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