test/sslapitest.c

   1 /*
   2  * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <string.h>
  11
  12 #include <openssl/opensslconf.h>
  13 #include <openssl/bio.h>
  14 #include <openssl/crypto.h>
  15 #include <openssl/ssl.h>
  16 #include <openssl/ocsp.h>
  17
  18 #include "ssltestlib.h"
  19 #include "testutil.h"
  20 #include "test_main_custom.h"
  21
  22 static char *cert = NULL;
  23 static char *privkey = NULL;
  24
  25 static const unsigned char orespder[] = "Dummy OCSP Response";
  26 static int ocsp_server_called = 0;
  27 static int ocsp_client_called = 0;
  28
  29 static int cdummyarg = 1;
  30 static X509 *ocspcert = NULL;
  31
  32 #define NUM_EXTRA_CERTS 40
  33
  34 static int execute_test_large_message(const SSL_METHOD *smeth,
  35                                       const SSL_METHOD *cmeth, int read_ahead)
  36 {
  37     SSL_CTX *cctx = NULL, *sctx = NULL;
  38     SSL *clientssl = NULL, *serverssl = NULL;
  39     int testresult = 0;
  40     int i;
  41     BIO *certbio = BIO_new_file(cert, "r");
  42     X509 *chaincert = NULL;
  43     int certlen;
  44
  45     if (certbio == NULL) {
  46         printf("Can't load the certficate file\n");
  47         goto end;
  48     }
  49     chaincert = PEM_read_bio_X509(certbio, NULL, NULL, NULL);
  50     BIO_free(certbio);
  51     certbio = NULL;
  52     if (chaincert == NULL) {
  53         printf("Unable to load certificate for chain\n");
  54         goto end;
  55     }
  56
  57     if (!create_ssl_ctx_pair(smeth, cmeth, &sctx,
  58                              &cctx, cert, privkey)) {
  59         printf("Unable to create SSL_CTX pair\n");
  60         goto end;
  61     }
  62
  63     if(read_ahead) {
  64         /*
  65          * Test that read_ahead works correctly when dealing with large
  66          * records
  67          */
  68         SSL_CTX_set_read_ahead(cctx, 1);
  69     }
  70
  71     /*
  72      * We assume the supplied certificate is big enough so that if we add
  73      * NUM_EXTRA_CERTS it will make the overall message large enough. The
  74      * default buffer size is requested to be 16k, but due to the way BUF_MEM
  75      * works, it ends up allocing a little over 21k (16 * 4/3). So, in this test
  76      * we need to have a message larger than that.
  77      */
  78     certlen = i2d_X509(chaincert, NULL);
  79     OPENSSL_assert((certlen * NUM_EXTRA_CERTS)
  80                    > ((SSL3_RT_MAX_PLAIN_LENGTH * 4) / 3));
  81     for (i = 0; i < NUM_EXTRA_CERTS; i++) {
  82         if (!X509_up_ref(chaincert)) {
  83             printf("Unable to up ref cert\n");
  84             goto end;
  85         }
  86         if (!SSL_CTX_add_extra_chain_cert(sctx, chaincert)) {
  87             printf("Unable to add extra chain cert %d\n", i);
  88             X509_free(chaincert);
  89             goto end;
  90         }
  91     }
  92
  93     if (!create_ssl_objects(sctx, cctx, &serverssl, &clientssl, NULL, NULL)) {
  94         printf("Unable to create SSL objects\n");
  95         goto end;
  96     }
  97
  98     if (!create_ssl_connection(serverssl, clientssl)) {
  99         printf("Unable to create SSL connection\n");
 100         goto end;
 101     }
 102
 103     testresult = 1;
 104
 105  end:
 106     X509_free(chaincert);
 107     SSL_free(serverssl);
 108     SSL_free(clientssl);
 109     SSL_CTX_free(sctx);
 110     SSL_CTX_free(cctx);
 111
 112     return testresult;
 113 }
 114
 115 static int test_large_message_tls(void)
 116 {
 117     return execute_test_large_message(TLS_server_method(), TLS_client_method(),
 118                                       0);
 119 }
 120
 121 static int test_large_message_tls_read_ahead(void)
 122 {
 123     return execute_test_large_message(TLS_server_method(), TLS_client_method(),
 124                                       1);
 125 }
 126
 127 #ifndef OPENSSL_NO_DTLS
 128 static int test_large_message_dtls(void)
 129 {
 130     /*
 131      * read_ahead is not relevant to DTLS because DTLS always acts as if
 132      * read_ahead is set.
 133      */
 134     return execute_test_large_message(DTLS_server_method(),
 135                                       DTLS_client_method(), 0);
 136 }
 137 #endif
 138
 139 static int ocsp_server_cb(SSL *s, void *arg)
 140 {
 141     int *argi = (int *)arg;
 142     unsigned char *orespdercopy = NULL;
 143     STACK_OF(OCSP_RESPID) *ids = NULL;
 144     OCSP_RESPID *id = NULL;
 145
 146     if (*argi == 2) {
 147         /* In this test we are expecting exactly 1 OCSP_RESPID */
 148         SSL_get_tlsext_status_ids(s, &ids);
 149         if (ids == NULL || sk_OCSP_RESPID_num(ids) != 1)
 150             return SSL_TLSEXT_ERR_ALERT_FATAL;
 151
 152         id = sk_OCSP_RESPID_value(ids, 0);
 153         if (id == NULL || !OCSP_RESPID_match(id, ocspcert))
 154             return SSL_TLSEXT_ERR_ALERT_FATAL;
 155     } else if (*argi != 1) {
 156         return SSL_TLSEXT_ERR_ALERT_FATAL;
 157     }
 158
 159
 160     orespdercopy = OPENSSL_memdup(orespder, sizeof(orespder));
 161     if (orespdercopy == NULL)
 162         return SSL_TLSEXT_ERR_ALERT_FATAL;
 163
 164     SSL_set_tlsext_status_ocsp_resp(s, orespdercopy, sizeof(orespder));
 165
 166     ocsp_server_called = 1;
 167
 168     return SSL_TLSEXT_ERR_OK;
 169 }
 170
 171 static int ocsp_client_cb(SSL *s, void *arg)
 172 {
 173     int *argi = (int *)arg;
 174     const unsigned char *respderin;
 175     size_t len;
 176
 177     if (*argi != 1 && *argi != 2)
 178         return 0;
 179
 180     len = SSL_get_tlsext_status_ocsp_resp(s, &respderin);
 181
 182     if (memcmp(orespder, respderin, len) != 0)
 183         return 0;
 184
 185     ocsp_client_called = 1;
 186
 187     return 1;
 188 }
 189
 190 static int test_tlsext_status_type(void)
 191 {
 192     SSL_CTX *cctx = NULL, *sctx = NULL;
 193     SSL *clientssl = NULL, *serverssl = NULL;
 194     int testresult = 0;
 195     STACK_OF(OCSP_RESPID) *ids = NULL;
 196     OCSP_RESPID *id = NULL;
 197     BIO *certbio = NULL;
 198
 199     if (!create_ssl_ctx_pair(TLS_server_method(), TLS_client_method(), &sctx,
 200                              &cctx, cert, privkey)) {
 201         printf("Unable to create SSL_CTX pair\n");
 202         return 0;
 203     }
 204
 205     if (SSL_CTX_get_tlsext_status_type(cctx) != -1) {
 206         printf("Unexpected initial value for "
 207                "SSL_CTX_get_tlsext_status_type()\n");
 208         goto end;
 209     }
 210
 211     /* First just do various checks getting and setting tlsext_status_type */
 212
 213     clientssl = SSL_new(cctx);
 214     if (SSL_get_tlsext_status_type(clientssl) != -1) {
 215         printf("Unexpected initial value for SSL_get_tlsext_status_type()\n");
 216         goto end;
 217     }
 218
 219     if (!SSL_set_tlsext_status_type(clientssl, TLSEXT_STATUSTYPE_ocsp)) {
 220         printf("Unexpected fail for SSL_set_tlsext_status_type()\n");
 221         goto end;
 222     }
 223
 224     if (SSL_get_tlsext_status_type(clientssl) != TLSEXT_STATUSTYPE_ocsp) {
 225         printf("Unexpected result for SSL_get_tlsext_status_type()\n");
 226         goto end;
 227     }
 228
 229     SSL_free(clientssl);
 230     clientssl = NULL;
 231
 232     if (!SSL_CTX_set_tlsext_status_type(cctx, TLSEXT_STATUSTYPE_ocsp)) {
 233         printf("Unexpected fail for SSL_CTX_set_tlsext_status_type()\n");
 234         goto end;
 235     }
 236
 237     if (SSL_CTX_get_tlsext_status_type(cctx) != TLSEXT_STATUSTYPE_ocsp) {
 238         printf("Unexpected result for SSL_CTX_get_tlsext_status_type()\n");
 239         goto end;
 240     }
 241
 242     clientssl = SSL_new(cctx);
 243
 244     if (SSL_get_tlsext_status_type(clientssl) != TLSEXT_STATUSTYPE_ocsp) {
 245         printf("Unexpected result for SSL_get_tlsext_status_type() (test 2)\n");
 246         goto end;
 247     }
 248
 249     SSL_free(clientssl);
 250     clientssl = NULL;
 251
 252     /*
 253      * Now actually do a handshake and check OCSP information is exchanged and
 254      * the callbacks get called
 255      */
 256
 257     SSL_CTX_set_tlsext_status_cb(cctx, ocsp_client_cb);
 258     SSL_CTX_set_tlsext_status_arg(cctx, &cdummyarg);
 259     SSL_CTX_set_tlsext_status_cb(sctx, ocsp_server_cb);
 260     SSL_CTX_set_tlsext_status_arg(sctx, &cdummyarg);
 261
 262     if (!create_ssl_objects(sctx, cctx, &serverssl, &clientssl, NULL, NULL)) {
 263         printf("Unable to create SSL objects\n");
 264         goto end;
 265     }
 266
 267     if (!create_ssl_connection(serverssl, clientssl)) {
 268         printf("Unable to create SSL connection\n");
 269         goto end;
 270     }
 271
 272     if (!ocsp_client_called || !ocsp_server_called) {
 273         printf("OCSP callbacks not called\n");
 274         goto end;
 275     }
 276
 277     SSL_free(serverssl);
 278     SSL_free(clientssl);
 279     serverssl = NULL;
 280     clientssl = NULL;
 281
 282     /* Try again but this time force the server side callback to fail */
 283     ocsp_client_called = 0;
 284     ocsp_server_called = 0;
 285     cdummyarg = 0;
 286
 287     if (!create_ssl_objects(sctx, cctx, &serverssl, &clientssl, NULL, NULL)) {
 288         printf("Unable to create SSL objects\n");
 289         goto end;
 290     }
 291
 292     /* This should fail because the callback will fail */
 293     if (create_ssl_connection(serverssl, clientssl)) {
 294         printf("Unexpected success creating the connection\n");
 295         goto end;
 296     }
 297
 298     if (ocsp_client_called || ocsp_server_called) {
 299         printf("OCSP callbacks successfully called unexpectedly\n");
 300         goto end;
 301     }
 302
 303     SSL_free(serverssl);
 304     SSL_free(clientssl);
 305     serverssl = NULL;
 306     clientssl = NULL;
 307
 308     /*
 309      * This time we'll get the client to send an OCSP_RESPID that it will
 310      * accept.
 311      */
 312     ocsp_client_called = 0;
 313     ocsp_server_called = 0;
 314     cdummyarg = 2;
 315
 316     if (!create_ssl_objects(sctx, cctx, &serverssl, &clientssl, NULL, NULL)) {
 317         printf("Unable to create SSL objects\n");
 318         goto end;
 319     }
 320
 321     /*
 322      * We'll just use any old cert for this test - it doesn't have to be an OCSP
 323      * specifc one. We'll use the server cert.
 324      */
 325     certbio = BIO_new_file(cert, "r");
 326     if (certbio == NULL) {
 327         printf("Can't load the certficate file\n");
 328         goto end;
 329     }
 330     id = OCSP_RESPID_new();
 331     ids = sk_OCSP_RESPID_new_null();
 332     ocspcert = PEM_read_bio_X509(certbio, NULL, NULL, NULL);
 333     if (id == NULL || ids == NULL || ocspcert == NULL
 334             || !OCSP_RESPID_set_by_key(id, ocspcert)
 335             || !sk_OCSP_RESPID_push(ids, id)) {
 336         printf("Unable to set OCSP_RESPIDs\n");
 337         goto end;
 338     }
 339     id = NULL;
 340     SSL_set_tlsext_status_ids(clientssl, ids);
 341     /* Control has been transferred */
 342     ids = NULL;
 343
 344     BIO_free(certbio);
 345     certbio = NULL;
 346
 347     if (!create_ssl_connection(serverssl, clientssl)) {
 348         printf("Unable to create SSL connection\n");
 349         goto end;
 350     }
 351
 352     if (!ocsp_client_called || !ocsp_server_called) {
 353         printf("OCSP callbacks not called\n");
 354         goto end;
 355     }
 356
 357     testresult = 1;
 358
 359  end:
 360     SSL_free(serverssl);
 361     SSL_free(clientssl);
 362     SSL_CTX_free(sctx);
 363     SSL_CTX_free(cctx);
 364     sk_OCSP_RESPID_pop_free(ids, OCSP_RESPID_free);
 365     OCSP_RESPID_free(id);
 366     BIO_free(certbio);
 367     X509_free(ocspcert);
 368     ocspcert = NULL;
 369
 370     return testresult;
 371 }
 372
 373 typedef struct ssl_session_test_fixture {
 374     const char *test_case_name;
 375     int use_ext_cache;
 376     int use_int_cache;
 377 } SSL_SESSION_TEST_FIXTURE;
 378
 379 static int new_called = 0, remove_called = 0;
 380
 381 static SSL_SESSION_TEST_FIXTURE
 382 ssl_session_set_up(const char *const test_case_name)
 383 {
 384     SSL_SESSION_TEST_FIXTURE fixture;
 385
 386     fixture.test_case_name = test_case_name;
 387     fixture.use_ext_cache = 1;
 388     fixture.use_int_cache = 1;
 389
 390     new_called = remove_called = 0;
 391
 392     return fixture;
 393 }
 394
 395 static void ssl_session_tear_down(SSL_SESSION_TEST_FIXTURE fixture)
 396 {
 397 }
 398
 399 static int new_session_cb(SSL *ssl, SSL_SESSION *sess)
 400 {
 401     new_called++;
 402
 403     return 1;
 404 }
 405
 406 static void remove_session_cb(SSL_CTX *ctx, SSL_SESSION *sess)
 407 {
 408     remove_called++;
 409 }
 410
 411 static int execute_test_session(SSL_SESSION_TEST_FIXTURE fix)
 412 {
 413     SSL_CTX *sctx = NULL, *cctx = NULL;
 414     SSL *serverssl1 = NULL, *clientssl1 = NULL;
 415     SSL *serverssl2 = NULL, *clientssl2 = NULL;
 416 #ifndef OPENSSL_NO_TLS1_1
 417     SSL *serverssl3 = NULL, *clientssl3 = NULL;
 418 #endif
 419     SSL_SESSION *sess1 = NULL, *sess2 = NULL;
 420     int testresult = 0;
 421
 422     if (!create_ssl_ctx_pair(TLS_server_method(), TLS_client_method(), &sctx,
 423                              &cctx, cert, privkey)) {
 424         printf("Unable to create SSL_CTX pair\n");
 425         return 0;
 426     }
 427
 428 #ifndef OPENSSL_NO_TLS1_2
 429     /* Only allow TLS1.2 so we can force a connection failure later */
 430     SSL_CTX_set_min_proto_version(cctx, TLS1_2_VERSION);
 431 #endif
 432
 433     /*
 434      * TODO(TLS1.3): Test temporarily disabled for TLS1.3 until we've
 435      * implemented session resumption.
 436      */
 437     SSL_CTX_set_max_proto_version(cctx, TLS1_2_VERSION);
 438
 439     /* Set up session cache */
 440     if (fix.use_ext_cache) {
 441         SSL_CTX_sess_set_new_cb(cctx, new_session_cb);
 442         SSL_CTX_sess_set_remove_cb(cctx, remove_session_cb);
 443     }
 444     if (fix.use_int_cache) {
 445         /* Also covers instance where both are set */
 446         SSL_CTX_set_session_cache_mode(cctx, SSL_SESS_CACHE_CLIENT);
 447     } else {
 448         SSL_CTX_set_session_cache_mode(cctx,
 449                                        SSL_SESS_CACHE_CLIENT
 450                                        | SSL_SESS_CACHE_NO_INTERNAL_STORE);
 451     }
 452
 453     if (!create_ssl_objects(sctx, cctx, &serverssl1, &clientssl1, NULL,
 454                                NULL)) {
 455         printf("Unable to create SSL objects\n");
 456         goto end;
 457     }
 458
 459     if (!create_ssl_connection(serverssl1, clientssl1)) {
 460         printf("Unable to create SSL connection\n");
 461         goto end;
 462     }
 463     sess1 = SSL_get1_session(clientssl1);
 464     if (sess1 == NULL) {
 465         printf("Unexpected NULL session\n");
 466         goto end;
 467     }
 468
 469     if (fix.use_int_cache && SSL_CTX_add_session(cctx, sess1)) {
 470         /* Should have failed because it should already be in the cache */
 471         printf("Unexpected success adding session to cache\n");
 472         goto end;
 473     }
 474
 475     if (fix.use_ext_cache && (new_called != 1 || remove_called != 0)) {
 476         printf("Session not added to cache\n");
 477         goto end;
 478     }
 479
 480     if (!create_ssl_objects(sctx, cctx, &serverssl2, &clientssl2, NULL, NULL)) {
 481         printf("Unable to create second SSL objects\n");
 482         goto end;
 483     }
 484
 485     if (!create_ssl_connection(serverssl2, clientssl2)) {
 486         printf("Unable to create second SSL connection\n");
 487         goto end;
 488     }
 489
 490     sess2 = SSL_get1_session(clientssl2);
 491     if (sess2 == NULL) {
 492         printf("Unexpected NULL session from clientssl2\n");
 493         goto end;
 494     }
 495
 496     if (fix.use_ext_cache && (new_called != 2 || remove_called != 0)) {
 497         printf("Remove session callback unexpectedly called\n");
 498         goto end;
 499     }
 500
 501     /*
 502      * This should clear sess2 from the cache because it is a "bad" session. See
 503      * SSL_set_session() documentation.
 504      */
 505     if (!SSL_set_session(clientssl2, sess1)) {
 506         printf("Unexpected failure setting session\n");
 507         goto end;
 508     }
 509
 510     if (fix.use_ext_cache && (new_called != 2 || remove_called != 1)) {
 511         printf("Failed to call callback to remove session\n");
 512         goto end;
 513     }
 514
 515
 516     if (SSL_get_session(clientssl2) != sess1) {
 517         printf("Unexpected session found\n");
 518         goto end;
 519     }
 520
 521     if (fix.use_int_cache) {
 522         if (!SSL_CTX_add_session(cctx, sess2)) {
 523             /*
 524              * Should have succeeded because it should not already be in the cache
 525              */
 526             printf("Unexpected failure adding session to cache\n");
 527             goto end;
 528         }
 529
 530         if (!SSL_CTX_remove_session(cctx, sess2)) {
 531             printf("Unexpected failure removing session from cache\n");
 532             goto end;
 533         }
 534
 535         /* This is for the purposes of internal cache testing...ignore the
 536          * counter for external cache
 537          */
 538         if (fix.use_ext_cache)
 539             remove_called--;
 540     }
 541
 542     /* This shouldn't be in the cache so should fail */
 543     if (SSL_CTX_remove_session(cctx, sess2)) {
 544         printf("Unexpected success removing session from cache\n");
 545         goto end;
 546     }
 547
 548     if (fix.use_ext_cache && (new_called != 2 || remove_called != 2)) {
 549         printf("Failed to call callback to remove session #2\n");
 550         goto end;
 551     }
 552
 553 #if !defined(OPENSSL_NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_2)
 554     /* Force a connection failure */
 555     SSL_CTX_set_max_proto_version(sctx, TLS1_1_VERSION);
 556
 557     if (!create_ssl_objects(sctx, cctx, &serverssl3, &clientssl3, NULL, NULL)) {
 558         printf("Unable to create third SSL objects\n");
 559         goto end;
 560     }
 561
 562     if (!SSL_set_session(clientssl3, sess1)) {
 563         printf("Unable to set session for third connection\n");
 564         goto end;
 565     }
 566
 567     /* This should fail because of the mismatched protocol versions */
 568     if (create_ssl_connection(serverssl3, clientssl3)) {
 569         printf("Unable to create third SSL connection\n");
 570         goto end;
 571     }
 572
 573
 574     /* We should have automatically removed the session from the cache */
 575     if (fix.use_ext_cache && (new_called != 2 || remove_called != 3)) {
 576         printf("Failed to call callback to remove session #2\n");
 577         goto end;
 578     }
 579
 580     if (fix.use_int_cache && !SSL_CTX_add_session(cctx, sess2)) {
 581         /*
 582          * Should have succeeded because it should not already be in the cache
 583          */
 584         printf("Unexpected failure adding session to cache #2\n");
 585         goto end;
 586     }
 587 #endif
 588
 589     testresult = 1;
 590
 591  end:
 592     SSL_free(serverssl1);
 593     SSL_free(clientssl1);
 594     SSL_free(serverssl2);
 595     SSL_free(clientssl2);
 596 #ifndef OPENSSL_NO_TLS1_1
 597     SSL_free(serverssl3);
 598     SSL_free(clientssl3);
 599 #endif
 600     SSL_SESSION_free(sess1);
 601     SSL_SESSION_free(sess2);
 602     /*
 603      * Check if we need to remove any sessions up-refed for the external cache
 604      */
 605     if (new_called >= 1)
 606         SSL_SESSION_free(sess1);
 607     if (new_called >= 2)
 608         SSL_SESSION_free(sess2);
 609     SSL_CTX_free(sctx);
 610     SSL_CTX_free(cctx);
 611
 612     return testresult;
 613 }
 614
 615 static int test_session_with_only_int_cache(void)
 616 {
 617     SETUP_TEST_FIXTURE(SSL_SESSION_TEST_FIXTURE, ssl_session_set_up);
 618
 619     fixture.use_ext_cache = 0;
 620
 621     EXECUTE_TEST(execute_test_session, ssl_session_tear_down);
 622 }
 623
 624 static int test_session_with_only_ext_cache(void)
 625 {
 626     SETUP_TEST_FIXTURE(SSL_SESSION_TEST_FIXTURE, ssl_session_set_up);
 627
 628     fixture.use_int_cache = 0;
 629
 630     EXECUTE_TEST(execute_test_session, ssl_session_tear_down);
 631 }
 632
 633 static int test_session_with_both_cache(void)
 634 {
 635     SETUP_TEST_FIXTURE(SSL_SESSION_TEST_FIXTURE, ssl_session_set_up);
 636
 637     EXECUTE_TEST(execute_test_session, ssl_session_tear_down);
 638 }
 639
 640 #define USE_NULL    0
 641 #define USE_BIO_1   1
 642 #define USE_BIO_2   2
 643
 644 #define TOTAL_SSL_SET_BIO_TESTS (3 * 3 * 3 * 3)
 645
 646 static void setupbio(BIO **res, BIO *bio1, BIO *bio2, int type)
 647 {
 648     switch (type) {
 649     case USE_NULL:
 650         *res = NULL;
 651         break;
 652     case USE_BIO_1:
 653         *res = bio1;
 654         break;
 655     case USE_BIO_2:
 656         *res = bio2;
 657         break;
 658     }
 659 }
 660
 661 static int test_ssl_set_bio(int idx)
 662 {
 663     SSL_CTX *ctx = SSL_CTX_new(TLS_method());
 664     BIO *bio1 = NULL;
 665     BIO *bio2 = NULL;
 666     BIO *irbio = NULL, *iwbio = NULL, *nrbio = NULL, *nwbio = NULL;
 667     SSL *ssl = NULL;
 668     int initrbio, initwbio, newrbio, newwbio;
 669     int testresult = 0;
 670
 671     if (ctx == NULL) {
 672         printf("Failed to allocate SSL_CTX\n");
 673         goto end;
 674     }
 675
 676     ssl = SSL_new(ctx);
 677     if (ssl == NULL) {
 678         printf("Failed to allocate SSL object\n");
 679         goto end;
 680     }
 681
 682     initrbio = idx % 3;
 683     idx /= 3;
 684     initwbio = idx % 3;
 685     idx /= 3;
 686     newrbio = idx % 3;
 687     idx /= 3;
 688     newwbio = idx;
 689     OPENSSL_assert(newwbio <= 2);
 690
 691     if (initrbio == USE_BIO_1 || initwbio == USE_BIO_1 || newrbio == USE_BIO_1
 692             || newwbio == USE_BIO_1) {
 693         bio1 = BIO_new(BIO_s_mem());
 694         if (bio1 == NULL) {
 695             printf("Failed to allocate bio1\n");
 696             goto end;
 697         }
 698     }
 699
 700     if (initrbio == USE_BIO_2 || initwbio == USE_BIO_2 || newrbio == USE_BIO_2
 701             || newwbio == USE_BIO_2) {
 702         bio2 = BIO_new(BIO_s_mem());
 703         if (bio2 == NULL) {
 704             printf("Failed to allocate bio2\n");
 705             goto end;
 706         }
 707     }
 708
 709     setupbio(&irbio, bio1, bio2, initrbio);
 710     setupbio(&iwbio, bio1, bio2, initwbio);
 711
 712     /*
 713      * We want to maintain our own refs to these BIO, so do an up ref for each
 714      * BIO that will have ownersip transferred in the SSL_set_bio() call
 715      */
 716     if (irbio != NULL)
 717         BIO_up_ref(irbio);
 718     if (iwbio != NULL && iwbio != irbio)
 719         BIO_up_ref(iwbio);
 720
 721     SSL_set_bio(ssl, irbio, iwbio);
 722
 723     setupbio(&nrbio, bio1, bio2, newrbio);
 724     setupbio(&nwbio, bio1, bio2, newwbio);
 725
 726     /*
 727      * We will (maybe) transfer ownership again so do more up refs.
 728      * SSL_set_bio() has some really complicated ownership rules where BIOs have
 729      * already been set!
 730      */
 731     if (nrbio != NULL && nrbio != irbio && (nwbio != iwbio || nrbio != nwbio))
 732         BIO_up_ref(nrbio);
 733     if (nwbio != NULL && nwbio != nrbio && (nwbio != iwbio || (nwbio == iwbio && irbio == iwbio)))
 734         BIO_up_ref(nwbio);
 735
 736     SSL_set_bio(ssl, nrbio, nwbio);
 737
 738     testresult = 1;
 739
 740  end:
 741     SSL_free(ssl);
 742     BIO_free(bio1);
 743     BIO_free(bio2);
 744     /*
 745      * This test is checking that the ref counting for SSL_set_bio is correct.
 746      * If we get here and we did too many frees then we will fail in the above
 747      * functions. If we haven't done enough then this will only be detected in
 748      * a crypto-mdebug build
 749      */
 750     SSL_CTX_free(ctx);
 751
 752     return testresult;
 753 }
 754
 755 typedef struct ssl_bio_test_fixture {
 756     const char *test_case_name;
 757     int pop_ssl;
 758     enum { NO_BIO_CHANGE, CHANGE_RBIO, CHANGE_WBIO } change_bio;
 759 } SSL_BIO_TEST_FIXTURE;
 760
 761 static SSL_BIO_TEST_FIXTURE ssl_bio_set_up(const char *const test_case_name)
 762 {
 763     SSL_BIO_TEST_FIXTURE fixture;
 764
 765     fixture.test_case_name = test_case_name;
 766     fixture.pop_ssl = 0;
 767     fixture.change_bio = NO_BIO_CHANGE;
 768
 769     return fixture;
 770 }
 771
 772 static void ssl_bio_tear_down(SSL_BIO_TEST_FIXTURE fixture)
 773 {
 774 }
 775
 776 static int execute_test_ssl_bio(SSL_BIO_TEST_FIXTURE fix)
 777 {
 778     BIO *sslbio = NULL, *membio1 = NULL, *membio2 = NULL;
 779     SSL_CTX *ctx = SSL_CTX_new(TLS_method());
 780     SSL *ssl = NULL;
 781     int testresult = 0;
 782
 783     if (ctx == NULL) {
 784         printf("Failed to allocate SSL_CTX\n");
 785         return 0;
 786     }
 787
 788     ssl = SSL_new(ctx);
 789     if (ssl == NULL) {
 790         printf("Failed to allocate SSL object\n");
 791         goto end;
 792     }
 793
 794     sslbio = BIO_new(BIO_f_ssl());
 795     membio1 = BIO_new(BIO_s_mem());
 796
 797     if (sslbio == NULL || membio1 == NULL) {
 798         printf("Malloc failure creating BIOs\n");
 799         goto end;
 800     }
 801
 802     BIO_set_ssl(sslbio, ssl, BIO_CLOSE);
 803
 804     /*
 805      * If anything goes wrong here then we could leak memory, so this will
 806      * be caught in a crypto-mdebug build
 807      */
 808     BIO_push(sslbio, membio1);
 809
 810     /* Verify chaning the rbio/wbio directly does not cause leaks */
 811     if (fix.change_bio != NO_BIO_CHANGE) {
 812         membio2 = BIO_new(BIO_s_mem());
 813         if (membio2 == NULL) {
 814             printf("Malloc failure creating membio2\n");
 815             goto end;
 816         }
 817         if (fix.change_bio == CHANGE_RBIO)
 818             SSL_set0_rbio(ssl, membio2);
 819         else
 820             SSL_set0_wbio(ssl, membio2);
 821     }
 822     ssl = NULL;
 823
 824     if (fix.pop_ssl)
 825         BIO_pop(sslbio);
 826     else
 827         BIO_pop(membio1);
 828
 829     testresult = 1;
 830  end:
 831     BIO_free(membio1);
 832     BIO_free(sslbio);
 833     SSL_free(ssl);
 834     SSL_CTX_free(ctx);
 835
 836     return testresult;
 837 }
 838
 839 static int test_ssl_bio_pop_next_bio(void)
 840 {
 841     SETUP_TEST_FIXTURE(SSL_BIO_TEST_FIXTURE, ssl_bio_set_up);
 842
 843     EXECUTE_TEST(execute_test_ssl_bio, ssl_bio_tear_down);
 844 }
 845
 846 static int test_ssl_bio_pop_ssl_bio(void)
 847 {
 848     SETUP_TEST_FIXTURE(SSL_BIO_TEST_FIXTURE, ssl_bio_set_up);
 849
 850     fixture.pop_ssl = 1;
 851
 852     EXECUTE_TEST(execute_test_ssl_bio, ssl_bio_tear_down);
 853 }
 854
 855 static int test_ssl_bio_change_rbio(void)
 856 {
 857     SETUP_TEST_FIXTURE(SSL_BIO_TEST_FIXTURE, ssl_bio_set_up);
 858
 859     fixture.change_bio = CHANGE_RBIO;
 860
 861     EXECUTE_TEST(execute_test_ssl_bio, ssl_bio_tear_down);
 862 }
 863
 864 static int test_ssl_bio_change_wbio(void)
 865 {
 866     SETUP_TEST_FIXTURE(SSL_BIO_TEST_FIXTURE, ssl_bio_set_up);
 867
 868     fixture.change_bio = CHANGE_WBIO;
 869
 870     EXECUTE_TEST(execute_test_ssl_bio, ssl_bio_tear_down);
 871 }
 872
 873 int test_main(int argc, char *argv[])
 874 {
 875     int testresult = 1;
 876
 877     if (argc != 3) {
 878         printf("Invalid argument count\n");
 879         return 1;
 880     }
 881
 882     cert = argv[1];
 883     privkey = argv[2];
 884
 885     ADD_TEST(test_large_message_tls);
 886     ADD_TEST(test_large_message_tls_read_ahead);
 887 #ifndef OPENSSL_NO_DTLS
 888     ADD_TEST(test_large_message_dtls);
 889 #endif
 890     ADD_TEST(test_tlsext_status_type);
 891     ADD_TEST(test_session_with_only_int_cache);
 892     ADD_TEST(test_session_with_only_ext_cache);
 893     ADD_TEST(test_session_with_both_cache);
 894     ADD_ALL_TESTS(test_ssl_set_bio, TOTAL_SSL_SET_BIO_TESTS);
 895     ADD_TEST(test_ssl_bio_pop_next_bio);
 896     ADD_TEST(test_ssl_bio_pop_ssl_bio);
 897     ADD_TEST(test_ssl_bio_change_rbio);
 898     ADD_TEST(test_ssl_bio_change_wbio);
 899
 900     testresult = run_tests(argv[0]);
 901
 902     bio_s_mempacket_test_free();
 903
 904     return testresult;
 905 }