ssl/ssltest.c

   1 /* ssl/ssltest.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 <errno.h>
  63 #include <openssl/e_os.h>
  64 #include <openssl/bio.h>
  65 #include <openssl/crypto.h>
  66 #include <openssl/x509.h>
  67 #include <openssl/ssl.h>
  68 #include <openssl/err.h>
  69 #ifdef WINDOWS
  70 #include "../crypto/bio/bss_file.c"
  71 #endif
  72
  73 #if defined(NO_RSA) && !defined(NO_SSL2)
  74 #define NO_SSL2
  75 #endif
  76
  77 #define TEST_SERVER_CERT "../apps/server.pem"
  78 #define TEST_CLIENT_CERT "../apps/client.pem"
  79
  80 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx);
  81 #ifndef NO_RSA
  82 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export,int keylength);
  83 #endif
  84 #ifndef NO_DH
  85 static DH *get_dh512(void);
  86 #endif
  87 BIO *bio_err=NULL;
  88 BIO *bio_stdout=NULL;
  89
  90 static char *cipher=NULL;
  91 int verbose=0;
  92 int debug=0;
  93 #ifdef FIONBIO
  94 static int s_nbio=0;
  95 #endif
  96
  97
  98 int doit(SSL *s_ssl,SSL *c_ssl,long bytes);
  99 static void sv_usage(void)
 100         {
 101         fprintf(stderr,"usage: ssltest [args ...]\n");
 102         fprintf(stderr,"\n");
 103         fprintf(stderr," -server_auth  - check server certificate\n");
 104         fprintf(stderr," -client_auth  - do client authentication\n");
 105         fprintf(stderr," -v            - more output\n");
 106         fprintf(stderr," -d            - debug output\n");
 107         fprintf(stderr," -reuse        - use session-id reuse\n");
 108         fprintf(stderr," -num <val>    - number of connections to perform\n");
 109         fprintf(stderr," -bytes <val>  - number of bytes to swap between client/server\n");
 110 #ifndef NO_SSL2
 111         fprintf(stderr," -ssl2         - use SSLv2\n");
 112 #endif
 113 #ifndef NO_SSL3
 114         fprintf(stderr," -ssl3         - use SSLv3\n");
 115 #endif
 116 #ifndef NO_TLS1
 117         fprintf(stderr," -tls1         - use TLSv1\n");
 118 #endif
 119         fprintf(stderr," -CApath arg   - PEM format directory of CA's\n");
 120         fprintf(stderr," -CAfile arg   - PEM format file of CA's\n");
 121         fprintf(stderr," -cert arg     - Certificate file\n");
 122         fprintf(stderr," -s_cert arg   - Just the server certificate file\n");
 123         fprintf(stderr," -c_cert arg   - Just the client certificate file\n");
 124         fprintf(stderr," -cipher arg   - The cipher list\n");
 125         }
 126
 127 int main(int argc, char *argv[])
 128         {
 129         char *CApath=NULL,*CAfile=NULL;
 130         int badop=0;
 131         int tls1=0,ssl2=0,ssl3=0,ret=1;
 132         int client_auth=0;
 133         int server_auth=0,i;
 134         char *server_cert=TEST_SERVER_CERT;
 135         char *client_cert=TEST_CLIENT_CERT;
 136         SSL_CTX *s_ctx=NULL;
 137         SSL_CTX *c_ctx=NULL;
 138         SSL_METHOD *meth=NULL;
 139         SSL *c_ssl,*s_ssl;
 140         int number=1,reuse=0;
 141         long bytes=1L;
 142         SSL_CIPHER *ciph;
 143 #ifndef NO_DH
 144         DH *dh;
 145 #endif
 146
 147         bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 148         bio_stdout=BIO_new_fp(stdout,BIO_NOCLOSE);
 149
 150         CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
 151
 152         argc--;
 153         argv++;
 154
 155         while (argc >= 1)
 156                 {
 157                 if      (strcmp(*argv,"-server_auth") == 0)
 158                         server_auth=1;
 159                 else if (strcmp(*argv,"-client_auth") == 0)
 160                         client_auth=1;
 161                 else if (strcmp(*argv,"-v") == 0)
 162                         verbose=1;
 163                 else if (strcmp(*argv,"-d") == 0)
 164                         debug=1;
 165                 else if (strcmp(*argv,"-reuse") == 0)
 166                         reuse=1;
 167                 else if (strcmp(*argv,"-ssl2") == 0)
 168                         ssl2=1;
 169                 else if (strcmp(*argv,"-tls1") == 0)
 170                         tls1=1;
 171                 else if (strcmp(*argv,"-ssl3") == 0)
 172                         ssl3=1;
 173                 else if (strncmp(*argv,"-num",4) == 0)
 174                         {
 175                         if (--argc < 1) goto bad;
 176                         number= atoi(*(++argv));
 177                         if (number == 0) number=1;
 178                         }
 179                 else if (strcmp(*argv,"-bytes") == 0)
 180                         {
 181                         if (--argc < 1) goto bad;
 182                         bytes= atol(*(++argv));
 183                         if (bytes == 0L) bytes=1L;
 184                         i=strlen(argv[0]);
 185                         if (argv[0][i-1] == 'k') bytes*=1024L;
 186                         if (argv[0][i-1] == 'm') bytes*=1024L*1024L;
 187                         }
 188                 else if (strcmp(*argv,"-cert") == 0)
 189                         {
 190                         if (--argc < 1) goto bad;
 191                         server_cert= *(++argv);
 192                         }
 193                 else if (strcmp(*argv,"-s_cert") == 0)
 194                         {
 195                         if (--argc < 1) goto bad;
 196                         server_cert= *(++argv);
 197                         }
 198                 else if (strcmp(*argv,"-c_cert") == 0)
 199                         {
 200                         if (--argc < 1) goto bad;
 201                         client_cert= *(++argv);
 202                         }
 203                 else if (strcmp(*argv,"-cipher") == 0)
 204                         {
 205                         if (--argc < 1) goto bad;
 206                         cipher= *(++argv);
 207                         }
 208                 else if (strcmp(*argv,"-CApath") == 0)
 209                         {
 210                         if (--argc < 1) goto bad;
 211                         CApath= *(++argv);
 212                         }
 213                 else if (strcmp(*argv,"-CAfile") == 0)
 214                         {
 215                         if (--argc < 1) goto bad;
 216                         CAfile= *(++argv);
 217                         }
 218                 else
 219                         {
 220                         fprintf(stderr,"unknown option %s\n",*argv);
 221                         badop=1;
 222                         break;
 223                         }
 224                 argc--;
 225                 argv++;
 226                 }
 227         if (badop)
 228                 {
 229 bad:
 230                 sv_usage();
 231                 goto end;
 232                 }
 233
 234 /*      if (cipher == NULL) cipher=getenv("SSL_CIPHER"); */
 235
 236         SSL_library_init();
 237         SSL_load_error_strings();
 238
 239 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 240         if (ssl2)
 241                 meth=SSLv2_method();
 242         else
 243         if (tls1)
 244                 meth=TLSv1_method();
 245         else
 246         if (ssl3)
 247                 meth=SSLv3_method();
 248         else
 249                 meth=SSLv23_method();
 250 #else
 251 #ifdef NO_SSL2
 252         meth=SSLv3_method();
 253 #else
 254         meth=SSLv2_method();
 255 #endif
 256 #endif
 257
 258         c_ctx=SSL_CTX_new(meth);
 259         s_ctx=SSL_CTX_new(meth);
 260         if ((c_ctx == NULL) || (s_ctx == NULL))
 261                 {
 262                 ERR_print_errors(bio_err);
 263                 goto end;
 264                 }
 265
 266         if (cipher != NULL)
 267                 {
 268                 SSL_CTX_set_cipher_list(c_ctx,cipher);
 269                 SSL_CTX_set_cipher_list(s_ctx,cipher);
 270                 }
 271
 272 #ifndef NO_DH
 273         dh=get_dh512();
 274         SSL_CTX_set_tmp_dh(s_ctx,dh);
 275         DH_free(dh);
 276 #endif
 277
 278 #ifndef NO_RSA
 279         SSL_CTX_set_tmp_rsa_callback(s_ctx,tmp_rsa_cb);
 280 #endif
 281
 282         if (!SSL_CTX_use_certificate_file(s_ctx,server_cert,SSL_FILETYPE_PEM))
 283                 {
 284                 ERR_print_errors(bio_err);
 285                 }
 286         else if (!SSL_CTX_use_PrivateKey_file(s_ctx,server_cert,
 287                 SSL_FILETYPE_PEM))
 288                 {
 289                 ERR_print_errors(bio_err);
 290                 goto end;
 291                 }
 292
 293         if (client_auth)
 294                 {
 295                 SSL_CTX_use_certificate_file(c_ctx,client_cert,
 296                         SSL_FILETYPE_PEM);
 297                 SSL_CTX_use_PrivateKey_file(c_ctx,client_cert,
 298                         SSL_FILETYPE_PEM);
 299                 }
 300
 301         if (    (!SSL_CTX_load_verify_locations(s_ctx,CAfile,CApath)) ||
 302                 (!SSL_CTX_set_default_verify_paths(s_ctx)) ||
 303                 (!SSL_CTX_load_verify_locations(c_ctx,CAfile,CApath)) ||
 304                 (!SSL_CTX_set_default_verify_paths(c_ctx)))
 305                 {
 306                 /* fprintf(stderr,"SSL_load_verify_locations\n"); */
 307                 ERR_print_errors(bio_err);
 308                 /* goto end; */
 309                 }
 310
 311         if (client_auth)
 312                 {
 313                 fprintf(stderr,"client authentication\n");
 314                 SSL_CTX_set_verify(s_ctx,
 315                         SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
 316                         verify_callback);
 317                 }
 318         if (server_auth)
 319                 {
 320                 fprintf(stderr,"server authentication\n");
 321                 SSL_CTX_set_verify(c_ctx,SSL_VERIFY_PEER,
 322                         verify_callback);
 323                 }
 324
 325         c_ssl=SSL_new(c_ctx);
 326         s_ssl=SSL_new(s_ctx);
 327
 328         for (i=0; i<number; i++)
 329                 {
 330                 if (!reuse) SSL_set_session(c_ssl,NULL);
 331                 ret=doit(s_ssl,c_ssl,bytes);
 332                 }
 333
 334         if (!verbose)
 335                 {
 336                 ciph=SSL_get_current_cipher(c_ssl);
 337                 fprintf(stdout,"Protocol %s, cipher %s, %s\n",
 338                         SSL_get_version(c_ssl),
 339                         SSL_CIPHER_get_version(ciph),
 340                         SSL_CIPHER_get_name(ciph));
 341                 }
 342         if ((number > 1) || (bytes > 1L))
 343                 printf("%d handshakes of %ld bytes done\n",number,bytes);
 344
 345         SSL_free(s_ssl);
 346         SSL_free(c_ssl);
 347
 348 end:
 349         if (s_ctx != NULL) SSL_CTX_free(s_ctx);
 350         if (c_ctx != NULL) SSL_CTX_free(c_ctx);
 351
 352         if (bio_stdout != NULL) BIO_free(bio_stdout);
 353
 354         ERR_free_strings();
 355         ERR_remove_state(0);
 356         EVP_cleanup();
 357         CRYPTO_mem_leaks(bio_err);
 358         EXIT(ret);
 359         }
 360
 361 #define W_READ  1
 362 #define W_WRITE 2
 363 #define C_DONE  1
 364 #define S_DONE  2
 365
 366 int doit(SSL *s_ssl, SSL *c_ssl, long count)
 367         {
 368         MS_STATIC char cbuf[1024*8],sbuf[1024*8];
 369         long cw_num=count,cr_num=count;
 370         long sw_num=count,sr_num=count;
 371         int ret=1;
 372         BIO *c_to_s=NULL;
 373         BIO *s_to_c=NULL;
 374         BIO *c_bio=NULL;
 375         BIO *s_bio=NULL;
 376         int c_r,c_w,s_r,s_w;
 377         int c_want,s_want;
 378         int i,j;
 379         int done=0;
 380         int c_write,s_write;
 381         int do_server=0,do_client=0;
 382         SSL_CIPHER *ciph;
 383
 384         c_to_s=BIO_new(BIO_s_mem());
 385         s_to_c=BIO_new(BIO_s_mem());
 386         if ((s_to_c == NULL) || (c_to_s == NULL))
 387                 {
 388                 ERR_print_errors(bio_err);
 389                 goto err;
 390                 }
 391
 392         c_bio=BIO_new(BIO_f_ssl());
 393         s_bio=BIO_new(BIO_f_ssl());
 394         if ((c_bio == NULL) || (s_bio == NULL))
 395                 {
 396                 ERR_print_errors(bio_err);
 397                 goto err;
 398                 }
 399
 400         SSL_set_connect_state(c_ssl);
 401         SSL_set_bio(c_ssl,s_to_c,c_to_s);
 402         BIO_set_ssl(c_bio,c_ssl,BIO_NOCLOSE);
 403
 404         SSL_set_accept_state(s_ssl);
 405         SSL_set_bio(s_ssl,c_to_s,s_to_c);
 406         BIO_set_ssl(s_bio,s_ssl,BIO_NOCLOSE);
 407
 408         c_r=0; s_r=1;
 409         c_w=1; s_w=0;
 410         c_want=W_WRITE;
 411         s_want=0;
 412         c_write=1,s_write=0;
 413
 414         /* We can always do writes */
 415         for (;;)
 416                 {
 417                 do_server=0;
 418                 do_client=0;
 419
 420                 i=(int)BIO_pending(s_bio);
 421                 if ((i && s_r) || s_w) do_server=1;
 422
 423                 i=(int)BIO_pending(c_bio);
 424                 if ((i && c_r) || c_w) do_client=1;
 425
 426                 if (do_server && debug)
 427                         {
 428                         if (SSL_in_init(s_ssl))
 429                                 printf("server waiting in SSL_accept - %s\n",
 430                                         SSL_state_string_long(s_ssl));
 431 /*                      else if (s_write)
 432                                 printf("server:SSL_write()\n");
 433                         else
 434                                 printf("server:SSL_read()\n"); */
 435                         }
 436
 437                 if (do_client && debug)
 438                         {
 439                         if (SSL_in_init(c_ssl))
 440                                 printf("client waiting in SSL_connect - %s\n",
 441                                         SSL_state_string_long(c_ssl));
 442 /*                      else if (c_write)
 443                                 printf("client:SSL_write()\n");
 444                         else
 445                                 printf("client:SSL_read()\n"); */
 446                         }
 447
 448                 if (!do_client && !do_server)
 449                         {
 450                         fprintf(stdout,"ERROR IN STARTUP\n");
 451                         ERR_print_errors(bio_err);
 452                         break;
 453                         }
 454                 if (do_client && !(done & C_DONE))
 455                         {
 456                         if (c_write)
 457                                 {
 458                                 j=(cw_num > (long)sizeof(cbuf))
 459                                         ?sizeof(cbuf):(int)cw_num;
 460                                 i=BIO_write(c_bio,cbuf,j);
 461                                 if (i < 0)
 462                                         {
 463                                         c_r=0;
 464                                         c_w=0;
 465                                         if (BIO_should_retry(c_bio))
 466                                                 {
 467                                                 if (BIO_should_read(c_bio))
 468                                                         c_r=1;
 469                                                 if (BIO_should_write(c_bio))
 470                                                         c_w=1;
 471                                                 }
 472                                         else
 473                                                 {
 474                                                 fprintf(stderr,"ERROR in CLIENT\n");
 475                                                 ERR_print_errors(bio_err);
 476                                                 goto err;
 477                                                 }
 478                                         }
 479                                 else if (i == 0)
 480                                         {
 481                                         fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
 482                                         goto err;
 483                                         }
 484                                 else
 485                                         {
 486                                         if (debug)
 487                                                 printf("client wrote %d\n",i);
 488                                         /* ok */
 489                                         s_r=1;
 490                                         c_write=0;
 491                                         cw_num-=i;
 492                                         }
 493                                 }
 494                         else
 495                                 {
 496                                 i=BIO_read(c_bio,cbuf,sizeof(cbuf));
 497                                 if (i < 0)
 498                                         {
 499                                         c_r=0;
 500                                         c_w=0;
 501                                         if (BIO_should_retry(c_bio))
 502                                                 {
 503                                                 if (BIO_should_read(c_bio))
 504                                                         c_r=1;
 505                                                 if (BIO_should_write(c_bio))
 506                                                         c_w=1;
 507                                                 }
 508                                         else
 509                                                 {
 510                                                 fprintf(stderr,"ERROR in CLIENT\n");
 511                                                 ERR_print_errors(bio_err);
 512                                                 goto err;
 513                                                 }
 514                                         }
 515                                 else if (i == 0)
 516                                         {
 517                                         fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
 518                                         goto err;
 519                                         }
 520                                 else
 521                                         {
 522                                         if (debug)
 523                                                 printf("client read %d\n",i);
 524                                         cr_num-=i;
 525                                         if (sw_num > 0)
 526                                                 {
 527                                                 s_write=1;
 528                                                 s_w=1;
 529                                                 }
 530                                         if (cr_num <= 0)
 531                                                 {
 532                                                 s_write=1;
 533                                                 s_w=1;
 534                                                 done=S_DONE|C_DONE;
 535                                                 }
 536                                         }
 537                                 }
 538                         }
 539
 540                 if (do_server && !(done & S_DONE))
 541                         {
 542                         if (!s_write)
 543                                 {
 544                                 i=BIO_read(s_bio,sbuf,sizeof(cbuf));
 545                                 if (i < 0)
 546                                         {
 547                                         s_r=0;
 548                                         s_w=0;
 549                                         if (BIO_should_retry(s_bio))
 550                                                 {
 551                                                 if (BIO_should_read(s_bio))
 552                                                         s_r=1;
 553                                                 if (BIO_should_write(s_bio))
 554                                                         s_w=1;
 555                                                 }
 556                                         else
 557                                                 {
 558                                                 fprintf(stderr,"ERROR in SERVER\n");
 559                                                 ERR_print_errors(bio_err);
 560                                                 goto err;
 561                                                 }
 562                                         }
 563                                 else if (i == 0)
 564                                         {
 565                                         ERR_print_errors(bio_err);
 566                                         fprintf(stderr,"SSL SERVER STARTUP FAILED in SSL_read\n");
 567                                         goto err;
 568                                         }
 569                                 else
 570                                         {
 571                                         if (debug)
 572                                                 printf("server read %d\n",i);
 573                                         sr_num-=i;
 574                                         if (cw_num > 0)
 575                                                 {
 576                                                 c_write=1;
 577                                                 c_w=1;
 578                                                 }
 579                                         if (sr_num <= 0)
 580                                                 {
 581                                                 s_write=1;
 582                                                 s_w=1;
 583                                                 c_write=0;
 584                                                 }
 585                                         }
 586                                 }
 587                         else
 588                                 {
 589                                 j=(sw_num > (long)sizeof(sbuf))?
 590                                         sizeof(sbuf):(int)sw_num;
 591                                 i=BIO_write(s_bio,sbuf,j);
 592                                 if (i < 0)
 593                                         {
 594                                         s_r=0;
 595                                         s_w=0;
 596                                         if (BIO_should_retry(s_bio))
 597                                                 {
 598                                                 if (BIO_should_read(s_bio))
 599                                                         s_r=1;
 600                                                 if (BIO_should_write(s_bio))
 601                                                         s_w=1;
 602                                                 }
 603                                         else
 604                                                 {
 605                                                 fprintf(stderr,"ERROR in SERVER\n");
 606                                                 ERR_print_errors(bio_err);
 607                                                 goto err;
 608                                                 }
 609                                         }
 610                                 else if (i == 0)
 611                                         {
 612                                         ERR_print_errors(bio_err);
 613                                         fprintf(stderr,"SSL SERVER STARTUP FAILED in SSL_write\n");
 614                                         goto err;
 615                                         }
 616                                 else
 617                                         {
 618                                         if (debug)
 619                                                 printf("server wrote %d\n",i);
 620                                         sw_num-=i;
 621                                         s_write=0;
 622                                         c_r=1;
 623                                         if (sw_num <= 0)
 624                                                 done|=S_DONE;
 625                                         }
 626                                 }
 627                         }
 628
 629                 if ((done & S_DONE) && (done & C_DONE)) break;
 630                 }
 631
 632         ciph=SSL_get_current_cipher(c_ssl);
 633         if (verbose)
 634                 fprintf(stdout,"DONE, protocol %s, cipher %s, %s\n",
 635                         SSL_get_version(c_ssl),
 636                         SSL_CIPHER_get_version(ciph),
 637                         SSL_CIPHER_get_name(ciph));
 638         ret=0;
 639 err:
 640         /* We have to set the BIO's to NULL otherwise they will be
 641          * Free()ed twice.  Once when th s_ssl is SSL_free()ed and
 642          * again when c_ssl is SSL_free()ed.
 643          * This is a hack required because s_ssl and c_ssl are sharing the same
 644          * BIO structure and SSL_set_bio() and SSL_free() automatically
 645          * BIO_free non NULL entries.
 646          * You should not normally do this or be required to do this */
 647         if (s_ssl != NULL)
 648                 {
 649                 s_ssl->rbio=NULL;
 650                 s_ssl->wbio=NULL;
 651                 }
 652         if (c_ssl != NULL)
 653                 {
 654                 c_ssl->rbio=NULL;
 655                 c_ssl->wbio=NULL;
 656                 }
 657
 658         if (c_to_s != NULL) BIO_free(c_to_s);
 659         if (s_to_c != NULL) BIO_free(s_to_c);
 660         if (c_bio != NULL) BIO_free_all(c_bio);
 661         if (s_bio != NULL) BIO_free_all(s_bio);
 662         return(ret);
 663         }
 664
 665 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
 666         {
 667         char *s,buf[256];
 668
 669         s=X509_NAME_oneline(X509_get_subject_name(ctx->current_cert),buf,256);
 670         if (s != NULL)
 671                 {
 672                 if (ok)
 673                         fprintf(stderr,"depth=%d %s\n",ctx->error_depth,buf);
 674                 else
 675                         fprintf(stderr,"depth=%d error=%d %s\n",
 676                                 ctx->error_depth,ctx->error,buf);
 677                 }
 678
 679         if (ok == 0)
 680                 {
 681                 switch (ctx->error)
 682                         {
 683                 case X509_V_ERR_CERT_NOT_YET_VALID:
 684                 case X509_V_ERR_CERT_HAS_EXPIRED:
 685                 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
 686                         ok=1;
 687                         }
 688                 }
 689
 690         return(ok);
 691         }
 692
 693 #ifndef NO_DH
 694 static unsigned char dh512_p[]={
 695         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
 696         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
 697         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
 698         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
 699         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
 700         0x47,0x74,0xE8,0x33,
 701         };
 702 static unsigned char dh512_g[]={
 703         0x02,
 704         };
 705
 706 static DH *get_dh512(void)
 707         {
 708         DH *dh=NULL;
 709
 710         if ((dh=DH_new()) == NULL) return(NULL);
 711         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
 712         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
 713         if ((dh->p == NULL) || (dh->g == NULL))
 714                 return(NULL);
 715         return(dh);
 716         }
 717 #endif
 718
 719 #ifndef NO_RSA
 720 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export, int keylength)
 721         {
 722         static RSA *rsa_tmp=NULL;
 723
 724         if (rsa_tmp == NULL)
 725                 {
 726                 BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
 727                 BIO_flush(bio_err);
 728                 rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
 729                 BIO_printf(bio_err,"\n");
 730                 BIO_flush(bio_err);
 731                 }
 732         return(rsa_tmp);
 733         }
 734 #endif