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