 923
 924                         switch (SSL_get_error(con,i))
 925                                 {
 926                         case SSL_ERROR_NONE:
 927                                 break;
 928                         case SSL_ERROR_WANT_WRITE:
 929                         case SSL_ERROR_WANT_READ:
 930                         case SSL_ERROR_WANT_X509_LOOKUP:
 931                                 continue;
 932                         case SSL_ERROR_SYSCALL:
 933                         case SSL_ERROR_SSL:
 934                         case SSL_ERROR_ZERO_RETURN:
 935                                 ret=1;
 936                                 goto err;
 937                                 /* break; */
 938                                 }
 939
 940                         SSL_renegotiate(con);
 941                         SSL_write(con,NULL,0);
 942                         }
 943
 944                 i=BIO_gets(io,buf,bufsize-1);
 945                 if (i < 0) /* error */
 946                         {
 947                         if (!BIO_should_retry(io))
 948                                 {
 949                                 if (!s_quiet)
 950                                         ERR_print_errors(bio_err);
 951                                 goto err;
 952                                 }
 953                         else
 954                                 {
 955                                 BIO_printf(bio_s_out,"read R BLOCK\n");
 956 #ifndef MSDOS
 957                                 sleep(1);
 958 #endif
 959                                 continue;
 960                                 }
 961                         }
 962                 else if (i == 0) /* end of input */
 963                         {
 964                         ret=1;
 965                         goto end;
 966                         }
 967
 968                 /* else we have data */
 969                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
 970                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
 971                         {
 972                         char *p;
 973                         X509 *peer;
 974                         STACK_OF(SSL_CIPHER) *sk;
 975                         static char *space="                          ";
 976
 977                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
 978                         BIO_puts(io,"<HTML><BODY BGCOLOR=ffffff>\n");
 979                         BIO_puts(io,"<pre>\n");
 980 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
 981                         BIO_puts(io,"\n");
 982                         for (i=0; i<local_argc; i++)
 983                                 {
 984                                 BIO_puts(io,local_argv[i]);
 985                                 BIO_write(io," ",1);
 986                                 }
 987                         BIO_puts(io,"\n");
 988
 989                         /* The following is evil and should not really
 990                          * be done */
 991                         BIO_printf(io,"Ciphers supported in s_server binary\n");
 992                         sk=SSL_get_ciphers(con);
 993                         j=sk_SSL_CIPHER_num(sk);
 994                         for (i=0; i<j; i++)
 995                                 {
 996                                 c=sk_SSL_CIPHER_value(sk,i);
 997                                 BIO_printf(io,"%-11s:%-25s",
 998                                         SSL_CIPHER_get_version(c),
 999                                         SSL_CIPHER_get_name(c));
1000                                 if ((((i+1)%2) == 0) && (i+1 != j))
1001                                         BIO_puts(io,"\n");
1002                                 }
1003                         BIO_puts(io,"\n");
1004                         p=SSL_get_shared_ciphers(con,buf,bufsize);
1005                         if (p != NULL)
1006                                 {
1007                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1008                                 j=i=0;
1009                                 while (*p)
1010                                         {
1011                                         if (*p == ':')
1012                                                 {
1013                                                 BIO_write(io,space,26-j);
1014                                                 i++;
1015                                                 j=0;
1016                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1017                                                 }
1018                                         else
1019                                                 {
1020                                                 BIO_write(io,p,1);
1021                                                 j++;
1022                                                 }
1023                                         p++;
1024                                         }
1025                                 BIO_puts(io,"\n");
1026                                 }
1027                         BIO_printf(io,((con->hit)
1028                                 ?"---\nReused, "
1029                                 :"---\nNew, "));
1030                         c=SSL_get_current_cipher(con);
1031                         BIO_printf(io,"%s, Cipher is %s\n",
1032                                 SSL_CIPHER_get_version(c),
1033                                 SSL_CIPHER_get_name(c));
1034                         SSL_SESSION_print(io,SSL_get_session(con));
1035                         BIO_printf(io,"---\n");
1036                         print_stats(io,SSL_get_SSL_CTX(con));
1037                         BIO_printf(io,"---\n");
1038                         peer=SSL_get_peer_certificate(con);
1039                         if (peer != NULL)
1040                                 {
1041                                 BIO_printf(io,"Client certificate\n");
1042                                 X509_print(io,peer);
1043                                 PEM_write_bio_X509(io,peer);
1044                                 }
1045                         else
1046                                 BIO_puts(io,"no client certificate available\n");
1047                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1048                         break;
1049                         }
1050                 else if ((www == 2) && (strncmp("GET ",buf,4) == 0))
1051                         {
1052                         BIO *file;
1053                         char *p,*e;
1054                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1055
1056                         /* skip the '/' */
1057                         p= &(buf[5]);
1058                         dot=0;
1059                         for (e=p; *e != '\0'; e++)
1060                                 {
1061                                 if (e[0] == ' ') break;
1062                                 if (    (e[0] == '.') &&
1063                                         (strncmp(&(e[-1]),"/../",4) == 0))
1064                                         dot=1;
1065                                 }
1066
1067
1068                         if (*e == '\0')
1069                                 {
1070                                 BIO_puts(io,text);
1071                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1072                                 break;
1073                                 }
1074                         *e='\0';
1075
1076                         if (dot)
1077                                 {
1078                                 BIO_puts(io,text);
1079                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1080                                 break;
1081                                 }
1082
1083                         if (*p == '/')
1084                                 {
1085                                 BIO_puts(io,text);
1086                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1087                                 break;
1088                                 }
1089
1090                         /* append if a directory lookup */
1091                         if (e[-1] == '/')
1092                                 strcat(p,"index.html");
1093
1094                         /* if a directory, do the index thang */
1095                         if (stat(p,&st_buf) < 0)
1096                                 {
1097                                 BIO_puts(io,text);
1098                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1099                                 ERR_print_errors(io);
1100                                 break;
1101                                 }
1102                         if (S_ISDIR(st_buf.st_mode))
1103                                 {
1104                                 strcat(p,"/index.html");
1105                                 }
1106
1107                         if ((file=BIO_new_file(p,"r")) == NULL)
1108                                 {
1109                                 BIO_puts(io,text);
1110                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1111                                 ERR_print_errors(io);
1112                                 break;
1113                                 }
1114
1115                         if (!s_quiet)
1116                                 BIO_printf(bio_err,"FILE:%s\n",p);
1117
1118                         i=strlen(p);
1119                         if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1120                                 ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1121                                 ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1122                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1123                         else
1124                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1125                         /* send the file */
1126                         total_bytes=0;
1127                         for (;;)
1128                                 {
1129                                 i=BIO_read(file,buf,bufsize);
1130                                 if (i <= 0) break;
1131
1132 #ifdef RENEG
1133                                 total_bytes+=i;
1134                                 fprintf(stderr,"%d\n",i);
1135                                 if (total_bytes > 3*1024)
1136                                         {
1137                                         total_bytes=0;
1138                                         fprintf(stderr,"RENEGOTIATE\n");
1139                                         SSL_renegotiate(con);
1140                                         }
1141 #endif
1142
1143                                 for (j=0; j<i; )
1144                                         {
1145 #ifdef RENEG
1146 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1147 #endif
1148                                         k=BIO_write(io,&(buf[j]),i-j);
1149                                         if (k <= 0)
1150                                                 {
1151                                                 if (!BIO_should_retry(io))
1152                                                         goto write_error;
1153                                                 else
1154                                                         {
1155                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1156                                                         }
1157                                                 }
1158                                         else
1159                                                 {
1160                                                 j+=k;
1161                                                 }
1162                                         }
1163                                 }
1164 write_error:
1165                         BIO_free(file);
1166                         break;
1167                         }
1168                 }
1169
1170         for (;;)
1171                 {
1172                 i=(int)BIO_flush(io);
1173                 if (i <= 0)
1174                         {
1175                         if (!BIO_should_retry(io))
1176                                 break;
1177                         }
1178                 else
1179                         break;
1180                 }
1181 end:
1182 #if 1
1183         /* make sure we re-use sessions */
1184         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1185 #else
1186         /* This kills performace */
1187 /*      SSL_shutdown(con); A shutdown gets sent in the
1188  *      BIO_free_all(io) procession */
1189 #endif
1190
1191 err:
1192
1193         if (ret >= 0)
1194                 BIO_printf(bio_s_out,"ACCEPT\n");
1195
1196         if (buf != NULL) Free(buf);
1197         if (io != NULL) BIO_free_all(io);
1198 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1199         return(ret);
1200         }
1201
1202 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export, int keylength)
1203         {
1204         static RSA *rsa_tmp=NULL;
1205
1206         if (rsa_tmp == NULL)
1207                 {
1208                 if (!s_quiet)
1209                         {
1210                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1211                         BIO_flush(bio_err);
1212                         }
1213 #ifndef NO_RSA
1214                 rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
1215 #endif
1216                 if (!s_quiet)
1217                         {
1218                         BIO_printf(bio_err,"\n");
1219                         BIO_flush(bio_err);
1220                         }
1221                 }
1222         return(rsa_tmp);
1223         }