crypto/init.c

   1 /*
   2  * Written by Matt Caswell for the OpenSSL project.
   3  */
   4 /* ====================================================================
   5  * Copyright (c) 2016 The OpenSSL Project.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in
  16  *    the documentation and/or other materials provided with the
  17  *    distribution.
  18  *
  19  * 3. All advertising materials mentioning features or use of this
  20  *    software must display the following acknowledgment:
  21  *    "This product includes software developed by the OpenSSL Project
  22  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  23  *
  24  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  25  *    endorse or promote products derived from this software without
  26  *    prior written permission. For written permission, please contact
  27  *    openssl-core@openssl.org.
  28  *
  29  * 5. Products derived from this software may not be called "OpenSSL"
  30  *    nor may "OpenSSL" appear in their names without prior written
  31  *    permission of the OpenSSL Project.
  32  *
  33  * 6. Redistributions of any form whatsoever must retain the following
  34  *    acknowledgment:
  35  *    "This product includes software developed by the OpenSSL Project
  36  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  37  *
  38  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  39  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  40  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  41  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  42  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  43  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  44  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  45  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  46  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  47  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  48  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  49  * OF THE POSSIBILITY OF SUCH DAMAGE.
  50  * ====================================================================
  51  *
  52  * This product includes cryptographic software written by Eric Young
  53  * (eay@cryptsoft.com).  This product includes software written by Tim
  54  * Hudson (tjh@cryptsoft.com).
  55  *
  56  */
  57
  58 #include <internal/threads.h>
  59 #include <internal/cryptlib_int.h>
  60 #include <openssl/err.h>
  61 #include <internal/rand.h>
  62 #include <internal/bio.h>
  63 #include <openssl/evp.h>
  64 #include <internal/evp_int.h>
  65 #include <internal/conf.h>
  66 #include <internal/async.h>
  67 #include <internal/engine.h>
  68 #include <internal/comp.h>
  69 #include <internal/err.h>
  70 #include <internal/objects.h>
  71 #include <stdlib.h>
  72 #include <assert.h>
  73
  74 static int stopped = 0;
  75
  76 static void ossl_init_thread_stop(struct thread_local_inits_st *locals);
  77
  78 static CRYPTO_THREAD_LOCAL threadstopkey;
  79
  80 static void ossl_init_thread_stop_wrap(void *local)
  81 {
  82     ossl_init_thread_stop((struct thread_local_inits_st *)local);
  83 }
  84
  85 static struct thread_local_inits_st *ossl_init_get_thread_local(int alloc)
  86 {
  87     struct thread_local_inits_st *local =
  88         CRYPTO_THREAD_get_local(&threadstopkey);
  89
  90     if (local == NULL && alloc) {
  91         local = OPENSSL_zalloc(sizeof *local);
  92         CRYPTO_THREAD_set_local(&threadstopkey, local);
  93     }
  94     if (!alloc) {
  95         CRYPTO_THREAD_set_local(&threadstopkey, NULL);
  96     }
  97
  98     return local;
  99 }
 100
 101 typedef struct ossl_init_stop_st OPENSSL_INIT_STOP;
 102 struct ossl_init_stop_st {
 103     void (*handler)(void);
 104     OPENSSL_INIT_STOP *next;
 105 };
 106
 107 static OPENSSL_INIT_STOP *stop_handlers = NULL;
 108 static CRYPTO_RWLOCK *init_lock = NULL;
 109
 110 static CRYPTO_ONCE base = CRYPTO_ONCE_STATIC_INIT;
 111 static int base_inited = 0;
 112 static void ossl_init_base(void)
 113 {
 114 #ifdef OPENSSL_INIT_DEBUG
 115     fprintf(stderr, "OPENSSL_INIT: ossl_init_base: Setting up stop handlers\n");
 116 #endif
 117     /*
 118      * We use a dummy thread local key here. We use the destructor to detect
 119      * when the thread is going to stop (where that feature is available)
 120      */
 121     CRYPTO_THREAD_init_local(&threadstopkey, ossl_init_thread_stop_wrap);
 122 #ifndef OPENSSL_SYS_UEFI
 123     atexit(OPENSSL_cleanup);
 124 #endif
 125     init_lock = CRYPTO_THREAD_lock_new();
 126     OPENSSL_cpuid_setup();
 127     base_inited = 1;
 128 }
 129
 130 static CRYPTO_ONCE load_crypto_strings = CRYPTO_ONCE_STATIC_INIT;
 131 static int load_crypto_strings_inited = 0;
 132 static void ossl_init_no_load_crypto_strings(void)
 133 {
 134     /* Do nothing in this case */
 135     return;
 136 }
 137
 138 static void ossl_init_load_crypto_strings(void)
 139 {
 140     /*
 141      * OPENSSL_NO_AUTOERRINIT is provided here to prevent at compile time
 142      * pulling in all the error strings during static linking
 143      */
 144 #if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT)
 145 # ifdef OPENSSL_INIT_DEBUG
 146     fprintf(stderr, "OPENSSL_INIT: ossl_init_load_crypto_strings: "
 147                     "err_load_crypto_strings_intern()\n");
 148 # endif
 149     err_load_crypto_strings_intern();
 150 #endif
 151     load_crypto_strings_inited = 1;
 152 }
 153
 154 static CRYPTO_ONCE add_all_ciphers = CRYPTO_ONCE_STATIC_INIT;
 155 static void ossl_init_add_all_ciphers(void)
 156 {
 157     /*
 158      * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time
 159      * pulling in all the ciphers during static linking
 160      */
 161 #ifndef OPENSSL_NO_AUTOALGINIT
 162 # ifdef OPENSSL_INIT_DEBUG
 163     fprintf(stderr, "OPENSSL_INIT: ossl_init_add_all_ciphers: "
 164                     "openssl_add_all_ciphers_internal()\n");
 165 # endif
 166     openssl_add_all_ciphers_internal();
 167 # ifndef OPENSSL_NO_ENGINE
 168 #  if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV)
 169     ENGINE_setup_bsd_cryptodev();
 170 #  endif
 171 # endif
 172 #endif
 173 }
 174
 175 static CRYPTO_ONCE add_all_digests = CRYPTO_ONCE_STATIC_INIT;
 176 static void ossl_init_add_all_digests(void)
 177 {
 178     /*
 179      * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time
 180      * pulling in all the ciphers during static linking
 181      */
 182 #ifndef OPENSSL_NO_AUTOALGINIT
 183 # ifdef OPENSSL_INIT_DEBUG
 184     fprintf(stderr, "OPENSSL_INIT: ossl_init_add_all_digests: "
 185                     "openssl_add_all_digests_internal()\n");
 186 # endif
 187     openssl_add_all_digests_internal();
 188 # ifndef OPENSSL_NO_ENGINE
 189 #  if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV)
 190     ENGINE_setup_bsd_cryptodev();
 191 #  endif
 192 # endif
 193 #endif
 194 }
 195
 196 static void ossl_init_no_add_algs(void)
 197 {
 198     /* Do nothing */
 199     return;
 200 }
 201
 202 static CRYPTO_ONCE config = CRYPTO_ONCE_STATIC_INIT;
 203 static int config_inited = 0;
 204 static const char *config_filename;
 205 static void ossl_init_config(void)
 206 {
 207 #ifdef OPENSSL_INIT_DEBUG
 208     fprintf(stderr,
 209             "OPENSSL_INIT: ossl_init_config: openssl_config_internal(%s)\n",
 210             config_filename==NULL?"NULL":config_filename);
 211 #endif
 212     openssl_config_internal(config_filename);
 213     config_inited = 1;
 214 }
 215 static void ossl_init_no_config(void)
 216 {
 217 #ifdef OPENSSL_INIT_DEBUG
 218     fprintf(stderr,
 219             "OPENSSL_INIT: ossl_init_config: openssl_no_config_internal()\n");
 220 #endif
 221     openssl_no_config_internal();
 222     config_inited = 1;
 223 }
 224
 225 static CRYPTO_ONCE async = CRYPTO_ONCE_STATIC_INIT;
 226 static int async_inited = 0;
 227 static void ossl_init_async(void)
 228 {
 229 #ifdef OPENSSL_INIT_DEBUG
 230     fprintf(stderr, "OPENSSL_INIT: ossl_init_async: async_init()\n");
 231 #endif
 232     async_init();
 233     async_inited = 1;
 234 }
 235
 236 #ifndef OPENSSL_NO_ENGINE
 237 static CRYPTO_ONCE engine_openssl = CRYPTO_ONCE_STATIC_INIT;
 238 static void ossl_init_engine_openssl(void)
 239 {
 240 # ifdef OPENSSL_INIT_DEBUG
 241     fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_openssl: "
 242                     "engine_load_openssl_internal()\n");
 243 # endif
 244     engine_load_openssl_internal();
 245 }
 246 # if !defined(OPENSSL_NO_HW) && \
 247     (defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV))
 248 static CRYPTO_ONCE engine_cryptodev = CRYPTO_ONCE_STATIC_INIT;
 249 static void ossl_init_engine_cryptodev(void)
 250 {
 251 #  ifdef OPENSSL_INIT_DEBUG
 252     fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_cryptodev: "
 253                     "engine_load_cryptodev_internal()\n");
 254 #  endif
 255     engine_load_cryptodev_internal();
 256 }
 257 # endif
 258
 259 # ifndef OPENSSL_NO_RDRAND
 260 static CRYPTO_ONCE engine_rdrand = CRYPTO_ONCE_STATIC_INIT;
 261 static void ossl_init_engine_rdrand(void)
 262 {
 263 #  ifdef OPENSSL_INIT_DEBUG
 264     fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_rdrand: "
 265                     "engine_load_rdrand_internal()\n");
 266 #  endif
 267     engine_load_rdrand_internal();
 268 }
 269 # endif
 270 static CRYPTO_ONCE engine_dynamic = CRYPTO_ONCE_STATIC_INIT;
 271 static void ossl_init_engine_dynamic(void)
 272 {
 273 # ifdef OPENSSL_INIT_DEBUG
 274     fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_dynamic: "
 275                     "engine_load_dynamic_internal()\n");
 276 # endif
 277     engine_load_dynamic_internal();
 278 }
 279 # ifndef OPENSSL_NO_STATIC_ENGINE
 280 #  if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK)
 281 static CRYPTO_ONCE engine_padlock = CRYPTO_ONCE_STATIC_INIT;
 282 static void ossl_init_engine_padlock(void)
 283 {
 284 #   ifdef OPENSSL_INIT_DEBUG
 285     fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_padlock: "
 286                     "engine_load_padlock_internal()\n");
 287 #   endif
 288     engine_load_padlock_internal();
 289 }
 290 #  endif
 291 #  if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG)
 292 static CRYPTO_ONCE engine_capi = CRYPTO_ONCE_STATIC_INIT;
 293 static void ossl_init_engine_capi(void)
 294 {
 295 #   ifdef OPENSSL_INIT_DEBUG
 296     fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_capi: "
 297                     "engine_load_capi_internal()\n");
 298 #   endif
 299     engine_load_capi_internal();
 300 }
 301 #  endif
 302 static CRYPTO_ONCE engine_dasync = CRYPTO_ONCE_STATIC_INIT;
 303 static void ossl_init_engine_dasync(void)
 304 {
 305 # ifdef OPENSSL_INIT_DEBUG
 306     fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_dasync: "
 307                     "engine_load_dasync_internal()\n");
 308 # endif
 309     engine_load_dasync_internal();
 310 }
 311 #  if !defined(OPENSSL_NO_AFALGENG)
 312 static CRYPTO_ONCE engine_afalg = CRYPTO_ONCE_STATIC_INIT;
 313 static void ossl_init_engine_afalg(void)
 314 {
 315 #   ifdef OPENSSL_INIT_DEBUG
 316     fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_afalg: "
 317                     "engine_load_afalg_internal()\n");
 318 #   endif
 319     engine_load_afalg_internal();
 320 }
 321 #  endif
 322 # endif
 323 #endif
 324
 325 #ifndef OPENSSL_NO_COMP
 326 static CRYPTO_ONCE zlib = CRYPTO_ONCE_STATIC_INIT;
 327
 328 static int zlib_inited = 0;
 329 static void ossl_init_zlib(void)
 330 {
 331     /* Do nothing - we need to know about this for the later cleanup */
 332     zlib_inited = 1;
 333 }
 334 #endif
 335
 336 static void ossl_init_thread_stop(struct thread_local_inits_st *locals)
 337 {
 338     /* Can't do much about this */
 339     if (locals == NULL)
 340         return;
 341
 342     if (locals->async) {
 343 #ifdef OPENSSL_INIT_DEBUG
 344         fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: "
 345                         "ASYNC_cleanup_thread()\n");
 346 #endif
 347         ASYNC_cleanup_thread();
 348     }
 349
 350     if (locals->err_state) {
 351 #ifdef OPENSSL_INIT_DEBUG
 352         fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: "
 353                         "ERR_remove_thread_state()\n");
 354 #endif
 355         ERR_remove_thread_state();
 356     }
 357
 358     OPENSSL_free(locals);
 359 }
 360
 361 void OPENSSL_thread_stop(void)
 362 {
 363     ossl_init_thread_stop(
 364         (struct thread_local_inits_st *)ossl_init_get_thread_local(0));
 365 }
 366
 367 int ossl_init_thread_start(uint64_t opts)
 368 {
 369     struct thread_local_inits_st *locals = ossl_init_get_thread_local(1);
 370
 371     if (locals == NULL)
 372         return 0;
 373
 374     if (opts & OPENSSL_INIT_THREAD_ASYNC) {
 375 #ifdef OPENSSL_INIT_DEBUG
 376         fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_start: "
 377                         "marking thread for async\n");
 378 #endif
 379         locals->async = 1;
 380     }
 381
 382     if (opts & OPENSSL_INIT_THREAD_ERR_STATE) {
 383 #ifdef OPENSSL_INIT_DEBUG
 384         fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_start: "
 385                         "marking thread for err_state\n");
 386 #endif
 387         locals->err_state = 1;
 388     }
 389
 390     return 1;
 391 }
 392
 393 void OPENSSL_cleanup(void)
 394 {
 395     OPENSSL_INIT_STOP *currhandler, *lasthandler;
 396
 397     /* If we've not been inited then no need to deinit */
 398     if (!base_inited)
 399         return;
 400
 401     /* Might be explicitly called and also by atexit */
 402     if (stopped)
 403         return;
 404     stopped = 1;
 405
 406     /*
 407      * Thread stop may not get automatically called by the thread library for
 408      * the very last thread in some situations, so call it directly.
 409      */
 410     ossl_init_thread_stop(ossl_init_get_thread_local(0));
 411
 412     currhandler = stop_handlers;
 413     while (currhandler != NULL) {
 414         currhandler->handler();
 415         lasthandler = currhandler;
 416         currhandler = currhandler->next;
 417         OPENSSL_free(lasthandler);
 418     }
 419     stop_handlers = NULL;
 420
 421     CRYPTO_THREAD_lock_free(init_lock);
 422
 423     /*
 424      * We assume we are single-threaded for this function, i.e. no race
 425      * conditions for the various "*_inited" vars below.
 426      */
 427
 428 #ifndef OPENSSL_NO_COMP
 429     if (zlib_inited) {
 430 #ifdef OPENSSL_INIT_DEBUG
 431         fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
 432                         "comp_zlib_cleanup_internal()\n");
 433 #endif
 434         comp_zlib_cleanup_internal();
 435     }
 436 #endif
 437
 438     if (async_inited) {
 439 # ifdef OPENSSL_INIT_DEBUG
 440         fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
 441                         "async_deinit()\n");
 442 # endif
 443         async_deinit();
 444     }
 445
 446     if (load_crypto_strings_inited) {
 447 #ifdef OPENSSL_INIT_DEBUG
 448         fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
 449                         "err_free_strings_intern()\n");
 450 #endif
 451         err_free_strings_intern();
 452     }
 453
 454     CRYPTO_THREAD_cleanup_local(&threadstopkey);
 455
 456 #ifdef OPENSSL_INIT_DEBUG
 457     fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
 458                     "rand_cleanup_intern()\n");
 459     fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
 460                     "CONF_modules_free()\n");
 461 #ifndef OPENSSL_NO_ENGINE
 462     fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
 463                     "ENGINE_cleanup()\n");
 464 #endif
 465     fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
 466                     "crypto_cleanup_all_ex_data_intern()\n");
 467     fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
 468                     "bio_sock_cleanup_intern()\n");
 469     fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
 470                     "evp_cleanup_intern()\n");
 471     fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
 472                     "obj_cleanup_intern()\n");
 473 #endif
 474     /*
 475      * Note that cleanup order is important:
 476      * - rand_cleanup_intern could call an ENINGE's RAND cleanup function so
 477      * must be called before ENGINE_cleanup()
 478      * - ENGINEs use CRYPTO_EX_DATA and therefore, must be cleaned up
 479      * before the ex data handlers are wiped in CRYPTO_cleanup_all_ex_data().
 480      * - CONF_modules_free() can end up in ENGINE code so must be called before
 481      * ENGINE_cleanup()
 482      */
 483     rand_cleanup_intern();
 484     CONF_modules_free();
 485 #ifndef OPENSSL_NO_ENGINE
 486     ENGINE_cleanup();
 487 #endif
 488     crypto_cleanup_all_ex_data_intern();
 489 #ifndef OPENSSL_NO_SOCK
 490     bio_sock_cleanup_intern();
 491 #endif
 492     evp_cleanup_intern();
 493     obj_cleanup_intern();
 494     base_inited = 0;
 495 }
 496
 497 /*
 498  * If this function is called with a non NULL settings value then it must be
 499  * called prior to any threads making calls to any OpenSSL functions,
 500  * i.e. passing a non-null settings value is assumed to be single-threaded.
 501  */
 502 int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings)
 503 {
 504     static int stoperrset = 0;
 505
 506     if (stopped) {
 507         if (!stoperrset) {
 508             /*
 509              * We only ever set this once to avoid getting into an infinite
 510              * loop where the error system keeps trying to init and fails so
 511              * sets an error etc
 512              */
 513             stoperrset = 1;
 514             CRYPTOerr(CRYPTO_F_OPENSSL_INIT_CRYPTO, ERR_R_INIT_FAIL);
 515         }
 516         return 0;
 517     }
 518
 519     if (!CRYPTO_THREAD_run_once(&base, ossl_init_base))
 520         return 0;
 521
 522     if ((opts & OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS)
 523             && !CRYPTO_THREAD_run_once(&load_crypto_strings,
 524                                        ossl_init_no_load_crypto_strings))
 525         return 0;
 526
 527     if ((opts & OPENSSL_INIT_LOAD_CRYPTO_STRINGS)
 528             && !CRYPTO_THREAD_run_once(&load_crypto_strings,
 529                                        ossl_init_load_crypto_strings))
 530         return 0;
 531
 532     if ((opts & OPENSSL_INIT_NO_ADD_ALL_CIPHERS)
 533             && !CRYPTO_THREAD_run_once(&add_all_ciphers, ossl_init_no_add_algs))
 534         return 0;
 535
 536     if ((opts & OPENSSL_INIT_ADD_ALL_CIPHERS)
 537             && !CRYPTO_THREAD_run_once(&add_all_ciphers,
 538                                        ossl_init_add_all_ciphers))
 539         return 0;
 540
 541     if ((opts & OPENSSL_INIT_NO_ADD_ALL_DIGESTS)
 542             && !CRYPTO_THREAD_run_once(&add_all_digests, ossl_init_no_add_algs))
 543         return 0;
 544
 545     if ((opts & OPENSSL_INIT_ADD_ALL_DIGESTS)
 546             && !CRYPTO_THREAD_run_once(&add_all_digests,
 547                                        ossl_init_add_all_digests))
 548         return 0;
 549
 550     if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG)
 551             && !CRYPTO_THREAD_run_once(&config, ossl_init_no_config))
 552         return 0;
 553
 554     if (opts & OPENSSL_INIT_LOAD_CONFIG) {
 555         int ret;
 556         CRYPTO_THREAD_write_lock(init_lock);
 557         config_filename = (settings == NULL) ? NULL : settings->config_name;
 558         ret = CRYPTO_THREAD_run_once(&config, ossl_init_config);
 559         CRYPTO_THREAD_unlock(init_lock);
 560         if (!ret)
 561             return 0;
 562     }
 563
 564     if ((opts & OPENSSL_INIT_ASYNC)
 565             && !CRYPTO_THREAD_run_once(&async, ossl_init_async))
 566         return 0;
 567
 568 #ifndef OPENSSL_NO_ENGINE
 569     if ((opts & OPENSSL_INIT_ENGINE_OPENSSL)
 570             && !CRYPTO_THREAD_run_once(&engine_openssl,
 571                                        ossl_init_engine_openssl))
 572         return 0;
 573 # if !defined(OPENSSL_NO_HW) && \
 574     (defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV))
 575     if ((opts & OPENSSL_INIT_ENGINE_CRYPTODEV)
 576             && !CRYPTO_THREAD_run_once(&engine_cryptodev,
 577                                        ossl_init_engine_cryptodev))
 578         return 0;
 579 # endif
 580 # ifndef OPENSSL_NO_RDRAND
 581     if ((opts & OPENSSL_INIT_ENGINE_RDRAND)
 582             && !CRYPTO_THREAD_run_once(&engine_rdrand, ossl_init_engine_rdrand))
 583         return 0;
 584 # endif
 585     if ((opts & OPENSSL_INIT_ENGINE_DYNAMIC)
 586             && !CRYPTO_THREAD_run_once(&engine_dynamic,
 587                                        ossl_init_engine_dynamic))
 588         return 0;
 589 # ifndef OPENSSL_NO_STATIC_ENGINE
 590 #  if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK)
 591     if ((opts & OPENSSL_INIT_ENGINE_PADLOCK)
 592             && !CRYPTO_THREAD_run_once(&engine_padlock,
 593                                        ossl_init_engine_padlock))
 594         return 0;
 595 #  endif
 596 #  if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG)
 597     if ((opts & OPENSSL_INIT_ENGINE_CAPI)
 598             && !CRYPTO_THREAD_run_once(&engine_capi, ossl_init_engine_capi))
 599         return 0;
 600 #  endif
 601     if ((opts & OPENSSL_INIT_ENGINE_DASYNC)
 602             && !CRYPTO_THREAD_run_once(&engine_dasync, ossl_init_engine_dasync))
 603         return 0;
 604 #  if !defined(OPENSSL_NO_AFALGENG)
 605     if ((opts & OPENSSL_INIT_ENGINE_AFALG)
 606             && !CRYPTO_THREAD_run_once(&engine_afalg, ossl_init_engine_afalg))
 607         return 0;
 608 #  endif
 609 # endif
 610     if (opts & (OPENSSL_INIT_ENGINE_ALL_BUILTIN
 611                 | OPENSSL_INIT_ENGINE_DASYNC | OPENSSL_INIT_ENGINE_OPENSSL
 612                 | OPENSSL_INIT_ENGINE_AFALG)) {
 613         ENGINE_register_all_complete();
 614     }
 615 #endif
 616
 617 #ifndef OPENSSL_NO_COMP
 618     if ((opts & OPENSSL_INIT_ZLIB)
 619             && !CRYPTO_THREAD_run_once(&zlib, ossl_init_zlib))
 620         return 0;
 621 #endif
 622
 623     return 1;
 624 }
 625
 626 int OPENSSL_atexit(void (*handler)(void))
 627 {
 628     OPENSSL_INIT_STOP *newhand;
 629
 630     newhand = OPENSSL_malloc(sizeof(*newhand));
 631     if (newhand == NULL)
 632         return 0;
 633
 634     newhand->handler = handler;
 635     newhand->next = stop_handlers;
 636     stop_handlers = newhand;
 637
 638     return 1;
 639 }