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