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 <assert.h>
  60 #include <errno.h>
  61 #include <limits.h>
  62 #include <stdio.h>
  63 #include <stdlib.h>
  64 #include <string.h>
  65
  66 #include "openssl/e_os.h"
  67
  68 #include <openssl/bio.h>
  69 #include <openssl/crypto.h>
  70 #include <openssl/x509.h>
  71 #include <openssl/ssl.h>
  72 #include <openssl/err.h>
  73 #include <openssl/rand.h>
  74 #ifdef WINDOWS
  75 #include "../crypto/bio/bss_file.c"
  76 #endif
  77
  78 #ifdef VMS
  79 #  define TEST_SERVER_CERT "SYS$DISK:[-.APPS]SERVER.PEM"
  80 #  define TEST_CLIENT_CERT "SYS$DISK:[-.APPS]CLIENT.PEM"
  81 #else
  82 #  define TEST_SERVER_CERT "../apps/server.pem"
  83 #  define TEST_CLIENT_CERT "../apps/client.pem"
  84 #endif
  85
  86 static int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx);
  87 #ifndef NO_RSA
  88 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export,int keylength);
  89 #endif
  90 #ifndef NO_DH
  91 static DH *get_dh512(void);
  92 #endif
  93 #ifndef NO_DSA
  94 static void MS_CALLBACK dsa_cb(int p, int n, void *arg);
  95 #endif
  96
  97 static BIO *bio_err=NULL;
  98 static BIO *bio_stdout=NULL;
  99
 100 static char *cipher=NULL;
 101 static int verbose=0;
 102 static int debug=0;
 103 #if 0
 104 /* Not used yet. */
 105 #ifdef FIONBIO
 106 static int s_nbio=0;
 107 #endif
 108 #endif
 109
 110 static const char rnd_seed[] = "string to make the random number generator think it has entropy";
 111
 112 int doit_biopair(SSL *s_ssl,SSL *c_ssl,long bytes);
 113 int doit(SSL *s_ssl,SSL *c_ssl,long bytes);
 114 static void sv_usage(void)
 115         {
 116         fprintf(stderr,"usage: ssltest [args ...]\n");
 117         fprintf(stderr,"\n");
 118         fprintf(stderr," -server_auth  - check server certificate\n");
 119         fprintf(stderr," -client_auth  - do client authentication\n");
 120         fprintf(stderr," -v            - more output\n");
 121         fprintf(stderr," -d            - debug output\n");
 122         fprintf(stderr," -reuse        - use session-id reuse\n");
 123         fprintf(stderr," -num <val>    - number of connections to perform\n");
 124         fprintf(stderr," -bytes <val>  - number of bytes to swap between client/server\n");
 125 #if !defined NO_DH && !defined NO_DSA
 126         fprintf(stderr," -dhe1024      - generate 1024 bit key for DHE\n");
 127 #endif
 128 #if !defined NO_DH
 129         fprintf(stderr," -no_dhe       - disable DHE\n");
 130 #endif
 131 #ifndef NO_SSL2
 132         fprintf(stderr," -ssl2         - use SSLv2\n");
 133 #endif
 134 #ifndef NO_SSL3
 135         fprintf(stderr," -ssl3         - use SSLv3\n");
 136 #endif
 137 #ifndef NO_TLS1
 138         fprintf(stderr," -tls1         - use TLSv1\n");
 139 #endif
 140         fprintf(stderr," -CApath arg   - PEM format directory of CA's\n");
 141         fprintf(stderr," -CAfile arg   - PEM format file of CA's\n");
 142         fprintf(stderr," -cert arg     - Certificate file\n");
 143         fprintf(stderr," -s_cert arg   - Just the server certificate file\n");
 144         fprintf(stderr," -c_cert arg   - Just the client certificate file\n");
 145         fprintf(stderr," -cipher arg   - The cipher list\n");
 146         fprintf(stderr," -bio_pair     - Use BIO pairs\n");
 147         fprintf(stderr," -f            - Test even cases that can't work\n");
 148         }
 149
 150 int main(int argc, char *argv[])
 151         {
 152         char *CApath=NULL,*CAfile=NULL;
 153         int badop=0;
 154         int bio_pair=0;
 155         int force=0;
 156         int tls1=0,ssl2=0,ssl3=0,ret=1;
 157         int client_auth=0;
 158         int server_auth=0,i;
 159         char *server_cert=TEST_SERVER_CERT;
 160         char *client_cert=TEST_CLIENT_CERT;
 161         SSL_CTX *s_ctx=NULL;
 162         SSL_CTX *c_ctx=NULL;
 163         SSL_METHOD *meth=NULL;
 164         SSL *c_ssl,*s_ssl;
 165         int number=1,reuse=0;
 166         long bytes=1L;
 167         SSL_CIPHER *ciph;
 168         int dhe1024 = 0, no_dhe = 0;
 169 #ifndef NO_DH
 170         DH *dh;
 171 #endif
 172         verbose = 0;
 173         debug = 0;
 174         cipher = 0;
 175
 176         CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
 177
 178         RAND_seed(rnd_seed, sizeof rnd_seed);
 179
 180         bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 181         bio_stdout=BIO_new_fp(stdout,BIO_NOCLOSE);
 182
 183         argc--;
 184         argv++;
 185
 186         while (argc >= 1)
 187                 {
 188                 if      (strcmp(*argv,"-server_auth") == 0)
 189                         server_auth=1;
 190                 else if (strcmp(*argv,"-client_auth") == 0)
 191                         client_auth=1;
 192                 else if (strcmp(*argv,"-v") == 0)
 193                         verbose=1;
 194                 else if (strcmp(*argv,"-d") == 0)
 195                         debug=1;
 196                 else if (strcmp(*argv,"-reuse") == 0)
 197                         reuse=1;
 198                 else if (strcmp(*argv,"-dhe1024") == 0)
 199                         dhe1024=1;
 200                 else if (strcmp(*argv,"-no_dhe") == 0)
 201                         no_dhe=1;
 202                 else if (strcmp(*argv,"-ssl2") == 0)
 203                         ssl2=1;
 204                 else if (strcmp(*argv,"-tls1") == 0)
 205                         tls1=1;
 206                 else if (strcmp(*argv,"-ssl3") == 0)
 207                         ssl3=1;
 208                 else if (strncmp(*argv,"-num",4) == 0)
 209                         {
 210                         if (--argc < 1) goto bad;
 211                         number= atoi(*(++argv));
 212                         if (number == 0) number=1;
 213                         }
 214                 else if (strcmp(*argv,"-bytes") == 0)
 215                         {
 216                         if (--argc < 1) goto bad;
 217                         bytes= atol(*(++argv));
 218                         if (bytes == 0L) bytes=1L;
 219                         i=strlen(argv[0]);
 220                         if (argv[0][i-1] == 'k') bytes*=1024L;
 221                         if (argv[0][i-1] == 'm') bytes*=1024L*1024L;
 222                         }
 223                 else if (strcmp(*argv,"-cert") == 0)
 224                         {
 225                         if (--argc < 1) goto bad;
 226                         server_cert= *(++argv);
 227                         }
 228                 else if (strcmp(*argv,"-s_cert") == 0)
 229                         {
 230                         if (--argc < 1) goto bad;
 231                         server_cert= *(++argv);
 232                         }
 233                 else if (strcmp(*argv,"-c_cert") == 0)
 234                         {
 235                         if (--argc < 1) goto bad;
 236                         client_cert= *(++argv);
 237                         }
 238                 else if (strcmp(*argv,"-cipher") == 0)
 239                         {
 240                         if (--argc < 1) goto bad;
 241                         cipher= *(++argv);
 242                         }
 243                 else if (strcmp(*argv,"-CApath") == 0)
 244                         {
 245                         if (--argc < 1) goto bad;
 246                         CApath= *(++argv);
 247                         }
 248                 else if (strcmp(*argv,"-CAfile") == 0)
 249                         {
 250                         if (--argc < 1) goto bad;
 251                         CAfile= *(++argv);
 252                         }
 253                 else if (strcmp(*argv,"-bio_pair") == 0)
 254                         {
 255                         bio_pair = 1;
 256                         }
 257                 else if (strcmp(*argv,"-f") == 0)
 258                         {
 259                         force = 1;
 260                         }
 261                 else
 262                         {
 263                         fprintf(stderr,"unknown option %s\n",*argv);
 264                         badop=1;
 265                         break;
 266                         }
 267                 argc--;
 268                 argv++;
 269                 }
 270         if (badop)
 271                 {
 272 bad:
 273                 sv_usage();
 274                 goto end;
 275                 }
 276
 277         if (!ssl2 && !ssl3 && !tls1 && number > 1 && !reuse && !force)
 278                 {
 279                 fprintf(stderr, "This case cannot work.  Use -f switch to perform "
 280                         "the test anyway\n"
 281                         "(and -d to see what happens, "
 282                         "and -bio_pair to really make it happen :-)\n"
 283                         "or add one of -ssl2, -ssl3, -tls1, -reuse to "
 284                         "avoid protocol mismatch.\n");
 285                 exit(1);
 286                 }
 287
 288 /*      if (cipher == NULL) cipher=getenv("SSL_CIPHER"); */
 289
 290         SSL_library_init();
 291         SSL_load_error_strings();
 292
 293 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 294         if (ssl2)
 295                 meth=SSLv2_method();
 296         else
 297         if (tls1)
 298                 meth=TLSv1_method();
 299         else
 300         if (ssl3)
 301                 meth=SSLv3_method();
 302         else
 303                 meth=SSLv23_method();
 304 #else
 305 #ifdef NO_SSL2
 306         meth=SSLv3_method();
 307 #else
 308         meth=SSLv2_method();
 309 #endif
 310 #endif
 311
 312         c_ctx=SSL_CTX_new(meth);
 313         s_ctx=SSL_CTX_new(meth);
 314         if ((c_ctx == NULL) || (s_ctx == NULL))
 315                 {
 316                 ERR_print_errors(bio_err);
 317                 goto end;
 318                 }
 319
 320         if (cipher != NULL)
 321                 {
 322                 SSL_CTX_set_cipher_list(c_ctx,cipher);
 323                 SSL_CTX_set_cipher_list(s_ctx,cipher);
 324                 }
 325
 326 #ifndef NO_DH
 327         if (!no_dhe)
 328                 {
 329 # ifndef NO_DSA
 330                 if (dhe1024)
 331                         {
 332                         DSA *dsa;
 333                         unsigned char seed[20];
 334
 335                         if (verbose)
 336                                 {
 337                                 BIO_printf(bio_err, "Creating 1024 bit DHE parameters\n");
 338                                 BIO_flush(bio_err);
 339                                 }
 340
 341                         memcpy(seed, "Random String no. 12", 20);
 342                         dsa = DSA_generate_parameters(1024, seed, 20, NULL, NULL, dsa_cb, bio_err);
 343                         dh = DSA_dup_DH(dsa);
 344                         DSA_free(dsa);
 345                         /* important: SSL_OP_SINGLE_DH_USE to avoid small subgroup attacks */
 346                         SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
 347
 348                         if (verbose)
 349                                 fprintf(stdout, " done\n");
 350                         }
 351                 else
 352 # endif
 353                         dh=get_dh512();
 354                 SSL_CTX_set_tmp_dh(s_ctx,dh);
 355                 DH_free(dh);
 356                 }
 357 #endif
 358
 359 #ifndef NO_RSA
 360         SSL_CTX_set_tmp_rsa_callback(s_ctx,tmp_rsa_cb);
 361 #endif
 362
 363         if (!SSL_CTX_use_certificate_file(s_ctx,server_cert,SSL_FILETYPE_PEM))
 364                 {
 365                 ERR_print_errors(bio_err);
 366                 }
 367         else if (!SSL_CTX_use_PrivateKey_file(s_ctx,server_cert,
 368                 SSL_FILETYPE_PEM))
 369                 {
 370                 ERR_print_errors(bio_err);
 371                 goto end;
 372                 }
 373
 374         if (client_auth)
 375                 {
 376                 SSL_CTX_use_certificate_file(c_ctx,client_cert,
 377                         SSL_FILETYPE_PEM);
 378                 SSL_CTX_use_PrivateKey_file(c_ctx,client_cert,
 379                         SSL_FILETYPE_PEM);
 380                 }
 381
 382         if (    (!SSL_CTX_load_verify_locations(s_ctx,CAfile,CApath)) ||
 383                 (!SSL_CTX_set_default_verify_paths(s_ctx)) ||
 384                 (!SSL_CTX_load_verify_locations(c_ctx,CAfile,CApath)) ||
 385                 (!SSL_CTX_set_default_verify_paths(c_ctx)))
 386                 {
 387                 /* fprintf(stderr,"SSL_load_verify_locations\n"); */
 388                 ERR_print_errors(bio_err);
 389                 /* goto end; */
 390                 }
 391
 392         if (client_auth)
 393                 {
 394                 BIO_printf(bio_err,"client authentication\n");
 395                 SSL_CTX_set_verify(s_ctx,
 396                         SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
 397                         verify_callback);
 398                 }
 399         if (server_auth)
 400                 {
 401                 BIO_printf(bio_err,"server authentication\n");
 402                 SSL_CTX_set_verify(c_ctx,SSL_VERIFY_PEER,
 403                         verify_callback);
 404                 }
 405
 406         {
 407                 int session_id_context = 0;
 408                 SSL_CTX_set_session_id_context(s_ctx, (void *)&session_id_context, sizeof session_id_context);
 409         }
 410
 411         c_ssl=SSL_new(c_ctx);
 412         s_ssl=SSL_new(s_ctx);
 413
 414         for (i=0; i<number; i++)
 415                 {
 416                 if (!reuse) SSL_set_session(c_ssl,NULL);
 417                 if (bio_pair)
 418                         ret=doit_biopair(s_ssl,c_ssl,bytes);
 419                 else
 420                         ret=doit(s_ssl,c_ssl,bytes);
 421                 }
 422
 423         if (!verbose)
 424                 {
 425                 ciph=SSL_get_current_cipher(c_ssl);
 426                 BIO_printf(bio_stdout,"Protocol %s, cipher %s, %s\n",
 427                         SSL_get_version(c_ssl),
 428                         SSL_CIPHER_get_version(ciph),
 429                         SSL_CIPHER_get_name(ciph));
 430                 }
 431         if ((number > 1) || (bytes > 1L))
 432                 BIO_printf(bio_stdout, "%d handshakes of %ld bytes done\n",number,bytes);
 433
 434         SSL_free(s_ssl);
 435         SSL_free(c_ssl);
 436
 437 end:
 438         if (s_ctx != NULL) SSL_CTX_free(s_ctx);
 439         if (c_ctx != NULL) SSL_CTX_free(c_ctx);
 440
 441         if (bio_stdout != NULL) BIO_free(bio_stdout);
 442
 443         ERR_free_strings();
 444         ERR_remove_state(0);
 445         EVP_cleanup();
 446         CRYPTO_mem_leaks(bio_err);
 447         if (bio_err != NULL) BIO_free(bio_err);
 448         EXIT(ret);
 449         }
 450
 451 int doit_biopair(SSL *s_ssl, SSL *c_ssl, long count)
 452         {
 453         long cw_num = count, cr_num = count, sw_num = count, sr_num = count;
 454         BIO *s_ssl_bio = NULL, *c_ssl_bio = NULL;
 455         BIO *server = NULL, *server_io = NULL, *client = NULL, *client_io = NULL;
 456         SSL_CIPHER *ciph;
 457         int ret = 1;
 458
 459         size_t bufsiz = 256; /* small buffer for testing */
 460
 461         if (!BIO_new_bio_pair(&server, bufsiz, &server_io, bufsiz))
 462                 goto err;
 463         if (!BIO_new_bio_pair(&client, bufsiz, &client_io, bufsiz))
 464                 goto err;
 465
 466         s_ssl_bio = BIO_new(BIO_f_ssl());
 467         if (!s_ssl_bio)
 468                 goto err;
 469
 470         c_ssl_bio = BIO_new(BIO_f_ssl());
 471         if (!c_ssl_bio)
 472                 goto err;
 473
 474         SSL_set_connect_state(c_ssl);
 475         SSL_set_bio(c_ssl, client, client);
 476         (void)BIO_set_ssl(c_ssl_bio, c_ssl, BIO_NOCLOSE);
 477
 478         SSL_set_accept_state(s_ssl);
 479         SSL_set_bio(s_ssl, server, server);
 480         (void)BIO_set_ssl(s_ssl_bio, s_ssl, BIO_NOCLOSE);
 481
 482         do
 483                 {
 484                 /* c_ssl_bio:          SSL filter BIO
 485                  *
 486                  * client:             pseudo-I/O for SSL library
 487                  *
 488                  * client_io:          client's SSL communication; usually to be
 489                  *                     relayed over some I/O facility, but in this
 490                  *                     test program, we're the server, too:
 491                  *
 492                  * server_io:          server's SSL communication
 493                  *
 494                  * server:             pseudo-I/O for SSL library
 495                  *
 496                  * s_ssl_bio:          SSL filter BIO
 497                  *
 498                  * The client and the server each employ a "BIO pair":
 499                  * client + client_io, server + server_io.
 500                  * BIO pairs are symmetric.  A BIO pair behaves similar
 501                  * to a non-blocking socketpair (but both endpoints must
 502                  * be handled by the same thread).
 503                  * [Here we could connect client and server to the ends
 504                  * of a single BIO pair, but then this code would be less
 505                  * suitable as an example for BIO pairs in general.]
 506                  *
 507                  * Useful functions for querying the state of BIO pair endpoints:
 508                  *
 509                  * BIO_ctrl_pending(bio)              number of bytes we can read now
 510                  * BIO_ctrl_get_read_request(bio)     number of bytes needed to fulfil
 511                  *                                      other side's read attempt
 512                  * BIO_ctrl_get_write_guarantee(bio)   number of bytes we can write now
 513                  *
 514                  * ..._read_request is never more than ..._write_guarantee;
 515                  * it depends on the application which one you should use.
 516                  */
 517
 518                 /* We have non-blocking behaviour throughout this test program, but
 519                  * can be sure that there is *some* progress in each iteration; so
 520                  * we don't have to worry about ..._SHOULD_READ or ..._SHOULD_WRITE
 521                  * -- we just try everything in each iteration
 522                  */
 523
 524                         {
 525                         /* CLIENT */
 526
 527                         MS_STATIC char cbuf[1024*8];
 528                         int i, r;
 529
 530                         if (debug)
 531                                 if (SSL_in_init(c_ssl))
 532                                         printf("client waiting in SSL_connect - %s\n",
 533                                                 SSL_state_string_long(c_ssl));
 534
 535                         if (cw_num > 0)
 536                                 {
 537                                 /* Write to server. */
 538
 539                                 if (cw_num > (long)sizeof cbuf)
 540                                         i = sizeof cbuf;
 541                                 else
 542                                         i = (int)cw_num;
 543                                 r = BIO_write(c_ssl_bio, cbuf, i);
 544                                 if (r < 0)
 545                                         {
 546                                         if (!BIO_should_retry(c_ssl_bio))
 547                                                 {
 548                                                 fprintf(stderr,"ERROR in CLIENT\n");
 549                                                 goto err;
 550                                                 }
 551                                         /* BIO_should_retry(...) can just be ignored here.
 552                                          * The library expects us to call BIO_write with
 553                                          * the same arguments again, and that's what we will
 554                                          * do in the next iteration. */
 555                                         }
 556                                 else if (r == 0)
 557                                         {
 558                                         fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
 559                                         goto err;
 560                                         }
 561                                 else
 562                                         {
 563                                         if (debug)
 564                                                 printf("client wrote %d\n", r);
 565                                         cw_num -= r;
 566                                         }
 567                                 }
 568
 569                         if (cr_num > 0)
 570                                 {
 571                                 /* Read from server. */
 572
 573                                 r = BIO_read(c_ssl_bio, cbuf, sizeof(cbuf));
 574                                 if (r < 0)
 575                                         {
 576                                         if (!BIO_should_retry(c_ssl_bio))
 577                                                 {
 578                                                 fprintf(stderr,"ERROR in CLIENT\n");
 579                                                 goto err;
 580                                                 }
 581                                         /* Again, "BIO_should_retry" can be ignored. */
 582                                         }
 583                                 else if (r == 0)
 584                                         {
 585                                         fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
 586                                         goto err;
 587                                         }
 588                                 else
 589                                         {
 590                                         if (debug)
 591                                                 printf("client read %d\n", r);
 592                                         cr_num -= r;
 593                                         }
 594                                 }
 595                         }
 596
 597                         {
 598                         /* SERVER */
 599
 600                         MS_STATIC char sbuf[1024*8];
 601                         int i, r;
 602
 603                         if (debug)
 604                                 if (SSL_in_init(s_ssl))
 605                                         printf("server waiting in SSL_accept - %s\n",
 606                                                 SSL_state_string_long(s_ssl));
 607
 608                         if (sw_num > 0)
 609                                 {
 610                                 /* Write to client. */
 611
 612                                 if (sw_num > (long)sizeof sbuf)
 613                                         i = sizeof sbuf;
 614                                 else
 615                                         i = (int)sw_num;
 616                                 r = BIO_write(s_ssl_bio, sbuf, i);
 617                                 if (r < 0)
 618                                         {
 619                                         if (!BIO_should_retry(s_ssl_bio))
 620                                                 {
 621                                                 fprintf(stderr,"ERROR in SERVER\n");
 622                                                 goto err;
 623                                                 }
 624                                         /* Ignore "BIO_should_retry". */
 625                                         }
 626                                 else if (r == 0)
 627                                         {
 628                                         fprintf(stderr,"SSL SERVER STARTUP FAILED\n");
 629                                         goto err;
 630                                         }
 631                                 else
 632                                         {
 633                                         if (debug)
 634                                                 printf("server wrote %d\n", r);
 635                                         sw_num -= r;
 636                                         }
 637                                 }
 638
 639                         if (sr_num > 0)
 640                                 {
 641                                 /* Read from client. */
 642
 643                                 r = BIO_read(s_ssl_bio, sbuf, sizeof(sbuf));
 644                                 if (r < 0)
 645                                         {
 646                                         if (!BIO_should_retry(s_ssl_bio))
 647                                                 {
 648                                                 fprintf(stderr,"ERROR in SERVER\n");
 649                                                 goto err;
 650                                                 }
 651                                         /* blah, blah */
 652                                         }
 653                                 else if (r == 0)
 654                                         {
 655                                         fprintf(stderr,"SSL SERVER STARTUP FAILED\n");
 656                                         goto err;
 657                                         }
 658                                 else
 659                                         {
 660                                         if (debug)
 661                                                 printf("server read %d\n", r);
 662                                         sr_num -= r;
 663                                         }
 664                                 }
 665                         }
 666
 667                         {
 668                         /* "I/O" BETWEEN CLIENT AND SERVER. */
 669
 670                         size_t r1, r2;
 671                         BIO *io1 = server_io, *io2 = client_io;
 672                         /* we use the non-copying interface for io1
 673                          * and the standard BIO_write/BIO_read interface for io2
 674                          */
 675
 676                         static int prev_progress = 1;
 677                         int progress = 0;
 678
 679                         /* io1 to io2 */
 680                         do
 681                                 {
 682                                 size_t num;
 683                                 int r;
 684
 685                                 r1 = BIO_ctrl_pending(io1);
 686                                 r2 = BIO_ctrl_get_write_guarantee(io2);
 687
 688                                 num = r1;
 689                                 if (r2 < num)
 690                                         num = r2;
 691                                 if (num)
 692                                         {
 693                                         char *dataptr;
 694
 695                                         if (INT_MAX < num) /* yeah, right */
 696                                                 num = INT_MAX;
 697
 698                                         r = BIO_nread(io1, &dataptr, (int)num);
 699                                         assert(r > 0);
 700                                         assert(r <= (int)num);
 701                                         /* possibly r < num (non-contiguous data) */
 702                                         num = r;
 703                                         r = BIO_write(io2, dataptr, (int)num);
 704                                         if (r != (int)num) /* can't happen */
 705                                                 {
 706                                                 fprintf(stderr, "ERROR: BIO_write could not write "
 707                                                         "BIO_ctrl_get_write_guarantee() bytes");
 708                                                 goto err;
 709                                                 }
 710                                         progress = 1;
 711
 712                                         if (debug)
 713                                                 printf((io1 == client_io) ?
 714                                                         "C->S relaying: %d bytes\n" :
 715                                                         "S->C relaying: %d bytes\n",
 716                                                         (int)num);
 717                                         }
 718                                 }
 719                         while (r1 && r2);
 720
 721                         /* io2 to io1 */
 722                         {
 723                                 size_t num;
 724                                 int r;
 725
 726                                 r1 = BIO_ctrl_pending(io2);
 727                                 r2 = BIO_ctrl_get_read_request(io1);
 728                                 /* here we could use ..._get_write_guarantee instead of
 729                                  * ..._get_read_request, but by using the latter
 730                                  * we test restartability of the SSL implementation
 731                                  * more thoroughly */
 732                                 num = r1;
 733                                 if (r2 < num)
 734                                         num = r2;
 735                                 if (num)
 736                                         {
 737                                         char *dataptr;
 738
 739                                         if (INT_MAX < num)
 740                                                 num = INT_MAX;
 741
 742                                         if (num > 1)
 743                                                 --num; /* test restartability even more thoroughly */
 744
 745                                         r = BIO_nwrite(io1, &dataptr, (int)num);
 746                                         assert(r > 0);
 747                                         assert(r <= (int)num);
 748                                         num = r;
 749                                         r = BIO_read(io2, dataptr, (int)num);
 750                                         if (r != (int)num) /* can't happen */
 751                                                 {
 752                                                 fprintf(stderr, "ERROR: BIO_read could not read "
 753                                                         "BIO_ctrl_pending() bytes");
 754                                                 goto err;
 755                                                 }
 756                                         progress = 1;
 757
 758                                         if (debug)
 759                                                 printf((io2 == client_io) ?
 760                                                         "C->S relaying: %d bytes\n" :
 761                                                         "S->C relaying: %d bytes\n",
 762                                                         (int)num);
 763                                         }
 764                         } /* no loop, BIO_ctrl_get_read_request now returns 0 anyway */
 765
 766                         if (!progress && !prev_progress)
 767                                 if (cw_num > 0 || cr_num > 0 || sw_num > 0 || sr_num > 0)
 768                                         {
 769                                         fprintf(stderr, "ERROR: got stuck\n");
 770                                         if (strcmp("SSLv2", SSL_get_version(c_ssl)) == 0)
 771                                                 {
 772                                                 fprintf(stderr, "This can happen for SSL2 because "
 773                                                         "CLIENT-FINISHED and SERVER-VERIFY are written \n"
 774                                                         "concurrently ...");
 775                                                 if (strncmp("2SCF", SSL_state_string(c_ssl), 4) == 0
 776                                                         && strncmp("2SSV", SSL_state_string(s_ssl), 4) == 0)
 777                                                         {
 778                                                         fprintf(stderr, " ok.\n");
 779                                                         goto end;
 780                                                         }
 781                                                 }
 782                                         fprintf(stderr, " ERROR.\n");
 783                                         goto err;
 784                                         }
 785                         prev_progress = progress;
 786                         }
 787                 }
 788         while (cw_num > 0 || cr_num > 0 || sw_num > 0 || sr_num > 0);
 789
 790         ciph = SSL_get_current_cipher(c_ssl);
 791         if (verbose)
 792                 fprintf(stdout,"DONE via BIO pair, protocol %s, cipher %s, %s\n",
 793                         SSL_get_version(c_ssl),
 794                         SSL_CIPHER_get_version(ciph),
 795                         SSL_CIPHER_get_name(ciph));
 796  end:
 797         ret = 0;
 798
 799  err:
 800         ERR_print_errors(bio_err);
 801
 802         if (server)
 803                 BIO_free(server);
 804         if (server_io)
 805                 BIO_free(server_io);
 806         if (client)
 807                 BIO_free(client);
 808         if (client_io)
 809                 BIO_free(client_io);
 810         if (s_ssl_bio)
 811                 BIO_free(s_ssl_bio);
 812         if (c_ssl_bio)
 813                 BIO_free(c_ssl_bio);
 814
 815         return ret;
 816         }
 817
 818
 819 #define W_READ  1
 820 #define W_WRITE 2
 821 #define C_DONE  1
 822 #define S_DONE  2
 823
 824 int doit(SSL *s_ssl, SSL *c_ssl, long count)
 825         {
 826         MS_STATIC char cbuf[1024*8],sbuf[1024*8];
 827         long cw_num=count,cr_num=count;
 828         long sw_num=count,sr_num=count;
 829         int ret=1;
 830         BIO *c_to_s=NULL;
 831         BIO *s_to_c=NULL;
 832         BIO *c_bio=NULL;
 833         BIO *s_bio=NULL;
 834         int c_r,c_w,s_r,s_w;
 835         int c_want,s_want;
 836         int i,j;
 837         int done=0;
 838         int c_write,s_write;
 839         int do_server=0,do_client=0;
 840         SSL_CIPHER *ciph;
 841
 842         c_to_s=BIO_new(BIO_s_mem());
 843         s_to_c=BIO_new(BIO_s_mem());
 844         if ((s_to_c == NULL) || (c_to_s == NULL))
 845                 {
 846                 ERR_print_errors(bio_err);
 847                 goto err;
 848                 }
 849
 850         c_bio=BIO_new(BIO_f_ssl());
 851         s_bio=BIO_new(BIO_f_ssl());
 852         if ((c_bio == NULL) || (s_bio == NULL))
 853                 {
 854                 ERR_print_errors(bio_err);
 855                 goto err;
 856                 }
 857
 858         SSL_set_connect_state(c_ssl);
 859         SSL_set_bio(c_ssl,s_to_c,c_to_s);
 860         BIO_set_ssl(c_bio,c_ssl,BIO_NOCLOSE);
 861
 862         SSL_set_accept_state(s_ssl);
 863         SSL_set_bio(s_ssl,c_to_s,s_to_c);
 864         BIO_set_ssl(s_bio,s_ssl,BIO_NOCLOSE);
 865
 866         c_r=0; s_r=1;
 867         c_w=1; s_w=0;
 868         c_want=W_WRITE;
 869         s_want=0;
 870         c_write=1,s_write=0;
 871
 872         /* We can always do writes */
 873         for (;;)
 874                 {
 875                 do_server=0;
 876                 do_client=0;
 877
 878                 i=(int)BIO_pending(s_bio);
 879                 if ((i && s_r) || s_w) do_server=1;
 880
 881                 i=(int)BIO_pending(c_bio);
 882                 if ((i && c_r) || c_w) do_client=1;
 883
 884                 if (do_server && debug)
 885                         {
 886                         if (SSL_in_init(s_ssl))
 887                                 printf("server waiting in SSL_accept - %s\n",
 888                                         SSL_state_string_long(s_ssl));
 889 /*                      else if (s_write)
 890                                 printf("server:SSL_write()\n");
 891                         else
 892                                 printf("server:SSL_read()\n"); */
 893                         }
 894
 895                 if (do_client && debug)
 896                         {
 897                         if (SSL_in_init(c_ssl))
 898                                 printf("client waiting in SSL_connect - %s\n",
 899                                         SSL_state_string_long(c_ssl));
 900 /*                      else if (c_write)
 901                                 printf("client:SSL_write()\n");
 902                         else
 903                                 printf("client:SSL_read()\n"); */
 904                         }
 905
 906                 if (!do_client && !do_server)
 907                         {
 908                         fprintf(stdout,"ERROR IN STARTUP\n");
 909                         ERR_print_errors(bio_err);
 910                         break;
 911                         }
 912                 if (do_client && !(done & C_DONE))
 913                         {
 914                         if (c_write)
 915                                 {
 916                                 j=(cw_num > (long)sizeof(cbuf))
 917                                         ?sizeof(cbuf):(int)cw_num;
 918                                 i=BIO_write(c_bio,cbuf,j);
 919                                 if (i < 0)
 920                                         {
 921                                         c_r=0;
 922                                         c_w=0;
 923                                         if (BIO_should_retry(c_bio))
 924                                                 {
 925                                                 if (BIO_should_read(c_bio))
 926                                                         c_r=1;
 927                                                 if (BIO_should_write(c_bio))
 928                                                         c_w=1;
 929                                                 }
 930                                         else
 931                                                 {
 932                                                 fprintf(stderr,"ERROR in CLIENT\n");
 933                                                 ERR_print_errors(bio_err);
 934                                                 goto err;
 935                                                 }
 936                                         }
 937                                 else if (i == 0)
 938                                         {
 939                                         fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
 940                                         goto err;
 941                                         }
 942                                 else
 943                                         {
 944                                         if (debug)
 945                                                 printf("client wrote %d\n",i);
 946                                         /* ok */
 947                                         s_r=1;
 948                                         c_write=0;
 949                                         cw_num-=i;
 950                                         }
 951                                 }
 952                         else
 953                                 {
 954                                 i=BIO_read(c_bio,cbuf,sizeof(cbuf));
 955                                 if (i < 0)
 956                                         {
 957                                         c_r=0;
 958                                         c_w=0;
 959                                         if (BIO_should_retry(c_bio))
 960                                                 {
 961                                                 if (BIO_should_read(c_bio))
 962                                                         c_r=1;
 963                                                 if (BIO_should_write(c_bio))
 964                                                         c_w=1;
 965                                                 }
 966                                         else
 967                                                 {
 968                                                 fprintf(stderr,"ERROR in CLIENT\n");
 969                                                 ERR_print_errors(bio_err);
 970                                                 goto err;
 971                                                 }
 972                                         }
 973                                 else if (i == 0)
 974                                         {
 975                                         fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
 976                                         goto err;
 977                                         }
 978                                 else
 979                                         {
 980                                         if (debug)
 981                                                 printf("client read %d\n",i);
 982                                         cr_num-=i;
 983                                         if (sw_num > 0)
 984                                                 {
 985                                                 s_write=1;
 986                                                 s_w=1;
 987                                                 }
 988                                         if (cr_num <= 0)
 989                                                 {
 990                                                 s_write=1;
 991                                                 s_w=1;
 992                                                 done=S_DONE|C_DONE;
 993                                                 }
 994                                         }
 995                                 }
 996                         }
 997
 998                 if (do_server && !(done & S_DONE))
 999                         {
1000                         if (!s_write)
1001                                 {
1002                                 i=BIO_read(s_bio,sbuf,sizeof(cbuf));
1003                                 if (i < 0)
1004                                         {
1005                                         s_r=0;
1006                                         s_w=0;
1007                                         if (BIO_should_retry(s_bio))
1008                                                 {
1009                                                 if (BIO_should_read(s_bio))
1010                                                         s_r=1;
1011                                                 if (BIO_should_write(s_bio))
1012                                                         s_w=1;
1013                                                 }
1014                                         else
1015                                                 {
1016                                                 fprintf(stderr,"ERROR in SERVER\n");
1017                                                 ERR_print_errors(bio_err);
1018                                                 goto err;
1019                                                 }
1020                                         }
1021                                 else if (i == 0)
1022                                         {
1023                                         ERR_print_errors(bio_err);
1024                                         fprintf(stderr,"SSL SERVER STARTUP FAILED in SSL_read\n");
1025                                         goto err;
1026                                         }
1027                                 else
1028                                         {
1029                                         if (debug)
1030                                                 printf("server read %d\n",i);
1031                                         sr_num-=i;
1032                                         if (cw_num > 0)
1033                                                 {
1034                                                 c_write=1;
1035                                                 c_w=1;
1036                                                 }
1037                                         if (sr_num <= 0)
1038                                                 {
1039                                                 s_write=1;
1040                                                 s_w=1;
1041                                                 c_write=0;
1042                                                 }
1043                                         }
1044                                 }
1045                         else
1046                                 {
1047                                 j=(sw_num > (long)sizeof(sbuf))?
1048                                         sizeof(sbuf):(int)sw_num;
1049                                 i=BIO_write(s_bio,sbuf,j);
1050                                 if (i < 0)
1051                                         {
1052                                         s_r=0;
1053                                         s_w=0;
1054                                         if (BIO_should_retry(s_bio))
1055                                                 {
1056                                                 if (BIO_should_read(s_bio))
1057                                                         s_r=1;
1058                                                 if (BIO_should_write(s_bio))
1059                                                         s_w=1;
1060                                                 }
1061                                         else
1062                                                 {
1063                                                 fprintf(stderr,"ERROR in SERVER\n");
1064                                                 ERR_print_errors(bio_err);
1065                                                 goto err;
1066                                                 }
1067                                         }
1068                                 else if (i == 0)
1069                                         {
1070                                         ERR_print_errors(bio_err);
1071                                         fprintf(stderr,"SSL SERVER STARTUP FAILED in SSL_write\n");
1072                                         goto err;
1073                                         }
1074                                 else
1075                                         {
1076                                         if (debug)
1077                                                 printf("server wrote %d\n",i);
1078                                         sw_num-=i;
1079                                         s_write=0;
1080                                         c_r=1;
1081                                         if (sw_num <= 0)
1082                                                 done|=S_DONE;
1083                                         }
1084                                 }
1085                         }
1086
1087                 if ((done & S_DONE) && (done & C_DONE)) break;
1088                 }
1089
1090         ciph=SSL_get_current_cipher(c_ssl);
1091         if (verbose)
1092                 fprintf(stdout,"DONE, protocol %s, cipher %s, %s\n",
1093                         SSL_get_version(c_ssl),
1094                         SSL_CIPHER_get_version(ciph),
1095                         SSL_CIPHER_get_name(ciph));
1096         ret=0;
1097 err:
1098         /* We have to set the BIO's to NULL otherwise they will be
1099          * Free()ed twice.  Once when th s_ssl is SSL_free()ed and
1100          * again when c_ssl is SSL_free()ed.
1101          * This is a hack required because s_ssl and c_ssl are sharing the same
1102          * BIO structure and SSL_set_bio() and SSL_free() automatically
1103          * BIO_free non NULL entries.
1104          * You should not normally do this or be required to do this */
1105         if (s_ssl != NULL)
1106                 {
1107                 s_ssl->rbio=NULL;
1108                 s_ssl->wbio=NULL;
1109                 }
1110         if (c_ssl != NULL)
1111                 {
1112                 c_ssl->rbio=NULL;
1113                 c_ssl->wbio=NULL;
1114                 }
1115
1116         if (c_to_s != NULL) BIO_free(c_to_s);
1117         if (s_to_c != NULL) BIO_free(s_to_c);
1118         if (c_bio != NULL) BIO_free_all(c_bio);
1119         if (s_bio != NULL) BIO_free_all(s_bio);
1120         return(ret);
1121         }
1122
1123 static int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
1124         {
1125         char *s,buf[256];
1126
1127         s=X509_NAME_oneline(X509_get_subject_name(ctx->current_cert),buf,256);
1128         if (s != NULL)
1129                 {
1130                 if (ok)
1131                         fprintf(stderr,"depth=%d %s\n",ctx->error_depth,buf);
1132                 else
1133                         fprintf(stderr,"depth=%d error=%d %s\n",
1134                                 ctx->error_depth,ctx->error,buf);
1135                 }
1136
1137         if (ok == 0)
1138                 {
1139                 switch (ctx->error)
1140                         {
1141                 case X509_V_ERR_CERT_NOT_YET_VALID:
1142                 case X509_V_ERR_CERT_HAS_EXPIRED:
1143                 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
1144                         ok=1;
1145                         }
1146                 }
1147
1148         return(ok);
1149         }
1150
1151 #ifndef NO_DH
1152 static unsigned char dh512_p[]={
1153         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
1154         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
1155         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
1156         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
1157         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
1158         0x47,0x74,0xE8,0x33,
1159         };
1160 static unsigned char dh512_g[]={
1161         0x02,
1162         };
1163
1164 static DH *get_dh512(void)
1165         {
1166         DH *dh=NULL;
1167
1168         if ((dh=DH_new()) == NULL) return(NULL);
1169         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
1170         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
1171         if ((dh->p == NULL) || (dh->g == NULL))
1172                 return(NULL);
1173         return(dh);
1174         }
1175 #endif
1176
1177 #ifndef NO_RSA
1178 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
1179         {
1180         static RSA *rsa_tmp=NULL;
1181
1182         if (rsa_tmp == NULL)
1183                 {
1184                 BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1185                 (void)BIO_flush(bio_err);
1186                 rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
1187                 BIO_printf(bio_err,"\n");
1188                 (void)BIO_flush(bio_err);
1189                 }
1190         return(rsa_tmp);
1191         }
1192 #endif
1193
1194 #ifndef NO_DSA
1195 static void MS_CALLBACK dsa_cb(int p, int n, void *arg)
1196         {
1197         char c='*';
1198         static int ok=0,num=0;
1199
1200         if (p == 0) { c='.'; num++; };
1201         if (p == 1) c='+';
1202         if (p == 2) { c='*'; ok++; }
1203         if (p == 3) c='\n';
1204         BIO_write(arg,&c,1);
1205         (void)BIO_flush(arg);
1206
1207         if (!ok && (p == 0) && (num > 1))
1208                 {
1209                 BIO_printf((BIO *)arg,"error in dsatest\n");
1210                 exit(1);
1211                 }
1212         }
1213 #endif