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